[PATCH v2 1/1] drm/amdgpu: Fix MMIO HDP flush on SRIOV
Lazar, Lijo
lijo.lazar at amd.com
Wed Nov 10 09:14:09 UTC 2021
On 11/10/2021 8:00 AM, Felix Kuehling wrote:
> Disable HDP register remapping on SRIOV and set rmmio_remap.reg_offset
> to the fixed address of the VF register for hdp_v*_flush_hdp.
>
> Signed-off-by: Felix Kuehling <Felix.Kuehling at amd.com>
> ---
> drivers/gpu/drm/amd/amdgpu/nbio_v2_3.c | 4 ++++
> drivers/gpu/drm/amd/amdgpu/nbio_v6_1.c | 4 ++++
> drivers/gpu/drm/amd/amdgpu/nbio_v7_0.c | 4 +++-
> drivers/gpu/drm/amd/amdgpu/nbio_v7_2.c | 4 ++++
> drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c | 4 +++-
> drivers/gpu/drm/amd/amdgpu/nv.c | 8 +++++---
> drivers/gpu/drm/amd/amdgpu/soc15.c | 8 +++++---
> 7 files changed, 28 insertions(+), 8 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/nbio_v2_3.c b/drivers/gpu/drm/amd/amdgpu/nbio_v2_3.c
> index 4ecd2b5808ce..ee7cab37dfd5 100644
> --- a/drivers/gpu/drm/amd/amdgpu/nbio_v2_3.c
> +++ b/drivers/gpu/drm/amd/amdgpu/nbio_v2_3.c
> @@ -359,6 +359,10 @@ static void nbio_v2_3_init_registers(struct amdgpu_device *adev)
>
> if (def != data)
> WREG32_PCIE(smnPCIE_CONFIG_CNTL, data);
> +
> + if (amdgpu_sriov_vf(adev))
> + adev->rmmio_remap.reg_offset = SOC15_REG_OFFSET(NBIO, 0,
> + mmBIF_BX_DEV0_EPF0_VF0_HDP_MEM_COHERENCY_FLUSH_CNTL) << 2;
Wouldn't it be better to do this assignment inside
remap_hdp_registers()? Return with a comment saying no remap is done for
VFs. That looks easier to manage per IP version.
Thanks,
Lijo
> }
>
> #define NAVI10_PCIE__LC_L0S_INACTIVITY_DEFAULT 0x00000000 // off by default, no gains over L1
> diff --git a/drivers/gpu/drm/amd/amdgpu/nbio_v6_1.c b/drivers/gpu/drm/amd/amdgpu/nbio_v6_1.c
> index 0d2d629e2d6a..4bbacf1be25a 100644
> --- a/drivers/gpu/drm/amd/amdgpu/nbio_v6_1.c
> +++ b/drivers/gpu/drm/amd/amdgpu/nbio_v6_1.c
> @@ -276,6 +276,10 @@ static void nbio_v6_1_init_registers(struct amdgpu_device *adev)
>
> if (def != data)
> WREG32_PCIE(smnPCIE_CI_CNTL, data);
> +
> + if (amdgpu_sriov_vf(adev))
> + adev->rmmio_remap.reg_offset = SOC15_REG_OFFSET(NBIO, 0,
> + mmBIF_BX_DEV0_EPF0_VF0_HDP_MEM_COHERENCY_FLUSH_CNTL) << 2;
> }
>
> static void nbio_v6_1_program_ltr(struct amdgpu_device *adev)
> diff --git a/drivers/gpu/drm/amd/amdgpu/nbio_v7_0.c b/drivers/gpu/drm/amd/amdgpu/nbio_v7_0.c
> index 3c00666a13e1..37a4039fdfc5 100644
> --- a/drivers/gpu/drm/amd/amdgpu/nbio_v7_0.c
> +++ b/drivers/gpu/drm/amd/amdgpu/nbio_v7_0.c
> @@ -273,7 +273,9 @@ const struct nbio_hdp_flush_reg nbio_v7_0_hdp_flush_reg = {
>
> static void nbio_v7_0_init_registers(struct amdgpu_device *adev)
> {
> -
> + if (amdgpu_sriov_vf(adev))
> + adev->rmmio_remap.reg_offset =
> + SOC15_REG_OFFSET(NBIO, 0, mmHDP_MEM_COHERENCY_FLUSH_CNTL) << 2;
> }
>
> const struct amdgpu_nbio_funcs nbio_v7_0_funcs = {
> diff --git a/drivers/gpu/drm/amd/amdgpu/nbio_v7_2.c b/drivers/gpu/drm/amd/amdgpu/nbio_v7_2.c
> index 8f2a315e7c73..3444332ea110 100644
> --- a/drivers/gpu/drm/amd/amdgpu/nbio_v7_2.c
> +++ b/drivers/gpu/drm/amd/amdgpu/nbio_v7_2.c
> @@ -371,6 +371,10 @@ static void nbio_v7_2_init_registers(struct amdgpu_device *adev)
> if (def != data)
> WREG32_PCIE_PORT(SOC15_REG_OFFSET(NBIO, 0, regPCIE_CONFIG_CNTL), data);
> }
> +
> + if (amdgpu_sriov_vf(adev))
> + adev->rmmio_remap.reg_offset = SOC15_REG_OFFSET(NBIO, 0,
> + regBIF_BX_PF0_HDP_MEM_COHERENCY_FLUSH_CNTL) << 2;
> }
>
> const struct amdgpu_nbio_funcs nbio_v7_2_funcs = {
> diff --git a/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c b/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c
> index b8bd03d16dba..e96516d3fd45 100644
> --- a/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c
> +++ b/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c
> @@ -362,7 +362,9 @@ const struct nbio_hdp_flush_reg nbio_v7_4_hdp_flush_reg_ald = {
>
> static void nbio_v7_4_init_registers(struct amdgpu_device *adev)
> {
> -
> + if (amdgpu_sriov_vf(adev))
> + adev->rmmio_remap.reg_offset = SOC15_REG_OFFSET(NBIO, 0,
> + mmBIF_BX_DEV0_EPF0_VF0_HDP_MEM_COHERENCY_FLUSH_CNTL) << 2;
> }
>
> static void nbio_v7_4_handle_ras_controller_intr_no_bifring(struct amdgpu_device *adev)
> diff --git a/drivers/gpu/drm/amd/amdgpu/nv.c b/drivers/gpu/drm/amd/amdgpu/nv.c
> index febc903adf58..7088528079c6 100644
> --- a/drivers/gpu/drm/amd/amdgpu/nv.c
> +++ b/drivers/gpu/drm/amd/amdgpu/nv.c
> @@ -730,8 +730,10 @@ static int nv_common_early_init(void *handle)
> #define MMIO_REG_HOLE_OFFSET (0x80000 - PAGE_SIZE)
> struct amdgpu_device *adev = (struct amdgpu_device *)handle;
>
> - adev->rmmio_remap.reg_offset = MMIO_REG_HOLE_OFFSET;
> - adev->rmmio_remap.bus_addr = adev->rmmio_base + MMIO_REG_HOLE_OFFSET;
> + if (!amdgpu_sriov_vf(adev)) {
> + adev->rmmio_remap.reg_offset = MMIO_REG_HOLE_OFFSET;
> + adev->rmmio_remap.bus_addr = adev->rmmio_base + MMIO_REG_HOLE_OFFSET;
> + }
> adev->smc_rreg = NULL;
> adev->smc_wreg = NULL;
> adev->pcie_rreg = &nv_pcie_rreg;
> @@ -1031,7 +1033,7 @@ static int nv_common_hw_init(void *handle)
> * for the purpose of expose those registers
> * to process space
> */
> - if (adev->nbio.funcs->remap_hdp_registers)
> + if (adev->nbio.funcs->remap_hdp_registers && !amdgpu_sriov_vf(adev))
> adev->nbio.funcs->remap_hdp_registers(adev);
> /* enable the doorbell aperture */
> nv_enable_doorbell_aperture(adev, true);
> diff --git a/drivers/gpu/drm/amd/amdgpu/soc15.c b/drivers/gpu/drm/amd/amdgpu/soc15.c
> index 0c316a2d42ed..de9b55383e9f 100644
> --- a/drivers/gpu/drm/amd/amdgpu/soc15.c
> +++ b/drivers/gpu/drm/amd/amdgpu/soc15.c
> @@ -971,8 +971,10 @@ static int soc15_common_early_init(void *handle)
> #define MMIO_REG_HOLE_OFFSET (0x80000 - PAGE_SIZE)
> struct amdgpu_device *adev = (struct amdgpu_device *)handle;
>
> - adev->rmmio_remap.reg_offset = MMIO_REG_HOLE_OFFSET;
> - adev->rmmio_remap.bus_addr = adev->rmmio_base + MMIO_REG_HOLE_OFFSET;
> + if (!amdgpu_sriov_vf(adev)) {
> + adev->rmmio_remap.reg_offset = MMIO_REG_HOLE_OFFSET;
> + adev->rmmio_remap.bus_addr = adev->rmmio_base + MMIO_REG_HOLE_OFFSET;
> + }
> adev->smc_rreg = NULL;
> adev->smc_wreg = NULL;
> adev->pcie_rreg = &soc15_pcie_rreg;
> @@ -1285,7 +1287,7 @@ static int soc15_common_hw_init(void *handle)
> * for the purpose of expose those registers
> * to process space
> */
> - if (adev->nbio.funcs->remap_hdp_registers)
> + if (adev->nbio.funcs->remap_hdp_registers && !amdgpu_sriov_vf(adev))
> adev->nbio.funcs->remap_hdp_registers(adev);
>
> /* enable the doorbell aperture */
>
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