On VLV the GTFIFOCTL register has other bits besides the number of free
entries in the GT wake FIFO. Apply a mask when we read th register to
make sure we don't misinterpret the number of free FIFO entries.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
[danvet: There's some unclarity about hsw, but brushed off as todays'
Bspec just acting up a bit.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
#define GT_FIFO_IAWRERR (1<<1)
#define GT_FIFO_IARDERR (1<<0)
#define GT_FIFO_IAWRERR (1<<1)
#define GT_FIFO_IARDERR (1<<0)
-#define GT_FIFO_FREE_ENTRIES 0x120008
+#define GTFIFOCTL 0x120008
+#define GT_FIFO_FREE_ENTRIES_MASK 0x7f
#define GT_FIFO_NUM_RESERVED_ENTRIES 20
#define HSW_IDICR 0x9008
#define GT_FIFO_NUM_RESERVED_ENTRIES 20
#define HSW_IDICR 0x9008
if (dev_priv->uncore.fifo_count < GT_FIFO_NUM_RESERVED_ENTRIES) {
int loop = 500;
if (dev_priv->uncore.fifo_count < GT_FIFO_NUM_RESERVED_ENTRIES) {
int loop = 500;
- u32 fifo = __raw_i915_read32(dev_priv, GT_FIFO_FREE_ENTRIES);
+ u32 fifo = __raw_i915_read32(dev_priv, GTFIFOCTL) & GT_FIFO_FREE_ENTRIES_MASK;
while (fifo <= GT_FIFO_NUM_RESERVED_ENTRIES && loop--) {
udelay(10);
while (fifo <= GT_FIFO_NUM_RESERVED_ENTRIES && loop--) {
udelay(10);
- fifo = __raw_i915_read32(dev_priv, GT_FIFO_FREE_ENTRIES);
+ fifo = __raw_i915_read32(dev_priv, GTFIFOCTL) & GT_FIFO_FREE_ENTRIES_MASK;
}
if (WARN_ON(loop < 0 && fifo <= GT_FIFO_NUM_RESERVED_ENTRIES))
++ret;
}
if (WARN_ON(loop < 0 && fifo <= GT_FIFO_NUM_RESERVED_ENTRIES))
++ret;
dev_priv->uncore.funcs.force_wake_put(dev_priv, FORCEWAKE_ALL);
/* Restore fifo count */
dev_priv->uncore.funcs.force_wake_put(dev_priv, FORCEWAKE_ALL);
/* Restore fifo count */
- dev_priv->uncore.fifo_count = __raw_i915_read32(dev_priv, GT_FIFO_FREE_ENTRIES);
+ dev_priv->uncore.fifo_count = __raw_i915_read32(dev_priv, GTFIFOCTL) & GT_FIFO_FREE_ENTRIES_MASK;
spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags);
return ret;
spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags);
return ret;