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make Knoppix CD-ROM probe happy
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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
43#include "cpu.h"
44#include "exec-all.h"
45
46#include "vl.h"
47
48#define NO_THUNK_TYPE_SIZE
49#include "thunk.h"
50
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 */
302#define ASC_LOGICAL_BLOCK_OOR 0x21
303#define ASC_INV_FIELD_IN_CMD_PACKET 0x24
304#define ASC_MEDIUM_NOT_PRESENT 0x3a
305#define ASC_SAVING_PARAMETERS_NOT_SUPPORTED 0x39
306
307#define SENSE_NONE 0
308#define SENSE_NOT_READY 2
309#define SENSE_ILLEGAL_REQUEST 5
310#define SENSE_UNIT_ATTENTION 6
311
312struct IDEState;
313
314typedef void EndTransferFunc(struct IDEState *);
315
316typedef struct IDEState {
317 /* ide config */
318 int is_cdrom;
319 int cdrom_locked;
320 int cylinders, heads, sectors;
321 int64_t nb_sectors;
322 int mult_sectors;
323 int irq;
324 /* ide regs */
325 uint8_t feature;
326 uint8_t error;
327 uint16_t nsector; /* 0 is 256 to ease computations */
328 uint8_t sector;
329 uint8_t lcyl;
330 uint8_t hcyl;
331 uint8_t select;
332 uint8_t status;
333 /* 0x3f6 command, only meaningful for drive 0 */
334 uint8_t cmd;
335 /* depends on bit 4 in select, only meaningful for drive 0 */
336 struct IDEState *cur_drive;
337 BlockDriverState *bs;
338 /* ATAPI specific */
339 uint8_t sense_key;
340 uint8_t asc;
341 int packet_transfer_size;
342 int elementary_transfer_size;
343 int io_buffer_index;
344 int lba;
345 /* transfer handling */
346 int req_nb_sectors; /* number of sectors per interrupt */
347 EndTransferFunc *end_transfer_func;
348 uint8_t *data_ptr;
349 uint8_t *data_end;
350 uint8_t io_buffer[MAX_MULT_SECTORS*512 + 4];
351} IDEState;
352
353IDEState ide_state[MAX_DISKS];
354IDEState *ide_table[0x400 >> 3];
355
356static inline IDEState *get_ide_interface(uint32_t addr)
357{
358 return ide_table[addr >> 3];
359}
360
361static void padstr(char *str, const char *src, int len)
362{
363 int i, v;
364 for(i = 0; i < len; i++) {
365 if (*src)
366 v = *src++;
367 else
368 v = ' ';
369 *(char *)((long)str ^ 1) = v;
370 str++;
371 }
372}
373
bd0d90b2
FB		 374static void padstr8(uint8_t *buf, int buf_size, const char *src)
375{
376 int i;
377 for(i = 0; i < buf_size; i++) {
378 if (*src)
379 buf[i] = *src++;
380 else
381 buf[i] = ' ';
382 }
383}
384
5391d806
FB		 385static void ide_identify(IDEState *s)
386{
387 uint16_t *p;
388 unsigned int oldsize;
389
390 memset(s->io_buffer, 0, 512);
391 p = (uint16_t *)s->io_buffer;
392 stw_raw(p + 0, 0x0040);
393 stw_raw(p + 1, s->cylinders);
394 stw_raw(p + 3, s->heads);
395 stw_raw(p + 4, 512 * s->sectors); /* sectors */
396 stw_raw(p + 5, 512); /* sector size */
397 stw_raw(p + 6, s->sectors);
398 padstr((uint8_t *)(p + 10), "QM00001", 20); /* serial number */
399 stw_raw(p + 20, 3); /* buffer type */
400 stw_raw(p + 21, 512); /* cache size in sectors */
401 stw_raw(p + 22, 4); /* ecc bytes */
402 padstr((uint8_t *)(p + 23), QEMU_VERSION, 8); /* firmware version */
403 padstr((uint8_t *)(p + 27), "QEMU HARDDISK", 40); /* model */
404#if MAX_MULT_SECTORS > 1
405 stw_raw(p + 47, MAX_MULT_SECTORS);
406#endif
407 stw_raw(p + 48, 1); /* dword I/O */
408 stw_raw(p + 49, 1 << 9); /* LBA supported, no DMA */
409 stw_raw(p + 51, 0x200); /* PIO transfer cycle */
410 stw_raw(p + 52, 0x200); /* DMA transfer cycle */
411 stw_raw(p + 54, s->cylinders);
412 stw_raw(p + 55, s->heads);
413 stw_raw(p + 56, s->sectors);
414 oldsize = s->cylinders * s->heads * s->sectors;
415 stw_raw(p + 57, oldsize);
416 stw_raw(p + 58, oldsize >> 16);
417 if (s->mult_sectors)
418 stw_raw(p + 59, 0x100 | s->mult_sectors);
419 stw_raw(p + 60, s->nb_sectors);
420 stw_raw(p + 61, s->nb_sectors >> 16);
421 stw_raw(p + 80, (1 << 1) | (1 << 2));
422 stw_raw(p + 82, (1 << 14));
423 stw_raw(p + 83, (1 << 14));
424 stw_raw(p + 84, (1 << 14));
425 stw_raw(p + 85, (1 << 14));
426 stw_raw(p + 86, 0);
427 stw_raw(p + 87, (1 << 14));
428}
429
430static void ide_atapi_identify(IDEState *s)
431{
432 uint16_t *p;
433
434 memset(s->io_buffer, 0, 512);
435 p = (uint16_t *)s->io_buffer;
436 /* Removable CDROM, 50us response, 12 byte packets */
437 stw_raw(p + 0, (2 << 14) | (5 << 8) | (1 << 7) | (2 << 5) | (0 << 0));
438 stw_raw(p + 1, s->cylinders);
439 stw_raw(p + 3, s->heads);
440 stw_raw(p + 4, 512 * s->sectors); /* sectors */
441 stw_raw(p + 5, 512); /* sector size */
442 stw_raw(p + 6, s->sectors);
443 padstr((uint8_t *)(p + 10), "QM00001", 20); /* serial number */
444 stw_raw(p + 20, 3); /* buffer type */
445 stw_raw(p + 21, 512); /* cache size in sectors */
446 stw_raw(p + 22, 4); /* ecc bytes */
447 padstr((uint8_t *)(p + 23), QEMU_VERSION, 8); /* firmware version */
448 padstr((uint8_t *)(p + 27), "QEMU CD-ROM", 40); /* model */
449 stw_raw(p + 48, 1); /* dword I/O (XXX: should not be set on CDROM) */
450 stw_raw(p + 49, 1 << 9); /* LBA supported, no DMA */
451 stw_raw(p + 53, 3); /* words 64-70, 54-58 valid */
452 stw_raw(p + 63, 0x103); /* DMA modes XXX: may be incorrect */
453 stw_raw(p + 64, 1); /* PIO modes */
454 stw_raw(p + 65, 0xb4); /* minimum DMA multiword tx cycle time */
455 stw_raw(p + 66, 0xb4); /* recommended DMA multiword tx cycle time */
456 stw_raw(p + 67, 0x12c); /* minimum PIO cycle time without flow control */
457 stw_raw(p + 68, 0xb4); /* minimum PIO cycle time with IORDY flow control */
458
459 stw_raw(p + 71, 30); /* in ns */
460 stw_raw(p + 72, 30); /* in ns */
461
462 stw_raw(p + 80, 0x1e); /* support up to ATA/ATAPI-4 */
463}
464
465static void ide_set_signature(IDEState *s)
466{
467 s->select &= 0xf0; /* clear head */
468 /* put signature */
469 s->nsector = 1;
470 s->sector = 1;
471 if (s->is_cdrom) {
472 s->lcyl = 0x14;
473 s->hcyl = 0xeb;
474 } else if (s->bs) {
475 s->lcyl = 0;
476 s->hcyl = 0;
477 } else {
478 s->lcyl = 0xff;
479 s->hcyl = 0xff;
480 }
481}
482
483static inline void ide_abort_command(IDEState *s)
484{
485 s->status = READY_STAT | ERR_STAT;
486 s->error = ABRT_ERR;
487}
488
489static inline void ide_set_irq(IDEState *s)
490{
491 if (!(s->cmd & IDE_CMD_DISABLE_IRQ)) {
492 pic_set_irq(s->irq, 1);
493 }
494}
495
496/* prepare data transfer and tell what to do after */
497static void ide_transfer_start(IDEState *s, uint8_t *buf, int size,
498 EndTransferFunc *end_transfer_func)
499{
500 s->end_transfer_func = end_transfer_func;
501 s->data_ptr = buf;
502 s->data_end = buf + size;
503 s->status |= DRQ_STAT;
504}
505
506static void ide_transfer_stop(IDEState *s)
507{
508 s->end_transfer_func = ide_transfer_stop;
509 s->data_ptr = s->io_buffer;
510 s->data_end = s->io_buffer;
511 s->status &= ~DRQ_STAT;
512}
513
514static int64_t ide_get_sector(IDEState *s)
515{
516 int64_t sector_num;
517 if (s->select & 0x40) {
518 /* lba */
519 sector_num = ((s->select & 0x0f) << 24) | (s->hcyl << 16) |
520 (s->lcyl << 8) | s->sector;
521 } else {
522 sector_num = ((s->hcyl << 8) | s->lcyl) * s->heads * s->sectors +
523 (s->select & 0x0f) * s->sectors +
524 (s->sector - 1);
525 }
526 return sector_num;
527}
528
529static void ide_set_sector(IDEState *s, int64_t sector_num)
530{
531 unsigned int cyl, r;
532 if (s->select & 0x40) {
533 s->select = (s->select & 0xf0) | (sector_num >> 24);
534 s->hcyl = (sector_num >> 16);
535 s->lcyl = (sector_num >> 8);
536 s->sector = (sector_num);
537 } else {
538 cyl = sector_num / (s->heads * s->sectors);
539 r = sector_num % (s->heads * s->sectors);
540 s->hcyl = cyl >> 8;
541 s->lcyl = cyl;
542 s->select = (s->select & 0xf0) | (r / s->sectors);
543 s->sector = (r % s->sectors) + 1;
544 }
545}
546
547static void ide_sector_read(IDEState *s)
548{
549 int64_t sector_num;
550 int ret, n;
551
552 s->status = READY_STAT | SEEK_STAT;
553 sector_num = ide_get_sector(s);
554 n = s->nsector;
555 if (n == 0) {
556 /* no more sector to read from disk */
557 ide_transfer_stop(s);
558 } else {
559#if defined(DEBUG_IDE)
560 printf("read sector=%Ld\n", sector_num);
561#endif
562 if (n > s->req_nb_sectors)
563 n = s->req_nb_sectors;
564 ret = bdrv_read(s->bs, sector_num, s->io_buffer, n);
565 ide_transfer_start(s, s->io_buffer, 512 * n, ide_sector_read);
566 ide_set_irq(s);
567 ide_set_sector(s, sector_num + n);
568 s->nsector -= n;
569 }
570}
571
572static void ide_sector_write(IDEState *s)
573{
574 int64_t sector_num;
575 int ret, n, n1;
576
577 s->status = READY_STAT | SEEK_STAT;
578 sector_num = ide_get_sector(s);
579#if defined(DEBUG_IDE)
580 printf("write sector=%Ld\n", sector_num);
581#endif
582 n = s->nsector;
583 if (n > s->req_nb_sectors)
584 n = s->req_nb_sectors;
585 ret = bdrv_write(s->bs, sector_num, s->io_buffer, n);
586 s->nsector -= n;
587 if (s->nsector == 0) {
588 /* no more sector to write */
589 ide_transfer_stop(s);
590 } else {
591 n1 = s->nsector;
592 if (n1 > s->req_nb_sectors)
593 n1 = s->req_nb_sectors;
594 ide_transfer_start(s, s->io_buffer, 512 * n1, ide_sector_write);
595 }
596 ide_set_sector(s, sector_num + n);
597 ide_set_irq(s);
598}
599
600static void ide_atapi_cmd_ok(IDEState *s)
601{
602 s->error = 0;
603 s->status = READY_STAT;
604 s->nsector = (s->nsector & ~7) | ATAPI_INT_REASON_IO | ATAPI_INT_REASON_CD;
605 ide_set_irq(s);
606}
607
608static void ide_atapi_cmd_error(IDEState *s, int sense_key, int asc)
609{
610#ifdef DEBUG_IDE_ATAPI
611 printf("atapi_cmd_error: sense=0x%x asc=0x%x\n", sense_key, asc);
612#endif
613 s->error = sense_key << 4;
614 s->status = READY_STAT | ERR_STAT;
615 s->nsector = (s->nsector & ~7) | ATAPI_INT_REASON_IO | ATAPI_INT_REASON_CD;
616 s->sense_key = sense_key;
617 s->asc = asc;
618 ide_set_irq(s);
619}
620
621static inline void cpu_to_ube16(uint8_t *buf, int val)
622{
623 buf[0] = val >> 8;
624 buf[1] = val;
625}
626
627static inline void cpu_to_ube32(uint8_t *buf, unsigned int val)
628{
629 buf[0] = val >> 24;
630 buf[1] = val >> 16;
631 buf[2] = val >> 8;
632 buf[3] = val;
633}
634
635static inline int ube16_to_cpu(const uint8_t *buf)
636{
637 return (buf[0] << 8) | buf[1];
638}
639
640static inline int ube32_to_cpu(const uint8_t *buf)
641{
642 return (buf[0] << 24) | (buf[1] << 16) | (buf[2] << 8) | buf[3];
643}
644
645/* The whole ATAPI transfer logic is handled in this function */
646static void ide_atapi_cmd_reply_end(IDEState *s)
647{
648 int byte_count_limit, size;
649#ifdef DEBUG_IDE_ATAPI
650 printf("reply: tx_size=%d elem_tx_size=%d index=%d\n",
651 s->packet_transfer_size,
652 s->elementary_transfer_size,
653 s->io_buffer_index);
654#endif
655 if (s->packet_transfer_size <= 0) {
656 /* end of transfer */
657 ide_transfer_stop(s);
658 s->status = READY_STAT;
659 s->nsector = (s->nsector & ~7) | ATAPI_INT_REASON_IO | ATAPI_INT_REASON_CD;
660 ide_set_irq(s);
661#ifdef DEBUG_IDE_ATAPI
662 printf("status=0x%x\n", s->status);
663#endif
664 } else {
665 /* see if a new sector must be read */
666 if (s->lba != -1 && s->io_buffer_index >= 2048) {
667 bdrv_read(s->bs, (int64_t)s->lba << 2, s->io_buffer, 4);
668 s->lba++;
669 s->io_buffer_index = 0;
670 }
671 if (s->elementary_transfer_size > 0) {
672 /* there are some data left to transmit in this elementary
673 transfer */
674 size = 2048 - s->io_buffer_index;
675 if (size > s->elementary_transfer_size)
676 size = s->elementary_transfer_size;
677 ide_transfer_start(s, s->io_buffer + s->io_buffer_index,
678 size, ide_atapi_cmd_reply_end);
679 s->packet_transfer_size -= size;
680 s->elementary_transfer_size -= size;
681 s->io_buffer_index += size;
682 } else {
683 /* a new transfer is needed */
684 s->nsector = (s->nsector & ~7) | ATAPI_INT_REASON_IO;
685 byte_count_limit = s->lcyl | (s->hcyl << 8);
686#ifdef DEBUG_IDE_ATAPI
687 printf("byte_count_limit=%d\n", byte_count_limit);
688#endif
689 if (byte_count_limit == 0xffff)
690 byte_count_limit--;
691 size = s->packet_transfer_size;
692 if (size > byte_count_limit) {
693 /* byte count limit must be even if this case */
694 if (byte_count_limit & 1)
695 byte_count_limit--;
696 size = byte_count_limit;
697 } else {
698 s->lcyl = size;
699 s->hcyl = size >> 8;
700 }
701 s->elementary_transfer_size = size;
702 /* we cannot transmit more than one sector at a time */
703 if (s->lba != -1) {
704 if (size > (2048 - s->io_buffer_index))
705 size = (2048 - s->io_buffer_index);
706 }
707 ide_transfer_start(s, s->io_buffer + s->io_buffer_index,
708 size, ide_atapi_cmd_reply_end);
709 s->packet_transfer_size -= size;
710 s->elementary_transfer_size -= size;
711 s->io_buffer_index += size;
712 ide_set_irq(s);
713#ifdef DEBUG_IDE_ATAPI
714 printf("status=0x%x\n", s->status);
715#endif
716 }
717 }
718}
719
720/* send a reply of 'size' bytes in s->io_buffer to an ATAPI command */
721static void ide_atapi_cmd_reply(IDEState *s, int size, int max_size)
722{
723 if (size > max_size)
724 size = max_size;
725 s->lba = -1; /* no sector read */
726 s->packet_transfer_size = size;
727 s->elementary_transfer_size = 0;
728 s->io_buffer_index = 0;
729
730 s->status = READY_STAT;
731 ide_atapi_cmd_reply_end(s);
732}
733
734/* start a CD-CDROM read command */
735static void ide_atapi_cmd_read(IDEState *s, int lba, int nb_sectors)
736{
737#ifdef DEBUG_IDE_ATAPI
738 printf("read: LBA=%d nb_sectors=%d\n", lba, nb_sectors);
739#endif
740 s->lba = lba;
741 s->packet_transfer_size = nb_sectors * 2048;
742 s->elementary_transfer_size = 0;
743 s->io_buffer_index = 2048;
744
745 s->status = READY_STAT;
746 ide_atapi_cmd_reply_end(s);
747}
748
749/* same toc as bochs. Return -1 if error or the toc length */
750static int cdrom_read_toc(IDEState *s, uint8_t *buf, int msf, int start_track)
751{
752 uint8_t *q;
753 int nb_sectors, len;
754
755 if (start_track > 1 && start_track != 0xaa)
756 return -1;
757 q = buf + 2;
758 *q++ = 1;
759 *q++ = 1;
760 if (start_track <= 1) {
761 *q++ = 0; /* reserved */
762 *q++ = 0x14; /* ADR, control */
763 *q++ = 1; /* track number */
764 *q++ = 0; /* reserved */
765 if (msf) {
766 *q++ = 0; /* reserved */
767 *q++ = 0; /* minute */
768 *q++ = 2; /* second */
769 *q++ = 0; /* frame */
770 } else {
771 /* sector 0 */
772 cpu_to_ube32(q, 0);
773 q += 4;
774 }
775 }
776 /* lead out track */
777 *q++ = 0; /* reserved */
778 *q++ = 0x16; /* ADR, control */
779 *q++ = 0xaa; /* track number */
780 *q++ = 0; /* reserved */
781 nb_sectors = s->nb_sectors >> 2;
782 if (msf) {
783 *q++ = 0; /* reserved */
784 *q++ = ((nb_sectors + 150) / 75) / 60;
785 *q++ = ((nb_sectors + 150) / 75) % 60;
786 *q++ = (nb_sectors + 150) % 75;
787 } else {
788 cpu_to_ube32(q, nb_sectors);
789 q += 4;
790 }
791 len = q - buf;
792 cpu_to_ube16(buf, len - 2);
793 return len;
794}
795
796static void ide_atapi_cmd(IDEState *s)
797{
798 const uint8_t *packet;
799 uint8_t *buf;
800 int max_len;
801
802 packet = s->io_buffer;
803 buf = s->io_buffer;
804#ifdef DEBUG_IDE_ATAPI
805 {
806 int i;
807 printf("ATAPI limit=0x%x packet:", s->lcyl | (s->hcyl << 8));
808 for(i = 0; i < ATAPI_PACKET_SIZE; i++) {
809 printf(" %02x", packet[i]);
810 }
811 printf("\n");
812 }
813#endif
814 switch(s->io_buffer[0]) {
815 case GPCMD_TEST_UNIT_READY:
816 if (s->bs) {
817 ide_atapi_cmd_ok(s);
818 } else {
819 ide_atapi_cmd_error(s, SENSE_NOT_READY,
820 ASC_MEDIUM_NOT_PRESENT);
821 }
822 break;
823 case GPCMD_MODE_SENSE_10:
824 {
825 int action, code;
826 max_len = ube16_to_cpu(packet + 7);
827 action = packet[2] >> 6;
828 code = packet[2] & 0x3f;
829 switch(action) {
830 case 0: /* current values */
831 switch(code) {
832 case 0x01: /* error recovery */
833 cpu_to_ube16(&buf[0], 16 + 6);
834 buf[2] = 0x70;
835 buf[3] = 0;
836 buf[4] = 0;
837 buf[5] = 0;
838 buf[6] = 0;
839 buf[7] = 0;
840
841 buf[8] = 0x01;
842 buf[9] = 0x06;
843 buf[10] = 0x00;
844 buf[11] = 0x05;
845 buf[12] = 0x00;
846 buf[13] = 0x00;
847 buf[14] = 0x00;
848 buf[15] = 0x00;
849 ide_atapi_cmd_reply(s, 16, max_len);
850 break;
851 case 0x2a:
852 cpu_to_ube16(&buf[0], 28 + 6);
853 buf[2] = 0x70;
854 buf[3] = 0;
855 buf[4] = 0;
856 buf[5] = 0;
857 buf[6] = 0;
858 buf[7] = 0;
859
860 buf[8] = 0x2a;
861 buf[9] = 0x12;
862 buf[10] = 0x00;
863 buf[11] = 0x00;
864
865 buf[12] = 0x70;
866 buf[13] = 3 << 5;
867 buf[14] = (1 << 0) | (1 << 3) | (1 << 5);
868 if (s->cdrom_locked)
869 buf[6] |= 1 << 1;
870 buf[15] = 0x00;
871 cpu_to_ube16(&buf[16], 706);
872 buf[18] = 0;
873 buf[19] = 2;
874 cpu_to_ube16(&buf[20], 512);
875 cpu_to_ube16(&buf[22], 706);
876 buf[24] = 0;
877 buf[25] = 0;
878 buf[26] = 0;
879 buf[27] = 0;
880 ide_atapi_cmd_reply(s, 28, max_len);
881 break;
882 default:
883 goto error_cmd;
884 }
885 break;
886 case 1: /* changeable values */
887 goto error_cmd;
888 case 2: /* default values */
889 goto error_cmd;
890 default:
891 case 3: /* saved values */
892 ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST,
893 ASC_SAVING_PARAMETERS_NOT_SUPPORTED);
894 break;
895 }
896 }
897 break;
898 case GPCMD_REQUEST_SENSE:
899 max_len = packet[4];
900 memset(buf, 0, 18);
901 buf[0] = 0x70 | (1 << 7);
902 buf[2] = s->sense_key;
903 buf[7] = 10;
904 buf[12] = s->asc;
905 ide_atapi_cmd_reply(s, 18, max_len);
906 break;
907 case GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL:
908 if (s->bs) {
909 s->cdrom_locked = packet[4] & 1;
910 ide_atapi_cmd_ok(s);
911 } else {
912 ide_atapi_cmd_error(s, SENSE_NOT_READY,
913 ASC_MEDIUM_NOT_PRESENT);
914 }
915 break;
916 case GPCMD_READ_10:
917 case GPCMD_READ_12:
918 {
919 int nb_sectors, lba;
920
921 if (!s->bs) {
922 ide_atapi_cmd_error(s, SENSE_NOT_READY,
923 ASC_MEDIUM_NOT_PRESENT);
924 break;
925 }
926 if (packet[0] == GPCMD_READ_10)
927 nb_sectors = ube16_to_cpu(packet + 7);
928 else
929 nb_sectors = ube32_to_cpu(packet + 6);
930 lba = ube32_to_cpu(packet + 2);
931 if (nb_sectors == 0) {
932 ide_atapi_cmd_ok(s);
933 break;
934 }
935 if (((int64_t)(lba + nb_sectors) << 2) > s->nb_sectors) {
936 ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST,
937 ASC_LOGICAL_BLOCK_OOR);
938 break;
939 }
940 ide_atapi_cmd_read(s, lba, nb_sectors);
941 }
942 break;
943 case GPCMD_SEEK:
944 {
945 int lba;
946 if (!s->bs) {
947 ide_atapi_cmd_error(s, SENSE_NOT_READY,
948 ASC_MEDIUM_NOT_PRESENT);
949 break;
950 }
951 lba = ube32_to_cpu(packet + 2);
952 if (((int64_t)lba << 2) > s->nb_sectors) {
953 ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST,
954 ASC_LOGICAL_BLOCK_OOR);
955 break;
956 }
957 ide_atapi_cmd_ok(s);
958 }
959 break;
960 case GPCMD_START_STOP_UNIT:
961 {
962 int start, eject;
963 start = packet[4] & 1;
964 eject = (packet[4] >> 1) & 1;
965
966 /* XXX: currently none implemented */
967 ide_atapi_cmd_ok(s);
968 }
969 break;
970 case GPCMD_MECHANISM_STATUS:
971 {
972 max_len = ube16_to_cpu(packet + 8);
973 cpu_to_ube16(buf, 0);
974 /* no current LBA */
975 buf[2] = 0;
976 buf[3] = 0;
977 buf[4] = 0;
978 buf[5] = 1;
979 cpu_to_ube16(buf + 6, 0);
980 ide_atapi_cmd_reply(s, 8, max_len);
981 }
982 break;
983 case GPCMD_READ_TOC_PMA_ATIP:
984 {
985 int format, msf, start_track, len;
986
987 if (!s->bs) {
988 ide_atapi_cmd_error(s, SENSE_NOT_READY,
989 ASC_MEDIUM_NOT_PRESENT);
990 break;
991 }
992 max_len = ube16_to_cpu(packet + 7);
993 format = packet[9] >> 6;
994 msf = (packet[1] >> 1) & 1;
995 start_track = packet[6];
996 switch(format) {
997 case 0:
998 len = cdrom_read_toc(s, buf, msf, start_track);
999 if (len < 0)
1000 goto error_cmd;
1001 ide_atapi_cmd_reply(s, len, max_len);
1002 break;
1003 case 1:
1004 /* multi session : only a single session defined */
1005 memset(buf, 0, 12);
1006 buf[1] = 0x0a;
1007 buf[2] = 0x01;
1008 buf[3] = 0x01;
1009 ide_atapi_cmd_reply(s, 12, max_len);
1010 break;
1011 default:
1012 goto error_cmd;
1013 }
1014 }
1015 break;
1016 case GPCMD_READ_CDVD_CAPACITY:
1017 if (!s->bs) {
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
FB		 1042 default:
1043 error_cmd:
1044 ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST,
1045 ASC_INV_FIELD_IN_CMD_PACKET);
1046 break;
1047 }
1048}
1049
1050static void ide_ioport_write(CPUX86State *env, uint32_t addr, uint32_t val)
1051{
1052 IDEState *ide_if = get_ide_interface(addr);
1053 IDEState *s = ide_if->cur_drive;
1054 int unit, n;
1055
1056#ifdef DEBUG_IDE
1057 printf("IDE: write addr=0x%x val=0x%02x\n", addr, val);
1058#endif
1059 addr &= 7;
1060 switch(addr) {
1061 case 0:
1062 break;
1063 case 1:
1064 s->feature = val;
1065 break;
1066 case 2:
1067 if (val == 0)
1068 val = 256;
1069 s->nsector = val;
1070 break;
1071 case 3:
1072 s->sector = val;
1073 break;
1074 case 4:
1075 s->lcyl = val;
1076 break;
1077 case 5:
1078 s->hcyl = val;
1079 break;
1080 case 6:
1081 /* select drive */
1082 unit = (val >> 4) & 1;
1083 s = ide_if + unit;
1084 ide_if->cur_drive = s;
1085 s->select = val;
1086 break;
1087 default:
1088 case 7:
1089 /* command */
1090#if defined(DEBUG_IDE)
1091 printf("ide: CMD=%02x\n", val);
1092#endif
1093 switch(val) {
1094 case WIN_IDENTIFY:
1095 if (s->bs && !s->is_cdrom) {
1096 ide_identify(s);
1097 s->status = READY_STAT;
1098 ide_transfer_start(s, s->io_buffer, 512, ide_transfer_stop);
1099 } else {
1100 if (s->is_cdrom) {
1101 ide_set_signature(s);
1102 }
1103 ide_abort_command(s);
1104 }
1105 ide_set_irq(s);
1106 break;
1107 case WIN_SPECIFY:
1108 case WIN_RECAL:
1109 s->status = READY_STAT;
1110 ide_set_irq(s);
1111 break;
1112 case WIN_SETMULT:
1113 if (s->nsector > MAX_MULT_SECTORS ||
1114 s->nsector == 0 ||
1115 (s->nsector & (s->nsector - 1)) != 0) {
1116 ide_abort_command(s);
1117 } else {
1118 s->mult_sectors = s->nsector;
1119 s->status = READY_STAT;
1120 }
1121 ide_set_irq(s);
1122 break;
1123 case WIN_READ:
1124 case WIN_READ_ONCE:
1125 s->req_nb_sectors = 1;
1126 ide_sector_read(s);
1127 break;
1128 case WIN_WRITE:
1129 case WIN_WRITE_ONCE:
1130 s->status = SEEK_STAT;
1131 s->req_nb_sectors = 1;
1132 ide_transfer_start(s, s->io_buffer, 512, ide_sector_write);
1133 break;
1134 case WIN_MULTREAD:
1135 if (!s->mult_sectors)
1136 goto abort_cmd;
1137 s->req_nb_sectors = s->mult_sectors;
1138 ide_sector_read(s);
1139 break;
1140 case WIN_MULTWRITE:
1141 if (!s->mult_sectors)
1142 goto abort_cmd;
1143 s->status = SEEK_STAT;
1144 s->req_nb_sectors = s->mult_sectors;
1145 n = s->nsector;
1146 if (n > s->req_nb_sectors)
1147 n = s->req_nb_sectors;
1148 ide_transfer_start(s, s->io_buffer, 512 * n, ide_sector_write);
1149 break;
1150 case WIN_READ_NATIVE_MAX:
1151 ide_set_sector(s, s->nb_sectors - 1);
1152 s->status = READY_STAT;
1153 ide_set_irq(s);
1154 break;
1155
1156 /* ATAPI commands */
1157 case WIN_PIDENTIFY:
1158 if (s->is_cdrom) {
1159 ide_atapi_identify(s);
1160 s->status = READY_STAT;
1161 ide_transfer_start(s, s->io_buffer, 512, ide_transfer_stop);
1162 } else {
1163 ide_abort_command(s);
1164 }
1165 ide_set_irq(s);
1166 break;
1167 case WIN_SRST:
1168 if (!s->is_cdrom)
1169 goto abort_cmd;
1170 ide_set_signature(s);
1171 s->status = READY_STAT;
1172 s->error = 0x01;
1173 break;
1174 case WIN_PACKETCMD:
1175 if (!s->is_cdrom)
1176 goto abort_cmd;
1177 /* DMA or overlapping commands not supported */
1178 if ((s->feature & 0x03) != 0)
1179 goto abort_cmd;
1180 s->nsector = 1;
1181 ide_transfer_start(s, s->io_buffer, ATAPI_PACKET_SIZE,
1182 ide_atapi_cmd);
1183 break;
1184 default:
1185 abort_cmd:
1186 ide_abort_command(s);
1187 ide_set_irq(s);
1188 break;
1189 }
1190 }
1191}
1192
1193static uint32_t ide_ioport_read(CPUX86State *env, uint32_t addr1)
1194{
1195 IDEState *s = get_ide_interface(addr1)->cur_drive;
1196 uint32_t addr;
1197 int ret;
1198
1199 addr = addr1 & 7;
1200 switch(addr) {
1201 case 0:
1202 ret = 0xff;
1203 break;
1204 case 1:
1205 ret = s->error;
1206 break;
1207 case 2:
1208 ret = s->nsector & 0xff;
1209 break;
1210 case 3:
1211 ret = s->sector;
1212 break;
1213 case 4:
1214 ret = s->lcyl;
1215 break;
1216 case 5:
1217 ret = s->hcyl;
1218 break;
1219 case 6:
1220 ret = s->select;
1221 break;
1222 default:
1223 case 7:
1224 ret = s->status;
1225 pic_set_irq(s->irq, 0);
1226 break;
1227 }
1228#ifdef DEBUG_IDE
1229 printf("ide: read addr=0x%x val=%02x\n", addr1, ret);
1230#endif
1231 return ret;
1232}
1233
1234static uint32_t ide_status_read(CPUX86State *env, uint32_t addr)
1235{
1236 IDEState *s = get_ide_interface(addr)->cur_drive;
1237 int ret;
1238 ret = s->status;
1239#ifdef DEBUG_IDE
1240 printf("ide: read status addr=0x%x val=%02x\n", addr, ret);
1241#endif
1242 return ret;
1243}
1244
1245static void ide_cmd_write(CPUX86State *env, uint32_t addr, uint32_t val)
1246{
1247 IDEState *ide_if = get_ide_interface(addr);
1248 IDEState *s;
1249 int i;
1250
1251#ifdef DEBUG_IDE
1252 printf("ide: write control addr=0x%x val=%02x\n", addr, val);
1253#endif
1254 /* common for both drives */
1255 if (!(ide_if[0].cmd & IDE_CMD_RESET) &&
1256 (val & IDE_CMD_RESET)) {
1257 /* reset low to high */
1258 for(i = 0;i < 2; i++) {
1259 s = &ide_if[i];
1260 s->status = BUSY_STAT | SEEK_STAT;
1261 s->error = 0x01;
1262 }
1263 } else if ((ide_if[0].cmd & IDE_CMD_RESET) &&
1264 !(val & IDE_CMD_RESET)) {
1265 /* high to low */
1266 for(i = 0;i < 2; i++) {
1267 s = &ide_if[i];
1268 s->status = READY_STAT;
1269 ide_set_signature(s);
1270 }
1271 }
1272
1273 ide_if[0].cmd = val;
1274 ide_if[1].cmd = val;
1275}
1276
1277static void ide_data_writew(CPUX86State *env, uint32_t addr, uint32_t val)
1278{
1279 IDEState *s = get_ide_interface(addr)->cur_drive;
1280 uint8_t *p;
1281
1282 p = s->data_ptr;
1283 *(uint16_t *)p = tswap16(val);
1284 p += 2;
1285 s->data_ptr = p;
1286 if (p >= s->data_end)
1287 s->end_transfer_func(s);
1288}
1289
1290static uint32_t ide_data_readw(CPUX86State *env, uint32_t addr)
1291{
1292 IDEState *s = get_ide_interface(addr)->cur_drive;
1293 uint8_t *p;
1294 int ret;
1295 p = s->data_ptr;
1296 ret = tswap16(*(uint16_t *)p);
1297 p += 2;
1298 s->data_ptr = p;
1299 if (p >= s->data_end)
1300 s->end_transfer_func(s);
1301 return ret;
1302}
1303
1304static void ide_data_writel(CPUX86State *env, uint32_t addr, uint32_t val)
1305{
1306 IDEState *s = get_ide_interface(addr)->cur_drive;
1307 uint8_t *p;
1308
1309 p = s->data_ptr;
1310 *(uint32_t *)p = tswap32(val);
1311 p += 4;
1312 s->data_ptr = p;
1313 if (p >= s->data_end)
1314 s->end_transfer_func(s);
1315}
1316
1317static uint32_t ide_data_readl(CPUX86State *env, uint32_t addr)
1318{
1319 IDEState *s = get_ide_interface(addr)->cur_drive;
1320 uint8_t *p;
1321 int ret;
1322
1323 p = s->data_ptr;
1324 ret = tswap32(*(uint32_t *)p);
1325 p += 4;
1326 s->data_ptr = p;
1327 if (p >= s->data_end)
1328 s->end_transfer_func(s);
1329 return ret;
1330}
1331
1332static void ide_reset(IDEState *s)
1333{
1334 s->mult_sectors = MAX_MULT_SECTORS;
1335 s->cur_drive = s;
1336 s->select = 0xa0;
1337 s->status = READY_STAT;
1338 ide_set_signature(s);
1339}
1340
1341struct partition {
1342 uint8_t boot_ind; /* 0x80 - active */
1343 uint8_t head; /* starting head */
1344 uint8_t sector; /* starting sector */
1345 uint8_t cyl; /* starting cylinder */
1346 uint8_t sys_ind; /* What partition type */
1347 uint8_t end_head; /* end head */
1348 uint8_t end_sector; /* end sector */
1349 uint8_t end_cyl; /* end cylinder */
1350 uint32_t start_sect; /* starting sector counting from 0 */
1351 uint32_t nr_sects; /* nr of sectors in partition */
1352} __attribute__((packed));
1353
1354/* try to guess the IDE geometry from the MSDOS partition table */
1355static void ide_guess_geometry(IDEState *s)
1356{
1357 uint8_t buf[512];
1358 int ret, i;
1359 struct partition *p;
1360 uint32_t nr_sects;
1361
1362 if (s->cylinders != 0)
1363 return;
1364 ret = bdrv_read(s->bs, 0, buf, 1);
1365 if (ret < 0)
1366 return;
1367 /* test msdos magic */
1368 if (buf[510] != 0x55 || buf[511] != 0xaa)
1369 return;
1370 for(i = 0; i < 4; i++) {
1371 p = ((struct partition *)(buf + 0x1be)) + i;
1372 nr_sects = tswap32(p->nr_sects);
1373 if (nr_sects && p->end_head) {
1374 /* We make the assumption that the partition terminates on
1375 a cylinder boundary */
1376 s->heads = p->end_head + 1;
1377 s->sectors = p->end_sector & 63;
1378 s->cylinders = s->nb_sectors / (s->heads * s->sectors);
1379#if 0
1380 printf("guessed partition: CHS=%d %d %d\n",
1381 s->cylinders, s->heads, s->sectors);
1382#endif
1383 }
1384 }
1385}
1386
1387void ide_init(void)
1388{
1389 IDEState *s;
1390 int i, cylinders, iobase, iobase2;
1391 int64_t nb_sectors;
1392 static const int ide_iobase[2] = { 0x1f0, 0x170 };
1393 static const int ide_iobase2[2] = { 0x3f6, 0x376 };
1394 static const int ide_irq[2] = { 14, 15 };
1395
1396 for(i = 0; i < MAX_DISKS; i++) {
1397 s = &ide_state[i];
1398 s->bs = bs_table[i];
1399 if (s->bs) {
1400 bdrv_get_geometry(s->bs, &nb_sectors);
1401 s->nb_sectors = nb_sectors;
1402 ide_guess_geometry(s);
1403 if (s->cylinders == 0) {
1404 /* if no geometry, use a LBA compatible one */
1405 cylinders = nb_sectors / (16 * 63);
1406 if (cylinders > 16383)
1407 cylinders = 16383;
1408 else if (cylinders < 2)
1409 cylinders = 2;
1410 s->cylinders = cylinders;
1411 s->heads = 16;
1412 s->sectors = 63;
1413 }
1414 }
1415 s->irq = ide_irq[i >> 1];
1416 ide_reset(s);
1417 }
1418 for(i = 0; i < (MAX_DISKS / 2); i++) {
1419 iobase = ide_iobase[i];
1420 iobase2 = ide_iobase2[i];
1421 ide_table[iobase >> 3] = &ide_state[2 * i];
1422 if (ide_iobase2[i])
1423 ide_table[iobase2 >> 3] = &ide_state[2 * i];
1424 register_ioport_write(iobase, 8, ide_ioport_write, 1);
1425 register_ioport_read(iobase, 8, ide_ioport_read, 1);
1426 register_ioport_read(iobase2, 1, ide_status_read, 1);
1427 register_ioport_write(iobase2, 1, ide_cmd_write, 1);
1428
1429 /* data ports */
1430 register_ioport_write(iobase, 2, ide_data_writew, 2);
1431 register_ioport_read(iobase, 2, ide_data_readw, 2);
1432 register_ioport_write(iobase, 4, ide_data_writel, 4);
1433 register_ioport_read(iobase, 4, ide_data_readl, 4);
1434 }
1435}
1436
1437void ide_set_geometry(int n, int cyls, int heads, int secs)
1438{
1439 ide_state[n].cylinders = cyls;
1440 ide_state[n].heads = heads;
1441 ide_state[n].sectors = secs;
1442}
1443
1444void ide_set_cdrom(int n, int is_cdrom)
1445{
1446 ide_state[n].is_cdrom = is_cdrom;
1447}
Qemu copy for testing