summaryrefslogtreecommitdiff
path: root/src/devices
diff options
context:
space:
mode:
Diffstat (limited to 'src/devices')
-rw-r--r--src/devices/Config.lb1
-rw-r--r--src/devices/hypertransport.c319
-rw-r--r--src/devices/pci_device.c268
3 files changed, 320 insertions, 268 deletions
diff --git a/src/devices/Config.lb b/src/devices/Config.lb
index 063aa1db92..6da04ee2e4 100644
--- a/src/devices/Config.lb
+++ b/src/devices/Config.lb
@@ -2,4 +2,5 @@ object device.o
object root_device.o
object device_util.o
object pci_device.o
+object hypertransport.o
object chip.o
diff --git a/src/devices/hypertransport.c b/src/devices/hypertransport.c
new file mode 100644
index 0000000000..26cd237e8a
--- /dev/null
+++ b/src/devices/hypertransport.c
@@ -0,0 +1,319 @@
+#include <bitops.h>
+#include <console/console.h>
+#include <device/device.h>
+#include <device/path.h>
+#include <device/pci.h>
+#include <part/hard_reset.h>
+#include <part/fallback_boot.h>
+
+static device_t ht_scan_get_devs(device_t *old_devices)
+{
+ device_t first, last;
+ first = *old_devices;
+ last = first;
+ while(last && last->sibling &&
+ (last->sibling->path.u.pci.devfn > last->path.u.pci.devfn)) {
+ last = last->sibling;
+ }
+ if (first) {
+ *old_devices = last->sibling;
+ last->sibling = 0;
+ }
+ return first;
+}
+
+
+struct prev_link {
+ struct device *dev;
+ unsigned pos;
+ unsigned char config_off, freq_off, freq_cap_off;
+};
+
+static int ht_setup_link(struct prev_link *prev, device_t dev, unsigned pos)
+{
+ static const uint8_t link_width_to_pow2[]= { 3, 4, 0, 5, 1, 2, 0, 0 };
+ 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_out, ln_upstream_width_out;
+ unsigned freq, old_freq;
+ unsigned present_width, upstream_width, old_width;
+ int reset_needed;
+
+ /* Set the hypertransport link width and frequency */
+ reset_needed = 0;
+
+ /* Read the capabilities */
+ present_freq_cap = pci_read_config16(dev, pos + PCI_HT_CAP_SLAVE_FREQ_CAP0);
+ upstream_freq_cap = pci_read_config16(prev->dev, prev->pos + prev->freq_cap_off);
+ present_width_cap = pci_read_config8(dev, pos + PCI_HT_CAP_SLAVE_WIDTH0);
+ upstream_width_cap = pci_read_config8(prev->dev, prev->pos + prev->config_off);
+
+ /* Calculate the highest useable frequency */
+#if 0
+ freq = log2(present_freq_cap & upstream_freq_cap);
+#else
+ /* Errata for 8131 - freq 5 has hardware problems don't support it */
+ freq = log2(present_freq_cap & upstream_freq_cap & 0x1f);
+#endif
+
+ /* Calculate the highest width */
+ ln_upstream_width_in = link_width_to_pow2[upstream_width_cap & 7];
+ ln_present_width_out = link_width_to_pow2[(present_width_cap >> 4) & 7];
+ if (ln_upstream_width_in > ln_present_width_out) {
+ ln_upstream_width_in = ln_present_width_out;
+ }
+ upstream_width = pow2_to_link_width[ln_upstream_width_in];
+ present_width = pow2_to_link_width[ln_upstream_width_in] << 4;
+
+ ln_upstream_width_out = link_width_to_pow2[(upstream_width_cap >> 4) & 7];
+ ln_present_width_in = link_width_to_pow2[present_width_cap & 7];
+ if (ln_upstream_width_out > ln_present_width_in) {
+ ln_upstream_width_out = ln_present_width_in;
+ }
+ upstream_width |= pow2_to_link_width[ln_upstream_width_out] << 4;
+ present_width |= pow2_to_link_width[ln_upstream_width_out];
+
+ /* Set the current device */
+ old_freq = pci_read_config8(dev, pos + PCI_HT_CAP_SLAVE_FREQ0);
+ if (freq != old_freq) {
+ pci_write_config8(dev, pos + PCI_HT_CAP_SLAVE_FREQ0, freq);
+ reset_needed = 1;
+ printk_spew("HyperT FreqP old %x new %x\n",old_freq,freq);
+ }
+ old_width = pci_read_config8(dev, pos + PCI_HT_CAP_SLAVE_WIDTH0 + 1);
+ if (present_width != old_width) {
+ pci_write_config8(dev, pos + PCI_HT_CAP_SLAVE_WIDTH0 + 1, present_width);
+ reset_needed = 1;
+ printk_spew("HyperT widthP old %x new %x\n",old_width, present_width);
+ }
+
+ /* Set the upstream device */
+ old_freq = pci_read_config8(prev->dev, prev->pos + prev->freq_off);
+ old_freq &= 0x0f;
+ if (freq != old_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);
+ }
+ old_width = pci_read_config8(prev->dev, prev->pos + prev->config_off + 1);
+ if (upstream_width != old_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);
+ }
+
+ /* Remember the current link as the previous link */
+ prev->dev = dev;
+ prev->pos = pos;
+ prev->config_off = PCI_HT_CAP_SLAVE_WIDTH1;
+ prev->freq_off = PCI_HT_CAP_SLAVE_FREQ1;
+ prev->freq_cap_off = PCI_HT_CAP_SLAVE_FREQ_CAP1;
+
+ return reset_needed;
+
+}
+
+static unsigned ht_lookup_slave_capability(struct device *dev)
+{
+ unsigned pos;
+ pos = 0;
+ switch(dev->hdr_type & 0x7f) {
+ case PCI_HEADER_TYPE_NORMAL:
+ case PCI_HEADER_TYPE_BRIDGE:
+ pos = PCI_CAPABILITY_LIST;
+ break;
+ }
+ if (pos > PCI_CAP_LIST_NEXT) {
+ pos = pci_read_config8(dev, pos);
+ }
+ while(pos != 0) { /* loop through the linked list */
+ uint8_t cap;
+ cap = pci_read_config8(dev, pos + PCI_CAP_LIST_ID);
+ printk_spew("Capability: 0x%02x @ 0x%02x\n", cap, pos);
+ if (cap == PCI_CAP_ID_HT) {
+ unsigned flags;
+ flags = pci_read_config16(dev, pos + PCI_CAP_FLAGS);
+ printk_spew("flags: 0x%04x\n", (unsigned)flags);
+ if ((flags >> 13) == 0) {
+ /* Entry is a Slave secondary, success...*/
+ break;
+ }
+ }
+ if(pos) {
+ pos = pci_read_config8(dev, pos + PCI_CAP_LIST_NEXT);
+ }
+ }
+ return pos;
+}
+
+static void ht_collapse_early_enumeration(struct bus *bus)
+{
+ unsigned int devfn;
+
+ /* Spin through the devices and collapse any early
+ * hypertransport enumeration.
+ */
+ for(devfn = 0; devfn <= 0xff; devfn += 8) {
+ struct device dummy;
+ uint32_t id;
+ unsigned pos, flags;
+ dummy.bus = bus;
+ dummy.path.type = DEVICE_PATH_PCI;
+ dummy.path.u.pci.devfn = devfn;
+ id = pci_read_config32(&dummy, PCI_VENDOR_ID);
+ if (id == 0xffffffff || id == 0x00000000 ||
+ id == 0x0000ffff || id == 0xffff0000) {
+ continue;
+ }
+ dummy.vendor = id & 0xffff;
+ dummy.device = (id >> 16) & 0xffff;
+ dummy.hdr_type = pci_read_config8(&dummy, PCI_HEADER_TYPE);
+ pos = ht_lookup_slave_capability(&dummy);
+ if (!pos){
+ continue;
+ }
+
+ /* Clear the unitid */
+ 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",
+ dev_path(&dummy), dummy.vendor, dummy.device);
+ }
+}
+
+unsigned int hypertransport_scan_chain(struct bus *bus, unsigned int max)
+{
+ unsigned next_unitid, last_unitid, previous_unitid;
+ uint8_t previous_pos;
+ device_t old_devices, dev, func, *chain_last;
+ unsigned min_unitid = 1;
+ int reset_needed;
+ struct prev_link prev;
+
+ /* Restore the hypertransport chain to it's unitialized state */
+ ht_collapse_early_enumeration(bus);
+
+ /* See which static device nodes I have */
+ old_devices = bus->children;
+ bus->children = 0;
+ chain_last = &bus->children;
+
+ /* Initialize the hypertransport enumeration state */
+ reset_needed = 0;
+ prev.dev = bus->dev;
+ prev.pos = bus->cap;
+ 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;
+ next_unitid = min_unitid;
+ previous_pos = 0;
+ do {
+ uint32_t id, class;
+ uint8_t hdr_type, pos;
+ uint16_t flags;
+ unsigned count, static_count;
+
+ previous_unitid = last_unitid;
+ last_unitid = next_unitid;
+
+ /* Get setup the device_structure */
+ dev = ht_scan_get_devs(&old_devices);
+
+ if (!dev) {
+ struct device dummy;
+ dummy.bus = bus;
+ dummy.path.type = DEVICE_PATH_PCI;
+ dummy.path.u.pci.devfn = 0;
+ id = pci_read_config32(&dummy, PCI_VENDOR_ID);
+ /* If the chain is fully enumerated quit */
+ if (id == 0xffffffff || id == 0x00000000 ||
+ id == 0x0000ffff || id == 0xffff0000) {
+ break;
+ }
+ dev = alloc_dev(bus, &dummy.path);
+ }
+ else {
+ /* Add this device to the pci bus chain */
+ *chain_last = dev;
+ /* Run the magice enable/disable sequence for the device */
+ if (dev->ops && dev->ops->enable) {
+ dev->ops->enable(dev);
+ }
+ /* Now read the vendor and device id */
+ id = pci_read_config32(dev, PCI_VENDOR_ID);
+ }
+ /* Update the device chain tail */
+ for(func = dev; func; func = func->sibling) {
+ chain_last = &func->sibling;
+ }
+
+ /* Read the rest of the pci configuration information */
+ hdr_type = pci_read_config8(dev, PCI_HEADER_TYPE);
+ class = pci_read_config32(dev, PCI_CLASS_REVISION);
+
+ /* Store the interesting information in the device structure */
+ dev->vendor = id & 0xffff;
+ dev->device = (id >> 16) & 0xffff;
+ dev->hdr_type = hdr_type;
+ /* class code, the upper 3 bytes of PCI_CLASS_REVISION */
+ dev->class = class >> 8;
+
+ /* Find the hypertransport link capability */
+ pos = ht_lookup_slave_capability(dev);
+ if (pos == 0) {
+ printk_err("Hypertransport link capability not found");
+ break;
+ }
+
+ /* Update the Unitid of the current device */
+ flags = pci_read_config16(dev, pos + PCI_CAP_FLAGS);
+ flags &= ~0x1f; /* mask out base Unit ID */
+ flags |= next_unitid & 0x1f;
+ pci_write_config16(dev, pos + PCI_CAP_FLAGS, flags);
+
+ /* Update the Unitd id in the device structure */
+ static_count = 1;
+ for(func = dev; func; func = func->sibling) {
+ func->path.u.pci.devfn += (next_unitid << 3);
+ static_count = (func->path.u.pci.devfn >> 3)
+ - (dev->path.u.pci.devfn >> 3) + 1;
+ }
+
+ /* Compute the number of unitids consumed */
+ count = (flags >> 5) & 0x1f; /* get unit count */
+ printk_spew("%s count: %04x static_count: %04x\n",
+ dev_path(dev), count, static_count);
+ if (count < static_count) {
+ count = static_count;
+ }
+
+ /* Update the Unitid of the next device */
+ next_unitid += count;
+
+ /* Setup the hypetransport link */
+ reset_needed |= ht_setup_link(&prev, dev, pos);
+
+ printk_debug("%s [%04x/%04x] %s next_unitid: %04x\n",
+ dev_path(dev),
+ dev->vendor, dev->device,
+ (dev->enable? "enabled": "disabled"), next_unitid);
+
+ } while((last_unitid != next_unitid) && (next_unitid <= 0x1f));
+#if HAVE_HARD_RESET == 1
+ if(reset_needed) {
+ printk_info("HyperT reset needed\n");
+ hard_reset();
+ }
+ printk_debug("HyperT reset not needed\n");
+#endif
+ if (next_unitid > 0x1f) {
+ next_unitid = 0x1f;
+ }
+ return pci_scan_bus(bus, 0x00, (next_unitid << 3)|7, max);
+}
diff --git a/src/devices/pci_device.c b/src/devices/pci_device.c
index 4db0102745..c387f3569f 100644
--- a/src/devices/pci_device.c
+++ b/src/devices/pci_device.c
@@ -496,163 +496,6 @@ static struct device *pci_scan_get_dev(struct device **list, unsigned int devfn)
return dev;
}
-void assign_id_set_links(device_t dev, uint8_t *pos,
- uint8_t *previous_pos, unsigned previous_unitid,
- unsigned last_unitid, int *reset_needed,
- struct device *bus, unsigned *next_unitid)
-{
- static const uint8_t link_width_to_pow2[]= { 3, 4, 0, 5, 1, 2, 0, 0 };
- static const uint8_t pow2_to_link_width[] = { 0x7, 4, 5, 0, 1, 3 };
- uint16_t flags;
- struct bus prev_bus;
- struct device last, previous;
- unsigned count;
- uint8_t present_width_cap;
- uint16_t present_freq_cap;
- uint8_t upstream_width_cap;
- uint16_t upstream_freq_cap;
- uint8_t ln_upstream_width_in, ln_present_width_in;
- uint8_t ln_upstream_width_out, ln_present_width_out;
- uint16_t mask;
- uint8_t freq;
- uint8_t old_freq;
- uint8_t upstream_width, present_width;
- uint8_t old_width;
-
- flags = pci_read_config16(dev, (*pos) + PCI_CAP_FLAGS);
- printk_debug("flags: 0x%04x\n", (unsigned)flags);
- if ((flags >> 13) != 0)
- return; /* Entry is a Host */
- /* Entry is a Slave secondary */
- flags &= ~0x1f; /* mask out base unit ID */
- flags |= *next_unitid & 0x1f; /* assign ID */
- count = (flags >> 5) & 0x1f; /* get unit count */
- printk_debug("unitid: 0x%02x, count: 0x%02x\n",
- *next_unitid, count);
- pci_write_config16(dev, (*pos) + PCI_CAP_FLAGS, flags);
- *next_unitid += count;
- if (previous_unitid == 0) { /* the link is back to the host */
- prev_bus.secondary = 0;
- /* calculate the previous pos for the host */
- *previous_pos = 0x80;
- previous.bus = &prev_bus;
- previous.path.type = DEVICE_PATH_PCI;
- previous.path.u.pci.devfn = 0x18 << 3;
- #warning "FIXME we should not hard code this!"
- } else {
- previous.bus = bus;
- previous.path.type = DEVICE_PATH_PCI;
- previous.path.u.pci.devfn = previous_unitid << 3;
- }
- last.bus = bus;
- last.path.type = DEVICE_PATH_PCI;
- last.path.u.pci.devfn = last_unitid << 3;
- /* Set link width and frequency */
- present_freq_cap = pci_read_config16(&last,
- (*pos) + PCI_HT_CAP_SLAVE_FREQ_CAP0);
- present_width_cap = pci_read_config8(&last,
- (*pos) + PCI_HT_CAP_SLAVE_WIDTH0);
- if(previous_unitid == 0) { /* the link is back to the host */
- upstream_freq_cap = pci_read_config16(&previous,
- (*previous_pos) + PCI_HT_CAP_HOST_FREQ_CAP);
- upstream_width_cap = pci_read_config8(&previous,
- (*previous_pos) + PCI_HT_CAP_HOST_WIDTH);
- }
- else { /* The link is back up the chain */
- upstream_freq_cap = pci_read_config16(&previous,
- (*previous_pos) + PCI_HT_CAP_SLAVE_FREQ_CAP1);
- upstream_width_cap = pci_read_config8(&previous,
- (*previous_pos) + PCI_HT_CAP_SLAVE_WIDTH1);
- }
- /* Calculate the highest possible frequency */
- /* Errata for 8131 - freq 5 has hardware problems don't support it */
- freq = log2(present_freq_cap & upstream_freq_cap & 0x1f);
-
- /* Calculate the highest width */
- ln_upstream_width_in = link_width_to_pow2[upstream_width_cap & 7];
- ln_present_width_out = link_width_to_pow2[(present_width_cap >> 4) & 7];
- if (ln_upstream_width_in > ln_present_width_out) {
- ln_upstream_width_in = ln_present_width_out;
- }
- upstream_width = pow2_to_link_width[ln_upstream_width_in];
- present_width = pow2_to_link_width[ln_upstream_width_in] << 4;
-
- ln_upstream_width_out = link_width_to_pow2[(upstream_width_cap >> 4) & 7];
- ln_present_width_in = link_width_to_pow2[present_width_cap & 7];
- if (ln_upstream_width_out > ln_present_width_in) {
- ln_upstream_width_out = ln_present_width_in;
- }
- upstream_width |= pow2_to_link_width[ln_upstream_width_out] << 4;
- present_width |= pow2_to_link_width[ln_upstream_width_out];
-
- /* set the present device */
- old_freq = pci_read_config8(&last, (*pos) + PCI_HT_CAP_SLAVE_FREQ0);
- if(old_freq != freq) {
- pci_write_config8(&last,
- (*pos) + PCI_HT_CAP_SLAVE_FREQ0, freq);
- *reset_needed = 1;
- printk_debug("HyperT FreqP old %x new %x\n",old_freq,freq);
- }
- old_width = pci_read_config8(&last,
- (*pos) + PCI_HT_CAP_SLAVE_WIDTH0 + 1);
- if(present_width != old_width) {
- pci_write_config8(&last,
- (*pos) + PCI_HT_CAP_SLAVE_WIDTH0 + 1, present_width);
- *reset_needed = 1;
- printk_debug("HyperT widthP old %x new %x\n",
- old_width, present_width);
- }
- /* set the upstream device */
- if(previous_unitid == 0) { /* the link is back to the host */
- old_freq = pci_read_config8(&previous,
- (*previous_pos) + PCI_HT_CAP_HOST_FREQ);
- old_freq &= 0x0f;
- if(freq != old_freq) {
- pci_write_config8(&previous,
- (*previous_pos) + PCI_HT_CAP_HOST_FREQ, freq);
- *reset_needed = 1;
- printk_debug("HyperT freqUH old %x new %x\n",
- old_freq, freq);
- }
- old_width = pci_read_config8(&previous,
- (*previous_pos) + PCI_HT_CAP_HOST_WIDTH + 1);
- if(upstream_width != old_width) {
- pci_write_config8(&previous,
- (*previous_pos) + PCI_HT_CAP_HOST_WIDTH + 1,
- upstream_width);
- *reset_needed = 1;
- printk_debug("HyperT widthUH old %x new %x\n",
- old_width, upstream_width);
- }
- }
- else { /* The link is back up the chain */
- old_freq = pci_read_config8(&previous,
- (*previous_pos) + PCI_HT_CAP_SLAVE_FREQ1);
- old_freq &= 0x0f;
- if(freq != old_freq) {
- pci_write_config8(&previous,
- (*previous_pos) + PCI_HT_CAP_SLAVE_FREQ1,
- freq);
- *reset_needed = 1;
- printk_debug("HyperT freqUL old %x new %x\n",
- old_freq, freq);
- }
- old_width = pci_read_config8(&previous,
- (*previous_pos) + PCI_HT_CAP_SLAVE_WIDTH1 + 1);
- if(upstream_width != old_width) {
- pci_write_config8(&previous,
- (*previous_pos) + PCI_HT_CAP_SLAVE_WIDTH1,
- upstream_width);
- *reset_needed = 1;
- printk_debug("HyperT widthUL old %x new %x\n",
- old_width, upstream_width);
- }
- }
- *previous_pos = *pos;
- *pos=0;
-}
-
-#define HYPERTRANSPORT_SUPPORT 1
/** Scan the pci bus devices and bridges.
* @param bus pointer to the bus structure
* @param min_devfn minimum devfn to look at in the scan usually 0x00
@@ -668,11 +511,6 @@ unsigned int pci_scan_bus(struct bus *bus,
device_t dev;
device_t old_devices;
device_t child;
-#if HYPERTRANSPORT_SUPPORT
- unsigned next_unitid, last_unitid, previous_unitid;
- int reset_needed = 0;
- uint8_t previous_pos;
-#endif
printk_debug("PCI: pci_scan_bus for bus %d\n", bus->secondary);
@@ -682,112 +520,6 @@ unsigned int pci_scan_bus(struct bus *bus,
post_code(0x24);
-#if HYPERTRANSPORT_SUPPORT
- /* Spin through the devices and collapse any early
- * hypertransport enumeration.
- */
- for(devfn = min_devfn; devfn <= max_devfn; devfn += 8) {
- struct device dummy;
- uint32_t id;
- uint8_t hdr_type, pos;
- dummy.bus = bus;
- dummy.path.type = DEVICE_PATH_PCI;
- dummy.path.u.pci.devfn = devfn;
- id = pci_read_config32(&dummy, PCI_VENDOR_ID);
- if ( (id == 0xffffffff) || (id == 0x00000000) ||
- (id == 0x0000ffff) || (id == 0xffff0000)) {
- continue;
- }
- hdr_type = pci_read_config8(&dummy, PCI_HEADER_TYPE);
- pos = 0;
- switch(hdr_type & 0x7f) {
- case PCI_HEADER_TYPE_NORMAL:
- case PCI_HEADER_TYPE_BRIDGE:
- pos = PCI_CAPABILITY_LIST;
- break;
- }
- if (pos > PCI_CAP_LIST_NEXT) {
- pos = pci_read_config8(&dummy, pos);
- }
- while(pos != 0) {
- uint8_t cap;
- cap = pci_read_config8(&dummy, pos + PCI_CAP_LIST_ID);
- printk_debug("Capability: 0x%02x @ 0x%02x\n", cap, pos);
- if (cap == PCI_CAP_ID_HT) {
- uint16_t flags;
- flags = pci_read_config16(&dummy,
- pos + PCI_CAP_FLAGS);
- printk_debug("flags: 0x%04x\n",
- (unsigned)flags);
- if ((flags >> 13) == 0) {
- /* Clear the unitid */
- flags &= ~0x1f;
- pci_write_config16(&dummy,
- pos + PCI_CAP_FLAGS, flags);
- break;
- }
- }
- pos = pci_read_config8(&dummy, pos + PCI_CAP_LIST_NEXT);
- }
- }
- /* If present assign unitid to a hypertransport chain */
- last_unitid = 0;
- next_unitid = 1;
- previous_pos = 0;
- do {
- struct device dummy;
- uint32_t id;
- uint8_t hdr_type, pos;
-
- previous_unitid = last_unitid;
- last_unitid = next_unitid;
-
- /* Read the next unassigned device off the stack */
- dummy.bus = bus;
- dummy.path.type = DEVICE_PATH_PCI;
- dummy.path.u.pci.devfn = 0;
- id = pci_read_config32(&dummy, PCI_VENDOR_ID);
- /* If the chain is enumerated quit */
- if (id == 0xffffffff || id == 0x00000000 ||
- id == 0x0000ffff || id == 0xffff0000) {
- break;
- }
- hdr_type = pci_read_config8(&dummy, PCI_HEADER_TYPE);
- pos = 0;
- switch(hdr_type & 0x7f) {
- case PCI_HEADER_TYPE_NORMAL:
- case PCI_HEADER_TYPE_BRIDGE:
- pos = PCI_CAPABILITY_LIST;
- break;
- }
- if (pos > PCI_CAP_LIST_NEXT) {
- pos = pci_read_config8(&dummy, pos);
- }
- while(pos != 0) { /* loop through the linked list */
- uint8_t cap;
- cap = pci_read_config8(&dummy, pos + PCI_CAP_LIST_ID);
- printk_debug("Capability: 0x%02x @ 0x%02x\n", cap, pos);
- if (cap == PCI_CAP_ID_HT) {
- assign_id_set_links(&dummy,&pos,&previous_pos,
- previous_unitid, last_unitid,
- &reset_needed, bus,
- &next_unitid);
- }
- if(pos)
- pos = pci_read_config8(&dummy,
- pos + PCI_CAP_LIST_NEXT);
- }
- } while((last_unitid != next_unitid) && (next_unitid <= 0x1f));
-#if HAVE_HARD_RESET == 1
- if(reset_needed) {
- printk_debug("HyperT reset needed\n");
- boot_successful();
- hard_reset();
- }
- printk_debug("HyperT reset not needed\n");
-#endif /* HAVE_HARD_RESET */
-#endif /* HYPERTRANSPORT_SUPPORT */
-
/* probe all devices on this bus with some optimization for non-existance and
single funcion devices */
for (devfn = min_devfn; devfn <= max_devfn; devfn++) {
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-05 14:44:02 +0000