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authorPaul Gortmaker <paul.gortmaker@windriver.com>2012-05-17 19:06:13 -0400
committerPaul Gortmaker <paul.gortmaker@windriver.com>2012-05-17 19:06:13 -0400
commitbb8187d35f820671d6dd76700d77a6b55f95e2c5 (patch)
treeb699b184860cc7e9f2732c73d61ea92e3e2ad9e4 /drivers/mca
parenta88dc06cd515b3bb9dfa18606e88d0be9a5b6ddd (diff)
MCA: delete all remaining traces of microchannel bus support.
Hardware with MCA bus is limited to 386 and 486 class machines that are now 20+ years old and typically with less than 32MB of memory. A quick search on the internet, and you see that even the MCA hobbyist/enthusiast community has lost interest in the early 2000 era and never really even moved ahead from the 2.4 kernels to the 2.6 series. This deletes anything remaining related to CONFIG_MCA from core kernel code and from the x86 architecture. There is no point in carrying this any further into the future. One complication to watch for is inadvertently scooping up stuff relating to machine check, since there is overlap in the TLA name space (e.g. arch/x86/boot/mca.c). Cc: Thomas Gleixner <tglx@linutronix.de> Cc: James Bottomley <JBottomley@Parallels.com> Cc: x86@kernel.org Acked-by: Ingo Molnar <mingo@elte.hu> Acked-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Diffstat (limited to 'drivers/mca')
-rw-r--r--drivers/mca/Kconfig14
-rw-r--r--drivers/mca/Makefile7
-rw-r--r--drivers/mca/mca-bus.c169
-rw-r--r--drivers/mca/mca-device.c218
-rw-r--r--drivers/mca/mca-driver.c63
-rw-r--r--drivers/mca/mca-legacy.c329
-rw-r--r--drivers/mca/mca-proc.c249
7 files changed, 0 insertions, 1049 deletions
diff --git a/drivers/mca/Kconfig b/drivers/mca/Kconfig
deleted file mode 100644
index a7a0220ab4bd..000000000000
--- a/drivers/mca/Kconfig
+++ /dev/null
@@ -1,14 +0,0 @@
1config MCA_LEGACY
2 bool "Legacy MCA API Support"
3 depends on MCA
4 help
5 This compiles in support for the old slot based MCA API. If you
6 have an unconverted MCA driver, you will need to say Y here. It
7 is safe to say Y anyway.
8
9config MCA_PROC_FS
10 bool "Support for the mca entry in /proc"
11 depends on MCA_LEGACY && PROC_FS
12 help
13 If you want the old style /proc/mca directory in addition to the
14 new style sysfs say Y here.
diff --git a/drivers/mca/Makefile b/drivers/mca/Makefile
deleted file mode 100644
index 0794b122520e..000000000000
--- a/drivers/mca/Makefile
+++ /dev/null
@@ -1,7 +0,0 @@
1# Makefile for the Linux MCA bus support
2
3obj-y := mca-bus.o mca-device.o mca-driver.o
4
5obj-$(CONFIG_MCA_PROC_FS) += mca-proc.o
6obj-$(CONFIG_MCA_LEGACY) += mca-legacy.o
7
diff --git a/drivers/mca/mca-bus.c b/drivers/mca/mca-bus.c
deleted file mode 100644
index ada5ebbaa255..000000000000
--- a/drivers/mca/mca-bus.c
+++ /dev/null
@@ -1,169 +0,0 @@
1/* -*- mode: c; c-basic-offset: 8 -*- */
2
3/*
4 * MCA bus support functions for sysfs.
5 *
6 * (C) 2002 James Bottomley <James.Bottomley@HansenPartnership.com>
7 *
8**-----------------------------------------------------------------------------
9**
10** This program is free software; you can redistribute it and/or modify
11** it under the terms of the GNU General Public License as published by
12** the Free Software Foundation; either version 2 of the License, or
13** (at your option) any later version.
14**
15** This program is distributed in the hope that it will be useful,
16** but WITHOUT ANY WARRANTY; without even the implied warranty of
17** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18** GNU General Public License for more details.
19**
20** You should have received a copy of the GNU General Public License
21** along with this program; if not, write to the Free Software
22** Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23**
24**-----------------------------------------------------------------------------
25 */
26
27#include <linux/kernel.h>
28#include <linux/device.h>
29#include <linux/mca.h>
30#include <linux/module.h>
31#include <linux/init.h>
32#include <linux/slab.h>
33
34/* Very few machines have more than one MCA bus. However, there are
35 * those that do (Voyager 35xx/5xxx), so we do it this way for future
36 * expansion. None that I know have more than 2 */
37static struct mca_bus *mca_root_busses[MAX_MCA_BUSSES];
38
39#define MCA_DEVINFO(i,s) { .pos = i, .name = s }
40
41struct mca_device_info {
42 short pos_id; /* the 2 byte pos id for this card */
43 char name[50];
44};
45
46static int mca_bus_match (struct device *dev, struct device_driver *drv)
47{
48 struct mca_device *mca_dev = to_mca_device (dev);
49 struct mca_driver *mca_drv = to_mca_driver (drv);
50 const unsigned short *mca_ids = mca_drv->id_table;
51 int i = 0;
52
53 if (mca_ids) {
54 for(i = 0; mca_ids[i]; i++) {
55 if (mca_ids[i] == mca_dev->pos_id) {
56 mca_dev->index = i;
57 return 1;
58 }
59 }
60 }
61 /* If the integrated id is present, treat it as though it were an
62 * additional id in the id_table (it can't be because by definition,
63 * integrated id's overflow a short */
64 if (mca_drv->integrated_id && mca_dev->pos_id ==
65 mca_drv->integrated_id) {
66 mca_dev->index = i;
67 return 1;
68 }
69 return 0;
70}
71
72struct bus_type mca_bus_type = {
73 .name = "MCA",
74 .match = mca_bus_match,
75};
76EXPORT_SYMBOL (mca_bus_type);
77
78static ssize_t mca_show_pos_id(struct device *dev, struct device_attribute *attr, char *buf)
79{
80 /* four digits, \n and trailing \0 */
81 struct mca_device *mca_dev = to_mca_device(dev);
82 int len;
83
84 if(mca_dev->pos_id < MCA_DUMMY_POS_START)
85 len = sprintf(buf, "%04x\n", mca_dev->pos_id);
86 else
87 len = sprintf(buf, "none\n");
88 return len;
89}
90static ssize_t mca_show_pos(struct device *dev, struct device_attribute *attr, char *buf)
91{
92 /* enough for 8 two byte hex chars plus space and new line */
93 int j, len=0;
94 struct mca_device *mca_dev = to_mca_device(dev);
95
96 for(j=0; j<8; j++)
97 len += sprintf(buf+len, "%02x ", mca_dev->pos[j]);
98 /* change last trailing space to new line */
99 buf[len-1] = '\n';
100 return len;
101}
102
103static DEVICE_ATTR(id, S_IRUGO, mca_show_pos_id, NULL);
104static DEVICE_ATTR(pos, S_IRUGO, mca_show_pos, NULL);
105
106int __init mca_register_device(int bus, struct mca_device *mca_dev)
107{
108 struct mca_bus *mca_bus = mca_root_busses[bus];
109 int rc;
110
111 mca_dev->dev.parent = &mca_bus->dev;
112 mca_dev->dev.bus = &mca_bus_type;
113 dev_set_name(&mca_dev->dev, "%02d:%02X", bus, mca_dev->slot);
114 mca_dev->dma_mask = mca_bus->default_dma_mask;
115 mca_dev->dev.dma_mask = &mca_dev->dma_mask;
116 mca_dev->dev.coherent_dma_mask = mca_dev->dma_mask;
117
118 rc = device_register(&mca_dev->dev);
119 if (rc)
120 goto err_out;
121
122 rc = device_create_file(&mca_dev->dev, &dev_attr_id);
123 if (rc) goto err_out_devreg;
124 rc = device_create_file(&mca_dev->dev, &dev_attr_pos);
125 if (rc) goto err_out_id;
126
127 return 1;
128
129err_out_id:
130 device_remove_file(&mca_dev->dev, &dev_attr_id);
131err_out_devreg:
132 device_unregister(&mca_dev->dev);
133err_out:
134 return 0;
135}
136
137/* */
138struct mca_bus * __devinit mca_attach_bus(int bus)
139{
140 struct mca_bus *mca_bus;
141
142 if (unlikely(mca_root_busses[bus] != NULL)) {
143 /* This should never happen, but just in case */
144 printk(KERN_EMERG "MCA tried to add already existing bus %d\n",
145 bus);
146 dump_stack();
147 return NULL;
148 }
149
150 mca_bus = kzalloc(sizeof(struct mca_bus), GFP_KERNEL);
151 if (!mca_bus)
152 return NULL;
153
154 dev_set_name(&mca_bus->dev, "mca%d", bus);
155 sprintf(mca_bus->name,"Host %s MCA Bridge", bus ? "Secondary" : "Primary");
156 if (device_register(&mca_bus->dev)) {
157 kfree(mca_bus);
158 return NULL;
159 }
160
161 mca_root_busses[bus] = mca_bus;
162
163 return mca_bus;
164}
165
166int __init mca_system_init (void)
167{
168 return bus_register(&mca_bus_type);
169}
diff --git a/drivers/mca/mca-device.c b/drivers/mca/mca-device.c
deleted file mode 100644
index e7adf89fae41..000000000000
--- a/drivers/mca/mca-device.c
+++ /dev/null
@@ -1,218 +0,0 @@
1/* -*- mode: c; c-basic-offset: 8 -*- */
2
3/*
4 * MCA device support functions
5 *
6 * These functions support the ongoing device access API.
7 *
8 * (C) 2002 James Bottomley <James.Bottomley@HansenPartnership.com>
9 *
10**-----------------------------------------------------------------------------
11**
12** This program is free software; you can redistribute it and/or modify
13** it under the terms of the GNU General Public License as published by
14** the Free Software Foundation; either version 2 of the License, or
15** (at your option) any later version.
16**
17** This program is distributed in the hope that it will be useful,
18** but WITHOUT ANY WARRANTY; without even the implied warranty of
19** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20** GNU General Public License for more details.
21**
22** You should have received a copy of the GNU General Public License
23** along with this program; if not, write to the Free Software
24** Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
25**
26**-----------------------------------------------------------------------------
27 */
28
29#include <linux/module.h>
30#include <linux/device.h>
31#include <linux/mca.h>
32#include <linux/string.h>
33
34/**
35 * mca_device_read_stored_pos - read POS register from stored data
36 * @mca_dev: device to read from
37 * @reg: register to read from
38 *
39 * Fetch a POS value that was stored at boot time by the kernel
40 * when it scanned the MCA space. The register value is returned.
41 * Missing or invalid registers report 0.
42 */
43unsigned char mca_device_read_stored_pos(struct mca_device *mca_dev, int reg)
44{
45 if(reg < 0 || reg >= 8)
46 return 0;
47
48 return mca_dev->pos[reg];
49}
50EXPORT_SYMBOL(mca_device_read_stored_pos);
51
52/**
53 * mca_device_read_pos - read POS register from card
54 * @mca_dev: device to read from
55 * @reg: register to read from
56 *
57 * Fetch a POS value directly from the hardware to obtain the
58 * current value. This is much slower than
59 * mca_device_read_stored_pos and may not be invoked from
60 * interrupt context. It handles the deep magic required for
61 * onboard devices transparently.
62 */
63unsigned char mca_device_read_pos(struct mca_device *mca_dev, int reg)
64{
65 struct mca_bus *mca_bus = to_mca_bus(mca_dev->dev.parent);
66
67 return mca_bus->f.mca_read_pos(mca_dev, reg);
68
69 return mca_dev->pos[reg];
70}
71EXPORT_SYMBOL(mca_device_read_pos);
72
73
74/**
75 * mca_device_write_pos - read POS register from card
76 * @mca_dev: device to write pos register to
77 * @reg: register to write to
78 * @byte: byte to write to the POS registers
79 *
80 * Store a POS value directly to the hardware. You should not
81 * normally need to use this function and should have a very good
82 * knowledge of MCA bus before you do so. Doing this wrongly can
83 * damage the hardware.
84 *
85 * This function may not be used from interrupt context.
86 *
87 */
88void mca_device_write_pos(struct mca_device *mca_dev, int reg,
89 unsigned char byte)
90{
91 struct mca_bus *mca_bus = to_mca_bus(mca_dev->dev.parent);
92
93 mca_bus->f.mca_write_pos(mca_dev, reg, byte);
94}
95EXPORT_SYMBOL(mca_device_write_pos);
96
97/**
98 * mca_device_transform_irq - transform the ADF obtained IRQ
99 * @mca_device: device whose irq needs transforming
100 * @irq: input irq from ADF
101 *
102 * MCA Adapter Definition Files (ADF) contain irq, ioport, memory
103 * etc. definitions. In systems with more than one bus, these need
104 * to be transformed through bus mapping functions to get the real
105 * system global quantities.
106 *
107 * This function transforms the interrupt number and returns the
108 * transformed system global interrupt
109 */
110int mca_device_transform_irq(struct mca_device *mca_dev, int irq)
111{
112 struct mca_bus *mca_bus = to_mca_bus(mca_dev->dev.parent);
113
114 return mca_bus->f.mca_transform_irq(mca_dev, irq);
115}
116EXPORT_SYMBOL(mca_device_transform_irq);
117
118/**
119 * mca_device_transform_ioport - transform the ADF obtained I/O port
120 * @mca_device: device whose port needs transforming
121 * @ioport: input I/O port from ADF
122 *
123 * MCA Adapter Definition Files (ADF) contain irq, ioport, memory
124 * etc. definitions. In systems with more than one bus, these need
125 * to be transformed through bus mapping functions to get the real
126 * system global quantities.
127 *
128 * This function transforms the I/O port number and returns the
129 * transformed system global port number.
130 *
131 * This transformation can be assumed to be linear for port ranges.
132 */
133int mca_device_transform_ioport(struct mca_device *mca_dev, int port)
134{
135 struct mca_bus *mca_bus = to_mca_bus(mca_dev->dev.parent);
136
137 return mca_bus->f.mca_transform_ioport(mca_dev, port);
138}
139EXPORT_SYMBOL(mca_device_transform_ioport);
140
141/**
142 * mca_device_transform_memory - transform the ADF obtained memory
143 * @mca_device: device whose memory region needs transforming
144 * @mem: memory region start from ADF
145 *
146 * MCA Adapter Definition Files (ADF) contain irq, ioport, memory
147 * etc. definitions. In systems with more than one bus, these need
148 * to be transformed through bus mapping functions to get the real
149 * system global quantities.
150 *
151 * This function transforms the memory region start and returns the
152 * transformed system global memory region (physical).
153 *
154 * This transformation can be assumed to be linear for region ranges.
155 */
156void *mca_device_transform_memory(struct mca_device *mca_dev, void *mem)
157{
158 struct mca_bus *mca_bus = to_mca_bus(mca_dev->dev.parent);
159
160 return mca_bus->f.mca_transform_memory(mca_dev, mem);
161}
162EXPORT_SYMBOL(mca_device_transform_memory);
163
164
165/**
166 * mca_device_claimed - check if claimed by driver
167 * @mca_dev: device to check
168 *
169 * Returns 1 if the slot has been claimed by a driver
170 */
171
172int mca_device_claimed(struct mca_device *mca_dev)
173{
174 return mca_dev->driver_loaded;
175}
176EXPORT_SYMBOL(mca_device_claimed);
177
178/**
179 * mca_device_set_claim - set the claim value of the driver
180 * @mca_dev: device to set value for
181 * @val: claim value to set (1 claimed, 0 unclaimed)
182 */
183void mca_device_set_claim(struct mca_device *mca_dev, int val)
184{
185 mca_dev->driver_loaded = val;
186}
187EXPORT_SYMBOL(mca_device_set_claim);
188
189/**
190 * mca_device_status - get the status of the device
191 * @mca_device: device to get
192 *
193 * returns an enumeration of the device status:
194 *
195 * MCA_ADAPTER_NORMAL adapter is OK.
196 * MCA_ADAPTER_NONE no adapter at device (should never happen).
197 * MCA_ADAPTER_DISABLED adapter is disabled.
198 * MCA_ADAPTER_ERROR adapter cannot be initialised.
199 */
200enum MCA_AdapterStatus mca_device_status(struct mca_device *mca_dev)
201{
202 return mca_dev->status;
203}
204EXPORT_SYMBOL(mca_device_status);
205
206/**
207 * mca_device_set_name - set the name of the device
208 * @mca_device: device to set the name of
209 * @name: name to set
210 */
211void mca_device_set_name(struct mca_device *mca_dev, const char *name)
212{
213 if(!mca_dev)
214 return;
215
216 strlcpy(mca_dev->name, name, sizeof(mca_dev->name));
217}
218EXPORT_SYMBOL(mca_device_set_name);
diff --git a/drivers/mca/mca-driver.c b/drivers/mca/mca-driver.c
deleted file mode 100644
index 32cd39bcc715..000000000000
--- a/drivers/mca/mca-driver.c
+++ /dev/null
@@ -1,63 +0,0 @@
1/* -*- mode: c; c-basic-offset: 8 -*- */
2
3/*
4 * MCA driver support functions for sysfs.
5 *
6 * (C) 2002 James Bottomley <James.Bottomley@HansenPartnership.com>
7 *
8**-----------------------------------------------------------------------------
9**
10** This program is free software; you can redistribute it and/or modify
11** it under the terms of the GNU General Public License as published by
12** the Free Software Foundation; either version 2 of the License, or
13** (at your option) any later version.
14**
15** This program is distributed in the hope that it will be useful,
16** but WITHOUT ANY WARRANTY; without even the implied warranty of
17** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18** GNU General Public License for more details.
19**
20** You should have received a copy of the GNU General Public License
21** along with this program; if not, write to the Free Software
22** Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23**
24**-----------------------------------------------------------------------------
25 */
26
27#include <linux/device.h>
28#include <linux/mca.h>
29#include <linux/module.h>
30
31int mca_register_driver(struct mca_driver *mca_drv)
32{
33 int r;
34
35 if (MCA_bus) {
36 mca_drv->driver.bus = &mca_bus_type;
37 if ((r = driver_register(&mca_drv->driver)) < 0)
38 return r;
39 mca_drv->integrated_id = 0;
40 }
41
42 return 0;
43}
44EXPORT_SYMBOL(mca_register_driver);
45
46int mca_register_driver_integrated(struct mca_driver *mca_driver,
47 int integrated_id)
48{
49 int r = mca_register_driver(mca_driver);
50
51 if (!r)
52 mca_driver->integrated_id = integrated_id;
53
54 return r;
55}
56EXPORT_SYMBOL(mca_register_driver_integrated);
57
58void mca_unregister_driver(struct mca_driver *mca_drv)
59{
60 if (MCA_bus)
61 driver_unregister(&mca_drv->driver);
62}
63EXPORT_SYMBOL(mca_unregister_driver);
diff --git a/drivers/mca/mca-legacy.c b/drivers/mca/mca-legacy.c
deleted file mode 100644
index 494f0c2001f5..000000000000
--- a/drivers/mca/mca-legacy.c
+++ /dev/null
@@ -1,329 +0,0 @@
1/* -*- mode: c; c-basic-offset: 8 -*- */
2
3/*
4 * MCA bus support functions for legacy (2.4) API.
5 *
6 * Legacy API means the API that operates in terms of MCA slot number
7 *
8 * (C) 2002 James Bottomley <James.Bottomley@HansenPartnership.com>
9 *
10**-----------------------------------------------------------------------------
11**
12** This program is free software; you can redistribute it and/or modify
13** it under the terms of the GNU General Public License as published by
14** the Free Software Foundation; either version 2 of the License, or
15** (at your option) any later version.
16**
17** This program is distributed in the hope that it will be useful,
18** but WITHOUT ANY WARRANTY; without even the implied warranty of
19** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20** GNU General Public License for more details.
21**
22** You should have received a copy of the GNU General Public License
23** along with this program; if not, write to the Free Software
24** Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
25**
26**-----------------------------------------------------------------------------
27 */
28
29#include <linux/module.h>
30#include <linux/device.h>
31#include <linux/mca-legacy.h>
32#include <asm/io.h>
33
34/* NOTE: This structure is stack allocated */
35struct mca_find_adapter_info {
36 int id;
37 int slot;
38 struct mca_device *mca_dev;
39};
40
41/* The purpose of this iterator is to loop over all the devices and
42 * find the one with the smallest slot number that's just greater than
43 * or equal to the required slot with a matching id */
44static int mca_find_adapter_callback(struct device *dev, void *data)
45{
46 struct mca_find_adapter_info *info = data;
47 struct mca_device *mca_dev = to_mca_device(dev);
48
49 if(mca_dev->pos_id != info->id)
50 return 0;
51
52 if(mca_dev->slot < info->slot)
53 return 0;
54
55 if(!info->mca_dev || info->mca_dev->slot >= mca_dev->slot)
56 info->mca_dev = mca_dev;
57
58 return 0;
59}
60
61/**
62 * mca_find_adapter - scan for adapters
63 * @id: MCA identification to search for
64 * @start: starting slot
65 *
66 * Search the MCA configuration for adapters matching the 16bit
67 * ID given. The first time it should be called with start as zero
68 * and then further calls made passing the return value of the
69 * previous call until %MCA_NOTFOUND is returned.
70 *
71 * Disabled adapters are not reported.
72 */
73
74int mca_find_adapter(int id, int start)
75{
76 struct mca_find_adapter_info info;
77
78 if(id == 0xffff)
79 return MCA_NOTFOUND;
80
81 info.slot = start;
82 info.id = id;
83 info.mca_dev = NULL;
84
85 for(;;) {
86 bus_for_each_dev(&mca_bus_type, NULL, &info, mca_find_adapter_callback);
87
88 if(info.mca_dev == NULL)
89 return MCA_NOTFOUND;
90
91 if(info.mca_dev->status != MCA_ADAPTER_DISABLED)
92 break;
93
94 /* OK, found adapter but it was disabled. Go around
95 * again, excluding the slot we just found */
96
97 info.slot = info.mca_dev->slot + 1;
98 info.mca_dev = NULL;
99 }
100
101 return info.mca_dev->slot;
102}
103EXPORT_SYMBOL(mca_find_adapter);
104
105/*--------------------------------------------------------------------*/
106
107/**
108 * mca_find_unused_adapter - scan for unused adapters
109 * @id: MCA identification to search for
110 * @start: starting slot
111 *
112 * Search the MCA configuration for adapters matching the 16bit
113 * ID given. The first time it should be called with start as zero
114 * and then further calls made passing the return value of the
115 * previous call until %MCA_NOTFOUND is returned.
116 *
117 * Adapters that have been claimed by drivers and those that
118 * are disabled are not reported. This function thus allows a driver
119 * to scan for further cards when some may already be driven.
120 */
121
122int mca_find_unused_adapter(int id, int start)
123{
124 struct mca_find_adapter_info info = { 0 };
125
126 if (!MCA_bus || id == 0xffff)
127 return MCA_NOTFOUND;
128
129 info.slot = start;
130 info.id = id;
131 info.mca_dev = NULL;
132
133 for(;;) {
134 bus_for_each_dev(&mca_bus_type, NULL, &info, mca_find_adapter_callback);
135
136 if(info.mca_dev == NULL)
137 return MCA_NOTFOUND;
138
139 if(info.mca_dev->status != MCA_ADAPTER_DISABLED
140 && !info.mca_dev->driver_loaded)
141 break;
142
143 /* OK, found adapter but it was disabled or already in
144 * use. Go around again, excluding the slot we just
145 * found */
146
147 info.slot = info.mca_dev->slot + 1;
148 info.mca_dev = NULL;
149 }
150
151 return info.mca_dev->slot;
152}
153EXPORT_SYMBOL(mca_find_unused_adapter);
154
155/* NOTE: stack allocated structure */
156struct mca_find_device_by_slot_info {
157 int slot;
158 struct mca_device *mca_dev;
159};
160
161static int mca_find_device_by_slot_callback(struct device *dev, void *data)
162{
163 struct mca_find_device_by_slot_info *info = data;
164 struct mca_device *mca_dev = to_mca_device(dev);
165
166 if(mca_dev->slot == info->slot)
167 info->mca_dev = mca_dev;
168
169 return 0;
170}
171
172struct mca_device *mca_find_device_by_slot(int slot)
173{
174 struct mca_find_device_by_slot_info info;
175
176 info.slot = slot;
177 info.mca_dev = NULL;
178
179 bus_for_each_dev(&mca_bus_type, NULL, &info, mca_find_device_by_slot_callback);
180
181 return info.mca_dev;
182}
183
184/**
185 * mca_read_stored_pos - read POS register from boot data
186 * @slot: slot number to read from
187 * @reg: register to read from
188 *
189 * Fetch a POS value that was stored at boot time by the kernel
190 * when it scanned the MCA space. The register value is returned.
191 * Missing or invalid registers report 0.
192 */
193unsigned char mca_read_stored_pos(int slot, int reg)
194{
195 struct mca_device *mca_dev = mca_find_device_by_slot(slot);
196
197 if(!mca_dev)
198 return 0;
199
200 return mca_device_read_stored_pos(mca_dev, reg);
201}
202EXPORT_SYMBOL(mca_read_stored_pos);
203
204
205/**
206 * mca_read_pos - read POS register from card
207 * @slot: slot number to read from
208 * @reg: register to read from
209 *
210 * Fetch a POS value directly from the hardware to obtain the
211 * current value. This is much slower than mca_read_stored_pos and
212 * may not be invoked from interrupt context. It handles the
213 * deep magic required for onboard devices transparently.
214 */
215
216unsigned char mca_read_pos(int slot, int reg)
217{
218 struct mca_device *mca_dev = mca_find_device_by_slot(slot);
219
220 if(!mca_dev)
221 return 0;
222
223 return mca_device_read_pos(mca_dev, reg);
224}
225EXPORT_SYMBOL(mca_read_pos);
226
227
228/**
229 * mca_write_pos - read POS register from card
230 * @slot: slot number to read from
231 * @reg: register to read from
232 * @byte: byte to write to the POS registers
233 *
234 * Store a POS value directly from the hardware. You should not
235 * normally need to use this function and should have a very good
236 * knowledge of MCA bus before you do so. Doing this wrongly can
237 * damage the hardware.
238 *
239 * This function may not be used from interrupt context.
240 *
241 * Note that this a technically a Bad Thing, as IBM tech stuff says
242 * you should only set POS values through their utilities.
243 * However, some devices such as the 3c523 recommend that you write
244 * back some data to make sure the configuration is consistent.
245 * I'd say that IBM is right, but I like my drivers to work.
246 *
247 * This function can't do checks to see if multiple devices end up
248 * with the same resources, so you might see magic smoke if someone
249 * screws up.
250 */
251
252void mca_write_pos(int slot, int reg, unsigned char byte)
253{
254 struct mca_device *mca_dev = mca_find_device_by_slot(slot);
255
256 if(!mca_dev)
257 return;
258
259 mca_device_write_pos(mca_dev, reg, byte);
260}
261EXPORT_SYMBOL(mca_write_pos);
262
263/**
264 * mca_set_adapter_name - Set the description of the card
265 * @slot: slot to name
266 * @name: text string for the namen
267 *
268 * This function sets the name reported via /proc for this
269 * adapter slot. This is for user information only. Setting a
270 * name deletes any previous name.
271 */
272
273void mca_set_adapter_name(int slot, char* name)
274{
275 struct mca_device *mca_dev = mca_find_device_by_slot(slot);
276
277 if(!mca_dev)
278 return;
279
280 mca_device_set_name(mca_dev, name);
281}
282EXPORT_SYMBOL(mca_set_adapter_name);
283
284/**
285 * mca_mark_as_used - claim an MCA device
286 * @slot: slot to claim
287 * FIXME: should we make this threadsafe
288 *
289 * Claim an MCA slot for a device driver. If the
290 * slot is already taken the function returns 1,
291 * if it is not taken it is claimed and 0 is
292 * returned.
293 */
294
295int mca_mark_as_used(int slot)
296{
297 struct mca_device *mca_dev = mca_find_device_by_slot(slot);
298
299 if(!mca_dev)
300 /* FIXME: this is actually a severe error */
301 return 1;
302
303 if(mca_device_claimed(mca_dev))
304 return 1;
305
306 mca_device_set_claim(mca_dev, 1);
307
308 return 0;
309}
310EXPORT_SYMBOL(mca_mark_as_used);
311
312/**
313 * mca_mark_as_unused - release an MCA device
314 * @slot: slot to claim
315 *
316 * Release the slot for other drives to use.
317 */
318
319void mca_mark_as_unused(int slot)
320{
321 struct mca_device *mca_dev = mca_find_device_by_slot(slot);
322
323 if(!mca_dev)
324 return;
325
326 mca_device_set_claim(mca_dev, 0);
327}
328EXPORT_SYMBOL(mca_mark_as_unused);
329
diff --git a/drivers/mca/mca-proc.c b/drivers/mca/mca-proc.c
deleted file mode 100644
index 81ea0d377bf4..000000000000
--- a/drivers/mca/mca-proc.c
+++ /dev/null
@@ -1,249 +0,0 @@
1/* -*- mode: c; c-basic-offset: 8 -*- */
2
3/*
4 * MCA bus support functions for the proc fs.
5 *
6 * NOTE: this code *requires* the legacy MCA api.
7 *
8 * Legacy API means the API that operates in terms of MCA slot number
9 *
10 * (C) 2002 James Bottomley <James.Bottomley@HansenPartnership.com>
11 *
12**-----------------------------------------------------------------------------
13**
14** This program is free software; you can redistribute it and/or modify
15** it under the terms of the GNU General Public License as published by
16** the Free Software Foundation; either version 2 of the License, or
17** (at your option) any later version.
18**
19** This program is distributed in the hope that it will be useful,
20** but WITHOUT ANY WARRANTY; without even the implied warranty of
21** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22** GNU General Public License for more details.
23**
24** You should have received a copy of the GNU General Public License
25** along with this program; if not, write to the Free Software
26** Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
27**
28**-----------------------------------------------------------------------------
29 */
30#include <linux/module.h>
31#include <linux/init.h>
32#include <linux/proc_fs.h>
33#include <linux/mca.h>
34
35static int get_mca_info_helper(struct mca_device *mca_dev, char *page, int len)
36{
37 int j;
38
39 for(j=0; j<8; j++)
40 len += sprintf(page+len, "%02x ",
41 mca_dev ? mca_dev->pos[j] : 0xff);
42 len += sprintf(page+len, " %s\n", mca_dev ? mca_dev->name : "");
43 return len;
44}
45
46static int get_mca_info(char *page, char **start, off_t off,
47 int count, int *eof, void *data)
48{
49 int i, len = 0;
50
51 if(MCA_bus) {
52 struct mca_device *mca_dev;
53 /* Format POS registers of eight MCA slots */
54
55 for(i=0; i<MCA_MAX_SLOT_NR; i++) {
56 mca_dev = mca_find_device_by_slot(i);
57
58 len += sprintf(page+len, "Slot %d: ", i+1);
59 len = get_mca_info_helper(mca_dev, page, len);
60 }
61
62 /* Format POS registers of integrated video subsystem */
63
64 mca_dev = mca_find_device_by_slot(MCA_INTEGVIDEO);
65 len += sprintf(page+len, "Video : ");
66 len = get_mca_info_helper(mca_dev, page, len);
67
68 /* Format POS registers of integrated SCSI subsystem */
69
70 mca_dev = mca_find_device_by_slot(MCA_INTEGSCSI);
71 len += sprintf(page+len, "SCSI : ");
72 len = get_mca_info_helper(mca_dev, page, len);
73
74 /* Format POS registers of motherboard */
75
76 mca_dev = mca_find_device_by_slot(MCA_MOTHERBOARD);
77 len += sprintf(page+len, "Planar: ");
78 len = get_mca_info_helper(mca_dev, page, len);
79 } else {
80 /* Leave it empty if MCA not detected - this should *never*
81 * happen!
82 */
83 }
84
85 if (len <= off+count) *eof = 1;
86 *start = page + off;
87 len -= off;
88 if (len>count) len = count;
89 if (len<0) len = 0;
90 return len;
91}
92
93/*--------------------------------------------------------------------*/
94
95static int mca_default_procfn(char* buf, struct mca_device *mca_dev)
96{
97 int len = 0, i;
98 int slot = mca_dev->slot;
99
100 /* Print out the basic information */
101
102 if(slot < MCA_MAX_SLOT_NR) {
103 len += sprintf(buf+len, "Slot: %d\n", slot+1);
104 } else if(slot == MCA_INTEGSCSI) {
105 len += sprintf(buf+len, "Integrated SCSI Adapter\n");
106 } else if(slot == MCA_INTEGVIDEO) {
107 len += sprintf(buf+len, "Integrated Video Adapter\n");
108 } else if(slot == MCA_MOTHERBOARD) {
109 len += sprintf(buf+len, "Motherboard\n");
110 }
111 if (mca_dev->name[0]) {
112
113 /* Drivers might register a name without /proc handler... */
114
115 len += sprintf(buf+len, "Adapter Name: %s\n",
116 mca_dev->name);
117 } else {
118 len += sprintf(buf+len, "Adapter Name: Unknown\n");
119 }
120 len += sprintf(buf+len, "Id: %02x%02x\n",
121 mca_dev->pos[1], mca_dev->pos[0]);
122 len += sprintf(buf+len, "Enabled: %s\nPOS: ",
123 mca_device_status(mca_dev) == MCA_ADAPTER_NORMAL ?
124 "Yes" : "No");
125 for(i=0; i<8; i++) {
126 len += sprintf(buf+len, "%02x ", mca_dev->pos[i]);
127 }
128 len += sprintf(buf+len, "\nDriver Installed: %s",
129 mca_device_claimed(mca_dev) ? "Yes" : "No");
130 buf[len++] = '\n';
131 buf[len] = 0;
132
133 return len;
134} /* mca_default_procfn() */
135
136static int get_mca_machine_info(char* page, char **start, off_t off,
137 int count, int *eof, void *data)
138{
139 int len = 0;
140
141 len += sprintf(page+len, "Model Id: 0x%x\n", machine_id);
142 len += sprintf(page+len, "Submodel Id: 0x%x\n", machine_submodel_id);
143 len += sprintf(page+len, "BIOS Revision: 0x%x\n", BIOS_revision);
144
145 if (len <= off+count) *eof = 1;
146 *start = page + off;
147 len -= off;
148 if (len>count) len = count;
149 if (len<0) len = 0;
150 return len;
151}
152
153static int mca_read_proc(char *page, char **start, off_t off,
154 int count, int *eof, void *data)
155{
156 struct mca_device *mca_dev = (struct mca_device *)data;
157 int len = 0;
158
159 /* Get the standard info */
160
161 len = mca_default_procfn(page, mca_dev);
162
163 /* Do any device-specific processing, if there is any */
164
165 if(mca_dev->procfn) {
166 len += mca_dev->procfn(page+len, mca_dev->slot,
167 mca_dev->proc_dev);
168 }
169 if (len <= off+count) *eof = 1;
170 *start = page + off;
171 len -= off;
172 if (len>count) len = count;
173 if (len<0) len = 0;
174 return len;
175} /* mca_read_proc() */
176
177/*--------------------------------------------------------------------*/
178
179void __init mca_do_proc_init(void)
180{
181 int i;
182 struct proc_dir_entry *proc_mca;
183 struct proc_dir_entry* node = NULL;
184 struct mca_device *mca_dev;
185
186 proc_mca = proc_mkdir("mca", NULL);
187 create_proc_read_entry("pos",0,proc_mca,get_mca_info,NULL);
188 create_proc_read_entry("machine",0,proc_mca,get_mca_machine_info,NULL);
189
190 /* Initialize /proc/mca entries for existing adapters */
191
192 for(i = 0; i < MCA_NUMADAPTERS; i++) {
193 enum MCA_AdapterStatus status;
194 mca_dev = mca_find_device_by_slot(i);
195 if(!mca_dev)
196 continue;
197
198 mca_dev->procfn = NULL;
199
200 if(i < MCA_MAX_SLOT_NR) sprintf(mca_dev->procname,"slot%d", i+1);
201 else if(i == MCA_INTEGVIDEO) sprintf(mca_dev->procname,"video");
202 else if(i == MCA_INTEGSCSI) sprintf(mca_dev->procname,"scsi");
203 else if(i == MCA_MOTHERBOARD) sprintf(mca_dev->procname,"planar");
204
205 status = mca_device_status(mca_dev);
206 if (status != MCA_ADAPTER_NORMAL &&
207 status != MCA_ADAPTER_DISABLED)
208 continue;
209
210 node = create_proc_read_entry(mca_dev->procname, 0, proc_mca,
211 mca_read_proc, (void *)mca_dev);
212
213 if(node == NULL) {
214 printk("Failed to allocate memory for MCA proc-entries!");
215 return;
216 }
217 }
218
219} /* mca_do_proc_init() */
220
221/**
222 * mca_set_adapter_procfn - Set the /proc callback
223 * @slot: slot to configure
224 * @procfn: callback function to call for /proc
225 * @dev: device information passed to the callback
226 *
227 * This sets up an information callback for /proc/mca/slot?. The
228 * function is called with the buffer, slot, and device pointer (or
229 * some equally informative context information, or nothing, if you
230 * prefer), and is expected to put useful information into the
231 * buffer. The adapter name, ID, and POS registers get printed
232 * before this is called though, so don't do it again.
233 *
234 * This should be called with a %NULL @procfn when a module
235 * unregisters, thus preventing kernel crashes and other such
236 * nastiness.
237 */
238
239void mca_set_adapter_procfn(int slot, MCA_ProcFn procfn, void* proc_dev)
240{
241 struct mca_device *mca_dev = mca_find_device_by_slot(slot);
242
243 if(!mca_dev)
244 return;
245
246 mca_dev->procfn = procfn;
247 mca_dev->proc_dev = proc_dev;
248}
249EXPORT_SYMBOL(mca_set_adapter_procfn);
generated by cgit v1.2.2 (git 2.25.0) at 2025-04-13 14:44:12 -0400