Version:  2.0.40 2.2.26 2.4.37 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17

Linux/drivers/scsi/sim710.c

  1 /*
  2  * sim710.c - Copyright (C) 1999 Richard Hirst <richard@sleepie.demon.co.uk>
  3  *
  4  *----------------------------------------------------------------------------
  5  *  This program is free software; you can redistribute it and/or modify
  6  *  it under the terms of the GNU General Public License as published by 
  7  *  the Free Software Foundation; either version 2 of the License, or
  8  *  (at your option) any later version.
  9  *
 10  *  This program is distributed in the hope that it will be useful,
 11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 13  *  GNU General Public License for more details.
 14  *
 15  *  You should have received a copy of the GNU General Public License
 16  *  along with this program; if not, write to the Free Software
 17  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 18  *----------------------------------------------------------------------------
 19  *
 20  * MCA card detection code by Trent McNair. (now deleted)
 21  * Fixes to not explicitly nul bss data from Xavier Bestel.
 22  * Some multiboard fixes from Rolf Eike Beer.
 23  * Auto probing of EISA config space from Trevor Hemsley.
 24  *
 25  * Rewritten to use 53c700.c by James.Bottomley@SteelEye.com
 26  *
 27  */
 28 
 29 #include <linux/module.h>
 30 #include <linux/slab.h>
 31 
 32 #include <linux/blkdev.h>
 33 #include <linux/device.h>
 34 #include <linux/init.h>
 35 #include <linux/eisa.h>
 36 #include <linux/interrupt.h>
 37 #include <scsi/scsi_host.h>
 38 #include <scsi/scsi_device.h>
 39 #include <scsi/scsi_transport.h>
 40 #include <scsi/scsi_transport_spi.h>
 41 
 42 #include "53c700.h"
 43 
 44 
 45 /* Must be enough for EISA */
 46 #define MAX_SLOTS 8
 47 static __u8 __initdata id_array[MAX_SLOTS] = { [0 ... MAX_SLOTS-1] = 7 };
 48 
 49 static char *sim710;            /* command line passed by insmod */
 50 
 51 MODULE_AUTHOR("Richard Hirst");
 52 MODULE_DESCRIPTION("Simple NCR53C710 driver");
 53 MODULE_LICENSE("GPL");
 54 
 55 module_param(sim710, charp, 0);
 56 
 57 #ifdef MODULE
 58 #define ARG_SEP ' '
 59 #else
 60 #define ARG_SEP ','
 61 #endif
 62 
 63 static __init int
 64 param_setup(char *str)
 65 {
 66         char *pos = str, *next;
 67         int slot = -1;
 68 
 69         while(pos != NULL && (next = strchr(pos, ':')) != NULL) {
 70                 int val = (int)simple_strtoul(++next, NULL, 0);
 71 
 72                 if(!strncmp(pos, "slot:", 5))
 73                         slot = val;
 74                 else if(!strncmp(pos, "id:", 3)) {
 75                         if(slot == -1) {
 76                                 printk(KERN_WARNING "sim710: Must specify slot for id parameter\n");
 77                         } else if(slot >= MAX_SLOTS) {
 78                                 printk(KERN_WARNING "sim710: Illegal slot %d for id %d\n", slot, val);
 79                         } else {
 80                                 id_array[slot] = val;
 81                         }
 82                 }
 83                 if((pos = strchr(pos, ARG_SEP)) != NULL)
 84                         pos++;
 85         }
 86         return 1;
 87 }
 88 __setup("sim710=", param_setup);
 89 
 90 static struct scsi_host_template sim710_driver_template = {
 91         .name                   = "LSI (Symbios) 710 EISA",
 92         .proc_name              = "sim710",
 93         .this_id                = 7,
 94         .module                 = THIS_MODULE,
 95 };
 96 
 97 static int sim710_probe_common(struct device *dev, unsigned long base_addr,
 98                                int irq, int clock, int differential,
 99                                int scsi_id)
100 {
101         struct Scsi_Host * host = NULL;
102         struct NCR_700_Host_Parameters *hostdata =
103                 kzalloc(sizeof(struct NCR_700_Host_Parameters), GFP_KERNEL);
104 
105         printk(KERN_NOTICE "sim710: %s\n", dev_name(dev));
106         printk(KERN_NOTICE "sim710: irq = %d, clock = %d, base = 0x%lx, scsi_id = %d\n",
107                irq, clock, base_addr, scsi_id);
108 
109         if(hostdata == NULL) {
110                 printk(KERN_ERR "sim710: Failed to allocate host data\n");
111                 goto out;
112         }
113 
114         if(request_region(base_addr, 64, "sim710") == NULL) {
115                 printk(KERN_ERR "sim710: Failed to reserve IO region 0x%lx\n",
116                        base_addr);
117                 goto out_free;
118         }
119 
120         /* Fill in the three required pieces of hostdata */
121         hostdata->base = ioport_map(base_addr, 64);
122         hostdata->differential = differential;
123         hostdata->clock = clock;
124         hostdata->chip710 = 1;
125         hostdata->burst_length = 8;
126 
127         /* and register the chip */
128         if((host = NCR_700_detect(&sim710_driver_template, hostdata, dev))
129            == NULL) {
130                 printk(KERN_ERR "sim710: No host detected; card configuration problem?\n");
131                 goto out_release;
132         }
133         host->this_id = scsi_id;
134         host->base = base_addr;
135         host->irq = irq;
136         if (request_irq(irq, NCR_700_intr, IRQF_SHARED, "sim710", host)) {
137                 printk(KERN_ERR "sim710: request_irq failed\n");
138                 goto out_put_host;
139         }
140 
141         dev_set_drvdata(dev, host);
142         scsi_scan_host(host);
143 
144         return 0;
145 
146  out_put_host:
147         scsi_host_put(host);
148  out_release:
149         release_region(base_addr, 64);
150  out_free:
151         kfree(hostdata);
152  out:
153         return -ENODEV;
154 }
155 
156 static int sim710_device_remove(struct device *dev)
157 {
158         struct Scsi_Host *host = dev_get_drvdata(dev);
159         struct NCR_700_Host_Parameters *hostdata =
160                 (struct NCR_700_Host_Parameters *)host->hostdata[0];
161 
162         scsi_remove_host(host);
163         NCR_700_release(host);
164         kfree(hostdata);
165         free_irq(host->irq, host);
166         release_region(host->base, 64);
167         return 0;
168 }
169 
170 #ifdef CONFIG_EISA
171 static struct eisa_device_id sim710_eisa_ids[] = {
172         { "CPQ4410" },
173         { "CPQ4411" },
174         { "HWP0C80" },
175         { "" }
176 };
177 MODULE_DEVICE_TABLE(eisa, sim710_eisa_ids);
178 
179 static __init int
180 sim710_eisa_probe(struct device *dev)
181 {
182         struct eisa_device *edev = to_eisa_device(dev);
183         unsigned long io_addr = edev->base_addr;
184         char eisa_cpq_irqs[] = { 11, 14, 15, 10, 9, 0 };
185         char eisa_hwp_irqs[] = { 3, 4, 5, 7, 12, 10, 11, 0};
186         char *eisa_irqs;
187         unsigned char irq_index;
188         unsigned char irq, differential = 0, scsi_id = 7;
189 
190         if(strcmp(edev->id.sig, "HWP0C80") == 0) {
191                 __u8 val;
192                 eisa_irqs =  eisa_hwp_irqs;
193                 irq_index = (inb(io_addr + 0xc85) & 0x7) - 1;
194 
195                 val = inb(io_addr + 0x4);
196                 scsi_id = ffs(val) - 1;
197 
198                 if(scsi_id > 7 || (val & ~(1<<scsi_id)) != 0) {
199                         printk(KERN_ERR "sim710.c, EISA card %s has incorrect scsi_id, setting to 7\n", dev_name(dev));
200                         scsi_id = 7;
201                 }
202         } else {
203                 eisa_irqs = eisa_cpq_irqs;
204                 irq_index = inb(io_addr + 0xc88) & 0x07;
205         }
206 
207         if(irq_index >= strlen(eisa_irqs)) {
208                 printk("sim710.c: irq nasty\n");
209                 return -ENODEV;
210         }
211 
212         irq = eisa_irqs[irq_index];
213                 
214         return sim710_probe_common(dev, io_addr, irq, 50,
215                                    differential, scsi_id);
216 }
217 
218 static struct eisa_driver sim710_eisa_driver = {
219         .id_table               = sim710_eisa_ids,
220         .driver = {
221                 .name           = "sim710",
222                 .probe          = sim710_eisa_probe,
223                 .remove         = sim710_device_remove,
224         },
225 };
226 #endif /* CONFIG_EISA */
227 
228 static int __init sim710_init(void)
229 {
230         int err = -ENODEV;
231 
232 #ifdef MODULE
233         if (sim710)
234                 param_setup(sim710);
235 #endif
236 
237 #ifdef CONFIG_EISA
238         err = eisa_driver_register(&sim710_eisa_driver);
239 #endif
240         /* FIXME: what we'd really like to return here is -ENODEV if
241          * no devices have actually been found.  Instead, the err
242          * above actually only reports problems with kobject_register,
243          * so for the moment return success */
244 
245         return 0;
246 }
247 
248 static void __exit sim710_exit(void)
249 {
250 #ifdef CONFIG_EISA
251         eisa_driver_unregister(&sim710_eisa_driver);
252 #endif
253 }
254 
255 module_init(sim710_init);
256 module_exit(sim710_exit);
257 

This page was automatically generated by LXR 0.3.1 (source).  •  Linux is a registered trademark of Linus Torvalds  •  Contact us