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-rw-r--r--src/savage_vbe.c302
1 files changed, 302 insertions, 0 deletions
diff --git a/src/savage_vbe.c b/src/savage_vbe.c
new file mode 100644
index 0000000..f0a0edc
--- /dev/null
+++ b/src/savage_vbe.c
@@ -0,0 +1,302 @@
+/* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/savage/savage_vbe.c,v 1.12 2002/10/02 20:39:55 alanh Exp $ */
+
+#include "savage_driver.h"
+#include "savage_vbe.h"
+
+#if X_BYTE_ORDER == X_LITTLE_ENDIAN
+#define B_O16(x) (x)
+#define B_O32(x) (x)
+#else
+#define B_O16(x) ((((x) & 0xff) << 8) | (((x) & 0xff) >> 8))
+#define B_O32(x) ((((x) & 0xff) << 24) | (((x) & 0xff00) << 8) \
+ | (((x) & 0xff0000) >> 8) | (((x) & 0xff000000) >> 24))
+#endif
+#define L_ADD(x) (B_O32(x) & 0xffff) + ((B_O32(x) >> 12) & 0xffff00)
+
+Bool vbeModeInit( vbeInfoPtr, int );
+static int SavageGetDevice( SavagePtr psav );
+/*static int SavageGetTVType( SavagePtr psav );*/
+
+static void
+SavageClearVM86Regs( xf86Int10InfoPtr pInt )
+{
+ pInt->ax = 0;
+ pInt->bx = 0;
+ pInt->cx = 0;
+ pInt->dx = 0;
+ pInt->si = 0;
+ pInt->di = 0;
+ pInt->es = 0xc000;
+ pInt->num = 0x10;
+}
+
+void
+SavageSetTextMode( SavagePtr psav )
+{
+ /* Restore display device if changed. */
+ if( psav->iDevInfo != psav->iDevInfoPrim ) {
+ SavageClearVM86Regs( psav->pInt10 );
+ psav->pInt10->ax = 0x4f14;
+ psav->pInt10->bx = 0x0003;
+ psav->pInt10->cx = psav->iDevInfoPrim;
+ xf86ExecX86int10( psav->pInt10 );
+ }
+
+ SavageClearVM86Regs( psav->pInt10 );
+
+ psav->pInt10->ax = 0x83;
+
+ xf86ExecX86int10( psav->pInt10 );
+}
+
+
+void
+SavageSetVESAMode( SavagePtr psav, int n, int Refresh )
+{
+ int iDevInfo;
+ static int iCount = 0;
+
+ /* Get current display device status. */
+
+ iDevInfo = SavageGetDevice(psav);
+ psav->iDevInfo = iDevInfo;
+ if( !iCount++ )
+ psav->iDevInfoPrim = psav->iDevInfo;
+ if( psav->CrtOnly )
+ psav->iDevInfo = CRT_ACTIVE;
+ if( psav->TvOn )
+ psav->iDevInfo = TV_ACTIVE;
+
+ /* Establish the refresh rate for this mode. */
+
+ SavageClearVM86Regs( psav->pInt10 );
+ psav->pInt10->ax = 0x4f14; /* S3 extensions */
+ psav->pInt10->bx = 0x0001; /* Set default refresh rate */
+ psav->pInt10->cx = n;
+ psav->pInt10->di = Refresh & 0xffff;
+
+ xf86ExecX86int10( psav->pInt10 );
+
+ /* Set TV type if TV is on. */
+ if( psav->TvOn ) {
+ SavageClearVM86Regs( psav->pInt10 );
+ psav->pInt10->ax = 0x4f14; /* S3 extensions */
+ psav->pInt10->bx = 0x0007; /* TV extensions */
+ psav->pInt10->cx = psav->PAL ? 0x08 : 0x04;
+ psav->pInt10->dx = 0x0c;
+ xf86ExecX86int10( psav->pInt10 );
+ }
+
+ /* Manipulate output device set. */
+ if( psav->iDevInfo != iDevInfo ) {
+ SavageClearVM86Regs( psav->pInt10 );
+ psav->pInt10->ax = 0x4f14; /* S3 extensions */
+ psav->pInt10->bx = 0x0003; /* set active devices */
+ psav->pInt10->cx = psav->PAL ? 0x08 : 0x04;
+ xf86ExecX86int10( psav->pInt10 );
+
+ /* Re-fetch actual device set. */
+ psav->iDevInfo = SavageGetDevice( psav );
+ iDevInfo = psav->iDevInfo;
+ psav->CrtOnly = (iDevInfo == 1);
+ psav->TvOn = !!(iDevInfo & 4);
+ }
+
+ /* Now, make this mode current. */
+
+ if( xf86LoaderCheckSymbol( "VBESetVBEMode" ) )
+ {
+ if( !VBESetVBEMode( psav->pVbe, n, NULL ) )
+ {
+ ErrorF("Set video mode failed\n");
+ }
+ }
+#ifdef XFree86LOADER
+ else
+ {
+ if( !vbeModeInit( psav->pVbe, n ) )
+ {
+ ErrorF("Set video mode failed\n");
+ }
+ }
+#endif
+}
+
+
+/* Function to get supported device list. */
+
+static int SavageGetDevice( SavagePtr psav )
+{
+ SavageClearVM86Regs( psav->pInt10 );
+ psav->pInt10->ax = 0x4f14; /* S3 extensions */
+ psav->pInt10->bx = 0x0103; /* get active devices */
+
+ xf86ExecX86int10( psav->pInt10 );
+
+ return ((psav->pInt10->cx) & 0xf);
+}
+
+
+void
+SavageFreeBIOSModeTable( SavagePtr psav, SavageModeTablePtr* ppTable )
+{
+ int i;
+ SavageModeEntryPtr pMode = (*ppTable)->Modes;
+
+ for( i = (*ppTable)->NumModes; i--; )
+ {
+ if( pMode->RefreshRate )
+ {
+ xfree( pMode->RefreshRate );
+ pMode->RefreshRate = NULL;
+ }
+ }
+
+ xfree( *ppTable );
+}
+
+
+SavageModeTablePtr
+SavageGetBIOSModeTable( SavagePtr psav, int iDepth )
+{
+ int nModes = SavageGetBIOSModes( psav, iDepth, NULL );
+ SavageModeTablePtr pTable;
+
+ pTable = (SavageModeTablePtr)
+ xcalloc( 1, sizeof(SavageModeTableRec) +
+ (nModes-1) * sizeof(SavageModeEntry) );
+ if( pTable ) {
+ pTable->NumModes = nModes;
+ SavageGetBIOSModes( psav, iDepth, pTable->Modes );
+ }
+
+ return pTable;
+}
+
+
+unsigned short
+SavageGetBIOSModes(
+ SavagePtr psav,
+ int iDepth,
+ SavageModeEntryPtr s3vModeTable )
+{
+ unsigned short iModeCount = 0;
+ unsigned short int *mode_list;
+ pointer vbeLinear = NULL;
+ vbeControllerInfoPtr vbe = NULL;
+ int vbeReal;
+ struct vbe_mode_info_block * vmib;
+
+ if( !psav->pVbe )
+ return 0;
+
+ vbe = (vbeControllerInfoPtr) psav->pVbe->memory;
+ vbeLinear = xf86Int10AllocPages( psav->pInt10, 1, &vbeReal );
+ if( !vbeLinear )
+ {
+ ErrorF( "Cannot allocate scratch page in real mode memory." );
+ return 0;
+ }
+ vmib = (struct vbe_mode_info_block *) vbeLinear;
+
+ for (
+ mode_list = xf86int10Addr( psav->pInt10, L_ADD(vbe->VideoModePtr) );
+ *mode_list != 0xffff;
+ mode_list++
+ )
+ {
+ /*
+ * This is a HACK to work around what I believe is a BUG in the
+ * Toshiba Satellite BIOSes in 08/2000 and 09/2000. The BIOS
+ * table for 1024x600 says it has six refresh rates, when in fact
+ * it only has 3. When I ask for rate #4, the BIOS goes into an
+ * infinite loop until the user interrupts it, usually by pressing
+ * Ctrl-Alt-F1. For now, we'll just punt everything with a VESA
+ * number greater than or equal to 0200.
+ *
+ * This also prevents some strange and unusual results seen with
+ * the later ProSavage/PM133 BIOSes directly from S3/VIA.
+ */
+ if( *mode_list >= 0x0200 )
+ continue;
+
+ SavageClearVM86Regs( psav->pInt10 );
+
+ psav->pInt10->ax = 0x4f01;
+ psav->pInt10->cx = *mode_list;
+ psav->pInt10->es = SEG_ADDR(vbeReal);
+ psav->pInt10->di = SEG_OFF(vbeReal);
+ psav->pInt10->num = 0x10;
+
+ xf86ExecX86int10( psav->pInt10 );
+
+ if(
+ (vmib->bits_per_pixel == iDepth) &&
+ (
+ (vmib->memory_model == VBE_MODEL_256) ||
+ (vmib->memory_model == VBE_MODEL_PACKED) ||
+ (vmib->memory_model == VBE_MODEL_RGB)
+ )
+ )
+ {
+ /* This mode is a match. */
+
+ iModeCount++;
+
+ /* If we're supposed to fetch information, do it now. */
+
+ if( s3vModeTable )
+ {
+ int iRefresh = 0;
+
+ s3vModeTable->Width = vmib->x_resolution;
+ s3vModeTable->Height = vmib->y_resolution;
+ s3vModeTable->VesaMode = *mode_list;
+
+ /* Query the refresh rates at this mode. */
+
+ psav->pInt10->cx = *mode_list;
+ psav->pInt10->dx = 0;
+
+ do
+ {
+ if( (iRefresh % 8) == 0 )
+ {
+ if( s3vModeTable->RefreshRate )
+ {
+ s3vModeTable->RefreshRate = (unsigned char *)
+ xrealloc(
+ s3vModeTable->RefreshRate,
+ (iRefresh+8) * sizeof(unsigned char)
+ );
+ }
+ else
+ {
+ s3vModeTable->RefreshRate = (unsigned char *)
+ xcalloc(
+ sizeof(unsigned char),
+ (iRefresh+8)
+ );
+ }
+ }
+
+ psav->pInt10->ax = 0x4f14; /* S3 extended functions */
+ psav->pInt10->bx = 0x0201; /* query refresh rates */
+ psav->pInt10->num = 0x10;
+ xf86ExecX86int10( psav->pInt10 );
+
+ s3vModeTable->RefreshRate[iRefresh++] = psav->pInt10->di;
+ }
+ while( psav->pInt10->dx );
+
+ s3vModeTable->RefreshCount = iRefresh;
+
+ s3vModeTable++;
+ }
+ }
+ }
+
+ xf86Int10FreePages( psav->pInt10, vbeLinear, 1 );
+
+ return iModeCount;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-21 21:58:41 +0000