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kernel / pub / scm / linux / kernel / git / joro / linux / 5e4b50795ee8c7659a1181cea4c98712e02ea63e / . / drivers / ide / ide-floppy.c
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/*
* linux/drivers/ide/ide-floppy.c Version 0.97.sv Jan 14 2001
*
* Copyright (C) 1996 - 1999 Gadi Oxman <gadio@netvision.net.il>
* Copyright (C) 2000 - 2001 Paul Bristow <paul@paulbristow.net>
*/
/*
* IDE ATAPI floppy driver.
*
* The driver currently doesn't have any fancy features, just the bare
* minimum read/write support.
*
* This driver supports the following IDE floppy drives:
*
* LS-120 SuperDisk
* Iomega Zip 100/250
* Iomega PC Card Clik!/PocketZip
*
* Many thanks to Lode Leroy <Lode.Leroy@www.ibase.be>, who tested so many
* ALPHA patches to this driver on an EASYSTOR LS-120 ATAPI floppy drive.
*
* Ver 0.1 Oct 17 96 Initial test version, mostly based on ide-tape.c.
* Ver 0.2 Oct 31 96 Minor changes.
* Ver 0.3 Dec 2 96 Fixed error recovery bug.
* Ver 0.4 Jan 26 97 Add support for the HDIO_GETGEO ioctl.
* Ver 0.5 Feb 21 97 Add partitions support.
* Use the minimum of the LBA and CHS capacities.
* Avoid hwgroup->rq == NULL on the last irq.
* Fix potential null dereferencing with DEBUG_LOG.
* Ver 0.8 Dec 7 97 Increase irq timeout from 10 to 50 seconds.
* Add media write-protect detection.
* Issue START command only if TEST UNIT READY fails.
* Add work-around for IOMEGA ZIP revision 21.D.
* Remove idefloppy_get_capabilities().
* Ver 0.9 Jul 4 99 Fix a bug which might have caused the number of
* bytes requested on each interrupt to be zero.
* Thanks to <shanos@es.co.nz> for pointing this out.
* Ver 0.9.sv Jan 6 01 Sam Varshavchik <mrsam@courier-mta.com>
* Implement low level formatting. Reimplemented
* IDEFLOPPY_CAPABILITIES_PAGE, since we need the srfp
* bit. My LS-120 drive barfs on
* IDEFLOPPY_CAPABILITIES_PAGE, but maybe it's just me.
* Compromise by not reporting a failure to get this
* mode page. Implemented four IOCTLs in order to
* implement formatting. IOCTls begin with 0x4600,
* 0x46 is 'F' as in Format.
* Jan 9 01 Userland option to select format verify.
* Added PC_SUPPRESS_ERROR flag - some idefloppy drives
* do not implement IDEFLOPPY_CAPABILITIES_PAGE, and
* return a sense error. Suppress error reporting in
* this particular case in order to avoid spurious
* errors in syslog. The culprit is
* idefloppy_get_capability_page(), so move it to
* idefloppy_begin_format() so that it's not used
* unless absolutely necessary.
* If drive does not support format progress indication
* monitor the dsc bit in the status register.
* Also, O_NDELAY on open will allow the device to be
* opened without a disk available. This can be used to
* open an unformatted disk, or get the device capacity.
* Ver 0.91 Dec 11 99 Added IOMEGA Clik! drive support by
* <paul@paulbristow.net>
* Ver 0.92 Oct 22 00 Paul Bristow became official maintainer for this
* driver. Included Powerbook internal zip kludge.
* Ver 0.93 Oct 24 00 Fixed bugs for Clik! drive
* no disk on insert and disk change now works
* Ver 0.94 Oct 27 00 Tidied up to remove strstr(Clik) everywhere
* Ver 0.95 Nov 7 00 Brought across to kernel 2.4
* Ver 0.96 Jan 7 01 Actually in line with release version of 2.4.0
* including set_bit patch from Rusty Russel
* Ver 0.97 Jul 22 01 Merge 0.91-0.96 onto 0.9.sv for ac series
* Ver 0.97.sv Aug 3 01 Backported from 2.4.7-ac3
* Ver 0.98 Oct 26 01 Split idefloppy_transfer_pc into two pieces to
* fix a lost interrupt problem. It appears the busy
* bit was being deasserted by my IOMEGA ATAPI ZIP 100
* drive before the drive was actually ready.
* Ver 0.98a Oct 29 01 Expose delay value so we can play.
*/
#define IDEFLOPPY_VERSION "0.98a"
#include <linux/config.h>
#include <linux/module.h>
#include <linux/types.h>
#include <linux/string.h>
#include <linux/kernel.h>
#include <linux/delay.h>
#include <linux/timer.h>
#include <linux/mm.h>
#include <linux/interrupt.h>
#include <linux/major.h>
#include <linux/errno.h>
#include <linux/genhd.h>
#include <linux/slab.h>
#include <linux/cdrom.h>
#include <linux/ide.h>
#include <asm/byteorder.h>
#include <asm/irq.h>
#include <asm/uaccess.h>
#include <asm/io.h>
#include <asm/unaligned.h>
#include <asm/bitops.h>
/*
* The following are used to debug the driver.
*/
#define IDEFLOPPY_DEBUG_LOG 0
#define IDEFLOPPY_DEBUG_INFO 0
#define IDEFLOPPY_DEBUG_BUGS 1
/* #define IDEFLOPPY_DEBUG(fmt, args...) printk(KERN_INFO fmt, ## args) */
#define IDEFLOPPY_DEBUG( fmt, args... )
/*
* Some drives require a longer irq timeout.
*/
#define IDEFLOPPY_WAIT_CMD (5 * WAIT_CMD)
/*
* After each failed packet command we issue a request sense command
* and retry the packet command IDEFLOPPY_MAX_PC_RETRIES times.
*/
#define IDEFLOPPY_MAX_PC_RETRIES 3
/*
* With each packet command, we allocate a buffer of
* IDEFLOPPY_PC_BUFFER_SIZE bytes.
*/
#define IDEFLOPPY_PC_BUFFER_SIZE 256
/*
* In various places in the driver, we need to allocate storage
* for packet commands and requests, which will remain valid while
* we leave the driver to wait for an interrupt or a timeout event.
*/
#define IDEFLOPPY_PC_STACK (10 + IDEFLOPPY_MAX_PC_RETRIES)
/*
* Our view of a packet command.
*/
typedef struct idefloppy_packet_command_s {
u8 c[12]; /* Actual packet bytes */
int retries; /* On each retry, we increment retries */
int error; /* Error code */
int request_transfer; /* Bytes to transfer */
int actually_transferred; /* Bytes actually transferred */
int buffer_size; /* Size of our data buffer */
char *b_data; /* Pointer which runs on the buffers */
int b_count; /* Missing/Available data on the current buffer */
struct request *rq; /* The corresponding request */
byte *buffer; /* Data buffer */
byte *current_position; /* Pointer into the above buffer */
void (*callback) (ide_drive_t *); /* Called when this packet command is completed */
byte pc_buffer[IDEFLOPPY_PC_BUFFER_SIZE]; /* Temporary buffer */
unsigned long flags; /* Status/Action bit flags: long for set_bit */
} idefloppy_pc_t;
/*
* Packet command flag bits.
*/
#define PC_ABORT 0 /* Set when an error is considered normal - We won't retry */
#define PC_DMA_RECOMMENDED 2 /* 1 when we prefer to use DMA if possible */
#define PC_DMA_IN_PROGRESS 3 /* 1 while DMA in progress */
#define PC_DMA_ERROR 4 /* 1 when encountered problem during DMA */
#define PC_WRITING 5 /* Data direction */
#define PC_SUPPRESS_ERROR 6 /* Suppress error reporting */
/*
* Removable Block Access Capabilities Page
*/
typedef struct {
#if defined(__LITTLE_ENDIAN_BITFIELD)
unsigned page_code :6; /* Page code - Should be 0x1b */
unsigned reserved1_6 :1; /* Reserved */
unsigned ps :1; /* Should be 0 */
#elif defined(__BIG_ENDIAN_BITFIELD)
unsigned ps :1; /* Should be 0 */
unsigned reserved1_6 :1; /* Reserved */
unsigned page_code :6; /* Page code - Should be 0x1b */
#else
#error "Bitfield endianness not defined! Check your byteorder.h"
#endif
u8 page_length; /* Page Length - Should be 0xa */
#if defined(__LITTLE_ENDIAN_BITFIELD)
unsigned reserved2 :6;
unsigned srfp :1; /* Supports reporting progress of format */
unsigned sflp :1; /* System floppy type device */
unsigned tlun :3; /* Total logical units supported by the device */
unsigned reserved3 :3;
unsigned sml :1; /* Single / Multiple lun supported */
unsigned ncd :1; /* Non cd optical device */
#elif defined(__BIG_ENDIAN_BITFIELD)
unsigned sflp :1; /* System floppy type device */
unsigned srfp :1; /* Supports reporting progress of format */
unsigned reserved2 :6;
unsigned ncd :1; /* Non cd optical device */
unsigned sml :1; /* Single / Multiple lun supported */
unsigned reserved3 :3;
unsigned tlun :3; /* Total logical units supported by the device */
#else
#error "Bitfield endianness not defined! Check your byteorder.h"
#endif
u8 reserved[8];
} idefloppy_capabilities_page_t;
/*
* Flexible disk page.
*/
typedef struct {
#if defined(__LITTLE_ENDIAN_BITFIELD)
unsigned page_code :6; /* Page code - Should be 0x5 */
unsigned reserved1_6 :1; /* Reserved */
unsigned ps :1; /* The device is capable of saving the page */
#elif defined(__BIG_ENDIAN_BITFIELD)
unsigned ps :1; /* The device is capable of saving the page */
unsigned reserved1_6 :1; /* Reserved */
unsigned page_code :6; /* Page code - Should be 0x5 */
#else
#error "Bitfield endianness not defined! Check your byteorder.h"
#endif
u8 page_length; /* Page Length - Should be 0x1e */
u16 transfer_rate; /* In kilobits per second */
u8 heads, sectors; /* Number of heads, Number of sectors per track */
u16 sector_size; /* Byes per sector */
u16 cyls; /* Number of cylinders */
u8 reserved10[10];
u8 motor_delay; /* Motor off delay */
u8 reserved21[7];
u16 rpm; /* Rotations per minute */
u8 reserved30[2];
} idefloppy_flexible_disk_page_t;
/*
* Format capacity
*/
typedef struct {
u8 reserved[3];
u8 length; /* Length of the following descriptors in bytes */
} idefloppy_capacity_header_t;
typedef struct {
u32 blocks; /* Number of blocks */
#if defined(__LITTLE_ENDIAN_BITFIELD)
unsigned dc :2; /* Descriptor Code */
unsigned reserved :6;
#elif defined(__BIG_ENDIAN_BITFIELD)
unsigned reserved :6;
unsigned dc :2; /* Descriptor Code */
#else
#error "Bitfield endianness not defined! Check your byteorder.h"
#endif
u8 length_msb; /* Block Length (MSB)*/
u16 length; /* Block Length */
} idefloppy_capacity_descriptor_t;
#define CAPACITY_INVALID 0x00
#define CAPACITY_UNFORMATTED 0x01
#define CAPACITY_CURRENT 0x02
#define CAPACITY_NO_CARTRIDGE 0x03
/*
* Most of our global data which we need to save even as we leave the
* driver due to an interrupt or a timer event is stored in a variable
* of type idefloppy_floppy_t, defined below.
*/
typedef struct {
ide_drive_t *drive;
idefloppy_pc_t *pc; /* Current packet command */
idefloppy_pc_t *failed_pc; /* Last failed packet command */
idefloppy_pc_t pc_stack[IDEFLOPPY_PC_STACK];/* Packet command stack */
int pc_stack_index; /* Next free packet command storage space */
struct request rq_stack[IDEFLOPPY_PC_STACK];
int rq_stack_index; /* We implement a circular array */
/*
* Last error information
*/
byte sense_key, asc, ascq;
byte ticks; /* delay this long before sending packet command */
int progress_indication;
/*
* Device information
*/
int blocks, block_size, bs_factor; /* Current format */
idefloppy_capacity_descriptor_t capacity; /* Last format capacity */
idefloppy_flexible_disk_page_t flexible_disk_page; /* Copy of the flexible disk page */
int wp; /* Write protect */
int srfp; /* Supports format progress report */
unsigned long flags; /* Status/Action flags */
} idefloppy_floppy_t;
#define IDEFLOPPY_TICKS_DELAY 3 /* default delay for ZIP 100 */
/*
* Floppy flag bits values.
*/
#define IDEFLOPPY_DRQ_INTERRUPT 0 /* DRQ interrupt device */
#define IDEFLOPPY_MEDIA_CHANGED 1 /* Media may have changed */
#define IDEFLOPPY_USE_READ12 2 /* Use READ12/WRITE12 or READ10/WRITE10 */
#define IDEFLOPPY_FORMAT_IN_PROGRESS 3 /* Format in progress */
#define IDEFLOPPY_CLIK_DRIVE 4 /* Avoid commands not supported in Clik drive */
#define IDEFLOPPY_ZIP_DRIVE 5 /* Requires BH algorithm for packets */
/*
* ATAPI floppy drive packet commands
*/
#define IDEFLOPPY_FORMAT_UNIT_CMD 0x04
#define IDEFLOPPY_INQUIRY_CMD 0x12
#define IDEFLOPPY_MODE_SELECT_CMD 0x55
#define IDEFLOPPY_MODE_SENSE_CMD 0x5a
#define IDEFLOPPY_READ10_CMD 0x28
#define IDEFLOPPY_READ12_CMD 0xa8
#define IDEFLOPPY_READ_CAPACITY_CMD 0x23
#define IDEFLOPPY_REQUEST_SENSE_CMD 0x03
#define IDEFLOPPY_PREVENT_REMOVAL_CMD 0x1e
#define IDEFLOPPY_SEEK_CMD 0x2b
#define IDEFLOPPY_START_STOP_CMD 0x1b
#define IDEFLOPPY_TEST_UNIT_READY_CMD 0x00
#define IDEFLOPPY_VERIFY_CMD 0x2f
#define IDEFLOPPY_WRITE10_CMD 0x2a
#define IDEFLOPPY_WRITE12_CMD 0xaa
#define IDEFLOPPY_WRITE_VERIFY_CMD 0x2e
/*
* Defines for the mode sense command
*/
#define MODE_SENSE_CURRENT 0x00
#define MODE_SENSE_CHANGEABLE 0x01
#define MODE_SENSE_DEFAULT 0x02
#define MODE_SENSE_SAVED 0x03
/*
* IOCTLs used in low-level formatting.
*/
#define IDEFLOPPY_IOCTL_FORMAT_SUPPORTED 0x4600
#define IDEFLOPPY_IOCTL_FORMAT_GET_CAPACITY 0x4601
#define IDEFLOPPY_IOCTL_FORMAT_START 0x4602
#define IDEFLOPPY_IOCTL_FORMAT_GET_PROGRESS 0x4603
#define IDEFLOPPY_RQ (REQ_SPECIAL)
/*
* Error codes which are returned in rq->errors to the higher part
* of the driver.
*/
#define IDEFLOPPY_ERROR_GENERAL 101
/*
* The ATAPI Status Register.
*/
typedef union {
unsigned all :8;
struct {
#if defined(__LITTLE_ENDIAN_BITFIELD)
unsigned check :1; /* Error occurred */
unsigned idx :1; /* Reserved */
unsigned corr :1; /* Correctable error occurred */
unsigned drq :1; /* Data is request by the device */
unsigned dsc :1; /* Media access command finished */
unsigned reserved5 :1; /* Reserved */
unsigned drdy :1; /* Ignored for ATAPI commands (ready to accept ATA command) */
unsigned bsy :1; /* The device has access to the command block */
#elif defined(__BIG_ENDIAN_BITFIELD)
unsigned bsy :1; /* The device has access to the command block */
unsigned drdy :1; /* Ignored for ATAPI commands (ready to accept ATA command) */
unsigned reserved5 :1; /* Reserved */
unsigned dsc :1; /* Media access command finished */
unsigned drq :1; /* Data is request by the device */
unsigned corr :1; /* Correctable error occurred */
unsigned idx :1; /* Reserved */
unsigned check :1; /* Error occurred */
#else
#error "Bitfield endianness not defined! Check your byteorder.h"
#endif
} b;
} idefloppy_status_reg_t;
/*
* The ATAPI error register.
*/
typedef union {
unsigned all :8;
struct {
#if defined(__LITTLE_ENDIAN_BITFIELD)
unsigned ili :1; /* Illegal Length Indication */
unsigned eom :1; /* End Of Media Detected */
unsigned abrt :1; /* Aborted command - As defined by ATA */
unsigned mcr :1; /* Media Change Requested - As defined by ATA */
unsigned sense_key :4; /* Sense key of the last failed packet command */
#elif defined(__BIG_ENDIAN_BITFIELD)
unsigned sense_key :4; /* Sense key of the last failed packet command */
unsigned mcr :1; /* Media Change Requested - As defined by ATA */
unsigned abrt :1; /* Aborted command - As defined by ATA */
unsigned eom :1; /* End Of Media Detected */
unsigned ili :1; /* Illegal Length Indication */
#else
#error "Bitfield endianness not defined! Check your byteorder.h"
#endif
} b;
} idefloppy_error_reg_t;
/*
* ATAPI Feature Register
*/
typedef union {
unsigned all :8;
struct {
#if defined(__LITTLE_ENDIAN_BITFIELD)
unsigned dma :1; /* Using DMA or PIO */
unsigned reserved321 :3; /* Reserved */
unsigned reserved654 :3; /* Reserved (Tag Type) */
unsigned reserved7 :1; /* Reserved */
#elif defined(__BIG_ENDIAN_BITFIELD)
unsigned reserved7 :1; /* Reserved */
unsigned reserved654 :3; /* Reserved (Tag Type) */
unsigned reserved321 :3; /* Reserved */
unsigned dma :1; /* Using DMA or PIO */
#else
#error "Bitfield endianness not defined! Check your byteorder.h"
#endif
} b;
} idefloppy_feature_reg_t;
/*
* ATAPI Byte Count Register.
*/
typedef union {
unsigned all :16;
struct {
#if defined(__LITTLE_ENDIAN_BITFIELD)
unsigned low :8; /* LSB */
unsigned high :8; /* MSB */
#elif defined(__BIG_ENDIAN_BITFIELD)
unsigned high :8; /* MSB */
unsigned low :8; /* LSB */
#else
#error "Bitfield endianness not defined! Check your byteorder.h"
#endif
} b;
} idefloppy_bcount_reg_t;
/*
* ATAPI Interrupt Reason Register.
*/
typedef union {
unsigned all :8;
struct {
#if defined(__LITTLE_ENDIAN_BITFIELD)
unsigned cod :1; /* Information transferred is command (1) or data (0) */
unsigned io :1; /* The device requests us to read (1) or write (0) */
unsigned reserved :6; /* Reserved */
#elif defined(__BIG_ENDIAN_BITFIELD)
unsigned reserved :6; /* Reserved */
unsigned io :1; /* The device requests us to read (1) or write (0) */
unsigned cod :1; /* Information transferred is command (1) or data (0) */
#else
#error "Bitfield endianness not defined! Check your byteorder.h"
#endif
} b;
} idefloppy_ireason_reg_t;
/*
* ATAPI floppy Drive Select Register
*/
typedef union {
unsigned all :8;
struct {
#if defined(__LITTLE_ENDIAN_BITFIELD)
unsigned sam_lun :3; /* Logical unit number */
unsigned reserved3 :1; /* Reserved */
unsigned drv :1; /* The responding drive will be drive 0 (0) or drive 1 (1) */
unsigned one5 :1; /* Should be set to 1 */
unsigned reserved6 :1; /* Reserved */
unsigned one7 :1; /* Should be set to 1 */
#elif defined(__BIG_ENDIAN_BITFIELD)
unsigned one7 :1; /* Should be set to 1 */
unsigned reserved6 :1; /* Reserved */
unsigned one5 :1; /* Should be set to 1 */
unsigned drv :1; /* The responding drive will be drive 0 (0) or drive 1 (1) */
unsigned reserved3 :1; /* Reserved */
unsigned sam_lun :3; /* Logical unit number */
#else
#error "Bitfield endianness not defined! Check your byteorder.h"
#endif
} b;
} idefloppy_drivesel_reg_t;
/*
* ATAPI Device Control Register
*/
typedef union {
unsigned all :8;
struct {
#if defined(__LITTLE_ENDIAN_BITFIELD)
unsigned zero0 :1; /* Should be set to zero */
unsigned nien :1; /* Device interrupt is disabled (1) or enabled (0) */
unsigned srst :1; /* ATA software reset. ATAPI devices should use the new ATAPI srst. */
unsigned one3 :1; /* Should be set to 1 */
unsigned reserved4567 :4; /* Reserved */
#elif defined(__BIG_ENDIAN_BITFIELD)
unsigned reserved4567 :4; /* Reserved */
unsigned one3 :1; /* Should be set to 1 */
unsigned srst :1; /* ATA software reset. ATAPI devices should use the new ATAPI srst. */
unsigned nien :1; /* Device interrupt is disabled (1) or enabled (0) */
unsigned zero0 :1; /* Should be set to zero */
#else
#error "Bitfield endianness not defined! Check your byteorder.h"
#endif
} b;
} idefloppy_control_reg_t;
/*
* The following is used to format the general configuration word of
* the ATAPI IDENTIFY DEVICE command.
*/
struct idefloppy_id_gcw {
#if defined(__LITTLE_ENDIAN_BITFIELD)
unsigned packet_size :2; /* Packet Size */
unsigned reserved234 :3; /* Reserved */
unsigned drq_type :2; /* Command packet DRQ type */
unsigned removable :1; /* Removable media */
unsigned device_type :5; /* Device type */
unsigned reserved13 :1; /* Reserved */
unsigned protocol :2; /* Protocol type */
#elif defined(__BIG_ENDIAN_BITFIELD)
unsigned protocol :2; /* Protocol type */
unsigned reserved13 :1; /* Reserved */
unsigned device_type :5; /* Device type */
unsigned removable :1; /* Removable media */
unsigned drq_type :2; /* Command packet DRQ type */
unsigned reserved234 :3; /* Reserved */
unsigned packet_size :2; /* Packet Size */
#else
#error "Bitfield endianness not defined! Check your byteorder.h"
#endif
};
/*
* INQUIRY packet command - Data Format
*/
typedef struct {
#if defined(__LITTLE_ENDIAN_BITFIELD)
unsigned device_type :5; /* Peripheral Device Type */
unsigned reserved0_765 :3; /* Peripheral Qualifier - Reserved */
unsigned reserved1_6t0 :7; /* Reserved */
unsigned rmb :1; /* Removable Medium Bit */
unsigned ansi_version :3; /* ANSI Version */
unsigned ecma_version :3; /* ECMA Version */
unsigned iso_version :2; /* ISO Version */
unsigned response_format :4; /* Response Data Format */
unsigned reserved3_45 :2; /* Reserved */
unsigned reserved3_6 :1; /* TrmIOP - Reserved */
unsigned reserved3_7 :1; /* AENC - Reserved */
#elif defined(__BIG_ENDIAN_BITFIELD)
unsigned reserved0_765 :3; /* Peripheral Qualifier - Reserved */
unsigned device_type :5; /* Peripheral Device Type */
unsigned rmb :1; /* Removable Medium Bit */
unsigned reserved1_6t0 :7; /* Reserved */
unsigned iso_version :2; /* ISO Version */
unsigned ecma_version :3; /* ECMA Version */
unsigned ansi_version :3; /* ANSI Version */
unsigned reserved3_7 :1; /* AENC - Reserved */
unsigned reserved3_6 :1; /* TrmIOP - Reserved */
unsigned reserved3_45 :2; /* Reserved */
unsigned response_format :4; /* Response Data Format */
#else
#error "Bitfield endianness not defined! Check your byteorder.h"
#endif
u8 additional_length; /* Additional Length (total_length-4) */
u8 rsv5, rsv6, rsv7; /* Reserved */
u8 vendor_id[8]; /* Vendor Identification */
u8 product_id[16]; /* Product Identification */
u8 revision_level[4]; /* Revision Level */
u8 vendor_specific[20]; /* Vendor Specific - Optional */
u8 reserved56t95[40]; /* Reserved - Optional */
/* Additional information may be returned */
} idefloppy_inquiry_result_t;
/*
* REQUEST SENSE packet command result - Data Format.
*/
typedef struct {
#if defined(__LITTLE_ENDIAN_BITFIELD)
unsigned error_code :7; /* Current error (0x70) */
unsigned valid :1; /* The information field conforms to SFF-8070i */
u8 reserved1 :8; /* Reserved */
unsigned sense_key :4; /* Sense Key */
unsigned reserved2_4 :1; /* Reserved */
unsigned ili :1; /* Incorrect Length Indicator */
unsigned reserved2_67 :2;
#elif defined(__BIG_ENDIAN_BITFIELD)
unsigned valid :1; /* The information field conforms to SFF-8070i */
unsigned error_code :7; /* Current error (0x70) */
u8 reserved1 :8; /* Reserved */
unsigned reserved2_67 :2;
unsigned ili :1; /* Incorrect Length Indicator */
unsigned reserved2_4 :1; /* Reserved */
unsigned sense_key :4; /* Sense Key */
#else
#error "Bitfield endianness not defined! Check your byteorder.h"
#endif
u32 information __attribute__ ((packed));
u8 asl; /* Additional sense length (n-7) */
u32 command_specific; /* Additional command specific information */
u8 asc; /* Additional Sense Code */
u8 ascq; /* Additional Sense Code Qualifier */
u8 replaceable_unit_code; /* Field Replaceable Unit Code */
u8 sksv[3];
u8 pad[2]; /* Padding to 20 bytes */
} idefloppy_request_sense_result_t;
/*
* Pages of the SELECT SENSE / MODE SENSE packet commands.
*/
#define IDEFLOPPY_CAPABILITIES_PAGE 0x1b
#define IDEFLOPPY_FLEXIBLE_DISK_PAGE 0x05
/*
* Mode Parameter Header for the MODE SENSE packet command
*/
typedef struct {
u16 mode_data_length; /* Length of the following data transfer */
u8 medium_type; /* Medium Type */
#if defined(__LITTLE_ENDIAN_BITFIELD)
unsigned reserved3 :7;
unsigned wp :1; /* Write protect */
#elif defined(__BIG_ENDIAN_BITFIELD)
unsigned wp :1; /* Write protect */
unsigned reserved3 :7;
#else
#error "Bitfield endianness not defined! Check your byteorder.h"
#endif
u8 reserved[4];
} idefloppy_mode_parameter_header_t;
#define IDEFLOPPY_MIN(a,b) ((a)<(b) ? (a):(b))
#define IDEFLOPPY_MAX(a,b) ((a)>(b) ? (a):(b))
/*
* Too bad. The drive wants to send us data which we are not ready to accept.
* Just throw it away.
*/
static void idefloppy_discard_data (ide_drive_t *drive, unsigned int bcount)
{
while (bcount--)
IN_BYTE (IDE_DATA_REG);
}
#if IDEFLOPPY_DEBUG_BUGS
static void idefloppy_write_zeros (ide_drive_t *drive, unsigned int bcount)
{
while (bcount--)
OUT_BYTE (0, IDE_DATA_REG);
}
#endif /* IDEFLOPPY_DEBUG_BUGS */
/*
* idefloppy_end_request is used to finish servicing a request.
*
* For read/write requests, we will call ide_end_request to pass to the
* next buffer.
*/
static int idefloppy_end_request(ide_drive_t *drive, int uptodate)
{
idefloppy_floppy_t *floppy = drive->driver_data;
struct request *rq = HWGROUP(drive)->rq;
int error;
#if IDEFLOPPY_DEBUG_LOG
printk (KERN_INFO "Reached idefloppy_end_request\n");
#endif /* IDEFLOPPY_DEBUG_LOG */
switch (uptodate) {
case 0: error = IDEFLOPPY_ERROR_GENERAL; break;
case 1: error = 0; break;
default: error = uptodate;
}
if (error)
floppy->failed_pc = NULL;
/* Why does this happen? */
if (!rq)
return 0;
if (!(rq->flags & IDEFLOPPY_RQ)) {
ide_end_request(drive, uptodate);
return 0;
}
rq->errors = error;
ide_end_drive_cmd (drive, 0, 0);
return 0;
}
static void idefloppy_input_buffers (ide_drive_t *drive, idefloppy_pc_t *pc, unsigned int bcount)
{
struct request *rq = pc->rq;
struct bio *bio = rq->bio;
int count;
while (bcount) {
if (pc->b_count == bio->bi_size) {
rq->sector += rq->current_nr_sectors;
rq->nr_sectors -= rq->current_nr_sectors;
idefloppy_end_request(drive, 1);
if ((bio = rq->bio) != NULL)
pc->b_count = 0;
}
if (bio == NULL) {
printk (KERN_ERR "%s: bio == NULL in idefloppy_input_buffers, bcount == %d\n", drive->name, bcount);
idefloppy_discard_data (drive, bcount);
return;
}
count = IDEFLOPPY_MIN (bio->bi_size - pc->b_count, bcount);
atapi_input_bytes (drive, bio_data(bio) + pc->b_count, count);
bcount -= count; pc->b_count += count;
}
}
static void idefloppy_output_buffers (ide_drive_t *drive, idefloppy_pc_t *pc, unsigned int bcount)
{
struct request *rq = pc->rq;
struct bio *bio = rq->bio;
int count;
while (bcount) {
if (!pc->b_count) {
rq->sector += rq->current_nr_sectors;
rq->nr_sectors -= rq->current_nr_sectors;
idefloppy_end_request(drive, 1);
if ((bio = rq->bio) != NULL) {
pc->b_data = bio_data(bio);
pc->b_count = bio->bi_size;
}
}
if (bio == NULL) {
printk (KERN_ERR "%s: bio == NULL in idefloppy_output_buffers, bcount == %d\n", drive->name, bcount);
idefloppy_write_zeros (drive, bcount);
return;
}
count = IDEFLOPPY_MIN (pc->b_count, bcount);
atapi_output_bytes (drive, pc->b_data, count);
bcount -= count; pc->b_data += count; pc->b_count -= count;
}
}
#ifdef CONFIG_BLK_DEV_IDEDMA
static void idefloppy_update_buffers (ide_drive_t *drive, idefloppy_pc_t *pc)
{
struct request *rq = pc->rq;
struct bio *bio = rq->bio;
while ((bio = rq->bio) != NULL)
idefloppy_end_request(drive, 1);
}
#endif /* CONFIG_BLK_DEV_IDEDMA */
/*
* idefloppy_queue_pc_head generates a new packet command request in front
* of the request queue, before the current request, so that it will be
* processed immediately, on the next pass through the driver.
*/
static void idefloppy_queue_pc_head (ide_drive_t *drive,idefloppy_pc_t *pc,struct request *rq)
{
ide_init_drive_cmd (rq);
rq->buffer = (char *) pc;
rq->flags = IDEFLOPPY_RQ;
(void) ide_do_drive_cmd (drive, rq, ide_preempt);
}
static idefloppy_pc_t *idefloppy_next_pc_storage (ide_drive_t *drive)
{
idefloppy_floppy_t *floppy = drive->driver_data;
if (floppy->pc_stack_index==IDEFLOPPY_PC_STACK)
floppy->pc_stack_index=0;
return (&floppy->pc_stack[floppy->pc_stack_index++]);
}
static struct request *idefloppy_next_rq_storage (ide_drive_t *drive)
{
idefloppy_floppy_t *floppy = drive->driver_data;
if (floppy->rq_stack_index==IDEFLOPPY_PC_STACK)
floppy->rq_stack_index=0;
return (&floppy->rq_stack[floppy->rq_stack_index++]);
}
/*
* idefloppy_analyze_error is called on each failed packet command retry
* to analyze the request sense.
*/
static void idefloppy_analyze_error (ide_drive_t *drive,idefloppy_request_sense_result_t *result)
{
idefloppy_floppy_t *floppy = drive->driver_data;
floppy->sense_key = result->sense_key; floppy->asc = result->asc; floppy->ascq = result->ascq;
floppy->progress_indication= result->sksv[0] & 0x80 ?
(unsigned short)get_unaligned((u16 *)(result->sksv+1)):0x10000;
#if IDEFLOPPY_DEBUG_LOG
if (floppy->failed_pc)
printk (KERN_INFO "ide-floppy: pc = %x, sense key = %x, asc = %x, ascq = %x\n",floppy->failed_pc->c[0],result->sense_key,result->asc,result->ascq);
else
printk (KERN_INFO "ide-floppy: sense key = %x, asc = %x, ascq = %x\n",result->sense_key,result->asc,result->ascq);
#endif /* IDEFLOPPY_DEBUG_LOG */
}
static void idefloppy_request_sense_callback (ide_drive_t *drive)
{
idefloppy_floppy_t *floppy = drive->driver_data;
#if IDEFLOPPY_DEBUG_LOG
printk (KERN_INFO "ide-floppy: Reached idefloppy_request_sense_callback\n");
#endif /* IDEFLOPPY_DEBUG_LOG */
if (!floppy->pc->error) {
idefloppy_analyze_error (drive,(idefloppy_request_sense_result_t *) floppy->pc->buffer);
idefloppy_end_request(drive, 1);
} else {
printk (KERN_ERR "Error in REQUEST SENSE itself - Aborting request!\n");
idefloppy_end_request(drive, 0);
}
}
/*
* General packet command callback function.
*/
static void idefloppy_pc_callback (ide_drive_t *drive)
{
idefloppy_floppy_t *floppy = drive->driver_data;
#if IDEFLOPPY_DEBUG_LOG
printk (KERN_INFO "ide-floppy: Reached idefloppy_pc_callback\n");
#endif /* IDEFLOPPY_DEBUG_LOG */
idefloppy_end_request(drive, floppy->pc->error ? 0:1);
}
/*
* idefloppy_init_pc initializes a packet command.
*/
static void idefloppy_init_pc (idefloppy_pc_t *pc)
{
memset (pc->c, 0, 12);
pc->retries = 0;
pc->flags = 0;
pc->request_transfer = 0;
pc->buffer = pc->pc_buffer;
pc->buffer_size = IDEFLOPPY_PC_BUFFER_SIZE;
pc->b_data = NULL;
pc->callback = &idefloppy_pc_callback;
}
static void idefloppy_create_request_sense_cmd (idefloppy_pc_t *pc)
{
idefloppy_init_pc (pc);
pc->c[0] = IDEFLOPPY_REQUEST_SENSE_CMD;
pc->c[4] = 255;
pc->request_transfer = 18;
pc->callback = &idefloppy_request_sense_callback;
}
/*
* idefloppy_retry_pc is called when an error was detected during the
* last packet command. We queue a request sense packet command in
* the head of the request list.
*/
static void idefloppy_retry_pc (ide_drive_t *drive)
{
idefloppy_pc_t *pc;
struct request *rq;
idefloppy_error_reg_t error;
error.all = IN_BYTE (IDE_ERROR_REG);
pc = idefloppy_next_pc_storage (drive);
rq = idefloppy_next_rq_storage (drive);
idefloppy_create_request_sense_cmd (pc);
idefloppy_queue_pc_head (drive, pc, rq);
}
/*
* idefloppy_pc_intr is the usual interrupt handler which will be called
* during a packet command.
*/
static ide_startstop_t idefloppy_pc_intr (ide_drive_t *drive)
{
idefloppy_floppy_t *floppy = drive->driver_data;
idefloppy_status_reg_t status;
idefloppy_bcount_reg_t bcount;
idefloppy_ireason_reg_t ireason;
idefloppy_pc_t *pc=floppy->pc;
struct request *rq = pc->rq;
unsigned int temp;
#if IDEFLOPPY_DEBUG_LOG
printk (KERN_INFO "ide-floppy: Reached idefloppy_pc_intr interrupt handler\n");
#endif /* IDEFLOPPY_DEBUG_LOG */
#ifdef CONFIG_BLK_DEV_IDEDMA
if (test_bit (PC_DMA_IN_PROGRESS, &pc->flags)) {
if (drive->channel->dmaproc(ide_dma_end, drive)) {
set_bit (PC_DMA_ERROR, &pc->flags);
} else {
pc->actually_transferred=pc->request_transfer;
idefloppy_update_buffers (drive, pc);
}
#if IDEFLOPPY_DEBUG_LOG
printk (KERN_INFO "ide-floppy: DMA finished\n");
#endif /* IDEFLOPPY_DEBUG_LOG */
}
#endif /* CONFIG_BLK_DEV_IDEDMA */
status.all = GET_STAT(); /* Clear the interrupt */
if (!status.b.drq) { /* No more interrupts */
#if IDEFLOPPY_DEBUG_LOG
printk (KERN_INFO "Packet command completed, %d bytes transferred\n", pc->actually_transferred);
#endif /* IDEFLOPPY_DEBUG_LOG */
clear_bit (PC_DMA_IN_PROGRESS, &pc->flags);
ide__sti(); /* local CPU only */
if (status.b.check || test_bit (PC_DMA_ERROR, &pc->flags)) { /* Error detected */
#if IDEFLOPPY_DEBUG_LOG
printk (KERN_INFO "ide-floppy: %s: I/O error\n",drive->name);
#endif /* IDEFLOPPY_DEBUG_LOG */
rq->errors++;
if (pc->c[0] == IDEFLOPPY_REQUEST_SENSE_CMD) {
printk (KERN_ERR "ide-floppy: I/O error in request sense command\n");
return ide_stopped;
}
idefloppy_retry_pc (drive); /* Retry operation */
return ide_stopped; /* queued, but not started */
}
pc->error = 0;
if (floppy->failed_pc == pc)
floppy->failed_pc=NULL;
pc->callback(drive); /* Command finished - Call the callback function */
return ide_stopped;
}
#ifdef CONFIG_BLK_DEV_IDEDMA
if (test_and_clear_bit (PC_DMA_IN_PROGRESS, &pc->flags)) {
printk (KERN_ERR "ide-floppy: The floppy wants to issue more interrupts in DMA mode\n");
drive->channel->dmaproc(ide_dma_off, drive);
return ide_stopped;
}
#endif /* CONFIG_BLK_DEV_IDEDMA */
bcount.b.high=IN_BYTE (IDE_BCOUNTH_REG); /* Get the number of bytes to transfer */
bcount.b.low=IN_BYTE (IDE_BCOUNTL_REG); /* on this interrupt */
ireason.all=IN_BYTE (IDE_IREASON_REG);
if (ireason.b.cod) {
printk (KERN_ERR "ide-floppy: CoD != 0 in idefloppy_pc_intr\n");
return ide_stopped;
}
if (ireason.b.io == test_bit (PC_WRITING, &pc->flags)) { /* Hopefully, we will never get here */
printk (KERN_ERR "ide-floppy: We wanted to %s, ", ireason.b.io ? "Write":"Read");
printk (KERN_ERR "but the floppy wants us to %s !\n",ireason.b.io ? "Read":"Write");
return ide_stopped;
}
if (!test_bit (PC_WRITING, &pc->flags)) { /* Reading - Check that we have enough space */
temp = pc->actually_transferred + bcount.all;
if ( temp > pc->request_transfer) {
if (temp > pc->buffer_size) {
printk (KERN_ERR "ide-floppy: The floppy wants to send us more data than expected - discarding data\n");
idefloppy_discard_data (drive,bcount.all);
BUG_ON(HWGROUP(drive)->handler);
ide_set_handler (drive,&idefloppy_pc_intr,IDEFLOPPY_WAIT_CMD, NULL);
return ide_started;
}
#if IDEFLOPPY_DEBUG_LOG
printk (KERN_NOTICE "ide-floppy: The floppy wants to send us more data than expected - allowing transfer\n");
#endif /* IDEFLOPPY_DEBUG_LOG */
}
}
if (test_bit (PC_WRITING, &pc->flags)) {
if (pc->buffer != NULL)
atapi_output_bytes (drive,pc->current_position,bcount.all); /* Write the current buffer */
else
idefloppy_output_buffers (drive, pc, bcount.all);
} else {
if (pc->buffer != NULL)
atapi_input_bytes (drive,pc->current_position,bcount.all); /* Read the current buffer */
else
idefloppy_input_buffers (drive, pc, bcount.all);
}
pc->actually_transferred+=bcount.all; /* Update the current position */
pc->current_position+=bcount.all;
BUG_ON(HWGROUP(drive)->handler);
ide_set_handler(drive,&idefloppy_pc_intr,IDEFLOPPY_WAIT_CMD, NULL); /* And set the interrupt handler again */
return ide_started;
}
/*
* This is the original routine that did the packet transfer.
* It fails at high speeds on the Iomega ZIP drive, so there's a slower version
* for that drive below. The algorithm is chosen based on drive type
*/
static ide_startstop_t idefloppy_transfer_pc (ide_drive_t *drive)
{
ide_startstop_t startstop;
idefloppy_floppy_t *floppy = drive->driver_data;
idefloppy_ireason_reg_t ireason;
if (ide_wait_stat (&startstop,drive,DRQ_STAT,BUSY_STAT,WAIT_READY)) {
printk (KERN_ERR "ide-floppy: Strange, packet command initiated yet DRQ isn't asserted\n");
return startstop;
}
ireason.all=IN_BYTE (IDE_IREASON_REG);
if (!ireason.b.cod || ireason.b.io) {
printk (KERN_ERR "ide-floppy: (IO,CoD) != (0,1) while issuing a packet command\n");
return ide_stopped;
}
BUG_ON(HWGROUP(drive)->handler);
ide_set_handler (drive, &idefloppy_pc_intr, IDEFLOPPY_WAIT_CMD, NULL); /* Set the interrupt routine */
atapi_output_bytes (drive, floppy->pc->c, 12); /* Send the actual packet */
return ide_started;
}
/*
* What we have here is a classic case of a top half / bottom half
* interrupt service routine. In interrupt mode, the device sends
* an interrupt to signal it's ready to receive a packet. However,
* we need to delay about 2-3 ticks before issuing the packet or we
* gets in trouble.
*
* So, follow carefully. transfer_pc1 is called as an interrupt (or
* directly). In either case, when the device says it's ready for a
* packet, we schedule the packet transfer to occur about 2-3 ticks
* later in transfer_pc2.
*/
static int idefloppy_transfer_pc2 (ide_drive_t *drive)
{
idefloppy_floppy_t *floppy = drive->driver_data;
atapi_output_bytes (drive, floppy->pc->c, 12); /* Send the actual packet */
return IDEFLOPPY_WAIT_CMD; /* Timeout for the packet command */
}
static ide_startstop_t idefloppy_transfer_pc1 (ide_drive_t *drive)
{
idefloppy_floppy_t *floppy = drive->driver_data;
ide_startstop_t startstop;
idefloppy_ireason_reg_t ireason;
if (ide_wait_stat (&startstop,drive,DRQ_STAT,BUSY_STAT,WAIT_READY)) {
printk (KERN_ERR "ide-floppy: Strange, packet command initiated yet DRQ isn't asserted\n");
return startstop;
}
ireason.all=IN_BYTE (IDE_IREASON_REG);
if (!ireason.b.cod || ireason.b.io) {
printk (KERN_ERR "ide-floppy: (IO,CoD) != (0,1) while issuing a packet command\n");
return ide_stopped;
}
/*
* The following delay solves a problem with ATAPI Zip 100 drives where the
* Busy flag was apparently being deasserted before the unit was ready to
* receive data. This was happening on a 1200 MHz Athlon system. 10/26/01
* 25msec is too short, 40 and 50msec work well. idefloppy_pc_intr will
* not be actually used until after the packet is moved in about 50 msec.
*/
BUG_ON(HWGROUP(drive)->handler);
ide_set_handler (drive,
&idefloppy_pc_intr, /* service routine for packet command */
floppy->ticks, /* wait this long before "failing" */
&idefloppy_transfer_pc2); /* fail == transfer_pc2 */
return ide_started;
}
/*
* Issue a packet command
*/
static ide_startstop_t idefloppy_issue_pc (ide_drive_t *drive, idefloppy_pc_t *pc)
{
idefloppy_floppy_t *floppy = drive->driver_data;
idefloppy_bcount_reg_t bcount;
int dma_ok = 0;
ide_handler_t *pkt_xfer_routine;
#if IDEFLOPPY_DEBUG_BUGS
if (floppy->pc->c[0] == IDEFLOPPY_REQUEST_SENSE_CMD && pc->c[0] == IDEFLOPPY_REQUEST_SENSE_CMD) {
printk (KERN_ERR "ide-floppy: possible ide-floppy.c bug - Two request sense in serial were issued\n");
}
#endif /* IDEFLOPPY_DEBUG_BUGS */
if (floppy->failed_pc == NULL && pc->c[0] != IDEFLOPPY_REQUEST_SENSE_CMD)
floppy->failed_pc=pc;
floppy->pc=pc; /* Set the current packet command */
if (pc->retries > IDEFLOPPY_MAX_PC_RETRIES || test_bit (PC_ABORT, &pc->flags)) {
/*
* We will "abort" retrying a packet command in case
* a legitimate error code was received.
*/
if (!test_bit (PC_ABORT, &pc->flags)) {
if (!test_bit (PC_SUPPRESS_ERROR, &pc->flags)) {
;
printk( KERN_ERR "ide-floppy: %s: I/O error, pc = %2x, key = %2x, asc = %2x, ascq = %2x\n",
drive->name, pc->c[0], floppy->sense_key, floppy->asc, floppy->ascq);
}
pc->error = IDEFLOPPY_ERROR_GENERAL; /* Giving up */
}
floppy->failed_pc=NULL;
pc->callback(drive);
return ide_stopped;
}
#if IDEFLOPPY_DEBUG_LOG
printk (KERN_INFO "Retry number - %d\n",pc->retries);
#endif /* IDEFLOPPY_DEBUG_LOG */
pc->retries++;
pc->actually_transferred=0; /* We haven't transferred any data yet */
pc->current_position=pc->buffer;
bcount.all = min(pc->request_transfer, 63 * 1024);
#ifdef CONFIG_BLK_DEV_IDEDMA
if (test_and_clear_bit (PC_DMA_ERROR, &pc->flags)) {
(void) drive->channel->dmaproc(ide_dma_off, drive);
}
if (test_bit (PC_DMA_RECOMMENDED, &pc->flags) && drive->using_dma)
dma_ok=!drive->channel->dmaproc(test_bit (PC_WRITING, &pc->flags) ? ide_dma_write : ide_dma_read, drive);
#endif /* CONFIG_BLK_DEV_IDEDMA */
if (IDE_CONTROL_REG)
OUT_BYTE (drive->ctl,IDE_CONTROL_REG);
OUT_BYTE (dma_ok ? 1:0,IDE_FEATURE_REG); /* Use PIO/DMA */
OUT_BYTE (bcount.b.high,IDE_BCOUNTH_REG);
OUT_BYTE (bcount.b.low,IDE_BCOUNTL_REG);
OUT_BYTE (drive->select.all,IDE_SELECT_REG);
#ifdef CONFIG_BLK_DEV_IDEDMA
if (dma_ok) { /* Begin DMA, if necessary */
set_bit (PC_DMA_IN_PROGRESS, &pc->flags);
(void) drive->channel->dmaproc(ide_dma_begin, drive);
}
#endif /* CONFIG_BLK_DEV_IDEDMA */
/* Can we transfer the packet when we get the interrupt or wait? */
if (test_bit (IDEFLOPPY_ZIP_DRIVE, &floppy->flags)) {
pkt_xfer_routine = &idefloppy_transfer_pc1; /* wait */
} else {
pkt_xfer_routine = &idefloppy_transfer_pc; /* immediate */
}
if (test_bit (IDEFLOPPY_DRQ_INTERRUPT, &floppy->flags)) {
BUG_ON(HWGROUP(drive)->handler);
ide_set_handler (drive, pkt_xfer_routine, IDEFLOPPY_WAIT_CMD, NULL);
OUT_BYTE (WIN_PACKETCMD, IDE_COMMAND_REG); /* Issue the packet command */
return ide_started;
} else {
OUT_BYTE (WIN_PACKETCMD, IDE_COMMAND_REG);
return (*pkt_xfer_routine) (drive);
}
}
static void idefloppy_rw_callback (ide_drive_t *drive)
{
#if IDEFLOPPY_DEBUG_LOG
printk (KERN_INFO "ide-floppy: Reached idefloppy_rw_callback\n");
#endif /* IDEFLOPPY_DEBUG_LOG */
idefloppy_end_request(drive, 1);
return;
}
static void idefloppy_create_prevent_cmd (idefloppy_pc_t *pc, int prevent)
{
#if IDEFLOPPY_DEBUG_LOG
printk (KERN_INFO "ide-floppy: creating prevent removal command, prevent = %d\n", prevent);
#endif /* IDEFLOPPY_DEBUG_LOG */
idefloppy_init_pc (pc);
pc->c[0] = IDEFLOPPY_PREVENT_REMOVAL_CMD;
pc->c[4] = prevent;
}
static void idefloppy_create_read_capacity_cmd (idefloppy_pc_t *pc)
{
idefloppy_init_pc (pc);
pc->c[0] = IDEFLOPPY_READ_CAPACITY_CMD;
pc->c[7] = 255;
pc->c[8] = 255;
pc->request_transfer = 255;
}
static void idefloppy_create_format_unit_cmd (idefloppy_pc_t *pc, int b, int l,
int flags)
{
idefloppy_init_pc (pc);
pc->c[0] = IDEFLOPPY_FORMAT_UNIT_CMD;
pc->c[1] = 0x17;
memset(pc->buffer, 0, 12);
pc->buffer[1] = 0xA2;
/* Default format list header, byte 1: FOV/DCRT/IMM bits set */
if (flags & 1) /* Verify bit on... */
pc->buffer[1] ^= 0x20; /* ... turn off DCRT bit */
pc->buffer[3] = 8;
put_unaligned(htonl(b), (unsigned int *)(&pc->buffer[4]));
put_unaligned(htonl(l), (unsigned int *)(&pc->buffer[8]));
pc->buffer_size=12;
set_bit(PC_WRITING, &pc->flags);
}
/*
* A mode sense command is used to "sense" floppy parameters.
*/
static void idefloppy_create_mode_sense_cmd (idefloppy_pc_t *pc, byte page_code, byte type)
{
unsigned short length = sizeof (idefloppy_mode_parameter_header_t);
idefloppy_init_pc (pc);
pc->c[0] = IDEFLOPPY_MODE_SENSE_CMD;
pc->c[1] = 0;
pc->c[2] = page_code + (type << 6);
switch (page_code) {
case IDEFLOPPY_CAPABILITIES_PAGE:
length += 12;
break;
case IDEFLOPPY_FLEXIBLE_DISK_PAGE:
length += 32;
break;
default:
printk (KERN_ERR "ide-floppy: unsupported page code in create_mode_sense_cmd\n");
}
put_unaligned (htons (length), (unsigned short *) &pc->c[7]);
pc->request_transfer = length;
}
static void idefloppy_create_start_stop_cmd (idefloppy_pc_t *pc, int start)
{
idefloppy_init_pc (pc);
pc->c[0] = IDEFLOPPY_START_STOP_CMD;
pc->c[4] = start;
}
static void idefloppy_create_test_unit_ready_cmd(idefloppy_pc_t *pc)
{
idefloppy_init_pc(pc);
pc->c[0] = IDEFLOPPY_TEST_UNIT_READY_CMD;
}
static void idefloppy_create_rw_cmd (idefloppy_floppy_t *floppy, idefloppy_pc_t *pc, struct request *rq, unsigned long sector)
{
int block = sector / floppy->bs_factor;
int blocks = rq->nr_sectors / floppy->bs_factor;
int cmd = rq_data_dir(rq);
#if IDEFLOPPY_DEBUG_LOG
printk ("create_rw1%d_cmd: block == %d, blocks == %d\n",
2 * test_bit (IDEFLOPPY_USE_READ12, &floppy->flags), block, blocks);
#endif /* IDEFLOPPY_DEBUG_LOG */
idefloppy_init_pc (pc);
if (test_bit (IDEFLOPPY_USE_READ12, &floppy->flags)) {
pc->c[0] = cmd == READ ? IDEFLOPPY_READ12_CMD : IDEFLOPPY_WRITE12_CMD;
put_unaligned (htonl (blocks), (unsigned int *) &pc->c[6]);
} else {
pc->c[0] = cmd == READ ? IDEFLOPPY_READ10_CMD : IDEFLOPPY_WRITE10_CMD;
put_unaligned (htons (blocks), (unsigned short *) &pc->c[7]);
}
put_unaligned (htonl (block), (unsigned int *) &pc->c[2]);
pc->callback = &idefloppy_rw_callback;
pc->rq = rq;
pc->b_data = rq->buffer;
pc->b_count = cmd == READ ? 0 : rq->bio->bi_size;
if (rq->flags & REQ_RW)
set_bit (PC_WRITING, &pc->flags);
pc->buffer = NULL;
pc->request_transfer = pc->buffer_size = blocks * floppy->block_size;
set_bit (PC_DMA_RECOMMENDED, &pc->flags);
}
/*
* idefloppy_do_request is our request handling function.
*/
static ide_startstop_t idefloppy_do_request (ide_drive_t *drive, struct request *rq, unsigned long block)
{
idefloppy_floppy_t *floppy = drive->driver_data;
idefloppy_pc_t *pc;
#if IDEFLOPPY_DEBUG_LOG
printk (KERN_INFO "rq_status: %d, rq_dev: %u, flags: %lx, errors: %d\n",rq->rq_status,(unsigned int) rq->rq_dev,rq->flags,rq->errors);
printk (KERN_INFO "sector: %ld, nr_sectors: %ld, current_nr_sectors: %d\n",rq->sector,rq->nr_sectors,rq->current_nr_sectors);
#endif /* IDEFLOPPY_DEBUG_LOG */
if (rq->errors >= ERROR_MAX) {
if (floppy->failed_pc != NULL)
printk (KERN_ERR "ide-floppy: %s: I/O error, pc = %2x, key = %2x, asc = %2x, ascq = %2x\n",
drive->name, floppy->failed_pc->c[0], floppy->sense_key, floppy->asc, floppy->ascq);
else
printk (KERN_ERR "ide-floppy: %s: I/O error\n", drive->name);
idefloppy_end_request(drive, 0);
return ide_stopped;
}
if (rq->flags & REQ_CMD) {
if (rq->sector % floppy->bs_factor || rq->nr_sectors % floppy->bs_factor) {
printk ("%s: unsupported r/w request size\n", drive->name);
idefloppy_end_request(drive, 0);
return ide_stopped;
}
pc = idefloppy_next_pc_storage (drive);
idefloppy_create_rw_cmd (floppy, pc, rq, block);
} else if (rq->flags & IDEFLOPPY_RQ) {
pc = (idefloppy_pc_t *) rq->buffer;
} else {
blk_dump_rq_flags(rq, "ide-floppy: unsupported command in queue");
idefloppy_end_request(drive, 0);
return ide_stopped;
}
pc->rq = rq;
return idefloppy_issue_pc (drive, pc);
}
/*
* idefloppy_queue_pc_tail adds a special packet command request to the
* tail of the request queue, and waits for it to be serviced.
*/
static int idefloppy_queue_pc_tail (ide_drive_t *drive,idefloppy_pc_t *pc)
{
struct request rq;
ide_init_drive_cmd (&rq);
rq.buffer = (char *) pc;
rq.flags = IDEFLOPPY_RQ;
return ide_do_drive_cmd (drive, &rq, ide_wait);
}
/*
* Look at the flexible disk page parameters. We will ignore the CHS
* capacity parameters and use the LBA parameters instead.
*/
static int idefloppy_get_flexible_disk_page (ide_drive_t *drive)
{
idefloppy_floppy_t *floppy = drive->driver_data;
idefloppy_pc_t pc;
idefloppy_mode_parameter_header_t *header;
idefloppy_flexible_disk_page_t *page;
int capacity, lba_capacity;
idefloppy_create_mode_sense_cmd (&pc, IDEFLOPPY_FLEXIBLE_DISK_PAGE, MODE_SENSE_CURRENT);
if (idefloppy_queue_pc_tail (drive,&pc)) {
printk (KERN_ERR "ide-floppy: Can't get flexible disk page parameters\n");
return 1;
}
header = (idefloppy_mode_parameter_header_t *) pc.buffer;
floppy->wp = header->wp;
page = (idefloppy_flexible_disk_page_t *) (header + 1);
page->transfer_rate = ntohs (page->transfer_rate);
page->sector_size = ntohs (page->sector_size);
page->cyls = ntohs (page->cyls);
page->rpm = ntohs (page->rpm);
capacity = page->cyls * page->heads * page->sectors * page->sector_size;
if (memcmp (page, &floppy->flexible_disk_page, sizeof (idefloppy_flexible_disk_page_t)))
printk (KERN_INFO "%s: %dkB, %d/%d/%d CHS, %d kBps, %d sector size, %d rpm\n",
drive->name, capacity / 1024, page->cyls, page->heads, page->sectors,
page->transfer_rate / 8, page->sector_size, page->rpm);
floppy->flexible_disk_page = *page;
drive->bios_cyl = page->cyls;
drive->bios_head = page->heads;
drive->bios_sect = page->sectors;
lba_capacity = floppy->blocks * floppy->block_size;
if (capacity < lba_capacity) {
printk (KERN_NOTICE "%s: The disk reports a capacity of %d bytes, "
"but the drive only handles %d\n",
drive->name, lba_capacity, capacity);
floppy->blocks = floppy->block_size ? capacity / floppy->block_size : 0;
}
return 0;
}
static int idefloppy_get_capability_page(ide_drive_t *drive)
{
idefloppy_floppy_t *floppy = drive->driver_data;
idefloppy_pc_t pc;
idefloppy_mode_parameter_header_t *header;
idefloppy_capabilities_page_t *page;
floppy->srfp=0;
idefloppy_create_mode_sense_cmd (&pc, IDEFLOPPY_CAPABILITIES_PAGE,
MODE_SENSE_CURRENT);
set_bit(PC_SUPPRESS_ERROR, &pc.flags);
if (idefloppy_queue_pc_tail (drive,&pc)) {
return 1;
}
header = (idefloppy_mode_parameter_header_t *) pc.buffer;
page= (idefloppy_capabilities_page_t *)(header+1);
floppy->srfp=page->srfp;
return (0);
}
/*
* Determine if a media is present in the floppy drive, and if so,
* its LBA capacity.
*/
static int idefloppy_get_capacity (ide_drive_t *drive)
{
idefloppy_floppy_t *floppy = drive->driver_data;
idefloppy_pc_t pc;
idefloppy_capacity_header_t *header;
idefloppy_capacity_descriptor_t *descriptor;
int i, descriptors, rc = 1, blocks, length;
drive->bios_cyl = 0;
drive->bios_head = drive->bios_sect = 0;
floppy->blocks = floppy->bs_factor = 0;
drive->part[0].nr_sects = 0;
idefloppy_create_read_capacity_cmd (&pc);
if (idefloppy_queue_pc_tail (drive, &pc)) {
printk (KERN_ERR "ide-floppy: Can't get floppy parameters\n");
return 1;
}
header = (idefloppy_capacity_header_t *) pc.buffer;
descriptors = header->length / sizeof (idefloppy_capacity_descriptor_t);
descriptor = (idefloppy_capacity_descriptor_t *) (header + 1);
for (i = 0; i < descriptors; i++, descriptor++) {
blocks = descriptor->blocks = ntohl (descriptor->blocks);
length = descriptor->length = ntohs (descriptor->length);
if (!i)
{
switch (descriptor->dc) {
case CAPACITY_UNFORMATTED: /* Clik! drive returns this instead of CAPACITY_CURRENT */
if (!test_bit(IDEFLOPPY_CLIK_DRIVE, &floppy->flags))
break; /* If it is not a clik drive, break out (maintains previous driver behaviour) */
case CAPACITY_CURRENT: /* Normal Zip/LS-120 disks */
if (memcmp (descriptor, &floppy->capacity, sizeof (idefloppy_capacity_descriptor_t)))
printk (KERN_INFO "%s: %dkB, %d blocks, %d sector size\n", drive->name, blocks * length / 1024, blocks, length);
floppy->capacity = *descriptor;
if (!length || length % 512)
printk (KERN_NOTICE "%s: %d bytes block size not supported\n", drive->name, length);
else {
floppy->blocks = blocks;
floppy->block_size = length;
if ((floppy->bs_factor = length / 512) != 1)
printk (KERN_NOTICE "%s: warning: non 512 bytes block size not fully supported\n", drive->name);
rc = 0;
}
break;
case CAPACITY_NO_CARTRIDGE:
/* This is a KERN_ERR so it appears on screen for the user to see */
printk (KERN_ERR "%s: No disk in drive\n", drive->name);
break;
case CAPACITY_INVALID:
printk (KERN_ERR "%s: Invalid capacity for disk in drive\n", drive->name);
break;
}
}
if (!i) {
IDEFLOPPY_DEBUG( "Descriptor 0 Code: %d\n", descriptor->dc);
}
IDEFLOPPY_DEBUG( "Descriptor %d: %dkB, %d blocks, %d sector size\n", i, blocks * length / 1024, blocks, length);
}
/* Clik! disk does not support get_flexible_disk_page */
if (!test_bit(IDEFLOPPY_CLIK_DRIVE, &floppy->flags))
{
(void) idefloppy_get_flexible_disk_page (drive);
}
drive->part[0].nr_sects = floppy->blocks * floppy->bs_factor;
return rc;
}
/*
** Obtain the list of formattable capacities.
** Very similar to idefloppy_get_capacity, except that we push the capacity
** descriptors to userland, instead of our own structures.
**
** Userland gives us the following structure:
**
** struct idefloppy_format_capacities {
** int nformats;
** struct {
** int nblocks;
** int blocksize;
** } formats[];
** } ;
**
** userland initializes nformats to the number of allocated formats[]
** records. On exit we set nformats to the number of records we've
** actually initialized.
**
*/
static int idefloppy_get_format_capacities (ide_drive_t *drive,
struct inode *inode,
struct file *file,
int *arg) /* Cheater */
{
idefloppy_pc_t pc;
idefloppy_capacity_header_t *header;
idefloppy_capacity_descriptor_t *descriptor;
int i, descriptors, blocks, length;
int u_array_size;
int u_index;
int *argp;
if (get_user(u_array_size, arg))
return (-EFAULT);
if (u_array_size <= 0)
return (-EINVAL);
idefloppy_create_read_capacity_cmd (&pc);
if (idefloppy_queue_pc_tail (drive, &pc)) {
printk (KERN_ERR "ide-floppy: Can't get floppy parameters\n");
return (-EIO);
}
header = (idefloppy_capacity_header_t *) pc.buffer;
descriptors = header->length /
sizeof (idefloppy_capacity_descriptor_t);
descriptor = (idefloppy_capacity_descriptor_t *) (header + 1);
u_index=0;
argp=arg+1;
/*
** We always skip the first capacity descriptor. That's the
** current capacity. We are interested in the remaining descriptors,
** the formattable capacities.
*/
for (i=0; i<descriptors; i++, descriptor++)
{
if (u_index >= u_array_size)
break; /* User-supplied buffer too small */
if (i == 0)
continue; /* Skip the first descriptor */
blocks = ntohl (descriptor->blocks);
length = ntohs (descriptor->length);
if (put_user(blocks, argp))
return (-EFAULT);
++argp;
if (put_user(length, argp))
return (-EFAULT);
++argp;
++u_index;
}
if (put_user(u_index, arg))
return (-EFAULT);
return (0);
}
/*
** Send ATAPI_FORMAT_UNIT to the drive.
**
** Userland gives us the following structure:
**
** struct idefloppy_format_command {
** int nblocks;
** int blocksize;
** int flags;
** } ;
**
** flags is a bitmask, currently, the only defined flag is:
**
** 0x01 - verify media after format.
*/
static int idefloppy_begin_format(ide_drive_t *drive,
struct inode *inode,
struct file *file,
int *arg)
{
int blocks;
int length;
int flags;
idefloppy_pc_t pc;
if (get_user(blocks, arg)
|| get_user(length, arg+1)
|| get_user(flags, arg+2))
{
return (-EFAULT);
}
(void) idefloppy_get_capability_page (drive); /* Get the SFRP bit */
idefloppy_create_format_unit_cmd(&pc, blocks, length, flags);
if (idefloppy_queue_pc_tail (drive, &pc))
{
return (-EIO);
}
return (0);
}
/*
** Get ATAPI_FORMAT_UNIT progress indication.
**
** Userland gives a pointer to an int. The int is set to a progresss
** indicator 0-65536, with 65536=100%.
**
** If the drive does not support format progress indication, we just check
** the dsc bit, and return either 0 or 65536.
*/
static int idefloppy_get_format_progress(ide_drive_t *drive,
struct inode *inode,
struct file *file,
int *arg)
{
idefloppy_floppy_t *floppy = drive->driver_data;
idefloppy_pc_t pc;
int progress_indication=0x10000;
if (floppy->srfp)
{
idefloppy_create_request_sense_cmd(&pc);
if (idefloppy_queue_pc_tail (drive, &pc))
{
return (-EIO);
}
if (floppy->sense_key == 2 && floppy->asc == 4 &&
floppy->ascq == 4)
{
progress_indication=floppy->progress_indication;
}
/* Else assume format_unit has finished, and we're
** at 0x10000 */
}
else
{
idefloppy_status_reg_t status;
unsigned long flags;
__save_flags(flags);
__cli();
status.all=GET_STAT();
__restore_flags(flags);
progress_indication= !status.b.dsc ? 0:0x10000;
}
if (put_user(progress_indication, arg))
return (-EFAULT);
return (0);
}
/*
* Our special ide-floppy ioctl's.
*
* Currently there aren't any ioctl's.
*/
static int idefloppy_ioctl (ide_drive_t *drive, struct inode *inode, struct file *file,
unsigned int cmd, unsigned long arg)
{
idefloppy_pc_t pc;
idefloppy_floppy_t *floppy = drive->driver_data;
int prevent = (arg) ? 1 : 0;
switch (cmd) {
case CDROMEJECT:
prevent = 0;
/* fall through */
case CDROM_LOCKDOOR:
if (drive->usage > 1)
return -EBUSY;
/* The IOMEGA Clik! Drive doesn't support this command - no room for an eject mechanism */
if (!test_bit(IDEFLOPPY_CLIK_DRIVE, &floppy->flags)) {
idefloppy_create_prevent_cmd (&pc, prevent);
(void) idefloppy_queue_pc_tail (drive, &pc);
}
if (cmd == CDROMEJECT) {
idefloppy_create_start_stop_cmd (&pc, 2);
(void) idefloppy_queue_pc_tail (drive, &pc);
}
return 0;
case IDEFLOPPY_IOCTL_FORMAT_SUPPORTED:
return (0);
case IDEFLOPPY_IOCTL_FORMAT_GET_CAPACITY:
return (idefloppy_get_format_capacities(drive, inode, file,
(int *)arg));
case IDEFLOPPY_IOCTL_FORMAT_START:
if (!(file->f_mode & 2))
return (-EPERM);
{
idefloppy_floppy_t *floppy = drive->driver_data;
if (drive->usage > 1)
{
/* Don't format if someone is using the disk */
clear_bit(IDEFLOPPY_FORMAT_IN_PROGRESS,
&floppy->flags);
return -EBUSY;
}
else
{
int rc;
set_bit(IDEFLOPPY_FORMAT_IN_PROGRESS,
&floppy->flags);
rc=idefloppy_begin_format(drive, inode,
file,
(int *)arg);
if (rc)
clear_bit(IDEFLOPPY_FORMAT_IN_PROGRESS,
&floppy->flags);
return (rc);
/*
** Note, the bit will be cleared when the device is
** closed. This is the cleanest way to handle the
** situation where the drive does not support
** format progress reporting.
*/
}
}
case IDEFLOPPY_IOCTL_FORMAT_GET_PROGRESS:
return (idefloppy_get_format_progress(drive, inode, file,
(int *)arg));
}
return -EIO;
}
/*
* Our open/release functions
*/
static int idefloppy_open (struct inode *inode, struct file *filp, ide_drive_t *drive)
{
idefloppy_floppy_t *floppy = drive->driver_data;
idefloppy_pc_t pc;
#if IDEFLOPPY_DEBUG_LOG
printk (KERN_INFO "Reached idefloppy_open\n");
#endif /* IDEFLOPPY_DEBUG_LOG */
MOD_INC_USE_COUNT;
if (drive->usage == 1) {
clear_bit(IDEFLOPPY_FORMAT_IN_PROGRESS, &floppy->flags);
/* Just in case */
idefloppy_create_test_unit_ready_cmd(&pc);
if (idefloppy_queue_pc_tail(drive, &pc)) {
idefloppy_create_start_stop_cmd (&pc, 1);
(void) idefloppy_queue_pc_tail (drive, &pc);
}
if (idefloppy_get_capacity (drive)
&& (filp->f_flags & O_NDELAY) == 0
/*
** Allow O_NDELAY to open a drive without a disk, or with
** an unreadable disk, so that we can get the format
** capacity of the drive or begin the format - Sam
*/
) {
drive->usage--;
MOD_DEC_USE_COUNT;
return -EIO;
}
if (floppy->wp && (filp->f_mode & 2)) {
drive->usage--;
MOD_DEC_USE_COUNT;
return -EROFS;
}
set_bit (IDEFLOPPY_MEDIA_CHANGED, &floppy->flags);
/* IOMEGA Clik! drives do not support lock/unlock commands */
if (!test_bit(IDEFLOPPY_CLIK_DRIVE, &floppy->flags)) {
idefloppy_create_prevent_cmd (&pc, 1);
(void) idefloppy_queue_pc_tail (drive, &pc);
}
check_disk_change(inode->i_rdev);
}
else if (test_bit(IDEFLOPPY_FORMAT_IN_PROGRESS, &floppy->flags))
{
drive->usage--;
MOD_DEC_USE_COUNT;
return -EBUSY;
}
return 0;
}
static void idefloppy_release (struct inode *inode, struct file *filp, ide_drive_t *drive)
{
idefloppy_pc_t pc;
#if IDEFLOPPY_DEBUG_LOG
printk (KERN_INFO "Reached idefloppy_release\n");
#endif /* IDEFLOPPY_DEBUG_LOG */
if (!drive->usage) {
idefloppy_floppy_t *floppy = drive->driver_data;
invalidate_bdev (inode->i_bdev, 0);
/* IOMEGA Clik! drives do not support lock/unlock commands */
if (!test_bit(IDEFLOPPY_CLIK_DRIVE, &floppy->flags)) {
idefloppy_create_prevent_cmd (&pc, 0);
(void) idefloppy_queue_pc_tail (drive, &pc);
}
clear_bit(IDEFLOPPY_FORMAT_IN_PROGRESS, &floppy->flags);
}
MOD_DEC_USE_COUNT;
}
/*
* Check media change. Use a simple algorithm for now.
*/
static int idefloppy_check_media_change (ide_drive_t *drive)
{
idefloppy_floppy_t *floppy = drive->driver_data;
return test_and_clear_bit (IDEFLOPPY_MEDIA_CHANGED, &floppy->flags);
}
/*
* Return the current floppy capacity to ide.c.
*/
static unsigned long idefloppy_capacity (ide_drive_t *drive)
{
idefloppy_floppy_t *floppy = drive->driver_data;
unsigned long capacity = floppy->blocks * floppy->bs_factor;
return capacity;
}
/*
* idefloppy_identify_device checks if we can support a drive,
* based on the ATAPI IDENTIFY command results.
*/
static int idefloppy_identify_device (ide_drive_t *drive,struct hd_driveid *id)
{
struct idefloppy_id_gcw gcw;
#if IDEFLOPPY_DEBUG_INFO
unsigned short mask,i;
char buffer[80];
#endif /* IDEFLOPPY_DEBUG_INFO */
*((unsigned short *) &gcw) = id->config;
#ifdef CONFIG_PPC
/* kludge for Apple PowerBook internal zip */
if ((gcw.device_type == 5) && !strstr(id->model, "CD-ROM")
&& strstr(id->model, "ZIP"))
gcw.device_type = 0;
#endif
#if IDEFLOPPY_DEBUG_INFO
printk (KERN_INFO "Dumping ATAPI Identify Device floppy parameters\n");
switch (gcw.protocol) {
case 0: case 1: sprintf (buffer, "ATA");break;
case 2: sprintf (buffer, "ATAPI");break;
case 3: sprintf (buffer, "Reserved (Unknown to ide-floppy)");break;
}
printk (KERN_INFO "Protocol Type: %s\n", buffer);
switch (gcw.device_type) {
case 0: sprintf (buffer, "Direct-access Device");break;
case 1: sprintf (buffer, "Streaming Tape Device");break;
case 2: case 3: case 4: sprintf (buffer, "Reserved");break;
case 5: sprintf (buffer, "CD-ROM Device");break;
case 6: sprintf (buffer, "Reserved");
case 7: sprintf (buffer, "Optical memory Device");break;
case 0x1f: sprintf (buffer, "Unknown or no Device type");break;
default: sprintf (buffer, "Reserved");
}
printk (KERN_INFO "Device Type: %x - %s\n", gcw.device_type, buffer);
printk (KERN_INFO "Removable: %s\n",gcw.removable ? "Yes":"No");
switch (gcw.drq_type) {
case 0: sprintf (buffer, "Microprocessor DRQ");break;
case 1: sprintf (buffer, "Interrupt DRQ");break;
case 2: sprintf (buffer, "Accelerated DRQ");break;
case 3: sprintf (buffer, "Reserved");break;
}
printk (KERN_INFO "Command Packet DRQ Type: %s\n", buffer);
switch (gcw.packet_size) {
case 0: sprintf (buffer, "12 bytes");break;
case 1: sprintf (buffer, "16 bytes");break;
default: sprintf (buffer, "Reserved");break;
}
printk (KERN_INFO "Command Packet Size: %s\n", buffer);
printk (KERN_INFO "Model: %.40s\n",id->model);
printk (KERN_INFO "Firmware Revision: %.8s\n",id->fw_rev);
printk (KERN_INFO "Serial Number: %.20s\n",id->serial_no);
printk (KERN_INFO "Write buffer size(?): %d bytes\n",id->buf_size*512);
printk (KERN_INFO "DMA: %s",id->capability & 0x01 ? "Yes\n":"No\n");
printk (KERN_INFO "LBA: %s",id->capability & 0x02 ? "Yes\n":"No\n");
printk (KERN_INFO "IORDY can be disabled: %s",id->capability & 0x04 ? "Yes\n":"No\n");
printk (KERN_INFO "IORDY supported: %s",id->capability & 0x08 ? "Yes\n":"Unknown\n");
printk (KERN_INFO "ATAPI overlap supported: %s",id->capability & 0x20 ? "Yes\n":"No\n");
printk (KERN_INFO "PIO Cycle Timing Category: %d\n",id->tPIO);
printk (KERN_INFO "DMA Cycle Timing Category: %d\n",id->tDMA);
printk (KERN_INFO "Single Word DMA supported modes:\n");
for (i=0,mask=1;i<8;i++,mask=mask << 1) {
if (id->dma_1word & mask)
printk (KERN_INFO " Mode %d%s\n", i, (id->dma_1word & (mask << 8)) ? " (active)" : "");
}
printk (KERN_INFO "Multi Word DMA supported modes:\n");
for (i=0,mask=1;i<8;i++,mask=mask << 1) {
if (id->dma_mword & mask)
printk (KERN_INFO " Mode %d%s\n", i, (id->dma_mword & (mask << 8)) ? " (active)" : "");
}
if (id->field_valid & 0x0002) {
printk (KERN_INFO "Enhanced PIO Modes: %s\n",id->eide_pio_modes & 1 ? "Mode 3":"None");
if (id->eide_dma_min == 0)
sprintf (buffer, "Not supported");
else
sprintf (buffer, "%d ns",id->eide_dma_min);
printk (KERN_INFO "Minimum Multi-word DMA cycle per word: %s\n", buffer);
if (id->eide_dma_time == 0)
sprintf (buffer, "Not supported");
else
sprintf (buffer, "%d ns",id->eide_dma_time);
printk (KERN_INFO "Manufacturer\'s Recommended Multi-word cycle: %s\n", buffer);
if (id->eide_pio == 0)
sprintf (buffer, "Not supported");
else
sprintf (buffer, "%d ns",id->eide_pio);
printk (KERN_INFO "Minimum PIO cycle without IORDY: %s\n", buffer);
if (id->eide_pio_iordy == 0)
sprintf (buffer, "Not supported");
else
sprintf (buffer, "%d ns",id->eide_pio_iordy);
printk (KERN_INFO "Minimum PIO cycle with IORDY: %s\n", buffer);
} else
printk (KERN_INFO "According to the device, fields 64-70 are not valid.\n");
#endif /* IDEFLOPPY_DEBUG_INFO */
if (gcw.protocol != 2)
printk (KERN_ERR "ide-floppy: Protocol is not ATAPI\n");
else if (gcw.device_type != 0)
printk (KERN_ERR "ide-floppy: Device type is not set to floppy\n");
else if (!gcw.removable)
printk (KERN_ERR "ide-floppy: The removable flag is not set\n");
else if (gcw.drq_type == 3) {
printk (KERN_ERR "ide-floppy: Sorry, DRQ type %d not supported\n", gcw.drq_type);
} else if (gcw.packet_size != 0) {
printk (KERN_ERR "ide-floppy: Packet size is not 12 bytes long\n");
} else
return 1;
return 0;
}
static void idefloppy_add_settings(ide_drive_t *drive)
{
ide_add_setting(drive, "bios_cyl", SETTING_RW, -1, -1, TYPE_INT, 0, 1023, 1, 1, &drive->bios_cyl, NULL);
ide_add_setting(drive, "bios_head", SETTING_RW, -1, -1, TYPE_BYTE, 0, 255, 1, 1, &drive->bios_head, NULL);
ide_add_setting(drive, "bios_sect", SETTING_RW, -1, -1, TYPE_BYTE, 0, 63, 1, 1, &drive->bios_sect, NULL);
}
/*
* Driver initialization.
*/
static void idefloppy_setup (ide_drive_t *drive, idefloppy_floppy_t *floppy)
{
struct idefloppy_id_gcw gcw;
int i;
*((unsigned short *) &gcw) = drive->id->config;
drive->driver_data = floppy;
drive->ready_stat = 0;
memset (floppy, 0, sizeof (idefloppy_floppy_t));
floppy->drive = drive;
floppy->pc = floppy->pc_stack;
if (gcw.drq_type == 1)
set_bit (IDEFLOPPY_DRQ_INTERRUPT, &floppy->flags);
/*
* We used to check revisions here. At this point however
* I'm giving up. Just assume they are all broken, its easier.
*
* The actual reason for the workarounds was likely
* a driver bug after all rather than a firmware bug,
* and the workaround below used to hide it. It should
* be fixed as of version 1.9, but to be on the safe side
* we'll leave the limitation below for the 2.2.x tree.
*/
if (strcmp(drive->id->model, "IOMEGA ZIP 100 ATAPI") == 0)
blk_queue_max_sectors(&drive->queue, 64);
/*
* Guess what? The IOMEGA Clik! drive also needs the
* above fix. It makes nasty clicking noises without
* it, so please don't remove this.
*/
if (strcmp(drive->id->model, "IOMEGA Clik! 40 CZ ATAPI") == 0) {
blk_queue_max_sectors(&drive->queue, 64);
set_bit(IDEFLOPPY_CLIK_DRIVE, &floppy->flags);
}
(void) idefloppy_get_capacity (drive);
idefloppy_add_settings(drive);
for (i = 0; i < MAX_DRIVES; ++i) {
struct ata_channel *hwif = drive->channel;
if (drive != &hwif->drives[i]) continue;
hwif->gd->de_arr[i] = drive->de;
if (drive->removable)
hwif->gd->flags[i] |= GENHD_FL_REMOVABLE;
break;
}
}
static int idefloppy_cleanup (ide_drive_t *drive)
{
idefloppy_floppy_t *floppy = drive->driver_data;
if (ide_unregister_subdriver (drive))
return 1;
drive->driver_data = NULL;
kfree (floppy);
return 0;
}
#ifdef CONFIG_PROC_FS
static ide_proc_entry_t idefloppy_proc[] = {
{ "geometry", S_IFREG|S_IRUGO, proc_ide_read_geometry, NULL },
{ NULL, 0, NULL, NULL }
};
#else
#define idefloppy_proc NULL
#endif /* CONFIG_PROC_FS */
/*
* IDE subdriver functions, registered with ide.c
*/
static struct ata_operations idefloppy_driver = {
owner: THIS_MODULE,
cleanup: idefloppy_cleanup,
standby: NULL,
do_request: idefloppy_do_request,
end_request: idefloppy_end_request,
ioctl: idefloppy_ioctl,
open: idefloppy_open,
release: idefloppy_release,
check_media_change: idefloppy_check_media_change,
revalidate: NULL, /* use default method */
pre_reset: NULL,
capacity: idefloppy_capacity,
special: NULL,
proc: idefloppy_proc
};
MODULE_DESCRIPTION("ATAPI FLOPPY Driver");
static void __exit idefloppy_exit (void)
{
ide_drive_t *drive;
int failed = 0;
while ((drive = ide_scan_devices(ATA_FLOPPY, "ide-floppy", &idefloppy_driver, failed)) != NULL) {
if (idefloppy_cleanup (drive)) {
printk ("%s: cleanup_module() called while still busy\n", drive->name);
failed++;
}
#ifdef CONFIG_PROC_FS
/* We must remove proc entries defined in this module.
Otherwise we oops while accessing these entries */
if (drive->proc)
ide_remove_proc_entries(drive->proc, idefloppy_proc);
#endif
}
}
/*
* idefloppy_init will register the driver for each floppy.
*/
int idefloppy_init (void)
{
ide_drive_t *drive;
idefloppy_floppy_t *floppy;
int failed = 0;
printk("ide-floppy driver " IDEFLOPPY_VERSION "\n");
MOD_INC_USE_COUNT;
while ((drive = ide_scan_devices (ATA_FLOPPY, "ide-floppy", NULL, failed++)) != NULL) {
if (!idefloppy_identify_device (drive, drive->id)) {
printk (KERN_ERR "ide-floppy: %s: not supported by this version of ide-floppy\n", drive->name);
continue;
}
if (drive->scsi) {
printk("ide-floppy: passing drive %s to ide-scsi emulation.\n", drive->name);
continue;
}
if ((floppy = (idefloppy_floppy_t *) kmalloc (sizeof (idefloppy_floppy_t), GFP_KERNEL)) == NULL) {
printk (KERN_ERR "ide-floppy: %s: Can't allocate a floppy structure\n", drive->name);
continue;
}
if (ide_register_subdriver (drive, &idefloppy_driver)) {
printk (KERN_ERR "ide-floppy: %s: Failed to register the driver with ide.c\n", drive->name);
kfree (floppy);
continue;
}
MOD_INC_USE_COUNT;
idefloppy_setup (drive, floppy);
MOD_DEC_USE_COUNT;
failed--;
}
revalidate_drives();
MOD_DEC_USE_COUNT;
return 0;
}
module_init(idefloppy_init);
module_exit(idefloppy_exit);
MODULE_LICENSE("GPL");