Linux kernel stable tree (mirror) https://git.radix-linux.su/kernel/linux.git/atom?h=linux-7.0.y 2025-12-09T12:09:37+00:00 2025-12-09T12:09:37+00:00 Faith Ekstrand faith.ekstrand@collabora.com 2025-12-08T10:08:39+00:00 urn:sha1:62eedf1ccba534b318ca85d3890bf0951b9e0f87 Will be used by the UMD to optimize CPU accesses to buffers that are frequently read by the CPU, or on which the access pattern makes non-cacheable mappings inefficient. Mapping buffers CPU-cached implies taking care of the CPU cache maintenance in the UMD, unless the GPU is IO coherent. v2: - Add more to the commit message v3: - No changes v4: - Fix the map_wc test in panfrost_ioctl_query_bo_info() v5: - Drop Steve's R-b (enough has changed to justify a new review) v6: - Collect R-b v7: - No changes v8: - Fix double drm_gem_object_funcs::export assignment Signed-off-by: Faith Ekstrand <faith.ekstrand@collabora.com> Reviewed-by: Steven Price <steven.price@arm.com> Link: https://patch.msgid.link/20251208100841.730527-13-boris.brezillon@collabora.com Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com> 2025-12-09T12:09:37+00:00 Boris Brezillon boris.brezillon@collabora.com 2025-12-08T10:08:38+00:00 urn:sha1:d17592e61fa8e3b2d58df7c4a24abc8ac58b8d3f This is useful when importing BOs, so we can know about cacheability and flush the caches when needed. v2: - New commit v3: - Add Steve's R-b v4: - No changes v5: - No changes v6: - No changes v7: - No changes v8: - No changes Reviewed-by: Steven Price <steven.price@arm.com> Link: https://patch.msgid.link/20251208100841.730527-12-boris.brezillon@collabora.com Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com> 2025-12-09T12:09:36+00:00 Faith Ekstrand faith.ekstrand@collabora.com 2025-12-08T10:08:37+00:00 urn:sha1:7be45f5489769520aa9276137d0f1f543fb81286 This will be used by the UMD to synchronize CPU-cached mappings when the UMD can't do it directly (no usermode cache maintenance instruction on Arm32). v2: - Add more to the commit message - Change the flags to better match the drm_gem_shmem_sync semantics v3: - Add Steve's R-b v4: - No changes v5: - Drop Steve's R-b (semantics changes requiring a new review) v6: - Bail out early in panfrost_ioctl_sync_bo() if op_count is zero v7: - Hand-roll our own bo_sync() helper v8: - Collect R-b Signed-off-by: Faith Ekstrand <faith.ekstrand@collabora.com> Reviewed-by: Steven Price <steven.price@arm.com> Link: https://patch.msgid.link/20251208100841.730527-11-boris.brezillon@collabora.com Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com> 2025-12-09T12:09:36+00:00 Boris Brezillon boris.brezillon@collabora.com 2025-12-08T10:08:36+00:00 urn:sha1:2396d65d94fc75d39f096b9777f9edc9c8e677c1 Will be needed if we want to skip CPU cache maintenance operations when the GPU can snoop CPU caches. v2: - New commit v3: - Fix the coherency values (enum instead of bitmask) v4: - Fix init/test on coherency_features v5: - No changes v6: - Collect R-b v7: - No changes v8: - No changes Reviewed-by: Steven Price <steven.price@arm.com> Link: https://patch.msgid.link/20251208100841.730527-10-boris.brezillon@collabora.com Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com> 2025-11-06T08:34:12+00:00 Randy Dunlap rdunlap@infradead.org 2025-10-31T05:41:51+00:00 urn:sha1:b6fa6100cec0287856ec1b363b0a962a9be90e6c Fix all kernel-doc warnings in include/uapi/drm/panfrost_drm.h. This mostly means modifying existing comments to conform to kernel-doc format, but there also some additions of missing kernel-doc comments and changing non-kernel-doc comments to use "/*" to begin them. Warning: panfrost_drm.h:83 struct member 'jc' not described in 'drm_panfrost_submit' Warning: panfrost_drm.h:83 struct member 'in_syncs' not described in 'drm_panfrost_submit' Warning: panfrost_drm.h:83 struct member 'in_sync_count' not described in 'drm_panfrost_submit' Warning: panfrost_drm.h:83 struct member 'out_sync' not described in 'drm_panfrost_submit' Warning: panfrost_drm.h:83 struct member 'bo_handles' not described in 'drm_panfrost_submit' Warning: panfrost_drm.h:83 struct member 'bo_handle_count' not described in 'drm_panfrost_submit' Warning: panfrost_drm.h:83 struct member 'requirements' not described in 'drm_panfrost_submit' Warning: panfrost_drm.h:83 struct member 'jm_ctx_handle' not described in 'drm_panfrost_submit' Warning: panfrost_drm.h:83 struct member 'pad' not described in 'drm_panfrost_submit' Warning: panfrost_drm.h:116 Incorrect use of kernel-doc format: * Returned offset for the BO in the GPU address space. This offset Warning: panfrost_drm.h:124 struct member 'size' not described in 'drm_panfrost_create_bo' Warning: panfrost_drm.h:124 struct member 'flags' not described in 'drm_panfrost_create_bo' Warning: panfrost_drm.h:124 struct member 'handle' not described in 'drm_panfrost_create_bo' Warning: panfrost_drm.h:124 struct member 'pad' not described in 'drm_panfrost_create_bo' Warning: panfrost_drm.h:124 struct member 'nonzero' not described in 'drm_panfrost_create_bo' Warning: panfrost_drm.h:143 struct member 'handle' not described in 'drm_panfrost_mmap_bo' Warning: panfrost_drm.h:143 struct member 'flags' not described in 'drm_panfrost_mmap_bo' Warning: panfrost_drm.h:143 struct member 'offset' not described in 'drm_panfrost_mmap_bo' Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Reviewed-by: Steven Price <steven.price@arm.com> Reviewed-by: Adrián Larumbe <adrian.larumbe@collabora.com> Signed-off-by: Steven Price <steven.price@arm.com> Link: https://patch.msgid.link/20251031054152.1406764-1-rdunlap@infradead.org 2025-09-18T13:09:47+00:00 Boris Brezillon boris.brezillon@collabora.com 2025-09-17T19:18:37+00:00 urn:sha1:b060004f06ae0a3064bddb87a3f8ad13f859fcf3 The new uAPI lets user space query the KM driver for the available priorities a job can be given at submit time. These are managed through the notion of a context, for which we also provide new creation and destruction ioctls. Reviewed-by: Steven Price <steven.price@arm.com> Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com> Signed-off-by: Adrián Larumbe <adrian.larumbe@collabora.com> Signed-off-by: Steven Price <steven.price@arm.com> Link: https://lore.kernel.org/r/20250917191859.500279-2-adrian.larumbe@collabora.com 2025-06-02T12:51:15+00:00 Adrián Larumbe adrian.larumbe@collabora.com 2025-05-20T17:44:00+00:00 urn:sha1:2f684bbbcb27048e6b16732b440dbadc0e342363 Allow UM to label a BO for which it possesses a DRM handle. Signed-off-by: Adrián Larumbe <adrian.larumbe@collabora.com> Reviewed-by: Steven Price <steven.price@arm.com> Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com> Signed-off-by: Steven Price <steven.price@arm.com> Link: https://lore.kernel.org/r/20250520174634.353267-4-adrian.larumbe@collabora.com 2024-09-02T09:13:38+00:00 Mary Guillemard mary.guillemard@collabora.com 2024-08-19T08:02:23+00:00 urn:sha1:3a8d97611b564b5b25f68c90b543056fc9ae0bec Extend the uAPI with a new job requirement flag for cycle counters. This requirement is used by userland to indicate that a job requires cycle counters or system timestamp to be propagated. (for use with write value timestamp jobs) We cannot enable cycle counters unconditionally as this would result in an increase of GPU power consumption. As a result, they should be left off unless required by the application. If a job requires cycle counters or system timestamps propagation, we must enable cycle counting before issuing a job and disable it right after the job completes. Since this extends the uAPI and because userland needs a way to advertise features like VK_KHR_shader_clock conditionally, we bumps the driver minor version. v2: - Rework commit message - Squash uAPI changes and implementation in this commit - Simplify changes based on Steven Price comments v3: - Add Steven Price r-b - Fix a codestyle issue Signed-off-by: Mary Guillemard <mary.guillemard@collabora.com> Reviewed-by: Steven Price <steven.price@arm.com> Tested-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Steven Price <steven.price@arm.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240819080224.24914-3-mary.guillemard@collabora.com 2024-09-02T09:13:38+00:00 Mary Guillemard mary.guillemard@collabora.com 2024-08-19T08:02:22+00:00 urn:sha1:9c75b16cabc69adbbfdc9d219df87c9173f0da0a Expose system timestamp and frequency supported by the GPU. Mali uses an external timer as GPU system time. On ARM, this is wired to the generic arch timer so we wire cntfrq_el0 as device frequency. This new uAPI will be used in Mesa to implement timestamp queries and VK_KHR_calibrated_timestamps. v2: - Rewrote to use GPU timestamp register - Add missing include for arch_timer_get_cntfrq - Rework commit message v3: - Move panfrost_cycle_counter_get and panfrost_cycle_counter_put to panfrost_ioctl_query_timestamp - Handle possible overflow in panfrost_timestamp_read Signed-off-by: Mary Guillemard <mary.guillemard@collabora.com> Tested-by: Heiko Stuebner <heiko@sntech.de> Reviewed-by: Steven Price <steven.price@arm.com> Signed-off-by: Steven Price <steven.price@arm.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240819080224.24914-2-mary.guillemard@collabora.com 2022-11-07T15:35:43+00:00 Steven Price steven.price@arm.com 2022-11-03T11:40:36+00:00 urn:sha1:c4299907c09a638c0a30f029338d07941c049d73 Commit 72655fb942c1 ("drm/panfrost: replace endian-specific types with native ones") accidentally reverted part of the parent commit 7228d9d79248 ("drm/panfrost: Remove type name from internal structs") leading to the situation that the Panfrost UAPI header still doesn't compile correctly in C++. Revert the accidental revert and pass me a brown paper bag. Reported-by: Alyssa Rosenzweig <alyssa@collabora.com> Fixes: 72655fb942c1 ("drm/panfrost: replace endian-specific types with native ones") Signed-off-by: Steven Price <steven.price@arm.com> Reviewed-by: Alyssa Rosenzweig <alyssa@collabora.com> Link: https://patchwork.freedesktop.org/patch/msgid/20221103114036.1581854-1-steven.price@arm.com