#include <Vga.h>

Inheritance diagram for PPCVga:

Collaboration diagram for PPCVga:

Public Member Functions
void	initialise ()

virtual bool	setMode (int mode)

virtual bool	setLargestTextMode ()

virtual bool	isMode (size_t nCols, size_t nRows, bool bIsText, size_t nBpp=0)

virtual bool	isLargestTextMode ()

virtual size_t	getNumCols ()

virtual size_t	getNumRows ()

virtual void	rememberMode ()

virtual void	restoreMode ()

virtual void	pokeBuffer (uint8_t *pBuffer, size_t nBufLen)

virtual void	peekBuffer (uint8_t *pBuffer, size_t nBufLen)

virtual void	moveCursor (size_t nX, size_t nY)

	operator uint16_t * () const

Public Member Functions inherited from Vga
virtual void	setControl (VgaControl which)=0

virtual void	clearControl (VgaControl which)=0

Private Member Functions
	PPCVga (const PPCVga &)

PPCVga &	operator= (const PPCVga &)

void	putChar (char c, int x, int y, unsigned int f, unsigned int b)

Private Attributes
uint16_t	m_pTextBuffer [(MAX_WIDTH/FONT_WIDTH)*(MAX_HEIGHT/FONT_HEIGHT)]

MemoryRegion	m_Framebuffer

uint8_t *	m_pFramebuffer

uint32_t	m_Width

uint32_t	m_Height

uint32_t	m_Depth

uint32_t	m_Stride

uint32_t	m_pColours [16]

Additional Inherited Members
Public Types inherited from Vga
enum	VgaControl { LineGraphics = 2, Blink = 3 }

Detailed Description

Vga device abstraction.

Definition at line 50 of file kernel/machine/ppc_common/Vga.h.

Member Function Documentation

virtual size_t PPCVga::getNumCols ( )

inlinevirtual

Returns: The number of columns in the current mode.

Implements Vga.

Definition at line 102 of file kernel/machine/ppc_common/Vga.h.

References m_Width.

virtual size_t PPCVga::getNumRows ( )

inlinevirtual

Returns: The number of rows in the current mode.

Implements Vga.

Definition at line 110 of file kernel/machine/ppc_common/Vga.h.

References m_Height.

void PPCVga::initialise ( )

Todo:: Something with VirtualAddressSpace here?

Definition at line 38 of file kernel/machine/ppc_common/Vga.cc.

References PhysicalMemoryManager::allocateRegion(), PhysicalMemoryManager::continuous, PhysicalMemoryManager::force, OpenFirmware::instance(), PhysicalMemoryManager::instance(), VirtualAddressSpace::KernelMode, X86Vga::m_pFramebuffer, PhysicalMemoryManager::nonRamMemory, MemoryRegion::virtualAddress(), VirtualAddressSpace::Write, and VirtualAddressSpace::WriteThrough.

virtual bool PPCVga::isLargestTextMode ( )

inlinevirtual

Tests if the current video mode is the largest text mode.

Returns: True if the current video mode is equal to the largest text mode.

Implements Vga.

Definition at line 94 of file kernel/machine/ppc_common/Vga.h.

virtual bool PPCVga::isMode	(	size_t	nCols,
		size_t	nRows,
		bool	bIsText,
		size_t	nBpp = `0`
	)

inlinevirtual

Tests the current video mode.

Returns: True if the current mode matches the given arguments.

Implements Vga.

Definition at line 85 of file kernel/machine/ppc_common/Vga.h.

virtual void PPCVga::moveCursor	(	size_t	nX,
		size_t	nY
	)

inlinevirtual

Moves the cursor to the position specified by the parameters.

Parameters

nX	The column to move to.
nY	The row to move to.

Implements Vga.

Definition at line 156 of file kernel/machine/ppc_common/Vga.h.

References m_pTextBuffer.

void PPCVga::peekBuffer	(	uint8_t *	pBuffer,
		size_t	nBufLen
	)

virtual

Copies the current framebuffer into the given buffer.

The buffer is assumed to be in the correct format for directly copying from video memory. This will obviously depend on the current mode (text/graphical) as well as resolution and bits per pixel (graphics mode only).

Parameters

A	pointer to the buffer.
The	length of pBuffer.

Implements Vga.

Definition at line 160 of file kernel/machine/ppc_common/Vga.cc.

References X86Vga::m_pFramebuffer.

Referenced by restoreMode().

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void PPCVga::pokeBuffer	(	uint8_t *	pBuffer,
		size_t	nBufLen
	)

virtual

Copies the given buffer into video memory, replacing the current framebuffer.

The buffer is assumed to be in the correct format for directly copying into video memory. This will obviously depend on the current mode (text/graphical) as well as resolution and bits per pixel (graphics mode only).

Parameters

pBuffer	A pointer to the buffer to swap into video memory.
nBufLen	The length of pBuffer.

Implements Vga.

Definition at line 137 of file kernel/machine/ppc_common/Vga.cc.

Referenced by restoreMode().

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virtual void PPCVga::rememberMode ( )

inlinevirtual

Stores the current video mode.

Implements Vga.

Definition at line 118 of file kernel/machine/ppc_common/Vga.h.

virtual void PPCVga::restoreMode ( )

inlinevirtual

Restores the saved video mode from a rememberMode() call.

Implements Vga.

Definition at line 125 of file kernel/machine/ppc_common/Vga.h.

References peekBuffer(), and pokeBuffer().

virtual bool PPCVga::setLargestTextMode ( )

inlinevirtual

Sets the largest possible text mode.

Returns: True on success, false on failure.

Implements Vga.

Definition at line 75 of file kernel/machine/ppc_common/Vga.h.

virtual bool PPCVga::setMode ( int mode )

inlinevirtual

Changes the mode the VGA device is in.

Parameters

nCols	The number of columns required.
nRows	The number of rows required.
bIsText	True if the caller requires a text mode, false if graphical.
nBpp	Only applicable for graphics modes - the number of bits per pixel.