[PATCH v9 00/20] GMU-less A6xx support (A610, A619_holi)

[PATCH v9 00/20] GMU-less A6xx support (A610, A619_holi)

[Konrad Dybcio]

v8 -> v9:
- Re-pick-up Krzysztof's lost r-b tag (I messed up, sorry)
- Rebase on constifying-adreno_is_aXYZ and A690 changes
- Fix A610 inactive period
- Move the stray A619 register write from A610 patch to the A619 patch
- Add one more commit, cleaning up A690 addition for git context (for adding
  adreno_is_a680 in "Use adreno_is_aXYZ macros in speedbin matching")
- Use a readback+delay combo instead of a memory barrier in sw reset
- Separate out GMU CX power counter moving
- Pick up tags from v8
v8: https://lore.kernel.org/r/20230223-topic-gmuwrapper-v8-0-69c68206609e@linaro.org

v7 -> v8:
- Fix up resume/suspend (icc now correctly parks to 0, don't abuse
  OPP & genpd throughout system-wide suspend)
- Don't handle ebi1_clk separately, the bulk ops handle it just fine
- Rebase on next-20230525 (no meaningful changes)

v7: https://lore.kernel.org/linux-arm-msm/20230223-topic-gmuwrapper-v7-0-ecc7aab83556@linaro.org/

v6 -> v7:
- Rebase on next-20230519 (A640/650 speedbin merged already)

- separate out the .get_timestamp cb for gmu wrapper

- check for gmu presence inside a6xx_llc_slices_(init|destroy) instead
  of before calling them

- use REG_A6XX_RBBM_GPR0_CNTL instead of literal 0x18

- move a6xx_bus_clear_pending_transactions to a6xx_gpu, clean it up
  and reuse it for gmu wrapper gpus

- drop clearing RBBM_GBIF (GBIF from GX's POV) as part of draining the
  buses, it's not necessary

- introduce a helper for gpu softreset

- sw-reset the gmu wrapper GPUS *after* draining GBIF and only reset
  it if it's hung

- reword the commit message in "Remove both GBIF and RBBM GBIF halt
  on hw init" and move it before gmu wrapper-specific changes

- drop set_rate logic from a6xx_pm_suspend as the clock simply gets
  disabled and we don't have to worry about scaling problems as OPP
  and devfreq take care of that, validated with debugcc

- drop a level of indentation in _a6xx_check_idle() to hopefully
  improve readability

- check for !a610 instead of gmu_wrapper||a619_holi in sptprac cc
  toggling in a6xx_set_hwcg()

- pick up krzk's rb on bindings

All external dependencies have been merged since the last revision.

v6: https://lore.kernel.org/r/20230223-topic-gmuwrapper-v6-0-2034115bb60c@linaro.org

v5 -> v6:
- Rebase on 8ead96783163 ("drm/msm/gpu: Move BO allocation out of hw_init")
  (Add .ucode_load to funcs_gmuwrapper)
- Drop A6[45]0 speedbin deps, merged into msm-next

Dependencies:
- https://lore.kernel.org/linux-arm-msm/20230330231517.2747024-1-konrad.dybcio@linaro.org/ (to work properly)

v5: https://lore.kernel.org/linux-arm-msm/20230223-topic-gmuwrapper-v5-0-bf774b9a902a@linaro.org/

v4 -> v5:
- Add a newline before the new allOf:if: [3/15]
- Enforce 6 clocks on A619_holi/A610 [2/15]
- Pick up tags
- Improve error handling in a6xx_pm_resume [6/15]
- Add patch [1/15] (fix an existing issue) which can be picked
  separately and account for it in [6/15]
- Rebase atop Akhil's CX shutdown patches and incorporate analogous logic
- Fix a regression introduced in v3 that made the fw loader expect
  GMU fw on GMU wrapper GPUs

Dependencies:
- https://lore.kernel.org/linux-arm-msm/20230120172233.1905761-1-konrad.dybcio@linaro.org/ (to apply)
- https://lore.kernel.org/linux-arm-msm/20230330231517.2747024-1-konrad.dybcio@linaro.org/ (to work properly)

v4: https://lore.kernel.org/r/20230223-topic-gmuwrapper-v4-0-e987eb79d03f@linaro.org

v3 -> v4:
- Drop the mistakengly-included and wrong A3xx-A5xx bindings changes
- Improve bindings commit messages to better explain what GMU Wrapper is
- Drop the A680 highest bank bit value adjustment patch
- Sort UBWC config variables in a reverse-Christmass-tree fashion [4/14]
- Don't alter any UBWC config values in [4/14]
  - Do so for a619_holi in [8/14]
- Rebase on next-20230314 (shouldn't matter at all)

v3: https://lore.kernel.org/r/20230223-topic-gmuwrapper-v3-0-5be55a336819@linaro.org

v2 -> v3:
New dependencies:
- https://lore.kernel.org/linux-arm-msm/20230223-topic-opp-v3-0-5f22163cd1df@linaro.org/T/#t
- https://lore.kernel.org/linux-arm-msm/20230120172233.1905761-1-konrad.dybcio@linaro.org/

Sidenote: A speedbin rework is in progress, the of_machine_is_compatible
calls in A619_holi are ugly (but well, necessary..) but they'll be
replaced with socid matching in this or the next kernel cycle.

Due to the new way of identifying GMU wrapper GPUs, configuring 6350
to use wrapper would cause the wrong fuse values to be checked, but that
will be solved by the conversion + the ultimate goal is to use the GMU
whenever possible with the wrapper left for GMU-less Adrenos and early
bringup debugging of GMU-equipped ones.

- Ship dt-bindings in this series as we're referencing the compatible now

- "De-staticize" -> "remove static keyword" [3/15]

- Track down all the values in [4/15]

- Add many comments and explanations in [4/15]

- Fix possible return-before-mutex-unlock [5/15]

- Explain the GMU wrapper a bit more in the commit msg [5/15]

- Separate out pm_resume/suspend for GMU-wrapper GPUs to make things
  cleaner [5/15]

- Don't check if `info` exists, it has to at this point [5/15]

- Assign gpu->info early and clean up following if statements in
  a6xx_gpu_init [5/15]

- Determine whether we use GMU wrapper based on the GMU compatible
  instead of a quirk [5/15]

- Use a struct field to annotate whether we're using gmu wrapper so
  that it can be assigned at runtime (turns out a619 holi-ness cannot
  be determined by patchid + that will make it easier to test out GMU
  GPUs without actually turning on the GMU if anybody wants to do so)
  [5/15]

- Unconditionally hook up gx to the gmu wrapper (otherwise our gpu
  will not get power) [5/15]

- Don't check for gx domain presence in gmu_wrapper paths, it's
  guaranteed [5/15]

- Use opp set rate in the gmuwrapper suspend path [5/15]

- Call opp functions on the GPU device and not on the DRM device of
  mdp4/5/DPU1 half the time (WHOOOOPS!) [5/15]

- Disable the memory clock in a6xx_pm_suspend instead of enabling it
  (moderate oops) [5/15]

- Call the forgotten clk_bulk_disable_unprepare in a6xx_pm_suspend [5/15]

- Set rate to FMIN (a6xx really doesn't like rate=0 + that's what
  msm-5.x does anyway) before disabling core clock [5/15]

- pm_runtime_get_sync -> pm_runtime_resume_and_get [5/15]

- Don't annotate no cached BO support with a quirk, as A619_holi is
  merged into the A619 entry in the big const struct - this means
  that all GPUs operating in gmu wrapper configuration will be
  implicitly treated as if they didn't have this feature [7/15]

- Drop OPP rate & icc related patches, they're a part of a separate
  series now; rebase on it

- Clean up extra parentheses [8/15]

- Identify A619_holi by checking the compatible of its GMU instead
  of patchlevel [8/15]

- Drop "Fix up A6XX protected registers" - unnecessary, Rob will add
  a comment explaining why

- Fix existing UBWC values for A680, new patch [10/15]

- Use adreno_is_aXYZ macros in speedbin matching [13/15] - new patch

v2: https://lore.kernel.org/linux-arm-msm/20230214173145.2482651-1-konrad.dybcio@linaro.org/

v1 -> v2:
- Fix A630 values in [2/14]
- Fix [6/14] for GMU-equipped GPUs

Link to v1: https://lore.kernel.org/linux-arm-msm/20230126151618.225127-1-konrad.dybcio@linaro.org/

This series concludes my couple-weeks-long suffering of figuring out
the ins and outs of the "non-standard" A6xx GPUs which feature no GMU.

The GMU functionality is essentially emulated by parting out a
"GMU wrapper" region, which is essentially just a register space
within the GPU. It's modeled to be as similar to the actual GMU
as possible while staying as unnecessary as we can make it - there's
no IRQs, communicating with a microcontroller, no RPMh communication
etc. etc. I tried to reuse as much code as possible without making
a mess where every even line is used for GMU and every odd line is
used for GMU wrapper..

This series contains:
- plumbing for non-GMU operation, if-ing out GMU calls based on
  GMU presence
- GMU wrapper support
- A610 support (w/ speedbin)
- A619 support (w/ speedbin)
- couple of minor fixes and improvements
- VDDCX/VDDGX scaling fix for non-GMU GPUs (concerns more than just
  A6xx)
- Enablement of opp interconnect properties

A619_holi works perfectly fine using the already-present A619 support
in mesa. A610 needs more work on that front, but can already replay
command traces captures on downstream.

NOTE: the "drm/msm/a6xx: Add support for A619_holi" patch contains
two occurences of 0x18 used in place of a register #define, as it's
supposed to be RBBM_GPR0_CNTL, but that will only be present after
mesa-side changes are merged and headers are synced from there.

Speedbin patches depend on:
https://lore.kernel.org/linux-arm-msm/20230120172233.1905761-1-konrad.dybcio@linaro.org/

Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
---
Konrad Dybcio (20):
      dt-bindings: display/msm: gpu: Document GMU wrapper-equipped A6xx
      dt-bindings: display/msm/gmu: Add GMU wrapper
      drm/msm/adreno: Use adreno_is_revn for A690
      drm/msm/a6xx: Remove static keyword from sptprac en/disable functions
      drm/msm/a6xx: Move force keepalive vote removal to a6xx_gmu_force_off()
      drm/msm/a6xx: Move a6xx_bus_clear_pending_transactions to a6xx_gpu
      drm/msm/a6xx: Improve a6xx_bus_clear_pending_transactions()
      drm/msm/a6xx: Add a helper for software-resetting the GPU
      drm/msm/a6xx: Remove both GBIF and RBBM GBIF halt on hw init
      drm/msm/a6xx: Extend and explain UBWC config
      drm/msm/a6xx: Move CX GMU power counter enablement to hw_init
      drm/msm/a6xx: Introduce GMU wrapper support
      drm/msm/adreno: Disable has_cached_coherent in GMU wrapper configurations
      drm/msm/a6xx: Add support for A619_holi
      drm/msm/a6xx: Add A610 support
      drm/msm/a6xx: Fix some A619 tunables
      drm/msm/a6xx: Use "else if" in GPU speedbin rev matching
      drm/msm/a6xx: Use adreno_is_aXYZ macros in speedbin matching
      drm/msm/a6xx: Add A619_holi speedbin support
      drm/msm/a6xx: Add A610 speedbin support

 .../devicetree/bindings/display/msm/gmu.yaml       |  50 +-
 .../devicetree/bindings/display/msm/gpu.yaml       |  61 ++-
 drivers/gpu/drm/msm/adreno/a6xx_gmu.c              | 128 ++++--
 drivers/gpu/drm/msm/adreno/a6xx_gmu.h              |   2 +
 drivers/gpu/drm/msm/adreno/a6xx_gpu.c              | 512 ++++++++++++++++++---
 drivers/gpu/drm/msm/adreno/a6xx_gpu.h              |   4 +
 drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c        |  14 +-
 drivers/gpu/drm/msm/adreno/adreno_device.c         |  17 +-
 drivers/gpu/drm/msm/adreno/adreno_gpu.c            |   8 +-
 drivers/gpu/drm/msm/adreno/adreno_gpu.h            |  36 +-
 10 files changed, 685 insertions(+), 147 deletions(-)
---
base-commit: 925294c9aa184801cc0a451b69a18dd0fe7d847d
change-id: 20230223-topic-gmuwrapper-b4fff5fd7789

Best regards,
-- 
Konrad Dybcio <konrad.dybcio@linaro.org>

[PATCH v9 01/20] dt-bindings: display/msm: gpu: Document GMU wrapper-equipped A6xx

[Konrad Dybcio]

The "GMU Wrapper" is Qualcomm's name for "let's treat the GPU blocks
we'd normally assign to the GMU as if they were a part of the GMU, even
though they are not". It's a (good) software representation of the GMU_CX
and GMU_GX register spaces within the GPUSS that helps us programatically
treat these de-facto GMU-less parts in a way that's very similar to their
GMU-equipped cousins, massively saving up on code duplication.

The "wrapper" register space was specifically designed to mimic the layout
of a real GMU, though it rather obviously does not have the M3 core et al.

GMU wrapper-equipped A6xx GPUs require clocks and clock-names to be
specified under the GPU node, just like their older cousins. Account
for that.

Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
---
 .../devicetree/bindings/display/msm/gpu.yaml       | 61 ++++++++++++++++++----
 1 file changed, 52 insertions(+), 9 deletions(-)

diff --git a/Documentation/devicetree/bindings/display/msm/gpu.yaml b/Documentation/devicetree/bindings/display/msm/gpu.yaml
index 5dabe7b6794b..58ca8912a8c3 100644
--- a/Documentation/devicetree/bindings/display/msm/gpu.yaml
+++ b/Documentation/devicetree/bindings/display/msm/gpu.yaml
@@ -36,10 +36,7 @@ properties:
 
   reg-names:
     minItems: 1
-    items:
-      - const: kgsl_3d0_reg_memory
-      - const: cx_mem
-      - const: cx_dbgc
+    maxItems: 3
 
   interrupts:
     maxItems: 1
@@ -157,16 +154,62 @@ allOf:
       required:
         - clocks
         - clock-names
+
   - if:
       properties:
         compatible:
           contains:
-            pattern: '^qcom,adreno-6[0-9][0-9]\.[0-9]$'
-
-    then: # Since Adreno 6xx series clocks should be defined in GMU
+            enum:
+              - qcom,adreno-610.0
+              - qcom,adreno-619.1
+    then:
       properties:
-        clocks: false
-        clock-names: false
+        clocks:
+          minItems: 6
+          maxItems: 6
+
+        clock-names:
+          items:
+            - const: core
+              description: GPU Core clock
+            - const: iface
+              description: GPU Interface clock
+            - const: mem_iface
+              description: GPU Memory Interface clock
+            - const: alt_mem_iface
+              description: GPU Alternative Memory Interface clock
+            - const: gmu
+              description: CX GMU clock
+            - const: xo
+              description: GPUCC clocksource clock
+
+        reg-names:
+          minItems: 1
+          items:
+            - const: kgsl_3d0_reg_memory
+            - const: cx_dbgc
+
+      required:
+        - clocks
+        - clock-names
+    else:
+      if:
+        properties:
+          compatible:
+            contains:
+              pattern: '^qcom,adreno-6[0-9][0-9]\.[0-9]$'
+
+      then: # Starting with A6xx, the clocks are usually defined in the GMU node
+        properties:
+          clocks: false
+          clock-names: false
+
+          reg-names:
+            minItems: 1
+            items:
+              - const: kgsl_3d0_reg_memory
+              - const: cx_mem
+              - const: cx_dbgc
 
 examples:
   - |

-- 
2.41.0

[PATCH v9 02/20] dt-bindings: display/msm/gmu: Add GMU wrapper

[Konrad Dybcio]

The "GMU Wrapper" is Qualcomm's name for "let's treat the GPU blocks
we'd normally assign to the GMU as if they were a part of the GMU, even
though they are not". It's a (good) software representation of the GMU_CX
and GMU_GX register spaces within the GPUSS that helps us programatically
treat these de-facto GMU-less parts in a way that's very similar to their
GMU-equipped cousins, massively saving up on code duplication.

The "wrapper" register space was specifically designed to mimic the layout
of a real GMU, though it rather obviously does not have the M3 core et al.

To sum it all up, the GMU wrapper is essentially a register space within
the GPU, which Linux sees as a dumbed-down regular GMU: there's no clocks,
interrupts, multiple reg spaces, iommus and OPP. Document it.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
---
 .../devicetree/bindings/display/msm/gmu.yaml       | 50 ++++++++++++++++------
 1 file changed, 38 insertions(+), 12 deletions(-)

diff --git a/Documentation/devicetree/bindings/display/msm/gmu.yaml b/Documentation/devicetree/bindings/display/msm/gmu.yaml
index f31a26305ca9..5fc4106110ad 100644
--- a/Documentation/devicetree/bindings/display/msm/gmu.yaml
+++ b/Documentation/devicetree/bindings/display/msm/gmu.yaml
@@ -19,16 +19,18 @@ description: |
 
 properties:
   compatible:
-    items:
-      - pattern: '^qcom,adreno-gmu-6[0-9][0-9]\.[0-9]$'
-      - const: qcom,adreno-gmu
+    oneOf:
+      - items:
+          - pattern: '^qcom,adreno-gmu-6[0-9][0-9]\.[0-9]$'
+          - const: qcom,adreno-gmu
+      - const: qcom,adreno-gmu-wrapper
 
   reg:
-    minItems: 3
+    minItems: 1
     maxItems: 4
 
   reg-names:
-    minItems: 3
+    minItems: 1
     maxItems: 4
 
   clocks:
@@ -44,7 +46,6 @@ properties:
       - description: GMU HFI interrupt
       - description: GMU interrupt
 
-
   interrupt-names:
     items:
       - const: hfi
@@ -72,14 +73,8 @@ required:
   - compatible
   - reg
   - reg-names
-  - clocks
-  - clock-names
-  - interrupts
-  - interrupt-names
   - power-domains
   - power-domain-names
-  - iommus
-  - operating-points-v2
 
 additionalProperties: false
 
@@ -218,6 +213,28 @@ allOf:
             - const: axi
             - const: memnoc
 
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: qcom,adreno-gmu-wrapper
+    then:
+      properties:
+        reg:
+          items:
+            - description: GMU wrapper register space
+        reg-names:
+          items:
+            - const: gmu
+    else:
+      required:
+        - clocks
+        - clock-names
+        - interrupts
+        - interrupt-names
+        - iommus
+        - operating-points-v2
+
 examples:
   - |
     #include <dt-bindings/clock/qcom,gpucc-sdm845.h>
@@ -250,3 +267,12 @@ examples:
         iommus = <&adreno_smmu 5>;
         operating-points-v2 = <&gmu_opp_table>;
     };
+
+    gmu_wrapper: gmu@596a000 {
+        compatible = "qcom,adreno-gmu-wrapper";
+        reg = <0x0596a000 0x30000>;
+        reg-names = "gmu";
+        power-domains = <&gpucc GPU_CX_GDSC>,
+                        <&gpucc GPU_GX_GDSC>;
+        power-domain-names = "cx", "gx";
+    };

-- 
2.41.0

[PATCH v9 03/20] drm/msm/adreno: Use adreno_is_revn for A690

[Konrad Dybcio]

The adreno_is_revn rework came at the same time as A690 introduction
and that resulted in it not covering all cases. Fix it.

Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
---
 drivers/gpu/drm/msm/adreno/adreno_gpu.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.h b/drivers/gpu/drm/msm/adreno/adreno_gpu.h
index 9a7626c7ac4d..5a26c8a2de7c 100644
--- a/drivers/gpu/drm/msm/adreno/adreno_gpu.h
+++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.h
@@ -286,7 +286,7 @@ static inline int adreno_is_a660(const struct adreno_gpu *gpu)
 
 static inline int adreno_is_a690(const struct adreno_gpu *gpu)
 {
-	return gpu->revn == 690;
+	return adreno_is_revn(gpu, 690);
 };
 
 /* check for a615, a616, a618, a619 or any derivatives */

-- 
2.41.0

[PATCH v9 04/20] drm/msm/a6xx: Remove static keyword from sptprac en/disable functions

[Konrad Dybcio]

These two will be reused by at least A619_holi in the non-gmu
paths. Turn them non-static them to make it possible.

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
---
 drivers/gpu/drm/msm/adreno/a6xx_gmu.c | 4 ++--
 drivers/gpu/drm/msm/adreno/a6xx_gmu.h | 2 ++
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
index 8914992378f2..a6fa273d700e 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
@@ -354,7 +354,7 @@ void a6xx_gmu_clear_oob(struct a6xx_gmu *gmu, enum a6xx_gmu_oob_state state)
 }
 
 /* Enable CPU control of SPTP power power collapse */
-static int a6xx_sptprac_enable(struct a6xx_gmu *gmu)
+int a6xx_sptprac_enable(struct a6xx_gmu *gmu)
 {
 	int ret;
 	u32 val;
@@ -376,7 +376,7 @@ static int a6xx_sptprac_enable(struct a6xx_gmu *gmu)
 }
 
 /* Disable CPU control of SPTP power power collapse */
-static void a6xx_sptprac_disable(struct a6xx_gmu *gmu)
+void a6xx_sptprac_disable(struct a6xx_gmu *gmu)
 {
 	u32 val;
 	int ret;
diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gmu.h b/drivers/gpu/drm/msm/adreno/a6xx_gmu.h
index 4759a8ce51e4..236f81a43caa 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gmu.h
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gmu.h
@@ -193,5 +193,7 @@ int a6xx_hfi_set_freq(struct a6xx_gmu *gmu, int index);
 
 bool a6xx_gmu_gx_is_on(struct a6xx_gmu *gmu);
 bool a6xx_gmu_sptprac_is_on(struct a6xx_gmu *gmu);
+void a6xx_sptprac_disable(struct a6xx_gmu *gmu);
+int a6xx_sptprac_enable(struct a6xx_gmu *gmu);
 
 #endif

-- 
2.41.0

[PATCH v9 05/20] drm/msm/a6xx: Move force keepalive vote removal to a6xx_gmu_force_off()

[Konrad Dybcio]

As pointed out by Akhil during the review process of GMU wrapper
introduction [1], it makes sense to move this write into the function
that's responsible for forcibly shutting the GMU off.

It is also very convenient to move this to GMU-specific code, so that
it does not have to be guarded by an if-condition to avoid calling it
on GMU wrapper targets.

Move the write to the aforementioned a6xx_gmu_force_off() to achieve
that. No effective functional change.

[1] https://lore.kernel.org/linux-arm-msm/20230501194022.GA18382@akhilpo-linux.qualcomm.com/

Reviewed-by: Akhil P Oommen <quic_akhilpo@quicinc.com>
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
---
 drivers/gpu/drm/msm/adreno/a6xx_gmu.c | 6 ++++++
 drivers/gpu/drm/msm/adreno/a6xx_gpu.c | 6 ------
 2 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
index a6fa273d700e..32852c161aab 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
@@ -912,6 +912,12 @@ static void a6xx_gmu_force_off(struct a6xx_gmu *gmu)
 	struct adreno_gpu *adreno_gpu = &a6xx_gpu->base;
 	struct msm_gpu *gpu = &adreno_gpu->base;
 
+	/*
+	 * Turn off keep alive that might have been enabled by the hang
+	 * interrupt
+	 */
+	gmu_write(&a6xx_gpu->gmu, REG_A6XX_GMU_GMU_PWR_COL_KEEPALIVE, 0);
+
 	/* Flush all the queues */
 	a6xx_hfi_stop(gmu);
 
diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
index ab5c446e4409..eebb4bc7c0f9 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
@@ -1382,12 +1382,6 @@ static void a6xx_recover(struct msm_gpu *gpu)
 	/* Halt SQE first */
 	gpu_write(gpu, REG_A6XX_CP_SQE_CNTL, 3);
 
-	/*
-	 * Turn off keep alive that might have been enabled by the hang
-	 * interrupt
-	 */
-	gmu_write(&a6xx_gpu->gmu, REG_A6XX_GMU_GMU_PWR_COL_KEEPALIVE, 0);
-
 	pm_runtime_dont_use_autosuspend(&gpu->pdev->dev);
 
 	/* active_submit won't change until we make a submission */

-- 
2.41.0

[PATCH v9 06/20] drm/msm/a6xx: Move a6xx_bus_clear_pending_transactions to a6xx_gpu

[Konrad Dybcio]

This function is responsible for telling the GPU to halt transactions
on all of its relevant buses, drain them and leave them in a predictable
state, so that the GPU can be e.g. reset cleanly.

Move the function to a6xx_gpu.c, remove the static keyword and add a
prototype in a6xx_gpu.h to accomodate for the move.

Reviewed-by: Akhil P Oommen <quic_akhilpo@quicinc.com>
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
---
 drivers/gpu/drm/msm/adreno/a6xx_gmu.c | 37 -----------------------------------
 drivers/gpu/drm/msm/adreno/a6xx_gpu.c | 36 ++++++++++++++++++++++++++++++++++
 drivers/gpu/drm/msm/adreno/a6xx_gpu.h |  2 ++
 3 files changed, 38 insertions(+), 37 deletions(-)

diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
index 32852c161aab..6402544f6849 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
@@ -868,43 +868,6 @@ static void a6xx_gmu_rpmh_off(struct a6xx_gmu *gmu)
 		(val & 1), 100, 1000);
 }
 
-#define GBIF_CLIENT_HALT_MASK             BIT(0)
-#define GBIF_ARB_HALT_MASK                BIT(1)
-
-static void a6xx_bus_clear_pending_transactions(struct adreno_gpu *adreno_gpu,
-		bool gx_off)
-{
-	struct msm_gpu *gpu = &adreno_gpu->base;
-
-	if (!a6xx_has_gbif(adreno_gpu)) {
-		gpu_write(gpu, REG_A6XX_VBIF_XIN_HALT_CTRL0, 0xf);
-		spin_until((gpu_read(gpu, REG_A6XX_VBIF_XIN_HALT_CTRL1) &
-								0xf) == 0xf);
-		gpu_write(gpu, REG_A6XX_VBIF_XIN_HALT_CTRL0, 0);
-
-		return;
-	}
-
-	if (gx_off) {
-		/* Halt the gx side of GBIF */
-		gpu_write(gpu, REG_A6XX_RBBM_GBIF_HALT, 1);
-		spin_until(gpu_read(gpu, REG_A6XX_RBBM_GBIF_HALT_ACK) & 1);
-	}
-
-	/* Halt new client requests on GBIF */
-	gpu_write(gpu, REG_A6XX_GBIF_HALT, GBIF_CLIENT_HALT_MASK);
-	spin_until((gpu_read(gpu, REG_A6XX_GBIF_HALT_ACK) &
-			(GBIF_CLIENT_HALT_MASK)) == GBIF_CLIENT_HALT_MASK);
-
-	/* Halt all AXI requests on GBIF */
-	gpu_write(gpu, REG_A6XX_GBIF_HALT, GBIF_ARB_HALT_MASK);
-	spin_until((gpu_read(gpu,  REG_A6XX_GBIF_HALT_ACK) &
-			(GBIF_ARB_HALT_MASK)) == GBIF_ARB_HALT_MASK);
-
-	/* The GBIF halt needs to be explicitly cleared */
-	gpu_write(gpu, REG_A6XX_GBIF_HALT, 0x0);
-}
-
 /* Force the GMU off in case it isn't responsive */
 static void a6xx_gmu_force_off(struct a6xx_gmu *gmu)
 {
diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
index eebb4bc7c0f9..a48f4e3a754a 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
@@ -1705,6 +1705,42 @@ static void a6xx_llc_slices_init(struct platform_device *pdev,
 		a6xx_gpu->llc_mmio = ERR_PTR(-EINVAL);
 }
 
+#define GBIF_CLIENT_HALT_MASK             BIT(0)
+#define GBIF_ARB_HALT_MASK                BIT(1)
+
+void a6xx_bus_clear_pending_transactions(struct adreno_gpu *adreno_gpu, bool gx_off)
+{
+	struct msm_gpu *gpu = &adreno_gpu->base;
+
+	if (!a6xx_has_gbif(adreno_gpu)) {
+		gpu_write(gpu, REG_A6XX_VBIF_XIN_HALT_CTRL0, 0xf);
+		spin_until((gpu_read(gpu, REG_A6XX_VBIF_XIN_HALT_CTRL1) &
+								0xf) == 0xf);
+		gpu_write(gpu, REG_A6XX_VBIF_XIN_HALT_CTRL0, 0);
+
+		return;
+	}
+
+	if (gx_off) {
+		/* Halt the gx side of GBIF */
+		gpu_write(gpu, REG_A6XX_RBBM_GBIF_HALT, 1);
+		spin_until(gpu_read(gpu, REG_A6XX_RBBM_GBIF_HALT_ACK) & 1);
+	}
+
+	/* Halt new client requests on GBIF */
+	gpu_write(gpu, REG_A6XX_GBIF_HALT, GBIF_CLIENT_HALT_MASK);
+	spin_until((gpu_read(gpu, REG_A6XX_GBIF_HALT_ACK) &
+			(GBIF_CLIENT_HALT_MASK)) == GBIF_CLIENT_HALT_MASK);
+
+	/* Halt all AXI requests on GBIF */
+	gpu_write(gpu, REG_A6XX_GBIF_HALT, GBIF_ARB_HALT_MASK);
+	spin_until((gpu_read(gpu,  REG_A6XX_GBIF_HALT_ACK) &
+			(GBIF_ARB_HALT_MASK)) == GBIF_ARB_HALT_MASK);
+
+	/* The GBIF halt needs to be explicitly cleared */
+	gpu_write(gpu, REG_A6XX_GBIF_HALT, 0x0);
+}
+
 static int a6xx_pm_resume(struct msm_gpu *gpu)
 {
 	struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu);
diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu.h b/drivers/gpu/drm/msm/adreno/a6xx_gpu.h
index eea2e60ce3b7..9580def06d45 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gpu.h
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu.h
@@ -88,4 +88,6 @@ void a6xx_show(struct msm_gpu *gpu, struct msm_gpu_state *state,
 struct msm_gpu_state *a6xx_gpu_state_get(struct msm_gpu *gpu);
 int a6xx_gpu_state_put(struct msm_gpu_state *state);
 
+void a6xx_bus_clear_pending_transactions(struct adreno_gpu *adreno_gpu, bool gx_off);
+
 #endif /* __A6XX_GPU_H__ */

-- 
2.41.0

[PATCH v9 07/20] drm/msm/a6xx: Improve a6xx_bus_clear_pending_transactions()

[Konrad Dybcio]

Unify the indentation and explain the cryptic 0xF value.

Reviewed-by: Akhil P Oommen <quic_akhilpo@quicinc.com>
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
---
 drivers/gpu/drm/msm/adreno/a6xx_gpu.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
index a48f4e3a754a..d5bd008c2947 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
@@ -1705,17 +1705,18 @@ static void a6xx_llc_slices_init(struct platform_device *pdev,
 		a6xx_gpu->llc_mmio = ERR_PTR(-EINVAL);
 }
 
-#define GBIF_CLIENT_HALT_MASK             BIT(0)
-#define GBIF_ARB_HALT_MASK                BIT(1)
+#define GBIF_CLIENT_HALT_MASK		BIT(0)
+#define GBIF_ARB_HALT_MASK		BIT(1)
+#define VBIF_XIN_HALT_CTRL0_MASK	GENMASK(3, 0)
 
 void a6xx_bus_clear_pending_transactions(struct adreno_gpu *adreno_gpu, bool gx_off)
 {
 	struct msm_gpu *gpu = &adreno_gpu->base;
 
 	if (!a6xx_has_gbif(adreno_gpu)) {
-		gpu_write(gpu, REG_A6XX_VBIF_XIN_HALT_CTRL0, 0xf);
+		gpu_write(gpu, REG_A6XX_VBIF_XIN_HALT_CTRL0, VBIF_XIN_HALT_CTRL0_MASK);
 		spin_until((gpu_read(gpu, REG_A6XX_VBIF_XIN_HALT_CTRL1) &
-								0xf) == 0xf);
+				(VBIF_XIN_HALT_CTRL0_MASK)) == VBIF_XIN_HALT_CTRL0_MASK);
 		gpu_write(gpu, REG_A6XX_VBIF_XIN_HALT_CTRL0, 0);
 
 		return;

-- 
2.41.0

[PATCH v9 08/20] drm/msm/a6xx: Add a helper for software-resetting the GPU

[Konrad Dybcio]

Introduce a6xx_gpu_sw_reset() in preparation for adding GMU wrapper
GPUs and reuse it in a6xx_gmu_force_off().

This helper, contrary to the original usage in GMU code paths, adds
a readback+delay sequence to ensure that the reset is never deasserted
too quickly due to e.g. OoO execution going crazy.

Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
---
 drivers/gpu/drm/msm/adreno/a6xx_gmu.c |  3 +--
 drivers/gpu/drm/msm/adreno/a6xx_gpu.c | 12 ++++++++++++
 drivers/gpu/drm/msm/adreno/a6xx_gpu.h |  1 +
 3 files changed, 14 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
index 6402544f6849..906bed49f27d 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
@@ -899,8 +899,7 @@ static void a6xx_gmu_force_off(struct a6xx_gmu *gmu)
 	a6xx_bus_clear_pending_transactions(adreno_gpu, true);
 
 	/* Reset GPU core blocks */
-	gpu_write(gpu, REG_A6XX_RBBM_SW_RESET_CMD, 1);
-	udelay(100);
+	a6xx_gpu_sw_reset(gpu, true);
 }
 
 static void a6xx_gmu_set_initial_freq(struct msm_gpu *gpu, struct a6xx_gmu *gmu)
diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
index d5bd008c2947..b627be3f6360 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
@@ -1742,6 +1742,18 @@ void a6xx_bus_clear_pending_transactions(struct adreno_gpu *adreno_gpu, bool gx_
 	gpu_write(gpu, REG_A6XX_GBIF_HALT, 0x0);
 }
 
+void a6xx_gpu_sw_reset(struct msm_gpu *gpu, bool assert)
+{
+	gpu_write(gpu, REG_A6XX_RBBM_SW_RESET_CMD, assert);
+	/* Perform a bogus read and add a brief delay to ensure ordering. */
+	gpu_read(gpu, REG_A6XX_RBBM_SW_RESET_CMD);
+	udelay(1);
+
+	/* The reset line needs to be asserted for at least 100 us */
+	if (assert)
+		udelay(100);
+}
+
 static int a6xx_pm_resume(struct msm_gpu *gpu)
 {
 	struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu);
diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu.h b/drivers/gpu/drm/msm/adreno/a6xx_gpu.h
index 9580def06d45..aa70390ee1c6 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gpu.h
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu.h
@@ -89,5 +89,6 @@ struct msm_gpu_state *a6xx_gpu_state_get(struct msm_gpu *gpu);
 int a6xx_gpu_state_put(struct msm_gpu_state *state);
 
 void a6xx_bus_clear_pending_transactions(struct adreno_gpu *adreno_gpu, bool gx_off);
+void a6xx_gpu_sw_reset(struct msm_gpu *gpu, bool assert);
 
 #endif /* __A6XX_GPU_H__ */

-- 
2.41.0

[PATCH v9 09/20] drm/msm/a6xx: Remove both GBIF and RBBM GBIF halt on hw init

[Konrad Dybcio]

Currently we're only deasserting REG_A6XX_RBBM_GBIF_HALT, but we also
need REG_A6XX_GBIF_HALT to be set to 0.

This is typically done automatically on successful GX collapse, but in
case that fails, we should take care of it.

Also, add a memory barrier to ensure it's gone through before jumping
to further initialization.

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
---
 drivers/gpu/drm/msm/adreno/a6xx_gpu.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
index b627be3f6360..7e0d1dfcd993 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
@@ -1111,8 +1111,12 @@ static int hw_init(struct msm_gpu *gpu)
 	a6xx_gmu_set_oob(&a6xx_gpu->gmu, GMU_OOB_GPU_SET);
 
 	/* Clear GBIF halt in case GX domain was not collapsed */
-	if (a6xx_has_gbif(adreno_gpu))
+	if (a6xx_has_gbif(adreno_gpu)) {
+		gpu_write(gpu, REG_A6XX_GBIF_HALT, 0);
 		gpu_write(gpu, REG_A6XX_RBBM_GBIF_HALT, 0);
+		/* Let's make extra sure that the GPU can access the memory.. */
+		mb();
+	}
 
 	gpu_write(gpu, REG_A6XX_RBBM_SECVID_TSB_CNTL, 0);
 

-- 
2.41.0

[PATCH v9 10/20] drm/msm/a6xx: Extend and explain UBWC config

[Konrad Dybcio]

Rename lower_bit to hbb_lo and explain what it signifies.
Add explanations (wherever possible to other tunables).

Port setting min_access_length, ubwc_mode and hbb_hi from downstream.

Reviewed-by: Rob Clark <robdclark@gmail.com>
Reviewed-by: Akhil P Oommen <quic_akhilpo@quicinc.com>
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
---
 drivers/gpu/drm/msm/adreno/a6xx_gpu.c | 41 ++++++++++++++++++++++++++---------
 1 file changed, 31 insertions(+), 10 deletions(-)

diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
index 7e0d1dfcd993..8aa4670b4308 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
@@ -887,10 +887,25 @@ static void a6xx_set_cp_protect(struct msm_gpu *gpu)
 static void a6xx_set_ubwc_config(struct msm_gpu *gpu)
 {
 	struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu);
-	u32 lower_bit = 2;
-	u32 amsbc = 0;
+	/* Unknown, introduced with A650 family, related to UBWC mode/ver 4 */
 	u32 rgb565_predicator = 0;
+	/* Unknown, introduced with A650 family */
 	u32 uavflagprd_inv = 0;
+	/* Whether the minimum access length is 64 bits */
+	u32 min_acc_len = 0;
+	/* Entirely magic, per-GPU-gen value */
+	u32 ubwc_mode = 0;
+	/*
+	 * The Highest Bank Bit value represents the bit of the highest DDR bank.
+	 * We then subtract 13 from it (13 is the minimum value allowed by hw) and
+	 * write the lowest two bits of the remaining value as hbb_lo and the
+	 * one above it as hbb_hi to the hardware. This should ideally use DRAM
+	 * type detection.
+	 */
+	u32 hbb_hi = 0;
+	u32 hbb_lo = 2;
+	/* Unknown, introduced with A640/680 */
+	u32 amsbc = 0;
 
 	/* a618 is using the hw default values */
 	if (adreno_is_a618(adreno_gpu))
@@ -901,32 +916,38 @@ static void a6xx_set_ubwc_config(struct msm_gpu *gpu)
 
 	if (adreno_is_a650(adreno_gpu) || adreno_is_a660(adreno_gpu)) {
 		/* TODO: get ddr type from bootloader and use 2 for LPDDR4 */
-		lower_bit = 3;
+		hbb_lo = 3;
 		amsbc = 1;
 		rgb565_predicator = 1;
 		uavflagprd_inv = 2;
 	}
 
 	if (adreno_is_a690(adreno_gpu)) {
-		lower_bit = 2;
+		hbb_lo = 2;
 		amsbc = 1;
 		rgb565_predicator = 1;
 		uavflagprd_inv = 2;
 	}
 
 	if (adreno_is_7c3(adreno_gpu)) {
-		lower_bit = 1;
+		hbb_lo = 1;
 		amsbc = 1;
 		rgb565_predicator = 1;
 		uavflagprd_inv = 2;
 	}
 
 	gpu_write(gpu, REG_A6XX_RB_NC_MODE_CNTL,
-		rgb565_predicator << 11 | amsbc << 4 | lower_bit << 1);
-	gpu_write(gpu, REG_A6XX_TPL1_NC_MODE_CNTL, lower_bit << 1);
-	gpu_write(gpu, REG_A6XX_SP_NC_MODE_CNTL,
-		uavflagprd_inv << 4 | lower_bit << 1);
-	gpu_write(gpu, REG_A6XX_UCHE_MODE_CNTL, lower_bit << 21);
+		  rgb565_predicator << 11 | hbb_hi << 10 | amsbc << 4 |
+		  min_acc_len << 3 | hbb_lo << 1 | ubwc_mode);
+
+	gpu_write(gpu, REG_A6XX_TPL1_NC_MODE_CNTL, hbb_hi << 4 |
+		  min_acc_len << 3 | hbb_lo << 1 | ubwc_mode);
+
+	gpu_write(gpu, REG_A6XX_SP_NC_MODE_CNTL, hbb_hi << 10 |
+		  uavflagprd_inv << 4 | min_acc_len << 3 |
+		  hbb_lo << 1 | ubwc_mode);
+
+	gpu_write(gpu, REG_A6XX_UCHE_MODE_CNTL, min_acc_len << 23 | hbb_lo << 21);
 }
 
 static int a6xx_cp_init(struct msm_gpu *gpu)

-- 
2.41.0

[PATCH v9 11/20] drm/msm/a6xx: Move CX GMU power counter enablement to hw_init

[Konrad Dybcio]

Since the introduction of A6xx support, we've been enabling the CX GMU
power counter 0 in a bit of a weird spot. Move it to hw_init so that
GMU wrapper GPUs can reuse the same code paths. As a bonus, this order
makes it easier to compare mainline and downstream register access traces.

Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
---
 drivers/gpu/drm/msm/adreno/a6xx_gmu.c | 6 ------
 drivers/gpu/drm/msm/adreno/a6xx_gpu.c | 7 +++++++
 2 files changed, 7 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
index 906bed49f27d..aae7ea651607 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
@@ -479,12 +479,6 @@ static int a6xx_rpmh_start(struct a6xx_gmu *gmu)
 
 	gmu_write(gmu, REG_A6XX_GMU_RSCC_CONTROL_REQ, 0);
 
-	/* Set up CX GMU counter 0 to count busy ticks */
-	gmu_write(gmu, REG_A6XX_GPU_GMU_AO_GPU_CX_BUSY_MASK, 0xff000000);
-	gmu_rmw(gmu, REG_A6XX_GMU_CX_GMU_POWER_COUNTER_SELECT_0, 0xff, 0x20);
-
-	/* Enable the power counter */
-	gmu_write(gmu, REG_A6XX_GMU_CX_GMU_POWER_COUNTER_ENABLE, 1);
 	return 0;
 }
 
diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
index 8aa4670b4308..0efecde2af1a 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
@@ -1256,6 +1256,13 @@ static int hw_init(struct msm_gpu *gpu)
 			0x3f0243f0);
 	}
 
+	/* Set up the CX GMU counter 0 to count busy ticks */
+	gmu_write(gmu, REG_A6XX_GPU_GMU_AO_GPU_CX_BUSY_MASK, 0xff000000);
+
+	/* Enable the power counter */
+	gmu_rmw(gmu, REG_A6XX_GMU_CX_GMU_POWER_COUNTER_SELECT_0, 0xff, BIT(5));
+	gmu_write(gmu, REG_A6XX_GMU_CX_GMU_POWER_COUNTER_ENABLE, 1);
+
 	/* Protect registers from the CP */
 	a6xx_set_cp_protect(gpu);
 

-- 
2.41.0

[PATCH v9 12/20] drm/msm/a6xx: Introduce GMU wrapper support

[Konrad Dybcio]

Some (particularly SMD_RPM, a.k.a non-RPMh) SoCs implement A6XX GPUs
but don't implement the associated GMUs. This is due to the fact that
the GMU directly pokes at RPMh. Sadly, this means we have to take care
of enabling & scaling power rails, clocks and bandwidth ourselves.

Reuse existing Adreno-common code and modify the deeply-GMU-infused
A6XX code to facilitate these GPUs. This involves if-ing out lots
of GMU callbacks and introducing a new type of GMU - GMU wrapper (it's
the actual name that Qualcomm uses in their downstream kernels).

This is essentially a register region which is convenient to model
as a device. We'll use it for managing the GDSCs. The register
layout matches the actual GMU_CX/GX regions on the "real GMU" devices
and lets us reuse quite a bit of gmu_read/write/rmw calls.

Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
---
 drivers/gpu/drm/msm/adreno/a6xx_gmu.c       |  72 +++++++++-
 drivers/gpu/drm/msm/adreno/a6xx_gpu.c       | 201 ++++++++++++++++++++++++----
 drivers/gpu/drm/msm/adreno/a6xx_gpu.h       |   1 +
 drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c |  14 +-
 drivers/gpu/drm/msm/adreno/adreno_gpu.c     |   8 +-
 drivers/gpu/drm/msm/adreno/adreno_gpu.h     |   6 +
 6 files changed, 266 insertions(+), 36 deletions(-)

diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
index aae7ea651607..5deb79924897 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
@@ -1431,6 +1431,7 @@ static int a6xx_gmu_get_irq(struct a6xx_gmu *gmu, struct platform_device *pdev,
 
 void a6xx_gmu_remove(struct a6xx_gpu *a6xx_gpu)
 {
+	struct adreno_gpu *adreno_gpu = &a6xx_gpu->base;
 	struct a6xx_gmu *gmu = &a6xx_gpu->gmu;
 	struct platform_device *pdev = to_platform_device(gmu->dev);
 
@@ -1456,10 +1457,12 @@ void a6xx_gmu_remove(struct a6xx_gpu *a6xx_gpu)
 	gmu->mmio = NULL;
 	gmu->rscc = NULL;
 
-	a6xx_gmu_memory_free(gmu);
+	if (!adreno_has_gmu_wrapper(adreno_gpu)) {
+		a6xx_gmu_memory_free(gmu);
 
-	free_irq(gmu->gmu_irq, gmu);
-	free_irq(gmu->hfi_irq, gmu);
+		free_irq(gmu->gmu_irq, gmu);
+		free_irq(gmu->hfi_irq, gmu);
+	}
 
 	/* Drop reference taken in of_find_device_by_node */
 	put_device(gmu->dev);
@@ -1478,6 +1481,69 @@ static int cxpd_notifier_cb(struct notifier_block *nb,
 	return 0;
 }
 
+int a6xx_gmu_wrapper_init(struct a6xx_gpu *a6xx_gpu, struct device_node *node)
+{
+	struct platform_device *pdev = of_find_device_by_node(node);
+	struct a6xx_gmu *gmu = &a6xx_gpu->gmu;
+	int ret;
+
+	if (!pdev)
+		return -ENODEV;
+
+	gmu->dev = &pdev->dev;
+
+	of_dma_configure(gmu->dev, node, true);
+
+	pm_runtime_enable(gmu->dev);
+
+	/* Mark legacy for manual SPTPRAC control */
+	gmu->legacy = true;
+
+	/* Map the GMU registers */
+	gmu->mmio = a6xx_gmu_get_mmio(pdev, "gmu");
+	if (IS_ERR(gmu->mmio)) {
+		ret = PTR_ERR(gmu->mmio);
+		goto err_mmio;
+	}
+
+	gmu->cxpd = dev_pm_domain_attach_by_name(gmu->dev, "cx");
+	if (IS_ERR(gmu->cxpd)) {
+		ret = PTR_ERR(gmu->cxpd);
+		goto err_mmio;
+	}
+
+	if (!device_link_add(gmu->dev, gmu->cxpd, DL_FLAG_PM_RUNTIME)) {
+		ret = -ENODEV;
+		goto detach_cxpd;
+	}
+
+	init_completion(&gmu->pd_gate);
+	complete_all(&gmu->pd_gate);
+	gmu->pd_nb.notifier_call = cxpd_notifier_cb;
+
+	/* Get a link to the GX power domain to reset the GPU */
+	gmu->gxpd = dev_pm_domain_attach_by_name(gmu->dev, "gx");
+	if (IS_ERR(gmu->gxpd)) {
+		ret = PTR_ERR(gmu->gxpd);
+		goto err_mmio;
+	}
+
+	gmu->initialized = true;
+
+	return 0;
+
+detach_cxpd:
+	dev_pm_domain_detach(gmu->cxpd, false);
+
+err_mmio:
+	iounmap(gmu->mmio);
+
+	/* Drop reference taken in of_find_device_by_node */
+	put_device(gmu->dev);
+
+	return ret;
+}
+
 int a6xx_gmu_init(struct a6xx_gpu *a6xx_gpu, struct device_node *node)
 {
 	struct adreno_gpu *adreno_gpu = &a6xx_gpu->base;
diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
index 0efecde2af1a..b91fc02eb08c 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
@@ -21,7 +21,7 @@ static inline bool _a6xx_check_idle(struct msm_gpu *gpu)
 	struct a6xx_gpu *a6xx_gpu = to_a6xx_gpu(adreno_gpu);
 
 	/* Check that the GMU is idle */
-	if (!a6xx_gmu_isidle(&a6xx_gpu->gmu))
+	if (!adreno_has_gmu_wrapper(adreno_gpu) && !a6xx_gmu_isidle(&a6xx_gpu->gmu))
 		return false;
 
 	/* Check tha the CX master is idle */
@@ -1126,10 +1126,13 @@ static int hw_init(struct msm_gpu *gpu)
 {
 	struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu);
 	struct a6xx_gpu *a6xx_gpu = to_a6xx_gpu(adreno_gpu);
+	struct a6xx_gmu *gmu = &a6xx_gpu->gmu;
 	int ret;
 
-	/* Make sure the GMU keeps the GPU on while we set it up */
-	a6xx_gmu_set_oob(&a6xx_gpu->gmu, GMU_OOB_GPU_SET);
+	if (!adreno_has_gmu_wrapper(adreno_gpu)) {
+		/* Make sure the GMU keeps the GPU on while we set it up */
+		a6xx_gmu_set_oob(&a6xx_gpu->gmu, GMU_OOB_GPU_SET);
+	}
 
 	/* Clear GBIF halt in case GX domain was not collapsed */
 	if (a6xx_has_gbif(adreno_gpu)) {
@@ -1352,6 +1355,8 @@ static int hw_init(struct msm_gpu *gpu)
 	}
 
 out:
+	if (adreno_has_gmu_wrapper(adreno_gpu))
+		return ret;
 	/*
 	 * Tell the GMU that we are done touching the GPU and it can start power
 	 * management
@@ -1386,9 +1391,6 @@ static void a6xx_dump(struct msm_gpu *gpu)
 	adreno_dump(gpu);
 }
 
-#define VBIF_RESET_ACK_TIMEOUT	100
-#define VBIF_RESET_ACK_MASK	0x00f0
-
 static void a6xx_recover(struct msm_gpu *gpu)
 {
 	struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu);
@@ -1426,6 +1428,15 @@ static void a6xx_recover(struct msm_gpu *gpu)
 	 */
 	gpu->active_submits = 0;
 
+	if (adreno_has_gmu_wrapper(adreno_gpu)) {
+		/* Drain the outstanding traffic on memory buses */
+		a6xx_bus_clear_pending_transactions(adreno_gpu, true);
+
+		/* Reset the GPU to a clean state */
+		a6xx_gpu_sw_reset(gpu, true);
+		a6xx_gpu_sw_reset(gpu, false);
+	}
+
 	reinit_completion(&gmu->pd_gate);
 	dev_pm_genpd_add_notifier(gmu->cxpd, &gmu->pd_nb);
 	dev_pm_genpd_synced_poweroff(gmu->cxpd);
@@ -1576,7 +1587,8 @@ static void a6xx_fault_detect_irq(struct msm_gpu *gpu)
 	 * Force the GPU to stay on until after we finish
 	 * collecting information
 	 */
-	gmu_write(&a6xx_gpu->gmu, REG_A6XX_GMU_GMU_PWR_COL_KEEPALIVE, 1);
+	if (!adreno_has_gmu_wrapper(adreno_gpu))
+		gmu_write(&a6xx_gpu->gmu, REG_A6XX_GMU_GMU_PWR_COL_KEEPALIVE, 1);
 
 	DRM_DEV_ERROR(&gpu->pdev->dev,
 		"gpu fault ring %d fence %x status %8.8X rb %4.4x/%4.4x ib1 %16.16llX/%4.4x ib2 %16.16llX/%4.4x\n",
@@ -1707,6 +1719,10 @@ static void a6xx_llc_activate(struct a6xx_gpu *a6xx_gpu)
 
 static void a6xx_llc_slices_destroy(struct a6xx_gpu *a6xx_gpu)
 {
+	/* No LLCC on non-RPMh (and by extension, non-GMU) SoCs */
+	if (adreno_has_gmu_wrapper(&a6xx_gpu->base))
+		return;
+
 	llcc_slice_putd(a6xx_gpu->llc_slice);
 	llcc_slice_putd(a6xx_gpu->htw_llc_slice);
 }
@@ -1716,6 +1732,10 @@ static void a6xx_llc_slices_init(struct platform_device *pdev,
 {
 	struct device_node *phandle;
 
+	/* No LLCC on non-RPMh (and by extension, non-GMU) SoCs */
+	if (adreno_has_gmu_wrapper(&a6xx_gpu->base))
+		return;
+
 	/*
 	 * There is a different programming path for targets with an mmu500
 	 * attached, so detect if that is the case
@@ -1786,7 +1806,7 @@ void a6xx_gpu_sw_reset(struct msm_gpu *gpu, bool assert)
 		udelay(100);
 }
 
-static int a6xx_pm_resume(struct msm_gpu *gpu)
+static int a6xx_gmu_pm_resume(struct msm_gpu *gpu)
 {
 	struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu);
 	struct a6xx_gpu *a6xx_gpu = to_a6xx_gpu(adreno_gpu);
@@ -1806,10 +1826,58 @@ static int a6xx_pm_resume(struct msm_gpu *gpu)
 
 	a6xx_llc_activate(a6xx_gpu);
 
-	return 0;
+	return ret;
 }
 
-static int a6xx_pm_suspend(struct msm_gpu *gpu)
+static int a6xx_pm_resume(struct msm_gpu *gpu)
+{
+	struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu);
+	struct a6xx_gpu *a6xx_gpu = to_a6xx_gpu(adreno_gpu);
+	struct a6xx_gmu *gmu = &a6xx_gpu->gmu;
+	unsigned long freq = gpu->fast_rate;
+	struct dev_pm_opp *opp;
+	int ret;
+
+	gpu->needs_hw_init = true;
+
+	trace_msm_gpu_resume(0);
+
+	mutex_lock(&a6xx_gpu->gmu.lock);
+
+	opp = dev_pm_opp_find_freq_ceil(&gpu->pdev->dev, &freq);
+	if (IS_ERR(opp)) {
+		ret = PTR_ERR(opp);
+		goto err_set_opp;
+	}
+	dev_pm_opp_put(opp);
+
+	/* Set the core clock and bus bw, having VDD scaling in mind */
+	dev_pm_opp_set_opp(&gpu->pdev->dev, opp);
+
+	pm_runtime_resume_and_get(gmu->dev);
+	pm_runtime_resume_and_get(gmu->gxpd);
+
+	ret = clk_bulk_prepare_enable(gpu->nr_clocks, gpu->grp_clks);
+	if (ret)
+		goto err_bulk_clk;
+
+	/* If anything goes south, tear the GPU down piece by piece.. */
+	if (ret) {
+err_bulk_clk:
+		pm_runtime_put(gmu->gxpd);
+		pm_runtime_put(gmu->dev);
+		dev_pm_opp_set_opp(&gpu->pdev->dev, NULL);
+	}
+err_set_opp:
+	mutex_unlock(&a6xx_gpu->gmu.lock);
+
+	if (!ret)
+		msm_devfreq_resume(gpu);
+
+	return ret;
+}
+
+static int a6xx_gmu_pm_suspend(struct msm_gpu *gpu)
 {
 	struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu);
 	struct a6xx_gpu *a6xx_gpu = to_a6xx_gpu(adreno_gpu);
@@ -1836,7 +1904,40 @@ static int a6xx_pm_suspend(struct msm_gpu *gpu)
 	return 0;
 }
 
-static int a6xx_get_timestamp(struct msm_gpu *gpu, uint64_t *value)
+static int a6xx_pm_suspend(struct msm_gpu *gpu)
+{
+	struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu);
+	struct a6xx_gpu *a6xx_gpu = to_a6xx_gpu(adreno_gpu);
+	struct a6xx_gmu *gmu = &a6xx_gpu->gmu;
+	int i;
+
+	trace_msm_gpu_suspend(0);
+
+	msm_devfreq_suspend(gpu);
+
+	mutex_lock(&a6xx_gpu->gmu.lock);
+
+	/* Drain the outstanding traffic on memory buses */
+	a6xx_bus_clear_pending_transactions(adreno_gpu, true);
+
+	clk_bulk_disable_unprepare(gpu->nr_clocks, gpu->grp_clks);
+
+	pm_runtime_put_sync(gmu->gxpd);
+	dev_pm_opp_set_opp(&gpu->pdev->dev, NULL);
+	pm_runtime_put_sync(gmu->dev);
+
+	mutex_unlock(&a6xx_gpu->gmu.lock);
+
+	if (a6xx_gpu->shadow_bo)
+		for (i = 0; i < gpu->nr_rings; i++)
+			a6xx_gpu->shadow[i] = 0;
+
+	gpu->suspend_count++;
+
+	return 0;
+}
+
+static int a6xx_gmu_get_timestamp(struct msm_gpu *gpu, uint64_t *value)
 {
 	struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu);
 	struct a6xx_gpu *a6xx_gpu = to_a6xx_gpu(adreno_gpu);
@@ -1855,6 +1956,12 @@ static int a6xx_get_timestamp(struct msm_gpu *gpu, uint64_t *value)
 	return 0;
 }
 
+static int a6xx_get_timestamp(struct msm_gpu *gpu, uint64_t *value)
+{
+	*value = gpu_read64(gpu, REG_A6XX_CP_ALWAYS_ON_COUNTER);
+	return 0;
+}
+
 static struct msm_ringbuffer *a6xx_active_ring(struct msm_gpu *gpu)
 {
 	struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu);
@@ -2121,8 +2228,8 @@ static const struct adreno_gpu_funcs funcs = {
 		.set_param = adreno_set_param,
 		.hw_init = a6xx_hw_init,
 		.ucode_load = a6xx_ucode_load,
-		.pm_suspend = a6xx_pm_suspend,
-		.pm_resume = a6xx_pm_resume,
+		.pm_suspend = a6xx_gmu_pm_suspend,
+		.pm_resume = a6xx_gmu_pm_resume,
 		.recover = a6xx_recover,
 		.submit = a6xx_submit,
 		.active_ring = a6xx_active_ring,
@@ -2137,6 +2244,35 @@ static const struct adreno_gpu_funcs funcs = {
 #if defined(CONFIG_DRM_MSM_GPU_STATE)
 		.gpu_state_get = a6xx_gpu_state_get,
 		.gpu_state_put = a6xx_gpu_state_put,
+#endif
+		.create_address_space = a6xx_create_address_space,
+		.create_private_address_space = a6xx_create_private_address_space,
+		.get_rptr = a6xx_get_rptr,
+		.progress = a6xx_progress,
+	},
+	.get_timestamp = a6xx_gmu_get_timestamp,
+};
+
+static const struct adreno_gpu_funcs funcs_gmuwrapper = {
+	.base = {
+		.get_param = adreno_get_param,
+		.set_param = adreno_set_param,
+		.hw_init = a6xx_hw_init,
+		.ucode_load = a6xx_ucode_load,
+		.pm_suspend = a6xx_pm_suspend,
+		.pm_resume = a6xx_pm_resume,
+		.recover = a6xx_recover,
+		.submit = a6xx_submit,
+		.active_ring = a6xx_active_ring,
+		.irq = a6xx_irq,
+		.destroy = a6xx_destroy,
+#if defined(CONFIG_DRM_MSM_GPU_STATE)
+		.show = a6xx_show,
+#endif
+		.gpu_busy = a6xx_gpu_busy,
+#if defined(CONFIG_DRM_MSM_GPU_STATE)
+		.gpu_state_get = a6xx_gpu_state_get,
+		.gpu_state_put = a6xx_gpu_state_put,
 #endif
 		.create_address_space = a6xx_create_address_space,
 		.create_private_address_space = a6xx_create_private_address_space,
@@ -2169,16 +2305,31 @@ struct msm_gpu *a6xx_gpu_init(struct drm_device *dev)
 
 	adreno_gpu->registers = NULL;
 
+	/* Check if there is a GMU phandle and set it up */
+	node = of_parse_phandle(pdev->dev.of_node, "qcom,gmu", 0);
+	/* FIXME: How do we gracefully handle this? */
+	BUG_ON(!node);
+
+	adreno_gpu->gmu_is_wrapper = of_device_is_compatible(node, "qcom,adreno-gmu-wrapper");
+
 	/*
 	 * We need to know the platform type before calling into adreno_gpu_init
 	 * so that the hw_apriv flag can be correctly set. Snoop into the info
 	 * and grab the revision number
 	 */
 	info = adreno_info(config->rev);
-
-	if (info && (info->revn == 650 || info->revn == 660 ||
-		     info->revn == 690 ||
-		     adreno_cmp_rev(ADRENO_REV(6, 3, 5, ANY_ID), info->rev)))
+	if (!info)
+		return ERR_PTR(-EINVAL);
+
+	/* Assign these early so that we can use the is_aXYZ helpers */
+	/* Numeric revision IDs (e.g. 630) */
+	adreno_gpu->revn = info->revn;
+	/* New-style ADRENO_REV()-only */
+	adreno_gpu->rev = info->rev;
+	/* Quirk data */
+	adreno_gpu->info = info;
+
+	if (adreno_is_a650(adreno_gpu) || adreno_is_a660_family(adreno_gpu))
 		adreno_gpu->base.hw_apriv = true;
 
 	a6xx_llc_slices_init(pdev, a6xx_gpu);
@@ -2189,7 +2340,10 @@ struct msm_gpu *a6xx_gpu_init(struct drm_device *dev)
 		return ERR_PTR(ret);
 	}
 
-	ret = adreno_gpu_init(dev, pdev, adreno_gpu, &funcs, 1);
+	if (adreno_has_gmu_wrapper(adreno_gpu))
+		ret = adreno_gpu_init(dev, pdev, adreno_gpu, &funcs_gmuwrapper, 1);
+	else
+		ret = adreno_gpu_init(dev, pdev, adreno_gpu, &funcs, 1);
 	if (ret) {
 		a6xx_destroy(&(a6xx_gpu->base.base));
 		return ERR_PTR(ret);
@@ -2202,13 +2356,10 @@ struct msm_gpu *a6xx_gpu_init(struct drm_device *dev)
 	if (adreno_is_a618(adreno_gpu) || adreno_is_7c3(adreno_gpu))
 		priv->gpu_clamp_to_idle = true;
 
-	/* Check if there is a GMU phandle and set it up */
-	node = of_parse_phandle(pdev->dev.of_node, "qcom,gmu", 0);
-
-	/* FIXME: How do we gracefully handle this? */
-	BUG_ON(!node);
-
-	ret = a6xx_gmu_init(a6xx_gpu, node);
+	if (adreno_has_gmu_wrapper(adreno_gpu))
+		ret = a6xx_gmu_wrapper_init(a6xx_gpu, node);
+	else
+		ret = a6xx_gmu_init(a6xx_gpu, node);
 	of_node_put(node);
 	if (ret) {
 		a6xx_destroy(&(a6xx_gpu->base.base));
diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu.h b/drivers/gpu/drm/msm/adreno/a6xx_gpu.h
index aa70390ee1c6..c788b06e72da 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gpu.h
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu.h
@@ -76,6 +76,7 @@ int a6xx_gmu_set_oob(struct a6xx_gmu *gmu, enum a6xx_gmu_oob_state state);
 void a6xx_gmu_clear_oob(struct a6xx_gmu *gmu, enum a6xx_gmu_oob_state state);
 
 int a6xx_gmu_init(struct a6xx_gpu *a6xx_gpu, struct device_node *node);
+int a6xx_gmu_wrapper_init(struct a6xx_gpu *a6xx_gpu, struct device_node *node);
 void a6xx_gmu_remove(struct a6xx_gpu *a6xx_gpu);
 
 void a6xx_gmu_set_freq(struct msm_gpu *gpu, struct dev_pm_opp *opp,
diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c b/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c
index 30ecdff363e7..4e5d650578c6 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c
@@ -1041,16 +1041,18 @@ struct msm_gpu_state *a6xx_gpu_state_get(struct msm_gpu *gpu)
 	/* Get the generic state from the adreno core */
 	adreno_gpu_state_get(gpu, &a6xx_state->base);
 
-	a6xx_get_gmu_registers(gpu, a6xx_state);
+	if (!adreno_has_gmu_wrapper(adreno_gpu)) {
+		a6xx_get_gmu_registers(gpu, a6xx_state);
 
-	a6xx_state->gmu_log = a6xx_snapshot_gmu_bo(a6xx_state, &a6xx_gpu->gmu.log);
-	a6xx_state->gmu_hfi = a6xx_snapshot_gmu_bo(a6xx_state, &a6xx_gpu->gmu.hfi);
-	a6xx_state->gmu_debug = a6xx_snapshot_gmu_bo(a6xx_state, &a6xx_gpu->gmu.debug);
+		a6xx_state->gmu_log = a6xx_snapshot_gmu_bo(a6xx_state, &a6xx_gpu->gmu.log);
+		a6xx_state->gmu_hfi = a6xx_snapshot_gmu_bo(a6xx_state, &a6xx_gpu->gmu.hfi);
+		a6xx_state->gmu_debug = a6xx_snapshot_gmu_bo(a6xx_state, &a6xx_gpu->gmu.debug);
 
-	a6xx_snapshot_gmu_hfi_history(gpu, a6xx_state);
+		a6xx_snapshot_gmu_hfi_history(gpu, a6xx_state);
+	}
 
 	/* If GX isn't on the rest of the data isn't going to be accessible */
-	if (!a6xx_gmu_gx_is_on(&a6xx_gpu->gmu))
+	if (!adreno_has_gmu_wrapper(adreno_gpu) && !a6xx_gmu_gx_is_on(&a6xx_gpu->gmu))
 		return &a6xx_state->base;
 
 	/* Get the banks of indexed registers */
diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.c b/drivers/gpu/drm/msm/adreno/adreno_gpu.c
index 6934cee07d42..5c5901d65950 100644
--- a/drivers/gpu/drm/msm/adreno/adreno_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.c
@@ -528,6 +528,10 @@ int adreno_load_fw(struct adreno_gpu *adreno_gpu)
 		if (!adreno_gpu->info->fw[i])
 			continue;
 
+		/* Skip loading GMU firwmare with GMU Wrapper */
+		if (adreno_has_gmu_wrapper(adreno_gpu) && i == ADRENO_FW_GMU)
+			continue;
+
 		/* Skip if the firmware has already been loaded */
 		if (adreno_gpu->fw[i])
 			continue;
@@ -1074,8 +1078,8 @@ int adreno_gpu_init(struct drm_device *drm, struct platform_device *pdev,
 	u32 speedbin;
 	int ret;
 
-	/* Only handle the core clock when GMU is not in use */
-	if (config->rev.core < 6) {
+	/* Only handle the core clock when GMU is not in use (or is absent). */
+	if (adreno_has_gmu_wrapper(adreno_gpu) || config->rev.core < 6) {
 		/*
 		 * This can only be done before devm_pm_opp_of_add_table(), or
 		 * dev_pm_opp_set_config() will WARN_ON()
diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.h b/drivers/gpu/drm/msm/adreno/adreno_gpu.h
index 5a26c8a2de7c..de0b03a4b594 100644
--- a/drivers/gpu/drm/msm/adreno/adreno_gpu.h
+++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.h
@@ -115,6 +115,7 @@ struct adreno_gpu {
 	 * code (a3xx_gpu.c) and stored in this common location.
 	 */
 	const unsigned int *reg_offsets;
+	bool gmu_is_wrapper;
 };
 #define to_adreno_gpu(x) container_of(x, struct adreno_gpu, base)
 
@@ -152,6 +153,11 @@ static inline bool adreno_is_revn(const struct adreno_gpu *gpu, uint32_t revn)
 	return gpu->revn == revn;
 }
 
+static inline bool adreno_has_gmu_wrapper(const struct adreno_gpu *gpu)
+{
+	return gpu->gmu_is_wrapper;
+}
+
 static inline bool adreno_is_a2xx(const struct adreno_gpu *gpu)
 {
 	WARN_ON_ONCE(!gpu->revn);

-- 
2.41.0

[PATCH v9 13/20] drm/msm/adreno: Disable has_cached_coherent in GMU wrapper configurations

[Konrad Dybcio]

A610 and A619_holi don't support the feature. Disable it to make the GPU stop
crashing after almost each and every submission - the received data on
the GPU end was simply incomplete in garbled, resulting in almost nothing
being executed properly. Extend the disablement to adreno_has_gmu_wrapper,
as none of the GMU wrapper Adrenos that don't support yet seem to feature it.

Reviewed-by: Akhil P Oommen <quic_akhilpo@quicinc.com>
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
---
 drivers/gpu/drm/msm/adreno/adreno_device.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/msm/adreno/adreno_device.c b/drivers/gpu/drm/msm/adreno/adreno_device.c
index e5a865024e94..6ea24b8ddcf8 100644
--- a/drivers/gpu/drm/msm/adreno/adreno_device.c
+++ b/drivers/gpu/drm/msm/adreno/adreno_device.c
@@ -565,7 +565,6 @@ static int adreno_bind(struct device *dev, struct device *master, void *data)
 		config.rev.minor, config.rev.patchid);
 
 	priv->is_a2xx = config.rev.core == 2;
-	priv->has_cached_coherent = config.rev.core >= 6;
 
 	gpu = info->init(drm);
 	if (IS_ERR(gpu)) {
@@ -577,6 +576,10 @@ static int adreno_bind(struct device *dev, struct device *master, void *data)
 	if (ret)
 		return ret;
 
+	if (config.rev.core >= 6)
+		if (!adreno_has_gmu_wrapper(to_adreno_gpu(gpu)))
+			priv->has_cached_coherent = true;
+
 	return 0;
 }
 

-- 
2.41.0

[PATCH v9 14/20] drm/msm/a6xx: Add support for A619_holi

[Konrad Dybcio]

A619_holi is a GMU-less variant of the already-supported A619 GPU.
It's present on at least SM4350 (holi) and SM6375 (blair). No mesa
changes are required. Add the required kernel-side support for it.

Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
---
 drivers/gpu/drm/msm/adreno/a6xx_gpu.c   | 27 +++++++++++++++++++++++++--
 drivers/gpu/drm/msm/adreno/adreno_gpu.h |  5 +++++
 2 files changed, 30 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
index b91fc02eb08c..2ca9e0440396 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
@@ -911,6 +911,9 @@ static void a6xx_set_ubwc_config(struct msm_gpu *gpu)
 	if (adreno_is_a618(adreno_gpu))
 		return;
 
+	if (adreno_is_a619_holi(adreno_gpu))
+		hbb_lo = 0;
+
 	if (adreno_is_a640_family(adreno_gpu))
 		amsbc = 1;
 
@@ -1135,7 +1138,12 @@ static int hw_init(struct msm_gpu *gpu)
 	}
 
 	/* Clear GBIF halt in case GX domain was not collapsed */
-	if (a6xx_has_gbif(adreno_gpu)) {
+	if (adreno_is_a619_holi(adreno_gpu)) {
+		gpu_write(gpu, REG_A6XX_GBIF_HALT, 0);
+		gpu_write(gpu, REG_A6XX_RBBM_GPR0_CNTL, 0);
+		/* Let's make extra sure that the GPU can access the memory.. */
+		mb();
+	} else if (a6xx_has_gbif(adreno_gpu)) {
 		gpu_write(gpu, REG_A6XX_GBIF_HALT, 0);
 		gpu_write(gpu, REG_A6XX_RBBM_GBIF_HALT, 0);
 		/* Let's make extra sure that the GPU can access the memory.. */
@@ -1144,6 +1152,9 @@ static int hw_init(struct msm_gpu *gpu)
 
 	gpu_write(gpu, REG_A6XX_RBBM_SECVID_TSB_CNTL, 0);
 
+	if (adreno_is_a619_holi(adreno_gpu))
+		a6xx_sptprac_enable(gmu);
+
 	/*
 	 * Disable the trusted memory range - we don't actually supported secure
 	 * memory rendering at this point in time and we don't want to block off
@@ -1760,12 +1771,18 @@ static void a6xx_llc_slices_init(struct platform_device *pdev,
 #define GBIF_CLIENT_HALT_MASK		BIT(0)
 #define GBIF_ARB_HALT_MASK		BIT(1)
 #define VBIF_XIN_HALT_CTRL0_MASK	GENMASK(3, 0)
+#define VBIF_RESET_ACK_MASK		0xF0
+#define GPR0_GBIF_HALT_REQUEST		0x1E0
 
 void a6xx_bus_clear_pending_transactions(struct adreno_gpu *adreno_gpu, bool gx_off)
 {
 	struct msm_gpu *gpu = &adreno_gpu->base;
 
-	if (!a6xx_has_gbif(adreno_gpu)) {
+	if (adreno_is_a619_holi(adreno_gpu)) {
+		gpu_write(gpu, REG_A6XX_RBBM_GPR0_CNTL, GPR0_GBIF_HALT_REQUEST);
+		spin_until((gpu_read(gpu, REG_A6XX_RBBM_VBIF_GX_RESET_STATUS) &
+				(VBIF_RESET_ACK_MASK)) == VBIF_RESET_ACK_MASK);
+	} else if (!a6xx_has_gbif(adreno_gpu)) {
 		gpu_write(gpu, REG_A6XX_VBIF_XIN_HALT_CTRL0, VBIF_XIN_HALT_CTRL0_MASK);
 		spin_until((gpu_read(gpu, REG_A6XX_VBIF_XIN_HALT_CTRL1) &
 				(VBIF_XIN_HALT_CTRL0_MASK)) == VBIF_XIN_HALT_CTRL0_MASK);
@@ -1861,6 +1878,9 @@ static int a6xx_pm_resume(struct msm_gpu *gpu)
 	if (ret)
 		goto err_bulk_clk;
 
+	if (adreno_is_a619_holi(adreno_gpu))
+		a6xx_sptprac_enable(gmu);
+
 	/* If anything goes south, tear the GPU down piece by piece.. */
 	if (ret) {
 err_bulk_clk:
@@ -1920,6 +1940,9 @@ static int a6xx_pm_suspend(struct msm_gpu *gpu)
 	/* Drain the outstanding traffic on memory buses */
 	a6xx_bus_clear_pending_transactions(adreno_gpu, true);
 
+	if (adreno_is_a619_holi(adreno_gpu))
+		a6xx_sptprac_disable(gmu);
+
 	clk_bulk_disable_unprepare(gpu->nr_clocks, gpu->grp_clks);
 
 	pm_runtime_put_sync(gmu->gxpd);
diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.h b/drivers/gpu/drm/msm/adreno/adreno_gpu.h
index de0b03a4b594..efd35b7bc4cf 100644
--- a/drivers/gpu/drm/msm/adreno/adreno_gpu.h
+++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.h
@@ -263,6 +263,11 @@ static inline int adreno_is_a619(const struct adreno_gpu *gpu)
 	return adreno_is_revn(gpu, 619);
 }
 
+static inline int adreno_is_a619_holi(const struct adreno_gpu *gpu)
+{
+	return adreno_is_a619(gpu) && adreno_has_gmu_wrapper(gpu);
+}
+
 static inline int adreno_is_a630(const struct adreno_gpu *gpu)
 {
 	return adreno_is_revn(gpu, 630);

-- 
2.41.0

[PATCH v9 15/20] drm/msm/a6xx: Add A610 support

[Konrad Dybcio]

A610 is one of (if not the) lowest-tier SKUs in the A6XX family. It
features no GMU, as it's implemented solely on SoCs with SMD_RPM.
What's more interesting is that it does not feature a VDDGX line
either, being powered solely by VDDCX and has an unfortunate hardware
quirk that makes its reset line broken - after a couple of assert/
deassert cycles, it will hang for good and will not wake up again.

This GPU requires mesa changes for proper rendering, and lots of them
at that. The command streams are quite far away from any other A6XX
GPU and hence it needs special care. This patch was validated both
by running an (incomplete) downstream mesa with some hacks (frames
rendered correctly, though some instructions made the GPU hangcheck
which is expected - garbage in, garbage out) and by replaying RD
traces captured with the downstream KGSL driver - no crashes there,
ever.

Add support for this GPU on the kernel side, which comes down to
pretty simply adding A612 HWCG tables, altering a few values and
adding a special case for handling the reset line.

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
---
 drivers/gpu/drm/msm/adreno/a6xx_gpu.c      | 99 ++++++++++++++++++++++++++----
 drivers/gpu/drm/msm/adreno/adreno_device.c | 12 ++++
 drivers/gpu/drm/msm/adreno/adreno_gpu.h    |  8 ++-
 3 files changed, 107 insertions(+), 12 deletions(-)

diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
index 2ca9e0440396..47aafc9deaf8 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
@@ -252,6 +252,56 @@ static void a6xx_submit(struct msm_gpu *gpu, struct msm_gem_submit *submit)
 	a6xx_flush(gpu, ring);
 }
 
+const struct adreno_reglist a612_hwcg[] = {
+	{REG_A6XX_RBBM_CLOCK_CNTL_SP0, 0x22222222},
+	{REG_A6XX_RBBM_CLOCK_CNTL2_SP0, 0x02222220},
+	{REG_A6XX_RBBM_CLOCK_DELAY_SP0, 0x00000081},
+	{REG_A6XX_RBBM_CLOCK_HYST_SP0, 0x0000f3cf},
+	{REG_A6XX_RBBM_CLOCK_CNTL_TP0, 0x22222222},
+	{REG_A6XX_RBBM_CLOCK_CNTL2_TP0, 0x22222222},
+	{REG_A6XX_RBBM_CLOCK_CNTL3_TP0, 0x22222222},
+	{REG_A6XX_RBBM_CLOCK_CNTL4_TP0, 0x00022222},
+	{REG_A6XX_RBBM_CLOCK_DELAY_TP0, 0x11111111},
+	{REG_A6XX_RBBM_CLOCK_DELAY2_TP0, 0x11111111},
+	{REG_A6XX_RBBM_CLOCK_DELAY3_TP0, 0x11111111},
+	{REG_A6XX_RBBM_CLOCK_DELAY4_TP0, 0x00011111},
+	{REG_A6XX_RBBM_CLOCK_HYST_TP0, 0x77777777},
+	{REG_A6XX_RBBM_CLOCK_HYST2_TP0, 0x77777777},
+	{REG_A6XX_RBBM_CLOCK_HYST3_TP0, 0x77777777},
+	{REG_A6XX_RBBM_CLOCK_HYST4_TP0, 0x00077777},
+	{REG_A6XX_RBBM_CLOCK_CNTL_RB0, 0x22222222},
+	{REG_A6XX_RBBM_CLOCK_CNTL2_RB0, 0x01202222},
+	{REG_A6XX_RBBM_CLOCK_CNTL_CCU0, 0x00002220},
+	{REG_A6XX_RBBM_CLOCK_HYST_RB_CCU0, 0x00040f00},
+	{REG_A6XX_RBBM_CLOCK_CNTL_RAC, 0x05522022},
+	{REG_A6XX_RBBM_CLOCK_CNTL2_RAC, 0x00005555},
+	{REG_A6XX_RBBM_CLOCK_DELAY_RAC, 0x00000011},
+	{REG_A6XX_RBBM_CLOCK_HYST_RAC, 0x00445044},
+	{REG_A6XX_RBBM_CLOCK_CNTL_TSE_RAS_RBBM, 0x04222222},
+	{REG_A6XX_RBBM_CLOCK_MODE_VFD, 0x00002222},
+	{REG_A6XX_RBBM_CLOCK_MODE_GPC, 0x02222222},
+	{REG_A6XX_RBBM_CLOCK_DELAY_HLSQ_2, 0x00000002},
+	{REG_A6XX_RBBM_CLOCK_MODE_HLSQ, 0x00002222},
+	{REG_A6XX_RBBM_CLOCK_DELAY_TSE_RAS_RBBM, 0x00004000},
+	{REG_A6XX_RBBM_CLOCK_DELAY_VFD, 0x00002222},
+	{REG_A6XX_RBBM_CLOCK_DELAY_GPC, 0x00000200},
+	{REG_A6XX_RBBM_CLOCK_DELAY_HLSQ, 0x00000000},
+	{REG_A6XX_RBBM_CLOCK_HYST_TSE_RAS_RBBM, 0x00000000},
+	{REG_A6XX_RBBM_CLOCK_HYST_VFD, 0x00000000},
+	{REG_A6XX_RBBM_CLOCK_HYST_GPC, 0x04104004},
+	{REG_A6XX_RBBM_CLOCK_HYST_HLSQ, 0x00000000},
+	{REG_A6XX_RBBM_CLOCK_CNTL_UCHE, 0x22222222},
+	{REG_A6XX_RBBM_CLOCK_HYST_UCHE, 0x00000004},
+	{REG_A6XX_RBBM_CLOCK_DELAY_UCHE, 0x00000002},
+	{REG_A6XX_RBBM_ISDB_CNT, 0x00000182},
+	{REG_A6XX_RBBM_RAC_THRESHOLD_CNT, 0x00000000},
+	{REG_A6XX_RBBM_SP_HYST_CNT, 0x00000000},
+	{REG_A6XX_RBBM_CLOCK_CNTL_GMU_GX, 0x00000222},
+	{REG_A6XX_RBBM_CLOCK_DELAY_GMU_GX, 0x00000111},
+	{REG_A6XX_RBBM_CLOCK_HYST_GMU_GX, 0x00000555},
+	{},
+};
+
 /* For a615 family (a615, a616, a618 and a619) */
 const struct adreno_reglist a615_hwcg[] = {
 	{REG_A6XX_RBBM_CLOCK_CNTL_SP0,  0x02222222},
@@ -659,6 +709,8 @@ static void a6xx_set_hwcg(struct msm_gpu *gpu, bool state)
 
 	if (adreno_is_a630(adreno_gpu))
 		clock_cntl_on = 0x8aa8aa02;
+	else if (adreno_is_a610(adreno_gpu))
+		clock_cntl_on = 0xaaa8aa82;
 	else
 		clock_cntl_on = 0x8aa8aa82;
 
@@ -669,13 +721,15 @@ static void a6xx_set_hwcg(struct msm_gpu *gpu, bool state)
 		return;
 
 	/* Disable SP clock before programming HWCG registers */
-	gmu_rmw(gmu, REG_A6XX_GPU_GMU_GX_SPTPRAC_CLOCK_CONTROL, 1, 0);
+	if (!adreno_is_a610(adreno_gpu))
+		gmu_rmw(gmu, REG_A6XX_GPU_GMU_GX_SPTPRAC_CLOCK_CONTROL, 1, 0);
 
 	for (i = 0; (reg = &adreno_gpu->info->hwcg[i], reg->offset); i++)
 		gpu_write(gpu, reg->offset, state ? reg->value : 0);
 
 	/* Enable SP clock */
-	gmu_rmw(gmu, REG_A6XX_GPU_GMU_GX_SPTPRAC_CLOCK_CONTROL, 0, 1);
+	if (!adreno_is_a610(adreno_gpu))
+		gmu_rmw(gmu, REG_A6XX_GPU_GMU_GX_SPTPRAC_CLOCK_CONTROL, 0, 1);
 
 	gpu_write(gpu, REG_A6XX_RBBM_CLOCK_CNTL, state ? clock_cntl_on : 0);
 }
@@ -907,6 +961,13 @@ static void a6xx_set_ubwc_config(struct msm_gpu *gpu)
 	/* Unknown, introduced with A640/680 */
 	u32 amsbc = 0;
 
+	if (adreno_is_a610(adreno_gpu)) {
+		/* HBB = 14 */
+		hbb_lo = 1;
+		min_acc_len = 1;
+		ubwc_mode = 1;
+	}
+
 	/* a618 is using the hw default values */
 	if (adreno_is_a618(adreno_gpu))
 		return;
@@ -1181,13 +1242,13 @@ static int hw_init(struct msm_gpu *gpu)
 	a6xx_set_hwcg(gpu, true);
 
 	/* VBIF/GBIF start*/
-	if (adreno_is_a640_family(adreno_gpu) ||
+	if (adreno_is_a610(adreno_gpu) ||
+	    adreno_is_a640_family(adreno_gpu) ||
 	    adreno_is_a650_family(adreno_gpu)) {
 		gpu_write(gpu, REG_A6XX_GBIF_QSB_SIDE0, 0x00071620);
 		gpu_write(gpu, REG_A6XX_GBIF_QSB_SIDE1, 0x00071620);
 		gpu_write(gpu, REG_A6XX_GBIF_QSB_SIDE2, 0x00071620);
 		gpu_write(gpu, REG_A6XX_GBIF_QSB_SIDE3, 0x00071620);
-		gpu_write(gpu, REG_A6XX_GBIF_QSB_SIDE3, 0x00071620);
 		gpu_write(gpu, REG_A6XX_RBBM_GBIF_CLIENT_QOS_CNTL, 0x3);
 	} else {
 		gpu_write(gpu, REG_A6XX_RBBM_VBIF_CLIENT_QOS_CNTL, 0x3);
@@ -1215,18 +1276,26 @@ static int hw_init(struct msm_gpu *gpu)
 	gpu_write(gpu, REG_A6XX_UCHE_FILTER_CNTL, 0x804);
 	gpu_write(gpu, REG_A6XX_UCHE_CACHE_WAYS, 0x4);
 
-	if (adreno_is_a640_family(adreno_gpu) ||
-	    adreno_is_a650_family(adreno_gpu))
+	if (adreno_is_a640_family(adreno_gpu) || adreno_is_a650_family(adreno_gpu)) {
 		gpu_write(gpu, REG_A6XX_CP_ROQ_THRESHOLDS_2, 0x02000140);
-	else
+		gpu_write(gpu, REG_A6XX_CP_ROQ_THRESHOLDS_1, 0x8040362c);
+	} else if (adreno_is_a610(adreno_gpu)) {
+		gpu_write(gpu, REG_A6XX_CP_ROQ_THRESHOLDS_2, 0x00800060);
+		gpu_write(gpu, REG_A6XX_CP_ROQ_THRESHOLDS_1, 0x40201b16);
+	} else {
 		gpu_write(gpu, REG_A6XX_CP_ROQ_THRESHOLDS_2, 0x010000c0);
-	gpu_write(gpu, REG_A6XX_CP_ROQ_THRESHOLDS_1, 0x8040362c);
+		gpu_write(gpu, REG_A6XX_CP_ROQ_THRESHOLDS_1, 0x8040362c);
+	}
 
 	if (adreno_is_a660_family(adreno_gpu))
 		gpu_write(gpu, REG_A6XX_CP_LPAC_PROG_FIFO_SIZE, 0x00000020);
 
 	/* Setting the mem pool size */
-	gpu_write(gpu, REG_A6XX_CP_MEM_POOL_SIZE, 128);
+	if (adreno_is_a610(adreno_gpu)) {
+		gpu_write(gpu, REG_A6XX_CP_MEM_POOL_SIZE, 48);
+		gpu_write(gpu, REG_A6XX_CP_MEM_POOL_DBG_ADDR, 47);
+	} else
+		gpu_write(gpu, REG_A6XX_CP_MEM_POOL_SIZE, 128);
 
 	/* Setting the primFifo thresholds default values,
 	 * and vccCacheSkipDis=1 bit (0x200) for A640 and newer
@@ -1237,6 +1306,8 @@ static int hw_init(struct msm_gpu *gpu)
 		gpu_write(gpu, REG_A6XX_PC_DBG_ECO_CNTL, 0x00200200);
 	else if (adreno_is_a650(adreno_gpu) || adreno_is_a660(adreno_gpu))
 		gpu_write(gpu, REG_A6XX_PC_DBG_ECO_CNTL, 0x00300200);
+	else if (adreno_is_a610(adreno_gpu))
+		gpu_write(gpu, REG_A6XX_PC_DBG_ECO_CNTL, 0x00080000);
 	else
 		gpu_write(gpu, REG_A6XX_PC_DBG_ECO_CNTL, 0x00180000);
 
@@ -1252,8 +1323,10 @@ static int hw_init(struct msm_gpu *gpu)
 	a6xx_set_ubwc_config(gpu);
 
 	/* Enable fault detection */
-	gpu_write(gpu, REG_A6XX_RBBM_INTERFACE_HANG_INT_CNTL,
-		(1 << 30) | 0x1fffff);
+	if (adreno_is_a610(adreno_gpu))
+		gpu_write(gpu, REG_A6XX_RBBM_INTERFACE_HANG_INT_CNTL, (1 << 30) | 0x3ffff);
+	else
+		gpu_write(gpu, REG_A6XX_RBBM_INTERFACE_HANG_INT_CNTL, (1 << 30) | 0x1fffff);
 
 	gpu_write(gpu, REG_A6XX_UCHE_CLIENT_PF, 1);
 
@@ -1813,6 +1886,10 @@ void a6xx_bus_clear_pending_transactions(struct adreno_gpu *adreno_gpu, bool gx_
 
 void a6xx_gpu_sw_reset(struct msm_gpu *gpu, bool assert)
 {
+	/* 11nm chips (e.g. ones with A610) have hw issues with the reset line! */
+	if (adreno_is_a610(to_adreno_gpu(gpu)))
+		return;
+
 	gpu_write(gpu, REG_A6XX_RBBM_SW_RESET_CMD, assert);
 	/* Perform a bogus read and add a brief delay to ensure ordering. */
 	gpu_read(gpu, REG_A6XX_RBBM_SW_RESET_CMD);
diff --git a/drivers/gpu/drm/msm/adreno/adreno_device.c b/drivers/gpu/drm/msm/adreno/adreno_device.c
index 6ea24b8ddcf8..cb94cfd137a8 100644
--- a/drivers/gpu/drm/msm/adreno/adreno_device.c
+++ b/drivers/gpu/drm/msm/adreno/adreno_device.c
@@ -253,6 +253,18 @@ static const struct adreno_info gpulist[] = {
 		.quirks = ADRENO_QUIRK_LMLOADKILL_DISABLE,
 		.init = a5xx_gpu_init,
 		.zapfw = "a540_zap.mdt",
+	}, {
+		.rev = ADRENO_REV(6, 1, 0, ANY_ID),
+		.revn = 610,
+		.name = "A610",
+		.fw = {
+			[ADRENO_FW_SQE] = "a630_sqe.fw",
+		},
+		.gmem = (SZ_128K + SZ_4K),
+		.inactive_period = DRM_MSM_INACTIVE_PERIOD,
+		.init = a6xx_gpu_init,
+		.zapfw = "a610_zap.mdt",
+		.hwcg = a612_hwcg,
 	}, {
 		.rev = ADRENO_REV(6, 1, 8, ANY_ID),
 		.revn = 618,
diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.h b/drivers/gpu/drm/msm/adreno/adreno_gpu.h
index efd35b7bc4cf..3a8af5fdaea8 100644
--- a/drivers/gpu/drm/msm/adreno/adreno_gpu.h
+++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.h
@@ -55,7 +55,8 @@ struct adreno_reglist {
 	u32 value;
 };
 
-extern const struct adreno_reglist a615_hwcg[], a630_hwcg[], a640_hwcg[], a650_hwcg[], a660_hwcg[], a690_hwcg[];
+extern const struct adreno_reglist a612_hwcg[], a615_hwcg[], a630_hwcg[], a640_hwcg[], a650_hwcg[];
+extern const struct adreno_reglist a660_hwcg[], a690_hwcg[];
 
 struct adreno_info {
 	struct adreno_rev rev;
@@ -253,6 +254,11 @@ static inline int adreno_is_a540(const struct adreno_gpu *gpu)
 	return adreno_is_revn(gpu, 540);
 }
 
+static inline int adreno_is_a610(const struct adreno_gpu *gpu)
+{
+	return adreno_is_revn(gpu, 610);
+}
+
 static inline int adreno_is_a618(const struct adreno_gpu *gpu)
 {
 	return adreno_is_revn(gpu, 618);

-- 
2.41.0

[PATCH v9 16/20] drm/msm/a6xx: Fix some A619 tunables

[Konrad Dybcio]

Adreno 619 expects some tunables to be set differently. Make up for it.

Fixes: b7616b5c69e6 ("drm/msm/adreno: Add A619 support")
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Akhil P Oommen <quic_akhilpo@quicinc.com>
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
---
 drivers/gpu/drm/msm/adreno/a6xx_gpu.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
index 47aafc9deaf8..97e261d33312 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
@@ -1306,6 +1306,8 @@ static int hw_init(struct msm_gpu *gpu)
 		gpu_write(gpu, REG_A6XX_PC_DBG_ECO_CNTL, 0x00200200);
 	else if (adreno_is_a650(adreno_gpu) || adreno_is_a660(adreno_gpu))
 		gpu_write(gpu, REG_A6XX_PC_DBG_ECO_CNTL, 0x00300200);
+	else if (adreno_is_a619(adreno_gpu))
+		gpu_write(gpu, REG_A6XX_PC_DBG_ECO_CNTL, 0x00018000);
 	else if (adreno_is_a610(adreno_gpu))
 		gpu_write(gpu, REG_A6XX_PC_DBG_ECO_CNTL, 0x00080000);
 	else
@@ -1323,7 +1325,9 @@ static int hw_init(struct msm_gpu *gpu)
 	a6xx_set_ubwc_config(gpu);
 
 	/* Enable fault detection */
-	if (adreno_is_a610(adreno_gpu))
+	if (adreno_is_a619(adreno_gpu))
+		gpu_write(gpu, REG_A6XX_RBBM_INTERFACE_HANG_INT_CNTL, (1 << 30) | 0x3fffff);
+	else if (adreno_is_a610(adreno_gpu))
 		gpu_write(gpu, REG_A6XX_RBBM_INTERFACE_HANG_INT_CNTL, (1 << 30) | 0x3ffff);
 	else
 		gpu_write(gpu, REG_A6XX_RBBM_INTERFACE_HANG_INT_CNTL, (1 << 30) | 0x1fffff);

-- 
2.41.0

[PATCH v9 17/20] drm/msm/a6xx: Use "else if" in GPU speedbin rev matching

[Konrad Dybcio]

The GPU can only be one at a time. Turn a series of ifs into if +
elseifs to save some CPU cycles.

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Akhil P Oommen <quic_akhilpo@quicinc.com>
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
---
 drivers/gpu/drm/msm/adreno/a6xx_gpu.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
index 97e261d33312..d0ba0844079c 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
@@ -2276,16 +2276,16 @@ static u32 fuse_to_supp_hw(struct device *dev, struct adreno_rev rev, u32 fuse)
 	if (adreno_cmp_rev(ADRENO_REV(6, 1, 8, ANY_ID), rev))
 		val = a618_get_speed_bin(fuse);
 
-	if (adreno_cmp_rev(ADRENO_REV(6, 1, 9, ANY_ID), rev))
+	else if (adreno_cmp_rev(ADRENO_REV(6, 1, 9, ANY_ID), rev))
 		val = a619_get_speed_bin(fuse);
 
-	if (adreno_cmp_rev(ADRENO_REV(6, 3, 5, ANY_ID), rev))
+	else if (adreno_cmp_rev(ADRENO_REV(6, 3, 5, ANY_ID), rev))
 		val = adreno_7c3_get_speed_bin(fuse);
 
-	if (adreno_cmp_rev(ADRENO_REV(6, 4, 0, ANY_ID), rev))
+	else if (adreno_cmp_rev(ADRENO_REV(6, 4, 0, ANY_ID), rev))
 		val = a640_get_speed_bin(fuse);
 
-	if (adreno_cmp_rev(ADRENO_REV(6, 5, 0, ANY_ID), rev))
+	else if (adreno_cmp_rev(ADRENO_REV(6, 5, 0, ANY_ID), rev))
 		val = a650_get_speed_bin(fuse);
 
 	if (val == UINT_MAX) {

-- 
2.41.0

[PATCH v9 18/20] drm/msm/a6xx: Use adreno_is_aXYZ macros in speedbin matching

[Konrad Dybcio]

Before transitioning to using per-SoC and not per-Adreno speedbin
fuse values (need another patchset to land elsewhere), a good
improvement/stopgap solution is to use adreno_is_aXYZ macros in
place of explicit revision matching. Do so to allow differentiating
between A619 and A619_holi.

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Akhil P Oommen <quic_akhilpo@quicinc.com>
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
---
 drivers/gpu/drm/msm/adreno/a6xx_gpu.c   | 18 +++++++++---------
 drivers/gpu/drm/msm/adreno/adreno_gpu.h | 15 ++++++++++++---
 2 files changed, 21 insertions(+), 12 deletions(-)

diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
index d0ba0844079c..d7139eae0f73 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
@@ -2269,23 +2269,23 @@ static u32 adreno_7c3_get_speed_bin(u32 fuse)
 	return UINT_MAX;
 }
 
-static u32 fuse_to_supp_hw(struct device *dev, struct adreno_rev rev, u32 fuse)
+static u32 fuse_to_supp_hw(struct device *dev, struct adreno_gpu *adreno_gpu, u32 fuse)
 {
 	u32 val = UINT_MAX;
 
-	if (adreno_cmp_rev(ADRENO_REV(6, 1, 8, ANY_ID), rev))
+	if (adreno_is_a618(adreno_gpu))
 		val = a618_get_speed_bin(fuse);
 
-	else if (adreno_cmp_rev(ADRENO_REV(6, 1, 9, ANY_ID), rev))
+	else if (adreno_is_a619(adreno_gpu))
 		val = a619_get_speed_bin(fuse);
 
-	else if (adreno_cmp_rev(ADRENO_REV(6, 3, 5, ANY_ID), rev))
+	else if (adreno_is_7c3(adreno_gpu))
 		val = adreno_7c3_get_speed_bin(fuse);
 
-	else if (adreno_cmp_rev(ADRENO_REV(6, 4, 0, ANY_ID), rev))
+	else if (adreno_is_a640(adreno_gpu))
 		val = a640_get_speed_bin(fuse);
 
-	else if (adreno_cmp_rev(ADRENO_REV(6, 5, 0, ANY_ID), rev))
+	else if (adreno_is_a650(adreno_gpu))
 		val = a650_get_speed_bin(fuse);
 
 	if (val == UINT_MAX) {
@@ -2298,7 +2298,7 @@ static u32 fuse_to_supp_hw(struct device *dev, struct adreno_rev rev, u32 fuse)
 	return (1 << val);
 }
 
-static int a6xx_set_supported_hw(struct device *dev, struct adreno_rev rev)
+static int a6xx_set_supported_hw(struct device *dev, struct adreno_gpu *adreno_gpu)
 {
 	u32 supp_hw;
 	u32 speedbin;
@@ -2317,7 +2317,7 @@ static int a6xx_set_supported_hw(struct device *dev, struct adreno_rev rev)
 		return ret;
 	}
 
-	supp_hw = fuse_to_supp_hw(dev, rev, speedbin);
+	supp_hw = fuse_to_supp_hw(dev, adreno_gpu, speedbin);
 
 	ret = devm_pm_opp_set_supported_hw(dev, &supp_hw, 1);
 	if (ret)
@@ -2438,7 +2438,7 @@ struct msm_gpu *a6xx_gpu_init(struct drm_device *dev)
 
 	a6xx_llc_slices_init(pdev, a6xx_gpu);
 
-	ret = a6xx_set_supported_hw(&pdev->dev, config->rev);
+	ret = a6xx_set_supported_hw(&pdev->dev, adreno_gpu);
 	if (ret) {
 		a6xx_destroy(&(a6xx_gpu->base.base));
 		return ERR_PTR(ret);
diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.h b/drivers/gpu/drm/msm/adreno/adreno_gpu.h
index 3a8af5fdaea8..d8c9e8cc3753 100644
--- a/drivers/gpu/drm/msm/adreno/adreno_gpu.h
+++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.h
@@ -279,10 +279,9 @@ static inline int adreno_is_a630(const struct adreno_gpu *gpu)
 	return adreno_is_revn(gpu, 630);
 }
 
-static inline int adreno_is_a640_family(const struct adreno_gpu *gpu)
+static inline int adreno_is_a640(const struct adreno_gpu *gpu)
 {
-	return adreno_is_revn(gpu, 640) ||
-		adreno_is_revn(gpu, 680);
+	return adreno_is_revn(gpu, 640);
 }
 
 static inline int adreno_is_a650(const struct adreno_gpu *gpu)
@@ -301,6 +300,11 @@ static inline int adreno_is_a660(const struct adreno_gpu *gpu)
 	return adreno_is_revn(gpu, 660);
 }
 
+static inline int adreno_is_a680(const struct adreno_gpu *gpu)
+{
+	return adreno_is_revn(gpu, 680);
+}
+
 static inline int adreno_is_a690(const struct adreno_gpu *gpu)
 {
 	return adreno_is_revn(gpu, 690);
@@ -328,6 +332,11 @@ static inline int adreno_is_a650_family(const struct adreno_gpu *gpu)
 		adreno_is_a660_family(gpu);
 }
 
+static inline int adreno_is_a640_family(const struct adreno_gpu *gpu)
+{
+	return adreno_is_a640(gpu) || adreno_is_a680(gpu);
+}
+
 u64 adreno_private_address_space_size(struct msm_gpu *gpu);
 int adreno_get_param(struct msm_gpu *gpu, struct msm_file_private *ctx,
 		     uint32_t param, uint64_t *value, uint32_t *len);

-- 
2.41.0

[PATCH v9 19/20] drm/msm/a6xx: Add A619_holi speedbin support

[Konrad Dybcio]

A619_holi is implemented on at least two SoCs: SM4350 (holi) and SM6375
(blair). This is what seems to be a first occurrence of this happening,
but it's easy to overcome by guarding the SoC-specific fuse values with
of_machine_is_compatible(). Do just that to enable frequency limiting
on these SoCs.

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Akhil P Oommen <quic_akhilpo@quicinc.com>
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
---
 drivers/gpu/drm/msm/adreno/a6xx_gpu.c | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)

diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
index d7139eae0f73..ff9a8d342c77 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
@@ -2216,6 +2216,34 @@ static u32 a618_get_speed_bin(u32 fuse)
 	return UINT_MAX;
 }
 
+static u32 a619_holi_get_speed_bin(u32 fuse)
+{
+	/*
+	 * There are (at least) two SoCs implementing A619_holi: SM4350 (holi)
+	 * and SM6375 (blair). Limit the fuse matching to the corresponding
+	 * SoC to prevent bogus frequency setting (as improbable as it may be,
+	 * given unexpected fuse values are.. unexpected! But still possible.)
+	 */
+
+	if (fuse == 0)
+		return 0;
+
+	if (of_machine_is_compatible("qcom,sm4350")) {
+		if (fuse == 138)
+			return 1;
+		else if (fuse == 92)
+			return 2;
+	} else if (of_machine_is_compatible("qcom,sm6375")) {
+		if (fuse == 190)
+			return 1;
+		else if (fuse == 177)
+			return 2;
+	} else
+		pr_warn("Unknown SoC implementing A619_holi!\n");
+
+	return UINT_MAX;
+}
+
 static u32 a619_get_speed_bin(u32 fuse)
 {
 	if (fuse == 0)
@@ -2276,6 +2304,9 @@ static u32 fuse_to_supp_hw(struct device *dev, struct adreno_gpu *adreno_gpu, u3
 	if (adreno_is_a618(adreno_gpu))
 		val = a618_get_speed_bin(fuse);
 
+	else if (adreno_is_a619_holi(adreno_gpu))
+		val = a619_holi_get_speed_bin(fuse);
+
 	else if (adreno_is_a619(adreno_gpu))
 		val = a619_get_speed_bin(fuse);
 

-- 
2.41.0

[PATCH v9 20/20] drm/msm/a6xx: Add A610 speedbin support

[Konrad Dybcio]

A610 is implemented on at least three SoCs: SM6115 (bengal), SM6125
(trinket) and SM6225 (khaje). Trinket does not support speed binning
(only a single SKU exists) and we don't yet support khaje upstream.
Hence, add a fuse mapping table for bengal to allow for per-chip
frequency limiting.

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Akhil P Oommen <quic_akhilpo@quicinc.com>
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
---
 drivers/gpu/drm/msm/adreno/a6xx_gpu.c | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
index ff9a8d342c77..b3ada1e7b598 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
@@ -2204,6 +2204,30 @@ static bool a6xx_progress(struct msm_gpu *gpu, struct msm_ringbuffer *ring)
 	return progress;
 }
 
+static u32 a610_get_speed_bin(u32 fuse)
+{
+	/*
+	 * There are (at least) three SoCs implementing A610: SM6125 (trinket),
+	 * SM6115 (bengal) and SM6225 (khaje). Trinket does not have speedbinning,
+	 * as only a single SKU exists and we don't support khaje upstream yet.
+	 * Hence, this matching table is only valid for bengal and can be easily
+	 * expanded if need be.
+	 */
+
+	if (fuse == 0)
+		return 0;
+	else if (fuse == 206)
+		return 1;
+	else if (fuse == 200)
+		return 2;
+	else if (fuse == 157)
+		return 3;
+	else if (fuse == 127)
+		return 4;
+
+	return UINT_MAX;
+}
+
 static u32 a618_get_speed_bin(u32 fuse)
 {
 	if (fuse == 0)
@@ -2301,6 +2325,9 @@ static u32 fuse_to_supp_hw(struct device *dev, struct adreno_gpu *adreno_gpu, u3
 {
 	u32 val = UINT_MAX;
 
+	if (adreno_is_a610(adreno_gpu))
+		val = a610_get_speed_bin(fuse);
+
 	if (adreno_is_a618(adreno_gpu))
 		val = a618_get_speed_bin(fuse);
 

-- 
2.41.0