From: Alex Deucher Date: Sun, 14 Apr 2024 17:33:56 +0000 (-0400) Subject: drm/amdgpu: add set_reg_remap callback for NBIO 7.4 X-Git-Tag: io_uring-6.11-20240722~49^2~25^2~298 X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=9d0e2915c4c6815b222545a526fa599f58f498c7;p=linux-block.git drm/amdgpu: add set_reg_remap callback for NBIO 7.4 This will be used to consolidate the register remap offset configuration and fix HDP flushes on systems non-4K pages. Reviewed-by: Felix Kuehling Signed-off-by: Alex Deucher --- diff --git a/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c b/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c index 19986ff6a48d..b684eb519d2a 100644 --- a/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c +++ b/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c @@ -792,6 +792,21 @@ static void nbio_v7_4_program_aspm(struct amdgpu_device *adev) #endif } +#define MMIO_REG_HOLE_OFFSET (0x80000 - PAGE_SIZE) + +static void nbio_v7_4_set_reg_remap(struct amdgpu_device *adev) +{ + if (!amdgpu_sriov_vf(adev) && (PAGE_SIZE <= 4096)) { + adev->rmmio_remap.reg_offset = MMIO_REG_HOLE_OFFSET; + adev->rmmio_remap.bus_addr = adev->rmmio_base + MMIO_REG_HOLE_OFFSET; + } else { + adev->rmmio_remap.reg_offset = + SOC15_REG_OFFSET(NBIO, 0, + mmBIF_BX_DEV0_EPF0_VF0_HDP_MEM_COHERENCY_FLUSH_CNTL) << 2; + adev->rmmio_remap.bus_addr = 0; + } +} + const struct amdgpu_nbio_funcs nbio_v7_4_funcs = { .get_hdp_flush_req_offset = nbio_v7_4_get_hdp_flush_req_offset, .get_hdp_flush_done_offset = nbio_v7_4_get_hdp_flush_done_offset, @@ -813,4 +828,5 @@ const struct amdgpu_nbio_funcs nbio_v7_4_funcs = { .init_registers = nbio_v7_4_init_registers, .remap_hdp_registers = nbio_v7_4_remap_hdp_registers, .program_aspm = nbio_v7_4_program_aspm, + .set_reg_remap = nbio_v7_4_set_reg_remap, };