[Freedreno] [PATCH 06/12] drm/msm/adreno: Allow SoC specific gpu device table entries

[Akhil P Oommen]

On Fri, Jul 07, 2023 at 05:34:04AM +0300, Dmitry Baryshkov wrote:
> 
> On 07/07/2023 00:10, Rob Clark wrote:
> > From: Rob Clark <robdclark at chromium.org>
> > 
> > There are cases where there are differences due to SoC integration.
> > Such as cache-coherency support, and (in the next patch) e-fuse to
> > speedbin mappings.
> 
> I have the feeling that we are trying to circumvent the way DT works. I'd
> suggest adding explicit SoC-compatible strings to Adreno bindings and then
> using of_device_id::data and then of_device_get_match_data().
> 
Just thinking, then how about a unique compatible string which we match
to identify gpu->info and drop chip-id check completely here?

-Akhil

> > 
> > Signed-off-by: Rob Clark <robdclark at chromium.org>
> > ---
> >   drivers/gpu/drm/msm/adreno/adreno_device.c | 34 +++++++++++++++++++---
> >   drivers/gpu/drm/msm/adreno/adreno_gpu.h    |  1 +
> >   2 files changed, 31 insertions(+), 4 deletions(-)
> > 
> > diff --git a/drivers/gpu/drm/msm/adreno/adreno_device.c b/drivers/gpu/drm/msm/adreno/adreno_device.c
> > index 3c531da417b9..e62bc895a31f 100644
> > --- a/drivers/gpu/drm/msm/adreno/adreno_device.c
> > +++ b/drivers/gpu/drm/msm/adreno/adreno_device.c
> > @@ -258,6 +258,32 @@ static const struct adreno_info gpulist[] = {
> >   		.inactive_period = DRM_MSM_INACTIVE_PERIOD,
> >   		.quirks = ADRENO_QUIRK_HAS_CACHED_COHERENT,
> >   		.init = a6xx_gpu_init,
> > +	}, {
> > +		.machine = "qcom,sm4350",
> > +		.rev = ADRENO_REV(6, 1, 9, ANY_ID),
> > +		.revn = 619,
> > +		.fw = {
> > +			[ADRENO_FW_SQE] = "a630_sqe.fw",
> > +			[ADRENO_FW_GMU] = "a619_gmu.bin",
> > +		},
> > +		.gmem = SZ_512K,
> > +		.inactive_period = DRM_MSM_INACTIVE_PERIOD,
> > +		.init = a6xx_gpu_init,
> > +		.zapfw = "a615_zap.mdt",
> > +		.hwcg = a615_hwcg,
> > +	}, {
> > +		.machine = "qcom,sm6375",
> > +		.rev = ADRENO_REV(6, 1, 9, ANY_ID),
> > +		.revn = 619,
> > +		.fw = {
> > +			[ADRENO_FW_SQE] = "a630_sqe.fw",
> > +			[ADRENO_FW_GMU] = "a619_gmu.bin",
> > +		},
> > +		.gmem = SZ_512K,
> > +		.inactive_period = DRM_MSM_INACTIVE_PERIOD,
> > +		.init = a6xx_gpu_init,
> > +		.zapfw = "a615_zap.mdt",
> > +		.hwcg = a615_hwcg,
> >   	}, {
> >   		.rev = ADRENO_REV(6, 1, 9, ANY_ID),
> >   		.revn = 619,
> > @@ -409,6 +435,8 @@ const struct adreno_info *adreno_info(struct adreno_rev rev)
> >   	/* identify gpu: */
> >   	for (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;
> >   	}
> > @@ -563,6 +591,8 @@ 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 =
> > +		!!(info->quirks & ADRENO_QUIRK_HAS_CACHED_COHERENT);
> >   	gpu = info->init(drm);
> >   	if (IS_ERR(gpu)) {
> > @@ -574,10 +604,6 @@ static int adreno_bind(struct device *dev, struct device *master, void *data)
> >   	if (ret)
> >   		return ret;
> > -	priv->has_cached_coherent =
> > -		!!(info->quirks & ADRENO_QUIRK_HAS_CACHED_COHERENT) &&
> > -		!adreno_has_gmu_wrapper(to_adreno_gpu(gpu));
> > -
> >   	return 0;
> >   }
> > diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.h b/drivers/gpu/drm/msm/adreno/adreno_gpu.h
> > index e08d41337169..d5335b99c64c 100644
> > --- a/drivers/gpu/drm/msm/adreno/adreno_gpu.h
> > +++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.h
> > @@ -61,6 +61,7 @@ extern const struct adreno_reglist a612_hwcg[], a615_hwcg[], a630_hwcg[], a640_h
> >   extern const struct adreno_reglist a660_hwcg[], a690_hwcg[];
> >   struct adreno_info {
> > +	const char *machine;
> >   	struct adreno_rev rev;
> >   	uint32_t revn;
> >   	const char *fw[ADRENO_FW_MAX];
> 
> -- 
> With best wishes
> Dmitry
>