+++ /dev/null
-/*
- * Trantor T128/T128F/T228 driver
- * Note : architecturally, the T100 and T130 are different and won't
- * work
- *
- * Copyright 1993, Drew Eckhardt
- * Visionary Computing
- * (Unix and Linux consulting and custom programming)
- * drew@colorado.edu
- * +1 (303) 440-4894
- *
- * For more information, please consult
- *
- * Trantor Systems, Ltd.
- * T128/T128F/T228 SCSI Host Adapter
- * Hardware Specifications
- *
- * Trantor Systems, Ltd.
- * 5415 Randall Place
- * Fremont, CA 94538
- * 1+ (415) 770-1400, FAX 1+ (415) 770-9910
- */
-
-/*
- * The card is detected and initialized in one of several ways :
- * 1. Autoprobe (default) - since the board is memory mapped,
- * a BIOS signature is scanned for to locate the registers.
- * An interrupt is triggered to autoprobe for the interrupt
- * line.
- *
- * 2. With command line overrides - t128=address,irq may be
- * used on the LILO command line to override the defaults.
- *
- * 3. With the T128_OVERRIDE compile time define. This is
- * specified as an array of address, irq tuples. Ie, for
- * one board at the default 0xcc000 address, IRQ5, I could say
- * -DT128_OVERRIDE={{0xcc000, 5}}
- *
- * Note that if the override methods are used, place holders must
- * be specified for other boards in the system.
- *
- * T128/T128F jumper/dipswitch settings (note : on my sample, the switches
- * were epoxy'd shut, meaning I couldn't change the 0xcc000 base address) :
- *
- * T128 Sw7 Sw8 Sw6 = 0ws Sw5 = boot
- * T128F Sw6 Sw7 Sw5 = 0ws Sw4 = boot Sw8 = floppy disable
- * cc000 off off
- * c8000 off on
- * dc000 on off
- * d8000 on on
- *
- *
- * Interrupts
- * There is a 12 pin jumper block, jp1, numbered as follows :
- * T128 (JP1) T128F (J5)
- * 2 4 6 8 10 12 11 9 7 5 3 1
- * 1 3 5 7 9 11 12 10 8 6 4 2
- *
- * 3 2-4
- * 5 1-3
- * 7 3-5
- * T128F only
- * 10 8-10
- * 12 7-9
- * 14 10-12
- * 15 9-11
- */
-
-#include <linux/io.h>
-#include <linux/blkdev.h>
-#include <linux/interrupt.h>
-#include <linux/init.h>
-#include <linux/module.h>
-
-#include <scsi/scsi_host.h>
-#include "t128.h"
-#include "NCR5380.h"
-
-static struct override {
- unsigned long address;
- int irq;
-} overrides
-#ifdef T128_OVERRIDE
- [] __initdata = T128_OVERRIDE;
-#else
- [4] __initdata = {{0, IRQ_AUTO}, {0, IRQ_AUTO},
- {0 ,IRQ_AUTO}, {0, IRQ_AUTO}};
-#endif
-
-#define NO_OVERRIDES ARRAY_SIZE(overrides)
-
-static struct base {
- unsigned int address;
- int noauto;
-} bases[] __initdata = {
- { 0xcc000, 0}, { 0xc8000, 0}, { 0xdc000, 0}, { 0xd8000, 0}
-};
-
-#define NO_BASES ARRAY_SIZE(bases)
-
-static struct signature {
- const char *string;
- int offset;
-} signatures[] __initdata = {
-{"TSROM: SCSI BIOS, Version 1.12", 0x36},
-};
-
-#define NO_SIGNATURES ARRAY_SIZE(signatures)
-
-#ifndef MODULE
-/*
- * Function : t128_setup(char *str, int *ints)
- *
- * Purpose : LILO command line initialization of the overrides array,
- *
- * Inputs : str - unused, ints - array of integer parameters with ints[0]
- * equal to the number of ints.
- *
- */
-
-static int __init t128_setup(char *str)
-{
- static int commandline_current;
- int i;
- int ints[10];
-
- get_options(str, ARRAY_SIZE(ints), ints);
- if (ints[0] != 2)
- printk("t128_setup : usage t128=address,irq\n");
- else
- if (commandline_current < NO_OVERRIDES) {
- overrides[commandline_current].address = ints[1];
- overrides[commandline_current].irq = ints[2];
- for (i = 0; i < NO_BASES; ++i)
- if (bases[i].address == ints[1]) {
- bases[i].noauto = 1;
- break;
- }
- ++commandline_current;
- }
- return 1;
-}
-
-__setup("t128=", t128_setup);
-#endif
-
-/*
- * Function : int t128_detect(struct scsi_host_template * tpnt)
- *
- * Purpose : detects and initializes T128,T128F, or T228 controllers
- * that were autoprobed, overridden on the LILO command line,
- * or specified at compile time.
- *
- * Inputs : tpnt - template for this SCSI adapter.
- *
- * Returns : 1 if a host adapter was found, 0 if not.
- *
- */
-
-static int __init t128_detect(struct scsi_host_template *tpnt)
-{
- static int current_override, current_base;
- struct Scsi_Host *instance;
- unsigned long base;
- void __iomem *p;
- int sig, count;
-
- for (count = 0; current_override < NO_OVERRIDES; ++current_override) {
- base = 0;
- p = NULL;
-
- if (overrides[current_override].address) {
- base = overrides[current_override].address;
- p = ioremap(bases[current_base].address, 0x2000);
- if (!p)
- base = 0;
- } else
- for (; !base && (current_base < NO_BASES); ++current_base) {
- dprintk(NDEBUG_INIT, "t128: probing address 0x%08x\n",
- bases[current_base].address);
- if (bases[current_base].noauto)
- continue;
- p = ioremap(bases[current_base].address, 0x2000);
- if (!p)
- continue;
- for (sig = 0; sig < NO_SIGNATURES; ++sig)
- if (check_signature(p + signatures[sig].offset,
- signatures[sig].string,
- strlen(signatures[sig].string))) {
- base = bases[current_base].address;
- dprintk(NDEBUG_INIT, "t128: detected board\n");
- goto found;
- }
- iounmap(p);
- }
-
- dprintk(NDEBUG_INIT, "t128: base = 0x%08x\n", (unsigned int)base);
-
- if (!base)
- break;
-
-found:
- instance = scsi_register (tpnt, sizeof(struct NCR5380_hostdata));
- if(instance == NULL)
- goto out_unmap;
-
- instance->base = base;
- ((struct NCR5380_hostdata *)instance->hostdata)->base = p;
-
- if (NCR5380_init(instance, FLAG_DMA_FIXUP | FLAG_LATE_DMA_SETUP))
- goto out_unregister;
-
- NCR5380_maybe_reset_bus(instance);
-
- if (overrides[current_override].irq != IRQ_AUTO)
- instance->irq = overrides[current_override].irq;
- else
- instance->irq = NCR5380_probe_irq(instance, T128_IRQS);
-
- /* Compatibility with documented NCR5380 kernel parameters */
- if (instance->irq == 255)
- instance->irq = NO_IRQ;
-
- if (instance->irq != NO_IRQ)
- if (request_irq(instance->irq, t128_intr, 0, "t128",
- instance)) {
- printk("scsi%d : IRQ%d not free, interrupts disabled\n",
- instance->host_no, instance->irq);
- instance->irq = NO_IRQ;
- }
-
- if (instance->irq == NO_IRQ) {
- printk("scsi%d : interrupts not enabled. for better interactive performance,\n", instance->host_no);
- printk("scsi%d : please jumper the board for a free IRQ.\n", instance->host_no);
- }
-
- dprintk(NDEBUG_INIT, "scsi%d: irq = %d\n",
- instance->host_no, instance->irq);
-
- ++current_override;
- ++count;
- }
- return count;
-
-out_unregister:
- scsi_unregister(instance);
-out_unmap:
- iounmap(p);
- return count;
-}
-
-static int t128_release(struct Scsi_Host *shost)
-{
- struct NCR5380_hostdata *hostdata = shost_priv(shost);
-
- if (shost->irq != NO_IRQ)
- free_irq(shost->irq, shost);
- NCR5380_exit(shost);
- scsi_unregister(shost);
- iounmap(hostdata->base);
- return 0;
-}
-
-/*
- * Function : int t128_biosparam(Disk * disk, struct block_device *dev, int *ip)
- *
- * Purpose : Generates a BIOS / DOS compatible H-C-S mapping for
- * the specified device / size.
- *
- * Inputs : size = size of device in sectors (512 bytes), dev = block device
- * major / minor, ip[] = {heads, sectors, cylinders}
- *
- * Returns : always 0 (success), initializes ip
- *
- */
-
-/*
- * XXX Most SCSI boards use this mapping, I could be incorrect. Some one
- * using hard disks on a trantor should verify that this mapping corresponds
- * to that used by the BIOS / ASPI driver by running the linux fdisk program
- * and matching the H_C_S coordinates to what DOS uses.
- */
-
-static int t128_biosparam(struct scsi_device *sdev, struct block_device *bdev,
- sector_t capacity, int *ip)
-{
- ip[0] = 64;
- ip[1] = 32;
- ip[2] = capacity >> 11;
- return 0;
-}
-
-/*
- * Function : int t128_pread (struct Scsi_Host *instance,
- * unsigned char *dst, int len)
- *
- * Purpose : Fast 5380 pseudo-dma read function, transfers len bytes to
- * dst
- *
- * Inputs : dst = destination, len = length in bytes
- *
- * Returns : 0 on success, non zero on a failure such as a watchdog
- * timeout.
- */
-
-static inline int t128_pread(struct Scsi_Host *instance,
- unsigned char *dst, int len)
-{
- struct NCR5380_hostdata *hostdata = shost_priv(instance);
- void __iomem *reg, *base = hostdata->base;
- unsigned char *d = dst;
- register int i = len;
-
- reg = base + T_DATA_REG_OFFSET;
-
-#if 0
- for (; i; --i) {
- while (!(readb(base+T_STATUS_REG_OFFSET) & T_ST_RDY)) barrier();
-#else
- while (!(readb(base+T_STATUS_REG_OFFSET) & T_ST_RDY)) barrier();
- for (; i; --i) {
-#endif
- *d++ = readb(reg);
- }
-
- if (readb(base + T_STATUS_REG_OFFSET) & T_ST_TIM) {
- unsigned char tmp;
- void __iomem *foo = base + T_CONTROL_REG_OFFSET;
- tmp = readb(foo);
- writeb(tmp | T_CR_CT, foo);
- writeb(tmp, foo);
- printk("scsi%d : watchdog timer fired in NCR5380_pread()\n",
- instance->host_no);
- return -1;
- } else
- return 0;
-}
-
-/*
- * Function : int t128_pwrite (struct Scsi_Host *instance,
- * unsigned char *src, int len)
- *
- * Purpose : Fast 5380 pseudo-dma write function, transfers len bytes from
- * src
- *
- * Inputs : src = source, len = length in bytes
- *
- * Returns : 0 on success, non zero on a failure such as a watchdog
- * timeout.
- */
-
-static inline int t128_pwrite(struct Scsi_Host *instance,
- unsigned char *src, int len)
-{
- struct NCR5380_hostdata *hostdata = shost_priv(instance);
- void __iomem *reg, *base = hostdata->base;
- unsigned char *s = src;
- register int i = len;
-
- reg = base + T_DATA_REG_OFFSET;
-
-#if 0
- for (; i; --i) {
- while (!(readb(base+T_STATUS_REG_OFFSET) & T_ST_RDY)) barrier();
-#else
- while (!(readb(base+T_STATUS_REG_OFFSET) & T_ST_RDY)) barrier();
- for (; i; --i) {
-#endif
- writeb(*s++, reg);
- }
-
- if (readb(base + T_STATUS_REG_OFFSET) & T_ST_TIM) {
- unsigned char tmp;
- void __iomem *foo = base + T_CONTROL_REG_OFFSET;
- tmp = readb(foo);
- writeb(tmp | T_CR_CT, foo);
- writeb(tmp, foo);
- printk("scsi%d : watchdog timer fired in NCR5380_pwrite()\n",
- instance->host_no);
- return -1;
- } else
- return 0;
-}
-
-MODULE_LICENSE("GPL");
-
-#include "NCR5380.c"
-
-static struct scsi_host_template driver_template = {
- .name = "Trantor T128/T128F/T228",
- .detect = t128_detect,
- .release = t128_release,
- .proc_name = "t128",
- .info = t128_info,
- .queuecommand = t128_queue_command,
- .eh_abort_handler = t128_abort,
- .eh_bus_reset_handler = t128_bus_reset,
- .bios_param = t128_biosparam,
- .can_queue = 32,
- .this_id = 7,
- .sg_tablesize = SG_ALL,
- .cmd_per_lun = 2,
- .use_clustering = DISABLE_CLUSTERING,
- .cmd_size = NCR5380_CMD_SIZE,
- .max_sectors = 128,
-};
-#include "scsi_module.c"
+++ /dev/null
-/*
- * Trantor T128/T128F/T228 defines
- * Note : architecturally, the T100 and T128 are different and won't work
- *
- * Copyright 1993, Drew Eckhardt
- * Visionary Computing
- * (Unix and Linux consulting and custom programming)
- * drew@colorado.edu
- * +1 (303) 440-4894
- *
- * For more information, please consult
- *
- * Trantor Systems, Ltd.
- * T128/T128F/T228 SCSI Host Adapter
- * Hardware Specifications
- *
- * Trantor Systems, Ltd.
- * 5415 Randall Place
- * Fremont, CA 94538
- * 1+ (415) 770-1400, FAX 1+ (415) 770-9910
- */
-
-#ifndef T128_H
-#define T128_H
-
-/*
- * The trantor boards are memory mapped. They use an NCR5380 or
- * equivalent (my sample board had part second sourced from ZILOG).
- * NCR's recommended "Pseudo-DMA" architecture is used, where
- * a PAL drives the DMA signals on the 5380 allowing fast, blind
- * transfers with proper handshaking.
- */
-
-/*
- * Note : a boot switch is provided for the purpose of informing the
- * firmware to boot or not boot from attached SCSI devices. So, I imagine
- * there are fewer people who've yanked the ROM like they do on the Seagate
- * to make bootup faster, and I'll probably use this for autodetection.
- */
-#define T_ROM_OFFSET 0
-
-/*
- * Note : my sample board *WAS NOT* populated with the SRAM, so this
- * can't be used for autodetection without a ROM present.
- */
-#define T_RAM_OFFSET 0x1800
-
-/*
- * All of the registers are allocated 32 bytes of address space, except
- * for the data register (read/write to/from the 5380 in pseudo-DMA mode)
- */
-#define T_CONTROL_REG_OFFSET 0x1c00 /* rw */
-#define T_CR_INT 0x10 /* Enable interrupts */
-#define T_CR_CT 0x02 /* Reset watchdog timer */
-
-#define T_STATUS_REG_OFFSET 0x1c20 /* ro */
-#define T_ST_BOOT 0x80 /* Boot switch */
-#define T_ST_S3 0x40 /* User settable switches, */
-#define T_ST_S2 0x20 /* read 0 when switch is on, 1 off */
-#define T_ST_S1 0x10
-#define T_ST_PS2 0x08 /* Set for Microchannel 228 */
-#define T_ST_RDY 0x04 /* 5380 DRQ */
-#define T_ST_TIM 0x02 /* indicates 40us watchdog timer fired */
-#define T_ST_ZERO 0x01 /* Always zero */
-
-#define T_5380_OFFSET 0x1d00 /* 8 registers here, see NCR5380.h */
-
-#define T_DATA_REG_OFFSET 0x1e00 /* rw 512 bytes long */
-
-#define NCR5380_implementation_fields \
- void __iomem *base
-
-#define T128_address(reg) \
- (((struct NCR5380_hostdata *)shost_priv(instance))->base + T_5380_OFFSET + ((reg) * 0x20))
-
-#define NCR5380_read(reg) readb(T128_address(reg))
-#define NCR5380_write(reg, value) writeb((value),(T128_address(reg)))
-
-#define NCR5380_dma_xfer_len(instance, cmd, phase) (cmd->transfersize)
-#define NCR5380_dma_recv_setup t128_pread
-#define NCR5380_dma_send_setup t128_pwrite
-#define NCR5380_dma_residual(instance) (0)
-
-#define NCR5380_intr t128_intr
-#define NCR5380_queue_command t128_queue_command
-#define NCR5380_abort t128_abort
-#define NCR5380_bus_reset t128_bus_reset
-#define NCR5380_info t128_info
-
-#define NCR5380_io_delay(x) udelay(x)
-
-/* 15 14 12 10 7 5 3
- 1101 0100 1010 1000 */
-
-#define T128_IRQS 0xc4a8
-
-#endif /* T128_H */
projects / cascardo / linux.git / commitdiff