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Message-ID: <CAA8EJprScB_Nv_Qwt6t8WZW4a8-qNphUPqTuVX4YRXowaWdoiQ@mail.gmail.com>
Date: Fri, 28 Jul 2023 01:07:59 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To: Rob Clark <robdclark@...il.com>
Cc: dri-devel@...ts.freedesktop.org, freedreno@...ts.freedesktop.org,
linux-arm-msm@...r.kernel.org,
Akhil P Oommen <quic_akhilpo@...cinc.com>,
Konrad Dybcio <konrad.dybcio@...aro.org>,
Rob Clark <robdclark@...omium.org>,
Abhinav Kumar <quic_abhinavk@...cinc.com>,
Sean Paul <sean@...rly.run>,
Marijn Suijten <marijn.suijten@...ainline.org>,
David Airlie <airlied@...il.com>,
Daniel Vetter <daniel@...ll.ch>,
Mukesh Ojha <quic_mojha@...cinc.com>,
Elliot Berman <quic_eberman@...cinc.com>,
Adam Skladowski <a39.skl@...il.com>,
Douglas Anderson <dianders@...omium.org>,
Bjorn Andersson <andersson@...nel.org>,
Jernej Skrabec <jernej.skrabec@...il.com>,
open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 02/13] drm/msm/adreno: Remove redundant gmem size param
On Fri, 28 Jul 2023 at 00:22, Rob Clark <robdclark@...il.com> wrote:
>
> From: Rob Clark <robdclark@...omium.org>
>
> Even in the ocmem case, the allocated ocmem buffer size should match the
> requested size.
>
> v2: Move stray hunk to previous patch, make OCMEM size mismatch an error
> condition.
>
> Signed-off-by: Rob Clark <robdclark@...omium.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
> ---
> drivers/gpu/drm/msm/adreno/a2xx_gpu.c | 2 +-
> drivers/gpu/drm/msm/adreno/a5xx_gpu.c | 2 +-
> drivers/gpu/drm/msm/adreno/a6xx_gpu.c | 2 +-
> drivers/gpu/drm/msm/adreno/adreno_gpu.c | 9 +++++----
> drivers/gpu/drm/msm/adreno/adreno_gpu.h | 1 -
> 5 files changed, 8 insertions(+), 8 deletions(-)
>
> diff --git a/drivers/gpu/drm/msm/adreno/a2xx_gpu.c b/drivers/gpu/drm/msm/adreno/a2xx_gpu.c
> index c67089a7ebc1..50ee03bc94b4 100644
> --- a/drivers/gpu/drm/msm/adreno/a2xx_gpu.c
> +++ b/drivers/gpu/drm/msm/adreno/a2xx_gpu.c
> @@ -205,7 +205,7 @@ static int a2xx_hw_init(struct msm_gpu *gpu)
> A2XX_MH_INTERRUPT_MASK_MMU_PAGE_FAULT);
>
> for (i = 3; i <= 5; i++)
> - if ((SZ_16K << i) == adreno_gpu->gmem)
> + if ((SZ_16K << i) == adreno_gpu->info->gmem)
> break;
> gpu_write(gpu, REG_A2XX_RB_EDRAM_INFO, i);
>
> diff --git a/drivers/gpu/drm/msm/adreno/a5xx_gpu.c b/drivers/gpu/drm/msm/adreno/a5xx_gpu.c
> index a99310b68793..f0803e94ebe5 100644
> --- a/drivers/gpu/drm/msm/adreno/a5xx_gpu.c
> +++ b/drivers/gpu/drm/msm/adreno/a5xx_gpu.c
> @@ -749,7 +749,7 @@ static int a5xx_hw_init(struct msm_gpu *gpu)
> gpu_write(gpu, REG_A5XX_UCHE_GMEM_RANGE_MIN_LO, 0x00100000);
> gpu_write(gpu, REG_A5XX_UCHE_GMEM_RANGE_MIN_HI, 0x00000000);
> gpu_write(gpu, REG_A5XX_UCHE_GMEM_RANGE_MAX_LO,
> - 0x00100000 + adreno_gpu->gmem - 1);
> + 0x00100000 + adreno_gpu->info->gmem - 1);
> gpu_write(gpu, REG_A5XX_UCHE_GMEM_RANGE_MAX_HI, 0x00000000);
>
> if (adreno_is_a506(adreno_gpu) || adreno_is_a508(adreno_gpu) ||
> diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
> index b3ada1e7b598..edbade75020f 100644
> --- a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
> +++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
> @@ -1270,7 +1270,7 @@ static int hw_init(struct msm_gpu *gpu)
> gpu_write64(gpu, REG_A6XX_UCHE_GMEM_RANGE_MIN, 0x00100000);
>
> gpu_write64(gpu, REG_A6XX_UCHE_GMEM_RANGE_MAX,
> - 0x00100000 + adreno_gpu->gmem - 1);
> + 0x00100000 + adreno_gpu->info->gmem - 1);
> }
>
> gpu_write(gpu, REG_A6XX_UCHE_FILTER_CNTL, 0x804);
> diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.c b/drivers/gpu/drm/msm/adreno/adreno_gpu.c
> index e3cd9ff6ff1d..ef98d51d237f 100644
> --- a/drivers/gpu/drm/msm/adreno/adreno_gpu.c
> +++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.c
> @@ -320,7 +320,7 @@ int adreno_get_param(struct msm_gpu *gpu, struct msm_file_private *ctx,
> *value = adreno_gpu->info->revn;
> return 0;
> case MSM_PARAM_GMEM_SIZE:
> - *value = adreno_gpu->gmem;
> + *value = adreno_gpu->info->gmem;
> return 0;
> case MSM_PARAM_GMEM_BASE:
> *value = !adreno_is_a650_family(adreno_gpu) ? 0x100000 : 0;
> @@ -1041,14 +1041,16 @@ int adreno_gpu_ocmem_init(struct device *dev, struct adreno_gpu *adreno_gpu,
> return PTR_ERR(ocmem);
> }
>
> - ocmem_hdl = ocmem_allocate(ocmem, OCMEM_GRAPHICS, adreno_gpu->gmem);
> + ocmem_hdl = ocmem_allocate(ocmem, OCMEM_GRAPHICS, adreno_gpu->info->gmem);
> if (IS_ERR(ocmem_hdl))
> return PTR_ERR(ocmem_hdl);
>
> adreno_ocmem->ocmem = ocmem;
> adreno_ocmem->base = ocmem_hdl->addr;
> adreno_ocmem->hdl = ocmem_hdl;
> - adreno_gpu->gmem = ocmem_hdl->len;
> +
> + if (WARN_ON(ocmem_hdl->len != adreno_gpu->info->gmem))
> + return -ENOMEM;
>
> return 0;
> }
> @@ -1097,7 +1099,6 @@ int adreno_gpu_init(struct drm_device *drm, struct platform_device *pdev,
>
> adreno_gpu->funcs = funcs;
> adreno_gpu->info = adreno_info(config->rev);
> - adreno_gpu->gmem = adreno_gpu->info->gmem;
> adreno_gpu->revn = adreno_gpu->info->revn;
> adreno_gpu->rev = *rev;
>
> diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.h b/drivers/gpu/drm/msm/adreno/adreno_gpu.h
> index 6830c3776c2d..aaf09c642dc6 100644
> --- a/drivers/gpu/drm/msm/adreno/adreno_gpu.h
> +++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.h
> @@ -77,7 +77,6 @@ struct adreno_gpu {
> struct msm_gpu base;
> struct adreno_rev rev;
> const struct adreno_info *info;
> - uint32_t gmem; /* actual gmem size */
> uint32_t revn; /* numeric revision name */
> uint16_t speedbin;
> const struct adreno_gpu_funcs *funcs;
> --
> 2.41.0
>
--
With best wishes
Dmitry
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