diff options
Diffstat (limited to 'drivers/ide/ide-floppy.c')
| -rw-r--r-- | drivers/ide/ide-floppy.c | 2353 |
1 files changed, 342 insertions, 2011 deletions
diff --git a/drivers/ide/ide-floppy.c b/drivers/ide/ide-floppy.c index 1f8db9ac05d..3d42043fec5 100644 --- a/drivers/ide/ide-floppy.c +++ b/drivers/ide/ide-floppy.c @@ -1,15 +1,9 @@ /* - * linux/drivers/ide/ide-floppy.c Version 0.99 Feb 24 2002 - * - * Copyright (C) 1996 - 1999 Gadi Oxman <gadio@netvision.net.il> - * Copyright (C) 2000 - 2002 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. + * Copyright (C) 1996-1999 Gadi Oxman <gadio@netvision.net.il> + * Copyright (C) 2000-2002 Paul Bristow <paul@paulbristow.net> + * Copyright (C) 2005 Bartlomiej Zolnierkiewicz * * This driver supports the following IDE floppy drives: * @@ -17,73 +11,10 @@ * 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 Russell - * 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. - * Ver 0.99 Feb 24 02 Remove duplicate code, modify clik! detection code - * to support new PocketZip drives + * For a historical changelog see + * Documentation/ide/ChangeLog.ide-floppy.1996-2002 */ -#define IDEFLOPPY_VERSION "0.99.newide" - -#include <linux/config.h> -#include <linux/module.h> #include <linux/types.h> #include <linux/string.h> #include <linux/kernel.h> @@ -94,1396 +25,426 @@ #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 <linux/hdreg.h> #include <linux/bitops.h> +#include <linux/mutex.h> +#include <linux/scatterlist.h> + +#include <scsi/scsi_ioctl.h> #include <asm/byteorder.h> -#include <asm/irq.h> -#include <asm/uaccess.h> -#include <asm/io.h> +#include <linux/uaccess.h> +#include <linux/io.h> #include <asm/unaligned.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... ) - -#if IDEFLOPPY_DEBUG_LOG -#define debug_log printk -#else -#define debug_log(fmt, args... ) do {} while(0) -#endif - - -/* - * Some drives require a longer irq timeout. - */ -#define IDEFLOPPY_WAIT_CMD (5 * WAIT_CMD) +#include "ide-floppy.h" /* - * After each failed packet command we issue a request sense command - * and retry the packet command IDEFLOPPY_MAX_PC_RETRIES times. + * 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 */ - int b_count; /* Missing/Available data on the current buffer */ - struct request *rq; /* The corresponding request */ - u8 *buffer; /* Data buffer */ - u8 *current_position; /* Pointer into the above buffer */ - void (*callback) (ide_drive_t *); /* Called when this packet command is completed */ - u8 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; - +/* format capacities descriptor codes */ #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_floppy_obj { - ide_drive_t *drive; - ide_driver_t *driver; - struct gendisk *disk; - struct kref kref; - - /* Current packet command */ - idefloppy_pc_t *pc; - /* Last failed packet command */ - idefloppy_pc_t *failed_pc; - /* Packet command stack */ - idefloppy_pc_t pc_stack[IDEFLOPPY_PC_STACK]; - /* Next free packet command storage space */ - int pc_stack_index; - struct request rq_stack[IDEFLOPPY_PC_STACK]; - /* We implement a circular array */ - int rq_stack_index; - - /* - * Last error information - */ - u8 sense_key, asc, ascq; - /* delay this long before sending packet command */ - u8 ticks; - int progress_indication; - - /* - * Device information - */ - /* Current format */ - int blocks, block_size, bs_factor; - /* Last format capacity */ - idefloppy_capacity_descriptor_t capacity; - /* Copy of the flexible disk page */ - idefloppy_flexible_disk_page_t flexible_disk_page; - /* Write protect */ - int wp; - /* Supports format progress report */ - int srfp; - /* Status/Action flags */ - unsigned long flags; -} idefloppy_floppy_t; - -#define IDEFLOPPY_TICKS_DELAY HZ/20 /* default delay for ZIP 100 (50ms) */ - -/* - * Floppy flag bits values. + * The following delay solves a problem with ATAPI Zip 100 drive where BSY bit + * was apparently being deasserted before the unit was ready to receive data. */ -#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 */ +#define IDEFLOPPY_PC_DELAY (HZ/20) /* default delay for ZIP 100 (50ms) */ -/* - * 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 - -#if 0 -/* - * Special requests for our block device strategy routine. - */ -#define IDEFLOPPY_FIRST_RQ 90 - -/* - * IDEFLOPPY_PC_RQ is used to queue a packet command in the request queue. - */ -#define IDEFLOPPY_PC_RQ 90 +static int ide_floppy_callback(ide_drive_t *drive, int dsc) +{ + struct ide_disk_obj *floppy = drive->driver_data; + struct ide_atapi_pc *pc = drive->pc; + struct request *rq = pc->rq; + int uptodate = pc->error ? 0 : 1; -#define IDEFLOPPY_LAST_RQ 90 + ide_debug_log(IDE_DBG_FUNC, "enter"); -/* - * A macro which can be used to check if a given request command - * originated in the driver or in the buffer cache layer. - */ -#define IDEFLOPPY_RQ_CMD(cmd) ((cmd >= IDEFLOPPY_FIRST_RQ) && (cmd <= IDEFLOPPY_LAST_RQ)) + if (drive->failed_pc == pc) + drive->failed_pc = NULL; -#endif + if (pc->c[0] == GPCMD_READ_10 || pc->c[0] == GPCMD_WRITE_10 || + rq->cmd_type == REQ_TYPE_BLOCK_PC) + uptodate = 1; /* FIXME */ + else if (pc->c[0] == GPCMD_REQUEST_SENSE) { -/* - * Error codes which are returned in rq->errors to the higher part - * of the driver. - */ -#define IDEFLOPPY_ERROR_GENERAL 101 + u8 *buf = bio_data(rq->bio); -/* - * 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 -}; + if (!pc->error) { + floppy->sense_key = buf[2] & 0x0F; + floppy->asc = buf[12]; + floppy->ascq = buf[13]; + floppy->progress_indication = buf[15] & 0x80 ? + (u16)get_unaligned((u16 *)&buf[16]) : 0x10000; -/* - * 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; + if (drive->failed_pc) + ide_debug_log(IDE_DBG_PC, "pc = %x", + drive->failed_pc->c[0]); -/* - * 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; - -static DECLARE_MUTEX(idefloppy_ref_sem); - -#define to_ide_floppy(obj) container_of(obj, struct ide_floppy_obj, kref) - -#define ide_floppy_g(disk) \ - container_of((disk)->private_data, struct ide_floppy_obj, driver) - -static struct ide_floppy_obj *ide_floppy_get(struct gendisk *disk) -{ - struct ide_floppy_obj *floppy = NULL; - - down(&idefloppy_ref_sem); - floppy = ide_floppy_g(disk); - if (floppy) - kref_get(&floppy->kref); - up(&idefloppy_ref_sem); - return floppy; -} - -static void ide_floppy_release(struct kref *); - -static void ide_floppy_put(struct ide_floppy_obj *floppy) -{ - down(&idefloppy_ref_sem); - kref_put(&floppy->kref, ide_floppy_release); - up(&idefloppy_ref_sem); -} + ide_debug_log(IDE_DBG_SENSE, "sense key = %x, asc = %x," + "ascq = %x", floppy->sense_key, + floppy->asc, floppy->ascq); + } else + printk(KERN_ERR PFX "Error in REQUEST SENSE itself - " + "Aborting request!\n"); + } -/* - * 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--) - (void) HWIF(drive)->INB(IDE_DATA_REG); -} + if (rq->cmd_type == REQ_TYPE_SPECIAL) + rq->errors = uptodate ? 0 : IDE_DRV_ERROR_GENERAL; -#if IDEFLOPPY_DEBUG_BUGS -static void idefloppy_write_zeros (ide_drive_t *drive, unsigned int bcount) -{ - while (bcount--) - HWIF(drive)->OUTB(0, IDE_DATA_REG); + return uptodate; } -#endif /* IDEFLOPPY_DEBUG_BUGS */ - -/* - * idefloppy_do_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_do_end_request(ide_drive_t *drive, int uptodate, int nsecs) +static void ide_floppy_report_error(struct ide_disk_obj *floppy, + struct ide_atapi_pc *pc) { - idefloppy_floppy_t *floppy = drive->driver_data; - struct request *rq = HWGROUP(drive)->rq; - int error; + /* suppress error messages resulting from Medium not present */ + if (floppy->sense_key == 0x02 && + floppy->asc == 0x3a && + floppy->ascq == 0x00) + return; - debug_log(KERN_INFO "Reached idefloppy_end_request\n"); + printk(KERN_ERR PFX "%s: I/O error, pc = %2x, key = %2x, " + "asc = %2x, ascq = %2x\n", + floppy->drive->name, pc->c[0], floppy->sense_key, + floppy->asc, floppy->ascq); - 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 & REQ_SPECIAL)) { //if (!IDEFLOPPY_RQ_CMD (rq->cmd)) { - /* our real local end request function */ - ide_end_request(drive, uptodate, nsecs); - return 0; - } - rq->errors = error; - /* fixme: need to move this local also */ - 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) +static ide_startstop_t ide_floppy_issue_pc(ide_drive_t *drive, + struct ide_cmd *cmd, + struct ide_atapi_pc *pc) { - struct request *rq = pc->rq; - struct bio_vec *bvec; - struct bio *bio; - unsigned long flags; - char *data; - int count, i, done = 0; - - rq_for_each_bio(bio, rq) { - bio_for_each_segment(bvec, bio, i) { - if (!bcount) - break; + struct ide_disk_obj *floppy = drive->driver_data; - count = min(bvec->bv_len, bcount); + if (drive->failed_pc == NULL && + pc->c[0] != GPCMD_REQUEST_SENSE) + drive->failed_pc = pc; - data = bvec_kmap_irq(bvec, &flags); - drive->hwif->atapi_input_bytes(drive, data, count); - bvec_kunmap_irq(data, &flags); - - bcount -= count; - pc->b_count += count; - done += count; - } - } - - idefloppy_do_end_request(drive, 1, done >> 9); - - if (bcount) { - printk(KERN_ERR "%s: leftover data in idefloppy_input_buffers, bcount == %d\n", drive->name, bcount); - idefloppy_discard_data(drive, bcount); - } -} + /* Set the current packet command */ + drive->pc = pc; -static void idefloppy_output_buffers (ide_drive_t *drive, idefloppy_pc_t *pc, unsigned int bcount) -{ - struct request *rq = pc->rq; - struct bio *bio; - struct bio_vec *bvec; - unsigned long flags; - int count, i, done = 0; - char *data; - - rq_for_each_bio(bio, rq) { - bio_for_each_segment(bvec, bio, i) { - if (!bcount) - break; + if (pc->retries > IDEFLOPPY_MAX_PC_RETRIES) { + unsigned int done = blk_rq_bytes(drive->hwif->rq); - count = min(bvec->bv_len, bcount); + if (!(pc->flags & PC_FLAG_SUPPRESS_ERROR)) + ide_floppy_report_error(floppy, pc); - data = bvec_kmap_irq(bvec, &flags); - drive->hwif->atapi_output_bytes(drive, data, count); - bvec_kunmap_irq(data, &flags); + /* Giving up */ + pc->error = IDE_DRV_ERROR_GENERAL; - bcount -= count; - pc->b_count += count; - done += count; - } + drive->failed_pc = NULL; + drive->pc_callback(drive, 0); + ide_complete_rq(drive, -EIO, done); + return ide_stopped; } - idefloppy_do_end_request(drive, 1, done >> 9); - -#if IDEFLOPPY_DEBUG_BUGS - if (bcount) { - printk(KERN_ERR "%s: leftover data in idefloppy_output_buffers, bcount == %d\n", drive->name, bcount); - idefloppy_write_zeros(drive, bcount); - } -#endif -} + ide_debug_log(IDE_DBG_FUNC, "retry #%d", pc->retries); -static void idefloppy_update_buffers (ide_drive_t *drive, idefloppy_pc_t *pc) -{ - struct request *rq = pc->rq; - struct bio *bio = rq->bio; + pc->retries++; - while ((bio = rq->bio) != NULL) - idefloppy_do_end_request(drive, 1, 0); + return ide_issue_pc(drive, cmd); } -/* - * 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) +void ide_floppy_create_read_capacity_cmd(struct ide_atapi_pc *pc) { - struct ide_floppy_obj *floppy = drive->driver_data; - - ide_init_drive_cmd(rq); - rq->buffer = (char *) pc; - rq->flags = REQ_SPECIAL; //rq->cmd = IDEFLOPPY_PC_RQ; - rq->rq_disk = floppy->disk; - (void) ide_do_drive_cmd(drive, rq, ide_preempt); + ide_init_pc(pc); + pc->c[0] = GPCMD_READ_FORMAT_CAPACITIES; + pc->c[7] = 255; + pc->c[8] = 255; + pc->req_xfer = 255; } -static idefloppy_pc_t *idefloppy_next_pc_storage (ide_drive_t *drive) +/* A mode sense command is used to "sense" floppy parameters. */ +void ide_floppy_create_mode_sense_cmd(struct ide_atapi_pc *pc, u8 page_code) { - 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++]); -} + u16 length = 8; /* sizeof(Mode Parameter Header) = 8 Bytes */ -static struct request *idefloppy_next_rq_storage (ide_drive_t *drive) -{ - idefloppy_floppy_t *floppy = drive->driver_data; + ide_init_pc(pc); + pc->c[0] = GPCMD_MODE_SENSE_10; + pc->c[1] = 0; + pc->c[2] = page_code; - if (floppy->rq_stack_index == IDEFLOPPY_PC_STACK) - floppy->rq_stack_index = 0; - return (&floppy->rq_stack[floppy->rq_stack_index++]); + switch (page_code) { + case IDEFLOPPY_CAPABILITIES_PAGE: + length += 12; + break; + case IDEFLOPPY_FLEXIBLE_DISK_PAGE: + length += 32; + break; + default: + printk(KERN_ERR PFX "unsupported page code in %s\n", __func__); + } + put_unaligned(cpu_to_be16(length), (u16 *) &pc->c[7]); + pc->req_xfer = length; } -/* - * 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) +static void idefloppy_create_rw_cmd(ide_drive_t *drive, + struct ide_atapi_pc *pc, struct request *rq, + unsigned long sector) { - 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 ? - (u16)get_unaligned((u16 *)(result->sksv+1)):0x10000; - if (floppy->failed_pc) - debug_log(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 - debug_log(KERN_INFO "ide-floppy: sense key = %x, asc = %x, " - "ascq = %x\n", result->sense_key, - result->asc, result->ascq); -} + struct ide_disk_obj *floppy = drive->driver_data; + int block = sector / floppy->bs_factor; + int blocks = blk_rq_sectors(rq) / floppy->bs_factor; + int cmd = rq_data_dir(rq); -static void idefloppy_request_sense_callback (ide_drive_t *drive) -{ - idefloppy_floppy_t *floppy = drive->driver_data; - - debug_log(KERN_INFO "ide-floppy: Reached %s\n", __FUNCTION__); - - if (!floppy->pc->error) { - idefloppy_analyze_error(drive,(idefloppy_request_sense_result_t *) floppy->pc->buffer); - idefloppy_do_end_request(drive, 1, 0); - } else { - printk(KERN_ERR "Error in REQUEST SENSE itself - Aborting request!\n"); - idefloppy_do_end_request(drive, 0, 0); - } -} + ide_debug_log(IDE_DBG_FUNC, "block: %d, blocks: %d", block, blocks); -/* - * General packet command callback function. - */ -static void idefloppy_pc_callback (ide_drive_t *drive) -{ - idefloppy_floppy_t *floppy = drive->driver_data; - - debug_log(KERN_INFO "ide-floppy: Reached %s\n", __FUNCTION__); + ide_init_pc(pc); + pc->c[0] = cmd == READ ? GPCMD_READ_10 : GPCMD_WRITE_10; + put_unaligned(cpu_to_be16(blocks), (unsigned short *)&pc->c[7]); + put_unaligned(cpu_to_be32(block), (unsigned int *) &pc->c[2]); - idefloppy_do_end_request(drive, floppy->pc->error ? 0 : 1, 0); -} + memcpy(rq->cmd, pc->c, 12); -/* - * 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->callback = &idefloppy_pc_callback; -} + pc->rq = rq; + if (rq->cmd_flags & REQ_WRITE) + pc->flags |= PC_FLAG_WRITING; -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; + pc->flags |= PC_FLAG_DMA_OK; } -/* - * 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) +static void idefloppy_blockpc_cmd(struct ide_disk_obj *floppy, + struct ide_atapi_pc *pc, struct request *rq) { - idefloppy_pc_t *pc; - struct request *rq; - atapi_error_t error; - - error.all = HWIF(drive)->INB(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); + ide_init_pc(pc); + memcpy(pc->c, rq->cmd, sizeof(pc->c)); + pc->rq = rq; + if (blk_rq_bytes(rq)) { + pc->flags |= PC_FLAG_DMA_OK; + if (rq_data_dir(rq) == WRITE) + pc->flags |= PC_FLAG_WRITING; + } } -/* - * 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) +static ide_startstop_t ide_floppy_do_request(ide_drive_t *drive, + struct request *rq, sector_t block) { - idefloppy_floppy_t *floppy = drive->driver_data; - atapi_status_t status; - atapi_bcount_t bcount; - atapi_ireason_t ireason; - idefloppy_pc_t *pc = floppy->pc; - struct request *rq = pc->rq; - unsigned int temp; + struct ide_disk_obj *floppy = drive->driver_data; + struct ide_cmd cmd; + struct ide_atapi_pc *pc; - debug_log(KERN_INFO "ide-floppy: Reached %s interrupt handler\n", - __FUNCTION__); + ide_debug_log(IDE_DBG_FUNC, "enter, cmd: 0x%x\n", rq->cmd[0]); - if (test_bit(PC_DMA_IN_PROGRESS, &pc->flags)) { - if (HWIF(drive)->ide_dma_end(drive)) { - set_bit(PC_DMA_ERROR, &pc->flags); - } else { - pc->actually_transferred = pc->request_transfer; - idefloppy_update_buffers(drive, pc); - } - debug_log(KERN_INFO "ide-floppy: DMA finished\n"); - } + if (drive->debug_mask & IDE_DBG_RQ) + blk_dump_rq_flags(rq, (rq->rq_disk + ? rq->rq_disk->disk_name + : "dev?")); - /* Clear the interrupt */ - status.all = HWIF(drive)->INB(IDE_STATUS_REG); - - if (!status.b.drq) { /* No more interrupts */ - debug_log(KERN_INFO "Packet command completed, %d bytes " - "transferred\n", pc->actually_transferred); - clear_bit(PC_DMA_IN_PROGRESS, &pc->flags); - - local_irq_enable(); - - if (status.b.check || test_bit(PC_DMA_ERROR, &pc->flags)) { - /* Error detected */ - debug_log(KERN_INFO "ide-floppy: %s: I/O error\n", - drive->name); - 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_do_reset(drive); - } - /* Retry operation */ - idefloppy_retry_pc(drive); - /* queued, but not started */ + if (rq->errors >= ERROR_MAX) { + if (drive->failed_pc) { + ide_floppy_report_error(floppy, drive->failed_pc); + drive->failed_pc = NULL; + } else + printk(KERN_ERR PFX "%s: I/O error\n", drive->name); + + if (rq->cmd_type == REQ_TYPE_SPECIAL) { + rq->errors = 0; + ide_complete_rq(drive, 0, blk_rq_bytes(rq)); return ide_stopped; - } - pc->error = 0; - if (floppy->failed_pc == pc) - floppy->failed_pc = NULL; - /* Command finished - Call the callback function */ - pc->callback(drive); - return ide_stopped; - } - - 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"); - (void)__ide_dma_off(drive); - return ide_do_reset(drive); + } else + goto out_end; } - /* Get the number of bytes to transfer */ - bcount.b.high = HWIF(drive)->INB(IDE_BCOUNTH_REG); - bcount.b.low = HWIF(drive)->INB(IDE_BCOUNTL_REG); - /* on this interrupt */ - ireason.all = HWIF(drive)->INB(IDE_IREASON_REG); - - if (ireason.b.cod) { - printk(KERN_ERR "ide-floppy: CoD != 0 in idefloppy_pc_intr\n"); - return ide_do_reset(drive); - } - 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_do_reset(drive); - } - 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); - if (HWGROUP(drive)->handler != NULL) - BUG(); - ide_set_handler(drive, - &idefloppy_pc_intr, - IDEFLOPPY_WAIT_CMD, - NULL); - return ide_started; - } - debug_log(KERN_NOTICE "ide-floppy: The floppy wants to " - "send us more data than expected - " - "allowing transfer\n"); + switch (rq->cmd_type) { + case REQ_TYPE_FS: + if (((long)blk_rq_pos(rq) % floppy->bs_factor) || + (blk_rq_sectors(rq) % floppy->bs_factor)) { + printk(KERN_ERR PFX "%s: unsupported r/w rq size\n", + drive->name); + goto out_end; } - } - if (test_bit(PC_WRITING, &pc->flags)) { - if (pc->buffer != NULL) - /* Write the current buffer */ - HWIF(drive)->atapi_output_bytes(drive, - pc->current_position, - bcount.all); - else - idefloppy_output_buffers(drive, pc, bcount.all); - } else { - if (pc->buffer != NULL) - /* Read the current buffer */ - HWIF(drive)->atapi_input_bytes(drive, - pc->current_position, - bcount.all); - else - idefloppy_input_buffers(drive, pc, bcount.all); - } - /* Update the current position */ - pc->actually_transferred += bcount.all; - pc->current_position += bcount.all; - - if (HWGROUP(drive)->handler != NULL) + pc = &floppy->queued_pc; + idefloppy_create_rw_cmd(drive, pc, rq, (unsigned long)block); + break; + case REQ_TYPE_SPECIAL: + case REQ_TYPE_SENSE: + pc = (struct ide_atapi_pc *)rq->special; + break; + case REQ_TYPE_BLOCK_PC: + pc = &floppy->queued_pc; + idefloppy_blockpc_cmd(floppy, pc, rq); + break; + default: BUG(); - 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; - atapi_ireason_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 = HWIF(drive)->INB(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_do_reset(drive); - } - if (HWGROUP(drive)->handler != NULL) - BUG(); - /* Set the interrupt routine */ - ide_set_handler(drive, &idefloppy_pc_intr, IDEFLOPPY_WAIT_CMD, NULL); - /* Send the actual packet */ - HWIF(drive)->atapi_output_bytes(drive, floppy->pc->c, 12); - 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; - - /* Send the actual packet */ - HWIF(drive)->atapi_output_bytes(drive, floppy->pc->c, 12); - /* Timeout for the packet command */ - return IDEFLOPPY_WAIT_CMD; -} - -static ide_startstop_t idefloppy_transfer_pc1 (ide_drive_t *drive) -{ - idefloppy_floppy_t *floppy = drive->driver_data; - ide_startstop_t startstop; - atapi_ireason_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 = HWIF(drive)->INB(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_do_reset(drive); - } - /* - * 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. - */ - if (HWGROUP(drive)->handler != NULL) - BUG(); - 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; -} - -/** - * idefloppy_should_report_error() - * - * Supresses error messages resulting from Medium not present - */ -static inline int idefloppy_should_report_error(idefloppy_floppy_t *floppy) -{ - if (floppy->sense_key == 0x02 && - floppy->asc == 0x3a && - floppy->ascq == 0x00) - return 0; - return 1; -} - -/* - * 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; - ide_hwif_t *hwif = drive->hwif; - atapi_feature_t feature; - atapi_bcount_t bcount; - ide_handler_t *pkt_xfer_routine; - -#if 0 /* Accessing floppy->pc is not valid here, the previous pc may be gone - and have lived on another thread's stack; that stack may have become - unmapped meanwhile (CONFIG_DEBUG_PAGEALLOC). */ -#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 */ -#endif - if (floppy->failed_pc == NULL && - pc->c[0] != IDEFLOPPY_REQUEST_SENSE_CMD) - floppy->failed_pc = pc; - /* Set the current packet command */ - floppy->pc = pc; + ide_prep_sense(drive, rq); - 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)) { - if (idefloppy_should_report_error(floppy)) - 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); - } - /* Giving up */ - pc->error = IDEFLOPPY_ERROR_GENERAL; - } - floppy->failed_pc = NULL; - pc->callback(drive); - return ide_stopped; - } + memset(&cmd, 0, sizeof(cmd)); - debug_log(KERN_INFO "Retry number - %d\n",pc->retries); + if (rq_data_dir(rq)) + cmd.tf_flags |= IDE_TFLAG_WRITE; - pc->retries++; - /* We haven't transferred any data yet */ - pc->actually_transferred = 0; - pc->current_position = pc->buffer; - bcount.all = min(pc->request_transfer, 63 * 1024); - - if (test_and_clear_bit(PC_DMA_ERROR, &pc->flags)) { - (void)__ide_dma_off(drive); - } - feature.all = 0; - - if (test_bit(PC_DMA_RECOMMENDED, &pc->flags) && drive->using_dma) - feature.b.dma = !hwif->dma_setup(drive); - - if (IDE_CONTROL_REG) - HWIF(drive)->OUTB(drive->ctl, IDE_CONTROL_REG); - /* Use PIO/DMA */ - HWIF(drive)->OUTB(feature.all, IDE_FEATURE_REG); - HWIF(drive)->OUTB(bcount.b.high, IDE_BCOUNTH_REG); - HWIF(drive)->OUTB(bcount.b.low, IDE_BCOUNTL_REG); - HWIF(drive)->OUTB(drive->select.all, IDE_SELECT_REG); - - if (feature.b.dma) { /* Begin DMA, if necessary */ - set_bit(PC_DMA_IN_PROGRESS, &pc->flags); - hwif->dma_start(drive); - } + cmd.rq = rq; - /* Can we transfer the packet when we get the interrupt or wait? */ - if (test_bit(IDEFLOPPY_ZIP_DRIVE, &floppy->flags)) { - /* wait */ - pkt_xfer_routine = &idefloppy_transfer_pc1; - } else { - /* immediate */ - pkt_xfer_routine = &idefloppy_transfer_pc; + if (rq->cmd_type == REQ_TYPE_FS || blk_rq_bytes(rq)) { + ide_init_sg_cmd(&cmd, blk_rq_bytes(rq)); + ide_map_sg(drive, &cmd); } - - if (test_bit (IDEFLOPPY_DRQ_INTERRUPT, &floppy->flags)) { - /* Issue the packet command */ - ide_execute_command(drive, WIN_PACKETCMD, - pkt_xfer_routine, - IDEFLOPPY_WAIT_CMD, - NULL); - return ide_started; - } else { - /* Issue the packet command */ - HWIF(drive)->OUTB(WIN_PACKETCMD, IDE_COMMAND_REG); - return (*pkt_xfer_routine) (drive); - } -} - -static void idefloppy_rw_callback (ide_drive_t *drive) -{ - debug_log(KERN_INFO "ide-floppy: Reached idefloppy_rw_callback\n"); - - idefloppy_do_end_request(drive, 1, 0); - return; -} - -static void idefloppy_create_prevent_cmd (idefloppy_pc_t *pc, int prevent) -{ - debug_log(KERN_INFO "ide-floppy: creating prevent removal command, " - "prevent = %d\n", prevent); - idefloppy_init_pc(pc); - pc->c[0] = IDEFLOPPY_PREVENT_REMOVAL_CMD; - pc->c[4] = prevent; -} + pc->rq = rq; -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, u8 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); + return ide_floppy_issue_pc(drive, &cmd, pc); +out_end: + drive->failed_pc = NULL; + if (rq->cmd_type != REQ_TYPE_FS && rq->errors == 0) + rq->errors = -EIO; + ide_complete_rq(drive, -EIO, blk_rq_bytes(rq)); + return ide_stopped; } /* - * A mode sense command is used to "sense" floppy parameters. + * Look at the flexible disk page parameters. We ignore the CHS capacity + * parameters and use the LBA parameters instead. */ -static void idefloppy_create_mode_sense_cmd (idefloppy_pc_t *pc, u8 page_code, u8 type) -{ - u16 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), (u16 *) &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) +static int ide_floppy_get_flexible_disk_page(ide_drive_t *drive, + struct ide_atapi_pc *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); + struct ide_disk_obj *floppy = drive->driver_data; + struct gendisk *disk = floppy->disk; + u8 *page, buf[40]; + int capacity, lba_capacity; + u16 transfer_rate, sector_size, cyls, rpm; + u8 heads, sectors; - debug_log("create_rw1%d_cmd: block == %d, blocks == %d\n", - 2 * test_bit (IDEFLOPPY_USE_READ12, &floppy->flags), - block, blocks); - - 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_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); -} + ide_floppy_create_mode_sense_cmd(pc, IDEFLOPPY_FLEXIBLE_DISK_PAGE); -static int -idefloppy_blockpc_cmd(idefloppy_floppy_t *floppy, idefloppy_pc_t *pc, struct request *rq) -{ - /* - * just support eject for now, it would not be hard to make the - * REQ_BLOCK_PC support fully-featured - */ - if (rq->cmd[0] != IDEFLOPPY_START_STOP_CMD) + if (ide_queue_pc_tail(drive, disk, pc, buf, pc->req_xfer)) { + printk(KERN_ERR PFX "Can't get flexible disk page params\n"); return 1; - - idefloppy_init_pc(pc); - memcpy(pc->c, rq->cmd, sizeof(pc->c)); - return 0; -} - -/* - * idefloppy_do_request is our request handling function. - */ -static ide_startstop_t idefloppy_do_request (ide_drive_t *drive, struct request *rq, sector_t block_s) -{ - idefloppy_floppy_t *floppy = drive->driver_data; - idefloppy_pc_t *pc; - unsigned long block = (unsigned long)block_s; - - debug_log(KERN_INFO "rq_status: %d, dev: %s, flags: %lx, errors: %d\n", - rq->rq_status, - rq->rq_disk ? rq->rq_disk->disk_name ? "?", - rq->flags, rq->errors); - debug_log(KERN_INFO "sector: %ld, nr_sectors: %ld, " - "current_nr_sectors: %d\n", (long)rq->sector, - rq->nr_sectors, rq->current_nr_sectors); - - if (rq->errors >= ERROR_MAX) { - if (floppy->failed_pc != NULL) { - if (idefloppy_should_report_error(floppy)) - 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_do_end_request(drive, 0, 0); - return ide_stopped; - } - if (rq->flags & REQ_CMD) { - if (((long)rq->sector % floppy->bs_factor) || - (rq->nr_sectors % floppy->bs_factor)) { - printk("%s: unsupported r/w request size\n", - drive->name); - idefloppy_do_end_request(drive, 0, 0); - return ide_stopped; - } - pc = idefloppy_next_pc_storage(drive); - idefloppy_create_rw_cmd(floppy, pc, rq, block); - } else if (rq->flags & REQ_SPECIAL) { - pc = (idefloppy_pc_t *) rq->buffer; - } else if (rq->flags & REQ_BLOCK_PC) { - pc = idefloppy_next_pc_storage(drive); - if (idefloppy_blockpc_cmd(floppy, pc, rq)) { - idefloppy_do_end_request(drive, 0, 0); - return ide_stopped; - } - } else { - blk_dump_rq_flags(rq, - "ide-floppy: unsupported command in queue"); - idefloppy_do_end_request(drive, 0, 0); - return ide_stopped; } - pc->rq = rq; - return idefloppy_issue_pc(drive, pc); -} + if (buf[3] & 0x80) + drive->dev_flags |= IDE_DFLAG_WP; + else + drive->dev_flags &= ~IDE_DFLAG_WP; -/* - * 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 ide_floppy_obj *floppy = drive->driver_data; - struct request rq; + set_disk_ro(disk, !!(drive->dev_flags & IDE_DFLAG_WP)); - ide_init_drive_cmd (&rq); - rq.buffer = (char *) pc; - rq.flags = REQ_SPECIAL; // rq.cmd = IDEFLOPPY_PC_RQ; - rq.rq_disk = floppy->disk; + page = &buf[8]; - return ide_do_drive_cmd(drive, &rq, ide_wait); -} + transfer_rate = be16_to_cpup((__be16 *)&buf[8 + 2]); + sector_size = be16_to_cpup((__be16 *)&buf[8 + 6]); + cyls = be16_to_cpup((__be16 *)&buf[8 + 8]); + rpm = be16_to_cpup((__be16 *)&buf[8 + 28]); + heads = buf[8 + 4]; + sectors = buf[8 + 5]; -/* - * 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; + capacity = cyls * heads * sectors * sector_size; - 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; - set_disk_ro(floppy->disk, floppy->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, " + if (memcmp(page, &floppy->flexible_disk_page, 32)) + printk(KERN_INFO PFX "%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; + drive->name, capacity / 1024, cyls, heads, + sectors, transfer_rate / 8, sector_size, rpm); + + memcpy(&floppy->flexible_disk_page, page, 32); + drive->bios_cyl = cyls; + drive->bios_head = heads; + drive->bios_sect = sectors; lba_capacity = floppy->blocks * floppy->block_size; + if (capacity < lba_capacity) { - printk(KERN_NOTICE "%s: The disk reports a capacity of %d " + printk(KERN_NOTICE PFX "%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; + floppy->blocks = floppy->block_size ? + capacity / floppy->block_size : 0; + drive->capacity64 = floppy->blocks * floppy->bs_factor; } - 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); + return 0; } /* - * Determine if a media is present in the floppy drive, and if so, - * its LBA capacity. + * 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) +static int ide_floppy_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; - + struct ide_disk_obj *floppy = drive->driver_data; + struct gendisk *disk = floppy->disk; + struct ide_atapi_pc pc; + u8 *cap_desc; + u8 pc_buf[256], header_len, desc_cnt; + int i, rc = 1, blocks, length; + + ide_debug_log(IDE_DBG_FUNC, "enter"); + drive->bios_cyl = 0; drive->bios_head = drive->bios_sect = 0; - floppy->blocks = floppy->bs_factor = 0; - set_capacity(floppy->disk, 0); + floppy->blocks = 0; + floppy->bs_factor = 1; + drive->capacity64 = 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"); + ide_floppy_create_read_capacity_cmd(&pc); + if (ide_queue_pc_tail(drive, disk, &pc, pc_buf, pc.req_xfer)) { + printk(KERN_ERR PFX "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); + header_len = pc_buf[3]; + cap_desc = &pc_buf[4]; + desc_cnt = header_len / 8; /* capacity descriptor of 8 bytes */ + + for (i = 0; i < desc_cnt; i++) { + unsigned int desc_start = 4 + i*8; + + blocks = be32_to_cpup((__be32 *)&pc_buf[desc_start]); + length = be16_to_cpup((__be16 *)&pc_buf[desc_start + 6]); - for (i = 0; i < descriptors; i++, descriptor++) { - blocks = descriptor->blocks = ntohl(descriptor->blocks); - length = descriptor->length = ntohs(descriptor->length); + ide_debug_log(IDE_DBG_PROBE, "Descriptor %d: %dkB, %d blocks, " + "%d sector size", + i, blocks * length / 1024, + blocks, length); - if (!i) - { - switch (descriptor->dc) { + if (i) + continue; + /* + * the code below is valid only for the 1st descriptor, ie i=0 + */ + + switch (pc_buf[desc_start + 4] & 0x03) { /* Clik! drive returns this instead of CAPACITY_CURRENT */ case CAPACITY_UNFORMATTED: - if (!test_bit(IDEFLOPPY_CLIK_DRIVE, &floppy->flags)) - /* + if (!(drive->atapi_flags & IDE_AFLAG_CLIK_DRIVE)) + /* * If it is not a clik drive, break out * (maintains previous driver behaviour) */ break; 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 (memcmp(cap_desc, &floppy->cap_desc, 8)) + printk(KERN_INFO PFX "%s: %dkB, %d blocks, %d " + "sector size\n", + drive->name, blocks * length / 1024, + blocks, length); + memcpy(&floppy->cap_desc, cap_desc, 8); + if (!length || length % 512) { - printk(KERN_NOTICE "%s: %d bytes block size " - "not supported\n", drive->name, length); + printk(KERN_NOTICE PFX "%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; + floppy->blocks = blocks; + floppy->block_size = length; + floppy->bs_factor = length / 512; + if (floppy->bs_factor != 1) + printk(KERN_NOTICE PFX "%s: Warning: " + "non 512 bytes block size not " + "fully supported\n", + drive->name); + drive->capacity64 = + floppy->blocks * floppy->bs_factor; + rc = 0; } break; case CAPACITY_NO_CARTRIDGE: @@ -1491,721 +452,91 @@ static int idefloppy_get_capacity (ide_drive_t *drive) * 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); + printk(KERN_ERR PFX "%s: No disk in drive\n", + drive->name); break; case CAPACITY_INVALID: - printk(KERN_ERR "%s: Invalid capacity for disk " + printk(KERN_ERR PFX "%s: Invalid capacity for disk " "in drive\n", drive->name); break; } - } - if (!i) { - debug_log( "Descriptor 0 Code: %d\n", - descriptor->dc); - } - debug_log( "Descriptor %d: %dkB, %d blocks, %d " - "sector size\n", i, blocks * length / 1024, blocks, - length); + ide_debug_log(IDE_DBG_PROBE, "Descriptor 0 Code: %d", + pc_buf[desc_start + 4] & 0x03); } /* Clik! disk does not support get_flexible_disk_page */ - if (!test_bit(IDEFLOPPY_CLIK_DRIVE, &floppy->flags)) { - (void) idefloppy_get_flexible_disk_page(drive); - } + if (!(drive->atapi_flags & IDE_AFLAG_CLIK_DRIVE)) + (void) ide_floppy_get_flexible_disk_page(drive, &pc); - set_capacity(floppy->disk, 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, int __user *arg) -{ - 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 __user *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, int __user *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); - } - - /* Get the SFRP bit */ - (void) idefloppy_get_capability_page(drive); - 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, int __user *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 { - atapi_status_t status; - unsigned long flags; - - local_irq_save(flags); - status.all = HWIF(drive)->INB(IDE_STATUS_REG); - local_irq_restore(flags); - - progress_indication = !status.b.dsc ? 0 : 0x10000; - } - if (put_user(progress_indication, arg)) - return (-EFAULT); - - return (0); -} - -/* - * Return the current floppy capacity. - */ -static sector_t 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 - u16 mask,i; - char buffer[80]; -#endif /* IDEFLOPPY_DEBUG_INFO */ - - *((u16 *) &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) +static void ide_floppy_setup(ide_drive_t *drive) { - idefloppy_floppy_t *floppy = drive->driver_data; + struct ide_disk_obj *floppy = drive->driver_data; + u16 *id = drive->id; -/* - * drive setting name read/write ioctl ioctl data type min max mul_factor div_factor data pointer set function - */ - 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); - ide_add_setting(drive, "ticks", SETTING_RW, -1, -1, TYPE_BYTE, 0, 255, 1, 1, &floppy->ticks, NULL); -} + drive->pc_callback = ide_floppy_callback; -/* - * Driver initialization. - */ -static void idefloppy_setup (ide_drive_t *drive, idefloppy_floppy_t *floppy) -{ - struct idefloppy_id_gcw gcw; - - *((u16 *) &gcw) = drive->id->config; - 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. + * 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. + * 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 (!strncmp(drive->id->model, "IOMEGA ZIP 100 ATAPI", 20)) { - set_bit(IDEFLOPPY_ZIP_DRIVE, &floppy->flags); + if (!strncmp((char *)&id[ATA_ID_PROD], "IOMEGA ZIP 100 ATAPI", 20)) { + drive->atapi_flags |= IDE_AFLAG_ZIP_DRIVE; /* This value will be visible in the /proc/ide/hdx/settings */ - floppy->ticks = IDEFLOPPY_TICKS_DELAY; - blk_queue_max_sectors(drive->queue, 64); + drive->pc_delay = IDEFLOPPY_PC_DELAY; + blk_queue_max_hw_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 (strncmp(drive->id->model, "IOMEGA Clik!", 11) == 0) { - blk_queue_max_sectors(drive->queue, 64); - set_bit(IDEFLOPPY_CLIK_DRIVE, &floppy->flags); + * 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 (strncmp((char *)&id[ATA_ID_PROD], "IOMEGA Clik!", 11) == 0) { + blk_queue_max_hw_sectors(drive->queue, 64); + drive->atapi_flags |= IDE_AFLAG_CLIK_DRIVE; + /* IOMEGA Clik! drives do not support lock/unlock commands */ + drive->dev_flags &= ~IDE_DFLAG_DOORLOCKING; } + (void) ide_floppy_get_capacity(drive); - (void) idefloppy_get_capacity(drive); - idefloppy_add_settings(drive); -} - -static void ide_floppy_remove(ide_drive_t *drive) -{ - idefloppy_floppy_t *floppy = drive->driver_data; - struct gendisk *g = floppy->disk; - - ide_unregister_subdriver(drive, floppy->driver); - - del_gendisk(g); + ide_proc_register_driver(drive, floppy->driver); - ide_floppy_put(floppy); + drive->dev_flags |= IDE_DFLAG_ATTACH; } -static void ide_floppy_release(struct kref *kref) +static void ide_floppy_flush(ide_drive_t *drive) { - struct ide_floppy_obj *floppy = to_ide_floppy(kref); - ide_drive_t *drive = floppy->drive; - struct gendisk *g = floppy->disk; - - drive->driver_data = NULL; - g->private_data = NULL; - put_disk(g); - kfree(floppy); } -#ifdef CONFIG_PROC_FS - -static int proc_idefloppy_read_capacity - (char *page, char **start, off_t off, int count, int *eof, void *data) +static int ide_floppy_init_media(ide_drive_t *drive, struct gendisk *disk) { - ide_drive_t*drive = (ide_drive_t *)data; - int len; - - len = sprintf(page,"%llu\n", (long long)idefloppy_capacity(drive)); - PROC_IDE_READ_RETURN(page,start,off,count,eof,len); -} - -static ide_proc_entry_t idefloppy_proc[] = { - { "capacity", S_IFREG|S_IRUGO, proc_idefloppy_read_capacity, NULL }, - { "geometry", S_IFREG|S_IRUGO, proc_ide_read_geometry, NULL }, - { NULL, 0, NULL, NULL } -}; - -#else - -#define idefloppy_proc NULL - -#endif /* CONFIG_PROC_FS */ - -static int ide_floppy_probe(ide_drive_t *); - -static ide_driver_t idefloppy_driver = { - .gen_driver = { - .owner = THIS_MODULE, - .name = "ide-floppy", - .bus = &ide_bus_type, - }, - .probe = ide_floppy_probe, - .remove = ide_floppy_remove, - .version = IDEFLOPPY_VERSION, - .media = ide_floppy, - .supports_dsc_overlap = 0, - .do_request = idefloppy_do_request, - .end_request = idefloppy_do_end_request, - .error = __ide_error, - .abort = __ide_abort, - .proc = idefloppy_proc, -}; - -static int idefloppy_open(struct inode *inode, struct file *filp) -{ - struct gendisk *disk = inode->i_bdev->bd_disk; - struct ide_floppy_obj *floppy; - ide_drive_t *drive; - idefloppy_pc_t pc; int ret = 0; - debug_log(KERN_INFO "Reached idefloppy_open\n"); - - if (!(floppy = ide_floppy_get(disk))) - return -ENXIO; - - drive = floppy->drive; - - drive->usage++; - - 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 (ide_do_test_unit_ready(drive, disk)) + ide_do_start_stop(drive, disk, 1); - 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--; - ret = -EIO; - goto out_put_floppy; - } + ret = ide_floppy_get_capacity(drive); - if (floppy->wp && (filp->f_mode & 2)) { - drive->usage--; - ret = -EROFS; - goto out_put_floppy; - } - 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_bdev); - } else if (test_bit(IDEFLOPPY_FORMAT_IN_PROGRESS, &floppy->flags)) { - drive->usage--; - ret = -EBUSY; - goto out_put_floppy; - } - return 0; + set_capacity(disk, ide_gd_capacity(drive)); -out_put_floppy: - ide_floppy_put(floppy); return ret; } -static int idefloppy_release(struct inode *inode, struct file *filp) -{ - struct gendisk *disk = inode->i_bdev->bd_disk; - struct ide_floppy_obj *floppy = ide_floppy_g(disk); - ide_drive_t *drive = floppy->drive; - idefloppy_pc_t pc; - - debug_log(KERN_INFO "Reached idefloppy_release\n"); - - if (drive->usage == 1) { - /* 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); - } - drive->usage--; - - ide_floppy_put(floppy); - - return 0; -} - -static int idefloppy_getgeo(struct block_device *bdev, struct hd_geometry *geo) -{ - struct ide_floppy_obj *floppy = ide_floppy_g(bdev->bd_disk); - ide_drive_t *drive = floppy->drive; - - geo->heads = drive->bios_head; - geo->sectors = drive->bios_sect; - geo->cylinders = (u16)drive->bios_cyl; /* truncate */ - return 0; -} - -static int idefloppy_ioctl(struct inode *inode, struct file *file, - unsigned int cmd, unsigned long arg) -{ - struct block_device *bdev = inode->i_bdev; - struct ide_floppy_obj *floppy = ide_floppy_g(bdev->bd_disk); - ide_drive_t *drive = floppy->drive; - void __user *argp = (void __user *)arg; - int err; - int prevent = (arg) ? 1 : 0; - idefloppy_pc_t pc; - - 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, argp); - case IDEFLOPPY_IOCTL_FORMAT_START: - - if (!(file->f_mode & 2)) - return -EPERM; - - if (drive->usage > 1) { - /* Don't format if someone is using the disk */ - - clear_bit(IDEFLOPPY_FORMAT_IN_PROGRESS, - &floppy->flags); - return -EBUSY; - } - - set_bit(IDEFLOPPY_FORMAT_IN_PROGRESS, &floppy->flags); - - err = idefloppy_begin_format(drive, argp); - if (err) - clear_bit(IDEFLOPPY_FORMAT_IN_PROGRESS, &floppy->flags); - return err; - /* - ** 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, argp); - } - return generic_ide_ioctl(drive, file, bdev, cmd, arg); -} - -static int idefloppy_media_changed(struct gendisk *disk) -{ - struct ide_floppy_obj *floppy = ide_floppy_g(disk); - ide_drive_t *drive = floppy->drive; - - /* do not scan partitions twice if this is a removable device */ - if (drive->attach) { - drive->attach = 0; - return 0; - } - return test_and_clear_bit(IDEFLOPPY_MEDIA_CHANGED, &floppy->flags); -} - -static int idefloppy_revalidate_disk(struct gendisk *disk) -{ - struct ide_floppy_obj *floppy = ide_floppy_g(disk); - set_capacity(disk, idefloppy_capacity(floppy->drive)); - return 0; -} - -static struct block_device_operations idefloppy_ops = { - .owner = THIS_MODULE, - .open = idefloppy_open, - .release = idefloppy_release, - .ioctl = idefloppy_ioctl, - .getgeo = idefloppy_getgeo, - .media_changed = idefloppy_media_changed, - .revalidate_disk= idefloppy_revalidate_disk +const struct ide_disk_ops ide_atapi_disk_ops = { + .check = ide_check_atapi_device, + .get_capacity = ide_floppy_get_capacity, + .setup = ide_floppy_setup, + .flush = ide_floppy_flush, + .init_media = ide_floppy_init_media, + .set_doorlock = ide_set_media_lock, + .do_request = ide_floppy_do_request, + .ioctl = ide_floppy_ioctl, }; - -static int ide_floppy_probe(ide_drive_t *drive) -{ - idefloppy_floppy_t *floppy; - struct gendisk *g; - - if (!strstr("ide-floppy", drive->driver_req)) - goto failed; - if (!drive->present) - goto failed; - if (drive->media != ide_floppy) - goto failed; - if (!idefloppy_identify_device (drive, drive->id)) { - printk (KERN_ERR "ide-floppy: %s: not supported by this version of ide-floppy\n", drive->name); - goto failed; - } - if (drive->scsi) { - printk("ide-floppy: passing drive %s to ide-scsi emulation.\n", drive->name); - goto failed; - } - if ((floppy = (idefloppy_floppy_t *) kzalloc (sizeof (idefloppy_floppy_t), GFP_KERNEL)) == NULL) { - printk (KERN_ERR "ide-floppy: %s: Can't allocate a floppy structure\n", drive->name); - goto failed; - } - - g = alloc_disk(1 << PARTN_BITS); - if (!g) - goto out_free_floppy; - - ide_init_disk(g, drive); - - ide_register_subdriver(drive, &idefloppy_driver); - - kref_init(&floppy->kref); - - floppy->drive = drive; - floppy->driver = &idefloppy_driver; - floppy->disk = g; - - g->private_data = &floppy->driver; - - drive->driver_data = floppy; - - idefloppy_setup (drive, floppy); - - g->minors = 1 << PARTN_BITS; - g->driverfs_dev = &drive->gendev; - strcpy(g->devfs_name, drive->devfs_name); - g->flags = drive->removable ? GENHD_FL_REMOVABLE : 0; - g->fops = &idefloppy_ops; - drive->attach = 1; - add_disk(g); - return 0; - -out_free_floppy: - kfree(floppy); -failed: - return -ENODEV; -} - -MODULE_DESCRIPTION("ATAPI FLOPPY Driver"); - -static void __exit idefloppy_exit (void) -{ - driver_unregister(&idefloppy_driver.gen_driver); -} - -static int __init idefloppy_init(void) -{ - printk("ide-floppy driver " IDEFLOPPY_VERSION "\n"); - return driver_register(&idefloppy_driver.gen_driver); -} - -MODULE_ALIAS("ide:*m-floppy*"); -module_init(idefloppy_init); -module_exit(idefloppy_exit); -MODULE_LICENSE("GPL"); |