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| author | Leo (Hanghong) Ma <hanghong.ma@amd.com> | 2021-02-19 16:22:58 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2021-04-09 16:40:43 -0400 |
| commit | a08f16cfe8dc7402228840d9ef857d6253bba9ee (patch) | |
| tree | 5dff85a46025f70cfb1c2d74b38019a801c21867 /drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | |
| parent | 234cc26f7dd15761dcd2ef818b9acaf4fe9cf92e (diff) | |
| download | lwn-a08f16cfe8dc7402228840d9ef857d6253bba9ee.tar.gz lwn-a08f16cfe8dc7402228840d9ef857d6253bba9ee.zip | |
drm/amd/display: Log DMCUB trace buffer events
[Why]
We want to log DMCUB trace buffer events as Linux kernel traces.
[How]
Register an IRQ handler for DMCUB outbox0 interrupt in amdgpu_dm,
and log the messages in the DMCUB tracebuffer to a new DMCUB
TRACE_EVENT as soon as we receive the outbox0 IRQ from DMCUB FW.
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Leo (Hanghong) Ma <hanghong.ma@amd.com>
Reviewed-by: Harry Wentland <Harry.Wentland@amd.com>
Acked-by: Solomon Chiu <solomon.chiu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c index 00edf78975b1..66a5b6b4e827 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -922,6 +922,32 @@ static int dm_dmub_hw_init(struct amdgpu_device *adev) return 0; } +#define DMUB_TRACE_MAX_READ 64 +static void dm_dmub_trace_high_irq(void *interrupt_params) +{ + struct common_irq_params *irq_params = interrupt_params; + struct amdgpu_device *adev = irq_params->adev; + struct amdgpu_display_manager *dm = &adev->dm; + struct dmcub_trace_buf_entry entry = { 0 }; + uint32_t count = 0; + + do { + if (dc_dmub_srv_get_dmub_outbox0_msg(dm->dc, &entry)) { + trace_amdgpu_dmub_trace_high_irq(entry.trace_code, entry.tick_count, + entry.param0, entry.param1); + + DRM_DEBUG_DRIVER("trace_code:%u, tick_count:%u, param0:%u, param1:%u\n", + entry.trace_code, entry.tick_count, entry.param0, entry.param1); + } else + break; + + count++; + + } while (count <= DMUB_TRACE_MAX_READ); + + ASSERT(count <= DMUB_TRACE_MAX_READ); +} + #if defined(CONFIG_DRM_AMD_DC_DCN) static void mmhub_read_system_context(struct amdgpu_device *adev, struct dc_phy_addr_space_config *pa_config) { @@ -3104,6 +3130,28 @@ static int dcn10_register_irq_handlers(struct amdgpu_device *adev) } + if (dc->ctx->dmub_srv) { + i = DCN_1_0__SRCID__DMCUB_OUTBOX_HIGH_PRIORITY_READY_INT; + r = amdgpu_irq_add_id(adev, SOC15_IH_CLIENTID_DCE, i, &adev->dmub_trace_irq); + + if (r) { + DRM_ERROR("Failed to add dmub trace irq id!\n"); + return r; + } + + int_params.int_context = INTERRUPT_HIGH_IRQ_CONTEXT; + int_params.irq_source = + dc_interrupt_to_irq_source(dc, i, 0); + + c_irq_params = &adev->dm.dmub_trace_params[0]; + + c_irq_params->adev = adev; + c_irq_params->irq_src = int_params.irq_source; + + amdgpu_dm_irq_register_interrupt(adev, &int_params, + dm_dmub_trace_high_irq, c_irq_params); + } + /* HPD */ r = amdgpu_irq_add_id(adev, SOC15_IH_CLIENTID_DCE, DCN_1_0__SRCID__DC_HPD1_INT, &adev->hpd_irq); |