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

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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9
src/boot/hardwaremain.c
View File

@ -37,6 +37,15 @@ it with the version available from LANL.
#include <part/init_timer.h>
#include <boot/elf.h>
/**
* @brief Main function of the DRAM part of LinuxBIOS.
*
* LinuxBIOS is divided into Pre-DRAM part and DRAM part.
*
*
* Device Enumeration:
* In the dev_enumerate() phase,
*/
void hardwaremain(int boot_complete)
{
struct lb_memory *lb_mem;

30
src/devices/device.c
View File

@ -56,10 +56,12 @@ device_t alloc_dev(struct bus *parent, struct device_path *path)
int link;
spin_lock(&dev_lock);
/* Find the last child of our parent */
for(child = parent->children; child && child->sibling; ) {
for (child = parent->children; child && child->sibling; ) {
child = child->sibling;
}
dev = malloc(sizeof(*dev));
if (dev == 0) {
die("DEV: out of memory.\n");
@ -67,9 +69,8 @@ device_t alloc_dev(struct bus *parent, struct device_path *path)
memset(dev, 0, sizeof(*dev));
memcpy(&dev->path, path, sizeof(*path));
/* Initialize the back pointers in the link fields */
for(link = 0; link < MAX_LINKS; link++) {
for (link = 0; link < MAX_LINKS; link++) {
dev->link[link].dev = dev;
dev->link[link].link = link;
}
@ -121,7 +122,7 @@ static void read_resources(struct bus *bus)
dev_path(bus->dev), bus->secondary, bus->link);
/* Walk through all of the devices and find which resources they need. */
for(curdev = bus->children; curdev; curdev = curdev->sibling) {
for (curdev = bus->children; curdev; curdev = curdev->sibling) {
unsigned links;
int i;
if (curdev->have_resources) {
@ -139,7 +140,7 @@ static void read_resources(struct bus *bus)
curdev->have_resources = 1;
/* Read in subtractive resources behind the current device */
links = 0;
for(i = 0; i < curdev->resources; i++) {
for (i = 0; i < curdev->resources; i++) {
struct resource *resource;
unsigned link;
resource = &curdev->resource[i];
@ -262,7 +263,6 @@ void compute_allocate_resource(
(bridge->flags & IORESOURCE_PREFETCH)? "prefmem" : "mem",
base, bridge->size, bridge->align, bridge->gran);
/* We want different minimum alignments for different kinds of
* resources. These minimums are not device type specific
* but resource type specific.
@ -283,14 +283,13 @@ void compute_allocate_resource(
/* Walk through all the devices on the current bus and
* compute the addresses.
*/
while((dev = largest_resource(bus, &resource, type_mask, type))) {
while ((dev = largest_resource(bus, &resource, type_mask, type))) {
resource_t size;
/* Do NOT I repeat do not ignore resources which have zero size.
* If they need to be ignored dev->read_resources should not even
* return them. Some resources must be set even when they have
* no size. PCI bridge resources are a good example of this.
*/
/* Propogate the resource alignment to the bridge register */
if (resource->align > bridge->align) {
bridge->align = resource->align;
@ -339,8 +338,7 @@ void compute_allocate_resource(
resource->flags &= ~IORESOURCE_STORED;
base += size;
printk_spew(
"%s %02x * [0x%08Lx - 0x%08Lx] %s\n",
printk_spew("%s %02x * [0x%08Lx - 0x%08Lx] %s\n",
dev_path(dev),
resource->index,
resource->base,
@ -380,10 +378,6 @@ static void allocate_vga_resource(void)
if (((dev->class >> 16) == PCI_BASE_CLASS_DISPLAY) &&
((dev->class >> 8) != PCI_CLASS_DISPLAY_OTHER)) {
if (!vga) {
printk_debug("Allocating VGA resource %s\n",
dev_path(dev));
printk_debug("parent of the vga device %s\n",
dev_path(dev->bus->dev));
vga = dev;
}
if (vga == dev) {
@ -400,8 +394,6 @@ static void allocate_vga_resource(void)
}
/* Now walk up the bridges setting the VGA enable */
while (bus) {
printk_info("Enabling VGA forward on bus connect to %s\n",
dev_path(bus->dev));
bus->bridge_ctrl |= PCI_BRIDGE_CTL_VGA;
bus = (bus == bus->dev->bus)? 0 : bus->dev->bus;
}
@ -545,7 +537,7 @@ void dev_configure(void)
printk_info("Reading resources...\n");
root->ops->read_resources(root);
printk_info("Done\n");
printk_info("Done reading resources.\n");
/* Get the resources */
io = &root->resource[0];
@ -567,13 +559,13 @@ void dev_configure(void)
/* Store the computed resource allocations into device registers ... */
printk_info("Setting resources...\n");
root->ops->set_resources(root);
printk_info("Done\n");
printk_info("Done setting resources.\n");
#if 0
mem->flags |= IORESOURCE_STORED;
report_resource_stored(root, mem, "");
#endif
printk_info("done.\n");
printk_info("Done allocating resources.\n");
}
/**

19
src/devices/pci_device.c
View File

@ -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)
{
@ -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;

3
src/devices/root_device.c
View File

@ -89,8 +89,7 @@ unsigned int scan_static_bus(device_t root, unsigned int max)
if (child->ops && child->ops->enable) {
child->ops->enable(child);
}
printk_debug("%s %s\n",
dev_path(child),
printk_debug("%s %s\n", dev_path(child),
child->enabled?"enabled": "disabled");
}
}

74
src/northbridge/amd/amdk8/northbridge.c
View File

@ -22,7 +22,7 @@ static device_t __f1_dev[FX_DEVS];
static void debug_fx_devs(void)
{
int i;
for(i = 0; i < FX_DEVS; i++) {
for (i = 0; i < FX_DEVS; i++) {
device_t dev;
dev = __f0_dev[i];
if (dev) {
@ -44,7 +44,7 @@ static void get_fx_devs(void)
if (__f1_dev[0]) {
return;
}
for(i = 0; i < FX_DEVS; i++) {
for (i = 0; i < FX_DEVS; i++) {
__f0_dev[i] = dev_find_slot(0, PCI_DEVFN(0x18 + i, 0));
__f1_dev[i] = dev_find_slot(0, PCI_DEVFN(0x18 + i, 1));
}
@ -63,7 +63,7 @@ static void f1_write_config32(unsigned reg, uint32_t value)
{
int i;
get_fx_devs();
for(i = 0; i < FX_DEVS; i++) {
for (i = 0; i < FX_DEVS; i++) {
device_t dev;
dev = __f1_dev[i];
if (dev && dev->enabled) {
@ -86,7 +86,7 @@ static unsigned int amdk8_scan_chains(device_t dev, unsigned int max)
printk_debug("%s amdk8_scan_chains max: %d starting...\n",
dev_path(dev), max);
#endif
for(link = 0; link < dev->links; link++) {
for (link = 0; link < dev->links; link++) {
uint32_t link_type;
uint32_t busses, config_busses;
unsigned free_reg, config_reg;
@ -103,9 +103,10 @@ static unsigned int amdk8_scan_chains(device_t dev, unsigned int max)
if (!(link_type & NonCoherent)) {
continue;
}
/* See if there is an available configuration space mapping register in function 1. */
/* See if there is an available configuration space mapping
* register in function 1. */
free_reg = 0;
for(config_reg = 0xe0; config_reg <= 0xec; config_reg += 4) {
for (config_reg = 0xe0; config_reg <= 0xec; config_reg += 4) {
uint32_t config;
config = f1_read_config32(config_reg);
if (!free_reg && ((config & 3) == 0)) {
@ -121,14 +122,15 @@ static unsigned int amdk8_scan_chains(device_t dev, unsigned int max)
if (free_reg && (config_reg > 0xec)) {
config_reg = free_reg;
}
/* If we can't find an available configuration space mapping register skip this bus */
/* If we can't find an available configuration space mapping
* register skip this bus */
if (config_reg > 0xec) {
continue;
}
/* Set up the primary, secondary and subordinate bus numbers. We have
* no idea how many busses are behind this bridge yet, so we set the subordinate
* bus number to 0xff for the moment.
/* Set up the primary, secondary and subordinate bus numbers.
* We have no idea how many busses are behind this bridge yet,
* so we set the subordinate bus number to 0xff for the moment.
*/
dev->link[link].secondary = ++max;
dev->link[link].subordinate = 0xff;
@ -140,8 +142,8 @@ static unsigned int amdk8_scan_chains(device_t dev, unsigned int max)
config_busses = f1_read_config32(config_reg);
/* Configure the bus numbers for this bridge: the configuration
* transactions will not be propagates by the bridge if it is not
* correctly configured
* transactions will not be propagates by the bridge if it is
* not correctly configured
*/
busses &= 0xff000000;
busses |= (((unsigned int)(dev->bus->secondary) << 0) |
@ -162,7 +164,8 @@ static unsigned int amdk8_scan_chains(device_t dev, unsigned int max)
printk_debug("%s Hyper transport scan link: %d max: %d\n",
dev_path(dev), link, max);
#endif
/* Now we can scan all of the subordinate busses i.e. the chain on the hypertranport link */
/* Now we can scan all of the subordinate busses i.e. the
* chain on the hypertranport link */
max = hypertransport_scan_chain(&dev->link[link], max);
#if 0
@ -170,15 +173,16 @@ static unsigned int amdk8_scan_chains(device_t dev, unsigned int max)
dev_path(dev), link, max);
#endif
/* We know the number of busses behind this bridge. Set the subordinate
* bus number to it's real value
/* We know the number of busses behind this bridge. Set the
* subordinate bus number to it's real value
*/
dev->link[link].subordinate = max;
busses = (busses & 0xff00ffff) |
((unsigned int) (dev->link[link].subordinate) << 16);
pci_write_config32(dev, dev->link[link].cap + 0x14, busses);
config_busses = (config_busses & 0x00ffffff) | (dev->link[link].subordinate << 24);
config_busses = (config_busses & 0x00ffffff) |
(dev->link[link].subordinate << 24);
f1_write_config32(config_reg, config_busses);
#if 0
printk_debug("%s Hypertransport scan link: %d done\n",
@ -199,17 +203,17 @@ static int reg_useable(unsigned reg,
unsigned nodeid, link;
int result;
res = 0;
for(nodeid = 0; !res && (nodeid < 8); nodeid++) {
for (nodeid = 0; !res && (nodeid < 8); nodeid++) {
device_t dev;
dev = __f0_dev[nodeid];
for(link = 0; !res && (link < 3); link++) {
for (link = 0; !res && (link < 3); link++) {
res = probe_resource(dev, 0x100 + (reg | link));
}
}
result = 2;
if (res) {
result = 0;
if ( (goal_link == (link - 1)) &&
if ((goal_link == (link - 1)) &&
(goal_nodeid == (nodeid - 1)) &&
(res->flags <= 1)) {
result = 1;
@ -224,14 +228,13 @@ static int reg_useable(unsigned reg,
return result;
}
static struct resource *amdk8_find_iopair(device_t dev, unsigned nodeid, unsigned link)
{
struct resource *resource;
unsigned free_reg, reg;
resource = 0;
free_reg = 0;
for(reg = 0xc0; reg <= 0xd8; reg += 0x8) {
for (reg = 0xc0; reg <= 0xd8; reg += 0x8) {
int result;
result = reg_useable(reg, dev, nodeid, link);
if (result == 1) {
@ -258,7 +261,7 @@ static struct resource *amdk8_find_mempair(device_t dev, unsigned nodeid, unsign
unsigned free_reg, reg;
resource = 0;
free_reg = 0;
for(reg = 0x80; reg <= 0xb8; reg += 0x8) {
for (reg = 0x80; reg <= 0xb8; reg += 0x8) {
int result;
result = reg_useable(reg, dev, nodeid, link);
if (result == 1) {
@ -278,6 +281,7 @@ static struct resource *amdk8_find_mempair(device_t dev, unsigned nodeid, unsign
}
return resource;
}
static void amdk8_link_read_bases(device_t dev, unsigned nodeid, unsigned link)
{
struct resource *resource;
@ -328,7 +332,7 @@ static void amdk8_read_resources(device_t dev)
{
unsigned nodeid, link;
nodeid = amdk8_nodeid(dev);
for(link = 0; link < dev->links; link++) {
for (link = 0; link < dev->links; link++) {
if (dev->link[link].children) {
amdk8_link_read_bases(dev, nodeid, link);
}
@ -416,6 +420,26 @@ static void amdk8_set_resource(device_t dev, struct resource *resource, unsigned
report_resource_stored(dev, resource, buf);
}
static void amdk8_create_vga_resource(device_t dev, unsigned nodeid)
{
struct resource *resource;
unsigned link;
for (link = 0; link < dev->links; link++) {
if (dev->link[link].bridge_ctrl & PCI_BRIDGE_CTL_VGA) {
printk_info("%s: bridge on link %d has VGA device\n",
dev_path(dev), link);
printk_info("creating MEM pair for VGA memory\n");
/* Initialize the io space constraints on the current bus */
resource = amdk8_find_mempair(dev, nodeid, link);
printk_info("MEM pair register %x\n", resource->index - 0x100);
resource->base = 0xa0000;
resource->size = 0x00000;
resource->gran = 16;
resource->align = 16;
resource->flags = IORESOURCE_PREFETCH | IORESOURCE_MEM | IORESOURCE_FIXED | IORESOURCE_ASSIGNED;
}
}
}
static void amdk8_set_resources(device_t dev)
{
unsigned nodeid, link;
@ -424,8 +448,10 @@ static void amdk8_set_resources(device_t dev)
/* Find the nodeid */
nodeid = amdk8_nodeid(dev);
amdk8_create_vga_resource(dev, nodeid);
/* Set each resource we have found */
for(i = 0; i < dev->resources; i++) {
for (i = 0; i < dev->resources; i++) {
amdk8_set_resource(dev, &dev->resource[i], nodeid);
}

3
src/southbridge/amd/amd8111/amd8111_lpc.c
View File

@ -176,15 +176,16 @@ static void amd8111_lpc_enable_resources(device_t dev)
enable_childrens_resources(dev);
}
static void lpci_set_subsystem(device_t dev, unsigned vendor, unsigned device)
{
pci_write_config32(dev, 0x70,
((device & 0xffff) << 16) | (vendor & 0xffff));
}
static struct pci_operations lops_pci = {
.set_subsystem = lpci_set_subsystem,
};
static struct device_operations lpc_ops = {
.read_resources = amd8111_lpc_read_resources,
.set_resources = pci_dev_set_resources,