* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
-/*
- 2005.11 yhlu add let the real sb to use small uintid
-*/
-
#include <bitops.h>
#include <console/console.h>
#include <device/device.h>
#include <device/pci.h>
#include <device/pci_ids.h>
#include <device/hypertransport.h>
-#include <part/hard_reset.h>
-#include <part/fallback_boot.h>
-/* The hypertransport link is already optimized in pre-ram code
- * so don't do it again
+/*
+ * The hypertransport link is already optimized in pre-RAM code 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);
unsigned new_freq;
pci_write_config8(cur->dev, cur->pos + cur->freq_off, freq);
reset_needed = 1;
- printk_spew("HyperT FreqP old %x new %x\n",old_freq,freq);
+ printk(BIOS_SPEW, "HyperT FreqP old %x new %x\n",old_freq,freq);
new_freq = pci_read_config8(cur->dev, cur->pos + cur->freq_off);
new_freq &= 0x0f;
if (new_freq != freq) {
- printk_err("%s Hypertransport frequency would not set wanted: %x got: %x\n",
+ printk(BIOS_ERR, "%s Hypertransport frequency would not set wanted: %x got: %x\n",
dev_path(dev), freq, new_freq);
}
}
pci_write_config8(cur->dev, cur->pos + cur->config_off + 1,
present_width);
reset_needed = 1;
- printk_spew("HyperT widthP old %x new %x\n",old_width, present_width);
+ printk(BIOS_SPEW, "HyperT widthP old %x new %x\n",old_width, present_width);
new_width = pci_read_config8(cur->dev, cur->pos + cur->config_off + 1);
if (new_width != present_width) {
- printk_err("%s Hypertransport width would not set wanted: %x got: %x\n",
+ printk(BIOS_ERR, "%s Hypertransport width would not set wanted: %x got: %x\n",
dev_path(dev), present_width, new_width);
}
}
unsigned new_freq;
pci_write_config8(prev->dev, prev->pos + prev->freq_off, freq);
reset_needed = 1;
- printk_spew("HyperT freqU old %x new %x\n", old_freq, freq);
+ printk(BIOS_SPEW, "HyperT freqU old %x new %x\n", old_freq, freq);
new_freq = pci_read_config8(prev->dev, prev->pos + prev->freq_off);
new_freq &= 0x0f;
if (new_freq != freq) {
- printk_err("%s Hypertransport frequency would not set wanted: %x got: %x\n",
+ printk(BIOS_ERR, "%s Hypertransport frequency would not set wanted: %x got: %x\n",
dev_path(prev->dev), freq, new_freq);
}
}
unsigned new_width;
pci_write_config8(prev->dev, prev->pos + prev->config_off + 1, upstream_width);
reset_needed = 1;
- printk_spew("HyperT widthU old %x new %x\n", old_width, upstream_width);
+ printk(BIOS_SPEW, "HyperT widthU old %x new %x\n", old_width, upstream_width);
new_width = pci_read_config8(prev->dev, prev->pos + prev->config_off + 1);
if (new_width != upstream_width) {
- printk_err("%s Hypertransport width would not set wanted: %x got: %x\n",
+ printk(BIOS_ERR, "%s Hypertransport width would not set wanted: %x got: %x\n",
dev_path(prev->dev), upstream_width, new_width);
}
}
#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)
if (pos) {
unsigned flags;
flags = pci_read_config16(dev, pos + PCI_CAP_FLAGS);
- printk_spew("flags: 0x%04x\n", flags);
+ printk(BIOS_SPEW, "flags: 0x%04x\n", flags);
if ((flags >> 13) == 0) {
/* Entry is a Slave secondary, success... */
break;
pci_write_config16(prev.dev, prev.pos + prev.ctrl_off, ctrl);
ctrl = pci_read_config16(prev.dev, prev.pos + prev.ctrl_off);
if (ctrl & ((1 << 4) | (1 << 8))) {
- printk_alert("Detected error on Hypertransport Link\n");
+ printk(BIOS_ALERT, "Detected error on Hypertransport Link\n");
return;
}
}
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_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
#if CONFIG_HT_CHAIN_END_UNITID_BASE != 0x20
//let't record the device of last ht device, So we can set the Unitid to CONFIG_HT_CHAIN_END_UNITID_BASE
- unsigned real_last_unitid;
- uint8_t real_last_pos;
- device_t real_last_dev;
+ unsigned real_last_unitid=0;
+ uint8_t real_last_pos=0;
+ device_t real_last_dev=NULL;
unsigned end_used = 0;
#endif
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;
pci_write_config16(prev.dev, prev.pos + prev.ctrl_off, ctrl);
ctrl = pci_read_config16(prev.dev, prev.pos + prev.ctrl_off);
if (ctrl & ((1 << 4) | (1 << 8))) {
- printk_alert("Detected error on Hypertransport Link\n");
+ printk(BIOS_ALERT, "Detected error on Hypertransport Link\n");
goto end_of_chain;
}
}
} 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_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_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;
/* Setup the hypetransport link */
bus->reset_needed |= ht_setup_link(&prev, dev, pos);
- printk_debug("%s [%04x/%04x] %s next_unitid: %04x\n",
+ 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);
end_of_chain:
#if OPT_HT_LINK == 1
if(bus->reset_needed) {
- printk_info("HyperT reset needed\n");
+ printk(BIOS_INFO, "HyperT reset needed\n");
}
else {
- printk_debug("HyperT reset not needed\n");
+ printk(BIOS_DEBUG, "HyperT reset not needed\n");
}
#endif
#if CONFIG_HT_CHAIN_END_UNITID_BASE != 0x20
if(offset_unitid && (ht_dev_num>1) && (real_last_unitid != CONFIG_HT_CHAIN_END_UNITID_BASE) && !end_used) {
uint16_t flags;
- int i;
- device_t last_func = 0;
flags = pci_read_config16(real_last_dev, real_last_pos + PCI_CAP_FLAGS);
flags &= ~0x1f;
flags |= CONFIG_HT_CHAIN_END_UNITID_BASE & 0x1f;
}
ht_unitid_base[ht_dev_num-1] = CONFIG_HT_CHAIN_END_UNITID_BASE; // update last one
-
- printk_debug(" unitid: %04x --> %04x\n",
+
+ 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) {
device_t left;
for(left = old_devices; left; left = left->sibling) {
- printk_debug("%s\n", dev_path(left));
+ printk(BIOS_DEBUG, "%s\n", dev_path(left));
}
- printk_err("HT: Left over static devices. Check your Config.lb\n");
+ 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;
}
/**
- * @brief Scan a PCI bridge and the buses behind the bridge.
+ * Scan a PCI bridge and the buses behind the bridge.
*
* Determine the existence of buses behind the bridge. Set up the bridge
* according to the result of the scan.
*
* This function is the default scan_bus() method for PCI bridge devices.
*
- * @param dev pointer to the bridge device
- * @param max the highest bus number assgined up to now
- *
- * @return The maximum bus number found, after scanning all subordinate busses
+ * @param bus TODO
+ * @param min_devfn TODO
+ * @param max_devfn TODO
+ * @param max The highest bus number assgined up to now.
+ * @return The maximum bus number found, after scanning all subordinate busses.
*/
-unsigned int hypertransport_scan_chain_x(struct bus *bus,
+static unsigned int hypertransport_scan_chain_x(struct bus *bus,
unsigned min_devfn, unsigned max_devfn, unsigned int max)
{
unsigned ht_unitid_base[4];
return do_pci_scan_bridge(dev, max, hypertransport_scan_chain_x);
}
-
/** Default device operations for hypertransport bridges */
static struct pci_operations ht_bus_ops_pci = {
.set_subsystem = 0,
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