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422 lines
10 KiB
422 lines
10 KiB
/* |
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* ALi AGPGART routines. |
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*/ |
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#include <linux/types.h> |
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#include <linux/module.h> |
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#include <linux/pci.h> |
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#include <linux/init.h> |
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#include <linux/agp_backend.h> |
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#include <asm/page.h> /* PAGE_SIZE */ |
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#include "agp.h" |
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#define ALI_AGPCTRL 0xb8 |
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#define ALI_ATTBASE 0xbc |
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#define ALI_TLBCTRL 0xc0 |
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#define ALI_TAGCTRL 0xc4 |
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#define ALI_CACHE_FLUSH_CTRL 0xD0 |
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#define ALI_CACHE_FLUSH_ADDR_MASK 0xFFFFF000 |
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#define ALI_CACHE_FLUSH_EN 0x100 |
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static int ali_fetch_size(void) |
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{ |
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int i; |
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u32 temp; |
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struct aper_size_info_32 *values; |
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pci_read_config_dword(agp_bridge->dev, ALI_ATTBASE, &temp); |
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temp &= ~(0xfffffff0); |
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values = A_SIZE_32(agp_bridge->driver->aperture_sizes); |
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for (i = 0; i < agp_bridge->driver->num_aperture_sizes; i++) { |
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if (temp == values[i].size_value) { |
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agp_bridge->previous_size = |
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agp_bridge->current_size = (void *) (values + i); |
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agp_bridge->aperture_size_idx = i; |
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return values[i].size; |
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} |
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} |
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return 0; |
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} |
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static void ali_tlbflush(struct agp_memory *mem) |
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{ |
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u32 temp; |
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pci_read_config_dword(agp_bridge->dev, ALI_TLBCTRL, &temp); |
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temp &= 0xfffffff0; |
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temp |= (1<<0 | 1<<1); |
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pci_write_config_dword(agp_bridge->dev, ALI_TAGCTRL, temp); |
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} |
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static void ali_cleanup(void) |
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{ |
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struct aper_size_info_32 *previous_size; |
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u32 temp; |
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previous_size = A_SIZE_32(agp_bridge->previous_size); |
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pci_read_config_dword(agp_bridge->dev, ALI_TLBCTRL, &temp); |
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// clear tag |
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pci_write_config_dword(agp_bridge->dev, ALI_TAGCTRL, |
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((temp & 0xffffff00) | 0x00000001|0x00000002)); |
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pci_read_config_dword(agp_bridge->dev, ALI_ATTBASE, &temp); |
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pci_write_config_dword(agp_bridge->dev, ALI_ATTBASE, |
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((temp & 0x00000ff0) | previous_size->size_value)); |
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} |
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static int ali_configure(void) |
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{ |
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u32 temp; |
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struct aper_size_info_32 *current_size; |
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current_size = A_SIZE_32(agp_bridge->current_size); |
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/* aperture size and gatt addr */ |
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pci_read_config_dword(agp_bridge->dev, ALI_ATTBASE, &temp); |
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temp = (((temp & 0x00000ff0) | (agp_bridge->gatt_bus_addr & 0xfffff000)) |
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| (current_size->size_value & 0xf)); |
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pci_write_config_dword(agp_bridge->dev, ALI_ATTBASE, temp); |
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/* tlb control */ |
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pci_read_config_dword(agp_bridge->dev, ALI_TLBCTRL, &temp); |
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pci_write_config_dword(agp_bridge->dev, ALI_TLBCTRL, ((temp & 0xffffff00) | 0x00000010)); |
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/* address to map to */ |
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agp_bridge->gart_bus_addr = pci_bus_address(agp_bridge->dev, |
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AGP_APERTURE_BAR); |
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#if 0 |
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if (agp_bridge->type == ALI_M1541) { |
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u32 nlvm_addr = 0; |
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switch (current_size->size_value) { |
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case 0: break; |
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case 1: nlvm_addr = 0x100000;break; |
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case 2: nlvm_addr = 0x200000;break; |
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case 3: nlvm_addr = 0x400000;break; |
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case 4: nlvm_addr = 0x800000;break; |
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case 6: nlvm_addr = 0x1000000;break; |
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case 7: nlvm_addr = 0x2000000;break; |
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case 8: nlvm_addr = 0x4000000;break; |
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case 9: nlvm_addr = 0x8000000;break; |
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case 10: nlvm_addr = 0x10000000;break; |
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default: break; |
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} |
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nlvm_addr--; |
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nlvm_addr&=0xfff00000; |
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nlvm_addr+= agp_bridge->gart_bus_addr; |
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nlvm_addr|=(agp_bridge->gart_bus_addr>>12); |
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dev_info(&agp_bridge->dev->dev, "nlvm top &base = %8x\n", |
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nlvm_addr); |
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} |
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#endif |
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pci_read_config_dword(agp_bridge->dev, ALI_TLBCTRL, &temp); |
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temp &= 0xffffff7f; //enable TLB |
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pci_write_config_dword(agp_bridge->dev, ALI_TLBCTRL, temp); |
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return 0; |
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} |
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static void m1541_cache_flush(void) |
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{ |
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int i, page_count; |
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u32 temp; |
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global_cache_flush(); |
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page_count = 1 << A_SIZE_32(agp_bridge->current_size)->page_order; |
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for (i = 0; i < PAGE_SIZE * page_count; i += PAGE_SIZE) { |
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pci_read_config_dword(agp_bridge->dev, ALI_CACHE_FLUSH_CTRL, |
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&temp); |
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pci_write_config_dword(agp_bridge->dev, ALI_CACHE_FLUSH_CTRL, |
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(((temp & ALI_CACHE_FLUSH_ADDR_MASK) | |
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(agp_bridge->gatt_bus_addr + i)) | |
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ALI_CACHE_FLUSH_EN)); |
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} |
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} |
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static struct page *m1541_alloc_page(struct agp_bridge_data *bridge) |
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{ |
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struct page *page = agp_generic_alloc_page(agp_bridge); |
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u32 temp; |
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if (!page) |
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return NULL; |
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pci_read_config_dword(agp_bridge->dev, ALI_CACHE_FLUSH_CTRL, &temp); |
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pci_write_config_dword(agp_bridge->dev, ALI_CACHE_FLUSH_CTRL, |
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(((temp & ALI_CACHE_FLUSH_ADDR_MASK) | |
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page_to_phys(page)) | ALI_CACHE_FLUSH_EN )); |
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return page; |
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} |
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static void ali_destroy_page(struct page *page, int flags) |
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{ |
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if (page) { |
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if (flags & AGP_PAGE_DESTROY_UNMAP) { |
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global_cache_flush(); /* is this really needed? --hch */ |
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agp_generic_destroy_page(page, flags); |
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} else |
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agp_generic_destroy_page(page, flags); |
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} |
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} |
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static void m1541_destroy_page(struct page *page, int flags) |
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{ |
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u32 temp; |
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if (page == NULL) |
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return; |
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if (flags & AGP_PAGE_DESTROY_UNMAP) { |
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global_cache_flush(); |
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pci_read_config_dword(agp_bridge->dev, ALI_CACHE_FLUSH_CTRL, &temp); |
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pci_write_config_dword(agp_bridge->dev, ALI_CACHE_FLUSH_CTRL, |
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(((temp & ALI_CACHE_FLUSH_ADDR_MASK) | |
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page_to_phys(page)) | ALI_CACHE_FLUSH_EN)); |
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} |
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agp_generic_destroy_page(page, flags); |
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} |
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/* Setup function */ |
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static const struct aper_size_info_32 ali_generic_sizes[7] = |
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{ |
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{256, 65536, 6, 10}, |
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{128, 32768, 5, 9}, |
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{64, 16384, 4, 8}, |
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{32, 8192, 3, 7}, |
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{16, 4096, 2, 6}, |
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{8, 2048, 1, 4}, |
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{4, 1024, 0, 3} |
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}; |
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static const struct agp_bridge_driver ali_generic_bridge = { |
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.owner = THIS_MODULE, |
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.aperture_sizes = ali_generic_sizes, |
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.size_type = U32_APER_SIZE, |
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.num_aperture_sizes = 7, |
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.needs_scratch_page = true, |
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.configure = ali_configure, |
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.fetch_size = ali_fetch_size, |
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.cleanup = ali_cleanup, |
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.tlb_flush = ali_tlbflush, |
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.mask_memory = agp_generic_mask_memory, |
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.masks = NULL, |
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.agp_enable = agp_generic_enable, |
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.cache_flush = global_cache_flush, |
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.create_gatt_table = agp_generic_create_gatt_table, |
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.free_gatt_table = agp_generic_free_gatt_table, |
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.insert_memory = agp_generic_insert_memory, |
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.remove_memory = agp_generic_remove_memory, |
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.alloc_by_type = agp_generic_alloc_by_type, |
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.free_by_type = agp_generic_free_by_type, |
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.agp_alloc_page = agp_generic_alloc_page, |
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.agp_destroy_page = ali_destroy_page, |
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.agp_type_to_mask_type = agp_generic_type_to_mask_type, |
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}; |
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static const struct agp_bridge_driver ali_m1541_bridge = { |
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.owner = THIS_MODULE, |
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.aperture_sizes = ali_generic_sizes, |
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.size_type = U32_APER_SIZE, |
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.num_aperture_sizes = 7, |
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.configure = ali_configure, |
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.fetch_size = ali_fetch_size, |
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.cleanup = ali_cleanup, |
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.tlb_flush = ali_tlbflush, |
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.mask_memory = agp_generic_mask_memory, |
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.masks = NULL, |
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.agp_enable = agp_generic_enable, |
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.cache_flush = m1541_cache_flush, |
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.create_gatt_table = agp_generic_create_gatt_table, |
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.free_gatt_table = agp_generic_free_gatt_table, |
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.insert_memory = agp_generic_insert_memory, |
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.remove_memory = agp_generic_remove_memory, |
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.alloc_by_type = agp_generic_alloc_by_type, |
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.free_by_type = agp_generic_free_by_type, |
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.agp_alloc_page = m1541_alloc_page, |
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.agp_destroy_page = m1541_destroy_page, |
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.agp_type_to_mask_type = agp_generic_type_to_mask_type, |
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}; |
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static struct agp_device_ids ali_agp_device_ids[] = |
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{ |
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{ |
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.device_id = PCI_DEVICE_ID_AL_M1541, |
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.chipset_name = "M1541", |
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}, |
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{ |
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.device_id = PCI_DEVICE_ID_AL_M1621, |
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.chipset_name = "M1621", |
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}, |
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{ |
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.device_id = PCI_DEVICE_ID_AL_M1631, |
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.chipset_name = "M1631", |
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}, |
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{ |
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.device_id = PCI_DEVICE_ID_AL_M1632, |
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.chipset_name = "M1632", |
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}, |
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{ |
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.device_id = PCI_DEVICE_ID_AL_M1641, |
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.chipset_name = "M1641", |
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}, |
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{ |
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.device_id = PCI_DEVICE_ID_AL_M1644, |
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.chipset_name = "M1644", |
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}, |
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{ |
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.device_id = PCI_DEVICE_ID_AL_M1647, |
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.chipset_name = "M1647", |
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}, |
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{ |
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.device_id = PCI_DEVICE_ID_AL_M1651, |
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.chipset_name = "M1651", |
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}, |
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{ |
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.device_id = PCI_DEVICE_ID_AL_M1671, |
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.chipset_name = "M1671", |
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}, |
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{ |
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.device_id = PCI_DEVICE_ID_AL_M1681, |
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.chipset_name = "M1681", |
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}, |
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{ |
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.device_id = PCI_DEVICE_ID_AL_M1683, |
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.chipset_name = "M1683", |
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}, |
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{ }, /* dummy final entry, always present */ |
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}; |
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static int agp_ali_probe(struct pci_dev *pdev, const struct pci_device_id *ent) |
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{ |
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struct agp_device_ids *devs = ali_agp_device_ids; |
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struct agp_bridge_data *bridge; |
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u8 hidden_1621_id, cap_ptr; |
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int j; |
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cap_ptr = pci_find_capability(pdev, PCI_CAP_ID_AGP); |
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if (!cap_ptr) |
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return -ENODEV; |
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/* probe for known chipsets */ |
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for (j = 0; devs[j].chipset_name; j++) { |
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if (pdev->device == devs[j].device_id) |
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goto found; |
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} |
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dev_err(&pdev->dev, "unsupported ALi chipset [%04x/%04x])\n", |
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pdev->vendor, pdev->device); |
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return -ENODEV; |
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found: |
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bridge = agp_alloc_bridge(); |
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if (!bridge) |
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return -ENOMEM; |
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bridge->dev = pdev; |
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bridge->capndx = cap_ptr; |
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switch (pdev->device) { |
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case PCI_DEVICE_ID_AL_M1541: |
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bridge->driver = &ali_m1541_bridge; |
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break; |
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case PCI_DEVICE_ID_AL_M1621: |
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pci_read_config_byte(pdev, 0xFB, &hidden_1621_id); |
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switch (hidden_1621_id) { |
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case 0x31: |
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devs[j].chipset_name = "M1631"; |
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break; |
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case 0x32: |
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devs[j].chipset_name = "M1632"; |
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break; |
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case 0x41: |
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devs[j].chipset_name = "M1641"; |
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break; |
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case 0x43: |
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devs[j].chipset_name = "M1621"; |
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break; |
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case 0x47: |
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devs[j].chipset_name = "M1647"; |
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break; |
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case 0x51: |
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devs[j].chipset_name = "M1651"; |
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break; |
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default: |
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break; |
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} |
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fallthrough; |
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default: |
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bridge->driver = &ali_generic_bridge; |
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} |
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dev_info(&pdev->dev, "ALi %s chipset\n", devs[j].chipset_name); |
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/* Fill in the mode register */ |
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pci_read_config_dword(pdev, |
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bridge->capndx+PCI_AGP_STATUS, |
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&bridge->mode); |
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pci_set_drvdata(pdev, bridge); |
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return agp_add_bridge(bridge); |
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} |
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static void agp_ali_remove(struct pci_dev *pdev) |
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{ |
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struct agp_bridge_data *bridge = pci_get_drvdata(pdev); |
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agp_remove_bridge(bridge); |
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agp_put_bridge(bridge); |
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} |
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static const struct pci_device_id agp_ali_pci_table[] = { |
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{ |
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.class = (PCI_CLASS_BRIDGE_HOST << 8), |
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.class_mask = ~0, |
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.vendor = PCI_VENDOR_ID_AL, |
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.device = PCI_ANY_ID, |
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.subvendor = PCI_ANY_ID, |
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.subdevice = PCI_ANY_ID, |
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}, |
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{ } |
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}; |
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MODULE_DEVICE_TABLE(pci, agp_ali_pci_table); |
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static struct pci_driver agp_ali_pci_driver = { |
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.name = "agpgart-ali", |
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.id_table = agp_ali_pci_table, |
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.probe = agp_ali_probe, |
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.remove = agp_ali_remove, |
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}; |
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static int __init agp_ali_init(void) |
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{ |
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if (agp_off) |
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return -EINVAL; |
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return pci_register_driver(&agp_ali_pci_driver); |
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} |
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static void __exit agp_ali_cleanup(void) |
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{ |
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pci_unregister_driver(&agp_ali_pci_driver); |
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} |
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module_init(agp_ali_init); |
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module_exit(agp_ali_cleanup); |
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MODULE_AUTHOR("Dave Jones"); |
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MODULE_LICENSE("GPL and additional rights"); |
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