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1 | /* |
2 | * cdrom.c IOCTLs handling for ide-cd driver. | |
3 | * | |
4 | * Copyright (C) 1994-1996 Scott Snyder <snyder@fnald0.fnal.gov> | |
5 | * Copyright (C) 1996-1998 Erik Andersen <andersee@debian.org> | |
6 | * Copyright (C) 1998-2000 Jens Axboe <axboe@suse.de> | |
7 | */ | |
8 | ||
9 | #include <linux/kernel.h> | |
10 | #include <linux/cdrom.h> | |
11 | #include <linux/ide.h> | |
12 | ||
13 | #include "ide-cd.h" | |
14 | ||
15 | int ide_cdrom_lock_door(struct cdrom_device_info *cdi, int lock) | |
16 | { | |
17 | ide_drive_t *drive = cdi->handle; | |
18 | ||
19 | return ide_cd_lockdoor(drive, lock, NULL); | |
20 | } | |
21 | ||
22 | /* | |
23 | * ATAPI devices are free to select the speed you request or any slower | |
24 | * rate. :-( Requesting too fast a speed will _not_ produce an error. | |
25 | */ | |
26 | int ide_cdrom_select_speed(struct cdrom_device_info *cdi, int speed) | |
27 | { | |
28 | ide_drive_t *drive = cdi->handle; | |
29 | struct cdrom_info *cd = drive->driver_data; | |
30 | struct request rq; | |
31 | struct request_sense sense; | |
32 | u8 buf[ATAPI_CAPABILITIES_PAGE_SIZE]; | |
33 | int stat; | |
34 | ||
35 | ide_cd_init_rq(drive, &rq); | |
36 | ||
37 | rq.sense = &sense; | |
38 | ||
39 | if (speed == 0) | |
40 | speed = 0xffff; /* set to max */ | |
41 | else | |
42 | speed *= 177; /* Nx to kbytes/s */ | |
43 | ||
44 | rq.cmd[0] = GPCMD_SET_SPEED; | |
45 | /* Read Drive speed in kbytes/second MSB/LSB */ | |
46 | rq.cmd[2] = (speed >> 8) & 0xff; | |
47 | rq.cmd[3] = speed & 0xff; | |
48 | if ((cdi->mask & (CDC_CD_R | CDC_CD_RW | CDC_DVD_R)) != | |
49 | (CDC_CD_R | CDC_CD_RW | CDC_DVD_R)) { | |
50 | /* Write Drive speed in kbytes/second MSB/LSB */ | |
51 | rq.cmd[4] = (speed >> 8) & 0xff; | |
52 | rq.cmd[5] = speed & 0xff; | |
53 | } | |
54 | ||
55 | stat = ide_cd_queue_pc(drive, &rq); | |
56 | ||
57 | if (!ide_cdrom_get_capabilities(drive, buf)) { | |
58 | ide_cdrom_update_speed(drive, buf); | |
59 | cdi->speed = cd->current_speed; | |
60 | } | |
61 | ||
62 | return 0; | |
63 | } | |
64 | ||
65 | int ide_cdrom_get_last_session(struct cdrom_device_info *cdi, | |
66 | struct cdrom_multisession *ms_info) | |
67 | { | |
68 | struct atapi_toc *toc; | |
69 | ide_drive_t *drive = cdi->handle; | |
70 | struct cdrom_info *info = drive->driver_data; | |
71 | struct request_sense sense; | |
72 | int ret; | |
73 | ||
74 | if ((info->cd_flags & IDE_CD_FLAG_TOC_VALID) == 0 || !info->toc) { | |
75 | ret = ide_cd_read_toc(drive, &sense); | |
76 | if (ret) | |
77 | return ret; | |
78 | } | |
79 | ||
80 | toc = info->toc; | |
81 | ms_info->addr.lba = toc->last_session_lba; | |
82 | ms_info->xa_flag = toc->xa_flag; | |
83 | ||
84 | return 0; | |
85 | } | |
86 | ||
87 | int ide_cdrom_get_mcn(struct cdrom_device_info *cdi, | |
88 | struct cdrom_mcn *mcn_info) | |
89 | { | |
90 | ide_drive_t *drive = cdi->handle; | |
91 | int stat, mcnlen; | |
92 | struct request rq; | |
93 | char buf[24]; | |
94 | ||
95 | ide_cd_init_rq(drive, &rq); | |
96 | ||
97 | rq.data = buf; | |
98 | rq.data_len = sizeof(buf); | |
99 | ||
100 | rq.cmd[0] = GPCMD_READ_SUBCHANNEL; | |
101 | rq.cmd[1] = 2; /* MSF addressing */ | |
102 | rq.cmd[2] = 0x40; /* request subQ data */ | |
103 | rq.cmd[3] = 2; /* format */ | |
104 | rq.cmd[8] = sizeof(buf); | |
105 | ||
106 | stat = ide_cd_queue_pc(drive, &rq); | |
107 | if (stat) | |
108 | return stat; | |
109 | ||
110 | mcnlen = sizeof(mcn_info->medium_catalog_number) - 1; | |
111 | memcpy(mcn_info->medium_catalog_number, buf + 9, mcnlen); | |
112 | mcn_info->medium_catalog_number[mcnlen] = '\0'; | |
113 | ||
114 | return 0; | |
115 | } | |
116 | ||
117 | int ide_cdrom_reset(struct cdrom_device_info *cdi) | |
118 | { | |
119 | ide_drive_t *drive = cdi->handle; | |
120 | struct cdrom_info *cd = drive->driver_data; | |
121 | struct request_sense sense; | |
122 | struct request req; | |
123 | int ret; | |
124 | ||
125 | ide_cd_init_rq(drive, &req); | |
126 | req.cmd_type = REQ_TYPE_SPECIAL; | |
127 | req.cmd_flags = REQ_QUIET; | |
128 | ret = ide_do_drive_cmd(drive, &req, ide_wait); | |
129 | ||
130 | /* | |
131 | * A reset will unlock the door. If it was previously locked, | |
132 | * lock it again. | |
133 | */ | |
134 | if (cd->cd_flags & IDE_CD_FLAG_DOOR_LOCKED) | |
135 | (void)ide_cd_lockdoor(drive, 1, &sense); | |
136 | ||
137 | return ret; | |
138 | } | |
139 | ||
140 | static int ide_cd_get_toc_entry(ide_drive_t *drive, int track, | |
141 | struct atapi_toc_entry **ent) | |
142 | { | |
143 | struct cdrom_info *info = drive->driver_data; | |
144 | struct atapi_toc *toc = info->toc; | |
145 | int ntracks; | |
146 | ||
147 | /* | |
148 | * don't serve cached data, if the toc isn't valid | |
149 | */ | |
150 | if ((info->cd_flags & IDE_CD_FLAG_TOC_VALID) == 0) | |
151 | return -EINVAL; | |
152 | ||
153 | /* Check validity of requested track number. */ | |
154 | ntracks = toc->hdr.last_track - toc->hdr.first_track + 1; | |
155 | ||
156 | if (toc->hdr.first_track == CDROM_LEADOUT) | |
157 | ntracks = 0; | |
158 | ||
159 | if (track == CDROM_LEADOUT) | |
160 | *ent = &toc->ent[ntracks]; | |
161 | else if (track < toc->hdr.first_track || track > toc->hdr.last_track) | |
162 | return -EINVAL; | |
163 | else | |
164 | *ent = &toc->ent[track - toc->hdr.first_track]; | |
165 | ||
166 | return 0; | |
167 | } | |
168 | ||
169 | static int ide_cd_fake_play_trkind(ide_drive_t *drive, void *arg) | |
170 | { | |
171 | struct cdrom_ti *ti = arg; | |
172 | struct atapi_toc_entry *first_toc, *last_toc; | |
173 | unsigned long lba_start, lba_end; | |
174 | int stat; | |
175 | struct request rq; | |
176 | struct request_sense sense; | |
177 | ||
178 | stat = ide_cd_get_toc_entry(drive, ti->cdti_trk0, &first_toc); | |
179 | if (stat) | |
180 | return stat; | |
181 | ||
182 | stat = ide_cd_get_toc_entry(drive, ti->cdti_trk1, &last_toc); | |
183 | if (stat) | |
184 | return stat; | |
185 | ||
186 | if (ti->cdti_trk1 != CDROM_LEADOUT) | |
187 | ++last_toc; | |
188 | lba_start = first_toc->addr.lba; | |
189 | lba_end = last_toc->addr.lba; | |
190 | ||
191 | if (lba_end <= lba_start) | |
192 | return -EINVAL; | |
193 | ||
194 | ide_cd_init_rq(drive, &rq); | |
195 | ||
196 | rq.sense = &sense; | |
197 | rq.cmd[0] = GPCMD_PLAY_AUDIO_MSF; | |
198 | lba_to_msf(lba_start, &rq.cmd[3], &rq.cmd[4], &rq.cmd[5]); | |
199 | lba_to_msf(lba_end - 1, &rq.cmd[6], &rq.cmd[7], &rq.cmd[8]); | |
200 | ||
201 | return ide_cd_queue_pc(drive, &rq); | |
202 | } | |
203 | ||
204 | static int ide_cd_read_tochdr(ide_drive_t *drive, void *arg) | |
205 | { | |
206 | struct cdrom_info *cd = drive->driver_data; | |
207 | struct cdrom_tochdr *tochdr = arg; | |
208 | struct atapi_toc *toc; | |
209 | int stat; | |
210 | ||
211 | /* Make sure our saved TOC is valid. */ | |
212 | stat = ide_cd_read_toc(drive, NULL); | |
213 | if (stat) | |
214 | return stat; | |
215 | ||
216 | toc = cd->toc; | |
217 | tochdr->cdth_trk0 = toc->hdr.first_track; | |
218 | tochdr->cdth_trk1 = toc->hdr.last_track; | |
219 | ||
220 | return 0; | |
221 | } | |
222 | ||
223 | static int ide_cd_read_tocentry(ide_drive_t *drive, void *arg) | |
224 | { | |
225 | struct cdrom_tocentry *tocentry = arg; | |
226 | struct atapi_toc_entry *toce; | |
227 | int stat; | |
228 | ||
229 | stat = ide_cd_get_toc_entry(drive, tocentry->cdte_track, &toce); | |
230 | if (stat) | |
231 | return stat; | |
232 | ||
233 | tocentry->cdte_ctrl = toce->control; | |
234 | tocentry->cdte_adr = toce->adr; | |
235 | if (tocentry->cdte_format == CDROM_MSF) { | |
236 | lba_to_msf(toce->addr.lba, | |
237 | &tocentry->cdte_addr.msf.minute, | |
238 | &tocentry->cdte_addr.msf.second, | |
239 | &tocentry->cdte_addr.msf.frame); | |
240 | } else | |
241 | tocentry->cdte_addr.lba = toce->addr.lba; | |
242 | ||
243 | return 0; | |
244 | } | |
245 | ||
246 | int ide_cdrom_audio_ioctl(struct cdrom_device_info *cdi, | |
247 | unsigned int cmd, void *arg) | |
248 | { | |
249 | ide_drive_t *drive = cdi->handle; | |
250 | ||
251 | switch (cmd) { | |
252 | /* | |
253 | * emulate PLAY_AUDIO_TI command with PLAY_AUDIO_10, since | |
254 | * atapi doesn't support it | |
255 | */ | |
256 | case CDROMPLAYTRKIND: | |
257 | return ide_cd_fake_play_trkind(drive, arg); | |
258 | case CDROMREADTOCHDR: | |
259 | return ide_cd_read_tochdr(drive, arg); | |
260 | case CDROMREADTOCENTRY: | |
261 | return ide_cd_read_tocentry(drive, arg); | |
262 | default: | |
263 | return -EINVAL; | |
264 | } | |
265 | } |