linux-kernel - [PATCH 0/3] riscv: Add kernel-mode FPU support for amdgpu

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Message-ID: <20231122030621.3759313-1-samuel.holland@sifive.com>
Date:   Tue, 21 Nov 2023 19:05:12 -0800
From:   Samuel Holland <samuel.holland@...ive.com>
To:     Palmer Dabbelt <palmer@...belt.com>,
        Harry Wentland <harry.wentland@....com>,
        Leo Li <sunpeng.li@....com>,
        Rodrigo Siqueira <Rodrigo.Siqueira@....com>,
        linux-riscv@...ts.infradead.org
Cc:     linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        David Airlie <airlied@...il.com>,
        Christian König <christian.koenig@....com>,
        Alex Deucher <alexander.deucher@....com>,
        Pan Xinhui <Xinhui.Pan@....com>,
        Daniel Vetter <daniel@...ll.ch>, amd-gfx@...ts.freedesktop.org,
        Samuel Holland <samuel.holland@...ive.com>
Subject: [PATCH 0/3] riscv: Add kernel-mode FPU support for amdgpu

This series allows using newer AMD GPUs (e.g. Navi) on RISC-V boards
such as SiFive's HiFive Unmatched. Those GPUs need CONFIG_DRM_AMD_DC_FP
to initialize, which requires kernel-mode FPU support.

I'm sending these patches as one series so there is a user along with
the infrastructure being added. I assume patch 3 would be merged
separately, after patches 1-2 are merged.


Samuel Holland (3):
  riscv: Add support for kernel-mode FPU
  riscv: Factor out riscv-march-y to a separate Makefile
  drm/amd/display: Support DRM_AMD_DC_FP on RISC-V

 arch/riscv/Makefile                            | 12 +-----------
 arch/riscv/Makefile.isa                        | 15 +++++++++++++++
 arch/riscv/include/asm/switch_to.h             | 14 ++++++++++++++
 arch/riscv/kernel/process.c                    |  3 +++
 drivers/gpu/drm/amd/display/Kconfig            |  5 ++++-
 drivers/gpu/drm/amd/display/amdgpu_dm/dc_fpu.c |  6 ++++--
 drivers/gpu/drm/amd/display/dc/dml/Makefile    |  6 ++++++
 drivers/gpu/drm/amd/display/dc/dml2/Makefile   |  6 ++++++
 8 files changed, 53 insertions(+), 14 deletions(-)
 create mode 100644 arch/riscv/Makefile.isa

-- 
2.42.0