[PATCH 55/89] drm/i915/skl: Gen9 multi-engine forcewake

Damien Lespiau
2014-09-04T11:28:50Z

From: Zhe Wang <zhe1.wang@intel.com>

Enable multi-engine forcewake for Gen9.

v2: Rebase on top of nightly
Move the register range definitions to intel_uncore.c
Whitespace fixes
(Damien)

Signed-off-by: Zhe Wang <zhe1.wang@intel.com>
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
---
drivers/gpu/drm/i915/intel_uncore.c | 120 ++++++++++++++++++++++++++++++++++++
1 file changed, 120 insertions(+)

diff --git a/drivers/gpu/drm/i915/intel_uncore.c b/drivers/gpu/drm/i915/intel_uncore.c
index 7b7fc9e..f289f4f 100644
--- a/drivers/gpu/drm/i915/intel_uncore.c
+++ b/drivers/gpu/drm/i915/intel_uncore.c
@@ -674,6 +674,34 @@ void assert_force_wake_inactive(struct drm_i915_private *dev_priv)
REG_RANGE((reg), 0x14000, 0x14400) || \
REG_RANGE((reg), 0x22000, 0x24000))

+#define FORCEWAKE_GEN9_UNCORE_RANGE_OFFSET(reg) \
+ ((reg) >= 0xC00 && (reg) < 0x2000)
+
+#define FORCEWAKE_GEN9_RENDER_RANGE_OFFSET(reg) \
+ (((reg) >= 0x2000 && (reg) < 0x4000) || \
+ ((reg) >= 0x5200 && (reg) < 0x8000) || \
+ ((reg) >= 0x8300 && (reg) < 0x8500) || \
+ ((reg) >= 0x8C00 && (reg) < 0x8D00) || \
+ ((reg) >= 0xB000 && (reg) < 0xB480) || \
+ ((reg) >= 0xE000 && (reg) < 0xE800))
+
+#define FORCEWAKE_GEN9_MEDIA_RANGE_OFFSET(reg) \
+ (((reg) >= 0x8800 && (reg) < 0x8A00) || \
+ ((reg) >= 0xD000 && (reg) < 0xD800) || \
+ ((reg) >= 0x12000 && (reg) < 0x14000) || \
+ ((reg) >= 0x1A000 && (reg) < 0x1EA00) || \
+ ((reg) >= 0x30000 && (reg) < 0x40000))
+
+#define FORCEWAKE_GEN9_COMMON_RANGE_OFFSET(reg) \
+ ((reg) >= 0x9400 && (reg) < 0x9800)
+
+#define FORCEWAKE_GEN9_BLITTER_RANGE_OFFSET(reg) \
+ ((reg) < 0x40000 &&\
+ !FORCEWAKE_GEN9_UNCORE_RANGE_OFFSET(reg) && \
+ !FORCEWAKE_GEN9_RENDER_RANGE_OFFSET(reg) && \
+ !FORCEWAKE_GEN9_MEDIA_RANGE_OFFSET(reg) && \
+ !FORCEWAKE_GEN9_COMMON_RANGE_OFFSET(reg))
+
static void
ilk_dummy_write(struct drm_i915_private *dev_priv)
{
@@ -804,6 +832,43 @@ chv_read##x(struct drm_i915_private *dev_priv, off_t reg, bool trace) { \
REG_READ_FOOTER; \
}

+#define __gen9_read(x) \
+static u##x \
+gen9_read##x(struct drm_i915_private *dev_priv, off_t reg, bool trace) { \
+ REG_READ_HEADER(x); \
+ if (!NEEDS_FORCE_WAKE((dev_priv), (reg)) || \
+ FORCEWAKE_GEN9_UNCORE_RANGE_OFFSET(reg)) { \
+ val = __raw_i915_read##x(dev_priv, reg); \
+ } else { \
+ unsigned fwengine = 0; \
+ if (FORCEWAKE_GEN9_RENDER_RANGE_OFFSET(reg)) { \
+ if (dev_priv->uncore.fw_rendercount == 0) \
+ fwengine = FORCEWAKE_RENDER; \
+ } else if (FORCEWAKE_GEN9_MEDIA_RANGE_OFFSET(reg)) { \
+ if (dev_priv->uncore.fw_mediacount == 0) \
+ fwengine = FORCEWAKE_MEDIA; \
+ } else if (FORCEWAKE_GEN9_COMMON_RANGE_OFFSET(reg)) { \
+ if (dev_priv->uncore.fw_rendercount == 0) \
+ fwengine |= FORCEWAKE_RENDER; \
+ if (dev_priv->uncore.fw_mediacount == 0) \
+ fwengine |= FORCEWAKE_MEDIA; \
+ } else { \
+ if (dev_priv->uncore.fw_blittercount == 0) \
+ fwengine = FORCEWAKE_BLITTER; \
+ } \
+ if (fwengine) \
+ dev_priv->uncore.funcs.force_wake_get(dev_priv, fwengine); \
+ val = __raw_i915_read##x(dev_priv, reg); \
+ if (fwengine) \
+ dev_priv->uncore.funcs.force_wake_put(dev_priv, fwengine); \
+ } \
+ REG_READ_FOOTER; \
+}
+
+__gen9_read(8)
+__gen9_read(16)
+__gen9_read(32)
+__gen9_read(64)
__chv_read(8)
__chv_read(16)
__chv_read(32)
@@ -825,6 +890,7 @@ __gen4_read(16)
__gen4_read(32)
__gen4_read(64)

+#undef __gen9_read
#undef __chv_read
#undef __vlv_read
#undef __gen6_read
@@ -962,6 +1028,46 @@ chv_write##x(struct drm_i915_private *dev_priv, off_t reg, u##x val, bool trace)
REG_WRITE_FOOTER; \
}

+#define __gen9_write(x) \
+static void \
+gen9_write##x(struct drm_i915_private *dev_priv, off_t reg, u##x val, \
+ bool trace) { \
+ REG_WRITE_HEADER; \
+ if (!NEEDS_FORCE_WAKE((dev_priv), (reg)) || \
+ FORCEWAKE_GEN9_UNCORE_RANGE_OFFSET(reg)) { \
+ __raw_i915_write##x(dev_priv, reg, val); \
+ } else { \
+ unsigned fwengine = 0; \
+ if (FORCEWAKE_GEN9_RENDER_RANGE_OFFSET(reg)) { \
+ if (dev_priv->uncore.fw_rendercount == 0) \
+ fwengine = FORCEWAKE_RENDER; \
+ } else if (FORCEWAKE_GEN9_MEDIA_RANGE_OFFSET(reg)) { \
+ if (dev_priv->uncore.fw_mediacount == 0) \
+ fwengine = FORCEWAKE_MEDIA; \
+ } else if (FORCEWAKE_GEN9_COMMON_RANGE_OFFSET(reg)) { \
+ if (dev_priv->uncore.fw_rendercount == 0) \
+ fwengine |= FORCEWAKE_RENDER; \
+ if (dev_priv->uncore.fw_mediacount == 0) \
+ fwengine |= FORCEWAKE_MEDIA; \
+ } else { \
+ if (dev_priv->uncore.fw_blittercount == 0) \
+ fwengine = FORCEWAKE_BLITTER; \
+ } \
+ if (fwengine) \
+ dev_priv->uncore.funcs.force_wake_get(dev_priv, \
+ fwengine); \
+ __raw_i915_write##x(dev_priv, reg, val); \
+ if (fwengine) \
+ dev_priv->uncore.funcs.force_wake_put(dev_priv, \
+ fwengine); \
+ } \
+ REG_WRITE_FOOTER; \
+}
+
+__gen9_write(8)
+__gen9_write(16)
+__gen9_write(32)
+__gen9_write(64)
__chv_write(8)
__chv_write(16)
__chv_write(32)
@@ -987,6 +1093,7 @@ __gen4_write(16)
__gen4_write(32)
__gen4_write(64)

+#undef __gen9_write
#undef __chv_write
#undef __gen8_write
#undef __hsw_write
@@ -1054,6 +1161,19 @@ void intel_uncore_init(struct drm_device *dev)

switch (INTEL_INFO(dev)->gen) {
default:
+ WARN_ON(1);
+ return;
+ case 9:
+ dev_priv->uncore.funcs.mmio_writeb = gen9_write8;
+ dev_priv->uncore.funcs.mmio_writew = gen9_write16;
+ dev_priv->uncore.funcs.mmio_writel = gen9_write32;
+ dev_priv->uncore.funcs.mmio_writeq = gen9_write64;
+ dev_priv->uncore.funcs.mmio_readb = gen9_read8;
+ dev_priv->uncore.funcs.mmio_readw = gen9_read16;
+ dev_priv->uncore.funcs.mmio_readl = gen9_read32;
+ dev_priv->uncore.funcs.mmio_readq = gen9_read64;
+ break;
+ case 8:
if (IS_CHERRYVIEW(dev)) {
dev_priv->uncore.funcs.mmio_writeb = chv_write8;
dev_priv->uncore.funcs.mmio_writew = chv_write16;
--
1.8.3.1