2 * Copyright (c) 2003 Matthew N. Dodd <winter@jurai.net>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
26 * $FreeBSD: src/sys/dev/agp/agp_nvidia.c,v 1.13 2007/11/12 21:51:37 jhb Exp $
30 * Written using information gleaned from the
31 * NVIDIA nForce/nForce2 AGPGART Linux Kernel Patch.
36 #include <sys/param.h>
37 #include <sys/systm.h>
38 #include <sys/malloc.h>
39 #include <sys/kernel.h>
44 #include <bus/pci/pcivar.h>
45 #include <bus/pci/pcireg.h>
50 #include <vm/vm_object.h>
53 #define NVIDIA_VENDORID 0x10de
54 #define NVIDIA_DEVICEID_NFORCE 0x01a4
55 #define NVIDIA_DEVICEID_NFORCE2 0x01e0
57 struct agp_nvidia_softc {
59 u_int32_t initial_aperture; /* aperture size at startup */
60 struct agp_gatt * gatt;
62 device_t dev; /* AGP Controller */
63 device_t mc1_dev; /* Memory Controller */
64 device_t mc2_dev; /* Memory Controller */
65 device_t bdev; /* Bridge */
69 int num_active_entries;
73 static const char *agp_nvidia_match(device_t dev);
74 static int agp_nvidia_probe(device_t);
75 static int agp_nvidia_attach(device_t);
76 static int agp_nvidia_detach(device_t);
77 static u_int32_t agp_nvidia_get_aperture(device_t);
78 static int agp_nvidia_set_aperture(device_t, u_int32_t);
79 static int agp_nvidia_bind_page(device_t, int, vm_offset_t);
80 static int agp_nvidia_unbind_page(device_t, int);
82 static int nvidia_init_iorr(u_int32_t, u_int32_t);
85 agp_nvidia_match (device_t dev)
87 if (pci_get_class(dev) != PCIC_BRIDGE ||
88 pci_get_subclass(dev) != PCIS_BRIDGE_HOST ||
89 pci_get_vendor(dev) != NVIDIA_VENDORID)
92 switch (pci_get_device(dev)) {
93 case NVIDIA_DEVICEID_NFORCE:
94 return ("NVIDIA nForce AGP Controller");
95 case NVIDIA_DEVICEID_NFORCE2:
96 return ("NVIDIA nForce2 AGP Controller");
102 agp_nvidia_probe (device_t dev)
106 if (resource_disabled("agp", device_get_unit(dev)))
108 desc = agp_nvidia_match(dev);
111 device_set_desc(dev, desc);
112 return (BUS_PROBE_DEFAULT);
118 agp_nvidia_attach (device_t dev)
120 struct agp_nvidia_softc *sc = device_get_softc(dev);
121 struct agp_gatt *gatt;
129 switch (pci_get_device(dev)) {
130 case NVIDIA_DEVICEID_NFORCE:
131 sc->wbc_mask = 0x00010000;
133 case NVIDIA_DEVICEID_NFORCE2:
134 sc->wbc_mask = 0x80000000;
137 device_printf(dev, "Bad chip id\n");
144 /* Memory Controller 1 */
145 sc->mc1_dev = pci_find_bsf(pci_get_bus(dev), 0, 1);
146 if (sc->mc1_dev == NULL) {
148 "Unable to find NVIDIA Memory Controller 1.\n");
152 /* Memory Controller 2 */
153 sc->mc2_dev = pci_find_bsf(pci_get_bus(dev), 0, 2);
154 if (sc->mc2_dev == NULL) {
156 "Unable to find NVIDIA Memory Controller 2.\n");
160 /* AGP Host to PCI Bridge */
161 sc->bdev = pci_find_bsf(pci_get_bus(dev), 30, 0);
162 if (sc->bdev == NULL) {
164 "Unable to find NVIDIA AGP Host to PCI Bridge.\n");
168 error = agp_generic_attach(dev);
172 sc->initial_aperture = AGP_GET_APERTURE(dev);
173 if (sc->initial_aperture == 0) {
174 device_printf(dev, "bad initial aperture size, disabling\n");
179 gatt = agp_alloc_gatt(dev);
183 * Probably contigmalloc failure. Try reducing the
184 * aperture so that the gatt size reduces.
186 if (AGP_SET_APERTURE(dev, AGP_GET_APERTURE(dev) / 2))
191 apbase = rman_get_start(sc->agp.as_aperture);
192 aplimit = apbase + AGP_GET_APERTURE(dev) - 1;
193 pci_write_config(sc->mc2_dev, AGP_NVIDIA_2_APBASE, apbase, 4);
194 pci_write_config(sc->mc2_dev, AGP_NVIDIA_2_APLIMIT, aplimit, 4);
195 pci_write_config(sc->bdev, AGP_NVIDIA_3_APBASE, apbase, 4);
196 pci_write_config(sc->bdev, AGP_NVIDIA_3_APLIMIT, aplimit, 4);
198 error = nvidia_init_iorr(apbase, AGP_GET_APERTURE(dev));
200 device_printf(dev, "Failed to setup IORRs\n");
204 /* directory size is 64k */
205 size = AGP_GET_APERTURE(dev) / 1024 / 1024;
206 sc->num_dirs = size / 64;
207 sc->num_active_entries = (size == 32) ? 16384 : ((size * 1024) / 4);
209 if (sc->num_dirs == 0) {
211 sc->num_active_entries /= (64 / size);
212 sc->pg_offset = (apbase & (64 * 1024 * 1024 - 1) &
213 ~(AGP_GET_APERTURE(dev) - 1)) / PAGE_SIZE;
216 /* (G)ATT Base Address */
217 for (i = 0; i < 8; i++) {
218 pci_write_config(sc->mc2_dev, AGP_NVIDIA_2_ATTBASE(i),
219 (sc->gatt->ag_physical +
220 (i % sc->num_dirs) * 64 * 1024) | 1, 4);
224 temp = pci_read_config(sc->mc2_dev, AGP_NVIDIA_2_GARTCTRL, 4);
225 pci_write_config(sc->mc2_dev, AGP_NVIDIA_2_GARTCTRL, temp | 0x11, 4);
228 temp = pci_read_config(sc->dev, AGP_NVIDIA_0_APSIZE, 4);
229 pci_write_config(sc->dev, AGP_NVIDIA_0_APSIZE, temp | 0x100, 4);
233 agp_generic_detach(dev);
238 agp_nvidia_detach (device_t dev)
240 struct agp_nvidia_softc *sc = device_get_softc(dev);
246 temp = pci_read_config(sc->dev, AGP_NVIDIA_0_APSIZE, 4);
247 pci_write_config(sc->dev, AGP_NVIDIA_0_APSIZE, temp & ~(0x100), 4);
250 temp = pci_read_config(sc->mc2_dev, AGP_NVIDIA_2_GARTCTRL, 4);
251 pci_write_config(sc->mc2_dev, AGP_NVIDIA_2_GARTCTRL, temp & ~(0x11), 4);
253 /* Put the aperture back the way it started. */
254 AGP_SET_APERTURE(dev, sc->initial_aperture);
256 /* restore iorr for previous aperture size */
257 nvidia_init_iorr(rman_get_start(sc->agp.as_aperture),
258 sc->initial_aperture);
260 agp_free_gatt(sc->gatt);
267 agp_nvidia_get_aperture(device_t dev)
269 switch (pci_read_config(dev, AGP_NVIDIA_0_APSIZE, 1) & 0x0f) {
270 case 0: return (512 * 1024 * 1024); break;
271 case 8: return (256 * 1024 * 1024); break;
272 case 12: return (128 * 1024 * 1024); break;
273 case 14: return (64 * 1024 * 1024); break;
274 case 15: return (32 * 1024 * 1024); break;
276 device_printf(dev, "Invalid aperture setting 0x%x",
277 pci_read_config(dev, AGP_NVIDIA_0_APSIZE, 1));
283 agp_nvidia_set_aperture(device_t dev, u_int32_t aperture)
289 case (512 * 1024 * 1024): key = 0; break;
290 case (256 * 1024 * 1024): key = 8; break;
291 case (128 * 1024 * 1024): key = 12; break;
292 case (64 * 1024 * 1024): key = 14; break;
293 case (32 * 1024 * 1024): key = 15; break;
295 device_printf(dev, "Invalid aperture size (%dMb)\n",
296 aperture / 1024 / 1024);
299 val = pci_read_config(dev, AGP_NVIDIA_0_APSIZE, 1);
300 pci_write_config(dev, AGP_NVIDIA_0_APSIZE, ((val & ~0x0f) | key), 1);
306 agp_nvidia_bind_page(device_t dev, int offset, vm_offset_t physical)
308 struct agp_nvidia_softc *sc = device_get_softc(dev);
311 if (offset < 0 || offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT))
314 index = (sc->pg_offset + offset) >> AGP_PAGE_SHIFT;
315 sc->gatt->ag_virtual[index] = physical | 1;
321 agp_nvidia_unbind_page(device_t dev, int offset)
323 struct agp_nvidia_softc *sc = device_get_softc(dev);
326 if (offset < 0 || offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT))
329 index = (sc->pg_offset + offset) >> AGP_PAGE_SHIFT;
330 sc->gatt->ag_virtual[index] = 0;
336 agp_nvidia_flush_tlb (device_t dev, int offset)
338 struct agp_nvidia_softc *sc;
339 u_int32_t wbc_reg, temp;
340 volatile u_int32_t *ag_virtual;
343 sc = (struct agp_nvidia_softc *)device_get_softc(dev);
346 wbc_reg = pci_read_config(sc->mc1_dev, AGP_NVIDIA_1_WBC, 4);
347 wbc_reg |= sc->wbc_mask;
348 pci_write_config(sc->mc1_dev, AGP_NVIDIA_1_WBC, wbc_reg, 4);
350 /* Wait no more than 3 seconds. */
351 for (i = 0; i < 3000; i++) {
352 wbc_reg = pci_read_config(sc->mc1_dev,
353 AGP_NVIDIA_1_WBC, 4);
354 if ((sc->wbc_mask & wbc_reg) == 0)
361 "TLB flush took more than 3 seconds.\n");
364 ag_virtual = (volatile u_int32_t *)sc->gatt->ag_virtual;
366 /* Flush TLB entries. */
367 pages = sc->gatt->ag_entries * sizeof(u_int32_t) / PAGE_SIZE;
368 for(i = 0; i < pages; i++)
369 temp = ag_virtual[i * PAGE_SIZE / sizeof(u_int32_t)];
370 for(i = 0; i < pages; i++)
371 temp = ag_virtual[i * PAGE_SIZE / sizeof(u_int32_t)];
376 #define SYSCFG 0xC0010010
377 #define IORR_BASE0 0xC0010016
378 #define IORR_MASK0 0xC0010017
379 #define AMD_K7_NUM_IORR 2
382 nvidia_init_iorr(u_int32_t addr, u_int32_t size)
384 quad_t base, mask, sys;
385 u_int32_t iorr_addr, free_iorr_addr;
387 /* Find the iorr that is already used for the addr */
388 /* If not found, determine the uppermost available iorr */
389 free_iorr_addr = AMD_K7_NUM_IORR;
390 for(iorr_addr = 0; iorr_addr < AMD_K7_NUM_IORR; iorr_addr++) {
391 base = rdmsr(IORR_BASE0 + 2 * iorr_addr);
392 mask = rdmsr(IORR_MASK0 + 2 * iorr_addr);
394 if ((base & 0xfffff000ULL) == (addr & 0xfffff000))
397 if ((mask & 0x00000800ULL) == 0)
398 free_iorr_addr = iorr_addr;
401 if (iorr_addr >= AMD_K7_NUM_IORR) {
402 iorr_addr = free_iorr_addr;
403 if (iorr_addr >= AMD_K7_NUM_IORR)
407 base = (addr & ~0xfff) | 0x18;
408 mask = (0xfULL << 32) | ((~(size - 1)) & 0xfffff000) | 0x800;
409 wrmsr(IORR_BASE0 + 2 * iorr_addr, base);
410 wrmsr(IORR_MASK0 + 2 * iorr_addr, mask);
413 sys |= 0x00100000ULL;
419 static device_method_t agp_nvidia_methods[] = {
420 /* Device interface */
421 DEVMETHOD(device_probe, agp_nvidia_probe),
422 DEVMETHOD(device_attach, agp_nvidia_attach),
423 DEVMETHOD(device_detach, agp_nvidia_detach),
424 DEVMETHOD(device_shutdown, bus_generic_shutdown),
425 DEVMETHOD(device_suspend, bus_generic_suspend),
426 DEVMETHOD(device_resume, bus_generic_resume),
429 DEVMETHOD(agp_get_aperture, agp_nvidia_get_aperture),
430 DEVMETHOD(agp_set_aperture, agp_nvidia_set_aperture),
431 DEVMETHOD(agp_bind_page, agp_nvidia_bind_page),
432 DEVMETHOD(agp_unbind_page, agp_nvidia_unbind_page),
433 DEVMETHOD(agp_flush_tlb, agp_nvidia_flush_tlb),
435 DEVMETHOD(agp_enable, agp_generic_enable),
436 DEVMETHOD(agp_alloc_memory, agp_generic_alloc_memory),
437 DEVMETHOD(agp_free_memory, agp_generic_free_memory),
438 DEVMETHOD(agp_bind_memory, agp_generic_bind_memory),
439 DEVMETHOD(agp_unbind_memory, agp_generic_unbind_memory),
444 static driver_t agp_nvidia_driver = {
447 sizeof(struct agp_nvidia_softc),
450 static devclass_t agp_devclass;
452 DRIVER_MODULE(agp_nvidia, pci, agp_nvidia_driver, agp_devclass, NULL, NULL);
453 MODULE_DEPEND(agp_nvidia, agp, 1, 1, 1);
454 MODULE_DEPEND(agp_nvidia, pci, 1, 1, 1);