From 76cb841cb886eef6b3bee341a2266c76578724ad Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Mon, 6 May 2024 03:02:30 +0200 Subject: Adding upstream version 4.19.249. Signed-off-by: Daniel Baumann --- arch/mips/pci/fixup-emma2rh.c | 97 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 97 insertions(+) create mode 100644 arch/mips/pci/fixup-emma2rh.c (limited to 'arch/mips/pci/fixup-emma2rh.c') diff --git a/arch/mips/pci/fixup-emma2rh.c b/arch/mips/pci/fixup-emma2rh.c new file mode 100644 index 000000000..c31cb6af1 --- /dev/null +++ b/arch/mips/pci/fixup-emma2rh.c @@ -0,0 +1,97 @@ +/* + * Copyright (C) NEC Electronics Corporation 2004-2006 + * + * This file is based on the arch/mips/ddb5xxx/ddb5477/pci.c + * + * Copyright 2001 MontaVista Software Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include +#include +#include +#include + +#include + +#include + +#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; +} -- cgit v1.2.3