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Commit | Line | Data |
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1da177e4 | 1 | /* |
1da177e4 LT |
2 | * Copyright (C) 2000-2002 Andre Hedrick <andre@linux-ide.org> |
3 | * Copyright (C) 2003 Red Hat <alan@redhat.com> | |
4 | * | |
5 | */ | |
6 | ||
1da177e4 LT |
7 | #include <linux/module.h> |
8 | #include <linux/types.h> | |
9 | #include <linux/string.h> | |
10 | #include <linux/kernel.h> | |
11 | #include <linux/timer.h> | |
12 | #include <linux/mm.h> | |
13 | #include <linux/interrupt.h> | |
14 | #include <linux/major.h> | |
15 | #include <linux/errno.h> | |
16 | #include <linux/genhd.h> | |
17 | #include <linux/blkpg.h> | |
18 | #include <linux/slab.h> | |
19 | #include <linux/pci.h> | |
20 | #include <linux/delay.h> | |
21 | #include <linux/hdreg.h> | |
22 | #include <linux/ide.h> | |
23 | #include <linux/bitops.h> | |
1e86240f | 24 | #include <linux/nmi.h> |
1da177e4 LT |
25 | |
26 | #include <asm/byteorder.h> | |
27 | #include <asm/irq.h> | |
28 | #include <asm/uaccess.h> | |
29 | #include <asm/io.h> | |
30 | ||
31 | /* | |
32 | * Conventional PIO operations for ATA devices | |
33 | */ | |
34 | ||
35 | static u8 ide_inb (unsigned long port) | |
36 | { | |
37 | return (u8) inb(port); | |
38 | } | |
39 | ||
1da177e4 LT |
40 | static void ide_outb (u8 val, unsigned long port) |
41 | { | |
42 | outb(val, port); | |
43 | } | |
44 | ||
f8c4bd0a | 45 | static void ide_outbsync(ide_hwif_t *hwif, u8 addr, unsigned long port) |
1da177e4 LT |
46 | { |
47 | outb(addr, port); | |
48 | } | |
49 | ||
1da177e4 LT |
50 | void default_hwif_iops (ide_hwif_t *hwif) |
51 | { | |
52 | hwif->OUTB = ide_outb; | |
53 | hwif->OUTBSYNC = ide_outbsync; | |
1da177e4 | 54 | hwif->INB = ide_inb; |
1da177e4 LT |
55 | } |
56 | ||
1da177e4 LT |
57 | /* |
58 | * MMIO operations, typically used for SATA controllers | |
59 | */ | |
60 | ||
61 | static u8 ide_mm_inb (unsigned long port) | |
62 | { | |
63 | return (u8) readb((void __iomem *) port); | |
64 | } | |
65 | ||
1da177e4 LT |
66 | static void ide_mm_outb (u8 value, unsigned long port) |
67 | { | |
68 | writeb(value, (void __iomem *) port); | |
69 | } | |
70 | ||
f8c4bd0a | 71 | static void ide_mm_outbsync(ide_hwif_t *hwif, u8 value, unsigned long port) |
1da177e4 LT |
72 | { |
73 | writeb(value, (void __iomem *) port); | |
74 | } | |
75 | ||
1da177e4 LT |
76 | void default_hwif_mmiops (ide_hwif_t *hwif) |
77 | { | |
78 | hwif->OUTB = ide_mm_outb; | |
79 | /* Most systems will need to override OUTBSYNC, alas however | |
80 | this one is controller specific! */ | |
81 | hwif->OUTBSYNC = ide_mm_outbsync; | |
1da177e4 | 82 | hwif->INB = ide_mm_inb; |
1da177e4 LT |
83 | } |
84 | ||
85 | EXPORT_SYMBOL(default_hwif_mmiops); | |
86 | ||
1da177e4 LT |
87 | void SELECT_DRIVE (ide_drive_t *drive) |
88 | { | |
23579a2a | 89 | ide_hwif_t *hwif = drive->hwif; |
ac95beed | 90 | const struct ide_port_ops *port_ops = hwif->port_ops; |
40f095f0 | 91 | ide_task_t task; |
23579a2a | 92 | |
ac95beed BZ |
93 | if (port_ops && port_ops->selectproc) |
94 | port_ops->selectproc(drive); | |
23579a2a | 95 | |
40f095f0 BZ |
96 | memset(&task, 0, sizeof(task)); |
97 | task.tf_flags = IDE_TFLAG_OUT_DEVICE; | |
98 | ||
99 | drive->hwif->tf_load(drive, &task); | |
1da177e4 LT |
100 | } |
101 | ||
ed4af48f | 102 | void SELECT_MASK(ide_drive_t *drive, int mask) |
1da177e4 | 103 | { |
ac95beed BZ |
104 | const struct ide_port_ops *port_ops = drive->hwif->port_ops; |
105 | ||
106 | if (port_ops && port_ops->maskproc) | |
107 | port_ops->maskproc(drive, mask); | |
1da177e4 LT |
108 | } |
109 | ||
c6dfa867 BZ |
110 | static void ide_exec_command(ide_hwif_t *hwif, u8 cmd) |
111 | { | |
112 | if (hwif->host_flags & IDE_HFLAG_MMIO) | |
113 | writeb(cmd, (void __iomem *)hwif->io_ports.command_addr); | |
114 | else | |
115 | outb(cmd, hwif->io_ports.command_addr); | |
116 | } | |
117 | ||
b73c7ee2 BZ |
118 | static u8 ide_read_status(ide_hwif_t *hwif) |
119 | { | |
120 | if (hwif->host_flags & IDE_HFLAG_MMIO) | |
121 | return readb((void __iomem *)hwif->io_ports.status_addr); | |
122 | else | |
123 | return inb(hwif->io_ports.status_addr); | |
124 | } | |
125 | ||
1f6d8a0f BZ |
126 | static u8 ide_read_altstatus(ide_hwif_t *hwif) |
127 | { | |
128 | if (hwif->host_flags & IDE_HFLAG_MMIO) | |
129 | return readb((void __iomem *)hwif->io_ports.ctl_addr); | |
130 | else | |
131 | return inb(hwif->io_ports.ctl_addr); | |
132 | } | |
133 | ||
b2f951aa BZ |
134 | static u8 ide_read_sff_dma_status(ide_hwif_t *hwif) |
135 | { | |
136 | if (hwif->host_flags & IDE_HFLAG_MMIO) | |
cab7f8ed | 137 | return readb((void __iomem *)(hwif->dma_base + ATA_DMA_STATUS)); |
b2f951aa | 138 | else |
cab7f8ed | 139 | return inb(hwif->dma_base + ATA_DMA_STATUS); |
b2f951aa BZ |
140 | } |
141 | ||
6e6afb3b BZ |
142 | static void ide_set_irq(ide_hwif_t *hwif, int on) |
143 | { | |
144 | u8 ctl = ATA_DEVCTL_OBS; | |
145 | ||
146 | if (on == 4) { /* hack for SRST */ | |
147 | ctl |= 4; | |
148 | on &= ~4; | |
149 | } | |
150 | ||
151 | ctl |= on ? 0 : 2; | |
152 | ||
153 | if (hwif->host_flags & IDE_HFLAG_MMIO) | |
154 | writeb(ctl, (void __iomem *)hwif->io_ports.ctl_addr); | |
155 | else | |
156 | outb(ctl, hwif->io_ports.ctl_addr); | |
157 | } | |
158 | ||
94cd5b62 | 159 | static void ide_tf_load(ide_drive_t *drive, ide_task_t *task) |
d309e0bb BZ |
160 | { |
161 | ide_hwif_t *hwif = drive->hwif; | |
162 | struct ide_io_ports *io_ports = &hwif->io_ports; | |
163 | struct ide_taskfile *tf = &task->tf; | |
ca545c1e BZ |
164 | void (*tf_outb)(u8 addr, unsigned long port); |
165 | u8 mmio = (hwif->host_flags & IDE_HFLAG_MMIO) ? 1 : 0; | |
d309e0bb BZ |
166 | u8 HIHI = (task->tf_flags & IDE_TFLAG_LBA48) ? 0xE0 : 0xEF; |
167 | ||
ca545c1e BZ |
168 | if (mmio) |
169 | tf_outb = ide_mm_outb; | |
170 | else | |
171 | tf_outb = ide_outb; | |
172 | ||
d309e0bb BZ |
173 | if (task->tf_flags & IDE_TFLAG_FLAGGED) |
174 | HIHI = 0xFF; | |
175 | ||
ca545c1e BZ |
176 | if (task->tf_flags & IDE_TFLAG_OUT_DATA) { |
177 | u16 data = (tf->hob_data << 8) | tf->data; | |
178 | ||
179 | if (mmio) | |
180 | writew(data, (void __iomem *)io_ports->data_addr); | |
181 | else | |
182 | outw(data, io_ports->data_addr); | |
183 | } | |
d309e0bb BZ |
184 | |
185 | if (task->tf_flags & IDE_TFLAG_OUT_HOB_FEATURE) | |
ca545c1e | 186 | tf_outb(tf->hob_feature, io_ports->feature_addr); |
d309e0bb | 187 | if (task->tf_flags & IDE_TFLAG_OUT_HOB_NSECT) |
ca545c1e | 188 | tf_outb(tf->hob_nsect, io_ports->nsect_addr); |
d309e0bb | 189 | if (task->tf_flags & IDE_TFLAG_OUT_HOB_LBAL) |
ca545c1e | 190 | tf_outb(tf->hob_lbal, io_ports->lbal_addr); |
d309e0bb | 191 | if (task->tf_flags & IDE_TFLAG_OUT_HOB_LBAM) |
ca545c1e | 192 | tf_outb(tf->hob_lbam, io_ports->lbam_addr); |
d309e0bb | 193 | if (task->tf_flags & IDE_TFLAG_OUT_HOB_LBAH) |
ca545c1e | 194 | tf_outb(tf->hob_lbah, io_ports->lbah_addr); |
d309e0bb BZ |
195 | |
196 | if (task->tf_flags & IDE_TFLAG_OUT_FEATURE) | |
ca545c1e | 197 | tf_outb(tf->feature, io_ports->feature_addr); |
d309e0bb | 198 | if (task->tf_flags & IDE_TFLAG_OUT_NSECT) |
ca545c1e | 199 | tf_outb(tf->nsect, io_ports->nsect_addr); |
d309e0bb | 200 | if (task->tf_flags & IDE_TFLAG_OUT_LBAL) |
ca545c1e | 201 | tf_outb(tf->lbal, io_ports->lbal_addr); |
d309e0bb | 202 | if (task->tf_flags & IDE_TFLAG_OUT_LBAM) |
ca545c1e | 203 | tf_outb(tf->lbam, io_ports->lbam_addr); |
d309e0bb | 204 | if (task->tf_flags & IDE_TFLAG_OUT_LBAH) |
ca545c1e | 205 | tf_outb(tf->lbah, io_ports->lbah_addr); |
d309e0bb BZ |
206 | |
207 | if (task->tf_flags & IDE_TFLAG_OUT_DEVICE) | |
ca545c1e BZ |
208 | tf_outb((tf->device & HIHI) | drive->select.all, |
209 | io_ports->device_addr); | |
d309e0bb BZ |
210 | } |
211 | ||
94cd5b62 | 212 | static void ide_tf_read(ide_drive_t *drive, ide_task_t *task) |
d309e0bb BZ |
213 | { |
214 | ide_hwif_t *hwif = drive->hwif; | |
215 | struct ide_io_ports *io_ports = &hwif->io_ports; | |
216 | struct ide_taskfile *tf = &task->tf; | |
ca545c1e BZ |
217 | void (*tf_outb)(u8 addr, unsigned long port); |
218 | u8 (*tf_inb)(unsigned long port); | |
219 | u8 mmio = (hwif->host_flags & IDE_HFLAG_MMIO) ? 1 : 0; | |
220 | ||
221 | if (mmio) { | |
222 | tf_outb = ide_mm_outb; | |
223 | tf_inb = ide_mm_inb; | |
224 | } else { | |
225 | tf_outb = ide_outb; | |
226 | tf_inb = ide_inb; | |
227 | } | |
d309e0bb BZ |
228 | |
229 | if (task->tf_flags & IDE_TFLAG_IN_DATA) { | |
ca545c1e BZ |
230 | u16 data; |
231 | ||
232 | if (mmio) | |
233 | data = readw((void __iomem *)io_ports->data_addr); | |
234 | else | |
235 | data = inw(io_ports->data_addr); | |
d309e0bb BZ |
236 | |
237 | tf->data = data & 0xff; | |
238 | tf->hob_data = (data >> 8) & 0xff; | |
239 | } | |
240 | ||
241 | /* be sure we're looking at the low order bits */ | |
ff074883 | 242 | tf_outb(ATA_DEVCTL_OBS & ~0x80, io_ports->ctl_addr); |
d309e0bb BZ |
243 | |
244 | if (task->tf_flags & IDE_TFLAG_IN_NSECT) | |
ca545c1e | 245 | tf->nsect = tf_inb(io_ports->nsect_addr); |
d309e0bb | 246 | if (task->tf_flags & IDE_TFLAG_IN_LBAL) |
ca545c1e | 247 | tf->lbal = tf_inb(io_ports->lbal_addr); |
d309e0bb | 248 | if (task->tf_flags & IDE_TFLAG_IN_LBAM) |
ca545c1e | 249 | tf->lbam = tf_inb(io_ports->lbam_addr); |
d309e0bb | 250 | if (task->tf_flags & IDE_TFLAG_IN_LBAH) |
ca545c1e | 251 | tf->lbah = tf_inb(io_ports->lbah_addr); |
d309e0bb | 252 | if (task->tf_flags & IDE_TFLAG_IN_DEVICE) |
ca545c1e | 253 | tf->device = tf_inb(io_ports->device_addr); |
d309e0bb BZ |
254 | |
255 | if (task->tf_flags & IDE_TFLAG_LBA48) { | |
ff074883 | 256 | tf_outb(ATA_DEVCTL_OBS | 0x80, io_ports->ctl_addr); |
d309e0bb BZ |
257 | |
258 | if (task->tf_flags & IDE_TFLAG_IN_HOB_FEATURE) | |
ca545c1e | 259 | tf->hob_feature = tf_inb(io_ports->feature_addr); |
d309e0bb | 260 | if (task->tf_flags & IDE_TFLAG_IN_HOB_NSECT) |
ca545c1e | 261 | tf->hob_nsect = tf_inb(io_ports->nsect_addr); |
d309e0bb | 262 | if (task->tf_flags & IDE_TFLAG_IN_HOB_LBAL) |
ca545c1e | 263 | tf->hob_lbal = tf_inb(io_ports->lbal_addr); |
d309e0bb | 264 | if (task->tf_flags & IDE_TFLAG_IN_HOB_LBAM) |
ca545c1e | 265 | tf->hob_lbam = tf_inb(io_ports->lbam_addr); |
d309e0bb | 266 | if (task->tf_flags & IDE_TFLAG_IN_HOB_LBAH) |
ca545c1e | 267 | tf->hob_lbah = tf_inb(io_ports->lbah_addr); |
d309e0bb BZ |
268 | } |
269 | } | |
270 | ||
1da177e4 LT |
271 | /* |
272 | * Some localbus EIDE interfaces require a special access sequence | |
273 | * when using 32-bit I/O instructions to transfer data. We call this | |
274 | * the "vlb_sync" sequence, which consists of three successive reads | |
275 | * of the sector count register location, with interrupts disabled | |
276 | * to ensure that the reads all happen together. | |
277 | */ | |
22cdd6ce | 278 | static void ata_vlb_sync(unsigned long port) |
1da177e4 | 279 | { |
22cdd6ce BZ |
280 | (void)inb(port); |
281 | (void)inb(port); | |
282 | (void)inb(port); | |
1da177e4 LT |
283 | } |
284 | ||
285 | /* | |
286 | * This is used for most PIO data transfers *from* the IDE interface | |
9567b349 BZ |
287 | * |
288 | * These routines will round up any request for an odd number of bytes, | |
289 | * so if an odd len is specified, be sure that there's at least one | |
290 | * extra byte allocated for the buffer. | |
1da177e4 | 291 | */ |
92d3ab27 | 292 | static void ata_input_data(ide_drive_t *drive, struct request *rq, |
9567b349 | 293 | void *buf, unsigned int len) |
1da177e4 | 294 | { |
4c3032d8 BZ |
295 | ide_hwif_t *hwif = drive->hwif; |
296 | struct ide_io_ports *io_ports = &hwif->io_ports; | |
9567b349 | 297 | unsigned long data_addr = io_ports->data_addr; |
4c3032d8 | 298 | u8 io_32bit = drive->io_32bit; |
16bb69c1 | 299 | u8 mmio = (hwif->host_flags & IDE_HFLAG_MMIO) ? 1 : 0; |
1da177e4 | 300 | |
9567b349 BZ |
301 | len++; |
302 | ||
1da177e4 | 303 | if (io_32bit) { |
16bb69c1 | 304 | unsigned long uninitialized_var(flags); |
23579a2a | 305 | |
22cdd6ce | 306 | if ((io_32bit & 2) && !mmio) { |
1da177e4 | 307 | local_irq_save(flags); |
22cdd6ce | 308 | ata_vlb_sync(io_ports->nsect_addr); |
16bb69c1 BZ |
309 | } |
310 | ||
311 | if (mmio) | |
312 | __ide_mm_insl((void __iomem *)data_addr, buf, len / 4); | |
313 | else | |
314 | insl(data_addr, buf, len / 4); | |
315 | ||
22cdd6ce | 316 | if ((io_32bit & 2) && !mmio) |
1da177e4 | 317 | local_irq_restore(flags); |
9567b349 | 318 | |
16bb69c1 BZ |
319 | if ((len & 3) >= 2) { |
320 | if (mmio) | |
321 | __ide_mm_insw((void __iomem *)data_addr, | |
322 | (u8 *)buf + (len & ~3), 1); | |
323 | else | |
324 | insw(data_addr, (u8 *)buf + (len & ~3), 1); | |
325 | } | |
326 | } else { | |
327 | if (mmio) | |
328 | __ide_mm_insw((void __iomem *)data_addr, buf, len / 2); | |
329 | else | |
330 | insw(data_addr, buf, len / 2); | |
331 | } | |
1da177e4 LT |
332 | } |
333 | ||
334 | /* | |
335 | * This is used for most PIO data transfers *to* the IDE interface | |
336 | */ | |
92d3ab27 | 337 | static void ata_output_data(ide_drive_t *drive, struct request *rq, |
9567b349 | 338 | void *buf, unsigned int len) |
1da177e4 | 339 | { |
4c3032d8 BZ |
340 | ide_hwif_t *hwif = drive->hwif; |
341 | struct ide_io_ports *io_ports = &hwif->io_ports; | |
9567b349 | 342 | unsigned long data_addr = io_ports->data_addr; |
4c3032d8 | 343 | u8 io_32bit = drive->io_32bit; |
16bb69c1 | 344 | u8 mmio = (hwif->host_flags & IDE_HFLAG_MMIO) ? 1 : 0; |
1da177e4 LT |
345 | |
346 | if (io_32bit) { | |
16bb69c1 | 347 | unsigned long uninitialized_var(flags); |
23579a2a | 348 | |
22cdd6ce | 349 | if ((io_32bit & 2) && !mmio) { |
1da177e4 | 350 | local_irq_save(flags); |
22cdd6ce | 351 | ata_vlb_sync(io_ports->nsect_addr); |
16bb69c1 BZ |
352 | } |
353 | ||
354 | if (mmio) | |
355 | __ide_mm_outsl((void __iomem *)data_addr, buf, len / 4); | |
356 | else | |
357 | outsl(data_addr, buf, len / 4); | |
358 | ||
22cdd6ce | 359 | if ((io_32bit & 2) && !mmio) |
1da177e4 | 360 | local_irq_restore(flags); |
1da177e4 | 361 | |
16bb69c1 BZ |
362 | if ((len & 3) >= 2) { |
363 | if (mmio) | |
364 | __ide_mm_outsw((void __iomem *)data_addr, | |
365 | (u8 *)buf + (len & ~3), 1); | |
366 | else | |
367 | outsw(data_addr, (u8 *)buf + (len & ~3), 1); | |
368 | } | |
369 | } else { | |
370 | if (mmio) | |
371 | __ide_mm_outsw((void __iomem *)data_addr, buf, len / 2); | |
372 | else | |
373 | outsw(data_addr, buf, len / 2); | |
374 | } | |
1da177e4 LT |
375 | } |
376 | ||
377 | void default_hwif_transport(ide_hwif_t *hwif) | |
378 | { | |
c6dfa867 | 379 | hwif->exec_command = ide_exec_command; |
b73c7ee2 | 380 | hwif->read_status = ide_read_status; |
1f6d8a0f | 381 | hwif->read_altstatus = ide_read_altstatus; |
b2f951aa BZ |
382 | hwif->read_sff_dma_status = ide_read_sff_dma_status; |
383 | ||
6e6afb3b BZ |
384 | hwif->set_irq = ide_set_irq; |
385 | ||
94cd5b62 BZ |
386 | hwif->tf_load = ide_tf_load; |
387 | hwif->tf_read = ide_tf_read; | |
388 | ||
9567b349 BZ |
389 | hwif->input_data = ata_input_data; |
390 | hwif->output_data = ata_output_data; | |
1da177e4 LT |
391 | } |
392 | ||
1da177e4 LT |
393 | void ide_fix_driveid (struct hd_driveid *id) |
394 | { | |
395 | #ifndef __LITTLE_ENDIAN | |
396 | # ifdef __BIG_ENDIAN | |
397 | int i; | |
398 | u16 *stringcast; | |
399 | ||
400 | id->config = __le16_to_cpu(id->config); | |
401 | id->cyls = __le16_to_cpu(id->cyls); | |
402 | id->reserved2 = __le16_to_cpu(id->reserved2); | |
403 | id->heads = __le16_to_cpu(id->heads); | |
404 | id->track_bytes = __le16_to_cpu(id->track_bytes); | |
405 | id->sector_bytes = __le16_to_cpu(id->sector_bytes); | |
406 | id->sectors = __le16_to_cpu(id->sectors); | |
407 | id->vendor0 = __le16_to_cpu(id->vendor0); | |
408 | id->vendor1 = __le16_to_cpu(id->vendor1); | |
409 | id->vendor2 = __le16_to_cpu(id->vendor2); | |
410 | stringcast = (u16 *)&id->serial_no[0]; | |
411 | for (i = 0; i < (20/2); i++) | |
412 | stringcast[i] = __le16_to_cpu(stringcast[i]); | |
413 | id->buf_type = __le16_to_cpu(id->buf_type); | |
414 | id->buf_size = __le16_to_cpu(id->buf_size); | |
415 | id->ecc_bytes = __le16_to_cpu(id->ecc_bytes); | |
416 | stringcast = (u16 *)&id->fw_rev[0]; | |
417 | for (i = 0; i < (8/2); i++) | |
418 | stringcast[i] = __le16_to_cpu(stringcast[i]); | |
419 | stringcast = (u16 *)&id->model[0]; | |
420 | for (i = 0; i < (40/2); i++) | |
421 | stringcast[i] = __le16_to_cpu(stringcast[i]); | |
422 | id->dword_io = __le16_to_cpu(id->dword_io); | |
423 | id->reserved50 = __le16_to_cpu(id->reserved50); | |
424 | id->field_valid = __le16_to_cpu(id->field_valid); | |
425 | id->cur_cyls = __le16_to_cpu(id->cur_cyls); | |
426 | id->cur_heads = __le16_to_cpu(id->cur_heads); | |
427 | id->cur_sectors = __le16_to_cpu(id->cur_sectors); | |
428 | id->cur_capacity0 = __le16_to_cpu(id->cur_capacity0); | |
429 | id->cur_capacity1 = __le16_to_cpu(id->cur_capacity1); | |
430 | id->lba_capacity = __le32_to_cpu(id->lba_capacity); | |
431 | id->dma_1word = __le16_to_cpu(id->dma_1word); | |
432 | id->dma_mword = __le16_to_cpu(id->dma_mword); | |
433 | id->eide_pio_modes = __le16_to_cpu(id->eide_pio_modes); | |
434 | id->eide_dma_min = __le16_to_cpu(id->eide_dma_min); | |
435 | id->eide_dma_time = __le16_to_cpu(id->eide_dma_time); | |
436 | id->eide_pio = __le16_to_cpu(id->eide_pio); | |
437 | id->eide_pio_iordy = __le16_to_cpu(id->eide_pio_iordy); | |
438 | for (i = 0; i < 2; ++i) | |
439 | id->words69_70[i] = __le16_to_cpu(id->words69_70[i]); | |
440 | for (i = 0; i < 4; ++i) | |
441 | id->words71_74[i] = __le16_to_cpu(id->words71_74[i]); | |
442 | id->queue_depth = __le16_to_cpu(id->queue_depth); | |
443 | for (i = 0; i < 4; ++i) | |
444 | id->words76_79[i] = __le16_to_cpu(id->words76_79[i]); | |
445 | id->major_rev_num = __le16_to_cpu(id->major_rev_num); | |
446 | id->minor_rev_num = __le16_to_cpu(id->minor_rev_num); | |
447 | id->command_set_1 = __le16_to_cpu(id->command_set_1); | |
448 | id->command_set_2 = __le16_to_cpu(id->command_set_2); | |
449 | id->cfsse = __le16_to_cpu(id->cfsse); | |
450 | id->cfs_enable_1 = __le16_to_cpu(id->cfs_enable_1); | |
451 | id->cfs_enable_2 = __le16_to_cpu(id->cfs_enable_2); | |
452 | id->csf_default = __le16_to_cpu(id->csf_default); | |
453 | id->dma_ultra = __le16_to_cpu(id->dma_ultra); | |
454 | id->trseuc = __le16_to_cpu(id->trseuc); | |
455 | id->trsEuc = __le16_to_cpu(id->trsEuc); | |
456 | id->CurAPMvalues = __le16_to_cpu(id->CurAPMvalues); | |
457 | id->mprc = __le16_to_cpu(id->mprc); | |
458 | id->hw_config = __le16_to_cpu(id->hw_config); | |
459 | id->acoustic = __le16_to_cpu(id->acoustic); | |
460 | id->msrqs = __le16_to_cpu(id->msrqs); | |
461 | id->sxfert = __le16_to_cpu(id->sxfert); | |
462 | id->sal = __le16_to_cpu(id->sal); | |
463 | id->spg = __le32_to_cpu(id->spg); | |
464 | id->lba_capacity_2 = __le64_to_cpu(id->lba_capacity_2); | |
465 | for (i = 0; i < 22; i++) | |
466 | id->words104_125[i] = __le16_to_cpu(id->words104_125[i]); | |
467 | id->last_lun = __le16_to_cpu(id->last_lun); | |
468 | id->word127 = __le16_to_cpu(id->word127); | |
469 | id->dlf = __le16_to_cpu(id->dlf); | |
470 | id->csfo = __le16_to_cpu(id->csfo); | |
471 | for (i = 0; i < 26; i++) | |
472 | id->words130_155[i] = __le16_to_cpu(id->words130_155[i]); | |
473 | id->word156 = __le16_to_cpu(id->word156); | |
474 | for (i = 0; i < 3; i++) | |
475 | id->words157_159[i] = __le16_to_cpu(id->words157_159[i]); | |
476 | id->cfa_power = __le16_to_cpu(id->cfa_power); | |
477 | for (i = 0; i < 14; i++) | |
478 | id->words161_175[i] = __le16_to_cpu(id->words161_175[i]); | |
479 | for (i = 0; i < 31; i++) | |
480 | id->words176_205[i] = __le16_to_cpu(id->words176_205[i]); | |
481 | for (i = 0; i < 48; i++) | |
482 | id->words206_254[i] = __le16_to_cpu(id->words206_254[i]); | |
483 | id->integrity_word = __le16_to_cpu(id->integrity_word); | |
484 | # else | |
485 | # error "Please fix <asm/byteorder.h>" | |
486 | # endif | |
487 | #endif | |
488 | } | |
489 | ||
01745112 BZ |
490 | /* |
491 | * ide_fixstring() cleans up and (optionally) byte-swaps a text string, | |
492 | * removing leading/trailing blanks and compressing internal blanks. | |
493 | * It is primarily used to tidy up the model name/number fields as | |
494 | * returned by the WIN_[P]IDENTIFY commands. | |
495 | */ | |
496 | ||
1da177e4 LT |
497 | void ide_fixstring (u8 *s, const int bytecount, const int byteswap) |
498 | { | |
499 | u8 *p = s, *end = &s[bytecount & ~1]; /* bytecount must be even */ | |
500 | ||
501 | if (byteswap) { | |
502 | /* convert from big-endian to host byte order */ | |
503 | for (p = end ; p != s;) { | |
504 | unsigned short *pp = (unsigned short *) (p -= 2); | |
505 | *pp = ntohs(*pp); | |
506 | } | |
507 | } | |
508 | /* strip leading blanks */ | |
509 | while (s != end && *s == ' ') | |
510 | ++s; | |
511 | /* compress internal blanks and strip trailing blanks */ | |
512 | while (s != end && *s) { | |
513 | if (*s++ != ' ' || (s != end && *s && *s != ' ')) | |
514 | *p++ = *(s-1); | |
515 | } | |
516 | /* wipe out trailing garbage */ | |
517 | while (p != end) | |
518 | *p++ = '\0'; | |
519 | } | |
520 | ||
521 | EXPORT_SYMBOL(ide_fixstring); | |
522 | ||
523 | /* | |
524 | * Needed for PCI irq sharing | |
525 | */ | |
526 | int drive_is_ready (ide_drive_t *drive) | |
527 | { | |
528 | ide_hwif_t *hwif = HWIF(drive); | |
529 | u8 stat = 0; | |
530 | ||
531 | if (drive->waiting_for_dma) | |
5e37bdc0 | 532 | return hwif->dma_ops->dma_test_irq(drive); |
1da177e4 LT |
533 | |
534 | #if 0 | |
535 | /* need to guarantee 400ns since last command was issued */ | |
536 | udelay(1); | |
537 | #endif | |
538 | ||
1da177e4 LT |
539 | /* |
540 | * We do a passive status test under shared PCI interrupts on | |
541 | * cards that truly share the ATA side interrupt, but may also share | |
542 | * an interrupt with another pci card/device. We make no assumptions | |
543 | * about possible isa-pnp and pci-pnp issues yet. | |
544 | */ | |
4c3032d8 | 545 | if (hwif->io_ports.ctl_addr) |
1f6d8a0f | 546 | stat = hwif->read_altstatus(hwif); |
1da177e4 | 547 | else |
1da177e4 | 548 | /* Note: this may clear a pending IRQ!! */ |
b73c7ee2 | 549 | stat = hwif->read_status(hwif); |
1da177e4 LT |
550 | |
551 | if (stat & BUSY_STAT) | |
552 | /* drive busy: definitely not interrupting */ | |
553 | return 0; | |
554 | ||
555 | /* drive ready: *might* be interrupting */ | |
556 | return 1; | |
557 | } | |
558 | ||
559 | EXPORT_SYMBOL(drive_is_ready); | |
560 | ||
1da177e4 LT |
561 | /* |
562 | * This routine busy-waits for the drive status to be not "busy". | |
563 | * It then checks the status for all of the "good" bits and none | |
564 | * of the "bad" bits, and if all is okay it returns 0. All other | |
74af21cf | 565 | * cases return error -- caller may then invoke ide_error(). |
1da177e4 LT |
566 | * |
567 | * This routine should get fixed to not hog the cpu during extra long waits.. | |
568 | * That could be done by busy-waiting for the first jiffy or two, and then | |
569 | * setting a timer to wake up at half second intervals thereafter, | |
570 | * until timeout is achieved, before timing out. | |
571 | */ | |
aedea591 | 572 | static int __ide_wait_stat(ide_drive_t *drive, u8 good, u8 bad, unsigned long timeout, u8 *rstat) |
1da177e4 | 573 | { |
b73c7ee2 | 574 | ide_hwif_t *hwif = drive->hwif; |
1da177e4 | 575 | unsigned long flags; |
74af21cf BZ |
576 | int i; |
577 | u8 stat; | |
1da177e4 LT |
578 | |
579 | udelay(1); /* spec allows drive 400ns to assert "BUSY" */ | |
b73c7ee2 | 580 | stat = hwif->read_status(hwif); |
c47137a9 BZ |
581 | |
582 | if (stat & BUSY_STAT) { | |
1da177e4 LT |
583 | local_irq_set(flags); |
584 | timeout += jiffies; | |
b73c7ee2 | 585 | while ((stat = hwif->read_status(hwif)) & BUSY_STAT) { |
1da177e4 LT |
586 | if (time_after(jiffies, timeout)) { |
587 | /* | |
588 | * One last read after the timeout in case | |
589 | * heavy interrupt load made us not make any | |
590 | * progress during the timeout.. | |
591 | */ | |
b73c7ee2 | 592 | stat = hwif->read_status(hwif); |
1da177e4 LT |
593 | if (!(stat & BUSY_STAT)) |
594 | break; | |
595 | ||
596 | local_irq_restore(flags); | |
74af21cf BZ |
597 | *rstat = stat; |
598 | return -EBUSY; | |
1da177e4 LT |
599 | } |
600 | } | |
601 | local_irq_restore(flags); | |
602 | } | |
603 | /* | |
604 | * Allow status to settle, then read it again. | |
605 | * A few rare drives vastly violate the 400ns spec here, | |
606 | * so we'll wait up to 10usec for a "good" status | |
607 | * rather than expensively fail things immediately. | |
608 | * This fix courtesy of Matthew Faupel & Niccolo Rigacci. | |
609 | */ | |
610 | for (i = 0; i < 10; i++) { | |
611 | udelay(1); | |
b73c7ee2 | 612 | stat = hwif->read_status(hwif); |
c47137a9 BZ |
613 | |
614 | if (OK_STAT(stat, good, bad)) { | |
74af21cf | 615 | *rstat = stat; |
1da177e4 | 616 | return 0; |
74af21cf | 617 | } |
1da177e4 | 618 | } |
74af21cf BZ |
619 | *rstat = stat; |
620 | return -EFAULT; | |
621 | } | |
622 | ||
623 | /* | |
624 | * In case of error returns error value after doing "*startstop = ide_error()". | |
625 | * The caller should return the updated value of "startstop" in this case, | |
626 | * "startstop" is unchanged when the function returns 0. | |
627 | */ | |
628 | int ide_wait_stat(ide_startstop_t *startstop, ide_drive_t *drive, u8 good, u8 bad, unsigned long timeout) | |
629 | { | |
630 | int err; | |
631 | u8 stat; | |
632 | ||
633 | /* bail early if we've exceeded max_failures */ | |
634 | if (drive->max_failures && (drive->failures > drive->max_failures)) { | |
635 | *startstop = ide_stopped; | |
636 | return 1; | |
637 | } | |
638 | ||
639 | err = __ide_wait_stat(drive, good, bad, timeout, &stat); | |
640 | ||
641 | if (err) { | |
642 | char *s = (err == -EBUSY) ? "status timeout" : "status error"; | |
643 | *startstop = ide_error(drive, s, stat); | |
644 | } | |
645 | ||
646 | return err; | |
1da177e4 LT |
647 | } |
648 | ||
649 | EXPORT_SYMBOL(ide_wait_stat); | |
650 | ||
a5b7e70d BZ |
651 | /** |
652 | * ide_in_drive_list - look for drive in black/white list | |
653 | * @id: drive identifier | |
654 | * @drive_table: list to inspect | |
655 | * | |
656 | * Look for a drive in the blacklist and the whitelist tables | |
657 | * Returns 1 if the drive is found in the table. | |
658 | */ | |
659 | ||
660 | int ide_in_drive_list(struct hd_driveid *id, const struct drive_list_entry *drive_table) | |
661 | { | |
662 | for ( ; drive_table->id_model; drive_table++) | |
663 | if ((!strcmp(drive_table->id_model, id->model)) && | |
664 | (!drive_table->id_firmware || | |
665 | strstr(id->fw_rev, drive_table->id_firmware))) | |
666 | return 1; | |
667 | return 0; | |
668 | } | |
669 | ||
b0244a00 BZ |
670 | EXPORT_SYMBOL_GPL(ide_in_drive_list); |
671 | ||
a5b7e70d BZ |
672 | /* |
673 | * Early UDMA66 devices don't set bit14 to 1, only bit13 is valid. | |
674 | * We list them here and depend on the device side cable detection for them. | |
8588a2b7 BZ |
675 | * |
676 | * Some optical devices with the buggy firmwares have the same problem. | |
a5b7e70d BZ |
677 | */ |
678 | static const struct drive_list_entry ivb_list[] = { | |
679 | { "QUANTUM FIREBALLlct10 05" , "A03.0900" }, | |
8588a2b7 | 680 | { "TSSTcorp CDDVDW SH-S202J" , "SB00" }, |
e97564f3 PM |
681 | { "TSSTcorp CDDVDW SH-S202J" , "SB01" }, |
682 | { "TSSTcorp CDDVDW SH-S202N" , "SB00" }, | |
683 | { "TSSTcorp CDDVDW SH-S202N" , "SB01" }, | |
3ced5c49 AS |
684 | { "TSSTcorp CDDVDW SH-S202H" , "SB00" }, |
685 | { "TSSTcorp CDDVDW SH-S202H" , "SB01" }, | |
a5b7e70d BZ |
686 | { NULL , NULL } |
687 | }; | |
688 | ||
1da177e4 LT |
689 | /* |
690 | * All hosts that use the 80c ribbon must use! | |
691 | * The name is derived from upper byte of word 93 and the 80c ribbon. | |
692 | */ | |
693 | u8 eighty_ninty_three (ide_drive_t *drive) | |
694 | { | |
7f8f48af BZ |
695 | ide_hwif_t *hwif = drive->hwif; |
696 | struct hd_driveid *id = drive->id; | |
a5b7e70d | 697 | int ivb = ide_in_drive_list(id, ivb_list); |
7f8f48af | 698 | |
49521f97 BZ |
699 | if (hwif->cbl == ATA_CBL_PATA40_SHORT) |
700 | return 1; | |
701 | ||
a5b7e70d BZ |
702 | if (ivb) |
703 | printk(KERN_DEBUG "%s: skipping word 93 validity check\n", | |
704 | drive->name); | |
705 | ||
b98f8803 GK |
706 | if (ide_dev_is_sata(id) && !ivb) |
707 | return 1; | |
708 | ||
a5b7e70d | 709 | if (hwif->cbl != ATA_CBL_PATA80 && !ivb) |
7f8f48af | 710 | goto no_80w; |
1a1276e7 | 711 | |
f68d9320 BZ |
712 | /* |
713 | * FIXME: | |
f367bed0 | 714 | * - change master/slave IDENTIFY order |
a5b7e70d | 715 | * - force bit13 (80c cable present) check also for !ivb devices |
f68d9320 BZ |
716 | * (unless the slave device is pre-ATA3) |
717 | */ | |
a5b7e70d | 718 | if ((id->hw_config & 0x4000) || (ivb && (id->hw_config & 0x2000))) |
7f8f48af BZ |
719 | return 1; |
720 | ||
721 | no_80w: | |
722 | if (drive->udma33_warned == 1) | |
723 | return 0; | |
724 | ||
725 | printk(KERN_WARNING "%s: %s side 80-wire cable detection failed, " | |
726 | "limiting max speed to UDMA33\n", | |
49521f97 BZ |
727 | drive->name, |
728 | hwif->cbl == ATA_CBL_PATA80 ? "drive" : "host"); | |
7f8f48af BZ |
729 | |
730 | drive->udma33_warned = 1; | |
731 | ||
732 | return 0; | |
1da177e4 LT |
733 | } |
734 | ||
8a455134 | 735 | int ide_driveid_update(ide_drive_t *drive) |
1da177e4 | 736 | { |
8a455134 | 737 | ide_hwif_t *hwif = drive->hwif; |
1da177e4 | 738 | struct hd_driveid *id; |
8a455134 | 739 | unsigned long timeout, flags; |
c47137a9 | 740 | u8 stat; |
1da177e4 | 741 | |
1da177e4 LT |
742 | /* |
743 | * Re-read drive->id for possible DMA mode | |
744 | * change (copied from ide-probe.c) | |
745 | */ | |
1da177e4 LT |
746 | |
747 | SELECT_MASK(drive, 1); | |
6e6afb3b | 748 | hwif->set_irq(hwif, 0); |
1da177e4 | 749 | msleep(50); |
c6dfa867 | 750 | hwif->exec_command(hwif, WIN_IDENTIFY); |
1da177e4 LT |
751 | timeout = jiffies + WAIT_WORSTCASE; |
752 | do { | |
753 | if (time_after(jiffies, timeout)) { | |
754 | SELECT_MASK(drive, 0); | |
755 | return 0; /* drive timed-out */ | |
756 | } | |
c47137a9 | 757 | |
1da177e4 | 758 | msleep(50); /* give drive a breather */ |
1f6d8a0f | 759 | stat = hwif->read_altstatus(hwif); |
c47137a9 BZ |
760 | } while (stat & BUSY_STAT); |
761 | ||
1da177e4 | 762 | msleep(50); /* wait for IRQ and DRQ_STAT */ |
b73c7ee2 | 763 | stat = hwif->read_status(hwif); |
c47137a9 BZ |
764 | |
765 | if (!OK_STAT(stat, DRQ_STAT, BAD_R_STAT)) { | |
1da177e4 LT |
766 | SELECT_MASK(drive, 0); |
767 | printk("%s: CHECK for good STATUS\n", drive->name); | |
768 | return 0; | |
769 | } | |
770 | local_irq_save(flags); | |
771 | SELECT_MASK(drive, 0); | |
772 | id = kmalloc(SECTOR_WORDS*4, GFP_ATOMIC); | |
773 | if (!id) { | |
774 | local_irq_restore(flags); | |
775 | return 0; | |
776 | } | |
9567b349 | 777 | hwif->input_data(drive, NULL, id, SECTOR_SIZE); |
b73c7ee2 | 778 | (void)hwif->read_status(hwif); /* clear drive IRQ */ |
1da177e4 LT |
779 | local_irq_enable(); |
780 | local_irq_restore(flags); | |
781 | ide_fix_driveid(id); | |
782 | if (id) { | |
783 | drive->id->dma_ultra = id->dma_ultra; | |
784 | drive->id->dma_mword = id->dma_mword; | |
785 | drive->id->dma_1word = id->dma_1word; | |
786 | /* anything more ? */ | |
787 | kfree(id); | |
3ab7efe8 BZ |
788 | |
789 | if (drive->using_dma && ide_id_dma_bug(drive)) | |
790 | ide_dma_off(drive); | |
1da177e4 LT |
791 | } |
792 | ||
793 | return 1; | |
1da177e4 LT |
794 | } |
795 | ||
74af21cf | 796 | int ide_config_drive_speed(ide_drive_t *drive, u8 speed) |
1da177e4 | 797 | { |
74af21cf | 798 | ide_hwif_t *hwif = drive->hwif; |
89613e66 | 799 | int error = 0; |
1da177e4 | 800 | u8 stat; |
59be2c80 | 801 | ide_task_t task; |
1da177e4 | 802 | |
1da177e4 | 803 | #ifdef CONFIG_BLK_DEV_IDEDMA |
5e37bdc0 BZ |
804 | if (hwif->dma_ops) /* check if host supports DMA */ |
805 | hwif->dma_ops->dma_host_set(drive, 0); | |
1da177e4 LT |
806 | #endif |
807 | ||
89613e66 SS |
808 | /* Skip setting PIO flow-control modes on pre-EIDE drives */ |
809 | if ((speed & 0xf8) == XFER_PIO_0 && !(drive->id->capability & 0x08)) | |
810 | goto skip; | |
811 | ||
1da177e4 LT |
812 | /* |
813 | * Don't use ide_wait_cmd here - it will | |
814 | * attempt to set_geometry and recalibrate, | |
815 | * but for some reason these don't work at | |
816 | * this point (lost interrupt). | |
817 | */ | |
818 | /* | |
819 | * Select the drive, and issue the SETFEATURES command | |
820 | */ | |
821 | disable_irq_nosync(hwif->irq); | |
822 | ||
823 | /* | |
824 | * FIXME: we race against the running IRQ here if | |
825 | * this is called from non IRQ context. If we use | |
826 | * disable_irq() we hang on the error path. Work | |
827 | * is needed. | |
828 | */ | |
829 | ||
830 | udelay(1); | |
831 | SELECT_DRIVE(drive); | |
832 | SELECT_MASK(drive, 0); | |
833 | udelay(1); | |
6e6afb3b | 834 | hwif->set_irq(hwif, 0); |
59be2c80 BZ |
835 | |
836 | memset(&task, 0, sizeof(task)); | |
837 | task.tf_flags = IDE_TFLAG_OUT_FEATURE | IDE_TFLAG_OUT_NSECT; | |
838 | task.tf.feature = SETFEATURES_XFER; | |
839 | task.tf.nsect = speed; | |
840 | ||
841 | hwif->tf_load(drive, &task); | |
842 | ||
c6dfa867 | 843 | hwif->exec_command(hwif, WIN_SETFEATURES); |
59be2c80 | 844 | |
81ca6919 | 845 | if (drive->quirk_list == 2) |
6e6afb3b | 846 | hwif->set_irq(hwif, 1); |
1da177e4 | 847 | |
74af21cf BZ |
848 | error = __ide_wait_stat(drive, drive->ready_stat, |
849 | BUSY_STAT|DRQ_STAT|ERR_STAT, | |
850 | WAIT_CMD, &stat); | |
1da177e4 LT |
851 | |
852 | SELECT_MASK(drive, 0); | |
853 | ||
854 | enable_irq(hwif->irq); | |
855 | ||
856 | if (error) { | |
857 | (void) ide_dump_status(drive, "set_drive_speed_status", stat); | |
858 | return error; | |
859 | } | |
860 | ||
861 | drive->id->dma_ultra &= ~0xFF00; | |
862 | drive->id->dma_mword &= ~0x0F00; | |
863 | drive->id->dma_1word &= ~0x0F00; | |
864 | ||
89613e66 | 865 | skip: |
1da177e4 | 866 | #ifdef CONFIG_BLK_DEV_IDEDMA |
f37aaf9e BZ |
867 | if ((speed >= XFER_SW_DMA_0 || (hwif->host_flags & IDE_HFLAG_VDMA)) && |
868 | drive->using_dma) | |
5e37bdc0 BZ |
869 | hwif->dma_ops->dma_host_set(drive, 1); |
870 | else if (hwif->dma_ops) /* check if host supports DMA */ | |
4a546e04 | 871 | ide_dma_off_quietly(drive); |
1da177e4 LT |
872 | #endif |
873 | ||
874 | switch(speed) { | |
875 | case XFER_UDMA_7: drive->id->dma_ultra |= 0x8080; break; | |
876 | case XFER_UDMA_6: drive->id->dma_ultra |= 0x4040; break; | |
877 | case XFER_UDMA_5: drive->id->dma_ultra |= 0x2020; break; | |
878 | case XFER_UDMA_4: drive->id->dma_ultra |= 0x1010; break; | |
879 | case XFER_UDMA_3: drive->id->dma_ultra |= 0x0808; break; | |
880 | case XFER_UDMA_2: drive->id->dma_ultra |= 0x0404; break; | |
881 | case XFER_UDMA_1: drive->id->dma_ultra |= 0x0202; break; | |
882 | case XFER_UDMA_0: drive->id->dma_ultra |= 0x0101; break; | |
883 | case XFER_MW_DMA_2: drive->id->dma_mword |= 0x0404; break; | |
884 | case XFER_MW_DMA_1: drive->id->dma_mword |= 0x0202; break; | |
885 | case XFER_MW_DMA_0: drive->id->dma_mword |= 0x0101; break; | |
886 | case XFER_SW_DMA_2: drive->id->dma_1word |= 0x0404; break; | |
887 | case XFER_SW_DMA_1: drive->id->dma_1word |= 0x0202; break; | |
888 | case XFER_SW_DMA_0: drive->id->dma_1word |= 0x0101; break; | |
889 | default: break; | |
890 | } | |
891 | if (!drive->init_speed) | |
892 | drive->init_speed = speed; | |
893 | drive->current_speed = speed; | |
894 | return error; | |
895 | } | |
896 | ||
1da177e4 LT |
897 | /* |
898 | * This should get invoked any time we exit the driver to | |
899 | * wait for an interrupt response from a drive. handler() points | |
900 | * at the appropriate code to handle the next interrupt, and a | |
901 | * timer is started to prevent us from waiting forever in case | |
902 | * something goes wrong (see the ide_timer_expiry() handler later on). | |
903 | * | |
904 | * See also ide_execute_command | |
905 | */ | |
906 | static void __ide_set_handler (ide_drive_t *drive, ide_handler_t *handler, | |
907 | unsigned int timeout, ide_expiry_t *expiry) | |
908 | { | |
909 | ide_hwgroup_t *hwgroup = HWGROUP(drive); | |
910 | ||
d30a426d | 911 | BUG_ON(hwgroup->handler); |
1da177e4 LT |
912 | hwgroup->handler = handler; |
913 | hwgroup->expiry = expiry; | |
914 | hwgroup->timer.expires = jiffies + timeout; | |
d30a426d | 915 | hwgroup->req_gen_timer = hwgroup->req_gen; |
1da177e4 LT |
916 | add_timer(&hwgroup->timer); |
917 | } | |
918 | ||
919 | void ide_set_handler (ide_drive_t *drive, ide_handler_t *handler, | |
920 | unsigned int timeout, ide_expiry_t *expiry) | |
921 | { | |
922 | unsigned long flags; | |
923 | spin_lock_irqsave(&ide_lock, flags); | |
924 | __ide_set_handler(drive, handler, timeout, expiry); | |
925 | spin_unlock_irqrestore(&ide_lock, flags); | |
926 | } | |
927 | ||
928 | EXPORT_SYMBOL(ide_set_handler); | |
929 | ||
930 | /** | |
931 | * ide_execute_command - execute an IDE command | |
932 | * @drive: IDE drive to issue the command against | |
933 | * @command: command byte to write | |
934 | * @handler: handler for next phase | |
935 | * @timeout: timeout for command | |
936 | * @expiry: handler to run on timeout | |
937 | * | |
938 | * Helper function to issue an IDE command. This handles the | |
939 | * atomicity requirements, command timing and ensures that the | |
940 | * handler and IRQ setup do not race. All IDE command kick off | |
941 | * should go via this function or do equivalent locking. | |
942 | */ | |
cd2a2d96 BZ |
943 | |
944 | void ide_execute_command(ide_drive_t *drive, u8 cmd, ide_handler_t *handler, | |
945 | unsigned timeout, ide_expiry_t *expiry) | |
1da177e4 LT |
946 | { |
947 | unsigned long flags; | |
1da177e4 | 948 | ide_hwif_t *hwif = HWIF(drive); |
629f944b | 949 | |
1da177e4 | 950 | spin_lock_irqsave(&ide_lock, flags); |
629f944b | 951 | __ide_set_handler(drive, handler, timeout, expiry); |
c6dfa867 | 952 | hwif->exec_command(hwif, cmd); |
629f944b BZ |
953 | /* |
954 | * Drive takes 400nS to respond, we must avoid the IRQ being | |
955 | * serviced before that. | |
956 | * | |
957 | * FIXME: we could skip this delay with care on non shared devices | |
958 | */ | |
1da177e4 LT |
959 | ndelay(400); |
960 | spin_unlock_irqrestore(&ide_lock, flags); | |
961 | } | |
1da177e4 LT |
962 | EXPORT_SYMBOL(ide_execute_command); |
963 | ||
1fc14258 BZ |
964 | void ide_execute_pkt_cmd(ide_drive_t *drive) |
965 | { | |
966 | ide_hwif_t *hwif = drive->hwif; | |
967 | unsigned long flags; | |
968 | ||
969 | spin_lock_irqsave(&ide_lock, flags); | |
c6dfa867 | 970 | hwif->exec_command(hwif, WIN_PACKETCMD); |
1fc14258 BZ |
971 | ndelay(400); |
972 | spin_unlock_irqrestore(&ide_lock, flags); | |
973 | } | |
974 | EXPORT_SYMBOL_GPL(ide_execute_pkt_cmd); | |
1da177e4 | 975 | |
64a8f00f | 976 | static inline void ide_complete_drive_reset(ide_drive_t *drive, int err) |
79e36a9f EO |
977 | { |
978 | struct request *rq = drive->hwif->hwgroup->rq; | |
979 | ||
980 | if (rq && blk_special_request(rq) && rq->cmd[0] == REQ_DRIVE_RESET) | |
64a8f00f | 981 | ide_end_request(drive, err ? err : 1, 0); |
79e36a9f EO |
982 | } |
983 | ||
1da177e4 LT |
984 | /* needed below */ |
985 | static ide_startstop_t do_reset1 (ide_drive_t *, int); | |
986 | ||
987 | /* | |
988 | * atapi_reset_pollfunc() gets invoked to poll the interface for completion every 50ms | |
989 | * during an atapi drive reset operation. If the drive has not yet responded, | |
990 | * and we have not yet hit our maximum waiting time, then the timer is restarted | |
991 | * for another 50ms. | |
992 | */ | |
993 | static ide_startstop_t atapi_reset_pollfunc (ide_drive_t *drive) | |
994 | { | |
b73c7ee2 BZ |
995 | ide_hwif_t *hwif = drive->hwif; |
996 | ide_hwgroup_t *hwgroup = hwif->hwgroup; | |
1da177e4 LT |
997 | u8 stat; |
998 | ||
999 | SELECT_DRIVE(drive); | |
1000 | udelay (10); | |
b73c7ee2 | 1001 | stat = hwif->read_status(hwif); |
1da177e4 | 1002 | |
c47137a9 | 1003 | if (OK_STAT(stat, 0, BUSY_STAT)) |
1da177e4 | 1004 | printk("%s: ATAPI reset complete\n", drive->name); |
c47137a9 | 1005 | else { |
1da177e4 | 1006 | if (time_before(jiffies, hwgroup->poll_timeout)) { |
1da177e4 LT |
1007 | ide_set_handler(drive, &atapi_reset_pollfunc, HZ/20, NULL); |
1008 | /* continue polling */ | |
1009 | return ide_started; | |
1010 | } | |
1011 | /* end of polling */ | |
1012 | hwgroup->polling = 0; | |
1013 | printk("%s: ATAPI reset timed-out, status=0x%02x\n", | |
1014 | drive->name, stat); | |
1015 | /* do it the old fashioned way */ | |
1016 | return do_reset1(drive, 1); | |
1017 | } | |
1018 | /* done polling */ | |
1019 | hwgroup->polling = 0; | |
64a8f00f | 1020 | ide_complete_drive_reset(drive, 0); |
1da177e4 LT |
1021 | return ide_stopped; |
1022 | } | |
1023 | ||
1024 | /* | |
1025 | * reset_pollfunc() gets invoked to poll the interface for completion every 50ms | |
1026 | * during an ide reset operation. If the drives have not yet responded, | |
1027 | * and we have not yet hit our maximum waiting time, then the timer is restarted | |
1028 | * for another 50ms. | |
1029 | */ | |
1030 | static ide_startstop_t reset_pollfunc (ide_drive_t *drive) | |
1031 | { | |
1032 | ide_hwgroup_t *hwgroup = HWGROUP(drive); | |
1033 | ide_hwif_t *hwif = HWIF(drive); | |
ac95beed | 1034 | const struct ide_port_ops *port_ops = hwif->port_ops; |
1da177e4 | 1035 | u8 tmp; |
64a8f00f | 1036 | int err = 0; |
1da177e4 | 1037 | |
ac95beed | 1038 | if (port_ops && port_ops->reset_poll) { |
64a8f00f EO |
1039 | err = port_ops->reset_poll(drive); |
1040 | if (err) { | |
1da177e4 LT |
1041 | printk(KERN_ERR "%s: host reset_poll failure for %s.\n", |
1042 | hwif->name, drive->name); | |
79e36a9f | 1043 | goto out; |
1da177e4 LT |
1044 | } |
1045 | } | |
1046 | ||
b73c7ee2 | 1047 | tmp = hwif->read_status(hwif); |
c47137a9 BZ |
1048 | |
1049 | if (!OK_STAT(tmp, 0, BUSY_STAT)) { | |
1da177e4 | 1050 | if (time_before(jiffies, hwgroup->poll_timeout)) { |
1da177e4 LT |
1051 | ide_set_handler(drive, &reset_pollfunc, HZ/20, NULL); |
1052 | /* continue polling */ | |
1053 | return ide_started; | |
1054 | } | |
1055 | printk("%s: reset timed-out, status=0x%02x\n", hwif->name, tmp); | |
1056 | drive->failures++; | |
64a8f00f | 1057 | err = -EIO; |
1da177e4 LT |
1058 | } else { |
1059 | printk("%s: reset: ", hwif->name); | |
64a57fe4 BZ |
1060 | tmp = ide_read_error(drive); |
1061 | ||
1062 | if (tmp == 1) { | |
1da177e4 LT |
1063 | printk("success\n"); |
1064 | drive->failures = 0; | |
1065 | } else { | |
1066 | drive->failures++; | |
1067 | printk("master: "); | |
1068 | switch (tmp & 0x7f) { | |
1069 | case 1: printk("passed"); | |
1070 | break; | |
1071 | case 2: printk("formatter device error"); | |
1072 | break; | |
1073 | case 3: printk("sector buffer error"); | |
1074 | break; | |
1075 | case 4: printk("ECC circuitry error"); | |
1076 | break; | |
1077 | case 5: printk("controlling MPU error"); | |
1078 | break; | |
1079 | default:printk("error (0x%02x?)", tmp); | |
1080 | } | |
1081 | if (tmp & 0x80) | |
1082 | printk("; slave: failed"); | |
1083 | printk("\n"); | |
64a8f00f | 1084 | err = -EIO; |
1da177e4 LT |
1085 | } |
1086 | } | |
79e36a9f | 1087 | out: |
64a8f00f EO |
1088 | hwgroup->polling = 0; /* done polling */ |
1089 | ide_complete_drive_reset(drive, err); | |
1da177e4 LT |
1090 | return ide_stopped; |
1091 | } | |
1092 | ||
1da177e4 LT |
1093 | static void ide_disk_pre_reset(ide_drive_t *drive) |
1094 | { | |
1095 | int legacy = (drive->id->cfs_enable_2 & 0x0400) ? 0 : 1; | |
1096 | ||
1097 | drive->special.all = 0; | |
1098 | drive->special.b.set_geometry = legacy; | |
1099 | drive->special.b.recalibrate = legacy; | |
4ee06b7e | 1100 | drive->mult_count = 0; |
1da177e4 LT |
1101 | if (!drive->keep_settings && !drive->using_dma) |
1102 | drive->mult_req = 0; | |
1103 | if (drive->mult_req != drive->mult_count) | |
1104 | drive->special.b.set_multmode = 1; | |
1105 | } | |
1106 | ||
1107 | static void pre_reset(ide_drive_t *drive) | |
1108 | { | |
ac95beed BZ |
1109 | const struct ide_port_ops *port_ops = drive->hwif->port_ops; |
1110 | ||
1da177e4 LT |
1111 | if (drive->media == ide_disk) |
1112 | ide_disk_pre_reset(drive); | |
1113 | else | |
1114 | drive->post_reset = 1; | |
1115 | ||
99ffbe0e BZ |
1116 | if (drive->using_dma) { |
1117 | if (drive->crc_count) | |
578cfa0d | 1118 | ide_check_dma_crc(drive); |
99ffbe0e BZ |
1119 | else |
1120 | ide_dma_off(drive); | |
1121 | } | |
1122 | ||
1123 | if (!drive->keep_settings) { | |
1124 | if (!drive->using_dma) { | |
1da177e4 LT |
1125 | drive->unmask = 0; |
1126 | drive->io_32bit = 0; | |
1127 | } | |
1128 | return; | |
1129 | } | |
1da177e4 | 1130 | |
ac95beed BZ |
1131 | if (port_ops && port_ops->pre_reset) |
1132 | port_ops->pre_reset(drive); | |
1da177e4 | 1133 | |
513daadd SS |
1134 | if (drive->current_speed != 0xff) |
1135 | drive->desired_speed = drive->current_speed; | |
1136 | drive->current_speed = 0xff; | |
1da177e4 LT |
1137 | } |
1138 | ||
1139 | /* | |
1140 | * do_reset1() attempts to recover a confused drive by resetting it. | |
1141 | * Unfortunately, resetting a disk drive actually resets all devices on | |
1142 | * the same interface, so it can really be thought of as resetting the | |
1143 | * interface rather than resetting the drive. | |
1144 | * | |
1145 | * ATAPI devices have their own reset mechanism which allows them to be | |
1146 | * individually reset without clobbering other devices on the same interface. | |
1147 | * | |
1148 | * Unfortunately, the IDE interface does not generate an interrupt to let | |
1149 | * us know when the reset operation has finished, so we must poll for this. | |
1150 | * Equally poor, though, is the fact that this may a very long time to complete, | |
1151 | * (up to 30 seconds worstcase). So, instead of busy-waiting here for it, | |
1152 | * we set a timer to poll at 50ms intervals. | |
1153 | */ | |
1154 | static ide_startstop_t do_reset1 (ide_drive_t *drive, int do_not_try_atapi) | |
1155 | { | |
1156 | unsigned int unit; | |
1157 | unsigned long flags; | |
1158 | ide_hwif_t *hwif; | |
1159 | ide_hwgroup_t *hwgroup; | |
4c3032d8 | 1160 | struct ide_io_ports *io_ports; |
ac95beed | 1161 | const struct ide_port_ops *port_ops; |
23579a2a | 1162 | |
1da177e4 LT |
1163 | spin_lock_irqsave(&ide_lock, flags); |
1164 | hwif = HWIF(drive); | |
1165 | hwgroup = HWGROUP(drive); | |
1166 | ||
4c3032d8 BZ |
1167 | io_ports = &hwif->io_ports; |
1168 | ||
1da177e4 | 1169 | /* We must not reset with running handlers */ |
125e1874 | 1170 | BUG_ON(hwgroup->handler != NULL); |
1da177e4 LT |
1171 | |
1172 | /* For an ATAPI device, first try an ATAPI SRST. */ | |
1173 | if (drive->media != ide_disk && !do_not_try_atapi) { | |
1174 | pre_reset(drive); | |
1175 | SELECT_DRIVE(drive); | |
1176 | udelay (20); | |
c6dfa867 | 1177 | hwif->exec_command(hwif, WIN_SRST); |
68ad9910 | 1178 | ndelay(400); |
1da177e4 LT |
1179 | hwgroup->poll_timeout = jiffies + WAIT_WORSTCASE; |
1180 | hwgroup->polling = 1; | |
1181 | __ide_set_handler(drive, &atapi_reset_pollfunc, HZ/20, NULL); | |
1182 | spin_unlock_irqrestore(&ide_lock, flags); | |
1183 | return ide_started; | |
1184 | } | |
1185 | ||
1186 | /* | |
1187 | * First, reset any device state data we were maintaining | |
1188 | * for any of the drives on this interface. | |
1189 | */ | |
1190 | for (unit = 0; unit < MAX_DRIVES; ++unit) | |
1191 | pre_reset(&hwif->drives[unit]); | |
1192 | ||
4c3032d8 | 1193 | if (io_ports->ctl_addr == 0) { |
1da177e4 | 1194 | spin_unlock_irqrestore(&ide_lock, flags); |
64a8f00f | 1195 | ide_complete_drive_reset(drive, -ENXIO); |
1da177e4 LT |
1196 | return ide_stopped; |
1197 | } | |
1198 | ||
1199 | /* | |
1200 | * Note that we also set nIEN while resetting the device, | |
1201 | * to mask unwanted interrupts from the interface during the reset. | |
1202 | * However, due to the design of PC hardware, this will cause an | |
1203 | * immediate interrupt due to the edge transition it produces. | |
1204 | * This single interrupt gives us a "fast poll" for drives that | |
1205 | * recover from reset very quickly, saving us the first 50ms wait time. | |
6e6afb3b BZ |
1206 | * |
1207 | * TODO: add ->softreset method and stop abusing ->set_irq | |
1da177e4 LT |
1208 | */ |
1209 | /* set SRST and nIEN */ | |
6e6afb3b | 1210 | hwif->set_irq(hwif, 4); |
1da177e4 LT |
1211 | /* more than enough time */ |
1212 | udelay(10); | |
6e6afb3b BZ |
1213 | /* clear SRST, leave nIEN (unless device is on the quirk list) */ |
1214 | hwif->set_irq(hwif, drive->quirk_list == 2); | |
1da177e4 LT |
1215 | /* more than enough time */ |
1216 | udelay(10); | |
1217 | hwgroup->poll_timeout = jiffies + WAIT_WORSTCASE; | |
1218 | hwgroup->polling = 1; | |
1219 | __ide_set_handler(drive, &reset_pollfunc, HZ/20, NULL); | |
1220 | ||
1221 | /* | |
1222 | * Some weird controller like resetting themselves to a strange | |
1223 | * state when the disks are reset this way. At least, the Winbond | |
1224 | * 553 documentation says that | |
1225 | */ | |
ac95beed BZ |
1226 | port_ops = hwif->port_ops; |
1227 | if (port_ops && port_ops->resetproc) | |
1228 | port_ops->resetproc(drive); | |
1da177e4 LT |
1229 | |
1230 | spin_unlock_irqrestore(&ide_lock, flags); | |
1231 | return ide_started; | |
1232 | } | |
1233 | ||
1234 | /* | |
1235 | * ide_do_reset() is the entry point to the drive/interface reset code. | |
1236 | */ | |
1237 | ||
1238 | ide_startstop_t ide_do_reset (ide_drive_t *drive) | |
1239 | { | |
1240 | return do_reset1(drive, 0); | |
1241 | } | |
1242 | ||
1243 | EXPORT_SYMBOL(ide_do_reset); | |
1244 | ||
1245 | /* | |
1246 | * ide_wait_not_busy() waits for the currently selected device on the hwif | |
9d501529 | 1247 | * to report a non-busy status, see comments in ide_probe_port(). |
1da177e4 LT |
1248 | */ |
1249 | int ide_wait_not_busy(ide_hwif_t *hwif, unsigned long timeout) | |
1250 | { | |
1251 | u8 stat = 0; | |
1252 | ||
1253 | while(timeout--) { | |
1254 | /* | |
1255 | * Turn this into a schedule() sleep once I'm sure | |
1256 | * about locking issues (2.5 work ?). | |
1257 | */ | |
1258 | mdelay(1); | |
b73c7ee2 | 1259 | stat = hwif->read_status(hwif); |
1da177e4 LT |
1260 | if ((stat & BUSY_STAT) == 0) |
1261 | return 0; | |
1262 | /* | |
1263 | * Assume a value of 0xff means nothing is connected to | |
1264 | * the interface and it doesn't implement the pull-down | |
1265 | * resistor on D7. | |
1266 | */ | |
1267 | if (stat == 0xff) | |
1268 | return -ENODEV; | |
6842f8c8 | 1269 | touch_softlockup_watchdog(); |
1e86240f | 1270 | touch_nmi_watchdog(); |
1da177e4 LT |
1271 | } |
1272 | return -EBUSY; | |
1273 | } | |
1274 | ||
1275 | EXPORT_SYMBOL_GPL(ide_wait_not_busy); | |
1276 |