diff options
| author | Christoph Hellwig <hch@lst.de> | 2016-09-19 08:50:47 -0700 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2016-09-26 20:49:24 -0400 |
| commit | 9b3a34fb2125141720515b79ed2228545645a7bc (patch) | |
| tree | 7a16ab1bb6b65e43a5cb65ec468974160c8afee6 /drivers/scsi | |
| parent | 086acff2cf8a6a41f533e5da5f51923db5f68df4 (diff) | |
| download | linux-9b3a34fb2125141720515b79ed2228545645a7bc.tar.gz linux-9b3a34fb2125141720515b79ed2228545645a7bc.tar.bz2 linux-9b3a34fb2125141720515b79ed2228545645a7bc.zip | |
scsi: wd7000: remove from tree
The driver has not seen any maintainer activity or other work that
wasn't tree wide conversion or clenaups in the entire history of
the git tree.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinicke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi')
| -rw-r--r-- | drivers/scsi/Kconfig | 12 | ||||
| -rw-r--r-- | drivers/scsi/Makefile | 1 | ||||
| -rw-r--r-- | drivers/scsi/wd7000.c | 1657 |
3 files changed, 0 insertions, 1670 deletions
diff --git a/drivers/scsi/Kconfig b/drivers/scsi/Kconfig index 75de1dc725a1..15c6e9f2162d 100644 --- a/drivers/scsi/Kconfig +++ b/drivers/scsi/Kconfig @@ -396,18 +396,6 @@ config SCSI_3W_SAS Please read the comments at the top of <file:drivers/scsi/3w-sas.c>. -config SCSI_7000FASST - tristate "7000FASST SCSI support" - depends on ISA && SCSI && ISA_DMA_API - select CHECK_SIGNATURE - help - This driver supports the Western Digital 7000 SCSI host adapter - family. Some information is in the source: - <file:drivers/scsi/wd7000.c>. - - To compile this driver as a module, choose M here: the - module will be called wd7000. - config SCSI_ACARD tristate "ACARD SCSI support" depends on PCI && SCSI diff --git a/drivers/scsi/Makefile b/drivers/scsi/Makefile index fc0d9b8f2bdf..d870cc51d0bb 100644 --- a/drivers/scsi/Makefile +++ b/drivers/scsi/Makefile @@ -99,7 +99,6 @@ obj-$(CONFIG_SCSI_DTC3280) += dtc.o obj-$(CONFIG_SCSI_SYM53C8XX_2) += sym53c8xx_2/ obj-$(CONFIG_SCSI_ZALON) += zalon7xx.o obj-$(CONFIG_SCSI_EATA_PIO) += eata_pio.o -obj-$(CONFIG_SCSI_7000FASST) += wd7000.o obj-$(CONFIG_SCSI_EATA) += eata.o obj-$(CONFIG_SCSI_DC395x) += dc395x.o obj-$(CONFIG_SCSI_AM53C974) += esp_scsi.o am53c974.o diff --git a/drivers/scsi/wd7000.c b/drivers/scsi/wd7000.c deleted file mode 100644 index 409f959845c4..000000000000 --- a/drivers/scsi/wd7000.c +++ /dev/null @@ -1,1657 +0,0 @@ -/* $Id: $ - * linux/drivers/scsi/wd7000.c - * - * Copyright (C) 1992 Thomas Wuensche - * closely related to the aha1542 driver from Tommy Thorn - * ( as close as different hardware allows on a lowlevel-driver :-) ) - * - * Revised (and renamed) by John Boyd <boyd@cis.ohio-state.edu> to - * accommodate Eric Youngdale's modifications to scsi.c. Nov 1992. - * - * Additional changes to support scatter/gather. Dec. 1992. tw/jb - * - * No longer tries to reset SCSI bus at boot (it wasn't working anyway). - * Rewritten to support multiple host adapters. - * Miscellaneous cleanup. - * So far, still doesn't do reset or abort correctly, since I have no idea - * how to do them with this board (8^(. Jan 1994 jb - * - * This driver now supports both of the two standard configurations (per - * the 3.36 Owner's Manual, my latest reference) by the same method as - * before; namely, by looking for a BIOS signature. Thus, the location of - * the BIOS signature determines the board configuration. Until I have - * time to do something more flexible, users should stick to one of the - * following: - * - * Standard configuration for single-adapter systems: - * - BIOS at CE00h - * - I/O base address 350h - * - IRQ level 15 - * - DMA channel 6 - * Standard configuration for a second adapter in a system: - * - BIOS at C800h - * - I/O base address 330h - * - IRQ level 11 - * - DMA channel 5 - * - * Anyone who can recompile the kernel is welcome to add others as need - * arises, but unpredictable results may occur if there are conflicts. - * In any event, if there are multiple adapters in a system, they MUST - * use different I/O bases, IRQ levels, and DMA channels, since they will be - * indistinguishable (and in direct conflict) otherwise. - * - * As a point of information, the NO_OP command toggles the CMD_RDY bit - * of the status port, and this fact could be used as a test for the I/O - * base address (or more generally, board detection). There is an interrupt - * status port, so IRQ probing could also be done. I suppose the full - * DMA diagnostic could be used to detect the DMA channel being used. I - * haven't done any of this, though, because I think there's too much of - * a chance that such explorations could be destructive, if some other - * board's resources are used inadvertently. So, call me a wimp, but I - * don't want to try it. The only kind of exploration I trust is memory - * exploration, since it's more certain that reading memory won't be - * destructive. - * - * More to my liking would be a LILO boot command line specification, such - * as is used by the aha152x driver (and possibly others). I'll look into - * it, as I have time... - * - * I get mail occasionally from people who either are using or are - * considering using a WD7000 with Linux. There is a variety of - * nomenclature describing WD7000's. To the best of my knowledge, the - * following is a brief summary (from an old WD doc - I don't work for - * them or anything like that): - * - * WD7000-FASST2: This is a WD7000 board with the real-mode SST ROM BIOS - * installed. Last I heard, the BIOS was actually done by Columbia - * Data Products. The BIOS is only used by this driver (and thus - * by Linux) to identify the board; none of it can be executed under - * Linux. - * - * WD7000-ASC: This is the original adapter board, with or without BIOS. - * The board uses a WD33C93 or WD33C93A SBIC, which in turn is - * controlled by an onboard Z80 processor. The board interface - * visible to the host CPU is defined effectively by the Z80's - * firmware, and it is this firmware's revision level that is - * determined and reported by this driver. (The version of the - * on-board BIOS is of no interest whatsoever.) The host CPU has - * no access to the SBIC; hence the fact that it is a WD33C93 is - * also of no interest to this driver. - * - * WD7000-AX: - * WD7000-MX: - * WD7000-EX: These are newer versions of the WD7000-ASC. The -ASC is - * largely built from discrete components; these boards use more - * integration. The -AX is an ISA bus board (like the -ASC), - * the -MX is an MCA (i.e., PS/2) bus board), and the -EX is an - * EISA bus board. - * - * At the time of my documentation, the -?X boards were "future" products, - * and were not yet available. However, I vaguely recall that Thomas - * Wuensche had an -AX, so I believe at least it is supported by this - * driver. I have no personal knowledge of either -MX or -EX boards. - * - * P.S. Just recently, I've discovered (directly from WD and Future - * Domain) that all but the WD7000-EX have been out of production for - * two years now. FD has production rights to the 7000-EX, and are - * producing it under a new name, and with a new BIOS. If anyone has - * one of the FD boards, it would be nice to come up with a signature - * for it. - * J.B. Jan 1994. - * - * - * Revisions by Miroslav Zagorac <zaga@fly.cc.fer.hr> - * - * 08/24/1996. - * - * Enhancement for wd7000_detect function has been made, so you don't have - * to enter BIOS ROM address in initialisation data (see struct Config). - * We cannot detect IRQ, DMA and I/O base address for now, so we have to - * enter them as arguments while wd_7000 is detected. If someone has IRQ, - * DMA or I/O base address set to some other value, he can enter them in - * configuration without any problem. Also I wrote a function wd7000_setup, - * so now you can enter WD-7000 definition as kernel arguments, - * as in lilo.conf: - * - * append="wd7000=IRQ,DMA,IO" - * - * PS: If card BIOS ROM is disabled, function wd7000_detect now will recognize - * adapter, unlike the old one. Anyway, BIOS ROM from WD7000 adapter is - * useless for Linux. B^) - * - * - * 09/06/1996. - * - * Autodetecting of I/O base address from wd7000_detect function is removed, - * some little bugs removed, etc... - * - * Thanks to Roger Scott for driver debugging. - * - * 06/07/1997 - * - * Added support for /proc file system (/proc/scsi/wd7000/[0...] files). - * Now, driver can handle hard disks with capacity >1GB. - * - * 01/15/1998 - * - * Added support for BUS_ON and BUS_OFF parameters in config line. - * Miscellaneous cleanup. - * - * 03/01/1998 - * - * WD7000 driver now work on kernels >= 2.1.x - * - * - * 12/31/2001 - Arnaldo Carvalho de Melo <acme@conectiva.com.br> - * - * use host->host_lock, not io_request_lock, cleanups - * - * 2002/10/04 - Alan Cox <alan@lxorguk.ukuu.org.uk> - * - * Use dev_id for interrupts, kill __func__ pasting - * Add a lock for the scb pool, clean up all other cli/sti usage stuff - * Use the adapter lock for the other places we had the cli's - * - * 2002/10/06 - Alan Cox <alan@lxorguk.ukuu.org.uk> - * - * Switch to new style error handling - * Clean up delay to udelay, and yielding sleeps - * Make host reset actually reset the card - * Make everything static - * - * 2003/02/12 - Christoph Hellwig <hch@infradead.org> - * - * Cleaned up host template definition - * Removed now obsolete wd7000.h - */ - -#include <linux/delay.h> -#include <linux/module.h> -#include <linux/interrupt.h> -#include <linux/kernel.h> -#include <linux/types.h> -#include <linux/string.h> -#include <linux/spinlock.h> -#include <linux/ioport.h> -#include <linux/proc_fs.h> -#include <linux/blkdev.h> -#include <linux/init.h> -#include <linux/stat.h> -#include <linux/io.h> - -#include <asm/dma.h> - -#include <scsi/scsi.h> -#include <scsi/scsi_cmnd.h> -#include <scsi/scsi_device.h> -#include <scsi/scsi_host.h> -#include <scsi/scsicam.h> - - -#undef WD7000_DEBUG /* general debug */ -#ifdef WD7000_DEBUG -#define dprintk printk -#else -#define dprintk no_printk -#endif - -/* - * Mailbox structure sizes. - * I prefer to keep the number of ICMBs much larger than the number of - * OGMBs. OGMBs are used very quickly by the driver to start one or - * more commands, while ICMBs are used by the host adapter per command. - */ -#define OGMB_CNT 16 -#define ICMB_CNT 32 - -/* - * Scb's are shared by all active adapters. So, if they all become busy, - * callers may be made to wait in alloc_scbs for them to free. That can - * be avoided by setting MAX_SCBS to NUM_CONFIG * WD7000_Q. If you'd - * rather conserve memory, use a smaller number (> 0, of course) - things - * will should still work OK. - */ -#define MAX_SCBS 32 - -/* - * In this version, sg_tablesize now defaults to WD7000_SG, and will - * be set to SG_NONE for older boards. This is the reverse of the - * previous default, and was changed so that the driver-level - * scsi_host_template would reflect the driver's support for scatter/ - * gather. - * - * Also, it has been reported that boards at Revision 6 support scatter/ - * gather, so the new definition of an "older" board has been changed - * accordingly. - */ -#define WD7000_Q 16 -#define WD7000_SG 16 - - -/* - * WD7000-specific mailbox structure - * - */ -typedef volatile struct mailbox { - unchar status; - unchar scbptr[3]; /* SCSI-style - MSB first (big endian) */ -} Mailbox; - -/* - * This structure should contain all per-adapter global data. I.e., any - * new global per-adapter data should put in here. - */ -typedef struct adapter { - struct Scsi_Host *sh; /* Pointer to Scsi_Host structure */ - int iobase; /* This adapter's I/O base address */ - int irq; /* This adapter's IRQ level */ - int dma; /* This adapter's DMA channel */ - int int_counter; /* This adapter's interrupt counter */ - int bus_on; /* This adapter's BUS_ON time */ - int bus_off; /* This adapter's BUS_OFF time */ - struct { /* This adapter's mailboxes */ - Mailbox ogmb[OGMB_CNT]; /* Outgoing mailboxes */ - Mailbox icmb[ICMB_CNT]; /* Incoming mailboxes */ - } mb; - int next_ogmb; /* to reduce contention at mailboxes */ - unchar control; /* shadows CONTROL port value */ - unchar rev1, rev2; /* filled in by wd7000_revision */ -} Adapter; - -/* - * (linear) base address for ROM BIOS - */ -static const long wd7000_biosaddr[] = { - 0xc0000, 0xc2000, 0xc4000, 0xc6000, 0xc8000, 0xca000, 0xcc000, 0xce000, - 0xd0000, 0xd2000, 0xd4000, 0xd6000, 0xd8000, 0xda000, 0xdc000, 0xde000 -}; -#define NUM_ADDRS ARRAY_SIZE(wd7000_biosaddr) - -static const unsigned short wd7000_iobase[] = { - 0x0300, 0x0308, 0x0310, 0x0318, 0x0320, 0x0328, 0x0330, 0x0338, - 0x0340, 0x0348, 0x0350, 0x0358, 0x0360, 0x0368, 0x0370, 0x0378, - 0x0380, 0x0388, 0x0390, 0x0398, 0x03a0, 0x03a8, 0x03b0, 0x03b8, - 0x03c0, 0x03c8, 0x03d0, 0x03d8, 0x03e0, 0x03e8, 0x03f0, 0x03f8 -}; -#define NUM_IOPORTS ARRAY_SIZE(wd7000_iobase) - -static const short wd7000_irq[] = { 3, 4, 5, 7, 9, 10, 11, 12, 14, 15 }; -#define NUM_IRQS ARRAY_SIZE(wd7000_irq) - -static const short wd7000_dma[] = { 5, 6, 7 }; -#define NUM_DMAS ARRAY_SIZE(wd7000_dma) - -/* - * The following is set up by wd7000_detect, and used thereafter for - * proc and other global ookups - */ - -#define UNITS 8 -static struct Scsi_Host *wd7000_host[UNITS]; - -#define BUS_ON 64 /* x 125ns = 8000ns (BIOS default) */ -#define BUS_OFF 15 /* x 125ns = 1875ns (BIOS default) */ - -/* - * Standard Adapter Configurations - used by wd7000_detect - */ -typedef struct { - short irq; /* IRQ level */ - short dma; /* DMA channel */ - unsigned iobase; /* I/O base address */ - short bus_on; /* Time that WD7000 spends on the AT-bus when */ - /* transferring data. BIOS default is 8000ns. */ - short bus_off; /* Time that WD7000 spends OFF THE BUS after */ - /* while it is transferring data. */ - /* BIOS default is 1875ns */ -} Config; - -/* - * Add here your configuration... - */ -static Config configs[] = { - {15, 6, 0x350, BUS_ON, BUS_OFF}, /* defaults for single adapter */ - {11, 5, 0x320, BUS_ON, BUS_OFF}, /* defaults for second adapter */ - {7, 6, 0x350, BUS_ON, BUS_OFF}, /* My configuration (Zaga) */ - {-1, -1, 0x0, BUS_ON, BUS_OFF} /* Empty slot */ -}; -#define NUM_CONFIGS ARRAY_SIZE(configs) - -/* - * The following list defines strings to look for in the BIOS that identify - * it as the WD7000-FASST2 SST BIOS. I suspect that something should be - * added for the Future Domain version. - */ -typedef struct signature { - const char *sig; /* String to look for */ - unsigned long ofs; /* offset from BIOS base address */ - unsigned len; /* length of string */ -} Signature; - -static const Signature signatures[] = { - {"SSTBIOS", 0x0000d, 7} /* "SSTBIOS" @ offset 0x0000d */ -}; -#define NUM_SIGNATURES ARRAY_SIZE(signatures) - - -/* - * I/O Port Offsets and Bit Definitions - * 4 addresses are used. Those not defined here are reserved. - */ -#define ASC_STAT 0 /* Status, Read */ -#define ASC_COMMAND 0 /* Command, Write */ -#define ASC_INTR_STAT 1 /* Interrupt Status, Read */ -#define ASC_INTR_ACK 1 /* Acknowledge, Write */ -#define ASC_CONTROL 2 /* Control, Write */ - -/* - * ASC Status Port - */ -#define INT_IM 0x80 /* Interrupt Image Flag */ -#define CMD_RDY 0x40 /* Command Port Ready */ -#define CMD_REJ 0x20 /* Command Port Byte Rejected */ -#define ASC_INIT 0x10 /* ASC Initialized Flag */ -#define ASC_STATMASK 0xf0 /* The lower 4 Bytes are reserved */ - -/* - * COMMAND opcodes - * - * Unfortunately, I have no idea how to properly use some of these commands, - * as the OEM manual does not make it clear. I have not been able to use - * enable/disable unsolicited interrupts or the reset commands with any - * discernible effect whatsoever. I think they may be related to certain - * ICB commands, but again, the OEM manual doesn't make that clear. - */ -#define NO_OP 0 /* NO-OP toggles CMD_RDY bit in ASC_STAT */ -#define INITIALIZATION 1 /* initialization (10 bytes) */ -#define DISABLE_UNS_INTR 2 /* disable unsolicited interrupts */ -#define ENABLE_UNS_INTR 3 /* enable unsolicited interrupts */ -#define INTR_ON_FREE_OGMB 4 /* interrupt on free OGMB */ -#define SOFT_RESET 5 /* SCSI bus soft reset */ -#define HARD_RESET_ACK 6 /* SCSI bus hard reset acknowledge */ -#define START_OGMB 0x80 /* start command in OGMB (n) */ -#define SCAN_OGMBS 0xc0 /* start multiple commands, signature (n) */ - /* where (n) = lower 6 bits */ -/* - * For INITIALIZATION: - */ -typedef struct initCmd { - unchar op; /* command opcode (= 1) */ - unchar ID; /* Adapter's SCSI ID */ - unchar bus_on; /* Bus on time, x 125ns (see below) */ - unchar bus_off; /* Bus off time, "" "" */ - unchar rsvd; /* Reserved */ - unchar mailboxes[3]; /* Address of Mailboxes, MSB first */ - unchar ogmbs; /* Number of outgoing MBs, max 64, 0,1 = 1 */ - unchar icmbs; /* Number of incoming MBs, "" "" */ -} InitCmd; - -/* - * Interrupt Status Port - also returns diagnostic codes at ASC reset - * - * if msb is zero, the lower bits are diagnostic status - * Diagnostics: - * 01 No diagnostic error occurred - * 02 RAM failure - * 03 FIFO R/W failed - * 04 SBIC register read/write failed - * 05 Initialization D-FF failed - * 06 Host IRQ D-FF failed - * 07 ROM checksum error - * Interrupt status (bitwise): - * 10NNNNNN outgoing mailbox NNNNNN is free - * 11NNNNNN incoming mailbox NNNNNN needs service - */ -#define MB_INTR 0xC0 /* Mailbox Service possible/required */ -#define IMB_INTR 0x40 /* 1 Incoming / 0 Outgoing */ -#define MB_MASK 0x3f /* mask for mailbox number */ - -/* - * CONTROL port bits - */ -#define INT_EN 0x08 /* Interrupt Enable */ -#define DMA_EN 0x04 /* DMA Enable */ -#define SCSI_RES 0x02 /* SCSI Reset */ -#define ASC_RES 0x01 /* ASC Reset */ - -/* - * Driver data structures: - * - mb and scbs are required for interfacing with the host adapter. - * An SCB has extra fields not visible to the adapter; mb's - * _cannot_ do this, since the adapter assumes they are contiguous in - * memory, 4 bytes each, with ICMBs following OGMBs, and uses this fact - * to access them. - * - An icb is for host-only (non-SCSI) commands. ICBs are 16 bytes each; - * the additional bytes are used only by the driver. - * - For now, a pool of SCBs are kept in global storage by this driver, - * and are allocated and freed as needed. - * - * The 7000-FASST2 marks OGMBs empty as soon as it has _started_ a command, - * not when it has finished. Since the SCB must be around for completion, - * problems arise when SCBs correspond to OGMBs, which may be reallocated - * earlier (or delayed unnecessarily until a command completes). - * Mailboxes are used as transient data structures, simply for - * carrying SCB addresses to/from the 7000-FASST2. - * - * Note also since SCBs are not "permanently" associated with mailboxes, - * there is no need to keep a global list of scsi_cmnd pointers indexed - * by OGMB. Again, SCBs reference their scsi_cmnds directly, so mailbox - * indices need not be involved. - */ - -/* - * WD7000-specific scatter/gather element structure - */ -typedef struct sgb { - unchar len[3]; - unchar ptr[3]; /* Also SCSI-style - MSB first */ -} Sgb; - -typedef struct scb { /* Command Control Block 5.4.1 */ - unchar op; /* Command Control Block Operation Code */ - unchar idlun; /* op=0,2:Target Id, op=1:Initiator Id */ - /* Outbound data transfer, length is checked */ - /* Inbound data transfer, length is checked */ - /* Logical Unit Number */ - unchar cdb[12]; /* SCSI Command Block */ - volatile unchar status; /* SCSI Return Status */ - volatile unchar vue; /* Vendor Unique Error Code */ - unchar maxlen[3]; /* Maximum Data Transfer Length */ - unchar dataptr[3]; /* SCSI Data Block Pointer */ - unchar linkptr[3]; /* Next Command Link Pointer */ - unchar direc; /* Transfer Direction */ - unchar reserved2[6]; /* SCSI Command Descriptor Block */ - /* end of hardware SCB */ - struct scsi_cmnd *SCpnt;/* scsi_cmnd using this SCB */ - Sgb sgb[WD7000_SG]; /* Scatter/gather list for this SCB */ - Adapter *host; /* host adapter */ - struct scb *next; /* for lists of scbs */ -} Scb; - -/* - * This driver is written to allow host-only commands to be executed. - * These use a 16-byte block called an ICB. The format is extended by the - * driver to 18 bytes, to support the status returned in the ICMB and - * an execution phase code. - * - * There are other formats besides these; these are the ones I've tried - * to use. Formats for some of the defined ICB opcodes are not defined - * (notably, get/set unsolicited interrupt status) in my copy of the OEM - * manual, and others are ambiguous/hard to follow. - */ -#define ICB_OP_MASK 0x80 /* distinguishes scbs from icbs */ -#define ICB_OP_OPEN_RBUF 0x80 /* open receive buffer */ -#define ICB_OP_RECV_CMD 0x81 /* receive command from initiator */ -#define ICB_OP_RECV_DATA 0x82 /* receive data from initiator */ -#define ICB_OP_RECV_SDATA 0x83 /* receive data with status from init. */ -#define ICB_OP_SEND_DATA 0x84 /* send data with status to initiator */ -#define ICB_OP_SEND_STAT 0x86 /* send command status to initiator */ - /* 0x87 is reserved */ -#define ICB_OP_READ_INIT 0x88 /* read initialization bytes */ -#define ICB_OP_READ_ID 0x89 /* read adapter's SCSI ID */ -#define ICB_OP_SET_UMASK 0x8A /* set unsolicited interrupt mask */ -#define ICB_OP_GET_UMASK 0x8B /* read unsolicited interrupt mask */ -#define ICB_OP_GET_REVISION 0x8C /* read firmware revision level */ -#define ICB_OP_DIAGNOSTICS 0x8D /* execute diagnostics */ -#define ICB_OP_SET_EPARMS 0x8E /* set execution parameters */ -#define ICB_OP_GET_EPARMS 0x8F /* read execution parameters */ - -typedef struct icbRecvCmd { - unchar op; - unchar IDlun; /* Initiator SCSI ID/lun */ - unchar len[3]; /* command buffer length */ - unchar ptr[3]; /* command buffer address */ - unchar rsvd[7]; /* reserved */ - volatile unchar vue; /* vendor-unique error code */ - volatile unchar status; /* returned (icmb) status */ - volatile unchar phase; /* used by interrupt handler */ -} IcbRecvCmd; - -typedef struct icbSendStat { - unchar op; - unchar IDlun; /* Target SCSI ID/lun */ - unchar stat; /* (outgoing) completion status byte 1 */ - unchar rsvd[12]; /* reserved */ - volatile unchar vue; /* vendor-unique error code */ - volatile unchar status; /* returned (icmb) status */ - volatile unchar phase; /* used by interrupt handler */ -} IcbSendStat; - -typedef struct icbRevLvl { - unchar op; - volatile unchar primary; /* primary revision level (returned) */ - volatile unchar secondary; /* secondary revision level (returned) */ - unchar rsvd[12]; /* reserved */ - volatile unchar vue; /* vendor-unique error code */ - volatile unchar status; /* returned (icmb) status */ - volatile unchar phase; /* used by interrupt handler */ -} IcbRevLvl; - -typedef struct icbUnsMask { /* I'm totally guessing here */ - unchar op; - volatile unchar mask[14]; /* mask bits */ -#if 0 - unchar rsvd[12]; /* reserved */ -#endif - volatile unchar vue; /* vendor-unique error code */ - volatile unchar status; /* returned (icmb) status */ - volatile unchar phase; /* used by interrupt handler */ -} IcbUnsMask; - -typedef struct icbDiag { - unchar op; - unchar type; /* diagnostics type code (0-3) */ - unchar len[3]; /* buffer length */ - unchar ptr[3]; /* buffer address */ - unchar rsvd[7]; /* reserved */ - volatile unchar vue; /* vendor-unique error code */ - volatile unchar status; /* returned (icmb) status */ - volatile unchar phase; /* used by interrupt handler */ -} IcbDiag; - -#define ICB_DIAG_POWERUP 0 /* Power-up diags only */ -#define ICB_DIAG_WALKING 1 /* walking 1's pattern */ -#define ICB_DIAG_DMA 2 /* DMA - system memory diags */ -#define ICB_DIAG_FULL 3 /* do both 1 & 2 */ - -typedef struct icbParms { - unchar op; - unchar rsvd1; /* reserved */ - unchar len[3]; /* parms buffer length */ - unchar ptr[3]; /* parms buffer address */ - unchar idx[2]; /* index (MSB-LSB) */ - unchar rsvd2[5]; /* reserved */ - volatile unchar vue; /* vendor-unique error code */ - volatile unchar status; /* returned (icmb) status */ - volatile unchar phase; /* used by interrupt handler */ -} IcbParms; - -typedef struct icbAny { - unchar op; - unchar data[14]; /* format-specific data */ - volatile unchar vue; /* vendor-unique error code */ - volatile unchar status; /* returned (icmb) status */ - volatile unchar phase; /* used by interrupt handler */ -} IcbAny; - -typedef union icb { - unchar op; /* ICB opcode */ - IcbRecvCmd recv_cmd; /* format for receive command */ - IcbSendStat send_stat; /* format for send status */ - IcbRevLvl rev_lvl; /* format for get revision level */ - IcbDiag diag; /* format for execute diagnostics */ - IcbParms eparms; /* format for get/set exec parms */ - IcbAny icb; /* generic format */ - unchar data[18]; -} Icb; - -#ifdef MODULE -static char *wd7000; -module_param(wd7000, charp, 0); -#endif - -/* - * Driver SCB structure pool. - * - * The SCBs declared here are shared by all host adapters; hence, this - * structure is not part of the Adapter structure. - */ -static Scb scbs[MAX_SCBS]; -static Scb *scbfree; /* free list */ -static int freescbs = MAX_SCBS; /* free list counter */ -static spinlock_t scbpool_lock; /* guards the scb free list and count */ - -/* - * END of data/declarations - code follows. - */ -static void __init setup_error(char *mesg, int *ints) -{ - if (ints[0] == 3) - printk(KERN_ERR "wd7000_setup: \"wd7000=%d,%d,0x%x\" -> %s\n", ints[1], ints[2], ints[3], mesg); - else if (ints[0] == 4) - printk(KERN_ERR "wd7000_setup: \"wd7000=%d,%d,0x%x,%d\" -> %s\n", ints[1], ints[2], ints[3], ints[4], mesg); - else - printk(KERN_ERR "wd7000_setup: \"wd7000=%d,%d,0x%x,%d,%d\" -> %s\n", ints[1], ints[2], ints[3], ints[4], ints[5], mesg); -} - - -/* - * Note: You can now set these options from the kernel's "command line". - * The syntax is: - * - * wd7000=<IRQ>,<DMA>,<IO>[,<BUS_ON>[,<BUS_OFF>]] - * - * , where BUS_ON and BUS_OFF are in nanoseconds. BIOS default values - * are 8000ns for BUS_ON and 1875ns for BUS_OFF. - * eg: - * wd7000=7,6,0x350 - * - * will configure the driver for a WD-7000 controller - * using IRQ 15 with a DMA channel 6, at IO base address 0x350. - */ -static int __init wd7000_setup(char *str) -{ - static short wd7000_card_num; /* .bss will zero this */ - short i; - int ints[6]; - - (void) get_options(str, ARRAY_SIZE(ints), ints); - - if (wd7000_card_num >= NUM_CONFIGS) { - printk(KERN_ERR "%s: Too many \"wd7000=\" configurations in " "command line!\n", __func__); - return 0; - } - - if ((ints[0] < 3) || (ints[0] > 5)) { - printk(KERN_ERR "%s: Error in command line! " "Usage: wd7000=<IRQ>,<DMA>,IO>[,<BUS_ON>" "[,<BUS_OFF>]]\n", __func__); - } else { - for (i = 0; i < NUM_IRQS; i++) - if (ints[1] == wd7000_irq[i]) - break; - - if (i == NUM_IRQS) { - setup_error("invalid IRQ.", ints); - return 0; - } else - configs[wd7000_card_num].irq = ints[1]; - - for (i = 0; i < NUM_DMAS; i++) - if (ints[2] == wd7000_dma[i]) - break; - - if (i == NUM_DMAS) { - setup_error("invalid DMA channel.", ints); - return 0; - } else - configs[wd7000_card_num].dma = ints[2]; - - for (i = 0; i < NUM_IOPORTS; i++) - if (ints[3] == wd7000_iobase[i]) - break; - - if (i == NUM_IOPORTS) { - setup_error("invalid I/O base address.", ints); - return 0; - } else - configs[wd7000_card_num].iobase = ints[3]; - - if (ints[0] > 3) { - if ((ints[4] < 500) || (ints[4] > 31875)) { - setup_error("BUS_ON value is out of range (500" " to 31875 nanoseconds)!", ints); - configs[wd7000_card_num].bus_on = BUS_ON; - } else - configs[wd7000_card_num].bus_on = ints[4] / 125; - } else - configs[wd7000_card_num].bus_on = BUS_ON; - - if (ints[0] > 4) { - if ((ints[5] < 500) || (ints[5] > 31875)) { - setup_error("BUS_OFF value is out of range (500" " to 31875 nanoseconds)!", ints); - configs[wd7000_card_num].bus_off = BUS_OFF; - } else - configs[wd7000_card_num].bus_off = ints[5] / 125; - } else - configs[wd7000_card_num].bus_off = BUS_OFF; - - if (wd7000_card_num) { - for (i = 0; i < (wd7000_card_num - 1); i++) { - int j = i + 1; - - for (; j < wd7000_card_num; j++) - if (configs[i].irq == configs[j].irq) { - setup_error("duplicated IRQ!", ints); - return 0; - } - if (configs[i].dma == configs[j].dma) { - setup_error("duplicated DMA " "channel!", ints); - return 0; - } - if (configs[i].iobase == configs[j].iobase) { - setup_error("duplicated I/O " "base address!", ints); - return 0; - } - } - } - - dprintk(KERN_DEBUG "wd7000_setup: IRQ=%d, DMA=%d, I/O=0x%x, " - "BUS_ON=%dns, BUS_OFF=%dns\n", configs[wd7000_card_num].irq, configs[wd7000_card_num].dma, configs[wd7000_card_num].iobase, configs[wd7000_card_num].bus_on * 125, configs[wd7000_card_num].bus_off * 125); - - wd7000_card_num++; - } - return 1; -} - -__setup("wd7000=", wd7000_setup); - -static inline void any2scsi(unchar * scsi, int any) -{ - *scsi++ = (unsigned)any >> 16; - *scsi++ = (unsigned)any >> 8; - *scsi++ = any; -} - -static inline int scsi2int(unchar * scsi) -{ - return (scsi[0] << 16) | (scsi[1] << 8) | scsi[2]; -} - -static inline void wd7000_enable_intr(Adapter * host) -{ - host->control |= INT_EN; - outb(host->control, host->iobase + ASC_CONTROL); -} - - -static inline void wd7000_enable_dma(Adapter * host) -{ - unsigned long flags; - host->control |= DMA_EN; - outb(host->control, host->iobase + ASC_CONTROL); - - flags = claim_dma_lock(); - set_dma_mode(host->dma, DMA_MODE_CASCADE); - enable_dma(host->dma); - release_dma_lock(flags); - -} - - -#define WAITnexttimeout 200 /* 2 seconds */ - -static inline short WAIT(unsigned port, unsigned mask, unsigned allof, unsigned noneof) -{ - unsigned WAITbits; - unsigned long WAITtimeout = jiffies + WAITnexttimeout; - - while (time_before_eq(jiffies, WAITtimeout)) { - WAITbits = inb(port) & mask; - - if (((WAITbits & allof) == allof) && ((WAITbits & noneof) == 0)) - return (0); - } - - return (1); -} - - -static inline int command_out(Adapter * host, unchar * cmd, int len) -{ - if (!WAIT(host->iobase + ASC_STAT, ASC_STATMASK, CMD_RDY, 0)) { - while (len--) { - do { - outb(*cmd, host->iobase + ASC_COMMAND); - WAIT(host->iobase + ASC_STAT, ASC_STATMASK, CMD_RDY, 0); - } while (inb(host->iobase + ASC_STAT) & CMD_REJ); - - cmd++; - } - - return (1); - } - - printk(KERN_WARNING "wd7000 command_out: WAIT failed(%d)\n", len + 1); - - return (0); -} - - -/* - * This version of alloc_scbs is in preparation for supporting multiple - * commands per lun and command chaining, by queueing pending commands. - * We will need to allocate Scbs in blocks since they will wait to be - * executed so there is the possibility of deadlock otherwise. - * Also, to keep larger requests from being starved by smaller requests, - * we limit access to this routine with an internal busy flag, so that - * the satisfiability of a request is not dependent on the size of the - * request. - */ -static inline Scb *alloc_scbs(struct Scsi_Host *host, int needed) -{ - Scb *scb, *p = NULL; - unsigned long flags; - unsigned long timeout = jiffies + WAITnexttimeout; - unsigned long now; - int i; - - if (needed <= 0) - return (NULL); /* sanity check */ - - spin_unlock_irq(host->host_lock); - - retry: - while (freescbs < needed) { - timeout = jiffies + WAITnexttimeout; - do { - /* FIXME: can we actually just yield here ?? */ - for (now = jiffies; now == jiffies;) - cpu_relax(); /* wait a jiffy */ - } while (freescbs < needed && time_before_eq(jiffies, timeout)); - /* - * If we get here with enough free Scbs, we can take them. - * Otherwise, we timed out and didn't get enough. - */ - if (freescbs < needed) { - printk(KERN_ERR "wd7000: can't get enough free SCBs.\n"); - return (NULL); - } - } - - /* Take the lock, then check we didn't get beaten, if so try again */ - spin_lock_irqsave(&scbpool_lock, flags); - if (freescbs < needed) { - spin_unlock_irqrestore(&scbpool_lock, flags); - goto retry; - } - - scb = scbfree; - freescbs -= needed; - for (i = 0; i < needed; i++) { - p = scbfree; - scbfree = p->next; - } - p->next = NULL; - - spin_unlock_irqrestore(&scbpool_lock, flags); - - spin_lock_irq(host->host_lock); - return (scb); -} - - -static inline void free_scb(Scb * scb) -{ - unsigned long flags; - - spin_lock_irqsave(&scbpool_lock, flags); - - memset(scb, 0, sizeof(Scb)); - scb->next = scbfree; - scbfree = scb; - freescbs++; - - spin_unlock_irqrestore(&scbpool_lock, flags); -} - - -static inline void init_scbs(void) -{ - int i; - - spin_lock_init(&scbpool_lock); - - /* This is only ever called before the SCB pool is active */ - - scbfree = &(scbs[0]); - memset(scbs, 0, sizeof(scbs)); - for (i = 0; i < MAX_SCBS - 1; i++) { - scbs[i].next = &(scbs[i + 1]); - scbs[i].SCpnt = NULL; - } - scbs[MAX_SCBS - 1].next = NULL; - scbs[MAX_SCBS - 1].SCpnt = NULL; -} - - -static int mail_out(Adapter * host, Scb * scbptr) -/* - * Note: this can also be used for ICBs; just cast to the parm type. - */ -{ - int i, ogmb; - unsigned long flags; - unchar start_ogmb; - Mailbox *ogmbs = host->mb.ogmb; - int *next_ogmb = &(host->next_ogmb); - - dprintk("wd7000_mail_out: 0x%06lx", (long) scbptr); - - /* We first look for a free outgoing mailbox */ - spin_lock_irqsave(host->sh->host_lock, flags); - ogmb = *next_ogmb; - for (i = 0; i < OGMB_CNT; i++) { - if (ogmbs[ogmb].status == 0) { - dprintk(" using OGMB 0x%x", ogmb); - ogmbs[ogmb].status = 1; - any2scsi((unchar *) ogmbs[ogmb].scbptr, (i |
