Linux-2.6.12-rc2
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!
diff --git a/drivers/cdrom/cdu31a.c b/drivers/cdrom/cdu31a.c
new file mode 100644
index 0000000..647a71b
--- /dev/null
+++ b/drivers/cdrom/cdu31a.c
@@ -0,0 +1,3248 @@
+/*
+* Sony CDU-31A CDROM interface device driver.
+*
+* Corey Minyard (minyard@wf-rch.cirr.com)
+*
+* Colossians 3:17
+*
+* See Documentation/cdrom/cdu31a for additional details about this driver.
+*
+* The Sony interface device driver handles Sony interface CDROM
+* drives and provides a complete block-level interface as well as an
+* ioctl() interface compatible with the Sun (as specified in
+* include/linux/cdrom.h). With this interface, CDROMs can be
+* accessed and standard audio CDs can be played back normally.
+*
+* WARNING - All autoprobes have been removed from the driver.
+* You MUST configure the CDU31A via a LILO config
+* at boot time or in lilo.conf. I have the
+* following in my lilo.conf:
+*
+* append="cdu31a=0x1f88,0,PAS"
+*
+* The first number is the I/O base address of the
+* card. The second is the interrupt (0 means none).
+ * The third should be "PAS" if on a Pro-Audio
+ * spectrum, or nothing if on something else.
+ *
+ * This interface is (unfortunately) 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 (time_before(jiffies, retry_count) && (! <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
+ * asynchronous events from the drive informing the driver that a disk
+ * has been inserted, removed, etc.
+ *
+ * NEWS FLASH - The driver now supports interrupts but they are
+ * turned off by default. Use of interrupts is highly encouraged, it
+ * cuts CPU usage down to a reasonable level. I had DMA in for a while
+ * but PC DMA is just too slow. Better to just insb() it.
+ *
+ * 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.
+ *
+ * DRIVER SPECIAL FEATURES
+ * -----------------------
+ *
+ * This section describes features beyond the normal audio and CD-ROM
+ * functions of the drive.
+ *
+ * XA compatibility
+ *
+ * The driver should support XA disks for both the CDU31A and CDU33A.
+ * It does this transparently, the using program doesn't need to set it.
+ *
+ * Multi-Session
+ *
+ * A multi-session disk looks just like a normal disk to the user.
+ * Just mount one normally, and all the data should be there.
+ * A special thanks to Koen for help with this!
+ *
+ * Raw sector I/O
+ *
+ * Using the CDROMREADAUDIO it is possible to read raw audio and data
+ * tracks. Both operations return 2352 bytes per sector. On the data
+ * tracks, the first 12 bytes is not returned by the drive and the value
+ * of that data is indeterminate.
+ *
+ *
+ * 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.
+ *
+ * TODO:
+ * CDs with form1 and form2 sectors cause problems
+ * with current read-ahead strategy.
+ *
+ * Credits:
+ * Heiko Eissfeldt <heiko@colossus.escape.de>
+ * For finding abug in the return of the track numbers.
+ * TOC processing redone for proper multisession support.
+ *
+ *
+ * It probably a little late to be adding a history, but I guess I
+ * will start.
+ *
+ * 10/24/95 - Added support for disabling the eject button when the
+ * drive is open. Note that there is a small problem
+ * still here, if the eject button is pushed while the
+ * drive light is flashing, the drive will return a bad
+ * status and be reset. It recovers, though.
+ *
+ * 03/07/97 - Fixed a problem with timers.
+ *
+ *
+ * 18 Spetember 1997 -- Ported to Uniform CD-ROM driver by
+ * Heiko Eissfeldt <heiko@colossus.escape.de> with additional
+ * changes by Erik Andersen <andersee@debian.org>
+ *
+ * 24 January 1998 -- Removed the scd_disc_status() function, which was now
+ * just dead code left over from the port.
+ * Erik Andersen <andersee@debian.org>
+ *
+ * 16 July 1998 -- Drive donated to Erik Andersen by John Kodis
+ * <kodis@jagunet.com>. Work begun on fixing driver to
+ * work under 2.1.X. Added temporary extra printks
+ * which seem to slow it down enough to work.
+ *
+ * 9 November 1999 -- Make kernel-parameter implementation work with 2.3.x
+ * Removed init_module & cleanup_module in favor of
+ * module_init & module_exit.
+ * Torben Mathiasen <tmm@image.dk>
+ *
+ * 22 October 2004 -- Make the driver work in 2.6.X
+ * Added workaround to fix hard lockups on eject
+ * Fixed door locking problem after mounting empty drive
+ * Set double-speed drives to double speed by default
+ * Removed all readahead things - not needed anymore
+ * Ondrej Zary <rainbow@rainbow-software.org>
+*/
+
+#define DEBUG 1
+
+#include <linux/major.h>
+#include <linux/module.h>
+#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>
+#include <linux/ioport.h>
+#include <linux/devfs_fs_kernel.h>
+#include <linux/string.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/cdrom.h>
+
+#include <asm/system.h>
+#include <asm/io.h>
+#include <asm/uaccess.h>
+#include <asm/dma.h>
+
+#include "cdu31a.h"
+
+#define MAJOR_NR CDU31A_CDROM_MAJOR
+#include <linux/blkdev.h>
+
+#define CDU31A_MAX_CONSECUTIVE_ATTENTIONS 10
+
+#define PFX "CDU31A: "
+
+/*
+** Edit the following data to change interrupts, DMA channels, etc.
+** Default is polled and no DMA. DMA is not recommended for double-speed
+** drives.
+*/
+static struct {
+ unsigned short base; /* I/O Base Address */
+ short int_num; /* Interrupt Number (-1 means scan for it,
+ 0 means don't use) */
+} cdu31a_addresses[] __initdata = {
+ {0}
+};
+
+static int handle_sony_cd_attention(void);
+static int read_subcode(void);
+static void sony_get_toc(void);
+static int scd_spinup(void);
+/*static int scd_open(struct inode *inode, struct file *filp);*/
+static int scd_open(struct cdrom_device_info *, int);
+static void do_sony_cd_cmd(unsigned char cmd,
+ unsigned char *params,
+ unsigned int num_params,
+ unsigned char *result_buffer,
+ unsigned int *result_size);
+static void size_to_buf(unsigned int size, unsigned char *buf);
+
+/* Parameters for the read-ahead. */
+static unsigned int sony_next_block; /* Next 512 byte block offset */
+static unsigned int sony_blocks_left = 0; /* Number of 512 byte blocks left
+ in the current read command. */
+
+
+/* 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 int cdu31a_port = 0;
+module_param(cdu31a_port, uint, 0);
+
+/*
+ * The following are I/O addresses of the various registers for the drive. The
+ * comment for the base address also applies here.
+ */
+static volatile unsigned short sony_cd_cmd_reg;
+static volatile unsigned short sony_cd_param_reg;
+static volatile unsigned short sony_cd_write_reg;
+static volatile unsigned short sony_cd_control_reg;
+static volatile unsigned short sony_cd_status_reg;
+static volatile unsigned short sony_cd_result_reg;
+static volatile unsigned short sony_cd_read_reg;
+static volatile unsigned short sony_cd_fifost_reg;
+
+static struct request_queue *cdu31a_queue;
+static DEFINE_SPINLOCK(cdu31a_lock); /* queue lock */
+
+static int sony_spun_up = 0; /* Has the drive been spun up? */
+
+static int sony_speed = 0; /* Last wanted speed */
+
+static int sony_xa_mode = 0; /* Is an XA disk in the drive
+ and the drive a CDU31A? */
+
+static int sony_raw_data_mode = 1; /* 1 if data tracks, 0 if audio.
+ For raw data reads. */
+
+static unsigned int sony_usage = 0; /* How many processes have the
+ drive open. */
+
+static int sony_pas_init = 0; /* Initialize the Pro-Audio
+ Spectrum card? */
+
+static struct s_sony_session_toc single_toc; /* Holds the
+ table of
+ contents. */
+
+static struct s_all_sessions_toc sony_toc; /* entries gathered from all
+ sessions */
+
+static int sony_toc_read = 0; /* Has the TOC been read for
+ the drive? */
+
+static struct s_sony_subcode last_sony_subcode; /* Points to the last
+ subcode address read */
+
+static DECLARE_MUTEX(sony_sem); /* Semaphore for drive hardware access */
+
+static int is_double_speed = 0; /* does the drive support double speed ? */
+
+static int is_auto_eject = 1; /* Door has been locked? 1=No/0=Yes */
+
+/*
+ * The audio status uses the values from read subchannel data as specified
+ * in include/linux/cdrom.h.
+ */
+static volatile 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.
+ */
+static unsigned volatile char cur_pos_msf[3] = { 0, 0, 0 };
+static unsigned volatile char final_pos_msf[3] = { 0, 0, 0 };
+
+/* What IRQ is the drive using? 0 if none. */
+static int cdu31a_irq = 0;
+module_param(cdu31a_irq, int, 0);
+
+/* The interrupt handler will wake this queue up when it gets an
+ interrupts. */
+DECLARE_WAIT_QUEUE_HEAD(cdu31a_irq_wait);
+static int irq_flag = 0;
+
+static int curr_control_reg = 0; /* Current value of the control register */
+
+/* A disk changed variable. When a disk change is detected, it will
+ all be set to TRUE. As the upper layers ask for disk_changed status
+ it will be cleared. */
+static char disk_changed;
+
+/* This was readahead_buffer once... Now it's used only for audio reads */
+static char audio_buffer[CD_FRAMESIZE_RAW];
+
+/* Used to time a short period to abort an operation after the
+ drive has been idle for a while. This keeps the light on
+ the drive from flashing for very long. */
+static struct timer_list cdu31a_abort_timer;
+
+/* Marks if the timeout has started an abort read. This is used
+ on entry to the drive to tell the code to read out the status
+ from the abort read. */
+static int abort_read_started = 0;
+
+/*
+ * Uniform cdrom interface function
+ * report back, if disc has changed from time of last request.
+ */
+static int scd_media_changed(struct cdrom_device_info *cdi, int disc_nr)
+{
+ int retval;
+
+ retval = disk_changed;
+ disk_changed = 0;
+
+ return retval;
+}
+
+/*
+ * Uniform cdrom interface function
+ * report back, if drive is ready
+ */
+static int scd_drive_status(struct cdrom_device_info *cdi, int slot_nr)
+{
+ if (CDSL_CURRENT != slot_nr)
+ /* we have no changer support */
+ return -EINVAL;
+ if (sony_spun_up)
+ return CDS_DISC_OK;
+ if (down_interruptible(&sony_sem))
+ return -ERESTARTSYS;
+ if (scd_spinup() == 0)
+ sony_spun_up = 1;
+ up(&sony_sem);
+ return sony_spun_up ? CDS_DISC_OK : CDS_DRIVE_NOT_READY;
+}
+
+static inline void enable_interrupts(void)
+{
+ curr_control_reg |= (SONY_ATTN_INT_EN_BIT
+ | SONY_RES_RDY_INT_EN_BIT
+ | SONY_DATA_RDY_INT_EN_BIT);
+ outb(curr_control_reg, sony_cd_control_reg);
+}
+
+static inline void disable_interrupts(void)
+{
+ curr_control_reg &= ~(SONY_ATTN_INT_EN_BIT
+ | SONY_RES_RDY_INT_EN_BIT
+ | SONY_DATA_RDY_INT_EN_BIT);
+ outb(curr_control_reg, sony_cd_control_reg);
+}
+
+/*
+ * Wait a little while (used for polling the drive). If in initialization,
+ * setting a timeout doesn't work, so just loop for a while.
+ */
+static inline void sony_sleep(void)
+{
+ if (cdu31a_irq <= 0) {
+ yield();
+ } else { /* Interrupt driven */
+ DEFINE_WAIT(w);
+ int first = 1;
+
+ while (1) {
+ prepare_to_wait(&cdu31a_irq_wait, &w,
+ TASK_INTERRUPTIBLE);
+ if (first) {
+ enable_interrupts();
+ first = 0;
+ }
+
+ if (irq_flag != 0)
+ break;
+ if (!signal_pending(current)) {
+ schedule();
+ continue;
+ } else
+ disable_interrupts();
+ break;
+ }
+ finish_wait(&cdu31a_irq_wait, &w);
+ irq_flag = 0;
+ }
+}
+
+
+/*
+ * The following are convenience routine to read various status and set
+ * various conditions in the drive.
+ */
+static inline int is_attention(void)
+{
+ return (inb(sony_cd_status_reg) & SONY_ATTN_BIT) != 0;
+}
+
+static inline int is_busy(void)
+{
+ return (inb(sony_cd_status_reg) & SONY_BUSY_BIT) != 0;
+}
+
+static inline int is_data_ready(void)
+{
+ return (inb(sony_cd_status_reg) & SONY_DATA_RDY_BIT) != 0;
+}
+
+static inline int is_data_requested(void)
+{
+ return (inb(sony_cd_status_reg) & SONY_DATA_REQUEST_BIT) != 0;
+}
+
+static inline int is_result_ready(void)
+{
+ return (inb(sony_cd_status_reg) & SONY_RES_RDY_BIT) != 0;
+}
+
+static inline int is_param_write_rdy(void)
+{
+ return (inb(sony_cd_fifost_reg) & SONY_PARAM_WRITE_RDY_BIT) != 0;
+}
+
+static inline int is_result_reg_not_empty(void)
+{
+ return (inb(sony_cd_fifost_reg) & SONY_RES_REG_NOT_EMP_BIT) != 0;
+}
+
+static inline void reset_drive(void)
+{
+ curr_control_reg = 0;
+ sony_toc_read = 0;
+ outb(SONY_DRIVE_RESET_BIT, sony_cd_control_reg);
+}
+
+/*
+ * Uniform cdrom interface function
+ * reset drive and return when it is ready
+ */
+static int scd_reset(struct cdrom_device_info *cdi)
+{
+ unsigned long retry_count;
+
+ if (down_interruptible(&sony_sem))
+ return -ERESTARTSYS;
+ reset_drive();
+
+ retry_count = jiffies + SONY_RESET_TIMEOUT;
+ while (time_before(jiffies, retry_count) && (!is_attention())) {
+ sony_sleep();
+ }
+
+ up(&sony_sem);
+ return 0;
+}
+
+static inline void clear_attention(void)
+{
+ outb(curr_control_reg | SONY_ATTN_CLR_BIT, sony_cd_control_reg);
+}
+
+static inline void clear_result_ready(void)
+{
+ outb(curr_control_reg | SONY_RES_RDY_CLR_BIT, sony_cd_control_reg);
+}
+
+static inline void clear_data_ready(void)
+{
+ outb(curr_control_reg | SONY_DATA_RDY_CLR_BIT,
+ sony_cd_control_reg);
+}
+
+static inline void clear_param_reg(void)
+{
+ outb(curr_control_reg | SONY_PARAM_CLR_BIT, sony_cd_control_reg);
+}
+
+static inline unsigned char read_status_register(void)
+{
+ return inb(sony_cd_status_reg);
+}
+
+static inline unsigned char read_result_register(void)
+{
+ return inb(sony_cd_result_reg);
+}
+
+static inline unsigned char read_data_register(void)
+{
+ return inb(sony_cd_read_reg);
+}
+
+static inline void write_param(unsigned char param)
+{
+ outb(param, sony_cd_param_reg);
+}
+
+static inline void write_cmd(unsigned char cmd)
+{
+ outb(curr_control_reg | SONY_RES_RDY_INT_EN_BIT,
+ sony_cd_control_reg);
+ outb(cmd, sony_cd_cmd_reg);
+}
+
+static irqreturn_t cdu31a_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+ unsigned char val;
+
+ if (abort_read_started) {
+ /* We might be waiting for an abort to finish. Don't
+ disable interrupts yet, though, because we handle
+ this one here. */
+ /* Clear out the result registers. */
+ while (is_result_reg_not_empty()) {
+ val = read_result_register();
+ }
+ clear_data_ready();
+ clear_result_ready();
+
+ /* Clear out the data */
+ while (is_data_requested()) {
+ val = read_data_register();
+ }
+ abort_read_started = 0;
+
+ /* If something was waiting, wake it up now. */
+ if (waitqueue_active(&cdu31a_irq_wait)) {
+ disable_interrupts();
+ irq_flag = 1;
+ wake_up_interruptible(&cdu31a_irq_wait);
+ }
+ } else if (waitqueue_active(&cdu31a_irq_wait)) {
+ disable_interrupts();
+ irq_flag = 1;
+ wake_up_interruptible(&cdu31a_irq_wait);
+ } else {
+ disable_interrupts();
+ printk(KERN_NOTICE PFX
+ "Got an interrupt but nothing was waiting\n");
+ }
+ return IRQ_HANDLED;
+}
+
+/*
+ * give more verbose error messages
+ */
+static unsigned char *translate_error(unsigned char err_code)
+{
+ static unsigned char errbuf[80];
+
+ switch (err_code) {
+ case 0x10: return "illegal command ";
+ case 0x11: return "illegal parameter ";
+
+ case 0x20: return "not loaded ";
+ case 0x21: return "no disc ";
+ case 0x22: return "not spinning ";
+ case 0x23: return "spinning ";
+ case 0x25: return "spindle servo ";
+ case 0x26: return "focus servo ";
+ case 0x29: return "eject mechanism ";
+ case 0x2a: return "audio playing ";
+ case 0x2c: return "emergency eject ";
+
+ case 0x30: return "focus ";
+ case 0x31: return "frame sync ";
+ case 0x32: return "subcode address ";
+ case 0x33: return "block sync ";
+ case 0x34: return "header address ";
+
+ case 0x40: return "illegal track read ";
+ case 0x41: return "mode 0 read ";
+ case 0x42: return "illegal mode read ";
+ case 0x43: return "illegal block size read ";
+ case 0x44: return "mode read ";
+ case 0x45: return "form read ";
+ case 0x46: return "leadout read ";
+ case 0x47: return "buffer overrun ";
+
+ case 0x53: return "unrecoverable CIRC ";
+ case 0x57: return "unrecoverable LECC ";
+
+ case 0x60: return "no TOC ";
+ case 0x61: return "invalid subcode data ";
+ case 0x63: return "focus on TOC read ";
+ case 0x64: return "frame sync on TOC read ";
+ case 0x65: return "TOC data ";
+
+ case 0x70: return "hardware failure ";
+ case 0x91: return "leadin ";
+ case 0x92: return "leadout ";
+ case 0x93: return "data track ";
+ }
+ sprintf(errbuf, "unknown 0x%02x ", err_code);
+ return errbuf;
+}
+
+/*
+ * Set the drive parameters so the drive will auto-spin-up when a
+ * disk is inserted.
+ */
+static void set_drive_params(int want_doublespeed)
+{
+ unsigned char res_reg[12];
+ unsigned int res_size;
+ unsigned char params[3];
+
+
+ params[0] = SONY_SD_AUTO_SPIN_DOWN_TIME;
+ params[1] = 0x00; /* Never spin down the drive. */
+ do_sony_cd_cmd(SONY_SET_DRIVE_PARAM_CMD,
+ params, 2, res_reg, &res_size);
+ if ((res_size < 2) || ((res_reg[0] & 0xf0) == 0x20)) {
+ printk(KERN_NOTICE PFX
+ "Unable to set spin-down time: 0x%2.2x\n", res_reg[1]);
+ }
+
+ params[0] = SONY_SD_MECH_CONTROL;
+ params[1] = SONY_AUTO_SPIN_UP_BIT; /* Set auto spin up */
+
+ if (is_auto_eject)
+ params[1] |= SONY_AUTO_EJECT_BIT;
+
+ if (is_double_speed && want_doublespeed) {
+ params[1] |= SONY_DOUBLE_SPEED_BIT; /* Set the drive to double speed if
+ possible */
+ }
+ do_sony_cd_cmd(SONY_SET_DRIVE_PARAM_CMD,
+ params, 2, res_reg, &res_size);
+ if ((res_size < 2) || ((res_reg[0] & 0xf0) == 0x20)) {
+ printk(KERN_NOTICE PFX "Unable to set mechanical "
+ "parameters: 0x%2.2x\n", res_reg[1]);
+ }
+}
+
+/*
+ * Uniform cdrom interface function
+ * select reading speed for data access
+ */
+static int scd_select_speed(struct cdrom_device_info *cdi, int speed)
+{
+ if (speed == 0)
+ sony_speed = 1;
+ else
+ sony_speed = speed - 1;
+
+ if (down_interruptible(&sony_sem))
+ return -ERESTARTSYS;
+ set_drive_params(sony_speed);
+ up(&sony_sem);
+ return 0;
+}
+
+/*
+ * Uniform cdrom interface function
+ * lock or unlock eject button
+ */
+static int scd_lock_door(struct cdrom_device_info *cdi, int lock)
+{
+ if (lock == 0) {
+ is_auto_eject = 1;
+ } else {
+ is_auto_eject = 0;
+ }
+ if (down_interruptible(&sony_sem))
+ return -ERESTARTSYS;
+ set_drive_params(sony_speed);
+ up(&sony_sem);
+ return 0;
+}
+
+/*
+ * This code will reset the drive and attempt to restore sane parameters.
+ */
+static void restart_on_error(void)
+{
+ unsigned char res_reg[12];
+ unsigned int res_size;
+ unsigned long retry_count;
+
+
+ printk(KERN_NOTICE PFX "Resetting drive on error\n");
+ reset_drive();
+ retry_count = jiffies + SONY_RESET_TIMEOUT;
+ while (time_before(jiffies, retry_count) && (!is_attention())) {
+ sony_sleep();
+ }
+ set_drive_params(sony_speed);
+ do_sony_cd_cmd(SONY_SPIN_UP_CMD, NULL, 0, res_reg, &res_size);
+ if ((res_size < 2) || ((res_reg[0] & 0xf0) == 0x20)) {
+ printk(KERN_NOTICE PFX "Unable to spin up drive: 0x%2.2x\n",
+ res_reg[1]);
+ }
+
+ msleep(2000);
+
+ sony_get_toc();
+}
+
+/*
+ * This routine writes data to the parameter register. Since this should
+ * happen fairly fast, it is polled with no OS waits between.
+ */
+static int write_params(unsigned char *params, int num_params)
+{
+ unsigned int retry_count;
+
+
+ retry_count = SONY_READY_RETRIES;
+ while ((retry_count > 0) && (!is_param_write_rdy())) {
+ retry_count--;
+ }
+ if (!is_param_write_rdy()) {
+ return -EIO;
+ }
+
+ while (num_params > 0) {
+ write_param(*params);
+ params++;
+ num_params--;
+ }
+
+ return 0;
+}
+
+
+/*
+ * The following reads data from the command result register. It is a
+ * fairly complex routine, all status info flows back through this
+ * interface. The algorithm is stolen directly from the flowcharts in
+ * the drive manual.
+ */
+static void
+get_result(unsigned char *result_buffer, unsigned int *result_size)
+{
+ unsigned char a, b;
+ int i;
+ unsigned long retry_count;
+
+
+ while (handle_sony_cd_attention());
+ /* Wait for the result data to be ready */
+ retry_count = jiffies + SONY_JIFFIES_TIMEOUT;
+ while (time_before(jiffies, retry_count)
+ && (is_busy() || (!(is_result_ready())))) {
+ sony_sleep();
+
+ while (handle_sony_cd_attention());
+ }
+ if (is_busy() || (!(is_result_ready()))) {
+ pr_debug(PFX "timeout out %d\n", __LINE__);
+ result_buffer[0] = 0x20;
+ result_buffer[1] = SONY_TIMEOUT_OP_ERR;
+ *result_size = 2;
+ return;
+ }
+
+ /*
+ * Get the first two bytes. This determines what else needs
+ * to be done.
+ */
+ clear_result_ready();
+ a = read_result_register();
+ *result_buffer = a;
+ result_buffer++;
+
+ /* Check for block error status result. */
+ if ((a & 0xf0) == 0x50) {
+ *result_size = 1;
+ return;
+ }
+
+ b = read_result_register();
+ *result_buffer = b;
+ result_buffer++;
+ *result_size = 2;
+
+ /*
+ * 0x20 means an error occurred. Byte 2 will have the error code.
+ * Otherwise, the command succeeded, byte 2 will have the count of
+ * how many more status bytes are coming.
+ *
+ * The result register can be read 10 bytes at a time, a wait for
+ * result ready to be asserted must be done between every 10 bytes.
+ */
+ if ((a & 0xf0) != 0x20) {
+ if (b > 8) {
+ for (i = 0; i < 8; i++) {
+ *result_buffer = read_result_register();
+ result_buffer++;
+ (*result_size)++;
+ }
+ b = b - 8;
+
+ while (b > 10) {
+ retry_count = SONY_READY_RETRIES;
+ while ((retry_count > 0)
+ && (!is_result_ready())) {
+ retry_count--;
+ }
+ if (!is_result_ready()) {
+ pr_debug(PFX "timeout out %d\n",
+ __LINE__);
+ result_buffer[0] = 0x20;
+ result_buffer[1] =
+ SONY_TIMEOUT_OP_ERR;
+ *result_size = 2;
+ return;
+ }
+
+ clear_result_ready();
+
+ for (i = 0; i < 10; i++) {
+ *result_buffer =
+ read_result_register();
+ result_buffer++;
+ (*result_size)++;
+ }
+ b = b - 10;
+ }
+
+ if (b > 0) {
+ retry_count = SONY_READY_RETRIES;
+ while ((retry_count > 0)
+ && (!is_result_ready())) {
+ retry_count--;
+ }
+ if (!is_result_ready()) {
+ pr_debug(PFX "timeout out %d\n",
+ __LINE__);
+ result_buffer[0] = 0x20;
+ result_buffer[1] =
+ SONY_TIMEOUT_OP_ERR;
+ *result_size = 2;
+ return;
+ }
+ }
+ }
+
+ while (b > 0) {
+ *result_buffer = read_result_register();
+ result_buffer++;
+ (*result_size)++;
+ b--;
+ }
+ }
+}
+
+/*
+ * Do a command that does not involve data transfer. This routine must
+ * be re-entrant from the same task to support being called from the
+ * data operation code when an error occurs.
+ */
+static void
+do_sony_cd_cmd(unsigned char cmd,
+ unsigned char *params,
+ unsigned int num_params,
+ unsigned char *result_buffer, unsigned int *result_size)
+{
+ unsigned long retry_count;
+ int num_retries = 0;
+
+retry_cd_operation:
+
+ while (handle_sony_cd_attention());
+
+ retry_count = jiffies + SONY_JIFFIES_TIMEOUT;
+ while (time_before(jiffies, retry_count) && (is_busy())) {
+ sony_sleep();
+
+ while (handle_sony_cd_attention());
+ }
+ if (is_busy()) {
+ pr_debug(PFX "timeout out %d\n", __LINE__);
+ result_buffer[0] = 0x20;
+ result_buffer[1] = SONY_TIMEOUT_OP_ERR;
+ *result_size = 2;
+ } else {
+ clear_result_ready();
+ clear_param_reg();
+
+ write_params(params, num_params);
+ write_cmd(cmd);
+
+ get_result(result_buffer, result_size);
+ }
+
+ if (((result_buffer[0] & 0xf0) == 0x20)
+ && (num_retries < MAX_CDU31A_RETRIES)) {
+ num_retries++;
+ msleep(100);
+ goto retry_cd_operation;
+ }
+}
+
+
+/*
+ * Handle an attention from the drive. This will return 1 if it found one
+ * or 0 if not (if one is found, the caller might want to call again).
+ *
+ * This routine counts the number of consecutive times it is called
+ * (since this is always called from a while loop until it returns
+ * a 0), and returns a 0 if it happens too many times. This will help
+ * prevent a lockup.
+ */
+static int handle_sony_cd_attention(void)
+{
+ unsigned char atten_code;
+ static int num_consecutive_attentions = 0;
+ volatile int val;
+
+
+#if 0
+ pr_debug(PFX "Entering %s\n", __FUNCTION__);
+#endif
+ if (is_attention()) {
+ if (num_consecutive_attentions >
+ CDU31A_MAX_CONSECUTIVE_ATTENTIONS) {
+ printk(KERN_NOTICE PFX "Too many consecutive "
+ "attentions: %d\n", num_consecutive_attentions);
+ num_consecutive_attentions = 0;
+ pr_debug(PFX "Leaving %s at %d\n", __FUNCTION__,
+ __LINE__);
+ return 0;
+ }
+
+ clear_attention();
+ atten_code = read_result_register();
+
+ switch (atten_code) {
+ /* Someone changed the CD. Mark it as changed */
+ case SONY_MECH_LOADED_ATTN:
+ disk_changed = 1;
+ sony_toc_read = 0;
+ sony_audio_status = CDROM_AUDIO_NO_STATUS;
+ sony_blocks_left = 0;
+ break;
+
+ case SONY_SPIN_DOWN_COMPLETE_ATTN:
+ /* Mark the disk as spun down. */
+ sony_spun_up = 0;
+ break;
+
+ case SONY_AUDIO_PLAY_DONE_ATTN:
+ sony_audio_status = CDROM_AUDIO_COMPLETED;
+ read_subcode();
+ break;
+
+ case SONY_EJECT_PUSHED_ATTN:
+ if (is_auto_eject) {
+ sony_audio_status = CDROM_AUDIO_INVALID;
+ }
+ break;
+
+ case SONY_LEAD_IN_ERR_ATTN:
+ case SONY_LEAD_OUT_ERR_ATTN:
+ case SONY_DATA_TRACK_ERR_ATTN:
+ case SONY_AUDIO_PLAYBACK_ERR_ATTN:
+ sony_audio_status = CDROM_AUDIO_ERROR;
+ break;
+ }
+
+ num_consecutive_attentions++;
+ pr_debug(PFX "Leaving %s at %d\n", __FUNCTION__, __LINE__);
+ return 1;
+ } else if (abort_read_started) {
+ while (is_result_reg_not_empty()) {
+ val = read_result_register();
+ }
+ clear_data_ready();
+ clear_result_ready();
+ /* Clear out the data */
+ while (is_data_requested()) {
+ val = read_data_register();
+ }
+ abort_read_started = 0;
+ pr_debug(PFX "Leaving %s at %d\n", __FUNCTION__, __LINE__);
+ return 1;
+ }
+
+ num_consecutive_attentions = 0;
+#if 0
+ pr_debug(PFX "Leaving %s at %d\n", __FUNCTION__, __LINE__);
+#endif
+ return 0;
+}
+
+
+/* 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 = msf[2];
+ log += msf[1] * 75;
+ log += 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;
+}
+
+/* Starts a read operation. Returns 0 on success and 1 on failure.
+ The read operation used here allows multiple sequential sectors
+ to be read and status returned for each sector. The driver will
+ read the output one at a time as the requests come and abort the
+ operation if the requested sector is not the next one from the
+ drive. */
+static int
+start_request(unsigned int sector, unsigned int nsect)
+{
+ unsigned char params[6];
+ unsigned long retry_count;
+
+
+ pr_debug(PFX "Entering %s\n", __FUNCTION__);
+ log_to_msf(sector, params);
+ size_to_buf(nsect, ¶ms[3]);
+
+ /*
+ * Clear any outstanding attentions and wait for the drive to
+ * complete any pending operations.
+ */
+ while (handle_sony_cd_attention());
+
+ retry_count = jiffies + SONY_JIFFIES_TIMEOUT;
+ while (time_before(jiffies, retry_count) && (is_busy())) {
+ sony_sleep();
+
+ while (handle_sony_cd_attention());
+ }
+
+ if (is_busy()) {
+ printk(KERN_NOTICE PFX "Timeout while waiting "
+ "to issue command\n");
+ pr_debug(PFX "Leaving %s at %d\n", __FUNCTION__, __LINE__);
+ return 1;
+ } else {
+ /* Issue the command */
+ clear_result_ready();
+ clear_param_reg();
+
+ write_params(params, 6);
+ write_cmd(SONY_READ_BLKERR_STAT_CMD);
+
+ sony_blocks_left = nsect * 4;
+ sony_next_block = sector * 4;
+ pr_debug(PFX "Leaving %s at %d\n", __FUNCTION__, __LINE__);
+ return 0;
+ }
+ pr_debug(PFX "Leaving %s at %d\n", __FUNCTION__, __LINE__);
+}
+
+/* Abort a pending read operation. Clear all the drive status variables. */
+static void abort_read(void)
+{
+ unsigned char result_reg[2];
+ int result_size;
+ volatile int val;
+
+
+ do_sony_cd_cmd(SONY_ABORT_CMD, NULL, 0, result_reg, &result_size);
+ if ((result_reg[0] & 0xf0) == 0x20) {
+ printk(KERN_ERR PFX "Aborting read, %s error\n",
+ translate_error(result_reg[1]));
+ }
+
+ while (is_result_reg_not_empty()) {
+ val = read_result_register();
+ }
+ clear_data_ready();
+ clear_result_ready();
+ /* Clear out the data */
+ while (is_data_requested()) {
+ val = read_data_register();
+ }
+
+ sony_blocks_left = 0;
+}
+
+/* Called when the timer times out. This will abort the
+ pending read operation. */
+static void handle_abort_timeout(unsigned long data)
+{
+ pr_debug(PFX "Entering %s\n", __FUNCTION__);
+ /* If it is in use, ignore it. */
+ if (down_trylock(&sony_sem) == 0) {
+ /* We can't use abort_read(), because it will sleep
+ or schedule in the timer interrupt. Just start
+ the operation, finish it on the next access to
+ the drive. */
+ clear_result_ready();
+ clear_param_reg();
+ write_cmd(SONY_ABORT_CMD);
+
+ sony_blocks_left = 0;
+ abort_read_started = 1;
+ up(&sony_sem);
+ }
+ pr_debug(PFX "Leaving %s\n", __FUNCTION__);
+}
+
+/* Actually get one sector of data from the drive. */
+static void
+input_data_sector(char *buffer)
+{
+ pr_debug(PFX "Entering %s\n", __FUNCTION__);
+
+ /* If an XA disk on a CDU31A, skip the first 12 bytes of data from
+ the disk. The real data is after that. We can use audio_buffer. */
+ if (sony_xa_mode)
+ insb(sony_cd_read_reg, audio_buffer, CD_XA_HEAD);
+
+ clear_data_ready();
+
+ insb(sony_cd_read_reg, buffer, 2048);
+
+ /* If an XA disk, we have to clear out the rest of the unused
+ error correction data. We can use audio_buffer for that. */
+ if (sony_xa_mode)
+ insb(sony_cd_read_reg, audio_buffer, CD_XA_TAIL);
+
+ pr_debug(PFX "Leaving %s\n", __FUNCTION__);
+}
+
+/* read data from the drive. Note the nsect must be <= 4. */
+static void
+read_data_block(char *buffer,
+ unsigned int block,
+ unsigned int nblocks,
+ unsigned char res_reg[], int *res_size)
+{
+ unsigned long retry_count;
+
+ pr_debug(PFX "Entering %s\n", __FUNCTION__);
+
+ res_reg[0] = 0;
+ res_reg[1] = 0;
+ *res_size = 0;
+
+ /* Wait for the drive to tell us we have something */
+ retry_count = jiffies + SONY_JIFFIES_TIMEOUT;
+ while (time_before(jiffies, retry_count) && !(is_data_ready())) {
+ while (handle_sony_cd_attention());
+
+ sony_sleep();
+ }
+ if (!(is_data_ready())) {
+ if (is_result_ready()) {
+ get_result(res_reg, res_size);
+ if ((res_reg[0] & 0xf0) != 0x20) {
+ printk(KERN_NOTICE PFX "Got result that should"
+ " have been error: %d\n", res_reg[0]);
+ res_reg[0] = 0x20;
+ res_reg[1] = SONY_BAD_DATA_ERR;
+ *res_size = 2;
+ }
+ abort_read();
+ } else {
+ pr_debug(PFX "timeout out %d\n", __LINE__);
+ res_reg[0] = 0x20;
+ res_reg[1] = SONY_TIMEOUT_OP_ERR;
+ *res_size = 2;
+ abort_read();
+ }
+ } else {
+ input_data_sector(buffer);
+ sony_blocks_left -= nblocks;
+ sony_next_block += nblocks;
+
+ /* Wait for the status from the drive. */
+ retry_count = jiffies + SONY_JIFFIES_TIMEOUT;
+ while (time_before(jiffies, retry_count)
+ && !(is_result_ready())) {
+ while (handle_sony_cd_attention());
+
+ sony_sleep();
+ }
+
+ if (!is_result_ready()) {
+ pr_debug(PFX "timeout out %d\n", __LINE__);
+ res_reg[0] = 0x20;
+ res_reg[1] = SONY_TIMEOUT_OP_ERR;
+ *res_size = 2;
+ abort_read();
+ } else {
+ get_result(res_reg, res_size);
+
+ /* If we got a buffer status, handle that. */
+ if ((res_reg[0] & 0xf0) == 0x50) {
+
+ if ((res_reg[0] ==
+ SONY_NO_CIRC_ERR_BLK_STAT)
+ || (res_reg[0] ==
+ SONY_NO_LECC_ERR_BLK_STAT)
+ || (res_reg[0] ==
+ SONY_RECOV_LECC_ERR_BLK_STAT)) {
+ /* nothing here */
+ } else {
+ printk(KERN_ERR PFX "Data block "
+ "error: 0x%x\n", res_reg[0]);
+ res_reg[0] = 0x20;
+ res_reg[1] = SONY_BAD_DATA_ERR;
+ *res_size = 2;
+ }
+
+ /* Final transfer is done for read command, get final result. */
+ if (sony_blocks_left == 0) {
+ get_result(res_reg, res_size);
+ }
+ } else if ((res_reg[0] & 0xf0) != 0x20) {
+ /* The drive gave me bad status, I don't know what to do.
+ Reset the driver and return an error. */
+ printk(KERN_ERR PFX "Invalid block "
+ "status: 0x%x\n", res_reg[0]);
+ restart_on_error();
+ res_reg[0] = 0x20;
+ res_reg[1] = SONY_BAD_DATA_ERR;
+ *res_size = 2;
+ }
+ }
+ }
+ pr_debug(PFX "Leaving %s at %d\n", __FUNCTION__, __LINE__);
+}
+
+
+/*
+ * 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_cdu31a_request(request_queue_t * q)
+{
+ struct request *req;
+ int block, nblock, num_retries;
+ unsigned char res_reg[12];
+ unsigned int res_size;
+
+ pr_debug(PFX "Entering %s\n", __FUNCTION__);
+
+ spin_unlock_irq(q->queue_lock);
+ if (down_interruptible(&sony_sem)) {
+ spin_lock_irq(q->queue_lock);
+ return;
+ }
+
+ /* Get drive status before doing anything. */
+ while (handle_sony_cd_attention());
+
+ /* Make sure we have a valid TOC. */
+ sony_get_toc();
+
+
+ /* Make sure the timer is cancelled. */
+ del_timer(&cdu31a_abort_timer);
+
+ while (1) {
+ /*
+ * The beginning here is stolen from the hard disk driver. I hope
+ * it's right.
+ */
+ req = elv_next_request(q);
+ if (!req)
+ goto end_do_cdu31a_request;
+
+ if (!sony_spun_up)
+ scd_spinup();
+
+ block = req->sector;
+ nblock = req->nr_sectors;
+ pr_debug(PFX "request at block %d, length %d blocks\n",
+ block, nblock);
+ if (!sony_toc_read) {
+ printk(KERN_NOTICE PFX "TOC not read\n");
+ end_request(req, 0);
+ continue;
+ }
+
+ /* WTF??? */
+ if (!(req->flags & REQ_CMD))
+ continue;
+ if (rq_data_dir(req) == WRITE) {
+ end_request(req, 0);
+ continue;
+ }
+
+ /*
+ * If the block address is invalid or the request goes beyond the end of
+ * the media, return an error.
+ */
+ if (((block + nblock) / 4) >= sony_toc.lead_out_start_lba) {
+ printk(KERN_NOTICE PFX "Request past end of media\n");
+ end_request(req, 0);
+ continue;
+ }
+
+ if (nblock > 4)
+ nblock = 4;
+ num_retries = 0;
+
+ try_read_again:
+ while (handle_sony_cd_attention());
+
+ if (!sony_toc_read) {
+ printk(KERN_NOTICE PFX "TOC not read\n");
+ end_request(req, 0);
+ continue;
+ }
+
+ /* If no data is left to be read from the drive, start the
+ next request. */
+ if (sony_blocks_left == 0) {
+ if (start_request(block / 4, nblock / 4)) {
+ end_request(req, 0);
+ continue;
+ }
+ }
+ /* If the requested block is not the next one waiting in
+ the driver, abort the current operation and start a
+ new one. */
+ else if (block != sony_next_block) {
+ pr_debug(PFX "Read for block %d, expected %d\n",
+ block, sony_next_block);
+ abort_read();
+ if (!sony_toc_read) {
+ printk(KERN_NOTICE PFX "TOC not read\n");
+ end_request(req, 0);
+ continue;
+ }
+ if (start_request(block / 4, nblock / 4)) {
+ printk(KERN_NOTICE PFX "start request failed\n");
+ end_request(req, 0);
+ continue;
+ }
+ }
+
+ read_data_block(req->buffer, block, nblock, res_reg, &res_size);
+
+ if (res_reg[0] != 0x20) {
+ if (!end_that_request_first(req, 1, nblock)) {
+ spin_lock_irq(q->queue_lock);
+ blkdev_dequeue_request(req);
+ end_that_request_last(req);
+ spin_unlock_irq(q->queue_lock);
+ }
+ continue;
+ }
+
+ if (num_retries > MAX_CDU31A_RETRIES) {
+ end_request(req, 0);
+ continue;
+ }
+
+ num_retries++;
+ if (res_reg[1] == SONY_NOT_SPIN_ERR) {
+ do_sony_cd_cmd(SONY_SPIN_UP_CMD, NULL, 0, res_reg,
+ &res_size);
+ } else {
+ printk(KERN_NOTICE PFX "%s error for block %d, nblock %d\n",
+ translate_error(res_reg[1]), block, nblock);
+ }
+ goto try_read_again;
+ }
+ end_do_cdu31a_request:
+#if 0
+ /* After finished, cancel any pending operations. */
+ abort_read();
+#else
+ /* Start a timer to time out after a while to disable
+ the read. */
+ cdu31a_abort_timer.expires = jiffies + 2 * HZ; /* Wait 2 seconds */
+ add_timer(&cdu31a_abort_timer);
+#endif
+
+ up(&sony_sem);
+ spin_lock_irq(q->queue_lock);
+ pr_debug(PFX "Leaving %s at %d\n", __FUNCTION__, __LINE__);
+}
+
+
+/*
+ * Read the table of contents from the drive and set up TOC if
+ * successful.
+ */
+static void sony_get_toc(void)
+{
+ unsigned char res_reg[2];
+ unsigned int res_size;
+ unsigned char parms[1];
+ int session;
+ int num_spin_ups;
+ int totaltracks = 0;
+ int mint = 99;
+ int maxt = 0;
+
+ pr_debug(PFX "Entering %s\n", __FUNCTION__);
+
+ num_spin_ups = 0;
+ if (!sony_toc_read) {
+ respinup_on_gettoc:
+ /* Ignore the result, since it might error if spinning already. */
+ do_sony_cd_cmd(SONY_SPIN_UP_CMD, NULL, 0, res_reg,
+ &res_size);
+
+ do_sony_cd_cmd(SONY_READ_TOC_CMD, NULL, 0, res_reg,
+ &res_size);
+
+ /* The drive sometimes returns error 0. I don't know why, but ignore
+ it. It seems to mean the drive has already done the operation. */
+ if ((res_size < 2)
+ || ((res_reg[0] != 0) && (res_reg[1] != 0))) {
+ /* If the drive is already playing, it's ok. */
+ if ((res_reg[1] == SONY_AUDIO_PLAYING_ERR)
+ || (res_reg[1] == 0)) {
+ goto gettoc_drive_spinning;
+ }
+
+ /* If the drive says it is not spun up (even though we just did it!)
+ then retry the operation at least a few times. */
+ if ((res_reg[1] == SONY_NOT_SPIN_ERR)
+ && (num_spin_ups < MAX_CDU31A_RETRIES)) {
+ num_spin_ups++;
+ goto respinup_on_gettoc;
+ }
+
+ printk("cdu31a: Error reading TOC: %x %s\n",
+ res_reg[0], translate_error(res_reg[1]));
+ return;
+ }
+
+ gettoc_drive_spinning:
+
+ /* The idea here is we keep asking for sessions until the command
+ fails. Then we know what the last valid session on the disk is.
+ No need to check session 0, since session 0 is the same as session
+ 1; the command returns different information if you give it 0.
+ */
+#if DEBUG
+ memset(&sony_toc, 0x0e, sizeof(sony_toc));
+ memset(&single_toc, 0x0f, sizeof(single_toc));
+#endif
+ session = 1;
+ while (1) {
+/* This seems to slow things down enough to make it work. This
+ * appears to be a problem in do_sony_cd_cmd. This printk seems
+ * to address the symptoms... -Erik */
+ pr_debug(PFX "Trying session %d\n", session);
+ parms[0] = session;
+ do_sony_cd_cmd(SONY_READ_TOC_SPEC_CMD,
+ parms, 1, res_reg, &res_size);
+
+ pr_debug(PFX "%2.2x %2.2x\n", res_reg[0], res_reg[1]);
+
+ if ((res_size < 2)
+ || ((res_reg[0] & 0xf0) == 0x20)) {
+ /* An error reading the TOC, this must be past the last session. */
+ if (session == 1)
+ printk
+ ("Yikes! Couldn't read any sessions!");
+ break;
+ }
+ pr_debug(PFX "Reading session %d\n", session);
+
+ parms[0] = session;
+ do_sony_cd_cmd(SONY_REQ_TOC_DATA_SPEC_CMD,
+ parms,
+ 1,
+ (unsigned char *) &single_toc,
+ &res_size);
+ if ((res_size < 2)
+ || ((single_toc.exec_status[0] & 0xf0) ==
+ 0x20)) {
+ printk(KERN_ERR PFX "Error reading "
+ "session %d: %x %s\n",
+ session, single_toc.exec_status[0],
+ translate_error(single_toc.
+ exec_status[1]));
+ /* An error reading the TOC. Return without sony_toc_read
+ set. */
+ return;
+ }
+ pr_debug(PFX "add0 %01x, con0 %01x, poi0 %02x, "
+ "1st trk %d, dsktyp %x, dum0 %x\n",
+ single_toc.address0, single_toc.control0,
+ single_toc.point0,
+ bcd_to_int(single_toc.first_track_num),
+ single_toc.disk_type, single_toc.dummy0);
+ pr_debug(PFX "add1 %01x, con1 %01x, poi1 %02x, "
+ "lst trk %d, dummy1 %x, dum2 %x\n",
+ single_toc.address1, single_toc.control1,
+ single_toc.point1,
+ bcd_to_int(single_toc.last_track_num),
+ single_toc.dummy1, single_toc.dummy2);
+ pr_debug(PFX "add2 %01x, con2 %01x, poi2 %02x "
+ "leadout start min %d, sec %d, frame %d\n",
+ single_toc.address2, single_toc.control2,
+ single_toc.point2,
+ bcd_to_int(single_toc.lead_out_start_msf[0]),
+ bcd_to_int(single_toc.lead_out_start_msf[1]),
+ bcd_to_int(single_toc.lead_out_start_msf[2]));
+ if (res_size > 18 && single_toc.pointb0 > 0xaf)
+ pr_debug(PFX "addb0 %01x, conb0 %01x, poib0 %02x, nextsession min %d, sec %d, frame %d\n"
+ "#mode5_ptrs %02d, max_start_outer_leadout_msf min %d, sec %d, frame %d\n",
+ single_toc.addressb0,
+ single_toc.controlb0,
+ single_toc.pointb0,
+ bcd_to_int(single_toc.
+ next_poss_prog_area_msf
+ [0]),
+ bcd_to_int(single_toc.
+ next_poss_prog_area_msf
+ [1]),
+ bcd_to_int(single_toc.
+ next_poss_prog_area_msf
+ [2]),
+ single_toc.num_mode_5_pointers,
+ bcd_to_int(single_toc.
+ max_start_outer_leadout_msf
+ [0]),
+ bcd_to_int(single_toc.
+ max_start_outer_leadout_msf
+ [1]),
+ bcd_to_int(single_toc.
+ max_start_outer_leadout_msf
+ [2]));
+ if (res_size > 27 && single_toc.pointb1 > 0xaf)
+ pr_debug(PFX "addb1 %01x, conb1 %01x, poib1 %02x, %x %x %x %x #skipint_ptrs %d, #skiptrkassign %d %x\n",
+ single_toc.addressb1,
+ single_toc.controlb1,
+ single_toc.pointb1,
+ single_toc.dummyb0_1[0],
+ single_toc.dummyb0_1[1],
+ single_toc.dummyb0_1[2],
+ single_toc.dummyb0_1[3],
+ single_toc.num_skip_interval_pointers,
+ single_toc.num_skip_track_assignments,
+ single_toc.dummyb0_2);
+ if (res_size > 36 && single_toc.pointb2 > 0xaf)
+ pr_debug(PFX "addb2 %01x, conb2 %01x, poib2 %02x, %02x %02x %02x %02x %02x %02x %02x\n",
+ single_toc.addressb2,
+ single_toc.controlb2,
+ single_toc.pointb2,
+ single_toc.tracksb2[0],
+ single_toc.tracksb2[1],
+ single_toc.tracksb2[2],
+ single_toc.tracksb2[3],
+ single_toc.tracksb2[4],
+ single_toc.tracksb2[5],
+ single_toc.tracksb2[6]);
+ if (res_size > 45 && single_toc.pointb3 > 0xaf)
+ pr_debug(PFX "addb3 %01x, conb3 %01x, poib3 %02x, %02x %02x %02x %02x %02x %02x %02x\n",
+ single_toc.addressb3,
+ single_toc.controlb3,
+ single_toc.pointb3,
+ single_toc.tracksb3[0],
+ single_toc.tracksb3[1],
+ single_toc.tracksb3[2],
+ single_toc.tracksb3[3],
+ single_toc.tracksb3[4],
+ single_toc.tracksb3[5],
+ single_toc.tracksb3[6]);
+ if (res_size > 54 && single_toc.pointb4 > 0xaf)
+ pr_debug(PFX "addb4 %01x, conb4 %01x, poib4 %02x, %02x %02x %02x %02x %02x %02x %02x\n",
+ single_toc.addressb4,
+ single_toc.controlb4,
+ single_toc.pointb4,
+ single_toc.tracksb4[0],
+ single_toc.tracksb4[1],
+ single_toc.tracksb4[2],
+ single_toc.tracksb4[3],
+ single_toc.tracksb4[4],
+ single_toc.tracksb4[5],
+ single_toc.tracksb4[6]);
+ if (res_size > 63 && single_toc.pointc0 > 0xaf)
+ pr_debug(PFX "addc0 %01x, conc0 %01x, poic0 %02x, %02x %02x %02x %02x %02x %02x %02x\n",
+ single_toc.addressc0,
+ single_toc.controlc0,
+ single_toc.pointc0,
+ single_toc.dummyc0[0],
+ single_toc.dummyc0[1],
+ single_toc.dummyc0[2],
+ single_toc.dummyc0[3],
+ single_toc.dummyc0[4],
+ single_toc.dummyc0[5],
+ single_toc.dummyc0[6]);
+#undef DEBUG
+#define DEBUG 0
+
+ sony_toc.lead_out_start_msf[0] =
+ bcd_to_int(single_toc.lead_out_start_msf[0]);
+ sony_toc.lead_out_start_msf[1] =
+ bcd_to_int(single_toc.lead_out_start_msf[1]);
+ sony_toc.lead_out_start_msf[2] =
+ bcd_to_int(single_toc.lead_out_start_msf[2]);
+ sony_toc.lead_out_start_lba =
+ single_toc.lead_out_start_lba =
+ msf_to_log(sony_toc.lead_out_start_msf);
+
+ /* For points that do not exist, move the data over them
+ to the right location. */
+ if (single_toc.pointb0 != 0xb0) {
+ memmove(((char *) &single_toc) + 27,
+ ((char *) &single_toc) + 18,
+ res_size - 18);
+ res_size += 9;
+ } else if (res_size > 18) {
+ sony_toc.lead_out_start_msf[0] =
+ bcd_to_int(single_toc.
+ max_start_outer_leadout_msf
+ [0]);
+ sony_toc.lead_out_start_msf[1] =
+ bcd_to_int(single_toc.
+ max_start_outer_leadout_msf
+ [1]);
+ sony_toc.lead_out_start_msf[2] =
+ bcd_to_int(single_toc.
+ max_start_outer_leadout_msf
+ [2]);
+ sony_toc.lead_out_start_lba =
+ msf_to_log(sony_toc.
+ lead_out_start_msf);
+ }
+ if (single_toc.pointb1 != 0xb1) {
+ memmove(((char *) &single_toc) + 36,
+ ((char *) &single_toc) + 27,
+ res_size - 27);
+ res_size += 9;
+ }
+ if (single_toc.pointb2 != 0xb2) {
+ memmove(((char *) &single_toc) + 45,
+ ((char *) &single_toc) + 36,
+ res_size - 36);
+ res_size += 9;
+ }
+ if (single_toc.pointb3 != 0xb3) {
+ memmove(((char *) &single_toc) + 54,
+ ((char *) &single_toc) + 45,
+ res_size - 45);
+ res_size += 9;
+ }
+ if (single_toc.pointb4 != 0xb4) {
+ memmove(((char *) &single_toc) + 63,
+ ((char *) &single_toc) + 54,
+ res_size - 54);
+ res_size += 9;
+ }
+ if (single_toc.pointc0 != 0xc0) {
+ memmove(((char *) &single_toc) + 72,
+ ((char *) &single_toc) + 63,
+ res_size - 63);
+ res_size += 9;
+ }
+#if DEBUG
+ printk(PRINT_INFO PFX "start track lba %u, "
+ "leadout start lba %u\n",
+ single_toc.start_track_lba,
+ single_toc.lead_out_start_lba);
+ {
+ int i;
+ for (i = 0;
+ i <
+ 1 +
+ bcd_to_int(single_toc.last_track_num)
+ -
+ bcd_to_int(single_toc.
+ first_track_num); i++) {
+ printk(KERN_INFO PFX "trk %02d: add 0x%01x, con 0x%01x, track %02d, start min %02d, sec %02d, frame %02d\n",
+ i,
+ single_toc.tracks[i].address,
+ single_toc.tracks[i].control,
+ bcd_to_int(single_toc.
+ tracks[i].track),
+ bcd_to_int(single_toc.
+ tracks[i].
+ track_start_msf
+ [0]),
+ bcd_to_int(single_toc.
+ tracks[i].
+ track_start_msf
+ [1]),
+ bcd_to_int(single_toc.
+ tracks[i].
+ track_start_msf
+ [2]));
+ if (mint >
+ bcd_to_int(single_toc.
+ tracks[i].track))
+ mint =
+ bcd_to_int(single_toc.
+ tracks[i].
+ track);
+ if (maxt <
+ bcd_to_int(single_toc.
+ tracks[i].track))
+ maxt =
+ bcd_to_int(single_toc.
+ tracks[i].
+ track);
+ }
+ printk(KERN_INFO PFX "min track number %d, "
+ "max track number %d\n",
+ mint, maxt);
+ }
+#endif
+
+ /* prepare a special table of contents for a CD-I disc. They don't have one. */
+ if (single_toc.disk_type == 0x10 &&
+ single_toc.first_track_num == 2 &&
+ single_toc.last_track_num == 2 /* CD-I */ ) {
+ sony_toc.tracks[totaltracks].address = 1;
+ sony_toc.tracks[totaltracks].control = 4; /* force data tracks */
+ sony_toc.tracks[totaltracks].track = 1;
+ sony_toc.tracks[totaltracks].
+ track_start_msf[0] = 0;
+ sony_toc.tracks[totaltracks].
+ track_start_msf[1] = 2;
+ sony_toc.tracks[totaltracks].
+ track_start_msf[2] = 0;
+ mint = maxt = 1;
+ totaltracks++;
+ } else
+ /* gather track entries from this session */
+ {
+ int i;
+ for (i = 0;
+ i <
+ 1 +
+ bcd_to_int(single_toc.last_track_num)
+ -
+ bcd_to_int(single_toc.
+ first_track_num);
+ i++, totaltracks++) {
+ sony_toc.tracks[totaltracks].
+ address =
+ single_toc.tracks[i].address;
+ sony_toc.tracks[totaltracks].
+ control =
+ single_toc.tracks[i].control;
+ sony_toc.tracks[totaltracks].
+ track =
+ bcd_to_int(single_toc.
+ tracks[i].track);
+ sony_toc.tracks[totaltracks].
+ track_start_msf[0] =
+ bcd_to_int(single_toc.
+ tracks[i].
+ track_start_msf[0]);
+ sony_toc.tracks[totaltracks].
+ track_start_msf[1] =
+ bcd_to_int(single_toc.
+ tracks[i].
+ track_start_msf[1]);
+ sony_toc.tracks[totaltracks].
+ track_start_msf[2] =
+ bcd_to_int(single_toc.
+ tracks[i].
+ track_start_msf[2]);
+ if (i == 0)
+ single_toc.
+ start_track_lba =
+ msf_to_log(sony_toc.
+ tracks
+ [totaltracks].
+ track_start_msf);
+ if (mint >
+ sony_toc.tracks[totaltracks].
+ track)
+ mint =
+ sony_toc.
+ tracks[totaltracks].
+ track;
+ if (maxt <
+ sony_toc.tracks[totaltracks].
+ track)
+ maxt =
+ sony_toc.
+ tracks[totaltracks].
+ track;
+ }
+ }
+ sony_toc.first_track_num = mint;
+ sony_toc.last_track_num = maxt;
+ /* Disk type of last session wins. For example:
+ CD-Extra has disk type 0 for the first session, so
+ a dumb HiFi CD player thinks it is a plain audio CD.
+ We are interested in the disk type of the last session,
+ which is 0x20 (XA) for CD-Extra, so we can access the
+ data track ... */
+ sony_toc.disk_type = single_toc.disk_type;
+ sony_toc.sessions = session;
+
+ /* don't believe everything :-) */
+ if (session == 1)
+ single_toc.start_track_lba = 0;
+ sony_toc.start_track_lba =
+ single_toc.start_track_lba;
+
+ if (session > 1 && single_toc.pointb0 == 0xb0 &&
+ sony_toc.lead_out_start_lba ==
+ single_toc.lead_out_start_lba) {
+ break;
+ }
+
+ /* Let's not get carried away... */
+ if (session > 40) {
+ printk(KERN_NOTICE PFX "too many sessions: "
+ "%d\n", session);
+ break;
+ }
+ session++;
+ }
+ sony_toc.track_entries = totaltracks;
+ /* add one entry for the LAST track with track number CDROM_LEADOUT */
+ sony_toc.tracks[totaltracks].address = single_toc.address2;
+ sony_toc.tracks[totaltracks].control = single_toc.control2;
+ sony_toc.tracks[totaltracks].track = CDROM_LEADOUT;
+ sony_toc.tracks[totaltracks].track_start_msf[0] =
+ sony_toc.lead_out_start_msf[0];
+ sony_toc.tracks[totaltracks].track_start_msf[1] =
+ sony_toc.lead_out_start_msf[1];
+ sony_toc.tracks[totaltracks].track_start_msf[2] =
+ sony_toc.lead_out_start_msf[2];
+
+ sony_toc_read = 1;
+
+ pr_debug(PFX "Disk session %d, start track: %d, "
+ "stop track: %d\n",
+ session, single_toc.start_track_lba,
+ single_toc.lead_out_start_lba);
+ }
+ pr_debug(PFX "Leaving %s\n", __FUNCTION__);
+}
+
+
+/*
+ * Uniform cdrom interface function
+ * return multisession offset and sector information
+ */
+static int scd_get_last_session(struct cdrom_device_info *cdi,
+ struct cdrom_multisession *ms_info)
+{
+ if (ms_info == NULL)
+ return 1;
+
+ if (!sony_toc_read) {
+ if (down_interruptible(&sony_sem))
+ return -ERESTARTSYS;
+ sony_get_toc();
+ up(&sony_sem);
+ }
+
+ ms_info->addr_format = CDROM_LBA;
+ ms_info->addr.lba = sony_toc.start_track_lba;
+ ms_info->xa_flag = sony_toc.disk_type == SONY_XA_DISK_TYPE ||
+ sony_toc.disk_type == 0x10 /* CDI */ ;
+
+ return 0;
+}
+
+/*
+ * Search for a specific track in the table of contents.
+ */
+static int find_track(int track)
+{
+ int i;
+
+ for (i = 0; i <= sony_toc.track_entries; i++) {
+ if (sony_toc.tracks[i].track == track) {
+ return i;
+ }
+ }
+
+ return -1;
+}
+
+
+/*
+ * Read the subcode and put it in last_sony_subcode for future use.
+ */
+static int read_subcode(void)
+{
+ unsigned int res_size;
+
+
+ do_sony_cd_cmd(SONY_REQ_SUBCODE_ADDRESS_CMD,
+ NULL,
+ 0, (unsigned char *) &last_sony_subcode, &res_size);
+ if ((res_size < 2)
+ || ((last_sony_subcode.exec_status[0] & 0xf0) == 0x20)) {
+ printk(KERN_ERR PFX "Sony CDROM error %s (read_subcode)\n",
+ translate_error(last_sony_subcode.exec_status[1]));
+ return -EIO;
+ }
+
+ last_sony_subcode.track_num =
+ bcd_to_int(last_sony_subcode.track_num);
+ last_sony_subcode.index_num =
+ bcd_to_int(last_sony_subcode.index_num);
+ last_sony_subcode.abs_msf[0] =
+ bcd_to_int(last_sony_subcode.abs_msf[0]);
+ last_sony_subcode.abs_msf[1] =
+ bcd_to_int(last_sony_subcode.abs_msf[1]);
+ last_sony_subcode.abs_msf[2] =
+ bcd_to_int(last_sony_subcode.abs_msf[2]);
+
+ last_sony_subcode.rel_msf[0] =
+ bcd_to_int(last_sony_subcode.rel_msf[0]);
+ last_sony_subcode.rel_msf[1] =
+ bcd_to_int(last_sony_subcode.rel_msf[1]);
+ last_sony_subcode.rel_msf[2] =
+ bcd_to_int(last_sony_subcode.rel_msf[2]);
+ return 0;
+}
+
+/*
+ * Uniform cdrom interface function
+ * return the media catalog number found on some older audio cds
+ */
+static int
+scd_get_mcn(struct cdrom_device_info *cdi, struct cdrom_mcn *mcn)
+{
+ unsigned char resbuffer[2 + 14];
+ unsigned char *mcnp = mcn->medium_catalog_number;
+ unsigned char *resp = resbuffer + 3;
+ unsigned int res_size;
+
+ memset(mcn->medium_catalog_number, 0, 14);
+ if (down_interruptible(&sony_sem))
+ return -ERESTARTSYS;
+ do_sony_cd_cmd(SONY_REQ_UPC_EAN_CMD,
+ NULL, 0, resbuffer, &res_size);
+ up(&sony_sem);
+ if ((res_size < 2) || ((resbuffer[0] & 0xf0) == 0x20));
+ else {
+ /* packed bcd to single ASCII digits */
+ *mcnp++ = (*resp >> 4) + '0';
+ *mcnp++ = (*resp++ & 0x0f) + '0';
+ *mcnp++ = (*resp >> 4) + '0';
+ *mcnp++ = (*resp++ & 0x0f) + '0';
+ *mcnp++ = (*resp >> 4) + '0';
+ *mcnp++ = (*resp++ & 0x0f) + '0';
+ *mcnp++ = (*resp >> 4) + '0';
+ *mcnp++ = (*resp++ & 0x0f) + '0';
+ *mcnp++ = (*resp >> 4) + '0';
+ *mcnp++ = (*resp++ & 0x0f) + '0';
+ *mcnp++ = (*resp >> 4) + '0';
+ *mcnp++ = (*resp++ & 0x0f) + '0';
+ *mcnp++ = (*resp >> 4) + '0';
+ }
+ *mcnp = '\0';
+ 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(struct cdrom_subchnl *schi)
+{
+ /* Get attention stuff */
+ while (handle_sony_cd_attention());
+
+ sony_get_toc();
+ if (!sony_toc_read) {
+ return -EIO;
+ }
+
+ switch (sony_audio_status) {
+ case CDROM_AUDIO_NO_STATUS:
+ case CDROM_AUDIO_PLAY:
+ if (read_subcode() < 0) {
+ return -EIO;
+ }
+ break;
+
+ case CDROM_AUDIO_PAUSED:
+ case CDROM_AUDIO_COMPLETED:
+ break;
+
+#if 0
+ case CDROM_AUDIO_NO_STATUS:
+ schi->cdsc_audiostatus = sony_audio_status;
+ return 0;
+ break;
+#endif
+ 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 = last_sony_subcode.track_num;
+ schi->cdsc_ind = last_sony_subcode.index_num;
+ if (schi->cdsc_format == CDROM_MSF) {
+ schi->cdsc_absaddr.msf.minute =
+ last_sony_subcode.abs_msf[0];
+ schi->cdsc_absaddr.msf.second =
+ last_sony_subcode.abs_msf[1];
+ schi->cdsc_absaddr.msf.frame =
+ last_sony_subcode.abs_msf[2];
+
+ schi->cdsc_reladdr.msf.minute =
+ last_sony_subcode.rel_msf[0];
+ schi->cdsc_reladdr.msf.second =
+ last_sony_subcode.rel_msf[1];
+ schi->cdsc_reladdr.msf.frame =
+ 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);
+ }
+
+ return 0;
+}
+
+/* Get audio data from the drive. This is fairly complex because I
+ am looking for status and data at the same time, but if I get status
+ then I just look for data. I need to get the status immediately so
+ the switch from audio to data tracks will happen quickly. */
+static void
+read_audio_data(char *buffer, unsigned char res_reg[], int *res_size)
+{
+ unsigned long retry_count;
+ int result_read;
+
+
+ res_reg[0] = 0;
+ res_reg[1] = 0;
+ *res_size = 0;
+ result_read = 0;
+
+ /* Wait for the drive to tell us we have something */
+ retry_count = jiffies + SONY_JIFFIES_TIMEOUT;
+ continue_read_audio_wait:
+ while (time_before(jiffies, retry_count) && !(is_data_ready())
+ && !(is_result_ready() || result_read)) {
+ while (handle_sony_cd_attention());
+
+ sony_sleep();
+ }
+ if (!(is_data_ready())) {
+ if (is_result_ready() && !result_read) {
+ get_result(res_reg, res_size);
+
+ /* Read block status and continue waiting for data. */
+ if ((res_reg[0] & 0xf0) == 0x50) {
+ result_read = 1;
+ goto continue_read_audio_wait;
+ }
+ /* Invalid data from the drive. Shut down the operation. */
+ else if ((res_reg[0] & 0xf0) != 0x20) {
+ printk(KERN_WARNING PFX "Got result that "
+ "should have been error: %d\n",
+ res_reg[0]);
+ res_reg[0] = 0x20;
+ res_reg[1] = SONY_BAD_DATA_ERR;
+ *res_size = 2;
+ }
+ abort_read();
+ } else {
+ pr_debug(PFX "timeout out %d\n", __LINE__);
+ res_reg[0] = 0x20;
+ res_reg[1] = SONY_TIMEOUT_OP_ERR;
+ *res_size = 2;
+ abort_read();
+ }
+ } else {
+ clear_data_ready();
+
+ /* If data block, then get 2340 bytes offset by 12. */
+ if (sony_raw_data_mode) {
+ insb(sony_cd_read_reg, buffer + CD_XA_HEAD,
+ CD_FRAMESIZE_RAW1);
+ } else {
+ /* Audio gets the whole 2352 bytes. */
+ insb(sony_cd_read_reg, buffer, CD_FRAMESIZE_RAW);
+ }
+
+ /* If I haven't already gotten the result, get it now. */
+ if (!result_read) {
+ /* Wait for the drive to tell us we have something */
+ retry_count = jiffies + SONY_JIFFIES_TIMEOUT;
+ while (time_before(jiffies, retry_count)
+ && !(is_result_ready())) {
+ while (handle_sony_cd_attention());
+
+ sony_sleep();
+ }
+
+ if (!is_result_ready()) {
+ pr_debug(PFX "timeout out %d\n", __LINE__);
+ res_reg[0] = 0x20;
+ res_reg[1] = SONY_TIMEOUT_OP_ERR;
+ *res_size = 2;
+ abort_read();
+ return;
+ } else {
+ get_result(res_reg, res_size);
+ }
+ }
+
+ if ((res_reg[0] & 0xf0) == 0x50) {
+ if ((res_reg[0] == SONY_NO_CIRC_ERR_BLK_STAT)
+ || (res_reg[0] == SONY_NO_LECC_ERR_BLK_STAT)
+ || (res_reg[0] == SONY_RECOV_LECC_ERR_BLK_STAT)
+ || (res_reg[0] == SONY_NO_ERR_DETECTION_STAT)) {
+ /* Ok, nothing to do. */
+ } else {
+ printk(KERN_ERR PFX "Data block error: 0x%x\n",
+ res_reg[0]);
+ res_reg[0] = 0x20;
+ res_reg[1] = SONY_BAD_DATA_ERR;
+ *res_size = 2;
+ }
+ } else if ((res_reg[0] & 0xf0) != 0x20) {
+ /* The drive gave me bad status, I don't know what to do.
+ Reset the driver and return an error. */
+ printk(KERN_NOTICE PFX "Invalid block status: 0x%x\n",
+ res_reg[0]);
+ restart_on_error();
+ res_reg[0] = 0x20;
+ res_reg[1] = SONY_BAD_DATA_ERR;
+ *res_size = 2;
+ }
+ }
+}
+
+/* Perform a raw data read. This will automatically detect the
+ track type and read the proper data (audio or data). */
+static int read_audio(struct cdrom_read_audio *ra)
+{
+ int retval;
+ unsigned char params[2];
+ unsigned char res_reg[12];
+ unsigned int res_size;
+ unsigned int cframe;
+
+ if (down_interruptible(&sony_sem))
+ return -ERESTARTSYS;
+ if (!sony_spun_up)
+ scd_spinup();
+
+ /* Set the drive to do raw operations. */
+ params[0] = SONY_SD_DECODE_PARAM;
+ params[1] = 0x06 | sony_raw_data_mode;
+ do_sony_cd_cmd(SONY_SET_DRIVE_PARAM_CMD,
+ params, 2, res_reg, &res_size);
+ if ((res_size < 2) || ((res_reg[0] & 0xf0) == 0x20)) {
+ printk(KERN_ERR PFX "Unable to set decode params: 0x%2.2x\n",
+ res_reg[1]);
+ retval = -EIO;
+ goto out_up;
+ }
+
+ /* From here down, we have to goto exit_read_audio instead of returning
+ because the drive parameters have to be set back to data before
+ return. */
+
+ retval = 0;
+ if (start_request(ra->addr.lba, ra->nframes)) {
+ retval = -EIO;
+ goto exit_read_audio;
+ }
+
+ /* For every requested frame. */
+ cframe = 0;
+ while (cframe < ra->nframes) {
+ read_audio_data(audio_buffer, res_reg, &res_size);
+ if ((res_reg[0] & 0xf0) == 0x20) {
+ if (res_reg[1] == SONY_BAD_DATA_ERR) {
+ printk(KERN_ERR PFX "Data error on audio "
+ "sector %d\n",
+ ra->addr.lba + cframe);
+ } else if (res_reg[1] == SONY_ILL_TRACK_R_ERR) {
+ /* Illegal track type, change track types and start over. */
+ sony_raw_data_mode =
+ (sony_raw_data_mode) ? 0 : 1;
+
+ /* Set the drive mode. */
+ params[0] = SONY_SD_DECODE_PARAM;
+ params[1] = 0x06 | sony_raw_data_mode;
+ do_sony_cd_cmd(SONY_SET_DRIVE_PARAM_CMD,
+ params,
+ 2, res_reg, &res_size);
+ if ((res_size < 2)
+ || ((res_reg[0] & 0xf0) == 0x20)) {
+ printk(KERN_ERR PFX "Unable to set "
+ "decode params: 0x%2.2x\n",
+ res_reg[1]);
+ retval = -EIO;
+ goto exit_read_audio;
+ }
+
+ /* Restart the request on the current frame. */
+ if (start_request
+ (ra->addr.lba + cframe,
+ ra->nframes - cframe)) {
+ retval = -EIO;
+ goto exit_read_audio;
+ }
+
+ /* Don't go back to the top because don't want to get into
+ and infinite loop. A lot of code gets duplicated, but
+ that's no big deal, I don't guess. */
+ read_audio_data(audio_buffer, res_reg,
+ &res_size);
+ if ((res_reg[0] & 0xf0) == 0x20) {
+ if (res_reg[1] ==
+ SONY_BAD_DATA_ERR) {
+ printk(KERN_ERR PFX "Data error"
+ " on audio sector %d\n",
+ ra->addr.lba +
+ cframe);
+ } else {
+ printk(KERN_ERR PFX "Error reading audio data on sector %d: %s\n",
+ ra->addr.lba + cframe,
+ translate_error
+ (res_reg[1]));
+ retval = -EIO;
+ goto exit_read_audio;
+ }
+ } else if (copy_to_user(ra->buf +
+ (CD_FRAMESIZE_RAW
+ * cframe),
+ audio_buffer,
+ CD_FRAMESIZE_RAW)) {
+ retval = -EFAULT;
+ goto exit_read_audio;
+ }
+ } else {
+ printk(KERN_ERR PFX "Error reading audio "
+ "data on sector %d: %s\n",
+ ra->addr.lba + cframe,
+ translate_error(res_reg[1]));
+ retval = -EIO;
+ goto exit_read_audio;
+ }
+ } else if (copy_to_user(ra->buf + (CD_FRAMESIZE_RAW * cframe),
+ (char *)audio_buffer,
+ CD_FRAMESIZE_RAW)) {
+ retval = -EFAULT;
+ goto exit_read_audio;
+ }
+
+ cframe++;
+ }
+
+ get_result(res_reg, &res_size);
+ if ((res_reg[0] & 0xf0) == 0x20) {
+ printk(KERN_ERR PFX "Error return from audio read: %s\n",
+ translate_error(res_reg[1]));
+ retval = -EIO;
+ goto exit_read_audio;
+ }
+
+ exit_read_audio:
+
+ /* Set the drive mode back to the proper one for the disk. */
+ params[0] = SONY_SD_DECODE_PARAM;
+ if (!sony_xa_mode) {
+ params[1] = 0x0f;
+ } else {
+ params[1] = 0x07;
+ }
+ do_sony_cd_cmd(SONY_SET_DRIVE_PARAM_CMD,
+ params, 2, res_reg, &res_size);
+ if ((res_size < 2) || ((res_reg[0] & 0xf0) == 0x20)) {
+ printk(KERN_ERR PFX "Unable to reset decode params: 0x%2.2x\n",
+ res_reg[1]);
+ retval = -EIO;
+ }
+
+ out_up:
+ up(&sony_sem);
+
+ return retval;
+}
+
+static int
+do_sony_cd_cmd_chk(const char *name,
+ unsigned char cmd,
+ unsigned char *params,
+ unsigned int num_params,
+ unsigned char *result_buffer, unsigned int *result_size)
+{
+ do_sony_cd_cmd(cmd, params, num_params, result_buffer,
+ result_size);
+ if ((*result_size < 2) || ((result_buffer[0] & 0xf0) == 0x20)) {
+ printk(KERN_ERR PFX "Error %s (CDROM%s)\n",
+ translate_error(result_buffer[1]), name);
+ return -EIO;
+ }
+ return 0;
+}
+
+/*
+ * Uniform cdrom interface function
+ * open the tray
+ */
+static int scd_tray_move(struct cdrom_device_info *cdi, int position)
+{
+ int retval;
+
+ if (down_interruptible(&sony_sem))
+ return -ERESTARTSYS;
+ if (position == 1 /* open tray */ ) {
+ unsigned char res_reg[12];
+ unsigned int res_size;
+
+ do_sony_cd_cmd(SONY_AUDIO_STOP_CMD, NULL, 0, res_reg,
+ &res_size);
+ do_sony_cd_cmd(SONY_SPIN_DOWN_CMD, NULL, 0, res_reg,
+ &res_size);
+
+ sony_audio_status = CDROM_AUDIO_INVALID;
+ retval = do_sony_cd_cmd_chk("EJECT", SONY_EJECT_CMD, NULL, 0,
+ res_reg, &res_size);
+ } else {
+ if (0 == scd_spinup())
+ sony_spun_up = 1;
+ retval = 0;
+ }
+ up(&sony_sem);
+ return retval;
+}
+
+/*
+ * The big ugly ioctl handler.
+ */
+static int scd_audio_ioctl(struct cdrom_device_info *cdi,
+ unsigned int cmd, void *arg)
+{
+ unsigned char res_reg[12];
+ unsigned int res_size;
+ unsigned char params[7];
+ int i, retval;
+
+ if (down_interruptible(&sony_sem))
+ return -ERESTARTSYS;
+ switch (cmd) {
+ case CDROMSTART: /* Spin up the drive */
+ retval = do_sony_cd_cmd_chk("START", SONY_SPIN_UP_CMD, NULL,
+ 0, res_reg, &res_size);
+ break;
+
+ case CDROMSTOP: /* Spin down the drive */
+ do_sony_cd_cmd(SONY_AUDIO_STOP_CMD, NULL, 0, res_reg,
+ &res_size);
+
+ /*
+ * Spin the drive down, ignoring the error if the disk was
+ * already not spinning.
+ */
+ sony_audio_status = CDROM_AUDIO_NO_STATUS;
+ retval = do_sony_cd_cmd_chk("STOP", SONY_SPIN_DOWN_CMD, NULL,
+ 0, res_reg, &res_size);
+ break;
+
+ case CDROMPAUSE: /* Pause the drive */
+ if (do_sony_cd_cmd_chk
+ ("PAUSE", SONY_AUDIO_STOP_CMD, NULL, 0, res_reg,
+ &res_size)) {
+ retval = -EIO;
+ break;
+ }
+ /* Get the current position and save it for resuming */
+ if (read_subcode() < 0) {
+ retval = -EIO;
+ break;
+ }
+ 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;
+ retval = 0;
+ break;
+
+ case CDROMRESUME: /* Start the drive after being paused */
+ if (sony_audio_status != CDROM_AUDIO_PAUSED) {
+ retval = -EINVAL;
+ break;
+ }
+
+ do_sony_cd_cmd(SONY_SPIN_UP_CMD, NULL, 0, res_reg,
+ &res_size);
+
+ /* Start the drive at the saved position. */
+ params[1] = int_to_bcd(cur_pos_msf[0]);
+ params[2] = int_to_bcd(cur_pos_msf[1]);
+ params[3] = int_to_bcd(cur_pos_msf[2]);
+ params[4] = int_to_bcd(final_pos_msf[0]);
+ params[5] = int_to_bcd(final_pos_msf[1]);
+ params[6] = int_to_bcd(final_pos_msf[2]);
+ params[0] = 0x03;
+ if (do_sony_cd_cmd_chk
+ ("RESUME", SONY_AUDIO_PLAYBACK_CMD, params, 7, res_reg,
+ &res_size) < 0) {
+ retval = -EIO;
+ break;
+ }
+ sony_audio_status = CDROM_AUDIO_PLAY;
+ retval = 0;
+ break;
+
+ case CDROMPLAYMSF: /* Play starting at the given MSF address. */
+ do_sony_cd_cmd(SONY_SPIN_UP_CMD, NULL, 0, res_reg,
+ &res_size);
+
+ /* The parameters are given in int, must be converted */
+ for (i = 1; i < 7; i++) {
+ params[i] =
+ int_to_bcd(((unsigned char *) arg)[i - 1]);
+ }
+ params[0] = 0x03;
+ if (do_sony_cd_cmd_chk
+ ("PLAYMSF", SONY_AUDIO_PLAYBACK_CMD, params, 7,
+ res_reg, &res_size) < 0) {
+ retval = -EIO;
+ break;
+ }
+
+ /* Save the final position for pauses and resumes */
+ final_pos_msf[0] = bcd_to_int(params[4]);
+ final_pos_msf[1] = bcd_to_int(params[5]);
+ final_pos_msf[2] = bcd_to_int(params[6]);
+ sony_audio_status = CDROM_AUDIO_PLAY;
+ retval = 0;
+ break;
+
+ case CDROMREADTOCHDR: /* Read the table of contents header */
+ {
+ struct cdrom_tochdr *hdr;
+
+ sony_get_toc();
+ if (!sony_toc_read) {
+ retval = -EIO;
+ break;
+ }
+
+ hdr = (struct cdrom_tochdr *) arg;
+ hdr->cdth_trk0 = sony_toc.first_track_num;
+ hdr->cdth_trk1 = sony_toc.last_track_num;
+ }
+ retval = 0;
+ break;
+
+ case CDROMREADTOCENTRY: /* Read a given table of contents entry */
+ {
+ struct cdrom_tocentry *entry;
+ int track_idx;
+ unsigned char *msf_val = NULL;
+
+ sony_get_toc();
+ if (!sony_toc_read) {
+ retval = -EIO;
+ break;
+ }
+
+ entry = (struct cdrom_tocentry *) arg;
+
+ track_idx = find_track(entry->cdte_track);
+ if (track_idx < 0) {
+ retval = -EINVAL;
+ break;
+ }
+
+ entry->cdte_adr =
+ sony_toc.tracks[track_idx].address;
+ 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 (entry->cdte_format == CDROM_LBA) {
+ entry->cdte_addr.lba = msf_to_log(msf_val);
+ } else if (entry->cdte_format == CDROM_MSF) {
+ entry->cdte_addr.msf.minute = *msf_val;
+ entry->cdte_addr.msf.second =
+ *(msf_val + 1);
+ entry->cdte_addr.msf.frame =
+ *(msf_val + 2);
+ }
+ }
+ retval = 0;
+ break;
+
+ case CDROMPLAYTRKIND: /* Play a track. This currently ignores index. */
+ {
+ struct cdrom_ti *ti = (struct cdrom_ti *) arg;
+ int track_idx;
+
+ sony_get_toc();
+ if (!sony_toc_read) {
+ retval = -EIO;
+ break;
+ }
+
+ if ((ti->cdti_trk0 < sony_toc.first_track_num)
+ || (ti->cdti_trk0 > sony_toc.last_track_num)
+ || (ti->cdti_trk1 < ti->cdti_trk0)) {
+ retval = -EINVAL;
+ break;
+ }
+
+ track_idx = find_track(ti->cdti_trk0);
+ if (track_idx < 0) {
+ retval = -EINVAL;
+ break;
+ }
+ params[1] =
+ int_to_bcd(sony_toc.tracks[track_idx].
+ track_start_msf[0]);
+ params[2] =
+ int_to_bcd(sony_toc.tracks[track_idx].
+ track_start_msf[1]);
+ params[3] =
+ int_to_bcd(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 >= sony_toc.last_track_num) {
+ track_idx = find_track(CDROM_LEADOUT);
+ } else {
+ track_idx = find_track(ti->cdti_trk1 + 1);
+ }
+ if (track_idx < 0) {
+ retval = -EINVAL;
+ break;
+ }
+ params[4] =
+ int_to_bcd(sony_toc.tracks[track_idx].
+ track_start_msf[0]);
+ params[5] =
+ int_to_bcd(sony_toc.tracks[track_idx].
+ track_start_msf[1]);
+ params[6] =
+ int_to_bcd(sony_toc.tracks[track_idx].
+ track_start_msf[2]);
+ params[0] = 0x03;
+
+ do_sony_cd_cmd(SONY_SPIN_UP_CMD, NULL, 0, res_reg,
+ &res_size);
+
+ do_sony_cd_cmd(SONY_AUDIO_PLAYBACK_CMD, params, 7,
+ res_reg, &res_size);
+
+ if ((res_size < 2)
+ || ((res_reg[0] & 0xf0) == 0x20)) {
+ printk(KERN_ERR PFX
+ "Params: %x %x %x %x %x %x %x\n",
+ params[0], params[1], params[2],
+ params[3], params[4], params[5],
+ params[6]);
+ printk(KERN_ERR PFX
+ "Error %s (CDROMPLAYTRKIND)\n",
+ translate_error(res_reg[1]));
+ retval = -EIO;
+ break;
+ }
+
+ /* Save the final position for pauses and resumes */
+ final_pos_msf[0] = bcd_to_int(params[4]);
+ final_pos_msf[1] = bcd_to_int(params[5]);
+ final_pos_msf[2] = bcd_to_int(params[6]);
+ sony_audio_status = CDROM_AUDIO_PLAY;
+ retval = 0;
+ break;
+ }
+
+ case CDROMVOLCTRL: /* Volume control. What volume does this change, anyway? */
+ {
+ struct cdrom_volctrl *volctrl =
+ (struct cdrom_volctrl *) arg;
+
+ params[0] = SONY_SD_AUDIO_VOLUME;
+ params[1] = volctrl->channel0;
+ params[2] = volctrl->channel1;
+ retval = do_sony_cd_cmd_chk("VOLCTRL",
+ SONY_SET_DRIVE_PARAM_CMD,
+ params, 3, res_reg,
+ &res_size);
+ break;
+ }
+ case CDROMSUBCHNL: /* Get subchannel info */
+ retval = sony_get_subchnl_info((struct cdrom_subchnl *) arg);
+ break;
+
+ default:
+ retval = -EINVAL;
+ break;
+ }
+ up(&sony_sem);
+ return retval;
+}
+
+static int scd_dev_ioctl(struct cdrom_device_info *cdi,
+ unsigned int cmd, unsigned long arg)
+{
+ void __user *argp = (void __user *)arg;
+ int retval;
+
+ if (down_interruptible(&sony_sem))
+ return -ERESTARTSYS;
+ switch (cmd) {
+ case CDROMREADAUDIO: /* Read 2352 byte audio tracks and 2340 byte
+ raw data tracks. */
+ {
+ struct cdrom_read_audio ra;
+
+
+ sony_get_toc();
+ if (!sony_toc_read) {
+ retval = -EIO;
+ break;
+ }
+
+ if (copy_from_user(&ra, argp, sizeof(ra))) {
+ retval = -EFAULT;
+ break;
+ }
+
+ if (ra.nframes == 0) {
+ retval = 0;
+ break;
+ }
+
+ if (!access_ok(VERIFY_WRITE, ra.buf,
+ CD_FRAMESIZE_RAW * ra.nframes))
+ return -EFAULT;
+
+ if (ra.addr_format == CDROM_LBA) {
+ if ((ra.addr.lba >=
+ sony_toc.lead_out_start_lba)
+ || (ra.addr.lba + ra.nframes >=
+ sony_toc.lead_out_start_lba)) {
+ retval = -EINVAL;
+ break;
+ }
+ } else if (ra.addr_format == CDROM_MSF) {
+ if ((ra.addr.msf.minute >= 75)
+ || (ra.addr.msf.second >= 60)
+ || (ra.addr.msf.frame >= 75)) {
+ retval = -EINVAL;
+ break;
+ }
+
+ ra.addr.lba = ((ra.addr.msf.minute * 4500)
+ + (ra.addr.msf.second * 75)
+ + ra.addr.msf.frame);
+ if ((ra.addr.lba >=
+ sony_toc.lead_out_start_lba)
+ || (ra.addr.lba + ra.nframes >=
+ sony_toc.lead_out_start_lba)) {
+ retval = -EINVAL;
+ break;
+ }
+
+ /* I know, this can go negative on an unsigned. However,
+ the first thing done to the data is to add this value,
+ so this should compensate and allow direct msf access. */
+ ra.addr.lba -= LOG_START_OFFSET;
+ } else {
+ retval = -EINVAL;
+ break;
+ }
+
+ retval = read_audio(&ra);
+ break;
+ }
+ retval = 0;
+ break;
+
+ default:
+ retval = -EINVAL;
+ }
+ up(&sony_sem);
+ return retval;
+}
+
+static int scd_spinup(void)
+{
+ unsigned char res_reg[12];
+ unsigned int res_size;
+ int num_spin_ups;
+
+ num_spin_ups = 0;
+
+ respinup_on_open:
+ do_sony_cd_cmd(SONY_SPIN_UP_CMD, NULL, 0, res_reg, &res_size);
+
+ /* The drive sometimes returns error 0. I don't know why, but ignore
+ it. It seems to mean the drive has already done the operation. */
+ if ((res_size < 2) || ((res_reg[0] != 0) && (res_reg[1] != 0))) {
+ printk(KERN_ERR PFX "%s error (scd_open, spin up)\n",
+ translate_error(res_reg[1]));
+ return 1;
+ }
+
+ do_sony_cd_cmd(SONY_READ_TOC_CMD, NULL, 0, res_reg, &res_size);
+
+ /* The drive sometimes returns error 0. I don't know why, but ignore
+ it. It seems to mean the drive has already done the operation. */
+ if ((res_size < 2) || ((res_reg[0] != 0) && (res_reg[1] != 0))) {
+ /* If the drive is already playing, it's ok. */
+ if ((res_reg[1] == SONY_AUDIO_PLAYING_ERR)
+ || (res_reg[1] == 0)) {
+ return 0;
+ }
+
+ /* If the drive says it is not spun up (even though we just did it!)
+ then retry the operation at least a few times. */
+ if ((res_reg[1] == SONY_NOT_SPIN_ERR)
+ && (num_spin_ups < MAX_CDU31A_RETRIES)) {
+ num_spin_ups++;
+ goto respinup_on_open;
+ }
+
+ printk(KERN_ERR PFX "Error %s (scd_open, read toc)\n",
+ translate_error(res_reg[1]));
+ do_sony_cd_cmd(SONY_SPIN_DOWN_CMD, NULL, 0, res_reg,
+ &res_size);
+ return 1;
+ }
+ return 0;
+}
+
+/*
+ * 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 cdrom_device_info *cdi, int purpose)
+{
+ unsigned char res_reg[12];
+ unsigned int res_size;
+ unsigned char params[2];
+
+ if (purpose == 1) {
+ /* Open for IOCTLs only - no media check */
+ sony_usage++;
+ return 0;
+ }
+
+ if (sony_usage == 0) {
+ if (scd_spinup() != 0)
+ return -EIO;
+ sony_get_toc();
+ if (!sony_toc_read) {
+ do_sony_cd_cmd(SONY_SPIN_DOWN_CMD, NULL, 0,
+ res_reg, &res_size);
+ return -EIO;
+ }
+
+ /* For XA on the CDU31A only, we have to do special reads.
+ The CDU33A handles XA automagically. */
+ /* if ( (sony_toc.disk_type == SONY_XA_DISK_TYPE) */
+ if ((sony_toc.disk_type != 0x00)
+ && (!is_double_speed)) {
+ params[0] = SONY_SD_DECODE_PARAM;
+ params[1] = 0x07;
+ do_sony_cd_cmd(SONY_SET_DRIVE_PARAM_CMD,
+ params, 2, res_reg, &res_size);
+ if ((res_size < 2)
+ || ((res_reg[0] & 0xf0) == 0x20)) {
+ printk(KERN_WARNING PFX "Unable to set "
+ "XA params: 0x%2.2x\n", res_reg[1]);
+ }
+ sony_xa_mode = 1;
+ }
+ /* A non-XA disk. Set the parms back if necessary. */
+ else if (sony_xa_mode) {
+ params[0] = SONY_SD_DECODE_PARAM;
+ params[1] = 0x0f;
+ do_sony_cd_cmd(SONY_SET_DRIVE_PARAM_CMD,
+ params, 2, res_reg, &res_size);
+ if ((res_size < 2)
+ || ((res_reg[0] & 0xf0) == 0x20)) {
+ printk(KERN_WARNING PFX "Unable to reset "
+ "XA params: 0x%2.2x\n", res_reg[1]);
+ }
+ sony_xa_mode = 0;
+ }
+
+ sony_spun_up = 1;
+ }
+
+ sony_usage++;
+
+ 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 cdrom_device_info *cdi)
+{
+ if (sony_usage == 1) {
+ unsigned char res_reg[12];
+ unsigned int res_size;
+
+ do_sony_cd_cmd(SONY_SPIN_DOWN_CMD, NULL, 0, res_reg,
+ &res_size);
+
+ sony_spun_up = 0;
+ }
+ sony_usage--;
+}
+
+static struct cdrom_device_ops scd_dops = {
+ .open = scd_open,
+ .release = scd_release,
+ .drive_status = scd_drive_status,
+ .media_changed = scd_media_changed,
+ .tray_move = scd_tray_move,
+ .lock_door = scd_lock_door,
+ .select_speed = scd_select_speed,
+ .get_last_session = scd_get_last_session,
+ .get_mcn = scd_get_mcn,
+ .reset = scd_reset,
+ .audio_ioctl = scd_audio_ioctl,
+ .dev_ioctl = scd_dev_ioctl,
+ .capability = CDC_OPEN_TRAY | CDC_CLOSE_TRAY | CDC_LOCK |
+ CDC_SELECT_SPEED | CDC_MULTI_SESSION |
+ CDC_MCN | CDC_MEDIA_CHANGED | CDC_PLAY_AUDIO |
+ CDC_RESET | CDC_IOCTLS | CDC_DRIVE_STATUS,
+ .n_minors = 1,
+};
+
+static struct cdrom_device_info scd_info = {
+ .ops = &scd_dops,
+ .speed = 2,
+ .capacity = 1,
+ .name = "cdu31a"
+};
+
+static int scd_block_open(struct inode *inode, struct file *file)
+{
+ return cdrom_open(&scd_info, inode, file);
+}
+
+static int scd_block_release(struct inode *inode, struct file *file)
+{
+ return cdrom_release(&scd_info, file);
+}
+
+static int scd_block_ioctl(struct inode *inode, struct file *file,
+ unsigned cmd, unsigned long arg)
+{
+ int retval;
+
+ /* The eject and close commands should be handled by Uniform CD-ROM
+ * driver - but I always got hard lockup instead of eject
+ * until I put this here.
+ */
+ switch (cmd) {
+ case CDROMEJECT:
+ scd_lock_door(&scd_info, 0);
+ retval = scd_tray_move(&scd_info, 1);
+ break;
+ case CDROMCLOSETRAY:
+ retval = scd_tray_move(&scd_info, 0);
+ break;
+ default:
+ retval = cdrom_ioctl(file, &scd_info, inode, cmd, arg);
+ }
+ return retval;
+}
+
+static int scd_block_media_changed(struct gendisk *disk)
+{
+ return cdrom_media_changed(&scd_info);
+}
+
+struct block_device_operations scd_bdops =
+{
+ .owner = THIS_MODULE,
+ .open = scd_block_open,
+ .release = scd_block_release,
+ .ioctl = scd_block_ioctl,
+ .media_changed = scd_block_media_changed,
+};
+
+static struct gendisk *scd_gendisk;
+
+/* The different types of disc loading mechanisms supported */
+static char *load_mech[] __initdata =
+ { "caddy", "tray", "pop-up", "unknown" };
+
+static int __init
+get_drive_configuration(unsigned short base_io,
+ unsigned char res_reg[], unsigned int *res_size)
+{
+ unsigned long retry_count;
+
+
+ if (!request_region(base_io, 4, "cdu31a"))
+ return 0;
+
+ /* Set the base address */
+ cdu31a_port = base_io;
+
+ /* Set up all the register locations */
+ sony_cd_cmd_reg = cdu31a_port + SONY_CMD_REG_OFFSET;
+ sony_cd_param_reg = cdu31a_port + SONY_PARAM_REG_OFFSET;
+ sony_cd_write_reg = cdu31a_port + SONY_WRITE_REG_OFFSET;
+ sony_cd_control_reg = cdu31a_port + SONY_CONTROL_REG_OFFSET;
+ sony_cd_status_reg = cdu31a_port + SONY_STATUS_REG_OFFSET;
+ sony_cd_result_reg = cdu31a_port + SONY_RESULT_REG_OFFSET;
+ sony_cd_read_reg = cdu31a_port + SONY_READ_REG_OFFSET;
+ sony_cd_fifost_reg = cdu31a_port + SONY_FIFOST_REG_OFFSET;
+
+ /*
+ * Check to see if anything exists at the status register location.
+ * I don't know if this is a good way to check, but it seems to work
+ * ok for me.
+ */
+ if (read_status_register() != 0xff) {
+ /*
+ * Reset the drive and wait for attention from it (to say it's reset).
+ * If you don't wait, the next operation will probably fail.
+ */
+ reset_drive();
+ retry_count = jiffies + SONY_RESET_TIMEOUT;
+ while (time_before(jiffies, retry_count)
+ && (!is_attention())) {
+ sony_sleep();
+ }
+
+#if 0
+ /* If attention is never seen probably not a CDU31a present */
+ if (!is_attention()) {
+ res_reg[0] = 0x20;
+ goto out_err;
+ }
+#endif
+
+ /*
+ * Get the drive configuration.
+ */
+ do_sony_cd_cmd(SONY_REQ_DRIVE_CONFIG_CMD,
+ NULL,
+ 0, (unsigned char *) res_reg, res_size);
+ if (*res_size <= 2 || (res_reg[0] & 0xf0) != 0)
+ goto out_err;
+ return 1;
+ }
+
+ /* Return an error */
+ res_reg[0] = 0x20;
+out_err:
+ release_region(cdu31a_port, 4);
+ cdu31a_port = 0;
+ return 0;
+}
+
+#ifndef MODULE
+/*
+ * Set up base I/O and interrupts, called from main.c.
+ */
+
+static int __init cdu31a_setup(char *strings)
+{
+ int ints[4];
+
+ (void) get_options(strings, ARRAY_SIZE(ints), ints);
+
+ if (ints[0] > 0) {
+ cdu31a_port = ints[1];
+ }
+ if (ints[0] > 1) {
+ cdu31a_irq = ints[2];
+ }
+ if ((strings != NULL) && (*strings != '\0')) {
+ if (strcmp(strings, "PAS") == 0) {
+ sony_pas_init = 1;
+ } else {
+ printk(KERN_NOTICE PFX "Unknown interface type: %s\n",
+ strings);
+ }
+ }
+
+ return 1;
+}
+
+__setup("cdu31a=", cdu31a_setup);
+
+#endif
+
+/*
+ * Initialize the driver.
+ */
+int __init cdu31a_init(void)
+{
+ struct s_sony_drive_config drive_config;
+ struct gendisk *disk;
+ int deficiency = 0;
+ unsigned int res_size;
+ char msg[255];
+ char buf[40];
+ int i;
+ int tmp_irq;
+
+ /*
+ * According to Alex Freed (freed@europa.orion.adobe.com), this is
+ * required for the Fusion CD-16 package. If the sound driver is
+ * loaded, it should work fine, but just in case...
+ *
+ * The following turn on the CD-ROM interface for a Fusion CD-16.
+ */
+ if (sony_pas_init) {
+ outb(0xbc, 0x9a01);
+ outb(0xe2, 0x9a01);
+ }
+
+ /* Setting the base I/O address to 0xffff will disable it. */
+ if (cdu31a_port == 0xffff)
+ goto errout3;
+
+ if (cdu31a_port != 0) {
+ /* Need IRQ 0 because we can't sleep here. */
+ tmp_irq = cdu31a_irq;
+ cdu31a_irq = 0;
+ if (!get_drive_configuration(cdu31a_port,
+ drive_config.exec_status,
+ &res_size))
+ goto errout3;
+ cdu31a_irq = tmp_irq;
+ } else {
+ cdu31a_irq = 0;
+ for (i = 0; cdu31a_addresses[i].base; i++) {
+ if (get_drive_configuration(cdu31a_addresses[i].base,
+ drive_config.exec_status,
+ &res_size)) {
+ cdu31a_irq = cdu31a_addresses[i].int_num;
+ break;
+ }
+ }
+ if (!cdu31a_port)
+ goto errout3;
+ }
+
+ if (register_blkdev(MAJOR_NR, "cdu31a"))
+ goto errout2;
+
+ disk = alloc_disk(1);
+ if (!disk)
+ goto errout1;
+ disk->major = MAJOR_NR;
+ disk->first_minor = 0;
+ sprintf(disk->disk_name, "cdu31a");
+ disk->fops = &scd_bdops;
+ disk->flags = GENHD_FL_CD;
+
+ if (SONY_HWC_DOUBLE_SPEED(drive_config))
+ is_double_speed = 1;
+
+ tmp_irq = cdu31a_irq; /* Need IRQ 0 because we can't sleep here. */
+ cdu31a_irq = 0;
+
+ sony_speed = is_double_speed; /* Set 2X drives to 2X by default */
+ set_drive_params(sony_speed);
+
+ cdu31a_irq = tmp_irq;
+
+ if (cdu31a_irq > 0) {
+ if (request_irq
+ (cdu31a_irq, cdu31a_interrupt, SA_INTERRUPT,
+ "cdu31a", NULL)) {
+ printk(KERN_WARNING PFX "Unable to grab IRQ%d for "
+ "the CDU31A driver\n", cdu31a_irq);
+ cdu31a_irq = 0;
+ }
+ }
+
+ sprintf(msg, "Sony I/F CDROM : %8.8s %16.16s %8.8s\n",
+ drive_config.vendor_id,
+ drive_config.product_id,
+ drive_config.product_rev_level);
+ sprintf(buf, " Capabilities: %s",
+ load_mech[SONY_HWC_GET_LOAD_MECH(drive_config)]);
+ strcat(msg, buf);
+ if (SONY_HWC_AUDIO_PLAYBACK(drive_config))
+ strcat(msg, ", audio");
+ else
+ deficiency |= CDC_PLAY_AUDIO;
+ if (SONY_HWC_EJECT(drive_config))
+ strcat(msg, ", eject");
+ else
+ deficiency |= CDC_OPEN_TRAY;
+ if (SONY_HWC_LED_SUPPORT(drive_config))
+ strcat(msg, ", LED");
+ if (SONY_HWC_ELECTRIC_VOLUME(drive_config))
+ strcat(msg, ", elec. Vol");
+ if (SONY_HWC_ELECTRIC_VOLUME_CTL(drive_config))
+ strcat(msg, ", sep. Vol");
+ if (is_double_speed)
+ strcat(msg, ", double speed");
+ else
+ deficiency |= CDC_SELECT_SPEED;
+ if (cdu31a_irq > 0) {
+ sprintf(buf, ", irq %d", cdu31a_irq);
+ strcat(msg, buf);
+ }
+ strcat(msg, "\n");
+ printk(KERN_INFO PFX "%s",msg);
+
+ cdu31a_queue = blk_init_queue(do_cdu31a_request, &cdu31a_lock);
+ if (!cdu31a_queue)
+ goto errout0;
+ blk_queue_hardsect_size(cdu31a_queue, 2048);
+
+ init_timer(&cdu31a_abort_timer);
+ cdu31a_abort_timer.function = handle_abort_timeout;
+
+ scd_info.mask = deficiency;
+ scd_gendisk = disk;
+ if (register_cdrom(&scd_info))
+ goto err;
+ disk->queue = cdu31a_queue;
+ add_disk(disk);
+
+ disk_changed = 1;
+ return 0;
+
+err:
+ blk_cleanup_queue(cdu31a_queue);
+errout0:
+ if (cdu31a_irq)
+ free_irq(cdu31a_irq, NULL);
+ printk(KERN_ERR PFX "Unable to register with Uniform cdrom driver\n");
+ put_disk(disk);
+errout1:
+ if (unregister_blkdev(MAJOR_NR, "cdu31a")) {
+ printk(KERN_WARNING PFX "Can't unregister block device\n");
+ }
+errout2:
+ release_region(cdu31a_port, 4);
+errout3:
+ return -EIO;
+}
+
+
+void __exit cdu31a_exit(void)
+{
+ del_gendisk(scd_gendisk);
+ put_disk(scd_gendisk);
+ if (unregister_cdrom(&scd_info)) {
+ printk(KERN_WARNING PFX "Can't unregister from Uniform "
+ "cdrom driver\n");
+ return;
+ }
+ if ((unregister_blkdev(MAJOR_NR, "cdu31a") == -EINVAL)) {
+ printk(KERN_WARNING PFX "Can't unregister\n");
+ return;
+ }
+
+ blk_cleanup_queue(cdu31a_queue);
+
+ if (cdu31a_irq > 0)
+ free_irq(cdu31a_irq, NULL);
+
+ release_region(cdu31a_port, 4);
+ printk(KERN_INFO PFX "module released.\n");
+}
+
+#ifdef MODULE
+module_init(cdu31a_init);
+#endif
+module_exit(cdu31a_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_ALIAS_BLOCKDEV_MAJOR(CDU31A_CDROM_MAJOR);