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intel-gtt: kill mask_memory functions

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That indirection mess can now go. Add a dummy i81x gtt_driver to
avoid a NULL pointer check.

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Daniel Vetter 2010-09-12 12:34:44 +02:00 • committed by Chris Wilson
commit bdd30729b6
1 changed files with 13 additions and 92 deletions
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105
drivers/char/agp/intel-gtt.c
View file

@ -69,20 +69,6 @@ static struct gatt_mask intel_i810_masks[] =
#define INTEL_AGP_CACHED_MEMORY_LLC_MLC 3
#define INTEL_AGP_CACHED_MEMORY_LLC_MLC_GFDT 4
static struct gatt_mask intel_gen6_masks[] =
{
{.mask = I810_PTE_VALID | GEN6_PTE_UNCACHED,
.type = INTEL_AGP_UNCACHED_MEMORY },
{.mask = I810_PTE_VALID | GEN6_PTE_LLC,
.type = INTEL_AGP_CACHED_MEMORY_LLC },
{.mask = I810_PTE_VALID | GEN6_PTE_LLC | GEN6_PTE_GFDT,
.type = INTEL_AGP_CACHED_MEMORY_LLC_GFDT },
{.mask = I810_PTE_VALID | GEN6_PTE_LLC_MLC,
.type = INTEL_AGP_CACHED_MEMORY_LLC_MLC },
{.mask = I810_PTE_VALID | GEN6_PTE_LLC_MLC | GEN6_PTE_GFDT,
.type = INTEL_AGP_CACHED_MEMORY_LLC_MLC_GFDT },
};
struct intel_gtt_driver {
unsigned int gen : 8;
unsigned int is_g33 : 1;
@ -287,34 +273,6 @@ static void i8xx_destroy_pages(struct page *page)
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_gen6_type_to_mask_type(struct agp_bridge_data *bridge,
int type)
{
unsigned int type_mask = type & ~AGP_USER_CACHED_MEMORY_GFDT;
unsigned int gfdt = type & AGP_USER_CACHED_MEMORY_GFDT;
if (type_mask == AGP_USER_UNCACHED_MEMORY)
return INTEL_AGP_UNCACHED_MEMORY;
else if (type_mask == AGP_USER_CACHED_MEMORY_LLC_MLC)
return gfdt ? INTEL_AGP_CACHED_MEMORY_LLC_MLC_GFDT :
INTEL_AGP_CACHED_MEMORY_LLC_MLC;
else /* set 'normal'/'cached' to LLC by default */
return gfdt ? INTEL_AGP_CACHED_MEMORY_LLC_GFDT :
INTEL_AGP_CACHED_MEMORY_LLC;
}
static int intel_i810_insert_entries(struct agp_memory *mem, off_t pg_start,
int type)
{
@ -1290,35 +1248,6 @@ static int i9xx_setup(void)
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)
{
/* gen6 has bit11-4 for physical addr bit39-32 */
addr |= (addr >> 28) & 0xff0;
/* Type checking must be done elsewhere */
return addr | bridge->driver->masks[type].mask;
}
static const struct agp_bridge_driver intel_810_driver = {
.owner = THIS_MODULE,
.aperture_sizes = intel_i810_sizes,
@ -1353,8 +1282,6 @@ static const struct agp_bridge_driver intel_830_driver = {
.configure = intel_fake_agp_configure,
.fetch_size = intel_fake_agp_fetch_size,
.cleanup = intel_gtt_cleanup,
.mask_memory = intel_i810_mask_memory,
.masks = intel_i810_masks,
.agp_enable = intel_fake_agp_enable,
.cache_flush = global_cache_flush,
.create_gatt_table = intel_fake_agp_create_gatt_table,
@ -1367,7 +1294,6 @@ static const struct agp_bridge_driver intel_830_driver = {
.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,
};
@ -1379,8 +1305,6 @@ static const struct agp_bridge_driver intel_915_driver = {
.configure = intel_fake_agp_configure,
.fetch_size = intel_fake_agp_fetch_size,
.cleanup = intel_gtt_cleanup,
.mask_memory = intel_i810_mask_memory,
.masks = intel_i810_masks,
.agp_enable = intel_fake_agp_enable,
.cache_flush = global_cache_flush,
.create_gatt_table = intel_fake_agp_create_gatt_table,
@ -1393,7 +1317,6 @@ static const struct agp_bridge_driver intel_915_driver = {
.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,
};
@ -1405,8 +1328,6 @@ static const struct agp_bridge_driver intel_i965_driver = {
.configure = intel_fake_agp_configure,
.fetch_size = intel_fake_agp_fetch_size,
.cleanup = intel_gtt_cleanup,
.mask_memory = intel_i965_mask_memory,
.masks = intel_i810_masks,
.agp_enable = intel_fake_agp_enable,
.cache_flush = global_cache_flush,
.create_gatt_table = intel_fake_agp_create_gatt_table,
@ -1419,7 +1340,6 @@ static const struct agp_bridge_driver intel_i965_driver = {
.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,
};
@ -1431,8 +1351,6 @@ static const struct agp_bridge_driver intel_gen6_driver = {
.configure = intel_fake_agp_configure,
.fetch_size = intel_fake_agp_fetch_size,
.cleanup = intel_gtt_cleanup,
.mask_memory = intel_gen6_mask_memory,
.masks = intel_gen6_masks,
.agp_enable = intel_fake_agp_enable,
.cache_flush = global_cache_flush,
.create_gatt_table = intel_fake_agp_create_gatt_table,
@ -1445,7 +1363,6 @@ static const struct agp_bridge_driver intel_gen6_driver = {
.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_gen6_type_to_mask_type,
.chipset_flush = intel_i915_chipset_flush,
};
@ -1457,8 +1374,6 @@ static const struct agp_bridge_driver intel_g33_driver = {
.configure = intel_fake_agp_configure,
.fetch_size = intel_fake_agp_fetch_size,
.cleanup = intel_gtt_cleanup,
.mask_memory = intel_i965_mask_memory,
.masks = intel_i810_masks,
.agp_enable = intel_fake_agp_enable,
.cache_flush = global_cache_flush,
.create_gatt_table = intel_fake_agp_create_gatt_table,
@ -1471,10 +1386,12 @@ static const struct agp_bridge_driver intel_g33_driver = {
.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,
};
static const struct intel_gtt_driver i81x_gtt_driver = {
.gen = 1,
};
static const struct intel_gtt_driver i8xx_gtt_driver = {
.gen = 2,
.setup = i830_setup,
@ -1538,10 +1455,14 @@ static const struct intel_gtt_driver_description {
const struct agp_bridge_driver *gmch_driver;
const struct intel_gtt_driver *gtt_driver;
} intel_gtt_chipsets[] = {
{ PCI_DEVICE_ID_INTEL_82810_IG1, "i810", &intel_810_driver , NULL},
{ PCI_DEVICE_ID_INTEL_82810_IG3, "i810", &intel_810_driver , NULL},
{ PCI_DEVICE_ID_INTEL_82810E_IG, "i810", &intel_810_driver , NULL},
{ PCI_DEVICE_ID_INTEL_82815_CGC, "i815", &intel_810_driver , NULL},
{ PCI_DEVICE_ID_INTEL_82810_IG1, "i810", &intel_810_driver,
&i81x_gtt_driver},
{ PCI_DEVICE_ID_INTEL_82810_IG3, "i810", &intel_810_driver,
&i81x_gtt_driver},
{ PCI_DEVICE_ID_INTEL_82810E_IG, "i810", &intel_810_driver,
&i81x_gtt_driver},
{ PCI_DEVICE_ID_INTEL_82815_CGC, "i815", &intel_810_driver,
&i81x_gtt_driver},
{ PCI_DEVICE_ID_INTEL_82830_CGC, "830M",
&intel_830_driver , &i8xx_gtt_driver},
{ PCI_DEVICE_ID_INTEL_82845G_IG, "830M",
@ -1664,9 +1585,9 @@ int intel_gmch_probe(struct pci_dev *pdev,
dev_info(&pdev->dev, "Intel %s Chipset\n", intel_gtt_chipsets[i].name);
if (bridge->driver->mask_memory == intel_gen6_mask_memory)
if (intel_private.driver->write_entry == gen6_write_entry)
mask = 40;
else if (bridge->driver->mask_memory == intel_i965_mask_memory)
else if (intel_private.driver->write_entry == i965_write_entry)
mask = 36;
else
mask = 32;