From d636951ec01bcb2b7dee02f75ff4815714785a53 Mon Sep 17 00:00:00 2001 From: Ben Widawsky Date: Tue, 20 Sep 2016 16:54:32 +0300 Subject: [PATCH] drm/i915: Cleanup instdone collection Consolidate the instdone logic so we can get a bit fancier. This patch also removes the duplicated print of INSTDONE[0]. v2: (Imre) - Rebased on top of hangcheck INSTDONE changes. - Move all INSTDONE registers into a single struct, store it within the engine error struct during error capturing. Signed-off-by: Ben Widawsky Signed-off-by: Imre Deak Reviewed-by: Mika Kuoppala Link: http://patchwork.freedesktop.org/patch/msgid/1474379673-28326-1-git-send-email-imre.deak@intel.com --- drivers/gpu/drm/i915/i915_debugfs.c | 41 ++++++++---- drivers/gpu/drm/i915/i915_drv.h | 8 ++- drivers/gpu/drm/i915/i915_gpu_error.c | 84 ++++++++++++++++++------- drivers/gpu/drm/i915/i915_irq.c | 69 +++++++++++++------- drivers/gpu/drm/i915/i915_reg.h | 1 - drivers/gpu/drm/i915/intel_ringbuffer.h | 10 ++- 6 files changed, 151 insertions(+), 62 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c index a6d174ac6652..ba155c038d0e 100644 --- a/drivers/gpu/drm/i915/i915_debugfs.c +++ b/drivers/gpu/drm/i915/i915_debugfs.c @@ -1277,15 +1277,36 @@ out: return ret; } +static void i915_instdone_info(struct drm_i915_private *dev_priv, + struct seq_file *m, + struct intel_instdone *instdone) +{ + seq_printf(m, "\t\tINSTDONE: 0x%08x\n", + instdone->instdone); + + if (INTEL_GEN(dev_priv) <= 3) + return; + + seq_printf(m, "\t\tSC_INSTDONE: 0x%08x\n", + instdone->slice_common); + + if (INTEL_GEN(dev_priv) <= 6) + return; + + seq_printf(m, "\t\tSAMPLER_INSTDONE: 0x%08x\n", + instdone->sampler); + seq_printf(m, "\t\tROW_INSTDONE: 0x%08x\n", + instdone->row); +} + static int i915_hangcheck_info(struct seq_file *m, void *unused) { struct drm_i915_private *dev_priv = node_to_i915(m->private); struct intel_engine_cs *engine; u64 acthd[I915_NUM_ENGINES]; u32 seqno[I915_NUM_ENGINES]; - u32 instdone[I915_NUM_INSTDONE_REG]; + struct intel_instdone instdone; enum intel_engine_id id; - int j; if (test_bit(I915_WEDGED, &dev_priv->gpu_error.flags)) seq_printf(m, "Wedged\n"); @@ -1308,7 +1329,7 @@ static int i915_hangcheck_info(struct seq_file *m, void *unused) seqno[id] = intel_engine_get_seqno(engine); } - i915_get_extra_instdone(dev_priv, instdone); + i915_get_engine_instdone(dev_priv, RCS, &instdone); intel_runtime_pm_put(dev_priv); @@ -1336,18 +1357,14 @@ static int i915_hangcheck_info(struct seq_file *m, void *unused) seq_printf(m, "\taction = %d\n", engine->hangcheck.action); if (engine->id == RCS) { - seq_puts(m, "\tinstdone read ="); - - for (j = 0; j < I915_NUM_INSTDONE_REG; j++) - seq_printf(m, " 0x%08x", instdone[j]); + seq_puts(m, "\tinstdone read =\n"); - seq_puts(m, "\n\tinstdone accu ="); + i915_instdone_info(dev_priv, m, &instdone); - for (j = 0; j < I915_NUM_INSTDONE_REG; j++) - seq_printf(m, " 0x%08x", - engine->hangcheck.instdone[j]); + seq_puts(m, "\tinstdone accu =\n"); - seq_puts(m, "\n"); + i915_instdone_info(dev_priv, m, + &engine->hangcheck.instdone); } } diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 4dd307ed4336..356899543d4b 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -759,7 +759,7 @@ struct drm_i915_error_state { u32 gam_ecochk; u32 gab_ctl; u32 gfx_mode; - u32 extra_instdone[I915_NUM_INSTDONE_REG]; + u64 fence[I915_MAX_NUM_FENCES]; struct intel_overlay_error_state *overlay; struct intel_display_error_state *display; @@ -791,7 +791,6 @@ struct drm_i915_error_state { u32 hws; u32 ipeir; u32 ipehr; - u32 instdone; u32 bbstate; u32 instpm; u32 instps; @@ -802,6 +801,7 @@ struct drm_i915_error_state { u64 faddr; u32 rc_psmi; /* sleep state */ u32 semaphore_mboxes[I915_NUM_ENGINES - 1]; + struct intel_instdone instdone; struct drm_i915_error_object { int page_count; @@ -3542,7 +3542,9 @@ void i915_error_state_get(struct drm_device *dev, void i915_error_state_put(struct i915_error_state_file_priv *error_priv); void i915_destroy_error_state(struct drm_device *dev); -void i915_get_extra_instdone(struct drm_i915_private *dev_priv, uint32_t *instdone); +void i915_get_engine_instdone(struct drm_i915_private *dev_priv, + enum intel_engine_id engine_id, + struct intel_instdone *instdone); const char *i915_cache_level_str(struct drm_i915_private *i915, int type); /* i915_cmd_parser.c */ diff --git a/drivers/gpu/drm/i915/i915_gpu_error.c b/drivers/gpu/drm/i915/i915_gpu_error.c index 334f15df7c8d..6a2775aad354 100644 --- a/drivers/gpu/drm/i915/i915_gpu_error.c +++ b/drivers/gpu/drm/i915/i915_gpu_error.c @@ -228,6 +228,27 @@ static const char *hangcheck_action_to_str(enum intel_engine_hangcheck_action a) return "unknown"; } +static void error_print_instdone(struct drm_i915_error_state_buf *m, + struct drm_i915_error_engine *ee) +{ + err_printf(m, " INSTDONE: 0x%08x\n", + ee->instdone.instdone); + + if (ee->engine_id != RCS || INTEL_GEN(m->i915) <= 3) + return; + + err_printf(m, " SC_INSTDONE: 0x%08x\n", + ee->instdone.slice_common); + + if (INTEL_GEN(m->i915) <= 6) + return; + + err_printf(m, " SAMPLER_INSTDONE: 0x%08x\n", + ee->instdone.sampler); + err_printf(m, " ROW_INSTDONE: 0x%08x\n", + ee->instdone.row); +} + static void error_print_engine(struct drm_i915_error_state_buf *m, struct drm_i915_error_engine *ee) { @@ -242,7 +263,9 @@ static void error_print_engine(struct drm_i915_error_state_buf *m, (u32)(ee->acthd>>32), (u32)ee->acthd); err_printf(m, " IPEIR: 0x%08x\n", ee->ipeir); err_printf(m, " IPEHR: 0x%08x\n", ee->ipehr); - err_printf(m, " INSTDONE: 0x%08x\n", ee->instdone); + + error_print_instdone(m, ee); + if (ee->batchbuffer) { u64 start = ee->batchbuffer->gtt_offset; u64 end = start + ee->batchbuffer->gtt_size; @@ -402,10 +425,6 @@ int i915_error_state_to_str(struct drm_i915_error_state_buf *m, for (i = 0; i < dev_priv->num_fence_regs; i++) err_printf(m, " fence[%d] = %08llx\n", i, error->fence[i]); - for (i = 0; i < ARRAY_SIZE(error->extra_instdone); i++) - err_printf(m, " INSTDONE_%d: 0x%08x\n", i, - error->extra_instdone[i]); - if (INTEL_INFO(dev)->gen >= 6) { err_printf(m, "ERROR: 0x%08x\n", error->error); @@ -855,7 +874,8 @@ static uint32_t i915_error_generate_code(struct drm_i915_private *dev_priv, if (engine_id) *engine_id = i; - return error->engine[i].ipehr ^ error->engine[i].instdone; + return error->engine[i].ipehr ^ + error->engine[i].instdone.instdone; } } @@ -998,7 +1018,6 @@ static void error_record_engine_registers(struct drm_i915_error_state *error, ee->faddr = I915_READ(RING_DMA_FADD(engine->mmio_base)); ee->ipeir = I915_READ(RING_IPEIR(engine->mmio_base)); ee->ipehr = I915_READ(RING_IPEHR(engine->mmio_base)); - ee->instdone = I915_READ(RING_INSTDONE(engine->mmio_base)); ee->instps = I915_READ(RING_INSTPS(engine->mmio_base)); ee->bbaddr = I915_READ(RING_BBADDR(engine->mmio_base)); if (INTEL_GEN(dev_priv) >= 8) { @@ -1010,9 +1029,10 @@ static void error_record_engine_registers(struct drm_i915_error_state *error, ee->faddr = I915_READ(DMA_FADD_I8XX); ee->ipeir = I915_READ(IPEIR); ee->ipehr = I915_READ(IPEHR); - ee->instdone = I915_READ(GEN2_INSTDONE); } + i915_get_engine_instdone(dev_priv, engine->id, &ee->instdone); + ee->waiting = intel_engine_has_waiter(engine); ee->instpm = I915_READ(RING_INSTPM(engine->mmio_base)); ee->acthd = intel_engine_get_active_head(engine); @@ -1372,8 +1392,6 @@ static void i915_capture_reg_state(struct drm_i915_private *dev_priv, } error->eir = I915_READ(EIR); error->pgtbl_er = I915_READ(PGTBL_ER); - - i915_get_extra_instdone(dev_priv, error->extra_instdone); } static void i915_error_capture_msg(struct drm_i915_private *dev_priv, @@ -1532,20 +1550,38 @@ const char *i915_cache_level_str(struct drm_i915_private *i915, int type) } /* NB: please notice the memset */ -void i915_get_extra_instdone(struct drm_i915_private *dev_priv, - uint32_t *instdone) +void i915_get_engine_instdone(struct drm_i915_private *dev_priv, + enum intel_engine_id engine_id, + struct intel_instdone *instdone) { - memset(instdone, 0, sizeof(*instdone) * I915_NUM_INSTDONE_REG); - - if (IS_GEN2(dev_priv) || IS_GEN3(dev_priv)) - instdone[0] = I915_READ(GEN2_INSTDONE); - else if (IS_GEN4(dev_priv) || IS_GEN5(dev_priv) || IS_GEN6(dev_priv)) { - instdone[0] = I915_READ(RING_INSTDONE(RENDER_RING_BASE)); - instdone[1] = I915_READ(GEN4_INSTDONE1); - } else if (INTEL_GEN(dev_priv) >= 7) { - instdone[0] = I915_READ(RING_INSTDONE(RENDER_RING_BASE)); - instdone[1] = I915_READ(GEN7_SC_INSTDONE); - instdone[2] = I915_READ(GEN7_SAMPLER_INSTDONE); - instdone[3] = I915_READ(GEN7_ROW_INSTDONE); + u32 mmio_base = dev_priv->engine[engine_id].mmio_base; + + memset(instdone, 0, sizeof(*instdone)); + + switch (INTEL_GEN(dev_priv)) { + default: + instdone->instdone = I915_READ(RING_INSTDONE(mmio_base)); + + if (engine_id != RCS) + break; + + instdone->slice_common = I915_READ(GEN7_SC_INSTDONE); + instdone->sampler = I915_READ(GEN7_SAMPLER_INSTDONE); + instdone->row = I915_READ(GEN7_ROW_INSTDONE); + + break; + case 6: + case 5: + case 4: + instdone->instdone = I915_READ(RING_INSTDONE(mmio_base)); + + if (engine_id == RCS) + /* HACK: Using the wrong struct member */ + instdone->slice_common = I915_READ(GEN4_INSTDONE1); + break; + case 3: + case 2: + instdone->instdone = I915_READ(GEN2_INSTDONE); + break; } } diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c index c128fdbd24e4..371647c4c53c 100644 --- a/drivers/gpu/drm/i915/i915_irq.c +++ b/drivers/gpu/drm/i915/i915_irq.c @@ -2545,18 +2545,36 @@ static void i915_reset_and_wakeup(struct drm_i915_private *dev_priv) wake_up_all(&dev_priv->gpu_error.reset_queue); } +static inline void +i915_err_print_instdone(struct drm_i915_private *dev_priv, + struct intel_instdone *instdone) +{ + pr_err(" INSTDONE: 0x%08x\n", instdone->instdone); + + if (INTEL_GEN(dev_priv) <= 3) + return; + + pr_err(" SC_INSTDONE: 0x%08x\n", instdone->slice_common); + + if (INTEL_GEN(dev_priv) <= 6) + return; + + pr_err(" SAMPLER_INSTDONE: 0x%08x\n", instdone->sampler); + pr_err(" ROW_INSTDONE: 0x%08x\n", instdone->row); +} + static void i915_report_and_clear_eir(struct drm_i915_private *dev_priv) { - uint32_t instdone[I915_NUM_INSTDONE_REG]; + struct intel_instdone instdone; u32 eir = I915_READ(EIR); - int pipe, i; + int pipe; if (!eir) return; pr_err("render error detected, EIR: 0x%08x\n", eir); - i915_get_extra_instdone(dev_priv, instdone); + i915_get_engine_instdone(dev_priv, RCS, &instdone); if (IS_G4X(dev_priv)) { if (eir & (GM45_ERROR_MEM_PRIV | GM45_ERROR_CP_PRIV)) { @@ -2564,8 +2582,7 @@ static void i915_report_and_clear_eir(struct drm_i915_private *dev_priv) pr_err(" IPEIR: 0x%08x\n", I915_READ(IPEIR_I965)); pr_err(" IPEHR: 0x%08x\n", I915_READ(IPEHR_I965)); - for (i = 0; i < ARRAY_SIZE(instdone); i++) - pr_err(" INSTDONE_%d: 0x%08x\n", i, instdone[i]); + i915_err_print_instdone(dev_priv, &instdone); pr_err(" INSTPS: 0x%08x\n", I915_READ(INSTPS)); pr_err(" ACTHD: 0x%08x\n", I915_READ(ACTHD_I965)); I915_WRITE(IPEIR_I965, ipeir); @@ -2600,8 +2617,7 @@ static void i915_report_and_clear_eir(struct drm_i915_private *dev_priv) if (eir & I915_ERROR_INSTRUCTION) { pr_err("instruction error\n"); pr_err(" INSTPM: 0x%08x\n", I915_READ(INSTPM)); - for (i = 0; i < ARRAY_SIZE(instdone); i++) - pr_err(" INSTDONE_%d: 0x%08x\n", i, instdone[i]); + i915_err_print_instdone(dev_priv, &instdone); if (INTEL_GEN(dev_priv) < 4) { u32 ipeir = I915_READ(IPEIR); @@ -2948,31 +2964,42 @@ static void semaphore_clear_deadlocks(struct drm_i915_private *dev_priv) engine->hangcheck.deadlock = 0; } +static bool instdone_unchanged(u32 current_instdone, u32 *old_instdone) +{ + u32 tmp = current_instdone | *old_instdone; + bool unchanged; + + unchanged = tmp == *old_instdone; + *old_instdone |= tmp; + + return unchanged; +} + static bool subunits_stuck(struct intel_engine_cs *engine) { - u32 instdone[I915_NUM_INSTDONE_REG]; + struct drm_i915_private *dev_priv = engine->i915; + struct intel_instdone instdone; + struct intel_instdone *accu_instdone = &engine->hangcheck.instdone; bool stuck; - int i; if (engine->id != RCS) return true; - i915_get_extra_instdone(engine->i915, instdone); + i915_get_engine_instdone(dev_priv, RCS, &instdone); /* There might be unstable subunit states even when * actual head is not moving. Filter out the unstable ones by * accumulating the undone -> done transitions and only * consider those as progress. */ - stuck = true; - for (i = 0; i < I915_NUM_INSTDONE_REG; i++) { - const u32 tmp = instdone[i] | engine->hangcheck.instdone[i]; - - if (tmp != engine->hangcheck.instdone[i]) - stuck = false; - - engine->hangcheck.instdone[i] |= tmp; - } + stuck = instdone_unchanged(instdone.instdone, + &accu_instdone->instdone); + stuck &= instdone_unchanged(instdone.slice_common, + &accu_instdone->slice_common); + stuck &= instdone_unchanged(instdone.sampler, + &accu_instdone->sampler); + stuck &= instdone_unchanged(instdone.row, + &accu_instdone->row); return stuck; } @@ -2983,7 +3010,7 @@ head_stuck(struct intel_engine_cs *engine, u64 acthd) if (acthd != engine->hangcheck.acthd) { /* Clear subunit states on head movement */ - memset(engine->hangcheck.instdone, 0, + memset(&engine->hangcheck.instdone, 0, sizeof(engine->hangcheck.instdone)); return HANGCHECK_ACTIVE; @@ -3153,7 +3180,7 @@ static void i915_hangcheck_elapsed(struct work_struct *work) /* Clear head and subunit states on seqno movement */ acthd = 0; - memset(engine->hangcheck.instdone, 0, + memset(&engine->hangcheck.instdone, 0, sizeof(engine->hangcheck.instdone)); } diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 70d96162def6..41331455a111 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -1708,7 +1708,6 @@ enum skl_disp_power_wells { #define GEN7_SC_INSTDONE _MMIO(0x7100) #define GEN7_SAMPLER_INSTDONE _MMIO(0xe160) #define GEN7_ROW_INSTDONE _MMIO(0xe164) -#define I915_NUM_INSTDONE_REG 4 #define RING_IPEIR(base) _MMIO((base)+0x64) #define RING_IPEHR(base) _MMIO((base)+0x68) /* diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.h b/drivers/gpu/drm/i915/intel_ringbuffer.h index 7f64d611159b..4ff47023e68d 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.h +++ b/drivers/gpu/drm/i915/intel_ringbuffer.h @@ -73,13 +73,21 @@ enum intel_engine_hangcheck_action { #define HANGCHECK_SCORE_RING_HUNG 31 +struct intel_instdone { + u32 instdone; + /* The following exist only in the RCS engine */ + u32 slice_common; + u32 sampler; + u32 row; +}; + struct intel_engine_hangcheck { u64 acthd; u32 seqno; int score; enum intel_engine_hangcheck_action action; int deadlock; - u32 instdone[I915_NUM_INSTDONE_REG]; + struct intel_instdone instdone; }; struct intel_ring { -- 2.30.2