src/southbridge/intel/i82801dx/ide.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #include <console/console.h>
   4 #include <device/device.h>
   5 #include <device/pci.h>
   6 #include <device/pci_ids.h>
   7 #include <device/pci_ops.h>
   8 #include <stdint.h>
   9
  10 #include "chip.h"
  11 #include "i82801dx.h"
  12
  13 typedef struct southbridge_intel_i82801dx_config config_t;
  14
  15 static void ide_init(struct device *dev)
  16 {
  17         /* Get the chip configuration */
  18         config_t *config = dev->chip_info;
  19
  20         /* Enable IDE devices so the Linux IDE driver will work. */
  21         uint16_t ideTimingConfig;
  22
  23         ideTimingConfig = pci_read_config16(dev, IDE_TIM_PRI);
  24         ideTimingConfig &= ~IDE_DECODE_ENABLE;
  25         if (!config || config->ide0_enable) {
  26                 /* Enable primary IDE interface. */
  27                 ideTimingConfig |= IDE_DECODE_ENABLE;
  28                 printk(BIOS_DEBUG, "IDE0: Primary IDE interface is enabled\n");
  29         } else {
  30                 printk(BIOS_INFO, "IDE0: Primary IDE interface is disabled\n");
  31         }
  32         pci_write_config16(dev, IDE_TIM_PRI, ideTimingConfig);
  33
  34         ideTimingConfig = pci_read_config16(dev, IDE_TIM_SEC);
  35         ideTimingConfig &= ~IDE_DECODE_ENABLE;
  36         if (!config || config->ide1_enable) {
  37                 /* Enable secondary IDE interface. */
  38                 ideTimingConfig |= IDE_DECODE_ENABLE;
  39                 printk(BIOS_DEBUG, "IDE1: Secondary IDE interface is enabled\n");
  40         } else {
  41                 printk(BIOS_INFO, "IDE1: Secondary IDE interface is disabled\n");
  42         }
  43         pci_write_config16(dev, IDE_TIM_SEC, ideTimingConfig);
  44 }
  45
  46 static struct device_operations ide_ops = {
  47         .read_resources = pci_dev_read_resources,
  48         .set_resources = pci_dev_set_resources,
  49         .enable_resources = pci_dev_enable_resources,
  50         .init = ide_init,
  51         .enable = i82801dx_enable,
  52 };
  53
  54 /* 82801DB */
  55 static const struct pci_driver i82801db_ide __pci_driver = {
  56         .ops = &ide_ops,
  57         .vendor = PCI_VID_INTEL,
  58         .device = 0x24cb,
  59 };
  60
  61 /* 82801DBM */
  62 static const struct pci_driver i82801dbm_ide __pci_driver = {
  63         .ops = &ide_ops,
  64         .vendor = PCI_VID_INTEL,
  65         .device = 0x24ca,
  66 };