Initial import

1 files changed, 324 insertions, 0 deletions

diff --git a/drivers/scsi/arm/cumana_1.c b/drivers/scsi/arm/cumana_1.c
new file mode 100644
index 000000000..d28d6c0f1
--- /dev/null
+++ b/drivers/scsi/arm/cumana_1.c
@@ -0,0 +1,324 @@
+/*
+ * Generic Generic NCR5380 driver
+ *
+ * Copyright 1995-2002, Russell King
+ */
+#include <linux/module.h>
+#include <linux/signal.h>
+#include <linux/ioport.h>
+#include <linux/delay.h>
+#include <linux/blkdev.h>
+#include <linux/init.h>
+
+#include <asm/ecard.h>
+#include <asm/io.h>
+
+#include <scsi/scsi_host.h>
+
+#include <scsi/scsicam.h>
+
+#define PSEUDO_DMA
+
+#define priv(host)			((struct NCR5380_hostdata *)(host)->hostdata)
+#define NCR5380_local_declare()		struct Scsi_Host *_instance
+#define NCR5380_setup(instance)		_instance = instance
+#define NCR5380_read(reg)		cumanascsi_read(_instance, reg)
+#define NCR5380_write(reg, value)	cumanascsi_write(_instance, reg, value)
+#define NCR5380_intr			cumanascsi_intr
+#define NCR5380_queue_command		cumanascsi_queue_command
+#define NCR5380_info			cumanascsi_info
+
+#define NCR5380_implementation_fields	\
+	unsigned ctrl;			\
+	void __iomem *base;		\
+	void __iomem *dma
+
+#include "../NCR5380.h"
+
+void cumanascsi_setup(char *str, int *ints)
+{
+}
+
+#define CTRL	0x16fc
+#define STAT	0x2004
+#define L(v)	(((v)<<16)|((v) & 0x0000ffff))
+#define H(v)	(((v)>>16)|((v) & 0xffff0000))
+
+static inline int
+NCR5380_pwrite(struct Scsi_Host *host, unsigned char *addr, int len)
+{
+  unsigned long *laddr;
+  void __iomem *dma = priv(host)->dma + 0x2000;
+
+  if(!len) return 0;
+
+  writeb(0x02, priv(host)->base + CTRL);
+  laddr = (unsigned long *)addr;
+  while(len >= 32)
+  {
+    unsigned int status;
+    unsigned long v;
+    status = readb(priv(host)->base + STAT);
+    if(status & 0x80)
+      goto end;
+    if(!(status & 0x40))
+      continue;
+    v=*laddr++; writew(L(v), dma); writew(H(v), dma);
+    v=*laddr++; writew(L(v), dma); writew(H(v), dma);
+    v=*laddr++; writew(L(v), dma); writew(H(v), dma);
+    v=*laddr++; writew(L(v), dma); writew(H(v), dma);
+    v=*laddr++; writew(L(v), dma); writew(H(v), dma);
+    v=*laddr++; writew(L(v), dma); writew(H(v), dma);
+    v=*laddr++; writew(L(v), dma); writew(H(v), dma);
+    v=*laddr++; writew(L(v), dma); writew(H(v), dma);
+    len -= 32;
+    if(len == 0)
+      break;
+  }
+
+  addr = (unsigned char *)laddr;
+  writeb(0x12, priv(host)->base + CTRL);
+
+  while(len > 0)
+  {
+    unsigned int status;
+    status = readb(priv(host)->base + STAT);
+    if(status & 0x80)
+      goto end;
+    if(status & 0x40)
+    {
+      writeb(*addr++, dma);
+      if(--len == 0)
+        break;
+    }
+
+    status = readb(priv(host)->base + STAT);
+    if(status & 0x80)
+      goto end;
+    if(status & 0x40)
+    {
+      writeb(*addr++, dma);
+      if(--len == 0)
+        break;
+    }
+  }
+end:
+  writeb(priv(host)->ctrl | 0x40, priv(host)->base + CTRL);
+  return len;
+}
+
+static inline int
+NCR5380_pread(struct Scsi_Host *host, unsigned char *addr, int len)
+{
+  unsigned long *laddr;
+  void __iomem *dma = priv(host)->dma + 0x2000;
+
+  if(!len) return 0;
+
+  writeb(0x00, priv(host)->base + CTRL);
+  laddr = (unsigned long *)addr;
+  while(len >= 32)
+  {
+    unsigned int status;
+    status = readb(priv(host)->base + STAT);
+    if(status & 0x80)
+      goto end;
+    if(!(status & 0x40))
+      continue;
+    *laddr++ = readw(dma) | (readw(dma) << 16);
+    *laddr++ = readw(dma) | (readw(dma) << 16);
+    *laddr++ = readw(dma) | (readw(dma) << 16);
+    *laddr++ = readw(dma) | (readw(dma) << 16);
+    *laddr++ = readw(dma) | (readw(dma) << 16);
+    *laddr++ = readw(dma) | (readw(dma) << 16);
+    *laddr++ = readw(dma) | (readw(dma) << 16);
+    *laddr++ = readw(dma) | (readw(dma) << 16);
+    len -= 32;
+    if(len == 0)
+      break;
+  }
+
+  addr = (unsigned char *)laddr;
+  writeb(0x10, priv(host)->base + CTRL);
+
+  while(len > 0)
+  {
+    unsigned int status;
+    status = readb(priv(host)->base + STAT);
+    if(status & 0x80)
+      goto end;
+    if(status & 0x40)
+    {
+      *addr++ = readb(dma);
+      if(--len == 0)
+        break;
+    }
+
+    status = readb(priv(host)->base + STAT);
+    if(status & 0x80)
+      goto end;
+    if(status & 0x40)
+    {
+      *addr++ = readb(dma);
+      if(--len == 0)
+        break;
+    }
+  }
+end:
+  writeb(priv(host)->ctrl | 0x40, priv(host)->base + CTRL);
+  return len;
+}
+
+static unsigned char cumanascsi_read(struct Scsi_Host *host, unsigned int reg)
+{
+	void __iomem *base = priv(host)->base;
+	unsigned char val;
+
+	writeb(0, base + CTRL);
+
+	val = readb(base + 0x2100 + (reg << 2));
+
+	priv(host)->ctrl = 0x40;
+	writeb(0x40, base + CTRL);
+
+	return val;
+}
+
+static void cumanascsi_write(struct Scsi_Host *host, unsigned int reg, unsigned int value)
+{
+	void __iomem *base = priv(host)->base;
+
+	writeb(0, base + CTRL);
+
+	writeb(value, base + 0x2100 + (reg << 2));
+
+	priv(host)->ctrl = 0x40;
+	writeb(0x40, base + CTRL);
+}
+
+#include "../NCR5380.c"
+
+static struct scsi_host_template cumanascsi_template = {
+	.module			= THIS_MODULE,
+	.name			= "Cumana 16-bit SCSI",
+	.info			= cumanascsi_info,
+	.queuecommand		= cumanascsi_queue_command,
+	.eh_abort_handler	= NCR5380_abort,
+	.eh_bus_reset_handler	= NCR5380_bus_reset,
+	.can_queue		= 16,
+	.this_id		= 7,
+	.sg_tablesize		= SG_ALL,
+	.cmd_per_lun		= 2,
+	.use_clustering		= DISABLE_CLUSTERING,
+	.proc_name		= "CumanaSCSI-1",
+};
+
+static int cumanascsi1_probe(struct expansion_card *ec,
+			     const struct ecard_id *id)
+{
+	struct Scsi_Host *host;
+	int ret;
+
+	ret = ecard_request_resources(ec);
+	if (ret)
+		goto out;
+
+	host = scsi_host_alloc(&cumanascsi_template, sizeof(struct NCR5380_hostdata));
+	if (!host) {
+		ret = -ENOMEM;
+		goto out_release;
+	}
+
+	priv(host)->base = ioremap(ecard_resource_start(ec, ECARD_RES_IOCSLOW),
+				   ecard_resource_len(ec, ECARD_RES_IOCSLOW));
+	priv(host)->dma = ioremap(ecard_resource_start(ec, ECARD_RES_MEMC),
+				  ecard_resource_len(ec, ECARD_RES_MEMC));
+	if (!priv(host)->base || !priv(host)->dma) {
+		ret = -ENOMEM;
+		goto out_unmap;
+	}
+
+	host->irq = ec->irq;
+
+	NCR5380_init(host, 0);
+
+        priv(host)->ctrl = 0;
+        writeb(0, priv(host)->base + CTRL);
+
+	host->n_io_port = 255;
+	if (!(request_region(host->io_port, host->n_io_port, "CumanaSCSI-1"))) {
+		ret = -EBUSY;
+		goto out_unmap;
+	}
+
+	ret = request_irq(host->irq, cumanascsi_intr, 0,
+			  "CumanaSCSI-1", host);
+	if (ret) {
+		printk("scsi%d: IRQ%d not free: %d\n",
+		    host->host_no, host->irq, ret);
+		goto out_unmap;
+	}
+
+	ret = scsi_add_host(host, &ec->dev);
+	if (ret)
+		goto out_free_irq;
+
+	scsi_scan_host(host);
+	goto out;
+
+ out_free_irq:
+	free_irq(host->irq, host);
+ out_unmap:
+	iounmap(priv(host)->base);
+	iounmap(priv(host)->dma);
+	scsi_host_put(host);
+ out_release:
+	ecard_release_resources(ec);
+ out:
+	return ret;
+}
+
+static void cumanascsi1_remove(struct expansion_card *ec)
+{
+	struct Scsi_Host *host = ecard_get_drvdata(ec);
+
+	ecard_set_drvdata(ec, NULL);
+
+	scsi_remove_host(host);
+	free_irq(host->irq, host);
+	NCR5380_exit(host);
+	iounmap(priv(host)->base);
+	iounmap(priv(host)->dma);
+	scsi_host_put(host);
+	ecard_release_resources(ec);
+}
+
+static const struct ecard_id cumanascsi1_cids[] = {
+	{ MANU_CUMANA, PROD_CUMANA_SCSI_1 },
+	{ 0xffff, 0xffff }
+};
+
+static struct ecard_driver cumanascsi1_driver = {
+	.probe		= cumanascsi1_probe,
+	.remove		= cumanascsi1_remove,
+	.id_table	= cumanascsi1_cids,
+	.drv = {
+		.name		= "cumanascsi1",
+	},
+};
+
+static int __init cumanascsi_init(void)
+{
+	return ecard_register_driver(&cumanascsi1_driver);
+}
+
+static void __exit cumanascsi_exit(void)
+{
+	ecard_remove_driver(&cumanascsi1_driver);
+}
+
+module_init(cumanascsi_init);
+module_exit(cumanascsi_exit);
+
+MODULE_DESCRIPTION("Cumana SCSI-1 driver for Acorn machines");
+MODULE_LICENSE("GPL");