u14-34f.c
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- /*
- * u14-34f.c - Low-level driver for UltraStor 14F/34F SCSI host adapters.
- *
- * 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 then 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) 1994-2001 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 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 then 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;
- * 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,et:n".
- * An example using the list of detection probes could be:
- * "u14-34f=0x230,0x340,lc:y,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
- *
- * ----------------------------------------------------------------------------
- * 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/module.h>
- #include <linux/version.h>
- #ifndef LinuxVersionCode
- #define LinuxVersionCode(v, p, s) (((v)<<16)+((p)<<8)+(s))
- #endif
- #define MAX_INT_PARAM 10
- MODULE_PARM(boot_options, "s");
- MODULE_PARM(io_port, "1-" __MODULE_STRING(MAX_INT_PARAM) "i");
- MODULE_PARM(linked_comm, "i");
- MODULE_PARM(have_old_firmware, "i");
- MODULE_PARM(link_statistics, "i");
- MODULE_PARM(max_queue_depth, "i");
- MODULE_PARM(ext_tran, "i");
- MODULE_AUTHOR("Dario Ballabio");
- #include <linux/string.h>
- #include <linux/sched.h>
- #include <linux/kernel.h>
- #include <linux/ioport.h>
- #include <linux/delay.h>
- #include <asm/io.h>
- #include <asm/system.h>
- #include <asm/byteorder.h>
- #include <linux/proc_fs.h>
- #include <linux/blk.h>
- #include "scsi.h"
- #include "hosts.h"
- #include "sd.h"
- #include <asm/dma.h>
- #include <asm/irq.h>
- #include "u14-34f.h"
- #include <linux/stat.h>
- #include <linux/config.h>
- #include <linux/init.h>
- #include <linux/ctype.h>
- #include <linux/spinlock.h>
- #define SPIN_FLAGS unsigned long spin_flags;
- #define SPIN_LOCK spin_lock_irq(&io_request_lock);
- #define SPIN_LOCK_SAVE spin_lock_irqsave(&io_request_lock, spin_flags);
- #define SPIN_UNLOCK spin_unlock_irq(&io_request_lock);
- #define SPIN_UNLOCK_RESTORE
- spin_unlock_irqrestore(&io_request_lock, spin_flags);
- /* 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 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 13
- #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 {
- unsigned char opcode: 3; /* type of command */
- unsigned char xdir: 2; /* data transfer direction */
- unsigned char dcn: 1; /* disable disconnect */
- unsigned char ca: 1; /* use cache (if available) */
- unsigned char sg: 1; /* scatter/gather operation */
- unsigned char target: 3; /* SCSI target id */
- unsigned char channel: 2; /* SCSI channel number */
- unsigned char lun: 3; /* SCSI logical unit number */
- 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 scsi_cdbs_len; /* 6, 10, or 12 */
- unsigned char scsi_cdbs[12]; /* SCSI commands */
- unsigned char adapter_status; /* non-zero indicates HA error */
- unsigned char target_status; /* non-zero indicates target error */
- unsigned int sense_addr PACKED;
- Scsi_Cmnd *SCpnt;
- unsigned int index; /* cp index */
- struct sg_list *sglist;
- };
- 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 */
- char board_id[256]; /* data from INQUIRY on 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 */
- unsigned char heads;
- unsigned char sectors;
- /* slot != 0 for the U24F, slot == 0 for both the U14F and U34F */
- unsigned char slot;
- };
- static struct Scsi_Host *sh[MAX_BOARDS + 1];
- static const char *driver_name = "Ux4F";
- static char sha[MAX_BOARDS];
- /* 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)
- #define SWAP_BYTE(x) ((unsigned long)(
- (((unsigned long)(x) & 0x000000ffU) << 24) |
- (((unsigned long)(x) & 0x0000ff00U) << 8) |
- (((unsigned long)(x) & 0x00ff0000U) >> 8) |
- (((unsigned long)(x) & 0xff000000U) >> 24)))
- #if defined(__BIG_ENDIAN)
- #define H2DEV(x) SWAP_BYTE(x)
- #else
- #define H2DEV(x) (x)
- #endif
- #define DEV2H(x) H2DEV(x)
- #define V2DEV(addr) ((addr) ? H2DEV(virt_to_bus((void *)addr)) : 0)
- #define DEV2V(addr) ((addr) ? DEV2H(bus_to_virt((unsigned long)addr)) : 0)
- static void do_interrupt_handler(int, void *, struct pt_regs *);
- static void flush_dev(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;
- static char *boot_options;
- #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_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
- static void select_queue_depths(struct Scsi_Host *host, Scsi_Device *devlist) {
- Scsi_Device *dev;
- int j, ntag = 0, nuntag = 0, tqd, utqd;
- j = ((struct hostdata *) host->hostdata)->board_number;
- for(dev = devlist; dev; dev = dev->next) {
- if (dev->host != host) continue;
- if (TLDEV(dev->type) && (dev->tagged_supported || linked_comm))
- ntag++;
- else
- nuntag++;
- }
- utqd = MAX_CMD_PER_LUN;
- tqd = (host->can_queue - utqd * nuntag) / (ntag ? ntag : 1);
- if (tqd > max_queue_depth) tqd = max_queue_depth;
- if (tqd < MAX_CMD_PER_LUN) tqd = MAX_CMD_PER_LUN;
- for(dev = devlist; dev; dev = dev->next) {
- char *tag_suffix = "", *link_suffix = "";
- if (dev->host != host) continue;
- if (TLDEV(dev->type) && (dev->tagged_supported || linked_comm))
- dev->queue_depth = tqd;
- else
- dev->queue_depth = utqd;
- if (TLDEV(dev->type)) {
- if (linked_comm && dev->queue_depth > 2)
- link_suffix = ", sorted";
- else
- link_suffix = ", unsorted";
- }
- if (dev->tagged_supported && TLDEV(dev->type) && dev->tagged_queue)
- tag_suffix = ", soft-tagged";
- else if (dev->tagged_supported && TLDEV(dev->type))
- tag_suffix = ", tagged";
- printk("%s: scsi%d, channel %d, id %d, lun %d, cmds/lun %d%s%s.n",
- BN(j), host->host_no, dev->channel, dev->id, dev->lun,
- dev->queue_depth, link_suffix, tag_suffix);
- }
- return;
- }
- static inline 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;
- unsigned int time, limit = 0;
- cpp = &HD(j)->cp[0];
- memset(cpp, 0, sizeof(struct mscp));
- cpp->opcode = OP_HOST_ADAPTER;
- cpp->xdir = DTD_IN;
- cpp->data_address = V2DEV(HD(j)->board_id);
- cpp->data_len = H2DEV(sizeof(HD(j)->board_id));
- cpp->scsi_cdbs_len = 6;
- cpp->scsi_cdbs[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(V2DEV(cpp), sh[j]->io_port + REG_OGM);
- /* Issue OGM interrupt */
- outb(CMD_OGM_INTR, sh[j]->io_port + REG_LCL_INTR);
- SPIN_UNLOCK
- time = jiffies;
- while ((jiffies - time) < HZ && limit++ < 20000) udelay(100L);
- SPIN_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;
- }
- return FALSE;
- }
- static inline int port_detect
- (unsigned long port_base, unsigned int j, 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 {
- unsigned char bios_segment: 3;
- unsigned char removable_disks_as_fixed: 1;
- unsigned char interrupt: 2;
- unsigned char dma_channel: 2;
- } config_1;
- struct config_2 {
- unsigned char ha_scsi_id: 3;
- unsigned char mapping_mode: 2;
- unsigned char bios_drive_number: 1;
- unsigned char tfr_port: 2;
- } 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
- return FALSE;
- }
- if (inb(port_base + REG_PRODUCT_ID1) != PRODUCT_ID1) {
- release_region(port_base, REGION_SIZE);
- return FALSE;
- }
- in_byte = inb(port_base + REG_PRODUCT_ID2);
- if ((in_byte & 0xf0) != PRODUCT_ID2) {
- release_region(port_base, REGION_SIZE);
- return FALSE;
- }
- *(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,
- SA_INTERRUPT | ((subversion == ESA) ? SA_SHIRQ : 0),
- driver_name, (void *) &sha[j])) {
- printk("%s: unable to allocate IRQ %u, detaching.n", name, irq);
- release_region(port_base, REGION_SIZE);
- return FALSE;
- }
- if (subversion == ISA && request_dma(dma_channel, driver_name)) {
- printk("%s: unable to allocate DMA channel %u, detaching.n",
- name, dma_channel);
- free_irq(irq, &sha[j]);
- release_region(port_base, REGION_SIZE);
- return FALSE;
- }
- if (have_old_firmware) tpnt->use_clustering = DISABLE_CLUSTERING;
- sh[j] = scsi_register(tpnt, sizeof(struct hostdata));
- if (sh[j] == NULL) {
- printk("%s: unable to register host, detaching.n", name);
- free_irq(irq, &sha[j]);
- if (subversion == ISA) free_dma(dma_channel);
- release_region(port_base, REGION_SIZE);
- return FALSE;
- }
- 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;
- sh[j]->select_queue_depths = select_queue_depths;
- #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)->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;
- scsi_register_blocked_host(sh[j]);
- 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);
- 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);
- u14_34f_release(sh[j]);
- return FALSE;
- }
- 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 (j == 0) {
- printk("UltraStor 14F/34F: Copyright (C) 1994-2001 Dario Ballabio.n");
- printk("%s config options -> of:%c, lc:%c, mq:%d, et:%c.n",
- driver_name, YESNO(have_old_firmware), 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 %u.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;
- }
- 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, "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;
- }
- int u14_34f_detect(Scsi_Host_Template *tpnt)
- {
- unsigned int j = 0, k;
- tpnt->proc_name = "u14-34f";
- if(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 inline void build_sg_list(struct mscp *cpp, Scsi_Cmnd *SCpnt) {
- unsigned int k, data_len = 0;
- struct scatterlist *sgpnt;
- sgpnt = (struct scatterlist *) SCpnt->request_buffer;
- for (k = 0; k < SCpnt->use_sg; k++) {
- cpp->sglist[k].address = V2DEV(sgpnt[k].address);
- cpp->sglist[k].num_bytes = H2DEV(sgpnt[k].length);
- data_len += sgpnt[k].length;
- }
- cpp->use_sg = SCpnt->use_sg;
- cpp->data_address = V2DEV(cpp->sglist);
- cpp->data_len = H2DEV(data_len);
- }
- static inline int do_qcomm(Scsi_Cmnd *SCpnt, void (*done)(Scsi_Cmnd *)) {
- unsigned int i, j, k;
- struct mscp *cpp;
- 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
- };
- /* j is the board number */
- j = ((struct hostdata *) SCpnt->host->hostdata)->board_number;
- if (SCpnt->host_scribble)
- panic("%s: qcomm, pid %ld, SCpnt %p already active.n",
- BN(j), SCpnt->pid, 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) - sizeof(struct sg_list *));
- SCpnt->scsi_done = done;
- cpp->index = i;
- SCpnt->host_scribble = (unsigned char *) &cpp->index;
- if (do_trace) printk("%s: qcomm, mbox %d, target %d.%d:%d, pid %ld.n",
- BN(j), i, SCpnt->channel, SCpnt->target,
- SCpnt->lun, SCpnt->pid);
- 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;
- }
- cpp->opcode = OP_SCSI;
- cpp->channel = SCpnt->channel;
- cpp->target = SCpnt->target;
- cpp->lun = SCpnt->lun;
- cpp->SCpnt = SCpnt;
- cpp->sense_addr = V2DEV(SCpnt->sense_buffer);
- cpp->sense_len = sizeof SCpnt->sense_buffer;
- if (SCpnt->use_sg) {
- cpp->sg = TRUE;
- build_sg_list(cpp, SCpnt);
- }
- else {
- cpp->data_address = V2DEV(SCpnt->request_buffer);
- cpp->data_len = H2DEV(SCpnt->request_bufflen);
- }
- cpp->scsi_cdbs_len = SCpnt->cmd_len;
- memcpy(cpp->scsi_cdbs, SCpnt->cmnd, cpp->scsi_cdbs_len);
- if (linked_comm && SCpnt->device->queue_depth > 2
- && TLDEV(SCpnt->device->type)) {
- HD(j)->cp_stat[i] = READY;
- flush_dev(SCpnt->device, SCpnt->request.sector, j, FALSE);
- return 0;
- }
- if (wait_on_busy(sh[j]->io_port, MAXLOOP)) {
- SCpnt->host_scribble = NULL;
- printk("%s: qcomm, target %d.%d:%d, pid %ld, adapter busy.n",
- BN(j), SCpnt->channel, SCpnt->target, SCpnt->lun, SCpnt->pid);
- return 1;
- }
- /* Store pointer in OGM address bytes */
- outl(V2DEV(cpp), 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;
- }
- int u14_34f_queuecommand(Scsi_Cmnd *SCpnt, void (*done)(Scsi_Cmnd *)) {
- int rtn;
- rtn = do_qcomm(SCpnt, done);
- return rtn;
- }
- static inline int do_abort(Scsi_Cmnd *SCarg) {
- unsigned int i, j;
- j = ((struct hostdata *) SCarg->host->hostdata)->board_number;
- if (SCarg->host_scribble == NULL) {
- printk("%s: abort, target %d.%d:%d, pid %ld inactive.n",
- BN(j), SCarg->channel, SCarg->target, SCarg->lun, SCarg->pid);
- return SUCCESS;
- }
- i = *(unsigned int *)SCarg->host_scribble;
- printk("%s: abort, mbox %d, target %d.%d:%d, pid %ld.n",
- BN(j), i, SCarg->channel, SCarg->target, SCarg->lun, SCarg->pid);
- 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);
- if (SCarg->eh_state == SCSI_STATE_TIMEOUT) {
- SCarg->host_scribble = NULL;
- HD(j)->cp_stat[i] = FREE;
- printk("%s, abort, mbox %d, eh_state timeout, pid %ld.n",
- BN(j), i, SCarg->pid);
- return SUCCESS;
- }
- 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) {
- SCarg->result = DID_ABORT << 16;
- SCarg->host_scribble = NULL;
- HD(j)->cp_stat[i] = FREE;
- printk("%s, abort, mbox %d ready, DID_ABORT, pid %ld done.n",
- BN(j), i, SCarg->pid);
- SCarg->scsi_done(SCarg);
- return SUCCESS;
- }
- panic("%s: abort, mbox %d, invalid cp_stat.n", BN(j), i);
- }
- int u14_34f_abort(Scsi_Cmnd *SCarg) {
- return do_abort(SCarg);
- }
- static inline int do_reset(Scsi_Cmnd *SCarg) {
- unsigned int i, j, time, k, c, limit = 0;
- int arg_done = FALSE;
- Scsi_Cmnd *SCpnt;
- j = ((struct hostdata *) SCarg->host->hostdata)->board_number;
- printk("%s: reset, enter, target %d.%d:%d, pid %ld.n",
- BN(j), SCarg->channel, SCarg->target, SCarg->lun, SCarg->pid);
- if (SCarg->host_scribble == NULL)
- printk("%s: reset, pid %ld inactive.n", BN(j), SCarg->pid);
- if (HD(j)->in_reset) {
- printk("%s: reset, exit, already in reset.n", BN(j));
- return FAILED;
- }
- if (wait_on_busy(sh[j]->io_port, MAXLOOP)) {
- printk("%s: reset, exit, timeout error.n", BN(j));
- 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, pid %ld.n",
- BN(j), i, SCpnt->pid);
- }
- else {
- HD(j)->cp_stat[i] = IN_RESET;
- printk("%s: reset, mbox %d in reset, pid %ld.n",
- BN(j), i, SCpnt->pid);
- }
- 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));
- 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
- time = jiffies;
- while ((jiffies - time) < (10 * HZ) && limit++ < 200000) udelay(100L);
- SPIN_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;
- 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, pid %ld done.n",
- BN(j), i, SCpnt->pid);
- }
- else if (HD(j)->cp_stat[i] == ABORTING) {
- SCpnt = HD(j)->cp[i].SCpnt;
- 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, pid %ld done.n",
- BN(j), i, SCpnt->pid);
- }
- 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, pid %ld done.n", BN(j), SCarg->pid);
- else printk("%s: reset, exit.n", BN(j));
- return SUCCESS;
- }
- int u14_34f_reset(Scsi_Cmnd *SCarg) {
- return do_reset(SCarg);
- }
- int u14_34f_biosparam(Disk *disk, kdev_t dev, int *dkinfo) {
- unsigned int j = 0;
- int size = disk->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(disk, dev, dkinfo) < 0)) {
- dkinfo[0] = 255;
- dkinfo[1] = 63;
- dkinfo[2] = size / (dkinfo[0] * dkinfo[1]);
- }
- #if defined (DEBUG_GEOMETRY)
- printk ("%s: biosparam, 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 inline int reorder(unsigned int j, unsigned long cursec,
- unsigned int ihdlr, unsigned int il[], unsigned int n_ready) {
- 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 (SCpnt->request.sector < minsec) minsec = SCpnt->request.sector;
- if (SCpnt->request.sector > maxsec) maxsec = SCpnt->request.sector;
- sl[n] = SCpnt->request.sector;
- ioseek += SCpnt->request.nr_sectors;
- 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] = SCpnt->request.nr_sectors; pl[n] = SCpnt->pid;
- 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:%d pid %ld mb %d fc %d nr %d sec %ld ns %ld"
- " cur %ld s:%c r:%c rev:%c in:%c ov:%c xd %d.n",
- (ihdlr ? "ihdlr" : "qcomm"), SCpnt->channel, SCpnt->target,
- SCpnt->lun, SCpnt->pid, k, flushcount, n_ready,
- SCpnt->request.sector, SCpnt->request.nr_sectors, cursec,
- YESNO(s), YESNO(r), YESNO(rev), YESNO(input_only),
- YESNO(overlap), cpp->xdir);
- }
- #endif
- return overlap;
- }
- static void flush_dev(Scsi_Device *dev, unsigned long cursec, unsigned int j,
- unsigned int ihdlr) {
- 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)) {
- printk("%s: %s, target %d.%d:%d, pid %ld, mbox %d, adapter"
- " busy, will abort.n", BN(j), (ihdlr ? "ihdlr" : "qcomm"),
- SCpnt->channel, SCpnt->target, SCpnt->lun, SCpnt->pid, k);
- HD(j)->cp_stat[k] = ABORTING;
- continue;
- }
- outl(V2DEV(cpp), 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 inline void ihdlr(int irq, unsigned int j) {
- Scsi_Cmnd *SCpnt;
- unsigned int i, k, c, status, tstatus, reg, ret;
- struct mscp *spp, *cpp;
- if (sh[j]->irq != irq)
- panic("%s: ihdlr, irq %d, sh[j]->irq %d.n", BN(j), irq, sh[j]->irq);
- /* Check if this board need to be serviced */
- if (!((reg = inb(sh[j]->io_port + REG_SYS_INTR)) & IRQ_ASSERTED)) return;
- 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);
- return;
- }
- spp = (struct mscp *)DEV2V(ret = inl(sh[j]->io_port + REG_ICM));
- cpp = spp;
- /* Clear interrupt pending flag */
- outb(CMD_CLR_INTR, sh[j]->io_port + REG_SYS_INTR);
- #if defined(DEBUG_GENERATE_ABORTS)
- if ((HD(j)->iocount > 500) && ((HD(j)->iocount % 500) < 3)) return;
- #endif
- /* Find the mailbox to be serviced on this board */
- i = cpp - HD(j)->cp;
- if (cpp < HD(j)->cp || cpp >= HD(j)->cp + sh[j]->can_queue
- || i >= sh[j]->can_queue)
- panic("%s: ihdlr, invalid mscp bus address %p, cp0 %p.n", BN(j),
- (void *)ret, HD(j)->cp);
- if (HD(j)->cp_stat[i] == IGNORE) {
- HD(j)->cp_stat[i] = FREE;
- return;
- }
- 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);
- return;
- }
- else if (HD(j)->cp_stat[i] == FREE) {
- printk("%s: ihdlr, mbox %d is free, count %d.n", BN(j), i,
- HD(j)->iocount);
- return;
- }
- 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, pid %ld, SCpnt %p garbled.n", BN(j), i,
- SCpnt->pid, SCpnt);
- if (*(unsigned int *)SCpnt->host_scribble != i)
- panic("%s: ihdlr, mbox %d, pid %ld, index mismatch %d.n",
- BN(j), i, SCpnt->pid, *(unsigned int *)SCpnt->host_scribble);
- if (linked_comm && SCpnt->device->queue_depth > 2
- && TLDEV(SCpnt->device->type))
- flush_dev(SCpnt->device, SCpnt->request.sector, 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[SCpnt->target][SCpnt->channel])
- 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[SCpnt->target][SCpnt->channel] = FALSE;
- if (spp->target_status && SCpnt->device->type == TYPE_DISK &&
- (!(tstatus == CHECK_CONDITION && HD(j)->iocount <= 1000 &&
- (SCpnt->sense_buffer[2] & 0xf) == NOT_READY)))
- printk("%s: ihdlr, target %d.%d:%d, pid %ld, "
- "target_status 0x%x, sense key 0x%x.n", BN(j),
- SCpnt->channel, SCpnt->target, SCpnt->lun,
- SCpnt->pid, spp->target_status,
- SCpnt->sense_buffer[2]);
- HD(j)->target_to[SCpnt->target][SCpnt->channel] = 0;
- if (HD(j)->last_retried_pid == SCpnt->pid) HD(j)->retries = 0;
- break;
- case ASST: /* Selection Time Out */
- if (HD(j)->target_to[SCpnt->target][SCpnt->channel] > 1)
- status = DID_ERROR << 16;
- else {
- status = DID_TIME_OUT << 16;
- HD(j)->target_to[SCpnt->target][SCpnt->channel]++;
- }
- 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->pid;
- }
- 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
- printk("%s: ihdlr, mbox %2d, err 0x%x:%x,"
- " target %d.%d:%d, pid %ld, reg 0x%x, count %d.n",
- BN(j), i, spp->adapter_status, spp->target_status,
- SCpnt->channel, SCpnt->target, SCpnt->lun, SCpnt->pid,
- reg, HD(j)->iocount);
- /* 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);
- return;
- }
- static void do_interrupt_handler(int irq, void *shap, struct pt_regs *regs) {
- unsigned int j;
- SPIN_FLAGS
- /* Check if the interrupt must be processed by this handler */
- if ((j = (unsigned int)((char *)shap - sha)) >= num_boards) return;
- SPIN_LOCK_SAVE
- ihdlr(irq, j);
- SPIN_UNLOCK_RESTORE
- }
- 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);
- if( sh[j]->unchecked_isa_dma ) {
- scsi_deregister_blocked_host(sh[j]);
- }
- for (i = 0; i < sh[j]->can_queue; i++)
- if ((&HD(j)->cp[i])->sglist) kfree((&HD(j)->cp[i])->sglist);
- 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;
- }
- MODULE_LICENSE("BSD without advertisement clause");
- static Scsi_Host_Template driver_template = ULTRASTOR_14_34F;
- #include "scsi_module.c"
- #ifndef MODULE
- __setup("u14-34f=", option_setup);
- #endif /* end MODULE */