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Diffstat (limited to 'drivers/scsi/u14-34f.c')
| -rw-r--r-- | drivers/scsi/u14-34f.c | 1987 |
1 files changed, 1987 insertions, 0 deletions
diff --git a/drivers/scsi/u14-34f.c b/drivers/scsi/u14-34f.c new file mode 100644 index 0000000..dca2154 --- /dev/null +++ b/drivers/scsi/u14-34f.c @@ -0,0 +1,1987 @@ +/* + * 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 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/config.h> +#include <linux/string.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/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 <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_cmnd *, void (*done)(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_device_reset_handler = NULL, + .eh_bus_reset_handler = NULL, + .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 *, struct pt_regs *); +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_adjust_queue_depth(dev, MSG_SIMPLE_TAG, tqd); + tag_suffix = ", simple tags"; + } + else if (tag_mode == TAG_ORDERED) { + scsi_adjust_queue_depth(dev, MSG_ORDERED_TAG, tqd); + tag_suffix = ", ordered tags"; + } + else { + scsi_adjust_queue_depth(dev, 0, tqd); + tag_suffix = ", no tags"; + } + + else if (TLDEV(dev->type) && linked_comm) { + scsi_adjust_queue_depth(dev, 0, tqd); + tag_suffix = ", untagged"; + } + + else { + scsi_adjust_queue_depth(dev, 0, 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 = ""; + + 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 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 time, limit = 0; + + 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, + SA_INTERRUPT | ((subversion == ESA) ? SA_SHIRQ : 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 %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; + +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, count, pci_dir; + struct scatterlist *sgpnt; + 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, + sizeof SCpnt->sense_buffer, PCI_DMA_FROMDEVICE)); + + cpp->sense_len = sizeof SCpnt->sense_buffer; + + if (!SCpnt->use_sg) { + + /* If we get here with PCI_DMA_NONE, pci_map_single triggers a BUG() */ + if (!SCpnt->request_bufflen) pci_dir = PCI_DMA_BIDIRECTIONAL; + + if (SCpnt->request_buffer) + cpp->data_address = H2DEV(pci_map_single(HD(j)->pdev, + SCpnt->request_buffer, SCpnt->request_bufflen, pci_dir)); + + cpp->data_len = H2DEV(SCpnt->request_bufflen); + return; + } + + sgpnt = (struct scatterlist *) SCpnt->request_buffer; + count = pci_map_sg(HD(j)->pdev, sgpnt, SCpnt->use_sg, pci_dir); + + for (k = 0; k < count; k++) { + cpp->sglist[k].address = H2DEV(sg_dma_address(&sgpnt[k])); + cpp->sglist[k].num_bytes = H2DEV(sg_dma_len(&sgpnt[k])); + data_len += sgpnt[k].length; + } + + cpp->sg = TRUE; + cpp->use_sg = SCpnt->use_sg; + cpp->data_address = H2DEV(pci_map_single(HD(j)->pdev, cpp->sglist, + SCpnt->use_sg * sizeof(struct sg_list), pci_dir)); + cpp->data_len = H2DEV(data_len); +} + +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); + + if (SCpnt->use_sg) + pci_unmap_sg(HD(j)->pdev, SCpnt->request_buffer, SCpnt->use_sg, pci_dir); + + 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 (SCpnt->use_sg) + pci_dma_sync_sg_for_cpu(HD(j)->pdev, SCpnt->request_buffer, + SCpnt->use_sg, 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_FROM_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(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, 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) - 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:%d, pid %ld.\n", + BN(j), i, SCpnt->device->channel, SCpnt->device->id, + SCpnt->device->lun, SCpnt->pid); + + cpp->opcode = OP_SCSI; + cpp->channel = SCpnt->device->channel; + cpp->target = SCpnt->device->id; + cpp->lun = 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, SCpnt->request->sector, j, FALSE); + return 0; + } + + if (wait_on_busy(sh[j]->io_port, MAXLOOP)) { + unmap_dma(i, j); + SCpnt->host_scribble = NULL; + printk("%s: qcomm, target %d.%d:%d, pid %ld, adapter busy.\n", + BN(j), SCpnt->device->channel, SCpnt->device->id, SCpnt->device->lun, SCpnt->pid); + 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 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) { + printk("%s: abort, target %d.%d:%d, pid %ld inactive.\n", + BN(j), SCarg->device->channel, SCarg->device->id, SCarg->device->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->device->channel, SCarg->device->id, SCarg->device->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) { + unmap_dma(i, j); + 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) { + 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, 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); +} + +static int u14_34f_eh_host_reset(struct scsi_cmnd *SCarg) { + unsigned int i, j, time, k, c, limit = 0; + int arg_done = FALSE; + struct scsi_cmnd *SCpnt; + + j = ((struct hostdata *) SCarg->device->host->hostdata)->board_number; + printk("%s: reset, enter, target %d.%d:%d, pid %ld.\n", + BN(j), SCarg->device->channel, SCarg->device->id, SCarg->device->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_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, pid %ld done.\n", + BN(j), i, SCpnt->pid); + } + + 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, 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; +} + +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 (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(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)) { + printk("%s: %s, target %d.%d:%d, pid %ld, mbox %d, adapter"\ + " busy, will abort.\n", BN(j), (ihdlr ? "ihdlr" : "qcomm"), + SCpnt->device->channel, SCpnt->device->id, SCpnt->device->lun, SCpnt->pid, 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(int irq, unsigned int j) { + struct 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)) 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, 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); + + sync_dma(i, j); + + 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->device->id][SCpnt->device->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->device->id][SCpnt->device->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->device->channel, SCpnt->device->id, SCpnt->device->lun, + SCpnt->pid, spp->target_status, + SCpnt->sense_buffer[2]); + + HD(j)->target_to[SCpnt->device->id][SCpnt->device->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->device->id][SCpnt->device->channel] > 1) + status = DID_ERROR << 16; + else { + status = DID_TIME_OUT << 16; + HD(j)->target_to[SCpnt->device->id][SCpnt->device->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->device->channel, SCpnt->device->id, SCpnt->device->lun, SCpnt->pid, + 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, + struct pt_regs *regs) { + 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(irq, 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++) + if ((&HD(j)->cp[i])->sglist) 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 */ |
