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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* sim710.c - Copyright (C) 1999 Richard Hirst <richard@sleepie.demon.co.uk>
*
*----------------------------------------------------------------------------
*----------------------------------------------------------------------------
*
* MCA card detection code by Trent McNair. (now deleted)
* 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/module.h>
#include <linux/slab.h>
#include <linux/blkdev.h>
#include <linux/device.h>
#include <linux/init.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 EISA */
#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 EISA",
.proc_name = "sim710",
.this_id = 7,
.module = THIS_MODULE,
};
static 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 =
kzalloc(sizeof(struct NCR_700_Host_Parameters), GFP_KERNEL);
printk(KERN_NOTICE "sim710: %s\n", dev_name(dev));
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;
}
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 = ioport_map(base_addr, 64);
hostdata->differential = differential;
hostdata->clock = clock;
hostdata->chip710 = 1;
hostdata->burst_length = 8;
/* 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->base = base_addr;
host->irq = irq;
if (request_irq(irq, NCR_700_intr, IRQF_SHARED, "sim710", host)) {
printk(KERN_ERR "sim710: request_irq failed\n");
goto out_put_host;
}
dev_set_drvdata(dev, host);
scsi_scan_host(host);
return 0;
out_put_host:
scsi_host_put(host);
out_release:
release_region(base_addr, 64);
out_free:
kfree(hostdata);
out:
return -ENODEV;
}
static int sim710_device_remove(struct device *dev)
{
struct Scsi_Host *host = dev_get_drvdata(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);
release_region(host->base, 64);
return 0;
}
#ifdef CONFIG_EISA
static struct eisa_device_id sim710_eisa_ids[] = {
{ "CPQ4410" },
{ "CPQ4411" },
{ "HWP0C80" },
{ "" }
};
MODULE_DEVICE_TABLE(eisa, sim710_eisa_ids);
static 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_name(dev));
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 = 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_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_EISA
eisa_driver_unregister(&sim710_eisa_driver);
#endif
}
module_init(sim710_init);
module_exit(sim710_exit);
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