Once upon a time, back in the UMS days, we supported userspace
initialising the GTT and sharing portions of the GTT with other users.
Now, we own the GTT (both global and per-process) and the tables always
start at 0 - so we can remove i915_address_space.start and forget about
this old complication.
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Reviewed-by: Matthew Auld <matthew.auld@xxxxxxxxx>
---
drivers/gpu/drm/i915/i915_debugfs.c | 2 +-
drivers/gpu/drm/i915/i915_gem_evict.c | 2 +-
drivers/gpu/drm/i915/i915_gem_gtt.c | 16 ++++++----------
drivers/gpu/drm/i915/i915_gem_gtt.h | 1 -
drivers/gpu/drm/i915/i915_vgpu.c | 9 ++++-----
5 files changed, 12 insertions(+), 18 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index cd023fda1a3b..22045eef1cdd 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -476,7 +476,7 @@ static int i915_gem_object_info(struct seq_file *m, void *data)
dpy_count, dpy_size);
seq_printf(m, "%llu [%llu] gtt total\n",
- ggtt->base.total, ggtt->mappable_end - ggtt->base.start);
+ ggtt->base.total, ggtt->mappable_end);
seq_putc(m, '\n');
print_batch_pool_stats(m, dev_priv);
diff --git a/drivers/gpu/drm/i915/i915_gem_evict.c b/drivers/gpu/drm/i915/i915_gem_evict.c
index ca25b1f7f6d1..a0de5734f7d0 100644
--- a/drivers/gpu/drm/i915/i915_gem_evict.c
+++ b/drivers/gpu/drm/i915/i915_gem_evict.c
@@ -274,7 +274,7 @@ int i915_gem_evict_for_node(struct i915_address_space *vm,
check_color = vm->mm.color_adjust;
if (check_color) {
/* Expand search to cover neighbouring guard pages (or lack!) */
- if (start > vm->start)
+ if (start)
start -= I915_GTT_PAGE_SIZE;
/* Always look at the page afterwards to avoid the end-of-GTT */
diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c
index eef1047dc606..2dec388988bd 100644
--- a/drivers/gpu/drm/i915/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
@@ -1217,10 +1217,9 @@ static void gen8_dump_pdp(struct i915_hw_ppgtt *ppgtt,
static void gen8_dump_ppgtt(struct i915_hw_ppgtt *ppgtt, struct seq_file *m)
{
struct i915_address_space *vm = &ppgtt->base;
- uint64_t start = ppgtt->base.start;
- uint64_t length = ppgtt->base.total;
const gen8_pte_t scratch_pte =
gen8_pte_encode(vm->scratch_page.daddr, I915_CACHE_LLC);
+ u64 start = 0, length = ppgtt->base.total;
if (!USES_FULL_48BIT_PPGTT(vm->i915)) {
gen8_dump_pdp(ppgtt, &ppgtt->pdp, start, length, scratch_pte, m);
@@ -1287,7 +1286,6 @@ static int gen8_ppgtt_init(struct i915_hw_ppgtt *ppgtt)
if (ret)
return ret;
- ppgtt->base.start = 0;
ppgtt->base.cleanup = gen8_ppgtt_cleanup;
ppgtt->base.unbind_vma = ppgtt_unbind_vma;
ppgtt->base.bind_vma = ppgtt_bind_vma;
@@ -1348,9 +1346,8 @@ static void gen6_dump_ppgtt(struct i915_hw_ppgtt *ppgtt, struct seq_file *m)
struct i915_address_space *vm = &ppgtt->base;
struct i915_page_table *unused;
gen6_pte_t scratch_pte;
- uint32_t pd_entry;
- uint32_t pte, pde;
- uint32_t start = ppgtt->base.start, length = ppgtt->base.total;
+ u32 pd_entry, pte, pde;
+ u32 start = 0, length = ppgtt->base.total;
scratch_pte = vm->pte_encode(vm->scratch_page.daddr,
I915_CACHE_LLC, 0);
@@ -1784,7 +1781,6 @@ static int gen6_ppgtt_init(struct i915_hw_ppgtt *ppgtt)
ppgtt->base.unbind_vma = ppgtt_unbind_vma;
ppgtt->base.bind_vma = ppgtt_bind_vma;
ppgtt->base.cleanup = gen6_ppgtt_cleanup;
- ppgtt->base.start = 0;
ppgtt->base.total = I915_PDES * GEN6_PTES * PAGE_SIZE;
ppgtt->debug_dump = gen6_dump_ppgtt;
@@ -1825,7 +1821,7 @@ static void i915_address_space_init(struct i915_address_space *vm,
{
i915_gem_timeline_init(dev_priv, &vm->timeline, name);
- drm_mm_init(&vm->mm, vm->start, vm->total);
+ drm_mm_init(&vm->mm, 0, vm->total);
vm->mm.head_node.color = I915_COLOR_UNEVICTABLE;
INIT_LIST_HEAD(&vm->active_list);
@@ -2011,7 +2007,7 @@ void i915_gem_suspend_gtt_mappings(struct drm_i915_private *dev_priv)
i915_check_and_clear_faults(dev_priv);
- ggtt->base.clear_range(&ggtt->base, ggtt->base.start, ggtt->base.total);
+ ggtt->base.clear_range(&ggtt->base, 0, ggtt->base.total);
i915_ggtt_invalidate(dev_priv);
}
@@ -2979,7 +2975,7 @@ void i915_gem_restore_gtt_mappings(struct drm_i915_private *dev_priv)
i915_check_and_clear_faults(dev_priv);
/* First fill our portion of the GTT with scratch pages */
- ggtt->base.clear_range(&ggtt->base, ggtt->base.start, ggtt->base.total);
+ ggtt->base.clear_range(&ggtt->base, 0, ggtt->base.total);
ggtt->base.closed = true; /* skip rewriting PTE on VMA unbind */
diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.h b/drivers/gpu/drm/i915/i915_gem_gtt.h
index 6210550e15cf..e85ff6c97208 100644
--- a/drivers/gpu/drm/i915/i915_gem_gtt.h
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.h
@@ -256,7 +256,6 @@ struct i915_address_space {
*/
struct drm_i915_file_private *file;
struct list_head global_link;
- u64 start; /* Start offset always 0 for dri2 */
u64 total; /* size addr space maps (ex. 2GB for ggtt) */
bool closed;
diff --git a/drivers/gpu/drm/i915/i915_vgpu.c b/drivers/gpu/drm/i915/i915_vgpu.c
index d0abfd08a01c..14014068dfcf 100644
--- a/drivers/gpu/drm/i915/i915_vgpu.c
+++ b/drivers/gpu/drm/i915/i915_vgpu.c
@@ -179,7 +179,7 @@ static int vgt_balloon_space(struct i915_ggtt *ggtt,
int intel_vgt_balloon(struct drm_i915_private *dev_priv)
{
struct i915_ggtt *ggtt = &dev_priv->ggtt;
- unsigned long ggtt_end = ggtt->base.start + ggtt->base.total;
+ unsigned long ggtt_end = ggtt->base.total;
unsigned long mappable_base, mappable_size, mappable_end;
unsigned long unmappable_base, unmappable_size, unmappable_end;
@@ -202,8 +202,7 @@ int intel_vgt_balloon(struct drm_i915_private *dev_priv)
DRM_INFO("Unmappable graphic memory: base 0x%lx size %ldKiB\n",
unmappable_base, unmappable_size / 1024);
- if (mappable_base < ggtt->base.start ||
- mappable_end > ggtt->mappable_end ||
+ if (mappable_end > ggtt->mappable_end ||
unmappable_base < ggtt->mappable_end ||
unmappable_end > ggtt_end) {
DRM_ERROR("Invalid ballooning configuration!\n");
@@ -231,9 +230,9 @@ int intel_vgt_balloon(struct drm_i915_private *dev_priv)
}
/* Mappable graphic memory ballooning */
- if (mappable_base > ggtt->base.start) {
+ if (mappable_base) {
ret = vgt_balloon_space(ggtt, &bl_info.space[0],
- ggtt->base.start, mappable_base);
+ 0, mappable_base);
if (ret)
goto err;
--
2.11.0
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