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1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * Copyright (C) NEC Electronics Corporation 2004-2006
4 *
5 * This file is based on the arch/mips/ddb5xxx/ddb5477/pci.c
6 *
7 * Copyright 2001 MontaVista Software Inc.
8 */
9
10#include <linux/kernel.h>
11#include <linux/init.h>
12#include <linux/types.h>
13#include <linux/pci.h>
14
15#include <asm/bootinfo.h>
16
17#include <asm/emma/emma2rh.h>
18
19#define EMMA2RH_PCI_HOST_SLOT 0x09
20#define EMMA2RH_USB_SLOT 0x03
21#define PCI_DEVICE_ID_NEC_EMMA2RH 0x014b /* EMMA2RH PCI Host */
22
23/*
24 * we fix up irqs based on the slot number.
25 * The first entry is at AD:11.
26 * Fortunately this works because, although we have two pci buses,
27 * they all have different slot numbers (except for rockhopper slot 20
28 * which is handled below).
29 *
30 */
31
32#define MAX_SLOT_NUM 10
33static unsigned char irq_map[][5] = {
34 [3] = {0, MARKEINS_PCI_IRQ_INTB, MARKEINS_PCI_IRQ_INTC,
35 MARKEINS_PCI_IRQ_INTD, 0,},
36 [4] = {0, MARKEINS_PCI_IRQ_INTA, 0, 0, 0,},
37 [5] = {0, 0, 0, 0, 0,},
38 [6] = {0, MARKEINS_PCI_IRQ_INTC, MARKEINS_PCI_IRQ_INTD,
39 MARKEINS_PCI_IRQ_INTA, MARKEINS_PCI_IRQ_INTB,},
40};
41
42static void nec_usb_controller_fixup(struct pci_dev *dev)
43{
44 if (PCI_SLOT(dev->devfn) == EMMA2RH_USB_SLOT)
45 /* on board USB controller configuration */
46 pci_write_config_dword(dev, 0xe4, 1 << 5);
47}
48
49DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_USB,
50 nec_usb_controller_fixup);
51
52/*
53 * Prevent the PCI layer from seeing the resources allocated to this device
54 * if it is the host bridge by marking it as such. These resources are of
55 * no consequence to the PCI layer (they are handled elsewhere).
56 */
57static void emma2rh_pci_host_fixup(struct pci_dev *dev)
58{
59 int i;
60
61 if (PCI_SLOT(dev->devfn) == EMMA2RH_PCI_HOST_SLOT) {
62 dev->class &= 0xff;
63 dev->class |= PCI_CLASS_BRIDGE_HOST << 8;
64 for (i = 0; i < PCI_NUM_RESOURCES; i++) {
65 dev->resource[i].start = 0;
66 dev->resource[i].end = 0;
67 dev->resource[i].flags = 0;
68 }
69 }
70}
71
72DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_EMMA2RH,
73 emma2rh_pci_host_fixup);
74
75int pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
76{
77 return irq_map[slot][pin];
78}
79
80/* Do platform specific device initialization at pci_enable_device() time */
81int pcibios_plat_dev_init(struct pci_dev *dev)
82{
83 return 0;
84}
1/*
2 * Copyright (C) NEC Electronics Corporation 2004-2006
3 *
4 * This file is based on the arch/mips/ddb5xxx/ddb5477/pci.c
5 *
6 * Copyright 2001 MontaVista Software Inc.
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 */
22
23#include <linux/kernel.h>
24#include <linux/init.h>
25#include <linux/types.h>
26#include <linux/pci.h>
27
28#include <asm/bootinfo.h>
29
30#include <asm/emma/emma2rh.h>
31
32#define EMMA2RH_PCI_HOST_SLOT 0x09
33#define EMMA2RH_USB_SLOT 0x03
34#define PCI_DEVICE_ID_NEC_EMMA2RH 0x014b /* EMMA2RH PCI Host */
35
36/*
37 * we fix up irqs based on the slot number.
38 * The first entry is at AD:11.
39 * Fortunately this works because, although we have two pci buses,
40 * they all have different slot numbers (except for rockhopper slot 20
41 * which is handled below).
42 *
43 */
44
45#define MAX_SLOT_NUM 10
46static unsigned char irq_map[][5] __initdata = {
47 [3] = {0, MARKEINS_PCI_IRQ_INTB, MARKEINS_PCI_IRQ_INTC,
48 MARKEINS_PCI_IRQ_INTD, 0,},
49 [4] = {0, MARKEINS_PCI_IRQ_INTA, 0, 0, 0,},
50 [5] = {0, 0, 0, 0, 0,},
51 [6] = {0, MARKEINS_PCI_IRQ_INTC, MARKEINS_PCI_IRQ_INTD,
52 MARKEINS_PCI_IRQ_INTA, MARKEINS_PCI_IRQ_INTB,},
53};
54
55static void nec_usb_controller_fixup(struct pci_dev *dev)
56{
57 if (PCI_SLOT(dev->devfn) == EMMA2RH_USB_SLOT)
58 /* on board USB controller configuration */
59 pci_write_config_dword(dev, 0xe4, 1 << 5);
60}
61
62DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_USB,
63 nec_usb_controller_fixup);
64
65/*
66 * Prevent the PCI layer from seeing the resources allocated to this device
67 * if it is the host bridge by marking it as such. These resources are of
68 * no consequence to the PCI layer (they are handled elsewhere).
69 */
70static void emma2rh_pci_host_fixup(struct pci_dev *dev)
71{
72 int i;
73
74 if (PCI_SLOT(dev->devfn) == EMMA2RH_PCI_HOST_SLOT) {
75 dev->class &= 0xff;
76 dev->class |= PCI_CLASS_BRIDGE_HOST << 8;
77 for (i = 0; i < PCI_NUM_RESOURCES; i++) {
78 dev->resource[i].start = 0;
79 dev->resource[i].end = 0;
80 dev->resource[i].flags = 0;
81 }
82 }
83}
84
85DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_EMMA2RH,
86 emma2rh_pci_host_fixup);
87
88int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
89{
90 return irq_map[slot][pin];
91}
92
93/* Do platform specific device initialization at pci_enable_device() time */
94int pcibios_plat_dev_init(struct pci_dev *dev)
95{
96 return 0;
97}