From: Zhenyu Wang Date: Thu, 27 May 2010 02:26:42 +0000 (+0800) Subject: drm/i915: Fix PIPE_CONTROL command on Sandybridge X-Git-Tag: v4.13~18519^2~3 X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=ca76482e0f4b64942c704fa11c620ffd1bdd8475;p=mirror_ubuntu-bionic-kernel.git drm/i915: Fix PIPE_CONTROL command on Sandybridge Sandybridge(Gen6) has new format for PIPE_CONTROL command, the flush and post-op control are in dword 1 now. This changes command length field for difference between Ironlake and Sandybridge. I tried to test this with noop request and issue PIPE_CONTROL command for each sequence and track notify interrupts, which seems work fine. Hopefully we don't need workaround like on Ironlake for Sandybridge. Signed-off-by: Zhenyu Wang Signed-off-by: Eric Anholt --- diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c index f6b84fe8099a..cea4f1a8709e 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.c +++ b/drivers/gpu/drm/i915/intel_ringbuffer.c @@ -213,7 +213,7 @@ static int init_render_ring(struct drm_device *dev, #define PIPE_CONTROL_FLUSH(addr) \ do { \ OUT_RING(GFX_OP_PIPE_CONTROL | PIPE_CONTROL_QW_WRITE | \ - PIPE_CONTROL_DEPTH_STALL); \ + PIPE_CONTROL_DEPTH_STALL | 2); \ OUT_RING(addr | PIPE_CONTROL_GLOBAL_GTT); \ OUT_RING(0); \ OUT_RING(0); \ @@ -236,7 +236,19 @@ render_ring_add_request(struct drm_device *dev, u32 seqno; drm_i915_private_t *dev_priv = dev->dev_private; seqno = intel_ring_get_seqno(dev, ring); - if (HAS_PIPE_CONTROL(dev)) { + + if (IS_GEN6(dev)) { + BEGIN_LP_RING(6); + OUT_RING(GFX_OP_PIPE_CONTROL | 3); + OUT_RING(PIPE_CONTROL_QW_WRITE | + PIPE_CONTROL_WC_FLUSH | PIPE_CONTROL_IS_FLUSH | + PIPE_CONTROL_NOTIFY); + OUT_RING(dev_priv->seqno_gfx_addr | PIPE_CONTROL_GLOBAL_GTT); + OUT_RING(seqno); + OUT_RING(0); + OUT_RING(0); + ADVANCE_LP_RING(); + } else if (HAS_PIPE_CONTROL(dev)) { u32 scratch_addr = dev_priv->seqno_gfx_addr + 128; /*