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mpv/drivers/mga_vid.c

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// YUY2 support (see config.format) added by A'rpi/ESP-team
// double buffering added by A'rpi/ESP-team
// 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
* <slicer@ionet.net>
*
* 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
/* 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 <linux/string.h>
#include <linux/errno.h>
#include <linux/malloc.h>
#include <linux/pci.h>
#include <linux/ioport.h>
#include <linux/init.h>
#include "mga_vid.h"
#ifdef CONFIG_MTRR
#include <asm/mtrr.h>
#endif
#include <asm/uaccess.h>
#include <asm/system.h>
#include <asm/io.h>
#define TRUE 1
#define FALSE 0
#define MGA_VID_MAJOR 178
//#define MGA_VIDMEM_SIZE mga_ram_size
#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
MODULE_AUTHOR("Aaron Holtzman <aholtzma@engr.uvic.ca>");
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;
} bes_registers_t;
static bes_registers_t regs;
static uint32_t mga_vid_in_use = 0;
static uint32_t is_g400 = 0;
static uint32_t vid_src_ready = 0;
static uint32_t vid_overlay_on = 0;
static uint8_t *mga_mmio_base = 0;
static uint32_t mga_mem_base = 0;
static int mga_src_base = 0; // YUV buffer position in video memory
static uint32_t mga_ram_size = 0; // how much megabytes videoram we have
//static int mga_force_memsize = 0;
MODULE_PARM(mga_ram_size, "i");
static struct pci_dev *pci_dev;
static mga_vid_config_t mga_config;
static int mga_irq = -1;
//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
// 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
static int mga_next_frame=0;
static void mga_vid_frame_sel(int frame)
{
if ( mga_irq != -1 ) {
mga_next_frame=frame;
} else {
//we don't need the vcount protection as we're only hitting
//one register (and it doesn't seem to be double buffered)
regs.besctl = (regs.besctl & ~0x07000000) + (frame << 25);
writel( regs.besctl, mga_mmio_base + BESCTL );
// writel( regs.besglobctl + ((readl(mga_mmio_base + VCOUNT)+2)<<16),
writel( regs.besglobctl + (MGA_VSYNC_POS<<16),
mga_mmio_base + BESGLOBCTL);
}
}
static void mga_vid_write_regs(void)
{
//Make sure internal registers don't get updated until we're done
writel( (readl(mga_mmio_base + VCOUNT)-1)<<16,
mga_mmio_base + BESGLOBCTL);
// color or coordinate keying
writeb( XKEYOPMODE, mga_mmio_base + PALWTADD);
writeb( mga_config.colkey_on, mga_mmio_base + X_DATAREG);
if ( mga_config.colkey_on )
{
uint32_t r=0, g=0, b=0;
writeb( XMULCTRL, mga_mmio_base + PALWTADD);
switch (readb (mga_mmio_base + X_DATAREG))
{
case BPP_8:
/* Need to look up the color index, just using
color 0 for now. */
break;
case BPP_15:
r = mga_config.colkey_red >> 3;
g = mga_config.colkey_green >> 3;
b = mga_config.colkey_blue >> 3;
break;
case BPP_16:
r = mga_config.colkey_red >> 3;
g = mga_config.colkey_green >> 2;
b = mga_config.colkey_blue >> 3;
break;
case BPP_24:
case BPP_32_DIR:
case BPP_32_PAL:
r = mga_config.colkey_red;
g = mga_config.colkey_green;
b = mga_config.colkey_blue;
break;
}
// Disable color keying on alpha channel
writeb( XCOLMSK, mga_mmio_base + PALWTADD);
writeb( 0x00, mga_mmio_base + X_DATAREG);
writeb( X_COLKEY, mga_mmio_base + PALWTADD);
writeb( 0x00, mga_mmio_base + X_DATAREG);
// Set up color key registers
writeb( XCOLKEY0RED, mga_mmio_base + PALWTADD);
writeb( r, mga_mmio_base + X_DATAREG);
writeb( XCOLKEY0GREEN, mga_mmio_base + PALWTADD);
writeb( g, mga_mmio_base + X_DATAREG);
writeb( XCOLKEY0BLUE, mga_mmio_base + PALWTADD);
writeb( b, mga_mmio_base + X_DATAREG);
// Set up color key mask registers
writeb( XCOLMSK0RED, mga_mmio_base + PALWTADD);
writeb( 0xff, mga_mmio_base + X_DATAREG);
writeb( XCOLMSK0GREEN, mga_mmio_base + PALWTADD);
writeb( 0xff, mga_mmio_base + X_DATAREG);
writeb( XCOLMSK0BLUE, mga_mmio_base + PALWTADD);
writeb( 0xff, mga_mmio_base + X_DATAREG);
}
// Backend Scaler
writel( regs.besctl, mga_mmio_base + BESCTL);
if(is_g400)
writel( regs.beslumactl, mga_mmio_base + BESLUMACTL);
writel( regs.bespitch, mga_mmio_base + BESPITCH);
writel( regs.besa1org, mga_mmio_base + BESA1ORG);
writel( regs.besa1corg, mga_mmio_base + BESA1CORG);
writel( regs.besa2org, mga_mmio_base + BESA2ORG);
writel( regs.besa2corg, mga_mmio_base + BESA2CORG);
writel( regs.besb1org, mga_mmio_base + BESB1ORG);
writel( regs.besb1corg, mga_mmio_base + BESB1CORG);
writel( regs.besb2org, mga_mmio_base + BESB2ORG);
writel( regs.besb2corg, mga_mmio_base + BESB2CORG);
if(is_g400)
{
writel( regs.besa1c3org, mga_mmio_base + BESA1C3ORG);
writel( regs.besa2c3org, mga_mmio_base + BESA2C3ORG);
writel( regs.besb1c3org, mga_mmio_base + BESB1C3ORG);
writel( regs.besb2c3org, mga_mmio_base + BESB2C3ORG);
}
writel( regs.beshcoord, mga_mmio_base + BESHCOORD);
writel( regs.beshiscal, mga_mmio_base + BESHISCAL);
writel( regs.beshsrcst, mga_mmio_base + BESHSRCST);
writel( regs.beshsrcend, mga_mmio_base + BESHSRCEND);
writel( regs.beshsrclst, mga_mmio_base + BESHSRCLST);
writel( regs.besvcoord, mga_mmio_base + BESVCOORD);
writel( regs.besviscal, mga_mmio_base + BESVISCAL);
writel( regs.besv1srclst, mga_mmio_base + BESV1SRCLST);
writel( regs.besv1wght, mga_mmio_base + BESV1WGHT);
writel( regs.besv2srclst, mga_mmio_base + BESV2SRCLST);
writel( regs.besv2wght, mga_mmio_base + BESV2WGHT);
//update the registers somewhere between 1 and 2 frames from now.
writel( regs.besglobctl + ((readl(mga_mmio_base + VCOUNT)+2)<<16),
mga_mmio_base + BESGLOBCTL);
#if 0
printk(KERN_DEBUG "mga_vid: wrote BES registers\n");
printk(KERN_DEBUG "mga_vid: BESCTL = 0x%08x\n",
readl(mga_mmio_base + BESCTL));
printk(KERN_DEBUG "mga_vid: BESGLOBCTL = 0x%08x\n",
readl(mga_mmio_base + BESGLOBCTL));
printk(KERN_DEBUG "mga_vid: BESSTATUS= 0x%08x\n",
readl(mga_mmio_base + BESSTATUS));
#endif
}
static int mga_vid_set_config(mga_vid_config_t *config)
{
int x, y, sw, sh, dw, dh;
int besleft, bestop, ifactor, ofsleft, ofstop, baseadrofs, weight, weights;
int frame_size=config->frame_size;
x = config->x_org;
y = config->y_org;
sw = config->src_width;
sh = config->src_height;
dw = config->dest_width;
dh = config->dest_height;
printk(KERN_DEBUG "mga_vid: Setting up a %dx%d+%d+%d video window (src %dx%d) format %X\n",
dw, dh, x, y, sw, sh, config->format);
//FIXME check that window is valid and inside desktop
//FIXME figure out a better way to allocate memory on card
//allocate 2 megs
//mga_src_base = mga_mem_base + (MGA_VIDMEM_SIZE-2) * 0x100000;
//mga_src_base = (MGA_VIDMEM_SIZE-3) * 0x100000;
//Setup the BES registers for a three plane 4:2:0 video source
regs.besglobctl = 0;
switch(config->format){
case MGA_VID_FORMAT_YV12:
case MGA_VID_FORMAT_I420:
case MGA_VID_FORMAT_IYUV:
regs.besctl = 1 // BES enabled
+ (0<<6) // even start polarity
+ (1<<10) // x filtering enabled
+ (1<<11) // y filtering enabled
+ (1<<16) // chroma upsampling
+ (1<<17) // 4:2:0 mode
+ (1<<18); // dither enabled
#if 0
if(is_g400)
{
//zoom disabled, zoom filter disabled, 420 3 plane format, proc amp
//disabled, rgb mode disabled
regs.besglobctl = (1<<5);
}
else
{
//zoom disabled, zoom filter disabled, Cb samples in 0246, Cr
//in 1357, BES register update on besvcnt
regs.besglobctl = 0;
}
#endif
break;
case MGA_VID_FORMAT_YUY2:
regs.besctl = 1 // BES enabled
+ (0<<6) // even start polarity
+ (1<<10) // x filtering enabled
+ (1<<11) // y filtering enabled
+ (1<<16) // chroma upsampling
+ (0<<17) // 4:2:2 mode
+ (1<<18); // dither enabled
regs.besglobctl = 0; // YUY2 format selected
break;
case MGA_VID_FORMAT_UYVY:
regs.besctl = 1 // BES enabled
+ (0<<6) // even start polarity
+ (1<<10) // x filtering enabled
+ (1<<11) // y filtering enabled
+ (1<<16) // chroma upsampling
+ (0<<17) // 4:2:2 mode
+ (1<<18); // dither enabled
regs.besglobctl = 1<<6; // UYVY format selected
break;
default:
printk(KERN_ERR "mga_vid: Unsupported pixel format: 0x%X\n",config->format);
return -1;
}
//Disable contrast and brightness control
regs.besglobctl |= (1<<5) + (1<<7);
regs.beslumactl = (0x7f << 16) + (0x80<<0);
regs.beslumactl = 0x80<<0;
//Setup destination window boundaries
besleft = x > 0 ? x : 0;
bestop = y > 0 ? y : 0;
regs.beshcoord = (besleft<<16) + (x + dw-1);
regs.besvcoord = (bestop<<16) + (y + dh-1);
//Setup source dimensions
regs.beshsrclst = (sw - 1) << 16;
regs.bespitch = (sw + 31) & ~31 ;
//Setup horizontal scaling
ifactor = ((sw-1)<<14)/(dw-1);
ofsleft = besleft - x;
regs.beshiscal = ifactor<<2;
regs.beshsrcst = (ofsleft*ifactor)<<2;
regs.beshsrcend = regs.beshsrcst + (((dw - ofsleft - 1) * ifactor) << 2);
//Setup vertical scaling
ifactor = ((sh-1)<<14)/(dh-1);
ofstop = bestop - y;
regs.besviscal = ifactor<<2;
baseadrofs = ((ofstop*regs.besviscal)>>16)*regs.bespitch;
//frame_size = ((sw + 31) & ~31) * sh + (((sw + 31) & ~31) * sh) / 2;
regs.besa1org = (uint32_t) mga_src_base + baseadrofs;
regs.besa2org = (uint32_t) mga_src_base + baseadrofs + 1*frame_size;
regs.besb1org = (uint32_t) mga_src_base + baseadrofs + 2*frame_size;
regs.besb2org = (uint32_t) mga_src_base + baseadrofs + 3*frame_size;
if(config->format==MGA_VID_FORMAT_YV12
||config->format==MGA_VID_FORMAT_IYUV
||config->format==MGA_VID_FORMAT_I420
){
// planar YUV frames:
if (is_g400)
baseadrofs = (((ofstop*regs.besviscal)/4)>>16)*regs.bespitch;
else
baseadrofs = (((ofstop*regs.besviscal)/2)>>16)*regs.bespitch;
if(config->format==MGA_VID_FORMAT_YV12){
regs.besa1corg = (uint32_t) mga_src_base + baseadrofs + regs.bespitch * sh ;
regs.besa2corg = (uint32_t) mga_src_base + baseadrofs + 1*frame_size + regs.bespitch * sh;
regs.besb1corg = (uint32_t) mga_src_base + baseadrofs + 2*frame_size + regs.bespitch * sh;
regs.besb2corg = (uint32_t) mga_src_base + baseadrofs + 3*frame_size + regs.bespitch * sh;
regs.besa1c3org = regs.besa1corg + ((regs.bespitch * sh) / 4);
regs.besa2c3org = regs.besa2corg + ((regs.bespitch * sh) / 4);
regs.besb1c3org = regs.besb1corg + ((regs.bespitch * sh) / 4);
regs.besb2c3org = regs.besb2corg + ((regs.bespitch * sh) / 4);
} else {
regs.besa1c3org = (uint32_t) mga_src_base + baseadrofs + regs.bespitch * sh ;
regs.besa2c3org = (uint32_t) mga_src_base + baseadrofs + 1*frame_size + regs.bespitch * sh;
regs.besb1c3org = (uint32_t) mga_src_base + baseadrofs + 2*frame_size + regs.bespitch * sh;
regs.besb2c3org = (uint32_t) mga_src_base + baseadrofs + 3*frame_size + regs.bespitch * sh;
regs.besa1corg = regs.besa1c3org + ((regs.bespitch * sh) / 4);
regs.besa2corg = regs.besa2c3org + ((regs.bespitch * sh) / 4);
regs.besb1corg = regs.besb1c3org + ((regs.bespitch * sh) / 4);
regs.besb2corg = regs.besb2c3org + ((regs.bespitch * sh) / 4);
}
}
weight = ofstop * (regs.besviscal >> 2);
weights = weight < 0 ? 1 : 0;
regs.besv2wght = regs.besv1wght = (weights << 16) + ((weight & 0x3FFF) << 2);
regs.besv2srclst = regs.besv1srclst = sh - 1 - (((ofstop * regs.besviscal) >> 16) & 0x03FF);
mga_vid_write_regs();
return 0;
}
#ifdef MGA_ALLOW_IRQ
static void enable_irq(){
long int cc;
cc = readl(mga_mmio_base + IEN);
// printk(KERN_ALERT "*** !!! IRQREG = %d\n", (int)(cc&0xff));
writeb( 0x11, mga_mmio_base + CRTCX);
writeb(0x20, mga_mmio_base + CRTCD ); /* clear 0, enable off */
writeb(0x00, mga_mmio_base + CRTCD ); /* enable on */
writeb(0x10, mga_mmio_base + CRTCD ); /* clear = 1 */
writel( regs.besglobctl , mga_mmio_base + BESGLOBCTL);
}
static void disable_irq(){
writeb( 0x11, mga_mmio_base + CRTCX);
writeb(0x20, mga_mmio_base + CRTCD ); /* clear 0, enable off */
}
void mga_handle_irq(int irq, void *dev_id, struct pt_regs *pregs) {
// static int frame=0;
static int counter=0;
long int cc;
// if ( ! mga_enabled_flag ) return;
// printk(KERN_DEBUG "vcount = %d\n",readl(mga_mmio_base + VCOUNT));
//printk("mga_interrupt #%d\n", irq);
if ( irq != -1 ) {
cc = readl(mga_mmio_base + STATUS);
if ( ! (cc & 0x10) ) return; /* vsyncpen */
// debug_irqcnt++;
}
// if ( debug_irqignore ) {
// debug_irqignore = 0;
/*
if ( mga_conf_deinterlace ) {
if ( mga_first_field ) {
// printk("mga_interrupt first field\n");
if ( syncfb_interrupt() )
mga_first_field = 0;
} else {
// printk("mga_interrupt second field\n");
mga_select_buffer( mga_current_field | 2 );
mga_first_field = 1;
}
} else {
syncfb_interrupt();
}
*/
// frame=(frame+1)&1;
regs.besctl = (regs.besctl & ~0x07000000) + (mga_next_frame << 25);
writel( regs.besctl, mga_mmio_base + BESCTL );
#if 0
++counter;
if(!(counter&63)){
printk("mga irq counter = %d\n",counter);
}
#endif
// } else {
// debug_irqignore = 1;
// }
if ( irq != -1 ) {
writeb( 0x11, mga_mmio_base + CRTCX);
writeb( 0, mga_mmio_base + CRTCD );
writeb( 0x10, mga_mmio_base + CRTCD );
}
// writel( regs.besglobctl, mga_mmio_base + BESGLOBCTL);
return;
}
#endif
static int mga_vid_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
{
int frame;
switch(cmd)
{
case MGA_VID_CONFIG:
//FIXME remove
// printk(KERN_DEBUG "vcount = %d\n",readl(mga_mmio_base + VCOUNT));
printk(KERN_DEBUG "mga_mmio_base = %p\n",mga_mmio_base);
printk(KERN_DEBUG "mga_mem_base = %08lx\n",mga_mem_base);
//FIXME remove
printk(KERN_DEBUG "mga_vid: Received configuration\n");
if(copy_from_user(&mga_config,(mga_vid_config_t*) arg,sizeof(mga_vid_config_t)))
{
printk(KERN_ERR "mga_vid: failed copy from userspace\n");
return(-EFAULT);
}
if(mga_config.version != MGA_VID_VERSION){
printk(KERN_ERR "mga_vid: incompatible version! driver: %X requested: %X\n",MGA_VID_VERSION,mga_config.version);
return(-EFAULT);
}
if(mga_config.frame_size==0 || mga_config.frame_size>1024*768*2){
printk(KERN_ERR "mga_vid: illegal frame_size: %d\n",mga_config.frame_size);
return(-EFAULT);
}
if(mga_config.num_frames<1 || mga_config.num_frames>4){
printk(KERN_ERR "mga_vid: illegal num_frames: %d\n",mga_config.num_frames);
return(-EFAULT);
}
mga_src_base = (mga_ram_size*0x100000-mga_config.num_frames*mga_config.frame_size);
if(mga_src_base<0){
printk(KERN_ERR "mga_vid: not enough memory for frames!\n");
return(-EFAULT);
}
mga_src_base &= (~0xFFFF); // 64k boundary
printk(KERN_DEBUG "mga YUV buffer base: 0x%X\n", mga_src_base);
if (is_g400)
mga_config.card_type = MGA_G400;
else
mga_config.card_type = MGA_G200;
mga_config.ram_size = mga_ram_size;
if (copy_to_user((mga_vid_config_t *) arg, &mga_config, sizeof(mga_vid_config_t)))
{
printk(KERN_ERR "mga_vid: failed copy to userspace\n");
return(-EFAULT);
}
return mga_vid_set_config(&mga_config);
break;
case MGA_VID_ON:
printk(KERN_DEBUG "mga_vid: Video ON\n");
vid_src_ready = 1;
if(vid_overlay_on)
{
regs.besctl |= 1;
mga_vid_write_regs();
}
#ifdef MGA_ALLOW_IRQ
if ( mga_irq != -1 ) enable_irq();
#endif
mga_next_frame=0;
break;
case MGA_VID_OFF:
printk(KERN_DEBUG "mga_vid: Video OFF (ioctl)\n");
vid_src_ready = 0;
#ifdef MGA_ALLOW_IRQ
if ( mga_irq != -1 ) disable_irq();
#endif
regs.besctl &= ~1;
regs.besglobctl &= ~(1<<6); // UYVY format selected
mga_vid_write_regs();
break;
case MGA_VID_FSEL:
if(copy_from_user(&frame,(int *) arg,sizeof(int)))
{
printk(KERN_ERR "mga_vid: FSEL failed copy from userspace\n");
return(-EFAULT);
}
mga_vid_frame_sel(frame);
break;
default:
printk(KERN_ERR "mga_vid: Invalid ioctl\n");
return (-EINVAL);
}
return 0;
}
static int mga_vid_find_card(void)
{
struct pci_dev *dev = NULL;
unsigned int card_option, temp;
if((dev = pci_find_device(PCI_VENDOR_ID_MATROX, PCI_DEVICE_ID_MATROX_G400, NULL)))
{
is_g400 = 1;
printk(KERN_INFO "mga_vid: Found MGA G400/G450\n");
}
else if((dev = pci_find_device(PCI_VENDOR_ID_MATROX, PCI_DEVICE_ID_MATROX_G200_AGP, NULL)))
{
is_g400 = 0;
printk(KERN_INFO "mga_vid: Found MGA G200 AGP\n");
}
else if((dev = pci_find_device(PCI_VENDOR_ID_MATROX, PCI_DEVICE_ID_MATROX_G200_PCI, NULL)))
{
is_g400 = 0;
printk(KERN_INFO "mga_vid: Found MGA G200 PCI\n");
}
else
{
printk(KERN_ERR "mga_vid: No supported cards found\n");
return FALSE;
}
pci_dev = dev;
mga_irq = pci_dev->irq;
#if LINUX_VERSION_CODE >= 0x020300
mga_mmio_base = ioremap_nocache(dev->resource[1].start,0x4000);
mga_mem_base = dev->resource[0].start;
#else
mga_mmio_base = ioremap_nocache(dev->base_address[1] & PCI_BASE_ADDRESS_MEM_MASK,0x4000);
mga_mem_base = dev->base_address[0] & PCI_BASE_ADDRESS_MEM_MASK;
#endif
printk(KERN_INFO "mga_vid: MMIO at 0x%p IRQ: %d framebuffer: 0x%08lX\n", mga_mmio_base, mga_irq, mga_mem_base);
pci_read_config_dword(dev, 0x40, &card_option);
printk(KERN_INFO "mga_vid: OPTION word: 0x%08X mem: 0x%02X %s\n", card_option,
(card_option>>10)&0x17, ((card_option>>14)&1)?"SGRAM":"SDRAM");
// temp = (card_option >> 10) & 0x17;
if (mga_ram_size) {
printk(KERN_INFO "mga_vid: RAMSIZE forced to %d MB\n", mga_ram_size);
} else {
#ifdef MGA_MEMORY_SIZE
mga_ram_size = MGA_MEMORY_SIZE;
printk(KERN_INFO "mga_vid: hard-coded RAMSIZE is %d MB\n", (unsigned int) mga_ram_size);
#else
if (is_g400){
switch((card_option>>10)&0x17){
// SDRAM:
case 0x00:
case 0x04: mga_ram_size = 16; break;
case 0x03: mga_ram_size = 32; break;
// SGRAM:
case 0x10:
case 0x14: mga_ram_size = 32; break;
case 0x11:
case 0x12: mga_ram_size = 16; break;
default:
mga_ram_size = 16;
printk(KERN_INFO "mga_vid: Couldn't detect RAMSIZE, assuming 16MB!");
}
}else{
switch((card_option>>11)&1){
case 0:
case 3: mga_ram_size = 8; break;
default: mga_ram_size = 16;
}
}
#if 0
// printk("List resources -----------\n");
for(temp=0;temp<DEVICE_COUNT_RESOURCE;temp++){
struct resource *res=&pci_dev->resource[temp];
if(res->flags){
int size=(1+res->end-res->start)>>20;
printk(KERN_DEBUG "res %d: start: 0x%X end: 0x%X (%d MB) flags=0x%X\n",temp,res->start,res->end,size,res->flags);
if(res->flags&(IORESOURCE_MEM|IORESOURCE_PREFETCH)){
if(size>mga_ram_size && size<=64) mga_ram_size=size;
}
}
}
#endif
printk(KERN_INFO "mga_vid: detected RAMSIZE is %d MB\n", (unsigned int) mga_ram_size);
#endif
}
#ifdef MGA_ALLOW_IRQ
if ( mga_irq != -1 ) {
int tmp = request_irq(mga_irq, mga_handle_irq, SA_INTERRUPT | SA_SHIRQ, "Syncfb Time Base", &mga_irq);
if ( tmp ) {
printk(KERN_INFO "syncfb (mga): cannot register irq %d (Err: %d)\n", mga_irq, tmp);
mga_irq=-1;
} else {
printk(KERN_DEBUG "syncfb (mga): registered irq %d\n", mga_irq);
}
} else {
printk(KERN_INFO "syncfb (mga): No valid irq was found\n");
mga_irq=-1;
}
#else
printk(KERN_INFO "syncfb (mga): IRQ disabled in mga_vid.c\n");
mga_irq=-1;
#endif
return TRUE;
}
static ssize_t mga_vid_read(struct file *file, char *buf, size_t count, loff_t *ppos)
{
return -EINVAL;
}
static ssize_t mga_vid_write(struct file *file, const char *buf, size_t count, loff_t *ppos)
{
return -EINVAL;
}
static int mga_vid_mmap(struct file *file, struct vm_area_struct *vma)
{
printk(KERN_DEBUG "mga_vid: mapping video memory into userspace\n");
if(remap_page_range(vma->vm_start, mga_mem_base + mga_src_base,
vma->vm_end - vma->vm_start, vma->vm_page_prot))
{
printk(KERN_ERR "mga_vid: error mapping video memory\n");
return(-EAGAIN);
}
return(0);
}
static int mga_vid_release(struct inode *inode, struct file *file)
{
//Close the window just in case
printk(KERN_DEBUG "mga_vid: Video OFF (release)\n");
vid_src_ready = 0;
regs.besctl &= ~1;
regs.besglobctl &= ~(1<<6); // UYVY format selected
mga_vid_write_regs();
mga_vid_in_use = 0;
MOD_DEC_USE_COUNT;
return 0;
}
static long long mga_vid_lseek(struct file *file, long long offset, int origin)
{
return -ESPIPE;
}
static int mga_vid_open(struct inode *inode, struct file *file)
{
int minor = MINOR(inode->i_rdev);
if(minor != 0)
return(-ENXIO);
if(mga_vid_in_use == 1)
return(-EBUSY);
mga_vid_in_use = 1;
MOD_INC_USE_COUNT;
return(0);
}
#if LINUX_VERSION_CODE >= 0x020400
static struct file_operations mga_vid_fops =
{
llseek: mga_vid_lseek,
read: mga_vid_read,
write: mga_vid_write,
ioctl: mga_vid_ioctl,
mmap: mga_vid_mmap,
open: mga_vid_open,
release: mga_vid_release
};
#else
static struct file_operations mga_vid_fops =
{
mga_vid_lseek,
mga_vid_read,
mga_vid_write,
NULL,
NULL,
mga_vid_ioctl,
mga_vid_mmap,
mga_vid_open,
NULL,
mga_vid_release
};
#endif
/*
* Main Initialization Function
*/
static int mga_vid_initialize(void)
{
mga_vid_in_use = 0;
// printk(KERN_INFO "Matrox MGA G200/G400 YUV Video interface v0.01 (c) Aaron Holtzman \n");
printk(KERN_INFO "Matrox MGA G200/G400/G450 YUV Video interface v2.01 (c) Aaron Holtzman & A'rpi\n");
if (mga_ram_size) {
if (mga_ram_size<4 || mga_ram_size>64) {
printk(KERN_ERR "mga_vid: invalid RAMSIZE: %d MB\n", mga_ram_size);
return -EINVAL;
}
}
if(register_chrdev(MGA_VID_MAJOR, "mga_vid", &mga_vid_fops))
{
printk(KERN_ERR "mga_vid: unable to get major: %d\n", MGA_VID_MAJOR);
return -EIO;
}
if (!mga_vid_find_card())
{
printk(KERN_ERR "mga_vid: no supported devices found\n");
unregister_chrdev(MGA_VID_MAJOR, "mga_vid");
return -EINVAL;
}
return(0);
}
int init_module(void)
{
return mga_vid_initialize();
}
void cleanup_module(void)
{
#ifdef MGA_ALLOW_IRQ
if ( mga_irq != -1)
free_irq(mga_irq, &mga_irq);
#endif
if(mga_mmio_base)
iounmap(mga_mmio_base);
//FIXME turn off BES
printk(KERN_INFO "mga_vid: Cleaning up module\n");
unregister_chrdev(MGA_VID_MAJOR, "mga_vid");
}
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