src/mainboard/roda/rk9/ti_pci7xx1.c

   1 /*
   2  * This file is part of the coreboot project.
   3  *
   4  * Copyright (C) 2012 secunet Security Networks AG
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License as
   8  * published by the Free Software Foundation; version 2 of
   9  * the License.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc.
  19  */
  20
  21 #include <stdint.h>
  22 #include <console/console.h>
  23 #include <device/device.h>
  24 #include <device/pci.h>
  25 #include <device/cardbus.h>
  26
  27 static void pci7xx1_enable(struct device *const dev)
  28 {
  29         printk(BIOS_DEBUG, "%s: TI PCI7xx1 media controller\n", __func__);
  30         if (PCI_FUNC(dev->path.pci.devfn) == 0) {
  31                 const uint16_t secondary = dev->bus->secondary;
  32                 const unsigned slot = PCI_SLOT(dev->path.pci.devfn);
  33
  34                 int fn;
  35
  36                 /* Hide functions based on devicetree info. */
  37                 u16 gcr = pci_read_config16(dev, 0x86);
  38                 for (fn = 5; fn > 0; --fn) {
  39                         const struct device *const d =
  40                                 dev_find_slot(secondary, PCI_DEVFN(slot, fn));
  41                         if (!d || d->enabled) continue;
  42                         printk(BIOS_DEBUG,
  43                                 "%s: Hiding function #%d.\n", __func__, fn);
  44                         switch (fn) {
  45                                 case 1: gcr |= 1 << 4; break; /* CardBus B */
  46                                 case 2: gcr |= 1 << 3; break; /* OHCI 1394 */
  47                                 case 3: gcr |= 1 << 5; break; /* Flash media */
  48                                 case 4: gcr |= 1 << 6; break; /* SD card */
  49                                 case 5: gcr |= 1 << 7; break; /* Smart Card */
  50                         }
  51                 }
  52                 pci_write_config16(dev, 0x86, gcr);
  53         }
  54 }
  55
  56 static struct device_operations device_ops = {
  57         .read_resources         = cardbus_read_resources,
  58         .set_resources          = pci_dev_set_resources,
  59         .enable_resources       = cardbus_enable_resources,
  60         .init                   = 0,
  61         .scan_bus               = pci_scan_bridge,
  62         .enable                 = pci7xx1_enable,
  63         .reset_bus              = pci_bus_reset,
  64 };
  65
  66 static const struct pci_driver ti_pci7xx1 __pci_driver = {
  67         .ops    = &device_ops,
  68         .vendor = 0x104c,
  69         .device = 0x8031,
  70 };