diff options
Diffstat (limited to 'drivers/scsi/NCR_D700.c')
| -rw-r--r-- | drivers/scsi/NCR_D700.c | 405 |
1 files changed, 0 insertions, 405 deletions
diff --git a/drivers/scsi/NCR_D700.c b/drivers/scsi/NCR_D700.c deleted file mode 100644 index b39a2409a507..000000000000 --- a/drivers/scsi/NCR_D700.c +++ /dev/null @@ -1,405 +0,0 @@ -/* -*- 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); |