From: Monk Liu Date: Tue, 24 Sep 2019 08:08:00 +0000 (+0800) Subject: drm/amdgpu: fix an UMC hw arbitrator bug(v3) X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=e7da754b00ee40af55e522f9dc478d8ed3a3ad3d;p=openwrt%2Fstaging%2Fblogic.git drm/amdgpu: fix an UMC hw arbitrator bug(v3) issue: the UMC6 h/w bug is that when MCLK is doing the switch in the middle of a page access being preempted by high priority client (e.g. DISPLAY) then UMC and the mclk switch would stuck there due to deadlock how: fixed by disabling auto PreChg for UMC to avoid high priority client preempting other client's access on the same page, thus the deadlock could be avoided v2: put the patch in callback of UMC6 v3: rename the callback to "init_registers" Signed-off-by: Monk Liu Reviewed-by: Alex Deucher Reviewed-by: Hawking Zhang Signed-off-by: Alex Deucher --- diff --git a/drivers/gpu/drm/amd/amdgpu/Makefile b/drivers/gpu/drm/amd/amdgpu/Makefile index c3cd2711ea40..508e93ce5126 100644 --- a/drivers/gpu/drm/amd/amdgpu/Makefile +++ b/drivers/gpu/drm/amd/amdgpu/Makefile @@ -84,7 +84,7 @@ amdgpu-y += \ # add UMC block amdgpu-y += \ - umc_v6_1.o + umc_v6_1.o umc_v6_0.o # add IH block amdgpu-y += \ diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_umc.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_umc.h index 3ec36d9e012a..c907b14c9be8 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_umc.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_umc.h @@ -63,6 +63,7 @@ struct amdgpu_umc_funcs { void (*enable_umc_index_mode)(struct amdgpu_device *adev, uint32_t umc_instance); void (*disable_umc_index_mode)(struct amdgpu_device *adev); + void (*init_registers)(struct amdgpu_device *adev); }; struct amdgpu_umc { diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c index b4451a58743c..7f6536c5e549 100644 --- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c @@ -51,6 +51,7 @@ #include "gfxhub_v1_1.h" #include "mmhub_v9_4.h" #include "umc_v6_1.h" +#include "umc_v6_0.h" #include "ivsrcid/vmc/irqsrcs_vmc_1_0.h" @@ -696,6 +697,9 @@ static void gmc_v9_0_set_gmc_funcs(struct amdgpu_device *adev) static void gmc_v9_0_set_umc_funcs(struct amdgpu_device *adev) { switch (adev->asic_type) { + case CHIP_VEGA10: + adev->umc.funcs = &umc_v6_0_funcs; + break; case CHIP_VEGA20: adev->umc.max_ras_err_cnt_per_query = UMC_V6_1_TOTAL_CHANNEL_NUM; adev->umc.channel_inst_num = UMC_V6_1_CHANNEL_INSTANCE_NUM; @@ -1303,6 +1307,9 @@ static int gmc_v9_0_gart_enable(struct amdgpu_device *adev) for (i = 0; i < adev->num_vmhubs; ++i) gmc_v9_0_flush_gpu_tlb(adev, 0, i, 0); + if (adev->umc.funcs && adev->umc.funcs->init_registers) + adev->umc.funcs->init_registers(adev); + DRM_INFO("PCIE GART of %uM enabled (table at 0x%016llX).\n", (unsigned)(adev->gmc.gart_size >> 20), (unsigned long long)amdgpu_bo_gpu_offset(adev->gart.bo)); diff --git a/drivers/gpu/drm/amd/amdgpu/umc_v6_0.c b/drivers/gpu/drm/amd/amdgpu/umc_v6_0.c new file mode 100644 index 000000000000..0d6b50528d76 --- /dev/null +++ b/drivers/gpu/drm/amd/amdgpu/umc_v6_0.c @@ -0,0 +1,37 @@ +/* + * Copyright 2019 Advanced Micro Devices, Inc. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + * + */ +#include "umc_v6_0.h" +#include "amdgpu.h" + +static void umc_v6_0_init_registers(struct amdgpu_device *adev) +{ + unsigned i,j; + + for (i = 0; i < 4; i++) + for (j = 0; j < 4; j++) + WREG32((i*0x100000 + 0x5010c + j*0x2000)/4, 0x1002); +} + +const struct amdgpu_umc_funcs umc_v6_0_funcs = { + .init_registers = umc_v6_0_init_registers, +}; diff --git a/drivers/gpu/drm/amd/amdgpu/umc_v6_0.h b/drivers/gpu/drm/amd/amdgpu/umc_v6_0.h new file mode 100644 index 000000000000..109f1a57a46e --- /dev/null +++ b/drivers/gpu/drm/amd/amdgpu/umc_v6_0.h @@ -0,0 +1,31 @@ +/* + * Copyright 2019 Advanced Micro Devices, Inc. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + * + */ +#ifndef __UMC_V6_0_H__ +#define __UMC_V6_0_H__ + +#include "soc15_common.h" +#include "amdgpu.h" + +extern const struct amdgpu_umc_funcs umc_v6_0_funcs; + +#endif