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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/scsi/g_NCR5380.c
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'drivers/scsi/g_NCR5380.c')
-rw-r--r--drivers/scsi/g_NCR5380.c947
1 files changed, 947 insertions, 0 deletions
diff --git a/drivers/scsi/g_NCR5380.c b/drivers/scsi/g_NCR5380.c
new file mode 100644
index 00000000000..ca9d5bd26ca
--- /dev/null
+++ b/drivers/scsi/g_NCR5380.c
@@ -0,0 +1,947 @@
+/*
+ * Generic Generic NCR5380 driver
+ *
+ * Copyright 1993, Drew Eckhardt
+ * Visionary Computing
+ * (Unix and Linux consulting and custom programming)
+ * drew@colorado.edu
+ * +1 (303) 440-4894
+ *
+ * NCR53C400 extensions (c) 1994,1995,1996, Kevin Lentin
+ * K.Lentin@cs.monash.edu.au
+ *
+ * NCR53C400A extensions (c) 1996, Ingmar Baumgart
+ * ingmar@gonzo.schwaben.de
+ *
+ * DTC3181E extensions (c) 1997, Ronald van Cuijlenborg
+ * ronald.van.cuijlenborg@tip.nl or nutty@dds.nl
+ *
+ * Added ISAPNP support for DTC436 adapters,
+ * Thomas Sailer, sailer@ife.ee.ethz.ch
+ *
+ * ALPHA RELEASE 1.
+ *
+ * For more information, please consult
+ *
+ * NCR 5380 Family
+ * SCSI Protocol Controller
+ * Databook
+ *
+ * NCR Microelectronics
+ * 1635 Aeroplaza Drive
+ * Colorado Springs, CO 80916
+ * 1+ (719) 578-3400
+ * 1+ (800) 334-5454
+ */
+
+/*
+ * TODO : flesh out DMA support, find some one actually using this (I have
+ * a memory mapped Trantor board that works fine)
+ */
+
+/*
+ * Options :
+ *
+ * PARITY - enable parity checking. Not supported.
+ *
+ * SCSI2 - enable support for SCSI-II tagged queueing. Untested.
+ *
+ * USLEEP - enable support for devices that don't disconnect. Untested.
+ *
+ * The card is detected and initialized in one of several ways :
+ * 1. With command line overrides - NCR5380=port,irq may be
+ * used on the LILO command line to override the defaults.
+ *
+ * 2. With the GENERIC_NCR5380_OVERRIDE compile time define. This is
+ * specified as an array of address, irq, dma, board tuples. Ie, for
+ * one board at 0x350, IRQ5, no dma, I could say
+ * -DGENERIC_NCR5380_OVERRIDE={{0xcc000, 5, DMA_NONE, BOARD_NCR5380}}
+ *
+ * -1 should be specified for no or DMA interrupt, -2 to autoprobe for an
+ * IRQ line if overridden on the command line.
+ *
+ * 3. When included as a module, with arguments passed on the command line:
+ * ncr_irq=xx the interrupt
+ * ncr_addr=xx the port or base address (for port or memory
+ * mapped, resp.)
+ * ncr_dma=xx the DMA
+ * ncr_5380=1 to set up for a NCR5380 board
+ * ncr_53c400=1 to set up for a NCR53C400 board
+ * e.g.
+ * modprobe g_NCR5380 ncr_irq=5 ncr_addr=0x350 ncr_5380=1
+ * for a port mapped NCR5380 board or
+ * modprobe g_NCR5380 ncr_irq=255 ncr_addr=0xc8000 ncr_53c400=1
+ * for a memory mapped NCR53C400 board with interrupts disabled.
+ *
+ * 255 should be specified for no or DMA interrupt, 254 to autoprobe for an
+ * IRQ line if overridden on the command line.
+ *
+ */
+
+/*
+ * $Log: generic_NCR5380.c,v $
+ */
+
+/* settings for DTC3181E card with only Mustek scanner attached */
+#define USLEEP
+#define USLEEP_POLL 1
+#define USLEEP_SLEEP 20
+#define USLEEP_WAITLONG 500
+
+#define AUTOPROBE_IRQ
+#define AUTOSENSE
+
+#include <linux/config.h>
+
+#ifdef CONFIG_SCSI_GENERIC_NCR53C400
+#define NCR53C400_PSEUDO_DMA 1
+#define PSEUDO_DMA
+#define NCR53C400
+#define NCR5380_STATS
+#undef NCR5380_STAT_LIMIT
+#endif
+
+#include <asm/system.h>
+#include <asm/io.h>
+#include <linux/signal.h>
+#include <linux/sched.h>
+#include <linux/blkdev.h>
+#include "scsi.h"
+#include <scsi/scsi_host.h>
+#include "g_NCR5380.h"
+#include "NCR5380.h"
+#include <linux/stat.h>
+#include <linux/init.h>
+#include <linux/ioport.h>
+#include <linux/isapnp.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+
+#define NCR_NOT_SET 0
+static int ncr_irq = NCR_NOT_SET;
+static int ncr_dma = NCR_NOT_SET;
+static int ncr_addr = NCR_NOT_SET;
+static int ncr_5380 = NCR_NOT_SET;
+static int ncr_53c400 = NCR_NOT_SET;
+static int ncr_53c400a = NCR_NOT_SET;
+static int dtc_3181e = NCR_NOT_SET;
+
+static struct override {
+ NCR5380_implementation_fields;
+ int irq;
+ int dma;
+ int board; /* Use NCR53c400, Ricoh, etc. extensions ? */
+} overrides
+#ifdef GENERIC_NCR5380_OVERRIDE
+[] __initdata = GENERIC_NCR5380_OVERRIDE;
+#else
+[1] __initdata = { { 0,},};
+#endif
+
+
+#define NO_OVERRIDES (sizeof(overrides) / sizeof(struct override))
+
+#ifndef MODULE
+
+/**
+ * internal_setup - handle lilo command string override
+ * @board: BOARD_* identifier for the board
+ * @str: unused
+ * @ints: numeric parameters
+ *
+ * Do LILO command line initialization of the overrides array. Display
+ * errors when needed
+ *
+ * Locks: none
+ */
+
+static void __init internal_setup(int board, char *str, int *ints)
+{
+ static int commandline_current = 0;
+ switch (board) {
+ case BOARD_NCR5380:
+ if (ints[0] != 2 && ints[0] != 3) {
+ printk(KERN_ERR "generic_NCR5380_setup : usage ncr5380=" STRVAL(NCR5380_map_name) ",irq,dma\n");
+ return;
+ }
+ break;
+ case BOARD_NCR53C400:
+ if (ints[0] != 2) {
+ printk(KERN_ERR "generic_NCR53C400_setup : usage ncr53c400=" STRVAL(NCR5380_map_name) ",irq\n");
+ return;
+ }
+ break;
+ case BOARD_NCR53C400A:
+ if (ints[0] != 2) {
+ printk(KERN_ERR "generic_NCR53C400A_setup : usage ncr53c400a=" STRVAL(NCR5380_map_name) ",irq\n");
+ return;
+ }
+ break;
+ case BOARD_DTC3181E:
+ if (ints[0] != 2) {
+ printk("generic_DTC3181E_setup : usage dtc3181e=" STRVAL(NCR5380_map_name) ",irq\n");
+ return;
+ }
+ break;
+ }
+
+ if (commandline_current < NO_OVERRIDES) {
+ overrides[commandline_current].NCR5380_map_name = (NCR5380_map_type) ints[1];
+ overrides[commandline_current].irq = ints[2];
+ if (ints[0] == 3)
+ overrides[commandline_current].dma = ints[3];
+ else
+ overrides[commandline_current].dma = DMA_NONE;
+ overrides[commandline_current].board = board;
+ ++commandline_current;
+ }
+}
+
+
+/**
+ * do_NCR53C80_setup - set up entry point
+ * @str: unused
+ *
+ * Setup function invoked at boot to parse the ncr5380= command
+ * line.
+ */
+
+static int __init do_NCR5380_setup(char *str)
+{
+ int ints[10];
+
+ get_options(str, sizeof(ints) / sizeof(int), ints);
+ internal_setup(BOARD_NCR5380, str, ints);
+ return 1;
+}
+
+/**
+ * do_NCR53C400_setup - set up entry point
+ * @str: unused
+ * @ints: integer parameters from kernel setup code
+ *
+ * Setup function invoked at boot to parse the ncr53c400= command
+ * line.
+ */
+
+static int __init do_NCR53C400_setup(char *str)
+{
+ int ints[10];
+
+ get_options(str, sizeof(ints) / sizeof(int), ints);
+ internal_setup(BOARD_NCR53C400, str, ints);
+ return 1;
+}
+
+/**
+ * do_NCR53C400A_setup - set up entry point
+ * @str: unused
+ * @ints: integer parameters from kernel setup code
+ *
+ * Setup function invoked at boot to parse the ncr53c400a= command
+ * line.
+ */
+
+static int __init do_NCR53C400A_setup(char *str)
+{
+ int ints[10];
+
+ get_options(str, sizeof(ints) / sizeof(int), ints);
+ internal_setup(BOARD_NCR53C400A, str, ints);
+ return 1;
+}
+
+/**
+ * do_DTC3181E_setup - set up entry point
+ * @str: unused
+ * @ints: integer parameters from kernel setup code
+ *
+ * Setup function invoked at boot to parse the dtc3181e= command
+ * line.
+ */
+
+static int __init do_DTC3181E_setup(char *str)
+{
+ int ints[10];
+
+ get_options(str, sizeof(ints) / sizeof(int), ints);
+ internal_setup(BOARD_DTC3181E, str, ints);
+ return 1;
+}
+
+#endif
+
+/**
+ * generic_NCR5380_detect - look for NCR5380 controllers
+ * @tpnt: the scsi template
+ *
+ * Scan for the present of NCR5380, NCR53C400, NCR53C400A, DTC3181E
+ * and DTC436(ISAPnP) controllers. If overrides have been set we use
+ * them.
+ *
+ * The caller supplied NCR5380_init function is invoked from here, before
+ * the interrupt line is taken.
+ *
+ * Locks: none
+ */
+
+int __init generic_NCR5380_detect(Scsi_Host_Template * tpnt)
+{
+ static int current_override = 0;
+ int count, i;
+ unsigned int *ports;
+ unsigned long region_size = 16;
+ static unsigned int __initdata ncr_53c400a_ports[] = {
+ 0x280, 0x290, 0x300, 0x310, 0x330, 0x340, 0x348, 0x350, 0
+ };
+ static unsigned int __initdata dtc_3181e_ports[] = {
+ 0x220, 0x240, 0x280, 0x2a0, 0x2c0, 0x300, 0x320, 0x340, 0
+ };
+ int flags = 0;
+ struct Scsi_Host *instance;
+
+ if (ncr_irq != NCR_NOT_SET)
+ overrides[0].irq = ncr_irq;
+ if (ncr_dma != NCR_NOT_SET)
+ overrides[0].dma = ncr_dma;
+ if (ncr_addr != NCR_NOT_SET)
+ overrides[0].NCR5380_map_name = (NCR5380_map_type) ncr_addr;
+ if (ncr_5380 != NCR_NOT_SET)
+ overrides[0].board = BOARD_NCR5380;
+ else if (ncr_53c400 != NCR_NOT_SET)
+ overrides[0].board = BOARD_NCR53C400;
+ else if (ncr_53c400a != NCR_NOT_SET)
+ overrides[0].board = BOARD_NCR53C400A;
+ else if (dtc_3181e != NCR_NOT_SET)
+ overrides[0].board = BOARD_DTC3181E;
+
+ if (!current_override && isapnp_present()) {
+ struct pnp_dev *dev = NULL;
+ count = 0;
+ while ((dev = pnp_find_dev(NULL, ISAPNP_VENDOR('D', 'T', 'C'), ISAPNP_FUNCTION(0x436e), dev))) {
+ if (count >= NO_OVERRIDES)
+ break;
+ if (pnp_device_attach(dev) < 0) {
+ printk(KERN_ERR "dtc436e probe: attach failed\n");
+ continue;
+ }
+ if (pnp_activate_dev(dev) < 0) {
+ printk(KERN_ERR "dtc436e probe: activate failed\n");
+ pnp_device_detach(dev);
+ continue;
+ }
+ if (!pnp_port_valid(dev, 0)) {
+ printk(KERN_ERR "dtc436e probe: no valid port\n");
+ pnp_device_detach(dev);
+ continue;
+ }
+ if (pnp_irq_valid(dev, 0))
+ overrides[count].irq = pnp_irq(dev, 0);
+ else
+ overrides[count].irq = SCSI_IRQ_NONE;
+ if (pnp_dma_valid(dev, 0))
+ overrides[count].dma = pnp_dma(dev, 0);
+ else
+ overrides[count].dma = DMA_NONE;
+ overrides[count].NCR5380_map_name = (NCR5380_map_type) pnp_port_start(dev, 0);
+ overrides[count].board = BOARD_DTC3181E;
+ count++;
+ }
+ }
+
+ tpnt->proc_name = "g_NCR5380";
+
+ for (count = 0; current_override < NO_OVERRIDES; ++current_override) {
+ if (!(overrides[current_override].NCR5380_map_name))
+ continue;
+
+ ports = NULL;
+ switch (overrides[current_override].board) {
+ case BOARD_NCR5380:
+ flags = FLAG_NO_PSEUDO_DMA;
+ break;
+ case BOARD_NCR53C400:
+ flags = FLAG_NCR53C400;
+ break;
+ case BOARD_NCR53C400A:
+ flags = FLAG_NO_PSEUDO_DMA;
+ ports = ncr_53c400a_ports;
+ break;
+ case BOARD_DTC3181E:
+ flags = FLAG_NO_PSEUDO_DMA | FLAG_DTC3181E;
+ ports = dtc_3181e_ports;
+ break;
+ }
+
+#ifndef CONFIG_SCSI_G_NCR5380_MEM
+ if (ports) {
+ /* wakeup sequence for the NCR53C400A and DTC3181E */
+
+ /* Disable the adapter and look for a free io port */
+ outb(0x59, 0x779);
+ outb(0xb9, 0x379);
+ outb(0xc5, 0x379);
+ outb(0xae, 0x379);
+ outb(0xa6, 0x379);
+ outb(0x00, 0x379);
+
+ if (overrides[current_override].NCR5380_map_name != PORT_AUTO)
+ for (i = 0; ports[i]; i++) {
+ if (!request_region(ports[i], 16, "ncr53c80"))
+ continue;
+ if (overrides[current_override].NCR5380_map_name == ports[i])
+ break;
+ release_region(ports[i], 16);
+ } else
+ for (i = 0; ports[i]; i++) {
+ if (!request_region(ports[i], 16, "ncr53c80"))
+ continue;
+ if (inb(ports[i]) == 0xff)
+ break;
+ release_region(ports[i], 16);
+ }
+ if (ports[i]) {
+ /* At this point we have our region reserved */
+ outb(0x59, 0x779);
+ outb(0xb9, 0x379);
+ outb(0xc5, 0x379);
+ outb(0xae, 0x379);
+ outb(0xa6, 0x379);
+ outb(0x80 | i, 0x379); /* set io port to be used */
+ outb(0xc0, ports[i] + 9);
+ if (inb(ports[i] + 9) != 0x80)
+ continue;
+ else
+ overrides[current_override].NCR5380_map_name = ports[i];
+ } else
+ continue;
+ }
+ else
+ {
+ /* Not a 53C400A style setup - just grab */
+ if(!(request_region(overrides[current_override].NCR5380_map_name, NCR5380_region_size, "ncr5380")))
+ continue;
+ region_size = NCR5380_region_size;
+ }
+#else
+ if(!request_mem_region(overrides[current_override].NCR5380_map_name, NCR5380_region_size, "ncr5380"))
+ continue;
+#endif
+ instance = scsi_register(tpnt, sizeof(struct NCR5380_hostdata));
+ if (instance == NULL) {
+#ifndef CONFIG_SCSI_G_NCR5380_MEM
+ release_region(overrides[current_override].NCR5380_map_name, region_size);
+#else
+ release_mem_region(overrides[current_override].NCR5380_map_name, NCR5380_region_size);
+#endif
+ continue;
+ }
+
+ instance->NCR5380_instance_name = overrides[current_override].NCR5380_map_name;
+#ifndef CONFIG_SCSI_G_NCR5380_MEM
+ instance->n_io_port = region_size;
+#endif
+
+ NCR5380_init(instance, flags);
+
+ if (overrides[current_override].irq != IRQ_AUTO)
+ instance->irq = overrides[current_override].irq;
+ else
+ instance->irq = NCR5380_probe_irq(instance, 0xffff);
+
+ if (instance->irq != SCSI_IRQ_NONE)
+ if (request_irq(instance->irq, generic_NCR5380_intr, SA_INTERRUPT, "NCR5380", instance)) {
+ printk(KERN_WARNING "scsi%d : IRQ%d not free, interrupts disabled\n", instance->host_no, instance->irq);
+ instance->irq = SCSI_IRQ_NONE;
+ }
+
+ if (instance->irq == SCSI_IRQ_NONE) {
+ printk(KERN_INFO "scsi%d : interrupts not enabled. for better interactive performance,\n", instance->host_no);
+ printk(KERN_INFO "scsi%d : please jumper the board for a free IRQ.\n", instance->host_no);
+ }
+
+ printk(KERN_INFO "scsi%d : at " STRVAL(NCR5380_map_name) " 0x%x", instance->host_no, (unsigned int) instance->NCR5380_instance_name);
+ if (instance->irq == SCSI_IRQ_NONE)
+ printk(" interrupts disabled");
+ else
+ printk(" irq %d", instance->irq);
+ printk(" options CAN_QUEUE=%d CMD_PER_LUN=%d release=%d", CAN_QUEUE, CMD_PER_LUN, GENERIC_NCR5380_PUBLIC_RELEASE);
+ NCR5380_print_options(instance);
+ printk("\n");
+
+ ++current_override;
+ ++count;
+ }
+ return count;
+}
+
+/**
+ * generic_NCR5380_info - reporting string
+ * @host: NCR5380 to report on
+ *
+ * Report driver information for the NCR5380
+ */
+
+const char *generic_NCR5380_info(struct Scsi_Host *host)
+{
+ static const char string[] = "Generic NCR5380/53C400 Driver";
+ return string;
+}
+
+/**
+ * generic_NCR5380_release_resources - free resources
+ * @instance: host adapter to clean up
+ *
+ * Free the generic interface resources from this adapter.
+ *
+ * Locks: none
+ */
+
+int generic_NCR5380_release_resources(struct Scsi_Host *instance)
+{
+ NCR5380_local_declare();
+ NCR5380_setup(instance);
+
+ if (instance->irq != SCSI_IRQ_NONE)
+ free_irq(instance->irq, NULL);
+ NCR5380_exit(instance);
+
+#ifndef CONFIG_SCSI_G_NCR5380_MEM
+ release_region(instance->NCR5380_instance_name, instance->n_io_port);
+#else
+ release_mem_region(instance->NCR5380_instance_name, NCR5380_region_size);
+#endif
+
+
+ return 0;
+}
+
+#ifdef BIOSPARAM
+/**
+ * generic_NCR5380_biosparam
+ * @disk: disk to compute geometry for
+ * @dev: device identifier for this disk
+ * @ip: sizes to fill in
+ *
+ * Generates a BIOS / DOS compatible H-C-S mapping for the specified
+ * device / size.
+ *
+ * XXX Most SCSI boards use this mapping, I could be incorrect. Someone
+ * 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.
+ *
+ * Locks: none
+ */
+
+static int
+generic_NCR5380_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;
+}
+#endif
+
+#if NCR53C400_PSEUDO_DMA
+
+/**
+ * NCR5380_pread - pseudo DMA read
+ * @instance: adapter to read from
+ * @dst: buffer to read into
+ * @len: buffer length
+ *
+ * Perform a psuedo DMA mode read from an NCR53C400 or equivalent
+ * controller
+ */
+
+static inline int NCR5380_pread(struct Scsi_Host *instance, unsigned char *dst, int len)
+{
+ int blocks = len / 128;
+ int start = 0;
+ int bl;
+
+ NCR5380_local_declare();
+ NCR5380_setup(instance);
+
+ NCR5380_write(C400_CONTROL_STATUS_REG, CSR_BASE | CSR_TRANS_DIR);
+ NCR5380_write(C400_BLOCK_COUNTER_REG, blocks);
+ while (1) {
+ if ((bl = NCR5380_read(C400_BLOCK_COUNTER_REG)) == 0) {
+ break;
+ }
+ if (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ) {
+ printk(KERN_ERR "53C400r: Got 53C80_IRQ start=%d, blocks=%d\n", start, blocks);
+ return -1;
+ }
+ while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY);
+
+#ifndef CONFIG_SCSI_G_NCR5380_MEM
+ {
+ int i;
+ for (i = 0; i < 128; i++)
+ dst[start + i] = NCR5380_read(C400_HOST_BUFFER);
+ }
+#else
+ /* implies CONFIG_SCSI_G_NCR5380_MEM */
+ isa_memcpy_fromio(dst + start, NCR53C400_host_buffer + NCR5380_map_name, 128);
+#endif
+ start += 128;
+ blocks--;
+ }
+
+ if (blocks) {
+ while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY)
+ {
+ // FIXME - no timeout
+ }
+
+#ifndef CONFIG_SCSI_G_NCR5380_MEM
+ {
+ int i;
+ for (i = 0; i < 128; i++)
+ dst[start + i] = NCR5380_read(C400_HOST_BUFFER);
+ }
+#else
+ /* implies CONFIG_SCSI_G_NCR5380_MEM */
+ isa_memcpy_fromio(dst + start, NCR53C400_host_buffer + NCR5380_map_name, 128);
+#endif
+ start += 128;
+ blocks--;
+ }
+
+ if (!(NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ))
+ printk("53C400r: no 53C80 gated irq after transfer");
+
+#if 0
+ /*
+ * DON'T DO THIS - THEY NEVER ARRIVE!
+ */
+ printk("53C400r: Waiting for 53C80 registers\n");
+ while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_53C80_REG)
+ ;
+#endif
+ if (!(NCR5380_read(BUS_AND_STATUS_REG) & BASR_END_DMA_TRANSFER))
+ printk(KERN_ERR "53C400r: no end dma signal\n");
+
+ NCR5380_write(MODE_REG, MR_BASE);
+ NCR5380_read(RESET_PARITY_INTERRUPT_REG);
+ return 0;
+}
+
+/**
+ * NCR5380_write - pseudo DMA write
+ * @instance: adapter to read from
+ * @dst: buffer to read into
+ * @len: buffer length
+ *
+ * Perform a psuedo DMA mode read from an NCR53C400 or equivalent
+ * controller
+ */
+
+static inline int NCR5380_pwrite(struct Scsi_Host *instance, unsigned char *src, int len)
+{
+ int blocks = len / 128;
+ int start = 0;
+ int bl;
+ int i;
+
+ NCR5380_local_declare();
+ NCR5380_setup(instance);
+
+ NCR5380_write(C400_CONTROL_STATUS_REG, CSR_BASE);
+ NCR5380_write(C400_BLOCK_COUNTER_REG, blocks);
+ while (1) {
+ if (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ) {
+ printk(KERN_ERR "53C400w: Got 53C80_IRQ start=%d, blocks=%d\n", start, blocks);
+ return -1;
+ }
+
+ if ((bl = NCR5380_read(C400_BLOCK_COUNTER_REG)) == 0) {
+ break;
+ }
+ while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY)
+ ; // FIXME - timeout
+#ifndef CONFIG_SCSI_G_NCR5380_MEM
+ {
+ for (i = 0; i < 128; i++)
+ NCR5380_write(C400_HOST_BUFFER, src[start + i]);
+ }
+#else
+ /* implies CONFIG_SCSI_G_NCR5380_MEM */
+ isa_memcpy_toio(NCR53C400_host_buffer + NCR5380_map_name, src + start, 128);
+#endif
+ start += 128;
+ blocks--;
+ }
+ if (blocks) {
+ while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY)
+ ; // FIXME - no timeout
+
+#ifndef CONFIG_SCSI_G_NCR5380_MEM
+ {
+ for (i = 0; i < 128; i++)
+ NCR5380_write(C400_HOST_BUFFER, src[start + i]);
+ }
+#else
+ /* implies CONFIG_SCSI_G_NCR5380_MEM */
+ isa_memcpy_toio(NCR53C400_host_buffer + NCR5380_map_name, src + start, 128);
+#endif
+ start += 128;
+ blocks--;
+ }
+
+#if 0
+ printk("53C400w: waiting for registers to be available\n");
+ THEY NEVER DO ! while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_53C80_REG);
+ printk("53C400w: Got em\n");
+#endif
+
+ /* Let's wait for this instead - could be ugly */
+ /* All documentation says to check for this. Maybe my hardware is too
+ * fast. Waiting for it seems to work fine! KLL
+ */
+ while (!(i = NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ))
+ ; // FIXME - no timeout
+
+ /*
+ * I know. i is certainly != 0 here but the loop is new. See previous
+ * comment.
+ */
+ if (i) {
+ if (!((i = NCR5380_read(BUS_AND_STATUS_REG)) & BASR_END_DMA_TRANSFER))
+ printk(KERN_ERR "53C400w: No END OF DMA bit - WHOOPS! BASR=%0x\n", i);
+ } else
+ printk(KERN_ERR "53C400w: no 53C80 gated irq after transfer (last block)\n");
+
+#if 0
+ if (!(NCR5380_read(BUS_AND_STATUS_REG) & BASR_END_DMA_TRANSFER)) {
+ printk(KERN_ERR "53C400w: no end dma signal\n");
+ }
+#endif
+ while (!(NCR5380_read(TARGET_COMMAND_REG) & TCR_LAST_BYTE_SENT))
+ ; // TIMEOUT
+ return 0;
+}
+#endif /* PSEUDO_DMA */
+
+/*
+ * Include the NCR5380 core code that we build our driver around
+ */
+
+#include "NCR5380.c"
+
+#define PRINTP(x) len += sprintf(buffer+len, x)
+#define ANDP ,
+
+static int sprint_opcode(char *buffer, int len, int opcode)
+{
+ int start = len;
+ PRINTP("0x%02x " ANDP opcode);
+ return len - start;
+}
+
+static int sprint_command(char *buffer, int len, unsigned char *command)
+{
+ int i, s, start = len;
+ len += sprint_opcode(buffer, len, command[0]);
+ for (i = 1, s = COMMAND_SIZE(command[0]); i < s; ++i)
+ PRINTP("%02x " ANDP command[i]);
+ PRINTP("\n");
+ return len - start;
+}
+
+/**
+ * sprintf_Scsi_Cmnd - print a scsi command
+ * @buffer: buffr to print into
+ * @len: buffer length
+ * @cmd: SCSI command block
+ *
+ * Print out the target and command data in hex
+ */
+
+static int sprint_Scsi_Cmnd(char *buffer, int len, Scsi_Cmnd * cmd)
+{
+ int start = len;
+ PRINTP("host number %d destination target %d, lun %d\n" ANDP cmd->device->host->host_no ANDP cmd->device->id ANDP cmd->device->lun);
+ PRINTP(" command = ");
+ len += sprint_command(buffer, len, cmd->cmnd);
+ return len - start;
+}
+
+/**
+ * generic_NCR5380_proc_info - /proc for NCR5380 driver
+ * @buffer: buffer to print into
+ * @start: start position
+ * @offset: offset into buffer
+ * @len: length
+ * @hostno: instance to affect
+ * @inout: read/write
+ *
+ * Provide the procfs information for the 5380 controller. We fill
+ * this with useful debugging information including the commands
+ * being executed, disconnected command queue and the statistical
+ * data
+ *
+ * Locks: global cli/lock for queue walk
+ */
+
+static int generic_NCR5380_proc_info(struct Scsi_Host *scsi_ptr, char *buffer, char **start, off_t offset, int length, int inout)
+{
+ int len = 0;
+ NCR5380_local_declare();
+ unsigned long flags;
+ unsigned char status;
+ int i;
+ Scsi_Cmnd *ptr;
+ struct NCR5380_hostdata *hostdata;
+#ifdef NCR5380_STATS
+ Scsi_Device *dev;
+ extern const char *const scsi_device_types[MAX_SCSI_DEVICE_CODE];
+#endif
+
+ NCR5380_setup(scsi_ptr);
+ hostdata = (struct NCR5380_hostdata *) scsi_ptr->hostdata;
+
+ spin_lock_irqsave(scsi_ptr->host_lock, flags);
+ PRINTP("SCSI host number %d : %s\n" ANDP scsi_ptr->host_no ANDP scsi_ptr->hostt->name);
+ PRINTP("Generic NCR5380 driver version %d\n" ANDP GENERIC_NCR5380_PUBLIC_RELEASE);
+ PRINTP("NCR5380 core version %d\n" ANDP NCR5380_PUBLIC_RELEASE);
+#ifdef NCR53C400
+ PRINTP("NCR53C400 extension version %d\n" ANDP NCR53C400_PUBLIC_RELEASE);
+ PRINTP("NCR53C400 card%s detected\n" ANDP(((struct NCR5380_hostdata *) scsi_ptr->hostdata)->flags & FLAG_NCR53C400) ? "" : " not");
+# if NCR53C400_PSEUDO_DMA
+ PRINTP("NCR53C400 pseudo DMA used\n");
+# endif
+#else
+ PRINTP("NO NCR53C400 driver extensions\n");
+#endif
+ PRINTP("Using %s mapping at %s 0x%lx, " ANDP STRVAL(NCR5380_map_config) ANDP STRVAL(NCR5380_map_name) ANDP scsi_ptr->NCR5380_instance_name);
+ if (scsi_ptr->irq == SCSI_IRQ_NONE)
+ PRINTP("no interrupt\n");
+ else
+ PRINTP("on interrupt %d\n" ANDP scsi_ptr->irq);
+
+#ifdef NCR5380_STATS
+ if (hostdata->connected || hostdata->issue_queue || hostdata->disconnected_queue)
+ PRINTP("There are commands pending, transfer rates may be crud\n");
+ if (hostdata->pendingr)
+ PRINTP(" %d pending reads" ANDP hostdata->pendingr);
+ if (hostdata->pendingw)
+ PRINTP(" %d pending writes" ANDP hostdata->pendingw);
+ if (hostdata->pendingr || hostdata->pendingw)
+ PRINTP("\n");
+ shost_for_each_device(dev, scsi_ptr) {
+ unsigned long br = hostdata->bytes_read[dev->id];
+ unsigned long bw = hostdata->bytes_write[dev->id];
+ long tr = hostdata->time_read[dev->id] / HZ;
+ long tw = hostdata->time_write[dev->id] / HZ;
+
+ PRINTP(" T:%d %s " ANDP dev->id ANDP(dev->type < MAX_SCSI_DEVICE_CODE) ? scsi_device_types[(int) dev->type] : "Unknown");
+ for (i = 0; i < 8; i++)
+ if (dev->vendor[i] >= 0x20)
+ *(buffer + (len++)) = dev->vendor[i];
+ *(buffer + (len++)) = ' ';
+ for (i = 0; i < 16; i++)
+ if (dev->model[i] >= 0x20)
+ *(buffer + (len++)) = dev->model[i];
+ *(buffer + (len++)) = ' ';
+ for (i = 0; i < 4; i++)
+ if (dev->rev[i] >= 0x20)
+ *(buffer + (len++)) = dev->rev[i];
+ *(buffer + (len++)) = ' ';
+
+ PRINTP("\n%10ld kb read in %5ld secs" ANDP br / 1024 ANDP tr);
+ if (tr)
+ PRINTP(" @ %5ld bps" ANDP br / tr);
+
+ PRINTP("\n%10ld kb written in %5ld secs" ANDP bw / 1024 ANDP tw);
+ if (tw)
+ PRINTP(" @ %5ld bps" ANDP bw / tw);
+ PRINTP("\n");
+ }
+#endif
+
+ status = NCR5380_read(STATUS_REG);
+ if (!(status & SR_REQ))
+ PRINTP("REQ not asserted, phase unknown.\n");
+ else {
+ for (i = 0; (phases[i].value != PHASE_UNKNOWN) && (phases[i].value != (status & PHASE_MASK)); ++i);
+ PRINTP("Phase %s\n" ANDP phases[i].name);
+ }
+
+ if (!hostdata->connected) {
+ PRINTP("No currently connected command\n");
+ } else {
+ len += sprint_Scsi_Cmnd(buffer, len, (Scsi_Cmnd *) hostdata->connected);
+ }
+
+ PRINTP("issue_queue\n");
+
+ for (ptr = (Scsi_Cmnd *) hostdata->issue_queue; ptr; ptr = (Scsi_Cmnd *) ptr->host_scribble)
+ len += sprint_Scsi_Cmnd(buffer, len, ptr);
+
+ PRINTP("disconnected_queue\n");
+
+ for (ptr = (Scsi_Cmnd *) hostdata->disconnected_queue; ptr; ptr = (Scsi_Cmnd *) ptr->host_scribble)
+ len += sprint_Scsi_Cmnd(buffer, len, ptr);
+
+ *start = buffer + offset;
+ len -= offset;
+ if (len > length)
+ len = length;
+ spin_unlock_irqrestore(scsi_ptr->host_lock, flags);
+ return len;
+}
+
+#undef PRINTP
+#undef ANDP
+
+static Scsi_Host_Template driver_template = {
+ .proc_info = generic_NCR5380_proc_info,
+ .name = "Generic NCR5380/NCR53C400 Scsi Driver",
+ .detect = generic_NCR5380_detect,
+ .release = generic_NCR5380_release_resources,
+ .info = generic_NCR5380_info,
+ .queuecommand = generic_NCR5380_queue_command,
+ .eh_abort_handler = generic_NCR5380_abort,
+ .eh_bus_reset_handler = generic_NCR5380_bus_reset,
+ .eh_device_reset_handler = generic_NCR5380_device_reset,
+ .eh_host_reset_handler = generic_NCR5380_host_reset,
+ .bios_param = NCR5380_BIOSPARAM,
+ .can_queue = CAN_QUEUE,
+ .this_id = 7,
+ .sg_tablesize = SG_ALL,
+ .cmd_per_lun = CMD_PER_LUN,
+ .use_clustering = DISABLE_CLUSTERING,
+};
+#include <linux/module.h>
+#include "scsi_module.c"
+
+module_param(ncr_irq, int, 0);
+module_param(ncr_dma, int, 0);
+module_param(ncr_addr, int, 0);
+module_param(ncr_5380, int, 0);
+module_param(ncr_53c400, int, 0);
+module_param(ncr_53c400a, int, 0);
+module_param(dtc_3181e, int, 0);
+MODULE_LICENSE("GPL");
+
+
+static struct isapnp_device_id id_table[] __devinitdata = {
+ {
+ ISAPNP_ANY_ID, ISAPNP_ANY_ID,
+ ISAPNP_VENDOR('D', 'T', 'C'), ISAPNP_FUNCTION(0x436e),
+ 0},
+ {0}
+};
+
+MODULE_DEVICE_TABLE(isapnp, id_table);
+
+
+__setup("ncr5380=", do_NCR5380_setup);
+__setup("ncr53c400=", do_NCR53C400_setup);
+__setup("ncr53c400a=", do_NCR53C400A_setup);
+__setup("dtc3181e=", do_DTC3181E_setup);