/*- * Copyright (c) 2000 Doug Rabson * Copyright (c) 2000 Ruslan Ermilov * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * $FreeBSD: src/sys/pci/agp_i810.c,v 1.1.2.5 2002/09/15 08:45:41 anholt Exp $ */ /* * Fixes for 830/845G support: David Dawes */ #include "opt_bus.h" #include "opt_pci.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include MALLOC_DECLARE(M_AGP); #define READ1(off) bus_space_read_1(sc->bst, sc->bsh, off) #define READ4(off) bus_space_read_4(sc->bst, sc->bsh, off) #define WRITE4(off,v) bus_space_write_4(sc->bst, sc->bsh, off, v) #define CHIP_I810 0 /* i810/i815 */ #define CHIP_I830 1 /* i830/i845 */ struct agp_i810_softc { struct agp_softc agp; u_int32_t initial_aperture; /* aperture size at startup */ struct agp_gatt *gatt; int chiptype; /* i810-like or i830 */ u_int32_t dcache_size; /* i810 only */ u_int32_t stolen; /* number of i830/845 gtt entries for stolen memory */ device_t bdev; /* bridge device */ struct resource *regs; /* memory mapped GC registers */ bus_space_tag_t bst; /* bus_space tag */ bus_space_handle_t bsh; /* bus_space handle */ }; static const char* agp_i810_match(device_t dev) { if (pci_get_class(dev) != PCIC_DISPLAY || pci_get_subclass(dev) != PCIS_DISPLAY_VGA) return NULL; switch (pci_get_devid(dev)) { case 0x71218086: return ("Intel 82810 (i810 GMCH) SVGA controller"); case 0x71238086: return ("Intel 82810-DC100 (i810-DC100 GMCH) SVGA controller"); case 0x71258086: return ("Intel 82810E (i810E GMCH) SVGA controller"); case 0x11328086: return ("Intel 82815 (i815 GMCH) SVGA controller"); case 0x35778086: return ("Intel 82830 (i830M GMCH) SVGA controller"); case 0x25628086: return ("Intel 82845 (i845 GMCH) SVGA controller"); }; return NULL; } /* * Find bridge device. */ static device_t agp_i810_find_bridge(device_t dev) { device_t *children, child; int nchildren, i; u_int32_t devid; /* * Calculate bridge device's ID. */ devid = pci_get_devid(dev); switch (devid) { case 0x71218086: case 0x71238086: case 0x71258086: devid -= 0x10000; break; case 0x11328086: case 0x35778086: case 0x25628086: devid -= 0x20000; break; }; if (device_get_children(device_get_parent(dev), &children, &nchildren)) return 0; for (i = 0; i < nchildren; i++) { child = children[i]; if (pci_get_devid(child) == devid) { free(children, M_TEMP); return child; } } free(children, M_TEMP); return 0; } static int agp_i810_probe(device_t dev) { const char *desc; desc = agp_i810_match(dev); if (desc) { device_t bdev; u_int8_t smram; int devid = pci_get_devid(dev); bdev = agp_i810_find_bridge(dev); if (!bdev) { if (bootverbose) printf("I810: can't find bridge device\n"); return ENXIO; } /* * checking whether internal graphics device has been activated. */ if ( (devid != 0x35778086 ) && (devid != 0x25628086 ) ) { smram = pci_read_config(bdev, AGP_I810_SMRAM, 1); if ((smram & AGP_I810_SMRAM_GMS) == AGP_I810_SMRAM_GMS_DISABLED) { if (bootverbose) printf("I810: disabled, not probing\n"); return ENXIO; } } else { /* I830MG */ unsigned int gcc1; gcc1 = pci_read_config(bdev, AGP_I830_GCC1, 1); if ((gcc1 & AGP_I830_GCC1_DEV2) == AGP_I830_GCC1_DEV2_DISABLED) { if (bootverbose) printf("I830: disabled, not probing\n"); return ENXIO; } } device_verbose(dev); device_set_desc(dev, desc); return 0; } return ENXIO; } static int agp_i810_attach(device_t dev) { struct agp_i810_softc *sc = device_get_softc(dev); struct agp_gatt *gatt; int error, rid; sc->bdev = agp_i810_find_bridge(dev); if (!sc->bdev) return ENOENT; error = agp_generic_attach(dev); if (error) return error; switch (pci_get_devid(dev)) { case 0x71218086: case 0x71238086: case 0x71258086: case 0x11328086: sc->chiptype = CHIP_I810; break; case 0x35778086: case 0x25628086: sc->chiptype = CHIP_I830; break; }; /* Same for i810 and i830 */ rid = AGP_I810_MMADR; sc->regs = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid, 0, ~0, 1, RF_ACTIVE); if (!sc->regs) { agp_generic_detach(dev); return ENOMEM; } sc->bst = rman_get_bustag(sc->regs); sc->bsh = rman_get_bushandle(sc->regs); sc->initial_aperture = AGP_GET_APERTURE(dev); gatt = malloc( sizeof(struct agp_gatt), M_AGP, M_NOWAIT); if (!gatt) { agp_generic_detach(dev); return ENOMEM; } sc->gatt = gatt; gatt->ag_entries = AGP_GET_APERTURE(dev) >> AGP_PAGE_SHIFT; if ( sc->chiptype == CHIP_I810 ) { /* Some i810s have on-chip memory called dcache */ if (READ1(AGP_I810_DRT) & AGP_I810_DRT_POPULATED) sc->dcache_size = 4 * 1024 * 1024; else sc->dcache_size = 0; /* According to the specs the gatt on the i810 must be 64k */ gatt->ag_virtual = contigmalloc( 64 * 1024, M_AGP, 0, 0, ~0, PAGE_SIZE, 0); if (!gatt->ag_virtual) { if (bootverbose) device_printf(dev, "contiguous allocation failed\n"); free(gatt, M_AGP); agp_generic_detach(dev); return ENOMEM; } bzero(gatt->ag_virtual, gatt->ag_entries * sizeof(u_int32_t)); gatt->ag_physical = vtophys((vm_offset_t) gatt->ag_virtual); agp_flush_cache(); /* Install the GATT. */ WRITE4(AGP_I810_PGTBL_CTL, gatt->ag_physical | 1); } else { /* The i830 automatically initializes the 128k gatt on boot. */ unsigned int gcc1, pgtblctl; gcc1 = pci_read_config(sc->bdev, AGP_I830_GCC1, 1); switch (gcc1 & AGP_I830_GCC1_GMS) { case AGP_I830_GCC1_GMS_STOLEN_512: sc->stolen = (512 - 132) * 1024 / 4096; break; case AGP_I830_GCC1_GMS_STOLEN_1024: sc->stolen = (1024 - 132) * 1024 / 4096; break; case AGP_I830_GCC1_GMS_STOLEN_8192: sc->stolen = (8192 - 132) * 1024 / 4096; break; default: sc->stolen = 0; device_printf(dev, "unknown memory configuration, disabling\n"); agp_generic_detach(dev); return EINVAL; } if (sc->stolen > 0) device_printf(dev, "detected %dk stolen memory\n", sc->stolen * 4); device_printf(dev, "aperture size is %dM\n", sc->initial_aperture / 1024 / 1024); /* GATT address is already in there, make sure it's enabled */ pgtblctl = READ4(AGP_I810_PGTBL_CTL); #if 0 device_printf(dev, "PGTBL_CTL is 0x%08x\n", pgtblctl); #endif pgtblctl |= 1; WRITE4(AGP_I810_PGTBL_CTL, pgtblctl); gatt->ag_physical = pgtblctl & ~1; } /* * Make sure the chipset can see everything. */ agp_flush_cache(); return 0; } static int agp_i810_detach(device_t dev) { struct agp_i810_softc *sc = device_get_softc(dev); int error; error = agp_generic_detach(dev); if (error) return error; /* Clear the GATT base. */ if ( sc->chiptype == CHIP_I810 ) { WRITE4(AGP_I810_PGTBL_CTL, 0); } else { unsigned int pgtblctl; pgtblctl = READ4(AGP_I810_PGTBL_CTL); pgtblctl &= ~1; WRITE4(AGP_I810_PGTBL_CTL, pgtblctl); } /* Put the aperture back the way it started. */ AGP_SET_APERTURE(dev, sc->initial_aperture); if ( sc->chiptype == CHIP_I810 ) { contigfree(sc->gatt->ag_virtual, 64 * 1024, M_AGP); } free(sc->gatt, M_AGP); bus_release_resource(dev, SYS_RES_MEMORY, AGP_I810_MMADR, sc->regs); return 0; } static u_int32_t agp_i810_get_aperture(device_t dev) { struct agp_i810_softc *sc = device_get_softc(dev); if ( sc->chiptype == CHIP_I810 ) { u_int16_t miscc; miscc = pci_read_config(sc->bdev, AGP_I810_MISCC, 2); if ((miscc & AGP_I810_MISCC_WINSIZE) == AGP_I810_MISCC_WINSIZE_32) return 32 * 1024 * 1024; else return 64 * 1024 * 1024; } else { /* I830 */ unsigned int gcc1; gcc1 = pci_read_config(sc->bdev, AGP_I830_GCC1, 2); if ((gcc1 & AGP_I830_GCC1_GMASIZE) == AGP_I830_GCC1_GMASIZE_64) return 64 * 1024 * 1024; else return 128 * 1024 * 1024; } } static int agp_i810_set_aperture(device_t dev, u_int32_t aperture) { struct agp_i810_softc *sc = device_get_softc(dev); u_int16_t miscc; if ( sc->chiptype == CHIP_I810 ) { /* * Double check for sanity. */ if (aperture != 32 * 1024 * 1024 && aperture != 64 * 1024 * 1024) { device_printf(dev, "bad aperture size %d\n", aperture); return EINVAL; } miscc = pci_read_config(sc->bdev, AGP_I810_MISCC, 2); miscc &= ~AGP_I810_MISCC_WINSIZE; if (aperture == 32 * 1024 * 1024) miscc |= AGP_I810_MISCC_WINSIZE_32; else miscc |= AGP_I810_MISCC_WINSIZE_64; pci_write_config(sc->bdev, AGP_I810_MISCC, miscc, 2); } else { /* I830 */ unsigned int gcc1; if (aperture != 64 * 1024 * 1024 && aperture != 128 * 1024 * 1024) { device_printf(dev, "bad aperture size %d\n", aperture); return EINVAL; } gcc1 = pci_read_config(sc->bdev, AGP_I830_GCC1, 2); gcc1 &= ~AGP_I830_GCC1_GMASIZE; if (aperture == 64 * 1024 * 1024) gcc1 |= AGP_I830_GCC1_GMASIZE_64; else gcc1 |= AGP_I830_GCC1_GMASIZE_128; pci_write_config(sc->bdev, AGP_I830_GCC1, gcc1, 2); } return 0; } static int agp_i810_bind_page(device_t dev, int offset, vm_offset_t physical) { struct agp_i810_softc *sc = device_get_softc(dev); if (offset < 0 || offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT)) { device_printf(dev, "failed: offset is 0x%08x, shift is %d, entries is %d\n", offset, AGP_PAGE_SHIFT, sc->gatt->ag_entries); return EINVAL; } if ( sc->chiptype == CHIP_I830 ) { if ( (offset >> AGP_PAGE_SHIFT) < sc->stolen ) { device_printf(dev, "trying to bind into stolen memory"); return EINVAL; } } WRITE4(AGP_I810_GTT + (offset >> AGP_PAGE_SHIFT) * 4, physical | 1); return 0; } static int agp_i810_unbind_page(device_t dev, int offset) { struct agp_i810_softc *sc = device_get_softc(dev); if (offset < 0 || offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT)) return EINVAL; if ( sc->chiptype == CHIP_I830 ) { if ( (offset >> AGP_PAGE_SHIFT) < sc->stolen ) { device_printf(dev, "trying to unbind from stolen memory"); return EINVAL; } } WRITE4(AGP_I810_GTT + (offset >> AGP_PAGE_SHIFT) * 4, 0); return 0; } /* * Writing via memory mapped registers already flushes all TLBs. */ static void agp_i810_flush_tlb(device_t dev) { } static int agp_i810_enable(device_t dev, u_int32_t mode) { return 0; } static struct agp_memory * agp_i810_alloc_memory(device_t dev, int type, vm_size_t size) { struct agp_i810_softc *sc = device_get_softc(dev); struct agp_memory *mem; if ((size & (AGP_PAGE_SIZE - 1)) != 0) return 0; if (sc->agp.as_allocated + size > sc->agp.as_maxmem) return 0; if (type == 1) { /* * Mapping local DRAM into GATT. */ if ( sc->chiptype == CHIP_I830 ) return 0; if (size != sc->dcache_size) return 0; } else if (type == 2) { /* * Bogus mapping of a single page for the hardware cursor. */ if (size != AGP_PAGE_SIZE) return 0; } mem = malloc(sizeof *mem, M_AGP, M_WAITOK); mem->am_id = sc->agp.as_nextid++; mem->am_size = size; mem->am_type = type; if (type != 1) mem->am_obj = vm_object_allocate(OBJT_DEFAULT, atop(round_page(size))); else mem->am_obj = 0; if (type == 2) { /* * Allocate and wire down the page now so that we can * get its physical address. */ vm_page_t m; m = vm_page_grab(mem->am_obj, 0, VM_ALLOC_ZERO|VM_ALLOC_RETRY); if ((m->flags & PG_ZERO) == 0) vm_page_zero_fill(m); vm_page_wire(m); mem->am_physical = VM_PAGE_TO_PHYS(m); vm_page_wakeup(m); } else { mem->am_physical = 0; } mem->am_offset = 0; mem->am_is_bound = 0; TAILQ_INSERT_TAIL(&sc->agp.as_memory, mem, am_link); sc->agp.as_allocated += size; return mem; } static int agp_i810_free_memory(device_t dev, struct agp_memory *mem) { struct agp_i810_softc *sc = device_get_softc(dev); if (mem->am_is_bound) return EBUSY; if (mem->am_type == 2) { /* * Unwire the page which we wired in alloc_memory. */ vm_page_t m = vm_page_lookup(mem->am_obj, 0); vm_page_unwire(m, 0); } sc->agp.as_allocated -= mem->am_size; TAILQ_REMOVE(&sc->agp.as_memory, mem, am_link); if (mem->am_obj) vm_object_deallocate(mem->am_obj); free(mem, M_AGP); return 0; } static int agp_i810_bind_memory(device_t dev, struct agp_memory *mem, vm_offset_t offset) { struct agp_i810_softc *sc = device_get_softc(dev); vm_offset_t i; if (mem->am_type != 1) return agp_generic_bind_memory(dev, mem, offset); if ( sc->chiptype == CHIP_I830 ) return EINVAL; for (i = 0; i < mem->am_size; i += AGP_PAGE_SIZE) { WRITE4(AGP_I810_GTT + (offset >> AGP_PAGE_SHIFT) * 4, i | 3); } return 0; } static int agp_i810_unbind_memory(device_t dev, struct agp_memory *mem) { struct agp_i810_softc *sc = device_get_softc(dev); vm_offset_t i; if (mem->am_type != 1) return agp_generic_unbind_memory(dev, mem); if ( sc->chiptype == CHIP_I830 ) return EINVAL; for (i = 0; i < mem->am_size; i += AGP_PAGE_SIZE) WRITE4(AGP_I810_GTT + (i >> AGP_PAGE_SHIFT) * 4, 0); return 0; } static device_method_t agp_i810_methods[] = { /* Device interface */ DEVMETHOD(device_probe, agp_i810_probe), DEVMETHOD(device_attach, agp_i810_attach), DEVMETHOD(device_detach, agp_i810_detach), DEVMETHOD(device_shutdown, bus_generic_shutdown), DEVMETHOD(device_suspend, bus_generic_suspend), DEVMETHOD(device_resume, bus_generic_resume), /* AGP interface */ DEVMETHOD(agp_get_aperture, agp_i810_get_aperture), DEVMETHOD(agp_set_aperture, agp_i810_set_aperture), DEVMETHOD(agp_bind_page, agp_i810_bind_page), DEVMETHOD(agp_unbind_page, agp_i810_unbind_page), DEVMETHOD(agp_flush_tlb, agp_i810_flush_tlb), DEVMETHOD(agp_enable, agp_i810_enable), DEVMETHOD(agp_alloc_memory, agp_i810_alloc_memory), DEVMETHOD(agp_free_memory, agp_i810_free_memory), DEVMETHOD(agp_bind_memory, agp_i810_bind_memory), DEVMETHOD(agp_unbind_memory, agp_i810_unbind_memory), { 0, 0 } }; static driver_t agp_i810_driver = { "agp", agp_i810_methods, sizeof(struct agp_i810_softc), }; static devclass_t agp_devclass; DRIVER_MODULE(agp_i810, pci, agp_i810_driver, agp_devclass, 0, 0);