Linux kernel & device driver programming

Cross-Referenced Linux and Device Driver Code

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Version: [ 2.6.11.8 ] [ 2.6.25 ] [ 2.6.25.8 ] [ 2.6.31.13 ] Architecture: [ i386 ]
  1 /*======================================================================
  2 
  3     A driver for the Qlogic SCSI card
  4 
  5     qlogic_cs.c 1.79 2000/06/12 21:27:26
  6 
  7     The contents of this file are subject to the Mozilla Public
  8     License Version 1.1 (the "License"); you may not use this file
  9     except in compliance with the License. You may obtain a copy of
 10     the License at http://www.mozilla.org/MPL/
 11 
 12     Software distributed under the License is distributed on an "AS
 13     IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
 14     implied. See the License for the specific language governing
 15     rights and limitations under the License.
 16 
 17     The initial developer of the original code is David A. Hinds
 18     <dahinds@users.sourceforge.net>.  Portions created by David A. Hinds
 19     are Copyright (C) 1999 David A. Hinds.  All Rights Reserved.
 20 
 21     Alternatively, the contents of this file may be used under the
 22     terms of the GNU General Public License version 2 (the "GPL"), in which
 23     case the provisions of the GPL are applicable instead of the
 24     above.  If you wish to allow the use of your version of this file
 25     only under the terms of the GPL and not to allow others to use
 26     your version of this file under the MPL, indicate your decision
 27     by deleting the provisions above and replace them with the notice
 28     and other provisions required by the GPL.  If you do not delete
 29     the provisions above, a recipient may use your version of this
 30     file under either the MPL or the GPL.
 31     
 32 ======================================================================*/
 33 
 34 #include <linux/module.h>
 35 #include <linux/init.h>
 36 #include <linux/kernel.h>
 37 #include <linux/slab.h>
 38 #include <linux/string.h>
 39 #include <linux/ioport.h>
 40 #include <asm/io.h>
 41 #include <scsi/scsi.h>
 42 #include <linux/major.h>
 43 #include <linux/blkdev.h>
 44 #include <scsi/scsi_ioctl.h>
 45 #include <linux/interrupt.h>
 46 
 47 #include "scsi.h"
 48 #include <scsi/scsi_host.h>
 49 #include "../qlogicfas408.h"
 50 
 51 #include <pcmcia/cs_types.h>
 52 #include <pcmcia/cs.h>
 53 #include <pcmcia/cistpl.h>
 54 #include <pcmcia/ds.h>
 55 #include <pcmcia/ciscode.h>
 56 
 57 /* Set the following to 2 to use normal interrupt (active high/totempole-
 58  * tristate), otherwise use 0 (REQUIRED FOR PCMCIA) for active low, open
 59  * drain
 60  */
 61 #define INT_TYPE        0
 62 
 63 static char qlogic_name[] = "qlogic_cs";
 64 
 65 #ifdef PCMCIA_DEBUG
 66 static int pc_debug = PCMCIA_DEBUG;
 67 module_param(pc_debug, int, 0644);
 68 #define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args)
 69 static char *version = "qlogic_cs.c 1.79-ac 2002/10/26 (David Hinds)";
 70 #else
 71 #define DEBUG(n, args...)
 72 #endif
 73 
 74 static struct scsi_host_template qlogicfas_driver_template = {
 75         .module                 = THIS_MODULE,
 76         .name                   = qlogic_name,
 77         .proc_name              = qlogic_name,
 78         .info                   = qlogicfas408_info,
 79         .queuecommand           = qlogicfas408_queuecommand,
 80         .eh_abort_handler       = qlogicfas408_abort,
 81         .eh_bus_reset_handler   = qlogicfas408_bus_reset,
 82         .bios_param             = qlogicfas408_biosparam,
 83         .can_queue              = 1,
 84         .this_id                = -1,
 85         .sg_tablesize           = SG_ALL,
 86         .cmd_per_lun            = 1,
 87         .use_clustering         = DISABLE_CLUSTERING,
 88 };
 89 
 90 /*====================================================================*/
 91 
 92 typedef struct scsi_info_t {
 93         struct pcmcia_device    *p_dev;
 94         dev_node_t node;
 95         struct Scsi_Host *host;
 96         unsigned short manf_id;
 97 } scsi_info_t;
 98 
 99 static void qlogic_release(struct pcmcia_device *link);
100 static void qlogic_detach(struct pcmcia_device *p_dev);
101 static int qlogic_config(struct pcmcia_device * link);
102 
103 static struct Scsi_Host *qlogic_detect(struct scsi_host_template *host,
104                                 struct pcmcia_device *link, int qbase, int qlirq)
105 {
106         int qltyp;              /* type of chip */
107         int qinitid;
108         struct Scsi_Host *shost;        /* registered host structure */
109         struct qlogicfas408_priv *priv;
110 
111         qltyp = qlogicfas408_get_chip_type(qbase, INT_TYPE);
112         qinitid = host->this_id;
113         if (qinitid < 0)
114                 qinitid = 7;    /* if no ID, use 7 */
115 
116         qlogicfas408_setup(qbase, qinitid, INT_TYPE);
117 
118         host->name = qlogic_name;
119         shost = scsi_host_alloc(host, sizeof(struct qlogicfas408_priv));
120         if (!shost)
121                 goto err;
122         shost->io_port = qbase;
123         shost->n_io_port = 16;
124         shost->dma_channel = -1;
125         if (qlirq != -1)
126                 shost->irq = qlirq;
127 
128         priv = get_priv_by_host(shost);
129         priv->qlirq = qlirq;
130         priv->qbase = qbase;
131         priv->qinitid = qinitid;
132         priv->shost = shost;
133         priv->int_type = INT_TYPE;                                      
134 
135         if (request_irq(qlirq, qlogicfas408_ihandl, 0, qlogic_name, shost))
136                 goto free_scsi_host;
137 
138         sprintf(priv->qinfo,
139                 "Qlogicfas Driver version 0.46, chip %02X at %03X, IRQ %d, TPdma:%d",
140                 qltyp, qbase, qlirq, QL_TURBO_PDMA);
141 
142         if (scsi_add_host(shost, NULL))
143                 goto free_interrupt;
144 
145         scsi_scan_host(shost);
146 
147         return shost;
148 
149 free_interrupt:
150         free_irq(qlirq, shost);
151 
152 free_scsi_host:
153         scsi_host_put(shost);
154         
155 err:
156         return NULL;
157 }
158 static int qlogic_probe(struct pcmcia_device *link)
159 {
160         scsi_info_t *info;
161 
162         DEBUG(0, "qlogic_attach()\n");
163 
164         /* Create new SCSI device */
165         info = kzalloc(sizeof(*info), GFP_KERNEL);
166         if (!info)
167                 return -ENOMEM;
168         info->p_dev = link;
169         link->priv = info;
170         link->io.NumPorts1 = 16;
171         link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
172         link->io.IOAddrLines = 10;
173         link->irq.Attributes = IRQ_TYPE_EXCLUSIVE;
174         link->irq.IRQInfo1 = IRQ_LEVEL_ID;
175         link->conf.Attributes = CONF_ENABLE_IRQ;
176         link->conf.IntType = INT_MEMORY_AND_IO;
177         link->conf.Present = PRESENT_OPTION;
178 
179         return qlogic_config(link);
180 }                               /* qlogic_attach */
181 
182 /*====================================================================*/
183 
184 static void qlogic_detach(struct pcmcia_device *link)
185 {
186         DEBUG(0, "qlogic_detach(0x%p)\n", link);
187 
188         qlogic_release(link);
189         kfree(link->priv);
190 
191 }                               /* qlogic_detach */
192 
193 /*====================================================================*/
194 
195 #define CS_CHECK(fn, ret) \
196 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
197 
198 static int qlogic_config_check(struct pcmcia_device *p_dev,
199                                cistpl_cftable_entry_t *cfg,
200                                cistpl_cftable_entry_t *dflt,
201                                unsigned int vcc,
202                                void *priv_data)
203 {
204         p_dev->io.BasePort1 = cfg->io.win[0].base;
205         p_dev->io.NumPorts1 = cfg->io.win[0].len;
206 
207         if (p_dev->io.BasePort1 == 0)
208                 return -ENODEV;
209 
210         return pcmcia_request_io(p_dev, &p_dev->io);
211 }
212 
213 static int qlogic_config(struct pcmcia_device * link)
214 {
215         scsi_info_t *info = link->priv;
216         int last_ret, last_fn;
217         struct Scsi_Host *host;
218 
219         DEBUG(0, "qlogic_config(0x%p)\n", link);
220 
221         last_ret = pcmcia_loop_config(link, qlogic_config_check, NULL);
222         if (last_ret) {
223                 cs_error(link, RequestIO, last_ret);
224                 goto failed;
225         }
226 
227         CS_CHECK(RequestIRQ, pcmcia_request_irq(link, &link->irq));
228         CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link, &link->conf));
229 
230         if ((info->manf_id == MANFID_MACNICA) || (info->manf_id == MANFID_PIONEER) || (info->manf_id == 0x0098)) {
231                 /* set ATAcmd */
232                 outb(0xb4, link->io.BasePort1 + 0xd);
233                 outb(0x24, link->io.BasePort1 + 0x9);
234                 outb(0x04, link->io.BasePort1 + 0xd);
235         }
236 
237         /* The KXL-810AN has a bigger IO port window */
238         if (link->io.NumPorts1 == 32)
239                 host = qlogic_detect(&qlogicfas_driver_template, link,
240                         link->io.BasePort1 + 16, link->irq.AssignedIRQ);
241         else
242                 host = qlogic_detect(&qlogicfas_driver_template, link,
243                         link->io.BasePort1, link->irq.AssignedIRQ);
244         
245         if (!host) {
246                 printk(KERN_INFO "%s: no SCSI devices found\n", qlogic_name);
247                 goto cs_failed;
248         }
249 
250         sprintf(info->node.dev_name, "scsi%d", host->host_no);
251         link->dev_node = &info->node;
252         info->host = host;
253 
254         return 0;
255 
256 cs_failed:
257         cs_error(link, last_fn, last_ret);
258         pcmcia_disable_device(link);
259 failed:
260         return -ENODEV;
261 
262 }                               /* qlogic_config */
263 
264 /*====================================================================*/
265 
266 static void qlogic_release(struct pcmcia_device *link)
267 {
268         scsi_info_t *info = link->priv;
269 
270         DEBUG(0, "qlogic_release(0x%p)\n", link);
271 
272         scsi_remove_host(info->host);
273 
274         free_irq(link->irq.AssignedIRQ, info->host);
275         pcmcia_disable_device(link);
276 
277         scsi_host_put(info->host);
278 }
279 
280 /*====================================================================*/
281 
282 static int qlogic_resume(struct pcmcia_device *link)
283 {
284         scsi_info_t *info = link->priv;
285 
286         pcmcia_request_configuration(link, &link->conf);
287         if ((info->manf_id == MANFID_MACNICA) ||
288             (info->manf_id == MANFID_PIONEER) ||
289             (info->manf_id == 0x0098)) {
290                 outb(0x80, link->io.BasePort1 + 0xd);
291                 outb(0x24, link->io.BasePort1 + 0x9);
292                 outb(0x04, link->io.BasePort1 + 0xd);
293         }
294         /* Ugggglllyyyy!!! */
295         qlogicfas408_bus_reset(NULL);
296 
297         return 0;
298 }
299 
300 static struct pcmcia_device_id qlogic_ids[] = {
301         PCMCIA_DEVICE_PROD_ID12("EIger Labs", "PCMCIA-to-SCSI Adapter", 0x88395fa7, 0x33b7a5e6),
302         PCMCIA_DEVICE_PROD_ID12("EPSON", "SCSI-2 PC Card SC200", 0xd361772f, 0x299d1751),
303         PCMCIA_DEVICE_PROD_ID12("MACNICA", "MIRACLE SCSI-II mPS110", 0x20841b68, 0xab3c3b6d),
304         PCMCIA_DEVICE_PROD_ID12("MIDORI ELECTRONICS ", "CN-SC43", 0x6534382a, 0xd67eee79),
305         PCMCIA_DEVICE_PROD_ID12("NEC", "PC-9801N-J03R", 0x18df0ba0, 0x24662e8a),
306         PCMCIA_DEVICE_PROD_ID12("KME ", "KXLC003", 0x82375a27, 0xf68e5bf7),
307         PCMCIA_DEVICE_PROD_ID12("KME ", "KXLC004", 0x82375a27, 0x68eace54),
308         PCMCIA_DEVICE_PROD_ID12("KME", "KXLC101", 0x3faee676, 0x194250ec),
309         PCMCIA_DEVICE_PROD_ID12("QLOGIC CORPORATION", "pc05", 0xd77b2930, 0xa85b2735),
310         PCMCIA_DEVICE_PROD_ID12("QLOGIC CORPORATION", "pc05 rev 1.10", 0xd77b2930, 0x70f8b5f8),
311         PCMCIA_DEVICE_PROD_ID123("KME", "KXLC002", "00", 0x3faee676, 0x81896b61, 0xf99f065f),
312         PCMCIA_DEVICE_PROD_ID12("RATOC System Inc.", "SCSI2 CARD 37", 0x85c10e17, 0x1a2640c1),
313         PCMCIA_DEVICE_PROD_ID12("TOSHIBA", "SCSC200A PC CARD SCSI", 0xb4585a1a, 0xa6f06ebe),
314         PCMCIA_DEVICE_PROD_ID12("TOSHIBA", "SCSC200B PC CARD SCSI-10", 0xb4585a1a, 0x0a88dea0),
315         /* these conflict with other cards! */
316         /* PCMCIA_DEVICE_PROD_ID123("MACNICA", "MIRACLE SCSI", "mPS100", 0x20841b68, 0xf8dedaeb, 0x89f7fafb), */
317         /* PCMCIA_DEVICE_PROD_ID123("MACNICA", "MIRACLE SCSI", "mPS100", 0x20841b68, 0xf8dedaeb, 0x89f7fafb), */
318         PCMCIA_DEVICE_NULL,
319 };
320 MODULE_DEVICE_TABLE(pcmcia, qlogic_ids);
321 
322 static struct pcmcia_driver qlogic_cs_driver = {
323         .owner          = THIS_MODULE,
324         .drv            = {
325         .name           = "qlogic_cs",
326         },
327         .probe          = qlogic_probe,
328         .remove         = qlogic_detach,
329         .id_table       = qlogic_ids,
330         .resume         = qlogic_resume,
331 };
332 
333 static int __init init_qlogic_cs(void)
334 {
335         return pcmcia_register_driver(&qlogic_cs_driver);
336 }
337 
338 static void __exit exit_qlogic_cs(void)
339 {
340         pcmcia_unregister_driver(&qlogic_cs_driver);
341 }
342 
343 MODULE_AUTHOR("Tom Zerucha, Michael Griffith");
344 MODULE_DESCRIPTION("Driver for the PCMCIA Qlogic FAS SCSI controllers");
345 MODULE_LICENSE("GPL");
346 module_init(init_qlogic_cs);
347 module_exit(exit_qlogic_cs);
348 
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