* so don't do it again
*/
#define OPT_HT_LINK 0
-
+
#if OPT_HT_LINK == 1
#include <cpu/amd/model_fxx_rev.h>
#endif
/* Extract the chain of devices to (first through last)
* for the next hypertransport device.
*/
- while(last && last->sibling &&
+ while(last && last->sibling &&
(last->sibling->path.type == DEVICE_PATH_PCI) &&
- (last->sibling->path.pci.devfn > last->path.pci.devfn))
+ (last->sibling->path.pci.devfn > last->path.pci.devfn))
{
last = last->sibling;
}
}
/* AMD K8 Unsupported 1Ghz? */
if ((dev->vendor == PCI_VENDOR_ID_AMD) && (dev->device == 0x1100)) {
-#if CONFIG_K8_HT_FREQ_1G_SUPPORT == 1
- #if CONFIG_K8_REV_F_SUPPORT == 0
+#if CONFIG_K8_HT_FREQ_1G_SUPPORT == 1
+ #if CONFIG_K8_REV_F_SUPPORT == 0
if (is_cpu_pre_e0()) { // only e0 later suupport 1GHz HT
freq_cap &= ~(1 << HT_FREQ_1000Mhz);
- }
+ }
#endif
#else
freq_cap &= ~(1 << HT_FREQ_1000Mhz);
static const uint8_t pow2_to_link_width[] = { 0x7, 4, 5, 0, 1, 3 };
unsigned present_width_cap, upstream_width_cap;
unsigned present_freq_cap, upstream_freq_cap;
- unsigned ln_present_width_in, ln_upstream_width_in;
+ unsigned ln_present_width_in, ln_upstream_width_in;
unsigned ln_present_width_out, ln_upstream_width_out;
unsigned freq, old_freq;
unsigned present_width, upstream_width, old_width;
/* Set the hypertransport link width and frequency */
reset_needed = 0;
- /* See which side of the device our previous write to
+ /* See which side of the device our previous write to
* set the unitid came from.
*/
cur->dev = dev;
upstream_freq_cap = ht_read_freq_cap(prev->dev, prev->pos + prev->freq_cap_off);
present_width_cap = pci_read_config8(cur->dev, cur->pos + cur->config_off);
upstream_width_cap = pci_read_config8(prev->dev, prev->pos + prev->config_off);
-
+
/* Calculate the highest useable frequency */
freq = log2(present_freq_cap & upstream_freq_cap);
}
}
#endif
-
+
/* Remember the current link as the previous link,
* But look at the other offsets.
*/
}
return reset_needed;
-
+
}
static unsigned ht_lookup_slave_capability(struct device *dev)
dummy.path.type = DEVICE_PATH_PCI;
dummy.path.pci.devfn = devfn;
id = pci_read_config32(&dummy, PCI_VENDOR_ID);
- if ( (id == 0xffffffff) || (id == 0x00000000) ||
+ if ( (id == 0xffffffff) || (id == 0x00000000) ||
(id == 0x0000ffff) || (id == 0xffff0000)) {
continue;
}
flags = pci_read_config16(&dummy, pos + PCI_CAP_FLAGS);
flags &= ~0x1f;
pci_write_config16(&dummy, pos + PCI_CAP_FLAGS, flags);
- printk(BIOS_SPEW, "Collapsing %s [%04x/%04x]\n",
+ printk(BIOS_SPEW, "Collapsing %s [%04x/%04x]\n",
dev_path(&dummy), dummy.vendor, dummy.device);
}
}
-unsigned int hypertransport_scan_chain(struct bus *bus,
+unsigned int hypertransport_scan_chain(struct bus *bus,
unsigned min_devfn, unsigned max_devfn, unsigned int max, unsigned *ht_unitid_base, unsigned offset_unitid)
{
//even CONFIG_HT_CHAIN_UNITID_BASE == 0, we still can go through this function, because of end_of_chain check, also We need it to optimize link
prev.config_off = PCI_HT_CAP_HOST_WIDTH;
prev.freq_off = PCI_HT_CAP_HOST_FREQ;
prev.freq_cap_off = PCI_HT_CAP_HOST_FREQ_CAP;
-
+
/* If present assign unitid to a hypertransport chain */
last_unitid = min_unitid -1;
max_unitid = next_unitid = min_unitid;
}
}
} while((ctrl & (1 << 5)) == 0);
-
+
/* Get and setup the device_structure */
dev = ht_scan_get_devs(&old_devices);
/* Find the hypertransport link capability */
pos = ht_lookup_slave_capability(dev);
if (pos == 0) {
- printk(BIOS_ERR, "%s Hypertransport link capability not found",
+ printk(BIOS_ERR, "%s Hypertransport link capability not found",
dev_path(dev));
break;
}
-
+
/* Update the Unitid of the current device */
flags = pci_read_config16(dev, pos + PCI_CAP_FLAGS);
-
- /* If the devices has a unitid set and is at devfn 0 we are done.
+
+ /* If the devices has a unitid set and is at devfn 0 we are done.
* This can happen with shadow hypertransport devices,
* or if we have reached the bottom of a
* hypertransport device chain.
}
}
- }
+ }
#endif
flags |= next_unitid & 0x1f;
static_count = 1;
for(func = dev; func; func = func->sibling) {
func->path.pci.devfn += (next_unitid << 3);
- static_count = (func->path.pci.devfn >> 3)
+ static_count = (func->path.pci.devfn >> 3)
- (dev->path.pci.devfn >> 3) + 1;
last_func = func;
}
/* Compute the number of unitids consumed */
- printk(BIOS_SPEW, "%s count: %04x static_count: %04x\n",
+ printk(BIOS_SPEW, "%s count: %04x static_count: %04x\n",
dev_path(dev), count, static_count);
if (count < static_count) {
count = static_count;
printk(BIOS_DEBUG, "%s [%04x/%04x] %s next_unitid: %04x\n",
dev_path(dev),
- dev->vendor, dev->device,
+ dev->vendor, dev->device,
(dev->enabled? "enabled": "disabled"), next_unitid);
} while (last_unitid != next_unitid);
}
ht_unitid_base[ht_dev_num-1] = CONFIG_HT_CHAIN_END_UNITID_BASE; // update last one
-
+
printk(BIOS_DEBUG, " unitid: %04x --> %04x\n",
real_last_unitid, CONFIG_HT_CHAIN_END_UNITID_BASE);
if (next_unitid > 0x20) {
next_unitid = 0x20;
}
- if( (bus->secondary == 0) && (next_unitid > 0x18)) {
+ if( (bus->secondary == 0) && (next_unitid > 0x18)) {
next_unitid = 0x18; /* avoid K8 on bus 0 */
}
- /* Die if any leftover Static devices are are found.
+ /* Die if any leftover Static devices are are found.
* There's probably a problem in the Config.lb.
*/
if(old_devices) {
}
printk(BIOS_ERR, "HT: Left over static devices. Check your Config.lb\n");
if(last_func && !last_func->sibling) // put back the left over static device, and let pci_scan_bus disable it
- last_func->sibling = old_devices;
+ last_func->sibling = old_devices;
}
/* Now that nothing is overlapping it is safe to scan the
- * children.
+ * children.
*/
- max = pci_scan_bus(bus, 0x00, ((next_unitid-1) << 3)|7, max);
- return max;
+ max = pci_scan_bus(bus, 0x00, ((next_unitid-1) << 3)|7, max);
+ return max;
}
/**
projects / coreboot.git / blobdiff