diff options
Diffstat (limited to 'drivers/char/agp/uninorth-agp.c')
| -rw-r--r-- | drivers/char/agp/uninorth-agp.c | 77 |
1 files changed, 25 insertions, 52 deletions
diff --git a/drivers/char/agp/uninorth-agp.c b/drivers/char/agp/uninorth-agp.c index 703959eba45a..d89da4ac061f 100644 --- a/drivers/char/agp/uninorth-agp.c +++ b/drivers/char/agp/uninorth-agp.c @@ -144,16 +144,13 @@ static int uninorth_configure(void) return 0; } -static int uninorth_insert_memory(struct agp_memory *mem, off_t pg_start, - int type) +static int uninorth_insert_memory(struct agp_memory *mem, off_t pg_start, int type) { - int i, j, num_entries; + int i, num_entries; void *temp; + u32 *gp; int mask_type; - temp = agp_bridge->current_size; - num_entries = A_SIZE_32(temp)->num_entries; - if (type != mem->type) return -EINVAL; @@ -163,49 +160,12 @@ static int uninorth_insert_memory(struct agp_memory *mem, off_t pg_start, return -EINVAL; } - if ((pg_start + mem->page_count) > num_entries) - return -EINVAL; - - j = pg_start; - - while (j < (pg_start + mem->page_count)) { - if (agp_bridge->gatt_table[j]) - return -EBUSY; - j++; - } - - for (i = 0, j = pg_start; i < mem->page_count; i++, j++) { - agp_bridge->gatt_table[j] = - cpu_to_le32((page_to_phys(mem->pages[i]) & 0xFFFFF000UL) | 0x1UL); - flush_dcache_range((unsigned long)__va(page_to_phys(mem->pages[i])), - (unsigned long)__va(page_to_phys(mem->pages[i]))+0x1000); - } - (void)in_le32((volatile u32*)&agp_bridge->gatt_table[pg_start]); - mb(); - - uninorth_tlbflush(mem); - return 0; -} - -static int u3_insert_memory(struct agp_memory *mem, off_t pg_start, int type) -{ - int i, num_entries; - void *temp; - u32 *gp; - int mask_type; + if (mem->page_count == 0) + return 0; temp = agp_bridge->current_size; num_entries = A_SIZE_32(temp)->num_entries; - if (type != mem->type) - return -EINVAL; - - mask_type = agp_bridge->driver->agp_type_to_mask_type(agp_bridge, type); - if (mask_type != 0) { - /* We know nothing of memory types */ - return -EINVAL; - } - if ((pg_start + mem->page_count) > num_entries) return -EINVAL; @@ -213,14 +173,18 @@ static int u3_insert_memory(struct agp_memory *mem, off_t pg_start, int type) for (i = 0; i < mem->page_count; ++i) { if (gp[i]) { dev_info(&agp_bridge->dev->dev, - "u3_insert_memory: entry 0x%x occupied (%x)\n", + "uninorth_insert_memory: entry 0x%x occupied (%x)\n", i, gp[i]); return -EBUSY; } } for (i = 0; i < mem->page_count; i++) { - gp[i] = (page_to_phys(mem->pages[i]) >> PAGE_SHIFT) | 0x80000000UL; + if (is_u3) + gp[i] = (page_to_phys(mem->pages[i]) >> PAGE_SHIFT) | 0x80000000UL; + else + gp[i] = cpu_to_le32((page_to_phys(mem->pages[i]) & 0xFFFFF000UL) | + 0x1UL); flush_dcache_range((unsigned long)__va(page_to_phys(mem->pages[i])), (unsigned long)__va(page_to_phys(mem->pages[i]))+0x1000); } @@ -230,14 +194,23 @@ static int u3_insert_memory(struct agp_memory *mem, off_t pg_start, int type) return 0; } -int u3_remove_memory(struct agp_memory *mem, off_t pg_start, int type) +int uninorth_remove_memory(struct agp_memory *mem, off_t pg_start, int type) { size_t i; u32 *gp; + int mask_type; + + if (type != mem->type) + return -EINVAL; - if (type != 0 || mem->type != 0) + mask_type = agp_bridge->driver->agp_type_to_mask_type(agp_bridge, type); + if (mask_type != 0) { /* We know nothing of memory types */ return -EINVAL; + } + + if (mem->page_count == 0) + return 0; gp = (u32 *) &agp_bridge->gatt_table[pg_start]; for (i = 0; i < mem->page_count; ++i) @@ -536,7 +509,7 @@ const struct agp_bridge_driver uninorth_agp_driver = { .create_gatt_table = uninorth_create_gatt_table, .free_gatt_table = uninorth_free_gatt_table, .insert_memory = uninorth_insert_memory, - .remove_memory = agp_generic_remove_memory, + .remove_memory = uninorth_remove_memory, .alloc_by_type = agp_generic_alloc_by_type, .free_by_type = agp_generic_free_by_type, .agp_alloc_page = agp_generic_alloc_page, @@ -562,8 +535,8 @@ const struct agp_bridge_driver u3_agp_driver = { .agp_enable = uninorth_agp_enable, .create_gatt_table = uninorth_create_gatt_table, .free_gatt_table = uninorth_free_gatt_table, - .insert_memory = u3_insert_memory, - .remove_memory = u3_remove_memory, + .insert_memory = uninorth_insert_memory, + .remove_memory = uninorth_remove_memory, .alloc_by_type = agp_generic_alloc_by_type, .free_by_type = agp_generic_free_by_type, .agp_alloc_page = agp_generic_alloc_page, |