[PATCH 6/7] drm/i915: Move the scheduler feature bits into the purview of the engines
Chris Wilson
chris at chris-wilson.co.uk
Tue Jan 30 21:11:07 UTC 2018
Rather than having the high level ioctl interface guess the underlying
implementation details, having the implementation declare what
capabilities it exports. We define an intel_driver_caps, similar to the
intel_device_info, which instead of trying to describe the HW gives
details on what the driver itself supports. This is then populated by
the engine backend for the new scheduler capability field for use
elsewhere.
Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
Cc: Tomasz Lis <tomasz.lis at intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen at linux.intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
Cc: Michal Wajdeczko <michal.wajdeczko at intel.com>
---
drivers/gpu/drm/i915/i915_drv.c | 8 +-------
drivers/gpu/drm/i915/i915_drv.h | 2 ++
drivers/gpu/drm/i915/i915_gem.c | 3 +++
drivers/gpu/drm/i915/i915_gpu_error.c | 7 +++++--
drivers/gpu/drm/i915/intel_device_info.c | 6 ++++++
drivers/gpu/drm/i915/intel_device_info.h | 7 +++++++
drivers/gpu/drm/i915/intel_lrc.c | 6 ++++++
7 files changed, 30 insertions(+), 9 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index 1ec12add34b2..733f71637914 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -372,13 +372,7 @@ static int i915_getparam(struct drm_device *dev, void *data,
value = i915_gem_mmap_gtt_version();
break;
case I915_PARAM_HAS_SCHEDULER:
- value = 0;
- if (dev_priv->engine[RCS] && dev_priv->engine[RCS]->schedule) {
- value |= I915_SCHEDULER_CAP_ENABLED;
- value |= I915_SCHEDULER_CAP_PRIORITY;
- if (HAS_LOGICAL_RING_PREEMPTION(dev_priv))
- value |= I915_SCHEDULER_CAP_PREEMPTION;
- }
+ value = dev_priv->caps.scheduler;
break;
case I915_PARAM_MMAP_VERSION:
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 454d8f937fae..c719ae327144 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -468,6 +468,7 @@ struct i915_gpu_state {
u32 reset_count;
u32 suspend_count;
struct intel_device_info device_info;
+ struct intel_driver_caps driver_caps;
struct i915_params params;
struct i915_error_uc {
@@ -1807,6 +1808,7 @@ struct drm_i915_private {
struct kmem_cache *priorities;
const struct intel_device_info info;
+ struct intel_driver_caps caps;
/**
* Data Stolen Memory - aka "i915 stolen memory" gives us the start and
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index d7841a983c5f..90aa375bbde8 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -3223,8 +3223,11 @@ void i915_gem_set_wedged(struct drm_i915_private *i915)
* start to complete all requests.
*/
engine->submit_request = nop_complete_submit_request;
+ engine->schedule = NULL;
}
+ i915->caps.scheduler = 0;
+
/*
* Make sure no request can slip through without getting completed by
* either this call here to intel_engine_init_global_seqno, or the one
diff --git a/drivers/gpu/drm/i915/i915_gpu_error.c b/drivers/gpu/drm/i915/i915_gpu_error.c
index a81351d9e3a6..a92b0c0377c7 100644
--- a/drivers/gpu/drm/i915/i915_gpu_error.c
+++ b/drivers/gpu/drm/i915/i915_gpu_error.c
@@ -573,11 +573,13 @@ static void print_error_obj(struct drm_i915_error_state_buf *m,
}
static void err_print_capabilities(struct drm_i915_error_state_buf *m,
- const struct intel_device_info *info)
+ const struct intel_device_info *info,
+ const struct intel_driver_caps *caps)
{
struct drm_printer p = i915_error_printer(m);
intel_device_info_dump_flags(info, &p);
+ intel_driver_caps_print(caps, &p);
}
static void err_print_params(struct drm_i915_error_state_buf *m,
@@ -800,7 +802,7 @@ int i915_error_state_to_str(struct drm_i915_error_state_buf *m,
if (error->display)
intel_display_print_error_state(m, error->display);
- err_print_capabilities(m, &error->device_info);
+ err_print_capabilities(m, &error->device_info, &error->driver_caps);
err_print_params(m, &error->params);
err_print_uc(m, &error->uc);
@@ -1731,6 +1733,7 @@ static void i915_capture_gen_state(struct drm_i915_private *dev_priv,
memcpy(&error->device_info,
INTEL_INFO(dev_priv),
sizeof(error->device_info));
+ error->driver_caps = dev_priv->caps;
}
static __always_inline void dup_param(const char *type, void *x)
diff --git a/drivers/gpu/drm/i915/intel_device_info.c b/drivers/gpu/drm/i915/intel_device_info.c
index a2c16140169f..298f8996cc54 100644
--- a/drivers/gpu/drm/i915/intel_device_info.c
+++ b/drivers/gpu/drm/i915/intel_device_info.c
@@ -586,3 +586,9 @@ void intel_device_info_runtime_init(struct intel_device_info *info)
/* Initialize command stream timestamp frequency */
info->cs_timestamp_frequency_khz = read_timestamp_frequency(dev_priv);
}
+
+void intel_driver_caps_print(const struct intel_driver_caps *caps,
+ struct drm_printer *p)
+{
+ drm_printf(p, "scheduler: %x\n", caps->scheduler);
+}
diff --git a/drivers/gpu/drm/i915/intel_device_info.h b/drivers/gpu/drm/i915/intel_device_info.h
index 9542018d11d0..71fdfb0451ef 100644
--- a/drivers/gpu/drm/i915/intel_device_info.h
+++ b/drivers/gpu/drm/i915/intel_device_info.h
@@ -167,6 +167,10 @@ struct intel_device_info {
} color;
};
+struct intel_driver_caps {
+ unsigned int scheduler;
+};
+
static inline unsigned int sseu_subslice_total(const struct sseu_dev_info *sseu)
{
return hweight8(sseu->slice_mask) * hweight8(sseu->subslice_mask);
@@ -182,4 +186,7 @@ void intel_device_info_dump_flags(const struct intel_device_info *info,
void intel_device_info_dump_runtime(const struct intel_device_info *info,
struct drm_printer *p);
+void intel_driver_caps_print(const struct intel_driver_caps *caps,
+ struct drm_printer *p);
+
#endif
diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c
index 2fa328d512fc..5390894001f0 100644
--- a/drivers/gpu/drm/i915/intel_lrc.c
+++ b/drivers/gpu/drm/i915/intel_lrc.c
@@ -1906,6 +1906,12 @@ static void execlists_set_default_submission(struct intel_engine_cs *engine)
engine->unpark = NULL;
engine->flags |= I915_ENGINE_SUPPORTS_STATS;
+
+ engine->i915->caps.scheduler =
+ I915_SCHEDULER_CAP_ENABLED |
+ I915_SCHEDULER_CAP_PRIORITY;
+ if (HAS_LOGICAL_RING_PREEMPTION(engine->i915))
+ engine->i915->caps.scheduler |= I915_SCHEDULER_CAP_PREEMPTION;
}
static void
--
2.15.1
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