FreeBSD/Linux Kernel Cross Reference
sys/dev/iir/iir_ctrl.c
1 /*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 2000-03 ICP vortex GmbH
5 * Copyright (c) 2002-03 Intel Corporation
6 * Copyright (c) 2003 Adaptec Inc.
7 * All Rights Reserved
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions, and the following disclaimer,
14 * without modification, immediately at the beginning of the file.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. The name of the author may not be used to endorse or promote products
19 * derived from this software without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
25 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34 /*
35 * iir_ctrl.c: Control functions and /dev entry points for /dev/iir*
36 *
37 * Written by: Achim Leubner <achim_leubner@adaptec.com>
38 * Fixes/Additions: Boji Tony Kannanthanam <boji.t.kannanthanam@intel.com>
39 *
40 * $Id: iir_ctrl.c 1.3 2003/08/26 12:31:15 achim Exp $"
41 */
42
43 #include <sys/cdefs.h>
44 __FBSDID("$FreeBSD: releng/12.0/sys/dev/iir/iir_ctrl.c 326255 2017-11-27 14:52:40Z pfg $");
45
46 #include <sys/param.h>
47 #include <sys/systm.h>
48 #include <sys/bus.h>
49 #include <sys/endian.h>
50 #include <sys/malloc.h>
51 #include <sys/kernel.h>
52 #include <sys/uio.h>
53 #include <sys/conf.h>
54 #include <sys/disk.h>
55 #include <sys/stat.h>
56 #include <sys/disklabel.h>
57 #include <sys/sysctl.h>
58 #include <sys/sx.h>
59 #include <machine/bus.h>
60
61 #include <dev/iir/iir.h>
62
63 /* Entry points and other prototypes */
64 static struct gdt_softc *gdt_minor2softc(struct cdev *dev, int minor_no);
65
66 static d_open_t iir_open;
67 static d_close_t iir_close;
68 static d_write_t iir_write;
69 static d_read_t iir_read;
70 static d_ioctl_t iir_ioctl;
71
72 /* Normally, this is a static structure. But we need it in pci/iir_pci.c */
73 static struct cdevsw iir_cdevsw = {
74 .d_version = D_VERSION,
75 .d_open = iir_open,
76 .d_close = iir_close,
77 .d_read = iir_read,
78 .d_write = iir_write,
79 .d_ioctl = iir_ioctl,
80 .d_name = "iir",
81 };
82
83 #ifndef SDEV_PER_HBA
84 static int sdev_made = 0;
85 static struct sx sdev_lock;
86 SX_SYSINIT(iir_sdev_lock, &sdev_lock, "iir sdev");
87 #endif
88 extern int gdt_cnt;
89 extern gdt_statist_t gdt_stat;
90
91 /*
92 * Given a controller number,
93 * make a special device and return the dev_t
94 */
95 struct cdev *
96 gdt_make_dev(struct gdt_softc *gdt)
97 {
98 struct cdev *dev;
99
100 #ifdef SDEV_PER_HBA
101 dev = make_dev(&iir_cdevsw, 0, UID_ROOT, GID_OPERATOR,
102 S_IRUSR | S_IWUSR, "iir%d", unit);
103 dev->si_drv1 = gdt;
104 #else
105 sx_xlock(&sdev_lock);
106 if (sdev_made)
107 return (NULL);
108 dev = make_dev(&iir_cdevsw, 0, UID_ROOT, GID_OPERATOR,
109 S_IRUSR | S_IWUSR, "iir");
110 sdev_made = 1;
111 sx_xunlock(&sdev_lock);
112 #endif
113 return (dev);
114 }
115
116 void
117 gdt_destroy_dev(struct cdev *dev)
118 {
119 if (dev != NULL)
120 destroy_dev(dev);
121 }
122
123 /*
124 * Given a minor device number,
125 * return the pointer to its softc structure
126 */
127 static struct gdt_softc *
128 gdt_minor2softc(struct cdev *dev, int minor_no)
129 {
130 #ifdef SDEV_PER_HBA
131
132 return (dev->si_drv1);
133 #else
134 devclass_t dc;
135 device_t child;
136
137 dc = devclass_find("iir");
138 if (dc == NULL)
139 return (NULL);
140 child = devclass_get_device(dc, minor_no);
141 if (child == NULL)
142 return (NULL);
143 return (device_get_softc(child));
144 #endif
145 }
146
147 static int
148 iir_open(struct cdev *dev, int flags, int fmt, struct thread * p)
149 {
150 GDT_DPRINTF(GDT_D_DEBUG, ("iir_open()\n"));
151
152 return (0);
153 }
154
155 static int
156 iir_close(struct cdev *dev, int flags, int fmt, struct thread * p)
157 {
158 GDT_DPRINTF(GDT_D_DEBUG, ("iir_close()\n"));
159
160 return (0);
161 }
162
163 static int
164 iir_write(struct cdev *dev, struct uio * uio, int ioflag)
165 {
166 GDT_DPRINTF(GDT_D_DEBUG, ("iir_write()\n"));
167
168 return (0);
169 }
170
171 static int
172 iir_read(struct cdev *dev, struct uio * uio, int ioflag)
173 {
174 GDT_DPRINTF(GDT_D_DEBUG, ("iir_read()\n"));
175
176 return (0);
177 }
178
179 /**
180 * This is the control syscall interface.
181 * It should be binary compatible with UnixWare,
182 * if not totally syntatically so.
183 */
184
185 static int
186 iir_ioctl(struct cdev *dev, u_long cmd, caddr_t cmdarg, int flags, struct thread * p)
187 {
188 GDT_DPRINTF(GDT_D_DEBUG, ("iir_ioctl() cmd 0x%lx\n",cmd));
189
190 ++gdt_stat.io_count_act;
191 if (gdt_stat.io_count_act > gdt_stat.io_count_max)
192 gdt_stat.io_count_max = gdt_stat.io_count_act;
193
194 switch (cmd) {
195 case GDT_IOCTL_GENERAL:
196 {
197 gdt_ucmd_t *ucmd;
198 struct gdt_softc *gdt;
199
200 ucmd = (gdt_ucmd_t *)cmdarg;
201 gdt = gdt_minor2softc(dev, ucmd->io_node);
202 if (gdt == NULL)
203 return (ENXIO);
204 mtx_lock(&gdt->sc_lock);
205 TAILQ_INSERT_TAIL(&gdt->sc_ucmd_queue, ucmd, links);
206 ucmd->complete_flag = FALSE;
207 gdt_next(gdt);
208 if (!ucmd->complete_flag)
209 (void) mtx_sleep(ucmd, &gdt->sc_lock, PCATCH | PRIBIO, "iirucw",
210 0);
211 mtx_unlock(&gdt->sc_lock);
212 break;
213 }
214
215 case GDT_IOCTL_DRVERS:
216 case GDT_IOCTL_DRVERS_OLD:
217 *(int *)cmdarg =
218 (IIR_DRIVER_VERSION << 8) | IIR_DRIVER_SUBVERSION;
219 break;
220
221 case GDT_IOCTL_CTRTYPE:
222 case GDT_IOCTL_CTRTYPE_OLD:
223 {
224 gdt_ctrt_t *p;
225 struct gdt_softc *gdt;
226
227 p = (gdt_ctrt_t *)cmdarg;
228 gdt = gdt_minor2softc(dev, p->io_node);
229 if (gdt == NULL)
230 return (ENXIO);
231 /* only RP controllers */
232 p->ext_type = 0x6000 | gdt->sc_device;
233 if (gdt->sc_vendor == INTEL_VENDOR_ID_IIR) {
234 p->oem_id = OEM_ID_INTEL;
235 p->type = 0xfd;
236 /* new -> subdevice into ext_type */
237 if (gdt->sc_device >= 0x600)
238 p->ext_type = 0x6000 | gdt->sc_subdevice;
239 } else {
240 p->oem_id = OEM_ID_ICP;
241 p->type = 0xfe;
242 /* new -> subdevice into ext_type */
243 if (gdt->sc_device >= 0x300)
244 p->ext_type = 0x6000 | gdt->sc_subdevice;
245 }
246 p->info = (gdt->sc_bus << 8) | (gdt->sc_slot << 3);
247 p->device_id = gdt->sc_device;
248 p->sub_device_id = gdt->sc_subdevice;
249 break;
250 }
251
252 case GDT_IOCTL_OSVERS:
253 {
254 gdt_osv_t *p;
255
256 p = (gdt_osv_t *)cmdarg;
257 p->oscode = 10;
258 p->version = osreldate / 100000;
259 p->subversion = osreldate / 1000 % 100;
260 p->revision = 0;
261 strcpy(p->name, ostype);
262 break;
263 }
264
265 case GDT_IOCTL_CTRCNT:
266 *(int *)cmdarg = gdt_cnt;
267 break;
268
269 case GDT_IOCTL_EVENT:
270 {
271 gdt_event_t *p;
272
273 p = (gdt_event_t *)cmdarg;
274 if (p->erase == 0xff) {
275 if (p->dvr.event_source == GDT_ES_TEST)
276 p->dvr.event_data.size = sizeof(p->dvr.event_data.eu.test);
277 else if (p->dvr.event_source == GDT_ES_DRIVER)
278 p->dvr.event_data.size= sizeof(p->dvr.event_data.eu.driver);
279 else if (p->dvr.event_source == GDT_ES_SYNC)
280 p->dvr.event_data.size = sizeof(p->dvr.event_data.eu.sync);
281 else
282 p->dvr.event_data.size = sizeof(p->dvr.event_data.eu.async);
283 gdt_store_event(p->dvr.event_source, p->dvr.event_idx,
284 &p->dvr.event_data);
285 } else if (p->erase == 0xfe) {
286 gdt_clear_events();
287 } else if (p->erase == 0) {
288 p->handle = gdt_read_event(p->handle, &p->dvr);
289 } else {
290 gdt_readapp_event((u_int8_t)p->erase, &p->dvr);
291 }
292 break;
293 }
294
295 case GDT_IOCTL_STATIST:
296 {
297 gdt_statist_t *p;
298
299 p = (gdt_statist_t *)cmdarg;
300 bcopy(&gdt_stat, p, sizeof(gdt_statist_t));
301 break;
302 }
303
304 default:
305 break;
306 }
307
308 --gdt_stat.io_count_act;
309 return (0);
310 }
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