// 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 8static __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 intparam_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_obj(struct NCR_700_Host_Parameters); 	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:	ioport_unmap(hostdata->base);	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);	ioport_unmap(hostdata->base);	kfree(hostdata);	free_irq(host->irq, host);	release_region(host->base, 64);	return 0;} #ifdef CONFIG_EISAstatic 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){#ifdef MODULE	if (sim710)		param_setup(sim710);#endif #ifdef CONFIG_EISA	/*	 * FIXME: We'd really like to return -ENODEV if no devices have actually	 * been found.  However eisa_driver_register() only reports problems	 * with kobject_register() so simply return success for now.	 */	eisa_driver_register(&sim710_eisa_driver);#endif	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);