src/southbridge/amd/amd8111/amd8111_ide.c

   1 #include <console/console.h>
   2 #include <device/device.h>
   3 #include <device/pci.h>
   4 #include <device/pci_ids.h>
   5 #include <device/pci_ops.h>
   6 #include "amd8111.h"
   7
   8 static void ide_init(struct device *dev)
   9 {
  10         struct southbridge_amd_amd8111_config *conf;
  11         /* Enable ide devices so the linux ide driver will work */
  12         uint16_t word;
  13         uint8_t byte;
  14         conf = dev->chip_info;
  15
  16         word = pci_read_config16(dev, 0x40);
  17         /* Ensure prefetch is disabled */
  18         word &= ~((1 << 15) | (1 << 13));
  19         if (conf->ide1_enable) {
  20                 /* Enable secondary ide interface */
  21                 word |= (1<<0);
  22                 printk(BIOS_DEBUG, "IDE1 ");
  23         }
  24         if (conf->ide0_enable) {
  25                 /* Enable primary ide interface */
  26                 word |= (1<<1);
  27                 printk(BIOS_DEBUG, "IDE0 ");
  28         }
  29
  30         word |= (1<<12);
  31         word |= (1<<14);
  32
  33         pci_write_config16(dev, 0x40, word);
  34
  35
  36         byte = 0x20 ; // Latency: 64-->32
  37         pci_write_config8(dev, 0xd, byte);
  38
  39         word = 0x0f;
  40         pci_write_config16(dev, 0x42, word);
  41 }
  42
  43 static void lpci_set_subsystem(device_t dev, unsigned vendor, unsigned device)
  44 {
  45         pci_write_config32(dev, 0x70,
  46                 ((device & 0xffff) << 16) | (vendor & 0xffff));
  47 }
  48 static struct pci_operations lops_pci = {
  49         .set_subsystem = lpci_set_subsystem,
  50 };
  51 static struct device_operations ide_ops  = {
  52         .read_resources   = pci_dev_read_resources,
  53         .set_resources    = pci_dev_set_resources,
  54         .enable_resources = pci_dev_enable_resources,
  55         .init             = ide_init,
  56         .scan_bus         = 0,
  57         .enable           = amd8111_enable,
  58         .ops_pci          = &lops_pci
  59 };
  60
  61 static const struct pci_driver ide_driver __pci_driver = {
  62         .ops    = &ide_ops,
  63         .vendor = PCI_VENDOR_ID_AMD,
  64         .device = PCI_DEVICE_ID_AMD_8111_IDE,
  65 };
  66