src/southbridge/intel/esb6300/esb6300_pic.c

   1 /*
   2  * (C) 2004 Linux Networx
   3  */
   4 #include <console/console.h>
   5 #include <device/device.h>
   6 #include <device/pci.h>
   7 #include <device/pci_ids.h>
   8 #include <device/pci_ops.h>
   9 #include <arch/ioapic.h>
  10 #include "esb6300.h"
  11
  12 static void pic_init(struct device *dev)
  13 {
  14
  15         uint16_t word;
  16
  17         /* Clear system errors */
  18         word = pci_read_config16(dev, 0x06);
  19         word |= 0xf900; /* Clear possible errors */
  20         pci_write_config16(dev, 0x06, word);
  21
  22         /* enable interrupt lines */
  23         pci_write_config8(dev, 0x3c, 0xff);
  24
  25         /* Setup the ioapic */
  26         clear_ioapic(IO_APIC_ADDR + 0x10000);
  27 }
  28
  29 static void pic_read_resources(device_t dev)
  30 {
  31         struct resource *res;
  32
  33         /* Get the normal pci resources of this device */
  34         pci_dev_read_resources(dev);
  35
  36         /* Report the pic1 mbar resource */
  37         res = new_resource(dev, 0x44);
  38         res->base  = IO_APIC_ADDR + 0x10000;
  39         res->size  = 256;
  40         res->limit = res->base + res->size -1;
  41         res->align = 8;
  42         res->gran  = 8;
  43         res->flags = IORESOURCE_MEM | IORESOURCE_FIXED |
  44                 IORESOURCE_STORED | IORESOURCE_ASSIGNED;
  45         dev->command |= PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER;
  46 }
  47
  48 static struct pci_operations lops_pci = {
  49         /* Can we set the pci subsystem and device id? */
  50         .set_subsystem = 0,
  51 };
  52
  53 static struct device_operations pci_ops  = {
  54         .read_resources   = pic_read_resources,
  55         .set_resources    = pci_dev_set_resources,
  56         .enable_resources = pci_dev_enable_resources,
  57         .init             = pic_init,
  58         .scan_bus         = 0,
  59         .enable           = esb6300_enable,
  60         .ops_pci          = &lops_pci,
  61 };
  62
  63 static const struct pci_driver pci_driver __pci_driver = {
  64         .ops    = &pci_ops,
  65         .vendor = PCI_VENDOR_ID_INTEL,
  66         .device = PCI_DEVICE_ID_INTEL_6300ESB_APIC1,
  67 };
  68