From: Ben Widawsky <benjamin.widawsky@xxxxxxxxx>
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 <ben@xxxxxxxxxxxx>
Signed-off-by: Imre Deak <imre.deak@xxxxxxxxx>
Reviewed-by: Mika Kuoppala <mika.kuoppala@xxxxxxxxx>
---
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 a6d174a..ba155c0 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 =");
+ seq_puts(m, "\tinstdone read =\n");
- for (j = 0; j < I915_NUM_INSTDONE_REG; j++)
- seq_printf(m, " 0x%08x", instdone[j]);
+ i915_instdone_info(dev_priv, m, &instdone);
- seq_puts(m, "\n\tinstdone accu =");
+ seq_puts(m, "\tinstdone accu =\n");
- for (j = 0; j < I915_NUM_INSTDONE_REG; j++)
- seq_printf(m, " 0x%08x",
- engine->hangcheck.instdone[j]);
-
- 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 4dd307e..3568995 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 334f15d..6a2775a 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 c128fdb..371647c 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 70d9616..4133145 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 7f64d61..4ff4702 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 {
--
2.5.0
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