On 18/06/2019 02:01, John.C.Harrison@xxxxxxxxx wrote:
From: John Harrison <John.C.Harrison@xxxxxxxxx>
Newer hardware adds flags to the whitelist work-around register. These
allow per access direction privileges and ranges.
Signed-off-by: John Harrison <John.C.Harrison@xxxxxxxxx>
Signed-off-by: Robert M. Fosha <robert.m.fosha@xxxxxxxxx>
Cc: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
Cc: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/gt/intel_workarounds.c | 9 ++++++++-
drivers/gpu/drm/i915/i915_reg.h | 7 +++++++
2 files changed, 15 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/gt/intel_workarounds.c b/drivers/gpu/drm/i915/gt/intel_workarounds.c
index 165b0a45e009..ae82340fff45 100644
--- a/drivers/gpu/drm/i915/gt/intel_workarounds.c
+++ b/drivers/gpu/drm/i915/gt/intel_workarounds.c
@@ -1012,7 +1012,7 @@ bool intel_gt_verify_workarounds(struct drm_i915_private *i915,
}
static void
-whitelist_reg(struct i915_wa_list *wal, i915_reg_t reg)
+whitelist_reg_ext(struct i915_wa_list *wal, i915_reg_t reg, u32 flags)
{
struct i915_wa wa = {
.reg = reg
@@ -1021,9 +1021,16 @@ whitelist_reg(struct i915_wa_list *wal, i915_reg_t reg)
if (GEM_DEBUG_WARN_ON(wal->count >= RING_MAX_NONPRIV_SLOTS))
return;
Actually how about we add somewhere around here:
GEM_BUG_ON(hweight32(flags & (..RD | .. WR)) > 1);
To ensure correct usage of the flags?
Regards,
Tvrtko
+ wa.reg.reg |= flags;
_wa_add(wal, &wa);
}
+static void
+whitelist_reg(struct i915_wa_list *wal, i915_reg_t reg)
+{
+ whitelist_reg_ext(wal, reg, RING_FORCE_TO_NONPRIV_RW);
+}
+
static void gen9_whitelist_build(struct i915_wa_list *w)
{
/* WaVFEStateAfterPipeControlwithMediaStateClear:skl,bxt,glk,cfl */
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 7a26766ba84d..cc295a4f6e92 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -2513,6 +2513,13 @@ enum i915_power_well_id {
#define RING_WAIT_SEMAPHORE (1 << 10) /* gen6+ */
#define RING_FORCE_TO_NONPRIV(base, i) _MMIO(((base) + 0x4D0) + (i) * 4)
+#define RING_FORCE_TO_NONPRIV_RW (0 << 28) /* CFL+ & Gen11+ */
+#define RING_FORCE_TO_NONPRIV_RD (1 << 28)
+#define RING_FORCE_TO_NONPRIV_WR (2 << 28)
+#define RING_FORCE_TO_NONPRIV_RANGE_1 (0 << 0) /* CFL+ & Gen11+ */
+#define RING_FORCE_TO_NONPRIV_RANGE_4 (1 << 0)
+#define RING_FORCE_TO_NONPRIV_RANGE_16 (2 << 0)
+#define RING_FORCE_TO_NONPRIV_RANGE_64 (3 << 0)
#define RING_MAX_NONPRIV_SLOTS 12
#define GEN7_TLB_RD_ADDR _MMIO(0x4700)
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