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Release 4.11 drivers/scsi/arm/cumana_1.c

Directory: drivers/scsi/arm
/*
 * Generic Generic NCR5380 driver
 *
 * Copyright 1995-2002, Russell King
 */
#include <linux/module.h>
#include <linux/ioport.h>
#include <linux/blkdev.h>
#include <linux/init.h>

#include <asm/ecard.h>
#include <asm/io.h>

#include <scsi/scsi_host.h>


#define priv(host)			((struct NCR5380_hostdata *)(host)->hostdata)

#define NCR5380_read(reg)		cumanascsi_read(hostdata, reg)

#define NCR5380_write(reg, value)	cumanascsi_write(hostdata, reg, value)


#define NCR5380_dma_xfer_len		cumanascsi_dma_xfer_len

#define NCR5380_dma_recv_setup		cumanascsi_pread

#define NCR5380_dma_send_setup		cumanascsi_pwrite

#define NCR5380_dma_residual		NCR5380_dma_residual_none


#define NCR5380_intr			cumanascsi_intr

#define NCR5380_queue_command		cumanascsi_queue_command

#define NCR5380_info			cumanascsi_info


#define NCR5380_implementation_fields	\
	unsigned ctrl

struct NCR5380_hostdata;
static u8 cumanascsi_read(struct NCR5380_hostdata *, unsigned int);
static void cumanascsi_write(struct NCR5380_hostdata *, unsigned int, u8);

#include "../NCR5380.h"


#define CTRL	0x16fc

#define STAT	0x2004

#define L(v)	(((v)<<16)|((v) & 0x0000ffff))

#define H(v)	(((v)>>16)|((v) & 0xffff0000))




static inline int cumanascsi_pwrite(struct NCR5380_hostdata *hostdata,
                                    unsigned char *addr, int len)
{
  unsigned long *laddr;
  u8 __iomem *base = hostdata->io;
  u8 __iomem *dma = hostdata->pdma_io + 0x2000;

  if(!len) return 0;

  writeb(0x02, base + CTRL);
  laddr = (unsigned long *)addr;
  while(len >= 32)
  {
    unsigned int status;
    unsigned long v;
    status = readb(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, base + CTRL);

  while(len > 0)
  {
    unsigned int status;
    status = readb(base + STAT);
    if(status & 0x80)
      goto end;
    if(status & 0x40)
    {
      writeb(*addr++, dma);
      if(--len == 0)
        break;
    }

    status = readb(base + STAT);
    if(status & 0x80)
      goto end;
    if(status & 0x40)
    {
      writeb(*addr++, dma);
      if(--len == 0)
        break;
    }
  }
end:
  writeb(hostdata->ctrl | 0x40, base + CTRL);

	if (len)
		return -1;
	return 0;
}


Contributors
PersonTokensPropCommitsCommitProp
Russell King25954.41%225.00%


Linus Torvalds (pre-git)18338.45%112.50%


Finn Thain255.25%450.00%


Dave Jones91.89%112.50%


Total476100.00%8100.00%






static inline int cumanascsi_pread(struct NCR5380_hostdata *hostdata,
                                   unsigned char *addr, int len)
{
  unsigned long *laddr;
  u8 __iomem *base = hostdata->io;
  u8 __iomem *dma = hostdata->pdma_io + 0x2000;

  if(!len) return 0;

  writeb(0x00, base + CTRL);
  laddr = (unsigned long *)addr;
  while(len >= 32)
  {
    unsigned int status;
    status = readb(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, base + CTRL);

  while(len > 0)
  {
    unsigned int status;
    status = readb(base + STAT);
    if(status & 0x80)
      goto end;
    if(status & 0x40)
    {
      *addr++ = readb(dma);
      if(--len == 0)
        break;
    }

    status = readb(base + STAT);
    if(status & 0x80)
      goto end;
    if(status & 0x40)
    {
      *addr++ = readb(dma);
      if(--len == 0)
        break;
    }
  }
end:
  writeb(hostdata->ctrl | 0x40, base + CTRL);

	if (len)
		return -1;
	return 0;
}


Contributors
PersonTokensPropCommitsCommitProp
Russell King27467.16%228.57%


Linus Torvalds (pre-git)10926.72%114.29%


Finn Thain256.13%457.14%


Total408100.00%7100.00%






static int cumanascsi_dma_xfer_len(struct NCR5380_hostdata *hostdata,
                                   struct scsi_cmnd *cmd)
{
	return cmd->transfersize;
}


Contributors
PersonTokensPropCommitsCommitProp
Finn Thain21100.00%1100.00%


Total21100.00%1100.00%






static u8 cumanascsi_read(struct NCR5380_hostdata *hostdata,
                          unsigned int reg)
{
	u8 __iomem *base = hostdata->io;
	u8 val;

	writeb(0, base + CTRL);

	val = readb(base + 0x2100 + (reg << 2));

	hostdata->ctrl = 0x40;
	writeb(0x40, base + CTRL);

	return val;
}


Contributors
PersonTokensPropCommitsCommitProp
Russell King5173.91%240.00%


Linus Torvalds (pre-git)1014.49%120.00%


Finn Thain811.59%240.00%


Total69100.00%5100.00%






static void cumanascsi_write(struct NCR5380_hostdata *hostdata,
                             unsigned int reg, u8 value)
{
	u8 __iomem *base = hostdata->io;

	writeb(0, base + CTRL);

	writeb(value, base + 0x2100 + (reg << 2));

	hostdata->ctrl = 0x40;
	writeb(0x40, base + CTRL);
}


Contributors
PersonTokensPropCommitsCommitProp
Russell King5684.85%240.00%


Finn Thain710.61%240.00%


Linus Torvalds (pre-git)34.55%120.00%


Total66100.00%5100.00%



#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",
	.cmd_size		= NCR5380_CMD_SIZE,
	.max_sectors		= 128,
};




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)->io = ioremap(ecard_resource_start(ec, ECARD_RES_IOCSLOW),
	                         ecard_resource_len(ec, ECARD_RES_IOCSLOW));
	priv(host)->pdma_io = ioremap(ecard_resource_start(ec, ECARD_RES_MEMC),
	                              ecard_resource_len(ec, ECARD_RES_MEMC));
	if (!priv(host)->io || !priv(host)->pdma_io) {
		ret = -ENOMEM;
		goto out_unmap;
	}

	host->irq = ec->irq;

	ret = NCR5380_init(host, FLAG_DMA_FIXUP | FLAG_LATE_DMA_SETUP);
	if (ret)
		goto out_unmap;

	NCR5380_maybe_reset_bus(host);

        priv(host)->ctrl = 0;
        writeb(0, priv(host)->io + CTRL);

	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_exit;
	}

	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_exit:
	NCR5380_exit(host);
 out_unmap:
	iounmap(priv(host)->io);
	iounmap(priv(host)->pdma_io);
	scsi_host_put(host);
 out_release:
	ecard_release_resources(ec);
 out:
	return ret;
}


Contributors
PersonTokensPropCommitsCommitProp
Russell King23271.83%323.08%


Linus Torvalds (pre-git)4112.69%17.69%


Finn Thain329.91%538.46%


Christoph Hellwig123.72%215.38%


Mike Anderson51.55%17.69%


Michael Opdenacker10.31%17.69%


Total323100.00%13100.00%






static void cumanascsi1_remove(struct expansion_card *ec)
{
	struct Scsi_Host *host = ecard_get_drvdata(ec);
	void __iomem *base = priv(host)->io;
	void __iomem *dma = priv(host)->pdma_io;

	ecard_set_drvdata(ec, NULL);

	scsi_remove_host(host);
	free_irq(host->irq, host);
	NCR5380_exit(host);
	scsi_host_put(host);
	iounmap(base);
	iounmap(dma);
	ecard_release_resources(ec);
}


Contributors
PersonTokensPropCommitsCommitProp
Russell King3639.56%240.00%


Finn Thain2830.77%120.00%


Linus Torvalds (pre-git)2224.18%120.00%


James Bottomley55.49%120.00%


Total91100.00%5100.00%




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);
}


Contributors
PersonTokensPropCommitsCommitProp
Linus Torvalds1487.50%150.00%


Russell King212.50%150.00%


Total16100.00%2100.00%






static void __exit cumanascsi_exit(void)
{
	ecard_remove_driver(&cumanascsi1_driver);
}


Contributors
PersonTokensPropCommitsCommitProp
Linus Torvalds1386.67%150.00%


Russell King213.33%150.00%


Total15100.00%2100.00%




module_init(cumanascsi_init);

module_exit(cumanascsi_exit);

MODULE_DESCRIPTION("Cumana SCSI-1 driver for Acorn machines");
MODULE_LICENSE("GPL");

Overall Contributors
PersonTokensPropCommitsCommitProp
Russell King106360.06%618.75%


Linus Torvalds (pre-git)38821.92%13.12%


Finn Thain20811.75%1443.75%


Linus Torvalds754.24%26.25%


Christoph Hellwig140.79%39.38%


Dave Jones90.51%13.12%


James Bottomley50.28%13.12%


Mike Anderson50.28%13.12%


Michael Opdenacker10.06%13.12%


Arjan van de Ven10.06%13.12%


Adrian Bunk10.06%13.12%


Greg Kroah-Hartman0.00%00.00%


Total1770100.00%32100.00%


Directory: drivers/scsi/arm



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