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-rw-r--r--drivers/ide/legacy/ide-cs.c481
1 files changed, 481 insertions, 0 deletions
diff --git a/drivers/ide/legacy/ide-cs.c b/drivers/ide/legacy/ide-cs.c
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index 000000000000..e20327e54b1a
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+++ b/drivers/ide/legacy/ide-cs.c
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1/*======================================================================
2
3 A driver for PCMCIA IDE/ATA disk cards
4
5 ide-cs.c 1.3 2002/10/26 05:45:31
6
7 The contents of this file are subject to the Mozilla Public
8 License Version 1.1 (the "License"); you may not use this file
9 except in compliance with the License. You may obtain a copy of
10 the License at http://www.mozilla.org/MPL/
11
12 Software distributed under the License is distributed on an "AS
13 IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
14 implied. See the License for the specific language governing
15 rights and limitations under the License.
16
17 The initial developer of the original code is David A. Hinds
18 <dahinds@users.sourceforge.net>. Portions created by David A. Hinds
19 are Copyright (C) 1999 David A. Hinds. All Rights Reserved.
20
21 Alternatively, the contents of this file may be used under the
22 terms of the GNU General Public License version 2 (the "GPL"), in
23 which case the provisions of the GPL are applicable instead of the
24 above. If you wish to allow the use of your version of this file
25 only under the terms of the GPL and not to allow others to use
26 your version of this file under the MPL, indicate your decision
27 by deleting the provisions above and replace them with the notice
28 and other provisions required by the GPL. If you do not delete
29 the provisions above, a recipient may use your version of this
30 file under either the MPL or the GPL.
31
32======================================================================*/
33
34#include <linux/module.h>
35#include <linux/kernel.h>
36#include <linux/init.h>
37#include <linux/sched.h>
38#include <linux/ptrace.h>
39#include <linux/slab.h>
40#include <linux/string.h>
41#include <linux/timer.h>
42#include <linux/ioport.h>
43#include <linux/ide.h>
44#include <linux/hdreg.h>
45#include <linux/major.h>
46#include <asm/io.h>
47#include <asm/system.h>
48
49#include <pcmcia/version.h>
50#include <pcmcia/cs_types.h>
51#include <pcmcia/cs.h>
52#include <pcmcia/cistpl.h>
53#include <pcmcia/ds.h>
54#include <pcmcia/cisreg.h>
55#include <pcmcia/ciscode.h>
56
57/*====================================================================*/
58
59/* Module parameters */
60
61MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>");
62MODULE_DESCRIPTION("PCMCIA ATA/IDE card driver");
63MODULE_LICENSE("Dual MPL/GPL");
64
65#define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0)
66
67#ifdef PCMCIA_DEBUG
68INT_MODULE_PARM(pc_debug, PCMCIA_DEBUG);
69#define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args)
70static char *version =
71"ide-cs.c 1.3 2002/10/26 05:45:31 (David Hinds)";
72#else
73#define DEBUG(n, args...)
74#endif
75
76/*====================================================================*/
77
78static const char ide_major[] = {
79 IDE0_MAJOR, IDE1_MAJOR, IDE2_MAJOR, IDE3_MAJOR,
80 IDE4_MAJOR, IDE5_MAJOR
81};
82
83typedef struct ide_info_t {
84 dev_link_t link;
85 int ndev;
86 dev_node_t node;
87 int hd;
88} ide_info_t;
89
90static void ide_release(dev_link_t *);
91static int ide_event(event_t event, int priority,
92 event_callback_args_t *args);
93
94static dev_info_t dev_info = "ide-cs";
95
96static dev_link_t *ide_attach(void);
97static void ide_detach(dev_link_t *);
98
99static dev_link_t *dev_list = NULL;
100
101/*======================================================================
102
103 ide_attach() creates an "instance" of the driver, allocating
104 local data structures for one device. The device is registered
105 with Card Services.
106
107======================================================================*/
108
109static dev_link_t *ide_attach(void)
110{
111 ide_info_t *info;
112 dev_link_t *link;
113 client_reg_t client_reg;
114 int ret;
115
116 DEBUG(0, "ide_attach()\n");
117
118 /* Create new ide device */
119 info = kmalloc(sizeof(*info), GFP_KERNEL);
120 if (!info) return NULL;
121 memset(info, 0, sizeof(*info));
122 link = &info->link; link->priv = info;
123
124 link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
125 link->io.Attributes2 = IO_DATA_PATH_WIDTH_8;
126 link->io.IOAddrLines = 3;
127 link->irq.Attributes = IRQ_TYPE_EXCLUSIVE;
128 link->irq.IRQInfo1 = IRQ_LEVEL_ID;
129 link->conf.Attributes = CONF_ENABLE_IRQ;
130 link->conf.Vcc = 50;
131 link->conf.IntType = INT_MEMORY_AND_IO;
132
133 /* Register with Card Services */
134 link->next = dev_list;
135 dev_list = link;
136 client_reg.dev_info = &dev_info;
137 client_reg.EventMask =
138 CS_EVENT_CARD_INSERTION | CS_EVENT_CARD_REMOVAL |
139 CS_EVENT_RESET_PHYSICAL | CS_EVENT_CARD_RESET |
140 CS_EVENT_PM_SUSPEND | CS_EVENT_PM_RESUME;
141 client_reg.event_handler = &ide_event;
142 client_reg.Version = 0x0210;
143 client_reg.event_callback_args.client_data = link;
144 ret = pcmcia_register_client(&link->handle, &client_reg);
145 if (ret != CS_SUCCESS) {
146 cs_error(link->handle, RegisterClient, ret);
147 ide_detach(link);
148 return NULL;
149 }
150
151 return link;
152} /* ide_attach */
153
154/*======================================================================
155
156 This deletes a driver "instance". The device is de-registered
157 with Card Services. If it has been released, all local data
158 structures are freed. Otherwise, the structures will be freed
159 when the device is released.
160
161======================================================================*/
162
163static void ide_detach(dev_link_t *link)
164{
165 dev_link_t **linkp;
166 int ret;
167
168 DEBUG(0, "ide_detach(0x%p)\n", link);
169
170 /* Locate device structure */
171 for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next)
172 if (*linkp == link) break;
173 if (*linkp == NULL)
174 return;
175
176 if (link->state & DEV_CONFIG)
177 ide_release(link);
178
179 if (link->handle) {
180 ret = pcmcia_deregister_client(link->handle);
181 if (ret != CS_SUCCESS)
182 cs_error(link->handle, DeregisterClient, ret);
183 }
184
185 /* Unlink, free device structure */
186 *linkp = link->next;
187 kfree(link->priv);
188
189} /* ide_detach */
190
191static int idecs_register(unsigned long io, unsigned long ctl, unsigned long irq)
192{
193 hw_regs_t hw;
194 memset(&hw, 0, sizeof(hw));
195 ide_init_hwif_ports(&hw, io, ctl, NULL);
196 hw.irq = irq;
197 hw.chipset = ide_pci;
198 return ide_register_hw_with_fixup(&hw, NULL, ide_undecoded_slave);
199}
200
201/*======================================================================
202
203 ide_config() is scheduled to run after a CARD_INSERTION event
204 is received, to configure the PCMCIA socket, and to make the
205 ide device available to the system.
206
207======================================================================*/
208
209#define CS_CHECK(fn, ret) \
210do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
211
212static void ide_config(dev_link_t *link)
213{
214 client_handle_t handle = link->handle;
215 ide_info_t *info = link->priv;
216 tuple_t tuple;
217 struct {
218 u_short buf[128];
219 cisparse_t parse;
220 config_info_t conf;
221 cistpl_cftable_entry_t dflt;
222 } *stk = NULL;
223 cistpl_cftable_entry_t *cfg;
224 int i, pass, last_ret = 0, last_fn = 0, hd, is_kme = 0;
225 unsigned long io_base, ctl_base;
226
227 DEBUG(0, "ide_config(0x%p)\n", link);
228
229 stk = kmalloc(sizeof(*stk), GFP_KERNEL);
230 if (!stk) goto err_mem;
231 memset(stk, 0, sizeof(*stk));
232 cfg = &stk->parse.cftable_entry;
233
234 tuple.TupleData = (cisdata_t *)&stk->buf;
235 tuple.TupleOffset = 0;
236 tuple.TupleDataMax = 255;
237 tuple.Attributes = 0;
238 tuple.DesiredTuple = CISTPL_CONFIG;
239 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
240 CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
241 CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &stk->parse));
242 link->conf.ConfigBase = stk->parse.config.base;
243 link->conf.Present = stk->parse.config.rmask[0];
244
245 tuple.DesiredTuple = CISTPL_MANFID;
246 if (!pcmcia_get_first_tuple(handle, &tuple) &&
247 !pcmcia_get_tuple_data(handle, &tuple) &&
248 !pcmcia_parse_tuple(handle, &tuple, &stk->parse))
249 is_kme = ((stk->parse.manfid.manf == MANFID_KME) &&
250 ((stk->parse.manfid.card == PRODID_KME_KXLC005_A) ||
251 (stk->parse.manfid.card == PRODID_KME_KXLC005_B)));
252
253 /* Configure card */
254 link->state |= DEV_CONFIG;
255
256 /* Not sure if this is right... look up the current Vcc */
257 CS_CHECK(GetConfigurationInfo, pcmcia_get_configuration_info(handle, &stk->conf));
258 link->conf.Vcc = stk->conf.Vcc;
259
260 pass = io_base = ctl_base = 0;
261 tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
262 tuple.Attributes = 0;
263 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
264 while (1) {
265 if (pcmcia_get_tuple_data(handle, &tuple) != 0) goto next_entry;
266 if (pcmcia_parse_tuple(handle, &tuple, &stk->parse) != 0) goto next_entry;
267
268 /* Check for matching Vcc, unless we're desperate */
269 if (!pass) {
270 if (cfg->vcc.present & (1 << CISTPL_POWER_VNOM)) {
271 if (stk->conf.Vcc != cfg->vcc.param[CISTPL_POWER_VNOM] / 10000)
272 goto next_entry;
273 } else if (stk->dflt.vcc.present & (1 << CISTPL_POWER_VNOM)) {
274 if (stk->conf.Vcc != stk->dflt.vcc.param[CISTPL_POWER_VNOM] / 10000)
275 goto next_entry;
276 }
277 }
278
279 if (cfg->vpp1.present & (1 << CISTPL_POWER_VNOM))
280 link->conf.Vpp1 = link->conf.Vpp2 =
281 cfg->vpp1.param[CISTPL_POWER_VNOM] / 10000;
282 else if (stk->dflt.vpp1.present & (1 << CISTPL_POWER_VNOM))
283 link->conf.Vpp1 = link->conf.Vpp2 =
284 stk->dflt.vpp1.param[CISTPL_POWER_VNOM] / 10000;
285
286 if ((cfg->io.nwin > 0) || (stk->dflt.io.nwin > 0)) {
287 cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &stk->dflt.io;
288 link->conf.ConfigIndex = cfg->index;
289 link->io.BasePort1 = io->win[0].base;
290 link->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK;
291 if (!(io->flags & CISTPL_IO_16BIT))
292 link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
293 if (io->nwin == 2) {
294 link->io.NumPorts1 = 8;
295 link->io.BasePort2 = io->win[1].base;
296 link->io.NumPorts2 = (is_kme) ? 2 : 1;
297 if (pcmcia_request_io(link->handle, &link->io) != 0)
298 goto next_entry;
299 io_base = link->io.BasePort1;
300 ctl_base = link->io.BasePort2;
301 } else if ((io->nwin == 1) && (io->win[0].len >= 16)) {
302 link->io.NumPorts1 = io->win[0].len;
303 link->io.NumPorts2 = 0;
304 if (pcmcia_request_io(link->handle, &link->io) != 0)
305 goto next_entry;
306 io_base = link->io.BasePort1;
307 ctl_base = link->io.BasePort1 + 0x0e;
308 } else goto next_entry;
309 /* If we've got this far, we're done */
310 break;
311 }
312
313 next_entry:
314 if (cfg->flags & CISTPL_CFTABLE_DEFAULT)
315 memcpy(&stk->dflt, cfg, sizeof(stk->dflt));
316 if (pass) {
317 CS_CHECK(GetNextTuple, pcmcia_get_next_tuple(handle, &tuple));
318 } else if (pcmcia_get_next_tuple(handle, &tuple) != 0) {
319 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
320 memset(&stk->dflt, 0, sizeof(stk->dflt));
321 pass++;
322 }
323 }
324
325 CS_CHECK(RequestIRQ, pcmcia_request_irq(handle, &link->irq));
326 CS_CHECK(RequestConfiguration, pcmcia_request_configuration(handle, &link->conf));
327
328 /* disable drive interrupts during IDE probe */
329 outb(0x02, ctl_base);
330
331 /* special setup for KXLC005 card */
332 if (is_kme)
333 outb(0x81, ctl_base+1);
334
335 /* retry registration in case device is still spinning up */
336 for (hd = -1, i = 0; i < 10; i++) {
337 hd = idecs_register(io_base, ctl_base, link->irq.AssignedIRQ);
338 if (hd >= 0) break;
339 if (link->io.NumPorts1 == 0x20) {
340 outb(0x02, ctl_base + 0x10);
341 hd = idecs_register(io_base + 0x10, ctl_base + 0x10,
342 link->irq.AssignedIRQ);
343 if (hd >= 0) {
344 io_base += 0x10;
345 ctl_base += 0x10;
346 break;
347 }
348 }
349 __set_current_state(TASK_UNINTERRUPTIBLE);
350 schedule_timeout(HZ/10);
351 }
352
353 if (hd < 0) {
354 printk(KERN_NOTICE "ide-cs: ide_register() at 0x%3lx & 0x%3lx"
355 ", irq %u failed\n", io_base, ctl_base,
356 link->irq.AssignedIRQ);
357 goto failed;
358 }
359
360 info->ndev = 1;
361 sprintf(info->node.dev_name, "hd%c", 'a' + (hd * 2));
362 info->node.major = ide_major[hd];
363 info->node.minor = 0;
364 info->hd = hd;
365 link->dev = &info->node;
366 printk(KERN_INFO "ide-cs: %s: Vcc = %d.%d, Vpp = %d.%d\n",
367 info->node.dev_name, link->conf.Vcc / 10, link->conf.Vcc % 10,
368 link->conf.Vpp1 / 10, link->conf.Vpp1 % 10);
369
370 link->state &= ~DEV_CONFIG_PENDING;
371 kfree(stk);
372 return;
373
374err_mem:
375 printk(KERN_NOTICE "ide-cs: ide_config failed memory allocation\n");
376 goto failed;
377
378cs_failed:
379 cs_error(link->handle, last_fn, last_ret);
380failed:
381 kfree(stk);
382 ide_release(link);
383 link->state &= ~DEV_CONFIG_PENDING;
384} /* ide_config */
385
386/*======================================================================
387
388 After a card is removed, ide_release() will unregister the net
389 device, and release the PCMCIA configuration. If the device is
390 still open, this will be postponed until it is closed.
391
392======================================================================*/
393
394void ide_release(dev_link_t *link)
395{
396 ide_info_t *info = link->priv;
397
398 DEBUG(0, "ide_release(0x%p)\n", link);
399
400 if (info->ndev) {
401 /* FIXME: if this fails we need to queue the cleanup somehow
402 -- need to investigate the required PCMCIA magic */
403 ide_unregister(info->hd);
404 }
405 info->ndev = 0;
406 link->dev = NULL;
407
408 pcmcia_release_configuration(link->handle);
409 pcmcia_release_io(link->handle, &link->io);
410 pcmcia_release_irq(link->handle, &link->irq);
411
412 link->state &= ~DEV_CONFIG;
413
414} /* ide_release */
415
416/*======================================================================
417
418 The card status event handler. Mostly, this schedules other
419 stuff to run after an event is received. A CARD_REMOVAL event
420 also sets some flags to discourage the ide drivers from
421 talking to the ports.
422
423======================================================================*/
424
425int ide_event(event_t event, int priority,
426 event_callback_args_t *args)
427{
428 dev_link_t *link = args->client_data;
429
430 DEBUG(1, "ide_event(0x%06x)\n", event);
431
432 switch (event) {
433 case CS_EVENT_CARD_REMOVAL:
434 link->state &= ~DEV_PRESENT;
435 if (link->state & DEV_CONFIG)
436 ide_release(link);
437 break;
438 case CS_EVENT_CARD_INSERTION:
439 link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
440 ide_config(link);
441 break;
442 case CS_EVENT_PM_SUSPEND:
443 link->state |= DEV_SUSPEND;
444 /* Fall through... */
445 case CS_EVENT_RESET_PHYSICAL:
446 if (link->state & DEV_CONFIG)
447 pcmcia_release_configuration(link->handle);
448 break;
449 case CS_EVENT_PM_RESUME:
450 link->state &= ~DEV_SUSPEND;
451 /* Fall through... */
452 case CS_EVENT_CARD_RESET:
453 if (DEV_OK(link))
454 pcmcia_request_configuration(link->handle, &link->conf);
455 break;
456 }
457 return 0;
458} /* ide_event */
459
460static struct pcmcia_driver ide_cs_driver = {
461 .owner = THIS_MODULE,
462 .drv = {
463 .name = "ide-cs",
464 },
465 .attach = ide_attach,
466 .detach = ide_detach,
467};
468
469static int __init init_ide_cs(void)
470{
471 return pcmcia_register_driver(&ide_cs_driver);
472}
473
474static void __exit exit_ide_cs(void)
475{
476 pcmcia_unregister_driver(&ide_cs_driver);
477 BUG_ON(dev_list != NULL);
478}
479
480module_init(init_ide_cs);
481module_exit(exit_ide_cs);