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From: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
To: igt-dev@lists.freedesktop.org
Cc: Intel-gfx@lists.freedesktop.org
Subject: [Intel-gfx] [PATCH i-g-t 1/2] lib/i915: Add helper for copying engine maps from one context to another
Date: Fri, 24 Jan 2020 12:17:58 +0000	[thread overview]
Message-ID: <20200124121759.22308-1-tvrtko.ursulin@linux.intel.com> (raw)

From: Tvrtko Ursulin <tvrtko.ursulin@intel.com>

We also need to support copying across file descriptors.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Sreedhar Telukuntla <sreedhar.telukuntla@intel.com>
---
 lib/i915/gem_context.c | 30 ++++++++++++++++++++++++++++++
 lib/i915/gem_context.h |  2 ++
 2 files changed, 32 insertions(+)

diff --git a/lib/i915/gem_context.c b/lib/i915/gem_context.c
index 0b6a554dfe27..41957b66ca52 100644
--- a/lib/i915/gem_context.c
+++ b/lib/i915/gem_context.c
@@ -462,3 +462,33 @@ bool gem_context_has_engine(int fd, uint32_t ctx, uint64_t engine)
 
 	return __gem_execbuf(fd, &execbuf) == -ENOENT;
 }
+
+/**
+ * gem_context_copy_engines:
+ * @src_fd: open i915 drm file descriptor where @src context belongs to
+ * @src: source engine map context id
+ * @dst_fd: open i915 drm file descriptor where @dst context belongs to
+ * @dst: destination engine map context id
+ *
+ * Special purpose wrapper for copying engine map from one context to another.
+ *
+ * In can be called regardless of whether the kernel supports context engine
+ * maps and is a no-op if not supported.
+ */
+void
+gem_context_copy_engines(int src_fd, uint32_t src, int dst_fd, uint32_t dst)
+{
+	I915_DEFINE_CONTEXT_PARAM_ENGINES(engines, I915_EXEC_RING_MASK + 1);
+	struct drm_i915_gem_context_param param = {
+		.param = I915_CONTEXT_PARAM_ENGINES,
+		.ctx_id = src,
+		.size = sizeof(engines),
+		.value = to_user_pointer(&engines),
+	};
+
+	if (__gem_context_get_param(src_fd, &param) || !param.size)
+		return;
+
+	param.ctx_id = dst;
+	gem_context_set_param(dst_fd, &param);
+}
diff --git a/lib/i915/gem_context.h b/lib/i915/gem_context.h
index cf2ba33fee8f..15e5db281b79 100644
--- a/lib/i915/gem_context.h
+++ b/lib/i915/gem_context.h
@@ -42,6 +42,8 @@ uint32_t gem_context_clone(int i915,
 			   uint32_t src, unsigned int share,
 			   unsigned int flags);
 uint32_t gem_context_clone_with_engines(int i915, uint32_t src);
+void gem_context_copy_engines(int src_fd, uint32_t src,
+			      int dst_fd, uint32_t dst);
 
 uint32_t gem_queue_create(int i915);
 uint32_t gem_queue_clone_with_engines(int i915, uint32_t src);
-- 
2.20.1

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Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx

WARNING: multiple messages have this Message-ID (diff)
From: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
To: igt-dev@lists.freedesktop.org
Cc: Intel-gfx@lists.freedesktop.org,
	Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Subject: [igt-dev] [PATCH i-g-t 1/2] lib/i915: Add helper for copying engine maps from one context to another
Date: Fri, 24 Jan 2020 12:17:58 +0000	[thread overview]
Message-ID: <20200124121759.22308-1-tvrtko.ursulin@linux.intel.com> (raw)

From: Tvrtko Ursulin <tvrtko.ursulin@intel.com>

We also need to support copying across file descriptors.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Sreedhar Telukuntla <sreedhar.telukuntla@intel.com>
---
 lib/i915/gem_context.c | 30 ++++++++++++++++++++++++++++++
 lib/i915/gem_context.h |  2 ++
 2 files changed, 32 insertions(+)

diff --git a/lib/i915/gem_context.c b/lib/i915/gem_context.c
index 0b6a554dfe27..41957b66ca52 100644
--- a/lib/i915/gem_context.c
+++ b/lib/i915/gem_context.c
@@ -462,3 +462,33 @@ bool gem_context_has_engine(int fd, uint32_t ctx, uint64_t engine)
 
 	return __gem_execbuf(fd, &execbuf) == -ENOENT;
 }
+
+/**
+ * gem_context_copy_engines:
+ * @src_fd: open i915 drm file descriptor where @src context belongs to
+ * @src: source engine map context id
+ * @dst_fd: open i915 drm file descriptor where @dst context belongs to
+ * @dst: destination engine map context id
+ *
+ * Special purpose wrapper for copying engine map from one context to another.
+ *
+ * In can be called regardless of whether the kernel supports context engine
+ * maps and is a no-op if not supported.
+ */
+void
+gem_context_copy_engines(int src_fd, uint32_t src, int dst_fd, uint32_t dst)
+{
+	I915_DEFINE_CONTEXT_PARAM_ENGINES(engines, I915_EXEC_RING_MASK + 1);
+	struct drm_i915_gem_context_param param = {
+		.param = I915_CONTEXT_PARAM_ENGINES,
+		.ctx_id = src,
+		.size = sizeof(engines),
+		.value = to_user_pointer(&engines),
+	};
+
+	if (__gem_context_get_param(src_fd, &param) || !param.size)
+		return;
+
+	param.ctx_id = dst;
+	gem_context_set_param(dst_fd, &param);
+}
diff --git a/lib/i915/gem_context.h b/lib/i915/gem_context.h
index cf2ba33fee8f..15e5db281b79 100644
--- a/lib/i915/gem_context.h
+++ b/lib/i915/gem_context.h
@@ -42,6 +42,8 @@ uint32_t gem_context_clone(int i915,
 			   uint32_t src, unsigned int share,
 			   unsigned int flags);
 uint32_t gem_context_clone_with_engines(int i915, uint32_t src);
+void gem_context_copy_engines(int src_fd, uint32_t src,
+			      int dst_fd, uint32_t dst);
 
 uint32_t gem_queue_create(int i915);
 uint32_t gem_queue_clone_with_engines(int i915, uint32_t src);
-- 
2.20.1

_______________________________________________
igt-dev mailing list
igt-dev@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/igt-dev

             reply	other threads:[~2020-01-24 12:18 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-01-24 12:17 Tvrtko Ursulin [this message]
2020-01-24 12:17 ` [igt-dev] [PATCH i-g-t 1/2] lib/i915: Add helper for copying engine maps from one context to another Tvrtko Ursulin
2020-01-24 12:17 ` [Intel-gfx] [PATCH i-g-t 2/2] tests/i915/gem_exec_parallel:Set engine map to default context Tvrtko Ursulin
2020-01-24 12:17   ` [igt-dev] " Tvrtko Ursulin
2020-01-24 12:25   ` [Intel-gfx] " Chris Wilson
2020-01-24 12:25     ` Chris Wilson
2020-01-24 12:23 ` [Intel-gfx] [PATCH i-g-t 1/2] lib/i915: Add helper for copying engine maps from one context to another Chris Wilson
2020-01-24 12:23   ` [igt-dev] " Chris Wilson
2020-01-24 12:26   ` [Intel-gfx] " Tvrtko Ursulin
2020-01-24 12:26     ` [igt-dev] " Tvrtko Ursulin
2020-01-24 12:29     ` [Intel-gfx] " Chris Wilson
2020-01-24 12:29       ` [igt-dev] " Chris Wilson
2020-01-24 12:28 ` [Intel-gfx] [PATCH i-g-t v2 " Tvrtko Ursulin
2020-01-24 12:28   ` [igt-dev] " Tvrtko Ursulin
2020-01-24 12:48   ` [Intel-gfx] " Chris Wilson
2020-01-24 12:48     ` [igt-dev] " Chris Wilson

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