From 6b8294a4d392c2c9f8867e8505511f3fc9419ba7 Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Fri, 16 Nov 2012 11:43:20 +0000 Subject: drm/i915: Restore physical HWS_PGA after resume By always setting up the HWS register for both physical and virtual address variations during render ring we can reduce the number of different special cases that get set up at varying different times during module load. Fixes regression from commit c630119f43471a8ece356b01dabf07f944f453b3 Author: Daniel Vetter Date: Wed Oct 17 11:32:57 2012 +0200 drm/i915: don't save/restore HWS_PGA reg for kms Signed-off-by: Chris Wilson Cc: Daniel Vetter Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/intel_ringbuffer.c | 45 +++++++++++++++++++++++++-------- 1 file changed, 35 insertions(+), 10 deletions(-) (limited to 'drivers/gpu/drm/i915/intel_ringbuffer.c') diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c index a035ac223fb..1aa76892a83 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.c +++ b/drivers/gpu/drm/i915/intel_ringbuffer.c @@ -1079,6 +1079,29 @@ err: return ret; } +static int init_phys_hws_pga(struct intel_ring_buffer *ring) +{ + struct drm_i915_private *dev_priv = ring->dev->dev_private; + u32 addr; + + if (!dev_priv->status_page_dmah) { + dev_priv->status_page_dmah = + drm_pci_alloc(ring->dev, PAGE_SIZE, PAGE_SIZE); + if (!dev_priv->status_page_dmah) + return -ENOMEM; + } + + addr = dev_priv->status_page_dmah->busaddr; + if (INTEL_INFO(ring->dev)->gen >= 4) + addr |= (dev_priv->status_page_dmah->busaddr >> 28) & 0xf0; + I915_WRITE(HWS_PGA, addr); + + ring->status_page.page_addr = dev_priv->status_page_dmah->vaddr; + memset(ring->status_page.page_addr, 0, PAGE_SIZE); + + return 0; +} + static int intel_init_ring_buffer(struct drm_device *dev, struct intel_ring_buffer *ring) { @@ -1097,6 +1120,11 @@ static int intel_init_ring_buffer(struct drm_device *dev, ret = init_status_page(ring); if (ret) return ret; + } else { + BUG_ON(ring->id != RCS); + ret = init_phys_hws_pga(ring); + if (ret) + return ret; } obj = i915_gem_alloc_object(dev, ring->size); @@ -1545,12 +1573,6 @@ int intel_init_render_ring_buffer(struct drm_device *dev) ring->init = init_render_ring; ring->cleanup = render_ring_cleanup; - - if (!I915_NEED_GFX_HWS(dev)) { - ring->status_page.page_addr = dev_priv->status_page_dmah->vaddr; - memset(ring->status_page.page_addr, 0, PAGE_SIZE); - } - return intel_init_ring_buffer(dev, ring); } @@ -1558,6 +1580,7 @@ int intel_render_ring_init_dri(struct drm_device *dev, u64 start, u32 size) { drm_i915_private_t *dev_priv = dev->dev_private; struct intel_ring_buffer *ring = &dev_priv->ring[RCS]; + int ret; ring->name = "render ring"; ring->id = RCS; @@ -1595,9 +1618,6 @@ int intel_render_ring_init_dri(struct drm_device *dev, u64 start, u32 size) ring->init = init_render_ring; ring->cleanup = render_ring_cleanup; - if (!I915_NEED_GFX_HWS(dev)) - ring->status_page.page_addr = dev_priv->status_page_dmah->vaddr; - ring->dev = dev; INIT_LIST_HEAD(&ring->active_list); INIT_LIST_HEAD(&ring->request_list); @@ -1614,6 +1634,12 @@ int intel_render_ring_init_dri(struct drm_device *dev, u64 start, u32 size) return -ENOMEM; } + if (!I915_NEED_GFX_HWS(dev)) { + ret = init_phys_hws_pga(ring); + if (ret) + return ret; + } + return 0; } @@ -1662,7 +1688,6 @@ int intel_init_bsd_ring_buffer(struct drm_device *dev) } ring->init = init_ring_common; - return intel_init_ring_buffer(dev, ring); } -- cgit v1.2.3