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+
+/**************************************************************************
+
+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.
+
+**************************************************************************/
+/* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/i810/common.h,v 1.6 2003/02/06 04:18:04 dawes Exp $ */
+
+/*
+ * Authors:
+ * Keith Whitwell <keith@tungstengraphics.com>
+ * David Dawes <dawes@tungstengraphics.com>
+ *
+ */
+
+#ifndef _INTEL_COMMON_H_
+#define _INTEL_COMMON_H_
+
+#ifdef __GNUC__
+#define PFX __FILE__,__LINE__,__FUNCTION__
+#define FUNCTION_NAME __FUNCTION__
+#else
+#define PFX __FILE__,__LINE__,""
+#define FUNCTION_NAME ""
+#endif
+
+#ifdef I830DEBUG
+#define MARKER() ErrorF("\n### %s:%d: >>> %s <<< ###\n\n", \
+ __FILE__, __LINE__,__FUNCTION__)
+#define DPRINTF I830DPRINTF_stub
+#else /* #ifdef I830DEBUG */
+#define MARKER()
+/* this is a real ugly hack to get the compiler to optimize the debugging statements into oblivion */
+#define DPRINTF if(0) I830DPRINTF_stub
+#endif /* #ifdef I830DEBUG */
+
+#define KB(x) ((x) * 1024)
+#define MB(x) ((x) * KB(1024))
+
+/* Using usleep() makes things noticably slow. */
+#if 0
+#define DELAY(x) usleep(x)
+#else
+#define DELAY(x) do {;} while (0)
+#endif
+
+/* I830 hooks for the I810 driver setup/probe. */
+extern const OptionInfoRec *I830BIOSAvailableOptions(int chipid, int busid);
+extern void I830InitpScrn(ScrnInfoPtr pScrn);
+
+/* Symbol lists shared by the i810 and i830 parts. */
+extern const char *I810vgahwSymbols[];
+extern const char *I810ramdacSymbols[];
+extern const char *I810int10Symbols[];
+extern const char *I810vbeSymbols[];
+extern const char *I810ddcSymbols[];
+extern const char *I810fbSymbols[];
+extern const char *I810xaaSymbols[];
+extern const char *I810shadowSymbols[];
+
+extern void I830DPRINTF_stub(const char *filename, int line,
+ const char *function, const char *fmt, ...);
+
+#ifdef _I830_H_
+#define PrintErrorState I830PrintErrorState
+#define WaitRingFunc I830WaitLpRing
+#define RecPtr pI830
+#else
+#define PrintErrorState I810PrintErrorState
+#define WaitRingFunc I810WaitLpRing
+#define RecPtr pI810
+#endif
+
+/* BIOS debug macro */
+#define xf86ExecX86int10_wrapper(pInt, pScrn) do { \
+ if (I810_DEBUG & DEBUG_VERBOSE_BIOS) { \
+ ErrorF("\n\n\n\nExecuting (ax == 0x%x) BIOS call\n", pInt->ax); \
+ ErrorF("Checking Error state before execution\n"); \
+ PrintErrorState(pScrn); \
+ } \
+ xf86ExecX86int10(pInt); \
+ if(I810_DEBUG & DEBUG_VERBOSE_BIOS) { \
+ ErrorF("Checking Error state after execution\n"); \
+ usleep(50000); \
+ PrintErrorState(pScrn); \
+ } \
+} while (0)
+
+#define OUT_RING(n) do { \
+ if (I810_DEBUG & DEBUG_VERBOSE_RING) \
+ ErrorF( "OUT_RING %x: %x, (mask %x)\n", outring, n, ringmask); \
+ *(volatile unsigned int *)(virt + outring) = n; \
+ outring += 4; \
+ outring &= ringmask; \
+} while (0)
+
+#if 1
+#define ADVANCE_LP_RING() do { \
+ RecPtr->LpRing.tail = outring; \
+ if (outring & 0x07) \
+ ErrorF("ADVANCE_LP_RING: " \
+ "outring (0x%x) isn't on a QWord boundary", outring); \
+ OUTREG(LP_RING + RING_TAIL, outring); \
+} while (0)
+#else
+#define ADVANCE_LP_RING() { \
+ RecPtr->LpRing.tail = outring; \
+ if (outring & 0x07) \
+ ErrorF("ADVANCE_LP_RING: " \
+ "outring (0x%x) isn't on a QWord boundary", outring); \
+ ErrorF("head is %d, tail is %d [%d]\n", INREG(LP_RING + RING_HEAD), INREG(LP_RING + RING_TAIL), outring); \
+ OUTREG(LP_RING + RING_TAIL, outring); \
+ ErrorF("head is %d, tail is %d [%d]\n", INREG(LP_RING + RING_HEAD), INREG(LP_RING + RING_TAIL), outring); \
+}
+#endif
+
+/*
+ * 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)
+
+/*
+ * This is for debugging a potential problem writing the tail pointer
+ * close to the end of the ring buffer.
+ */
+#ifndef AVOID_TAIL_END
+#define AVOID_TAIL_END 0
+#endif
+#ifndef AVOID_SIZE
+#define AVOID_SIZE 64
+#endif
+
+#if AVOID_TAIL_END
+
+#define BEGIN_LP_RING(n) \
+ unsigned int outring, ringmask; \
+ volatile unsigned char *virt; \
+ unsigned 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 ((RecPtr->LpRing.tail > RecPtr->LpRing.tail_mask - AVOID_SIZE) || \
+ (RecPtr->LpRing.tail + needed) > \
+ RecPtr->LpRing.tail_mask - AVOID_SIZE) { \
+ needed += RecPtr->LpRing.tail_mask + 1 - RecPtr->LpRing.tail; \
+ ErrorF("BEGIN_LP_RING: skipping last 64 bytes of " \
+ "ring (%d vs %d)\n", needed, (n) * 4); \
+ } \
+ if (RecPtr->LpRing.space < needed) \
+ WaitRingFunc(pScrn, needed, 0); \
+ RecPtr->LpRing.space -= needed; \
+ outring = RecPtr->LpRing.tail; \
+ ringmask = RecPtr->LpRing.tail_mask; \
+ virt = RecPtr->LpRing.virtual_start; \
+ while (needed > (n) * 4) { \
+ ErrorF("BEGIN_LP_RING: putting MI_NOOP at 0x%x (remaining %d)\n", \
+ outring, needed - (n) * 4); \
+ OUT_RING(MI_NOOP); \
+ needed -= 4; \
+ } \
+ if (I810_DEBUG & DEBUG_VERBOSE_RING) \
+ ErrorF( "BEGIN_LP_RING %d in %s\n", n, FUNCTION_NAME);
+
+#else /* AVOID_TAIL_END */
+
+#define BEGIN_LP_RING(n) \
+ unsigned int outring, ringmask; \
+ volatile unsigned char *virt; \
+ unsigned 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 (RecPtr->LpRing.space < needed) \
+ WaitRingFunc(pScrn, needed, 0); \
+ RecPtr->LpRing.space -= needed; \
+ outring = RecPtr->LpRing.tail; \
+ ringmask = RecPtr->LpRing.tail_mask; \
+ virt = RecPtr->LpRing.virtual_start; \
+ if (I810_DEBUG & DEBUG_VERBOSE_RING) \
+ ErrorF( "BEGIN_LP_RING %d in %s\n", n, FUNCTION_NAME);
+
+#endif /* AVOID_TAIL_END */
+
+
+/* Memory mapped register access macros */
+#define INREG8(addr) *(volatile CARD8 *)(RecPtr->MMIOBase + (addr))
+#define INREG16(addr) *(volatile CARD16 *)(RecPtr->MMIOBase + (addr))
+#define INREG(addr) *(volatile CARD32 *)(RecPtr->MMIOBase + (addr))
+
+#define OUTREG8(addr, val) do { \
+ *(volatile CARD8 *)(RecPtr->MMIOBase + (addr)) = (val); \
+ if (I810_DEBUG&DEBUG_VERBOSE_OUTREG) { \
+ ErrorF("OUTREG8(0x%x, 0x%x) in %s\n", addr, val, FUNCTION_NAME); \
+ } \
+} while (0)
+
+#define OUTREG16(addr, val) do { \
+ *(volatile CARD16 *)(RecPtr->MMIOBase + (addr)) = (val); \
+ if (I810_DEBUG&DEBUG_VERBOSE_OUTREG) { \
+ ErrorF("OUTREG16(0x%x, 0x%x) in %s\n", addr, val, FUNCTION_NAME); \
+ } \
+} while (0)
+
+#define OUTREG(addr, val) do { \
+ *(volatile CARD32 *)(RecPtr->MMIOBase + (addr)) = (val); \
+ if (I810_DEBUG&DEBUG_VERBOSE_OUTREG) { \
+ ErrorF("OUTREG(0x%x, 0x%x) in %s\n", addr, val, FUNCTION_NAME); \
+ } \
+} while (0)
+
+/* To remove all debugging, make sure I810_DEBUG is defined as a
+ * preprocessor symbol, and equal to zero.
+ */
+#if 1
+#define I810_DEBUG 0
+#endif
+#ifndef I810_DEBUG
+#warning "Debugging enabled - expect reduced performance"
+extern int I810_DEBUG;
+#endif
+
+#define DEBUG_VERBOSE_ACCEL 0x1
+#define DEBUG_VERBOSE_SYNC 0x2
+#define DEBUG_VERBOSE_VGA 0x4
+#define DEBUG_VERBOSE_RING 0x8
+#define DEBUG_VERBOSE_OUTREG 0x10
+#define DEBUG_VERBOSE_MEMORY 0x20
+#define DEBUG_VERBOSE_CURSOR 0x40
+#define DEBUG_ALWAYS_SYNC 0x80
+#define DEBUG_VERBOSE_DRI 0x100
+#define DEBUG_VERBOSE_BIOS 0x200
+
+/* Size of the mmio region.
+ */
+#define I810_REG_SIZE 0x80000
+
+#ifndef PCI_CHIP_I810
+#define PCI_CHIP_I810 0x7121
+#define PCI_CHIP_I810_DC100 0x7123
+#define PCI_CHIP_I810_E 0x7125
+#define PCI_CHIP_I815 0x1132
+#define PCI_CHIP_I810_BRIDGE 0x7120
+#define PCI_CHIP_I810_DC100_BRIDGE 0x7122
+#define PCI_CHIP_I810_E_BRIDGE 0x7124
+#define PCI_CHIP_I815_BRIDGE 0x1130
+#endif
+
+#ifndef PCI_CHIP_I855_GM
+#define PCI_CHIP_I855_GM 0x3582
+#define PCI_CHIP_I855_GM_BRIDGE 0x3580
+#endif
+
+#ifndef PCI_CHIP_I865_G
+#define PCI_CHIP_I865_G 0x2572
+#define PCI_CHIP_I865_G_BRIDGE 0x2570
+#endif
+
+#define IS_I810(pI810) (pI810->PciInfo->chipType == PCI_CHIP_I810 || \
+ pI810->PciInfo->chipType == PCI_CHIP_I810_DC100 || \
+ pI810->PciInfo->chipType == PCI_CHIP_I810_E)
+#define IS_I815(pI810) (pI810->PciInfo->chipType == PCI_CHIP_I815)
+#define IS_I830(pI810) (pI810->PciInfo->chipType == PCI_CHIP_I830_M)
+#define IS_845G(pI810) (pI810->PciInfo->chipType == PCI_CHIP_845_G)
+#define IS_I85X(pI810) (pI810->PciInfo->chipType == PCI_CHIP_I855_GM)
+#define IS_I865G(pI810) (pI810->PciInfo->chipType == PCI_CHIP_I865_G)
+
+#define IS_MOBILE(pI810) (IS_I830(pI810) || IS_I85X(pI810))
+
+#define GTT_PAGE_SIZE KB(4)
+#define ROUND_TO(x, y) (((x) + (y) - 1) / (y) * (y))
+#define ROUND_DOWN_TO(x, y) ((x) / (y) * (y))
+#define ROUND_TO_PAGE(x) ROUND_TO((x), GTT_PAGE_SIZE)
+#define ROUND_TO_MB(x) ROUND_TO((x), MB(1))
+#define PRIMARY_RINGBUFFER_SIZE KB(128)
+#define MIN_SCRATCH_BUFFER_SIZE KB(16)
+#define MAX_SCRATCH_BUFFER_SIZE KB(64)
+#define HWCURSOR_SIZE GTT_PAGE_SIZE
+#define OVERLAY_SIZE GTT_PAGE_SIZE
+
+/* Use a 64x64 HW cursor */
+#define I810_CURSOR_X 64
+#define I810_CURSOR_Y I810_CURSOR_X
+
+/* XXX Need to check if these are reasonable. */
+#define MAX_DISPLAY_PITCH 2048
+#define MAX_DISPLAY_HEIGHT 2048
+
+#define PIPE_NAME(n) ('A' + (n))
+
+#endif /* _INTEL_COMMON_H_ */
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