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Diffstat (limited to 'i386/i386at/gpl/linux/scsi/sr_ioctl.c')
-rw-r--r--i386/i386at/gpl/linux/scsi/sr_ioctl.c489
1 files changed, 489 insertions, 0 deletions
diff --git a/i386/i386at/gpl/linux/scsi/sr_ioctl.c b/i386/i386at/gpl/linux/scsi/sr_ioctl.c
new file mode 100644
index 00000000..2313cf8c
--- /dev/null
+++ b/i386/i386at/gpl/linux/scsi/sr_ioctl.c
@@ -0,0 +1,489 @@
+#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/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 */
+/* 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:
+ 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) | 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;
+
+ 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) | 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:
+ /*
+ * 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 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;
+
+ /* 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 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);
+ }
+}
+
+/*
+ * 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:
+ */
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