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Merge remote-tracking branch 'remotes/stsquad/tags/pull-build-test-20160209' into...
[qemu.git] / hw / ide / core.c
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5391d806 1/*
38cdea7c 2 * QEMU IDE disk and CD/DVD-ROM Emulator
5fafdf24 3 *
5391d806 4 * Copyright (c) 2003 Fabrice Bellard
201a51fc 5 * Copyright (c) 2006 Openedhand Ltd.
5fafdf24 6 *
5391d806
FB		 7 * Permission is hereby granted, free of charge, to any person obtaining a copy
8 * of this software and associated documentation files (the "Software"), to deal
9 * in the Software without restriction, including without limitation the rights
10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
11 * copies of the Software, and to permit persons to whom the Software is
12 * furnished to do so, subject to the following conditions:
13 *
14 * The above copyright notice and this permission notice shall be included in
15 * all copies or substantial portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
23 * THE SOFTWARE.
24 */
53239262 25#include "qemu/osdep.h"
59f2a787 26#include <hw/hw.h>
0d09e41a 27#include <hw/i386/pc.h>
a2cb15b0 28#include <hw/pci/pci.h>
0d09e41a 29#include <hw/isa/isa.h>
1de7afc9
PB		 30#include "qemu/error-report.h"
31#include "qemu/timer.h"
9c17d615
PB		 32#include "sysemu/sysemu.h"
33#include "sysemu/dma.h"
0d09e41a 34#include "hw/block/block.h"
4be74634 35#include "sysemu/block-backend.h"
59f2a787
GH		 36
37#include <hw/ide/internal.h>
e8b54394 38
b93af93d
BW		 39/* These values were based on a Seagate ST3500418AS but have been modified
40 to make more sense in QEMU */
41static const int smart_attributes[][12] = {
42 /* id, flags, hflags, val, wrst, raw (6 bytes), threshold */
43 /* raw read error rate*/
44 { 0x01, 0x03, 0x00, 0x64, 0x64, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x06},
45 /* spin up */
46 { 0x03, 0x03, 0x00, 0x64, 0x64, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
47 /* start stop count */
48 { 0x04, 0x02, 0x00, 0x64, 0x64, 0x64, 0x00, 0x00, 0x00, 0x00, 0x00, 0x14},
49 /* remapped sectors */
50 { 0x05, 0x03, 0x00, 0x64, 0x64, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x24},
51 /* power on hours */
52 { 0x09, 0x03, 0x00, 0x64, 0x64, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
53 /* power cycle count */
54 { 0x0c, 0x03, 0x00, 0x64, 0x64, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
55 /* airflow-temperature-celsius */
56 { 190, 0x03, 0x00, 0x45, 0x45, 0x1f, 0x00, 0x1f, 0x1f, 0x00, 0x00, 0x32},
e8b54394
BW		 57};
58
ce4b6522 59static int ide_handle_rw_error(IDEState *s, int error, int op);
40c4ed3f 60static void ide_dummy_transfer_stop(IDEState *s);
98087450 61
5391d806
FB		 62static void padstr(char *str, const char *src, int len)
63{
64 int i, v;
65 for(i = 0; i < len; i++) {
66 if (*src)
67 v = *src++;
68 else
69 v = ' ';
69b34976 70 str[i^1] = v;
5391d806
FB		 71 }
72}
73
67b915a5
FB		 74static void put_le16(uint16_t *p, unsigned int v)
75{
0c4ad8dc 76 *p = cpu_to_le16(v);
67b915a5
FB		 77}
78
01ce352e
JS		 79static void ide_identify_size(IDEState *s)
80{
81 uint16_t *p = (uint16_t *)s->identify_data;
82 put_le16(p + 60, s->nb_sectors);
83 put_le16(p + 61, s->nb_sectors >> 16);
84 put_le16(p + 100, s->nb_sectors);
85 put_le16(p + 101, s->nb_sectors >> 16);
86 put_le16(p + 102, s->nb_sectors >> 32);
87 put_le16(p + 103, s->nb_sectors >> 48);
88}
89
5391d806
FB		 90static void ide_identify(IDEState *s)
91{
92 uint16_t *p;
93 unsigned int oldsize;
d353fb72 94 IDEDevice *dev = s->unit ? s->bus->slave : s->bus->master;
5391d806 95
4bf6637d 96 p = (uint16_t *)s->identify_data;
94458802 97 if (s->identify_set) {
4bf6637d 98 goto fill_buffer;
94458802 99 }
4bf6637d 100 memset(p, 0, sizeof(s->identify_data));
94458802 101
67b915a5 102 put_le16(p + 0, 0x0040);
5fafdf24 103 put_le16(p + 1, s->cylinders);
67b915a5
FB		 104 put_le16(p + 3, s->heads);
105 put_le16(p + 4, 512 * s->sectors); /* XXX: retired, remove ? */
106 put_le16(p + 5, 512); /* XXX: retired, remove ? */
5fafdf24 107 put_le16(p + 6, s->sectors);
fa879c64 108 padstr((char *)(p + 10), s->drive_serial_str, 20); /* serial number */
67b915a5
FB		 109 put_le16(p + 20, 3); /* XXX: retired, remove ? */
110 put_le16(p + 21, 512); /* cache size in sectors */
111 put_le16(p + 22, 4); /* ecc bytes */
47c06340 112 padstr((char *)(p + 23), s->version, 8); /* firmware version */
27e0c9a1 113 padstr((char *)(p + 27), s->drive_model_str, 40); /* model */
3b46e624 114#if MAX_MULT_SECTORS > 1
67b915a5 115 put_le16(p + 47, 0x8000 | MAX_MULT_SECTORS);
5391d806 116#endif
67b915a5 117 put_le16(p + 48, 1); /* dword I/O */
94458802 118 put_le16(p + 49, (1 << 11) | (1 << 9) | (1 << 8)); /* DMA and LBA supported */
67b915a5
FB		 119 put_le16(p + 51, 0x200); /* PIO transfer cycle */
120 put_le16(p + 52, 0x200); /* DMA transfer cycle */
94458802 121 put_le16(p + 53, 1 | (1 << 1) | (1 << 2)); /* words 54-58,64-70,88 are valid */
67b915a5
FB		 122 put_le16(p + 54, s->cylinders);
123 put_le16(p + 55, s->heads);
124 put_le16(p + 56, s->sectors);
5391d806 125 oldsize = s->cylinders * s->heads * s->sectors;
67b915a5
FB		 126 put_le16(p + 57, oldsize);
127 put_le16(p + 58, oldsize >> 16);
5391d806 128 if (s->mult_sectors)
67b915a5 129 put_le16(p + 59, 0x100 | s->mult_sectors);
01ce352e
JS		 130 /* *(p + 60) := nb_sectors -- see ide_identify_size */
131 /* *(p + 61) := nb_sectors >> 16 -- see ide_identify_size */
d1b5c20d 132 put_le16(p + 62, 0x07); /* single word dma0-2 supported */
94458802 133 put_le16(p + 63, 0x07); /* mdma0-2 supported */
79d1d331 134 put_le16(p + 64, 0x03); /* pio3-4 supported */
94458802
FB		 135 put_le16(p + 65, 120);
136 put_le16(p + 66, 120);
137 put_le16(p + 67, 120);
138 put_le16(p + 68, 120);
d353fb72
CH		 139 if (dev && dev->conf.discard_granularity) {
140 put_le16(p + 69, (1 << 14)); /* determinate TRIM behavior */
141 }
ccf0fd8b
RE		 142
143 if (s->ncq_queues) {
144 put_le16(p + 75, s->ncq_queues - 1);
145 /* NCQ supported */
146 put_le16(p + 76, (1 << 8));
147 }
148
94458802
FB		 149 put_le16(p + 80, 0xf0); /* ata3 -> ata6 supported */
150 put_le16(p + 81, 0x16); /* conforms to ata5 */
a58b8d54
CH		 151 /* 14=NOP supported, 5=WCACHE supported, 0=SMART supported */
152 put_le16(p + 82, (1 << 14) | (1 << 5) | 1);
c2ff060f
FB		 153 /* 13=flush_cache_ext,12=flush_cache,10=lba48 */
154 put_le16(p + 83, (1 << 14) | (1 << 13) | (1 <<12) | (1 << 10));
95ebda85
FB		 155 /* 14=set to 1, 8=has WWN, 1=SMART self test, 0=SMART error logging */
156 if (s->wwn) {
157 put_le16(p + 84, (1 << 14) | (1 << 8) | 0);
158 } else {
159 put_le16(p + 84, (1 << 14) | 0);
160 }
e900a7b7 161 /* 14 = NOP supported, 5=WCACHE enabled, 0=SMART feature set enabled */
4be74634
MA		 162 if (blk_enable_write_cache(s->blk)) {
163 put_le16(p + 85, (1 << 14) | (1 << 5) | 1);
164 } else {
165 put_le16(p + 85, (1 << 14) | 1);
166 }
c2ff060f 167 /* 13=flush_cache_ext,12=flush_cache,10=lba48 */
2844bdd9 168 put_le16(p + 86, (1 << 13) | (1 <<12) | (1 << 10));
95ebda85
FB		 169 /* 14=set to 1, 8=has WWN, 1=SMART self test, 0=SMART error logging */
170 if (s->wwn) {
171 put_le16(p + 87, (1 << 14) | (1 << 8) | 0);
172 } else {
173 put_le16(p + 87, (1 << 14) | 0);
174 }
94458802
FB		 175 put_le16(p + 88, 0x3f | (1 << 13)); /* udma5 set and supported */
176 put_le16(p + 93, 1 | (1 << 14) | 0x2000);
01ce352e
JS		 177 /* *(p + 100) := nb_sectors -- see ide_identify_size */
178 /* *(p + 101) := nb_sectors >> 16 -- see ide_identify_size */
179 /* *(p + 102) := nb_sectors >> 32 -- see ide_identify_size */
180 /* *(p + 103) := nb_sectors >> 48 -- see ide_identify_size */
d353fb72 181
57dac7ef
MA		 182 if (dev && dev->conf.physical_block_size)
183 put_le16(p + 106, 0x6000 | get_physical_block_exp(&dev->conf));
95ebda85
FB		 184 if (s->wwn) {
185 /* LE 16-bit words 111-108 contain 64-bit World Wide Name */
186 put_le16(p + 108, s->wwn >> 48);
187 put_le16(p + 109, s->wwn >> 32);
188 put_le16(p + 110, s->wwn >> 16);
189 put_le16(p + 111, s->wwn);
190 }
d353fb72
CH		 191 if (dev && dev->conf.discard_granularity) {
192 put_le16(p + 169, 1); /* TRIM support */
193 }
94458802 194
01ce352e 195 ide_identify_size(s);
94458802 196 s->identify_set = 1;
4bf6637d
JS		 197
198fill_buffer:
199 memcpy(s->io_buffer, p, sizeof(s->identify_data));
5391d806
FB		 200}
201
202static void ide_atapi_identify(IDEState *s)
203{
204 uint16_t *p;
205
4bf6637d 206 p = (uint16_t *)s->identify_data;
94458802 207 if (s->identify_set) {
4bf6637d 208 goto fill_buffer;
94458802 209 }
4bf6637d 210 memset(p, 0, sizeof(s->identify_data));
94458802 211
5391d806 212 /* Removable CDROM, 50us response, 12 byte packets */
67b915a5 213 put_le16(p + 0, (2 << 14) | (5 << 8) | (1 << 7) | (2 << 5) | (0 << 0));
fa879c64 214 padstr((char *)(p + 10), s->drive_serial_str, 20); /* serial number */
67b915a5
FB		 215 put_le16(p + 20, 3); /* buffer type */
216 put_le16(p + 21, 512); /* cache size in sectors */
217 put_le16(p + 22, 4); /* ecc bytes */
47c06340 218 padstr((char *)(p + 23), s->version, 8); /* firmware version */
27e0c9a1 219 padstr((char *)(p + 27), s->drive_model_str, 40); /* model */
67b915a5 220 put_le16(p + 48, 1); /* dword I/O (XXX: should not be set on CDROM) */
8ccad811
FB		 221#ifdef USE_DMA_CDROM
222 put_le16(p + 49, 1 << 9 | 1 << 8); /* DMA and LBA supported */
223 put_le16(p + 53, 7); /* words 64-70, 54-58, 88 valid */
d1b5c20d 224 put_le16(p + 62, 7); /* single word dma0-2 supported */
8ccad811 225 put_le16(p + 63, 7); /* mdma0-2 supported */
8ccad811 226#else
67b915a5
FB		 227 put_le16(p + 49, 1 << 9); /* LBA supported, no DMA */
228 put_le16(p + 53, 3); /* words 64-70, 54-58 valid */
229 put_le16(p + 63, 0x103); /* DMA modes XXX: may be incorrect */
8ccad811 230#endif
79d1d331 231 put_le16(p + 64, 3); /* pio3-4 supported */
67b915a5
FB		 232 put_le16(p + 65, 0xb4); /* minimum DMA multiword tx cycle time */
233 put_le16(p + 66, 0xb4); /* recommended DMA multiword tx cycle time */
234 put_le16(p + 67, 0x12c); /* minimum PIO cycle time without flow control */
235 put_le16(p + 68, 0xb4); /* minimum PIO cycle time with IORDY flow control */
94458802 236
67b915a5
FB		 237 put_le16(p + 71, 30); /* in ns */
238 put_le16(p + 72, 30); /* in ns */
5391d806 239
1bdaa28d
AG		 240 if (s->ncq_queues) {
241 put_le16(p + 75, s->ncq_queues - 1);
242 /* NCQ supported */
243 put_le16(p + 76, (1 << 8));
244 }
245
67b915a5 246 put_le16(p + 80, 0x1e); /* support up to ATA/ATAPI-4 */
c5fe97e3
JS		 247 if (s->wwn) {
248 put_le16(p + 84, (1 << 8)); /* supports WWN for words 108-111 */
249 put_le16(p + 87, (1 << 8)); /* WWN enabled */
250 }
251
8ccad811
FB		 252#ifdef USE_DMA_CDROM
253 put_le16(p + 88, 0x3f | (1 << 13)); /* udma5 set and supported */
254#endif
c5fe97e3
JS		 255
256 if (s->wwn) {
257 /* LE 16-bit words 111-108 contain 64-bit World Wide Name */
258 put_le16(p + 108, s->wwn >> 48);
259 put_le16(p + 109, s->wwn >> 32);
260 put_le16(p + 110, s->wwn >> 16);
261 put_le16(p + 111, s->wwn);
262 }
263
94458802 264 s->identify_set = 1;
4bf6637d
JS		 265
266fill_buffer:
267 memcpy(s->io_buffer, p, sizeof(s->identify_data));
5391d806
FB		 268}
269
01ce352e
JS		 270static void ide_cfata_identify_size(IDEState *s)
271{
272 uint16_t *p = (uint16_t *)s->identify_data;
273 put_le16(p + 7, s->nb_sectors >> 16); /* Sectors per card */
274 put_le16(p + 8, s->nb_sectors); /* Sectors per card */
275 put_le16(p + 60, s->nb_sectors); /* Total LBA sectors */
276 put_le16(p + 61, s->nb_sectors >> 16); /* Total LBA sectors */
277}
278
201a51fc
AZ		 279static void ide_cfata_identify(IDEState *s)
280{
281 uint16_t *p;
282 uint32_t cur_sec;
201a51fc 283
4bf6637d
JS		 284 p = (uint16_t *)s->identify_data;
285 if (s->identify_set) {
201a51fc 286 goto fill_buffer;
4bf6637d 287 }
201a51fc
AZ		 288 memset(p, 0, sizeof(s->identify_data));
289
290 cur_sec = s->cylinders * s->heads * s->sectors;
291
292 put_le16(p + 0, 0x848a); /* CF Storage Card signature */
293 put_le16(p + 1, s->cylinders); /* Default cylinders */
294 put_le16(p + 3, s->heads); /* Default heads */
295 put_le16(p + 6, s->sectors); /* Default sectors per track */
01ce352e
JS		 296 /* *(p + 7) := nb_sectors >> 16 -- see ide_cfata_identify_size */
297 /* *(p + 8) := nb_sectors -- see ide_cfata_identify_size */
fa879c64 298 padstr((char *)(p + 10), s->drive_serial_str, 20); /* serial number */
201a51fc 299 put_le16(p + 22, 0x0004); /* ECC bytes */
47c06340 300 padstr((char *) (p + 23), s->version, 8); /* Firmware Revision */
27e0c9a1 301 padstr((char *) (p + 27), s->drive_model_str, 40);/* Model number */
201a51fc
AZ		 302#if MAX_MULT_SECTORS > 1
303 put_le16(p + 47, 0x8000 | MAX_MULT_SECTORS);
304#else
305 put_le16(p + 47, 0x0000);
306#endif
307 put_le16(p + 49, 0x0f00); /* Capabilities */
308 put_le16(p + 51, 0x0002); /* PIO cycle timing mode */
309 put_le16(p + 52, 0x0001); /* DMA cycle timing mode */
310 put_le16(p + 53, 0x0003); /* Translation params valid */
311 put_le16(p + 54, s->cylinders); /* Current cylinders */
312 put_le16(p + 55, s->heads); /* Current heads */
313 put_le16(p + 56, s->sectors); /* Current sectors */
314 put_le16(p + 57, cur_sec); /* Current capacity */
315 put_le16(p + 58, cur_sec >> 16); /* Current capacity */
316 if (s->mult_sectors) /* Multiple sector setting */
317 put_le16(p + 59, 0x100 | s->mult_sectors);
01ce352e
JS		 318 /* *(p + 60) := nb_sectors -- see ide_cfata_identify_size */
319 /* *(p + 61) := nb_sectors >> 16 -- see ide_cfata_identify_size */
201a51fc
AZ		 320 put_le16(p + 63, 0x0203); /* Multiword DMA capability */
321 put_le16(p + 64, 0x0001); /* Flow Control PIO support */
322 put_le16(p + 65, 0x0096); /* Min. Multiword DMA cycle */
323 put_le16(p + 66, 0x0096); /* Rec. Multiword DMA cycle */
324 put_le16(p + 68, 0x00b4); /* Min. PIO cycle time */
325 put_le16(p + 82, 0x400c); /* Command Set supported */
326 put_le16(p + 83, 0x7068); /* Command Set supported */
327 put_le16(p + 84, 0x4000); /* Features supported */
328 put_le16(p + 85, 0x000c); /* Command Set enabled */
329 put_le16(p + 86, 0x7044); /* Command Set enabled */
330 put_le16(p + 87, 0x4000); /* Features enabled */
331 put_le16(p + 91, 0x4060); /* Current APM level */
332 put_le16(p + 129, 0x0002); /* Current features option */
333 put_le16(p + 130, 0x0005); /* Reassigned sectors */
334 put_le16(p + 131, 0x0001); /* Initial power mode */
335 put_le16(p + 132, 0x0000); /* User signature */
336 put_le16(p + 160, 0x8100); /* Power requirement */
337 put_le16(p + 161, 0x8001); /* CF command set */
338
01ce352e 339 ide_cfata_identify_size(s);
201a51fc
AZ		 340 s->identify_set = 1;
341
342fill_buffer:
343 memcpy(s->io_buffer, p, sizeof(s->identify_data));
344}
345
5391d806
FB		 346static void ide_set_signature(IDEState *s)
347{
348 s->select &= 0xf0; /* clear head */
349 /* put signature */
350 s->nsector = 1;
351 s->sector = 1;
cd8722bb 352 if (s->drive_kind == IDE_CD) {
5391d806
FB		 353 s->lcyl = 0x14;
354 s->hcyl = 0xeb;
4be74634 355 } else if (s->blk) {
5391d806
FB		 356 s->lcyl = 0;
357 s->hcyl = 0;
358 } else {
359 s->lcyl = 0xff;
360 s->hcyl = 0xff;
361 }
362}
363
d353fb72 364typedef struct TrimAIOCB {
7c84b1b8 365 BlockAIOCB common;
a987ee1f 366 BlockBackend *blk;
d353fb72
CH		 367 QEMUBH *bh;
368 int ret;
501378c3 369 QEMUIOVector *qiov;
7c84b1b8 370 BlockAIOCB *aiocb;
501378c3 371 int i, j;
d353fb72
CH		 372} TrimAIOCB;
373
7c84b1b8 374static void trim_aio_cancel(BlockAIOCB *acb)
d353fb72
CH		 375{
376 TrimAIOCB *iocb = container_of(acb, TrimAIOCB, common);
377
e551c999 378 /* Exit the loop so ide_issue_trim_cb will not continue */
501378c3
PB		 379 iocb->j = iocb->qiov->niov - 1;
380 iocb->i = (iocb->qiov->iov[iocb->j].iov_len / 8) - 1;
381
e551c999 382 iocb->ret = -ECANCELED;
501378c3
PB		 383
384 if (iocb->aiocb) {
4be74634 385 blk_aio_cancel_async(iocb->aiocb);
e551c999 386 iocb->aiocb = NULL;
501378c3 387 }
d353fb72
CH		 388}
389
d7331bed 390static const AIOCBInfo trim_aiocb_info = {
d353fb72 391 .aiocb_size = sizeof(TrimAIOCB),
e551c999 392 .cancel_async = trim_aio_cancel,
d353fb72
CH		 393};
394
395static void ide_trim_bh_cb(void *opaque)
396{
397 TrimAIOCB *iocb = opaque;
398
399 iocb->common.cb(iocb->common.opaque, iocb->ret);
400
401 qemu_bh_delete(iocb->bh);
402 iocb->bh = NULL;
8007429a 403 qemu_aio_unref(iocb);
d353fb72
CH		 404}
405
501378c3
PB		 406static void ide_issue_trim_cb(void *opaque, int ret)
407{
408 TrimAIOCB *iocb = opaque;
409 if (ret >= 0) {
410 while (iocb->j < iocb->qiov->niov) {
411 int j = iocb->j;
412 while (++iocb->i < iocb->qiov->iov[j].iov_len / 8) {
413 int i = iocb->i;
414 uint64_t *buffer = iocb->qiov->iov[j].iov_base;
415
416 /* 6-byte LBA + 2-byte range per entry */
417 uint64_t entry = le64_to_cpu(buffer[i]);
418 uint64_t sector = entry & 0x0000ffffffffffffULL;
419 uint16_t count = entry >> 48;
420
421 if (count == 0) {
422 continue;
423 }
424
425 /* Got an entry! Submit and exit. */
a987ee1f
MA		 426 iocb->aiocb = blk_aio_discard(iocb->blk, sector, count,
427 ide_issue_trim_cb, opaque);
501378c3
PB		 428 return;
429 }
430
431 iocb->j++;
432 iocb->i = -1;
433 }
434 } else {
435 iocb->ret = ret;
436 }
437
438 iocb->aiocb = NULL;
439 if (iocb->bh) {
440 qemu_bh_schedule(iocb->bh);
441 }
442}
443
4be74634 444BlockAIOCB *ide_issue_trim(BlockBackend *blk,
d353fb72 445 int64_t sector_num, QEMUIOVector *qiov, int nb_sectors,
097310b5 446 BlockCompletionFunc *cb, void *opaque)
d353fb72
CH		 447{
448 TrimAIOCB *iocb;
d353fb72 449
4be74634 450 iocb = blk_aio_get(&trim_aiocb_info, blk, cb, opaque);
a987ee1f 451 iocb->blk = blk;
d353fb72
CH		 452 iocb->bh = qemu_bh_new(ide_trim_bh_cb, iocb);
453 iocb->ret = 0;
501378c3
PB		 454 iocb->qiov = qiov;
455 iocb->i = -1;
456 iocb->j = 0;
457 ide_issue_trim_cb(iocb, 0);
d353fb72
CH		 458 return &iocb->common;
459}
460
9ef2e93f 461void ide_abort_command(IDEState *s)
5391d806 462{
08ee9e33 463 ide_transfer_stop(s);
5391d806
FB		 464 s->status = READY_STAT | ERR_STAT;
465 s->error = ABRT_ERR;
466}
467
5391d806 468/* prepare data transfer and tell what to do after */
33231e0e
KW		 469void ide_transfer_start(IDEState *s, uint8_t *buf, int size,
470 EndTransferFunc *end_transfer_func)
5391d806
FB		 471{
472 s->end_transfer_func = end_transfer_func;
473 s->data_ptr = buf;
474 s->data_end = buf + size;
40a6238a 475 if (!(s->status & ERR_STAT)) {
7603d156 476 s->status |= DRQ_STAT;
40a6238a 477 }
44635123
PB		 478 if (s->bus->dma->ops->start_transfer) {
479 s->bus->dma->ops->start_transfer(s->bus->dma);
480 }
5391d806
FB		 481}
482
c7e73adb
PB		 483static void ide_cmd_done(IDEState *s)
484{
485 if (s->bus->dma->ops->cmd_done) {
486 s->bus->dma->ops->cmd_done(s->bus->dma);
487 }
488}
489
33231e0e 490void ide_transfer_stop(IDEState *s)
5391d806
FB		 491{
492 s->end_transfer_func = ide_transfer_stop;
493 s->data_ptr = s->io_buffer;
494 s->data_end = s->io_buffer;
495 s->status &= ~DRQ_STAT;
c7e73adb 496 ide_cmd_done(s);
5391d806
FB		 497}
498
356721ae 499int64_t ide_get_sector(IDEState *s)
5391d806
FB		 500{
501 int64_t sector_num;
502 if (s->select & 0x40) {
503 /* lba */
c2ff060f
FB		 504 if (!s->lba48) {
505 sector_num = ((s->select & 0x0f) << 24) | (s->hcyl << 16) |
506 (s->lcyl << 8) | s->sector;
507 } else {
508 sector_num = ((int64_t)s->hob_hcyl << 40) |
509 ((int64_t) s->hob_lcyl << 32) |
510 ((int64_t) s->hob_sector << 24) |
511 ((int64_t) s->hcyl << 16) |
512 ((int64_t) s->lcyl << 8) | s->sector;
513 }
5391d806
FB		 514 } else {
515 sector_num = ((s->hcyl << 8) | s->lcyl) * s->heads * s->sectors +
c2ff060f 516 (s->select & 0x0f) * s->sectors + (s->sector - 1);
5391d806
FB		 517 }
518 return sector_num;
519}
520
356721ae 521void ide_set_sector(IDEState *s, int64_t sector_num)
5391d806
FB		 522{
523 unsigned int cyl, r;
524 if (s->select & 0x40) {
c2ff060f
FB		 525 if (!s->lba48) {
526 s->select = (s->select & 0xf0) | (sector_num >> 24);
527 s->hcyl = (sector_num >> 16);
528 s->lcyl = (sector_num >> 8);
529 s->sector = (sector_num);
530 } else {
531 s->sector = sector_num;
532 s->lcyl = sector_num >> 8;
533 s->hcyl = sector_num >> 16;
534 s->hob_sector = sector_num >> 24;
535 s->hob_lcyl = sector_num >> 32;
536 s->hob_hcyl = sector_num >> 40;
537 }
5391d806
FB		 538 } else {
539 cyl = sector_num / (s->heads * s->sectors);
540 r = sector_num % (s->heads * s->sectors);
541 s->hcyl = cyl >> 8;
542 s->lcyl = cyl;
1b8eb456 543 s->select = (s->select & 0xf0) | ((r / s->sectors) & 0x0f);
5391d806
FB		 544 s->sector = (r % s->sectors) + 1;
545 }
546}
547
e162cfb0
AZ		 548static void ide_rw_error(IDEState *s) {
549 ide_abort_command(s);
9cdd03a7 550 ide_set_irq(s->bus);
e162cfb0
AZ		 551}
552
58ac3211
MA		 553static bool ide_sect_range_ok(IDEState *s,
554 uint64_t sector, uint64_t nb_sectors)
555{
556 uint64_t total_sectors;
557
4be74634 558 blk_get_geometry(s->blk, &total_sectors);
58ac3211
MA		 559 if (sector > total_sectors || nb_sectors > total_sectors - sector) {
560 return false;
561 }
562 return true;
563}
564
1d8c11d6
PL		 565static void ide_buffered_readv_cb(void *opaque, int ret)
566{
567 IDEBufferedRequest *req = opaque;
568 if (!req->orphaned) {
569 if (!ret) {
570 qemu_iovec_from_buf(req->original_qiov, 0, req->iov.iov_base,
571 req->original_qiov->size);
572 }
573 req->original_cb(req->original_opaque, ret);
574 }
575 QLIST_REMOVE(req, list);
576 qemu_vfree(req->iov.iov_base);
577 g_free(req);
578}
579
580#define MAX_BUFFERED_REQS 16
581
582BlockAIOCB *ide_buffered_readv(IDEState *s, int64_t sector_num,
583 QEMUIOVector *iov, int nb_sectors,
584 BlockCompletionFunc *cb, void *opaque)
585{
586 BlockAIOCB *aioreq;
587 IDEBufferedRequest *req;
588 int c = 0;
589
590 QLIST_FOREACH(req, &s->buffered_requests, list) {
591 c++;
592 }
593 if (c > MAX_BUFFERED_REQS) {
594 return blk_abort_aio_request(s->blk, cb, opaque, -EIO);
595 }
596
597 req = g_new0(IDEBufferedRequest, 1);
598 req->original_qiov = iov;
599 req->original_cb = cb;
600 req->original_opaque = opaque;
601 req->iov.iov_base = qemu_blockalign(blk_bs(s->blk), iov->size);
602 req->iov.iov_len = iov->size;
603 qemu_iovec_init_external(&req->qiov, &req->iov, 1);
604
605 aioreq = blk_aio_readv(s->blk, sector_num, &req->qiov, nb_sectors,
606 ide_buffered_readv_cb, req);
607
608 QLIST_INSERT_HEAD(&s->buffered_requests, req, list);
609 return aioreq;
610}
611
4e2b8b4a
PB		 612static void ide_sector_read(IDEState *s);
613
bef0fd59
SH		 614static void ide_sector_read_cb(void *opaque, int ret)
615{
616 IDEState *s = opaque;
617 int n;
618
619 s->pio_aiocb = NULL;
620 s->status &= ~BUSY_STAT;
621
0d910cfe
FZ		 622 if (ret == -ECANCELED) {
623 return;
624 }
bef0fd59 625 if (ret != 0) {
fd648f10
PB		 626 if (ide_handle_rw_error(s, -ret, IDE_RETRY_PIO |
627 IDE_RETRY_READ)) {
bef0fd59
SH		 628 return;
629 }
630 }
631
ecca3b39
AG		 632 block_acct_done(blk_get_stats(s->blk), &s->acct);
633
bef0fd59
SH		 634 n = s->nsector;
635 if (n > s->req_nb_sectors) {
636 n = s->req_nb_sectors;
637 }
638
bef0fd59
SH		 639 ide_set_sector(s, ide_get_sector(s) + n);
640 s->nsector -= n;
dd0bf7ba
JS		 641 /* Allow the guest to read the io_buffer */
642 ide_transfer_start(s, s->io_buffer, n * BDRV_SECTOR_SIZE, ide_sector_read);
dd0bf7ba 643 ide_set_irq(s->bus);
bef0fd59
SH		 644}
645
4e2b8b4a 646static void ide_sector_read(IDEState *s)
5391d806
FB		 647{
648 int64_t sector_num;
bef0fd59 649 int n;
5391d806
FB		 650
651 s->status = READY_STAT | SEEK_STAT;
a136e5a8 652 s->error = 0; /* not needed by IDE spec, but needed by Windows */
5391d806
FB		 653 sector_num = ide_get_sector(s);
654 n = s->nsector;
bef0fd59 655
5391d806 656 if (n == 0) {
5391d806 657 ide_transfer_stop(s);
bef0fd59
SH		 658 return;
659 }
660
661 s->status |= BUSY_STAT;
662
663 if (n > s->req_nb_sectors) {
664 n = s->req_nb_sectors;
665 }
666
5391d806 667#if defined(DEBUG_IDE)
bef0fd59 668 printf("sector=%" PRId64 "\n", sector_num);
5391d806 669#endif
a597e79c 670
58ac3211
MA		 671 if (!ide_sect_range_ok(s, sector_num, n)) {
672 ide_rw_error(s);
ecca3b39 673 block_acct_invalid(blk_get_stats(s->blk), BLOCK_ACCT_READ);
58ac3211
MA		 674 return;
675 }
676
bef0fd59
SH		 677 s->iov.iov_base = s->io_buffer;
678 s->iov.iov_len = n * BDRV_SECTOR_SIZE;
679 qemu_iovec_init_external(&s->qiov, &s->iov, 1);
680
4be74634 681 block_acct_start(blk_get_stats(s->blk), &s->acct,
5366d0c8 682 n * BDRV_SECTOR_SIZE, BLOCK_ACCT_READ);
d66a8fa8
PL		 683 s->pio_aiocb = ide_buffered_readv(s, sector_num, &s->qiov, n,
684 ide_sector_read_cb, s);
5391d806
FB		 685}
686
aaeda4a3 687void dma_buf_commit(IDEState *s, uint32_t tx_bytes)
7aea4412 688{
659142ec
JS		 689 if (s->bus->dma->ops->commit_buf) {
690 s->bus->dma->ops->commit_buf(s->bus->dma, tx_bytes);
691 }
aaeda4a3 692 s->io_buffer_offset += tx_bytes;
1fb8648d 693 qemu_sglist_destroy(&s->sg);
7aea4412
AL		 694}
695
0e7ce54c 696void ide_set_inactive(IDEState *s, bool more)
8337606d 697{
40a6238a 698 s->bus->dma->aiocb = NULL;
a96cb236 699 s->bus->retry_unit = -1;
dc5d0af4
PB		 700 s->bus->retry_sector_num = 0;
701 s->bus->retry_nsector = 0;
829b933b 702 if (s->bus->dma->ops->set_inactive) {
0e7ce54c 703 s->bus->dma->ops->set_inactive(s->bus->dma, more);
829b933b 704 }
c7e73adb 705 ide_cmd_done(s);
8337606d
KW		 706}
707
356721ae 708void ide_dma_error(IDEState *s)
e162cfb0 709{
659142ec 710 dma_buf_commit(s, 0);
08ee9e33 711 ide_abort_command(s);
0e7ce54c 712 ide_set_inactive(s, false);
9cdd03a7 713 ide_set_irq(s->bus);
e162cfb0
AZ		 714}
715
ce4b6522 716static int ide_handle_rw_error(IDEState *s, int error, int op)
428c5705 717{
fd648f10 718 bool is_read = (op & IDE_RETRY_READ) != 0;
4be74634 719 BlockErrorAction action = blk_get_error_action(s->blk, is_read, error);
428c5705 720
a589569f 721 if (action == BLOCK_ERROR_ACTION_STOP) {
a96cb236 722 assert(s->bus->retry_unit == s->unit);
def93791 723 s->bus->error_status = op;
a589569f 724 } else if (action == BLOCK_ERROR_ACTION_REPORT) {
ecca3b39 725 block_acct_failed(blk_get_stats(s->blk), &s->acct);
fd648f10 726 if (op & IDE_RETRY_DMA) {
428c5705 727 ide_dma_error(s);
7aea4412 728 } else {
428c5705 729 ide_rw_error(s);
7aea4412 730 }
428c5705 731 }
4be74634 732 blk_error_action(s->blk, action, is_read, error);
a589569f 733 return action != BLOCK_ERROR_ACTION_IGNORE;
428c5705
AL		 734}
735
4e2b8b4a 736static void ide_dma_cb(void *opaque, int ret)
98087450 737{
40a6238a 738 IDEState *s = opaque;
8ccad811
FB		 739 int n;
740 int64_t sector_num;
038268e2 741 bool stay_active = false;
8ccad811 742
0d910cfe
FZ		 743 if (ret == -ECANCELED) {
744 return;
745 }
e162cfb0 746 if (ret < 0) {
fd648f10 747 int op = IDE_RETRY_DMA;
cd369c46 748
4e1e0051 749 if (s->dma_cmd == IDE_DMA_READ)
fd648f10 750 op |= IDE_RETRY_READ;
d353fb72 751 else if (s->dma_cmd == IDE_DMA_TRIM)
fd648f10 752 op |= IDE_RETRY_TRIM;
d353fb72 753
cd369c46 754 if (ide_handle_rw_error(s, -ret, op)) {
ce4b6522
KW		 755 return;
756 }
e162cfb0
AZ		 757 }
758
8ccad811 759 n = s->io_buffer_size >> 9;
038268e2
KW		 760 if (n > s->nsector) {
761 /* The PRDs were longer than needed for this request. Shorten them so
762 * we don't get a negative remainder. The Active bit must remain set
763 * after the request completes. */
764 n = s->nsector;
765 stay_active = true;
766 }
767
8ccad811
FB		 768 sector_num = ide_get_sector(s);
769 if (n > 0) {
a718978e
JS		 770 assert(n * 512 == s->sg.size);
771 dma_buf_commit(s, s->sg.size);
8ccad811
FB		 772 sector_num += n;
773 ide_set_sector(s, sector_num);
774 s->nsector -= n;
8ccad811
FB		 775 }
776
777 /* end of transfer ? */
778 if (s->nsector == 0) {
98087450 779 s->status = READY_STAT | SEEK_STAT;
9cdd03a7 780 ide_set_irq(s->bus);
cd369c46 781 goto eot;
98087450 782 }
8ccad811
FB		 783
784 /* launch next transfer */
785 n = s->nsector;
596bb44d 786 s->io_buffer_index = 0;
8ccad811 787 s->io_buffer_size = n * 512;
a718978e 788 if (s->bus->dma->ops->prepare_buf(s->bus->dma, s->io_buffer_size) < 512) {
69c38b8f
KW		 789 /* The PRDs were too short. Reset the Active bit, but don't raise an
790 * interrupt. */
72bcca73 791 s->status = READY_STAT | SEEK_STAT;
3251bdcf 792 dma_buf_commit(s, 0);
7aea4412 793 goto eot;
69c38b8f 794 }
cd369c46 795
8ccad811 796#ifdef DEBUG_AIO
4e1e0051
CH		 797 printf("ide_dma_cb: sector_num=%" PRId64 " n=%d, cmd_cmd=%d\n",
798 sector_num, n, s->dma_cmd);
8ccad811 799#endif
cd369c46 800
d66168ed
MT		 801 if ((s->dma_cmd == IDE_DMA_READ || s->dma_cmd == IDE_DMA_WRITE) &&
802 !ide_sect_range_ok(s, sector_num, n)) {
58ac3211 803 ide_dma_error(s);
ecca3b39 804 block_acct_invalid(blk_get_stats(s->blk), s->acct.type);
58ac3211
MA		 805 return;
806 }
807
4e1e0051
CH		 808 switch (s->dma_cmd) {
809 case IDE_DMA_READ:
4be74634
MA		 810 s->bus->dma->aiocb = dma_blk_read(s->blk, &s->sg, sector_num,
811 ide_dma_cb, s);
4e1e0051
CH		 812 break;
813 case IDE_DMA_WRITE:
4be74634
MA		 814 s->bus->dma->aiocb = dma_blk_write(s->blk, &s->sg, sector_num,
815 ide_dma_cb, s);
4e1e0051 816 break;
d353fb72 817 case IDE_DMA_TRIM:
4be74634
MA		 818 s->bus->dma->aiocb = dma_blk_io(s->blk, &s->sg, sector_num,
819 ide_issue_trim, ide_dma_cb, s,
820 DMA_DIRECTION_TO_DEVICE);
d353fb72 821 break;
cd369c46 822 }
cd369c46
CH		 823 return;
824
825eot:
a597e79c 826 if (s->dma_cmd == IDE_DMA_READ || s->dma_cmd == IDE_DMA_WRITE) {
4be74634 827 block_acct_done(blk_get_stats(s->blk), &s->acct);
a597e79c 828 }
0e7ce54c 829 ide_set_inactive(s, stay_active);
98087450
FB		 830}
831
4e1e0051 832static void ide_sector_start_dma(IDEState *s, enum ide_dma_cmd dma_cmd)
98087450 833{
8ccad811 834 s->status = READY_STAT | SEEK_STAT | DRQ_STAT | BUSY_STAT;
98087450 835 s->io_buffer_size = 0;
4e1e0051 836 s->dma_cmd = dma_cmd;
a597e79c
CH		 837
838 switch (dma_cmd) {
839 case IDE_DMA_READ:
4be74634 840 block_acct_start(blk_get_stats(s->blk), &s->acct,
5366d0c8 841 s->nsector * BDRV_SECTOR_SIZE, BLOCK_ACCT_READ);
a597e79c
CH		 842 break;
843 case IDE_DMA_WRITE:
4be74634 844 block_acct_start(blk_get_stats(s->blk), &s->acct,
5366d0c8 845 s->nsector * BDRV_SECTOR_SIZE, BLOCK_ACCT_WRITE);
a597e79c
CH		 846 break;
847 default:
848 break;
849 }
850
4855b576
PB		 851 ide_start_dma(s, ide_dma_cb);
852}
853
097310b5 854void ide_start_dma(IDEState *s, BlockCompletionFunc *cb)
4855b576 855{
c71c06d4 856 s->io_buffer_index = 0;
a96cb236 857 s->bus->retry_unit = s->unit;
dc5d0af4
PB		 858 s->bus->retry_sector_num = ide_get_sector(s);
859 s->bus->retry_nsector = s->nsector;
4855b576
PB		 860 if (s->bus->dma->ops->start_dma) {
861 s->bus->dma->ops->start_dma(s->bus->dma, s, cb);
862 }
98087450
FB		 863}
864
4e2b8b4a
PB		 865static void ide_sector_write(IDEState *s);
866
a09db21f
FB		 867static void ide_sector_write_timer_cb(void *opaque)
868{
869 IDEState *s = opaque;
9cdd03a7 870 ide_set_irq(s->bus);
a09db21f
FB		 871}
872
e82dabd8 873static void ide_sector_write_cb(void *opaque, int ret)
5391d806 874{
e82dabd8
SH		 875 IDEState *s = opaque;
876 int n;
a597e79c 877
0d910cfe
FZ		 878 if (ret == -ECANCELED) {
879 return;
880 }
428c5705 881
e82dabd8
SH		 882 s->pio_aiocb = NULL;
883 s->status &= ~BUSY_STAT;
884
e162cfb0 885 if (ret != 0) {
fd648f10 886 if (ide_handle_rw_error(s, -ret, IDE_RETRY_PIO)) {
428c5705 887 return;
e82dabd8 888 }
e162cfb0
AZ		 889 }
890
ecca3b39
AG		 891 block_acct_done(blk_get_stats(s->blk), &s->acct);
892
e82dabd8
SH		 893 n = s->nsector;
894 if (n > s->req_nb_sectors) {
895 n = s->req_nb_sectors;
896 }
5391d806 897 s->nsector -= n;
36334faf 898
6aff22c0 899 ide_set_sector(s, ide_get_sector(s) + n);
5391d806 900 if (s->nsector == 0) {
292eef5a 901 /* no more sectors to write */
5391d806
FB		 902 ide_transfer_stop(s);
903 } else {
e82dabd8
SH		 904 int n1 = s->nsector;
905 if (n1 > s->req_nb_sectors) {
5391d806 906 n1 = s->req_nb_sectors;
e82dabd8
SH		 907 }
908 ide_transfer_start(s, s->io_buffer, n1 * BDRV_SECTOR_SIZE,
909 ide_sector_write);
5391d806 910 }
3b46e624 911
31c2a146
TS		 912 if (win2k_install_hack && ((++s->irq_count % 16) == 0)) {
913 /* It seems there is a bug in the Windows 2000 installer HDD
914 IDE driver which fills the disk with empty logs when the
915 IDE write IRQ comes too early. This hack tries to correct
916 that at the expense of slower write performances. Use this
917 option _only_ to install Windows 2000. You must disable it
918 for normal use. */
bc72ad67
AB		 919 timer_mod(s->sector_write_timer,
920 qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + (get_ticks_per_sec() / 1000));
f7736b91 921 } else {
9cdd03a7 922 ide_set_irq(s->bus);
31c2a146 923 }
5391d806
FB		 924}
925
4e2b8b4a 926static void ide_sector_write(IDEState *s)
e82dabd8
SH		 927{
928 int64_t sector_num;
929 int n;
930
931 s->status = READY_STAT | SEEK_STAT | BUSY_STAT;
932 sector_num = ide_get_sector(s);
933#if defined(DEBUG_IDE)
934 printf("sector=%" PRId64 "\n", sector_num);
935#endif
936 n = s->nsector;
937 if (n > s->req_nb_sectors) {
938 n = s->req_nb_sectors;
939 }
940
58ac3211
MA		 941 if (!ide_sect_range_ok(s, sector_num, n)) {
942 ide_rw_error(s);
ecca3b39 943 block_acct_invalid(blk_get_stats(s->blk), BLOCK_ACCT_WRITE);
58ac3211
MA		 944 return;
945 }
946
e82dabd8
SH		 947 s->iov.iov_base = s->io_buffer;
948 s->iov.iov_len = n * BDRV_SECTOR_SIZE;
949 qemu_iovec_init_external(&s->qiov, &s->iov, 1);
950
4be74634 951 block_acct_start(blk_get_stats(s->blk), &s->acct,
c618f331 952 n * BDRV_SECTOR_SIZE, BLOCK_ACCT_WRITE);
4be74634
MA		 953 s->pio_aiocb = blk_aio_writev(s->blk, sector_num, &s->qiov, n,
954 ide_sector_write_cb, s);
e82dabd8
SH		 955}
956
b0484ae4
CH		 957static void ide_flush_cb(void *opaque, int ret)
958{
959 IDEState *s = opaque;
960
69f72a22
PB		 961 s->pio_aiocb = NULL;
962
0d910cfe
FZ		 963 if (ret == -ECANCELED) {
964 return;
965 }
e2bcadad
KW		 966 if (ret < 0) {
967 /* XXX: What sector number to set here? */
fd648f10 968 if (ide_handle_rw_error(s, -ret, IDE_RETRY_FLUSH)) {
e2bcadad
KW		 969 return;
970 }
971 }
b0484ae4 972
4be74634
MA		 973 if (s->blk) {
974 block_acct_done(blk_get_stats(s->blk), &s->acct);
f7f3ff1d 975 }
b0484ae4 976 s->status = READY_STAT | SEEK_STAT;
c7e73adb 977 ide_cmd_done(s);
b0484ae4
CH		 978 ide_set_irq(s->bus);
979}
980
4e2b8b4a 981static void ide_flush_cache(IDEState *s)
6bcb1a79 982{
4be74634 983 if (s->blk == NULL) {
6bcb1a79 984 ide_flush_cb(s, 0);
b2df7531
KW		 985 return;
986 }
987
f68ec837 988 s->status |= BUSY_STAT;
4be74634
MA		 989 block_acct_start(blk_get_stats(s->blk), &s->acct, 0, BLOCK_ACCT_FLUSH);
990 s->pio_aiocb = blk_aio_flush(s->blk, ide_flush_cb, s);
6bcb1a79
KW		 991}
992
201a51fc
AZ		 993static void ide_cfata_metadata_inquiry(IDEState *s)
994{
995 uint16_t *p;
996 uint32_t spd;
997
998 p = (uint16_t *) s->io_buffer;
999 memset(p, 0, 0x200);
1000 spd = ((s->mdata_size - 1) >> 9) + 1;
1001
1002 put_le16(p + 0, 0x0001); /* Data format revision */
1003 put_le16(p + 1, 0x0000); /* Media property: silicon */
1004 put_le16(p + 2, s->media_changed); /* Media status */
1005 put_le16(p + 3, s->mdata_size & 0xffff); /* Capacity in bytes (low) */
1006 put_le16(p + 4, s->mdata_size >> 16); /* Capacity in bytes (high) */
1007 put_le16(p + 5, spd & 0xffff); /* Sectors per device (low) */
1008 put_le16(p + 6, spd >> 16); /* Sectors per device (high) */
1009}
1010
1011static void ide_cfata_metadata_read(IDEState *s)
1012{
1013 uint16_t *p;
1014
1015 if (((s->hcyl << 16) | s->lcyl) << 9 > s->mdata_size + 2) {
1016 s->status = ERR_STAT;
1017 s->error = ABRT_ERR;
1018 return;
1019 }
1020
1021 p = (uint16_t *) s->io_buffer;
1022 memset(p, 0, 0x200);
1023
1024 put_le16(p + 0, s->media_changed); /* Media status */
1025 memcpy(p + 1, s->mdata_storage + (((s->hcyl << 16) | s->lcyl) << 9),
1026 MIN(MIN(s->mdata_size - (((s->hcyl << 16) | s->lcyl) << 9),
1027 s->nsector << 9), 0x200 - 2));
1028}
1029
1030static void ide_cfata_metadata_write(IDEState *s)
1031{
1032 if (((s->hcyl << 16) | s->lcyl) << 9 > s->mdata_size + 2) {
1033 s->status = ERR_STAT;
1034 s->error = ABRT_ERR;
1035 return;
1036 }
1037
1038 s->media_changed = 0;
1039
1040 memcpy(s->mdata_storage + (((s->hcyl << 16) | s->lcyl) << 9),
1041 s->io_buffer + 2,
1042 MIN(MIN(s->mdata_size - (((s->hcyl << 16) | s->lcyl) << 9),
1043 s->nsector << 9), 0x200 - 2));
1044}
1045
bd491d6a 1046/* called when the inserted state of the media has changed */
7d4b4ba5 1047static void ide_cd_change_cb(void *opaque, bool load)
bd491d6a
TS		 1048{
1049 IDEState *s = opaque;
96b8f136 1050 uint64_t nb_sectors;
bd491d6a 1051
25ad22bc 1052 s->tray_open = !load;
4be74634 1053 blk_get_geometry(s->blk, &nb_sectors);
bd491d6a 1054 s->nb_sectors = nb_sectors;
9118e7f0 1055
4b9b7092
AS		 1056 /*
1057 * First indicate to the guest that a CD has been removed. That's
1058 * done on the next command the guest sends us.
1059 *
67cc61e4 1060 * Then we set UNIT_ATTENTION, by which the guest will
4b9b7092
AS		 1061 * detect a new CD in the drive. See ide_atapi_cmd() for details.
1062 */
93c8cfd9 1063 s->cdrom_changed = 1;
996faf1a 1064 s->events.new_media = true;
2df0a3a3
PB		 1065 s->events.eject_request = false;
1066 ide_set_irq(s->bus);
1067}
1068
1069static void ide_cd_eject_request_cb(void *opaque, bool force)
1070{
1071 IDEState *s = opaque;
1072
1073 s->events.eject_request = true;
1074 if (force) {
1075 s->tray_locked = false;
1076 }
9cdd03a7 1077 ide_set_irq(s->bus);
bd491d6a
TS		 1078}
1079
c2ff060f
FB		 1080static void ide_cmd_lba48_transform(IDEState *s, int lba48)
1081{
1082 s->lba48 = lba48;
1083
1084 /* handle the 'magic' 0 nsector count conversion here. to avoid
1085 * fiddling with the rest of the read logic, we just store the
1086 * full sector count in ->nsector and ignore ->hob_nsector from now
1087 */
1088 if (!s->lba48) {
1089 if (!s->nsector)
1090 s->nsector = 256;
1091 } else {
1092 if (!s->nsector && !s->hob_nsector)
1093 s->nsector = 65536;
1094 else {
1095 int lo = s->nsector;
1096 int hi = s->hob_nsector;
1097
1098 s->nsector = (hi << 8) | lo;
1099 }
1100 }
1101}
1102
bcbdc4d3 1103static void ide_clear_hob(IDEBus *bus)
c2ff060f
FB		 1104{
1105 /* any write clears HOB high bit of device control register */
bcbdc4d3
GH		 1106 bus->ifs[0].select &= ~(1 << 7);
1107 bus->ifs[1].select &= ~(1 << 7);
c2ff060f
FB		 1108}
1109
356721ae 1110void ide_ioport_write(void *opaque, uint32_t addr, uint32_t val)
caed8802 1111{
bcbdc4d3 1112 IDEBus *bus = opaque;
5391d806
FB		 1113
1114#ifdef DEBUG_IDE
1115 printf("IDE: write addr=0x%x val=0x%02x\n", addr, val);
1116#endif
c2ff060f 1117
5391d806 1118 addr &= 7;
fcdd25ab
AL		 1119
1120 /* ignore writes to command block while busy with previous command */
bcbdc4d3 1121 if (addr != 7 && (idebus_active_if(bus)->status & (BUSY_STAT|DRQ_STAT)))
fcdd25ab
AL		 1122 return;
1123
5391d806
FB		 1124 switch(addr) {
1125 case 0:
1126 break;
1127 case 1:
bcbdc4d3 1128 ide_clear_hob(bus);
c45c3d00 1129 /* NOTE: data is written to the two drives */
bcbdc4d3
GH		 1130 bus->ifs[0].hob_feature = bus->ifs[0].feature;
1131 bus->ifs[1].hob_feature = bus->ifs[1].feature;
1132 bus->ifs[0].feature = val;
1133 bus->ifs[1].feature = val;
5391d806
FB		 1134 break;
1135 case 2:
bcbdc4d3
GH		 1136 ide_clear_hob(bus);
1137 bus->ifs[0].hob_nsector = bus->ifs[0].nsector;
1138 bus->ifs[1].hob_nsector = bus->ifs[1].nsector;
1139 bus->ifs[0].nsector = val;
1140 bus->ifs[1].nsector = val;
5391d806
FB		 1141 break;
1142 case 3:
bcbdc4d3
GH		 1143 ide_clear_hob(bus);
1144 bus->ifs[0].hob_sector = bus->ifs[0].sector;
1145 bus->ifs[1].hob_sector = bus->ifs[1].sector;
1146 bus->ifs[0].sector = val;
1147 bus->ifs[1].sector = val;
5391d806
FB		 1148 break;
1149 case 4:
bcbdc4d3
GH		 1150 ide_clear_hob(bus);
1151 bus->ifs[0].hob_lcyl = bus->ifs[0].lcyl;
1152 bus->ifs[1].hob_lcyl = bus->ifs[1].lcyl;
1153 bus->ifs[0].lcyl = val;
1154 bus->ifs[1].lcyl = val;
5391d806
FB		 1155 break;
1156 case 5:
bcbdc4d3
GH		 1157 ide_clear_hob(bus);
1158 bus->ifs[0].hob_hcyl = bus->ifs[0].hcyl;
1159 bus->ifs[1].hob_hcyl = bus->ifs[1].hcyl;
1160 bus->ifs[0].hcyl = val;
1161 bus->ifs[1].hcyl = val;
5391d806
FB		 1162 break;
1163 case 6:
c2ff060f 1164 /* FIXME: HOB readback uses bit 7 */
bcbdc4d3
GH		 1165 bus->ifs[0].select = (val & ~0x10) | 0xa0;
1166 bus->ifs[1].select = (val | 0x10) | 0xa0;
5391d806 1167 /* select drive */
bcbdc4d3 1168 bus->unit = (val >> 4) & 1;
5391d806
FB		 1169 break;
1170 default:
1171 case 7:
1172 /* command */
7cff87ff
AG		 1173 ide_exec_cmd(bus, val);
1174 break;
1175 }
1176}
1177
b300337e
KW		 1178static bool cmd_nop(IDEState *s, uint8_t cmd)
1179{
1180 return true;
1181}
1182
4286434c
KW		 1183static bool cmd_data_set_management(IDEState *s, uint8_t cmd)
1184{
1185 switch (s->feature) {
1186 case DSM_TRIM:
4be74634 1187 if (s->blk) {
4286434c
KW		 1188 ide_sector_start_dma(s, IDE_DMA_TRIM);
1189 return false;
1190 }
1191 break;
1192 }
1193
1194 ide_abort_command(s);
1195 return true;
1196}
1197
1c66869a
KW		 1198static bool cmd_identify(IDEState *s, uint8_t cmd)
1199{
4be74634 1200 if (s->blk && s->drive_kind != IDE_CD) {
1c66869a
KW		 1201 if (s->drive_kind != IDE_CFATA) {
1202 ide_identify(s);
1203 } else {
1204 ide_cfata_identify(s);
1205 }
1206 s->status = READY_STAT | SEEK_STAT;
1207 ide_transfer_start(s, s->io_buffer, 512, ide_transfer_stop);
1208 ide_set_irq(s->bus);
1209 return false;
1210 } else {
1211 if (s->drive_kind == IDE_CD) {
1212 ide_set_signature(s);
1213 }
1214 ide_abort_command(s);
1215 }
1216
1217 return true;
1218}
1219
413860cf
KW		 1220static bool cmd_verify(IDEState *s, uint8_t cmd)
1221{
1222 bool lba48 = (cmd == WIN_VERIFY_EXT);
1223
1224 /* do sector number check ? */
1225 ide_cmd_lba48_transform(s, lba48);
1226
1227 return true;
1228}
1229
adf3a2c4
KW		 1230static bool cmd_set_multiple_mode(IDEState *s, uint8_t cmd)
1231{
1232 if (s->drive_kind == IDE_CFATA && s->nsector == 0) {
1233 /* Disable Read and Write Multiple */
1234 s->mult_sectors = 0;
1235 } else if ((s->nsector & 0xff) != 0 &&
1236 ((s->nsector & 0xff) > MAX_MULT_SECTORS ||
1237 (s->nsector & (s->nsector - 1)) != 0)) {
1238 ide_abort_command(s);
1239 } else {
1240 s->mult_sectors = s->nsector & 0xff;
1241 }
1242
1243 return true;
1244}
1245
1246static bool cmd_read_multiple(IDEState *s, uint8_t cmd)
1247{
1248 bool lba48 = (cmd == WIN_MULTREAD_EXT);
1249
4be74634 1250 if (!s->blk || !s->mult_sectors) {
adf3a2c4
KW		 1251 ide_abort_command(s);
1252 return true;
1253 }
1254
1255 ide_cmd_lba48_transform(s, lba48);
1256 s->req_nb_sectors = s->mult_sectors;
1257 ide_sector_read(s);
1258 return false;
1259}
1260
1261static bool cmd_write_multiple(IDEState *s, uint8_t cmd)
1262{
1263 bool lba48 = (cmd == WIN_MULTWRITE_EXT);
1264 int n;
1265
4be74634 1266 if (!s->blk || !s->mult_sectors) {
adf3a2c4
KW		 1267 ide_abort_command(s);
1268 return true;
1269 }
1270
1271 ide_cmd_lba48_transform(s, lba48);
1272
1273 s->req_nb_sectors = s->mult_sectors;
1274 n = MIN(s->nsector, s->req_nb_sectors);
1275
1276 s->status = SEEK_STAT | READY_STAT;
1277 ide_transfer_start(s, s->io_buffer, 512 * n, ide_sector_write);
1278
1279 s->media_changed = 1;
1280
1281 return false;
1282}
1283
0e6498ed
KW		 1284static bool cmd_read_pio(IDEState *s, uint8_t cmd)
1285{
1286 bool lba48 = (cmd == WIN_READ_EXT);
1287
1288 if (s->drive_kind == IDE_CD) {
1289 ide_set_signature(s); /* odd, but ATA4 8.27.5.2 requires it */
1290 ide_abort_command(s);
1291 return true;
1292 }
1293
4be74634 1294 if (!s->blk) {
0e6498ed
KW		 1295 ide_abort_command(s);
1296 return true;
1297 }
1298
1299 ide_cmd_lba48_transform(s, lba48);
1300 s->req_nb_sectors = 1;
1301 ide_sector_read(s);
1302
1303 return false;
1304}
1305
1306static bool cmd_write_pio(IDEState *s, uint8_t cmd)
1307{
1308 bool lba48 = (cmd == WIN_WRITE_EXT);
1309
4be74634 1310 if (!s->blk) {
0e6498ed
KW		 1311 ide_abort_command(s);
1312 return true;
1313 }
1314
1315 ide_cmd_lba48_transform(s, lba48);
1316
1317 s->req_nb_sectors = 1;
1318 s->status = SEEK_STAT | READY_STAT;
1319 ide_transfer_start(s, s->io_buffer, 512, ide_sector_write);
1320
1321 s->media_changed = 1;
1322
1323 return false;
1324}
1325
92a6a6f6
KW		 1326static bool cmd_read_dma(IDEState *s, uint8_t cmd)
1327{
1328 bool lba48 = (cmd == WIN_READDMA_EXT);
1329
4be74634 1330 if (!s->blk) {
92a6a6f6
KW		 1331 ide_abort_command(s);
1332 return true;
1333 }
1334
1335 ide_cmd_lba48_transform(s, lba48);
1336 ide_sector_start_dma(s, IDE_DMA_READ);
1337
1338 return false;
1339}
1340
1341static bool cmd_write_dma(IDEState *s, uint8_t cmd)
1342{
1343 bool lba48 = (cmd == WIN_WRITEDMA_EXT);
1344
4be74634 1345 if (!s->blk) {
92a6a6f6
KW		 1346 ide_abort_command(s);
1347 return true;
1348 }
1349
1350 ide_cmd_lba48_transform(s, lba48);
1351 ide_sector_start_dma(s, IDE_DMA_WRITE);
1352
1353 s->media_changed = 1;
1354
1355 return false;
1356}
1357
9afce429
KW		 1358static bool cmd_flush_cache(IDEState *s, uint8_t cmd)
1359{
1360 ide_flush_cache(s);
1361 return false;
1362}
1363
61fdda37
KW		 1364static bool cmd_seek(IDEState *s, uint8_t cmd)
1365{
1366 /* XXX: Check that seek is within bounds */
1367 return true;
1368}
1369
63a82e6a
KW		 1370static bool cmd_read_native_max(IDEState *s, uint8_t cmd)
1371{
1372 bool lba48 = (cmd == WIN_READ_NATIVE_MAX_EXT);
1373
1374 /* Refuse if no sectors are addressable (e.g. medium not inserted) */
1375 if (s->nb_sectors == 0) {
1376 ide_abort_command(s);
1377 return true;
1378 }
1379
1380 ide_cmd_lba48_transform(s, lba48);
1381 ide_set_sector(s, s->nb_sectors - 1);
1382
1383 return true;
1384}
1385
785f6320
KW		 1386static bool cmd_check_power_mode(IDEState *s, uint8_t cmd)
1387{
1388 s->nsector = 0xff; /* device active or idle */
1389 return true;
1390}
1391
ee03398c
KW		 1392static bool cmd_set_features(IDEState *s, uint8_t cmd)
1393{
1394 uint16_t *identify_data;
1395
4be74634 1396 if (!s->blk) {
ee03398c
KW		 1397 ide_abort_command(s);
1398 return true;
1399 }
1400
1401 /* XXX: valid for CDROM ? */
1402 switch (s->feature) {
1403 case 0x02: /* write cache enable */
4be74634 1404 blk_set_enable_write_cache(s->blk, true);
ee03398c
KW		 1405 identify_data = (uint16_t *)s->identify_data;
1406 put_le16(identify_data + 85, (1 << 14) | (1 << 5) | 1);
1407 return true;
1408 case 0x82: /* write cache disable */
4be74634 1409 blk_set_enable_write_cache(s->blk, false);
ee03398c
KW		 1410 identify_data = (uint16_t *)s->identify_data;
1411 put_le16(identify_data + 85, (1 << 14) | 1);
1412 ide_flush_cache(s);
1413 return false;
1414 case 0xcc: /* reverting to power-on defaults enable */
1415 case 0x66: /* reverting to power-on defaults disable */
1416 case 0xaa: /* read look-ahead enable */
1417 case 0x55: /* read look-ahead disable */
1418 case 0x05: /* set advanced power management mode */
1419 case 0x85: /* disable advanced power management mode */
1420 case 0x69: /* NOP */
1421 case 0x67: /* NOP */
1422 case 0x96: /* NOP */
1423 case 0x9a: /* NOP */
1424 case 0x42: /* enable Automatic Acoustic Mode */
1425 case 0xc2: /* disable Automatic Acoustic Mode */
1426 return true;
1427 case 0x03: /* set transfer mode */
1428 {
1429 uint8_t val = s->nsector & 0x07;
1430 identify_data = (uint16_t *)s->identify_data;
1431
1432 switch (s->nsector >> 3) {
1433 case 0x00: /* pio default */
1434 case 0x01: /* pio mode */
1435 put_le16(identify_data + 62, 0x07);
1436 put_le16(identify_data + 63, 0x07);
1437 put_le16(identify_data + 88, 0x3f);
1438 break;
1439 case 0x02: /* sigle word dma mode*/
1440 put_le16(identify_data + 62, 0x07 | (1 << (val + 8)));
1441 put_le16(identify_data + 63, 0x07);
1442 put_le16(identify_data + 88, 0x3f);
1443 break;
1444 case 0x04: /* mdma mode */
1445 put_le16(identify_data + 62, 0x07);
1446 put_le16(identify_data + 63, 0x07 | (1 << (val + 8)));
1447 put_le16(identify_data + 88, 0x3f);
1448 break;
1449 case 0x08: /* udma mode */
1450 put_le16(identify_data + 62, 0x07);
1451 put_le16(identify_data + 63, 0x07);
1452 put_le16(identify_data + 88, 0x3f | (1 << (val + 8)));
1453 break;
1454 default:
1455 goto abort_cmd;
1456 }
1457 return true;
1458 }
1459 }
1460
1461abort_cmd:
1462 ide_abort_command(s);
1463 return true;
1464}
1465
ee425c78
KW		 1466
1467/*** ATAPI commands ***/
1468
1469static bool cmd_identify_packet(IDEState *s, uint8_t cmd)
1470{
1471 ide_atapi_identify(s);
1472 s->status = READY_STAT | SEEK_STAT;
1473 ide_transfer_start(s, s->io_buffer, 512, ide_transfer_stop);
1474 ide_set_irq(s->bus);
1475 return false;
1476}
1477
1478static bool cmd_exec_dev_diagnostic(IDEState *s, uint8_t cmd)
1479{
1480 ide_set_signature(s);
1481
1482 if (s->drive_kind == IDE_CD) {
1483 s->status = 0; /* ATAPI spec (v6) section 9.10 defines packet
1484 * devices to return a clear status register
1485 * with READY_STAT *not* set. */
850484a2 1486 s->error = 0x01;
ee425c78
KW		 1487 } else {
1488 s->status = READY_STAT | SEEK_STAT;
1489 /* The bits of the error register are not as usual for this command!
1490 * They are part of the regular output (this is why ERR_STAT isn't set)
1491 * Device 0 passed, Device 1 passed or not present. */
1492 s->error = 0x01;
1493 ide_set_irq(s->bus);
1494 }
1495
1496 return false;
1497}
1498
1499static bool cmd_device_reset(IDEState *s, uint8_t cmd)
1500{
1501 ide_set_signature(s);
1502 s->status = 0x00; /* NOTE: READY is _not_ set */
1503 s->error = 0x01;
1504
1505 return false;
1506}
1507
1508static bool cmd_packet(IDEState *s, uint8_t cmd)
1509{
1510 /* overlapping commands not supported */
1511 if (s->feature & 0x02) {
1512 ide_abort_command(s);
1513 return true;
1514 }
1515
1516 s->status = READY_STAT | SEEK_STAT;
1517 s->atapi_dma = s->feature & 1;
1518 s->nsector = 1;
1519 ide_transfer_start(s, s->io_buffer, ATAPI_PACKET_SIZE,
1520 ide_atapi_cmd);
1521 return false;
1522}
1523
6b1dd744
KW		 1524
1525/*** CF-ATA commands ***/
1526
1527static bool cmd_cfa_req_ext_error_code(IDEState *s, uint8_t cmd)
1528{
1529 s->error = 0x09; /* miscellaneous error */
1530 s->status = READY_STAT | SEEK_STAT;
1531 ide_set_irq(s->bus);
1532
1533 return false;
1534}
1535
1536static bool cmd_cfa_erase_sectors(IDEState *s, uint8_t cmd)
1537{
1538 /* WIN_SECURITY_FREEZE_LOCK has the same ID as CFA_WEAR_LEVEL and is
1539 * required for Windows 8 to work with AHCI */
1540
1541 if (cmd == CFA_WEAR_LEVEL) {
1542 s->nsector = 0;
1543 }
1544
1545 if (cmd == CFA_ERASE_SECTORS) {
1546 s->media_changed = 1;
1547 }
1548
1549 return true;
1550}
1551
1552static bool cmd_cfa_translate_sector(IDEState *s, uint8_t cmd)
1553{
1554 s->status = READY_STAT | SEEK_STAT;
1555
1556 memset(s->io_buffer, 0, 0x200);
1557 s->io_buffer[0x00] = s->hcyl; /* Cyl MSB */
1558 s->io_buffer[0x01] = s->lcyl; /* Cyl LSB */
1559 s->io_buffer[0x02] = s->select; /* Head */
1560 s->io_buffer[0x03] = s->sector; /* Sector */
1561 s->io_buffer[0x04] = ide_get_sector(s) >> 16; /* LBA MSB */
1562 s->io_buffer[0x05] = ide_get_sector(s) >> 8; /* LBA */
1563 s->io_buffer[0x06] = ide_get_sector(s) >> 0; /* LBA LSB */
1564 s->io_buffer[0x13] = 0x00; /* Erase flag */
1565 s->io_buffer[0x18] = 0x00; /* Hot count */
1566 s->io_buffer[0x19] = 0x00; /* Hot count */
1567 s->io_buffer[0x1a] = 0x01; /* Hot count */
1568
1569 ide_transfer_start(s, s->io_buffer, 0x200, ide_transfer_stop);
1570 ide_set_irq(s->bus);
1571
1572 return false;
1573}
1574
1575static bool cmd_cfa_access_metadata_storage(IDEState *s, uint8_t cmd)
1576{
1577 switch (s->feature) {
1578 case 0x02: /* Inquiry Metadata Storage */
1579 ide_cfata_metadata_inquiry(s);
1580 break;
1581 case 0x03: /* Read Metadata Storage */
1582 ide_cfata_metadata_read(s);
1583 break;
1584 case 0x04: /* Write Metadata Storage */
1585 ide_cfata_metadata_write(s);
1586 break;
1587 default:
1588 ide_abort_command(s);
1589 return true;
1590 }
1591
1592 ide_transfer_start(s, s->io_buffer, 0x200, ide_transfer_stop);
1593 s->status = 0x00; /* NOTE: READY is _not_ set */
1594 ide_set_irq(s->bus);
1595
1596 return false;
1597}
1598
1599static bool cmd_ibm_sense_condition(IDEState *s, uint8_t cmd)
1600{
1601 switch (s->feature) {
1602 case 0x01: /* sense temperature in device */
1603 s->nsector = 0x50; /* +20 C */
1604 break;
1605 default:
1606 ide_abort_command(s);
1607 return true;
1608 }
1609
1610 return true;
1611}
1612
ff352677
KW		 1613
1614/*** SMART commands ***/
1615
1616static bool cmd_smart(IDEState *s, uint8_t cmd)
1617{
1618 int n;
1619
1620 if (s->hcyl != 0xc2 || s->lcyl != 0x4f) {
1621 goto abort_cmd;
1622 }
1623
1624 if (!s->smart_enabled && s->feature != SMART_ENABLE) {
1625 goto abort_cmd;
1626 }
1627
1628 switch (s->feature) {
1629 case SMART_DISABLE:
1630 s->smart_enabled = 0;
1631 return true;
1632
1633 case SMART_ENABLE:
1634 s->smart_enabled = 1;
1635 return true;
1636
1637 case SMART_ATTR_AUTOSAVE:
1638 switch (s->sector) {
1639 case 0x00:
1640 s->smart_autosave = 0;
1641 break;
1642 case 0xf1:
1643 s->smart_autosave = 1;
1644 break;
1645 default:
1646 goto abort_cmd;
1647 }
1648 return true;
1649
1650 case SMART_STATUS:
1651 if (!s->smart_errors) {
1652 s->hcyl = 0xc2;
1653 s->lcyl = 0x4f;
1654 } else {
1655 s->hcyl = 0x2c;
1656 s->lcyl = 0xf4;
1657 }
1658 return true;
1659
1660 case SMART_READ_THRESH:
1661 memset(s->io_buffer, 0, 0x200);
1662 s->io_buffer[0] = 0x01; /* smart struct version */
1663
1664 for (n = 0; n < ARRAY_SIZE(smart_attributes); n++) {
1665 s->io_buffer[2 + 0 + (n * 12)] = smart_attributes[n][0];
1666 s->io_buffer[2 + 1 + (n * 12)] = smart_attributes[n][11];
1667 }
1668
1669 /* checksum */
1670 for (n = 0; n < 511; n++) {
1671 s->io_buffer[511] += s->io_buffer[n];
1672 }
1673 s->io_buffer[511] = 0x100 - s->io_buffer[511];
1674
1675 s->status = READY_STAT | SEEK_STAT;
1676 ide_transfer_start(s, s->io_buffer, 0x200, ide_transfer_stop);
1677 ide_set_irq(s->bus);
1678 return false;
1679
1680 case SMART_READ_DATA:
1681 memset(s->io_buffer, 0, 0x200);
1682 s->io_buffer[0] = 0x01; /* smart struct version */
1683
1684 for (n = 0; n < ARRAY_SIZE(smart_attributes); n++) {
1685 int i;
1686 for (i = 0; i < 11; i++) {
1687 s->io_buffer[2 + i + (n * 12)] = smart_attributes[n][i];
1688 }
1689 }
1690
1691 s->io_buffer[362] = 0x02 | (s->smart_autosave ? 0x80 : 0x00);
1692 if (s->smart_selftest_count == 0) {
1693 s->io_buffer[363] = 0;
1694 } else {
1695 s->io_buffer[363] =
1696 s->smart_selftest_data[3 +
1697 (s->smart_selftest_count - 1) *
1698 24];
1699 }
1700 s->io_buffer[364] = 0x20;
1701 s->io_buffer[365] = 0x01;
1702 /* offline data collection capacity: execute + self-test*/
1703 s->io_buffer[367] = (1 << 4 | 1 << 3 | 1);
1704 s->io_buffer[368] = 0x03; /* smart capability (1) */
1705 s->io_buffer[369] = 0x00; /* smart capability (2) */
1706 s->io_buffer[370] = 0x01; /* error logging supported */
1707 s->io_buffer[372] = 0x02; /* minutes for poll short test */
1708 s->io_buffer[373] = 0x36; /* minutes for poll ext test */
1709 s->io_buffer[374] = 0x01; /* minutes for poll conveyance */
1710
1711 for (n = 0; n < 511; n++) {
1712 s->io_buffer[511] += s->io_buffer[n];
1713 }
1714 s->io_buffer[511] = 0x100 - s->io_buffer[511];
1715
1716 s->status = READY_STAT | SEEK_STAT;
1717 ide_transfer_start(s, s->io_buffer, 0x200, ide_transfer_stop);
1718 ide_set_irq(s->bus);
1719 return false;
1720
1721 case SMART_READ_LOG:
1722 switch (s->sector) {
1723 case 0x01: /* summary smart error log */
1724 memset(s->io_buffer, 0, 0x200);
1725 s->io_buffer[0] = 0x01;
1726 s->io_buffer[1] = 0x00; /* no error entries */
1727 s->io_buffer[452] = s->smart_errors & 0xff;
1728 s->io_buffer[453] = (s->smart_errors & 0xff00) >> 8;
1729
1730 for (n = 0; n < 511; n++) {
1731 s->io_buffer[511] += s->io_buffer[n];
1732 }
1733 s->io_buffer[511] = 0x100 - s->io_buffer[511];
1734 break;
1735 case 0x06: /* smart self test log */
1736 memset(s->io_buffer, 0, 0x200);
1737 s->io_buffer[0] = 0x01;
1738 if (s->smart_selftest_count == 0) {
1739 s->io_buffer[508] = 0;
1740 } else {
1741 s->io_buffer[508] = s->smart_selftest_count;
1742 for (n = 2; n < 506; n++) {
1743 s->io_buffer[n] = s->smart_selftest_data[n];
1744 }
1745 }
1746
1747 for (n = 0; n < 511; n++) {
1748 s->io_buffer[511] += s->io_buffer[n];
1749 }
1750 s->io_buffer[511] = 0x100 - s->io_buffer[511];
1751 break;
1752 default:
1753 goto abort_cmd;
1754 }
1755 s->status = READY_STAT | SEEK_STAT;
1756 ide_transfer_start(s, s->io_buffer, 0x200, ide_transfer_stop);
1757 ide_set_irq(s->bus);
1758 return false;
1759
1760 case SMART_EXECUTE_OFFLINE:
1761 switch (s->sector) {
1762 case 0: /* off-line routine */
1763 case 1: /* short self test */
1764 case 2: /* extended self test */
1765 s->smart_selftest_count++;
1766 if (s->smart_selftest_count > 21) {
940973ae 1767 s->smart_selftest_count = 1;
ff352677
KW		 1768 }
1769 n = 2 + (s->smart_selftest_count - 1) * 24;
1770 s->smart_selftest_data[n] = s->sector;
1771 s->smart_selftest_data[n + 1] = 0x00; /* OK and finished */
1772 s->smart_selftest_data[n + 2] = 0x34; /* hour count lsb */
1773 s->smart_selftest_data[n + 3] = 0x12; /* hour count msb */
1774 break;
1775 default:
1776 goto abort_cmd;
1777 }
1778 return true;
1779 }
1780
1781abort_cmd:
1782 ide_abort_command(s);
1783 return true;
1784}
1785
844505b1
MA		 1786#define HD_OK (1u << IDE_HD)
1787#define CD_OK (1u << IDE_CD)
1788#define CFA_OK (1u << IDE_CFATA)
1789#define HD_CFA_OK (HD_OK | CFA_OK)
1790#define ALL_OK (HD_OK | CD_OK | CFA_OK)
1791
a0436e92
KW		 1792/* Set the Disk Seek Completed status bit during completion */
1793#define SET_DSC (1u << 8)
1794
844505b1 1795/* See ACS-2 T13/2015-D Table B.2 Command codes */
a0436e92
KW		 1796static const struct {
1797 /* Returns true if the completion code should be run */
1798 bool (*handler)(IDEState *s, uint8_t cmd);
1799 int flags;
1800} ide_cmd_table[0x100] = {
844505b1 1801 /* NOP not implemented, mandatory for CD */
6b1dd744 1802 [CFA_REQ_EXT_ERROR_CODE] = { cmd_cfa_req_ext_error_code, CFA_OK },
d9033e1d 1803 [WIN_DSM] = { cmd_data_set_management, HD_CFA_OK },
ee425c78 1804 [WIN_DEVICE_RESET] = { cmd_device_reset, CD_OK },
b300337e 1805 [WIN_RECAL] = { cmd_nop, HD_CFA_OK | SET_DSC},
0e6498ed 1806 [WIN_READ] = { cmd_read_pio, ALL_OK },
d9033e1d 1807 [WIN_READ_ONCE] = { cmd_read_pio, HD_CFA_OK },
0e6498ed 1808 [WIN_READ_EXT] = { cmd_read_pio, HD_CFA_OK },
92a6a6f6 1809 [WIN_READDMA_EXT] = { cmd_read_dma, HD_CFA_OK },
63a82e6a 1810 [WIN_READ_NATIVE_MAX_EXT] = { cmd_read_native_max, HD_CFA_OK | SET_DSC },
adf3a2c4 1811 [WIN_MULTREAD_EXT] = { cmd_read_multiple, HD_CFA_OK },
0e6498ed
KW		 1812 [WIN_WRITE] = { cmd_write_pio, HD_CFA_OK },
1813 [WIN_WRITE_ONCE] = { cmd_write_pio, HD_CFA_OK },
1814 [WIN_WRITE_EXT] = { cmd_write_pio, HD_CFA_OK },
92a6a6f6 1815 [WIN_WRITEDMA_EXT] = { cmd_write_dma, HD_CFA_OK },
0e6498ed 1816 [CFA_WRITE_SECT_WO_ERASE] = { cmd_write_pio, CFA_OK },
adf3a2c4 1817 [WIN_MULTWRITE_EXT] = { cmd_write_multiple, HD_CFA_OK },
0e6498ed 1818 [WIN_WRITE_VERIFY] = { cmd_write_pio, HD_CFA_OK },
413860cf
KW		 1819 [WIN_VERIFY] = { cmd_verify, HD_CFA_OK | SET_DSC },
1820 [WIN_VERIFY_ONCE] = { cmd_verify, HD_CFA_OK | SET_DSC },
1821 [WIN_VERIFY_EXT] = { cmd_verify, HD_CFA_OK | SET_DSC },
61fdda37 1822 [WIN_SEEK] = { cmd_seek, HD_CFA_OK | SET_DSC },
6b1dd744 1823 [CFA_TRANSLATE_SECTOR] = { cmd_cfa_translate_sector, CFA_OK },
ee425c78 1824 [WIN_DIAGNOSE] = { cmd_exec_dev_diagnostic, ALL_OK },
b300337e 1825 [WIN_SPECIFY] = { cmd_nop, HD_CFA_OK | SET_DSC },
d9033e1d
JS		 1826 [WIN_STANDBYNOW2] = { cmd_nop, HD_CFA_OK },
1827 [WIN_IDLEIMMEDIATE2] = { cmd_nop, HD_CFA_OK },
1828 [WIN_STANDBY2] = { cmd_nop, HD_CFA_OK },
1829 [WIN_SETIDLE2] = { cmd_nop, HD_CFA_OK },
1830 [WIN_CHECKPOWERMODE2] = { cmd_check_power_mode, HD_CFA_OK | SET_DSC },
1831 [WIN_SLEEPNOW2] = { cmd_nop, HD_CFA_OK },
ee425c78
KW		 1832 [WIN_PACKETCMD] = { cmd_packet, CD_OK },
1833 [WIN_PIDENTIFY] = { cmd_identify_packet, CD_OK },
ff352677 1834 [WIN_SMART] = { cmd_smart, HD_CFA_OK | SET_DSC },
6b1dd744
KW		 1835 [CFA_ACCESS_METADATA_STORAGE] = { cmd_cfa_access_metadata_storage, CFA_OK },
1836 [CFA_ERASE_SECTORS] = { cmd_cfa_erase_sectors, CFA_OK | SET_DSC },
adf3a2c4
KW		 1837 [WIN_MULTREAD] = { cmd_read_multiple, HD_CFA_OK },
1838 [WIN_MULTWRITE] = { cmd_write_multiple, HD_CFA_OK },
1839 [WIN_SETMULT] = { cmd_set_multiple_mode, HD_CFA_OK | SET_DSC },
92a6a6f6
KW		 1840 [WIN_READDMA] = { cmd_read_dma, HD_CFA_OK },
1841 [WIN_READDMA_ONCE] = { cmd_read_dma, HD_CFA_OK },
1842 [WIN_WRITEDMA] = { cmd_write_dma, HD_CFA_OK },
1843 [WIN_WRITEDMA_ONCE] = { cmd_write_dma, HD_CFA_OK },
adf3a2c4 1844 [CFA_WRITE_MULTI_WO_ERASE] = { cmd_write_multiple, CFA_OK },
d9033e1d
JS		 1845 [WIN_STANDBYNOW1] = { cmd_nop, HD_CFA_OK },
1846 [WIN_IDLEIMMEDIATE] = { cmd_nop, HD_CFA_OK },
1847 [WIN_STANDBY] = { cmd_nop, HD_CFA_OK },
1848 [WIN_SETIDLE1] = { cmd_nop, HD_CFA_OK },
1849 [WIN_CHECKPOWERMODE1] = { cmd_check_power_mode, HD_CFA_OK | SET_DSC },
1850 [WIN_SLEEPNOW1] = { cmd_nop, HD_CFA_OK },
9afce429
KW		 1851 [WIN_FLUSH_CACHE] = { cmd_flush_cache, ALL_OK },
1852 [WIN_FLUSH_CACHE_EXT] = { cmd_flush_cache, HD_CFA_OK },
1c66869a 1853 [WIN_IDENTIFY] = { cmd_identify, ALL_OK },
ee03398c 1854 [WIN_SETFEATURES] = { cmd_set_features, ALL_OK | SET_DSC },
6b1dd744
KW		 1855 [IBM_SENSE_CONDITION] = { cmd_ibm_sense_condition, CFA_OK | SET_DSC },
1856 [CFA_WEAR_LEVEL] = { cmd_cfa_erase_sectors, HD_CFA_OK | SET_DSC },
d9033e1d 1857 [WIN_READ_NATIVE_MAX] = { cmd_read_native_max, HD_CFA_OK | SET_DSC },
844505b1
MA		 1858};
1859
1860static bool ide_cmd_permitted(IDEState *s, uint32_t cmd)
1861{
1862 return cmd < ARRAY_SIZE(ide_cmd_table)
a0436e92 1863 && (ide_cmd_table[cmd].flags & (1u << s->drive_kind));
844505b1 1864}
7cff87ff
AG		 1865
1866void ide_exec_cmd(IDEBus *bus, uint32_t val)
1867{
1868 IDEState *s;
dfe1ea8f 1869 bool complete;
7cff87ff 1870
5391d806 1871#if defined(DEBUG_IDE)
6ef2ba5e 1872 printf("ide: CMD=%02x\n", val);
5391d806 1873#endif
6ef2ba5e 1874 s = idebus_active_if(bus);
66a0a2cb 1875 /* ignore commands to non existent slave */
4be74634 1876 if (s != bus->ifs && !s->blk) {
6ef2ba5e 1877 return;
4be74634 1878 }
c2ff060f 1879
6ef2ba5e
AG		 1880 /* Only DEVICE RESET is allowed while BSY or/and DRQ are set */
1881 if ((s->status & (BUSY_STAT|DRQ_STAT)) && val != WIN_DEVICE_RESET)
1882 return;
fcdd25ab 1883
844505b1 1884 if (!ide_cmd_permitted(s, val)) {
dfe1ea8f
KW		 1885 ide_abort_command(s);
1886 ide_set_irq(s->bus);
1887 return;
844505b1
MA		 1888 }
1889
dfe1ea8f
KW		 1890 s->status = READY_STAT | BUSY_STAT;
1891 s->error = 0;
36334faf 1892 s->io_buffer_offset = 0;
a0436e92 1893
dfe1ea8f
KW		 1894 complete = ide_cmd_table[val].handler(s, val);
1895 if (complete) {
1896 s->status &= ~BUSY_STAT;
1897 assert(!!s->error == !!(s->status & ERR_STAT));
a0436e92 1898
dfe1ea8f
KW		 1899 if ((ide_cmd_table[val].flags & SET_DSC) && !s->error) {
1900 s->status |= SEEK_STAT;
a0436e92
KW		 1901 }
1902
c7e73adb 1903 ide_cmd_done(s);
6ef2ba5e 1904 ide_set_irq(s->bus);
6ef2ba5e 1905 }
5391d806
FB		 1906}
1907
356721ae 1908uint32_t ide_ioport_read(void *opaque, uint32_t addr1)
5391d806 1909{
bcbdc4d3
GH		 1910 IDEBus *bus = opaque;
1911 IDEState *s = idebus_active_if(bus);
5391d806 1912 uint32_t addr;
c2ff060f 1913 int ret, hob;
5391d806
FB		 1914
1915 addr = addr1 & 7;
c2ff060f
FB		 1916 /* FIXME: HOB readback uses bit 7, but it's always set right now */
1917 //hob = s->select & (1 << 7);
1918 hob = 0;
5391d806
FB		 1919 switch(addr) {
1920 case 0:
1921 ret = 0xff;
1922 break;
1923 case 1:
4be74634
MA		 1924 if ((!bus->ifs[0].blk && !bus->ifs[1].blk) ||
1925 (s != bus->ifs && !s->blk)) {
c45c3d00 1926 ret = 0;
4be74634 1927 } else if (!hob) {
c45c3d00 1928 ret = s->error;
4be74634 1929 } else {
c2ff060f 1930 ret = s->hob_feature;
4be74634 1931 }
5391d806
FB		 1932 break;
1933 case 2:
4be74634 1934 if (!bus->ifs[0].blk && !bus->ifs[1].blk) {
c45c3d00 1935 ret = 0;
4be74634 1936 } else if (!hob) {
c45c3d00 1937 ret = s->nsector & 0xff;
4be74634 1938 } else {
c2ff060f 1939 ret = s->hob_nsector;
4be74634 1940 }
5391d806
FB		 1941 break;
1942 case 3:
4be74634 1943 if (!bus->ifs[0].blk && !bus->ifs[1].blk) {
c45c3d00 1944 ret = 0;
4be74634 1945 } else if (!hob) {
c45c3d00 1946 ret = s->sector;
4be74634 1947 } else {
c2ff060f 1948 ret = s->hob_sector;
4be74634 1949 }
5391d806
FB		 1950 break;
1951 case 4:
4be74634 1952 if (!bus->ifs[0].blk && !bus->ifs[1].blk) {
c45c3d00 1953 ret = 0;
4be74634 1954 } else if (!hob) {
c45c3d00 1955 ret = s->lcyl;
4be74634 1956 } else {
c2ff060f 1957 ret = s->hob_lcyl;
4be74634 1958 }
5391d806
FB		 1959 break;
1960 case 5:
4be74634 1961 if (!bus->ifs[0].blk && !bus->ifs[1].blk) {
c45c3d00 1962 ret = 0;
4be74634 1963 } else if (!hob) {
c45c3d00 1964 ret = s->hcyl;
4be74634 1965 } else {
c2ff060f 1966 ret = s->hob_hcyl;
4be74634 1967 }
5391d806
FB		 1968 break;
1969 case 6:
4be74634 1970 if (!bus->ifs[0].blk && !bus->ifs[1].blk) {
c45c3d00 1971 ret = 0;
4be74634 1972 } else {
7ae98627 1973 ret = s->select;
4be74634 1974 }
5391d806
FB		 1975 break;
1976 default:
1977 case 7:
4be74634
MA		 1978 if ((!bus->ifs[0].blk && !bus->ifs[1].blk) ||
1979 (s != bus->ifs && !s->blk)) {
c45c3d00 1980 ret = 0;
4be74634 1981 } else {
c45c3d00 1982 ret = s->status;
4be74634 1983 }
9cdd03a7 1984 qemu_irq_lower(bus->irq);
5391d806
FB		 1985 break;
1986 }
1987#ifdef DEBUG_IDE
1988 printf("ide: read addr=0x%x val=%02x\n", addr1, ret);
1989#endif
1990 return ret;
1991}
1992
356721ae 1993uint32_t ide_status_read(void *opaque, uint32_t addr)
5391d806 1994{
bcbdc4d3
GH		 1995 IDEBus *bus = opaque;
1996 IDEState *s = idebus_active_if(bus);
5391d806 1997 int ret;
7ae98627 1998
4be74634
MA		 1999 if ((!bus->ifs[0].blk && !bus->ifs[1].blk) ||
2000 (s != bus->ifs && !s->blk)) {
7ae98627 2001 ret = 0;
4be74634 2002 } else {
7ae98627 2003 ret = s->status;
4be74634 2004 }
5391d806
FB		 2005#ifdef DEBUG_IDE
2006 printf("ide: read status addr=0x%x val=%02x\n", addr, ret);
2007#endif
2008 return ret;
2009}
2010
356721ae 2011void ide_cmd_write(void *opaque, uint32_t addr, uint32_t val)
5391d806 2012{
bcbdc4d3 2013 IDEBus *bus = opaque;
5391d806
FB		 2014 IDEState *s;
2015 int i;
2016
2017#ifdef DEBUG_IDE
2018 printf("ide: write control addr=0x%x val=%02x\n", addr, val);
2019#endif
2020 /* common for both drives */
9cdd03a7 2021 if (!(bus->cmd & IDE_CMD_RESET) &&
5391d806
FB		 2022 (val & IDE_CMD_RESET)) {
2023 /* reset low to high */
2024 for(i = 0;i < 2; i++) {
bcbdc4d3 2025 s = &bus->ifs[i];
5391d806
FB		 2026 s->status = BUSY_STAT | SEEK_STAT;
2027 s->error = 0x01;
2028 }
9cdd03a7 2029 } else if ((bus->cmd & IDE_CMD_RESET) &&
5391d806
FB		 2030 !(val & IDE_CMD_RESET)) {
2031 /* high to low */
2032 for(i = 0;i < 2; i++) {
bcbdc4d3 2033 s = &bus->ifs[i];
cd8722bb 2034 if (s->drive_kind == IDE_CD)
6b136f9e
FB		 2035 s->status = 0x00; /* NOTE: READY is _not_ set */
2036 else
56bf1d37 2037 s->status = READY_STAT | SEEK_STAT;
5391d806
FB		 2038 ide_set_signature(s);
2039 }
2040 }
2041
9cdd03a7 2042 bus->cmd = val;
5391d806
FB		 2043}
2044
40c4ed3f
KW		 2045/*
2046 * Returns true if the running PIO transfer is a PIO out (i.e. data is
2047 * transferred from the device to the guest), false if it's a PIO in
2048 */
2049static bool ide_is_pio_out(IDEState *s)
2050{
2051 if (s->end_transfer_func == ide_sector_write ||
2052 s->end_transfer_func == ide_atapi_cmd) {
2053 return false;
2054 } else if (s->end_transfer_func == ide_sector_read ||
2055 s->end_transfer_func == ide_transfer_stop ||
2056 s->end_transfer_func == ide_atapi_cmd_reply_end ||
2057 s->end_transfer_func == ide_dummy_transfer_stop) {
2058 return true;
2059 }
2060
2061 abort();
2062}
2063
356721ae 2064void ide_data_writew(void *opaque, uint32_t addr, uint32_t val)
5391d806 2065{
bcbdc4d3
GH		 2066 IDEBus *bus = opaque;
2067 IDEState *s = idebus_active_if(bus);
5391d806
FB		 2068 uint8_t *p;
2069
40c4ed3f
KW		 2070 /* PIO data access allowed only when DRQ bit is set. The result of a write
2071 * during PIO out is indeterminate, just ignore it. */
2072 if (!(s->status & DRQ_STAT) || ide_is_pio_out(s)) {
fcdd25ab 2073 return;
40c4ed3f 2074 }
fcdd25ab 2075
5391d806 2076 p = s->data_ptr;
d2ff8585
KW		 2077 if (p + 2 > s->data_end) {
2078 return;
2079 }
2080
0c4ad8dc 2081 *(uint16_t *)p = le16_to_cpu(val);
5391d806
FB		 2082 p += 2;
2083 s->data_ptr = p;
cb72cba8
KW		 2084 if (p >= s->data_end) {
2085 s->status &= ~DRQ_STAT;
5391d806 2086 s->end_transfer_func(s);
cb72cba8 2087 }
5391d806
FB		 2088}
2089
356721ae 2090uint32_t ide_data_readw(void *opaque, uint32_t addr)
5391d806 2091{
bcbdc4d3
GH		 2092 IDEBus *bus = opaque;
2093 IDEState *s = idebus_active_if(bus);
5391d806
FB		 2094 uint8_t *p;
2095 int ret;
fcdd25ab 2096
40c4ed3f
KW		 2097 /* PIO data access allowed only when DRQ bit is set. The result of a read
2098 * during PIO in is indeterminate, return 0 and don't move forward. */
2099 if (!(s->status & DRQ_STAT) || !ide_is_pio_out(s)) {
fcdd25ab 2100 return 0;
40c4ed3f 2101 }
fcdd25ab 2102
5391d806 2103 p = s->data_ptr;
d2ff8585
KW		 2104 if (p + 2 > s->data_end) {
2105 return 0;
2106 }
2107
0c4ad8dc 2108 ret = cpu_to_le16(*(uint16_t *)p);
5391d806
FB		 2109 p += 2;
2110 s->data_ptr = p;
cb72cba8
KW		 2111 if (p >= s->data_end) {
2112 s->status &= ~DRQ_STAT;
5391d806 2113 s->end_transfer_func(s);
cb72cba8 2114 }
5391d806
FB		 2115 return ret;
2116}
2117
356721ae 2118void ide_data_writel(void *opaque, uint32_t addr, uint32_t val)
5391d806 2119{
bcbdc4d3
GH		 2120 IDEBus *bus = opaque;
2121 IDEState *s = idebus_active_if(bus);
5391d806
FB		 2122 uint8_t *p;
2123
40c4ed3f
KW		 2124 /* PIO data access allowed only when DRQ bit is set. The result of a write
2125 * during PIO out is indeterminate, just ignore it. */
2126 if (!(s->status & DRQ_STAT) || ide_is_pio_out(s)) {
fcdd25ab 2127 return;
40c4ed3f 2128 }
fcdd25ab 2129
5391d806 2130 p = s->data_ptr;
d2ff8585
KW		 2131 if (p + 4 > s->data_end) {
2132 return;
2133 }
2134
0c4ad8dc 2135 *(uint32_t *)p = le32_to_cpu(val);
5391d806
FB		 2136 p += 4;
2137 s->data_ptr = p;
cb72cba8
KW		 2138 if (p >= s->data_end) {
2139 s->status &= ~DRQ_STAT;
5391d806 2140 s->end_transfer_func(s);
cb72cba8 2141 }
5391d806
FB		 2142}
2143
356721ae 2144uint32_t ide_data_readl(void *opaque, uint32_t addr)
5391d806 2145{
bcbdc4d3
GH		 2146 IDEBus *bus = opaque;
2147 IDEState *s = idebus_active_if(bus);
5391d806
FB		 2148 uint8_t *p;
2149 int ret;
3b46e624 2150
40c4ed3f
KW		 2151 /* PIO data access allowed only when DRQ bit is set. The result of a read
2152 * during PIO in is indeterminate, return 0 and don't move forward. */
2153 if (!(s->status & DRQ_STAT) || !ide_is_pio_out(s)) {
fcdd25ab 2154 return 0;
40c4ed3f 2155 }
fcdd25ab 2156
5391d806 2157 p = s->data_ptr;
d2ff8585
KW		 2158 if (p + 4 > s->data_end) {
2159 return 0;
2160 }
2161
0c4ad8dc 2162 ret = cpu_to_le32(*(uint32_t *)p);
5391d806
FB		 2163 p += 4;
2164 s->data_ptr = p;
cb72cba8
KW		 2165 if (p >= s->data_end) {
2166 s->status &= ~DRQ_STAT;
5391d806 2167 s->end_transfer_func(s);
cb72cba8 2168 }
5391d806
FB		 2169 return ret;
2170}
2171
a7dfe172
FB		 2172static void ide_dummy_transfer_stop(IDEState *s)
2173{
2174 s->data_ptr = s->io_buffer;
2175 s->data_end = s->io_buffer;
2176 s->io_buffer[0] = 0xff;
2177 s->io_buffer[1] = 0xff;
2178 s->io_buffer[2] = 0xff;
2179 s->io_buffer[3] = 0xff;
2180}
2181
4a643563 2182static void ide_reset(IDEState *s)
5391d806 2183{
4a643563
BS		 2184#ifdef DEBUG_IDE
2185 printf("ide: reset\n");
2186#endif
bef0fd59
SH		 2187
2188 if (s->pio_aiocb) {
4be74634 2189 blk_aio_cancel(s->pio_aiocb);
bef0fd59
SH		 2190 s->pio_aiocb = NULL;
2191 }
2192
cd8722bb 2193 if (s->drive_kind == IDE_CFATA)
201a51fc
AZ		 2194 s->mult_sectors = 0;
2195 else
2196 s->mult_sectors = MAX_MULT_SECTORS;
4a643563
BS		 2197 /* ide regs */
2198 s->feature = 0;
2199 s->error = 0;
2200 s->nsector = 0;
2201 s->sector = 0;
2202 s->lcyl = 0;
2203 s->hcyl = 0;
2204
2205 /* lba48 */
2206 s->hob_feature = 0;
2207 s->hob_sector = 0;
2208 s->hob_nsector = 0;
2209 s->hob_lcyl = 0;
2210 s->hob_hcyl = 0;
2211
5391d806 2212 s->select = 0xa0;
41a2b959 2213 s->status = READY_STAT | SEEK_STAT;
4a643563
BS		 2214
2215 s->lba48 = 0;
2216
2217 /* ATAPI specific */
2218 s->sense_key = 0;
2219 s->asc = 0;
2220 s->cdrom_changed = 0;
2221 s->packet_transfer_size = 0;
2222 s->elementary_transfer_size = 0;
2223 s->io_buffer_index = 0;
2224 s->cd_sector_size = 0;
2225 s->atapi_dma = 0;
a7f3d65b
PH		 2226 s->tray_locked = 0;
2227 s->tray_open = 0;
4a643563
BS		 2228 /* ATA DMA state */
2229 s->io_buffer_size = 0;
2230 s->req_nb_sectors = 0;
2231
5391d806 2232 ide_set_signature(s);
a7dfe172
FB		 2233 /* init the transfer handler so that 0xffff is returned on data
2234 accesses */
2235 s->end_transfer_func = ide_dummy_transfer_stop;
2236 ide_dummy_transfer_stop(s);
201a51fc 2237 s->media_changed = 0;
5391d806
FB		 2238}
2239
4a643563
BS		 2240void ide_bus_reset(IDEBus *bus)
2241{
2242 bus->unit = 0;
2243 bus->cmd = 0;
2244 ide_reset(&bus->ifs[0]);
2245 ide_reset(&bus->ifs[1]);
2246 ide_clear_hob(bus);
40a6238a
AG		 2247
2248 /* pending async DMA */
2249 if (bus->dma->aiocb) {
2250#ifdef DEBUG_AIO
2251 printf("aio_cancel\n");
2252#endif
4be74634 2253 blk_aio_cancel(bus->dma->aiocb);
40a6238a
AG		 2254 bus->dma->aiocb = NULL;
2255 }
2256
2257 /* reset dma provider too */
1374bec0
PB		 2258 if (bus->dma->ops->reset) {
2259 bus->dma->ops->reset(bus->dma);
2260 }
4a643563
BS		 2261}
2262
e4def80b
MA		 2263static bool ide_cd_is_tray_open(void *opaque)
2264{
2265 return ((IDEState *)opaque)->tray_open;
2266}
2267
f107639a
MA		 2268static bool ide_cd_is_medium_locked(void *opaque)
2269{
2270 return ((IDEState *)opaque)->tray_locked;
2271}
2272
01ce352e
JS		 2273static void ide_resize_cb(void *opaque)
2274{
2275 IDEState *s = opaque;
2276 uint64_t nb_sectors;
2277
2278 if (!s->identify_set) {
2279 return;
2280 }
2281
4be74634 2282 blk_get_geometry(s->blk, &nb_sectors);
01ce352e
JS		 2283 s->nb_sectors = nb_sectors;
2284
2285 /* Update the identify data buffer. */
2286 if (s->drive_kind == IDE_CFATA) {
2287 ide_cfata_identify_size(s);
2288 } else {
2289 /* IDE_CD uses a different set of callbacks entirely. */
2290 assert(s->drive_kind != IDE_CD);
2291 ide_identify_size(s);
2292 }
2293}
2294
0e49de52 2295static const BlockDevOps ide_cd_block_ops = {
145feb17 2296 .change_media_cb = ide_cd_change_cb,
2df0a3a3 2297 .eject_request_cb = ide_cd_eject_request_cb,
e4def80b 2298 .is_tray_open = ide_cd_is_tray_open,
f107639a 2299 .is_medium_locked = ide_cd_is_medium_locked,
0e49de52
MA		 2300};
2301
01ce352e
JS		 2302static const BlockDevOps ide_hd_block_ops = {
2303 .resize_cb = ide_resize_cb,
2304};
2305
4be74634 2306int ide_init_drive(IDEState *s, BlockBackend *blk, IDEDriveKind kind,
95ebda85 2307 const char *version, const char *serial, const char *model,
ba801960
MA		 2308 uint64_t wwn,
2309 uint32_t cylinders, uint32_t heads, uint32_t secs,
2310 int chs_trans)
88804180 2311{
88804180
GH		 2312 uint64_t nb_sectors;
2313
4be74634 2314 s->blk = blk;
1f56e32a
MA		 2315 s->drive_kind = kind;
2316
4be74634 2317 blk_get_geometry(blk, &nb_sectors);
870111c8
MA		 2318 s->cylinders = cylinders;
2319 s->heads = heads;
2320 s->sectors = secs;
ba801960 2321 s->chs_trans = chs_trans;
870111c8 2322 s->nb_sectors = nb_sectors;
95ebda85 2323 s->wwn = wwn;
870111c8
MA		 2324 /* The SMART values should be preserved across power cycles
2325 but they aren't. */
2326 s->smart_enabled = 1;
2327 s->smart_autosave = 1;
2328 s->smart_errors = 0;
2329 s->smart_selftest_count = 0;
1f56e32a 2330 if (kind == IDE_CD) {
4be74634
MA		 2331 blk_set_dev_ops(blk, &ide_cd_block_ops, s);
2332 blk_set_guest_block_size(blk, 2048);
7aa9c811 2333 } else {
4be74634 2334 if (!blk_is_inserted(s->blk)) {
98f28ad7
MA		 2335 error_report("Device needs media, but drive is empty");
2336 return -1;
2337 }
4be74634 2338 if (blk_is_read_only(blk)) {
7aa9c811
MA		 2339 error_report("Can't use a read-only drive");
2340 return -1;
2341 }
4be74634 2342 blk_set_dev_ops(blk, &ide_hd_block_ops, s);
88804180 2343 }
f8b6cc00 2344 if (serial) {
aa2c91bd 2345 pstrcpy(s->drive_serial_str, sizeof(s->drive_serial_str), serial);
6ced55a5 2346 } else {
88804180
GH		 2347 snprintf(s->drive_serial_str, sizeof(s->drive_serial_str),
2348 "QM%05d", s->drive_serial);
870111c8 2349 }
27e0c9a1
FB		 2350 if (model) {
2351 pstrcpy(s->drive_model_str, sizeof(s->drive_model_str), model);
2352 } else {
2353 switch (kind) {
2354 case IDE_CD:
2355 strcpy(s->drive_model_str, "QEMU DVD-ROM");
2356 break;
2357 case IDE_CFATA:
2358 strcpy(s->drive_model_str, "QEMU MICRODRIVE");
2359 break;
2360 default:
2361 strcpy(s->drive_model_str, "QEMU HARDDISK");
2362 break;
2363 }
2364 }
2365
47c06340
GH		 2366 if (version) {
2367 pstrcpy(s->version, sizeof(s->version), version);
2368 } else {
35c2c8dc 2369 pstrcpy(s->version, sizeof(s->version), qemu_hw_version());
47c06340 2370 }
40a6238a 2371
88804180 2372 ide_reset(s);
4be74634 2373 blk_iostatus_enable(blk);
c4d74df7 2374 return 0;
88804180
GH		 2375}
2376
57234ee4 2377static void ide_init1(IDEBus *bus, int unit)
d459da0e
MA		 2378{
2379 static int drive_serial = 1;
2380 IDEState *s = &bus->ifs[unit];
2381
2382 s->bus = bus;
2383 s->unit = unit;
2384 s->drive_serial = drive_serial++;
1b2adf28 2385 /* we need at least 2k alignment for accessing CDROMs using O_DIRECT */
50641c5c 2386 s->io_buffer_total_len = IDE_DMA_BUF_SECTORS*512 + 4;
c925400b
KW		 2387 s->io_buffer = qemu_memalign(2048, s->io_buffer_total_len);
2388 memset(s->io_buffer, 0, s->io_buffer_total_len);
2389
4be74634 2390 s->smart_selftest_data = blk_blockalign(s->blk, 512);
c925400b
KW		 2391 memset(s->smart_selftest_data, 0, 512);
2392
bc72ad67 2393 s->sector_write_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL,
d459da0e 2394 ide_sector_write_timer_cb, s);
57234ee4
MA		 2395}
2396
40a6238a
AG		 2397static int ide_nop_int(IDEDMA *dma, int x)
2398{
2399 return 0;
2400}
2401
9898586d
PB		 2402static void ide_nop(IDEDMA *dma)
2403{
2404}
2405
a718978e 2406static int32_t ide_nop_int32(IDEDMA *dma, int32_t l)
3251bdcf
JS		 2407{
2408 return 0;
2409}
2410
40a6238a 2411static const IDEDMAOps ide_dma_nop_ops = {
3251bdcf 2412 .prepare_buf = ide_nop_int32,
9898586d 2413 .restart_dma = ide_nop,
40a6238a 2414 .rw_buf = ide_nop_int,
40a6238a
AG		 2415};
2416
9898586d
PB		 2417static void ide_restart_dma(IDEState *s, enum ide_dma_cmd dma_cmd)
2418{
a96cb236 2419 s->unit = s->bus->retry_unit;
dc5d0af4
PB		 2420 ide_set_sector(s, s->bus->retry_sector_num);
2421 s->nsector = s->bus->retry_nsector;
9898586d 2422 s->bus->dma->ops->restart_dma(s->bus->dma);
9898586d
PB		 2423 s->io_buffer_size = 0;
2424 s->dma_cmd = dma_cmd;
2425 ide_start_dma(s, ide_dma_cb);
2426}
2427
2428static void ide_restart_bh(void *opaque)
2429{
2430 IDEBus *bus = opaque;
2431 IDEState *s;
2432 bool is_read;
2433 int error_status;
2434
2435 qemu_bh_delete(bus->bh);
2436 bus->bh = NULL;
2437
2438 error_status = bus->error_status;
2439 if (bus->error_status == 0) {
2440 return;
2441 }
2442
2443 s = idebus_active_if(bus);
2444 is_read = (bus->error_status & IDE_RETRY_READ) != 0;
2445
2446 /* The error status must be cleared before resubmitting the request: The
2447 * request may fail again, and this case can only be distinguished if the
2448 * called function can set a new error status. */
2449 bus->error_status = 0;
2450
7c03a691
JS		 2451 /* The HBA has generically asked to be kicked on retry */
2452 if (error_status & IDE_RETRY_HBA) {
2453 if (s->bus->dma->ops->restart) {
2454 s->bus->dma->ops->restart(s->bus->dma);
2455 }
2456 }
2457
9898586d
PB		 2458 if (error_status & IDE_RETRY_DMA) {
2459 if (error_status & IDE_RETRY_TRIM) {
2460 ide_restart_dma(s, IDE_DMA_TRIM);
2461 } else {
2462 ide_restart_dma(s, is_read ? IDE_DMA_READ : IDE_DMA_WRITE);
2463 }
2464 } else if (error_status & IDE_RETRY_PIO) {
2465 if (is_read) {
2466 ide_sector_read(s);
2467 } else {
2468 ide_sector_write(s);
2469 }
2470 } else if (error_status & IDE_RETRY_FLUSH) {
2471 ide_flush_cache(s);
2472 } else {
2473 /*
2474 * We've not got any bits to tell us about ATAPI - but
2475 * we do have the end_transfer_func that tells us what
2476 * we're trying to do.
2477 */
2478 if (s->end_transfer_func == ide_atapi_cmd) {
2479 ide_atapi_dma_restart(s);
2480 }
2481 }
2482}
2483
2484static void ide_restart_cb(void *opaque, int running, RunState state)
2485{
2486 IDEBus *bus = opaque;
2487
2488 if (!running)
2489 return;
2490
2491 if (!bus->bh) {
2492 bus->bh = qemu_bh_new(ide_restart_bh, bus);
2493 qemu_bh_schedule(bus->bh);
2494 }
2495}
2496
f878c916
PB		 2497void ide_register_restart_cb(IDEBus *bus)
2498{
9898586d
PB		 2499 if (bus->dma->ops->restart_dma) {
2500 qemu_add_vm_change_state_handler(ide_restart_cb, bus);
2501 }
f878c916
PB		 2502}
2503
40a6238a
AG		 2504static IDEDMA ide_dma_nop = {
2505 .ops = &ide_dma_nop_ops,
2506 .aiocb = NULL,
2507};
2508
57234ee4
MA		 2509void ide_init2(IDEBus *bus, qemu_irq irq)
2510{
2511 int i;
2512
2513 for(i = 0; i < 2; i++) {
2514 ide_init1(bus, i);
2515 ide_reset(&bus->ifs[i]);
870111c8 2516 }
57234ee4 2517 bus->irq = irq;
40a6238a 2518 bus->dma = &ide_dma_nop;
d459da0e
MA		 2519}
2520
4a91d3b3
RH		 2521static const MemoryRegionPortio ide_portio_list[] = {
2522 { 0, 8, 1, .read = ide_ioport_read, .write = ide_ioport_write },
e477317c
PB		 2523 { 0, 1, 2, .read = ide_data_readw, .write = ide_data_writew },
2524 { 0, 1, 4, .read = ide_data_readl, .write = ide_data_writel },
4a91d3b3
RH		 2525 PORTIO_END_OF_LIST(),
2526};
2527
2528static const MemoryRegionPortio ide_portio2_list[] = {
2529 { 0, 1, 1, .read = ide_status_read, .write = ide_cmd_write },
2530 PORTIO_END_OF_LIST(),
2531};
2532
2533void ide_init_ioport(IDEBus *bus, ISADevice *dev, int iobase, int iobase2)
69b91039 2534{
4a91d3b3
RH		 2535 /* ??? Assume only ISA and PCI configurations, and that the PCI-ISA
2536 bridge has been setup properly to always register with ISA. */
2537 isa_register_portio_list(dev, iobase, ide_portio_list, bus, "ide");
2538
caed8802 2539 if (iobase2) {
4a91d3b3 2540 isa_register_portio_list(dev, iobase2, ide_portio2_list, bus, "ide");
5391d806 2541 }
5391d806 2542}
69b91039 2543
37159f13 2544static bool is_identify_set(void *opaque, int version_id)
aa941b94 2545{
37159f13
JQ		 2546 IDEState *s = opaque;
2547
2548 return s->identify_set != 0;
2549}
2550
50641c5c
JQ		 2551static EndTransferFunc* transfer_end_table[] = {
2552 ide_sector_read,
2553 ide_sector_write,
2554 ide_transfer_stop,
2555 ide_atapi_cmd_reply_end,
2556 ide_atapi_cmd,
2557 ide_dummy_transfer_stop,
2558};
2559
2560static int transfer_end_table_idx(EndTransferFunc *fn)
2561{
2562 int i;
2563
2564 for (i = 0; i < ARRAY_SIZE(transfer_end_table); i++)
2565 if (transfer_end_table[i] == fn)
2566 return i;
2567
2568 return -1;
2569}
2570
37159f13 2571static int ide_drive_post_load(void *opaque, int version_id)
aa941b94 2572{
37159f13
JQ		 2573 IDEState *s = opaque;
2574
6b896ab2 2575 if (s->blk && s->identify_set) {
4be74634 2576 blk_set_enable_write_cache(s->blk, !!(s->identify_data[85] & (1 << 5)));
7cdd481c 2577 }
37159f13 2578 return 0;
aa941b94
AZ		 2579}
2580
50641c5c
JQ		 2581static int ide_drive_pio_post_load(void *opaque, int version_id)
2582{
2583 IDEState *s = opaque;
2584
fb60105d 2585 if (s->end_transfer_fn_idx >= ARRAY_SIZE(transfer_end_table)) {
50641c5c
JQ		 2586 return -EINVAL;
2587 }
2588 s->end_transfer_func = transfer_end_table[s->end_transfer_fn_idx];
2589 s->data_ptr = s->io_buffer + s->cur_io_buffer_offset;
2590 s->data_end = s->data_ptr + s->cur_io_buffer_len;
819fa276 2591 s->atapi_dma = s->feature & 1; /* as per cmd_packet */
50641c5c
JQ		 2592
2593 return 0;
2594}
2595
2596static void ide_drive_pio_pre_save(void *opaque)
2597{
2598 IDEState *s = opaque;
2599 int idx;
2600
2601 s->cur_io_buffer_offset = s->data_ptr - s->io_buffer;
2602 s->cur_io_buffer_len = s->data_end - s->data_ptr;
2603
2604 idx = transfer_end_table_idx(s->end_transfer_func);
2605 if (idx == -1) {
2606 fprintf(stderr, "%s: invalid end_transfer_func for DRQ_STAT\n",
2607 __func__);
2608 s->end_transfer_fn_idx = 2;
2609 } else {
2610 s->end_transfer_fn_idx = idx;
2611 }
2612}
2613
2614static bool ide_drive_pio_state_needed(void *opaque)
2615{
2616 IDEState *s = opaque;
2617
fdc650d7 2618 return ((s->status & DRQ_STAT) != 0)
fd648f10 2619 || (s->bus->error_status & IDE_RETRY_PIO);
50641c5c
JQ		 2620}
2621
db118fe7
MA		 2622static bool ide_tray_state_needed(void *opaque)
2623{
2624 IDEState *s = opaque;
2625
2626 return s->tray_open || s->tray_locked;
2627}
2628
996faf1a
AS		 2629static bool ide_atapi_gesn_needed(void *opaque)
2630{
2631 IDEState *s = opaque;
2632
2633 return s->events.new_media || s->events.eject_request;
2634}
2635
def93791
KW		 2636static bool ide_error_needed(void *opaque)
2637{
2638 IDEBus *bus = opaque;
2639
2640 return (bus->error_status != 0);
2641}
2642
996faf1a 2643/* Fields for GET_EVENT_STATUS_NOTIFICATION ATAPI command */
656fbeff 2644static const VMStateDescription vmstate_ide_atapi_gesn_state = {
996faf1a
AS		 2645 .name ="ide_drive/atapi/gesn_state",
2646 .version_id = 1,
2647 .minimum_version_id = 1,
5cd8cada 2648 .needed = ide_atapi_gesn_needed,
35d08458 2649 .fields = (VMStateField[]) {
996faf1a
AS		 2650 VMSTATE_BOOL(events.new_media, IDEState),
2651 VMSTATE_BOOL(events.eject_request, IDEState),
0754f9ec 2652 VMSTATE_END_OF_LIST()
996faf1a
AS		 2653 }
2654};
2655
db118fe7
MA		 2656static const VMStateDescription vmstate_ide_tray_state = {
2657 .name = "ide_drive/tray_state",
2658 .version_id = 1,
2659 .minimum_version_id = 1,
5cd8cada 2660 .needed = ide_tray_state_needed,
db118fe7
MA		 2661 .fields = (VMStateField[]) {
2662 VMSTATE_BOOL(tray_open, IDEState),
2663 VMSTATE_BOOL(tray_locked, IDEState),
2664 VMSTATE_END_OF_LIST()
2665 }
2666};
2667
656fbeff 2668static const VMStateDescription vmstate_ide_drive_pio_state = {
50641c5c
JQ		 2669 .name = "ide_drive/pio_state",
2670 .version_id = 1,
2671 .minimum_version_id = 1,
50641c5c
JQ		 2672 .pre_save = ide_drive_pio_pre_save,
2673 .post_load = ide_drive_pio_post_load,
5cd8cada 2674 .needed = ide_drive_pio_state_needed,
35d08458 2675 .fields = (VMStateField[]) {
50641c5c
JQ		 2676 VMSTATE_INT32(req_nb_sectors, IDEState),
2677 VMSTATE_VARRAY_INT32(io_buffer, IDEState, io_buffer_total_len, 1,
2678 vmstate_info_uint8, uint8_t),
2679 VMSTATE_INT32(cur_io_buffer_offset, IDEState),
2680 VMSTATE_INT32(cur_io_buffer_len, IDEState),
2681 VMSTATE_UINT8(end_transfer_fn_idx, IDEState),
2682 VMSTATE_INT32(elementary_transfer_size, IDEState),
2683 VMSTATE_INT32(packet_transfer_size, IDEState),
2684 VMSTATE_END_OF_LIST()
2685 }
2686};
2687
37159f13
JQ		 2688const VMStateDescription vmstate_ide_drive = {
2689 .name = "ide_drive",
3abb6260 2690 .version_id = 3,
37159f13 2691 .minimum_version_id = 0,
37159f13 2692 .post_load = ide_drive_post_load,
35d08458 2693 .fields = (VMStateField[]) {
37159f13
JQ		 2694 VMSTATE_INT32(mult_sectors, IDEState),
2695 VMSTATE_INT32(identify_set, IDEState),
2696 VMSTATE_BUFFER_TEST(identify_data, IDEState, is_identify_set),
2697 VMSTATE_UINT8(feature, IDEState),
2698 VMSTATE_UINT8(error, IDEState),
2699 VMSTATE_UINT32(nsector, IDEState),
2700 VMSTATE_UINT8(sector, IDEState),
2701 VMSTATE_UINT8(lcyl, IDEState),
2702 VMSTATE_UINT8(hcyl, IDEState),
2703 VMSTATE_UINT8(hob_feature, IDEState),
2704 VMSTATE_UINT8(hob_sector, IDEState),
2705 VMSTATE_UINT8(hob_nsector, IDEState),
2706 VMSTATE_UINT8(hob_lcyl, IDEState),
2707 VMSTATE_UINT8(hob_hcyl, IDEState),
2708 VMSTATE_UINT8(select, IDEState),
2709 VMSTATE_UINT8(status, IDEState),
2710 VMSTATE_UINT8(lba48, IDEState),
2711 VMSTATE_UINT8(sense_key, IDEState),
2712 VMSTATE_UINT8(asc, IDEState),
2713 VMSTATE_UINT8_V(cdrom_changed, IDEState, 3),
37159f13 2714 VMSTATE_END_OF_LIST()
50641c5c 2715 },
5cd8cada
JQ		 2716 .subsections = (const VMStateDescription*[]) {
2717 &vmstate_ide_drive_pio_state,
2718 &vmstate_ide_tray_state,
2719 &vmstate_ide_atapi_gesn_state,
2720 NULL
37159f13
JQ		 2721 }
2722};
2723
656fbeff 2724static const VMStateDescription vmstate_ide_error_status = {
def93791 2725 .name ="ide_bus/error",
d12b9ff2 2726 .version_id = 2,
def93791 2727 .minimum_version_id = 1,
5cd8cada 2728 .needed = ide_error_needed,
35d08458 2729 .fields = (VMStateField[]) {
def93791 2730 VMSTATE_INT32(error_status, IDEBus),
d12b9ff2
PB		 2731 VMSTATE_INT64_V(retry_sector_num, IDEBus, 2),
2732 VMSTATE_UINT32_V(retry_nsector, IDEBus, 2),
2733 VMSTATE_UINT8_V(retry_unit, IDEBus, 2),
def93791
KW		 2734 VMSTATE_END_OF_LIST()
2735 }
2736};
2737
6521dc62
JQ		 2738const VMStateDescription vmstate_ide_bus = {
2739 .name = "ide_bus",
2740 .version_id = 1,
2741 .minimum_version_id = 1,
35d08458 2742 .fields = (VMStateField[]) {
6521dc62
JQ		 2743 VMSTATE_UINT8(cmd, IDEBus),
2744 VMSTATE_UINT8(unit, IDEBus),
2745 VMSTATE_END_OF_LIST()
def93791 2746 },
5cd8cada
JQ		 2747 .subsections = (const VMStateDescription*[]) {
2748 &vmstate_ide_error_status,
2749 NULL
6521dc62
JQ		 2750 }
2751};
75717903 2752
d8f94e1b 2753void ide_drive_get(DriveInfo **hd, int n)
75717903
IY		 2754{
2755 int i;
d8f94e1b
JS		 2756 int highest_bus = drive_get_max_bus(IF_IDE) + 1;
2757 int max_devs = drive_get_max_devs(IF_IDE);
2758 int n_buses = max_devs ? (n / max_devs) : n;
75717903 2759
d8f94e1b
JS		 2760 /*
2761 * Note: The number of actual buses available is not known.
2762 * We compute this based on the size of the DriveInfo* array, n.
2763 * If it is less than max_devs * <num_real_buses>,
2764 * We will stop looking for drives prematurely instead of overfilling
2765 * the array.
2766 */
2767
2768 if (highest_bus > n_buses) {
2769 error_report("Too many IDE buses defined (%d > %d)",
2770 highest_bus, n_buses);
75717903
IY		 2771 exit(1);
2772 }
2773
d8f94e1b
JS		 2774 for (i = 0; i < n; i++) {
2775 hd[i] = drive_get_by_index(IF_IDE, i);
75717903
IY		 2776 }
2777}
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