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drm/i915/gtt: Introduce init_pd_with_page

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We set the page directory entries to point into a page table.
There is no gen specifics in here so make it simple and
obvious.

Signed-off-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20190614164350.30415-3-mika.kuoppala@linux.intel.com
This commit is contained in:
Mika Kuoppala 2019-06-14 19:43:43 +03:00
parent b5b7bef9ca
commit 4fba8764b6
1 changed files with 8 additions and 8 deletions
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16
drivers/gpu/drm/i915/i915_gem_gtt.c
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@ -727,12 +727,12 @@ static void free_pd(struct i915_address_space *vm,
kfree(pd);
}
static void gen8_initialize_pd(struct i915_address_space *vm,
struct i915_page_directory *pd)
static void init_pd_with_page(struct i915_address_space *vm,
struct i915_page_directory * const pd,
struct i915_page_table *pt)
{
fill_px(vm, pd,
gen8_pde_encode(px_dma(vm->scratch_pt), I915_CACHE_LLC));
memset_p(pd->entry, vm->scratch_pt, I915_PDES);
fill_px(vm, pd, gen8_pde_encode(px_dma(pt), I915_CACHE_LLC));
memset_p(pd->entry, pt, 512);
}
static struct i915_page_directory *alloc_pdp(struct i915_address_space *vm)
@ -1265,7 +1265,7 @@ static int gen8_init_scratch(struct i915_address_space *vm)
}
gen8_initialize_pt(vm, vm->scratch_pt);
gen8_initialize_pd(vm, vm->scratch_pd);
init_pd_with_page(vm, vm->scratch_pd, vm->scratch_pt);
if (i915_vm_is_4lvl(vm))
gen8_initialize_4lvl_pdp(vm, vm->scratch_pdp);
@ -1442,7 +1442,7 @@ static int gen8_ppgtt_alloc_pdp(struct i915_address_space *vm,
if (IS_ERR(pd))
goto unwind;
gen8_initialize_pd(vm, pd);
init_pd_with_page(vm, pd, vm->scratch_pt);
old = cmpxchg(&pdp->entry[pdpe], vm->scratch_pd, pd);
if (old == vm->scratch_pd) {
@ -1564,7 +1564,7 @@ static int gen8_preallocate_top_level_pdp(struct i915_ppgtt *ppgtt)
if (IS_ERR(pd))
goto unwind;
gen8_initialize_pd(vm, pd);
init_pd_with_page(vm, pd, vm->scratch_pt);
gen8_ppgtt_set_pdpe(vm, pdp, pd, pdpe);
atomic_inc(&pdp->used);