diff options
Diffstat (limited to 'drivers/gpu/drm/i915/i915_gem_gtt.h')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_gem_gtt.h | 84 |
1 files changed, 61 insertions, 23 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.h b/drivers/gpu/drm/i915/i915_gem_gtt.h index 0008543d5..aa5f31d1c 100644 --- a/drivers/gpu/drm/i915/i915_gem_gtt.h +++ b/drivers/gpu/drm/i915/i915_gem_gtt.h @@ -34,6 +34,8 @@ #ifndef __I915_GEM_GTT_H__ #define __I915_GEM_GTT_H__ +#include <linux/io-mapping.h> + struct drm_i915_file_private; typedef uint32_t gen6_pte_t; @@ -175,6 +177,7 @@ struct i915_vma { struct drm_mm_node node; struct drm_i915_gem_object *obj; struct i915_address_space *vm; + void __iomem *iomap; /** Flags and address space this VMA is bound to */ #define GLOBAL_BIND (1<<0) @@ -316,6 +319,11 @@ struct i915_address_space { uint64_t start, uint64_t length, bool use_scratch); + void (*insert_page)(struct i915_address_space *vm, + dma_addr_t addr, + uint64_t offset, + enum i915_cache_level cache_level, + u32 flags); void (*insert_entries)(struct i915_address_space *vm, struct sg_table *st, uint64_t start, @@ -382,27 +390,27 @@ struct i915_hw_ppgtt { void (*debug_dump)(struct i915_hw_ppgtt *ppgtt, struct seq_file *m); }; -/* For each pde iterates over every pde between from start until start + length. - * If start, and start+length are not perfectly divisible, the macro will round - * down, and up as needed. The macro modifies pde, start, and length. Dev is - * only used to differentiate shift values. Temp is temp. On gen6/7, start = 0, - * and length = 2G effectively iterates over every PDE in the system. - * - * XXX: temp is not actually needed, but it saves doing the ALIGN operation. +/* + * gen6_for_each_pde() iterates over every pde from start until start+length. + * If start and start+length are not perfectly divisible, the macro will round + * down and up as needed. Start=0 and length=2G effectively iterates over + * every PDE in the system. The macro modifies ALL its parameters except 'pd', + * so each of the other parameters should preferably be a simple variable, or + * at most an lvalue with no side-effects! */ -#define gen6_for_each_pde(pt, pd, start, length, temp, iter) \ - for (iter = gen6_pde_index(start); \ - length > 0 && iter < I915_PDES ? \ - (pt = (pd)->page_table[iter]), 1 : 0; \ - iter++, \ - temp = ALIGN(start+1, 1 << GEN6_PDE_SHIFT) - start, \ - temp = min_t(unsigned, temp, length), \ - start += temp, length -= temp) - -#define gen6_for_all_pdes(pt, ppgtt, iter) \ - for (iter = 0; \ - pt = ppgtt->pd.page_table[iter], iter < I915_PDES; \ - iter++) +#define gen6_for_each_pde(pt, pd, start, length, iter) \ + for (iter = gen6_pde_index(start); \ + length > 0 && iter < I915_PDES && \ + (pt = (pd)->page_table[iter], true); \ + ({ u32 temp = ALIGN(start+1, 1 << GEN6_PDE_SHIFT); \ + temp = min(temp - start, length); \ + start += temp, length -= temp; }), ++iter) + +#define gen6_for_all_pdes(pt, pd, iter) \ + for (iter = 0; \ + iter < I915_PDES && \ + (pt = (pd)->page_table[iter], true); \ + ++iter) static inline uint32_t i915_pte_index(uint64_t address, uint32_t pde_shift) { @@ -518,9 +526,7 @@ int i915_ggtt_enable_hw(struct drm_device *dev); void i915_gem_init_ggtt(struct drm_device *dev); void i915_ggtt_cleanup_hw(struct drm_device *dev); -int i915_ppgtt_init(struct drm_device *dev, struct i915_hw_ppgtt *ppgtt); int i915_ppgtt_init_hw(struct drm_device *dev); -int i915_ppgtt_init_ring(struct drm_i915_gem_request *req); void i915_ppgtt_release(struct kref *kref); struct i915_hw_ppgtt *i915_ppgtt_create(struct drm_device *dev, struct drm_i915_file_private *fpriv); @@ -535,7 +541,7 @@ static inline void i915_ppgtt_put(struct i915_hw_ppgtt *ppgtt) kref_put(&ppgtt->ref, i915_ppgtt_release); } -void i915_check_and_clear_faults(struct drm_device *dev); +void i915_check_and_clear_faults(struct drm_i915_private *dev_priv); void i915_gem_suspend_gtt_mappings(struct drm_device *dev); void i915_gem_restore_gtt_mappings(struct drm_device *dev); @@ -560,4 +566,36 @@ size_t i915_ggtt_view_size(struct drm_i915_gem_object *obj, const struct i915_ggtt_view *view); +/** + * i915_vma_pin_iomap - calls ioremap_wc to map the GGTT VMA via the aperture + * @vma: VMA to iomap + * + * The passed in VMA has to be pinned in the global GTT mappable region. + * An extra pinning of the VMA is acquired for the return iomapping, + * the caller must call i915_vma_unpin_iomap to relinquish the pinning + * after the iomapping is no longer required. + * + * Callers must hold the struct_mutex. + * + * Returns a valid iomapped pointer or ERR_PTR. + */ +void __iomem *i915_vma_pin_iomap(struct i915_vma *vma); + +/** + * i915_vma_unpin_iomap - unpins the mapping returned from i915_vma_iomap + * @vma: VMA to unpin + * + * Unpins the previously iomapped VMA from i915_vma_pin_iomap(). + * + * Callers must hold the struct_mutex. This function is only valid to be + * called on a VMA previously iomapped by the caller with i915_vma_pin_iomap(). + */ +static inline void i915_vma_unpin_iomap(struct i915_vma *vma) +{ + lockdep_assert_held(&vma->vm->dev->struct_mutex); + GEM_BUG_ON(vma->pin_count == 0); + GEM_BUG_ON(vma->iomap == NULL); + vma->pin_count--; +} + #endif |