#include "northbridge.h"
#include "amdk8.h"
-#define DEVICE_MEM_HIGH 0xFEC00000ULL /* Reserve 20M for the system */
-#define DEVICE_IO_START 0x1000
-
#define FX_DEVS 8
static device_t __f0_dev[FX_DEVS];
static device_t __f1_dev[FX_DEVS];
cmd |= 0x00000600;
pci_write_config32(dev, 0xdc, cmd );
#endif
+#if 0
printk_debug("done.\n");
+#endif
}
static struct device_operations northbridge_operations = {
};
-#define BRIDGE_IO_MASK (IORESOURCE_IO | IORESOURCE_MEM | IORESOURCE_PREFETCH)
-
static void pci_domain_read_resources(device_t dev)
{
struct resource *resource;
}
/* Initialize the system wide io space constraints */
- resource = new_resource(dev, 0);
+ resource = new_resource(dev, IOINDEX_SUBTRACTIVE(0, 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 prefetchable memory resources constraints */
- resource = new_resource(dev, 1);
- resource->limit = 0xfcffffffffULL;
- resource->flags = IORESOURCE_MEM | IORESOURCE_PREFETCH;
- compute_allocate_resource(&dev->link[0], resource,
- IORESOURCE_MEM | IORESOURCE_PREFETCH,
- IORESOURCE_MEM | IORESOURCE_PREFETCH);
+ resource->flags = IORESOURCE_IO | IORESOURCE_SUBTRACTIVE | IORESOURCE_ASSIGNED;
/* Initialize the system wide memory resources constraints */
- resource = new_resource(dev, 2);
+ resource = new_resource(dev, IOINDEX_SUBTRACTIVE(1, 0));
resource->limit = 0xfcffffffffULL;
- resource->flags = IORESOURCE_MEM;
- compute_allocate_resource(&dev->link[0], resource,
- IORESOURCE_MEM | IORESOURCE_PREFETCH,
- IORESOURCE_MEM);
+ resource->flags = IORESOURCE_MEM | IORESOURCE_SUBTRACTIVE | IORESOURCE_ASSIGNED;
}
static void ram_resource(device_t dev, unsigned long index,
IORESOURCE_FIXED | IORESOURCE_STORED | IORESOURCE_ASSIGNED;
}
+static void tolm_test(void *gp, struct device *dev, struct resource *new)
+{
+ struct resource **best_p = gp;
+ struct resource *best;
+ best = *best_p;
+ if (!best || (best->base > new->base)) {
+ best = new;
+ }
+ *best_p = best;
+}
+
+static uint32_t find_pci_tolm(struct bus *bus)
+{
+ struct resource *min;
+ uint32_t tolm;
+ min = 0;
+ search_bus_resources(bus, IORESOURCE_MEM, IORESOURCE_MEM, tolm_test, &min);
+ tolm = 0xffffffffUL;
+ if (min && tolm > min->base) {
+ tolm = min->base;
+ }
+ return tolm;
+}
+
static void pci_domain_set_resources(device_t dev)
{
- struct resource *io, *mem1, *mem2;
- struct resource *resource, *last;
unsigned long mmio_basek;
uint32_t pci_tolm;
int i, idx;
-#if 0
- /* Place the IO devices somewhere safe */
- io = find_resource(dev, 0);
- io->base = DEVICE_IO_START;
-#endif
-#if 1
- /* Now reallocate the pci resources memory with the
- * highest addresses I can manage.
- */
- mem1 = find_resource(dev, 1);
- mem2 = find_resource(dev, 2);
- /* See if both resources have roughly the same limits */
- if (((mem1->limit <= 0xffffffff) && (mem2->limit <= 0xffffffff)) ||
- ((mem1->limit > 0xffffffff) && (mem2->limit > 0xffffffff)))
- {
- /* If so place the one with the most stringent alignment first
- */
- if (mem2->align > mem1->align) {
- struct resource *tmp;
- tmp = mem1;
- mem1 = mem2;
- mem2 = tmp;
- }
- /* Now place the memory as high up as it will go */
- mem2->base = resource_max(mem2);
- mem1->limit = mem2->base - 1;
- mem1->base = resource_max(mem1);
- }
- else {
- /* Place the resources as high up as they will go */
- mem2->base = resource_max(mem2);
- mem1->base = resource_max(mem1);
- }
-
-#if 0
- printk_debug("base1: 0x%08Lx limit1: 0x%08lx size: 0x%08Lx\n",
- mem1->base, mem1->limit, mem1->size);
- printk_debug("base2: 0x%08Lx limit2: 0x%08Lx size: 0x%08Lx\n",
- mem2->base, mem2->limit, mem2->size);
-#endif
-#endif
- pci_tolm = 0xffffffffUL;
- last = &dev->resource[dev->resources];
- for(resource = &dev->resource[0]; resource < last; resource++)
- {
-#if 1
- resource->flags |= IORESOURCE_ASSIGNED;
- resource->flags &= ~IORESOURCE_STORED;
-#endif
- 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;
- }
- }
+ pci_tolm = find_pci_tolm(&dev->link[0]);
#warning "FIXME handle interleaved nodes"
mmio_basek = pci_tolm >> 10;
}
ram_resource(dev, idx++, basek, sizek);
}
-
assign_resources(&dev->link[0]);
}
static unsigned int pci_domain_scan_bus(device_t dev, unsigned int max)
{
unsigned reg;
- int i;
/* Unmap all of the HT chains */
for(reg = 0xe0; reg <= 0xec; reg += 4) {
f1_write_config32(reg, 0);
static unsigned int cpu_bus_scan(device_t dev, unsigned int max)
{
struct bus *cpu_bus;
- unsigned reg;
int i;
/* Find which cpus are present */
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_amd_amdk8_ops = {
- .name = "AMD K8 Northbridge",
.enable_dev = enable_dev,
};
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