agp/intel: Support the extended physical addressing bits on Sandybridge.

Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
[anholt: Split this patch out of a larger patch for Sandybridge fixes]
Signed-off-by: Eric Anholt <eric@anholt.net>

diff --git a/drivers/char/agp/intel-agp.c b/drivers/char/agp/intel-agp.c
index d836a71..5bbc7be 100644 (file)
--- a/drivers/char/agp/intel-agp.c
+++ b/drivers/char/agp/intel-agp.c
@@ -816,9 +816,9 @@ static const struct intel_driver_description {
        { PCI_DEVICE_ID_INTEL_IRONLAKE_MC2_HB, PCI_DEVICE_ID_INTEL_IRONLAKE_M_IG,
            "HD Graphics", NULL, &intel_i965_driver },
        { PCI_DEVICE_ID_INTEL_SANDYBRIDGE_HB, PCI_DEVICE_ID_INTEL_SANDYBRIDGE_IG,
-           "Sandybridge", NULL, &intel_i965_driver },
+           "Sandybridge", NULL, &intel_gen6_driver },
        { PCI_DEVICE_ID_INTEL_SANDYBRIDGE_M_HB, PCI_DEVICE_ID_INTEL_SANDYBRIDGE_M_IG,
-           "Sandybridge", NULL, &intel_i965_driver },
+           "Sandybridge", NULL, &intel_gen6_driver },
        { 0, 0, NULL, NULL, NULL }
 };
 

diff --git a/drivers/char/agp/intel-gtt.c b/drivers/char/agp/intel-gtt.c
index f97122a..2b1a0e9 100644 (file)
--- a/drivers/char/agp/intel-gtt.c
+++ b/drivers/char/agp/intel-gtt.c
@@ -1315,6 +1315,16 @@ static unsigned long intel_i965_mask_memory(struct agp_bridge_data *bridge,
        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)
+{
+       /* Shift high bits down */
+       addr |= (addr >> 28) & 0xff;
+
+       /* Type checking must be done elsewhere */
+       return addr | bridge->driver->masks[type].mask;
+}
+
 static void intel_i965_get_gtt_range(int *gtt_offset, int *gtt_size)
 {
        u16 snb_gmch_ctl;
@@ -1528,6 +1538,39 @@ static const struct agp_bridge_driver intel_i965_driver = {
 #endif
 };
 
+static const struct agp_bridge_driver intel_gen6_driver = {
+       .owner                  = THIS_MODULE,
+       .aperture_sizes         = intel_i830_sizes,
+       .size_type              = FIXED_APER_SIZE,
+       .num_aperture_sizes     = 4,
+       .needs_scratch_page     = true,
+       .configure              = intel_i9xx_configure,
+       .fetch_size             = intel_i9xx_fetch_size,
+       .cleanup                = intel_i915_cleanup,
+       .mask_memory            = intel_gen6_mask_memory,
+       .masks                  = intel_i810_masks,
+       .agp_enable             = intel_i810_agp_enable,
+       .cache_flush            = global_cache_flush,
+       .create_gatt_table      = intel_i965_create_gatt_table,
+       .free_gatt_table        = intel_i830_free_gatt_table,
+       .insert_memory          = intel_i915_insert_entries,
+       .remove_memory          = intel_i915_remove_entries,
+       .alloc_by_type          = intel_i830_alloc_by_type,
+       .free_by_type           = intel_i810_free_by_type,
+       .agp_alloc_page         = agp_generic_alloc_page,
+       .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,
+#ifdef USE_PCI_DMA_API
+       .agp_map_page           = intel_agp_map_page,
+       .agp_unmap_page         = intel_agp_unmap_page,
+       .agp_map_memory         = intel_agp_map_memory,
+       .agp_unmap_memory       = intel_agp_unmap_memory,
+#endif
+};
+
 static const struct agp_bridge_driver intel_g33_driver = {
        .owner                  = THIS_MODULE,
        .aperture_sizes         = intel_i830_sizes,