diff options
Diffstat (limited to 'drivers/gpu/drm/i915/i915_gem_tiling.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_gem_tiling.c | 163 |
1 files changed, 1 insertions, 162 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem_tiling.c b/drivers/gpu/drm/i915/i915_gem_tiling.c index 137e888427f1..20653776965a 100644 --- a/drivers/gpu/drm/i915/i915_gem_tiling.c +++ b/drivers/gpu/drm/i915/i915_gem_tiling.c @@ -25,8 +25,6 @@ * */ -#include <linux/acpi.h> -#include <linux/pnp.h> #include "linux/string.h" #include "linux/bitops.h" #include "drmP.h" @@ -83,120 +81,6 @@ * to match what the GPU expects. */ -#define MCHBAR_I915 0x44 -#define MCHBAR_I965 0x48 -#define MCHBAR_SIZE (4*4096) - -#define DEVEN_REG 0x54 -#define DEVEN_MCHBAR_EN (1 << 28) - -/* Allocate space for the MCH regs if needed, return nonzero on error */ -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; - u32 temp_lo, temp_hi = 0; - u64 mchbar_addr; - int ret = 0; - - if (IS_I965G(dev)) - 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; - - /* If ACPI doesn't have it, assume we need to allocate it ourselves */ -#ifdef CONFIG_PNP - if (mchbar_addr && - pnp_range_reserved(mchbar_addr, mchbar_addr + MCHBAR_SIZE)) { - ret = 0; - goto out; - } -#endif - - /* Get some space for it */ - ret = pci_bus_alloc_resource(dev_priv->bridge_dev->bus, &dev_priv->mch_res, - MCHBAR_SIZE, MCHBAR_SIZE, - PCIBIOS_MIN_MEM, - 0, pcibios_align_resource, - dev_priv->bridge_dev); - if (ret) { - DRM_DEBUG_DRIVER("failed bus alloc: %d\n", ret); - dev_priv->mch_res.start = 0; - goto out; - } - - if (IS_I965G(dev)) - pci_write_config_dword(dev_priv->bridge_dev, reg + 4, - upper_32_bits(dev_priv->mch_res.start)); - - pci_write_config_dword(dev_priv->bridge_dev, reg, - lower_32_bits(dev_priv->mch_res.start)); -out: - return ret; -} - -/* Setup MCHBAR if possible, return true if we should disable it again */ -static bool -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; - u32 temp; - bool need_disable = false, enabled; - - if (IS_I915G(dev) || IS_I915GM(dev)) { - pci_read_config_dword(dev_priv->bridge_dev, DEVEN_REG, &temp); - enabled = !!(temp & DEVEN_MCHBAR_EN); - } else { - pci_read_config_dword(dev_priv->bridge_dev, mchbar_reg, &temp); - enabled = temp & 1; - } - - /* If it's already enabled, don't have to do anything */ - if (enabled) - goto out; - - if (intel_alloc_mchbar_resource(dev)) - goto out; - - need_disable = true; - - /* Space is allocated or reserved, so enable it. */ - if (IS_I915G(dev) || IS_I915GM(dev)) { - pci_write_config_dword(dev_priv->bridge_dev, DEVEN_REG, - temp | DEVEN_MCHBAR_EN); - } else { - pci_read_config_dword(dev_priv->bridge_dev, mchbar_reg, &temp); - pci_write_config_dword(dev_priv->bridge_dev, mchbar_reg, temp | 1); - } -out: - return need_disable; -} - -static void -intel_teardown_mchbar(struct drm_device *dev, bool disable) -{ - drm_i915_private_t *dev_priv = dev->dev_private; - int mchbar_reg = IS_I965G(dev) ? MCHBAR_I965 : MCHBAR_I915; - u32 temp; - - if (disable) { - if (IS_I915G(dev) || IS_I915GM(dev)) { - pci_read_config_dword(dev_priv->bridge_dev, DEVEN_REG, &temp); - temp &= ~DEVEN_MCHBAR_EN; - pci_write_config_dword(dev_priv->bridge_dev, DEVEN_REG, temp); - } else { - pci_read_config_dword(dev_priv->bridge_dev, mchbar_reg, &temp); - temp &= ~1; - pci_write_config_dword(dev_priv->bridge_dev, mchbar_reg, temp); - } - } - - if (dev_priv->mch_res.start) - release_resource(&dev_priv->mch_res); -} - /** * Detects bit 6 swizzling of address lookup between IGD access and CPU * access through main memory. @@ -207,7 +91,6 @@ i915_gem_detect_bit_6_swizzle(struct drm_device *dev) drm_i915_private_t *dev_priv = dev->dev_private; uint32_t swizzle_x = I915_BIT_6_SWIZZLE_UNKNOWN; uint32_t swizzle_y = I915_BIT_6_SWIZZLE_UNKNOWN; - bool need_disable; if (IS_IRONLAKE(dev)) { /* On Ironlake whatever DRAM config, GPU always do @@ -224,9 +107,6 @@ i915_gem_detect_bit_6_swizzle(struct drm_device *dev) } else if (IS_MOBILE(dev)) { uint32_t dcc; - /* Try to make sure MCHBAR is enabled before poking at it */ - need_disable = intel_setup_mchbar(dev); - /* On mobile 9xx chipsets, channel interleave by the CPU is * determined by DCC. For single-channel, neither the CPU * nor the GPU do swizzling. For dual channel interleaved, @@ -266,8 +146,6 @@ i915_gem_detect_bit_6_swizzle(struct drm_device *dev) swizzle_x = I915_BIT_6_SWIZZLE_UNKNOWN; swizzle_y = I915_BIT_6_SWIZZLE_UNKNOWN; } - - intel_teardown_mchbar(dev, need_disable); } else { /* The 965, G33, and newer, have a very flexible memory * configuration. It will enable dual-channel mode @@ -302,39 +180,6 @@ i915_gem_detect_bit_6_swizzle(struct drm_device *dev) dev_priv->mm.bit_6_swizzle_y = swizzle_y; } - -/** - * Returns whether an object is currently fenceable. If not, it may need - * to be unbound and have its pitch adjusted. - */ -bool -i915_obj_fenceable(struct drm_device *dev, struct drm_gem_object *obj) -{ - struct drm_i915_gem_object *obj_priv = obj->driver_private; - - if (IS_I965G(dev)) { - /* The 965 can have fences at any page boundary. */ - if (obj->size & 4095) - return false; - return true; - } else if (IS_I9XX(dev)) { - if (obj_priv->gtt_offset & ~I915_FENCE_START_MASK) - return false; - } else { - if (obj_priv->gtt_offset & ~I830_FENCE_START_MASK) - return false; - } - - /* Power of two sized... */ - if (obj->size & (obj->size - 1)) - return false; - - /* Objects must be size aligned as well */ - if (obj_priv->gtt_offset & (obj->size - 1)) - return false; - return true; -} - /* Check pitch constriants for all chips & tiling formats */ bool i915_tiling_ok(struct drm_device *dev, int stride, int size, int tiling_mode) @@ -391,7 +236,7 @@ i915_tiling_ok(struct drm_device *dev, int stride, int size, int tiling_mode) return true; } -static bool +bool i915_gem_object_fence_offset_ok(struct drm_gem_object *obj, int tiling_mode) { struct drm_device *dev = obj->dev; @@ -491,12 +336,6 @@ i915_gem_set_tiling(struct drm_device *dev, void *data, goto err; } - /* If we've changed tiling, GTT-mappings of the object - * need to re-fault to ensure that the correct fence register - * setup is in place. - */ - i915_gem_release_mmap(obj); - obj_priv->tiling_mode = args->tiling_mode; obj_priv->stride = args->stride; } |
