diff options
Diffstat (limited to 'drivers/scsi/sr_ioctl.c')
| -rw-r--r-- | drivers/scsi/sr_ioctl.c | 202 |
1 files changed, 111 insertions, 91 deletions
diff --git a/drivers/scsi/sr_ioctl.c b/drivers/scsi/sr_ioctl.c index 6e45ac3c43c5..5d02ff4db6cc 100644 --- a/drivers/scsi/sr_ioctl.c +++ b/drivers/scsi/sr_ioctl.c @@ -31,6 +31,79 @@ static int xa_test = 0; module_param(xa_test, int, S_IRUGO | S_IWUSR); +/* primitive to determine whether we need to have GFP_DMA set based on + * the status of the unchecked_isa_dma flag in the host structure */ +#define SR_GFP_DMA(cd) (((cd)->device->host->unchecked_isa_dma) ? GFP_DMA : 0) + + +static int sr_read_tochdr(struct cdrom_device_info *cdi, + struct cdrom_tochdr *tochdr) +{ + struct scsi_cd *cd = cdi->handle; + struct packet_command cgc; + int result; + unsigned char *buffer; + + buffer = kmalloc(32, GFP_KERNEL | SR_GFP_DMA(cd)); + if (!buffer) + return -ENOMEM; + + memset(&cgc, 0, sizeof(struct packet_command)); + cgc.timeout = IOCTL_TIMEOUT; + cgc.cmd[0] = GPCMD_READ_TOC_PMA_ATIP; + cgc.cmd[8] = 12; /* LSB of length */ + cgc.buffer = buffer; + cgc.buflen = 12; + cgc.quiet = 1; + cgc.data_direction = DMA_FROM_DEVICE; + + result = sr_do_ioctl(cd, &cgc); + + tochdr->cdth_trk0 = buffer[2]; + tochdr->cdth_trk1 = buffer[3]; + + kfree(buffer); + return result; +} + +static int sr_read_tocentry(struct cdrom_device_info *cdi, + struct cdrom_tocentry *tocentry) +{ + struct scsi_cd *cd = cdi->handle; + struct packet_command cgc; + int result; + unsigned char *buffer; + + buffer = kmalloc(32, GFP_KERNEL | SR_GFP_DMA(cd)); + if (!buffer) + return -ENOMEM; + + memset(&cgc, 0, sizeof(struct packet_command)); + cgc.timeout = IOCTL_TIMEOUT; + cgc.cmd[0] = GPCMD_READ_TOC_PMA_ATIP; + cgc.cmd[1] |= (tocentry->cdte_format == CDROM_MSF) ? 0x02 : 0; + cgc.cmd[6] = tocentry->cdte_track; + cgc.cmd[8] = 12; /* LSB of length */ + cgc.buffer = buffer; + cgc.buflen = 12; + cgc.data_direction = DMA_FROM_DEVICE; + + result = sr_do_ioctl(cd, &cgc); + + tocentry->cdte_ctrl = buffer[5] & 0xf; + tocentry->cdte_adr = buffer[5] >> 4; + tocentry->cdte_datamode = (tocentry->cdte_ctrl & 0x04) ? 1 : 0; + if (tocentry->cdte_format == CDROM_MSF) { + tocentry->cdte_addr.msf.minute = buffer[9]; + tocentry->cdte_addr.msf.second = buffer[10]; + tocentry->cdte_addr.msf.frame = buffer[11]; + } else + tocentry->cdte_addr.lba = (((((buffer[8] << 8) + buffer[9]) << 8) + + buffer[10]) << 8) + buffer[11]; + + kfree(buffer); + return result; +} #define IOCTL_RETRIES 3 @@ -45,7 +118,8 @@ static int sr_fake_playtrkind(struct cdrom_device_info *cdi, struct cdrom_ti *ti struct packet_command cgc; int ntracks, ret; - if ((ret = sr_audio_ioctl(cdi, CDROMREADTOCHDR, &tochdr))) + ret = sr_read_tochdr(cdi, &tochdr); + if (ret) return ret; ntracks = tochdr.cdth_trk1 - tochdr.cdth_trk0 + 1; @@ -60,9 +134,11 @@ static int sr_fake_playtrkind(struct cdrom_device_info *cdi, struct cdrom_ti *ti trk1_te.cdte_track = ti->cdti_trk1; trk1_te.cdte_format = CDROM_MSF; - if ((ret = sr_audio_ioctl(cdi, CDROMREADTOCENTRY, &trk0_te))) + ret = sr_read_tocentry(cdi, &trk0_te); + if (ret) return ret; - if ((ret = sr_audio_ioctl(cdi, CDROMREADTOCENTRY, &trk1_te))) + ret = sr_read_tocentry(cdi, &trk1_te); + if (ret) return ret; memset(&cgc, 0, sizeof(struct packet_command)); @@ -78,6 +154,30 @@ static int sr_fake_playtrkind(struct cdrom_device_info *cdi, struct cdrom_ti *ti return sr_do_ioctl(cdi->handle, &cgc); } +static int sr_play_trkind(struct cdrom_device_info *cdi, + struct cdrom_ti *ti) + +{ + struct scsi_cd *cd = cdi->handle; + struct packet_command cgc; + int result; + + memset(&cgc, 0, sizeof(struct packet_command)); + cgc.timeout = IOCTL_TIMEOUT; + cgc.cmd[0] = GPCMD_PLAYAUDIO_TI; + cgc.cmd[4] = ti->cdti_trk0; + cgc.cmd[5] = ti->cdti_ind0; + cgc.cmd[7] = ti->cdti_trk1; + cgc.cmd[8] = ti->cdti_ind1; + cgc.data_direction = DMA_NONE; + + result = sr_do_ioctl(cd, &cgc); + if (result == -EDRIVE_CANT_DO_THIS) + result = sr_fake_playtrkind(cdi, ti); + + return result; +} + /* We do our own retries because we want to know what the specific error code is. Normally the UNIT_ATTENTION code will automatically clear after one error */ @@ -229,13 +329,14 @@ int sr_disk_status(struct cdrom_device_info *cdi) int i, rc, have_datatracks = 0; /* look for data tracks */ - if (0 != (rc = sr_audio_ioctl(cdi, CDROMREADTOCHDR, &toc_h))) + rc = sr_read_tochdr(cdi, &toc_h); + if (rc) return (rc == -ENOMEDIUM) ? CDS_NO_DISC : CDS_NO_INFO; for (i = toc_h.cdth_trk0; i <= toc_h.cdth_trk1; i++) { toc_e.cdte_track = i; toc_e.cdte_format = CDROM_LBA; - if (sr_audio_ioctl(cdi, CDROMREADTOCENTRY, &toc_e)) + if (sr_read_tocentry(cdi, &toc_e)) return CDS_NO_INFO; if (toc_e.cdte_ctrl & CDROM_DATA_TRACK) { have_datatracks = 1; @@ -262,10 +363,6 @@ int sr_get_last_session(struct cdrom_device_info *cdi, return 0; } -/* primitive to determine whether we need to have GFP_DMA set based on - * the status of the unchecked_isa_dma flag in the host structure */ -#define SR_GFP_DMA(cd) (((cd)->device->host->unchecked_isa_dma) ? GFP_DMA : 0) - int sr_get_mcn(struct cdrom_device_info *cdi, struct cdrom_mcn *mcn) { Scsi_CD *cd = cdi->handle; @@ -329,93 +426,16 @@ int sr_select_speed(struct cdrom_device_info *cdi, int speed) int sr_audio_ioctl(struct cdrom_device_info *cdi, unsigned int cmd, void *arg) { - Scsi_CD *cd = cdi->handle; - struct packet_command cgc; - int result; - unsigned char *buffer = kmalloc(32, GFP_KERNEL | SR_GFP_DMA(cd)); - - if (!buffer) - return -ENOMEM; - - memset(&cgc, 0, sizeof(struct packet_command)); - cgc.timeout = IOCTL_TIMEOUT; - switch (cmd) { case CDROMREADTOCHDR: - { - struct cdrom_tochdr *tochdr = (struct cdrom_tochdr *) arg; - - cgc.cmd[0] = GPCMD_READ_TOC_PMA_ATIP; - cgc.cmd[8] = 12; /* LSB of length */ - cgc.buffer = buffer; - cgc.buflen = 12; - cgc.quiet = 1; - cgc.data_direction = DMA_FROM_DEVICE; - - result = sr_do_ioctl(cd, &cgc); - - tochdr->cdth_trk0 = buffer[2]; - tochdr->cdth_trk1 = buffer[3]; - - break; - } - + return sr_read_tochdr(cdi, arg); case CDROMREADTOCENTRY: - { - struct cdrom_tocentry *tocentry = (struct cdrom_tocentry *) arg; - - cgc.cmd[0] = GPCMD_READ_TOC_PMA_ATIP; - cgc.cmd[1] |= (tocentry->cdte_format == CDROM_MSF) ? 0x02 : 0; - cgc.cmd[6] = tocentry->cdte_track; - cgc.cmd[8] = 12; /* LSB of length */ - cgc.buffer = buffer; - cgc.buflen = 12; - cgc.data_direction = DMA_FROM_DEVICE; - - result = sr_do_ioctl(cd, &cgc); - - tocentry->cdte_ctrl = buffer[5] & 0xf; - tocentry->cdte_adr = buffer[5] >> 4; - tocentry->cdte_datamode = (tocentry->cdte_ctrl & 0x04) ? 1 : 0; - if (tocentry->cdte_format == CDROM_MSF) { - tocentry->cdte_addr.msf.minute = buffer[9]; - tocentry->cdte_addr.msf.second = buffer[10]; - tocentry->cdte_addr.msf.frame = buffer[11]; - } else - tocentry->cdte_addr.lba = (((((buffer[8] << 8) + buffer[9]) << 8) - + buffer[10]) << 8) + buffer[11]; - - break; - } - - case CDROMPLAYTRKIND: { - struct cdrom_ti* ti = (struct cdrom_ti*)arg; - - cgc.cmd[0] = GPCMD_PLAYAUDIO_TI; - cgc.cmd[4] = ti->cdti_trk0; - cgc.cmd[5] = ti->cdti_ind0; - cgc.cmd[7] = ti->cdti_trk1; - cgc.cmd[8] = ti->cdti_ind1; - cgc.data_direction = DMA_NONE; - - result = sr_do_ioctl(cd, &cgc); - if (result == -EDRIVE_CANT_DO_THIS) - result = sr_fake_playtrkind(cdi, ti); - - break; - } - + return sr_read_tocentry(cdi, arg); + case CDROMPLAYTRKIND: + return sr_play_trkind(cdi, arg); default: - result = -EINVAL; + return -EINVAL; } - -#if 0 - if (result) - printk("DEBUG: sr_audio: result for ioctl %x: %x\n", cmd, result); -#endif - - kfree(buffer); - return result; } /* ----------------------------------------------------------------------- |