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mpv/drivers/tdfx_vid.c

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#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/ioport.h>
#include <linux/init.h>
#include <linux/agp_backend.h>
#include <asm/uaccess.h>
#include <asm/system.h>
#include <asm/io.h>
#include "tdfx_vid.h"
#include "3dfx.h"
#define TDFX_VID_MAJOR 178
MODULE_AUTHOR("Albeu");
MODULE_DESCRIPTION("A driver for Banshee targeted for video app");
#ifdef MODULE_LICENSE
MODULE_LICENSE("GPL");
#endif
#ifndef min
#define min(x,y) (((x)<(y))?(x):(y))
#endif
static struct pci_dev *pci_dev;
static uint8_t *tdfx_mmio_base = 0;
static uint32_t tdfx_mem_base = 0;
static uint32_t tdfx_io_base = 0;
static int tdfx_ram_size = 0;
static int tdfx_vid_in_use = 0;
static drm_agp_t *drm_agp = NULL;
static agp_kern_info agp_info;
static agp_memory *agp_mem = NULL;
static __initdata int tdfx_map_io = 1;
static __initdata unsigned long map_start = 0; //0x7300000;
static __initdata unsigned long map_max = (10*1024*1024);
static unsigned long map_base = 0;
MODULE_PARM(tdfx_map_io,"i");
MODULE_PARM_DESC(tdfx_map_io, "Set to 0 to use the page fault handler (you need to patch agpgart_be.c to allow the mapping in user space)\n");
MODULE_PARM(map_start,"l");
MODULE_PARM_DESC(map_start,"Use a block of physical mem instead of the agp arerture.");
MODULE_PARM(map_max,"l");
MODULE_PARM_DESC(map_max, "Maximum amout of physical memory (in bytes) that can be used\n");
static inline u32 tdfx_inl(unsigned int reg) {
return readl(tdfx_mmio_base + reg);
}
static inline void tdfx_outl(unsigned int reg, u32 val) {
writel(val,tdfx_mmio_base + reg);
}
static inline void banshee_make_room(int size) {
while((tdfx_inl(STATUS) & 0x1f) < size);
}
static inline void banshee_wait_idle(void) {
int i = 0;
banshee_make_room(1);
tdfx_outl(COMMAND_3D, COMMAND_3D_NOP);
while(1) {
i = (tdfx_inl(STATUS) & STATUS_BUSY) ? 0 : i + 1;
if(i == 3) break;
}
}
static unsigned long get_lfb_size(void) {
u32 draminit0 = 0;
u32 draminit1 = 0;
// u32 miscinit1 = 0;
u32 lfbsize = 0;
int sgram_p = 0;
draminit0 = tdfx_inl(DRAMINIT0);
draminit1 = tdfx_inl(DRAMINIT1);
if ((pci_dev->device == PCI_DEVICE_ID_3DFX_BANSHEE) ||
(pci_dev->device == PCI_DEVICE_ID_3DFX_VOODOO3)) {
sgram_p = (draminit1 & DRAMINIT1_MEM_SDRAM) ? 0 : 1;
lfbsize = sgram_p ?
(((draminit0 & DRAMINIT0_SGRAM_NUM) ? 2 : 1) *
((draminit0 & DRAMINIT0_SGRAM_TYPE) ? 8 : 4) * 1024 * 1024) :
16 * 1024 * 1024;
} else {
/* Voodoo4/5 */
u32 chips, psize, banks;
chips = ((draminit0 & (1 << 26)) == 0) ? 4 : 8;
psize = 1 << ((draminit0 & 0x38000000) >> 28);
banks = ((draminit0 & (1 << 30)) == 0) ? 2 : 4;
lfbsize = chips * psize * banks;
lfbsize <<= 20;
}
#if 0
/* disable block writes for SDRAM (why?) */
miscinit1 = tdfx_inl(MISCINIT1);
miscinit1 |= sgram_p ? 0 : MISCINIT1_2DBLOCK_DIS;
miscinit1 |= MISCINIT1_CLUT_INV;
banshee_make_room(1);
tdfx_outl(MISCINIT1, miscinit1);
#endif
return lfbsize;
}
static int tdfx_vid_find_card(void)
{
struct pci_dev *dev = NULL;
// unsigned int card_option;
if((dev = pci_find_device(PCI_VENDOR_ID_3DFX, PCI_DEVICE_ID_3DFX_BANSHEE, NULL)))
printk(KERN_INFO "tdfx_vid: Found VOODOO BANSHEE\n");
else if((dev = pci_find_device(PCI_VENDOR_ID_3DFX, PCI_DEVICE_ID_3DFX_VOODOO3, NULL)))
printk(KERN_INFO "tdfx_vid: Found VOODOO 3 \n");
else
return 0;
pci_dev = dev;
#if LINUX_VERSION_CODE >= 0x020300
tdfx_mmio_base = ioremap_nocache(dev->resource[0].start,1 << 24);
tdfx_mem_base = dev->resource[1].start;
tdfx_io_base = dev->resource[2].start;
#else
tdfx_mmio_base = ioremap_nocache(dev->base_address[1] & PCI_BASE_ADDRESS_MEM_MASK,0x4000);
tdfx_mem_base = dev->base_address[1] & PCI_BASE_ADDRESS_MEM_MASK;
tdfx_io_base = dev->base_address[2] & PCI_BASE_ADDRESS_MEM_MASK;
#endif
printk(KERN_INFO "tdfx_vid: MMIO at 0x%p\n", tdfx_mmio_base);
tdfx_ram_size = get_lfb_size();
printk(KERN_INFO "tdfx_vid: Found %d MB (%d bytes) of memory\n",
tdfx_ram_size / 1024 / 1024,tdfx_ram_size);
#if 0
{
int temp;
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>tdfx_ram_size && size<=64) tdfx_ram_size=size;
}
}
}
}
#endif
return 1;
}
static int agp_init(void) {
drm_agp = (drm_agp_t*)inter_module_get("drm_agp");
if(!drm_agp) {
printk(KERN_ERR "tdfx_vid: Unable to get drm_agp pointer\n");
return 0;
}
if(drm_agp->acquire()) {
printk(KERN_ERR "tdfx_vid: Unable to acquire the agp backend\n");
drm_agp = NULL;
return 0;
}
drm_agp->copy_info(&agp_info);
#if 0
printk(KERN_DEBUG "AGP Version : %d %d\n"
"AGP Mode: %#X\nAperture Base: %p\nAperture Size: %d\n"
"Max memory = %d\nCurrent mem = %d\nCan use perture : %s\n"
"Page mask = %#X\n",
agp_info.version.major,agp_info.version.minor,
agp_info.mode,agp_info.aper_base,agp_info.aper_size,
agp_info.max_memory,agp_info.current_memory,
agp_info.cant_use_aperture ? "no" : "yes",
agp_info.page_mask);
#endif
drm_agp->enable(agp_info.mode);
printk(KERN_INFO "AGP Enabled\n");
return 1;
}
static void agp_close(void) {
if(!drm_agp) return;
if(agp_mem) {
drm_agp->unbind_memory(agp_mem);
drm_agp->free_memory(agp_mem);
agp_mem = NULL;
}
drm_agp->release();
inter_module_put("drm_agp");
}
static int agp_move(tdfx_vid_agp_move_t* m) {
u32 src = 0;
u32 src_h,src_l;
if(!(agp_mem||map_start))
return (-EAGAIN);
if(m->move2 > 3) {
printk(KERN_DEBUG "tdfx_vid: AGP move invalid destination %d\n",
m->move2);
return (-EAGAIN);
}
if(map_start)
src = map_start + m->src;
else
src = agp_info.aper_base + m->src;
src_l = (u32)src;
src_h = (m->width | (m->src_stride << 14)) & 0x0FFFFFFF;
// banshee_wait_idle();
banshee_make_room(6);
tdfx_outl(AGPHOSTADDRESSHIGH,src_h);
tdfx_outl(AGPHOSTADDRESSLOW,src_l);
tdfx_outl(AGPGRAPHICSADDRESS, m->dst);
tdfx_outl(AGPGRAPHICSSTRIDE, m->dst_stride);
tdfx_outl(AGPREQSIZE,m->src_stride*m->height);
tdfx_outl(AGPMOVECMD,m->move2 << 3);
banshee_wait_idle();
return 0;
}
static void setup_fifo(u32 offset,ssize_t pages) {
long addr = agp_info.aper_base + offset;
u32 size = pages | 0x700; // fifo on, in agp mem, disable hole cnt
banshee_wait_idle();
tdfx_outl(CMDBASEADDR0,addr >> 4);
tdfx_outl(CMDRDPTRL0, addr << 4);
tdfx_outl(CMDRDPTRH0, addr >> 28);
tdfx_outl(CMDAMIN0, (addr - 4) & 0xFFFFFF);
tdfx_outl(CMDAMAX0, (addr - 4) & 0xFFFFFF);
tdfx_outl(CMDFIFODEPTH0, 0);
tdfx_outl(CMDHOLECNT0, 0);
tdfx_outl(CMDBASESIZE0,size);
banshee_wait_idle();
}
static int bump_fifo(u16 size) {
banshee_wait_idle();
tdfx_outl(CMDBUMP0 , size);
banshee_wait_idle();
return 0;
}
static void tdfx_vid_get_config(tdfx_vid_config_t* cfg) {
u32 in;
cfg->version = TDFX_VID_VERSION;
cfg->ram_size = tdfx_ram_size;
in = tdfx_inl(VIDSCREENSIZE);
cfg->screen_width = in & 0xFFF;
cfg->screen_height = (in >> 12) & 0xFFF;
in = (tdfx_inl(VIDPROCCFG)>> 18)& 0x7;
switch(in) {
case 0:
cfg->screen_format = TDFX_VID_FORMAT_BGR8;
break;
case 1:
cfg->screen_format = TDFX_VID_FORMAT_BGR16;
break;
case 2:
cfg->screen_format = TDFX_VID_FORMAT_BGR24;
break;
case 3:
cfg->screen_format = TDFX_VID_FORMAT_BGR32;
break;
default:
printk(KERN_INFO "tdfx_vid: unknow screen format %d\n",in);
cfg->screen_format = 0;
break;
}
cfg->screen_stride = tdfx_inl(VIDDESKSTRIDE) & 0x7FFF;
cfg->screen_start = tdfx_inl(VIDDESKSTART);
}
inline static u32 tdfx_vid_make_format(int src,u16 stride,u32 fmt) {
u32 r = stride & 0xFFF3;
u32 tdfx_fmt = 0;
// src and dest formats
switch(fmt) {
case TDFX_VID_FORMAT_BGR8:
tdfx_fmt = 1;
break;
case TDFX_VID_FORMAT_BGR16:
tdfx_fmt = 3;
break;
case TDFX_VID_FORMAT_BGR24:
tdfx_fmt = 4;
break;
case TDFX_VID_FORMAT_BGR32:
tdfx_fmt = 5;
break;
}
if(!src && !tdfx_fmt) {
printk(KERN_INFO "tdfx_vid: Invalid destination format %#X\n",fmt);
return 0;
}
if(src && !tdfx_fmt) {
// src only format
switch(fmt){
case TDFX_VID_FORMAT_BGR1:
tdfx_fmt = 0;
break;
case TDFX_VID_FORMAT_BGR15: // To check
tdfx_fmt = 2;
break;
case TDFX_VID_FORMAT_YUY2:
tdfx_fmt = 8;
break;
case TDFX_VID_FORMAT_UYVY:
tdfx_fmt = 9;
break;
default:
printk(KERN_INFO "tdfx_vid: Invalid source format %#X\n",fmt);
return 0;
}
}
r |= tdfx_fmt << 16;
return r;
}
static int tdfx_vid_blit(tdfx_vid_blit_t* blit) {
u32 src_fmt,dst_fmt,cmd = 2;
u32 cmin,cmax,srcbase,srcxy,srcfmt,srcsize;
u32 dstbase,dstxy,dstfmt,dstsize = 0;
u32 cmd_extra = 0,src_ck[2],dst_ck[2],rop123=0;
//printk(KERN_INFO "tdfx_vid: Make src fmt 0x%x\n",blit->src_format);
src_fmt = tdfx_vid_make_format(1,blit->src_stride,blit->src_format);
if(!src_fmt)
return 0;
//printk(KERN_INFO "tdfx_vid: Make dst fmt 0x%x\n", blit->dst_format);
dst_fmt = tdfx_vid_make_format(0,blit->dst_stride,blit->dst_format);
if(!dst_fmt)
return 0;
blit->colorkey &= 0x3;
// Be nice if user just want a simple blit
if((!blit->colorkey) && (!blit->rop[0]))
blit->rop[0] = TDFX_VID_ROP_COPY;
// No stretch : fix me the cmd should be 1 but it
// doesn't work. Maybe some other regs need to be set
// as non-stretch blit have more options
if(((!blit->dst_w) && (!blit->dst_h)) ||
((blit->dst_w == blit->src_w) && (blit->dst_h == blit->src_h)))
cmd = 2;
// Save the regs otherwise fb get crazy
// we can perhaps avoid some ...
banshee_wait_idle();
cmin = tdfx_inl(CLIP0MIN);
cmax = tdfx_inl(CLIP0MAX);
srcbase = tdfx_inl(SRCBASE);
srcxy = tdfx_inl(SRCXY);
srcfmt = tdfx_inl(SRCFORMAT);
srcsize = tdfx_inl(SRCSIZE);
dstbase = tdfx_inl(DSTBASE);
dstxy = tdfx_inl(DSTXY);
dstfmt = tdfx_inl(DSTFORMAT);
if(cmd == 2)
dstsize = tdfx_inl(DSTSIZE);
if(blit->colorkey & TDFX_VID_SRC_COLORKEY) {
src_ck[0] = tdfx_inl(SRCCOLORKEYMIN);
src_ck[1] = tdfx_inl(SRCCOLORKEYMAX);
tdfx_outl(SRCCOLORKEYMIN,blit->src_colorkey[0]);
tdfx_outl(SRCCOLORKEYMAX,blit->src_colorkey[1]);
}
if(blit->colorkey & TDFX_VID_DST_COLORKEY) {
dst_ck[0] = tdfx_inl(DSTCOLORKEYMIN);
dst_ck[1] = tdfx_inl(DSTCOLORKEYMAX);
tdfx_outl(SRCCOLORKEYMIN,blit->dst_colorkey[0]);
tdfx_outl(SRCCOLORKEYMAX,blit->dst_colorkey[1]);
}
if(blit->colorkey) {
cmd_extra = tdfx_inl(COMMANDEXTRA_2D);
rop123 = tdfx_inl(ROP123);
tdfx_outl(COMMANDEXTRA_2D, blit->colorkey);
tdfx_outl(ROP123,(blit->rop[1] | (blit->rop[2] << 8) | blit->rop[3] << 16));
}
// Get rid of the clipping at the moment
tdfx_outl(CLIP0MIN,0);
tdfx_outl(CLIP0MAX,0x0fff0fff);
// Setup the src
tdfx_outl(SRCBASE,blit->src & 0x00FFFFFF);
tdfx_outl(SRCXY,XYREG(blit->src_x,blit->src_y));
tdfx_outl(SRCFORMAT,src_fmt);
tdfx_outl(SRCSIZE,XYREG(blit->src_w,blit->src_h));
// Setup the dst
tdfx_outl(DSTBASE,blit->dst & 0x00FFFFFF);
tdfx_outl(DSTXY,XYREG(blit->dst_x,blit->dst_y));
tdfx_outl(DSTFORMAT,dst_fmt);
if(cmd == 2)
tdfx_outl(DSTSIZE,XYREG(blit->dst_w,blit->dst_h));
// Send the command
tdfx_outl(COMMAND_2D,cmd | 0x100 | (blit->rop[0] << 24));
banshee_wait_idle();
// Now restore the regs to make fb happy
tdfx_outl(CLIP0MIN, cmin);
tdfx_outl(CLIP0MAX, cmax);
tdfx_outl(SRCBASE, srcbase);
tdfx_outl(SRCXY, srcxy);
tdfx_outl(SRCFORMAT, srcfmt);
tdfx_outl(SRCSIZE, srcsize);
tdfx_outl(DSTBASE, dstbase);
tdfx_outl(DSTXY, dstxy);
tdfx_outl(DSTFORMAT, dstfmt);
if(cmd == 2)
tdfx_outl(DSTSIZE, dstsize);
if(blit->colorkey & TDFX_VID_SRC_COLORKEY) {
tdfx_outl(SRCCOLORKEYMIN,src_ck[0]);
tdfx_outl(SRCCOLORKEYMAX,src_ck[1]);
}
if(blit->colorkey & TDFX_VID_DST_COLORKEY) {
tdfx_outl(SRCCOLORKEYMIN,dst_ck[0]);
tdfx_outl(SRCCOLORKEYMAX,dst_ck[1]);
}
if(blit->colorkey) {
tdfx_outl(COMMANDEXTRA_2D,cmd_extra);
tdfx_outl(ROP123,rop123);
}
return 1;
}
static int tdfx_vid_set_yuv(unsigned long arg) {
tdfx_vid_yuv_t yuv;
if(copy_from_user(&yuv,(tdfx_vid_yuv_t*)arg,sizeof(tdfx_vid_yuv_t))) {
printk(KERN_DEBUG "tdfx_vid:failed copy from userspace\n");
return(-EFAULT);
}
banshee_make_room(2);
tdfx_outl(YUVBASEADDRESS,yuv.base & 0x01FFFFFF);
tdfx_outl(YUVSTRIDE, yuv.stride & 0x3FFF);
banshee_wait_idle();
return 0;
}
static int tdfx_vid_get_yuv(unsigned long arg) {
tdfx_vid_yuv_t yuv;
yuv.base = tdfx_inl(YUVBASEADDRESS) & 0x01FFFFFF;
yuv.stride = tdfx_inl(YUVSTRIDE) & 0x3FFF;
if(copy_to_user((tdfx_vid_yuv_t*)arg,&yuv,sizeof(tdfx_vid_yuv_t))) {
printk(KERN_INFO "tdfx_vid:failed copy to userspace\n");
return(-EFAULT);
}
return 0;
}
static int tdfx_vid_set_overlay(unsigned long arg) {
tdfx_vid_overlay_t ov;
uint32_t screen_w,screen_h;
uint32_t vidcfg,stride,vidbuf;
int disp_w,disp_h;
if(copy_from_user(&ov,(tdfx_vid_overlay_t*)arg,sizeof(tdfx_vid_overlay_t))) {
printk(KERN_DEBUG "tdfx_vid:failed copy from userspace\n");
return(-EFAULT);
}
if(ov.dst_x < 0 || ov.dst_y < 0) {
printk(KERN_DEBUG "tdfx_vid: Negative x/y not yet supported\n");
return(-EFAULT);
}
vidcfg = tdfx_inl(VIDPROCCFG);
// clear the overlay fmt
vidcfg &= ~(7 << 21);
switch(ov.format) {
case TDFX_VID_FORMAT_BGR15:
vidcfg |= (1 << 21);
break;
case TDFX_VID_FORMAT_BGR16:
vidcfg |= (7 << 21);
break;
case TDFX_VID_FORMAT_YUY2:
vidcfg |= (5 << 21);
break;
case TDFX_VID_FORMAT_UYVY:
vidcfg |= (6 << 21);
break;
default:
printk(KERN_DEBUG "tdfx_vid: Invalid overlay fmt 0x%x\n",ov.format);
return (-EFAULT);
}
// YUV422 need 4 bytes aligned stride and address
if((ov.format == TDFX_VID_FORMAT_YUY2 ||
ov.format == TDFX_VID_FORMAT_UYVY)) {
if((ov.src_stride & ~0x3) != ov.src_stride) {
printk(KERN_DEBUG "tdfx_vid: YUV need a 4 bytes aligned stride %d\n",ov.src_stride);
return(-EFAULT);
}
if((ov.src[0] & ~0x3) != ov.src[0] || (ov.src[1] & ~0x3) != ov.src[1]){
printk(KERN_DEBUG "tdfx_vid: YUV need a 4 bytes aligned address 0x%x 0x%x\n",ov.src[0],ov.src[1]);
return(-EFAULT);
}
}
// Now we have a good input format
// but first get the screen size to check a bit
// if the size/position is valid
screen_w = tdfx_inl(VIDSCREENSIZE);
screen_h = (screen_w >> 12) & 0xFFF;
screen_w &= 0xFFF;
disp_w = ov.dst_x + ov.dst_width > screen_w ?
screen_w - ov.dst_x : ov.dst_width;
disp_h = ov.dst_y + ov.dst_height > screen_h ?
screen_h - ov.dst_y : ov.dst_height;
if(ov.dst_x >= screen_w || ov.dst_y >= screen_h ||
disp_h <= 0 || disp_h > screen_h || disp_w <= 0 || disp_w > screen_w) {
printk(KERN_DEBUG "tdfx_vid: Invalid overlay dimension and/or position\n");
return (-EFAULT);
}
// Setup the vidproc
// H scaling
if(ov.src_width < ov.dst_width)
vidcfg |= (1<<14);
else
vidcfg &= ~(1<<14);
// V scaling
if(ov.src_height < ov.dst_height)
vidcfg |= (1<<15);
else
vidcfg &= ~(1<<15);
// Filtering can only be used in 1x mode
if(!(vidcfg | (1<<26)))
vidcfg |= (3<<16);
else
vidcfg &= ~(3<<16);
// disable overlay stereo mode
vidcfg &= ~(1<<2);
// Colorkey on/off
if(ov.use_colorkey) {
// Colorkey inversion
if(ov.invert_colorkey)
vidcfg |= (1<<6);
else
vidcfg &= ~(1<<6);
vidcfg |= (1<<5);
} else
vidcfg &= ~(1<<5);
// Overlay isn't VidIn
vidcfg &= ~(1<<9);
// vidcfg |= (1<<8);
tdfx_outl(VIDPROCCFG,vidcfg);
// Start coord
//printk(KERN_DEBUG "tdfx_vid: start %dx%d\n",ov.dst_x & 0xFFF,ov.dst_y & 0xFFF);
tdfx_outl(VIDOVRSTARTCRD,(ov.dst_x & 0xFFF)|((ov.dst_y & 0xFFF)<<12));
// End coord
tdfx_outl(VIDOVRENDCRD, ((ov.dst_x + disp_w) & 0xFFF)|
(((ov.dst_y + disp_h) & 0xFFF)<<12));
// H Scaling
tdfx_outl(VIDOVRDUDX,( ((u32)ov.src_width) << 20) / ov.dst_width);
// Src offset and width (in bytes)
tdfx_outl(VIDOVRDUDXOFF,((ov.src_width<<1) & 0xFFF) << 19);
// V Scaling
tdfx_outl(VIDOVRDVDY, ( ((u32)ov.src_height) << 20) / ov.dst_height);
//else
// tdfx_outl(VIDOVRDVDY,0);
// V Offset
tdfx_outl(VIDOVRDVDYOFF,0);
// Overlay stride
stride = tdfx_inl(VIDDESKSTRIDE) & 0xFFFF;
tdfx_outl(VIDDESKSTRIDE,stride | (((u32)ov.src_stride) << 16));
// Buffers address
tdfx_outl(LEFTOVBUF, ov.src[0]);
tdfx_outl(RIGHTOVBUF, ov.src[1]);
// Send a swap buffer cmd if we are not on one of the 2 buffers
vidbuf = tdfx_inl(VIDCUROVRSTART);
if(vidbuf != ov.src[0] && vidbuf != ov.src[1]) {
tdfx_outl(SWAPPENDING,0);
tdfx_outl(SWAPBUFCMD, 1);
}
//printk(KERN_DEBUG "tdfx_vid: Buf0=0x%x Buf1=0x%x Current=0x%x\n",
// ov.src[0],ov.src[1],tdfx_inl(VIDCUROVRSTART));
// Colorkey
if(ov.use_colorkey) {
tdfx_outl(VIDCHRMIN,ov.colorkey[0]);
tdfx_outl(VIDCHRMAX,ov.colorkey[1]);
}
return 0;
}
static int tdfx_vid_overlay_on(void) {
uint32_t vidcfg = tdfx_inl(VIDPROCCFG);
//return 0;
if(vidcfg & (1<<8)) { // Overlay is alredy on
//printk(KERN_DEBUG "tdfx_vid: Overlay is alredy on\n");
return (-EFAULT);
}
vidcfg |= (1<<8);
tdfx_outl(VIDPROCCFG,vidcfg);
return 0;
}
static int tdfx_vid_overlay_off(void) {
uint32_t vidcfg = tdfx_inl(VIDPROCCFG);
if(vidcfg & (1<<8)) {
vidcfg &= ~(1<<8);
tdfx_outl(VIDPROCCFG,vidcfg);
return 0;
}
printk(KERN_DEBUG "tdfx_vid: Overlay is alredy off\n");
return (-EFAULT);
}
static int tdfx_vid_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
{
tdfx_vid_agp_move_t move;
tdfx_vid_config_t cfg;
tdfx_vid_blit_t blit;
u16 int16;
switch(cmd) {
case TDFX_VID_AGP_MOVE:
if(copy_from_user(&move,(tdfx_vid_agp_move_t*)arg,sizeof(tdfx_vid_agp_move_t))) {
printk(KERN_INFO "tdfx_vid:failed copy from userspace\n");
return(-EFAULT);
}
return agp_move(&move);
case TDFX_VID_BUMP0:
if(copy_from_user(&int16,(u16*)arg,sizeof(u16))) {
printk(KERN_INFO "tdfx_vid:failed copy from userspace\n");
return(-EFAULT);
}
return bump_fifo(int16);
case TDFX_VID_BLIT:
if(copy_from_user(&blit,(tdfx_vid_blit_t*)arg,sizeof(tdfx_vid_blit_t))) {
printk(KERN_INFO "tdfx_vid:failed copy from userspace\n");
return(-EFAULT);
}
if(!tdfx_vid_blit(&blit)) {
printk(KERN_INFO "tdfx_vid: Blit failed\n");
return(-EFAULT);
}
return 0;
case TDFX_VID_GET_CONFIG:
if(copy_from_user(&cfg,(tdfx_vid_config_t*)arg,sizeof(tdfx_vid_config_t))) {
printk(KERN_INFO "tdfx_vid:failed copy from userspace\n");
return(-EFAULT);
}
tdfx_vid_get_config(&cfg);
if(copy_to_user((tdfx_vid_config_t*)arg,&cfg,sizeof(tdfx_vid_config_t))) {
printk(KERN_INFO "tdfx_vid:failed copy to userspace\n");
return(-EFAULT);
}
return 0;
case TDFX_VID_SET_YUV:
return tdfx_vid_set_yuv(arg);
case TDFX_VID_GET_YUV:
return tdfx_vid_get_yuv(arg);
case TDFX_VID_SET_OVERLAY:
return tdfx_vid_set_overlay(arg);
case TDFX_VID_OVERLAY_ON:
return tdfx_vid_overlay_on();
case TDFX_VID_OVERLAY_OFF:
return tdfx_vid_overlay_off();
default:
printk(KERN_ERR "tdfx_vid: Invalid ioctl %d\n",cmd);
return (-EINVAL);
}
return 0;
}
static ssize_t tdfx_vid_read(struct file *file, char *buf, size_t count, loff_t *ppos)
{
return 0;
}
static ssize_t tdfx_vid_write(struct file *file, const char *buf, size_t count, loff_t *ppos)
{
return 0;
}
static void tdfx_vid_mopen(struct vm_area_struct *vma) {
int i;
struct page *page;
unsigned long phys;
printk(KERN_DEBUG "tdfx_vid: mopen\n");
for(i = 0 ; i < agp_mem->page_count ; i++) {
phys = agp_mem->memory[i] & ~(0x00000fff);
page = virt_to_page(phys_to_virt(phys));
if(!page) {
printk(KERN_DEBUG "tdfx_vid: Can't get the page %d\%d\n",i,agp_mem->page_count);
return;
}
get_page(page);
}
MOD_INC_USE_COUNT;
}
static void tdfx_vid_mclose(struct vm_area_struct *vma) {
int i;
struct page *page;
unsigned long phys;
printk(KERN_DEBUG "tdfx_vid: mclose\n");
for(i = 0 ; i < agp_mem->page_count ; i++) {
phys = agp_mem->memory[i] & ~(0x00000fff);
page = virt_to_page(phys_to_virt(phys));
if(!page) {
printk(KERN_DEBUG "tdfx_vid: Can't get the page %d\%d\n",i,agp_mem->page_count);
return;
}
put_page(page);
}
MOD_DEC_USE_COUNT;
}
static struct page *tdfx_vid_nopage(struct vm_area_struct *vma,
unsigned long address,
int write_access) {
unsigned long off;
uint32_t n;
struct page *page;
unsigned long phys;
off = address - vma->vm_start + (vma->vm_pgoff<<PAGE_SHIFT);
n = off / PAGE_SIZE;
if(n >= agp_mem->page_count) {
printk(KERN_DEBUG "tdfx_vid: Too far away\n");
return ((struct page *)0UL);
}
phys = agp_mem->memory[n] & ~(0x00000fff);
page = virt_to_page(phys_to_virt(phys));
if(!page) {
printk(KERN_DEBUG "tdfx_vid: Can't get the page\n");
return ((struct page *)0UL);
}
return page;
}
/* memory handler functions */
static struct vm_operations_struct tdfx_vid_vm_ops = {
open: tdfx_vid_mopen, /* mmap-open */
close: tdfx_vid_mclose,/* mmap-close */
nopage: tdfx_vid_nopage, /* no-page fault handler */
};
static int tdfx_vid_mmap(struct file *file, struct vm_area_struct *vma)
{
size_t size;
#ifdef MP_DEBUG
printk(KERN_DEBUG "tdfx_vid: mapping agp memory into userspace\n");
#endif
size = (vma->vm_end-vma->vm_start + PAGE_SIZE - 1) / PAGE_SIZE;
if(map_start) { // Ok we map directly in the physcal ram
if(size*PAGE_SIZE > map_max) {
printk(KERN_ERR "tdfx_vid: Not enouth mem\n");
return(-EAGAIN);
}
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,3)
if(remap_page_range(vma, vma->vm_start,map_start,
vma->vm_end - vma->vm_start, vma->vm_page_prot))
#else
if(remap_page_range(vma->vm_start, (unsigned long)map_start,
vma->vm_end - vma->vm_start, vma->vm_page_prot))
#endif
{
printk(KERN_ERR "tdfx_vid: error mapping video memory\n");
return(-EAGAIN);
}
printk(KERN_INFO "Physical mem 0x%lx mapped in userspace\n",map_start);
return 0;
}
if(agp_mem)
return(-EAGAIN);
agp_mem = drm_agp->allocate_memory(size,AGP_NORMAL_MEMORY);
if(!agp_mem) {
printk(KERN_ERR "Failed to allocate AGP memory\n");
return(-ENOMEM);
}
if(drm_agp->bind_memory(agp_mem,0)) {
printk(KERN_ERR "Failed to bind the AGP memory\n");
drm_agp->free_memory(agp_mem);
agp_mem = NULL;
return(-ENOMEM);
}
printk(KERN_INFO "%d pages of AGP mem allocated (%ld/%ld bytes) :)))\n",
size,vma->vm_end-vma->vm_start,size*PAGE_SIZE);
if(tdfx_map_io) {
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,3)
if(remap_page_range(vma, vma->vm_start,agp_info.aper_base,
vma->vm_end - vma->vm_start, vma->vm_page_prot))
#else
if(remap_page_range(vma->vm_start, (unsigned long)agp_info.aper_base,
vma->vm_end - vma->vm_start, vma->vm_page_prot))
#endif
{
printk(KERN_ERR "tdfx_vid: error mapping video memory\n");
return(-EAGAIN);
}
} else {
// Never swap it out
vma->vm_flags |= VM_LOCKED | VM_IO;
vma->vm_ops = &tdfx_vid_vm_ops;
vma->vm_ops->open(vma);
printk(KERN_INFO "Page fault handler ready !!!!!\n");
}
return 0;
}
static int tdfx_vid_release(struct inode *inode, struct file *file)
{
#ifdef MP_DEBUG
printk(KERN_DEBUG "tdfx_vid: Video OFF (release)\n");
#endif
// Release the agp mem
if(agp_mem) {
drm_agp->unbind_memory(agp_mem);
drm_agp->free_memory(agp_mem);
agp_mem = NULL;
}
tdfx_vid_in_use = 0;
MOD_DEC_USE_COUNT;
return 0;
}
static long long tdfx_vid_lseek(struct file *file, long long offset, int origin)
{
return -ESPIPE;
}
static int tdfx_vid_open(struct inode *inode, struct file *file)
{
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,2)
int minor = MINOR(inode->i_rdev.value);
#else
int minor = MINOR(inode->i_rdev);
#endif
if(minor != 0)
return(-ENXIO);
if(tdfx_vid_in_use == 1)
return(-EBUSY);
tdfx_vid_in_use = 1;
MOD_INC_USE_COUNT;
return(0);
}
#if LINUX_VERSION_CODE >= 0x020400
static struct file_operations tdfx_vid_fops =
{
llseek: tdfx_vid_lseek,
read: tdfx_vid_read,
write: tdfx_vid_write,
ioctl: tdfx_vid_ioctl,
mmap: tdfx_vid_mmap,
open: tdfx_vid_open,
release: tdfx_vid_release
};
#else
static struct file_operations tdfx_vid_fops =
{
tdfx_vid_lseek,
tdfx_vid_read,
tdfx_vid_write,
NULL,
NULL,
tdfx_vid_ioctl,
tdfx_vid_mmap,
tdfx_vid_open,
NULL,
tdfx_vid_release
};
#endif
int init_module(void)
{
tdfx_vid_in_use = 0;
if(register_chrdev(TDFX_VID_MAJOR, "tdfx_vid", &tdfx_vid_fops)) {
printk(KERN_ERR "tdfx_vid: unable to get major: %d\n", TDFX_VID_MAJOR);
return -EIO;
}
if(!agp_init()) {
printk(KERN_ERR "tdfx_vid: AGP init failed\n");
unregister_chrdev(TDFX_VID_MAJOR, "tdfx_vid");
return -EINVAL;
}
if (!tdfx_vid_find_card()) {
printk(KERN_ERR "tdfx_vid: no supported devices found\n");
agp_close();
unregister_chrdev(TDFX_VID_MAJOR, "tdfx_vid");
return -EINVAL;
}
return (0);
}
void cleanup_module(void)
{
if(tdfx_mmio_base)
iounmap(tdfx_mmio_base);
agp_close();
printk(KERN_INFO "tdfx_vid: Cleaning up module\n");
unregister_chrdev(TDFX_VID_MAJOR, "tdfx_vid");
}
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