diff options
| -rw-r--r-- | drivers/char/agp/backend.c | 9 | ||||
| -rw-r--r-- | drivers/char/agp/generic.c | 11 | ||||
| -rw-r--r-- | drivers/char/agp/i460-agp.c | 9 | ||||
| -rw-r--r-- | drivers/char/agp/intel-agp.c | 5 |
4 files changed, 25 insertions, 9 deletions
diff --git a/drivers/char/agp/backend.c b/drivers/char/agp/backend.c index 73f333f491bd..4d5ed18dad00 100644 --- a/drivers/char/agp/backend.c +++ b/drivers/char/agp/backend.c @@ -147,6 +147,7 @@ static int agp_backend_initialize(struct agp_bridge_data *bridge) printk(KERN_ERR PFX "unable to get memory for scratch page.\n"); return -ENOMEM; } + global_flush_tlb(); bridge->scratch_page_real = virt_to_gart(addr); bridge->scratch_page = @@ -187,9 +188,11 @@ static int agp_backend_initialize(struct agp_bridge_data *bridge) return 0; err_out: - if (bridge->driver->needs_scratch_page) + if (bridge->driver->needs_scratch_page) { bridge->driver->agp_destroy_page( gart_to_virt(bridge->scratch_page_real)); + global_flush_tlb(); + } if (got_gatt) bridge->driver->free_gatt_table(bridge); if (got_keylist) { @@ -211,9 +214,11 @@ static void agp_backend_cleanup(struct agp_bridge_data *bridge) bridge->key_list = NULL; if (bridge->driver->agp_destroy_page && - bridge->driver->needs_scratch_page) + bridge->driver->needs_scratch_page) { bridge->driver->agp_destroy_page( gart_to_virt(bridge->scratch_page_real)); + global_flush_tlb(); + } } /* When we remove the global variable agp_bridge from all drivers diff --git a/drivers/char/agp/generic.c b/drivers/char/agp/generic.c index c4a38715c6f9..19f242b50781 100644 --- a/drivers/char/agp/generic.c +++ b/drivers/char/agp/generic.c @@ -57,7 +57,8 @@ int map_page_into_agp(struct page *page) { int i; i = change_page_attr(page, 1, PAGE_KERNEL_NOCACHE); - global_flush_tlb(); + /* Caller's responsibility to call global_flush_tlb() for + * performance reasons */ return i; } EXPORT_SYMBOL_GPL(map_page_into_agp); @@ -66,7 +67,8 @@ int unmap_page_from_agp(struct page *page) { int i; i = change_page_attr(page, 1, PAGE_KERNEL); - global_flush_tlb(); + /* Caller's responsibility to call global_flush_tlb() for + * performance reasons */ return i; } EXPORT_SYMBOL_GPL(unmap_page_from_agp); @@ -153,6 +155,7 @@ void agp_free_memory(struct agp_memory *curr) for (i = 0; i < curr->page_count; i++) { curr->bridge->driver->agp_destroy_page(gart_to_virt(curr->memory[i])); } + global_flush_tlb(); } agp_free_key(curr->key); vfree(curr->memory); @@ -210,7 +213,9 @@ struct agp_memory *agp_allocate_memory(struct agp_bridge_data *bridge, new->memory[i] = virt_to_gart(addr); new->page_count++; } - new->bridge = bridge; + global_flush_tlb(); + + new->bridge = bridge; flush_agp_mappings(); diff --git a/drivers/char/agp/i460-agp.c b/drivers/char/agp/i460-agp.c index 58944cd271ea..be2e569ae910 100644 --- a/drivers/char/agp/i460-agp.c +++ b/drivers/char/agp/i460-agp.c @@ -514,9 +514,10 @@ static void *i460_alloc_page (struct agp_bridge_data *bridge) { void *page; - if (I460_IO_PAGE_SHIFT <= PAGE_SHIFT) + if (I460_IO_PAGE_SHIFT <= PAGE_SHIFT) { page = agp_generic_alloc_page(agp_bridge); - else + global_flush_tlb(); + } else /* Returning NULL would cause problems */ /* AK: really dubious code. */ page = (void *)~0UL; @@ -525,8 +526,10 @@ static void *i460_alloc_page (struct agp_bridge_data *bridge) static void i460_destroy_page (void *page) { - if (I460_IO_PAGE_SHIFT <= PAGE_SHIFT) + if (I460_IO_PAGE_SHIFT <= PAGE_SHIFT) { agp_generic_destroy_page(page); + global_flush_tlb(); + } } #endif /* I460_LARGE_IO_PAGES */ diff --git a/drivers/char/agp/intel-agp.c b/drivers/char/agp/intel-agp.c index bf4cc9ffd5b1..027161ab88e9 100644 --- a/drivers/char/agp/intel-agp.c +++ b/drivers/char/agp/intel-agp.c @@ -270,6 +270,7 @@ static struct agp_memory *alloc_agpphysmem_i8xx(size_t pg_count, int type) switch (pg_count) { case 1: addr = agp_bridge->driver->agp_alloc_page(agp_bridge); + global_flush_tlb(); break; case 4: /* kludge to get 4 physical pages for ARGB cursor */ @@ -330,9 +331,11 @@ static void intel_i810_free_by_type(struct agp_memory *curr) if(curr->type == AGP_PHYS_MEMORY) { if (curr->page_count == 4) i8xx_destroy_pages(gart_to_virt(curr->memory[0])); - else + else { agp_bridge->driver->agp_destroy_page( gart_to_virt(curr->memory[0])); + global_flush_tlb(); + } vfree(curr->memory); } kfree(curr); |