uint32_t PCI::read_dword(uint32_t bus, uint32_t slot, uint32_t func, uint32_t offset)
{
uint32_t id = ((bus) << 16) | ((slot) << 11) | ((func) << 8);
uint32_t addr = 0x80000000 | id | (offset & 0xfc);
outportd(0xCF8, addr);
uint32 val = inportd(0xCFC);
return val;
}
uint32_t PCI_READ_DATA(uint32_t addr){
uint32_t data;
asm volatile("cli\n");
outportd(0x0CF8,addr);
data=inportd(0x0CFC);
asm volatile("sti\n");
return data;
}
// PCI Enumerator Device
int devcall_PCIENUM(CALLFS_PARAM* param){
CALLFS_IOCTL* ioctl=(CALLFS_IOCTL*)param;
CALLFS_DTX* dtx=(CALLFS_DTX*)param;
switch(param->fscmd){
// always through
case devcall_open:
case devcall_close:
return 0;
// IOCTL
case devcall_ioctl:
{
switch(ioctl->ioctl_cmd){
case ioctl_get_information:
*(volume_info*)ioctl->data=volume;
return 0;
case ioctl_read_toc:
case ioctl_reset_device:
case ioctl_check_read_status:
case ioctl_check_write_status:
case ioctl_nop:
return 0;
case ioctl_fast_find:
{
fastfind_t* ff=(fastfind_t*)ioctl->data;
if(!::strcmp(ff->name,"/")){
::memset(ff->result,0,sizeof(readdir_t));
ff->result->raw[0]='/';
ff->result->filename[0]='/';
ff->result->devid=ioctl->device;
return 0;
}
}
return -ENOENT;
default:
return -EINVAL;
}
}
// read
case devcall_read:
{
int i=dtx->index;
if(i<=pcidevices){
uint32_t addr=pci_devices[i-1].addr;
uint32_t* buff=(uint32_t*)dtx->data;
asm volatile("cli");
for(int c=0;c<64;c++){
outportd(0x0CF8,addr+(c<<2));
buff[c]=inportd(0x0CFC);
}
asm volatile("sti");
dtx->count--;
return 0;
}
return -ENOENT;
}
// write
case devcall_write:
return -EROFS;
// read dir
case devcall_read_dir:
{
int i=dtx->offset;
readdir_t* rd=(readdir_t*)dtx->data;
if(i < pcidevices){
::memset(rd,0,sizeof(readdir_t));
rd->raw[0]='?';
::strcpy(rd->filename,pci_devices[i].name);
rd->devid=ioctl->device;
rd->index=1+i;
rd->size=256;
return 0;
}
return -EINVAL;
}
// otherwise not supported
default:
return -EINVAL;
}
