--- /dev/null
+/*
+ * 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. (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 __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_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);
Code Review / kvmfornfv.git / blobdiff