diff options
| author |   kettenis <kettenis@openbsd.org> | 2015-10-18 18:00:45 +0000 |
|---|---|---|
| committer | kettenis <kettenis@openbsd.org> | 2015-10-18 18:00:45 +0000 |
| commit | 114eafaa6aa4e9cde5e92abfe4beb37584b7096d (patch) | |
| tree | cb0be203b25249461ffbfef1c43713d9b63f07d2 | |
| parent | Use "getpw" rather than "flock", per deraadt@'s suggestion. (diff) | |
| download | wireguard-openbsd-114eafaa6aa4e9cde5e92abfe4beb37584b7096d.tar.xz wireguard-openbsd-114eafaa6aa4e9cde5e92abfe4beb37584b7096d.zip | |
Backport another Broadwell fix from Linux 3.15
Ben Widawsky
drm/i915: Provide PDP updates via MMIO
e178f7057b81c87a7ceaae0ca204487b6f7eedcf
Doesn't make resume work, but at least it prevents the machine from hanging
and/or resetting.
| -rw-r--r-- | sys/dev/pci/drm/i915/i915_gem_gtt.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/sys/dev/pci/drm/i915/i915_gem_gtt.c b/sys/dev/pci/drm/i915/i915_gem_gtt.c index d2d5d2b767c..9372f974fbb 100644 --- a/sys/dev/pci/drm/i915/i915_gem_gtt.c +++ b/sys/dev/pci/drm/i915/i915_gem_gtt.c @@ -1,4 +1,4 @@ -/* $OpenBSD: i915_gem_gtt.c,v 1.13 2015/09/26 13:15:25 kettenis Exp $ */ +/* $OpenBSD: i915_gem_gtt.c,v 1.14 2015/10/18 18:00:45 kettenis Exp $ */ /* * Copyright © 2010 Daniel Vetter * @@ -209,12 +209,19 @@ static gen6_gtt_pte_t iris_pte_encode(dma_addr_t addr, /* Broadwell Page Directory Pointer Descriptors */ static int gen8_write_pdp(struct intel_ring_buffer *ring, unsigned entry, - uint64_t val) + uint64_t val, bool synchronous) { + struct drm_i915_private *dev_priv = ring->dev->dev_private; int ret; BUG_ON(entry >= 4); + if (synchronous) { + I915_WRITE(GEN8_RING_PDP_UDW(ring, entry), val >> 32); + I915_WRITE(GEN8_RING_PDP_LDW(ring, entry), (u32)val); + return 0; + } + ret = intel_ring_begin(ring, 6); if (ret) return ret; @@ -248,7 +255,8 @@ static int gen8_ppgtt_enable(struct drm_device *dev) for (i = used_pd - 1; i >= 0; i--) { dma_addr_t addr = ppgtt->pd_dma_addr[i]; for_each_ring(ring, dev_priv, j) { - ret = gen8_write_pdp(ring, i, addr); + ret = gen8_write_pdp(ring, i, addr, + i915_reset_in_progress(&dev_priv->gpu_error)); if (ret) goto err_out; } |