static struct resource *amdfam12_find_mempair(device_t dev, u32 nodeid, u32 link)
{
struct resource *resource;
u32 free_reg, reg;
resource = 0;
free_reg = 0;
for(reg = 0x80; reg <= 0xb8; reg += 0x8) {
int result;
result = reg_useable(reg, dev, nodeid, link);
if (result == 1) {
/* I have been allocated this one */
break;
}
else if (result > 1) {
/* I have a free register pair */
free_reg = reg;
}
}
if (reg > 0xb8) {
reg = free_reg;
}
//Ext conf space
if(!reg) {
//because of Extend conf space, we will never run out of reg,
// but we need one index to differ them. so same node and
// same link can have multi range
u32 index = get_mmio_addr_index(nodeid, link);
reg = 0x110+ (index<<24) + (6<<20); // index could be 0, 63
}
resource = new_resource(dev, IOINDEX(0x1000 + reg, link));
return resource;
}
static struct resource *amdfam14_find_iopair(device_t dev, unsigned nodeid,
unsigned link)
{
struct resource *resource;
u32 result, reg;
resource = 0;
reg = 0;
result = reg_useable(0xc0, dev, nodeid, link);
if (result >= 1) {
/* I have been allocated this one */
reg = 0xc0;
}
/* Ext conf space */
if (!reg) {
/* Because of Extend conf space, we will never run out of reg,
* but we need one index to differ them. So ,same node and same
* link can have multi range
*/
u32 index = get_io_addr_index(nodeid, link);
reg = 0x110 + (index << 24) + (4 << 20); // index could be 0, 255
}
resource = new_resource(dev, IOINDEX(0x1000 + reg, link));
return resource;
}
static int reg_useable(unsigned reg, device_t goal_dev, unsigned goal_nodeid,
unsigned goal_link)
{
struct resource *res;
unsigned nodeid, link = 0;
int result;
printk(BIOS_DEBUG, "\nFam12h - northbridge.c - %s - Start.\n",__func__);
res = 0;
for(nodeid = 0; !res && (nodeid < fx_devs); nodeid++) {
device_t dev;
dev = __f0_dev[nodeid];
if (!dev)
continue;
for(link = 0; !res && (link < 8); link++) {
res = probe_resource(dev, IOINDEX(0x1000 + reg, link));
}
}
result = 2;
if (res) {
result = 0;
if ( (goal_link == (link - 1)) &&
(goal_nodeid == (nodeid - 1)) &&
(res->flags <= 1)) {
result = 1;
}
}
printk(BIOS_DEBUG, "Fam12h - northbridge.c - %s - End.\n",__func__);
return result;
}
static int reg_useable(unsigned reg, device_t goal_dev, unsigned goal_nodeid,
unsigned goal_link)
{
struct resource *res;
unsigned nodeid, link = 0;
int result;
res = 0;
for (nodeid = 0; !res && (nodeid < fx_devs); nodeid++) {
device_t dev;
dev = __f0_dev[nodeid];
if (!dev)
continue;
for (link = 0; !res && (link < 8); link++) {
res = probe_resource(dev, IOINDEX(0x1000 + reg, link));
}
}
result = 2;
if (res) {
result = 0;
if ((goal_link == (link - 1)) &&
(goal_nodeid == (nodeid - 1)) && (res->flags <= 1)) {
result = 1;
}
}
return result;
}
