![Linus Torvalds](/assets/img/avatar_default.png)
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
1818 lines
42 KiB
C
1818 lines
42 KiB
C
/* -- sjcd.c
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*
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* Sanyo CD-ROM device driver implementation, Version 1.6
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* Copyright (C) 1995 Vadim V. Model
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*
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* model@cecmow.enet.dec.com
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* vadim@rbrf.ru
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* vadim@ipsun.ras.ru
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*
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*
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* This driver is based on pre-works by Eberhard Moenkeberg (emoenke@gwdg.de);
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* it was developed under use of mcd.c from Martin Harriss, with help of
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* Eric van der Maarel (H.T.M.v.d.Maarel@marin.nl).
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*
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* It is planned to include these routines into sbpcd.c later - to make
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* a "mixed use" on one cable possible for all kinds of drives which use
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* the SoundBlaster/Panasonic style CDROM interface. But today, the
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* ability to install directly from CDROM is more important than flexibility.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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* History:
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* 1.1 First public release with kernel version 1.3.7.
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* Written by Vadim Model.
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* 1.2 Added detection and configuration of cdrom interface
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* on ISP16 soundcard.
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* Allow for command line options: sjcd=<io_base>,<irq>,<dma>
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* 1.3 Some minor changes to README.sjcd.
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* 1.4 MSS Sound support!! Listen to a CD through the speakers.
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* 1.5 Module support and bugfixes.
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* Tray locking.
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* 1.6 Removed ISP16 code from this driver.
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* Allow only to set io base address on command line: sjcd=<io_base>
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* Changes to Documentation/cdrom/sjcd
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* Added cleanup after any error in the initialisation.
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* 1.7 Added code to set the sector size tables to prevent the bug present in
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* the previous version of this driver. Coded added by Anthony Barbachan
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* from bugfix tip originally suggested by Alan Cox.
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*
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* November 1999 -- Make kernel-parameter implementation work with 2.3.x
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* Removed init_module & cleanup_module in favor of
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* module_init & module_exit.
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* Torben Mathiasen <tmm@image.dk>
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*/
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#define SJCD_VERSION_MAJOR 1
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#define SJCD_VERSION_MINOR 7
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#include <linux/module.h>
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#include <linux/errno.h>
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#include <linux/sched.h>
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#include <linux/mm.h>
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#include <linux/timer.h>
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#include <linux/fs.h>
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#include <linux/kernel.h>
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#include <linux/cdrom.h>
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#include <linux/ioport.h>
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#include <linux/string.h>
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#include <linux/major.h>
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#include <linux/init.h>
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#include <asm/system.h>
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#include <asm/io.h>
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#include <asm/uaccess.h>
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#include <linux/blkdev.h>
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#include "sjcd.h"
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static int sjcd_present = 0;
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static struct request_queue *sjcd_queue;
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#define MAJOR_NR SANYO_CDROM_MAJOR
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#define QUEUE (sjcd_queue)
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#define CURRENT elv_next_request(sjcd_queue)
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#define SJCD_BUF_SIZ 32 /* cdr-h94a has internal 64K buffer */
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/*
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* buffer for block size conversion
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*/
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static char sjcd_buf[2048 * SJCD_BUF_SIZ];
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static volatile int sjcd_buf_bn[SJCD_BUF_SIZ], sjcd_next_bn;
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static volatile int sjcd_buf_in, sjcd_buf_out = -1;
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/*
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* Status.
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*/
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static unsigned short sjcd_status_valid = 0;
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static unsigned short sjcd_door_closed;
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static unsigned short sjcd_door_was_open;
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static unsigned short sjcd_media_is_available;
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static unsigned short sjcd_media_is_changed;
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static unsigned short sjcd_toc_uptodate = 0;
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static unsigned short sjcd_command_failed;
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static volatile unsigned char sjcd_completion_status = 0;
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static volatile unsigned char sjcd_completion_error = 0;
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static unsigned short sjcd_command_is_in_progress = 0;
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static unsigned short sjcd_error_reported = 0;
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static DEFINE_SPINLOCK(sjcd_lock);
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static int sjcd_open_count;
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static int sjcd_audio_status;
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static struct sjcd_play_msf sjcd_playing;
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static int sjcd_base = SJCD_BASE_ADDR;
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module_param(sjcd_base, int, 0);
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static DECLARE_WAIT_QUEUE_HEAD(sjcd_waitq);
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/*
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* Data transfer.
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*/
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static volatile unsigned short sjcd_transfer_is_active = 0;
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enum sjcd_transfer_state {
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SJCD_S_IDLE = 0,
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SJCD_S_START = 1,
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SJCD_S_MODE = 2,
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SJCD_S_READ = 3,
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SJCD_S_DATA = 4,
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SJCD_S_STOP = 5,
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SJCD_S_STOPPING = 6
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};
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static enum sjcd_transfer_state sjcd_transfer_state = SJCD_S_IDLE;
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static long sjcd_transfer_timeout = 0;
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static int sjcd_read_count = 0;
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static unsigned char sjcd_mode = 0;
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#define SJCD_READ_TIMEOUT 5000
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#if defined( SJCD_GATHER_STAT )
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/*
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* Statistic.
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*/
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static struct sjcd_stat statistic;
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#endif
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/*
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* Timer.
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*/
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static struct timer_list sjcd_delay_timer = TIMER_INITIALIZER(NULL, 0, 0);
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#define SJCD_SET_TIMER( func, tmout ) \
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( sjcd_delay_timer.expires = jiffies+tmout, \
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sjcd_delay_timer.function = ( void * )func, \
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add_timer( &sjcd_delay_timer ) )
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#define CLEAR_TIMER del_timer( &sjcd_delay_timer )
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/*
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* Set up device, i.e., use command line data to set
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* base address.
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*/
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#ifndef MODULE
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static int __init sjcd_setup(char *str)
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{
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int ints[2];
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(void) get_options(str, ARRAY_SIZE(ints), ints);
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if (ints[0] > 0)
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sjcd_base = ints[1];
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return 1;
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}
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__setup("sjcd=", sjcd_setup);
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#endif
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/*
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* Special converters.
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*/
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static unsigned char bin2bcd(int bin)
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{
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int u, v;
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u = bin % 10;
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v = bin / 10;
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return (u | (v << 4));
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}
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static int bcd2bin(unsigned char bcd)
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{
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return ((bcd >> 4) * 10 + (bcd & 0x0F));
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}
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static long msf2hsg(struct msf *mp)
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{
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return (bcd2bin(mp->frame) + bcd2bin(mp->sec) * 75
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+ bcd2bin(mp->min) * 4500 - 150);
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}
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static void hsg2msf(long hsg, struct msf *msf)
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{
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hsg += 150;
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msf->min = hsg / 4500;
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hsg %= 4500;
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msf->sec = hsg / 75;
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msf->frame = hsg % 75;
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msf->min = bin2bcd(msf->min); /* convert to BCD */
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msf->sec = bin2bcd(msf->sec);
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msf->frame = bin2bcd(msf->frame);
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}
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/*
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* Send a command to cdrom. Invalidate status.
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*/
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static void sjcd_send_cmd(unsigned char cmd)
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{
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#if defined( SJCD_TRACE )
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printk("SJCD: send_cmd( 0x%x )\n", cmd);
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#endif
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outb(cmd, SJCDPORT(0));
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sjcd_command_is_in_progress = 1;
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sjcd_status_valid = 0;
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sjcd_command_failed = 0;
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}
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/*
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* Send a command with one arg to cdrom. Invalidate status.
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*/
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static void sjcd_send_1_cmd(unsigned char cmd, unsigned char a)
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{
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#if defined( SJCD_TRACE )
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printk("SJCD: send_1_cmd( 0x%x, 0x%x )\n", cmd, a);
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#endif
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outb(cmd, SJCDPORT(0));
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outb(a, SJCDPORT(0));
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sjcd_command_is_in_progress = 1;
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sjcd_status_valid = 0;
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sjcd_command_failed = 0;
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}
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/*
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* Send a command with four args to cdrom. Invalidate status.
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*/
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static void sjcd_send_4_cmd(unsigned char cmd, unsigned char a,
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unsigned char b, unsigned char c,
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unsigned char d)
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{
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#if defined( SJCD_TRACE )
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printk("SJCD: send_4_cmd( 0x%x )\n", cmd);
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#endif
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outb(cmd, SJCDPORT(0));
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outb(a, SJCDPORT(0));
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outb(b, SJCDPORT(0));
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outb(c, SJCDPORT(0));
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outb(d, SJCDPORT(0));
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sjcd_command_is_in_progress = 1;
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sjcd_status_valid = 0;
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sjcd_command_failed = 0;
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}
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/*
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* Send a play or read command to cdrom. Invalidate Status.
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*/
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static void sjcd_send_6_cmd(unsigned char cmd, struct sjcd_play_msf *pms)
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{
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#if defined( SJCD_TRACE )
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printk("SJCD: send_long_cmd( 0x%x )\n", cmd);
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#endif
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outb(cmd, SJCDPORT(0));
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outb(pms->start.min, SJCDPORT(0));
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outb(pms->start.sec, SJCDPORT(0));
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outb(pms->start.frame, SJCDPORT(0));
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outb(pms->end.min, SJCDPORT(0));
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outb(pms->end.sec, SJCDPORT(0));
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outb(pms->end.frame, SJCDPORT(0));
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sjcd_command_is_in_progress = 1;
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sjcd_status_valid = 0;
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sjcd_command_failed = 0;
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}
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/*
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* Get a value from the data port. Should not block, so we use a little
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* wait for a while. Returns 0 if OK.
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*/
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static int sjcd_load_response(void *buf, int len)
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{
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unsigned char *resp = (unsigned char *) buf;
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for (; len; --len) {
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int i;
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for (i = 200;
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i-- && !SJCD_STATUS_AVAILABLE(inb(SJCDPORT(1))););
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if (i > 0)
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*resp++ = (unsigned char) inb(SJCDPORT(0));
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else
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break;
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}
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return (len);
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}
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/*
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* Load and parse command completion status (drive info byte and maybe error).
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* Sorry, no error classification yet.
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*/
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static void sjcd_load_status(void)
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{
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sjcd_media_is_changed = 0;
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sjcd_completion_error = 0;
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sjcd_completion_status = inb(SJCDPORT(0));
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if (sjcd_completion_status & SST_DOOR_OPENED) {
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sjcd_door_closed = sjcd_media_is_available = 0;
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} else {
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sjcd_door_closed = 1;
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if (sjcd_completion_status & SST_MEDIA_CHANGED)
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sjcd_media_is_available = sjcd_media_is_changed =
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1;
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else if (sjcd_completion_status & 0x0F) {
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/*
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* OK, we seem to catch an error ...
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*/
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while (!SJCD_STATUS_AVAILABLE(inb(SJCDPORT(1))));
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sjcd_completion_error = inb(SJCDPORT(0));
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if ((sjcd_completion_status & 0x08) &&
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(sjcd_completion_error & 0x40))
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sjcd_media_is_available = 0;
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else
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sjcd_command_failed = 1;
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} else
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sjcd_media_is_available = 1;
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}
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/*
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* Ok, status loaded successfully.
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*/
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sjcd_status_valid = 1, sjcd_error_reported = 0;
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sjcd_command_is_in_progress = 0;
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/*
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* If the disk is changed, the TOC is not valid.
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*/
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if (sjcd_media_is_changed)
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sjcd_toc_uptodate = 0;
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#if defined( SJCD_TRACE )
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printk("SJCD: status %02x.%02x loaded.\n",
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(int) sjcd_completion_status, (int) sjcd_completion_error);
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#endif
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}
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/*
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* Read status from cdrom. Check to see if the status is available.
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*/
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static int sjcd_check_status(void)
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{
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/*
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* Try to load the response from cdrom into buffer.
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*/
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if (SJCD_STATUS_AVAILABLE(inb(SJCDPORT(1)))) {
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sjcd_load_status();
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return (1);
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} else {
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/*
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* No status is available.
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*/
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return (0);
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}
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}
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/*
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* This is just timeout counter, and nothing more. Surprised ? :-)
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*/
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static volatile long sjcd_status_timeout;
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/*
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* We need about 10 seconds to wait. The longest command takes about 5 seconds
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* to probe the disk (usually after tray closed or drive reset). Other values
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* should be thought of for other commands.
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*/
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#define SJCD_WAIT_FOR_STATUS_TIMEOUT 1000
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static void sjcd_status_timer(void)
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{
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if (sjcd_check_status()) {
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/*
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* The command completed and status is loaded, stop waiting.
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*/
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wake_up(&sjcd_waitq);
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} else if (--sjcd_status_timeout <= 0) {
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/*
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* We are timed out.
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*/
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wake_up(&sjcd_waitq);
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} else {
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/*
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* We have still some time to wait. Try again.
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*/
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SJCD_SET_TIMER(sjcd_status_timer, 1);
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}
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}
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/*
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* Wait for status for 10 sec approx. Returns non-positive when timed out.
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* Should not be used while reading data CDs.
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*/
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static int sjcd_wait_for_status(void)
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{
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sjcd_status_timeout = SJCD_WAIT_FOR_STATUS_TIMEOUT;
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SJCD_SET_TIMER(sjcd_status_timer, 1);
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sleep_on(&sjcd_waitq);
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#if defined( SJCD_DIAGNOSTIC ) || defined ( SJCD_TRACE )
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if (sjcd_status_timeout <= 0)
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printk("SJCD: Error Wait For Status.\n");
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#endif
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return (sjcd_status_timeout);
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}
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static int sjcd_receive_status(void)
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{
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int i;
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#if defined( SJCD_TRACE )
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printk("SJCD: receive_status\n");
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#endif
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/*
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* Wait a bit for status available.
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*/
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for (i = 200; i-- && (sjcd_check_status() == 0););
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if (i < 0) {
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#if defined( SJCD_TRACE )
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printk("SJCD: long wait for status\n");
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#endif
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if (sjcd_wait_for_status() <= 0)
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printk("SJCD: Timeout when read status.\n");
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else
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i = 0;
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}
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return (i);
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}
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/*
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* Load the status. Issue get status command and wait for status available.
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*/
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static void sjcd_get_status(void)
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{
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#if defined( SJCD_TRACE )
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printk("SJCD: get_status\n");
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#endif
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sjcd_send_cmd(SCMD_GET_STATUS);
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sjcd_receive_status();
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}
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/*
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* Check the drive if the disk is changed. Should be revised.
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*/
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static int sjcd_disk_change(struct gendisk *disk)
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{
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#if 0
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printk("SJCD: sjcd_disk_change(%s)\n", disk->disk_name);
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#endif
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if (!sjcd_command_is_in_progress)
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sjcd_get_status();
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return (sjcd_status_valid ? sjcd_media_is_changed : 0);
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}
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/*
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* Read the table of contents (TOC) and TOC header if necessary.
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* We assume that the drive contains no more than 99 toc entries.
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*/
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static struct sjcd_hw_disk_info sjcd_table_of_contents[SJCD_MAX_TRACKS];
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static unsigned char sjcd_first_track_no, sjcd_last_track_no;
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#define sjcd_disk_length sjcd_table_of_contents[0].un.track_msf
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static int sjcd_update_toc(void)
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{
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struct sjcd_hw_disk_info info;
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int i;
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#if defined( SJCD_TRACE )
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printk("SJCD: update toc:\n");
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#endif
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/*
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* check to see if we need to do anything
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*/
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if (sjcd_toc_uptodate)
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return (0);
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/*
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* Get the TOC start information.
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*/
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sjcd_send_1_cmd(SCMD_GET_DISK_INFO, SCMD_GET_1_TRACK);
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sjcd_receive_status();
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if (!sjcd_status_valid) {
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printk("SJCD: cannot load status.\n");
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return (-1);
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}
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if (!sjcd_media_is_available) {
|
|
printk("SJCD: no disk in drive\n");
|
|
return (-1);
|
|
}
|
|
|
|
if (!sjcd_command_failed) {
|
|
if (sjcd_load_response(&info, sizeof(info)) != 0) {
|
|
printk
|
|
("SJCD: cannot load response about TOC start.\n");
|
|
return (-1);
|
|
}
|
|
sjcd_first_track_no = bcd2bin(info.un.track_no);
|
|
} else {
|
|
printk("SJCD: get first failed\n");
|
|
return (-1);
|
|
}
|
|
#if defined( SJCD_TRACE )
|
|
printk("SJCD: TOC start 0x%02x ", sjcd_first_track_no);
|
|
#endif
|
|
/*
|
|
* Get the TOC finish information.
|
|
*/
|
|
sjcd_send_1_cmd(SCMD_GET_DISK_INFO, SCMD_GET_L_TRACK);
|
|
sjcd_receive_status();
|
|
|
|
if (!sjcd_status_valid) {
|
|
printk("SJCD: cannot load status.\n");
|
|
return (-1);
|
|
}
|
|
|
|
if (!sjcd_media_is_available) {
|
|
printk("SJCD: no disk in drive\n");
|
|
return (-1);
|
|
}
|
|
|
|
if (!sjcd_command_failed) {
|
|
if (sjcd_load_response(&info, sizeof(info)) != 0) {
|
|
printk
|
|
("SJCD: cannot load response about TOC finish.\n");
|
|
return (-1);
|
|
}
|
|
sjcd_last_track_no = bcd2bin(info.un.track_no);
|
|
} else {
|
|
printk("SJCD: get last failed\n");
|
|
return (-1);
|
|
}
|
|
#if defined( SJCD_TRACE )
|
|
printk("SJCD: TOC finish 0x%02x ", sjcd_last_track_no);
|
|
#endif
|
|
for (i = sjcd_first_track_no; i <= sjcd_last_track_no; i++) {
|
|
/*
|
|
* Get the first track information.
|
|
*/
|
|
sjcd_send_1_cmd(SCMD_GET_DISK_INFO, bin2bcd(i));
|
|
sjcd_receive_status();
|
|
|
|
if (!sjcd_status_valid) {
|
|
printk("SJCD: cannot load status.\n");
|
|
return (-1);
|
|
}
|
|
|
|
if (!sjcd_media_is_available) {
|
|
printk("SJCD: no disk in drive\n");
|
|
return (-1);
|
|
}
|
|
|
|
if (!sjcd_command_failed) {
|
|
if (sjcd_load_response(&sjcd_table_of_contents[i],
|
|
sizeof(struct
|
|
sjcd_hw_disk_info))
|
|
!= 0) {
|
|
printk
|
|
("SJCD: cannot load info for %d track\n",
|
|
i);
|
|
return (-1);
|
|
}
|
|
} else {
|
|
printk("SJCD: get info %d failed\n", i);
|
|
return (-1);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Get the disk length info.
|
|
*/
|
|
sjcd_send_1_cmd(SCMD_GET_DISK_INFO, SCMD_GET_D_SIZE);
|
|
sjcd_receive_status();
|
|
|
|
if (!sjcd_status_valid) {
|
|
printk("SJCD: cannot load status.\n");
|
|
return (-1);
|
|
}
|
|
|
|
if (!sjcd_media_is_available) {
|
|
printk("SJCD: no disk in drive\n");
|
|
return (-1);
|
|
}
|
|
|
|
if (!sjcd_command_failed) {
|
|
if (sjcd_load_response(&info, sizeof(info)) != 0) {
|
|
printk
|
|
("SJCD: cannot load response about disk size.\n");
|
|
return (-1);
|
|
}
|
|
sjcd_disk_length.min = info.un.track_msf.min;
|
|
sjcd_disk_length.sec = info.un.track_msf.sec;
|
|
sjcd_disk_length.frame = info.un.track_msf.frame;
|
|
} else {
|
|
printk("SJCD: get size failed\n");
|
|
return (1);
|
|
}
|
|
#if defined( SJCD_TRACE )
|
|
printk("SJCD: (%02x:%02x.%02x)\n", sjcd_disk_length.min,
|
|
sjcd_disk_length.sec, sjcd_disk_length.frame);
|
|
#endif
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Load subchannel information.
|
|
*/
|
|
static int sjcd_get_q_info(struct sjcd_hw_qinfo *qp)
|
|
{
|
|
int s;
|
|
#if defined( SJCD_TRACE )
|
|
printk("SJCD: load sub q\n");
|
|
#endif
|
|
sjcd_send_cmd(SCMD_GET_QINFO);
|
|
s = sjcd_receive_status();
|
|
if (s < 0 || sjcd_command_failed || !sjcd_status_valid) {
|
|
sjcd_send_cmd(0xF2);
|
|
s = sjcd_receive_status();
|
|
if (s < 0 || sjcd_command_failed || !sjcd_status_valid)
|
|
return (-1);
|
|
sjcd_send_cmd(SCMD_GET_QINFO);
|
|
s = sjcd_receive_status();
|
|
if (s < 0 || sjcd_command_failed || !sjcd_status_valid)
|
|
return (-1);
|
|
}
|
|
if (sjcd_media_is_available)
|
|
if (sjcd_load_response(qp, sizeof(*qp)) == 0)
|
|
return (0);
|
|
return (-1);
|
|
}
|
|
|
|
/*
|
|
* Start playing from the specified position.
|
|
*/
|
|
static int sjcd_play(struct sjcd_play_msf *mp)
|
|
{
|
|
struct sjcd_play_msf msf;
|
|
|
|
/*
|
|
* Turn the device to play mode.
|
|
*/
|
|
sjcd_send_1_cmd(SCMD_SET_MODE, SCMD_MODE_PLAY);
|
|
if (sjcd_receive_status() < 0)
|
|
return (-1);
|
|
|
|
/*
|
|
* Seek to the starting point.
|
|
*/
|
|
msf.start = mp->start;
|
|
msf.end.min = msf.end.sec = msf.end.frame = 0x00;
|
|
sjcd_send_6_cmd(SCMD_SEEK, &msf);
|
|
if (sjcd_receive_status() < 0)
|
|
return (-1);
|
|
|
|
/*
|
|
* Start playing.
|
|
*/
|
|
sjcd_send_6_cmd(SCMD_PLAY, mp);
|
|
return (sjcd_receive_status());
|
|
}
|
|
|
|
/*
|
|
* Tray control functions.
|
|
*/
|
|
static int sjcd_tray_close(void)
|
|
{
|
|
#if defined( SJCD_TRACE )
|
|
printk("SJCD: tray_close\n");
|
|
#endif
|
|
sjcd_send_cmd(SCMD_CLOSE_TRAY);
|
|
return (sjcd_receive_status());
|
|
}
|
|
|
|
static int sjcd_tray_lock(void)
|
|
{
|
|
#if defined( SJCD_TRACE )
|
|
printk("SJCD: tray_lock\n");
|
|
#endif
|
|
sjcd_send_cmd(SCMD_LOCK_TRAY);
|
|
return (sjcd_receive_status());
|
|
}
|
|
|
|
static int sjcd_tray_unlock(void)
|
|
{
|
|
#if defined( SJCD_TRACE )
|
|
printk("SJCD: tray_unlock\n");
|
|
#endif
|
|
sjcd_send_cmd(SCMD_UNLOCK_TRAY);
|
|
return (sjcd_receive_status());
|
|
}
|
|
|
|
static int sjcd_tray_open(void)
|
|
{
|
|
#if defined( SJCD_TRACE )
|
|
printk("SJCD: tray_open\n");
|
|
#endif
|
|
sjcd_send_cmd(SCMD_EJECT_TRAY);
|
|
return (sjcd_receive_status());
|
|
}
|
|
|
|
/*
|
|
* Do some user commands.
|
|
*/
|
|
static int sjcd_ioctl(struct inode *ip, struct file *fp,
|
|
unsigned int cmd, unsigned long arg)
|
|
{
|
|
void __user *argp = (void __user *)arg;
|
|
#if defined( SJCD_TRACE )
|
|
printk("SJCD:ioctl\n");
|
|
#endif
|
|
|
|
sjcd_get_status();
|
|
if (!sjcd_status_valid)
|
|
return (-EIO);
|
|
if (sjcd_update_toc() < 0)
|
|
return (-EIO);
|
|
|
|
switch (cmd) {
|
|
case CDROMSTART:{
|
|
#if defined( SJCD_TRACE )
|
|
printk("SJCD: ioctl: start\n");
|
|
#endif
|
|
return (0);
|
|
}
|
|
|
|
case CDROMSTOP:{
|
|
#if defined( SJCD_TRACE )
|
|
printk("SJCD: ioctl: stop\n");
|
|
#endif
|
|
sjcd_send_cmd(SCMD_PAUSE);
|
|
(void) sjcd_receive_status();
|
|
sjcd_audio_status = CDROM_AUDIO_NO_STATUS;
|
|
return (0);
|
|
}
|
|
|
|
case CDROMPAUSE:{
|
|
struct sjcd_hw_qinfo q_info;
|
|
#if defined( SJCD_TRACE )
|
|
printk("SJCD: ioctl: pause\n");
|
|
#endif
|
|
if (sjcd_audio_status == CDROM_AUDIO_PLAY) {
|
|
sjcd_send_cmd(SCMD_PAUSE);
|
|
(void) sjcd_receive_status();
|
|
if (sjcd_get_q_info(&q_info) < 0) {
|
|
sjcd_audio_status =
|
|
CDROM_AUDIO_NO_STATUS;
|
|
} else {
|
|
sjcd_audio_status =
|
|
CDROM_AUDIO_PAUSED;
|
|
sjcd_playing.start = q_info.abs;
|
|
}
|
|
return (0);
|
|
} else
|
|
return (-EINVAL);
|
|
}
|
|
|
|
case CDROMRESUME:{
|
|
#if defined( SJCD_TRACE )
|
|
printk("SJCD: ioctl: resume\n");
|
|
#endif
|
|
if (sjcd_audio_status == CDROM_AUDIO_PAUSED) {
|
|
/*
|
|
* continue play starting at saved location
|
|
*/
|
|
if (sjcd_play(&sjcd_playing) < 0) {
|
|
sjcd_audio_status =
|
|
CDROM_AUDIO_ERROR;
|
|
return (-EIO);
|
|
} else {
|
|
sjcd_audio_status =
|
|
CDROM_AUDIO_PLAY;
|
|
return (0);
|
|
}
|
|
} else
|
|
return (-EINVAL);
|
|
}
|
|
|
|
case CDROMPLAYTRKIND:{
|
|
struct cdrom_ti ti;
|
|
int s = -EFAULT;
|
|
#if defined( SJCD_TRACE )
|
|
printk("SJCD: ioctl: playtrkind\n");
|
|
#endif
|
|
if (!copy_from_user(&ti, argp, sizeof(ti))) {
|
|
s = 0;
|
|
if (ti.cdti_trk0 < sjcd_first_track_no)
|
|
return (-EINVAL);
|
|
if (ti.cdti_trk1 > sjcd_last_track_no)
|
|
ti.cdti_trk1 = sjcd_last_track_no;
|
|
if (ti.cdti_trk0 > ti.cdti_trk1)
|
|
return (-EINVAL);
|
|
|
|
sjcd_playing.start =
|
|
sjcd_table_of_contents[ti.cdti_trk0].
|
|
un.track_msf;
|
|
sjcd_playing.end =
|
|
(ti.cdti_trk1 <
|
|
sjcd_last_track_no) ?
|
|
sjcd_table_of_contents[ti.cdti_trk1 +
|
|
1].un.
|
|
track_msf : sjcd_table_of_contents[0].
|
|
un.track_msf;
|
|
|
|
if (sjcd_play(&sjcd_playing) < 0) {
|
|
sjcd_audio_status =
|
|
CDROM_AUDIO_ERROR;
|
|
return (-EIO);
|
|
} else
|
|
sjcd_audio_status =
|
|
CDROM_AUDIO_PLAY;
|
|
}
|
|
return (s);
|
|
}
|
|
|
|
case CDROMPLAYMSF:{
|
|
struct cdrom_msf sjcd_msf;
|
|
int s;
|
|
#if defined( SJCD_TRACE )
|
|
printk("SJCD: ioctl: playmsf\n");
|
|
#endif
|
|
if ((s =
|
|
access_ok(VERIFY_READ, argp, sizeof(sjcd_msf))
|
|
? 0 : -EFAULT) == 0) {
|
|
if (sjcd_audio_status == CDROM_AUDIO_PLAY) {
|
|
sjcd_send_cmd(SCMD_PAUSE);
|
|
(void) sjcd_receive_status();
|
|
sjcd_audio_status =
|
|
CDROM_AUDIO_NO_STATUS;
|
|
}
|
|
|
|
if (copy_from_user(&sjcd_msf, argp,
|
|
sizeof(sjcd_msf)))
|
|
return (-EFAULT);
|
|
|
|
sjcd_playing.start.min =
|
|
bin2bcd(sjcd_msf.cdmsf_min0);
|
|
sjcd_playing.start.sec =
|
|
bin2bcd(sjcd_msf.cdmsf_sec0);
|
|
sjcd_playing.start.frame =
|
|
bin2bcd(sjcd_msf.cdmsf_frame0);
|
|
sjcd_playing.end.min =
|
|
bin2bcd(sjcd_msf.cdmsf_min1);
|
|
sjcd_playing.end.sec =
|
|
bin2bcd(sjcd_msf.cdmsf_sec1);
|
|
sjcd_playing.end.frame =
|
|
bin2bcd(sjcd_msf.cdmsf_frame1);
|
|
|
|
if (sjcd_play(&sjcd_playing) < 0) {
|
|
sjcd_audio_status =
|
|
CDROM_AUDIO_ERROR;
|
|
return (-EIO);
|
|
} else
|
|
sjcd_audio_status =
|
|
CDROM_AUDIO_PLAY;
|
|
}
|
|
return (s);
|
|
}
|
|
|
|
case CDROMREADTOCHDR:{
|
|
struct cdrom_tochdr toc_header;
|
|
#if defined (SJCD_TRACE )
|
|
printk("SJCD: ioctl: readtocheader\n");
|
|
#endif
|
|
toc_header.cdth_trk0 = sjcd_first_track_no;
|
|
toc_header.cdth_trk1 = sjcd_last_track_no;
|
|
if (copy_to_user(argp, &toc_header,
|
|
sizeof(toc_header)))
|
|
return -EFAULT;
|
|
return 0;
|
|
}
|
|
|
|
case CDROMREADTOCENTRY:{
|
|
struct cdrom_tocentry toc_entry;
|
|
int s;
|
|
#if defined( SJCD_TRACE )
|
|
printk("SJCD: ioctl: readtocentry\n");
|
|
#endif
|
|
if ((s =
|
|
access_ok(VERIFY_WRITE, argp, sizeof(toc_entry))
|
|
? 0 : -EFAULT) == 0) {
|
|
struct sjcd_hw_disk_info *tp;
|
|
|
|
if (copy_from_user(&toc_entry, argp,
|
|
sizeof(toc_entry)))
|
|
return (-EFAULT);
|
|
if (toc_entry.cdte_track == CDROM_LEADOUT)
|
|
tp = &sjcd_table_of_contents[0];
|
|
else if (toc_entry.cdte_track <
|
|
sjcd_first_track_no)
|
|
return (-EINVAL);
|
|
else if (toc_entry.cdte_track >
|
|
sjcd_last_track_no)
|
|
return (-EINVAL);
|
|
else
|
|
tp = &sjcd_table_of_contents
|
|
[toc_entry.cdte_track];
|
|
|
|
toc_entry.cdte_adr =
|
|
tp->track_control & 0x0F;
|
|
toc_entry.cdte_ctrl =
|
|
tp->track_control >> 4;
|
|
|
|
switch (toc_entry.cdte_format) {
|
|
case CDROM_LBA:
|
|
toc_entry.cdte_addr.lba =
|
|
msf2hsg(&(tp->un.track_msf));
|
|
break;
|
|
case CDROM_MSF:
|
|
toc_entry.cdte_addr.msf.minute =
|
|
bcd2bin(tp->un.track_msf.min);
|
|
toc_entry.cdte_addr.msf.second =
|
|
bcd2bin(tp->un.track_msf.sec);
|
|
toc_entry.cdte_addr.msf.frame =
|
|
bcd2bin(tp->un.track_msf.
|
|
frame);
|
|
break;
|
|
default:
|
|
return (-EINVAL);
|
|
}
|
|
if (copy_to_user(argp, &toc_entry,
|
|
sizeof(toc_entry)))
|
|
s = -EFAULT;
|
|
}
|
|
return (s);
|
|
}
|
|
|
|
case CDROMSUBCHNL:{
|
|
struct cdrom_subchnl subchnl;
|
|
int s;
|
|
#if defined( SJCD_TRACE )
|
|
printk("SJCD: ioctl: subchnl\n");
|
|
#endif
|
|
if ((s =
|
|
access_ok(VERIFY_WRITE, argp, sizeof(subchnl))
|
|
? 0 : -EFAULT) == 0) {
|
|
struct sjcd_hw_qinfo q_info;
|
|
|
|
if (copy_from_user(&subchnl, argp,
|
|
sizeof(subchnl)))
|
|
return (-EFAULT);
|
|
|
|
if (sjcd_get_q_info(&q_info) < 0)
|
|
return (-EIO);
|
|
|
|
subchnl.cdsc_audiostatus =
|
|
sjcd_audio_status;
|
|
subchnl.cdsc_adr =
|
|
q_info.track_control & 0x0F;
|
|
subchnl.cdsc_ctrl =
|
|
q_info.track_control >> 4;
|
|
subchnl.cdsc_trk =
|
|
bcd2bin(q_info.track_no);
|
|
subchnl.cdsc_ind = bcd2bin(q_info.x);
|
|
|
|
switch (subchnl.cdsc_format) {
|
|
case CDROM_LBA:
|
|
subchnl.cdsc_absaddr.lba =
|
|
msf2hsg(&(q_info.abs));
|
|
subchnl.cdsc_reladdr.lba =
|
|
msf2hsg(&(q_info.rel));
|
|
break;
|
|
case CDROM_MSF:
|
|
subchnl.cdsc_absaddr.msf.minute =
|
|
bcd2bin(q_info.abs.min);
|
|
subchnl.cdsc_absaddr.msf.second =
|
|
bcd2bin(q_info.abs.sec);
|
|
subchnl.cdsc_absaddr.msf.frame =
|
|
bcd2bin(q_info.abs.frame);
|
|
subchnl.cdsc_reladdr.msf.minute =
|
|
bcd2bin(q_info.rel.min);
|
|
subchnl.cdsc_reladdr.msf.second =
|
|
bcd2bin(q_info.rel.sec);
|
|
subchnl.cdsc_reladdr.msf.frame =
|
|
bcd2bin(q_info.rel.frame);
|
|
break;
|
|
default:
|
|
return (-EINVAL);
|
|
}
|
|
if (copy_to_user(argp, &subchnl,
|
|
sizeof(subchnl)))
|
|
s = -EFAULT;
|
|
}
|
|
return (s);
|
|
}
|
|
|
|
case CDROMVOLCTRL:{
|
|
struct cdrom_volctrl vol_ctrl;
|
|
int s;
|
|
#if defined( SJCD_TRACE )
|
|
printk("SJCD: ioctl: volctrl\n");
|
|
#endif
|
|
if ((s =
|
|
access_ok(VERIFY_READ, argp, sizeof(vol_ctrl))
|
|
? 0 : -EFAULT) == 0) {
|
|
unsigned char dummy[4];
|
|
|
|
if (copy_from_user(&vol_ctrl, argp,
|
|
sizeof(vol_ctrl)))
|
|
return (-EFAULT);
|
|
sjcd_send_4_cmd(SCMD_SET_VOLUME,
|
|
vol_ctrl.channel0, 0xFF,
|
|
vol_ctrl.channel1, 0xFF);
|
|
if (sjcd_receive_status() < 0)
|
|
return (-EIO);
|
|
(void) sjcd_load_response(dummy, 4);
|
|
}
|
|
return (s);
|
|
}
|
|
|
|
case CDROMEJECT:{
|
|
#if defined( SJCD_TRACE )
|
|
printk("SJCD: ioctl: eject\n");
|
|
#endif
|
|
if (!sjcd_command_is_in_progress) {
|
|
sjcd_tray_unlock();
|
|
sjcd_send_cmd(SCMD_EJECT_TRAY);
|
|
(void) sjcd_receive_status();
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
#if defined( SJCD_GATHER_STAT )
|
|
case 0xABCD:{
|
|
#if defined( SJCD_TRACE )
|
|
printk("SJCD: ioctl: statistic\n");
|
|
#endif
|
|
if (copy_to_user(argp, &statistic, sizeof(statistic)))
|
|
return -EFAULT;
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
default:
|
|
return (-EINVAL);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Invalidate internal buffers of the driver.
|
|
*/
|
|
static void sjcd_invalidate_buffers(void)
|
|
{
|
|
int i;
|
|
for (i = 0; i < SJCD_BUF_SIZ; sjcd_buf_bn[i++] = -1);
|
|
sjcd_buf_out = -1;
|
|
}
|
|
|
|
/*
|
|
* Take care of the different block sizes between cdrom and Linux.
|
|
* When Linux gets variable block sizes this will probably go away.
|
|
*/
|
|
|
|
static int current_valid(void)
|
|
{
|
|
return CURRENT &&
|
|
CURRENT->cmd == READ &&
|
|
CURRENT->sector != -1;
|
|
}
|
|
|
|
static void sjcd_transfer(void)
|
|
{
|
|
#if defined( SJCD_TRACE )
|
|
printk("SJCD: transfer:\n");
|
|
#endif
|
|
if (current_valid()) {
|
|
while (CURRENT->nr_sectors) {
|
|
int i, bn = CURRENT->sector / 4;
|
|
for (i = 0;
|
|
i < SJCD_BUF_SIZ && sjcd_buf_bn[i] != bn;
|
|
i++);
|
|
if (i < SJCD_BUF_SIZ) {
|
|
int offs =
|
|
(i * 4 + (CURRENT->sector & 3)) * 512;
|
|
int nr_sectors = 4 - (CURRENT->sector & 3);
|
|
if (sjcd_buf_out != i) {
|
|
sjcd_buf_out = i;
|
|
if (sjcd_buf_bn[i] != bn) {
|
|
sjcd_buf_out = -1;
|
|
continue;
|
|
}
|
|
}
|
|
if (nr_sectors > CURRENT->nr_sectors)
|
|
nr_sectors = CURRENT->nr_sectors;
|
|
#if defined( SJCD_TRACE )
|
|
printk("SJCD: copy out\n");
|
|
#endif
|
|
memcpy(CURRENT->buffer, sjcd_buf + offs,
|
|
nr_sectors * 512);
|
|
CURRENT->nr_sectors -= nr_sectors;
|
|
CURRENT->sector += nr_sectors;
|
|
CURRENT->buffer += nr_sectors * 512;
|
|
} else {
|
|
sjcd_buf_out = -1;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
#if defined( SJCD_TRACE )
|
|
printk("SJCD: transfer: done\n");
|
|
#endif
|
|
}
|
|
|
|
static void sjcd_poll(void)
|
|
{
|
|
#if defined( SJCD_GATHER_STAT )
|
|
/*
|
|
* Update total number of ticks.
|
|
*/
|
|
statistic.ticks++;
|
|
statistic.tticks[sjcd_transfer_state]++;
|
|
#endif
|
|
|
|
ReSwitch:switch (sjcd_transfer_state) {
|
|
|
|
case SJCD_S_IDLE:{
|
|
#if defined( SJCD_GATHER_STAT )
|
|
statistic.idle_ticks++;
|
|
#endif
|
|
#if defined( SJCD_TRACE )
|
|
printk("SJCD_S_IDLE\n");
|
|
#endif
|
|
return;
|
|
}
|
|
|
|
case SJCD_S_START:{
|
|
#if defined( SJCD_GATHER_STAT )
|
|
statistic.start_ticks++;
|
|
#endif
|
|
sjcd_send_cmd(SCMD_GET_STATUS);
|
|
sjcd_transfer_state =
|
|
sjcd_mode ==
|
|
SCMD_MODE_COOKED ? SJCD_S_READ : SJCD_S_MODE;
|
|
sjcd_transfer_timeout = 500;
|
|
#if defined( SJCD_TRACE )
|
|
printk("SJCD_S_START: goto SJCD_S_%s mode\n",
|
|
sjcd_transfer_state ==
|
|
SJCD_S_READ ? "READ" : "MODE");
|
|
#endif
|
|
break;
|
|
}
|
|
|
|
case SJCD_S_MODE:{
|
|
if (sjcd_check_status()) {
|
|
/*
|
|
* Previous command is completed.
|
|
*/
|
|
if (!sjcd_status_valid
|
|
|| sjcd_command_failed) {
|
|
#if defined( SJCD_TRACE )
|
|
printk
|
|
("SJCD_S_MODE: pre-cmd failed: goto to SJCD_S_STOP mode\n");
|
|
#endif
|
|
sjcd_transfer_state = SJCD_S_STOP;
|
|
goto ReSwitch;
|
|
}
|
|
|
|
sjcd_mode = 0; /* unknown mode; should not be valid when failed */
|
|
sjcd_send_1_cmd(SCMD_SET_MODE,
|
|
SCMD_MODE_COOKED);
|
|
sjcd_transfer_state = SJCD_S_READ;
|
|
sjcd_transfer_timeout = 1000;
|
|
#if defined( SJCD_TRACE )
|
|
printk
|
|
("SJCD_S_MODE: goto SJCD_S_READ mode\n");
|
|
#endif
|
|
}
|
|
#if defined( SJCD_GATHER_STAT )
|
|
else
|
|
statistic.mode_ticks++;
|
|
#endif
|
|
break;
|
|
}
|
|
|
|
case SJCD_S_READ:{
|
|
if (sjcd_status_valid ? 1 : sjcd_check_status()) {
|
|
/*
|
|
* Previous command is completed.
|
|
*/
|
|
if (!sjcd_status_valid
|
|
|| sjcd_command_failed) {
|
|
#if defined( SJCD_TRACE )
|
|
printk
|
|
("SJCD_S_READ: pre-cmd failed: goto to SJCD_S_STOP mode\n");
|
|
#endif
|
|
sjcd_transfer_state = SJCD_S_STOP;
|
|
goto ReSwitch;
|
|
}
|
|
if (!sjcd_media_is_available) {
|
|
#if defined( SJCD_TRACE )
|
|
printk
|
|
("SJCD_S_READ: no disk: goto to SJCD_S_STOP mode\n");
|
|
#endif
|
|
sjcd_transfer_state = SJCD_S_STOP;
|
|
goto ReSwitch;
|
|
}
|
|
if (sjcd_mode != SCMD_MODE_COOKED) {
|
|
/*
|
|
* We seem to come from set mode. So discard one byte of result.
|
|
*/
|
|
if (sjcd_load_response
|
|
(&sjcd_mode, 1) != 0) {
|
|
#if defined( SJCD_TRACE )
|
|
printk
|
|
("SJCD_S_READ: load failed: goto to SJCD_S_STOP mode\n");
|
|
#endif
|
|
sjcd_transfer_state =
|
|
SJCD_S_STOP;
|
|
goto ReSwitch;
|
|
}
|
|
if (sjcd_mode != SCMD_MODE_COOKED) {
|
|
#if defined( SJCD_TRACE )
|
|
printk
|
|
("SJCD_S_READ: mode failed: goto to SJCD_S_STOP mode\n");
|
|
#endif
|
|
sjcd_transfer_state =
|
|
SJCD_S_STOP;
|
|
goto ReSwitch;
|
|
}
|
|
}
|
|
|
|
if (current_valid()) {
|
|
struct sjcd_play_msf msf;
|
|
|
|
sjcd_next_bn = CURRENT->sector / 4;
|
|
hsg2msf(sjcd_next_bn, &msf.start);
|
|
msf.end.min = 0;
|
|
msf.end.sec = 0;
|
|
msf.end.frame = sjcd_read_count =
|
|
SJCD_BUF_SIZ;
|
|
#if defined( SJCD_TRACE )
|
|
printk
|
|
("SJCD: ---reading msf-address %x:%x:%x %x:%x:%x\n",
|
|
msf.start.min, msf.start.sec,
|
|
msf.start.frame, msf.end.min,
|
|
msf.end.sec, msf.end.frame);
|
|
printk
|
|
("sjcd_next_bn:%x buf_in:%x buf_out:%x buf_bn:%x\n",
|
|
sjcd_next_bn, sjcd_buf_in,
|
|
sjcd_buf_out,
|
|
sjcd_buf_bn[sjcd_buf_in]);
|
|
#endif
|
|
sjcd_send_6_cmd(SCMD_DATA_READ,
|
|
&msf);
|
|
sjcd_transfer_state = SJCD_S_DATA;
|
|
sjcd_transfer_timeout = 500;
|
|
#if defined( SJCD_TRACE )
|
|
printk
|
|
("SJCD_S_READ: go to SJCD_S_DATA mode\n");
|
|
#endif
|
|
} else {
|
|
#if defined( SJCD_TRACE )
|
|
printk
|
|
("SJCD_S_READ: nothing to read: go to SJCD_S_STOP mode\n");
|
|
#endif
|
|
sjcd_transfer_state = SJCD_S_STOP;
|
|
goto ReSwitch;
|
|
}
|
|
}
|
|
#if defined( SJCD_GATHER_STAT )
|
|
else
|
|
statistic.read_ticks++;
|
|
#endif
|
|
break;
|
|
}
|
|
|
|
case SJCD_S_DATA:{
|
|
unsigned char stat;
|
|
|
|
sjcd_s_data:stat =
|
|
inb(SJCDPORT
|
|
(1));
|
|
#if defined( SJCD_TRACE )
|
|
printk("SJCD_S_DATA: status = 0x%02x\n", stat);
|
|
#endif
|
|
if (SJCD_STATUS_AVAILABLE(stat)) {
|
|
/*
|
|
* No data is waiting for us in the drive buffer. Status of operation
|
|
* completion is available. Read and parse it.
|
|
*/
|
|
sjcd_load_status();
|
|
|
|
if (!sjcd_status_valid
|
|
|| sjcd_command_failed) {
|
|
#if defined( SJCD_TRACE )
|
|
printk
|
|
("SJCD: read block %d failed, maybe audio disk? Giving up\n",
|
|
sjcd_next_bn);
|
|
#endif
|
|
if (current_valid())
|
|
end_request(CURRENT, 0);
|
|
#if defined( SJCD_TRACE )
|
|
printk
|
|
("SJCD_S_DATA: pre-cmd failed: go to SJCD_S_STOP mode\n");
|
|
#endif
|
|
sjcd_transfer_state = SJCD_S_STOP;
|
|
goto ReSwitch;
|
|
}
|
|
|
|
if (!sjcd_media_is_available) {
|
|
printk
|
|
("SJCD_S_DATA: no disk: go to SJCD_S_STOP mode\n");
|
|
sjcd_transfer_state = SJCD_S_STOP;
|
|
goto ReSwitch;
|
|
}
|
|
|
|
sjcd_transfer_state = SJCD_S_READ;
|
|
goto ReSwitch;
|
|
} else if (SJCD_DATA_AVAILABLE(stat)) {
|
|
/*
|
|
* One frame is read into device buffer. We must copy it to our memory.
|
|
* Otherwise cdrom hangs up. Check to see if we have something to copy
|
|
* to.
|
|
*/
|
|
if (!current_valid()
|
|
&& sjcd_buf_in == sjcd_buf_out) {
|
|
#if defined( SJCD_TRACE )
|
|
printk
|
|
("SJCD_S_DATA: nothing to read: go to SJCD_S_STOP mode\n");
|
|
printk
|
|
(" ... all the date would be discarded\n");
|
|
#endif
|
|
sjcd_transfer_state = SJCD_S_STOP;
|
|
goto ReSwitch;
|
|
}
|
|
|
|
/*
|
|
* Everything seems to be OK. Just read the frame and recalculate
|
|
* indices.
|
|
*/
|
|
sjcd_buf_bn[sjcd_buf_in] = -1; /* ??? */
|
|
insb(SJCDPORT(2),
|
|
sjcd_buf + 2048 * sjcd_buf_in, 2048);
|
|
#if defined( SJCD_TRACE )
|
|
printk
|
|
("SJCD_S_DATA: next_bn=%d, buf_in=%d, buf_out=%d, buf_bn=%d\n",
|
|
sjcd_next_bn, sjcd_buf_in,
|
|
sjcd_buf_out,
|
|
sjcd_buf_bn[sjcd_buf_in]);
|
|
#endif
|
|
sjcd_buf_bn[sjcd_buf_in] = sjcd_next_bn++;
|
|
if (sjcd_buf_out == -1)
|
|
sjcd_buf_out = sjcd_buf_in;
|
|
if (++sjcd_buf_in == SJCD_BUF_SIZ)
|
|
sjcd_buf_in = 0;
|
|
|
|
/*
|
|
* Only one frame is ready at time. So we should turn over to wait for
|
|
* another frame. If we need that, of course.
|
|
*/
|
|
if (--sjcd_read_count == 0) {
|
|
/*
|
|
* OK, request seems to be precessed. Continue transferring...
|
|
*/
|
|
if (!sjcd_transfer_is_active) {
|
|
while (current_valid()) {
|
|
/*
|
|
* Continue transferring.
|
|
*/
|
|
sjcd_transfer();
|
|
if (CURRENT->
|
|
nr_sectors ==
|
|
0)
|
|
end_request
|
|
(CURRENT, 1);
|
|
else
|
|
break;
|
|
}
|
|
}
|
|
if (current_valid() &&
|
|
(CURRENT->sector / 4 <
|
|
sjcd_next_bn
|
|
|| CURRENT->sector / 4 >
|
|
sjcd_next_bn +
|
|
SJCD_BUF_SIZ)) {
|
|
#if defined( SJCD_TRACE )
|
|
printk
|
|
("SJCD_S_DATA: can't read: go to SJCD_S_STOP mode\n");
|
|
#endif
|
|
sjcd_transfer_state =
|
|
SJCD_S_STOP;
|
|
goto ReSwitch;
|
|
}
|
|
}
|
|
/*
|
|
* Now we should turn around rather than wait for while.
|
|
*/
|
|
goto sjcd_s_data;
|
|
}
|
|
#if defined( SJCD_GATHER_STAT )
|
|
else
|
|
statistic.data_ticks++;
|
|
#endif
|
|
break;
|
|
}
|
|
|
|
case SJCD_S_STOP:{
|
|
sjcd_read_count = 0;
|
|
sjcd_send_cmd(SCMD_STOP);
|
|
sjcd_transfer_state = SJCD_S_STOPPING;
|
|
sjcd_transfer_timeout = 500;
|
|
#if defined( SJCD_GATHER_STAT )
|
|
statistic.stop_ticks++;
|
|
#endif
|
|
break;
|
|
}
|
|
|
|
case SJCD_S_STOPPING:{
|
|
unsigned char stat;
|
|
|
|
stat = inb(SJCDPORT(1));
|
|
#if defined( SJCD_TRACE )
|
|
printk("SJCD_S_STOP: status = 0x%02x\n", stat);
|
|
#endif
|
|
if (SJCD_DATA_AVAILABLE(stat)) {
|
|
int i;
|
|
#if defined( SJCD_TRACE )
|
|
printk("SJCD_S_STOP: discard data\n");
|
|
#endif
|
|
/*
|
|
* Discard all the data from the pipe. Foolish method.
|
|
*/
|
|
for (i = 2048; i--;
|
|
(void) inb(SJCDPORT(2)));
|
|
sjcd_transfer_timeout = 500;
|
|
} else if (SJCD_STATUS_AVAILABLE(stat)) {
|
|
sjcd_load_status();
|
|
if (sjcd_status_valid
|
|
&& sjcd_media_is_changed) {
|
|
sjcd_toc_uptodate = 0;
|
|
sjcd_invalidate_buffers();
|
|
}
|
|
if (current_valid()) {
|
|
if (sjcd_status_valid)
|
|
sjcd_transfer_state =
|
|
SJCD_S_READ;
|
|
else
|
|
sjcd_transfer_state =
|
|
SJCD_S_START;
|
|
} else
|
|
sjcd_transfer_state = SJCD_S_IDLE;
|
|
goto ReSwitch;
|
|
}
|
|
#if defined( SJCD_GATHER_STAT )
|
|
else
|
|
statistic.stopping_ticks++;
|
|
#endif
|
|
break;
|
|
}
|
|
|
|
default:
|
|
printk("SJCD: poll: invalid state %d\n",
|
|
sjcd_transfer_state);
|
|
return;
|
|
}
|
|
|
|
if (--sjcd_transfer_timeout == 0) {
|
|
printk("SJCD: timeout in state %d\n", sjcd_transfer_state);
|
|
while (current_valid())
|
|
end_request(CURRENT, 0);
|
|
sjcd_send_cmd(SCMD_STOP);
|
|
sjcd_transfer_state = SJCD_S_IDLE;
|
|
goto ReSwitch;
|
|
}
|
|
|
|
/*
|
|
* Get back in some time. 1 should be replaced with count variable to
|
|
* avoid unnecessary testings.
|
|
*/
|
|
SJCD_SET_TIMER(sjcd_poll, 1);
|
|
}
|
|
|
|
static void do_sjcd_request(request_queue_t * q)
|
|
{
|
|
#if defined( SJCD_TRACE )
|
|
printk("SJCD: do_sjcd_request(%ld+%ld)\n",
|
|
CURRENT->sector, CURRENT->nr_sectors);
|
|
#endif
|
|
sjcd_transfer_is_active = 1;
|
|
while (current_valid()) {
|
|
sjcd_transfer();
|
|
if (CURRENT->nr_sectors == 0)
|
|
end_request(CURRENT, 1);
|
|
else {
|
|
sjcd_buf_out = -1; /* Want to read a block not in buffer */
|
|
if (sjcd_transfer_state == SJCD_S_IDLE) {
|
|
if (!sjcd_toc_uptodate) {
|
|
if (sjcd_update_toc() < 0) {
|
|
printk
|
|
("SJCD: transfer: discard\n");
|
|
while (current_valid())
|
|
end_request(CURRENT, 0);
|
|
break;
|
|
}
|
|
}
|
|
sjcd_transfer_state = SJCD_S_START;
|
|
SJCD_SET_TIMER(sjcd_poll, HZ / 100);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
sjcd_transfer_is_active = 0;
|
|
#if defined( SJCD_TRACE )
|
|
printk
|
|
("sjcd_next_bn:%x sjcd_buf_in:%x sjcd_buf_out:%x sjcd_buf_bn:%x\n",
|
|
sjcd_next_bn, sjcd_buf_in, sjcd_buf_out,
|
|
sjcd_buf_bn[sjcd_buf_in]);
|
|
printk("do_sjcd_request ends\n");
|
|
#endif
|
|
}
|
|
|
|
/*
|
|
* Open the device special file. Check disk is in.
|
|
*/
|
|
static int sjcd_open(struct inode *ip, struct file *fp)
|
|
{
|
|
/*
|
|
* Check the presence of device.
|
|
*/
|
|
if (!sjcd_present)
|
|
return (-ENXIO);
|
|
|
|
/*
|
|
* Only read operations are allowed. Really? (:-)
|
|
*/
|
|
if (fp->f_mode & 2)
|
|
return (-EROFS);
|
|
|
|
if (sjcd_open_count == 0) {
|
|
int s, sjcd_open_tries;
|
|
/* We don't know that, do we? */
|
|
/*
|
|
sjcd_audio_status = CDROM_AUDIO_NO_STATUS;
|
|
*/
|
|
sjcd_mode = 0;
|
|
sjcd_door_was_open = 0;
|
|
sjcd_transfer_state = SJCD_S_IDLE;
|
|
sjcd_invalidate_buffers();
|
|
sjcd_status_valid = 0;
|
|
|
|
/*
|
|
* Strict status checking.
|
|
*/
|
|
for (sjcd_open_tries = 4; --sjcd_open_tries;) {
|
|
if (!sjcd_status_valid)
|
|
sjcd_get_status();
|
|
if (!sjcd_status_valid) {
|
|
#if defined( SJCD_DIAGNOSTIC )
|
|
printk
|
|
("SJCD: open: timed out when check status.\n");
|
|
#endif
|
|
goto err_out;
|
|
} else if (!sjcd_media_is_available) {
|
|
#if defined( SJCD_DIAGNOSTIC )
|
|
printk("SJCD: open: no disk in drive\n");
|
|
#endif
|
|
if (!sjcd_door_closed) {
|
|
sjcd_door_was_open = 1;
|
|
#if defined( SJCD_TRACE )
|
|
printk
|
|
("SJCD: open: close the tray\n");
|
|
#endif
|
|
s = sjcd_tray_close();
|
|
if (s < 0 || !sjcd_status_valid
|
|
|| sjcd_command_failed) {
|
|
#if defined( SJCD_DIAGNOSTIC )
|
|
printk
|
|
("SJCD: open: tray close attempt failed\n");
|
|
#endif
|
|
goto err_out;
|
|
}
|
|
continue;
|
|
} else
|
|
goto err_out;
|
|
}
|
|
break;
|
|
}
|
|
s = sjcd_tray_lock();
|
|
if (s < 0 || !sjcd_status_valid || sjcd_command_failed) {
|
|
#if defined( SJCD_DIAGNOSTIC )
|
|
printk("SJCD: open: tray lock attempt failed\n");
|
|
#endif
|
|
goto err_out;
|
|
}
|
|
#if defined( SJCD_TRACE )
|
|
printk("SJCD: open: done\n");
|
|
#endif
|
|
}
|
|
|
|
++sjcd_open_count;
|
|
return (0);
|
|
|
|
err_out:
|
|
return (-EIO);
|
|
}
|
|
|
|
/*
|
|
* On close, we flush all sjcd blocks from the buffer cache.
|
|
*/
|
|
static int sjcd_release(struct inode *inode, struct file *file)
|
|
{
|
|
int s;
|
|
|
|
#if defined( SJCD_TRACE )
|
|
printk("SJCD: release\n");
|
|
#endif
|
|
if (--sjcd_open_count == 0) {
|
|
sjcd_invalidate_buffers();
|
|
s = sjcd_tray_unlock();
|
|
if (s < 0 || !sjcd_status_valid || sjcd_command_failed) {
|
|
#if defined( SJCD_DIAGNOSTIC )
|
|
printk
|
|
("SJCD: release: tray unlock attempt failed.\n");
|
|
#endif
|
|
}
|
|
if (sjcd_door_was_open) {
|
|
s = sjcd_tray_open();
|
|
if (s < 0 || !sjcd_status_valid
|
|
|| sjcd_command_failed) {
|
|
#if defined( SJCD_DIAGNOSTIC )
|
|
printk
|
|
("SJCD: release: tray unload attempt failed.\n");
|
|
#endif
|
|
}
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* A list of file operations allowed for this cdrom.
|
|
*/
|
|
static struct block_device_operations sjcd_fops = {
|
|
.owner = THIS_MODULE,
|
|
.open = sjcd_open,
|
|
.release = sjcd_release,
|
|
.ioctl = sjcd_ioctl,
|
|
.media_changed = sjcd_disk_change,
|
|
};
|
|
|
|
/*
|
|
* Following stuff is intended for initialization of the cdrom. It
|
|
* first looks for presence of device. If the device is present, it
|
|
* will be reset. Then read the version of the drive and load status.
|
|
* The version is two BCD-coded bytes.
|
|
*/
|
|
static struct {
|
|
unsigned char major, minor;
|
|
} sjcd_version;
|
|
|
|
static struct gendisk *sjcd_disk;
|
|
|
|
/*
|
|
* Test for presence of drive and initialize it. Called at boot time.
|
|
* Probe cdrom, find out version and status.
|
|
*/
|
|
static int __init sjcd_init(void)
|
|
{
|
|
int i;
|
|
|
|
printk(KERN_INFO
|
|
"SJCD: Sanyo CDR-H94A cdrom driver version %d.%d.\n",
|
|
SJCD_VERSION_MAJOR, SJCD_VERSION_MINOR);
|
|
|
|
#if defined( SJCD_TRACE )
|
|
printk("SJCD: sjcd=0x%x: ", sjcd_base);
|
|
#endif
|
|
|
|
if (register_blkdev(MAJOR_NR, "sjcd"))
|
|
return -EIO;
|
|
|
|
sjcd_queue = blk_init_queue(do_sjcd_request, &sjcd_lock);
|
|
if (!sjcd_queue)
|
|
goto out0;
|
|
|
|
blk_queue_hardsect_size(sjcd_queue, 2048);
|
|
|
|
sjcd_disk = alloc_disk(1);
|
|
if (!sjcd_disk) {
|
|
printk(KERN_ERR "SJCD: can't allocate disk");
|
|
goto out1;
|
|
}
|
|
sjcd_disk->major = MAJOR_NR,
|
|
sjcd_disk->first_minor = 0,
|
|
sjcd_disk->fops = &sjcd_fops,
|
|
sprintf(sjcd_disk->disk_name, "sjcd");
|
|
sprintf(sjcd_disk->devfs_name, "sjcd");
|
|
|
|
if (!request_region(sjcd_base, 4,"sjcd")) {
|
|
printk
|
|
("SJCD: Init failed, I/O port (%X) is already in use\n",
|
|
sjcd_base);
|
|
goto out2;
|
|
}
|
|
|
|
/*
|
|
* Check for card. Since we are booting now, we can't use standard
|
|
* wait algorithm.
|
|
*/
|
|
printk(KERN_INFO "SJCD: Resetting: ");
|
|
sjcd_send_cmd(SCMD_RESET);
|
|
for (i = 1000; i > 0 && !sjcd_status_valid; --i) {
|
|
unsigned long timer;
|
|
|
|
/*
|
|
* Wait 10ms approx.
|
|
*/
|
|
for (timer = jiffies; time_before_eq(jiffies, timer););
|
|
if ((i % 100) == 0)
|
|
printk(".");
|
|
(void) sjcd_check_status();
|
|
}
|
|
if (i == 0 || sjcd_command_failed) {
|
|
printk(" reset failed, no drive found.\n");
|
|
goto out3;
|
|
} else
|
|
printk("\n");
|
|
|
|
/*
|
|
* Get and print out cdrom version.
|
|
*/
|
|
printk(KERN_INFO "SJCD: Getting version: ");
|
|
sjcd_send_cmd(SCMD_GET_VERSION);
|
|
for (i = 1000; i > 0 && !sjcd_status_valid; --i) {
|
|
unsigned long timer;
|
|
|
|
/*
|
|
* Wait 10ms approx.
|
|
*/
|
|
for (timer = jiffies; time_before_eq(jiffies, timer););
|
|
if ((i % 100) == 0)
|
|
printk(".");
|
|
(void) sjcd_check_status();
|
|
}
|
|
if (i == 0 || sjcd_command_failed) {
|
|
printk(" get version failed, no drive found.\n");
|
|
goto out3;
|
|
}
|
|
|
|
if (sjcd_load_response(&sjcd_version, sizeof(sjcd_version)) == 0) {
|
|
printk(" %1x.%02x\n", (int) sjcd_version.major,
|
|
(int) sjcd_version.minor);
|
|
} else {
|
|
printk(" read version failed, no drive found.\n");
|
|
goto out3;
|
|
}
|
|
|
|
/*
|
|
* Check and print out the tray state. (if it is needed?).
|
|
*/
|
|
if (!sjcd_status_valid) {
|
|
printk(KERN_INFO "SJCD: Getting status: ");
|
|
sjcd_send_cmd(SCMD_GET_STATUS);
|
|
for (i = 1000; i > 0 && !sjcd_status_valid; --i) {
|
|
unsigned long timer;
|
|
|
|
/*
|
|
* Wait 10ms approx.
|
|
*/
|
|
for (timer = jiffies;
|
|
time_before_eq(jiffies, timer););
|
|
if ((i % 100) == 0)
|
|
printk(".");
|
|
(void) sjcd_check_status();
|
|
}
|
|
if (i == 0 || sjcd_command_failed) {
|
|
printk(" get status failed, no drive found.\n");
|
|
goto out3;
|
|
} else
|
|
printk("\n");
|
|
}
|
|
|
|
printk(KERN_INFO "SJCD: Status: port=0x%x.\n", sjcd_base);
|
|
sjcd_disk->queue = sjcd_queue;
|
|
add_disk(sjcd_disk);
|
|
|
|
sjcd_present++;
|
|
return (0);
|
|
out3:
|
|
release_region(sjcd_base, 4);
|
|
out2:
|
|
put_disk(sjcd_disk);
|
|
out1:
|
|
blk_cleanup_queue(sjcd_queue);
|
|
out0:
|
|
if ((unregister_blkdev(MAJOR_NR, "sjcd") == -EINVAL))
|
|
printk("SJCD: cannot unregister device.\n");
|
|
return (-EIO);
|
|
}
|
|
|
|
static void __exit sjcd_exit(void)
|
|
{
|
|
del_gendisk(sjcd_disk);
|
|
put_disk(sjcd_disk);
|
|
release_region(sjcd_base, 4);
|
|
blk_cleanup_queue(sjcd_queue);
|
|
if ((unregister_blkdev(MAJOR_NR, "sjcd") == -EINVAL))
|
|
printk("SJCD: cannot unregister device.\n");
|
|
printk(KERN_INFO "SJCD: module: removed.\n");
|
|
}
|
|
|
|
module_init(sjcd_init);
|
|
module_exit(sjcd_exit);
|
|
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_ALIAS_BLOCKDEV_MAJOR(SANYO_CDROM_MAJOR);
|