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- Small step forward Linux boots and almost works...

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git-svn-id: svn://svn.coreboot.org/coreboot/trunk@795 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
Eric Biederman
2003-04-24 06:25:08 +00:00
parent 8ca8d7665d
commit 5899fd82aa
17 changed files with 3024 additions and 22 deletions
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80
src/devices/pci_device.c
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@@ -13,9 +13,10 @@
#include <stdlib.h>
#include <stdint.h>
#include <bitops.h>
#include <pci.h>
#include <pci_ids.h>
#include <string.h>
#include <device/device.h>
#include <device/pci.h>
#include <device/pci_ids.h>
static unsigned int pci_scan_bridge(struct device *bus, unsigned int max);
@@ -219,7 +220,7 @@ static void pci_bridge_read_bases(struct device *dev)
}
static void pci_dev_read_resources(struct device *dev)
void pci_dev_read_resources(struct device *dev)
{
uint32_t addr;
dev->resources = 0;
@@ -229,7 +230,7 @@ static void pci_dev_read_resources(struct device *dev)
dev->rom_address = (addr == 0xffffffff)? 0 : addr;
}
static void pci_bus_read_resources(struct device *dev)
void pci_bus_read_resources(struct device *dev)
{
uint32_t addr;
dev->resources = 0;
@@ -345,7 +346,7 @@ static void pci_set_resource(struct device *dev, struct resource *resource)
return;
}
static void pci_dev_set_resources(struct device *dev)
void pci_dev_set_resources(struct device *dev)
{
struct resource *resource, *last;
uint8_t line;
@@ -399,9 +400,16 @@ static void set_pci_ops(struct device *dev)
*/
for(driver = &pci_drivers[0]; driver != &epci_drivers[0]; driver++) {
if ((driver->vendor == dev->vendor) &&
(driver->device = dev->device)) {
(driver->device == dev->device)) {
dev->ops = driver->ops;
break;
#if 1
printk_debug("PCI: %02x:%02x.%01x [%04x/%04x] ops\n",
dev->bus->secondary,
PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn),
driver->vendor, driver->device
);
#endif
return;
}
}
/* If I don't have a specific driver use the default operations */
@@ -450,6 +458,7 @@ static struct device *pci_scan_get_dev(struct device **list, unsigned int devfn)
}
#define HYPERTRANSPORT_SUPPORT 1
/** Scan the pci bus devices and bridges.
* @param pci_bus pointer to the bus structure
* @param max current bus number
@@ -461,6 +470,9 @@ unsigned int pci_scan_bus(struct device *bus, unsigned int max)
struct device *dev, **bus_last;
struct device *old_devices;
struct device *child;
#if HYPERTRANSPORT_SUPPORT
unsigned next_unitid, last_unitid;
#endif
printk_debug("PCI: pci_scan_bus for bus %d\n", bus->secondary);
@@ -471,6 +483,58 @@ unsigned int pci_scan_bus(struct device *bus, unsigned int max)
post_code(0x24);
#if HYPERTRANSPORT_SUPPORT
/* If present assign unitid to a hypertransport chain */
next_unitid = 1;
do {
struct device dummy;
uint32_t id;
uint8_t hdr_type, pos;
last_unitid = next_unitid;
dummy.bus = bus;
dummy.devfn = 0;
pci_read_config_dword(&dummy, PCI_VENDOR_ID, &id);
if (id == 0xffffffff || id == 0x00000000 ||
id == 0x0000ffff || id == 0xffff0000) {
break;
}
pci_read_config_byte(&dummy, PCI_HEADER_TYPE, &hdr_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) {
pci_read_config_byte(&dummy, pos, &pos);
}
while(pos != 0) {
uint8_t cap;
pci_read_config_byte(&dummy, pos + PCI_CAP_LIST_ID, &cap);
printk_debug("Capability: 0x%02x @ 0x%02x\n", cap, pos);
if (cap == PCI_CAP_ID_HT) {
uint16_t flags;
pci_read_config_word(&dummy, pos + PCI_CAP_FLAGS, &flags);
printk_debug("flags: 0x%04x\n", (unsigned)flags);
if ((flags >> 13) == 0) {
unsigned count;
flags &= ~0x1f;
flags |= next_unitid & 0x1f;
count = (flags >> 5) & 0x1f;
printk_debug("unitid: 0x%02x, count: 0x%02x\n",
next_unitid, count);
pci_write_config_word(&dummy, pos + PCI_CAP_FLAGS, flags);
next_unitid += count;
break;
}
}
pci_read_config_byte(&dummy, pos + PCI_CAP_LIST_NEXT, &pos);
}
} while((last_unitid != next_unitid) && (next_unitid <= 0x1f));
#endif /* HYPERTRANSPORT_SUPPORT */
/* probe all devices on this bus with some optimization for non-existance and
single funcion devices */
for (devfn = 0; devfn < 0xff; devfn++) {
@@ -575,7 +639,7 @@ unsigned int pci_scan_bus(struct device *bus, unsigned int max)
* @param pci_bus pointer to the bus structure
* @return The maximum bus number found, after scanning all subordinate busses
*/
static unsigned int pci_scan_bridge(struct device *bus, unsigned int max)
unsigned int pci_scan_bridge(struct device *bus, unsigned int max)
{
uint32_t buses;
uint16_t cr;