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240 lines
5.8 KiB
240 lines
5.8 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* sim710.c - Copyright (C) 1999 Richard Hirst <[email protected]> |
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* |
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*---------------------------------------------------------------------------- |
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*---------------------------------------------------------------------------- |
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* |
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* MCA card detection code by Trent McNair. (now deleted) |
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* Fixes to not explicitly nul bss data from Xavier Bestel. |
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* Some multiboard fixes from Rolf Eike Beer. |
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* Auto probing of EISA config space from Trevor Hemsley. |
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* |
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* Rewritten to use 53c700.c by [email protected] |
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*/ |
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#include <linux/module.h> |
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#include <linux/slab.h> |
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#include <linux/blkdev.h> |
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#include <linux/device.h> |
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#include <linux/init.h> |
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#include <linux/eisa.h> |
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#include <linux/interrupt.h> |
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#include <scsi/scsi_host.h> |
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#include <scsi/scsi_device.h> |
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#include <scsi/scsi_transport.h> |
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#include <scsi/scsi_transport_spi.h> |
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#include "53c700.h" |
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/* Must be enough for EISA */ |
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#define MAX_SLOTS 8 |
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static __u8 __initdata id_array[MAX_SLOTS] = { [0 ... MAX_SLOTS-1] = 7 }; |
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static char *sim710; /* command line passed by insmod */ |
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MODULE_AUTHOR("Richard Hirst"); |
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MODULE_DESCRIPTION("Simple NCR53C710 driver"); |
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MODULE_LICENSE("GPL"); |
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module_param(sim710, charp, 0); |
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#ifdef MODULE |
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#define ARG_SEP ' ' |
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#else |
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#define ARG_SEP ',' |
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#endif |
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static __init int |
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param_setup(char *str) |
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{ |
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char *pos = str, *next; |
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int slot = -1; |
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while(pos != NULL && (next = strchr(pos, ':')) != NULL) { |
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int val = (int)simple_strtoul(++next, NULL, 0); |
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if(!strncmp(pos, "slot:", 5)) |
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slot = val; |
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else if(!strncmp(pos, "id:", 3)) { |
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if(slot == -1) { |
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printk(KERN_WARNING "sim710: Must specify slot for id parameter\n"); |
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} else if(slot >= MAX_SLOTS) { |
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printk(KERN_WARNING "sim710: Illegal slot %d for id %d\n", slot, val); |
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} else { |
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id_array[slot] = val; |
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} |
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} |
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if((pos = strchr(pos, ARG_SEP)) != NULL) |
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pos++; |
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} |
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return 1; |
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} |
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__setup("sim710=", param_setup); |
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static struct scsi_host_template sim710_driver_template = { |
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.name = "LSI (Symbios) 710 EISA", |
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.proc_name = "sim710", |
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.this_id = 7, |
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.module = THIS_MODULE, |
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}; |
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static int sim710_probe_common(struct device *dev, unsigned long base_addr, |
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int irq, int clock, int differential, |
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int scsi_id) |
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{ |
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struct Scsi_Host * host = NULL; |
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struct NCR_700_Host_Parameters *hostdata = |
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kzalloc(sizeof(struct NCR_700_Host_Parameters), GFP_KERNEL); |
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printk(KERN_NOTICE "sim710: %s\n", dev_name(dev)); |
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printk(KERN_NOTICE "sim710: irq = %d, clock = %d, base = 0x%lx, scsi_id = %d\n", |
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irq, clock, base_addr, scsi_id); |
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if(hostdata == NULL) { |
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printk(KERN_ERR "sim710: Failed to allocate host data\n"); |
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goto out; |
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} |
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if(request_region(base_addr, 64, "sim710") == NULL) { |
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printk(KERN_ERR "sim710: Failed to reserve IO region 0x%lx\n", |
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base_addr); |
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goto out_free; |
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} |
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/* Fill in the three required pieces of hostdata */ |
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hostdata->base = ioport_map(base_addr, 64); |
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hostdata->differential = differential; |
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hostdata->clock = clock; |
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hostdata->chip710 = 1; |
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hostdata->burst_length = 8; |
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/* and register the chip */ |
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if((host = NCR_700_detect(&sim710_driver_template, hostdata, dev)) |
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== NULL) { |
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printk(KERN_ERR "sim710: No host detected; card configuration problem?\n"); |
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goto out_release; |
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} |
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host->this_id = scsi_id; |
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host->base = base_addr; |
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host->irq = irq; |
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if (request_irq(irq, NCR_700_intr, IRQF_SHARED, "sim710", host)) { |
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printk(KERN_ERR "sim710: request_irq failed\n"); |
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goto out_put_host; |
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} |
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dev_set_drvdata(dev, host); |
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scsi_scan_host(host); |
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return 0; |
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out_put_host: |
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scsi_host_put(host); |
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out_release: |
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release_region(base_addr, 64); |
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out_free: |
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kfree(hostdata); |
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out: |
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return -ENODEV; |
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} |
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static int sim710_device_remove(struct device *dev) |
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{ |
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struct Scsi_Host *host = dev_get_drvdata(dev); |
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struct NCR_700_Host_Parameters *hostdata = |
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(struct NCR_700_Host_Parameters *)host->hostdata[0]; |
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scsi_remove_host(host); |
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NCR_700_release(host); |
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kfree(hostdata); |
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free_irq(host->irq, host); |
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release_region(host->base, 64); |
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return 0; |
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} |
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#ifdef CONFIG_EISA |
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static struct eisa_device_id sim710_eisa_ids[] = { |
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{ "CPQ4410" }, |
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{ "CPQ4411" }, |
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{ "HWP0C80" }, |
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{ "" } |
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}; |
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MODULE_DEVICE_TABLE(eisa, sim710_eisa_ids); |
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static int sim710_eisa_probe(struct device *dev) |
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{ |
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struct eisa_device *edev = to_eisa_device(dev); |
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unsigned long io_addr = edev->base_addr; |
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char eisa_cpq_irqs[] = { 11, 14, 15, 10, 9, 0 }; |
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char eisa_hwp_irqs[] = { 3, 4, 5, 7, 12, 10, 11, 0}; |
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char *eisa_irqs; |
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unsigned char irq_index; |
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unsigned char irq, differential = 0, scsi_id = 7; |
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if(strcmp(edev->id.sig, "HWP0C80") == 0) { |
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__u8 val; |
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eisa_irqs = eisa_hwp_irqs; |
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irq_index = (inb(io_addr + 0xc85) & 0x7) - 1; |
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val = inb(io_addr + 0x4); |
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scsi_id = ffs(val) - 1; |
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if(scsi_id > 7 || (val & ~(1<<scsi_id)) != 0) { |
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printk(KERN_ERR "sim710.c, EISA card %s has incorrect scsi_id, setting to 7\n", dev_name(dev)); |
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scsi_id = 7; |
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} |
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} else { |
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eisa_irqs = eisa_cpq_irqs; |
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irq_index = inb(io_addr + 0xc88) & 0x07; |
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} |
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if(irq_index >= strlen(eisa_irqs)) { |
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printk("sim710.c: irq nasty\n"); |
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return -ENODEV; |
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} |
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irq = eisa_irqs[irq_index]; |
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return sim710_probe_common(dev, io_addr, irq, 50, |
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differential, scsi_id); |
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} |
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static struct eisa_driver sim710_eisa_driver = { |
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.id_table = sim710_eisa_ids, |
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.driver = { |
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.name = "sim710", |
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.probe = sim710_eisa_probe, |
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.remove = sim710_device_remove, |
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}, |
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}; |
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#endif /* CONFIG_EISA */ |
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static int __init sim710_init(void) |
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{ |
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#ifdef MODULE |
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if (sim710) |
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param_setup(sim710); |
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#endif |
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#ifdef CONFIG_EISA |
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/* |
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* FIXME: We'd really like to return -ENODEV if no devices have actually |
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* been found. However eisa_driver_register() only reports problems |
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* with kobject_register() so simply return success for now. |
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*/ |
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eisa_driver_register(&sim710_eisa_driver); |
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#endif |
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return 0; |
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} |
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static void __exit sim710_exit(void) |
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{ |
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#ifdef CONFIG_EISA |
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eisa_driver_unregister(&sim710_eisa_driver); |
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#endif |
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} |
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module_init(sim710_init); |
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module_exit(sim710_exit);
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