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/****************************************************************************
******************************************************************************* ******************************************* * Copyright (c) 1995, Cirrus Logic, Inc. ** * All Rights Reserved ** ******************************************** PROJECT: Laguna I (CL-GD5462) - ** FILE: sync.c** Initial AUTHOR: Benny Ng* Major re-write: Noel VanHook** DESCRIPTION:* This module contains the implementation of DrvSynchronize()* routine.** MODULES:* DrvSynchronize()** REVISION HISTORY:* 7/06/95 Benny Ng Initial version** $Log: X:/log/laguna/nt35/displays/cl546x/sync.c $* * Rev 1.13 22 Apr 1997 11:06:36 noelv* Removed frame buffer cache invalidate since FB cache is disabled.* * Rev 1.12 09 Apr 1997 10:50:06 SueS* Changed sw_test_flag to pointer_switch.* * Rev 1.11 08 Apr 1997 12:32:00 einkauf* * add SYNC_W_3D to coordinate MCD/2D hw access* * Rev 1.10 04 Feb 1997 13:52:36 noelv* Fixed typo.* * Rev 1.9 04 Feb 1997 10:50:56 noelv* Added workaround for 5465 direct frame buffer readback bug.* * Rev 1.8 26 Nov 1996 10:45:48 SueS* Changed WriteLogFile parameters for buffering.* * Rev 1.7 13 Nov 1996 17:05:34 SueS* Changed WriteFile calls to WriteLogFile.* * Rev 1.6 20 Aug 1996 11:04:32 noelv* Bugfix release from Frido 8-19-96* * Rev 1.1 15 Aug 1996 11:39:20 frido* Added precompiled header.* * Rev 1.0 14 Aug 1996 17:16:32 frido* Initial revision.* * Rev 1.5 07 Aug 1996 08:30:56 noelv* added comments* * Rev 1.4 20 Mar 1996 16:09:44 noelv* * Updated data logging* * Rev 1.3 05 Mar 1996 11:59:18 noelv* Frido version 19 * * Rev 1.1 20 Jan 1996 01:11:38 frido* * Rev 1.6 15 Jan 1996 17:01:34 NOELV* * Rev 1.5 12 Jan 1996 10:54:30 NOELV* Totally re-written.* * Rev 1.4 22 Sep 1995 10:24:58 NOELV* Re-aranged the order of the tests.* * Rev 1.1 19 Sep 1995 16:31:02 NOELV* Ported to rev AB.* * Rev 1.0 25 Jul 1995 11:23:22 NOELV* Initial revision.* * Rev 1.1 07 Jul 1995 10:37:22 BENNYN* Initial version* * Rev 1.0 06 Jul 1995 14:55:48 BENNYN* Initial revision.*********************************************************************************************************************************************************/
/*----------------------------- INCLUDES ----------------------------------*/#include "precomp.h"
/*----------------------------- DEFINES -----------------------------------*/#define DBGDISP
#define MAX_CNT 0x7FFFFF
#define BLT_RDY_BIT 0x1L
#define BLT_FLAG_BIT 0x2L
#define WF_EMPTY_BIT 0x4L
#define BITS_CHK (BLT_RDY_BIT | BLT_FLAG_BIT | WF_EMPTY_BIT)
#define ENGINE_IDLE 0
#define SYNC_DBG_LEVEL 0
//
// If data logging is enabled, Prototype the logging files.
//
#if LOG_CALLS
void LogSync( int acc, PPDEV ppdev, int count);
//
// If data logging is not enabled, compile out the calls.
//
#else
#define LogSync(acc, ppdev, count)
#endif
/****************************************************************************
* FUNCTION NAME: DrvSynchronize()** REVISION HISTORY:* 7/06/95 Benny Ng Initial version****************************************************************************/VOID DrvSynchronize(DHPDEV dhpdev, RECTL *prcl){
PPDEV ppdev = (PPDEV) dhpdev;
SYNC_W_3D(ppdev);
//
// NOTE: We also call this function from within the driver.
// When we do, we don't bother to set prcl. If you need to use
// prcl here, you need to find where we call DrvSynchronize, and
// set prcl to a real value.
//
//
// Make the first chip test as fast as possible. If the chip
// is already idle, we want to return to NT as fast as possible.
//
if ( LLDR_SZ (grSTATUS) == ENGINE_IDLE) { LogSync(0, ppdev, 0); }
//
// Alright, the chip isn't idle yet.
// Go into a wait loop.
//
else { ULONG ultmp; LONG delaycnt = 1;
while (1) { ultmp = LLDR_SZ (grSTATUS); if ((ultmp & BITS_CHK) == ENGINE_IDLE) { LogSync(0, ppdev, delaycnt); break; }
if (delaycnt++ >= MAX_CNT) { //
// The chip never went idle. This most likely means the chip
// is totally dead. In a checked build we will halt with a
// debug message.
// In a free build we will return to NT and hope for the best.
//
LogSync(1, ppdev, 0); RIP("Chip failed to go idle in DrvSynchronize!\n"); break; } } }
//
// We can skp this 'cause frame buffer caching is broken.
//
#if 0
#if DRIVER_5465
{ //
// The 5465 Rev AA and Rev AB have a bug.
// We must invalidate the frame buffer cache before direct
// frame buffer accesses will work correctly.
// We do this with two DWORD reads of the frame buffer,
// 8 QWORDS apart.
//
DWORD temp;
temp = * ((volatile DWORD *) (ppdev->pjScreen)); temp = * ((volatile DWORD *) (ppdev->pjScreen+64)); } #endif
#endif
return;}
// meant to be called only from .asm routines - .c routines use SYNC_W_3D macro
VOID Sync_w_3d_proc(PPDEV ppdev){ SYNC_W_3D(ppdev);}
#if LOG_CALLS
// ============================================================================
//
// Everything from here down is for data logging and is not used in the
// production driver.
//
// ============================================================================
// ****************************************************************************
//
// LogPaint()
// This routine is called only from DrvPaint()
// Dump information to a file about what is going on in DrvPaint land.
//
// ****************************************************************************
void LogSync( int acc, PPDEV ppdev, int count){ char buf[256]; int i;
#if ENABLE_LOG_SWITCH
if (pointer_switch == 0) return; #endif
i = sprintf(buf,"DrvSync: "); WriteLogFile(ppdev->pmfile, buf, i, ppdev->TxtBuff, &ppdev->TxtBuffIndex);
switch(acc) { case 0: // Accelerated
i = sprintf(buf,"Wait %d Idle ",count); break;
case 1: // Punted
i = sprintf(buf, "Never idle "); break;
default: i = sprintf(buf, "PUNT unknown "); break;
} WriteLogFile(ppdev->pmfile, buf, i, ppdev->TxtBuff, &ppdev->TxtBuffIndex);
i = sprintf(buf,"\r\n"); WriteLogFile(ppdev->pmfile, buf, i, ppdev->TxtBuff, &ppdev->TxtBuffIndex);
}
#endif
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