mga_vid.c

君正早期ucos系统(只有早期的才不没有打包成库),MPLAYER,文件系统,图片解码,浏览,电子书,录音,想学ucos,识货的人就下吧 russblock fmradio explore set

//#define CRTC2

// YUY2 support (see config.format) added by A'rpi/ESP-team
// double buffering added by A'rpi/ESP-team
// brightness/contrast introduced by eyck
// multiple card support by Attila Kinali <[e-mail]>

// Set this value, if autodetection fails! (video ram size in megabytes)
// #define MGA_MEMORY_SIZE 16

//#define MGA_ALLOW_IRQ

#define MGA_VSYNC_POS 2

/*
 *
 * mga_vid.c
 *
 * Copyright (C) 1999 Aaron Holtzman
 * 
 * Module skeleton based on gutted agpgart module by Jeff Hartmann 
 * <[e-mail]>
 *
 * Matrox MGA G200/G400 YUV Video Interface module Version 0.1.0
 * 
 * BES == Back End Scaler
 * 
 * This software has been released under the terms of the GNU Public
 * license. See http://www.gnu.org/copyleft/gpl.html for details.
 */

//It's entirely possible this major conflicts with something else
//use the 'major' parameter to override the default major number (178)
/* mknod /dev/mga_vid c 178 0 */

#include <linux/config.h>
#include <linux/version.h>
#include <linux/module.h>
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/mm.h>
#include "mplaylib.h"
#include <linux/errno.h>

#if LINUX_VERSION_CODE < KERNEL_VERSION(2,4,10)
#include <linux/malloc.h>
#else
#include <linux/slab.h>
#endif

#include <linux/pci.h>
#include <linux/ioport.h>
#include <linux/init.h>

#include "mga_vid.h"

#ifdef CONFIG_MTRR 
#include <asm/mtrr.h>
#endif

#ifdef CONFIG_DEVFS_FS
#include <linux/devfs_fs_kernel.h>
#endif

#include <asm/uaccess.h>
#include <asm/system.h>
#include <asm/io.h>

#define TRUE 1
#define FALSE 0

#define DEFAULT_MGA_VID_MAJOR 178

#ifndef PCI_DEVICE_ID_MATROX_G200_PCI 
#define PCI_DEVICE_ID_MATROX_G200_PCI 0x0520
#endif

#ifndef PCI_DEVICE_ID_MATROX_G200_AGP 
#define PCI_DEVICE_ID_MATROX_G200_AGP 0x0521
#endif

#ifndef PCI_DEVICE_ID_MATROX_G400 
#define PCI_DEVICE_ID_MATROX_G400 0x0525
#endif

#ifndef PCI_DEVICE_ID_MATROX_G550 
#define PCI_DEVICE_ID_MATROX_G550 0x2527
#endif

#ifndef PCI_SUBSYSTEM_ID_MATROX_G400_DH_16MB
#define PCI_SUBSYSTEM_ID_MATROX_G400_DH_16MB 0x2159
#endif

#ifndef PCI_SUBSYSTEM_ID_MATROX_G400_16MB_SGRAM
#define PCI_SUBSYSTEM_ID_MATROX_G400_16MB_SGRAM 0x19d8
#endif

#ifndef PCI_SUBSYSTEM_ID_MATROX_G400_16MB_SDRAM
#define PCI_SUBSYSTEM_ID_MATROX_G400_16MB_SDRAM 0x0328
#endif

MODULE_AUTHOR("Aaron Holtzman <[e-mail]>");
#ifdef MODULE_LICENSE
MODULE_LICENSE("GPL");
#endif

#define PARAM_BRIGHTNESS "brightness="
#define PARAM_CONTRAST "contrast="
#define PARAM_BLACKIE "blackie="

// set PARAM_BUFF_SIZE to just below 4k because some kernel versions
// store additional information in the memory page which leads to
// the allocation of an additional page if exactly 4k is used
#define PARAM_BUFF_SIZE 4000

#ifndef min
#define min(x,y) (((x)<(y))?(x):(y))
#endif

#if LINUX_VERSION_CODE < KERNEL_VERSION(2,4,0)
#include <linux/ctype.h>

static unsigned long simple_strtoul(const char *cp,char **endp,unsigned int base)
{
        unsigned long result = 0,value;

        if (!base) {
                base = 10;
                if (*cp == '0') {
                        base = 8;
                        cp++;
                        if ((*cp == 'x') && isxdigit(cp[1])) {
                                cp++;
                                base = 16;
                        }
                }
        }
        while (isxdigit(*cp) && (value = isdigit(*cp) ? *cp-'0' : (islower(*cp)
            ? toupper(*cp) : *cp)-'A'+10) < base) {
                result = result*base + value;
                cp++;
        }
        if (endp)
                *endp = (char *)cp;
        return result;
}

static long simple_strtol(const char *cp,char **endp,unsigned int base)
{
        if(*cp=='-')
                return -simple_strtoul(cp+1,endp,base);
        return simple_strtoul(cp,endp,base);
}
#endif


typedef struct bes_registers_s
{
	//BES Control
	uint32_t besctl;
	//BES Global control
	uint32_t besglobctl;
	//Luma control (brightness and contrast)
	uint32_t beslumactl;
	//Line pitch
	uint32_t bespitch;

	//Buffer A-1 Chroma 3 plane org
	uint32_t besa1c3org;
	//Buffer A-1 Chroma org
	uint32_t besa1corg;
	//Buffer A-1 Luma org
	uint32_t besa1org;

	//Buffer A-2 Chroma 3 plane org
	uint32_t besa2c3org;
	//Buffer A-2 Chroma org
	uint32_t besa2corg;
	//Buffer A-2 Luma org
	uint32_t besa2org;

	//Buffer B-1 Chroma 3 plane org
	uint32_t besb1c3org;
	//Buffer B-1 Chroma org
	uint32_t besb1corg;
	//Buffer B-1 Luma org
	uint32_t besb1org;

	//Buffer B-2 Chroma 3 plane org
	uint32_t besb2c3org;
	//Buffer B-2 Chroma org
	uint32_t besb2corg;
	//Buffer B-2 Luma org
	uint32_t besb2org;

	//BES Horizontal coord
	uint32_t beshcoord;
	//BES Horizontal inverse scaling [5.14]
	uint32_t beshiscal;
	//BES Horizontal source start [10.14] (for scaling)
	uint32_t beshsrcst;
	//BES Horizontal source ending [10.14] (for scaling) 
	uint32_t beshsrcend;
	//BES Horizontal source last 
	uint32_t beshsrclst;

	
	//BES Vertical coord
	uint32_t besvcoord;
	//BES Vertical inverse scaling [5.14]
	uint32_t besviscal;
	//BES Field 1 vertical source last position
	uint32_t besv1srclst;
	//BES Field 1 weight start
	uint32_t besv1wght;
	//BES Field 2 vertical source last position
	uint32_t besv2srclst;
	//BES Field 2 weight start
	uint32_t besv2wght;


	//configurable stuff
	int blackie;

} bes_registers_t;

#ifdef CRTC2
typedef struct crtc2_registers_s
{
	uint32_t c2ctl;
	uint32_t c2datactl;
	uint32_t c2misc;
	uint32_t c2hparam;
	uint32_t c2hsync;
	uint32_t c2offset;
	uint32_t c2pl2startadd0;
	uint32_t c2pl2startadd1;
	uint32_t c2pl3startadd0;
	uint32_t c2pl3startadd1;
	uint32_t c2preload;
	uint32_t c2spicstartadd0;
	uint32_t c2spicstartadd1;
	uint32_t c2startadd0;
	uint32_t c2startadd1;
	uint32_t c2subpiclut;
	uint32_t c2vcount;
	uint32_t c2vparam;
	uint32_t c2vsync;
} crtc2_registers_t;
#endif





//All register offsets are converted to word aligned offsets (32 bit)
//because we want all our register accesses to be 32 bits
#define VCOUNT      0x1e20

#define PALWTADD      0x3c00 // Index register for X_DATAREG port
#define X_DATAREG     0x3c0a

#define XMULCTRL      0x19
#define BPP_8         0x00
#define BPP_15        0x01
#define BPP_16        0x02
#define BPP_24        0x03
#define BPP_32_DIR    0x04
#define BPP_32_PAL    0x07

#define XCOLMSK       0x40
#define X_COLKEY      0x42
#define XKEYOPMODE    0x51
#define XCOLMSK0RED   0x52
#define XCOLMSK0GREEN 0x53
#define XCOLMSK0BLUE  0x54
#define XCOLKEY0RED   0x55
#define XCOLKEY0GREEN 0x56
#define XCOLKEY0BLUE  0x57

#ifdef CRTC2

/*CRTC2 registers*/
#define XMISCCTRL  0x1e
#define C2CTL       0x3c10 
#define C2DATACTL   0x3c4c
#define C2MISC      0x3c44
#define C2HPARAM    0x3c14
#define C2HSYNC     0x3c18
#define C2OFFSET    0x3c40
#define C2PL2STARTADD0 0x3c30  // like BESA1CORG
#define C2PL2STARTADD1 0x3c34  // like BESA2CORG
#define C2PL3STARTADD0 0x3c38  // like BESA1C3ORG
#define C2PL3STARTADD1 0x3c3c  // like BESA2C3ORG
#define C2PRELOAD   0x3c24
#define C2SPICSTARTADD0 0x3c54
#define C2SPICSTARTADD1 0x3c58
#define C2STARTADD0 0x3c28  // like BESA1ORG
#define C2STARTADD1 0x3c2c  // like BESA2ORG
#define C2SUBPICLUT 0x3c50
#define C2VCOUNT    0x3c48
#define C2VPARAM    0x3c1c
#define C2VSYNC     0x3c20

#endif

// Backend Scaler registers
#define BESCTL      0x3d20
#define BESGLOBCTL  0x3dc0
#define BESLUMACTL  0x3d40
#define BESPITCH    0x3d24

#define BESA1C3ORG  0x3d60
#define BESA1CORG   0x3d10
#define BESA1ORG    0x3d00

#define BESA2C3ORG  0x3d64 
#define BESA2CORG   0x3d14
#define BESA2ORG    0x3d04

#define BESB1C3ORG  0x3d68
#define BESB1CORG   0x3d18
#define BESB1ORG    0x3d08

#define BESB2C3ORG  0x3d6C
#define BESB2CORG   0x3d1C
#define BESB2ORG    0x3d0C

#define BESHCOORD   0x3d28
#define BESHISCAL   0x3d30
#define BESHSRCEND  0x3d3C
#define BESHSRCLST  0x3d50
#define BESHSRCST   0x3d38
#define BESV1WGHT   0x3d48
#define BESV2WGHT   0x3d4c
#define BESV1SRCLST 0x3d54
#define BESV2SRCLST 0x3d58
#define BESVISCAL   0x3d34
#define BESVCOORD   0x3d2c
#define BESSTATUS   0x3dc4

#define CRTCX	    0x1fd4
#define CRTCD	    0x1fd5
#define	IEN	    0x1e1c
#define ICLEAR	    0x1e18
#define STATUS      0x1e14


// global devfs handle for /dev/mga_vid
#ifdef CONFIG_DEVFS_FS
static devfs_handle_t dev_handle = NULL;
#endif

// card local config
typedef struct mga_card_s {

// local devfs handle for /dev/mga_vidX
#ifdef CONFIG_DEVFS_FS
	devfs_handle_t dev_handle;
#endif

	uint8_t *param_buff; // buffer for read()
	uint32_t param_buff_size;
	uint32_t param_buff_len;
	bes_registers_t regs;
#ifdef CRTC2
	crtc2_registers_t cregs;
#endif
	uint32_t vid_in_use;
	uint32_t is_g400;
	uint32_t vid_src_ready;
	uint32_t vid_overlay_on;

	uint8_t *mmio_base;
	uint32_t mem_base; 
	int src_base;	// YUV buffer position in video memory
	uint32_t ram_size;	// how much megabytes videoram we have
	uint32_t top_reserved;	// reserved space for console font (matroxfb + fastfont)

	int brightness;	// initial brightness
	int contrast;	// initial contrast

	struct pci_dev *pci_dev;

	mga_vid_config_t config; 
	int configured; // set to 1 when the card is configured over ioctl

	int colkey_saved;
	int colkey_on;
	unsigned char colkey_color[4];
	unsigned char colkey_mask[4];

	int irq; // = -1
	int next_frame; 
} mga_card_t;

#define MGA_MAX_CARDS 16
// this is used as init value for the parameter arrays
// it should have exactly MGA_MAX_CARDS elements
#define MGA_MAX_CARDS_INIT_ARRAY {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}
static unsigned int mga_cards_num=0;
static mga_card_t * mga_cards[MGA_MAX_CARDS] = MGA_MAX_CARDS_INIT_ARRAY;

// module parameters
static int major = DEFAULT_MGA_VID_MAJOR;
static int mga_ram_size[MGA_MAX_CARDS] = MGA_MAX_CARDS_INIT_ARRAY;
static int mga_brightness[MGA_MAX_CARDS] = MGA_MAX_CARDS_INIT_ARRAY;
static int mga_contrast[MGA_MAX_CARDS] = MGA_MAX_CARDS_INIT_ARRAY;
static int mga_top_reserved[MGA_MAX_CARDS] = MGA_MAX_CARDS_INIT_ARRAY;

MODULE_PARM(mga_ram_size, "1-" __MODULE_STRING(MGA_MAX_CARDS) "i");
MODULE_PARM(mga_top_reserved, "1-" __MODULE_STRING(MGA_MAX_CARDS) "i");
MODULE_PARM(mga_brightness, "1-" __MODULE_STRING(MGA_MAX_CARDS) "i");
MODULE_PARM(mga_contrast, "1-" __MODULE_STRING(MGA_MAX_CARDS) "i");
MODULE_PARM(major, "i");

#ifdef CRTC2
static void crtc2_frame_sel(mga_card_t * card, int frame)
{
switch(frame) {
case 0:	
	card->cregs.c2pl2startadd0=card->regs.besa1corg;
	card->cregs.c2pl3startadd0=card->regs.besa1c3org;
	card->cregs.c2startadd0=card->regs.besa1org;
	break;
case 1:
	card->cregs.c2pl2startadd0=card->regs.besa2corg;
	card->cregs.c2pl3startadd0=card->regs.besa2c3org;
	card->cregs.c2startadd0=card->regs.besa2org;
	break;
case 2:
	card->cregs.c2pl2startadd0=card->regs.besb1corg;
	card->cregs.c2pl3startadd0=card->regs.besb1c3org;
	card->cregs.c2startadd0=card->regs.besb1org;
	break;
case 3:
	card->cregs.c2pl2startadd0=card->regs.besb2corg;
	card->cregs.c2pl3startadd0=card->regs.besb2c3org;
	card->cregs.c2startadd0=card->regs.besb2org;
	break;
}
	writel(card->cregs.c2startadd0, card->mmio_base + C2STARTADD0);
	writel(card->cregs.c2pl2startadd0, card->mmio_base + C2PL2STARTADD0);