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b377fd3982
linux/drivers/scsi/sr_ioctl.c
Tim Schmielau cd354f1ae7 [PATCH] remove many unneeded #includes of sched.h 
After Al Viro (finally) succeeded in removing the sched.h #include in module.h
recently, it makes sense again to remove other superfluous sched.h includes.
There are quite a lot of files which include it but don't actually need
anything defined in there.  Presumably these includes were once needed for
macros that used to live in sched.h, but moved to other header files in the
course of cleaning it up.

To ease the pain, this time I did not fiddle with any header files and only
removed #includes from .c-files, which tend to cause less trouble.

Compile tested against 2.6.20-rc2 and 2.6.20-rc2-mm2 (with offsets) on alpha,
arm, i386, ia64, mips, powerpc, and x86_64 with allnoconfig, defconfig,
allmodconfig, and allyesconfig as well as a few randconfigs on x86_64 and all
configs in arch/arm/configs on arm.  I also checked that no new warnings were
introduced by the patch (actually, some warnings are removed that were emitted
by unnecessarily included header files).

Signed-off-by: Tim Schmielau <tim@physik3.uni-rostock.de>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-14 08:09:54 -08:00

564 lines
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#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/blkpg.h>
#include <linux/cdrom.h>
#include <linux/delay.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;
}
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
/* 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);
}
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 */
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);
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)
printk(KERN_INFO "%s: disc change detected.\n", cd->cdi.name);
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)
printk(KERN_INFO "%s: CDROM not ready yet.\n", cd->cdi.name);
if (retries++ < 10) {
/* sleep 2 sec and try again */
ssleep(2);
goto retry;
} else {
/* 20 secs are enough? */
err = -ENOMEDIUM;
break;
}
}
if (!cgc->quiet)
printk(KERN_INFO "%s: CDROM not ready. Make sure there is a disc in the drive.\n", cd->cdi.name);
#ifdef DEBUG
scsi_print_sense_hdr("sr", &sshdr);
#endif
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;
#ifdef DEBUG
__scsi_print_command(cgc->cmd);
scsi_print_sense_hdr("sr", &sshdr);
#endif
break;
default:
printk(KERN_ERR "%s: CDROM (ioctl) error, command: ", cd->cdi.name);
__scsi_print_command(cgc->cmd);
scsi_print_sense_hdr("sr", &sshdr);
err = -EIO;
}
}
/* Wake up a process waiting for device */
out:
if (!cgc->sense)
kfree(sense);
cgc->stat = err;
return err;
}
/* ---------------------------------------------------------------------- */
/* interface to cdrom.c */
static int test_unit_ready(Scsi_CD *cd)
{
struct packet_command cgc;
memset(&cgc, 0, sizeof(struct packet_command));
cgc.cmd[0] = GPCMD_TEST_UNIT_READY;
cgc.quiet = 1;
cgc.data_direction = DMA_NONE;
cgc.timeout = IOCTL_TIMEOUT;
return sr_do_ioctl(cd, &cgc);
}
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);
}
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);
}
int sr_drive_status(struct cdrom_device_info *cdi, int slot)
{
if (CDSL_CURRENT != slot) {
/* we have no changer support */
return -EINVAL;
}
if (0 == test_unit_ready(cdi->handle))
return CDS_DISC_OK;
return CDS_TRAY_OPEN;
}
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;
}
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;
}
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;
}
int sr_reset(struct cdrom_device_info *cdi)
{
return 0;
}
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;
}
/* ----------------------------------------------------------------------- */
/* 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;
}
}
/* -----------------------------------------------------------------------
* 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
printk("%s: sr_read_cd lba=%d format=%d blksize=%d\n",
cd->cdi.name, 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);
}
/*
* 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;
printk("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
printk("%s: sr_read_sector lba=%d blksize=%d\n", cd->cdi.name, 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;
}
/*
* 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
printk("%s: sr_is_xa: %d\n", cd->cdi.name, is_xa);
#endif
return is_xa;
}
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