drivers/scsi/arm/cumana_1.c - maze/linux - Git at Google

 /*
  * 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 <asm/system.h>

 #include "../scsi.h"
 #include <scsi/scsi_host.h>

 #include <scsi/scsicam.h>

 #define AUTOSENSE
 #define PSEUDO_DMA

 #define CUMANASCSI_PUBLIC_RELEASE 1

 #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_proc_info		cumanascsi_proc_info

 #define NCR5380_implementation_fields	\
 	unsigned ctrl;			\
 	void __iomem *base;		\
 	void __iomem *dma

 #define BOARD_NORMAL	0
 #define BOARD_NCR53C400	1

 #include "../NCR5380.h"

 void cumanascsi_setup(char *str, int *ints)
 {
 }

 const char *cumanascsi_info(struct Scsi_Host *spnt)
 {
 	return "";
 }

 #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 __devinit
 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, IRQF_DISABLED,
 			  "CumanaSCSI-1", host);
 	if (ret) {
 		printk("scsi%d: IRQ%d not free: %d\n",
 		    host->host_no, host->irq, ret);
 		goto out_unmap;
 	}

 	printk("scsi%d: at port 0x%08lx irq %d",
 		host->host_no, host->io_port, host->irq);
 	printk(" options CAN_QUEUE=%d CMD_PER_LUN=%d release=%d",
 		host->can_queue, host->cmd_per_lun, CUMANASCSI_PUBLIC_RELEASE);
 	printk("\nscsi%d:", host->host_no);
 	NCR5380_print_options(host);
 	printk("\n");

 	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 __devexit 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		= __devexit_p(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");
	/*
	* 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 <asm/system.h>

	#include "../scsi.h"
	#include <scsi/scsi_host.h>

	#include <scsi/scsicam.h>

	#define AUTOSENSE
	#define PSEUDO_DMA

	#define CUMANASCSI_PUBLIC_RELEASE 1

	#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_proc_info cumanascsi_proc_info

	#define NCR5380_implementation_fields \
	unsigned ctrl; \
	void __iomem *base; \
	void __iomem *dma

	#define BOARD_NORMAL 0
	#define BOARD_NCR53C400 1

	#include "../NCR5380.h"

	void cumanascsi_setup(char str, int ints)
	{
	}

	const char cumanascsi_info(struct Scsi_Host spnt)
	{
	return "";
	}

	#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 __devinit
	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, IRQF_DISABLED,
	"CumanaSCSI-1", host);
	if (ret) {
	printk("scsi%d: IRQ%d not free: %d\n",
	host->host_no, host->irq, ret);
	goto out_unmap;
	}

	printk("scsi%d: at port 0x%08lx irq %d",
	host->host_no, host->io_port, host->irq);
	printk(" options CAN_QUEUE=%d CMD_PER_LUN=%d release=%d",
	host->can_queue, host->cmd_per_lun, CUMANASCSI_PUBLIC_RELEASE);
	printk("\nscsi%d:", host->host_no);
	NCR5380_print_options(host);
	printk("\n");

	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 __devexit 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 = __devexit_p(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");