On 07/07/2023 00:10, Rob Clark wrote:
From: Rob Clark <robdclark@xxxxxxxxxxxx>
Since the revision becomes an opaque identifier with future GPUs, move
away from treating different ranges of bits as having a given meaning.
This means that we need to explicitly list different patch revisions in
the device table.
Signed-off-by: Rob Clark <robdclark@xxxxxxxxxxxx>
---
drivers/gpu/drm/msm/adreno/a4xx_gpu.c | 2 +-
drivers/gpu/drm/msm/adreno/a5xx_gpu.c | 11 +-
drivers/gpu/drm/msm/adreno/a5xx_power.c | 2 +-
drivers/gpu/drm/msm/adreno/a6xx_gmu.c | 13 ++-
drivers/gpu/drm/msm/adreno/a6xx_gpu.c | 9 +-
drivers/gpu/drm/msm/adreno/adreno_device.c | 128 ++++++++++-----------
drivers/gpu/drm/msm/adreno/adreno_gpu.c | 16 +--
drivers/gpu/drm/msm/adreno/adreno_gpu.h | 51 ++++----
8 files changed, 122 insertions(+), 110 deletions(-)
diff --git a/drivers/gpu/drm/msm/adreno/a4xx_gpu.c b/drivers/gpu/drm/msm/adreno/a4xx_gpu.c
index 715436cb3996..8b4cdf95f445 100644
--- a/drivers/gpu/drm/msm/adreno/a4xx_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/a4xx_gpu.c
@@ -145,7 +145,7 @@ static void a4xx_enable_hwcg(struct msm_gpu *gpu)
gpu_write(gpu, REG_A4XX_RBBM_CLOCK_DELAY_HLSQ, 0x00220000);
/* Early A430's have a timing issue with SP/TP power collapse;
disabling HW clock gating prevents it. */
- if (adreno_is_a430(adreno_gpu) && adreno_gpu->rev.patchid < 2)
+ if (adreno_is_a430(adreno_gpu) && adreno_patchid(adreno_gpu) < 2)
gpu_write(gpu, REG_A4XX_RBBM_CLOCK_CTL, 0);
else
gpu_write(gpu, REG_A4XX_RBBM_CLOCK_CTL, 0xAAAAAAAA);
diff --git a/drivers/gpu/drm/msm/adreno/a5xx_gpu.c b/drivers/gpu/drm/msm/adreno/a5xx_gpu.c
index f0803e94ebe5..70d2b5342cd9 100644
--- a/drivers/gpu/drm/msm/adreno/a5xx_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/a5xx_gpu.c
@@ -1744,6 +1744,7 @@ struct msm_gpu *a5xx_gpu_init(struct drm_device *dev)
struct msm_drm_private *priv = dev->dev_private;
struct platform_device *pdev = priv->gpu_pdev;
struct adreno_platform_config *config = pdev->dev.platform_data;
+ const struct adreno_info *info;
struct a5xx_gpu *a5xx_gpu = NULL;
struct adreno_gpu *adreno_gpu;
struct msm_gpu *gpu;
@@ -1770,7 +1771,15 @@ struct msm_gpu *a5xx_gpu_init(struct drm_device *dev)
nr_rings = 4;
- if (adreno_cmp_rev(ADRENO_REV(5, 1, 0, ANY_ID), config->rev))
+ /*
+ * Note that we wouldn't have been able to get this far if there is not
+ * a device table entry for this chip_id
+ */
+ info = adreno_find_info(config->chip_id);
+ if (WARN_ON(!info))
+ return ERR_PTR(-EINVAL);
+
+ if (info->revn == 510)
nr_rings = 1;
ret = adreno_gpu_init(dev, pdev, adreno_gpu, &funcs, nr_rings);
diff --git a/drivers/gpu/drm/msm/adreno/a5xx_power.c b/drivers/gpu/drm/msm/adreno/a5xx_power.c
index 0e63a1429189..7705f8010484 100644
--- a/drivers/gpu/drm/msm/adreno/a5xx_power.c
+++ b/drivers/gpu/drm/msm/adreno/a5xx_power.c
@@ -179,7 +179,7 @@ static void a540_lm_setup(struct msm_gpu *gpu)
/* The battery current limiter isn't enabled for A540 */
config = AGC_LM_CONFIG_BCL_DISABLED;
- config |= adreno_gpu->rev.patchid << AGC_LM_CONFIG_GPU_VERSION_SHIFT;
+ config |= adreno_patchid(adreno_gpu) << AGC_LM_CONFIG_GPU_VERSION_SHIFT;
/* For now disable GPMU side throttling */
config |= AGC_LM_CONFIG_THROTTLE_DISABLE;
diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
index f1bb20574018..a9ba547a120c 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
@@ -790,10 +790,15 @@ static int a6xx_gmu_fw_start(struct a6xx_gmu *gmu, unsigned int state)
gmu_write(gmu, REG_A6XX_GMU_AHB_FENCE_RANGE_0,
(1 << 31) | (0xa << 18) | (0xa0));
- chipid = adreno_gpu->rev.core << 24;
- chipid |= adreno_gpu->rev.major << 16;
- chipid |= adreno_gpu->rev.minor << 12;
- chipid |= adreno_gpu->rev.patchid << 8;
+ /* Note that the GMU has a slightly different layout for
+ * chip_id, for whatever reason, so a bit of massaging
+ * is needed. The upper 16b are the same, but minor and
+ * patchid are packed in four bits each with the lower
+ * 8b unused:
+ */
+ chipid = adreno_gpu->chip_id & 0xffff0000;
+ chipid |= (adreno_gpu->chip_id << 4) & 0xf000; /* minor */
+ chipid |= (adreno_gpu->chip_id << 8) & 0x0f00; /* patchid */
I'd beg for explicit FIELD_GET and FIELD_PREP here.
gmu_write(gmu, REG_A6XX_GMU_HFI_SFR_ADDR, chipid);
diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
index 77b23c004b94..ed075729ca09 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
@@ -2344,10 +2344,13 @@ struct msm_gpu *a6xx_gpu_init(struct drm_device *dev)
/*
* 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
+ * and grab the revision number.
+ *
+ * Note that we wouldn't have been able to get this far if there is not
+ * a device table entry for this chip_id
Having seen this note twice, shouldn't we explicitly pass adreno_info to
our aNxx_gpu_init() functions and then further to adreno_gpu_init()?
*/
- info = adreno_info(config->rev);
- if (!info)
+ info = adreno_find_info(config->chip_id);
+ if (WARN_ON(!info))
return ERR_PTR(-EINVAL);
adreno_gpu->base.hw_apriv = !!(info->quirks & ADRENO_QUIRK_HAS_HW_APRIV);
diff --git a/drivers/gpu/drm/msm/adreno/adreno_device.c b/drivers/gpu/drm/msm/adreno/adreno_device.c
index fd2e183bce60..4a718ff33635 100644
--- a/drivers/gpu/drm/msm/adreno/adreno_device.c
+++ b/drivers/gpu/drm/msm/adreno/adreno_device.c
@@ -22,7 +22,7 @@ module_param_named(allow_vram_carveout, allow_vram_carveout, bool, 0600);
static const struct adreno_info gpulist[] = {
{
- .rev = ADRENO_REV(2, 0, 0, 0),
+ .chip_ids = ADRENO_CHIP_IDS(0x02000000),
This begs to use bit masks, but see below
.family = ADRENO_2XX_GEN1,
.revn = 200,
.fw = {
[skipped]
@@ -77,7 +77,11 @@ static const struct adreno_info gpulist[] = {
.inactive_period = DRM_MSM_INACTIVE_PERIOD,
.init = a3xx_gpu_init,
}, {
- .rev = ADRENO_REV(3, 2, ANY_ID, ANY_ID),
+ .chip_ids = ADRENO_CHIP_IDS(
+ 0x03020000,
+ 0x03020001,
+ 0x03020002
definitely a bitmask would help
+ ),
.family = ADRENO_3XX,
.revn = 320,
.fw = {
[skipped the rest]
@@ -494,31 +502,16 @@ MODULE_FIRMWARE("qcom/a630_sqe.fw");
MODULE_FIRMWARE("qcom/a630_gmu.bin");
MODULE_FIRMWARE("qcom/a630_zap.mbn");
-static inline bool _rev_match(uint8_t entry, uint8_t id)
-{
- return (entry == ANY_ID) || (entry == id);
-}
-
-bool adreno_cmp_rev(struct adreno_rev rev1, struct adreno_rev rev2)
-{
-
- return _rev_match(rev1.core, rev2.core) &&
- _rev_match(rev1.major, rev2.major) &&
- _rev_match(rev1.minor, rev2.minor) &&
- _rev_match(rev1.patchid, rev2.patchid);
-}
-
-const struct adreno_info *adreno_info(struct adreno_rev rev)
+const struct adreno_info *adreno_find_info(uint32_t chip_id)
{
- int i;
-
/* identify gpu: */
- for (i = 0; i < ARRAY_SIZE(gpulist); i++) {
+ for (int i = 0; i < ARRAY_SIZE(gpulist); i++) {
const struct adreno_info *info = &gpulist[i];
if (info->machine && !of_machine_is_compatible(info->machine))
continue;
- if (adreno_cmp_rev(info->rev, rev))
- return info;
+ for (int j = 0; info->chip_ids[j]; j++)
+ if (info->chip_ids[j] == chip_id)
+ return info;
}
return NULL;
@@ -598,12 +591,11 @@ struct msm_gpu *adreno_load_gpu(struct drm_device *dev)
return NULL;
}
-static int find_chipid(struct device *dev, struct adreno_rev *rev)
+static int find_chipid(struct device *dev, uint32_t *chipid)
{
struct device_node *node = dev->of_node;
const char *compat;
int ret;
- u32 chipid;
/* first search the compat strings for qcom,adreno-XYZ.W: */
ret = of_property_read_string_index(node, "compatible", 0, &compat);
@@ -612,32 +604,34 @@ static int find_chipid(struct device *dev, struct adreno_rev *rev)
if (sscanf(compat, "qcom,adreno-%u.%u", &r, &patch) == 2 ||
sscanf(compat, "amd,imageon-%u.%u", &r, &patch) == 2) {
- rev->core = r / 100;
+ uint32_t core, major, minor;
+
+ core = r / 100;
r %= 100;
- rev->major = r / 10;
+ major = r / 10;
r %= 10;
- rev->minor = r;
- rev->patchid = patch;
+ minor = r;
+
+ *chipid = (core << 24) |
+ (major << 16) |
+ (minor << 8) |
+ patch;
This starts to look realy crazy. I'd repeat my suggestion of moving
towards of_device match data. This would result in some duplication,
we'd have to explicitly list all supported compatibles in the
of_match_table. But then we can drop all the CHIPID lists from device
table and/or manual parsing of the chipid from the compat field.
This way we can have per-SoC overrides, etc.
return 0;
}
+
+ if (sscanf(compat, "qcom,adreno-%08x", chipid) == 1)
+ return 0;
}
/* and if that fails, fall back to legacy "qcom,chipid" property: */
- ret = of_property_read_u32(node, "qcom,chipid", &chipid);
+ ret = of_property_read_u32(node, "qcom,chipid", chipid);
if (ret) {
DRM_DEV_ERROR(dev, "could not parse qcom,chipid: %d\n", ret);
return ret;
}
- rev->core = (chipid >> 24) & 0xff;
- rev->major = (chipid >> 16) & 0xff;
- rev->minor = (chipid >> 8) & 0xff;
- rev->patchid = (chipid & 0xff);
-
dev_warn(dev, "Using legacy qcom,chipid binding!\n");
- dev_warn(dev, "Use compatible qcom,adreno-%u%u%u.%u instead.\n",
- rev->core, rev->major, rev->minor, rev->patchid);
return 0;
}
@@ -651,22 +645,22 @@ static int adreno_bind(struct device *dev, struct device *master, void *data)
struct msm_gpu *gpu;
int ret;
- ret = find_chipid(dev, &config.rev);
+ ret = find_chipid(dev, &config.chip_id);
if (ret)
return ret;
dev->platform_data = &config;
priv->gpu_pdev = to_platform_device(dev);
- info = adreno_info(config.rev);
+ info = adreno_find_info(config.chip_id);
if (!info) {
dev_warn(drm->dev, "Unknown GPU revision: %"ADRENO_CHIPID_FMT"\n",
- ADRENO_CHIPID_ARGS(config.rev));
+ ADRENO_CHIPID_ARGS(config.chip_id));
return -ENXIO;
}
- DBG("Found GPU: %"ADRENO_CHIPID_FMT, ADRENO_CHIPID_ARGS(config.rev));
+ DBG("Found GPU: %"ADRENO_CHIPID_FMT, ADRENO_CHIPID_ARGS(config.chip_id));
priv->is_a2xx = info->family < ADRENO_3XX;
priv->has_cached_coherent =
diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.c b/drivers/gpu/drm/msm/adreno/adreno_gpu.c
index 1a982a926f21..1274609a74b1 100644
--- a/drivers/gpu/drm/msm/adreno/adreno_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.c
@@ -326,10 +326,7 @@ int adreno_get_param(struct msm_gpu *gpu, struct msm_file_private *ctx,
*value = !adreno_is_a650_family(adreno_gpu) ? 0x100000 : 0;
return 0;
case MSM_PARAM_CHIP_ID:
- *value = (uint64_t)adreno_gpu->rev.patchid |
- ((uint64_t)adreno_gpu->rev.minor << 8) |
- ((uint64_t)adreno_gpu->rev.major << 16) |
- ((uint64_t)adreno_gpu->rev.core << 24);
+ *value = adreno_gpu->chip_id;
if (!adreno_gpu->info->revn)
*value |= ((uint64_t) adreno_gpu->speedbin) << 32;
return 0;
@@ -849,7 +846,7 @@ void adreno_show(struct msm_gpu *gpu, struct msm_gpu_state *state,
drm_printf(p, "revision: %u (%"ADRENO_CHIPID_FMT")\n",
adreno_gpu->info->revn,
- ADRENO_CHIPID_ARGS(adreno_gpu->rev));
+ ADRENO_CHIPID_ARGS(adreno_gpu->chip_id));
/*
* If this is state collected due to iova fault, so fault related info
*
@@ -922,7 +919,7 @@ void adreno_dump_info(struct msm_gpu *gpu)
printk("revision: %u (%"ADRENO_CHIPID_FMT")\n",
adreno_gpu->info->revn,
- ADRENO_CHIPID_ARGS(adreno_gpu->rev));
+ ADRENO_CHIPID_ARGS(adreno_gpu->chip_id));
for (i = 0; i < gpu->nr_rings; i++) {
struct msm_ringbuffer *ring = gpu->rb[i];
@@ -1072,14 +1069,13 @@ int adreno_gpu_init(struct drm_device *drm, struct platform_device *pdev,
struct adreno_platform_config *config = dev->platform_data;
struct msm_gpu_config adreno_gpu_config = { 0 };
struct msm_gpu *gpu = &adreno_gpu->base;
- struct adreno_rev *rev = &config->rev;
const char *gpu_name;
u32 speedbin;
int ret;
adreno_gpu->funcs = funcs;
- adreno_gpu->info = adreno_info(config->rev);
- adreno_gpu->rev = *rev;
+ adreno_gpu->info = adreno_find_info(config->chip_id);
+ adreno_gpu->chip_id = config->chip_id;
/* Only handle the core clock when GMU is not in use (or is absent). */
if (adreno_has_gmu_wrapper(adreno_gpu) ||
@@ -1104,7 +1100,7 @@ int adreno_gpu_init(struct drm_device *drm, struct platform_device *pdev,
adreno_gpu->speedbin = (uint16_t) (0xffff & speedbin);
gpu_name = devm_kasprintf(dev, GFP_KERNEL, "%"ADRENO_CHIPID_FMT,
- ADRENO_CHIPID_ARGS(config->rev));
+ ADRENO_CHIPID_ARGS(config->chip_id));
if (!gpu_name)
return -ENOMEM;
diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.h b/drivers/gpu/drm/msm/adreno/adreno_gpu.h
index 73e7155f164c..18f53c7ab589 100644
--- a/drivers/gpu/drm/msm/adreno/adreno_gpu.h
+++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.h
@@ -54,23 +54,15 @@ enum adreno_family {
#define ADRENO_QUIRK_HAS_HW_APRIV BIT(3)
#define ADRENO_QUIRK_HAS_CACHED_COHERENT BIT(4)
-struct adreno_rev {
- uint8_t core;
- uint8_t major;
- uint8_t minor;
- uint8_t patchid;
-};
-
-#define ANY_ID 0xff
-
-#define ADRENO_REV(core, major, minor, patchid) \
- ((struct adreno_rev){ core, major, minor, patchid })
-
/* Helper for formating the chip_id in the way that userspace tools like
* crashdec expect.
*/
#define ADRENO_CHIPID_FMT "u.%u.%u.%u"
-#define ADRENO_CHIPID_ARGS(_r) (_r).core, (_r).major, (_r).minor, (_r).patchid
+#define ADRENO_CHIPID_ARGS(_c) \
+ (((_c) >> 24) & 0xff), \
+ (((_c) >> 16) & 0xff), \
+ (((_c) >> 8) & 0xff), \
+ ((_c) & 0xff)
So, we still have some meaning for chipid?
