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updated floppy driver: formatting code, disk geometry auto detect (Jocelyn Mayer)
[qemu.git] / hw / ide.c
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5391d806
FB		 1/*
2 * QEMU IDE disk and CD-ROM Emulator
3 *
4 * Copyright (c) 2003 Fabrice Bellard
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
24#include <stdlib.h>
25#include <stdio.h>
26#include <stdarg.h>
27#include <string.h>
28#include <getopt.h>
29#include <inttypes.h>
30#include <unistd.h>
31#include <sys/mman.h>
32#include <fcntl.h>
33#include <signal.h>
34#include <time.h>
35#include <sys/time.h>
36#include <malloc.h>
37#include <termios.h>
38#include <sys/poll.h>
39#include <errno.h>
40#include <sys/wait.h>
41#include <netinet/in.h>
42
6b136f9e
FB		 43#define NO_THUNK_TYPE_SIZE
44#include "thunk.h"
45
5391d806
FB		 46#include "cpu.h"
47#include "exec-all.h"
48
49#include "vl.h"
50
5391d806
FB		 51/* debug IDE devices */
52//#define DEBUG_IDE
53//#define DEBUG_IDE_ATAPI
54
55/* Bits of HD_STATUS */
56#define ERR_STAT 0x01
57#define INDEX_STAT 0x02
58#define ECC_STAT 0x04 /* Corrected error */
59#define DRQ_STAT 0x08
60#define SEEK_STAT 0x10
61#define SRV_STAT 0x10
62#define WRERR_STAT 0x20
63#define READY_STAT 0x40
64#define BUSY_STAT 0x80
65
66/* Bits for HD_ERROR */
67#define MARK_ERR 0x01 /* Bad address mark */
68#define TRK0_ERR 0x02 /* couldn't find track 0 */
69#define ABRT_ERR 0x04 /* Command aborted */
70#define MCR_ERR 0x08 /* media change request */
71#define ID_ERR 0x10 /* ID field not found */
72#define MC_ERR 0x20 /* media changed */
73#define ECC_ERR 0x40 /* Uncorrectable ECC error */
74#define BBD_ERR 0x80 /* pre-EIDE meaning: block marked bad */
75#define ICRC_ERR 0x80 /* new meaning: CRC error during transfer */
76
77/* Bits of HD_NSECTOR */
78#define CD 0x01
79#define IO 0x02
80#define REL 0x04
81#define TAG_MASK 0xf8
82
83#define IDE_CMD_RESET 0x04
84#define IDE_CMD_DISABLE_IRQ 0x02
85
86/* ATA/ATAPI Commands pre T13 Spec */
87#define WIN_NOP 0x00
88/*
89 * 0x01->0x02 Reserved
90 */
91#define CFA_REQ_EXT_ERROR_CODE 0x03 /* CFA Request Extended Error Code */
92/*
93 * 0x04->0x07 Reserved
94 */
95#define WIN_SRST 0x08 /* ATAPI soft reset command */
96#define WIN_DEVICE_RESET 0x08
97/*
98 * 0x09->0x0F Reserved
99 */
100#define WIN_RECAL 0x10
101#define WIN_RESTORE WIN_RECAL
102/*
103 * 0x10->0x1F Reserved
104 */
105#define WIN_READ 0x20 /* 28-Bit */
106#define WIN_READ_ONCE 0x21 /* 28-Bit without retries */
107#define WIN_READ_LONG 0x22 /* 28-Bit */
108#define WIN_READ_LONG_ONCE 0x23 /* 28-Bit without retries */
109#define WIN_READ_EXT 0x24 /* 48-Bit */
110#define WIN_READDMA_EXT 0x25 /* 48-Bit */
111#define WIN_READDMA_QUEUED_EXT 0x26 /* 48-Bit */
112#define WIN_READ_NATIVE_MAX_EXT 0x27 /* 48-Bit */
113/*
114 * 0x28
115 */
116#define WIN_MULTREAD_EXT 0x29 /* 48-Bit */
117/*
118 * 0x2A->0x2F Reserved
119 */
120#define WIN_WRITE 0x30 /* 28-Bit */
121#define WIN_WRITE_ONCE 0x31 /* 28-Bit without retries */
122#define WIN_WRITE_LONG 0x32 /* 28-Bit */
123#define WIN_WRITE_LONG_ONCE 0x33 /* 28-Bit without retries */
124#define WIN_WRITE_EXT 0x34 /* 48-Bit */
125#define WIN_WRITEDMA_EXT 0x35 /* 48-Bit */
126#define WIN_WRITEDMA_QUEUED_EXT 0x36 /* 48-Bit */
127#define WIN_SET_MAX_EXT 0x37 /* 48-Bit */
128#define CFA_WRITE_SECT_WO_ERASE 0x38 /* CFA Write Sectors without erase */
129#define WIN_MULTWRITE_EXT 0x39 /* 48-Bit */
130/*
131 * 0x3A->0x3B Reserved
132 */
133#define WIN_WRITE_VERIFY 0x3C /* 28-Bit */
134/*
135 * 0x3D->0x3F Reserved
136 */
137#define WIN_VERIFY 0x40 /* 28-Bit - Read Verify Sectors */
138#define WIN_VERIFY_ONCE 0x41 /* 28-Bit - without retries */
139#define WIN_VERIFY_EXT 0x42 /* 48-Bit */
140/*
141 * 0x43->0x4F Reserved
142 */
143#define WIN_FORMAT 0x50
144/*
145 * 0x51->0x5F Reserved
146 */
147#define WIN_INIT 0x60
148/*
149 * 0x61->0x5F Reserved
150 */
151#define WIN_SEEK 0x70 /* 0x70-0x7F Reserved */
152#define CFA_TRANSLATE_SECTOR 0x87 /* CFA Translate Sector */
153#define WIN_DIAGNOSE 0x90
154#define WIN_SPECIFY 0x91 /* set drive geometry translation */
155#define WIN_DOWNLOAD_MICROCODE 0x92
156#define WIN_STANDBYNOW2 0x94
157#define WIN_STANDBY2 0x96
158#define WIN_SETIDLE2 0x97
159#define WIN_CHECKPOWERMODE2 0x98
160#define WIN_SLEEPNOW2 0x99
161/*
162 * 0x9A VENDOR
163 */
164#define WIN_PACKETCMD 0xA0 /* Send a packet command. */
165#define WIN_PIDENTIFY 0xA1 /* identify ATAPI device */
166#define WIN_QUEUED_SERVICE 0xA2
167#define WIN_SMART 0xB0 /* self-monitoring and reporting */
168#define CFA_ERASE_SECTORS 0xC0
169#define WIN_MULTREAD 0xC4 /* read sectors using multiple mode*/
170#define WIN_MULTWRITE 0xC5 /* write sectors using multiple mode */
171#define WIN_SETMULT 0xC6 /* enable/disable multiple mode */
172#define WIN_READDMA_QUEUED 0xC7 /* read sectors using Queued DMA transfers */
173#define WIN_READDMA 0xC8 /* read sectors using DMA transfers */
174#define WIN_READDMA_ONCE 0xC9 /* 28-Bit - without retries */
175#define WIN_WRITEDMA 0xCA /* write sectors using DMA transfers */
176#define WIN_WRITEDMA_ONCE 0xCB /* 28-Bit - without retries */
177#define WIN_WRITEDMA_QUEUED 0xCC /* write sectors using Queued DMA transfers */
178#define CFA_WRITE_MULTI_WO_ERASE 0xCD /* CFA Write multiple without erase */
179#define WIN_GETMEDIASTATUS 0xDA
180#define WIN_ACKMEDIACHANGE 0xDB /* ATA-1, ATA-2 vendor */
181#define WIN_POSTBOOT 0xDC
182#define WIN_PREBOOT 0xDD
183#define WIN_DOORLOCK 0xDE /* lock door on removable drives */
184#define WIN_DOORUNLOCK 0xDF /* unlock door on removable drives */
185#define WIN_STANDBYNOW1 0xE0
186#define WIN_IDLEIMMEDIATE 0xE1 /* force drive to become "ready" */
187#define WIN_STANDBY 0xE2 /* Set device in Standby Mode */
188#define WIN_SETIDLE1 0xE3
189#define WIN_READ_BUFFER 0xE4 /* force read only 1 sector */
190#define WIN_CHECKPOWERMODE1 0xE5
191#define WIN_SLEEPNOW1 0xE6
192#define WIN_FLUSH_CACHE 0xE7
193#define WIN_WRITE_BUFFER 0xE8 /* force write only 1 sector */
194#define WIN_WRITE_SAME 0xE9 /* read ata-2 to use */
195 /* SET_FEATURES 0x22 or 0xDD */
196#define WIN_FLUSH_CACHE_EXT 0xEA /* 48-Bit */
197#define WIN_IDENTIFY 0xEC /* ask drive to identify itself */
198#define WIN_MEDIAEJECT 0xED
199#define WIN_IDENTIFY_DMA 0xEE /* same as WIN_IDENTIFY, but DMA */
200#define WIN_SETFEATURES 0xEF /* set special drive features */
201#define EXABYTE_ENABLE_NEST 0xF0
202#define WIN_SECURITY_SET_PASS 0xF1
203#define WIN_SECURITY_UNLOCK 0xF2
204#define WIN_SECURITY_ERASE_PREPARE 0xF3
205#define WIN_SECURITY_ERASE_UNIT 0xF4
206#define WIN_SECURITY_FREEZE_LOCK 0xF5
207#define WIN_SECURITY_DISABLE 0xF6
208#define WIN_READ_NATIVE_MAX 0xF8 /* return the native maximum address */
209#define WIN_SET_MAX 0xF9
210#define DISABLE_SEAGATE 0xFB
211
212/* set to 1 set disable mult support */
213#define MAX_MULT_SECTORS 8
214
215/* ATAPI defines */
216
217#define ATAPI_PACKET_SIZE 12
218
219/* The generic packet command opcodes for CD/DVD Logical Units,
220 * From Table 57 of the SFF8090 Ver. 3 (Mt. Fuji) draft standard. */
221#define GPCMD_BLANK 0xa1
222#define GPCMD_CLOSE_TRACK 0x5b
223#define GPCMD_FLUSH_CACHE 0x35
224#define GPCMD_FORMAT_UNIT 0x04
225#define GPCMD_GET_CONFIGURATION 0x46
226#define GPCMD_GET_EVENT_STATUS_NOTIFICATION 0x4a
227#define GPCMD_GET_PERFORMANCE 0xac
228#define GPCMD_INQUIRY 0x12
229#define GPCMD_LOAD_UNLOAD 0xa6
230#define GPCMD_MECHANISM_STATUS 0xbd
231#define GPCMD_MODE_SELECT_10 0x55
232#define GPCMD_MODE_SENSE_10 0x5a
233#define GPCMD_PAUSE_RESUME 0x4b
234#define GPCMD_PLAY_AUDIO_10 0x45
235#define GPCMD_PLAY_AUDIO_MSF 0x47
236#define GPCMD_PLAY_AUDIO_TI 0x48
237#define GPCMD_PLAY_CD 0xbc
238#define GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL 0x1e
239#define GPCMD_READ_10 0x28
240#define GPCMD_READ_12 0xa8
241#define GPCMD_READ_CDVD_CAPACITY 0x25
242#define GPCMD_READ_CD 0xbe
243#define GPCMD_READ_CD_MSF 0xb9
244#define GPCMD_READ_DISC_INFO 0x51
245#define GPCMD_READ_DVD_STRUCTURE 0xad
246#define GPCMD_READ_FORMAT_CAPACITIES 0x23
247#define GPCMD_READ_HEADER 0x44
248#define GPCMD_READ_TRACK_RZONE_INFO 0x52
249#define GPCMD_READ_SUBCHANNEL 0x42
250#define GPCMD_READ_TOC_PMA_ATIP 0x43
251#define GPCMD_REPAIR_RZONE_TRACK 0x58
252#define GPCMD_REPORT_KEY 0xa4
253#define GPCMD_REQUEST_SENSE 0x03
254#define GPCMD_RESERVE_RZONE_TRACK 0x53
255#define GPCMD_SCAN 0xba
256#define GPCMD_SEEK 0x2b
257#define GPCMD_SEND_DVD_STRUCTURE 0xad
258#define GPCMD_SEND_EVENT 0xa2
259#define GPCMD_SEND_KEY 0xa3
260#define GPCMD_SEND_OPC 0x54
261#define GPCMD_SET_READ_AHEAD 0xa7
262#define GPCMD_SET_STREAMING 0xb6
263#define GPCMD_START_STOP_UNIT 0x1b
264#define GPCMD_STOP_PLAY_SCAN 0x4e
265#define GPCMD_TEST_UNIT_READY 0x00
266#define GPCMD_VERIFY_10 0x2f
267#define GPCMD_WRITE_10 0x2a
268#define GPCMD_WRITE_AND_VERIFY_10 0x2e
269/* This is listed as optional in ATAPI 2.6, but is (curiously)
270 * missing from Mt. Fuji, Table 57. It _is_ mentioned in Mt. Fuji
271 * Table 377 as an MMC command for SCSi devices though... Most ATAPI
272 * drives support it. */
273#define GPCMD_SET_SPEED 0xbb
274/* This seems to be a SCSI specific CD-ROM opcode
275 * to play data at track/index */
276#define GPCMD_PLAYAUDIO_TI 0x48
277/*
278 * From MS Media Status Notification Support Specification. For
279 * older drives only.
280 */
281#define GPCMD_GET_MEDIA_STATUS 0xda
282
283/* Mode page codes for mode sense/set */
284#define GPMODE_R_W_ERROR_PAGE 0x01
285#define GPMODE_WRITE_PARMS_PAGE 0x05
286#define GPMODE_AUDIO_CTL_PAGE 0x0e
287#define GPMODE_POWER_PAGE 0x1a
288#define GPMODE_FAULT_FAIL_PAGE 0x1c
289#define GPMODE_TO_PROTECT_PAGE 0x1d
290#define GPMODE_CAPABILITIES_PAGE 0x2a
291#define GPMODE_ALL_PAGES 0x3f
292/* Not in Mt. Fuji, but in ATAPI 2.6 -- depricated now in favor
293 * of MODE_SENSE_POWER_PAGE */
294#define GPMODE_CDROM_PAGE 0x0d
295
296#define ATAPI_INT_REASON_CD 0x01 /* 0 = data transfer */
297#define ATAPI_INT_REASON_IO 0x02 /* 1 = transfer to the host */
298#define ATAPI_INT_REASON_REL 0x04
299#define ATAPI_INT_REASON_TAG 0xf8
300
301/* same constants as bochs */
7f777bf3 302#define ASC_ILLEGAL_OPCODE 0x20
5391d806
FB		 303#define ASC_LOGICAL_BLOCK_OOR 0x21
304#define ASC_INV_FIELD_IN_CMD_PACKET 0x24
305#define ASC_MEDIUM_NOT_PRESENT 0x3a
306#define ASC_SAVING_PARAMETERS_NOT_SUPPORTED 0x39
307
308#define SENSE_NONE 0
309#define SENSE_NOT_READY 2
310#define SENSE_ILLEGAL_REQUEST 5
311#define SENSE_UNIT_ATTENTION 6
312
313struct IDEState;
314
315typedef void EndTransferFunc(struct IDEState *);
316
caed8802 317/* NOTE: IDEState represents in fact one drive */
5391d806
FB		 318typedef struct IDEState {
319 /* ide config */
320 int is_cdrom;
5391d806
FB		 321 int cylinders, heads, sectors;
322 int64_t nb_sectors;
323 int mult_sectors;
324 int irq;
325 /* ide regs */
326 uint8_t feature;
327 uint8_t error;
328 uint16_t nsector; /* 0 is 256 to ease computations */
329 uint8_t sector;
330 uint8_t lcyl;
331 uint8_t hcyl;
332 uint8_t select;
333 uint8_t status;
334 /* 0x3f6 command, only meaningful for drive 0 */
335 uint8_t cmd;
336 /* depends on bit 4 in select, only meaningful for drive 0 */
337 struct IDEState *cur_drive;
338 BlockDriverState *bs;
339 /* ATAPI specific */
340 uint8_t sense_key;
341 uint8_t asc;
342 int packet_transfer_size;
343 int elementary_transfer_size;
344 int io_buffer_index;
345 int lba;
346 /* transfer handling */
347 int req_nb_sectors; /* number of sectors per interrupt */
348 EndTransferFunc *end_transfer_func;
349 uint8_t *data_ptr;
350 uint8_t *data_end;
351 uint8_t io_buffer[MAX_MULT_SECTORS*512 + 4];
352} IDEState;
353
5391d806
FB		 354static void padstr(char *str, const char *src, int len)
355{
356 int i, v;
357 for(i = 0; i < len; i++) {
358 if (*src)
359 v = *src++;
360 else
361 v = ' ';
362 *(char *)((long)str ^ 1) = v;
363 str++;
364 }
365}
366
bd0d90b2
FB		 367static void padstr8(uint8_t *buf, int buf_size, const char *src)
368{
369 int i;
370 for(i = 0; i < buf_size; i++) {
371 if (*src)
372 buf[i] = *src++;
373 else
374 buf[i] = ' ';
375 }
376}
377
5391d806
FB		 378static void ide_identify(IDEState *s)
379{
380 uint16_t *p;
381 unsigned int oldsize;
382
383 memset(s->io_buffer, 0, 512);
384 p = (uint16_t *)s->io_buffer;
385 stw_raw(p + 0, 0x0040);
386 stw_raw(p + 1, s->cylinders);
387 stw_raw(p + 3, s->heads);
3ad9a57e
FB		 388 stw_raw(p + 4, 512 * s->sectors); /* XXX: retired, remove ? */
389 stw_raw(p + 5, 512); /* XXX: retired, remove ? */
5391d806
FB		 390 stw_raw(p + 6, s->sectors);
391 padstr((uint8_t *)(p + 10), "QM00001", 20); /* serial number */
3ad9a57e 392 stw_raw(p + 20, 3); /* XXX: retired, remove ? */
5391d806
FB		 393 stw_raw(p + 21, 512); /* cache size in sectors */
394 stw_raw(p + 22, 4); /* ecc bytes */
395 padstr((uint8_t *)(p + 23), QEMU_VERSION, 8); /* firmware version */
396 padstr((uint8_t *)(p + 27), "QEMU HARDDISK", 40); /* model */
397#if MAX_MULT_SECTORS > 1
3ad9a57e 398 stw_raw(p + 47, 0x8000 | MAX_MULT_SECTORS);
5391d806
FB		 399#endif
400 stw_raw(p + 48, 1); /* dword I/O */
401 stw_raw(p + 49, 1 << 9); /* LBA supported, no DMA */
402 stw_raw(p + 51, 0x200); /* PIO transfer cycle */
403 stw_raw(p + 52, 0x200); /* DMA transfer cycle */
3ad9a57e 404 stw_raw(p + 53, 1); /* words 54-58 are valid */
5391d806
FB		 405 stw_raw(p + 54, s->cylinders);
406 stw_raw(p + 55, s->heads);
407 stw_raw(p + 56, s->sectors);
408 oldsize = s->cylinders * s->heads * s->sectors;
409 stw_raw(p + 57, oldsize);
410 stw_raw(p + 58, oldsize >> 16);
411 if (s->mult_sectors)
412 stw_raw(p + 59, 0x100 | s->mult_sectors);
413 stw_raw(p + 60, s->nb_sectors);
414 stw_raw(p + 61, s->nb_sectors >> 16);
415 stw_raw(p + 80, (1 << 1) | (1 << 2));
416 stw_raw(p + 82, (1 << 14));
417 stw_raw(p + 83, (1 << 14));
418 stw_raw(p + 84, (1 << 14));
419 stw_raw(p + 85, (1 << 14));
420 stw_raw(p + 86, 0);
421 stw_raw(p + 87, (1 << 14));
422}
423
424static void ide_atapi_identify(IDEState *s)
425{
426 uint16_t *p;
427
428 memset(s->io_buffer, 0, 512);
429 p = (uint16_t *)s->io_buffer;
430 /* Removable CDROM, 50us response, 12 byte packets */
431 stw_raw(p + 0, (2 << 14) | (5 << 8) | (1 << 7) | (2 << 5) | (0 << 0));
432 stw_raw(p + 1, s->cylinders);
433 stw_raw(p + 3, s->heads);
434 stw_raw(p + 4, 512 * s->sectors); /* sectors */
435 stw_raw(p + 5, 512); /* sector size */
436 stw_raw(p + 6, s->sectors);
437 padstr((uint8_t *)(p + 10), "QM00001", 20); /* serial number */
438 stw_raw(p + 20, 3); /* buffer type */
439 stw_raw(p + 21, 512); /* cache size in sectors */
440 stw_raw(p + 22, 4); /* ecc bytes */
441 padstr((uint8_t *)(p + 23), QEMU_VERSION, 8); /* firmware version */
442 padstr((uint8_t *)(p + 27), "QEMU CD-ROM", 40); /* model */
443 stw_raw(p + 48, 1); /* dword I/O (XXX: should not be set on CDROM) */
444 stw_raw(p + 49, 1 << 9); /* LBA supported, no DMA */
445 stw_raw(p + 53, 3); /* words 64-70, 54-58 valid */
446 stw_raw(p + 63, 0x103); /* DMA modes XXX: may be incorrect */
447 stw_raw(p + 64, 1); /* PIO modes */
448 stw_raw(p + 65, 0xb4); /* minimum DMA multiword tx cycle time */
449 stw_raw(p + 66, 0xb4); /* recommended DMA multiword tx cycle time */
450 stw_raw(p + 67, 0x12c); /* minimum PIO cycle time without flow control */
451 stw_raw(p + 68, 0xb4); /* minimum PIO cycle time with IORDY flow control */
452
453 stw_raw(p + 71, 30); /* in ns */
454 stw_raw(p + 72, 30); /* in ns */
455
456 stw_raw(p + 80, 0x1e); /* support up to ATA/ATAPI-4 */
457}
458
459static void ide_set_signature(IDEState *s)
460{
461 s->select &= 0xf0; /* clear head */
462 /* put signature */
463 s->nsector = 1;
464 s->sector = 1;
465 if (s->is_cdrom) {
466 s->lcyl = 0x14;
467 s->hcyl = 0xeb;
468 } else if (s->bs) {
469 s->lcyl = 0;
470 s->hcyl = 0;
471 } else {
472 s->lcyl = 0xff;
473 s->hcyl = 0xff;
474 }
475}
476
477static inline void ide_abort_command(IDEState *s)
478{
479 s->status = READY_STAT | ERR_STAT;
480 s->error = ABRT_ERR;
481}
482
483static inline void ide_set_irq(IDEState *s)
484{
485 if (!(s->cmd & IDE_CMD_DISABLE_IRQ)) {
486 pic_set_irq(s->irq, 1);
487 }
488}
489
490/* prepare data transfer and tell what to do after */
491static void ide_transfer_start(IDEState *s, uint8_t *buf, int size,
492 EndTransferFunc *end_transfer_func)
493{
494 s->end_transfer_func = end_transfer_func;
495 s->data_ptr = buf;
496 s->data_end = buf + size;
497 s->status |= DRQ_STAT;
498}
499
500static void ide_transfer_stop(IDEState *s)
501{
502 s->end_transfer_func = ide_transfer_stop;
503 s->data_ptr = s->io_buffer;
504 s->data_end = s->io_buffer;
505 s->status &= ~DRQ_STAT;
506}
507
508static int64_t ide_get_sector(IDEState *s)
509{
510 int64_t sector_num;
511 if (s->select & 0x40) {
512 /* lba */
513 sector_num = ((s->select & 0x0f) << 24) | (s->hcyl << 16) |
514 (s->lcyl << 8) | s->sector;
515 } else {
516 sector_num = ((s->hcyl << 8) | s->lcyl) * s->heads * s->sectors +
517 (s->select & 0x0f) * s->sectors +
518 (s->sector - 1);
519 }
520 return sector_num;
521}
522
523static void ide_set_sector(IDEState *s, int64_t sector_num)
524{
525 unsigned int cyl, r;
526 if (s->select & 0x40) {
527 s->select = (s->select & 0xf0) | (sector_num >> 24);
528 s->hcyl = (sector_num >> 16);
529 s->lcyl = (sector_num >> 8);
530 s->sector = (sector_num);
531 } else {
532 cyl = sector_num / (s->heads * s->sectors);
533 r = sector_num % (s->heads * s->sectors);
534 s->hcyl = cyl >> 8;
535 s->lcyl = cyl;
536 s->select = (s->select & 0xf0) | (r / s->sectors);
537 s->sector = (r % s->sectors) + 1;
538 }
539}
540
541static void ide_sector_read(IDEState *s)
542{
543 int64_t sector_num;
544 int ret, n;
545
546 s->status = READY_STAT | SEEK_STAT;
a136e5a8 547 s->error = 0; /* not needed by IDE spec, but needed by Windows */
5391d806
FB		 548 sector_num = ide_get_sector(s);
549 n = s->nsector;
550 if (n == 0) {
551 /* no more sector to read from disk */
552 ide_transfer_stop(s);
553 } else {
554#if defined(DEBUG_IDE)
555 printf("read sector=%Ld\n", sector_num);
556#endif
557 if (n > s->req_nb_sectors)
558 n = s->req_nb_sectors;
559 ret = bdrv_read(s->bs, sector_num, s->io_buffer, n);
560 ide_transfer_start(s, s->io_buffer, 512 * n, ide_sector_read);
561 ide_set_irq(s);
562 ide_set_sector(s, sector_num + n);
563 s->nsector -= n;
564 }
565}
566
567static void ide_sector_write(IDEState *s)
568{
569 int64_t sector_num;
570 int ret, n, n1;
571
572 s->status = READY_STAT | SEEK_STAT;
573 sector_num = ide_get_sector(s);
574#if defined(DEBUG_IDE)
575 printf("write sector=%Ld\n", sector_num);
576#endif
577 n = s->nsector;
578 if (n > s->req_nb_sectors)
579 n = s->req_nb_sectors;
580 ret = bdrv_write(s->bs, sector_num, s->io_buffer, n);
581 s->nsector -= n;
582 if (s->nsector == 0) {
583 /* no more sector to write */
584 ide_transfer_stop(s);
585 } else {
586 n1 = s->nsector;
587 if (n1 > s->req_nb_sectors)
588 n1 = s->req_nb_sectors;
589 ide_transfer_start(s, s->io_buffer, 512 * n1, ide_sector_write);
590 }
591 ide_set_sector(s, sector_num + n);
592 ide_set_irq(s);
593}
594
595static void ide_atapi_cmd_ok(IDEState *s)
596{
597 s->error = 0;
598 s->status = READY_STAT;
599 s->nsector = (s->nsector & ~7) | ATAPI_INT_REASON_IO | ATAPI_INT_REASON_CD;
600 ide_set_irq(s);
601}
602
603static void ide_atapi_cmd_error(IDEState *s, int sense_key, int asc)
604{
605#ifdef DEBUG_IDE_ATAPI
606 printf("atapi_cmd_error: sense=0x%x asc=0x%x\n", sense_key, asc);
607#endif
608 s->error = sense_key << 4;
609 s->status = READY_STAT | ERR_STAT;
610 s->nsector = (s->nsector & ~7) | ATAPI_INT_REASON_IO | ATAPI_INT_REASON_CD;
611 s->sense_key = sense_key;
612 s->asc = asc;
613 ide_set_irq(s);
614}
615
616static inline void cpu_to_ube16(uint8_t *buf, int val)
617{
618 buf[0] = val >> 8;
619 buf[1] = val;
620}
621
622static inline void cpu_to_ube32(uint8_t *buf, unsigned int val)
623{
624 buf[0] = val >> 24;
625 buf[1] = val >> 16;
626 buf[2] = val >> 8;
627 buf[3] = val;
628}
629
630static inline int ube16_to_cpu(const uint8_t *buf)
631{
632 return (buf[0] << 8) | buf[1];
633}
634
635static inline int ube32_to_cpu(const uint8_t *buf)
636{
637 return (buf[0] << 24) | (buf[1] << 16) | (buf[2] << 8) | buf[3];
638}
639
640/* The whole ATAPI transfer logic is handled in this function */
641static void ide_atapi_cmd_reply_end(IDEState *s)
642{
643 int byte_count_limit, size;
644#ifdef DEBUG_IDE_ATAPI
645 printf("reply: tx_size=%d elem_tx_size=%d index=%d\n",
646 s->packet_transfer_size,
647 s->elementary_transfer_size,
648 s->io_buffer_index);
649#endif
650 if (s->packet_transfer_size <= 0) {
651 /* end of transfer */
652 ide_transfer_stop(s);
653 s->status = READY_STAT;
654 s->nsector = (s->nsector & ~7) | ATAPI_INT_REASON_IO | ATAPI_INT_REASON_CD;
655 ide_set_irq(s);
656#ifdef DEBUG_IDE_ATAPI
657 printf("status=0x%x\n", s->status);
658#endif
659 } else {
660 /* see if a new sector must be read */
661 if (s->lba != -1 && s->io_buffer_index >= 2048) {
662 bdrv_read(s->bs, (int64_t)s->lba << 2, s->io_buffer, 4);
663 s->lba++;
664 s->io_buffer_index = 0;
665 }
666 if (s->elementary_transfer_size > 0) {
667 /* there are some data left to transmit in this elementary
668 transfer */
669 size = 2048 - s->io_buffer_index;
670 if (size > s->elementary_transfer_size)
671 size = s->elementary_transfer_size;
672 ide_transfer_start(s, s->io_buffer + s->io_buffer_index,
673 size, ide_atapi_cmd_reply_end);
674 s->packet_transfer_size -= size;
675 s->elementary_transfer_size -= size;
676 s->io_buffer_index += size;
677 } else {
678 /* a new transfer is needed */
679 s->nsector = (s->nsector & ~7) | ATAPI_INT_REASON_IO;
680 byte_count_limit = s->lcyl | (s->hcyl << 8);
681#ifdef DEBUG_IDE_ATAPI
682 printf("byte_count_limit=%d\n", byte_count_limit);
683#endif
684 if (byte_count_limit == 0xffff)
685 byte_count_limit--;
686 size = s->packet_transfer_size;
687 if (size > byte_count_limit) {
688 /* byte count limit must be even if this case */
689 if (byte_count_limit & 1)
690 byte_count_limit--;
691 size = byte_count_limit;
5391d806 692 }
a136e5a8
FB		 693 s->lcyl = size;
694 s->hcyl = size >> 8;
5391d806
FB		 695 s->elementary_transfer_size = size;
696 /* we cannot transmit more than one sector at a time */
697 if (s->lba != -1) {
698 if (size > (2048 - s->io_buffer_index))
699 size = (2048 - s->io_buffer_index);
700 }
701 ide_transfer_start(s, s->io_buffer + s->io_buffer_index,
702 size, ide_atapi_cmd_reply_end);
703 s->packet_transfer_size -= size;
704 s->elementary_transfer_size -= size;
705 s->io_buffer_index += size;
706 ide_set_irq(s);
707#ifdef DEBUG_IDE_ATAPI
708 printf("status=0x%x\n", s->status);
709#endif
710 }
711 }
712}
713
714/* send a reply of 'size' bytes in s->io_buffer to an ATAPI command */
715static void ide_atapi_cmd_reply(IDEState *s, int size, int max_size)
716{
717 if (size > max_size)
718 size = max_size;
719 s->lba = -1; /* no sector read */
720 s->packet_transfer_size = size;
721 s->elementary_transfer_size = 0;
722 s->io_buffer_index = 0;
723
724 s->status = READY_STAT;
725 ide_atapi_cmd_reply_end(s);
726}
727
728/* start a CD-CDROM read command */
729static void ide_atapi_cmd_read(IDEState *s, int lba, int nb_sectors)
730{
731#ifdef DEBUG_IDE_ATAPI
732 printf("read: LBA=%d nb_sectors=%d\n", lba, nb_sectors);
733#endif
734 s->lba = lba;
735 s->packet_transfer_size = nb_sectors * 2048;
736 s->elementary_transfer_size = 0;
737 s->io_buffer_index = 2048;
738
739 s->status = READY_STAT;
740 ide_atapi_cmd_reply_end(s);
741}
742
743/* same toc as bochs. Return -1 if error or the toc length */
744static int cdrom_read_toc(IDEState *s, uint8_t *buf, int msf, int start_track)
745{
746 uint8_t *q;
747 int nb_sectors, len;
748
749 if (start_track > 1 && start_track != 0xaa)
750 return -1;
751 q = buf + 2;
752 *q++ = 1;
753 *q++ = 1;
754 if (start_track <= 1) {
755 *q++ = 0; /* reserved */
756 *q++ = 0x14; /* ADR, control */
757 *q++ = 1; /* track number */
758 *q++ = 0; /* reserved */
759 if (msf) {
760 *q++ = 0; /* reserved */
761 *q++ = 0; /* minute */
762 *q++ = 2; /* second */
763 *q++ = 0; /* frame */
764 } else {
765 /* sector 0 */
766 cpu_to_ube32(q, 0);
767 q += 4;
768 }
769 }
770 /* lead out track */
771 *q++ = 0; /* reserved */
772 *q++ = 0x16; /* ADR, control */
773 *q++ = 0xaa; /* track number */
774 *q++ = 0; /* reserved */
775 nb_sectors = s->nb_sectors >> 2;
776 if (msf) {
777 *q++ = 0; /* reserved */
778 *q++ = ((nb_sectors + 150) / 75) / 60;
779 *q++ = ((nb_sectors + 150) / 75) % 60;
780 *q++ = (nb_sectors + 150) % 75;
781 } else {
782 cpu_to_ube32(q, nb_sectors);
783 q += 4;
784 }
785 len = q - buf;
786 cpu_to_ube16(buf, len - 2);
787 return len;
788}
789
790static void ide_atapi_cmd(IDEState *s)
791{
792 const uint8_t *packet;
793 uint8_t *buf;
794 int max_len;
795
796 packet = s->io_buffer;
797 buf = s->io_buffer;
798#ifdef DEBUG_IDE_ATAPI
799 {
800 int i;
801 printf("ATAPI limit=0x%x packet:", s->lcyl | (s->hcyl << 8));
802 for(i = 0; i < ATAPI_PACKET_SIZE; i++) {
803 printf(" %02x", packet[i]);
804 }
805 printf("\n");
806 }
807#endif
808 switch(s->io_buffer[0]) {
809 case GPCMD_TEST_UNIT_READY:
caed8802 810 if (bdrv_is_inserted(s->bs)) {
5391d806
FB		 811 ide_atapi_cmd_ok(s);
812 } else {
813 ide_atapi_cmd_error(s, SENSE_NOT_READY,
814 ASC_MEDIUM_NOT_PRESENT);
815 }
816 break;
817 case GPCMD_MODE_SENSE_10:
818 {
819 int action, code;
820 max_len = ube16_to_cpu(packet + 7);
821 action = packet[2] >> 6;
822 code = packet[2] & 0x3f;
823 switch(action) {
824 case 0: /* current values */
825 switch(code) {
826 case 0x01: /* error recovery */
827 cpu_to_ube16(&buf[0], 16 + 6);
828 buf[2] = 0x70;
829 buf[3] = 0;
830 buf[4] = 0;
831 buf[5] = 0;
832 buf[6] = 0;
833 buf[7] = 0;
834
835 buf[8] = 0x01;
836 buf[9] = 0x06;
837 buf[10] = 0x00;
838 buf[11] = 0x05;
839 buf[12] = 0x00;
840 buf[13] = 0x00;
841 buf[14] = 0x00;
842 buf[15] = 0x00;
843 ide_atapi_cmd_reply(s, 16, max_len);
844 break;
845 case 0x2a:
846 cpu_to_ube16(&buf[0], 28 + 6);
847 buf[2] = 0x70;
848 buf[3] = 0;
849 buf[4] = 0;
850 buf[5] = 0;
851 buf[6] = 0;
852 buf[7] = 0;
853
854 buf[8] = 0x2a;
855 buf[9] = 0x12;
856 buf[10] = 0x00;
857 buf[11] = 0x00;
858
859 buf[12] = 0x70;
860 buf[13] = 3 << 5;
861 buf[14] = (1 << 0) | (1 << 3) | (1 << 5);
caed8802 862 if (bdrv_is_locked(s->bs))
5391d806
FB		 863 buf[6] |= 1 << 1;
864 buf[15] = 0x00;
865 cpu_to_ube16(&buf[16], 706);
866 buf[18] = 0;
867 buf[19] = 2;
868 cpu_to_ube16(&buf[20], 512);
869 cpu_to_ube16(&buf[22], 706);
870 buf[24] = 0;
871 buf[25] = 0;
872 buf[26] = 0;
873 buf[27] = 0;
874 ide_atapi_cmd_reply(s, 28, max_len);
875 break;
876 default:
877 goto error_cmd;
878 }
879 break;
880 case 1: /* changeable values */
881 goto error_cmd;
882 case 2: /* default values */
883 goto error_cmd;
884 default:
885 case 3: /* saved values */
886 ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST,
887 ASC_SAVING_PARAMETERS_NOT_SUPPORTED);
888 break;
889 }
890 }
891 break;
892 case GPCMD_REQUEST_SENSE:
893 max_len = packet[4];
894 memset(buf, 0, 18);
895 buf[0] = 0x70 | (1 << 7);
896 buf[2] = s->sense_key;
897 buf[7] = 10;
898 buf[12] = s->asc;
899 ide_atapi_cmd_reply(s, 18, max_len);
900 break;
901 case GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL:
caed8802
FB		 902 if (bdrv_is_inserted(s->bs)) {
903 bdrv_set_locked(s->bs, packet[4] & 1);
5391d806
FB		 904 ide_atapi_cmd_ok(s);
905 } else {
906 ide_atapi_cmd_error(s, SENSE_NOT_READY,
907 ASC_MEDIUM_NOT_PRESENT);
908 }
909 break;
910 case GPCMD_READ_10:
911 case GPCMD_READ_12:
912 {
913 int nb_sectors, lba;
914
caed8802 915 if (!bdrv_is_inserted(s->bs)) {
5391d806
FB		 916 ide_atapi_cmd_error(s, SENSE_NOT_READY,
917 ASC_MEDIUM_NOT_PRESENT);
918 break;
919 }
920 if (packet[0] == GPCMD_READ_10)
921 nb_sectors = ube16_to_cpu(packet + 7);
922 else
923 nb_sectors = ube32_to_cpu(packet + 6);
924 lba = ube32_to_cpu(packet + 2);
925 if (nb_sectors == 0) {
926 ide_atapi_cmd_ok(s);
927 break;
928 }
929 if (((int64_t)(lba + nb_sectors) << 2) > s->nb_sectors) {
930 ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST,
931 ASC_LOGICAL_BLOCK_OOR);
932 break;
933 }
934 ide_atapi_cmd_read(s, lba, nb_sectors);
935 }
936 break;
937 case GPCMD_SEEK:
938 {
939 int lba;
caed8802 940 if (!bdrv_is_inserted(s->bs)) {
5391d806
FB		 941 ide_atapi_cmd_error(s, SENSE_NOT_READY,
942 ASC_MEDIUM_NOT_PRESENT);
943 break;
944 }
945 lba = ube32_to_cpu(packet + 2);
946 if (((int64_t)lba << 2) > s->nb_sectors) {
947 ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST,
948 ASC_LOGICAL_BLOCK_OOR);
949 break;
950 }
951 ide_atapi_cmd_ok(s);
952 }
953 break;
954 case GPCMD_START_STOP_UNIT:
955 {
956 int start, eject;
957 start = packet[4] & 1;
958 eject = (packet[4] >> 1) & 1;
959
caed8802
FB		 960 if (eject && !start) {
961 /* eject the disk */
962 bdrv_close(s->bs);
963 }
5391d806
FB		 964 ide_atapi_cmd_ok(s);
965 }
966 break;
967 case GPCMD_MECHANISM_STATUS:
968 {
969 max_len = ube16_to_cpu(packet + 8);
970 cpu_to_ube16(buf, 0);
971 /* no current LBA */
972 buf[2] = 0;
973 buf[3] = 0;
974 buf[4] = 0;
975 buf[5] = 1;
976 cpu_to_ube16(buf + 6, 0);
977 ide_atapi_cmd_reply(s, 8, max_len);
978 }
979 break;
980 case GPCMD_READ_TOC_PMA_ATIP:
981 {
982 int format, msf, start_track, len;
983
caed8802 984 if (!bdrv_is_inserted(s->bs)) {
5391d806
FB		 985 ide_atapi_cmd_error(s, SENSE_NOT_READY,
986 ASC_MEDIUM_NOT_PRESENT);
987 break;
988 }
989 max_len = ube16_to_cpu(packet + 7);
990 format = packet[9] >> 6;
991 msf = (packet[1] >> 1) & 1;
992 start_track = packet[6];
993 switch(format) {
994 case 0:
995 len = cdrom_read_toc(s, buf, msf, start_track);
996 if (len < 0)
997 goto error_cmd;
998 ide_atapi_cmd_reply(s, len, max_len);
999 break;
1000 case 1:
1001 /* multi session : only a single session defined */
1002 memset(buf, 0, 12);
1003 buf[1] = 0x0a;
1004 buf[2] = 0x01;
1005 buf[3] = 0x01;
1006 ide_atapi_cmd_reply(s, 12, max_len);
1007 break;
1008 default:
7f777bf3
FB		 1009 error_cmd:
1010 ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST,
1011 ASC_INV_FIELD_IN_CMD_PACKET);
1012 break;
5391d806
FB		 1013 }
1014 }
1015 break;
1016 case GPCMD_READ_CDVD_CAPACITY:
caed8802 1017 if (!bdrv_is_inserted(s->bs)) {
5391d806
FB		 1018 ide_atapi_cmd_error(s, SENSE_NOT_READY,
1019 ASC_MEDIUM_NOT_PRESENT);
1020 break;
1021 }
1022 /* NOTE: it is really the number of sectors minus 1 */
1023 cpu_to_ube32(buf, (s->nb_sectors >> 2) - 1);
1024 cpu_to_ube32(buf + 4, 2048);
1025 ide_atapi_cmd_reply(s, 8, 8);
1026 break;
bd0d90b2
FB		 1027 case GPCMD_INQUIRY:
1028 max_len = packet[4];
1029 buf[0] = 0x05; /* CD-ROM */
1030 buf[1] = 0x80; /* removable */
1031 buf[2] = 0x00; /* ISO */
1032 buf[3] = 0x21; /* ATAPI-2 (XXX: put ATAPI-4 ?) */
1033 buf[4] = 31; /* additionnal length */
1034 buf[5] = 0; /* reserved */
1035 buf[6] = 0; /* reserved */
1036 buf[7] = 0; /* reserved */
1037 padstr8(buf + 8, 8, "QEMU");
1038 padstr8(buf + 16, 16, "QEMU CD-ROM");
1039 padstr8(buf + 32, 4, QEMU_VERSION);
1040 ide_atapi_cmd_reply(s, 36, max_len);
1041 break;
5391d806 1042 default:
5391d806 1043 ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST,
7f777bf3 1044 ASC_ILLEGAL_OPCODE);
5391d806
FB		 1045 break;
1046 }
1047}
1048
caed8802
FB		 1049/* called when the inserted state of the media has changed */
1050static void cdrom_change_cb(void *opaque)
5391d806 1051{
caed8802
FB		 1052 IDEState *s = opaque;
1053 int64_t nb_sectors;
1054
1055 /* XXX: send interrupt too */
1056 bdrv_get_geometry(s->bs, &nb_sectors);
1057 s->nb_sectors = nb_sectors;
1058}
1059
1060static void ide_ioport_write(void *opaque, uint32_t addr, uint32_t val)
1061{
1062 IDEState *ide_if = opaque;
5391d806
FB		 1063 IDEState *s = ide_if->cur_drive;
1064 int unit, n;
1065
1066#ifdef DEBUG_IDE
1067 printf("IDE: write addr=0x%x val=0x%02x\n", addr, val);
1068#endif
1069 addr &= 7;
1070 switch(addr) {
1071 case 0:
1072 break;
1073 case 1:
1074 s->feature = val;
1075 break;
1076 case 2:
1077 if (val == 0)
1078 val = 256;
1079 s->nsector = val;
1080 break;
1081 case 3:
1082 s->sector = val;
1083 break;
1084 case 4:
1085 s->lcyl = val;
1086 break;
1087 case 5:
1088 s->hcyl = val;
1089 break;
1090 case 6:
1091 /* select drive */
1092 unit = (val >> 4) & 1;
1093 s = ide_if + unit;
1094 ide_if->cur_drive = s;
1095 s->select = val;
1096 break;
1097 default:
1098 case 7:
1099 /* command */
1100#if defined(DEBUG_IDE)
1101 printf("ide: CMD=%02x\n", val);
1102#endif
1103 switch(val) {
1104 case WIN_IDENTIFY:
1105 if (s->bs && !s->is_cdrom) {
1106 ide_identify(s);
1107 s->status = READY_STAT;
1108 ide_transfer_start(s, s->io_buffer, 512, ide_transfer_stop);
1109 } else {
1110 if (s->is_cdrom) {
1111 ide_set_signature(s);
1112 }
1113 ide_abort_command(s);
1114 }
1115 ide_set_irq(s);
1116 break;
1117 case WIN_SPECIFY:
1118 case WIN_RECAL:
a136e5a8 1119 s->error = 0;
5391d806
FB		 1120 s->status = READY_STAT;
1121 ide_set_irq(s);
1122 break;
1123 case WIN_SETMULT:
1124 if (s->nsector > MAX_MULT_SECTORS ||
1125 s->nsector == 0 ||
1126 (s->nsector & (s->nsector - 1)) != 0) {
1127 ide_abort_command(s);
1128 } else {
1129 s->mult_sectors = s->nsector;
1130 s->status = READY_STAT;
1131 }
1132 ide_set_irq(s);
1133 break;
4ce900b4
FB		 1134 case WIN_VERIFY:
1135 case WIN_VERIFY_ONCE:
1136 /* do sector number check ? */
1137 s->status = READY_STAT;
1138 ide_set_irq(s);
1139 break;
5391d806
FB		 1140 case WIN_READ:
1141 case WIN_READ_ONCE:
6b136f9e
FB		 1142 if (!s->bs)
1143 goto abort_cmd;
5391d806
FB		 1144 s->req_nb_sectors = 1;
1145 ide_sector_read(s);
1146 break;
1147 case WIN_WRITE:
1148 case WIN_WRITE_ONCE:
a136e5a8 1149 s->error = 0;
5391d806
FB		 1150 s->status = SEEK_STAT;
1151 s->req_nb_sectors = 1;
1152 ide_transfer_start(s, s->io_buffer, 512, ide_sector_write);
1153 break;
1154 case WIN_MULTREAD:
1155 if (!s->mult_sectors)
1156 goto abort_cmd;
1157 s->req_nb_sectors = s->mult_sectors;
1158 ide_sector_read(s);
1159 break;
1160 case WIN_MULTWRITE:
1161 if (!s->mult_sectors)
1162 goto abort_cmd;
a136e5a8 1163 s->error = 0;
5391d806
FB		 1164 s->status = SEEK_STAT;
1165 s->req_nb_sectors = s->mult_sectors;
1166 n = s->nsector;
1167 if (n > s->req_nb_sectors)
1168 n = s->req_nb_sectors;
1169 ide_transfer_start(s, s->io_buffer, 512 * n, ide_sector_write);
1170 break;
1171 case WIN_READ_NATIVE_MAX:
1172 ide_set_sector(s, s->nb_sectors - 1);
1173 s->status = READY_STAT;
1174 ide_set_irq(s);
1175 break;
a136e5a8
FB		 1176 case WIN_CHECKPOWERMODE1:
1177 s->nsector = 0xff; /* device active or idle */
1178 s->status = READY_STAT;
1179 ide_set_irq(s);
1180 break;
5391d806
FB		 1181
1182 /* ATAPI commands */
1183 case WIN_PIDENTIFY:
1184 if (s->is_cdrom) {
1185 ide_atapi_identify(s);
1186 s->status = READY_STAT;
1187 ide_transfer_start(s, s->io_buffer, 512, ide_transfer_stop);
1188 } else {
1189 ide_abort_command(s);
1190 }
1191 ide_set_irq(s);
1192 break;
1193 case WIN_SRST:
1194 if (!s->is_cdrom)
1195 goto abort_cmd;
1196 ide_set_signature(s);
6b136f9e 1197 s->status = 0x00; /* NOTE: READY is _not_ set */
5391d806
FB		 1198 s->error = 0x01;
1199 break;
1200 case WIN_PACKETCMD:
1201 if (!s->is_cdrom)
1202 goto abort_cmd;
1203 /* DMA or overlapping commands not supported */
1204 if ((s->feature & 0x03) != 0)
1205 goto abort_cmd;
1206 s->nsector = 1;
1207 ide_transfer_start(s, s->io_buffer, ATAPI_PACKET_SIZE,
1208 ide_atapi_cmd);
1209 break;
1210 default:
1211 abort_cmd:
1212 ide_abort_command(s);
1213 ide_set_irq(s);
1214 break;
1215 }
1216 }
1217}
1218
caed8802 1219static uint32_t ide_ioport_read(void *opaque, uint32_t addr1)
5391d806 1220{
caed8802 1221 IDEState *s = ((IDEState *)opaque)->cur_drive;
5391d806
FB		 1222 uint32_t addr;
1223 int ret;
1224
1225 addr = addr1 & 7;
1226 switch(addr) {
1227 case 0:
1228 ret = 0xff;
1229 break;
1230 case 1:
1231 ret = s->error;
1232 break;
1233 case 2:
1234 ret = s->nsector & 0xff;
1235 break;
1236 case 3:
1237 ret = s->sector;
1238 break;
1239 case 4:
1240 ret = s->lcyl;
1241 break;
1242 case 5:
1243 ret = s->hcyl;
1244 break;
1245 case 6:
1246 ret = s->select;
1247 break;
1248 default:
1249 case 7:
1250 ret = s->status;
1251 pic_set_irq(s->irq, 0);
1252 break;
1253 }
1254#ifdef DEBUG_IDE
1255 printf("ide: read addr=0x%x val=%02x\n", addr1, ret);
1256#endif
1257 return ret;
1258}
1259
caed8802 1260static uint32_t ide_status_read(void *opaque, uint32_t addr)
5391d806 1261{
caed8802 1262 IDEState *s = ((IDEState *)opaque)->cur_drive;
5391d806
FB		 1263 int ret;
1264 ret = s->status;
1265#ifdef DEBUG_IDE
1266 printf("ide: read status addr=0x%x val=%02x\n", addr, ret);
1267#endif
1268 return ret;
1269}
1270
caed8802 1271static void ide_cmd_write(void *opaque, uint32_t addr, uint32_t val)
5391d806 1272{
caed8802 1273 IDEState *ide_if = opaque;
5391d806
FB		 1274 IDEState *s;
1275 int i;
1276
1277#ifdef DEBUG_IDE
1278 printf("ide: write control addr=0x%x val=%02x\n", addr, val);
1279#endif
1280 /* common for both drives */
1281 if (!(ide_if[0].cmd & IDE_CMD_RESET) &&
1282 (val & IDE_CMD_RESET)) {
1283 /* reset low to high */
1284 for(i = 0;i < 2; i++) {
1285 s = &ide_if[i];
1286 s->status = BUSY_STAT | SEEK_STAT;
1287 s->error = 0x01;
1288 }
1289 } else if ((ide_if[0].cmd & IDE_CMD_RESET) &&
1290 !(val & IDE_CMD_RESET)) {
1291 /* high to low */
1292 for(i = 0;i < 2; i++) {
1293 s = &ide_if[i];
6b136f9e
FB		 1294 if (s->is_cdrom)
1295 s->status = 0x00; /* NOTE: READY is _not_ set */
1296 else
56bf1d37 1297 s->status = READY_STAT | SEEK_STAT;
5391d806
FB		 1298 ide_set_signature(s);
1299 }
1300 }
1301
1302 ide_if[0].cmd = val;
1303 ide_if[1].cmd = val;
1304}
1305
caed8802 1306static void ide_data_writew(void *opaque, uint32_t addr, uint32_t val)
5391d806 1307{
caed8802 1308 IDEState *s = ((IDEState *)opaque)->cur_drive;
5391d806
FB		 1309 uint8_t *p;
1310
1311 p = s->data_ptr;
1312 *(uint16_t *)p = tswap16(val);
1313 p += 2;
1314 s->data_ptr = p;
1315 if (p >= s->data_end)
1316 s->end_transfer_func(s);
1317}
1318
caed8802 1319static uint32_t ide_data_readw(void *opaque, uint32_t addr)
5391d806 1320{
caed8802 1321 IDEState *s = ((IDEState *)opaque)->cur_drive;
5391d806
FB		 1322 uint8_t *p;
1323 int ret;
1324 p = s->data_ptr;
1325 ret = tswap16(*(uint16_t *)p);
1326 p += 2;
1327 s->data_ptr = p;
1328 if (p >= s->data_end)
1329 s->end_transfer_func(s);
1330 return ret;
1331}
1332
caed8802 1333static void ide_data_writel(void *opaque, uint32_t addr, uint32_t val)
5391d806 1334{
caed8802 1335 IDEState *s = ((IDEState *)opaque)->cur_drive;
5391d806
FB		 1336 uint8_t *p;
1337
1338 p = s->data_ptr;
1339 *(uint32_t *)p = tswap32(val);
1340 p += 4;
1341 s->data_ptr = p;
1342 if (p >= s->data_end)
1343 s->end_transfer_func(s);
1344}
1345
caed8802 1346static uint32_t ide_data_readl(void *opaque, uint32_t addr)
5391d806 1347{
caed8802 1348 IDEState *s = ((IDEState *)opaque)->cur_drive;
5391d806
FB		 1349 uint8_t *p;
1350 int ret;
1351
1352 p = s->data_ptr;
1353 ret = tswap32(*(uint32_t *)p);
1354 p += 4;
1355 s->data_ptr = p;
1356 if (p >= s->data_end)
1357 s->end_transfer_func(s);
1358 return ret;
1359}
1360
1361static void ide_reset(IDEState *s)
1362{
1363 s->mult_sectors = MAX_MULT_SECTORS;
1364 s->cur_drive = s;
1365 s->select = 0xa0;
1366 s->status = READY_STAT;
1367 ide_set_signature(s);
1368}
1369
1370struct partition {
1371 uint8_t boot_ind; /* 0x80 - active */
1372 uint8_t head; /* starting head */
1373 uint8_t sector; /* starting sector */
1374 uint8_t cyl; /* starting cylinder */
1375 uint8_t sys_ind; /* What partition type */
1376 uint8_t end_head; /* end head */
1377 uint8_t end_sector; /* end sector */
1378 uint8_t end_cyl; /* end cylinder */
1379 uint32_t start_sect; /* starting sector counting from 0 */
1380 uint32_t nr_sects; /* nr of sectors in partition */
1381} __attribute__((packed));
1382
1383/* try to guess the IDE geometry from the MSDOS partition table */
1384static void ide_guess_geometry(IDEState *s)
1385{
1386 uint8_t buf[512];
1387 int ret, i;
1388 struct partition *p;
1389 uint32_t nr_sects;
1390
1391 if (s->cylinders != 0)
1392 return;
1393 ret = bdrv_read(s->bs, 0, buf, 1);
1394 if (ret < 0)
1395 return;
1396 /* test msdos magic */
1397 if (buf[510] != 0x55 || buf[511] != 0xaa)
1398 return;
1399 for(i = 0; i < 4; i++) {
1400 p = ((struct partition *)(buf + 0x1be)) + i;
1401 nr_sects = tswap32(p->nr_sects);
1402 if (nr_sects && p->end_head) {
1403 /* We make the assumption that the partition terminates on
1404 a cylinder boundary */
1405 s->heads = p->end_head + 1;
1406 s->sectors = p->end_sector & 63;
1407 s->cylinders = s->nb_sectors / (s->heads * s->sectors);
1408#if 0
1409 printf("guessed partition: CHS=%d %d %d\n",
1410 s->cylinders, s->heads, s->sectors);
1411#endif
1412 }
1413 }
1414}
1415
caed8802
FB		 1416void ide_init(int iobase, int iobase2, int irq,
1417 BlockDriverState *hd0, BlockDriverState *hd1)
5391d806 1418{
caed8802
FB		 1419 IDEState *s, *ide_state;
1420 int i, cylinders, heads, secs;
5391d806 1421 int64_t nb_sectors;
5391d806 1422
caed8802
FB		 1423 ide_state = qemu_mallocz(sizeof(IDEState) * 2);
1424 if (!ide_state)
1425 return;
1426
1427 for(i = 0; i < 2; i++) {
1428 s = ide_state + i;
1429 if (i == 0)
1430 s->bs = hd0;
1431 else
1432 s->bs = hd1;
5391d806
FB		 1433 if (s->bs) {
1434 bdrv_get_geometry(s->bs, &nb_sectors);
1435 s->nb_sectors = nb_sectors;
caed8802
FB		 1436 /* if a geometry hint is available, use it */
1437 bdrv_get_geometry_hint(s->bs, &cylinders, &heads, &secs);
1438 if (cylinders != 0) {
5391d806 1439 s->cylinders = cylinders;
caed8802
FB		 1440 s->heads = heads;
1441 s->sectors = secs;
1442 } else {
1443 ide_guess_geometry(s);
1444 if (s->cylinders == 0) {
1445 /* if no geometry, use a LBA compatible one */
1446 cylinders = nb_sectors / (16 * 63);
1447 if (cylinders > 16383)
1448 cylinders = 16383;
1449 else if (cylinders < 2)
1450 cylinders = 2;
1451 s->cylinders = cylinders;
1452 s->heads = 16;
1453 s->sectors = 63;
1454 }
1455 }
1456 if (bdrv_get_type_hint(s->bs) == BDRV_TYPE_CDROM) {
1457 s->is_cdrom = 1;
1458 bdrv_set_change_cb(s->bs, cdrom_change_cb, s);
5391d806
FB		 1459 }
1460 }
caed8802 1461 s->irq = irq;
5391d806
FB		 1462 ide_reset(s);
1463 }
caed8802
FB		 1464 register_ioport_write(iobase, 8, 1, ide_ioport_write, ide_state);
1465 register_ioport_read(iobase, 8, 1, ide_ioport_read, ide_state);
1466 if (iobase2) {
1467 register_ioport_read(iobase2, 1, 1, ide_status_read, ide_state);
1468 register_ioport_write(iobase2, 1, 1, ide_cmd_write, ide_state);
5391d806 1469 }
caed8802
FB		 1470
1471 /* data ports */
1472 register_ioport_write(iobase, 2, 2, ide_data_writew, ide_state);
1473 register_ioport_read(iobase, 2, 2, ide_data_readw, ide_state);
1474 register_ioport_write(iobase, 4, 4, ide_data_writel, ide_state);
1475 register_ioport_read(iobase, 4, 4, ide_data_readl, ide_state);
5391d806 1476}
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