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1995-10-10
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diff -ru --new-file linux-1.0/config.in linux/config.in
--- linux-1.0/config.in Sun Mar 13 00:17:37 1994
+++ linux/config.in Tue Mar 15 11:42:38 1994
@@ -88,6 +88,7 @@
bool 'Sony CDU31A CDROM driver support' CONFIG_CDU31A n
bool 'Mitsumi CDROM driver support' CONFIG_MCD n
bool 'Matsushita/Panasonic CDROM driver support' CONFIG_SBPCD n
+bool 'Sony CDU535 CDROM driver support' CONFIG_CDU535 y
*
* Filesystems
*
diff -ru --new-file linux-1.0/drivers/block/Makefile linux/drivers/block/Makefile
--- linux-1.0/drivers/block/Makefile Sun Mar 6 14:08:21 1994
+++ linux/drivers/block/Makefile Tue Mar 15 11:37:54 1994
@@ -49,6 +49,11 @@
SRCS := $(SRCS) xd.c
endif
+ifdef CONFIG_CDU535
+OBJS := $(OBJS) sonycd535.o
+SRCS := $(SRCS) sonycd535.c
+endif
+
all: block.a
block.a: $(OBJS)
diff -ru --new-file linux-1.0/drivers/block/blk.h linux/drivers/block/blk.h
--- linux-1.0/drivers/block/blk.h Sat Jan 29 12:55:06 1994
+++ linux/drivers/block/blk.h Tue Mar 15 11:37:54 1994
@@ -82,6 +82,7 @@
extern unsigned long hd_init(unsigned long mem_start, unsigned long mem_end);
extern unsigned long cdu31a_init(unsigned long mem_start, unsigned long mem_end);
extern unsigned long mcd_init(unsigned long mem_start, unsigned long mem_end);
+extern unsigned long init_sony535(unsigned long mem_start, unsigned long mem_end);
extern int is_read_only(int dev);
extern void set_device_ro(int dev,int flag);
@@ -160,6 +161,15 @@
#define DEVICE_NAME "CD-ROM"
#define DEVICE_INTR do_sr
#define DEVICE_REQUEST do_sr_request
+#define DEVICE_NR(device) (MINOR(device))
+#define DEVICE_ON(device)
+#define DEVICE_OFF(device)
+
+#elif (MAJOR_NR == CDU535_CDROM_MAJOR)
+/* Sony CD-ROM */
+#define DEVICE_NAME "SONY-CD535"
+#define DEVICE_INTR do_scd535
+#define DEVICE_REQUEST do_scd535_request
#define DEVICE_NR(device) (MINOR(device))
#define DEVICE_ON(device)
#define DEVICE_OFF(device)
diff -ru --new-file linux-1.0/drivers/block/ll_rw_blk.c linux/drivers/block/ll_rw_blk.c
--- linux-1.0/drivers/block/ll_rw_blk.c Tue Feb 1 07:03:51 1994
+++ linux/drivers/block/ll_rw_blk.c Tue Mar 15 11:37:54 1994
@@ -348,6 +348,9 @@
int correct_size;
struct blk_dev_struct * dev;
int i;
+#if defined(CONFIG_CDU535) && defined(CONFIG_CDU31A)
+ int sonycd_save_mem_start;
+#endif
/* Make sure that the first block contains something reasonable */
while (!*bh) {
@@ -488,9 +491,24 @@
#ifdef CONFIG_BLK_DEV_XD
mem_start = xd_init(mem_start,mem_end);
#endif
+#if defined(CONFIG_CDU535) && defined(CONFIG_CDU31A)
+ { /* since controllers for 535 and 31A can be at same location
+ * we have to be careful.
+ */
+ sonycd_save_mem_start = mem_start;
+ mem_start = cdu31a_init(mem_start,mem_end);
+ if ( mem_start == sonycd_save_mem_start ) { /* CDU31A not found */
+ mem_start = init_sony535(mem_start,mem_end);
+ }
+ }
+#else
#ifdef CONFIG_CDU31A
mem_start = cdu31a_init(mem_start,mem_end);
#endif
+#ifdef CONFIG_CDU535
+ mem_start = init_sony535(mem_start,mem_end);
+#endif
+#endif /* CONFIG_CDU31A && CONFIG_CDU535 */
#ifdef CONFIG_MCD
mem_start = mcd_init(mem_start,mem_end);
#endif
diff -ru --new-file linux-1.0/drivers/block/sonycd535.c linux/drivers/block/sonycd535.c
--- linux-1.0/drivers/block/sonycd535.c Thu Jan 1 00:00:00 1970
+++ linux/drivers/block/sonycd535.c Tue Mar 15 11:37:55 1994
@@ -0,0 +1,1537 @@
+/*
+ * Sony CDU-535 interface device driver
+ *
+ * This is a modified version of the CDU-31A device driver (see below).
+ * Changes were made using documentation for the CDU-531 (which Sony
+ * assures me is very similar to the 535) and partial disassembly of the
+ * DOS driver. I used Minyard's driver and replaced the the CDU-31A
+ * commands with the CDU-531 commands. This was complicated by a different
+ * interface protocol with the drive. The driver is still polled.
+ *
+ * Data transfer rate is about 110 Kb/sec, theoretical maximum is 150 Kb/sec.
+ * I tried polling without the sony_sleep during the data transfers but
+ * it did not speed things up any.
+ *
+ * 5/23/93 (rgj) changed the major number to 21 to get rid of conflict
+ * with CDU-31A driver. This is the also the number from the Linux
+ * Device Driver Registry for the Sony Drive. Hope nobody else is using it.
+ *
+ * 8/29/93 (rgj) remove the configuring of the interface board address
+ * from the top level configuration, you have to modify it in this file.
+ *
+ * Things to do:
+ * - handle errors and status better, put everything into a single word
+ * - use interrupts, DMA
+ *
+ * Known Bugs:
+ * -
+ *
+ * Ron Jeppesen (ronj.an@site007.saic.com)
+ *
+ *
+ *------------------------------------------------------------------------
+ * Sony CDROM interface device driver.
+ *
+ * Corey Minyard (minyard@wf-rch.cirr.com) (CDU-535 complaints to ronj above)
+ *
+ * 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.
+ *
+ * This interface is (unfortunatly) a polled interface. This is
+ * because most Sony interfaces are set up with DMA and interrupts
+ * disables. Some (like mine) do not even have the capability to
+ * handle interrupts or DMA. For this reason you will see a lot of
+ * the following:
+ *
+ * retry_count = jiffies+ SONY_JIFFIES_TIMEOUT;
+ * while ((retry_count > jiffies) && (! <some condition to wait for))
+ * {
+ * while (handle_sony_cd_attention())
+ * ;
+ *
+ * sony_sleep();
+ * }
+ * if (the condition not met)
+ * {
+ * return an error;
+ * }
+ *
+ * This ugly hack waits for something to happen, sleeping a little
+ * between every try. it also handles attentions, which are
+ * asyncronous events from the drive informing the driver that a disk
+ * has been inserted, removed, etc.
+ *
+ * One thing about these drives: They talk in MSF (Minute Second Frame) format.
+ * There are 75 frames a second, 60 seconds a minute, and up to 75 minutes on a
+ * disk. The funny thing is that these are sent to the drive in BCD, but the
+ * interface wants to see them in decimal. A lot of conversion goes on.
+ *
+ * Copyright (C) 1993 Corey Minyard
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+
+#include <linux/config.h>
+#ifdef CONFIG_CDU535
+
+#include <linux/errno.h>
+#include <linux/signal.h>
+#include <linux/sched.h>
+#include <linux/timer.h>
+#include <linux/fs.h>
+#include <linux/kernel.h>
+#include <linux/hdreg.h>
+#include <linux/genhd.h>
+
+#define REALLY_SLOW_IO
+#include <asm/system.h>
+#include <asm/io.h>
+#include <asm/segment.h>
+
+#include <linux/cdrom.h>
+#include <linux/sonycd535.h>
+
+#define MAJOR_NR CDU535_CDROM_MAJOR
+#include "blk.h"
+
+/*
+ * this is the base address of the interface card for the Sony CDU535
+ * CDROM drive. If your jumpers are set for an address other than
+ * this one (the default), change the following line to the
+ * proper address.
+ */
+#define CDU535_ADDRESS (0x340)
+
+#define DEBUG
+
+/*
+ * SONY535_BUFFER_SIZE determines the size of internal buffer used
+ * by the drive. It must be at least 2K and the larger the buffer
+ * the better the transfer rate. It does however take system memory.
+ * On my system I get the following transfer rates using dd to read
+ * 10 Mb off /dev/cdrom.
+ *
+ * 8K buffer 43 Kb/sec
+ * 16K buffer 66 Kb/sec
+ * 32K buffer 91 Kb/sec
+ * 64K buffer 111 Kb/sec
+ * 128K buffer 123 Kb/sec
+ * 512K buffer 123 Kb/sec
+ */
+#define SONY535_BUFFER_SIZE (64*1024)
+
+/*
+ * if LOCK_DOORS is defined then the eject button is disabled while
+ * the device is open.
+ */
+#define LOCK_DOORS
+
+static int read_subcode(void);
+static void sony_get_toc(void);
+static int scd_open( struct inode *inode, struct file *filp );
+static inline unsigned int int_to_bcd(unsigned int val);
+static unsigned int bcd_to_int(unsigned int bcd);
+static int do_sony_cmd( Byte *cmd, int nCmd, Byte status[2],
+ Byte *response, int nResponse, int ignoreStatusBit7 );
+
+/* The base I/O address of the Sony Interface. This is a variable (not a
+ #define) so it can be easily changed via some future ioctl() */
+static unsigned short sony_cd_base_io = CDU535_ADDRESS;
+
+/*
+ * The following are I/O addresses of the various registers for the drive. The
+ * comment for the base address also applies here.
+ */
+static unsigned short select_unit_reg;
+static unsigned short result_reg;
+static unsigned short command_reg;
+static unsigned short read_status_reg;
+static unsigned short data_reg;
+
+static int initialized = 0; /* Has the drive been initialized? */
+static int sony_disc_changed = 1; /* Has the disk been changed
+ since the last check? */
+static int sony_toc_read = 0; /* Has the table of contents been
+ read? */
+static unsigned int sony_buffer_size; /* Size in bytes of the read-ahead
+ buffer. */
+static unsigned int sony_buffer_sectors; /* Size (in 2048 byte records) of
+ the read-ahead buffer. */
+static unsigned int sony_usage = 0; /* How many processes have the
+ drive open. */
+
+static int sony_first_block = -1; /* First OS block (512 byte) in
+ the read-ahead buffer */
+static int sony_last_block = -1; /* Last OS block (512 byte) in
+ the read-ahead buffer */
+
+static struct s535_sony_toc *sony_toc; /* Points to the table of
+ contents. */
+static struct s535_sony_subcode *last_sony_subcode; /* Points to the last
+ subcode address read */
+static unsigned char *sony_buffer; /* Points to the read-ahead
+ buffer */
+static int sony_inuse = 0; /* is the drive in use? Only one
+ open at a time allowed */
+
+/*
+ * The audio status uses the values from read subchannel data as specified
+ * in include/linux/cdrom.h.
+ */
+static int sony_audio_status = CDROM_AUDIO_NO_STATUS;
+
+/*
+ * The following are a hack for pausing and resuming audio play. The drive
+ * does not work as I would expect it, if you stop it then start it again,
+ * the drive seeks back to the beginning and starts over. This holds the
+ * position during a pause so a resume can restart it. It uses the
+ * audio status variable above to tell if it is paused.
+ * I just kept the CDU-31A driver behavior rather than using the PAUSE
+ * command on the CDU-535.
+ */
+static unsigned char cur_pos_msf[3] = { 0, 0, 0 };
+static unsigned char final_pos_msf[3] = { 0, 0, 0 };
+
+
+/*
+ * This routine returns 1 if the disk has been changed since the last
+ * check or 0 if it hasn't. Setting flag to 0 resets the changed flag.
+ */
+int
+sony535_check_cdrom_media_change(int full_dev, int flag)
+{
+ int retval, target;
+
+ target = MINOR(full_dev);
+
+ if (target > 0) {
+ printk("Sony CD-ROM request error: invalid device.\n");
+ return 0;
+ }
+
+ /* if driver is not initialized, always return 0 */
+ retval = ( initialized ? sony_disc_changed : 0 );
+ if (!flag)
+ {
+ sony_disc_changed = 0;
+ }
+
+ return retval;
+}
+
+
+/*
+ * Wait a little while (used for polling the drive). If in initialization,
+ * setting a timeout doesn't work, so just loop for a while (we trust
+ * that the sony_sleep() call is protected by a test for proper jiffies count).
+ */
+static inline void
+sony_sleep(void)
+{
+ current->state = TASK_INTERRUPTIBLE;
+ current->timeout = jiffies;
+ schedule();
+}
+
+/*------------------start of SONY CDU535 very specific ---------------------*/
+
+/****************************************************************************
+ * void select_unit( int unit_no )
+ *
+ * Select the specified unit (0-3) so that subsequent commands reference it
+ ****************************************************************************/
+static void
+select_unit( int unit_no )
+{
+ unsigned int select_mask = ~(1 << unit_no);
+ outb( select_mask, select_unit_reg );
+} /* select_unit() */
+
+/***************************************************************************
+ * int read_result_reg( unsigned char *data_ptr )
+ *
+ * Read a result byte from the Sony CDU controller, store in location pointed
+ * to by data_ptr. Return zero on success, TIME_OUT if we did not receive
+ * data.
+ ***************************************************************************/
+static int
+read_result_reg( unsigned char *data_ptr )
+{
+ int retry_count;
+ int read_status;
+
+ retry_count = jiffies + SONY_JIFFIES_TIMEOUT;
+ while ( retry_count > jiffies )
+ {
+ if ( ((read_status=inb(read_status_reg)) & SONY535_RESULT_NOT_READY_BIT) == 0 )
+ {
+#if 0
+ printk("read_result_reg(): readStatReg = 0x%x\n", read_status );
+#endif
+ *data_ptr = inb(result_reg);
+ return( 0 );
+ }
+ else
+ {
+ sony_sleep();
+ }
+ }
+ printk(" Sony CDROM read_result_reg: TIME OUT!\n");
+ return( TIME_OUT );
+} /* read_result_reg() */
+
+/****************************************************************************
+ * int read_exec_status( Byte status[2] )
+ *
+ * Read the execution status of the last command and put into status.
+ * Handles reading second status word if available. Returns 0 on success,
+ * TIME_OUT on failure.
+ ****************************************************************************/
+static int
+read_exec_status( Byte status[2] )
+{
+ status[1] = 0;
+ if ( read_result_reg( &(status[0]) ) != 0 ) return( TIME_OUT );
+ if ( (status[0] & 0x80) != 0 ) /* byte two follows */
+ {
+ if ( read_result_reg( &(status[1]) ) != 0 ) return( TIME_OUT );
+ }
+#if 0
+ printk("read_exec_status: read 0x%x\n", status[0] );
+ if (status[0] & 0x80) printk(" and 0x%x\n", status[1] );
+ printk("\n");
+#endif
+ return( 0 );
+} /* read_exec_status() */
+
+/****************************************************************************
+ * int check_drive_status( void )
+ *
+ * Check the current drive status. Using this before executing a command
+ * takes care of the problem of unsolicited drive status-2 messages.
+ * Add a check of the audio status if we think the disk is playing.
+ ****************************************************************************/
+static int
+check_drive_status( void )
+{
+ Byte status, e_status[2];
+ int CDD, ATN;
+ unsigned char cmd;
+
+ select_unit(0);
+ if ( sony_audio_status == CDROM_AUDIO_PLAY ) /* check status */
+ {
+ outb( SONY535_REQUEST_AUDIO_STATUS, command_reg );
+ if ( read_result_reg( &status ) == 0 )
+ {
+ switch( status )
+ {
+ case 0x0: break; /* play in progress */
+ case 0x1: break; /* paused */
+ case 0x3: /* audio play completed */
+ case 0x5: /* play not requested */
+ sony_audio_status = CDROM_AUDIO_COMPLETED;
+ read_subcode();
+ break;
+ case 0x4: /* error during play */
+ sony_audio_status = CDROM_AUDIO_ERROR;
+ break;
+ }
+ }
+ }
+ /* now check drive status */
+ outb( SONY535_REQUEST_DRIVE_STATUS_2, command_reg );
+ if ( read_result_reg( &status ) != 0 )
+ return( TIME_OUT );
+
+#if 0
+ printk("--check_drive_status() got 0x%x\n", status );
+#endif
+
+ if ( status == 0 ) return( 0 );
+
+ ATN = status & 0xf;
+ CDD = (status >> 4) & 0xf;
+
+ switch ( ATN )
+ {
+ case 0x0:
+ break; /* go on to CDD stuff */
+ case SONY535_ATN_BUSY:
+ if ( initialized )
+ printk("Sony CDROM error, drive busy\n");
+ return( CD_BUSY);
+ case SONY535_ATN_EJECT_IN_PROGRESS:
+ printk("Sony CDROM error, eject in progress\n");
+ sony_audio_status = CDROM_AUDIO_INVALID;
+ return( CD_BUSY);
+ case SONY535_ATN_RESET_OCCURRED:
+ case SONY535_ATN_DISC_CHANGED:
+ case SONY535_ATN_RESET_AND_DISC_CHANGED:
+#ifdef DEBUG
+ printk("Sony CDROM, reset occurred or disc changed\n");
+#endif
+ sony_disc_changed = 1;
+ sony_toc_read = 0;
+ sony_audio_status = CDROM_AUDIO_NO_STATUS;
+ sony_first_block = -1;
+ sony_last_block = -1;
+ if (initialized)
+ {
+ cmd = SONY535_SPIN_UP;
+ do_sony_cmd( &cmd,1, e_status, NULL,0, 0 );
+ sony_get_toc();
+ }
+ return( 0 );
+ default:
+ printk("Sony CDROM error, drive busy (ATN=0x%x)\n", ATN );
+ return( CD_BUSY );
+ }
+ switch ( CDD )
+ { /* the 531 docs are not helpful in decoding this */
+ case 0x0: /* just use the values from the DOS driver */
+ case 0x2:
+ case 0xa:
+ break; /* no error */
+ case 0xc:
+ printk("check_drive_status(): CDD = 0xc! Not properly handled!\n");
+ return( CD_BUSY ); /* ? */
+ default:
+ return( CD_BUSY );
+ }
+ return( 0 );
+} /* check_drive_status() */
+
+/*****************************************************************************
+ * int do_sony_cmd( Byte *cmd, int n_cmd, Byte status[2],
+ * Byte *response, int n_response, int ignore_status_bit7 )
+ *
+ * Generic routine for executing commands. The command and its parameters
+ * should be placed in the cmd[] array, number of bytes in the command is
+ * stored in nCmd. The response from the command will be stored in the
+ * response array. The number of bytes you expect back (excluding status)
+ * should be passed in nReponse. Finally, some
+ * commands set bit 7 of the return status even when there is no second
+ * status byte, on these commands set ignoreStatusBit7 TRUE.
+ * If the command was sent and data recieved back, then we return 0,
+ * else we return TIME_OUT. You still have to check the status yourself.
+ * You should call check_drive_status() before calling this routine
+ * so that you do not lose notifications of disk changes, etc.
+ ****************************************************************************/
+static int
+do_sony_cmd( Byte *cmd, int n_cmd, Byte status[2],
+ Byte *response, int n_response, int ignore_status_bit7 )
+{
+ int i;
+
+ /* write out the command */
+ for ( i=0; i < n_cmd; i++ )
+ outb( cmd[i], command_reg );
+
+ /* read back the status */
+ if ( read_result_reg( status ) != 0 )
+ return( TIME_OUT );
+ if ( !ignore_status_bit7 && ((status[0] & 0x80) != 0) ) /* get second status byte */
+ {
+ if ( read_result_reg( status+1 ) != 0 )
+ return( TIME_OUT );
+ }
+ else
+ {
+ status[1] = 0;
+ }
+
+ /* do not know about when I should read set of data and when not to */
+ if ( (status[0] & ((ignore_status_bit7 ? 0x7f : 0xff) & 0x8f)) != 0 )
+ return( 0 );
+
+ /* else, read in rest of data */
+ for ( i=0; n_response > 0; n_response--, i++ )
+ if ( read_result_reg( response+i ) != 0 ) return(TIME_OUT);
+ return( 0 );
+} /* do_sony_cmd() */
+
+/**************************************************************************
+ * int set_drive_mode( int mode, Byte status[2] )
+ *
+ * Set the drive mode to the specified value (mode=0 is audio, mode=e0
+ * is mode-1 CDROM
+ **************************************************************************/
+static int
+set_drive_mode( int mode, Byte status[2] )
+{
+ Byte cmd_buff[2], ret_buff[1];
+
+ cmd_buff[0] = SONY535_SET_DRIVE_MODE;
+ cmd_buff[1] = mode;
+ return( do_sony_cmd( cmd_buff,2, status, ret_buff,1, 1 ) );
+} /* set_drive_mode() */
+
+/***************************************************************************
+ * int seek_and_read_N_blocks( Byte params[], int n_blocks, Byte status[2],
+ * Byte *data_buff, int buff_size )
+ *
+ * Read n_blocks of data from the CDROM starting at position params[0:2],
+ * number of blocks in stored in params[3:5] -- both these are already
+ * int bcd format.
+ * Transfer the data into the buffer pointed at by data_buff. buff_size
+ * gives the number of bytes available in the buffer.
+ * The routine returns number of bytes read in if successful, otherwise
+ * it returns one of the standard error returns.
+ ***************************************************************************/
+static int
+seek_and_read_N_blocks( Byte params[], int n_blocks, Byte status[2],
+ Byte *data_buff, int buf_size )
+{
+ int i;
+ const int block_size = 2048;
+ Byte cmd_buff[7];
+ int read_status;
+ Byte *start_pos = data_buff;
+ int retry_count;
+
+ if ( ((long)block_size)*n_blocks > buf_size )
+ return( NO_ROOM );
+
+ set_drive_mode( SONY535_CDROM_DRIVE_MODE, status );
+
+ /* send command to read the data */
+ cmd_buff[0] = SONY535_SEEK_AND_READ_N_BLOCKS_1;
+ for ( i=0; i < 6; i++ )
+ cmd_buff[i+1] = params[i];
+ for ( i=0; i < 7; i++ )
+ outb( cmd_buff[i], command_reg );
+
+ /* read back the data one block at a time */
+ while ( n_blocks-- > 0 )
+ {
+ /* wait for data to be ready */
+ retry_count = jiffies + SONY_JIFFIES_TIMEOUT;
+ while ( retry_count > jiffies )
+ {
+ read_status = inb(read_status_reg);
+ if ( (read_status & SONY535_RESULT_NOT_READY_BIT) == 0 )
+ {
+ read_exec_status( status );
+ return( BAD_STATUS );
+ }
+ if ( (read_status & SONY535_DATA_NOT_READY_BIT) == 0 )
+ {
+ /* data is ready, read it */
+ for ( i=0; i < block_size; i++ )
+ *data_buff++ = inb( data_reg ); /* unrolling this loop does not seem to help */
+ break; /* exit the timeout loop */
+ }
+ sony_sleep(); /* data not ready, sleep a while */
+ }
+ if ( retry_count <= jiffies )
+ return( TIME_OUT ); /* if we reach this stage */
+ }
+
+ /* read all the data, now read the status */
+ if ( (i=read_exec_status( status )) != 0 )
+ return( i );
+ return( data_buff - start_pos );
+} /* seek_and_read_N_blocks() */
+
+/****************************************************************************
+ * int request_toc_data( Byte status[2], struct s535_sony_toc *toc )
+ *
+ * Read in the table of contents data. Converts all the bcd data
+ * into integers in the toc structure.
+ ****************************************************************************/
+static int
+request_toc_data( Byte status[2], struct s535_sony_toc *toc )
+{
+ int to_status;
+ int i, j, n_tracks, track_no;
+ Byte cmd_no = 0xb2;
+ Byte track_address_buffer[5];
+ int first_track_num, last_track_num;
+
+ /* read the fixed portion of the table of contents */
+ if ((to_status=do_sony_cmd( &cmd_no,1, status, (Byte *)toc,15, 1 )) != 0 )
+ return( to_status );
+
+ /* convert the data into integers so we can use them */
+ first_track_num = bcd_to_int(toc->first_track_num);
+ last_track_num = bcd_to_int(toc->last_track_num);
+ n_tracks = last_track_num - first_track_num + 1;
+
+ /* read each of the track address descriptors */
+ for ( i=0; i < n_tracks; i++ )
+ {
+ /* read the descriptor into a temporary buffer */
+ for ( j=0; j < 5; j++ )
+ {
+ if ( read_result_reg( track_address_buffer+j ) != 0 )
+ return( TIME_OUT );
+ if ( j == 1 ) /* need to convert from bcd */
+ track_no = bcd_to_int(track_address_buffer[j]);
+ }
+ /* copy the descriptor to proper location - sonycd.c just fills */
+ memcpy( toc->tracks+i, track_address_buffer, 5 );
+ }
+ return( 0 );
+} /* request_toc_data() */
+
+/***************************************************************************
+ * int spin_up_drive( Byte status[2] )
+ *
+ * Spin up the drive (unless it is already spinning).
+ ***************************************************************************/
+static int
+spin_up_drive( Byte status[2] )
+{
+ Byte cmd_buff[1];
+
+ /* first see if the drive is already spinning */
+ cmd_buff[0] = SONY535_REQUEST_DRIVE_STATUS_1;
+ if ( do_sony_cmd( cmd_buff,1, status, NULL,0, 0 ) != 0 )
+ return(TIME_OUT );
+ if ( (status[0] & SONY535_STATUS1_NOT_SPINNING) == 0 )
+ return( 0 ); /* its already spinning */
+
+ /* else, give the spin-up command */
+ cmd_buff[0] = SONY535_SPIN_UP;
+ return( do_sony_cmd( cmd_buff, 1, status, NULL,0, 0 ) );
+} /* spin_up_drive() */
+
+/*--------------------end of SONY CDU535 very specific ---------------------*/
+
+/* Convert from an integer 0-99 to BCD */
+static inline unsigned int
+int_to_bcd(unsigned int val)
+{
+ int retval;
+
+
+ retval = (val / 10) << 4;
+ retval = retval | val % 10;
+ return(retval);
+}
+
+
+/* Convert from BCD to an integer from 0-99 */
+static unsigned int
+bcd_to_int(unsigned int bcd)
+{
+ return((((bcd >> 4) & 0x0f) * 10) + (bcd & 0x0f));
+}
+
+
+/*
+ * Convert a logical sector value (like the OS would want to use for
+ * a block device) to an MSF format.
+ */
+static void
+log_to_msf(unsigned int log, unsigned char *msf)
+{
+ log = log + LOG_START_OFFSET;
+ msf[0] = int_to_bcd(log / 4500);
+ log = log % 4500;
+ msf[1] = int_to_bcd(log / 75);
+ msf[2] = int_to_bcd(log % 75);
+}
+
+
+/*
+ * Convert an MSF format to a logical sector.
+ */
+static unsigned int
+msf_to_log(unsigned char *msf)
+{
+ unsigned int log;
+
+
+ log = bcd_to_int(msf[2]);
+ log += bcd_to_int(msf[1]) * 75;
+ log += bcd_to_int(msf[0]) * 4500;
+ log = log - LOG_START_OFFSET;
+
+ return log;
+}
+
+
+/*
+ * Take in integer size value and put it into a buffer like
+ * the drive would want to see a number-of-sector value.
+ */
+static void
+size_to_buf(unsigned int size,
+ unsigned char *buf)
+{
+ buf[0] = size / 65536;
+ size = size % 65536;
+ buf[1] = size / 256;
+ buf[2] = size % 256;
+}
+
+
+/*
+ * The OS calls this to perform a read or write operation to the drive.
+ * Write obviously fail. Reads to a read ahead of sony_buffer_size
+ * bytes to help speed operations. This especially helps since the OS
+ * uses 1024 byte blocks and the drive uses 2048 byte blocks. Since most
+ * data access on a CD is done sequentially, this saves a lot of operations.
+ */
+static void
+do_scd535_request(void)
+{
+ int block;
+ unsigned int dev;
+ int nsect;
+ unsigned char params[10];
+ int copyoff;
+ int spin_up_retry;
+ unsigned int read_size;
+ unsigned char status[2], cmd[2];
+
+
+ if ( !sony_inuse )
+ {
+ scd_open( NULL, NULL );
+ }
+
+ while (1)
+ {
+ /*
+ * The beginning here is stolen from the hard disk driver. I hope
+ * its right.
+ */
+ if (!(CURRENT) || CURRENT->dev < 0)
+ {
+ return;
+ }
+
+ INIT_REQUEST;
+ dev = MINOR(CURRENT->dev);
+ block = CURRENT->sector;
+ nsect = CURRENT->nr_sectors;
+ if (dev != 0)
+ {
+ end_request(0);
+ continue;
+ }
+
+ switch(CURRENT->cmd)
+ {
+ case READ:
+ /*
+ * If the block address is invalid or the request goes beyond the end of
+ * the media, return an error.
+ */
+ if ((block / 4) >= sony_toc->lead_out_start_lba)
+ {
+ end_request(0);
+ return;
+ }
+ if (((block + nsect) / 4) >= sony_toc->lead_out_start_lba)
+ {
+ end_request(0);
+ return;
+ }
+
+ while (nsect > 0)
+ {
+ /*
+ * If the requested sector is not currently in the read-ahead buffer,
+ * it must be read in.
+ */
+ if ((block < sony_first_block) || (block > sony_last_block))
+ {
+ sony_first_block = (block / 4) * 4;
+ log_to_msf(block/4, params);
+
+ /*
+ * If the full read-ahead would go beyond the end of the media, trim
+ * it back to read just till the end of the media.
+ */
+ if (((block / 4) + sony_buffer_sectors) >= sony_toc->lead_out_start_lba)
+ {
+ sony_last_block = (sony_toc->lead_out_start_lba * 4) - 1;
+ read_size = sony_toc->lead_out_start_lba - (block / 4);
+ }
+ else
+ {
+ sony_last_block = sony_first_block + (sony_buffer_sectors * 4) - 1;
+ read_size = sony_buffer_sectors;
+ }
+ size_to_buf(read_size, ¶ms[3]);
+
+ /*
+ * Read the data. If the drive was not spinning, spin it up and try
+ * once more. I know, the goto is ugly, but I am too lazy to fix it.
+ */
+ spin_up_retry = 0;
+try_read_again:
+#if 0
+ if ( check_drive_status() != 0 ) { /* drive not ready */
+ sony_first_block = -1;
+ sony_last_block = -1;
+ end_request(0);
+ return;
+ }
+#endif
+ if ( seek_and_read_N_blocks( params, read_size, status, sony_buffer,
+ (read_size * 2048) ) < 0 ) {
+ if ((status[0] & SONY535_STATUS1_NOT_SPINNING) && (!spin_up_retry))
+ {
+ printk(" Sony535 Debug -- calling spin up when reading data!\n");
+ cmd[0] = SONY535_SPIN_UP;
+ do_sony_cmd( cmd,1, status, NULL,0, 0);
+ spin_up_retry = 1;
+ goto try_read_again;
+ }
+
+ printk("Sony CDROM Read error: 0x%.2x\n", status[0]);
+ sony_first_block = -1;
+ sony_last_block = -1;
+ end_request(0);
+ return;
+ }
+ }
+
+ /*
+ * The data is in memory now, copy it to the buffer and advance to the
+ * next block to read.
+ */
+ copyoff = (block - sony_first_block) * 512;
+ memcpy(CURRENT->buffer, sony_buffer+copyoff, 512);
+
+ block += 1;
+ nsect -= 1;
+ CURRENT->buffer += 512;
+ }
+
+ end_request(1);
+ break;
+
+ case WRITE:
+ end_request(0);
+ break;
+
+ default:
+ panic("Unkown SONY CD cmd");
+ }
+ }
+}
+
+
+/*
+ * Read the table of contents from the drive and set sony_toc_read if
+ * successful.
+ */
+static void
+sony_get_toc(void)
+{
+ unsigned char status[2];
+
+ if ( !sony_toc_read )
+ {
+ /* do not call check_drive_status() from here since it can call this routine */
+ if ( request_toc_data( status, sony_toc ) < 0 )
+ return;
+ sony_toc->lead_out_start_lba = msf_to_log(sony_toc->lead_out_start_msf);
+ sony_toc_read = 1;
+ }
+}
+
+
+/*
+ * Search for a specific track in the table of contents. track is
+ * passed in bcd format
+ */
+static int
+find_track(int track)
+{
+ int i;
+ int num_tracks;
+
+
+ num_tracks = bcd_to_int(sony_toc->last_track_num) -
+ bcd_to_int(sony_toc->first_track_num) + 1;
+ for (i = 0; i < num_tracks; i++)
+ {
+ if (sony_toc->tracks[i].track == track)
+ {
+ return i;
+ }
+ }
+
+ return -1;
+}
+
+/*
+ * Read the subcode and put it int last_sony_subcode for future use.
+ */
+static int
+read_subcode(void)
+{
+ Byte cmd = SONY535_REQUEST_SUB_Q_DATA, status[2];
+ int dsc_status;
+
+ if ( check_drive_status() != 0 )
+ return( -EIO );
+
+ if ( (dsc_status=do_sony_cmd( &cmd,1, status, (Byte *)last_sony_subcode,
+ sizeof(struct s535_sony_subcode), 1 )) != 0 )
+ {
+ printk("Sony CDROM error 0x%.2x, %d (read_subcode)\n", status[0],
+ dsc_status );
+ return( -EIO );
+ }
+ return(0);
+}
+
+
+/*
+ * Get the subchannel info like the CDROMSUBCHNL command wants to see it. If
+ * the drive is playing, the subchannel needs to be read (since it would be
+ * changing). If the drive is paused or completed, the subcode information has
+ * already been stored, just use that. The ioctl call wants things in decimal
+ * (not BCD), so all the conversions are done.
+ */
+static int
+sony_get_subchnl_info(long arg)
+{
+ struct cdrom_subchnl schi;
+
+
+ /* Get attention stuff */
+ if ( check_drive_status() != 0 )
+ return( -EIO );
+
+ sony_get_toc();
+ if (!sony_toc_read)
+ {
+ return -EIO;
+ }
+
+ verify_area(VERIFY_WRITE /* and read */, (char *) arg, sizeof(schi));
+
+ memcpy_fromfs(&schi, (char *) arg, sizeof(schi));
+
+ switch (sony_audio_status)
+ {
+ case CDROM_AUDIO_PLAY:
+ if (read_subcode() < 0)
+ {
+ return -EIO;
+ }
+ break;
+
+ case CDROM_AUDIO_PAUSED:
+ case CDROM_AUDIO_COMPLETED:
+ break;
+
+ case CDROM_AUDIO_NO_STATUS:
+ schi.cdsc_audiostatus = sony_audio_status;
+ memcpy_tofs((char *) arg, &schi, sizeof(schi));
+ return 0;
+ break;
+
+ case CDROM_AUDIO_INVALID:
+ case CDROM_AUDIO_ERROR:
+ default:
+ return -EIO;
+ }
+
+ schi.cdsc_audiostatus = sony_audio_status;
+ schi.cdsc_adr = last_sony_subcode->address;
+ schi.cdsc_ctrl = last_sony_subcode->control;
+ schi.cdsc_trk = bcd_to_int(last_sony_subcode->track_num);
+ schi.cdsc_ind = bcd_to_int(last_sony_subcode->index_num);
+ if (schi.cdsc_format == CDROM_MSF)
+ {
+ schi.cdsc_absaddr.msf.minute = bcd_to_int(last_sony_subcode->abs_msf[0]);
+ schi.cdsc_absaddr.msf.second = bcd_to_int(last_sony_subcode->abs_msf[1]);
+ schi.cdsc_absaddr.msf.frame = bcd_to_int(last_sony_subcode->abs_msf[2]);
+
+ schi.cdsc_reladdr.msf.minute = bcd_to_int(last_sony_subcode->rel_msf[0]);
+ schi.cdsc_reladdr.msf.second = bcd_to_int(last_sony_subcode->rel_msf[1]);
+ schi.cdsc_reladdr.msf.frame = bcd_to_int(last_sony_subcode->rel_msf[2]);
+ }
+ else if (schi.cdsc_format == CDROM_LBA)
+ {
+ schi.cdsc_absaddr.lba = msf_to_log(last_sony_subcode->abs_msf);
+ schi.cdsc_reladdr.lba = msf_to_log(last_sony_subcode->rel_msf);
+ }
+
+ memcpy_tofs((char *) arg, &schi, sizeof(schi));
+ return 0;
+}
+
+
+/*
+ * The big ugly ioctl handler.
+ */
+static int
+scd_ioctl(struct inode *inode,
+ struct file *file,
+ unsigned int cmd,
+ unsigned long arg)
+{
+ unsigned int dev;
+ unsigned char status[2];
+ unsigned char cmd_buff[10], params[10];
+ int i, dsc_status;
+
+
+ if (!inode)
+ {
+ return -EINVAL;
+ }
+ dev = MINOR(inode->i_rdev) >> 6;
+ if (dev != 0)
+ {
+ return -EINVAL;
+ }
+
+ if ( check_drive_status() != 0 )
+ return( -EIO );
+
+ switch (cmd)
+ {
+ case CDROMSTART: /* Spin up the drive */
+ if ( spin_up_drive( status ) < 0 )
+ {
+ printk("Sony CDROM error 0x%.2x (CDROMSTART)\n", status[0]);
+ return -EIO;
+ }
+ return 0;
+ break;
+
+ case CDROMSTOP: /* Spin down the drive */
+ cmd_buff[0] = SONY535_HOLD;
+ do_sony_cmd( cmd_buff,1, status, NULL,0, 0 );
+
+ /*
+ * Spin the drive down, ignoring the error if the disk was
+ * already not spinning.
+ */
+ sony_audio_status = CDROM_AUDIO_NO_STATUS;
+ cmd_buff[0] = SONY535_SPIN_DOWN;
+ dsc_status = do_sony_cmd( cmd_buff,1, status, NULL,0, 0 );
+ if ( (( dsc_status < 0 ) && (dsc_status != BAD_STATUS)) ||
+ ( (status[0] & ~(SONY535_STATUS1_NOT_SPINNING)) != 0) )
+ {
+ printk("Sony CDROM error 0x%.2x (CDROMSTOP)\n", status[0]);
+ return -EIO;
+ }
+
+ return 0;
+ break;
+
+ case CDROMPAUSE: /* Pause the drive */
+ cmd_buff[0] = SONY535_HOLD; /* CDU-31 driver uses AUDIO_STOP, not pause */
+ if ( do_sony_cmd( cmd_buff,1, status, NULL,0, 0 ) != 0 )
+ {
+ printk("Sony CDROM error 0x%.2x (CDROMPAUSE)\n", status[0]);
+ return -EIO;
+ }
+
+ /* Get the current position and save it for resuming */
+ if (read_subcode() < 0)
+ {
+ return -EIO;
+ }
+ cur_pos_msf[0] = last_sony_subcode->abs_msf[0];
+ cur_pos_msf[1] = last_sony_subcode->abs_msf[1];
+ cur_pos_msf[2] = last_sony_subcode->abs_msf[2];
+ sony_audio_status = CDROM_AUDIO_PAUSED;
+ return 0;
+ break;
+
+ case CDROMRESUME: /* Start the drive after being paused */
+ set_drive_mode( SONY535_AUDIO_DRIVE_MODE, status );
+
+ if (sony_audio_status != CDROM_AUDIO_PAUSED)
+ {
+ return -EINVAL;
+ }
+
+ spin_up_drive( status );
+
+ /* Start the drive at the saved position. */
+ cmd_buff[0] = SONY535_PLAY_AUDIO;
+ cmd_buff[1] = 0; /* play back starting at this address */
+ cmd_buff[2] = cur_pos_msf[0];
+ cmd_buff[3] = cur_pos_msf[1];
+ cmd_buff[4] = cur_pos_msf[2];
+ cmd_buff[5] = SONY535_PLAY_AUDIO;
+ cmd_buff[6] = 2; /* set ending address */
+ cmd_buff[7] = final_pos_msf[0];
+ cmd_buff[8] = final_pos_msf[1];
+ cmd_buff[9] = final_pos_msf[2];
+ if ( (do_sony_cmd( cmd_buff,5, status, NULL,0, 0 ) != 0 ) ||
+ (do_sony_cmd( cmd_buff+5,5, status, NULL,0, 0 ) != 0 ) )
+ {
+ printk("Sony CDROM error 0x%.2x (CDROMRESUME)\n", status[0]);
+ return -EIO;
+ }
+ sony_audio_status = CDROM_AUDIO_PLAY;
+ return 0;
+ break;
+
+ case CDROMPLAYMSF: /* Play starting at the given MSF address. */
+ verify_area(VERIFY_READ, (char *) arg, 6);
+ spin_up_drive( status );
+ set_drive_mode( SONY535_AUDIO_DRIVE_MODE, status );
+ memcpy_fromfs(params, (void *) arg, 6);
+
+ /* The parameters are given in int, must be converted */
+ for (i=0; i<3; i++)
+ {
+ cmd_buff[2+i] = int_to_bcd(params[i]);
+ cmd_buff[7+i] = int_to_bcd(params[i+3]);
+ }
+ cmd_buff[0] = SONY535_PLAY_AUDIO;
+ cmd_buff[1] = 0; /* play back starting at this address */
+ /* cmd_buff[2-4] are filled in for loop above */
+ cmd_buff[5] = SONY535_PLAY_AUDIO;
+ cmd_buff[6] = 2; /* set ending address */
+ /* cmd_buff[7-9] are filled in for loop above */
+ if ( (do_sony_cmd( cmd_buff,5, status, NULL,0, 0 ) != 0 ) ||
+ (do_sony_cmd( cmd_buff+5,5, status, NULL,0, 0 ) != 0 ) )
+ {
+ printk("Sony CDROM error 0x%.2x (CDROMPLAYMSF)\n", status[0]);
+ return -EIO;
+ }
+
+ /* Save the final position for pauses and resumes */
+ final_pos_msf[0] = cmd_buff[7];
+ final_pos_msf[1] = cmd_buff[8];
+ final_pos_msf[2] = cmd_buff[9];
+ sony_audio_status = CDROM_AUDIO_PLAY;
+ return 0;
+ break;
+
+ case CDROMREADTOCHDR: /* Read the table of contents header */
+ {
+ struct cdrom_tochdr *hdr;
+ struct cdrom_tochdr loc_hdr;
+
+ sony_get_toc();
+ if (!sony_toc_read)
+ {
+ return -EIO;
+ }
+
+ hdr = (struct cdrom_tochdr *) arg;
+ verify_area(VERIFY_WRITE, hdr, sizeof(*hdr));
+ loc_hdr.cdth_trk0 = bcd_to_int(sony_toc->first_track_num);
+ loc_hdr.cdth_trk1 = bcd_to_int(sony_toc->last_track_num);
+ memcpy_tofs(hdr, &loc_hdr, sizeof(*hdr));
+ }
+ return 0;
+ break;
+
+ case CDROMREADTOCENTRY: /* Read a given table of contents entry */
+ {
+ struct cdrom_tocentry *entry;
+ struct cdrom_tocentry loc_entry;
+ int track_idx;
+ unsigned char *msf_val = NULL;
+
+ sony_get_toc();
+ if (!sony_toc_read)
+ {
+ return -EIO;
+ }
+
+ entry = (struct cdrom_tocentry *) arg;
+ verify_area(VERIFY_WRITE /* and read */, entry, sizeof(*entry));
+
+ memcpy_fromfs(&loc_entry, entry, sizeof(loc_entry));
+
+ /* Lead out is handled separately since it is special. */
+ if (loc_entry.cdte_track == CDROM_LEADOUT)
+ {
+ loc_entry.cdte_adr = 0 /*sony_toc->address2*/;
+ loc_entry.cdte_ctrl = sony_toc->control2;
+ msf_val = sony_toc->lead_out_start_msf;
+ }
+ else
+ {
+ track_idx = find_track(int_to_bcd(loc_entry.cdte_track));
+ if (track_idx < 0)
+ {
+ return -EINVAL;
+ }
+
+ loc_entry.cdte_adr = 0 /*sony_toc->tracks[track_idx].address*/;
+ loc_entry.cdte_ctrl = sony_toc->tracks[track_idx].control;
+ msf_val = sony_toc->tracks[track_idx].track_start_msf;
+ }
+
+ /* Logical buffer address or MSF format requested? */
+ if (loc_entry.cdte_format == CDROM_LBA)
+ {
+ loc_entry.cdte_addr.lba = msf_to_log(msf_val);
+ }
+ else if (loc_entry.cdte_format == CDROM_MSF)
+ {
+ loc_entry.cdte_addr.msf.minute = bcd_to_int(*msf_val);
+ loc_entry.cdte_addr.msf.second = bcd_to_int(*(msf_val+1));
+ loc_entry.cdte_addr.msf.frame = bcd_to_int(*(msf_val+2));
+ }
+ memcpy_tofs(entry, &loc_entry, sizeof(*entry));
+ }
+ return 0;
+ break;
+
+ case CDROMPLAYTRKIND: /* Play a track. This currently ignores index. */
+ {
+ struct cdrom_ti ti;
+ int track_idx;
+
+ sony_get_toc();
+ if (!sony_toc_read)
+ {
+ return -EIO;
+ }
+
+ verify_area( VERIFY_READ, (char *) arg, sizeof(ti));
+
+ memcpy_fromfs(&ti, (char *) arg, sizeof(ti));
+ if ( (ti.cdti_trk0 < sony_toc->first_track_num)
+ || (ti.cdti_trk0 > sony_toc->last_track_num)
+ || (ti.cdti_trk1 < ti.cdti_trk0))
+ {
+ return -EINVAL;
+ }
+
+ track_idx = find_track(int_to_bcd(ti.cdti_trk0));
+ if (track_idx < 0)
+ {
+ return -EINVAL;
+ }
+ params[1] = sony_toc->tracks[track_idx].track_start_msf[0];
+ params[2] = sony_toc->tracks[track_idx].track_start_msf[1];
+ params[3] = sony_toc->tracks[track_idx].track_start_msf[2];
+ /*
+ * If we want to stop after the last track, use the lead-out
+ * MSF to do that.
+ */
+ if (ti.cdti_trk1 >= bcd_to_int(sony_toc->last_track_num))
+ {
+ log_to_msf(msf_to_log(sony_toc->lead_out_start_msf)-1,
+ &(params[4]));
+ }
+ else
+ {
+ track_idx = find_track(int_to_bcd(ti.cdti_trk1+1));
+ if (track_idx < 0)
+ {
+ return -EINVAL;
+ }
+ log_to_msf(msf_to_log(sony_toc->tracks[track_idx].track_start_msf)-1,
+ &(params[4]));
+ }
+ params[0] = 0x03;
+
+ spin_up_drive( status );
+
+ set_drive_mode( SONY535_AUDIO_DRIVE_MODE, status );
+
+ /* Start the drive at the saved position. */
+ cmd_buff[0] = SONY535_PLAY_AUDIO;
+ cmd_buff[1] = 0; /* play back starting at this address */
+ cmd_buff[2] = params[1];
+ cmd_buff[3] = params[2];
+ cmd_buff[4] = params[3];
+ cmd_buff[5] = SONY535_PLAY_AUDIO;
+ cmd_buff[6] = 2; /* set ending address */
+ cmd_buff[7] = params[4];
+ cmd_buff[8] = params[5];
+ cmd_buff[9] = params[6];
+ if ( (do_sony_cmd( cmd_buff,5, status, NULL,0, 0 ) != 0 ) ||
+ (do_sony_cmd( cmd_buff+5,5, status, NULL,0, 0 ) != 0 ) )
+ {
+ printk("Params: %x %x %x %x %x %x %x\n", params[0], params[1],
+ params[2], params[3], params[4], params[5], params[6]);
+ printk("Sony CDROM error 0x%.2x (CDROMPLAYTRKIND)\n", status[0]);
+ return -EIO;
+ }
+
+ /* Save the final position for pauses and resumes */
+ final_pos_msf[0] = params[4];
+ final_pos_msf[1] = params[5];
+ final_pos_msf[2] = params[6];
+ sony_audio_status = CDROM_AUDIO_PLAY;
+ return 0;
+ }
+
+ case CDROMSUBCHNL: /* Get subchannel info */
+ return sony_get_subchnl_info(arg);
+
+ case CDROMVOLCTRL: /* Volume control. What volume does this change, anyway? */
+ {
+ struct cdrom_volctrl volctrl;
+
+ verify_area(VERIFY_READ, (char *) arg, sizeof(volctrl));
+
+ memcpy_fromfs(&volctrl, (char *) arg, sizeof(volctrl));
+ cmd_buff[0] = SONY535_SET_VOLUME;
+ cmd_buff[1] = volctrl.channel0;
+ cmd_buff[2] = volctrl.channel1;
+ if ( do_sony_cmd( cmd_buff,3, status, NULL,0, 0 ) != 0 )
+ {
+ printk("Sony CDROM error 0x%.2x (CDROMVOLCTRL)\n", status[0]);
+ return -EIO;
+ }
+ }
+ return 0;
+
+ case CDROMEJECT: /* Eject the drive */
+ cmd_buff[0] = SONY535_STOP;
+ do_sony_cmd( cmd_buff,1, status, NULL,0, 0 );
+ cmd_buff[0] = SONY535_SPIN_DOWN;
+ do_sony_cmd( cmd_buff,1, status, NULL,0, 0 );
+
+ sony_audio_status = CDROM_AUDIO_INVALID;
+ cmd_buff[0] = SONY535_EJECT_CADDY;
+ if ( do_sony_cmd( cmd_buff,1, status, NULL,0, 0 ) != 0 )
+ {
+ printk("Sony CDROM error 0x%.2x (CDROMEJECT)\n", status[0]);
+ return -EIO;
+ }
+ return 0;
+ break;
+
+ default:
+ return -EINVAL;
+ }
+}
+
+
+/*
+ * Open the drive for operations. Spin the drive up and read the table of
+ * contents if these have not already been done.
+ */
+static int
+scd_open(struct inode *inode,
+ struct file *filp)
+{
+ unsigned char status[2], cmd_buff[2];
+
+
+ if ( sony_inuse )
+ {
+ return( -EBUSY );
+ }
+
+ if ( check_drive_status() != 0 )
+ {
+ return( -EIO );
+ }
+
+ sony_inuse = 1;
+
+ if ( spin_up_drive( status ) != 0 )
+ {
+ printk("Sony CDROM error 0x%.2x (scd_open, spin up)\n", status[0]);
+ sony_inuse = 0;
+ return -EIO;
+ }
+
+#if 0 /* what is this doing - CDU-535 does not have separate READ and REQ_TOC */
+ do_sony_cd_cmd(SONY_READ_TOC_CMD, NULL, 0, res_reg, &res_size);
+ if ((res_size < 2) || (res_reg[0] != 0))
+ {
+ /* If the drive is already playing, its ok. */
+ if (res_reg[1] == SONY_AUDIO_PLAYING_ERR)
+ {
+ goto drive_spinning;
+ }
+
+ printk("Sony CDROM error 0x%.2x (scd_open, read toc)\n", res_reg[1]);
+ do_sony_cd_cmd(SONY_SPIN_DOWN_CMD, NULL, 0, res_reg, &res_size);
+
+ sony_inuse = 0;
+ return -EIO;
+ }
+#endif
+
+ sony_get_toc();
+ if (!sony_toc_read)
+ {
+ cmd_buff[0] = SONY535_SPIN_DOWN;
+ do_sony_cmd( cmd_buff,1, status, NULL,0, 0 );
+ sony_inuse = 0;
+ return -EIO;
+ }
+
+#if 0 /* not used without stuff read toc above */
+drive_spinning:
+#endif
+
+ if ( inode )
+ {
+ check_disk_change(inode->i_rdev);
+ }
+
+ sony_usage++;
+
+#ifdef LOCK_DOORS
+ /* disable the eject button while mounted */
+ cmd_buff[0] = SONY535_DISABLE_EJECT_BUTTON;
+ do_sony_cmd( cmd_buff,1, status, NULL,0, 0 );
+#endif
+
+ return 0;
+}
+
+
+/*
+ * Close the drive. Spin it down if no task is using it. The spin
+ * down will fail if playing audio, so audio play is OK.
+ */
+static void
+scd_release(struct inode *inode,
+ struct file *filp)
+{
+ unsigned char status[2], cmd_no;
+
+ sony_inuse = 0;
+
+ if (sony_usage > 0)
+ {
+ sony_usage--;
+ }
+ if (sony_usage == 0)
+ {
+ sync_dev(inode->i_rdev);
+ check_drive_status();
+
+ if ( sony_audio_status != CDROM_AUDIO_PLAY ) {
+ cmd_no = SONY535_SPIN_DOWN;
+ do_sony_cmd( &cmd_no,1, status, NULL,0, 0 );
+ }
+#ifdef LOCK_DOORS
+ /* enable the eject button after umount */
+ cmd_no = SONY535_ENABLE_EJECT_BUTTON;
+ do_sony_cmd( &cmd_no,1, status, NULL,0, 0 );
+#endif
+ }
+}
+
+
+static struct file_operations scd_fops = {
+ NULL, /* lseek - default */
+ block_read, /* read - general block-dev read */
+ block_write, /* write - general block-dev write */
+ NULL, /* readdir - bad */
+ NULL, /* select */
+ scd_ioctl, /* ioctl */
+ NULL, /* mmap */
+ scd_open, /* open */
+ scd_release /* release */
+};
+
+
+/*
+ * Initialize the driver.
+ */
+unsigned long
+init_sony535(unsigned long mem_start, unsigned long mem_end)
+{
+ struct s535_sony_drive_config drive_config;
+ unsigned char cmd_buff[3], ret_buff[2];
+ unsigned char status[2];
+ int retry_count;
+
+
+ /* Set up all the register locations */
+ result_reg = sony_cd_base_io;
+ command_reg = sony_cd_base_io;
+ data_reg = sony_cd_base_io + 1;
+ read_status_reg = sony_cd_base_io + 2;
+ select_unit_reg = sony_cd_base_io + 3;
+
+ /* look for the CD-ROM, follows the procedure in the DOS driver */
+ inb( select_unit_reg );
+ retry_count = jiffies + 2*HZ;
+ while ( retry_count > jiffies )
+ sony_sleep(); /* wait for 40 18 Hz ticks (from DOS driver) */
+ inb( result_reg );
+
+ outb( 0, read_status_reg ); /* does a reset? */
+ retry_count = jiffies + SONY_JIFFIES_TIMEOUT;
+ while ( retry_count > jiffies )
+ {
+ select_unit(0);
+ if ( inb( result_reg ) != 0xff )
+ break;
+ sony_sleep(); /* about 1-2 ms on my machine */
+ }
+
+ if ( (retry_count > jiffies) && (check_drive_status() != TIME_OUT) )
+ {
+ /* CD-ROM drive responded -- get the drive configuration */
+ cmd_buff[0] = SONY535_INQUIRY;
+ if ( do_sony_cmd( cmd_buff,1, status, (Byte *)&drive_config, 28, 1) == 0 )
+ {
+ /* was able to get the configuration, set drive mode as rest of init */
+ if ( (status[0] & 0x7f) != 0 )
+ printk("Inquiry command returned status = 0x%x\n",status[0]);
+ cmd_buff[0] = SONY535_SET_DRIVE_MODE;
+ cmd_buff[1] = 0x0; /* default audio */
+ if (do_sony_cmd( cmd_buff,2, status, ret_buff,1, 1 ) == 0 )
+ {
+ /* set the drive mode successful, we are set! */
+ sony_buffer_size = SONY535_BUFFER_SIZE;
+ sony_buffer_sectors = sony_buffer_size / 2048;
+
+ printk("Sony I/F CDROM : %8.8s %16.16s %4.4s",
+ drive_config.vendor_id,
+ drive_config.product_id,
+ drive_config.product_rev_level );
+ printk(" using %d byte buffer\n", sony_buffer_size);
+
+ if (register_blkdev(MAJOR_NR,"scd",&scd_fops)) {
+ printk("Unable to get major %d for sony CDU-535 cd\n",MAJOR_NR);
+ return( mem_start );
+ }
+ blk_dev[MAJOR_NR].request_fn = DEVICE_REQUEST;
+ read_ahead[MAJOR_NR] = 8; /* 8 sector (4kB) read-ahead */
+
+ sony_toc = (struct s535_sony_toc *) mem_start;
+ mem_start += sizeof(*sony_toc);
+ last_sony_subcode = (struct s535_sony_subcode *) mem_start;
+ mem_start += sizeof(*last_sony_subcode);
+ sony_buffer = (unsigned char *) mem_start;
+ mem_start += sony_buffer_size;
+
+ initialized = 1;
+ }
+ }
+ }
+
+ if ( !initialized )
+ printk( "Did not find a Sony CDU-535 drive\n");
+
+ return mem_start;
+}
+
+#endif /* CONFIG_CDU535 */
diff -ru --new-file linux-1.0/fs/buffer.c linux/fs/buffer.c
--- linux-1.0/fs/buffer.c Thu Mar 10 12:20:55 1994
+++ linux/fs/buffer.c Tue Mar 15 11:37:54 1994
@@ -45,6 +45,9 @@
#ifdef CONFIG_MCD
extern int check_mcd_media_change(int, int);
#endif
+#ifdef CONFIG_CDU535
+extern int sony535_check_cdrom_media_change(int, int);
+#endif
static int grow_buffers(int pri, int size);
@@ -239,6 +242,12 @@
#if defined(CONFIG_BLK_DEV_SR) && defined(CONFIG_SCSI)
case SCSI_CDROM_MAJOR:
i = check_cdrom_media_change(dev, 0);
+ break;
+#endif
+
+#if defined (CONFIG_CDU535)
+ case CDU535_CDROM_MAJOR: /* Sony CDU-535 I/F CDROM */
+ i = sony535_check_cdrom_media_change(dev, 0);
break;
#endif
diff -ru --new-file linux-1.0/fs/isofs/inode.c linux/fs/isofs/inode.c
--- linux-1.0/fs/isofs/inode.c Sun Mar 13 18:39:14 1994
+++ linux/fs/isofs/inode.c Tue Mar 15 11:37:55 1994
@@ -38,6 +38,9 @@
static int check_malloc = 0;
static int check_bread = 0;
#endif
+#if defined(CONFIG_CDU535)
+extern int sony535_check_cdrom_media_change(int, int);
+#endif
void isofs_put_super(struct super_block *sb)
{
@@ -288,6 +291,13 @@
if (MAJOR(s->s_dev) == MITSUMI_CDROM_MAJOR) {
/* Check this one more time. */
if(check_mcd_media_change(s->s_dev, 0))
+ goto out;
+ };
+#endif
+#if defined (CONFIG_CDU535)
+ if(MAJOR(s->s_dev) == CDU535_CDROM_MAJOR) {
+ /* Check this one more time. */
+ if(sony535_check_cdrom_media_change(s->s_dev, 0))
goto out;
}
#endif
diff -ru --new-file linux-1.0/include/linux/sonycd535.h linux/include/linux/sonycd535.h
--- linux-1.0/include/linux/sonycd535.h Thu Jan 1 00:00:00 1970
+++ linux/include/linux/sonycd535.h Tue Mar 15 11:37:56 1994
@@ -0,0 +1,183 @@
+#ifndef SONYCD535_H
+#define SONYCD535_H
+
+/*
+ * define all the commands recognized by the CDU-531/5
+ */
+#define SONY535_REQUEST_DRIVE_STATUS_1 (0x80)
+#define SONY535_REQUEST_SENSE (0x82)
+#define SONY535_REQUEST_DRIVE_STATUS_2 (0x84)
+#define SONY535_REQUEST_ERROR_STATUS (0x86)
+#define SONY535_REQUEST_AUDIO_STATUS (0x88)
+#define SONY535_INQUIRY (0x8a)
+
+#define SONY535_SET_INACTIVITY_TIME (0x90)
+
+#define SONY535_SEEK_AND_READ_N_BLOCKS_1 (0xa0)
+#define SONY535_SEEK_AND_READ_N_BLOCKS_2 (0xa4)
+#define SONY535_PLAY_AUDIO (0xa6)
+
+#define SONY535_REQUEST_DISC_CAPACITY (0xb0)
+#define SONY535_REQUEST_TOC_DATA (0xb2)
+#define SONY535_REQUEST_SUB_Q_DATA (0xb4)
+#define SONY535_REQUEST_ISRC (0xb6)
+#define SONY535_REQUEST_UPC_EAN (0xb8)
+
+#define SONY535_SET_DRIVE_MODE (0xc0)
+#define SONY535_REQUEST_DRIVE_MODE (0xc2)
+#define SONY535_SET_RETRY_COUNT (0xc4)
+
+#define SONY535_DIAGNOSTIC_1 (0xc6)
+#define SONY535_DIAGNOSTIC_4 (0xcc)
+#define SONY535_DIAGNOSTIC_5 (0xce)
+
+#define SONY535_EJECT_CADDY (0xd0)
+#define SONY535_DISABLE_EJECT_BUTTON (0xd2)
+#define SONY535_ENABLE_EJECT_BUTTON (0xd4)
+
+#define SONY535_HOLD (0xe0)
+#define SONY535_AUDIO_PAUSE_ON_OFF (0xe2)
+#define SONY535_SET_VOLUME (0xe8)
+
+#define SONY535_STOP (0xf0)
+#define SONY535_SPIN_UP (0xf2)
+#define SONY535_SPIN_DOWN (0xf4)
+
+#define SONY535_CLEAR_PARAMETERS (0xf6)
+#define SONY535_CLEAR_ENDING_ADDRESS (0xf8)
+
+/*
+ * define some masks
+ */
+#define SONY535_DATA_NOT_READY_BIT (0x1)
+#define SONY535_RESULT_NOT_READY_BIT (0x2)
+
+/*
+ * drive status 1
+ */
+#define SONY535_STATUS1_COMMAND_ERROR (0x1)
+#define SONY535_STATUS1_DATA_ERROR (0x2)
+#define SONY535_STATUS1_SEEK_ERROR (0x4)
+#define SONY535_STATUS1_DISC_TYPE_ERROR (0x8)
+#define SONY535_STATUS1_NOT_SPINNING (0x10)
+#define SONY535_STATUS1_EJECT_BUTTON_PRESSED (0x20)
+#define SONY535_STATUS1_CADDY_NOT_INSERTED (0x40)
+#define SONY535_STATUS1_BYTE_TWO_FOLLOWS (0x80)
+
+/*
+ * drive status 2
+ */
+#define SONY535_CDD_LOADING_ERROR (0x7)
+#define SONY535_CDD_NO_DISC (0x8)
+#define SONY535_CDD_UNLOADING_ERROR (0x9)
+#define SONY535_CDD_CADDY_NOT_INSERTED (0xd)
+#define SONY535_ATN_RESET_OCCURRED (0x2)
+#define SONY535_ATN_DISC_CHANGED (0x4)
+#define SONY535_ATN_RESET_AND_DISC_CHANGED (0x6)
+#define SONY535_ATN_EJECT_IN_PROGRESS (0xe)
+#define SONY535_ATN_BUSY (0xf)
+
+/*
+ * define some parameters
+ */
+#define SONY535_AUDIO_DRIVE_MODE (0)
+#define SONY535_CDROM_DRIVE_MODE (0xe0)
+
+#define SONY535_PLAY_OP_PLAYBACK (0)
+#define SONY535_PLAY_OP_ENTER_HOLD (1)
+#define SONY535_PLAY_OP_SET_AUDIO_ENDING_ADDR (2)
+#define SONY535_PLAY_OP_SCAN_FORWARD (3)
+#define SONY535_PLAY_OP_SCAN_BACKWARD (4)
+
+/*
+ * convert from msf format to block number
+ */
+#define SONY_BLOCK_NUMBER(m,s,f) (((m)*60L+(s))*75L+(f))
+#define SONY_BLOCK_NUMBER_MSF(x) (((x)[0]*60L+(x)[1])*75L+(x)[2])
+
+/*
+ * error return values from the doSonyCmd() routines
+ */
+#define TIME_OUT (-1)
+#define NO_CDROM (-2)
+#define BAD_STATUS (-3)
+#define CD_BUSY (-4)
+#define NOT_DATA_CD (-5)
+#define NO_ROOM (-6)
+
+#define LOG_START_OFFSET 150 /* Offset of first logical sector */
+
+#define SONY_JIFFIES_TIMEOUT 500 /* Maximum number of jiffies (10ms)
+ the drive will wait/try for an
+ operation */
+#define SONY_READY_RETRIES (50000) /* How many times to retry a
+ spin waiting for a register
+ to come ready */
+#define SONY535_FAST_POLLS (10000) /* how many times recheck
+ status waiting for a data
+ to become ready */
+
+typedef unsigned char Byte;
+
+/*
+ * This is the complete status returned from the drive configuration request
+ * command.
+ */
+struct s535_sony_drive_config
+{
+ char vendor_id[8];
+ char product_id[16];
+ char product_rev_level[4];
+};
+
+/* The following is returned from the request sub-q data command */
+struct s535_sony_subcode
+{
+ unsigned char address :4;
+ unsigned char control :4;
+ unsigned char track_num;
+ unsigned char index_num;
+ unsigned char rel_msf[3];
+ unsigned char abs_msf[3];
+};
+
+struct s535_sony_disc_capacity
+{
+ Byte mFirstTrack, sFirstTrack, fFirstTrack;
+ Byte mLeadOut, sLeadOut, fLeadOut;
+};
+
+/*
+ * The following is returned from the request TOC (Table Of Contents) command.
+ * (last_track_num-first_track_num+1) values are valid in tracks.
+ */
+struct s535_sony_toc
+{
+ unsigned char reserved0 :4;
+ unsigned char control0 :4;
+ unsigned char point0;
+ unsigned char first_track_num;
+ unsigned char reserved0a;
+ unsigned char reserved0b;
+ unsigned char reserved1 :4;
+ unsigned char control1 :4;
+ unsigned char point1;
+ unsigned char last_track_num;
+ unsigned char dummy1;
+ unsigned char dummy2;
+ unsigned char reserved2 :4;
+ unsigned char control2 :4;
+ unsigned char point2;
+ unsigned char lead_out_start_msf[3];
+ struct
+ {
+ unsigned char reserved :4;
+ unsigned char control :4;
+ unsigned char track;
+ unsigned char track_start_msf[3];
+ } tracks[100];
+
+ unsigned int lead_out_start_lba;
+};
+
+#endif /* SONYCD535_H */