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lib/ioctl_wrappers: Add gem_has_softpin

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We can move it from softpin test into lib, and since softpin support is
highly unlikely to go away in-between getparam ioctl calls, let's just
do a single call and store the value.

v2: rebase

Signed-off-by: Michał Winiarski <michal.winiarski@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Michał Winiarski 2016-01-25 19:35:02 +01:00 committed by Daniel Vetter
parent 52b5d5016e
commit e6ca4bd7cd
3 changed files with 31 additions and 21 deletions
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29
lib/ioctl_wrappers.c
View File

@ -1242,6 +1242,35 @@ uint64_t gem_mappable_aperture_size(void)
return pci_dev->regions[bar].size;
}
#define LOCAL_I915_PARAM_HAS_EXEC_SOFTPIN 37
/**
* gem_has_softpin:
* @fd: open i915 drm file descriptor
*
* Feature test macro to query whether the softpinning functionality is
* supported.
*
* Returns: Whether softpin support is available
*/
bool gem_has_softpin(int fd)
{
static int has_softpin = -1;
if (has_softpin < 0) {
struct drm_i915_getparam gp;
memset(&gp, 0, sizeof(gp));
gp.param = LOCAL_I915_PARAM_HAS_EXEC_SOFTPIN;
gp.value = &has_softpin;
has_softpin = 0;
ioctl(fd, DRM_IOCTL_I915_GETPARAM, &gp, sizeof(gp));
errno = 0;
}
return has_softpin;
}
/**
* gem_require_caching:
* @fd: open i915 drm file descriptor

1
lib/ioctl_wrappers.h
View File

@ -132,6 +132,7 @@ int gem_available_fences(int fd);
uint64_t gem_available_aperture_size(int fd);
uint64_t gem_aperture_size(int fd);
uint64_t gem_mappable_aperture_size(void);
bool gem_has_softpin(int fd);
/* check functions which auto-skip tests by calling igt_skip() */
void gem_require_caching(int fd);

22
tests/gem_softpin.c
View File

@ -31,26 +31,6 @@
#define EXEC_OBJECT_PINNED (1<<4)
#define EXEC_OBJECT_SUPPORTS_48B_ADDRESS (1<<3)
/* has_softpin_support
* Finds if softpin feature is supported
* @fd DRM fd
*/
static bool has_softpin_support(int fd)
{
struct drm_i915_getparam gp;
int val = 0;
memset(&gp, 0, sizeof(gp));
gp.param = 37; /* I915_PARAM_HAS_EXEC_SOFTPIN */
gp.value = &val;
if (drmIoctl(fd, DRM_IOCTL_I915_GETPARAM, &gp))
return 0;
errno = 0;
return (val == 1);
}
/* gen8_canonical_addr
* Used to convert any address into canonical form, i.e. [63:48] == [47].
* Based on kernel's sign_extend64 implementation.
@ -494,7 +474,7 @@ igt_main
igt_fixture {
fd = drm_open_driver_master(DRIVER_INTEL);
igt_require(has_softpin_support(fd));
igt_require(gem_has_softpin(fd));
}
igt_subtest("invalid")