On 10-09-2022 07:19, Dixit, Ashutosh wrote:
On Thu, 08 Sep 2022 19:56:44 -0700, Badal Nilawar wrote:
From: Don Hiatt <don.hiatt@xxxxxxxxx>
On GEN12, use the correct GEN12 RPSTAT register mask/shift.
HSD: 1409538411
I think let's remove this.
Sure.
Cc: Don Hiatt <donhiatt@xxxxxxxxx>
Cc: Andi Shyti <andi.shyti@xxxxxxxxx>
Signed-off-by: Don Hiatt <don.hiatt@xxxxxxxxx>
Signed-off-by: Badal Nilawar <badal.nilawar@xxxxxxxxx>
---
drivers/gpu/drm/i915/gt/intel_gt_pm_debugfs.c | 2 +-
drivers/gpu/drm/i915/gt/intel_gt_regs.h | 5 +++++
drivers/gpu/drm/i915/gt/intel_rps.c | 17 ++++++++++++++++-
drivers/gpu/drm/i915/gt/intel_rps.h | 1 +
drivers/gpu/drm/i915/i915_pmu.c | 3 +--
5 files changed, 24 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/i915/gt/intel_gt_pm_debugfs.c b/drivers/gpu/drm/i915/gt/intel_gt_pm_debugfs.c
index 108b9e76c32e..96c03a1258e1 100644
--- a/drivers/gpu/drm/i915/gt/intel_gt_pm_debugfs.c
+++ b/drivers/gpu/drm/i915/gt/intel_gt_pm_debugfs.c
@@ -380,7 +380,7 @@ void intel_gt_pm_frequency_dump(struct intel_gt *gt, struct drm_printer *p)
rpinclimit = intel_uncore_read(uncore, GEN6_RP_UP_THRESHOLD);
rpdeclimit = intel_uncore_read(uncore, GEN6_RP_DOWN_THRESHOLD);
- rpstat = intel_uncore_read(uncore, GEN6_RPSTAT1);
+ rpstat = intel_rps_read_rpstat(rps);
rpcurupei = intel_uncore_read(uncore, GEN6_RP_CUR_UP_EI) & GEN6_CURICONT_MASK;
rpcurup = intel_uncore_read(uncore, GEN6_RP_CUR_UP) & GEN6_CURBSYTAVG_MASK;
rpprevup = intel_uncore_read(uncore, GEN6_RP_PREV_UP) & GEN6_CURBSYTAVG_MASK;
diff --git a/drivers/gpu/drm/i915/gt/intel_gt_regs.h b/drivers/gpu/drm/i915/gt/intel_gt_regs.h
index fb2c56777480..dac59c3e68db 100644
--- a/drivers/gpu/drm/i915/gt/intel_gt_regs.h
+++ b/drivers/gpu/drm/i915/gt/intel_gt_regs.h
@@ -1510,6 +1510,11 @@
#define VLV_RENDER_C0_COUNT _MMIO(0x138118)
#define VLV_MEDIA_C0_COUNT _MMIO(0x13811c)
+#define GEN12_RPSTAT1 _MMIO(0x1381b4)
+#define GEN12_CAGF_SHIFT 11
+#define GEN12_CAGF_MASK REG_GENMASK(19, 11)
+#define GEN12_VOLTAGE_MASK REG_GENMASK(10, 0)
Let's remove GEN12_VOLTAGE_MASK, looks like it's not being used.
Yes, not used. I will remove this.
+
#define GEN11_GT_INTR_DW(x) _MMIO(0x190018 + ((x) * 4))
#define GEN11_CSME (31)
#define GEN11_GUNIT (28)
diff --git a/drivers/gpu/drm/i915/gt/intel_rps.c b/drivers/gpu/drm/i915/gt/intel_rps.c
index 6fadde4ee7bf..341f96f536e8 100644
--- a/drivers/gpu/drm/i915/gt/intel_rps.c
+++ b/drivers/gpu/drm/i915/gt/intel_rps.c
@@ -2040,6 +2040,19 @@ void intel_rps_sanitize(struct intel_rps *rps)
rps_disable_interrupts(rps);
}
+u32 intel_rps_read_rpstat(struct intel_rps *rps)
+{
+ struct drm_i915_private *i915 = rps_to_i915(rps);
+ u32 rpstat;
+
+ if (GRAPHICS_VER(i915) >= 12)
+ rpstat = intel_uncore_read(rps_to_gt(rps)->uncore, GEN12_RPSTAT1);
+ else
+ rpstat = intel_uncore_read(rps_to_gt(rps)->uncore, GEN6_RPSTAT1);
Probably nit but how about something like this:
i915_reg_t rpstat;
if (GRAPHICS_VER(i915) >= 12)
rpstat = GEN12_RPSTAT1;
else
rpstat = GEN6_RPSTAT1;
return intel_uncore_read(rps_to_gt(rps)->uncore, rpstat);
Ok
+
+ return rpstat;
+}
+
u32 intel_rps_get_cagf(struct intel_rps *rps, u32 rpstat)
{
struct drm_i915_private *i915 = rps_to_i915(rps);
@@ -2047,6 +2060,8 @@ u32 intel_rps_get_cagf(struct intel_rps *rps, u32 rpstat)
if (IS_VALLEYVIEW(i915) || IS_CHERRYVIEW(i915))
cagf = (rpstat >> 8) & 0xff;
+ else if (GRAPHICS_VER(i915) >= 12)
+ cagf = (rpstat & GEN12_CAGF_MASK) >> GEN12_CAGF_SHIFT;
else if (GRAPHICS_VER(i915) >= 9)
cagf = (rpstat & GEN9_CAGF_MASK) >> GEN9_CAGF_SHIFT;
else if (IS_HASWELL(i915) || IS_BROADWELL(i915))
@@ -2071,7 +2086,7 @@ static u32 read_cagf(struct intel_rps *rps)
freq = vlv_punit_read(i915, PUNIT_REG_GPU_FREQ_STS);
vlv_punit_put(i915);
} else if (GRAPHICS_VER(i915) >= 6) {
- freq = intel_uncore_read(uncore, GEN6_RPSTAT1);
+ freq = intel_rps_read_rpstat(rps);
} else {
freq = intel_uncore_read(uncore, MEMSTAT_ILK);
}
diff --git a/drivers/gpu/drm/i915/gt/intel_rps.h b/drivers/gpu/drm/i915/gt/intel_rps.h
index 4509dfdc52e0..08bae6d97870 100644
--- a/drivers/gpu/drm/i915/gt/intel_rps.h
+++ b/drivers/gpu/drm/i915/gt/intel_rps.h
@@ -47,6 +47,7 @@ u32 intel_rps_get_rp1_frequency(struct intel_rps *rps);
u32 intel_rps_get_rpn_frequency(struct intel_rps *rps);
u32 intel_rps_read_punit_req(struct intel_rps *rps);
u32 intel_rps_read_punit_req_frequency(struct intel_rps *rps);
+u32 intel_rps_read_rpstat(struct intel_rps *rps);
void gen6_rps_get_freq_caps(struct intel_rps *rps, struct intel_rps_freq_caps *caps);
void intel_rps_raise_unslice(struct intel_rps *rps);
void intel_rps_lower_unslice(struct intel_rps *rps);
diff --git a/drivers/gpu/drm/i915/i915_pmu.c b/drivers/gpu/drm/i915/i915_pmu.c
index 958b37123bf1..a24704ec2c18 100644
--- a/drivers/gpu/drm/i915/i915_pmu.c
+++ b/drivers/gpu/drm/i915/i915_pmu.c
@@ -371,7 +371,6 @@ static void
frequency_sample(struct intel_gt *gt, unsigned int period_ns)
{
struct drm_i915_private *i915 = gt->i915;
- struct intel_uncore *uncore = gt->uncore;
struct i915_pmu *pmu = &i915->pmu;
struct intel_rps *rps = >->rps;
@@ -394,7 +393,7 @@ frequency_sample(struct intel_gt *gt, unsigned int period_ns)
* case we assume the system is running at the intended
* frequency. Fortunately, the read should rarely fail!
*/
- val = intel_uncore_read_fw(uncore, GEN6_RPSTAT1);
+ val = intel_rps_read_rpstat(rps);
Hmm, we got rid of _fw which the comment above refers to. Maybe we need a
fw flag to intel_rps_read_rpstat?
Above function before reading rpstat it checks if gt is awake. So when
gt is awake shouldn't matter if we read GEN6_RPSTAT1 with forcewake.In
that case we can remove above comment.
Let me know your thoughts on this.
Regards,
Badal Nilawar
if (val)
val = intel_rps_get_cagf(rps, val);
else
--
2.25.1
