diff options
Diffstat (limited to 'drivers/sis_vid.c')
| -rw-r--r-- | drivers/sis_vid.c | 645 |
1 files changed, 645 insertions, 0 deletions
diff --git a/drivers/sis_vid.c b/drivers/sis_vid.c new file mode 100644 index 0000000000..5b9eace81a --- /dev/null +++ b/drivers/sis_vid.c @@ -0,0 +1,645 @@ +/* + * + * 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> +#include <linux/malloc.h> +#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("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("mga_mmio_base = %p\n",mga_mmio_base); + printk("mga_mem_base = %08x\n",mga_mem_base); + //FIXME remove + + printk("mga_vid: Received configuration\n"); + + if(copy_from_user(&mga_config,(mga_vid_config_t*) arg,sizeof(mga_vid_config_t))) + { + printk("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("mga_vid: failed copy to userspace\n"); + return(-EFAULT); + } + return mga_vid_set_config(&mga_config); + break; + + case MGA_VID_ON: + printk("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("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("mga_vid: FSEL failed copy from userspace\n"); + return(-EFAULT); + } + + mga_vid_frame_sel(frame); + break; + + default: + printk("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("sis_vid: Found SiS 6326\n"); + } + else + { + printk("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("mga_vid: MMIO at 0x%p\n", mga_mmio_base); + printk("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("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("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( "SiS 6326 YUV Video interface v0.01 (c) Aaron Holtzman \n"); + if(register_chrdev(MGA_VID_MAJOR, "mga_vid", &mga_vid_fops)) + { + printk("sis_vid: unable to get major: %d\n", MGA_VID_MAJOR); + return -EIO; + } + + if (!mga_vid_find_card()) + { + printk("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("mga_vid: Cleaning up module\n"); + unregister_chrdev(MGA_VID_MAJOR, "mga_vid"); +} + |