int pci_config_write(unsigned char bus, unsigned char dev, unsigned char func,
unsigned char cmd, int len, unsigned long val)
{
int ret;
ret = enable_app_io();
if (ret != 0)
return ret;
switch(len)
{
case 4:
pci_config_write_long(bus, dev, func, cmd, val);
break;
case 2:
pci_config_write_word(bus, dev, func, cmd, val);
break;
case 1:
pci_config_write_byte(bus, dev, func, cmd, val);
break;
default:
printf("libdha_pci: wrong length to read: %u\n",len);
}
disable_app_io();
return 0;
}
int pci_config_write(unsigned char bus, unsigned char dev, unsigned char func,
unsigned char cmd, int len, unsigned long val)
{
int ret;
int dhahelper_fd;
if ( (dhahelper_fd = open("/dev/dhahelper",O_RDWR)) > 0)
{
int retval;
dhahelper_pci_config_t pcic;
pcic.operation = PCI_OP_WRITE;
pcic.bus = bus;
pcic.dev = dev;
pcic.func = func;
pcic.cmd = cmd;
pcic.size = len;
pcic.ret = val;
retval = ioctl(dhahelper_fd, DHAHELPER_PCI_CONFIG, &pcic);
close(dhahelper_fd);
return retval;
}
ret = enable_app_io();
if (ret != 0)
return ret;
switch(len)
{
case 4:
pci_config_write_long(bus, dev, func, cmd, val);
break;
case 2:
pci_config_write_word(bus, dev, func, cmd, val);
break;
case 1:
pci_config_write_byte(bus, dev, func, cmd, val);
break;
default:
printf("libdha_pci: wrong length to read: %u\n",len);
}
disable_app_io();
return 0;
}
