1 files changed, 239 insertions, 0 deletions

diff --git a/drivers/scsi/arm/ecoscsi.c b/drivers/scsi/arm/ecoscsi.c
new file mode 100644
index 000000000000..303648a84709
--- /dev/null
+++ b/drivers/scsi/arm/ecoscsi.c
@@ -0,0 +1,239 @@
+#define AUTOSENSE
+/* #define PSEUDO_DMA */
+
+/*
+ * EcoSCSI Generic NCR5380 driver
+ *
+ * Copyright 1995, Russell King
+ *
+ * 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
+ */
+
+#include <linux/module.h>
+#include <linux/signal.h>
+#include <linux/sched.h>
+#include <linux/ioport.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/blkdev.h>
+
+#include <asm/io.h>
+#include <asm/system.h>
+
+#include "../scsi.h"
+#include <scsi/scsi_host.h>
+
+#define NCR5380_implementation_fields   int port, ctrl
+#define NCR5380_local_declare()         struct Scsi_Host *_instance
+#define NCR5380_setup(instance)         _instance = instance
+
+#define NCR5380_read(reg)               ecoscsi_read(_instance, reg)
+#define NCR5380_write(reg, value)       ecoscsi_write(_instance, reg, value)
+
+#define NCR5380_intr                    ecoscsi_intr
+#define NCR5380_queue_command           ecoscsi_queue_command
+#define NCR5380_proc_info               ecoscsi_proc_info
+
+#include "../NCR5380.h"
+
+#define ECOSCSI_PUBLIC_RELEASE 1
+
+static char ecoscsi_read(struct Scsi_Host *instance, int reg)
+{
+  int iobase = instance->io_port;
+  outb(reg | 8, iobase);
+  return inb(iobase + 1);
+}
+
+static void ecoscsi_write(struct Scsi_Host *instance, int reg, int value)
+{
+  int iobase = instance->io_port;
+  outb(reg | 8, iobase);
+  outb(value, iobase + 1);
+}
+
+/*
+ * Function : ecoscsi_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.
+ *
+ */
+
+void ecoscsi_setup(char *str, int *ints)
+{
+}
+
+const char * ecoscsi_info (struct Scsi_Host *spnt)
+{
+        return "";
+}
+
+#if 0
+#define STAT(p) inw(p + 144)
+
+static inline int NCR5380_pwrite(struct Scsi_Host *host, unsigned char *addr,
+              int len)
+{
+  int iobase = host->io_port;
+printk("writing %p len %d\n",addr, len);
+  if(!len) return -1;
+
+  while(1)
+  {
+    int status;
+    while(((status = STAT(iobase)) & 0x100)==0);
+  }
+}
+
+static inline int NCR5380_pread(struct Scsi_Host *host, unsigned char *addr,
+              int len)
+{
+  int iobase = host->io_port;
+  int iobase2= host->io_port + 0x100;
+  unsigned char *start = addr;
+  int s;
+printk("reading %p len %d\n",addr, len);
+  outb(inb(iobase + 128), iobase + 135);
+  while(len > 0)
+  {
+    int status,b,i, timeout;
+    timeout = 0x07FFFFFF;
+    while(((status = STAT(iobase)) & 0x100)==0)
+    {
+      timeout--;
+      if(status & 0x200 || !timeout)
+      {
+        printk("status = %p\n",status);
+        outb(0, iobase + 135);
+        return 1;
+      }
+    }
+    if(len >= 128)
+    {
+      for(i=0; i<64; i++)
+      {
+        b = inw(iobase + 136);
+        *addr++ = b;
+        *addr++ = b>>8;
+      }
+      len -= 128;
+    }
+    else
+    {
+      b = inw(iobase + 136);
+      *addr ++ = b;
+      len -= 1;
+      if(len)
+        *addr ++ = b>>8;
+      len -= 1;
+    }
+  }
+  outb(0, iobase + 135);
+  printk("first bytes = %02X %02X %02X %20X %02X %02X %02X\n",*start, start[1], start[2], start[3], start[4], start[5], start[6]);
+  return 1;
+}
+#endif
+#undef STAT
+
+#define BOARD_NORMAL    0
+#define BOARD_NCR53C400 1
+
+#include "../NCR5380.c"
+
+static Scsi_Host_Template ecoscsi_template =  {
+        .module         = THIS_MODULE,
+        .name           = "Serial Port EcoSCSI NCR5380",
+        .proc_name      = "ecoscsi",
+        .info           = ecoscsi_info,
+        .queuecommand   = ecoscsi_queue_command,
+        .eh_abort_handler       = NCR5380_abort,
+        .eh_device_reset_handler= NCR5380_device_reset,
+        .eh_bus_reset_handler   = NCR5380_bus_reset,
+        .eh_host_reset_handler  = NCR5380_host_reset,
+        .can_queue      = 16,
+        .this_id        = 7,
+        .sg_tablesize   = SG_ALL,
+        .cmd_per_lun    = 2,
+        .use_clustering = DISABLE_CLUSTERING
+};
+
+static struct Scsi_Host *host;
+
+static int __init ecoscsi_init(void)
+{
+
+        host = scsi_host_alloc(tpnt, sizeof(struct NCR5380_hostdata));
+        if (!host)
+                return 0;
+
+        host->io_port = 0x80ce8000;
+        host->n_io_port = 144;
+        host->irq = IRQ_NONE;
+
+        if (!(request_region(host->io_port, host->n_io_port, "ecoscsi")) )
+                goto unregister_scsi;
+
+        ecoscsi_write(host, MODE_REG, 0x20);            /* Is it really SCSI? */
+        if (ecoscsi_read(host, MODE_REG) != 0x20) /* Write to a reg.    */
+                goto release_reg;
+
+        ecoscsi_write(host, MODE_REG, 0x00 );           /* it back.           */
+        if (ecoscsi_read(host, MODE_REG) != 0x00)
+                goto release_reg;
+
+        NCR5380_init(host, 0);
+
+        printk("scsi%d: at port 0x%08lx irqs disabled", host->host_no, host->io_port);
+        printk(" options CAN_QUEUE=%d CMD_PER_LUN=%d release=%d",
+                host->can_queue, host->cmd_per_lun, ECOSCSI_PUBLIC_RELEASE);
+        printk("\nscsi%d:", host->host_no);
+        NCR5380_print_options(host);
+        printk("\n");
+
+        scsi_add_host(host, NULL); /* XXX handle failure */
+        scsi_scan_host(host);
+        return 0;
+
+release_reg:
+        release_region(host->io_port, host->n_io_port);
+unregister_scsi:
+        scsi_host_put(host);
+        return -ENODEV;
+}
+
+static void __exit ecoscsi_exit(void)
+{
+        scsi_remove_host(host);
+
+        if (shpnt->irq != IRQ_NONE)
+                free_irq(shpnt->irq, NULL);
+        NCR5380_exit(host);
+        if (shpnt->io_port)
+                release_region(shpnt->io_port, shpnt->n_io_port);
+
+        scsi_host_put(host);
+        return 0;
+}
+
+module_init(ecoscsi_init);
+module_exit(ecoscsi_exit);
+
+MODULE_AUTHOR("Russell King");
+MODULE_DESCRIPTION("Econet-SCSI driver for Acorn machines");
+MODULE_LICENSE("GPL");
+