diff options
Diffstat (limited to 'drivers/scsi/sim710.c')
| -rw-r--r-- | drivers/scsi/sim710.c | 372 |
1 files changed, 372 insertions, 0 deletions
diff --git a/drivers/scsi/sim710.c b/drivers/scsi/sim710.c new file mode 100644 index 0000000..63bf2ae --- /dev/null +++ b/drivers/scsi/sim710.c @@ -0,0 +1,372 @@ +/* + * sim710.c - Copyright (C) 1999 Richard Hirst <richard@sleepie.demon.co.uk> + * + *---------------------------------------------------------------------------- + * 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. + *---------------------------------------------------------------------------- + * + * MCA card detection code by Trent McNair. + * Fixes to not explicitly nul bss data from Xavier Bestel. + * Some multiboard fixes from Rolf Eike Beer. + * Auto probing of EISA config space from Trevor Hemsley. + * + * Rewritten to use 53c700.c by James.Bottomley@SteelEye.com + * + */ + +#include <linux/config.h> +#include <linux/module.h> + +#include <linux/blkdev.h> +#include <linux/device.h> +#include <linux/init.h> +#include <linux/mca.h> +#include <linux/eisa.h> +#include <linux/interrupt.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" + + +/* Must be enough for both EISA and MCA */ +#define MAX_SLOTS 8 +static __u8 __initdata id_array[MAX_SLOTS] = { [0 ... MAX_SLOTS-1] = 7 }; + +static char *sim710; /* command line passed by insmod */ + +MODULE_AUTHOR("Richard Hirst"); +MODULE_DESCRIPTION("Simple NCR53C710 driver"); +MODULE_LICENSE("GPL"); + +module_param(sim710, charp, 0); + +#ifdef MODULE +#define ARG_SEP ' ' +#else +#define ARG_SEP ',' +#endif + +static __init int +param_setup(char *str) +{ + char *pos = str, *next; + int slot = -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, "id:", 3)) { + if(slot == -1) { + printk(KERN_WARNING "sim710: Must specify slot for id parameter\n"); + } else if(slot > MAX_SLOTS) { + printk(KERN_WARNING "sim710: Illegal slot %d for id %d\n", slot, val); + } else { + id_array[slot] = val; + } + } + if((pos = strchr(pos, ARG_SEP)) != NULL) + pos++; + } + return 1; +} +__setup("sim710=", param_setup); + +static struct scsi_host_template sim710_driver_template = { + .name = "LSI (Symbios) 710 MCA/EISA", + .proc_name = "sim710", + .this_id = 7, + .module = THIS_MODULE, +}; + +static __devinit int +sim710_probe_common(struct device *dev, unsigned long base_addr, + int irq, int clock, int differential, int scsi_id) +{ + struct Scsi_Host * host = NULL; + struct NCR_700_Host_Parameters *hostdata = + kmalloc(sizeof(struct NCR_700_Host_Parameters), GFP_KERNEL); + + printk(KERN_NOTICE "sim710: %s\n", dev->bus_id); + printk(KERN_NOTICE "sim710: irq = %d, clock = %d, base = 0x%lx, scsi_id = %d\n", + irq, clock, base_addr, scsi_id); + + if(hostdata == NULL) { + printk(KERN_ERR "sim710: Failed to allocate host data\n"); + goto out; + } + memset(hostdata, 0, sizeof(struct NCR_700_Host_Parameters)); + + if(request_region(base_addr, 64, "sim710") == NULL) { + printk(KERN_ERR "sim710: Failed to reserve IO region 0x%lx\n", + base_addr); + goto out_free; + } + + /* Fill in the three required pieces of hostdata */ + hostdata->base = base_addr; + hostdata->differential = differential; + hostdata->clock = clock; + hostdata->chip710 = 1; + NCR_700_set_io_mapped(hostdata); + + /* and register the chip */ + if((host = NCR_700_detect(&sim710_driver_template, hostdata, dev)) + == NULL) { + printk(KERN_ERR "sim710: No host detected; card configuration problem?\n"); + goto out_release; + } + host->this_id = scsi_id; + host->irq = irq; + if (request_irq(irq, NCR_700_intr, SA_SHIRQ, "sim710", host)) { + printk(KERN_ERR "sim710: request_irq failed\n"); + goto out_put_host; + } + + scsi_scan_host(host); + + return 0; + + out_put_host: + scsi_host_put(host); + out_release: + release_region(host->base, 64); + out_free: + kfree(hostdata); + out: + return -ENODEV; +} + +static __devexit int +sim710_device_remove(struct device *dev) +{ + struct Scsi_Host *host = dev_to_shost(dev); + struct NCR_700_Host_Parameters *hostdata = + (struct NCR_700_Host_Parameters *)host->hostdata[0]; + + scsi_remove_host(host); + NCR_700_release(host); + kfree(hostdata); + free_irq(host->irq, host); + return 0; +} + +#ifdef CONFIG_MCA + +/* CARD ID 01BB and 01BA use the same pos values */ +#define MCA_01BB_IO_PORTS { 0x0000, 0x0000, 0x0800, 0x0C00, 0x1000, 0x1400, \ + 0x1800, 0x1C00, 0x2000, 0x2400, 0x2800, \ + 0x2C00, 0x3000, 0x3400, 0x3800, 0x3C00, \ + 0x4000, 0x4400, 0x4800, 0x4C00, 0x5000 } + +#define MCA_01BB_IRQS { 3, 5, 11, 14 } + +/* CARD ID 004f */ +#define MCA_004F_IO_PORTS { 0x0000, 0x0200, 0x0300, 0x0400, 0x0500, 0x0600 } +#define MCA_004F_IRQS { 5, 9, 14 } + +static short sim710_mca_id_table[] = { 0x01bb, 0x01ba, 0x004f, 0}; + +static __init int +sim710_mca_probe(struct device *dev) +{ + struct mca_device *mca_dev = to_mca_device(dev); + int slot = mca_dev->slot; + int pos[3]; + unsigned int base; + int irq_vector; + short id = sim710_mca_id_table[mca_dev->index]; + static int io_004f_by_pos[] = MCA_004F_IO_PORTS; + static int irq_004f_by_pos[] = MCA_004F_IRQS; + static int io_01bb_by_pos[] = MCA_01BB_IO_PORTS; + static int irq_01bb_by_pos[] = MCA_01BB_IRQS; + char *name; + int clock; + + pos[0] = mca_device_read_stored_pos(mca_dev, 2); + pos[1] = mca_device_read_stored_pos(mca_dev, 3); + pos[2] = mca_device_read_stored_pos(mca_dev, 4); + + /* + * 01BB & 01BA port base by bits 7,6,5,4,3,2 in pos[2] + * + * 000000 <disabled> 001010 0x2800 + * 000001 <invalid> 001011 0x2C00 + * 000010 0x0800 001100 0x3000 + * 000011 0x0C00 001101 0x3400 + * 000100 0x1000 001110 0x3800 + * 000101 0x1400 001111 0x3C00 + * 000110 0x1800 010000 0x4000 + * 000111 0x1C00 010001 0x4400 + * 001000 0x2000 010010 0x4800 + * 001001 0x2400 010011 0x4C00 + * 010100 0x5000 + * + * 00F4 port base by bits 3,2,1 in pos[0] + * + * 000 <disabled> 001 0x200 + * 010 0x300 011 0x400 + * 100 0x500 101 0x600 + * + * 01BB & 01BA IRQ is specified in pos[0] bits 7 and 6: + * + * 00 3 10 11 + * 01 5 11 14 + * + * 00F4 IRQ specified by bits 6,5,4 in pos[0] + * + * 100 5 101 9 + * 110 14 + */ + + if (id == 0x01bb || id == 0x01ba) { + base = io_01bb_by_pos[(pos[2] & 0xFC) >> 2]; + irq_vector = + irq_01bb_by_pos[((pos[0] & 0xC0) >> 6)]; + + clock = 50; + if (id == 0x01bb) + name = "NCR 3360/3430 SCSI SubSystem"; + else + name = "NCR Dual SIOP SCSI Host Adapter Board"; + } else if ( id == 0x004f ) { + base = io_004f_by_pos[((pos[0] & 0x0E) >> 1)]; + irq_vector = + irq_004f_by_pos[((pos[0] & 0x70) >> 4) - 4]; + clock = 50; + name = "NCR 53c710 SCSI Host Adapter Board"; + } else { + return -ENODEV; + } + mca_device_set_name(mca_dev, name); + mca_device_set_claim(mca_dev, 1); + base = mca_device_transform_ioport(mca_dev, base); + irq_vector = mca_device_transform_irq(mca_dev, irq_vector); + + return sim710_probe_common(dev, base, irq_vector, clock, + 0, id_array[slot]); +} + +static struct mca_driver sim710_mca_driver = { + .id_table = sim710_mca_id_table, + .driver = { + .name = "sim710", + .bus = &mca_bus_type, + .probe = sim710_mca_probe, + .remove = __devexit_p(sim710_device_remove), + }, +}; + +#endif /* CONFIG_MCA */ + +#ifdef CONFIG_EISA +static struct eisa_device_id sim710_eisa_ids[] = { + { "CPQ4410" }, + { "CPQ4411" }, + { "HWP0C80" }, + { "" } +}; + +static __init int +sim710_eisa_probe(struct device *dev) +{ + struct eisa_device *edev = to_eisa_device(dev); + unsigned long io_addr = edev->base_addr; + char eisa_cpq_irqs[] = { 11, 14, 15, 10, 9, 0 }; + char eisa_hwp_irqs[] = { 3, 4, 5, 7, 12, 10, 11, 0}; + char *eisa_irqs; + unsigned char irq_index; + unsigned char irq, differential = 0, scsi_id = 7; + + if(strcmp(edev->id.sig, "HWP0C80") == 0) { + __u8 val; + eisa_irqs = eisa_hwp_irqs; + irq_index = (inb(io_addr + 0xc85) & 0x7) - 1; + + val = inb(io_addr + 0x4); + scsi_id = ffs(val) - 1; + + if(scsi_id > 7 || (val & ~(1<<scsi_id)) != 0) { + printk(KERN_ERR "sim710.c, EISA card %s has incorrect scsi_id, setting to 7\n", dev->bus_id); + scsi_id = 7; + } + } else { + eisa_irqs = eisa_cpq_irqs; + irq_index = inb(io_addr + 0xc88) & 0x07; + } + + if(irq_index >= strlen(eisa_irqs)) { + printk("sim710.c: irq nasty\n"); + return -ENODEV; + } + + irq = eisa_irqs[irq_index]; + + return sim710_probe_common(dev, io_addr, irq, 50, + differential, scsi_id); +} + +static struct eisa_driver sim710_eisa_driver = { + .id_table = sim710_eisa_ids, + .driver = { + .name = "sim710", + .probe = sim710_eisa_probe, + .remove = __devexit_p(sim710_device_remove), + }, +}; +#endif /* CONFIG_EISA */ + +static int __init sim710_init(void) +{ + int err = -ENODEV; + +#ifdef MODULE + if (sim710) + param_setup(sim710); +#endif + +#ifdef CONFIG_MCA + err = mca_register_driver(&sim710_mca_driver); +#endif + +#ifdef CONFIG_EISA + err = eisa_driver_register(&sim710_eisa_driver); +#endif + /* FIXME: what we'd really like to return here is -ENODEV if + * no devices have actually been found. Instead, the err + * above actually only reports problems with kobject_register, + * so for the moment return success */ + + return 0; +} + +static void __exit sim710_exit(void) +{ +#ifdef CONFIG_MCA + if (MCA_bus) + mca_unregister_driver(&sim710_mca_driver); +#endif + +#ifdef CONFIG_EISA + eisa_driver_unregister(&sim710_eisa_driver); +#endif +} + +module_init(sim710_init); +module_exit(sim710_exit); |
