Bring in fix from FreeBSD/cperciva:
[dragonfly.git] / sys / dev / raid / iir / iir_ctrl.c
CommitLineData
984263bc 1/* $FreeBSD: src/sys/dev/iir/iir_ctrl.c,v 1.2.2.4 2002/05/05 08:18:12 asmodai Exp $ */
fb3d7cb1 2/* $DragonFly: src/sys/dev/raid/iir/iir_ctrl.c,v 1.8 2005/05/06 11:27:51 corecode Exp $ */
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3/*
4 * Copyright (c) 2000-01 Intel Corporation
5 * All Rights Reserved
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions, and the following disclaimer,
12 * without modification, immediately at the beginning of the file.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. The name of the author may not be used to endorse or promote products
17 * derived from this software without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
23 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32/*
33 * iir_ctrl.c: Control functions and /dev entry points for /dev/iir*
34 *
35 * Written by: Achim Leubner <achim.leubner@intel.com>
36 * Fixes/Additions: Boji Tony Kannanthanam <boji.t.kannanthanam@intel.com>
37 *
38 * TODO:
39 */
40
41#ident "$Id: iir_ctrl.c 1.2 2001/07/18 11:17:22 achim Exp $"
42
43#include <sys/param.h>
44#include <sys/systm.h>
45#include <sys/malloc.h>
46#include <sys/kernel.h>
47#include <sys/uio.h>
48#include <sys/conf.h>
49#include <sys/stat.h>
50#include <sys/disklabel.h>
51#include <machine/bus.h>
52#include <vm/vm.h>
53#include <vm/vm_kern.h>
54#include <vm/vm_extern.h>
55#include <vm/pmap.h>
56
1f2de5d4 57#include "iir.h"
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58
59/* Entry points and other prototypes */
60static struct gdt_softc *gdt_minor2softc(int minor_no);
61
62static d_open_t iir_open;
63static d_close_t iir_close;
64static d_write_t iir_write;
65static d_read_t iir_read;
66static d_ioctl_t iir_ioctl;
67
68#define CDEV_MAJOR IIR_CDEV_MAJOR
69
70/* Normally, this is a static structure. But we need it in pci/iir_pci.c */
71static struct cdevsw iir_cdevsw = {
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72 /* name */ "iir",
73 /* maj */ CDEV_MAJOR,
74 /* flags */ 0,
75 /* port */ NULL,
455fcd7e 76 /* clone */ NULL,
fabb8ceb 77
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78 /* open */ iir_open,
79 /* close */ iir_close,
80 /* read */ iir_read,
81 /* write */ iir_write,
82 /* ioctl */ iir_ioctl,
83 /* poll */ nopoll,
84 /* mmap */ nommap,
85 /* strategy */ nostrategy,
984263bc 86 /* dump */ nodump,
fabb8ceb 87 /* psize */ nopsize
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88};
89
90static int iir_devsw_installed = 0;
91#ifndef SDEV_PER_HBA
92static int sdev_made = 0;
93#endif
94extern int gdt_cnt;
95extern char ostype[];
96extern char osrelease[];
97extern gdt_statist_t gdt_stat;
98
99/*
100 * Given a controller number,
101 * make a special device and return the dev_t
102 */
103dev_t
104gdt_make_dev(int unit)
105{
106 dev_t dev;
107
108#ifdef SDEV_PER_HBA
109 dev = make_dev(&iir_cdevsw, hba2minor(unit), UID_ROOT, GID_OPERATOR,
fb3d7cb1 110 S_IRUSR | S_IWUSR, "iir%d", unit);
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111#else
112 if (sdev_made)
113 return (0);
114 dev = make_dev(&iir_cdevsw, 0, UID_ROOT, GID_OPERATOR,
fb3d7cb1 115 S_IRUSR | S_IWUSR, "iir");
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116 sdev_made = 1;
117#endif
e4c9c0c8 118 reference_dev(dev);
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119 return (dev);
120}
121
122void
123gdt_destroy_dev(dev_t dev)
124{
125 if (dev != NULL)
126 destroy_dev(dev);
127}
128
129/*
130 * Given a minor device number,
131 * return the pointer to its softc structure
132 */
133static struct gdt_softc *
134gdt_minor2softc(int minor_no)
135{
136 struct gdt_softc *gdt;
137 int hanum;
138
139#ifdef SDEV_PER_HBA
140 hanum = minor2hba(minor_no);
141#else
142 hanum = minor_no;
143#endif
144
145 for (gdt = TAILQ_FIRST(&gdt_softcs);
146 gdt != NULL && gdt->sc_hanum != hanum;
147 gdt = TAILQ_NEXT(gdt, links));
148
149 return (gdt);
150}
151
152static int
153iir_open(dev_t dev, int flags, int fmt, d_thread_t * p)
154{
155 GDT_DPRINTF(GDT_D_DEBUG, ("iir_open()\n"));
156
157#ifdef SDEV_PER_HBA
158 int minor_no;
159 struct gdt_softc *gdt;
160
161 minor_no = minor(dev);
162 gdt = gdt_minor2softc(minor_no);
163 if (gdt == NULL)
164 return (ENXIO);
165#endif
166
167 return (0);
168}
169
170static int
171iir_close(dev_t dev, int flags, int fmt, d_thread_t * p)
172{
173 GDT_DPRINTF(GDT_D_DEBUG, ("iir_close()\n"));
174
175#ifdef SDEV_PER_HBA
176 int minor_no;
177 struct gdt_softc *gdt;
178
179 minor_no = minor(dev);
180 gdt = gdt_minor2softc(minor_no);
181 if (gdt == NULL)
182 return (ENXIO);
183#endif
184
185 return (0);
186}
187
188static int
189iir_write(dev_t dev, struct uio * uio, int ioflag)
190{
191 GDT_DPRINTF(GDT_D_DEBUG, ("iir_write()\n"));
192
193#ifdef SDEV_PER_HBA
194 int minor_no;
195 struct gdt_softc *gdt;
196
197 minor_no = minor(dev);
198 gdt = gdt_minor2softc(minor_no);
199 if (gdt == NULL)
200 return (ENXIO);
201#endif
202
203 return (0);
204}
205
206static int
207iir_read(dev_t dev, struct uio * uio, int ioflag)
208{
209 GDT_DPRINTF(GDT_D_DEBUG, ("iir_read()\n"));
210
211#ifdef SDEV_PER_HBA
212 int minor_no;
213 struct gdt_softc *gdt;
214
215 minor_no = minor(dev);
216 gdt = gdt_minor2softc(minor_no);
217 if (gdt == NULL)
218 return (ENXIO);
219#endif
220
221 return (0);
222}
223
224/**
225 * This is the control syscall interface.
226 * It should be binary compatible with UnixWare,
227 * if not totally syntatically so.
228 */
229
230static int
231iir_ioctl(dev_t dev, u_long cmd, caddr_t cmdarg, int flags, d_thread_t * p)
232{
233 GDT_DPRINTF(GDT_D_DEBUG, ("iir_ioctl() cmd 0x%lx\n",cmd));
234
235#ifdef SDEV_PER_HBA
236 int minor_no;
237 struct gdt_softc *gdt;
238
239 minor_no = minor(dev);
240 gdt = gdt_minor2softc(minor_no);
241 if (gdt == NULL)
242 return (ENXIO);
243#endif
244 ++gdt_stat.io_count_act;
245 if (gdt_stat.io_count_act > gdt_stat.io_count_max)
246 gdt_stat.io_count_max = gdt_stat.io_count_act;
247
248 switch (cmd) {
249 case GDT_IOCTL_GENERAL:
250 {
251 gdt_ucmd_t *ucmd;
252 struct gdt_softc *gdt;
253 int lock;
254
255 ucmd = (gdt_ucmd_t *)cmdarg;
256 gdt = gdt_minor2softc(ucmd->io_node);
257 if (gdt == NULL)
258 return (ENXIO);
259 lock = splcam();
260 TAILQ_INSERT_TAIL(&gdt->sc_ucmd_queue, ucmd, links);
261 ucmd->complete_flag = FALSE;
262 splx(lock);
263 gdt_next(gdt);
264 if (!ucmd->complete_flag)
377d4740 265 (void) tsleep((void *)ucmd, PCATCH, "iirucw", 0);
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266 break;
267 }
268
269 case GDT_IOCTL_DRVERS:
270 *(int *)cmdarg =
271 (IIR_DRIVER_VERSION << 8) | IIR_DRIVER_SUBVERSION;
272 break;
273
274 case GDT_IOCTL_CTRTYPE:
275 {
276 gdt_ctrt_t *p;
277 struct gdt_softc *gdt;
278
279 p = (gdt_ctrt_t *)cmdarg;
280 gdt = gdt_minor2softc(p->io_node);
281 if (gdt == NULL)
282 return (ENXIO);
283 p->oem_id = 0x8000;
284 p->type = 0xfd;
285 p->info = (gdt->sc_bus << 8) | (gdt->sc_slot << 3);
286 p->ext_type = 0x6000 | gdt->sc_subdevice;
287 p->device_id = gdt->sc_device;
288 p->sub_device_id = gdt->sc_subdevice;
289 break;
290 }
291
292 case GDT_IOCTL_OSVERS:
293 {
294 gdt_osv_t *p;
295
296 p = (gdt_osv_t *)cmdarg;
297 p->oscode = 10;
298 p->version = osrelease[0] - '0';
299 if (osrelease[1] == '.')
300 p->subversion = osrelease[2] - '0';
301 else
302 p->subversion = 0;
303 if (osrelease[3] == '.')
304 p->revision = osrelease[4] - '0';
305 else
306 p->revision = 0;
307 strcpy(p->name, ostype);
308 break;
309 }
310
311 case GDT_IOCTL_CTRCNT:
312 *(int *)cmdarg = gdt_cnt;
313 break;
314
315 case GDT_IOCTL_EVENT:
316 {
317 gdt_event_t *p;
318 int lock;
319
320 p = (gdt_event_t *)cmdarg;
321 if (p->erase == 0xff) {
322 if (p->dvr.event_source == GDT_ES_TEST)
323 p->dvr.event_data.size = sizeof(p->dvr.event_data.eu.test);
324 else if (p->dvr.event_source == GDT_ES_DRIVER)
325 p->dvr.event_data.size= sizeof(p->dvr.event_data.eu.driver);
326 else if (p->dvr.event_source == GDT_ES_SYNC)
327 p->dvr.event_data.size = sizeof(p->dvr.event_data.eu.sync);
328 else
329 p->dvr.event_data.size = sizeof(p->dvr.event_data.eu.async);
330 lock = splcam();
331 gdt_store_event(p->dvr.event_source, p->dvr.event_idx,
332 &p->dvr.event_data);
333 splx(lock);
334 } else if (p->erase == 0xfe) {
335 lock = splcam();
336 gdt_clear_events();
337 splx(lock);
338 } else if (p->erase == 0) {
339 p->handle = gdt_read_event(p->handle, &p->dvr);
340 } else {
341 gdt_readapp_event((u_int8_t)p->erase, &p->dvr);
342 }
343 break;
344 }
345
346 case GDT_IOCTL_STATIST:
347 {
348 gdt_statist_t *p;
349
350 p = (gdt_statist_t *)cmdarg;
351 bcopy(&gdt_stat, p, sizeof(gdt_statist_t));
352 break;
353 }
354
355 default:
356 break;
357 }
358
359 --gdt_stat.io_count_act;
360 return (0);
361}
362
363static void
364iir_drvinit(void *unused)
365{
366 GDT_DPRINTF(GDT_D_DEBUG, ("iir_drvinit()\n"));
367
368 if (!iir_devsw_installed) {
369 /* Add the I/O (data) channel */
e4c9c0c8 370 cdevsw_add(&iir_cdevsw, 0, 0);
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371 iir_devsw_installed = 1;
372 }
373}
374
375SYSINIT(iir_dev, SI_SUB_DRIVERS, SI_ORDER_MIDDLE + CDEV_MAJOR, iir_drvinit, NULL)