patch-2.1.88 linux/drivers/acorn/scsi/cumana_1.c

• Lines: 362
• Date: Fri Feb 6 16:22:47 1998
• Orig file: v2.1.87/linux/drivers/acorn/scsi/cumana_1.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.1.87/linux/drivers/acorn/scsi/cumana_1.c linux/drivers/acorn/scsi/cumana_1.c
@@ -0,0 +1,361 @@
+#define AUTOSENSE
+#define PSEUDO_DMA
+
+/*
+ * Generic 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
+ */
+
+
+/*
+ * 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.
+ */
+
+/*
+ * $Log: cumana_NCR5380.c,v $
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/signal.h>
+#include <linux/sched.h>
+#include <linux/ioport.h>
+#include <linux/init.h>
+#include <linux/blk.h>
+
+#include <asm/ecard.h>
+#include <asm/io.h>
+#include <asm/system.h>
+
+#include "../../scsi/scsi.h"
+#include "../../scsi/hosts.h"
+#include "cumana_1.h"
+#include "../../scsi/NCR5380.h"
+#include "../../scsi/constants.h"
+
+static const card_ids cumanascsi_cids[] = {
+	{ MANU_CUMANA, PROD_CUMANA_SCSI_1 },
+	{ 0xffff, 0xffff }
+};
+
+static struct proc_dir_entry proc_scsi_cumana1 = {
+	PROC_SCSI_T128, 12, "CumanaSCSI-1", S_IFDIR | S_IRUGO, S_IXUGO, 2
+};
+
+/*
+ * Function : cumanascsi_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 cumanascsi_setup(char *str, int *ints) {
+}
+
+#define CUMANA_ADDRESS(card) (ecard_address((card), ECARD_IOC, ECARD_SLOW) + 0x800)
+#define CUMANA_IRQ(card)     ((card)->irq)
+/*
+ * Function : int cumanascsi_detect(Scsi_Host_Template * tpnt)
+ *
+ * Purpose : initializes cumana NCR5380 driver based on the
+ *	command line / compile time port and irq definitions.
+ *
+ * Inputs : tpnt - template for this SCSI adapter.
+ *
+ * Returns : 1 if a host adapter was found, 0 if not.
+ *
+ */
+static struct expansion_card *ecs[4];
+ 
+int cumanascsi_detect(Scsi_Host_Template * tpnt)
+{
+    int count = 0;
+    struct Scsi_Host *instance;
+
+    tpnt->proc_dir = &proc_scsi_cumana1;
+
+    memset (ecs, 0, sizeof (ecs));
+
+    while(1) {
+    	if((ecs[count] = ecard_find(0, cumanascsi_cids)) == NULL)
+    		break;
+
+        instance = scsi_register (tpnt, sizeof(struct NCR5380_hostdata));
+        instance->io_port = CUMANA_ADDRESS(ecs[count]);
+	instance->irq = CUMANA_IRQ(ecs[count]);
+
+	NCR5380_init(instance, 0);
+	ecard_claim(ecs[count]);
+
+	instance->n_io_port = 255;
+	request_region (instance->io_port, instance->n_io_port, "CumanaSCSI-1");
+
+        ((struct NCR5380_hostdata *)instance->hostdata)->ctrl = 0;
+        outb(0x00, instance->io_port - 577);
+
+	if (instance->irq != IRQ_NONE)
+	    if (request_irq(instance->irq, cumanascsi_intr, SA_INTERRUPT, "CumanaSCSI-1", NULL)) {
+		printk("scsi%d: IRQ%d not free, interrupts disabled\n",
+		    instance->host_no, instance->irq);
+		instance->irq = IRQ_NONE;
+	    }
+
+	if (instance->irq == IRQ_NONE) {
+	    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);
+	}
+
+	printk("scsi%d: at port %X irq", instance->host_no, instance->io_port);
+	if (instance->irq == IRQ_NONE)
+	    printk ("s disabled");
+	else
+	    printk (" %d", instance->irq);
+	printk(" options CAN_QUEUE=%d CMD_PER_LUN=%d release=%d",
+	    CAN_QUEUE, CMD_PER_LUN, CUMANASCSI_PUBLIC_RELEASE);
+	printk("\nscsi%d:", instance->host_no);
+	NCR5380_print_options(instance);
+	printk("\n");
+
+	++count;
+    }
+    return count;
+}
+
+int cumanascsi_release (struct Scsi_Host *shpnt)
+{
+	int i;
+
+	if (shpnt->irq != IRQ_NONE)
+		free_irq (shpnt->irq, NULL);
+	if (shpnt->io_port)
+		release_region (shpnt->io_port, shpnt->n_io_port);
+
+	for (i = 0; i < 4; i++)
+		if (shpnt->io_port == CUMANA_ADDRESS(ecs[i]))
+			ecard_release (ecs[i]);
+	return 0;
+}
+
+const char * cumanascsi_info (struct Scsi_Host *spnt) {
+    return "";
+}
+
+#ifdef NOT_EFFICIENT
+#define CTRL(p,v)     outb(*ctrl = (v), (p) - 577)
+#define STAT(p)       inb((p)+1)
+#define IN(p)         inb((p))
+#define OUT(v,p)      outb((v), (p))
+#else
+#define CTRL(p,v)	(p[-2308] = (*ctrl = (v)))
+#define STAT(p)		(p[4])
+#define IN(p)		(*(p))
+#define IN2(p)		((unsigned short)(*(volatile unsigned long *)(p)))
+#define OUT(v,p)	(*(p) = (v))
+#define OUT2(v,p)	(*((volatile unsigned long *)(p)) = (v))
+#endif
+#define L(v)		(((v)<<16)|((v) & 0x0000ffff))
+#define H(v)		(((v)>>16)|((v) & 0xffff0000))
+
+static inline int NCR5380_pwrite(struct Scsi_Host *instance, unsigned char *addr,
+              int len)
+{
+  int *ctrl = &((struct NCR5380_hostdata *)instance->hostdata)->ctrl;
+  int oldctrl = *ctrl;
+  unsigned long *laddr;
+#ifdef NOT_EFFICIENT
+  int iobase = instance->io_port;
+  int dma_io = iobase & ~(0x3C0000>>2);
+#else
+  volatile unsigned char *iobase = (unsigned char *)ioaddr(instance->io_port);
+  volatile unsigned char *dma_io = (unsigned char *)((int)iobase & ~0x3C0000);
+#endif
+
+  if(!len) return 0;
+
+  CTRL(iobase, 0x02);
+  laddr = (unsigned long *)addr;
+  while(len >= 32)
+  {
+    int status;
+    unsigned long v;
+    status = STAT(iobase);
+    if(status & 0x80)
+      goto end;
+    if(!(status & 0x40))
+      continue;
+    v=*laddr++; OUT2(L(v),dma_io); OUT2(H(v),dma_io);
+    v=*laddr++; OUT2(L(v),dma_io); OUT2(H(v),dma_io);
+    v=*laddr++; OUT2(L(v),dma_io); OUT2(H(v),dma_io);
+    v=*laddr++; OUT2(L(v),dma_io); OUT2(H(v),dma_io);
+    v=*laddr++; OUT2(L(v),dma_io); OUT2(H(v),dma_io);
+    v=*laddr++; OUT2(L(v),dma_io); OUT2(H(v),dma_io);
+    v=*laddr++; OUT2(L(v),dma_io); OUT2(H(v),dma_io);
+    v=*laddr++; OUT2(L(v),dma_io); OUT2(H(v),dma_io);
+    len -= 32;
+    if(len == 0)
+      break;
+  }
+
+  addr = (unsigned char *)laddr;
+  CTRL(iobase, 0x12);
+  while(len > 0)
+  {
+    int status;
+    status = STAT(iobase);
+    if(status & 0x80)
+      goto end;
+    if(status & 0x40)
+    {
+      OUT(*addr++, dma_io);
+      if(--len == 0)
+        break;
+    }
+
+    status = STAT(iobase);
+    if(status & 0x80)
+      goto end;
+    if(status & 0x40)
+    {
+      OUT(*addr++, dma_io);
+      if(--len == 0)
+        break;
+    }
+  }
+end:
+  CTRL(iobase, oldctrl|0x40);
+  return len;
+}
+
+static inline int NCR5380_pread(struct Scsi_Host *instance, unsigned char *addr,
+              int len)
+{
+  int *ctrl = &((struct NCR5380_hostdata *)instance->hostdata)->ctrl;
+  int oldctrl = *ctrl;
+  unsigned long *laddr;
+#ifdef NOT_EFFICIENT
+  int iobase = instance->io_port;
+  int dma_io = iobase & ~(0x3C0000>>2);
+#else
+  volatile unsigned char *iobase = (unsigned char *)ioaddr(instance->io_port);
+  volatile unsigned char *dma_io = (unsigned char *)((int)iobase & ~0x3C0000);
+#endif
+
+  if(!len) return 0;
+
+  CTRL(iobase, 0x00);
+  laddr = (unsigned long *)addr;
+  while(len >= 32)
+  {
+    int status;
+    status = STAT(iobase);
+    if(status & 0x80)
+      goto end;
+    if(!(status & 0x40))
+      continue;
+    *laddr++ = IN2(dma_io)|(IN2(dma_io)<<16);
+    *laddr++ = IN2(dma_io)|(IN2(dma_io)<<16);
+    *laddr++ = IN2(dma_io)|(IN2(dma_io)<<16);
+    *laddr++ = IN2(dma_io)|(IN2(dma_io)<<16);
+    *laddr++ = IN2(dma_io)|(IN2(dma_io)<<16);
+    *laddr++ = IN2(dma_io)|(IN2(dma_io)<<16);
+    *laddr++ = IN2(dma_io)|(IN2(dma_io)<<16);
+    *laddr++ = IN2(dma_io)|(IN2(dma_io)<<16);
+    len -= 32;
+    if(len == 0)
+      break;
+  }
+
+  addr = (unsigned char *)laddr;
+  CTRL(iobase, 0x10);
+  while(len > 0)
+  {
+    int status;
+    status = STAT(iobase);
+    if(status & 0x80)
+      goto end;
+    if(status & 0x40)
+    {
+      *addr++ = IN(dma_io);
+      if(--len == 0)
+        break;
+    }
+
+    status = STAT(iobase);
+    if(status & 0x80)
+      goto end;
+    if(status & 0x40)
+    {
+      *addr++ = IN(dma_io);
+      if(--len == 0)
+        break;
+    }
+  }
+end:
+  CTRL(iobase, oldctrl|0x40);
+  return len;
+}
+
+#undef STAT
+#undef CTRL
+#undef IN
+#undef OUT
+
+#define CTRL(p,v) outb(*ctrl = (v), (p) - 577)
+
+static char cumanascsi_read(struct Scsi_Host *instance, int reg)
+{
+  int iobase = instance->io_port;
+  int i;
+  int *ctrl = &((struct NCR5380_hostdata *)instance->hostdata)->ctrl;
+
+  CTRL(iobase, 0);
+  i = inb(iobase + 64 + reg);
+  CTRL(iobase, 0x40);
+
+  return i;
+}
+
+static void cumanascsi_write(struct Scsi_Host *instance, int reg, int value)
+{
+  int iobase = instance->io_port;
+  int *ctrl = &((struct NCR5380_hostdata *)instance->hostdata)->ctrl;
+
+  CTRL(iobase, 0);
+  outb(value, iobase + 64 + reg);
+  CTRL(iobase, 0x40);
+}
+
+#undef CTRL
+
+#include "../../scsi/NCR5380.c"
+
+#ifdef MODULE
+
+Scsi_Host_Template driver_template = CUMANA_NCR5380;
+
+#include "../../scsi/scsi_module.c"
+#endif