diff options
Diffstat (limited to 'drivers/gpu/drm/i915/i915_drv.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_drv.c | 41 |
1 files changed, 35 insertions, 6 deletions
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c index 3d92d822c39..0694e170a33 100644 --- a/drivers/gpu/drm/i915/i915_drv.c +++ b/drivers/gpu/drm/i915/i915_drv.c @@ -103,6 +103,11 @@ MODULE_PARM_DESC(enable_hangcheck, "WARNING: Disabling this can cause system wide hangs. " "(default: true)"); +bool i915_enable_ppgtt __read_mostly = 1; +module_param_named(i915_enable_ppgtt, i915_enable_ppgtt, bool, 0600); +MODULE_PARM_DESC(i915_enable_ppgtt, + "Enable PPGTT (default: true)"); + static struct drm_driver driver; extern int intel_agp_enabled; @@ -380,16 +385,27 @@ void gen6_gt_force_wake_get(struct drm_i915_private *dev_priv) spin_unlock_irqrestore(&dev_priv->gt_lock, irqflags); } +static void gen6_gt_check_fifodbg(struct drm_i915_private *dev_priv) +{ + u32 gtfifodbg; + gtfifodbg = I915_READ_NOTRACE(GTFIFODBG); + if (WARN(gtfifodbg & GT_FIFO_CPU_ERROR_MASK, + "MMIO read or write has been dropped %x\n", gtfifodbg)) + I915_WRITE_NOTRACE(GTFIFODBG, GT_FIFO_CPU_ERROR_MASK); +} + void __gen6_gt_force_wake_put(struct drm_i915_private *dev_priv) { I915_WRITE_NOTRACE(FORCEWAKE, 0); - POSTING_READ(FORCEWAKE); + /* The below doubles as a POSTING_READ */ + gen6_gt_check_fifodbg(dev_priv); } void __gen6_gt_force_wake_mt_put(struct drm_i915_private *dev_priv) { I915_WRITE_NOTRACE(FORCEWAKE_MT, (1<<16) | 0); - POSTING_READ(FORCEWAKE_MT); + /* The below doubles as a POSTING_READ */ + gen6_gt_check_fifodbg(dev_priv); } /* @@ -405,8 +421,10 @@ void gen6_gt_force_wake_put(struct drm_i915_private *dev_priv) spin_unlock_irqrestore(&dev_priv->gt_lock, irqflags); } -void __gen6_gt_wait_for_fifo(struct drm_i915_private *dev_priv) +int __gen6_gt_wait_for_fifo(struct drm_i915_private *dev_priv) { + int ret = 0; + if (dev_priv->gt_fifo_count < GT_FIFO_NUM_RESERVED_ENTRIES) { int loop = 500; u32 fifo = I915_READ_NOTRACE(GT_FIFO_FREE_ENTRIES); @@ -414,10 +432,13 @@ void __gen6_gt_wait_for_fifo(struct drm_i915_private *dev_priv) udelay(10); fifo = I915_READ_NOTRACE(GT_FIFO_FREE_ENTRIES); } - WARN_ON(loop < 0 && fifo <= GT_FIFO_NUM_RESERVED_ENTRIES); + if (WARN_ON(loop < 0 && fifo <= GT_FIFO_NUM_RESERVED_ENTRIES)) + ++ret; dev_priv->gt_fifo_count = fifo; } dev_priv->gt_fifo_count--; + + return ret; } static int i915_drm_freeze(struct drm_device *dev) @@ -498,7 +519,7 @@ static int i915_drm_thaw(struct drm_device *dev) mutex_lock(&dev->struct_mutex); dev_priv->mm.suspended = 0; - error = i915_gem_init_ringbuffer(dev); + error = i915_gem_init_hw(dev); mutex_unlock(&dev->struct_mutex); if (HAS_PCH_SPLIT(dev)) @@ -713,12 +734,16 @@ int i915_reset(struct drm_device *dev, u8 flags) !dev_priv->mm.suspended) { dev_priv->mm.suspended = 0; + i915_gem_init_swizzling(dev); + dev_priv->ring[RCS].init(&dev_priv->ring[RCS]); if (HAS_BSD(dev)) dev_priv->ring[VCS].init(&dev_priv->ring[VCS]); if (HAS_BLT(dev)) dev_priv->ring[BCS].init(&dev_priv->ring[BCS]); + i915_gem_init_ppgtt(dev); + mutex_unlock(&dev->struct_mutex); drm_irq_uninstall(dev); drm_mode_config_reset(dev); @@ -981,11 +1006,15 @@ __i915_read(64, q) #define __i915_write(x, y) \ void i915_write##x(struct drm_i915_private *dev_priv, u32 reg, u##x val) { \ + u32 __fifo_ret = 0; \ trace_i915_reg_rw(true, reg, val, sizeof(val)); \ if (NEEDS_FORCE_WAKE((dev_priv), (reg))) { \ - __gen6_gt_wait_for_fifo(dev_priv); \ + __fifo_ret = __gen6_gt_wait_for_fifo(dev_priv); \ } \ write##y(val, dev_priv->regs + reg); \ + if (unlikely(__fifo_ret)) { \ + gen6_gt_check_fifodbg(dev_priv); \ + } \ } __i915_write(8, b) __i915_write(16, w) |