/* * eata.c - Low-level driver for EATA/DMA SCSI host adapters. * * 03 Jun 2003 Rev. 8.10 for linux-2.5.70 * + Update for new IRQ API. * + Use "goto" when appropriate. * + Drop eata.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] * rs:[y|n] rev_scan=[1|0] * ip:[y|n] isa_probe=[1|0] * ep:[y|n] eisa_probe=[1|0] * pp:[y|n] pci_probe=[1|0] * * A valid example using the new parameter format is: * modprobe eata "eata=0x7410,0x230,lc:y,tm:0,mq:4,ep:n" * * which is equivalent to the old format: * modprobe eata io_port=0x7410,0x230 linked_comm=1 tag_mode=0 \ * max_queue_depth=4 eisa_probe=0 * * 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. * + The tagged_comm module parameter has been removed, use tag_mode * instead, equivalent to the "tm:" boot option. * * 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 * + This release is the first one tested on a Big Endian platform: * fixed endian-ness problem due to bitfields; * fixed endian-ness problem in read_pio. * + Added new options for selectively probing ISA, EISA and PCI bus: * * Boot option Parameter name Default according to * * ip:[y|n] isa_probe=[1|0] CONFIG_ISA defined * ep:[y|n] eisa_probe=[1|0] CONFIG_EISA defined * pp:[y|n] pci_probe=[1|0] CONFIG_PCI defined * * The default action is to perform probing if the corresponding * bus is configured and to skip probing otherwise. * * + If pci_probe is in effect and a list of I/O ports is specified * as parameter or boot option, pci_enable_device() is performed * on all pci devices matching PCI_CLASS_STORAGE_SCSI. * * 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. * + Fixed a board detection bug: in a system with * multiple ISA/EISA boards, all but the first one * were erroneously detected as PCI. * * 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 * + Clean up all pci related routines. * + Fix data transfer direction for opcode SEND_CUE_SHEET (0x5d) * * 30 Jan 2001 Rev. 6.04 for linux 2.4.1 * + Call pci_resource_start after pci_enable_device. * * 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 * + Return code checked when calling pci_enable_device. * + 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" or "soft-tagged" : * - "soft-tagged" means that the driver is trying to do its * own tagging (i.e. the tc:y option is in effect); * - "tagged" means that the device supports tagged commands, * but the driver lets the HBA be responsible for tagging * support. * * 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 eata 'boot_options="0x7410,0x230,lc:y,tc:n,mq:4"' * * 9 Sep 1999 Rev. 5.10 for linux 2.2.12 and 2.3.17 * + 64bit cleanup for Linux/Alpha platform support * (contribution from H.J. Lu). * * 22 Jul 1999 Rev. 5.00 for linux 2.2.10 and 2.3.11 * + Removed pre-2.2 source code compatibility. * + Added call to pci_set_master. * * 26 Jul 1998 Rev. 4.33 for linux 2.0.35 and 2.1.111 * + Added command line option (rs:[y|n]) to reverse the scan order * of PCI boards. The default is rs:y, which reverses the BIOS order * while registering PCI boards. The default value rs:y generates * the same order of all previous revisions of this driver. * Pls. note that "BIOS order" might have been reversed itself * after the 2.1.9x PCI modifications in the linux kernel. * The rs value is ignored when the explicit list of addresses * is used by the "eata=port0,port1,..." command line option. * + Added command line option (et:[y|n]) to force use of extended * translation (255 heads, 63 sectors) as disk geometry. * The default is et:n, which uses the disk geometry returned * by scsicam_bios_param. 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. * * 16 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 * Added support for new PCI code and IO-APIC remapping of irqs. * 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. * Increased controller busy timeout in order to better support * slow SCSI devices. * * 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. * Fixed spurious timeouts caused by long simple queue tag sequences. * New command line option (tm:[0-3]) to choose the type of tags: * 0 -> mixed (default); 1 -> simple; 2 -> head; 3 -> ordered. * * 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]), tagged commands (tc:[y|n]) and to set the max queue * depth (mq:xx). Default is "eata=lc:n,tc:n,mq:16". * Improved command linking. * Documented how to setup RAID-0 with DPT SmartRAID boards. * * 8 Jan 1997 rev. 2.50 for linux 2.1.20 and 2.0.27 * Added linked command support. * Improved detection of PCI boards using ISA base addresses. * * 3 Dec 1996 rev. 2.40 for linux 2.1.14 and 2.0.27 * Added support for tagged commands and queue depth adjustment. * * 22 Nov 1996 rev. 2.30 for linux 2.1.12 and 2.0.26 * When CONFIG_PCI is defined, BIOS32 is used to include in the * list of i/o ports to be probed all the PCI SCSI controllers. * The list of i/o ports to be probed can be overwritten by the * "eata=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 support for EATA 2.0C, PCI, multichannel and wide SCSI. * * 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 * 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. * * 6 Jul 1995 rev. 2.01 for linux 1.3.7 * Update required by the new /proc/scsi support. * * 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 * Now DEBUG_RESET is disabled by default. * Register a board even if it does not assert DMA protocol support * (DPT SK2011B does not report correctly the dmasup bit). * * 9 Feb 1995 rev. 1.16 for linux 1.1.90 * Use host->wish_block instead of host->block. * New list of Data Out SCSI commands. * * 8 Feb 1995 rev. 1.15 for linux 1.1.89 * Cleared target_time_out counter while performing a reset. * All external symbols renamed to avoid possible name conflicts. * * 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. * * 24 Jan 1995 rev. 1.13 for linux 1.1.85 * Use optimized board configuration, with a measured performance * increase in the range 10%-20% on i/o throughput. * * 16 Jan 1995 rev. 1.12 for linux 1.1.81 * Fix mscp structure comments (no functional change). * Display a message if check_region detects a port address * already in use. * * 17 Dec 1994 rev. 1.11 for linux 1.1.74 * Use the scsicam_bios_param routine. This allows an easy * migration path from disk partition tables created using * different SCSI drivers and non optimal disk geometry. * * 15 Dec 1994 rev. 1.10 for linux 1.1.74 * Added support for ISA EATA boards (DPT PM2011, DPT PM2021). * The host->block flag is set for all the detected ISA boards. * The detect routine no longer enforces LEVEL triggering * for EISA boards, it just prints a warning message. * * 30 Nov 1994 rev. 1.09 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. * * 18 Nov 1994 rev. 1.08 for linux 1.1.64 * Forces sg_tablesize = 64 and can_queue = 64 if these * values are not correctly detected (DPT PM2012). * * 14 Nov 1994 rev. 1.07 for linux 1.1.63 Final BETA release. * 04 Aug 1994 rev. 1.00 for linux 1.1.39 First BETA release. * * * This driver is based on the CAM (Common Access Method Committee) * EATA (Enhanced AT Bus Attachment) rev. 2.0A, using DMA protocol. * * 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. * */ /* * * Here is a brief description of the DPT SCSI host adapters. * All these boards provide an EATA/DMA compatible programming interface * and are fully supported by this driver in any configuration, including * multiple SCSI channels: * * PM2011B/9X - Entry Level ISA * PM2021A/9X - High Performance ISA * PM2012A Old EISA * PM2012B Old EISA * PM2022A/9X - Entry Level EISA * PM2122A/9X - High Performance EISA * PM2322A/9X - Extra High Performance EISA * PM3021 - SmartRAID Adapter for ISA * PM3222 - SmartRAID Adapter for EISA (PM3222W is 16-bit wide SCSI) * PM3224 - SmartRAID Adapter for PCI (PM3224W is 16-bit wide SCSI) * PM33340UW - SmartRAID Adapter for PCI ultra wide multichannel * * The above list is just an indication: as a matter of fact all DPT * boards using the EATA/DMA protocol are supported by this driver, * since they use exactely the same programming interface. * * The DPT PM2001 provides only the EATA/PIO interface and hence is not * supported by this driver. * * This code has been tested with up to 3 Distributed Processing Technology * PM2122A/9X (DPT SCSI BIOS v002.D1, firmware v05E.0) EISA controllers, * in any combination of private and shared IRQ. * PCI support has been tested using up to 2 DPT PM3224W (DPT SCSI BIOS * v003.D0, firmware v07G.0). * * DPT SmartRAID boards support "Hardware Array" - a group of disk drives * which are all members of the same RAID-0, RAID-1 or RAID-5 array implemented * in host adapter hardware. Hardware Arrays are fully compatible with this * driver, since they look to it as a single disk drive. * * WARNING: to create a RAID-0 "Hardware Array" you must select "Other Unix" * as the current OS in the DPTMGR "Initial System Installation" menu. * Otherwise RAID-0 is generated as an "Array Group" (i.e. software RAID-0), * which is not supported by the actual SCSI subsystem. * To get the "Array Group" functionality, the Linux MD driver must be used * instead of the DPT "Array Group" feature. * * Multiple ISA, EISA and PCI boards can be configured in the same system. * It is suggested to put all the EISA boards on the same IRQ level, all * the PCI boards on another IRQ level, while ISA boards cannot share * interrupts. * * If you configure multiple boards on the same IRQ, the interrupt must * be _level_ triggered (not _edge_ triggered). * * This driver detects EATA boards by probes at fixed port addresses, * so no BIOS32 or PCI BIOS support is required. * The suggested way to detect a generic EATA PCI board is to force on it * any unused EISA address, even if there are other controllers on the EISA * bus, or even if you system has no EISA bus at all. * Do not force any ISA address on EATA PCI boards. * * If PCI bios support is configured into the kernel, BIOS32 is used to * include in the list of i/o ports to be probed all the PCI SCSI controllers. * * Due to a DPT BIOS "feature", it might not be possible to force an EISA * address on more than a single DPT PCI board, so in this case you have to * let the PCI BIOS assign the addresses. * * The sequence of detection probes is: * * - ISA 0x1F0; * - PCI SCSI controllers (only if BIOS32 is available); * - EISA/PCI 0x1C88 through 0xFC88 (corresponding to EISA slots 1 to 15); * - ISA 0x170, 0x230, 0x330. * * The above list of detection probes can be totally replaced by the * boot command line option: "eata=port0,port1,port2,...", where the * port0, port1... arguments are ISA/EISA/PCI addresses to be probed. * For example using "eata=0x7410,0x7450,0x230", the driver probes * only the two PCI addresses 0x7410 and 0x7450 and the ISA address 0x230, * in this order; "eata=0" totally disables this driver. * * After the optional list of detection probes, other possible command line * options are: * * et:y force use of extended translation (255 heads, 63 sectors); * et:n use disk geometry detected by scsicam_bios_param; * rs:y reverse scan order while detecting PCI boards; * rs:n use BIOS order while detecting PCI boards; * 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); * mq:xx set the max queue depth to the value xx (2 <= xx <= 32). * * The default value is: "eata=lc:n,mq:16,tm:0,et:n,rs:n". * An example using the list of detection probes could be: * "eata=0x7410,0x230,lc:y,tm:2,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 eata io_port=0x7410,0x230 linked_comm=1 \ * max_queue_depth=4 ext_tran=0 tag_mode=2 \ * rev_scan=1 * * ---------------------------------------------------------------------------- * 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 extended translation option (et:y) is useful when using large physical * disks/arrays. It could also be useful when switching between Adaptec boards * and DPT boards without reformatting the disk. * When a boot disk is partitioned with extended translation, in order to * be able to boot it with a DPT board is could be necessary to add to * lilo.conf additional commands as in the following example: * * fix-table * disk=/dev/sda bios=0x80 sectors=63 heads=128 cylindres=546 * * where the above geometry should be replaced with the one reported at * power up by the DPT controller. * ---------------------------------------------------------------------------- * * The boards are named EATA0, EATA1,... according to the detection order. * * In order to support multiple ISA boards in a reliable way, * the driver sets host->wish_block = 1 for all ISA boards. */ #include <linux/string.h> #include <linux/kernel.h> #include <linux/ioport.h> #include <linux/delay.h> #include <linux/proc_fs.h> #include <linux/blkdev.h> #include <linux/interrupt.h> #include <linux/stat.h> #include <linux/pci.h> #include <linux/init.h> #include <linux/ctype.h> #include <linux/spinlock.h> #include <linux/dma-mapping.h> #include <linux/slab.h> #include <asm/byteorder.h> #include <asm/dma.h> #include <asm/io.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 eata2x_detect(struct scsi_host_template *); static int eata2x_release(struct Scsi_Host *); static int eata2x_queuecommand(struct Scsi_Host *, struct scsi_cmnd *); static int eata2x_eh_abort(struct scsi_cmnd *); static int eata2x_eh_host_reset(struct scsi_cmnd *); static int eata2x_bios_param(struct scsi_device *, struct block_device *, sector_t, int *); static int eata2x_slave_configure(struct scsi_device *); static struct scsi_host_template driver_template = { .name = "EATA/DMA 2.0x rev. 8.10.00 ", .detect = eata2x_detect, .release = eata2x_release, .queuecommand = eata2x_queuecommand, .eh_abort_handler = eata2x_eh_abort, .eh_host_reset_handler = eata2x_eh_host_reset, .bios_param = eata2x_bios_param, .slave_configure = eata2x_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 /* Subversion values */ #define ISA 0 #define ESA 1 #undef FORCE_CONFIG #undef DEBUG_LINKED_COMMANDS #undef DEBUG_DETECT #undef DEBUG_PCI_DETECT #undef DEBUG_INTERRUPT #undef DEBUG_RESET #undef DEBUG_GENERATE_ERRORS #undef DEBUG_GENERATE_ABORTS #undef DEBUG_GEOMETRY #define MAX_ISA 4 #define MAX_VESA 0 #define MAX_EISA 15 #define MAX_PCI 16 #define MAX_BOARDS (MAX_ISA + MAX_VESA + MAX_EISA + MAX_PCI) #define MAX_CHANNEL 4 #define MAX_LUN 32 #define MAX_TARGET 32 #define MAX_MAILBOXES 64 #define MAX_SGLIST 64 #define MAX_LARGE_SGLIST 122 #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 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_CMD 7 #define REG_STATUS 7 #define REG_AUX_STATUS 8 #define REG_DATA 0 #define REG_DATA2 1 #define REG_SEE 6 #define REG_LOW 2 #define REG_LM 3 #define REG_MID 4 #define REG_MSB 5 #define REGION_SIZE 9UL #define MAX_ISA_ADDR 0x03ff #define MIN_EISA_ADDR 0x1c88 #define MAX_EISA_ADDR 0xfc88 #define BSY_ASSERTED 0x80 #define DRQ_ASSERTED 0x08 #define ABSY_ASSERTED 0x01 #define IRQ_ASSERTED 0x02 #define READ_CONFIG_PIO 0xf0 #define SET_CONFIG_PIO 0xf1 #define SEND_CP_PIO 0xf2 #define RECEIVE_SP_PIO 0xf3 #define TRUNCATE_XFR_PIO 0xf4 #define RESET_PIO 0xf9 #define READ_CONFIG_DMA 0xfd #define SET_CONFIG_DMA 0xfe #define SEND_CP_DMA 0xff #define ASOK 0x00 #define ASST 0x01 #define YESNO(a) ((a) ? 'y' : 'n') #define TLDEV(type) ((type) == TYPE_DISK || (type) == TYPE_ROM) /* "EATA", in Big Endian format */ #define EATA_SIG_BE 0x45415441 /* Number of valid bytes in the board config structure for EATA 2.0x */ #define EATA_2_0A_SIZE 28 #define EATA_2_0B_SIZE 30 #define EATA_2_0C_SIZE 34 /* Board info structure */ struct eata_info { u_int32_t data_len; /* Number of valid bytes after this field */ u_int32_t sign; /* ASCII "EATA" signature */ #if defined(__BIG_ENDIAN_BITFIELD) unchar version : 4, : 4; unchar haaval : 1, ata : 1, drqvld : 1, dmasup : 1, morsup : 1, trnxfr : 1, tarsup : 1, ocsena : 1; #else unchar : 4, /* unused low nibble */ version : 4; /* EATA version, should be 0x1 */ unchar ocsena : 1, /* Overlap Command Support Enabled */ tarsup : 1, /* Target Mode Supported */ trnxfr : 1, /* Truncate Transfer Cmd NOT Necessary */ morsup : 1, /* More Supported */ dmasup : 1, /* DMA Supported */ drqvld : 1, /* DRQ Index (DRQX) is valid */ ata : 1, /* This is an ATA device */ haaval : 1; /* Host Adapter Address Valid */ #endif ushort cp_pad_len; /* Number of pad bytes after cp_len */ unchar host_addr[4]; /* Host Adapter SCSI ID for channels 3, 2, 1, 0 */ u_int32_t cp_len; /* Number of valid bytes in cp */ u_int32_t sp_len; /* Number of valid bytes in sp */ ushort queue_size; /* Max number of cp that can be queued */ ushort unused; ushort scatt_size; /* Max number of entries in scatter/gather table */ #if defined(__BIG_ENDIAN_BITFIELD) unchar drqx : 2, second : 1, irq_tr : 1, irq : 4; unchar sync; unchar : 4, res1 : 1, large_sg : 1, forcaddr : 1, isaena : 1; unchar max_chan : 3, max_id : 5; unchar max_lun; unchar eisa : 1, pci : 1, idquest : 1, m1 : 1, : 4; #else unchar irq : 4, /* Interrupt Request assigned to this controller */ irq_tr : 1, /* 0 for edge triggered, 1 for level triggered */ second : 1, /* 1 if this is a secondary (not primary) controller */ drqx : 2; /* DRQ Index (0=DMA0, 1=DMA7, 2=DMA6, 3=DMA5) */ unchar sync; /* 1 if scsi target id 7...0 is running sync scsi */ /* Structure extension defined in EATA 2.0B */ unchar isaena : 1, /* ISA i/o addressing is disabled/enabled */ forcaddr : 1, /* Port address has been forced */ large_sg : 1, /* 1 if large SG lists are supported */ res1 : 1, : 4; unchar max_id : 5, /* Max SCSI target ID number */ max_chan : 3; /* Max SCSI channel number on this board */ /* Structure extension defined in EATA 2.0C */ unchar max_lun; /* Max SCSI LUN number */ unchar : 4, m1 : 1, /* This is a PCI with an M1 chip installed */ idquest : 1, /* RAIDNUM returned is questionable */ pci : 1, /* This board is PCI */ eisa : 1; /* This board is EISA */ #endif unchar raidnum; /* Uniquely identifies this HBA in a system */ unchar notused; ushort ipad[247]; }; /* Board config structure */ struct eata_config { ushort len; /* Number of bytes following this field */ #if defined(__BIG_ENDIAN_BITFIELD) unchar : 4, tarena : 1, mdpena : 1, ocena : 1, edis : 1; #else unchar edis : 1, /* Disable EATA interface after config command */ ocena : 1, /* Overlapped Commands Enabled */ mdpena : 1, /* Transfer all Modified Data Pointer Messages */ tarena : 1, /* Target Mode Enabled for this controller */ : 4; #endif unchar cpad[511]; }; /* Returned status packet structure */ struct mssp { #if defined(__BIG_ENDIAN_BITFIELD) unchar eoc : 1, adapter_status : 7; #else unchar adapter_status : 7, /* State related to current command */ eoc : 1; /* End Of Command (1 = command completed) */ #endif unchar target_status; /* SCSI status received after data transfer */ unchar unused[2]; u_int32_t inv_res_len; /* Number of bytes not transferred */ u_int32_t cpp_index; /* Index of address set in cp */ char mess[12]; }; 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) unchar din : 1, dout : 1, interp : 1, : 1, sg : 1, reqsen :1, init : 1, sreset : 1; unchar sense_len; unchar unused[3]; unchar : 7, fwnest : 1; unchar : 5, hbaci : 1, iat : 1, phsunit : 1; unchar channel : 3, target : 5; unchar one : 1, dispri : 1, luntar : 1, lun : 5; #else unchar sreset :1, /* SCSI Bus Reset Signal should be asserted */ init :1, /* Re-initialize controller and self test */ reqsen :1, /* Transfer Request Sense Data to addr using DMA */ sg :1, /* Use Scatter/Gather */ :1, interp :1, /* The controller interprets cp, not the target */ dout :1, /* Direction of Transfer is Out (Host to Target) */ din :1; /* Direction of Transfer is In (Target to Host) */ unchar sense_len; /* Request Sense Length */ unchar unused[3]; unchar fwnest : 1, /* Send command to a component of an Array Group */ : 7; unchar phsunit : 1, /* Send to Target Physical Unit (bypass RAID) */ iat : 1, /* Inhibit Address Translation */ hbaci : 1, /* Inhibit HBA Caching for this command */ : 5; unchar target : 5, /* SCSI target ID */ channel : 3; /* SCSI channel number */ unchar lun : 5, /* SCSI logical unit number */ luntar : 1, /* This cp is for Target (not LUN) */ dispri : 1, /* Disconnect Privilege granted */ one : 1; /* 1 */ #endif unchar mess[3]; /* Massage to/from Target */ unchar cdb[12]; /* Command Descriptor Block */ u_int32_t data_len; /* If sg=0 Data Length, if sg=1 sglist length */ u_int32_t cpp_index; /* Index of address to be returned in sp */ u_int32_t data_address; /* If sg=0 Data Address, if sg=1 sglist address */ u_int32_t sp_dma_addr; /* Address where sp is DMA'ed when cp completes */ u_int32_t sense_addr; /* Address where Sense Data is DMA'ed on error */ /* Additional fields begin here. */ struct scsi_cmnd *SCpnt; /* 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 1 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 EISA/PCI */ unsigned char protocol_rev; /* EATA 2.0 rev., 'A' or 'B' or 'C' */ unsigned char is_pci; /* 1 is bus type is PCI */ struct pci_dev *pdev; /* pdev for PCI bus, NULL otherwise */ struct mssp *sp_cpu_addr; /* cpu addr for DMA buffer sp */ dma_addr_t sp_dma_addr; /* dma handle for DMA buffer sp */ struct mssp sp; /* Local copy of sp buffer */ }; static struct Scsi_Host *sh[MAX_BOARDS]; static const char *driver_name = "EATA"; 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, /* First ISA */ 0x1f0, /* Space for MAX_PCI ports possibly reported by PCI_BIOS */ SKIP, SKIP, SKIP, SKIP, SKIP, SKIP, SKIP, SKIP, SKIP, SKIP, SKIP, SKIP, SKIP, SKIP, SKIP, SKIP, /* MAX_EISA ports */ 0x1c88, 0x2c88, 0x3c88, 0x4c88, 0x5c88, 0x6c88, 0x7c88, 0x8c88, 0x9c88, 0xac88, 0xbc88, 0xcc88, 0xdc88, 0xec88, 0xfc88, /* Other (MAX_ISA - 1) ports */ 0x170, 0x230, 0x330, /* End of list */ 0x0 }; /* Device is Big Endian */ #define H2DEV(x) cpu_to_be32(x) #define DEV2H(x) be32_to_cpu(x) #define H2DEV16(x) cpu_to_be16(x) #define DEV2H16(x) be16_to_cpu(x) /* But transfer orientation from the 16 bit data register is Little Endian */ #define REG2H(x) le16_to_cpu(x) static irqreturn_t do_interrupt_handler(int, void *); static void flush_dev(struct scsi_device *, unsigned long, struct hostdata *, unsigned int); static int do_trace = 0; static int setup_done = 0; static int link_statistics; static int ext_tran = 0; static int rev_scan = 1; #if defined(CONFIG_SCSI_EATA_TAGGED_QUEUE) static int tag_mode = TAG_SIMPLE; #else static int tag_mode = TAG_DISABLED; #endif #if defined(CONFIG_SCSI_EATA_LINKED_COMMANDS) static int linked_comm = 1; #else static int linked_comm = 0; #endif #if defined(CONFIG_SCSI_EATA_MAX_TAGS) static int max_queue_depth = CONFIG_SCSI_EATA_MAX_TAGS; #else static int max_queue_depth = MAX_CMD_PER_LUN; #endif #if defined(CONFIG_ISA) static int isa_probe = 1; #else static int isa_probe = 0; #endif #if defined(CONFIG_EISA) static int eisa_probe = 1; #else static int eisa_probe = 0; #endif #if defined(CONFIG_PCI) static int pci_probe = 1; #else static int pci_probe = 0; #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(eata, boot_options, MAX_BOOT_OPTIONS_SIZE, 0); MODULE_PARM_DESC(eata, " equivalent to the \"eata=...\" kernel boot option." " Example: modprobe eata \"eata=0x7410,0x230,lc:y,tm:0,mq:4,ep:n\""); MODULE_AUTHOR("Dario Ballabio"); MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("EATA/DMA SCSI Driver"); #endif static int eata2x_slave_configure(struct scsi_device *dev) { int tqd, utqd; char *tag_suffix, *link_suffix; 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 = ""; sdev_printk(KERN_INFO, dev, "cmds/lun %d%s%s.\n", dev->queue_depth, link_suffix, tag_suffix); return 0; } static int wait_on_busy(unsigned long iobase, unsigned int loop) { while (inb(iobase + REG_AUX_STATUS) & ABSY_ASSERTED) { udelay(1L); if (--loop == 0) return 1; } return 0; } static int do_dma(unsigned long iobase, unsigned long addr, unchar cmd) { unsigned char *byaddr; unsigned long devaddr; if (wait_on_busy(iobase, (addr ? MAXLOOP * 100 : MAXLOOP))) return 1; if (addr) { devaddr = H2DEV(addr); byaddr = (unsigned char *)&devaddr; outb(byaddr[3], iobase + REG_LOW); outb(byaddr[2], iobase + REG_LM); outb(byaddr[1], iobase + REG_MID); outb(byaddr[0], iobase + REG_MSB); } outb(cmd, iobase + REG_CMD); return 0; } static int read_pio(unsigned long iobase, ushort * start, ushort * end) { unsigned int loop = MAXLOOP; ushort *p; for (p = start; p <= end; p++) { while (!(inb(iobase + REG_STATUS) & DRQ_ASSERTED)) { udelay(1L); if (--loop == 0) return 1; } loop = MAXLOOP; *p = REG2H(inw(iobase)); } return 0; } static struct pci_dev *get_pci_dev(unsigned long port_base) { #if defined(CONFIG_PCI) unsigned int addr; struct pci_dev *dev = NULL; while ((dev = pci_get_class(PCI_CLASS_STORAGE_SCSI << 8, dev))) { addr = pci_resource_start(dev, 0); #if defined(DEBUG_PCI_DETECT) printk("%s: get_pci_dev, bus %d, devfn 0x%x, addr 0x%x.\n", driver_name, dev->bus->number, dev->devfn, addr); #endif /* we are in so much trouble for a pci hotplug system with this driver * anyway, so doing this at least lets people unload the driver and not * cause memory problems, but in general this is a bad thing to do (this * driver needs to be converted to the proper PCI api someday... */ pci_dev_put(dev); if (addr + PCI_BASE_ADDRESS_0 == port_base) return dev; } #endif /* end CONFIG_PCI */ return NULL; } static void enable_pci_ports(void) { #if defined(CONFIG_PCI) struct pci_dev *dev = NULL; while ((dev = pci_get_class(PCI_CLASS_STORAGE_SCSI << 8, dev))) { #if defined(DEBUG_PCI_DETECT) printk("%s: enable_pci_ports, bus %d, devfn 0x%x.\n", driver_name, dev->bus->number, dev->devfn); #endif if (pci_enable_device(dev)) printk ("%s: warning, pci_enable_device failed, bus %d devfn 0x%x.\n", driver_name, dev->bus->number, dev->devfn); } #endif /* end CONFIG_PCI */ } static int port_detect(unsigned long port_base, unsigned int j, struct scsi_host_template *tpnt) { unsigned char irq, dma_channel, subversion, i, is_pci = 0; unsigned char protocol_rev; struct eata_info info; char *bus_type, dma_name[16]; struct pci_dev *pdev; /* Allowed DMA channels for ISA (0 indicates reserved) */ unsigned char dma_channel_table[4] = { 5, 6, 7, 0 }; struct Scsi_Host *shost; struct hostdata *ha; 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 (do_dma(port_base, 0, READ_CONFIG_PIO)) { #if defined(DEBUG_DETECT) printk("%s: detect, do_dma failed at 0x%03lx.\n", name, port_base); #endif goto freelock; } /* Read the info structure */ if (read_pio(port_base, (ushort *) & info, (ushort *) & info.ipad[0])) { #if defined(DEBUG_DETECT) printk("%s: detect, read_pio failed at 0x%03lx.\n", name, port_base); #endif goto freelock; } info.data_len = DEV2H(info.data_len); info.sign = DEV2H(info.sign); info.cp_pad_len = DEV2H16(info.cp_pad_len); info.cp_len = DEV2H(info.cp_len); info.sp_len = DEV2H(info.sp_len); info.scatt_size = DEV2H16(info.scatt_size); info.queue_size = DEV2H16(info.queue_size); /* Check the controller "EATA" signature */ if (info.sign != EATA_SIG_BE) { #if defined(DEBUG_DETECT) printk("%s: signature 0x%04x discarded.\n", name, info.sign); #endif goto freelock; } if (info.data_len < EATA_2_0A_SIZE) { printk ("%s: config structure size (%d bytes) too short, detaching.\n", name, info.data_len); goto freelock; } else if (info.data_len == EATA_2_0A_SIZE) protocol_rev = 'A'; else if (info.data_len == EATA_2_0B_SIZE) protocol_rev = 'B'; else protocol_rev = 'C'; if (protocol_rev != 'A' && info.forcaddr) { printk("%s: warning, port address has been forced.\n", name); bus_type = "PCI"; is_pci = 1; subversion = ESA; } else if (port_base > MAX_EISA_ADDR || (protocol_rev == 'C' && info.pci)) { bus_type = "PCI"; is_pci = 1; subversion = ESA; } else if (port_base >= MIN_EISA_ADDR || (protocol_rev == 'C' && info.eisa)) { bus_type = "EISA"; subversion = ESA; } else if (protocol_rev == 'C' && !info.eisa && !info.pci) { bus_type = "ISA"; subversion = ISA; } else if (port_base > MAX_ISA_ADDR) { bus_type = "PCI"; is_pci = 1; subversion = ESA; } else { bus_type = "ISA"; subversion = ISA; } if (!info.haaval || info.ata) { printk ("%s: address 0x%03lx, unusable %s board (%d%d), detaching.\n", name, port_base, bus_type, info.haaval, info.ata); goto freelock; } if (info.drqvld) { if (subversion == ESA) printk("%s: warning, weird %s board using DMA.\n", name, bus_type); subversion = ISA; dma_channel = dma_channel_table[3 - info.drqx]; } else { if (subversion == ISA) printk("%s: warning, weird %s board not using DMA.\n", name, bus_type); subversion = ESA; dma_channel = NO_DMA; } if (!info.dmasup) printk("%s: warning, DMA protocol support not asserted.\n", name); irq = info.irq; if (subversion == ESA && !info.irq_tr) printk ("%s: warning, LEVEL triggering is suggested for IRQ %u.\n", name, irq); if (is_pci) { pdev = get_pci_dev(port_base); if (!pdev) printk ("%s: warning, failed to get pci_dev structure.\n", name); } else pdev = NULL; if (pdev && (irq != pdev->irq)) { printk("%s: IRQ %u mapped to IO-APIC IRQ %u.\n", name, irq, pdev->irq); irq = pdev->irq; } /* Board detected, allocate its IRQ */ if (request_irq(irq, do_interrupt_handler, IRQF_DISABLED | ((subversion == ESA) ? IRQF_SHARED : 0), driver_name, (void *)&sha[j])) { printk("%s: unable to allocate IRQ %u, detaching.\n", name, irq); goto freelock; } if (subversion == ISA && request_dma(dma_channel, driver_name)) { printk("%s: unable to allocate DMA channel %u, detaching.\n", name, dma_channel); goto freeirq; } #if defined(FORCE_CONFIG) { struct eata_config *cf; dma_addr_t cf_dma_addr; cf = pci_alloc_consistent(pdev, sizeof(struct eata_config), &cf_dma_addr); if (!cf) { printk ("%s: config, pci_alloc_consistent failed, detaching.\n", name); goto freedma; } /* Set board configuration */ memset((char *)cf, 0, sizeof(struct eata_config)); cf->len = (ushort) H2DEV16((ushort) 510); cf->ocena = 1; if (do_dma(port_base, cf_dma_addr, SET_CONFIG_DMA)) { printk ("%s: busy timeout sending configuration, detaching.\n", name); pci_free_consistent(pdev, sizeof(struct eata_config), cf, cf_dma_addr); goto freedma; } } #endif spin_unlock_irq(&driver_lock); sh[j] = shost = scsi_register(tpnt, sizeof(struct hostdata)); spin_lock_irq(&driver_lock); if (shost == NULL) { printk("%s: unable to register host, detaching.\n", name); goto freedma; } shost->io_port = port_base; shost->unique_id = port_base; shost->n_io_port = REGION_SIZE; shost->dma_channel = dma_channel; shost->irq = irq; shost->sg_tablesize = (ushort) info.scatt_size; shost->this_id = (ushort) info.host_addr[3]; shost->can_queue = (ushort) info.queue_size; shost->cmd_per_lun = MAX_CMD_PER_LUN; ha = (struct hostdata *)shost->hostdata; memset(ha, 0, sizeof(struct hostdata)); ha->subversion = subversion; ha->protocol_rev = protocol_rev; ha->is_pci = is_pci; ha->pdev = pdev; ha->board_number = j; if (ha->subversion == ESA) shost->unchecked_isa_dma = 0; else { unsigned long flags; shost->unchecked_isa_dma = 1; 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); } strcpy(ha->board_name, name); /* DPT PM2012 does not allow to detect sg_tablesize correctly */ if (shost->sg_tablesize > MAX_SGLIST || shost->sg_tablesize < 2) { printk("%s: detect, wrong n. of SG lists %d, fixed.\n", ha->board_name, shost->sg_tablesize); shost->sg_tablesize = MAX_SGLIST; } /* DPT PM2012 does not allow to detect can_queue correctly */ if (shost->can_queue > MAX_MAILBOXES || shost->can_queue < 2) { printk("%s: detect, wrong n. of mbox %d, fixed.\n", ha->board_name, shost->can_queue); shost->can_queue = MAX_MAILBOXES; } if (protocol_rev != 'A') { if (info.max_chan > 0 && info.max_chan < MAX_CHANNEL) shost->max_channel = info.max_chan; if (info.max_id > 7 && info.max_id < MAX_TARGET) shost->max_id = info.max_id + 1; if (info.large_sg && shost->sg_tablesize == MAX_SGLIST) shost->sg_tablesize = MAX_LARGE_SGLIST; } if (protocol_rev == 'C') { if (info.max_lun > 7 && info.max_lun < MAX_LUN) shost->max_lun = info.max_lun + 1; } 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 < shost->can_queue; i++) ha->cp[i].cp_dma_addr = pci_map_single(ha->pdev, &ha->cp[i], sizeof(struct mscp), PCI_DMA_BIDIRECTIONAL); for (i = 0; i < shost->can_queue; i++) { size_t sz = shost->sg_tablesize *sizeof(struct sg_list); gfp_t gfp_mask = (shost->unchecked_isa_dma ? GFP_DMA : 0) | GFP_ATOMIC; ha->cp[i].sglist = kmalloc(sz, gfp_mask); if (!ha->cp[i].sglist) { printk ("%s: kmalloc SGlist failed, mbox %d, detaching.\n", ha->board_name, i); goto release; } } if (!(ha->sp_cpu_addr = pci_alloc_consistent(ha->pdev, sizeof(struct mssp), &ha->sp_dma_addr))) { printk("%s: pci_alloc_consistent failed, detaching.\n", ha->board_name); 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 ("EATA/DMA 2.0x: Copyright (C) 1994-2003 Dario Ballabio.\n"); printk ("%s config options -> tm:%d, lc:%c, mq:%d, rs:%c, et:%c, " "ip:%c, ep:%c, pp:%c.\n", driver_name, tag_mode, YESNO(linked_comm), max_queue_depth, YESNO(rev_scan), YESNO(ext_tran), YESNO(isa_probe), YESNO(eisa_probe), YESNO(pci_probe)); } printk("%s: 2.0%c, %s 0x%03lx, IRQ %u, %s, SG %d, MB %d.\n", ha->board_name, ha->protocol_rev, bus_type, (unsigned long)shost->io_port, shost->irq, dma_name, shost->sg_tablesize, shost->can_queue); if (shost->max_id > 8 || shost->max_lun > 8) printk ("%s: wide SCSI support enabled, max_id %u, max_lun %u.\n", ha->board_name, shost->max_id, shost->max_lun); for (i = 0; i <= shost->max_channel; i++) printk("%s: SCSI channel %u enabled, host target ID %d.\n", ha->board_name, i, info.host_addr[3 - i]); #if defined(DEBUG_DETECT) printk("%s: Vers. 0x%x, ocs %u, tar %u, trnxfr %u, more %u, SYNC 0x%x, " "sec. %u, infol %d, cpl %d spl %d.\n", name, info.version, info.ocsena, info.tarsup, info.trnxfr, info.morsup, info.sync, info.second, info.data_len, info.cp_len, info.sp_len); if (protocol_rev == 'B' || protocol_rev == 'C') printk("%s: isaena %u, forcaddr %u, max_id %u, max_chan %u, " "large_sg %u, res1 %u.\n", name, info.isaena, info.forcaddr, info.max_id, info.max_chan, info.large_sg, info.res1); if (protocol_rev == 'C') printk("%s: max_lun %u, m1 %u, idquest %u, pci %u, eisa %u, " "raidnum %u.\n", name, info.max_lun, info.m1, info.idquest, info.pci, info.eisa, info.raidnum); #endif if (ha->pdev) { pci_set_master(ha->pdev); if (pci_set_dma_mask(ha->pdev, DMA_BIT_MASK(32))) printk("%s: warning, pci_set_dma_mask failed.\n", ha->board_name); } return 1; 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 0; release: eata2x_release(shost); return 0; } 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 = 1; } while (cur && (pc = strchr(cur, ':'))) { int val = 0, c = *++pc; if (c == 'n' || c == 'N') val = 0; else if (c == 'y' || c == 'Y') val = 1; else val = (int)simple_strtoul(pc, NULL, 0); if (!strncmp(cur, "lc:", 3)) linked_comm = 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; else if (!strncmp(cur, "rs:", 3)) rev_scan = val; else if (!strncmp(cur, "ip:", 3)) isa_probe = val; else if (!strncmp(cur, "ep:", 3)) eisa_probe = val; else if (!strncmp(cur, "pp:", 3)) pci_probe = 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 void add_pci_ports(void) { #if defined(CONFIG_PCI) unsigned int addr, k; struct pci_dev *dev = NULL; for (k = 0; k < MAX_PCI; k++) { if (!(dev = pci_get_class(PCI_CLASS_STORAGE_SCSI << 8, dev))) break; if (pci_enable_device(dev)) { #if defined(DEBUG_PCI_DETECT) printk ("%s: detect, bus %d, devfn 0x%x, pci_enable_device failed.\n", driver_name, dev->bus->number, dev->devfn); #endif continue; } addr = pci_resource_start(dev, 0); #if defined(DEBUG_PCI_DETECT) printk("%s: detect, seq. %d, bus %d, devfn 0x%x, addr 0x%x.\n", driver_name, k, dev->bus->number, dev->devfn, addr); #endif /* Order addresses according to rev_scan value */ io_port[MAX_INT_PARAM + (rev_scan ? (MAX_PCI - k) : (1 + k))] = addr + PCI_BASE_ADDRESS_0; } pci_dev_put(dev); #endif /* end CONFIG_PCI */ } static int eata2x_detect(struct scsi_host_template *tpnt) { unsigned int j = 0, k; tpnt->proc_name = "eata2x"; 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 = 1; io_port[MAX_INT_PARAM] = 0; } #endif for (k = MAX_INT_PARAM; io_port[k]; k++) if (io_port[k] == SKIP) continue; else if (io_port[k] <= MAX_ISA_ADDR) { if (!isa_probe) io_port[k] = SKIP; } else if (io_port[k] >= MIN_EISA_ADDR && io_port[k] <= MAX_EISA_ADDR) { if (!eisa_probe) io_port[k] = SKIP; } if (pci_probe) { if (!setup_done) add_pci_ports(); else enable_pci_ports(); } 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, struct hostdata *ha) { unsigned int k, pci_dir; int count; struct scatterlist *sg; struct mscp *cpp; struct scsi_cmnd *SCpnt; cpp = &ha->cp[i]; SCpnt = cpp->SCpnt; pci_dir = SCpnt->sc_data_direction; if (SCpnt->sense_buffer) cpp->sense_addr = H2DEV(pci_map_single(ha->pdev, SCpnt->sense_buffer, SCSI_SENSE_BUFFERSIZE, PCI_DMA_FROMDEVICE)); cpp->sense_len = SCSI_SENSE_BUFFERSIZE; if (!scsi_sg_count(SCpnt)) { cpp->data_len = 0; return; } count = pci_map_sg(ha->pdev, scsi_sglist(SCpnt), scsi_sg_count(SCpnt), pci_dir); BUG_ON(!count); scsi_for_each_sg(SCpnt, sg, count, k) { cpp->sglist[k].address = H2DEV(sg_dma_address(sg)); cpp->sglist[k].num_bytes = H2DEV(sg_dma_len(sg)); } cpp->sg = 1; cpp->data_address = H2DEV(pci_map_single(ha->pdev, cpp->sglist, scsi_sg_count(SCpnt) * sizeof(struct sg_list), pci_dir)); cpp->data_len = H2DEV((scsi_sg_count(SCpnt) * sizeof(struct sg_list))); } static void unmap_dma(unsigned int i, struct hostdata *ha) { unsigned int pci_dir; struct mscp *cpp; struct scsi_cmnd *SCpnt; cpp = &ha->cp[i]; SCpnt = cpp->SCpnt; pci_dir = SCpnt->sc_data_direction; if (DEV2H(cpp->sense_addr)) pci_unmap_single(ha->pdev, DEV2H(cpp->sense_addr), DEV2H(cpp->sense_len), PCI_DMA_FROMDEVICE); if (scsi_sg_count(SCpnt)) pci_unmap_sg(ha->pdev, scsi_sglist(SCpnt), scsi_sg_count(SCpnt), pci_dir); if (!DEV2H(cpp->data_len)) pci_dir = PCI_DMA_BIDIRECTIONAL; if (DEV2H(cpp->data_address)) pci_unmap_single(ha->pdev, DEV2H(cpp->data_address), DEV2H(cpp->data_len), pci_dir); } static void sync_dma(unsigned int i, struct hostdata *ha) { unsigned int pci_dir; struct mscp *cpp; struct scsi_cmnd *SCpnt; cpp = &ha->cp[i]; SCpnt = cpp->SCpnt; pci_dir = SCpnt->sc_data_direction; if (DEV2H(cpp->sense_addr)) pci_dma_sync_single_for_cpu(ha->pdev, DEV2H(cpp->sense_addr), DEV2H(cpp->sense_len), PCI_DMA_FROMDEVICE); if (scsi_sg_count(SCpnt)) pci_dma_sync_sg_for_cpu(ha->pdev, scsi_sglist(SCpnt), scsi_sg_count(SCpnt), pci_dir); if (!DEV2H(cpp->data_len)) pci_dir = PCI_DMA_BIDIRECTIONAL; if (DEV2H(cpp->data_address)) pci_dma_sync_single_for_cpu(ha->pdev, DEV2H(cpp->data_address), DEV2H(cpp->data_len), pci_dir); } static void scsi_to_dev_dir(unsigned int i, struct hostdata *ha) { 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 = &ha->cp[i]; SCpnt = cpp->SCpnt; if (SCpnt->sc_data_direction == DMA_FROM_DEVICE) { cpp->din = 1; cpp->dout = 0; return; } else if (SCpnt->sc_data_direction == DMA_TO_DEVICE) { cpp->din = 0; cpp->dout = 1; return; } else if (SCpnt->sc_data_direction == DMA_NONE) { cpp->din = 0; cpp->dout = 0; return; } if (SCpnt->sc_data_direction != DMA_BIDIRECTIONAL) panic("%s: qcomm, invalid SCpnt->sc_data_direction.\n", ha->board_name); for (k = 0; k < ARRAY_SIZE(data_out_cmds); k++) if (SCpnt->cmnd[0] == data_out_cmds[k]) { cpp->dout = 1; break; } if ((cpp->din = !cpp->dout)) for (k = 0; k < ARRAY_SIZE(data_none_cmds); k++) if (SCpnt->cmnd[0] == data_none_cmds[k]) { cpp->din = 0; break; } } static int eata2x_queuecommand_lck(struct scsi_cmnd *SCpnt, void (*done) (struct scsi_cmnd *)) { struct Scsi_Host *shost = SCpnt->device->host; struct hostdata *ha = (struct hostdata *)shost->hostdata; unsigned int i, k; struct mscp *cpp; if (SCpnt->host_scribble) panic("%s: qcomm, pid %ld, SCpnt %p already active.\n", ha->board_name, SCpnt->serial_number, SCpnt); /* i is the mailbox number, look for the first free mailbox starting from last_cp_used */ i = ha->last_cp_used + 1; for (k = 0; k < shost->can_queue; k++, i++) { if (i >= shost->can_queue) i = 0; if (ha->cp_stat[i] == FREE) { ha->last_cp_used = i; break; } } if (k == shost->can_queue) { printk("%s: qcomm, no free mailbox.\n", ha->board_name); return 1; } /* Set pointer to control packet structure */ cpp = &ha->cp[i]; memset(cpp, 0, sizeof(struct mscp) - CP_TAIL_SIZE); /* Set pointer to status packet structure, Big Endian format */ cpp->sp_dma_addr = H2DEV(ha->sp_dma_addr); SCpnt->scsi_done = done; cpp->cpp_index = i; SCpnt->host_scribble = (unsigned char *)&cpp->cpp_index; if (do_trace) scmd_printk(KERN_INFO, SCpnt, "qcomm, mbox %d, pid %ld.\n", i, SCpnt->serial_number); cpp->reqsen = 1; cpp->dispri = 1; #if 0 if (SCpnt->device->type == TYPE_TAPE) cpp->hbaci = 1; #endif cpp->one = 1; cpp->channel = SCpnt->device->channel; cpp->target = SCpnt->device->id; cpp->lun = SCpnt->device->lun; cpp->SCpnt = SCpnt; memcpy(cpp->cdb, SCpnt->cmnd, SCpnt->cmd_len); /* Use data transfer direction SCpnt->sc_data_direction */ scsi_to_dev_dir(i, ha); /* Map DMA buffers and SG list */ map_dma(i, ha); if (linked_comm && SCpnt->device->queue_depth > 2 && TLDEV(SCpnt->device->type)) { ha->cp_stat[i] = READY; flush_dev(SCpnt->device, blk_rq_pos(SCpnt->request), ha, 0); return 0; } /* Send control packet to the board */ if (do_dma(shost->io_port, cpp->cp_dma_addr, SEND_CP_DMA)) { unmap_dma(i, ha); SCpnt->host_scribble = NULL; scmd_printk(KERN_INFO, SCpnt, "qcomm, pid %ld, adapter busy.\n", SCpnt->serial_number); return 1; } ha->cp_stat[i] = IN_USE; return 0; } static DEF_SCSI_QCMD(eata2x_queuecommand) static int eata2x_eh_abort(struct scsi_cmnd *SCarg) { struct Scsi_Host *shost = SCarg->device->host; struct hostdata *ha = (struct hostdata *)shost->hostdata; unsigned int i; if (SCarg->host_scribble == NULL) { scmd_printk(KERN_INFO, SCarg, "abort, pid %ld inactive.\n", SCarg->serial_number); return SUCCESS; } i = *(unsigned int *)SCarg->host_scribble; scmd_printk(KERN_WARNING, SCarg, "abort, mbox %d, pid %ld.\n", i, SCarg->serial_number); if (i >= shost->can_queue) panic("%s: abort, invalid SCarg->host_scribble.\n", ha->board_name); if (wait_on_busy(shost->io_port, MAXLOOP)) { printk("%s: abort, timeout error.\n", ha->board_name); return FAILED; } if (ha->cp_stat[i] == FREE) { printk("%s: abort, mbox %d is free.\n", ha->board_name, i); return SUCCESS; } if (ha->cp_stat[i] == IN_USE) { printk("%s: abort, mbox %d is in use.\n", ha->board_name, i); if (SCarg != ha->cp[i].SCpnt) panic("%s: abort, mbox %d, SCarg %p, cp SCpnt %p.\n", ha->board_name, i, SCarg, ha->cp[i].SCpnt); if (inb(shost->io_port + REG_AUX_STATUS) & IRQ_ASSERTED) printk("%s: abort, mbox %d, interrupt pending.\n", ha->board_name, i); return FAILED; } if (ha->cp_stat[i] == IN_RESET) { printk("%s: abort, mbox %d is in reset.\n", ha->board_name, i); return FAILED; } if (ha->cp_stat[i] == LOCKED) { printk("%s: abort, mbox %d is locked.\n", ha->board_name, i); return SUCCESS; } if (ha->cp_stat[i] == READY || ha->cp_stat[i] == ABORTING) { unmap_dma(i, ha); SCarg->result = DID_ABORT << 16; SCarg->host_scribble = NULL; ha->cp_stat[i] = FREE; printk("%s, abort, mbox %d ready, DID_ABORT, pid %ld done.\n", ha->board_name, i, SCarg->serial_number); SCarg->scsi_done(SCarg); return SUCCESS; } panic("%s: abort, mbox %d, invalid cp_stat.\n", ha->board_name, i); } static int eata2x_eh_host_reset(struct scsi_cmnd *SCarg) { unsigned int i, time, k, c, limit = 0; int arg_done = 0; struct scsi_cmnd *SCpnt; struct Scsi_Host *shost = SCarg->device->host; struct hostdata *ha = (struct hostdata *)shost->hostdata; scmd_printk(KERN_INFO, SCarg, "reset, enter, pid %ld.\n", SCarg->serial_number); spin_lock_irq(shost->host_lock); if (SCarg->host_scribble == NULL) printk("%s: reset, pid %ld inactive.\n", ha->board_name, SCarg->serial_number); if (ha->in_reset) { printk("%s: reset, exit, already in reset.\n", ha->board_name); spin_unlock_irq(shost->host_lock); return FAILED; } if (wait_on_busy(shost->io_port, MAXLOOP)) { printk("%s: reset, exit, timeout error.\n", ha->board_name); spin_unlock_irq(shost->host_lock); return FAILED; } ha->retries = 0; for (c = 0; c <= shost->max_channel; c++) for (k = 0; k < shost->max_id; k++) { ha->target_redo[k][c] = 1; ha->target_to[k][c] = 0; } for (i = 0; i < shost->can_queue; i++) { if (ha->cp_stat[i] == FREE) continue; if (ha->cp_stat[i] == LOCKED) { ha->cp_stat[i] = FREE; printk("%s: reset, locked mbox %d forced free.\n", ha->board_name, i); continue; } if (!(SCpnt = ha->cp[i].SCpnt)) panic("%s: reset, mbox %d, SCpnt == NULL.\n", ha->board_name, i); if (ha->cp_stat[i] == READY || ha->cp_stat[i] == ABORTING) { ha->cp_stat[i] = ABORTING; printk("%s: reset, mbox %d aborting, pid %ld.\n", ha->board_name, i, SCpnt->serial_number); } else { ha->cp_stat[i] = IN_RESET; printk("%s: reset, mbox %d in reset, pid %ld.\n", ha->board_name, i, SCpnt->serial_number); } if (SCpnt->host_scribble == NULL) panic("%s: reset, mbox %d, garbled SCpnt.\n", ha->board_name, i); if (*(unsigned int *)SCpnt->host_scribble != i) panic("%s: reset, mbox %d, index mismatch.\n", ha->board_name, i); if (SCpnt->scsi_done == NULL) panic("%s: reset, mbox %d, SCpnt->scsi_done == NULL.\n", ha->board_name, i); if (SCpnt == SCarg) arg_done = 1; } if (do_dma(shost->io_port, 0, RESET_PIO)) { printk("%s: reset, cannot reset, timeout error.\n", ha->board_name); spin_unlock_irq(shost->host_lock); return FAILED; } printk("%s: reset, board reset done, enabling interrupts.\n", ha->board_name); #if defined(DEBUG_RESET) do_trace = 1; #endif ha->in_reset = 1; spin_unlock_irq(shost->host_lock); /* FIXME: use a sleep instead */ time = jiffies; while ((jiffies - time) < (10 * HZ) && limit++ < 200000) udelay(100L); spin_lock_irq(shost->host_lock); printk("%s: reset, interrupts disabled, loops %d.\n", ha->board_name, limit); for (i = 0; i < shost->can_queue; i++) { if (ha->cp_stat[i] == IN_RESET) { SCpnt = ha->cp[i].SCpnt; unmap_dma(i, ha); SCpnt->result = DID_RESET << 16; SCpnt->host_scribble = NULL; /* This mailbox is still waiting for its interrupt */ ha->cp_stat[i] = LOCKED; printk ("%s, reset, mbox %d locked, DID_RESET, pid %ld done.\n", ha->board_name, i, SCpnt->serial_number); } else if (ha->cp_stat[i] == ABORTING) { SCpnt = ha->cp[i].SCpnt; unmap_dma(i, ha); SCpnt->result = DID_RESET << 16; SCpnt->host_scribble = NULL; /* This mailbox was never queued to the adapter */ ha->cp_stat[i] = FREE; printk ("%s, reset, mbox %d aborting, DID_RESET, pid %ld done.\n", ha->board_name, i, SCpnt->serial_number); } else /* Any other mailbox has already been set free by interrupt */ continue; SCpnt->scsi_done(SCpnt); } ha->in_reset = 0; do_trace = 0; if (arg_done) printk("%s: reset, exit, pid %ld done.\n", ha->board_name, SCarg->serial_number); else printk("%s: reset, exit.\n", ha->board_name); spin_unlock_irq(shost->host_lock); return SUCCESS; } int eata2x_bios_param(struct scsi_device *sdev, struct block_device *bdev, sector_t capacity, int *dkinfo) { unsigned int size = capacity; 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 0; } 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(struct hostdata *ha, 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 = 0, s = 1, r = 1; unsigned int input_only = 1, overlap = 0; 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 0; for (n = 0; n < n_ready; n++) { k = il[n]; cpp = &ha->cp[k]; SCpnt = cpp->SCpnt; if (!cpp->din) input_only = 0; if (blk_rq_pos(SCpnt->request) < minsec) minsec = blk_rq_pos(SCpnt->request); if (blk_rq_pos(SCpnt->request) > maxsec) maxsec = blk_rq_pos(SCpnt->request); sl[n] = blk_rq_pos(SCpnt->request); ioseek += blk_rq_sectors(SCpnt->request); if (!n) continue; if (sl[n] < sl[n - 1]) s = 0; if (sl[n] > sl[n - 1]) r = 0; 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 = 1; if (ioseek > ((maxsec - minsec) / 2)) rev = 0; 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 = &ha->cp[k]; SCpnt = cpp->SCpnt; ll[n] = blk_rq_sectors(SCpnt->request); pl[n] = SCpnt->serial_number; if (!n) continue; if ((sl[n] == sl[n - 1]) || (!rev && ((sl[n - 1] + ll[n - 1]) > sl[n])) || (rev && ((sl[n] + ll[n]) > sl[n - 1]))) overlap = 1; } if (overlap) sort(pl, il, n_ready, 0); 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 = &ha->cp[k]; SCpnt = cpp->SCpnt; scmd_printk(KERN_INFO, SCpnt, "%s pid %ld mb %d fc %d nr %d sec %ld ns %u" " cur %ld s:%c r:%c rev:%c in:%c ov:%c xd %d.\n", (ihdlr ? "ihdlr" : "qcomm"), SCpnt->serial_number, k, flushcount, n_ready, blk_rq_pos(SCpnt->request), blk_rq_sectors(SCpnt->request), cursec, YESNO(s), YESNO(r), YESNO(rev), YESNO(input_only), YESNO(overlap), cpp->din); } #endif return overlap; } static void flush_dev(struct scsi_device *dev, unsigned long cursec, struct hostdata *ha, unsigned int ihdlr) { struct scsi_cmnd *SCpnt; struct mscp *cpp; unsigned int k, n, n_ready = 0, il[MAX_MAILBOXES]; for (k = 0; k < dev->host->can_queue; k++) { if (ha->cp_stat[k] != READY && ha->cp_stat[k] != IN_USE) continue; cpp = &ha->cp[k]; SCpnt = cpp->SCpnt; if (SCpnt->device != dev) continue; if (ha->cp_stat[k] == IN_USE) return; il[n_ready++] = k; } if (reorder(ha, cursec, ihdlr, il, n_ready)) n_ready = 1; for (n = 0; n < n_ready; n++) { k = il[n]; cpp = &ha->cp[k]; SCpnt = cpp->SCpnt; if (do_dma(dev->host->io_port, cpp->cp_dma_addr, SEND_CP_DMA)) { scmd_printk(KERN_INFO, SCpnt, "%s, pid %ld, mbox %d, adapter" " busy, will abort.\n", (ihdlr ? "ihdlr" : "qcomm"), SCpnt->serial_number, k); ha->cp_stat[k] = ABORTING; continue; } ha->cp_stat[k] = IN_USE; } } static irqreturn_t ihdlr(struct Scsi_Host *shost) { struct scsi_cmnd *SCpnt; unsigned int i, k, c, status, tstatus, reg; struct mssp *spp; struct mscp *cpp; struct hostdata *ha = (struct hostdata *)shost->hostdata; int irq = shost->irq; /* Check if this board need to be serviced */ if (!(inb(shost->io_port + REG_AUX_STATUS) & IRQ_ASSERTED)) goto none; ha->iocount++; if (do_trace) printk("%s: ihdlr, enter, irq %d, count %d.\n", ha->board_name, irq, ha->iocount); /* Check if this board is still busy */ if (wait_on_busy(shost->io_port, 20 * MAXLOOP)) { reg = inb(shost->io_port + REG_STATUS); printk ("%s: ihdlr, busy timeout error, irq %d, reg 0x%x, count %d.\n", ha->board_name, irq, reg, ha->iocount); goto none; } spp = &ha->sp; /* Make a local copy just before clearing the interrupt indication */ memcpy(spp, ha->sp_cpu_addr, sizeof(struct mssp)); /* Clear the completion flag and cp pointer on the dynamic copy of sp */ memset(ha->sp_cpu_addr, 0, sizeof(struct mssp)); /* Read the status register to clear the interrupt indication */ reg = inb(shost->io_port + REG_STATUS); #if defined (DEBUG_INTERRUPT) { unsigned char *bytesp; int cnt; bytesp = (unsigned char *)spp; if (ha->iocount < 200) { printk("sp[] ="); for (cnt = 0; cnt < 15; cnt++) printk(" 0x%x", bytesp[cnt]); printk("\n"); } } #endif /* Reject any sp with supspect data */ if (spp->eoc == 0 && ha->iocount > 1) printk ("%s: ihdlr, spp->eoc == 0, irq %d, reg 0x%x, count %d.\n", ha->board_name, irq, reg, ha->iocount); if (spp->cpp_index < 0 || spp->cpp_index >= shost->can_queue) printk ("%s: ihdlr, bad spp->cpp_index %d, irq %d, reg 0x%x, count %d.\n", ha->board_name, spp->cpp_index, irq, reg, ha->iocount); if (spp->eoc == 0 || spp->cpp_index < 0 || spp->cpp_index >= shost->can_queue) goto handled; /* Find the mailbox to be serviced on this board */ i = spp->cpp_index; cpp = &(ha->cp[i]); #if defined(DEBUG_GENERATE_ABORTS) if ((ha->iocount > 500) && ((ha->iocount % 500) < 3)) goto handled; #endif if (ha->cp_stat[i] == IGNORE) { ha->cp_stat[i] = FREE; goto handled; } else if (ha->cp_stat[i] == LOCKED) { ha->cp_stat[i] = FREE; printk("%s: ihdlr, mbox %d unlocked, count %d.\n", ha->board_name, i, ha->iocount); goto handled; } else if (ha->cp_stat[i] == FREE) { printk("%s: ihdlr, mbox %d is free, count %d.\n", ha->board_name, i, ha->iocount); goto handled; } else if (ha->cp_stat[i] == IN_RESET) printk("%s: ihdlr, mbox %d is in reset.\n", ha->board_name, i); else if (ha->cp_stat[i] != IN_USE) panic("%s: ihdlr, mbox %d, invalid cp_stat: %d.\n", ha->board_name, i, ha->cp_stat[i]); ha->cp_stat[i] = FREE; SCpnt = cpp->SCpnt; if (SCpnt == NULL) panic("%s: ihdlr, mbox %d, SCpnt == NULL.\n", ha->board_name, i); if (SCpnt->host_scribble == NULL) panic("%s: ihdlr, mbox %d, pid %ld, SCpnt %p garbled.\n", ha->board_name, i, SCpnt->serial_number, SCpnt); if (*(unsigned int *)SCpnt->host_scribble != i) panic("%s: ihdlr, mbox %d, pid %ld, index mismatch %d.\n", ha->board_name, i, SCpnt->serial_number, *(unsigned int *)SCpnt->host_scribble); sync_dma(i, ha); if (linked_comm && SCpnt->device->queue_depth > 2 && TLDEV(SCpnt->device->type)) flush_dev(SCpnt->device, blk_rq_pos(SCpnt->request), ha, 1); tstatus = status_byte(spp->target_status); #if defined(DEBUG_GENERATE_ERRORS) if ((ha->iocount > 500) && ((ha->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 && ha->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) ha->target_redo[SCpnt->device->id][SCpnt->device-> channel] = 0; if (spp->target_status && SCpnt->device->type == TYPE_DISK && (!(tstatus == CHECK_CONDITION && ha->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", ha->board_name, SCpnt->device->channel, SCpnt->device->id, SCpnt->device->lun, SCpnt->serial_number, spp->target_status, SCpnt->sense_buffer[2]); ha->target_to[SCpnt->device->id][SCpnt->device->channel] = 0; if (ha->last_retried_pid == SCpnt->serial_number) ha->retries = 0; break; case ASST: /* Selection Time Out */ case 0x02: /* Command Time Out */ if (ha->target_to[SCpnt->device->id][SCpnt->device->channel] > 1) status = DID_ERROR << 16; else { status = DID_TIME_OUT << 16; ha->target_to[SCpnt->device->id][SCpnt->device-> channel]++; } break; /* Perform a limited number of internal retries */ case 0x03: /* SCSI Bus Reset Received */ case 0x04: /* Initial Controller Power-up */ for (c = 0; c <= shost->max_channel; c++) for (k = 0; k < shost->max_id; k++) ha->target_redo[k][c] = 1; if (SCpnt->device->type != TYPE_TAPE && ha->retries < MAX_INTERNAL_RETRIES) { #if defined(DID_SOFT_ERROR) status = DID_SOFT_ERROR << 16; #else status = DID_BUS_BUSY << 16; #endif ha->retries++; ha->last_retried_pid = SCpnt->serial_number; } else status = DID_ERROR << 16; break; case 0x05: /* Unexpected Bus Phase */ case 0x06: /* Unexpected Bus Free */ case 0x07: /* Bus Parity Error */ case 0x08: /* SCSI Hung */ case 0x09: /* Unexpected Message Reject */ case 0x0a: /* SCSI Bus Reset Stuck */ case 0x0b: /* Auto Request-Sense Failed */ case 0x0c: /* Controller Ram Parity Error */ 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 && ha->iocount > 1000) || (spp->adapter_status != ASOK && spp->adapter_status != ASST && ha->iocount <= 1000) || do_trace || msg_byte(spp->target_status)) #endif scmd_printk(KERN_INFO, SCpnt, "ihdlr, mbox %2d, err 0x%x:%x," " pid %ld, reg 0x%x, count %d.\n", i, spp->adapter_status, spp->target_status, SCpnt->serial_number, reg, ha->iocount); unmap_dma(i, ha); /* 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", ha->board_name, irq, ha->iocount); handled: return IRQ_HANDLED; none: return IRQ_NONE; } static irqreturn_t do_interrupt_handler(int dummy, void *shap) { struct Scsi_Host *shost; 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; shost = sh[j]; spin_lock_irqsave(shost->host_lock, spin_flags); ret = ihdlr(shost); spin_unlock_irqrestore(shost->host_lock, spin_flags); return ret; } static int eata2x_release(struct Scsi_Host *shost) { struct hostdata *ha = (struct hostdata *)shost->hostdata; unsigned int i; for (i = 0; i < shost->can_queue; i++) kfree((&ha->cp[i])->sglist); for (i = 0; i < shost->can_queue; i++) pci_unmap_single(ha->pdev, ha->cp[i].cp_dma_addr, sizeof(struct mscp), PCI_DMA_BIDIRECTIONAL); if (ha->sp_cpu_addr) pci_free_consistent(ha->pdev, sizeof(struct mssp), ha->sp_cpu_addr, ha->sp_dma_addr); free_irq(shost->irq, &sha[ha->board_number]); if (shost->dma_channel != NO_DMA) free_dma(shost->dma_channel); release_region(shost->io_port, shost->n_io_port); scsi_unregister(shost); return 0; } #include "scsi_module.c" #ifndef MODULE __setup("eata=", option_setup); #endif /* end MODULE */