All of lore.kernel.org
 help / color / mirror / Atom feed
* [igt-dev] [CI i-g-t] lib/ioctl_wrappers: Handle PREAD/PWRITE ioctls not supported in gem_read/write
@ 2020-08-29  5:09 Ashutosh Dixit
  2020-08-29  5:38 ` [igt-dev] ✗ Fi.CI.BAT: failure for lib/ioctl_wrappers: Handle PREAD/PWRITE ioctls not supported in gem_read/write (rev3) Patchwork
  0 siblings, 1 reply; 15+ messages in thread
From: Ashutosh Dixit @ 2020-08-29  5:09 UTC (permalink / raw)
  To: igt-dev

Trial patch to replace PREAD/PWRITE ioctls with mmap + memcpy in
gem_read/write. For CI only. Please don't review.

Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
---
 lib/ioctl_wrappers.c | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/lib/ioctl_wrappers.c b/lib/ioctl_wrappers.c
index 3781286d8..77752e8db 100644
--- a/lib/ioctl_wrappers.c
+++ b/lib/ioctl_wrappers.c
@@ -55,6 +55,7 @@
 #include "igt_debugfs.h"
 #include "igt_sysfs.h"
 #include "config.h"
+#include "i915/gem_mman.h"
 
 #ifdef HAVE_VALGRIND
 #include <valgrind/valgrind.h>
@@ -353,7 +354,11 @@ int __gem_write(int fd, uint32_t handle, uint64_t offset, const void *buf, uint6
  */
 void gem_write(int fd, uint32_t handle, uint64_t offset, const void *buf, uint64_t length)
 {
-	igt_assert_eq(__gem_write(fd, handle, offset, buf, length), 0);
+	/* offset arg of gem_mmap__device_coherent must be 0 */
+	void *ptr = gem_mmap__device_coherent(fd, handle, 0, offset + length, PROT_WRITE);
+
+	memcpy(ptr + offset, buf, length);
+	munmap(ptr, offset + length);
 }
 
 int __gem_read(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t length)
@@ -385,7 +390,11 @@ int __gem_read(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t len
  */
 void gem_read(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t length)
 {
-	igt_assert_eq(__gem_read(fd, handle, offset, buf, length), 0);
+	/* offset arg of gem_mmap__device_coherent must be 0 */
+	void *ptr = gem_mmap__device_coherent(fd, handle, 0, offset + length, PROT_READ);
+
+	memcpy(buf, ptr + offset, length);
+	munmap(ptr, offset + length);
 }
 
 int __gem_set_domain(int fd, uint32_t handle, uint32_t read, uint32_t write)
-- 
2.26.2.108.g048abe1751

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

^ permalink raw reply related	[flat|nested] 15+ messages in thread
* [igt-dev] [CI i-g-t] lib/ioctl_wrappers: Handle PREAD/PWRITE ioctls not supported in gem_read/write
@ 2021-03-15 21:16 Ashutosh Dixit
  0 siblings, 0 replies; 15+ messages in thread
From: Ashutosh Dixit @ 2021-03-15 21:16 UTC (permalink / raw)
  To: igt-dev

FOR CI ONLY. PLEASE DON'T REVIEW.

Trial patch to replace PREAD/PWRITE ioctls with mmap + memcpy in gem_read/write.

v11: Simplified patch to use previous __gem_read/__gem_write
v12: Fix CI failures in gem_madvise and gen9_exec_parse
v13: Skip mmap for 0 length read/write's
v14: Rebase on latest master, remove redundant asserts/checks in mmap_read/write
v15: Fix CI failures in gem_exec_parallel@userptr
v16: rebase, gem_exec_parallel@userptr no longer does a gem_read

Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
---
 lib/ioctl_wrappers.c     | 103 +++++++++++++++++++++++++++++++++++++--
 lib/ioctl_wrappers.h     |   4 +-
 tests/i915/gem_madvise.c |   2 +-
 tests/prime_vgem.c       |   8 +--
 4 files changed, 108 insertions(+), 9 deletions(-)

diff --git a/lib/ioctl_wrappers.c b/lib/ioctl_wrappers.c
index 45415621b7..82eeeb447a 100644
--- a/lib/ioctl_wrappers.c
+++ b/lib/ioctl_wrappers.c
@@ -56,6 +56,7 @@
 #include "igt_debugfs.h"
 #include "igt_sysfs.h"
 #include "config.h"
+#include "i915/gem_mman.h"
 
 #ifdef HAVE_VALGRIND
 #include <valgrind/valgrind.h>
@@ -342,7 +343,7 @@ int __gem_write(int fd, uint32_t handle, uint64_t offset, const void *buf, uint6
 }
 
 /**
- * gem_write:
+ * gem_pwrite:
  * @fd: open i915 drm file descriptor
  * @handle: gem buffer object handle
  * @offset: offset within the buffer of the subrange
@@ -352,7 +353,7 @@ int __gem_write(int fd, uint32_t handle, uint64_t offset, const void *buf, uint6
  * This wraps the PWRITE ioctl, which is to upload a linear data to a subrange
  * of a gem buffer object.
  */
-void gem_write(int fd, uint32_t handle, uint64_t offset, const void *buf, uint64_t length)
+void gem_pwrite(int fd, uint32_t handle, uint64_t offset, const void *buf, uint64_t length)
 {
 	igt_assert_eq(__gem_write(fd, handle, offset, buf, length), 0);
 }
@@ -373,6 +374,102 @@ int __gem_read(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t len
 		err = -errno;
 	return err;
 }
+/**
+ * gem_pread:
+ * @fd: open i915 drm file descriptor
+ * @handle: gem buffer object handle
+ * @offset: offset within the buffer of the subrange
+ * @buf: pointer to the data to read into
+ * @length: size of the subrange
+ *
+ * This wraps the PREAD ioctl, which is to download a linear data to a subrange
+ * of a gem buffer object.
+ */
+void gem_pread(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t length)
+{
+	igt_assert_eq(__gem_read(fd, handle, offset, buf, length), 0);
+}
+
+static bool is_cache_coherent(int fd, uint32_t handle)
+{
+	return gem_get_caching(fd, handle) != I915_CACHING_NONE;
+}
+
+static void mmap_write(int fd, uint32_t handle, uint64_t offset,
+		       const void *buf, uint64_t length)
+{
+	void *map = NULL;
+
+	if (!length)
+		return;
+
+	if (is_cache_coherent(fd, handle)) {
+		/* offset arg for mmap functions must be 0 */
+		map = __gem_mmap__cpu_coherent(fd, handle, 0, offset + length,
+					       PROT_READ | PROT_WRITE);
+		if (map)
+			gem_set_domain(fd, handle,
+				       I915_GEM_DOMAIN_CPU, I915_GEM_DOMAIN_CPU);
+	}
+
+	if (!map) {
+		map = __gem_mmap_offset__wc(fd, handle, 0, offset + length,
+					    PROT_READ | PROT_WRITE);
+		if (!map)
+			map = gem_mmap__wc(fd, handle, 0, offset + length,
+					   PROT_READ | PROT_WRITE);
+		gem_set_domain(fd, handle,
+			       I915_GEM_DOMAIN_WC, I915_GEM_DOMAIN_WC);
+	}
+
+	memcpy(map + offset, buf, length);
+	munmap(map, offset + length);
+}
+
+/**
+ * gem_write:
+ * @fd: open i915 drm file descriptor
+ * @handle: gem buffer object handle
+ * @offset: offset within the buffer of the subrange
+ * @buf: pointer to the data to write into the buffer
+ * @length: size of the subrange
+ *
+ * This wraps the PWRITE ioctl, which is to upload a linear data to a subrange
+ * of a gem buffer object.
+ */
+void gem_write(int fd, uint32_t handle, uint64_t offset, const void *buf, uint64_t length)
+{
+	mmap_write(fd, handle, offset, buf, length);
+}
+
+static void mmap_read(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t length)
+{
+	void *map = NULL;
+
+	if (!length)
+		return;
+
+	if (gem_has_llc(fd) || is_cache_coherent(fd, handle)) {
+		/* offset arg for mmap functions must be 0 */
+		map = __gem_mmap__cpu_coherent(fd, handle, 0,
+					       offset + length, PROT_READ);
+		if (map)
+			gem_set_domain(fd, handle, I915_GEM_DOMAIN_CPU, 0);
+	}
+
+	if (!map) {
+		map = __gem_mmap_offset__wc(fd, handle, 0, offset + length,
+					    PROT_READ);
+		if (!map)
+			map = gem_mmap__wc(fd, handle, 0, offset + length,
+					   PROT_READ);
+		gem_set_domain(fd, handle, I915_GEM_DOMAIN_WC, 0);
+	}
+
+	memcpy(buf, map + offset, length);
+	munmap(map, offset + length);
+}
+
 /**
  * gem_read:
  * @fd: open i915 drm file descriptor
@@ -386,7 +483,7 @@ int __gem_read(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t len
  */
 void gem_read(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t length)
 {
-	igt_assert_eq(__gem_read(fd, handle, offset, buf, length), 0);
+	mmap_read(fd, handle, offset, buf, length);
 }
 
 int __gem_set_domain(int fd, uint32_t handle, uint32_t read, uint32_t write)
diff --git a/lib/ioctl_wrappers.h b/lib/ioctl_wrappers.h
index 69e198419c..13ff799aab 100644
--- a/lib/ioctl_wrappers.h
+++ b/lib/ioctl_wrappers.h
@@ -68,8 +68,10 @@ uint32_t gem_flink(int fd, uint32_t handle);
 uint32_t gem_open(int fd, uint32_t name);
 void gem_close(int fd, uint32_t handle);
 int __gem_write(int fd, uint32_t handle, uint64_t offset, const void *buf, uint64_t length);
-void gem_write(int fd, uint32_t handle, uint64_t offset,  const void *buf, uint64_t length);
+void gem_pwrite(int fd, uint32_t handle, uint64_t offset,  const void *buf, uint64_t length);
 int __gem_read(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t length);
+void gem_pread(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t length);
+void gem_write(int fd, uint32_t handle, uint64_t offset,  const void *buf, uint64_t length);
 void gem_read(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t length);
 int __gem_set_domain(int fd, uint32_t handle, uint32_t read, uint32_t write);
 void gem_set_domain(int fd, uint32_t handle, uint32_t read, uint32_t write);
diff --git a/tests/i915/gem_madvise.c b/tests/i915/gem_madvise.c
index 2cd0b5d7cc..ce78b76b9f 100644
--- a/tests/i915/gem_madvise.c
+++ b/tests/i915/gem_madvise.c
@@ -175,7 +175,7 @@ dontneed_before_exec(void)
 	memset(&exec, 0, sizeof(exec));
 
 	exec.handle = gem_create(fd, OBJECT_SIZE);
-	gem_write(fd, exec.handle, 0, buf, sizeof(buf));
+	gem_pwrite(fd, exec.handle, 0, buf, sizeof(buf));
 	gem_madvise(fd, exec.handle, I915_MADV_DONTNEED);
 
 	execbuf.buffers_ptr = to_user_pointer(&exec);
diff --git a/tests/prime_vgem.c b/tests/prime_vgem.c
index 07ff69a245..2d4d283141 100644
--- a/tests/prime_vgem.c
+++ b/tests/prime_vgem.c
@@ -59,7 +59,7 @@ static void test_read(int vgem, int i915)
 
 	for (i = 0; i < 1024; i++) {
 		uint32_t tmp;
-		gem_read(i915, handle, 4096*i, &tmp, sizeof(tmp));
+		gem_pread(i915, handle, 4096*i, &tmp, sizeof(tmp));
 		igt_assert_eq(tmp, i);
 	}
 	gem_close(i915, handle);
@@ -94,14 +94,14 @@ static void test_fence_read(int i915, int vgem)
 		close(slave[1]);
 		for (i = 0; i < 1024; i++) {
 			uint32_t tmp;
-			gem_read(i915, handle, 4096*i, &tmp, sizeof(tmp));
+			gem_pread(i915, handle, 4096*i, &tmp, sizeof(tmp));
 			igt_assert_eq(tmp, 0);
 		}
 		write(master[1], &child, sizeof(child));
 		read(slave[0], &child, sizeof(child));
 		for (i = 0; i < 1024; i++) {
 			uint32_t tmp;
-			gem_read(i915, handle, 4096*i, &tmp, sizeof(tmp));
+			gem_pread(i915, handle, 4096*i, &tmp, sizeof(tmp));
 			igt_assert_eq(tmp, i);
 		}
 		gem_close(i915, handle);
@@ -279,7 +279,7 @@ static void test_write(int vgem, int i915)
 	gem_close(vgem, scratch.handle);
 
 	for (i = 0; i < 1024; i++)
-		gem_write(i915, handle, 4096*i, &i, sizeof(i));
+		gem_pwrite(i915, handle, 4096*i, &i, sizeof(i));
 	gem_close(i915, handle);
 
 	for (i = 0; i < 1024; i++)
-- 
2.29.2

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

^ permalink raw reply related	[flat|nested] 15+ messages in thread
* [igt-dev] [CI i-g-t] lib/ioctl_wrappers: Handle PREAD/PWRITE ioctls not supported in gem_read/write
@ 2021-01-21  5:52 Ashutosh Dixit
  0 siblings, 0 replies; 15+ messages in thread
From: Ashutosh Dixit @ 2021-01-21  5:52 UTC (permalink / raw)
  To: igt-dev

FOR CI ONLY. PLEASE DON'T REVIEW.

Trial patch to replace PREAD/PWRITE ioctls with mmap + memcpy in gem_read/write.

v11: Simplified patch to use previous __gem_read/__gem_write
v12: Fix CI failures in gem_madvise and gen9_exec_parse
v13: Skip mmap for 0 length read/write's
v14: Rebase on latest master, remove redundant asserts/checks in mmap_read/write
v15: Fix CI failures in gem_exec_parallel@userptr

Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
---
 lib/ioctl_wrappers.c           | 103 ++++++++++++++++++++++++++++++++-
 lib/ioctl_wrappers.h           |   4 +-
 tests/i915/gem_exec_parallel.c |  10 +++-
 tests/i915/gem_madvise.c       |   2 +-
 tests/prime_vgem.c             |   8 +--
 5 files changed, 115 insertions(+), 12 deletions(-)

diff --git a/lib/ioctl_wrappers.c b/lib/ioctl_wrappers.c
index 45415621b7..82eeeb447a 100644
--- a/lib/ioctl_wrappers.c
+++ b/lib/ioctl_wrappers.c
@@ -56,6 +56,7 @@
 #include "igt_debugfs.h"
 #include "igt_sysfs.h"
 #include "config.h"
+#include "i915/gem_mman.h"
 
 #ifdef HAVE_VALGRIND
 #include <valgrind/valgrind.h>
@@ -342,7 +343,7 @@ int __gem_write(int fd, uint32_t handle, uint64_t offset, const void *buf, uint6
 }
 
 /**
- * gem_write:
+ * gem_pwrite:
  * @fd: open i915 drm file descriptor
  * @handle: gem buffer object handle
  * @offset: offset within the buffer of the subrange
@@ -352,7 +353,7 @@ int __gem_write(int fd, uint32_t handle, uint64_t offset, const void *buf, uint6
  * This wraps the PWRITE ioctl, which is to upload a linear data to a subrange
  * of a gem buffer object.
  */
-void gem_write(int fd, uint32_t handle, uint64_t offset, const void *buf, uint64_t length)
+void gem_pwrite(int fd, uint32_t handle, uint64_t offset, const void *buf, uint64_t length)
 {
 	igt_assert_eq(__gem_write(fd, handle, offset, buf, length), 0);
 }
@@ -373,6 +374,102 @@ int __gem_read(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t len
 		err = -errno;
 	return err;
 }
+/**
+ * gem_pread:
+ * @fd: open i915 drm file descriptor
+ * @handle: gem buffer object handle
+ * @offset: offset within the buffer of the subrange
+ * @buf: pointer to the data to read into
+ * @length: size of the subrange
+ *
+ * This wraps the PREAD ioctl, which is to download a linear data to a subrange
+ * of a gem buffer object.
+ */
+void gem_pread(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t length)
+{
+	igt_assert_eq(__gem_read(fd, handle, offset, buf, length), 0);
+}
+
+static bool is_cache_coherent(int fd, uint32_t handle)
+{
+	return gem_get_caching(fd, handle) != I915_CACHING_NONE;
+}
+
+static void mmap_write(int fd, uint32_t handle, uint64_t offset,
+		       const void *buf, uint64_t length)
+{
+	void *map = NULL;
+
+	if (!length)
+		return;
+
+	if (is_cache_coherent(fd, handle)) {
+		/* offset arg for mmap functions must be 0 */
+		map = __gem_mmap__cpu_coherent(fd, handle, 0, offset + length,
+					       PROT_READ | PROT_WRITE);
+		if (map)
+			gem_set_domain(fd, handle,
+				       I915_GEM_DOMAIN_CPU, I915_GEM_DOMAIN_CPU);
+	}
+
+	if (!map) {
+		map = __gem_mmap_offset__wc(fd, handle, 0, offset + length,
+					    PROT_READ | PROT_WRITE);
+		if (!map)
+			map = gem_mmap__wc(fd, handle, 0, offset + length,
+					   PROT_READ | PROT_WRITE);
+		gem_set_domain(fd, handle,
+			       I915_GEM_DOMAIN_WC, I915_GEM_DOMAIN_WC);
+	}
+
+	memcpy(map + offset, buf, length);
+	munmap(map, offset + length);
+}
+
+/**
+ * gem_write:
+ * @fd: open i915 drm file descriptor
+ * @handle: gem buffer object handle
+ * @offset: offset within the buffer of the subrange
+ * @buf: pointer to the data to write into the buffer
+ * @length: size of the subrange
+ *
+ * This wraps the PWRITE ioctl, which is to upload a linear data to a subrange
+ * of a gem buffer object.
+ */
+void gem_write(int fd, uint32_t handle, uint64_t offset, const void *buf, uint64_t length)
+{
+	mmap_write(fd, handle, offset, buf, length);
+}
+
+static void mmap_read(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t length)
+{
+	void *map = NULL;
+
+	if (!length)
+		return;
+
+	if (gem_has_llc(fd) || is_cache_coherent(fd, handle)) {
+		/* offset arg for mmap functions must be 0 */
+		map = __gem_mmap__cpu_coherent(fd, handle, 0,
+					       offset + length, PROT_READ);
+		if (map)
+			gem_set_domain(fd, handle, I915_GEM_DOMAIN_CPU, 0);
+	}
+
+	if (!map) {
+		map = __gem_mmap_offset__wc(fd, handle, 0, offset + length,
+					    PROT_READ);
+		if (!map)
+			map = gem_mmap__wc(fd, handle, 0, offset + length,
+					   PROT_READ);
+		gem_set_domain(fd, handle, I915_GEM_DOMAIN_WC, 0);
+	}
+
+	memcpy(buf, map + offset, length);
+	munmap(map, offset + length);
+}
+
 /**
  * gem_read:
  * @fd: open i915 drm file descriptor
@@ -386,7 +483,7 @@ int __gem_read(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t len
  */
 void gem_read(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t length)
 {
-	igt_assert_eq(__gem_read(fd, handle, offset, buf, length), 0);
+	mmap_read(fd, handle, offset, buf, length);
 }
 
 int __gem_set_domain(int fd, uint32_t handle, uint32_t read, uint32_t write)
diff --git a/lib/ioctl_wrappers.h b/lib/ioctl_wrappers.h
index 69e198419c..13ff799aab 100644
--- a/lib/ioctl_wrappers.h
+++ b/lib/ioctl_wrappers.h
@@ -68,8 +68,10 @@ uint32_t gem_flink(int fd, uint32_t handle);
 uint32_t gem_open(int fd, uint32_t name);
 void gem_close(int fd, uint32_t handle);
 int __gem_write(int fd, uint32_t handle, uint64_t offset, const void *buf, uint64_t length);
-void gem_write(int fd, uint32_t handle, uint64_t offset,  const void *buf, uint64_t length);
+void gem_pwrite(int fd, uint32_t handle, uint64_t offset,  const void *buf, uint64_t length);
 int __gem_read(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t length);
+void gem_pread(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t length);
+void gem_write(int fd, uint32_t handle, uint64_t offset,  const void *buf, uint64_t length);
 void gem_read(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t length);
 int __gem_set_domain(int fd, uint32_t handle, uint32_t read, uint32_t write);
 void gem_set_domain(int fd, uint32_t handle, uint32_t read, uint32_t write);
diff --git a/tests/i915/gem_exec_parallel.c b/tests/i915/gem_exec_parallel.c
index d3dd06a654..b3b6217f7a 100644
--- a/tests/i915/gem_exec_parallel.c
+++ b/tests/i915/gem_exec_parallel.c
@@ -151,7 +151,8 @@ static void *thread(void *data)
 	return NULL;
 }
 
-static void check_bo(int fd, uint32_t handle, int pass, struct thread *threads)
+static void check_bo(int fd, uint32_t flags, uint32_t handle, int pass,
+		     struct thread *threads)
 {
 	uint32_t x = hash32(handle * pass) % 1024;
 	uint32_t result;
@@ -161,7 +162,10 @@ static void check_bo(int fd, uint32_t handle, int pass, struct thread *threads)
 
 	igt_debug("Verifying result (pass=%d, handle=%d, thread %d)\n",
 		  pass, handle, x);
-	gem_read(fd, handle, x * sizeof(result), &result, sizeof(result));
+	if (flags & USERPTR)
+		gem_pread(fd, handle, x * sizeof(result), &result, sizeof(result));
+	else
+		gem_read(fd, handle, x * sizeof(result), &result, sizeof(result));
 	igt_assert_eq_u32(result, x);
 }
 
@@ -258,7 +262,7 @@ static void all(int fd, struct intel_execution_engine2 *engine, unsigned flags)
 		pthread_join(threads[i].thread, NULL);
 
 	for (i = 0; i < NUMOBJ; i++) {
-		check_bo(fd, handle[i], i, threads);
+		check_bo(fd, flags, handle[i], i, threads);
 		handle_close(fd, flags, handle[i], arg[i]);
 	}
 
diff --git a/tests/i915/gem_madvise.c b/tests/i915/gem_madvise.c
index 623c8b0913..56cc8a0de9 100644
--- a/tests/i915/gem_madvise.c
+++ b/tests/i915/gem_madvise.c
@@ -175,7 +175,7 @@ dontneed_before_exec(void)
 	memset(&exec, 0, sizeof(exec));
 
 	exec.handle = gem_create(fd, OBJECT_SIZE);
-	gem_write(fd, exec.handle, 0, buf, sizeof(buf));
+	gem_pwrite(fd, exec.handle, 0, buf, sizeof(buf));
 	gem_madvise(fd, exec.handle, I915_MADV_DONTNEED);
 
 	execbuf.buffers_ptr = to_user_pointer(&exec);
diff --git a/tests/prime_vgem.c b/tests/prime_vgem.c
index 07ff69a245..2d4d283141 100644
--- a/tests/prime_vgem.c
+++ b/tests/prime_vgem.c
@@ -59,7 +59,7 @@ static void test_read(int vgem, int i915)
 
 	for (i = 0; i < 1024; i++) {
 		uint32_t tmp;
-		gem_read(i915, handle, 4096*i, &tmp, sizeof(tmp));
+		gem_pread(i915, handle, 4096*i, &tmp, sizeof(tmp));
 		igt_assert_eq(tmp, i);
 	}
 	gem_close(i915, handle);
@@ -94,14 +94,14 @@ static void test_fence_read(int i915, int vgem)
 		close(slave[1]);
 		for (i = 0; i < 1024; i++) {
 			uint32_t tmp;
-			gem_read(i915, handle, 4096*i, &tmp, sizeof(tmp));
+			gem_pread(i915, handle, 4096*i, &tmp, sizeof(tmp));
 			igt_assert_eq(tmp, 0);
 		}
 		write(master[1], &child, sizeof(child));
 		read(slave[0], &child, sizeof(child));
 		for (i = 0; i < 1024; i++) {
 			uint32_t tmp;
-			gem_read(i915, handle, 4096*i, &tmp, sizeof(tmp));
+			gem_pread(i915, handle, 4096*i, &tmp, sizeof(tmp));
 			igt_assert_eq(tmp, i);
 		}
 		gem_close(i915, handle);
@@ -279,7 +279,7 @@ static void test_write(int vgem, int i915)
 	gem_close(vgem, scratch.handle);
 
 	for (i = 0; i < 1024; i++)
-		gem_write(i915, handle, 4096*i, &i, sizeof(i));
+		gem_pwrite(i915, handle, 4096*i, &i, sizeof(i));
 	gem_close(i915, handle);
 
 	for (i = 0; i < 1024; i++)
-- 
2.29.2

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

^ permalink raw reply related	[flat|nested] 15+ messages in thread
* [igt-dev] [CI i-g-t] lib/ioctl_wrappers: Handle PREAD/PWRITE ioctls not supported in gem_read/write
@ 2021-01-21  2:20 Ashutosh Dixit
  0 siblings, 0 replies; 15+ messages in thread
From: Ashutosh Dixit @ 2021-01-21  2:20 UTC (permalink / raw)
  To: igt-dev

FOR CI ONLY. PLEASE DON'T REVIEW.

Trial patch to replace PREAD/PWRITE ioctls with mmap + memcpy in gem_read/write.

v11: Simplified patch to use previous __gem_read/__gem_write
v12: Fix CI failures in gem_madvise and gen9_exec_parse
v13: Skip mmap for 0 length read/write's
v14: Rebase on latest master, remove redundant asserts/checks in mmap_read/write

Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
---
 lib/ioctl_wrappers.c     | 103 +++++++++++++++++++++++++++++++++++++--
 lib/ioctl_wrappers.h     |   4 +-
 tests/i915/gem_madvise.c |   2 +-
 tests/prime_vgem.c       |   8 +--
 4 files changed, 108 insertions(+), 9 deletions(-)

diff --git a/lib/ioctl_wrappers.c b/lib/ioctl_wrappers.c
index 45415621b7..82eeeb447a 100644
--- a/lib/ioctl_wrappers.c
+++ b/lib/ioctl_wrappers.c
@@ -56,6 +56,7 @@
 #include "igt_debugfs.h"
 #include "igt_sysfs.h"
 #include "config.h"
+#include "i915/gem_mman.h"
 
 #ifdef HAVE_VALGRIND
 #include <valgrind/valgrind.h>
@@ -342,7 +343,7 @@ int __gem_write(int fd, uint32_t handle, uint64_t offset, const void *buf, uint6
 }
 
 /**
- * gem_write:
+ * gem_pwrite:
  * @fd: open i915 drm file descriptor
  * @handle: gem buffer object handle
  * @offset: offset within the buffer of the subrange
@@ -352,7 +353,7 @@ int __gem_write(int fd, uint32_t handle, uint64_t offset, const void *buf, uint6
  * This wraps the PWRITE ioctl, which is to upload a linear data to a subrange
  * of a gem buffer object.
  */
-void gem_write(int fd, uint32_t handle, uint64_t offset, const void *buf, uint64_t length)
+void gem_pwrite(int fd, uint32_t handle, uint64_t offset, const void *buf, uint64_t length)
 {
 	igt_assert_eq(__gem_write(fd, handle, offset, buf, length), 0);
 }
@@ -373,6 +374,102 @@ int __gem_read(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t len
 		err = -errno;
 	return err;
 }
+/**
+ * gem_pread:
+ * @fd: open i915 drm file descriptor
+ * @handle: gem buffer object handle
+ * @offset: offset within the buffer of the subrange
+ * @buf: pointer to the data to read into
+ * @length: size of the subrange
+ *
+ * This wraps the PREAD ioctl, which is to download a linear data to a subrange
+ * of a gem buffer object.
+ */
+void gem_pread(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t length)
+{
+	igt_assert_eq(__gem_read(fd, handle, offset, buf, length), 0);
+}
+
+static bool is_cache_coherent(int fd, uint32_t handle)
+{
+	return gem_get_caching(fd, handle) != I915_CACHING_NONE;
+}
+
+static void mmap_write(int fd, uint32_t handle, uint64_t offset,
+		       const void *buf, uint64_t length)
+{
+	void *map = NULL;
+
+	if (!length)
+		return;
+
+	if (is_cache_coherent(fd, handle)) {
+		/* offset arg for mmap functions must be 0 */
+		map = __gem_mmap__cpu_coherent(fd, handle, 0, offset + length,
+					       PROT_READ | PROT_WRITE);
+		if (map)
+			gem_set_domain(fd, handle,
+				       I915_GEM_DOMAIN_CPU, I915_GEM_DOMAIN_CPU);
+	}
+
+	if (!map) {
+		map = __gem_mmap_offset__wc(fd, handle, 0, offset + length,
+					    PROT_READ | PROT_WRITE);
+		if (!map)
+			map = gem_mmap__wc(fd, handle, 0, offset + length,
+					   PROT_READ | PROT_WRITE);
+		gem_set_domain(fd, handle,
+			       I915_GEM_DOMAIN_WC, I915_GEM_DOMAIN_WC);
+	}
+
+	memcpy(map + offset, buf, length);
+	munmap(map, offset + length);
+}
+
+/**
+ * gem_write:
+ * @fd: open i915 drm file descriptor
+ * @handle: gem buffer object handle
+ * @offset: offset within the buffer of the subrange
+ * @buf: pointer to the data to write into the buffer
+ * @length: size of the subrange
+ *
+ * This wraps the PWRITE ioctl, which is to upload a linear data to a subrange
+ * of a gem buffer object.
+ */
+void gem_write(int fd, uint32_t handle, uint64_t offset, const void *buf, uint64_t length)
+{
+	mmap_write(fd, handle, offset, buf, length);
+}
+
+static void mmap_read(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t length)
+{
+	void *map = NULL;
+
+	if (!length)
+		return;
+
+	if (gem_has_llc(fd) || is_cache_coherent(fd, handle)) {
+		/* offset arg for mmap functions must be 0 */
+		map = __gem_mmap__cpu_coherent(fd, handle, 0,
+					       offset + length, PROT_READ);
+		if (map)
+			gem_set_domain(fd, handle, I915_GEM_DOMAIN_CPU, 0);
+	}
+
+	if (!map) {
+		map = __gem_mmap_offset__wc(fd, handle, 0, offset + length,
+					    PROT_READ);
+		if (!map)
+			map = gem_mmap__wc(fd, handle, 0, offset + length,
+					   PROT_READ);
+		gem_set_domain(fd, handle, I915_GEM_DOMAIN_WC, 0);
+	}
+
+	memcpy(buf, map + offset, length);
+	munmap(map, offset + length);
+}
+
 /**
  * gem_read:
  * @fd: open i915 drm file descriptor
@@ -386,7 +483,7 @@ int __gem_read(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t len
  */
 void gem_read(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t length)
 {
-	igt_assert_eq(__gem_read(fd, handle, offset, buf, length), 0);
+	mmap_read(fd, handle, offset, buf, length);
 }
 
 int __gem_set_domain(int fd, uint32_t handle, uint32_t read, uint32_t write)
diff --git a/lib/ioctl_wrappers.h b/lib/ioctl_wrappers.h
index 69e198419c..13ff799aab 100644
--- a/lib/ioctl_wrappers.h
+++ b/lib/ioctl_wrappers.h
@@ -68,8 +68,10 @@ uint32_t gem_flink(int fd, uint32_t handle);
 uint32_t gem_open(int fd, uint32_t name);
 void gem_close(int fd, uint32_t handle);
 int __gem_write(int fd, uint32_t handle, uint64_t offset, const void *buf, uint64_t length);
-void gem_write(int fd, uint32_t handle, uint64_t offset,  const void *buf, uint64_t length);
+void gem_pwrite(int fd, uint32_t handle, uint64_t offset,  const void *buf, uint64_t length);
 int __gem_read(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t length);
+void gem_pread(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t length);
+void gem_write(int fd, uint32_t handle, uint64_t offset,  const void *buf, uint64_t length);
 void gem_read(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t length);
 int __gem_set_domain(int fd, uint32_t handle, uint32_t read, uint32_t write);
 void gem_set_domain(int fd, uint32_t handle, uint32_t read, uint32_t write);
diff --git a/tests/i915/gem_madvise.c b/tests/i915/gem_madvise.c
index 623c8b0913..56cc8a0de9 100644
--- a/tests/i915/gem_madvise.c
+++ b/tests/i915/gem_madvise.c
@@ -175,7 +175,7 @@ dontneed_before_exec(void)
 	memset(&exec, 0, sizeof(exec));
 
 	exec.handle = gem_create(fd, OBJECT_SIZE);
-	gem_write(fd, exec.handle, 0, buf, sizeof(buf));
+	gem_pwrite(fd, exec.handle, 0, buf, sizeof(buf));
 	gem_madvise(fd, exec.handle, I915_MADV_DONTNEED);
 
 	execbuf.buffers_ptr = to_user_pointer(&exec);
diff --git a/tests/prime_vgem.c b/tests/prime_vgem.c
index 07ff69a245..2d4d283141 100644
--- a/tests/prime_vgem.c
+++ b/tests/prime_vgem.c
@@ -59,7 +59,7 @@ static void test_read(int vgem, int i915)
 
 	for (i = 0; i < 1024; i++) {
 		uint32_t tmp;
-		gem_read(i915, handle, 4096*i, &tmp, sizeof(tmp));
+		gem_pread(i915, handle, 4096*i, &tmp, sizeof(tmp));
 		igt_assert_eq(tmp, i);
 	}
 	gem_close(i915, handle);
@@ -94,14 +94,14 @@ static void test_fence_read(int i915, int vgem)
 		close(slave[1]);
 		for (i = 0; i < 1024; i++) {
 			uint32_t tmp;
-			gem_read(i915, handle, 4096*i, &tmp, sizeof(tmp));
+			gem_pread(i915, handle, 4096*i, &tmp, sizeof(tmp));
 			igt_assert_eq(tmp, 0);
 		}
 		write(master[1], &child, sizeof(child));
 		read(slave[0], &child, sizeof(child));
 		for (i = 0; i < 1024; i++) {
 			uint32_t tmp;
-			gem_read(i915, handle, 4096*i, &tmp, sizeof(tmp));
+			gem_pread(i915, handle, 4096*i, &tmp, sizeof(tmp));
 			igt_assert_eq(tmp, i);
 		}
 		gem_close(i915, handle);
@@ -279,7 +279,7 @@ static void test_write(int vgem, int i915)
 	gem_close(vgem, scratch.handle);
 
 	for (i = 0; i < 1024; i++)
-		gem_write(i915, handle, 4096*i, &i, sizeof(i));
+		gem_pwrite(i915, handle, 4096*i, &i, sizeof(i));
 	gem_close(i915, handle);
 
 	for (i = 0; i < 1024; i++)
-- 
2.29.2

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

^ permalink raw reply related	[flat|nested] 15+ messages in thread
* [igt-dev] [CI i-g-t] lib/ioctl_wrappers: Handle PREAD/PWRITE ioctls not supported in gem_read/write
@ 2020-09-06 23:36 Ashutosh Dixit
  0 siblings, 0 replies; 15+ messages in thread
From: Ashutosh Dixit @ 2020-09-06 23:36 UTC (permalink / raw)
  To: igt-dev

FOR CI ONLY. PLEASE DON'T REVIEW.

Trial patch to replace PREAD/PWRITE ioctls with mmap + memcpy in gem_read/write.

v11: Simplified patch to use previous __gem_read/__gem_write
v12: Fix CI failures in gem_madvise and gen9_exec_parse
v13: Skip mmap for 0 length read/write's

Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
---
 lib/ioctl_wrappers.c     | 107 +++++++++++++++++++++++++++++++++++++--
 lib/ioctl_wrappers.h     |   4 +-
 tests/i915/gem_madvise.c |   2 +-
 tests/prime_vgem.c       |   8 +--
 4 files changed, 112 insertions(+), 9 deletions(-)

diff --git a/lib/ioctl_wrappers.c b/lib/ioctl_wrappers.c
index 3781286d8..4c660ca3a 100644
--- a/lib/ioctl_wrappers.c
+++ b/lib/ioctl_wrappers.c
@@ -55,6 +55,7 @@
 #include "igt_debugfs.h"
 #include "igt_sysfs.h"
 #include "config.h"
+#include "i915/gem_mman.h"
 
 #ifdef HAVE_VALGRIND
 #include <valgrind/valgrind.h>
@@ -341,7 +342,7 @@ int __gem_write(int fd, uint32_t handle, uint64_t offset, const void *buf, uint6
 }
 
 /**
- * gem_write:
+ * gem_pwrite:
  * @fd: open i915 drm file descriptor
  * @handle: gem buffer object handle
  * @offset: offset within the buffer of the subrange
@@ -351,7 +352,7 @@ int __gem_write(int fd, uint32_t handle, uint64_t offset, const void *buf, uint6
  * This wraps the PWRITE ioctl, which is to upload a linear data to a subrange
  * of a gem buffer object.
  */
-void gem_write(int fd, uint32_t handle, uint64_t offset, const void *buf, uint64_t length)
+void gem_pwrite(int fd, uint32_t handle, uint64_t offset, const void *buf, uint64_t length)
 {
 	igt_assert_eq(__gem_write(fd, handle, offset, buf, length), 0);
 }
@@ -372,6 +373,106 @@ int __gem_read(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t len
 		err = -errno;
 	return err;
 }
+/**
+ * gem_pread:
+ * @fd: open i915 drm file descriptor
+ * @handle: gem buffer object handle
+ * @offset: offset within the buffer of the subrange
+ * @buf: pointer to the data to read into
+ * @length: size of the subrange
+ *
+ * This wraps the PREAD ioctl, which is to download a linear data to a subrange
+ * of a gem buffer object.
+ */
+void gem_pread(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t length)
+{
+	igt_assert_eq(__gem_read(fd, handle, offset, buf, length), 0);
+}
+
+static bool is_cache_coherent(int fd, uint32_t handle)
+{
+	return gem_get_caching(fd, handle) != I915_CACHING_NONE;
+}
+
+static void mmap_write(int fd, uint32_t handle, uint64_t offset,
+		       const void *buf, uint64_t length)
+{
+	void *map = NULL;
+
+	if (!length)
+		return;
+
+	if (is_cache_coherent(fd, handle)) {
+		/* offset arg for mmap functions must be 0 */
+		map = __gem_mmap__cpu_coherent(fd, handle, 0, offset + length,
+					       PROT_READ | PROT_WRITE);
+		if (map)
+			gem_set_domain(fd, handle,
+				       I915_GEM_DOMAIN_CPU, I915_GEM_DOMAIN_CPU);
+	}
+
+	if (!map) {
+		map = __gem_mmap_offset__wc(fd, handle, 0, offset + length,
+					    PROT_READ | PROT_WRITE);
+		if (!map)
+			map = gem_mmap__wc(fd, handle, 0, offset + length,
+					   PROT_READ | PROT_WRITE);
+		if (map)
+			gem_set_domain(fd, handle,
+				       I915_GEM_DOMAIN_WC, I915_GEM_DOMAIN_WC);
+	}
+
+	igt_assert(map);
+	memcpy(map + offset, buf, length);
+	munmap(map, offset + length);
+}
+
+/**
+ * gem_write:
+ * @fd: open i915 drm file descriptor
+ * @handle: gem buffer object handle
+ * @offset: offset within the buffer of the subrange
+ * @buf: pointer to the data to write into the buffer
+ * @length: size of the subrange
+ *
+ * This wraps the PWRITE ioctl, which is to upload a linear data to a subrange
+ * of a gem buffer object.
+ */
+void gem_write(int fd, uint32_t handle, uint64_t offset, const void *buf, uint64_t length)
+{
+	mmap_write(fd, handle, offset, buf, length);
+}
+
+static void mmap_read(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t length)
+{
+	void *map = NULL;
+
+	if (!length)
+		return;
+
+	if (gem_has_llc(fd) || is_cache_coherent(fd, handle)) {
+		/* offset arg for mmap functions must be 0 */
+		map = __gem_mmap__cpu_coherent(fd, handle, 0,
+					       offset + length, PROT_READ);
+		if (map)
+			gem_set_domain(fd, handle, I915_GEM_DOMAIN_CPU, 0);
+	}
+
+	if (!map) {
+		map = __gem_mmap_offset__wc(fd, handle, 0, offset + length,
+					    PROT_READ);
+		if (!map)
+			map = gem_mmap__wc(fd, handle, 0, offset + length,
+					   PROT_READ);
+		if (map)
+			gem_set_domain(fd, handle, I915_GEM_DOMAIN_WC, 0);
+	}
+
+	igt_assert(map);
+	memcpy(buf, map + offset, length);
+	munmap(map, offset + length);
+}
+
 /**
  * gem_read:
  * @fd: open i915 drm file descriptor
@@ -385,7 +486,7 @@ int __gem_read(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t len
  */
 void gem_read(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t length)
 {
-	igt_assert_eq(__gem_read(fd, handle, offset, buf, length), 0);
+	mmap_read(fd, handle, offset, buf, length);
 }
 
 int __gem_set_domain(int fd, uint32_t handle, uint32_t read, uint32_t write)
diff --git a/lib/ioctl_wrappers.h b/lib/ioctl_wrappers.h
index 870ac8b7b..143a397ea 100644
--- a/lib/ioctl_wrappers.h
+++ b/lib/ioctl_wrappers.h
@@ -68,8 +68,10 @@ uint32_t gem_flink(int fd, uint32_t handle);
 uint32_t gem_open(int fd, uint32_t name);
 void gem_close(int fd, uint32_t handle);
 int __gem_write(int fd, uint32_t handle, uint64_t offset, const void *buf, uint64_t length);
-void gem_write(int fd, uint32_t handle, uint64_t offset,  const void *buf, uint64_t length);
+void gem_pwrite(int fd, uint32_t handle, uint64_t offset,  const void *buf, uint64_t length);
 int __gem_read(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t length);
+void gem_pread(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t length);
+void gem_write(int fd, uint32_t handle, uint64_t offset,  const void *buf, uint64_t length);
 void gem_read(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t length);
 int __gem_set_domain(int fd, uint32_t handle, uint32_t read, uint32_t write);
 void gem_set_domain(int fd, uint32_t handle, uint32_t read, uint32_t write);
diff --git a/tests/i915/gem_madvise.c b/tests/i915/gem_madvise.c
index 54c9befff..f26d5a79c 100644
--- a/tests/i915/gem_madvise.c
+++ b/tests/i915/gem_madvise.c
@@ -174,7 +174,7 @@ dontneed_before_exec(void)
 	memset(&exec, 0, sizeof(exec));
 
 	exec.handle = gem_create(fd, OBJECT_SIZE);
-	gem_write(fd, exec.handle, 0, buf, sizeof(buf));
+	gem_pwrite(fd, exec.handle, 0, buf, sizeof(buf));
 	gem_madvise(fd, exec.handle, I915_MADV_DONTNEED);
 
 	execbuf.buffers_ptr = to_user_pointer(&exec);
diff --git a/tests/prime_vgem.c b/tests/prime_vgem.c
index 38e2026aa..3f3b5f602 100644
--- a/tests/prime_vgem.c
+++ b/tests/prime_vgem.c
@@ -59,7 +59,7 @@ static void test_read(int vgem, int i915)
 
 	for (i = 0; i < 1024; i++) {
 		uint32_t tmp;
-		gem_read(i915, handle, 4096*i, &tmp, sizeof(tmp));
+		gem_pread(i915, handle, 4096*i, &tmp, sizeof(tmp));
 		igt_assert_eq(tmp, i);
 	}
 	gem_close(i915, handle);
@@ -94,14 +94,14 @@ static void test_fence_read(int i915, int vgem)
 		close(slave[1]);
 		for (i = 0; i < 1024; i++) {
 			uint32_t tmp;
-			gem_read(i915, handle, 4096*i, &tmp, sizeof(tmp));
+			gem_pread(i915, handle, 4096*i, &tmp, sizeof(tmp));
 			igt_assert_eq(tmp, 0);
 		}
 		write(master[1], &child, sizeof(child));
 		read(slave[0], &child, sizeof(child));
 		for (i = 0; i < 1024; i++) {
 			uint32_t tmp;
-			gem_read(i915, handle, 4096*i, &tmp, sizeof(tmp));
+			gem_pread(i915, handle, 4096*i, &tmp, sizeof(tmp));
 			igt_assert_eq(tmp, i);
 		}
 		gem_close(i915, handle);
@@ -279,7 +279,7 @@ static void test_write(int vgem, int i915)
 	gem_close(vgem, scratch.handle);
 
 	for (i = 0; i < 1024; i++)
-		gem_write(i915, handle, 4096*i, &i, sizeof(i));
+		gem_pwrite(i915, handle, 4096*i, &i, sizeof(i));
 	gem_close(i915, handle);
 
 	for (i = 0; i < 1024; i++)
-- 
2.27.0.112.g101b3204f3

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

^ permalink raw reply related	[flat|nested] 15+ messages in thread
* [igt-dev] [CI i-g-t] lib/ioctl_wrappers: Handle PREAD/PWRITE ioctls not supported in gem_read/write
@ 2020-09-06 17:38 Ashutosh Dixit
  0 siblings, 0 replies; 15+ messages in thread
From: Ashutosh Dixit @ 2020-09-06 17:38 UTC (permalink / raw)
  To: igt-dev

FOR CI ONLY. PLEASE DON'T REVIEW.

Trial patch to replace PREAD/PWRITE ioctls with mmap + memcpy in gem_read/write.

v11: Simplified patch to use previous __gem_read/__gem_write
v12: Fix CI failures in gem_madvise and gen9_exec_parse

Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
---
 lib/ioctl_wrappers.c         | 101 +++++++++++++++++++++++++++++++++--
 lib/ioctl_wrappers.h         |   4 +-
 tests/i915/gem_madvise.c     |   2 +-
 tests/i915/gen9_exec_parse.c |   2 +-
 tests/prime_vgem.c           |   8 +--
 5 files changed, 107 insertions(+), 10 deletions(-)

diff --git a/lib/ioctl_wrappers.c b/lib/ioctl_wrappers.c
index 3781286d8..65f4539f3 100644
--- a/lib/ioctl_wrappers.c
+++ b/lib/ioctl_wrappers.c
@@ -55,6 +55,7 @@
 #include "igt_debugfs.h"
 #include "igt_sysfs.h"
 #include "config.h"
+#include "i915/gem_mman.h"
 
 #ifdef HAVE_VALGRIND
 #include <valgrind/valgrind.h>
@@ -341,7 +342,7 @@ int __gem_write(int fd, uint32_t handle, uint64_t offset, const void *buf, uint6
 }
 
 /**
- * gem_write:
+ * gem_pwrite:
  * @fd: open i915 drm file descriptor
  * @handle: gem buffer object handle
  * @offset: offset within the buffer of the subrange
@@ -351,7 +352,7 @@ int __gem_write(int fd, uint32_t handle, uint64_t offset, const void *buf, uint6
  * This wraps the PWRITE ioctl, which is to upload a linear data to a subrange
  * of a gem buffer object.
  */
-void gem_write(int fd, uint32_t handle, uint64_t offset, const void *buf, uint64_t length)
+void gem_pwrite(int fd, uint32_t handle, uint64_t offset, const void *buf, uint64_t length)
 {
 	igt_assert_eq(__gem_write(fd, handle, offset, buf, length), 0);
 }
@@ -372,6 +373,100 @@ int __gem_read(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t len
 		err = -errno;
 	return err;
 }
+/**
+ * gem_pread:
+ * @fd: open i915 drm file descriptor
+ * @handle: gem buffer object handle
+ * @offset: offset within the buffer of the subrange
+ * @buf: pointer to the data to read into
+ * @length: size of the subrange
+ *
+ * This wraps the PREAD ioctl, which is to download a linear data to a subrange
+ * of a gem buffer object.
+ */
+void gem_pread(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t length)
+{
+	igt_assert_eq(__gem_read(fd, handle, offset, buf, length), 0);
+}
+
+static bool is_cache_coherent(int fd, uint32_t handle)
+{
+	return gem_get_caching(fd, handle) != I915_CACHING_NONE;
+}
+
+static void mmap_write(int fd, uint32_t handle, uint64_t offset,
+		       const void *buf, uint64_t length)
+{
+	void *map = NULL;
+
+	if (is_cache_coherent(fd, handle)) {
+		/* offset arg for mmap functions must be 0 */
+		map = __gem_mmap__cpu_coherent(fd, handle, 0, offset + length,
+					       PROT_READ | PROT_WRITE);
+		if (map)
+			gem_set_domain(fd, handle,
+				       I915_GEM_DOMAIN_CPU, I915_GEM_DOMAIN_CPU);
+	}
+
+	if (!map) {
+		map = __gem_mmap_offset__wc(fd, handle, 0, offset + length,
+					    PROT_READ | PROT_WRITE);
+		if (!map)
+			map = gem_mmap__wc(fd, handle, 0, offset + length,
+					   PROT_READ | PROT_WRITE);
+		if (map)
+			gem_set_domain(fd, handle,
+				       I915_GEM_DOMAIN_WC, I915_GEM_DOMAIN_WC);
+	}
+
+	igt_assert(map);
+	memcpy(map + offset, buf, length);
+	munmap(map, offset + length);
+}
+
+/**
+ * gem_write:
+ * @fd: open i915 drm file descriptor
+ * @handle: gem buffer object handle
+ * @offset: offset within the buffer of the subrange
+ * @buf: pointer to the data to write into the buffer
+ * @length: size of the subrange
+ *
+ * This wraps the PWRITE ioctl, which is to upload a linear data to a subrange
+ * of a gem buffer object.
+ */
+void gem_write(int fd, uint32_t handle, uint64_t offset, const void *buf, uint64_t length)
+{
+	mmap_write(fd, handle, offset, buf, length);
+}
+
+static void mmap_read(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t length)
+{
+	void *map = NULL;
+
+	if (gem_has_llc(fd) || is_cache_coherent(fd, handle)) {
+		/* offset arg for mmap functions must be 0 */
+		map = __gem_mmap__cpu_coherent(fd, handle, 0,
+					       offset + length, PROT_READ);
+		if (map)
+			gem_set_domain(fd, handle, I915_GEM_DOMAIN_CPU, 0);
+	}
+
+	if (!map) {
+		map = __gem_mmap_offset__wc(fd, handle, 0, offset + length,
+					    PROT_READ);
+		if (!map)
+			map = gem_mmap__wc(fd, handle, 0, offset + length,
+					   PROT_READ);
+		if (map)
+			gem_set_domain(fd, handle, I915_GEM_DOMAIN_WC, 0);
+	}
+
+	igt_assert(map);
+	memcpy(buf, map + offset, length);
+	munmap(map, offset + length);
+}
+
 /**
  * gem_read:
  * @fd: open i915 drm file descriptor
@@ -385,7 +480,7 @@ int __gem_read(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t len
  */
 void gem_read(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t length)
 {
-	igt_assert_eq(__gem_read(fd, handle, offset, buf, length), 0);
+	mmap_read(fd, handle, offset, buf, length);
 }
 
 int __gem_set_domain(int fd, uint32_t handle, uint32_t read, uint32_t write)
diff --git a/lib/ioctl_wrappers.h b/lib/ioctl_wrappers.h
index 870ac8b7b..143a397ea 100644
--- a/lib/ioctl_wrappers.h
+++ b/lib/ioctl_wrappers.h
@@ -68,8 +68,10 @@ uint32_t gem_flink(int fd, uint32_t handle);
 uint32_t gem_open(int fd, uint32_t name);
 void gem_close(int fd, uint32_t handle);
 int __gem_write(int fd, uint32_t handle, uint64_t offset, const void *buf, uint64_t length);
-void gem_write(int fd, uint32_t handle, uint64_t offset,  const void *buf, uint64_t length);
+void gem_pwrite(int fd, uint32_t handle, uint64_t offset,  const void *buf, uint64_t length);
 int __gem_read(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t length);
+void gem_pread(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t length);
+void gem_write(int fd, uint32_t handle, uint64_t offset,  const void *buf, uint64_t length);
 void gem_read(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t length);
 int __gem_set_domain(int fd, uint32_t handle, uint32_t read, uint32_t write);
 void gem_set_domain(int fd, uint32_t handle, uint32_t read, uint32_t write);
diff --git a/tests/i915/gem_madvise.c b/tests/i915/gem_madvise.c
index 54c9befff..f26d5a79c 100644
--- a/tests/i915/gem_madvise.c
+++ b/tests/i915/gem_madvise.c
@@ -174,7 +174,7 @@ dontneed_before_exec(void)
 	memset(&exec, 0, sizeof(exec));
 
 	exec.handle = gem_create(fd, OBJECT_SIZE);
-	gem_write(fd, exec.handle, 0, buf, sizeof(buf));
+	gem_pwrite(fd, exec.handle, 0, buf, sizeof(buf));
 	gem_madvise(fd, exec.handle, I915_MADV_DONTNEED);
 
 	execbuf.buffers_ptr = to_user_pointer(&exec);
diff --git a/tests/i915/gen9_exec_parse.c b/tests/i915/gen9_exec_parse.c
index 8cd82f568..b5bb3fb20 100644
--- a/tests/i915/gen9_exec_parse.c
+++ b/tests/i915/gen9_exec_parse.c
@@ -144,7 +144,7 @@ static int __exec_batch(int i915, int engine, uint32_t cmd_bo,
 	struct drm_i915_gem_execbuffer2 execbuf;
 	struct drm_i915_gem_exec_object2 obj[1];
 
-	gem_write(i915, cmd_bo, 0, cmds, size);
+	gem_pwrite(i915, cmd_bo, 0, cmds, size);
 
 	memset(obj, 0, sizeof(obj));
 	obj[0].handle = cmd_bo;
diff --git a/tests/prime_vgem.c b/tests/prime_vgem.c
index 38e2026aa..3f3b5f602 100644
--- a/tests/prime_vgem.c
+++ b/tests/prime_vgem.c
@@ -59,7 +59,7 @@ static void test_read(int vgem, int i915)
 
 	for (i = 0; i < 1024; i++) {
 		uint32_t tmp;
-		gem_read(i915, handle, 4096*i, &tmp, sizeof(tmp));
+		gem_pread(i915, handle, 4096*i, &tmp, sizeof(tmp));
 		igt_assert_eq(tmp, i);
 	}
 	gem_close(i915, handle);
@@ -94,14 +94,14 @@ static void test_fence_read(int i915, int vgem)
 		close(slave[1]);
 		for (i = 0; i < 1024; i++) {
 			uint32_t tmp;
-			gem_read(i915, handle, 4096*i, &tmp, sizeof(tmp));
+			gem_pread(i915, handle, 4096*i, &tmp, sizeof(tmp));
 			igt_assert_eq(tmp, 0);
 		}
 		write(master[1], &child, sizeof(child));
 		read(slave[0], &child, sizeof(child));
 		for (i = 0; i < 1024; i++) {
 			uint32_t tmp;
-			gem_read(i915, handle, 4096*i, &tmp, sizeof(tmp));
+			gem_pread(i915, handle, 4096*i, &tmp, sizeof(tmp));
 			igt_assert_eq(tmp, i);
 		}
 		gem_close(i915, handle);
@@ -279,7 +279,7 @@ static void test_write(int vgem, int i915)
 	gem_close(vgem, scratch.handle);
 
 	for (i = 0; i < 1024; i++)
-		gem_write(i915, handle, 4096*i, &i, sizeof(i));
+		gem_pwrite(i915, handle, 4096*i, &i, sizeof(i));
 	gem_close(i915, handle);
 
 	for (i = 0; i < 1024; i++)
-- 
2.27.0.112.g101b3204f3

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

^ permalink raw reply related	[flat|nested] 15+ messages in thread
* [igt-dev] [CI i-g-t] lib/ioctl_wrappers: Handle PREAD/PWRITE ioctls not supported in gem_read/write
@ 2020-09-01 18:18 Ashutosh Dixit
  0 siblings, 0 replies; 15+ messages in thread
From: Ashutosh Dixit @ 2020-09-01 18:18 UTC (permalink / raw)
  To: igt-dev

FOR CI ONLY. PLEASE DON'T REVIEW.

Trial patch to replace PREAD/PWRITE ioctls with mmap + memcpy in gem_read/write.

Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
---
 lib/ioctl_wrappers.c           | 107 +++++++++++++++++++++++++++++++--
 lib/ioctl_wrappers.h           |   6 +-
 tests/i915/gem_madvise.c       |   2 +-
 tests/i915/gem_userptr_blits.c |   2 +-
 tests/i915/gen9_exec_parse.c   |   2 +-
 tests/prime_vgem.c             |  14 ++---
 6 files changed, 115 insertions(+), 18 deletions(-)

diff --git a/lib/ioctl_wrappers.c b/lib/ioctl_wrappers.c
index 3781286d8..4d58c6e4f 100644
--- a/lib/ioctl_wrappers.c
+++ b/lib/ioctl_wrappers.c
@@ -55,6 +55,7 @@
 #include "igt_debugfs.h"
 #include "igt_sysfs.h"
 #include "config.h"
+#include "i915/gem_mman.h"
 
 #ifdef HAVE_VALGRIND
 #include <valgrind/valgrind.h>
@@ -323,7 +324,7 @@ void gem_close(int fd, uint32_t handle)
 	do_ioctl(fd, DRM_IOCTL_GEM_CLOSE, &close_bo);
 }
 
-int __gem_write(int fd, uint32_t handle, uint64_t offset, const void *buf, uint64_t length)
+int __gem_pwrite(int fd, uint32_t handle, uint64_t offset, const void *buf, uint64_t length)
 {
 	struct drm_i915_gem_pwrite gem_pwrite;
 	int err;
@@ -341,7 +342,7 @@ int __gem_write(int fd, uint32_t handle, uint64_t offset, const void *buf, uint6
 }
 
 /**
- * gem_write:
+ * gem_pwrite:
  * @fd: open i915 drm file descriptor
  * @handle: gem buffer object handle
  * @offset: offset within the buffer of the subrange
@@ -351,12 +352,12 @@ int __gem_write(int fd, uint32_t handle, uint64_t offset, const void *buf, uint6
  * This wraps the PWRITE ioctl, which is to upload a linear data to a subrange
  * of a gem buffer object.
  */
-void gem_write(int fd, uint32_t handle, uint64_t offset, const void *buf, uint64_t length)
+void gem_pwrite(int fd, uint32_t handle, uint64_t offset, const void *buf, uint64_t length)
 {
-	igt_assert_eq(__gem_write(fd, handle, offset, buf, length), 0);
+	igt_assert_eq(__gem_pwrite(fd, handle, offset, buf, length), 0);
 }
 
-int __gem_read(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t length)
+int __gem_pread(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t length)
 {
 	struct drm_i915_gem_pread gem_pread;
 	int err;
@@ -372,6 +373,100 @@ int __gem_read(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t len
 		err = -errno;
 	return err;
 }
+/**
+ * gem_pread:
+ * @fd: open i915 drm file descriptor
+ * @handle: gem buffer object handle
+ * @offset: offset within the buffer of the subrange
+ * @buf: pointer to the data to read into
+ * @length: size of the subrange
+ *
+ * This wraps the PREAD ioctl, which is to download a linear data to a subrange
+ * of a gem buffer object.
+ */
+void gem_pread(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t length)
+{
+	igt_assert_eq(__gem_pread(fd, handle, offset, buf, length), 0);
+}
+
+static bool is_cache_coherent(int fd, uint32_t handle)
+{
+	return gem_get_caching(fd, handle) != I915_CACHING_NONE;
+}
+
+static void mmap_write(int fd, uint32_t handle, uint64_t offset,
+		       const void *buf, uint64_t length)
+{
+	void *map = NULL;
+
+	if (is_cache_coherent(fd, handle)) {
+		/* offset arg for mmap functions must be 0 */
+		map = __gem_mmap__cpu_coherent(fd, handle, 0, offset + length,
+					       PROT_READ | PROT_WRITE);
+		if (map)
+			gem_set_domain(fd, handle,
+				       I915_GEM_DOMAIN_CPU, I915_GEM_DOMAIN_CPU);
+	}
+
+	if (!map) {
+		map = __gem_mmap_offset__wc(fd, handle, 0, offset + length,
+					    PROT_READ | PROT_WRITE);
+		if (!map)
+			map = gem_mmap__wc(fd, handle, 0, offset + length,
+					   PROT_READ | PROT_WRITE);
+		if (map)
+			gem_set_domain(fd, handle,
+				       I915_GEM_DOMAIN_WC, I915_GEM_DOMAIN_WC);
+	}
+
+	igt_assert(map);
+	memcpy(map + offset, buf, length);
+	munmap(map, offset + length);
+}
+
+/**
+ * gem_write:
+ * @fd: open i915 drm file descriptor
+ * @handle: gem buffer object handle
+ * @offset: offset within the buffer of the subrange
+ * @buf: pointer to the data to write into the buffer
+ * @length: size of the subrange
+ *
+ * This wraps the PWRITE ioctl, which is to upload a linear data to a subrange
+ * of a gem buffer object.
+ */
+void gem_write(int fd, uint32_t handle, uint64_t offset, const void *buf, uint64_t length)
+{
+	mmap_write(fd, handle, offset, buf, length);
+}
+
+static void mmap_read(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t length)
+{
+	void *map = NULL;
+
+	if (gem_has_llc(fd) || is_cache_coherent(fd, handle)) {
+		/* offset arg for mmap functions must be 0 */
+		map = __gem_mmap__cpu_coherent(fd, handle, 0,
+					       offset + length, PROT_READ);
+		if (map)
+			gem_set_domain(fd, handle, I915_GEM_DOMAIN_CPU, 0);
+	}
+
+	if (!map) {
+		map = __gem_mmap_offset__wc(fd, handle, 0, offset + length,
+					    PROT_READ);
+		if (!map)
+			map = gem_mmap__wc(fd, handle, 0, offset + length,
+					   PROT_READ);
+		if (map)
+			gem_set_domain(fd, handle, I915_GEM_DOMAIN_WC, 0);
+	}
+
+	igt_assert(map);
+	memcpy(buf, map + offset, length);
+	munmap(map, offset + length);
+}
+
 /**
  * gem_read:
  * @fd: open i915 drm file descriptor
@@ -385,7 +480,7 @@ int __gem_read(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t len
  */
 void gem_read(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t length)
 {
-	igt_assert_eq(__gem_read(fd, handle, offset, buf, length), 0);
+	mmap_read(fd, handle, offset, buf, length);
 }
 
 int __gem_set_domain(int fd, uint32_t handle, uint32_t read, uint32_t write)
diff --git a/lib/ioctl_wrappers.h b/lib/ioctl_wrappers.h
index 870ac8b7b..5f83b0827 100644
--- a/lib/ioctl_wrappers.h
+++ b/lib/ioctl_wrappers.h
@@ -67,9 +67,11 @@ uint32_t gem_get_caching(int fd, uint32_t handle);
 uint32_t gem_flink(int fd, uint32_t handle);
 uint32_t gem_open(int fd, uint32_t name);
 void gem_close(int fd, uint32_t handle);
-int __gem_write(int fd, uint32_t handle, uint64_t offset, const void *buf, uint64_t length);
+int __gem_pwrite(int fd, uint32_t handle, uint64_t offset, const void *buf, uint64_t length);
+void gem_pwrite(int fd, uint32_t handle, uint64_t offset,  const void *buf, uint64_t length);
+int __gem_pread(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t length);
+void gem_pread(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t length);
 void gem_write(int fd, uint32_t handle, uint64_t offset,  const void *buf, uint64_t length);
-int __gem_read(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t length);
 void gem_read(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t length);
 int __gem_set_domain(int fd, uint32_t handle, uint32_t read, uint32_t write);
 void gem_set_domain(int fd, uint32_t handle, uint32_t read, uint32_t write);
diff --git a/tests/i915/gem_madvise.c b/tests/i915/gem_madvise.c
index 54c9befff..c88e74c7c 100644
--- a/tests/i915/gem_madvise.c
+++ b/tests/i915/gem_madvise.c
@@ -157,7 +157,7 @@ dontneed_before_pwrite(void)
 	handle = gem_create(fd, OBJECT_SIZE);
 	gem_madvise(fd, handle, I915_MADV_DONTNEED);
 
-	igt_assert_eq(__gem_write(fd, handle, 0, &bbe, sizeof(bbe)), -EFAULT);
+	igt_assert_eq(__gem_pwrite(fd, handle, 0, &bbe, sizeof(bbe)), -EFAULT);
 
 	close(fd);
 }
diff --git a/tests/i915/gem_userptr_blits.c b/tests/i915/gem_userptr_blits.c
index 268423dcd..9de8b76a9 100644
--- a/tests/i915/gem_userptr_blits.c
+++ b/tests/i915/gem_userptr_blits.c
@@ -1429,7 +1429,7 @@ static void test_readonly_pwrite(int i915)
 		char data[4096];
 
 		memset(data, page, sizeof(data));
-		igt_assert_eq(__gem_write(i915, handle, page << 12, data, sizeof(data)), -EINVAL);
+		igt_assert_eq(__gem_pwrite(i915, handle, page << 12, data, sizeof(data)), -EINVAL);
 	}
 
 	gem_close(i915, handle);
diff --git a/tests/i915/gen9_exec_parse.c b/tests/i915/gen9_exec_parse.c
index 8cd82f568..15a843481 100644
--- a/tests/i915/gen9_exec_parse.c
+++ b/tests/i915/gen9_exec_parse.c
@@ -670,7 +670,7 @@ static void test_invalid_length(const int i915, const uint32_t handle)
 		   lri_ok, 4096,
 		   0);
 
-	igt_assert_eq(__gem_write(i915, handle, 0, noops, 4097), -EINVAL);
+	igt_assert_eq(__gem_pwrite(i915, handle, 0, noops, 4097), -EINVAL);
 }
 
 struct reg {
diff --git a/tests/prime_vgem.c b/tests/prime_vgem.c
index 38e2026aa..b56eb8091 100644
--- a/tests/prime_vgem.c
+++ b/tests/prime_vgem.c
@@ -48,7 +48,7 @@ static void test_read(int vgem, int i915)
 	handle = prime_fd_to_handle(i915, dmabuf);
 	close(dmabuf);
 
-	igt_skip_on_f(__gem_read(i915, handle, 0, &i, sizeof(i)),
+	igt_skip_on_f(__gem_pread(i915, handle, 0, &i, sizeof(i)),
 		      "PREAD from dma-buf not supported on this hardware\n");
 
 	ptr = vgem_mmap(vgem, &scratch, PROT_WRITE);
@@ -59,7 +59,7 @@ static void test_read(int vgem, int i915)
 
 	for (i = 0; i < 1024; i++) {
 		uint32_t tmp;
-		gem_read(i915, handle, 4096*i, &tmp, sizeof(tmp));
+		gem_pread(i915, handle, 4096*i, &tmp, sizeof(tmp));
 		igt_assert_eq(tmp, i);
 	}
 	gem_close(i915, handle);
@@ -86,7 +86,7 @@ static void test_fence_read(int i915, int vgem)
 	handle = prime_fd_to_handle(i915, dmabuf);
 	close(dmabuf);
 
-	igt_skip_on_f(__gem_read(i915, handle, 0, &i, sizeof(i)),
+	igt_skip_on_f(__gem_pread(i915, handle, 0, &i, sizeof(i)),
 		      "PREAD from dma-buf not supported on this hardware\n");
 
 	igt_fork(child, 1) {
@@ -94,14 +94,14 @@ static void test_fence_read(int i915, int vgem)
 		close(slave[1]);
 		for (i = 0; i < 1024; i++) {
 			uint32_t tmp;
-			gem_read(i915, handle, 4096*i, &tmp, sizeof(tmp));
+			gem_pread(i915, handle, 4096*i, &tmp, sizeof(tmp));
 			igt_assert_eq(tmp, 0);
 		}
 		write(master[1], &child, sizeof(child));
 		read(slave[0], &child, sizeof(child));
 		for (i = 0; i < 1024; i++) {
 			uint32_t tmp;
-			gem_read(i915, handle, 4096*i, &tmp, sizeof(tmp));
+			gem_pread(i915, handle, 4096*i, &tmp, sizeof(tmp));
 			igt_assert_eq(tmp, i);
 		}
 		gem_close(i915, handle);
@@ -272,14 +272,14 @@ static void test_write(int vgem, int i915)
 	handle = prime_fd_to_handle(i915, dmabuf);
 	close(dmabuf);
 
-	igt_skip_on_f(__gem_write(i915, handle, 0, &i, sizeof(i)),
+	igt_skip_on_f(__gem_pwrite(i915, handle, 0, &i, sizeof(i)),
 		      "PWRITE to dma-buf not supported on this hardware\n");
 
 	ptr = vgem_mmap(vgem, &scratch, PROT_READ);
 	gem_close(vgem, scratch.handle);
 
 	for (i = 0; i < 1024; i++)
-		gem_write(i915, handle, 4096*i, &i, sizeof(i));
+		gem_pwrite(i915, handle, 4096*i, &i, sizeof(i));
 	gem_close(i915, handle);
 
 	for (i = 0; i < 1024; i++)
-- 
2.27.0.112.g101b3204f3

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

^ permalink raw reply related	[flat|nested] 15+ messages in thread
* [igt-dev] [CI i-g-t] lib/ioctl_wrappers: Handle PREAD/PWRITE ioctls not supported in gem_read/write
@ 2020-09-01 17:45 Ashutosh Dixit
  0 siblings, 0 replies; 15+ messages in thread
From: Ashutosh Dixit @ 2020-09-01 17:45 UTC (permalink / raw)
  To: igt-dev

FOR CI ONLY. PLEASE DON'T REVIEW.

Trial patch to replace PREAD/PWRITE ioctls with mmap + memcpy in gem_read/write.

Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
---
 lib/ioctl_wrappers.c           | 107 +++++++++++++++++++++++++++++++--
 lib/ioctl_wrappers.h           |   6 +-
 tests/i915/gem_madvise.c       |   2 +-
 tests/i915/gem_userptr_blits.c |   2 +-
 tests/i915/gen9_exec_parse.c   |   2 +-
 tests/prime_vgem.c             |   6 +-
 6 files changed, 111 insertions(+), 14 deletions(-)

diff --git a/lib/ioctl_wrappers.c b/lib/ioctl_wrappers.c
index 3781286d8..4d58c6e4f 100644
--- a/lib/ioctl_wrappers.c
+++ b/lib/ioctl_wrappers.c
@@ -55,6 +55,7 @@
 #include "igt_debugfs.h"
 #include "igt_sysfs.h"
 #include "config.h"
+#include "i915/gem_mman.h"
 
 #ifdef HAVE_VALGRIND
 #include <valgrind/valgrind.h>
@@ -323,7 +324,7 @@ void gem_close(int fd, uint32_t handle)
 	do_ioctl(fd, DRM_IOCTL_GEM_CLOSE, &close_bo);
 }
 
-int __gem_write(int fd, uint32_t handle, uint64_t offset, const void *buf, uint64_t length)
+int __gem_pwrite(int fd, uint32_t handle, uint64_t offset, const void *buf, uint64_t length)
 {
 	struct drm_i915_gem_pwrite gem_pwrite;
 	int err;
@@ -341,7 +342,7 @@ int __gem_write(int fd, uint32_t handle, uint64_t offset, const void *buf, uint6
 }
 
 /**
- * gem_write:
+ * gem_pwrite:
  * @fd: open i915 drm file descriptor
  * @handle: gem buffer object handle
  * @offset: offset within the buffer of the subrange
@@ -351,12 +352,12 @@ int __gem_write(int fd, uint32_t handle, uint64_t offset, const void *buf, uint6
  * This wraps the PWRITE ioctl, which is to upload a linear data to a subrange
  * of a gem buffer object.
  */
-void gem_write(int fd, uint32_t handle, uint64_t offset, const void *buf, uint64_t length)
+void gem_pwrite(int fd, uint32_t handle, uint64_t offset, const void *buf, uint64_t length)
 {
-	igt_assert_eq(__gem_write(fd, handle, offset, buf, length), 0);
+	igt_assert_eq(__gem_pwrite(fd, handle, offset, buf, length), 0);
 }
 
-int __gem_read(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t length)
+int __gem_pread(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t length)
 {
 	struct drm_i915_gem_pread gem_pread;
 	int err;
@@ -372,6 +373,100 @@ int __gem_read(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t len
 		err = -errno;
 	return err;
 }
+/**
+ * gem_pread:
+ * @fd: open i915 drm file descriptor
+ * @handle: gem buffer object handle
+ * @offset: offset within the buffer of the subrange
+ * @buf: pointer to the data to read into
+ * @length: size of the subrange
+ *
+ * This wraps the PREAD ioctl, which is to download a linear data to a subrange
+ * of a gem buffer object.
+ */
+void gem_pread(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t length)
+{
+	igt_assert_eq(__gem_pread(fd, handle, offset, buf, length), 0);
+}
+
+static bool is_cache_coherent(int fd, uint32_t handle)
+{
+	return gem_get_caching(fd, handle) != I915_CACHING_NONE;
+}
+
+static void mmap_write(int fd, uint32_t handle, uint64_t offset,
+		       const void *buf, uint64_t length)
+{
+	void *map = NULL;
+
+	if (is_cache_coherent(fd, handle)) {
+		/* offset arg for mmap functions must be 0 */
+		map = __gem_mmap__cpu_coherent(fd, handle, 0, offset + length,
+					       PROT_READ | PROT_WRITE);
+		if (map)
+			gem_set_domain(fd, handle,
+				       I915_GEM_DOMAIN_CPU, I915_GEM_DOMAIN_CPU);
+	}
+
+	if (!map) {
+		map = __gem_mmap_offset__wc(fd, handle, 0, offset + length,
+					    PROT_READ | PROT_WRITE);
+		if (!map)
+			map = gem_mmap__wc(fd, handle, 0, offset + length,
+					   PROT_READ | PROT_WRITE);
+		if (map)
+			gem_set_domain(fd, handle,
+				       I915_GEM_DOMAIN_WC, I915_GEM_DOMAIN_WC);
+	}
+
+	igt_assert(map);
+	memcpy(map + offset, buf, length);
+	munmap(map, offset + length);
+}
+
+/**
+ * gem_write:
+ * @fd: open i915 drm file descriptor
+ * @handle: gem buffer object handle
+ * @offset: offset within the buffer of the subrange
+ * @buf: pointer to the data to write into the buffer
+ * @length: size of the subrange
+ *
+ * This wraps the PWRITE ioctl, which is to upload a linear data to a subrange
+ * of a gem buffer object.
+ */
+void gem_write(int fd, uint32_t handle, uint64_t offset, const void *buf, uint64_t length)
+{
+	mmap_write(fd, handle, offset, buf, length);
+}
+
+static void mmap_read(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t length)
+{
+	void *map = NULL;
+
+	if (gem_has_llc(fd) || is_cache_coherent(fd, handle)) {
+		/* offset arg for mmap functions must be 0 */
+		map = __gem_mmap__cpu_coherent(fd, handle, 0,
+					       offset + length, PROT_READ);
+		if (map)
+			gem_set_domain(fd, handle, I915_GEM_DOMAIN_CPU, 0);
+	}
+
+	if (!map) {
+		map = __gem_mmap_offset__wc(fd, handle, 0, offset + length,
+					    PROT_READ);
+		if (!map)
+			map = gem_mmap__wc(fd, handle, 0, offset + length,
+					   PROT_READ);
+		if (map)
+			gem_set_domain(fd, handle, I915_GEM_DOMAIN_WC, 0);
+	}
+
+	igt_assert(map);
+	memcpy(buf, map + offset, length);
+	munmap(map, offset + length);
+}
+
 /**
  * gem_read:
  * @fd: open i915 drm file descriptor
@@ -385,7 +480,7 @@ int __gem_read(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t len
  */
 void gem_read(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t length)
 {
-	igt_assert_eq(__gem_read(fd, handle, offset, buf, length), 0);
+	mmap_read(fd, handle, offset, buf, length);
 }
 
 int __gem_set_domain(int fd, uint32_t handle, uint32_t read, uint32_t write)
diff --git a/lib/ioctl_wrappers.h b/lib/ioctl_wrappers.h
index 870ac8b7b..5f83b0827 100644
--- a/lib/ioctl_wrappers.h
+++ b/lib/ioctl_wrappers.h
@@ -67,9 +67,11 @@ uint32_t gem_get_caching(int fd, uint32_t handle);
 uint32_t gem_flink(int fd, uint32_t handle);
 uint32_t gem_open(int fd, uint32_t name);
 void gem_close(int fd, uint32_t handle);
-int __gem_write(int fd, uint32_t handle, uint64_t offset, const void *buf, uint64_t length);
+int __gem_pwrite(int fd, uint32_t handle, uint64_t offset, const void *buf, uint64_t length);
+void gem_pwrite(int fd, uint32_t handle, uint64_t offset,  const void *buf, uint64_t length);
+int __gem_pread(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t length);
+void gem_pread(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t length);
 void gem_write(int fd, uint32_t handle, uint64_t offset,  const void *buf, uint64_t length);
-int __gem_read(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t length);
 void gem_read(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t length);
 int __gem_set_domain(int fd, uint32_t handle, uint32_t read, uint32_t write);
 void gem_set_domain(int fd, uint32_t handle, uint32_t read, uint32_t write);
diff --git a/tests/i915/gem_madvise.c b/tests/i915/gem_madvise.c
index 54c9befff..c88e74c7c 100644
--- a/tests/i915/gem_madvise.c
+++ b/tests/i915/gem_madvise.c
@@ -157,7 +157,7 @@ dontneed_before_pwrite(void)
 	handle = gem_create(fd, OBJECT_SIZE);
 	gem_madvise(fd, handle, I915_MADV_DONTNEED);
 
-	igt_assert_eq(__gem_write(fd, handle, 0, &bbe, sizeof(bbe)), -EFAULT);
+	igt_assert_eq(__gem_pwrite(fd, handle, 0, &bbe, sizeof(bbe)), -EFAULT);
 
 	close(fd);
 }
diff --git a/tests/i915/gem_userptr_blits.c b/tests/i915/gem_userptr_blits.c
index 268423dcd..9de8b76a9 100644
--- a/tests/i915/gem_userptr_blits.c
+++ b/tests/i915/gem_userptr_blits.c
@@ -1429,7 +1429,7 @@ static void test_readonly_pwrite(int i915)
 		char data[4096];
 
 		memset(data, page, sizeof(data));
-		igt_assert_eq(__gem_write(i915, handle, page << 12, data, sizeof(data)), -EINVAL);
+		igt_assert_eq(__gem_pwrite(i915, handle, page << 12, data, sizeof(data)), -EINVAL);
 	}
 
 	gem_close(i915, handle);
diff --git a/tests/i915/gen9_exec_parse.c b/tests/i915/gen9_exec_parse.c
index 8cd82f568..15a843481 100644
--- a/tests/i915/gen9_exec_parse.c
+++ b/tests/i915/gen9_exec_parse.c
@@ -670,7 +670,7 @@ static void test_invalid_length(const int i915, const uint32_t handle)
 		   lri_ok, 4096,
 		   0);
 
-	igt_assert_eq(__gem_write(i915, handle, 0, noops, 4097), -EINVAL);
+	igt_assert_eq(__gem_pwrite(i915, handle, 0, noops, 4097), -EINVAL);
 }
 
 struct reg {
diff --git a/tests/prime_vgem.c b/tests/prime_vgem.c
index 38e2026aa..ee9d866db 100644
--- a/tests/prime_vgem.c
+++ b/tests/prime_vgem.c
@@ -48,7 +48,7 @@ static void test_read(int vgem, int i915)
 	handle = prime_fd_to_handle(i915, dmabuf);
 	close(dmabuf);
 
-	igt_skip_on_f(__gem_read(i915, handle, 0, &i, sizeof(i)),
+	igt_skip_on_f(__gem_pread(i915, handle, 0, &i, sizeof(i)),
 		      "PREAD from dma-buf not supported on this hardware\n");
 
 	ptr = vgem_mmap(vgem, &scratch, PROT_WRITE);
@@ -86,7 +86,7 @@ static void test_fence_read(int i915, int vgem)
 	handle = prime_fd_to_handle(i915, dmabuf);
 	close(dmabuf);
 
-	igt_skip_on_f(__gem_read(i915, handle, 0, &i, sizeof(i)),
+	igt_skip_on_f(__gem_pread(i915, handle, 0, &i, sizeof(i)),
 		      "PREAD from dma-buf not supported on this hardware\n");
 
 	igt_fork(child, 1) {
@@ -272,7 +272,7 @@ static void test_write(int vgem, int i915)
 	handle = prime_fd_to_handle(i915, dmabuf);
 	close(dmabuf);
 
-	igt_skip_on_f(__gem_write(i915, handle, 0, &i, sizeof(i)),
+	igt_skip_on_f(__gem_pwrite(i915, handle, 0, &i, sizeof(i)),
 		      "PWRITE to dma-buf not supported on this hardware\n");
 
 	ptr = vgem_mmap(vgem, &scratch, PROT_READ);
-- 
2.27.0.112.g101b3204f3

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

^ permalink raw reply related	[flat|nested] 15+ messages in thread
* [igt-dev] [CI i-g-t] lib/ioctl_wrappers: Handle PREAD/PWRITE ioctls not supported in gem_read/write
@ 2020-09-01  2:52 Ashutosh Dixit
  0 siblings, 0 replies; 15+ messages in thread
From: Ashutosh Dixit @ 2020-09-01  2:52 UTC (permalink / raw)
  To: igt-dev

FOR CI ONLY. PLEASE DON'T REVIEW.

Trial patch to replace PREAD/PWRITE ioctls with mmap + memcpy in
gem_read/write.

Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
---
 lib/ioctl_wrappers.c | 65 ++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 63 insertions(+), 2 deletions(-)

diff --git a/lib/ioctl_wrappers.c b/lib/ioctl_wrappers.c
index 3781286d8..7c985fe41 100644
--- a/lib/ioctl_wrappers.c
+++ b/lib/ioctl_wrappers.c
@@ -55,6 +55,7 @@
 #include "igt_debugfs.h"
 #include "igt_sysfs.h"
 #include "config.h"
+#include "i915/gem_mman.h"
 
 #ifdef HAVE_VALGRIND
 #include <valgrind/valgrind.h>
@@ -340,6 +341,11 @@ int __gem_write(int fd, uint32_t handle, uint64_t offset, const void *buf, uint6
 	return err;
 }
 
+static bool is_cache_coherent(int fd, uint32_t handle)
+{
+	return gem_get_caching(fd, handle) != I915_CACHING_NONE;
+}
+
 /**
  * gem_write:
  * @fd: open i915 drm file descriptor
@@ -353,7 +359,36 @@ int __gem_write(int fd, uint32_t handle, uint64_t offset, const void *buf, uint6
  */
 void gem_write(int fd, uint32_t handle, uint64_t offset, const void *buf, uint64_t length)
 {
-	igt_assert_eq(__gem_write(fd, handle, offset, buf, length), 0);
+	void *map = NULL;
+
+	if (is_cache_coherent(fd, handle)) {
+		map = __gem_mmap_offset__cpu(fd, handle, 0, offset + length,
+					     PROT_READ | PROT_WRITE);
+		if (!map)
+			map = __gem_mmap__cpu(fd, handle, 0, offset + length,
+					      PROT_READ | PROT_WRITE);
+
+		if (map)
+			gem_set_domain(fd, handle,
+				       I915_GEM_DOMAIN_CPU,
+				       I915_GEM_DOMAIN_CPU);
+	}
+
+	if (!map) {
+		map = __gem_mmap_offset__wc(fd, handle, 0, offset + length,
+					    PROT_READ | PROT_WRITE);
+		if (!map)
+			map = gem_mmap__wc(fd, handle, 0, offset + length,
+					   PROT_READ | PROT_WRITE);
+
+		if (map)
+			gem_set_domain(fd, handle,
+				       I915_GEM_DOMAIN_WC, I915_GEM_DOMAIN_WC);
+	}
+
+	igt_assert(map);
+	memcpy(map + offset, buf, length);
+	munmap(map, offset + length);
 }
 
 int __gem_read(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t length)
@@ -385,7 +420,33 @@ int __gem_read(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t len
  */
 void gem_read(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t length)
 {
-	igt_assert_eq(__gem_read(fd, handle, offset, buf, length), 0);
+	void *map = NULL;
+
+	if (gem_has_llc(fd) || is_cache_coherent(fd, handle)) {
+		map = __gem_mmap_offset__cpu(fd, handle, 0,
+					     offset + length, PROT_READ);
+		if (!map)
+			map = __gem_mmap__cpu(fd, handle, 0, offset + length,
+					      PROT_READ);
+
+		if (map)
+			gem_set_domain(fd, handle, I915_GEM_DOMAIN_CPU, 0);
+	}
+
+	if (!map) {
+		map = __gem_mmap_offset__wc(fd, handle, 0, offset + length,
+					    PROT_READ);
+		if (!map)
+			map = gem_mmap__wc(fd, handle, 0, offset + length,
+					   PROT_READ);
+
+		if (map)
+			gem_set_domain(fd, handle, I915_GEM_DOMAIN_WC, 0);
+	}
+
+	igt_assert(map);
+	memcpy(buf, map + offset, length);
+	munmap(map, offset + length);
 }
 
 int __gem_set_domain(int fd, uint32_t handle, uint32_t read, uint32_t write)
-- 
2.27.0.112.g101b3204f3

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

^ permalink raw reply related	[flat|nested] 15+ messages in thread
* [igt-dev] [CI i-g-t] lib/ioctl_wrappers: Handle PREAD/PWRITE ioctls not supported in gem_read/write
@ 2020-09-01  1:58 Ashutosh Dixit
  0 siblings, 0 replies; 15+ messages in thread
From: Ashutosh Dixit @ 2020-09-01  1:58 UTC (permalink / raw)
  To: igt-dev

FOR CI ONLY. PLEASE DON'T REVIEW.

Trial patch to replace PREAD/PWRITE ioctls with mmap + memcpy in
gem_read/write.

Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
---
 lib/ioctl_wrappers.c | 46 ++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 44 insertions(+), 2 deletions(-)

diff --git a/lib/ioctl_wrappers.c b/lib/ioctl_wrappers.c
index 3781286d8..0b90f4c1a 100644
--- a/lib/ioctl_wrappers.c
+++ b/lib/ioctl_wrappers.c
@@ -55,6 +55,7 @@
 #include "igt_debugfs.h"
 #include "igt_sysfs.h"
 #include "config.h"
+#include "i915/gem_mman.h"
 
 #ifdef HAVE_VALGRIND
 #include <valgrind/valgrind.h>
@@ -340,6 +341,11 @@ int __gem_write(int fd, uint32_t handle, uint64_t offset, const void *buf, uint6
 	return err;
 }
 
+static bool is_cache_coherent(int fd, uint32_t handle)
+{
+	return gem_get_caching(fd, handle) != I915_CACHING_NONE;
+}
+
 /**
  * gem_write:
  * @fd: open i915 drm file descriptor
@@ -353,7 +359,26 @@ int __gem_write(int fd, uint32_t handle, uint64_t offset, const void *buf, uint6
  */
 void gem_write(int fd, uint32_t handle, uint64_t offset, const void *buf, uint64_t length)
 {
-	igt_assert_eq(__gem_write(fd, handle, offset, buf, length), 0);
+	void *map = NULL;
+
+	if (is_cache_coherent(fd, handle)) {
+		map = __gem_mmap__cpu_coherent(fd, handle, 0, offset + length,
+					     PROT_READ | PROT_WRITE);
+		if (map)
+			gem_set_domain(fd, handle,
+				       I915_GEM_DOMAIN_CPU, I915_GEM_DOMAIN_CPU);
+	}
+
+	if (!map) {
+		map = __gem_mmap__device_coherent(fd, handle, 0, offset + length,
+					    PROT_READ | PROT_WRITE);
+		if (map)
+			gem_set_domain(fd, handle,
+				       I915_GEM_DOMAIN_WC, I915_GEM_DOMAIN_WC);
+	}
+
+	memcpy(map + offset, buf, length);
+	munmap(map, offset + length);
 }
 
 int __gem_read(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t length)
@@ -385,7 +410,24 @@ int __gem_read(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t len
  */
 void gem_read(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t length)
 {
-	igt_assert_eq(__gem_read(fd, handle, offset, buf, length), 0);
+	void *map = NULL;
+
+	if (gem_has_llc(fd) || is_cache_coherent(fd, handle)) {
+		map = __gem_mmap__cpu_coherent(fd, handle, 0,
+					       offset + length, PROT_READ);
+		if (map)
+			gem_set_domain(fd, handle, I915_GEM_DOMAIN_CPU, 0);
+	}
+
+	if (!map) {
+		map = __gem_mmap__device_coherent(fd, handle, 0, offset + length,
+						  PROT_READ);
+		if (map)
+			gem_set_domain(fd, handle, I915_GEM_DOMAIN_WC, 0);
+	}
+
+	memcpy(buf, map + offset, length);
+	munmap(map, offset + length);
 }
 
 int __gem_set_domain(int fd, uint32_t handle, uint32_t read, uint32_t write)
-- 
2.27.0.112.g101b3204f3

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

^ permalink raw reply related	[flat|nested] 15+ messages in thread
* [igt-dev] [CI i-g-t] lib/ioctl_wrappers: Handle PREAD/PWRITE ioctls not supported in gem_read/write
@ 2020-08-31 22:52 Ashutosh Dixit
  0 siblings, 0 replies; 15+ messages in thread
From: Ashutosh Dixit @ 2020-08-31 22:52 UTC (permalink / raw)
  To: igt-dev

FOR CI ONLY. PLEASE DON'T REVIEW.

Trial patch to replace PREAD/PWRITE ioctls with mmap + memcpy in
gem_read/write.

Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
---
 lib/ioctl_wrappers.c | 61 ++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 59 insertions(+), 2 deletions(-)

diff --git a/lib/ioctl_wrappers.c b/lib/ioctl_wrappers.c
index 3781286d8..b8e7118da 100644
--- a/lib/ioctl_wrappers.c
+++ b/lib/ioctl_wrappers.c
@@ -55,6 +55,7 @@
 #include "igt_debugfs.h"
 #include "igt_sysfs.h"
 #include "config.h"
+#include "i915/gem_mman.h"
 
 #ifdef HAVE_VALGRIND
 #include <valgrind/valgrind.h>
@@ -340,6 +341,11 @@ int __gem_write(int fd, uint32_t handle, uint64_t offset, const void *buf, uint6
 	return err;
 }
 
+static bool is_cache_coherent(int fd, uint32_t handle)
+{
+	return gem_get_caching(fd, handle) != I915_CACHING_NONE;
+}
+
 /**
  * gem_write:
  * @fd: open i915 drm file descriptor
@@ -353,7 +359,34 @@ int __gem_write(int fd, uint32_t handle, uint64_t offset, const void *buf, uint6
  */
 void gem_write(int fd, uint32_t handle, uint64_t offset, const void *buf, uint64_t length)
 {
-	igt_assert_eq(__gem_write(fd, handle, offset, buf, length), 0);
+	void *map = NULL;
+
+	if (is_cache_coherent(fd, handle)) {
+		map = __gem_mmap_offset__cpu(fd, handle, 0, offset + length,
+					     PROT_READ | PROT_WRITE);
+		if (!map)
+			map = __gem_mmap__cpu(fd, handle, 0, offset + length,
+					      PROT_READ | PROT_WRITE);
+
+		if (map)
+			gem_set_domain(fd, handle,
+				       I915_GEM_DOMAIN_CPU,
+				       I915_GEM_DOMAIN_CPU);
+	}
+
+	if (!map) {
+		map = __gem_mmap_offset__wc(fd, handle, 0, offset + length,
+					    PROT_READ | PROT_WRITE);
+		if (!map)
+			map = gem_mmap__wc(fd, handle, 0, offset + length,
+					   PROT_READ | PROT_WRITE);
+
+		gem_set_domain(fd, handle,
+			       I915_GEM_DOMAIN_WC, I915_GEM_DOMAIN_WC);
+	}
+
+	memcpy(map + offset, buf, length);
+	munmap(map, offset + length);
 }
 
 int __gem_read(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t length)
@@ -385,7 +418,31 @@ int __gem_read(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t len
  */
 void gem_read(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t length)
 {
-	igt_assert_eq(__gem_read(fd, handle, offset, buf, length), 0);
+	void *map = NULL;
+
+	if (gem_has_llc(fd) || is_cache_coherent(fd, handle)) {
+		map = __gem_mmap_offset__cpu(fd, handle, 0,
+					     offset + length, PROT_READ);
+		if (!map)
+			map = __gem_mmap__cpu(fd, handle, 0, offset + length,
+					      PROT_READ);
+
+		if (map)
+			gem_set_domain(fd, handle, I915_GEM_DOMAIN_CPU, 0);
+	}
+
+	if (!map) {
+		map = __gem_mmap_offset__wc(fd, handle, 0, offset + length,
+					    PROT_READ);
+		if (!map)
+			map = gem_mmap__wc(fd, handle, 0, offset + length,
+					   PROT_READ);
+
+		gem_set_domain(fd, handle, I915_GEM_DOMAIN_WC, 0);
+	}
+
+	memcpy(buf, map + offset, length);
+	munmap(map, offset + length);
 }
 
 int __gem_set_domain(int fd, uint32_t handle, uint32_t read, uint32_t write)
-- 
2.27.0.112.g101b3204f3

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

^ permalink raw reply related	[flat|nested] 15+ messages in thread
* [igt-dev] [CI i-g-t] lib/ioctl_wrappers: Handle PREAD/PWRITE ioctls not supported in gem_read/write
@ 2020-08-31 20:24 Ashutosh Dixit
  0 siblings, 0 replies; 15+ messages in thread
From: Ashutosh Dixit @ 2020-08-31 20:24 UTC (permalink / raw)
  To: igt-dev

Trial patch to replace PREAD/PWRITE ioctls with mmap + memcpy in
gem_read/write. For CI only. Please don't review.

Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
---
 lib/ioctl_wrappers.c | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

diff --git a/lib/ioctl_wrappers.c b/lib/ioctl_wrappers.c
index 3781286d8..889dec3f0 100644
--- a/lib/ioctl_wrappers.c
+++ b/lib/ioctl_wrappers.c
@@ -55,6 +55,7 @@
 #include "igt_debugfs.h"
 #include "igt_sysfs.h"
 #include "config.h"
+#include "i915/gem_mman.h"
 
 #ifdef HAVE_VALGRIND
 #include <valgrind/valgrind.h>
@@ -353,7 +354,12 @@ int __gem_write(int fd, uint32_t handle, uint64_t offset, const void *buf, uint6
  */
 void gem_write(int fd, uint32_t handle, uint64_t offset, const void *buf, uint64_t length)
 {
-	igt_assert_eq(__gem_write(fd, handle, offset, buf, length), 0);
+	/* offset arg of gem_mmap__device_coherent must be 0 */
+	void *ptr = gem_mmap__cpu_coherent(fd, handle, 0, offset + length, PROT_WRITE);
+
+	gem_set_domain(fd, handle, I915_GEM_DOMAIN_CPU, I915_GEM_DOMAIN_CPU);
+	memcpy(ptr + offset, buf, length);
+	munmap(ptr, offset + length);
 }
 
 int __gem_read(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t length)
@@ -385,7 +391,12 @@ int __gem_read(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t len
  */
 void gem_read(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t length)
 {
-	igt_assert_eq(__gem_read(fd, handle, offset, buf, length), 0);
+	/* offset arg of gem_mmap__device_coherent must be 0 */
+	void *ptr = gem_mmap__cpu_coherent(fd, handle, 0, offset + length, PROT_READ);
+
+	gem_set_domain(fd, handle, I915_GEM_DOMAIN_CPU, I915_GEM_DOMAIN_CPU);
+	memcpy(buf, ptr + offset, length);
+	munmap(ptr, offset + length);
 }
 
 int __gem_set_domain(int fd, uint32_t handle, uint32_t read, uint32_t write)
-- 
2.27.0.112.g101b3204f3

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

^ permalink raw reply related	[flat|nested] 15+ messages in thread
* [igt-dev] [CI i-g-t] lib/ioctl_wrappers: Handle PREAD/PWRITE ioctls not supported in gem_read/write
@ 2020-08-29  3:32 Ashutosh Dixit
  0 siblings, 0 replies; 15+ messages in thread
From: Ashutosh Dixit @ 2020-08-29  3:32 UTC (permalink / raw)
  To: igt-dev

Trial patch to replace PREAD/PWRITE ioctls with mmap + memcpy in
gem_read/write. For CI only. Please don't review.

Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
---
 lib/ioctl_wrappers.c | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/lib/ioctl_wrappers.c b/lib/ioctl_wrappers.c
index 3781286d8..076bcafa5 100644
--- a/lib/ioctl_wrappers.c
+++ b/lib/ioctl_wrappers.c
@@ -55,6 +55,7 @@
 #include "igt_debugfs.h"
 #include "igt_sysfs.h"
 #include "config.h"
+#include "i915/gem_mman.h"
 
 #ifdef HAVE_VALGRIND
 #include <valgrind/valgrind.h>
@@ -353,7 +354,11 @@ int __gem_write(int fd, uint32_t handle, uint64_t offset, const void *buf, uint6
  */
 void gem_write(int fd, uint32_t handle, uint64_t offset, const void *buf, uint64_t length)
 {
-	igt_assert_eq(__gem_write(fd, handle, offset, buf, length), 0);
+	/* offset arg of gem_mmap__device_coherent must be 0 */
+	void *ptr = gem_mmap__device_coherent(fd, handle, 0, offset + length, PROT_WRITE);
+
+	memcpy(ptr + offset, buf + offset, length);
+	munmap(ptr, offset + length);
 }
 
 int __gem_read(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t length)
@@ -385,7 +390,11 @@ int __gem_read(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t len
  */
 void gem_read(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t length)
 {
-	igt_assert_eq(__gem_read(fd, handle, offset, buf, length), 0);
+	/* offset arg of gem_mmap__device_coherent must be 0 */
+	void *ptr = gem_mmap__device_coherent(fd, handle, 0, offset + length, PROT_READ);
+
+	memcpy(buf + offset, ptr + offset, length);
+	munmap(ptr, offset + length);
 }
 
 int __gem_set_domain(int fd, uint32_t handle, uint32_t read, uint32_t write)
-- 
2.26.2.108.g048abe1751

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

^ permalink raw reply related	[flat|nested] 15+ messages in thread
* [igt-dev] [CI i-g-t] lib/ioctl_wrappers: Handle PREAD/PWRITE ioctls not supported in gem_read/write
@ 2020-08-29  1:53 Ashutosh Dixit
  0 siblings, 0 replies; 15+ messages in thread
From: Ashutosh Dixit @ 2020-08-29  1:53 UTC (permalink / raw)
  To: igt-dev

Trial patch to replace PREAD/PWRITE ioctls with mmap + memcpy in
gem_read/write. For CI only. Please don't review.

Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
---
 lib/ioctl_wrappers.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/lib/ioctl_wrappers.c b/lib/ioctl_wrappers.c
index 3781286d8..6955a0a09 100644
--- a/lib/ioctl_wrappers.c
+++ b/lib/ioctl_wrappers.c
@@ -55,6 +55,7 @@
 #include "igt_debugfs.h"
 #include "igt_sysfs.h"
 #include "config.h"
+#include "i915/gem_mman.h"
 
 #ifdef HAVE_VALGRIND
 #include <valgrind/valgrind.h>
@@ -353,7 +354,10 @@ int __gem_write(int fd, uint32_t handle, uint64_t offset, const void *buf, uint6
  */
 void gem_write(int fd, uint32_t handle, uint64_t offset, const void *buf, uint64_t length)
 {
-	igt_assert_eq(__gem_write(fd, handle, offset, buf, length), 0);
+	void *ptr = gem_mmap__device_coherent(fd, handle, offset, length, PROT_WRITE);
+
+	memcpy(ptr, buf + offset, length);
+	munmap(ptr, length);
 }
 
 int __gem_read(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t length)
@@ -385,7 +389,10 @@ int __gem_read(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t len
  */
 void gem_read(int fd, uint32_t handle, uint64_t offset, void *buf, uint64_t length)
 {
-	igt_assert_eq(__gem_read(fd, handle, offset, buf, length), 0);
+	void *ptr = gem_mmap__device_coherent(fd, handle, offset, length, PROT_READ);
+
+	memcpy(buf + offset, ptr, length);
+	munmap(ptr, length);
 }
 
 int __gem_set_domain(int fd, uint32_t handle, uint32_t read, uint32_t write)
-- 
2.26.2.108.g048abe1751

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

^ permalink raw reply related	[flat|nested] 15+ messages in thread
end of thread, other threads:[~2021-03-15 21:16 UTC | newest]

Thread overview: 15+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-08-29  5:09 [igt-dev] [CI i-g-t] lib/ioctl_wrappers: Handle PREAD/PWRITE ioctls not supported in gem_read/write Ashutosh Dixit
2020-08-29  5:38 ` [igt-dev] ✗ Fi.CI.BAT: failure for lib/ioctl_wrappers: Handle PREAD/PWRITE ioctls not supported in gem_read/write (rev3) Patchwork
  -- strict thread matches above, loose matches on Subject: below --
2021-03-15 21:16 [igt-dev] [CI i-g-t] lib/ioctl_wrappers: Handle PREAD/PWRITE ioctls not supported in gem_read/write Ashutosh Dixit
2021-01-21  5:52 Ashutosh Dixit
2021-01-21  2:20 Ashutosh Dixit
2020-09-06 23:36 Ashutosh Dixit
2020-09-06 17:38 Ashutosh Dixit
2020-09-01 18:18 Ashutosh Dixit
2020-09-01 17:45 Ashutosh Dixit
2020-09-01  2:52 Ashutosh Dixit
2020-09-01  1:58 Ashutosh Dixit
2020-08-31 22:52 Ashutosh Dixit
2020-08-31 20:24 Ashutosh Dixit
2020-08-29  3:32 Ashutosh Dixit
2020-08-29  1:53 Ashutosh Dixit

This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.