[igt-dev] [PATCH i-g-t 5/7] lib/ioctl_wrappers: update mmap_{read, write} for discrete

[Matthew Auld]

We can no longer just call get_caching or set_domain, and the mmap mode
must be FIXED. This should bring back gem_exec_basic and a few others in
CI on DG1.

Signed-off-by: Matthew Auld <matthew.auld at intel.com>
Cc: Maarten Lankhorst <maarten.lankhorst at linux.intel.com>
Cc: Daniel Vetter <daniel.vetter at ffwll.ch>
Cc: Ramalingam C <ramalingam.c at intel.com>
---
 lib/ioctl_wrappers.c | 25 +++++++++++++++++++++++--
 1 file changed, 23 insertions(+), 2 deletions(-)

diff --git a/lib/ioctl_wrappers.c b/lib/ioctl_wrappers.c
index 25c5e495..7e27a1b3 100644
--- a/lib/ioctl_wrappers.c
+++ b/lib/ioctl_wrappers.c
@@ -339,7 +339,18 @@ static void mmap_write(int fd, uint32_t handle, uint64_t offset,
 	if (!length)
 		return;
 
-	if (is_cache_coherent(fd, handle)) {
+	if (gem_has_lmem(fd)) {
+		/*
+		 * set/get_caching and set_domain are no longer supported on
+		 * discrete, also the only mmap mode supportd is FIXED.
+		 */
+		map = gem_mmap_offset__fixed(fd, handle, 0,
+					     offset + length,
+					     PROT_READ | PROT_WRITE);
+		igt_assert_eq(gem_wait(fd, handle, 0), 0);
+	}
+
+	if (!map && 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);
@@ -369,7 +380,17 @@ static void mmap_read(int fd, uint32_t handle, uint64_t offset, void *buf, uint6
 	if (!length)
 		return;
 
-	if (gem_has_llc(fd) || is_cache_coherent(fd, handle)) {
+	if (gem_has_lmem(fd)) {
+		/*
+		 * set/get_caching and set_domain are no longer supported on
+		 * discrete, also the only supported mmap mode is FIXED.
+		 */
+		map = gem_mmap_offset__fixed(fd, handle, 0,
+					     offset + length, PROT_READ);
+		igt_assert_eq(gem_wait(fd, handle, 0), 0);
+	}
+
+	if (!map && (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);
-- 
2.26.3