drm: Add GEM ("graphics execution manager") to i915 driver.
GEM allows the creation of persistent buffer objects accessible by the
graphics device through new ioctls for managing execution of commands on the
device. The userland API is almost entirely driver-specific to ensure that
any driver building on this model can easily map the interface to individual
driver requirements.
GEM is used by the 2d driver for managing its internal state allocations and
will be used for pixmap storage to reduce memory consumption and enable
zero-copy GLX_EXT_texture_from_pixmap, and in the 3d driver is used to enable
GL_EXT_framebuffer_object and GL_ARB_pixel_buffer_object.
Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 43ad2cb..5c2d9f2 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -25,19 +25,6 @@
#ifndef _I915_REG_H_
#define _I915_REG_H_
-/* MCH MMIO space */
-/** 915-945 and GM965 MCH register controlling DRAM channel access */
-#define DCC 0x200
-#define DCC_ADDRESSING_MODE_SINGLE_CHANNEL (0 << 0)
-#define DCC_ADDRESSING_MODE_DUAL_CHANNEL_ASYMMETRIC (1 << 0)
-#define DCC_ADDRESSING_MODE_DUAL_CHANNEL_INTERLEAVED (2 << 0)
-#define DCC_ADDRESSING_MODE_MASK (3 << 0)
-#define DCC_CHANNEL_XOR_DISABLE (1 << 10)
-
-/** 965 MCH register controlling DRAM channel configuration */
-#define CHDECMISC 0x111
-#define CHDECMISC_FLEXMEMORY (1 << 1)
-
/*
* The Bridge device's PCI config space has information about the
* fb aperture size and the amount of pre-reserved memory.
@@ -516,6 +503,30 @@
#define PALETTE_A 0x0a000
#define PALETTE_B 0x0a800
+/* MCH MMIO space */
+
+/*
+ * MCHBAR mirror.
+ *
+ * This mirrors the MCHBAR MMIO space whose location is determined by
+ * device 0 function 0's pci config register 0x44 or 0x48 and matches it in
+ * every way. It is not accessible from the CP register read instructions.
+ *
+ */
+#define MCHBAR_MIRROR_BASE 0x10000
+
+/** 915-945 and GM965 MCH register controlling DRAM channel access */
+#define DCC 0x10200
+#define DCC_ADDRESSING_MODE_SINGLE_CHANNEL (0 << 0)
+#define DCC_ADDRESSING_MODE_DUAL_CHANNEL_ASYMMETRIC (1 << 0)
+#define DCC_ADDRESSING_MODE_DUAL_CHANNEL_INTERLEAVED (2 << 0)
+#define DCC_ADDRESSING_MODE_MASK (3 << 0)
+#define DCC_CHANNEL_XOR_DISABLE (1 << 10)
+
+/** 965 MCH register controlling DRAM channel configuration */
+#define C0DRB3 0x10206
+#define C1DRB3 0x10606
+
/*
* Overlay regs
*/