diff options
| author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
| commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
| tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/cdrom/cdu31a.c | |
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!
Diffstat (limited to 'drivers/cdrom/cdu31a.c')
| -rw-r--r-- | drivers/cdrom/cdu31a.c | 3248 |
1 files changed, 3248 insertions, 0 deletions
diff --git a/drivers/cdrom/cdu31a.c b/drivers/cdrom/cdu31a.c new file mode 100644 index 00000000000..647a71b12a2 --- /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); |