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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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c23bfc3835
Most PCI implementations perform simple root bus scanning. Rather than having each group of platforms provide a duplicated bus scan function, provide the PCI configuration ops structure via the hw_pci structure, and call the root bus scanning function from core ARM PCI code. Acked-by: Krzysztof Hałasa <khc@pm.waw.pl> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
150 lines
3.5 KiB
C
150 lines
3.5 KiB
C
/*
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* arch/arm/mach-iop33x/iq80331.c
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*
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* Board support code for the Intel IQ80331 platform.
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*
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* Author: Dave Jiang <dave.jiang@intel.com>
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* Copyright (C) 2003 Intel Corp.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*/
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#include <linux/mm.h>
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/pci.h>
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#include <linux/string.h>
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#include <linux/serial_core.h>
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#include <linux/serial_8250.h>
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#include <linux/mtd/physmap.h>
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#include <linux/platform_device.h>
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#include <linux/io.h>
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#include <mach/hardware.h>
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#include <asm/irq.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/map.h>
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#include <asm/mach/pci.h>
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#include <asm/mach/time.h>
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#include <asm/mach-types.h>
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#include <asm/page.h>
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#include <asm/pgtable.h>
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#include <mach/time.h>
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/*
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* IQ80331 timer tick configuration.
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*/
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static void __init iq80331_timer_init(void)
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{
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/* D-Step parts run at a higher internal bus frequency */
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if (*IOP3XX_ATURID >= 0xa)
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iop_init_time(333000000);
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else
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iop_init_time(266000000);
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}
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static struct sys_timer iq80331_timer = {
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.init = iq80331_timer_init,
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};
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/*
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* IQ80331 PCI.
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*/
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static int __init
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iq80331_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
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{
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int irq;
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if (slot == 1 && pin == 1) {
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/* PCI-X Slot INTA */
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irq = IRQ_IOP33X_XINT1;
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} else if (slot == 1 && pin == 2) {
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/* PCI-X Slot INTB */
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irq = IRQ_IOP33X_XINT2;
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} else if (slot == 1 && pin == 3) {
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/* PCI-X Slot INTC */
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irq = IRQ_IOP33X_XINT3;
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} else if (slot == 1 && pin == 4) {
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/* PCI-X Slot INTD */
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irq = IRQ_IOP33X_XINT0;
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} else if (slot == 2) {
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/* GigE */
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irq = IRQ_IOP33X_XINT2;
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} else {
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printk(KERN_ERR "iq80331_pci_map_irq() called for unknown "
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"device PCI:%d:%d:%d\n", dev->bus->number,
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PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
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irq = -1;
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}
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return irq;
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}
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static struct hw_pci iq80331_pci __initdata = {
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.nr_controllers = 1,
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.ops = &iop3xx_ops,
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.setup = iop3xx_pci_setup,
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.preinit = iop3xx_pci_preinit_cond,
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.map_irq = iq80331_pci_map_irq,
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};
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static int __init iq80331_pci_init(void)
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{
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if ((iop3xx_get_init_atu() == IOP3XX_INIT_ATU_ENABLE) &&
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machine_is_iq80331())
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pci_common_init(&iq80331_pci);
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return 0;
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}
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subsys_initcall(iq80331_pci_init);
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/*
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* IQ80331 machine initialisation.
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*/
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static struct physmap_flash_data iq80331_flash_data = {
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.width = 1,
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};
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static struct resource iq80331_flash_resource = {
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.start = 0xc0000000,
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.end = 0xc07fffff,
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.flags = IORESOURCE_MEM,
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};
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static struct platform_device iq80331_flash_device = {
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.name = "physmap-flash",
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.id = 0,
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.dev = {
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.platform_data = &iq80331_flash_data,
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},
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.num_resources = 1,
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.resource = &iq80331_flash_resource,
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};
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static void __init iq80331_init_machine(void)
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{
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platform_device_register(&iop3xx_i2c0_device);
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platform_device_register(&iop3xx_i2c1_device);
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platform_device_register(&iop33x_uart0_device);
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platform_device_register(&iop33x_uart1_device);
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platform_device_register(&iq80331_flash_device);
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platform_device_register(&iop3xx_dma_0_channel);
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platform_device_register(&iop3xx_dma_1_channel);
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platform_device_register(&iop3xx_aau_channel);
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}
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MACHINE_START(IQ80331, "Intel IQ80331")
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/* Maintainer: Intel Corp. */
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.atag_offset = 0x100,
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.map_io = iop3xx_map_io,
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.init_irq = iop33x_init_irq,
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.timer = &iq80331_timer,
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.init_machine = iq80331_init_machine,
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.restart = iop3xx_restart,
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MACHINE_END
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