Since the number of fence regs can vary dramactically between platforms,
allocate the array on demand so we don't waste as much space.
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Reviewed-by: Mika Kuoppala <mika.kuoppala@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/gt/intel_ggtt.c | 6 ++++--
drivers/gpu/drm/i915/gt/intel_ggtt_fencing.c | 10 ++++++++++
drivers/gpu/drm/i915/gt/intel_ggtt_fencing.h | 1 +
drivers/gpu/drm/i915/gt/intel_gtt.h | 5 +++--
drivers/gpu/drm/i915/i915_vma.h | 1 +
5 files changed, 19 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/i915/gt/intel_ggtt.c b/drivers/gpu/drm/i915/gt/intel_ggtt.c
index bde4f64a41f7..8fcf14372d7a 100644
--- a/drivers/gpu/drm/i915/gt/intel_ggtt.c
+++ b/drivers/gpu/drm/i915/gt/intel_ggtt.c
@@ -698,11 +698,13 @@ static void ggtt_cleanup_hw(struct i915_ggtt *ggtt)
*/
void i915_ggtt_driver_release(struct drm_i915_private *i915)
{
+ struct i915_ggtt *ggtt = &i915->ggtt;
struct pagevec *pvec;
- fini_aliasing_ppgtt(&i915->ggtt);
+ fini_aliasing_ppgtt(ggtt);
- ggtt_cleanup_hw(&i915->ggtt);
+ intel_ggtt_fini_fences(ggtt);
+ ggtt_cleanup_hw(ggtt);
pvec = &i915->mm.wc_stash.pvec;
if (pvec->nr) {
diff --git a/drivers/gpu/drm/i915/gt/intel_ggtt_fencing.c b/drivers/gpu/drm/i915/gt/intel_ggtt_fencing.c
index 94af75673a58..b6ba68c42546 100644
--- a/drivers/gpu/drm/i915/gt/intel_ggtt_fencing.c
+++ b/drivers/gpu/drm/i915/gt/intel_ggtt_fencing.c
@@ -857,6 +857,11 @@ void intel_ggtt_init_fences(struct i915_ggtt *ggtt)
if (intel_vgpu_active(i915))
num_fences = intel_uncore_read(uncore,
vgtif_reg(avail_rs.fence_num));
+ ggtt->fence_regs = kcalloc(num_fences,
+ sizeof(*ggtt->fence_regs),
+ GFP_KERNEL);
+ if (!ggtt->fence_regs)
+ num_fences = 0;
/* Initialize fence registers to zero */
for (i = 0; i < num_fences; i++) {
@@ -871,6 +876,11 @@ void intel_ggtt_init_fences(struct i915_ggtt *ggtt)
intel_ggtt_restore_fences(ggtt);
}
+void intel_ggtt_fini_fences(struct i915_ggtt *ggtt)
+{
+ kfree(ggtt->fence_regs);
+}
+
void intel_gt_init_swizzling(struct intel_gt *gt)
{
struct drm_i915_private *i915 = gt->i915;
diff --git a/drivers/gpu/drm/i915/gt/intel_ggtt_fencing.h b/drivers/gpu/drm/i915/gt/intel_ggtt_fencing.h
index 3b3eb5bf1b75..9850f6a85d2a 100644
--- a/drivers/gpu/drm/i915/gt/intel_ggtt_fencing.h
+++ b/drivers/gpu/drm/i915/gt/intel_ggtt_fencing.h
@@ -64,6 +64,7 @@ void i915_gem_object_save_bit_17_swizzle(struct drm_i915_gem_object *obj,
struct sg_table *pages);
void intel_ggtt_init_fences(struct i915_ggtt *ggtt);
+void intel_ggtt_fini_fences(struct i915_ggtt *ggtt);
void intel_gt_init_swizzling(struct intel_gt *gt);
diff --git a/drivers/gpu/drm/i915/gt/intel_gtt.h b/drivers/gpu/drm/i915/gt/intel_gtt.h
index ce6ff9d3a350..d93ebdf3fa0e 100644
--- a/drivers/gpu/drm/i915/gt/intel_gtt.h
+++ b/drivers/gpu/drm/i915/gt/intel_gtt.h
@@ -26,7 +26,6 @@
#include <drm/drm_mm.h>
#include "gt/intel_reset.h"
-#include "gt/intel_ggtt_fencing.h"
#include "i915_selftest.h"
#include "i915_vma_types.h"
@@ -135,6 +134,8 @@ typedef u64 gen8_pte_t;
#define GEN8_PDE_IPS_64K BIT(11)
#define GEN8_PDE_PS_2M BIT(7)
+struct i915_fence_reg;
+
#define for_each_sgt_daddr(__dp, __iter, __sgt) \
__for_each_sgt_daddr(__dp, __iter, __sgt, I915_GTT_PAGE_SIZE)
@@ -333,7 +334,7 @@ struct i915_ggtt {
u32 pin_bias;
unsigned int num_fences;
- struct i915_fence_reg fence_regs[I915_MAX_NUM_FENCES];
+ struct i915_fence_reg *fence_regs;
struct list_head fence_list;
/**
diff --git a/drivers/gpu/drm/i915/i915_vma.h b/drivers/gpu/drm/i915/i915_vma.h
index 2764c277326f..b958ad07f212 100644
--- a/drivers/gpu/drm/i915/i915_vma.h
+++ b/drivers/gpu/drm/i915/i915_vma.h
@@ -30,6 +30,7 @@
#include <drm/drm_mm.h>
+#include "gt/intel_ggtt_fencing.h"
#include "gem/i915_gem_object.h"
#include "i915_gem_gtt.h"
--
2.20.1
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