lwn.git/drivers/gpu/drm/nouveau/nvkm/subdev, branch master

Revert "drm/nouveau/gsp: add support for GA100"

2026-04-30T23:08:00+00:00

This reverts commit 20e0c197802c545db220157fafd567a10f2b7672. Despite claiming to add GA100 support, that commit actually has quite a few problems. It falsely claims that there is no VBIOS. GA100 does have a VBIOS, but it has no display engine, so it cannot use the PRAMIN method the read VBIOS and must fall back to using PROM. For whatever reason, the VBIOS on GA100 has an "Init-from-ROM" (IFR) header where the PCI Expansion ROM would normally be found. So to find that ROM, Nouveau needs to parse the IFR header. The commit also falsely claimed that there is no graphics (GR) engine. So rather than try to fix that commit, just revert it and start over from scratch. Signed-off-by: Timur Tabi Link: https://patch.msgid.link/20260430223838.2530778-2-ttabi@nvidia.com Signed-off-by: Danilo Krummrich

Merge tag 'drm-misc-next-2026-02-26' of https://gitlab.freedesktop.org/drm/misc/kernel into drm-next

2026-03-02T06:58:07+00:00

drm-misc-next for v7.1: UAPI Changes: connector: - Add panel_type property fourcc: - Add ARM interleaved 64k modifier nouveau: - Query Z-Cull info with DRM_IOCTL_NOUVEAU_GET_ZCULL_INFO Cross-subsystem Changes: coreboot: - Clean up coreboot framebuffer support dma-buf: - Provide revoke mechanism for shared buffers - Rename move_notify callback to invalidate_mappings and update users. - Always enable move_notify - Support dma_fence_was_initialized() test - Protect dma_fence_ops by RCU and improve locking - Fix sparse warnings Core Changes: atomic: - Allocate drm_private_state via callback and convert drivers atomic-helper: - Use system_percpu_wq buddy: - Make buddy allocator available to all DRM drivers - Document flags and structures colorop: - Add destroy helper and convert drivers fbdev-emulation: - Clean up gem: - Fix drm_gem_objects_lookup() error cleanup Driver Changes: amdgpu: - Set panel_type to OELD for eDP atmel-hlcdc: - Support sana5d65 LCD controller bridge: - anx7625: Support USB-C plus DT bindings - connector: Fix EDID detection - dw-hdmi-qp: Support Vendor-Specfic and SDP Infoframes; improve others - fsl-ldb: Fix visual artifacts plus related DT property 'enable-termination-resistor' - imx8qxp-pixel-link: Improve bridge reference handling - lt9611: Support Port-B-only input plus DT bindings - tda998x: Support DRM_BRIDGE_ATTACH_NO_CONNECTOR; Clean up - Support TH1520 HDMI plus DT bindings - Clean up imagination: - Clean up komeda: - Fix integer overflow in AFBC checks mcde: - Improve bridge handling nouveau: - Provide Z-cull info to user space - gsp: Support GA100 - Shutdown on PCI device shutdown - Clean up panel: - panel-jdi-lt070me05000: Use mipi-dsi multi functions - panel-edp: Support Add AUO B116XAT04.1 (HW: 1A); Support CMN N116BCL-EAK (C2); Support FriendlyELEC plus DT changes - Fix Kconfig dependencies panthor: - Add tracepoints for power and IRQs rcar-du: - dsi: fix VCLK calculation rockchip: - vop2: Use drm_ logging functions - Support DisplayPort on RK3576 sysfb: - corebootdrm: Support system framebuffer on coreboot firmware; detect orientation - Clean up pixel-format lookup sun4i: - Clean up tilcdc: - Use DT bindings scheme - Use managed DRM interfaces - Support DRM_BRIDGE_ATTACH_NO_CONNECTOR - Clean up a lot of obsolete code v3d: - Clean up vc4: - Use system_percpu_wq - Clean up verisilicon: - Support DC8200 plus DT bindings virtgpu: - Support PRIME imports with enabled 3D Signed-off-by: Dave Airlie From: Thomas Zimmermann Link: https://patch.msgid.link/20260226143615.GA47200@linux.fritz.box

drm/nouveau: Fetch zcull info from device

2026-02-24T14:04:55+00:00

This information will be exposed to userspace in the following commit. Add struct nvkm_gr_zcull_info, which serves as abstraction layer between the corresponding uAPI (added in a subsequent patch) and the firmware structure. Extend the existing get_ctxbufs callback to also fill in zcull info. ctxsw_size and ctxsw_align come from NV2080_CTRL_CMD_INTERNAL_STATIC_KGR_GET_CONTEXT_BUFFERS_INFO, which is already called by r570_gr_get_ctxbufs, while the rest of the zcull info comes from NV0080_CTRL_FIFO_GET_ENGINE_CONTEXT_PROPERTIES_ENGINE_ID_GRAPHICS_ZCULL. Adding a separate callback for zcull info would require us to either: 1) Call GET_CONTEXT_BUFFERS_INFO twice, once for each callback. This is a little slower and more verbose than calling it once. or 2) Fill out zcull_info partially in r570_gr_get_ctxbufs and partially in the new callback. Since we fill out only some of the info in each we now need to handle edge cases where one function is called but not the other as well as them being called in an arbitrary order. Because of this, it's simplest to combine them in a single call (get_ctxbufs_and_zcull_info), which avoids repeated rpc calls to the gpu without the complexity of handling partially complete states. Signed-off-by: Mel Henning Link: https://patch.msgid.link/20260219-zcull3-v3-1-dbe6a716f104@darkrefraction.com Signed-off-by: Danilo Krummrich

Merge drm/drm-next into drm-misc-next

2026-02-23T10:48:20+00:00

Let's merge 7.0-rc1 to start the new drm-misc-next window Signed-off-by: Maxime Ripard

Merge drm/drm-fixes into drm-misc-fixes

2026-02-23T09:09:45+00:00

7.0-rc1 was just released, let's merge it to kick the new release cycle. Signed-off-by: Maxime Ripard

Convert 'alloc_flex' family to use the new default GFP_KERNEL argument

2026-02-22T01:09:51+00:00

This is the exact same thing as the 'alloc_obj()' version, only much smaller because there are a lot fewer users of the *alloc_flex() interface. As with alloc_obj() version, this was done entirely with mindless brute force, using the same script, except using 'flex' in the pattern rather than 'objs*'. Signed-off-by: Linus Torvalds

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-22T01:09:51+00:00

This was done entirely with mindless brute force, using git grep -l '\

treewide: Replace kmalloc with kmalloc_obj for non-scalar types

2026-02-21T09:02:28+00:00

This is the result of running the Coccinelle script from scripts/coccinelle/api/kmalloc_objs.cocci. The script is designed to avoid scalar types (which need careful case-by-case checking), and instead replace kmalloc-family calls that allocate struct or union object instances: Single allocations: kmalloc(sizeof(TYPE), ...) are replaced with: kmalloc_obj(TYPE, ...) Array allocations: kmalloc_array(COUNT, sizeof(TYPE), ...) are replaced with: kmalloc_objs(TYPE, COUNT, ...) Flex array allocations: kmalloc(struct_size(PTR, FAM, COUNT), ...) are replaced with: kmalloc_flex(*PTR, FAM, COUNT, ...) (where TYPE may also be *VAR) The resulting allocations no longer return "void *", instead returning "TYPE *". Signed-off-by: Kees Cook

nouveau/gsp: drop WARN_ON in ACPI probes

2026-02-16T21:51:24+00:00

These WARN_ONs seem to trigger a lot, and we don't seem to have a plan to fix them, so just drop them, as they are most likely harmless. Cc: stable@vger.kernel.org Fixes: 176fdcbddfd2 ("drm/nouveau/gsp/r535: add support for booting GSP-RM") Signed-off-by: Dave Airlie Link: https://patch.msgid.link/20241121014601.229391-1-airlied@gmail.com Signed-off-by: Danilo Krummrich

drm/nouveau/gsp: add support for GA100

2026-02-14T04:05:40+00:00

GA100 is a compute-only variant of GA102 that boots GSP-RM like a Turing. Although architecturally like an Ampere, GA100 uses the same GSP-RM firmware files as Turing, and therefore must boot it like Turing does. In addition, as a compute-only part, GA100 has no display engine, no VBIOS, and no graphics (GR) engine. Since it doesn't have VBIOS, there is no FWSEC firmware, and so there is no FRTS region that needs to be reserved or initialized. Although Nouveau now supports GA100, there is currently no real support for this GPU with either Clover or Rusticl/NVK, as both require a 3D engine. This is in contrast with GH100, which does contain a GR engine and is supported. Also note that this patch partially reverts commit e8b3627bec35 ("nouveau: don't attempt fwsec on sb on newer platforms."), which added fwsec pointers to struct ga100_gsp erroneously. Signed-off-by: Timur Tabi Acked-by: John Hubbard Reviewed-by: Dave Airlie Signed-off-by: Dave Airlie Link: https://patch.msgid.link/20260209224036.3283326-1-ttabi@nvidia.com