Re: [PATCH 14/32] drm/amdgpu: expose debug api for mes
On 2023-01-25 14:53, Jonathan Kim wrote: Similar to the F32 HWS, the RS64 HWS for GFX11 now supports a multi-process debug API. The skip_process_ctx_clear ADD_QUEUE requirement is to prevent the MES from clearing the process context when the first queue is added to the scheduler in order to maintain debug mode settings during queue preemption and restore. The MES clears the process context in this case due to an unresolved FW caching bug during normal mode operations. During debug mode, the KFD will hold a reference to the target process so the process context should never go stale and MES can afford to skip this requirement. Signed-off-by: Jonathan Kim Reviewed-by: Felix Kuehling --- drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c | 32 +++ drivers/gpu/drm/amd/amdgpu/amdgpu_mes.h | 20 drivers/gpu/drm/amd/amdgpu/mes_v11_0.c| 12 +++ drivers/gpu/drm/amd/include/mes_v11_api_def.h | 21 +++- 4 files changed, 84 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c index 82e27bd4f038..4916e0b0156f 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c @@ -924,6 +924,38 @@ int amdgpu_mes_reg_wait(struct amdgpu_device *adev, uint32_t reg, return r; } +int amdgpu_mes_set_shader_debugger(struct amdgpu_device *adev, + uint64_t process_context_addr, + uint32_t spi_gdbg_per_vmid_cntl, + const uint32_t *tcp_watch_cntl, + uint32_t flags) +{ + struct mes_misc_op_input op_input = {0}; + int r; + + if (!adev->mes.funcs->misc_op) { + DRM_ERROR("mes set shader debugger is not supported!\n"); + return -EINVAL; + } + + op_input.op = MES_MISC_OP_SET_SHADER_DEBUGGER; + op_input.set_shader_debugger.process_context_addr = process_context_addr; + op_input.set_shader_debugger.flags.u32all = flags; + op_input.set_shader_debugger.spi_gdbg_per_vmid_cntl = spi_gdbg_per_vmid_cntl; + memcpy(op_input.set_shader_debugger.tcp_watch_cntl, tcp_watch_cntl, + sizeof(op_input.set_shader_debugger.tcp_watch_cntl)); + + amdgpu_mes_lock(>mes); + + r = adev->mes.funcs->misc_op(>mes, _input); + if (r) + DRM_ERROR("failed to set_shader_debugger\n"); + + amdgpu_mes_unlock(>mes); + + return r; +} + static void amdgpu_mes_ring_to_queue_props(struct amdgpu_device *adev, struct amdgpu_ring *ring, diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.h index 547ec35691fa..d20df0cf0d88 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.h @@ -256,6 +256,7 @@ enum mes_misc_opcode { MES_MISC_OP_READ_REG, MES_MISC_OP_WRM_REG_WAIT, MES_MISC_OP_WRM_REG_WR_WAIT, + MES_MISC_OP_SET_SHADER_DEBUGGER, }; struct mes_misc_op_input { @@ -278,6 +279,20 @@ struct mes_misc_op_input { uint32_t reg0; uint32_t reg1; } wrm_reg; + + struct { + uint64_t process_context_addr; + union { + struct { + uint64_t single_memop : 1; + uint64_t single_alu_op : 1; + uint64_t reserved: 30; + }; + uint32_t u32all; + } flags; + uint32_t spi_gdbg_per_vmid_cntl; + uint32_t tcp_watch_cntl[4]; + } set_shader_debugger; }; }; @@ -340,6 +355,11 @@ int amdgpu_mes_reg_wait(struct amdgpu_device *adev, uint32_t reg, int amdgpu_mes_reg_write_reg_wait(struct amdgpu_device *adev, uint32_t reg0, uint32_t reg1, uint32_t ref, uint32_t mask); +int amdgpu_mes_set_shader_debugger(struct amdgpu_device *adev, + uint64_t process_context_addr, + uint32_t spi_gdbg_per_vmid_cntl, + const uint32_t *tcp_watch_cntl, + uint32_t flags); int amdgpu_mes_add_ring(struct amdgpu_device *adev, int gang_id, int queue_type, int idx, diff --git a/drivers/gpu/drm/amd/amdgpu/mes_v11_0.c b/drivers/gpu/drm/amd/amdgpu/mes_v11_0.c index 62cdd2113135..fbacdc42efac 100644 --- a/drivers/gpu/drm/amd/amdgpu/mes_v11_0.c +++ b/drivers/gpu/drm/amd/amdgpu/mes_v11_0.c @@ -334,6 +334,18 @@ static int mes_v11_0_misc_op(struct amdgpu_mes *mes,
[PATCH 14/32] drm/amdgpu: expose debug api for mes
Similar to the F32 HWS, the RS64 HWS for GFX11 now supports a multi-process debug API. The skip_process_ctx_clear ADD_QUEUE requirement is to prevent the MES from clearing the process context when the first queue is added to the scheduler in order to maintain debug mode settings during queue preemption and restore. The MES clears the process context in this case due to an unresolved FW caching bug during normal mode operations. During debug mode, the KFD will hold a reference to the target process so the process context should never go stale and MES can afford to skip this requirement. Signed-off-by: Jonathan Kim --- drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c | 32 +++ drivers/gpu/drm/amd/amdgpu/amdgpu_mes.h | 20 drivers/gpu/drm/amd/amdgpu/mes_v11_0.c| 12 +++ drivers/gpu/drm/amd/include/mes_v11_api_def.h | 21 +++- 4 files changed, 84 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c index 82e27bd4f038..4916e0b0156f 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c @@ -924,6 +924,38 @@ int amdgpu_mes_reg_wait(struct amdgpu_device *adev, uint32_t reg, return r; } +int amdgpu_mes_set_shader_debugger(struct amdgpu_device *adev, + uint64_t process_context_addr, + uint32_t spi_gdbg_per_vmid_cntl, + const uint32_t *tcp_watch_cntl, + uint32_t flags) +{ + struct mes_misc_op_input op_input = {0}; + int r; + + if (!adev->mes.funcs->misc_op) { + DRM_ERROR("mes set shader debugger is not supported!\n"); + return -EINVAL; + } + + op_input.op = MES_MISC_OP_SET_SHADER_DEBUGGER; + op_input.set_shader_debugger.process_context_addr = process_context_addr; + op_input.set_shader_debugger.flags.u32all = flags; + op_input.set_shader_debugger.spi_gdbg_per_vmid_cntl = spi_gdbg_per_vmid_cntl; + memcpy(op_input.set_shader_debugger.tcp_watch_cntl, tcp_watch_cntl, + sizeof(op_input.set_shader_debugger.tcp_watch_cntl)); + + amdgpu_mes_lock(>mes); + + r = adev->mes.funcs->misc_op(>mes, _input); + if (r) + DRM_ERROR("failed to set_shader_debugger\n"); + + amdgpu_mes_unlock(>mes); + + return r; +} + static void amdgpu_mes_ring_to_queue_props(struct amdgpu_device *adev, struct amdgpu_ring *ring, diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.h index 547ec35691fa..d20df0cf0d88 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.h @@ -256,6 +256,7 @@ enum mes_misc_opcode { MES_MISC_OP_READ_REG, MES_MISC_OP_WRM_REG_WAIT, MES_MISC_OP_WRM_REG_WR_WAIT, + MES_MISC_OP_SET_SHADER_DEBUGGER, }; struct mes_misc_op_input { @@ -278,6 +279,20 @@ struct mes_misc_op_input { uint32_t reg0; uint32_t reg1; } wrm_reg; + + struct { + uint64_t process_context_addr; + union { + struct { + uint64_t single_memop : 1; + uint64_t single_alu_op : 1; + uint64_t reserved: 30; + }; + uint32_t u32all; + } flags; + uint32_t spi_gdbg_per_vmid_cntl; + uint32_t tcp_watch_cntl[4]; + } set_shader_debugger; }; }; @@ -340,6 +355,11 @@ int amdgpu_mes_reg_wait(struct amdgpu_device *adev, uint32_t reg, int amdgpu_mes_reg_write_reg_wait(struct amdgpu_device *adev, uint32_t reg0, uint32_t reg1, uint32_t ref, uint32_t mask); +int amdgpu_mes_set_shader_debugger(struct amdgpu_device *adev, + uint64_t process_context_addr, + uint32_t spi_gdbg_per_vmid_cntl, + const uint32_t *tcp_watch_cntl, + uint32_t flags); int amdgpu_mes_add_ring(struct amdgpu_device *adev, int gang_id, int queue_type, int idx, diff --git a/drivers/gpu/drm/amd/amdgpu/mes_v11_0.c b/drivers/gpu/drm/amd/amdgpu/mes_v11_0.c index 62cdd2113135..fbacdc42efac 100644 --- a/drivers/gpu/drm/amd/amdgpu/mes_v11_0.c +++ b/drivers/gpu/drm/amd/amdgpu/mes_v11_0.c @@ -334,6 +334,18 @@ static int mes_v11_0_misc_op(struct amdgpu_mes *mes, misc_pkt.wait_reg_mem.reg_offset1 = input->wrm_reg.reg0; misc_pkt.wait_reg_mem.reg_offset2