Contributors: 4
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Dmitry Pervushin |
291 |
98.64% |
1 |
25.00% |
| Thomas Gleixner |
2 |
0.68% |
1 |
25.00% |
| Ralf Baechle |
1 |
0.34% |
1 |
25.00% |
| Shinya Kuribayashi |
1 |
0.34% |
1 |
25.00% |
| Total |
295 |
|
4 |
|
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (C) NEC Electronics Corporation 2004-2006
*
* This file is based on the arch/mips/ddb5xxx/ddb5477/pci.c
*
* Copyright 2001 MontaVista Software Inc.
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/types.h>
#include <linux/pci.h>
#include <asm/bootinfo.h>
#include <asm/emma/emma2rh.h>
#define EMMA2RH_PCI_HOST_SLOT 0x09
#define EMMA2RH_USB_SLOT 0x03
#define PCI_DEVICE_ID_NEC_EMMA2RH 0x014b /* EMMA2RH PCI Host */
/*
* we fix up irqs based on the slot number.
* The first entry is at AD:11.
* Fortunately this works because, although we have two pci buses,
* they all have different slot numbers (except for rockhopper slot 20
* which is handled below).
*
*/
#define MAX_SLOT_NUM 10
static unsigned char irq_map[][5] = {
[3] = {0, MARKEINS_PCI_IRQ_INTB, MARKEINS_PCI_IRQ_INTC,
MARKEINS_PCI_IRQ_INTD, 0,},
[4] = {0, MARKEINS_PCI_IRQ_INTA, 0, 0, 0,},
[5] = {0, 0, 0, 0, 0,},
[6] = {0, MARKEINS_PCI_IRQ_INTC, MARKEINS_PCI_IRQ_INTD,
MARKEINS_PCI_IRQ_INTA, MARKEINS_PCI_IRQ_INTB,},
};
static void nec_usb_controller_fixup(struct pci_dev *dev)
{
if (PCI_SLOT(dev->devfn) == EMMA2RH_USB_SLOT)
/* on board USB controller configuration */
pci_write_config_dword(dev, 0xe4, 1 << 5);
}
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_USB,
nec_usb_controller_fixup);
/*
* Prevent the PCI layer from seeing the resources allocated to this device
* if it is the host bridge by marking it as such. These resources are of
* no consequence to the PCI layer (they are handled elsewhere).
*/
static void emma2rh_pci_host_fixup(struct pci_dev *dev)
{
int i;
if (PCI_SLOT(dev->devfn) == EMMA2RH_PCI_HOST_SLOT) {
dev->class &= 0xff;
dev->class |= PCI_CLASS_BRIDGE_HOST << 8;
for (i = 0; i < PCI_NUM_RESOURCES; i++) {
dev->resource[i].start = 0;
dev->resource[i].end = 0;
dev->resource[i].flags = 0;
}
}
}
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_EMMA2RH,
emma2rh_pci_host_fixup);
int pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
{
return irq_map[slot][pin];
}
/* Do platform specific device initialization at pci_enable_device() time */
int pcibios_plat_dev_init(struct pci_dev *dev)
{
return 0;
}