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 7.4
This will be used to consolidate the register remap offset
configuration and fix HDP flushes on systems non-4K pages.
Reviewed-by: Felix Kuehling <felix.kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
+16
+16
drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c
+16
drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c
···
792
792
#endif
793
793
}
794
794
795
+
#define MMIO_REG_HOLE_OFFSET (0x80000 - PAGE_SIZE)
796
+
797
+
static void nbio_v7_4_set_reg_remap(struct amdgpu_device *adev)
798
+
{
799
+
if (!amdgpu_sriov_vf(adev) && (PAGE_SIZE <= 4096)) {
800
+
adev->rmmio_remap.reg_offset = MMIO_REG_HOLE_OFFSET;
801
+
adev->rmmio_remap.bus_addr = adev->rmmio_base + MMIO_REG_HOLE_OFFSET;
802
+
} else {
803
+
adev->rmmio_remap.reg_offset =
804
+
SOC15_REG_OFFSET(NBIO, 0,
805
+
mmBIF_BX_DEV0_EPF0_VF0_HDP_MEM_COHERENCY_FLUSH_CNTL) << 2;
806
+
adev->rmmio_remap.bus_addr = 0;
807
+
}
808
+
}
809
+
795
810
const struct amdgpu_nbio_funcs nbio_v7_4_funcs = {
796
811
.get_hdp_flush_req_offset = nbio_v7_4_get_hdp_flush_req_offset,
797
812
.get_hdp_flush_done_offset = nbio_v7_4_get_hdp_flush_done_offset,
···
828
813
.init_registers = nbio_v7_4_init_registers,
829
814
.remap_hdp_registers = nbio_v7_4_remap_hdp_registers,
830
815
.program_aspm = nbio_v7_4_program_aspm,
816
+
.set_reg_remap = nbio_v7_4_set_reg_remap,
831
817
};