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drm/i915: Add execlist_port_complete

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When first execlist entry is processed, we move the port (contents).
Introduce function for this as execlist and guc use this common
operation.

v2: rebase. s/GEM_DEBUG_BUG/GEM_BUG (Chris)
v3: rebase

Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20170922124307.10914-4-mika.kuoppala@intel.com
This commit is contained in:
Mika Kuoppala 2017-09-22 15:43:06 +03:00 committed by Mika Kuoppala
parent cf4591d1ce
commit 7a62cc6107
3 changed files with 28 additions and 16 deletions
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8
drivers/gpu/drm/i915/i915_guc_submission.c
View File

@ -592,7 +592,7 @@ static void i915_guc_dequeue(struct intel_engine_cs *engine)
rq->priotree.priority = INT_MAX;
__i915_gem_request_submit(rq);
trace_i915_gem_request_in(rq, port_index(port, engine));
trace_i915_gem_request_in(rq, port_index(port, execlists));
last = rq;
submit = true;
}
@ -615,7 +615,8 @@ static void i915_guc_dequeue(struct intel_engine_cs *engine)
static void i915_guc_irq_handler(unsigned long data)
{
struct intel_engine_cs * const engine = (struct intel_engine_cs *)data;
struct execlist_port *port = engine->execlists.port;
struct intel_engine_execlists * const execlists = &engine->execlists;
struct execlist_port *port = execlists->port;
struct drm_i915_gem_request *rq;
rq = port_request(&port[0]);
@ -623,8 +624,7 @@ static void i915_guc_irq_handler(unsigned long data)
trace_i915_gem_request_out(rq);
i915_gem_request_put(rq);
port[0] = port[1];
memset(&port[1], 0, sizeof(port[1]));
execlists_port_complete(execlists, port);
rq = port_request(&port[0]);
}

22
drivers/gpu/drm/i915/intel_lrc.c
View File

@ -454,7 +454,8 @@ static void port_assign(struct execlist_port *port,
static void execlists_dequeue(struct intel_engine_cs *engine)
{
struct drm_i915_gem_request *last;
struct execlist_port *port = engine->execlists.port;
struct intel_engine_execlists * const execlists = &engine->execlists;
struct execlist_port *port = execlists->port;
struct rb_node *rb;
bool submit = false;
@ -468,8 +469,6 @@ static void execlists_dequeue(struct intel_engine_cs *engine)
*/
last->tail = last->wa_tail;
GEM_BUG_ON(port_isset(&port[1]));
/* Hardware submission is through 2 ports. Conceptually each port
* has a (RING_START, RING_HEAD, RING_TAIL) tuple. RING_START is
* static for a context, and unique to each, so we only execute
@ -492,8 +491,8 @@ static void execlists_dequeue(struct intel_engine_cs *engine)
*/
spin_lock_irq(&engine->timeline->lock);
rb = engine->execlists.first;
GEM_BUG_ON(rb_first(&engine->execlists.queue) != rb);
rb = execlists->first;
GEM_BUG_ON(rb_first(&execlists->queue) != rb);
while (rb) {
struct i915_priolist *p = rb_entry(rb, typeof(*p), node);
struct drm_i915_gem_request *rq, *rn;
@ -516,7 +515,7 @@ static void execlists_dequeue(struct intel_engine_cs *engine)
* combine this request with the last, then we
* are done.
*/
if (port != engine->execlists.port) {
if (port != execlists->port) {
__list_del_many(&p->requests,
&rq->priotree.link);
goto done;
@ -541,25 +540,27 @@ static void execlists_dequeue(struct intel_engine_cs *engine)
if (submit)
port_assign(port, last);
port++;
GEM_BUG_ON(port_isset(port));
}
INIT_LIST_HEAD(&rq->priotree.link);
rq->priotree.priority = INT_MAX;
__i915_gem_request_submit(rq);
trace_i915_gem_request_in(rq, port_index(port, engine));
trace_i915_gem_request_in(rq, port_index(port, execlists));
last = rq;
submit = true;
}
rb = rb_next(rb);
rb_erase(&p->node, &engine->execlists.queue);
rb_erase(&p->node, &execlists->queue);
INIT_LIST_HEAD(&p->requests);
if (p->priority != I915_PRIORITY_NORMAL)
kmem_cache_free(engine->i915->priorities, p);
}
done:
engine->execlists.first = rb;
execlists->first = rb;
if (submit)
port_assign(port, last);
spin_unlock_irq(&engine->timeline->lock);
@ -748,8 +749,7 @@ static void intel_lrc_irq_handler(unsigned long data)
trace_i915_gem_request_out(rq);
i915_gem_request_put(rq);
port[0] = port[1];
memset(&port[1], 0, sizeof(port[1]));
execlists_port_complete(execlists, port);
} else {
port_set(port, port_pack(rq, count));
}

14
drivers/gpu/drm/i915/intel_ringbuffer.h
View File

@ -228,7 +228,7 @@ struct intel_engine_execlists {
#define port_unpack(p, count) ptr_unpack_bits((p)->request_count, count, EXECLIST_COUNT_BITS)
#define port_set(p, packed) ((p)->request_count = (packed))
#define port_isset(p) ((p)->request_count)
#define port_index(p, e) ((p) - (e)->execlists.port)
#define port_index(p, execlists) ((p) - (execlists)->port)
/**
* @context_id: context ID for port
@ -511,6 +511,18 @@ struct intel_engine_cs {
u32 (*get_cmd_length_mask)(u32 cmd_header);
};
static inline void
execlists_port_complete(struct intel_engine_execlists * const execlists,
struct execlist_port * const port)
{
struct execlist_port * const port1 = &execlists->port[1];
GEM_BUG_ON(port_index(port, execlists) != 0);
*port = *port1;
memset(port1, 0, sizeof(struct execlist_port));
}
static inline unsigned int
intel_engine_flag(const struct intel_engine_cs *engine)
{