[Freedreno] [PATCH 12/12] drm/msm/adreno: Switch to chip-id for identifying GPU
Dmitry Baryshkov
dmitry.baryshkov at linaro.org
Thu Jul 13 22:53:24 UTC 2023
On Fri, 14 Jul 2023 at 01:06, Rob Clark <robdclark at gmail.com> wrote:
>
> On Thu, Jul 13, 2023 at 2:39 PM Akhil P Oommen <quic_akhilpo at quicinc.com> wrote:
> >
> > On Fri, Jul 07, 2023 at 06:45:42AM +0300, Dmitry Baryshkov wrote:
> > >
> > > On 07/07/2023 00:10, Rob Clark wrote:
> > > > From: Rob Clark <robdclark at chromium.org>
> > > >
> > > > 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 at chromium.org>
> > > > ---
> > > > 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?
> > >
> > > > struct adreno_gpu_funcs {
> > > > struct msm_gpu_funcs base;
> > > > @@ -87,7 +79,12 @@ extern const struct adreno_reglist a660_hwcg[], a690_hwcg[];
> > > > struct adreno_info {
> > > > const char *machine;
> > > > - struct adreno_rev rev;
> > > > + /**
> > > > + * @chipids: Table of matching chip-ids
> > > > + *
> > > > + * Terminated with 0 sentinal
> > > > + */
> > > > + uint32_t *chip_ids;
> > > > enum adreno_family family;
> > > > uint32_t revn;
> > > > const char *fw[ADRENO_FW_MAX];
> > > > @@ -107,6 +104,8 @@ struct adreno_info {
> > > > uint32_t *speedbins;
> > > > };
> > > > +#define ADRENO_CHIP_IDS(tbl...) (uint32_t[]) { tbl, 0 }
> > > > +
> > > > /*
> > > > * Helper to build a speedbin table, ie. the table:
> > > > * fuse | speedbin
> > > > @@ -125,12 +124,12 @@ struct adreno_info {
> > > > */
> > > > #define ADRENO_SPEEDBINS(tbl...) (uint32_t[]) { tbl, UINT_MAX }
> > > > -const struct adreno_info *adreno_info(struct adreno_rev rev);
> > > > +const struct adreno_info *adreno_find_info(uint32_t chip_id);
> > > > struct adreno_gpu {
> > > > struct msm_gpu base;
> > > > - struct adreno_rev rev;
> > > > const struct adreno_info *info;
> > > > + uint32_t chip_id;
> > > > uint16_t speedbin;
> > > > const struct adreno_gpu_funcs *funcs;
> > > > @@ -179,7 +178,7 @@ struct adreno_ocmem {
> > > > /* platform config data (ie. from DT, or pdata) */
> > > > struct adreno_platform_config {
> > > > - struct adreno_rev rev;
> > > > + uint32_t chip_id;
> > > > };
> > > > #define ADRENO_IDLE_TIMEOUT msecs_to_jiffies(1000)
> > > > @@ -196,7 +195,15 @@ struct adreno_platform_config {
> > > > __ret; \
> > > > })
> > > > -bool adreno_cmp_rev(struct adreno_rev rev1, struct adreno_rev rev2);
> > > > +static inline uint8_t adreno_patchid(const struct adreno_gpu *gpu)
> > > > +{
> > > > + /* It is probably ok to assume legacy "adreno_rev" format
> > > > + * for all a6xx devices, but probably best to limit this
> > > > + * to older things.
> > > > + */
> > > > + WARN_ON_ONCE(gpu->info->family >= ADRENO_6XX_GEN1);
> > > > + return gpu->chip_id & 0xff;
> > > > +}
> > > > static inline bool adreno_is_revn(const struct adreno_gpu *gpu, uint32_t revn)
> > > > {
> > > > @@ -252,7 +259,7 @@ static inline bool adreno_is_a330(const struct adreno_gpu *gpu)
> > > > static inline bool adreno_is_a330v2(const struct adreno_gpu *gpu)
> > > > {
> > > > - return adreno_is_a330(gpu) && (gpu->rev.patchid > 0);
> > > > + return adreno_is_a330(gpu) && (adreno_patchid(gpu) > 0);
> > > > }
> > > > static inline int adreno_is_a405(const struct adreno_gpu *gpu)
> > > > @@ -342,8 +349,7 @@ static inline int adreno_is_a650(const struct adreno_gpu *gpu)
> > > > static inline int adreno_is_7c3(const struct adreno_gpu *gpu)
> > > > {
> > > > - /* The order of args is important here to handle ANY_ID correctly */
> > > > - return adreno_cmp_rev(ADRENO_REV(6, 3, 5, ANY_ID), gpu->rev);
> > > > + return gpu->info->chip_ids[0] == 0x06030500;
> >
> > Why not use adreno_gpu->chip_id here? Or do we need this check before
> > adreno_gpu_init()? I thought we got rid of those.
>
> This is intentional, because there can be multiple chip-id's for a
> single table entry, in theory. But the first chip_id in the gpu table
> entry should suffice, and is simpler than comparing
> adreno_gpu->chip_id against each possible match.
But why can't we use of_device_id::data ?
>
> BR,
> -R
>
> > >
> > > Ugh. The thing that bugs me isn't even the manual comparison of chip_ids[0],
> > > but the fact that these two platforms stand aside. I think at the end we
> > > should have a single mechanism for checking GPU's SKUs.
> > >
> > > Or maybe we should get rid of that completely.
> > >
> > > If we get rid of a single gpulist table and move individual GPU info
> > > definitions to aNxx_gpu.c, we can subclass a generic info structure with
> > > generation-specific data, for example generation-specific quirks, pointers
> > > to hcwg or VBIF registers, etc. And then instead of having adreno_is_foo all
> > > over the code we can migrate most of these checks to data in the gpu info
> > > data.
> >
> > I think the downstream driver does what you described here. It helps to
> > move more generation-specific data to the table without inflating the
> > gpu table size.
> >
> > -Akhil
> >
> > >
> > > > }
> > > > static inline int adreno_is_a660(const struct adreno_gpu *gpu)
> > > > @@ -358,8 +364,7 @@ static inline int adreno_is_a680(const struct adreno_gpu *gpu)
> > > > static inline int adreno_is_a690(const struct adreno_gpu *gpu)
> > > > {
> > > > - /* The order of args is important here to handle ANY_ID correctly */
> > > > - return adreno_cmp_rev(ADRENO_REV(6, 9, 0, ANY_ID), gpu->rev);
> > > > + return gpu->info->chip_ids[0] == 0x06090000;
> > > > };
> > > > /* check for a615, a616, a618, a619 or any a630 derivatives */
> > > > static inline int adreno_is_a630_family(const struct adreno_gpu *gpu)
> > >
> > > --
> > > With best wishes
> > > Dmitry
> > >
--
With best wishes
Dmitry
More information about the dri-devel
mailing list