From: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@xxxxxxxxx>
Switch the search and grow code of the _wa_add to use _wa_index and
_wa_list_grow.
Signed-off-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@xxxxxxxxx>
---
drivers/gpu/drm/i915/gt/intel_workarounds.c | 124 +++++++++++---------
1 file changed, 71 insertions(+), 53 deletions(-)
diff --git a/drivers/gpu/drm/i915/gt/intel_workarounds.c b/drivers/gpu/drm/i915/gt/intel_workarounds.c
index c49083957074..e50c72d2b3f1 100644
--- a/drivers/gpu/drm/i915/gt/intel_workarounds.c
+++ b/drivers/gpu/drm/i915/gt/intel_workarounds.c
@@ -91,20 +91,19 @@ static void wa_init_start(struct i915_wa_list *wal, const char *name, const char
#define WA_LIST_CHUNK (1 << 4)
-static void wa_init_finish(struct i915_wa_list *wal)
+static void wa_trim(struct i915_wa_list *wal, gfp_t gfp)
{
+ struct i915_wa *list;
+
/* Trim unused entries. */
- if (!IS_ALIGNED(wal->count, WA_LIST_CHUNK)) {
- struct i915_wa *list = kmemdup(wal->list,
- wal->count * sizeof(*list),
- GFP_KERNEL);
-
- if (list) {
- kfree(wal->list);
- wal->list = list;
- }
- }
+ list = krealloc(wal->list, wal->count * sizeof(*list), gfp);
+ if (list)
+ wal->list = list;
+}
+static void wa_init_finish(struct i915_wa_list *wal)
+{
+ wa_trim(wal, GFP_KERNEL);
if (!wal->count)
return;
@@ -112,57 +111,60 @@ static void wa_init_finish(struct i915_wa_list *wal)
wal->wa_count, wal->name, wal->engine_name);
}
-static void _wa_add(struct i915_wa_list *wal, const struct i915_wa *wa)
+static int wa_index(struct i915_wa_list *wal, i915_reg_t reg)
{
- unsigned int addr = i915_mmio_reg_offset(wa->reg);
- unsigned int start = 0, end = wal->count;
- const unsigned int grow = WA_LIST_CHUNK;
- struct i915_wa *wa_;
+ unsigned int addr = i915_mmio_reg_offset(reg);
+ int start = 0, end = wal->count;
- GEM_BUG_ON(!is_power_of_2(grow));
+ /* addr and wal->list[].reg, both include the R/W flags */
+ while (start < end) {
+ unsigned int mid = start + (end - start) / 2;
- if (IS_ALIGNED(wal->count, grow)) { /* Either uninitialized or full. */
- struct i915_wa *list;
+ if (i915_mmio_reg_offset(wal->list[mid].reg) < addr)
+ start = mid + 1;
+ else if (i915_mmio_reg_offset(wal->list[mid].reg) > addr)
+ end = mid;
+ else
+ return mid;
+ }
- list = kmalloc_array(ALIGN(wal->count + 1, grow), sizeof(*wa),
- GFP_KERNEL);
- if (!list) {
- DRM_ERROR("No space for workaround init!\n");
- return;
- }
+ return -ENOENT;
+}
- if (wal->list) {
- memcpy(list, wal->list, sizeof(*wa) * wal->count);
- kfree(wal->list);
- }
+static int wa_list_grow(struct i915_wa_list *wal, size_t count, gfp_t gfp)
+{
+ struct i915_wa *list;
- wal->list = list;
- }
+ list = krealloc(wal->list, count * sizeof(*list), gfp);
+ if (!list)
+ return -ENOMEM;
- while (start < end) {
- unsigned int mid = start + (end - start) / 2;
+ wal->list = list;
+ return 0;
+}
- if (i915_mmio_reg_offset(wal->list[mid].reg) < addr) {
- start = mid + 1;
- } else if (i915_mmio_reg_offset(wal->list[mid].reg) > addr) {
- end = mid;
- } else {
- wa_ = &wal->list[mid];
-
- if ((wa->clr | wa_->clr) && !(wa->clr & ~wa_->clr)) {
- DRM_ERROR("Discarding overwritten w/a for reg %04x (clear: %08x, set: %08x)\n",
- i915_mmio_reg_offset(wa_->reg),
- wa_->clr, wa_->set);
-
- wa_->set &= ~wa->clr;
- }
-
- wal->wa_count++;
- wa_->set |= wa->set;
- wa_->clr |= wa->clr;
- wa_->read |= wa->read;
- return;
+static void __wa_add(struct i915_wa_list *wal, const struct i915_wa *wa)
+{
+ struct i915_wa *wa_;
+ int index;
+
+ index = wa_index(wal, wa->reg);
+ if (index >= 0) {
+ wa_ = &wal->list[index];
+
+ if ((wa->clr | wa_->clr) && !(wa->clr & ~wa_->clr)) {
+ DRM_ERROR("Discarding overwritten w/a for reg %04x (clear: %08x, set: %08x)\n",
+ i915_mmio_reg_offset(wa_->reg),
+ wa_->clr, wa_->set);
+
+ wa_->set &= ~wa->clr;
}
+
+ wal->wa_count++;
+ wa_->set |= wa->set;
+ wa_->clr |= wa->clr;
+ wa_->read |= wa->read;
+ return;
}
wal->wa_count++;
@@ -180,6 +182,22 @@ static void _wa_add(struct i915_wa_list *wal, const struct i915_wa *wa)
}
}
+static void _wa_add(struct i915_wa_list *wal, const struct i915_wa *wa)
+{
+ const unsigned int grow = WA_LIST_CHUNK;
+
+ GEM_BUG_ON(!is_power_of_2(grow));
+
+ if (IS_ALIGNED(wal->count, grow) && /* Either uninitialized or full. */
+ wa_list_grow(wal, ALIGN(wal->count + 1, grow), GFP_KERNEL)) {
+ DRM_ERROR("Unable to store w/a for reg %04x\n",
+ i915_mmio_reg_offset(wa->reg));
+ return;
+ }
+
+ __wa_add(wal, wa);
+}
+
static void wa_add(struct i915_wa_list *wal, i915_reg_t reg,
u32 clear, u32 set, u32 read_mask)
{
--
2.20.1
