[PATCH 16/26] agp/intel: add ValleyView AGP driver

[Jesse Barnes <jbarnes@virtuousgeek.org>]

But don't bind the PCI ID yet.

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
---
 drivers/char/agp/intel-agp.c |    1 +
 drivers/char/agp/intel-agp.h |    3 +++
 drivers/char/agp/intel-gtt.c |   23 +++++++++++++++++++++++
 3 files changed, 27 insertions(+), 0 deletions(-)

diff --git a/drivers/char/agp/intel-agp.c b/drivers/char/agp/intel-agp.c
index 962e75d..74c2d92 100644
--- a/drivers/char/agp/intel-agp.c
+++ b/drivers/char/agp/intel-agp.c
@@ -907,6 +907,7 @@ static struct pci_device_id agp_intel_pci_table[] = {
 	ID(PCI_DEVICE_ID_INTEL_IVYBRIDGE_HB),
 	ID(PCI_DEVICE_ID_INTEL_IVYBRIDGE_M_HB),
 	ID(PCI_DEVICE_ID_INTEL_IVYBRIDGE_S_HB),
+	ID(PCI_DEVICE_ID_INTEL_VALLEYVIEW_HB),
 	{ }
 };
 
diff --git a/drivers/char/agp/intel-agp.h b/drivers/char/agp/intel-agp.h
index 5da67f1..41d9ee1 100644
--- a/drivers/char/agp/intel-agp.h
+++ b/drivers/char/agp/intel-agp.h
@@ -96,6 +96,7 @@
 #define G4x_GMCH_SIZE_VT_2M	(G4x_GMCH_SIZE_2M | G4x_GMCH_SIZE_VT_EN)
 
 #define GFX_FLSH_CNTL		0x2170 /* 915+ */
+#define GFX_FLSH_CNTL_VLV	0x101008
 
 #define I810_DRAM_CTL		0x3000
 #define I810_DRAM_ROW_0		0x00000001
@@ -234,6 +235,8 @@
 #define PCI_DEVICE_ID_INTEL_IVYBRIDGE_M_GT2_IG		0x0166
 #define PCI_DEVICE_ID_INTEL_IVYBRIDGE_S_HB		0x0158  /* Server */
 #define PCI_DEVICE_ID_INTEL_IVYBRIDGE_S_GT1_IG		0x015A
+#define PCI_DEVICE_ID_INTEL_VALLEYVIEW_HB		0x0F00 /* VLV1 */
+#define PCI_DEVICE_ID_INTEL_VALLEYVIEW_IG		0x0F30
 
 int intel_gmch_probe(struct pci_dev *pdev,
 			       struct agp_bridge_data *bridge);
diff --git a/drivers/char/agp/intel-gtt.c b/drivers/char/agp/intel-gtt.c
index 269cb02..ccc0045 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
-- 
1.7.5.4