1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License"). You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22 /*
23 * Copyright 2005 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 #include <sys/debug.h>
28 #include <sys/types.h>
29 #include <sys/param.h>
30 #include <sys/time.h>
31 #include <sys/buf.h>
32 #include <sys/errno.h>
33 #include <sys/systm.h>
34 #include <sys/conf.h>
35 #include <sys/signal.h>
36 #include <sys/file.h>
37 #include <sys/uio.h>
38 #include <sys/ioctl.h>
39 #include <sys/map.h>
40 #include <sys/proc.h>
41 #include <sys/user.h>
42 #include <sys/mman.h>
43 #include <sys/cred.h>
44 #include <sys/open.h>
45 #include <sys/stat.h>
46 #include <sys/utsname.h>
47 #include <sys/kmem.h>
48 #include <sys/cmn_err.h>
49 #include <sys/vnode.h>
50 #include <vm/page.h>
51 #include <vm/as.h>
52 #include <vm/hat.h>
53 #include <vm/seg.h>
54 #include <sys/ddi.h>
55 #include <sys/devops.h>
56 #include <sys/sunddi.h>
57 #include <sys/ddi_impldefs.h>
58 #include <sys/fs/snode.h>
59 #include <sys/pci.h>
60 #include <sys/modctl.h>
61 #include <sys/uio.h>
62 #include <sys/visual_io.h>
63 #include <sys/fbio.h>
64 #include <sys/ddidmareq.h>
65 #include <sys/kstat.h>
66 #include <sys/callb.h>
67 #include <sys/pci_cfgspace.h>
68 #include <sys/gfx_private.h>
69
70 typedef struct gfxp_pci_bsf {
71 uint16_t vendor;
72 uint16_t device;
73 uint8_t bus;
74 uint8_t slot;
75 uint8_t function;
76 uint8_t found;
77 dev_info_t *dip;
78 } gfxp_pci_bsf_t;
79
80 /* The use of pci_get?/put?_func() depends on misc/pci_autoconfig */
81
82 static int
gfxp_pci_get_bsf(dev_info_t * dip,uint8_t * bus,uint8_t * dev,uint8_t * func)83 gfxp_pci_get_bsf(dev_info_t *dip, uint8_t *bus, uint8_t *dev, uint8_t *func)
84 {
85 pci_regspec_t *pci_rp;
86 uint32_t length;
87 int rc;
88
89 /* get "reg" property */
90 rc = ddi_prop_lookup_int_array(DDI_DEV_T_ANY, dip,
91 DDI_PROP_DONTPASS, "reg", (int **)&pci_rp,
92 (uint_t *)&length);
93 if ((rc != DDI_SUCCESS) || (length <
94 (sizeof (pci_regspec_t) / sizeof (int)))) {
95 return (DDI_FAILURE);
96 }
97
98 *bus = PCI_REG_BUS_G(pci_rp->pci_phys_hi);
99 *dev = PCI_REG_DEV_G(pci_rp->pci_phys_hi);
100 *func = PCI_REG_FUNC_G(pci_rp->pci_phys_hi);
101
102 /*
103 * free the memory allocated by ddi_prop_lookup_int_array().
104 */
105 ddi_prop_free(pci_rp);
106
107 return (DDI_SUCCESS);
108 }
109
110 static int
gfxp_pci_find_bsf(dev_info_t * dip,void * arg)111 gfxp_pci_find_bsf(dev_info_t *dip, void *arg)
112 {
113 int rc;
114 uint8_t bus, dev, func;
115 gfxp_pci_bsf_t *pci_bsf;
116 int vendor_id, device_id, class_code;
117
118 /*
119 * Look for vendor-id, device-id, class-code to verify
120 * this is some type of PCI child node.
121 */
122 vendor_id = ddi_prop_get_int(DDI_DEV_T_ANY, dip, DDI_PROP_DONTPASS,
123 "vendor-id", -1);
124 device_id = ddi_prop_get_int(DDI_DEV_T_ANY, dip, DDI_PROP_DONTPASS,
125 "device-id", -1);
126 class_code = ddi_prop_get_int(DDI_DEV_T_ANY, dip, DDI_PROP_DONTPASS,
127 "class-code", -1);
128 if ((vendor_id == -1) || (device_id == -1) || (class_code == -1)) {
129 return (DDI_WALK_CONTINUE);
130 }
131
132 if (gfxp_pci_get_bsf(dip, &bus, &dev, &func) != DDI_SUCCESS)
133 return (DDI_WALK_TERMINATE);
134
135 pci_bsf = (gfxp_pci_bsf_t *)arg;
136
137 if ((bus == pci_bsf->bus) && (dev == pci_bsf->slot) &&
138 (func == pci_bsf->function)) {
139 pci_bsf->dip = dip;
140 pci_bsf->vendor = vendor_id;
141 pci_bsf->device = device_id;
142 pci_bsf->found = 1;
143 rc = DDI_WALK_TERMINATE;
144 } else {
145 rc = DDI_WALK_CONTINUE;
146 }
147
148 return (rc);
149 }
150
151 gfxp_acc_handle_t
gfxp_pci_init_handle(uint8_t bus,uint8_t slot,uint8_t function,uint16_t * vendor,uint16_t * device)152 gfxp_pci_init_handle(uint8_t bus, uint8_t slot, uint8_t function,
153 uint16_t *vendor, uint16_t *device)
154 {
155 dev_info_t *dip;
156 gfxp_pci_bsf_t *pci_bsf;
157
158 /*
159 * Find a PCI device based on its address, and return a unique handle
160 * to be used in subsequent calls to read from or write to the config
161 * space of this device.
162 */
163
164 if ((pci_bsf = kmem_zalloc(sizeof (gfxp_pci_bsf_t), KM_SLEEP))
165 == NULL) {
166 return (NULL);
167 }
168
169 pci_bsf->bus = bus;
170 pci_bsf->slot = slot;
171 pci_bsf->function = function;
172
173 ddi_walk_devs(ddi_root_node(), gfxp_pci_find_bsf, pci_bsf);
174
175 if (pci_bsf->found) {
176 dip = pci_bsf->dip;
177
178 if (vendor) *vendor = pci_bsf->vendor;
179 if (device) *device = pci_bsf->device;
180 } else {
181 dip = NULL;
182 if (vendor) *vendor = 0x0000;
183 if (device) *device = 0x0000;
184 }
185
186 kmem_free(pci_bsf, sizeof (gfxp_pci_bsf_t));
187
188 return ((gfxp_acc_handle_t)dip);
189 }
190
191 uint8_t
gfxp_pci_read_byte(gfxp_acc_handle_t handle,uint16_t offset)192 gfxp_pci_read_byte(gfxp_acc_handle_t handle, uint16_t offset)
193 {
194 dev_info_t *dip = (dev_info_t *)handle;
195 uint8_t val;
196 uint8_t bus, dev, func;
197
198 if (dip == NULL)
199 return ((uint8_t)~0);
200
201 if (gfxp_pci_get_bsf(dip, &bus, &dev, &func) != DDI_SUCCESS)
202 return ((uint8_t)~0);
203
204 val = (*pci_getb_func)(bus, dev, func, offset);
205 return (val);
206 }
207
208 uint16_t
gfxp_pci_read_word(gfxp_acc_handle_t handle,uint16_t offset)209 gfxp_pci_read_word(gfxp_acc_handle_t handle, uint16_t offset)
210 {
211 dev_info_t *dip = (dev_info_t *)handle;
212 uint16_t val;
213 uint8_t bus, dev, func;
214
215 if (dip == NULL)
216 return ((uint16_t)~0);
217
218 if (gfxp_pci_get_bsf(dip, &bus, &dev, &func) != DDI_SUCCESS)
219 return ((uint16_t)~0);
220
221 val = (*pci_getw_func)(bus, dev, func, offset);
222 return (val);
223 }
224
225 uint32_t
gfxp_pci_read_dword(gfxp_acc_handle_t handle,uint16_t offset)226 gfxp_pci_read_dword(gfxp_acc_handle_t handle, uint16_t offset)
227 {
228 dev_info_t *dip = (dev_info_t *)handle;
229 uint32_t val;
230 uint8_t bus, dev, func;
231
232 if (dip == NULL)
233 return ((uint32_t)~0);
234
235 if (gfxp_pci_get_bsf(dip, &bus, &dev, &func) != DDI_SUCCESS)
236 return ((uint32_t)~0);
237
238 val = (*pci_getl_func)(bus, dev, func, offset);
239 return (val);
240 }
241
242 void
gfxp_pci_write_byte(gfxp_acc_handle_t handle,uint16_t offset,uint8_t value)243 gfxp_pci_write_byte(gfxp_acc_handle_t handle, uint16_t offset, uint8_t value)
244 {
245 dev_info_t *dip = (dev_info_t *)handle;
246 uint8_t bus, dev, func;
247
248 if (dip == NULL)
249 return;
250
251 if (gfxp_pci_get_bsf(dip, &bus, &dev, &func) != DDI_SUCCESS)
252 return;
253
254 (*pci_putb_func)(bus, dev, func, offset, value);
255 }
256
257 void
gfxp_pci_write_word(gfxp_acc_handle_t handle,uint16_t offset,uint16_t value)258 gfxp_pci_write_word(gfxp_acc_handle_t handle, uint16_t offset, uint16_t value)
259 {
260 dev_info_t *dip = (dev_info_t *)handle;
261 uint8_t bus, dev, func;
262
263 if (dip == NULL)
264 return;
265
266 if (gfxp_pci_get_bsf(dip, &bus, &dev, &func) != DDI_SUCCESS)
267 return;
268
269 (*pci_putw_func)(bus, dev, func, offset, value);
270 }
271
272 void
gfxp_pci_write_dword(gfxp_acc_handle_t handle,uint16_t offset,uint32_t value)273 gfxp_pci_write_dword(gfxp_acc_handle_t handle, uint16_t offset, uint32_t value)
274 {
275 dev_info_t *dip = (dev_info_t *)handle;
276 uint8_t bus, dev, func;
277
278 if (dip == NULL)
279 return;
280
281 if (gfxp_pci_get_bsf(dip, &bus, &dev, &func) != DDI_SUCCESS)
282 return;
283
284 (*pci_putl_func)(bus, dev, func, offset, value);
285 }
286
287 static int
gfxp_pci_find_vd(dev_info_t * dip,void * arg)288 gfxp_pci_find_vd(dev_info_t *dip, void *arg)
289 {
290 int rc;
291 gfxp_pci_bsf_t *pci_bsf;
292 int vendor_id, device_id, class_code;
293
294 /*
295 * Look for vendor-id, device-id, class-code to verify
296 * this is some type of PCI child node.
297 */
298 vendor_id = ddi_prop_get_int(DDI_DEV_T_ANY, dip, DDI_PROP_DONTPASS,
299 "vendor-id", -1);
300 device_id = ddi_prop_get_int(DDI_DEV_T_ANY, dip, DDI_PROP_DONTPASS,
301 "device-id", -1);
302 class_code = ddi_prop_get_int(DDI_DEV_T_ANY, dip, DDI_PROP_DONTPASS,
303 "class-code", -1);
304 if ((vendor_id == -1) || (device_id == -1) || (class_code == -1)) {
305 return (DDI_WALK_CONTINUE);
306 }
307
308 pci_bsf = (gfxp_pci_bsf_t *)arg;
309
310 if ((vendor_id == pci_bsf->vendor) && (device_id == pci_bsf->device)) {
311 pci_bsf->found = 1;
312 rc = DDI_WALK_TERMINATE;
313 } else {
314 rc = DDI_WALK_CONTINUE;
315 }
316
317 return (rc);
318 }
319
320 int
gfxp_pci_device_present(uint16_t vendor,uint16_t device)321 gfxp_pci_device_present(uint16_t vendor, uint16_t device)
322 {
323 gfxp_pci_bsf_t *pci_bsf;
324 int rv;
325
326 /*
327 * Find a PCI device based on its device and vendor id.
328 */
329
330 if ((pci_bsf = kmem_zalloc(sizeof (gfxp_pci_bsf_t), KM_SLEEP)) == NULL)
331 return (0);
332
333 pci_bsf->vendor = vendor;
334 pci_bsf->device = device;
335 ddi_walk_devs(ddi_root_node(), gfxp_pci_find_vd, pci_bsf);
336
337 if (pci_bsf->found) {
338 rv = 1;
339 } else {
340 rv = 0;
341 }
342
343 kmem_free(pci_bsf, sizeof (gfxp_pci_bsf_t));
344
345 return (rv);
346 }
347