src/soc/intel/denverton_ns/sata.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #include <device/mmio.h>
   4 #include <device/pci_ops.h>
   5 #include <console/console.h>
   6 #include <device/device.h>
   7 #include <device/pci.h>
   8 #include <device/pci_ids.h>
   9
  10 #include <soc/pci_devs.h>
  11 #include <soc/ramstage.h>
  12 #include <soc/sata.h>
  13
  14 #include "chip.h"
  15
  16 static void sata_init(struct device *dev)
  17 {
  18         u32 reg32;
  19         u32 abar;
  20
  21         printk(BIOS_DEBUG, "SATA: Initializing...\n");
  22
  23         /* SATA configuration is handled by the FSP */
  24
  25         /* Enable BARs */
  26         pci_write_config16(dev, PCI_COMMAND, PCI_COMMAND_MASTER |
  27                                                      PCI_COMMAND_MEMORY |
  28                                                      PCI_COMMAND_IO);
  29
  30         printk(BIOS_DEBUG, "SATA: Controller in AHCI mode.\n");
  31
  32         /* Set the controller mode */
  33         reg32 = pci_read_config32(dev, SATAGC);
  34         reg32 &= ~SATAGC_AHCI;
  35         pci_write_config32(dev, SATAGC, reg32);
  36
  37         /* Initialize AHCI memory-mapped space */
  38         abar = pci_read_config32(dev, PCI_BASE_ADDRESS_5);
  39         printk(BIOS_DEBUG, "ABAR: %08X\n", abar);
  40
  41         /* Enable AHCI Mode */
  42         reg32 = read32((void *)(abar + 0x04));
  43         reg32 |= (1 << 31);
  44         write32((void *)(abar + 0x04), reg32);
  45 }
  46
  47 static void sata_enable(struct device *dev) { /* TODO */ }
  48
  49 static struct device_operations sata_ops = {
  50         .read_resources = pci_dev_read_resources,
  51         .set_resources = pci_dev_set_resources,
  52         .enable_resources = pci_dev_enable_resources,
  53         .init = sata_init,
  54         .enable = sata_enable,
  55         .ops_pci = &soc_pci_ops,
  56 };
  57
  58 static const unsigned short pci_device_ids[] = {
  59         PCI_DID_INTEL_DNV_SATA_AHCI_1,
  60         PCI_DID_INTEL_DNV_SATA_AHCI_2,
  61         0
  62 };
  63
  64 static const struct pci_driver soc_sata __pci_driver = {
  65         .ops = &sata_ops,
  66         .vendor = PCI_VID_INTEL,
  67         .devices = pci_device_ids,
  68 };