src/cpu/ppc/ppc4xx/pci_domain.c

   1 /*
   2  * Initialisation of the PCI bridge .
   3  */
   4
   5 #include <arch/io.h>
   6 #include <device/pci.h>
   7 #include <device/pci_ids.h>
   8 #include <console/console.h>
   9
  10 static unsigned int pci_domain_scan_bus(device_t dev, unsigned int max)
  11 {
  12         max = pci_scan_bus(&dev->link[0], PCI_DEVFN(0, 0), 0xff, max);
  13         return max;
  14 }
  15
  16 static void pci_domain_read_resources(device_t dev)
  17 {
  18         struct resource *resource;
  19
  20         /* Initialize the system wide io space constraints */
  21         resource = new_resource(dev, IOINDEX_SUBTRACTIVE(0,0));
  22         resource->limit = 0xffffUL;
  23         resource->flags = IORESOURCE_IO | IORESOURCE_SUBTRACTIVE | IORESOURCE_ASSIGNED;
  24
  25         /* Initialize the system wide memory resources constraints */
  26         resource = new_resource(dev, IOINDEX_SUBTRACTIVE(1,0));
  27         resource->limit = 0xffffffffULL;
  28         resource->flags = IORESOURCE_MEM | IORESOURCE_SUBTRACTIVE | IORESOURCE_ASSIGNED;
  29 }
  30
  31 static void ram_resource(device_t dev, unsigned long index,
  32         unsigned long basek, unsigned long sizek)
  33 {
  34         struct resource *resource;
  35
  36         if (!sizek) {
  37                 return;
  38         }
  39         resource = new_resource(dev, index);
  40         resource->base  = ((resource_t)basek) << 10;
  41         resource->size  = ((resource_t)sizek) << 10;
  42         resource->flags =  IORESOURCE_MEM | IORESOURCE_CACHEABLE | \
  43                 IORESOURCE_FIXED | IORESOURCE_STORED | IORESOURCE_ASSIGNED;
  44 }
  45
  46 static void pci_domain_set_resources(device_t dev)
  47 {
  48         int idx = 3; /* who knows? */
  49
  50         ram_resource(dev, idx, 0, CONFIG_EMBEDDED_RAM_SIZE>>10);
  51         assign_resources(&dev->link[0]);
  52 }
  53
  54 struct device_operations pci_domain_ops  = {
  55         .read_resources   = pci_domain_read_resources,
  56         .set_resources    = pci_domain_set_resources,
  57         .enable_resources = enable_childrens_resources,
  58         .init             = 0,
  59         .scan_bus         = pci_domain_scan_bus,
  60         .ops_pci_bus      = &pci_ppc_conf1
  61 };
  62
  63 static void enable_dev(struct device *dev)
  64 {
  65         /* Set the operations if it is a special bus type */
  66         if (dev->path.type == DEVICE_PATH_PCI_DOMAIN) {
  67                 dev->ops = &pci_domain_ops;
  68         }
  69 }
  70
  71 struct chip_operations cpu_ppc_ppc4xx_ops = {
  72         CHIP_NAME("PPC 4XX CPU")
  73         .enable_dev = enable_dev,
  74 };