1/*-
2 * Copyright (c) 2000 Doug Rabson
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
27#include <sys/cdefs.h>
| 1/*-
2 * Copyright (c) 2000 Doug Rabson
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
27#include <sys/cdefs.h>
|
46
47#include <vm/vm.h>
48#include <vm/vm_object.h>
49#include <vm/pmap.h>
50
51struct agp_ali_softc {
52 struct agp_softc agp;
53 u_int32_t initial_aperture; /* aperture size at startup */
54 struct agp_gatt *gatt;
55};
56
57static const char*
58agp_ali_match(device_t dev)
59{
60 if (pci_get_class(dev) != PCIC_BRIDGE
61 || pci_get_subclass(dev) != PCIS_BRIDGE_HOST)
62 return NULL;
63
64 if (agp_find_caps(dev) == 0)
65 return NULL;
66
67 switch (pci_get_devid(dev)) {
68 case 0x167110b9:
69 return ("Ali M1671 host to AGP bridge");
70 case 0x154110b9:
71 return ("Ali M1541 host to AGP bridge");
72 case 0x162110b9:
73 return ("Ali M1621 host to AGP bridge");
74 };
75
76 return NULL;
77}
78
79static int
80agp_ali_probe(device_t dev)
81{
82 const char *desc;
83
84 if (resource_disabled("agp", device_get_unit(dev)))
85 return (ENXIO);
86 desc = agp_ali_match(dev);
87 if (desc) {
88 device_set_desc(dev, desc);
89 return BUS_PROBE_DEFAULT;
90 }
91
92 return ENXIO;
93}
94
95static int
96agp_ali_attach(device_t dev)
97{
98 struct agp_ali_softc *sc = device_get_softc(dev);
99 struct agp_gatt *gatt;
100 int error;
101 u_int32_t attbase;
102
103 error = agp_generic_attach(dev);
104 if (error)
105 return error;
106
107 sc->initial_aperture = AGP_GET_APERTURE(dev);
108 if (sc->initial_aperture == 0) {
109 device_printf(dev, "bad initial aperture size, disabling\n");
110 return ENXIO;
111 }
112
113 for (;;) {
114 gatt = agp_alloc_gatt(dev);
115 if (gatt)
116 break;
117
118 /*
119 * Probably contigmalloc failure. Try reducing the
120 * aperture so that the gatt size reduces.
121 */
122 if (AGP_SET_APERTURE(dev, AGP_GET_APERTURE(dev) / 2)) {
123 agp_generic_detach(dev);
124 return ENOMEM;
125 }
126 }
127 sc->gatt = gatt;
128
129 /* Install the gatt. */
130 attbase = pci_read_config(dev, AGP_ALI_ATTBASE, 4);
131 pci_write_config(dev, AGP_ALI_ATTBASE, gatt->ag_physical |
132 (attbase & 0xfff), 4);
133
134 /* Enable the TLB. */
135 pci_write_config(dev, AGP_ALI_TLBCTRL, 0x10, 1);
136
137 return 0;
138}
139
140static int
141agp_ali_detach(device_t dev)
142{
143 struct agp_ali_softc *sc = device_get_softc(dev);
144 u_int32_t attbase;
145
146 agp_free_cdev(dev);
147
148 /* Disable the TLB.. */
149 pci_write_config(dev, AGP_ALI_TLBCTRL, 0x90, 1);
150
151 /* Put the aperture back the way it started. */
152 AGP_SET_APERTURE(dev, sc->initial_aperture);
153 attbase = pci_read_config(dev, AGP_ALI_ATTBASE, 4);
154 pci_write_config(dev, AGP_ALI_ATTBASE, attbase & 0xfff, 4);
155
156 agp_free_gatt(sc->gatt);
157 agp_free_res(dev);
158 return 0;
159}
160
161#define M 1024*1024
162
163static u_int32_t agp_ali_table[] = {
164 0, /* 0 - invalid */
165 1, /* 1 - invalid */
166 2, /* 2 - invalid */
167 4*M, /* 3 - invalid */
168 8*M, /* 4 - invalid */
169 0, /* 5 - invalid */
170 16*M, /* 6 - invalid */
171 32*M, /* 7 - invalid */
172 64*M, /* 8 - invalid */
173 128*M, /* 9 - invalid */
174 256*M, /* 10 - invalid */
175};
176#define agp_ali_table_size (sizeof(agp_ali_table) / sizeof(agp_ali_table[0]))
177
178static u_int32_t
179agp_ali_get_aperture(device_t dev)
180{
181 /*
182 * The aperture size is derived from the low bits of attbase.
183 * I'm not sure this is correct..
184 */
185 int i = pci_read_config(dev, AGP_ALI_ATTBASE, 4) & 0xf;
186 if (i >= agp_ali_table_size)
187 return 0;
188 return agp_ali_table[i];
189}
190
191static int
192agp_ali_set_aperture(device_t dev, u_int32_t aperture)
193{
194 int i;
195 u_int32_t attbase;
196
197 for (i = 0; i < agp_ali_table_size; i++)
198 if (agp_ali_table[i] == aperture)
199 break;
200 if (i == agp_ali_table_size)
201 return EINVAL;
202
203 attbase = pci_read_config(dev, AGP_ALI_ATTBASE, 4);
204 pci_write_config(dev, AGP_ALI_ATTBASE, (attbase & ~0xf) | i, 4);
205 return 0;
206}
207
208static int
209agp_ali_bind_page(device_t dev, int offset, vm_offset_t physical)
210{
211 struct agp_ali_softc *sc = device_get_softc(dev);
212
213 if (offset < 0 || offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT))
214 return EINVAL;
215
216 sc->gatt->ag_virtual[offset >> AGP_PAGE_SHIFT] = physical;
217 return 0;
218}
219
220static int
221agp_ali_unbind_page(device_t dev, int offset)
222{
223 struct agp_ali_softc *sc = device_get_softc(dev);
224
225 if (offset < 0 || offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT))
226 return EINVAL;
227
228 sc->gatt->ag_virtual[offset >> AGP_PAGE_SHIFT] = 0;
229 return 0;
230}
231
232static void
233agp_ali_flush_tlb(device_t dev)
234{
235 pci_write_config(dev, AGP_ALI_TLBCTRL, 0x90, 1);
236 pci_write_config(dev, AGP_ALI_TLBCTRL, 0x10, 1);
237}
238
239static device_method_t agp_ali_methods[] = {
240 /* Device interface */
241 DEVMETHOD(device_probe, agp_ali_probe),
242 DEVMETHOD(device_attach, agp_ali_attach),
243 DEVMETHOD(device_detach, agp_ali_detach),
244 DEVMETHOD(device_shutdown, bus_generic_shutdown),
245 DEVMETHOD(device_suspend, bus_generic_suspend),
246 DEVMETHOD(device_resume, bus_generic_resume),
247
248 /* AGP interface */
249 DEVMETHOD(agp_get_aperture, agp_ali_get_aperture),
250 DEVMETHOD(agp_set_aperture, agp_ali_set_aperture),
251 DEVMETHOD(agp_bind_page, agp_ali_bind_page),
252 DEVMETHOD(agp_unbind_page, agp_ali_unbind_page),
253 DEVMETHOD(agp_flush_tlb, agp_ali_flush_tlb),
254 DEVMETHOD(agp_enable, agp_generic_enable),
255 DEVMETHOD(agp_alloc_memory, agp_generic_alloc_memory),
256 DEVMETHOD(agp_free_memory, agp_generic_free_memory),
257 DEVMETHOD(agp_bind_memory, agp_generic_bind_memory),
258 DEVMETHOD(agp_unbind_memory, agp_generic_unbind_memory),
259
260 { 0, 0 }
261};
262
263static driver_t agp_ali_driver = {
264 "agp",
265 agp_ali_methods,
266 sizeof(struct agp_ali_softc),
267};
268
269static devclass_t agp_devclass;
270
271DRIVER_MODULE(agp_ali, hostb, agp_ali_driver, agp_devclass, 0, 0);
272MODULE_DEPEND(agp_ali, agp, 1, 1, 1);
273MODULE_DEPEND(agp_ali, pci, 1, 1, 1);
| 46
47#include <vm/vm.h>
48#include <vm/vm_object.h>
49#include <vm/pmap.h>
50
51struct agp_ali_softc {
52 struct agp_softc agp;
53 u_int32_t initial_aperture; /* aperture size at startup */
54 struct agp_gatt *gatt;
55};
56
57static const char*
58agp_ali_match(device_t dev)
59{
60 if (pci_get_class(dev) != PCIC_BRIDGE
61 || pci_get_subclass(dev) != PCIS_BRIDGE_HOST)
62 return NULL;
63
64 if (agp_find_caps(dev) == 0)
65 return NULL;
66
67 switch (pci_get_devid(dev)) {
68 case 0x167110b9:
69 return ("Ali M1671 host to AGP bridge");
70 case 0x154110b9:
71 return ("Ali M1541 host to AGP bridge");
72 case 0x162110b9:
73 return ("Ali M1621 host to AGP bridge");
74 };
75
76 return NULL;
77}
78
79static int
80agp_ali_probe(device_t dev)
81{
82 const char *desc;
83
84 if (resource_disabled("agp", device_get_unit(dev)))
85 return (ENXIO);
86 desc = agp_ali_match(dev);
87 if (desc) {
88 device_set_desc(dev, desc);
89 return BUS_PROBE_DEFAULT;
90 }
91
92 return ENXIO;
93}
94
95static int
96agp_ali_attach(device_t dev)
97{
98 struct agp_ali_softc *sc = device_get_softc(dev);
99 struct agp_gatt *gatt;
100 int error;
101 u_int32_t attbase;
102
103 error = agp_generic_attach(dev);
104 if (error)
105 return error;
106
107 sc->initial_aperture = AGP_GET_APERTURE(dev);
108 if (sc->initial_aperture == 0) {
109 device_printf(dev, "bad initial aperture size, disabling\n");
110 return ENXIO;
111 }
112
113 for (;;) {
114 gatt = agp_alloc_gatt(dev);
115 if (gatt)
116 break;
117
118 /*
119 * Probably contigmalloc failure. Try reducing the
120 * aperture so that the gatt size reduces.
121 */
122 if (AGP_SET_APERTURE(dev, AGP_GET_APERTURE(dev) / 2)) {
123 agp_generic_detach(dev);
124 return ENOMEM;
125 }
126 }
127 sc->gatt = gatt;
128
129 /* Install the gatt. */
130 attbase = pci_read_config(dev, AGP_ALI_ATTBASE, 4);
131 pci_write_config(dev, AGP_ALI_ATTBASE, gatt->ag_physical |
132 (attbase & 0xfff), 4);
133
134 /* Enable the TLB. */
135 pci_write_config(dev, AGP_ALI_TLBCTRL, 0x10, 1);
136
137 return 0;
138}
139
140static int
141agp_ali_detach(device_t dev)
142{
143 struct agp_ali_softc *sc = device_get_softc(dev);
144 u_int32_t attbase;
145
146 agp_free_cdev(dev);
147
148 /* Disable the TLB.. */
149 pci_write_config(dev, AGP_ALI_TLBCTRL, 0x90, 1);
150
151 /* Put the aperture back the way it started. */
152 AGP_SET_APERTURE(dev, sc->initial_aperture);
153 attbase = pci_read_config(dev, AGP_ALI_ATTBASE, 4);
154 pci_write_config(dev, AGP_ALI_ATTBASE, attbase & 0xfff, 4);
155
156 agp_free_gatt(sc->gatt);
157 agp_free_res(dev);
158 return 0;
159}
160
161#define M 1024*1024
162
163static u_int32_t agp_ali_table[] = {
164 0, /* 0 - invalid */
165 1, /* 1 - invalid */
166 2, /* 2 - invalid */
167 4*M, /* 3 - invalid */
168 8*M, /* 4 - invalid */
169 0, /* 5 - invalid */
170 16*M, /* 6 - invalid */
171 32*M, /* 7 - invalid */
172 64*M, /* 8 - invalid */
173 128*M, /* 9 - invalid */
174 256*M, /* 10 - invalid */
175};
176#define agp_ali_table_size (sizeof(agp_ali_table) / sizeof(agp_ali_table[0]))
177
178static u_int32_t
179agp_ali_get_aperture(device_t dev)
180{
181 /*
182 * The aperture size is derived from the low bits of attbase.
183 * I'm not sure this is correct..
184 */
185 int i = pci_read_config(dev, AGP_ALI_ATTBASE, 4) & 0xf;
186 if (i >= agp_ali_table_size)
187 return 0;
188 return agp_ali_table[i];
189}
190
191static int
192agp_ali_set_aperture(device_t dev, u_int32_t aperture)
193{
194 int i;
195 u_int32_t attbase;
196
197 for (i = 0; i < agp_ali_table_size; i++)
198 if (agp_ali_table[i] == aperture)
199 break;
200 if (i == agp_ali_table_size)
201 return EINVAL;
202
203 attbase = pci_read_config(dev, AGP_ALI_ATTBASE, 4);
204 pci_write_config(dev, AGP_ALI_ATTBASE, (attbase & ~0xf) | i, 4);
205 return 0;
206}
207
208static int
209agp_ali_bind_page(device_t dev, int offset, vm_offset_t physical)
210{
211 struct agp_ali_softc *sc = device_get_softc(dev);
212
213 if (offset < 0 || offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT))
214 return EINVAL;
215
216 sc->gatt->ag_virtual[offset >> AGP_PAGE_SHIFT] = physical;
217 return 0;
218}
219
220static int
221agp_ali_unbind_page(device_t dev, int offset)
222{
223 struct agp_ali_softc *sc = device_get_softc(dev);
224
225 if (offset < 0 || offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT))
226 return EINVAL;
227
228 sc->gatt->ag_virtual[offset >> AGP_PAGE_SHIFT] = 0;
229 return 0;
230}
231
232static void
233agp_ali_flush_tlb(device_t dev)
234{
235 pci_write_config(dev, AGP_ALI_TLBCTRL, 0x90, 1);
236 pci_write_config(dev, AGP_ALI_TLBCTRL, 0x10, 1);
237}
238
239static device_method_t agp_ali_methods[] = {
240 /* Device interface */
241 DEVMETHOD(device_probe, agp_ali_probe),
242 DEVMETHOD(device_attach, agp_ali_attach),
243 DEVMETHOD(device_detach, agp_ali_detach),
244 DEVMETHOD(device_shutdown, bus_generic_shutdown),
245 DEVMETHOD(device_suspend, bus_generic_suspend),
246 DEVMETHOD(device_resume, bus_generic_resume),
247
248 /* AGP interface */
249 DEVMETHOD(agp_get_aperture, agp_ali_get_aperture),
250 DEVMETHOD(agp_set_aperture, agp_ali_set_aperture),
251 DEVMETHOD(agp_bind_page, agp_ali_bind_page),
252 DEVMETHOD(agp_unbind_page, agp_ali_unbind_page),
253 DEVMETHOD(agp_flush_tlb, agp_ali_flush_tlb),
254 DEVMETHOD(agp_enable, agp_generic_enable),
255 DEVMETHOD(agp_alloc_memory, agp_generic_alloc_memory),
256 DEVMETHOD(agp_free_memory, agp_generic_free_memory),
257 DEVMETHOD(agp_bind_memory, agp_generic_bind_memory),
258 DEVMETHOD(agp_unbind_memory, agp_generic_unbind_memory),
259
260 { 0, 0 }
261};
262
263static driver_t agp_ali_driver = {
264 "agp",
265 agp_ali_methods,
266 sizeof(struct agp_ali_softc),
267};
268
269static devclass_t agp_devclass;
270
271DRIVER_MODULE(agp_ali, hostb, agp_ali_driver, agp_devclass, 0, 0);
272MODULE_DEPEND(agp_ali, agp, 1, 1, 1);
273MODULE_DEPEND(agp_ali, pci, 1, 1, 1);
|