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#include <linux/sched.h>
#include <linux/fs.h>
#include <asm/segment.h>
#include <linux/errno.h>
#include "../block/blk.h"
#include "scsi.h"
#include "hosts.h"
#include "sr.h"
#include "scsi_ioctl.h"
#include <linux/cdrom.h>
#define IOCTL_RETRIES 3
/* The CDROM is fairly slow, so we need a little extra time */
#define IOCTL_TIMEOUT 200
extern int scsi_ioctl (Scsi_Device *dev, int cmd, void *arg);
static void sr_ioctl_done(Scsi_Cmnd * SCpnt)
{
struct request * req;
req = &SCpnt->request;
req->dev = 0xfffe; /* 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);
scsi_do_cmd(SCpnt,
(void *) sr_cmd, buffer, buflength, sr_ioctl_done,
IOCTL_TIMEOUT, IOCTL_RETRIES);
if (SCpnt->request.dev != 0xfffe){
struct semaphore sem = MUTEX_LOCKED;
SCpnt->request.sem = &sem;
down(&sem);
/* Hmm.. Have to ask about this */
while (SCpnt->request.dev != 0xfffe) schedule();
};
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:
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.dev = -1; /* 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];
int 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;
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 CDROMPLAYTRKIND:
{
struct cdrom_ti ti;
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) | 0x02; /* MSF format */
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;
char * buffer;
verify_area (VERIFY_READ, (void *) arg, sizeof (struct cdrom_tocentry));
memcpy_fromfs (&tocentry, (void *) arg, sizeof (struct cdrom_tocentry));
sr_cmd[0] = SCMD_READ_TOC;
sr_cmd[1] = ((scsi_CDs[target].device->lun) << 5) | 0x02; /* MSF format */
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);
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];
tocentry.cdte_ctrl = buffer[5] & 0xf;
}
else
tocentry.cdte_addr.lba = (int) buffer[0];
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 CDROMEJECT:
if (scsi_CDs[target].device -> access_count == 1)
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 CDROMVOLCTRL:
{
char * buffer, * mask;
struct cdrom_volctrl volctrl;
verify_area (VERIFY_READ, (void *) arg, sizeof (struct cdrom_volctrl));
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 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 CDROMREADMODE2:
return -EINVAL;
case CDROMREADMODE1:
return -EINVAL;
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);
default:
return scsi_ioctl(scsi_CDs[target].device,cmd,(void *) arg);
}
}
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