The early gen3 machines inherited the MI block and restrictions from gen2, and may only use physical addresses in conjunction with MI_STORE_DATA_IMM -- that makes it unusable for us from userspace, where we can only use virtual offsets. Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> --- lib/igt_gt.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/lib/igt_gt.c b/lib/igt_gt.c index d5e8b557..b3f3b380 100644 --- a/lib/igt_gt.c +++ b/lib/igt_gt.c @@ -557,6 +557,9 @@ bool gem_can_store_dword(int fd, unsigned int engine) if (gen <= 2) /* requires physical addresses */ return false; + if (gen == 3 && (info->is_grantsdale || info->is_alviso)) + return false; /* only supports physical addresses */ + if (gen == 6 && (engine & ~(3<<13)) == I915_EXEC_BSD) return false; /* kills the machine! */ -- 2.14.1 _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
