Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * This file contains the driver for an XT hard disk controller | |
3 | * (at least the DTC 5150X) for Linux. | |
4 | * | |
5 | * Author: Pat Mackinlay, pat@it.com.au | |
6 | * Date: 29/09/92 | |
7 | * | |
8 | * Revised: 01/01/93, ... | |
9 | * | |
10 | * Ref: DTC 5150X Controller Specification (thanks to Kevin Fowler, | |
11 | * kevinf@agora.rain.com) | |
12 | * Also thanks to: Salvador Abreu, Dave Thaler, Risto Kankkunen and | |
13 | * Wim Van Dorst. | |
14 | * | |
15 | * Revised: 04/04/94 by Risto Kankkunen | |
16 | * Moved the detection code from xd_init() to xd_geninit() as it needed | |
17 | * interrupts enabled and Linus didn't want to enable them in that first | |
18 | * phase. xd_geninit() is the place to do these kinds of things anyway, | |
19 | * he says. | |
20 | * | |
21 | * Modularized: 04/10/96 by Todd Fries, tfries@umr.edu | |
22 | * | |
23 | * Revised: 13/12/97 by Andrzej Krzysztofowicz, ankry@mif.pg.gda.pl | |
24 | * Fixed some problems with disk initialization and module initiation. | |
25 | * Added support for manual geometry setting (except Seagate controllers) | |
26 | * in form: | |
27 | * xd_geo=<cyl_xda>,<head_xda>,<sec_xda>[,<cyl_xdb>,<head_xdb>,<sec_xdb>] | |
28 | * Recovered DMA access. Abridged messages. Added support for DTC5051CX, | |
29 | * WD1002-27X & XEBEC controllers. Driver uses now some jumper settings. | |
30 | * Extended ioctl() support. | |
31 | * | |
32 | * Bugfix: 15/02/01, Paul G. - inform queue layer of tiny xd_maxsect. | |
33 | * | |
34 | */ | |
35 | ||
36 | #include <linux/module.h> | |
37 | #include <linux/errno.h> | |
38 | #include <linux/interrupt.h> | |
39 | #include <linux/mm.h> | |
40 | #include <linux/fs.h> | |
41 | #include <linux/kernel.h> | |
42 | #include <linux/timer.h> | |
43 | #include <linux/genhd.h> | |
44 | #include <linux/hdreg.h> | |
45 | #include <linux/ioport.h> | |
46 | #include <linux/init.h> | |
47 | #include <linux/wait.h> | |
48 | #include <linux/blkdev.h> | |
49 | #include <linux/blkpg.h> | |
f6a2f340 | 50 | #include <linux/delay.h> |
53d5ed62 | 51 | #include <linux/io.h> |
1da177e4 LT |
52 | |
53 | #include <asm/system.h> | |
1da177e4 LT |
54 | #include <asm/uaccess.h> |
55 | #include <asm/dma.h> | |
56 | ||
57 | #include "xd.h" | |
58 | ||
59 | static void __init do_xd_setup (int *integers); | |
60 | #ifdef MODULE | |
61 | static int xd[5] = { -1,-1,-1,-1, }; | |
62 | #endif | |
63 | ||
64 | #define XD_DONT_USE_DMA 0 /* Initial value. may be overriden using | |
65 | "nodma" module option */ | |
f6a2f340 | 66 | #define XD_INIT_DISK_DELAY (30) /* 30 ms delay during disk initialization */ |
1da177e4 LT |
67 | |
68 | /* Above may need to be increased if a problem with the 2nd drive detection | |
69 | (ST11M controller) or resetting a controller (WD) appears */ | |
70 | ||
71 | static XD_INFO xd_info[XD_MAXDRIVES]; | |
72 | ||
73 | /* If you try this driver and find that your card is not detected by the driver at bootup, you need to add your BIOS | |
74 | signature and details to the following list of signatures. A BIOS signature is a string embedded into the first | |
75 | few bytes of your controller's on-board ROM BIOS. To find out what yours is, use something like MS-DOS's DEBUG | |
76 | command. Run DEBUG, and then you can examine your BIOS signature with: | |
77 | ||
78 | d xxxx:0000 | |
79 | ||
80 | where xxxx is the segment of your controller (like C800 or D000 or something). On the ASCII dump at the right, you should | |
81 | be able to see a string mentioning the manufacturer's copyright etc. Add this string into the table below. The parameters | |
82 | in the table are, in order: | |
83 | ||
84 | offset ; this is the offset (in bytes) from the start of your ROM where the signature starts | |
85 | signature ; this is the actual text of the signature | |
86 | xd_?_init_controller ; this is the controller init routine used by your controller | |
87 | xd_?_init_drive ; this is the drive init routine used by your controller | |
88 | ||
89 | The controllers directly supported at the moment are: DTC 5150x, WD 1004A27X, ST11M/R and override. If your controller is | |
90 | made by the same manufacturer as one of these, try using the same init routines as they do. If that doesn't work, your | |
91 | best bet is to use the "override" routines. These routines use a "portable" method of getting the disk's geometry, and | |
92 | may work with your card. If none of these seem to work, try sending me some email and I'll see what I can do <grin>. | |
93 | ||
94 | NOTE: You can now specify your XT controller's parameters from the command line in the form xd=TYPE,IRQ,IO,DMA. The driver | |
95 | should be able to detect your drive's geometry from this info. (eg: xd=0,5,0x320,3 is the "standard"). */ | |
96 | ||
97 | #include <asm/page.h> | |
98 | #define xd_dma_mem_alloc(size) __get_dma_pages(GFP_KERNEL,get_order(size)) | |
99 | #define xd_dma_mem_free(addr, size) free_pages(addr, get_order(size)) | |
100 | static char *xd_dma_buffer; | |
101 | ||
102 | static XD_SIGNATURE xd_sigs[] __initdata = { | |
103 | { 0x0000,"Override geometry handler",NULL,xd_override_init_drive,"n unknown" }, /* Pat Mackinlay, pat@it.com.au */ | |
104 | { 0x0008,"[BXD06 (C) DTC 17-MAY-1985]",xd_dtc_init_controller,xd_dtc5150cx_init_drive," DTC 5150CX" }, /* Andrzej Krzysztofowicz, ankry@mif.pg.gda.pl */ | |
105 | { 0x000B,"CRD18A Not an IBM rom. (C) Copyright Data Technology Corp. 05/31/88",xd_dtc_init_controller,xd_dtc_init_drive," DTC 5150X" }, /* Todd Fries, tfries@umr.edu */ | |
106 | { 0x000B,"CXD23A Not an IBM ROM (C)Copyright Data Technology Corp 12/03/88",xd_dtc_init_controller,xd_dtc_init_drive," DTC 5150X" }, /* Pat Mackinlay, pat@it.com.au */ | |
107 | { 0x0008,"07/15/86(C) Copyright 1986 Western Digital Corp.",xd_wd_init_controller,xd_wd_init_drive," Western Dig. 1002-27X" }, /* Andrzej Krzysztofowicz, ankry@mif.pg.gda.pl */ | |
108 | { 0x0008,"06/24/88(C) Copyright 1988 Western Digital Corp.",xd_wd_init_controller,xd_wd_init_drive," Western Dig. WDXT-GEN2" }, /* Dan Newcombe, newcombe@aa.csc.peachnet.edu */ | |
109 | { 0x0015,"SEAGATE ST11 BIOS REVISION",xd_seagate_init_controller,xd_seagate_init_drive," Seagate ST11M/R" }, /* Salvador Abreu, spa@fct.unl.pt */ | |
110 | { 0x0010,"ST11R BIOS",xd_seagate_init_controller,xd_seagate_init_drive," Seagate ST11M/R" }, /* Risto Kankkunen, risto.kankkunen@cs.helsinki.fi */ | |
111 | { 0x0010,"ST11 BIOS v1.7",xd_seagate_init_controller,xd_seagate_init_drive," Seagate ST11R" }, /* Alan Hourihane, alanh@fairlite.demon.co.uk */ | |
112 | { 0x1000,"(c)Copyright 1987 SMS",xd_omti_init_controller,xd_omti_init_drive,"n OMTI 5520" }, /* Dirk Melchers, dirk@merlin.nbg.sub.org */ | |
113 | { 0x0006,"COPYRIGHT XEBEC (C) 1984",xd_xebec_init_controller,xd_xebec_init_drive," XEBEC" }, /* Andrzej Krzysztofowicz, ankry@mif.pg.gda.pl */ | |
114 | { 0x0008,"(C) Copyright 1984 Western Digital Corp", xd_wd_init_controller, xd_wd_init_drive," Western Dig. 1002s-wx2" }, | |
115 | { 0x0008,"(C) Copyright 1986 Western Digital Corporation", xd_wd_init_controller, xd_wd_init_drive," 1986 Western Digital" }, /* jfree@sovereign.org */ | |
116 | }; | |
117 | ||
118 | static unsigned int xd_bases[] __initdata = | |
119 | { | |
120 | 0xC8000, 0xCA000, 0xCC000, | |
121 | 0xCE000, 0xD0000, 0xD2000, | |
122 | 0xD4000, 0xD6000, 0xD8000, | |
123 | 0xDA000, 0xDC000, 0xDE000, | |
124 | 0xE0000 | |
125 | }; | |
126 | ||
127 | static DEFINE_SPINLOCK(xd_lock); | |
128 | ||
129 | static struct gendisk *xd_gendisk[2]; | |
130 | ||
a885c8c4 CH |
131 | static int xd_getgeo(struct block_device *bdev, struct hd_geometry *geo); |
132 | ||
83d5cde4 | 133 | static const struct block_device_operations xd_fops = { |
1da177e4 | 134 | .owner = THIS_MODULE, |
961846ca | 135 | .locked_ioctl = xd_ioctl, |
a885c8c4 | 136 | .getgeo = xd_getgeo, |
1da177e4 LT |
137 | }; |
138 | static DECLARE_WAIT_QUEUE_HEAD(xd_wait_int); | |
139 | static u_char xd_drives, xd_irq = 5, xd_dma = 3, xd_maxsectors; | |
140 | static u_char xd_override __initdata = 0, xd_type __initdata = 0; | |
141 | static u_short xd_iobase = 0x320; | |
142 | static int xd_geo[XD_MAXDRIVES*3] __initdata = { 0, }; | |
143 | ||
144 | static volatile int xdc_busy; | |
145 | static struct timer_list xd_watchdog_int; | |
146 | ||
147 | static volatile u_char xd_error; | |
148 | static int nodma = XD_DONT_USE_DMA; | |
149 | ||
150 | static struct request_queue *xd_queue; | |
151 | ||
152 | /* xd_init: register the block device number and set up pointer tables */ | |
153 | static int __init xd_init(void) | |
154 | { | |
155 | u_char i,controller; | |
156 | unsigned int address; | |
157 | int err; | |
158 | ||
159 | #ifdef MODULE | |
160 | { | |
161 | u_char count = 0; | |
162 | for (i = 4; i > 0; i--) | |
163 | if (((xd[i] = xd[i-1]) >= 0) && !count) | |
164 | count = i; | |
165 | if ((xd[0] = count)) | |
166 | do_xd_setup(xd); | |
167 | } | |
168 | #endif | |
169 | ||
170 | init_timer (&xd_watchdog_int); xd_watchdog_int.function = xd_watchdog; | |
171 | ||
1da177e4 LT |
172 | err = -EBUSY; |
173 | if (register_blkdev(XT_DISK_MAJOR, "xd")) | |
174 | goto out1; | |
175 | ||
176 | err = -ENOMEM; | |
177 | xd_queue = blk_init_queue(do_xd_request, &xd_lock); | |
178 | if (!xd_queue) | |
179 | goto out1a; | |
180 | ||
181 | if (xd_detect(&controller,&address)) { | |
182 | ||
183 | printk("Detected a%s controller (type %d) at address %06x\n", | |
184 | xd_sigs[controller].name,controller,address); | |
185 | if (!request_region(xd_iobase,4,"xd")) { | |
186 | printk("xd: Ports at 0x%x are not available\n", | |
187 | xd_iobase); | |
188 | goto out2; | |
189 | } | |
190 | if (controller) | |
191 | xd_sigs[controller].init_controller(address); | |
192 | xd_drives = xd_initdrives(xd_sigs[controller].init_drive); | |
193 | ||
194 | printk("Detected %d hard drive%s (using IRQ%d & DMA%d)\n", | |
195 | xd_drives,xd_drives == 1 ? "" : "s",xd_irq,xd_dma); | |
196 | } | |
197 | ||
a3b8d92d MG |
198 | /* |
199 | * With the drive detected, xd_maxsectors should now be known. | |
200 | * If xd_maxsectors is 0, nothing was detected and we fall through | |
201 | * to return -ENODEV | |
202 | */ | |
203 | if (!xd_dma_buffer && xd_maxsectors) { | |
204 | xd_dma_buffer = (char *)xd_dma_mem_alloc(xd_maxsectors * 0x200); | |
205 | if (!xd_dma_buffer) { | |
206 | printk(KERN_ERR "xd: Out of memory.\n"); | |
207 | goto out3; | |
208 | } | |
209 | } | |
210 | ||
1da177e4 LT |
211 | err = -ENODEV; |
212 | if (!xd_drives) | |
213 | goto out3; | |
214 | ||
215 | for (i = 0; i < xd_drives; i++) { | |
216 | XD_INFO *p = &xd_info[i]; | |
217 | struct gendisk *disk = alloc_disk(64); | |
218 | if (!disk) | |
219 | goto Enomem; | |
220 | p->unit = i; | |
221 | disk->major = XT_DISK_MAJOR; | |
222 | disk->first_minor = i<<6; | |
223 | sprintf(disk->disk_name, "xd%c", i+'a'); | |
1da177e4 LT |
224 | disk->fops = &xd_fops; |
225 | disk->private_data = p; | |
226 | disk->queue = xd_queue; | |
227 | set_capacity(disk, p->heads * p->cylinders * p->sectors); | |
228 | printk(" %s: CHS=%d/%d/%d\n", disk->disk_name, | |
229 | p->cylinders, p->heads, p->sectors); | |
230 | xd_gendisk[i] = disk; | |
231 | } | |
232 | ||
233 | err = -EBUSY; | |
234 | if (request_irq(xd_irq,xd_interrupt_handler, 0, "XT hard disk", NULL)) { | |
235 | printk("xd: unable to get IRQ%d\n",xd_irq); | |
236 | goto out4; | |
237 | } | |
238 | ||
239 | if (request_dma(xd_dma,"xd")) { | |
240 | printk("xd: unable to get DMA%d\n",xd_dma); | |
241 | goto out5; | |
242 | } | |
243 | ||
244 | /* xd_maxsectors depends on controller - so set after detection */ | |
245 | blk_queue_max_sectors(xd_queue, xd_maxsectors); | |
246 | ||
247 | for (i = 0; i < xd_drives; i++) | |
248 | add_disk(xd_gendisk[i]); | |
249 | ||
250 | return 0; | |
251 | ||
252 | out5: | |
253 | free_irq(xd_irq, NULL); | |
254 | out4: | |
255 | for (i = 0; i < xd_drives; i++) | |
256 | put_disk(xd_gendisk[i]); | |
257 | out3: | |
a3b8d92d MG |
258 | if (xd_maxsectors) |
259 | release_region(xd_iobase,4); | |
260 | ||
261 | if (xd_dma_buffer) | |
262 | xd_dma_mem_free((unsigned long)xd_dma_buffer, | |
263 | xd_maxsectors * 0x200); | |
1da177e4 LT |
264 | out2: |
265 | blk_cleanup_queue(xd_queue); | |
266 | out1a: | |
267 | unregister_blkdev(XT_DISK_MAJOR, "xd"); | |
268 | out1: | |
1da177e4 LT |
269 | return err; |
270 | Enomem: | |
271 | err = -ENOMEM; | |
272 | while (i--) | |
273 | put_disk(xd_gendisk[i]); | |
274 | goto out3; | |
275 | } | |
276 | ||
277 | /* xd_detect: scan the possible BIOS ROM locations for the signature strings */ | |
278 | static u_char __init xd_detect (u_char *controller, unsigned int *address) | |
279 | { | |
280 | int i, j; | |
281 | ||
282 | if (xd_override) | |
283 | { | |
284 | *controller = xd_type; | |
285 | *address = 0; | |
286 | return(1); | |
287 | } | |
288 | ||
945f390f | 289 | for (i = 0; i < ARRAY_SIZE(xd_bases); i++) { |
1da177e4 LT |
290 | void __iomem *p = ioremap(xd_bases[i], 0x2000); |
291 | if (!p) | |
292 | continue; | |
945f390f | 293 | for (j = 1; j < ARRAY_SIZE(xd_sigs); j++) { |
1da177e4 LT |
294 | const char *s = xd_sigs[j].string; |
295 | if (check_signature(p + xd_sigs[j].offset, s, strlen(s))) { | |
296 | *controller = j; | |
297 | xd_type = j; | |
298 | *address = xd_bases[i]; | |
299 | iounmap(p); | |
300 | return 1; | |
301 | } | |
302 | } | |
303 | iounmap(p); | |
304 | } | |
305 | return 0; | |
306 | } | |
307 | ||
308 | /* do_xd_request: handle an incoming request */ | |
165125e1 | 309 | static void do_xd_request (struct request_queue * q) |
1da177e4 LT |
310 | { |
311 | struct request *req; | |
312 | ||
313 | if (xdc_busy) | |
314 | return; | |
315 | ||
9934c8c0 | 316 | req = blk_fetch_request(q); |
bab2a807 | 317 | while (req) { |
83096ebf | 318 | unsigned block = blk_rq_pos(req); |
bab2a807 | 319 | unsigned count = blk_rq_cur_sectors(req); |
1da177e4 | 320 | XD_INFO *disk = req->rq_disk->private_data; |
bab2a807 | 321 | int res = -EIO; |
1da177e4 LT |
322 | int retry; |
323 | ||
bab2a807 TH |
324 | if (!blk_fs_request(req)) |
325 | goto done; | |
326 | if (block + count > get_capacity(req->rq_disk)) | |
327 | goto done; | |
1da177e4 | 328 | for (retry = 0; (retry < XD_RETRIES) && !res; retry++) |
5b5c5d12 TH |
329 | res = xd_readwrite(rq_data_dir(req), disk, req->buffer, |
330 | block, count); | |
bab2a807 | 331 | done: |
f06d9a2b | 332 | /* wrap up, 0 = success, -errno = fail */ |
9934c8c0 TH |
333 | if (!__blk_end_request_cur(req, res)) |
334 | req = blk_fetch_request(q); | |
1da177e4 LT |
335 | } |
336 | } | |
337 | ||
a885c8c4 CH |
338 | static int xd_getgeo(struct block_device *bdev, struct hd_geometry *geo) |
339 | { | |
340 | XD_INFO *p = bdev->bd_disk->private_data; | |
341 | ||
342 | geo->heads = p->heads; | |
343 | geo->sectors = p->sectors; | |
344 | geo->cylinders = p->cylinders; | |
345 | return 0; | |
346 | } | |
347 | ||
1da177e4 | 348 | /* xd_ioctl: handle device ioctl's */ |
961846ca | 349 | static int xd_ioctl(struct block_device *bdev, fmode_t mode, u_int cmd, u_long arg) |
1da177e4 | 350 | { |
1da177e4 | 351 | switch (cmd) { |
1da177e4 LT |
352 | case HDIO_SET_DMA: |
353 | if (!capable(CAP_SYS_ADMIN)) return -EACCES; | |
354 | if (xdc_busy) return -EBUSY; | |
355 | nodma = !arg; | |
356 | if (nodma && xd_dma_buffer) { | |
357 | xd_dma_mem_free((unsigned long)xd_dma_buffer, | |
358 | xd_maxsectors * 0x200); | |
359 | xd_dma_buffer = NULL; | |
360 | } else if (!nodma && !xd_dma_buffer) { | |
361 | xd_dma_buffer = (char *)xd_dma_mem_alloc(xd_maxsectors * 0x200); | |
362 | if (!xd_dma_buffer) { | |
363 | nodma = XD_DONT_USE_DMA; | |
364 | return -ENOMEM; | |
365 | } | |
366 | } | |
367 | return 0; | |
368 | case HDIO_GET_DMA: | |
369 | return put_user(!nodma, (long __user *) arg); | |
370 | case HDIO_GET_MULTCOUNT: | |
371 | return put_user(xd_maxsectors, (long __user *) arg); | |
372 | default: | |
373 | return -EINVAL; | |
374 | } | |
375 | } | |
376 | ||
377 | /* xd_readwrite: handle a read/write request */ | |
378 | static int xd_readwrite (u_char operation,XD_INFO *p,char *buffer,u_int block,u_int count) | |
379 | { | |
380 | int drive = p->unit; | |
381 | u_char cmdblk[6],sense[4]; | |
382 | u_short track,cylinder; | |
383 | u_char head,sector,control,mode = PIO_MODE,temp; | |
384 | char **real_buffer; | |
385 | register int i; | |
386 | ||
387 | #ifdef DEBUG_READWRITE | |
388 | printk("xd_readwrite: operation = %s, drive = %d, buffer = 0x%X, block = %d, count = %d\n",operation == READ ? "read" : "write",drive,buffer,block,count); | |
389 | #endif /* DEBUG_READWRITE */ | |
390 | ||
391 | spin_unlock_irq(&xd_lock); | |
392 | ||
393 | control = p->control; | |
394 | if (!xd_dma_buffer) | |
395 | xd_dma_buffer = (char *)xd_dma_mem_alloc(xd_maxsectors * 0x200); | |
396 | while (count) { | |
397 | temp = count < xd_maxsectors ? count : xd_maxsectors; | |
398 | ||
399 | track = block / p->sectors; | |
400 | head = track % p->heads; | |
401 | cylinder = track / p->heads; | |
402 | sector = block % p->sectors; | |
403 | ||
404 | #ifdef DEBUG_READWRITE | |
405 | printk("xd_readwrite: drive = %d, head = %d, cylinder = %d, sector = %d, count = %d\n",drive,head,cylinder,sector,temp); | |
406 | #endif /* DEBUG_READWRITE */ | |
407 | ||
408 | if (xd_dma_buffer) { | |
409 | mode = xd_setup_dma(operation == READ ? DMA_MODE_READ : DMA_MODE_WRITE,(u_char *)(xd_dma_buffer),temp * 0x200); | |
410 | real_buffer = &xd_dma_buffer; | |
411 | for (i=0; i < (temp * 0x200); i++) | |
412 | xd_dma_buffer[i] = buffer[i]; | |
413 | } | |
414 | else | |
415 | real_buffer = &buffer; | |
416 | ||
417 | xd_build(cmdblk,operation == READ ? CMD_READ : CMD_WRITE,drive,head,cylinder,sector,temp & 0xFF,control); | |
418 | ||
419 | switch (xd_command(cmdblk,mode,(u_char *)(*real_buffer),(u_char *)(*real_buffer),sense,XD_TIMEOUT)) { | |
420 | case 1: | |
421 | printk("xd%c: %s timeout, recalibrating drive\n",'a'+drive,(operation == READ ? "read" : "write")); | |
422 | xd_recalibrate(drive); | |
423 | spin_lock_irq(&xd_lock); | |
f06d9a2b | 424 | return -EIO; |
1da177e4 LT |
425 | case 2: |
426 | if (sense[0] & 0x30) { | |
427 | printk("xd%c: %s - ",'a'+drive,(operation == READ ? "reading" : "writing")); | |
428 | switch ((sense[0] & 0x30) >> 4) { | |
429 | case 0: printk("drive error, code = 0x%X",sense[0] & 0x0F); | |
430 | break; | |
431 | case 1: printk("controller error, code = 0x%X",sense[0] & 0x0F); | |
432 | break; | |
433 | case 2: printk("command error, code = 0x%X",sense[0] & 0x0F); | |
434 | break; | |
435 | case 3: printk("miscellaneous error, code = 0x%X",sense[0] & 0x0F); | |
436 | break; | |
437 | } | |
438 | } | |
439 | if (sense[0] & 0x80) | |
440 | printk(" - CHS = %d/%d/%d\n",((sense[2] & 0xC0) << 2) | sense[3],sense[1] & 0x1F,sense[2] & 0x3F); | |
441 | /* reported drive number = (sense[1] & 0xE0) >> 5 */ | |
442 | else | |
443 | printk(" - no valid disk address\n"); | |
444 | spin_lock_irq(&xd_lock); | |
f06d9a2b | 445 | return -EIO; |
1da177e4 LT |
446 | } |
447 | if (xd_dma_buffer) | |
448 | for (i=0; i < (temp * 0x200); i++) | |
449 | buffer[i] = xd_dma_buffer[i]; | |
450 | ||
451 | count -= temp, buffer += temp * 0x200, block += temp; | |
452 | } | |
453 | spin_lock_irq(&xd_lock); | |
f06d9a2b | 454 | return 0; |
1da177e4 LT |
455 | } |
456 | ||
457 | /* xd_recalibrate: recalibrate a given drive and reset controller if necessary */ | |
458 | static void xd_recalibrate (u_char drive) | |
459 | { | |
460 | u_char cmdblk[6]; | |
461 | ||
462 | xd_build(cmdblk,CMD_RECALIBRATE,drive,0,0,0,0,0); | |
463 | if (xd_command(cmdblk,PIO_MODE,NULL,NULL,NULL,XD_TIMEOUT * 8)) | |
464 | printk("xd%c: warning! error recalibrating, controller may be unstable\n", 'a'+drive); | |
465 | } | |
466 | ||
467 | /* xd_interrupt_handler: interrupt service routine */ | |
7d12e780 | 468 | static irqreturn_t xd_interrupt_handler(int irq, void *dev_id) |
1da177e4 LT |
469 | { |
470 | if (inb(XD_STATUS) & STAT_INTERRUPT) { /* check if it was our device */ | |
471 | #ifdef DEBUG_OTHER | |
472 | printk("xd_interrupt_handler: interrupt detected\n"); | |
473 | #endif /* DEBUG_OTHER */ | |
474 | outb(0,XD_CONTROL); /* acknowledge interrupt */ | |
475 | wake_up(&xd_wait_int); /* and wake up sleeping processes */ | |
476 | return IRQ_HANDLED; | |
477 | } | |
478 | else | |
479 | printk("xd: unexpected interrupt\n"); | |
480 | return IRQ_NONE; | |
481 | } | |
482 | ||
483 | /* xd_setup_dma: set up the DMA controller for a data transfer */ | |
484 | static u_char xd_setup_dma (u_char mode,u_char *buffer,u_int count) | |
485 | { | |
486 | unsigned long f; | |
487 | ||
488 | if (nodma) | |
489 | return (PIO_MODE); | |
490 | if (((unsigned long) buffer & 0xFFFF0000) != (((unsigned long) buffer + count) & 0xFFFF0000)) { | |
491 | #ifdef DEBUG_OTHER | |
492 | printk("xd_setup_dma: using PIO, transfer overlaps 64k boundary\n"); | |
493 | #endif /* DEBUG_OTHER */ | |
494 | return (PIO_MODE); | |
495 | } | |
496 | ||
497 | f=claim_dma_lock(); | |
498 | disable_dma(xd_dma); | |
499 | clear_dma_ff(xd_dma); | |
500 | set_dma_mode(xd_dma,mode); | |
501 | set_dma_addr(xd_dma, (unsigned long) buffer); | |
502 | set_dma_count(xd_dma,count); | |
503 | ||
504 | release_dma_lock(f); | |
505 | ||
506 | return (DMA_MODE); /* use DMA and INT */ | |
507 | } | |
508 | ||
509 | /* xd_build: put stuff into an array in a format suitable for the controller */ | |
510 | static u_char *xd_build (u_char *cmdblk,u_char command,u_char drive,u_char head,u_short cylinder,u_char sector,u_char count,u_char control) | |
511 | { | |
512 | cmdblk[0] = command; | |
513 | cmdblk[1] = ((drive & 0x07) << 5) | (head & 0x1F); | |
514 | cmdblk[2] = ((cylinder & 0x300) >> 2) | (sector & 0x3F); | |
515 | cmdblk[3] = cylinder & 0xFF; | |
516 | cmdblk[4] = count; | |
517 | cmdblk[5] = control; | |
518 | ||
519 | return (cmdblk); | |
520 | } | |
521 | ||
522 | static void xd_watchdog (unsigned long unused) | |
523 | { | |
524 | xd_error = 1; | |
525 | wake_up(&xd_wait_int); | |
526 | } | |
527 | ||
528 | /* xd_waitport: waits until port & mask == flags or a timeout occurs. return 1 for a timeout */ | |
529 | static inline u_char xd_waitport (u_short port,u_char flags,u_char mask,u_long timeout) | |
530 | { | |
531 | u_long expiry = jiffies + timeout; | |
532 | int success; | |
533 | ||
534 | xdc_busy = 1; | |
86e84862 NA |
535 | while ((success = ((inb(port) & mask) != flags)) && time_before(jiffies, expiry)) |
536 | schedule_timeout_uninterruptible(1); | |
1da177e4 LT |
537 | xdc_busy = 0; |
538 | return (success); | |
539 | } | |
540 | ||
541 | static inline u_int xd_wait_for_IRQ (void) | |
542 | { | |
543 | unsigned long flags; | |
544 | xd_watchdog_int.expires = jiffies + 8 * HZ; | |
545 | add_timer(&xd_watchdog_int); | |
546 | ||
547 | flags=claim_dma_lock(); | |
548 | enable_dma(xd_dma); | |
549 | release_dma_lock(flags); | |
550 | ||
551 | sleep_on(&xd_wait_int); | |
552 | del_timer(&xd_watchdog_int); | |
553 | xdc_busy = 0; | |
554 | ||
555 | flags=claim_dma_lock(); | |
556 | disable_dma(xd_dma); | |
557 | release_dma_lock(flags); | |
558 | ||
559 | if (xd_error) { | |
560 | printk("xd: missed IRQ - command aborted\n"); | |
561 | xd_error = 0; | |
562 | return (1); | |
563 | } | |
564 | return (0); | |
565 | } | |
566 | ||
567 | /* xd_command: handle all data transfers necessary for a single command */ | |
568 | static u_int xd_command (u_char *command,u_char mode,u_char *indata,u_char *outdata,u_char *sense,u_long timeout) | |
569 | { | |
570 | u_char cmdblk[6],csb,complete = 0; | |
571 | ||
572 | #ifdef DEBUG_COMMAND | |
573 | printk("xd_command: command = 0x%X, mode = 0x%X, indata = 0x%X, outdata = 0x%X, sense = 0x%X\n",command,mode,indata,outdata,sense); | |
574 | #endif /* DEBUG_COMMAND */ | |
575 | ||
576 | outb(0,XD_SELECT); | |
577 | outb(mode,XD_CONTROL); | |
578 | ||
579 | if (xd_waitport(XD_STATUS,STAT_SELECT,STAT_SELECT,timeout)) | |
580 | return (1); | |
581 | ||
582 | while (!complete) { | |
583 | if (xd_waitport(XD_STATUS,STAT_READY,STAT_READY,timeout)) | |
584 | return (1); | |
585 | ||
586 | switch (inb(XD_STATUS) & (STAT_COMMAND | STAT_INPUT)) { | |
587 | case 0: | |
588 | if (mode == DMA_MODE) { | |
589 | if (xd_wait_for_IRQ()) | |
590 | return (1); | |
591 | } else | |
592 | outb(outdata ? *outdata++ : 0,XD_DATA); | |
593 | break; | |
594 | case STAT_INPUT: | |
595 | if (mode == DMA_MODE) { | |
596 | if (xd_wait_for_IRQ()) | |
597 | return (1); | |
598 | } else | |
599 | if (indata) | |
600 | *indata++ = inb(XD_DATA); | |
601 | else | |
602 | inb(XD_DATA); | |
603 | break; | |
604 | case STAT_COMMAND: | |
605 | outb(command ? *command++ : 0,XD_DATA); | |
606 | break; | |
607 | case STAT_COMMAND | STAT_INPUT: | |
608 | complete = 1; | |
609 | break; | |
610 | } | |
611 | } | |
612 | csb = inb(XD_DATA); | |
613 | ||
614 | if (xd_waitport(XD_STATUS,0,STAT_SELECT,timeout)) /* wait until deselected */ | |
615 | return (1); | |
616 | ||
617 | if (csb & CSB_ERROR) { /* read sense data if error */ | |
618 | xd_build(cmdblk,CMD_SENSE,(csb & CSB_LUN) >> 5,0,0,0,0,0); | |
619 | if (xd_command(cmdblk,0,sense,NULL,NULL,XD_TIMEOUT)) | |
620 | printk("xd: warning! sense command failed!\n"); | |
621 | } | |
622 | ||
623 | #ifdef DEBUG_COMMAND | |
624 | printk("xd_command: completed with csb = 0x%X\n",csb); | |
625 | #endif /* DEBUG_COMMAND */ | |
626 | ||
627 | return (csb & CSB_ERROR); | |
628 | } | |
629 | ||
630 | static u_char __init xd_initdrives (void (*init_drive)(u_char drive)) | |
631 | { | |
632 | u_char cmdblk[6],i,count = 0; | |
633 | ||
634 | for (i = 0; i < XD_MAXDRIVES; i++) { | |
635 | xd_build(cmdblk,CMD_TESTREADY,i,0,0,0,0,0); | |
636 | if (!xd_command(cmdblk,PIO_MODE,NULL,NULL,NULL,XD_TIMEOUT*8)) { | |
f6a2f340 | 637 | msleep_interruptible(XD_INIT_DISK_DELAY); |
1da177e4 LT |
638 | |
639 | init_drive(count); | |
640 | count++; | |
641 | ||
f6a2f340 | 642 | msleep_interruptible(XD_INIT_DISK_DELAY); |
1da177e4 LT |
643 | } |
644 | } | |
645 | return (count); | |
646 | } | |
647 | ||
648 | static void __init xd_manual_geo_set (u_char drive) | |
649 | { | |
650 | xd_info[drive].heads = (u_char)(xd_geo[3 * drive + 1]); | |
651 | xd_info[drive].cylinders = (u_short)(xd_geo[3 * drive]); | |
652 | xd_info[drive].sectors = (u_char)(xd_geo[3 * drive + 2]); | |
653 | } | |
654 | ||
655 | static void __init xd_dtc_init_controller (unsigned int address) | |
656 | { | |
657 | switch (address) { | |
658 | case 0x00000: | |
659 | case 0xC8000: break; /*initial: 0x320 */ | |
660 | case 0xCA000: xd_iobase = 0x324; | |
661 | case 0xD0000: /*5150CX*/ | |
662 | case 0xD8000: break; /*5150CX & 5150XL*/ | |
663 | default: printk("xd_dtc_init_controller: unsupported BIOS address %06x\n",address); | |
664 | break; | |
665 | } | |
666 | xd_maxsectors = 0x01; /* my card seems to have trouble doing multi-block transfers? */ | |
667 | ||
668 | outb(0,XD_RESET); /* reset the controller */ | |
669 | } | |
670 | ||
671 | ||
672 | static void __init xd_dtc5150cx_init_drive (u_char drive) | |
673 | { | |
674 | /* values from controller's BIOS - BIOS chip may be removed */ | |
675 | static u_short geometry_table[][4] = { | |
676 | {0x200,8,0x200,0x100}, | |
677 | {0x267,2,0x267,0x267}, | |
678 | {0x264,4,0x264,0x80}, | |
679 | {0x132,4,0x132,0x0}, | |
680 | {0x132,2,0x80, 0x132}, | |
681 | {0x177,8,0x177,0x0}, | |
682 | {0x132,8,0x84, 0x0}, | |
683 | {}, /* not used */ | |
684 | {0x132,6,0x80, 0x100}, | |
685 | {0x200,6,0x100,0x100}, | |
686 | {0x264,2,0x264,0x80}, | |
687 | {0x280,4,0x280,0x100}, | |
688 | {0x2B9,3,0x2B9,0x2B9}, | |
689 | {0x2B9,5,0x2B9,0x2B9}, | |
690 | {0x280,6,0x280,0x100}, | |
691 | {0x132,4,0x132,0x0}}; | |
692 | u_char n; | |
693 | ||
694 | n = inb(XD_JUMPER); | |
695 | n = (drive ? n : (n >> 2)) & 0x33; | |
696 | n = (n | (n >> 2)) & 0x0F; | |
697 | if (xd_geo[3*drive]) | |
698 | xd_manual_geo_set(drive); | |
699 | else | |
700 | if (n != 7) { | |
701 | xd_info[drive].heads = (u_char)(geometry_table[n][1]); /* heads */ | |
702 | xd_info[drive].cylinders = geometry_table[n][0]; /* cylinders */ | |
703 | xd_info[drive].sectors = 17; /* sectors */ | |
704 | #if 0 | |
705 | xd_info[drive].rwrite = geometry_table[n][2]; /* reduced write */ | |
706 | xd_info[drive].precomp = geometry_table[n][3] /* write precomp */ | |
707 | xd_info[drive].ecc = 0x0B; /* ecc length */ | |
708 | #endif /* 0 */ | |
709 | } | |
710 | else { | |
711 | printk("xd%c: undetermined drive geometry\n",'a'+drive); | |
712 | return; | |
713 | } | |
714 | xd_info[drive].control = 5; /* control byte */ | |
715 | xd_setparam(CMD_DTCSETPARAM,drive,xd_info[drive].heads,xd_info[drive].cylinders,geometry_table[n][2],geometry_table[n][3],0x0B); | |
716 | xd_recalibrate(drive); | |
717 | } | |
718 | ||
719 | static void __init xd_dtc_init_drive (u_char drive) | |
720 | { | |
721 | u_char cmdblk[6],buf[64]; | |
722 | ||
723 | xd_build(cmdblk,CMD_DTCGETGEOM,drive,0,0,0,0,0); | |
724 | if (!xd_command(cmdblk,PIO_MODE,buf,NULL,NULL,XD_TIMEOUT * 2)) { | |
725 | xd_info[drive].heads = buf[0x0A]; /* heads */ | |
726 | xd_info[drive].cylinders = ((u_short *) (buf))[0x04]; /* cylinders */ | |
727 | xd_info[drive].sectors = 17; /* sectors */ | |
728 | if (xd_geo[3*drive]) | |
729 | xd_manual_geo_set(drive); | |
730 | #if 0 | |
731 | xd_info[drive].rwrite = ((u_short *) (buf + 1))[0x05]; /* reduced write */ | |
732 | xd_info[drive].precomp = ((u_short *) (buf + 1))[0x06]; /* write precomp */ | |
733 | xd_info[drive].ecc = buf[0x0F]; /* ecc length */ | |
734 | #endif /* 0 */ | |
735 | xd_info[drive].control = 0; /* control byte */ | |
736 | ||
737 | xd_setparam(CMD_DTCSETPARAM,drive,xd_info[drive].heads,xd_info[drive].cylinders,((u_short *) (buf + 1))[0x05],((u_short *) (buf + 1))[0x06],buf[0x0F]); | |
738 | xd_build(cmdblk,CMD_DTCSETSTEP,drive,0,0,0,0,7); | |
739 | if (xd_command(cmdblk,PIO_MODE,NULL,NULL,NULL,XD_TIMEOUT * 2)) | |
740 | printk("xd_dtc_init_drive: error setting step rate for xd%c\n", 'a'+drive); | |
741 | } | |
742 | else | |
743 | printk("xd_dtc_init_drive: error reading geometry for xd%c\n", 'a'+drive); | |
744 | } | |
745 | ||
746 | static void __init xd_wd_init_controller (unsigned int address) | |
747 | { | |
748 | switch (address) { | |
749 | case 0x00000: | |
750 | case 0xC8000: break; /*initial: 0x320 */ | |
751 | case 0xCA000: xd_iobase = 0x324; break; | |
752 | case 0xCC000: xd_iobase = 0x328; break; | |
753 | case 0xCE000: xd_iobase = 0x32C; break; | |
754 | case 0xD0000: xd_iobase = 0x328; break; /* ? */ | |
755 | case 0xD8000: xd_iobase = 0x32C; break; /* ? */ | |
756 | default: printk("xd_wd_init_controller: unsupported BIOS address %06x\n",address); | |
757 | break; | |
758 | } | |
759 | xd_maxsectors = 0x01; /* this one doesn't wrap properly either... */ | |
760 | ||
761 | outb(0,XD_RESET); /* reset the controller */ | |
762 | ||
f6a2f340 | 763 | msleep(XD_INIT_DISK_DELAY); |
1da177e4 LT |
764 | } |
765 | ||
766 | static void __init xd_wd_init_drive (u_char drive) | |
767 | { | |
768 | /* values from controller's BIOS - BIOS may be disabled */ | |
769 | static u_short geometry_table[][4] = { | |
770 | {0x264,4,0x1C2,0x1C2}, /* common part */ | |
771 | {0x132,4,0x099,0x0}, | |
772 | {0x267,2,0x1C2,0x1C2}, | |
773 | {0x267,4,0x1C2,0x1C2}, | |
774 | ||
775 | {0x334,6,0x335,0x335}, /* 1004 series RLL */ | |
776 | {0x30E,4,0x30F,0x3DC}, | |
777 | {0x30E,2,0x30F,0x30F}, | |
778 | {0x267,4,0x268,0x268}, | |
779 | ||
780 | {0x3D5,5,0x3D6,0x3D6}, /* 1002 series RLL */ | |
781 | {0x3DB,7,0x3DC,0x3DC}, | |
782 | {0x264,4,0x265,0x265}, | |
783 | {0x267,4,0x268,0x268}}; | |
784 | ||
785 | u_char cmdblk[6],buf[0x200]; | |
786 | u_char n = 0,rll,jumper_state,use_jumper_geo; | |
787 | u_char wd_1002 = (xd_sigs[xd_type].string[7] == '6'); | |
788 | ||
789 | jumper_state = ~(inb(0x322)); | |
790 | if (jumper_state & 0x40) | |
791 | xd_irq = 9; | |
792 | rll = (jumper_state & 0x30) ? (0x04 << wd_1002) : 0; | |
793 | xd_build(cmdblk,CMD_READ,drive,0,0,0,1,0); | |
794 | if (!xd_command(cmdblk,PIO_MODE,buf,NULL,NULL,XD_TIMEOUT * 2)) { | |
795 | xd_info[drive].heads = buf[0x1AF]; /* heads */ | |
796 | xd_info[drive].cylinders = ((u_short *) (buf + 1))[0xD6]; /* cylinders */ | |
797 | xd_info[drive].sectors = 17; /* sectors */ | |
798 | if (xd_geo[3*drive]) | |
799 | xd_manual_geo_set(drive); | |
800 | #if 0 | |
801 | xd_info[drive].rwrite = ((u_short *) (buf))[0xD8]; /* reduced write */ | |
802 | xd_info[drive].wprecomp = ((u_short *) (buf))[0xDA]; /* write precomp */ | |
803 | xd_info[drive].ecc = buf[0x1B4]; /* ecc length */ | |
804 | #endif /* 0 */ | |
805 | xd_info[drive].control = buf[0x1B5]; /* control byte */ | |
806 | use_jumper_geo = !(xd_info[drive].heads) || !(xd_info[drive].cylinders); | |
807 | if (xd_geo[3*drive]) { | |
808 | xd_manual_geo_set(drive); | |
809 | xd_info[drive].control = rll ? 7 : 5; | |
810 | } | |
811 | else if (use_jumper_geo) { | |
812 | n = (((jumper_state & 0x0F) >> (drive << 1)) & 0x03) | rll; | |
813 | xd_info[drive].cylinders = geometry_table[n][0]; | |
814 | xd_info[drive].heads = (u_char)(geometry_table[n][1]); | |
815 | xd_info[drive].control = rll ? 7 : 5; | |
816 | #if 0 | |
817 | xd_info[drive].rwrite = geometry_table[n][2]; | |
818 | xd_info[drive].wprecomp = geometry_table[n][3]; | |
819 | xd_info[drive].ecc = 0x0B; | |
820 | #endif /* 0 */ | |
821 | } | |
822 | if (!wd_1002) { | |
823 | if (use_jumper_geo) | |
824 | xd_setparam(CMD_WDSETPARAM,drive,xd_info[drive].heads,xd_info[drive].cylinders, | |
825 | geometry_table[n][2],geometry_table[n][3],0x0B); | |
826 | else | |
827 | xd_setparam(CMD_WDSETPARAM,drive,xd_info[drive].heads,xd_info[drive].cylinders, | |
828 | ((u_short *) (buf))[0xD8],((u_short *) (buf))[0xDA],buf[0x1B4]); | |
829 | } | |
830 | /* 1002 based RLL controller requests converted addressing, but reports physical | |
831 | (physical 26 sec., logical 17 sec.) | |
832 | 1004 based ???? */ | |
833 | if (rll & wd_1002) { | |
834 | if ((xd_info[drive].cylinders *= 26, | |
835 | xd_info[drive].cylinders /= 17) > 1023) | |
836 | xd_info[drive].cylinders = 1023; /* 1024 ? */ | |
837 | #if 0 | |
838 | xd_info[drive].rwrite *= 26; | |
839 | xd_info[drive].rwrite /= 17; | |
840 | xd_info[drive].wprecomp *= 26 | |
841 | xd_info[drive].wprecomp /= 17; | |
842 | #endif /* 0 */ | |
843 | } | |
844 | } | |
845 | else | |
846 | printk("xd_wd_init_drive: error reading geometry for xd%c\n",'a'+drive); | |
847 | ||
848 | } | |
849 | ||
850 | static void __init xd_seagate_init_controller (unsigned int address) | |
851 | { | |
852 | switch (address) { | |
853 | case 0x00000: | |
854 | case 0xC8000: break; /*initial: 0x320 */ | |
855 | case 0xD0000: xd_iobase = 0x324; break; | |
856 | case 0xD8000: xd_iobase = 0x328; break; | |
857 | case 0xE0000: xd_iobase = 0x32C; break; | |
858 | default: printk("xd_seagate_init_controller: unsupported BIOS address %06x\n",address); | |
859 | break; | |
860 | } | |
861 | xd_maxsectors = 0x40; | |
862 | ||
863 | outb(0,XD_RESET); /* reset the controller */ | |
864 | } | |
865 | ||
866 | static void __init xd_seagate_init_drive (u_char drive) | |
867 | { | |
868 | u_char cmdblk[6],buf[0x200]; | |
869 | ||
870 | xd_build(cmdblk,CMD_ST11GETGEOM,drive,0,0,0,1,0); | |
871 | if (!xd_command(cmdblk,PIO_MODE,buf,NULL,NULL,XD_TIMEOUT * 2)) { | |
872 | xd_info[drive].heads = buf[0x04]; /* heads */ | |
873 | xd_info[drive].cylinders = (buf[0x02] << 8) | buf[0x03]; /* cylinders */ | |
874 | xd_info[drive].sectors = buf[0x05]; /* sectors */ | |
875 | xd_info[drive].control = 0; /* control byte */ | |
876 | } | |
877 | else | |
878 | printk("xd_seagate_init_drive: error reading geometry from xd%c\n", 'a'+drive); | |
879 | } | |
880 | ||
881 | /* Omti support courtesy Dirk Melchers */ | |
882 | static void __init xd_omti_init_controller (unsigned int address) | |
883 | { | |
884 | switch (address) { | |
885 | case 0x00000: | |
886 | case 0xC8000: break; /*initial: 0x320 */ | |
887 | case 0xD0000: xd_iobase = 0x324; break; | |
888 | case 0xD8000: xd_iobase = 0x328; break; | |
889 | case 0xE0000: xd_iobase = 0x32C; break; | |
890 | default: printk("xd_omti_init_controller: unsupported BIOS address %06x\n",address); | |
891 | break; | |
892 | } | |
893 | ||
894 | xd_maxsectors = 0x40; | |
895 | ||
896 | outb(0,XD_RESET); /* reset the controller */ | |
897 | } | |
898 | ||
899 | static void __init xd_omti_init_drive (u_char drive) | |
900 | { | |
901 | /* gets infos from drive */ | |
902 | xd_override_init_drive(drive); | |
903 | ||
904 | /* set other parameters, Hardcoded, not that nice :-) */ | |
905 | xd_info[drive].control = 2; | |
906 | } | |
907 | ||
908 | /* Xebec support (AK) */ | |
909 | static void __init xd_xebec_init_controller (unsigned int address) | |
910 | { | |
911 | /* iobase may be set manually in range 0x300 - 0x33C | |
912 | irq may be set manually to 2(9),3,4,5,6,7 | |
913 | dma may be set manually to 1,2,3 | |
914 | (How to detect them ???) | |
915 | BIOS address may be set manually in range 0x0 - 0xF8000 | |
916 | If you need non-standard settings use the xd=... command */ | |
917 | ||
918 | switch (address) { | |
919 | case 0x00000: | |
920 | case 0xC8000: /* initially: xd_iobase==0x320 */ | |
921 | case 0xD0000: | |
922 | case 0xD2000: | |
923 | case 0xD4000: | |
924 | case 0xD6000: | |
925 | case 0xD8000: | |
926 | case 0xDA000: | |
927 | case 0xDC000: | |
928 | case 0xDE000: | |
929 | case 0xE0000: break; | |
930 | default: printk("xd_xebec_init_controller: unsupported BIOS address %06x\n",address); | |
931 | break; | |
932 | } | |
933 | ||
934 | xd_maxsectors = 0x01; | |
935 | outb(0,XD_RESET); /* reset the controller */ | |
936 | ||
f6a2f340 | 937 | msleep(XD_INIT_DISK_DELAY); |
1da177e4 LT |
938 | } |
939 | ||
940 | static void __init xd_xebec_init_drive (u_char drive) | |
941 | { | |
942 | /* values from controller's BIOS - BIOS chip may be removed */ | |
943 | static u_short geometry_table[][5] = { | |
944 | {0x132,4,0x080,0x080,0x7}, | |
945 | {0x132,4,0x080,0x080,0x17}, | |
946 | {0x264,2,0x100,0x100,0x7}, | |
947 | {0x264,2,0x100,0x100,0x17}, | |
948 | {0x132,8,0x080,0x080,0x7}, | |
949 | {0x132,8,0x080,0x080,0x17}, | |
950 | {0x264,4,0x100,0x100,0x6}, | |
951 | {0x264,4,0x100,0x100,0x17}, | |
952 | {0x2BC,5,0x2BC,0x12C,0x6}, | |
953 | {0x3A5,4,0x3A5,0x3A5,0x7}, | |
954 | {0x26C,6,0x26C,0x26C,0x7}, | |
955 | {0x200,8,0x200,0x100,0x17}, | |
956 | {0x400,5,0x400,0x400,0x7}, | |
957 | {0x400,6,0x400,0x400,0x7}, | |
958 | {0x264,8,0x264,0x200,0x17}, | |
959 | {0x33E,7,0x33E,0x200,0x7}}; | |
960 | u_char n; | |
961 | ||
962 | n = inb(XD_JUMPER) & 0x0F; /* BIOS's drive number: same geometry | |
963 | is assumed for BOTH drives */ | |
964 | if (xd_geo[3*drive]) | |
965 | xd_manual_geo_set(drive); | |
966 | else { | |
967 | xd_info[drive].heads = (u_char)(geometry_table[n][1]); /* heads */ | |
968 | xd_info[drive].cylinders = geometry_table[n][0]; /* cylinders */ | |
969 | xd_info[drive].sectors = 17; /* sectors */ | |
970 | #if 0 | |
971 | xd_info[drive].rwrite = geometry_table[n][2]; /* reduced write */ | |
972 | xd_info[drive].precomp = geometry_table[n][3] /* write precomp */ | |
973 | xd_info[drive].ecc = 0x0B; /* ecc length */ | |
974 | #endif /* 0 */ | |
975 | } | |
976 | xd_info[drive].control = geometry_table[n][4]; /* control byte */ | |
977 | xd_setparam(CMD_XBSETPARAM,drive,xd_info[drive].heads,xd_info[drive].cylinders,geometry_table[n][2],geometry_table[n][3],0x0B); | |
978 | xd_recalibrate(drive); | |
979 | } | |
980 | ||
981 | /* xd_override_init_drive: this finds disk geometry in a "binary search" style, narrowing in on the "correct" number of heads | |
982 | etc. by trying values until it gets the highest successful value. Idea courtesy Salvador Abreu (spa@fct.unl.pt). */ | |
983 | static void __init xd_override_init_drive (u_char drive) | |
984 | { | |
985 | u_short min[] = { 0,0,0 },max[] = { 16,1024,64 },test[] = { 0,0,0 }; | |
986 | u_char cmdblk[6],i; | |
987 | ||
988 | if (xd_geo[3*drive]) | |
989 | xd_manual_geo_set(drive); | |
990 | else { | |
991 | for (i = 0; i < 3; i++) { | |
992 | while (min[i] != max[i] - 1) { | |
993 | test[i] = (min[i] + max[i]) / 2; | |
994 | xd_build(cmdblk,CMD_SEEK,drive,(u_char) test[0],(u_short) test[1],(u_char) test[2],0,0); | |
995 | if (!xd_command(cmdblk,PIO_MODE,NULL,NULL,NULL,XD_TIMEOUT * 2)) | |
996 | min[i] = test[i]; | |
997 | else | |
998 | max[i] = test[i]; | |
999 | } | |
1000 | test[i] = min[i]; | |
1001 | } | |
1002 | xd_info[drive].heads = (u_char) min[0] + 1; | |
1003 | xd_info[drive].cylinders = (u_short) min[1] + 1; | |
1004 | xd_info[drive].sectors = (u_char) min[2] + 1; | |
1005 | } | |
1006 | xd_info[drive].control = 0; | |
1007 | } | |
1008 | ||
1009 | /* xd_setup: initialise controller from command line parameters */ | |
1010 | static void __init do_xd_setup (int *integers) | |
1011 | { | |
1012 | switch (integers[0]) { | |
1013 | case 4: if (integers[4] < 0) | |
1014 | nodma = 1; | |
1015 | else if (integers[4] < 8) | |
1016 | xd_dma = integers[4]; | |
1017 | case 3: if ((integers[3] > 0) && (integers[3] <= 0x3FC)) | |
1018 | xd_iobase = integers[3]; | |
1019 | case 2: if ((integers[2] > 0) && (integers[2] < 16)) | |
1020 | xd_irq = integers[2]; | |
1021 | case 1: xd_override = 1; | |
945f390f | 1022 | if ((integers[1] >= 0) && (integers[1] < ARRAY_SIZE(xd_sigs))) |
1da177e4 LT |
1023 | xd_type = integers[1]; |
1024 | case 0: break; | |
1025 | default:printk("xd: too many parameters for xd\n"); | |
1026 | } | |
1027 | xd_maxsectors = 0x01; | |
1028 | } | |
1029 | ||
1030 | /* xd_setparam: set the drive characteristics */ | |
1031 | static void __init xd_setparam (u_char command,u_char drive,u_char heads,u_short cylinders,u_short rwrite,u_short wprecomp,u_char ecc) | |
1032 | { | |
1033 | u_char cmdblk[14]; | |
1034 | ||
1035 | xd_build(cmdblk,command,drive,0,0,0,0,0); | |
1036 | cmdblk[6] = (u_char) (cylinders >> 8) & 0x03; | |
1037 | cmdblk[7] = (u_char) (cylinders & 0xFF); | |
1038 | cmdblk[8] = heads & 0x1F; | |
1039 | cmdblk[9] = (u_char) (rwrite >> 8) & 0x03; | |
1040 | cmdblk[10] = (u_char) (rwrite & 0xFF); | |
1041 | cmdblk[11] = (u_char) (wprecomp >> 8) & 0x03; | |
1042 | cmdblk[12] = (u_char) (wprecomp & 0xFF); | |
1043 | cmdblk[13] = ecc; | |
1044 | ||
1045 | /* Some controllers require geometry info as data, not command */ | |
1046 | ||
1047 | if (xd_command(cmdblk,PIO_MODE,NULL,&cmdblk[6],NULL,XD_TIMEOUT * 2)) | |
1048 | printk("xd: error setting characteristics for xd%c\n", 'a'+drive); | |
1049 | } | |
1050 | ||
1051 | ||
1052 | #ifdef MODULE | |
1053 | ||
1054 | module_param_array(xd, int, NULL, 0); | |
1055 | module_param_array(xd_geo, int, NULL, 0); | |
1056 | module_param(nodma, bool, 0); | |
1057 | ||
1058 | MODULE_LICENSE("GPL"); | |
1059 | ||
1060 | void cleanup_module(void) | |
1061 | { | |
1062 | int i; | |
1063 | unregister_blkdev(XT_DISK_MAJOR, "xd"); | |
1064 | for (i = 0; i < xd_drives; i++) { | |
1065 | del_gendisk(xd_gendisk[i]); | |
1066 | put_disk(xd_gendisk[i]); | |
1067 | } | |
1068 | blk_cleanup_queue(xd_queue); | |
1069 | release_region(xd_iobase,4); | |
1070 | if (xd_drives) { | |
1071 | free_irq(xd_irq, NULL); | |
1072 | free_dma(xd_dma); | |
1073 | if (xd_dma_buffer) | |
1074 | xd_dma_mem_free((unsigned long)xd_dma_buffer, xd_maxsectors * 0x200); | |
1075 | } | |
1076 | } | |
1077 | #else | |
1078 | ||
1079 | static int __init xd_setup (char *str) | |
1080 | { | |
1081 | int ints[5]; | |
1082 | get_options (str, ARRAY_SIZE (ints), ints); | |
1083 | do_xd_setup (ints); | |
1084 | return 1; | |
1085 | } | |
1086 | ||
1087 | /* xd_manual_geo_init: initialise drive geometry from command line parameters | |
1088 | (used only for WD drives) */ | |
1089 | static int __init xd_manual_geo_init (char *str) | |
1090 | { | |
1091 | int i, integers[1 + 3*XD_MAXDRIVES]; | |
1092 | ||
1093 | get_options (str, ARRAY_SIZE (integers), integers); | |
1094 | if (integers[0]%3 != 0) { | |
1095 | printk("xd: incorrect number of parameters for xd_geo\n"); | |
1096 | return 1; | |
1097 | } | |
1098 | for (i = 0; (i < integers[0]) && (i < 3*XD_MAXDRIVES); i++) | |
1099 | xd_geo[i] = integers[i+1]; | |
1100 | return 1; | |
1101 | } | |
1102 | ||
1103 | __setup ("xd=", xd_setup); | |
1104 | __setup ("xd_geo=", xd_manual_geo_init); | |
1105 | ||
1106 | #endif /* MODULE */ | |
1107 | ||
1108 | module_init(xd_init); | |
1109 | MODULE_ALIAS_BLOCKDEV_MAJOR(XT_DISK_MAJOR); |