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