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| author | Daniel Vetter <daniel.vetter@ffwll.ch> | 2010-09-07 22:41:04 +0200 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2010-09-21 11:35:18 +0100 |
| commit | 351bb278d2fd2df93526c15f37500070347328b4 (patch) | |
| tree | 9e351eac4867c206f273e121ab061b0d62ec931f /drivers/char/agp/intel-gtt.c | |
| parent | 0e87d2b06cb4651c874d0b208d31c73addbd638b (diff) | |
| download | linux-351bb278d2fd2df93526c15f37500070347328b4.tar.bz2 | |
intel-gtt: introduce pte write function for i8xx/i915/i945
And put it to use in the gtt configuration code that writes
the scratch page addr in all gtt ptes. This makes intel_i830_configure
generic, hence rename it to intel_fake_agp_configure.
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Diffstat (limited to 'drivers/char/agp/intel-gtt.c')
| -rw-r--r-- | drivers/char/agp/intel-gtt.c | 41 |
1 files changed, 32 insertions, 9 deletions
diff --git a/drivers/char/agp/intel-gtt.c b/drivers/char/agp/intel-gtt.c index e386a44330b8..4d768e085382 100644 --- a/drivers/char/agp/intel-gtt.c +++ b/drivers/char/agp/intel-gtt.c @@ -90,6 +90,10 @@ struct intel_gtt_driver { unsigned int is_ironlake : 1; /* Chipset specific GTT setup */ int (*setup)(void); + void (*write_entry)(dma_addr_t addr, unsigned int entry, unsigned int flags); + /* Flags is a more or less chipset specific opaque value. + * For chipsets that need to support old ums (non-gem) code, this + * needs to be identical to the various supported agp memory types! */ }; static struct _intel_private { @@ -954,6 +958,23 @@ static void intel_i830_chipset_flush(struct agp_bridge_data *bridge) printk(KERN_ERR "Timed out waiting for cache flush.\n"); } +static void i830_write_entry(dma_addr_t addr, unsigned int entry, + unsigned int flags) +{ + u32 pte_flags = I810_PTE_VALID; + + switch (flags) { + case AGP_DCACHE_MEMORY: + pte_flags |= I810_PTE_LOCAL; + break; + case AGP_USER_CACHED_MEMORY: + pte_flags |= I830_PTE_SYSTEM_CACHED; + break; + } + + writel(addr | pte_flags, intel_private.gtt + entry); +} + static void intel_enable_gtt(void) { u32 gma_addr; @@ -1011,7 +1032,7 @@ static int intel_fake_agp_free_gatt_table(struct agp_bridge_data *bridge) return 0; } -static int intel_i830_configure(void) +static int intel_fake_agp_configure(void) { int i; @@ -1019,13 +1040,12 @@ static int intel_i830_configure(void) agp_bridge->gart_bus_addr = intel_private.gma_bus_addr; - if (agp_bridge->driver->needs_scratch_page) { - for (i = intel_private.base.gtt_stolen_entries; - i < intel_private.base.gtt_total_entries; i++) { - writel(agp_bridge->scratch_page, intel_private.gtt+i); - } - readl(intel_private.gtt+i-1); /* PCI Posting. */ + for (i = intel_private.base.gtt_stolen_entries; + i < intel_private.base.gtt_total_entries; i++) { + intel_private.driver->write_entry(intel_private.scratch_page_dma, + i, 0); } + readl(intel_private.gtt+i-1); /* PCI Posting. */ global_cache_flush(); @@ -1417,7 +1437,7 @@ static const struct agp_bridge_driver intel_830_driver = { .aperture_sizes = intel_fake_agp_sizes, .num_aperture_sizes = ARRAY_SIZE(intel_fake_agp_sizes), .needs_scratch_page = true, - .configure = intel_i830_configure, + .configure = intel_fake_agp_configure, .fetch_size = intel_fake_agp_fetch_size, .cleanup = intel_gtt_cleanup, .mask_memory = intel_i810_mask_memory, @@ -1444,7 +1464,7 @@ static const struct agp_bridge_driver intel_915_driver = { .aperture_sizes = intel_fake_agp_sizes, .num_aperture_sizes = ARRAY_SIZE(intel_fake_agp_sizes), .needs_scratch_page = true, - .configure = intel_i9xx_configure, + .configure = intel_fake_agp_configure, .fetch_size = intel_fake_agp_fetch_size, .cleanup = intel_gtt_cleanup, .mask_memory = intel_i810_mask_memory, @@ -1573,10 +1593,13 @@ static const struct agp_bridge_driver intel_g33_driver = { static const struct intel_gtt_driver i8xx_gtt_driver = { .gen = 2, .setup = i830_setup, + .write_entry = i830_write_entry, }; static const struct intel_gtt_driver i915_gtt_driver = { .gen = 3, .setup = i9xx_setup, + /* i945 is the last gpu to need phys mem (for overlay and cursors). */ + .write_entry = i830_write_entry, }; static const struct intel_gtt_driver g33_gtt_driver = { .gen = 3, |