1/*-
2 * Copyright (c) 2005 Eric Anholt
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * Based on reading the Linux 2.6.8.1 driver by Dave Jones.
27 */
28
29#include <sys/cdefs.h>
| 1/*-
2 * Copyright (c) 2005 Eric Anholt
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * Based on reading the Linux 2.6.8.1 driver by Dave Jones.
27 */
28
29#include <sys/cdefs.h>
|
48
49#include <vm/vm.h>
50#include <vm/vm_object.h>
51#include <vm/pmap.h>
52#include <machine/bus.h>
53#include <machine/resource.h>
54#include <sys/rman.h>
55
56MALLOC_DECLARE(M_AGP);
57
58#define READ4(off) bus_space_read_4(sc->bst, sc->bsh, off)
59#define WRITE4(off,v) bus_space_write_4(sc->bst, sc->bsh, off, v)
60
61struct agp_ati_softc {
62 struct agp_softc agp;
63 struct resource *regs; /* memory mapped control registers */
64 bus_space_tag_t bst; /* bus_space tag */
65 bus_space_handle_t bsh; /* bus_space handle */
66 u_int32_t initial_aperture; /* aperture size at startup */
67 char is_rs300;
68
69 /* The GATT */
70 u_int32_t ag_entries;
71 u_int32_t *ag_virtual; /* virtual address of gatt */
72 u_int32_t *ag_vdir; /* virtual address of page dir */
73 vm_offset_t ag_pdir; /* physical address of page dir */
74};
75
76
77static const char*
78agp_ati_match(device_t dev)
79{
80 if (pci_get_class(dev) != PCIC_BRIDGE ||
81 pci_get_subclass(dev) != PCIS_BRIDGE_HOST)
82 return NULL;
83
84 if (agp_find_caps(dev) == 0)
85 return NULL;
86
87 switch (pci_get_devid(dev)) {
88 case 0xcab01002:
89 return ("ATI RS100 AGP bridge");
90 case 0xcab21002:
91 return ("ATI RS200 AGP bridge");
92 case 0xcbb21002:
93 return ("ATI RS200M AGP bridge");
94 case 0xcab31002:
95 return ("ATI RS250 AGP bridge");
96 case 0x58301002:
97 return ("ATI RS300_100 AGP bridge");
98 case 0x58311002:
99 return ("ATI RS300_133 AGP bridge");
100 case 0x58321002:
101 return ("ATI RS300_166 AGP bridge");
102 case 0x58331002:
103 return ("ATI RS300_200 AGP bridge");
104 };
105
106 return NULL;
107}
108
109static int
110agp_ati_probe(device_t dev)
111{
112 const char *desc;
113
114 desc = agp_ati_match(dev);
115 if (desc) {
116 device_set_desc(dev, desc);
117 return 0;
118 }
119
120 return ENXIO;
121}
122
123static int
124agp_ati_alloc_gatt(device_t dev)
125{
126 struct agp_ati_softc *sc = device_get_softc(dev);
127 u_int32_t apsize = AGP_GET_APERTURE(dev);
128 u_int32_t entries = apsize >> AGP_PAGE_SHIFT;
129 u_int32_t apbase_offset;
130 int i;
131
132 /* Alloc the GATT -- pointers to pages of AGP memory */
133 sc->ag_entries = entries;
134 sc->ag_virtual = malloc(entries * sizeof(u_int32_t), M_AGP,
135 M_NOWAIT | M_ZERO);
136 if (sc->ag_virtual == NULL) {
137 if (bootverbose)
138 device_printf(dev, "aperture allocation failed\n");
139 return ENOMEM;
140 }
141
142 /* Alloc the page directory -- pointers to each page of the GATT */
143 sc->ag_vdir = malloc(AGP_PAGE_SIZE, M_AGP, M_NOWAIT | M_ZERO);
144 if (sc->ag_vdir == NULL) {
145 if (bootverbose)
146 device_printf(dev, "pagedir allocation failed\n");
147 free(sc->ag_virtual, M_AGP);
148 return ENOMEM;
149 }
150 sc->ag_pdir = vtophys((vm_offset_t)sc->ag_vdir);
151
152 apbase_offset = pci_read_config(dev, AGP_APBASE, 4) >> 22;
153 /* Fill in the pagedir's pointers to GATT pages */
154 for (i = 0; i < sc->ag_entries / 1024; i++) {
155 vm_offset_t va;
156 vm_offset_t pa;
157
158 va = ((vm_offset_t)sc->ag_virtual) + i * AGP_PAGE_SIZE;
159 pa = vtophys(va);
160 sc->ag_vdir[apbase_offset + i] = pa | 1;
161 }
162
163 /*
164 * Make sure the chipset can see everything.
165 */
166 agp_flush_cache();
167
168 return 0;
169}
170
171
172static int
173agp_ati_attach(device_t dev)
174{
175 struct agp_ati_softc *sc = device_get_softc(dev);
176 int error, rid;
177 u_int32_t temp;
178 u_int32_t apsize_reg, agpmode_reg;
179
180 error = agp_generic_attach(dev);
181 if (error)
182 return error;
183
184 switch (pci_get_devid(dev)) {
185 case 0xcab01002: /* ATI RS100 AGP bridge */
186 case 0xcab21002: /* ATI RS200 AGP bridge */
187 case 0xcbb21002: /* ATI RS200M AGP bridge */
188 case 0xcab31002: /* ATI RS250 AGP bridge */
189 sc->is_rs300 = 0;
190 apsize_reg = ATI_RS100_APSIZE;
191 agpmode_reg = ATI_RS100_IG_AGPMODE;
192 break;
193 case 0x58301002: /* ATI RS300_100 AGP bridge */
194 case 0x58311002: /* ATI RS300_133 AGP bridge */
195 case 0x58321002: /* ATI RS300_166 AGP bridge */
196 case 0x58331002: /* ATI RS300_200 AGP bridge */
197 sc->is_rs300 = 1;
198 apsize_reg = ATI_RS300_APSIZE;
199 agpmode_reg = ATI_RS300_IG_AGPMODE;
200 break;
201 default:
202 /* Unknown chipset */
203 return EINVAL;
204 };
205
206 rid = ATI_GART_MMADDR;
207 sc->regs = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE);
208 if (!sc->regs) {
209 agp_generic_detach(dev);
210 return ENOMEM;
211 }
212
213 sc->bst = rman_get_bustag(sc->regs);
214 sc->bsh = rman_get_bushandle(sc->regs);
215
216 sc->initial_aperture = AGP_GET_APERTURE(dev);
217
218 for (;;) {
219 if (agp_ati_alloc_gatt(dev) == 0)
220 break;
221
222 /*
223 * Probably contigmalloc failure. Try reducing the
224 * aperture so that the gatt size reduces.
225 */
226 if (AGP_SET_APERTURE(dev, AGP_GET_APERTURE(dev) / 2))
227 return ENOMEM;
228 }
229
230 temp = pci_read_config(dev, apsize_reg, 4);
231 pci_write_config(dev, apsize_reg, temp | 1, 4);
232
233 pci_write_config(dev, agpmode_reg, 0x20000, 4);
234
235 WRITE4(ATI_GART_FEATURE_ID, 0x00060000);
236
237 temp = pci_read_config(dev, 4, 4); /* XXX: Magic reg# */
238 pci_write_config(dev, 4, temp | (1 << 14), 4);
239
240 WRITE4(ATI_GART_BASE, sc->ag_pdir);
241
242 AGP_FLUSH_TLB(dev);
243
244 return 0;
245}
246
247static int
248agp_ati_detach(device_t dev)
249{
250 struct agp_ati_softc *sc = device_get_softc(dev);
251 u_int32_t apsize_reg, temp;
252
253 agp_free_cdev(dev);
254
255 if (sc->is_rs300)
256 apsize_reg = ATI_RS300_APSIZE;
257 else
258 apsize_reg = ATI_RS100_APSIZE;
259
260 /* Clear the GATT base */
261 WRITE4(ATI_GART_BASE, 0);
262
263 /* Put the aperture back the way it started. */
264 AGP_SET_APERTURE(dev, sc->initial_aperture);
265
266 temp = pci_read_config(dev, apsize_reg, 4);
267 pci_write_config(dev, apsize_reg, temp & ~1, 4);
268
269 free(sc->ag_vdir, M_AGP);
270 free(sc->ag_virtual, M_AGP);
271
272 bus_release_resource(dev, SYS_RES_MEMORY, ATI_GART_MMADDR, sc->regs);
273 agp_free_res(dev);
274
275 return 0;
276}
277
278static u_int32_t
279agp_ati_get_aperture(device_t dev)
280{
281 struct agp_ati_softc *sc = device_get_softc(dev);
282 int size_value;
283
284 if (sc->is_rs300)
285 size_value = pci_read_config(dev, ATI_RS300_APSIZE, 4);
286 else
287 size_value = pci_read_config(dev, ATI_RS100_APSIZE, 4);
288
289 size_value = (size_value & 0x0000000e) >> 1;
290 size_value = (32 * 1024 * 1024) << size_value;
291
292 return size_value;
293}
294
295static int
296agp_ati_set_aperture(device_t dev, u_int32_t aperture)
297{
298 struct agp_ati_softc *sc = device_get_softc(dev);
299 int size_value;
300 u_int32_t apsize_reg;
301
302 if (sc->is_rs300)
303 apsize_reg = ATI_RS300_APSIZE;
304 else
305 apsize_reg = ATI_RS100_APSIZE;
306
307 size_value = pci_read_config(dev, apsize_reg, 4);
308
309 size_value &= ~0x0000000e;
310 size_value |= (ffs(aperture / (32 * 1024 * 1024)) - 1) << 1;
311
312 pci_write_config(dev, apsize_reg, size_value, 4);
313
314 return 0;
315}
316
317static int
318agp_ati_bind_page(device_t dev, int offset, vm_offset_t physical)
319{
320 struct agp_ati_softc *sc = device_get_softc(dev);
321
322 if (offset < 0 || offset >= (sc->ag_entries << AGP_PAGE_SHIFT))
323 return EINVAL;
324
325 sc->ag_virtual[offset >> AGP_PAGE_SHIFT] = physical | 1;
326
327 return 0;
328}
329
330static int
331agp_ati_unbind_page(device_t dev, int offset)
332{
333 struct agp_ati_softc *sc = device_get_softc(dev);
334
335 if (offset < 0 || offset >= (sc->ag_entries << AGP_PAGE_SHIFT))
336 return EINVAL;
337
338 sc->ag_virtual[offset >> AGP_PAGE_SHIFT] = 0;
339 return 0;
340}
341
342static void
343agp_ati_flush_tlb(device_t dev)
344{
345 struct agp_ati_softc *sc = device_get_softc(dev);
346
347 /* Set the cache invalidate bit and wait for the chipset to clear */
348 WRITE4(ATI_GART_CACHE_CNTRL, 1);
349 (void)READ4(ATI_GART_CACHE_CNTRL);
350}
351
352static device_method_t agp_ati_methods[] = {
353 /* Device interface */
354 DEVMETHOD(device_probe, agp_ati_probe),
355 DEVMETHOD(device_attach, agp_ati_attach),
356 DEVMETHOD(device_detach, agp_ati_detach),
357 DEVMETHOD(device_shutdown, bus_generic_shutdown),
358 DEVMETHOD(device_suspend, bus_generic_suspend),
359 DEVMETHOD(device_resume, bus_generic_resume),
360
361 /* AGP interface */
362 DEVMETHOD(agp_get_aperture, agp_ati_get_aperture),
363 DEVMETHOD(agp_set_aperture, agp_ati_set_aperture),
364 DEVMETHOD(agp_bind_page, agp_ati_bind_page),
365 DEVMETHOD(agp_unbind_page, agp_ati_unbind_page),
366 DEVMETHOD(agp_flush_tlb, agp_ati_flush_tlb),
367 DEVMETHOD(agp_enable, agp_generic_enable),
368 DEVMETHOD(agp_alloc_memory, agp_generic_alloc_memory),
369 DEVMETHOD(agp_free_memory, agp_generic_free_memory),
370 DEVMETHOD(agp_bind_memory, agp_generic_bind_memory),
371 DEVMETHOD(agp_unbind_memory, agp_generic_unbind_memory),
372
373 { 0, 0 }
374};
375
376static driver_t agp_ati_driver = {
377 "agp",
378 agp_ati_methods,
379 sizeof(struct agp_ati_softc),
380};
381
382static devclass_t agp_devclass;
383
384DRIVER_MODULE(agp_ati, hostb, agp_ati_driver, agp_devclass, 0, 0);
385MODULE_DEPEND(agp_ati, agp, 1, 1, 1);
386MODULE_DEPEND(agp_ati, pci, 1, 1, 1);
| 48
49#include <vm/vm.h>
50#include <vm/vm_object.h>
51#include <vm/pmap.h>
52#include <machine/bus.h>
53#include <machine/resource.h>
54#include <sys/rman.h>
55
56MALLOC_DECLARE(M_AGP);
57
58#define READ4(off) bus_space_read_4(sc->bst, sc->bsh, off)
59#define WRITE4(off,v) bus_space_write_4(sc->bst, sc->bsh, off, v)
60
61struct agp_ati_softc {
62 struct agp_softc agp;
63 struct resource *regs; /* memory mapped control registers */
64 bus_space_tag_t bst; /* bus_space tag */
65 bus_space_handle_t bsh; /* bus_space handle */
66 u_int32_t initial_aperture; /* aperture size at startup */
67 char is_rs300;
68
69 /* The GATT */
70 u_int32_t ag_entries;
71 u_int32_t *ag_virtual; /* virtual address of gatt */
72 u_int32_t *ag_vdir; /* virtual address of page dir */
73 vm_offset_t ag_pdir; /* physical address of page dir */
74};
75
76
77static const char*
78agp_ati_match(device_t dev)
79{
80 if (pci_get_class(dev) != PCIC_BRIDGE ||
81 pci_get_subclass(dev) != PCIS_BRIDGE_HOST)
82 return NULL;
83
84 if (agp_find_caps(dev) == 0)
85 return NULL;
86
87 switch (pci_get_devid(dev)) {
88 case 0xcab01002:
89 return ("ATI RS100 AGP bridge");
90 case 0xcab21002:
91 return ("ATI RS200 AGP bridge");
92 case 0xcbb21002:
93 return ("ATI RS200M AGP bridge");
94 case 0xcab31002:
95 return ("ATI RS250 AGP bridge");
96 case 0x58301002:
97 return ("ATI RS300_100 AGP bridge");
98 case 0x58311002:
99 return ("ATI RS300_133 AGP bridge");
100 case 0x58321002:
101 return ("ATI RS300_166 AGP bridge");
102 case 0x58331002:
103 return ("ATI RS300_200 AGP bridge");
104 };
105
106 return NULL;
107}
108
109static int
110agp_ati_probe(device_t dev)
111{
112 const char *desc;
113
114 desc = agp_ati_match(dev);
115 if (desc) {
116 device_set_desc(dev, desc);
117 return 0;
118 }
119
120 return ENXIO;
121}
122
123static int
124agp_ati_alloc_gatt(device_t dev)
125{
126 struct agp_ati_softc *sc = device_get_softc(dev);
127 u_int32_t apsize = AGP_GET_APERTURE(dev);
128 u_int32_t entries = apsize >> AGP_PAGE_SHIFT;
129 u_int32_t apbase_offset;
130 int i;
131
132 /* Alloc the GATT -- pointers to pages of AGP memory */
133 sc->ag_entries = entries;
134 sc->ag_virtual = malloc(entries * sizeof(u_int32_t), M_AGP,
135 M_NOWAIT | M_ZERO);
136 if (sc->ag_virtual == NULL) {
137 if (bootverbose)
138 device_printf(dev, "aperture allocation failed\n");
139 return ENOMEM;
140 }
141
142 /* Alloc the page directory -- pointers to each page of the GATT */
143 sc->ag_vdir = malloc(AGP_PAGE_SIZE, M_AGP, M_NOWAIT | M_ZERO);
144 if (sc->ag_vdir == NULL) {
145 if (bootverbose)
146 device_printf(dev, "pagedir allocation failed\n");
147 free(sc->ag_virtual, M_AGP);
148 return ENOMEM;
149 }
150 sc->ag_pdir = vtophys((vm_offset_t)sc->ag_vdir);
151
152 apbase_offset = pci_read_config(dev, AGP_APBASE, 4) >> 22;
153 /* Fill in the pagedir's pointers to GATT pages */
154 for (i = 0; i < sc->ag_entries / 1024; i++) {
155 vm_offset_t va;
156 vm_offset_t pa;
157
158 va = ((vm_offset_t)sc->ag_virtual) + i * AGP_PAGE_SIZE;
159 pa = vtophys(va);
160 sc->ag_vdir[apbase_offset + i] = pa | 1;
161 }
162
163 /*
164 * Make sure the chipset can see everything.
165 */
166 agp_flush_cache();
167
168 return 0;
169}
170
171
172static int
173agp_ati_attach(device_t dev)
174{
175 struct agp_ati_softc *sc = device_get_softc(dev);
176 int error, rid;
177 u_int32_t temp;
178 u_int32_t apsize_reg, agpmode_reg;
179
180 error = agp_generic_attach(dev);
181 if (error)
182 return error;
183
184 switch (pci_get_devid(dev)) {
185 case 0xcab01002: /* ATI RS100 AGP bridge */
186 case 0xcab21002: /* ATI RS200 AGP bridge */
187 case 0xcbb21002: /* ATI RS200M AGP bridge */
188 case 0xcab31002: /* ATI RS250 AGP bridge */
189 sc->is_rs300 = 0;
190 apsize_reg = ATI_RS100_APSIZE;
191 agpmode_reg = ATI_RS100_IG_AGPMODE;
192 break;
193 case 0x58301002: /* ATI RS300_100 AGP bridge */
194 case 0x58311002: /* ATI RS300_133 AGP bridge */
195 case 0x58321002: /* ATI RS300_166 AGP bridge */
196 case 0x58331002: /* ATI RS300_200 AGP bridge */
197 sc->is_rs300 = 1;
198 apsize_reg = ATI_RS300_APSIZE;
199 agpmode_reg = ATI_RS300_IG_AGPMODE;
200 break;
201 default:
202 /* Unknown chipset */
203 return EINVAL;
204 };
205
206 rid = ATI_GART_MMADDR;
207 sc->regs = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE);
208 if (!sc->regs) {
209 agp_generic_detach(dev);
210 return ENOMEM;
211 }
212
213 sc->bst = rman_get_bustag(sc->regs);
214 sc->bsh = rman_get_bushandle(sc->regs);
215
216 sc->initial_aperture = AGP_GET_APERTURE(dev);
217
218 for (;;) {
219 if (agp_ati_alloc_gatt(dev) == 0)
220 break;
221
222 /*
223 * Probably contigmalloc failure. Try reducing the
224 * aperture so that the gatt size reduces.
225 */
226 if (AGP_SET_APERTURE(dev, AGP_GET_APERTURE(dev) / 2))
227 return ENOMEM;
228 }
229
230 temp = pci_read_config(dev, apsize_reg, 4);
231 pci_write_config(dev, apsize_reg, temp | 1, 4);
232
233 pci_write_config(dev, agpmode_reg, 0x20000, 4);
234
235 WRITE4(ATI_GART_FEATURE_ID, 0x00060000);
236
237 temp = pci_read_config(dev, 4, 4); /* XXX: Magic reg# */
238 pci_write_config(dev, 4, temp | (1 << 14), 4);
239
240 WRITE4(ATI_GART_BASE, sc->ag_pdir);
241
242 AGP_FLUSH_TLB(dev);
243
244 return 0;
245}
246
247static int
248agp_ati_detach(device_t dev)
249{
250 struct agp_ati_softc *sc = device_get_softc(dev);
251 u_int32_t apsize_reg, temp;
252
253 agp_free_cdev(dev);
254
255 if (sc->is_rs300)
256 apsize_reg = ATI_RS300_APSIZE;
257 else
258 apsize_reg = ATI_RS100_APSIZE;
259
260 /* Clear the GATT base */
261 WRITE4(ATI_GART_BASE, 0);
262
263 /* Put the aperture back the way it started. */
264 AGP_SET_APERTURE(dev, sc->initial_aperture);
265
266 temp = pci_read_config(dev, apsize_reg, 4);
267 pci_write_config(dev, apsize_reg, temp & ~1, 4);
268
269 free(sc->ag_vdir, M_AGP);
270 free(sc->ag_virtual, M_AGP);
271
272 bus_release_resource(dev, SYS_RES_MEMORY, ATI_GART_MMADDR, sc->regs);
273 agp_free_res(dev);
274
275 return 0;
276}
277
278static u_int32_t
279agp_ati_get_aperture(device_t dev)
280{
281 struct agp_ati_softc *sc = device_get_softc(dev);
282 int size_value;
283
284 if (sc->is_rs300)
285 size_value = pci_read_config(dev, ATI_RS300_APSIZE, 4);
286 else
287 size_value = pci_read_config(dev, ATI_RS100_APSIZE, 4);
288
289 size_value = (size_value & 0x0000000e) >> 1;
290 size_value = (32 * 1024 * 1024) << size_value;
291
292 return size_value;
293}
294
295static int
296agp_ati_set_aperture(device_t dev, u_int32_t aperture)
297{
298 struct agp_ati_softc *sc = device_get_softc(dev);
299 int size_value;
300 u_int32_t apsize_reg;
301
302 if (sc->is_rs300)
303 apsize_reg = ATI_RS300_APSIZE;
304 else
305 apsize_reg = ATI_RS100_APSIZE;
306
307 size_value = pci_read_config(dev, apsize_reg, 4);
308
309 size_value &= ~0x0000000e;
310 size_value |= (ffs(aperture / (32 * 1024 * 1024)) - 1) << 1;
311
312 pci_write_config(dev, apsize_reg, size_value, 4);
313
314 return 0;
315}
316
317static int
318agp_ati_bind_page(device_t dev, int offset, vm_offset_t physical)
319{
320 struct agp_ati_softc *sc = device_get_softc(dev);
321
322 if (offset < 0 || offset >= (sc->ag_entries << AGP_PAGE_SHIFT))
323 return EINVAL;
324
325 sc->ag_virtual[offset >> AGP_PAGE_SHIFT] = physical | 1;
326
327 return 0;
328}
329
330static int
331agp_ati_unbind_page(device_t dev, int offset)
332{
333 struct agp_ati_softc *sc = device_get_softc(dev);
334
335 if (offset < 0 || offset >= (sc->ag_entries << AGP_PAGE_SHIFT))
336 return EINVAL;
337
338 sc->ag_virtual[offset >> AGP_PAGE_SHIFT] = 0;
339 return 0;
340}
341
342static void
343agp_ati_flush_tlb(device_t dev)
344{
345 struct agp_ati_softc *sc = device_get_softc(dev);
346
347 /* Set the cache invalidate bit and wait for the chipset to clear */
348 WRITE4(ATI_GART_CACHE_CNTRL, 1);
349 (void)READ4(ATI_GART_CACHE_CNTRL);
350}
351
352static device_method_t agp_ati_methods[] = {
353 /* Device interface */
354 DEVMETHOD(device_probe, agp_ati_probe),
355 DEVMETHOD(device_attach, agp_ati_attach),
356 DEVMETHOD(device_detach, agp_ati_detach),
357 DEVMETHOD(device_shutdown, bus_generic_shutdown),
358 DEVMETHOD(device_suspend, bus_generic_suspend),
359 DEVMETHOD(device_resume, bus_generic_resume),
360
361 /* AGP interface */
362 DEVMETHOD(agp_get_aperture, agp_ati_get_aperture),
363 DEVMETHOD(agp_set_aperture, agp_ati_set_aperture),
364 DEVMETHOD(agp_bind_page, agp_ati_bind_page),
365 DEVMETHOD(agp_unbind_page, agp_ati_unbind_page),
366 DEVMETHOD(agp_flush_tlb, agp_ati_flush_tlb),
367 DEVMETHOD(agp_enable, agp_generic_enable),
368 DEVMETHOD(agp_alloc_memory, agp_generic_alloc_memory),
369 DEVMETHOD(agp_free_memory, agp_generic_free_memory),
370 DEVMETHOD(agp_bind_memory, agp_generic_bind_memory),
371 DEVMETHOD(agp_unbind_memory, agp_generic_unbind_memory),
372
373 { 0, 0 }
374};
375
376static driver_t agp_ati_driver = {
377 "agp",
378 agp_ati_methods,
379 sizeof(struct agp_ati_softc),
380};
381
382static devclass_t agp_devclass;
383
384DRIVER_MODULE(agp_ati, hostb, agp_ati_driver, agp_devclass, 0, 0);
385MODULE_DEPEND(agp_ati, agp, 1, 1, 1);
386MODULE_DEPEND(agp_ati, pci, 1, 1, 1);
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