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Commit bdd30729 authored by Daniel Vetter's avatar Daniel Vetter Committed by Chris Wilson
Browse files

intel-gtt: kill mask_memory functions 



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

Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
parent 90cb149e

drivers/char/agp/intel-gtt.c

+13 −92
Original line number Diff line number Diff line
@@ -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;