| /* |
| * 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. */ |
| 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, 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); |
| } |
| |
| 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, 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 |