Commit | Line | Data |
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1da177e4 LT |
1 | /* ps2esdi driver based on assembler code by Arindam Banerji, |
2 | written by Peter De Schrijver */ | |
3 | /* Reassuring note to IBM : This driver was NOT developed by vice-versa | |
4 | engineering the PS/2's BIOS */ | |
5 | /* Dedicated to Wannes, Tofke, Ykke, Godot, Killroy and all those | |
6 | other lovely fish out there... */ | |
7 | /* This code was written during the long and boring WINA | |
8 | elections 1994 */ | |
9 | /* Thanks to Arindam Banerij for giving me the source of his driver */ | |
10 | /* This code may be freely distributed and modified in any way, | |
11 | as long as these notes remain intact */ | |
12 | ||
13 | /* Revised: 05/07/94 by Arindam Banerji (axb@cse.nd.edu) */ | |
14 | /* Revised: 09/08/94 by Peter De Schrijver (stud11@cc4.kuleuven.ac.be) | |
15 | Thanks to Arindam Banerij for sending me the docs of the adapter */ | |
16 | ||
17 | /* BA Modified for ThinkPad 720 by Boris Ashkinazi */ | |
18 | /* (bash@vnet.ibm.com) 08/08/95 */ | |
19 | ||
20 | /* Modified further for ThinkPad-720C by Uri Blumenthal */ | |
21 | /* (uri@watson.ibm.com) Sep 11, 1995 */ | |
22 | ||
23 | /* TODO : | |
24 | + Timeouts | |
25 | + Get disk parameters | |
26 | + DMA above 16MB | |
27 | + reset after read/write error | |
28 | */ | |
29 | ||
30 | #define DEVICE_NAME "PS/2 ESDI" | |
31 | ||
1da177e4 LT |
32 | #include <linux/major.h> |
33 | #include <linux/errno.h> | |
34 | #include <linux/wait.h> | |
35 | #include <linux/interrupt.h> | |
36 | #include <linux/fs.h> | |
37 | #include <linux/kernel.h> | |
38 | #include <linux/genhd.h> | |
39 | #include <linux/ps2esdi.h> | |
40 | #include <linux/blkdev.h> | |
41 | #include <linux/mca-legacy.h> | |
42 | #include <linux/init.h> | |
43 | #include <linux/ioport.h> | |
44 | #include <linux/module.h> | |
1f35f432 | 45 | #include <linux/hdreg.h> |
1da177e4 LT |
46 | |
47 | #include <asm/system.h> | |
48 | #include <asm/io.h> | |
49 | #include <asm/dma.h> | |
50 | #include <asm/mca_dma.h> | |
51 | #include <asm/uaccess.h> | |
52 | ||
53 | #define PS2ESDI_IRQ 14 | |
54 | #define MAX_HD 2 | |
55 | #define MAX_RETRIES 5 | |
56 | #define MAX_16BIT 65536 | |
57 | #define ESDI_TIMEOUT 0xf000 | |
58 | #define ESDI_STAT_TIMEOUT 4 | |
59 | ||
60 | #define TYPE_0_CMD_BLK_LENGTH 2 | |
61 | #define TYPE_1_CMD_BLK_LENGTH 4 | |
62 | ||
63 | static void reset_ctrl(void); | |
64 | ||
65 | static int ps2esdi_geninit(void); | |
66 | ||
67 | static void do_ps2esdi_request(request_queue_t * q); | |
68 | ||
69 | static void ps2esdi_readwrite(int cmd, struct request *req); | |
70 | ||
71 | static void ps2esdi_fill_cmd_block(u_short * cmd_blk, u_short cmd, | |
72 | u_short cyl, u_short head, u_short sector, u_short length, u_char drive); | |
73 | ||
74 | static int ps2esdi_out_cmd_blk(u_short * cmd_blk); | |
75 | ||
76 | static void ps2esdi_prep_dma(char *buffer, u_short length, u_char dma_xmode); | |
77 | ||
78 | static irqreturn_t ps2esdi_interrupt_handler(int irq, void *dev_id, | |
79 | struct pt_regs *regs); | |
80 | static void (*current_int_handler) (u_int) = NULL; | |
81 | static void ps2esdi_normal_interrupt_handler(u_int); | |
82 | static void ps2esdi_initial_reset_int_handler(u_int); | |
83 | static void ps2esdi_geometry_int_handler(u_int); | |
a885c8c4 | 84 | static int ps2esdi_getgeo(struct block_device *bdev, struct hd_geometry *geo); |
1da177e4 LT |
85 | |
86 | static int ps2esdi_read_status_words(int num_words, int max_words, u_short * buffer); | |
87 | ||
88 | static void dump_cmd_complete_status(u_int int_ret_code); | |
89 | ||
90 | static void ps2esdi_get_device_cfg(void); | |
91 | ||
92 | static void ps2esdi_reset_timer(unsigned long unused); | |
93 | ||
94 | static u_int dma_arb_level; /* DMA arbitration level */ | |
95 | ||
96 | static DECLARE_WAIT_QUEUE_HEAD(ps2esdi_int); | |
97 | ||
98 | static int no_int_yet; | |
99 | static int ps2esdi_drives; | |
100 | static u_short io_base; | |
8d06afab | 101 | static DEFINE_TIMER(esdi_timer, ps2esdi_reset_timer, 0, 0); |
1da177e4 LT |
102 | static int reset_status; |
103 | static int ps2esdi_slot = -1; | |
104 | static int tp720esdi = 0; /* Is it Integrated ESDI of ThinkPad-720? */ | |
105 | static int intg_esdi = 0; /* If integrated adapter */ | |
106 | struct ps2esdi_i_struct { | |
107 | unsigned int head, sect, cyl, wpcom, lzone, ctl; | |
108 | }; | |
109 | static DEFINE_SPINLOCK(ps2esdi_lock); | |
110 | static struct request_queue *ps2esdi_queue; | |
111 | static struct request *current_req; | |
112 | ||
113 | #if 0 | |
114 | #if 0 /* try both - I don't know which one is better... UB */ | |
115 | static struct ps2esdi_i_struct ps2esdi_info[MAX_HD] = | |
116 | { | |
117 | {4, 48, 1553, 0, 0, 0}, | |
118 | {0, 0, 0, 0, 0, 0}}; | |
119 | #else | |
120 | static struct ps2esdi_i_struct ps2esdi_info[MAX_HD] = | |
121 | { | |
122 | {64, 32, 161, 0, 0, 0}, | |
123 | {0, 0, 0, 0, 0, 0}}; | |
124 | #endif | |
125 | #endif | |
126 | static struct ps2esdi_i_struct ps2esdi_info[MAX_HD] = | |
127 | { | |
128 | {0, 0, 0, 0, 0, 0}, | |
129 | {0, 0, 0, 0, 0, 0}}; | |
130 | ||
131 | static struct block_device_operations ps2esdi_fops = | |
132 | { | |
133 | .owner = THIS_MODULE, | |
a885c8c4 | 134 | .getgeo = ps2esdi_getgeo, |
1da177e4 LT |
135 | }; |
136 | ||
137 | static struct gendisk *ps2esdi_gendisk[2]; | |
138 | ||
139 | /* initialization routine called by ll_rw_blk.c */ | |
140 | static int __init ps2esdi_init(void) | |
141 | { | |
142 | ||
143 | int error = 0; | |
144 | ||
145 | /* register the device - pass the name and major number */ | |
146 | if (register_blkdev(PS2ESDI_MAJOR, "ed")) | |
147 | return -EBUSY; | |
148 | ||
149 | /* set up some global information - indicating device specific info */ | |
150 | ps2esdi_queue = blk_init_queue(do_ps2esdi_request, &ps2esdi_lock); | |
151 | if (!ps2esdi_queue) { | |
152 | unregister_blkdev(PS2ESDI_MAJOR, "ed"); | |
153 | return -ENOMEM; | |
154 | } | |
155 | ||
156 | /* some minor housekeeping - setup the global gendisk structure */ | |
157 | error = ps2esdi_geninit(); | |
158 | if (error) { | |
159 | printk(KERN_WARNING "PS2ESDI: error initialising" | |
160 | " device, releasing resources\n"); | |
161 | unregister_blkdev(PS2ESDI_MAJOR, "ed"); | |
162 | blk_cleanup_queue(ps2esdi_queue); | |
163 | return error; | |
164 | } | |
165 | return 0; | |
166 | } /* ps2esdi_init */ | |
167 | ||
168 | #ifndef MODULE | |
169 | ||
170 | module_init(ps2esdi_init); | |
171 | ||
172 | #else | |
173 | ||
174 | static int cyl[MAX_HD] = {-1,-1}; | |
175 | static int head[MAX_HD] = {-1, -1}; | |
176 | static int sect[MAX_HD] = {-1, -1}; | |
177 | ||
178 | module_param(tp720esdi, bool, 0); | |
179 | module_param_array(cyl, int, NULL, 0); | |
180 | module_param_array(head, int, NULL, 0); | |
181 | module_param_array(sect, int, NULL, 0); | |
182 | MODULE_LICENSE("GPL"); | |
183 | ||
184 | int init_module(void) { | |
185 | int drive; | |
186 | ||
187 | for(drive = 0; drive < MAX_HD; drive++) { | |
188 | struct ps2esdi_i_struct *info = &ps2esdi_info[drive]; | |
189 | ||
190 | if (cyl[drive] != -1) { | |
191 | info->cyl = info->lzone = cyl[drive]; | |
192 | info->wpcom = 0; | |
193 | } | |
194 | if (head[drive] != -1) { | |
195 | info->head = head[drive]; | |
196 | info->ctl = (head[drive] > 8 ? 8 : 0); | |
197 | } | |
198 | if (sect[drive] != -1) info->sect = sect[drive]; | |
199 | } | |
200 | return ps2esdi_init(); | |
201 | } | |
202 | ||
203 | void | |
204 | cleanup_module(void) { | |
205 | int i; | |
206 | if(ps2esdi_slot) { | |
207 | mca_mark_as_unused(ps2esdi_slot); | |
208 | mca_set_adapter_procfn(ps2esdi_slot, NULL, NULL); | |
209 | } | |
210 | release_region(io_base, 4); | |
211 | free_dma(dma_arb_level); | |
212 | free_irq(PS2ESDI_IRQ, &ps2esdi_gendisk); | |
213 | unregister_blkdev(PS2ESDI_MAJOR, "ed"); | |
214 | blk_cleanup_queue(ps2esdi_queue); | |
215 | for (i = 0; i < ps2esdi_drives; i++) { | |
216 | del_gendisk(ps2esdi_gendisk[i]); | |
217 | put_disk(ps2esdi_gendisk[i]); | |
218 | } | |
219 | } | |
220 | #endif /* MODULE */ | |
221 | ||
222 | /* handles boot time command line parameters */ | |
223 | void __init tp720_setup(char *str, int *ints) | |
224 | { | |
225 | /* no params, just sets the tp720esdi flag if it exists */ | |
226 | ||
227 | printk("%s: TP 720 ESDI flag set\n", DEVICE_NAME); | |
228 | tp720esdi = 1; | |
229 | } | |
230 | ||
231 | void __init ed_setup(char *str, int *ints) | |
232 | { | |
233 | int hdind = 0; | |
234 | ||
235 | /* handles 3 parameters only - corresponding to | |
236 | 1. Number of cylinders | |
237 | 2. Number of heads | |
238 | 3. Sectors/track | |
239 | */ | |
240 | ||
241 | if (ints[0] != 3) | |
242 | return; | |
243 | ||
244 | /* print out the information - seen at boot time */ | |
245 | printk("%s: ints[0]=%d ints[1]=%d ints[2]=%d ints[3]=%d\n", | |
246 | DEVICE_NAME, ints[0], ints[1], ints[2], ints[3]); | |
247 | ||
248 | /* set the index into device specific information table */ | |
249 | if (ps2esdi_info[0].head != 0) | |
250 | hdind = 1; | |
251 | ||
252 | /* set up all the device information */ | |
253 | ps2esdi_info[hdind].head = ints[2]; | |
254 | ps2esdi_info[hdind].sect = ints[3]; | |
255 | ps2esdi_info[hdind].cyl = ints[1]; | |
256 | ps2esdi_info[hdind].wpcom = 0; | |
257 | ps2esdi_info[hdind].lzone = ints[1]; | |
258 | ps2esdi_info[hdind].ctl = (ints[2] > 8 ? 8 : 0); | |
259 | #if 0 /* this may be needed for PS2/Mod.80, but it hurts ThinkPad! */ | |
260 | ps2esdi_drives = hdind + 1; /* increment index for the next time */ | |
261 | #endif | |
262 | } /* ed_setup */ | |
263 | ||
264 | static int ps2esdi_getinfo(char *buf, int slot, void *d) | |
265 | { | |
266 | int len = 0; | |
267 | ||
268 | len += sprintf(buf + len, "DMA Arbitration Level: %d\n", | |
269 | dma_arb_level); | |
270 | len += sprintf(buf + len, "IO Port: %x\n", io_base); | |
271 | len += sprintf(buf + len, "IRQ: 14\n"); | |
272 | len += sprintf(buf + len, "Drives: %d\n", ps2esdi_drives); | |
273 | ||
274 | return len; | |
275 | } | |
276 | ||
277 | /* ps2 esdi specific initialization - called thru the gendisk chain */ | |
278 | static int __init ps2esdi_geninit(void) | |
279 | { | |
280 | /* | |
281 | The first part contains the initialization code | |
282 | for the ESDI disk subsystem. All we really do | |
283 | is search for the POS registers of the controller | |
284 | to do some simple setup operations. First, we | |
285 | must ensure that the controller is installed, | |
286 | enabled, and configured as PRIMARY. Then we must | |
287 | determine the DMA arbitration level being used by | |
288 | the controller so we can handle data transfer | |
289 | operations properly. If all of this works, then | |
290 | we will set the INIT_FLAG to a non-zero value. | |
291 | */ | |
292 | ||
293 | int slot = 0, i, reset_start, reset_end; | |
294 | u_char status; | |
295 | unsigned short adapterID; | |
296 | int error = 0; | |
297 | ||
298 | if ((slot = mca_find_adapter(INTG_ESDI_ID, 0)) != MCA_NOTFOUND) { | |
299 | adapterID = INTG_ESDI_ID; | |
300 | printk("%s: integrated ESDI adapter found in slot %d\n", | |
301 | DEVICE_NAME, slot+1); | |
302 | #ifndef MODULE | |
303 | mca_set_adapter_name(slot, "PS/2 Integrated ESDI"); | |
304 | #endif | |
305 | } else if ((slot = mca_find_adapter(NRML_ESDI_ID, 0)) != -1) { | |
306 | adapterID = NRML_ESDI_ID; | |
307 | printk("%s: normal ESDI adapter found in slot %d\n", | |
308 | DEVICE_NAME, slot+1); | |
309 | mca_set_adapter_name(slot, "PS/2 ESDI"); | |
310 | } else { | |
311 | return -ENODEV; | |
312 | } | |
313 | ||
314 | ps2esdi_slot = slot; | |
315 | mca_mark_as_used(slot); | |
316 | mca_set_adapter_procfn(slot, (MCA_ProcFn) ps2esdi_getinfo, NULL); | |
317 | ||
318 | /* Found the slot - read the POS register 2 to get the necessary | |
319 | configuration and status information. POS register 2 has the | |
320 | following information : | |
321 | Bit Function | |
322 | 7 reserved = 0 | |
323 | 6 arbitration method | |
324 | 0 - fairness enabled | |
325 | 1 - fairness disabled, linear priority assignment | |
326 | 5-2 arbitration level | |
327 | 1 alternate address | |
328 | 1 alternate address | |
329 | 0 - use addresses 0x3510 - 0x3517 | |
330 | 0 adapter enable | |
331 | */ | |
332 | ||
333 | status = mca_read_stored_pos(slot, 2); | |
334 | /* is it enabled ? */ | |
335 | if (!(status & STATUS_ENABLED)) { | |
336 | printk("%s: ESDI adapter disabled\n", DEVICE_NAME); | |
337 | error = -ENODEV; | |
338 | goto err_out1; | |
339 | } | |
340 | /* try to grab IRQ, and try to grab a slow IRQ if it fails, so we can | |
341 | share with the SCSI driver */ | |
342 | if (request_irq(PS2ESDI_IRQ, ps2esdi_interrupt_handler, | |
69ab3912 | 343 | IRQF_DISABLED | IRQF_SHARED, "PS/2 ESDI", &ps2esdi_gendisk) |
1da177e4 | 344 | && request_irq(PS2ESDI_IRQ, ps2esdi_interrupt_handler, |
69ab3912 | 345 | IRQF_SHARED, "PS/2 ESDI", &ps2esdi_gendisk) |
1da177e4 LT |
346 | ) { |
347 | printk("%s: Unable to get IRQ %d\n", DEVICE_NAME, PS2ESDI_IRQ); | |
348 | error = -EBUSY; | |
349 | goto err_out1; | |
350 | } | |
351 | if (status & STATUS_ALTERNATE) | |
352 | io_base = ALT_IO_BASE; | |
353 | else | |
354 | io_base = PRIMARY_IO_BASE; | |
355 | ||
356 | if (!request_region(io_base, 4, "ed")) { | |
357 | printk(KERN_WARNING"Unable to request region 0x%x\n", io_base); | |
358 | error = -EBUSY; | |
359 | goto err_out2; | |
360 | } | |
361 | /* get the dma arbitration level */ | |
362 | dma_arb_level = (status >> 2) & 0xf; | |
363 | ||
364 | /* BA */ | |
365 | printk("%s: DMA arbitration level : %d\n", | |
366 | DEVICE_NAME, dma_arb_level); | |
367 | ||
368 | LITE_ON; | |
369 | current_int_handler = ps2esdi_initial_reset_int_handler; | |
370 | reset_ctrl(); | |
371 | reset_status = 0; | |
372 | reset_start = jiffies; | |
373 | while (!reset_status) { | |
374 | init_timer(&esdi_timer); | |
375 | esdi_timer.expires = jiffies + HZ; | |
376 | esdi_timer.data = 0; | |
377 | add_timer(&esdi_timer); | |
378 | sleep_on(&ps2esdi_int); | |
379 | } | |
380 | reset_end = jiffies; | |
381 | LITE_OFF; | |
382 | printk("%s: reset interrupt after %d jiffies, %u.%02u secs\n", | |
383 | DEVICE_NAME, reset_end - reset_start, (reset_end - reset_start) / HZ, | |
384 | (reset_end - reset_start) % HZ); | |
385 | ||
386 | ||
387 | /* Integrated ESDI Disk and Controller has only one drive! */ | |
388 | if (adapterID == INTG_ESDI_ID) {/* if not "normal" PS2 ESDI adapter */ | |
389 | ps2esdi_drives = 1; /* then we have only one physical disk! */ intg_esdi = 1; | |
390 | } | |
391 | ||
392 | ||
393 | ||
394 | /* finally this part sets up some global data structures etc. */ | |
395 | ||
396 | ps2esdi_get_device_cfg(); | |
397 | ||
398 | /* some annoyance in the above routine returns TWO drives? | |
399 | Is something else happining in the background? | |
400 | Regaurdless we fix the # of drives again. AJK */ | |
401 | /* Integrated ESDI Disk and Controller has only one drive! */ | |
402 | if (adapterID == INTG_ESDI_ID) /* if not "normal" PS2 ESDI adapter */ | |
403 | ps2esdi_drives = 1; /* Not three or two, ONE DAMNIT! */ | |
404 | ||
405 | current_int_handler = ps2esdi_normal_interrupt_handler; | |
406 | ||
407 | if (request_dma(dma_arb_level, "ed") !=0) { | |
408 | printk(KERN_WARNING "PS2ESDI: Can't request dma-channel %d\n" | |
409 | ,(int) dma_arb_level); | |
410 | error = -EBUSY; | |
411 | goto err_out3; | |
412 | } | |
413 | blk_queue_max_sectors(ps2esdi_queue, 128); | |
414 | ||
415 | error = -ENOMEM; | |
416 | for (i = 0; i < ps2esdi_drives; i++) { | |
417 | struct gendisk *disk = alloc_disk(64); | |
418 | if (!disk) | |
419 | goto err_out4; | |
420 | disk->major = PS2ESDI_MAJOR; | |
421 | disk->first_minor = i<<6; | |
422 | sprintf(disk->disk_name, "ed%c", 'a'+i); | |
1da177e4 LT |
423 | disk->fops = &ps2esdi_fops; |
424 | ps2esdi_gendisk[i] = disk; | |
425 | } | |
426 | ||
427 | for (i = 0; i < ps2esdi_drives; i++) { | |
428 | struct gendisk *disk = ps2esdi_gendisk[i]; | |
429 | set_capacity(disk, ps2esdi_info[i].head * ps2esdi_info[i].sect * | |
430 | ps2esdi_info[i].cyl); | |
431 | disk->queue = ps2esdi_queue; | |
432 | disk->private_data = &ps2esdi_info[i]; | |
433 | add_disk(disk); | |
434 | } | |
435 | return 0; | |
436 | err_out4: | |
437 | while (i--) | |
438 | put_disk(ps2esdi_gendisk[i]); | |
439 | err_out3: | |
440 | release_region(io_base, 4); | |
441 | err_out2: | |
442 | free_irq(PS2ESDI_IRQ, &ps2esdi_gendisk); | |
443 | err_out1: | |
444 | if(ps2esdi_slot) { | |
445 | mca_mark_as_unused(ps2esdi_slot); | |
446 | mca_set_adapter_procfn(ps2esdi_slot, NULL, NULL); | |
447 | } | |
448 | return error; | |
449 | } | |
450 | ||
451 | static void __init ps2esdi_get_device_cfg(void) | |
452 | { | |
453 | u_short cmd_blk[TYPE_0_CMD_BLK_LENGTH]; | |
454 | ||
455 | /*BA */ printk("%s: Drive 0\n", DEVICE_NAME); | |
456 | current_int_handler = ps2esdi_geometry_int_handler; | |
457 | cmd_blk[0] = CMD_GET_DEV_CONFIG | 0x600; | |
458 | cmd_blk[1] = 0; | |
459 | no_int_yet = TRUE; | |
460 | ps2esdi_out_cmd_blk(cmd_blk); | |
461 | if (no_int_yet) | |
462 | sleep_on(&ps2esdi_int); | |
463 | ||
464 | if (ps2esdi_drives > 1) { | |
465 | printk("%s: Drive 1\n", DEVICE_NAME); /*BA */ | |
466 | cmd_blk[0] = CMD_GET_DEV_CONFIG | (1 << 5) | 0x600; | |
467 | cmd_blk[1] = 0; | |
468 | no_int_yet = TRUE; | |
469 | ps2esdi_out_cmd_blk(cmd_blk); | |
470 | if (no_int_yet) | |
471 | sleep_on(&ps2esdi_int); | |
472 | } /* if second physical drive is present */ | |
473 | return; | |
474 | } | |
475 | ||
476 | /* strategy routine that handles most of the IO requests */ | |
477 | static void do_ps2esdi_request(request_queue_t * q) | |
478 | { | |
479 | struct request *req; | |
480 | /* since, this routine is called with interrupts cleared - they | |
481 | must be before it finishes */ | |
482 | ||
483 | req = elv_next_request(q); | |
484 | if (!req) | |
485 | return; | |
486 | ||
487 | #if 0 | |
488 | printk("%s:got request. device : %s command : %d sector : %ld count : %ld, buffer: %p\n", | |
489 | DEVICE_NAME, | |
490 | req->rq_disk->disk_name, | |
491 | req->cmd, req->sector, | |
492 | req->current_nr_sectors, req->buffer); | |
493 | #endif | |
494 | ||
495 | /* check for above 16Mb dmas */ | |
496 | if (isa_virt_to_bus(req->buffer + req->current_nr_sectors * 512) > 16 * MB) { | |
497 | printk("%s: DMA above 16MB not supported\n", DEVICE_NAME); | |
498 | end_request(req, FAIL); | |
499 | return; | |
500 | } | |
501 | ||
502 | if (req->sector+req->current_nr_sectors > get_capacity(req->rq_disk)) { | |
503 | printk("Grrr. error. ps2esdi_drives: %d, %llu %llu\n", | |
504 | ps2esdi_drives, req->sector, | |
505 | (unsigned long long)get_capacity(req->rq_disk)); | |
506 | end_request(req, FAIL); | |
507 | return; | |
508 | } | |
509 | ||
510 | switch (rq_data_dir(req)) { | |
511 | case READ: | |
512 | ps2esdi_readwrite(READ, req); | |
513 | break; | |
514 | case WRITE: | |
515 | ps2esdi_readwrite(WRITE, req); | |
516 | break; | |
517 | default: | |
518 | printk("%s: Unknown command\n", req->rq_disk->disk_name); | |
519 | end_request(req, FAIL); | |
520 | break; | |
521 | } /* handle different commands */ | |
522 | } /* main strategy routine */ | |
523 | ||
524 | /* resets the ESDI adapter */ | |
525 | static void reset_ctrl(void) | |
526 | { | |
527 | ||
528 | u_long expire; | |
529 | u_short status; | |
530 | ||
531 | /* enable interrupts on the controller */ | |
532 | status = inb(ESDI_INTRPT); | |
533 | outb((status & 0xe0) | ATT_EOI, ESDI_ATTN); /* to be sure we don't have | |
534 | any interrupt pending... */ | |
535 | outb_p(CTRL_ENABLE_INTR, ESDI_CONTROL); | |
536 | ||
537 | /* read the ESDI status port - if the controller is not busy, | |
538 | simply do a soft reset (fast) - otherwise we'll have to do a | |
539 | hard (slow) reset. */ | |
540 | if (!(inb_p(ESDI_STATUS) & STATUS_BUSY)) { | |
541 | /*BA */ printk("%s: soft reset...\n", DEVICE_NAME); | |
542 | outb_p(CTRL_SOFT_RESET, ESDI_ATTN); | |
543 | } | |
544 | /* soft reset */ | |
545 | else { | |
546 | /*BA */ | |
547 | printk("%s: hard reset...\n", DEVICE_NAME); | |
548 | outb_p(CTRL_HARD_RESET, ESDI_CONTROL); | |
549 | expire = jiffies + 2*HZ; | |
550 | while (time_before(jiffies, expire)); | |
551 | outb_p(1, ESDI_CONTROL); | |
552 | } /* hard reset */ | |
553 | ||
554 | ||
555 | } /* reset the controller */ | |
556 | ||
557 | /* called by the strategy routine to handle read and write requests */ | |
558 | static void ps2esdi_readwrite(int cmd, struct request *req) | |
559 | { | |
560 | struct ps2esdi_i_struct *p = req->rq_disk->private_data; | |
561 | unsigned block = req->sector; | |
562 | unsigned count = req->current_nr_sectors; | |
563 | int drive = p - ps2esdi_info; | |
564 | u_short track, head, cylinder, sector; | |
565 | u_short cmd_blk[TYPE_1_CMD_BLK_LENGTH]; | |
566 | ||
567 | /* do some relevant arithmatic */ | |
568 | track = block / p->sect; | |
569 | head = track % p->head; | |
570 | cylinder = track / p->head; | |
571 | sector = block % p->sect; | |
572 | ||
573 | #if 0 | |
574 | printk("%s: cyl=%d head=%d sect=%d\n", DEVICE_NAME, cylinder, head, sector); | |
575 | #endif | |
576 | /* call the routine that actually fills out a command block */ | |
577 | ps2esdi_fill_cmd_block | |
578 | (cmd_blk, | |
579 | (cmd == READ) ? CMD_READ : CMD_WRITE, | |
580 | cylinder, head, sector, count, drive); | |
581 | ||
582 | /* send the command block to the controller */ | |
583 | current_req = req; | |
584 | spin_unlock_irq(&ps2esdi_lock); | |
585 | if (ps2esdi_out_cmd_blk(cmd_blk)) { | |
586 | spin_lock_irq(&ps2esdi_lock); | |
587 | printk("%s: Controller failed\n", DEVICE_NAME); | |
588 | if ((++req->errors) >= MAX_RETRIES) | |
589 | end_request(req, FAIL); | |
590 | } | |
591 | /* check for failure to put out the command block */ | |
592 | else { | |
593 | spin_lock_irq(&ps2esdi_lock); | |
594 | #if 0 | |
595 | printk("%s: waiting for xfer\n", DEVICE_NAME); | |
596 | #endif | |
597 | /* turn disk lights on */ | |
598 | LITE_ON; | |
599 | } | |
600 | ||
601 | } /* ps2esdi_readwrite */ | |
602 | ||
603 | /* fill out the command block */ | |
604 | static void ps2esdi_fill_cmd_block(u_short * cmd_blk, u_short cmd, | |
605 | u_short cyl, u_short head, u_short sector, u_short length, u_char drive) | |
606 | { | |
607 | ||
608 | cmd_blk[0] = (drive << 5) | cmd; | |
609 | cmd_blk[1] = length; | |
610 | cmd_blk[2] = ((cyl & 0x1f) << 11) | (head << 5) | sector; | |
611 | cmd_blk[3] = (cyl & 0x3E0) >> 5; | |
612 | ||
613 | } /* fill out the command block */ | |
614 | ||
615 | /* write a command block to the controller */ | |
616 | static int ps2esdi_out_cmd_blk(u_short * cmd_blk) | |
617 | { | |
618 | ||
619 | int i; | |
620 | unsigned long jif; | |
621 | u_char status; | |
622 | ||
623 | /* enable interrupts */ | |
624 | outb(CTRL_ENABLE_INTR, ESDI_CONTROL); | |
625 | ||
626 | /* do not write to the controller, if it is busy */ | |
627 | for (jif = jiffies + ESDI_STAT_TIMEOUT; | |
628 | time_after(jif, jiffies) && | |
629 | (inb(ESDI_STATUS) & STATUS_BUSY); ) | |
630 | ; | |
631 | ||
632 | #if 0 | |
633 | printk("%s: i(1)=%ld\n", DEVICE_NAME, jif); | |
634 | #endif | |
635 | ||
636 | /* if device is still busy - then just time out */ | |
637 | if (inb(ESDI_STATUS) & STATUS_BUSY) { | |
638 | printk("%s: ps2esdi_out_cmd timed out (1)\n", DEVICE_NAME); | |
639 | return ERROR; | |
640 | } /* timeout ??? */ | |
641 | /* Set up the attention register in the controller */ | |
642 | outb(((*cmd_blk) & 0xE0) | 1, ESDI_ATTN); | |
643 | ||
644 | #if 0 | |
645 | printk("%s: sending %d words to controller\n", DEVICE_NAME, (((*cmd_blk) >> 14) + 1) << 1); | |
646 | #endif | |
647 | ||
648 | /* one by one send each word out */ | |
649 | for (i = (((*cmd_blk) >> 14) + 1) << 1; i; i--) { | |
650 | status = inb(ESDI_STATUS); | |
651 | for (jif = jiffies + ESDI_STAT_TIMEOUT; | |
652 | time_after(jif, jiffies) && (status & STATUS_BUSY) && | |
653 | (status & STATUS_CMD_INF); status = inb(ESDI_STATUS)); | |
654 | if ((status & (STATUS_BUSY | STATUS_CMD_INF)) == STATUS_BUSY) { | |
655 | #if 0 | |
656 | printk("%s: sending %04X\n", DEVICE_NAME, *cmd_blk); | |
657 | #endif | |
658 | outw(*cmd_blk++, ESDI_CMD_INT); | |
659 | } else { | |
660 | printk("%s: ps2esdi_out_cmd timed out while sending command (status=%02X)\n", | |
661 | DEVICE_NAME, status); | |
662 | return ERROR; | |
663 | } | |
664 | } /* send all words out */ | |
665 | return OK; | |
666 | } /* send out the commands */ | |
667 | ||
668 | ||
669 | /* prepare for dma - do all the necessary setup */ | |
670 | static void ps2esdi_prep_dma(char *buffer, u_short length, u_char dma_xmode) | |
671 | { | |
672 | unsigned long flags = claim_dma_lock(); | |
673 | ||
674 | mca_disable_dma(dma_arb_level); | |
675 | ||
676 | mca_set_dma_addr(dma_arb_level, isa_virt_to_bus(buffer)); | |
677 | ||
678 | mca_set_dma_count(dma_arb_level, length * 512 / 2); | |
679 | ||
680 | mca_set_dma_mode(dma_arb_level, dma_xmode); | |
681 | ||
682 | mca_enable_dma(dma_arb_level); | |
683 | ||
684 | release_dma_lock(flags); | |
685 | ||
686 | } /* prepare for dma */ | |
687 | ||
688 | ||
689 | ||
690 | static irqreturn_t ps2esdi_interrupt_handler(int irq, void *dev_id, | |
691 | struct pt_regs *regs) | |
692 | { | |
693 | u_int int_ret_code; | |
694 | ||
695 | if (inb(ESDI_STATUS) & STATUS_INTR) { | |
696 | int_ret_code = inb(ESDI_INTRPT); | |
697 | if (current_int_handler) { | |
698 | /* Disable adapter interrupts till processing is finished */ | |
699 | outb(CTRL_DISABLE_INTR, ESDI_CONTROL); | |
700 | current_int_handler(int_ret_code); | |
701 | } else | |
702 | printk("%s: help ! No interrupt handler.\n", DEVICE_NAME); | |
703 | } else { | |
704 | return IRQ_NONE; | |
705 | } | |
706 | return IRQ_HANDLED; | |
707 | } | |
708 | ||
709 | static void ps2esdi_initial_reset_int_handler(u_int int_ret_code) | |
710 | { | |
711 | ||
712 | switch (int_ret_code & 0xf) { | |
713 | case INT_RESET: | |
714 | /*BA */ | |
715 | printk("%s: initial reset completed.\n", DEVICE_NAME); | |
716 | outb((int_ret_code & 0xe0) | ATT_EOI, ESDI_ATTN); | |
717 | wake_up(&ps2esdi_int); | |
718 | break; | |
719 | case INT_ATTN_ERROR: | |
720 | printk("%s: Attention error. interrupt status : %02X\n", DEVICE_NAME, | |
721 | int_ret_code); | |
722 | printk("%s: status: %02x\n", DEVICE_NAME, inb(ESDI_STATUS)); | |
723 | break; | |
724 | default: | |
725 | printk("%s: initial reset handler received interrupt: %02X\n", | |
726 | DEVICE_NAME, int_ret_code); | |
727 | outb((int_ret_code & 0xe0) | ATT_EOI, ESDI_ATTN); | |
728 | break; | |
729 | } | |
730 | outb(CTRL_ENABLE_INTR, ESDI_CONTROL); | |
731 | } | |
732 | ||
733 | ||
734 | static void ps2esdi_geometry_int_handler(u_int int_ret_code) | |
735 | { | |
736 | u_int status, drive_num; | |
737 | unsigned long rba; | |
738 | int i; | |
739 | ||
740 | drive_num = int_ret_code >> 5; | |
741 | switch (int_ret_code & 0xf) { | |
742 | case INT_CMD_COMPLETE: | |
743 | for (i = ESDI_TIMEOUT; i && !(inb(ESDI_STATUS) & STATUS_STAT_AVAIL); i--); | |
744 | if (!(inb(ESDI_STATUS) & STATUS_STAT_AVAIL)) { | |
745 | printk("%s: timeout reading status word\n", DEVICE_NAME); | |
746 | outb((int_ret_code & 0xe0) | ATT_EOI, ESDI_ATTN); | |
747 | break; | |
748 | } | |
749 | status = inw(ESDI_STT_INT); | |
750 | if ((status & 0x1F) == CMD_GET_DEV_CONFIG) { | |
751 | #define REPLY_WORDS 5 /* we already read word 0 */ | |
752 | u_short reply[REPLY_WORDS]; | |
753 | ||
754 | if (ps2esdi_read_status_words((status >> 8) - 1, REPLY_WORDS, reply)) { | |
755 | /*BA */ | |
756 | printk("%s: Device Configuration Status for drive %u\n", | |
757 | DEVICE_NAME, drive_num); | |
758 | ||
759 | printk("%s: Spares/cyls: %u", DEVICE_NAME, reply[0] >> 8); | |
760 | ||
761 | printk | |
762 | ("Config bits: %s%s%s%s%s\n", | |
763 | (reply[0] & CONFIG_IS) ? "Invalid Secondary, " : "", | |
764 | ((reply[0] & CONFIG_ZD) && !(reply[0] & CONFIG_IS)) | |
765 | ? "Zero Defect, " : "Defects Present, ", | |
766 | (reply[0] & CONFIG_SF) ? "Skewed Format, " : "", | |
767 | (reply[0] & CONFIG_FR) ? "Removable, " : "Non-Removable, ", | |
768 | (reply[0] & CONFIG_RT) ? "No Retries" : "Retries"); | |
769 | ||
770 | rba = reply[1] | ((unsigned long) reply[2] << 16); | |
771 | printk("%s: Number of RBA's: %lu\n", DEVICE_NAME, rba); | |
772 | ||
773 | printk("%s: Physical number of cylinders: %u, Sectors/Track: %u, Heads: %u\n", | |
774 | DEVICE_NAME, reply[3], reply[4] >> 8, reply[4] & 0xff); | |
775 | ||
776 | if (!ps2esdi_info[drive_num].head) { | |
777 | ps2esdi_info[drive_num].head = 64; | |
778 | ps2esdi_info[drive_num].sect = 32; | |
779 | ps2esdi_info[drive_num].cyl = rba / (64 * 32); | |
780 | ps2esdi_info[drive_num].wpcom = 0; | |
781 | ps2esdi_info[drive_num].lzone = ps2esdi_info[drive_num].cyl; | |
782 | ps2esdi_info[drive_num].ctl = 8; | |
783 | if (tp720esdi) { /* store the retrieved parameters */ | |
784 | ps2esdi_info[0].head = reply[4] & 0Xff; | |
785 | ps2esdi_info[0].sect = reply[4] >> 8; | |
786 | ps2esdi_info[0].cyl = reply[3]; | |
787 | ps2esdi_info[0].wpcom = 0; | |
788 | ps2esdi_info[0].lzone = reply[3]; | |
789 | } else { | |
790 | if (!intg_esdi) | |
791 | ps2esdi_drives++; | |
792 | } | |
793 | } | |
794 | #ifdef OBSOLETE | |
795 | if (!ps2esdi_info[drive_num].head) { | |
796 | ps2esdi_info[drive_num].head = reply[4] & 0Xff; | |
797 | ps2esdi_info[drive_num].sect = reply[4] >> 8; | |
798 | ps2esdi_info[drive_num].cyl = reply[3]; | |
799 | ps2esdi_info[drive_num].wpcom = 0; | |
800 | ps2esdi_info[drive_num].lzone = reply[3]; | |
801 | if (tp720esdi) { /* store the retrieved parameters */ | |
802 | ps2esdi_info[0].head = reply[4] & 0Xff; | |
803 | ps2esdi_info[0].sect = reply[4] >> 8; | |
804 | ps2esdi_info[0].cyl = reply[3]; | |
805 | ps2esdi_info[0].wpcom = 0; | |
806 | ps2esdi_info[0].lzone = reply[3]; | |
807 | } else { | |
808 | ps2esdi_drives++; | |
809 | } | |
810 | } | |
811 | #endif | |
812 | ||
813 | } else | |
814 | printk("%s: failed while getting device config\n", DEVICE_NAME); | |
815 | #undef REPLY_WORDS | |
816 | } else | |
817 | printk("%s: command %02X unknown by geometry handler\n", | |
818 | DEVICE_NAME, status & 0x1f); | |
819 | ||
820 | outb((int_ret_code & 0xe0) | ATT_EOI, ESDI_ATTN); | |
821 | break; | |
822 | ||
823 | case INT_ATTN_ERROR: | |
824 | printk("%s: Attention error. interrupt status : %02X\n", DEVICE_NAME, | |
825 | int_ret_code); | |
826 | printk("%s: Device not available\n", DEVICE_NAME); | |
827 | break; | |
828 | case INT_CMD_ECC: | |
829 | case INT_CMD_RETRY: | |
830 | case INT_CMD_ECC_RETRY: | |
831 | case INT_CMD_WARNING: | |
832 | case INT_CMD_ABORT: | |
833 | case INT_CMD_FAILED: | |
834 | case INT_DMA_ERR: | |
835 | case INT_CMD_BLK_ERR: | |
836 | /*BA */ printk("%s: Whaa. Error occurred...\n", DEVICE_NAME); | |
837 | dump_cmd_complete_status(int_ret_code); | |
838 | outb((int_ret_code & 0xe0) | ATT_EOI, ESDI_ATTN); | |
839 | break; | |
840 | default: | |
841 | printk("%s: Unknown interrupt reason: %02X\n", | |
842 | DEVICE_NAME, int_ret_code & 0xf); | |
843 | outb((int_ret_code & 0xe0) | ATT_EOI, ESDI_ATTN); | |
844 | break; | |
845 | } | |
846 | ||
847 | wake_up(&ps2esdi_int); | |
848 | no_int_yet = FALSE; | |
849 | outb(CTRL_ENABLE_INTR, ESDI_CONTROL); | |
850 | ||
851 | } | |
852 | ||
853 | static void ps2esdi_normal_interrupt_handler(u_int int_ret_code) | |
854 | { | |
855 | unsigned long flags; | |
856 | u_int status; | |
857 | u_int ending; | |
858 | int i; | |
859 | ||
860 | switch (int_ret_code & 0x0f) { | |
861 | case INT_TRANSFER_REQ: | |
862 | ps2esdi_prep_dma(current_req->buffer, | |
863 | current_req->current_nr_sectors, | |
864 | (rq_data_dir(current_req) == READ) | |
865 | ? MCA_DMA_MODE_16 | MCA_DMA_MODE_WRITE | MCA_DMA_MODE_XFER | |
866 | : MCA_DMA_MODE_16 | MCA_DMA_MODE_READ); | |
867 | outb(CTRL_ENABLE_DMA | CTRL_ENABLE_INTR, ESDI_CONTROL); | |
868 | ending = -1; | |
869 | break; | |
870 | ||
871 | case INT_ATTN_ERROR: | |
872 | printk("%s: Attention error. interrupt status : %02X\n", DEVICE_NAME, | |
873 | int_ret_code); | |
874 | outb(CTRL_ENABLE_INTR, ESDI_CONTROL); | |
875 | ending = FAIL; | |
876 | break; | |
877 | ||
878 | case INT_CMD_COMPLETE: | |
879 | for (i = ESDI_TIMEOUT; i && !(inb(ESDI_STATUS) & STATUS_STAT_AVAIL); i--); | |
880 | if (!(inb(ESDI_STATUS) & STATUS_STAT_AVAIL)) { | |
881 | printk("%s: timeout reading status word\n", DEVICE_NAME); | |
882 | outb((int_ret_code & 0xe0) | ATT_EOI, ESDI_ATTN); | |
883 | outb(CTRL_ENABLE_INTR, ESDI_CONTROL); | |
884 | if ((++current_req->errors) >= MAX_RETRIES) | |
885 | ending = FAIL; | |
886 | else | |
887 | ending = -1; | |
888 | break; | |
889 | } | |
890 | status = inw(ESDI_STT_INT); | |
891 | switch (status & 0x1F) { | |
892 | case (CMD_READ & 0xff): | |
893 | case (CMD_WRITE & 0xff): | |
894 | LITE_OFF; | |
895 | outb((int_ret_code & 0xe0) | ATT_EOI, ESDI_ATTN); | |
896 | outb(CTRL_ENABLE_INTR, ESDI_CONTROL); | |
897 | ending = SUCCES; | |
898 | break; | |
899 | default: | |
900 | printk("%s: interrupt for unknown command %02X\n", | |
901 | DEVICE_NAME, status & 0x1f); | |
902 | outb((int_ret_code & 0xe0) | ATT_EOI, ESDI_ATTN); | |
903 | outb(CTRL_ENABLE_INTR, ESDI_CONTROL); | |
904 | ending = -1; | |
905 | break; | |
906 | } | |
907 | break; | |
908 | case INT_CMD_ECC: | |
909 | case INT_CMD_RETRY: | |
910 | case INT_CMD_ECC_RETRY: | |
911 | LITE_OFF; | |
912 | dump_cmd_complete_status(int_ret_code); | |
913 | outb((int_ret_code & 0xe0) | ATT_EOI, ESDI_ATTN); | |
914 | outb(CTRL_ENABLE_INTR, ESDI_CONTROL); | |
915 | ending = SUCCES; | |
916 | break; | |
917 | case INT_CMD_WARNING: | |
918 | case INT_CMD_ABORT: | |
919 | case INT_CMD_FAILED: | |
920 | case INT_DMA_ERR: | |
921 | LITE_OFF; | |
922 | dump_cmd_complete_status(int_ret_code); | |
923 | outb((int_ret_code & 0xe0) | ATT_EOI, ESDI_ATTN); | |
924 | outb(CTRL_ENABLE_INTR, ESDI_CONTROL); | |
925 | if ((++current_req->errors) >= MAX_RETRIES) | |
926 | ending = FAIL; | |
927 | else | |
928 | ending = -1; | |
929 | break; | |
930 | ||
931 | case INT_CMD_BLK_ERR: | |
932 | dump_cmd_complete_status(int_ret_code); | |
933 | outb((int_ret_code & 0xe0) | ATT_EOI, ESDI_ATTN); | |
934 | outb(CTRL_ENABLE_INTR, ESDI_CONTROL); | |
935 | ending = FAIL; | |
936 | break; | |
937 | ||
938 | case INT_CMD_FORMAT: | |
939 | printk("%s: huh ? Who issued this format command ?\n" | |
940 | ,DEVICE_NAME); | |
941 | outb((int_ret_code & 0xe0) | ATT_EOI, ESDI_ATTN); | |
942 | outb(CTRL_ENABLE_INTR, ESDI_CONTROL); | |
943 | ending = -1; | |
944 | break; | |
945 | ||
946 | case INT_RESET: | |
947 | /* BA printk("%s: reset completed.\n", DEVICE_NAME) */ ; | |
948 | outb((int_ret_code & 0xe0) | ATT_EOI, ESDI_ATTN); | |
949 | outb(CTRL_ENABLE_INTR, ESDI_CONTROL); | |
950 | ending = -1; | |
951 | break; | |
952 | ||
953 | default: | |
954 | printk("%s: Unknown interrupt reason: %02X\n", | |
955 | DEVICE_NAME, int_ret_code & 0xf); | |
956 | outb((int_ret_code & 0xe0) | ATT_EOI, ESDI_ATTN); | |
957 | outb(CTRL_ENABLE_INTR, ESDI_CONTROL); | |
958 | ending = -1; | |
959 | break; | |
960 | } | |
961 | if(ending != -1) { | |
962 | spin_lock_irqsave(&ps2esdi_lock, flags); | |
963 | end_request(current_req, ending); | |
964 | current_req = NULL; | |
965 | do_ps2esdi_request(ps2esdi_queue); | |
966 | spin_unlock_irqrestore(&ps2esdi_lock, flags); | |
967 | } | |
968 | } /* handle interrupts */ | |
969 | ||
970 | ||
971 | ||
972 | static int ps2esdi_read_status_words(int num_words, | |
973 | int max_words, | |
974 | u_short * buffer) | |
975 | { | |
976 | int i; | |
977 | ||
978 | for (; max_words && num_words; max_words--, num_words--, buffer++) { | |
979 | for (i = ESDI_TIMEOUT; i && !(inb(ESDI_STATUS) & STATUS_STAT_AVAIL); i--); | |
980 | if (!(inb(ESDI_STATUS) & STATUS_STAT_AVAIL)) { | |
981 | printk("%s: timeout reading status word\n", DEVICE_NAME); | |
982 | return FAIL; | |
983 | } | |
984 | *buffer = inw(ESDI_STT_INT); | |
985 | } | |
986 | return SUCCES; | |
987 | } | |
988 | ||
989 | ||
990 | ||
991 | ||
992 | static void dump_cmd_complete_status(u_int int_ret_code) | |
993 | { | |
994 | #define WAIT_FOR_STATUS \ | |
995 | for(i=ESDI_TIMEOUT;i && !(inb(ESDI_STATUS) & STATUS_STAT_AVAIL);i--); \ | |
996 | if(!(inb(ESDI_STATUS) & STATUS_STAT_AVAIL)) { \ | |
997 | printk("%s: timeout reading status word\n",DEVICE_NAME); \ | |
998 | return; \ | |
999 | } | |
1000 | ||
1001 | int i, word_count; | |
1002 | u_short stat_word; | |
1003 | u_long rba; | |
1004 | ||
1005 | printk("%s: Device: %u, interrupt ID: %02X\n", | |
1006 | DEVICE_NAME, int_ret_code >> 5, | |
1007 | int_ret_code & 0xf); | |
1008 | ||
1009 | WAIT_FOR_STATUS; | |
1010 | stat_word = inw(ESDI_STT_INT); | |
1011 | word_count = (stat_word >> 8) - 1; | |
1012 | printk("%s: %u status words, command: %02X\n", DEVICE_NAME, word_count, | |
1013 | stat_word & 0xff); | |
1014 | ||
1015 | if (word_count--) { | |
1016 | WAIT_FOR_STATUS; | |
1017 | stat_word = inw(ESDI_STT_INT); | |
1018 | printk("%s: command status code: %02X, command error code: %02X\n", | |
1019 | DEVICE_NAME, stat_word >> 8, stat_word & 0xff); | |
1020 | } | |
1021 | if (word_count--) { | |
1022 | WAIT_FOR_STATUS; | |
1023 | stat_word = inw(ESDI_STT_INT); | |
1024 | printk("%s: device error code: %s%s%s%s%s,%02X\n", DEVICE_NAME, | |
1025 | (stat_word & 0x1000) ? "Ready, " : "Not Ready, ", | |
1026 | (stat_word & 0x0800) ? "Selected, " : "Not Selected, ", | |
1027 | (stat_word & 0x0400) ? "Write Fault, " : "", | |
1028 | (stat_word & 0x0200) ? "Track 0, " : "", | |
1029 | (stat_word & 0x0100) ? "Seek or command complete, " : "", | |
1030 | stat_word >> 8); | |
1031 | } | |
1032 | if (word_count--) { | |
1033 | WAIT_FOR_STATUS; | |
1034 | stat_word = inw(ESDI_STT_INT); | |
1035 | printk("%s: Blocks to do: %u", DEVICE_NAME, stat_word); | |
1036 | } | |
1037 | if (word_count -= 2) { | |
1038 | WAIT_FOR_STATUS; | |
1039 | rba = inw(ESDI_STT_INT); | |
1040 | WAIT_FOR_STATUS; | |
1041 | rba |= inw(ESDI_STT_INT) << 16; | |
1042 | printk(", Last Cyl: %u Head: %u Sector: %u\n", | |
1043 | (u_short) ((rba & 0x1ff80000) >> 11), | |
1044 | (u_short) ((rba & 0x7E0) >> 5), (u_short) (rba & 0x1f)); | |
1045 | } else | |
1046 | printk("\n"); | |
1047 | ||
1048 | if (word_count--) { | |
1049 | WAIT_FOR_STATUS; | |
1050 | stat_word = inw(ESDI_STT_INT); | |
1051 | printk("%s: Blocks required ECC: %u", DEVICE_NAME, stat_word); | |
1052 | } | |
1053 | printk("\n"); | |
1054 | ||
1055 | #undef WAIT_FOR_STATUS | |
1056 | ||
1057 | } | |
1058 | ||
a885c8c4 | 1059 | static int ps2esdi_getgeo(struct block_device *bdev, struct hd_geometry *geo) |
1da177e4 | 1060 | { |
a885c8c4 CH |
1061 | struct ps2esdi_i_struct *p = bdev->bd_disk->private_data; |
1062 | ||
1063 | geo->heads = p->head; | |
1064 | geo->sectors = p->sect; | |
1065 | geo->cylinders = p->cyl; | |
1da177e4 LT |
1066 | return 0; |
1067 | } | |
1068 | ||
1069 | static void ps2esdi_reset_timer(unsigned long unused) | |
1070 | { | |
1071 | ||
1072 | int status; | |
1073 | ||
1074 | status = inb(ESDI_INTRPT); | |
1075 | if ((status & 0xf) == INT_RESET) { | |
1076 | outb((status & 0xe0) | ATT_EOI, ESDI_ATTN); | |
1077 | outb(CTRL_ENABLE_INTR, ESDI_CONTROL); | |
1078 | reset_status = 1; | |
1079 | } | |
1080 | wake_up(&ps2esdi_int); | |
1081 | } |