kernel/linux.git/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c, branch v6.1.168

drm/amdgpu: keep vga memory on MacBooks with switchable graphics

2026-03-25T10:02:57+00:00

[ Upstream commit 096bb75e13cc508d3915b7604e356bcb12b17766 ] On Intel MacBookPros with switchable graphics, when the iGPU is enabled, the address of VRAM gets put at 0 in the dGPU's virtual address space. This is non-standard and seems to cause issues with the cursor if it ends up at 0. We have the framework to reserve memory at 0 in the address space, so enable it here if the vram start address is 0. Reviewed-and-tested-by: Mario Kleiner Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/4302 Cc: stable@vger.kernel.org Cc: Mario Kleiner Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin

drm/amd: Drop special case for yellow carp without discovery

2026-03-25T10:02:57+00:00

[ Upstream commit 3ef07651a5756e7de65615e18eacbf8822c23016 ] `amdgpu_gmc_get_vbios_allocations` has a special case for how to bring up yellow carp when amdgpu discovery is turned off. As this ASIC ships with discovery turned on, it's generally dead code and worse it causes `adev->mman.keep_stolen_vga_memory` to not be initialized for yellow carp. Remove it. Signed-off-by: Mario Limonciello Reviewed-by: Alex Deucher Signed-off-by: Alex Deucher Stable-dep-of: 096bb75e13cc ("drm/amdgpu: keep vga memory on MacBooks with switchable graphics") Signed-off-by: Sasha Levin

drm/amdgpu: Remove GC HW IP 9.3.0 from noretry=1

2024-08-03T06:49:10+00:00

[ Upstream commit 1446226d32a45bb7c4f63195a59be8c08defe658 ] The following commit updated gmc->noretry from 0 to 1 for GC HW IP 9.3.0: commit 5f3854f1f4e2 ("drm/amdgpu: add more cases to noretry=1") This causes the device to hang when a page fault occurs, until the device is rebooted. Instead, revert back to gmc->noretry=0 so the device is still responsive. Fixes: 5f3854f1f4e2 ("drm/amdgpu: add more cases to noretry=1") Signed-off-by: Tim Van Patten Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin

drm/amdgpu: Fix with right return code '-EIO' in 'amdgpu_gmc_vram_checking()'

2024-02-05T20:12:59+00:00

[ Upstream commit fac4ebd79fed60e79cccafdad45a2bb8d3795044 ] The amdgpu_gmc_vram_checking() function in emulation checks whether all of the memory range of shared system memory could be accessed by GPU, from this aspect, -EIO is returned for error scenarios. Fixes the below: drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c:919 gmc_v6_0_hw_init() warn: missing error code? 'r' drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c:1103 gmc_v7_0_hw_init() warn: missing error code? 'r' drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c:1223 gmc_v8_0_hw_init() warn: missing error code? 'r' drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c:2344 gmc_v9_0_hw_init() warn: missing error code? 'r' Cc: Xiaojian Du Cc: Lijo Lazar Cc: Christian König Cc: Alex Deucher Signed-off-by: Srinivasan Shanmugam Suggested-by: Christian König Reviewed-by: Christian König Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin

drm/amdgpu: enable tmz by default for GC 11.0.1

2023-06-09T08:34:21+00:00

commit 663b930e24842f3d3bb79418bb5cd8d01b40c559 upstream. Add IP GC 11.0.1 in the list of target to have tmz enabled by default. Signed-off-by: Ikshwaku Chauhan Reviewed-by: Alex Deucher Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org # 6.1.x Signed-off-by: Greg Kroah-Hartman

drm/amdgpu: add tmz support for GC IP v11.0.4

2023-01-24T06:24:43+00:00

commit 2aecbe492a3c0bf4c21f78c099a6f6c205fab0c7 upstream. Add tmz support for GC 11.0.4. Signed-off-by: Tim Huang Reviewed-by: Alex Deucher Signed-off-by: Alex Deucher Cc: "Limonciello, Mario" Signed-off-by: Greg Kroah-Hartman

drm/amdgpu: add tmz support for GC 11.0.1

2023-01-24T06:24:43+00:00

commit 97074216917b4188f0af3e52cc5b3f2b277bbbca upstream. this patch to add tmz support for GC 11.0.1. Signed-off-by: Yifan Zhang Reviewed-by: Tim Huang Signed-off-by: Alex Deucher Cc: "Limonciello, Mario" Signed-off-by: Greg Kroah-Hartman

drm/amd/amdgpu: reserve vm invalidation engine for firmware

2022-11-21T21:43:13+00:00

If mes enabled, reserve VM invalidation engine 5 for firmware. Signed-off-by: Jack Xiao Reviewed-by: Christian König Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org # 6.0.x

drm/amdgpu: there is no vbios fb on devices with no display hw (v2)

2022-11-15T18:24:40+00:00

If we enable virtual display functionality on parts with no display hardware we can end up trying to check for and reserve the vbios FB area on devices where it doesn't exist. Check if display hardware is actually present on the hardware before trying to reserve the memory. v2: move the check into common code Acked-by: Evan Quan Signed-off-by: Alex Deucher

drm/amdgpu: remove switch from amdgpu_gmc_noretry_set

2022-09-29T13:43:41+00:00

Simplify the logic in amdgpu_gmc_noretry_set by getting rid of the switch. Also set noretry=1 as default for GFX 10.3.0 and greater since retry faults are not supported. Signed-off-by: Graham Sider Acked-by: Alex Deucher Reviewed-by: Felix Kuehling Signed-off-by: Alex Deucher