drm/i915: INTEL_INFO->gen supercedes i8xx, i9xx, i965g
[deliverable/linux.git] / drivers / gpu / drm / i915 / i915_dma.c
index a693b27f3df4c0c08a218feae01bde7c27b154a6..9977a0a5308a0eb8e8be6e2ff51b6619280265bd 100644 (file)
@@ -63,7 +63,7 @@ static int i915_init_phys_hws(struct drm_device *dev)
 
        memset(dev_priv->render_ring.status_page.page_addr, 0, PAGE_SIZE);
 
-       if (IS_I965G(dev))
+       if (INTEL_INFO(dev)->gen >= 4)
                dev_priv->dma_status_page |= (dev_priv->dma_status_page >> 28) &
                                             0xf0;
 
@@ -376,7 +376,7 @@ i915_emit_box(struct drm_device *dev,
                return -EINVAL;
        }
 
-       if (IS_I965G(dev)) {
+       if (INTEL_INFO(dev)->gen >= 4) {
                BEGIN_LP_RING(4);
                OUT_RING(GFX_OP_DRAWRECT_INFO_I965);
                OUT_RING((box.x1 & 0xffff) | (box.y1 << 16));
@@ -480,7 +480,7 @@ static int i915_dispatch_batchbuffer(struct drm_device * dev,
 
                if (!IS_I830(dev) && !IS_845G(dev)) {
                        BEGIN_LP_RING(2);
-                       if (IS_I965G(dev)) {
+                       if (INTEL_INFO(dev)->gen >= 4) {
                                OUT_RING(MI_BATCH_BUFFER_START | (2 << 6) | MI_BATCH_NON_SECURE_I965);
                                OUT_RING(batch->start);
                        } else {
@@ -887,12 +887,12 @@ static int
 intel_alloc_mchbar_resource(struct drm_device *dev)
 {
        drm_i915_private_t *dev_priv = dev->dev_private;
-       int reg = IS_I965G(dev) ? MCHBAR_I965 : MCHBAR_I915;
+       int reg = INTEL_INFO(dev)->gen >= 4 ? MCHBAR_I965 : MCHBAR_I915;
        u32 temp_lo, temp_hi = 0;
        u64 mchbar_addr;
        int ret;
 
-       if (IS_I965G(dev))
+       if (INTEL_INFO(dev)->gen >= 4)
                pci_read_config_dword(dev_priv->bridge_dev, reg + 4, &temp_hi);
        pci_read_config_dword(dev_priv->bridge_dev, reg, &temp_lo);
        mchbar_addr = ((u64)temp_hi << 32) | temp_lo;
@@ -919,7 +919,7 @@ intel_alloc_mchbar_resource(struct drm_device *dev)
                return ret;
        }
 
-       if (IS_I965G(dev))
+       if (INTEL_INFO(dev)->gen >= 4)
                pci_write_config_dword(dev_priv->bridge_dev, reg + 4,
                                       upper_32_bits(dev_priv->mch_res.start));
 
@@ -933,7 +933,7 @@ static void
 intel_setup_mchbar(struct drm_device *dev)
 {
        drm_i915_private_t *dev_priv = dev->dev_private;
-       int mchbar_reg = IS_I965G(dev) ? MCHBAR_I965 : MCHBAR_I915;
+       int mchbar_reg = INTEL_INFO(dev)->gen >= 4 ? MCHBAR_I965 : MCHBAR_I915;
        u32 temp;
        bool enabled;
 
@@ -970,7 +970,7 @@ static void
 intel_teardown_mchbar(struct drm_device *dev)
 {
        drm_i915_private_t *dev_priv = dev->dev_private;
-       int mchbar_reg = IS_I965G(dev) ? MCHBAR_I965 : MCHBAR_I915;
+       int mchbar_reg = INTEL_INFO(dev)->gen >= 4 ? MCHBAR_I965 : MCHBAR_I915;
        u32 temp;
 
        if (dev_priv->mchbar_need_disable) {
@@ -989,172 +989,6 @@ intel_teardown_mchbar(struct drm_device *dev)
                release_resource(&dev_priv->mch_res);
 }
 
-/**
- * i915_probe_agp - get AGP bootup configuration
- * @pdev: PCI device
- * @aperture_size: returns AGP aperture configured size
- * @preallocated_size: returns size of BIOS preallocated AGP space
- *
- * Since Intel integrated graphics are UMA, the BIOS has to set aside
- * some RAM for the framebuffer at early boot.  This code figures out
- * how much was set aside so we can use it for our own purposes.
- */
-static int i915_probe_agp(struct drm_device *dev, uint32_t *aperture_size,
-                         uint32_t *preallocated_size)
-{
-       struct drm_i915_private *dev_priv = dev->dev_private;
-       u16 tmp = 0;
-       unsigned long overhead;
-       unsigned long stolen;
-
-       /* Get the fb aperture size and "stolen" memory amount. */
-       pci_read_config_word(dev_priv->bridge_dev, INTEL_GMCH_CTRL, &tmp);
-
-       *aperture_size = 1024 * 1024;
-       *preallocated_size = 1024 * 1024;
-
-       switch (dev->pdev->device) {
-       case PCI_DEVICE_ID_INTEL_82830_CGC:
-       case PCI_DEVICE_ID_INTEL_82845G_IG:
-       case PCI_DEVICE_ID_INTEL_82855GM_IG:
-       case PCI_DEVICE_ID_INTEL_82865_IG:
-               if ((tmp & INTEL_GMCH_MEM_MASK) == INTEL_GMCH_MEM_64M)
-                       *aperture_size *= 64;
-               else
-                       *aperture_size *= 128;
-               break;
-       default:
-               /* 9xx supports large sizes, just look at the length */
-               *aperture_size = pci_resource_len(dev->pdev, 2);
-               break;
-       }
-
-       /*
-        * Some of the preallocated space is taken by the GTT
-        * and popup.  GTT is 1K per MB of aperture size, and popup is 4K.
-        */
-       if (IS_G4X(dev) || IS_PINEVIEW(dev) || IS_IRONLAKE(dev) || IS_GEN6(dev))
-               overhead = 4096;
-       else
-               overhead = (*aperture_size / 1024) + 4096;
-
-       if (IS_GEN6(dev)) {
-               /* SNB has memory control reg at 0x50.w */
-               pci_read_config_word(dev->pdev, SNB_GMCH_CTRL, &tmp);
-
-               switch (tmp & SNB_GMCH_GMS_STOLEN_MASK) {
-               case INTEL_855_GMCH_GMS_DISABLED:
-                       DRM_ERROR("video memory is disabled\n");
-                       return -1;
-               case SNB_GMCH_GMS_STOLEN_32M:
-                       stolen = 32 * 1024 * 1024;
-                       break;
-               case SNB_GMCH_GMS_STOLEN_64M:
-                       stolen = 64 * 1024 * 1024;
-                       break;
-               case SNB_GMCH_GMS_STOLEN_96M:
-                       stolen = 96 * 1024 * 1024;
-                       break;
-               case SNB_GMCH_GMS_STOLEN_128M:
-                       stolen = 128 * 1024 * 1024;
-                       break;
-               case SNB_GMCH_GMS_STOLEN_160M:
-                       stolen = 160 * 1024 * 1024;
-                       break;
-               case SNB_GMCH_GMS_STOLEN_192M:
-                       stolen = 192 * 1024 * 1024;
-                       break;
-               case SNB_GMCH_GMS_STOLEN_224M:
-                       stolen = 224 * 1024 * 1024;
-                       break;
-               case SNB_GMCH_GMS_STOLEN_256M:
-                       stolen = 256 * 1024 * 1024;
-                       break;
-               case SNB_GMCH_GMS_STOLEN_288M:
-                       stolen = 288 * 1024 * 1024;
-                       break;
-               case SNB_GMCH_GMS_STOLEN_320M:
-                       stolen = 320 * 1024 * 1024;
-                       break;
-               case SNB_GMCH_GMS_STOLEN_352M:
-                       stolen = 352 * 1024 * 1024;
-                       break;
-               case SNB_GMCH_GMS_STOLEN_384M:
-                       stolen = 384 * 1024 * 1024;
-                       break;
-               case SNB_GMCH_GMS_STOLEN_416M:
-                       stolen = 416 * 1024 * 1024;
-                       break;
-               case SNB_GMCH_GMS_STOLEN_448M:
-                       stolen = 448 * 1024 * 1024;
-                       break;
-               case SNB_GMCH_GMS_STOLEN_480M:
-                       stolen = 480 * 1024 * 1024;
-                       break;
-               case SNB_GMCH_GMS_STOLEN_512M:
-                       stolen = 512 * 1024 * 1024;
-                       break;
-               default:
-                       DRM_ERROR("unexpected GMCH_GMS value: 0x%02x\n",
-                                 tmp & SNB_GMCH_GMS_STOLEN_MASK);
-                       return -1;
-               }
-       } else {
-               switch (tmp & INTEL_GMCH_GMS_MASK) {
-               case INTEL_855_GMCH_GMS_DISABLED:
-                       DRM_ERROR("video memory is disabled\n");
-                       return -1;
-               case INTEL_855_GMCH_GMS_STOLEN_1M:
-                       stolen = 1 * 1024 * 1024;
-                       break;
-               case INTEL_855_GMCH_GMS_STOLEN_4M:
-                       stolen = 4 * 1024 * 1024;
-                       break;
-               case INTEL_855_GMCH_GMS_STOLEN_8M:
-                       stolen = 8 * 1024 * 1024;
-                       break;
-               case INTEL_855_GMCH_GMS_STOLEN_16M:
-                       stolen = 16 * 1024 * 1024;
-                       break;
-               case INTEL_855_GMCH_GMS_STOLEN_32M:
-                       stolen = 32 * 1024 * 1024;
-                       break;
-               case INTEL_915G_GMCH_GMS_STOLEN_48M:
-                       stolen = 48 * 1024 * 1024;
-                       break;
-               case INTEL_915G_GMCH_GMS_STOLEN_64M:
-                       stolen = 64 * 1024 * 1024;
-                       break;
-               case INTEL_GMCH_GMS_STOLEN_128M:
-                       stolen = 128 * 1024 * 1024;
-                       break;
-               case INTEL_GMCH_GMS_STOLEN_256M:
-                       stolen = 256 * 1024 * 1024;
-                       break;
-               case INTEL_GMCH_GMS_STOLEN_96M:
-                       stolen = 96 * 1024 * 1024;
-                       break;
-               case INTEL_GMCH_GMS_STOLEN_160M:
-                       stolen = 160 * 1024 * 1024;
-                       break;
-               case INTEL_GMCH_GMS_STOLEN_224M:
-                       stolen = 224 * 1024 * 1024;
-                       break;
-               case INTEL_GMCH_GMS_STOLEN_352M:
-                       stolen = 352 * 1024 * 1024;
-                       break;
-               default:
-                       DRM_ERROR("unexpected GMCH_GMS value: 0x%02x\n",
-                                 tmp & INTEL_GMCH_GMS_MASK);
-                       return -1;
-               }
-       }
-
-       *preallocated_size = stolen - overhead;
-
-       return 0;
-}
-
 #define PTE_ADDRESS_MASK               0xfffff000
 #define PTE_ADDRESS_MASK_HIGH          0x000000f0 /* i915+ */
 #define PTE_MAPPING_TYPE_UNCACHED      (0 << 1)
@@ -1178,11 +1012,11 @@ static unsigned long i915_gtt_to_phys(struct drm_device *dev,
 {
        unsigned long *gtt;
        unsigned long entry, phys;
-       int gtt_bar = IS_I9XX(dev) ? 0 : 1;
+       int gtt_bar = IS_GEN2(dev) ? 1 : 0;
        int gtt_offset, gtt_size;
 
-       if (IS_I965G(dev)) {
-               if (IS_G4X(dev) || IS_IRONLAKE(dev) || IS_GEN6(dev)) {
+       if (INTEL_INFO(dev)->gen >= 4) {
+               if (IS_G4X(dev) || INTEL_INFO(dev)->gen > 4) {
                        gtt_offset = 2*1024*1024;
                        gtt_size = 2*1024*1024;
                } else {
@@ -1207,10 +1041,8 @@ static unsigned long i915_gtt_to_phys(struct drm_device *dev,
        DRM_DEBUG_DRIVER("GTT addr: 0x%08lx, PTE: 0x%08lx\n", gtt_addr, entry);
 
        /* Mask out these reserved bits on this hardware. */
-       if (!IS_I9XX(dev) || IS_I915G(dev) || IS_I915GM(dev) ||
-           IS_I945G(dev) || IS_I945GM(dev)) {
+       if (INTEL_INFO(dev)->gen < 4 && !IS_G33(dev))
                entry &= ~PTE_ADDRESS_MASK_HIGH;
-       }
 
        /* If it's not a mapping type we know, then bail. */
        if ((entry & PTE_MAPPING_TYPE_MASK) != PTE_MAPPING_TYPE_UNCACHED &&
@@ -1249,7 +1081,7 @@ static void i915_setup_compression(struct drm_device *dev, int size)
        unsigned long ll_base = 0;
 
        /* Leave 1M for line length buffer & misc. */
-       compressed_fb = drm_mm_search_free(&dev_priv->vram, size, 4096, 0);
+       compressed_fb = drm_mm_search_free(&dev_priv->mm.vram, size, 4096, 0);
        if (!compressed_fb) {
                dev_priv->no_fbc_reason = FBC_STOLEN_TOO_SMALL;
                i915_warn_stolen(dev);
@@ -1270,7 +1102,7 @@ static void i915_setup_compression(struct drm_device *dev, int size)
        }
 
        if (!(IS_GM45(dev) || IS_IRONLAKE_M(dev))) {
-               compressed_llb = drm_mm_search_free(&dev_priv->vram, 4096,
+               compressed_llb = drm_mm_search_free(&dev_priv->mm.vram, 4096,
                                                    4096, 0);
                if (!compressed_llb) {
                        i915_warn_stolen(dev);
@@ -1366,8 +1198,8 @@ static int i915_load_modeset_init(struct drm_device *dev,
        struct drm_i915_private *dev_priv = dev->dev_private;
        int ret = 0;
 
-       /* Basic memrange allocator for stolen space (aka vram) */
-       drm_mm_init(&dev_priv->vram, 0, prealloc_size);
+       /* Basic memrange allocator for stolen space (aka mm.vram) */
+       drm_mm_init(&dev_priv->mm.vram, 0, prealloc_size);
        DRM_INFO("set up %ldM of stolen space\n", prealloc_size / (1024*1024));
 
        /* We're off and running w/KMS */
@@ -2065,7 +1897,7 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags)
        dev_priv->info = (struct intel_device_info *) flags;
 
        /* Add register map (needed for suspend/resume) */
-       mmio_bar = IS_I9XX(dev) ? 0 : 1;
+       mmio_bar = IS_GEN2(dev) ? 1 : 0;
        base = pci_resource_start(dev->pdev, mmio_bar);
        size = pci_resource_len(dev->pdev, mmio_bar);
 
@@ -2107,17 +1939,32 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags)
                         "performance may suffer.\n");
        }
 
-       ret = i915_probe_agp(dev, &agp_size, &prealloc_size);
-       if (ret)
+       dev_priv->mm.gtt = intel_gtt_get();
+       if (!dev_priv->mm.gtt) {
+               DRM_ERROR("Failed to initialize GTT\n");
+               ret = -ENODEV;
                goto out_iomapfree;
-
-       if (prealloc_size > intel_max_stolen) {
-               DRM_INFO("detected %dM stolen memory, trimming to %dM\n",
-                        prealloc_size >> 20, intel_max_stolen >> 20);
-               prealloc_size = intel_max_stolen;
        }
 
-       dev_priv->wq = create_singlethread_workqueue("i915");
+       prealloc_size = dev_priv->mm.gtt->gtt_stolen_entries << PAGE_SHIFT;
+       agp_size = dev_priv->mm.gtt->gtt_mappable_entries << PAGE_SHIFT;
+
+       /* The i915 workqueue is primarily used for batched retirement of
+        * requests (and thus managing bo) once the task has been completed
+        * by the GPU. i915_gem_retire_requests() is called directly when we
+        * need high-priority retirement, such as waiting for an explicit
+        * bo.
+        *
+        * It is also used for periodic low-priority events, such as
+        * idle-timers and hangcheck.
+        *
+        * All tasks on the workqueue are expected to acquire the dev mutex
+        * so there is no point in running more than one instance of the
+        * workqueue at any time: max_active = 1 and NON_REENTRANT.
+        */
+       dev_priv->wq = alloc_workqueue("i915",
+                                      WQ_UNBOUND | WQ_NON_REENTRANT,
+                                      1);
        if (dev_priv->wq == NULL) {
                DRM_ERROR("Failed to create our workqueue.\n");
                ret = -ENOMEM;
@@ -2152,6 +1999,7 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags)
 
        /* Try to make sure MCHBAR is enabled before poking at it */
        intel_setup_mchbar(dev);
+       intel_setup_gmbus(dev);
        intel_opregion_setup(dev);
 
        i915_gem_load(dev);
@@ -2301,11 +2149,12 @@ int i915_driver_unload(struct drm_device *dev)
                mutex_unlock(&dev->struct_mutex);
                if (I915_HAS_FBC(dev) && i915_powersave)
                        i915_cleanup_compression(dev);
-               drm_mm_takedown(&dev_priv->vram);
+               drm_mm_takedown(&dev_priv->mm.vram);
 
                intel_cleanup_overlay(dev);
        }
 
+       intel_teardown_gmbus(dev);
        intel_teardown_mchbar(dev);
 
        destroy_workqueue(dev_priv->wq);
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