+++ /dev/null
-/*
- * u14-34f.c - Low-level driver for UltraStor 14F/34F SCSI host adapters.
- *
- * 03 Jun 2003 Rev. 8.10 for linux-2.5.70
- * + Update for new IRQ API.
- * + Use "goto" when appropriate.
- * + Drop u14-34f.h.
- * + Update for new module_param API.
- * + Module parameters can now be specified only in the
- * same format as the kernel boot options.
- *
- * boot option old module param
- * ----------- ------------------
- * addr,... io_port=addr,...
- * lc:[y|n] linked_comm=[1|0]
- * mq:xx max_queue_depth=xx
- * tm:[0|1|2] tag_mode=[0|1|2]
- * et:[y|n] ext_tran=[1|0]
- * of:[y|n] have_old_firmware=[1|0]
- *
- * A valid example using the new parameter format is:
- * modprobe u14-34f "u14-34f=0x340,0x330,lc:y,tm:0,mq:4"
- *
- * which is equivalent to the old format:
- * modprobe u14-34f io_port=0x340,0x330 linked_comm=1 tag_mode=0 \
- * max_queue_depth=4
- *
- * With actual module code, u14-34f and u14_34f are equivalent
- * as module parameter names.
- *
- * 12 Feb 2003 Rev. 8.04 for linux 2.5.60
- * + Release irq before calling scsi_register.
- *
- * 12 Nov 2002 Rev. 8.02 for linux 2.5.47
- * + Release driver_lock before calling scsi_register.
- *
- * 11 Nov 2002 Rev. 8.01 for linux 2.5.47
- * + Fixed bios_param and scsicam_bios_param calling parameters.
- *
- * 28 Oct 2002 Rev. 8.00 for linux 2.5.44-ac4
- * + Use new tcq and adjust_queue_depth api.
- * + New command line option (tm:[0-2]) to choose the type of tags:
- * 0 -> disable tagging ; 1 -> simple tags ; 2 -> ordered tags.
- * Default is tm:0 (tagged commands disabled).
- * For compatibility the "tc:" option is an alias of the "tm:"
- * option; tc:n is equivalent to tm:0 and tc:y is equivalent to
- * tm:1.
- *
- * 10 Oct 2002 Rev. 7.70 for linux 2.5.42
- * + Foreport from revision 6.70.
- *
- * 25 Jun 2002 Rev. 6.70 for linux 2.4.19
- * + Fixed endian-ness problem due to bitfields.
- *
- * 21 Feb 2002 Rev. 6.52 for linux 2.4.18
- * + Backport from rev. 7.22 (use io_request_lock).
- *
- * 20 Feb 2002 Rev. 7.22 for linux 2.5.5
- * + Remove any reference to virt_to_bus().
- * + Fix pio hang while detecting multiple HBAs.
- *
- * 01 Jan 2002 Rev. 7.20 for linux 2.5.1
- * + Use the dynamic DMA mapping API.
- *
- * 19 Dec 2001 Rev. 7.02 for linux 2.5.1
- * + Use SCpnt->sc_data_direction if set.
- * + Use sglist.page instead of sglist.address.
- *
- * 11 Dec 2001 Rev. 7.00 for linux 2.5.1
- * + Use host->host_lock instead of io_request_lock.
- *
- * 1 May 2001 Rev. 6.05 for linux 2.4.4
- * + Fix data transfer direction for opcode SEND_CUE_SHEET (0x5d)
- *
- * 25 Jan 2001 Rev. 6.03 for linux 2.4.0
- * + "check_region" call replaced by "request_region".
- *
- * 22 Nov 2000 Rev. 6.02 for linux 2.4.0-test11
- * + Removed old scsi error handling support.
- * + The obsolete boot option flag eh:n is silently ignored.
- * + Removed error messages while a disk drive is powered up at
- * boot time.
- * + Improved boot messages: all tagged capable device are
- * indicated as "tagged".
- *
- * 16 Sep 1999 Rev. 5.11 for linux 2.2.12 and 2.3.18
- * + Updated to the new __setup interface for boot command line options.
- * + When loaded as a module, accepts the new parameter boot_options
- * which value is a string with the same format of the kernel boot
- * command line options. A valid example is:
- * modprobe u14-34f 'boot_options="0x230,0x340,lc:y,mq:4"'
- *
- * 22 Jul 1999 Rev. 5.00 for linux 2.2.10 and 2.3.11
- * + Removed pre-2.2 source code compatibility.
- *
- * 26 Jul 1998 Rev. 4.33 for linux 2.0.35 and 2.1.111
- * Added command line option (et:[y|n]) to use the existing
- * translation (returned by scsicam_bios_param) as disk geometry.
- * The default is et:n, which uses the disk geometry jumpered
- * on the board.
- * The default value et:n is compatible with all previous revisions
- * of this driver.
- *
- * 28 May 1998 Rev. 4.32 for linux 2.0.33 and 2.1.104
- * Increased busy timeout from 10 msec. to 200 msec. while
- * processing interrupts.
- *
- * 18 May 1998 Rev. 4.31 for linux 2.0.33 and 2.1.102
- * Improved abort handling during the eh recovery process.
- *
- * 13 May 1998 Rev. 4.30 for linux 2.0.33 and 2.1.101
- * The driver is now fully SMP safe, including the
- * abort and reset routines.
- * Added command line options (eh:[y|n]) to choose between
- * new_eh_code and the old scsi code.
- * If linux version >= 2.1.101 the default is eh:y, while the eh
- * option is ignored for previous releases and the old scsi code
- * is used.
- *
- * 18 Apr 1998 Rev. 4.20 for linux 2.0.33 and 2.1.97
- * Reworked interrupt handler.
- *
- * 11 Apr 1998 rev. 4.05 for linux 2.0.33 and 2.1.95
- * Major reliability improvement: when a batch with overlapping
- * requests is detected, requests are queued one at a time
- * eliminating any possible board or drive reordering.
- *
- * 10 Apr 1998 rev. 4.04 for linux 2.0.33 and 2.1.95
- * Improved SMP support (if linux version >= 2.1.95).
- *
- * 9 Apr 1998 rev. 4.03 for linux 2.0.33 and 2.1.94
- * Performance improvement: when sequential i/o is detected,
- * always use direct sort instead of reverse sort.
- *
- * 4 Apr 1998 rev. 4.02 for linux 2.0.33 and 2.1.92
- * io_port is now unsigned long.
- *
- * 17 Mar 1998 rev. 4.01 for linux 2.0.33 and 2.1.88
- * Use new scsi error handling code (if linux version >= 2.1.88).
- * Use new interrupt code.
- *
- * 12 Sep 1997 rev. 3.11 for linux 2.0.30 and 2.1.55
- * Use of udelay inside the wait loops to avoid timeout
- * problems with fast cpus.
- * Removed check about useless calls to the interrupt service
- * routine (reported on SMP systems only).
- * At initialization time "sorted/unsorted" is displayed instead
- * of "linked/unlinked" to reinforce the fact that "linking" is
- * nothing but "elevator sorting" in the actual implementation.
- *
- * 17 May 1997 rev. 3.10 for linux 2.0.30 and 2.1.38
- * Use of serial_number_at_timeout in abort and reset processing.
- * Use of the __initfunc and __initdata macro in setup code.
- * Minor cleanups in the list_statistics code.
- *
- * 24 Feb 1997 rev. 3.00 for linux 2.0.29 and 2.1.26
- * When loading as a module, parameter passing is now supported
- * both in 2.0 and in 2.1 style.
- * Fixed data transfer direction for some SCSI opcodes.
- * Immediate acknowledge to request sense commands.
- * Linked commands to each disk device are now reordered by elevator
- * sorting. Rare cases in which reordering of write requests could
- * cause wrong results are managed.
- *
- * 18 Jan 1997 rev. 2.60 for linux 2.1.21 and 2.0.28
- * Added command line options to enable/disable linked commands
- * (lc:[y|n]), old firmware support (of:[y|n]) and to set the max
- * queue depth (mq:xx). Default is "u14-34f=lc:n,of:n,mq:8".
- * Improved command linking.
- *
- * 8 Jan 1997 rev. 2.50 for linux 2.1.20 and 2.0.27
- * Added linked command support.
- *
- * 3 Dec 1996 rev. 2.40 for linux 2.1.14 and 2.0.27
- * Added queue depth adjustment.
- *
- * 22 Nov 1996 rev. 2.30 for linux 2.1.12 and 2.0.26
- * The list of i/o ports to be probed can be overwritten by the
- * "u14-34f=port0,port1,...." boot command line option.
- * Scatter/gather lists are now allocated by a number of kmalloc
- * calls, in order to avoid the previous size limit of 64Kb.
- *
- * 16 Nov 1996 rev. 2.20 for linux 2.1.10 and 2.0.25
- * Added multichannel support.
- *
- * 27 Sep 1996 rev. 2.12 for linux 2.1.0
- * Portability cleanups (virtual/bus addressing, little/big endian
- * support).
- *
- * 09 Jul 1996 rev. 2.11 for linux 2.0.4
- * "Data over/under-run" no longer implies a redo on all targets.
- * Number of internal retries is now limited.
- *
- * 16 Apr 1996 rev. 2.10 for linux 1.3.90
- * New argument "reset_flags" to the reset routine.
- *
- * 21 Jul 1995 rev. 2.02 for linux 1.3.11
- * Fixed Data Transfer Direction for some SCSI commands.
- *
- * 13 Jun 1995 rev. 2.01 for linux 1.2.10
- * HAVE_OLD_UX4F_FIRMWARE should be defined for U34F boards when
- * the firmware prom is not the latest one (28008-006).
- *
- * 11 Mar 1995 rev. 2.00 for linux 1.2.0
- * Fixed a bug which prevented media change detection for removable
- * disk drives.
- *
- * 23 Feb 1995 rev. 1.18 for linux 1.1.94
- * Added a check for scsi_register returning NULL.
- *
- * 11 Feb 1995 rev. 1.17 for linux 1.1.91
- * U14F qualified to run with 32 sglists.
- * Now DEBUG_RESET is disabled by default.
- *
- * 9 Feb 1995 rev. 1.16 for linux 1.1.90
- * Use host->wish_block instead of host->block.
- *
- * 8 Feb 1995 rev. 1.15 for linux 1.1.89
- * Cleared target_time_out counter while performing a reset.
- *
- * 28 Jan 1995 rev. 1.14 for linux 1.1.86
- * Added module support.
- * Log and do a retry when a disk drive returns a target status
- * different from zero on a recovered error.
- * Auto detects if U14F boards have an old firmware revision.
- * Max number of scatter/gather lists set to 16 for all boards
- * (most installation run fine using 33 sglists, while other
- * has problems when using more than 16).
- *
- * 16 Jan 1995 rev. 1.13 for linux 1.1.81
- * Display a message if check_region detects a port address
- * already in use.
- *
- * 15 Dec 1994 rev. 1.12 for linux 1.1.74
- * The host->block flag is set for all the detected ISA boards.
- *
- * 30 Nov 1994 rev. 1.11 for linux 1.1.68
- * Redo i/o on target status CHECK_CONDITION for TYPE_DISK only.
- * Added optional support for using a single board at a time.
- *
- * 14 Nov 1994 rev. 1.10 for linux 1.1.63
- *
- * 28 Oct 1994 rev. 1.09 for linux 1.1.58 Final BETA release.
- * 16 Jul 1994 rev. 1.00 for linux 1.1.29 Initial ALPHA release.
- *
- * This driver is a total replacement of the original UltraStor
- * scsi driver, but it supports ONLY the 14F and 34F boards.
- * It can be configured in the same kernel in which the original
- * ultrastor driver is configured to allow the original U24F
- * support.
- *
- * Multiple U14F and/or U34F host adapters are supported.
- *
- * Copyright (C) 1994-2003 Dario Ballabio (ballabio_dario@emc.com)
- *
- * Alternate email: dario.ballabio@inwind.it, dario.ballabio@tiscalinet.it
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that redistributions of source
- * code retain the above copyright notice and this comment without
- * modification.
- *
- * WARNING: if your 14/34F board has an old firmware revision (see below)
- * you must change "#undef" into "#define" in the following
- * statement.
- */
-#undef HAVE_OLD_UX4F_FIRMWARE
-/*
- * The UltraStor 14F, 24F, and 34F are a family of intelligent, high
- * performance SCSI-2 host adapters.
- * Here is the scoop on the various models:
- *
- * 14F - ISA first-party DMA HA with floppy support and WD1003 emulation.
- * 24F - EISA Bus Master HA with floppy support and WD1003 emulation.
- * 34F - VESA Local-Bus Bus Master HA (no WD1003 emulation).
- *
- * This code has been tested with up to two U14F boards, using both
- * firmware 28004-005/38004-004 (BIOS rev. 2.00) and the latest firmware
- * 28004-006/38004-005 (BIOS rev. 2.01).
- *
- * The latest firmware is required in order to get reliable operations when
- * clustering is enabled. ENABLE_CLUSTERING provides a performance increase
- * up to 50% on sequential access.
- *
- * Since the struct scsi_host_template structure is shared among all 14F and 34F,
- * the last setting of use_clustering is in effect for all of these boards.
- *
- * Here a sample configuration using two U14F boards:
- *
- U14F0: ISA 0x330, BIOS 0xc8000, IRQ 11, DMA 5, SG 32, MB 16, of:n, lc:y, mq:8.
- U14F1: ISA 0x340, BIOS 0x00000, IRQ 10, DMA 6, SG 32, MB 16, of:n, lc:y, mq:8.
- *
- * The boot controller must have its BIOS enabled, while other boards can
- * have their BIOS disabled, or enabled to an higher address.
- * Boards are named Ux4F0, Ux4F1..., according to the port address order in
- * the io_port[] array.
- *
- * The following facts are based on real testing results (not on
- * documentation) on the above U14F board.
- *
- * - The U14F board should be jumpered for bus on time less or equal to 7
- * microseconds, while the default is 11 microseconds. This is order to
- * get acceptable performance while using floppy drive and hard disk
- * together. The jumpering for 7 microseconds is: JP13 pin 15-16,
- * JP14 pin 7-8 and pin 9-10.
- * The reduction has a little impact on scsi performance.
- *
- * - If scsi bus length exceeds 3m., the scsi bus speed needs to be reduced
- * from 10Mhz to 5Mhz (do this by inserting a jumper on JP13 pin 7-8).
- *
- * - If U14F on board firmware is older than 28004-006/38004-005,
- * the U14F board is unable to provide reliable operations if the scsi
- * request length exceeds 16Kbyte. When this length is exceeded the
- * behavior is:
- * - adapter_status equal 0x96 or 0xa3 or 0x93 or 0x94;
- * - adapter_status equal 0 and target_status equal 2 on for all targets
- * in the next operation following the reset.
- * This sequence takes a long time (>3 seconds), so in the meantime
- * the SD_TIMEOUT in sd.c could expire giving rise to scsi aborts
- * (SD_TIMEOUT has been increased from 3 to 6 seconds in 1.1.31).
- * Because of this I had to DISABLE_CLUSTERING and to work around the
- * bus reset in the interrupt service routine, returning DID_BUS_BUSY
- * so that the operations are retried without complains from the scsi.c
- * code.
- * Any reset of the scsi bus is going to kill tape operations, since
- * no retry is allowed for tapes. Bus resets are more likely when the
- * scsi bus is under heavy load.
- * Requests using scatter/gather have a maximum length of 16 x 1024 bytes
- * when DISABLE_CLUSTERING is in effect, but unscattered requests could be
- * larger than 16Kbyte.
- *
- * The new firmware has fixed all the above problems.
- *
- * For U34F boards the latest bios prom is 38008-002 (BIOS rev. 2.01),
- * the latest firmware prom is 28008-006. Older firmware 28008-005 has
- * problems when using more than 16 scatter/gather lists.
- *
- * The list of i/o ports to be probed can be totally replaced by the
- * boot command line option: "u14-34f=port0,port1,port2,...", where the
- * port0, port1... arguments are ISA/VESA addresses to be probed.
- * For example using "u14-34f=0x230,0x340", the driver probes only the two
- * addresses 0x230 and 0x340 in this order; "u14-34f=0" totally disables
- * this driver.
- *
- * After the optional list of detection probes, other possible command line
- * options are:
- *
- * et:y use disk geometry returned by scsicam_bios_param;
- * et:n use disk geometry jumpered on the board;
- * lc:y enables linked commands;
- * lc:n disables linked commands;
- * tm:0 disables tagged commands (same as tc:n);
- * tm:1 use simple queue tags (same as tc:y);
- * tm:2 use ordered queue tags (same as tc:2);
- * of:y enables old firmware support;
- * of:n disables old firmware support;
- * mq:xx set the max queue depth to the value xx (2 <= xx <= 8).
- *
- * The default value is: "u14-34f=lc:n,of:n,mq:8,tm:0,et:n".
- * An example using the list of detection probes could be:
- * "u14-34f=0x230,0x340,lc:y,tm:2,of:n,mq:4,et:n".
- *
- * When loading as a module, parameters can be specified as well.
- * The above example would be (use 1 in place of y and 0 in place of n):
- *
- * modprobe u14-34f io_port=0x230,0x340 linked_comm=1 have_old_firmware=0 \
- * max_queue_depth=4 ext_tran=0 tag_mode=2
- *
- * ----------------------------------------------------------------------------
- * In this implementation, linked commands are designed to work with any DISK
- * or CD-ROM, since this linking has only the intent of clustering (time-wise)
- * and reordering by elevator sorting commands directed to each device,
- * without any relation with the actual SCSI protocol between the controller
- * and the device.
- * If Q is the queue depth reported at boot time for each device (also named
- * cmds/lun) and Q > 2, whenever there is already an active command to the
- * device all other commands to the same device (up to Q-1) are kept waiting
- * in the elevator sorting queue. When the active command completes, the
- * commands in this queue are sorted by sector address. The sort is chosen
- * between increasing or decreasing by minimizing the seek distance between
- * the sector of the commands just completed and the sector of the first
- * command in the list to be sorted.
- * Trivial math assures that the unsorted average seek distance when doing
- * random seeks over S sectors is S/3.
- * When (Q-1) requests are uniformly distributed over S sectors, the average
- * distance between two adjacent requests is S/((Q-1) + 1), so the sorted
- * average seek distance for (Q-1) random requests over S sectors is S/Q.
- * The elevator sorting hence divides the seek distance by a factor Q/3.
- * The above pure geometric remarks are valid in all cases and the
- * driver effectively reduces the seek distance by the predicted factor
- * when there are Q concurrent read i/o operations on the device, but this
- * does not necessarily results in a noticeable performance improvement:
- * your mileage may vary....
- *
- * Note: command reordering inside a batch of queued commands could cause
- * wrong results only if there is at least one write request and the
- * intersection (sector-wise) of all requests is not empty.
- * When the driver detects a batch including overlapping requests
- * (a really rare event) strict serial (pid) order is enforced.
- * ----------------------------------------------------------------------------
- *
- * The boards are named Ux4F0, Ux4F1,... according to the detection order.
- *
- * In order to support multiple ISA boards in a reliable way,
- * the driver sets host->wish_block = TRUE for all ISA boards.
- */
-
-#include <linux/string.h>
-#include <linux/kernel.h>
-#include <linux/ioport.h>
-#include <linux/delay.h>
-#include <asm/io.h>
-#include <asm/byteorder.h>
-#include <linux/proc_fs.h>
-#include <linux/blkdev.h>
-#include <linux/interrupt.h>
-#include <linux/stat.h>
-#include <linux/pci.h>
-#include <linux/init.h>
-#include <linux/ctype.h>
-#include <linux/spinlock.h>
-#include <linux/slab.h>
-#include <asm/dma.h>
-#include <asm/irq.h>
-
-#include <scsi/scsi.h>
-#include <scsi/scsi_cmnd.h>
-#include <scsi/scsi_device.h>
-#include <scsi/scsi_host.h>
-#include <scsi/scsi_tcq.h>
-#include <scsi/scsicam.h>
-
-static int u14_34f_detect(struct scsi_host_template *);
-static int u14_34f_release(struct Scsi_Host *);
-static int u14_34f_queuecommand(struct Scsi_Host *, struct scsi_cmnd *);
-static int u14_34f_eh_abort(struct scsi_cmnd *);
-static int u14_34f_eh_host_reset(struct scsi_cmnd *);
-static int u14_34f_bios_param(struct scsi_device *, struct block_device *,
- sector_t, int *);
-static int u14_34f_slave_configure(struct scsi_device *);
-
-static struct scsi_host_template driver_template = {
- .name = "UltraStor 14F/34F rev. 8.10.00 ",
- .detect = u14_34f_detect,
- .release = u14_34f_release,
- .queuecommand = u14_34f_queuecommand,
- .eh_abort_handler = u14_34f_eh_abort,
- .eh_host_reset_handler = u14_34f_eh_host_reset,
- .bios_param = u14_34f_bios_param,
- .slave_configure = u14_34f_slave_configure,
- .this_id = 7,
- .unchecked_isa_dma = 1,
- .use_clustering = ENABLE_CLUSTERING,
- };
-
-#if !defined(__BIG_ENDIAN_BITFIELD) && !defined(__LITTLE_ENDIAN_BITFIELD)
-#error "Adjust your <asm/byteorder.h> defines"
-#endif
-
-/* Values for the PRODUCT_ID ports for the 14/34F */
-#define PRODUCT_ID1 0x56
-#define PRODUCT_ID2 0x40 /* NOTE: Only upper nibble is used */
-
-/* Subversion values */
-#define ISA 0
-#define ESA 1
-
-#define OP_HOST_ADAPTER 0x1
-#define OP_SCSI 0x2
-#define OP_RESET 0x4
-#define DTD_SCSI 0x0
-#define DTD_IN 0x1
-#define DTD_OUT 0x2
-#define DTD_NONE 0x3
-#define HA_CMD_INQUIRY 0x1
-#define HA_CMD_SELF_DIAG 0x2
-#define HA_CMD_READ_BUFF 0x3
-#define HA_CMD_WRITE_BUFF 0x4
-
-#undef DEBUG_LINKED_COMMANDS
-#undef DEBUG_DETECT
-#undef DEBUG_INTERRUPT
-#undef DEBUG_RESET
-#undef DEBUG_GENERATE_ERRORS
-#undef DEBUG_GENERATE_ABORTS
-#undef DEBUG_GEOMETRY
-
-#define MAX_ISA 3
-#define MAX_VESA 1
-#define MAX_EISA 0
-#define MAX_PCI 0
-#define MAX_BOARDS (MAX_ISA + MAX_VESA + MAX_EISA + MAX_PCI)
-#define MAX_CHANNEL 1
-#define MAX_LUN 8
-#define MAX_TARGET 8
-#define MAX_MAILBOXES 16
-#define MAX_SGLIST 32
-#define MAX_SAFE_SGLIST 16
-#define MAX_INTERNAL_RETRIES 64
-#define MAX_CMD_PER_LUN 2
-#define MAX_TAGGED_CMD_PER_LUN (MAX_MAILBOXES - MAX_CMD_PER_LUN)
-
-#define SKIP ULONG_MAX
-#define FALSE 0
-#define TRUE 1
-#define FREE 0
-#define IN_USE 1
-#define LOCKED 2
-#define IN_RESET 3
-#define IGNORE 4
-#define READY 5
-#define ABORTING 6
-#define NO_DMA 0xff
-#define MAXLOOP 10000
-#define TAG_DISABLED 0
-#define TAG_SIMPLE 1
-#define TAG_ORDERED 2
-
-#define REG_LCL_MASK 0
-#define REG_LCL_INTR 1
-#define REG_SYS_MASK 2
-#define REG_SYS_INTR 3
-#define REG_PRODUCT_ID1 4
-#define REG_PRODUCT_ID2 5
-#define REG_CONFIG1 6
-#define REG_CONFIG2 7
-#define REG_OGM 8
-#define REG_ICM 12
-#define REGION_SIZE 13UL
-#define BSY_ASSERTED 0x01
-#define IRQ_ASSERTED 0x01
-#define CMD_RESET 0xc0
-#define CMD_OGM_INTR 0x01
-#define CMD_CLR_INTR 0x01
-#define CMD_ENA_INTR 0x81
-#define ASOK 0x00
-#define ASST 0x91
-
-#define YESNO(a) ((a) ? 'y' : 'n')
-#define TLDEV(type) ((type) == TYPE_DISK || (type) == TYPE_ROM)
-
-#define PACKED __attribute__((packed))
-
-struct sg_list {
- unsigned int address; /* Segment Address */
- unsigned int num_bytes; /* Segment Length */
- };
-
-/* MailBox SCSI Command Packet */
-struct mscp {
-
-#if defined(__BIG_ENDIAN_BITFIELD)
- unsigned char sg:1, ca:1, dcn:1, xdir:2, opcode:3;
- unsigned char lun: 3, channel:2, target:3;
-#else
- unsigned char opcode: 3, /* type of command */
- xdir: 2, /* data transfer direction */
- dcn: 1, /* disable disconnect */
- ca: 1, /* use cache (if available) */
- sg: 1; /* scatter/gather operation */
- unsigned char target: 3, /* SCSI target id */
- channel: 2, /* SCSI channel number */
- lun: 3; /* SCSI logical unit number */
-#endif
-
- unsigned int data_address PACKED; /* transfer data pointer */
- unsigned int data_len PACKED; /* length in bytes */
- unsigned int link_address PACKED; /* for linking command chains */
- unsigned char clink_id; /* identifies command in chain */
- unsigned char use_sg; /* (if sg is set) 8 bytes per list */
- unsigned char sense_len;
- unsigned char cdb_len; /* 6, 10, or 12 */
- unsigned char cdb[12]; /* SCSI Command Descriptor Block */
- unsigned char adapter_status; /* non-zero indicates HA error */
- unsigned char target_status; /* non-zero indicates target error */
- unsigned int sense_addr PACKED;
-
- /* Additional fields begin here. */
- struct scsi_cmnd *SCpnt;
- unsigned int cpp_index; /* cp index */
-
- /* All the cp structure is zero filled by queuecommand except the
- following CP_TAIL_SIZE bytes, initialized by detect */
- dma_addr_t cp_dma_addr; /* dma handle for this cp structure */
- struct sg_list *sglist; /* pointer to the allocated SG list */
- };
-
-#define CP_TAIL_SIZE (sizeof(struct sglist *) + sizeof(dma_addr_t))
-
-struct hostdata {
- struct mscp cp[MAX_MAILBOXES]; /* Mailboxes for this board */
- unsigned int cp_stat[MAX_MAILBOXES]; /* FREE, IN_USE, LOCKED, IN_RESET */
- unsigned int last_cp_used; /* Index of last mailbox used */
- unsigned int iocount; /* Total i/o done for this board */
- int board_number; /* Number of this board */
- char board_name[16]; /* Name of this board */
- int in_reset; /* True if board is doing a reset */
- int target_to[MAX_TARGET][MAX_CHANNEL]; /* N. of timeout errors on target */
- int target_redo[MAX_TARGET][MAX_CHANNEL]; /* If TRUE redo i/o on target */
- unsigned int retries; /* Number of internal retries */
- unsigned long last_retried_pid; /* Pid of last retried command */
- unsigned char subversion; /* Bus type, either ISA or ESA */
- struct pci_dev *pdev; /* Always NULL */
- unsigned char heads;
- unsigned char sectors;
- char board_id[256]; /* data from INQUIRY on this board */
- };
-
-static struct Scsi_Host *sh[MAX_BOARDS + 1];
-static const char *driver_name = "Ux4F";
-static char sha[MAX_BOARDS];
-static DEFINE_SPINLOCK(driver_lock);
-
-/* Initialize num_boards so that ihdlr can work while detect is in progress */
-static unsigned int num_boards = MAX_BOARDS;
-
-static unsigned long io_port[] = {
-
- /* Space for MAX_INT_PARAM ports usable while loading as a module */
- SKIP, SKIP, SKIP, SKIP, SKIP, SKIP, SKIP, SKIP,
- SKIP, SKIP,
-
- /* Possible ISA/VESA ports */
- 0x330, 0x340, 0x230, 0x240, 0x210, 0x130, 0x140,
-
- /* End of list */
- 0x0
- };
-
-#define HD(board) ((struct hostdata *) &sh[board]->hostdata)
-#define BN(board) (HD(board)->board_name)
-
-/* Device is Little Endian */
-#define H2DEV(x) cpu_to_le32(x)
-#define DEV2H(x) le32_to_cpu(x)
-
-static irqreturn_t do_interrupt_handler(int, void *);
-static void flush_dev(struct scsi_device *, unsigned long, unsigned int, unsigned int);
-static int do_trace = FALSE;
-static int setup_done = FALSE;
-static int link_statistics;
-static int ext_tran = FALSE;
-
-#if defined(HAVE_OLD_UX4F_FIRMWARE)
-static int have_old_firmware = TRUE;
-#else
-static int have_old_firmware = FALSE;
-#endif
-
-#if defined(CONFIG_SCSI_U14_34F_TAGGED_QUEUE)
-static int tag_mode = TAG_SIMPLE;
-#else
-static int tag_mode = TAG_DISABLED;
-#endif
-
-#if defined(CONFIG_SCSI_U14_34F_LINKED_COMMANDS)
-static int linked_comm = TRUE;
-#else
-static int linked_comm = FALSE;
-#endif
-
-#if defined(CONFIG_SCSI_U14_34F_MAX_TAGS)
-static int max_queue_depth = CONFIG_SCSI_U14_34F_MAX_TAGS;
-#else
-static int max_queue_depth = MAX_CMD_PER_LUN;
-#endif
-
-#define MAX_INT_PARAM 10
-#define MAX_BOOT_OPTIONS_SIZE 256
-static char boot_options[MAX_BOOT_OPTIONS_SIZE];
-
-#if defined(MODULE)
-#include <linux/module.h>
-#include <linux/moduleparam.h>
-
-module_param_string(u14_34f, boot_options, MAX_BOOT_OPTIONS_SIZE, 0);
-MODULE_PARM_DESC(u14_34f, " equivalent to the \"u14-34f=...\" kernel boot " \
-"option." \
-" Example: modprobe u14-34f \"u14_34f=0x340,0x330,lc:y,tm:0,mq:4\"");
-MODULE_AUTHOR("Dario Ballabio");
-MODULE_LICENSE("GPL");
-MODULE_DESCRIPTION("UltraStor 14F/34F SCSI Driver");
-
-#endif
-
-static int u14_34f_slave_configure(struct scsi_device *dev) {
- int j, tqd, utqd;
- char *tag_suffix, *link_suffix;
- struct Scsi_Host *host = dev->host;
-
- j = ((struct hostdata *) host->hostdata)->board_number;
-
- utqd = MAX_CMD_PER_LUN;
- tqd = max_queue_depth;
-
- if (TLDEV(dev->type) && dev->tagged_supported)
-
- if (tag_mode == TAG_SIMPLE) {
- scsi_change_queue_depth(dev, tqd);
- tag_suffix = ", simple tags";
- }
- else if (tag_mode == TAG_ORDERED) {
- scsi_change_queue_depth(dev, tqd);
- tag_suffix = ", ordered tags";
- }
- else {
- scsi_change_queue_depth(dev, tqd);
- tag_suffix = ", no tags";
- }
-
- else if (TLDEV(dev->type) && linked_comm) {
- scsi_change_queue_depth(dev, tqd);
- tag_suffix = ", untagged";
- }
-
- else {
- scsi_change_queue_depth(dev, utqd);
- tag_suffix = "";
- }
-
- if (TLDEV(dev->type) && linked_comm && dev->queue_depth > 2)
- link_suffix = ", sorted";
- else if (TLDEV(dev->type))
- link_suffix = ", unsorted";
- else
- link_suffix = "";
-
- sdev_printk(KERN_INFO, dev, "cmds/lun %d%s%s.\n",
- dev->queue_depth, link_suffix, tag_suffix);
-
- return FALSE;
-}
-
-static int wait_on_busy(unsigned long iobase, unsigned int loop) {
-
- while (inb(iobase + REG_LCL_INTR) & BSY_ASSERTED) {
- udelay(1L);
- if (--loop == 0) return TRUE;
- }
-
- return FALSE;
-}
-
-static int board_inquiry(unsigned int j) {
- struct mscp *cpp;
- dma_addr_t id_dma_addr;
- unsigned int limit = 0;
- unsigned long time;
-
- id_dma_addr = pci_map_single(HD(j)->pdev, HD(j)->board_id,
- sizeof(HD(j)->board_id), PCI_DMA_BIDIRECTIONAL);
- cpp = &HD(j)->cp[0];
- cpp->cp_dma_addr = pci_map_single(HD(j)->pdev, cpp, sizeof(struct mscp),
- PCI_DMA_BIDIRECTIONAL);
- memset(cpp, 0, sizeof(struct mscp) - CP_TAIL_SIZE);
- cpp->opcode = OP_HOST_ADAPTER;
- cpp->xdir = DTD_IN;
- cpp->data_address = H2DEV(id_dma_addr);
- cpp->data_len = H2DEV(sizeof(HD(j)->board_id));
- cpp->cdb_len = 6;
- cpp->cdb[0] = HA_CMD_INQUIRY;
-
- if (wait_on_busy(sh[j]->io_port, MAXLOOP)) {
- printk("%s: board_inquiry, adapter busy.\n", BN(j));
- return TRUE;
- }
-
- HD(j)->cp_stat[0] = IGNORE;
-
- /* Clear the interrupt indication */
- outb(CMD_CLR_INTR, sh[j]->io_port + REG_SYS_INTR);
-
- /* Store pointer in OGM address bytes */
- outl(H2DEV(cpp->cp_dma_addr), sh[j]->io_port + REG_OGM);
-
- /* Issue OGM interrupt */
- outb(CMD_OGM_INTR, sh[j]->io_port + REG_LCL_INTR);
-
- spin_unlock_irq(&driver_lock);
- time = jiffies;
- while ((jiffies - time) < HZ && limit++ < 20000) udelay(100L);
- spin_lock_irq(&driver_lock);
-
- if (cpp->adapter_status || HD(j)->cp_stat[0] != FREE) {
- HD(j)->cp_stat[0] = FREE;
- printk("%s: board_inquiry, err 0x%x.\n", BN(j), cpp->adapter_status);
- return TRUE;
- }
-
- pci_unmap_single(HD(j)->pdev, cpp->cp_dma_addr, sizeof(struct mscp),
- PCI_DMA_BIDIRECTIONAL);
- pci_unmap_single(HD(j)->pdev, id_dma_addr, sizeof(HD(j)->board_id),
- PCI_DMA_BIDIRECTIONAL);
- return FALSE;
-}
-
-static int port_detect \
- (unsigned long port_base, unsigned int j, struct scsi_host_template *tpnt) {
- unsigned char irq, dma_channel, subversion, i;
- unsigned char in_byte;
- char *bus_type, dma_name[16];
-
- /* Allowed BIOS base addresses (NULL indicates reserved) */
- unsigned long bios_segment_table[8] = {
- 0,
- 0xc4000, 0xc8000, 0xcc000, 0xd0000,
- 0xd4000, 0xd8000, 0xdc000
- };
-
- /* Allowed IRQs */
- unsigned char interrupt_table[4] = { 15, 14, 11, 10 };
-
- /* Allowed DMA channels for ISA (0 indicates reserved) */
- unsigned char dma_channel_table[4] = { 5, 6, 7, 0 };
-
- /* Head/sector mappings */
- struct {
- unsigned char heads;
- unsigned char sectors;
- } mapping_table[4] = {
- { 16, 63 }, { 64, 32 }, { 64, 63 }, { 64, 32 }
- };
-
- struct config_1 {
-
-#if defined(__BIG_ENDIAN_BITFIELD)
- unsigned char dma_channel: 2, interrupt:2,
- removable_disks_as_fixed:1, bios_segment: 3;
-#else
- unsigned char bios_segment: 3, removable_disks_as_fixed: 1,
- interrupt: 2, dma_channel: 2;
-#endif
-
- } config_1;
-
- struct config_2 {
-
-#if defined(__BIG_ENDIAN_BITFIELD)
- unsigned char tfr_port: 2, bios_drive_number: 1,
- mapping_mode: 2, ha_scsi_id: 3;
-#else
- unsigned char ha_scsi_id: 3, mapping_mode: 2,
- bios_drive_number: 1, tfr_port: 2;
-#endif
-
- } config_2;
-
- char name[16];
-
- sprintf(name, "%s%d", driver_name, j);
-
- if (!request_region(port_base, REGION_SIZE, driver_name)) {
-#if defined(DEBUG_DETECT)
- printk("%s: address 0x%03lx in use, skipping probe.\n", name, port_base);
-#endif
- goto fail;
- }
-
- spin_lock_irq(&driver_lock);
-
- if (inb(port_base + REG_PRODUCT_ID1) != PRODUCT_ID1) goto freelock;
-
- in_byte = inb(port_base + REG_PRODUCT_ID2);
-
- if ((in_byte & 0xf0) != PRODUCT_ID2) goto freelock;
-
- *(char *)&config_1 = inb(port_base + REG_CONFIG1);
- *(char *)&config_2 = inb(port_base + REG_CONFIG2);
-
- irq = interrupt_table[config_1.interrupt];
- dma_channel = dma_channel_table[config_1.dma_channel];
- subversion = (in_byte & 0x0f);
-
- /* Board detected, allocate its IRQ */
- if (request_irq(irq, do_interrupt_handler,
- (subversion == ESA) ? IRQF_SHARED : 0,
- driver_name, (void *) &sha[j])) {
- printk("%s: unable to allocate IRQ %u, detaching.\n", name, irq);
- goto freelock;
- }
-
- if (subversion == ISA && request_dma(dma_channel, driver_name)) {
- printk("%s: unable to allocate DMA channel %u, detaching.\n",
- name, dma_channel);
- goto freeirq;
- }
-
- if (have_old_firmware) tpnt->use_clustering = DISABLE_CLUSTERING;
-
- spin_unlock_irq(&driver_lock);
- sh[j] = scsi_register(tpnt, sizeof(struct hostdata));
- spin_lock_irq(&driver_lock);
-
- if (sh[j] == NULL) {
- printk("%s: unable to register host, detaching.\n", name);
- goto freedma;
- }
-
- sh[j]->io_port = port_base;
- sh[j]->unique_id = port_base;
- sh[j]->n_io_port = REGION_SIZE;
- sh[j]->base = bios_segment_table[config_1.bios_segment];
- sh[j]->irq = irq;
- sh[j]->sg_tablesize = MAX_SGLIST;
- sh[j]->this_id = config_2.ha_scsi_id;
- sh[j]->can_queue = MAX_MAILBOXES;
- sh[j]->cmd_per_lun = MAX_CMD_PER_LUN;
-
-#if defined(DEBUG_DETECT)
- {
- unsigned char sys_mask, lcl_mask;
-
- sys_mask = inb(sh[j]->io_port + REG_SYS_MASK);
- lcl_mask = inb(sh[j]->io_port + REG_LCL_MASK);
- printk("SYS_MASK 0x%x, LCL_MASK 0x%x.\n", sys_mask, lcl_mask);
- }
-#endif
-
- /* Probably a bogus host scsi id, set it to the dummy value */
- if (sh[j]->this_id == 0) sh[j]->this_id = -1;
-
- /* If BIOS is disabled, force enable interrupts */
- if (sh[j]->base == 0) outb(CMD_ENA_INTR, sh[j]->io_port + REG_SYS_MASK);
-
- memset(HD(j), 0, sizeof(struct hostdata));
- HD(j)->heads = mapping_table[config_2.mapping_mode].heads;
- HD(j)->sectors = mapping_table[config_2.mapping_mode].sectors;
- HD(j)->subversion = subversion;
- HD(j)->pdev = NULL;
- HD(j)->board_number = j;
-
- if (have_old_firmware) sh[j]->sg_tablesize = MAX_SAFE_SGLIST;
-
- if (HD(j)->subversion == ESA) {
- sh[j]->unchecked_isa_dma = FALSE;
- sh[j]->dma_channel = NO_DMA;
- sprintf(BN(j), "U34F%d", j);
- bus_type = "VESA";
- }
- else {
- unsigned long flags;
- sh[j]->unchecked_isa_dma = TRUE;
-
- flags=claim_dma_lock();
- disable_dma(dma_channel);
- clear_dma_ff(dma_channel);
- set_dma_mode(dma_channel, DMA_MODE_CASCADE);
- enable_dma(dma_channel);
- release_dma_lock(flags);
-
- sh[j]->dma_channel = dma_channel;
- sprintf(BN(j), "U14F%d", j);
- bus_type = "ISA";
- }
-
- sh[j]->max_channel = MAX_CHANNEL - 1;
- sh[j]->max_id = MAX_TARGET;
- sh[j]->max_lun = MAX_LUN;
-
- if (HD(j)->subversion == ISA && !board_inquiry(j)) {
- HD(j)->board_id[40] = 0;
-
- if (strcmp(&HD(j)->board_id[32], "06000600")) {
- printk("%s: %s.\n", BN(j), &HD(j)->board_id[8]);
- printk("%s: firmware %s is outdated, FW PROM should be 28004-006.\n",
- BN(j), &HD(j)->board_id[32]);
- sh[j]->hostt->use_clustering = DISABLE_CLUSTERING;
- sh[j]->sg_tablesize = MAX_SAFE_SGLIST;
- }
- }
-
- if (dma_channel == NO_DMA) sprintf(dma_name, "%s", "BMST");
- else sprintf(dma_name, "DMA %u", dma_channel);
-
- spin_unlock_irq(&driver_lock);
-
- for (i = 0; i < sh[j]->can_queue; i++)
- HD(j)->cp[i].cp_dma_addr = pci_map_single(HD(j)->pdev,
- &HD(j)->cp[i], sizeof(struct mscp), PCI_DMA_BIDIRECTIONAL);
-
- for (i = 0; i < sh[j]->can_queue; i++)
- if (! ((&HD(j)->cp[i])->sglist = kmalloc(
- sh[j]->sg_tablesize * sizeof(struct sg_list),
- (sh[j]->unchecked_isa_dma ? GFP_DMA : 0) | GFP_ATOMIC))) {
- printk("%s: kmalloc SGlist failed, mbox %d, detaching.\n", BN(j), i);
- goto release;
- }
-
- if (max_queue_depth > MAX_TAGGED_CMD_PER_LUN)
- max_queue_depth = MAX_TAGGED_CMD_PER_LUN;
-
- if (max_queue_depth < MAX_CMD_PER_LUN) max_queue_depth = MAX_CMD_PER_LUN;
-
- if (tag_mode != TAG_DISABLED && tag_mode != TAG_SIMPLE)
- tag_mode = TAG_ORDERED;
-
- if (j == 0) {
- printk("UltraStor 14F/34F: Copyright (C) 1994-2003 Dario Ballabio.\n");
- printk("%s config options -> of:%c, tm:%d, lc:%c, mq:%d, et:%c.\n",
- driver_name, YESNO(have_old_firmware), tag_mode,
- YESNO(linked_comm), max_queue_depth, YESNO(ext_tran));
- }
-
- printk("%s: %s 0x%03lx, BIOS 0x%05x, IRQ %u, %s, SG %d, MB %d.\n",
- BN(j), bus_type, (unsigned long)sh[j]->io_port, (int)sh[j]->base,
- sh[j]->irq, dma_name, sh[j]->sg_tablesize, sh[j]->can_queue);
-
- if (sh[j]->max_id > 8 || sh[j]->max_lun > 8)
- printk("%s: wide SCSI support enabled, max_id %u, max_lun %llu.\n",
- BN(j), sh[j]->max_id, sh[j]->max_lun);
-
- for (i = 0; i <= sh[j]->max_channel; i++)
- printk("%s: SCSI channel %u enabled, host target ID %d.\n",
- BN(j), i, sh[j]->this_id);
-
- return TRUE;
-
-freedma:
- if (subversion == ISA) free_dma(dma_channel);
-freeirq:
- free_irq(irq, &sha[j]);
-freelock:
- spin_unlock_irq(&driver_lock);
- release_region(port_base, REGION_SIZE);
-fail:
- return FALSE;
-
-release:
- u14_34f_release(sh[j]);
- return FALSE;
-}
-
-static void internal_setup(char *str, int *ints) {
- int i, argc = ints[0];
- char *cur = str, *pc;
-
- if (argc > 0) {
-
- if (argc > MAX_INT_PARAM) argc = MAX_INT_PARAM;
-
- for (i = 0; i < argc; i++) io_port[i] = ints[i + 1];
-
- io_port[i] = 0;
- setup_done = TRUE;
- }
-
- while (cur && (pc = strchr(cur, ':'))) {
- int val = 0, c = *++pc;
-
- if (c == 'n' || c == 'N') val = FALSE;
- else if (c == 'y' || c == 'Y') val = TRUE;
- else val = (int) simple_strtoul(pc, NULL, 0);
-
- if (!strncmp(cur, "lc:", 3)) linked_comm = val;
- else if (!strncmp(cur, "of:", 3)) have_old_firmware = val;
- else if (!strncmp(cur, "tm:", 3)) tag_mode = val;
- else if (!strncmp(cur, "tc:", 3)) tag_mode = val;
- else if (!strncmp(cur, "mq:", 3)) max_queue_depth = val;
- else if (!strncmp(cur, "ls:", 3)) link_statistics = val;
- else if (!strncmp(cur, "et:", 3)) ext_tran = val;
-
- if ((cur = strchr(cur, ','))) ++cur;
- }
-
- return;
-}
-
-static int option_setup(char *str) {
- int ints[MAX_INT_PARAM];
- char *cur = str;
- int i = 1;
-
- while (cur && isdigit(*cur) && i < MAX_INT_PARAM) {
- ints[i++] = simple_strtoul(cur, NULL, 0);
-
- if ((cur = strchr(cur, ',')) != NULL) cur++;
- }
-
- ints[0] = i - 1;
- internal_setup(cur, ints);
- return 1;
-}
-
-static int u14_34f_detect(struct scsi_host_template *tpnt) {
- unsigned int j = 0, k;
-
- tpnt->proc_name = "u14-34f";
-
- if(strlen(boot_options)) option_setup(boot_options);
-
-#if defined(MODULE)
- /* io_port could have been modified when loading as a module */
- if(io_port[0] != SKIP) {
- setup_done = TRUE;
- io_port[MAX_INT_PARAM] = 0;
- }
-#endif
-
- for (k = 0; k < MAX_BOARDS + 1; k++) sh[k] = NULL;
-
- for (k = 0; io_port[k]; k++) {
-
- if (io_port[k] == SKIP) continue;
-
- if (j < MAX_BOARDS && port_detect(io_port[k], j, tpnt)) j++;
- }
-
- num_boards = j;
- return j;
-}
-
-static void map_dma(unsigned int i, unsigned int j) {
- unsigned int data_len = 0;
- unsigned int k, pci_dir;
- int count;
- struct scatterlist *sg;
- struct mscp *cpp;
- struct scsi_cmnd *SCpnt;
-
- cpp = &HD(j)->cp[i]; SCpnt = cpp->SCpnt;
- pci_dir = SCpnt->sc_data_direction;
-
- if (SCpnt->sense_buffer)
- cpp->sense_addr = H2DEV(pci_map_single(HD(j)->pdev, SCpnt->sense_buffer,
- SCSI_SENSE_BUFFERSIZE, PCI_DMA_FROMDEVICE));
-
- cpp->sense_len = SCSI_SENSE_BUFFERSIZE;
-
- if (scsi_bufflen(SCpnt)) {
- count = scsi_dma_map(SCpnt);
- BUG_ON(count < 0);
-
- scsi_for_each_sg(SCpnt, sg, count, k) {
- cpp->sglist[k].address = H2DEV(sg_dma_address(sg));
- cpp->sglist[k].num_bytes = H2DEV(sg_dma_len(sg));
- data_len += sg->length;
- }
-
- cpp->sg = TRUE;
- cpp->use_sg = scsi_sg_count(SCpnt);
- cpp->data_address =
- H2DEV(pci_map_single(HD(j)->pdev, cpp->sglist,
- cpp->use_sg * sizeof(struct sg_list),
- pci_dir));
- cpp->data_len = H2DEV(data_len);
-
- } else {
- pci_dir = PCI_DMA_BIDIRECTIONAL;
- cpp->data_len = H2DEV(scsi_bufflen(SCpnt));
- }
-}
-
-static void unmap_dma(unsigned int i, unsigned int j) {
- unsigned int pci_dir;
- struct mscp *cpp;
- struct scsi_cmnd *SCpnt;
-
- cpp = &HD(j)->cp[i]; SCpnt = cpp->SCpnt;
- pci_dir = SCpnt->sc_data_direction;
-
- if (DEV2H(cpp->sense_addr))
- pci_unmap_single(HD(j)->pdev, DEV2H(cpp->sense_addr),
- DEV2H(cpp->sense_len), PCI_DMA_FROMDEVICE);
-
- scsi_dma_unmap(SCpnt);
-
- if (!DEV2H(cpp->data_len)) pci_dir = PCI_DMA_BIDIRECTIONAL;
-
- if (DEV2H(cpp->data_address))
- pci_unmap_single(HD(j)->pdev, DEV2H(cpp->data_address),
- DEV2H(cpp->data_len), pci_dir);
-}
-
-static void sync_dma(unsigned int i, unsigned int j) {
- unsigned int pci_dir;
- struct mscp *cpp;
- struct scsi_cmnd *SCpnt;
-
- cpp = &HD(j)->cp[i]; SCpnt = cpp->SCpnt;
- pci_dir = SCpnt->sc_data_direction;
-
- if (DEV2H(cpp->sense_addr))
- pci_dma_sync_single_for_cpu(HD(j)->pdev, DEV2H(cpp->sense_addr),
- DEV2H(cpp->sense_len), PCI_DMA_FROMDEVICE);
-
- if (scsi_sg_count(SCpnt))
- pci_dma_sync_sg_for_cpu(HD(j)->pdev, scsi_sglist(SCpnt),
- scsi_sg_count(SCpnt), pci_dir);
-
- if (!DEV2H(cpp->data_len)) pci_dir = PCI_DMA_BIDIRECTIONAL;
-
- if (DEV2H(cpp->data_address))
- pci_dma_sync_single_for_cpu(HD(j)->pdev, DEV2H(cpp->data_address),
- DEV2H(cpp->data_len), pci_dir);
-}
-
-static void scsi_to_dev_dir(unsigned int i, unsigned int j) {
- unsigned int k;
-
- static const unsigned char data_out_cmds[] = {
- 0x0a, 0x2a, 0x15, 0x55, 0x04, 0x07, 0x18, 0x1d, 0x24, 0x2e,
- 0x30, 0x31, 0x32, 0x38, 0x39, 0x3a, 0x3b, 0x3d, 0x3f, 0x40,
- 0x41, 0x4c, 0xaa, 0xae, 0xb0, 0xb1, 0xb2, 0xb6, 0xea, 0x1b, 0x5d
- };
-
- static const unsigned char data_none_cmds[] = {
- 0x01, 0x0b, 0x10, 0x11, 0x13, 0x16, 0x17, 0x19, 0x2b, 0x1e,
- 0x2c, 0xac, 0x2f, 0xaf, 0x33, 0xb3, 0x35, 0x36, 0x45, 0x47,
- 0x48, 0x49, 0xa9, 0x4b, 0xa5, 0xa6, 0xb5, 0x00
- };
-
- struct mscp *cpp;
- struct scsi_cmnd *SCpnt;
-
- cpp = &HD(j)->cp[i]; SCpnt = cpp->SCpnt;
-
- if (SCpnt->sc_data_direction == DMA_FROM_DEVICE) {
- cpp->xdir = DTD_IN;
- return;
- }
- else if (SCpnt->sc_data_direction == DMA_TO_DEVICE) {
- cpp->xdir = DTD_OUT;
- return;
- }
- else if (SCpnt->sc_data_direction == DMA_NONE) {
- cpp->xdir = DTD_NONE;
- return;
- }
-
- if (SCpnt->sc_data_direction != DMA_BIDIRECTIONAL)
- panic("%s: qcomm, invalid SCpnt->sc_data_direction.\n", BN(j));
-
- cpp->xdir = DTD_IN;
-
- for (k = 0; k < ARRAY_SIZE(data_out_cmds); k++)
- if (SCpnt->cmnd[0] == data_out_cmds[k]) {
- cpp->xdir = DTD_OUT;
- break;
- }
-
- if (cpp->xdir == DTD_IN)
- for (k = 0; k < ARRAY_SIZE(data_none_cmds); k++)
- if (SCpnt->cmnd[0] == data_none_cmds[k]) {
- cpp->xdir = DTD_NONE;
- break;
- }
-
-}
-
-static int u14_34f_queuecommand_lck(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *)) {
- unsigned int i, j, k;
- struct mscp *cpp;
-
- /* j is the board number */
- j = ((struct hostdata *) SCpnt->device->host->hostdata)->board_number;
-
- if (SCpnt->host_scribble)
- panic("%s: qcomm, SCpnt %p already active.\n",
- BN(j), SCpnt);
-
- /* i is the mailbox number, look for the first free mailbox
- starting from last_cp_used */
- i = HD(j)->last_cp_used + 1;
-
- for (k = 0; k < sh[j]->can_queue; k++, i++) {
-
- if (i >= sh[j]->can_queue) i = 0;
-
- if (HD(j)->cp_stat[i] == FREE) {
- HD(j)->last_cp_used = i;
- break;
- }
- }
-
- if (k == sh[j]->can_queue) {
- printk("%s: qcomm, no free mailbox.\n", BN(j));
- return 1;
- }
-
- /* Set pointer to control packet structure */
- cpp = &HD(j)->cp[i];
-
- memset(cpp, 0, sizeof(struct mscp) - CP_TAIL_SIZE);
- SCpnt->scsi_done = done;
- cpp->cpp_index = i;
- SCpnt->host_scribble = (unsigned char *) &cpp->cpp_index;
-
- if (do_trace) printk("%s: qcomm, mbox %d, target %d.%d:%u.\n",
- BN(j), i, SCpnt->device->channel, SCpnt->device->id,
- (u8)SCpnt->device->lun);
-
- cpp->opcode = OP_SCSI;
- cpp->channel = SCpnt->device->channel;
- cpp->target = SCpnt->device->id;
- cpp->lun = (u8)SCpnt->device->lun;
- cpp->SCpnt = SCpnt;
- cpp->cdb_len = SCpnt->cmd_len;
- memcpy(cpp->cdb, SCpnt->cmnd, SCpnt->cmd_len);
-
- /* Use data transfer direction SCpnt->sc_data_direction */
- scsi_to_dev_dir(i, j);
-
- /* Map DMA buffers and SG list */
- map_dma(i, j);
-
- if (linked_comm && SCpnt->device->queue_depth > 2
- && TLDEV(SCpnt->device->type)) {
- HD(j)->cp_stat[i] = READY;
- flush_dev(SCpnt->device, blk_rq_pos(SCpnt->request), j, FALSE);
- return 0;
- }
-
- if (wait_on_busy(sh[j]->io_port, MAXLOOP)) {
- unmap_dma(i, j);
- SCpnt->host_scribble = NULL;
- scmd_printk(KERN_INFO, SCpnt,
- "qcomm, adapter busy.\n");
- return 1;
- }
-
- /* Store pointer in OGM address bytes */
- outl(H2DEV(cpp->cp_dma_addr), sh[j]->io_port + REG_OGM);
-
- /* Issue OGM interrupt */
- outb(CMD_OGM_INTR, sh[j]->io_port + REG_LCL_INTR);
-
- HD(j)->cp_stat[i] = IN_USE;
- return 0;
-}
-
-static DEF_SCSI_QCMD(u14_34f_queuecommand)
-
-static int u14_34f_eh_abort(struct scsi_cmnd *SCarg) {
- unsigned int i, j;
-
- j = ((struct hostdata *) SCarg->device->host->hostdata)->board_number;
-
- if (SCarg->host_scribble == NULL) {
- scmd_printk(KERN_INFO, SCarg, "abort, command inactive.\n");
- return SUCCESS;
- }
-
- i = *(unsigned int *)SCarg->host_scribble;
- scmd_printk(KERN_INFO, SCarg, "abort, mbox %d.\n", i);
-
- if (i >= sh[j]->can_queue)
- panic("%s: abort, invalid SCarg->host_scribble.\n", BN(j));
-
- if (wait_on_busy(sh[j]->io_port, MAXLOOP)) {
- printk("%s: abort, timeout error.\n", BN(j));
- return FAILED;
- }
-
- if (HD(j)->cp_stat[i] == FREE) {
- printk("%s: abort, mbox %d is free.\n", BN(j), i);
- return SUCCESS;
- }
-
- if (HD(j)->cp_stat[i] == IN_USE) {
- printk("%s: abort, mbox %d is in use.\n", BN(j), i);
-
- if (SCarg != HD(j)->cp[i].SCpnt)
- panic("%s: abort, mbox %d, SCarg %p, cp SCpnt %p.\n",
- BN(j), i, SCarg, HD(j)->cp[i].SCpnt);
-
- if (inb(sh[j]->io_port + REG_SYS_INTR) & IRQ_ASSERTED)
- printk("%s: abort, mbox %d, interrupt pending.\n", BN(j), i);
-
- return FAILED;
- }
-
- if (HD(j)->cp_stat[i] == IN_RESET) {
- printk("%s: abort, mbox %d is in reset.\n", BN(j), i);
- return FAILED;
- }
-
- if (HD(j)->cp_stat[i] == LOCKED) {
- printk("%s: abort, mbox %d is locked.\n", BN(j), i);
- return SUCCESS;
- }
-
- if (HD(j)->cp_stat[i] == READY || HD(j)->cp_stat[i] == ABORTING) {
- unmap_dma(i, j);
- SCarg->result = DID_ABORT << 16;
- SCarg->host_scribble = NULL;
- HD(j)->cp_stat[i] = FREE;
- printk("%s, abort, mbox %d ready, DID_ABORT, done.\n", BN(j), i);
- SCarg->scsi_done(SCarg);
- return SUCCESS;
- }
-
- panic("%s: abort, mbox %d, invalid cp_stat.\n", BN(j), i);
-}
-
-static int u14_34f_eh_host_reset(struct scsi_cmnd *SCarg) {
- unsigned int i, j, k, c, limit = 0;
- unsigned long time;
- int arg_done = FALSE;
- struct scsi_cmnd *SCpnt;
-
- j = ((struct hostdata *) SCarg->device->host->hostdata)->board_number;
- scmd_printk(KERN_INFO, SCarg, "reset, enter.\n");
-
- spin_lock_irq(sh[j]->host_lock);
-
- if (SCarg->host_scribble == NULL)
- printk("%s: reset, inactive.\n", BN(j));
-
- if (HD(j)->in_reset) {
- printk("%s: reset, exit, already in reset.\n", BN(j));
- spin_unlock_irq(sh[j]->host_lock);
- return FAILED;
- }
-
- if (wait_on_busy(sh[j]->io_port, MAXLOOP)) {
- printk("%s: reset, exit, timeout error.\n", BN(j));
- spin_unlock_irq(sh[j]->host_lock);
- return FAILED;
- }
-
- HD(j)->retries = 0;
-
- for (c = 0; c <= sh[j]->max_channel; c++)
- for (k = 0; k < sh[j]->max_id; k++) {
- HD(j)->target_redo[k][c] = TRUE;
- HD(j)->target_to[k][c] = 0;
- }
-
- for (i = 0; i < sh[j]->can_queue; i++) {
-
- if (HD(j)->cp_stat[i] == FREE) continue;
-
- if (HD(j)->cp_stat[i] == LOCKED) {
- HD(j)->cp_stat[i] = FREE;
- printk("%s: reset, locked mbox %d forced free.\n", BN(j), i);
- continue;
- }
-
- if (!(SCpnt = HD(j)->cp[i].SCpnt))
- panic("%s: reset, mbox %d, SCpnt == NULL.\n", BN(j), i);
-
- if (HD(j)->cp_stat[i] == READY || HD(j)->cp_stat[i] == ABORTING) {
- HD(j)->cp_stat[i] = ABORTING;
- printk("%s: reset, mbox %d aborting.\n", BN(j), i);
- }
-
- else {
- HD(j)->cp_stat[i] = IN_RESET;
- printk("%s: reset, mbox %d in reset.\n", BN(j), i);
- }
-
- if (SCpnt->host_scribble == NULL)
- panic("%s: reset, mbox %d, garbled SCpnt.\n", BN(j), i);
-
- if (*(unsigned int *)SCpnt->host_scribble != i)
- panic("%s: reset, mbox %d, index mismatch.\n", BN(j), i);
-
- if (SCpnt->scsi_done == NULL)
- panic("%s: reset, mbox %d, SCpnt->scsi_done == NULL.\n", BN(j), i);
-
- if (SCpnt == SCarg) arg_done = TRUE;
- }
-
- if (wait_on_busy(sh[j]->io_port, MAXLOOP)) {
- printk("%s: reset, cannot reset, timeout error.\n", BN(j));
- spin_unlock_irq(sh[j]->host_lock);
- return FAILED;
- }
-
- outb(CMD_RESET, sh[j]->io_port + REG_LCL_INTR);
- printk("%s: reset, board reset done, enabling interrupts.\n", BN(j));
-
-#if defined(DEBUG_RESET)
- do_trace = TRUE;
-#endif
-
- HD(j)->in_reset = TRUE;
-
- spin_unlock_irq(sh[j]->host_lock);
- time = jiffies;
- while ((jiffies - time) < (10 * HZ) && limit++ < 200000) udelay(100L);
- spin_lock_irq(sh[j]->host_lock);
-
- printk("%s: reset, interrupts disabled, loops %d.\n", BN(j), limit);
-
- for (i = 0; i < sh[j]->can_queue; i++) {
-
- if (HD(j)->cp_stat[i] == IN_RESET) {
- SCpnt = HD(j)->cp[i].SCpnt;
- unmap_dma(i, j);
- SCpnt->result = DID_RESET << 16;
- SCpnt->host_scribble = NULL;
-
- /* This mailbox is still waiting for its interrupt */
- HD(j)->cp_stat[i] = LOCKED;
-
- printk("%s, reset, mbox %d locked, DID_RESET, done.\n", BN(j), i);
- }
-
- else if (HD(j)->cp_stat[i] == ABORTING) {
- SCpnt = HD(j)->cp[i].SCpnt;
- unmap_dma(i, j);
- SCpnt->result = DID_RESET << 16;
- SCpnt->host_scribble = NULL;
-
- /* This mailbox was never queued to the adapter */
- HD(j)->cp_stat[i] = FREE;
-
- printk("%s, reset, mbox %d aborting, DID_RESET, done.\n", BN(j), i);
- }
-
- else
-
- /* Any other mailbox has already been set free by interrupt */
- continue;
-
- SCpnt->scsi_done(SCpnt);
- }
-
- HD(j)->in_reset = FALSE;
- do_trace = FALSE;
-
- if (arg_done) printk("%s: reset, exit, done.\n", BN(j));
- else printk("%s: reset, exit.\n", BN(j));
-
- spin_unlock_irq(sh[j]->host_lock);
- return SUCCESS;
-}
-
-static int u14_34f_bios_param(struct scsi_device *disk,
- struct block_device *bdev, sector_t capacity, int *dkinfo) {
- unsigned int j = 0;
- unsigned int size = capacity;
-
- dkinfo[0] = HD(j)->heads;
- dkinfo[1] = HD(j)->sectors;
- dkinfo[2] = size / (HD(j)->heads * HD(j)->sectors);
-
- if (ext_tran && (scsicam_bios_param(bdev, capacity, dkinfo) < 0)) {
- dkinfo[0] = 255;
- dkinfo[1] = 63;
- dkinfo[2] = size / (dkinfo[0] * dkinfo[1]);
- }
-
-#if defined (DEBUG_GEOMETRY)
- printk ("%s: bios_param, head=%d, sec=%d, cyl=%d.\n", driver_name,
- dkinfo[0], dkinfo[1], dkinfo[2]);
-#endif
-
- return FALSE;
-}
-
-static void sort(unsigned long sk[], unsigned int da[], unsigned int n,
- unsigned int rev) {
- unsigned int i, j, k, y;
- unsigned long x;
-
- for (i = 0; i < n - 1; i++) {
- k = i;
-
- for (j = k + 1; j < n; j++)
- if (rev) {
- if (sk[j] > sk[k]) k = j;
- }
- else {
- if (sk[j] < sk[k]) k = j;
- }
-
- if (k != i) {
- x = sk[k]; sk[k] = sk[i]; sk[i] = x;
- y = da[k]; da[k] = da[i]; da[i] = y;
- }
- }
-
- return;
- }
-
-static int reorder(unsigned int j, unsigned long cursec,
- unsigned int ihdlr, unsigned int il[], unsigned int n_ready) {
- struct scsi_cmnd *SCpnt;
- struct mscp *cpp;
- unsigned int k, n;
- unsigned int rev = FALSE, s = TRUE, r = TRUE;
- unsigned int input_only = TRUE, overlap = FALSE;
- unsigned long sl[n_ready], pl[n_ready], ll[n_ready];
- unsigned long maxsec = 0, minsec = ULONG_MAX, seek = 0, iseek = 0;
- unsigned long ioseek = 0;
-
- static unsigned int flushcount = 0, batchcount = 0, sortcount = 0;
- static unsigned int readycount = 0, ovlcount = 0, inputcount = 0;
- static unsigned int readysorted = 0, revcount = 0;
- static unsigned long seeksorted = 0, seeknosort = 0;
-
- if (link_statistics && !(++flushcount % link_statistics))
- printk("fc %d bc %d ic %d oc %d rc %d rs %d sc %d re %d"\
- " av %ldK as %ldK.\n", flushcount, batchcount, inputcount,
- ovlcount, readycount, readysorted, sortcount, revcount,
- seeknosort / (readycount + 1),
- seeksorted / (readycount + 1));
-
- if (n_ready <= 1) return FALSE;
-
- for (n = 0; n < n_ready; n++) {
- k = il[n]; cpp = &HD(j)->cp[k]; SCpnt = cpp->SCpnt;
-
- if (!(cpp->xdir == DTD_IN)) input_only = FALSE;
-
- if (blk_rq_pos(SCpnt->request) < minsec)
- minsec = blk_rq_pos(SCpnt->request);
- if (blk_rq_pos(SCpnt->request) > maxsec)
- maxsec = blk_rq_pos(SCpnt->request);
-
- sl[n] = blk_rq_pos(SCpnt->request);
- ioseek += blk_rq_sectors(SCpnt->request);
-
- if (!n) continue;
-
- if (sl[n] < sl[n - 1]) s = FALSE;
- if (sl[n] > sl[n - 1]) r = FALSE;
-
- if (link_statistics) {
- if (sl[n] > sl[n - 1])
- seek += sl[n] - sl[n - 1];
- else
- seek += sl[n - 1] - sl[n];
- }
-
- }
-
- if (link_statistics) {
- if (cursec > sl[0]) seek += cursec - sl[0]; else seek += sl[0] - cursec;
- }
-
- if (cursec > ((maxsec + minsec) / 2)) rev = TRUE;
-
- if (ioseek > ((maxsec - minsec) / 2)) rev = FALSE;
-
- if (!((rev && r) || (!rev && s))) sort(sl, il, n_ready, rev);
-
- if (!input_only) for (n = 0; n < n_ready; n++) {
- k = il[n]; cpp = &HD(j)->cp[k]; SCpnt = cpp->SCpnt;
- ll[n] = blk_rq_sectors(SCpnt->request); pl[n] = SCpnt->serial_number;
-
- if (!n) continue;
-
- if ((sl[n] == sl[n - 1]) || (!rev && ((sl[n - 1] + ll[n - 1]) > sl[n]))
- || (rev && ((sl[n] + ll[n]) > sl[n - 1]))) overlap = TRUE;
- }
-
- if (overlap) sort(pl, il, n_ready, FALSE);
-
- if (link_statistics) {
- if (cursec > sl[0]) iseek = cursec - sl[0]; else iseek = sl[0] - cursec;
- batchcount++; readycount += n_ready; seeknosort += seek / 1024;
- if (input_only) inputcount++;
- if (overlap) { ovlcount++; seeksorted += iseek / 1024; }
- else seeksorted += (iseek + maxsec - minsec) / 1024;
- if (rev && !r) { revcount++; readysorted += n_ready; }
- if (!rev && !s) { sortcount++; readysorted += n_ready; }
- }
-
-#if defined(DEBUG_LINKED_COMMANDS)
- if (link_statistics && (overlap || !(flushcount % link_statistics)))
- for (n = 0; n < n_ready; n++) {
- k = il[n]; cpp = &HD(j)->cp[k]; SCpnt = cpp->SCpnt;
- printk("%s %d.%d:%llu mb %d fc %d nr %d sec %ld ns %u"\
- " cur %ld s:%c r:%c rev:%c in:%c ov:%c xd %d.\n",
- (ihdlr ? "ihdlr" : "qcomm"), SCpnt->channel, SCpnt->target,
- (u8)SCpnt->lun, k, flushcount, n_ready,
- blk_rq_pos(SCpnt->request), blk_rq_sectors(SCpnt->request),
- cursec, YESNO(s), YESNO(r), YESNO(rev), YESNO(input_only),
- YESNO(overlap), cpp->xdir);
- }
-#endif
- return overlap;
-}
-
-static void flush_dev(struct scsi_device *dev, unsigned long cursec, unsigned int j,
- unsigned int ihdlr) {
- struct scsi_cmnd *SCpnt;
- struct mscp *cpp;
- unsigned int k, n, n_ready = 0, il[MAX_MAILBOXES];
-
- for (k = 0; k < sh[j]->can_queue; k++) {
-
- if (HD(j)->cp_stat[k] != READY && HD(j)->cp_stat[k] != IN_USE) continue;
-
- cpp = &HD(j)->cp[k]; SCpnt = cpp->SCpnt;
-
- if (SCpnt->device != dev) continue;
-
- if (HD(j)->cp_stat[k] == IN_USE) return;
-
- il[n_ready++] = k;
- }
-
- if (reorder(j, cursec, ihdlr, il, n_ready)) n_ready = 1;
-
- for (n = 0; n < n_ready; n++) {
- k = il[n]; cpp = &HD(j)->cp[k]; SCpnt = cpp->SCpnt;
-
- if (wait_on_busy(sh[j]->io_port, MAXLOOP)) {
- scmd_printk(KERN_INFO, SCpnt,
- "%s, mbox %d, adapter"
- " busy, will abort.\n", (ihdlr ? "ihdlr" : "qcomm"),
- k);
- HD(j)->cp_stat[k] = ABORTING;
- continue;
- }
-
- outl(H2DEV(cpp->cp_dma_addr), sh[j]->io_port + REG_OGM);
- outb(CMD_OGM_INTR, sh[j]->io_port + REG_LCL_INTR);
- HD(j)->cp_stat[k] = IN_USE;
- }
-
-}
-
-static irqreturn_t ihdlr(unsigned int j)
-{
- struct scsi_cmnd *SCpnt;
- unsigned int i, k, c, status, tstatus, reg, ret;
- struct mscp *spp, *cpp;
- int irq = sh[j]->irq;
-
- /* Check if this board need to be serviced */
- if (!((reg = inb(sh[j]->io_port + REG_SYS_INTR)) & IRQ_ASSERTED)) goto none;
-
- HD(j)->iocount++;
-
- if (do_trace) printk("%s: ihdlr, enter, irq %d, count %d.\n", BN(j), irq,
- HD(j)->iocount);
-
- /* Check if this board is still busy */
- if (wait_on_busy(sh[j]->io_port, 20 * MAXLOOP)) {
- outb(CMD_CLR_INTR, sh[j]->io_port + REG_SYS_INTR);
- printk("%s: ihdlr, busy timeout error, irq %d, reg 0x%x, count %d.\n",
- BN(j), irq, reg, HD(j)->iocount);
- goto none;
- }
-
- ret = inl(sh[j]->io_port + REG_ICM);
-
- /* Clear interrupt pending flag */
- outb(CMD_CLR_INTR, sh[j]->io_port + REG_SYS_INTR);
-
- /* Find the mailbox to be serviced on this board */
- for (i = 0; i < sh[j]->can_queue; i++)
- if (H2DEV(HD(j)->cp[i].cp_dma_addr) == ret) break;
-
- if (i >= sh[j]->can_queue)
- panic("%s: ihdlr, invalid mscp bus address %p, cp0 %p.\n", BN(j),
- (void *)ret, (void *)H2DEV(HD(j)->cp[0].cp_dma_addr));
-
- cpp = &(HD(j)->cp[i]);
- spp = cpp;
-
-#if defined(DEBUG_GENERATE_ABORTS)
- if ((HD(j)->iocount > 500) && ((HD(j)->iocount % 500) < 3)) goto handled;
-#endif
-
- if (HD(j)->cp_stat[i] == IGNORE) {
- HD(j)->cp_stat[i] = FREE;
- goto handled;
- }
- else if (HD(j)->cp_stat[i] == LOCKED) {
- HD(j)->cp_stat[i] = FREE;
- printk("%s: ihdlr, mbox %d unlocked, count %d.\n", BN(j), i,
- HD(j)->iocount);
- goto handled;
- }
- else if (HD(j)->cp_stat[i] == FREE) {
- printk("%s: ihdlr, mbox %d is free, count %d.\n", BN(j), i,
- HD(j)->iocount);
- goto handled;
- }
- else if (HD(j)->cp_stat[i] == IN_RESET)
- printk("%s: ihdlr, mbox %d is in reset.\n", BN(j), i);
- else if (HD(j)->cp_stat[i] != IN_USE)
- panic("%s: ihdlr, mbox %d, invalid cp_stat: %d.\n",
- BN(j), i, HD(j)->cp_stat[i]);
-
- HD(j)->cp_stat[i] = FREE;
- SCpnt = cpp->SCpnt;
-
- if (SCpnt == NULL) panic("%s: ihdlr, mbox %d, SCpnt == NULL.\n", BN(j), i);
-
- if (SCpnt->host_scribble == NULL)
- panic("%s: ihdlr, mbox %d, SCpnt %p garbled.\n", BN(j), i,
- SCpnt);
-
- if (*(unsigned int *)SCpnt->host_scribble != i)
- panic("%s: ihdlr, mbox %d, index mismatch %d.\n",
- BN(j), i, *(unsigned int *)SCpnt->host_scribble);
-
- sync_dma(i, j);
-
- if (linked_comm && SCpnt->device->queue_depth > 2
- && TLDEV(SCpnt->device->type))
- flush_dev(SCpnt->device, blk_rq_pos(SCpnt->request), j, TRUE);
-
- tstatus = status_byte(spp->target_status);
-
-#if defined(DEBUG_GENERATE_ERRORS)
- if ((HD(j)->iocount > 500) && ((HD(j)->iocount % 200) < 2))
- spp->adapter_status = 0x01;
-#endif
-
- switch (spp->adapter_status) {
- case ASOK: /* status OK */
-
- /* Forces a reset if a disk drive keeps returning BUSY */
- if (tstatus == BUSY && SCpnt->device->type != TYPE_TAPE)
- status = DID_ERROR << 16;
-
- /* If there was a bus reset, redo operation on each target */
- else if (tstatus != GOOD && SCpnt->device->type == TYPE_DISK
- && HD(j)->target_redo[scmd_id(SCpnt)][scmd_channel(SCpnt)])
- status = DID_BUS_BUSY << 16;
-
- /* Works around a flaw in scsi.c */
- else if (tstatus == CHECK_CONDITION
- && SCpnt->device->type == TYPE_DISK
- && (SCpnt->sense_buffer[2] & 0xf) == RECOVERED_ERROR)
- status = DID_BUS_BUSY << 16;
-
- else
- status = DID_OK << 16;
-
- if (tstatus == GOOD)
- HD(j)->target_redo[scmd_id(SCpnt)][scmd_channel(SCpnt)] = FALSE;
-
- if (spp->target_status && SCpnt->device->type == TYPE_DISK &&
- (!(tstatus == CHECK_CONDITION && HD(j)->iocount <= 1000 &&
- (SCpnt->sense_buffer[2] & 0xf) == NOT_READY)))
- scmd_printk(KERN_INFO, SCpnt,
- "ihdlr, target_status 0x%x, sense key 0x%x.\n",
- spp->target_status,
- SCpnt->sense_buffer[2]);
-
- HD(j)->target_to[scmd_id(SCpnt)][scmd_channel(SCpnt)] = 0;
-
- if (HD(j)->last_retried_pid == SCpnt->serial_number) HD(j)->retries = 0;
-
- break;
- case ASST: /* Selection Time Out */
-
- if (HD(j)->target_to[scmd_id(SCpnt)][scmd_channel(SCpnt)] > 1)
- status = DID_ERROR << 16;
- else {
- status = DID_TIME_OUT << 16;
- HD(j)->target_to[scmd_id(SCpnt)][scmd_channel(SCpnt)]++;
- }
-
- break;
-
- /* Perform a limited number of internal retries */
- case 0x93: /* Unexpected bus free */
- case 0x94: /* Target bus phase sequence failure */
- case 0x96: /* Illegal SCSI command */
- case 0xa3: /* SCSI bus reset error */
-
- for (c = 0; c <= sh[j]->max_channel; c++)
- for (k = 0; k < sh[j]->max_id; k++)
- HD(j)->target_redo[k][c] = TRUE;
-
-
- case 0x92: /* Data over/under-run */
-
- if (SCpnt->device->type != TYPE_TAPE
- && HD(j)->retries < MAX_INTERNAL_RETRIES) {
-
-#if defined(DID_SOFT_ERROR)
- status = DID_SOFT_ERROR << 16;
-#else
- status = DID_BUS_BUSY << 16;
-#endif
-
- HD(j)->retries++;
- HD(j)->last_retried_pid = SCpnt->serial_number;
- }
- else
- status = DID_ERROR << 16;
-
- break;
- case 0x01: /* Invalid command */
- case 0x02: /* Invalid parameters */
- case 0x03: /* Invalid data list */
- case 0x84: /* SCSI bus abort error */
- case 0x9b: /* Auto request sense error */
- case 0x9f: /* Unexpected command complete message error */
- case 0xff: /* Invalid parameter in the S/G list */
- default:
- status = DID_ERROR << 16;
- break;
- }
-
- SCpnt->result = status | spp->target_status;
-
-#if defined(DEBUG_INTERRUPT)
- if (SCpnt->result || do_trace)
-#else
- if ((spp->adapter_status != ASOK && HD(j)->iocount > 1000) ||
- (spp->adapter_status != ASOK &&
- spp->adapter_status != ASST && HD(j)->iocount <= 1000) ||
- do_trace || msg_byte(spp->target_status))
-#endif
- scmd_printk(KERN_INFO, SCpnt, "ihdlr, mbox %2d, err 0x%x:%x,"\
- " reg 0x%x, count %d.\n",
- i, spp->adapter_status, spp->target_status,
- reg, HD(j)->iocount);
-
- unmap_dma(i, j);
-
- /* Set the command state to inactive */
- SCpnt->host_scribble = NULL;
-
- SCpnt->scsi_done(SCpnt);
-
- if (do_trace) printk("%s: ihdlr, exit, irq %d, count %d.\n", BN(j), irq,
- HD(j)->iocount);
-
-handled:
- return IRQ_HANDLED;
-none:
- return IRQ_NONE;
-}
-
-static irqreturn_t do_interrupt_handler(int irq, void *shap) {
- unsigned int j;
- unsigned long spin_flags;
- irqreturn_t ret;
-
- /* Check if the interrupt must be processed by this handler */
- if ((j = (unsigned int)((char *)shap - sha)) >= num_boards) return IRQ_NONE;
-
- spin_lock_irqsave(sh[j]->host_lock, spin_flags);
- ret = ihdlr(j);
- spin_unlock_irqrestore(sh[j]->host_lock, spin_flags);
- return ret;
-}
-
-static int u14_34f_release(struct Scsi_Host *shpnt) {
- unsigned int i, j;
-
- for (j = 0; sh[j] != NULL && sh[j] != shpnt; j++);
-
- if (sh[j] == NULL)
- panic("%s: release, invalid Scsi_Host pointer.\n", driver_name);
-
- for (i = 0; i < sh[j]->can_queue; i++)
- kfree((&HD(j)->cp[i])->sglist);
-
- for (i = 0; i < sh[j]->can_queue; i++)
- pci_unmap_single(HD(j)->pdev, HD(j)->cp[i].cp_dma_addr,
- sizeof(struct mscp), PCI_DMA_BIDIRECTIONAL);
-
- free_irq(sh[j]->irq, &sha[j]);
-
- if (sh[j]->dma_channel != NO_DMA)
- free_dma(sh[j]->dma_channel);
-
- release_region(sh[j]->io_port, sh[j]->n_io_port);
- scsi_unregister(sh[j]);
- return FALSE;
-}
-
-#include "scsi_module.c"
-
-#ifndef MODULE
-__setup("u14-34f=", option_setup);
-#endif /* end MODULE */
projects / cascardo / linux.git / commitdiff