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859 lines
21 KiB
859 lines
21 KiB
/*++
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Copyright (c) 1992 Microsoft Corporation
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Module Name:
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modeset.c
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Abstract:
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This is the modeset code for the VGA miniport driver.
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Environment:
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kernel mode only
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Notes:
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Revision History:
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--*/
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#include "dderror.h"
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#include "devioctl.h"
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#include "miniport.h"
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#include "ntddvdeo.h"
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#include "video.h"
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#include "vga.h"
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#include "cmdcnst.h"
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#if defined(ALLOC_PRAGMA)
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#pragma alloc_text(PAGE,VgaQueryAvailableModes)
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#pragma alloc_text(PAGE,VgaQueryNumberOfAvailableModes)
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#pragma alloc_text(PAGE,VgaQueryCurrentMode)
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#pragma alloc_text(PAGE,VgaSetMode)
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#pragma alloc_text(PAGE,VgaInterpretCmdStream)
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#pragma alloc_text(PAGE,VgaZeroVideoMemory)
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#endif
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VP_STATUS
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VgaInterpretCmdStream(
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PHW_DEVICE_EXTENSION HwDeviceExtension,
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PUSHORT pusCmdStream
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)
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/*++
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Routine Description:
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Interprets the appropriate command array to set up VGA registers for the
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requested mode. Typically used to set the VGA into a particular mode by
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programming all of the registers
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Arguments:
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HwDeviceExtension - Pointer to the miniport driver's device extension.
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pusCmdStream - array of commands to be interpreted.
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Return Value:
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The status of the operation (can only fail on a bad command); TRUE for
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success, FALSE for failure.
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--*/
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{
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ULONG ulCmd;
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ULONG ulPort;
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UCHAR jValue;
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USHORT usValue;
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ULONG culCount;
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ULONG ulIndex;
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ULONG ulBase;
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if (pusCmdStream == NULL) {
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VideoDebugPrint((1, "VgaInterpretCmdStream - Invalid pusCmdStream\n"));
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return TRUE;
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}
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ulBase = (ULONG)HwDeviceExtension->IOAddress;
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//
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// Now set the adapter to the desired mode.
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//
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while ((ulCmd = *pusCmdStream++) != EOD) {
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//
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// Determine major command type
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//
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switch (ulCmd & 0xF0) {
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//
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// Basic input/output command
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//
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case INOUT:
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//
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// Determine type of inout instruction
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//
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if (!(ulCmd & IO)) {
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//
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// Out instruction. Single or multiple outs?
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//
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if (!(ulCmd & MULTI)) {
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//
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// Single out. Byte or word out?
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//
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if (!(ulCmd & BW)) {
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//
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// Single byte out
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//
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ulPort = *pusCmdStream++;
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jValue = (UCHAR) *pusCmdStream++;
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VideoPortWritePortUchar((PUCHAR)(ulBase+ulPort),
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jValue);
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} else {
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//
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// Single word out
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//
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ulPort = *pusCmdStream++;
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usValue = *pusCmdStream++;
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VideoPortWritePortUshort((PUSHORT)(ulBase+ulPort),
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usValue);
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}
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} else {
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//
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// Output a string of values
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// Byte or word outs?
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//
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if (!(ulCmd & BW)) {
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//
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// String byte outs. Do in a loop; can't use
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// VideoPortWritePortBufferUchar because the data
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// is in USHORT form
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//
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ulPort = ulBase + *pusCmdStream++;
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culCount = *pusCmdStream++;
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while (culCount--) {
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jValue = (UCHAR) *pusCmdStream++;
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VideoPortWritePortUchar((PUCHAR)ulPort,
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jValue);
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}
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} else {
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//
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// String word outs
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//
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ulPort = *pusCmdStream++;
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culCount = *pusCmdStream++;
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VideoPortWritePortBufferUshort((PUSHORT)
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(ulBase + ulPort), pusCmdStream, culCount);
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pusCmdStream += culCount;
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}
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}
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} else {
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// In instruction
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//
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// Currently, string in instructions aren't supported; all
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// in instructions are handled as single-byte ins
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//
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// Byte or word in?
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//
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if (!(ulCmd & BW)) {
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//
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// Single byte in
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//
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ulPort = *pusCmdStream++;
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jValue = VideoPortReadPortUchar((PUCHAR)ulBase+ulPort);
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} else {
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//
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// Single word in
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//
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ulPort = *pusCmdStream++;
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usValue = VideoPortReadPortUshort((PUSHORT)
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(ulBase+ulPort));
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}
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}
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break;
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//
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// Higher-level input/output commands
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//
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case METAOUT:
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//
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// Determine type of metaout command, based on minor
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// command field
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//
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switch (ulCmd & 0x0F) {
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//
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// Indexed outs
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//
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case INDXOUT:
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ulPort = ulBase + *pusCmdStream++;
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culCount = *pusCmdStream++;
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ulIndex = *pusCmdStream++;
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while (culCount--) {
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usValue = (USHORT) (ulIndex +
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(((ULONG)(*pusCmdStream++)) << 8));
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VideoPortWritePortUshort((PUSHORT)ulPort, usValue);
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ulIndex++;
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}
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break;
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//
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// Masked out (read, AND, XOR, write)
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//
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case MASKOUT:
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ulPort = *pusCmdStream++;
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jValue = VideoPortReadPortUchar((PUCHAR)ulBase+ulPort);
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jValue &= *pusCmdStream++;
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jValue ^= *pusCmdStream++;
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VideoPortWritePortUchar((PUCHAR)ulBase + ulPort,
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jValue);
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break;
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//
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// Attribute Controller out
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//
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case ATCOUT:
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ulPort = ulBase + *pusCmdStream++;
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culCount = *pusCmdStream++;
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ulIndex = *pusCmdStream++;
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while (culCount--) {
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// Write Attribute Controller index
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VideoPortWritePortUchar((PUCHAR)ulPort,
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(UCHAR)ulIndex);
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// Write Attribute Controller data
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jValue = (UCHAR) *pusCmdStream++;
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VideoPortWritePortUchar((PUCHAR)ulPort, jValue);
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ulIndex++;
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}
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break;
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//
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// None of the above; error
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//
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default:
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return FALSE;
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}
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break;
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//
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// NOP
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//
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case NCMD:
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break;
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//
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// Unknown command; error
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//
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default:
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return FALSE;
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}
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}
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return TRUE;
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} // end VgaInterpretCmdStream()
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VP_STATUS
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VgaSetMode(
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PHW_DEVICE_EXTENSION HwDeviceExtension,
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PVIDEO_MODE Mode,
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ULONG ModeSize
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)
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/*++
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Routine Description:
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This routine sets the VGA into the requested mode.
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Arguments:
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HwDeviceExtension - Pointer to the miniport driver's device extension.
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Mode - Pointer to the structure containing the information about the
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font to be set.
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ModeSize - Length of the input buffer supplied by the user.
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Return Value:
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ERROR_INSUFFICIENT_BUFFER if the input buffer was not large enough
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for the input data.
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ERROR_INVALID_PARAMETER if the mode number is invalid.
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NO_ERROR if the operation completed successfully.
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--*/
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{
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PVIDEOMODE pRequestedMode;
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//
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// Check if the size of the data in the input buffer is large enough.
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//
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if (ModeSize < sizeof(VIDEO_MODE)) {
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return ERROR_INSUFFICIENT_BUFFER;
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}
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//
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// Extract the clear memory bit.
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//
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if (Mode->RequestedMode & VIDEO_MODE_NO_ZERO_MEMORY) {
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Mode->RequestedMode &= ~VIDEO_MODE_NO_ZERO_MEMORY;
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} else {
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VgaZeroVideoMemory(HwDeviceExtension);
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}
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//
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// Check to see if we are requesting a vlid mode
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//
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if (Mode->RequestedMode >= NumVideoModes) {
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ASSERT(FALSE);
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return ERROR_INVALID_PARAMETER;
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}
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pRequestedMode = &ModesVGA[Mode->RequestedMode];
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#ifdef INT10_MODE_SET
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{
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VIDEO_X86_BIOS_ARGUMENTS biosArguments;
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UCHAR temp;
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UCHAR dummy;
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UCHAR bIsColor;
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ULONG modeNumber;
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VP_STATUS status;
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VideoPortZeroMemory(&biosArguments, sizeof(VIDEO_X86_BIOS_ARGUMENTS));
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modeNumber = pRequestedMode->Int10ModeNumber;
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biosArguments.Eax = modeNumber & 0x0000FFFF;
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biosArguments.Ebx = modeNumber >> 16;
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status = VideoPortInt10(HwDeviceExtension, &biosArguments);
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if (status != NO_ERROR) {
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ASSERT(FALSE);
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return status;
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}
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//
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// If this was the VESA mode modeset, check the return value in eax
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//
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if (modeNumber >> 16) {
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if ( ((biosArguments.Eax & 0x0000FFFF) >> 8) != 0x00) {
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//
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// If we fail, try the mode set again with the other VESA mode
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// index, 6A
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//
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modeNumber = 0x6A;
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biosArguments.Eax = modeNumber;
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status = VideoPortInt10(HwDeviceExtension, &biosArguments);
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if (status != NO_ERROR) {
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ASSERT(FALSE);
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return status;
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}
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//
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// We already know that the VESA modeset for this mode
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// failed. Now lets check to see if the regular
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// 0x6a modeset failed as well.
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//
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biosArguments.Eax = 0x0f00;
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VideoPortInt10(HwDeviceExtension, &biosArguments);
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if ((biosArguments.Eax & 0xff) != modeNumber)
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{
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//
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// The int10 modeset failed. Return the failure back to
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// the system.
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//
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VideoDebugPrint((0, "The INT 10 modeset didn't set the mode.\n"));
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return ERROR_INVALID_PARAMETER;
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}
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}
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}
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//
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// Fix to get 640x350 text mode
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//
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if (!(pRequestedMode->fbType & VIDEO_MODE_GRAPHICS)) {
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if ((pRequestedMode->hres == 640) &&
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(pRequestedMode->vres == 350)) {
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VgaInterpretCmdStream(HwDeviceExtension, VGA_TEXT_1);
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} else {
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//
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// Fix to make sure we always set the colors in text mode to be
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// intensity, and not flashing
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// For this zero out the Mode Control Regsiter bit 3 (index 0x10
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// of the Attribute controller).
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//
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if (VideoPortReadPortUchar(HwDeviceExtension->IOAddress +
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MISC_OUTPUT_REG_READ_PORT) & 0x01) {
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bIsColor = TRUE;
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} else {
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bIsColor = FALSE;
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}
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if (bIsColor) {
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dummy = VideoPortReadPortUchar(HwDeviceExtension->IOAddress +
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INPUT_STATUS_1_COLOR);
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} else {
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dummy = VideoPortReadPortUchar(HwDeviceExtension->IOAddress +
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INPUT_STATUS_1_MONO);
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}
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VideoPortWritePortUchar(HwDeviceExtension->IOAddress +
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ATT_ADDRESS_PORT, (0x10 | VIDEO_ENABLE));
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temp = VideoPortReadPortUchar(HwDeviceExtension->IOAddress +
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ATT_DATA_READ_PORT);
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temp &= 0xF7;
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if (bIsColor) {
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dummy = VideoPortReadPortUchar(HwDeviceExtension->IOAddress +
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INPUT_STATUS_1_COLOR);
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} else {
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dummy = VideoPortReadPortUchar(HwDeviceExtension->IOAddress +
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INPUT_STATUS_1_MONO);
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}
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VideoPortWritePortUchar(HwDeviceExtension->IOAddress +
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ATT_ADDRESS_PORT, (0x10 | VIDEO_ENABLE));
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VideoPortWritePortUchar(HwDeviceExtension->IOAddress +
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ATT_DATA_WRITE_PORT, temp);
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}
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}
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}
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#else
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VgaInterpretCmdStream(HwDeviceExtension, pRequestedMode->CmdStrings);
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#endif
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//
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// Update the location of the physical frame buffer within video memory.
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//
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HwDeviceExtension->PhysicalFrameLength =
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MemoryMaps[pRequestedMode->MemMap].MaxSize;
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HwDeviceExtension->PhysicalFrameBaseOffset.LowPart =
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MemoryMaps[pRequestedMode->MemMap].Start;
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//
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// Store the new mode value.
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//
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HwDeviceExtension->CurrentMode = pRequestedMode;
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HwDeviceExtension->ModeIndex = Mode->RequestedMode;
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return NO_ERROR;
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} //end VgaSetMode()
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VP_STATUS
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VgaQueryAvailableModes(
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PHW_DEVICE_EXTENSION HwDeviceExtension,
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PVIDEO_MODE_INFORMATION ModeInformation,
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ULONG ModeInformationSize,
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PULONG OutputSize
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)
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/*++
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Routine Description:
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This routine returns the list of all available available modes on the
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card.
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Arguments:
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HwDeviceExtension - Pointer to the miniport driver's device extension.
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ModeInformation - Pointer to the output buffer supplied by the user.
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This is where the list of all valid modes is stored.
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ModeInformationSize - Length of the output buffer supplied by the user.
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OutputSize - Pointer to a buffer in which to return the actual size of
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the data in the buffer. If the buffer was not large enough, this
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contains the minimum required buffer size.
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Return Value:
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ERROR_INSUFFICIENT_BUFFER if the output buffer was not large enough
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for the data being returned.
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NO_ERROR if the operation completed successfully.
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--*/
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{
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PVIDEO_MODE_INFORMATION videoModes = ModeInformation;
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ULONG i;
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UNREFERENCED_PARAMETER(HwDeviceExtension);
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//
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// Find out the size of the data to be put in the buffer and return
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// that in the status information (whether or not the information is
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// there). If the buffer passed in is not large enough return an
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// appropriate error code.
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//
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if (ModeInformationSize < (*OutputSize =
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NumVideoModes * sizeof(VIDEO_MODE_INFORMATION)) ) {
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return ERROR_INSUFFICIENT_BUFFER;
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}
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//
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// For each mode supported by the card, store the mode characteristics
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// in the output buffer.
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//
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for (i = 0; i < NumVideoModes; i++, videoModes++) {
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videoModes->Length = sizeof(VIDEO_MODE_INFORMATION);
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videoModes->ModeIndex = i;
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videoModes->VisScreenWidth = ModesVGA[i].hres;
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videoModes->ScreenStride = ModesVGA[i].wbytes;
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videoModes->VisScreenHeight = ModesVGA[i].vres;
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videoModes->NumberOfPlanes = ModesVGA[i].numPlanes;
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videoModes->BitsPerPlane = ModesVGA[i].bitsPerPlane;
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videoModes->Frequency = 1;
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videoModes->XMillimeter = 320; // temporary hardcoded constant
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videoModes->YMillimeter = 240; // temporary hardcoded constant
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videoModes->NumberRedBits = 6;
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videoModes->NumberGreenBits = 6;
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videoModes->NumberBlueBits = 6;
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videoModes->RedMask = 0;
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videoModes->GreenMask = 0;
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videoModes->BlueMask = 0;
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videoModes->AttributeFlags = ModesVGA[i].fbType |
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VIDEO_MODE_PALETTE_DRIVEN | VIDEO_MODE_MANAGED_PALETTE;
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}
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return NO_ERROR;
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} // end VgaGetAvailableModes()
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VP_STATUS
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VgaQueryNumberOfAvailableModes(
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PHW_DEVICE_EXTENSION HwDeviceExtension,
|
|
PVIDEO_NUM_MODES NumModes,
|
|
ULONG NumModesSize,
|
|
PULONG OutputSize
|
|
)
|
|
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
This routine returns the number of available modes for this particular
|
|
video card.
|
|
|
|
Arguments:
|
|
|
|
HwDeviceExtension - Pointer to the miniport driver's device extension.
|
|
|
|
NumModes - Pointer to the output buffer supplied by the user. This is
|
|
where the number of modes is stored.
|
|
|
|
NumModesSize - Length of the output buffer supplied by the user.
|
|
|
|
OutputSize - Pointer to a buffer in which to return the actual size of
|
|
the data in the buffer.
|
|
|
|
Return Value:
|
|
|
|
ERROR_INSUFFICIENT_BUFFER if the output buffer was not large enough
|
|
for the data being returned.
|
|
|
|
NO_ERROR if the operation completed successfully.
|
|
|
|
--*/
|
|
|
|
{
|
|
UNREFERENCED_PARAMETER(HwDeviceExtension);
|
|
|
|
//
|
|
// Find out the size of the data to be put in the the buffer and return
|
|
// that in the status information (whether or not the information is
|
|
// there). If the buffer passed in is not large enough return an
|
|
// appropriate error code.
|
|
//
|
|
|
|
if (NumModesSize < (*OutputSize = sizeof(VIDEO_NUM_MODES)) ) {
|
|
|
|
return ERROR_INSUFFICIENT_BUFFER;
|
|
|
|
}
|
|
|
|
//
|
|
// Store the number of modes into the buffer.
|
|
//
|
|
|
|
NumModes->NumModes = NumVideoModes;
|
|
NumModes->ModeInformationLength = sizeof(VIDEO_MODE_INFORMATION);
|
|
|
|
return NO_ERROR;
|
|
|
|
} // end VgaGetNumberOfAvailableModes()
|
|
|
|
VP_STATUS
|
|
VgaQueryCurrentMode(
|
|
PHW_DEVICE_EXTENSION HwDeviceExtension,
|
|
PVIDEO_MODE_INFORMATION ModeInformation,
|
|
ULONG ModeInformationSize,
|
|
PULONG OutputSize
|
|
)
|
|
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
This routine returns a description of the current video mode.
|
|
|
|
Arguments:
|
|
|
|
HwDeviceExtension - Pointer to the miniport driver's device extension.
|
|
|
|
ModeInformation - Pointer to the output buffer supplied by the user.
|
|
This is where the current mode information is stored.
|
|
|
|
ModeInformationSize - Length of the output buffer supplied by the user.
|
|
|
|
OutputSize - Pointer to a buffer in which to return the actual size of
|
|
the data in the buffer. If the buffer was not large enough, this
|
|
contains the minimum required buffer size.
|
|
|
|
Return Value:
|
|
|
|
ERROR_INSUFFICIENT_BUFFER if the output buffer was not large enough
|
|
for the data being returned.
|
|
|
|
NO_ERROR if the operation completed successfully.
|
|
|
|
--*/
|
|
|
|
{
|
|
//
|
|
//
|
|
// check if a mode has been set
|
|
//
|
|
|
|
if (HwDeviceExtension->CurrentMode == NULL) {
|
|
|
|
return ERROR_INVALID_FUNCTION;
|
|
|
|
}
|
|
|
|
//
|
|
// Find out the size of the data to be put in the the buffer and return
|
|
// that in the status information (whether or not the information is
|
|
// there). If the buffer passed in is not large enough return an
|
|
// appropriate error code.
|
|
//
|
|
|
|
if (ModeInformationSize < (*OutputSize = sizeof(VIDEO_MODE_INFORMATION))) {
|
|
|
|
return ERROR_INSUFFICIENT_BUFFER;
|
|
|
|
}
|
|
|
|
//
|
|
// Store the characteristics of the current mode into the buffer.
|
|
//
|
|
|
|
ModeInformation->Length = sizeof(VIDEO_MODE_INFORMATION);
|
|
ModeInformation->ModeIndex = HwDeviceExtension->ModeIndex;
|
|
ModeInformation->VisScreenWidth = HwDeviceExtension->CurrentMode->hres;
|
|
ModeInformation->ScreenStride = HwDeviceExtension->CurrentMode->wbytes;
|
|
ModeInformation->VisScreenHeight = HwDeviceExtension->CurrentMode->vres;
|
|
ModeInformation->NumberOfPlanes = HwDeviceExtension->CurrentMode->numPlanes;
|
|
ModeInformation->BitsPerPlane = HwDeviceExtension->CurrentMode->bitsPerPlane;
|
|
|
|
ModeInformation->Frequency = 1;
|
|
ModeInformation->XMillimeter = 320; // temporary hardcoded constant
|
|
ModeInformation->YMillimeter = 240; // temporary hardcoded constant
|
|
ModeInformation->NumberRedBits = 6;
|
|
ModeInformation->NumberGreenBits = 6;
|
|
ModeInformation->NumberBlueBits = 6;
|
|
ModeInformation->RedMask = 0;
|
|
ModeInformation->GreenMask = 0;
|
|
ModeInformation->BlueMask = 0;
|
|
ModeInformation->AttributeFlags = HwDeviceExtension->CurrentMode->fbType |
|
|
VIDEO_MODE_PALETTE_DRIVEN | VIDEO_MODE_MANAGED_PALETTE;
|
|
|
|
return NO_ERROR;
|
|
|
|
} // end VgaQueryCurrentMode()
|
|
|
|
|
|
VOID
|
|
VgaZeroVideoMemory(
|
|
PHW_DEVICE_EXTENSION HwDeviceExtension
|
|
)
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
This routine zeros the first 256K on the VGA.
|
|
|
|
Arguments:
|
|
|
|
HwDeviceExtension - Pointer to the miniport driver's device extension.
|
|
|
|
|
|
Return Value:
|
|
|
|
None.
|
|
|
|
--*/
|
|
{
|
|
UCHAR temp;
|
|
|
|
//
|
|
// Map font buffer at A0000
|
|
//
|
|
|
|
VgaInterpretCmdStream(HwDeviceExtension, EnableA000Data);
|
|
|
|
//
|
|
// Enable all planes.
|
|
//
|
|
VideoPortWritePortUchar(HwDeviceExtension->IOAddress + SEQ_ADDRESS_PORT,
|
|
IND_MAP_MASK);
|
|
|
|
temp = VideoPortReadPortUchar(HwDeviceExtension->IOAddress +
|
|
SEQ_DATA_PORT) | (UCHAR)0x0F;
|
|
|
|
VideoPortWritePortUchar(HwDeviceExtension->IOAddress + SEQ_DATA_PORT,
|
|
temp);
|
|
|
|
//
|
|
// Zero the memory.
|
|
//
|
|
|
|
VideoPortZeroDeviceMemory(HwDeviceExtension->VideoMemoryAddress, 0xFFFF);
|
|
|
|
VgaInterpretCmdStream(HwDeviceExtension, DisableA000Color);
|
|
|
|
}
|