2181 lines
65 KiB
C
2181 lines
65 KiB
C
/*
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* linux/drivers/ide/ide-floppy.c Version 0.99 Feb 24 2002
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*
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* Copyright (C) 1996 - 1999 Gadi Oxman <gadio@netvision.net.il>
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* Copyright (C) 2000 - 2002 Paul Bristow <paul@paulbristow.net>
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*/
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/*
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* IDE ATAPI floppy driver.
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*
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* The driver currently doesn't have any fancy features, just the bare
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* minimum read/write support.
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*
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* This driver supports the following IDE floppy drives:
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*
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* LS-120/240 SuperDisk
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* Iomega Zip 100/250
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* Iomega PC Card Clik!/PocketZip
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*
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* Many thanks to Lode Leroy <Lode.Leroy@www.ibase.be>, who tested so many
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* ALPHA patches to this driver on an EASYSTOR LS-120 ATAPI floppy drive.
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*
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* Ver 0.1 Oct 17 96 Initial test version, mostly based on ide-tape.c.
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* Ver 0.2 Oct 31 96 Minor changes.
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* Ver 0.3 Dec 2 96 Fixed error recovery bug.
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* Ver 0.4 Jan 26 97 Add support for the HDIO_GETGEO ioctl.
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* Ver 0.5 Feb 21 97 Add partitions support.
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* Use the minimum of the LBA and CHS capacities.
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* Avoid hwgroup->rq == NULL on the last irq.
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* Fix potential null dereferencing with DEBUG_LOG.
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* Ver 0.8 Dec 7 97 Increase irq timeout from 10 to 50 seconds.
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* Add media write-protect detection.
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* Issue START command only if TEST UNIT READY fails.
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* Add work-around for IOMEGA ZIP revision 21.D.
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* Remove idefloppy_get_capabilities().
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* Ver 0.9 Jul 4 99 Fix a bug which might have caused the number of
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* bytes requested on each interrupt to be zero.
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* Thanks to <shanos@es.co.nz> for pointing this out.
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* Ver 0.9.sv Jan 6 01 Sam Varshavchik <mrsam@courier-mta.com>
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* Implement low level formatting. Reimplemented
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* IDEFLOPPY_CAPABILITIES_PAGE, since we need the srfp
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* bit. My LS-120 drive barfs on
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* IDEFLOPPY_CAPABILITIES_PAGE, but maybe it's just me.
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* Compromise by not reporting a failure to get this
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* mode page. Implemented four IOCTLs in order to
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* implement formatting. IOCTls begin with 0x4600,
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* 0x46 is 'F' as in Format.
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* Jan 9 01 Userland option to select format verify.
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* Added PC_SUPPRESS_ERROR flag - some idefloppy drives
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* do not implement IDEFLOPPY_CAPABILITIES_PAGE, and
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* return a sense error. Suppress error reporting in
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* this particular case in order to avoid spurious
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* errors in syslog. The culprit is
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* idefloppy_get_capability_page(), so move it to
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* idefloppy_begin_format() so that it's not used
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* unless absolutely necessary.
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* If drive does not support format progress indication
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* monitor the dsc bit in the status register.
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* Also, O_NDELAY on open will allow the device to be
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* opened without a disk available. This can be used to
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* open an unformatted disk, or get the device capacity.
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* Ver 0.91 Dec 11 99 Added IOMEGA Clik! drive support by
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* <paul@paulbristow.net>
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* Ver 0.92 Oct 22 00 Paul Bristow became official maintainer for this
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* driver. Included Powerbook internal zip kludge.
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* Ver 0.93 Oct 24 00 Fixed bugs for Clik! drive
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* no disk on insert and disk change now works
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* Ver 0.94 Oct 27 00 Tidied up to remove strstr(Clik) everywhere
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* Ver 0.95 Nov 7 00 Brought across to kernel 2.4
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* Ver 0.96 Jan 7 01 Actually in line with release version of 2.4.0
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* including set_bit patch from Rusty Russell
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* Ver 0.97 Jul 22 01 Merge 0.91-0.96 onto 0.9.sv for ac series
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* Ver 0.97.sv Aug 3 01 Backported from 2.4.7-ac3
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* Ver 0.98 Oct 26 01 Split idefloppy_transfer_pc into two pieces to
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* fix a lost interrupt problem. It appears the busy
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* bit was being deasserted by my IOMEGA ATAPI ZIP 100
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* drive before the drive was actually ready.
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* Ver 0.98a Oct 29 01 Expose delay value so we can play.
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* Ver 0.99 Feb 24 02 Remove duplicate code, modify clik! detection code
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* to support new PocketZip drives
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*/
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#define IDEFLOPPY_VERSION "0.99.newide"
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#include <linux/module.h>
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#include <linux/types.h>
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#include <linux/string.h>
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#include <linux/kernel.h>
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#include <linux/delay.h>
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#include <linux/timer.h>
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#include <linux/mm.h>
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#include <linux/interrupt.h>
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#include <linux/major.h>
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#include <linux/errno.h>
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#include <linux/genhd.h>
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#include <linux/slab.h>
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#include <linux/cdrom.h>
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#include <linux/ide.h>
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#include <linux/bitops.h>
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#include <linux/mutex.h>
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#include <scsi/scsi_ioctl.h>
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#include <asm/byteorder.h>
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#include <asm/irq.h>
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#include <asm/uaccess.h>
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#include <asm/io.h>
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#include <asm/unaligned.h>
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/*
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* The following are used to debug the driver.
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*/
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#define IDEFLOPPY_DEBUG_LOG 0
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#define IDEFLOPPY_DEBUG_INFO 0
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#define IDEFLOPPY_DEBUG_BUGS 1
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/* #define IDEFLOPPY_DEBUG(fmt, args...) printk(KERN_INFO fmt, ## args) */
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#define IDEFLOPPY_DEBUG( fmt, args... )
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#if IDEFLOPPY_DEBUG_LOG
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#define debug_log printk
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#else
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#define debug_log(fmt, args... ) do {} while(0)
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#endif
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/*
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* Some drives require a longer irq timeout.
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*/
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#define IDEFLOPPY_WAIT_CMD (5 * WAIT_CMD)
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/*
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* After each failed packet command we issue a request sense command
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* and retry the packet command IDEFLOPPY_MAX_PC_RETRIES times.
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*/
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#define IDEFLOPPY_MAX_PC_RETRIES 3
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/*
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* With each packet command, we allocate a buffer of
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* IDEFLOPPY_PC_BUFFER_SIZE bytes.
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*/
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#define IDEFLOPPY_PC_BUFFER_SIZE 256
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/*
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* In various places in the driver, we need to allocate storage
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* for packet commands and requests, which will remain valid while
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* we leave the driver to wait for an interrupt or a timeout event.
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*/
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#define IDEFLOPPY_PC_STACK (10 + IDEFLOPPY_MAX_PC_RETRIES)
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/*
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* Our view of a packet command.
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*/
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typedef struct idefloppy_packet_command_s {
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u8 c[12]; /* Actual packet bytes */
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int retries; /* On each retry, we increment retries */
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int error; /* Error code */
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int request_transfer; /* Bytes to transfer */
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int actually_transferred; /* Bytes actually transferred */
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int buffer_size; /* Size of our data buffer */
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int b_count; /* Missing/Available data on the current buffer */
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struct request *rq; /* The corresponding request */
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u8 *buffer; /* Data buffer */
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u8 *current_position; /* Pointer into the above buffer */
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void (*callback) (ide_drive_t *); /* Called when this packet command is completed */
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u8 pc_buffer[IDEFLOPPY_PC_BUFFER_SIZE]; /* Temporary buffer */
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unsigned long flags; /* Status/Action bit flags: long for set_bit */
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} idefloppy_pc_t;
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/*
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* Packet command flag bits.
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*/
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#define PC_ABORT 0 /* Set when an error is considered normal - We won't retry */
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#define PC_DMA_RECOMMENDED 2 /* 1 when we prefer to use DMA if possible */
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#define PC_DMA_IN_PROGRESS 3 /* 1 while DMA in progress */
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#define PC_DMA_ERROR 4 /* 1 when encountered problem during DMA */
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#define PC_WRITING 5 /* Data direction */
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#define PC_SUPPRESS_ERROR 6 /* Suppress error reporting */
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/*
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* Removable Block Access Capabilities Page
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*/
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typedef struct {
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#if defined(__LITTLE_ENDIAN_BITFIELD)
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unsigned page_code :6; /* Page code - Should be 0x1b */
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unsigned reserved1_6 :1; /* Reserved */
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unsigned ps :1; /* Should be 0 */
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#elif defined(__BIG_ENDIAN_BITFIELD)
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unsigned ps :1; /* Should be 0 */
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unsigned reserved1_6 :1; /* Reserved */
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unsigned page_code :6; /* Page code - Should be 0x1b */
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#else
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#error "Bitfield endianness not defined! Check your byteorder.h"
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#endif
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u8 page_length; /* Page Length - Should be 0xa */
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#if defined(__LITTLE_ENDIAN_BITFIELD)
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unsigned reserved2 :6;
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unsigned srfp :1; /* Supports reporting progress of format */
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unsigned sflp :1; /* System floppy type device */
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unsigned tlun :3; /* Total logical units supported by the device */
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unsigned reserved3 :3;
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unsigned sml :1; /* Single / Multiple lun supported */
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unsigned ncd :1; /* Non cd optical device */
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#elif defined(__BIG_ENDIAN_BITFIELD)
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unsigned sflp :1; /* System floppy type device */
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unsigned srfp :1; /* Supports reporting progress of format */
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unsigned reserved2 :6;
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unsigned ncd :1; /* Non cd optical device */
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unsigned sml :1; /* Single / Multiple lun supported */
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unsigned reserved3 :3;
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unsigned tlun :3; /* Total logical units supported by the device */
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#else
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#error "Bitfield endianness not defined! Check your byteorder.h"
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#endif
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u8 reserved[8];
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} idefloppy_capabilities_page_t;
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/*
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* Flexible disk page.
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*/
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typedef struct {
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#if defined(__LITTLE_ENDIAN_BITFIELD)
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unsigned page_code :6; /* Page code - Should be 0x5 */
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unsigned reserved1_6 :1; /* Reserved */
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unsigned ps :1; /* The device is capable of saving the page */
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#elif defined(__BIG_ENDIAN_BITFIELD)
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unsigned ps :1; /* The device is capable of saving the page */
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unsigned reserved1_6 :1; /* Reserved */
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unsigned page_code :6; /* Page code - Should be 0x5 */
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#else
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#error "Bitfield endianness not defined! Check your byteorder.h"
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#endif
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u8 page_length; /* Page Length - Should be 0x1e */
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u16 transfer_rate; /* In kilobits per second */
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u8 heads, sectors; /* Number of heads, Number of sectors per track */
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u16 sector_size; /* Byes per sector */
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u16 cyls; /* Number of cylinders */
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u8 reserved10[10];
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u8 motor_delay; /* Motor off delay */
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u8 reserved21[7];
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u16 rpm; /* Rotations per minute */
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u8 reserved30[2];
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} idefloppy_flexible_disk_page_t;
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/*
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* Format capacity
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*/
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typedef struct {
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u8 reserved[3];
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u8 length; /* Length of the following descriptors in bytes */
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} idefloppy_capacity_header_t;
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typedef struct {
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u32 blocks; /* Number of blocks */
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#if defined(__LITTLE_ENDIAN_BITFIELD)
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unsigned dc :2; /* Descriptor Code */
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unsigned reserved :6;
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#elif defined(__BIG_ENDIAN_BITFIELD)
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unsigned reserved :6;
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unsigned dc :2; /* Descriptor Code */
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#else
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#error "Bitfield endianness not defined! Check your byteorder.h"
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#endif
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u8 length_msb; /* Block Length (MSB)*/
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u16 length; /* Block Length */
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} idefloppy_capacity_descriptor_t;
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#define CAPACITY_INVALID 0x00
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#define CAPACITY_UNFORMATTED 0x01
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#define CAPACITY_CURRENT 0x02
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#define CAPACITY_NO_CARTRIDGE 0x03
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/*
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* Most of our global data which we need to save even as we leave the
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* driver due to an interrupt or a timer event is stored in a variable
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* of type idefloppy_floppy_t, defined below.
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*/
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typedef struct ide_floppy_obj {
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ide_drive_t *drive;
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ide_driver_t *driver;
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struct gendisk *disk;
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struct kref kref;
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unsigned int openers; /* protected by BKL for now */
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/* Current packet command */
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idefloppy_pc_t *pc;
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/* Last failed packet command */
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idefloppy_pc_t *failed_pc;
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/* Packet command stack */
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idefloppy_pc_t pc_stack[IDEFLOPPY_PC_STACK];
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/* Next free packet command storage space */
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int pc_stack_index;
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struct request rq_stack[IDEFLOPPY_PC_STACK];
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/* We implement a circular array */
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int rq_stack_index;
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/*
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* Last error information
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*/
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u8 sense_key, asc, ascq;
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/* delay this long before sending packet command */
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u8 ticks;
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int progress_indication;
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/*
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* Device information
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*/
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/* Current format */
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int blocks, block_size, bs_factor;
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/* Last format capacity */
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idefloppy_capacity_descriptor_t capacity;
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/* Copy of the flexible disk page */
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idefloppy_flexible_disk_page_t flexible_disk_page;
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/* Write protect */
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int wp;
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/* Supports format progress report */
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int srfp;
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/* Status/Action flags */
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unsigned long flags;
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} idefloppy_floppy_t;
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#define IDEFLOPPY_TICKS_DELAY HZ/20 /* default delay for ZIP 100 (50ms) */
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/*
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* Floppy flag bits values.
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*/
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#define IDEFLOPPY_DRQ_INTERRUPT 0 /* DRQ interrupt device */
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#define IDEFLOPPY_MEDIA_CHANGED 1 /* Media may have changed */
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#define IDEFLOPPY_USE_READ12 2 /* Use READ12/WRITE12 or READ10/WRITE10 */
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#define IDEFLOPPY_FORMAT_IN_PROGRESS 3 /* Format in progress */
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#define IDEFLOPPY_CLIK_DRIVE 4 /* Avoid commands not supported in Clik drive */
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#define IDEFLOPPY_ZIP_DRIVE 5 /* Requires BH algorithm for packets */
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/*
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* ATAPI floppy drive packet commands
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*/
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#define IDEFLOPPY_FORMAT_UNIT_CMD 0x04
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#define IDEFLOPPY_INQUIRY_CMD 0x12
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#define IDEFLOPPY_MODE_SELECT_CMD 0x55
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#define IDEFLOPPY_MODE_SENSE_CMD 0x5a
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#define IDEFLOPPY_READ10_CMD 0x28
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#define IDEFLOPPY_READ12_CMD 0xa8
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#define IDEFLOPPY_READ_CAPACITY_CMD 0x23
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#define IDEFLOPPY_REQUEST_SENSE_CMD 0x03
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#define IDEFLOPPY_PREVENT_REMOVAL_CMD 0x1e
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#define IDEFLOPPY_SEEK_CMD 0x2b
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#define IDEFLOPPY_START_STOP_CMD 0x1b
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#define IDEFLOPPY_TEST_UNIT_READY_CMD 0x00
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#define IDEFLOPPY_VERIFY_CMD 0x2f
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#define IDEFLOPPY_WRITE10_CMD 0x2a
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#define IDEFLOPPY_WRITE12_CMD 0xaa
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#define IDEFLOPPY_WRITE_VERIFY_CMD 0x2e
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/*
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* Defines for the mode sense command
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*/
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#define MODE_SENSE_CURRENT 0x00
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#define MODE_SENSE_CHANGEABLE 0x01
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#define MODE_SENSE_DEFAULT 0x02
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#define MODE_SENSE_SAVED 0x03
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/*
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* IOCTLs used in low-level formatting.
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*/
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#define IDEFLOPPY_IOCTL_FORMAT_SUPPORTED 0x4600
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#define IDEFLOPPY_IOCTL_FORMAT_GET_CAPACITY 0x4601
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#define IDEFLOPPY_IOCTL_FORMAT_START 0x4602
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#define IDEFLOPPY_IOCTL_FORMAT_GET_PROGRESS 0x4603
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/*
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* Error codes which are returned in rq->errors to the higher part
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* of the driver.
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*/
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#define IDEFLOPPY_ERROR_GENERAL 101
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/*
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* The following is used to format the general configuration word of
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* the ATAPI IDENTIFY DEVICE command.
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*/
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struct idefloppy_id_gcw {
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#if defined(__LITTLE_ENDIAN_BITFIELD)
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unsigned packet_size :2; /* Packet Size */
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unsigned reserved234 :3; /* Reserved */
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unsigned drq_type :2; /* Command packet DRQ type */
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unsigned removable :1; /* Removable media */
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unsigned device_type :5; /* Device type */
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unsigned reserved13 :1; /* Reserved */
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unsigned protocol :2; /* Protocol type */
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#elif defined(__BIG_ENDIAN_BITFIELD)
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unsigned protocol :2; /* Protocol type */
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unsigned reserved13 :1; /* Reserved */
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unsigned device_type :5; /* Device type */
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unsigned removable :1; /* Removable media */
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unsigned drq_type :2; /* Command packet DRQ type */
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unsigned reserved234 :3; /* Reserved */
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unsigned packet_size :2; /* Packet Size */
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#else
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#error "Bitfield endianness not defined! Check your byteorder.h"
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#endif
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};
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/*
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* INQUIRY packet command - Data Format
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*/
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typedef struct {
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#if defined(__LITTLE_ENDIAN_BITFIELD)
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unsigned device_type :5; /* Peripheral Device Type */
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unsigned reserved0_765 :3; /* Peripheral Qualifier - Reserved */
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unsigned reserved1_6t0 :7; /* Reserved */
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unsigned rmb :1; /* Removable Medium Bit */
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unsigned ansi_version :3; /* ANSI Version */
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unsigned ecma_version :3; /* ECMA Version */
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unsigned iso_version :2; /* ISO Version */
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unsigned response_format :4; /* Response Data Format */
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unsigned reserved3_45 :2; /* Reserved */
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unsigned reserved3_6 :1; /* TrmIOP - Reserved */
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unsigned reserved3_7 :1; /* AENC - Reserved */
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#elif defined(__BIG_ENDIAN_BITFIELD)
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unsigned reserved0_765 :3; /* Peripheral Qualifier - Reserved */
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unsigned device_type :5; /* Peripheral Device Type */
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unsigned rmb :1; /* Removable Medium Bit */
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unsigned reserved1_6t0 :7; /* Reserved */
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unsigned iso_version :2; /* ISO Version */
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unsigned ecma_version :3; /* ECMA Version */
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unsigned ansi_version :3; /* ANSI Version */
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unsigned reserved3_7 :1; /* AENC - Reserved */
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unsigned reserved3_6 :1; /* TrmIOP - Reserved */
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unsigned reserved3_45 :2; /* Reserved */
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unsigned response_format :4; /* Response Data Format */
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#else
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#error "Bitfield endianness not defined! Check your byteorder.h"
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#endif
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u8 additional_length; /* Additional Length (total_length-4) */
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u8 rsv5, rsv6, rsv7; /* Reserved */
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u8 vendor_id[8]; /* Vendor Identification */
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u8 product_id[16]; /* Product Identification */
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u8 revision_level[4]; /* Revision Level */
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u8 vendor_specific[20]; /* Vendor Specific - Optional */
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u8 reserved56t95[40]; /* Reserved - Optional */
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/* Additional information may be returned */
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} idefloppy_inquiry_result_t;
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|
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/*
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* REQUEST SENSE packet command result - Data Format.
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*/
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typedef struct {
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#if defined(__LITTLE_ENDIAN_BITFIELD)
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unsigned error_code :7; /* Current error (0x70) */
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unsigned valid :1; /* The information field conforms to SFF-8070i */
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u8 reserved1 :8; /* Reserved */
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unsigned sense_key :4; /* Sense Key */
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unsigned reserved2_4 :1; /* Reserved */
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unsigned ili :1; /* Incorrect Length Indicator */
|
|
unsigned reserved2_67 :2;
|
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#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 DEFINE_MUTEX(idefloppy_ref_mutex);
|
|
|
|
#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;
|
|
|
|
mutex_lock(&idefloppy_ref_mutex);
|
|
floppy = ide_floppy_g(disk);
|
|
if (floppy)
|
|
kref_get(&floppy->kref);
|
|
mutex_unlock(&idefloppy_ref_mutex);
|
|
return floppy;
|
|
}
|
|
|
|
static void ide_floppy_release(struct kref *);
|
|
|
|
static void ide_floppy_put(struct ide_floppy_obj *floppy)
|
|
{
|
|
mutex_lock(&idefloppy_ref_mutex);
|
|
kref_put(&floppy->kref, ide_floppy_release);
|
|
mutex_unlock(&idefloppy_ref_mutex);
|
|
}
|
|
|
|
/*
|
|
* 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 (!blk_special_request(rq)) {
|
|
/* 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 req_iterator iter;
|
|
unsigned long flags;
|
|
char *data;
|
|
int count, done = 0;
|
|
|
|
rq_for_each_segment(bvec, rq, iter) {
|
|
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 req_iterator iter;
|
|
struct bio_vec *bvec;
|
|
unsigned long flags;
|
|
int count, done = 0;
|
|
char *data;
|
|
|
|
rq_for_each_segment(bvec, rq, iter) {
|
|
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 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
|
|
}
|
|
|
|
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->cmd_type = REQ_TYPE_SPECIAL;
|
|
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;
|
|
|
|
(void)drive->hwif->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;
|
|
ide_hwif_t *hwif = drive->hwif;
|
|
idefloppy_pc_t *pc = floppy->pc;
|
|
struct request *rq = pc->rq;
|
|
unsigned int temp;
|
|
u16 bcount;
|
|
u8 stat, ireason;
|
|
|
|
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 */
|
|
stat = drive->hwif->INB(IDE_STATUS_REG);
|
|
|
|
if ((stat & DRQ_STAT) == 0) { /* 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_in_hardirq();
|
|
|
|
if ((stat & ERR_STAT) || 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");
|
|
ide_dma_off(drive);
|
|
return ide_do_reset(drive);
|
|
}
|
|
|
|
/* Get the number of bytes to transfer */
|
|
bcount = (hwif->INB(IDE_BCOUNTH_REG) << 8) |
|
|
hwif->INB(IDE_BCOUNTL_REG);
|
|
/* on this interrupt */
|
|
ireason = hwif->INB(IDE_IREASON_REG);
|
|
|
|
if (ireason & CD) {
|
|
printk(KERN_ERR "ide-floppy: CoD != 0 in idefloppy_pc_intr\n");
|
|
return ide_do_reset(drive);
|
|
}
|
|
if (((ireason & IO) == IO) == test_bit(PC_WRITING, &pc->flags)) {
|
|
/* Hopefully, we will never get here */
|
|
printk(KERN_ERR "ide-floppy: We wanted to %s, ",
|
|
(ireason & IO) ? "Write" : "Read");
|
|
printk(KERN_ERR "but the floppy wants us to %s !\n",
|
|
(ireason & 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;
|
|
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);
|
|
BUG_ON(HWGROUP(drive)->handler != NULL);
|
|
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->atapi_output_bytes(drive, pc->current_position,
|
|
bcount);
|
|
else
|
|
idefloppy_output_buffers(drive, pc, bcount);
|
|
} else {
|
|
if (pc->buffer != NULL)
|
|
/* Read the current buffer */
|
|
hwif->atapi_input_bytes(drive, pc->current_position,
|
|
bcount);
|
|
else
|
|
idefloppy_input_buffers(drive, pc, bcount);
|
|
}
|
|
/* Update the current position */
|
|
pc->actually_transferred += bcount;
|
|
pc->current_position += bcount;
|
|
|
|
BUG_ON(HWGROUP(drive)->handler != NULL);
|
|
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;
|
|
u8 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 = drive->hwif->INB(IDE_IREASON_REG);
|
|
if ((ireason & CD) == 0 || (ireason & IO)) {
|
|
printk(KERN_ERR "ide-floppy: (IO,CoD) != (0,1) while "
|
|
"issuing a packet command\n");
|
|
return ide_do_reset(drive);
|
|
}
|
|
BUG_ON(HWGROUP(drive)->handler != NULL);
|
|
/* 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;
|
|
u8 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 = drive->hwif->INB(IDE_IREASON_REG);
|
|
if ((ireason & CD) == 0 || (ireason & 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.
|
|
*/
|
|
BUG_ON(HWGROUP(drive)->handler != NULL);
|
|
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;
|
|
ide_handler_t *pkt_xfer_routine;
|
|
u16 bcount;
|
|
u8 dma;
|
|
|
|
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 = min(pc->request_transfer, 63 * 1024);
|
|
|
|
if (test_and_clear_bit(PC_DMA_ERROR, &pc->flags))
|
|
ide_dma_off(drive);
|
|
|
|
dma = 0;
|
|
|
|
if (test_bit(PC_DMA_RECOMMENDED, &pc->flags) && drive->using_dma)
|
|
dma = !hwif->dma_setup(drive);
|
|
|
|
ide_pktcmd_tf_load(drive, IDE_TFLAG_NO_SELECT_MASK |
|
|
IDE_TFLAG_OUT_DEVICE, bcount, dma);
|
|
|
|
if (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->cmd_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 void
|
|
idefloppy_blockpc_cmd(idefloppy_floppy_t *floppy, idefloppy_pc_t *pc, struct request *rq)
|
|
{
|
|
idefloppy_init_pc(pc);
|
|
pc->callback = &idefloppy_rw_callback;
|
|
memcpy(pc->c, rq->cmd, sizeof(pc->c));
|
|
pc->rq = rq;
|
|
pc->b_count = rq->data_len;
|
|
if (rq->data_len && rq_data_dir(rq) == WRITE)
|
|
set_bit(PC_WRITING, &pc->flags);
|
|
pc->buffer = rq->data;
|
|
if (rq->bio)
|
|
set_bit(PC_DMA_RECOMMENDED, &pc->flags);
|
|
|
|
/*
|
|
* possibly problematic, doesn't look like ide-floppy correctly
|
|
* handled scattered requests if dma fails...
|
|
*/
|
|
pc->request_transfer = pc->buffer_size = rq->data_len;
|
|
}
|
|
|
|
/*
|
|
* 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 "dev: %s, flags: %lx, errors: %d\n",
|
|
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 (blk_fs_request(rq)) {
|
|
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 (blk_special_request(rq)) {
|
|
pc = (idefloppy_pc_t *) rq->buffer;
|
|
} else if (blk_pc_request(rq)) {
|
|
pc = idefloppy_next_pc_storage(drive);
|
|
idefloppy_blockpc_cmd(floppy, pc, rq);
|
|
} 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.cmd_type = REQ_TYPE_SPECIAL;
|
|
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 = 0;
|
|
floppy->bs_factor = 1;
|
|
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 progress
|
|
** 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 {
|
|
unsigned long flags;
|
|
u8 stat;
|
|
|
|
local_irq_save(flags);
|
|
stat = drive->hwif->INB(IDE_STATUS_REG);
|
|
local_irq_restore(flags);
|
|
|
|
progress_indication = ((stat & SEEK_STAT) == 0) ? 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;
|
|
}
|
|
|
|
#ifdef CONFIG_IDE_PROC_FS
|
|
static void idefloppy_add_settings(ide_drive_t *drive)
|
|
{
|
|
idefloppy_floppy_t *floppy = drive->driver_data;
|
|
|
|
/*
|
|
* drive setting name read/write data type min max mul_factor div_factor data pointer set function
|
|
*/
|
|
ide_add_setting(drive, "bios_cyl", SETTING_RW, TYPE_INT, 0, 1023, 1, 1, &drive->bios_cyl, NULL);
|
|
ide_add_setting(drive, "bios_head", SETTING_RW, TYPE_BYTE, 0, 255, 1, 1, &drive->bios_head, NULL);
|
|
ide_add_setting(drive, "bios_sect", SETTING_RW, TYPE_BYTE, 0, 63, 1, 1, &drive->bios_sect, NULL);
|
|
ide_add_setting(drive, "ticks", SETTING_RW, TYPE_BYTE, 0, 255, 1, 1, &floppy->ticks, NULL);
|
|
}
|
|
#else
|
|
static inline void idefloppy_add_settings(ide_drive_t *drive) { ; }
|
|
#endif
|
|
|
|
/*
|
|
* 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 void ide_floppy_remove(ide_drive_t *drive)
|
|
{
|
|
idefloppy_floppy_t *floppy = drive->driver_data;
|
|
struct gendisk *g = floppy->disk;
|
|
|
|
ide_proc_unregister_driver(drive, floppy->driver);
|
|
|
|
del_gendisk(g);
|
|
|
|
ide_floppy_put(floppy);
|
|
}
|
|
|
|
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_IDE_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 }
|
|
};
|
|
#endif /* CONFIG_IDE_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,
|
|
#ifdef CONFIG_IDE_PROC_FS
|
|
.proc = idefloppy_proc,
|
|
#endif
|
|
};
|
|
|
|
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;
|
|
|
|
floppy->openers++;
|
|
|
|
if (floppy->openers == 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
|
|
*/
|
|
) {
|
|
ret = -EIO;
|
|
goto out_put_floppy;
|
|
}
|
|
|
|
if (floppy->wp && (filp->f_mode & 2)) {
|
|
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)) {
|
|
ret = -EBUSY;
|
|
goto out_put_floppy;
|
|
}
|
|
return 0;
|
|
|
|
out_put_floppy:
|
|
floppy->openers--;
|
|
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 (floppy->openers == 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);
|
|
}
|
|
|
|
floppy->openers--;
|
|
|
|
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 (floppy->openers > 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 (floppy->openers > 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);
|
|
}
|
|
|
|
/*
|
|
* skip SCSI_IOCTL_SEND_COMMAND (deprecated)
|
|
* and CDROM_SEND_PACKET (legacy) ioctls
|
|
*/
|
|
if (cmd != CDROM_SEND_PACKET && cmd != SCSI_IOCTL_SEND_COMMAND)
|
|
err = scsi_cmd_ioctl(file, bdev->bd_disk->queue,
|
|
bdev->bd_disk, cmd, argp);
|
|
else
|
|
err = -ENOTTY;
|
|
|
|
if (err == -ENOTTY)
|
|
err = generic_ide_ioctl(drive, file, bdev, cmd, arg);
|
|
|
|
return err;
|
|
}
|
|
|
|
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
|
|
};
|
|
|
|
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 = 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_proc_register_driver(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;
|
|
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");
|