/* * Intel GTT (Graphics Translation Table) routines * * Caveat: This driver implements the linux agp interface, but this is far from * a agp driver! GTT support ended up here for purely historical reasons: The * old userspace intel graphics drivers needed an interface to map memory into * the GTT. And the drm provides a default interface for graphic devices sitting * on an agp port. So it made sense to fake the GTT support as an agp port to * avoid having to create a new api. * * With gem this does not make much sense anymore, just needlessly complicates * the code. But as long as the old graphics stack is still support, it's stuck * here. * * /fairy-tale-mode off */ /* * If we have Intel graphics, we're not going to have anything other than * an Intel IOMMU. So make the correct use of the PCI DMA API contingent * on the Intel IOMMU support (CONFIG_DMAR). * Only newer chipsets need to bother with this, of course. */ #ifdef CONFIG_DMAR #define USE_PCI_DMA_API 1 #endif static const struct aper_size_info_fixed intel_i810_sizes[] = { {64, 16384, 4}, /* The 32M mode still requires a 64k gatt */ {32, 8192, 4} }; #define AGP_DCACHE_MEMORY 1 #define AGP_PHYS_MEMORY 2 #define INTEL_AGP_CACHED_MEMORY 3 static struct gatt_mask intel_i810_masks[] = { {.mask = I810_PTE_VALID, .type = 0}, {.mask = (I810_PTE_VALID | I810_PTE_LOCAL), .type = AGP_DCACHE_MEMORY}, {.mask = I810_PTE_VALID, .type = 0}, {.mask = I810_PTE_VALID | I830_PTE_SYSTEM_CACHED, .type = INTEL_AGP_CACHED_MEMORY} }; static struct _intel_private { struct pci_dev *pcidev; /* device one */ u8 __iomem *registers; u32 __iomem *gtt; /* I915G */ int num_dcache_entries; /* gtt_entries is the number of gtt entries that are already mapped * to stolen memory. Stolen memory is larger than the memory mapped * through gtt_entries, as it includes some reserved space for the BIOS * popup and for the GTT. */ int gtt_entries; /* i830+ */ int gtt_total_size; union { void __iomem *i9xx_flush_page; void *i8xx_flush_page; }; struct page *i8xx_page; struct resource ifp_resource; int resource_valid; } intel_private; #ifdef USE_PCI_DMA_API static int intel_agp_map_page(struct page *page, dma_addr_t *ret) { *ret = pci_map_page(intel_private.pcidev, page, 0, PAGE_SIZE, PCI_DMA_BIDIRECTIONAL); if (pci_dma_mapping_error(intel_private.pcidev, *ret)) return -EINVAL; return 0; } static void intel_agp_unmap_page(struct page *page, dma_addr_t dma) { pci_unmap_page(intel_private.pcidev, dma, PAGE_SIZE, PCI_DMA_BIDIRECTIONAL); } static void intel_agp_free_sglist(struct agp_memory *mem) { struct sg_table st; st.sgl = mem->sg_list; st.orig_nents = st.nents = mem->page_count; sg_free_table(&st); mem->sg_list = NULL; mem->num_sg = 0; } static int intel_agp_map_memory(struct agp_memory *mem) { struct sg_table st; struct scatterlist *sg; int i; DBG("try mapping %lu pages\n", (unsigned long)mem->page_count); if (sg_alloc_table(&st, mem->page_count, GFP_KERNEL)) return -ENOMEM; mem->sg_list = sg = st.sgl; for (i = 0 ; i < mem->page_count; i++, sg = sg_next(sg)) sg_set_page(sg, mem->pages[i], PAGE_SIZE, 0); mem->num_sg = pci_map_sg(intel_private.pcidev, mem->sg_list, mem->page_count, PCI_DMA_BIDIRECTIONAL); if (unlikely(!mem->num_sg)) { intel_agp_free_sglist(mem); return -ENOMEM; } return 0; } static void intel_agp_unmap_memory(struct agp_memory *mem) { DBG("try unmapping %lu pages\n", (unsigned long)mem->page_count); pci_unmap_sg(intel_private.pcidev, mem->sg_list, mem->page_count, PCI_DMA_BIDIRECTIONAL); intel_agp_free_sglist(mem); } static void intel_agp_insert_sg_entries(struct agp_memory *mem, off_t pg_start, int mask_type) { struct scatterlist *sg; int i, j; j = pg_start; WARN_ON(!mem->num_sg); if (mem->num_sg == mem->page_count) { for_each_sg(mem->sg_list, sg, mem->page_count, i) { writel(agp_bridge->driver->mask_memory(agp_bridge, sg_dma_address(sg), mask_type), intel_private.gtt+j); j++; } } else { /* sg may merge pages, but we have to separate * per-page addr for GTT */ unsigned int len, m; for_each_sg(mem->sg_list, sg, mem->num_sg, i) { len = sg_dma_len(sg) / PAGE_SIZE; for (m = 0; m < len; m++) { writel(agp_bridge->driver->mask_memory(agp_bridge, sg_dma_address(sg) + m * PAGE_SIZE, mask_type), intel_private.gtt+j); j++; } } } readl(intel_private.gtt+j-1); } #else static void intel_agp_insert_sg_entries(struct agp_memory *mem, off_t pg_start, int mask_type) { int i, j; u32 cache_bits = 0; if (agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_SANDYBRIDGE_HB || agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_SANDYBRIDGE_M_HB) { cache_bits = I830_PTE_SYSTEM_CACHED; } for (i = 0, j = pg_start; i < mem->page_count; i++, j++) { writel(agp_bridge->driver->mask_memory(agp_bridge, page_to_phys(mem->pages[i]), mask_type), intel_private.gtt+j); } readl(intel_private.gtt+j-1); } #endif static int intel_i810_fetch_size(void) { u32 smram_miscc; struct aper_size_info_fixed *values; pci_read_config_dword(agp_bridge->dev, I810_SMRAM_MISCC, &smram_miscc); values = A_SIZE_FIX(agp_bridge->driver->aperture_sizes); if ((smram_miscc & I810_GMS) == I810_GMS_DISABLE) { dev_warn(&agp_bridge->dev->dev, "i810 is disabled\n"); return 0; } if ((smram_miscc & I810_GFX_MEM_WIN_SIZE) == I810_GFX_MEM_WIN_32M) { agp_bridge->current_size = (void *) (values + 1); agp_bridge->aperture_size_idx = 1; return values[1].size; } else { agp_bridge->current_size = (void *) (values); agp_bridge->aperture_size_idx = 0; return values[0].size; } return 0; } static int intel_i810_configure(void) { struct aper_size_info_fixed *current_size; u32 temp; int i; current_size = A_SIZE_FIX(agp_bridge->current_size); if (!intel_private.registers) { pci_read_config_dword(intel_private.pcidev, I810_MMADDR, &temp); temp &= 0xfff80000; intel_private.registers = ioremap(temp, 128 * 4096); if (!intel_private.registers) { dev_err(&intel_private.pcidev->dev, "can't remap memory\n"); return -ENOMEM; } } if ((readl(intel_private.registers+I810_DRAM_CTL) & I810_DRAM_ROW_0) == I810_DRAM_ROW_0_SDRAM) { /* This will need to be dynamically assigned */ dev_info(&intel_private.pcidev->dev, "detected 4MB dedicated video ram\n"); intel_private.num_dcache_entries = 1024; } pci_read_config_dword(intel_private.pcidev, I810_GMADDR, &temp); agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK); writel(agp_bridge->gatt_bus_addr | I810_PGETBL_ENABLED, intel_private.registers+I810_PGETBL_CTL); readl(intel_private.registers+I810_PGETBL_CTL); /* PCI Posting. */ if (agp_bridge->driver->needs_scratch_page) { for (i = 0; i < current_size->num_entries; i++) { writel(agp_bridge->scratch_page, intel_private.registers+I810_PTE_BASE+(i*4)); } readl(intel_private.registers+I810_PTE_BASE+((i-1)*4)); /* PCI posting. */ } global_cache_flush(); return 0; } static void intel_i810_cleanup(void) { writel(0, intel_private.registers+I810_PGETBL_CTL); readl(intel_private.registers); /* PCI Posting. */ iounmap(intel_private.registers); } static void intel_i810_agp_enable(struct agp_bridge_data *bridge, u32 mode) { return; } /* Exists to support ARGB cursors */ static struct page *i8xx_alloc_pages(void) { struct page *page; page = alloc_pages(GFP_KERNEL | GFP_DMA32, 2); if (page == NULL) return NULL; if (set_pages_uc(page, 4) < 0) { set_pages_wb(page, 4); __free_pages(page, 2); return NULL; } get_page(page); atomic_inc(&agp_bridge->current_memory_agp); return page; } static void i8xx_destroy_pages(struct page *page) { if (page == NULL) return; set_pages_wb(page, 4); put_page(page); __free_pages(page, 2); atomic_dec(&agp_bridge->current_memory_agp); } static int intel_i830_type_to_mask_type(struct agp_bridge_data *bridge, int type) { if (type < AGP_USER_TYPES) return type; else if (type == AGP_USER_CACHED_MEMORY) return INTEL_AGP_CACHED_MEMORY; else return 0; } static int intel_i810_insert_entries(struct agp_memory *mem, off_t pg_start, int type) { int i, j, num_entries; void *temp; int ret = -EINVAL; int mask_type; if (mem->page_count == 0) goto out; temp = agp_bridge->current_size; num_entries = A_SIZE_FIX(temp)->num_entries; if ((pg_start + mem->page_count) > num_entries) goto out_err; for (j = pg_start; j < (pg_start + mem->page_count); j++) { if (!PGE_EMPTY(agp_bridge, readl(agp_bridge->gatt_table+j))) { ret = -EBUSY; goto out_err; } } if (type != mem->type) goto out_err; mask_type = agp_bridge->driver->agp_type_to_mask_type(agp_bridge, type); switch (mask_type) { case AGP_DCACHE_MEMORY: if (!mem->is_flushed) global_cache_flush(); for (i = pg_start; i < (pg_start + mem->page_count); i++) { writel((i*4096)|I810_PTE_LOCAL|I810_PTE_VALID, intel_private.registers+I810_PTE_BASE+(i*4)); } readl(intel_private.registers+I810_PTE_BASE+((i-1)*4)); break; case AGP_PHYS_MEMORY: case AGP_NORMAL_MEMORY: if (!mem->is_flushed) global_cache_flush(); for (i = 0, j = pg_start; i < mem->page_count; i++, j++) { writel(agp_bridge->driver->mask_memory(agp_bridge, page_to_phys(mem->pages[i]), mask_type), intel_private.registers+I810_PTE_BASE+(j*4)); } readl(intel_private.registers+I810_PTE_BASE+((j-1)*4)); break; default: goto out_err; } out: ret = 0; out_err: mem->is_flushed = true; return ret; } static int intel_i810_remove_entries(struct agp_memory *mem, off_t pg_start, int type) { int i; if (mem->page_count == 0) return 0; for (i = pg_start; i < (mem->page_count + pg_start); i++) { writel(agp_bridge->scratch_page, intel_private.registers+I810_PTE_BASE+(i*4)); } readl(intel_private.registers+I810_PTE_BASE+((i-1)*4)); return 0; } /* * The i810/i830 requires a physical address to program its mouse * pointer into hardware. * However the Xserver still writes to it through the agp aperture. */ static struct agp_memory *alloc_agpphysmem_i8xx(size_t pg_count, int type) { struct agp_memory *new; struct page *page; switch (pg_count) { case 1: page = agp_bridge->driver->agp_alloc_page(agp_bridge); break; case 4: /* kludge to get 4 physical pages for ARGB cursor */ page = i8xx_alloc_pages(); break; default: return NULL; } if (page == NULL) return NULL; new = agp_create_memory(pg_count); if (new == NULL) return NULL; new->pages[0] = page; if (pg_count == 4) { /* kludge to get 4 physical pages for ARGB cursor */ new->pages[1] = new->pages[0] + 1; new->pages[2] = new->pages[1] + 1; new->pages[3] = new->pages[2] + 1; } new->page_count = pg_count; new->num_scratch_pages = pg_count; new->type = AGP_PHYS_MEMORY; new->physical = page_to_phys(new->pages[0]); return new; } static struct agp_memory *intel_i810_alloc_by_type(size_t pg_count, int type) { struct agp_memory *new; if (type == AGP_DCACHE_MEMORY) { if (pg_count != intel_private.num_dcache_entries) return NULL; new = agp_create_memory(1); if (new == NULL) return NULL; new->type = AGP_DCACHE_MEMORY; new->page_count = pg_count; new->num_scratch_pages = 0; agp_free_page_array(new); return new; } if (type == AGP_PHYS_MEMORY) return alloc_agpphysmem_i8xx(pg_count, type); return NULL; } static void intel_i810_free_by_type(struct agp_memory *curr) { agp_free_key(curr->key); if (curr->type == AGP_PHYS_MEMORY) { if (curr->page_count == 4) i8xx_destroy_pages(curr->pages[0]); else { agp_bridge->driver->agp_destroy_page(curr->pages[0], AGP_PAGE_DESTROY_UNMAP); agp_bridge->driver->agp_destroy_page(curr->pages[0], AGP_PAGE_DESTROY_FREE); } agp_free_page_array(curr); } kfree(curr); } static unsigned long intel_i810_mask_memory(struct agp_bridge_data *bridge, dma_addr_t addr, int type) { /* Type checking must be done elsewhere */ return addr | bridge->driver->masks[type].mask; } static struct aper_size_info_fixed intel_i830_sizes[] = { {128, 32768, 5}, /* The 64M mode still requires a 128k gatt */ {64, 16384, 5}, {256, 65536, 6}, {512, 131072, 7}, }; static void intel_i830_init_gtt_entries(void) { u16 gmch_ctrl; int gtt_entries = 0; u8 rdct; int local = 0; static const int ddt[4] = { 0, 16, 32, 64 }; int size; /* reserved space (in kb) at the top of stolen memory */ pci_read_config_word(agp_bridge->dev, I830_GMCH_CTRL, &gmch_ctrl); if (IS_I965) { u32 pgetbl_ctl; pgetbl_ctl = readl(intel_private.registers+I810_PGETBL_CTL); /* The 965 has a field telling us the size of the GTT, * which may be larger than what is necessary to map the * aperture. */ switch (pgetbl_ctl & I965_PGETBL_SIZE_MASK) { case I965_PGETBL_SIZE_128KB: size = 128; break; case I965_PGETBL_SIZE_256KB: size = 256; break; case I965_PGETBL_SIZE_512KB: size = 512; break; case I965_PGETBL_SIZE_1MB: size = 1024; break; case I965_PGETBL_SIZE_2MB: size = 2048; break; case I965_PGETBL_SIZE_1_5MB: size = 1024 + 512; break; default: dev_info(&intel_private.pcidev->dev, "unknown page table size, assuming 512KB\n"); size = 512; } size += 4; /* add in BIOS popup space */ } else if (IS_G33 && !IS_PINEVIEW) { /* G33's GTT size defined in gmch_ctrl */ switch (gmch_ctrl & G33_PGETBL_SIZE_MASK) { case G33_PGETBL_SIZE_1M: size = 1024; break; case G33_PGETBL_SIZE_2M: size = 2048; break; default: dev_info(&agp_bridge->dev->dev, "unknown page table size 0x%x, assuming 512KB\n", (gmch_ctrl & G33_PGETBL_SIZE_MASK)); size = 512; } size += 4; } else if (IS_G4X || IS_PINEVIEW) { /* On 4 series hardware, GTT stolen is separate from graphics * stolen, ignore it in stolen gtt entries counting. However, * 4KB of the stolen memory doesn't get mapped to the GTT. */ size = 4; } else { /* On previous hardware, the GTT size was just what was * required to map the aperture. */ size = agp_bridge->driver->fetch_size() + 4; } if (agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82830_HB || agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82845G_HB) { switch (gmch_ctrl & I830_GMCH_GMS_MASK) { case I830_GMCH_GMS_STOLEN_512: gtt_entries = KB(512) - KB(size); break; case I830_GMCH_GMS_STOLEN_1024: gtt_entries = MB(1) - KB(size); break; case I830_GMCH_GMS_STOLEN_8192: gtt_entries = MB(8) - KB(size); break; case I830_GMCH_GMS_LOCAL: rdct = readb(intel_private.registers+I830_RDRAM_CHANNEL_TYPE); gtt_entries = (I830_RDRAM_ND(rdct) + 1) * MB(ddt[I830_RDRAM_DDT(rdct)]); local = 1; break; default: gtt_entries = 0; break; } } else if (agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_SANDYBRIDGE_HB || agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_SANDYBRIDGE_M_HB) { /* * SandyBridge has new memory control reg at 0x50.w */ u16 snb_gmch_ctl; pci_read_config_word(intel_private.pcidev, SNB_GMCH_CTRL, &snb_gmch_ctl); switch (snb_gmch_ctl & SNB_GMCH_GMS_STOLEN_MASK) { case SNB_GMCH_GMS_STOLEN_32M: gtt_entries = MB(32) - KB(size); break; case SNB_GMCH_GMS_STOLEN_64M: gtt_entries = MB(64) - KB(size); break; case SNB_GMCH_GMS_STOLEN_96M: gtt_entries = MB(96) - KB(size); break; case SNB_GMCH_GMS_STOLEN_128M: gtt_entries = MB(128) - KB(size); break; case SNB_GMCH_GMS_STOLEN_160M: gtt_entries = MB(160) - KB(size); break; case SNB_GMCH_GMS_STOLEN_192M: gtt_entries = MB(192) - KB(size); break; case SNB_GMCH_GMS_STOLEN_224M: gtt_entries = MB(224) - KB(size); break; case SNB_GMCH_GMS_STOLEN_256M: gtt_entries = MB(256) - KB(size); break; case SNB_GMCH_GMS_STOLEN_288M: gtt_entries = MB(288) - KB(size); break; case SNB_GMCH_GMS_STOLEN_320M: gtt_entries = MB(320) - KB(size); break; case SNB_GMCH_GMS_STOLEN_352M: gtt_entries = MB(352) - KB(size); break; case SNB_GMCH_GMS_STOLEN_384M: gtt_entries = MB(384) - KB(size); break; case SNB_GMCH_GMS_STOLEN_416M: gtt_entries = MB(416) - KB(size); break; case SNB_GMCH_GMS_STOLEN_448M: gtt_entries = MB(448) - KB(size); break; case SNB_GMCH_GMS_STOLEN_480M: gtt_entries = MB(480) - KB(size); break; case SNB_GMCH_GMS_STOLEN_512M: gtt_entries = MB(512) - KB(size); break; } } else { switch (gmch_ctrl & I855_GMCH_GMS_MASK) { case I855_GMCH_GMS_STOLEN_1M: gtt_entries = MB(1) - KB(size); break; case I855_GMCH_GMS_STOLEN_4M: gtt_entries = MB(4) - KB(size); break; case I855_GMCH_GMS_STOLEN_8M: gtt_entries = MB(8) - KB(size); break; case I855_GMCH_GMS_STOLEN_16M: gtt_entries = MB(16) - KB(size); break; case I855_GMCH_GMS_STOLEN_32M: gtt_entries = MB(32) - KB(size); break; case I915_GMCH_GMS_STOLEN_48M: /* Check it's really I915G */ if (IS_I915 || IS_I965 || IS_G33 || IS_G4X) gtt_entries = MB(48) - KB(size); else gtt_entries = 0; break; case I915_GMCH_GMS_STOLEN_64M: /* Check it's really I915G */ if (IS_I915 || IS_I965 || IS_G33 || IS_G4X) gtt_entries = MB(64) - KB(size); else gtt_entries = 0; break; case G33_GMCH_GMS_STOLEN_128M: if (IS_G33 || IS_I965 || IS_G4X) gtt_entries = MB(128) - KB(size); else gtt_entries = 0; break; case G33_GMCH_GMS_STOLEN_256M: if (IS_G33 || IS_I965 || IS_G4X) gtt_entries = MB(256) - KB(size); else gtt_entries = 0; break; case INTEL_GMCH_GMS_STOLEN_96M: if (IS_I965 || IS_G4X) gtt_entries = MB(96) - KB(size); else gtt_entries = 0; break; case INTEL_GMCH_GMS_STOLEN_160M: if (IS_I965 || IS_G4X) gtt_entries = MB(160) - KB(size); else gtt_entries = 0; break; case INTEL_GMCH_GMS_STOLEN_224M: if (IS_I965 || IS_G4X) gtt_entries = MB(224) - KB(size); else gtt_entries = 0; break; case INTEL_GMCH_GMS_STOLEN_352M: if (IS_I965 || IS_G4X) gtt_entries = MB(352) - KB(size); else gtt_entries = 0; break; default: gtt_entries = 0; break; } } if (gtt_entries > 0) { dev_info(&agp_bridge->dev->dev, "detected %dK %s memory\n", gtt_entries / KB(1), local ? "local" : "stolen"); gtt_entries /= KB(4); } else { dev_info(&agp_bridge->dev->dev, "no pre-allocated video memory detected\n"); gtt_entries = 0; } intel_private.gtt_entries = gtt_entries; } static void intel_i830_fini_flush(void) { kunmap(intel_private.i8xx_page); intel_private.i8xx_flush_page = NULL; unmap_page_from_agp(intel_private.i8xx_page); __free_page(intel_private.i8xx_page); intel_private.i8xx_page = NULL; } static void intel_i830_setup_flush(void) { /* return if we've already set the flush mechanism up */ if (intel_private.i8xx_page) return; intel_private.i8xx_page = alloc_page(GFP_KERNEL | __GFP_ZERO | GFP_DMA32); if (!intel_private.i8xx_page) return; intel_private.i8xx_flush_page = kmap(intel_private.i8xx_page); if (!intel_private.i8xx_flush_page) intel_i830_fini_flush(); } /* The chipset_flush interface needs to get data that has already been * flushed out of the CPU all the way out to main memory, because the GPU * doesn't snoop those buffers. * * The 8xx series doesn't have the same lovely interface for flushing the * chipset write buffers that the later chips do. According to the 865 * specs, it's 64 octwords, or 1KB. So, to get those previous things in * that buffer out, we just fill 1KB and clflush it out, on the assumption * that it'll push whatever was in there out. It appears to work. */ static void intel_i830_chipset_flush(struct agp_bridge_data *bridge) { unsigned int *pg = intel_private.i8xx_flush_page; memset(pg, 0, 1024); if (cpu_has_clflush) clflush_cache_range(pg, 1024); else if (wbinvd_on_all_cpus() != 0) printk(KERN_ERR "Timed out waiting for cache flush.\n"); } /* The intel i830 automatically initializes the agp aperture during POST. * Use the memory already set aside for in the GTT. */ static int intel_i830_create_gatt_table(struct agp_bridge_data *bridge) { int page_order; struct aper_size_info_fixed *size; int num_entries; u32 temp; size = agp_bridge->current_size; page_order = size->page_order; num_entries = size->num_entries; agp_bridge->gatt_table_real = NULL; pci_read_config_dword(intel_private.pcidev, I810_MMADDR, &temp); temp &= 0xfff80000; intel_private.registers = ioremap(temp, 128 * 4096); if (!intel_private.registers) return -ENOMEM; temp = readl(intel_private.registers+I810_PGETBL_CTL) & 0xfffff000; global_cache_flush(); /* FIXME: ?? */ /* we have to call this as early as possible after the MMIO base address is known */ intel_i830_init_gtt_entries(); if (intel_private.gtt_entries == 0) { iounmap(intel_private.registers); return -ENOMEM; } agp_bridge->gatt_table = NULL; agp_bridge->gatt_bus_addr = temp; return 0; } /* Return the gatt table to a sane state. Use the top of stolen * memory for the GTT. */ static int intel_i830_free_gatt_table(struct agp_bridge_data *bridge) { return 0; } static int intel_i830_fetch_size(void) { u16 gmch_ctrl; struct aper_size_info_fixed *values; values = A_SIZE_FIX(agp_bridge->driver->aperture_sizes); if (agp_bridge->dev->device != PCI_DEVICE_ID_INTEL_82830_HB && agp_bridge->dev->device != PCI_DEVICE_ID_INTEL_82845G_HB) { /* 855GM/852GM/865G has 128MB aperture size */ agp_bridge->current_size = (void *) values; agp_bridge->aperture_size_idx = 0; return values[0].size; } pci_read_config_word(agp_bridge->dev, I830_GMCH_CTRL, &gmch_ctrl); if ((gmch_ctrl & I830_GMCH_MEM_MASK) == I830_GMCH_MEM_128M) { agp_bridge->current_size = (void *) values; agp_bridge->aperture_size_idx = 0; return values[0].size; } else { agp_bridge->current_size = (void *) (values + 1); agp_bridge->aperture_size_idx = 1; return values[1].size; } return 0; } static int intel_i830_configure(void) { struct aper_size_info_fixed *current_size; u32 temp; u16 gmch_ctrl; int i; current_size = A_SIZE_FIX(agp_bridge->current_size); pci_read_config_dword(intel_private.pcidev, I810_GMADDR, &temp); agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK); pci_read_config_word(agp_bridge->dev, I830_GMCH_CTRL, &gmch_ctrl); gmch_ctrl |= I830_GMCH_ENABLED; pci_write_config_word(agp_bridge->dev, I830_GMCH_CTRL, gmch_ctrl); writel(agp_bridge->gatt_bus_addr|I810_PGETBL_ENABLED, intel_private.registers+I810_PGETBL_CTL); readl(intel_private.registers+I810_PGETBL_CTL); /* PCI Posting. */ if (agp_bridge->driver->needs_scratch_page) { for (i = intel_private.gtt_entries; i < current_size->num_entries; i++) { writel(agp_bridge->scratch_page, intel_private.registers+I810_PTE_BASE+(i*4)); } readl(intel_private.registers+I810_PTE_BASE+((i-1)*4)); /* PCI Posting. */ } global_cache_flush(); intel_i830_setup_flush(); return 0; } static void intel_i830_cleanup(void) { iounmap(intel_private.registers); } static int intel_i830_insert_entries(struct agp_memory *mem, off_t pg_start, int type) { int i, j, num_entries; void *temp; int ret = -EINVAL; int mask_type; if (mem->page_count == 0) goto out; temp = agp_bridge->current_size; num_entries = A_SIZE_FIX(temp)->num_entries; if (pg_start < intel_private.gtt_entries) { dev_printk(KERN_DEBUG, &intel_private.pcidev->dev, "pg_start == 0x%.8lx, intel_private.gtt_entries == 0x%.8x\n", pg_start, intel_private.gtt_entries); dev_info(&intel_private.pcidev->dev, "trying to insert into local/stolen memory\n"); goto out_err; } if ((pg_start + mem->page_count) > num_entries) goto out_err; /* The i830 can't check the GTT for entries since its read only, * depend on the caller to make the correct offset decisions. */ if (type != mem->type) goto out_err; mask_type = agp_bridge->driver->agp_type_to_mask_type(agp_bridge, type); if (mask_type != 0 && mask_type != AGP_PHYS_MEMORY && mask_type != INTEL_AGP_CACHED_MEMORY) goto out_err; if (!mem->is_flushed) global_cache_flush(); for (i = 0, j = pg_start; i < mem->page_count; i++, j++) { writel(agp_bridge->driver->mask_memory(agp_bridge, page_to_phys(mem->pages[i]), mask_type), intel_private.registers+I810_PTE_BASE+(j*4)); } readl(intel_private.registers+I810_PTE_BASE+((j-1)*4)); out: ret = 0; out_err: mem->is_flushed = true; return ret; } static int intel_i830_remove_entries(struct agp_memory *mem, off_t pg_start, int type) { int i; if (mem->page_count == 0) return 0; if (pg_start < intel_private.gtt_entries) { dev_info(&intel_private.pcidev->dev, "trying to disable local/stolen memory\n"); return -EINVAL; } for (i = pg_start; i < (mem->page_count + pg_start); i++) { writel(agp_bridge->scratch_page, intel_private.registers+I810_PTE_BASE+(i*4)); } readl(intel_private.registers+I810_PTE_BASE+((i-1)*4)); return 0; } static struct agp_memory *intel_i830_alloc_by_type(size_t pg_count, int type) { if (type == AGP_PHYS_MEMORY) return alloc_agpphysmem_i8xx(pg_count, type); /* always return NULL for other allocation types for now */ return NULL; } static int intel_alloc_chipset_flush_resource(void) { int ret; ret = pci_bus_alloc_resource(agp_bridge->dev->bus, &intel_private.ifp_resource, PAGE_SIZE, PAGE_SIZE, PCIBIOS_MIN_MEM, 0, pcibios_align_resource, agp_bridge->dev); return ret; } static void intel_i915_setup_chipset_flush(void) { int ret; u32 temp; pci_read_config_dword(agp_bridge->dev, I915_IFPADDR, &temp); if (!(temp & 0x1)) { intel_alloc_chipset_flush_resource(); intel_private.resource_valid = 1; pci_write_config_dword(agp_bridge->dev, I915_IFPADDR, (intel_private.ifp_resource.start & 0xffffffff) | 0x1); } else { temp &= ~1; intel_private.resource_valid = 1; intel_private.ifp_resource.start = temp; intel_private.ifp_resource.end = temp + PAGE_SIZE; ret = request_resource(&iomem_resource, &intel_private.ifp_resource); /* some BIOSes reserve this area in a pnp some don't */ if (ret) intel_private.resource_valid = 0; } } static void intel_i965_g33_setup_chipset_flush(void) { u32 temp_hi, temp_lo; int ret; pci_read_config_dword(agp_bridge->dev, I965_IFPADDR + 4, &temp_hi); pci_read_config_dword(agp_bridge->dev, I965_IFPADDR, &temp_lo); if (!(temp_lo & 0x1)) { intel_alloc_chipset_flush_resource(); intel_private.resource_valid = 1; pci_write_config_dword(agp_bridge->dev, I965_IFPADDR + 4, upper_32_bits(intel_private.ifp_resource.start)); pci_write_config_dword(agp_bridge->dev, I965_IFPADDR, (intel_private.ifp_resource.start & 0xffffffff) | 0x1); } else { u64 l64; temp_lo &= ~0x1; l64 = ((u64)temp_hi << 32) | temp_lo; intel_private.resource_valid = 1; intel_private.ifp_resource.start = l64; intel_private.ifp_resource.end = l64 + PAGE_SIZE; ret = request_resource(&iomem_resource, &intel_private.ifp_resource); /* some BIOSes reserve this area in a pnp some don't */ if (ret) intel_private.resource_valid = 0; } } static void intel_i9xx_setup_flush(void) { /* return if already configured */ if (intel_private.ifp_resource.start) return; if (IS_SNB) return; /* setup a resource for this object */ intel_private.ifp_resource.name = "Intel Flush Page"; intel_private.ifp_resource.flags = IORESOURCE_MEM; /* Setup chipset flush for 915 */ if (IS_I965 || IS_G33 || IS_G4X) { intel_i965_g33_setup_chipset_flush(); } else { intel_i915_setup_chipset_flush(); } if (intel_private.ifp_resource.start) { intel_private.i9xx_flush_page = ioremap_nocache(intel_private.ifp_resource.start, PAGE_SIZE); if (!intel_private.i9xx_flush_page) dev_info(&intel_private.pcidev->dev, "can't ioremap flush page - no chipset flushing"); } } static int intel_i9xx_configure(void) { struct aper_size_info_fixed *current_size; u32 temp; u16 gmch_ctrl; int i; current_size = A_SIZE_FIX(agp_bridge->current_size); pci_read_config_dword(intel_private.pcidev, I915_GMADDR, &temp); agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK); pci_read_config_word(agp_bridge->dev, I830_GMCH_CTRL, &gmch_ctrl); gmch_ctrl |= I830_GMCH_ENABLED; pci_write_config_word(agp_bridge->dev, I830_GMCH_CTRL, gmch_ctrl); writel(agp_bridge->gatt_bus_addr|I810_PGETBL_ENABLED, intel_private.registers+I810_PGETBL_CTL); readl(intel_private.registers+I810_PGETBL_CTL); /* PCI Posting. */ if (agp_bridge->driver->needs_scratch_page) { for (i = intel_private.gtt_entries; i < intel_private.gtt_total_size; i++) { writel(agp_bridge->scratch_page, intel_private.gtt+i); } readl(intel_private.gtt+i-1); /* PCI Posting. */ } global_cache_flush(); intel_i9xx_setup_flush(); return 0; } static void intel_i915_cleanup(void) { if (intel_private.i9xx_flush_page) iounmap(intel_private.i9xx_flush_page); if (intel_private.resource_valid) release_resource(&intel_private.ifp_resource); intel_private.ifp_resource.start = 0; intel_private.resource_valid = 0; iounmap(intel_private.gtt); iounmap(intel_private.registers); } static void intel_i915_chipset_flush(struct agp_bridge_data *bridge) { if (intel_private.i9xx_flush_page) writel(1, intel_private.i9xx_flush_page); } static int intel_i915_insert_entries(struct agp_memory *mem, off_t pg_start, int type) { int num_entries; void *temp; int ret = -EINVAL; int mask_type; if (mem->page_count == 0) goto out; temp = agp_bridge->current_size; num_entries = A_SIZE_FIX(temp)->num_entries; if (pg_start < intel_private.gtt_entries) { dev_printk(KERN_DEBUG, &intel_private.pcidev->dev, "pg_start == 0x%.8lx, intel_private.gtt_entries == 0x%.8x\n", pg_start, intel_private.gtt_entries); dev_info(&intel_private.pcidev->dev, "trying to insert into local/stolen memory\n"); goto out_err; } if ((pg_start + mem->page_count) > num_entries) goto out_err; /* The i915 can't check the GTT for entries since it's read only; * depend on the caller to make the correct offset decisions. */ if (type != mem->type) goto out_err; mask_type = agp_bridge->driver->agp_type_to_mask_type(agp_bridge, type); if (mask_type != 0 && mask_type != AGP_PHYS_MEMORY && mask_type != INTEL_AGP_CACHED_MEMORY) goto out_err; if (!mem->is_flushed) global_cache_flush(); intel_agp_insert_sg_entries(mem, pg_start, mask_type); out: ret = 0; out_err: mem->is_flushed = true; return ret; } static int intel_i915_remove_entries(struct agp_memory *mem, off_t pg_start, int type) { int i; if (mem->page_count == 0) return 0; if (pg_start < intel_private.gtt_entries) { dev_info(&intel_private.pcidev->dev, "trying to disable local/stolen memory\n"); return -EINVAL; } for (i = pg_start; i < (mem->page_count + pg_start); i++) writel(agp_bridge->scratch_page, intel_private.gtt+i); readl(intel_private.gtt+i-1); return 0; } /* Return the aperture size by just checking the resource length. The effect * described in the spec of the MSAC registers is just changing of the * resource size. */ static int intel_i9xx_fetch_size(void) { int num_sizes = ARRAY_SIZE(intel_i830_sizes); int aper_size; /* size in megabytes */ int i; aper_size = pci_resource_len(intel_private.pcidev, 2) / MB(1); for (i = 0; i < num_sizes; i++) { if (aper_size == intel_i830_sizes[i].size) { agp_bridge->current_size = intel_i830_sizes + i; return aper_size; } } return 0; } static int intel_i915_get_gtt_size(void) { int size; if (IS_G33) { u16 gmch_ctrl; /* G33's GTT size defined in gmch_ctrl */ pci_read_config_word(agp_bridge->dev, I830_GMCH_CTRL, &gmch_ctrl); switch (gmch_ctrl & G33_PGETBL_SIZE_MASK) { case G33_PGETBL_SIZE_1M: size = 1024; break; case G33_PGETBL_SIZE_2M: size = 2048; break; default: dev_info(&agp_bridge->dev->dev, "unknown page table size 0x%x, assuming 512KB\n", (gmch_ctrl & G33_PGETBL_SIZE_MASK)); size = 512; } } else { /* On previous hardware, the GTT size was just what was * required to map the aperture. */ size = agp_bridge->driver->fetch_size(); } return KB(size); } /* The intel i915 automatically initializes the agp aperture during POST. * Use the memory already set aside for in the GTT. */ static int intel_i915_create_gatt_table(struct agp_bridge_data *bridge) { int page_order; struct aper_size_info_fixed *size; int num_entries; u32 temp, temp2; int gtt_map_size; size = agp_bridge->current_size; page_order = size->page_order; num_entries = size->num_entries; agp_bridge->gatt_table_real = NULL; pci_read_config_dword(intel_private.pcidev, I915_MMADDR, &temp); pci_read_config_dword(intel_private.pcidev, I915_PTEADDR, &temp2); gtt_map_size = intel_i915_get_gtt_size(); intel_private.gtt = ioremap(temp2, gtt_map_size); if (!intel_private.gtt) return -ENOMEM; intel_private.gtt_total_size = gtt_map_size / 4; temp &= 0xfff80000; intel_private.registers = ioremap(temp, 128 * 4096); if (!intel_private.registers) { iounmap(intel_private.gtt); return -ENOMEM; } temp = readl(intel_private.registers+I810_PGETBL_CTL) & 0xfffff000; global_cache_flush(); /* FIXME: ? */ /* we have to call this as early as possible after the MMIO base address is known */ intel_i830_init_gtt_entries(); if (intel_private.gtt_entries == 0) { iounmap(intel_private.gtt); iounmap(intel_private.registers); return -ENOMEM; } agp_bridge->gatt_table = NULL; agp_bridge->gatt_bus_addr = temp; return 0; } /* * The i965 supports 36-bit physical addresses, but to keep * the format of the GTT the same, the bits that don't fit * in a 32-bit word are shifted down to bits 4..7. * * Gcc is smart enough to notice that "(addr >> 28) & 0xf0" * is always zero on 32-bit architectures, so no need to make * this conditional. */ static unsigned long intel_i965_mask_memory(struct agp_bridge_data *bridge, dma_addr_t addr, int type) { /* Shift high bits down */ addr |= (addr >> 28) & 0xf0; /* Type checking must be done elsewhere */ return addr | bridge->driver->masks[type].mask; } static unsigned long intel_gen6_mask_memory(struct agp_bridge_data *bridge, dma_addr_t addr, int type) { /* Shift high bits down */ addr |= (addr >> 28) & 0xff; /* Type checking must be done elsewhere */ return addr | bridge->driver->masks[type].mask; } static void intel_i965_get_gtt_range(int *gtt_offset, int *gtt_size) { u16 snb_gmch_ctl; switch (agp_bridge->dev->device) { case PCI_DEVICE_ID_INTEL_GM45_HB: case PCI_DEVICE_ID_INTEL_EAGLELAKE_HB: case PCI_DEVICE_ID_INTEL_Q45_HB: case PCI_DEVICE_ID_INTEL_G45_HB: case PCI_DEVICE_ID_INTEL_G41_HB: case PCI_DEVICE_ID_INTEL_B43_HB: case PCI_DEVICE_ID_INTEL_IRONLAKE_D_HB: case PCI_DEVICE_ID_INTEL_IRONLAKE_M_HB: case PCI_DEVICE_ID_INTEL_IRONLAKE_MA_HB: case PCI_DEVICE_ID_INTEL_IRONLAKE_MC2_HB: *gtt_offset = *gtt_size = MB(2); break; case PCI_DEVICE_ID_INTEL_SANDYBRIDGE_HB: case PCI_DEVICE_ID_INTEL_SANDYBRIDGE_M_HB: *gtt_offset = MB(2); pci_read_config_word(intel_private.pcidev, SNB_GMCH_CTRL, &snb_gmch_ctl); switch (snb_gmch_ctl & SNB_GTT_SIZE_MASK) { default: case SNB_GTT_SIZE_0M: printk(KERN_ERR "Bad GTT size mask: 0x%04x.\n", snb_gmch_ctl); *gtt_size = MB(0); break; case SNB_GTT_SIZE_1M: *gtt_size = MB(1); break; case SNB_GTT_SIZE_2M: *gtt_size = MB(2); break; } break; default: *gtt_offset = *gtt_size = KB(512); } } /* The intel i965 automatically initializes the agp aperture during POST. * Use the memory already set aside for in the GTT. */ static int intel_i965_create_gatt_table(struct agp_bridge_data *bridge) { int page_order; struct aper_size_info_fixed *size; int num_entries; u32 temp; int gtt_offset, gtt_size; size = agp_bridge->current_size; page_order = size->page_order; num_entries = size->num_entries; agp_bridge->gatt_table_real = NULL; pci_read_config_dword(intel_private.pcidev, I915_MMADDR, &temp); temp &= 0xfff00000; intel_i965_get_gtt_range(>t_offset, >t_size); intel_private.gtt = ioremap((temp + gtt_offset) , gtt_size); if (!intel_private.gtt) return -ENOMEM; intel_private.gtt_total_size = gtt_size / 4; intel_private.registers = ioremap(temp, 128 * 4096); if (!intel_private.registers) { iounmap(intel_private.gtt); return -ENOMEM; } temp = readl(intel_private.registers+I810_PGETBL_CTL) & 0xfffff000; global_cache_flush(); /* FIXME: ? */ /* we have to call this as early as possible after the MMIO base address is known */ intel_i830_init_gtt_entries(); if (intel_private.gtt_entries == 0) { iounmap(intel_private.gtt); iounmap(intel_private.registers); return -ENOMEM; } agp_bridge->gatt_table = NULL; agp_bridge->gatt_bus_addr = temp; return 0; } static const struct agp_bridge_driver intel_810_driver = { .owner = THIS_MODULE, .aperture_sizes = intel_i810_sizes, .size_type = FIXED_APER_SIZE, .num_aperture_sizes = 2, .needs_scratch_page = true, .configure = intel_i810_configure, .fetch_size = intel_i810_fetch_size, .cleanup = intel_i810_cleanup, .mask_memory = intel_i810_mask_memory, .masks = intel_i810_masks, .agp_enable = intel_i810_agp_enable, .cache_flush = global_cache_flush, .create_gatt_table = agp_generic_create_gatt_table, .free_gatt_table = agp_generic_free_gatt_table, .insert_memory = intel_i810_insert_entries, .remove_memory = intel_i810_remove_entries, .alloc_by_type = intel_i810_alloc_by_type, .free_by_type = intel_i810_free_by_type, .agp_alloc_page = agp_generic_alloc_page, .agp_alloc_pages = agp_generic_alloc_pages, .agp_destroy_page = agp_generic_destroy_page, .agp_destroy_pages = agp_generic_destroy_pages, .agp_type_to_mask_type = agp_generic_type_to_mask_type, }; static const struct agp_bridge_driver intel_830_driver = { .owner = THIS_MODULE, .aperture_sizes = intel_i830_sizes, .size_type = FIXED_APER_SIZE, .num_aperture_sizes = 4, .needs_scratch_page = true, .configure = intel_i830_configure, .fetch_size = intel_i830_fetch_size, .cleanup = intel_i830_cleanup, .mask_memory = intel_i810_mask_memory, .masks = intel_i810_masks, .agp_enable = intel_i810_agp_enable, .cache_flush = global_cache_flush, .create_gatt_table = intel_i830_create_gatt_table, .free_gatt_table = intel_i830_free_gatt_table, .insert_memory = intel_i830_insert_entries, .remove_memory = intel_i830_remove_entries, .alloc_by_type = intel_i830_alloc_by_type, .free_by_type = intel_i810_free_by_type, .agp_alloc_page = agp_generic_alloc_page, .agp_alloc_pages = agp_generic_alloc_pages, .agp_destroy_page = agp_generic_destroy_page, .agp_destroy_pages = agp_generic_destroy_pages, .agp_type_to_mask_type = intel_i830_type_to_mask_type, .chipset_flush = intel_i830_chipset_flush, }; static const struct agp_bridge_driver intel_915_driver = { .owner = THIS_MODULE, .aperture_sizes = intel_i830_sizes, .size_type = FIXED_APER_SIZE, .num_aperture_sizes = 4, .needs_scratch_page = true, .configure = intel_i9xx_configure, .fetch_size = intel_i9xx_fetch_size, .cleanup = intel_i915_cleanup, .mask_memory = intel_i810_mask_memory, .masks = intel_i810_masks, .agp_enable = intel_i810_agp_enable, .cache_flush = global_cache_flush, .create_gatt_table = intel_i915_create_gatt_table, .free_gatt_table = intel_i830_free_gatt_table, .insert_memory = intel_i915_insert_entries, .remove_memory = intel_i915_remove_entries, .alloc_by_type = intel_i830_alloc_by_type, .free_by_type = intel_i810_free_by_type, .agp_alloc_page = agp_generic_alloc_page, .agp_alloc_pages = agp_generic_alloc_pages, .agp_destroy_page = agp_generic_destroy_page, .agp_destroy_pages = agp_generic_destroy_pages, .agp_type_to_mask_type = intel_i830_type_to_mask_type, .chipset_flush = intel_i915_chipset_flush, #ifdef USE_PCI_DMA_API .agp_map_page = intel_agp_map_page, .agp_unmap_page = intel_agp_unmap_page, .agp_map_memory = intel_agp_map_memory, .agp_unmap_memory = intel_agp_unmap_memory, #endif }; static const struct agp_bridge_driver intel_i965_driver = { .owner = THIS_MODULE, .aperture_sizes = intel_i830_sizes, .size_type = FIXED_APER_SIZE, .num_aperture_sizes = 4, .needs_scratch_page = true, .configure = intel_i9xx_configure, .fetch_size = intel_i9xx_fetch_size, .cleanup = intel_i915_cleanup, .mask_memory = intel_i965_mask_memory, .masks = intel_i810_masks, .agp_enable = intel_i810_agp_enable, .cache_flush = global_cache_flush, .create_gatt_table = intel_i965_create_gatt_table, .free_gatt_table = intel_i830_free_gatt_table, .insert_memory = intel_i915_insert_entries, .remove_memory = intel_i915_remove_entries, .alloc_by_type = intel_i830_alloc_by_type, .free_by_type = intel_i810_free_by_type, .agp_alloc_page = agp_generic_alloc_page, .agp_alloc_pages = agp_generic_alloc_pages, .agp_destroy_page = agp_generic_destroy_page, .agp_destroy_pages = agp_generic_destroy_pages, .agp_type_to_mask_type = intel_i830_type_to_mask_type, .chipset_flush = intel_i915_chipset_flush, #ifdef USE_PCI_DMA_API .agp_map_page = intel_agp_map_page, .agp_unmap_page = intel_agp_unmap_page, .agp_map_memory = intel_agp_map_memory, .agp_unmap_memory = intel_agp_unmap_memory, #endif }; static const struct agp_bridge_driver intel_gen6_driver = { .owner = THIS_MODULE, .aperture_sizes = intel_i830_sizes, .size_type = FIXED_APER_SIZE, .num_aperture_sizes = 4, .needs_scratch_page = true, .configure = intel_i9xx_configure, .fetch_size = intel_i9xx_fetch_size, .cleanup = intel_i915_cleanup, .mask_memory = intel_gen6_mask_memory, .masks = intel_i810_masks, .agp_enable = intel_i810_agp_enable, .cache_flush = global_cache_flush, .create_gatt_table = intel_i965_create_gatt_table, .free_gatt_table = intel_i830_free_gatt_table, .insert_memory = intel_i915_insert_entries, .remove_memory = intel_i915_remove_entries, .alloc_by_type = intel_i830_alloc_by_type, .free_by_type = intel_i810_free_by_type, .agp_alloc_page = agp_generic_alloc_page, .agp_alloc_pages = agp_generic_alloc_pages, .agp_destroy_page = agp_generic_destroy_page, .agp_destroy_pages = agp_generic_destroy_pages, .agp_type_to_mask_type = intel_i830_type_to_mask_type, .chipset_flush = intel_i915_chipset_flush, #ifdef USE_PCI_DMA_API .agp_map_page = intel_agp_map_page, .agp_unmap_page = intel_agp_unmap_page, .agp_map_memory = intel_agp_map_memory, .agp_unmap_memory = intel_agp_unmap_memory, #endif }; static const struct agp_bridge_driver intel_g33_driver = { .owner = THIS_MODULE, .aperture_sizes = intel_i830_sizes, .size_type = FIXED_APER_SIZE, .num_aperture_sizes = 4, .needs_scratch_page = true, .configure = intel_i9xx_configure, .fetch_size = intel_i9xx_fetch_size, .cleanup = intel_i915_cleanup, .mask_memory = intel_i965_mask_memory, .masks = intel_i810_masks, .agp_enable = intel_i810_agp_enable, .cache_flush = global_cache_flush, .create_gatt_table = intel_i915_create_gatt_table, .free_gatt_table = intel_i830_free_gatt_table, .insert_memory = intel_i915_insert_entries, .remove_memory = intel_i915_remove_entries, .alloc_by_type = intel_i830_alloc_by_type, .free_by_type = intel_i810_free_by_type, .agp_alloc_page = agp_generic_alloc_page, .agp_alloc_pages = agp_generic_alloc_pages, .agp_destroy_page = agp_generic_destroy_page, .agp_destroy_pages = agp_generic_destroy_pages, .agp_type_to_mask_type = intel_i830_type_to_mask_type, .chipset_flush = intel_i915_chipset_flush, #ifdef USE_PCI_DMA_API .agp_map_page = intel_agp_map_page, .agp_unmap_page = intel_agp_unmap_page, .agp_map_memory = intel_agp_map_memory, .agp_unmap_memory = intel_agp_unmap_memory, #endif };