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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/message/i2o
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'drivers/message/i2o')
-rw-r--r--drivers/message/i2o/Kconfig75
-rw-r--r--drivers/message/i2o/Makefile13
-rw-r--r--drivers/message/i2o/README98
-rw-r--r--drivers/message/i2o/README.ioctl394
-rw-r--r--drivers/message/i2o/debug.c481
-rw-r--r--drivers/message/i2o/device.c634
-rw-r--r--drivers/message/i2o/driver.c374
-rw-r--r--drivers/message/i2o/exec-osm.c507
-rw-r--r--drivers/message/i2o/i2o_block.c1247
-rw-r--r--drivers/message/i2o/i2o_block.h99
-rw-r--r--drivers/message/i2o/i2o_config.c1160
-rw-r--r--drivers/message/i2o/i2o_lan.h159
-rw-r--r--drivers/message/i2o/i2o_proc.c2112
-rw-r--r--drivers/message/i2o/i2o_scsi.c830
-rw-r--r--drivers/message/i2o/iop.c1327
-rw-r--r--drivers/message/i2o/pci.c528
16 files changed, 10038 insertions, 0 deletions
diff --git a/drivers/message/i2o/Kconfig b/drivers/message/i2o/Kconfig
new file mode 100644
index 000000000000..8d132b0d6b12
--- /dev/null
+++ b/drivers/message/i2o/Kconfig
@@ -0,0 +1,75 @@
1
2menu "I2O device support"
3
4config I2O
5 tristate "I2O support"
6 depends on PCI
7 ---help---
8 The Intelligent Input/Output (I2O) architecture allows hardware
9 drivers to be split into two parts: an operating system specific
10 module called the OSM and an hardware specific module called the
11 HDM. The OSM can talk to a whole range of HDM's, and ideally the
12 HDM's are not OS dependent. This allows for the same HDM driver to
13 be used under different operating systems if the relevant OSM is in
14 place. In order for this to work, you need to have an I2O interface
15 adapter card in your computer. This card contains a special I/O
16 processor (IOP), thus allowing high speeds since the CPU does not
17 have to deal with I/O.
18
19 If you say Y here, you will get a choice of interface adapter
20 drivers and OSM's with the following questions.
21
22 To compile this support as a module, choose M here: the
23 modules will be called i2o_core.
24
25 If unsure, say N.
26
27config I2O_CONFIG
28 tristate "I2O Configuration support"
29 depends on PCI && I2O
30 help
31 Say Y for support of the configuration interface for the I2O adapters.
32 If you have a RAID controller from Adaptec and you want to use the
33 raidutils to manage your RAID array, you have to say Y here.
34
35 To compile this support as a module, choose M here: the
36 module will be called i2o_config.
37
38config I2O_BLOCK
39 tristate "I2O Block OSM"
40 depends on I2O
41 help
42 Include support for the I2O Block OSM. The Block OSM presents disk
43 and other structured block devices to the operating system. If you
44 are using an RAID controller, you could access the array only by
45 the Block OSM driver. But it is possible to access the single disks
46 by the SCSI OSM driver, for example to monitor the disks.
47
48 To compile this support as a module, choose M here: the
49 module will be called i2o_block.
50
51config I2O_SCSI
52 tristate "I2O SCSI OSM"
53 depends on I2O && SCSI
54 help
55 Allows direct SCSI access to SCSI devices on a SCSI or FibreChannel
56 I2O controller. You can use both the SCSI and Block OSM together if
57 you wish. To access a RAID array, you must use the Block OSM driver.
58 But you could use the SCSI OSM driver to monitor the single disks.
59
60 To compile this support as a module, choose M here: the
61 module will be called i2o_scsi.
62
63config I2O_PROC
64 tristate "I2O /proc support"
65 depends on I2O
66 help
67 If you say Y here and to "/proc file system support", you will be
68 able to read I2O related information from the virtual directory
69 /proc/i2o.
70
71 To compile this support as a module, choose M here: the
72 module will be called i2o_proc.
73
74endmenu
75
diff --git a/drivers/message/i2o/Makefile b/drivers/message/i2o/Makefile
new file mode 100644
index 000000000000..aabc6cdc3fce
--- /dev/null
+++ b/drivers/message/i2o/Makefile
@@ -0,0 +1,13 @@
1#
2# Makefile for the kernel I2O OSM.
3#
4# Note : at this point, these files are compiled on all systems.
5# In the future, some of these should be built conditionally.
6#
7
8i2o_core-y += iop.o driver.o device.o debug.o pci.o exec-osm.o
9obj-$(CONFIG_I2O) += i2o_core.o
10obj-$(CONFIG_I2O_CONFIG)+= i2o_config.o
11obj-$(CONFIG_I2O_BLOCK) += i2o_block.o
12obj-$(CONFIG_I2O_SCSI) += i2o_scsi.o
13obj-$(CONFIG_I2O_PROC) += i2o_proc.o
diff --git a/drivers/message/i2o/README b/drivers/message/i2o/README
new file mode 100644
index 000000000000..a81f851f7b5d
--- /dev/null
+++ b/drivers/message/i2o/README
@@ -0,0 +1,98 @@
1
2 Linux I2O Support (c) Copyright 1999 Red Hat Software
3 and others.
4
5 This program is free software; you can redistribute it and/or
6 modify it under the terms of the GNU General Public License
7 as published by the Free Software Foundation; either version
8 2 of the License, or (at your option) any later version.
9
10AUTHORS (so far)
11
12Alan Cox, Building Number Three Ltd.
13 Core code, SCSI and Block OSMs
14
15Steve Ralston, LSI Logic Corp.
16 Debugging SCSI and Block OSM
17
18Deepak Saxena, Intel Corp.
19 Various core/block extensions
20 /proc interface, bug fixes
21 Ioctl interfaces for control
22 Debugging LAN OSM
23
24Philip Rumpf
25 Fixed assorted dumb SMP locking bugs
26
27Juha Sievanen, University of Helsinki Finland
28 LAN OSM code
29 /proc interface to LAN class
30 Bug fixes
31 Core code extensions
32
33Auvo Häkkinen, University of Helsinki Finland
34 LAN OSM code
35 /Proc interface to LAN class
36 Bug fixes
37 Core code extensions
38
39Taneli Vähäkangas, University of Helsinki Finland
40 Fixes to i2o_config
41
42CREDITS
43
44 This work was made possible by
45
46Red Hat Software
47 Funding for the Building #3 part of the project
48
49Symbios Logic (Now LSI)
50 Host adapters, hints, known to work platforms when I hit
51 compatibility problems
52
53BoxHill Corporation
54 Loan of initial FibreChannel disk array used for development work.
55
56European Comission
57 Funding the work done by the University of Helsinki
58
59SysKonnect
60 Loan of FDDI and Gigabit Ethernet cards
61
62ASUSTeK
63 Loan of I2O motherboard
64
65STATUS:
66
67o The core setup works within limits.
68o The scsi layer seems to almost work.
69 I'm still chasing down the hang bug.
70o The block OSM is mostly functional
71o LAN OSM works with FDDI and Ethernet cards.
72
73TO DO:
74
75General:
76o Provide hidden address space if asked
77o Long term message flow control
78o PCI IOP's without interrupts are not supported yet
79o Push FAIL handling into the core
80o DDM control interfaces for module load etc
81o Add I2O 2.0 support (Deffered to 2.5 kernel)
82
83Block:
84o Multiple major numbers
85o Read ahead and cache handling stuff. Talk to Ingo and people
86o Power management
87o Finish Media changers
88
89SCSI:
90o Find the right way to associate drives/luns/busses
91
92Lan:
93o Performance tuning
94o Test Fibre Channel code
95
96Tape:
97o Anyone seen anything implementing this ?
98 (D.S: Will attempt to do so if spare cycles permit)
diff --git a/drivers/message/i2o/README.ioctl b/drivers/message/i2o/README.ioctl
new file mode 100644
index 000000000000..73dd084c0e98
--- /dev/null
+++ b/drivers/message/i2o/README.ioctl
@@ -0,0 +1,394 @@
1
2Linux I2O User Space Interface
3rev 0.3 - 04/20/99
4
5=============================================================================
6Originally written by Deepak Saxena(deepak@plexity.net)
7Currently maintained by Deepak Saxena(deepak@plexity.net)
8=============================================================================
9
10I. Introduction
11
12The Linux I2O subsystem provides a set of ioctl() commands that can be
13utilized by user space applications to communicate with IOPs and devices
14on individual IOPs. This document defines the specific ioctl() commands
15that are available to the user and provides examples of their uses.
16
17This document assumes the reader is familiar with or has access to the
18I2O specification as no I2O message parameters are outlined. For information
19on the specification, see http://www.i2osig.org
20
21This document and the I2O user space interface are currently maintained
22by Deepak Saxena. Please send all comments, errata, and bug fixes to
23deepak@csociety.purdue.edu
24
25II. IOP Access
26
27Access to the I2O subsystem is provided through the device file named
28/dev/i2o/ctl. This file is a character file with major number 10 and minor
29number 166. It can be created through the following command:
30
31 mknod /dev/i2o/ctl c 10 166
32
33III. Determining the IOP Count
34
35 SYNOPSIS
36
37 ioctl(fd, I2OGETIOPS, int *count);
38
39 u8 count[MAX_I2O_CONTROLLERS];
40
41 DESCRIPTION
42
43 This function returns the system's active IOP table. count should
44 point to a buffer containing MAX_I2O_CONTROLLERS entries. Upon
45 returning, each entry will contain a non-zero value if the given
46 IOP unit is active, and NULL if it is inactive or non-existent.
47
48 RETURN VALUE.
49
50 Returns 0 if no errors occur, and -1 otherwise. If an error occurs,
51 errno is set appropriately:
52
53 EFAULT Invalid user space pointer was passed
54
55IV. Getting Hardware Resource Table
56
57 SYNOPSIS
58
59 ioctl(fd, I2OHRTGET, struct i2o_cmd_hrt *hrt);
60
61 struct i2o_cmd_hrtlct
62 {
63 u32 iop; /* IOP unit number */
64 void *resbuf; /* Buffer for result */
65 u32 *reslen; /* Buffer length in bytes */
66 };
67
68 DESCRIPTION
69
70 This function returns the Hardware Resource Table of the IOP specified
71 by hrt->iop in the buffer pointed to by hrt->resbuf. The actual size of
72 the data is written into *(hrt->reslen).
73
74 RETURNS
75
76 This function returns 0 if no errors occur. If an error occurs, -1
77 is returned and errno is set appropriately:
78
79 EFAULT Invalid user space pointer was passed
80 ENXIO Invalid IOP number
81 ENOBUFS Buffer not large enough. If this occurs, the required
82 buffer length is written into *(hrt->reslen)
83
84V. Getting Logical Configuration Table
85
86 SYNOPSIS
87
88 ioctl(fd, I2OLCTGET, struct i2o_cmd_lct *lct);
89
90 struct i2o_cmd_hrtlct
91 {
92 u32 iop; /* IOP unit number */
93 void *resbuf; /* Buffer for result */
94 u32 *reslen; /* Buffer length in bytes */
95 };
96
97 DESCRIPTION
98
99 This function returns the Logical Configuration Table of the IOP specified
100 by lct->iop in the buffer pointed to by lct->resbuf. The actual size of
101 the data is written into *(lct->reslen).
102
103 RETURNS
104
105 This function returns 0 if no errors occur. If an error occurs, -1
106 is returned and errno is set appropriately:
107
108 EFAULT Invalid user space pointer was passed
109 ENXIO Invalid IOP number
110 ENOBUFS Buffer not large enough. If this occurs, the required
111 buffer length is written into *(lct->reslen)
112
113VI. Settting Parameters
114
115 SYNOPSIS
116
117 ioctl(fd, I2OPARMSET, struct i2o_parm_setget *ops);
118
119 struct i2o_cmd_psetget
120 {
121 u32 iop; /* IOP unit number */
122 u32 tid; /* Target device TID */
123 void *opbuf; /* Operation List buffer */
124 u32 oplen; /* Operation List buffer length in bytes */
125 void *resbuf; /* Result List buffer */
126 u32 *reslen; /* Result List buffer length in bytes */
127 };
128
129 DESCRIPTION
130
131 This function posts a UtilParamsSet message to the device identified
132 by ops->iop and ops->tid. The operation list for the message is
133 sent through the ops->opbuf buffer, and the result list is written
134 into the buffer pointed to by ops->resbuf. The number of bytes
135 written is placed into *(ops->reslen).
136
137 RETURNS
138
139 The return value is the size in bytes of the data written into
140 ops->resbuf if no errors occur. If an error occurs, -1 is returned
141 and errno is set appropriatly:
142
143 EFAULT Invalid user space pointer was passed
144 ENXIO Invalid IOP number
145 ENOBUFS Buffer not large enough. If this occurs, the required
146 buffer length is written into *(ops->reslen)
147 ETIMEDOUT Timeout waiting for reply message
148 ENOMEM Kernel memory allocation error
149
150 A return value of 0 does not mean that the value was actually
151 changed properly on the IOP. The user should check the result
152 list to determine the specific status of the transaction.
153
154VII. Getting Parameters
155
156 SYNOPSIS
157
158 ioctl(fd, I2OPARMGET, struct i2o_parm_setget *ops);
159
160 struct i2o_parm_setget
161 {
162 u32 iop; /* IOP unit number */
163 u32 tid; /* Target device TID */
164 void *opbuf; /* Operation List buffer */
165 u32 oplen; /* Operation List buffer length in bytes */
166 void *resbuf; /* Result List buffer */
167 u32 *reslen; /* Result List buffer length in bytes */
168 };
169
170 DESCRIPTION
171
172 This function posts a UtilParamsGet message to the device identified
173 by ops->iop and ops->tid. The operation list for the message is
174 sent through the ops->opbuf buffer, and the result list is written
175 into the buffer pointed to by ops->resbuf. The actual size of data
176 written is placed into *(ops->reslen).
177
178 RETURNS
179
180 EFAULT Invalid user space pointer was passed
181 ENXIO Invalid IOP number
182 ENOBUFS Buffer not large enough. If this occurs, the required
183 buffer length is written into *(ops->reslen)
184 ETIMEDOUT Timeout waiting for reply message
185 ENOMEM Kernel memory allocation error
186
187 A return value of 0 does not mean that the value was actually
188 properly retreived. The user should check the result list
189 to determine the specific status of the transaction.
190
191VIII. Downloading Software
192
193 SYNOPSIS
194
195 ioctl(fd, I2OSWDL, struct i2o_sw_xfer *sw);
196
197 struct i2o_sw_xfer
198 {
199 u32 iop; /* IOP unit number */
200 u8 flags; /* DownloadFlags field */
201 u8 sw_type; /* Software type */
202 u32 sw_id; /* Software ID */
203 void *buf; /* Pointer to software buffer */
204 u32 *swlen; /* Length of software buffer */
205 u32 *maxfrag; /* Number of fragments */
206 u32 *curfrag; /* Current fragment number */
207 };
208
209 DESCRIPTION
210
211 This function downloads a software fragment pointed by sw->buf
212 to the iop identified by sw->iop. The DownloadFlags, SwID, SwType
213 and SwSize fields of the ExecSwDownload message are filled in with
214 the values of sw->flags, sw->sw_id, sw->sw_type and *(sw->swlen).
215
216 The fragments _must_ be sent in order and be 8K in size. The last
217 fragment _may_ be shorter, however. The kernel will compute its
218 size based on information in the sw->swlen field.
219
220 Please note that SW transfers can take a long time.
221
222 RETURNS
223
224 This function returns 0 no errors occur. If an error occurs, -1
225 is returned and errno is set appropriatly:
226
227 EFAULT Invalid user space pointer was passed
228 ENXIO Invalid IOP number
229 ETIMEDOUT Timeout waiting for reply message
230 ENOMEM Kernel memory allocation error
231
232IX. Uploading Software
233
234 SYNOPSIS
235
236 ioctl(fd, I2OSWUL, struct i2o_sw_xfer *sw);
237
238 struct i2o_sw_xfer
239 {
240 u32 iop; /* IOP unit number */
241 u8 flags; /* UploadFlags */
242 u8 sw_type; /* Software type */
243 u32 sw_id; /* Software ID */
244 void *buf; /* Pointer to software buffer */
245 u32 *swlen; /* Length of software buffer */
246 u32 *maxfrag; /* Number of fragments */
247 u32 *curfrag; /* Current fragment number */
248 };
249
250 DESCRIPTION
251
252 This function uploads a software fragment from the IOP identified
253 by sw->iop, sw->sw_type, sw->sw_id and optionally sw->swlen fields.
254 The UploadFlags, SwID, SwType and SwSize fields of the ExecSwUpload
255 message are filled in with the values of sw->flags, sw->sw_id,
256 sw->sw_type and *(sw->swlen).
257
258 The fragments _must_ be requested in order and be 8K in size. The
259 user is responsible for allocating memory pointed by sw->buf. The
260 last fragment _may_ be shorter.
261
262 Please note that SW transfers can take a long time.
263
264 RETURNS
265
266 This function returns 0 if no errors occur. If an error occurs, -1
267 is returned and errno is set appropriatly:
268
269 EFAULT Invalid user space pointer was passed
270 ENXIO Invalid IOP number
271 ETIMEDOUT Timeout waiting for reply message
272 ENOMEM Kernel memory allocation error
273
274X. Removing Software
275
276 SYNOPSIS
277
278 ioctl(fd, I2OSWDEL, struct i2o_sw_xfer *sw);
279
280 struct i2o_sw_xfer
281 {
282 u32 iop; /* IOP unit number */
283 u8 flags; /* RemoveFlags */
284 u8 sw_type; /* Software type */
285 u32 sw_id; /* Software ID */
286 void *buf; /* Unused */
287 u32 *swlen; /* Length of the software data */
288 u32 *maxfrag; /* Unused */
289 u32 *curfrag; /* Unused */
290 };
291
292 DESCRIPTION
293
294 This function removes software from the IOP identified by sw->iop.
295 The RemoveFlags, SwID, SwType and SwSize fields of the ExecSwRemove message
296 are filled in with the values of sw->flags, sw->sw_id, sw->sw_type and
297 *(sw->swlen). Give zero in *(sw->len) if the value is unknown. IOP uses
298 *(sw->swlen) value to verify correct identication of the module to remove.
299 The actual size of the module is written into *(sw->swlen).
300
301 RETURNS
302
303 This function returns 0 if no errors occur. If an error occurs, -1
304 is returned and errno is set appropriatly:
305
306 EFAULT Invalid user space pointer was passed
307 ENXIO Invalid IOP number
308 ETIMEDOUT Timeout waiting for reply message
309 ENOMEM Kernel memory allocation error
310
311X. Validating Configuration
312
313 SYNOPSIS
314
315 ioctl(fd, I2OVALIDATE, int *iop);
316 u32 iop;
317
318 DESCRIPTION
319
320 This function posts an ExecConfigValidate message to the controller
321 identified by iop. This message indicates that the current
322 configuration is accepted. The iop changes the status of suspect drivers
323 to valid and may delete old drivers from its store.
324
325 RETURNS
326
327 This function returns 0 if no erro occur. If an error occurs, -1 is
328 returned and errno is set appropriatly:
329
330 ETIMEDOUT Timeout waiting for reply message
331 ENXIO Invalid IOP number
332
333XI. Configuration Dialog
334
335 SYNOPSIS
336
337 ioctl(fd, I2OHTML, struct i2o_html *htquery);
338 struct i2o_html
339 {
340 u32 iop; /* IOP unit number */
341 u32 tid; /* Target device ID */
342 u32 page; /* HTML page */
343 void *resbuf; /* Buffer for reply HTML page */
344 u32 *reslen; /* Length in bytes of reply buffer */
345 void *qbuf; /* Pointer to HTTP query string */
346 u32 qlen; /* Length in bytes of query string buffer */
347 };
348
349 DESCRIPTION
350
351 This function posts an UtilConfigDialog message to the device identified
352 by htquery->iop and htquery->tid. The requested HTML page number is
353 provided by the htquery->page field, and the resultant data is stored
354 in the buffer pointed to by htquery->resbuf. If there is an HTTP query
355 string that is to be sent to the device, it should be sent in the buffer
356 pointed to by htquery->qbuf. If there is no query string, this field
357 should be set to NULL. The actual size of the reply received is written
358 into *(htquery->reslen).
359
360 RETURNS
361
362 This function returns 0 if no error occur. If an error occurs, -1
363 is returned and errno is set appropriatly:
364
365 EFAULT Invalid user space pointer was passed
366 ENXIO Invalid IOP number
367 ENOBUFS Buffer not large enough. If this occurs, the required
368 buffer length is written into *(ops->reslen)
369 ETIMEDOUT Timeout waiting for reply message
370 ENOMEM Kernel memory allocation error
371
372XII. Events
373
374 In the process of determining this. Current idea is to have use
375 the select() interface to allow user apps to periodically poll
376 the /dev/i2o/ctl device for events. When select() notifies the user
377 that an event is available, the user would call read() to retrieve
378 a list of all the events that are pending for the specific device.
379
380=============================================================================
381Revision History
382=============================================================================
383
384Rev 0.1 - 04/01/99
385- Initial revision
386
387Rev 0.2 - 04/06/99
388- Changed return values to match UNIX ioctl() standard. Only return values
389 are 0 and -1. All errors are reported through errno.
390- Added summary of proposed possible event interfaces
391
392Rev 0.3 - 04/20/99
393- Changed all ioctls() to use pointers to user data instead of actual data
394- Updated error values to match the code
diff --git a/drivers/message/i2o/debug.c b/drivers/message/i2o/debug.c
new file mode 100644
index 000000000000..2a5d478fc60e
--- /dev/null
+++ b/drivers/message/i2o/debug.c
@@ -0,0 +1,481 @@
1#include <linux/config.h>
2#include <linux/module.h>
3#include <linux/kernel.h>
4#include <linux/pci.h>
5#include <linux/i2o.h>
6
7extern struct i2o_driver **i2o_drivers;
8extern unsigned int i2o_max_drivers;
9static void i2o_report_util_cmd(u8 cmd);
10static void i2o_report_exec_cmd(u8 cmd);
11static void i2o_report_fail_status(u8 req_status, u32 * msg);
12static void i2o_report_common_status(u8 req_status);
13static void i2o_report_common_dsc(u16 detailed_status);
14
15/*
16 * Used for error reporting/debugging purposes.
17 * Report Cmd name, Request status, Detailed Status.
18 */
19void i2o_report_status(const char *severity, const char *str,
20 struct i2o_message *m)
21{
22 u32 *msg = (u32 *) m;
23 u8 cmd = (msg[1] >> 24) & 0xFF;
24 u8 req_status = (msg[4] >> 24) & 0xFF;
25 u16 detailed_status = msg[4] & 0xFFFF;
26 //struct i2o_driver *h = i2o_drivers[msg[2] & (i2o_max_drivers-1)];
27
28 if (cmd == I2O_CMD_UTIL_EVT_REGISTER)
29 return; // No status in this reply
30
31 printk(KERN_DEBUG "%s%s: ", severity, str);
32
33 if (cmd < 0x1F) // Utility cmd
34 i2o_report_util_cmd(cmd);
35
36 else if (cmd >= 0xA0 && cmd <= 0xEF) // Executive cmd
37 i2o_report_exec_cmd(cmd);
38 else
39 printk(KERN_DEBUG "Cmd = %0#2x, ", cmd); // Other cmds
40
41 if (msg[0] & MSG_FAIL) {
42 i2o_report_fail_status(req_status, msg);
43 return;
44 }
45
46 i2o_report_common_status(req_status);
47
48 if (cmd < 0x1F || (cmd >= 0xA0 && cmd <= 0xEF))
49 i2o_report_common_dsc(detailed_status);
50 else
51 printk(KERN_DEBUG " / DetailedStatus = %0#4x.\n",
52 detailed_status);
53}
54
55/* Used to dump a message to syslog during debugging */
56void i2o_dump_message(struct i2o_message *m)
57{
58#ifdef DEBUG
59 u32 *msg = (u32 *) m;
60 int i;
61 printk(KERN_INFO "Dumping I2O message size %d @ %p\n",
62 msg[0] >> 16 & 0xffff, msg);
63 for (i = 0; i < ((msg[0] >> 16) & 0xffff); i++)
64 printk(KERN_INFO " msg[%d] = %0#10x\n", i, msg[i]);
65#endif
66}
67
68/*
69 * Used for error reporting/debugging purposes.
70 * Following fail status are common to all classes.
71 * The preserved message must be handled in the reply handler.
72 */
73static void i2o_report_fail_status(u8 req_status, u32 * msg)
74{
75 static char *FAIL_STATUS[] = {
76 "0x80", /* not used */
77 "SERVICE_SUSPENDED", /* 0x81 */
78 "SERVICE_TERMINATED", /* 0x82 */
79 "CONGESTION",
80 "FAILURE",
81 "STATE_ERROR",
82 "TIME_OUT",
83 "ROUTING_FAILURE",
84 "INVALID_VERSION",
85 "INVALID_OFFSET",
86 "INVALID_MSG_FLAGS",
87 "FRAME_TOO_SMALL",
88 "FRAME_TOO_LARGE",
89 "INVALID_TARGET_ID",
90 "INVALID_INITIATOR_ID",
91 "INVALID_INITIATOR_CONTEX", /* 0x8F */
92 "UNKNOWN_FAILURE" /* 0xFF */
93 };
94
95 if (req_status == I2O_FSC_TRANSPORT_UNKNOWN_FAILURE)
96 printk(KERN_DEBUG "TRANSPORT_UNKNOWN_FAILURE (%0#2x)\n.",
97 req_status);
98 else
99 printk(KERN_DEBUG "TRANSPORT_%s.\n",
100 FAIL_STATUS[req_status & 0x0F]);
101
102 /* Dump some details */
103
104 printk(KERN_ERR " InitiatorId = %d, TargetId = %d\n",
105 (msg[1] >> 12) & 0xFFF, msg[1] & 0xFFF);
106 printk(KERN_ERR " LowestVersion = 0x%02X, HighestVersion = 0x%02X\n",
107 (msg[4] >> 8) & 0xFF, msg[4] & 0xFF);
108 printk(KERN_ERR " FailingHostUnit = 0x%04X, FailingIOP = 0x%03X\n",
109 msg[5] >> 16, msg[5] & 0xFFF);
110
111 printk(KERN_ERR " Severity: 0x%02X ", (msg[4] >> 16) & 0xFF);
112 if (msg[4] & (1 << 16))
113 printk(KERN_DEBUG "(FormatError), "
114 "this msg can never be delivered/processed.\n");
115 if (msg[4] & (1 << 17))
116 printk(KERN_DEBUG "(PathError), "
117 "this msg can no longer be delivered/processed.\n");
118 if (msg[4] & (1 << 18))
119 printk(KERN_DEBUG "(PathState), "
120 "the system state does not allow delivery.\n");
121 if (msg[4] & (1 << 19))
122 printk(KERN_DEBUG
123 "(Congestion), resources temporarily not available;"
124 "do not retry immediately.\n");
125}
126
127/*
128 * Used for error reporting/debugging purposes.
129 * Following reply status are common to all classes.
130 */
131static void i2o_report_common_status(u8 req_status)
132{
133 static char *REPLY_STATUS[] = {
134 "SUCCESS",
135 "ABORT_DIRTY",
136 "ABORT_NO_DATA_TRANSFER",
137 "ABORT_PARTIAL_TRANSFER",
138 "ERROR_DIRTY",
139 "ERROR_NO_DATA_TRANSFER",
140 "ERROR_PARTIAL_TRANSFER",
141 "PROCESS_ABORT_DIRTY",
142 "PROCESS_ABORT_NO_DATA_TRANSFER",
143 "PROCESS_ABORT_PARTIAL_TRANSFER",
144 "TRANSACTION_ERROR",
145 "PROGRESS_REPORT"
146 };
147
148 if (req_status >= ARRAY_SIZE(REPLY_STATUS))
149 printk(KERN_DEBUG "RequestStatus = %0#2x", req_status);
150 else
151 printk(KERN_DEBUG "%s", REPLY_STATUS[req_status]);
152}
153
154/*
155 * Used for error reporting/debugging purposes.
156 * Following detailed status are valid for executive class,
157 * utility class, DDM class and for transaction error replies.
158 */
159static void i2o_report_common_dsc(u16 detailed_status)
160{
161 static char *COMMON_DSC[] = {
162 "SUCCESS",
163 "0x01", // not used
164 "BAD_KEY",
165 "TCL_ERROR",
166 "REPLY_BUFFER_FULL",
167 "NO_SUCH_PAGE",
168 "INSUFFICIENT_RESOURCE_SOFT",
169 "INSUFFICIENT_RESOURCE_HARD",
170 "0x08", // not used
171 "CHAIN_BUFFER_TOO_LARGE",
172 "UNSUPPORTED_FUNCTION",
173 "DEVICE_LOCKED",
174 "DEVICE_RESET",
175 "INAPPROPRIATE_FUNCTION",
176 "INVALID_INITIATOR_ADDRESS",
177 "INVALID_MESSAGE_FLAGS",
178 "INVALID_OFFSET",
179 "INVALID_PARAMETER",
180 "INVALID_REQUEST",
181 "INVALID_TARGET_ADDRESS",
182 "MESSAGE_TOO_LARGE",
183 "MESSAGE_TOO_SMALL",
184 "MISSING_PARAMETER",
185 "TIMEOUT",
186 "UNKNOWN_ERROR",
187 "UNKNOWN_FUNCTION",
188 "UNSUPPORTED_VERSION",
189 "DEVICE_BUSY",
190 "DEVICE_NOT_AVAILABLE"
191 };
192
193 if (detailed_status > I2O_DSC_DEVICE_NOT_AVAILABLE)
194 printk(KERN_DEBUG " / DetailedStatus = %0#4x.\n",
195 detailed_status);
196 else
197 printk(KERN_DEBUG " / %s.\n", COMMON_DSC[detailed_status]);
198}
199
200/*
201 * Used for error reporting/debugging purposes
202 */
203static void i2o_report_util_cmd(u8 cmd)
204{
205 switch (cmd) {
206 case I2O_CMD_UTIL_NOP:
207 printk(KERN_DEBUG "UTIL_NOP, ");
208 break;
209 case I2O_CMD_UTIL_ABORT:
210 printk(KERN_DEBUG "UTIL_ABORT, ");
211 break;
212 case I2O_CMD_UTIL_CLAIM:
213 printk(KERN_DEBUG "UTIL_CLAIM, ");
214 break;
215 case I2O_CMD_UTIL_RELEASE:
216 printk(KERN_DEBUG "UTIL_CLAIM_RELEASE, ");
217 break;
218 case I2O_CMD_UTIL_CONFIG_DIALOG:
219 printk(KERN_DEBUG "UTIL_CONFIG_DIALOG, ");
220 break;
221 case I2O_CMD_UTIL_DEVICE_RESERVE:
222 printk(KERN_DEBUG "UTIL_DEVICE_RESERVE, ");
223 break;
224 case I2O_CMD_UTIL_DEVICE_RELEASE:
225 printk(KERN_DEBUG "UTIL_DEVICE_RELEASE, ");
226 break;
227 case I2O_CMD_UTIL_EVT_ACK:
228 printk(KERN_DEBUG "UTIL_EVENT_ACKNOWLEDGE, ");
229 break;
230 case I2O_CMD_UTIL_EVT_REGISTER:
231 printk(KERN_DEBUG "UTIL_EVENT_REGISTER, ");
232 break;
233 case I2O_CMD_UTIL_LOCK:
234 printk(KERN_DEBUG "UTIL_LOCK, ");
235 break;
236 case I2O_CMD_UTIL_LOCK_RELEASE:
237 printk(KERN_DEBUG "UTIL_LOCK_RELEASE, ");
238 break;
239 case I2O_CMD_UTIL_PARAMS_GET:
240 printk(KERN_DEBUG "UTIL_PARAMS_GET, ");
241 break;
242 case I2O_CMD_UTIL_PARAMS_SET:
243 printk(KERN_DEBUG "UTIL_PARAMS_SET, ");
244 break;
245 case I2O_CMD_UTIL_REPLY_FAULT_NOTIFY:
246 printk(KERN_DEBUG "UTIL_REPLY_FAULT_NOTIFY, ");
247 break;
248 default:
249 printk(KERN_DEBUG "Cmd = %0#2x, ", cmd);
250 }
251}
252
253/*
254 * Used for error reporting/debugging purposes
255 */
256static void i2o_report_exec_cmd(u8 cmd)
257{
258 switch (cmd) {
259 case I2O_CMD_ADAPTER_ASSIGN:
260 printk(KERN_DEBUG "EXEC_ADAPTER_ASSIGN, ");
261 break;
262 case I2O_CMD_ADAPTER_READ:
263 printk(KERN_DEBUG "EXEC_ADAPTER_READ, ");
264 break;
265 case I2O_CMD_ADAPTER_RELEASE:
266 printk(KERN_DEBUG "EXEC_ADAPTER_RELEASE, ");
267 break;
268 case I2O_CMD_BIOS_INFO_SET:
269 printk(KERN_DEBUG "EXEC_BIOS_INFO_SET, ");
270 break;
271 case I2O_CMD_BOOT_DEVICE_SET:
272 printk(KERN_DEBUG "EXEC_BOOT_DEVICE_SET, ");
273 break;
274 case I2O_CMD_CONFIG_VALIDATE:
275 printk(KERN_DEBUG "EXEC_CONFIG_VALIDATE, ");
276 break;
277 case I2O_CMD_CONN_SETUP:
278 printk(KERN_DEBUG "EXEC_CONN_SETUP, ");
279 break;
280 case I2O_CMD_DDM_DESTROY:
281 printk(KERN_DEBUG "EXEC_DDM_DESTROY, ");
282 break;
283 case I2O_CMD_DDM_ENABLE:
284 printk(KERN_DEBUG "EXEC_DDM_ENABLE, ");
285 break;
286 case I2O_CMD_DDM_QUIESCE:
287 printk(KERN_DEBUG "EXEC_DDM_QUIESCE, ");
288 break;
289 case I2O_CMD_DDM_RESET:
290 printk(KERN_DEBUG "EXEC_DDM_RESET, ");
291 break;
292 case I2O_CMD_DDM_SUSPEND:
293 printk(KERN_DEBUG "EXEC_DDM_SUSPEND, ");
294 break;
295 case I2O_CMD_DEVICE_ASSIGN:
296 printk(KERN_DEBUG "EXEC_DEVICE_ASSIGN, ");
297 break;
298 case I2O_CMD_DEVICE_RELEASE:
299 printk(KERN_DEBUG "EXEC_DEVICE_RELEASE, ");
300 break;
301 case I2O_CMD_HRT_GET:
302 printk(KERN_DEBUG "EXEC_HRT_GET, ");
303 break;
304 case I2O_CMD_ADAPTER_CLEAR:
305 printk(KERN_DEBUG "EXEC_IOP_CLEAR, ");
306 break;
307 case I2O_CMD_ADAPTER_CONNECT:
308 printk(KERN_DEBUG "EXEC_IOP_CONNECT, ");
309 break;
310 case I2O_CMD_ADAPTER_RESET:
311 printk(KERN_DEBUG "EXEC_IOP_RESET, ");
312 break;
313 case I2O_CMD_LCT_NOTIFY:
314 printk(KERN_DEBUG "EXEC_LCT_NOTIFY, ");
315 break;
316 case I2O_CMD_OUTBOUND_INIT:
317 printk(KERN_DEBUG "EXEC_OUTBOUND_INIT, ");
318 break;
319 case I2O_CMD_PATH_ENABLE:
320 printk(KERN_DEBUG "EXEC_PATH_ENABLE, ");
321 break;
322 case I2O_CMD_PATH_QUIESCE:
323 printk(KERN_DEBUG "EXEC_PATH_QUIESCE, ");
324 break;
325 case I2O_CMD_PATH_RESET:
326 printk(KERN_DEBUG "EXEC_PATH_RESET, ");
327 break;
328 case I2O_CMD_STATIC_MF_CREATE:
329 printk(KERN_DEBUG "EXEC_STATIC_MF_CREATE, ");
330 break;
331 case I2O_CMD_STATIC_MF_RELEASE:
332 printk(KERN_DEBUG "EXEC_STATIC_MF_RELEASE, ");
333 break;
334 case I2O_CMD_STATUS_GET:
335 printk(KERN_DEBUG "EXEC_STATUS_GET, ");
336 break;
337 case I2O_CMD_SW_DOWNLOAD:
338 printk(KERN_DEBUG "EXEC_SW_DOWNLOAD, ");
339 break;
340 case I2O_CMD_SW_UPLOAD:
341 printk(KERN_DEBUG "EXEC_SW_UPLOAD, ");
342 break;
343 case I2O_CMD_SW_REMOVE:
344 printk(KERN_DEBUG "EXEC_SW_REMOVE, ");
345 break;
346 case I2O_CMD_SYS_ENABLE:
347 printk(KERN_DEBUG "EXEC_SYS_ENABLE, ");
348 break;
349 case I2O_CMD_SYS_MODIFY:
350 printk(KERN_DEBUG "EXEC_SYS_MODIFY, ");
351 break;
352 case I2O_CMD_SYS_QUIESCE:
353 printk(KERN_DEBUG "EXEC_SYS_QUIESCE, ");
354 break;
355 case I2O_CMD_SYS_TAB_SET:
356 printk(KERN_DEBUG "EXEC_SYS_TAB_SET, ");
357 break;
358 default:
359 printk(KERN_DEBUG "Cmd = %#02x, ", cmd);
360 }
361}
362
363void i2o_debug_state(struct i2o_controller *c)
364{
365 printk(KERN_INFO "%s: State = ", c->name);
366 switch (((i2o_status_block *) c->status_block.virt)->iop_state) {
367 case 0x01:
368 printk(KERN_DEBUG "INIT\n");
369 break;
370 case 0x02:
371 printk(KERN_DEBUG "RESET\n");
372 break;
373 case 0x04:
374 printk(KERN_DEBUG "HOLD\n");
375 break;
376 case 0x05:
377 printk(KERN_DEBUG "READY\n");
378 break;
379 case 0x08:
380 printk(KERN_DEBUG "OPERATIONAL\n");
381 break;
382 case 0x10:
383 printk(KERN_DEBUG "FAILED\n");
384 break;
385 case 0x11:
386 printk(KERN_DEBUG "FAULTED\n");
387 break;
388 default:
389 printk(KERN_DEBUG "%x (unknown !!)\n",
390 ((i2o_status_block *) c->status_block.virt)->iop_state);
391 }
392};
393
394void i2o_dump_hrt(struct i2o_controller *c)
395{
396 u32 *rows = (u32 *) c->hrt.virt;
397 u8 *p = (u8 *) c->hrt.virt;
398 u8 *d;
399 int count;
400 int length;
401 int i;
402 int state;
403
404 if (p[3] != 0) {
405 printk(KERN_ERR
406 "%s: HRT table for controller is too new a version.\n",
407 c->name);
408 return;
409 }
410
411 count = p[0] | (p[1] << 8);
412 length = p[2];
413
414 printk(KERN_INFO "%s: HRT has %d entries of %d bytes each.\n",
415 c->name, count, length << 2);
416
417 rows += 2;
418
419 for (i = 0; i < count; i++) {
420 printk(KERN_INFO "Adapter %08X: ", rows[0]);
421 p = (u8 *) (rows + 1);
422 d = (u8 *) (rows + 2);
423 state = p[1] << 8 | p[0];
424
425 printk(KERN_DEBUG "TID %04X:[", state & 0xFFF);
426 state >>= 12;
427 if (state & (1 << 0))
428 printk(KERN_DEBUG "H"); /* Hidden */
429 if (state & (1 << 2)) {
430 printk(KERN_DEBUG "P"); /* Present */
431 if (state & (1 << 1))
432 printk(KERN_DEBUG "C"); /* Controlled */
433 }
434 if (state > 9)
435 printk(KERN_DEBUG "*"); /* Hard */
436
437 printk(KERN_DEBUG "]:");
438
439 switch (p[3] & 0xFFFF) {
440 case 0:
441 /* Adapter private bus - easy */
442 printk(KERN_DEBUG
443 "Local bus %d: I/O at 0x%04X Mem 0x%08X", p[2],
444 d[1] << 8 | d[0], *(u32 *) (d + 4));
445 break;
446 case 1:
447 /* ISA bus */
448 printk(KERN_DEBUG
449 "ISA %d: CSN %d I/O at 0x%04X Mem 0x%08X", p[2],
450 d[2], d[1] << 8 | d[0], *(u32 *) (d + 4));
451 break;
452
453 case 2: /* EISA bus */
454 printk(KERN_DEBUG
455 "EISA %d: Slot %d I/O at 0x%04X Mem 0x%08X",
456 p[2], d[3], d[1] << 8 | d[0], *(u32 *) (d + 4));
457 break;
458
459 case 3: /* MCA bus */
460 printk(KERN_DEBUG
461 "MCA %d: Slot %d I/O at 0x%04X Mem 0x%08X", p[2],
462 d[3], d[1] << 8 | d[0], *(u32 *) (d + 4));
463 break;
464
465 case 4: /* PCI bus */
466 printk(KERN_DEBUG
467 "PCI %d: Bus %d Device %d Function %d", p[2],
468 d[2], d[1], d[0]);
469 break;
470
471 case 0x80: /* Other */
472 default:
473 printk(KERN_DEBUG "Unsupported bus type.");
474 break;
475 }
476 printk(KERN_DEBUG "\n");
477 rows += length;
478 }
479}
480
481EXPORT_SYMBOL(i2o_dump_message);
diff --git a/drivers/message/i2o/device.c b/drivers/message/i2o/device.c
new file mode 100644
index 000000000000..eb907e87bc7b
--- /dev/null
+++ b/drivers/message/i2o/device.c
@@ -0,0 +1,634 @@
1/*
2 * Functions to handle I2O devices
3 *
4 * Copyright (C) 2004 Markus Lidel <Markus.Lidel@shadowconnect.com>
5 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation; either version 2 of the License, or (at your
9 * option) any later version.
10 *
11 * Fixes/additions:
12 * Markus Lidel <Markus.Lidel@shadowconnect.com>
13 * initial version.
14 */
15
16#include <linux/module.h>
17#include <linux/i2o.h>
18#include <linux/delay.h>
19
20/* Exec OSM functions */
21extern struct bus_type i2o_bus_type;
22
23/**
24 * i2o_device_issue_claim - claim or release a device
25 * @dev: I2O device to claim or release
26 * @cmd: claim or release command
27 * @type: type of claim
28 *
29 * Issue I2O UTIL_CLAIM or UTIL_RELEASE messages. The message to be sent
30 * is set by cmd. dev is the I2O device which should be claim or
31 * released and the type is the claim type (see the I2O spec).
32 *
33 * Returs 0 on success or negative error code on failure.
34 */
35static inline int i2o_device_issue_claim(struct i2o_device *dev, u32 cmd,
36 u32 type)
37{
38 struct i2o_message __iomem *msg;
39 u32 m;
40
41 m = i2o_msg_get_wait(dev->iop, &msg, I2O_TIMEOUT_MESSAGE_GET);
42 if (m == I2O_QUEUE_EMPTY)
43 return -ETIMEDOUT;
44
45 writel(FIVE_WORD_MSG_SIZE | SGL_OFFSET_0, &msg->u.head[0]);
46 writel(cmd << 24 | HOST_TID << 12 | dev->lct_data.tid, &msg->u.head[1]);
47 writel(type, &msg->body[0]);
48
49 return i2o_msg_post_wait(dev->iop, m, 60);
50};
51
52/**
53 * i2o_device_claim - claim a device for use by an OSM
54 * @dev: I2O device to claim
55 * @drv: I2O driver which wants to claim the device
56 *
57 * Do the leg work to assign a device to a given OSM. If the claim succeed
58 * the owner of the rimary. If the attempt fails a negative errno code
59 * is returned. On success zero is returned.
60 */
61int i2o_device_claim(struct i2o_device *dev)
62{
63 int rc = 0;
64
65 down(&dev->lock);
66
67 rc = i2o_device_issue_claim(dev, I2O_CMD_UTIL_CLAIM, I2O_CLAIM_PRIMARY);
68 if (!rc)
69 pr_debug("i2o: claim of device %d succeded\n",
70 dev->lct_data.tid);
71 else
72 pr_debug("i2o: claim of device %d failed %d\n",
73 dev->lct_data.tid, rc);
74
75 up(&dev->lock);
76
77 return rc;
78};
79
80/**
81 * i2o_device_claim_release - release a device that the OSM is using
82 * @dev: device to release
83 * @drv: driver which claimed the device
84 *
85 * Drop a claim by an OSM on a given I2O device.
86 *
87 * AC - some devices seem to want to refuse an unclaim until they have
88 * finished internal processing. It makes sense since you don't want a
89 * new device to go reconfiguring the entire system until you are done.
90 * Thus we are prepared to wait briefly.
91 *
92 * Returns 0 on success or negative error code on failure.
93 */
94int i2o_device_claim_release(struct i2o_device *dev)
95{
96 int tries;
97 int rc = 0;
98
99 down(&dev->lock);
100
101 /*
102 * If the controller takes a nonblocking approach to
103 * releases we have to sleep/poll for a few times.
104 */
105 for (tries = 0; tries < 10; tries++) {
106 rc = i2o_device_issue_claim(dev, I2O_CMD_UTIL_RELEASE,
107 I2O_CLAIM_PRIMARY);
108 if (!rc)
109 break;
110
111 ssleep(1);
112 }
113
114 if (!rc)
115 pr_debug("i2o: claim release of device %d succeded\n",
116 dev->lct_data.tid);
117 else
118 pr_debug("i2o: claim release of device %d failed %d\n",
119 dev->lct_data.tid, rc);
120
121 up(&dev->lock);
122
123 return rc;
124};
125
126/**
127 * i2o_device_release - release the memory for a I2O device
128 * @dev: I2O device which should be released
129 *
130 * Release the allocated memory. This function is called if refcount of
131 * device reaches 0 automatically.
132 */
133static void i2o_device_release(struct device *dev)
134{
135 struct i2o_device *i2o_dev = to_i2o_device(dev);
136
137 pr_debug("i2o: device %s released\n", dev->bus_id);
138
139 kfree(i2o_dev);
140};
141
142/**
143 * i2o_device_class_release - Remove I2O device attributes
144 * @cd: I2O class device which is added to the I2O device class
145 *
146 * Removes attributes from the I2O device again. Also search each device
147 * on the controller for I2O devices which refert to this device as parent
148 * or user and remove this links also.
149 */
150static void i2o_device_class_release(struct class_device *cd)
151{
152 struct i2o_device *i2o_dev, *tmp;
153 struct i2o_controller *c;
154
155 i2o_dev = to_i2o_device(cd->dev);
156 c = i2o_dev->iop;
157
158 sysfs_remove_link(&i2o_dev->device.kobj, "parent");
159 sysfs_remove_link(&i2o_dev->device.kobj, "user");
160
161 list_for_each_entry(tmp, &c->devices, list) {
162 if (tmp->lct_data.parent_tid == i2o_dev->lct_data.tid)
163 sysfs_remove_link(&tmp->device.kobj, "parent");
164 if (tmp->lct_data.user_tid == i2o_dev->lct_data.tid)
165 sysfs_remove_link(&tmp->device.kobj, "user");
166 }
167};
168
169/* I2O device class */
170static struct class i2o_device_class = {
171 .name = "i2o_device",
172 .release = i2o_device_class_release
173};
174
175/**
176 * i2o_device_alloc - Allocate a I2O device and initialize it
177 *
178 * Allocate the memory for a I2O device and initialize locks and lists
179 *
180 * Returns the allocated I2O device or a negative error code if the device
181 * could not be allocated.
182 */
183static struct i2o_device *i2o_device_alloc(void)
184{
185 struct i2o_device *dev;
186
187 dev = kmalloc(sizeof(*dev), GFP_KERNEL);
188 if (!dev)
189 return ERR_PTR(-ENOMEM);
190
191 memset(dev, 0, sizeof(*dev));
192
193 INIT_LIST_HEAD(&dev->list);
194 init_MUTEX(&dev->lock);
195
196 dev->device.bus = &i2o_bus_type;
197 dev->device.release = &i2o_device_release;
198 dev->classdev.class = &i2o_device_class;
199 dev->classdev.dev = &dev->device;
200
201 return dev;
202};
203
204/**
205 * i2o_device_add - allocate a new I2O device and add it to the IOP
206 * @iop: I2O controller where the device is on
207 * @entry: LCT entry of the I2O device
208 *
209 * Allocate a new I2O device and initialize it with the LCT entry. The
210 * device is appended to the device list of the controller.
211 *
212 * Returns a pointer to the I2O device on success or negative error code
213 * on failure.
214 */
215static struct i2o_device *i2o_device_add(struct i2o_controller *c,
216 i2o_lct_entry * entry)
217{
218 struct i2o_device *dev;
219
220 dev = i2o_device_alloc();
221 if (IS_ERR(dev)) {
222 printk(KERN_ERR "i2o: unable to allocate i2o device\n");
223 return dev;
224 }
225
226 dev->lct_data = *entry;
227
228 snprintf(dev->device.bus_id, BUS_ID_SIZE, "%d:%03x", c->unit,
229 dev->lct_data.tid);
230
231 snprintf(dev->classdev.class_id, BUS_ID_SIZE, "%d:%03x", c->unit,
232 dev->lct_data.tid);
233
234 dev->iop = c;
235 dev->device.parent = &c->device;
236
237 device_register(&dev->device);
238
239 list_add_tail(&dev->list, &c->devices);
240
241 class_device_register(&dev->classdev);
242
243 i2o_driver_notify_device_add_all(dev);
244
245 pr_debug("i2o: device %s added\n", dev->device.bus_id);
246
247 return dev;
248};
249
250/**
251 * i2o_device_remove - remove an I2O device from the I2O core
252 * @dev: I2O device which should be released
253 *
254 * Is used on I2O controller removal or LCT modification, when the device
255 * is removed from the system. Note that the device could still hang
256 * around until the refcount reaches 0.
257 */
258void i2o_device_remove(struct i2o_device *i2o_dev)
259{
260 i2o_driver_notify_device_remove_all(i2o_dev);
261 class_device_unregister(&i2o_dev->classdev);
262 list_del(&i2o_dev->list);
263 device_unregister(&i2o_dev->device);
264};
265
266/**
267 * i2o_device_parse_lct - Parse a previously fetched LCT and create devices
268 * @c: I2O controller from which the LCT should be parsed.
269 *
270 * The Logical Configuration Table tells us what we can talk to on the
271 * board. For every entry we create an I2O device, which is registered in
272 * the I2O core.
273 *
274 * Returns 0 on success or negative error code on failure.
275 */
276int i2o_device_parse_lct(struct i2o_controller *c)
277{
278 struct i2o_device *dev, *tmp;
279 i2o_lct *lct;
280 int i;
281 int max;
282
283 down(&c->lct_lock);
284
285 if (c->lct)
286 kfree(c->lct);
287
288 lct = c->dlct.virt;
289
290 c->lct = kmalloc(lct->table_size * 4, GFP_KERNEL);
291 if (!c->lct) {
292 up(&c->lct_lock);
293 return -ENOMEM;
294 }
295
296 if (lct->table_size * 4 > c->dlct.len) {
297 memcpy_fromio(c->lct, c->dlct.virt, c->dlct.len);
298 up(&c->lct_lock);
299 return -EAGAIN;
300 }
301
302 memcpy_fromio(c->lct, c->dlct.virt, lct->table_size * 4);
303
304 lct = c->lct;
305
306 max = (lct->table_size - 3) / 9;
307
308 pr_debug("%s: LCT has %d entries (LCT size: %d)\n", c->name, max,
309 lct->table_size);
310
311 /* remove devices, which are not in the LCT anymore */
312 list_for_each_entry_safe(dev, tmp, &c->devices, list) {
313 int found = 0;
314
315 for (i = 0; i < max; i++) {
316 if (lct->lct_entry[i].tid == dev->lct_data.tid) {
317 found = 1;
318 break;
319 }
320 }
321
322 if (!found)
323 i2o_device_remove(dev);
324 }
325
326 /* add new devices, which are new in the LCT */
327 for (i = 0; i < max; i++) {
328 int found = 0;
329
330 list_for_each_entry_safe(dev, tmp, &c->devices, list) {
331 if (lct->lct_entry[i].tid == dev->lct_data.tid) {
332 found = 1;
333 break;
334 }
335 }
336
337 if (!found)
338 i2o_device_add(c, &lct->lct_entry[i]);
339 }
340 up(&c->lct_lock);
341
342 return 0;
343};
344
345/**
346 * i2o_device_class_show_class_id - Displays class id of I2O device
347 * @cd: class device of which the class id should be displayed
348 * @buf: buffer into which the class id should be printed
349 *
350 * Returns the number of bytes which are printed into the buffer.
351 */
352static ssize_t i2o_device_class_show_class_id(struct class_device *cd,
353 char *buf)
354{
355 struct i2o_device *dev = to_i2o_device(cd->dev);
356
357 sprintf(buf, "%03x\n", dev->lct_data.class_id);
358 return strlen(buf) + 1;
359};
360
361/**
362 * i2o_device_class_show_tid - Displays TID of I2O device
363 * @cd: class device of which the TID should be displayed
364 * @buf: buffer into which the class id should be printed
365 *
366 * Returns the number of bytes which are printed into the buffer.
367 */
368static ssize_t i2o_device_class_show_tid(struct class_device *cd, char *buf)
369{
370 struct i2o_device *dev = to_i2o_device(cd->dev);
371
372 sprintf(buf, "%03x\n", dev->lct_data.tid);
373 return strlen(buf) + 1;
374};
375
376/* I2O device class attributes */
377static CLASS_DEVICE_ATTR(class_id, S_IRUGO, i2o_device_class_show_class_id,
378 NULL);
379static CLASS_DEVICE_ATTR(tid, S_IRUGO, i2o_device_class_show_tid, NULL);
380
381/**
382 * i2o_device_class_add - Adds attributes to the I2O device
383 * @cd: I2O class device which is added to the I2O device class
384 *
385 * This function get called when a I2O device is added to the class. It
386 * creates the attributes for each device and creates user/parent symlink
387 * if necessary.
388 *
389 * Returns 0 on success or negative error code on failure.
390 */
391static int i2o_device_class_add(struct class_device *cd)
392{
393 struct i2o_device *i2o_dev, *tmp;
394 struct i2o_controller *c;
395
396 i2o_dev = to_i2o_device(cd->dev);
397 c = i2o_dev->iop;
398
399 class_device_create_file(cd, &class_device_attr_class_id);
400 class_device_create_file(cd, &class_device_attr_tid);
401
402 /* create user entries for this device */
403 tmp = i2o_iop_find_device(i2o_dev->iop, i2o_dev->lct_data.user_tid);
404 if (tmp)
405 sysfs_create_link(&i2o_dev->device.kobj, &tmp->device.kobj,
406 "user");
407
408 /* create user entries refering to this device */
409 list_for_each_entry(tmp, &c->devices, list)
410 if (tmp->lct_data.user_tid == i2o_dev->lct_data.tid)
411 sysfs_create_link(&tmp->device.kobj,
412 &i2o_dev->device.kobj, "user");
413
414 /* create parent entries for this device */
415 tmp = i2o_iop_find_device(i2o_dev->iop, i2o_dev->lct_data.parent_tid);
416 if (tmp)
417 sysfs_create_link(&i2o_dev->device.kobj, &tmp->device.kobj,
418 "parent");
419
420 /* create parent entries refering to this device */
421 list_for_each_entry(tmp, &c->devices, list)
422 if (tmp->lct_data.parent_tid == i2o_dev->lct_data.tid)
423 sysfs_create_link(&tmp->device.kobj,
424 &i2o_dev->device.kobj, "parent");
425
426 return 0;
427};
428
429/* I2O device class interface */
430static struct class_interface i2o_device_class_interface = {
431 .class = &i2o_device_class,
432 .add = i2o_device_class_add
433};
434
435/*
436 * Run time support routines
437 */
438
439/* Issue UTIL_PARAMS_GET or UTIL_PARAMS_SET
440 *
441 * This function can be used for all UtilParamsGet/Set operations.
442 * The OperationList is given in oplist-buffer,
443 * and results are returned in reslist-buffer.
444 * Note that the minimum sized reslist is 8 bytes and contains
445 * ResultCount, ErrorInfoSize, BlockStatus and BlockSize.
446 */
447
448int i2o_parm_issue(struct i2o_device *i2o_dev, int cmd, void *oplist,
449 int oplen, void *reslist, int reslen)
450{
451 struct i2o_message __iomem *msg;
452 u32 m;
453 u32 *res32 = (u32 *) reslist;
454 u32 *restmp = (u32 *) reslist;
455 int len = 0;
456 int i = 0;
457 int rc;
458 struct i2o_dma res;
459 struct i2o_controller *c = i2o_dev->iop;
460 struct device *dev = &c->pdev->dev;
461
462 res.virt = NULL;
463
464 if (i2o_dma_alloc(dev, &res, reslen, GFP_KERNEL))
465 return -ENOMEM;
466
467 m = i2o_msg_get_wait(c, &msg, I2O_TIMEOUT_MESSAGE_GET);
468 if (m == I2O_QUEUE_EMPTY) {
469 i2o_dma_free(dev, &res);
470 return -ETIMEDOUT;
471 }
472
473 i = 0;
474 writel(cmd << 24 | HOST_TID << 12 | i2o_dev->lct_data.tid,
475 &msg->u.head[1]);
476 writel(0, &msg->body[i++]);
477 writel(0x4C000000 | oplen, &msg->body[i++]); /* OperationList */
478 memcpy_toio(&msg->body[i], oplist, oplen);
479 i += (oplen / 4 + (oplen % 4 ? 1 : 0));
480 writel(0xD0000000 | res.len, &msg->body[i++]); /* ResultList */
481 writel(res.phys, &msg->body[i++]);
482
483 writel(I2O_MESSAGE_SIZE(i + sizeof(struct i2o_message) / 4) |
484 SGL_OFFSET_5, &msg->u.head[0]);
485
486 rc = i2o_msg_post_wait_mem(c, m, 10, &res);
487
488 /* This only looks like a memory leak - don't "fix" it. */
489 if (rc == -ETIMEDOUT)
490 return rc;
491
492 memcpy_fromio(reslist, res.virt, res.len);
493 i2o_dma_free(dev, &res);
494
495 /* Query failed */
496 if (rc)
497 return rc;
498 /*
499 * Calculate number of bytes of Result LIST
500 * We need to loop through each Result BLOCK and grab the length
501 */
502 restmp = res32 + 1;
503 len = 1;
504 for (i = 0; i < (res32[0] & 0X0000FFFF); i++) {
505 if (restmp[0] & 0x00FF0000) { /* BlockStatus != SUCCESS */
506 printk(KERN_WARNING
507 "%s - Error:\n ErrorInfoSize = 0x%02x, "
508 "BlockStatus = 0x%02x, BlockSize = 0x%04x\n",
509 (cmd ==
510 I2O_CMD_UTIL_PARAMS_SET) ? "PARAMS_SET" :
511 "PARAMS_GET", res32[1] >> 24,
512 (res32[1] >> 16) & 0xFF, res32[1] & 0xFFFF);
513
514 /*
515 * If this is the only request,than we return an error
516 */
517 if ((res32[0] & 0x0000FFFF) == 1) {
518 return -((res32[1] >> 16) & 0xFF); /* -BlockStatus */
519 }
520 }
521 len += restmp[0] & 0x0000FFFF; /* Length of res BLOCK */
522 restmp += restmp[0] & 0x0000FFFF; /* Skip to next BLOCK */
523 }
524 return (len << 2); /* bytes used by result list */
525}
526
527/*
528 * Query one field group value or a whole scalar group.
529 */
530int i2o_parm_field_get(struct i2o_device *i2o_dev, int group, int field,
531 void *buf, int buflen)
532{
533 u16 opblk[] = { 1, 0, I2O_PARAMS_FIELD_GET, group, 1, field };
534 u8 resblk[8 + buflen]; /* 8 bytes for header */
535 int size;
536
537 if (field == -1) /* whole group */
538 opblk[4] = -1;
539
540 size = i2o_parm_issue(i2o_dev, I2O_CMD_UTIL_PARAMS_GET, opblk,
541 sizeof(opblk), resblk, sizeof(resblk));
542
543 memcpy(buf, resblk + 8, buflen); /* cut off header */
544
545 if (size > buflen)
546 return buflen;
547
548 return size;
549}
550
551/*
552 * if oper == I2O_PARAMS_TABLE_GET, get from all rows
553 * if fieldcount == -1 return all fields
554 * ibuf and ibuflen are unused (use NULL, 0)
555 * else return specific fields
556 * ibuf contains fieldindexes
557 *
558 * if oper == I2O_PARAMS_LIST_GET, get from specific rows
559 * if fieldcount == -1 return all fields
560 * ibuf contains rowcount, keyvalues
561 * else return specific fields
562 * fieldcount is # of fieldindexes
563 * ibuf contains fieldindexes, rowcount, keyvalues
564 *
565 * You could also use directly function i2o_issue_params().
566 */
567int i2o_parm_table_get(struct i2o_device *dev, int oper, int group,
568 int fieldcount, void *ibuf, int ibuflen, void *resblk,
569 int reslen)
570{
571 u16 *opblk;
572 int size;
573
574 size = 10 + ibuflen;
575 if (size % 4)
576 size += 4 - size % 4;
577
578 opblk = kmalloc(size, GFP_KERNEL);
579 if (opblk == NULL) {
580 printk(KERN_ERR "i2o: no memory for query buffer.\n");
581 return -ENOMEM;
582 }
583
584 opblk[0] = 1; /* operation count */
585 opblk[1] = 0; /* pad */
586 opblk[2] = oper;
587 opblk[3] = group;
588 opblk[4] = fieldcount;
589 memcpy(opblk + 5, ibuf, ibuflen); /* other params */
590
591 size = i2o_parm_issue(dev, I2O_CMD_UTIL_PARAMS_GET, opblk,
592 size, resblk, reslen);
593
594 kfree(opblk);
595 if (size > reslen)
596 return reslen;
597
598 return size;
599}
600
601/**
602 * i2o_device_init - Initialize I2O devices
603 *
604 * Registers the I2O device class.
605 *
606 * Returns 0 on success or negative error code on failure.
607 */
608int i2o_device_init(void)
609{
610 int rc;
611
612 rc = class_register(&i2o_device_class);
613 if (rc)
614 return rc;
615
616 return class_interface_register(&i2o_device_class_interface);
617};
618
619/**
620 * i2o_device_exit - I2O devices exit function
621 *
622 * Unregisters the I2O device class.
623 */
624void i2o_device_exit(void)
625{
626 class_interface_register(&i2o_device_class_interface);
627 class_unregister(&i2o_device_class);
628};
629
630EXPORT_SYMBOL(i2o_device_claim);
631EXPORT_SYMBOL(i2o_device_claim_release);
632EXPORT_SYMBOL(i2o_parm_field_get);
633EXPORT_SYMBOL(i2o_parm_table_get);
634EXPORT_SYMBOL(i2o_parm_issue);
diff --git a/drivers/message/i2o/driver.c b/drivers/message/i2o/driver.c
new file mode 100644
index 000000000000..91f4edbb2a27
--- /dev/null
+++ b/drivers/message/i2o/driver.c
@@ -0,0 +1,374 @@
1/*
2 * Functions to handle I2O drivers (OSMs) and I2O bus type for sysfs
3 *
4 * Copyright (C) 2004 Markus Lidel <Markus.Lidel@shadowconnect.com>
5 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation; either version 2 of the License, or (at your
9 * option) any later version.
10 *
11 * Fixes/additions:
12 * Markus Lidel <Markus.Lidel@shadowconnect.com>
13 * initial version.
14 */
15
16#include <linux/device.h>
17#include <linux/module.h>
18#include <linux/rwsem.h>
19#include <linux/i2o.h>
20
21/* max_drivers - Maximum I2O drivers (OSMs) which could be registered */
22unsigned int i2o_max_drivers = I2O_MAX_DRIVERS;
23module_param_named(max_drivers, i2o_max_drivers, uint, 0);
24MODULE_PARM_DESC(max_drivers, "maximum number of OSM's to support");
25
26/* I2O drivers lock and array */
27static spinlock_t i2o_drivers_lock;
28static struct i2o_driver **i2o_drivers;
29
30/**
31 * i2o_bus_match - Tell if a I2O device class id match the class ids of
32 * the I2O driver (OSM)
33 *
34 * @dev: device which should be verified
35 * @drv: the driver to match against
36 *
37 * Used by the bus to check if the driver wants to handle the device.
38 *
39 * Returns 1 if the class ids of the driver match the class id of the
40 * device, otherwise 0.
41 */
42static int i2o_bus_match(struct device *dev, struct device_driver *drv)
43{
44 struct i2o_device *i2o_dev = to_i2o_device(dev);
45 struct i2o_driver *i2o_drv = to_i2o_driver(drv);
46 struct i2o_class_id *ids = i2o_drv->classes;
47
48 if (ids)
49 while (ids->class_id != I2O_CLASS_END) {
50 if (ids->class_id == i2o_dev->lct_data.class_id)
51 return 1;
52 ids++;
53 }
54 return 0;
55};
56
57/* I2O bus type */
58struct bus_type i2o_bus_type = {
59 .name = "i2o",
60 .match = i2o_bus_match,
61};
62
63/**
64 * i2o_driver_register - Register a I2O driver (OSM) in the I2O core
65 * @drv: I2O driver which should be registered
66 *
67 * Registers the OSM drv in the I2O core and creates an event queues if
68 * necessary.
69 *
70 * Returns 0 on success or negative error code on failure.
71 */
72int i2o_driver_register(struct i2o_driver *drv)
73{
74 struct i2o_controller *c;
75 int i;
76 int rc = 0;
77 unsigned long flags;
78
79 pr_debug("i2o: Register driver %s\n", drv->name);
80
81 if (drv->event) {
82 drv->event_queue = create_workqueue(drv->name);
83 if (!drv->event_queue) {
84 printk(KERN_ERR "i2o: Could not initialize event queue "
85 "for driver %s\n", drv->name);
86 return -EFAULT;
87 }
88 pr_debug("i2o: Event queue initialized for driver %s\n",
89 drv->name);
90 } else
91 drv->event_queue = NULL;
92
93 drv->driver.name = drv->name;
94 drv->driver.bus = &i2o_bus_type;
95
96 spin_lock_irqsave(&i2o_drivers_lock, flags);
97
98 for (i = 0; i2o_drivers[i]; i++)
99 if (i >= i2o_max_drivers) {
100 printk(KERN_ERR "i2o: too many drivers registered, "
101 "increase max_drivers\n");
102 spin_unlock_irqrestore(&i2o_drivers_lock, flags);
103 return -EFAULT;
104 }
105
106 drv->context = i;
107 i2o_drivers[i] = drv;
108
109 spin_unlock_irqrestore(&i2o_drivers_lock, flags);
110
111 pr_debug("i2o: driver %s gets context id %d\n", drv->name,
112 drv->context);
113
114 list_for_each_entry(c, &i2o_controllers, list) {
115 struct i2o_device *i2o_dev;
116
117 i2o_driver_notify_controller_add(drv, c);
118 list_for_each_entry(i2o_dev, &c->devices, list)
119 i2o_driver_notify_device_add(drv, i2o_dev);
120 }
121
122
123 rc = driver_register(&drv->driver);
124 if (rc)
125 destroy_workqueue(drv->event_queue);
126
127 return rc;
128};
129
130/**
131 * i2o_driver_unregister - Unregister a I2O driver (OSM) from the I2O core
132 * @drv: I2O driver which should be unregistered
133 *
134 * Unregisters the OSM drv from the I2O core and cleanup event queues if
135 * necessary.
136 */
137void i2o_driver_unregister(struct i2o_driver *drv)
138{
139 struct i2o_controller *c;
140 unsigned long flags;
141
142 pr_debug("i2o: unregister driver %s\n", drv->name);
143
144 driver_unregister(&drv->driver);
145
146 list_for_each_entry(c, &i2o_controllers, list) {
147 struct i2o_device *i2o_dev;
148
149 list_for_each_entry(i2o_dev, &c->devices, list)
150 i2o_driver_notify_device_remove(drv, i2o_dev);
151
152 i2o_driver_notify_controller_remove(drv, c);
153 }
154
155 spin_lock_irqsave(&i2o_drivers_lock, flags);
156 i2o_drivers[drv->context] = NULL;
157 spin_unlock_irqrestore(&i2o_drivers_lock, flags);
158
159 if (drv->event_queue) {
160 destroy_workqueue(drv->event_queue);
161 drv->event_queue = NULL;
162 pr_debug("i2o: event queue removed for %s\n", drv->name);
163 }
164};
165
166/**
167 * i2o_driver_dispatch - dispatch an I2O reply message
168 * @c: I2O controller of the message
169 * @m: I2O message number
170 * @msg: I2O message to be delivered
171 *
172 * The reply is delivered to the driver from which the original message
173 * was. This function is only called from interrupt context.
174 *
175 * Returns 0 on success and the message should not be flushed. Returns > 0
176 * on success and if the message should be flushed afterwords. Returns
177 * negative error code on failure (the message will be flushed too).
178 */
179int i2o_driver_dispatch(struct i2o_controller *c, u32 m,
180 struct i2o_message __iomem *msg)
181{
182 struct i2o_driver *drv;
183 u32 context = readl(&msg->u.s.icntxt);
184
185 if (likely(context < i2o_max_drivers)) {
186 spin_lock(&i2o_drivers_lock);
187 drv = i2o_drivers[context];
188 spin_unlock(&i2o_drivers_lock);
189
190 if (unlikely(!drv)) {
191 printk(KERN_WARNING "%s: Spurious reply to unknown "
192 "driver %d\n", c->name, context);
193 return -EIO;
194 }
195
196 if ((readl(&msg->u.head[1]) >> 24) == I2O_CMD_UTIL_EVT_REGISTER) {
197 struct i2o_device *dev, *tmp;
198 struct i2o_event *evt;
199 u16 size;
200 u16 tid;
201
202 tid = readl(&msg->u.head[1]) & 0x1fff;
203
204 pr_debug("%s: event received from device %d\n", c->name,
205 tid);
206
207 /* cut of header from message size (in 32-bit words) */
208 size = (readl(&msg->u.head[0]) >> 16) - 5;
209
210 evt = kmalloc(size * 4 + sizeof(*evt), GFP_ATOMIC);
211 if (!evt)
212 return -ENOMEM;
213 memset(evt, 0, size * 4 + sizeof(*evt));
214
215 evt->size = size;
216 memcpy_fromio(&evt->tcntxt, &msg->u.s.tcntxt,
217 (size + 2) * 4);
218
219 list_for_each_entry_safe(dev, tmp, &c->devices, list)
220 if (dev->lct_data.tid == tid) {
221 evt->i2o_dev = dev;
222 break;
223 }
224
225 INIT_WORK(&evt->work, (void (*)(void *))drv->event,
226 evt);
227 queue_work(drv->event_queue, &evt->work);
228 return 1;
229 }
230
231 if (likely(drv->reply))
232 return drv->reply(c, m, msg);
233 else
234 pr_debug("%s: Reply to driver %s, but no reply function"
235 " defined!\n", c->name, drv->name);
236 return -EIO;
237 } else
238 printk(KERN_WARNING "%s: Spurious reply to unknown driver "
239 "%d\n", c->name, readl(&msg->u.s.icntxt));
240 return -EIO;
241}
242
243/**
244 * i2o_driver_notify_controller_add_all - Send notify of added controller
245 * to all I2O drivers
246 *
247 * Send notifications to all registered drivers that a new controller was
248 * added.
249 */
250void i2o_driver_notify_controller_add_all(struct i2o_controller *c)
251{
252 int i;
253 struct i2o_driver *drv;
254
255 for (i = 0; i < I2O_MAX_DRIVERS; i++) {
256 drv = i2o_drivers[i];
257
258 if (drv)
259 i2o_driver_notify_controller_add(drv, c);
260 }
261}
262
263/**
264 * i2o_driver_notify_controller_remove_all - Send notify of removed
265 * controller to all I2O drivers
266 *
267 * Send notifications to all registered drivers that a controller was
268 * removed.
269 */
270void i2o_driver_notify_controller_remove_all(struct i2o_controller *c)
271{
272 int i;
273 struct i2o_driver *drv;
274
275 for (i = 0; i < I2O_MAX_DRIVERS; i++) {
276 drv = i2o_drivers[i];
277
278 if (drv)
279 i2o_driver_notify_controller_remove(drv, c);
280 }
281}
282
283/**
284 * i2o_driver_notify_device_add_all - Send notify of added device to all
285 * I2O drivers
286 *
287 * Send notifications to all registered drivers that a device was added.
288 */
289void i2o_driver_notify_device_add_all(struct i2o_device *i2o_dev)
290{
291 int i;
292 struct i2o_driver *drv;
293
294 for (i = 0; i < I2O_MAX_DRIVERS; i++) {
295 drv = i2o_drivers[i];
296
297 if (drv)
298 i2o_driver_notify_device_add(drv, i2o_dev);
299 }
300}
301
302/**
303 * i2o_driver_notify_device_remove_all - Send notify of removed device to
304 * all I2O drivers
305 *
306 * Send notifications to all registered drivers that a device was removed.
307 */
308void i2o_driver_notify_device_remove_all(struct i2o_device *i2o_dev)
309{
310 int i;
311 struct i2o_driver *drv;
312
313 for (i = 0; i < I2O_MAX_DRIVERS; i++) {
314 drv = i2o_drivers[i];
315
316 if (drv)
317 i2o_driver_notify_device_remove(drv, i2o_dev);
318 }
319}
320
321/**
322 * i2o_driver_init - initialize I2O drivers (OSMs)
323 *
324 * Registers the I2O bus and allocate memory for the array of OSMs.
325 *
326 * Returns 0 on success or negative error code on failure.
327 */
328int __init i2o_driver_init(void)
329{
330 int rc = 0;
331
332 spin_lock_init(&i2o_drivers_lock);
333
334 if ((i2o_max_drivers < 2) || (i2o_max_drivers > 64) ||
335 ((i2o_max_drivers ^ (i2o_max_drivers - 1)) !=
336 (2 * i2o_max_drivers - 1))) {
337 printk(KERN_WARNING "i2o: max_drivers set to %d, but must be "
338 ">=2 and <= 64 and a power of 2\n", i2o_max_drivers);
339 i2o_max_drivers = I2O_MAX_DRIVERS;
340 }
341 printk(KERN_INFO "i2o: max drivers = %d\n", i2o_max_drivers);
342
343 i2o_drivers =
344 kmalloc(i2o_max_drivers * sizeof(*i2o_drivers), GFP_KERNEL);
345 if (!i2o_drivers)
346 return -ENOMEM;
347
348 memset(i2o_drivers, 0, i2o_max_drivers * sizeof(*i2o_drivers));
349
350 rc = bus_register(&i2o_bus_type);
351
352 if (rc < 0)
353 kfree(i2o_drivers);
354
355 return rc;
356};
357
358/**
359 * i2o_driver_exit - clean up I2O drivers (OSMs)
360 *
361 * Unregisters the I2O bus and free driver array.
362 */
363void __exit i2o_driver_exit(void)
364{
365 bus_unregister(&i2o_bus_type);
366 kfree(i2o_drivers);
367};
368
369EXPORT_SYMBOL(i2o_driver_register);
370EXPORT_SYMBOL(i2o_driver_unregister);
371EXPORT_SYMBOL(i2o_driver_notify_controller_add_all);
372EXPORT_SYMBOL(i2o_driver_notify_controller_remove_all);
373EXPORT_SYMBOL(i2o_driver_notify_device_add_all);
374EXPORT_SYMBOL(i2o_driver_notify_device_remove_all);
diff --git a/drivers/message/i2o/exec-osm.c b/drivers/message/i2o/exec-osm.c
new file mode 100644
index 000000000000..79c1cbfb8f44
--- /dev/null
+++ b/drivers/message/i2o/exec-osm.c
@@ -0,0 +1,507 @@
1/*
2 * Executive OSM
3 *
4 * Copyright (C) 1999-2002 Red Hat Software
5 *
6 * Written by Alan Cox, Building Number Three Ltd
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the
10 * Free Software Foundation; either version 2 of the License, or (at your
11 * option) any later version.
12 *
13 * A lot of the I2O message side code from this is taken from the Red
14 * Creek RCPCI45 adapter driver by Red Creek Communications
15 *
16 * Fixes/additions:
17 * Philipp Rumpf
18 * Juha Sievänen <Juha.Sievanen@cs.Helsinki.FI>
19 * Auvo Häkkinen <Auvo.Hakkinen@cs.Helsinki.FI>
20 * Deepak Saxena <deepak@plexity.net>
21 * Boji T Kannanthanam <boji.t.kannanthanam@intel.com>
22 * Alan Cox <alan@redhat.com>:
23 * Ported to Linux 2.5.
24 * Markus Lidel <Markus.Lidel@shadowconnect.com>:
25 * Minor fixes for 2.6.
26 * Markus Lidel <Markus.Lidel@shadowconnect.com>:
27 * Support for sysfs included.
28 */
29
30#include <linux/module.h>
31#include <linux/i2o.h>
32#include <linux/delay.h>
33
34#define OSM_NAME "exec-osm"
35
36struct i2o_driver i2o_exec_driver;
37
38static int i2o_exec_lct_notify(struct i2o_controller *c, u32 change_ind);
39
40/* Module internal functions from other sources */
41extern int i2o_device_parse_lct(struct i2o_controller *);
42
43/* global wait list for POST WAIT */
44static LIST_HEAD(i2o_exec_wait_list);
45
46/* Wait struct needed for POST WAIT */
47struct i2o_exec_wait {
48 wait_queue_head_t *wq; /* Pointer to Wait queue */
49 struct i2o_dma dma; /* DMA buffers to free on failure */
50 u32 tcntxt; /* transaction context from reply */
51 int complete; /* 1 if reply received otherwise 0 */
52 u32 m; /* message id */
53 struct i2o_message __iomem *msg; /* pointer to the reply message */
54 struct list_head list; /* node in global wait list */
55};
56
57/* Exec OSM class handling definition */
58static struct i2o_class_id i2o_exec_class_id[] = {
59 {I2O_CLASS_EXECUTIVE},
60 {I2O_CLASS_END}
61};
62
63/**
64 * i2o_exec_wait_alloc - Allocate a i2o_exec_wait struct an initialize it
65 *
66 * Allocate the i2o_exec_wait struct and initialize the wait.
67 *
68 * Returns i2o_exec_wait pointer on success or negative error code on
69 * failure.
70 */
71static struct i2o_exec_wait *i2o_exec_wait_alloc(void)
72{
73 struct i2o_exec_wait *wait;
74
75 wait = kmalloc(sizeof(*wait), GFP_KERNEL);
76 if (!wait)
77 return ERR_PTR(-ENOMEM);
78
79 memset(wait, 0, sizeof(*wait));
80
81 INIT_LIST_HEAD(&wait->list);
82
83 return wait;
84};
85
86/**
87 * i2o_exec_wait_free - Free a i2o_exec_wait struct
88 * @i2o_exec_wait: I2O wait data which should be cleaned up
89 */
90static void i2o_exec_wait_free(struct i2o_exec_wait *wait)
91{
92 kfree(wait);
93};
94
95/**
96 * i2o_msg_post_wait_mem - Post and wait a message with DMA buffers
97 * @c: controller
98 * @m: message to post
99 * @timeout: time in seconds to wait
100 * @dma: i2o_dma struct of the DMA buffer to free on failure
101 *
102 * This API allows an OSM to post a message and then be told whether or
103 * not the system received a successful reply. If the message times out
104 * then the value '-ETIMEDOUT' is returned. This is a special case. In
105 * this situation the message may (should) complete at an indefinite time
106 * in the future. When it completes it will use the memory buffer
107 * attached to the request. If -ETIMEDOUT is returned then the memory
108 * buffer must not be freed. Instead the event completion will free them
109 * for you. In all other cases the buffer are your problem.
110 *
111 * Returns 0 on success or negative error code on failure.
112 */
113int i2o_msg_post_wait_mem(struct i2o_controller *c, u32 m, unsigned long
114 timeout, struct i2o_dma *dma)
115{
116 DECLARE_WAIT_QUEUE_HEAD(wq);
117 struct i2o_exec_wait *wait;
118 static u32 tcntxt = 0x80000000;
119 struct i2o_message __iomem *msg = c->in_queue.virt + m;
120 int rc = 0;
121
122 wait = i2o_exec_wait_alloc();
123 if (!wait)
124 return -ENOMEM;
125
126 if (tcntxt == 0xffffffff)
127 tcntxt = 0x80000000;
128
129 if (dma)
130 wait->dma = *dma;
131
132 /*
133 * Fill in the message initiator context and transaction context.
134 * We will only use transaction contexts >= 0x80000000 for POST WAIT,
135 * so we could find a POST WAIT reply easier in the reply handler.
136 */
137 writel(i2o_exec_driver.context, &msg->u.s.icntxt);
138 wait->tcntxt = tcntxt++;
139 writel(wait->tcntxt, &msg->u.s.tcntxt);
140
141 /*
142 * Post the message to the controller. At some point later it will
143 * return. If we time out before it returns then complete will be zero.
144 */
145 i2o_msg_post(c, m);
146
147 if (!wait->complete) {
148 wait->wq = &wq;
149 /*
150 * we add elements add the head, because if a entry in the list
151 * will never be removed, we have to iterate over it every time
152 */
153 list_add(&wait->list, &i2o_exec_wait_list);
154
155 wait_event_interruptible_timeout(wq, wait->complete,
156 timeout * HZ);
157
158 wait->wq = NULL;
159 }
160
161 barrier();
162
163 if (wait->complete) {
164 if (readl(&wait->msg->body[0]) >> 24)
165 rc = readl(&wait->msg->body[0]) & 0xff;
166 i2o_flush_reply(c, wait->m);
167 i2o_exec_wait_free(wait);
168 } else {
169 /*
170 * We cannot remove it now. This is important. When it does
171 * terminate (which it must do if the controller has not
172 * died...) then it will otherwise scribble on stuff.
173 *
174 * FIXME: try abort message
175 */
176 if (dma)
177 dma->virt = NULL;
178
179 rc = -ETIMEDOUT;
180 }
181
182 return rc;
183};
184
185/**
186 * i2o_msg_post_wait_complete - Reply to a i2o_msg_post request from IOP
187 * @c: I2O controller which answers
188 * @m: message id
189 * @msg: pointer to the I2O reply message
190 *
191 * This function is called in interrupt context only. If the reply reached
192 * before the timeout, the i2o_exec_wait struct is filled with the message
193 * and the task will be waked up. The task is now responsible for returning
194 * the message m back to the controller! If the message reaches us after
195 * the timeout clean up the i2o_exec_wait struct (including allocated
196 * DMA buffer).
197 *
198 * Return 0 on success and if the message m should not be given back to the
199 * I2O controller, or >0 on success and if the message should be given back
200 * afterwords. Returns negative error code on failure. In this case the
201 * message must also be given back to the controller.
202 */
203static int i2o_msg_post_wait_complete(struct i2o_controller *c, u32 m,
204 struct i2o_message __iomem *msg)
205{
206 struct i2o_exec_wait *wait, *tmp;
207 static spinlock_t lock;
208 int rc = 1;
209 u32 context;
210
211 spin_lock_init(&lock);
212
213 context = readl(&msg->u.s.tcntxt);
214
215 /*
216 * We need to search through the i2o_exec_wait_list to see if the given
217 * message is still outstanding. If not, it means that the IOP took
218 * longer to respond to the message than we had allowed and timer has
219 * already expired. Not much we can do about that except log it for
220 * debug purposes, increase timeout, and recompile.
221 */
222 spin_lock(&lock);
223 list_for_each_entry_safe(wait, tmp, &i2o_exec_wait_list, list) {
224 if (wait->tcntxt == context) {
225 list_del(&wait->list);
226
227 wait->m = m;
228 wait->msg = msg;
229 wait->complete = 1;
230
231 barrier();
232
233 if (wait->wq) {
234 wake_up_interruptible(wait->wq);
235 rc = 0;
236 } else {
237 struct device *dev;
238
239 dev = &c->pdev->dev;
240
241 pr_debug("%s: timedout reply received!\n",
242 c->name);
243 i2o_dma_free(dev, &wait->dma);
244 i2o_exec_wait_free(wait);
245 rc = -1;
246 }
247
248 spin_unlock(&lock);
249
250 return rc;
251 }
252 }
253
254 spin_unlock(&lock);
255
256 pr_debug("%s: Bogus reply in POST WAIT (tr-context: %08x)!\n", c->name,
257 context);
258
259 return -1;
260};
261
262/**
263 * i2o_exec_probe - Called if a new I2O device (executive class) appears
264 * @dev: I2O device which should be probed
265 *
266 * Registers event notification for every event from Executive device. The
267 * return is always 0, because we want all devices of class Executive.
268 *
269 * Returns 0 on success.
270 */
271static int i2o_exec_probe(struct device *dev)
272{
273 struct i2o_device *i2o_dev = to_i2o_device(dev);
274
275 i2o_event_register(i2o_dev, &i2o_exec_driver, 0, 0xffffffff);
276
277 i2o_dev->iop->exec = i2o_dev;
278
279 return 0;
280};
281
282/**
283 * i2o_exec_remove - Called on I2O device removal
284 * @dev: I2O device which was removed
285 *
286 * Unregisters event notification from Executive I2O device.
287 *
288 * Returns 0 on success.
289 */
290static int i2o_exec_remove(struct device *dev)
291{
292 i2o_event_register(to_i2o_device(dev), &i2o_exec_driver, 0, 0);
293
294 return 0;
295};
296
297/**
298 * i2o_exec_lct_modified - Called on LCT NOTIFY reply
299 * @c: I2O controller on which the LCT has modified
300 *
301 * This function handles asynchronus LCT NOTIFY replies. It parses the
302 * new LCT and if the buffer for the LCT was to small sends a LCT NOTIFY
303 * again.
304 */
305static void i2o_exec_lct_modified(struct i2o_controller *c)
306{
307 if (i2o_device_parse_lct(c) == -EAGAIN)
308 i2o_exec_lct_notify(c, 0);
309};
310
311/**
312 * i2o_exec_reply - I2O Executive reply handler
313 * @c: I2O controller from which the reply comes
314 * @m: message id
315 * @msg: pointer to the I2O reply message
316 *
317 * This function is always called from interrupt context. If a POST WAIT
318 * reply was received, pass it to the complete function. If a LCT NOTIFY
319 * reply was received, a new event is created to handle the update.
320 *
321 * Returns 0 on success and if the reply should not be flushed or > 0
322 * on success and if the reply should be flushed. Returns negative error
323 * code on failure and if the reply should be flushed.
324 */
325static int i2o_exec_reply(struct i2o_controller *c, u32 m,
326 struct i2o_message *msg)
327{
328 if (le32_to_cpu(msg->u.head[0]) & MSG_FAIL) { // Fail bit is set
329 struct i2o_message __iomem *pmsg; /* preserved message */
330 u32 pm;
331
332 pm = le32_to_cpu(msg->body[3]);
333
334 pmsg = i2o_msg_in_to_virt(c, pm);
335
336 i2o_report_status(KERN_INFO, "i2o_core", msg);
337
338 /* Release the preserved msg by resubmitting it as a NOP */
339 i2o_msg_nop(c, pm);
340
341 /* If reply to i2o_post_wait failed, return causes a timeout */
342 return -1;
343 }
344
345 if (le32_to_cpu(msg->u.s.tcntxt) & 0x80000000)
346 return i2o_msg_post_wait_complete(c, m, msg);
347
348 if ((le32_to_cpu(msg->u.head[1]) >> 24) == I2O_CMD_LCT_NOTIFY) {
349 struct work_struct *work;
350
351 pr_debug("%s: LCT notify received\n", c->name);
352
353 work = kmalloc(sizeof(*work), GFP_ATOMIC);
354 if (!work)
355 return -ENOMEM;
356
357 INIT_WORK(work, (void (*)(void *))i2o_exec_lct_modified, c);
358 queue_work(i2o_exec_driver.event_queue, work);
359 return 1;
360 }
361
362 /*
363 * If this happens, we want to dump the message to the syslog so
364 * it can be sent back to the card manufacturer by the end user
365 * to aid in debugging.
366 *
367 */
368 printk(KERN_WARNING "%s: Unsolicited message reply sent to core!"
369 "Message dumped to syslog\n", c->name);
370 i2o_dump_message(msg);
371
372 return -EFAULT;
373}
374
375/**
376 * i2o_exec_event - Event handling function
377 * @evt: Event which occurs
378 *
379 * Handles events send by the Executive device. At the moment does not do
380 * anything useful.
381 */
382static void i2o_exec_event(struct i2o_event *evt)
383{
384 osm_info("Event received from device: %d\n",
385 evt->i2o_dev->lct_data.tid);
386 kfree(evt);
387};
388
389/**
390 * i2o_exec_lct_get - Get the IOP's Logical Configuration Table
391 * @c: I2O controller from which the LCT should be fetched
392 *
393 * Send a LCT NOTIFY request to the controller, and wait
394 * I2O_TIMEOUT_LCT_GET seconds until arrival of response. If the LCT is
395 * to large, retry it.
396 *
397 * Returns 0 on success or negative error code on failure.
398 */
399int i2o_exec_lct_get(struct i2o_controller *c)
400{
401 struct i2o_message __iomem *msg;
402 u32 m;
403 int i = 0;
404 int rc = -EAGAIN;
405
406 for (i = 1; i <= I2O_LCT_GET_TRIES; i++) {
407 m = i2o_msg_get_wait(c, &msg, I2O_TIMEOUT_MESSAGE_GET);
408 if (m == I2O_QUEUE_EMPTY)
409 return -ETIMEDOUT;
410
411 writel(EIGHT_WORD_MSG_SIZE | SGL_OFFSET_6, &msg->u.head[0]);
412 writel(I2O_CMD_LCT_NOTIFY << 24 | HOST_TID << 12 | ADAPTER_TID,
413 &msg->u.head[1]);
414 writel(0xffffffff, &msg->body[0]);
415 writel(0x00000000, &msg->body[1]);
416 writel(0xd0000000 | c->dlct.len, &msg->body[2]);
417 writel(c->dlct.phys, &msg->body[3]);
418
419 rc = i2o_msg_post_wait(c, m, I2O_TIMEOUT_LCT_GET);
420 if (rc < 0)
421 break;
422
423 rc = i2o_device_parse_lct(c);
424 if (rc != -EAGAIN)
425 break;
426 }
427
428 return rc;
429}
430
431/**
432 * i2o_exec_lct_notify - Send a asynchronus LCT NOTIFY request
433 * @c: I2O controller to which the request should be send
434 * @change_ind: change indicator
435 *
436 * This function sends a LCT NOTIFY request to the I2O controller with
437 * the change indicator change_ind. If the change_ind == 0 the controller
438 * replies immediately after the request. If change_ind > 0 the reply is
439 * send after change indicator of the LCT is > change_ind.
440 */
441static int i2o_exec_lct_notify(struct i2o_controller *c, u32 change_ind)
442{
443 i2o_status_block *sb = c->status_block.virt;
444 struct device *dev;
445 struct i2o_message __iomem *msg;
446 u32 m;
447
448 dev = &c->pdev->dev;
449
450 if (i2o_dma_realloc(dev, &c->dlct, sb->expected_lct_size, GFP_KERNEL))
451 return -ENOMEM;
452
453 m = i2o_msg_get_wait(c, &msg, I2O_TIMEOUT_MESSAGE_GET);
454 if (m == I2O_QUEUE_EMPTY)
455 return -ETIMEDOUT;
456
457 writel(EIGHT_WORD_MSG_SIZE | SGL_OFFSET_6, &msg->u.head[0]);
458 writel(I2O_CMD_LCT_NOTIFY << 24 | HOST_TID << 12 | ADAPTER_TID,
459 &msg->u.head[1]);
460 writel(i2o_exec_driver.context, &msg->u.s.icntxt);
461 writel(0, &msg->u.s.tcntxt); /* FIXME */
462 writel(0xffffffff, &msg->body[0]);
463 writel(change_ind, &msg->body[1]);
464 writel(0xd0000000 | c->dlct.len, &msg->body[2]);
465 writel(c->dlct.phys, &msg->body[3]);
466
467 i2o_msg_post(c, m);
468
469 return 0;
470};
471
472/* Exec OSM driver struct */
473struct i2o_driver i2o_exec_driver = {
474 .name = OSM_NAME,
475 .reply = i2o_exec_reply,
476 .event = i2o_exec_event,
477 .classes = i2o_exec_class_id,
478 .driver = {
479 .probe = i2o_exec_probe,
480 .remove = i2o_exec_remove,
481 },
482};
483
484/**
485 * i2o_exec_init - Registers the Exec OSM
486 *
487 * Registers the Exec OSM in the I2O core.
488 *
489 * Returns 0 on success or negative error code on failure.
490 */
491int __init i2o_exec_init(void)
492{
493 return i2o_driver_register(&i2o_exec_driver);
494};
495
496/**
497 * i2o_exec_exit - Removes the Exec OSM
498 *
499 * Unregisters the Exec OSM from the I2O core.
500 */
501void __exit i2o_exec_exit(void)
502{
503 i2o_driver_unregister(&i2o_exec_driver);
504};
505
506EXPORT_SYMBOL(i2o_msg_post_wait_mem);
507EXPORT_SYMBOL(i2o_exec_lct_get);
diff --git a/drivers/message/i2o/i2o_block.c b/drivers/message/i2o/i2o_block.c
new file mode 100644
index 000000000000..7b74c87b569e
--- /dev/null
+++ b/drivers/message/i2o/i2o_block.c
@@ -0,0 +1,1247 @@
1/*
2 * Block OSM
3 *
4 * Copyright (C) 1999-2002 Red Hat Software
5 *
6 * Written by Alan Cox, Building Number Three Ltd
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the
10 * Free Software Foundation; either version 2 of the License, or (at your
11 * option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful, but
14 * WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * General Public License for more details.
17 *
18 * For the purpose of avoiding doubt the preferred form of the work
19 * for making modifications shall be a standards compliant form such
20 * gzipped tar and not one requiring a proprietary or patent encumbered
21 * tool to unpack.
22 *
23 * Fixes/additions:
24 * Steve Ralston:
25 * Multiple device handling error fixes,
26 * Added a queue depth.
27 * Alan Cox:
28 * FC920 has an rmw bug. Dont or in the end marker.
29 * Removed queue walk, fixed for 64bitness.
30 * Rewrote much of the code over time
31 * Added indirect block lists
32 * Handle 64K limits on many controllers
33 * Don't use indirects on the Promise (breaks)
34 * Heavily chop down the queue depths
35 * Deepak Saxena:
36 * Independent queues per IOP
37 * Support for dynamic device creation/deletion
38 * Code cleanup
39 * Support for larger I/Os through merge* functions
40 * (taken from DAC960 driver)
41 * Boji T Kannanthanam:
42 * Set the I2O Block devices to be detected in increasing
43 * order of TIDs during boot.
44 * Search and set the I2O block device that we boot off
45 * from as the first device to be claimed (as /dev/i2o/hda)
46 * Properly attach/detach I2O gendisk structure from the
47 * system gendisk list. The I2O block devices now appear in
48 * /proc/partitions.
49 * Markus Lidel <Markus.Lidel@shadowconnect.com>:
50 * Minor bugfixes for 2.6.
51 */
52
53#include <linux/module.h>
54#include <linux/i2o.h>
55
56#include <linux/mempool.h>
57
58#include <linux/genhd.h>
59#include <linux/blkdev.h>
60#include <linux/hdreg.h>
61
62#include "i2o_block.h"
63
64#define OSM_NAME "block-osm"
65#define OSM_VERSION "$Rev$"
66#define OSM_DESCRIPTION "I2O Block Device OSM"
67
68static struct i2o_driver i2o_block_driver;
69
70/* global Block OSM request mempool */
71static struct i2o_block_mempool i2o_blk_req_pool;
72
73/* Block OSM class handling definition */
74static struct i2o_class_id i2o_block_class_id[] = {
75 {I2O_CLASS_RANDOM_BLOCK_STORAGE},
76 {I2O_CLASS_END}
77};
78
79/**
80 * i2o_block_device_free - free the memory of the I2O Block device
81 * @dev: I2O Block device, which should be cleaned up
82 *
83 * Frees the request queue, gendisk and the i2o_block_device structure.
84 */
85static void i2o_block_device_free(struct i2o_block_device *dev)
86{
87 blk_cleanup_queue(dev->gd->queue);
88
89 put_disk(dev->gd);
90
91 kfree(dev);
92};
93
94/**
95 * i2o_block_remove - remove the I2O Block device from the system again
96 * @dev: I2O Block device which should be removed
97 *
98 * Remove gendisk from system and free all allocated memory.
99 *
100 * Always returns 0.
101 */
102static int i2o_block_remove(struct device *dev)
103{
104 struct i2o_device *i2o_dev = to_i2o_device(dev);
105 struct i2o_block_device *i2o_blk_dev = dev_get_drvdata(dev);
106
107 osm_info("Device removed %s\n", i2o_blk_dev->gd->disk_name);
108
109 i2o_event_register(i2o_dev, &i2o_block_driver, 0, 0);
110
111 del_gendisk(i2o_blk_dev->gd);
112
113 dev_set_drvdata(dev, NULL);
114
115 i2o_device_claim_release(i2o_dev);
116
117 i2o_block_device_free(i2o_blk_dev);
118
119 return 0;
120};
121
122/**
123 * i2o_block_device flush - Flush all dirty data of I2O device dev
124 * @dev: I2O device which should be flushed
125 *
126 * Flushes all dirty data on device dev.
127 *
128 * Returns 0 on success or negative error code on failure.
129 */
130static int i2o_block_device_flush(struct i2o_device *dev)
131{
132 struct i2o_message __iomem *msg;
133 u32 m;
134
135 m = i2o_msg_get_wait(dev->iop, &msg, I2O_TIMEOUT_MESSAGE_GET);
136 if (m == I2O_QUEUE_EMPTY)
137 return -ETIMEDOUT;
138
139 writel(FIVE_WORD_MSG_SIZE | SGL_OFFSET_0, &msg->u.head[0]);
140 writel(I2O_CMD_BLOCK_CFLUSH << 24 | HOST_TID << 12 | dev->lct_data.tid,
141 &msg->u.head[1]);
142 writel(60 << 16, &msg->body[0]);
143 osm_debug("Flushing...\n");
144
145 return i2o_msg_post_wait(dev->iop, m, 60);
146};
147
148/**
149 * i2o_block_device_mount - Mount (load) the media of device dev
150 * @dev: I2O device which should receive the mount request
151 * @media_id: Media Identifier
152 *
153 * Load a media into drive. Identifier should be set to -1, because the
154 * spec does not support any other value.
155 *
156 * Returns 0 on success or negative error code on failure.
157 */
158static int i2o_block_device_mount(struct i2o_device *dev, u32 media_id)
159{
160 struct i2o_message __iomem *msg;
161 u32 m;
162
163 m = i2o_msg_get_wait(dev->iop, &msg, I2O_TIMEOUT_MESSAGE_GET);
164 if (m == I2O_QUEUE_EMPTY)
165 return -ETIMEDOUT;
166
167 writel(FIVE_WORD_MSG_SIZE | SGL_OFFSET_0, &msg->u.head[0]);
168 writel(I2O_CMD_BLOCK_MMOUNT << 24 | HOST_TID << 12 | dev->lct_data.tid,
169 &msg->u.head[1]);
170 writel(-1, &msg->body[0]);
171 writel(0, &msg->body[1]);
172 osm_debug("Mounting...\n");
173
174 return i2o_msg_post_wait(dev->iop, m, 2);
175};
176
177/**
178 * i2o_block_device_lock - Locks the media of device dev
179 * @dev: I2O device which should receive the lock request
180 * @media_id: Media Identifier
181 *
182 * Lock media of device dev to prevent removal. The media identifier
183 * should be set to -1, because the spec does not support any other value.
184 *
185 * Returns 0 on success or negative error code on failure.
186 */
187static int i2o_block_device_lock(struct i2o_device *dev, u32 media_id)
188{
189 struct i2o_message __iomem *msg;
190 u32 m;
191
192 m = i2o_msg_get_wait(dev->iop, &msg, I2O_TIMEOUT_MESSAGE_GET);
193 if (m == I2O_QUEUE_EMPTY)
194 return -ETIMEDOUT;
195
196 writel(FIVE_WORD_MSG_SIZE | SGL_OFFSET_0, &msg->u.head[0]);
197 writel(I2O_CMD_BLOCK_MLOCK << 24 | HOST_TID << 12 | dev->lct_data.tid,
198 &msg->u.head[1]);
199 writel(-1, &msg->body[0]);
200 osm_debug("Locking...\n");
201
202 return i2o_msg_post_wait(dev->iop, m, 2);
203};
204
205/**
206 * i2o_block_device_unlock - Unlocks the media of device dev
207 * @dev: I2O device which should receive the unlocked request
208 * @media_id: Media Identifier
209 *
210 * Unlocks the media in device dev. The media identifier should be set to
211 * -1, because the spec does not support any other value.
212 *
213 * Returns 0 on success or negative error code on failure.
214 */
215static int i2o_block_device_unlock(struct i2o_device *dev, u32 media_id)
216{
217 struct i2o_message __iomem *msg;
218 u32 m;
219
220 m = i2o_msg_get_wait(dev->iop, &msg, I2O_TIMEOUT_MESSAGE_GET);
221 if (m == I2O_QUEUE_EMPTY)
222 return -ETIMEDOUT;
223
224 writel(FIVE_WORD_MSG_SIZE | SGL_OFFSET_0, &msg->u.head[0]);
225 writel(I2O_CMD_BLOCK_MUNLOCK << 24 | HOST_TID << 12 | dev->lct_data.tid,
226 &msg->u.head[1]);
227 writel(media_id, &msg->body[0]);
228 osm_debug("Unlocking...\n");
229
230 return i2o_msg_post_wait(dev->iop, m, 2);
231};
232
233/**
234 * i2o_block_device_power - Power management for device dev
235 * @dev: I2O device which should receive the power management request
236 * @operation: Operation which should be send
237 *
238 * Send a power management request to the device dev.
239 *
240 * Returns 0 on success or negative error code on failure.
241 */
242static int i2o_block_device_power(struct i2o_block_device *dev, u8 op)
243{
244 struct i2o_device *i2o_dev = dev->i2o_dev;
245 struct i2o_controller *c = i2o_dev->iop;
246 struct i2o_message __iomem *msg;
247 u32 m;
248 int rc;
249
250 m = i2o_msg_get_wait(c, &msg, I2O_TIMEOUT_MESSAGE_GET);
251 if (m == I2O_QUEUE_EMPTY)
252 return -ETIMEDOUT;
253
254 writel(FOUR_WORD_MSG_SIZE | SGL_OFFSET_0, &msg->u.head[0]);
255 writel(I2O_CMD_BLOCK_POWER << 24 | HOST_TID << 12 | i2o_dev->lct_data.
256 tid, &msg->u.head[1]);
257 writel(op << 24, &msg->body[0]);
258 osm_debug("Power...\n");
259
260 rc = i2o_msg_post_wait(c, m, 60);
261 if (!rc)
262 dev->power = op;
263
264 return rc;
265};
266
267/**
268 * i2o_block_request_alloc - Allocate an I2O block request struct
269 *
270 * Allocates an I2O block request struct and initialize the list.
271 *
272 * Returns a i2o_block_request pointer on success or negative error code
273 * on failure.
274 */
275static inline struct i2o_block_request *i2o_block_request_alloc(void)
276{
277 struct i2o_block_request *ireq;
278
279 ireq = mempool_alloc(i2o_blk_req_pool.pool, GFP_ATOMIC);
280 if (!ireq)
281 return ERR_PTR(-ENOMEM);
282
283 INIT_LIST_HEAD(&ireq->queue);
284
285 return ireq;
286};
287
288/**
289 * i2o_block_request_free - Frees a I2O block request
290 * @ireq: I2O block request which should be freed
291 *
292 * Fres the allocated memory (give it back to the request mempool).
293 */
294static inline void i2o_block_request_free(struct i2o_block_request *ireq)
295{
296 mempool_free(ireq, i2o_blk_req_pool.pool);
297};
298
299/**
300 * i2o_block_sglist_alloc - Allocate the SG list and map it
301 * @ireq: I2O block request
302 *
303 * Builds the SG list and map it into to be accessable by the controller.
304 *
305 * Returns the number of elements in the SG list or 0 on failure.
306 */
307static inline int i2o_block_sglist_alloc(struct i2o_block_request *ireq)
308{
309 struct device *dev = &ireq->i2o_blk_dev->i2o_dev->iop->pdev->dev;
310 int nents;
311
312 nents = blk_rq_map_sg(ireq->req->q, ireq->req, ireq->sg_table);
313
314 if (rq_data_dir(ireq->req) == READ)
315 ireq->sg_dma_direction = PCI_DMA_FROMDEVICE;
316 else
317 ireq->sg_dma_direction = PCI_DMA_TODEVICE;
318
319 ireq->sg_nents = dma_map_sg(dev, ireq->sg_table, nents,
320 ireq->sg_dma_direction);
321
322 return ireq->sg_nents;
323};
324
325/**
326 * i2o_block_sglist_free - Frees the SG list
327 * @ireq: I2O block request from which the SG should be freed
328 *
329 * Frees the SG list from the I2O block request.
330 */
331static inline void i2o_block_sglist_free(struct i2o_block_request *ireq)
332{
333 struct device *dev = &ireq->i2o_blk_dev->i2o_dev->iop->pdev->dev;
334
335 dma_unmap_sg(dev, ireq->sg_table, ireq->sg_nents,
336 ireq->sg_dma_direction);
337};
338
339/**
340 * i2o_block_prep_req_fn - Allocates I2O block device specific struct
341 * @q: request queue for the request
342 * @req: the request to prepare
343 *
344 * Allocate the necessary i2o_block_request struct and connect it to
345 * the request. This is needed that we not loose the SG list later on.
346 *
347 * Returns BLKPREP_OK on success or BLKPREP_DEFER on failure.
348 */
349static int i2o_block_prep_req_fn(struct request_queue *q, struct request *req)
350{
351 struct i2o_block_device *i2o_blk_dev = q->queuedata;
352 struct i2o_block_request *ireq;
353
354 /* request is already processed by us, so return */
355 if (req->flags & REQ_SPECIAL) {
356 osm_debug("REQ_SPECIAL already set!\n");
357 req->flags |= REQ_DONTPREP;
358 return BLKPREP_OK;
359 }
360
361 /* connect the i2o_block_request to the request */
362 if (!req->special) {
363 ireq = i2o_block_request_alloc();
364 if (unlikely(IS_ERR(ireq))) {
365 osm_debug("unable to allocate i2o_block_request!\n");
366 return BLKPREP_DEFER;
367 }
368
369 ireq->i2o_blk_dev = i2o_blk_dev;
370 req->special = ireq;
371 ireq->req = req;
372 } else
373 ireq = req->special;
374
375 /* do not come back here */
376 req->flags |= REQ_DONTPREP | REQ_SPECIAL;
377
378 return BLKPREP_OK;
379};
380
381/**
382 * i2o_block_delayed_request_fn - delayed request queue function
383 * delayed_request: the delayed request with the queue to start
384 *
385 * If the request queue is stopped for a disk, and there is no open
386 * request, a new event is created, which calls this function to start
387 * the queue after I2O_BLOCK_REQUEST_TIME. Otherwise the queue will never
388 * be started again.
389 */
390static void i2o_block_delayed_request_fn(void *delayed_request)
391{
392 struct i2o_block_delayed_request *dreq = delayed_request;
393 struct request_queue *q = dreq->queue;
394 unsigned long flags;
395
396 spin_lock_irqsave(q->queue_lock, flags);
397 blk_start_queue(q);
398 spin_unlock_irqrestore(q->queue_lock, flags);
399 kfree(dreq);
400};
401
402/**
403 * i2o_block_reply - Block OSM reply handler.
404 * @c: I2O controller from which the message arrives
405 * @m: message id of reply
406 * qmsg: the actuall I2O message reply
407 *
408 * This function gets all the message replies.
409 *
410 */
411static int i2o_block_reply(struct i2o_controller *c, u32 m,
412 struct i2o_message *msg)
413{
414 struct i2o_block_request *ireq;
415 struct request *req;
416 struct i2o_block_device *dev;
417 struct request_queue *q;
418 u8 st;
419 unsigned long flags;
420
421 /* FAILed message */
422 if (unlikely(le32_to_cpu(msg->u.head[0]) & (1 << 13))) {
423 struct i2o_message *pmsg;
424 u32 pm;
425
426 /*
427 * FAILed message from controller
428 * We increment the error count and abort it
429 *
430 * In theory this will never happen. The I2O block class
431 * specification states that block devices never return
432 * FAILs but instead use the REQ status field...but
433 * better be on the safe side since no one really follows
434 * the spec to the book :)
435 */
436 pm = le32_to_cpu(msg->body[3]);
437 pmsg = i2o_msg_in_to_virt(c, pm);
438
439 req = i2o_cntxt_list_get(c, le32_to_cpu(pmsg->u.s.tcntxt));
440 if (unlikely(!req)) {
441 osm_err("NULL reply received!\n");
442 return -1;
443 }
444
445 ireq = req->special;
446 dev = ireq->i2o_blk_dev;
447 q = dev->gd->queue;
448
449 req->errors++;
450
451 spin_lock_irqsave(q->queue_lock, flags);
452
453 while (end_that_request_chunk(req, !req->errors,
454 le32_to_cpu(pmsg->body[1]))) ;
455 end_that_request_last(req);
456
457 dev->open_queue_depth--;
458 list_del(&ireq->queue);
459 blk_start_queue(q);
460
461 spin_unlock_irqrestore(q->queue_lock, flags);
462
463 /* Now flush the message by making it a NOP */
464 i2o_msg_nop(c, pm);
465
466 return -1;
467 }
468
469 req = i2o_cntxt_list_get(c, le32_to_cpu(msg->u.s.tcntxt));
470 if (unlikely(!req)) {
471 osm_err("NULL reply received!\n");
472 return -1;
473 }
474
475 ireq = req->special;
476 dev = ireq->i2o_blk_dev;
477 q = dev->gd->queue;
478
479 if (unlikely(!dev->i2o_dev)) {
480 /*
481 * This is HACK, but Intel Integrated RAID allows user
482 * to delete a volume that is claimed, locked, and in use
483 * by the OS. We have to check for a reply from a
484 * non-existent device and flag it as an error or the system
485 * goes kaput...
486 */
487 req->errors++;
488 osm_warn("Data transfer to deleted device!\n");
489 spin_lock_irqsave(q->queue_lock, flags);
490 while (end_that_request_chunk
491 (req, !req->errors, le32_to_cpu(msg->body[1]))) ;
492 end_that_request_last(req);
493
494 dev->open_queue_depth--;
495 list_del(&ireq->queue);
496 blk_start_queue(q);
497
498 spin_unlock_irqrestore(q->queue_lock, flags);
499 return -1;
500 }
501
502 /*
503 * Lets see what is cooking. We stuffed the
504 * request in the context.
505 */
506
507 st = le32_to_cpu(msg->body[0]) >> 24;
508
509 if (st != 0) {
510 int err;
511 char *bsa_errors[] = {
512 "Success",
513 "Media Error",
514 "Failure communicating to device",
515 "Device Failure",
516 "Device is not ready",
517 "Media not present",
518 "Media is locked by another user",
519 "Media has failed",
520 "Failure communicating to device",
521 "Device bus failure",
522 "Device is locked by another user",
523 "Device is write protected",
524 "Device has reset",
525 "Volume has changed, waiting for acknowledgement"
526 };
527
528 err = le32_to_cpu(msg->body[0]) & 0xffff;
529
530 /*
531 * Device not ready means two things. One is that the
532 * the thing went offline (but not a removal media)
533 *
534 * The second is that you have a SuperTrak 100 and the
535 * firmware got constipated. Unlike standard i2o card
536 * setups the supertrak returns an error rather than
537 * blocking for the timeout in these cases.
538 *
539 * Don't stick a supertrak100 into cache aggressive modes
540 */
541
542 osm_err("block-osm: /dev/%s error: %s", dev->gd->disk_name,
543 bsa_errors[le32_to_cpu(msg->body[0]) & 0xffff]);
544 if (le32_to_cpu(msg->body[0]) & 0x00ff0000)
545 printk(KERN_ERR " - DDM attempted %d retries",
546 (le32_to_cpu(msg->body[0]) >> 16) & 0x00ff);
547 printk(KERN_ERR ".\n");
548 req->errors++;
549 } else
550 req->errors = 0;
551
552 if (!end_that_request_chunk
553 (req, !req->errors, le32_to_cpu(msg->body[1]))) {
554 add_disk_randomness(req->rq_disk);
555 spin_lock_irqsave(q->queue_lock, flags);
556
557 end_that_request_last(req);
558
559 dev->open_queue_depth--;
560 list_del(&ireq->queue);
561 blk_start_queue(q);
562
563 spin_unlock_irqrestore(q->queue_lock, flags);
564
565 i2o_block_sglist_free(ireq);
566 i2o_block_request_free(ireq);
567 } else
568 osm_err("still remaining chunks\n");
569
570 return 1;
571};
572
573static void i2o_block_event(struct i2o_event *evt)
574{
575 osm_info("block-osm: event received\n");
576};
577
578/*
579 * SCSI-CAM for ioctl geometry mapping
580 * Duplicated with SCSI - this should be moved into somewhere common
581 * perhaps genhd ?
582 *
583 * LBA -> CHS mapping table taken from:
584 *
585 * "Incorporating the I2O Architecture into BIOS for Intel Architecture
586 * Platforms"
587 *
588 * This is an I2O document that is only available to I2O members,
589 * not developers.
590 *
591 * From my understanding, this is how all the I2O cards do this
592 *
593 * Disk Size | Sectors | Heads | Cylinders
594 * ---------------+---------+-------+-------------------
595 * 1 < X <= 528M | 63 | 16 | X/(63 * 16 * 512)
596 * 528M < X <= 1G | 63 | 32 | X/(63 * 32 * 512)
597 * 1 < X <528M | 63 | 16 | X/(63 * 16 * 512)
598 * 1 < X <528M | 63 | 16 | X/(63 * 16 * 512)
599 *
600 */
601#define BLOCK_SIZE_528M 1081344
602#define BLOCK_SIZE_1G 2097152
603#define BLOCK_SIZE_21G 4403200
604#define BLOCK_SIZE_42G 8806400
605#define BLOCK_SIZE_84G 17612800
606
607static void i2o_block_biosparam(unsigned long capacity, unsigned short *cyls,
608 unsigned char *hds, unsigned char *secs)
609{
610 unsigned long heads, sectors, cylinders;
611
612 sectors = 63L; /* Maximize sectors per track */
613 if (capacity <= BLOCK_SIZE_528M)
614 heads = 16;
615 else if (capacity <= BLOCK_SIZE_1G)
616 heads = 32;
617 else if (capacity <= BLOCK_SIZE_21G)
618 heads = 64;
619 else if (capacity <= BLOCK_SIZE_42G)
620 heads = 128;
621 else
622 heads = 255;
623
624 cylinders = (unsigned long)capacity / (heads * sectors);
625
626 *cyls = (unsigned short)cylinders; /* Stuff return values */
627 *secs = (unsigned char)sectors;
628 *hds = (unsigned char)heads;
629}
630
631/**
632 * i2o_block_open - Open the block device
633 *
634 * Power up the device, mount and lock the media. This function is called,
635 * if the block device is opened for access.
636 *
637 * Returns 0 on success or negative error code on failure.
638 */
639static int i2o_block_open(struct inode *inode, struct file *file)
640{
641 struct i2o_block_device *dev = inode->i_bdev->bd_disk->private_data;
642
643 if (!dev->i2o_dev)
644 return -ENODEV;
645
646 if (dev->power > 0x1f)
647 i2o_block_device_power(dev, 0x02);
648
649 i2o_block_device_mount(dev->i2o_dev, -1);
650
651 i2o_block_device_lock(dev->i2o_dev, -1);
652
653 osm_debug("Ready.\n");
654
655 return 0;
656};
657
658/**
659 * i2o_block_release - Release the I2O block device
660 *
661 * Unlock and unmount the media, and power down the device. Gets called if
662 * the block device is closed.
663 *
664 * Returns 0 on success or negative error code on failure.
665 */
666static int i2o_block_release(struct inode *inode, struct file *file)
667{
668 struct gendisk *disk = inode->i_bdev->bd_disk;
669 struct i2o_block_device *dev = disk->private_data;
670 u8 operation;
671
672 /*
673 * This is to deail with the case of an application
674 * opening a device and then the device dissapears while
675 * it's in use, and then the application tries to release
676 * it. ex: Unmounting a deleted RAID volume at reboot.
677 * If we send messages, it will just cause FAILs since
678 * the TID no longer exists.
679 */
680 if (!dev->i2o_dev)
681 return 0;
682
683 i2o_block_device_flush(dev->i2o_dev);
684
685 i2o_block_device_unlock(dev->i2o_dev, -1);
686
687 if (dev->flags & (1 << 3 | 1 << 4)) /* Removable */
688 operation = 0x21;
689 else
690 operation = 0x24;
691
692 i2o_block_device_power(dev, operation);
693
694 return 0;
695}
696
697/**
698 * i2o_block_ioctl - Issue device specific ioctl calls.
699 * @cmd: ioctl command
700 * @arg: arg
701 *
702 * Handles ioctl request for the block device.
703 *
704 * Return 0 on success or negative error on failure.
705 */
706static int i2o_block_ioctl(struct inode *inode, struct file *file,
707 unsigned int cmd, unsigned long arg)
708{
709 struct gendisk *disk = inode->i_bdev->bd_disk;
710 struct i2o_block_device *dev = disk->private_data;
711 void __user *argp = (void __user *)arg;
712
713 /* Anyone capable of this syscall can do *real bad* things */
714
715 if (!capable(CAP_SYS_ADMIN))
716 return -EPERM;
717
718 switch (cmd) {
719 case HDIO_GETGEO:
720 {
721 struct hd_geometry g;
722 i2o_block_biosparam(get_capacity(disk),
723 &g.cylinders, &g.heads, &g.sectors);
724 g.start = get_start_sect(inode->i_bdev);
725 return copy_to_user(argp, &g, sizeof(g)) ? -EFAULT : 0;
726 }
727
728 case BLKI2OGRSTRAT:
729 return put_user(dev->rcache, (int __user *)arg);
730 case BLKI2OGWSTRAT:
731 return put_user(dev->wcache, (int __user *)arg);
732 case BLKI2OSRSTRAT:
733 if (arg < 0 || arg > CACHE_SMARTFETCH)
734 return -EINVAL;
735 dev->rcache = arg;
736 break;
737 case BLKI2OSWSTRAT:
738 if (arg != 0
739 && (arg < CACHE_WRITETHROUGH || arg > CACHE_SMARTBACK))
740 return -EINVAL;
741 dev->wcache = arg;
742 break;
743 }
744 return -ENOTTY;
745};
746
747/**
748 * i2o_block_media_changed - Have we seen a media change?
749 * @disk: gendisk which should be verified
750 *
751 * Verifies if the media has changed.
752 *
753 * Returns 1 if the media was changed or 0 otherwise.
754 */
755static int i2o_block_media_changed(struct gendisk *disk)
756{
757 struct i2o_block_device *p = disk->private_data;
758
759 if (p->media_change_flag) {
760 p->media_change_flag = 0;
761 return 1;
762 }
763 return 0;
764}
765
766/**
767 * i2o_block_transfer - Transfer a request to/from the I2O controller
768 * @req: the request which should be transfered
769 *
770 * This function converts the request into a I2O message. The necessary
771 * DMA buffers are allocated and after everything is setup post the message
772 * to the I2O controller. No cleanup is done by this function. It is done
773 * on the interrupt side when the reply arrives.
774 *
775 * Return 0 on success or negative error code on failure.
776 */
777static int i2o_block_transfer(struct request *req)
778{
779 struct i2o_block_device *dev = req->rq_disk->private_data;
780 struct i2o_controller *c = dev->i2o_dev->iop;
781 int tid = dev->i2o_dev->lct_data.tid;
782 struct i2o_message __iomem *msg;
783 void __iomem *mptr;
784 struct i2o_block_request *ireq = req->special;
785 struct scatterlist *sg;
786 int sgnum;
787 int i;
788 u32 m;
789 u32 tcntxt;
790 u32 sg_flags;
791 int rc;
792
793 m = i2o_msg_get(c, &msg);
794 if (m == I2O_QUEUE_EMPTY) {
795 rc = -EBUSY;
796 goto exit;
797 }
798
799 tcntxt = i2o_cntxt_list_add(c, req);
800 if (!tcntxt) {
801 rc = -ENOMEM;
802 goto nop_msg;
803 }
804
805 if ((sgnum = i2o_block_sglist_alloc(ireq)) <= 0) {
806 rc = -ENOMEM;
807 goto context_remove;
808 }
809
810 /* Build the message based on the request. */
811 writel(i2o_block_driver.context, &msg->u.s.icntxt);
812 writel(tcntxt, &msg->u.s.tcntxt);
813 writel(req->nr_sectors << 9, &msg->body[1]);
814
815 writel((((u64) req->sector) << 9) & 0xffffffff, &msg->body[2]);
816 writel(req->sector >> 23, &msg->body[3]);
817
818 mptr = &msg->body[4];
819
820 sg = ireq->sg_table;
821
822 if (rq_data_dir(req) == READ) {
823 writel(I2O_CMD_BLOCK_READ << 24 | HOST_TID << 12 | tid,
824 &msg->u.head[1]);
825 sg_flags = 0x10000000;
826 switch (dev->rcache) {
827 case CACHE_NULL:
828 writel(0, &msg->body[0]);
829 break;
830 case CACHE_PREFETCH:
831 writel(0x201F0008, &msg->body[0]);
832 break;
833 case CACHE_SMARTFETCH:
834 if (req->nr_sectors > 16)
835 writel(0x201F0008, &msg->body[0]);
836 else
837 writel(0x001F0000, &msg->body[0]);
838 break;
839 }
840 } else {
841 writel(I2O_CMD_BLOCK_WRITE << 24 | HOST_TID << 12 | tid,
842 &msg->u.head[1]);
843 sg_flags = 0x14000000;
844 switch (dev->wcache) {
845 case CACHE_NULL:
846 writel(0, &msg->body[0]);
847 break;
848 case CACHE_WRITETHROUGH:
849 writel(0x001F0008, &msg->body[0]);
850 break;
851 case CACHE_WRITEBACK:
852 writel(0x001F0010, &msg->body[0]);
853 break;
854 case CACHE_SMARTBACK:
855 if (req->nr_sectors > 16)
856 writel(0x001F0004, &msg->body[0]);
857 else
858 writel(0x001F0010, &msg->body[0]);
859 break;
860 case CACHE_SMARTTHROUGH:
861 if (req->nr_sectors > 16)
862 writel(0x001F0004, &msg->body[0]);
863 else
864 writel(0x001F0010, &msg->body[0]);
865 }
866 }
867
868 for (i = sgnum; i > 0; i--) {
869 if (i == 1)
870 sg_flags |= 0x80000000;
871 writel(sg_flags | sg_dma_len(sg), mptr);
872 writel(sg_dma_address(sg), mptr + 4);
873 mptr += 8;
874 sg++;
875 }
876
877 writel(I2O_MESSAGE_SIZE
878 (((unsigned long)mptr -
879 (unsigned long)&msg->u.head[0]) >> 2) | SGL_OFFSET_8,
880 &msg->u.head[0]);
881
882 list_add_tail(&ireq->queue, &dev->open_queue);
883 dev->open_queue_depth++;
884
885 i2o_msg_post(c, m);
886
887 return 0;
888
889 context_remove:
890 i2o_cntxt_list_remove(c, req);
891
892 nop_msg:
893 i2o_msg_nop(c, m);
894
895 exit:
896 return rc;
897};
898
899/**
900 * i2o_block_request_fn - request queue handling function
901 * q: request queue from which the request could be fetched
902 *
903 * Takes the next request from the queue, transfers it and if no error
904 * occurs dequeue it from the queue. On arrival of the reply the message
905 * will be processed further. If an error occurs requeue the request.
906 */
907static void i2o_block_request_fn(struct request_queue *q)
908{
909 struct request *req;
910
911 while (!blk_queue_plugged(q)) {
912 req = elv_next_request(q);
913 if (!req)
914 break;
915
916 if (blk_fs_request(req)) {
917 struct i2o_block_delayed_request *dreq;
918 struct i2o_block_request *ireq = req->special;
919 unsigned int queue_depth;
920
921 queue_depth = ireq->i2o_blk_dev->open_queue_depth;
922
923 if (queue_depth < I2O_BLOCK_MAX_OPEN_REQUESTS)
924 if (!i2o_block_transfer(req)) {
925 blkdev_dequeue_request(req);
926 continue;
927 }
928
929 if (queue_depth)
930 break;
931
932 /* stop the queue and retry later */
933 dreq = kmalloc(sizeof(*dreq), GFP_ATOMIC);
934 if (!dreq)
935 continue;
936
937 dreq->queue = q;
938 INIT_WORK(&dreq->work, i2o_block_delayed_request_fn,
939 dreq);
940
941 osm_info("transfer error\n");
942 if (!queue_delayed_work(i2o_block_driver.event_queue,
943 &dreq->work,
944 I2O_BLOCK_RETRY_TIME))
945 kfree(dreq);
946 else {
947 blk_stop_queue(q);
948 break;
949 }
950 } else
951 end_request(req, 0);
952 }
953};
954
955/* I2O Block device operations definition */
956static struct block_device_operations i2o_block_fops = {
957 .owner = THIS_MODULE,
958 .open = i2o_block_open,
959 .release = i2o_block_release,
960 .ioctl = i2o_block_ioctl,
961 .media_changed = i2o_block_media_changed
962};
963
964/**
965 * i2o_block_device_alloc - Allocate memory for a I2O Block device
966 *
967 * Allocate memory for the i2o_block_device struct, gendisk and request
968 * queue and initialize them as far as no additional information is needed.
969 *
970 * Returns a pointer to the allocated I2O Block device on succes or a
971 * negative error code on failure.
972 */
973static struct i2o_block_device *i2o_block_device_alloc(void)
974{
975 struct i2o_block_device *dev;
976 struct gendisk *gd;
977 struct request_queue *queue;
978 int rc;
979
980 dev = kmalloc(sizeof(*dev), GFP_KERNEL);
981 if (!dev) {
982 osm_err("Insufficient memory to allocate I2O Block disk.\n");
983 rc = -ENOMEM;
984 goto exit;
985 }
986 memset(dev, 0, sizeof(*dev));
987
988 INIT_LIST_HEAD(&dev->open_queue);
989 spin_lock_init(&dev->lock);
990 dev->rcache = CACHE_PREFETCH;
991 dev->wcache = CACHE_WRITEBACK;
992
993 /* allocate a gendisk with 16 partitions */
994 gd = alloc_disk(16);
995 if (!gd) {
996 osm_err("Insufficient memory to allocate gendisk.\n");
997 rc = -ENOMEM;
998 goto cleanup_dev;
999 }
1000
1001 /* initialize the request queue */
1002 queue = blk_init_queue(i2o_block_request_fn, &dev->lock);
1003 if (!queue) {
1004 osm_err("Insufficient memory to allocate request queue.\n");
1005 rc = -ENOMEM;
1006 goto cleanup_queue;
1007 }
1008
1009 blk_queue_prep_rq(queue, i2o_block_prep_req_fn);
1010
1011 gd->major = I2O_MAJOR;
1012 gd->queue = queue;
1013 gd->fops = &i2o_block_fops;
1014 gd->private_data = dev;
1015
1016 dev->gd = gd;
1017
1018 return dev;
1019
1020 cleanup_queue:
1021 put_disk(gd);
1022
1023 cleanup_dev:
1024 kfree(dev);
1025
1026 exit:
1027 return ERR_PTR(rc);
1028};
1029
1030/**
1031 * i2o_block_probe - verify if dev is a I2O Block device and install it
1032 * @dev: device to verify if it is a I2O Block device
1033 *
1034 * We only verify if the user_tid of the device is 0xfff and then install
1035 * the device. Otherwise it is used by some other device (e. g. RAID).
1036 *
1037 * Returns 0 on success or negative error code on failure.
1038 */
1039static int i2o_block_probe(struct device *dev)
1040{
1041 struct i2o_device *i2o_dev = to_i2o_device(dev);
1042 struct i2o_block_device *i2o_blk_dev;
1043 struct i2o_controller *c = i2o_dev->iop;
1044 struct gendisk *gd;
1045 struct request_queue *queue;
1046 static int unit = 0;
1047 int rc;
1048 u64 size;
1049 u32 blocksize;
1050 u16 power;
1051 u32 flags, status;
1052 int segments;
1053
1054 /* skip devices which are used by IOP */
1055 if (i2o_dev->lct_data.user_tid != 0xfff) {
1056 osm_debug("skipping used device %03x\n", i2o_dev->lct_data.tid);
1057 return -ENODEV;
1058 }
1059
1060 osm_info("New device detected (TID: %03x)\n", i2o_dev->lct_data.tid);
1061
1062 if (i2o_device_claim(i2o_dev)) {
1063 osm_warn("Unable to claim device. Installation aborted\n");
1064 rc = -EFAULT;
1065 goto exit;
1066 }
1067
1068 i2o_blk_dev = i2o_block_device_alloc();
1069 if (IS_ERR(i2o_blk_dev)) {
1070 osm_err("could not alloc a new I2O block device");
1071 rc = PTR_ERR(i2o_blk_dev);
1072 goto claim_release;
1073 }
1074
1075 i2o_blk_dev->i2o_dev = i2o_dev;
1076 dev_set_drvdata(dev, i2o_blk_dev);
1077
1078 /* setup gendisk */
1079 gd = i2o_blk_dev->gd;
1080 gd->first_minor = unit << 4;
1081 sprintf(gd->disk_name, "i2o/hd%c", 'a' + unit);
1082 sprintf(gd->devfs_name, "i2o/hd%c", 'a' + unit);
1083 gd->driverfs_dev = &i2o_dev->device;
1084
1085 /* setup request queue */
1086 queue = gd->queue;
1087 queue->queuedata = i2o_blk_dev;
1088
1089 blk_queue_max_phys_segments(queue, I2O_MAX_SEGMENTS);
1090 blk_queue_max_sectors(queue, I2O_MAX_SECTORS);
1091
1092 if (c->short_req)
1093 segments = 8;
1094 else {
1095 i2o_status_block *sb;
1096
1097 sb = c->status_block.virt;
1098
1099 segments = (sb->inbound_frame_size -
1100 sizeof(struct i2o_message) / 4 - 4) / 2;
1101 }
1102
1103 blk_queue_max_hw_segments(queue, segments);
1104
1105 osm_debug("max sectors = %d\n", I2O_MAX_SECTORS);
1106 osm_debug("phys segments = %d\n", I2O_MAX_SEGMENTS);
1107 osm_debug("hw segments = %d\n", segments);
1108
1109 /*
1110 * Ask for the current media data. If that isn't supported
1111 * then we ask for the device capacity data
1112 */
1113 if (i2o_parm_field_get(i2o_dev, 0x0004, 1, &blocksize, 4) != 0
1114 || i2o_parm_field_get(i2o_dev, 0x0004, 0, &size, 8) != 0) {
1115 i2o_parm_field_get(i2o_dev, 0x0000, 3, &blocksize, 4);
1116 i2o_parm_field_get(i2o_dev, 0x0000, 4, &size, 8);
1117 }
1118 osm_debug("blocksize = %d\n", blocksize);
1119
1120 if (i2o_parm_field_get(i2o_dev, 0x0000, 2, &power, 2))
1121 power = 0;
1122 i2o_parm_field_get(i2o_dev, 0x0000, 5, &flags, 4);
1123 i2o_parm_field_get(i2o_dev, 0x0000, 6, &status, 4);
1124
1125 set_capacity(gd, size >> 9);
1126
1127 i2o_event_register(i2o_dev, &i2o_block_driver, 0, 0xffffffff);
1128
1129 add_disk(gd);
1130
1131 unit++;
1132
1133 return 0;
1134
1135 claim_release:
1136 i2o_device_claim_release(i2o_dev);
1137
1138 exit:
1139 return rc;
1140};
1141
1142/* Block OSM driver struct */
1143static struct i2o_driver i2o_block_driver = {
1144 .name = OSM_NAME,
1145 .event = i2o_block_event,
1146 .reply = i2o_block_reply,
1147 .classes = i2o_block_class_id,
1148 .driver = {
1149 .probe = i2o_block_probe,
1150 .remove = i2o_block_remove,
1151 },
1152};
1153
1154/**
1155 * i2o_block_init - Block OSM initialization function
1156 *
1157 * Allocate the slab and mempool for request structs, registers i2o_block
1158 * block device and finally register the Block OSM in the I2O core.
1159 *
1160 * Returns 0 on success or negative error code on failure.
1161 */
1162static int __init i2o_block_init(void)
1163{
1164 int rc;
1165 int size;
1166
1167 printk(KERN_INFO OSM_DESCRIPTION " v" OSM_VERSION "\n");
1168
1169 /* Allocate request mempool and slab */
1170 size = sizeof(struct i2o_block_request);
1171 i2o_blk_req_pool.slab = kmem_cache_create("i2o_block_req", size, 0,
1172 SLAB_HWCACHE_ALIGN, NULL,
1173 NULL);
1174 if (!i2o_blk_req_pool.slab) {
1175 osm_err("can't init request slab\n");
1176 rc = -ENOMEM;
1177 goto exit;
1178 }
1179
1180 i2o_blk_req_pool.pool = mempool_create(I2O_REQ_MEMPOOL_SIZE,
1181 mempool_alloc_slab,
1182 mempool_free_slab,
1183 i2o_blk_req_pool.slab);
1184 if (!i2o_blk_req_pool.pool) {
1185 osm_err("can't init request mempool\n");
1186 rc = -ENOMEM;
1187 goto free_slab;
1188 }
1189
1190 /* Register the block device interfaces */
1191 rc = register_blkdev(I2O_MAJOR, "i2o_block");
1192 if (rc) {
1193 osm_err("unable to register block device\n");
1194 goto free_mempool;
1195 }
1196#ifdef MODULE
1197 osm_info("registered device at major %d\n", I2O_MAJOR);
1198#endif
1199
1200 /* Register Block OSM into I2O core */
1201 rc = i2o_driver_register(&i2o_block_driver);
1202 if (rc) {
1203 osm_err("Could not register Block driver\n");
1204 goto unregister_blkdev;
1205 }
1206
1207 return 0;
1208
1209 unregister_blkdev:
1210 unregister_blkdev(I2O_MAJOR, "i2o_block");
1211
1212 free_mempool:
1213 mempool_destroy(i2o_blk_req_pool.pool);
1214
1215 free_slab:
1216 kmem_cache_destroy(i2o_blk_req_pool.slab);
1217
1218 exit:
1219 return rc;
1220};
1221
1222/**
1223 * i2o_block_exit - Block OSM exit function
1224 *
1225 * Unregisters Block OSM from I2O core, unregisters i2o_block block device
1226 * and frees the mempool and slab.
1227 */
1228static void __exit i2o_block_exit(void)
1229{
1230 /* Unregister I2O Block OSM from I2O core */
1231 i2o_driver_unregister(&i2o_block_driver);
1232
1233 /* Unregister block device */
1234 unregister_blkdev(I2O_MAJOR, "i2o_block");
1235
1236 /* Free request mempool and slab */
1237 mempool_destroy(i2o_blk_req_pool.pool);
1238 kmem_cache_destroy(i2o_blk_req_pool.slab);
1239};
1240
1241MODULE_AUTHOR("Red Hat");
1242MODULE_LICENSE("GPL");
1243MODULE_DESCRIPTION(OSM_DESCRIPTION);
1244MODULE_VERSION(OSM_VERSION);
1245
1246module_init(i2o_block_init);
1247module_exit(i2o_block_exit);
diff --git a/drivers/message/i2o/i2o_block.h b/drivers/message/i2o/i2o_block.h
new file mode 100644
index 000000000000..ddd9a15679c0
--- /dev/null
+++ b/drivers/message/i2o/i2o_block.h
@@ -0,0 +1,99 @@
1/*
2 * Block OSM structures/API
3 *
4 * Copyright (C) 1999-2002 Red Hat Software
5 *
6 * Written by Alan Cox, Building Number Three Ltd
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the
10 * Free Software Foundation; either version 2 of the License, or (at your
11 * option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful, but
14 * WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * General Public License for more details.
17 *
18 * For the purpose of avoiding doubt the preferred form of the work
19 * for making modifications shall be a standards compliant form such
20 * gzipped tar and not one requiring a proprietary or patent encumbered
21 * tool to unpack.
22 *
23 * Fixes/additions:
24 * Steve Ralston:
25 * Multiple device handling error fixes,
26 * Added a queue depth.
27 * Alan Cox:
28 * FC920 has an rmw bug. Dont or in the end marker.
29 * Removed queue walk, fixed for 64bitness.
30 * Rewrote much of the code over time
31 * Added indirect block lists
32 * Handle 64K limits on many controllers
33 * Don't use indirects on the Promise (breaks)
34 * Heavily chop down the queue depths
35 * Deepak Saxena:
36 * Independent queues per IOP
37 * Support for dynamic device creation/deletion
38 * Code cleanup
39 * Support for larger I/Os through merge* functions
40 * (taken from DAC960 driver)
41 * Boji T Kannanthanam:
42 * Set the I2O Block devices to be detected in increasing
43 * order of TIDs during boot.
44 * Search and set the I2O block device that we boot off
45 * from as the first device to be claimed (as /dev/i2o/hda)
46 * Properly attach/detach I2O gendisk structure from the
47 * system gendisk list. The I2O block devices now appear in
48 * /proc/partitions.
49 * Markus Lidel <Markus.Lidel@shadowconnect.com>:
50 * Minor bugfixes for 2.6.
51 */
52
53#ifndef I2O_BLOCK_OSM_H
54#define I2O_BLOCK_OSM_H
55
56#define I2O_BLOCK_RETRY_TIME HZ/4
57#define I2O_BLOCK_MAX_OPEN_REQUESTS 50
58
59/* I2O Block OSM mempool struct */
60struct i2o_block_mempool {
61 kmem_cache_t *slab;
62 mempool_t *pool;
63};
64
65/* I2O Block device descriptor */
66struct i2o_block_device {
67 struct i2o_device *i2o_dev; /* pointer to I2O device */
68 struct gendisk *gd;
69 spinlock_t lock; /* queue lock */
70 struct list_head open_queue; /* list of transfered, but unfinished
71 requests */
72 unsigned int open_queue_depth; /* number of requests in the queue */
73
74 int rcache; /* read cache flags */
75 int wcache; /* write cache flags */
76 int flags;
77 int power; /* power state */
78 int media_change_flag; /* media changed flag */
79};
80
81/* I2O Block device request */
82struct i2o_block_request
83{
84 struct list_head queue;
85 struct request *req; /* corresponding request */
86 struct i2o_block_device *i2o_blk_dev; /* I2O block device */
87 int sg_dma_direction; /* direction of DMA buffer read/write */
88 int sg_nents; /* number of SG elements */
89 struct scatterlist sg_table[I2O_MAX_SEGMENTS]; /* SG table */
90};
91
92/* I2O Block device delayed request */
93struct i2o_block_delayed_request
94{
95 struct work_struct work;
96 struct request_queue *queue;
97};
98
99#endif
diff --git a/drivers/message/i2o/i2o_config.c b/drivers/message/i2o/i2o_config.c
new file mode 100644
index 000000000000..5fc5004ea07a
--- /dev/null
+++ b/drivers/message/i2o/i2o_config.c
@@ -0,0 +1,1160 @@
1/*
2 * I2O Configuration Interface Driver
3 *
4 * (C) Copyright 1999-2002 Red Hat
5 *
6 * Written by Alan Cox, Building Number Three Ltd
7 *
8 * Fixes/additions:
9 * Deepak Saxena (04/20/1999):
10 * Added basic ioctl() support
11 * Deepak Saxena (06/07/1999):
12 * Added software download ioctl (still testing)
13 * Auvo Häkkinen (09/10/1999):
14 * Changes to i2o_cfg_reply(), ioctl_parms()
15 * Added ioct_validate()
16 * Taneli Vähäkangas (09/30/1999):
17 * Fixed ioctl_swdl()
18 * Taneli Vähäkangas (10/04/1999):
19 * Changed ioctl_swdl(), implemented ioctl_swul() and ioctl_swdel()
20 * Deepak Saxena (11/18/1999):
21 * Added event managmenet support
22 * Alan Cox <alan@redhat.com>:
23 * 2.4 rewrite ported to 2.5
24 * Markus Lidel <Markus.Lidel@shadowconnect.com>:
25 * Added pass-thru support for Adaptec's raidutils
26 *
27 * This program is free software; you can redistribute it and/or
28 * modify it under the terms of the GNU General Public License
29 * as published by the Free Software Foundation; either version
30 * 2 of the License, or (at your option) any later version.
31 */
32
33#include <linux/module.h>
34#include <linux/kernel.h>
35#include <linux/pci.h>
36#include <linux/i2o.h>
37#include <linux/errno.h>
38#include <linux/init.h>
39#include <linux/slab.h>
40#include <linux/miscdevice.h>
41#include <linux/mm.h>
42#include <linux/spinlock.h>
43#include <linux/smp_lock.h>
44#include <linux/ioctl32.h>
45#include <linux/compat.h>
46#include <linux/syscalls.h>
47
48#include <asm/uaccess.h>
49#include <asm/io.h>
50
51#define OSM_NAME "config-osm"
52#define OSM_VERSION "$Rev$"
53#define OSM_DESCRIPTION "I2O Configuration OSM"
54
55extern int i2o_parm_issue(struct i2o_device *, int, void *, int, void *, int);
56
57static spinlock_t i2o_config_lock;
58
59#define MODINC(x,y) ((x) = ((x) + 1) % (y))
60
61struct sg_simple_element {
62 u32 flag_count;
63 u32 addr_bus;
64};
65
66struct i2o_cfg_info {
67 struct file *fp;
68 struct fasync_struct *fasync;
69 struct i2o_evt_info event_q[I2O_EVT_Q_LEN];
70 u16 q_in; // Queue head index
71 u16 q_out; // Queue tail index
72 u16 q_len; // Queue length
73 u16 q_lost; // Number of lost events
74 ulong q_id; // Event queue ID...used as tx_context
75 struct i2o_cfg_info *next;
76};
77static struct i2o_cfg_info *open_files = NULL;
78static ulong i2o_cfg_info_id = 0;
79
80/*
81 * Each of these describes an i2o message handler. They are
82 * multiplexed by the i2o_core code
83 */
84
85static struct i2o_driver i2o_config_driver = {
86 .name = OSM_NAME
87};
88
89static int i2o_cfg_getiops(unsigned long arg)
90{
91 struct i2o_controller *c;
92 u8 __user *user_iop_table = (void __user *)arg;
93 u8 tmp[MAX_I2O_CONTROLLERS];
94 int ret = 0;
95
96 memset(tmp, 0, MAX_I2O_CONTROLLERS);
97
98 list_for_each_entry(c, &i2o_controllers, list)
99 tmp[c->unit] = 1;
100
101 if (copy_to_user(user_iop_table, tmp, MAX_I2O_CONTROLLERS))
102 ret = -EFAULT;
103
104 return ret;
105};
106
107static int i2o_cfg_gethrt(unsigned long arg)
108{
109 struct i2o_controller *c;
110 struct i2o_cmd_hrtlct __user *cmd = (struct i2o_cmd_hrtlct __user *)arg;
111 struct i2o_cmd_hrtlct kcmd;
112 i2o_hrt *hrt;
113 int len;
114 u32 reslen;
115 int ret = 0;
116
117 if (copy_from_user(&kcmd, cmd, sizeof(struct i2o_cmd_hrtlct)))
118 return -EFAULT;
119
120 if (get_user(reslen, kcmd.reslen) < 0)
121 return -EFAULT;
122
123 if (kcmd.resbuf == NULL)
124 return -EFAULT;
125
126 c = i2o_find_iop(kcmd.iop);
127 if (!c)
128 return -ENXIO;
129
130 hrt = (i2o_hrt *) c->hrt.virt;
131
132 len = 8 + ((hrt->entry_len * hrt->num_entries) << 2);
133
134 /* We did a get user...so assuming mem is ok...is this bad? */
135 put_user(len, kcmd.reslen);
136 if (len > reslen)
137 ret = -ENOBUFS;
138 if (copy_to_user(kcmd.resbuf, (void *)hrt, len))
139 ret = -EFAULT;
140
141 return ret;
142};
143
144static int i2o_cfg_getlct(unsigned long arg)
145{
146 struct i2o_controller *c;
147 struct i2o_cmd_hrtlct __user *cmd = (struct i2o_cmd_hrtlct __user *)arg;
148 struct i2o_cmd_hrtlct kcmd;
149 i2o_lct *lct;
150 int len;
151 int ret = 0;
152 u32 reslen;
153
154 if (copy_from_user(&kcmd, cmd, sizeof(struct i2o_cmd_hrtlct)))
155 return -EFAULT;
156
157 if (get_user(reslen, kcmd.reslen) < 0)
158 return -EFAULT;
159
160 if (kcmd.resbuf == NULL)
161 return -EFAULT;
162
163 c = i2o_find_iop(kcmd.iop);
164 if (!c)
165 return -ENXIO;
166
167 lct = (i2o_lct *) c->lct;
168
169 len = (unsigned int)lct->table_size << 2;
170 put_user(len, kcmd.reslen);
171 if (len > reslen)
172 ret = -ENOBUFS;
173 else if (copy_to_user(kcmd.resbuf, lct, len))
174 ret = -EFAULT;
175
176 return ret;
177};
178
179static int i2o_cfg_parms(unsigned long arg, unsigned int type)
180{
181 int ret = 0;
182 struct i2o_controller *c;
183 struct i2o_device *dev;
184 struct i2o_cmd_psetget __user *cmd =
185 (struct i2o_cmd_psetget __user *)arg;
186 struct i2o_cmd_psetget kcmd;
187 u32 reslen;
188 u8 *ops;
189 u8 *res;
190 int len = 0;
191
192 u32 i2o_cmd = (type == I2OPARMGET ?
193 I2O_CMD_UTIL_PARAMS_GET : I2O_CMD_UTIL_PARAMS_SET);
194
195 if (copy_from_user(&kcmd, cmd, sizeof(struct i2o_cmd_psetget)))
196 return -EFAULT;
197
198 if (get_user(reslen, kcmd.reslen))
199 return -EFAULT;
200
201 c = i2o_find_iop(kcmd.iop);
202 if (!c)
203 return -ENXIO;
204
205 dev = i2o_iop_find_device(c, kcmd.tid);
206 if (!dev)
207 return -ENXIO;
208
209 ops = (u8 *) kmalloc(kcmd.oplen, GFP_KERNEL);
210 if (!ops)
211 return -ENOMEM;
212
213 if (copy_from_user(ops, kcmd.opbuf, kcmd.oplen)) {
214 kfree(ops);
215 return -EFAULT;
216 }
217
218 /*
219 * It's possible to have a _very_ large table
220 * and that the user asks for all of it at once...
221 */
222 res = (u8 *) kmalloc(65536, GFP_KERNEL);
223 if (!res) {
224 kfree(ops);
225 return -ENOMEM;
226 }
227
228 len = i2o_parm_issue(dev, i2o_cmd, ops, kcmd.oplen, res, 65536);
229 kfree(ops);
230
231 if (len < 0) {
232 kfree(res);
233 return -EAGAIN;
234 }
235
236 put_user(len, kcmd.reslen);
237 if (len > reslen)
238 ret = -ENOBUFS;
239 else if (copy_to_user(kcmd.resbuf, res, len))
240 ret = -EFAULT;
241
242 kfree(res);
243
244 return ret;
245};
246
247static int i2o_cfg_swdl(unsigned long arg)
248{
249 struct i2o_sw_xfer kxfer;
250 struct i2o_sw_xfer __user *pxfer = (struct i2o_sw_xfer __user *)arg;
251 unsigned char maxfrag = 0, curfrag = 1;
252 struct i2o_dma buffer;
253 struct i2o_message __iomem *msg;
254 u32 m;
255 unsigned int status = 0, swlen = 0, fragsize = 8192;
256 struct i2o_controller *c;
257
258 if (copy_from_user(&kxfer, pxfer, sizeof(struct i2o_sw_xfer)))
259 return -EFAULT;
260
261 if (get_user(swlen, kxfer.swlen) < 0)
262 return -EFAULT;
263
264 if (get_user(maxfrag, kxfer.maxfrag) < 0)
265 return -EFAULT;
266
267 if (get_user(curfrag, kxfer.curfrag) < 0)
268 return -EFAULT;
269
270 if (curfrag == maxfrag)
271 fragsize = swlen - (maxfrag - 1) * 8192;
272
273 if (!kxfer.buf || !access_ok(VERIFY_READ, kxfer.buf, fragsize))
274 return -EFAULT;
275
276 c = i2o_find_iop(kxfer.iop);
277 if (!c)
278 return -ENXIO;
279
280 m = i2o_msg_get_wait(c, &msg, I2O_TIMEOUT_MESSAGE_GET);
281 if (m == I2O_QUEUE_EMPTY)
282 return -EBUSY;
283
284 if (i2o_dma_alloc(&c->pdev->dev, &buffer, fragsize, GFP_KERNEL)) {
285 i2o_msg_nop(c, m);
286 return -ENOMEM;
287 }
288
289 __copy_from_user(buffer.virt, kxfer.buf, fragsize);
290
291 writel(NINE_WORD_MSG_SIZE | SGL_OFFSET_7, &msg->u.head[0]);
292 writel(I2O_CMD_SW_DOWNLOAD << 24 | HOST_TID << 12 | ADAPTER_TID,
293 &msg->u.head[1]);
294 writel(i2o_config_driver.context, &msg->u.head[2]);
295 writel(0, &msg->u.head[3]);
296 writel((((u32) kxfer.flags) << 24) | (((u32) kxfer.sw_type) << 16) |
297 (((u32) maxfrag) << 8) | (((u32) curfrag)), &msg->body[0]);
298 writel(swlen, &msg->body[1]);
299 writel(kxfer.sw_id, &msg->body[2]);
300 writel(0xD0000000 | fragsize, &msg->body[3]);
301 writel(buffer.phys, &msg->body[4]);
302
303 osm_debug("swdl frag %d/%d (size %d)\n", curfrag, maxfrag, fragsize);
304 status = i2o_msg_post_wait_mem(c, m, 60, &buffer);
305
306 if (status != -ETIMEDOUT)
307 i2o_dma_free(&c->pdev->dev, &buffer);
308
309 if (status != I2O_POST_WAIT_OK) {
310 // it fails if you try and send frags out of order
311 // and for some yet unknown reasons too
312 osm_info("swdl failed, DetailedStatus = %d\n", status);
313 return status;
314 }
315
316 return 0;
317};
318
319static int i2o_cfg_swul(unsigned long arg)
320{
321 struct i2o_sw_xfer kxfer;
322 struct i2o_sw_xfer __user *pxfer = (struct i2o_sw_xfer __user *)arg;
323 unsigned char maxfrag = 0, curfrag = 1;
324 struct i2o_dma buffer;
325 struct i2o_message __iomem *msg;
326 u32 m;
327 unsigned int status = 0, swlen = 0, fragsize = 8192;
328 struct i2o_controller *c;
329 int ret = 0;
330
331 if (copy_from_user(&kxfer, pxfer, sizeof(struct i2o_sw_xfer)))
332 goto return_fault;
333
334 if (get_user(swlen, kxfer.swlen) < 0)
335 goto return_fault;
336
337 if (get_user(maxfrag, kxfer.maxfrag) < 0)
338 goto return_fault;
339
340 if (get_user(curfrag, kxfer.curfrag) < 0)
341 goto return_fault;
342
343 if (curfrag == maxfrag)
344 fragsize = swlen - (maxfrag - 1) * 8192;
345
346 if (!kxfer.buf)
347 goto return_fault;
348
349 c = i2o_find_iop(kxfer.iop);
350 if (!c)
351 return -ENXIO;
352
353 m = i2o_msg_get_wait(c, &msg, I2O_TIMEOUT_MESSAGE_GET);
354 if (m == I2O_QUEUE_EMPTY)
355 return -EBUSY;
356
357 if (i2o_dma_alloc(&c->pdev->dev, &buffer, fragsize, GFP_KERNEL)) {
358 i2o_msg_nop(c, m);
359 return -ENOMEM;
360 }
361
362 writel(NINE_WORD_MSG_SIZE | SGL_OFFSET_7, &msg->u.head[0]);
363 writel(I2O_CMD_SW_UPLOAD << 24 | HOST_TID << 12 | ADAPTER_TID,
364 &msg->u.head[1]);
365 writel(i2o_config_driver.context, &msg->u.head[2]);
366 writel(0, &msg->u.head[3]);
367 writel((u32) kxfer.flags << 24 | (u32) kxfer.
368 sw_type << 16 | (u32) maxfrag << 8 | (u32) curfrag,
369 &msg->body[0]);
370 writel(swlen, &msg->body[1]);
371 writel(kxfer.sw_id, &msg->body[2]);
372 writel(0xD0000000 | fragsize, &msg->body[3]);
373 writel(buffer.phys, &msg->body[4]);
374
375 osm_debug("swul frag %d/%d (size %d)\n", curfrag, maxfrag, fragsize);
376 status = i2o_msg_post_wait_mem(c, m, 60, &buffer);
377
378 if (status != I2O_POST_WAIT_OK) {
379 if (status != -ETIMEDOUT)
380 i2o_dma_free(&c->pdev->dev, &buffer);
381
382 osm_info("swul failed, DetailedStatus = %d\n", status);
383 return status;
384 }
385
386 if (copy_to_user(kxfer.buf, buffer.virt, fragsize))
387 ret = -EFAULT;
388
389 i2o_dma_free(&c->pdev->dev, &buffer);
390
391return_ret:
392 return ret;
393return_fault:
394 ret = -EFAULT;
395 goto return_ret;
396};
397
398static int i2o_cfg_swdel(unsigned long arg)
399{
400 struct i2o_controller *c;
401 struct i2o_sw_xfer kxfer;
402 struct i2o_sw_xfer __user *pxfer = (struct i2o_sw_xfer __user *)arg;
403 struct i2o_message __iomem *msg;
404 u32 m;
405 unsigned int swlen;
406 int token;
407
408 if (copy_from_user(&kxfer, pxfer, sizeof(struct i2o_sw_xfer)))
409 return -EFAULT;
410
411 if (get_user(swlen, kxfer.swlen) < 0)
412 return -EFAULT;
413
414 c = i2o_find_iop(kxfer.iop);
415 if (!c)
416 return -ENXIO;
417
418 m = i2o_msg_get_wait(c, &msg, I2O_TIMEOUT_MESSAGE_GET);
419 if (m == I2O_QUEUE_EMPTY)
420 return -EBUSY;
421
422 writel(SEVEN_WORD_MSG_SIZE | SGL_OFFSET_0, &msg->u.head[0]);
423 writel(I2O_CMD_SW_REMOVE << 24 | HOST_TID << 12 | ADAPTER_TID,
424 &msg->u.head[1]);
425 writel(i2o_config_driver.context, &msg->u.head[2]);
426 writel(0, &msg->u.head[3]);
427 writel((u32) kxfer.flags << 24 | (u32) kxfer.sw_type << 16,
428 &msg->body[0]);
429 writel(swlen, &msg->body[1]);
430 writel(kxfer.sw_id, &msg->body[2]);
431
432 token = i2o_msg_post_wait(c, m, 10);
433
434 if (token != I2O_POST_WAIT_OK) {
435 osm_info("swdel failed, DetailedStatus = %d\n", token);
436 return -ETIMEDOUT;
437 }
438
439 return 0;
440};
441
442static int i2o_cfg_validate(unsigned long arg)
443{
444 int token;
445 int iop = (int)arg;
446 struct i2o_message __iomem *msg;
447 u32 m;
448 struct i2o_controller *c;
449
450 c = i2o_find_iop(iop);
451 if (!c)
452 return -ENXIO;
453
454 m = i2o_msg_get_wait(c, &msg, I2O_TIMEOUT_MESSAGE_GET);
455 if (m == I2O_QUEUE_EMPTY)
456 return -EBUSY;
457
458 writel(FOUR_WORD_MSG_SIZE | SGL_OFFSET_0, &msg->u.head[0]);
459 writel(I2O_CMD_CONFIG_VALIDATE << 24 | HOST_TID << 12 | iop,
460 &msg->u.head[1]);
461 writel(i2o_config_driver.context, &msg->u.head[2]);
462 writel(0, &msg->u.head[3]);
463
464 token = i2o_msg_post_wait(c, m, 10);
465
466 if (token != I2O_POST_WAIT_OK) {
467 osm_info("Can't validate configuration, ErrorStatus = %d\n",
468 token);
469 return -ETIMEDOUT;
470 }
471
472 return 0;
473};
474
475static int i2o_cfg_evt_reg(unsigned long arg, struct file *fp)
476{
477 struct i2o_message __iomem *msg;
478 u32 m;
479 struct i2o_evt_id __user *pdesc = (struct i2o_evt_id __user *)arg;
480 struct i2o_evt_id kdesc;
481 struct i2o_controller *c;
482 struct i2o_device *d;
483
484 if (copy_from_user(&kdesc, pdesc, sizeof(struct i2o_evt_id)))
485 return -EFAULT;
486
487 /* IOP exists? */
488 c = i2o_find_iop(kdesc.iop);
489 if (!c)
490 return -ENXIO;
491
492 /* Device exists? */
493 d = i2o_iop_find_device(c, kdesc.tid);
494 if (!d)
495 return -ENODEV;
496
497 m = i2o_msg_get_wait(c, &msg, I2O_TIMEOUT_MESSAGE_GET);
498 if (m == I2O_QUEUE_EMPTY)
499 return -EBUSY;
500
501 writel(FOUR_WORD_MSG_SIZE | SGL_OFFSET_0, &msg->u.head[0]);
502 writel(I2O_CMD_UTIL_EVT_REGISTER << 24 | HOST_TID << 12 | kdesc.tid,
503 &msg->u.head[1]);
504 writel(i2o_config_driver.context, &msg->u.head[2]);
505 writel(i2o_cntxt_list_add(c, fp->private_data), &msg->u.head[3]);
506 writel(kdesc.evt_mask, &msg->body[0]);
507
508 i2o_msg_post(c, m);
509
510 return 0;
511}
512
513static int i2o_cfg_evt_get(unsigned long arg, struct file *fp)
514{
515 struct i2o_cfg_info *p = NULL;
516 struct i2o_evt_get __user *uget = (struct i2o_evt_get __user *)arg;
517 struct i2o_evt_get kget;
518 unsigned long flags;
519
520 for (p = open_files; p; p = p->next)
521 if (p->q_id == (ulong) fp->private_data)
522 break;
523
524 if (!p->q_len)
525 return -ENOENT;
526
527 memcpy(&kget.info, &p->event_q[p->q_out], sizeof(struct i2o_evt_info));
528 MODINC(p->q_out, I2O_EVT_Q_LEN);
529 spin_lock_irqsave(&i2o_config_lock, flags);
530 p->q_len--;
531 kget.pending = p->q_len;
532 kget.lost = p->q_lost;
533 spin_unlock_irqrestore(&i2o_config_lock, flags);
534
535 if (copy_to_user(uget, &kget, sizeof(struct i2o_evt_get)))
536 return -EFAULT;
537 return 0;
538}
539
540#ifdef CONFIG_COMPAT
541static int i2o_cfg_passthru32(unsigned fd, unsigned cmnd, unsigned long arg,
542 struct file *file)
543{
544 struct i2o_cmd_passthru32 __user *cmd;
545 struct i2o_controller *c;
546 u32 __user *user_msg;
547 u32 *reply = NULL;
548 u32 __user *user_reply = NULL;
549 u32 size = 0;
550 u32 reply_size = 0;
551 u32 rcode = 0;
552 struct i2o_dma sg_list[SG_TABLESIZE];
553 u32 sg_offset = 0;
554 u32 sg_count = 0;
555 u32 i = 0;
556 i2o_status_block *sb;
557 struct i2o_message *msg;
558 u32 m;
559 unsigned int iop;
560
561 cmd = (struct i2o_cmd_passthru32 __user *)arg;
562
563 if (get_user(iop, &cmd->iop) || get_user(i, &cmd->msg))
564 return -EFAULT;
565
566 user_msg = compat_ptr(i);
567
568 c = i2o_find_iop(iop);
569 if (!c) {
570 osm_debug("controller %d not found\n", iop);
571 return -ENXIO;
572 }
573
574 m = i2o_msg_get_wait(c, &msg, I2O_TIMEOUT_MESSAGE_GET);
575
576 sb = c->status_block.virt;
577
578 if (get_user(size, &user_msg[0])) {
579 osm_warn("unable to get size!\n");
580 return -EFAULT;
581 }
582 size = size >> 16;
583
584 if (size > sb->inbound_frame_size) {
585 osm_warn("size of message > inbound_frame_size");
586 return -EFAULT;
587 }
588
589 user_reply = &user_msg[size];
590
591 size <<= 2; // Convert to bytes
592
593 /* Copy in the user's I2O command */
594 if (copy_from_user(msg, user_msg, size)) {
595 osm_warn("unable to copy user message\n");
596 return -EFAULT;
597 }
598 i2o_dump_message(msg);
599
600 if (get_user(reply_size, &user_reply[0]) < 0)
601 return -EFAULT;
602
603 reply_size >>= 16;
604 reply_size <<= 2;
605
606 reply = kmalloc(reply_size, GFP_KERNEL);
607 if (!reply) {
608 printk(KERN_WARNING "%s: Could not allocate reply buffer\n",
609 c->name);
610 return -ENOMEM;
611 }
612 memset(reply, 0, reply_size);
613
614 sg_offset = (msg->u.head[0] >> 4) & 0x0f;
615
616 writel(i2o_config_driver.context, &msg->u.s.icntxt);
617 writel(i2o_cntxt_list_add(c, reply), &msg->u.s.tcntxt);
618
619 memset(sg_list, 0, sizeof(sg_list[0]) * SG_TABLESIZE);
620 if (sg_offset) {
621 struct sg_simple_element *sg;
622
623 if (sg_offset * 4 >= size) {
624 rcode = -EFAULT;
625 goto cleanup;
626 }
627 // TODO 64bit fix
628 sg = (struct sg_simple_element *)((&msg->u.head[0]) +
629 sg_offset);
630 sg_count =
631 (size - sg_offset * 4) / sizeof(struct sg_simple_element);
632 if (sg_count > SG_TABLESIZE) {
633 printk(KERN_DEBUG "%s:IOCTL SG List too large (%u)\n",
634 c->name, sg_count);
635 kfree(reply);
636 return -EINVAL;
637 }
638
639 for (i = 0; i < sg_count; i++) {
640 int sg_size;
641 struct i2o_dma *p;
642
643 if (!(sg[i].flag_count & 0x10000000
644 /*I2O_SGL_FLAGS_SIMPLE_ADDRESS_ELEMENT */ )) {
645 printk(KERN_DEBUG
646 "%s:Bad SG element %d - not simple (%x)\n",
647 c->name, i, sg[i].flag_count);
648 rcode = -EINVAL;
649 goto cleanup;
650 }
651 sg_size = sg[i].flag_count & 0xffffff;
652 p = &(sg_list[i]);
653 /* Allocate memory for the transfer */
654 if (i2o_dma_alloc
655 (&c->pdev->dev, p, sg_size,
656 PCI_DMA_BIDIRECTIONAL)) {
657 printk(KERN_DEBUG
658 "%s: Could not allocate SG buffer - size = %d buffer number %d of %d\n",
659 c->name, sg_size, i, sg_count);
660 rcode = -ENOMEM;
661 goto cleanup;
662 }
663 /* Copy in the user's SG buffer if necessary */
664 if (sg[i].
665 flag_count & 0x04000000 /*I2O_SGL_FLAGS_DIR */ ) {
666 // TODO 64bit fix
667 if (copy_from_user
668 (p->virt, (void __user *)(unsigned long)sg[i].addr_bus,
669 sg_size)) {
670 printk(KERN_DEBUG
671 "%s: Could not copy SG buf %d FROM user\n",
672 c->name, i);
673 rcode = -EFAULT;
674 goto cleanup;
675 }
676 }
677 //TODO 64bit fix
678 sg[i].addr_bus = (u32) p->phys;
679 }
680 }
681
682 rcode = i2o_msg_post_wait(c, m, 60);
683 if (rcode)
684 goto cleanup;
685
686 if (sg_offset) {
687 u32 msg[128];
688 /* Copy back the Scatter Gather buffers back to user space */
689 u32 j;
690 // TODO 64bit fix
691 struct sg_simple_element *sg;
692 int sg_size;
693
694 // re-acquire the original message to handle correctly the sg copy operation
695 memset(&msg, 0, MSG_FRAME_SIZE * 4);
696 // get user msg size in u32s
697 if (get_user(size, &user_msg[0])) {
698 rcode = -EFAULT;
699 goto cleanup;
700 }
701 size = size >> 16;
702 size *= 4;
703 /* Copy in the user's I2O command */
704 if (copy_from_user(msg, user_msg, size)) {
705 rcode = -EFAULT;
706 goto cleanup;
707 }
708 sg_count =
709 (size - sg_offset * 4) / sizeof(struct sg_simple_element);
710
711 // TODO 64bit fix
712 sg = (struct sg_simple_element *)(msg + sg_offset);
713 for (j = 0; j < sg_count; j++) {
714 /* Copy out the SG list to user's buffer if necessary */
715 if (!
716 (sg[j].
717 flag_count & 0x4000000 /*I2O_SGL_FLAGS_DIR */ )) {
718 sg_size = sg[j].flag_count & 0xffffff;
719 // TODO 64bit fix
720 if (copy_to_user
721 ((void __user *)(u64) sg[j].addr_bus,
722 sg_list[j].virt, sg_size)) {
723 printk(KERN_WARNING
724 "%s: Could not copy %p TO user %x\n",
725 c->name, sg_list[j].virt,
726 sg[j].addr_bus);
727 rcode = -EFAULT;
728 goto cleanup;
729 }
730 }
731 }
732 }
733
734 /* Copy back the reply to user space */
735 if (reply_size) {
736 // we wrote our own values for context - now restore the user supplied ones
737 if (copy_from_user(reply + 2, user_msg + 2, sizeof(u32) * 2)) {
738 printk(KERN_WARNING
739 "%s: Could not copy message context FROM user\n",
740 c->name);
741 rcode = -EFAULT;
742 }
743 if (copy_to_user(user_reply, reply, reply_size)) {
744 printk(KERN_WARNING
745 "%s: Could not copy reply TO user\n", c->name);
746 rcode = -EFAULT;
747 }
748 }
749
750 cleanup:
751 kfree(reply);
752 return rcode;
753}
754
755#else
756
757static int i2o_cfg_passthru(unsigned long arg)
758{
759 struct i2o_cmd_passthru __user *cmd =
760 (struct i2o_cmd_passthru __user *)arg;
761 struct i2o_controller *c;
762 u32 __user *user_msg;
763 u32 *reply = NULL;
764 u32 __user *user_reply = NULL;
765 u32 size = 0;
766 u32 reply_size = 0;
767 u32 rcode = 0;
768 void *sg_list[SG_TABLESIZE];
769 u32 sg_offset = 0;
770 u32 sg_count = 0;
771 int sg_index = 0;
772 u32 i = 0;
773 void *p = NULL;
774 i2o_status_block *sb;
775 struct i2o_message __iomem *msg;
776 u32 m;
777 unsigned int iop;
778
779 if (get_user(iop, &cmd->iop) || get_user(user_msg, &cmd->msg))
780 return -EFAULT;
781
782 c = i2o_find_iop(iop);
783 if (!c) {
784 osm_warn("controller %d not found\n", iop);
785 return -ENXIO;
786 }
787
788 m = i2o_msg_get_wait(c, &msg, I2O_TIMEOUT_MESSAGE_GET);
789
790 sb = c->status_block.virt;
791
792 if (get_user(size, &user_msg[0]))
793 return -EFAULT;
794 size = size >> 16;
795
796 if (size > sb->inbound_frame_size) {
797 osm_warn("size of message > inbound_frame_size");
798 return -EFAULT;
799 }
800
801 user_reply = &user_msg[size];
802
803 size <<= 2; // Convert to bytes
804
805 /* Copy in the user's I2O command */
806 if (copy_from_user(msg, user_msg, size))
807 return -EFAULT;
808
809 if (get_user(reply_size, &user_reply[0]) < 0)
810 return -EFAULT;
811
812 reply_size >>= 16;
813 reply_size <<= 2;
814
815 reply = kmalloc(reply_size, GFP_KERNEL);
816 if (!reply) {
817 printk(KERN_WARNING "%s: Could not allocate reply buffer\n",
818 c->name);
819 return -ENOMEM;
820 }
821 memset(reply, 0, reply_size);
822
823 sg_offset = (msg->u.head[0] >> 4) & 0x0f;
824
825 writel(i2o_config_driver.context, &msg->u.s.icntxt);
826 writel(i2o_cntxt_list_add(c, reply), &msg->u.s.tcntxt);
827
828 memset(sg_list, 0, sizeof(sg_list[0]) * SG_TABLESIZE);
829 if (sg_offset) {
830 struct sg_simple_element *sg;
831
832 if (sg_offset * 4 >= size) {
833 rcode = -EFAULT;
834 goto cleanup;
835 }
836 // TODO 64bit fix
837 sg = (struct sg_simple_element *)((&msg->u.head[0]) +
838 sg_offset);
839 sg_count =
840 (size - sg_offset * 4) / sizeof(struct sg_simple_element);
841 if (sg_count > SG_TABLESIZE) {
842 printk(KERN_DEBUG "%s:IOCTL SG List too large (%u)\n",
843 c->name, sg_count);
844 kfree(reply);
845 return -EINVAL;
846 }
847
848 for (i = 0; i < sg_count; i++) {
849 int sg_size;
850
851 if (!(sg[i].flag_count & 0x10000000
852 /*I2O_SGL_FLAGS_SIMPLE_ADDRESS_ELEMENT */ )) {
853 printk(KERN_DEBUG
854 "%s:Bad SG element %d - not simple (%x)\n",
855 c->name, i, sg[i].flag_count);
856 rcode = -EINVAL;
857 goto cleanup;
858 }
859 sg_size = sg[i].flag_count & 0xffffff;
860 /* Allocate memory for the transfer */
861 p = kmalloc(sg_size, GFP_KERNEL);
862 if (!p) {
863 printk(KERN_DEBUG
864 "%s: Could not allocate SG buffer - size = %d buffer number %d of %d\n",
865 c->name, sg_size, i, sg_count);
866 rcode = -ENOMEM;
867 goto cleanup;
868 }
869 sg_list[sg_index++] = p; // sglist indexed with input frame, not our internal frame.
870 /* Copy in the user's SG buffer if necessary */
871 if (sg[i].
872 flag_count & 0x04000000 /*I2O_SGL_FLAGS_DIR */ ) {
873 // TODO 64bit fix
874 if (copy_from_user
875 (p, (void __user *)sg[i].addr_bus,
876 sg_size)) {
877 printk(KERN_DEBUG
878 "%s: Could not copy SG buf %d FROM user\n",
879 c->name, i);
880 rcode = -EFAULT;
881 goto cleanup;
882 }
883 }
884 //TODO 64bit fix
885 sg[i].addr_bus = virt_to_bus(p);
886 }
887 }
888
889 rcode = i2o_msg_post_wait(c, m, 60);
890 if (rcode)
891 goto cleanup;
892
893 if (sg_offset) {
894 u32 msg[128];
895 /* Copy back the Scatter Gather buffers back to user space */
896 u32 j;
897 // TODO 64bit fix
898 struct sg_simple_element *sg;
899 int sg_size;
900
901 // re-acquire the original message to handle correctly the sg copy operation
902 memset(&msg, 0, MSG_FRAME_SIZE * 4);
903 // get user msg size in u32s
904 if (get_user(size, &user_msg[0])) {
905 rcode = -EFAULT;
906 goto cleanup;
907 }
908 size = size >> 16;
909 size *= 4;
910 /* Copy in the user's I2O command */
911 if (copy_from_user(msg, user_msg, size)) {
912 rcode = -EFAULT;
913 goto cleanup;
914 }
915 sg_count =
916 (size - sg_offset * 4) / sizeof(struct sg_simple_element);
917
918 // TODO 64bit fix
919 sg = (struct sg_simple_element *)(msg + sg_offset);
920 for (j = 0; j < sg_count; j++) {
921 /* Copy out the SG list to user's buffer if necessary */
922 if (!
923 (sg[j].
924 flag_count & 0x4000000 /*I2O_SGL_FLAGS_DIR */ )) {
925 sg_size = sg[j].flag_count & 0xffffff;
926 // TODO 64bit fix
927 if (copy_to_user
928 ((void __user *)sg[j].addr_bus, sg_list[j],
929 sg_size)) {
930 printk(KERN_WARNING
931 "%s: Could not copy %p TO user %x\n",
932 c->name, sg_list[j],
933 sg[j].addr_bus);
934 rcode = -EFAULT;
935 goto cleanup;
936 }
937 }
938 }
939 }
940
941 /* Copy back the reply to user space */
942 if (reply_size) {
943 // we wrote our own values for context - now restore the user supplied ones
944 if (copy_from_user(reply + 2, user_msg + 2, sizeof(u32) * 2)) {
945 printk(KERN_WARNING
946 "%s: Could not copy message context FROM user\n",
947 c->name);
948 rcode = -EFAULT;
949 }
950 if (copy_to_user(user_reply, reply, reply_size)) {
951 printk(KERN_WARNING
952 "%s: Could not copy reply TO user\n", c->name);
953 rcode = -EFAULT;
954 }
955 }
956
957 cleanup:
958 kfree(reply);
959 return rcode;
960}
961#endif
962
963/*
964 * IOCTL Handler
965 */
966static int i2o_cfg_ioctl(struct inode *inode, struct file *fp, unsigned int cmd,
967 unsigned long arg)
968{
969 int ret;
970
971 switch (cmd) {
972 case I2OGETIOPS:
973 ret = i2o_cfg_getiops(arg);
974 break;
975
976 case I2OHRTGET:
977 ret = i2o_cfg_gethrt(arg);
978 break;
979
980 case I2OLCTGET:
981 ret = i2o_cfg_getlct(arg);
982 break;
983
984 case I2OPARMSET:
985 ret = i2o_cfg_parms(arg, I2OPARMSET);
986 break;
987
988 case I2OPARMGET:
989 ret = i2o_cfg_parms(arg, I2OPARMGET);
990 break;
991
992 case I2OSWDL:
993 ret = i2o_cfg_swdl(arg);
994 break;
995
996 case I2OSWUL:
997 ret = i2o_cfg_swul(arg);
998 break;
999
1000 case I2OSWDEL:
1001 ret = i2o_cfg_swdel(arg);
1002 break;
1003
1004 case I2OVALIDATE:
1005 ret = i2o_cfg_validate(arg);
1006 break;
1007
1008 case I2OEVTREG:
1009 ret = i2o_cfg_evt_reg(arg, fp);
1010 break;
1011
1012 case I2OEVTGET:
1013 ret = i2o_cfg_evt_get(arg, fp);
1014 break;
1015
1016#ifndef CONFIG_COMPAT
1017 case I2OPASSTHRU:
1018 ret = i2o_cfg_passthru(arg);
1019 break;
1020#endif
1021
1022 default:
1023 osm_debug("unknown ioctl called!\n");
1024 ret = -EINVAL;
1025 }
1026
1027 return ret;
1028}
1029
1030static int cfg_open(struct inode *inode, struct file *file)
1031{
1032 struct i2o_cfg_info *tmp =
1033 (struct i2o_cfg_info *)kmalloc(sizeof(struct i2o_cfg_info),
1034 GFP_KERNEL);
1035 unsigned long flags;
1036
1037 if (!tmp)
1038 return -ENOMEM;
1039
1040 file->private_data = (void *)(i2o_cfg_info_id++);
1041 tmp->fp = file;
1042 tmp->fasync = NULL;
1043 tmp->q_id = (ulong) file->private_data;
1044 tmp->q_len = 0;
1045 tmp->q_in = 0;
1046 tmp->q_out = 0;
1047 tmp->q_lost = 0;
1048 tmp->next = open_files;
1049
1050 spin_lock_irqsave(&i2o_config_lock, flags);
1051 open_files = tmp;
1052 spin_unlock_irqrestore(&i2o_config_lock, flags);
1053
1054 return 0;
1055}
1056
1057static int cfg_fasync(int fd, struct file *fp, int on)
1058{
1059 ulong id = (ulong) fp->private_data;
1060 struct i2o_cfg_info *p;
1061
1062 for (p = open_files; p; p = p->next)
1063 if (p->q_id == id)
1064 break;
1065
1066 if (!p)
1067 return -EBADF;
1068
1069 return fasync_helper(fd, fp, on, &p->fasync);
1070}
1071
1072static int cfg_release(struct inode *inode, struct file *file)
1073{
1074 ulong id = (ulong) file->private_data;
1075 struct i2o_cfg_info *p1, *p2;
1076 unsigned long flags;
1077
1078 lock_kernel();
1079 p1 = p2 = NULL;
1080
1081 spin_lock_irqsave(&i2o_config_lock, flags);
1082 for (p1 = open_files; p1;) {
1083 if (p1->q_id == id) {
1084
1085 if (p1->fasync)
1086 cfg_fasync(-1, file, 0);
1087 if (p2)
1088 p2->next = p1->next;
1089 else
1090 open_files = p1->next;
1091
1092 kfree(p1);
1093 break;
1094 }
1095 p2 = p1;
1096 p1 = p1->next;
1097 }
1098 spin_unlock_irqrestore(&i2o_config_lock, flags);
1099 unlock_kernel();
1100
1101 return 0;
1102}
1103
1104static struct file_operations config_fops = {
1105 .owner = THIS_MODULE,
1106 .llseek = no_llseek,
1107 .ioctl = i2o_cfg_ioctl,
1108 .open = cfg_open,
1109 .release = cfg_release,
1110 .fasync = cfg_fasync,
1111};
1112
1113static struct miscdevice i2o_miscdev = {
1114 I2O_MINOR,
1115 "i2octl",
1116 &config_fops
1117};
1118
1119static int __init i2o_config_init(void)
1120{
1121 printk(KERN_INFO OSM_DESCRIPTION " v" OSM_VERSION "\n");
1122
1123 spin_lock_init(&i2o_config_lock);
1124
1125 if (misc_register(&i2o_miscdev) < 0) {
1126 osm_err("can't register device.\n");
1127 return -EBUSY;
1128 }
1129 /*
1130 * Install our handler
1131 */
1132 if (i2o_driver_register(&i2o_config_driver)) {
1133 osm_err("handler register failed.\n");
1134 misc_deregister(&i2o_miscdev);
1135 return -EBUSY;
1136 }
1137#ifdef CONFIG_COMPAT
1138 register_ioctl32_conversion(I2OPASSTHRU32, i2o_cfg_passthru32);
1139 register_ioctl32_conversion(I2OGETIOPS, (void *)sys_ioctl);
1140#endif
1141 return 0;
1142}
1143
1144static void i2o_config_exit(void)
1145{
1146#ifdef CONFIG_COMPAT
1147 unregister_ioctl32_conversion(I2OPASSTHRU32);
1148 unregister_ioctl32_conversion(I2OGETIOPS);
1149#endif
1150 misc_deregister(&i2o_miscdev);
1151 i2o_driver_unregister(&i2o_config_driver);
1152}
1153
1154MODULE_AUTHOR("Red Hat Software");
1155MODULE_LICENSE("GPL");
1156MODULE_DESCRIPTION(OSM_DESCRIPTION);
1157MODULE_VERSION(OSM_VERSION);
1158
1159module_init(i2o_config_init);
1160module_exit(i2o_config_exit);
diff --git a/drivers/message/i2o/i2o_lan.h b/drivers/message/i2o/i2o_lan.h
new file mode 100644
index 000000000000..561d63304d7e
--- /dev/null
+++ b/drivers/message/i2o/i2o_lan.h
@@ -0,0 +1,159 @@
1/*
2 * i2o_lan.h I2O LAN Class definitions
3 *
4 * I2O LAN CLASS OSM May 26th 2000
5 *
6 * (C) Copyright 1999, 2000 University of Helsinki,
7 * Department of Computer Science
8 *
9 * This code is still under development / test.
10 *
11 * Author: Auvo Häkkinen <Auvo.Hakkinen@cs.Helsinki.FI>
12 * Juha Sievänen <Juha.Sievanen@cs.Helsinki.FI>
13 * Taneli Vähäkangas <Taneli.Vahakangas@cs.Helsinki.FI>
14 */
15
16#ifndef _I2O_LAN_H
17#define _I2O_LAN_H
18
19/* Default values for tunable parameters first */
20
21#define I2O_LAN_MAX_BUCKETS_OUT 96
22#define I2O_LAN_BUCKET_THRESH 18 /* 9 buckets in one message */
23#define I2O_LAN_RX_COPYBREAK 200
24#define I2O_LAN_TX_TIMEOUT (1*HZ)
25#define I2O_LAN_TX_BATCH_MODE 2 /* 2=automatic, 1=on, 0=off */
26#define I2O_LAN_EVENT_MASK 0 /* 0=None, 0xFFC00002=All */
27
28/* LAN types */
29#define I2O_LAN_ETHERNET 0x0030
30#define I2O_LAN_100VG 0x0040
31#define I2O_LAN_TR 0x0050
32#define I2O_LAN_FDDI 0x0060
33#define I2O_LAN_FIBRE_CHANNEL 0x0070
34#define I2O_LAN_UNKNOWN 0x00000000
35
36/* Connector types */
37
38/* Ethernet */
39#define I2O_LAN_AUI (I2O_LAN_ETHERNET << 4) + 0x00000001
40#define I2O_LAN_10BASE5 (I2O_LAN_ETHERNET << 4) + 0x00000002
41#define I2O_LAN_FIORL (I2O_LAN_ETHERNET << 4) + 0x00000003
42#define I2O_LAN_10BASE2 (I2O_LAN_ETHERNET << 4) + 0x00000004
43#define I2O_LAN_10BROAD36 (I2O_LAN_ETHERNET << 4) + 0x00000005
44#define I2O_LAN_10BASE_T (I2O_LAN_ETHERNET << 4) + 0x00000006
45#define I2O_LAN_10BASE_FP (I2O_LAN_ETHERNET << 4) + 0x00000007
46#define I2O_LAN_10BASE_FB (I2O_LAN_ETHERNET << 4) + 0x00000008
47#define I2O_LAN_10BASE_FL (I2O_LAN_ETHERNET << 4) + 0x00000009
48#define I2O_LAN_100BASE_TX (I2O_LAN_ETHERNET << 4) + 0x0000000A
49#define I2O_LAN_100BASE_FX (I2O_LAN_ETHERNET << 4) + 0x0000000B
50#define I2O_LAN_100BASE_T4 (I2O_LAN_ETHERNET << 4) + 0x0000000C
51#define I2O_LAN_1000BASE_SX (I2O_LAN_ETHERNET << 4) + 0x0000000D
52#define I2O_LAN_1000BASE_LX (I2O_LAN_ETHERNET << 4) + 0x0000000E
53#define I2O_LAN_1000BASE_CX (I2O_LAN_ETHERNET << 4) + 0x0000000F
54#define I2O_LAN_1000BASE_T (I2O_LAN_ETHERNET << 4) + 0x00000010
55
56/* AnyLAN */
57#define I2O_LAN_100VG_ETHERNET (I2O_LAN_100VG << 4) + 0x00000001
58#define I2O_LAN_100VG_TR (I2O_LAN_100VG << 4) + 0x00000002
59
60/* Token Ring */
61#define I2O_LAN_4MBIT (I2O_LAN_TR << 4) + 0x00000001
62#define I2O_LAN_16MBIT (I2O_LAN_TR << 4) + 0x00000002
63
64/* FDDI */
65#define I2O_LAN_125MBAUD (I2O_LAN_FDDI << 4) + 0x00000001
66
67/* Fibre Channel */
68#define I2O_LAN_POINT_POINT (I2O_LAN_FIBRE_CHANNEL << 4) + 0x00000001
69#define I2O_LAN_ARB_LOOP (I2O_LAN_FIBRE_CHANNEL << 4) + 0x00000002
70#define I2O_LAN_PUBLIC_LOOP (I2O_LAN_FIBRE_CHANNEL << 4) + 0x00000003
71#define I2O_LAN_FABRIC (I2O_LAN_FIBRE_CHANNEL << 4) + 0x00000004
72
73#define I2O_LAN_EMULATION 0x00000F00
74#define I2O_LAN_OTHER 0x00000F01
75#define I2O_LAN_DEFAULT 0xFFFFFFFF
76
77/* LAN class functions */
78
79#define LAN_PACKET_SEND 0x3B
80#define LAN_SDU_SEND 0x3D
81#define LAN_RECEIVE_POST 0x3E
82#define LAN_RESET 0x35
83#define LAN_SUSPEND 0x37
84
85/* LAN DetailedStatusCode defines */
86#define I2O_LAN_DSC_SUCCESS 0x00
87#define I2O_LAN_DSC_DEVICE_FAILURE 0x01
88#define I2O_LAN_DSC_DESTINATION_NOT_FOUND 0x02
89#define I2O_LAN_DSC_TRANSMIT_ERROR 0x03
90#define I2O_LAN_DSC_TRANSMIT_ABORTED 0x04
91#define I2O_LAN_DSC_RECEIVE_ERROR 0x05
92#define I2O_LAN_DSC_RECEIVE_ABORTED 0x06
93#define I2O_LAN_DSC_DMA_ERROR 0x07
94#define I2O_LAN_DSC_BAD_PACKET_DETECTED 0x08
95#define I2O_LAN_DSC_OUT_OF_MEMORY 0x09
96#define I2O_LAN_DSC_BUCKET_OVERRUN 0x0A
97#define I2O_LAN_DSC_IOP_INTERNAL_ERROR 0x0B
98#define I2O_LAN_DSC_CANCELED 0x0C
99#define I2O_LAN_DSC_INVALID_TRANSACTION_CONTEXT 0x0D
100#define I2O_LAN_DSC_DEST_ADDRESS_DETECTED 0x0E
101#define I2O_LAN_DSC_DEST_ADDRESS_OMITTED 0x0F
102#define I2O_LAN_DSC_PARTIAL_PACKET_RETURNED 0x10
103#define I2O_LAN_DSC_SUSPENDED 0x11
104
105struct i2o_packet_info {
106 u32 offset : 24;
107 u32 flags : 8;
108 u32 len : 24;
109 u32 status : 8;
110};
111
112struct i2o_bucket_descriptor {
113 u32 context; /* FIXME: 64bit support */
114 struct i2o_packet_info packet_info[1];
115};
116
117/* Event Indicator Mask Flags for LAN OSM */
118
119#define I2O_LAN_EVT_LINK_DOWN 0x01
120#define I2O_LAN_EVT_LINK_UP 0x02
121#define I2O_LAN_EVT_MEDIA_CHANGE 0x04
122
123#include <linux/netdevice.h>
124#include <linux/fddidevice.h>
125
126struct i2o_lan_local {
127 u8 unit;
128 struct i2o_device *i2o_dev;
129
130 struct fddi_statistics stats; /* see also struct net_device_stats */
131 unsigned short (*type_trans)(struct sk_buff *, struct net_device *);
132 atomic_t buckets_out; /* nbr of unused buckets on DDM */
133 atomic_t tx_out; /* outstanding TXes */
134 u8 tx_count; /* packets in one TX message frame */
135 u16 tx_max_out; /* DDM's Tx queue len */
136 u8 sgl_max; /* max SGLs in one message frame */
137 u32 m; /* IOP address of the batch msg frame */
138
139 struct work_struct i2o_batch_send_task;
140 int send_active;
141 struct sk_buff **i2o_fbl; /* Free bucket list (to reuse skbs) */
142 int i2o_fbl_tail;
143 spinlock_t fbl_lock;
144
145 spinlock_t tx_lock;
146
147 u32 max_size_mc_table; /* max number of multicast addresses */
148
149 /* LAN OSM configurable parameters are here: */
150
151 u16 max_buckets_out; /* max nbr of buckets to send to DDM */
152 u16 bucket_thresh; /* send more when this many used */
153 u16 rx_copybreak;
154
155 u8 tx_batch_mode; /* Set when using batch mode sends */
156 u32 i2o_event_mask; /* To turn on interesting event flags */
157};
158
159#endif /* _I2O_LAN_H */
diff --git a/drivers/message/i2o/i2o_proc.c b/drivers/message/i2o/i2o_proc.c
new file mode 100644
index 000000000000..b176d0eeff7f
--- /dev/null
+++ b/drivers/message/i2o/i2o_proc.c
@@ -0,0 +1,2112 @@
1/*
2 * procfs handler for Linux I2O subsystem
3 *
4 * (c) Copyright 1999 Deepak Saxena
5 *
6 * Originally written by Deepak Saxena(deepak@plexity.net)
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the
10 * Free Software Foundation; either version 2 of the License, or (at your
11 * option) any later version.
12 *
13 * This is an initial test release. The code is based on the design of the
14 * ide procfs system (drivers/block/ide-proc.c). Some code taken from
15 * i2o-core module by Alan Cox.
16 *
17 * DISCLAIMER: This code is still under development/test and may cause
18 * your system to behave unpredictably. Use at your own discretion.
19 *
20 *
21 * Fixes/additions:
22 * Juha Sievänen (Juha.Sievanen@cs.Helsinki.FI),
23 * Auvo Häkkinen (Auvo.Hakkinen@cs.Helsinki.FI)
24 * University of Helsinki, Department of Computer Science
25 * LAN entries
26 * Markus Lidel <Markus.Lidel@shadowconnect.com>
27 * Changes for new I2O API
28 */
29
30#define OSM_NAME "proc-osm"
31#define OSM_VERSION "$Rev$"
32#define OSM_DESCRIPTION "I2O ProcFS OSM"
33
34#define I2O_MAX_MODULES 4
35// FIXME!
36#define FMT_U64_HEX "0x%08x%08x"
37#define U64_VAL(pu64) *((u32*)(pu64)+1), *((u32*)(pu64))
38
39#include <linux/types.h>
40#include <linux/kernel.h>
41#include <linux/pci.h>
42#include <linux/i2o.h>
43#include <linux/proc_fs.h>
44#include <linux/seq_file.h>
45#include <linux/init.h>
46#include <linux/module.h>
47#include <linux/errno.h>
48#include <linux/spinlock.h>
49#include <linux/workqueue.h>
50
51#include <asm/io.h>
52#include <asm/uaccess.h>
53#include <asm/byteorder.h>
54
55/* Structure used to define /proc entries */
56typedef struct _i2o_proc_entry_t {
57 char *name; /* entry name */
58 mode_t mode; /* mode */
59 struct file_operations *fops; /* open function */
60} i2o_proc_entry;
61
62/* global I2O /proc/i2o entry */
63static struct proc_dir_entry *i2o_proc_dir_root;
64
65/* proc OSM driver struct */
66static struct i2o_driver i2o_proc_driver = {
67 .name = OSM_NAME,
68};
69
70static int print_serial_number(struct seq_file *seq, u8 * serialno, int max_len)
71{
72 int i;
73
74 /* 19990419 -sralston
75 * The I2O v1.5 (and v2.0 so far) "official specification"
76 * got serial numbers WRONG!
77 * Apparently, and despite what Section 3.4.4 says and
78 * Figure 3-35 shows (pg 3-39 in the pdf doc),
79 * the convention / consensus seems to be:
80 * + First byte is SNFormat
81 * + Second byte is SNLen (but only if SNFormat==7 (?))
82 * + (v2.0) SCSI+BS may use IEEE Registered (64 or 128 bit) format
83 */
84 switch (serialno[0]) {
85 case I2O_SNFORMAT_BINARY: /* Binary */
86 seq_printf(seq, "0x");
87 for (i = 0; i < serialno[1]; i++) {
88 seq_printf(seq, "%02X", serialno[2 + i]);
89 }
90 break;
91
92 case I2O_SNFORMAT_ASCII: /* ASCII */
93 if (serialno[1] < ' ') { /* printable or SNLen? */
94 /* sanity */
95 max_len =
96 (max_len < serialno[1]) ? max_len : serialno[1];
97 serialno[1 + max_len] = '\0';
98
99 /* just print it */
100 seq_printf(seq, "%s", &serialno[2]);
101 } else {
102 /* print chars for specified length */
103 for (i = 0; i < serialno[1]; i++) {
104 seq_printf(seq, "%c", serialno[2 + i]);
105 }
106 }
107 break;
108
109 case I2O_SNFORMAT_UNICODE: /* UNICODE */
110 seq_printf(seq, "UNICODE Format. Can't Display\n");
111 break;
112
113 case I2O_SNFORMAT_LAN48_MAC: /* LAN-48 MAC Address */
114 seq_printf(seq,
115 "LAN-48 MAC address @ %02X:%02X:%02X:%02X:%02X:%02X",
116 serialno[2], serialno[3],
117 serialno[4], serialno[5], serialno[6], serialno[7]);
118 break;
119
120 case I2O_SNFORMAT_WAN: /* WAN MAC Address */
121 /* FIXME: Figure out what a WAN access address looks like?? */
122 seq_printf(seq, "WAN Access Address");
123 break;
124
125/* plus new in v2.0 */
126 case I2O_SNFORMAT_LAN64_MAC: /* LAN-64 MAC Address */
127 /* FIXME: Figure out what a LAN-64 address really looks like?? */
128 seq_printf(seq,
129 "LAN-64 MAC address @ [?:%02X:%02X:?] %02X:%02X:%02X:%02X:%02X:%02X",
130 serialno[8], serialno[9],
131 serialno[2], serialno[3],
132 serialno[4], serialno[5], serialno[6], serialno[7]);
133 break;
134
135 case I2O_SNFORMAT_DDM: /* I2O DDM */
136 seq_printf(seq,
137 "DDM: Tid=%03Xh, Rsvd=%04Xh, OrgId=%04Xh",
138 *(u16 *) & serialno[2],
139 *(u16 *) & serialno[4], *(u16 *) & serialno[6]);
140 break;
141
142 case I2O_SNFORMAT_IEEE_REG64: /* IEEE Registered (64-bit) */
143 case I2O_SNFORMAT_IEEE_REG128: /* IEEE Registered (128-bit) */
144 /* FIXME: Figure if this is even close?? */
145 seq_printf(seq,
146 "IEEE NodeName(hi,lo)=(%08Xh:%08Xh), PortName(hi,lo)=(%08Xh:%08Xh)\n",
147 *(u32 *) & serialno[2],
148 *(u32 *) & serialno[6],
149 *(u32 *) & serialno[10], *(u32 *) & serialno[14]);
150 break;
151
152 case I2O_SNFORMAT_UNKNOWN: /* Unknown 0 */
153 case I2O_SNFORMAT_UNKNOWN2: /* Unknown 0xff */
154 default:
155 seq_printf(seq, "Unknown data format (0x%02x)", serialno[0]);
156 break;
157 }
158
159 return 0;
160}
161
162/**
163 * i2o_get_class_name - do i2o class name lookup
164 * @class: class number
165 *
166 * Return a descriptive string for an i2o class
167 */
168static const char *i2o_get_class_name(int class)
169{
170 int idx = 16;
171 static char *i2o_class_name[] = {
172 "Executive",
173 "Device Driver Module",
174 "Block Device",
175 "Tape Device",
176 "LAN Interface",
177 "WAN Interface",
178 "Fibre Channel Port",
179 "Fibre Channel Device",
180 "SCSI Device",
181 "ATE Port",
182 "ATE Device",
183 "Floppy Controller",
184 "Floppy Device",
185 "Secondary Bus Port",
186 "Peer Transport Agent",
187 "Peer Transport",
188 "Unknown"
189 };
190
191 switch (class & 0xfff) {
192 case I2O_CLASS_EXECUTIVE:
193 idx = 0;
194 break;
195 case I2O_CLASS_DDM:
196 idx = 1;
197 break;
198 case I2O_CLASS_RANDOM_BLOCK_STORAGE:
199 idx = 2;
200 break;
201 case I2O_CLASS_SEQUENTIAL_STORAGE:
202 idx = 3;
203 break;
204 case I2O_CLASS_LAN:
205 idx = 4;
206 break;
207 case I2O_CLASS_WAN:
208 idx = 5;
209 break;
210 case I2O_CLASS_FIBRE_CHANNEL_PORT:
211 idx = 6;
212 break;
213 case I2O_CLASS_FIBRE_CHANNEL_PERIPHERAL:
214 idx = 7;
215 break;
216 case I2O_CLASS_SCSI_PERIPHERAL:
217 idx = 8;
218 break;
219 case I2O_CLASS_ATE_PORT:
220 idx = 9;
221 break;
222 case I2O_CLASS_ATE_PERIPHERAL:
223 idx = 10;
224 break;
225 case I2O_CLASS_FLOPPY_CONTROLLER:
226 idx = 11;
227 break;
228 case I2O_CLASS_FLOPPY_DEVICE:
229 idx = 12;
230 break;
231 case I2O_CLASS_BUS_ADAPTER_PORT:
232 idx = 13;
233 break;
234 case I2O_CLASS_PEER_TRANSPORT_AGENT:
235 idx = 14;
236 break;
237 case I2O_CLASS_PEER_TRANSPORT:
238 idx = 15;
239 break;
240 }
241
242 return i2o_class_name[idx];
243}
244
245#define SCSI_TABLE_SIZE 13
246static char *scsi_devices[] = {
247 "Direct-Access Read/Write",
248 "Sequential-Access Storage",
249 "Printer",
250 "Processor",
251 "WORM Device",
252 "CD-ROM Device",
253 "Scanner Device",
254 "Optical Memory Device",
255 "Medium Changer Device",
256 "Communications Device",
257 "Graphics Art Pre-Press Device",
258 "Graphics Art Pre-Press Device",
259 "Array Controller Device"
260};
261
262static char *chtostr(u8 * chars, int n)
263{
264 char tmp[256];
265 tmp[0] = 0;
266 return strncat(tmp, (char *)chars, n);
267}
268
269static int i2o_report_query_status(struct seq_file *seq, int block_status,
270 char *group)
271{
272 switch (block_status) {
273 case -ETIMEDOUT:
274 return seq_printf(seq, "Timeout reading group %s.\n", group);
275 case -ENOMEM:
276 return seq_printf(seq, "No free memory to read the table.\n");
277 case -I2O_PARAMS_STATUS_INVALID_GROUP_ID:
278 return seq_printf(seq, "Group %s not supported.\n", group);
279 default:
280 return seq_printf(seq,
281 "Error reading group %s. BlockStatus 0x%02X\n",
282 group, -block_status);
283 }
284}
285
286static char *bus_strings[] = {
287 "Local Bus",
288 "ISA",
289 "EISA",
290 "MCA",
291 "PCI",
292 "PCMCIA",
293 "NUBUS",
294 "CARDBUS"
295};
296
297static int i2o_seq_show_hrt(struct seq_file *seq, void *v)
298{
299 struct i2o_controller *c = (struct i2o_controller *)seq->private;
300 i2o_hrt *hrt = (i2o_hrt *) c->hrt.virt;
301 u32 bus;
302 int i;
303
304 if (hrt->hrt_version) {
305 seq_printf(seq,
306 "HRT table for controller is too new a version.\n");
307 return 0;
308 }
309
310 seq_printf(seq, "HRT has %d entries of %d bytes each.\n",
311 hrt->num_entries, hrt->entry_len << 2);
312
313 for (i = 0; i < hrt->num_entries; i++) {
314 seq_printf(seq, "Entry %d:\n", i);
315 seq_printf(seq, " Adapter ID: %0#10x\n",
316 hrt->hrt_entry[i].adapter_id);
317 seq_printf(seq, " Controlling tid: %0#6x\n",
318 hrt->hrt_entry[i].parent_tid);
319
320 if (hrt->hrt_entry[i].bus_type != 0x80) {
321 bus = hrt->hrt_entry[i].bus_type;
322 seq_printf(seq, " %s Information\n",
323 bus_strings[bus]);
324
325 switch (bus) {
326 case I2O_BUS_LOCAL:
327 seq_printf(seq, " IOBase: %0#6x,",
328 hrt->hrt_entry[i].bus.local_bus.
329 LbBaseIOPort);
330 seq_printf(seq, " MemoryBase: %0#10x\n",
331 hrt->hrt_entry[i].bus.local_bus.
332 LbBaseMemoryAddress);
333 break;
334
335 case I2O_BUS_ISA:
336 seq_printf(seq, " IOBase: %0#6x,",
337 hrt->hrt_entry[i].bus.isa_bus.
338 IsaBaseIOPort);
339 seq_printf(seq, " MemoryBase: %0#10x,",
340 hrt->hrt_entry[i].bus.isa_bus.
341 IsaBaseMemoryAddress);
342 seq_printf(seq, " CSN: %0#4x,",
343 hrt->hrt_entry[i].bus.isa_bus.CSN);
344 break;
345
346 case I2O_BUS_EISA:
347 seq_printf(seq, " IOBase: %0#6x,",
348 hrt->hrt_entry[i].bus.eisa_bus.
349 EisaBaseIOPort);
350 seq_printf(seq, " MemoryBase: %0#10x,",
351 hrt->hrt_entry[i].bus.eisa_bus.
352 EisaBaseMemoryAddress);
353 seq_printf(seq, " Slot: %0#4x,",
354 hrt->hrt_entry[i].bus.eisa_bus.
355 EisaSlotNumber);
356 break;
357
358 case I2O_BUS_MCA:
359 seq_printf(seq, " IOBase: %0#6x,",
360 hrt->hrt_entry[i].bus.mca_bus.
361 McaBaseIOPort);
362 seq_printf(seq, " MemoryBase: %0#10x,",
363 hrt->hrt_entry[i].bus.mca_bus.
364 McaBaseMemoryAddress);
365 seq_printf(seq, " Slot: %0#4x,",
366 hrt->hrt_entry[i].bus.mca_bus.
367 McaSlotNumber);
368 break;
369
370 case I2O_BUS_PCI:
371 seq_printf(seq, " Bus: %0#4x",
372 hrt->hrt_entry[i].bus.pci_bus.
373 PciBusNumber);
374 seq_printf(seq, " Dev: %0#4x",
375 hrt->hrt_entry[i].bus.pci_bus.
376 PciDeviceNumber);
377 seq_printf(seq, " Func: %0#4x",
378 hrt->hrt_entry[i].bus.pci_bus.
379 PciFunctionNumber);
380 seq_printf(seq, " Vendor: %0#6x",
381 hrt->hrt_entry[i].bus.pci_bus.
382 PciVendorID);
383 seq_printf(seq, " Device: %0#6x\n",
384 hrt->hrt_entry[i].bus.pci_bus.
385 PciDeviceID);
386 break;
387
388 default:
389 seq_printf(seq, " Unsupported Bus Type\n");
390 }
391 } else
392 seq_printf(seq, " Unknown Bus Type\n");
393 }
394
395 return 0;
396}
397
398static int i2o_seq_show_lct(struct seq_file *seq, void *v)
399{
400 struct i2o_controller *c = (struct i2o_controller *)seq->private;
401 i2o_lct *lct = (i2o_lct *) c->lct;
402 int entries;
403 int i;
404
405#define BUS_TABLE_SIZE 3
406 static char *bus_ports[] = {
407 "Generic Bus",
408 "SCSI Bus",
409 "Fibre Channel Bus"
410 };
411
412 entries = (lct->table_size - 3) / 9;
413
414 seq_printf(seq, "LCT contains %d %s\n", entries,
415 entries == 1 ? "entry" : "entries");
416 if (lct->boot_tid)
417 seq_printf(seq, "Boot Device @ ID %d\n", lct->boot_tid);
418
419 seq_printf(seq, "Current Change Indicator: %#10x\n", lct->change_ind);
420
421 for (i = 0; i < entries; i++) {
422 seq_printf(seq, "Entry %d\n", i);
423 seq_printf(seq, " Class, SubClass : %s",
424 i2o_get_class_name(lct->lct_entry[i].class_id));
425
426 /*
427 * Classes which we'll print subclass info for
428 */
429 switch (lct->lct_entry[i].class_id & 0xFFF) {
430 case I2O_CLASS_RANDOM_BLOCK_STORAGE:
431 switch (lct->lct_entry[i].sub_class) {
432 case 0x00:
433 seq_printf(seq, ", Direct-Access Read/Write");
434 break;
435
436 case 0x04:
437 seq_printf(seq, ", WORM Drive");
438 break;
439
440 case 0x05:
441 seq_printf(seq, ", CD-ROM Drive");
442 break;
443
444 case 0x07:
445 seq_printf(seq, ", Optical Memory Device");
446 break;
447
448 default:
449 seq_printf(seq, ", Unknown (0x%02x)",
450 lct->lct_entry[i].sub_class);
451 break;
452 }
453 break;
454
455 case I2O_CLASS_LAN:
456 switch (lct->lct_entry[i].sub_class & 0xFF) {
457 case 0x30:
458 seq_printf(seq, ", Ethernet");
459 break;
460
461 case 0x40:
462 seq_printf(seq, ", 100base VG");
463 break;
464
465 case 0x50:
466 seq_printf(seq, ", IEEE 802.5/Token-Ring");
467 break;
468
469 case 0x60:
470 seq_printf(seq, ", ANSI X3T9.5 FDDI");
471 break;
472
473 case 0x70:
474 seq_printf(seq, ", Fibre Channel");
475 break;
476
477 default:
478 seq_printf(seq, ", Unknown Sub-Class (0x%02x)",
479 lct->lct_entry[i].sub_class & 0xFF);
480 break;
481 }
482 break;
483
484 case I2O_CLASS_SCSI_PERIPHERAL:
485 if (lct->lct_entry[i].sub_class < SCSI_TABLE_SIZE)
486 seq_printf(seq, ", %s",
487 scsi_devices[lct->lct_entry[i].
488 sub_class]);
489 else
490 seq_printf(seq, ", Unknown Device Type");
491 break;
492
493 case I2O_CLASS_BUS_ADAPTER_PORT:
494 if (lct->lct_entry[i].sub_class < BUS_TABLE_SIZE)
495 seq_printf(seq, ", %s",
496 bus_ports[lct->lct_entry[i].
497 sub_class]);
498 else
499 seq_printf(seq, ", Unknown Bus Type");
500 break;
501 }
502 seq_printf(seq, "\n");
503
504 seq_printf(seq, " Local TID : 0x%03x\n",
505 lct->lct_entry[i].tid);
506 seq_printf(seq, " User TID : 0x%03x\n",
507 lct->lct_entry[i].user_tid);
508 seq_printf(seq, " Parent TID : 0x%03x\n",
509 lct->lct_entry[i].parent_tid);
510 seq_printf(seq, " Identity Tag : 0x%x%x%x%x%x%x%x%x\n",
511 lct->lct_entry[i].identity_tag[0],
512 lct->lct_entry[i].identity_tag[1],
513 lct->lct_entry[i].identity_tag[2],
514 lct->lct_entry[i].identity_tag[3],
515 lct->lct_entry[i].identity_tag[4],
516 lct->lct_entry[i].identity_tag[5],
517 lct->lct_entry[i].identity_tag[6],
518 lct->lct_entry[i].identity_tag[7]);
519 seq_printf(seq, " Change Indicator : %0#10x\n",
520 lct->lct_entry[i].change_ind);
521 seq_printf(seq, " Event Capab Mask : %0#10x\n",
522 lct->lct_entry[i].device_flags);
523 }
524
525 return 0;
526}
527
528static int i2o_seq_show_status(struct seq_file *seq, void *v)
529{
530 struct i2o_controller *c = (struct i2o_controller *)seq->private;
531 char prodstr[25];
532 int version;
533 i2o_status_block *sb = c->status_block.virt;
534
535 i2o_status_get(c); // reread the status block
536
537 seq_printf(seq, "Organization ID : %0#6x\n", sb->org_id);
538
539 version = sb->i2o_version;
540
541/* FIXME for Spec 2.0
542 if (version == 0x02) {
543 seq_printf(seq, "Lowest I2O version supported: ");
544 switch(workspace[2]) {
545 case 0x00:
546 seq_printf(seq, "1.0\n");
547 break;
548 case 0x01:
549 seq_printf(seq, "1.5\n");
550 break;
551 case 0x02:
552 seq_printf(seq, "2.0\n");
553 break;
554 }
555
556 seq_printf(seq, "Highest I2O version supported: ");
557 switch(workspace[3]) {
558 case 0x00:
559 seq_printf(seq, "1.0\n");
560 break;
561 case 0x01:
562 seq_printf(seq, "1.5\n");
563 break;
564 case 0x02:
565 seq_printf(seq, "2.0\n");
566 break;
567 }
568 }
569*/
570 seq_printf(seq, "IOP ID : %0#5x\n", sb->iop_id);
571 seq_printf(seq, "Host Unit ID : %0#6x\n", sb->host_unit_id);
572 seq_printf(seq, "Segment Number : %0#5x\n", sb->segment_number);
573
574 seq_printf(seq, "I2O version : ");
575 switch (version) {
576 case 0x00:
577 seq_printf(seq, "1.0\n");
578 break;
579 case 0x01:
580 seq_printf(seq, "1.5\n");
581 break;
582 case 0x02:
583 seq_printf(seq, "2.0\n");
584 break;
585 default:
586 seq_printf(seq, "Unknown version\n");
587 }
588
589 seq_printf(seq, "IOP State : ");
590 switch (sb->iop_state) {
591 case 0x01:
592 seq_printf(seq, "INIT\n");
593 break;
594
595 case 0x02:
596 seq_printf(seq, "RESET\n");
597 break;
598
599 case 0x04:
600 seq_printf(seq, "HOLD\n");
601 break;
602
603 case 0x05:
604 seq_printf(seq, "READY\n");
605 break;
606
607 case 0x08:
608 seq_printf(seq, "OPERATIONAL\n");
609 break;
610
611 case 0x10:
612 seq_printf(seq, "FAILED\n");
613 break;
614
615 case 0x11:
616 seq_printf(seq, "FAULTED\n");
617 break;
618
619 default:
620 seq_printf(seq, "Unknown\n");
621 break;
622 }
623
624 seq_printf(seq, "Messenger Type : ");
625 switch (sb->msg_type) {
626 case 0x00:
627 seq_printf(seq, "Memory mapped\n");
628 break;
629 case 0x01:
630 seq_printf(seq, "Memory mapped only\n");
631 break;
632 case 0x02:
633 seq_printf(seq, "Remote only\n");
634 break;
635 case 0x03:
636 seq_printf(seq, "Memory mapped and remote\n");
637 break;
638 default:
639 seq_printf(seq, "Unknown\n");
640 }
641
642 seq_printf(seq, "Inbound Frame Size : %d bytes\n",
643 sb->inbound_frame_size << 2);
644 seq_printf(seq, "Max Inbound Frames : %d\n",
645 sb->max_inbound_frames);
646 seq_printf(seq, "Current Inbound Frames : %d\n",
647 sb->cur_inbound_frames);
648 seq_printf(seq, "Max Outbound Frames : %d\n",
649 sb->max_outbound_frames);
650
651 /* Spec doesn't say if NULL terminated or not... */
652 memcpy(prodstr, sb->product_id, 24);
653 prodstr[24] = '\0';
654 seq_printf(seq, "Product ID : %s\n", prodstr);
655 seq_printf(seq, "Expected LCT Size : %d bytes\n",
656 sb->expected_lct_size);
657
658 seq_printf(seq, "IOP Capabilities\n");
659 seq_printf(seq, " Context Field Size Support : ");
660 switch (sb->iop_capabilities & 0x0000003) {
661 case 0:
662 seq_printf(seq, "Supports only 32-bit context fields\n");
663 break;
664 case 1:
665 seq_printf(seq, "Supports only 64-bit context fields\n");
666 break;
667 case 2:
668 seq_printf(seq, "Supports 32-bit and 64-bit context fields, "
669 "but not concurrently\n");
670 break;
671 case 3:
672 seq_printf(seq, "Supports 32-bit and 64-bit context fields "
673 "concurrently\n");
674 break;
675 default:
676 seq_printf(seq, "0x%08x\n", sb->iop_capabilities);
677 }
678 seq_printf(seq, " Current Context Field Size : ");
679 switch (sb->iop_capabilities & 0x0000000C) {
680 case 0:
681 seq_printf(seq, "not configured\n");
682 break;
683 case 4:
684 seq_printf(seq, "Supports only 32-bit context fields\n");
685 break;
686 case 8:
687 seq_printf(seq, "Supports only 64-bit context fields\n");
688 break;
689 case 12:
690 seq_printf(seq, "Supports both 32-bit or 64-bit context fields "
691 "concurrently\n");
692 break;
693 default:
694 seq_printf(seq, "\n");
695 }
696 seq_printf(seq, " Inbound Peer Support : %s\n",
697 (sb->
698 iop_capabilities & 0x00000010) ? "Supported" :
699 "Not supported");
700 seq_printf(seq, " Outbound Peer Support : %s\n",
701 (sb->
702 iop_capabilities & 0x00000020) ? "Supported" :
703 "Not supported");
704 seq_printf(seq, " Peer to Peer Support : %s\n",
705 (sb->
706 iop_capabilities & 0x00000040) ? "Supported" :
707 "Not supported");
708
709 seq_printf(seq, "Desired private memory size : %d kB\n",
710 sb->desired_mem_size >> 10);
711 seq_printf(seq, "Allocated private memory size : %d kB\n",
712 sb->current_mem_size >> 10);
713 seq_printf(seq, "Private memory base address : %0#10x\n",
714 sb->current_mem_base);
715 seq_printf(seq, "Desired private I/O size : %d kB\n",
716 sb->desired_io_size >> 10);
717 seq_printf(seq, "Allocated private I/O size : %d kB\n",
718 sb->current_io_size >> 10);
719 seq_printf(seq, "Private I/O base address : %0#10x\n",
720 sb->current_io_base);
721
722 return 0;
723}
724
725static int i2o_seq_show_hw(struct seq_file *seq, void *v)
726{
727 struct i2o_controller *c = (struct i2o_controller *)seq->private;
728 static u32 work32[5];
729 static u8 *work8 = (u8 *) work32;
730 static u16 *work16 = (u16 *) work32;
731 int token;
732 u32 hwcap;
733
734 static char *cpu_table[] = {
735 "Intel 80960 series",
736 "AMD2900 series",
737 "Motorola 68000 series",
738 "ARM series",
739 "MIPS series",
740 "Sparc series",
741 "PowerPC series",
742 "Intel x86 series"
743 };
744
745 token =
746 i2o_parm_field_get(c->exec, 0x0000, -1, &work32, sizeof(work32));
747
748 if (token < 0) {
749 i2o_report_query_status(seq, token, "0x0000 IOP Hardware");
750 return 0;
751 }
752
753 seq_printf(seq, "I2O Vendor ID : %0#6x\n", work16[0]);
754 seq_printf(seq, "Product ID : %0#6x\n", work16[1]);
755 seq_printf(seq, "CPU : ");
756 if (work8[16] > 8)
757 seq_printf(seq, "Unknown\n");
758 else
759 seq_printf(seq, "%s\n", cpu_table[work8[16]]);
760 /* Anyone using ProcessorVersion? */
761
762 seq_printf(seq, "RAM : %dkB\n", work32[1] >> 10);
763 seq_printf(seq, "Non-Volatile Mem : %dkB\n", work32[2] >> 10);
764
765 hwcap = work32[3];
766 seq_printf(seq, "Capabilities : 0x%08x\n", hwcap);
767 seq_printf(seq, " [%s] Self booting\n",
768 (hwcap & 0x00000001) ? "+" : "-");
769 seq_printf(seq, " [%s] Upgradable IRTOS\n",
770 (hwcap & 0x00000002) ? "+" : "-");
771 seq_printf(seq, " [%s] Supports downloading DDMs\n",
772 (hwcap & 0x00000004) ? "+" : "-");
773 seq_printf(seq, " [%s] Supports installing DDMs\n",
774 (hwcap & 0x00000008) ? "+" : "-");
775 seq_printf(seq, " [%s] Battery-backed RAM\n",
776 (hwcap & 0x00000010) ? "+" : "-");
777
778 return 0;
779}
780
781/* Executive group 0003h - Executing DDM List (table) */
782static int i2o_seq_show_ddm_table(struct seq_file *seq, void *v)
783{
784 struct i2o_controller *c = (struct i2o_controller *)seq->private;
785 int token;
786 int i;
787
788 typedef struct _i2o_exec_execute_ddm_table {
789 u16 ddm_tid;
790 u8 module_type;
791 u8 reserved;
792 u16 i2o_vendor_id;
793 u16 module_id;
794 u8 module_name_version[28];
795 u32 data_size;
796 u32 code_size;
797 } i2o_exec_execute_ddm_table;
798
799 struct {
800 u16 result_count;
801 u16 pad;
802 u16 block_size;
803 u8 block_status;
804 u8 error_info_size;
805 u16 row_count;
806 u16 more_flag;
807 i2o_exec_execute_ddm_table ddm_table[I2O_MAX_MODULES];
808 } *result;
809
810 i2o_exec_execute_ddm_table ddm_table;
811
812 result = kmalloc(sizeof(*result), GFP_KERNEL);
813 if (!result)
814 return -ENOMEM;
815
816 token = i2o_parm_table_get(c->exec, I2O_PARAMS_TABLE_GET, 0x0003, -1,
817 NULL, 0, result, sizeof(*result));
818
819 if (token < 0) {
820 i2o_report_query_status(seq, token,
821 "0x0003 Executing DDM List");
822 goto out;
823 }
824
825 seq_printf(seq,
826 "Tid Module_type Vendor Mod_id Module_name Vrs Data_size Code_size\n");
827 ddm_table = result->ddm_table[0];
828
829 for (i = 0; i < result->row_count; ddm_table = result->ddm_table[++i]) {
830 seq_printf(seq, "0x%03x ", ddm_table.ddm_tid & 0xFFF);
831
832 switch (ddm_table.module_type) {
833 case 0x01:
834 seq_printf(seq, "Downloaded DDM ");
835 break;
836 case 0x22:
837 seq_printf(seq, "Embedded DDM ");
838 break;
839 default:
840 seq_printf(seq, " ");
841 }
842
843 seq_printf(seq, "%-#7x", ddm_table.i2o_vendor_id);
844 seq_printf(seq, "%-#8x", ddm_table.module_id);
845 seq_printf(seq, "%-29s",
846 chtostr(ddm_table.module_name_version, 28));
847 seq_printf(seq, "%9d ", ddm_table.data_size);
848 seq_printf(seq, "%8d", ddm_table.code_size);
849
850 seq_printf(seq, "\n");
851 }
852 out:
853 kfree(result);
854 return 0;
855}
856
857/* Executive group 0004h - Driver Store (scalar) */
858static int i2o_seq_show_driver_store(struct seq_file *seq, void *v)
859{
860 struct i2o_controller *c = (struct i2o_controller *)seq->private;
861 u32 work32[8];
862 int token;
863
864 token =
865 i2o_parm_field_get(c->exec, 0x0004, -1, &work32, sizeof(work32));
866 if (token < 0) {
867 i2o_report_query_status(seq, token, "0x0004 Driver Store");
868 return 0;
869 }
870
871 seq_printf(seq, "Module limit : %d\n"
872 "Module count : %d\n"
873 "Current space : %d kB\n"
874 "Free space : %d kB\n",
875 work32[0], work32[1], work32[2] >> 10, work32[3] >> 10);
876
877 return 0;
878}
879
880/* Executive group 0005h - Driver Store Table (table) */
881static int i2o_seq_show_drivers_stored(struct seq_file *seq, void *v)
882{
883 typedef struct _i2o_driver_store {
884 u16 stored_ddm_index;
885 u8 module_type;
886 u8 reserved;
887 u16 i2o_vendor_id;
888 u16 module_id;
889 u8 module_name_version[28];
890 u8 date[8];
891 u32 module_size;
892 u32 mpb_size;
893 u32 module_flags;
894 } i2o_driver_store_table;
895
896 struct i2o_controller *c = (struct i2o_controller *)seq->private;
897 int token;
898 int i;
899
900 typedef struct {
901 u16 result_count;
902 u16 pad;
903 u16 block_size;
904 u8 block_status;
905 u8 error_info_size;
906 u16 row_count;
907 u16 more_flag;
908 i2o_driver_store_table dst[I2O_MAX_MODULES];
909 } i2o_driver_result_table;
910
911 i2o_driver_result_table *result;
912 i2o_driver_store_table *dst;
913
914 result = kmalloc(sizeof(i2o_driver_result_table), GFP_KERNEL);
915 if (result == NULL)
916 return -ENOMEM;
917
918 token = i2o_parm_table_get(c->exec, I2O_PARAMS_TABLE_GET, 0x0005, -1,
919 NULL, 0, result, sizeof(*result));
920
921 if (token < 0) {
922 i2o_report_query_status(seq, token,
923 "0x0005 DRIVER STORE TABLE");
924 kfree(result);
925 return 0;
926 }
927
928 seq_printf(seq,
929 "# Module_type Vendor Mod_id Module_name Vrs"
930 "Date Mod_size Par_size Flags\n");
931 for (i = 0, dst = &result->dst[0]; i < result->row_count;
932 dst = &result->dst[++i]) {
933 seq_printf(seq, "%-3d", dst->stored_ddm_index);
934 switch (dst->module_type) {
935 case 0x01:
936 seq_printf(seq, "Downloaded DDM ");
937 break;
938 case 0x22:
939 seq_printf(seq, "Embedded DDM ");
940 break;
941 default:
942 seq_printf(seq, " ");
943 }
944
945 seq_printf(seq, "%-#7x", dst->i2o_vendor_id);
946 seq_printf(seq, "%-#8x", dst->module_id);
947 seq_printf(seq, "%-29s", chtostr(dst->module_name_version, 28));
948 seq_printf(seq, "%-9s", chtostr(dst->date, 8));
949 seq_printf(seq, "%8d ", dst->module_size);
950 seq_printf(seq, "%8d ", dst->mpb_size);
951 seq_printf(seq, "0x%04x", dst->module_flags);
952 seq_printf(seq, "\n");
953 }
954
955 kfree(result);
956 return 0;
957}
958
959/* Generic group F000h - Params Descriptor (table) */
960static int i2o_seq_show_groups(struct seq_file *seq, void *v)
961{
962 struct i2o_device *d = (struct i2o_device *)seq->private;
963 int token;
964 int i;
965 u8 properties;
966
967 typedef struct _i2o_group_info {
968 u16 group_number;
969 u16 field_count;
970 u16 row_count;
971 u8 properties;
972 u8 reserved;
973 } i2o_group_info;
974
975 struct {
976 u16 result_count;
977 u16 pad;
978 u16 block_size;
979 u8 block_status;
980 u8 error_info_size;
981 u16 row_count;
982 u16 more_flag;
983 i2o_group_info group[256];
984 } *result;
985
986 result = kmalloc(sizeof(*result), GFP_KERNEL);
987 if (!result)
988 return -ENOMEM;
989
990 token = i2o_parm_table_get(d, I2O_PARAMS_TABLE_GET, 0xF000, -1, NULL, 0,
991 result, sizeof(*result));
992
993 if (token < 0) {
994 i2o_report_query_status(seq, token, "0xF000 Params Descriptor");
995 goto out;
996 }
997
998 seq_printf(seq,
999 "# Group FieldCount RowCount Type Add Del Clear\n");
1000
1001 for (i = 0; i < result->row_count; i++) {
1002 seq_printf(seq, "%-3d", i);
1003 seq_printf(seq, "0x%04X ", result->group[i].group_number);
1004 seq_printf(seq, "%10d ", result->group[i].field_count);
1005 seq_printf(seq, "%8d ", result->group[i].row_count);
1006
1007 properties = result->group[i].properties;
1008 if (properties & 0x1)
1009 seq_printf(seq, "Table ");
1010 else
1011 seq_printf(seq, "Scalar ");
1012 if (properties & 0x2)
1013 seq_printf(seq, " + ");
1014 else
1015 seq_printf(seq, " - ");
1016 if (properties & 0x4)
1017 seq_printf(seq, " + ");
1018 else
1019 seq_printf(seq, " - ");
1020 if (properties & 0x8)
1021 seq_printf(seq, " + ");
1022 else
1023 seq_printf(seq, " - ");
1024
1025 seq_printf(seq, "\n");
1026 }
1027
1028 if (result->more_flag)
1029 seq_printf(seq, "There is more...\n");
1030 out:
1031 kfree(result);
1032 return 0;
1033}
1034
1035/* Generic group F001h - Physical Device Table (table) */
1036static int i2o_seq_show_phys_device(struct seq_file *seq, void *v)
1037{
1038 struct i2o_device *d = (struct i2o_device *)seq->private;
1039 int token;
1040 int i;
1041
1042 struct {
1043 u16 result_count;
1044 u16 pad;
1045 u16 block_size;
1046 u8 block_status;
1047 u8 error_info_size;
1048 u16 row_count;
1049 u16 more_flag;
1050 u32 adapter_id[64];
1051 } result;
1052
1053 token = i2o_parm_table_get(d, I2O_PARAMS_TABLE_GET, 0xF001, -1, NULL, 0,
1054 &result, sizeof(result));
1055
1056 if (token < 0) {
1057 i2o_report_query_status(seq, token,
1058 "0xF001 Physical Device Table");
1059 return 0;
1060 }
1061
1062 if (result.row_count)
1063 seq_printf(seq, "# AdapterId\n");
1064
1065 for (i = 0; i < result.row_count; i++) {
1066 seq_printf(seq, "%-2d", i);
1067 seq_printf(seq, "%#7x\n", result.adapter_id[i]);
1068 }
1069
1070 if (result.more_flag)
1071 seq_printf(seq, "There is more...\n");
1072
1073 return 0;
1074}
1075
1076/* Generic group F002h - Claimed Table (table) */
1077static int i2o_seq_show_claimed(struct seq_file *seq, void *v)
1078{
1079 struct i2o_device *d = (struct i2o_device *)seq->private;
1080 int token;
1081 int i;
1082
1083 struct {
1084 u16 result_count;
1085 u16 pad;
1086 u16 block_size;
1087 u8 block_status;
1088 u8 error_info_size;
1089 u16 row_count;
1090 u16 more_flag;
1091 u16 claimed_tid[64];
1092 } result;
1093
1094 token = i2o_parm_table_get(d, I2O_PARAMS_TABLE_GET, 0xF002, -1, NULL, 0,
1095 &result, sizeof(result));
1096
1097 if (token < 0) {
1098 i2o_report_query_status(seq, token, "0xF002 Claimed Table");
1099 return 0;
1100 }
1101
1102 if (result.row_count)
1103 seq_printf(seq, "# ClaimedTid\n");
1104
1105 for (i = 0; i < result.row_count; i++) {
1106 seq_printf(seq, "%-2d", i);
1107 seq_printf(seq, "%#7x\n", result.claimed_tid[i]);
1108 }
1109
1110 if (result.more_flag)
1111 seq_printf(seq, "There is more...\n");
1112
1113 return 0;
1114}
1115
1116/* Generic group F003h - User Table (table) */
1117static int i2o_seq_show_users(struct seq_file *seq, void *v)
1118{
1119 struct i2o_device *d = (struct i2o_device *)seq->private;
1120 int token;
1121 int i;
1122
1123 typedef struct _i2o_user_table {
1124 u16 instance;
1125 u16 user_tid;
1126 u8 claim_type;
1127 u8 reserved1;
1128 u16 reserved2;
1129 } i2o_user_table;
1130
1131 struct {
1132 u16 result_count;
1133 u16 pad;
1134 u16 block_size;
1135 u8 block_status;
1136 u8 error_info_size;
1137 u16 row_count;
1138 u16 more_flag;
1139 i2o_user_table user[64];
1140 } *result;
1141
1142 result = kmalloc(sizeof(*result), GFP_KERNEL);
1143 if (!result)
1144 return -ENOMEM;
1145
1146 token = i2o_parm_table_get(d, I2O_PARAMS_TABLE_GET, 0xF003, -1, NULL, 0,
1147 result, sizeof(*result));
1148
1149 if (token < 0) {
1150 i2o_report_query_status(seq, token, "0xF003 User Table");
1151 goto out;
1152 }
1153
1154 seq_printf(seq, "# Instance UserTid ClaimType\n");
1155
1156 for (i = 0; i < result->row_count; i++) {
1157 seq_printf(seq, "%-3d", i);
1158 seq_printf(seq, "%#8x ", result->user[i].instance);
1159 seq_printf(seq, "%#7x ", result->user[i].user_tid);
1160 seq_printf(seq, "%#9x\n", result->user[i].claim_type);
1161 }
1162
1163 if (result->more_flag)
1164 seq_printf(seq, "There is more...\n");
1165 out:
1166 kfree(result);
1167 return 0;
1168}
1169
1170/* Generic group F005h - Private message extensions (table) (optional) */
1171static int i2o_seq_show_priv_msgs(struct seq_file *seq, void *v)
1172{
1173 struct i2o_device *d = (struct i2o_device *)seq->private;
1174 int token;
1175 int i;
1176
1177 typedef struct _i2o_private {
1178 u16 ext_instance;
1179 u16 organization_id;
1180 u16 x_function_code;
1181 } i2o_private;
1182
1183 struct {
1184 u16 result_count;
1185 u16 pad;
1186 u16 block_size;
1187 u8 block_status;
1188 u8 error_info_size;
1189 u16 row_count;
1190 u16 more_flag;
1191 i2o_private extension[64];
1192 } result;
1193
1194 token = i2o_parm_table_get(d, I2O_PARAMS_TABLE_GET, 0xF000, -1, NULL, 0,
1195 &result, sizeof(result));
1196
1197 if (token < 0) {
1198 i2o_report_query_status(seq, token,
1199 "0xF005 Private Message Extensions (optional)");
1200 return 0;
1201 }
1202
1203 seq_printf(seq, "Instance# OrgId FunctionCode\n");
1204
1205 for (i = 0; i < result.row_count; i++) {
1206 seq_printf(seq, "%0#9x ", result.extension[i].ext_instance);
1207 seq_printf(seq, "%0#6x ", result.extension[i].organization_id);
1208 seq_printf(seq, "%0#6x", result.extension[i].x_function_code);
1209
1210 seq_printf(seq, "\n");
1211 }
1212
1213 if (result.more_flag)
1214 seq_printf(seq, "There is more...\n");
1215
1216 return 0;
1217}
1218
1219/* Generic group F006h - Authorized User Table (table) */
1220static int i2o_seq_show_authorized_users(struct seq_file *seq, void *v)
1221{
1222 struct i2o_device *d = (struct i2o_device *)seq->private;
1223 int token;
1224 int i;
1225
1226 struct {
1227 u16 result_count;
1228 u16 pad;
1229 u16 block_size;
1230 u8 block_status;
1231 u8 error_info_size;
1232 u16 row_count;
1233 u16 more_flag;
1234 u32 alternate_tid[64];
1235 } result;
1236
1237 token = i2o_parm_table_get(d, I2O_PARAMS_TABLE_GET, 0xF006, -1, NULL, 0,
1238 &result, sizeof(result));
1239
1240 if (token < 0) {
1241 i2o_report_query_status(seq, token,
1242 "0xF006 Autohorized User Table");
1243 return 0;
1244 }
1245
1246 if (result.row_count)
1247 seq_printf(seq, "# AlternateTid\n");
1248
1249 for (i = 0; i < result.row_count; i++) {
1250 seq_printf(seq, "%-2d", i);
1251 seq_printf(seq, "%#7x ", result.alternate_tid[i]);
1252 }
1253
1254 if (result.more_flag)
1255 seq_printf(seq, "There is more...\n");
1256
1257 return 0;
1258}
1259
1260/* Generic group F100h - Device Identity (scalar) */
1261static int i2o_seq_show_dev_identity(struct seq_file *seq, void *v)
1262{
1263 struct i2o_device *d = (struct i2o_device *)seq->private;
1264 static u32 work32[128]; // allow for "stuff" + up to 256 byte (max) serial number
1265 // == (allow) 512d bytes (max)
1266 static u16 *work16 = (u16 *) work32;
1267 int token;
1268
1269 token = i2o_parm_field_get(d, 0xF100, -1, &work32, sizeof(work32));
1270
1271 if (token < 0) {
1272 i2o_report_query_status(seq, token, "0xF100 Device Identity");
1273 return 0;
1274 }
1275
1276 seq_printf(seq, "Device Class : %s\n", i2o_get_class_name(work16[0]));
1277 seq_printf(seq, "Owner TID : %0#5x\n", work16[2]);
1278 seq_printf(seq, "Parent TID : %0#5x\n", work16[3]);
1279 seq_printf(seq, "Vendor info : %s\n",
1280 chtostr((u8 *) (work32 + 2), 16));
1281 seq_printf(seq, "Product info : %s\n",
1282 chtostr((u8 *) (work32 + 6), 16));
1283 seq_printf(seq, "Description : %s\n",
1284 chtostr((u8 *) (work32 + 10), 16));
1285 seq_printf(seq, "Product rev. : %s\n",
1286 chtostr((u8 *) (work32 + 14), 8));
1287
1288 seq_printf(seq, "Serial number : ");
1289 print_serial_number(seq, (u8 *) (work32 + 16),
1290 /* allow for SNLen plus
1291 * possible trailing '\0'
1292 */
1293 sizeof(work32) - (16 * sizeof(u32)) - 2);
1294 seq_printf(seq, "\n");
1295
1296 return 0;
1297}
1298
1299static int i2o_seq_show_dev_name(struct seq_file *seq, void *v)
1300{
1301 struct i2o_device *d = (struct i2o_device *)seq->private;
1302
1303 seq_printf(seq, "%s\n", d->device.bus_id);
1304
1305 return 0;
1306}
1307
1308/* Generic group F101h - DDM Identity (scalar) */
1309static int i2o_seq_show_ddm_identity(struct seq_file *seq, void *v)
1310{
1311 struct i2o_device *d = (struct i2o_device *)seq->private;
1312 int token;
1313
1314 struct {
1315 u16 ddm_tid;
1316 u8 module_name[24];
1317 u8 module_rev[8];
1318 u8 sn_format;
1319 u8 serial_number[12];
1320 u8 pad[256]; // allow up to 256 byte (max) serial number
1321 } result;
1322
1323 token = i2o_parm_field_get(d, 0xF101, -1, &result, sizeof(result));
1324
1325 if (token < 0) {
1326 i2o_report_query_status(seq, token, "0xF101 DDM Identity");
1327 return 0;
1328 }
1329
1330 seq_printf(seq, "Registering DDM TID : 0x%03x\n", result.ddm_tid);
1331 seq_printf(seq, "Module name : %s\n",
1332 chtostr(result.module_name, 24));
1333 seq_printf(seq, "Module revision : %s\n",
1334 chtostr(result.module_rev, 8));
1335
1336 seq_printf(seq, "Serial number : ");
1337 print_serial_number(seq, result.serial_number, sizeof(result) - 36);
1338 /* allow for SNLen plus possible trailing '\0' */
1339
1340 seq_printf(seq, "\n");
1341
1342 return 0;
1343}
1344
1345/* Generic group F102h - User Information (scalar) */
1346static int i2o_seq_show_uinfo(struct seq_file *seq, void *v)
1347{
1348 struct i2o_device *d = (struct i2o_device *)seq->private;
1349 int token;
1350
1351 struct {
1352 u8 device_name[64];
1353 u8 service_name[64];
1354 u8 physical_location[64];
1355 u8 instance_number[4];
1356 } result;
1357
1358 token = i2o_parm_field_get(d, 0xF102, -1, &result, sizeof(result));
1359
1360 if (token < 0) {
1361 i2o_report_query_status(seq, token, "0xF102 User Information");
1362 return 0;
1363 }
1364
1365 seq_printf(seq, "Device name : %s\n",
1366 chtostr(result.device_name, 64));
1367 seq_printf(seq, "Service name : %s\n",
1368 chtostr(result.service_name, 64));
1369 seq_printf(seq, "Physical name : %s\n",
1370 chtostr(result.physical_location, 64));
1371 seq_printf(seq, "Instance number : %s\n",
1372 chtostr(result.instance_number, 4));
1373
1374 return 0;
1375}
1376
1377/* Generic group F103h - SGL Operating Limits (scalar) */
1378static int i2o_seq_show_sgl_limits(struct seq_file *seq, void *v)
1379{
1380 struct i2o_device *d = (struct i2o_device *)seq->private;
1381 static u32 work32[12];
1382 static u16 *work16 = (u16 *) work32;
1383 static u8 *work8 = (u8 *) work32;
1384 int token;
1385
1386 token = i2o_parm_field_get(d, 0xF103, -1, &work32, sizeof(work32));
1387
1388 if (token < 0) {
1389 i2o_report_query_status(seq, token,
1390 "0xF103 SGL Operating Limits");
1391 return 0;
1392 }
1393
1394 seq_printf(seq, "SGL chain size : %d\n", work32[0]);
1395 seq_printf(seq, "Max SGL chain size : %d\n", work32[1]);
1396 seq_printf(seq, "SGL chain size target : %d\n", work32[2]);
1397 seq_printf(seq, "SGL frag count : %d\n", work16[6]);
1398 seq_printf(seq, "Max SGL frag count : %d\n", work16[7]);
1399 seq_printf(seq, "SGL frag count target : %d\n", work16[8]);
1400
1401/* FIXME
1402 if (d->i2oversion == 0x02)
1403 {
1404*/
1405 seq_printf(seq, "SGL data alignment : %d\n", work16[8]);
1406 seq_printf(seq, "SGL addr limit : %d\n", work8[20]);
1407 seq_printf(seq, "SGL addr sizes supported : ");
1408 if (work8[21] & 0x01)
1409 seq_printf(seq, "32 bit ");
1410 if (work8[21] & 0x02)
1411 seq_printf(seq, "64 bit ");
1412 if (work8[21] & 0x04)
1413 seq_printf(seq, "96 bit ");
1414 if (work8[21] & 0x08)
1415 seq_printf(seq, "128 bit ");
1416 seq_printf(seq, "\n");
1417/*
1418 }
1419*/
1420
1421 return 0;
1422}
1423
1424/* Generic group F200h - Sensors (scalar) */
1425static int i2o_seq_show_sensors(struct seq_file *seq, void *v)
1426{
1427 struct i2o_device *d = (struct i2o_device *)seq->private;
1428 int token;
1429
1430 struct {
1431 u16 sensor_instance;
1432 u8 component;
1433 u16 component_instance;
1434 u8 sensor_class;
1435 u8 sensor_type;
1436 u8 scaling_exponent;
1437 u32 actual_reading;
1438 u32 minimum_reading;
1439 u32 low2lowcat_treshold;
1440 u32 lowcat2low_treshold;
1441 u32 lowwarn2low_treshold;
1442 u32 low2lowwarn_treshold;
1443 u32 norm2lowwarn_treshold;
1444 u32 lowwarn2norm_treshold;
1445 u32 nominal_reading;
1446 u32 hiwarn2norm_treshold;
1447 u32 norm2hiwarn_treshold;
1448 u32 high2hiwarn_treshold;
1449 u32 hiwarn2high_treshold;
1450 u32 hicat2high_treshold;
1451 u32 hi2hicat_treshold;
1452 u32 maximum_reading;
1453 u8 sensor_state;
1454 u16 event_enable;
1455 } result;
1456
1457 token = i2o_parm_field_get(d, 0xF200, -1, &result, sizeof(result));
1458
1459 if (token < 0) {
1460 i2o_report_query_status(seq, token,
1461 "0xF200 Sensors (optional)");
1462 return 0;
1463 }
1464
1465 seq_printf(seq, "Sensor instance : %d\n", result.sensor_instance);
1466
1467 seq_printf(seq, "Component : %d = ", result.component);
1468 switch (result.component) {
1469 case 0:
1470 seq_printf(seq, "Other");
1471 break;
1472 case 1:
1473 seq_printf(seq, "Planar logic Board");
1474 break;
1475 case 2:
1476 seq_printf(seq, "CPU");
1477 break;
1478 case 3:
1479 seq_printf(seq, "Chassis");
1480 break;
1481 case 4:
1482 seq_printf(seq, "Power Supply");
1483 break;
1484 case 5:
1485 seq_printf(seq, "Storage");
1486 break;
1487 case 6:
1488 seq_printf(seq, "External");
1489 break;
1490 }
1491 seq_printf(seq, "\n");
1492
1493 seq_printf(seq, "Component instance : %d\n",
1494 result.component_instance);
1495 seq_printf(seq, "Sensor class : %s\n",
1496 result.sensor_class ? "Analog" : "Digital");
1497
1498 seq_printf(seq, "Sensor type : %d = ", result.sensor_type);
1499 switch (result.sensor_type) {
1500 case 0:
1501 seq_printf(seq, "Other\n");
1502 break;
1503 case 1:
1504 seq_printf(seq, "Thermal\n");
1505 break;
1506 case 2:
1507 seq_printf(seq, "DC voltage (DC volts)\n");
1508 break;
1509 case 3:
1510 seq_printf(seq, "AC voltage (AC volts)\n");
1511 break;
1512 case 4:
1513 seq_printf(seq, "DC current (DC amps)\n");
1514 break;
1515 case 5:
1516 seq_printf(seq, "AC current (AC volts)\n");
1517 break;
1518 case 6:
1519 seq_printf(seq, "Door open\n");
1520 break;
1521 case 7:
1522 seq_printf(seq, "Fan operational\n");
1523 break;
1524 }
1525
1526 seq_printf(seq, "Scaling exponent : %d\n",
1527 result.scaling_exponent);
1528 seq_printf(seq, "Actual reading : %d\n", result.actual_reading);
1529 seq_printf(seq, "Minimum reading : %d\n", result.minimum_reading);
1530 seq_printf(seq, "Low2LowCat treshold : %d\n",
1531 result.low2lowcat_treshold);
1532 seq_printf(seq, "LowCat2Low treshold : %d\n",
1533 result.lowcat2low_treshold);
1534 seq_printf(seq, "LowWarn2Low treshold : %d\n",
1535 result.lowwarn2low_treshold);
1536 seq_printf(seq, "Low2LowWarn treshold : %d\n",
1537 result.low2lowwarn_treshold);
1538 seq_printf(seq, "Norm2LowWarn treshold : %d\n",
1539 result.norm2lowwarn_treshold);
1540 seq_printf(seq, "LowWarn2Norm treshold : %d\n",
1541 result.lowwarn2norm_treshold);
1542 seq_printf(seq, "Nominal reading : %d\n", result.nominal_reading);
1543 seq_printf(seq, "HiWarn2Norm treshold : %d\n",
1544 result.hiwarn2norm_treshold);
1545 seq_printf(seq, "Norm2HiWarn treshold : %d\n",
1546 result.norm2hiwarn_treshold);
1547 seq_printf(seq, "High2HiWarn treshold : %d\n",
1548 result.high2hiwarn_treshold);
1549 seq_printf(seq, "HiWarn2High treshold : %d\n",
1550 result.hiwarn2high_treshold);
1551 seq_printf(seq, "HiCat2High treshold : %d\n",
1552 result.hicat2high_treshold);
1553 seq_printf(seq, "High2HiCat treshold : %d\n",
1554 result.hi2hicat_treshold);
1555 seq_printf(seq, "Maximum reading : %d\n", result.maximum_reading);
1556
1557 seq_printf(seq, "Sensor state : %d = ", result.sensor_state);
1558 switch (result.sensor_state) {
1559 case 0:
1560 seq_printf(seq, "Normal\n");
1561 break;
1562 case 1:
1563 seq_printf(seq, "Abnormal\n");
1564 break;
1565 case 2:
1566 seq_printf(seq, "Unknown\n");
1567 break;
1568 case 3:
1569 seq_printf(seq, "Low Catastrophic (LoCat)\n");
1570 break;
1571 case 4:
1572 seq_printf(seq, "Low (Low)\n");
1573 break;
1574 case 5:
1575 seq_printf(seq, "Low Warning (LoWarn)\n");
1576 break;
1577 case 6:
1578 seq_printf(seq, "High Warning (HiWarn)\n");
1579 break;
1580 case 7:
1581 seq_printf(seq, "High (High)\n");
1582 break;
1583 case 8:
1584 seq_printf(seq, "High Catastrophic (HiCat)\n");
1585 break;
1586 }
1587
1588 seq_printf(seq, "Event_enable : 0x%02X\n", result.event_enable);
1589 seq_printf(seq, " [%s] Operational state change. \n",
1590 (result.event_enable & 0x01) ? "+" : "-");
1591 seq_printf(seq, " [%s] Low catastrophic. \n",
1592 (result.event_enable & 0x02) ? "+" : "-");
1593 seq_printf(seq, " [%s] Low reading. \n",
1594 (result.event_enable & 0x04) ? "+" : "-");
1595 seq_printf(seq, " [%s] Low warning. \n",
1596 (result.event_enable & 0x08) ? "+" : "-");
1597 seq_printf(seq,
1598 " [%s] Change back to normal from out of range state. \n",
1599 (result.event_enable & 0x10) ? "+" : "-");
1600 seq_printf(seq, " [%s] High warning. \n",
1601 (result.event_enable & 0x20) ? "+" : "-");
1602 seq_printf(seq, " [%s] High reading. \n",
1603 (result.event_enable & 0x40) ? "+" : "-");
1604 seq_printf(seq, " [%s] High catastrophic. \n",
1605 (result.event_enable & 0x80) ? "+" : "-");
1606
1607 return 0;
1608}
1609
1610static int i2o_seq_open_hrt(struct inode *inode, struct file *file)
1611{
1612 return single_open(file, i2o_seq_show_hrt, PDE(inode)->data);
1613};
1614
1615static int i2o_seq_open_lct(struct inode *inode, struct file *file)
1616{
1617 return single_open(file, i2o_seq_show_lct, PDE(inode)->data);
1618};
1619
1620static int i2o_seq_open_status(struct inode *inode, struct file *file)
1621{
1622 return single_open(file, i2o_seq_show_status, PDE(inode)->data);
1623};
1624
1625static int i2o_seq_open_hw(struct inode *inode, struct file *file)
1626{
1627 return single_open(file, i2o_seq_show_hw, PDE(inode)->data);
1628};
1629
1630static int i2o_seq_open_ddm_table(struct inode *inode, struct file *file)
1631{
1632 return single_open(file, i2o_seq_show_ddm_table, PDE(inode)->data);
1633};
1634
1635static int i2o_seq_open_driver_store(struct inode *inode, struct file *file)
1636{
1637 return single_open(file, i2o_seq_show_driver_store, PDE(inode)->data);
1638};
1639
1640static int i2o_seq_open_drivers_stored(struct inode *inode, struct file *file)
1641{
1642 return single_open(file, i2o_seq_show_drivers_stored, PDE(inode)->data);
1643};
1644
1645static int i2o_seq_open_groups(struct inode *inode, struct file *file)
1646{
1647 return single_open(file, i2o_seq_show_groups, PDE(inode)->data);
1648};
1649
1650static int i2o_seq_open_phys_device(struct inode *inode, struct file *file)
1651{
1652 return single_open(file, i2o_seq_show_phys_device, PDE(inode)->data);
1653};
1654
1655static int i2o_seq_open_claimed(struct inode *inode, struct file *file)
1656{
1657 return single_open(file, i2o_seq_show_claimed, PDE(inode)->data);
1658};
1659
1660static int i2o_seq_open_users(struct inode *inode, struct file *file)
1661{
1662 return single_open(file, i2o_seq_show_users, PDE(inode)->data);
1663};
1664
1665static int i2o_seq_open_priv_msgs(struct inode *inode, struct file *file)
1666{
1667 return single_open(file, i2o_seq_show_priv_msgs, PDE(inode)->data);
1668};
1669
1670static int i2o_seq_open_authorized_users(struct inode *inode, struct file *file)
1671{
1672 return single_open(file, i2o_seq_show_authorized_users,
1673 PDE(inode)->data);
1674};
1675
1676static int i2o_seq_open_dev_identity(struct inode *inode, struct file *file)
1677{
1678 return single_open(file, i2o_seq_show_dev_identity, PDE(inode)->data);
1679};
1680
1681static int i2o_seq_open_ddm_identity(struct inode *inode, struct file *file)
1682{
1683 return single_open(file, i2o_seq_show_ddm_identity, PDE(inode)->data);
1684};
1685
1686static int i2o_seq_open_uinfo(struct inode *inode, struct file *file)
1687{
1688 return single_open(file, i2o_seq_show_uinfo, PDE(inode)->data);
1689};
1690
1691static int i2o_seq_open_sgl_limits(struct inode *inode, struct file *file)
1692{
1693 return single_open(file, i2o_seq_show_sgl_limits, PDE(inode)->data);
1694};
1695
1696static int i2o_seq_open_sensors(struct inode *inode, struct file *file)
1697{
1698 return single_open(file, i2o_seq_show_sensors, PDE(inode)->data);
1699};
1700
1701static int i2o_seq_open_dev_name(struct inode *inode, struct file *file)
1702{
1703 return single_open(file, i2o_seq_show_dev_name, PDE(inode)->data);
1704};
1705
1706static struct file_operations i2o_seq_fops_lct = {
1707 .open = i2o_seq_open_lct,
1708 .read = seq_read,
1709 .llseek = seq_lseek,
1710 .release = single_release,
1711};
1712
1713static struct file_operations i2o_seq_fops_hrt = {
1714 .open = i2o_seq_open_hrt,
1715 .read = seq_read,
1716 .llseek = seq_lseek,
1717 .release = single_release,
1718};
1719
1720static struct file_operations i2o_seq_fops_status = {
1721 .open = i2o_seq_open_status,
1722 .read = seq_read,
1723 .llseek = seq_lseek,
1724 .release = single_release,
1725};
1726
1727static struct file_operations i2o_seq_fops_hw = {
1728 .open = i2o_seq_open_hw,
1729 .read = seq_read,
1730 .llseek = seq_lseek,
1731 .release = single_release,
1732};
1733
1734static struct file_operations i2o_seq_fops_ddm_table = {
1735 .open = i2o_seq_open_ddm_table,
1736 .read = seq_read,
1737 .llseek = seq_lseek,
1738 .release = single_release,
1739};
1740
1741static struct file_operations i2o_seq_fops_driver_store = {
1742 .open = i2o_seq_open_driver_store,
1743 .read = seq_read,
1744 .llseek = seq_lseek,
1745 .release = single_release,
1746};
1747
1748static struct file_operations i2o_seq_fops_drivers_stored = {
1749 .open = i2o_seq_open_drivers_stored,
1750 .read = seq_read,
1751 .llseek = seq_lseek,
1752 .release = single_release,
1753};
1754
1755static struct file_operations i2o_seq_fops_groups = {
1756 .open = i2o_seq_open_groups,
1757 .read = seq_read,
1758 .llseek = seq_lseek,
1759 .release = single_release,
1760};
1761
1762static struct file_operations i2o_seq_fops_phys_device = {
1763 .open = i2o_seq_open_phys_device,
1764 .read = seq_read,
1765 .llseek = seq_lseek,
1766 .release = single_release,
1767};
1768
1769static struct file_operations i2o_seq_fops_claimed = {
1770 .open = i2o_seq_open_claimed,
1771 .read = seq_read,
1772 .llseek = seq_lseek,
1773 .release = single_release,
1774};
1775
1776static struct file_operations i2o_seq_fops_users = {
1777 .open = i2o_seq_open_users,
1778 .read = seq_read,
1779 .llseek = seq_lseek,
1780 .release = single_release,
1781};
1782
1783static struct file_operations i2o_seq_fops_priv_msgs = {
1784 .open = i2o_seq_open_priv_msgs,
1785 .read = seq_read,
1786 .llseek = seq_lseek,
1787 .release = single_release,
1788};
1789
1790static struct file_operations i2o_seq_fops_authorized_users = {
1791 .open = i2o_seq_open_authorized_users,
1792 .read = seq_read,
1793 .llseek = seq_lseek,
1794 .release = single_release,
1795};
1796
1797static struct file_operations i2o_seq_fops_dev_name = {
1798 .open = i2o_seq_open_dev_name,
1799 .read = seq_read,
1800 .llseek = seq_lseek,
1801 .release = single_release,
1802};
1803
1804static struct file_operations i2o_seq_fops_dev_identity = {
1805 .open = i2o_seq_open_dev_identity,
1806 .read = seq_read,
1807 .llseek = seq_lseek,
1808 .release = single_release,
1809};
1810
1811static struct file_operations i2o_seq_fops_ddm_identity = {
1812 .open = i2o_seq_open_ddm_identity,
1813 .read = seq_read,
1814 .llseek = seq_lseek,
1815 .release = single_release,
1816};
1817
1818static struct file_operations i2o_seq_fops_uinfo = {
1819 .open = i2o_seq_open_uinfo,
1820 .read = seq_read,
1821 .llseek = seq_lseek,
1822 .release = single_release,
1823};
1824
1825static struct file_operations i2o_seq_fops_sgl_limits = {
1826 .open = i2o_seq_open_sgl_limits,
1827 .read = seq_read,
1828 .llseek = seq_lseek,
1829 .release = single_release,
1830};
1831
1832static struct file_operations i2o_seq_fops_sensors = {
1833 .open = i2o_seq_open_sensors,
1834 .read = seq_read,
1835 .llseek = seq_lseek,
1836 .release = single_release,
1837};
1838
1839/*
1840 * IOP specific entries...write field just in case someone
1841 * ever wants one.
1842 */
1843static i2o_proc_entry i2o_proc_generic_iop_entries[] = {
1844 {"hrt", S_IFREG | S_IRUGO, &i2o_seq_fops_hrt},
1845 {"lct", S_IFREG | S_IRUGO, &i2o_seq_fops_lct},
1846 {"status", S_IFREG | S_IRUGO, &i2o_seq_fops_status},
1847 {"hw", S_IFREG | S_IRUGO, &i2o_seq_fops_hw},
1848 {"ddm_table", S_IFREG | S_IRUGO, &i2o_seq_fops_ddm_table},
1849 {"driver_store", S_IFREG | S_IRUGO, &i2o_seq_fops_driver_store},
1850 {"drivers_stored", S_IFREG | S_IRUGO, &i2o_seq_fops_drivers_stored},
1851 {NULL, 0, NULL}
1852};
1853
1854/*
1855 * Device specific entries
1856 */
1857static i2o_proc_entry generic_dev_entries[] = {
1858 {"groups", S_IFREG | S_IRUGO, &i2o_seq_fops_groups},
1859 {"phys_dev", S_IFREG | S_IRUGO, &i2o_seq_fops_phys_device},
1860 {"claimed", S_IFREG | S_IRUGO, &i2o_seq_fops_claimed},
1861 {"users", S_IFREG | S_IRUGO, &i2o_seq_fops_users},
1862 {"priv_msgs", S_IFREG | S_IRUGO, &i2o_seq_fops_priv_msgs},
1863 {"authorized_users", S_IFREG | S_IRUGO, &i2o_seq_fops_authorized_users},
1864 {"dev_identity", S_IFREG | S_IRUGO, &i2o_seq_fops_dev_identity},
1865 {"ddm_identity", S_IFREG | S_IRUGO, &i2o_seq_fops_ddm_identity},
1866 {"user_info", S_IFREG | S_IRUGO, &i2o_seq_fops_uinfo},
1867 {"sgl_limits", S_IFREG | S_IRUGO, &i2o_seq_fops_sgl_limits},
1868 {"sensors", S_IFREG | S_IRUGO, &i2o_seq_fops_sensors},
1869 {NULL, 0, NULL}
1870};
1871
1872/*
1873 * Storage unit specific entries (SCSI Periph, BS) with device names
1874 */
1875static i2o_proc_entry rbs_dev_entries[] = {
1876 {"dev_name", S_IFREG | S_IRUGO, &i2o_seq_fops_dev_name},
1877 {NULL, 0, NULL}
1878};
1879
1880/**
1881 * i2o_proc_create_entries - Creates proc dir entries
1882 * @dir: proc dir entry under which the entries should be placed
1883 * @i2o_pe: pointer to the entries which should be added
1884 * @data: pointer to I2O controller or device
1885 *
1886 * Create proc dir entries for a I2O controller or I2O device.
1887 *
1888 * Returns 0 on success or negative error code on failure.
1889 */
1890static int i2o_proc_create_entries(struct proc_dir_entry *dir,
1891 i2o_proc_entry * i2o_pe, void *data)
1892{
1893 struct proc_dir_entry *tmp;
1894
1895 while (i2o_pe->name) {
1896 tmp = create_proc_entry(i2o_pe->name, i2o_pe->mode, dir);
1897 if (!tmp)
1898 return -1;
1899
1900 tmp->data = data;
1901 tmp->proc_fops = i2o_pe->fops;
1902
1903 i2o_pe++;
1904 }
1905
1906 return 0;
1907}
1908
1909/**
1910 * i2o_proc_subdir_remove - Remove child entries from a proc entry
1911 * @dir: proc dir entry from which the childs should be removed
1912 *
1913 * Iterate over each i2o proc entry under dir and remove it. If the child
1914 * also has entries, remove them too.
1915 */
1916static void i2o_proc_subdir_remove(struct proc_dir_entry *dir)
1917{
1918 struct proc_dir_entry *pe, *tmp;
1919 pe = dir->subdir;
1920 while (pe) {
1921 tmp = pe->next;
1922 i2o_proc_subdir_remove(pe);
1923 remove_proc_entry(pe->name, dir);
1924 pe = tmp;
1925 }
1926};
1927
1928/**
1929 * i2o_proc_device_add - Add an I2O device to the proc dir
1930 * @dir: proc dir entry to which the device should be added
1931 * @dev: I2O device which should be added
1932 *
1933 * Add an I2O device to the proc dir entry dir and create the entries for
1934 * the device depending on the class of the I2O device.
1935 */
1936static void i2o_proc_device_add(struct proc_dir_entry *dir,
1937 struct i2o_device *dev)
1938{
1939 char buff[10];
1940 struct proc_dir_entry *devdir;
1941 i2o_proc_entry *i2o_pe = NULL;
1942
1943 sprintf(buff, "%03x", dev->lct_data.tid);
1944
1945 osm_debug("adding device /proc/i2o/%s/%s\n", dev->iop->name, buff);
1946
1947 devdir = proc_mkdir(buff, dir);
1948 if (!devdir) {
1949 osm_warn("Could not allocate procdir!\n");
1950 return;
1951 }
1952
1953 devdir->data = dev;
1954
1955 i2o_proc_create_entries(devdir, generic_dev_entries, dev);
1956
1957 /* Inform core that we want updates about this device's status */
1958 switch (dev->lct_data.class_id) {
1959 case I2O_CLASS_SCSI_PERIPHERAL:
1960 case I2O_CLASS_RANDOM_BLOCK_STORAGE:
1961 i2o_pe = rbs_dev_entries;
1962 break;
1963 default:
1964 break;
1965 }
1966 if (i2o_pe)
1967 i2o_proc_create_entries(devdir, i2o_pe, dev);
1968}
1969
1970/**
1971 * i2o_proc_iop_add - Add an I2O controller to the i2o proc tree
1972 * @dir: parent proc dir entry
1973 * @c: I2O controller which should be added
1974 *
1975 * Add the entries to the parent proc dir entry. Also each device is added
1976 * to the controllers proc dir entry.
1977 *
1978 * Returns 0 on success or negative error code on failure.
1979 */
1980static int i2o_proc_iop_add(struct proc_dir_entry *dir,
1981 struct i2o_controller *c)
1982{
1983 struct proc_dir_entry *iopdir;
1984 struct i2o_device *dev;
1985
1986 osm_debug("adding IOP /proc/i2o/%s\n", c->name);
1987
1988 iopdir = proc_mkdir(c->name, dir);
1989 if (!iopdir)
1990 return -1;
1991
1992 iopdir->data = c;
1993
1994 i2o_proc_create_entries(iopdir, i2o_proc_generic_iop_entries, c);
1995
1996 list_for_each_entry(dev, &c->devices, list)
1997 i2o_proc_device_add(iopdir, dev);
1998
1999 return 0;
2000}
2001
2002/**
2003 * i2o_proc_iop_remove - Removes an I2O controller from the i2o proc tree
2004 * @dir: parent proc dir entry
2005 * @c: I2O controller which should be removed
2006 *
2007 * Iterate over each i2o proc entry and search controller c. If it is found
2008 * remove it from the tree.
2009 */
2010static void i2o_proc_iop_remove(struct proc_dir_entry *dir,
2011 struct i2o_controller *c)
2012{
2013 struct proc_dir_entry *pe, *tmp;
2014
2015 pe = dir->subdir;
2016 while (pe) {
2017 tmp = pe->next;
2018 if (pe->data == c) {
2019 i2o_proc_subdir_remove(pe);
2020 remove_proc_entry(pe->name, dir);
2021 }
2022 osm_debug("removing IOP /proc/i2o/%s\n", c->name);
2023 pe = tmp;
2024 }
2025}
2026
2027/**
2028 * i2o_proc_fs_create - Create the i2o proc fs.
2029 *
2030 * Iterate over each I2O controller and create the entries for it.
2031 *
2032 * Returns 0 on success or negative error code on failure.
2033 */
2034static int __init i2o_proc_fs_create(void)
2035{
2036 struct i2o_controller *c;
2037
2038 i2o_proc_dir_root = proc_mkdir("i2o", NULL);
2039 if (!i2o_proc_dir_root)
2040 return -1;
2041
2042 i2o_proc_dir_root->owner = THIS_MODULE;
2043
2044 list_for_each_entry(c, &i2o_controllers, list)
2045 i2o_proc_iop_add(i2o_proc_dir_root, c);
2046
2047 return 0;
2048};
2049
2050/**
2051 * i2o_proc_fs_destroy - Cleanup the all i2o proc entries
2052 *
2053 * Iterate over each I2O controller and remove the entries for it.
2054 *
2055 * Returns 0 on success or negative error code on failure.
2056 */
2057static int __exit i2o_proc_fs_destroy(void)
2058{
2059 struct i2o_controller *c;
2060
2061 list_for_each_entry(c, &i2o_controllers, list)
2062 i2o_proc_iop_remove(i2o_proc_dir_root, c);
2063
2064 remove_proc_entry("i2o", NULL);
2065
2066 return 0;
2067};
2068
2069/**
2070 * i2o_proc_init - Init function for procfs
2071 *
2072 * Registers Proc OSM and creates procfs entries.
2073 *
2074 * Returns 0 on success or negative error code on failure.
2075 */
2076static int __init i2o_proc_init(void)
2077{
2078 int rc;
2079
2080 printk(KERN_INFO OSM_DESCRIPTION " v" OSM_VERSION "\n");
2081
2082 rc = i2o_driver_register(&i2o_proc_driver);
2083 if (rc)
2084 return rc;
2085
2086 rc = i2o_proc_fs_create();
2087 if (rc) {
2088 i2o_driver_unregister(&i2o_proc_driver);
2089 return rc;
2090 }
2091
2092 return 0;
2093};
2094
2095/**
2096 * i2o_proc_exit - Exit function for procfs
2097 *
2098 * Unregisters Proc OSM and removes procfs entries.
2099 */
2100static void __exit i2o_proc_exit(void)
2101{
2102 i2o_driver_unregister(&i2o_proc_driver);
2103 i2o_proc_fs_destroy();
2104};
2105
2106MODULE_AUTHOR("Deepak Saxena");
2107MODULE_LICENSE("GPL");
2108MODULE_DESCRIPTION(OSM_DESCRIPTION);
2109MODULE_VERSION(OSM_VERSION);
2110
2111module_init(i2o_proc_init);
2112module_exit(i2o_proc_exit);
diff --git a/drivers/message/i2o/i2o_scsi.c b/drivers/message/i2o/i2o_scsi.c
new file mode 100644
index 000000000000..43f5875e0be5
--- /dev/null
+++ b/drivers/message/i2o/i2o_scsi.c
@@ -0,0 +1,830 @@
1/*
2 * This program is free software; you can redistribute it and/or modify it
3 * under the terms of the GNU General Public License as published by the
4 * Free Software Foundation; either version 2, or (at your option) any
5 * later version.
6 *
7 * This program is distributed in the hope that it will be useful, but
8 * WITHOUT ANY WARRANTY; without even the implied warranty of
9 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
10 * General Public License for more details.
11 *
12 * For the avoidance of doubt the "preferred form" of this code is one which
13 * is in an open non patent encumbered format. Where cryptographic key signing
14 * forms part of the process of creating an executable the information
15 * including keys needed to generate an equivalently functional executable
16 * are deemed to be part of the source code.
17 *
18 * Complications for I2O scsi
19 *
20 * o Each (bus,lun) is a logical device in I2O. We keep a map
21 * table. We spoof failed selection for unmapped units
22 * o Request sense buffers can come back for free.
23 * o Scatter gather is a bit dynamic. We have to investigate at
24 * setup time.
25 * o Some of our resources are dynamically shared. The i2o core
26 * needs a message reservation protocol to avoid swap v net
27 * deadlocking. We need to back off queue requests.
28 *
29 * In general the firmware wants to help. Where its help isn't performance
30 * useful we just ignore the aid. Its not worth the code in truth.
31 *
32 * Fixes/additions:
33 * Steve Ralston:
34 * Scatter gather now works
35 * Markus Lidel <Markus.Lidel@shadowconnect.com>:
36 * Minor fixes for 2.6.
37 *
38 * To Do:
39 * 64bit cleanups
40 * Fix the resource management problems.
41 */
42
43#include <linux/module.h>
44#include <linux/kernel.h>
45#include <linux/types.h>
46#include <linux/string.h>
47#include <linux/ioport.h>
48#include <linux/jiffies.h>
49#include <linux/interrupt.h>
50#include <linux/timer.h>
51#include <linux/delay.h>
52#include <linux/proc_fs.h>
53#include <linux/prefetch.h>
54#include <linux/pci.h>
55#include <linux/blkdev.h>
56#include <linux/i2o.h>
57
58#include <asm/dma.h>
59#include <asm/system.h>
60#include <asm/io.h>
61#include <asm/atomic.h>
62
63#include <scsi/scsi.h>
64#include <scsi/scsi_host.h>
65#include <scsi/scsi_device.h>
66#include <scsi/scsi_cmnd.h>
67
68#define OSM_NAME "scsi-osm"
69#define OSM_VERSION "$Rev$"
70#define OSM_DESCRIPTION "I2O SCSI Peripheral OSM"
71
72static struct i2o_driver i2o_scsi_driver;
73
74static int i2o_scsi_max_id = 16;
75static int i2o_scsi_max_lun = 8;
76
77struct i2o_scsi_host {
78 struct Scsi_Host *scsi_host; /* pointer to the SCSI host */
79 struct i2o_controller *iop; /* pointer to the I2O controller */
80 struct i2o_device *channel[0]; /* channel->i2o_dev mapping table */
81};
82
83static struct scsi_host_template i2o_scsi_host_template;
84
85#define I2O_SCSI_CAN_QUEUE 4
86
87/* SCSI OSM class handling definition */
88static struct i2o_class_id i2o_scsi_class_id[] = {
89 {I2O_CLASS_SCSI_PERIPHERAL},
90 {I2O_CLASS_END}
91};
92
93static struct i2o_scsi_host *i2o_scsi_host_alloc(struct i2o_controller *c)
94{
95 struct i2o_scsi_host *i2o_shost;
96 struct i2o_device *i2o_dev;
97 struct Scsi_Host *scsi_host;
98 int max_channel = 0;
99 u8 type;
100 int i;
101 size_t size;
102 i2o_status_block *sb;
103
104 list_for_each_entry(i2o_dev, &c->devices, list)
105 if (i2o_dev->lct_data.class_id == I2O_CLASS_BUS_ADAPTER_PORT) {
106 if (i2o_parm_field_get(i2o_dev, 0x0000, 0, &type, 1) || (type == 1)) /* SCSI bus */
107 max_channel++;
108 }
109
110 if (!max_channel) {
111 osm_warn("no channels found on %s\n", c->name);
112 return ERR_PTR(-EFAULT);
113 }
114
115 size = max_channel * sizeof(struct i2o_device *)
116 + sizeof(struct i2o_scsi_host);
117
118 scsi_host = scsi_host_alloc(&i2o_scsi_host_template, size);
119 if (!scsi_host) {
120 osm_warn("Could not allocate SCSI host\n");
121 return ERR_PTR(-ENOMEM);
122 }
123
124 scsi_host->max_channel = max_channel - 1;
125 scsi_host->max_id = i2o_scsi_max_id;
126 scsi_host->max_lun = i2o_scsi_max_lun;
127 scsi_host->this_id = c->unit;
128
129 sb = c->status_block.virt;
130
131 scsi_host->sg_tablesize = (sb->inbound_frame_size -
132 sizeof(struct i2o_message) / 4 - 6) / 2;
133
134 i2o_shost = (struct i2o_scsi_host *)scsi_host->hostdata;
135 i2o_shost->scsi_host = scsi_host;
136 i2o_shost->iop = c;
137
138 i = 0;
139 list_for_each_entry(i2o_dev, &c->devices, list)
140 if (i2o_dev->lct_data.class_id == I2O_CLASS_BUS_ADAPTER_PORT) {
141 if (i2o_parm_field_get(i2o_dev, 0x0000, 0, &type, 1) || (type == 1)) /* only SCSI bus */
142 i2o_shost->channel[i++] = i2o_dev;
143
144 if (i >= max_channel)
145 break;
146 }
147
148 return i2o_shost;
149};
150
151/**
152 * i2o_scsi_get_host - Get an I2O SCSI host
153 * @c: I2O controller to for which to get the SCSI host
154 *
155 * If the I2O controller already exists as SCSI host, the SCSI host
156 * is returned, otherwise the I2O controller is added to the SCSI
157 * core.
158 *
159 * Returns pointer to the I2O SCSI host on success or NULL on failure.
160 */
161static struct i2o_scsi_host *i2o_scsi_get_host(struct i2o_controller *c)
162{
163 return c->driver_data[i2o_scsi_driver.context];
164};
165
166/**
167 * i2o_scsi_remove - Remove I2O device from SCSI core
168 * @dev: device which should be removed
169 *
170 * Removes the I2O device from the SCSI core again.
171 *
172 * Returns 0 on success.
173 */
174static int i2o_scsi_remove(struct device *dev)
175{
176 struct i2o_device *i2o_dev = to_i2o_device(dev);
177 struct i2o_controller *c = i2o_dev->iop;
178 struct i2o_scsi_host *i2o_shost;
179 struct scsi_device *scsi_dev;
180
181 i2o_shost = i2o_scsi_get_host(c);
182
183 shost_for_each_device(scsi_dev, i2o_shost->scsi_host)
184 if (scsi_dev->hostdata == i2o_dev) {
185 scsi_remove_device(scsi_dev);
186 scsi_device_put(scsi_dev);
187 break;
188 }
189
190 return 0;
191};
192
193/**
194 * i2o_scsi_probe - verify if dev is a I2O SCSI device and install it
195 * @dev: device to verify if it is a I2O SCSI device
196 *
197 * Retrieve channel, id and lun for I2O device. If everthing goes well
198 * register the I2O device as SCSI device on the I2O SCSI controller.
199 *
200 * Returns 0 on success or negative error code on failure.
201 */
202static int i2o_scsi_probe(struct device *dev)
203{
204 struct i2o_device *i2o_dev = to_i2o_device(dev);
205 struct i2o_controller *c = i2o_dev->iop;
206 struct i2o_scsi_host *i2o_shost;
207 struct Scsi_Host *scsi_host;
208 struct i2o_device *parent;
209 struct scsi_device *scsi_dev;
210 u32 id;
211 u64 lun;
212 int channel = -1;
213 int i;
214
215 i2o_shost = i2o_scsi_get_host(c);
216 if (!i2o_shost)
217 return -EFAULT;
218
219 scsi_host = i2o_shost->scsi_host;
220
221 if (i2o_parm_field_get(i2o_dev, 0, 3, &id, 4) < 0)
222 return -EFAULT;
223
224 if (id >= scsi_host->max_id) {
225 osm_warn("SCSI device id (%d) >= max_id of I2O host (%d)", id,
226 scsi_host->max_id);
227 return -EFAULT;
228 }
229
230 if (i2o_parm_field_get(i2o_dev, 0, 4, &lun, 8) < 0)
231 return -EFAULT;
232 if (lun >= scsi_host->max_lun) {
233 osm_warn("SCSI device id (%d) >= max_lun of I2O host (%d)",
234 (unsigned int)lun, scsi_host->max_lun);
235 return -EFAULT;
236 }
237
238 parent = i2o_iop_find_device(c, i2o_dev->lct_data.parent_tid);
239 if (!parent) {
240 osm_warn("can not find parent of device %03x\n",
241 i2o_dev->lct_data.tid);
242 return -EFAULT;
243 }
244
245 for (i = 0; i <= i2o_shost->scsi_host->max_channel; i++)
246 if (i2o_shost->channel[i] == parent)
247 channel = i;
248
249 if (channel == -1) {
250 osm_warn("can not find channel of device %03x\n",
251 i2o_dev->lct_data.tid);
252 return -EFAULT;
253 }
254
255 scsi_dev =
256 __scsi_add_device(i2o_shost->scsi_host, channel, id, lun, i2o_dev);
257
258 if (!scsi_dev) {
259 osm_warn("can not add SCSI device %03x\n",
260 i2o_dev->lct_data.tid);
261 return -EFAULT;
262 }
263
264 osm_debug("added new SCSI device %03x (cannel: %d, id: %d, lun: %d)\n",
265 i2o_dev->lct_data.tid, channel, id, (unsigned int)lun);
266
267 return 0;
268};
269
270static const char *i2o_scsi_info(struct Scsi_Host *SChost)
271{
272 struct i2o_scsi_host *hostdata;
273 hostdata = (struct i2o_scsi_host *)SChost->hostdata;
274 return hostdata->iop->name;
275}
276
277/**
278 * i2o_scsi_reply - SCSI OSM message reply handler
279 * @c: controller issuing the reply
280 * @m: message id for flushing
281 * @msg: the message from the controller
282 *
283 * Process reply messages (interrupts in normal scsi controller think).
284 * We can get a variety of messages to process. The normal path is
285 * scsi command completions. We must also deal with IOP failures,
286 * the reply to a bus reset and the reply to a LUN query.
287 *
288 * Returns 0 on success and if the reply should not be flushed or > 0
289 * on success and if the reply should be flushed. Returns negative error
290 * code on failure and if the reply should be flushed.
291 */
292static int i2o_scsi_reply(struct i2o_controller *c, u32 m,
293 struct i2o_message *msg)
294{
295 struct scsi_cmnd *cmd;
296 struct device *dev;
297 u8 as, ds, st;
298
299 cmd = i2o_cntxt_list_get(c, le32_to_cpu(msg->u.s.tcntxt));
300
301 if (msg->u.head[0] & (1 << 13)) {
302 struct i2o_message __iomem *pmsg; /* preserved message */
303 u32 pm;
304 int err = DID_ERROR;
305
306 pm = le32_to_cpu(msg->body[3]);
307
308 pmsg = i2o_msg_in_to_virt(c, pm);
309
310 osm_err("IOP fail.\n");
311 osm_err("From %d To %d Cmd %d.\n",
312 (msg->u.head[1] >> 12) & 0xFFF,
313 msg->u.head[1] & 0xFFF, msg->u.head[1] >> 24);
314 osm_err("Failure Code %d.\n", msg->body[0] >> 24);
315 if (msg->body[0] & (1 << 16))
316 osm_err("Format error.\n");
317 if (msg->body[0] & (1 << 17))
318 osm_err("Path error.\n");
319 if (msg->body[0] & (1 << 18))
320 osm_err("Path State.\n");
321 if (msg->body[0] & (1 << 18))
322 {
323 osm_err("Congestion.\n");
324 err = DID_BUS_BUSY;
325 }
326
327 osm_debug("Failing message is %p.\n", pmsg);
328
329 cmd = i2o_cntxt_list_get(c, readl(&pmsg->u.s.tcntxt));
330 if (!cmd)
331 return 1;
332
333 cmd->result = err << 16;
334 cmd->scsi_done(cmd);
335
336 /* Now flush the message by making it a NOP */
337 i2o_msg_nop(c, pm);
338
339 return 1;
340 }
341
342 /*
343 * Low byte is device status, next is adapter status,
344 * (then one byte reserved), then request status.
345 */
346 ds = (u8) le32_to_cpu(msg->body[0]);
347 as = (u8) (le32_to_cpu(msg->body[0]) >> 8);
348 st = (u8) (le32_to_cpu(msg->body[0]) >> 24);
349
350 /*
351 * Is this a control request coming back - eg an abort ?
352 */
353
354 if (!cmd) {
355 if (st)
356 osm_warn("SCSI abort: %08X", le32_to_cpu(msg->body[0]));
357 osm_info("SCSI abort completed.\n");
358 return -EFAULT;
359 }
360
361 osm_debug("Completed %ld\n", cmd->serial_number);
362
363 if (st) {
364 u32 count, error;
365 /* An error has occurred */
366
367 switch (st) {
368 case 0x06:
369 count = le32_to_cpu(msg->body[1]);
370 if (count < cmd->underflow) {
371 int i;
372
373 osm_err("SCSI underflow 0x%08X 0x%08X\n", count,
374 cmd->underflow);
375 osm_debug("Cmd: ");
376 for (i = 0; i < 15; i++)
377 pr_debug("%02X ", cmd->cmnd[i]);
378 pr_debug(".\n");
379 cmd->result = (DID_ERROR << 16);
380 }
381 break;
382
383 default:
384 error = le32_to_cpu(msg->body[0]);
385
386 osm_err("SCSI error %08x\n", error);
387
388 if ((error & 0xff) == 0x02 /*CHECK_CONDITION */ ) {
389 int i;
390 u32 len = sizeof(cmd->sense_buffer);
391 len = (len > 40) ? 40 : len;
392 // Copy over the sense data
393 memcpy(cmd->sense_buffer, (void *)&msg->body[3],
394 len);
395 for (i = 0; i <= len; i++)
396 osm_info("%02x\n",
397 cmd->sense_buffer[i]);
398 if (cmd->sense_buffer[0] == 0x70
399 && cmd->sense_buffer[2] == DATA_PROTECT) {
400 /* This is to handle an array failed */
401 cmd->result = (DID_TIME_OUT << 16);
402 printk(KERN_WARNING "%s: SCSI Data "
403 "Protect-Device (%d,%d,%d) "
404 "hba_status=0x%x, dev_status="
405 "0x%x, cmd=0x%x\n", c->name,
406 (u32) cmd->device->channel,
407 (u32) cmd->device->id,
408 (u32) cmd->device->lun,
409 (error >> 8) & 0xff,
410 error & 0xff, cmd->cmnd[0]);
411 } else
412 cmd->result = (DID_ERROR << 16);
413
414 break;
415 }
416
417 switch (as) {
418 case 0x0E:
419 /* SCSI Reset */
420 cmd->result = DID_RESET << 16;
421 break;
422
423 case 0x0F:
424 cmd->result = DID_PARITY << 16;
425 break;
426
427 default:
428 cmd->result = DID_ERROR << 16;
429 break;
430 }
431
432 break;
433 }
434
435 cmd->scsi_done(cmd);
436 return 1;
437 }
438
439 cmd->result = DID_OK << 16 | ds;
440
441 cmd->scsi_done(cmd);
442
443 dev = &c->pdev->dev;
444 if (cmd->use_sg)
445 dma_unmap_sg(dev, (struct scatterlist *)cmd->buffer,
446 cmd->use_sg, cmd->sc_data_direction);
447 else if (cmd->request_bufflen)
448 dma_unmap_single(dev, (dma_addr_t) ((long)cmd->SCp.ptr),
449 cmd->request_bufflen, cmd->sc_data_direction);
450
451 return 1;
452};
453
454/**
455 * i2o_scsi_notify_controller_add - Retrieve notifications of added
456 * controllers
457 * @c: the controller which was added
458 *
459 * If a I2O controller is added, we catch the notification to add a
460 * corresponding Scsi_Host.
461 */
462static void i2o_scsi_notify_controller_add(struct i2o_controller *c)
463{
464 struct i2o_scsi_host *i2o_shost;
465 int rc;
466
467 i2o_shost = i2o_scsi_host_alloc(c);
468 if (IS_ERR(i2o_shost)) {
469 osm_err("Could not initialize SCSI host\n");
470 return;
471 }
472
473 rc = scsi_add_host(i2o_shost->scsi_host, &c->device);
474 if (rc) {
475 osm_err("Could not add SCSI host\n");
476 scsi_host_put(i2o_shost->scsi_host);
477 return;
478 }
479
480 c->driver_data[i2o_scsi_driver.context] = i2o_shost;
481
482 osm_debug("new I2O SCSI host added\n");
483};
484
485/**
486 * i2o_scsi_notify_controller_remove - Retrieve notifications of removed
487 * controllers
488 * @c: the controller which was removed
489 *
490 * If a I2O controller is removed, we catch the notification to remove the
491 * corresponding Scsi_Host.
492 */
493static void i2o_scsi_notify_controller_remove(struct i2o_controller *c)
494{
495 struct i2o_scsi_host *i2o_shost;
496 i2o_shost = i2o_scsi_get_host(c);
497 if (!i2o_shost)
498 return;
499
500 c->driver_data[i2o_scsi_driver.context] = NULL;
501
502 scsi_remove_host(i2o_shost->scsi_host);
503 scsi_host_put(i2o_shost->scsi_host);
504 pr_info("I2O SCSI host removed\n");
505};
506
507/* SCSI OSM driver struct */
508static struct i2o_driver i2o_scsi_driver = {
509 .name = OSM_NAME,
510 .reply = i2o_scsi_reply,
511 .classes = i2o_scsi_class_id,
512 .notify_controller_add = i2o_scsi_notify_controller_add,
513 .notify_controller_remove = i2o_scsi_notify_controller_remove,
514 .driver = {
515 .probe = i2o_scsi_probe,
516 .remove = i2o_scsi_remove,
517 },
518};
519
520/**
521 * i2o_scsi_queuecommand - queue a SCSI command
522 * @SCpnt: scsi command pointer
523 * @done: callback for completion
524 *
525 * Issue a scsi command asynchronously. Return 0 on success or 1 if
526 * we hit an error (normally message queue congestion). The only
527 * minor complication here is that I2O deals with the device addressing
528 * so we have to map the bus/dev/lun back to an I2O handle as well
529 * as faking absent devices ourself.
530 *
531 * Locks: takes the controller lock on error path only
532 */
533
534static int i2o_scsi_queuecommand(struct scsi_cmnd *SCpnt,
535 void (*done) (struct scsi_cmnd *))
536{
537 struct i2o_controller *c;
538 struct Scsi_Host *host;
539 struct i2o_device *i2o_dev;
540 struct device *dev;
541 int tid;
542 struct i2o_message __iomem *msg;
543 u32 m;
544 u32 scsi_flags, sg_flags;
545 u32 __iomem *mptr;
546 u32 __iomem *lenptr;
547 u32 len, reqlen;
548 int i;
549
550 /*
551 * Do the incoming paperwork
552 */
553
554 i2o_dev = SCpnt->device->hostdata;
555 host = SCpnt->device->host;
556 c = i2o_dev->iop;
557 dev = &c->pdev->dev;
558
559 SCpnt->scsi_done = done;
560
561 if (unlikely(!i2o_dev)) {
562 osm_warn("no I2O device in request\n");
563 SCpnt->result = DID_NO_CONNECT << 16;
564 done(SCpnt);
565 return 0;
566 }
567
568 tid = i2o_dev->lct_data.tid;
569
570 osm_debug("qcmd: Tid = %03x\n", tid);
571 osm_debug("Real scsi messages.\n");
572
573 /*
574 * Obtain an I2O message. If there are none free then
575 * throw it back to the scsi layer
576 */
577
578 m = i2o_msg_get_wait(c, &msg, I2O_TIMEOUT_MESSAGE_GET);
579 if (m == I2O_QUEUE_EMPTY)
580 return SCSI_MLQUEUE_HOST_BUSY;
581
582 /*
583 * Put together a scsi execscb message
584 */
585
586 len = SCpnt->request_bufflen;
587
588 switch (SCpnt->sc_data_direction) {
589 case PCI_DMA_NONE:
590 scsi_flags = 0x00000000; // DATA NO XFER
591 sg_flags = 0x00000000;
592 break;
593
594 case PCI_DMA_TODEVICE:
595 scsi_flags = 0x80000000; // DATA OUT (iop-->dev)
596 sg_flags = 0x14000000;
597 break;
598
599 case PCI_DMA_FROMDEVICE:
600 scsi_flags = 0x40000000; // DATA IN (iop<--dev)
601 sg_flags = 0x10000000;
602 break;
603
604 default:
605 /* Unknown - kill the command */
606 SCpnt->result = DID_NO_CONNECT << 16;
607 done(SCpnt);
608 return 0;
609 }
610
611 writel(I2O_CMD_SCSI_EXEC << 24 | HOST_TID << 12 | tid, &msg->u.head[1]);
612 writel(i2o_scsi_driver.context, &msg->u.s.icntxt);
613
614 /* We want the SCSI control block back */
615 writel(i2o_cntxt_list_add(c, SCpnt), &msg->u.s.tcntxt);
616
617 /* LSI_920_PCI_QUIRK
618 *
619 * Intermittant observations of msg frame word data corruption
620 * observed on msg[4] after:
621 * WRITE, READ-MODIFY-WRITE
622 * operations. 19990606 -sralston
623 *
624 * (Hence we build this word via tag. Its good practice anyway
625 * we don't want fetches over PCI needlessly)
626 */
627
628 /* Attach tags to the devices */
629 /*
630 if(SCpnt->device->tagged_supported) {
631 if(SCpnt->tag == HEAD_OF_QUEUE_TAG)
632 scsi_flags |= 0x01000000;
633 else if(SCpnt->tag == ORDERED_QUEUE_TAG)
634 scsi_flags |= 0x01800000;
635 }
636 */
637
638 /* Direction, disconnect ok, tag, CDBLen */
639 writel(scsi_flags | 0x20200000 | SCpnt->cmd_len, &msg->body[0]);
640
641 mptr = &msg->body[1];
642
643 /* Write SCSI command into the message - always 16 byte block */
644 memcpy_toio(mptr, SCpnt->cmnd, 16);
645 mptr += 4;
646 lenptr = mptr++; /* Remember me - fill in when we know */
647
648 reqlen = 12; // SINGLE SGE
649
650 /* Now fill in the SGList and command */
651 if (SCpnt->use_sg) {
652 struct scatterlist *sg;
653 int sg_count;
654
655 sg = SCpnt->request_buffer;
656 len = 0;
657
658 sg_count = dma_map_sg(dev, sg, SCpnt->use_sg,
659 SCpnt->sc_data_direction);
660
661 if (unlikely(sg_count <= 0))
662 return -ENOMEM;
663
664 for (i = SCpnt->use_sg; i > 0; i--) {
665 if (i == 1)
666 sg_flags |= 0xC0000000;
667 writel(sg_flags | sg_dma_len(sg), mptr++);
668 writel(sg_dma_address(sg), mptr++);
669 len += sg_dma_len(sg);
670 sg++;
671 }
672
673 reqlen = mptr - &msg->u.head[0];
674 writel(len, lenptr);
675 } else {
676 len = SCpnt->request_bufflen;
677
678 writel(len, lenptr);
679
680 if (len > 0) {
681 dma_addr_t dma_addr;
682
683 dma_addr = dma_map_single(dev, SCpnt->request_buffer,
684 SCpnt->request_bufflen,
685 SCpnt->sc_data_direction);
686 if (!dma_addr)
687 return -ENOMEM;
688
689 SCpnt->SCp.ptr = (void *)(unsigned long)dma_addr;
690 sg_flags |= 0xC0000000;
691 writel(sg_flags | SCpnt->request_bufflen, mptr++);
692 writel(dma_addr, mptr++);
693 } else
694 reqlen = 9;
695 }
696
697 /* Stick the headers on */
698 writel(reqlen << 16 | SGL_OFFSET_10, &msg->u.head[0]);
699
700 /* Queue the message */
701 i2o_msg_post(c, m);
702
703 osm_debug("Issued %ld\n", SCpnt->serial_number);
704
705 return 0;
706};
707
708/**
709 * i2o_scsi_abort - abort a running command
710 * @SCpnt: command to abort
711 *
712 * Ask the I2O controller to abort a command. This is an asynchrnous
713 * process and our callback handler will see the command complete with an
714 * aborted message if it succeeds.
715 *
716 * Returns 0 if the command is successfully aborted or negative error code
717 * on failure.
718 */
719static int i2o_scsi_abort(struct scsi_cmnd *SCpnt)
720{
721 struct i2o_device *i2o_dev;
722 struct i2o_controller *c;
723 struct i2o_message __iomem *msg;
724 u32 m;
725 int tid;
726 int status = FAILED;
727
728 osm_warn("Aborting command block.\n");
729
730 i2o_dev = SCpnt->device->hostdata;
731 c = i2o_dev->iop;
732 tid = i2o_dev->lct_data.tid;
733
734 m = i2o_msg_get_wait(c, &msg, I2O_TIMEOUT_MESSAGE_GET);
735 if (m == I2O_QUEUE_EMPTY)
736 return SCSI_MLQUEUE_HOST_BUSY;
737
738 writel(FIVE_WORD_MSG_SIZE | SGL_OFFSET_0, &msg->u.head[0]);
739 writel(I2O_CMD_SCSI_ABORT << 24 | HOST_TID << 12 | tid,
740 &msg->u.head[1]);
741 writel(i2o_cntxt_list_get_ptr(c, SCpnt), &msg->body[0]);
742
743 if (i2o_msg_post_wait(c, m, I2O_TIMEOUT_SCSI_SCB_ABORT))
744 status = SUCCESS;
745
746 return status;
747}
748
749/**
750 * i2o_scsi_bios_param - Invent disk geometry
751 * @sdev: scsi device
752 * @dev: block layer device
753 * @capacity: size in sectors
754 * @ip: geometry array
755 *
756 * This is anyones guess quite frankly. We use the same rules everyone
757 * else appears to and hope. It seems to work.
758 */
759
760static int i2o_scsi_bios_param(struct scsi_device *sdev,
761 struct block_device *dev, sector_t capacity,
762 int *ip)
763{
764 int size;
765
766 size = capacity;
767 ip[0] = 64; /* heads */
768 ip[1] = 32; /* sectors */
769 if ((ip[2] = size >> 11) > 1024) { /* cylinders, test for big disk */
770 ip[0] = 255; /* heads */
771 ip[1] = 63; /* sectors */
772 ip[2] = size / (255 * 63); /* cylinders */
773 }
774 return 0;
775}
776
777static struct scsi_host_template i2o_scsi_host_template = {
778 .proc_name = OSM_NAME,
779 .name = OSM_DESCRIPTION,
780 .info = i2o_scsi_info,
781 .queuecommand = i2o_scsi_queuecommand,
782 .eh_abort_handler = i2o_scsi_abort,
783 .bios_param = i2o_scsi_bios_param,
784 .can_queue = I2O_SCSI_CAN_QUEUE,
785 .sg_tablesize = 8,
786 .cmd_per_lun = 6,
787 .use_clustering = ENABLE_CLUSTERING,
788};
789
790/**
791 * i2o_scsi_init - SCSI OSM initialization function
792 *
793 * Register SCSI OSM into I2O core.
794 *
795 * Returns 0 on success or negative error code on failure.
796 */
797static int __init i2o_scsi_init(void)
798{
799 int rc;
800
801 printk(KERN_INFO OSM_DESCRIPTION " v" OSM_VERSION "\n");
802
803 /* Register SCSI OSM into I2O core */
804 rc = i2o_driver_register(&i2o_scsi_driver);
805 if (rc) {
806 osm_err("Could not register SCSI driver\n");
807 return rc;
808 }
809
810 return 0;
811};
812
813/**
814 * i2o_scsi_exit - SCSI OSM exit function
815 *
816 * Unregisters SCSI OSM from I2O core.
817 */
818static void __exit i2o_scsi_exit(void)
819{
820 /* Unregister I2O SCSI OSM from I2O core */
821 i2o_driver_unregister(&i2o_scsi_driver);
822};
823
824MODULE_AUTHOR("Red Hat Software");
825MODULE_LICENSE("GPL");
826MODULE_DESCRIPTION(OSM_DESCRIPTION);
827MODULE_VERSION(OSM_VERSION);
828
829module_init(i2o_scsi_init);
830module_exit(i2o_scsi_exit);
diff --git a/drivers/message/i2o/iop.c b/drivers/message/i2o/iop.c
new file mode 100644
index 000000000000..50c8cedf7a2d
--- /dev/null
+++ b/drivers/message/i2o/iop.c
@@ -0,0 +1,1327 @@
1/*
2 * Functions to handle I2O controllers and I2O message handling
3 *
4 * Copyright (C) 1999-2002 Red Hat Software
5 *
6 * Written by Alan Cox, Building Number Three Ltd
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the
10 * Free Software Foundation; either version 2 of the License, or (at your
11 * option) any later version.
12 *
13 * A lot of the I2O message side code from this is taken from the
14 * Red Creek RCPCI45 adapter driver by Red Creek Communications
15 *
16 * Fixes/additions:
17 * Philipp Rumpf
18 * Juha Sievänen <Juha.Sievanen@cs.Helsinki.FI>
19 * Auvo Häkkinen <Auvo.Hakkinen@cs.Helsinki.FI>
20 * Deepak Saxena <deepak@plexity.net>
21 * Boji T Kannanthanam <boji.t.kannanthanam@intel.com>
22 * Alan Cox <alan@redhat.com>:
23 * Ported to Linux 2.5.
24 * Markus Lidel <Markus.Lidel@shadowconnect.com>:
25 * Minor fixes for 2.6.
26 */
27
28#include <linux/module.h>
29#include <linux/i2o.h>
30#include <linux/delay.h>
31
32#define OSM_VERSION "$Rev$"
33#define OSM_DESCRIPTION "I2O subsystem"
34
35/* global I2O controller list */
36LIST_HEAD(i2o_controllers);
37
38/*
39 * global I2O System Table. Contains information about all the IOPs in the
40 * system. Used to inform IOPs about each others existence.
41 */
42static struct i2o_dma i2o_systab;
43
44static int i2o_hrt_get(struct i2o_controller *c);
45
46/* Module internal functions from other sources */
47extern struct i2o_driver i2o_exec_driver;
48extern int i2o_exec_lct_get(struct i2o_controller *);
49extern void i2o_device_remove(struct i2o_device *);
50
51extern int __init i2o_driver_init(void);
52extern void __exit i2o_driver_exit(void);
53extern int __init i2o_exec_init(void);
54extern void __exit i2o_exec_exit(void);
55extern int __init i2o_pci_init(void);
56extern void __exit i2o_pci_exit(void);
57extern int i2o_device_init(void);
58extern void i2o_device_exit(void);
59
60/**
61 * i2o_msg_nop - Returns a message which is not used
62 * @c: I2O controller from which the message was created
63 * @m: message which should be returned
64 *
65 * If you fetch a message via i2o_msg_get, and can't use it, you must
66 * return the message with this function. Otherwise the message frame
67 * is lost.
68 */
69void i2o_msg_nop(struct i2o_controller *c, u32 m)
70{
71 struct i2o_message __iomem *msg = c->in_queue.virt + m;
72
73 writel(THREE_WORD_MSG_SIZE | SGL_OFFSET_0, &msg->u.head[0]);
74 writel(I2O_CMD_UTIL_NOP << 24 | HOST_TID << 12 | ADAPTER_TID,
75 &msg->u.head[1]);
76 writel(0, &msg->u.head[2]);
77 writel(0, &msg->u.head[3]);
78 i2o_msg_post(c, m);
79};
80
81/**
82 * i2o_msg_get_wait - obtain an I2O message from the IOP
83 * @c: I2O controller
84 * @msg: pointer to a I2O message pointer
85 * @wait: how long to wait until timeout
86 *
87 * This function waits up to wait seconds for a message slot to be
88 * available.
89 *
90 * On a success the message is returned and the pointer to the message is
91 * set in msg. The returned message is the physical page frame offset
92 * address from the read port (see the i2o spec). If no message is
93 * available returns I2O_QUEUE_EMPTY and msg is leaved untouched.
94 */
95u32 i2o_msg_get_wait(struct i2o_controller *c, struct i2o_message __iomem **msg,
96 int wait)
97{
98 unsigned long timeout = jiffies + wait * HZ;
99 u32 m;
100
101 while ((m = i2o_msg_get(c, msg)) == I2O_QUEUE_EMPTY) {
102 if (time_after(jiffies, timeout)) {
103 pr_debug("%s: Timeout waiting for message frame.\n",
104 c->name);
105 return I2O_QUEUE_EMPTY;
106 }
107 set_current_state(TASK_UNINTERRUPTIBLE);
108 schedule_timeout(1);
109 }
110
111 return m;
112};
113
114#if BITS_PER_LONG == 64
115/**
116 * i2o_cntxt_list_add - Append a pointer to context list and return a id
117 * @c: controller to which the context list belong
118 * @ptr: pointer to add to the context list
119 *
120 * Because the context field in I2O is only 32-bit large, on 64-bit the
121 * pointer is to large to fit in the context field. The i2o_cntxt_list
122 * functions therefore map pointers to context fields.
123 *
124 * Returns context id > 0 on success or 0 on failure.
125 */
126u32 i2o_cntxt_list_add(struct i2o_controller * c, void *ptr)
127{
128 struct i2o_context_list_element *entry;
129 unsigned long flags;
130
131 if (!ptr)
132 printk(KERN_ERR "%s: couldn't add NULL pointer to context list!"
133 "\n", c->name);
134
135 entry = kmalloc(sizeof(*entry), GFP_ATOMIC);
136 if (!entry) {
137 printk(KERN_ERR "%s: Could not allocate memory for context "
138 "list element\n", c->name);
139 return 0;
140 }
141
142 entry->ptr = ptr;
143 entry->timestamp = jiffies;
144 INIT_LIST_HEAD(&entry->list);
145
146 spin_lock_irqsave(&c->context_list_lock, flags);
147
148 if (unlikely(atomic_inc_and_test(&c->context_list_counter)))
149 atomic_inc(&c->context_list_counter);
150
151 entry->context = atomic_read(&c->context_list_counter);
152
153 list_add(&entry->list, &c->context_list);
154
155 spin_unlock_irqrestore(&c->context_list_lock, flags);
156
157 pr_debug("%s: Add context to list %p -> %d\n", c->name, ptr, context);
158
159 return entry->context;
160};
161
162/**
163 * i2o_cntxt_list_remove - Remove a pointer from the context list
164 * @c: controller to which the context list belong
165 * @ptr: pointer which should be removed from the context list
166 *
167 * Removes a previously added pointer from the context list and returns
168 * the matching context id.
169 *
170 * Returns context id on succes or 0 on failure.
171 */
172u32 i2o_cntxt_list_remove(struct i2o_controller * c, void *ptr)
173{
174 struct i2o_context_list_element *entry;
175 u32 context = 0;
176 unsigned long flags;
177
178 spin_lock_irqsave(&c->context_list_lock, flags);
179 list_for_each_entry(entry, &c->context_list, list)
180 if (entry->ptr == ptr) {
181 list_del(&entry->list);
182 context = entry->context;
183 kfree(entry);
184 break;
185 }
186 spin_unlock_irqrestore(&c->context_list_lock, flags);
187
188 if (!context)
189 printk(KERN_WARNING "%s: Could not remove nonexistent ptr "
190 "%p\n", c->name, ptr);
191
192 pr_debug("%s: remove ptr from context list %d -> %p\n", c->name,
193 context, ptr);
194
195 return context;
196};
197
198/**
199 * i2o_cntxt_list_get - Get a pointer from the context list and remove it
200 * @c: controller to which the context list belong
201 * @context: context id to which the pointer belong
202 *
203 * Returns pointer to the matching context id on success or NULL on
204 * failure.
205 */
206void *i2o_cntxt_list_get(struct i2o_controller *c, u32 context)
207{
208 struct i2o_context_list_element *entry;
209 unsigned long flags;
210 void *ptr = NULL;
211
212 spin_lock_irqsave(&c->context_list_lock, flags);
213 list_for_each_entry(entry, &c->context_list, list)
214 if (entry->context == context) {
215 list_del(&entry->list);
216 ptr = entry->ptr;
217 kfree(entry);
218 break;
219 }
220 spin_unlock_irqrestore(&c->context_list_lock, flags);
221
222 if (!ptr)
223 printk(KERN_WARNING "%s: context id %d not found\n", c->name,
224 context);
225
226 pr_debug("%s: get ptr from context list %d -> %p\n", c->name, context,
227 ptr);
228
229 return ptr;
230};
231
232/**
233 * i2o_cntxt_list_get_ptr - Get a context id from the context list
234 * @c: controller to which the context list belong
235 * @ptr: pointer to which the context id should be fetched
236 *
237 * Returns context id which matches to the pointer on succes or 0 on
238 * failure.
239 */
240u32 i2o_cntxt_list_get_ptr(struct i2o_controller * c, void *ptr)
241{
242 struct i2o_context_list_element *entry;
243 u32 context = 0;
244 unsigned long flags;
245
246 spin_lock_irqsave(&c->context_list_lock, flags);
247 list_for_each_entry(entry, &c->context_list, list)
248 if (entry->ptr == ptr) {
249 context = entry->context;
250 break;
251 }
252 spin_unlock_irqrestore(&c->context_list_lock, flags);
253
254 if (!context)
255 printk(KERN_WARNING "%s: Could not find nonexistent ptr "
256 "%p\n", c->name, ptr);
257
258 pr_debug("%s: get context id from context list %p -> %d\n", c->name,
259 ptr, context);
260
261 return context;
262};
263#endif
264
265/**
266 * i2o_iop_find - Find an I2O controller by id
267 * @unit: unit number of the I2O controller to search for
268 *
269 * Lookup the I2O controller on the controller list.
270 *
271 * Returns pointer to the I2O controller on success or NULL if not found.
272 */
273struct i2o_controller *i2o_find_iop(int unit)
274{
275 struct i2o_controller *c;
276
277 list_for_each_entry(c, &i2o_controllers, list) {
278 if (c->unit == unit)
279 return c;
280 }
281
282 return NULL;
283};
284
285/**
286 * i2o_iop_find_device - Find a I2O device on an I2O controller
287 * @c: I2O controller where the I2O device hangs on
288 * @tid: TID of the I2O device to search for
289 *
290 * Searches the devices of the I2O controller for a device with TID tid and
291 * returns it.
292 *
293 * Returns a pointer to the I2O device if found, otherwise NULL.
294 */
295struct i2o_device *i2o_iop_find_device(struct i2o_controller *c, u16 tid)
296{
297 struct i2o_device *dev;
298
299 list_for_each_entry(dev, &c->devices, list)
300 if (dev->lct_data.tid == tid)
301 return dev;
302
303 return NULL;
304};
305
306/**
307 * i2o_quiesce_controller - quiesce controller
308 * @c: controller
309 *
310 * Quiesce an IOP. Causes IOP to make external operation quiescent
311 * (i2o 'READY' state). Internal operation of the IOP continues normally.
312 *
313 * Returns 0 on success or negative error code on failure.
314 */
315static int i2o_iop_quiesce(struct i2o_controller *c)
316{
317 struct i2o_message __iomem *msg;
318 u32 m;
319 i2o_status_block *sb = c->status_block.virt;
320 int rc;
321
322 i2o_status_get(c);
323
324 /* SysQuiesce discarded if IOP not in READY or OPERATIONAL state */
325 if ((sb->iop_state != ADAPTER_STATE_READY) &&
326 (sb->iop_state != ADAPTER_STATE_OPERATIONAL))
327 return 0;
328
329 m = i2o_msg_get_wait(c, &msg, I2O_TIMEOUT_MESSAGE_GET);
330 if (m == I2O_QUEUE_EMPTY)
331 return -ETIMEDOUT;
332
333 writel(FOUR_WORD_MSG_SIZE | SGL_OFFSET_0, &msg->u.head[0]);
334 writel(I2O_CMD_SYS_QUIESCE << 24 | HOST_TID << 12 | ADAPTER_TID,
335 &msg->u.head[1]);
336
337 /* Long timeout needed for quiesce if lots of devices */
338 if ((rc = i2o_msg_post_wait(c, m, 240)))
339 printk(KERN_INFO "%s: Unable to quiesce (status=%#x).\n",
340 c->name, -rc);
341 else
342 pr_debug("%s: Quiesced.\n", c->name);
343
344 i2o_status_get(c); // Entered READY state
345
346 return rc;
347};
348
349/**
350 * i2o_iop_enable - move controller from ready to OPERATIONAL
351 * @c: I2O controller
352 *
353 * Enable IOP. This allows the IOP to resume external operations and
354 * reverses the effect of a quiesce. Returns zero or an error code if
355 * an error occurs.
356 */
357static int i2o_iop_enable(struct i2o_controller *c)
358{
359 struct i2o_message __iomem *msg;
360 u32 m;
361 i2o_status_block *sb = c->status_block.virt;
362 int rc;
363
364 i2o_status_get(c);
365
366 /* Enable only allowed on READY state */
367 if (sb->iop_state != ADAPTER_STATE_READY)
368 return -EINVAL;
369
370 m = i2o_msg_get_wait(c, &msg, I2O_TIMEOUT_MESSAGE_GET);
371 if (m == I2O_QUEUE_EMPTY)
372 return -ETIMEDOUT;
373
374 writel(FOUR_WORD_MSG_SIZE | SGL_OFFSET_0, &msg->u.head[0]);
375 writel(I2O_CMD_SYS_ENABLE << 24 | HOST_TID << 12 | ADAPTER_TID,
376 &msg->u.head[1]);
377
378 /* How long of a timeout do we need? */
379 if ((rc = i2o_msg_post_wait(c, m, 240)))
380 printk(KERN_ERR "%s: Could not enable (status=%#x).\n",
381 c->name, -rc);
382 else
383 pr_debug("%s: Enabled.\n", c->name);
384
385 i2o_status_get(c); // entered OPERATIONAL state
386
387 return rc;
388};
389
390/**
391 * i2o_iop_quiesce_all - Quiesce all I2O controllers on the system
392 *
393 * Quiesce all I2O controllers which are connected to the system.
394 */
395static inline void i2o_iop_quiesce_all(void)
396{
397 struct i2o_controller *c, *tmp;
398
399 list_for_each_entry_safe(c, tmp, &i2o_controllers, list) {
400 if (!c->no_quiesce)
401 i2o_iop_quiesce(c);
402 }
403};
404
405/**
406 * i2o_iop_enable_all - Enables all controllers on the system
407 *
408 * Enables all I2O controllers which are connected to the system.
409 */
410static inline void i2o_iop_enable_all(void)
411{
412 struct i2o_controller *c, *tmp;
413
414 list_for_each_entry_safe(c, tmp, &i2o_controllers, list)
415 i2o_iop_enable(c);
416};
417
418/**
419 * i2o_clear_controller - Bring I2O controller into HOLD state
420 * @c: controller
421 *
422 * Clear an IOP to HOLD state, ie. terminate external operations, clear all
423 * input queues and prepare for a system restart. IOP's internal operation
424 * continues normally and the outbound queue is alive. The IOP is not
425 * expected to rebuild its LCT.
426 *
427 * Returns 0 on success or negative error code on failure.
428 */
429static int i2o_iop_clear(struct i2o_controller *c)
430{
431 struct i2o_message __iomem *msg;
432 u32 m;
433 int rc;
434
435 m = i2o_msg_get_wait(c, &msg, I2O_TIMEOUT_MESSAGE_GET);
436 if (m == I2O_QUEUE_EMPTY)
437 return -ETIMEDOUT;
438
439 /* Quiesce all IOPs first */
440 i2o_iop_quiesce_all();
441
442 writel(FOUR_WORD_MSG_SIZE | SGL_OFFSET_0, &msg->u.head[0]);
443 writel(I2O_CMD_ADAPTER_CLEAR << 24 | HOST_TID << 12 | ADAPTER_TID,
444 &msg->u.head[1]);
445
446 if ((rc = i2o_msg_post_wait(c, m, 30)))
447 printk(KERN_INFO "%s: Unable to clear (status=%#x).\n",
448 c->name, -rc);
449 else
450 pr_debug("%s: Cleared.\n", c->name);
451
452 /* Enable all IOPs */
453 i2o_iop_enable_all();
454
455 i2o_status_get(c);
456
457 return rc;
458}
459
460/**
461 * i2o_iop_reset - reset an I2O controller
462 * @c: controller to reset
463 *
464 * Reset the IOP into INIT state and wait until IOP gets into RESET state.
465 * Terminate all external operations, clear IOP's inbound and outbound
466 * queues, terminate all DDMs, and reload the IOP's operating environment
467 * and all local DDMs. The IOP rebuilds its LCT.
468 */
469static int i2o_iop_reset(struct i2o_controller *c)
470{
471 u8 *status = c->status.virt;
472 struct i2o_message __iomem *msg;
473 u32 m;
474 unsigned long timeout;
475 i2o_status_block *sb = c->status_block.virt;
476 int rc = 0;
477
478 pr_debug("%s: Resetting controller\n", c->name);
479
480 m = i2o_msg_get_wait(c, &msg, I2O_TIMEOUT_MESSAGE_GET);
481 if (m == I2O_QUEUE_EMPTY)
482 return -ETIMEDOUT;
483
484 memset(status, 0, 8);
485
486 /* Quiesce all IOPs first */
487 i2o_iop_quiesce_all();
488
489 writel(EIGHT_WORD_MSG_SIZE | SGL_OFFSET_0, &msg->u.head[0]);
490 writel(I2O_CMD_ADAPTER_RESET << 24 | HOST_TID << 12 | ADAPTER_TID,
491 &msg->u.head[1]);
492 writel(i2o_exec_driver.context, &msg->u.s.icntxt);
493 writel(0, &msg->u.s.tcntxt); //FIXME: use reasonable transaction context
494 writel(0, &msg->body[0]);
495 writel(0, &msg->body[1]);
496 writel(i2o_ptr_low((void *)c->status.phys), &msg->body[2]);
497 writel(i2o_ptr_high((void *)c->status.phys), &msg->body[3]);
498
499 i2o_msg_post(c, m);
500
501 /* Wait for a reply */
502 timeout = jiffies + I2O_TIMEOUT_RESET * HZ;
503 while (!*status) {
504 if (time_after(jiffies, timeout)) {
505 printk(KERN_ERR "%s: IOP reset timeout.\n", c->name);
506 rc = -ETIMEDOUT;
507 goto exit;
508 }
509
510 /* Promise bug */
511 if (status[1] || status[4]) {
512 *status = 0;
513 break;
514 }
515
516 set_current_state(TASK_UNINTERRUPTIBLE);
517 schedule_timeout(1);
518
519 rmb();
520 }
521
522 if (*status == I2O_CMD_IN_PROGRESS) {
523 /*
524 * Once the reset is sent, the IOP goes into the INIT state
525 * which is indeterminate. We need to wait until the IOP
526 * has rebooted before we can let the system talk to
527 * it. We read the inbound Free_List until a message is
528 * available. If we can't read one in the given ammount of
529 * time, we assume the IOP could not reboot properly.
530 */
531 pr_debug("%s: Reset in progress, waiting for reboot...\n",
532 c->name);
533
534 m = i2o_msg_get_wait(c, &msg, I2O_TIMEOUT_RESET);
535 while (m == I2O_QUEUE_EMPTY) {
536 if (time_after(jiffies, timeout)) {
537 printk(KERN_ERR "%s: IOP reset timeout.\n",
538 c->name);
539 rc = -ETIMEDOUT;
540 goto exit;
541 }
542 set_current_state(TASK_UNINTERRUPTIBLE);
543 schedule_timeout(1);
544
545 m = i2o_msg_get_wait(c, &msg, I2O_TIMEOUT_RESET);
546 }
547 i2o_msg_nop(c, m);
548 }
549
550 /* from here all quiesce commands are safe */
551 c->no_quiesce = 0;
552
553 /* If IopReset was rejected or didn't perform reset, try IopClear */
554 i2o_status_get(c);
555 if (*status == I2O_CMD_REJECTED || sb->iop_state != ADAPTER_STATE_RESET) {
556 printk(KERN_WARNING "%s: Reset rejected, trying to clear\n",
557 c->name);
558 i2o_iop_clear(c);
559 } else
560 pr_debug("%s: Reset completed.\n", c->name);
561
562 exit:
563 /* Enable all IOPs */
564 i2o_iop_enable_all();
565
566 return rc;
567};
568
569/**
570 * i2o_iop_init_outbound_queue - setup the outbound message queue
571 * @c: I2O controller
572 *
573 * Clear and (re)initialize IOP's outbound queue and post the message
574 * frames to the IOP.
575 *
576 * Returns 0 on success or a negative errno code on failure.
577 */
578static int i2o_iop_init_outbound_queue(struct i2o_controller *c)
579{
580 u8 *status = c->status.virt;
581 u32 m;
582 struct i2o_message __iomem *msg;
583 ulong timeout;
584 int i;
585
586 pr_debug("%s: Initializing Outbound Queue...\n", c->name);
587
588 memset(status, 0, 4);
589
590 m = i2o_msg_get_wait(c, &msg, I2O_TIMEOUT_MESSAGE_GET);
591 if (m == I2O_QUEUE_EMPTY)
592 return -ETIMEDOUT;
593
594 writel(EIGHT_WORD_MSG_SIZE | TRL_OFFSET_6, &msg->u.head[0]);
595 writel(I2O_CMD_OUTBOUND_INIT << 24 | HOST_TID << 12 | ADAPTER_TID,
596 &msg->u.head[1]);
597 writel(i2o_exec_driver.context, &msg->u.s.icntxt);
598 writel(0x0106, &msg->u.s.tcntxt); /* FIXME: why 0x0106, maybe in
599 Spec? */
600 writel(PAGE_SIZE, &msg->body[0]);
601 writel(MSG_FRAME_SIZE << 16 | 0x80, &msg->body[1]); /* Outbound msg frame
602 size in words and Initcode */
603 writel(0xd0000004, &msg->body[2]);
604 writel(i2o_ptr_low((void *)c->status.phys), &msg->body[3]);
605 writel(i2o_ptr_high((void *)c->status.phys), &msg->body[4]);
606
607 i2o_msg_post(c, m);
608
609 timeout = jiffies + I2O_TIMEOUT_INIT_OUTBOUND_QUEUE * HZ;
610 while (*status <= I2O_CMD_IN_PROGRESS) {
611 if (time_after(jiffies, timeout)) {
612 printk(KERN_WARNING "%s: Timeout Initializing\n",
613 c->name);
614 return -ETIMEDOUT;
615 }
616 set_current_state(TASK_UNINTERRUPTIBLE);
617 schedule_timeout(1);
618
619 rmb();
620 }
621
622 m = c->out_queue.phys;
623
624 /* Post frames */
625 for (i = 0; i < NMBR_MSG_FRAMES; i++) {
626 i2o_flush_reply(c, m);
627 udelay(1); /* Promise */
628 m += MSG_FRAME_SIZE * 4;
629 }
630
631 return 0;
632}
633
634/**
635 * i2o_iop_send_nop - send a core NOP message
636 * @c: controller
637 *
638 * Send a no-operation message with a reply set to cause no
639 * action either. Needed for bringing up promise controllers.
640 */
641static int i2o_iop_send_nop(struct i2o_controller *c)
642{
643 struct i2o_message __iomem *msg;
644 u32 m = i2o_msg_get_wait(c, &msg, HZ);
645 if (m == I2O_QUEUE_EMPTY)
646 return -ETIMEDOUT;
647 i2o_msg_nop(c, m);
648 return 0;
649}
650
651/**
652 * i2o_iop_activate - Bring controller up to HOLD
653 * @c: controller
654 *
655 * This function brings an I2O controller into HOLD state. The adapter
656 * is reset if necessary and then the queues and resource table are read.
657 *
658 * Returns 0 on success or negative error code on failure.
659 */
660static int i2o_iop_activate(struct i2o_controller *c)
661{
662 struct pci_dev *i960 = NULL;
663 i2o_status_block *sb = c->status_block.virt;
664 int rc;
665
666 if (c->promise) {
667 /* Beat up the hardware first of all */
668 i960 =
669 pci_find_slot(c->pdev->bus->number,
670 PCI_DEVFN(PCI_SLOT(c->pdev->devfn), 0));
671 if (i960)
672 pci_write_config_word(i960, 0x42, 0);
673
674 /* Follow this sequence precisely or the controller
675 ceases to perform useful functions until reboot */
676 if ((rc = i2o_iop_send_nop(c)))
677 return rc;
678
679 if ((rc = i2o_iop_reset(c)))
680 return rc;
681 }
682
683 /* In INIT state, Wait Inbound Q to initialize (in i2o_status_get) */
684 /* In READY state, Get status */
685
686 rc = i2o_status_get(c);
687 if (rc) {
688 printk(KERN_INFO "%s: Unable to obtain status, "
689 "attempting a reset.\n", c->name);
690 if (i2o_iop_reset(c))
691 return rc;
692 }
693
694 if (sb->i2o_version > I2OVER15) {
695 printk(KERN_ERR "%s: Not running version 1.5 of the I2O "
696 "Specification.\n", c->name);
697 return -ENODEV;
698 }
699
700 switch (sb->iop_state) {
701 case ADAPTER_STATE_FAULTED:
702 printk(KERN_CRIT "%s: hardware fault\n", c->name);
703 return -ENODEV;
704
705 case ADAPTER_STATE_READY:
706 case ADAPTER_STATE_OPERATIONAL:
707 case ADAPTER_STATE_HOLD:
708 case ADAPTER_STATE_FAILED:
709 pr_debug("%s: already running, trying to reset...\n", c->name);
710 if (i2o_iop_reset(c))
711 return -ENODEV;
712 }
713
714 rc = i2o_iop_init_outbound_queue(c);
715 if (rc)
716 return rc;
717
718 if (c->promise) {
719 if ((rc = i2o_iop_send_nop(c)))
720 return rc;
721
722 if ((rc = i2o_status_get(c)))
723 return rc;
724
725 if (i960)
726 pci_write_config_word(i960, 0x42, 0x3FF);
727 }
728
729 /* In HOLD state */
730
731 rc = i2o_hrt_get(c);
732
733 return rc;
734};
735
736/**
737 * i2o_iop_systab_set - Set the I2O System Table of the specified IOP
738 * @c: I2O controller to which the system table should be send
739 *
740 * Before the systab could be set i2o_systab_build() must be called.
741 *
742 * Returns 0 on success or negative error code on failure.
743 */
744static int i2o_iop_systab_set(struct i2o_controller *c)
745{
746 struct i2o_message __iomem *msg;
747 u32 m;
748 i2o_status_block *sb = c->status_block.virt;
749 struct device *dev = &c->pdev->dev;
750 struct resource *root;
751 int rc;
752
753 if (sb->current_mem_size < sb->desired_mem_size) {
754 struct resource *res = &c->mem_resource;
755 res->name = c->pdev->bus->name;
756 res->flags = IORESOURCE_MEM;
757 res->start = 0;
758 res->end = 0;
759 printk(KERN_INFO "%s: requires private memory resources.\n",
760 c->name);
761 root = pci_find_parent_resource(c->pdev, res);
762 if (root == NULL)
763 printk(KERN_WARNING "%s: Can't find parent resource!\n",
764 c->name);
765 if (root && allocate_resource(root, res, sb->desired_mem_size, sb->desired_mem_size, sb->desired_mem_size, 1 << 20, /* Unspecified, so use 1Mb and play safe */
766 NULL, NULL) >= 0) {
767 c->mem_alloc = 1;
768 sb->current_mem_size = 1 + res->end - res->start;
769 sb->current_mem_base = res->start;
770 printk(KERN_INFO "%s: allocated %ld bytes of PCI memory"
771 " at 0x%08lX.\n", c->name,
772 1 + res->end - res->start, res->start);
773 }
774 }
775
776 if (sb->current_io_size < sb->desired_io_size) {
777 struct resource *res = &c->io_resource;
778 res->name = c->pdev->bus->name;
779 res->flags = IORESOURCE_IO;
780 res->start = 0;
781 res->end = 0;
782 printk(KERN_INFO "%s: requires private memory resources.\n",
783 c->name);
784 root = pci_find_parent_resource(c->pdev, res);
785 if (root == NULL)
786 printk(KERN_WARNING "%s: Can't find parent resource!\n",
787 c->name);
788 if (root && allocate_resource(root, res, sb->desired_io_size, sb->desired_io_size, sb->desired_io_size, 1 << 20, /* Unspecified, so use 1Mb and play safe */
789 NULL, NULL) >= 0) {
790 c->io_alloc = 1;
791 sb->current_io_size = 1 + res->end - res->start;
792 sb->current_mem_base = res->start;
793 printk(KERN_INFO "%s: allocated %ld bytes of PCI I/O at"
794 " 0x%08lX.\n", c->name,
795 1 + res->end - res->start, res->start);
796 }
797 }
798
799 m = i2o_msg_get_wait(c, &msg, I2O_TIMEOUT_MESSAGE_GET);
800 if (m == I2O_QUEUE_EMPTY)
801 return -ETIMEDOUT;
802
803 i2o_systab.phys = dma_map_single(dev, i2o_systab.virt, i2o_systab.len,
804 PCI_DMA_TODEVICE);
805 if (!i2o_systab.phys) {
806 i2o_msg_nop(c, m);
807 return -ENOMEM;
808 }
809
810 writel(I2O_MESSAGE_SIZE(12) | SGL_OFFSET_6, &msg->u.head[0]);
811 writel(I2O_CMD_SYS_TAB_SET << 24 | HOST_TID << 12 | ADAPTER_TID,
812 &msg->u.head[1]);
813
814 /*
815 * Provide three SGL-elements:
816 * System table (SysTab), Private memory space declaration and
817 * Private i/o space declaration
818 *
819 * FIXME: is this still true?
820 * Nasty one here. We can't use dma_alloc_coherent to send the
821 * same table to everyone. We have to go remap it for them all
822 */
823
824 writel(c->unit + 2, &msg->body[0]);
825 writel(0, &msg->body[1]);
826 writel(0x54000000 | i2o_systab.len, &msg->body[2]);
827 writel(i2o_systab.phys, &msg->body[3]);
828 writel(0x54000000 | sb->current_mem_size, &msg->body[4]);
829 writel(sb->current_mem_base, &msg->body[5]);
830 writel(0xd4000000 | sb->current_io_size, &msg->body[6]);
831 writel(sb->current_io_base, &msg->body[6]);
832
833 rc = i2o_msg_post_wait(c, m, 120);
834
835 dma_unmap_single(dev, i2o_systab.phys, i2o_systab.len,
836 PCI_DMA_TODEVICE);
837
838 if (rc < 0)
839 printk(KERN_ERR "%s: Unable to set SysTab (status=%#x).\n",
840 c->name, -rc);
841 else
842 pr_debug("%s: SysTab set.\n", c->name);
843
844 i2o_status_get(c); // Entered READY state
845
846 return rc;
847}
848
849/**
850 * i2o_iop_online - Bring a controller online into OPERATIONAL state.
851 * @c: I2O controller
852 *
853 * Send the system table and enable the I2O controller.
854 *
855 * Returns 0 on success or negativer error code on failure.
856 */
857static int i2o_iop_online(struct i2o_controller *c)
858{
859 int rc;
860
861 rc = i2o_iop_systab_set(c);
862 if (rc)
863 return rc;
864
865 /* In READY state */
866 pr_debug("%s: Attempting to enable...\n", c->name);
867 rc = i2o_iop_enable(c);
868 if (rc)
869 return rc;
870
871 return 0;
872};
873
874/**
875 * i2o_iop_remove - Remove the I2O controller from the I2O core
876 * @c: I2O controller
877 *
878 * Remove the I2O controller from the I2O core. If devices are attached to
879 * the controller remove these also and finally reset the controller.
880 */
881void i2o_iop_remove(struct i2o_controller *c)
882{
883 struct i2o_device *dev, *tmp;
884
885 pr_debug("%s: deleting controller\n", c->name);
886
887 i2o_driver_notify_controller_remove_all(c);
888
889 list_del(&c->list);
890
891 list_for_each_entry_safe(dev, tmp, &c->devices, list)
892 i2o_device_remove(dev);
893
894 /* Ask the IOP to switch to RESET state */
895 i2o_iop_reset(c);
896}
897
898/**
899 * i2o_systab_build - Build system table
900 *
901 * The system table contains information about all the IOPs in the system
902 * (duh) and is used by the Executives on the IOPs to establish peer2peer
903 * connections. We're not supporting peer2peer at the moment, but this
904 * will be needed down the road for things like lan2lan forwarding.
905 *
906 * Returns 0 on success or negative error code on failure.
907 */
908static int i2o_systab_build(void)
909{
910 struct i2o_controller *c, *tmp;
911 int num_controllers = 0;
912 u32 change_ind = 0;
913 int count = 0;
914 struct i2o_sys_tbl *systab = i2o_systab.virt;
915
916 list_for_each_entry_safe(c, tmp, &i2o_controllers, list)
917 num_controllers++;
918
919 if (systab) {
920 change_ind = systab->change_ind;
921 kfree(i2o_systab.virt);
922 }
923
924 /* Header + IOPs */
925 i2o_systab.len = sizeof(struct i2o_sys_tbl) + num_controllers *
926 sizeof(struct i2o_sys_tbl_entry);
927
928 systab = i2o_systab.virt = kmalloc(i2o_systab.len, GFP_KERNEL);
929 if (!systab) {
930 printk(KERN_ERR "i2o: unable to allocate memory for System "
931 "Table\n");
932 return -ENOMEM;
933 }
934 memset(systab, 0, i2o_systab.len);
935
936 systab->version = I2OVERSION;
937 systab->change_ind = change_ind + 1;
938
939 list_for_each_entry_safe(c, tmp, &i2o_controllers, list) {
940 i2o_status_block *sb;
941
942 if (count >= num_controllers) {
943 printk(KERN_ERR "i2o: controller added while building "
944 "system table\n");
945 break;
946 }
947
948 sb = c->status_block.virt;
949
950 /*
951 * Get updated IOP state so we have the latest information
952 *
953 * We should delete the controller at this point if it
954 * doesn't respond since if it's not on the system table
955 * it is techninically not part of the I2O subsystem...
956 */
957 if (unlikely(i2o_status_get(c))) {
958 printk(KERN_ERR "%s: Deleting b/c could not get status"
959 " while attempting to build system table\n",
960 c->name);
961 i2o_iop_remove(c);
962 continue; // try the next one
963 }
964
965 systab->iops[count].org_id = sb->org_id;
966 systab->iops[count].iop_id = c->unit + 2;
967 systab->iops[count].seg_num = 0;
968 systab->iops[count].i2o_version = sb->i2o_version;
969 systab->iops[count].iop_state = sb->iop_state;
970 systab->iops[count].msg_type = sb->msg_type;
971 systab->iops[count].frame_size = sb->inbound_frame_size;
972 systab->iops[count].last_changed = change_ind;
973 systab->iops[count].iop_capabilities = sb->iop_capabilities;
974 systab->iops[count].inbound_low = i2o_ptr_low(c->post_port);
975 systab->iops[count].inbound_high = i2o_ptr_high(c->post_port);
976
977 count++;
978 }
979
980 systab->num_entries = count;
981
982 return 0;
983};
984
985/**
986 * i2o_parse_hrt - Parse the hardware resource table.
987 * @c: I2O controller
988 *
989 * We don't do anything with it except dumping it (in debug mode).
990 *
991 * Returns 0.
992 */
993static int i2o_parse_hrt(struct i2o_controller *c)
994{
995 i2o_dump_hrt(c);
996 return 0;
997};
998
999/**
1000 * i2o_status_get - Get the status block from the I2O controller
1001 * @c: I2O controller
1002 *
1003 * Issue a status query on the controller. This updates the attached
1004 * status block. The status block could then be accessed through
1005 * c->status_block.
1006 *
1007 * Returns 0 on sucess or negative error code on failure.
1008 */
1009int i2o_status_get(struct i2o_controller *c)
1010{
1011 struct i2o_message __iomem *msg;
1012 u32 m;
1013 u8 *status_block;
1014 unsigned long timeout;
1015
1016 status_block = (u8 *) c->status_block.virt;
1017 memset(status_block, 0, sizeof(i2o_status_block));
1018
1019 m = i2o_msg_get_wait(c, &msg, I2O_TIMEOUT_MESSAGE_GET);
1020 if (m == I2O_QUEUE_EMPTY)
1021 return -ETIMEDOUT;
1022
1023 writel(NINE_WORD_MSG_SIZE | SGL_OFFSET_0, &msg->u.head[0]);
1024 writel(I2O_CMD_STATUS_GET << 24 | HOST_TID << 12 | ADAPTER_TID,
1025 &msg->u.head[1]);
1026 writel(i2o_exec_driver.context, &msg->u.s.icntxt);
1027 writel(0, &msg->u.s.tcntxt); // FIXME: use resonable transaction context
1028 writel(0, &msg->body[0]);
1029 writel(0, &msg->body[1]);
1030 writel(i2o_ptr_low((void *)c->status_block.phys), &msg->body[2]);
1031 writel(i2o_ptr_high((void *)c->status_block.phys), &msg->body[3]);
1032 writel(sizeof(i2o_status_block), &msg->body[4]); /* always 88 bytes */
1033
1034 i2o_msg_post(c, m);
1035
1036 /* Wait for a reply */
1037 timeout = jiffies + I2O_TIMEOUT_STATUS_GET * HZ;
1038 while (status_block[87] != 0xFF) {
1039 if (time_after(jiffies, timeout)) {
1040 printk(KERN_ERR "%s: Get status timeout.\n", c->name);
1041 return -ETIMEDOUT;
1042 }
1043
1044 set_current_state(TASK_UNINTERRUPTIBLE);
1045 schedule_timeout(1);
1046
1047 rmb();
1048 }
1049
1050#ifdef DEBUG
1051 i2o_debug_state(c);
1052#endif
1053
1054 return 0;
1055}
1056
1057/*
1058 * i2o_hrt_get - Get the Hardware Resource Table from the I2O controller
1059 * @c: I2O controller from which the HRT should be fetched
1060 *
1061 * The HRT contains information about possible hidden devices but is
1062 * mostly useless to us.
1063 *
1064 * Returns 0 on success or negativer error code on failure.
1065 */
1066static int i2o_hrt_get(struct i2o_controller *c)
1067{
1068 int rc;
1069 int i;
1070 i2o_hrt *hrt = c->hrt.virt;
1071 u32 size = sizeof(i2o_hrt);
1072 struct device *dev = &c->pdev->dev;
1073
1074 for (i = 0; i < I2O_HRT_GET_TRIES; i++) {
1075 struct i2o_message __iomem *msg;
1076 u32 m;
1077
1078 m = i2o_msg_get_wait(c, &msg, I2O_TIMEOUT_MESSAGE_GET);
1079 if (m == I2O_QUEUE_EMPTY)
1080 return -ETIMEDOUT;
1081
1082 writel(SIX_WORD_MSG_SIZE | SGL_OFFSET_4, &msg->u.head[0]);
1083 writel(I2O_CMD_HRT_GET << 24 | HOST_TID << 12 | ADAPTER_TID,
1084 &msg->u.head[1]);
1085 writel(0xd0000000 | c->hrt.len, &msg->body[0]);
1086 writel(c->hrt.phys, &msg->body[1]);
1087
1088 rc = i2o_msg_post_wait_mem(c, m, 20, &c->hrt);
1089
1090 if (rc < 0) {
1091 printk(KERN_ERR "%s: Unable to get HRT (status=%#x)\n",
1092 c->name, -rc);
1093 return rc;
1094 }
1095
1096 size = hrt->num_entries * hrt->entry_len << 2;
1097 if (size > c->hrt.len) {
1098 if (i2o_dma_realloc(dev, &c->hrt, size, GFP_KERNEL))
1099 return -ENOMEM;
1100 else
1101 hrt = c->hrt.virt;
1102 } else
1103 return i2o_parse_hrt(c);
1104 }
1105
1106 printk(KERN_ERR "%s: Unable to get HRT after %d tries, giving up\n",
1107 c->name, I2O_HRT_GET_TRIES);
1108
1109 return -EBUSY;
1110}
1111
1112/**
1113 * i2o_iop_alloc - Allocate and initialize a i2o_controller struct
1114 *
1115 * Allocate the necessary memory for a i2o_controller struct and
1116 * initialize the lists.
1117 *
1118 * Returns a pointer to the I2O controller or a negative error code on
1119 * failure.
1120 */
1121struct i2o_controller *i2o_iop_alloc(void)
1122{
1123 static int unit = 0; /* 0 and 1 are NULL IOP and Local Host */
1124 struct i2o_controller *c;
1125
1126 c = kmalloc(sizeof(*c), GFP_KERNEL);
1127 if (!c) {
1128 printk(KERN_ERR "i2o: Insufficient memory to allocate a I2O "
1129 "controller.\n");
1130 return ERR_PTR(-ENOMEM);
1131 }
1132 memset(c, 0, sizeof(*c));
1133
1134 INIT_LIST_HEAD(&c->devices);
1135 spin_lock_init(&c->lock);
1136 init_MUTEX(&c->lct_lock);
1137 c->unit = unit++;
1138 sprintf(c->name, "iop%d", c->unit);
1139
1140#if BITS_PER_LONG == 64
1141 spin_lock_init(&c->context_list_lock);
1142 atomic_set(&c->context_list_counter, 0);
1143 INIT_LIST_HEAD(&c->context_list);
1144#endif
1145
1146 return c;
1147};
1148
1149/**
1150 * i2o_iop_free - Free the i2o_controller struct
1151 * @c: I2O controller to free
1152 */
1153void i2o_iop_free(struct i2o_controller *c)
1154{
1155 kfree(c);
1156};
1157
1158/**
1159 * i2o_iop_add - Initialize the I2O controller and add him to the I2O core
1160 * @c: controller
1161 *
1162 * Initialize the I2O controller and if no error occurs add him to the I2O
1163 * core.
1164 *
1165 * Returns 0 on success or negative error code on failure.
1166 */
1167int i2o_iop_add(struct i2o_controller *c)
1168{
1169 int rc;
1170
1171 printk(KERN_INFO "%s: Activating I2O controller...\n", c->name);
1172 printk(KERN_INFO "%s: This may take a few minutes if there are many "
1173 "devices\n", c->name);
1174
1175 if ((rc = i2o_iop_activate(c))) {
1176 printk(KERN_ERR "%s: could not activate controller\n",
1177 c->name);
1178 i2o_iop_reset(c);
1179 return rc;
1180 }
1181
1182 pr_debug("%s: building sys table...\n", c->name);
1183
1184 if ((rc = i2o_systab_build())) {
1185 i2o_iop_reset(c);
1186 return rc;
1187 }
1188
1189 pr_debug("%s: online controller...\n", c->name);
1190
1191 if ((rc = i2o_iop_online(c))) {
1192 i2o_iop_reset(c);
1193 return rc;
1194 }
1195
1196 pr_debug("%s: getting LCT...\n", c->name);
1197
1198 if ((rc = i2o_exec_lct_get(c))) {
1199 i2o_iop_reset(c);
1200 return rc;
1201 }
1202
1203 list_add(&c->list, &i2o_controllers);
1204
1205 i2o_driver_notify_controller_add_all(c);
1206
1207 printk(KERN_INFO "%s: Controller added\n", c->name);
1208
1209 return 0;
1210};
1211
1212/**
1213 * i2o_event_register - Turn on/off event notification for a I2O device
1214 * @dev: I2O device which should receive the event registration request
1215 * @drv: driver which want to get notified
1216 * @tcntxt: transaction context to use with this notifier
1217 * @evt_mask: mask of events
1218 *
1219 * Create and posts an event registration message to the task. No reply
1220 * is waited for, or expected. If you do not want further notifications,
1221 * call the i2o_event_register again with a evt_mask of 0.
1222 *
1223 * Returns 0 on success or -ETIMEDOUT if no message could be fetched for
1224 * sending the request.
1225 */
1226int i2o_event_register(struct i2o_device *dev, struct i2o_driver *drv,
1227 int tcntxt, u32 evt_mask)
1228{
1229 struct i2o_controller *c = dev->iop;
1230 struct i2o_message __iomem *msg;
1231 u32 m;
1232
1233 m = i2o_msg_get_wait(c, &msg, I2O_TIMEOUT_MESSAGE_GET);
1234 if (m == I2O_QUEUE_EMPTY)
1235 return -ETIMEDOUT;
1236
1237 writel(FIVE_WORD_MSG_SIZE | SGL_OFFSET_0, &msg->u.head[0]);
1238 writel(I2O_CMD_UTIL_EVT_REGISTER << 24 | HOST_TID << 12 | dev->lct_data.
1239 tid, &msg->u.head[1]);
1240 writel(drv->context, &msg->u.s.icntxt);
1241 writel(tcntxt, &msg->u.s.tcntxt);
1242 writel(evt_mask, &msg->body[0]);
1243
1244 i2o_msg_post(c, m);
1245
1246 return 0;
1247};
1248
1249/**
1250 * i2o_iop_init - I2O main initialization function
1251 *
1252 * Initialize the I2O drivers (OSM) functions, register the Executive OSM,
1253 * initialize the I2O PCI part and finally initialize I2O device stuff.
1254 *
1255 * Returns 0 on success or negative error code on failure.
1256 */
1257static int __init i2o_iop_init(void)
1258{
1259 int rc = 0;
1260
1261 printk(KERN_INFO OSM_DESCRIPTION " v" OSM_VERSION "\n");
1262
1263 rc = i2o_device_init();
1264 if (rc)
1265 goto exit;
1266
1267 rc = i2o_driver_init();
1268 if (rc)
1269 goto device_exit;
1270
1271 rc = i2o_exec_init();
1272 if (rc)
1273 goto driver_exit;
1274
1275 rc = i2o_pci_init();
1276 if (rc < 0)
1277 goto exec_exit;
1278
1279 return 0;
1280
1281 exec_exit:
1282 i2o_exec_exit();
1283
1284 driver_exit:
1285 i2o_driver_exit();
1286
1287 device_exit:
1288 i2o_device_exit();
1289
1290 exit:
1291 return rc;
1292}
1293
1294/**
1295 * i2o_iop_exit - I2O main exit function
1296 *
1297 * Removes I2O controllers from PCI subsystem and shut down OSMs.
1298 */
1299static void __exit i2o_iop_exit(void)
1300{
1301 i2o_pci_exit();
1302 i2o_exec_exit();
1303 i2o_driver_exit();
1304 i2o_device_exit();
1305};
1306
1307module_init(i2o_iop_init);
1308module_exit(i2o_iop_exit);
1309
1310MODULE_AUTHOR("Red Hat Software");
1311MODULE_LICENSE("GPL");
1312MODULE_DESCRIPTION(OSM_DESCRIPTION);
1313MODULE_VERSION(OSM_VERSION);
1314
1315#if BITS_PER_LONG == 64
1316EXPORT_SYMBOL(i2o_cntxt_list_add);
1317EXPORT_SYMBOL(i2o_cntxt_list_get);
1318EXPORT_SYMBOL(i2o_cntxt_list_remove);
1319EXPORT_SYMBOL(i2o_cntxt_list_get_ptr);
1320#endif
1321EXPORT_SYMBOL(i2o_msg_get_wait);
1322EXPORT_SYMBOL(i2o_msg_nop);
1323EXPORT_SYMBOL(i2o_find_iop);
1324EXPORT_SYMBOL(i2o_iop_find_device);
1325EXPORT_SYMBOL(i2o_event_register);
1326EXPORT_SYMBOL(i2o_status_get);
1327EXPORT_SYMBOL(i2o_controllers);
diff --git a/drivers/message/i2o/pci.c b/drivers/message/i2o/pci.c
new file mode 100644
index 000000000000..e772752f056d
--- /dev/null
+++ b/drivers/message/i2o/pci.c
@@ -0,0 +1,528 @@
1/*
2 * PCI handling of I2O controller
3 *
4 * Copyright (C) 1999-2002 Red Hat Software
5 *
6 * Written by Alan Cox, Building Number Three Ltd
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the
10 * Free Software Foundation; either version 2 of the License, or (at your
11 * option) any later version.
12 *
13 * A lot of the I2O message side code from this is taken from the Red
14 * Creek RCPCI45 adapter driver by Red Creek Communications
15 *
16 * Fixes/additions:
17 * Philipp Rumpf
18 * Juha Sievänen <Juha.Sievanen@cs.Helsinki.FI>
19 * Auvo Häkkinen <Auvo.Hakkinen@cs.Helsinki.FI>
20 * Deepak Saxena <deepak@plexity.net>
21 * Boji T Kannanthanam <boji.t.kannanthanam@intel.com>
22 * Alan Cox <alan@redhat.com>:
23 * Ported to Linux 2.5.
24 * Markus Lidel <Markus.Lidel@shadowconnect.com>:
25 * Minor fixes for 2.6.
26 * Markus Lidel <Markus.Lidel@shadowconnect.com>:
27 * Support for sysfs included.
28 */
29
30#include <linux/pci.h>
31#include <linux/interrupt.h>
32#include <linux/i2o.h>
33
34#ifdef CONFIG_MTRR
35#include <asm/mtrr.h>
36#endif // CONFIG_MTRR
37
38/* Module internal functions from other sources */
39extern struct i2o_controller *i2o_iop_alloc(void);
40extern void i2o_iop_free(struct i2o_controller *);
41
42extern int i2o_iop_add(struct i2o_controller *);
43extern void i2o_iop_remove(struct i2o_controller *);
44
45extern int i2o_driver_dispatch(struct i2o_controller *, u32,
46 struct i2o_message *);
47
48/* PCI device id table for all I2O controllers */
49static struct pci_device_id __devinitdata i2o_pci_ids[] = {
50 {PCI_DEVICE_CLASS(PCI_CLASS_INTELLIGENT_I2O << 8, 0xffff00)},
51 {PCI_DEVICE(PCI_VENDOR_ID_DPT, 0xa511)},
52 {0}
53};
54
55/**
56 * i2o_dma_realloc - Realloc DMA memory
57 * @dev: struct device pointer to the PCI device of the I2O controller
58 * @addr: pointer to a i2o_dma struct DMA buffer
59 * @len: new length of memory
60 * @gfp_mask: GFP mask
61 *
62 * If there was something allocated in the addr, free it first. If len > 0
63 * than try to allocate it and write the addresses back to the addr
64 * structure. If len == 0 set the virtual address to NULL.
65 *
66 * Returns the 0 on success or negative error code on failure.
67 */
68int i2o_dma_realloc(struct device *dev, struct i2o_dma *addr, size_t len,
69 unsigned int gfp_mask)
70{
71 i2o_dma_free(dev, addr);
72
73 if (len)
74 return i2o_dma_alloc(dev, addr, len, gfp_mask);
75
76 return 0;
77};
78
79/**
80 * i2o_pci_free - Frees the DMA memory for the I2O controller
81 * @c: I2O controller to free
82 *
83 * Remove all allocated DMA memory and unmap memory IO regions. If MTRR
84 * is enabled, also remove it again.
85 */
86static void i2o_pci_free(struct i2o_controller *c)
87{
88 struct device *dev;
89
90 dev = &c->pdev->dev;
91
92 i2o_dma_free(dev, &c->out_queue);
93 i2o_dma_free(dev, &c->status_block);
94 if (c->lct)
95 kfree(c->lct);
96 i2o_dma_free(dev, &c->dlct);
97 i2o_dma_free(dev, &c->hrt);
98 i2o_dma_free(dev, &c->status);
99
100#ifdef CONFIG_MTRR
101 if (c->mtrr_reg0 >= 0)
102 mtrr_del(c->mtrr_reg0, 0, 0);
103 if (c->mtrr_reg1 >= 0)
104 mtrr_del(c->mtrr_reg1, 0, 0);
105#endif
106
107 if (c->raptor && c->in_queue.virt)
108 iounmap(c->in_queue.virt);
109
110 if (c->base.virt)
111 iounmap(c->base.virt);
112}
113
114/**
115 * i2o_pci_alloc - Allocate DMA memory, map IO memory for I2O controller
116 * @c: I2O controller
117 *
118 * Allocate DMA memory for a PCI (or in theory AGP) I2O controller. All
119 * IO mappings are also done here. If MTRR is enabled, also do add memory
120 * regions here.
121 *
122 * Returns 0 on success or negative error code on failure.
123 */
124static int __devinit i2o_pci_alloc(struct i2o_controller *c)
125{
126 struct pci_dev *pdev = c->pdev;
127 struct device *dev = &pdev->dev;
128 int i;
129
130 for (i = 0; i < 6; i++) {
131 /* Skip I/O spaces */
132 if (!(pci_resource_flags(pdev, i) & IORESOURCE_IO)) {
133 if (!c->base.phys) {
134 c->base.phys = pci_resource_start(pdev, i);
135 c->base.len = pci_resource_len(pdev, i);
136
137 /*
138 * If we know what card it is, set the size
139 * correctly. Code is taken from dpt_i2o.c
140 */
141 if (pdev->device == 0xa501) {
142 if (pdev->subsystem_device >= 0xc032 &&
143 pdev->subsystem_device <= 0xc03b) {
144 if (c->base.len > 0x400000)
145 c->base.len = 0x400000;
146 } else {
147 if (c->base.len > 0x100000)
148 c->base.len = 0x100000;
149 }
150 }
151 if (!c->raptor)
152 break;
153 } else {
154 c->in_queue.phys = pci_resource_start(pdev, i);
155 c->in_queue.len = pci_resource_len(pdev, i);
156 break;
157 }
158 }
159 }
160
161 if (i == 6) {
162 printk(KERN_ERR "%s: I2O controller has no memory regions"
163 " defined.\n", c->name);
164 i2o_pci_free(c);
165 return -EINVAL;
166 }
167
168 /* Map the I2O controller */
169 if (c->raptor) {
170 printk(KERN_INFO "%s: PCI I2O controller\n", c->name);
171 printk(KERN_INFO " BAR0 at 0x%08lX size=%ld\n",
172 (unsigned long)c->base.phys, (unsigned long)c->base.len);
173 printk(KERN_INFO " BAR1 at 0x%08lX size=%ld\n",
174 (unsigned long)c->in_queue.phys,
175 (unsigned long)c->in_queue.len);
176 } else
177 printk(KERN_INFO "%s: PCI I2O controller at %08lX size=%ld\n",
178 c->name, (unsigned long)c->base.phys,
179 (unsigned long)c->base.len);
180
181 c->base.virt = ioremap(c->base.phys, c->base.len);
182 if (!c->base.virt) {
183 printk(KERN_ERR "%s: Unable to map controller.\n", c->name);
184 return -ENOMEM;
185 }
186
187 if (c->raptor) {
188 c->in_queue.virt = ioremap(c->in_queue.phys, c->in_queue.len);
189 if (!c->in_queue.virt) {
190 printk(KERN_ERR "%s: Unable to map controller.\n",
191 c->name);
192 i2o_pci_free(c);
193 return -ENOMEM;
194 }
195 } else
196 c->in_queue = c->base;
197
198 c->irq_mask = c->base.virt + 0x34;
199 c->post_port = c->base.virt + 0x40;
200 c->reply_port = c->base.virt + 0x44;
201
202#ifdef CONFIG_MTRR
203 /* Enable Write Combining MTRR for IOP's memory region */
204 c->mtrr_reg0 = mtrr_add(c->in_queue.phys, c->in_queue.len,
205 MTRR_TYPE_WRCOMB, 1);
206 c->mtrr_reg1 = -1;
207
208 if (c->mtrr_reg0 < 0)
209 printk(KERN_WARNING "%s: could not enable write combining "
210 "MTRR\n", c->name);
211 else
212 printk(KERN_INFO "%s: using write combining MTRR\n", c->name);
213
214 /*
215 * If it is an INTEL i960 I/O processor then set the first 64K to
216 * Uncacheable since the region contains the messaging unit which
217 * shouldn't be cached.
218 */
219 if ((pdev->vendor == PCI_VENDOR_ID_INTEL ||
220 pdev->vendor == PCI_VENDOR_ID_DPT) && !c->raptor) {
221 printk(KERN_INFO "%s: MTRR workaround for Intel i960 processor"
222 "\n", c->name);
223 c->mtrr_reg1 = mtrr_add(c->base.phys, 0x10000,
224 MTRR_TYPE_UNCACHABLE, 1);
225
226 if (c->mtrr_reg1 < 0) {
227 printk(KERN_WARNING "%s: Error in setting "
228 "MTRR_TYPE_UNCACHABLE\n", c->name);
229 mtrr_del(c->mtrr_reg0, c->in_queue.phys,
230 c->in_queue.len);
231 c->mtrr_reg0 = -1;
232 }
233 }
234#endif
235
236 if (i2o_dma_alloc(dev, &c->status, 8, GFP_KERNEL)) {
237 i2o_pci_free(c);
238 return -ENOMEM;
239 }
240
241 if (i2o_dma_alloc(dev, &c->hrt, sizeof(i2o_hrt), GFP_KERNEL)) {
242 i2o_pci_free(c);
243 return -ENOMEM;
244 }
245
246 if (i2o_dma_alloc(dev, &c->dlct, 8192, GFP_KERNEL)) {
247 i2o_pci_free(c);
248 return -ENOMEM;
249 }
250
251 if (i2o_dma_alloc(dev, &c->status_block, sizeof(i2o_status_block),
252 GFP_KERNEL)) {
253 i2o_pci_free(c);
254 return -ENOMEM;
255 }
256
257 if (i2o_dma_alloc(dev, &c->out_queue, MSG_POOL_SIZE, GFP_KERNEL)) {
258 i2o_pci_free(c);
259 return -ENOMEM;
260 }
261
262 pci_set_drvdata(pdev, c);
263
264 return 0;
265}
266
267/**
268 * i2o_pci_interrupt - Interrupt handler for I2O controller
269 * @irq: interrupt line
270 * @dev_id: pointer to the I2O controller
271 * @r: pointer to registers
272 *
273 * Handle an interrupt from a PCI based I2O controller. This turns out
274 * to be rather simple. We keep the controller pointer in the cookie.
275 */
276static irqreturn_t i2o_pci_interrupt(int irq, void *dev_id, struct pt_regs *r)
277{
278 struct i2o_controller *c = dev_id;
279 struct device *dev = &c->pdev->dev;
280 struct i2o_message *m;
281 u32 mv;
282
283 /*
284 * Old 960 steppings had a bug in the I2O unit that caused
285 * the queue to appear empty when it wasn't.
286 */
287 mv = I2O_REPLY_READ32(c);
288 if (mv == I2O_QUEUE_EMPTY) {
289 mv = I2O_REPLY_READ32(c);
290 if (unlikely(mv == I2O_QUEUE_EMPTY)) {
291 return IRQ_NONE;
292 } else
293 pr_debug("%s: 960 bug detected\n", c->name);
294 }
295
296 while (mv != I2O_QUEUE_EMPTY) {
297 /*
298 * Map the message from the page frame map to kernel virtual.
299 * Because bus_to_virt is deprecated, we have calculate the
300 * location by ourself!
301 */
302 m = i2o_msg_out_to_virt(c, mv);
303
304 /*
305 * Ensure this message is seen coherently but cachably by
306 * the processor
307 */
308 dma_sync_single_for_cpu(dev, mv, MSG_FRAME_SIZE * 4,
309 PCI_DMA_FROMDEVICE);
310
311 /* dispatch it */
312 if (i2o_driver_dispatch(c, mv, m))
313 /* flush it if result != 0 */
314 i2o_flush_reply(c, mv);
315
316 /*
317 * That 960 bug again...
318 */
319 mv = I2O_REPLY_READ32(c);
320 if (mv == I2O_QUEUE_EMPTY)
321 mv = I2O_REPLY_READ32(c);
322 }
323 return IRQ_HANDLED;
324}
325
326/**
327 * i2o_pci_irq_enable - Allocate interrupt for I2O controller
328 *
329 * Allocate an interrupt for the I2O controller, and activate interrupts
330 * on the I2O controller.
331 *
332 * Returns 0 on success or negative error code on failure.
333 */
334static int i2o_pci_irq_enable(struct i2o_controller *c)
335{
336 struct pci_dev *pdev = c->pdev;
337 int rc;
338
339 I2O_IRQ_WRITE32(c, 0xffffffff);
340
341 if (pdev->irq) {
342 rc = request_irq(pdev->irq, i2o_pci_interrupt, SA_SHIRQ,
343 c->name, c);
344 if (rc < 0) {
345 printk(KERN_ERR "%s: unable to allocate interrupt %d."
346 "\n", c->name, pdev->irq);
347 return rc;
348 }
349 }
350
351 I2O_IRQ_WRITE32(c, 0x00000000);
352
353 printk(KERN_INFO "%s: Installed at IRQ %d\n", c->name, pdev->irq);
354
355 return 0;
356}
357
358/**
359 * i2o_pci_irq_disable - Free interrupt for I2O controller
360 * @c: I2O controller
361 *
362 * Disable interrupts in I2O controller and then free interrupt.
363 */
364static void i2o_pci_irq_disable(struct i2o_controller *c)
365{
366 I2O_IRQ_WRITE32(c, 0xffffffff);
367
368 if (c->pdev->irq > 0)
369 free_irq(c->pdev->irq, c);
370}
371
372/**
373 * i2o_pci_probe - Probe the PCI device for an I2O controller
374 * @dev: PCI device to test
375 * @id: id which matched with the PCI device id table
376 *
377 * Probe the PCI device for any device which is a memory of the
378 * Intelligent, I2O class or an Adaptec Zero Channel Controller. We
379 * attempt to set up each such device and register it with the core.
380 *
381 * Returns 0 on success or negative error code on failure.
382 */
383static int __devinit i2o_pci_probe(struct pci_dev *pdev,
384 const struct pci_device_id *id)
385{
386 struct i2o_controller *c;
387 int rc;
388
389 printk(KERN_INFO "i2o: Checking for PCI I2O controllers...\n");
390
391 if ((pdev->class & 0xff) > 1) {
392 printk(KERN_WARNING "i2o: I2O controller found but does not "
393 "support I2O 1.5 (skipping).\n");
394 return -ENODEV;
395 }
396
397 if ((rc = pci_enable_device(pdev))) {
398 printk(KERN_WARNING "i2o: I2O controller found but could not be"
399 " enabled.\n");
400 return rc;
401 }
402
403 printk(KERN_INFO "i2o: I2O controller found on bus %d at %d.\n",
404 pdev->bus->number, pdev->devfn);
405
406 if (pci_set_dma_mask(pdev, DMA_32BIT_MASK)) {
407 printk(KERN_WARNING "i2o: I2O controller on bus %d at %d: No "
408 "suitable DMA available!\n", pdev->bus->number,
409 pdev->devfn);
410 rc = -ENODEV;
411 goto disable;
412 }
413
414 pci_set_master(pdev);
415
416 c = i2o_iop_alloc();
417 if (IS_ERR(c)) {
418 printk(KERN_ERR "i2o: memory for I2O controller could not be "
419 "allocated\n");
420 rc = PTR_ERR(c);
421 goto disable;
422 }
423
424 c->pdev = pdev;
425 c->device = pdev->dev;
426
427 /* Cards that fall apart if you hit them with large I/O loads... */
428 if (pdev->vendor == PCI_VENDOR_ID_NCR && pdev->device == 0x0630) {
429 c->short_req = 1;
430 printk(KERN_INFO "%s: Symbios FC920 workarounds activated.\n",
431 c->name);
432 }
433
434 if (pdev->subsystem_vendor == PCI_VENDOR_ID_PROMISE) {
435 c->promise = 1;
436 printk(KERN_INFO "%s: Promise workarounds activated.\n",
437 c->name);
438 }
439
440 /* Cards that go bananas if you quiesce them before you reset them. */
441 if (pdev->vendor == PCI_VENDOR_ID_DPT) {
442 c->no_quiesce = 1;
443 if (pdev->device == 0xa511)
444 c->raptor = 1;
445 }
446
447 if ((rc = i2o_pci_alloc(c))) {
448 printk(KERN_ERR "%s: DMA / IO allocation for I2O controller "
449 " failed\n", c->name);
450 goto free_controller;
451 }
452
453 if (i2o_pci_irq_enable(c)) {
454 printk(KERN_ERR "%s: unable to enable interrupts for I2O "
455 "controller\n", c->name);
456 goto free_pci;
457 }
458
459 if ((rc = i2o_iop_add(c)))
460 goto uninstall;
461
462 return 0;
463
464 uninstall:
465 i2o_pci_irq_disable(c);
466
467 free_pci:
468 i2o_pci_free(c);
469
470 free_controller:
471 i2o_iop_free(c);
472
473 disable:
474 pci_disable_device(pdev);
475
476 return rc;
477}
478
479/**
480 * i2o_pci_remove - Removes a I2O controller from the system
481 * pdev: I2O controller which should be removed
482 *
483 * Reset the I2O controller, disable interrupts and remove all allocated
484 * resources.
485 */
486static void __devexit i2o_pci_remove(struct pci_dev *pdev)
487{
488 struct i2o_controller *c;
489 c = pci_get_drvdata(pdev);
490
491 i2o_iop_remove(c);
492 i2o_pci_irq_disable(c);
493 i2o_pci_free(c);
494
495 printk(KERN_INFO "%s: Controller removed.\n", c->name);
496
497 i2o_iop_free(c);
498 pci_disable_device(pdev);
499};
500
501/* PCI driver for I2O controller */
502static struct pci_driver i2o_pci_driver = {
503 .name = "I2O controller",
504 .id_table = i2o_pci_ids,
505 .probe = i2o_pci_probe,
506 .remove = __devexit_p(i2o_pci_remove),
507};
508
509/**
510 * i2o_pci_init - registers I2O PCI driver in PCI subsystem
511 *
512 * Returns > 0 on success or negative error code on failure.
513 */
514int __init i2o_pci_init(void)
515{
516 return pci_register_driver(&i2o_pci_driver);
517};
518
519/**
520 * i2o_pci_exit - unregisters I2O PCI driver from PCI subsystem
521 */
522void __exit i2o_pci_exit(void)
523{
524 pci_unregister_driver(&i2o_pci_driver);
525};
526
527EXPORT_SYMBOL(i2o_dma_realloc);
528MODULE_DEVICE_TABLE(pci, i2o_pci_ids);
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-11 23:50:39 -0500