summaryrefslogtreecommitdiff
path: root/src/devices/pci_device.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/devices/pci_device.c')
-rw-r--r--src/devices/pci_device.c268
1 files changed, 0 insertions, 268 deletions
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 2025-02-19 08:35:45 +0000