scsi: remove NCR_D700 driver (54e45716) · Commits · 戴 / test

MAINTAINERS

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		@@ -9750,12 +9750,6 @@ F: drivers/scsi/mac_scsi.*
		F: drivers/scsi/sun3_scsi.*
		F: drivers/scsi/sun3_scsi_vme.c

		NCR DUAL 700 SCSI DRIVER (MICROCHANNEL)
		M: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>
		L: linux-scsi@vger.kernel.org
		S: Maintained
		F: drivers/scsi/NCR_D700.*

		NCT6775 HARDWARE MONITOR DRIVER
		M: Guenter Roeck <linux@roeck-us.net>
		L: linux-hwmon@vger.kernel.org

drivers/scsi/Kconfig

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		@@ -842,18 +842,6 @@ config SCSI_IZIP_SLOW_CTR

		Generally, saying N is fine.

		config SCSI_NCR_D700
		tristate "NCR Dual 700 MCA SCSI support"
		depends on MCA && SCSI
		select SCSI_SPI_ATTRS
		help
		This is a driver for the MicroChannel Dual 700 card produced by
		NCR and commonly used in 345x/35xx/4100 class machines. It always
		tries to negotiate sync and uses tag command queueing.

		Unless you have an NCR manufactured machine, the chances are that
		you do not have this SCSI card, so say N.

		config SCSI_LASI700
		tristate "HP Lasi SCSI support for 53c700/710"
		depends on GSC && SCSI

drivers/scsi/Makefile

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		@@ -76,7 +76,6 @@ obj-$(CONFIG_SCSI_PM8001) += pm8001/
		obj-$(CONFIG_SCSI_ISCI) += isci/
		obj-$(CONFIG_SCSI_IPS) += ips.o
		obj-$(CONFIG_SCSI_GENERIC_NCR5380) += g_NCR5380.o
		obj-$(CONFIG_SCSI_NCR_D700) += 53c700.o NCR_D700.o
		obj-$(CONFIG_SCSI_NCR_Q720) += NCR_Q720_mod.o
		obj-$(CONFIG_SCSI_QLOGIC_FAS) += qlogicfas408.o qlogicfas.o
		obj-$(CONFIG_PCMCIA_QLOGIC) += qlogicfas408.o

drivers/scsi/NCR_D700.c

deleted100644 → 0

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		/* -- mode: c; c-basic-offset: 8 -- */

		/* NCR Dual 700 MCA SCSI Driver
		*
		* Copyright (C) 2001 by James.Bottomley@HansenPartnership.com
		**-----------------------------------------------------------------------------
		**
		** This program is free software; you can redistribute it and/or modify
		** it under the terms of the GNU General Public License as published by
		** the Free Software Foundation; either version 2 of the License, or
		** (at your option) any later version.
		**
		** This program is distributed in the hope that it will be useful,
		** but WITHOUT ANY WARRANTY; without even the implied warranty of
		** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
		** GNU General Public License for more details.
		**
		** You should have received a copy of the GNU General Public License
		** along with this program; if not, write to the Free Software
		** Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
		**
		**-----------------------------------------------------------------------------
		*/

		/* Notes:
		*
		* Most of the work is done in the chip specific module, 53c700.o
		*
		* TODO List:
		*
		* 1. Extract the SCSI ID from the voyager CMOS table (necessary to
		* support multi-host environments.
		*
		* */


		/* CHANGELOG
		*
		* Version 2.2
		*
		* Added mca_set_adapter_name().
		*
		* Version 2.1
		*
		* Modularise the driver into a Board piece (this file) and a chip
		* piece 53c700.[ch] and 53c700.scr, added module options. You can
		* now specify the scsi id by the parameters
		*
		* NCR_D700=slot:<n> [siop:<n>] id:<n> ....
		*
		* They need to be comma separated if compiled into the kernel
		*
		* Version 2.0
		*
		* Initial implementation of TCQ (Tag Command Queueing). TCQ is full
		* featured and uses the clock algorithm to keep track of outstanding
		* tags and guard against individual tag starvation. Also fixed a bug
		* in all of the 1.x versions where the D700_data_residue() function
		* was returning results off by 32 bytes (and thus causing the same 32
		* bytes to be written twice corrupting the data block). It turns out
		* the 53c700 only has a 6 bit DBC and DFIFO registers not 7 bit ones
		* like the 53c710 (The 710 is the only data manual still available,
		* which I'd been using to program the 700).
		*
		* Version 1.2
		*
		* Much improved message handling engine
		*
		* Version 1.1
		*
		* Add code to handle selection reasonably correctly. By the time we
		* get the selection interrupt, we've already responded, but drop off the
		* bus and hope the selector will go away.
		*
		* Version 1.0:
		*
		* Initial release. Fully functional except for procfs and tag
		* command queueing. Has only been tested on cards with 53c700-66
		* chips and only single ended. Features are
		*
		* 1. Synchronous data transfers to offset 8 (limit of 700-66) and
		* 100ns (10MHz) limit of SCSI-2
		*
		* 2. Disconnection and reselection
		*
		* Testing:
		*
		* I've only really tested this with the 700-66 chip, but have done
		* soak tests in multi-device environments to verify that
		* disconnections and reselections are being processed correctly.
		* */

		#define NCR_D700_VERSION "2.2"

		#include <linux/blkdev.h>
		#include <linux/interrupt.h>
		#include <linux/kernel.h>
		#include <linux/module.h>
		#include <linux/mca.h>
		#include <linux/slab.h>
		#include <asm/io.h>
		#include <scsi/scsi_host.h>
		#include <scsi/scsi_device.h>
		#include <scsi/scsi_transport.h>
		#include <scsi/scsi_transport_spi.h>

		#include "53c700.h"
		#include "NCR_D700.h"

		static char NCR_D700; / command line from insmod */

		MODULE_AUTHOR("James Bottomley");
		MODULE_DESCRIPTION("NCR Dual700 SCSI Driver");
		MODULE_LICENSE("GPL");
		module_param(NCR_D700, charp, 0);

		static __u8 id_array[2*(MCA_MAX_SLOT_NR + 1)] =
		{ [0 ... 2*(MCA_MAX_SLOT_NR + 1)-1] = 7 };

		#ifdef MODULE
		#define ARG_SEP ' '
		#else
		#define ARG_SEP ','
		#endif

		static int __init
		param_setup(char *string)
		{
		char pos = string, next;
		int slot = -1, siop = -1;

		while(pos != NULL && (next = strchr(pos, ':')) != NULL) {
		int val = (int)simple_strtoul(++next, NULL, 0);

		if(!strncmp(pos, "slot:", 5))
		slot = val;
		else if(!strncmp(pos, "siop:", 5))
		siop = val;
		else if(!strncmp(pos, "id:", 3)) {
		if(slot == -1) {
		printk(KERN_WARNING "NCR D700: Must specify slot for id parameter\n");
		} else if(slot > MCA_MAX_SLOT_NR) {
		printk(KERN_WARNING "NCR D700: Illegal slot %d for id %d\n", slot, val);
		} else {
		if(siop != 0 && siop != 1) {
		id_array[slot*2] = val;
		id_array[slot*2 + 1] =val;
		} else {
		id_array[slot*2 + siop] = val;
		}
		}
		}
		if((pos = strchr(pos, ARG_SEP)) != NULL)
		pos++;
		}
		return 1;
		}

		/* Host template. The 53c700 routine NCR_700_detect will
		* fill in all of the missing routines */
		static struct scsi_host_template NCR_D700_driver_template = {
		.module = THIS_MODULE,
		.name = "NCR Dual 700 MCA",
		.proc_name = "NCR_D700",
		.this_id = 7,
		};

		/* We needs this helper because we have two hosts per struct device */
		struct NCR_D700_private {
		struct device *dev;
		struct Scsi_Host *hosts[2];
		char name[30];
		char pad;
		};

		static int
		NCR_D700_probe_one(struct NCR_D700_private *p, int siop, int irq,
		int slot, u32 region, int differential)
		{
		struct NCR_700_Host_Parameters *hostdata;
		struct Scsi_Host *host;
		int ret;

		hostdata = kzalloc(sizeof(*hostdata), GFP_KERNEL);
		if (!hostdata) {
		printk(KERN_ERR "NCR D700: SIOP%d: Failed to allocate host"
		"data, detatching\n", siop);
		return -ENOMEM;
		}

		if (!request_region(region, 64, "NCR_D700")) {
		printk(KERN_ERR "NCR D700: Failed to reserve IO region 0x%x\n",
		region);
		ret = -ENODEV;
		goto region_failed;
		}

		/* Fill in the three required pieces of hostdata */
		hostdata->base = ioport_map(region, 64);
		hostdata->differential = (((1<<siop) & differential) != 0);
		hostdata->clock = NCR_D700_CLOCK_MHZ;
		hostdata->burst_length = 8;

		/* and register the siop */
		host = NCR_700_detect(&NCR_D700_driver_template, hostdata, p->dev);
		if (!host) {
		ret = -ENOMEM;
		goto detect_failed;
		}

		p->hosts[siop] = host;
		/* FIXME: read this from SUS */
		host->this_id = id_array[slot * 2 + siop];
		host->irq = irq;
		host->base = region;
		scsi_scan_host(host);

		return 0;

		detect_failed:
		release_region(region, 64);
		region_failed:
		kfree(hostdata);

		return ret;
		}

		static irqreturn_t
		NCR_D700_intr(int irq, void *data)
		{
		struct NCR_D700_private p = (struct NCR_D700_private )data;
		int i, found = 0;

		for (i = 0; i < 2; i++)
		if (p->hosts[i] &&
		NCR_700_intr(irq, p->hosts[i]) == IRQ_HANDLED)
		found++;

		return found ? IRQ_HANDLED : IRQ_NONE;
		}

		/* Detect a D700 card. Note, because of the setup --- the chips are
		* essentially connectecd to the MCA bus independently, it is easier
		* to set them up as two separate host adapters, rather than one
		* adapter with two channels */
		static int
		NCR_D700_probe(struct device *dev)
		{
		struct NCR_D700_private *p;
		int differential;
		static int banner = 1;
		struct mca_device *mca_dev = to_mca_device(dev);
		int slot = mca_dev->slot;
		int found = 0;
		int irq, i;
		int pos3j, pos3k, pos3a, pos3b, pos4;
		__u32 base_addr, offset_addr;

		/* enable board interrupt */
		pos4 = mca_device_read_pos(mca_dev, 4);
		pos4 \|= 0x4;
		mca_device_write_pos(mca_dev, 4, pos4);

		mca_device_write_pos(mca_dev, 6, 9);
		pos3j = mca_device_read_pos(mca_dev, 3);
		mca_device_write_pos(mca_dev, 6, 10);
		pos3k = mca_device_read_pos(mca_dev, 3);
		mca_device_write_pos(mca_dev, 6, 0);
		pos3a = mca_device_read_pos(mca_dev, 3);
		mca_device_write_pos(mca_dev, 6, 1);
		pos3b = mca_device_read_pos(mca_dev, 3);

		base_addr = ((pos3j << 8) \| pos3k) & 0xfffffff0;
		offset_addr = ((pos3a << 8) \| pos3b) & 0xffffff70;

		irq = (pos4 & 0x3) + 11;
		if(irq >= 13)
		irq++;
		if(banner) {
		printk(KERN_NOTICE "NCR D700: Driver Version " NCR_D700_VERSION "\n"
		"NCR D700: Copyright (c) 2001 by James.Bottomley@HansenPartnership.com\n"
		"NCR D700:\n");
		banner = 0;
		}
		/* now do the bus related transforms */
		irq = mca_device_transform_irq(mca_dev, irq);
		base_addr = mca_device_transform_ioport(mca_dev, base_addr);
		offset_addr = mca_device_transform_ioport(mca_dev, offset_addr);

		printk(KERN_NOTICE "NCR D700: found in slot %d irq = %d I/O base = 0x%x\n", slot, irq, offset_addr);

		/outb(BOARD_RESET, base_addr);/

		/* clear any pending interrupts */
		(void)inb(base_addr + 0x08);
		/* get modctl, used later for setting diff bits */
		switch(differential = (inb(base_addr + 0x08) >> 6)) {
		case 0x00:
		/* only SIOP1 differential */
		differential = 0x02;
		break;
		case 0x01:
		/* Both SIOPs differential */
		differential = 0x03;
		break;
		case 0x03:
		/* No SIOPs differential */
		differential = 0x00;
		break;
		default:
		printk(KERN_ERR "D700: UNEXPECTED DIFFERENTIAL RESULT 0x%02x\n",
		differential);
		differential = 0x00;
		break;
		}

		p = kzalloc(sizeof(*p), GFP_KERNEL);
		if (!p)
		return -ENOMEM;

		p->dev = dev;
		snprintf(p->name, sizeof(p->name), "D700(%s)", dev_name(dev));
		if (request_irq(irq, NCR_D700_intr, IRQF_SHARED, p->name, p)) {
		printk(KERN_ERR "D700: request_irq failed\n");
		kfree(p);
		return -EBUSY;
		}
		/* plumb in both 700 chips */
		for (i = 0; i < 2; i++) {
		int err;

		if ((err = NCR_D700_probe_one(p, i, irq, slot,
		offset_addr + (0x80 * i),
		differential)) != 0)
		printk("D700: SIOP%d: probe failed, error = %d\n",
		i, err);
		else
		found++;
		}

		if (!found) {
		kfree(p);
		return -ENODEV;
		}

		mca_device_set_claim(mca_dev, 1);
		mca_device_set_name(mca_dev, "NCR_D700");
		dev_set_drvdata(dev, p);
		return 0;
		}

		static void
		NCR_D700_remove_one(struct Scsi_Host *host)
		{
		scsi_remove_host(host);
		NCR_700_release(host);
		kfree((struct NCR_700_Host_Parameters *)host->hostdata[0]);
		free_irq(host->irq, host);
		release_region(host->base, 64);
		}

		static int
		NCR_D700_remove(struct device *dev)
		{
		struct NCR_D700_private *p = dev_get_drvdata(dev);
		int i;

		for (i = 0; i < 2; i++)
		NCR_D700_remove_one(p->hosts[i]);

		kfree(p);
		return 0;
		}

		static short NCR_D700_id_table[] = { NCR_D700_MCA_ID, 0 };

		static struct mca_driver NCR_D700_driver = {
		.id_table = NCR_D700_id_table,
		.driver = {
		.name = "NCR_D700",
		.bus = &mca_bus_type,
		.probe = NCR_D700_probe,
		.remove = NCR_D700_remove,
		},
		};

		static int __init NCR_D700_init(void)
		{
		#ifdef MODULE
		if (NCR_D700)
		param_setup(NCR_D700);
		#endif

		return mca_register_driver(&NCR_D700_driver);
		}

		static void __exit NCR_D700_exit(void)
		{
		mca_unregister_driver(&NCR_D700_driver);
		}

		module_init(NCR_D700_init);
		module_exit(NCR_D700_exit);

		__setup("NCR_D700=", param_setup);

drivers/scsi/NCR_D700.h

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		/* SPDX-License-Identifier: GPL-2.0 */
		/* -- mode: c; c-basic-offset: 8 -- */

		/* NCR Dual 700 MCA SCSI Driver
		*
		* Copyright (C) 2001 by James.Bottomley@HansenPartnership.com
		*/

		#ifndef _NCR_D700_H
		#define _NCR_D700_H

		/* Don't turn on debugging messages */
		#undef NCR_D700_DEBUG

		/* The MCA identifier */
		#define NCR_D700_MCA_ID 0x0092

		/* Defines for the Board registers */
		#define BOARD_RESET 0x80 /* board level reset */
		#define ADD_PARENB 0x04 /* Address Parity Enabled */
		#define DAT_PARENB 0x01 /* Data Parity Enabled */
		#define SFBK_ENB 0x10 /* SFDBK Interrupt Enabled */
		#define LED0GREEN 0x20 /* Led 0 (red 0; green 1) */
		#define LED1GREEN 0x40 /* Led 1 (red 0; green 1) */
		#define LED0RED 0xDF /* Led 0 (red 0; green 1) */
		#define LED1RED 0xBF /* Led 1 (red 0; green 1) */

		#define NCR_D700_CLOCK_MHZ 50

		#endif

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