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authorJesse Barnes <jbarnes@virtuousgeek.org>2012-03-28 13:39:34 -0700
committerDaniel Vetter <daniel.vetter@ffwll.ch>2012-03-29 00:07:38 +0200
commit64757876215fcc515403639fa0bd19e8da7ab06b (patch)
treed0d9c58d6ea73a50181b62f431a1e517a7816643 /drivers/char/agp/intel-gtt.c
parent4b60d29ee00cb2114075e8b5c2c23928bbd76c28 (diff)
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agp/intel: add ValleyView AGP driver
... and bind it right to the PCI id. Note that there are still a few things to fix here: - we need to move the tlb flush to a better place in drm/i915. - we need to check snoop support on vlv and implement it. Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> [danvet: squash follow-on patch and add todo items to commit msg.] Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/char/agp/intel-gtt.c')
-rw-r--r--drivers/char/agp/intel-gtt.c25
1 files changed, 25 insertions, 0 deletions
diff --git a/drivers/char/agp/intel-gtt.c b/drivers/char/agp/intel-gtt.c
index 269cb0287b10..08336ba18cac 100644
--- a/drivers/char/agp/intel-gtt.c
+++ b/drivers/char/agp/intel-gtt.c
@@ -1179,6 +1179,20 @@ static void gen6_write_entry(dma_addr_t addr, unsigned int entry,
writel(addr | pte_flags, intel_private.gtt + entry);
}
+static void valleyview_write_entry(dma_addr_t addr, unsigned int entry,
+ unsigned int flags)
+{
+ u32 pte_flags;
+
+ pte_flags = GEN6_PTE_UNCACHED | I810_PTE_VALID;
+
+ /* gen6 has bit11-4 for physical addr bit39-32 */
+ addr |= (addr >> 28) & 0xff0;
+ writel(addr | pte_flags, intel_private.gtt + entry);
+
+ writel(1, intel_private.registers + GFX_FLSH_CNTL_VLV);
+}
+
static void gen6_cleanup(void)
{
}
@@ -1359,6 +1373,15 @@ static const struct intel_gtt_driver sandybridge_gtt_driver = {
.check_flags = gen6_check_flags,
.chipset_flush = i9xx_chipset_flush,
};
+static const struct intel_gtt_driver valleyview_gtt_driver = {
+ .gen = 7,
+ .setup = i9xx_setup,
+ .cleanup = gen6_cleanup,
+ .write_entry = valleyview_write_entry,
+ .dma_mask_size = 40,
+ .check_flags = gen6_check_flags,
+ .chipset_flush = i9xx_chipset_flush,
+};
/* Table to describe Intel GMCH and AGP/PCIE GART drivers. At least one of
* driver and gmch_driver must be non-null, and find_gmch will determine
@@ -1463,6 +1486,8 @@ static const struct intel_gtt_driver_description {
"Ivybridge", &sandybridge_gtt_driver },
{ PCI_DEVICE_ID_INTEL_IVYBRIDGE_S_GT1_IG,
"Ivybridge", &sandybridge_gtt_driver },
+ { PCI_DEVICE_ID_INTEL_VALLEYVIEW_IG,
+ "ValleyView", &valleyview_gtt_driver },
{ 0, NULL, NULL }
};