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Commit a16efc1c authored by Kars de Jong's avatar Kars de Jong Committed by James Bottomley
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[SCSI] 53c700: Amiga 4000T NCR53c710 SCSI



New driver for the Amiga 4000T built-in NCR53c710 SCSI controller, using the
53c700 SCSI core.

Signed-off-by: default avatarGeert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: default avatarJames Bottomley <James.Bottomley@SteelEye.com>
parent 506c7bbc
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+12 −2
Original line number Diff line number Diff line
@@ -1008,7 +1008,7 @@ config SCSI_STEX

config 53C700_BE_BUS
	bool
	depends on MVME16x_SCSI || BVME6000_SCSI
	depends on SCSI_A4000T || MVME16x_SCSI || BVME6000_SCSI
	default y

config SCSI_SYM53C8XX_2
@@ -1614,13 +1614,23 @@ config FASTLANE_SCSI
	  If you have the Phase5 Fastlane Z3 SCSI controller, or plan to use
	  one in the near future, say Y to this question. Otherwise, say N.

config SCSI_A4000T
	tristate "A4000T NCR53c710 SCSI support (EXPERIMENTAL)"
	depends on AMIGA && SCSI && EXPERIMENTAL
	select SCSI_SPI_ATTRS
	help
	  If you have an Amiga 4000T and have SCSI devices connected to the
	  built-in SCSI controller, say Y. Otherwise, say N.

	  To compile this driver as a module, choose M here: the
	  module will be called a4000t.

config SCSI_AMIGA7XX
	bool "Amiga NCR53c710 SCSI support (EXPERIMENTAL)"
	depends on AMIGA && SCSI && EXPERIMENTAL && BROKEN
	help
	  Support for various NCR53c710-based SCSI controllers on the Amiga.
	  This includes:
	    - the builtin SCSI controller on the Amiga 4000T,
	    - the Amiga 4091 Zorro III SCSI-2 controller,
	    - the MacroSystem Development's WarpEngine Amiga SCSI-2 controller
	      (info at
+1 −0
Original line number Diff line number Diff line
@@ -37,6 +37,7 @@ obj-$(CONFIG_SCSI_SAS_LIBSAS) += libsas/

obj-$(CONFIG_ISCSI_TCP) 	+= libiscsi.o	iscsi_tcp.o
obj-$(CONFIG_INFINIBAND_ISER) 	+= libiscsi.o
obj-$(CONFIG_SCSI_A4000T)	+= 53c700.o	a4000t.o
obj-$(CONFIG_A3000_SCSI)	+= a3000.o	wd33c93.o
obj-$(CONFIG_A2091_SCSI)	+= a2091.o	wd33c93.o
obj-$(CONFIG_GVP11_SCSI)	+= gvp11.o	wd33c93.o

drivers/scsi/a4000t.c

0 → 100644
+142 −0
Original line number Diff line number Diff line
/*
 * Detection routine for the NCR53c710 based Amiga SCSI Controllers for Linux.
 *		Amiga Technologies A4000T SCSI controller.
 *
 * Written 1997 by Alan Hourihane <alanh@fairlite.demon.co.uk>
 * plus modifications of the 53c7xx.c driver to support the Amiga.
 *
 * Rewritten to use 53c700.c by Kars de Jong <jongk@linux-m68k.org>
 */

#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <asm/amigaints.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_transport_spi.h>

#include "53c700.h"

MODULE_AUTHOR("Alan Hourihane <alanh@fairlite.demon.co.uk> / Kars de Jong <jongk@linux-m68k.org>");
MODULE_DESCRIPTION("Amiga A4000T NCR53C710 driver");
MODULE_LICENSE("GPL");


static struct scsi_host_template a4000t_scsi_driver_template = {
	.name		= "A4000T builtin SCSI",
	.proc_name	= "A4000t",
	.this_id	= 7,
	.module		= THIS_MODULE,
};

static struct platform_device *a4000t_scsi_device;

#define A4000T_SCSI_ADDR 0xdd0040

static int __devinit a4000t_probe(struct device *dev)
{
	struct Scsi_Host * host = NULL;
	struct NCR_700_Host_Parameters *hostdata;

	if (!(MACH_IS_AMIGA && AMIGAHW_PRESENT(A4000_SCSI)))
		goto out;

	if (!request_mem_region(A4000T_SCSI_ADDR, 0x1000,
				"A4000T builtin SCSI"))
		goto out;

	hostdata = kmalloc(sizeof(struct NCR_700_Host_Parameters), GFP_KERNEL);
	if (hostdata == NULL) {
		printk(KERN_ERR "a4000t-scsi: Failed to allocate host data\n");
		goto out_release;
	}
	memset(hostdata, 0, sizeof(struct NCR_700_Host_Parameters));

	/* Fill in the required pieces of hostdata */
	hostdata->base = (void __iomem *)ZTWO_VADDR(A4000T_SCSI_ADDR);
	hostdata->clock = 50;
	hostdata->chip710 = 1;
	hostdata->dmode_extra = DMODE_FC2;
	hostdata->dcntl_extra = EA_710;

	/* and register the chip */
	host = NCR_700_detect(&a4000t_scsi_driver_template, hostdata, dev);
	if (!host) {
		printk(KERN_ERR "a4000t-scsi: No host detected; "
				"board configuration problem?\n");
		goto out_free;
	}

	host->this_id = 7;
	host->base = A4000T_SCSI_ADDR;
	host->irq = IRQ_AMIGA_PORTS;

	if (request_irq(host->irq, NCR_700_intr, IRQF_SHARED, "a4000t-scsi",
			host)) {
		printk(KERN_ERR "a4000t-scsi: request_irq failed\n");
		goto out_put_host;
	}

	scsi_scan_host(host);

	return 0;

 out_put_host:
	scsi_host_put(host);
 out_free:
	kfree(hostdata);
 out_release:
	release_mem_region(A4000T_SCSI_ADDR, 0x1000);
 out:
	return -ENODEV;
}

static __devexit int a4000t_device_remove(struct device *dev)
{
	struct Scsi_Host *host = dev_to_shost(dev);
	struct NCR_700_Host_Parameters *hostdata = shost_priv(host);

	scsi_remove_host(host);

	NCR_700_release(host);
	kfree(hostdata);
	free_irq(host->irq, host);
	release_mem_region(A4000T_SCSI_ADDR, 0x1000);

	return 0;
}

static struct device_driver a4000t_scsi_driver = {
	.name	= "a4000t-scsi",
	.bus	= &platform_bus_type,
	.probe	= a4000t_probe,
	.remove	= __devexit_p(a4000t_device_remove),
};

static int __init a4000t_scsi_init(void)
{
	int err;

	err = driver_register(&a4000t_scsi_driver);
	if (err)
		return err;

	a4000t_scsi_device = platform_device_register_simple("a4000t-scsi",
			-1, NULL, 0);
	if (IS_ERR(a4000t_scsi_device)) {
		driver_unregister(&a4000t_scsi_driver);
		return PTR_ERR(a4000t_scsi_device);
	}

	return err;
}

static void __exit a4000t_scsi_exit(void)
{
	platform_device_unregister(a4000t_scsi_device);
	driver_unregister(&a4000t_scsi_driver);
}

module_init(a4000t_scsi_init);
module_exit(a4000t_scsi_exit);