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mpv/drivers/sis_vid.c
szabi 8188f8359c use <linux/slab.h> instead of <linux/malloc.h> for kernels 2.4.9+
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@3126 b3059339-0415-0410-9bf9-f77b7e298cf2
2001-11-25 23:34:37 +00:00

652 lines
14 KiB
C

/*
*
* sis_vid.c
*
* Copyright (C) 2000 Aaron Holtzman
*
* This software has been released under the terms of the GNU Public
* license. See http://www.gnu.org/copyleft/gpl.html for details.
*/
// video4linux interface disabled by A'rpi/ESP-team
//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>
#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/init.h>
//#include <linux/videodev.h>
#include "sis_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
#ifndef PCI_DEVICE_ID_SI_6323
#define PCI_DEVICE_ID_SI_6323 0x6326
#endif
MODULE_AUTHOR("Aaron Holtzman <aholtzma@engr.uvic.ca>");
typedef struct bes_registers_s
{
//base address of yuv framebuffer
uint32_t yuv_base;
uint32_t u_base;
uint32_t v_base;
uint32_t fb_end;;
//frame buffer pitch
uint32_t pitch;
//window boundaries
uint32_t left;
uint32_t right;
uint32_t top;
uint32_t bottom;
//control registers
uint32_t misc_0;
uint32_t misc_1;
uint32_t misc_3;
uint32_t misc_4;
//key overlay mode
uint32_t key_mode;
} bes_registers_t;
static bes_registers_t regs;
static uint32_t mga_vid_in_use = 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 uint32_t mga_src_base = 0;
static uint32_t mga_ram_size = 0;
static struct pci_dev *pci_dev;
//static struct video_window mga_win;
static mga_vid_config_t mga_config;
// Backend Scaler registers
#define MISC_0 0x98
#define MISC_1 0x99
#define MISC_3 0x9d
#define MISC_4 0xb6
static void mga_vid_frame_sel(int frame)
{
//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 );
}
#define WRITE_REG(x,y,z) {outb((y),(x));outb((z),(x+1));}
#define READ_REG(x,y) (outb((y),(x)),inb(x+1))
#define VIDEO_ACCEL 0x3d4
static void mga_vid_write_regs(void)
{
uint32_t foo;
//unlock the video accel registers
WRITE_REG(VIDEO_ACCEL,0x80,0x86);
foo = READ_REG(VIDEO_ACCEL,0x80);
if(foo != 0xa1)
return; //something bad happened
//setup the horizontal window bounds
WRITE_REG(VIDEO_ACCEL,0x81,regs.left & 0xff);
WRITE_REG(VIDEO_ACCEL,0x82,regs.right & 0xff);
WRITE_REG(VIDEO_ACCEL,0x83,(regs.left >> 8) | ((regs.right>>4) & 0x70));
//setup the vertical window bounds
WRITE_REG(VIDEO_ACCEL,0x84,regs.top & 0xff);
WRITE_REG(VIDEO_ACCEL,0x85,regs.bottom & 0xff);
WRITE_REG(VIDEO_ACCEL,0x86,(regs.top >> 8) | ((regs.bottom>>4) & 0x70));
//setup the framebuffer base addresses
WRITE_REG(VIDEO_ACCEL,0x8a,regs.yuv_base & 0xff);
WRITE_REG(VIDEO_ACCEL,0x8b,(regs.yuv_base >> 8) & 0xff);
WRITE_REG(VIDEO_ACCEL,0x89,(regs.yuv_base >> 12) & 0xf0);
WRITE_REG(VIDEO_ACCEL,0xb7,regs.u_base & 0xff);
WRITE_REG(VIDEO_ACCEL,0xb8,(regs.u_base >> 8) & 0xff);
WRITE_REG(VIDEO_ACCEL,0xba,regs.v_base & 0xff);
WRITE_REG(VIDEO_ACCEL,0xbb,(regs.v_base >> 8) & 0xff);
WRITE_REG(VIDEO_ACCEL,0xb9,((regs.v_base >> 12) & 0xf0) + ((regs.u_base >> 16) & 0xf));
WRITE_REG(VIDEO_ACCEL,0x8d,regs.fb_end);
//setup framebuffer pitch
WRITE_REG(VIDEO_ACCEL,0x8c,regs.pitch & 0xff);
WRITE_REG(VIDEO_ACCEL,0x8e,(regs.pitch >> 8) & 0x0f);
WRITE_REG(VIDEO_ACCEL,0xbc,(regs.pitch) & 0xff);
WRITE_REG(VIDEO_ACCEL,0xbd,((regs.pitch) >> 8) & 0x0f);
//write key overlay register
WRITE_REG(VIDEO_ACCEL,0xa9,regs.key_mode);
WRITE_REG(VIDEO_ACCEL,0x93,0x40);
WRITE_REG(VIDEO_ACCEL,0x94,1);
WRITE_REG(VIDEO_ACCEL,0x9e,0);
WRITE_REG(VIDEO_ACCEL,0x9f,0);
//write config registers
WRITE_REG(VIDEO_ACCEL,MISC_0,regs.misc_0);
WRITE_REG(VIDEO_ACCEL,MISC_1,regs.misc_1);
WRITE_REG(VIDEO_ACCEL,MISC_3,regs.misc_3);
WRITE_REG(VIDEO_ACCEL,MISC_4,regs.misc_4);
//setup the video line buffer
WRITE_REG(VIDEO_ACCEL,0xa0,(regs.right - regs.left)/ 8);
}
static int mga_vid_set_config(mga_vid_config_t *config)
{
uint32_t x, y, frame_size;
x = config->x_org;
y = config->y_org;
regs.left = x;
regs.right= config->src_width + x;
regs.top = y;
regs.bottom = config->src_height + y;
printk(KERN_DEBUG "mga_vid: Setting up a %dx%d+%d+%d video window (src %dx%d)\n",
config->dest_width, config->dest_height, config->x_org, config->y_org,
config->src_width, config->src_height);
regs.pitch = ((config->src_width + 31) & ~31) / 4 ;
//frame size in pixels
frame_size = regs.pitch * config->src_height * 4;
regs.yuv_base = (mga_src_base) >> 2;
regs.u_base = (mga_src_base + frame_size) >> 2;
regs.v_base = (mga_src_base + frame_size/4) >> 2;
regs.fb_end = (mga_src_base + (3*frame_size)/2) >> 14;
//disable video capture, enable video display, enable graphics display,
//select yuv format, odd parity
regs.misc_0 = (1 << 1) + (1<<6) + (1<<4);
//disable dithering, no filtering, no interrupts
regs.misc_1 = 0;
//select 2's complement format YUV for playback
regs.misc_3 = (1<<1);
//select 4:2:0 video format, + yuv4:2:2 cpu writes
regs.misc_4 = (1<<2);
//disable keying
regs.key_mode = 0xf;
mga_vid_write_regs();
return 0;
}
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 "mga_mmio_base = %p\n",mga_mmio_base);
printk(KERN_DEBUG "mga_mem_base = %08x\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);
}
mga_config.ram_size = mga_ram_size;
//XXX make it look like a g400
mga_config.card_type = MGA_G400;;
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();
}
break;
case MGA_VID_OFF:
printk(KERN_DEBUG "mga_vid: Video OFF\n");
vid_src_ready = 0;
//regs.besctl &= ~1;
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;
if((dev = pci_find_device(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_6323, NULL)))
{
printk(KERN_DEBUG "sis_vid: Found SiS 6326\n");
}
else
{
printk(KERN_ERR "sis_vid: No supported cards found\n");
return FALSE;
}
pci_dev = dev;
#if LINUX_VERSION_CODE >= 0x020300
mga_mmio_base = ioremap_nocache(dev->resource[1].start,0x10000);
mga_mem_base = dev->resource[0].start;
#else
mga_mmio_base = ioremap_nocache(dev->base_address[1] & PCI_BASE_ADDRESS_MEM_MASK,0x10000);
mga_mem_base = dev->base_address[0] & PCI_BASE_ADDRESS_MEM_MASK;
#endif
printk(KERN_DEBUG "mga_vid: MMIO at 0x%p\n", mga_mmio_base);
printk(KERN_DEBUG "mga_vid: Frame Buffer at 0x%08x\n", mga_mem_base);
//FIXME set ram size properly
mga_ram_size = 4;
mga_src_base = (mga_ram_size - 1) * 0x100000;
//FIXME remove
if(1)
{
mga_vid_config_t config ={0,0,256,256,256,256,10,10,0,0,0,0};
mga_vid_set_config(&config);
mga_vid_write_regs();
//regs.misc_0 ^= 2;
//mga_vid_write_regs();
}
//FIXME remove
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
vid_src_ready = 0;
regs.misc_0 &= 0xed;
mga_vid_write_regs();
mga_vid_in_use = 0;
//FIXME put back in!
//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;
//FIXME turn me back on!
//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
#if 0
static long mga_v4l_read(struct video_device *v, char *buf, unsigned long count,
int noblock)
{
return -EINVAL;
}
static long mga_v4l_write(struct video_device *v, const char *buf, unsigned long count, int noblock)
{
return -EINVAL;
}
static int mga_v4l_open(struct video_device *dev, int mode)
{
MOD_INC_USE_COUNT;
return 0;
}
static void mga_v4l_close(struct video_device *dev)
{
//regs.besctl &= ~1;
mga_vid_write_regs();
vid_overlay_on = 0;
MOD_DEC_USE_COUNT;
return;
}
static int mga_v4l_init_done(struct video_device *dev)
{
return 0;
}
static int mga_v4l_ioctl(struct video_device *dev, unsigned int cmd, void *arg)
{
switch(cmd)
{
case VIDIOCGCAP:
{
struct video_capability b;
strcpy(b.name, "Matrox G200/400");
b.type = VID_TYPE_SCALES|VID_TYPE_OVERLAY|VID_TYPE_CHROMAKEY;
b.channels = 0;
b.audios = 0;
b.maxwidth = 1024; /* GUESS ?? */
b.maxheight = 768;
b.minwidth = 32;
b.minheight = 16; /* GUESS ?? */
if(copy_to_user(arg,&b,sizeof(b)))
return -EFAULT;
return 0;
}
case VIDIOCGPICT:
{
/*
* Default values.. if we can change this we
* can add the feature later
*/
struct video_picture vp;
vp.brightness = 0x8000;
vp.hue = 0x8000;
vp.colour = 0x8000;
vp.whiteness = 0x8000;
vp.depth = 8;
/* Format is a guess */
vp.palette = VIDEO_PALETTE_YUV420P;
if(copy_to_user(arg, &vp, sizeof(vp)))
return -EFAULT;
return 0;
}
case VIDIOCSPICT:
{
return -EINVAL;
}
case VIDIOCSWIN:
{
struct video_window vw;
if(copy_from_user(&vw, arg, sizeof(vw)))
return -EFAULT;
if(vw.x <0 || vw.y <0 || vw.width < 32
|| vw.height < 16)
return -EINVAL;
memcpy(&mga_win, &vw, sizeof(mga_win));
mga_config.x_org = vw.x;
mga_config.y_org = vw.y;
mga_config.dest_width = vw.width;
mga_config.dest_height = vw.height;
/*
* May have to add
*
* #define VIDEO_WINDOW_CHROMAKEY 16
*
* to <linux/videodev.h>
*/
//add it here for now
#define VIDEO_WINDOW_CHROMAKEY 16
if (vw.flags & VIDEO_WINDOW_CHROMAKEY)
mga_config.colkey_on = 1;
else
mga_config.colkey_on = 0;
mga_config.colkey_red = (vw.chromakey >> 24) & 0xFF;
mga_config.colkey_green = (vw.chromakey >> 16) & 0xFF;
mga_config.colkey_blue = (vw.chromakey >> 8) & 0xFF;
mga_vid_set_config(&mga_config);
return 0;
}
case VIDIOCGWIN:
{
if(copy_to_user(arg, &mga_win, sizeof(mga_win)))
return -EFAULT;
return 0;
}
case VIDIOCCAPTURE:
{
int v;
if(copy_from_user(&v, arg, sizeof(v)))
return -EFAULT;
vid_overlay_on = v;
if(vid_overlay_on && vid_src_ready)
{
//regs.besctl |= 1;
mga_vid_write_regs();
}
else
{
//regs.besctl &= ~1;
mga_vid_write_regs();
}
return 0;
}
default:
return -ENOIOCTLCMD;
}
}
static struct video_device mga_v4l_dev =
{
"Matrox G200/G400",
VID_TYPE_CAPTURE,
VID_HARDWARE_BT848, /* This is a lie for now */
mga_v4l_open,
mga_v4l_close,
mga_v4l_read,
mga_v4l_write,
NULL,
mga_v4l_ioctl,
NULL,
mga_v4l_init_done,
NULL,
0,
0
};
#endif
/*
* Main Initialization Function
*/
static int mga_vid_initialize(void)
{
mga_vid_in_use = 0;
printk(KERN_DEBUG "SiS 6326 YUV Video interface v0.01 (c) Aaron Holtzman \n");
if(register_chrdev(MGA_VID_MAJOR, "mga_vid", &mga_vid_fops))
{
printk(KERN_ERR "sis_vid: unable to get major: %d\n", MGA_VID_MAJOR);
return -EIO;
}
if (!mga_vid_find_card())
{
printk(KERN_ERR "sis_vid: no supported devices found\n");
unregister_chrdev(MGA_VID_MAJOR, "mga_vid");
return -EINVAL;
}
#if 0
if (video_register_device(&mga_v4l_dev, VFL_TYPE_GRABBER)<0)
{
printk("sis_vid: unable to register.\n");
unregister_chrdev(MGA_VID_MAJOR, "mga_vid");
if(mga_mmio_base)
iounmap(mga_mmio_base);
mga_mmio_base = 0;
return -EINVAL;
}
#endif
return(0);
}
int init_module(void)
{
return mga_vid_initialize();
}
void cleanup_module(void)
{
// video_unregister_device(&mga_v4l_dev);
if(mga_mmio_base)
iounmap(mga_mmio_base);
//FIXME turn off BES
printk(KERN_DEBUG "mga_vid: Cleaning up module\n");
unregister_chrdev(MGA_VID_MAJOR, "mga_vid");
}