FreeBSD/Linux Kernel Cross Reference
sys/dev/iir/iir_ctrl.c
1 /*-
2 * Copyright (c) 2000-03 ICP vortex GmbH
3 * Copyright (c) 2002-03 Intel Corporation
4 * Copyright (c) 2003 Adaptec Inc.
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@adaptec.com>
36 * Fixes/Additions: Boji Tony Kannanthanam <boji.t.kannanthanam@intel.com>
37 *
38 * $Id: iir_ctrl.c 1.3 2003/08/26 12:31:15 achim Exp $"
39 */
40
41 #include <sys/cdefs.h>
42 __FBSDID("$FreeBSD: releng/11.2/sys/dev/iir/iir_ctrl.c 331722 2018-03-29 02:50:57Z eadler $");
43
44 #include <sys/param.h>
45 #include <sys/systm.h>
46 #include <sys/bus.h>
47 #include <sys/endian.h>
48 #include <sys/malloc.h>
49 #include <sys/kernel.h>
50 #include <sys/uio.h>
51 #include <sys/conf.h>
52 #include <sys/disk.h>
53 #include <sys/stat.h>
54 #include <sys/disklabel.h>
55 #include <sys/sysctl.h>
56 #include <sys/sx.h>
57 #include <machine/bus.h>
58
59 #include <dev/iir/iir.h>
60
61 /* Entry points and other prototypes */
62 static struct gdt_softc *gdt_minor2softc(struct cdev *dev, int minor_no);
63
64 static d_open_t iir_open;
65 static d_close_t iir_close;
66 static d_write_t iir_write;
67 static d_read_t iir_read;
68 static d_ioctl_t iir_ioctl;
69
70 /* Normally, this is a static structure. But we need it in pci/iir_pci.c */
71 static struct cdevsw iir_cdevsw = {
72 .d_version = D_VERSION,
73 .d_open = iir_open,
74 .d_close = iir_close,
75 .d_read = iir_read,
76 .d_write = iir_write,
77 .d_ioctl = iir_ioctl,
78 .d_name = "iir",
79 };
80
81 #ifndef SDEV_PER_HBA
82 static int sdev_made = 0;
83 static struct sx sdev_lock;
84 SX_SYSINIT(iir_sdev_lock, &sdev_lock, "iir sdev");
85 #endif
86 extern int gdt_cnt;
87 extern gdt_statist_t gdt_stat;
88
89 /*
90 * Given a controller number,
91 * make a special device and return the dev_t
92 */
93 struct cdev *
94 gdt_make_dev(struct gdt_softc *gdt)
95 {
96 struct cdev *dev;
97
98 #ifdef SDEV_PER_HBA
99 dev = make_dev(&iir_cdevsw, 0, UID_ROOT, GID_OPERATOR,
100 S_IRUSR | S_IWUSR, "iir%d", unit);
101 dev->si_drv1 = gdt;
102 #else
103 sx_xlock(&sdev_lock);
104 if (sdev_made)
105 return (NULL);
106 dev = make_dev(&iir_cdevsw, 0, UID_ROOT, GID_OPERATOR,
107 S_IRUSR | S_IWUSR, "iir");
108 sdev_made = 1;
109 sx_xunlock(&sdev_lock);
110 #endif
111 return (dev);
112 }
113
114 void
115 gdt_destroy_dev(struct cdev *dev)
116 {
117 if (dev != NULL)
118 destroy_dev(dev);
119 }
120
121 /*
122 * Given a minor device number,
123 * return the pointer to its softc structure
124 */
125 static struct gdt_softc *
126 gdt_minor2softc(struct cdev *dev, int minor_no)
127 {
128 #ifdef SDEV_PER_HBA
129
130 return (dev->si_drv1);
131 #else
132 devclass_t dc;
133 device_t child;
134
135 dc = devclass_find("iir");
136 if (dc == NULL)
137 return (NULL);
138 child = devclass_get_device(dc, minor_no);
139 if (child == NULL)
140 return (NULL);
141 return (device_get_softc(child));
142 #endif
143 }
144
145 static int
146 iir_open(struct cdev *dev, int flags, int fmt, struct thread * p)
147 {
148 GDT_DPRINTF(GDT_D_DEBUG, ("iir_open()\n"));
149
150 return (0);
151 }
152
153 static int
154 iir_close(struct cdev *dev, int flags, int fmt, struct thread * p)
155 {
156 GDT_DPRINTF(GDT_D_DEBUG, ("iir_close()\n"));
157
158 return (0);
159 }
160
161 static int
162 iir_write(struct cdev *dev, struct uio * uio, int ioflag)
163 {
164 GDT_DPRINTF(GDT_D_DEBUG, ("iir_write()\n"));
165
166 return (0);
167 }
168
169 static int
170 iir_read(struct cdev *dev, struct uio * uio, int ioflag)
171 {
172 GDT_DPRINTF(GDT_D_DEBUG, ("iir_read()\n"));
173
174 return (0);
175 }
176
177 /**
178 * This is the control syscall interface.
179 * It should be binary compatible with UnixWare,
180 * if not totally syntatically so.
181 */
182
183 static int
184 iir_ioctl(struct cdev *dev, u_long cmd, caddr_t cmdarg, int flags, struct thread * p)
185 {
186 GDT_DPRINTF(GDT_D_DEBUG, ("iir_ioctl() cmd 0x%lx\n",cmd));
187
188 ++gdt_stat.io_count_act;
189 if (gdt_stat.io_count_act > gdt_stat.io_count_max)
190 gdt_stat.io_count_max = gdt_stat.io_count_act;
191
192 switch (cmd) {
193 case GDT_IOCTL_GENERAL:
194 {
195 gdt_ucmd_t *ucmd;
196 struct gdt_softc *gdt;
197
198 ucmd = (gdt_ucmd_t *)cmdarg;
199 gdt = gdt_minor2softc(dev, ucmd->io_node);
200 if (gdt == NULL)
201 return (ENXIO);
202 mtx_lock(&gdt->sc_lock);
203 TAILQ_INSERT_TAIL(&gdt->sc_ucmd_queue, ucmd, links);
204 ucmd->complete_flag = FALSE;
205 gdt_next(gdt);
206 if (!ucmd->complete_flag)
207 (void) mtx_sleep(ucmd, &gdt->sc_lock, PCATCH | PRIBIO, "iirucw",
208 0);
209 mtx_unlock(&gdt->sc_lock);
210 break;
211 }
212
213 case GDT_IOCTL_DRVERS:
214 case GDT_IOCTL_DRVERS_OLD:
215 *(int *)cmdarg =
216 (IIR_DRIVER_VERSION << 8) | IIR_DRIVER_SUBVERSION;
217 break;
218
219 case GDT_IOCTL_CTRTYPE:
220 case GDT_IOCTL_CTRTYPE_OLD:
221 {
222 gdt_ctrt_t *p;
223 struct gdt_softc *gdt;
224
225 p = (gdt_ctrt_t *)cmdarg;
226 gdt = gdt_minor2softc(dev, p->io_node);
227 if (gdt == NULL)
228 return (ENXIO);
229 /* only RP controllers */
230 p->ext_type = 0x6000 | gdt->sc_device;
231 if (gdt->sc_vendor == INTEL_VENDOR_ID_IIR) {
232 p->oem_id = OEM_ID_INTEL;
233 p->type = 0xfd;
234 /* new -> subdevice into ext_type */
235 if (gdt->sc_device >= 0x600)
236 p->ext_type = 0x6000 | gdt->sc_subdevice;
237 } else {
238 p->oem_id = OEM_ID_ICP;
239 p->type = 0xfe;
240 /* new -> subdevice into ext_type */
241 if (gdt->sc_device >= 0x300)
242 p->ext_type = 0x6000 | gdt->sc_subdevice;
243 }
244 p->info = (gdt->sc_bus << 8) | (gdt->sc_slot << 3);
245 p->device_id = gdt->sc_device;
246 p->sub_device_id = gdt->sc_subdevice;
247 break;
248 }
249
250 case GDT_IOCTL_OSVERS:
251 {
252 gdt_osv_t *p;
253
254 p = (gdt_osv_t *)cmdarg;
255 p->oscode = 10;
256 p->version = osreldate / 100000;
257 p->subversion = osreldate / 1000 % 100;
258 p->revision = 0;
259 strcpy(p->name, ostype);
260 break;
261 }
262
263 case GDT_IOCTL_CTRCNT:
264 *(int *)cmdarg = gdt_cnt;
265 break;
266
267 case GDT_IOCTL_EVENT:
268 {
269 gdt_event_t *p;
270
271 p = (gdt_event_t *)cmdarg;
272 if (p->erase == 0xff) {
273 if (p->dvr.event_source == GDT_ES_TEST)
274 p->dvr.event_data.size = sizeof(p->dvr.event_data.eu.test);
275 else if (p->dvr.event_source == GDT_ES_DRIVER)
276 p->dvr.event_data.size= sizeof(p->dvr.event_data.eu.driver);
277 else if (p->dvr.event_source == GDT_ES_SYNC)
278 p->dvr.event_data.size = sizeof(p->dvr.event_data.eu.sync);
279 else
280 p->dvr.event_data.size = sizeof(p->dvr.event_data.eu.async);
281 gdt_store_event(p->dvr.event_source, p->dvr.event_idx,
282 &p->dvr.event_data);
283 } else if (p->erase == 0xfe) {
284 gdt_clear_events();
285 } else if (p->erase == 0) {
286 p->handle = gdt_read_event(p->handle, &p->dvr);
287 } else {
288 gdt_readapp_event((u_int8_t)p->erase, &p->dvr);
289 }
290 break;
291 }
292
293 case GDT_IOCTL_STATIST:
294 {
295 gdt_statist_t *p;
296
297 p = (gdt_statist_t *)cmdarg;
298 bcopy(&gdt_stat, p, sizeof(gdt_statist_t));
299 break;
300 }
301
302 default:
303 break;
304 }
305
306 --gdt_stat.io_count_act;
307 return (0);
308 }
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