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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 | ||
32 | #include <linux/config.h> | |
33 | #include <linux/major.h> | |
34 | #include <linux/errno.h> | |
35 | #include <linux/wait.h> | |
36 | #include <linux/interrupt.h> | |
37 | #include <linux/fs.h> | |
38 | #include <linux/kernel.h> | |
39 | #include <linux/genhd.h> | |
40 | #include <linux/ps2esdi.h> | |
41 | #include <linux/blkdev.h> | |
42 | #include <linux/mca-legacy.h> | |
43 | #include <linux/init.h> | |
44 | #include <linux/ioport.h> | |
45 | #include <linux/module.h> | |
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); | |
84 | static int ps2esdi_ioctl(struct inode *inode, struct file *file, | |
85 | u_int cmd, u_long arg); | |
86 | ||
87 | static int ps2esdi_read_status_words(int num_words, int max_words, u_short * buffer); | |
88 | ||
89 | static void dump_cmd_complete_status(u_int int_ret_code); | |
90 | ||
91 | static void ps2esdi_get_device_cfg(void); | |
92 | ||
93 | static void ps2esdi_reset_timer(unsigned long unused); | |
94 | ||
95 | static u_int dma_arb_level; /* DMA arbitration level */ | |
96 | ||
97 | static DECLARE_WAIT_QUEUE_HEAD(ps2esdi_int); | |
98 | ||
99 | static int no_int_yet; | |
100 | static int ps2esdi_drives; | |
101 | static u_short io_base; | |
102 | static struct timer_list esdi_timer = | |
103 | TIMER_INITIALIZER(ps2esdi_reset_timer, 0, 0); | |
104 | static int reset_status; | |
105 | static int ps2esdi_slot = -1; | |
106 | static int tp720esdi = 0; /* Is it Integrated ESDI of ThinkPad-720? */ | |
107 | static int intg_esdi = 0; /* If integrated adapter */ | |
108 | struct ps2esdi_i_struct { | |
109 | unsigned int head, sect, cyl, wpcom, lzone, ctl; | |
110 | }; | |
111 | static DEFINE_SPINLOCK(ps2esdi_lock); | |
112 | static struct request_queue *ps2esdi_queue; | |
113 | static struct request *current_req; | |
114 | ||
115 | #if 0 | |
116 | #if 0 /* try both - I don't know which one is better... UB */ | |
117 | static struct ps2esdi_i_struct ps2esdi_info[MAX_HD] = | |
118 | { | |
119 | {4, 48, 1553, 0, 0, 0}, | |
120 | {0, 0, 0, 0, 0, 0}}; | |
121 | #else | |
122 | static struct ps2esdi_i_struct ps2esdi_info[MAX_HD] = | |
123 | { | |
124 | {64, 32, 161, 0, 0, 0}, | |
125 | {0, 0, 0, 0, 0, 0}}; | |
126 | #endif | |
127 | #endif | |
128 | static struct ps2esdi_i_struct ps2esdi_info[MAX_HD] = | |
129 | { | |
130 | {0, 0, 0, 0, 0, 0}, | |
131 | {0, 0, 0, 0, 0, 0}}; | |
132 | ||
133 | static struct block_device_operations ps2esdi_fops = | |
134 | { | |
135 | .owner = THIS_MODULE, | |
136 | .ioctl = ps2esdi_ioctl, | |
137 | }; | |
138 | ||
139 | static struct gendisk *ps2esdi_gendisk[2]; | |
140 | ||
141 | /* initialization routine called by ll_rw_blk.c */ | |
142 | static int __init ps2esdi_init(void) | |
143 | { | |
144 | ||
145 | int error = 0; | |
146 | ||
147 | /* register the device - pass the name and major number */ | |
148 | if (register_blkdev(PS2ESDI_MAJOR, "ed")) | |
149 | return -EBUSY; | |
150 | ||
151 | /* set up some global information - indicating device specific info */ | |
152 | ps2esdi_queue = blk_init_queue(do_ps2esdi_request, &ps2esdi_lock); | |
153 | if (!ps2esdi_queue) { | |
154 | unregister_blkdev(PS2ESDI_MAJOR, "ed"); | |
155 | return -ENOMEM; | |
156 | } | |
157 | ||
158 | /* some minor housekeeping - setup the global gendisk structure */ | |
159 | error = ps2esdi_geninit(); | |
160 | if (error) { | |
161 | printk(KERN_WARNING "PS2ESDI: error initialising" | |
162 | " device, releasing resources\n"); | |
163 | unregister_blkdev(PS2ESDI_MAJOR, "ed"); | |
164 | blk_cleanup_queue(ps2esdi_queue); | |
165 | return error; | |
166 | } | |
167 | return 0; | |
168 | } /* ps2esdi_init */ | |
169 | ||
170 | #ifndef MODULE | |
171 | ||
172 | module_init(ps2esdi_init); | |
173 | ||
174 | #else | |
175 | ||
176 | static int cyl[MAX_HD] = {-1,-1}; | |
177 | static int head[MAX_HD] = {-1, -1}; | |
178 | static int sect[MAX_HD] = {-1, -1}; | |
179 | ||
180 | module_param(tp720esdi, bool, 0); | |
181 | module_param_array(cyl, int, NULL, 0); | |
182 | module_param_array(head, int, NULL, 0); | |
183 | module_param_array(sect, int, NULL, 0); | |
184 | MODULE_LICENSE("GPL"); | |
185 | ||
186 | int init_module(void) { | |
187 | int drive; | |
188 | ||
189 | for(drive = 0; drive < MAX_HD; drive++) { | |
190 | struct ps2esdi_i_struct *info = &ps2esdi_info[drive]; | |
191 | ||
192 | if (cyl[drive] != -1) { | |
193 | info->cyl = info->lzone = cyl[drive]; | |
194 | info->wpcom = 0; | |
195 | } | |
196 | if (head[drive] != -1) { | |
197 | info->head = head[drive]; | |
198 | info->ctl = (head[drive] > 8 ? 8 : 0); | |
199 | } | |
200 | if (sect[drive] != -1) info->sect = sect[drive]; | |
201 | } | |
202 | return ps2esdi_init(); | |
203 | } | |
204 | ||
205 | void | |
206 | cleanup_module(void) { | |
207 | int i; | |
208 | if(ps2esdi_slot) { | |
209 | mca_mark_as_unused(ps2esdi_slot); | |
210 | mca_set_adapter_procfn(ps2esdi_slot, NULL, NULL); | |
211 | } | |
212 | release_region(io_base, 4); | |
213 | free_dma(dma_arb_level); | |
214 | free_irq(PS2ESDI_IRQ, &ps2esdi_gendisk); | |
215 | unregister_blkdev(PS2ESDI_MAJOR, "ed"); | |
216 | blk_cleanup_queue(ps2esdi_queue); | |
217 | for (i = 0; i < ps2esdi_drives; i++) { | |
218 | del_gendisk(ps2esdi_gendisk[i]); | |
219 | put_disk(ps2esdi_gendisk[i]); | |
220 | } | |
221 | } | |
222 | #endif /* MODULE */ | |
223 | ||
224 | /* handles boot time command line parameters */ | |
225 | void __init tp720_setup(char *str, int *ints) | |
226 | { | |
227 | /* no params, just sets the tp720esdi flag if it exists */ | |
228 | ||
229 | printk("%s: TP 720 ESDI flag set\n", DEVICE_NAME); | |
230 | tp720esdi = 1; | |
231 | } | |
232 | ||
233 | void __init ed_setup(char *str, int *ints) | |
234 | { | |
235 | int hdind = 0; | |
236 | ||
237 | /* handles 3 parameters only - corresponding to | |
238 | 1. Number of cylinders | |
239 | 2. Number of heads | |
240 | 3. Sectors/track | |
241 | */ | |
242 | ||
243 | if (ints[0] != 3) | |
244 | return; | |
245 | ||
246 | /* print out the information - seen at boot time */ | |
247 | printk("%s: ints[0]=%d ints[1]=%d ints[2]=%d ints[3]=%d\n", | |
248 | DEVICE_NAME, ints[0], ints[1], ints[2], ints[3]); | |
249 | ||
250 | /* set the index into device specific information table */ | |
251 | if (ps2esdi_info[0].head != 0) | |
252 | hdind = 1; | |
253 | ||
254 | /* set up all the device information */ | |
255 | ps2esdi_info[hdind].head = ints[2]; | |
256 | ps2esdi_info[hdind].sect = ints[3]; | |
257 | ps2esdi_info[hdind].cyl = ints[1]; | |
258 | ps2esdi_info[hdind].wpcom = 0; | |
259 | ps2esdi_info[hdind].lzone = ints[1]; | |
260 | ps2esdi_info[hdind].ctl = (ints[2] > 8 ? 8 : 0); | |
261 | #if 0 /* this may be needed for PS2/Mod.80, but it hurts ThinkPad! */ | |
262 | ps2esdi_drives = hdind + 1; /* increment index for the next time */ | |
263 | #endif | |
264 | } /* ed_setup */ | |
265 | ||
266 | static int ps2esdi_getinfo(char *buf, int slot, void *d) | |
267 | { | |
268 | int len = 0; | |
269 | ||
270 | len += sprintf(buf + len, "DMA Arbitration Level: %d\n", | |
271 | dma_arb_level); | |
272 | len += sprintf(buf + len, "IO Port: %x\n", io_base); | |
273 | len += sprintf(buf + len, "IRQ: 14\n"); | |
274 | len += sprintf(buf + len, "Drives: %d\n", ps2esdi_drives); | |
275 | ||
276 | return len; | |
277 | } | |
278 | ||
279 | /* ps2 esdi specific initialization - called thru the gendisk chain */ | |
280 | static int __init ps2esdi_geninit(void) | |
281 | { | |
282 | /* | |
283 | The first part contains the initialization code | |
284 | for the ESDI disk subsystem. All we really do | |
285 | is search for the POS registers of the controller | |
286 | to do some simple setup operations. First, we | |
287 | must ensure that the controller is installed, | |
288 | enabled, and configured as PRIMARY. Then we must | |
289 | determine the DMA arbitration level being used by | |
290 | the controller so we can handle data transfer | |
291 | operations properly. If all of this works, then | |
292 | we will set the INIT_FLAG to a non-zero value. | |
293 | */ | |
294 | ||
295 | int slot = 0, i, reset_start, reset_end; | |
296 | u_char status; | |
297 | unsigned short adapterID; | |
298 | int error = 0; | |
299 | ||
300 | if ((slot = mca_find_adapter(INTG_ESDI_ID, 0)) != MCA_NOTFOUND) { | |
301 | adapterID = INTG_ESDI_ID; | |
302 | printk("%s: integrated ESDI adapter found in slot %d\n", | |
303 | DEVICE_NAME, slot+1); | |
304 | #ifndef MODULE | |
305 | mca_set_adapter_name(slot, "PS/2 Integrated ESDI"); | |
306 | #endif | |
307 | } else if ((slot = mca_find_adapter(NRML_ESDI_ID, 0)) != -1) { | |
308 | adapterID = NRML_ESDI_ID; | |
309 | printk("%s: normal ESDI adapter found in slot %d\n", | |
310 | DEVICE_NAME, slot+1); | |
311 | mca_set_adapter_name(slot, "PS/2 ESDI"); | |
312 | } else { | |
313 | return -ENODEV; | |
314 | } | |
315 | ||
316 | ps2esdi_slot = slot; | |
317 | mca_mark_as_used(slot); | |
318 | mca_set_adapter_procfn(slot, (MCA_ProcFn) ps2esdi_getinfo, NULL); | |
319 | ||
320 | /* Found the slot - read the POS register 2 to get the necessary | |
321 | configuration and status information. POS register 2 has the | |
322 | following information : | |
323 | Bit Function | |
324 | 7 reserved = 0 | |
325 | 6 arbitration method | |
326 | 0 - fairness enabled | |
327 | 1 - fairness disabled, linear priority assignment | |
328 | 5-2 arbitration level | |
329 | 1 alternate address | |
330 | 1 alternate address | |
331 | 0 - use addresses 0x3510 - 0x3517 | |
332 | 0 adapter enable | |
333 | */ | |
334 | ||
335 | status = mca_read_stored_pos(slot, 2); | |
336 | /* is it enabled ? */ | |
337 | if (!(status & STATUS_ENABLED)) { | |
338 | printk("%s: ESDI adapter disabled\n", DEVICE_NAME); | |
339 | error = -ENODEV; | |
340 | goto err_out1; | |
341 | } | |
342 | /* try to grab IRQ, and try to grab a slow IRQ if it fails, so we can | |
343 | share with the SCSI driver */ | |
344 | if (request_irq(PS2ESDI_IRQ, ps2esdi_interrupt_handler, | |
345 | SA_INTERRUPT | SA_SHIRQ, "PS/2 ESDI", &ps2esdi_gendisk) | |
346 | && request_irq(PS2ESDI_IRQ, ps2esdi_interrupt_handler, | |
347 | SA_SHIRQ, "PS/2 ESDI", &ps2esdi_gendisk) | |
348 | ) { | |
349 | printk("%s: Unable to get IRQ %d\n", DEVICE_NAME, PS2ESDI_IRQ); | |
350 | error = -EBUSY; | |
351 | goto err_out1; | |
352 | } | |
353 | if (status & STATUS_ALTERNATE) | |
354 | io_base = ALT_IO_BASE; | |
355 | else | |
356 | io_base = PRIMARY_IO_BASE; | |
357 | ||
358 | if (!request_region(io_base, 4, "ed")) { | |
359 | printk(KERN_WARNING"Unable to request region 0x%x\n", io_base); | |
360 | error = -EBUSY; | |
361 | goto err_out2; | |
362 | } | |
363 | /* get the dma arbitration level */ | |
364 | dma_arb_level = (status >> 2) & 0xf; | |
365 | ||
366 | /* BA */ | |
367 | printk("%s: DMA arbitration level : %d\n", | |
368 | DEVICE_NAME, dma_arb_level); | |
369 | ||
370 | LITE_ON; | |
371 | current_int_handler = ps2esdi_initial_reset_int_handler; | |
372 | reset_ctrl(); | |
373 | reset_status = 0; | |
374 | reset_start = jiffies; | |
375 | while (!reset_status) { | |
376 | init_timer(&esdi_timer); | |
377 | esdi_timer.expires = jiffies + HZ; | |
378 | esdi_timer.data = 0; | |
379 | add_timer(&esdi_timer); | |
380 | sleep_on(&ps2esdi_int); | |
381 | } | |
382 | reset_end = jiffies; | |
383 | LITE_OFF; | |
384 | printk("%s: reset interrupt after %d jiffies, %u.%02u secs\n", | |
385 | DEVICE_NAME, reset_end - reset_start, (reset_end - reset_start) / HZ, | |
386 | (reset_end - reset_start) % HZ); | |
387 | ||
388 | ||
389 | /* Integrated ESDI Disk and Controller has only one drive! */ | |
390 | if (adapterID == INTG_ESDI_ID) {/* if not "normal" PS2 ESDI adapter */ | |
391 | ps2esdi_drives = 1; /* then we have only one physical disk! */ intg_esdi = 1; | |
392 | } | |
393 | ||
394 | ||
395 | ||
396 | /* finally this part sets up some global data structures etc. */ | |
397 | ||
398 | ps2esdi_get_device_cfg(); | |
399 | ||
400 | /* some annoyance in the above routine returns TWO drives? | |
401 | Is something else happining in the background? | |
402 | Regaurdless we fix the # of drives again. AJK */ | |
403 | /* Integrated ESDI Disk and Controller has only one drive! */ | |
404 | if (adapterID == INTG_ESDI_ID) /* if not "normal" PS2 ESDI adapter */ | |
405 | ps2esdi_drives = 1; /* Not three or two, ONE DAMNIT! */ | |
406 | ||
407 | current_int_handler = ps2esdi_normal_interrupt_handler; | |
408 | ||
409 | if (request_dma(dma_arb_level, "ed") !=0) { | |
410 | printk(KERN_WARNING "PS2ESDI: Can't request dma-channel %d\n" | |
411 | ,(int) dma_arb_level); | |
412 | error = -EBUSY; | |
413 | goto err_out3; | |
414 | } | |
415 | blk_queue_max_sectors(ps2esdi_queue, 128); | |
416 | ||
417 | error = -ENOMEM; | |
418 | for (i = 0; i < ps2esdi_drives; i++) { | |
419 | struct gendisk *disk = alloc_disk(64); | |
420 | if (!disk) | |
421 | goto err_out4; | |
422 | disk->major = PS2ESDI_MAJOR; | |
423 | disk->first_minor = i<<6; | |
424 | sprintf(disk->disk_name, "ed%c", 'a'+i); | |
425 | sprintf(disk->devfs_name, "ed/target%d", i); | |
426 | disk->fops = &ps2esdi_fops; | |
427 | ps2esdi_gendisk[i] = disk; | |
428 | } | |
429 | ||
430 | for (i = 0; i < ps2esdi_drives; i++) { | |
431 | struct gendisk *disk = ps2esdi_gendisk[i]; | |
432 | set_capacity(disk, ps2esdi_info[i].head * ps2esdi_info[i].sect * | |
433 | ps2esdi_info[i].cyl); | |
434 | disk->queue = ps2esdi_queue; | |
435 | disk->private_data = &ps2esdi_info[i]; | |
436 | add_disk(disk); | |
437 | } | |
438 | return 0; | |
439 | err_out4: | |
440 | while (i--) | |
441 | put_disk(ps2esdi_gendisk[i]); | |
442 | err_out3: | |
443 | release_region(io_base, 4); | |
444 | err_out2: | |
445 | free_irq(PS2ESDI_IRQ, &ps2esdi_gendisk); | |
446 | err_out1: | |
447 | if(ps2esdi_slot) { | |
448 | mca_mark_as_unused(ps2esdi_slot); | |
449 | mca_set_adapter_procfn(ps2esdi_slot, NULL, NULL); | |
450 | } | |
451 | return error; | |
452 | } | |
453 | ||
454 | static void __init ps2esdi_get_device_cfg(void) | |
455 | { | |
456 | u_short cmd_blk[TYPE_0_CMD_BLK_LENGTH]; | |
457 | ||
458 | /*BA */ printk("%s: Drive 0\n", DEVICE_NAME); | |
459 | current_int_handler = ps2esdi_geometry_int_handler; | |
460 | cmd_blk[0] = CMD_GET_DEV_CONFIG | 0x600; | |
461 | cmd_blk[1] = 0; | |
462 | no_int_yet = TRUE; | |
463 | ps2esdi_out_cmd_blk(cmd_blk); | |
464 | if (no_int_yet) | |
465 | sleep_on(&ps2esdi_int); | |
466 | ||
467 | if (ps2esdi_drives > 1) { | |
468 | printk("%s: Drive 1\n", DEVICE_NAME); /*BA */ | |
469 | cmd_blk[0] = CMD_GET_DEV_CONFIG | (1 << 5) | 0x600; | |
470 | cmd_blk[1] = 0; | |
471 | no_int_yet = TRUE; | |
472 | ps2esdi_out_cmd_blk(cmd_blk); | |
473 | if (no_int_yet) | |
474 | sleep_on(&ps2esdi_int); | |
475 | } /* if second physical drive is present */ | |
476 | return; | |
477 | } | |
478 | ||
479 | /* strategy routine that handles most of the IO requests */ | |
480 | static void do_ps2esdi_request(request_queue_t * q) | |
481 | { | |
482 | struct request *req; | |
483 | /* since, this routine is called with interrupts cleared - they | |
484 | must be before it finishes */ | |
485 | ||
486 | req = elv_next_request(q); | |
487 | if (!req) | |
488 | return; | |
489 | ||
490 | #if 0 | |
491 | printk("%s:got request. device : %s command : %d sector : %ld count : %ld, buffer: %p\n", | |
492 | DEVICE_NAME, | |
493 | req->rq_disk->disk_name, | |
494 | req->cmd, req->sector, | |
495 | req->current_nr_sectors, req->buffer); | |
496 | #endif | |
497 | ||
498 | /* check for above 16Mb dmas */ | |
499 | if (isa_virt_to_bus(req->buffer + req->current_nr_sectors * 512) > 16 * MB) { | |
500 | printk("%s: DMA above 16MB not supported\n", DEVICE_NAME); | |
501 | end_request(req, FAIL); | |
502 | return; | |
503 | } | |
504 | ||
505 | if (req->sector+req->current_nr_sectors > get_capacity(req->rq_disk)) { | |
506 | printk("Grrr. error. ps2esdi_drives: %d, %llu %llu\n", | |
507 | ps2esdi_drives, req->sector, | |
508 | (unsigned long long)get_capacity(req->rq_disk)); | |
509 | end_request(req, FAIL); | |
510 | return; | |
511 | } | |
512 | ||
513 | switch (rq_data_dir(req)) { | |
514 | case READ: | |
515 | ps2esdi_readwrite(READ, req); | |
516 | break; | |
517 | case WRITE: | |
518 | ps2esdi_readwrite(WRITE, req); | |
519 | break; | |
520 | default: | |
521 | printk("%s: Unknown command\n", req->rq_disk->disk_name); | |
522 | end_request(req, FAIL); | |
523 | break; | |
524 | } /* handle different commands */ | |
525 | } /* main strategy routine */ | |
526 | ||
527 | /* resets the ESDI adapter */ | |
528 | static void reset_ctrl(void) | |
529 | { | |
530 | ||
531 | u_long expire; | |
532 | u_short status; | |
533 | ||
534 | /* enable interrupts on the controller */ | |
535 | status = inb(ESDI_INTRPT); | |
536 | outb((status & 0xe0) | ATT_EOI, ESDI_ATTN); /* to be sure we don't have | |
537 | any interrupt pending... */ | |
538 | outb_p(CTRL_ENABLE_INTR, ESDI_CONTROL); | |
539 | ||
540 | /* read the ESDI status port - if the controller is not busy, | |
541 | simply do a soft reset (fast) - otherwise we'll have to do a | |
542 | hard (slow) reset. */ | |
543 | if (!(inb_p(ESDI_STATUS) & STATUS_BUSY)) { | |
544 | /*BA */ printk("%s: soft reset...\n", DEVICE_NAME); | |
545 | outb_p(CTRL_SOFT_RESET, ESDI_ATTN); | |
546 | } | |
547 | /* soft reset */ | |
548 | else { | |
549 | /*BA */ | |
550 | printk("%s: hard reset...\n", DEVICE_NAME); | |
551 | outb_p(CTRL_HARD_RESET, ESDI_CONTROL); | |
552 | expire = jiffies + 2*HZ; | |
553 | while (time_before(jiffies, expire)); | |
554 | outb_p(1, ESDI_CONTROL); | |
555 | } /* hard reset */ | |
556 | ||
557 | ||
558 | } /* reset the controller */ | |
559 | ||
560 | /* called by the strategy routine to handle read and write requests */ | |
561 | static void ps2esdi_readwrite(int cmd, struct request *req) | |
562 | { | |
563 | struct ps2esdi_i_struct *p = req->rq_disk->private_data; | |
564 | unsigned block = req->sector; | |
565 | unsigned count = req->current_nr_sectors; | |
566 | int drive = p - ps2esdi_info; | |
567 | u_short track, head, cylinder, sector; | |
568 | u_short cmd_blk[TYPE_1_CMD_BLK_LENGTH]; | |
569 | ||
570 | /* do some relevant arithmatic */ | |
571 | track = block / p->sect; | |
572 | head = track % p->head; | |
573 | cylinder = track / p->head; | |
574 | sector = block % p->sect; | |
575 | ||
576 | #if 0 | |
577 | printk("%s: cyl=%d head=%d sect=%d\n", DEVICE_NAME, cylinder, head, sector); | |
578 | #endif | |
579 | /* call the routine that actually fills out a command block */ | |
580 | ps2esdi_fill_cmd_block | |
581 | (cmd_blk, | |
582 | (cmd == READ) ? CMD_READ : CMD_WRITE, | |
583 | cylinder, head, sector, count, drive); | |
584 | ||
585 | /* send the command block to the controller */ | |
586 | current_req = req; | |
587 | spin_unlock_irq(&ps2esdi_lock); | |
588 | if (ps2esdi_out_cmd_blk(cmd_blk)) { | |
589 | spin_lock_irq(&ps2esdi_lock); | |
590 | printk("%s: Controller failed\n", DEVICE_NAME); | |
591 | if ((++req->errors) >= MAX_RETRIES) | |
592 | end_request(req, FAIL); | |
593 | } | |
594 | /* check for failure to put out the command block */ | |
595 | else { | |
596 | spin_lock_irq(&ps2esdi_lock); | |
597 | #if 0 | |
598 | printk("%s: waiting for xfer\n", DEVICE_NAME); | |
599 | #endif | |
600 | /* turn disk lights on */ | |
601 | LITE_ON; | |
602 | } | |
603 | ||
604 | } /* ps2esdi_readwrite */ | |
605 | ||
606 | /* fill out the command block */ | |
607 | static void ps2esdi_fill_cmd_block(u_short * cmd_blk, u_short cmd, | |
608 | u_short cyl, u_short head, u_short sector, u_short length, u_char drive) | |
609 | { | |
610 | ||
611 | cmd_blk[0] = (drive << 5) | cmd; | |
612 | cmd_blk[1] = length; | |
613 | cmd_blk[2] = ((cyl & 0x1f) << 11) | (head << 5) | sector; | |
614 | cmd_blk[3] = (cyl & 0x3E0) >> 5; | |
615 | ||
616 | } /* fill out the command block */ | |
617 | ||
618 | /* write a command block to the controller */ | |
619 | static int ps2esdi_out_cmd_blk(u_short * cmd_blk) | |
620 | { | |
621 | ||
622 | int i; | |
623 | unsigned long jif; | |
624 | u_char status; | |
625 | ||
626 | /* enable interrupts */ | |
627 | outb(CTRL_ENABLE_INTR, ESDI_CONTROL); | |
628 | ||
629 | /* do not write to the controller, if it is busy */ | |
630 | for (jif = jiffies + ESDI_STAT_TIMEOUT; | |
631 | time_after(jif, jiffies) && | |
632 | (inb(ESDI_STATUS) & STATUS_BUSY); ) | |
633 | ; | |
634 | ||
635 | #if 0 | |
636 | printk("%s: i(1)=%ld\n", DEVICE_NAME, jif); | |
637 | #endif | |
638 | ||
639 | /* if device is still busy - then just time out */ | |
640 | if (inb(ESDI_STATUS) & STATUS_BUSY) { | |
641 | printk("%s: ps2esdi_out_cmd timed out (1)\n", DEVICE_NAME); | |
642 | return ERROR; | |
643 | } /* timeout ??? */ | |
644 | /* Set up the attention register in the controller */ | |
645 | outb(((*cmd_blk) & 0xE0) | 1, ESDI_ATTN); | |
646 | ||
647 | #if 0 | |
648 | printk("%s: sending %d words to controller\n", DEVICE_NAME, (((*cmd_blk) >> 14) + 1) << 1); | |
649 | #endif | |
650 | ||
651 | /* one by one send each word out */ | |
652 | for (i = (((*cmd_blk) >> 14) + 1) << 1; i; i--) { | |
653 | status = inb(ESDI_STATUS); | |
654 | for (jif = jiffies + ESDI_STAT_TIMEOUT; | |
655 | time_after(jif, jiffies) && (status & STATUS_BUSY) && | |
656 | (status & STATUS_CMD_INF); status = inb(ESDI_STATUS)); | |
657 | if ((status & (STATUS_BUSY | STATUS_CMD_INF)) == STATUS_BUSY) { | |
658 | #if 0 | |
659 | printk("%s: sending %04X\n", DEVICE_NAME, *cmd_blk); | |
660 | #endif | |
661 | outw(*cmd_blk++, ESDI_CMD_INT); | |
662 | } else { | |
663 | printk("%s: ps2esdi_out_cmd timed out while sending command (status=%02X)\n", | |
664 | DEVICE_NAME, status); | |
665 | return ERROR; | |
666 | } | |
667 | } /* send all words out */ | |
668 | return OK; | |
669 | } /* send out the commands */ | |
670 | ||
671 | ||
672 | /* prepare for dma - do all the necessary setup */ | |
673 | static void ps2esdi_prep_dma(char *buffer, u_short length, u_char dma_xmode) | |
674 | { | |
675 | unsigned long flags = claim_dma_lock(); | |
676 | ||
677 | mca_disable_dma(dma_arb_level); | |
678 | ||
679 | mca_set_dma_addr(dma_arb_level, isa_virt_to_bus(buffer)); | |
680 | ||
681 | mca_set_dma_count(dma_arb_level, length * 512 / 2); | |
682 | ||
683 | mca_set_dma_mode(dma_arb_level, dma_xmode); | |
684 | ||
685 | mca_enable_dma(dma_arb_level); | |
686 | ||
687 | release_dma_lock(flags); | |
688 | ||
689 | } /* prepare for dma */ | |
690 | ||
691 | ||
692 | ||
693 | static irqreturn_t ps2esdi_interrupt_handler(int irq, void *dev_id, | |
694 | struct pt_regs *regs) | |
695 | { | |
696 | u_int int_ret_code; | |
697 | ||
698 | if (inb(ESDI_STATUS) & STATUS_INTR) { | |
699 | int_ret_code = inb(ESDI_INTRPT); | |
700 | if (current_int_handler) { | |
701 | /* Disable adapter interrupts till processing is finished */ | |
702 | outb(CTRL_DISABLE_INTR, ESDI_CONTROL); | |
703 | current_int_handler(int_ret_code); | |
704 | } else | |
705 | printk("%s: help ! No interrupt handler.\n", DEVICE_NAME); | |
706 | } else { | |
707 | return IRQ_NONE; | |
708 | } | |
709 | return IRQ_HANDLED; | |
710 | } | |
711 | ||
712 | static void ps2esdi_initial_reset_int_handler(u_int int_ret_code) | |
713 | { | |
714 | ||
715 | switch (int_ret_code & 0xf) { | |
716 | case INT_RESET: | |
717 | /*BA */ | |
718 | printk("%s: initial reset completed.\n", DEVICE_NAME); | |
719 | outb((int_ret_code & 0xe0) | ATT_EOI, ESDI_ATTN); | |
720 | wake_up(&ps2esdi_int); | |
721 | break; | |
722 | case INT_ATTN_ERROR: | |
723 | printk("%s: Attention error. interrupt status : %02X\n", DEVICE_NAME, | |
724 | int_ret_code); | |
725 | printk("%s: status: %02x\n", DEVICE_NAME, inb(ESDI_STATUS)); | |
726 | break; | |
727 | default: | |
728 | printk("%s: initial reset handler received interrupt: %02X\n", | |
729 | DEVICE_NAME, int_ret_code); | |
730 | outb((int_ret_code & 0xe0) | ATT_EOI, ESDI_ATTN); | |
731 | break; | |
732 | } | |
733 | outb(CTRL_ENABLE_INTR, ESDI_CONTROL); | |
734 | } | |
735 | ||
736 | ||
737 | static void ps2esdi_geometry_int_handler(u_int int_ret_code) | |
738 | { | |
739 | u_int status, drive_num; | |
740 | unsigned long rba; | |
741 | int i; | |
742 | ||
743 | drive_num = int_ret_code >> 5; | |
744 | switch (int_ret_code & 0xf) { | |
745 | case INT_CMD_COMPLETE: | |
746 | for (i = ESDI_TIMEOUT; i && !(inb(ESDI_STATUS) & STATUS_STAT_AVAIL); i--); | |
747 | if (!(inb(ESDI_STATUS) & STATUS_STAT_AVAIL)) { | |
748 | printk("%s: timeout reading status word\n", DEVICE_NAME); | |
749 | outb((int_ret_code & 0xe0) | ATT_EOI, ESDI_ATTN); | |
750 | break; | |
751 | } | |
752 | status = inw(ESDI_STT_INT); | |
753 | if ((status & 0x1F) == CMD_GET_DEV_CONFIG) { | |
754 | #define REPLY_WORDS 5 /* we already read word 0 */ | |
755 | u_short reply[REPLY_WORDS]; | |
756 | ||
757 | if (ps2esdi_read_status_words((status >> 8) - 1, REPLY_WORDS, reply)) { | |
758 | /*BA */ | |
759 | printk("%s: Device Configuration Status for drive %u\n", | |
760 | DEVICE_NAME, drive_num); | |
761 | ||
762 | printk("%s: Spares/cyls: %u", DEVICE_NAME, reply[0] >> 8); | |
763 | ||
764 | printk | |
765 | ("Config bits: %s%s%s%s%s\n", | |
766 | (reply[0] & CONFIG_IS) ? "Invalid Secondary, " : "", | |
767 | ((reply[0] & CONFIG_ZD) && !(reply[0] & CONFIG_IS)) | |
768 | ? "Zero Defect, " : "Defects Present, ", | |
769 | (reply[0] & CONFIG_SF) ? "Skewed Format, " : "", | |
770 | (reply[0] & CONFIG_FR) ? "Removable, " : "Non-Removable, ", | |
771 | (reply[0] & CONFIG_RT) ? "No Retries" : "Retries"); | |
772 | ||
773 | rba = reply[1] | ((unsigned long) reply[2] << 16); | |
774 | printk("%s: Number of RBA's: %lu\n", DEVICE_NAME, rba); | |
775 | ||
776 | printk("%s: Physical number of cylinders: %u, Sectors/Track: %u, Heads: %u\n", | |
777 | DEVICE_NAME, reply[3], reply[4] >> 8, reply[4] & 0xff); | |
778 | ||
779 | if (!ps2esdi_info[drive_num].head) { | |
780 | ps2esdi_info[drive_num].head = 64; | |
781 | ps2esdi_info[drive_num].sect = 32; | |
782 | ps2esdi_info[drive_num].cyl = rba / (64 * 32); | |
783 | ps2esdi_info[drive_num].wpcom = 0; | |
784 | ps2esdi_info[drive_num].lzone = ps2esdi_info[drive_num].cyl; | |
785 | ps2esdi_info[drive_num].ctl = 8; | |
786 | if (tp720esdi) { /* store the retrieved parameters */ | |
787 | ps2esdi_info[0].head = reply[4] & 0Xff; | |
788 | ps2esdi_info[0].sect = reply[4] >> 8; | |
789 | ps2esdi_info[0].cyl = reply[3]; | |
790 | ps2esdi_info[0].wpcom = 0; | |
791 | ps2esdi_info[0].lzone = reply[3]; | |
792 | } else { | |
793 | if (!intg_esdi) | |
794 | ps2esdi_drives++; | |
795 | } | |
796 | } | |
797 | #ifdef OBSOLETE | |
798 | if (!ps2esdi_info[drive_num].head) { | |
799 | ps2esdi_info[drive_num].head = reply[4] & 0Xff; | |
800 | ps2esdi_info[drive_num].sect = reply[4] >> 8; | |
801 | ps2esdi_info[drive_num].cyl = reply[3]; | |
802 | ps2esdi_info[drive_num].wpcom = 0; | |
803 | ps2esdi_info[drive_num].lzone = reply[3]; | |
804 | if (tp720esdi) { /* store the retrieved parameters */ | |
805 | ps2esdi_info[0].head = reply[4] & 0Xff; | |
806 | ps2esdi_info[0].sect = reply[4] >> 8; | |
807 | ps2esdi_info[0].cyl = reply[3]; | |
808 | ps2esdi_info[0].wpcom = 0; | |
809 | ps2esdi_info[0].lzone = reply[3]; | |
810 | } else { | |
811 | ps2esdi_drives++; | |
812 | } | |
813 | } | |
814 | #endif | |
815 | ||
816 | } else | |
817 | printk("%s: failed while getting device config\n", DEVICE_NAME); | |
818 | #undef REPLY_WORDS | |
819 | } else | |
820 | printk("%s: command %02X unknown by geometry handler\n", | |
821 | DEVICE_NAME, status & 0x1f); | |
822 | ||
823 | outb((int_ret_code & 0xe0) | ATT_EOI, ESDI_ATTN); | |
824 | break; | |
825 | ||
826 | case INT_ATTN_ERROR: | |
827 | printk("%s: Attention error. interrupt status : %02X\n", DEVICE_NAME, | |
828 | int_ret_code); | |
829 | printk("%s: Device not available\n", DEVICE_NAME); | |
830 | break; | |
831 | case INT_CMD_ECC: | |
832 | case INT_CMD_RETRY: | |
833 | case INT_CMD_ECC_RETRY: | |
834 | case INT_CMD_WARNING: | |
835 | case INT_CMD_ABORT: | |
836 | case INT_CMD_FAILED: | |
837 | case INT_DMA_ERR: | |
838 | case INT_CMD_BLK_ERR: | |
839 | /*BA */ printk("%s: Whaa. Error occurred...\n", DEVICE_NAME); | |
840 | dump_cmd_complete_status(int_ret_code); | |
841 | outb((int_ret_code & 0xe0) | ATT_EOI, ESDI_ATTN); | |
842 | break; | |
843 | default: | |
844 | printk("%s: Unknown interrupt reason: %02X\n", | |
845 | DEVICE_NAME, int_ret_code & 0xf); | |
846 | outb((int_ret_code & 0xe0) | ATT_EOI, ESDI_ATTN); | |
847 | break; | |
848 | } | |
849 | ||
850 | wake_up(&ps2esdi_int); | |
851 | no_int_yet = FALSE; | |
852 | outb(CTRL_ENABLE_INTR, ESDI_CONTROL); | |
853 | ||
854 | } | |
855 | ||
856 | static void ps2esdi_normal_interrupt_handler(u_int int_ret_code) | |
857 | { | |
858 | unsigned long flags; | |
859 | u_int status; | |
860 | u_int ending; | |
861 | int i; | |
862 | ||
863 | switch (int_ret_code & 0x0f) { | |
864 | case INT_TRANSFER_REQ: | |
865 | ps2esdi_prep_dma(current_req->buffer, | |
866 | current_req->current_nr_sectors, | |
867 | (rq_data_dir(current_req) == READ) | |
868 | ? MCA_DMA_MODE_16 | MCA_DMA_MODE_WRITE | MCA_DMA_MODE_XFER | |
869 | : MCA_DMA_MODE_16 | MCA_DMA_MODE_READ); | |
870 | outb(CTRL_ENABLE_DMA | CTRL_ENABLE_INTR, ESDI_CONTROL); | |
871 | ending = -1; | |
872 | break; | |
873 | ||
874 | case INT_ATTN_ERROR: | |
875 | printk("%s: Attention error. interrupt status : %02X\n", DEVICE_NAME, | |
876 | int_ret_code); | |
877 | outb(CTRL_ENABLE_INTR, ESDI_CONTROL); | |
878 | ending = FAIL; | |
879 | break; | |
880 | ||
881 | case INT_CMD_COMPLETE: | |
882 | for (i = ESDI_TIMEOUT; i && !(inb(ESDI_STATUS) & STATUS_STAT_AVAIL); i--); | |
883 | if (!(inb(ESDI_STATUS) & STATUS_STAT_AVAIL)) { | |
884 | printk("%s: timeout reading status word\n", DEVICE_NAME); | |
885 | outb((int_ret_code & 0xe0) | ATT_EOI, ESDI_ATTN); | |
886 | outb(CTRL_ENABLE_INTR, ESDI_CONTROL); | |
887 | if ((++current_req->errors) >= MAX_RETRIES) | |
888 | ending = FAIL; | |
889 | else | |
890 | ending = -1; | |
891 | break; | |
892 | } | |
893 | status = inw(ESDI_STT_INT); | |
894 | switch (status & 0x1F) { | |
895 | case (CMD_READ & 0xff): | |
896 | case (CMD_WRITE & 0xff): | |
897 | LITE_OFF; | |
898 | outb((int_ret_code & 0xe0) | ATT_EOI, ESDI_ATTN); | |
899 | outb(CTRL_ENABLE_INTR, ESDI_CONTROL); | |
900 | ending = SUCCES; | |
901 | break; | |
902 | default: | |
903 | printk("%s: interrupt for unknown command %02X\n", | |
904 | DEVICE_NAME, status & 0x1f); | |
905 | outb((int_ret_code & 0xe0) | ATT_EOI, ESDI_ATTN); | |
906 | outb(CTRL_ENABLE_INTR, ESDI_CONTROL); | |
907 | ending = -1; | |
908 | break; | |
909 | } | |
910 | break; | |
911 | case INT_CMD_ECC: | |
912 | case INT_CMD_RETRY: | |
913 | case INT_CMD_ECC_RETRY: | |
914 | LITE_OFF; | |
915 | dump_cmd_complete_status(int_ret_code); | |
916 | outb((int_ret_code & 0xe0) | ATT_EOI, ESDI_ATTN); | |
917 | outb(CTRL_ENABLE_INTR, ESDI_CONTROL); | |
918 | ending = SUCCES; | |
919 | break; | |
920 | case INT_CMD_WARNING: | |
921 | case INT_CMD_ABORT: | |
922 | case INT_CMD_FAILED: | |
923 | case INT_DMA_ERR: | |
924 | LITE_OFF; | |
925 | dump_cmd_complete_status(int_ret_code); | |
926 | outb((int_ret_code & 0xe0) | ATT_EOI, ESDI_ATTN); | |
927 | outb(CTRL_ENABLE_INTR, ESDI_CONTROL); | |
928 | if ((++current_req->errors) >= MAX_RETRIES) | |
929 | ending = FAIL; | |
930 | else | |
931 | ending = -1; | |
932 | break; | |
933 | ||
934 | case INT_CMD_BLK_ERR: | |
935 | dump_cmd_complete_status(int_ret_code); | |
936 | outb((int_ret_code & 0xe0) | ATT_EOI, ESDI_ATTN); | |
937 | outb(CTRL_ENABLE_INTR, ESDI_CONTROL); | |
938 | ending = FAIL; | |
939 | break; | |
940 | ||
941 | case INT_CMD_FORMAT: | |
942 | printk("%s: huh ? Who issued this format command ?\n" | |
943 | ,DEVICE_NAME); | |
944 | outb((int_ret_code & 0xe0) | ATT_EOI, ESDI_ATTN); | |
945 | outb(CTRL_ENABLE_INTR, ESDI_CONTROL); | |
946 | ending = -1; | |
947 | break; | |
948 | ||
949 | case INT_RESET: | |
950 | /* BA printk("%s: reset completed.\n", DEVICE_NAME) */ ; | |
951 | outb((int_ret_code & 0xe0) | ATT_EOI, ESDI_ATTN); | |
952 | outb(CTRL_ENABLE_INTR, ESDI_CONTROL); | |
953 | ending = -1; | |
954 | break; | |
955 | ||
956 | default: | |
957 | printk("%s: Unknown interrupt reason: %02X\n", | |
958 | DEVICE_NAME, int_ret_code & 0xf); | |
959 | outb((int_ret_code & 0xe0) | ATT_EOI, ESDI_ATTN); | |
960 | outb(CTRL_ENABLE_INTR, ESDI_CONTROL); | |
961 | ending = -1; | |
962 | break; | |
963 | } | |
964 | if(ending != -1) { | |
965 | spin_lock_irqsave(&ps2esdi_lock, flags); | |
966 | end_request(current_req, ending); | |
967 | current_req = NULL; | |
968 | do_ps2esdi_request(ps2esdi_queue); | |
969 | spin_unlock_irqrestore(&ps2esdi_lock, flags); | |
970 | } | |
971 | } /* handle interrupts */ | |
972 | ||
973 | ||
974 | ||
975 | static int ps2esdi_read_status_words(int num_words, | |
976 | int max_words, | |
977 | u_short * buffer) | |
978 | { | |
979 | int i; | |
980 | ||
981 | for (; max_words && num_words; max_words--, num_words--, buffer++) { | |
982 | for (i = ESDI_TIMEOUT; i && !(inb(ESDI_STATUS) & STATUS_STAT_AVAIL); i--); | |
983 | if (!(inb(ESDI_STATUS) & STATUS_STAT_AVAIL)) { | |
984 | printk("%s: timeout reading status word\n", DEVICE_NAME); | |
985 | return FAIL; | |
986 | } | |
987 | *buffer = inw(ESDI_STT_INT); | |
988 | } | |
989 | return SUCCES; | |
990 | } | |
991 | ||
992 | ||
993 | ||
994 | ||
995 | static void dump_cmd_complete_status(u_int int_ret_code) | |
996 | { | |
997 | #define WAIT_FOR_STATUS \ | |
998 | for(i=ESDI_TIMEOUT;i && !(inb(ESDI_STATUS) & STATUS_STAT_AVAIL);i--); \ | |
999 | if(!(inb(ESDI_STATUS) & STATUS_STAT_AVAIL)) { \ | |
1000 | printk("%s: timeout reading status word\n",DEVICE_NAME); \ | |
1001 | return; \ | |
1002 | } | |
1003 | ||
1004 | int i, word_count; | |
1005 | u_short stat_word; | |
1006 | u_long rba; | |
1007 | ||
1008 | printk("%s: Device: %u, interrupt ID: %02X\n", | |
1009 | DEVICE_NAME, int_ret_code >> 5, | |
1010 | int_ret_code & 0xf); | |
1011 | ||
1012 | WAIT_FOR_STATUS; | |
1013 | stat_word = inw(ESDI_STT_INT); | |
1014 | word_count = (stat_word >> 8) - 1; | |
1015 | printk("%s: %u status words, command: %02X\n", DEVICE_NAME, word_count, | |
1016 | stat_word & 0xff); | |
1017 | ||
1018 | if (word_count--) { | |
1019 | WAIT_FOR_STATUS; | |
1020 | stat_word = inw(ESDI_STT_INT); | |
1021 | printk("%s: command status code: %02X, command error code: %02X\n", | |
1022 | DEVICE_NAME, stat_word >> 8, stat_word & 0xff); | |
1023 | } | |
1024 | if (word_count--) { | |
1025 | WAIT_FOR_STATUS; | |
1026 | stat_word = inw(ESDI_STT_INT); | |
1027 | printk("%s: device error code: %s%s%s%s%s,%02X\n", DEVICE_NAME, | |
1028 | (stat_word & 0x1000) ? "Ready, " : "Not Ready, ", | |
1029 | (stat_word & 0x0800) ? "Selected, " : "Not Selected, ", | |
1030 | (stat_word & 0x0400) ? "Write Fault, " : "", | |
1031 | (stat_word & 0x0200) ? "Track 0, " : "", | |
1032 | (stat_word & 0x0100) ? "Seek or command complete, " : "", | |
1033 | stat_word >> 8); | |
1034 | } | |
1035 | if (word_count--) { | |
1036 | WAIT_FOR_STATUS; | |
1037 | stat_word = inw(ESDI_STT_INT); | |
1038 | printk("%s: Blocks to do: %u", DEVICE_NAME, stat_word); | |
1039 | } | |
1040 | if (word_count -= 2) { | |
1041 | WAIT_FOR_STATUS; | |
1042 | rba = inw(ESDI_STT_INT); | |
1043 | WAIT_FOR_STATUS; | |
1044 | rba |= inw(ESDI_STT_INT) << 16; | |
1045 | printk(", Last Cyl: %u Head: %u Sector: %u\n", | |
1046 | (u_short) ((rba & 0x1ff80000) >> 11), | |
1047 | (u_short) ((rba & 0x7E0) >> 5), (u_short) (rba & 0x1f)); | |
1048 | } else | |
1049 | printk("\n"); | |
1050 | ||
1051 | if (word_count--) { | |
1052 | WAIT_FOR_STATUS; | |
1053 | stat_word = inw(ESDI_STT_INT); | |
1054 | printk("%s: Blocks required ECC: %u", DEVICE_NAME, stat_word); | |
1055 | } | |
1056 | printk("\n"); | |
1057 | ||
1058 | #undef WAIT_FOR_STATUS | |
1059 | ||
1060 | } | |
1061 | ||
1062 | static int ps2esdi_ioctl(struct inode *inode, | |
1063 | struct file *file, u_int cmd, u_long arg) | |
1064 | { | |
1065 | struct ps2esdi_i_struct *p = inode->i_bdev->bd_disk->private_data; | |
1066 | struct ps2esdi_geometry geom; | |
1067 | ||
1068 | if (cmd != HDIO_GETGEO) | |
1069 | return -EINVAL; | |
1070 | memset(&geom, 0, sizeof(geom)); | |
1071 | geom.heads = p->head; | |
1072 | geom.sectors = p->sect; | |
1073 | geom.cylinders = p->cyl; | |
1074 | geom.start = get_start_sect(inode->i_bdev); | |
1075 | if (copy_to_user((void __user *)arg, &geom, sizeof(geom))) | |
1076 | return -EFAULT; | |
1077 | return 0; | |
1078 | } | |
1079 | ||
1080 | static void ps2esdi_reset_timer(unsigned long unused) | |
1081 | { | |
1082 | ||
1083 | int status; | |
1084 | ||
1085 | status = inb(ESDI_INTRPT); | |
1086 | if ((status & 0xf) == INT_RESET) { | |
1087 | outb((status & 0xe0) | ATT_EOI, ESDI_ATTN); | |
1088 | outb(CTRL_ENABLE_INTR, ESDI_CONTROL); | |
1089 | reset_status = 1; | |
1090 | } | |
1091 | wake_up(&ps2esdi_int); | |
1092 | } |