diff options
Diffstat (limited to 'drivers/cdrom/cdu31a.c')
| -rw-r--r-- | drivers/cdrom/cdu31a.c | 3251 |
1 files changed, 0 insertions, 3251 deletions
diff --git a/drivers/cdrom/cdu31a.c b/drivers/cdrom/cdu31a.c deleted file mode 100644 index 2157c58755e..00000000000 --- a/drivers/cdrom/cdu31a.c +++ /dev/null @@ -1,3251 +0,0 @@ -/* -* 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/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. */ -static 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) -{ - 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 (!blk_fs_request(req)) { - end_request(req, 0); - 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, 1); - 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_read_audio(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, - .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_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; - case CDROMREADAUDIO: - retval = scd_read_audio(&scd_info, CDROMREADAUDIO, arg); - 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); -} - -static 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, IRQF_DISABLED, - "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; -} - - -static 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); |