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[66.131.184.68]) by smtp.gmail.com with ESMTPSA id a22sm4834630qtp.80.2021.04.23.12.12.14 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 23 Apr 2021 12:12:15 -0700 (PDT) From: Jonathan Marek To: freedreno@lists.freedesktop.org Cc: Rob Clark , Sean Paul , David Airlie , Daniel Vetter , linux-arm-msm@vger.kernel.org (open list:DRM DRIVER FOR MSM ADRENO GPU), dri-devel@lists.freedesktop.org (open list:DRM DRIVER FOR MSM ADRENO GPU), linux-kernel@vger.kernel.org (open list) Subject: [PATCH 3/5] drm/msm: use the right pgprot when mapping BOs in the kernel Date: Fri, 23 Apr 2021 15:08:19 -0400 Message-Id: <20210423190833.25319-4-jonathan@marek.ca> X-Mailer: git-send-email 2.26.1 In-Reply-To: <20210423190833.25319-1-jonathan@marek.ca> References: <20210423190833.25319-1-jonathan@marek.ca> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Use the same logic as the userspace mapping. This fixes msm_rd with cached BOs. Signed-off-by: Jonathan Marek Acked-by: Jordan Crouse --- drivers/gpu/drm/msm/msm_gem.c | 19 +++++++++++-------- 1 file changed, 11 insertions(+), 8 deletions(-) diff --git a/drivers/gpu/drm/msm/msm_gem.c b/drivers/gpu/drm/msm/msm_gem.c index 09abda42d764..0f58937be0a9 100644 --- a/drivers/gpu/drm/msm/msm_gem.c +++ b/drivers/gpu/drm/msm/msm_gem.c @@ -199,6 +199,15 @@ void msm_gem_put_pages(struct drm_gem_object *obj) /* when we start tracking the pin count, then do something here */ } +static pgprot_t msm_gem_pgprot(struct msm_gem_object *msm_obj, pgprot_t prot) +{ + if (msm_obj->flags & MSM_BO_WC) + return pgprot_writecombine(prot); + if (msm_obj->flags & MSM_BO_UNCACHED) + return pgprot_noncached(prot); + return prot; +} + int msm_gem_mmap_obj(struct drm_gem_object *obj, struct vm_area_struct *vma) { @@ -206,13 +215,7 @@ int msm_gem_mmap_obj(struct drm_gem_object *obj, vma->vm_flags &= ~VM_PFNMAP; vma->vm_flags |= VM_MIXEDMAP; - - if (msm_obj->flags & MSM_BO_WC) - vma->vm_page_prot = pgprot_writecombine(vm_get_page_prot(vma->vm_flags)); - else if (msm_obj->flags & MSM_BO_UNCACHED) - vma->vm_page_prot = pgprot_noncached(vm_get_page_prot(vma->vm_flags)); - else - vma->vm_page_prot = vm_get_page_prot(vma->vm_flags); + vma->vm_page_prot = msm_gem_pgprot(msm_obj, vm_get_page_prot(vma->vm_flags)); return 0; } @@ -632,7 +635,7 @@ static void *get_vaddr(struct drm_gem_object *obj, unsigned madv) goto fail; } msm_obj->vaddr = vmap(pages, obj->size >> PAGE_SHIFT, - VM_MAP, pgprot_writecombine(PAGE_KERNEL)); + VM_MAP, msm_gem_pgprot(msm_obj, PAGE_KERNEL)); if (msm_obj->vaddr == NULL) { ret = -ENOMEM; goto fail;