#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/mm.h>
#include <linux/fs.h>
#include <asm/segment.h>
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/blk.h>
#include "scsi.h"
#include "hosts.h"
#include "sr.h"
#include <scsi/scsi_ioctl.h>
#include <linux/cdrom.h>
extern void get_sectorsize(int);
extern void sr_photocd(struct inode *);
#define IOCTL_RETRIES 3
/* The CDROM is fairly slow, so we need a little extra time */
/* In fact, it is very slow if it has to spin up first */
#define IOCTL_TIMEOUT 3000
static void sr_ioctl_done(Scsi_Cmnd * SCpnt)
{
struct request * req;
req = &SCpnt->request;
req->rq_status = RQ_SCSI_DONE; /* Busy, but indicate request done */
if (req->sem != NULL) {
up(req->sem);
}
}
/* 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 */
static int do_ioctl(int target, unsigned char * sr_cmd, void * buffer, unsigned buflength)
{
Scsi_Cmnd * SCpnt;
int result;
SCpnt = allocate_device(NULL, scsi_CDs[target].device, 1);
{
struct semaphore sem = MUTEX_LOCKED;
SCpnt->request.sem = &sem;
scsi_do_cmd(SCpnt,
(void *) sr_cmd, buffer, buflength, sr_ioctl_done,
IOCTL_TIMEOUT, IOCTL_RETRIES);
down(&sem);
}
result = SCpnt->result;
/* Minimal error checking. Ignore cases we know about, and report the rest. */
if(driver_byte(result) != 0)
switch(SCpnt->sense_buffer[2] & 0xf) {
case UNIT_ATTENTION:
scsi_CDs[target].device->changed = 1;
printk("Disc change detected.\n");
break;
case NOT_READY: /* This happens if there is no disc in drive */
printk("CDROM not ready. Make sure there is a disc in the drive.\n");
break;
case ILLEGAL_REQUEST:
/* CDROMCLOSETRAY should not print an error for caddy drives. */
if (!(sr_cmd[0] == START_STOP && sr_cmd[4] == 0x03))
printk("CDROM (ioctl) reports ILLEGAL REQUEST.\n");
break;
default:
printk("SCSI CD error: host %d id %d lun %d return code = %03x\n",
scsi_CDs[target].device->host->host_no,
scsi_CDs[target].device->id,
scsi_CDs[target].device->lun,
result);
printk("\tSense class %x, sense error %x, extended sense %x\n",
sense_class(SCpnt->sense_buffer[0]),
sense_error(SCpnt->sense_buffer[0]),
SCpnt->sense_buffer[2] & 0xf);
};
result = SCpnt->result;
SCpnt->request.rq_status = RQ_INACTIVE; /* Deallocate */
wake_up(&SCpnt->device->device_wait);
/* Wake up a process waiting for device*/
return result;
}
int sr_ioctl(struct inode * inode, struct file * file, unsigned int cmd, unsigned long arg)
{
u_char sr_cmd[10];
kdev_t dev = inode->i_rdev;
int result, target, err;
target = MINOR(dev);
if (target >= sr_template.nr_dev ||
!scsi_CDs[target].device) return -ENXIO;
switch (cmd)
{
/* Sun-compatible */
case CDROMPAUSE:
sr_cmd[0] = SCMD_PAUSE_RESUME;
sr_cmd[1] = scsi_CDs[target].device->lun << 5;
sr_cmd[2] = sr_cmd[3] = sr_cmd[4] = 0;
sr_cmd[5] = sr_cmd[6] = sr_cmd[7] = 0;
sr_cmd[8] = 0;
sr_cmd[9] = 0;
result = do_ioctl(target, sr_cmd, NULL, 255);
return result;
case CDROMRESUME:
sr_cmd[0] = SCMD_PAUSE_RESUME;
sr_cmd[1] = scsi_CDs[target].device->lun << 5;
sr_cmd[2] = sr_cmd[3] = sr_cmd[4] = 0;
sr_cmd[5] = sr_cmd[6] = sr_cmd[7] = 0;
sr_cmd[8] = 1;
sr_cmd[9] = 0;
result = do_ioctl(target, sr_cmd, NULL, 255);
return result;
case CDROMPLAYMSF:
{
struct cdrom_msf msf;
err = verify_area (VERIFY_READ, (void *) arg, sizeof (msf));
if (err) return err;
memcpy_fromfs(&msf, (void *) arg, sizeof(msf));
sr_cmd[0] = SCMD_PLAYAUDIO_MSF;
sr_cmd[1] = scsi_CDs[target].device->lun << 5;
sr_cmd[2] = 0;
sr_cmd[3] = msf.cdmsf_min0;
sr_cmd[4] = msf.cdmsf_sec0;
sr_cmd[5] = msf.cdmsf_frame0;
sr_cmd[6] = msf.cdmsf_min1;
sr_cmd[7] = msf.cdmsf_sec1;
sr_cmd[8] = msf.cdmsf_frame1;
sr_cmd[9] = 0;
result = do_ioctl(target, sr_cmd, NULL, 255);
return result;
}
case CDROMPLAYBLK:
{
struct cdrom_blk blk;
err = verify_area (VERIFY_READ, (void *) arg, sizeof (blk));
if (err) return err;
memcpy_fromfs(&blk, (void *) arg, sizeof(blk));
sr_cmd[0] = SCMD_PLAYAUDIO10;
sr_cmd[1] = scsi_CDs[target].device->lun << 5;
sr_cmd[2] = blk.from >> 24;
sr_cmd[3] = blk.from >> 16;
sr_cmd[4] = blk.from >> 8;
sr_cmd[5] = blk.from;
sr_cmd[6] = 0;
sr_cmd[7] = blk.len >> 8;
sr_cmd[8] = blk.len;
sr_cmd[9] = 0;
result = do_ioctl(target, sr_cmd, NULL, 255);
return result;
}
case CDROMPLAYTRKIND:
{
struct cdrom_ti ti;
err = verify_area (VERIFY_READ, (void *) arg, sizeof (ti));
if (err) return err;
memcpy_fromfs(&ti, (void *) arg, sizeof(ti));
sr_cmd[0] = SCMD_PLAYAUDIO_TI;
sr_cmd[1] = scsi_CDs[target].device->lun << 5;
sr_cmd[2] = 0;
sr_cmd[3] = 0;
sr_cmd[4] = ti.cdti_trk0;
sr_cmd[5] = ti.cdti_ind0;
sr_cmd[6] = 0;
sr_cmd[7] = ti.cdti_trk1;
sr_cmd[8] = ti.cdti_ind1;
sr_cmd[9] = 0;
result = do_ioctl(target, sr_cmd, NULL, 255);
return result;
}
case CDROMREADTOCHDR:
{
struct cdrom_tochdr tochdr;
char * buffer;
sr_cmd[0] = SCMD_READ_TOC;
sr_cmd[1] = ((scsi_CDs[target].device->lun) << 5);
sr_cmd[2] = sr_cmd[3] = sr_cmd[4] = sr_cmd[5] = 0;
sr_cmd[6] = 0;
sr_cmd[7] = 0; /* MSB of length (12) */
sr_cmd[8] = 12; /* LSB of length */
sr_cmd[9] = 0;
buffer = (unsigned char *) scsi_malloc(512);
if(!buffer) return -ENOMEM;
result = do_ioctl(target, sr_cmd, buffer, 12);
tochdr.cdth_trk0 = buffer[2];
tochdr.cdth_trk1 = buffer[3];
scsi_free(buffer, 512);
err = verify_area (VERIFY_WRITE, (void *) arg, sizeof (struct cdrom_tochdr));
if (err)
return err;
memcpy_tofs ((void *) arg, &tochdr, sizeof (struct cdrom_tochdr));
return result;
}
case CDROMREADTOCENTRY:
{
struct cdrom_tocentry tocentry;
unsigned char * buffer;
err = verify_area (VERIFY_READ, (void *) arg, sizeof (struct cdrom_tocentry));
if (err) return err;
memcpy_fromfs (&tocentry, (void *) arg, sizeof (struct cdrom_tocentry));
sr_cmd[0] = SCMD_READ_TOC;
sr_cmd[1] = ((scsi_CDs[target].device->lun) << 5) |
(tocentry.cdte_format == CDROM_MSF ? 0x02 : 0);
sr_cmd[2] = sr_cmd[3] = sr_cmd[4] = sr_cmd[5] = 0;
sr_cmd[6] = tocentry.cdte_track;
sr_cmd[7] = 0; /* MSB of length (12) */
sr_cmd[8] = 12; /* LSB of length */
sr_cmd[9] = 0;
buffer = (unsigned char *) scsi_malloc(512);
if(!buffer) return -ENOMEM;
result = do_ioctl (target, sr_cmd, buffer, 12);
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];
scsi_free(buffer, 512);
err = verify_area (VERIFY_WRITE, (void *) arg, sizeof (struct cdrom_tocentry));
if (err)
return err;
memcpy_tofs ((void *) arg, &tocentry, sizeof (struct cdrom_tocentry));
return result;
}
case CDROMSTOP:
sr_cmd[0] = START_STOP;
sr_cmd[1] = ((scsi_CDs[target].device->lun) << 5) | 1;
sr_cmd[2] = sr_cmd[3] = sr_cmd[5] = 0;
sr_cmd[4] = 0;
result = do_ioctl(target, sr_cmd, NULL, 255);
return result;
case CDROMSTART:
sr_cmd[0] = START_STOP;
sr_cmd[1] = ((scsi_CDs[target].device->lun) << 5) | 1;
sr_cmd[2] = sr_cmd[3] = sr_cmd[5] = 0;
sr_cmd[4] = 1;
result = do_ioctl(target, sr_cmd, NULL, 255);
return result;
case CDROMCLOSETRAY:
sr_cmd[0] = START_STOP;
sr_cmd[1] = ((scsi_CDs[target].device -> lun) << 5);
sr_cmd[2] = sr_cmd[3] = sr_cmd[5] = 0;
sr_cmd[4] = 0x03;
if ((result = do_ioctl(target, sr_cmd, NULL, 255)))
return result;
/* Gather information about newly inserted disc */
check_disk_change (inode->i_rdev);
sr_ioctl (inode, NULL, SCSI_IOCTL_DOORLOCK, 0);
sr_photocd (inode);
if (scsi_CDs[MINOR(inode->i_rdev)].needs_sector_size)
get_sectorsize (MINOR(inode->i_rdev));
return 0;
case CDROMEJECT:
/*
* Allow 0 for access count for auto-eject feature.
*/
if (scsi_CDs[target].device -> access_count > 1)
return -EBUSY;
sr_ioctl (inode, NULL, SCSI_IOCTL_DOORUNLOCK, 0);
sr_cmd[0] = START_STOP;
sr_cmd[1] = ((scsi_CDs[target].device -> lun) << 5) | 1;
sr_cmd[2] = sr_cmd[3] = sr_cmd[5] = 0;
sr_cmd[4] = 0x02;
if (!(result = do_ioctl(target, sr_cmd, NULL, 255)))
scsi_CDs[target].device -> changed = 1;
return result;
case CDROMEJECT_SW:
scsi_CDs[target].auto_eject = !!arg;
return 0;
case CDROMVOLCTRL:
{
char * buffer, * mask;
struct cdrom_volctrl volctrl;
err = verify_area (VERIFY_READ, (void *) arg, sizeof (struct cdrom_volctrl));
if (err) return err;
memcpy_fromfs (&volctrl, (void *) arg, sizeof (struct cdrom_volctrl));
/* First we get the current params so we can just twiddle the volume */
sr_cmd[0] = MODE_SENSE;
sr_cmd[1] = (scsi_CDs[target].device -> lun) << 5;
sr_cmd[2] = 0xe; /* Want mode page 0xe, CDROM audio params */
sr_cmd[3] = 0;
sr_cmd[4] = 28;
sr_cmd[5] = 0;
buffer = (unsigned char *) scsi_malloc(512);
if(!buffer) return -ENOMEM;
if ((result = do_ioctl (target, sr_cmd, buffer, 28))) {
printk ("Hosed while obtaining audio mode page\n");
scsi_free(buffer, 512);
return result;
}
sr_cmd[0] = MODE_SENSE;
sr_cmd[1] = (scsi_CDs[target].device -> lun) << 5;
sr_cmd[2] = 0x4e; /* Want the mask for mode page 0xe */
sr_cmd[3] = 0;
sr_cmd[4] = 28;
sr_cmd[5] = 0;
mask = (unsigned char *) scsi_malloc(512);
if(!mask) {
scsi_free(buffer, 512);
return -ENOMEM;
};
if ((result = do_ioctl (target, sr_cmd, mask, 28))) {
printk ("Hosed while obtaining mask for audio mode page\n");
scsi_free(buffer, 512);
scsi_free(mask, 512);
return result;
}
/* Now mask and substitute our own volume and reuse the rest */
buffer[0] = 0; /* Clear reserved field */
buffer[21] = volctrl.channel0 & mask[21];
buffer[23] = volctrl.channel1 & mask[23];
buffer[25] = volctrl.channel2 & mask[25];
buffer[27] = volctrl.channel3 & mask[27];
sr_cmd[0] = MODE_SELECT;
sr_cmd[1] = ((scsi_CDs[target].device -> lun) << 5) | 0x10; /* Params are SCSI-2 */
sr_cmd[2] = sr_cmd[3] = 0;
sr_cmd[4] = 28;
sr_cmd[5] = 0;
result = do_ioctl (target, sr_cmd, buffer, 28);
scsi_free(buffer, 512);
scsi_free(mask, 512);
return result;
}
case CDROMVOLREAD:
{
char * buffer;
struct cdrom_volctrl volctrl;
err = verify_area (VERIFY_WRITE, (void *) arg, sizeof (struct cdrom_volctrl));
if (err) return err;
/* Get the current params */
sr_cmd[0] = MODE_SENSE;
sr_cmd[1] = (scsi_CDs[target].device -> lun) << 5;
sr_cmd[2] = 0xe; /* Want mode page 0xe, CDROM audio params */
sr_cmd[3] = 0;
sr_cmd[4] = 28;
sr_cmd[5] = 0;
buffer = (unsigned char *) scsi_malloc(512);
if(!buffer) return -ENOMEM;
if ((result = do_ioctl (target, sr_cmd, buffer, 28))) {
printk ("(CDROMVOLREAD) Hosed while obtaining audio mode page\n");
scsi_free(buffer, 512);
return result;
}
volctrl.channel0 = buffer[21];
volctrl.channel1 = buffer[23];
volctrl.channel2 = buffer[25];
volctrl.channel3 = buffer[27];
memcpy_tofs ((void *) arg, &volctrl, sizeof (struct cdrom_volctrl));
scsi_free(buffer, 512);
return 0;
}
case CDROMSUBCHNL:
{
struct cdrom_subchnl subchnl;
char * buffer;
sr_cmd[0] = SCMD_READ_SUBCHANNEL;
sr_cmd[1] = ((scsi_CDs[target].device->lun) << 5) | 0x02; /* MSF format */
sr_cmd[2] = 0x40; /* I do want the subchannel info */
sr_cmd[3] = 0x01; /* Give me current position info */
sr_cmd[4] = sr_cmd[5] = 0;
sr_cmd[6] = 0;
sr_cmd[7] = 0;
sr_cmd[8] = 16;
sr_cmd[9] = 0;
buffer = (unsigned char*) scsi_malloc(512);
if(!buffer) return -ENOMEM;
result = do_ioctl(target, sr_cmd, buffer, 16);
subchnl.cdsc_audiostatus = buffer[1];
subchnl.cdsc_format = CDROM_MSF;
subchnl.cdsc_ctrl = buffer[5] & 0xf;
subchnl.cdsc_trk = buffer[6];
subchnl.cdsc_ind = buffer[7];
subchnl.cdsc_reladdr.msf.minute = buffer[13];
subchnl.cdsc_reladdr.msf.second = buffer[14];
subchnl.cdsc_reladdr.msf.frame = buffer[15];
subchnl.cdsc_absaddr.msf.minute = buffer[9];
subchnl.cdsc_absaddr.msf.second = buffer[10];
subchnl.cdsc_absaddr.msf.frame = buffer[11];
scsi_free(buffer, 512);
err = verify_area (VERIFY_WRITE, (void *) arg, sizeof (struct cdrom_subchnl));
if (err)
return err;
memcpy_tofs ((void *) arg, &subchnl, sizeof (struct cdrom_subchnl));
return result;
}
case CDROM_GET_UPC:
{
struct cdrom_mcn mcn;
char * buffer;
sr_cmd[0] = SCMD_READ_SUBCHANNEL;
sr_cmd[1] = ((scsi_CDs[target].device->lun) << 5);
sr_cmd[2] = 0x40; /* I do want the subchannel info */
sr_cmd[3] = 0x02; /* Give me medium catalog number info */
sr_cmd[4] = sr_cmd[5] = 0;
sr_cmd[6] = 0;
sr_cmd[7] = 0;
sr_cmd[8] = 24;
sr_cmd[9] = 0;
buffer = (unsigned char*) scsi_malloc(512);
if(!buffer) return -ENOMEM;
result = do_ioctl(target, sr_cmd, buffer, 24);
memcpy (mcn.medium_catalog_number, buffer + 9, 13);
mcn.medium_catalog_number[13] = 0;
scsi_free(buffer, 512);
err = verify_area (VERIFY_WRITE, (void *) arg, sizeof (struct cdrom_mcn));
if (err)
return err;
memcpy_tofs ((void *) arg, &mcn, sizeof (struct cdrom_mcn));
return result;
}
case CDROMREADMODE2:
return -EINVAL;
case CDROMREADMODE1:
return -EINVAL;
/* block-copy from ../block/sbpcd.c with some adjustments... */
case CDROMMULTISESSION: /* tell start-of-last-session to user */
{
struct cdrom_multisession ms_info;
long lba;
err = verify_area(VERIFY_READ, (void *) arg,
sizeof(struct cdrom_multisession));
if (err) return (err);
memcpy_fromfs(&ms_info, (void *) arg, sizeof(struct cdrom_multisession));
if (ms_info.addr_format==CDROM_MSF) { /* MSF-bin requested */
lba = scsi_CDs[target].mpcd_sector+CD_BLOCK_OFFSET;
ms_info.addr.msf.minute = lba / (CD_SECS*CD_FRAMES);
lba %= CD_SECS*CD_FRAMES;
ms_info.addr.msf.second = lba / CD_FRAMES;
ms_info.addr.msf.frame = lba % CD_FRAMES;
} else if (ms_info.addr_format==CDROM_LBA) /* lba requested */
ms_info.addr.lba=scsi_CDs[target].mpcd_sector;
else return (-EINVAL);
ms_info.xa_flag=scsi_CDs[target].xa_flags & 0x01;
err=verify_area(VERIFY_WRITE,(void *) arg,
sizeof(struct cdrom_multisession));
if (err) return (err);
memcpy_tofs((void *) arg, &ms_info, sizeof(struct cdrom_multisession));
return (0);
}
case BLKRAGET:
if (!arg)
return -EINVAL;
err = verify_area(VERIFY_WRITE, (int *) arg, sizeof(int));
if (err)
return err;
put_user(read_ahead[MAJOR(inode->i_rdev)], (int *) arg);
return 0;
case BLKRASET:
if(!suser())
return -EACCES;
if(!(inode->i_rdev))
return -EINVAL;
if(arg > 0xff)
return -EINVAL;
read_ahead[MAJOR(inode->i_rdev)] = arg;
return 0;
RO_IOCTLS(dev,arg);
case CDROMRESET:
invalidate_buffers(inode->i_rdev);
return 0;
default:
return scsi_ioctl(scsi_CDs[target].device,cmd,(void *) arg);
}
}
/*
* Overrides for Emacs so that we follow Linus's tabbing style.
* Emacs will notice this stuff at the end of the file and automatically
* adjust the settings for this buffer only. This must remain at the end
* of the file.
* ---------------------------------------------------------------------------
* Local variables:
* c-indent-level: 4
* c-brace-imaginary-offset: 0
* c-brace-offset: -4
* c-argdecl-indent: 4
* c-label-offset: -4
* c-continued-statement-offset: 4
* c-continued-brace-offset: 0
* indent-tabs-mode: nil
* tab-width: 8
* End:
*/
