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> | |
2a48fc0a | 49 | #include <linux/mutex.h> |
1da177e4 | 50 | #include <linux/blkpg.h> |
f6a2f340 | 51 | #include <linux/delay.h> |
53d5ed62 | 52 | #include <linux/io.h> |
5a0e3ad6 | 53 | #include <linux/gfp.h> |
1da177e4 | 54 | |
1da177e4 LT |
55 | #include <asm/uaccess.h> |
56 | #include <asm/dma.h> | |
57 | ||
58 | #include "xd.h" | |
59 | ||
2a48fc0a | 60 | static DEFINE_MUTEX(xd_mutex); |
1da177e4 LT |
61 | static void __init do_xd_setup (int *integers); |
62 | #ifdef MODULE | |
63 | static int xd[5] = { -1,-1,-1,-1, }; | |
64 | #endif | |
65 | ||
66 | #define XD_DONT_USE_DMA 0 /* Initial value. may be overriden using | |
67 | "nodma" module option */ | |
f6a2f340 | 68 | #define XD_INIT_DISK_DELAY (30) /* 30 ms delay during disk initialization */ |
1da177e4 LT |
69 | |
70 | /* Above may need to be increased if a problem with the 2nd drive detection | |
71 | (ST11M controller) or resetting a controller (WD) appears */ | |
72 | ||
73 | static XD_INFO xd_info[XD_MAXDRIVES]; | |
74 | ||
75 | /* If you try this driver and find that your card is not detected by the driver at bootup, you need to add your BIOS | |
76 | signature and details to the following list of signatures. A BIOS signature is a string embedded into the first | |
77 | few bytes of your controller's on-board ROM BIOS. To find out what yours is, use something like MS-DOS's DEBUG | |
78 | command. Run DEBUG, and then you can examine your BIOS signature with: | |
79 | ||
80 | d xxxx:0000 | |
81 | ||
82 | where xxxx is the segment of your controller (like C800 or D000 or something). On the ASCII dump at the right, you should | |
83 | be able to see a string mentioning the manufacturer's copyright etc. Add this string into the table below. The parameters | |
84 | in the table are, in order: | |
85 | ||
86 | offset ; this is the offset (in bytes) from the start of your ROM where the signature starts | |
87 | signature ; this is the actual text of the signature | |
88 | xd_?_init_controller ; this is the controller init routine used by your controller | |
89 | xd_?_init_drive ; this is the drive init routine used by your controller | |
90 | ||
91 | The controllers directly supported at the moment are: DTC 5150x, WD 1004A27X, ST11M/R and override. If your controller is | |
92 | made by the same manufacturer as one of these, try using the same init routines as they do. If that doesn't work, your | |
93 | best bet is to use the "override" routines. These routines use a "portable" method of getting the disk's geometry, and | |
94 | 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>. | |
95 | ||
96 | NOTE: You can now specify your XT controller's parameters from the command line in the form xd=TYPE,IRQ,IO,DMA. The driver | |
97 | should be able to detect your drive's geometry from this info. (eg: xd=0,5,0x320,3 is the "standard"). */ | |
98 | ||
99 | #include <asm/page.h> | |
100 | #define xd_dma_mem_alloc(size) __get_dma_pages(GFP_KERNEL,get_order(size)) | |
101 | #define xd_dma_mem_free(addr, size) free_pages(addr, get_order(size)) | |
102 | static char *xd_dma_buffer; | |
103 | ||
104 | static XD_SIGNATURE xd_sigs[] __initdata = { | |
105 | { 0x0000,"Override geometry handler",NULL,xd_override_init_drive,"n unknown" }, /* Pat Mackinlay, pat@it.com.au */ | |
106 | { 0x0008,"[BXD06 (C) DTC 17-MAY-1985]",xd_dtc_init_controller,xd_dtc5150cx_init_drive," DTC 5150CX" }, /* Andrzej Krzysztofowicz, ankry@mif.pg.gda.pl */ | |
107 | { 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 */ | |
108 | { 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 */ | |
109 | { 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 */ | |
110 | { 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 */ | |
111 | { 0x0015,"SEAGATE ST11 BIOS REVISION",xd_seagate_init_controller,xd_seagate_init_drive," Seagate ST11M/R" }, /* Salvador Abreu, spa@fct.unl.pt */ | |
112 | { 0x0010,"ST11R BIOS",xd_seagate_init_controller,xd_seagate_init_drive," Seagate ST11M/R" }, /* Risto Kankkunen, risto.kankkunen@cs.helsinki.fi */ | |
113 | { 0x0010,"ST11 BIOS v1.7",xd_seagate_init_controller,xd_seagate_init_drive," Seagate ST11R" }, /* Alan Hourihane, alanh@fairlite.demon.co.uk */ | |
114 | { 0x1000,"(c)Copyright 1987 SMS",xd_omti_init_controller,xd_omti_init_drive,"n OMTI 5520" }, /* Dirk Melchers, dirk@merlin.nbg.sub.org */ | |
115 | { 0x0006,"COPYRIGHT XEBEC (C) 1984",xd_xebec_init_controller,xd_xebec_init_drive," XEBEC" }, /* Andrzej Krzysztofowicz, ankry@mif.pg.gda.pl */ | |
116 | { 0x0008,"(C) Copyright 1984 Western Digital Corp", xd_wd_init_controller, xd_wd_init_drive," Western Dig. 1002s-wx2" }, | |
117 | { 0x0008,"(C) Copyright 1986 Western Digital Corporation", xd_wd_init_controller, xd_wd_init_drive," 1986 Western Digital" }, /* jfree@sovereign.org */ | |
118 | }; | |
119 | ||
120 | static unsigned int xd_bases[] __initdata = | |
121 | { | |
122 | 0xC8000, 0xCA000, 0xCC000, | |
123 | 0xCE000, 0xD0000, 0xD2000, | |
124 | 0xD4000, 0xD6000, 0xD8000, | |
125 | 0xDA000, 0xDC000, 0xDE000, | |
126 | 0xE0000 | |
127 | }; | |
128 | ||
129 | static DEFINE_SPINLOCK(xd_lock); | |
130 | ||
131 | static struct gendisk *xd_gendisk[2]; | |
132 | ||
a885c8c4 CH |
133 | static int xd_getgeo(struct block_device *bdev, struct hd_geometry *geo); |
134 | ||
83d5cde4 | 135 | static const struct block_device_operations xd_fops = { |
1da177e4 | 136 | .owner = THIS_MODULE, |
8a6cfeb6 | 137 | .ioctl = xd_ioctl, |
a885c8c4 | 138 | .getgeo = xd_getgeo, |
1da177e4 LT |
139 | }; |
140 | static DECLARE_WAIT_QUEUE_HEAD(xd_wait_int); | |
141 | static u_char xd_drives, xd_irq = 5, xd_dma = 3, xd_maxsectors; | |
142 | static u_char xd_override __initdata = 0, xd_type __initdata = 0; | |
143 | static u_short xd_iobase = 0x320; | |
144 | static int xd_geo[XD_MAXDRIVES*3] __initdata = { 0, }; | |
145 | ||
146 | static volatile int xdc_busy; | |
147 | static struct timer_list xd_watchdog_int; | |
148 | ||
149 | static volatile u_char xd_error; | |
90ab5ee9 | 150 | static bool nodma = XD_DONT_USE_DMA; |
1da177e4 LT |
151 | |
152 | static struct request_queue *xd_queue; | |
153 | ||
154 | /* xd_init: register the block device number and set up pointer tables */ | |
155 | static int __init xd_init(void) | |
156 | { | |
157 | u_char i,controller; | |
158 | unsigned int address; | |
159 | int err; | |
160 | ||
161 | #ifdef MODULE | |
162 | { | |
163 | u_char count = 0; | |
164 | for (i = 4; i > 0; i--) | |
165 | if (((xd[i] = xd[i-1]) >= 0) && !count) | |
166 | count = i; | |
167 | if ((xd[0] = count)) | |
168 | do_xd_setup(xd); | |
169 | } | |
170 | #endif | |
171 | ||
172 | init_timer (&xd_watchdog_int); xd_watchdog_int.function = xd_watchdog; | |
173 | ||
1da177e4 LT |
174 | err = -EBUSY; |
175 | if (register_blkdev(XT_DISK_MAJOR, "xd")) | |
176 | goto out1; | |
177 | ||
178 | err = -ENOMEM; | |
179 | xd_queue = blk_init_queue(do_xd_request, &xd_lock); | |
180 | if (!xd_queue) | |
181 | goto out1a; | |
182 | ||
183 | if (xd_detect(&controller,&address)) { | |
184 | ||
185 | printk("Detected a%s controller (type %d) at address %06x\n", | |
186 | xd_sigs[controller].name,controller,address); | |
187 | if (!request_region(xd_iobase,4,"xd")) { | |
188 | printk("xd: Ports at 0x%x are not available\n", | |
189 | xd_iobase); | |
190 | goto out2; | |
191 | } | |
192 | if (controller) | |
193 | xd_sigs[controller].init_controller(address); | |
194 | xd_drives = xd_initdrives(xd_sigs[controller].init_drive); | |
195 | ||
196 | printk("Detected %d hard drive%s (using IRQ%d & DMA%d)\n", | |
197 | xd_drives,xd_drives == 1 ? "" : "s",xd_irq,xd_dma); | |
198 | } | |
199 | ||
a3b8d92d MG |
200 | /* |
201 | * With the drive detected, xd_maxsectors should now be known. | |
202 | * If xd_maxsectors is 0, nothing was detected and we fall through | |
203 | * to return -ENODEV | |
204 | */ | |
205 | if (!xd_dma_buffer && xd_maxsectors) { | |
206 | xd_dma_buffer = (char *)xd_dma_mem_alloc(xd_maxsectors * 0x200); | |
207 | if (!xd_dma_buffer) { | |
208 | printk(KERN_ERR "xd: Out of memory.\n"); | |
209 | goto out3; | |
210 | } | |
211 | } | |
212 | ||
1da177e4 LT |
213 | err = -ENODEV; |
214 | if (!xd_drives) | |
215 | goto out3; | |
216 | ||
217 | for (i = 0; i < xd_drives; i++) { | |
218 | XD_INFO *p = &xd_info[i]; | |
219 | struct gendisk *disk = alloc_disk(64); | |
220 | if (!disk) | |
221 | goto Enomem; | |
222 | p->unit = i; | |
223 | disk->major = XT_DISK_MAJOR; | |
224 | disk->first_minor = i<<6; | |
225 | sprintf(disk->disk_name, "xd%c", i+'a'); | |
1da177e4 LT |
226 | disk->fops = &xd_fops; |
227 | disk->private_data = p; | |
228 | disk->queue = xd_queue; | |
229 | set_capacity(disk, p->heads * p->cylinders * p->sectors); | |
230 | printk(" %s: CHS=%d/%d/%d\n", disk->disk_name, | |
231 | p->cylinders, p->heads, p->sectors); | |
232 | xd_gendisk[i] = disk; | |
233 | } | |
234 | ||
235 | err = -EBUSY; | |
236 | if (request_irq(xd_irq,xd_interrupt_handler, 0, "XT hard disk", NULL)) { | |
237 | printk("xd: unable to get IRQ%d\n",xd_irq); | |
238 | goto out4; | |
239 | } | |
240 | ||
241 | if (request_dma(xd_dma,"xd")) { | |
242 | printk("xd: unable to get DMA%d\n",xd_dma); | |
243 | goto out5; | |
244 | } | |
245 | ||
246 | /* xd_maxsectors depends on controller - so set after detection */ | |
086fa5ff | 247 | blk_queue_max_hw_sectors(xd_queue, xd_maxsectors); |
1da177e4 LT |
248 | |
249 | for (i = 0; i < xd_drives; i++) | |
250 | add_disk(xd_gendisk[i]); | |
251 | ||
252 | return 0; | |
253 | ||
254 | out5: | |
255 | free_irq(xd_irq, NULL); | |
256 | out4: | |
257 | for (i = 0; i < xd_drives; i++) | |
258 | put_disk(xd_gendisk[i]); | |
259 | out3: | |
a3b8d92d MG |
260 | if (xd_maxsectors) |
261 | release_region(xd_iobase,4); | |
262 | ||
263 | if (xd_dma_buffer) | |
264 | xd_dma_mem_free((unsigned long)xd_dma_buffer, | |
265 | xd_maxsectors * 0x200); | |
1da177e4 LT |
266 | out2: |
267 | blk_cleanup_queue(xd_queue); | |
268 | out1a: | |
269 | unregister_blkdev(XT_DISK_MAJOR, "xd"); | |
270 | out1: | |
1da177e4 LT |
271 | return err; |
272 | Enomem: | |
273 | err = -ENOMEM; | |
274 | while (i--) | |
275 | put_disk(xd_gendisk[i]); | |
276 | goto out3; | |
277 | } | |
278 | ||
279 | /* xd_detect: scan the possible BIOS ROM locations for the signature strings */ | |
280 | static u_char __init xd_detect (u_char *controller, unsigned int *address) | |
281 | { | |
282 | int i, j; | |
283 | ||
284 | if (xd_override) | |
285 | { | |
286 | *controller = xd_type; | |
287 | *address = 0; | |
288 | return(1); | |
289 | } | |
290 | ||
945f390f | 291 | for (i = 0; i < ARRAY_SIZE(xd_bases); i++) { |
1da177e4 LT |
292 | void __iomem *p = ioremap(xd_bases[i], 0x2000); |
293 | if (!p) | |
294 | continue; | |
945f390f | 295 | for (j = 1; j < ARRAY_SIZE(xd_sigs); j++) { |
1da177e4 LT |
296 | const char *s = xd_sigs[j].string; |
297 | if (check_signature(p + xd_sigs[j].offset, s, strlen(s))) { | |
298 | *controller = j; | |
299 | xd_type = j; | |
300 | *address = xd_bases[i]; | |
301 | iounmap(p); | |
302 | return 1; | |
303 | } | |
304 | } | |
305 | iounmap(p); | |
306 | } | |
307 | return 0; | |
308 | } | |
309 | ||
310 | /* do_xd_request: handle an incoming request */ | |
165125e1 | 311 | static void do_xd_request (struct request_queue * q) |
1da177e4 LT |
312 | { |
313 | struct request *req; | |
314 | ||
315 | if (xdc_busy) | |
316 | return; | |
317 | ||
9934c8c0 | 318 | req = blk_fetch_request(q); |
bab2a807 | 319 | while (req) { |
83096ebf | 320 | unsigned block = blk_rq_pos(req); |
bab2a807 | 321 | unsigned count = blk_rq_cur_sectors(req); |
1da177e4 | 322 | XD_INFO *disk = req->rq_disk->private_data; |
bab2a807 | 323 | int res = -EIO; |
1da177e4 LT |
324 | int retry; |
325 | ||
511d37af | 326 | if (req->cmd_type != REQ_TYPE_FS) |
bab2a807 TH |
327 | goto done; |
328 | if (block + count > get_capacity(req->rq_disk)) | |
329 | goto done; | |
1da177e4 | 330 | for (retry = 0; (retry < XD_RETRIES) && !res; retry++) |
5b5c5d12 TH |
331 | res = xd_readwrite(rq_data_dir(req), disk, req->buffer, |
332 | block, count); | |
bab2a807 | 333 | done: |
f06d9a2b | 334 | /* wrap up, 0 = success, -errno = fail */ |
9934c8c0 TH |
335 | if (!__blk_end_request_cur(req, res)) |
336 | req = blk_fetch_request(q); | |
1da177e4 LT |
337 | } |
338 | } | |
339 | ||
a885c8c4 CH |
340 | static int xd_getgeo(struct block_device *bdev, struct hd_geometry *geo) |
341 | { | |
342 | XD_INFO *p = bdev->bd_disk->private_data; | |
343 | ||
344 | geo->heads = p->heads; | |
345 | geo->sectors = p->sectors; | |
346 | geo->cylinders = p->cylinders; | |
347 | return 0; | |
348 | } | |
349 | ||
1da177e4 | 350 | /* xd_ioctl: handle device ioctl's */ |
8a6cfeb6 | 351 | static int xd_locked_ioctl(struct block_device *bdev, fmode_t mode, u_int cmd, u_long arg) |
1da177e4 | 352 | { |
1da177e4 | 353 | switch (cmd) { |
1da177e4 LT |
354 | case HDIO_SET_DMA: |
355 | if (!capable(CAP_SYS_ADMIN)) return -EACCES; | |
356 | if (xdc_busy) return -EBUSY; | |
357 | nodma = !arg; | |
358 | if (nodma && xd_dma_buffer) { | |
359 | xd_dma_mem_free((unsigned long)xd_dma_buffer, | |
360 | xd_maxsectors * 0x200); | |
361 | xd_dma_buffer = NULL; | |
362 | } else if (!nodma && !xd_dma_buffer) { | |
363 | xd_dma_buffer = (char *)xd_dma_mem_alloc(xd_maxsectors * 0x200); | |
364 | if (!xd_dma_buffer) { | |
365 | nodma = XD_DONT_USE_DMA; | |
366 | return -ENOMEM; | |
367 | } | |
368 | } | |
369 | return 0; | |
370 | case HDIO_GET_DMA: | |
371 | return put_user(!nodma, (long __user *) arg); | |
372 | case HDIO_GET_MULTCOUNT: | |
373 | return put_user(xd_maxsectors, (long __user *) arg); | |
374 | default: | |
375 | return -EINVAL; | |
376 | } | |
377 | } | |
378 | ||
8a6cfeb6 AB |
379 | static int xd_ioctl(struct block_device *bdev, fmode_t mode, |
380 | unsigned int cmd, unsigned long param) | |
381 | { | |
382 | int ret; | |
383 | ||
2a48fc0a | 384 | mutex_lock(&xd_mutex); |
8a6cfeb6 | 385 | ret = xd_locked_ioctl(bdev, mode, cmd, param); |
2a48fc0a | 386 | mutex_unlock(&xd_mutex); |
8a6cfeb6 AB |
387 | |
388 | return ret; | |
389 | } | |
390 | ||
1da177e4 LT |
391 | /* xd_readwrite: handle a read/write request */ |
392 | static int xd_readwrite (u_char operation,XD_INFO *p,char *buffer,u_int block,u_int count) | |
393 | { | |
394 | int drive = p->unit; | |
395 | u_char cmdblk[6],sense[4]; | |
396 | u_short track,cylinder; | |
397 | u_char head,sector,control,mode = PIO_MODE,temp; | |
398 | char **real_buffer; | |
399 | register int i; | |
400 | ||
401 | #ifdef DEBUG_READWRITE | |
402 | printk("xd_readwrite: operation = %s, drive = %d, buffer = 0x%X, block = %d, count = %d\n",operation == READ ? "read" : "write",drive,buffer,block,count); | |
403 | #endif /* DEBUG_READWRITE */ | |
404 | ||
405 | spin_unlock_irq(&xd_lock); | |
406 | ||
407 | control = p->control; | |
408 | if (!xd_dma_buffer) | |
409 | xd_dma_buffer = (char *)xd_dma_mem_alloc(xd_maxsectors * 0x200); | |
410 | while (count) { | |
411 | temp = count < xd_maxsectors ? count : xd_maxsectors; | |
412 | ||
413 | track = block / p->sectors; | |
414 | head = track % p->heads; | |
415 | cylinder = track / p->heads; | |
416 | sector = block % p->sectors; | |
417 | ||
418 | #ifdef DEBUG_READWRITE | |
419 | printk("xd_readwrite: drive = %d, head = %d, cylinder = %d, sector = %d, count = %d\n",drive,head,cylinder,sector,temp); | |
420 | #endif /* DEBUG_READWRITE */ | |
421 | ||
422 | if (xd_dma_buffer) { | |
423 | mode = xd_setup_dma(operation == READ ? DMA_MODE_READ : DMA_MODE_WRITE,(u_char *)(xd_dma_buffer),temp * 0x200); | |
424 | real_buffer = &xd_dma_buffer; | |
425 | for (i=0; i < (temp * 0x200); i++) | |
426 | xd_dma_buffer[i] = buffer[i]; | |
427 | } | |
428 | else | |
429 | real_buffer = &buffer; | |
430 | ||
431 | xd_build(cmdblk,operation == READ ? CMD_READ : CMD_WRITE,drive,head,cylinder,sector,temp & 0xFF,control); | |
432 | ||
433 | switch (xd_command(cmdblk,mode,(u_char *)(*real_buffer),(u_char *)(*real_buffer),sense,XD_TIMEOUT)) { | |
434 | case 1: | |
435 | printk("xd%c: %s timeout, recalibrating drive\n",'a'+drive,(operation == READ ? "read" : "write")); | |
436 | xd_recalibrate(drive); | |
437 | spin_lock_irq(&xd_lock); | |
f06d9a2b | 438 | return -EIO; |
1da177e4 LT |
439 | case 2: |
440 | if (sense[0] & 0x30) { | |
441 | printk("xd%c: %s - ",'a'+drive,(operation == READ ? "reading" : "writing")); | |
442 | switch ((sense[0] & 0x30) >> 4) { | |
443 | case 0: printk("drive error, code = 0x%X",sense[0] & 0x0F); | |
444 | break; | |
445 | case 1: printk("controller error, code = 0x%X",sense[0] & 0x0F); | |
446 | break; | |
447 | case 2: printk("command error, code = 0x%X",sense[0] & 0x0F); | |
448 | break; | |
449 | case 3: printk("miscellaneous error, code = 0x%X",sense[0] & 0x0F); | |
450 | break; | |
451 | } | |
452 | } | |
453 | if (sense[0] & 0x80) | |
454 | printk(" - CHS = %d/%d/%d\n",((sense[2] & 0xC0) << 2) | sense[3],sense[1] & 0x1F,sense[2] & 0x3F); | |
455 | /* reported drive number = (sense[1] & 0xE0) >> 5 */ | |
456 | else | |
457 | printk(" - no valid disk address\n"); | |
458 | spin_lock_irq(&xd_lock); | |
f06d9a2b | 459 | return -EIO; |
1da177e4 LT |
460 | } |
461 | if (xd_dma_buffer) | |
462 | for (i=0; i < (temp * 0x200); i++) | |
463 | buffer[i] = xd_dma_buffer[i]; | |
464 | ||
465 | count -= temp, buffer += temp * 0x200, block += temp; | |
466 | } | |
467 | spin_lock_irq(&xd_lock); | |
f06d9a2b | 468 | return 0; |
1da177e4 LT |
469 | } |
470 | ||
471 | /* xd_recalibrate: recalibrate a given drive and reset controller if necessary */ | |
472 | static void xd_recalibrate (u_char drive) | |
473 | { | |
474 | u_char cmdblk[6]; | |
475 | ||
476 | xd_build(cmdblk,CMD_RECALIBRATE,drive,0,0,0,0,0); | |
477 | if (xd_command(cmdblk,PIO_MODE,NULL,NULL,NULL,XD_TIMEOUT * 8)) | |
478 | printk("xd%c: warning! error recalibrating, controller may be unstable\n", 'a'+drive); | |
479 | } | |
480 | ||
481 | /* xd_interrupt_handler: interrupt service routine */ | |
7d12e780 | 482 | static irqreturn_t xd_interrupt_handler(int irq, void *dev_id) |
1da177e4 LT |
483 | { |
484 | if (inb(XD_STATUS) & STAT_INTERRUPT) { /* check if it was our device */ | |
485 | #ifdef DEBUG_OTHER | |
486 | printk("xd_interrupt_handler: interrupt detected\n"); | |
487 | #endif /* DEBUG_OTHER */ | |
488 | outb(0,XD_CONTROL); /* acknowledge interrupt */ | |
489 | wake_up(&xd_wait_int); /* and wake up sleeping processes */ | |
490 | return IRQ_HANDLED; | |
491 | } | |
492 | else | |
493 | printk("xd: unexpected interrupt\n"); | |
494 | return IRQ_NONE; | |
495 | } | |
496 | ||
497 | /* xd_setup_dma: set up the DMA controller for a data transfer */ | |
498 | static u_char xd_setup_dma (u_char mode,u_char *buffer,u_int count) | |
499 | { | |
500 | unsigned long f; | |
501 | ||
502 | if (nodma) | |
503 | return (PIO_MODE); | |
504 | if (((unsigned long) buffer & 0xFFFF0000) != (((unsigned long) buffer + count) & 0xFFFF0000)) { | |
505 | #ifdef DEBUG_OTHER | |
506 | printk("xd_setup_dma: using PIO, transfer overlaps 64k boundary\n"); | |
507 | #endif /* DEBUG_OTHER */ | |
508 | return (PIO_MODE); | |
509 | } | |
510 | ||
511 | f=claim_dma_lock(); | |
512 | disable_dma(xd_dma); | |
513 | clear_dma_ff(xd_dma); | |
514 | set_dma_mode(xd_dma,mode); | |
515 | set_dma_addr(xd_dma, (unsigned long) buffer); | |
516 | set_dma_count(xd_dma,count); | |
517 | ||
518 | release_dma_lock(f); | |
519 | ||
520 | return (DMA_MODE); /* use DMA and INT */ | |
521 | } | |
522 | ||
523 | /* xd_build: put stuff into an array in a format suitable for the controller */ | |
524 | 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) | |
525 | { | |
526 | cmdblk[0] = command; | |
527 | cmdblk[1] = ((drive & 0x07) << 5) | (head & 0x1F); | |
528 | cmdblk[2] = ((cylinder & 0x300) >> 2) | (sector & 0x3F); | |
529 | cmdblk[3] = cylinder & 0xFF; | |
530 | cmdblk[4] = count; | |
531 | cmdblk[5] = control; | |
532 | ||
533 | return (cmdblk); | |
534 | } | |
535 | ||
536 | static void xd_watchdog (unsigned long unused) | |
537 | { | |
538 | xd_error = 1; | |
539 | wake_up(&xd_wait_int); | |
540 | } | |
541 | ||
542 | /* xd_waitport: waits until port & mask == flags or a timeout occurs. return 1 for a timeout */ | |
543 | static inline u_char xd_waitport (u_short port,u_char flags,u_char mask,u_long timeout) | |
544 | { | |
545 | u_long expiry = jiffies + timeout; | |
546 | int success; | |
547 | ||
548 | xdc_busy = 1; | |
86e84862 NA |
549 | while ((success = ((inb(port) & mask) != flags)) && time_before(jiffies, expiry)) |
550 | schedule_timeout_uninterruptible(1); | |
1da177e4 LT |
551 | xdc_busy = 0; |
552 | return (success); | |
553 | } | |
554 | ||
555 | static inline u_int xd_wait_for_IRQ (void) | |
556 | { | |
557 | unsigned long flags; | |
558 | xd_watchdog_int.expires = jiffies + 8 * HZ; | |
559 | add_timer(&xd_watchdog_int); | |
560 | ||
561 | flags=claim_dma_lock(); | |
562 | enable_dma(xd_dma); | |
563 | release_dma_lock(flags); | |
564 | ||
565 | sleep_on(&xd_wait_int); | |
566 | del_timer(&xd_watchdog_int); | |
567 | xdc_busy = 0; | |
568 | ||
569 | flags=claim_dma_lock(); | |
570 | disable_dma(xd_dma); | |
571 | release_dma_lock(flags); | |
572 | ||
573 | if (xd_error) { | |
574 | printk("xd: missed IRQ - command aborted\n"); | |
575 | xd_error = 0; | |
576 | return (1); | |
577 | } | |
578 | return (0); | |
579 | } | |
580 | ||
581 | /* xd_command: handle all data transfers necessary for a single command */ | |
582 | static u_int xd_command (u_char *command,u_char mode,u_char *indata,u_char *outdata,u_char *sense,u_long timeout) | |
583 | { | |
584 | u_char cmdblk[6],csb,complete = 0; | |
585 | ||
586 | #ifdef DEBUG_COMMAND | |
587 | printk("xd_command: command = 0x%X, mode = 0x%X, indata = 0x%X, outdata = 0x%X, sense = 0x%X\n",command,mode,indata,outdata,sense); | |
588 | #endif /* DEBUG_COMMAND */ | |
589 | ||
590 | outb(0,XD_SELECT); | |
591 | outb(mode,XD_CONTROL); | |
592 | ||
593 | if (xd_waitport(XD_STATUS,STAT_SELECT,STAT_SELECT,timeout)) | |
594 | return (1); | |
595 | ||
596 | while (!complete) { | |
597 | if (xd_waitport(XD_STATUS,STAT_READY,STAT_READY,timeout)) | |
598 | return (1); | |
599 | ||
600 | switch (inb(XD_STATUS) & (STAT_COMMAND | STAT_INPUT)) { | |
601 | case 0: | |
602 | if (mode == DMA_MODE) { | |
603 | if (xd_wait_for_IRQ()) | |
604 | return (1); | |
605 | } else | |
606 | outb(outdata ? *outdata++ : 0,XD_DATA); | |
607 | break; | |
608 | case STAT_INPUT: | |
609 | if (mode == DMA_MODE) { | |
610 | if (xd_wait_for_IRQ()) | |
611 | return (1); | |
612 | } else | |
613 | if (indata) | |
614 | *indata++ = inb(XD_DATA); | |
615 | else | |
616 | inb(XD_DATA); | |
617 | break; | |
618 | case STAT_COMMAND: | |
619 | outb(command ? *command++ : 0,XD_DATA); | |
620 | break; | |
621 | case STAT_COMMAND | STAT_INPUT: | |
622 | complete = 1; | |
623 | break; | |
624 | } | |
625 | } | |
626 | csb = inb(XD_DATA); | |
627 | ||
628 | if (xd_waitport(XD_STATUS,0,STAT_SELECT,timeout)) /* wait until deselected */ | |
629 | return (1); | |
630 | ||
631 | if (csb & CSB_ERROR) { /* read sense data if error */ | |
632 | xd_build(cmdblk,CMD_SENSE,(csb & CSB_LUN) >> 5,0,0,0,0,0); | |
633 | if (xd_command(cmdblk,0,sense,NULL,NULL,XD_TIMEOUT)) | |
634 | printk("xd: warning! sense command failed!\n"); | |
635 | } | |
636 | ||
637 | #ifdef DEBUG_COMMAND | |
638 | printk("xd_command: completed with csb = 0x%X\n",csb); | |
639 | #endif /* DEBUG_COMMAND */ | |
640 | ||
641 | return (csb & CSB_ERROR); | |
642 | } | |
643 | ||
644 | static u_char __init xd_initdrives (void (*init_drive)(u_char drive)) | |
645 | { | |
646 | u_char cmdblk[6],i,count = 0; | |
647 | ||
648 | for (i = 0; i < XD_MAXDRIVES; i++) { | |
649 | xd_build(cmdblk,CMD_TESTREADY,i,0,0,0,0,0); | |
650 | if (!xd_command(cmdblk,PIO_MODE,NULL,NULL,NULL,XD_TIMEOUT*8)) { | |
f6a2f340 | 651 | msleep_interruptible(XD_INIT_DISK_DELAY); |
1da177e4 LT |
652 | |
653 | init_drive(count); | |
654 | count++; | |
655 | ||
f6a2f340 | 656 | msleep_interruptible(XD_INIT_DISK_DELAY); |
1da177e4 LT |
657 | } |
658 | } | |
659 | return (count); | |
660 | } | |
661 | ||
662 | static void __init xd_manual_geo_set (u_char drive) | |
663 | { | |
664 | xd_info[drive].heads = (u_char)(xd_geo[3 * drive + 1]); | |
665 | xd_info[drive].cylinders = (u_short)(xd_geo[3 * drive]); | |
666 | xd_info[drive].sectors = (u_char)(xd_geo[3 * drive + 2]); | |
667 | } | |
668 | ||
669 | static void __init xd_dtc_init_controller (unsigned int address) | |
670 | { | |
671 | switch (address) { | |
672 | case 0x00000: | |
673 | case 0xC8000: break; /*initial: 0x320 */ | |
674 | case 0xCA000: xd_iobase = 0x324; | |
675 | case 0xD0000: /*5150CX*/ | |
676 | case 0xD8000: break; /*5150CX & 5150XL*/ | |
677 | default: printk("xd_dtc_init_controller: unsupported BIOS address %06x\n",address); | |
678 | break; | |
679 | } | |
680 | xd_maxsectors = 0x01; /* my card seems to have trouble doing multi-block transfers? */ | |
681 | ||
682 | outb(0,XD_RESET); /* reset the controller */ | |
683 | } | |
684 | ||
685 | ||
686 | static void __init xd_dtc5150cx_init_drive (u_char drive) | |
687 | { | |
688 | /* values from controller's BIOS - BIOS chip may be removed */ | |
689 | static u_short geometry_table[][4] = { | |
690 | {0x200,8,0x200,0x100}, | |
691 | {0x267,2,0x267,0x267}, | |
692 | {0x264,4,0x264,0x80}, | |
693 | {0x132,4,0x132,0x0}, | |
694 | {0x132,2,0x80, 0x132}, | |
695 | {0x177,8,0x177,0x0}, | |
696 | {0x132,8,0x84, 0x0}, | |
697 | {}, /* not used */ | |
698 | {0x132,6,0x80, 0x100}, | |
699 | {0x200,6,0x100,0x100}, | |
700 | {0x264,2,0x264,0x80}, | |
701 | {0x280,4,0x280,0x100}, | |
702 | {0x2B9,3,0x2B9,0x2B9}, | |
703 | {0x2B9,5,0x2B9,0x2B9}, | |
704 | {0x280,6,0x280,0x100}, | |
705 | {0x132,4,0x132,0x0}}; | |
706 | u_char n; | |
707 | ||
708 | n = inb(XD_JUMPER); | |
709 | n = (drive ? n : (n >> 2)) & 0x33; | |
710 | n = (n | (n >> 2)) & 0x0F; | |
711 | if (xd_geo[3*drive]) | |
712 | xd_manual_geo_set(drive); | |
713 | else | |
714 | if (n != 7) { | |
715 | xd_info[drive].heads = (u_char)(geometry_table[n][1]); /* heads */ | |
716 | xd_info[drive].cylinders = geometry_table[n][0]; /* cylinders */ | |
717 | xd_info[drive].sectors = 17; /* sectors */ | |
718 | #if 0 | |
719 | xd_info[drive].rwrite = geometry_table[n][2]; /* reduced write */ | |
720 | xd_info[drive].precomp = geometry_table[n][3] /* write precomp */ | |
721 | xd_info[drive].ecc = 0x0B; /* ecc length */ | |
722 | #endif /* 0 */ | |
723 | } | |
724 | else { | |
725 | printk("xd%c: undetermined drive geometry\n",'a'+drive); | |
726 | return; | |
727 | } | |
728 | xd_info[drive].control = 5; /* control byte */ | |
729 | xd_setparam(CMD_DTCSETPARAM,drive,xd_info[drive].heads,xd_info[drive].cylinders,geometry_table[n][2],geometry_table[n][3],0x0B); | |
730 | xd_recalibrate(drive); | |
731 | } | |
732 | ||
733 | static void __init xd_dtc_init_drive (u_char drive) | |
734 | { | |
735 | u_char cmdblk[6],buf[64]; | |
736 | ||
737 | xd_build(cmdblk,CMD_DTCGETGEOM,drive,0,0,0,0,0); | |
738 | if (!xd_command(cmdblk,PIO_MODE,buf,NULL,NULL,XD_TIMEOUT * 2)) { | |
739 | xd_info[drive].heads = buf[0x0A]; /* heads */ | |
740 | xd_info[drive].cylinders = ((u_short *) (buf))[0x04]; /* cylinders */ | |
741 | xd_info[drive].sectors = 17; /* sectors */ | |
742 | if (xd_geo[3*drive]) | |
743 | xd_manual_geo_set(drive); | |
744 | #if 0 | |
745 | xd_info[drive].rwrite = ((u_short *) (buf + 1))[0x05]; /* reduced write */ | |
746 | xd_info[drive].precomp = ((u_short *) (buf + 1))[0x06]; /* write precomp */ | |
747 | xd_info[drive].ecc = buf[0x0F]; /* ecc length */ | |
748 | #endif /* 0 */ | |
749 | xd_info[drive].control = 0; /* control byte */ | |
750 | ||
751 | 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]); | |
752 | xd_build(cmdblk,CMD_DTCSETSTEP,drive,0,0,0,0,7); | |
753 | if (xd_command(cmdblk,PIO_MODE,NULL,NULL,NULL,XD_TIMEOUT * 2)) | |
754 | printk("xd_dtc_init_drive: error setting step rate for xd%c\n", 'a'+drive); | |
755 | } | |
756 | else | |
757 | printk("xd_dtc_init_drive: error reading geometry for xd%c\n", 'a'+drive); | |
758 | } | |
759 | ||
760 | static void __init xd_wd_init_controller (unsigned int address) | |
761 | { | |
762 | switch (address) { | |
763 | case 0x00000: | |
764 | case 0xC8000: break; /*initial: 0x320 */ | |
765 | case 0xCA000: xd_iobase = 0x324; break; | |
766 | case 0xCC000: xd_iobase = 0x328; break; | |
767 | case 0xCE000: xd_iobase = 0x32C; break; | |
768 | case 0xD0000: xd_iobase = 0x328; break; /* ? */ | |
769 | case 0xD8000: xd_iobase = 0x32C; break; /* ? */ | |
770 | default: printk("xd_wd_init_controller: unsupported BIOS address %06x\n",address); | |
771 | break; | |
772 | } | |
773 | xd_maxsectors = 0x01; /* this one doesn't wrap properly either... */ | |
774 | ||
775 | outb(0,XD_RESET); /* reset the controller */ | |
776 | ||
f6a2f340 | 777 | msleep(XD_INIT_DISK_DELAY); |
1da177e4 LT |
778 | } |
779 | ||
780 | static void __init xd_wd_init_drive (u_char drive) | |
781 | { | |
782 | /* values from controller's BIOS - BIOS may be disabled */ | |
783 | static u_short geometry_table[][4] = { | |
784 | {0x264,4,0x1C2,0x1C2}, /* common part */ | |
785 | {0x132,4,0x099,0x0}, | |
786 | {0x267,2,0x1C2,0x1C2}, | |
787 | {0x267,4,0x1C2,0x1C2}, | |
788 | ||
789 | {0x334,6,0x335,0x335}, /* 1004 series RLL */ | |
790 | {0x30E,4,0x30F,0x3DC}, | |
791 | {0x30E,2,0x30F,0x30F}, | |
792 | {0x267,4,0x268,0x268}, | |
793 | ||
794 | {0x3D5,5,0x3D6,0x3D6}, /* 1002 series RLL */ | |
795 | {0x3DB,7,0x3DC,0x3DC}, | |
796 | {0x264,4,0x265,0x265}, | |
797 | {0x267,4,0x268,0x268}}; | |
798 | ||
799 | u_char cmdblk[6],buf[0x200]; | |
800 | u_char n = 0,rll,jumper_state,use_jumper_geo; | |
801 | u_char wd_1002 = (xd_sigs[xd_type].string[7] == '6'); | |
802 | ||
803 | jumper_state = ~(inb(0x322)); | |
804 | if (jumper_state & 0x40) | |
805 | xd_irq = 9; | |
806 | rll = (jumper_state & 0x30) ? (0x04 << wd_1002) : 0; | |
807 | xd_build(cmdblk,CMD_READ,drive,0,0,0,1,0); | |
808 | if (!xd_command(cmdblk,PIO_MODE,buf,NULL,NULL,XD_TIMEOUT * 2)) { | |
809 | xd_info[drive].heads = buf[0x1AF]; /* heads */ | |
810 | xd_info[drive].cylinders = ((u_short *) (buf + 1))[0xD6]; /* cylinders */ | |
811 | xd_info[drive].sectors = 17; /* sectors */ | |
812 | if (xd_geo[3*drive]) | |
813 | xd_manual_geo_set(drive); | |
814 | #if 0 | |
815 | xd_info[drive].rwrite = ((u_short *) (buf))[0xD8]; /* reduced write */ | |
816 | xd_info[drive].wprecomp = ((u_short *) (buf))[0xDA]; /* write precomp */ | |
817 | xd_info[drive].ecc = buf[0x1B4]; /* ecc length */ | |
818 | #endif /* 0 */ | |
819 | xd_info[drive].control = buf[0x1B5]; /* control byte */ | |
820 | use_jumper_geo = !(xd_info[drive].heads) || !(xd_info[drive].cylinders); | |
821 | if (xd_geo[3*drive]) { | |
822 | xd_manual_geo_set(drive); | |
823 | xd_info[drive].control = rll ? 7 : 5; | |
824 | } | |
825 | else if (use_jumper_geo) { | |
826 | n = (((jumper_state & 0x0F) >> (drive << 1)) & 0x03) | rll; | |
827 | xd_info[drive].cylinders = geometry_table[n][0]; | |
828 | xd_info[drive].heads = (u_char)(geometry_table[n][1]); | |
829 | xd_info[drive].control = rll ? 7 : 5; | |
830 | #if 0 | |
831 | xd_info[drive].rwrite = geometry_table[n][2]; | |
832 | xd_info[drive].wprecomp = geometry_table[n][3]; | |
833 | xd_info[drive].ecc = 0x0B; | |
834 | #endif /* 0 */ | |
835 | } | |
836 | if (!wd_1002) { | |
837 | if (use_jumper_geo) | |
838 | xd_setparam(CMD_WDSETPARAM,drive,xd_info[drive].heads,xd_info[drive].cylinders, | |
839 | geometry_table[n][2],geometry_table[n][3],0x0B); | |
840 | else | |
841 | xd_setparam(CMD_WDSETPARAM,drive,xd_info[drive].heads,xd_info[drive].cylinders, | |
842 | ((u_short *) (buf))[0xD8],((u_short *) (buf))[0xDA],buf[0x1B4]); | |
843 | } | |
844 | /* 1002 based RLL controller requests converted addressing, but reports physical | |
845 | (physical 26 sec., logical 17 sec.) | |
846 | 1004 based ???? */ | |
847 | if (rll & wd_1002) { | |
848 | if ((xd_info[drive].cylinders *= 26, | |
849 | xd_info[drive].cylinders /= 17) > 1023) | |
850 | xd_info[drive].cylinders = 1023; /* 1024 ? */ | |
851 | #if 0 | |
852 | xd_info[drive].rwrite *= 26; | |
853 | xd_info[drive].rwrite /= 17; | |
854 | xd_info[drive].wprecomp *= 26 | |
855 | xd_info[drive].wprecomp /= 17; | |
856 | #endif /* 0 */ | |
857 | } | |
858 | } | |
859 | else | |
860 | printk("xd_wd_init_drive: error reading geometry for xd%c\n",'a'+drive); | |
861 | ||
862 | } | |
863 | ||
864 | static void __init xd_seagate_init_controller (unsigned int address) | |
865 | { | |
866 | switch (address) { | |
867 | case 0x00000: | |
868 | case 0xC8000: break; /*initial: 0x320 */ | |
869 | case 0xD0000: xd_iobase = 0x324; break; | |
870 | case 0xD8000: xd_iobase = 0x328; break; | |
871 | case 0xE0000: xd_iobase = 0x32C; break; | |
872 | default: printk("xd_seagate_init_controller: unsupported BIOS address %06x\n",address); | |
873 | break; | |
874 | } | |
875 | xd_maxsectors = 0x40; | |
876 | ||
877 | outb(0,XD_RESET); /* reset the controller */ | |
878 | } | |
879 | ||
880 | static void __init xd_seagate_init_drive (u_char drive) | |
881 | { | |
882 | u_char cmdblk[6],buf[0x200]; | |
883 | ||
884 | xd_build(cmdblk,CMD_ST11GETGEOM,drive,0,0,0,1,0); | |
885 | if (!xd_command(cmdblk,PIO_MODE,buf,NULL,NULL,XD_TIMEOUT * 2)) { | |
886 | xd_info[drive].heads = buf[0x04]; /* heads */ | |
887 | xd_info[drive].cylinders = (buf[0x02] << 8) | buf[0x03]; /* cylinders */ | |
888 | xd_info[drive].sectors = buf[0x05]; /* sectors */ | |
889 | xd_info[drive].control = 0; /* control byte */ | |
890 | } | |
891 | else | |
892 | printk("xd_seagate_init_drive: error reading geometry from xd%c\n", 'a'+drive); | |
893 | } | |
894 | ||
895 | /* Omti support courtesy Dirk Melchers */ | |
896 | static void __init xd_omti_init_controller (unsigned int address) | |
897 | { | |
898 | switch (address) { | |
899 | case 0x00000: | |
900 | case 0xC8000: break; /*initial: 0x320 */ | |
901 | case 0xD0000: xd_iobase = 0x324; break; | |
902 | case 0xD8000: xd_iobase = 0x328; break; | |
903 | case 0xE0000: xd_iobase = 0x32C; break; | |
904 | default: printk("xd_omti_init_controller: unsupported BIOS address %06x\n",address); | |
905 | break; | |
906 | } | |
907 | ||
908 | xd_maxsectors = 0x40; | |
909 | ||
910 | outb(0,XD_RESET); /* reset the controller */ | |
911 | } | |
912 | ||
913 | static void __init xd_omti_init_drive (u_char drive) | |
914 | { | |
915 | /* gets infos from drive */ | |
916 | xd_override_init_drive(drive); | |
917 | ||
918 | /* set other parameters, Hardcoded, not that nice :-) */ | |
919 | xd_info[drive].control = 2; | |
920 | } | |
921 | ||
922 | /* Xebec support (AK) */ | |
923 | static void __init xd_xebec_init_controller (unsigned int address) | |
924 | { | |
925 | /* iobase may be set manually in range 0x300 - 0x33C | |
926 | irq may be set manually to 2(9),3,4,5,6,7 | |
927 | dma may be set manually to 1,2,3 | |
928 | (How to detect them ???) | |
929 | BIOS address may be set manually in range 0x0 - 0xF8000 | |
930 | If you need non-standard settings use the xd=... command */ | |
931 | ||
932 | switch (address) { | |
933 | case 0x00000: | |
934 | case 0xC8000: /* initially: xd_iobase==0x320 */ | |
935 | case 0xD0000: | |
936 | case 0xD2000: | |
937 | case 0xD4000: | |
938 | case 0xD6000: | |
939 | case 0xD8000: | |
940 | case 0xDA000: | |
941 | case 0xDC000: | |
942 | case 0xDE000: | |
943 | case 0xE0000: break; | |
944 | default: printk("xd_xebec_init_controller: unsupported BIOS address %06x\n",address); | |
945 | break; | |
946 | } | |
947 | ||
948 | xd_maxsectors = 0x01; | |
949 | outb(0,XD_RESET); /* reset the controller */ | |
950 | ||
f6a2f340 | 951 | msleep(XD_INIT_DISK_DELAY); |
1da177e4 LT |
952 | } |
953 | ||
954 | static void __init xd_xebec_init_drive (u_char drive) | |
955 | { | |
956 | /* values from controller's BIOS - BIOS chip may be removed */ | |
957 | static u_short geometry_table[][5] = { | |
958 | {0x132,4,0x080,0x080,0x7}, | |
959 | {0x132,4,0x080,0x080,0x17}, | |
960 | {0x264,2,0x100,0x100,0x7}, | |
961 | {0x264,2,0x100,0x100,0x17}, | |
962 | {0x132,8,0x080,0x080,0x7}, | |
963 | {0x132,8,0x080,0x080,0x17}, | |
964 | {0x264,4,0x100,0x100,0x6}, | |
965 | {0x264,4,0x100,0x100,0x17}, | |
966 | {0x2BC,5,0x2BC,0x12C,0x6}, | |
967 | {0x3A5,4,0x3A5,0x3A5,0x7}, | |
968 | {0x26C,6,0x26C,0x26C,0x7}, | |
969 | {0x200,8,0x200,0x100,0x17}, | |
970 | {0x400,5,0x400,0x400,0x7}, | |
971 | {0x400,6,0x400,0x400,0x7}, | |
972 | {0x264,8,0x264,0x200,0x17}, | |
973 | {0x33E,7,0x33E,0x200,0x7}}; | |
974 | u_char n; | |
975 | ||
976 | n = inb(XD_JUMPER) & 0x0F; /* BIOS's drive number: same geometry | |
977 | is assumed for BOTH drives */ | |
978 | if (xd_geo[3*drive]) | |
979 | xd_manual_geo_set(drive); | |
980 | else { | |
981 | xd_info[drive].heads = (u_char)(geometry_table[n][1]); /* heads */ | |
982 | xd_info[drive].cylinders = geometry_table[n][0]; /* cylinders */ | |
983 | xd_info[drive].sectors = 17; /* sectors */ | |
984 | #if 0 | |
985 | xd_info[drive].rwrite = geometry_table[n][2]; /* reduced write */ | |
986 | xd_info[drive].precomp = geometry_table[n][3] /* write precomp */ | |
987 | xd_info[drive].ecc = 0x0B; /* ecc length */ | |
988 | #endif /* 0 */ | |
989 | } | |
990 | xd_info[drive].control = geometry_table[n][4]; /* control byte */ | |
991 | xd_setparam(CMD_XBSETPARAM,drive,xd_info[drive].heads,xd_info[drive].cylinders,geometry_table[n][2],geometry_table[n][3],0x0B); | |
992 | xd_recalibrate(drive); | |
993 | } | |
994 | ||
995 | /* xd_override_init_drive: this finds disk geometry in a "binary search" style, narrowing in on the "correct" number of heads | |
996 | etc. by trying values until it gets the highest successful value. Idea courtesy Salvador Abreu (spa@fct.unl.pt). */ | |
997 | static void __init xd_override_init_drive (u_char drive) | |
998 | { | |
999 | u_short min[] = { 0,0,0 },max[] = { 16,1024,64 },test[] = { 0,0,0 }; | |
1000 | u_char cmdblk[6],i; | |
1001 | ||
1002 | if (xd_geo[3*drive]) | |
1003 | xd_manual_geo_set(drive); | |
1004 | else { | |
1005 | for (i = 0; i < 3; i++) { | |
1006 | while (min[i] != max[i] - 1) { | |
1007 | test[i] = (min[i] + max[i]) / 2; | |
1008 | xd_build(cmdblk,CMD_SEEK,drive,(u_char) test[0],(u_short) test[1],(u_char) test[2],0,0); | |
1009 | if (!xd_command(cmdblk,PIO_MODE,NULL,NULL,NULL,XD_TIMEOUT * 2)) | |
1010 | min[i] = test[i]; | |
1011 | else | |
1012 | max[i] = test[i]; | |
1013 | } | |
1014 | test[i] = min[i]; | |
1015 | } | |
1016 | xd_info[drive].heads = (u_char) min[0] + 1; | |
1017 | xd_info[drive].cylinders = (u_short) min[1] + 1; | |
1018 | xd_info[drive].sectors = (u_char) min[2] + 1; | |
1019 | } | |
1020 | xd_info[drive].control = 0; | |
1021 | } | |
1022 | ||
1023 | /* xd_setup: initialise controller from command line parameters */ | |
1024 | static void __init do_xd_setup (int *integers) | |
1025 | { | |
1026 | switch (integers[0]) { | |
1027 | case 4: if (integers[4] < 0) | |
1028 | nodma = 1; | |
1029 | else if (integers[4] < 8) | |
1030 | xd_dma = integers[4]; | |
1031 | case 3: if ((integers[3] > 0) && (integers[3] <= 0x3FC)) | |
1032 | xd_iobase = integers[3]; | |
1033 | case 2: if ((integers[2] > 0) && (integers[2] < 16)) | |
1034 | xd_irq = integers[2]; | |
1035 | case 1: xd_override = 1; | |
945f390f | 1036 | if ((integers[1] >= 0) && (integers[1] < ARRAY_SIZE(xd_sigs))) |
1da177e4 LT |
1037 | xd_type = integers[1]; |
1038 | case 0: break; | |
1039 | default:printk("xd: too many parameters for xd\n"); | |
1040 | } | |
1041 | xd_maxsectors = 0x01; | |
1042 | } | |
1043 | ||
1044 | /* xd_setparam: set the drive characteristics */ | |
1045 | 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) | |
1046 | { | |
1047 | u_char cmdblk[14]; | |
1048 | ||
1049 | xd_build(cmdblk,command,drive,0,0,0,0,0); | |
1050 | cmdblk[6] = (u_char) (cylinders >> 8) & 0x03; | |
1051 | cmdblk[7] = (u_char) (cylinders & 0xFF); | |
1052 | cmdblk[8] = heads & 0x1F; | |
1053 | cmdblk[9] = (u_char) (rwrite >> 8) & 0x03; | |
1054 | cmdblk[10] = (u_char) (rwrite & 0xFF); | |
1055 | cmdblk[11] = (u_char) (wprecomp >> 8) & 0x03; | |
1056 | cmdblk[12] = (u_char) (wprecomp & 0xFF); | |
1057 | cmdblk[13] = ecc; | |
1058 | ||
1059 | /* Some controllers require geometry info as data, not command */ | |
1060 | ||
1061 | if (xd_command(cmdblk,PIO_MODE,NULL,&cmdblk[6],NULL,XD_TIMEOUT * 2)) | |
1062 | printk("xd: error setting characteristics for xd%c\n", 'a'+drive); | |
1063 | } | |
1064 | ||
1065 | ||
1066 | #ifdef MODULE | |
1067 | ||
1068 | module_param_array(xd, int, NULL, 0); | |
1069 | module_param_array(xd_geo, int, NULL, 0); | |
1070 | module_param(nodma, bool, 0); | |
1071 | ||
1072 | MODULE_LICENSE("GPL"); | |
1073 | ||
1074 | void cleanup_module(void) | |
1075 | { | |
1076 | int i; | |
1077 | unregister_blkdev(XT_DISK_MAJOR, "xd"); | |
1078 | for (i = 0; i < xd_drives; i++) { | |
1079 | del_gendisk(xd_gendisk[i]); | |
1080 | put_disk(xd_gendisk[i]); | |
1081 | } | |
1082 | blk_cleanup_queue(xd_queue); | |
1083 | release_region(xd_iobase,4); | |
1084 | if (xd_drives) { | |
1085 | free_irq(xd_irq, NULL); | |
1086 | free_dma(xd_dma); | |
1087 | if (xd_dma_buffer) | |
1088 | xd_dma_mem_free((unsigned long)xd_dma_buffer, xd_maxsectors * 0x200); | |
1089 | } | |
1090 | } | |
1091 | #else | |
1092 | ||
1093 | static int __init xd_setup (char *str) | |
1094 | { | |
1095 | int ints[5]; | |
1096 | get_options (str, ARRAY_SIZE (ints), ints); | |
1097 | do_xd_setup (ints); | |
1098 | return 1; | |
1099 | } | |
1100 | ||
1101 | /* xd_manual_geo_init: initialise drive geometry from command line parameters | |
1102 | (used only for WD drives) */ | |
1103 | static int __init xd_manual_geo_init (char *str) | |
1104 | { | |
1105 | int i, integers[1 + 3*XD_MAXDRIVES]; | |
1106 | ||
1107 | get_options (str, ARRAY_SIZE (integers), integers); | |
1108 | if (integers[0]%3 != 0) { | |
1109 | printk("xd: incorrect number of parameters for xd_geo\n"); | |
1110 | return 1; | |
1111 | } | |
1112 | for (i = 0; (i < integers[0]) && (i < 3*XD_MAXDRIVES); i++) | |
1113 | xd_geo[i] = integers[i+1]; | |
1114 | return 1; | |
1115 | } | |
1116 | ||
1117 | __setup ("xd=", xd_setup); | |
1118 | __setup ("xd_geo=", xd_manual_geo_init); | |
1119 | ||
1120 | #endif /* MODULE */ | |
1121 | ||
1122 | module_init(xd_init); | |
1123 | MODULE_ALIAS_BLOCKDEV_MAJOR(XT_DISK_MAJOR); |