From d556e068a7e4e9dfb57514244ae5f3e0eb9d0b39 Mon Sep 17 00:00:00 2001 From: Jeff McGee Date: Mon, 9 Mar 2015 16:13:03 -0700 Subject: intel: Export total subslice and EU counts Update kernel interface with new I915_GETPARAM ioctl entries for subslice total and EU total. Add a wrapping function for each parameter. Userspace drivers need these values when constructing GPGPU commands. This kernel query method is intended to replace the PCI ID-based tables that userspace drivers currently maintain. The kernel driver can employ fuse register reads as needed to ensure the most accurate determination of GT config attributes. This first became important with Cherryview in which the config could differ between devices with the same PCI ID. The kernel detection of these values is device-specific. Userspace drivers should continue to maintain ID-based tables for older devices which return ENODEV when using this query. v2: remove unnecessary include of and increment the I915_GETPARAM indices to match updated kernel patch. For: VIZ-4636 Reviewed-by: Damien Lespiau Signed-off-by: Jeff McGee Signed-off-by: Damien Lespiau --- intel/intel_bufmgr.h | 3 +++ intel/intel_bufmgr_gem.c | 31 +++++++++++++++++++++++++++++++ 2 files changed, 34 insertions(+) (limited to 'intel') diff --git a/intel/intel_bufmgr.h b/intel/intel_bufmgr.h index be83a56a..285919e4 100644 --- a/intel/intel_bufmgr.h +++ b/intel/intel_bufmgr.h @@ -264,6 +264,9 @@ int drm_intel_get_reset_stats(drm_intel_context *ctx, uint32_t *active, uint32_t *pending); +int drm_intel_get_subslice_total(int fd, unsigned int *subslice_total); +int drm_intel_get_eu_total(int fd, unsigned int *eu_total); + /** @{ Compatibility defines to keep old code building despite the symbol rename * from dri_* to drm_intel_* */ diff --git a/intel/intel_bufmgr_gem.c b/intel/intel_bufmgr_gem.c index acbfd4ad..5a67f53a 100644 --- a/intel/intel_bufmgr_gem.c +++ b/intel/intel_bufmgr_gem.c @@ -3295,6 +3295,37 @@ drm_intel_reg_read(drm_intel_bufmgr *bufmgr, return ret; } +drm_public int +drm_intel_get_subslice_total(int fd, unsigned int *subslice_total) +{ + drm_i915_getparam_t gp; + int ret; + + memclear(gp); + gp.value = (int*)subslice_total; + gp.param = I915_PARAM_SUBSLICE_TOTAL; + ret = drmIoctl(fd, DRM_IOCTL_I915_GETPARAM, &gp); + if (ret) + return -errno; + + return 0; +} + +drm_public int +drm_intel_get_eu_total(int fd, unsigned int *eu_total) +{ + drm_i915_getparam_t gp; + int ret; + + memclear(gp); + gp.value = (int*)eu_total; + gp.param = I915_PARAM_EU_TOTAL; + ret = drmIoctl(fd, DRM_IOCTL_I915_GETPARAM, &gp); + if (ret) + return -errno; + + return 0; +} /** * Annotate the given bo for use in aub dumping. -- cgit v1.2.3