intel-gtt: introduce intel_gtt_driver

Same idea as INTEL_INFO from drm/i915. This
- reduces the dependancy on agp_driver
- stops the what-does-IS_I965G-mean confusion (here it's just gen4, in
  drm/i915 it's gen >=4)
- further prepares the separation of the fake agp driver from the rest.

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

1 files changed, 120 insertions, 47 deletions

diff --git a/drivers/char/agp/intel-gtt.c b/drivers/char/agp/intel-gtt.c
index 3b84d8445a43..831f3c527bdf 100644
--- a/drivers/char/agp/intel-gtt.c
+++ b/drivers/char/agp/intel-gtt.c
@@ -81,8 +81,16 @@ static struct gatt_mask intel_gen6_masks[] =
          .type = INTEL_AGP_CACHED_MEMORY_LLC_MLC_GFDT },
 };
 
+struct intel_gtt_driver {
+        unsigned int gen : 8;
+        unsigned int is_g33 : 1;
+        unsigned int is_pineview : 1;
+        unsigned int is_ironlake : 1;
+};
+
 static struct _intel_private {
         struct intel_gtt base;
+        const struct intel_gtt_driver *driver;
         struct pci_dev *pcidev; /* device one */
         struct pci_dev *bridge_dev;
         u8 __iomem *registers;
@@ -97,6 +105,11 @@ static struct _intel_private {
         int resource_valid;
 } intel_private;
 
+#define INTEL_GTT_GEN   intel_private.driver->gen
+#define IS_G33          intel_private.driver->is_g33
+#define IS_PINEVIEW     intel_private.driver->is_pineview
+#define IS_IRONLAKE     intel_private.driver->is_ironlake
+
 #ifdef USE_PCI_DMA_API
 static int intel_agp_map_page(struct page *page, dma_addr_t *ret)
 {
@@ -543,7 +556,7 @@ static unsigned int intel_gtt_stolen_entries(void)
         pci_read_config_word(intel_private.bridge_dev,
                              I830_GMCH_CTRL, &gmch_ctrl);
 
-        if (IS_G4X || IS_PINEVIEW)
+        if (INTEL_GTT_GEN > 4 || IS_PINEVIEW)
                 overhead_entries = 0;
         else
                 overhead_entries = intel_private.base.gtt_mappable_entries
@@ -573,7 +586,7 @@ static unsigned int intel_gtt_stolen_entries(void)
                         stolen_size = 0;
                         break;
                 }
-        } else if (IS_SNB) {
+        } else if (INTEL_GTT_GEN == 6) {
                 /*
                  * SandyBridge has new memory control reg at 0x50.w
                  */
@@ -700,7 +713,7 @@ static unsigned int intel_gtt_total_entries(void)
 {
         int size;
 
-        if (IS_G33 || IS_I965 || IS_G4X) {
+        if (IS_G33 || INTEL_GTT_GEN >= 4) {
                 u32 pgetbl_ctl;
                 pgetbl_ctl = readl(intel_private.registers+I810_PGETBL_CTL);
 
@@ -1086,7 +1099,7 @@ static void intel_i9xx_setup_flush(void)
         if (intel_private.ifp_resource.start)
                 return;
 
-        if (IS_SNB)
+        if (INTEL_GTT_GEN == 6)
                 return;
 
         /* setup a resource for this object */
@@ -1094,7 +1107,7 @@ static void intel_i9xx_setup_flush(void)
         intel_private.ifp_resource.flags = IORESOURCE_MEM;
 
         /* Setup chipset flush for 915 */
-        if (IS_I965 || IS_G33 || IS_G4X) {
+        if (IS_G33 || INTEL_GTT_GEN >= 4) {
                 intel_i965_g33_setup_chipset_flush();
         } else {
                 intel_i915_setup_chipset_flush();
@@ -1196,7 +1209,8 @@ static int intel_i915_insert_entries(struct agp_memory *mem, off_t pg_start,
 
         mask_type = agp_bridge->driver->agp_type_to_mask_type(agp_bridge, type);
 
-        if (!IS_SNB && mask_type != 0 && mask_type != AGP_PHYS_MEMORY &&
+        if (INTEL_GTT_GEN != 6 && mask_type != 0 &&
+            mask_type != AGP_PHYS_MEMORY &&
             mask_type != INTEL_AGP_CACHED_MEMORY)
                 goto out_err;
 
@@ -1631,6 +1645,34 @@ static const struct agp_bridge_driver intel_g33_driver = {
 #endif
 };
 
+static const struct intel_gtt_driver i8xx_gtt_driver = {
+        .gen = 2,
+};
+static const struct intel_gtt_driver i915_gtt_driver = {
+        .gen = 3,
+};
+static const struct intel_gtt_driver g33_gtt_driver = {
+        .gen = 3,
+        .is_g33 = 1,
+};
+static const struct intel_gtt_driver pineview_gtt_driver = {
+        .gen = 3,
+        .is_pineview = 1, .is_g33 = 1,
+};
+static const struct intel_gtt_driver i965_gtt_driver = {
+        .gen = 4,
+};
+static const struct intel_gtt_driver g4x_gtt_driver = {
+        .gen = 5,
+};
+static const struct intel_gtt_driver ironlake_gtt_driver = {
+        .gen = 5,
+        .is_ironlake = 1,
+};
+static const struct intel_gtt_driver sandybridge_gtt_driver = {
+        .gen = 6,
+};
+
 /* 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
  * which one should be used if a gmch_chip_id is present.
@@ -1639,57 +1681,86 @@ static const struct intel_gtt_driver_description {
         unsigned int gmch_chip_id;
         char *name;
         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 },
-        { PCI_DEVICE_ID_INTEL_82810_IG3, "i810", &intel_810_driver },
-        { PCI_DEVICE_ID_INTEL_82810E_IG, "i810", &intel_810_driver },
-        { PCI_DEVICE_ID_INTEL_82815_CGC, "i815", &intel_810_driver },
-        { PCI_DEVICE_ID_INTEL_82830_CGC, "830M", &intel_830_driver },
-        { PCI_DEVICE_ID_INTEL_82845G_IG, "830M", &intel_830_driver },
-        { PCI_DEVICE_ID_INTEL_82854_IG, "854", &intel_830_driver },
-        { PCI_DEVICE_ID_INTEL_82855GM_IG, "855GM", &intel_830_driver },
-        { PCI_DEVICE_ID_INTEL_82865_IG, "865", &intel_830_driver },
-        { PCI_DEVICE_ID_INTEL_E7221_IG, "E7221 (i915)", &intel_915_driver },
-        { PCI_DEVICE_ID_INTEL_82915G_IG, "915G", &intel_915_driver },
-        { PCI_DEVICE_ID_INTEL_82915GM_IG, "915GM", &intel_915_driver },
-        { PCI_DEVICE_ID_INTEL_82945G_IG, "945G", &intel_915_driver },
-        { PCI_DEVICE_ID_INTEL_82945GM_IG, "945GM", &intel_915_driver },
-        { PCI_DEVICE_ID_INTEL_82945GME_IG, "945GME", &intel_915_driver },
-        { PCI_DEVICE_ID_INTEL_82946GZ_IG, "946GZ", &intel_i965_driver },
-        { PCI_DEVICE_ID_INTEL_82G35_IG, "G35", &intel_i965_driver },
-        { PCI_DEVICE_ID_INTEL_82965Q_IG, "965Q", &intel_i965_driver },
-        { PCI_DEVICE_ID_INTEL_82965G_IG, "965G", &intel_i965_driver },
-        { PCI_DEVICE_ID_INTEL_82965GM_IG, "965GM", &intel_i965_driver },
-        { PCI_DEVICE_ID_INTEL_82965GME_IG, "965GME/GLE", &intel_i965_driver },
-        { PCI_DEVICE_ID_INTEL_G33_IG, "G33", &intel_g33_driver },
-        { PCI_DEVICE_ID_INTEL_Q35_IG, "Q35", &intel_g33_driver },
-        { PCI_DEVICE_ID_INTEL_Q33_IG, "Q33", &intel_g33_driver },
-        { PCI_DEVICE_ID_INTEL_PINEVIEW_M_IG, "GMA3150", &intel_g33_driver },
-        { PCI_DEVICE_ID_INTEL_PINEVIEW_IG, "GMA3150", &intel_g33_driver },
-        { PCI_DEVICE_ID_INTEL_GM45_IG, "GM45", &intel_i965_driver },
-        { PCI_DEVICE_ID_INTEL_EAGLELAKE_IG, "Eaglelake", &intel_i965_driver },
-        { PCI_DEVICE_ID_INTEL_Q45_IG, "Q45/Q43", &intel_i965_driver },
-        { PCI_DEVICE_ID_INTEL_G45_IG, "G45/G43", &intel_i965_driver },
-        { PCI_DEVICE_ID_INTEL_B43_IG, "B43", &intel_i965_driver },
-        { PCI_DEVICE_ID_INTEL_G41_IG, "G41", &intel_i965_driver },
+        { 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_82830_CGC, "830M",
+                &intel_830_driver , &i8xx_gtt_driver},
+        { PCI_DEVICE_ID_INTEL_82845G_IG, "830M",
+                &intel_830_driver , &i8xx_gtt_driver},
+        { PCI_DEVICE_ID_INTEL_82854_IG, "854",
+                &intel_830_driver , &i8xx_gtt_driver},
+        { PCI_DEVICE_ID_INTEL_82855GM_IG, "855GM",
+                &intel_830_driver , &i8xx_gtt_driver},
+        { PCI_DEVICE_ID_INTEL_82865_IG, "865",
+                &intel_830_driver , &i8xx_gtt_driver},
+        { PCI_DEVICE_ID_INTEL_E7221_IG, "E7221 (i915)",
+                &intel_915_driver , &i915_gtt_driver },
+        { PCI_DEVICE_ID_INTEL_82915G_IG, "915G",
+                &intel_915_driver , &i915_gtt_driver },
+        { PCI_DEVICE_ID_INTEL_82915GM_IG, "915GM",
+                &intel_915_driver , &i915_gtt_driver },
+        { PCI_DEVICE_ID_INTEL_82945G_IG, "945G",
+                &intel_915_driver , &i915_gtt_driver },
+        { PCI_DEVICE_ID_INTEL_82945GM_IG, "945GM",
+                &intel_915_driver , &i915_gtt_driver },
+        { PCI_DEVICE_ID_INTEL_82945GME_IG, "945GME",
+                &intel_915_driver , &i915_gtt_driver },
+        { PCI_DEVICE_ID_INTEL_82946GZ_IG, "946GZ",
+                &intel_i965_driver , &i965_gtt_driver },
+        { PCI_DEVICE_ID_INTEL_82G35_IG, "G35",
+                &intel_i965_driver , &i965_gtt_driver },
+        { PCI_DEVICE_ID_INTEL_82965Q_IG, "965Q",
+                &intel_i965_driver , &i965_gtt_driver },
+        { PCI_DEVICE_ID_INTEL_82965G_IG, "965G",
+                &intel_i965_driver , &i965_gtt_driver },
+        { PCI_DEVICE_ID_INTEL_82965GM_IG, "965GM",
+                &intel_i965_driver , &i965_gtt_driver },
+        { PCI_DEVICE_ID_INTEL_82965GME_IG, "965GME/GLE",
+                &intel_i965_driver , &i965_gtt_driver },
+        { PCI_DEVICE_ID_INTEL_G33_IG, "G33",
+                &intel_g33_driver , &g33_gtt_driver },
+        { PCI_DEVICE_ID_INTEL_Q35_IG, "Q35",
+                &intel_g33_driver , &g33_gtt_driver },
+        { PCI_DEVICE_ID_INTEL_Q33_IG, "Q33",
+                &intel_g33_driver , &g33_gtt_driver },
+        { PCI_DEVICE_ID_INTEL_PINEVIEW_M_IG, "GMA3150",
+                &intel_g33_driver , &pineview_gtt_driver },
+        { PCI_DEVICE_ID_INTEL_PINEVIEW_IG, "GMA3150",
+                &intel_g33_driver , &pineview_gtt_driver },
+        { PCI_DEVICE_ID_INTEL_GM45_IG, "GM45",
+                &intel_i965_driver , &g4x_gtt_driver },
+        { PCI_DEVICE_ID_INTEL_EAGLELAKE_IG, "Eaglelake",
+                &intel_i965_driver , &g4x_gtt_driver },
+        { PCI_DEVICE_ID_INTEL_Q45_IG, "Q45/Q43",
+                &intel_i965_driver , &g4x_gtt_driver },
+        { PCI_DEVICE_ID_INTEL_G45_IG, "G45/G43",
+                &intel_i965_driver , &g4x_gtt_driver },
+        { PCI_DEVICE_ID_INTEL_B43_IG, "B43",
+                &intel_i965_driver , &g4x_gtt_driver },
+        { PCI_DEVICE_ID_INTEL_G41_IG, "G41",
+                &intel_i965_driver , &g4x_gtt_driver },
         { PCI_DEVICE_ID_INTEL_IRONLAKE_D_IG,
-            "HD Graphics", &intel_i965_driver },
+            "HD Graphics", &intel_i965_driver , &ironlake_gtt_driver },
         { PCI_DEVICE_ID_INTEL_IRONLAKE_M_IG,
-            "HD Graphics", &intel_i965_driver },
+            "HD Graphics", &intel_i965_driver , &ironlake_gtt_driver },
         { PCI_DEVICE_ID_INTEL_SANDYBRIDGE_GT1_IG,
-            "Sandybridge", &intel_gen6_driver },
+            "Sandybridge", &intel_gen6_driver , &sandybridge_gtt_driver },
         { PCI_DEVICE_ID_INTEL_SANDYBRIDGE_GT2_IG,
-            "Sandybridge", &intel_gen6_driver },
+            "Sandybridge", &intel_gen6_driver , &sandybridge_gtt_driver },
         { PCI_DEVICE_ID_INTEL_SANDYBRIDGE_GT2_PLUS_IG,
-            "Sandybridge", &intel_gen6_driver },
+            "Sandybridge", &intel_gen6_driver , &sandybridge_gtt_driver },
         { PCI_DEVICE_ID_INTEL_SANDYBRIDGE_M_GT1_IG,
-            "Sandybridge", &intel_gen6_driver },
+            "Sandybridge", &intel_gen6_driver , &sandybridge_gtt_driver },
         { PCI_DEVICE_ID_INTEL_SANDYBRIDGE_M_GT2_IG,
-            "Sandybridge", &intel_gen6_driver },
+            "Sandybridge", &intel_gen6_driver , &sandybridge_gtt_driver },
         { PCI_DEVICE_ID_INTEL_SANDYBRIDGE_M_GT2_PLUS_IG,
-            "Sandybridge", &intel_gen6_driver },
+            "Sandybridge", &intel_gen6_driver , &sandybridge_gtt_driver },
         { PCI_DEVICE_ID_INTEL_SANDYBRIDGE_S_IG,
-            "Sandybridge", &intel_gen6_driver },
+            "Sandybridge", &intel_gen6_driver , &sandybridge_gtt_driver },
         { 0, NULL, NULL }
 };
 
@@ -1720,6 +1791,8 @@ int intel_gmch_probe(struct pci_dev *pdev,
                 if (find_gmch(intel_gtt_chipsets[i].gmch_chip_id)) {
                         bridge->driver =
                                 intel_gtt_chipsets[i].gmch_driver;
+                        intel_private.driver = 
+                                intel_gtt_chipsets[i].gtt_driver;
                         break;
                 }
         }