Commit | Line | Data |
---|---|---|
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 | ||
45 | static void ide_outbsync (ide_drive_t *drive, u8 addr, unsigned long port) | |
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 | ||
71 | static void ide_mm_outbsync (ide_drive_t *drive, u8 value, unsigned long port) | |
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; |
23579a2a | 91 | |
ac95beed BZ |
92 | if (port_ops && port_ops->selectproc) |
93 | port_ops->selectproc(drive); | |
23579a2a | 94 | |
4c3032d8 | 95 | hwif->OUTB(drive->select.all, hwif->io_ports.device_addr); |
1da177e4 LT |
96 | } |
97 | ||
e0b4eb51 | 98 | static void SELECT_MASK(ide_drive_t *drive, int mask) |
1da177e4 | 99 | { |
ac95beed BZ |
100 | const struct ide_port_ops *port_ops = drive->hwif->port_ops; |
101 | ||
102 | if (port_ops && port_ops->maskproc) | |
103 | port_ops->maskproc(drive, mask); | |
1da177e4 LT |
104 | } |
105 | ||
94cd5b62 | 106 | static void ide_tf_load(ide_drive_t *drive, ide_task_t *task) |
d309e0bb BZ |
107 | { |
108 | ide_hwif_t *hwif = drive->hwif; | |
109 | struct ide_io_ports *io_ports = &hwif->io_ports; | |
110 | struct ide_taskfile *tf = &task->tf; | |
ca545c1e BZ |
111 | void (*tf_outb)(u8 addr, unsigned long port); |
112 | u8 mmio = (hwif->host_flags & IDE_HFLAG_MMIO) ? 1 : 0; | |
d309e0bb BZ |
113 | u8 HIHI = (task->tf_flags & IDE_TFLAG_LBA48) ? 0xE0 : 0xEF; |
114 | ||
ca545c1e BZ |
115 | if (mmio) |
116 | tf_outb = ide_mm_outb; | |
117 | else | |
118 | tf_outb = ide_outb; | |
119 | ||
d309e0bb BZ |
120 | if (task->tf_flags & IDE_TFLAG_FLAGGED) |
121 | HIHI = 0xFF; | |
122 | ||
123 | ide_set_irq(drive, 1); | |
124 | ||
125 | if ((task->tf_flags & IDE_TFLAG_NO_SELECT_MASK) == 0) | |
126 | SELECT_MASK(drive, 0); | |
127 | ||
ca545c1e BZ |
128 | if (task->tf_flags & IDE_TFLAG_OUT_DATA) { |
129 | u16 data = (tf->hob_data << 8) | tf->data; | |
130 | ||
131 | if (mmio) | |
132 | writew(data, (void __iomem *)io_ports->data_addr); | |
133 | else | |
134 | outw(data, io_ports->data_addr); | |
135 | } | |
d309e0bb BZ |
136 | |
137 | if (task->tf_flags & IDE_TFLAG_OUT_HOB_FEATURE) | |
ca545c1e | 138 | tf_outb(tf->hob_feature, io_ports->feature_addr); |
d309e0bb | 139 | if (task->tf_flags & IDE_TFLAG_OUT_HOB_NSECT) |
ca545c1e | 140 | tf_outb(tf->hob_nsect, io_ports->nsect_addr); |
d309e0bb | 141 | if (task->tf_flags & IDE_TFLAG_OUT_HOB_LBAL) |
ca545c1e | 142 | tf_outb(tf->hob_lbal, io_ports->lbal_addr); |
d309e0bb | 143 | if (task->tf_flags & IDE_TFLAG_OUT_HOB_LBAM) |
ca545c1e | 144 | tf_outb(tf->hob_lbam, io_ports->lbam_addr); |
d309e0bb | 145 | if (task->tf_flags & IDE_TFLAG_OUT_HOB_LBAH) |
ca545c1e | 146 | tf_outb(tf->hob_lbah, io_ports->lbah_addr); |
d309e0bb BZ |
147 | |
148 | if (task->tf_flags & IDE_TFLAG_OUT_FEATURE) | |
ca545c1e | 149 | tf_outb(tf->feature, io_ports->feature_addr); |
d309e0bb | 150 | if (task->tf_flags & IDE_TFLAG_OUT_NSECT) |
ca545c1e | 151 | tf_outb(tf->nsect, io_ports->nsect_addr); |
d309e0bb | 152 | if (task->tf_flags & IDE_TFLAG_OUT_LBAL) |
ca545c1e | 153 | tf_outb(tf->lbal, io_ports->lbal_addr); |
d309e0bb | 154 | if (task->tf_flags & IDE_TFLAG_OUT_LBAM) |
ca545c1e | 155 | tf_outb(tf->lbam, io_ports->lbam_addr); |
d309e0bb | 156 | if (task->tf_flags & IDE_TFLAG_OUT_LBAH) |
ca545c1e | 157 | tf_outb(tf->lbah, io_ports->lbah_addr); |
d309e0bb BZ |
158 | |
159 | if (task->tf_flags & IDE_TFLAG_OUT_DEVICE) | |
ca545c1e BZ |
160 | tf_outb((tf->device & HIHI) | drive->select.all, |
161 | io_ports->device_addr); | |
d309e0bb BZ |
162 | } |
163 | ||
94cd5b62 | 164 | static void ide_tf_read(ide_drive_t *drive, ide_task_t *task) |
d309e0bb BZ |
165 | { |
166 | ide_hwif_t *hwif = drive->hwif; | |
167 | struct ide_io_ports *io_ports = &hwif->io_ports; | |
168 | struct ide_taskfile *tf = &task->tf; | |
ca545c1e BZ |
169 | void (*tf_outb)(u8 addr, unsigned long port); |
170 | u8 (*tf_inb)(unsigned long port); | |
171 | u8 mmio = (hwif->host_flags & IDE_HFLAG_MMIO) ? 1 : 0; | |
172 | ||
173 | if (mmio) { | |
174 | tf_outb = ide_mm_outb; | |
175 | tf_inb = ide_mm_inb; | |
176 | } else { | |
177 | tf_outb = ide_outb; | |
178 | tf_inb = ide_inb; | |
179 | } | |
d309e0bb BZ |
180 | |
181 | if (task->tf_flags & IDE_TFLAG_IN_DATA) { | |
ca545c1e BZ |
182 | u16 data; |
183 | ||
184 | if (mmio) | |
185 | data = readw((void __iomem *)io_ports->data_addr); | |
186 | else | |
187 | data = inw(io_ports->data_addr); | |
d309e0bb BZ |
188 | |
189 | tf->data = data & 0xff; | |
190 | tf->hob_data = (data >> 8) & 0xff; | |
191 | } | |
192 | ||
193 | /* be sure we're looking at the low order bits */ | |
ca545c1e | 194 | tf_outb(drive->ctl & ~0x80, io_ports->ctl_addr); |
d309e0bb BZ |
195 | |
196 | if (task->tf_flags & IDE_TFLAG_IN_NSECT) | |
ca545c1e | 197 | tf->nsect = tf_inb(io_ports->nsect_addr); |
d309e0bb | 198 | if (task->tf_flags & IDE_TFLAG_IN_LBAL) |
ca545c1e | 199 | tf->lbal = tf_inb(io_ports->lbal_addr); |
d309e0bb | 200 | if (task->tf_flags & IDE_TFLAG_IN_LBAM) |
ca545c1e | 201 | tf->lbam = tf_inb(io_ports->lbam_addr); |
d309e0bb | 202 | if (task->tf_flags & IDE_TFLAG_IN_LBAH) |
ca545c1e | 203 | tf->lbah = tf_inb(io_ports->lbah_addr); |
d309e0bb | 204 | if (task->tf_flags & IDE_TFLAG_IN_DEVICE) |
ca545c1e | 205 | tf->device = tf_inb(io_ports->device_addr); |
d309e0bb BZ |
206 | |
207 | if (task->tf_flags & IDE_TFLAG_LBA48) { | |
ca545c1e | 208 | tf_outb(drive->ctl | 0x80, io_ports->ctl_addr); |
d309e0bb BZ |
209 | |
210 | if (task->tf_flags & IDE_TFLAG_IN_HOB_FEATURE) | |
ca545c1e | 211 | tf->hob_feature = tf_inb(io_ports->feature_addr); |
d309e0bb | 212 | if (task->tf_flags & IDE_TFLAG_IN_HOB_NSECT) |
ca545c1e | 213 | tf->hob_nsect = tf_inb(io_ports->nsect_addr); |
d309e0bb | 214 | if (task->tf_flags & IDE_TFLAG_IN_HOB_LBAL) |
ca545c1e | 215 | tf->hob_lbal = tf_inb(io_ports->lbal_addr); |
d309e0bb | 216 | if (task->tf_flags & IDE_TFLAG_IN_HOB_LBAM) |
ca545c1e | 217 | tf->hob_lbam = tf_inb(io_ports->lbam_addr); |
d309e0bb | 218 | if (task->tf_flags & IDE_TFLAG_IN_HOB_LBAH) |
ca545c1e | 219 | tf->hob_lbah = tf_inb(io_ports->lbah_addr); |
d309e0bb BZ |
220 | } |
221 | } | |
222 | ||
1da177e4 LT |
223 | /* |
224 | * Some localbus EIDE interfaces require a special access sequence | |
225 | * when using 32-bit I/O instructions to transfer data. We call this | |
226 | * the "vlb_sync" sequence, which consists of three successive reads | |
227 | * of the sector count register location, with interrupts disabled | |
228 | * to ensure that the reads all happen together. | |
229 | */ | |
22cdd6ce | 230 | static void ata_vlb_sync(unsigned long port) |
1da177e4 | 231 | { |
22cdd6ce BZ |
232 | (void)inb(port); |
233 | (void)inb(port); | |
234 | (void)inb(port); | |
1da177e4 LT |
235 | } |
236 | ||
237 | /* | |
238 | * This is used for most PIO data transfers *from* the IDE interface | |
9567b349 BZ |
239 | * |
240 | * These routines will round up any request for an odd number of bytes, | |
241 | * so if an odd len is specified, be sure that there's at least one | |
242 | * extra byte allocated for the buffer. | |
1da177e4 | 243 | */ |
92d3ab27 | 244 | static void ata_input_data(ide_drive_t *drive, struct request *rq, |
9567b349 | 245 | void *buf, unsigned int len) |
1da177e4 | 246 | { |
4c3032d8 BZ |
247 | ide_hwif_t *hwif = drive->hwif; |
248 | struct ide_io_ports *io_ports = &hwif->io_ports; | |
9567b349 | 249 | unsigned long data_addr = io_ports->data_addr; |
4c3032d8 | 250 | u8 io_32bit = drive->io_32bit; |
16bb69c1 | 251 | u8 mmio = (hwif->host_flags & IDE_HFLAG_MMIO) ? 1 : 0; |
1da177e4 | 252 | |
9567b349 BZ |
253 | len++; |
254 | ||
1da177e4 | 255 | if (io_32bit) { |
16bb69c1 | 256 | unsigned long uninitialized_var(flags); |
23579a2a | 257 | |
22cdd6ce | 258 | if ((io_32bit & 2) && !mmio) { |
1da177e4 | 259 | local_irq_save(flags); |
22cdd6ce | 260 | ata_vlb_sync(io_ports->nsect_addr); |
16bb69c1 BZ |
261 | } |
262 | ||
263 | if (mmio) | |
264 | __ide_mm_insl((void __iomem *)data_addr, buf, len / 4); | |
265 | else | |
266 | insl(data_addr, buf, len / 4); | |
267 | ||
22cdd6ce | 268 | if ((io_32bit & 2) && !mmio) |
1da177e4 | 269 | local_irq_restore(flags); |
9567b349 | 270 | |
16bb69c1 BZ |
271 | if ((len & 3) >= 2) { |
272 | if (mmio) | |
273 | __ide_mm_insw((void __iomem *)data_addr, | |
274 | (u8 *)buf + (len & ~3), 1); | |
275 | else | |
276 | insw(data_addr, (u8 *)buf + (len & ~3), 1); | |
277 | } | |
278 | } else { | |
279 | if (mmio) | |
280 | __ide_mm_insw((void __iomem *)data_addr, buf, len / 2); | |
281 | else | |
282 | insw(data_addr, buf, len / 2); | |
283 | } | |
1da177e4 LT |
284 | } |
285 | ||
286 | /* | |
287 | * This is used for most PIO data transfers *to* the IDE interface | |
288 | */ | |
92d3ab27 | 289 | static void ata_output_data(ide_drive_t *drive, struct request *rq, |
9567b349 | 290 | void *buf, unsigned int len) |
1da177e4 | 291 | { |
4c3032d8 BZ |
292 | ide_hwif_t *hwif = drive->hwif; |
293 | struct ide_io_ports *io_ports = &hwif->io_ports; | |
9567b349 | 294 | unsigned long data_addr = io_ports->data_addr; |
4c3032d8 | 295 | u8 io_32bit = drive->io_32bit; |
16bb69c1 | 296 | u8 mmio = (hwif->host_flags & IDE_HFLAG_MMIO) ? 1 : 0; |
1da177e4 LT |
297 | |
298 | if (io_32bit) { | |
16bb69c1 | 299 | unsigned long uninitialized_var(flags); |
23579a2a | 300 | |
22cdd6ce | 301 | if ((io_32bit & 2) && !mmio) { |
1da177e4 | 302 | local_irq_save(flags); |
22cdd6ce | 303 | ata_vlb_sync(io_ports->nsect_addr); |
16bb69c1 BZ |
304 | } |
305 | ||
306 | if (mmio) | |
307 | __ide_mm_outsl((void __iomem *)data_addr, buf, len / 4); | |
308 | else | |
309 | outsl(data_addr, buf, len / 4); | |
310 | ||
22cdd6ce | 311 | if ((io_32bit & 2) && !mmio) |
1da177e4 | 312 | local_irq_restore(flags); |
1da177e4 | 313 | |
16bb69c1 BZ |
314 | if ((len & 3) >= 2) { |
315 | if (mmio) | |
316 | __ide_mm_outsw((void __iomem *)data_addr, | |
317 | (u8 *)buf + (len & ~3), 1); | |
318 | else | |
319 | outsw(data_addr, (u8 *)buf + (len & ~3), 1); | |
320 | } | |
321 | } else { | |
322 | if (mmio) | |
323 | __ide_mm_outsw((void __iomem *)data_addr, buf, len / 2); | |
324 | else | |
325 | outsw(data_addr, buf, len / 2); | |
326 | } | |
1da177e4 LT |
327 | } |
328 | ||
329 | void default_hwif_transport(ide_hwif_t *hwif) | |
330 | { | |
94cd5b62 BZ |
331 | hwif->tf_load = ide_tf_load; |
332 | hwif->tf_read = ide_tf_read; | |
333 | ||
9567b349 BZ |
334 | hwif->input_data = ata_input_data; |
335 | hwif->output_data = ata_output_data; | |
1da177e4 LT |
336 | } |
337 | ||
1da177e4 LT |
338 | void ide_fix_driveid (struct hd_driveid *id) |
339 | { | |
340 | #ifndef __LITTLE_ENDIAN | |
341 | # ifdef __BIG_ENDIAN | |
342 | int i; | |
343 | u16 *stringcast; | |
344 | ||
345 | id->config = __le16_to_cpu(id->config); | |
346 | id->cyls = __le16_to_cpu(id->cyls); | |
347 | id->reserved2 = __le16_to_cpu(id->reserved2); | |
348 | id->heads = __le16_to_cpu(id->heads); | |
349 | id->track_bytes = __le16_to_cpu(id->track_bytes); | |
350 | id->sector_bytes = __le16_to_cpu(id->sector_bytes); | |
351 | id->sectors = __le16_to_cpu(id->sectors); | |
352 | id->vendor0 = __le16_to_cpu(id->vendor0); | |
353 | id->vendor1 = __le16_to_cpu(id->vendor1); | |
354 | id->vendor2 = __le16_to_cpu(id->vendor2); | |
355 | stringcast = (u16 *)&id->serial_no[0]; | |
356 | for (i = 0; i < (20/2); i++) | |
357 | stringcast[i] = __le16_to_cpu(stringcast[i]); | |
358 | id->buf_type = __le16_to_cpu(id->buf_type); | |
359 | id->buf_size = __le16_to_cpu(id->buf_size); | |
360 | id->ecc_bytes = __le16_to_cpu(id->ecc_bytes); | |
361 | stringcast = (u16 *)&id->fw_rev[0]; | |
362 | for (i = 0; i < (8/2); i++) | |
363 | stringcast[i] = __le16_to_cpu(stringcast[i]); | |
364 | stringcast = (u16 *)&id->model[0]; | |
365 | for (i = 0; i < (40/2); i++) | |
366 | stringcast[i] = __le16_to_cpu(stringcast[i]); | |
367 | id->dword_io = __le16_to_cpu(id->dword_io); | |
368 | id->reserved50 = __le16_to_cpu(id->reserved50); | |
369 | id->field_valid = __le16_to_cpu(id->field_valid); | |
370 | id->cur_cyls = __le16_to_cpu(id->cur_cyls); | |
371 | id->cur_heads = __le16_to_cpu(id->cur_heads); | |
372 | id->cur_sectors = __le16_to_cpu(id->cur_sectors); | |
373 | id->cur_capacity0 = __le16_to_cpu(id->cur_capacity0); | |
374 | id->cur_capacity1 = __le16_to_cpu(id->cur_capacity1); | |
375 | id->lba_capacity = __le32_to_cpu(id->lba_capacity); | |
376 | id->dma_1word = __le16_to_cpu(id->dma_1word); | |
377 | id->dma_mword = __le16_to_cpu(id->dma_mword); | |
378 | id->eide_pio_modes = __le16_to_cpu(id->eide_pio_modes); | |
379 | id->eide_dma_min = __le16_to_cpu(id->eide_dma_min); | |
380 | id->eide_dma_time = __le16_to_cpu(id->eide_dma_time); | |
381 | id->eide_pio = __le16_to_cpu(id->eide_pio); | |
382 | id->eide_pio_iordy = __le16_to_cpu(id->eide_pio_iordy); | |
383 | for (i = 0; i < 2; ++i) | |
384 | id->words69_70[i] = __le16_to_cpu(id->words69_70[i]); | |
385 | for (i = 0; i < 4; ++i) | |
386 | id->words71_74[i] = __le16_to_cpu(id->words71_74[i]); | |
387 | id->queue_depth = __le16_to_cpu(id->queue_depth); | |
388 | for (i = 0; i < 4; ++i) | |
389 | id->words76_79[i] = __le16_to_cpu(id->words76_79[i]); | |
390 | id->major_rev_num = __le16_to_cpu(id->major_rev_num); | |
391 | id->minor_rev_num = __le16_to_cpu(id->minor_rev_num); | |
392 | id->command_set_1 = __le16_to_cpu(id->command_set_1); | |
393 | id->command_set_2 = __le16_to_cpu(id->command_set_2); | |
394 | id->cfsse = __le16_to_cpu(id->cfsse); | |
395 | id->cfs_enable_1 = __le16_to_cpu(id->cfs_enable_1); | |
396 | id->cfs_enable_2 = __le16_to_cpu(id->cfs_enable_2); | |
397 | id->csf_default = __le16_to_cpu(id->csf_default); | |
398 | id->dma_ultra = __le16_to_cpu(id->dma_ultra); | |
399 | id->trseuc = __le16_to_cpu(id->trseuc); | |
400 | id->trsEuc = __le16_to_cpu(id->trsEuc); | |
401 | id->CurAPMvalues = __le16_to_cpu(id->CurAPMvalues); | |
402 | id->mprc = __le16_to_cpu(id->mprc); | |
403 | id->hw_config = __le16_to_cpu(id->hw_config); | |
404 | id->acoustic = __le16_to_cpu(id->acoustic); | |
405 | id->msrqs = __le16_to_cpu(id->msrqs); | |
406 | id->sxfert = __le16_to_cpu(id->sxfert); | |
407 | id->sal = __le16_to_cpu(id->sal); | |
408 | id->spg = __le32_to_cpu(id->spg); | |
409 | id->lba_capacity_2 = __le64_to_cpu(id->lba_capacity_2); | |
410 | for (i = 0; i < 22; i++) | |
411 | id->words104_125[i] = __le16_to_cpu(id->words104_125[i]); | |
412 | id->last_lun = __le16_to_cpu(id->last_lun); | |
413 | id->word127 = __le16_to_cpu(id->word127); | |
414 | id->dlf = __le16_to_cpu(id->dlf); | |
415 | id->csfo = __le16_to_cpu(id->csfo); | |
416 | for (i = 0; i < 26; i++) | |
417 | id->words130_155[i] = __le16_to_cpu(id->words130_155[i]); | |
418 | id->word156 = __le16_to_cpu(id->word156); | |
419 | for (i = 0; i < 3; i++) | |
420 | id->words157_159[i] = __le16_to_cpu(id->words157_159[i]); | |
421 | id->cfa_power = __le16_to_cpu(id->cfa_power); | |
422 | for (i = 0; i < 14; i++) | |
423 | id->words161_175[i] = __le16_to_cpu(id->words161_175[i]); | |
424 | for (i = 0; i < 31; i++) | |
425 | id->words176_205[i] = __le16_to_cpu(id->words176_205[i]); | |
426 | for (i = 0; i < 48; i++) | |
427 | id->words206_254[i] = __le16_to_cpu(id->words206_254[i]); | |
428 | id->integrity_word = __le16_to_cpu(id->integrity_word); | |
429 | # else | |
430 | # error "Please fix <asm/byteorder.h>" | |
431 | # endif | |
432 | #endif | |
433 | } | |
434 | ||
01745112 BZ |
435 | /* |
436 | * ide_fixstring() cleans up and (optionally) byte-swaps a text string, | |
437 | * removing leading/trailing blanks and compressing internal blanks. | |
438 | * It is primarily used to tidy up the model name/number fields as | |
439 | * returned by the WIN_[P]IDENTIFY commands. | |
440 | */ | |
441 | ||
1da177e4 LT |
442 | void ide_fixstring (u8 *s, const int bytecount, const int byteswap) |
443 | { | |
444 | u8 *p = s, *end = &s[bytecount & ~1]; /* bytecount must be even */ | |
445 | ||
446 | if (byteswap) { | |
447 | /* convert from big-endian to host byte order */ | |
448 | for (p = end ; p != s;) { | |
449 | unsigned short *pp = (unsigned short *) (p -= 2); | |
450 | *pp = ntohs(*pp); | |
451 | } | |
452 | } | |
453 | /* strip leading blanks */ | |
454 | while (s != end && *s == ' ') | |
455 | ++s; | |
456 | /* compress internal blanks and strip trailing blanks */ | |
457 | while (s != end && *s) { | |
458 | if (*s++ != ' ' || (s != end && *s && *s != ' ')) | |
459 | *p++ = *(s-1); | |
460 | } | |
461 | /* wipe out trailing garbage */ | |
462 | while (p != end) | |
463 | *p++ = '\0'; | |
464 | } | |
465 | ||
466 | EXPORT_SYMBOL(ide_fixstring); | |
467 | ||
468 | /* | |
469 | * Needed for PCI irq sharing | |
470 | */ | |
471 | int drive_is_ready (ide_drive_t *drive) | |
472 | { | |
473 | ide_hwif_t *hwif = HWIF(drive); | |
474 | u8 stat = 0; | |
475 | ||
476 | if (drive->waiting_for_dma) | |
5e37bdc0 | 477 | return hwif->dma_ops->dma_test_irq(drive); |
1da177e4 LT |
478 | |
479 | #if 0 | |
480 | /* need to guarantee 400ns since last command was issued */ | |
481 | udelay(1); | |
482 | #endif | |
483 | ||
1da177e4 LT |
484 | /* |
485 | * We do a passive status test under shared PCI interrupts on | |
486 | * cards that truly share the ATA side interrupt, but may also share | |
487 | * an interrupt with another pci card/device. We make no assumptions | |
488 | * about possible isa-pnp and pci-pnp issues yet. | |
489 | */ | |
4c3032d8 | 490 | if (hwif->io_ports.ctl_addr) |
c47137a9 | 491 | stat = ide_read_altstatus(drive); |
1da177e4 | 492 | else |
1da177e4 | 493 | /* Note: this may clear a pending IRQ!! */ |
c47137a9 | 494 | stat = ide_read_status(drive); |
1da177e4 LT |
495 | |
496 | if (stat & BUSY_STAT) | |
497 | /* drive busy: definitely not interrupting */ | |
498 | return 0; | |
499 | ||
500 | /* drive ready: *might* be interrupting */ | |
501 | return 1; | |
502 | } | |
503 | ||
504 | EXPORT_SYMBOL(drive_is_ready); | |
505 | ||
1da177e4 LT |
506 | /* |
507 | * This routine busy-waits for the drive status to be not "busy". | |
508 | * It then checks the status for all of the "good" bits and none | |
509 | * of the "bad" bits, and if all is okay it returns 0. All other | |
74af21cf | 510 | * cases return error -- caller may then invoke ide_error(). |
1da177e4 LT |
511 | * |
512 | * This routine should get fixed to not hog the cpu during extra long waits.. | |
513 | * That could be done by busy-waiting for the first jiffy or two, and then | |
514 | * setting a timer to wake up at half second intervals thereafter, | |
515 | * until timeout is achieved, before timing out. | |
516 | */ | |
aedea591 | 517 | static int __ide_wait_stat(ide_drive_t *drive, u8 good, u8 bad, unsigned long timeout, u8 *rstat) |
1da177e4 | 518 | { |
1da177e4 | 519 | unsigned long flags; |
74af21cf BZ |
520 | int i; |
521 | u8 stat; | |
1da177e4 LT |
522 | |
523 | udelay(1); /* spec allows drive 400ns to assert "BUSY" */ | |
c47137a9 BZ |
524 | stat = ide_read_status(drive); |
525 | ||
526 | if (stat & BUSY_STAT) { | |
1da177e4 LT |
527 | local_irq_set(flags); |
528 | timeout += jiffies; | |
c47137a9 | 529 | while ((stat = ide_read_status(drive)) & BUSY_STAT) { |
1da177e4 LT |
530 | if (time_after(jiffies, timeout)) { |
531 | /* | |
532 | * One last read after the timeout in case | |
533 | * heavy interrupt load made us not make any | |
534 | * progress during the timeout.. | |
535 | */ | |
c47137a9 | 536 | stat = ide_read_status(drive); |
1da177e4 LT |
537 | if (!(stat & BUSY_STAT)) |
538 | break; | |
539 | ||
540 | local_irq_restore(flags); | |
74af21cf BZ |
541 | *rstat = stat; |
542 | return -EBUSY; | |
1da177e4 LT |
543 | } |
544 | } | |
545 | local_irq_restore(flags); | |
546 | } | |
547 | /* | |
548 | * Allow status to settle, then read it again. | |
549 | * A few rare drives vastly violate the 400ns spec here, | |
550 | * so we'll wait up to 10usec for a "good" status | |
551 | * rather than expensively fail things immediately. | |
552 | * This fix courtesy of Matthew Faupel & Niccolo Rigacci. | |
553 | */ | |
554 | for (i = 0; i < 10; i++) { | |
555 | udelay(1); | |
c47137a9 BZ |
556 | stat = ide_read_status(drive); |
557 | ||
558 | if (OK_STAT(stat, good, bad)) { | |
74af21cf | 559 | *rstat = stat; |
1da177e4 | 560 | return 0; |
74af21cf | 561 | } |
1da177e4 | 562 | } |
74af21cf BZ |
563 | *rstat = stat; |
564 | return -EFAULT; | |
565 | } | |
566 | ||
567 | /* | |
568 | * In case of error returns error value after doing "*startstop = ide_error()". | |
569 | * The caller should return the updated value of "startstop" in this case, | |
570 | * "startstop" is unchanged when the function returns 0. | |
571 | */ | |
572 | int ide_wait_stat(ide_startstop_t *startstop, ide_drive_t *drive, u8 good, u8 bad, unsigned long timeout) | |
573 | { | |
574 | int err; | |
575 | u8 stat; | |
576 | ||
577 | /* bail early if we've exceeded max_failures */ | |
578 | if (drive->max_failures && (drive->failures > drive->max_failures)) { | |
579 | *startstop = ide_stopped; | |
580 | return 1; | |
581 | } | |
582 | ||
583 | err = __ide_wait_stat(drive, good, bad, timeout, &stat); | |
584 | ||
585 | if (err) { | |
586 | char *s = (err == -EBUSY) ? "status timeout" : "status error"; | |
587 | *startstop = ide_error(drive, s, stat); | |
588 | } | |
589 | ||
590 | return err; | |
1da177e4 LT |
591 | } |
592 | ||
593 | EXPORT_SYMBOL(ide_wait_stat); | |
594 | ||
a5b7e70d BZ |
595 | /** |
596 | * ide_in_drive_list - look for drive in black/white list | |
597 | * @id: drive identifier | |
598 | * @drive_table: list to inspect | |
599 | * | |
600 | * Look for a drive in the blacklist and the whitelist tables | |
601 | * Returns 1 if the drive is found in the table. | |
602 | */ | |
603 | ||
604 | int ide_in_drive_list(struct hd_driveid *id, const struct drive_list_entry *drive_table) | |
605 | { | |
606 | for ( ; drive_table->id_model; drive_table++) | |
607 | if ((!strcmp(drive_table->id_model, id->model)) && | |
608 | (!drive_table->id_firmware || | |
609 | strstr(id->fw_rev, drive_table->id_firmware))) | |
610 | return 1; | |
611 | return 0; | |
612 | } | |
613 | ||
b0244a00 BZ |
614 | EXPORT_SYMBOL_GPL(ide_in_drive_list); |
615 | ||
a5b7e70d BZ |
616 | /* |
617 | * Early UDMA66 devices don't set bit14 to 1, only bit13 is valid. | |
618 | * We list them here and depend on the device side cable detection for them. | |
8588a2b7 BZ |
619 | * |
620 | * Some optical devices with the buggy firmwares have the same problem. | |
a5b7e70d BZ |
621 | */ |
622 | static const struct drive_list_entry ivb_list[] = { | |
623 | { "QUANTUM FIREBALLlct10 05" , "A03.0900" }, | |
8588a2b7 | 624 | { "TSSTcorp CDDVDW SH-S202J" , "SB00" }, |
e97564f3 PM |
625 | { "TSSTcorp CDDVDW SH-S202J" , "SB01" }, |
626 | { "TSSTcorp CDDVDW SH-S202N" , "SB00" }, | |
627 | { "TSSTcorp CDDVDW SH-S202N" , "SB01" }, | |
3ced5c49 AS |
628 | { "TSSTcorp CDDVDW SH-S202H" , "SB00" }, |
629 | { "TSSTcorp CDDVDW SH-S202H" , "SB01" }, | |
a5b7e70d BZ |
630 | { NULL , NULL } |
631 | }; | |
632 | ||
1da177e4 LT |
633 | /* |
634 | * All hosts that use the 80c ribbon must use! | |
635 | * The name is derived from upper byte of word 93 and the 80c ribbon. | |
636 | */ | |
637 | u8 eighty_ninty_three (ide_drive_t *drive) | |
638 | { | |
7f8f48af BZ |
639 | ide_hwif_t *hwif = drive->hwif; |
640 | struct hd_driveid *id = drive->id; | |
a5b7e70d | 641 | int ivb = ide_in_drive_list(id, ivb_list); |
7f8f48af | 642 | |
49521f97 BZ |
643 | if (hwif->cbl == ATA_CBL_PATA40_SHORT) |
644 | return 1; | |
645 | ||
a5b7e70d BZ |
646 | if (ivb) |
647 | printk(KERN_DEBUG "%s: skipping word 93 validity check\n", | |
648 | drive->name); | |
649 | ||
b98f8803 GK |
650 | if (ide_dev_is_sata(id) && !ivb) |
651 | return 1; | |
652 | ||
a5b7e70d | 653 | if (hwif->cbl != ATA_CBL_PATA80 && !ivb) |
7f8f48af | 654 | goto no_80w; |
1a1276e7 | 655 | |
f68d9320 BZ |
656 | /* |
657 | * FIXME: | |
f367bed0 | 658 | * - change master/slave IDENTIFY order |
a5b7e70d | 659 | * - force bit13 (80c cable present) check also for !ivb devices |
f68d9320 BZ |
660 | * (unless the slave device is pre-ATA3) |
661 | */ | |
a5b7e70d | 662 | if ((id->hw_config & 0x4000) || (ivb && (id->hw_config & 0x2000))) |
7f8f48af BZ |
663 | return 1; |
664 | ||
665 | no_80w: | |
666 | if (drive->udma33_warned == 1) | |
667 | return 0; | |
668 | ||
669 | printk(KERN_WARNING "%s: %s side 80-wire cable detection failed, " | |
670 | "limiting max speed to UDMA33\n", | |
49521f97 BZ |
671 | drive->name, |
672 | hwif->cbl == ATA_CBL_PATA80 ? "drive" : "host"); | |
7f8f48af BZ |
673 | |
674 | drive->udma33_warned = 1; | |
675 | ||
676 | return 0; | |
1da177e4 LT |
677 | } |
678 | ||
8a455134 | 679 | int ide_driveid_update(ide_drive_t *drive) |
1da177e4 | 680 | { |
8a455134 | 681 | ide_hwif_t *hwif = drive->hwif; |
1da177e4 | 682 | struct hd_driveid *id; |
8a455134 | 683 | unsigned long timeout, flags; |
c47137a9 | 684 | u8 stat; |
1da177e4 | 685 | |
1da177e4 LT |
686 | /* |
687 | * Re-read drive->id for possible DMA mode | |
688 | * change (copied from ide-probe.c) | |
689 | */ | |
1da177e4 LT |
690 | |
691 | SELECT_MASK(drive, 1); | |
81ca6919 | 692 | ide_set_irq(drive, 1); |
1da177e4 | 693 | msleep(50); |
32b3fe4f | 694 | hwif->OUTBSYNC(drive, WIN_IDENTIFY, hwif->io_ports.command_addr); |
1da177e4 LT |
695 | timeout = jiffies + WAIT_WORSTCASE; |
696 | do { | |
697 | if (time_after(jiffies, timeout)) { | |
698 | SELECT_MASK(drive, 0); | |
699 | return 0; /* drive timed-out */ | |
700 | } | |
c47137a9 | 701 | |
1da177e4 | 702 | msleep(50); /* give drive a breather */ |
c47137a9 BZ |
703 | stat = ide_read_altstatus(drive); |
704 | } while (stat & BUSY_STAT); | |
705 | ||
1da177e4 | 706 | msleep(50); /* wait for IRQ and DRQ_STAT */ |
c47137a9 BZ |
707 | stat = ide_read_status(drive); |
708 | ||
709 | if (!OK_STAT(stat, DRQ_STAT, BAD_R_STAT)) { | |
1da177e4 LT |
710 | SELECT_MASK(drive, 0); |
711 | printk("%s: CHECK for good STATUS\n", drive->name); | |
712 | return 0; | |
713 | } | |
714 | local_irq_save(flags); | |
715 | SELECT_MASK(drive, 0); | |
716 | id = kmalloc(SECTOR_WORDS*4, GFP_ATOMIC); | |
717 | if (!id) { | |
718 | local_irq_restore(flags); | |
719 | return 0; | |
720 | } | |
9567b349 | 721 | hwif->input_data(drive, NULL, id, SECTOR_SIZE); |
c47137a9 | 722 | (void)ide_read_status(drive); /* clear drive IRQ */ |
1da177e4 LT |
723 | local_irq_enable(); |
724 | local_irq_restore(flags); | |
725 | ide_fix_driveid(id); | |
726 | if (id) { | |
727 | drive->id->dma_ultra = id->dma_ultra; | |
728 | drive->id->dma_mword = id->dma_mword; | |
729 | drive->id->dma_1word = id->dma_1word; | |
730 | /* anything more ? */ | |
731 | kfree(id); | |
3ab7efe8 BZ |
732 | |
733 | if (drive->using_dma && ide_id_dma_bug(drive)) | |
734 | ide_dma_off(drive); | |
1da177e4 LT |
735 | } |
736 | ||
737 | return 1; | |
1da177e4 LT |
738 | } |
739 | ||
74af21cf | 740 | int ide_config_drive_speed(ide_drive_t *drive, u8 speed) |
1da177e4 | 741 | { |
74af21cf | 742 | ide_hwif_t *hwif = drive->hwif; |
4c3032d8 | 743 | struct ide_io_ports *io_ports = &hwif->io_ports; |
89613e66 | 744 | int error = 0; |
1da177e4 LT |
745 | u8 stat; |
746 | ||
747 | // while (HWGROUP(drive)->busy) | |
748 | // msleep(50); | |
749 | ||
750 | #ifdef CONFIG_BLK_DEV_IDEDMA | |
5e37bdc0 BZ |
751 | if (hwif->dma_ops) /* check if host supports DMA */ |
752 | hwif->dma_ops->dma_host_set(drive, 0); | |
1da177e4 LT |
753 | #endif |
754 | ||
89613e66 SS |
755 | /* Skip setting PIO flow-control modes on pre-EIDE drives */ |
756 | if ((speed & 0xf8) == XFER_PIO_0 && !(drive->id->capability & 0x08)) | |
757 | goto skip; | |
758 | ||
1da177e4 LT |
759 | /* |
760 | * Don't use ide_wait_cmd here - it will | |
761 | * attempt to set_geometry and recalibrate, | |
762 | * but for some reason these don't work at | |
763 | * this point (lost interrupt). | |
764 | */ | |
765 | /* | |
766 | * Select the drive, and issue the SETFEATURES command | |
767 | */ | |
768 | disable_irq_nosync(hwif->irq); | |
769 | ||
770 | /* | |
771 | * FIXME: we race against the running IRQ here if | |
772 | * this is called from non IRQ context. If we use | |
773 | * disable_irq() we hang on the error path. Work | |
774 | * is needed. | |
775 | */ | |
776 | ||
777 | udelay(1); | |
778 | SELECT_DRIVE(drive); | |
779 | SELECT_MASK(drive, 0); | |
780 | udelay(1); | |
81ca6919 | 781 | ide_set_irq(drive, 0); |
4c3032d8 BZ |
782 | hwif->OUTB(speed, io_ports->nsect_addr); |
783 | hwif->OUTB(SETFEATURES_XFER, io_ports->feature_addr); | |
784 | hwif->OUTBSYNC(drive, WIN_SETFEATURES, io_ports->command_addr); | |
81ca6919 BZ |
785 | if (drive->quirk_list == 2) |
786 | ide_set_irq(drive, 1); | |
1da177e4 | 787 | |
74af21cf BZ |
788 | error = __ide_wait_stat(drive, drive->ready_stat, |
789 | BUSY_STAT|DRQ_STAT|ERR_STAT, | |
790 | WAIT_CMD, &stat); | |
1da177e4 LT |
791 | |
792 | SELECT_MASK(drive, 0); | |
793 | ||
794 | enable_irq(hwif->irq); | |
795 | ||
796 | if (error) { | |
797 | (void) ide_dump_status(drive, "set_drive_speed_status", stat); | |
798 | return error; | |
799 | } | |
800 | ||
801 | drive->id->dma_ultra &= ~0xFF00; | |
802 | drive->id->dma_mword &= ~0x0F00; | |
803 | drive->id->dma_1word &= ~0x0F00; | |
804 | ||
89613e66 | 805 | skip: |
1da177e4 | 806 | #ifdef CONFIG_BLK_DEV_IDEDMA |
f37aaf9e BZ |
807 | if ((speed >= XFER_SW_DMA_0 || (hwif->host_flags & IDE_HFLAG_VDMA)) && |
808 | drive->using_dma) | |
5e37bdc0 BZ |
809 | hwif->dma_ops->dma_host_set(drive, 1); |
810 | else if (hwif->dma_ops) /* check if host supports DMA */ | |
4a546e04 | 811 | ide_dma_off_quietly(drive); |
1da177e4 LT |
812 | #endif |
813 | ||
814 | switch(speed) { | |
815 | case XFER_UDMA_7: drive->id->dma_ultra |= 0x8080; break; | |
816 | case XFER_UDMA_6: drive->id->dma_ultra |= 0x4040; break; | |
817 | case XFER_UDMA_5: drive->id->dma_ultra |= 0x2020; break; | |
818 | case XFER_UDMA_4: drive->id->dma_ultra |= 0x1010; break; | |
819 | case XFER_UDMA_3: drive->id->dma_ultra |= 0x0808; break; | |
820 | case XFER_UDMA_2: drive->id->dma_ultra |= 0x0404; break; | |
821 | case XFER_UDMA_1: drive->id->dma_ultra |= 0x0202; break; | |
822 | case XFER_UDMA_0: drive->id->dma_ultra |= 0x0101; break; | |
823 | case XFER_MW_DMA_2: drive->id->dma_mword |= 0x0404; break; | |
824 | case XFER_MW_DMA_1: drive->id->dma_mword |= 0x0202; break; | |
825 | case XFER_MW_DMA_0: drive->id->dma_mword |= 0x0101; break; | |
826 | case XFER_SW_DMA_2: drive->id->dma_1word |= 0x0404; break; | |
827 | case XFER_SW_DMA_1: drive->id->dma_1word |= 0x0202; break; | |
828 | case XFER_SW_DMA_0: drive->id->dma_1word |= 0x0101; break; | |
829 | default: break; | |
830 | } | |
831 | if (!drive->init_speed) | |
832 | drive->init_speed = speed; | |
833 | drive->current_speed = speed; | |
834 | return error; | |
835 | } | |
836 | ||
1da177e4 LT |
837 | /* |
838 | * This should get invoked any time we exit the driver to | |
839 | * wait for an interrupt response from a drive. handler() points | |
840 | * at the appropriate code to handle the next interrupt, and a | |
841 | * timer is started to prevent us from waiting forever in case | |
842 | * something goes wrong (see the ide_timer_expiry() handler later on). | |
843 | * | |
844 | * See also ide_execute_command | |
845 | */ | |
846 | static void __ide_set_handler (ide_drive_t *drive, ide_handler_t *handler, | |
847 | unsigned int timeout, ide_expiry_t *expiry) | |
848 | { | |
849 | ide_hwgroup_t *hwgroup = HWGROUP(drive); | |
850 | ||
d30a426d | 851 | BUG_ON(hwgroup->handler); |
1da177e4 LT |
852 | hwgroup->handler = handler; |
853 | hwgroup->expiry = expiry; | |
854 | hwgroup->timer.expires = jiffies + timeout; | |
d30a426d | 855 | hwgroup->req_gen_timer = hwgroup->req_gen; |
1da177e4 LT |
856 | add_timer(&hwgroup->timer); |
857 | } | |
858 | ||
859 | void ide_set_handler (ide_drive_t *drive, ide_handler_t *handler, | |
860 | unsigned int timeout, ide_expiry_t *expiry) | |
861 | { | |
862 | unsigned long flags; | |
863 | spin_lock_irqsave(&ide_lock, flags); | |
864 | __ide_set_handler(drive, handler, timeout, expiry); | |
865 | spin_unlock_irqrestore(&ide_lock, flags); | |
866 | } | |
867 | ||
868 | EXPORT_SYMBOL(ide_set_handler); | |
869 | ||
870 | /** | |
871 | * ide_execute_command - execute an IDE command | |
872 | * @drive: IDE drive to issue the command against | |
873 | * @command: command byte to write | |
874 | * @handler: handler for next phase | |
875 | * @timeout: timeout for command | |
876 | * @expiry: handler to run on timeout | |
877 | * | |
878 | * Helper function to issue an IDE command. This handles the | |
879 | * atomicity requirements, command timing and ensures that the | |
880 | * handler and IRQ setup do not race. All IDE command kick off | |
881 | * should go via this function or do equivalent locking. | |
882 | */ | |
cd2a2d96 BZ |
883 | |
884 | void ide_execute_command(ide_drive_t *drive, u8 cmd, ide_handler_t *handler, | |
885 | unsigned timeout, ide_expiry_t *expiry) | |
1da177e4 LT |
886 | { |
887 | unsigned long flags; | |
1da177e4 | 888 | ide_hwif_t *hwif = HWIF(drive); |
629f944b | 889 | |
1da177e4 | 890 | spin_lock_irqsave(&ide_lock, flags); |
629f944b | 891 | __ide_set_handler(drive, handler, timeout, expiry); |
4c3032d8 | 892 | hwif->OUTBSYNC(drive, cmd, hwif->io_ports.command_addr); |
629f944b BZ |
893 | /* |
894 | * Drive takes 400nS to respond, we must avoid the IRQ being | |
895 | * serviced before that. | |
896 | * | |
897 | * FIXME: we could skip this delay with care on non shared devices | |
898 | */ | |
1da177e4 LT |
899 | ndelay(400); |
900 | spin_unlock_irqrestore(&ide_lock, flags); | |
901 | } | |
1da177e4 LT |
902 | EXPORT_SYMBOL(ide_execute_command); |
903 | ||
1fc14258 BZ |
904 | void ide_execute_pkt_cmd(ide_drive_t *drive) |
905 | { | |
906 | ide_hwif_t *hwif = drive->hwif; | |
907 | unsigned long flags; | |
908 | ||
909 | spin_lock_irqsave(&ide_lock, flags); | |
910 | hwif->OUTBSYNC(drive, WIN_PACKETCMD, hwif->io_ports.command_addr); | |
911 | ndelay(400); | |
912 | spin_unlock_irqrestore(&ide_lock, flags); | |
913 | } | |
914 | EXPORT_SYMBOL_GPL(ide_execute_pkt_cmd); | |
1da177e4 LT |
915 | |
916 | /* needed below */ | |
917 | static ide_startstop_t do_reset1 (ide_drive_t *, int); | |
918 | ||
919 | /* | |
920 | * atapi_reset_pollfunc() gets invoked to poll the interface for completion every 50ms | |
921 | * during an atapi drive reset operation. If the drive has not yet responded, | |
922 | * and we have not yet hit our maximum waiting time, then the timer is restarted | |
923 | * for another 50ms. | |
924 | */ | |
925 | static ide_startstop_t atapi_reset_pollfunc (ide_drive_t *drive) | |
926 | { | |
927 | ide_hwgroup_t *hwgroup = HWGROUP(drive); | |
1da177e4 LT |
928 | u8 stat; |
929 | ||
930 | SELECT_DRIVE(drive); | |
931 | udelay (10); | |
c47137a9 | 932 | stat = ide_read_status(drive); |
1da177e4 | 933 | |
c47137a9 | 934 | if (OK_STAT(stat, 0, BUSY_STAT)) |
1da177e4 | 935 | printk("%s: ATAPI reset complete\n", drive->name); |
c47137a9 | 936 | else { |
1da177e4 | 937 | if (time_before(jiffies, hwgroup->poll_timeout)) { |
1da177e4 LT |
938 | ide_set_handler(drive, &atapi_reset_pollfunc, HZ/20, NULL); |
939 | /* continue polling */ | |
940 | return ide_started; | |
941 | } | |
942 | /* end of polling */ | |
943 | hwgroup->polling = 0; | |
944 | printk("%s: ATAPI reset timed-out, status=0x%02x\n", | |
945 | drive->name, stat); | |
946 | /* do it the old fashioned way */ | |
947 | return do_reset1(drive, 1); | |
948 | } | |
949 | /* done polling */ | |
950 | hwgroup->polling = 0; | |
913759ac | 951 | hwgroup->resetting = 0; |
1da177e4 LT |
952 | return ide_stopped; |
953 | } | |
954 | ||
955 | /* | |
956 | * reset_pollfunc() gets invoked to poll the interface for completion every 50ms | |
957 | * during an ide reset operation. If the drives have not yet responded, | |
958 | * and we have not yet hit our maximum waiting time, then the timer is restarted | |
959 | * for another 50ms. | |
960 | */ | |
961 | static ide_startstop_t reset_pollfunc (ide_drive_t *drive) | |
962 | { | |
963 | ide_hwgroup_t *hwgroup = HWGROUP(drive); | |
964 | ide_hwif_t *hwif = HWIF(drive); | |
ac95beed | 965 | const struct ide_port_ops *port_ops = hwif->port_ops; |
1da177e4 LT |
966 | u8 tmp; |
967 | ||
ac95beed BZ |
968 | if (port_ops && port_ops->reset_poll) { |
969 | if (port_ops->reset_poll(drive)) { | |
1da177e4 LT |
970 | printk(KERN_ERR "%s: host reset_poll failure for %s.\n", |
971 | hwif->name, drive->name); | |
972 | return ide_stopped; | |
973 | } | |
974 | } | |
975 | ||
c47137a9 BZ |
976 | tmp = ide_read_status(drive); |
977 | ||
978 | if (!OK_STAT(tmp, 0, BUSY_STAT)) { | |
1da177e4 | 979 | if (time_before(jiffies, hwgroup->poll_timeout)) { |
1da177e4 LT |
980 | ide_set_handler(drive, &reset_pollfunc, HZ/20, NULL); |
981 | /* continue polling */ | |
982 | return ide_started; | |
983 | } | |
984 | printk("%s: reset timed-out, status=0x%02x\n", hwif->name, tmp); | |
985 | drive->failures++; | |
986 | } else { | |
987 | printk("%s: reset: ", hwif->name); | |
64a57fe4 BZ |
988 | tmp = ide_read_error(drive); |
989 | ||
990 | if (tmp == 1) { | |
1da177e4 LT |
991 | printk("success\n"); |
992 | drive->failures = 0; | |
993 | } else { | |
994 | drive->failures++; | |
995 | printk("master: "); | |
996 | switch (tmp & 0x7f) { | |
997 | case 1: printk("passed"); | |
998 | break; | |
999 | case 2: printk("formatter device error"); | |
1000 | break; | |
1001 | case 3: printk("sector buffer error"); | |
1002 | break; | |
1003 | case 4: printk("ECC circuitry error"); | |
1004 | break; | |
1005 | case 5: printk("controlling MPU error"); | |
1006 | break; | |
1007 | default:printk("error (0x%02x?)", tmp); | |
1008 | } | |
1009 | if (tmp & 0x80) | |
1010 | printk("; slave: failed"); | |
1011 | printk("\n"); | |
1012 | } | |
1013 | } | |
1014 | hwgroup->polling = 0; /* done polling */ | |
913759ac | 1015 | hwgroup->resetting = 0; /* done reset attempt */ |
1da177e4 LT |
1016 | return ide_stopped; |
1017 | } | |
1018 | ||
1da177e4 LT |
1019 | static void ide_disk_pre_reset(ide_drive_t *drive) |
1020 | { | |
1021 | int legacy = (drive->id->cfs_enable_2 & 0x0400) ? 0 : 1; | |
1022 | ||
1023 | drive->special.all = 0; | |
1024 | drive->special.b.set_geometry = legacy; | |
1025 | drive->special.b.recalibrate = legacy; | |
4ee06b7e | 1026 | drive->mult_count = 0; |
1da177e4 LT |
1027 | if (!drive->keep_settings && !drive->using_dma) |
1028 | drive->mult_req = 0; | |
1029 | if (drive->mult_req != drive->mult_count) | |
1030 | drive->special.b.set_multmode = 1; | |
1031 | } | |
1032 | ||
1033 | static void pre_reset(ide_drive_t *drive) | |
1034 | { | |
ac95beed BZ |
1035 | const struct ide_port_ops *port_ops = drive->hwif->port_ops; |
1036 | ||
1da177e4 LT |
1037 | if (drive->media == ide_disk) |
1038 | ide_disk_pre_reset(drive); | |
1039 | else | |
1040 | drive->post_reset = 1; | |
1041 | ||
99ffbe0e BZ |
1042 | if (drive->using_dma) { |
1043 | if (drive->crc_count) | |
578cfa0d | 1044 | ide_check_dma_crc(drive); |
99ffbe0e BZ |
1045 | else |
1046 | ide_dma_off(drive); | |
1047 | } | |
1048 | ||
1049 | if (!drive->keep_settings) { | |
1050 | if (!drive->using_dma) { | |
1da177e4 LT |
1051 | drive->unmask = 0; |
1052 | drive->io_32bit = 0; | |
1053 | } | |
1054 | return; | |
1055 | } | |
1da177e4 | 1056 | |
ac95beed BZ |
1057 | if (port_ops && port_ops->pre_reset) |
1058 | port_ops->pre_reset(drive); | |
1da177e4 | 1059 | |
513daadd SS |
1060 | if (drive->current_speed != 0xff) |
1061 | drive->desired_speed = drive->current_speed; | |
1062 | drive->current_speed = 0xff; | |
1da177e4 LT |
1063 | } |
1064 | ||
1065 | /* | |
1066 | * do_reset1() attempts to recover a confused drive by resetting it. | |
1067 | * Unfortunately, resetting a disk drive actually resets all devices on | |
1068 | * the same interface, so it can really be thought of as resetting the | |
1069 | * interface rather than resetting the drive. | |
1070 | * | |
1071 | * ATAPI devices have their own reset mechanism which allows them to be | |
1072 | * individually reset without clobbering other devices on the same interface. | |
1073 | * | |
1074 | * Unfortunately, the IDE interface does not generate an interrupt to let | |
1075 | * us know when the reset operation has finished, so we must poll for this. | |
1076 | * Equally poor, though, is the fact that this may a very long time to complete, | |
1077 | * (up to 30 seconds worstcase). So, instead of busy-waiting here for it, | |
1078 | * we set a timer to poll at 50ms intervals. | |
1079 | */ | |
1080 | static ide_startstop_t do_reset1 (ide_drive_t *drive, int do_not_try_atapi) | |
1081 | { | |
1082 | unsigned int unit; | |
1083 | unsigned long flags; | |
1084 | ide_hwif_t *hwif; | |
1085 | ide_hwgroup_t *hwgroup; | |
4c3032d8 | 1086 | struct ide_io_ports *io_ports; |
ac95beed | 1087 | const struct ide_port_ops *port_ops; |
23579a2a BZ |
1088 | u8 ctl; |
1089 | ||
1da177e4 LT |
1090 | spin_lock_irqsave(&ide_lock, flags); |
1091 | hwif = HWIF(drive); | |
1092 | hwgroup = HWGROUP(drive); | |
1093 | ||
4c3032d8 BZ |
1094 | io_ports = &hwif->io_ports; |
1095 | ||
1da177e4 | 1096 | /* We must not reset with running handlers */ |
125e1874 | 1097 | BUG_ON(hwgroup->handler != NULL); |
1da177e4 LT |
1098 | |
1099 | /* For an ATAPI device, first try an ATAPI SRST. */ | |
1100 | if (drive->media != ide_disk && !do_not_try_atapi) { | |
913759ac | 1101 | hwgroup->resetting = 1; |
1da177e4 LT |
1102 | pre_reset(drive); |
1103 | SELECT_DRIVE(drive); | |
1104 | udelay (20); | |
4c3032d8 | 1105 | hwif->OUTBSYNC(drive, WIN_SRST, io_ports->command_addr); |
68ad9910 | 1106 | ndelay(400); |
1da177e4 LT |
1107 | hwgroup->poll_timeout = jiffies + WAIT_WORSTCASE; |
1108 | hwgroup->polling = 1; | |
1109 | __ide_set_handler(drive, &atapi_reset_pollfunc, HZ/20, NULL); | |
1110 | spin_unlock_irqrestore(&ide_lock, flags); | |
1111 | return ide_started; | |
1112 | } | |
1113 | ||
1114 | /* | |
1115 | * First, reset any device state data we were maintaining | |
1116 | * for any of the drives on this interface. | |
1117 | */ | |
1118 | for (unit = 0; unit < MAX_DRIVES; ++unit) | |
1119 | pre_reset(&hwif->drives[unit]); | |
1120 | ||
4c3032d8 | 1121 | if (io_ports->ctl_addr == 0) { |
1da177e4 LT |
1122 | spin_unlock_irqrestore(&ide_lock, flags); |
1123 | return ide_stopped; | |
1124 | } | |
1125 | ||
913759ac | 1126 | hwgroup->resetting = 1; |
1da177e4 LT |
1127 | /* |
1128 | * Note that we also set nIEN while resetting the device, | |
1129 | * to mask unwanted interrupts from the interface during the reset. | |
1130 | * However, due to the design of PC hardware, this will cause an | |
1131 | * immediate interrupt due to the edge transition it produces. | |
1132 | * This single interrupt gives us a "fast poll" for drives that | |
1133 | * recover from reset very quickly, saving us the first 50ms wait time. | |
1134 | */ | |
1135 | /* set SRST and nIEN */ | |
4c3032d8 | 1136 | hwif->OUTBSYNC(drive, drive->ctl|6, io_ports->ctl_addr); |
1da177e4 LT |
1137 | /* more than enough time */ |
1138 | udelay(10); | |
23579a2a BZ |
1139 | if (drive->quirk_list == 2) |
1140 | ctl = drive->ctl; /* clear SRST and nIEN */ | |
1141 | else | |
1142 | ctl = drive->ctl | 2; /* clear SRST, leave nIEN */ | |
4c3032d8 | 1143 | hwif->OUTBSYNC(drive, ctl, io_ports->ctl_addr); |
1da177e4 LT |
1144 | /* more than enough time */ |
1145 | udelay(10); | |
1146 | hwgroup->poll_timeout = jiffies + WAIT_WORSTCASE; | |
1147 | hwgroup->polling = 1; | |
1148 | __ide_set_handler(drive, &reset_pollfunc, HZ/20, NULL); | |
1149 | ||
1150 | /* | |
1151 | * Some weird controller like resetting themselves to a strange | |
1152 | * state when the disks are reset this way. At least, the Winbond | |
1153 | * 553 documentation says that | |
1154 | */ | |
ac95beed BZ |
1155 | port_ops = hwif->port_ops; |
1156 | if (port_ops && port_ops->resetproc) | |
1157 | port_ops->resetproc(drive); | |
1da177e4 LT |
1158 | |
1159 | spin_unlock_irqrestore(&ide_lock, flags); | |
1160 | return ide_started; | |
1161 | } | |
1162 | ||
1163 | /* | |
1164 | * ide_do_reset() is the entry point to the drive/interface reset code. | |
1165 | */ | |
1166 | ||
1167 | ide_startstop_t ide_do_reset (ide_drive_t *drive) | |
1168 | { | |
1169 | return do_reset1(drive, 0); | |
1170 | } | |
1171 | ||
1172 | EXPORT_SYMBOL(ide_do_reset); | |
1173 | ||
1174 | /* | |
1175 | * ide_wait_not_busy() waits for the currently selected device on the hwif | |
9d501529 | 1176 | * to report a non-busy status, see comments in ide_probe_port(). |
1da177e4 LT |
1177 | */ |
1178 | int ide_wait_not_busy(ide_hwif_t *hwif, unsigned long timeout) | |
1179 | { | |
1180 | u8 stat = 0; | |
1181 | ||
1182 | while(timeout--) { | |
1183 | /* | |
1184 | * Turn this into a schedule() sleep once I'm sure | |
1185 | * about locking issues (2.5 work ?). | |
1186 | */ | |
1187 | mdelay(1); | |
4c3032d8 | 1188 | stat = hwif->INB(hwif->io_ports.status_addr); |
1da177e4 LT |
1189 | if ((stat & BUSY_STAT) == 0) |
1190 | return 0; | |
1191 | /* | |
1192 | * Assume a value of 0xff means nothing is connected to | |
1193 | * the interface and it doesn't implement the pull-down | |
1194 | * resistor on D7. | |
1195 | */ | |
1196 | if (stat == 0xff) | |
1197 | return -ENODEV; | |
6842f8c8 | 1198 | touch_softlockup_watchdog(); |
1e86240f | 1199 | touch_nmi_watchdog(); |
1da177e4 LT |
1200 | } |
1201 | return -EBUSY; | |
1202 | } | |
1203 | ||
1204 | EXPORT_SYMBOL_GPL(ide_wait_not_busy); | |
1205 |