[PATCH v2 07/13] drm/msm/adreno: Move speedbin mapping to device table

Rob Clark
2023-07-27T21:23:31Z

This simplifies the code.

v2: Use a table of structs instead of flat uint32_t[]

Signed-off-by: Rob Clark <robdclark@chromium.org>
---
drivers/gpu/drm/msm/adreno/a6xx_gpu.c | 171 ++-------------------
drivers/gpu/drm/msm/adreno/adreno_device.c | 51 ++++++
drivers/gpu/drm/msm/adreno/adreno_gpu.h | 30 ++++
3 files changed, 97 insertions(+), 155 deletions(-)

diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
index 6f8c4381fa4a..a81a6459c656 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
@@ -2204,159 +2204,19 @@ static bool a6xx_progress(struct msm_gpu *gpu, struct msm_ringbuffer *ring)
return progress;
}

-static u32 a610_get_speed_bin(u32 fuse)
+static u32 fuse_to_supp_hw(const struct adreno_info *info, 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)
- return 0;
- else if (fuse == 169)
- return 1;
- else if (fuse == 174)
- return 2;
-
- 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)
- return 0;
- else if (fuse == 120)
- return 4;
- else if (fuse == 138)
- return 3;
- else if (fuse == 169)
- return 2;
- else if (fuse == 180)
- return 1;
-
- return UINT_MAX;
-}
-
-static u32 a640_get_speed_bin(u32 fuse)
-{
- if (fuse == 0)
- return 0;
- else if (fuse == 1)
- return 1;
-
- return UINT_MAX;
-}
-
-static u32 a650_get_speed_bin(u32 fuse)
-{
- if (fuse == 0)
- return 0;
- else if (fuse == 1)
- return 1;
- /* Yep, 2 and 3 are swapped! :/ */
- else if (fuse == 2)
- return 3;
- else if (fuse == 3)
- return 2;
-
- return UINT_MAX;
-}
+ if (!info->speedbins)
+ return UINT_MAX;

-static u32 adreno_7c3_get_speed_bin(u32 fuse)
-{
- if (fuse == 0)
- return 0;
- else if (fuse == 117)
- return 0;
- else if (fuse == 190)
- return 1;
+ for (int i = 0; info->speedbins[i].fuse != SHRT_MAX; i++)
+ if (info->speedbins[i].fuse == fuse)
+ return BIT(info->speedbins[i].speedbin);

return UINT_MAX;
}

-static u32 fuse_to_supp_hw(struct device *dev, struct adreno_gpu *adreno_gpu, u32 fuse)
-{
- 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);
-
- 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);
-
- else if (adreno_is_7c3(adreno_gpu))
- val = adreno_7c3_get_speed_bin(fuse);
-
- else if (adreno_is_a640(adreno_gpu))
- val = a640_get_speed_bin(fuse);
-
- else if (adreno_is_a650(adreno_gpu))
- val = a650_get_speed_bin(fuse);
-
- if (val == UINT_MAX) {
- DRM_DEV_ERROR(dev,
- "missing support for speed-bin: %u. Some OPPs may not be supported by hardware\n",
- fuse);
- return UINT_MAX;
- }
-
- return (1 << val);
-}
-
-static int a6xx_set_supported_hw(struct device *dev, struct adreno_gpu *adreno_gpu)
+static int a6xx_set_supported_hw(struct device *dev, const struct adreno_info *info)
{
u32 supp_hw;
u32 speedbin;
@@ -2375,7 +2235,14 @@ static int a6xx_set_supported_hw(struct device *dev, struct adreno_gpu *adreno_g
return ret;
}

- supp_hw = fuse_to_supp_hw(dev, adreno_gpu, speedbin);
+ supp_hw = fuse_to_supp_hw(info, speedbin);
+
+ if (supp_hw == UINT_MAX) {
+ DRM_DEV_ERROR(dev,
+ "missing support for speed-bin: %u. Some OPPs may not be supported by hardware\n",
+ speedbin);
+ return UINT_MAX;
+ }

ret = devm_pm_opp_set_supported_hw(dev, &supp_hw, 1);
if (ret)
@@ -2483,17 +2350,11 @@ struct msm_gpu *a6xx_gpu_init(struct drm_device *dev)
if (!info)
return ERR_PTR(-EINVAL);

- /* Assign these early so that we can use the is_aXYZ helpers */
- /* New-style ADRENO_REV()-only */
- adreno_gpu->rev = info->rev;
- /* Quirk data */
- adreno_gpu->info = info;
-
adreno_gpu->base.hw_apriv = !!(info->quirks & ADRENO_QUIRK_HAS_HW_APRIV);

a6xx_llc_slices_init(pdev, a6xx_gpu);

- ret = a6xx_set_supported_hw(&pdev->dev, adreno_gpu);
+ ret = a6xx_set_supported_hw(&pdev->dev, info);
if (ret) {
a6xx_destroy(&(a6xx_gpu->base.base));
return ERR_PTR(ret);
diff --git a/drivers/gpu/drm/msm/adreno/adreno_device.c b/drivers/gpu/drm/msm/adreno/adreno_device.c
index e62bc895a31f..325b25dc8bfd 100644
--- a/drivers/gpu/drm/msm/adreno/adreno_device.c
+++ b/drivers/gpu/drm/msm/adreno/adreno_device.c
@@ -247,6 +247,20 @@ static const struct adreno_info gpulist[] = {
.init = a6xx_gpu_init,
.zapfw = "a610_zap.mdt",
.hwcg = a612_hwcg,
+ /*
+ * 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.
+ */
+ .speedbins = ADRENO_SPEEDBINS(
+ { 0, 0 },
+ { 206, 1 },
+ { 200, 2 },
+ { 157, 3 },
+ { 127, 4 },
+ ),
}, {
.rev = ADRENO_REV(6, 1, 8, ANY_ID),
.revn = 618,
@@ -258,6 +272,11 @@ static const struct adreno_info gpulist[] = {
.inactive_period = DRM_MSM_INACTIVE_PERIOD,
.quirks = ADRENO_QUIRK_HAS_CACHED_COHERENT,
.init = a6xx_gpu_init,
+ .speedbins = ADRENO_SPEEDBINS(
+ { 0, 0 },
+ { 169, 1 },
+ { 174, 2 },
+ ),
}, {
.machine = "qcom,sm4350",
.rev = ADRENO_REV(6, 1, 9, ANY_ID),
@@ -271,6 +290,11 @@ static const struct adreno_info gpulist[] = {
.init = a6xx_gpu_init,
.zapfw = "a615_zap.mdt",
.hwcg = a615_hwcg,
+ .speedbins = ADRENO_SPEEDBINS(
+ { 0, 0 },
+ { 138, 1 },
+ { 92, 2 },
+ ),
}, {
.machine = "qcom,sm6375",
.rev = ADRENO_REV(6, 1, 9, ANY_ID),
@@ -284,6 +308,11 @@ static const struct adreno_info gpulist[] = {
.init = a6xx_gpu_init,
.zapfw = "a615_zap.mdt",
.hwcg = a615_hwcg,
+ .speedbins = ADRENO_SPEEDBINS(
+ { 0, 0 },
+ { 190, 1 },
+ { 177, 2 },
+ ),
}, {
.rev = ADRENO_REV(6, 1, 9, ANY_ID),
.revn = 619,
@@ -297,6 +326,13 @@ static const struct adreno_info gpulist[] = {
.init = a6xx_gpu_init,
.zapfw = "a615_zap.mdt",
.hwcg = a615_hwcg,
+ .speedbins = ADRENO_SPEEDBINS(
+ { 0, 0 },
+ { 120, 4 },
+ { 138, 3 },
+ { 169, 2 },
+ { 180, 1 },
+ ),
}, {
.rev = ADRENO_REV(6, 3, 0, ANY_ID),
.revn = 630,
@@ -323,6 +359,10 @@ static const struct adreno_info gpulist[] = {
.init = a6xx_gpu_init,
.zapfw = "a640_zap.mdt",
.hwcg = a640_hwcg,
+ .speedbins = ADRENO_SPEEDBINS(
+ { 0, 0 },
+ { 1, 1 },
+ ),
}, {
.rev = ADRENO_REV(6, 5, 0, ANY_ID),
.revn = 650,
@@ -338,6 +378,12 @@ static const struct adreno_info gpulist[] = {
.zapfw = "a650_zap.mdt",
.hwcg = a650_hwcg,
.address_space_size = SZ_16G,
+ .speedbins = ADRENO_SPEEDBINS(
+ { 0, 0 },
+ { 1, 1 },
+ { 2, 3 }, /* Yep, 2 and 3 are swapped! :/ */
+ { 3, 2 },
+ ),
}, {
.rev = ADRENO_REV(6, 6, 0, ANY_ID),
.revn = 660,
@@ -366,6 +412,11 @@ static const struct adreno_info gpulist[] = {
.init = a6xx_gpu_init,
.hwcg = a660_hwcg,
.address_space_size = SZ_16G,
+ .speedbins = ADRENO_SPEEDBINS(
+ { 0, 0 },
+ { 117, 0 },
+ { 190, 1 },
+ ),
}, {
.rev = ADRENO_REV(6, 8, 0, ANY_ID),
.revn = 680,
diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.h b/drivers/gpu/drm/msm/adreno/adreno_gpu.h
index d5335b99c64c..aa64bad25a63 100644
--- a/drivers/gpu/drm/msm/adreno/adreno_gpu.h
+++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.h
@@ -60,6 +60,11 @@ struct adreno_reglist {
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_speedbin {
+ uint16_t fuse;
+ uint16_t speedbin;
+};
+
struct adreno_info {
const char *machine;
struct adreno_rev rev;
@@ -72,8 +77,33 @@ struct adreno_info {
u32 inactive_period;
const struct adreno_reglist *hwcg;
u64 address_space_size;
+ /**
+ * @speedbins: Optional table of fuse to speedbin mappings
+ *
+ * Consists of pairs of fuse, index mappings, terminated with
+ * {SHRT_MAX, 0} sentinal.
+ */
+ struct adreno_speedbin *speedbins;
};

+/*
+ * Helper to build a speedbin table, ie. the table:
+ * fuse | speedbin
+ * -----+---------
+ * 0 | 0
+ * 169 | 1
+ * 174 | 2
+ *
+ * would be declared as:
+ *
+ * .speedbins = ADRENO_SPEEDBINS(
+ * { 0, 0 },
+ * { 169, 1 },
+ * { 174, 2 },
+ * ),
+ */
+#define ADRENO_SPEEDBINS(tbl...) (struct adreno_speedbin[]) { tbl {SHRT_MAX, 0} }
+
const struct adreno_info *adreno_info(struct adreno_rev rev);

struct adreno_gpu {
--
2.41.0