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#include <console/console.h>
#include <arch/io.h>
#include <stdint.h>
#include <device/device.h>
#include <device/pci.h>
#include <device/hypertransport.h>
#include <stdlib.h>
#include <string.h>
#include <bitops.h>
#include "chip.h"
#include "northbridge.h"
void hard_reset(void)
{
printk_err("Hard_RESET!!!\n");
}
#define BRIDGE_IO_MASK (IORESOURCE_IO | IORESOURCE_MEM)
static void pci_domain_read_resources(device_t dev)
{
struct resource *resource;
unsigned reg;
/* Initialize the system wide io space constraints */
resource = new_resource(dev, 0);
resource->base = 0x400;
resource->limit = 0xffffUL;
resource->flags = IORESOURCE_IO;
compute_allocate_resource(&dev->link[0], resource,
IORESOURCE_IO, IORESOURCE_IO);
/* Initialize the system wide memory resources constraints */
resource = new_resource(dev, 1);
resource->limit = 0xffffffffULL;
resource->flags = IORESOURCE_MEM;
compute_allocate_resource(&dev->link[0], resource,
IORESOURCE_MEM, IORESOURCE_MEM);
}
static void pci_domain_set_resources(device_t dev)
{
struct resource *resource, *last;
device_t mc_dev;
uint32_t pci_tolm;
pci_tolm = 0xffffffffUL;
last = &dev->resource[dev->resources];
for(resource = &dev->resource[0]; resource < last; resource++)
{
compute_allocate_resource(&dev->link[0], resource,
BRIDGE_IO_MASK, resource->flags & BRIDGE_IO_MASK);
resource->flags |= IORESOURCE_STORED;
report_resource_stored(dev, resource, "");
if ((resource->flags & IORESOURCE_MEM) &&
(pci_tolm > resource->base))
{
pci_tolm = resource->base;
}
}
mc_dev = dev->link[0].children;
if (mc_dev) {
unsigned long tomk, tolmk;
/* Hard code the Top of memory for now */
tomk = 65536;
/* Compute the top of Low memory */
tolmk = pci_tolm >> 10;
if (tolmk >= tomk) {
/* The PCI hole does not overlap memory.
*/
tolmk = tomk;
}
/* Report the memory regions */
idx = 10;
ram_resource(dev, idx++, 0, 640);
ram_resource(dev, idx++, 768, tolmk - 768);
if (tomk > 4*1024*1024) {
ram_resource(dev, idx++, 4096*1024, tomk - 4*1024*1024);
}
}
assign_resources(&dev->link[0]);
}
static unsigned int pci_domain_scan_bus(device_t dev, unsigned int max)
{
max = pci_scan_bus(&dev->link[0], PCI_DEVFN(0, 0), 0xff, max);
return max;
}
static struct device_operations pci_domain_ops = {
.read_resources = pci_domain_read_resources,
.set_resources = pci_domain_set_resources,
.enable_resources = enable_childrens_resources,
.init = 0,
.scan_bus = pci_domain_scan_bus,
};
static void enable_dev(struct device *dev)
{
struct device_path path;
/* Set the operations if it is a special bus type */
if (dev->path.type == DEVICE_PATH_PCI_DOMAIN) {
dev->ops = &pci_domain_ops;
}
}
struct chip_operations northbridge_emulation_qemu_i386_control = {
.name = "QEMU Northbridge",
.enable_dev = enable_dev,
};
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