drm/i915: access VLV regs through read/write switch

Since the offsets have all moved around.

v2: switch IS_DISPLAYREG and IS_VALLEYVIEW checks around since the latter is
    cheaper (Daniel)
    bail out early in IS_DISPLAYREG if the reg is in the new range (Daniel)

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
[danvet: Fixup if cascading fail that broke HAS_FORCEWAKE machines.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index d7dd60b..d1306c0 100644 (file)
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -1146,6 +1146,84 @@ MODULE_LICENSE("GPL and additional rights");
         ((reg) != FORCEWAKE)) && \
        (!IS_VALLEYVIEW((dev_priv)->dev))
 
+static bool IS_DISPLAYREG(u32 reg)
+{
+       /*
+        * This should make it easier to transition modules over to the
+        * new register block scheme, since we can do it incrementally.
+        */
+       if (reg >= 0x180000)
+               return false;
+
+       if (reg >= RENDER_RING_BASE &&
+           reg < RENDER_RING_BASE + 0xff)
+               return false;
+       if (reg >= GEN6_BSD_RING_BASE &&
+           reg < GEN6_BSD_RING_BASE + 0xff)
+               return false;
+       if (reg >= BLT_RING_BASE &&
+           reg < BLT_RING_BASE + 0xff)
+               return false;
+
+       if (reg == PGTBL_ER)
+               return false;
+
+       if (reg >= IPEIR_I965 &&
+           reg < HWSTAM)
+               return false;
+
+       if (reg == MI_MODE)
+               return false;
+
+       if (reg == GFX_MODE_GEN7)
+               return false;
+
+       if (reg == RENDER_HWS_PGA_GEN7 ||
+           reg == BSD_HWS_PGA_GEN7 ||
+           reg == BLT_HWS_PGA_GEN7)
+               return false;
+
+       if (reg == GEN6_BSD_SLEEP_PSMI_CONTROL ||
+           reg == GEN6_BSD_RNCID)
+               return false;
+
+       if (reg == GEN6_BLITTER_ECOSKPD)
+               return false;
+
+       if (reg >= 0x4000c &&
+           reg <= 0x4002c)
+               return false;
+
+       if (reg >= 0x4f000 &&
+           reg <= 0x4f08f)
+               return false;
+
+       if (reg >= 0x4f100 &&
+           reg <= 0x4f11f)
+               return false;
+
+       if (reg >= VLV_MASTER_IER &&
+           reg <= GEN6_PMIER)
+               return false;
+
+       if (reg >= FENCE_REG_SANDYBRIDGE_0 &&
+           reg < (FENCE_REG_SANDYBRIDGE_0 + (16*8)))
+               return false;
+
+       if (reg >= VLV_IIR_RW &&
+           reg <= VLV_ISR)
+               return false;
+
+       if (reg == FORCEWAKE_VLV ||
+           reg == FORCEWAKE_ACK_VLV)
+               return false;
+
+       if (reg == GEN6_GDRST)
+               return false;
+
+       return true;
+}
+
 #define __i915_read(x, y) \
 u##x i915_read##x(struct drm_i915_private *dev_priv, u32 reg) { \
        u##x val = 0; \
@@ -1158,6 +1236,8 @@ u##x i915_read##x(struct drm_i915_private *dev_priv, u32 reg) { \
                if (dev_priv->forcewake_count == 0) \
                        dev_priv->display.force_wake_put(dev_priv); \
                spin_unlock_irqrestore(&dev_priv->gt_lock, irqflags); \
+       } else if (IS_VALLEYVIEW(dev_priv->dev) && IS_DISPLAYREG(reg)) { \
+               val = read##y(dev_priv->regs + reg + 0x180000);         \
        } else { \
                val = read##y(dev_priv->regs + reg); \
        } \
@@ -1178,7 +1258,11 @@ void i915_write##x(struct drm_i915_private *dev_priv, u32 reg, u##x val) { \
        if (NEEDS_FORCE_WAKE((dev_priv), (reg))) { \
                __fifo_ret = __gen6_gt_wait_for_fifo(dev_priv); \
        } \
-       write##y(val, dev_priv->regs + reg); \
+       if (IS_VALLEYVIEW(dev_priv->dev) && IS_DISPLAYREG(reg)) { \
+               write##y(val, dev_priv->regs + reg + 0x180000);         \
+       } else {                                                        \
+               write##y(val, dev_priv->regs + reg);                    \
+       }                                                               \
        if (unlikely(__fifo_ret)) { \
                gen6_gt_check_fifodbg(dev_priv); \
        } \