Am 22.10.18 um 20:41 schrieb Zhao, Yong:
> Change-Id: I3dcd71955297c53b181f82e7078981230c642c01
> Signed-off-by: Yong Zhao <yong.z...@amd.com>
> ---
> drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c | 64
> ++++++++++++++++++++---------------
> drivers/gpu/drm/amd/amdgpu/gmc_v9_0.h | 3 ++
> 2 files changed, 40 insertions(+), 27 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
> b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
> index f35d7a5..6f96545 100644
> --- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
> +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
> @@ -293,14 +293,15 @@ static void gmc_v9_0_set_irq_funcs(struct amdgpu_device
> *adev)
> adev->gmc.vm_fault.funcs = &gmc_v9_0_irq_funcs;
> }
>
> -static uint32_t gmc_v9_0_get_invalidate_req(unsigned int vmid)
> +static uint32_t gmc_v9_0_get_invalidate_req(unsigned int vmid,
> + uint32_t flush_type)
> {
> u32 req = 0;
>
> /* invalidate using legacy mode on vmid*/
> req = REG_SET_FIELD(req, VM_INVALIDATE_ENG0_REQ,
> PER_VMID_INVALIDATE_REQ, 1 << vmid);
> - req = REG_SET_FIELD(req, VM_INVALIDATE_ENG0_REQ, FLUSH_TYPE, 0);
> + req = REG_SET_FIELD(req, VM_INVALIDATE_ENG0_REQ, FLUSH_TYPE,
> flush_type);
> req = REG_SET_FIELD(req, VM_INVALIDATE_ENG0_REQ, INVALIDATE_L2_PTES, 1);
> req = REG_SET_FIELD(req, VM_INVALIDATE_ENG0_REQ, INVALIDATE_L2_PDE0, 1);
> req = REG_SET_FIELD(req, VM_INVALIDATE_ENG0_REQ, INVALIDATE_L2_PDE1, 1);
> @@ -354,32 +355,15 @@ static signed long
> amdgpu_kiq_reg_write_reg_wait(struct amdgpu_device *adev,
> return r;
> }
>
> -/*
> - * GART
> - * VMID 0 is the physical GPU addresses as used by the kernel.
> - * VMIDs 1-15 are used for userspace clients and are handled
> - * by the amdgpu vm/hsa code.
> - */
> -
> -/**
> - * gmc_v9_0_flush_gpu_tlb - gart tlb flush callback
> - *
> - * @adev: amdgpu_device pointer
> - * @vmid: vm instance to flush
> - *
> - * Flush the TLB for the requested page table.
> - */
> -static void gmc_v9_0_flush_gpu_tlb(struct amdgpu_device *adev,
> - uint32_t vmid)
> +void gmc_v9_0_flush_gpu_tlb_helper(struct amdgpu_device *adev, uint32_t vmid,
> + uint32_t flush_type, uint32_t eng, bool lock)
This one needs kernel documentation and a better name would be nice.
In general sounds like a nice cleanup, but I exposing ASIC specific
functions is not necessarily a good idea.
We should probably move the ASIC specific KFD code into this file instead.
Christian.
> {
> - /* Use register 17 for GART */
> - const unsigned eng = 17;
> unsigned i, j;
> int r;
>
> for (i = 0; i < AMDGPU_MAX_VMHUBS; ++i) {
> struct amdgpu_vmhub *hub = &adev->vmhub[i];
> - u32 tmp = gmc_v9_0_get_invalidate_req(vmid);
> + u32 tmp = gmc_v9_0_get_invalidate_req(vmid, flush_type);
>
> if (adev->gfx.kiq.ring.ready &&
> (amdgpu_sriov_runtime(adev) || !amdgpu_sriov_vf(adev)) &&
> @@ -390,7 +374,8 @@ static void gmc_v9_0_flush_gpu_tlb(struct amdgpu_device
> *adev,
> continue;
> }
>
> - spin_lock(&adev->gmc.invalidate_lock);
> + if (lock)
> + spin_lock(&adev->gmc.invalidate_lock);
>
> WREG32_NO_KIQ(hub->vm_inv_eng0_req + eng, tmp);
>
> @@ -403,7 +388,8 @@ static void gmc_v9_0_flush_gpu_tlb(struct amdgpu_device
> *adev,
> cpu_relax();
> }
> if (j < 100) {
> - spin_unlock(&adev->gmc.invalidate_lock);
> + if (lock)
> + spin_unlock(&adev->gmc.invalidate_lock);
> continue;
> }
>
> @@ -416,20 +402,44 @@ static void gmc_v9_0_flush_gpu_tlb(struct amdgpu_device
> *adev,
> udelay(1);
> }
> if (j < adev->usec_timeout) {
> - spin_unlock(&adev->gmc.invalidate_lock);
> + if (lock)
> + spin_unlock(&adev->gmc.invalidate_lock);
> continue;
> }
> - spin_unlock(&adev->gmc.invalidate_lock);
> + if (lock)
> + spin_unlock(&adev->gmc.invalidate_lock);
> DRM_ERROR("Timeout waiting for VM flush ACK!\n");
> }
> }
>
> +/*
> + * GART
> + * VMID 0 is the physical GPU addresses as used by the kernel.
> + * VMIDs 1-15 are used for userspace clients and are handled
> + * by the amdgpu vm/hsa code.
> + */
> +
> +/**
> + * gmc_v9_0_flush_gpu_tlb - gart tlb flush callback
> + *
> + * @adev: amdgpu_device pointer
> + * @vmid: vm instance to flush
> + *
> + * Flush the TLB for the requested page table.
> + */
> +static void gmc_v9_0_flush_gpu_tlb(struct amdgpu_device *adev,
> + uint32_t vmid)
> +{
> + /* Use engine 17 for amdgpu */
> + gmc_v9_0_flush_gpu_tlb_helper(adev, vmid, 0, 17, true);
> +}
> +
> static uint64_t gmc_v9_0_emit_flush_gpu_tlb(struct amdgpu_ring *ring,
> unsigned vmid, uint64_t pd_addr)
> {
> struct amdgpu_device *adev = ring->adev;
> struct amdgpu_vmhub *hub = &adev->vmhub[ring->funcs->vmhub];
> - uint32_t req = gmc_v9_0_get_invalidate_req(vmid);
> + uint32_t req = gmc_v9_0_get_invalidate_req(vmid, 0);
> unsigned eng = ring->vm_inv_eng;
>
> amdgpu_ring_emit_wreg(ring, hub->ctx0_ptb_addr_lo32 + (2 * vmid),
> diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.h
> b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.h
> index 1fd178a6..56f504a 100644
> --- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.h
> +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.h
> @@ -33,4 +33,7 @@ void gfxhub_v1_0_setup_vm_pt_regs(struct amdgpu_device
> *adev, uint32_t vmid,
> void mmhub_v1_0_setup_vm_pt_regs(struct amdgpu_device *adev, uint32_t vmid,
> uint64_t page_table_base);
>
> +void gmc_v9_0_flush_gpu_tlb_helper(struct amdgpu_device *adev, uint32_t vmid,
> + uint32_t flush_type, uint32_t eng, bool lock);
> +
> #endif
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