// 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);