Separate i810 and i830 ring macros out into separate files.

I want to hack on i830 for changing it into a compat path for batchbuffer
without having to worry about the i810 stuff getting broken.

1 files changed, 121 insertions, 0 deletions

diff --git a/src/i830_ring.h b/src/i830_ring.h
new file mode 100644
index 00000000..dd55e6f1
--- /dev/null
+++ b/src/i830_ring.h
@@ -0,0 +1,121 @@
+/**************************************************************************
+
+Copyright 1998-1999 Precision Insight, Inc., Cedar Park, Texas.
+Copyright © 2002 David Dawes
+
+All Rights Reserved.
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sub license, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice (including the
+next paragraph) shall be included in all copies or substantial portions
+of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+IN NO EVENT SHALL PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR
+ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+**************************************************************************/
+
+#ifndef _INTEL_RING_H
+#define _INTEL_RING_H
+
+#define OUT_RING(n) do {						\
+   if (I810_DEBUG & DEBUG_VERBOSE_RING)					\
+      ErrorF( "OUT_RING %lx: %x, (mask %x)\n",				\
+		(unsigned long)(outring), (unsigned int)(n), ringmask);	\
+   *(volatile unsigned int *)(virt + outring) = n;			\
+   outring += 4; ringused += 4;						\
+   outring &= ringmask;							\
+} while (0)
+
+/** Copies a given number of bytes to the ring */
+#define OUT_RING_COPY(n, ptr) do {					\
+    if (I810_DEBUG & DEBUG_VERBOSE_RING)				\
+	ErrorF("OUT_RING_DATA %d bytes\n", n);				\
+    memcpy_volatile(virt + outring, ptr, n);				\
+    outring += n;							\
+    ringused += n;							\
+    outring &= ringmask;						\
+} while (0)
+
+/** Pads the ring with a given number of zero bytes */
+#define OUT_RING_PAD(n) do {						\
+    if (I810_DEBUG & DEBUG_VERBOSE_RING)				\
+	ErrorF("OUT_RING_PAD %d bytes\n", n);				\
+    memset_volatile(virt + outring, 0, n);				\
+    outring += n;							\
+    ringused += n;							\
+    outring &= ringmask;						\
+} while (0)
+
+union intfloat {
+	float f;
+	unsigned int ui;
+};
+
+#define OUT_RING_F(x) do {			\
+	union intfloat tmp;			\
+	tmp.f = (float)(x);			\
+	OUT_RING(tmp.ui);			\
+} while(0)				
+
+#define ADVANCE_LP_RING() do {						\
+   if (ringused > needed)          \
+      FatalError("%s: ADVANCE_LP_RING: exceeded allocation %d/%d\n ",	\
+	     __FUNCTION__, ringused, needed);   			\
+   else if (ringused < needed)						\
+      FatalError("%s: ADVANCE_LP_RING: under-used allocation %d/%d\n ",	\
+	     __FUNCTION__, ringused, needed);   			\
+   pI830->LpRing->tail = outring;					\
+   pI830->LpRing->space -= ringused;					\
+   if (outring & 0x07)							\
+      FatalError("%s: ADVANCE_LP_RING: "				\
+	     "outring (0x%x) isn't on a QWord boundary\n",		\
+	     __FUNCTION__, outring);					\
+   OUTREG(LP_RING + RING_TAIL, outring);				\
+} while (0)
+
+/*
+ * XXX Note: the head/tail masks are different for 810 and i830.
+ * If the i810 always sets the higher bits to 0, then this shouldn't be
+ * a problem.  Check this!
+ */
+#define DO_RING_IDLE() do {						\
+   int _head;								\
+   int _tail;								\
+   do {									\
+      _head = INREG(LP_RING + RING_HEAD) & I830_HEAD_MASK;		\
+      _tail = INREG(LP_RING + RING_TAIL) & I830_TAIL_MASK;		\
+      DELAY(10);							\
+   } while (_head != _tail);						\
+} while( 0)
+
+#define BEGIN_LP_RING(n)						\
+   unsigned int outring, ringmask, ringused = 0;			\
+   volatile unsigned char *virt;					\
+   int needed;								\
+   if ((n) & 1)								\
+      ErrorF("BEGIN_LP_RING called with odd argument: %d\n", n);	\
+   if ((n) > 2 && (I810_DEBUG&DEBUG_ALWAYS_SYNC))			\
+      DO_RING_IDLE();							\
+   needed = (n) * 4;							\
+   if (pI830->LpRing->space < needed)					\
+      WaitRingFunc(pScrn, needed, 0);					\
+   outring = pI830->LpRing->tail;					\
+   ringmask = pI830->LpRing->tail_mask;					\
+   virt = pI830->LpRing->virtual_start;					\
+   if (I810_DEBUG & DEBUG_VERBOSE_RING)					\
+      ErrorF( "BEGIN_LP_RING %d in %s\n", n, FUNCTION_NAME);
+
+#endif /* _INTEL_RING_H */