diff options
author | Chris Wilson <chris.p.wilson@intel.com> | 2022-03-11 13:13:16 +0100 |
---|---|---|
committer | Zbigniew Kempczyński <zbigniew.kempczynski@intel.com> | 2022-03-11 18:00:51 +0100 |
commit | 2a557449956ad2519c6d0cd893ef27e9aaf9b32d (patch) | |
tree | 1e9f07eaceb7f7d564108890d67c2b0c560cdd0d /lib | |
parent | dbabc151cbfc263e5d5810e96d908216d896b781 (diff) |
i915/gem_engine_topology: Add helpers for checking driver capabilities
If driver is able to report capabilities we want to use them in easy way.
For example it can support blitter "block_copy" (XY_BLOCK_COPY_BLT
command) and reports it in sysfs. We add then capabilities helpers to
read these properties. Helpers allows checking does driver knows
capability (by checking sysfs "known_capabilities" file) and supports it
(by checking sysfs "capabilities" file). Dedicated helper was added to
verify "block_copy" capability.
Signed-off-by: Chris Wilson <chris.p.wilson@intel.com>
Signed-off-by: Apoorva Singh <apoorva1.singh@intel.com>
Cc: Zbigniew Kempczyński <zbigniew.kempczynski@intel.com>
Cc: Arjun Melkaveri <arjun.melkaveri@intel.com>
Reviewed-by: Zbigniew Kempczyński <zbigniew.kempczynski@intel.com>
Diffstat (limited to 'lib')
-rw-r--r-- | lib/i915/gem_engine_topology.c | 39 | ||||
-rw-r--r-- | lib/i915/gem_engine_topology.h | 5 |
2 files changed, 44 insertions, 0 deletions
diff --git a/lib/i915/gem_engine_topology.c b/lib/i915/gem_engine_topology.c index bd12d0bc..ca3333c2 100644 --- a/lib/i915/gem_engine_topology.c +++ b/lib/i915/gem_engine_topology.c @@ -534,6 +534,45 @@ void gem_engine_properties_restore(int fd, const struct gem_engine_properties *s } } +static bool +__gem_engine_has_capability(int i915, const char *engine, + const char *attr, const char *cap) +{ + char buf[4096] = {}; + FILE *file; + + file = __open_attr(igt_sysfs_open(i915), "r", + "engine", engine, attr, NULL); + if (!file) + return NULL; + + fread(buf, 1, sizeof(buf) - 1, file); + fclose(file); + + return strstr(buf, cap); +} + +bool gem_engine_has_capability(int i915, const char *engine, const char *cap) +{ + return __gem_engine_has_capability(i915, engine, "capabilities", cap); +} + +bool gem_engine_has_known_capability(int i915, const char *engine, const char *cap) +{ + return __gem_engine_has_capability(i915, engine, "known_capabilities", cap); +} + +bool gem_engine_can_block_copy(int i915, const struct intel_execution_engine2 *engine) +{ + if (engine->class != I915_ENGINE_CLASS_COPY) + return false; + + if (!gem_engine_has_known_capability(i915, engine->name, "block_copy")) + return intel_gen(intel_get_drm_devid(i915)) >= 12; + + return gem_engine_has_capability(i915, engine->name, "block_copy"); +} + uint32_t gem_engine_mmio_base(int i915, const char *engine) { unsigned int mmio = 0; diff --git a/lib/i915/gem_engine_topology.h b/lib/i915/gem_engine_topology.h index b413aa8a..987f2bf9 100644 --- a/lib/i915/gem_engine_topology.h +++ b/lib/i915/gem_engine_topology.h @@ -133,6 +133,11 @@ int gem_engine_property_printf(int i915, const char *engine, const char *attr, uint32_t gem_engine_mmio_base(int i915, const char *engine); +bool gem_engine_has_capability(int i915, const char *engine, const char *cap); +bool gem_engine_has_known_capability(int i915, const char *engine, const char *cap); + +bool gem_engine_can_block_copy(int i915, const struct intel_execution_engine2 *engine); + void dyn_sysfs_engines(int i915, int engines, const char *file, void (*test)(int i915, int engine)); |