diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2021-06-17 08:30:10 +0200 |
|---|---|---|
| committer | Matthew Auld <matthew.auld@intel.com> | 2021-06-17 14:23:02 +0100 |
| commit | 0dcd6fdf3b4be20995d8d35198ac252833613ab9 (patch) | |
| tree | e8bf971f6a2d77f0a002ba806c7d5322a90f2828 /drivers/gpu/drm/i915/gt/gen8_ppgtt.c | |
| parent | 3b86eb82dc2c9989ca6e53cb597a2a1390c64d12 (diff) | |
drm/i915/gt: Add an insert_entry for gen8_ppgtt
In the next patch, we will want to write a PTE for an explicit
dma address, outside of the usual vma.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210617063018.92802-5-thomas.hellstrom@linux.intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/gt/gen8_ppgtt.c')
| -rw-r--r-- | drivers/gpu/drm/i915/gt/gen8_ppgtt.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/gt/gen8_ppgtt.c b/drivers/gpu/drm/i915/gt/gen8_ppgtt.c index 21c8b7350b7a..1b676d7700bf 100644 --- a/drivers/gpu/drm/i915/gt/gen8_ppgtt.c +++ b/drivers/gpu/drm/i915/gt/gen8_ppgtt.c @@ -555,6 +555,24 @@ static void gen8_ppgtt_insert(struct i915_address_space *vm, } } +static void gen8_ppgtt_insert_entry(struct i915_address_space *vm, + dma_addr_t addr, + u64 offset, + enum i915_cache_level level, + u32 flags) +{ + u64 idx = offset >> GEN8_PTE_SHIFT; + struct i915_page_directory * const pdp = + gen8_pdp_for_page_index(vm, idx); + struct i915_page_directory *pd = + i915_pd_entry(pdp, gen8_pd_index(idx, 2)); + gen8_pte_t *vaddr; + + vaddr = px_vaddr(i915_pt_entry(pd, gen8_pd_index(idx, 1))); + vaddr[gen8_pd_index(idx, 0)] = gen8_pte_encode(addr, level, flags); + clflush_cache_range(&vaddr[gen8_pd_index(idx, 0)], sizeof(*vaddr)); +} + static int gen8_init_scratch(struct i915_address_space *vm) { u32 pte_flags; @@ -734,6 +752,7 @@ struct i915_ppgtt *gen8_ppgtt_create(struct intel_gt *gt) ppgtt->vm.bind_async_flags = I915_VMA_LOCAL_BIND; ppgtt->vm.insert_entries = gen8_ppgtt_insert; + ppgtt->vm.insert_page = gen8_ppgtt_insert_entry; ppgtt->vm.allocate_va_range = gen8_ppgtt_alloc; ppgtt->vm.clear_range = gen8_ppgtt_clear; |