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allocating resource for legacy VGA frame buffer, it is not 100%

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correct but it works anyway.


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@1811 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
Li-Ta Lo
2004-12-03 22:39:34 +00:00
parent 845e8df673
commit 3a81285409
6 changed files with 131 additions and 101 deletions
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33
src/devices/pci_device.c
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@@ -117,7 +117,7 @@ struct resource *pci_get_resource(struct device *dev, unsigned long index)
/* If it is a 64bit resource look at the high half as well */
if (((attr & PCI_BASE_ADDRESS_SPACE_IO) == 0) &&
((attr & PCI_BASE_ADDRESS_MEM_LIMIT_MASK) == PCI_BASE_ADDRESS_MEM_LIMIT_64))
((attr & PCI_BASE_ADDRESS_MEM_LIMIT_MASK) == PCI_BASE_ADDRESS_MEM_LIMIT_64))
{
/* Find the high bits that move */
moving |= ((resource_t)pci_moving_config32(dev, index + 4)) << 32;
@@ -611,13 +611,14 @@ static void set_pci_ops(struct device *dev)
* @brief See if we have already allocated a device structure for a given devfn.
*
* Given a linked list of PCI device structures and a devfn number, find the
* device structure correspond to the devfn, if present.
* device structure correspond to the devfn, if present. This function also
* removes the device structure from the linked list.
*
* @param list the device structure list
* @param devfn a device/function number
*
* @return pointer to the device structure found or null of we have not allocated
* a device for this devfn yet.
* @return pointer to the device structure found or null of we have not
* allocated a device for this devfn yet.
*/
static struct device *pci_scan_get_dev(struct device **list, unsigned int devfn)
{
@@ -626,7 +627,7 @@ static struct device *pci_scan_get_dev(struct device **list, unsigned int devfn)
for(; *list; list = &(*list)->sibling) {
if ((*list)->path.type != DEVICE_PATH_PCI) {
printk_err("child %s not a pci device\n",
dev_path(*list));
dev_path(*list));
continue;
}
if ((*list)->path.u.pci.devfn == devfn) {
@@ -637,15 +638,15 @@ static struct device *pci_scan_get_dev(struct device **list, unsigned int devfn)
break;
}
}
/* Just like alloc_dev add the device to the
* list of device on the bus. When the list of devices was formed
* we removed all of the parents children, and now we are interleaving
* static and dynamic devices in order on the bus.
/* Just like alloc_dev add the device to the list of device on the bus.
* When the list of devices was formed we removed all of the parents
* children, and now we are interleaving static and dynamic devices in
* order on the bus.
*/
if (dev) {
device_t child;
/* Find the last child of our parent */
for(child = dev->bus->children; child && child->sibling; ) {
for (child = dev->bus->children; child && child->sibling; ) {
child = child->sibling;
}
/* Place the device on the list of children of it's parent. */
@@ -854,6 +855,8 @@ unsigned int pci_scan_bridge(struct device *dev, unsigned int max)
uint32_t buses;
uint16_t cr;
printk_spew("%s for %s\n", __func__, dev_path(dev));
bus = &dev->link[0];
bus->dev = dev;
dev->links = 1;
@@ -882,15 +885,15 @@ unsigned int pci_scan_bridge(struct device *dev, unsigned int max)
*/
buses &= 0xff000000;
buses |= (((unsigned int) (dev->bus->secondary) << 0) |
((unsigned int) (bus->secondary) << 8) |
((unsigned int) (bus->subordinate) << 16));
((unsigned int) (bus->secondary) << 8) |
((unsigned int) (bus->subordinate) << 16));
pci_write_config32(dev, PCI_PRIMARY_BUS, buses);
/* Now we can scan all subordinate buses
* i.e. the bus behind the bridge.
*/
max = pci_scan_bus(bus, 0x00, 0xff, max);
/* We know the number of buses behind this bridge. Set the subordinate
* bus number to its real value.
*/
@@ -899,7 +902,7 @@ unsigned int pci_scan_bridge(struct device *dev, unsigned int max)
((unsigned int) (bus->subordinate) << 16);
pci_write_config32(dev, PCI_PRIMARY_BUS, buses);
pci_write_config16(dev, PCI_COMMAND, cr);
printk_spew("%s returns max %d\n", __func__, max);
return max;
}