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linux/arch/powerpc/platforms/86xx/pci.c
Jon Loeliger b809b3e86f [POWERPC] Add mpc8641hpcn PCI/PCI-Express platform files. 
Signed-off-by: Xianghua Xiao <x.xiao@freescale.com>
Signed-off-by: Wei Zhang <Wei.Zhang@freescale.com>
Signed-off-by: Haiying Wang <Haiying.Wang@freescale.com>
Signed-off-by: Jon Loeliger <jdl@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-06-21 15:01:28 +10:00

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/*
* MPC86XX pci setup code
*
* Recode: ZHANG WEI <wei.zhang@freescale.com>
* Initial author: Xianghua Xiao <x.xiao@freescale.com>
*
* Copyright 2006 Freescale Semiconductor 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.
*/
#include <linux/config.h>
#include <linux/types.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/pci.h>
#include <linux/serial.h>
#include <asm/system.h>
#include <asm/atomic.h>
#include <asm/io.h>
#include <asm/prom.h>
#include <asm/immap_86xx.h>
#include <asm/pci-bridge.h>
#include <sysdev/fsl_soc.h>
#include "mpc86xx.h"
#undef DEBUG
#ifdef DEBUG
#define DBG(fmt, args...) printk(KERN_ERR "%s: " fmt, __FUNCTION__, ## args)
#else
#define DBG(fmt, args...)
#endif
struct pcie_outbound_window_regs {
uint pexotar; /* 0x.0 - PCI Express outbound translation address register */
uint pexotear; /* 0x.4 - PCI Express outbound translation extended address register */
uint pexowbar; /* 0x.8 - PCI Express outbound window base address register */
char res1[4];
uint pexowar; /* 0x.10 - PCI Express outbound window attributes register */
char res2[12];
};
struct pcie_inbound_window_regs {
uint pexitar; /* 0x.0 - PCI Express inbound translation address register */
char res1[4];
uint pexiwbar; /* 0x.8 - PCI Express inbound window base address register */
uint pexiwbear; /* 0x.c - PCI Express inbound window base extended address register */
uint pexiwar; /* 0x.10 - PCI Express inbound window attributes register */
char res2[12];
};
static void __init setup_pcie_atmu(struct pci_controller *hose, struct resource *rsrc)
{
volatile struct ccsr_pex *pcie;
volatile struct pcie_outbound_window_regs *pcieow;
volatile struct pcie_inbound_window_regs *pcieiw;
int i = 0;
DBG("PCIE memory map start 0x%x, size 0x%x\n", rsrc->start,
rsrc->end - rsrc->start + 1);
pcie = ioremap(rsrc->start, rsrc->end - rsrc->start + 1);
/* Disable all windows (except pexowar0 since its ignored) */
pcie->pexowar1 = 0;
pcie->pexowar2 = 0;
pcie->pexowar3 = 0;
pcie->pexowar4 = 0;
pcie->pexiwar1 = 0;
pcie->pexiwar2 = 0;
pcie->pexiwar3 = 0;
pcieow = (struct pcie_outbound_window_regs *)&pcie->pexotar1;
pcieiw = (struct pcie_inbound_window_regs *)&pcie->pexitar1;
/* Setup outbound MEM window */
for(i = 0; i < 3; i++)
if (hose->mem_resources[i].flags & IORESOURCE_MEM){
DBG("PCIE MEM resource start 0x%08x, size 0x%08x.\n",
hose->mem_resources[i].start,
hose->mem_resources[i].end
- hose->mem_resources[i].start + 1);
pcieow->pexotar = (hose->mem_resources[i].start) >> 12
& 0x000fffff;
pcieow->pexotear = 0;
pcieow->pexowbar = (hose->mem_resources[i].start) >> 12
& 0x000fffff;
/* Enable, Mem R/W */
pcieow->pexowar = 0x80044000 |
(__ilog2(hose->mem_resources[i].end
- hose->mem_resources[i].start + 1)
- 1);
pcieow++;
}
/* Setup outbound IO window */
if (hose->io_resource.flags & IORESOURCE_IO){
DBG("PCIE IO resource start 0x%08x, size 0x%08x, phy base 0x%08x.\n",
hose->io_resource.start,
hose->io_resource.end - hose->io_resource.start + 1,
hose->io_base_phys);
pcieow->pexotar = (hose->io_resource.start) >> 12 & 0x000fffff;
pcieow->pexotear = 0;
pcieow->pexowbar = (hose->io_base_phys) >> 12 & 0x000fffff;
/* Enable, IO R/W */
pcieow->pexowar = 0x80088000 | (__ilog2(hose->io_resource.end
- hose->io_resource.start + 1) - 1);
}
/* Setup 2G inbound Memory Window @ 0 */
pcieiw->pexitar = 0x00000000;
pcieiw->pexiwbar = 0x00000000;
/* Enable, Prefetch, Local Mem, Snoop R/W, 2G */
pcieiw->pexiwar = 0xa0f5501e;
}
static void __init
mpc86xx_setup_pcie(struct pci_controller *hose, u32 pcie_offset, u32 pcie_size)
{
volatile struct ccsr_pex *pcie;
u16 cmd;
unsigned int temps;
DBG("PCIE host controller register offset 0x%08x, size 0x%08x.\n",
pcie_offset, pcie_size);
pcie = ioremap(pcie_offset, pcie_size);
early_read_config_word(hose, 0, 0, PCI_COMMAND, &cmd);
cmd |= PCI_COMMAND_SERR | PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY
| PCI_COMMAND_IO;
early_write_config_word(hose, 0, 0, PCI_COMMAND, cmd);
early_write_config_byte(hose, 0, 0, PCI_LATENCY_TIMER, 0x80);
/* PCIE Bus, Fix the MPC8641D host bridge's location to bus 0xFF. */
early_read_config_dword(hose, 0, 0, PCI_PRIMARY_BUS, &temps);
temps = (temps & 0xff000000) | (0xff) | (0x0 << 8) | (0xfe << 16);
early_write_config_dword(hose, 0, 0, PCI_PRIMARY_BUS, temps);
}
int __init add_bridge(struct device_node *dev)
{
int len;
struct pci_controller *hose;
struct resource rsrc;
int *bus_range;
int has_address = 0;
int primary = 0;
DBG("Adding PCIE host bridge %s\n", dev->full_name);
/* Fetch host bridge registers address */
has_address = (of_address_to_resource(dev, 0, &rsrc) == 0);
/* Get bus range if any */
bus_range = (int *) get_property(dev, "bus-range", &len);
if (bus_range == NULL || len < 2 * sizeof(int))
printk(KERN_WARNING "Can't get bus-range for %s, assume"
" bus 0\n", dev->full_name);
hose = pcibios_alloc_controller();
if (!hose)
return -ENOMEM;
hose->arch_data = dev;
hose->set_cfg_type = 1;
/* last_busno = 0xfe cause by MPC8641 PCIE bug */
hose->first_busno = bus_range ? bus_range[0] : 0x0;
hose->last_busno = bus_range ? bus_range[1] : 0xfe;
setup_indirect_pcie(hose, rsrc.start, rsrc.start + 0x4);
/* Setup the PCIE host controller. */
mpc86xx_setup_pcie(hose, rsrc.start, rsrc.end - rsrc.start + 1);
if ((rsrc.start & 0xfffff) == 0x8000)
primary = 1;
printk(KERN_INFO "Found MPC86xx PCIE host bridge at 0x%08lx. "
"Firmware bus number: %d->%d\n",
rsrc.start, hose->first_busno, hose->last_busno);
DBG(" ->Hose at 0x%p, cfg_addr=0x%p,cfg_data=0x%p\n",
hose, hose->cfg_addr, hose->cfg_data);
/* Interpret the "ranges" property */
/* This also maps the I/O region and sets isa_io/mem_base */
pci_process_bridge_OF_ranges(hose, dev, primary);
/* Setup PEX window registers */
setup_pcie_atmu(hose, &rsrc);
return 0;
}
static void __devinit quirk_ali1575(struct pci_dev *dev)
{
unsigned short temp;
/*
* ALI1575 interrupts route table setup:
*
* IRQ pin IRQ#
* PIRQA ---- 3
* PIRQB ---- 4
* PIRQC ---- 5
* PIRQD ---- 6
* PIRQE ---- 9
* PIRQF ---- 10
* PIRQG ---- 11
* PIRQH ---- 12
*
* interrupts for PCI slot0 -- PIRQA / PIRQB / PIRQC / PIRQD
* PCI slot1 -- PIRQB / PIRQC / PIRQD / PIRQA
*/
pci_write_config_dword(dev, 0x48, 0xb9317542);
/* USB 1.1 OHCI controller 1, interrupt: PIRQE */
pci_write_config_byte(dev, 0x86, 0x0c);
/* USB 1.1 OHCI controller 2, interrupt: PIRQF */
pci_write_config_byte(dev, 0x87, 0x0d);
/* USB 1.1 OHCI controller 3, interrupt: PIRQH */
pci_write_config_byte(dev, 0x88, 0x0f);
/* USB 2.0 controller, interrupt: PIRQ7 */
pci_write_config_byte(dev, 0x74, 0x06);
/* Audio controller, interrupt: PIRQE */
pci_write_config_byte(dev, 0x8a, 0x0c);
/* Modem controller, interrupt: PIRQF */
pci_write_config_byte(dev, 0x8b, 0x0d);
/* HD audio controller, interrupt: PIRQG */
pci_write_config_byte(dev, 0x8c, 0x0e);
/* Serial ATA interrupt: PIRQD */
pci_write_config_byte(dev, 0x8d, 0x0b);
/* SMB interrupt: PIRQH */
pci_write_config_byte(dev, 0x8e, 0x0f);
/* PMU ACPI SCI interrupt: PIRQH */
pci_write_config_byte(dev, 0x8f, 0x0f);
/* Primary PATA IDE IRQ: 14
* Secondary PATA IDE IRQ: 15
*/
pci_write_config_byte(dev, 0x44, 0x3d);
pci_write_config_byte(dev, 0x75, 0x0f);
/* Set IRQ14 and IRQ15 to legacy IRQs */
pci_read_config_word(dev, 0x46, &temp);
temp |= 0xc000;
pci_write_config_word(dev, 0x46, temp);
/* Set i8259 interrupt trigger
* IRQ 3: Level
* IRQ 4: Level
* IRQ 5: Level
* IRQ 6: Level
* IRQ 7: Level
* IRQ 9: Level
* IRQ 10: Level
* IRQ 11: Level
* IRQ 12: Level
* IRQ 14: Edge
* IRQ 15: Edge
*/
outb(0xfa, 0x4d0);
outb(0x1e, 0x4d1);
}
static void __devinit quirk_uli5288(struct pci_dev *dev)
{
unsigned char c;
pci_read_config_byte(dev,0x83,&c);
c |= 0x80;
pci_write_config_byte(dev, 0x83, c);
pci_write_config_byte(dev, 0x09, 0x01);
pci_write_config_byte(dev, 0x0a, 0x06);
pci_read_config_byte(dev,0x83,&c);
c &= 0x7f;
pci_write_config_byte(dev, 0x83, c);
pci_read_config_byte(dev,0x84,&c);
c |= 0x01;
pci_write_config_byte(dev, 0x84, c);
}
static void __devinit quirk_uli5229(struct pci_dev *dev)
{
unsigned short temp;
pci_write_config_word(dev, 0x04, 0x0405);
pci_read_config_word(dev, 0x4a, &temp);
temp |= 0x1000;
pci_write_config_word(dev, 0x4a, temp);
}
static void __devinit early_uli5249(struct pci_dev *dev)
{
unsigned char temp;
pci_write_config_word(dev, 0x04, 0x0007);
pci_read_config_byte(dev, 0x7c, &temp);
pci_write_config_byte(dev, 0x7c, 0x80);
pci_write_config_byte(dev, 0x09, 0x01);
pci_write_config_byte(dev, 0x7c, temp);
dev->class |= 0x1;
}
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, 0x1575, quirk_ali1575);
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, 0x5288, quirk_uli5288);
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, 0x5229, quirk_uli5229);
DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_AL, 0x5249, early_uli5249);
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