Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/drivers/ide/ide-floppy.c b/drivers/ide/ide-floppy.c
new file mode 100644
index 0000000..36c0b74
--- /dev/null
+++ b/drivers/ide/ide-floppy.c
@@ -0,0 +1,2211 @@
+/*
+ * 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.
+ *
+ * This driver supports the following IDE floppy drives:
+ *
+ * LS-120/240 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 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
+ */
+
+#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>
+#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 <linux/bitops.h>
+
+#include <asm/byteorder.h>
+#include <asm/irq.h>
+#include <asm/uaccess.h>
+#include <asm/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)
+
+/*
+ * 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;
+
+#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 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
+
+#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
+
+#define IDEFLOPPY_LAST_RQ 90
+
+/*
+ * 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))
+
+#endif
+
+/*
+ * Error codes which are returned in rq->errors to the higher part
+ * of the driver.
+ */
+#define IDEFLOPPY_ERROR_GENERAL 101
+
+/*
+ * 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;
+
+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);
+}
+
+/*
+ * 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 IDEFLOPPY_DEBUG_BUGS
+static void idefloppy_write_zeros (ide_drive_t *drive, unsigned int bcount)
+{
+ while (bcount--)
+ HWIF(drive)->OUTB(0, IDE_DATA_REG);
+}
+#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)
+{
+ idefloppy_floppy_t *floppy = drive->driver_data;
+ struct request *rq = HWGROUP(drive)->rq;
+ int error;
+
+ debug_log(KERN_INFO "Reached idefloppy_end_request\n");
+
+ 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)
+{
+ 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;
+
+ count = min(bvec->bv_len, bcount);
+
+ 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);
+ }
+}
+
+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;
+
+ count = min(bvec->bv_len, bcount);
+
+ data = bvec_kmap_irq(bvec, &flags);
+ drive->hwif->atapi_output_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_output_buffers, bcount == %d\n", drive->name, bcount);
+ idefloppy_write_zeros(drive, bcount);
+ }
+}
+
+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_do_end_request(drive, 1, 0);
+}
+
+/*
+ * 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)
+{
+ 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);
+}
+
+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 ?
+ (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);
+}
+
+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);
+ }
+}
+
+/*
+ * 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__);
+
+ idefloppy_do_end_request(drive, floppy->pc->error ? 0 : 1, 0);
+}
+
+/*
+ * 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;
+}
+
+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;
+ 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);
+}
+
+/*
+ * 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;
+ 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;
+
+ debug_log(KERN_INFO "ide-floppy: Reached %s interrupt handler\n",
+ __FUNCTION__);
+
+ 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");
+ }
+
+ /* 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 */
+ 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);
+ }
+
+ /* 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");
+ }
+ }
+ 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)
+ 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 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;
+ /* Set the current packet command */
+ floppy->pc = pc;
+
+ 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;
+ }
+
+ debug_log(KERN_INFO "Retry number - %d\n",pc->retries);
+
+ 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);
+ }
+
+ /* 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 (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;
+}
+
+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);
+}
+
+/*
+ * A mode sense command is used to "sense" floppy parameters.
+ */
+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)
+{
+ 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);
+
+ 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);
+}
+
+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)
+ 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);
+}
+
+/*
+ * 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;
+
+ ide_init_drive_cmd (&rq);
+ rq.buffer = (char *) pc;
+ rq.flags = REQ_SPECIAL; // rq.cmd = IDEFLOPPY_PC_RQ;
+ rq.rq_disk = floppy->disk;
+
+ 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;
+ 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, "
+ "%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;
+ set_capacity(floppy->disk, 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) {
+ /* Clik! drive returns this instead of CAPACITY_CURRENT */
+ case CAPACITY_UNFORMATTED:
+ if (!test_bit(IDEFLOPPY_CLIK_DRIVE, &floppy->flags))
+ /*
+ * 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 (!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) {
+ 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);
+ }
+
+ /* Clik! disk does not support get_flexible_disk_page */
+ if (!test_bit(IDEFLOPPY_CLIK_DRIVE, &floppy->flags)) {
+ (void) idefloppy_get_flexible_disk_page(drive);
+ }
+
+ 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)
+{
+ idefloppy_floppy_t *floppy = drive->driver_data;
+
+/*
+ * 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);
+}
+
+/*
+ * 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.
+ *
+ * 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);
+ /* This value will be visible in the /proc/ide/hdx/settings */
+ floppy->ticks = IDEFLOPPY_TICKS_DELAY;
+ 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 (strncmp(drive->id->model, "IOMEGA Clik!", 11) == 0) {
+ blk_queue_max_sectors(drive->queue, 64);
+ set_bit(IDEFLOPPY_CLIK_DRIVE, &floppy->flags);
+ }
+
+
+ (void) idefloppy_get_capacity(drive);
+ idefloppy_add_settings(drive);
+}
+
+static int idefloppy_cleanup (ide_drive_t *drive)
+{
+ idefloppy_floppy_t *floppy = drive->driver_data;
+ struct gendisk *g = floppy->disk;
+
+ if (ide_unregister_subdriver(drive))
+ return 1;
+
+ del_gendisk(g);
+
+ ide_floppy_put(floppy);
+
+ return 0;
+}
+
+static void ide_floppy_release(struct kref *kref)
+{
+ 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)
+{
+ 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 idefloppy_attach(ide_drive_t *drive);
+
+/*
+ * IDE subdriver functions, registered with ide.c
+ */
+static ide_driver_t idefloppy_driver = {
+ .owner = THIS_MODULE,
+ .name = "ide-floppy",
+ .version = IDEFLOPPY_VERSION,
+ .media = ide_floppy,
+ .busy = 0,
+ .supports_dsc_overlap = 0,
+ .cleanup = idefloppy_cleanup,
+ .do_request = idefloppy_do_request,
+ .end_request = idefloppy_do_end_request,
+ .error = __ide_error,
+ .abort = __ide_abort,
+ .proc = idefloppy_proc,
+ .attach = idefloppy_attach,
+ .drives = LIST_HEAD_INIT(idefloppy_driver.drives),
+};
+
+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 (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;
+ }
+
+ 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;
+
+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_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 = generic_ide_ioctl(drive, file, bdev, cmd, arg);
+ int prevent = (arg) ? 1 : 0;
+ idefloppy_pc_t pc;
+ if (err != -EINVAL)
+ return err;
+
+ 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 -EINVAL;
+}
+
+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,
+ .media_changed = idefloppy_media_changed,
+ .revalidate_disk= idefloppy_revalidate_disk
+};
+
+static int idefloppy_attach (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 *) kmalloc (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);
+
+ if (ide_register_subdriver(drive, &idefloppy_driver)) {
+ printk (KERN_ERR "ide-floppy: %s: Failed to register the driver with ide.c\n", drive->name);
+ goto out_put_disk;
+ }
+
+ memset(floppy, 0, sizeof(*floppy));
+
+ kref_init(&floppy->kref);
+
+ floppy->drive = drive;
+ floppy->driver = &idefloppy_driver;
+ floppy->disk = g;
+
+ g->private_data = &floppy->driver;
+
+ drive->driver_data = floppy;
+
+ DRIVER(drive)->busy++;
+ idefloppy_setup (drive, floppy);
+ DRIVER(drive)->busy--;
+ 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_put_disk:
+ put_disk(g);
+out_free_floppy:
+ kfree(floppy);
+failed:
+ return 1;
+}
+
+MODULE_DESCRIPTION("ATAPI FLOPPY Driver");
+
+static void __exit idefloppy_exit (void)
+{
+ ide_unregister_driver(&idefloppy_driver);
+}
+
+/*
+ * idefloppy_init will register the driver for each floppy.
+ */
+static int idefloppy_init (void)
+{
+ printk("ide-floppy driver " IDEFLOPPY_VERSION "\n");
+ ide_register_driver(&idefloppy_driver);
+ return 0;
+}
+
+module_init(idefloppy_init);
+module_exit(idefloppy_exit);
+MODULE_LICENSE("GPL");
