11da177e4SLinus Torvalds /*
21da177e4SLinus Torvalds * Transmeta's Efficeon AGPGART driver.
31da177e4SLinus Torvalds *
41da177e4SLinus Torvalds * Based upon a diff by Linus around November '02.
51da177e4SLinus Torvalds *
61da177e4SLinus Torvalds * Ported to the 2.6 kernel by Carlos Puchol <cpglinux@puchol.com>
71da177e4SLinus Torvalds * and H. Peter Anvin <hpa@transmeta.com>.
81da177e4SLinus Torvalds */
91da177e4SLinus Torvalds
101da177e4SLinus Torvalds /*
111da177e4SLinus Torvalds * NOTE-cpg-040217:
121da177e4SLinus Torvalds *
131da177e4SLinus Torvalds * - when compiled as a module, after loading the module,
141da177e4SLinus Torvalds * it will refuse to unload, indicating it is in use,
151da177e4SLinus Torvalds * when it is not.
161da177e4SLinus Torvalds * - no s3 (suspend to ram) testing.
171da177e4SLinus Torvalds * - tested on the efficeon integrated nothbridge for tens
181da177e4SLinus Torvalds * of iterations of starting x and glxgears.
191da177e4SLinus Torvalds * - tested with radeon 9000 and radeon mobility m9 cards
201da177e4SLinus Torvalds * - tested with c3/c4 enabled (with the mobility m9 card)
211da177e4SLinus Torvalds */
221da177e4SLinus Torvalds
231da177e4SLinus Torvalds #include <linux/module.h>
241da177e4SLinus Torvalds #include <linux/pci.h>
251da177e4SLinus Torvalds #include <linux/init.h>
261da177e4SLinus Torvalds #include <linux/agp_backend.h>
271da177e4SLinus Torvalds #include <linux/gfp.h>
281da177e4SLinus Torvalds #include <linux/page-flags.h>
291da177e4SLinus Torvalds #include <linux/mm.h>
301da177e4SLinus Torvalds #include "agp.h"
31ff7cdd69SDaniel Vetter #include "intel-agp.h"
321da177e4SLinus Torvalds
331da177e4SLinus Torvalds /*
341da177e4SLinus Torvalds * The real differences to the generic AGP code is
351da177e4SLinus Torvalds * in the GART mappings - a two-level setup with the
361da177e4SLinus Torvalds * first level being an on-chip 64-entry table.
371da177e4SLinus Torvalds *
381da177e4SLinus Torvalds * The page array is filled through the ATTPAGE register
391da177e4SLinus Torvalds * (Aperture Translation Table Page Register) at 0xB8. Bits:
401da177e4SLinus Torvalds * 31:20: physical page address
411da177e4SLinus Torvalds * 11:9: Page Attribute Table Index (PATI)
421da177e4SLinus Torvalds * must match the PAT index for the
431da177e4SLinus Torvalds * mapped pages (the 2nd level page table pages
441da177e4SLinus Torvalds * themselves should be just regular WB-cacheable,
451da177e4SLinus Torvalds * so this is normally zero.)
461da177e4SLinus Torvalds * 8: Present
471da177e4SLinus Torvalds * 7:6: reserved, write as zero
481da177e4SLinus Torvalds * 5:0: GATT directory index: which 1st-level entry
491da177e4SLinus Torvalds *
501da177e4SLinus Torvalds * The Efficeon AGP spec requires pages to be WB-cacheable
511da177e4SLinus Torvalds * but to be explicitly CLFLUSH'd after any changes.
521da177e4SLinus Torvalds */
531da177e4SLinus Torvalds #define EFFICEON_ATTPAGE 0xb8
541da177e4SLinus Torvalds #define EFFICEON_L1_SIZE 64 /* Number of PDE pages */
551da177e4SLinus Torvalds
561da177e4SLinus Torvalds #define EFFICEON_PATI (0 << 9)
571da177e4SLinus Torvalds #define EFFICEON_PRESENT (1 << 8)
581da177e4SLinus Torvalds
591da177e4SLinus Torvalds static struct _efficeon_private {
601da177e4SLinus Torvalds unsigned long l1_table[EFFICEON_L1_SIZE];
611da177e4SLinus Torvalds } efficeon_private;
621da177e4SLinus Torvalds
63e5524f35SDave Jones static const struct gatt_mask efficeon_generic_masks[] =
641da177e4SLinus Torvalds {
651da177e4SLinus Torvalds {.mask = 0x00000001, .type = 0}
661da177e4SLinus Torvalds };
671da177e4SLinus Torvalds
681f602454SH. Peter Anvin /* This function does the same thing as mask_memory() for this chipset... */
efficeon_mask_memory(struct page * page)6907613ba2SDave Airlie static inline unsigned long efficeon_mask_memory(struct page *page)
701f602454SH. Peter Anvin {
716a12235cSDavid Woodhouse unsigned long addr = page_to_phys(page);
721f602454SH. Peter Anvin return addr | 0x00000001;
731f602454SH. Peter Anvin }
741f602454SH. Peter Anvin
75e5524f35SDave Jones static const struct aper_size_info_lvl2 efficeon_generic_sizes[4] =
761da177e4SLinus Torvalds {
771da177e4SLinus Torvalds {256, 65536, 0},
781da177e4SLinus Torvalds {128, 32768, 32},
791da177e4SLinus Torvalds {64, 16384, 48},
801da177e4SLinus Torvalds {32, 8192, 56}
811da177e4SLinus Torvalds };
821da177e4SLinus Torvalds
831da177e4SLinus Torvalds /*
841da177e4SLinus Torvalds * Control interfaces are largely identical to
851da177e4SLinus Torvalds * the legacy Intel 440BX..
861da177e4SLinus Torvalds */
871da177e4SLinus Torvalds
efficeon_fetch_size(void)881da177e4SLinus Torvalds static int efficeon_fetch_size(void)
891da177e4SLinus Torvalds {
901da177e4SLinus Torvalds int i;
911da177e4SLinus Torvalds u16 temp;
921da177e4SLinus Torvalds struct aper_size_info_lvl2 *values;
931da177e4SLinus Torvalds
941da177e4SLinus Torvalds pci_read_config_word(agp_bridge->dev, INTEL_APSIZE, &temp);
951da177e4SLinus Torvalds values = A_SIZE_LVL2(agp_bridge->driver->aperture_sizes);
961da177e4SLinus Torvalds
971da177e4SLinus Torvalds for (i = 0; i < agp_bridge->driver->num_aperture_sizes; i++) {
981da177e4SLinus Torvalds if (temp == values[i].size_value) {
991da177e4SLinus Torvalds agp_bridge->previous_size =
1001da177e4SLinus Torvalds agp_bridge->current_size = (void *) (values + i);
1011da177e4SLinus Torvalds agp_bridge->aperture_size_idx = i;
1021da177e4SLinus Torvalds return values[i].size;
1031da177e4SLinus Torvalds }
1041da177e4SLinus Torvalds }
1051da177e4SLinus Torvalds
1061da177e4SLinus Torvalds return 0;
1071da177e4SLinus Torvalds }
1081da177e4SLinus Torvalds
efficeon_tlbflush(struct agp_memory * mem)1091da177e4SLinus Torvalds static void efficeon_tlbflush(struct agp_memory * mem)
1101da177e4SLinus Torvalds {
1111da177e4SLinus Torvalds printk(KERN_DEBUG PFX "efficeon_tlbflush()\n");
1121da177e4SLinus Torvalds pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, 0x2200);
1131da177e4SLinus Torvalds pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, 0x2280);
1141da177e4SLinus Torvalds }
1151da177e4SLinus Torvalds
efficeon_cleanup(void)1161da177e4SLinus Torvalds static void efficeon_cleanup(void)
1171da177e4SLinus Torvalds {
1181da177e4SLinus Torvalds u16 temp;
1191da177e4SLinus Torvalds struct aper_size_info_lvl2 *previous_size;
1201da177e4SLinus Torvalds
1211da177e4SLinus Torvalds printk(KERN_DEBUG PFX "efficeon_cleanup()\n");
1221da177e4SLinus Torvalds previous_size = A_SIZE_LVL2(agp_bridge->previous_size);
1231da177e4SLinus Torvalds pci_read_config_word(agp_bridge->dev, INTEL_NBXCFG, &temp);
1241da177e4SLinus Torvalds pci_write_config_word(agp_bridge->dev, INTEL_NBXCFG, temp & ~(1 << 9));
1251da177e4SLinus Torvalds pci_write_config_word(agp_bridge->dev, INTEL_APSIZE,
1261da177e4SLinus Torvalds previous_size->size_value);
1271da177e4SLinus Torvalds }
1281da177e4SLinus Torvalds
efficeon_configure(void)1291da177e4SLinus Torvalds static int efficeon_configure(void)
1301da177e4SLinus Torvalds {
1311da177e4SLinus Torvalds u16 temp2;
1321da177e4SLinus Torvalds struct aper_size_info_lvl2 *current_size;
1331da177e4SLinus Torvalds
1341da177e4SLinus Torvalds printk(KERN_DEBUG PFX "efficeon_configure()\n");
1351da177e4SLinus Torvalds
1361da177e4SLinus Torvalds current_size = A_SIZE_LVL2(agp_bridge->current_size);
1371da177e4SLinus Torvalds
1381da177e4SLinus Torvalds /* aperture size */
1391da177e4SLinus Torvalds pci_write_config_word(agp_bridge->dev, INTEL_APSIZE,
1401da177e4SLinus Torvalds current_size->size_value);
1411da177e4SLinus Torvalds
1421da177e4SLinus Torvalds /* address to map to */
143e501b3d8SBjorn Helgaas agp_bridge->gart_bus_addr = pci_bus_address(agp_bridge->dev,
144e501b3d8SBjorn Helgaas AGP_APERTURE_BAR);
1451da177e4SLinus Torvalds
1461da177e4SLinus Torvalds /* agpctrl */
1471da177e4SLinus Torvalds pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, 0x2280);
1481da177e4SLinus Torvalds
1491da177e4SLinus Torvalds /* paccfg/nbxcfg */
1501da177e4SLinus Torvalds pci_read_config_word(agp_bridge->dev, INTEL_NBXCFG, &temp2);
1511da177e4SLinus Torvalds pci_write_config_word(agp_bridge->dev, INTEL_NBXCFG,
1521da177e4SLinus Torvalds (temp2 & ~(1 << 10)) | (1 << 9) | (1 << 11));
1531da177e4SLinus Torvalds /* clear any possible error conditions */
1541da177e4SLinus Torvalds pci_write_config_byte(agp_bridge->dev, INTEL_ERRSTS + 1, 7);
1551da177e4SLinus Torvalds return 0;
1561da177e4SLinus Torvalds }
1571da177e4SLinus Torvalds
efficeon_free_gatt_table(struct agp_bridge_data * bridge)1581da177e4SLinus Torvalds static int efficeon_free_gatt_table(struct agp_bridge_data *bridge)
1591da177e4SLinus Torvalds {
1601da177e4SLinus Torvalds int index, freed = 0;
1611da177e4SLinus Torvalds
1621da177e4SLinus Torvalds for (index = 0; index < EFFICEON_L1_SIZE; index++) {
1631da177e4SLinus Torvalds unsigned long page = efficeon_private.l1_table[index];
1641da177e4SLinus Torvalds if (page) {
1651da177e4SLinus Torvalds efficeon_private.l1_table[index] = 0;
1661da177e4SLinus Torvalds free_page(page);
1671da177e4SLinus Torvalds freed++;
1681da177e4SLinus Torvalds }
1691da177e4SLinus Torvalds printk(KERN_DEBUG PFX "efficeon_free_gatt_table(%p, %02x, %08x)\n",
1701da177e4SLinus Torvalds agp_bridge->dev, EFFICEON_ATTPAGE, index);
1711da177e4SLinus Torvalds pci_write_config_dword(agp_bridge->dev,
1721da177e4SLinus Torvalds EFFICEON_ATTPAGE, index);
1731da177e4SLinus Torvalds }
1741da177e4SLinus Torvalds printk(KERN_DEBUG PFX "efficeon_free_gatt_table() freed %d pages\n", freed);
1751da177e4SLinus Torvalds return 0;
1761da177e4SLinus Torvalds }
1771da177e4SLinus Torvalds
1781da177e4SLinus Torvalds
1791da177e4SLinus Torvalds /*
180d6e05edcSAndreas Mohr * Since we don't need contiguous memory we just try
1811da177e4SLinus Torvalds * to get the gatt table once
1821da177e4SLinus Torvalds */
1831da177e4SLinus Torvalds
1841da177e4SLinus Torvalds #define GET_PAGE_DIR_OFF(addr) (addr >> 22)
1851da177e4SLinus Torvalds #define GET_PAGE_DIR_IDX(addr) (GET_PAGE_DIR_OFF(addr) - \
1861da177e4SLinus Torvalds GET_PAGE_DIR_OFF(agp_bridge->gart_bus_addr))
1871da177e4SLinus Torvalds #define GET_GATT_OFF(addr) ((addr & 0x003ff000) >> 12)
1881da177e4SLinus Torvalds #undef GET_GATT
1891da177e4SLinus Torvalds #define GET_GATT(addr) (efficeon_private.gatt_pages[\
1901da177e4SLinus Torvalds GET_PAGE_DIR_IDX(addr)]->remapped)
1911da177e4SLinus Torvalds
efficeon_create_gatt_table(struct agp_bridge_data * bridge)1921da177e4SLinus Torvalds static int efficeon_create_gatt_table(struct agp_bridge_data *bridge)
1931da177e4SLinus Torvalds {
1941da177e4SLinus Torvalds int index;
1951da177e4SLinus Torvalds const int pati = EFFICEON_PATI;
1961da177e4SLinus Torvalds const int present = EFFICEON_PRESENT;
1971da177e4SLinus Torvalds const int clflush_chunk = ((cpuid_ebx(1) >> 8) & 0xff) << 3;
1981da177e4SLinus Torvalds int num_entries, l1_pages;
1991da177e4SLinus Torvalds
2001da177e4SLinus Torvalds num_entries = A_SIZE_LVL2(agp_bridge->current_size)->num_entries;
2011da177e4SLinus Torvalds
2021da177e4SLinus Torvalds printk(KERN_DEBUG PFX "efficeon_create_gatt_table(%d)\n", num_entries);
2031da177e4SLinus Torvalds
2041da177e4SLinus Torvalds /* There are 2^10 PTE pages per PDE page */
2051da177e4SLinus Torvalds BUG_ON(num_entries & 0x3ff);
2061da177e4SLinus Torvalds l1_pages = num_entries >> 10;
2071da177e4SLinus Torvalds
2081da177e4SLinus Torvalds for (index = 0 ; index < l1_pages ; index++) {
2091da177e4SLinus Torvalds int offset;
2101da177e4SLinus Torvalds unsigned long page;
2111da177e4SLinus Torvalds unsigned long value;
2121da177e4SLinus Torvalds
2131da177e4SLinus Torvalds page = efficeon_private.l1_table[index];
2141da177e4SLinus Torvalds BUG_ON(page);
2151da177e4SLinus Torvalds
2161da177e4SLinus Torvalds page = get_zeroed_page(GFP_KERNEL);
2171da177e4SLinus Torvalds if (!page) {
2181da177e4SLinus Torvalds efficeon_free_gatt_table(agp_bridge);
2191da177e4SLinus Torvalds return -ENOMEM;
2201da177e4SLinus Torvalds }
2211da177e4SLinus Torvalds
2221da177e4SLinus Torvalds for (offset = 0; offset < PAGE_SIZE; offset += clflush_chunk)
2236619a8fbSH. Peter Anvin clflush((char *)page+offset);
2241da177e4SLinus Torvalds
2251da177e4SLinus Torvalds efficeon_private.l1_table[index] = page;
2261da177e4SLinus Torvalds
2276a12235cSDavid Woodhouse value = virt_to_phys((unsigned long *)page) | pati | present | index;
2281da177e4SLinus Torvalds
2291da177e4SLinus Torvalds pci_write_config_dword(agp_bridge->dev,
2301da177e4SLinus Torvalds EFFICEON_ATTPAGE, value);
2311da177e4SLinus Torvalds }
2321da177e4SLinus Torvalds
2331da177e4SLinus Torvalds return 0;
2341da177e4SLinus Torvalds }
2351da177e4SLinus Torvalds
efficeon_insert_memory(struct agp_memory * mem,off_t pg_start,int type)2361da177e4SLinus Torvalds static int efficeon_insert_memory(struct agp_memory * mem, off_t pg_start, int type)
2371da177e4SLinus Torvalds {
2381da177e4SLinus Torvalds int i, count = mem->page_count, num_entries;
2391da177e4SLinus Torvalds unsigned int *page, *last_page;
2401da177e4SLinus Torvalds const int clflush_chunk = ((cpuid_ebx(1) >> 8) & 0xff) << 3;
2411da177e4SLinus Torvalds const unsigned long clflush_mask = ~(clflush_chunk-1);
2421da177e4SLinus Torvalds
2431da177e4SLinus Torvalds printk(KERN_DEBUG PFX "efficeon_insert_memory(%lx, %d)\n", pg_start, count);
2441da177e4SLinus Torvalds
2451da177e4SLinus Torvalds num_entries = A_SIZE_LVL2(agp_bridge->current_size)->num_entries;
2461da177e4SLinus Torvalds if ((pg_start + mem->page_count) > num_entries)
2471da177e4SLinus Torvalds return -EINVAL;
2481da177e4SLinus Torvalds if (type != 0 || mem->type != 0)
2491da177e4SLinus Torvalds return -EINVAL;
2501da177e4SLinus Torvalds
251c7258012SJoe Perches if (!mem->is_flushed) {
2521da177e4SLinus Torvalds global_cache_flush();
253c7258012SJoe Perches mem->is_flushed = true;
2541da177e4SLinus Torvalds }
2551da177e4SLinus Torvalds
2561da177e4SLinus Torvalds last_page = NULL;
2571da177e4SLinus Torvalds for (i = 0; i < count; i++) {
2581da177e4SLinus Torvalds int index = pg_start + i;
25907613ba2SDave Airlie unsigned long insert = efficeon_mask_memory(mem->pages[i]);
2601da177e4SLinus Torvalds
2611da177e4SLinus Torvalds page = (unsigned int *) efficeon_private.l1_table[index >> 10];
2621da177e4SLinus Torvalds
2631da177e4SLinus Torvalds if (!page)
2641da177e4SLinus Torvalds continue;
2651da177e4SLinus Torvalds
2661da177e4SLinus Torvalds page += (index & 0x3ff);
2671da177e4SLinus Torvalds *page = insert;
2681da177e4SLinus Torvalds
2691da177e4SLinus Torvalds /* clflush is slow, so don't clflush until we have to */
2701da177e4SLinus Torvalds if (last_page &&
2716619a8fbSH. Peter Anvin (((unsigned long)page^(unsigned long)last_page) &
2726619a8fbSH. Peter Anvin clflush_mask))
2736619a8fbSH. Peter Anvin clflush(last_page);
2741da177e4SLinus Torvalds
2751da177e4SLinus Torvalds last_page = page;
2761da177e4SLinus Torvalds }
2771da177e4SLinus Torvalds
2781da177e4SLinus Torvalds if ( last_page )
2796619a8fbSH. Peter Anvin clflush(last_page);
2801da177e4SLinus Torvalds
2811da177e4SLinus Torvalds agp_bridge->driver->tlb_flush(mem);
2821da177e4SLinus Torvalds return 0;
2831da177e4SLinus Torvalds }
2841da177e4SLinus Torvalds
efficeon_remove_memory(struct agp_memory * mem,off_t pg_start,int type)2851da177e4SLinus Torvalds static int efficeon_remove_memory(struct agp_memory * mem, off_t pg_start, int type)
2861da177e4SLinus Torvalds {
2871da177e4SLinus Torvalds int i, count = mem->page_count, num_entries;
2881da177e4SLinus Torvalds
2891da177e4SLinus Torvalds printk(KERN_DEBUG PFX "efficeon_remove_memory(%lx, %d)\n", pg_start, count);
2901da177e4SLinus Torvalds
2911da177e4SLinus Torvalds num_entries = A_SIZE_LVL2(agp_bridge->current_size)->num_entries;
2921da177e4SLinus Torvalds
2931da177e4SLinus Torvalds if ((pg_start + mem->page_count) > num_entries)
2941da177e4SLinus Torvalds return -EINVAL;
2951da177e4SLinus Torvalds if (type != 0 || mem->type != 0)
2961da177e4SLinus Torvalds return -EINVAL;
2971da177e4SLinus Torvalds
2981da177e4SLinus Torvalds for (i = 0; i < count; i++) {
2991da177e4SLinus Torvalds int index = pg_start + i;
3001da177e4SLinus Torvalds unsigned int *page = (unsigned int *) efficeon_private.l1_table[index >> 10];
3011da177e4SLinus Torvalds
3021da177e4SLinus Torvalds if (!page)
3031da177e4SLinus Torvalds continue;
3041da177e4SLinus Torvalds page += (index & 0x3ff);
3051da177e4SLinus Torvalds *page = 0;
3061da177e4SLinus Torvalds }
3071da177e4SLinus Torvalds agp_bridge->driver->tlb_flush(mem);
3081da177e4SLinus Torvalds return 0;
3091da177e4SLinus Torvalds }
3101da177e4SLinus Torvalds
3111da177e4SLinus Torvalds
312e5524f35SDave Jones static const struct agp_bridge_driver efficeon_driver = {
3131da177e4SLinus Torvalds .owner = THIS_MODULE,
3141da177e4SLinus Torvalds .aperture_sizes = efficeon_generic_sizes,
3151da177e4SLinus Torvalds .size_type = LVL2_APER_SIZE,
3161da177e4SLinus Torvalds .num_aperture_sizes = 4,
3171da177e4SLinus Torvalds .configure = efficeon_configure,
3181da177e4SLinus Torvalds .fetch_size = efficeon_fetch_size,
3191da177e4SLinus Torvalds .cleanup = efficeon_cleanup,
3201da177e4SLinus Torvalds .tlb_flush = efficeon_tlbflush,
3211da177e4SLinus Torvalds .mask_memory = agp_generic_mask_memory,
3221da177e4SLinus Torvalds .masks = efficeon_generic_masks,
3231da177e4SLinus Torvalds .agp_enable = agp_generic_enable,
3241da177e4SLinus Torvalds .cache_flush = global_cache_flush,
3251da177e4SLinus Torvalds
3261da177e4SLinus Torvalds // Efficeon-specific GATT table setup / populate / teardown
3271da177e4SLinus Torvalds .create_gatt_table = efficeon_create_gatt_table,
3281da177e4SLinus Torvalds .free_gatt_table = efficeon_free_gatt_table,
3291da177e4SLinus Torvalds .insert_memory = efficeon_insert_memory,
3301da177e4SLinus Torvalds .remove_memory = efficeon_remove_memory,
331c7258012SJoe Perches .cant_use_aperture = false, // true might be faster?
3321da177e4SLinus Torvalds
3331da177e4SLinus Torvalds // Generic
3341da177e4SLinus Torvalds .alloc_by_type = agp_generic_alloc_by_type,
3351da177e4SLinus Torvalds .free_by_type = agp_generic_free_by_type,
3361da177e4SLinus Torvalds .agp_alloc_page = agp_generic_alloc_page,
3375f310b63SRene Herman .agp_alloc_pages = agp_generic_alloc_pages,
3381da177e4SLinus Torvalds .agp_destroy_page = agp_generic_destroy_page,
3395f310b63SRene Herman .agp_destroy_pages = agp_generic_destroy_pages,
340a030ce44SThomas Hellstrom .agp_type_to_mask_type = agp_generic_type_to_mask_type,
3411da177e4SLinus Torvalds };
3421da177e4SLinus Torvalds
agp_efficeon_probe(struct pci_dev * pdev,const struct pci_device_id * ent)343bcd2982aSGreg Kroah-Hartman static int agp_efficeon_probe(struct pci_dev *pdev,
3441da177e4SLinus Torvalds const struct pci_device_id *ent)
3451da177e4SLinus Torvalds {
3461da177e4SLinus Torvalds struct agp_bridge_data *bridge;
3471da177e4SLinus Torvalds u8 cap_ptr;
3481da177e4SLinus Torvalds struct resource *r;
3491da177e4SLinus Torvalds
3501da177e4SLinus Torvalds cap_ptr = pci_find_capability(pdev, PCI_CAP_ID_AGP);
3511da177e4SLinus Torvalds if (!cap_ptr)
3521da177e4SLinus Torvalds return -ENODEV;
3531da177e4SLinus Torvalds
3541da177e4SLinus Torvalds /* Probe for Efficeon controller */
3551da177e4SLinus Torvalds if (pdev->device != PCI_DEVICE_ID_EFFICEON) {
3561da177e4SLinus Torvalds printk(KERN_ERR PFX "Unsupported Efficeon chipset (device id: %04x)\n",
3571da177e4SLinus Torvalds pdev->device);
3581da177e4SLinus Torvalds return -ENODEV;
3591da177e4SLinus Torvalds }
3601da177e4SLinus Torvalds
3611da177e4SLinus Torvalds printk(KERN_INFO PFX "Detected Transmeta Efficeon TM8000 series chipset\n");
3621da177e4SLinus Torvalds
3631da177e4SLinus Torvalds bridge = agp_alloc_bridge();
3641da177e4SLinus Torvalds if (!bridge)
3651da177e4SLinus Torvalds return -ENOMEM;
3661da177e4SLinus Torvalds
3671da177e4SLinus Torvalds bridge->driver = &efficeon_driver;
3681da177e4SLinus Torvalds bridge->dev = pdev;
3691da177e4SLinus Torvalds bridge->capndx = cap_ptr;
3701da177e4SLinus Torvalds
3711da177e4SLinus Torvalds /*
37246cfc58aSKulikov Vasiliy * If the device has not been properly setup, the following will catch
37346cfc58aSKulikov Vasiliy * the problem and should stop the system from crashing.
37446cfc58aSKulikov Vasiliy * 20030610 - hamish@zot.org
37546cfc58aSKulikov Vasiliy */
37646cfc58aSKulikov Vasiliy if (pci_enable_device(pdev)) {
37746cfc58aSKulikov Vasiliy printk(KERN_ERR PFX "Unable to Enable PCI device\n");
37846cfc58aSKulikov Vasiliy agp_put_bridge(bridge);
37946cfc58aSKulikov Vasiliy return -ENODEV;
38046cfc58aSKulikov Vasiliy }
38146cfc58aSKulikov Vasiliy
38246cfc58aSKulikov Vasiliy /*
3831da177e4SLinus Torvalds * The following fixes the case where the BIOS has "forgotten" to
3841da177e4SLinus Torvalds * provide an address range for the GART.
3851da177e4SLinus Torvalds * 20030610 - hamish@zot.org
3861da177e4SLinus Torvalds */
3871da177e4SLinus Torvalds r = &pdev->resource[0];
3881da177e4SLinus Torvalds if (!r->start && r->end) {
3891da177e4SLinus Torvalds if (pci_assign_resource(pdev, 0)) {
3901da177e4SLinus Torvalds printk(KERN_ERR PFX "could not assign resource 0\n");
391db7f3dedSJesper Juhl agp_put_bridge(bridge);
3921da177e4SLinus Torvalds return -ENODEV;
3931da177e4SLinus Torvalds }
3941da177e4SLinus Torvalds }
3951da177e4SLinus Torvalds
3961da177e4SLinus Torvalds /* Fill in the mode register */
3971da177e4SLinus Torvalds if (cap_ptr) {
3981da177e4SLinus Torvalds pci_read_config_dword(pdev,
3991da177e4SLinus Torvalds bridge->capndx+PCI_AGP_STATUS,
4001da177e4SLinus Torvalds &bridge->mode);
4011da177e4SLinus Torvalds }
4021da177e4SLinus Torvalds
4031da177e4SLinus Torvalds pci_set_drvdata(pdev, bridge);
4041da177e4SLinus Torvalds return agp_add_bridge(bridge);
4051da177e4SLinus Torvalds }
4061da177e4SLinus Torvalds
agp_efficeon_remove(struct pci_dev * pdev)40739af33fcSBill Pemberton static void agp_efficeon_remove(struct pci_dev *pdev)
4081da177e4SLinus Torvalds {
4091da177e4SLinus Torvalds struct agp_bridge_data *bridge = pci_get_drvdata(pdev);
4101da177e4SLinus Torvalds
4111da177e4SLinus Torvalds agp_remove_bridge(bridge);
4121da177e4SLinus Torvalds agp_put_bridge(bridge);
4131da177e4SLinus Torvalds }
4141da177e4SLinus Torvalds
agp_efficeon_resume(struct device * dev)415*94e9f9a2SBjorn Helgaas static int agp_efficeon_resume(struct device *dev)
41671565619SAlexey Dobriyan {
41771565619SAlexey Dobriyan printk(KERN_DEBUG PFX "agp_efficeon_resume()\n");
41871565619SAlexey Dobriyan return efficeon_configure();
41971565619SAlexey Dobriyan }
4201da177e4SLinus Torvalds
4210fa02c65SArvind Yadav static const struct pci_device_id agp_efficeon_pci_table[] = {
4221da177e4SLinus Torvalds {
4231da177e4SLinus Torvalds .class = (PCI_CLASS_BRIDGE_HOST << 8),
4241da177e4SLinus Torvalds .class_mask = ~0,
4251da177e4SLinus Torvalds .vendor = PCI_VENDOR_ID_TRANSMETA,
4261da177e4SLinus Torvalds .device = PCI_ANY_ID,
4271da177e4SLinus Torvalds .subvendor = PCI_ANY_ID,
4281da177e4SLinus Torvalds .subdevice = PCI_ANY_ID,
4291da177e4SLinus Torvalds },
4301da177e4SLinus Torvalds { }
4311da177e4SLinus Torvalds };
4321da177e4SLinus Torvalds
433*94e9f9a2SBjorn Helgaas static DEFINE_SIMPLE_DEV_PM_OPS(agp_efficeon_pm_ops, NULL, agp_efficeon_resume);
434*94e9f9a2SBjorn Helgaas
4351da177e4SLinus Torvalds MODULE_DEVICE_TABLE(pci, agp_efficeon_pci_table);
4361da177e4SLinus Torvalds
4371da177e4SLinus Torvalds static struct pci_driver agp_efficeon_pci_driver = {
4381da177e4SLinus Torvalds .name = "agpgart-efficeon",
4391da177e4SLinus Torvalds .id_table = agp_efficeon_pci_table,
4401da177e4SLinus Torvalds .probe = agp_efficeon_probe,
4411da177e4SLinus Torvalds .remove = agp_efficeon_remove,
442*94e9f9a2SBjorn Helgaas .driver.pm = &agp_efficeon_pm_ops,
4431da177e4SLinus Torvalds };
4441da177e4SLinus Torvalds
agp_efficeon_init(void)4451da177e4SLinus Torvalds static int __init agp_efficeon_init(void)
4461da177e4SLinus Torvalds {
4471da177e4SLinus Torvalds static int agp_initialised=0;
4481da177e4SLinus Torvalds
4491da177e4SLinus Torvalds if (agp_off)
4501da177e4SLinus Torvalds return -EINVAL;
4511da177e4SLinus Torvalds
4521da177e4SLinus Torvalds if (agp_initialised == 1)
4531da177e4SLinus Torvalds return 0;
4541da177e4SLinus Torvalds agp_initialised=1;
4551da177e4SLinus Torvalds
4561da177e4SLinus Torvalds return pci_register_driver(&agp_efficeon_pci_driver);
4571da177e4SLinus Torvalds }
4581da177e4SLinus Torvalds
agp_efficeon_cleanup(void)4591da177e4SLinus Torvalds static void __exit agp_efficeon_cleanup(void)
4601da177e4SLinus Torvalds {
4611da177e4SLinus Torvalds pci_unregister_driver(&agp_efficeon_pci_driver);
4621da177e4SLinus Torvalds }
4631da177e4SLinus Torvalds
4641da177e4SLinus Torvalds module_init(agp_efficeon_init);
4651da177e4SLinus Torvalds module_exit(agp_efficeon_cleanup);
4661da177e4SLinus Torvalds
4671da177e4SLinus Torvalds MODULE_AUTHOR("Carlos Puchol <cpglinux@puchol.com>");
4681da177e4SLinus Torvalds MODULE_LICENSE("GPL and additional rights");
469