Release 4.7 drivers/scsi/sr_ioctl.c
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/fs.h>
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/blkdev.h>
#include <linux/module.h>
#include <linux/blkpg.h>
#include <linux/cdrom.h>
#include <linux/delay.h>
#include <linux/slab.h>
#include <asm/io.h>
#include <asm/uaccess.h>
#include <scsi/scsi.h>
#include <scsi/scsi_dbg.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_eh.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_ioctl.h>
#include <scsi/scsi_cmnd.h>
#include "sr.h"
#if 0
#define DEBUG
#endif
/* The sr_is_xa() seems to trigger firmware bugs with some drives :-(
* It is off by default and can be turned on with this module parameter */
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;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
christoph hellwig | christoph hellwig | 71 | 44.65% | 1 | 25.00% |
pre-git | pre-git | 49 | 30.82% | 1 | 25.00% |
alan cox | alan cox | 37 | 23.27% | 1 | 25.00% |
al viro | al viro | 2 | 1.26% | 1 | 25.00% |
| Total | 159 | 100.00% | 4 | 100.00% |
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;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
christoph hellwig | christoph hellwig | 230 | 77.97% | 3 | 18.75% |
pre-git | pre-git | 31 | 10.51% | 8 | 50.00% |
james bottomley | james bottomley | 17 | 5.76% | 1 | 6.25% |
alan cox | alan cox | 8 | 2.71% | 1 | 6.25% |
linus torvalds | linus torvalds | 6 | 2.03% | 1 | 6.25% |
al viro | al viro | 3 | 1.02% | 2 | 12.50% |
| Total | 295 | 100.00% | 16 | 100.00% |
#define IOCTL_RETRIES 3
/* ATAPI drives don't have a SCMD_PLAYAUDIO_TI command. When these drives
are emulating a SCSI device via the idescsi module, they need to have
CDROMPLAYTRKIND commands translated into CDROMPLAYMSF commands for them */
static int sr_fake_playtrkind(struct cdrom_device_info *cdi, struct cdrom_ti *ti)
{
struct cdrom_tocentry trk0_te, trk1_te;
struct cdrom_tochdr tochdr;
struct packet_command cgc;
int ntracks, ret;
ret = sr_read_tochdr(cdi, &tochdr);
if (ret)
return ret;
ntracks = tochdr.cdth_trk1 - tochdr.cdth_trk0 + 1;
if (ti->cdti_trk1 == ntracks)
ti->cdti_trk1 = CDROM_LEADOUT;
else if (ti->cdti_trk1 != CDROM_LEADOUT)
ti->cdti_trk1 ++;
trk0_te.cdte_track = ti->cdti_trk0;
trk0_te.cdte_format = CDROM_MSF;
trk1_te.cdte_track = ti->cdti_trk1;
trk1_te.cdte_format = CDROM_MSF;
ret = sr_read_tocentry(cdi, &trk0_te);
if (ret)
return ret;
ret = sr_read_tocentry(cdi, &trk1_te);
if (ret)
return ret;
memset(&cgc, 0, sizeof(struct packet_command));
cgc.cmd[0] = GPCMD_PLAY_AUDIO_MSF;
cgc.cmd[3] = trk0_te.cdte_addr.msf.minute;
cgc.cmd[4] = trk0_te.cdte_addr.msf.second;
cgc.cmd[5] = trk0_te.cdte_addr.msf.frame;
cgc.cmd[6] = trk1_te.cdte_addr.msf.minute;
cgc.cmd[7] = trk1_te.cdte_addr.msf.second;
cgc.cmd[8] = trk1_te.cdte_addr.msf.frame;
cgc.data_direction = DMA_NONE;
cgc.timeout = IOCTL_TIMEOUT;
return sr_do_ioctl(cdi->handle, &cgc);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
christoph hellwig | christoph hellwig | 232 | 80.00% | 1 | 11.11% |
pre-git | pre-git | 41 | 14.14% | 4 | 44.44% |
alan cox | alan cox | 9 | 3.10% | 1 | 11.11% |
al viro | al viro | 4 | 1.38% | 1 | 11.11% |
james bottomley | james bottomley | 3 | 1.03% | 1 | 11.11% |
jens axboe | jens axboe | 1 | 0.34% | 1 | 11.11% |
| Total | 290 | 100.00% | 9 | 100.00% |
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;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
christoph hellwig | christoph hellwig | 89 | 63.57% | 2 | 22.22% |
alan cox | alan cox | 28 | 20.00% | 1 | 11.11% |
pre-git | pre-git | 18 | 12.86% | 4 | 44.44% |
al viro | al viro | 5 | 3.57% | 2 | 22.22% |
| Total | 140 | 100.00% | 9 | 100.00% |
/* 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 */
int sr_do_ioctl(Scsi_CD *cd, struct packet_command *cgc)
{
struct scsi_device *SDev;
struct scsi_sense_hdr sshdr;
int result, err = 0, retries = 0;
struct request_sense *sense = cgc->sense;
SDev = cd->device;
if (!sense) {
sense = kmalloc(SCSI_SENSE_BUFFERSIZE, GFP_KERNEL);
if (!sense) {
err = -ENOMEM;
goto out;
}
}
retry:
if (!scsi_block_when_processing_errors(SDev)) {
err = -ENODEV;
goto out;
}
memset(sense, 0, sizeof(*sense));
result = scsi_execute(SDev, cgc->cmd, cgc->data_direction,
cgc->buffer, cgc->buflen, (char *)sense,
cgc->timeout, IOCTL_RETRIES, 0, NULL);
scsi_normalize_sense((char *)sense, sizeof(*sense), &sshdr);
/* Minimal error checking. Ignore cases we know about, and report the rest. */
if (driver_byte(result) != 0) {
switch (sshdr.sense_key) {
case UNIT_ATTENTION:
SDev->changed = 1;
if (!cgc->quiet)
sr_printk(KERN_INFO, cd,
"disc change detected.\n");
if (retries++ < 10)
goto retry;
err = -ENOMEDIUM;
break;
case NOT_READY: /* This happens if there is no disc in drive */
if (sshdr.asc == 0x04 &&
sshdr.ascq == 0x01) {
/* sense: Logical unit is in process of becoming ready */
if (!cgc->quiet)
sr_printk(KERN_INFO, cd,
"CDROM not ready yet.\n");
if (retries++ < 10) {
/* sleep 2 sec and try again */
ssleep(2);
goto retry;
} else {
/* 20 secs are enough? */
err = -ENOMEDIUM;
break;
}
}
if (!cgc->quiet)
sr_printk(KERN_INFO, cd,
"CDROM not ready. Make sure there "
"is a disc in the drive.\n");
err = -ENOMEDIUM;
break;
case ILLEGAL_REQUEST:
err = -EIO;
if (sshdr.asc == 0x20 &&
sshdr.ascq == 0x00)
/* sense: Invalid command operation code */
err = -EDRIVE_CANT_DO_THIS;
break;
default:
err = -EIO;
}
}
/* Wake up a process waiting for device */
out:
if (!cgc->sense)
kfree(sense);
cgc->stat = err;
return err;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
christoph hellwig | christoph hellwig | 294 | 77.78% | 2 | 20.00% |
pre-git | pre-git | 50 | 13.23% | 3 | 30.00% |
alan cox | alan cox | 20 | 5.29% | 1 | 10.00% |
hannes reinecke | hannes reinecke | 10 | 2.65% | 1 | 10.00% |
fujita tomonori | fujita tomonori | 2 | 0.53% | 1 | 10.00% |
linus torvalds | linus torvalds | 1 | 0.26% | 1 | 10.00% |
al viro | al viro | 1 | 0.26% | 1 | 10.00% |
| Total | 378 | 100.00% | 10 | 100.00% |
/* ---------------------------------------------------------------------- */
/* interface to cdrom.c */
int sr_tray_move(struct cdrom_device_info *cdi, int pos)
{
Scsi_CD *cd = cdi->handle;
struct packet_command cgc;
memset(&cgc, 0, sizeof(struct packet_command));
cgc.cmd[0] = GPCMD_START_STOP_UNIT;
cgc.cmd[4] = (pos == 0) ? 0x03 /* close */ : 0x02 /* eject */ ;
cgc.data_direction = DMA_NONE;
cgc.timeout = IOCTL_TIMEOUT;
return sr_do_ioctl(cd, &cgc);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
pre-git | pre-git | 34 | 38.64% | 3 | 30.00% |
alan cox | alan cox | 27 | 30.68% | 1 | 10.00% |
christoph hellwig | christoph hellwig | 23 | 26.14% | 3 | 30.00% |
al viro | al viro | 4 | 4.55% | 3 | 30.00% |
| Total | 88 | 100.00% | 10 | 100.00% |
int sr_lock_door(struct cdrom_device_info *cdi, int lock)
{
Scsi_CD *cd = cdi->handle;
return scsi_set_medium_removal(cd->device, lock ?
SCSI_REMOVAL_PREVENT : SCSI_REMOVAL_ALLOW);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
christoph hellwig | christoph hellwig | 34 | 97.14% | 1 | 50.00% |
pre-git | pre-git | 1 | 2.86% | 1 | 50.00% |
| Total | 35 | 100.00% | 2 | 100.00% |
int sr_drive_status(struct cdrom_device_info *cdi, int slot)
{
struct scsi_cd *cd = cdi->handle;
struct scsi_sense_hdr sshdr;
struct media_event_desc med;
if (CDSL_CURRENT != slot) {
/* we have no changer support */
return -EINVAL;
}
if (!scsi_test_unit_ready(cd->device, SR_TIMEOUT, MAX_RETRIES, &sshdr))
return CDS_DISC_OK;
/* SK/ASC/ASCQ of 2/4/1 means "unit is becoming ready" */
if (scsi_sense_valid(&sshdr) && sshdr.sense_key == NOT_READY
&& sshdr.asc == 0x04 && sshdr.ascq == 0x01)
return CDS_DRIVE_NOT_READY;
if (!cdrom_get_media_event(cdi, &med)) {
if (med.media_present)
return CDS_DISC_OK;
else if (med.door_open)
return CDS_TRAY_OPEN;
else
return CDS_NO_DISC;
}
/*
* SK/ASC/ASCQ of 2/4/2 means "initialization required"
* Using CD_TRAY_OPEN results in an START_STOP_UNIT to close
* the tray, which resolves the initialization requirement.
*/
if (scsi_sense_valid(&sshdr) && sshdr.sense_key == NOT_READY
&& sshdr.asc == 0x04 && sshdr.ascq == 0x02)
return CDS_TRAY_OPEN;
/*
* 0x04 is format in progress .. but there must be a disc present!
*/
if (sshdr.sense_key == NOT_READY && sshdr.asc == 0x04)
return CDS_DISC_OK;
/*
* If not using Mt Fuji extended media tray reports,
* just return TRAY_OPEN since ATAPI doesn't provide
* any other way to detect this...
*/
if (scsi_sense_valid(&sshdr) &&
/* 0x3a is medium not present */
sshdr.asc == 0x3a)
return CDS_NO_DISC;
else
return CDS_TRAY_OPEN;
return CDS_DRIVE_NOT_READY;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
james bottomley | james bottomley | 99 | 48.77% | 1 | 16.67% |
christoph hellwig | christoph hellwig | 36 | 17.73% | 1 | 16.67% |
robert jennings | robert jennings | 30 | 14.78% | 1 | 16.67% |
peter jones | peter jones | 30 | 14.78% | 1 | 16.67% |
tejun heo | tejun heo | 6 | 2.96% | 1 | 16.67% |
pre-git | pre-git | 2 | 0.99% | 1 | 16.67% |
| Total | 203 | 100.00% | 6 | 100.00% |
int sr_disk_status(struct cdrom_device_info *cdi)
{
Scsi_CD *cd = cdi->handle;
struct cdrom_tochdr toc_h;
struct cdrom_tocentry toc_e;
int i, rc, have_datatracks = 0;
/* look for data tracks */
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_read_tocentry(cdi, &toc_e))
return CDS_NO_INFO;
if (toc_e.cdte_ctrl & CDROM_DATA_TRACK) {
have_datatracks = 1;
break;
}
}
if (!have_datatracks)
return CDS_AUDIO;
if (cd->xa_flag)
return CDS_XA_2_1;
else
return CDS_DATA_1;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
christoph hellwig | christoph hellwig | 107 | 75.35% | 2 | 20.00% |
pre-git | pre-git | 14 | 9.86% | 4 | 40.00% |
alan cox | alan cox | 10 | 7.04% | 1 | 10.00% |
andrew morton | andrew morton | 6 | 4.23% | 1 | 10.00% |
james bottomley | james bottomley | 4 | 2.82% | 1 | 10.00% |
al viro | al viro | 1 | 0.70% | 1 | 10.00% |
| Total | 142 | 100.00% | 10 | 100.00% |
int sr_get_last_session(struct cdrom_device_info *cdi,
struct cdrom_multisession *ms_info)
{
Scsi_CD *cd = cdi->handle;
ms_info->addr.lba = cd->ms_offset;
ms_info->xa_flag = cd->xa_flag || cd->ms_offset > 0;
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
christoph hellwig | christoph hellwig | 41 | 82.00% | 1 | 16.67% |
pre-git | pre-git | 7 | 14.00% | 3 | 50.00% |
al viro | al viro | 1 | 2.00% | 1 | 16.67% |
alan cox | alan cox | 1 | 2.00% | 1 | 16.67% |
| Total | 50 | 100.00% | 6 | 100.00% |
int sr_get_mcn(struct cdrom_device_info *cdi, struct cdrom_mcn *mcn)
{
Scsi_CD *cd = cdi->handle;
struct packet_command cgc;
char *buffer = kmalloc(32, GFP_KERNEL | SR_GFP_DMA(cd));
int result;
if (!buffer)
return -ENOMEM;
memset(&cgc, 0, sizeof(struct packet_command));
cgc.cmd[0] = GPCMD_READ_SUBCHANNEL;
cgc.cmd[2] = 0x40; /* I do want the subchannel info */
cgc.cmd[3] = 0x02; /* Give me medium catalog number info */
cgc.cmd[8] = 24;
cgc.buffer = buffer;
cgc.buflen = 24;
cgc.data_direction = DMA_FROM_DEVICE;
cgc.timeout = IOCTL_TIMEOUT;
result = sr_do_ioctl(cd, &cgc);
memcpy(mcn->medium_catalog_number, buffer + 9, 13);
mcn->medium_catalog_number[13] = 0;
kfree(buffer);
return result;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
christoph hellwig | christoph hellwig | 106 | 61.99% | 2 | 18.18% |
pre-git | pre-git | 34 | 19.88% | 7 | 63.64% |
alan cox | alan cox | 30 | 17.54% | 1 | 9.09% |
al viro | al viro | 1 | 0.58% | 1 | 9.09% |
| Total | 171 | 100.00% | 11 | 100.00% |
int sr_reset(struct cdrom_device_info *cdi)
{
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
christoph hellwig | christoph hellwig | 12 | 92.31% | 1 | 50.00% |
pre-git | pre-git | 1 | 7.69% | 1 | 50.00% |
| Total | 13 | 100.00% | 2 | 100.00% |
int sr_select_speed(struct cdrom_device_info *cdi, int speed)
{
Scsi_CD *cd = cdi->handle;
struct packet_command cgc;
if (speed == 0)
speed = 0xffff; /* set to max */
else
speed *= 177; /* Nx to kbyte/s */
memset(&cgc, 0, sizeof(struct packet_command));
cgc.cmd[0] = GPCMD_SET_SPEED; /* SET CD SPEED */
cgc.cmd[2] = (speed >> 8) & 0xff; /* MSB for speed (in kbytes/sec) */
cgc.cmd[3] = speed & 0xff; /* LSB */
cgc.data_direction = DMA_NONE;
cgc.timeout = IOCTL_TIMEOUT;
if (sr_do_ioctl(cd, &cgc))
return -EIO;
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
christoph hellwig | christoph hellwig | 78 | 63.41% | 2 | 33.33% |
pre-git | pre-git | 26 | 21.14% | 2 | 33.33% |
alan cox | alan cox | 18 | 14.63% | 1 | 16.67% |
al viro | al viro | 1 | 0.81% | 1 | 16.67% |
| Total | 123 | 100.00% | 6 | 100.00% |
/* ----------------------------------------------------------------------- */
/* this is called by the generic cdrom driver. arg is a _kernel_ pointer, */
/* because the generic cdrom driver does the user access stuff for us. */
/* only cdromreadtochdr and cdromreadtocentry are left - for use with the */
/* sr_disk_status interface for the generic cdrom driver. */
int sr_audio_ioctl(struct cdrom_device_info *cdi, unsigned int cmd, void *arg)
{
switch (cmd) {
case CDROMREADTOCHDR:
return sr_read_tochdr(cdi, arg);
case CDROMREADTOCENTRY:
return sr_read_tocentry(cdi, arg);
case CDROMPLAYTRKIND:
return sr_play_trkind(cdi, arg);
default:
return -EINVAL;
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
christoph hellwig | christoph hellwig | 52 | 83.87% | 1 | 20.00% |
pre-git | pre-git | 8 | 12.90% | 3 | 60.00% |
james bottomley | james bottomley | 2 | 3.23% | 1 | 20.00% |
| Total | 62 | 100.00% | 5 | 100.00% |
/* -----------------------------------------------------------------------
* a function to read all sorts of funny cdrom sectors using the READ_CD
* scsi-3 mmc command
*
* lba: linear block address
* format: 0 = data (anything)
* 1 = audio
* 2 = data (mode 1)
* 3 = data (mode 2)
* 4 = data (mode 2 form1)
* 5 = data (mode 2 form2)
* blksize: 2048 | 2336 | 2340 | 2352
*/
static int sr_read_cd(Scsi_CD *cd, unsigned char *dest, int lba, int format, int blksize)
{
struct packet_command cgc;
#ifdef DEBUG
sr_printk(KERN_INFO, cd, "sr_read_cd lba=%d format=%d blksize=%d\n",
lba, format, blksize);
#endif
memset(&cgc, 0, sizeof(struct packet_command));
cgc.cmd[0] = GPCMD_READ_CD; /* READ_CD */
cgc.cmd[1] = ((format & 7) << 2);
cgc.cmd[2] = (unsigned char) (lba >> 24) & 0xff;
cgc.cmd[3] = (unsigned char) (lba >> 16) & 0xff;
cgc.cmd[4] = (unsigned char) (lba >> 8) & 0xff;
cgc.cmd[5] = (unsigned char) lba & 0xff;
cgc.cmd[8] = 1;
switch (blksize) {
case 2336:
cgc.cmd[9] = 0x58;
break;
case 2340:
cgc.cmd[9] = 0x78;
break;
case 2352:
cgc.cmd[9] = 0xf8;
break;
default:
cgc.cmd[9] = 0x10;
break;
}
cgc.buffer = dest;
cgc.buflen = blksize;
cgc.data_direction = DMA_FROM_DEVICE;
cgc.timeout = IOCTL_TIMEOUT;
return sr_do_ioctl(cd, &cgc);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
pre-git | pre-git | 191 | 73.75% | 8 | 57.14% |
alan cox | alan cox | 55 | 21.24% | 1 | 7.14% |
al viro | al viro | 8 | 3.09% | 3 | 21.43% |
hannes reinecke | hannes reinecke | 4 | 1.54% | 1 | 7.14% |
christoph hellwig | christoph hellwig | 1 | 0.39% | 1 | 7.14% |
| Total | 259 | 100.00% | 14 | 100.00% |
/*
* read sectors with blocksizes other than 2048
*/
static int sr_read_sector(Scsi_CD *cd, int lba, int blksize, unsigned char *dest)
{
struct packet_command cgc;
int rc;
/* we try the READ CD command first... */
if (cd->readcd_known) {
rc = sr_read_cd(cd, dest, lba, 0, blksize);
if (-EDRIVE_CANT_DO_THIS != rc)
return rc;
cd->readcd_known = 0;
sr_printk(KERN_INFO, cd,
"CDROM does'nt support READ CD (0xbe) command\n");
/* fall & retry the other way */
}
/* ... if this fails, we switch the blocksize using MODE SELECT */
if (blksize != cd->device->sector_size) {
if (0 != (rc = sr_set_blocklength(cd, blksize)))
return rc;
}
#ifdef DEBUG
sr_printk(KERN_INFO, cd, "sr_read_sector lba=%d blksize=%d\n",
lba, blksize);
#endif
memset(&cgc, 0, sizeof(struct packet_command));
cgc.cmd[0] = GPCMD_READ_10;
cgc.cmd[2] = (unsigned char) (lba >> 24) & 0xff;
cgc.cmd[3] = (unsigned char) (lba >> 16) & 0xff;
cgc.cmd[4] = (unsigned char) (lba >> 8) & 0xff;
cgc.cmd[5] = (unsigned char) lba & 0xff;
cgc.cmd[8] = 1;
cgc.buffer = dest;
cgc.buflen = blksize;
cgc.data_direction = DMA_FROM_DEVICE;
cgc.timeout = IOCTL_TIMEOUT;
rc = sr_do_ioctl(cd, &cgc);
return rc;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
pre-git | pre-git | 197 | 73.51% | 9 | 56.25% |
alan cox | alan cox | 45 | 16.79% | 1 | 6.25% |
al viro | al viro | 13 | 4.85% | 3 | 18.75% |
hannes reinecke | hannes reinecke | 9 | 3.36% | 1 | 6.25% |
christoph hellwig | christoph hellwig | 4 | 1.49% | 2 | 12.50% |
| Total | 268 | 100.00% | 16 | 100.00% |
/*
* read a sector in raw mode to check the sector format
* ret: 1 == mode2 (XA), 0 == mode1, <0 == error
*/
int sr_is_xa(Scsi_CD *cd)
{
unsigned char *raw_sector;
int is_xa;
if (!xa_test)
return 0;
raw_sector = kmalloc(2048, GFP_KERNEL | SR_GFP_DMA(cd));
if (!raw_sector)
return -ENOMEM;
if (0 == sr_read_sector(cd, cd->ms_offset + 16,
CD_FRAMESIZE_RAW1, raw_sector)) {
is_xa = (raw_sector[3] == 0x02) ? 1 : 0;
} else {
/* read a raw sector failed for some reason. */
is_xa = -1;
}
kfree(raw_sector);
#ifdef DEBUG
sr_printk(KERN_INFO, cd, "sr_is_xa: %d\n", is_xa);
#endif
return is_xa;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
pre-git | pre-git | 97 | 82.91% | 4 | 40.00% |
al viro | al viro | 6 | 5.13% | 2 | 20.00% |
james bottomley | james bottomley | 5 | 4.27% | 1 | 10.00% |
linus torvalds | linus torvalds | 4 | 3.42% | 1 | 10.00% |
hannes reinecke | hannes reinecke | 4 | 3.42% | 1 | 10.00% |
christoph hellwig | christoph hellwig | 1 | 0.85% | 1 | 10.00% |
| Total | 117 | 100.00% | 10 | 100.00% |
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
christoph hellwig | christoph hellwig | 1446 | 49.76% | 6 | 10.91% |
pre-git | pre-git | 850 | 29.25% | 23 | 41.82% |
alan cox | alan cox | 288 | 9.91% | 1 | 1.82% |
james bottomley | james bottomley | 134 | 4.61% | 4 | 7.27% |
al viro | al viro | 50 | 1.72% | 4 | 7.27% |
peter jones | peter jones | 30 | 1.03% | 1 | 1.82% |
robert jennings | robert jennings | 30 | 1.03% | 1 | 1.82% |
hannes reinecke | hannes reinecke | 27 | 0.93% | 1 | 1.82% |
jan dittmer | jan dittmer | 11 | 0.38% | 1 | 1.82% |
linus torvalds | linus torvalds | 11 | 0.38% | 3 | 5.45% |
tejun heo | tejun heo | 9 | 0.31% | 2 | 3.64% |
andrew morton | andrew morton | 6 | 0.21% | 1 | 1.82% |
richard henderson | richard henderson | 3 | 0.10% | 1 | 1.82% |
jeff garzik | jeff garzik | 3 | 0.10% | 1 | 1.82% |
paul gortmaker | paul gortmaker | 3 | 0.10% | 1 | 1.82% |
fujita tomonori | fujita tomonori | 2 | 0.07% | 1 | 1.82% |
arjan van de ven | arjan van de ven | 1 | 0.03% | 1 | 1.82% |
adrian bunk | adrian bunk | 1 | 0.03% | 1 | 1.82% |
jens axboe | jens axboe | 1 | 0.03% | 1 | 1.82% |
| Total | 2906 | 100.00% | 55 | 100.00% |
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