diff options
| author | Eugeni Dodonov <eugeni.dodonov@intel.com> | 2012-01-17 15:20:19 -0200 |
|---|---|---|
| committer | Eugeni Dodonov <eugeni@dodonov.net> | 2012-02-01 15:54:02 -0200 |
| commit | 151cdcfe685ee280a4344dfc40e6087d74a5590f (patch) | |
| tree | fe6adf0d3d87a31f2c61a2e5cb91f9b6f44bfc0a /intel | |
| parent | 82c6938d232327233caac743a07639ac91bceb7e (diff) | |
intel: query for LLC support
This adds support for querying the kernel about the LLC support in the
hardware.
In case the ioctl fails, we assume that it is present on GEN6 and GEN7.
v2: fix the return code checking
Signed-off-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Diffstat (limited to 'intel')
| -rw-r--r-- | intel/intel_bufmgr_gem.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/intel/intel_bufmgr_gem.c b/intel/intel_bufmgr_gem.c index 26e3a5ce..187e8ec9 100644 --- a/intel/intel_bufmgr_gem.c +++ b/intel/intel_bufmgr_gem.c @@ -107,6 +107,7 @@ typedef struct _drm_intel_bufmgr_gem { unsigned int has_bsd : 1; unsigned int has_blt : 1; unsigned int has_relaxed_fencing : 1; + unsigned int has_llc : 1; unsigned int bo_reuse : 1; bool fenced_relocs; } drm_intel_bufmgr_gem; @@ -2358,6 +2359,17 @@ drm_intel_bufmgr_gem_init(int fd, int batch_size) ret = drmIoctl(bufmgr_gem->fd, DRM_IOCTL_I915_GETPARAM, &gp); bufmgr_gem->has_relaxed_fencing = ret == 0; + gp.param = I915_PARAM_HAS_LLC; + ret = drmIoctl(bufmgr_gem->fd, DRM_IOCTL_I915_GETPARAM, &gp); + if (ret == -EINVAL) { + /* Kernel does not supports HAS_LLC query, fallback to GPU + * generation detection and assume that we have LLC on GEN6/7 + */ + bufmgr_gem->has_llc = (IS_GEN6(bufmgr_gem->pci_device) | + IS_GEN7(bufmgr_gem->pci_device)); + } else + bufmgr_gem->has_llc = ret == 0; + if (bufmgr_gem->gen < 4) { gp.param = I915_PARAM_NUM_FENCES_AVAIL; gp.value = &bufmgr_gem->available_fences; |