Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
drm/amdgpu: add set_reg_remap callback for NBIO 7.2
This will be used to consolidate the register remap offset
configuration and fix HDP flushes on systems non-4K pages.
Reviewed-by: Felix Kuehling <felix.kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
+16
+16
drivers/gpu/drm/amd/amdgpu/nbio_v7_2.c
+16
drivers/gpu/drm/amd/amdgpu/nbio_v7_2.c
···
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regBIF_BX_PF0_HDP_MEM_COHERENCY_FLUSH_CNTL) << 2;
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}
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+
#define MMIO_REG_HOLE_OFFSET (0x80000 - PAGE_SIZE)
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+
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static void nbio_v7_2_set_reg_remap(struct amdgpu_device *adev)
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+
{
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if (!amdgpu_sriov_vf(adev) && (PAGE_SIZE <= 4096)) {
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adev->rmmio_remap.reg_offset = MMIO_REG_HOLE_OFFSET;
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+
adev->rmmio_remap.bus_addr = adev->rmmio_base + MMIO_REG_HOLE_OFFSET;
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} else {
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adev->rmmio_remap.reg_offset =
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SOC15_REG_OFFSET(NBIO, 0,
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regBIF_BX_PF0_HDP_MEM_COHERENCY_FLUSH_CNTL) << 2;
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adev->rmmio_remap.bus_addr = 0;
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}
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}
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+
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const struct amdgpu_nbio_funcs nbio_v7_2_funcs = {
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.get_hdp_flush_req_offset = nbio_v7_2_get_hdp_flush_req_offset,
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.get_hdp_flush_done_offset = nbio_v7_2_get_hdp_flush_done_offset,
···
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.ih_control = nbio_v7_2_ih_control,
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.init_registers = nbio_v7_2_init_registers,
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.remap_hdp_registers = nbio_v7_2_remap_hdp_registers,
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+
.set_reg_remap = nbio_v7_2_set_reg_remap,
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};