mirror of
https://github.com/torvalds/linux.git
synced 2024-11-28 15:11:31 +00:00
19a8d6b760
04c81c7293("MIPS: PCI: Replace pci_fixup_irqs() call with host bridge IRQ mapping hooks") moved the PCI IRQ fixup to the new host bridge map/swizzle_irq() hooks mechanism. Those hooks can also be called after boot, when all the __init/__initdata/__initconst sections have been freed. Therefore, functions called by them (and the data they refer to) must not be marked as __init/__initdata/__initconst lest compilation trigger section mismatch warnings. Fix all the board files map_irq() hooks by simply removing the respective __init/__initdata/__initconst section markers and by adding another persistent hook IRQ map for the txx9 board files. Fixes:04c81c7293("MIPS: PCI: Replace pci_fixup_irqs() call with host bridge IRQ mapping hooks") Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Arnd Bergmann <arnd@arndb.de> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Steve French <smfrench@gmail.com>
108 lines
2.6 KiB
C
108 lines
2.6 KiB
C
/*
|
|
* Based on linux/arch/mips/txx9/rbtx4939/setup.c,
|
|
* and RBTX49xx patch from CELF patch archive.
|
|
*
|
|
* Copyright 2001, 2003-2005 MontaVista Software Inc.
|
|
* Copyright (C) 2004 by Ralf Baechle (ralf@linux-mips.org)
|
|
* (C) Copyright TOSHIBA CORPORATION 2000-2001, 2004-2007
|
|
*
|
|
* This file is subject to the terms and conditions of the GNU General Public
|
|
* License. See the file "COPYING" in the main directory of this archive
|
|
* for more details.
|
|
*/
|
|
#include <linux/init.h>
|
|
#include <linux/pci.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/interrupt.h>
|
|
#include <asm/txx9/generic.h>
|
|
#include <asm/txx9/tx4939.h>
|
|
|
|
int __init tx4939_report_pciclk(void)
|
|
{
|
|
int pciclk = 0;
|
|
|
|
pr_info("PCIC --%s PCICLK:",
|
|
(__raw_readq(&tx4939_ccfgptr->ccfg) & TX4939_CCFG_PCI66) ?
|
|
" PCI66" : "");
|
|
if (__raw_readq(&tx4939_ccfgptr->pcfg) & TX4939_PCFG_PCICLKEN_ALL) {
|
|
pciclk = txx9_master_clock * 20 / 6;
|
|
if (!(__raw_readq(&tx4939_ccfgptr->ccfg) & TX4939_CCFG_PCI66))
|
|
pciclk /= 2;
|
|
pr_cont("Internal(%u.%uMHz)",
|
|
(pciclk + 50000) / 1000000,
|
|
((pciclk + 50000) / 100000) % 10);
|
|
} else {
|
|
pr_cont("External");
|
|
pciclk = -1;
|
|
}
|
|
pr_cont("\n");
|
|
return pciclk;
|
|
}
|
|
|
|
void __init tx4939_report_pci1clk(void)
|
|
{
|
|
unsigned int pciclk = txx9_master_clock * 20 / 6;
|
|
|
|
pr_info("PCIC1 -- PCICLK:%u.%uMHz\n",
|
|
(pciclk + 50000) / 1000000,
|
|
((pciclk + 50000) / 100000) % 10);
|
|
}
|
|
|
|
int tx4939_pcic1_map_irq(const struct pci_dev *dev, u8 slot)
|
|
{
|
|
if (get_tx4927_pcicptr(dev->bus->sysdata) == tx4939_pcic1ptr) {
|
|
switch (slot) {
|
|
case TX4927_PCIC_IDSEL_AD_TO_SLOT(31):
|
|
if (__raw_readq(&tx4939_ccfgptr->pcfg) &
|
|
TX4939_PCFG_ET0MODE)
|
|
return TXX9_IRQ_BASE + TX4939_IR_ETH(0);
|
|
break;
|
|
case TX4927_PCIC_IDSEL_AD_TO_SLOT(30):
|
|
if (__raw_readq(&tx4939_ccfgptr->pcfg) &
|
|
TX4939_PCFG_ET1MODE)
|
|
return TXX9_IRQ_BASE + TX4939_IR_ETH(1);
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
int tx4939_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
|
|
{
|
|
int irq = tx4939_pcic1_map_irq(dev, slot);
|
|
|
|
if (irq >= 0)
|
|
return irq;
|
|
irq = pin;
|
|
/* IRQ rotation */
|
|
irq--; /* 0-3 */
|
|
irq = (irq + 33 - slot) % 4;
|
|
irq++; /* 1-4 */
|
|
|
|
switch (irq) {
|
|
case 1:
|
|
irq = TXX9_IRQ_BASE + TX4939_IR_INTA;
|
|
break;
|
|
case 2:
|
|
irq = TXX9_IRQ_BASE + TX4939_IR_INTB;
|
|
break;
|
|
case 3:
|
|
irq = TXX9_IRQ_BASE + TX4939_IR_INTC;
|
|
break;
|
|
case 4:
|
|
irq = TXX9_IRQ_BASE + TX4939_IR_INTD;
|
|
break;
|
|
}
|
|
return irq;
|
|
}
|
|
|
|
void __init tx4939_setup_pcierr_irq(void)
|
|
{
|
|
if (request_irq(TXX9_IRQ_BASE + TX4939_IR_PCIERR,
|
|
tx4927_pcierr_interrupt,
|
|
0, "PCI error",
|
|
(void *)TX4939_PCIC_REG))
|
|
pr_warn("Failed to request irq for PCIERR\n");
|
|
}
|