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([2a02:810d:4b3f:de9c:642:1aff:fe31:a19f]) by smtp.gmail.com with ESMTPSA id x25-20020a170906135900b00992acab8c45sm4266461ejb.12.2023.07.13.10.04.45 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 13 Jul 2023 10:04:46 -0700 (PDT) From: Danilo Krummrich To: airlied@gmail.com, daniel@ffwll.ch, tzimmermann@suse.de, mripard@kernel.org, corbet@lwn.net, christian.koenig@amd.com, bskeggs@redhat.com, Liam.Howlett@oracle.com, matthew.brost@intel.com, boris.brezillon@collabora.com, alexdeucher@gmail.com, ogabbay@kernel.org, bagasdotme@gmail.com, willy@infradead.org, jason@jlekstrand.net, donald.robson@imgtec.com Cc: dri-devel@lists.freedesktop.org, nouveau@lists.freedesktop.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, Danilo Krummrich Subject: [PATCH drm-next v7 03/13] drm: debugfs: provide infrastructure to dump a DRM GPU VA space Date: Thu, 13 Jul 2023 19:03:58 +0200 Message-ID: <20230713170429.2964-4-dakr@redhat.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230713170429.2964-1-dakr@redhat.com> References: <20230713170429.2964-1-dakr@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" This commit adds a function to dump a DRM GPU VA space and a macro for drivers to register the struct drm_info_list 'gpuvas' entry. Most likely, most drivers might maintain one DRM GPU VA space per struct drm_file, but there might also be drivers not having a fixed relation between DRM GPU VA spaces and a DRM core infrastructure, hence we need the indirection via the driver iterating it's maintained DRM GPU VA spaces. Reviewed-by: Boris Brezillon Signed-off-by: Danilo Krummrich --- drivers/gpu/drm/drm_debugfs.c | 40 +++++++++++++++++++++++++++++++++++ include/drm/drm_debugfs.h | 25 ++++++++++++++++++++++ 2 files changed, 65 insertions(+) diff --git a/drivers/gpu/drm/drm_debugfs.c b/drivers/gpu/drm/drm_debugfs.c index 4855230ba2c6..c90dbcffa0dc 100644 --- a/drivers/gpu/drm/drm_debugfs.c +++ b/drivers/gpu/drm/drm_debugfs.c @@ -39,6 +39,7 @@ #include #include #include +#include =20 #include "drm_crtc_internal.h" #include "drm_internal.h" @@ -175,6 +176,45 @@ static const struct file_operations drm_debugfs_fops = =3D { .release =3D single_release, }; =20 +/** + * drm_debugfs_gpuva_info - dump the given DRM GPU VA space + * @m: pointer to the &seq_file to write + * @mgr: the &drm_gpuva_manager representing the GPU VA space + * + * Dumps the GPU VA mappings of a given DRM GPU VA manager. + * + * For each DRM GPU VA space drivers should call this function from their + * &drm_info_list's show callback. + * + * Returns: 0 on success, -ENODEV if the &mgr is not initialized + */ +int drm_debugfs_gpuva_info(struct seq_file *m, + struct drm_gpuva_manager *mgr) +{ + struct drm_gpuva *va, *kva =3D &mgr->kernel_alloc_node; + + if (!mgr->name) + return -ENODEV; + + seq_printf(m, "DRM GPU VA space (%s) [0x%016llx;0x%016llx]\n", + mgr->name, mgr->mm_start, mgr->mm_start + mgr->mm_range); + seq_printf(m, "Kernel reserved node [0x%016llx;0x%016llx]\n", + kva->va.addr, kva->va.addr + kva->va.range); + seq_puts(m, "\n"); + seq_puts(m, " VAs | start | range | end = | object | object offset\n"); + seq_puts(m, "------------------------------------------------------------= -------------------------------------------------\n"); + drm_gpuva_for_each_va(va, mgr) { + if (unlikely(va =3D=3D kva)) + continue; + + seq_printf(m, " | 0x%016llx | 0x%016llx | 0x%016llx | 0x%016llx | 0x= %016llx\n", + va->va.addr, va->va.range, va->va.addr + va->va.range, + (u64)va->gem.obj, va->gem.offset); + } + + return 0; +} +EXPORT_SYMBOL(drm_debugfs_gpuva_info); =20 /** * drm_debugfs_create_files - Initialize a given set of debugfs files for = DRM diff --git a/include/drm/drm_debugfs.h b/include/drm/drm_debugfs.h index 7616f457ce70..cb2c1956a214 100644 --- a/include/drm/drm_debugfs.h +++ b/include/drm/drm_debugfs.h @@ -34,6 +34,22 @@ =20 #include #include + +#include + +/** + * DRM_DEBUGFS_GPUVA_INFO - &drm_info_list entry to dump a GPU VA space + * @show: the &drm_info_list's show callback + * @data: driver private data + * + * Drivers should use this macro to define a &drm_info_list entry to provi= de a + * debugfs file for dumping the GPU VA space regions and mappings. + * + * For each DRM GPU VA space drivers should call drm_debugfs_gpuva_info() = from + * their @show callback. + */ +#define DRM_DEBUGFS_GPUVA_INFO(show, data) {"gpuvas", show, DRIVER_GEM_GPU= VA, data} + /** * struct drm_info_list - debugfs info list entry * @@ -134,6 +150,9 @@ void drm_debugfs_add_file(struct drm_device *dev, const= char *name, =20 void drm_debugfs_add_files(struct drm_device *dev, const struct drm_debugfs_info *files, int count); + +int drm_debugfs_gpuva_info(struct seq_file *m, + struct drm_gpuva_manager *mgr); #else static inline void drm_debugfs_create_files(const struct drm_info_list *fi= les, int count, struct dentry *root, @@ -155,6 +174,12 @@ static inline void drm_debugfs_add_files(struct drm_de= vice *dev, const struct drm_debugfs_info *files, int count) {} + +static inline int drm_debugfs_gpuva_info(struct seq_file *m, + struct drm_gpuva_manager *mgr) +{ + return 0; +} #endif =20 #endif /* _DRM_DEBUGFS_H_ */ --=20 2.41.0