patch-2.0.30 linux/drivers/cdrom/cdu31a.c

• Lines: 277
• Date: Tue Apr 8 08:47:45 1997
• Orig file: v2.0.29/linux/drivers/cdrom/cdu31a.c
• Orig date: Wed Dec 11 06:05:36 1996

diff -u --recursive --new-file v2.0.29/linux/drivers/cdrom/cdu31a.c linux/drivers/cdrom/cdu31a.c
@@ -1,25 +1,25 @@
 /*
-* Sony CDU-31A CDROM interface device driver.
-*
-* Corey Minyard (minyard@wf-rch.cirr.com)
-*
-* Colossians 3:17
-*
-* The Sony interface device driver handles Sony interface CDROM
-* drives and provides a complete block-level interface as well as an
-* ioctl() interface compatible with the Sun (as specified in
-* include/linux/cdrom.h).  With this interface, CDROMs can be
-* accessed and standard audio CDs can be played back normally.
-*
-* WARNING - 	All autoprobes have been removed from the driver.
-*		You MUST configure the CDU31A via a LILO config
-*		at boot time or in lilo.conf.  I have the
-*		following in my lilo.conf:
-*
-*                append="cdu31a=0x1f88,0,PAS"
-*
-*		The first number is the I/O base address of the
-*		card.  The second is the interrupt (0 means none).
+ * Sony CDU-31A CDROM interface device driver.
+ *
+ * Corey Minyard (minyard@wf-rch.cirr.com)
+ *
+ * Colossians 3:17
+ *
+ * The Sony interface device driver handles Sony interface CDROM
+ * drives and provides a complete block-level interface as well as an
+ * ioctl() interface compatible with the Sun (as specified in
+ * include/linux/cdrom.h).  With this interface, CDROMs can be
+ * accessed and standard audio CDs can be played back normally.
+ *
+ * WARNING - 	All autoprobes have been removed from the driver.
+ *		You MUST configure the CDU31A via a LILO config
+ *		at boot time or in lilo.conf.  I have the
+ *		following in my lilo.conf:
+ *
+ *                append="cdu31a=0x1f88,0,PAS"
+ *
+ *		The first number is the I/O base address of the
+ *		card.  The second is the interrupt (0 means none).
  *		The third should be "PAS" if on a Pro-Audio
  *		spectrum, or nothing if on something else.
  *
@@ -171,6 +171,8 @@
  *             still here, if the eject button is pushed while the
  *             drive light is flashing, the drive will return a bad
  *             status and be reset.  It recovers, though.
+ *
+ *  03/07/97 - Fixed a problem with timers.
  */
 
 #include <linux/major.h>
@@ -931,6 +933,9 @@
    volatile int val;
 
 
+#if DEBUG
+   printk("Entering handle_sony_cd_attention\n");
+#endif
    if (is_attention())
    {
       if (num_consecutive_attentions > CDU31A_MAX_CONSECUTIVE_ATTENTIONS)
@@ -938,6 +943,9 @@
          printk("cdu31a: Too many consecutive attentions: %d\n",
                 num_consecutive_attentions);
          num_consecutive_attentions = 0;
+#if DEBUG
+         printk("Leaving handle_sony_cd_attention at %d\n", __LINE__);
+#endif
          return(0);
       }
 
@@ -980,6 +988,9 @@
       }
 
       num_consecutive_attentions++;
+#if DEBUG
+      printk("Leaving handle_sony_cd_attention at %d\n", __LINE__);
+#endif
       return(1);
    }
    else if (abort_read_started)
@@ -996,10 +1007,16 @@
          val = read_data_register();
       }
       abort_read_started = 0;
+#if DEBUG
+      printk("Leaving handle_sony_cd_attention at %d\n", __LINE__);
+#endif
       return(1);
    }
 
    num_consecutive_attentions = 0;
+#if DEBUG
+   printk("Leaving handle_sony_cd_attention at %d\n", __LINE__);
+#endif
    return(0);
 }
 
@@ -1088,6 +1105,9 @@
    unsigned int retry_count;
 
 
+#if DEBUG
+   printk("Entering start_request\n");
+#endif
    log_to_msf(sector, params);
    /* If requested, read exactly what was asked. */
    if (read_nsect_only)
@@ -1128,6 +1148,9 @@
    if (is_busy())
    {
       printk("CDU31A: Timeout while waiting to issue command\n");
+#if DEBUG
+      printk("Leaving start_request at %d\n", __LINE__);
+#endif
       return(1);
    }
    else
@@ -1143,8 +1166,14 @@
       sony_next_block = sector * 4;
       readahead_dataleft = 0;
       readahead_bad = 0;
+#if DEBUG
+      printk("Leaving start_request at %d\n", __LINE__);
+#endif
       return(0);
    }
+#if DEBUG
+   printk("Leaving start_request at %d\n", __LINE__);
+#endif
 }
 
 /* Abort a pending read operation.  Clear all the drive status and
@@ -1186,6 +1215,13 @@
 static void
 handle_abort_timeout(unsigned long data)
 {
+   unsigned long flags;
+
+#if DEBUG
+   printk("Entering handle_abort_timeout\n");
+#endif
+   save_flags(flags);
+   cli();
    /* If it is in use, ignore it. */
    if (!sony_inuse)
    {
@@ -1202,6 +1238,10 @@
       readahead_bad = 0;
       abort_read_started = 1;
    }
+   restore_flags(flags);
+#if DEBUG
+   printk("Leaving handle_abort_timeout\n");
+#endif
 }
 
 /* Actually get data and status from the drive. */
@@ -1216,6 +1256,9 @@
    volatile unsigned char val;
 
 
+#if DEBUG
+   printk("Entering input_data\n");
+#endif
    /* If an XA disk on a CDU31A, skip the first 12 bytes of data from
       the disk.  The real data is after that. */
    if (sony_xa_mode)
@@ -1264,6 +1307,9 @@
          val = read_data_register();
       }
    }
+#if DEBUG
+   printk("Leaving input_data at %d\n", __LINE__);
+#endif
 }
 
 /* read data from the drive.  Note the nsect must be <= 4. */
@@ -1280,6 +1326,10 @@
    unsigned int skip;
 
 
+#if DEBUG
+   printk("Entering read_data_block\n");
+#endif
+
    res_reg[0] = 0;
    res_reg[1] = 0;
    *res_size = 0;
@@ -1345,6 +1395,9 @@
          {
             get_result(res_reg, res_size);
          }
+#if DEBUG
+         printk("Leaving read_data_block at %d\n", __LINE__);
+#endif
          return;
       }
    }
@@ -1464,6 +1517,9 @@
          }
       }
    }
+#if DEBUG
+   printk("Leaving read_data_block at %d\n", __LINE__);
+#endif
 }
 
 /*
@@ -1484,6 +1540,10 @@
    unsigned long flags;
 
 
+#if DEBUG
+         printk("Entering do_cdu31a_request\n");
+#endif
+
    /* 
     * Make sure no one else is using the driver; wait for them
     * to finish if it is so.
@@ -1501,6 +1561,9 @@
             end_request(0);
          }
          restore_flags(flags);
+#if DEBUG
+         printk("Leaving do_cdu31a_request at %d\n", __LINE__);
+#endif
          return;
       }
    }
@@ -1516,11 +1579,8 @@
 
    sti();
 
-   /* If the timer is running, cancel it. */
-   if (cdu31a_abort_timer.next != NULL)
-   {
-      del_timer(&cdu31a_abort_timer);
-   }
+   /* Make sure the timer is cancelled. */
+   del_timer(&cdu31a_abort_timer);
 
    while (1)
    {
@@ -1692,6 +1752,7 @@
    }
 
 end_do_cdu31a_request:
+   cli();
 #if 0
    /* After finished, cancel any pending operations. */
    abort_read();
@@ -1706,6 +1767,9 @@
    sony_inuse = 0;
    wake_up_interruptible(&sony_wait);
    restore_flags(flags);
+#if DEBUG
+   printk("Leaving do_cdu31a_request at %d\n", __LINE__);
+#endif
 }
 
 /* Copy overlapping buffers. */
@@ -3139,8 +3203,7 @@
       /* use 'mount -o block=2048' */
       blksize_size[MAJOR_NR] = &cdu31a_block_size;
       
-      cdu31a_abort_timer.next = NULL;
-      cdu31a_abort_timer.prev = NULL;
+      init_timer(&cdu31a_abort_timer);
       cdu31a_abort_timer.function = handle_abort_timeout;
    }