+++ /dev/null
-/*
- * NCR53c406.c
- * Low-level SCSI driver for NCR53c406a chip.
- * Copyright (C) 1994, 1995, 1996 Normunds Saumanis (normunds@fi.ibm.com)
- *
- * LILO command line usage: ncr53c406a=<PORTBASE>[,<IRQ>[,<FASTPIO>]]
- * Specify IRQ = 0 for non-interrupt driven mode.
- * FASTPIO = 1 for fast pio mode, 0 for slow mode.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2, or (at your option) any
- * later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- */
-
-#define NCR53C406A_DEBUG 0
-#define VERBOSE_NCR53C406A_DEBUG 0
-
-/* Set this to 1 for PIO mode (recommended) or to 0 for DMA mode */
-#define USE_PIO 1
-
-#define USE_BIOS 0
- /* #define BIOS_ADDR 0xD8000 *//* define this if autoprobe fails */
- /* #define PORT_BASE 0x330 *//* define this if autoprobe fails */
- /* #define IRQ_LEV 0 *//* define this if autoprobe fails */
-#define DMA_CHAN 5 /* this is ignored if DMA is disabled */
-
-/* Set this to 0 if you encounter kernel lockups while transferring
- * data in PIO mode */
-#define USE_FAST_PIO 1
-
-/* ============= End of user configurable parameters ============= */
-
-#include <linux/module.h>
-
-#include <linux/errno.h>
-#include <linux/ioport.h>
-#include <linux/interrupt.h>
-#include <linux/proc_fs.h>
-#include <linux/stat.h>
-#include <linux/init.h>
-#include <linux/bitops.h>
-#include <asm/io.h>
-#include <asm/dma.h>
-#include <asm/irq.h>
-
-#include <linux/blkdev.h>
-#include <linux/spinlock.h>
-#include "scsi.h"
-#include <scsi/scsi_host.h>
-
-/* ============================================================= */
-
-#define WATCHDOG 5000000
-
-#define SYNC_MODE 0 /* Synchronous transfer mode */
-
-#ifdef DEBUG
-#undef NCR53C406A_DEBUG
-#define NCR53C406A_DEBUG 1
-#endif
-
-#if USE_PIO
-#define USE_DMA 0
-#else
-#define USE_DMA 1
-#endif
-
-/* Default configuration */
-#define C1_IMG 0x07 /* ID=7 */
-#define C2_IMG 0x48 /* FE SCSI2 */
-#if USE_DMA
-#define C3_IMG 0x21 /* CDB TE */
-#else
-#define C3_IMG 0x20 /* CDB */
-#endif
-#define C4_IMG 0x04 /* ANE */
-#define C5_IMG 0xb6 /* AA PI SIE POL */
-
-#define REG0 (outb(C4_IMG, CONFIG4))
-#define REG1 (outb(C5_IMG, CONFIG5))
-
-#if NCR53C406A_DEBUG
-#define DEB(x) x
-#else
-#define DEB(x)
-#endif
-
-#if VERBOSE_NCR53C406A_DEBUG
-#define VDEB(x) x
-#else
-#define VDEB(x)
-#endif
-
-#define LOAD_DMA_COUNT(count) \
- outb(count & 0xff, TC_LSB); \
- outb((count >> 8) & 0xff, TC_MSB); \
- outb((count >> 16) & 0xff, TC_HIGH);
-
-/* Chip commands */
-#define DMA_OP 0x80
-
-#define SCSI_NOP 0x00
-#define FLUSH_FIFO 0x01
-#define CHIP_RESET 0x02
-#define SCSI_RESET 0x03
-#define RESELECT 0x40
-#define SELECT_NO_ATN 0x41
-#define SELECT_ATN 0x42
-#define SELECT_ATN_STOP 0x43
-#define ENABLE_SEL 0x44
-#define DISABLE_SEL 0x45
-#define SELECT_ATN3 0x46
-#define RESELECT3 0x47
-#define TRANSFER_INFO 0x10
-#define INIT_CMD_COMPLETE 0x11
-#define MSG_ACCEPT 0x12
-#define TRANSFER_PAD 0x18
-#define SET_ATN 0x1a
-#define RESET_ATN 0x1b
-#define SEND_MSG 0x20
-#define SEND_STATUS 0x21
-#define SEND_DATA 0x22
-#define DISCONN_SEQ 0x23
-#define TERMINATE_SEQ 0x24
-#define TARG_CMD_COMPLETE 0x25
-#define DISCONN 0x27
-#define RECV_MSG 0x28
-#define RECV_CMD 0x29
-#define RECV_DATA 0x2a
-#define RECV_CMD_SEQ 0x2b
-#define TARGET_ABORT_DMA 0x04
-
-/*----------------------------------------------------------------*/
-/* the following will set the monitor border color (useful to find
- where something crashed or gets stuck at */
-/* 1 = blue
- 2 = green
- 3 = cyan
- 4 = red
- 5 = magenta
- 6 = yellow
- 7 = white
-*/
-
-#if NCR53C406A_DEBUG
-#define rtrc(i) {inb(0x3da);outb(0x31,0x3c0);outb((i),0x3c0);}
-#else
-#define rtrc(i) {}
-#endif
-/*----------------------------------------------------------------*/
-
-enum Phase {
- idle,
- data_out,
- data_in,
- command_ph,
- status_ph,
- message_out,
- message_in
-};
-
-/* Static function prototypes */
-static void NCR53c406a_intr(void *);
-static irqreturn_t do_NCR53c406a_intr(int, void *);
-static void chip_init(void);
-static void calc_port_addr(void);
-#ifndef IRQ_LEV
-static int irq_probe(void);
-#endif
-
-/* ================================================================= */
-
-#if USE_BIOS
-static void *bios_base;
-#endif
-
-#ifdef PORT_BASE
-static int port_base = PORT_BASE;
-#else
-static int port_base;
-#endif
-
-#ifdef IRQ_LEV
-static int irq_level = IRQ_LEV;
-#else
-static int irq_level = -1; /* 0 is 'no irq', so use -1 for 'uninitialized' */
-#endif
-
-#if USE_DMA
-static int dma_chan;
-#endif
-
-#if USE_PIO
-static int fast_pio = USE_FAST_PIO;
-#endif
-
-static Scsi_Cmnd *current_SC;
-static char info_msg[256];
-
-/* ================================================================= */
-
-/* possible BIOS locations */
-#if USE_BIOS
-static void *addresses[] = {
- (void *) 0xd8000,
- (void *) 0xc8000
-};
-#define ADDRESS_COUNT ARRAY_SIZE(addresses)
-#endif /* USE_BIOS */
-
-/* possible i/o port addresses */
-static unsigned short ports[] = { 0x230, 0x330, 0x280, 0x290, 0x330, 0x340, 0x300, 0x310, 0x348, 0x350 };
-#define PORT_COUNT ARRAY_SIZE(ports)
-
-#ifndef MODULE
-/* possible interrupt channels */
-static unsigned short intrs[] = { 10, 11, 12, 15 };
-#define INTR_COUNT ARRAY_SIZE(intrs)
-#endif /* !MODULE */
-
-/* signatures for NCR 53c406a based controllers */
-#if USE_BIOS
-struct signature {
- char *signature;
- int sig_offset;
- int sig_length;
-} signatures[] __initdata = {
- /* 1 2 3 4 5 6 */
- /* 123456789012345678901234567890123456789012345678901234567890 */
- {
-"Copyright (C) Acculogic, Inc.\r\n2.8M Diskette Extension Bios ver 4.04.03 03/01/1993", 61, 82},};
-
-#define SIGNATURE_COUNT ARRAY_SIZE(signatures)
-#endif /* USE_BIOS */
-
-/* ============================================================ */
-
-/* Control Register Set 0 */
-static int TC_LSB; /* transfer counter lsb */
-static int TC_MSB; /* transfer counter msb */
-static int SCSI_FIFO; /* scsi fifo register */
-static int CMD_REG; /* command register */
-static int STAT_REG; /* status register */
-static int DEST_ID; /* selection/reselection bus id */
-static int INT_REG; /* interrupt status register */
-static int SRTIMOUT; /* select/reselect timeout reg */
-static int SEQ_REG; /* sequence step register */
-static int SYNCPRD; /* synchronous transfer period */
-static int FIFO_FLAGS; /* indicates # of bytes in fifo */
-static int SYNCOFF; /* synchronous offset register */
-static int CONFIG1; /* configuration register */
-static int CLKCONV; /* clock conversion reg */
- /*static int TESTREG;*//* test mode register */
-static int CONFIG2; /* Configuration 2 Register */
-static int CONFIG3; /* Configuration 3 Register */
-static int CONFIG4; /* Configuration 4 Register */
-static int TC_HIGH; /* Transfer Counter High */
- /*static int FIFO_BOTTOM;*//* Reserve FIFO byte register */
-
-/* Control Register Set 1 */
- /*static int JUMPER_SENSE;*//* Jumper sense port reg (r/w) */
- /*static int SRAM_PTR;*//* SRAM address pointer reg (r/w) */
- /*static int SRAM_DATA;*//* SRAM data register (r/w) */
-static int PIO_FIFO; /* PIO FIFO registers (r/w) */
- /*static int PIO_FIFO1;*//* */
- /*static int PIO_FIFO2;*//* */
- /*static int PIO_FIFO3;*//* */
-static int PIO_STATUS; /* PIO status (r/w) */
- /*static int ATA_CMD;*//* ATA command/status reg (r/w) */
- /*static int ATA_ERR;*//* ATA features/error register (r/w) */
-static int PIO_FLAG; /* PIO flag interrupt enable (r/w) */
-static int CONFIG5; /* Configuration 5 register (r/w) */
- /*static int SIGNATURE;*//* Signature Register (r) */
- /*static int CONFIG6;*//* Configuration 6 register (r) */
-
-/* ============================================================== */
-
-#if USE_DMA
-static __inline__ int NCR53c406a_dma_setup(unsigned char *ptr, unsigned int count, unsigned char mode)
-{
- unsigned limit;
- unsigned long flags = 0;
-
- VDEB(printk("dma: before count=%d ", count));
- if (dma_chan <= 3) {
- if (count > 65536)
- count = 65536;
- limit = 65536 - (((unsigned) ptr) & 0xFFFF);
- } else {
- if (count > (65536 << 1))
- count = (65536 << 1);
- limit = (65536 << 1) - (((unsigned) ptr) & 0x1FFFF);
- }
-
- if (count > limit)
- count = limit;
-
- VDEB(printk("after count=%d\n", count));
- if ((count & 1) || (((unsigned) ptr) & 1))
- panic("NCR53c406a: attempted unaligned DMA transfer\n");
-
- flags = claim_dma_lock();
- disable_dma(dma_chan);
- clear_dma_ff(dma_chan);
- set_dma_addr(dma_chan, (long) ptr);
- set_dma_count(dma_chan, count);
- set_dma_mode(dma_chan, mode);
- enable_dma(dma_chan);
- release_dma_lock(flags);
-
- return count;
-}
-
-static __inline__ int NCR53c406a_dma_write(unsigned char *src, unsigned int count)
-{
- return NCR53c406a_dma_setup(src, count, DMA_MODE_WRITE);
-}
-
-static __inline__ int NCR53c406a_dma_read(unsigned char *src, unsigned int count)
-{
- return NCR53c406a_dma_setup(src, count, DMA_MODE_READ);
-}
-
-static __inline__ int NCR53c406a_dma_residual(void)
-{
- register int tmp;
- unsigned long flags;
-
- flags = claim_dma_lock();
- clear_dma_ff(dma_chan);
- tmp = get_dma_residue(dma_chan);
- release_dma_lock(flags);
-
- return tmp;
-}
-#endif /* USE_DMA */
-
-#if USE_PIO
-static __inline__ int NCR53c406a_pio_read(unsigned char *request, unsigned int reqlen)
-{
- int i;
- int len; /* current scsi fifo size */
-
- REG1;
- while (reqlen) {
- i = inb(PIO_STATUS);
- /* VDEB(printk("pio_status=%x\n", i)); */
- if (i & 0x80)
- return 0;
-
- switch (i & 0x1e) {
- default:
- case 0x10:
- len = 0;
- break;
- case 0x0:
- len = 1;
- break;
- case 0x8:
- len = 42;
- break;
- case 0xc:
- len = 84;
- break;
- case 0xe:
- len = 128;
- break;
- }
-
- if ((i & 0x40) && len == 0) { /* fifo empty and interrupt occurred */
- return 0;
- }
-
- if (len) {
- if (len > reqlen)
- len = reqlen;
-
- if (fast_pio && len > 3) {
- insl(PIO_FIFO, request, len >> 2);
- request += len & 0xfc;
- reqlen -= len & 0xfc;
- } else {
- while (len--) {
- *request++ = inb(PIO_FIFO);
- reqlen--;
- }
- }
- }
- }
- return 0;
-}
-
-static __inline__ int NCR53c406a_pio_write(unsigned char *request, unsigned int reqlen)
-{
- int i = 0;
- int len; /* current scsi fifo size */
-
- REG1;
- while (reqlen && !(i & 0x40)) {
- i = inb(PIO_STATUS);
- /* VDEB(printk("pio_status=%x\n", i)); */
- if (i & 0x80) /* error */
- return 0;
-
- switch (i & 0x1e) {
- case 0x10:
- len = 128;
- break;
- case 0x0:
- len = 84;
- break;
- case 0x8:
- len = 42;
- break;
- case 0xc:
- len = 1;
- break;
- default:
- case 0xe:
- len = 0;
- break;
- }
-
- if (len) {
- if (len > reqlen)
- len = reqlen;
-
- if (fast_pio && len > 3) {
- outsl(PIO_FIFO, request, len >> 2);
- request += len & 0xfc;
- reqlen -= len & 0xfc;
- } else {
- while (len--) {
- outb(*request++, PIO_FIFO);
- reqlen--;
- }
- }
- }
- }
- return 0;
-}
-#endif /* USE_PIO */
-
-static int NCR53c406a_detect(struct scsi_host_template * tpnt)
-{
- int present = 0;
- struct Scsi_Host *shpnt = NULL;
-#ifndef PORT_BASE
- int i;
-#endif
-
-#if USE_BIOS
- int ii, jj;
- bios_base = 0;
- /* look for a valid signature */
- for (ii = 0; ii < ADDRESS_COUNT && !bios_base; ii++)
- for (jj = 0; (jj < SIGNATURE_COUNT) && !bios_base; jj++)
- if (!memcmp((void *) addresses[ii] + signatures[jj].sig_offset, (void *) signatures[jj].signature, (int) signatures[jj].sig_length))
- bios_base = addresses[ii];
-
- if (!bios_base) {
- printk("NCR53c406a: BIOS signature not found\n");
- return 0;
- }
-
- DEB(printk("NCR53c406a BIOS found at 0x%x\n", (unsigned int) bios_base);
- );
-#endif /* USE_BIOS */
-
-#ifdef PORT_BASE
- if (!request_region(port_base, 0x10, "NCR53c406a")) /* ports already snatched */
- port_base = 0;
-
-#else /* autodetect */
- if (port_base) { /* LILO override */
- if (!request_region(port_base, 0x10, "NCR53c406a"))
- port_base = 0;
- } else {
- for (i = 0; i < PORT_COUNT && !port_base; i++) {
- if (!request_region(ports[i], 0x10, "NCR53c406a")) {
- DEB(printk("NCR53c406a: port 0x%x in use\n", ports[i]));
- } else {
- VDEB(printk("NCR53c406a: port 0x%x available\n", ports[i]));
- outb(C5_IMG, ports[i] + 0x0d); /* reg set 1 */
- if ((inb(ports[i] + 0x0e) ^ inb(ports[i] + 0x0e)) == 7 && (inb(ports[i] + 0x0e) ^ inb(ports[i] + 0x0e)) == 7 && (inb(ports[i] + 0x0e) & 0xf8) == 0x58) {
- port_base = ports[i];
- VDEB(printk("NCR53c406a: Sig register valid\n"));
- VDEB(printk("port_base=0x%x\n", port_base));
- break;
- }
- release_region(ports[i], 0x10);
- }
- }
- }
-#endif /* PORT_BASE */
-
- if (!port_base) { /* no ports found */
- printk("NCR53c406a: no available ports found\n");
- return 0;
- }
-
- DEB(printk("NCR53c406a detected\n"));
-
- calc_port_addr();
- chip_init();
-
-#ifndef IRQ_LEV
- if (irq_level < 0) { /* LILO override if >= 0 */
- irq_level = irq_probe();
- if (irq_level < 0) { /* Trouble */
- printk("NCR53c406a: IRQ problem, irq_level=%d, giving up\n", irq_level);
- goto err_release;
- }
- }
-#endif
-
- DEB(printk("NCR53c406a: using port_base 0x%x\n", port_base));
-
- present = 1;
- tpnt->proc_name = "NCR53c406a";
-
- shpnt = scsi_register(tpnt, 0);
- if (!shpnt) {
- printk("NCR53c406a: Unable to register host, giving up.\n");
- goto err_release;
- }
-
- if (irq_level > 0) {
- if (request_irq(irq_level, do_NCR53c406a_intr, 0, "NCR53c406a", shpnt)) {
- printk("NCR53c406a: unable to allocate IRQ %d\n", irq_level);
- goto err_free_scsi;
- }
- tpnt->can_queue = 1;
- DEB(printk("NCR53c406a: allocated IRQ %d\n", irq_level));
- } else if (irq_level == 0) {
- tpnt->can_queue = 0;
- DEB(printk("NCR53c406a: No interrupts detected\n"));
- printk("NCR53c406a driver no longer supports polling interface\n");
- printk("Please email linux-scsi@vger.kernel.org\n");
-
-#if USE_DMA
- printk("NCR53c406a: No interrupts found and DMA mode defined. Giving up.\n");
-#endif /* USE_DMA */
- goto err_free_scsi;
- } else {
- DEB(printk("NCR53c406a: Shouldn't get here!\n"));
- goto err_free_scsi;
- }
-
-#if USE_DMA
- dma_chan = DMA_CHAN;
- if (request_dma(dma_chan, "NCR53c406a") != 0) {
- printk("NCR53c406a: unable to allocate DMA channel %d\n", dma_chan);
- goto err_free_irq;
- }
-
- DEB(printk("Allocated DMA channel %d\n", dma_chan));
-#endif /* USE_DMA */
-
- shpnt->irq = irq_level;
- shpnt->io_port = port_base;
- shpnt->n_io_port = 0x10;
-#if USE_DMA
- shpnt->dma = dma_chan;
-#endif
-
-#if USE_DMA
- sprintf(info_msg, "NCR53c406a at 0x%x, IRQ %d, DMA channel %d.", port_base, irq_level, dma_chan);
-#else
- sprintf(info_msg, "NCR53c406a at 0x%x, IRQ %d, %s PIO mode.", port_base, irq_level, fast_pio ? "fast" : "slow");
-#endif
-
- return (present);
-
-#if USE_DMA
- err_free_irq:
- if (irq_level)
- free_irq(irq_level, shpnt);
-#endif
- err_free_scsi:
- scsi_unregister(shpnt);
- err_release:
- release_region(port_base, 0x10);
- return 0;
-}
-
-static int NCR53c406a_release(struct Scsi_Host *shost)
-{
- if (shost->irq)
- free_irq(shost->irq, NULL);
-#if USE_DMA
- if (shost->dma_channel != 0xff)
- free_dma(shost->dma_channel);
-#endif
- if (shost->io_port && shost->n_io_port)
- release_region(shost->io_port, shost->n_io_port);
-
- scsi_unregister(shost);
- return 0;
-}
-
-#ifndef MODULE
-/* called from init/main.c */
-static int __init NCR53c406a_setup(char *str)
-{
- static size_t setup_idx = 0;
- size_t i;
- int ints[4];
-
- DEB(printk("NCR53c406a: Setup called\n");
- );
-
- if (setup_idx >= PORT_COUNT - 1) {
- printk("NCR53c406a: Setup called too many times. Bad LILO params?\n");
- return 0;
- }
- get_options(str, 4, ints);
- if (ints[0] < 1 || ints[0] > 3) {
- printk("NCR53c406a: Malformed command line\n");
- printk("NCR53c406a: Usage: ncr53c406a=<PORTBASE>[,<IRQ>[,<FASTPIO>]]\n");
- return 0;
- }
- for (i = 0; i < PORT_COUNT && !port_base; i++)
- if (ports[i] == ints[1]) {
- port_base = ints[1];
- DEB(printk("NCR53c406a: Specified port_base 0x%x\n", port_base);
- )
- }
- if (!port_base) {
- printk("NCR53c406a: Invalid PORTBASE 0x%x specified\n", ints[1]);
- return 0;
- }
-
- if (ints[0] > 1) {
- if (ints[2] == 0) {
- irq_level = 0;
- DEB(printk("NCR53c406a: Specified irq %d\n", irq_level);
- )
- } else
- for (i = 0; i < INTR_COUNT && irq_level < 0; i++)
- if (intrs[i] == ints[2]) {
- irq_level = ints[2];
- DEB(printk("NCR53c406a: Specified irq %d\n", port_base);
- )
- }
- if (irq_level < 0)
- printk("NCR53c406a: Invalid IRQ %d specified\n", ints[2]);
- }
-
- if (ints[0] > 2)
- fast_pio = ints[3];
-
- DEB(printk("NCR53c406a: port_base=0x%x, irq=%d, fast_pio=%d\n", port_base, irq_level, fast_pio);)
- return 1;
-}
-
-__setup("ncr53c406a=", NCR53c406a_setup);
-
-#endif /* !MODULE */
-
-static const char *NCR53c406a_info(struct Scsi_Host *SChost)
-{
- DEB(printk("NCR53c406a_info called\n"));
- return (info_msg);
-}
-
-#if 0
-static void wait_intr(void)
-{
- unsigned long i = jiffies + WATCHDOG;
-
- while (time_after(i, jiffies) && !(inb(STAT_REG) & 0xe0)) { /* wait for a pseudo-interrupt */
- cpu_relax();
- barrier();
- }
-
- if (time_before_eq(i, jiffies)) { /* Timed out */
- rtrc(0);
- current_SC->result = DID_TIME_OUT << 16;
- current_SC->SCp.phase = idle;
- current_SC->scsi_done(current_SC);
- return;
- }
-
- NCR53c406a_intr(NULL);
-}
-#endif
-
-static int NCR53c406a_queue_lck(Scsi_Cmnd * SCpnt, void (*done) (Scsi_Cmnd *))
-{
- int i;
-
- VDEB(printk("NCR53c406a_queue called\n"));
- DEB(printk("cmd=%02x, cmd_len=%02x, target=%02x, lun=%02x, bufflen=%d\n", SCpnt->cmnd[0], SCpnt->cmd_len, SCpnt->device->target, (u8)SCpnt->device->lun, scsi_bufflen(SCpnt)));
-
-#if 0
- VDEB(for (i = 0; i < SCpnt->cmd_len; i++)
- printk("cmd[%d]=%02x ", i, SCpnt->cmnd[i]));
- VDEB(printk("\n"));
-#endif
-
- current_SC = SCpnt;
- current_SC->scsi_done = done;
- current_SC->SCp.phase = command_ph;
- current_SC->SCp.Status = 0;
- current_SC->SCp.Message = 0;
-
- /* We are locked here already by the mid layer */
- REG0;
- outb(scmd_id(SCpnt), DEST_ID); /* set destination */
- outb(FLUSH_FIFO, CMD_REG); /* reset the fifos */
-
- for (i = 0; i < SCpnt->cmd_len; i++) {
- outb(SCpnt->cmnd[i], SCSI_FIFO);
- }
- outb(SELECT_NO_ATN, CMD_REG);
-
- rtrc(1);
- return 0;
-}
-
-static DEF_SCSI_QCMD(NCR53c406a_queue)
-
-static int NCR53c406a_host_reset(Scsi_Cmnd * SCpnt)
-{
- DEB(printk("NCR53c406a_reset called\n"));
-
- spin_lock_irq(SCpnt->device->host->host_lock);
-
- outb(C4_IMG, CONFIG4); /* Select reg set 0 */
- outb(CHIP_RESET, CMD_REG);
- outb(SCSI_NOP, CMD_REG); /* required after reset */
- outb(SCSI_RESET, CMD_REG);
- chip_init();
-
- rtrc(2);
-
- spin_unlock_irq(SCpnt->device->host->host_lock);
-
- return SUCCESS;
-}
-
-static int NCR53c406a_biosparm(struct scsi_device *disk,
- struct block_device *dev,
- sector_t capacity, int *info_array)
-{
- int size;
-
- DEB(printk("NCR53c406a_biosparm called\n"));
-
- size = capacity;
- info_array[0] = 64; /* heads */
- info_array[1] = 32; /* sectors */
- info_array[2] = size >> 11; /* cylinders */
- if (info_array[2] > 1024) { /* big disk */
- info_array[0] = 255;
- info_array[1] = 63;
- info_array[2] = size / (255 * 63);
- }
- return 0;
-}
-
-static irqreturn_t do_NCR53c406a_intr(int unused, void *dev_id)
-{
- unsigned long flags;
- struct Scsi_Host *dev = dev_id;
-
- spin_lock_irqsave(dev->host_lock, flags);
- NCR53c406a_intr(dev_id);
- spin_unlock_irqrestore(dev->host_lock, flags);
- return IRQ_HANDLED;
-}
-
-static void NCR53c406a_intr(void *dev_id)
-{
- DEB(unsigned char fifo_size;
- )
- DEB(unsigned char seq_reg;
- )
- unsigned char status, int_reg;
-#if USE_PIO
- unsigned char pio_status;
- struct scatterlist *sg;
- int i;
-#endif
-
- VDEB(printk("NCR53c406a_intr called\n"));
-
-#if USE_PIO
- REG1;
- pio_status = inb(PIO_STATUS);
-#endif
- REG0;
- status = inb(STAT_REG);
- DEB(seq_reg = inb(SEQ_REG));
- int_reg = inb(INT_REG);
- DEB(fifo_size = inb(FIFO_FLAGS) & 0x1f);
-
-#if NCR53C406A_DEBUG
- printk("status=%02x, seq_reg=%02x, int_reg=%02x, fifo_size=%02x", status, seq_reg, int_reg, fifo_size);
-#if (USE_DMA)
- printk("\n");
-#else
- printk(", pio=%02x\n", pio_status);
-#endif /* USE_DMA */
-#endif /* NCR53C406A_DEBUG */
-
- if (int_reg & 0x80) { /* SCSI reset intr */
- rtrc(3);
- DEB(printk("NCR53c406a: reset intr received\n"));
- current_SC->SCp.phase = idle;
- current_SC->result = DID_RESET << 16;
- current_SC->scsi_done(current_SC);
- return;
- }
-#if USE_PIO
- if (pio_status & 0x80) {
- printk("NCR53C406A: Warning: PIO error!\n");
- current_SC->SCp.phase = idle;
- current_SC->result = DID_ERROR << 16;
- current_SC->scsi_done(current_SC);
- return;
- }
-#endif /* USE_PIO */
-
- if (status & 0x20) { /* Parity error */
- printk("NCR53c406a: Warning: parity error!\n");
- current_SC->SCp.phase = idle;
- current_SC->result = DID_PARITY << 16;
- current_SC->scsi_done(current_SC);
- return;
- }
-
- if (status & 0x40) { /* Gross error */
- printk("NCR53c406a: Warning: gross error!\n");
- current_SC->SCp.phase = idle;
- current_SC->result = DID_ERROR << 16;
- current_SC->scsi_done(current_SC);
- return;
- }
-
- if (int_reg & 0x20) { /* Disconnect */
- DEB(printk("NCR53c406a: disconnect intr received\n"));
- if (current_SC->SCp.phase != message_in) { /* Unexpected disconnect */
- current_SC->result = DID_NO_CONNECT << 16;
- } else { /* Command complete, return status and message */
- current_SC->result = (current_SC->SCp.Status & 0xff)
- | ((current_SC->SCp.Message & 0xff) << 8) | (DID_OK << 16);
- }
-
- rtrc(0);
- current_SC->SCp.phase = idle;
- current_SC->scsi_done(current_SC);
- return;
- }
-
- switch (status & 0x07) { /* scsi phase */
- case 0x00: /* DATA-OUT */
- if (int_reg & 0x10) { /* Target requesting info transfer */
- rtrc(5);
- current_SC->SCp.phase = data_out;
- VDEB(printk("NCR53c406a: Data-Out phase\n"));
- outb(FLUSH_FIFO, CMD_REG);
- LOAD_DMA_COUNT(scsi_bufflen(current_SC)); /* Max transfer size */
-#if USE_DMA /* No s/g support for DMA */
- NCR53c406a_dma_write(scsi_sglist(current_SC),
- scsdi_bufflen(current_SC));
-
-#endif /* USE_DMA */
- outb(TRANSFER_INFO | DMA_OP, CMD_REG);
-#if USE_PIO
- scsi_for_each_sg(current_SC, sg, scsi_sg_count(current_SC), i) {
- NCR53c406a_pio_write(sg_virt(sg), sg->length);
- }
- REG0;
-#endif /* USE_PIO */
- }
- break;
-
- case 0x01: /* DATA-IN */
- if (int_reg & 0x10) { /* Target requesting info transfer */
- rtrc(6);
- current_SC->SCp.phase = data_in;
- VDEB(printk("NCR53c406a: Data-In phase\n"));
- outb(FLUSH_FIFO, CMD_REG);
- LOAD_DMA_COUNT(scsi_bufflen(current_SC)); /* Max transfer size */
-#if USE_DMA /* No s/g support for DMA */
- NCR53c406a_dma_read(scsi_sglist(current_SC),
- scsdi_bufflen(current_SC));
-#endif /* USE_DMA */
- outb(TRANSFER_INFO | DMA_OP, CMD_REG);
-#if USE_PIO
- scsi_for_each_sg(current_SC, sg, scsi_sg_count(current_SC), i) {
- NCR53c406a_pio_read(sg_virt(sg), sg->length);
- }
- REG0;
-#endif /* USE_PIO */
- }
- break;
-
- case 0x02: /* COMMAND */
- current_SC->SCp.phase = command_ph;
- printk("NCR53c406a: Warning: Unknown interrupt occurred in command phase!\n");
- break;
-
- case 0x03: /* STATUS */
- rtrc(7);
- current_SC->SCp.phase = status_ph;
- VDEB(printk("NCR53c406a: Status phase\n"));
- outb(FLUSH_FIFO, CMD_REG);
- outb(INIT_CMD_COMPLETE, CMD_REG);
- break;
-
- case 0x04: /* Reserved */
- case 0x05: /* Reserved */
- printk("NCR53c406a: WARNING: Reserved phase!!!\n");
- break;
-
- case 0x06: /* MESSAGE-OUT */
- DEB(printk("NCR53c406a: Message-Out phase\n"));
- current_SC->SCp.phase = message_out;
- outb(SET_ATN, CMD_REG); /* Reject the message */
- outb(MSG_ACCEPT, CMD_REG);
- break;
-
- case 0x07: /* MESSAGE-IN */
- rtrc(4);
- VDEB(printk("NCR53c406a: Message-In phase\n"));
- current_SC->SCp.phase = message_in;
-
- current_SC->SCp.Status = inb(SCSI_FIFO);
- current_SC->SCp.Message = inb(SCSI_FIFO);
-
- VDEB(printk("SCSI FIFO size=%d\n", inb(FIFO_FLAGS) & 0x1f));
- DEB(printk("Status = %02x Message = %02x\n", current_SC->SCp.Status, current_SC->SCp.Message));
-
- if (current_SC->SCp.Message == SAVE_POINTERS || current_SC->SCp.Message == DISCONNECT) {
- outb(SET_ATN, CMD_REG); /* Reject message */
- DEB(printk("Discarding SAVE_POINTERS message\n"));
- }
- outb(MSG_ACCEPT, CMD_REG);
- break;
- }
-}
-
-#ifndef IRQ_LEV
-static int irq_probe(void)
-{
- int irqs, irq;
- unsigned long i;
-
- inb(INT_REG); /* clear the interrupt register */
- irqs = probe_irq_on();
-
- /* Invalid command will cause an interrupt */
- REG0;
- outb(0xff, CMD_REG);
-
- /* Wait for the interrupt to occur */
- i = jiffies + WATCHDOG;
- while (time_after(i, jiffies) && !(inb(STAT_REG) & 0x80))
- barrier();
- if (time_before_eq(i, jiffies)) { /* Timed out, must be hardware trouble */
- probe_irq_off(irqs);
- return -1;
- }
-
- irq = probe_irq_off(irqs);
-
- /* Kick the chip */
- outb(CHIP_RESET, CMD_REG);
- outb(SCSI_NOP, CMD_REG);
- chip_init();
-
- return irq;
-}
-#endif /* IRQ_LEV */
-
-static void chip_init(void)
-{
- REG1;
-#if USE_DMA
- outb(0x00, PIO_STATUS);
-#else /* USE_PIO */
- outb(0x01, PIO_STATUS);
-#endif
- outb(0x00, PIO_FLAG);
-
- outb(C4_IMG, CONFIG4); /* REG0; */
- outb(C3_IMG, CONFIG3);
- outb(C2_IMG, CONFIG2);
- outb(C1_IMG, CONFIG1);
-
- outb(0x05, CLKCONV); /* clock conversion factor */
- outb(0x9C, SRTIMOUT); /* Selection timeout */
- outb(0x05, SYNCPRD); /* Synchronous transfer period */
- outb(SYNC_MODE, SYNCOFF); /* synchronous mode */
-}
-
-static void __init calc_port_addr(void)
-{
- /* Control Register Set 0 */
- TC_LSB = (port_base + 0x00);
- TC_MSB = (port_base + 0x01);
- SCSI_FIFO = (port_base + 0x02);
- CMD_REG = (port_base + 0x03);
- STAT_REG = (port_base + 0x04);
- DEST_ID = (port_base + 0x04);
- INT_REG = (port_base + 0x05);
- SRTIMOUT = (port_base + 0x05);
- SEQ_REG = (port_base + 0x06);
- SYNCPRD = (port_base + 0x06);
- FIFO_FLAGS = (port_base + 0x07);
- SYNCOFF = (port_base + 0x07);
- CONFIG1 = (port_base + 0x08);
- CLKCONV = (port_base + 0x09);
- /* TESTREG = (port_base+0x0A); */
- CONFIG2 = (port_base + 0x0B);
- CONFIG3 = (port_base + 0x0C);
- CONFIG4 = (port_base + 0x0D);
- TC_HIGH = (port_base + 0x0E);
- /* FIFO_BOTTOM = (port_base+0x0F); */
-
- /* Control Register Set 1 */
- /* JUMPER_SENSE = (port_base+0x00); */
- /* SRAM_PTR = (port_base+0x01); */
- /* SRAM_DATA = (port_base+0x02); */
- PIO_FIFO = (port_base + 0x04);
- /* PIO_FIFO1 = (port_base+0x05); */
- /* PIO_FIFO2 = (port_base+0x06); */
- /* PIO_FIFO3 = (port_base+0x07); */
- PIO_STATUS = (port_base + 0x08);
- /* ATA_CMD = (port_base+0x09); */
- /* ATA_ERR = (port_base+0x0A); */
- PIO_FLAG = (port_base + 0x0B);
- CONFIG5 = (port_base + 0x0D);
- /* SIGNATURE = (port_base+0x0E); */
- /* CONFIG6 = (port_base+0x0F); */
-}
-
-MODULE_LICENSE("GPL");
-
-/* NOTE: scatter-gather support only works in PIO mode.
- * Use SG_NONE if DMA mode is enabled!
- */
-
-static struct scsi_host_template driver_template =
-{
- .proc_name = "NCR53c406a" /* proc_name */,
- .name = "NCR53c406a" /* name */,
- .detect = NCR53c406a_detect /* detect */,
- .release = NCR53c406a_release,
- .info = NCR53c406a_info /* info */,
- .queuecommand = NCR53c406a_queue /* queuecommand */,
- .eh_host_reset_handler = NCR53c406a_host_reset /* reset */,
- .bios_param = NCR53c406a_biosparm /* biosparm */,
- .can_queue = 1 /* can_queue */,
- .this_id = 7 /* SCSI ID of the chip */,
- .sg_tablesize = 32 /*SG_ALL*/ /*SG_NONE*/,
- .unchecked_isa_dma = 1 /* unchecked_isa_dma */,
- .use_clustering = ENABLE_CLUSTERING,
-};
-
-#include "scsi_module.c"
-
-/*
- * Overrides for Emacs so that we get a uniform tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only. This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-indent-level: 4
- * c-brace-imaginary-offset: 0
- * c-brace-offset: -4
- * c-argdecl-indent: 4
- * c-label-offset: -4
- * c-continued-statement-offset: 4
- * c-continued-brace-offset: 0
- * indent-tabs-mode: nil
- * tab-width: 8
- * End:
- */
projects / linux-2.6-microblaze.git / commitdiff