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 2.3
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>
+15
+15
drivers/gpu/drm/amd/amdgpu/nbio_v2_3.c
+15
drivers/gpu/drm/amd/amdgpu/nbio_v2_3.c
···
553
553
}
554
554
}
555
555
556
+
#define MMIO_REG_HOLE_OFFSET (0x80000 - PAGE_SIZE)
557
+
558
+
static void nbio_v2_3_set_reg_remap(struct amdgpu_device *adev)
559
+
{
560
+
if (!amdgpu_sriov_vf(adev) && (PAGE_SIZE <= 4096)) {
561
+
adev->rmmio_remap.reg_offset = MMIO_REG_HOLE_OFFSET;
562
+
adev->rmmio_remap.bus_addr = adev->rmmio_base + MMIO_REG_HOLE_OFFSET;
563
+
} else {
564
+
adev->rmmio_remap.reg_offset = SOC15_REG_OFFSET(NBIO, 0,
565
+
mmBIF_BX_DEV0_EPF0_VF0_HDP_MEM_COHERENCY_FLUSH_CNTL) << 2;
566
+
adev->rmmio_remap.bus_addr = 0;
567
+
}
568
+
}
569
+
556
570
const struct amdgpu_nbio_funcs nbio_v2_3_funcs = {
557
571
.get_hdp_flush_req_offset = nbio_v2_3_get_hdp_flush_req_offset,
558
572
.get_hdp_flush_done_offset = nbio_v2_3_get_hdp_flush_done_offset,
···
591
577
.apply_lc_spc_mode_wa = nbio_v2_3_apply_lc_spc_mode_wa,
592
578
.apply_l1_link_width_reconfig_wa = nbio_v2_3_apply_l1_link_width_reconfig_wa,
593
579
.clear_doorbell_interrupt = nbio_v2_3_clear_doorbell_interrupt,
580
+
.set_reg_remap = nbio_v2_3_set_reg_remap,
594
581
};