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https://github.com/AsahiLinux/u-boot
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d024236e5a
We have a large number of places where while we historically referenced gd in the code we no longer do, as well as cases where the code added that line "just in case" during development and never dropped it. Signed-off-by: Tom Rini <trini@konsulko.com>
86 lines
1.8 KiB
C
86 lines
1.8 KiB
C
/*
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* Copyright (c) 2011 The Chromium OS Authors.
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* (C) Copyright 2008,2009
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* Graeme Russ, <graeme.russ@gmail.com>
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*
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* (C) Copyright 2002
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* Daniel Engström, Omicron Ceti AB, <daniel@omicron.se>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <dm.h>
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#include <errno.h>
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#include <malloc.h>
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#include <pci.h>
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#include <asm/io.h>
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#include <asm/pci.h>
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int pci_x86_read_config(struct udevice *bus, pci_dev_t bdf, uint offset,
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ulong *valuep, enum pci_size_t size)
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{
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outl(bdf | (offset & 0xfc) | PCI_CFG_EN, PCI_REG_ADDR);
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switch (size) {
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case PCI_SIZE_8:
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*valuep = inb(PCI_REG_DATA + (offset & 3));
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break;
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case PCI_SIZE_16:
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*valuep = inw(PCI_REG_DATA + (offset & 2));
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break;
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case PCI_SIZE_32:
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*valuep = inl(PCI_REG_DATA);
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break;
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}
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return 0;
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}
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int pci_x86_write_config(struct udevice *bus, pci_dev_t bdf, uint offset,
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ulong value, enum pci_size_t size)
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{
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outl(bdf | (offset & 0xfc) | PCI_CFG_EN, PCI_REG_ADDR);
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switch (size) {
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case PCI_SIZE_8:
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outb(value, PCI_REG_DATA + (offset & 3));
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break;
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case PCI_SIZE_16:
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outw(value, PCI_REG_DATA + (offset & 2));
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break;
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case PCI_SIZE_32:
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outl(value, PCI_REG_DATA);
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break;
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}
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return 0;
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}
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void pci_assign_irqs(int bus, int device, u8 irq[4])
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{
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pci_dev_t bdf;
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int func;
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u16 vendor;
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u8 pin, line;
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for (func = 0; func < 8; func++) {
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bdf = PCI_BDF(bus, device, func);
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pci_read_config16(bdf, PCI_VENDOR_ID, &vendor);
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if (vendor == 0xffff || vendor == 0x0000)
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continue;
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pci_read_config8(bdf, PCI_INTERRUPT_PIN, &pin);
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/* PCI spec says all values except 1..4 are reserved */
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if ((pin < 1) || (pin > 4))
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continue;
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line = irq[pin - 1];
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if (!line)
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continue;
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debug("Assigning IRQ %d to PCI device %d.%x.%d (INT%c)\n",
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line, bus, device, func, 'A' + pin - 1);
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pci_write_config8(bdf, PCI_INTERRUPT_LINE, line);
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}
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}
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