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openwrt/target/linux/coldfire/patches/039-Add-PCI-bus-driver-for-M54455EVB-and-M547X_8X.patch
Imre Kaloz 880de62f91 switch to 2.6.38 
SVN-Revision: 31546
2012-05-01 07:00:17 +00:00

3052 lines
76 KiB
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From 3f21ef5f7b72937a1ae293e8ba6ebd0bb0b175e3 Mon Sep 17 00:00:00 2001
From: Jingchang Lu <b35083@freescale.com>
Date: Thu, 4 Aug 2011 09:59:49 +0800
Subject: [PATCH 39/52] Add PCI bus driver for M54455EVB and M547X_8X
Signed-off-by: Jingchang Lu <b35083@freescale.com>
---
arch/m68k/coldfire/m5445x/devices.c | 9 +
arch/m68k/coldfire/m5445x/mcf5445x-pci.c | 721 +++++++++++++++++++++
arch/m68k/coldfire/m5445x/pci.c | 247 +++++++
arch/m68k/coldfire/m547x/pci.c | 1023 ++++++++++++++++++++++++++++++
arch/m68k/coldfire/m547x/pci_dummy.S | 45 ++
arch/m68k/include/asm/5445x_pci.h | 111 ++++
arch/m68k/include/asm/548x_pci.h | 99 +++
arch/m68k/include/asm/pci.h | 6 +
arch/m68k/kernel/bios32_mcf548x.c | 632 ++++++++++++++++++
drivers/pci/Makefile | 1 +
drivers/pci/access.c | 18 +
drivers/pci/setup-bus.c | 6 +
lib/iomap.c | 4 +
13 files changed, 2922 insertions(+), 0 deletions(-)
create mode 100644 arch/m68k/coldfire/m5445x/mcf5445x-pci.c
create mode 100644 arch/m68k/coldfire/m5445x/pci.c
create mode 100644 arch/m68k/coldfire/m547x/pci.c
create mode 100644 arch/m68k/coldfire/m547x/pci_dummy.S
create mode 100644 arch/m68k/include/asm/5445x_pci.h
create mode 100644 arch/m68k/include/asm/548x_pci.h
create mode 100644 arch/m68k/kernel/bios32_mcf548x.c
--- a/arch/m68k/coldfire/m5445x/devices.c
+++ b/arch/m68k/coldfire/m5445x/devices.c
@@ -25,12 +25,15 @@
#include <linux/spi/mmc_spi.h>
#endif
+#include <linux/pci.h>
+
#include <asm/coldfire.h>
#include <asm/mcfsim.h>
#include <asm/mcfuart.h>
#include <asm/mcfqspi.h>
#include <asm/mcfdspi.h>
#include <asm/cf_io.h>
+#include <asm/pci.h>
/* ATA Interrupt */
#define IRQ_ATA (64 + 64 + 54)
@@ -517,6 +520,12 @@ void m5445x_uarts_init(void)
static int __init init_BSP(void)
{
+#ifndef CONFIG_M54455_PCI_initcall
+#if defined(CONFIG_M54455) && defined(CONFIG_PCI)
+ pci_init();
+ pcibios_init();
+#endif
+#endif
m5445x_uarts_init();
platform_add_devices(m5445x_devices, ARRAY_SIZE(m5445x_devices));
return 0;
--- /dev/null
+++ b/arch/m68k/coldfire/m5445x/mcf5445x-pci.c
@@ -0,0 +1,721 @@
+/*
+ * arch/m68k/coldfire/m5445x/mcf5445x-pci.c
+ *
+ * Coldfire M5445x specific PCI implementation.
+ *
+ * Copyright (C) 2007-2011 Freescale Semiconductor, Inc. All Rights Reserved.
+ * Kurt Mahan <kmahan@freescale.com>
+ */
+
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/pci.h>
+
+#include <asm/mcfsim.h>
+#include <asm/pci.h>
+#include <asm/irq.h>
+#include <asm/mcf5445x_pciarb.h>
+#include <asm/mcf5445x_pci.h>
+#include <asm/cf_io.h>
+/*
+ * Layout MCF5445x to PCI memory mappings:
+ *
+ * WIN MCF5445x PCI TYPE
+ * --- -------- --- ----
+ * [0] 0xA0000000 -> 0xACFFFFFF 0xA0000000 -> 0xACFFFFFF MEM
+ * [1] 0xAC000000 -> 0xAEFFFFFF 0xAC000000 -> 0xAEFFFFFF IO
+ * [2] 0xAF000000 -> 0xAFFFFFFF 0xAF000000 -> 0xAFFFFFFF CONFIG
+ */
+
+void __iomem *pci_mem_map;
+unsigned long pci_mem_mapsize = 256 * 1024 * 1024;
+
+#define MCF5445X_PCI_MEM_BASE ((unsigned int)pci_mem_map)
+#define MCF5445X_PCI_MEM_BASE_PHY 0xA0000000
+#define MCF5445X_PCI_MEM_SIZE 0x0C000000
+
+#define MCF5445X_PCI_IO_BASE \
+ (MCF5445X_PCI_MEM_BASE + MCF5445X_PCI_MEM_SIZE)
+#define MCF5445X_PCI_IO_SIZE 0x03000000
+
+#define MCF5445X_PCI_CONFIG_BASE \
+ (MCF5445X_PCI_IO_BASE + MCF5445X_PCI_IO_SIZE)
+#define MCF5445X_PCI_CONFIG_SIZE 0x01000000
+
+#define HOST_IO_BASE \
+ (MCF5445X_PCI_MEM_BASE + MCF5445X_PCI_MEM_SIZE)
+#define PCI_IO_MASK (MCF5445X_PCI_IO_SIZE - 1)
+
+#undef DEBUG
+#ifdef DEBUG
+# define DBG(x...) printk(x)
+#else
+# define DBG(x...)
+#endif
+
+/* PCI Bus memory resource block */
+struct resource pci_iomem_resource = {
+ .name = "PCI memory space",
+ .flags = IORESOURCE_MEM,
+};
+
+/* PCI Bus ioport resource block */
+struct resource pci_ioport_resource = {
+ .name = "PCI I/O space",
+ .flags = IORESOURCE_IO,
+};
+
+/*
+ * The M54455EVB multiplexes all the PCI interrupts via
+ * the FPGA and routes them to a single interrupt. The
+ * PCI spec requires all PCI interrupt routines be smart
+ * enough to sort out their own interrupts.
+ * The interrupt source from the FPGA is configured
+ * to EPORT 3.
+ */
+#define MCF5445X_PCI_IRQ 0x43
+
+#define PCI_SLOTS 4
+
+/*
+ * FPGA Info
+ */
+#define FPGA_PCI_IRQ_ENABLE (u32 *)0x09000000
+#define FPGA_PCI_IRQ_STATUS (u32 *)0x09000004
+#define FPGA_PCI_IRQ_ROUTE (u32 *)0x0900000c
+#define FPGA_SEVEN_LED (u32 *)0x09000014
+
+
+/*
+ * mcf5445x_conf_device(struct pci_dev *dev)
+ *
+ * Machine dependent Configure the given device.
+ *
+ * Parameters:
+ *
+ * dev - the pci device.
+ */
+void
+mcf5445x_conf_device(struct pci_dev *dev)
+{
+ set_fpga(FPGA_PCI_IRQ_ENABLE, 0x0f);
+}
+
+/*
+ * int mcf5445x_pci_config_read(unsigned int seg, unsigned int bus,
+ * unsigned int devfn, int reg,
+ * u32 *value)
+ *
+ * Read from PCI configuration space.
+ *
+ */
+int mcf5445x_pci_config_read(unsigned int seg, unsigned int bus,
+ unsigned int devfn, int reg, int len, u32 *value)
+{
+ u32 addr = MCF_PCI_PCICAR_BUSNUM(bus) |
+ MCF_PCI_PCICAR_DEVNUM(PCI_SLOT(devfn)) |
+ MCF_PCI_PCICAR_FUNCNUM(PCI_FUNC(devfn)) |
+ MCF_PCI_PCICAR_DWORD(reg) |
+ MCF_PCI_PCICAR_E;
+
+ if ((bus > 255) || (devfn > 255) || (reg > 255)) {
+ *value = -1;
+ return -EINVAL;
+ }
+
+ /* setup for config mode */
+ MCF_PCI_PCICAR = addr;
+ __asm__ __volatile__("nop");
+
+ switch (len) {
+ case 1:
+ *value = *(volatile u8 *)(MCF5445X_PCI_CONFIG_BASE+(reg&3));
+ break;
+ case 2:
+ *value = le16_to_cpu(*(volatile u16 *)
+ (MCF5445X_PCI_CONFIG_BASE + (reg&2)));
+ break;
+ case 4:
+ *value = le32_to_cpu(*(volatile u32 *)
+ (MCF5445X_PCI_CONFIG_BASE));
+ break;
+ }
+
+ /* clear config mode */
+ MCF_PCI_PCICAR = ~MCF_PCI_PCICAR_E;
+ __asm__ __volatile__("nop");
+
+ return 0;
+}
+
+/*
+ * int mcf5445x_pci_config_write(unsigned int seg, unsigned int bus,
+ * unsigned int devfn, int reg,
+ * u32 *value)
+ *
+ * Write to PCI configuration space
+ */
+int mcf5445x_pci_config_write(unsigned int seg, unsigned int bus,
+ unsigned int devfn, int reg, int len, u32 value)
+{
+ u32 addr = MCF_PCI_PCICAR_BUSNUM(bus) |
+ MCF_PCI_PCICAR_DEVNUM(PCI_SLOT(devfn)) |
+ MCF_PCI_PCICAR_FUNCNUM(PCI_FUNC(devfn)) |
+ MCF_PCI_PCICAR_DWORD(reg) |
+ MCF_PCI_PCICAR_E;
+
+ if ((bus > 255) || (devfn > 255) || (reg > 255))
+ return -EINVAL;
+
+ /* setup for config mode */
+ MCF_PCI_PCICAR = addr;
+ __asm__ __volatile__("nop");
+
+ switch (len) {
+ case 1:
+ *(volatile u8 *)(MCF5445X_PCI_CONFIG_BASE+(reg&3)) = (u8)value;
+ break;
+ case 2:
+ *(volatile u16 *)(MCF5445X_PCI_CONFIG_BASE+(reg&2)) =
+ cpu_to_le16((u16)value);
+ break;
+ case 4:
+ *(volatile u32 *)(MCF5445X_PCI_CONFIG_BASE) =
+ cpu_to_le32(value);
+ break;
+ }
+
+ /* clear config mode */
+ MCF_PCI_PCICAR = ~MCF_PCI_PCICAR_E;
+ __asm__ __volatile__("nop");
+
+ return 0;
+}
+
+/* hardware operations */
+static struct pci_raw_ops mcf5445x_pci_ops = {
+ .read = mcf5445x_pci_config_read,
+ .write = mcf5445x_pci_config_write,
+};
+
+/************************************************************************/
+
+/*
+ * u8 pci_inb()
+ *
+ * Read a byte at specified address from I/O space
+ */
+unsigned char pci_inb(long addr)
+{
+ char value;
+
+ value = *(volatile unsigned char *) (HOST_IO_BASE |
+ (addr & PCI_IO_MASK));
+ DBG("PCI: inb addr=0x%08X, value=0x%02X\n", addr, value);
+
+ return (unsigned char) value;
+}
+
+
+/*
+ * u16 pci_inw()
+ *
+ * Read a word at specified address from I/O space
+ */
+unsigned short pci_inw(long addr)
+{
+ short value;
+ volatile unsigned short *ptr;
+
+ ptr = (volatile unsigned short *) (HOST_IO_BASE | (addr & PCI_IO_MASK));
+ value = le16_to_cpu(*ptr);
+
+ DBG("PCI: inw addr=0x%08X, value=0x%04X\n", addr, value);
+ return (unsigned short) value;
+}
+
+/*
+ * u16 pci_raw_inw()
+ *
+ * Read a raw word at specified address from I/O space
+ */
+unsigned short pci_raw_inw(long addr)
+{
+ short value;
+ volatile unsigned short *ptr;
+
+ ptr = (volatile unsigned short *) (HOST_IO_BASE | (addr & PCI_IO_MASK));
+ value = *ptr;
+
+ DBG("PCI: raw_inw addr=0x%08X, value=0x%04X\n", addr, value);
+ return (unsigned short) value;
+}
+
+/*
+ * u32 pci_inl()
+ *
+ * Read a dword at specified address from I/O space
+ */
+unsigned long pci_inl(long addr)
+{
+ long value;
+ volatile unsigned long *ptr;
+
+ ptr = (volatile unsigned long *) (HOST_IO_BASE | (addr & PCI_IO_MASK));
+ value = le32_to_cpu(*ptr);
+
+ DBG("PCI: inl addr=0x%08X, value=0x%08X\n", addr, value);
+ return (unsigned long) value;
+}
+
+/*
+ * u32 pci_raw_inl()
+ *
+ * Read a raw dword at specified address from I/O space
+ */
+unsigned long pci_raw_inl(long addr)
+{
+ long value;
+ volatile unsigned long *ptr;
+
+ ptr = (volatile unsigned long *) (HOST_IO_BASE | (addr & PCI_IO_MASK));
+ value = *ptr;
+
+ DBG("PCI: raw_inl addr=0x%08X, value=0x%08X\n", addr, value);
+ return (unsigned long) value;
+}
+
+/*
+ * void pci_outb()
+ *
+ * Write a byte value at specified address to I/O space
+ */
+void pci_outb(unsigned char value, long addr)
+{
+
+ *(volatile unsigned char *) (HOST_IO_BASE | (addr & PCI_IO_MASK)) \
+ = value;
+ DBG("PCI: outb addr=0x%08X, value=0x%02X\n", addr, value);
+}
+
+
+/*
+ * void pci_outw()
+ *
+ * Write a word value at specified address to I/O space
+ */
+void pci_outw(volatile unsigned short value, volatile long addr)
+{
+ volatile unsigned short *ptr;
+
+ ptr = (volatile unsigned short *) (HOST_IO_BASE | (addr & PCI_IO_MASK));
+ *ptr = cpu_to_le16(value);
+ DBG("PCI: outw addr=0x%08X, value=0x%04X\n", addr, value);
+}
+
+/*
+ * void pci_raw_outw()
+ *
+ * Write a raw word value at specified address to I/O space
+ */
+void pci_raw_outw(volatile unsigned short value, volatile long addr)
+{
+ volatile unsigned short *ptr;
+
+ ptr = (volatile unsigned short *) (HOST_IO_BASE | (addr & PCI_IO_MASK));
+ *ptr = value;
+ DBG("PCI: raw_outw addr=0x%08X, value=0x%04X\n", addr, value);
+}
+
+/*
+ * void pci_outl()
+ *
+ * Write a long word value at specified address to I/O space
+ */
+void pci_outl(volatile unsigned long value, volatile long addr)
+{
+ volatile unsigned long *ptr;
+
+ ptr = (volatile unsigned long *)(HOST_IO_BASE | (addr & PCI_IO_MASK));
+ *ptr = cpu_to_le32(value);
+ DBG("PCI: outl addr=0x%08X, value=0x%08X\n", addr, value);
+}
+
+/*
+ * void pci_raw_outl()
+ *
+ * Write a raw long word value at specified address to I/O space
+ */
+void pci_raw_outl(volatile unsigned long value, volatile long addr)
+{
+ volatile unsigned long *ptr;
+
+ ptr = (volatile unsigned long *)(HOST_IO_BASE | (addr & PCI_IO_MASK));
+ *ptr = value;
+ DBG("PCI: raw_outl addr=0x%08X, value=0x%08X\n", addr, value);
+}
+
+/*
+ * void pci_insb()
+ *
+ * Read several byte values from specified I/O port
+ */
+void pci_insb(volatile unsigned char *addr, unsigned char *buf, int len)
+{
+ for (; len--; buf++)
+ *buf = pci_inb((unsigned long)addr);
+ DBG("PCI: pci_insb addr=0x%08X, buf=%p, len=%d\n", addr, buf, len);
+}
+
+
+/*
+ * void pci_insw()
+ *
+ * Read several word values from specified I/O port
+ */
+void pci_insw(volatile unsigned short *addr, unsigned short *buf, int len)
+{
+ for (; len--; buf++)
+ *buf = pci_inw((unsigned long)addr);
+ DBG("PCI: pci_insw addr=0x%08X, buf=%p, len=%d\n", addr, buf, len);
+}
+
+/*
+ * void pci_insl()
+ *
+ * Read several dword values from specified I/O port
+ */
+void pci_insl(volatile unsigned long *addr, unsigned long *buf, int len)
+{
+ for (; len--; buf++)
+ *buf = pci_inl((unsigned long)addr);
+ DBG("PCI: pci_insl addr=0x%08X, buf=%p, len=%d\n", addr, buf, len);
+}
+
+/*
+ * void pci_outsb()
+ *
+ * Write several byte values to specified I/O port
+ */
+void pci_outsb(volatile unsigned char *addr, const unsigned char *buf, int len)
+{
+ for (; len--; buf++)
+ pci_outb((unsigned long)addr, *buf);
+ DBG("PCI: pci_outsb addr=0x%08X, buf=%p, len=%d\n", addr, buf, len);
+}
+
+/*
+ * void pci_outsw()
+ *
+ * Write several word values to specified I/O port
+ */
+void
+pci_outsw(volatile unsigned short *addr, const unsigned short *buf, int len)
+{
+ for (; len--; buf++)
+ pci_outw((unsigned long)addr, *buf);
+ DBG("PCI: pci_outsw addr=0x%08X, buf=%p, len=%d\n", addr, buf, len);
+}
+
+/*
+ * void pci_outsl()
+ *
+ * Write several dword values to specified I/O port
+ */
+void pci_outsl(volatile unsigned long *addr, const unsigned long *buf, int len)
+{
+ for (; len--; buf++)
+ pci_outl((unsigned long)addr, *buf);
+ DBG("PCI: pci_outsl addr=0x%08X, buf=%p, len=%d\n", addr, buf, len);
+}
+/*
+ * irqreturn_t mcf5445x_pci_interrupt( int irq, void *dev)
+ *
+ * PCI controller interrupt handler.
+ */
+static irqreturn_t
+mcf5445x_pci_interrupt(int irq, void *dev)
+{
+ u32 status = MCF_PCI_PCIGSCR;
+#ifdef DEBUG
+ printk(KERN_INFO "PCI: Controller irq status=0x%08x\n", status);
+#endif
+ /* clear */
+ MCF_PCI_PCIGSCR = status;
+
+ return IRQ_HANDLED;
+}
+
+/*
+ * irqreturn_t mcf5445x_pci_arb_interrupt( int irq, void *dev)
+ *
+ * PCI Arbiter interrupt handler.
+ */
+static irqreturn_t
+mcf5445x_pci_arb_interrupt(int irq, void *dev)
+{
+ u32 status = MCF_PCIARB_PASR;
+#ifdef DEBUG
+ printk(KERN_INFO "PCI: Arbiter irq status=0x%08x\n", status);
+#endif
+ /* clear */
+ MCF_PCIARB_PASR = status;
+ return IRQ_HANDLED;
+}
+
+/*
+ * struct pci_bus_info *init_mcf5445x_pci(void)
+ *
+ * Machine specific initialisation:
+ *
+ * - Allocate and initialise a 'pci_bus_info' structure
+ * - Initialize hardware
+ *
+ * Result: pointer to 'pci_bus_info' structure.
+ */
+int __init
+init_mcf5445x_pci(void)
+{
+ /*
+ * Initialize the PCI core
+ */
+ printk(KERN_INFO "init_mcf5445x_pci\n");
+
+ /* pci memory mapping */
+ pci_mem_map = ioremap(MCF5445X_PCI_MEM_BASE_PHY, pci_mem_mapsize);
+ if (!pci_mem_map) {
+ printk(KERN_ERR "PCI memory map failed by ioremap!\n");
+ return -ENOMEM;
+ }
+ printk(KERN_INFO "MCF5445X_PCI_MEM_BASE value is 0x%x\n", \
+ MCF5445X_PCI_MEM_BASE);
+
+ /* Initialize pci resource */
+ pci_iomem_resource.start = MCF5445X_PCI_MEM_BASE;
+ pci_iomem_resource.end = MCF5445X_PCI_MEM_BASE + \
+ MCF5445X_PCI_MEM_SIZE - 1;
+
+ pci_ioport_resource.start = MCF5445X_PCI_IO_BASE;
+ pci_ioport_resource.end = MCF5445X_PCI_IO_BASE + \
+ MCF5445X_PCI_IO_SIZE - 1;
+
+ /*
+ * Must Reset!!! If bootloader has PCI enabled, it will cause
+ * problem in linux when it tries to configure/find resources
+ * for the pci devices
+ */
+ MCF_PCI_PCIGSCR = 1;
+
+ /* arbitration controller */
+ MCF_PCIARB_PACR = MCF_PCIARB_PACR_INTMPRI |
+ MCF_PCIARB_PACR_EXTMPRI(0x0f) |
+ MCF_PCIARB_PACR_INTMINTEN |
+ MCF_PCIARB_PACR_EXTMINTEN(0x0f);
+
+ /* pci pin assignment regs */
+#if defined(CONFIG_PATA_FSL) || defined(CONFIG_PATA_FSL_MODULE)
+ MCF_GPIO_PAR_PCI = MCF_GPIO_PAR_PCI_GNT0 |
+ MCF_GPIO_PAR_PCI_GNT1 |
+ MCF_GPIO_PAR_PCI_GNT2 |
+ MCF_GPIO_PAR_PCI_GNT3_GNT3 |
+ MCF_GPIO_PAR_PCI_REQ0 |
+ MCF_GPIO_PAR_PCI_REQ1 |
+ MCF_GPIO_PAR_PCI_REQ2 |
+ MCF_GPIO_PAR_PCI_REQ3_REQ3;
+
+ MCF_GPIO_PAR_PCI = (MCF_GPIO_PAR_PCI &
+ (MCF_GPIO_PAR_PCI_GNT3_MASK &
+ MCF_GPIO_PAR_PCI_REQ3_MASK)) |
+ MCF_GPIO_PAR_PCI_GNT3_ATA_DMACK |
+ MCF_GPIO_PAR_PCI_REQ3_ATA_INTRQ;
+#else
+ MCF_GPIO_PAR_PCI = MCF_GPIO_PAR_PCI_GNT0 |
+ MCF_GPIO_PAR_PCI_GNT1 |
+ MCF_GPIO_PAR_PCI_GNT2 |
+ MCF_GPIO_PAR_PCI_GNT3_GNT3 |
+ MCF_GPIO_PAR_PCI_REQ0 |
+ MCF_GPIO_PAR_PCI_REQ1 |
+ MCF_GPIO_PAR_PCI_REQ2 |
+ MCF_GPIO_PAR_PCI_REQ3_REQ3;
+#endif
+ /* target control reg */
+ MCF_PCI_PCITCR = MCF_PCI_PCITCR_P |
+ MCF_PCI_PCITCR_WCT(8);
+
+ /* PCI MEM address */
+ MCF_PCI_PCIIW0BTAR = MCF5445X_PCI_MEM_BASE_PHY |
+ (MCF5445X_PCI_MEM_BASE >> 16);
+
+ /* PCI MEM address */
+ MCF_PCI_PCIIW1BTAR = (MCF5445X_PCI_MEM_BASE_PHY +
+ MCF5445X_PCI_MEM_SIZE)
+ | (MCF5445X_PCI_IO_BASE >> 16);
+
+ /* PCI IO address */
+ MCF_PCI_PCIIW2BTAR = (MCF5445X_PCI_MEM_BASE_PHY +
+ MCF5445X_PCI_MEM_SIZE + MCF5445X_PCI_IO_SIZE)
+ | (MCF5445X_PCI_CONFIG_BASE >> 16);
+
+ /* window control */
+ MCF_PCI_PCIIWCR = MCF_PCI_PCIIWCR_WINCTRL0_ENABLE |
+ MCF_PCI_PCIIWCR_WINCTRL0_MEMREAD |
+ MCF_PCI_PCIIWCR_WINCTRL1_ENABLE |
+ MCF_PCI_PCIIWCR_WINCTRL1_IO |
+ MCF_PCI_PCIIWCR_WINCTRL2_ENABLE |
+ MCF_PCI_PCIIWCR_WINCTRL2_IO;
+
+ /* initiator control reg */
+ MCF_PCI_PCIICR = 0;
+
+ /* type 0 - command */
+ MCF_PCI_PCISCR = MCF_PCI_PCISCR_MW | /* mem write/inval */
+ MCF_PCI_PCISCR_B | /* bus master enable */
+ MCF_PCI_PCISCR_MA | /* clear master abort error */
+ MCF_PCI_PCISCR_M; /* mem access enable */
+
+ /* type 0 - config reg */
+ MCF_PCI_PCICR1 = MCF_PCI_PCICR1_CACHELINESIZE(4) |
+ MCF_PCI_PCICR1_LATTIMER(0xFF);
+ /* type 0 - config 2 reg */
+ MCF_PCI_PCICR2 = 0;
+
+ /* target control reg */
+ MCF_PCI_PCITCR2 = MCF_PCI_PCITCR2_B0E | MCF_PCI_PCITCR2_B5E;
+
+ /* translate addresses from PCI[0] to CF[SDRAM] */
+ MCF_PCI_PCITBATR0 = 0xFC000000 | MCF_PCI_PCITBATR5_EN;
+ MCF_PCI_PCITBATR5 = MCF_RAMBAR1 | MCF_PCI_PCITBATR5_EN;
+
+ /* inbound window for memory */
+ MCF_PCI_PCIBAR0 = 0xFC000000;
+ MCF_PCI_PCIBAR5 = MCF_RAMBAR1;
+
+ /* setup controller interrupt handlers */
+ if (request_irq(55+128, mcf5445x_pci_interrupt, IRQF_SHARED,
+ "PCI Controller", NULL))
+ printk(KERN_ERR "PCI: Unable to register controller irq\n");
+
+ if (request_irq(56+128, mcf5445x_pci_arb_interrupt, IRQF_SHARED,
+ "PCI Arbiter", NULL))
+ printk(KERN_ERR "PCI: Unable to register arbiter irq\n");
+
+ /* global control - clear reset bit */
+ MCF_PCI_PCIGSCR = MCF_PCI_PCIGSCR_SEE |
+ MCF_PCI_PCIGSCR_PEE;
+
+ /* let everything settle */
+ udelay(1000);
+
+ /* allocate bus ioport resource */
+ if (request_resource(&ioport_resource, &pci_ioport_resource) < 0)
+ printk(KERN_ERR "PCI: Unable to alloc ioport resource\n");
+
+ /* allocate bus iomem resource */
+ if (request_resource(&iomem_resource, &pci_iomem_resource) < 0)
+ printk(KERN_ERR "PCI: Unable to alloc iomem resource\n");
+
+ /* setup FPGA to route PCI to IRQ3(67), SW7 to IRQ7, SW6 to IRQ4 */
+ set_fpga(FPGA_PCI_IRQ_ENABLE, 0x00000000);
+ set_fpga(FPGA_PCI_IRQ_ROUTE, 0x00000039);
+ set_fpga(FPGA_SEVEN_LED, 0x000000FF);
+
+ raw_pci_ops = &mcf5445x_pci_ops;
+#ifdef DEBUG
+ mcf5445x_pci_dumpregs();
+#endif
+ return 0;
+}
+
+/*
+ * DEBUGGING
+ */
+
+#ifdef DEBUG
+struct regdump {
+ u32 addr;
+ char regname[16];
+};
+
+struct regdump type0regs[] = {
+ { 0xfc0a8000, "PCIIDR" },
+ { 0xfc0a8004, "PCISCR" },
+ { 0xfc0a8008, "PCICCRIR" },
+ { 0xfc0a800c, "PCICR1" },
+ { 0xfc0a8010, "PCIBAR0" },
+ { 0xfc0a8014, "PCIBAR1" },
+ { 0xfc0a8018, "PCIBAR2" },
+ { 0xfc0a801c, "PCIBAR3" },
+ { 0xfc0a8020, "PCIBAR4" },
+ { 0xfc0a8024, "PCIBAR5" },
+ { 0xfc0a8028, "PCICCPR" },
+ { 0xfc0a802c, "PCISID" },
+ { 0xfc0a8030, "PCIERBAR" },
+ { 0xfc0a8034, "PCICPR" },
+ { 0xfc0a803c, "PCICR2" },
+ { 0, "" }
+};
+
+struct regdump genregs[] = {
+ { 0xfc0a8060, "PCIGSCR" },
+ { 0xfc0a8064, "PCITBATR0" },
+ { 0xfc0a8068, "PCITBATR1" },
+ { 0xfc0a806c, "PCITCR1" },
+ { 0xfc0a8070, "PCIIW0BTAR" },
+ { 0xfc0a8074, "PCIIW1BTAR" },
+ { 0xfc0a8078, "PCIIW2BTAR" },
+ { 0xfc0a8080, "PCIIWCR" },
+ { 0xfc0a8084, "PCIICR" },
+ { 0xfc0a8088, "PCIISR" },
+ { 0xfc0a808c, "PCITCR2" },
+ { 0xfc0a8090, "PCITBATR0" },
+ { 0xfc0a8094, "PCITBATR1" },
+ { 0xfc0a8098, "PCITBATR2" },
+ { 0xfc0a809c, "PCITBATR3" },
+ { 0xfc0a80a0, "PCITBATR4" },
+ { 0xfc0a80a4, "PCITBATR5" },
+ { 0xfc0a80a8, "PCIINTR" },
+ { 0xfc0a80f8, "PCICAR" },
+ { 0, "" }
+};
+
+struct regdump arbregs[] = {
+ { 0xfc0ac000, "PACR" },
+ { 0xfc0ac004, "PASR" }, /* documentation error */
+ { 0, "" }
+};
+
+/*
+ * void mcf5445x_pci_dumpregs()
+ *
+ * Dump out all the PCI registers
+ */
+void
+mcf5445x_pci_dumpregs(void)
+{
+ struct regdump *reg;
+
+ printk(KERN_INFO "*** MCF5445x PCI TARGET 0 REGISTERS ***\n");
+
+ reg = type0regs;
+ while (reg->addr) {
+ printk(KERN_INFO "0x%08x 0x%08x %s\n", reg->addr,
+ *((u32 *)reg->addr), reg->regname);
+ reg++;
+ }
+
+ printk(KERN_INFO "\n*** MCF5445x PCI GENERAL REGISTERS ***\n");
+ reg = genregs;
+ while (reg->addr) {
+ printk(KERN_INFO "0x%08x 0x%08x %s\n", reg->addr,
+ *((u32 *)reg->addr), reg->regname);
+ reg++;
+ }
+ printk(KERN_INFO "\n*** MCF5445x PCI ARBITER REGISTERS ***\n");
+ reg = arbregs;
+ while (reg->addr) {
+ printk(KERN_INFO "0x%08x 0x%08x %s\n", reg->addr,
+ *((u32 *)reg->addr), reg->regname);
+ reg++;
+ }
+}
+#endif /* DEBUG */
--- /dev/null
+++ b/arch/m68k/coldfire/m5445x/pci.c
@@ -0,0 +1,247 @@
+/*
+ * linux/arch/m68k/coldfire/m5445x/pci.c
+ *
+ * PCI initialization for Coldfire architectures.
+ *
+ * Currently Supported:
+ * M5445x
+ *
+ * Copyright (C) 2007-2011 Freescale Semiconductor, Inc. All Rights Reserved.
+ * Kurt Mahan <kmahan@freescale.com>
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/pci.h>
+
+#include <asm/mcfsim.h>
+#include <asm/pci.h>
+
+/* pci ops for reading/writing config */
+struct pci_raw_ops *raw_pci_ops;
+
+/* pci debug flag */
+static int debug_pci;
+
+static int
+pci_read(struct pci_bus *bus, unsigned int devfn, int where,
+ int size, u32 *value)
+{
+ return raw_pci_ops->read(0, bus->number, devfn, where, size, value);
+}
+
+static int
+pci_write(struct pci_bus *bus, unsigned int devfn, int where,
+ int size, u32 value)
+{
+ return raw_pci_ops->write(0, bus->number, devfn, where, size, value);
+}
+
+struct pci_ops pci_root_ops = {
+ .read = pci_read,
+ .write = pci_write,
+};
+
+/*
+ * pcibios_setup(char *)
+ *
+ * Initialize the pcibios based on cmd line params.
+ */
+char *
+pcibios_setup(char *str)
+{
+ if (!strcmp(str, "debug")) {
+ debug_pci = 1;
+ return NULL;
+ }
+ return str;
+}
+
+/*
+ * We need to avoid collisions with `mirrored' VGA ports
+ * and other strange ISA hardware, so we always want the
+ * addresses to be allocated in the 0x000-0x0ff region
+ * modulo 0x400.
+ *
+ * Why? Because some silly external IO cards only decode
+ * the low 10 bits of the IO address. The 0x00-0xff region
+ * is reserved for motherboard devices that decode all 16
+ * bits, so it's ok to allocate at, say, 0x2800-0x28ff,
+ * but we want to try to avoid allocating at 0x2900-0x2bff
+ * which might have be mirrored at 0x0100-0x03ff..
+ */
+resource_size_t
+pcibios_align_resource(void *data, const struct resource *res,
+ resource_size_t size, resource_size_t align)
+{
+ struct pci_dev *dev = data;
+ resource_size_t start = res->start;
+
+ if (res->flags & IORESOURCE_IO) {
+ if (size > 0x100)
+ printk(KERN_ERR "PCI: I/O Region %s/%d too large"
+ " (%ld bytes)\n", pci_name(dev),
+ dev->resource - res, (long int)size);
+
+ if (start & 0x3ff)
+ start = (start + 0x3ff) & ~0x3ff;
+ }
+
+ return start;
+}
+EXPORT_SYMBOL(pcibios_align_resource);
+
+/*
+ * Swizzle the device pin each time we cross a bridge
+ * and return the slot number.
+ */
+static u8 __devinit
+pcibios_swizzle(struct pci_dev *dev, u8 *pin)
+{
+ return 0;
+}
+
+/*
+ * Map a slot/pin to an IRQ.
+ */
+static int
+pcibios_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+{
+ return 0x43;
+}
+
+/*
+ * pcibios_update_irq(struct pci_dev *dev, int irq)
+ *
+ * Update a PCI interrupt.
+ */
+void
+pcibios_update_irq(struct pci_dev *dev, int irq)
+{
+ pci_write_config_byte(dev, PCI_INTERRUPT_LINE, irq);
+}
+
+/*
+ * pcibios_enable_device(struct pci_dev *dev, int mask)
+ *
+ * Enable a device on the PCI bus.
+ */
+int
+pcibios_enable_device(struct pci_dev *dev, int mask)
+{
+ u16 cmd, old_cmd;
+ int idx;
+ struct resource *r;
+
+ pci_read_config_word(dev, PCI_COMMAND, &cmd);
+ old_cmd = cmd;
+ for (idx = 0; idx < DEVICE_COUNT_RESOURCE; idx++) {
+ r = &dev->resource[idx];
+ if (!r->start && r->end) {
+ printk(KERN_ERR "PCI: Device %s not available because "
+ "of resource collisions\n", pci_name(dev));
+ return -EINVAL;
+ }
+ if (r->flags & IORESOURCE_IO)
+ cmd |= PCI_COMMAND_IO;
+ if (r->flags & IORESOURCE_MEM)
+ cmd |= PCI_COMMAND_MEMORY;
+ }
+ if (cmd != old_cmd) {
+ printk("PCI: Enabling device %s (%04x -> %04x)\n",
+ pci_name(dev), old_cmd, cmd);
+ pci_write_config_word(dev, PCI_COMMAND, cmd);
+#ifdef CONFIG_M54455
+ mcf5445x_conf_device(dev);
+#endif
+ }
+
+ return 0;
+}
+
+/*
+ * pcibios_fixup_bus(struct pci_bus *bus)
+ */
+void
+pcibios_fixup_bus(struct pci_bus *bus)
+{
+ struct pci_dev *dev = bus->self;
+
+ if (!dev) {
+ /* Root bus. */
+#ifdef CONFIG_M54455
+ bus->resource[0] = &pci_ioport_resource;
+ bus->resource[1] = &pci_iomem_resource;
+#endif
+ }
+}
+
+/*
+ * pcibios_init(void)
+ *
+ * Allocate/initialize low level pci bus/devices.
+ */
+#ifdef CONFIG_M54455_PCI_initcall
+static int __init
+#else
+int __init
+#endif
+pcibios_init(void)
+{
+ struct pci_bus *bus;
+
+ if (!raw_pci_ops) {
+ printk(KERN_WARNING "PCIBIOS: FATAL: NO PCI Hardware found\n");
+ return 0;
+ }
+
+ /* allocate and scan the (only) bus */
+ bus = pci_scan_bus_parented(NULL, 0, &pci_root_ops, NULL);
+
+ /* setup everything */
+ if (bus) {
+ /* compute the bridge window sizes */
+ pci_bus_size_bridges(bus);
+
+ /* (re)assign device resources */
+ pci_bus_assign_resources(bus);
+
+ /* add the bus to the system */
+ pci_bus_add_devices(bus);
+
+ /* fixup irqs */
+ pci_fixup_irqs(pcibios_swizzle, pcibios_map_irq);
+ }
+
+ return 0;
+}
+
+/*
+ * pci_init(void)
+ *
+ * Initialize the PCI Hardware.
+ */
+#ifdef CONFIG_M54455_PCI_initcall
+static int __init
+#else
+int __init
+#endif
+pci_init(void)
+{
+ printk(KERN_INFO "pci_init\n");
+#if defined(CONFIG_M54455)
+ init_mcf5445x_pci();
+#endif
+ if (!raw_pci_ops)
+ printk(KERN_ERR "PCI: FATAL: NO PCI Detected\n");
+
+ return 0;
+}
+
+#ifdef CONFIG_M54455_PCI_initcall
+/* low level hardware (first) */
+arch_initcall(pci_init);
+
+/* basic bios init (second) */
+subsys_initcall(pcibios_init);
+#endif
--- /dev/null
+++ b/arch/m68k/coldfire/m547x/pci.c
@@ -0,0 +1,1023 @@
+/*
+ * ColdFire 547x/548x PCI Host Controller functions
+ *
+ * Copyright (C) 2005-2011 Freescale Semiconductor, Inc. All Rights Reserved.
+ * Shrek Wu b16972@freescale.com
+ * This code is based on the 2.6.10 version of pci.c
+ *
+ * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/init.h>
+#include <linux/mm.h>
+#include <linux/string.h>
+#include <linux/pci.h>
+#include <linux/ioport.h>
+#include <linux/slab.h>
+#include <linux/version.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+
+#include <linux/dma-mapping.h>
+#include <asm/coldfire.h>
+#include <linux/io.h>
+#include <asm/m5485sim.h>
+#include <asm/m5485pci.h>
+#include <asm/irq.h>
+#include <linux/pci.h>
+#include <asm/virtconvert.h>
+
+
+#undef DEBUG
+/*define DEBUG*/
+#ifdef DEBUG
+/*#define DBG(x...) printk(KERN_DEBUG x)*/
+#define DBG(x...) printk(x)
+#else
+#define DBG(x...)
+#endif
+
+/*
+ * Bridge configration dafaults
+ */
+#define PCI_RETRIES 0
+#define PCI_CACHE_LINE 8
+#define PCI_MINGNT 1
+#define PCI_MAXLAT 42
+
+
+/*
+ * Initiator windows setting
+ */
+#define HOST_MEM_BASE 0xD0000000
+/* ColdFire Memory window base */
+#define PCI_MEM_BASE 0xD0000000
+/* PCI Memory window base */
+#define PCI_MEM_SIZE 0x08000000
+/* Memory window size (128M) */
+#define HOST_IO_BASE 0xD8000000
+/* ColdFire I/O window base */
+#define PCI_IO_BASE_ADDR 0x00000000
+/* PCI I/O window base */
+#define PCI_IO_SIZE 0x00010000
+/* I/O window size (64K) */
+/*#define HOST_CFG_BASE 0xD8000000*/
+#define HOST_CFG_BASE 0xD8008000
+/* ColdFire config window base */
+#define HOST_DMA_BASE CONFIG_SDRAM_BASE
+/* ColdFire PCI-DMA window base */
+#define PCI_HDR_BASE (MCF_MBAR+0xB00)
+/* ColdFire config registers */
+
+#define PCI_MEM_MASK (PCI_MEM_SIZE-1)
+#define PCI_IO_MASK (PCI_IO_SIZE-1)
+
+/* Macro to set initiator window */
+#define WxBAR(host_address, pci_address, size) \
+ (((host_address) & 0xff000000) | \
+ ((((size)-1) & 0xff000000) >> 8) | \
+ ((pci_address) & 0xff000000) >> 16)
+
+/*
+ * BIOS internal data
+ */
+static u8 revision; /* controller revision */
+
+/*
+ * Board specific setting
+ */
+const unsigned int irq_lines[] = { 5, 7 };
+
+#define N_SLOTS (sizeof(board_info) / sizeof(board_info[0]))
+#define N_IRQS (sizeof(irq_lines) / sizeof(irq_lines[0]))
+#define BRIDGE_SLOT 0
+
+const struct slotinfo {
+ unsigned char idsel; /* device number */
+ unsigned char irq; /* external IRQ */
+ unsigned char req; /* REQ line number */
+ unsigned char gnt; /* GNT line number */
+} board_info[] = {
+ {0, 0, 0, 0}, /* Bridge */
+ {17, 5, 1, 1}, /* Slot #1 */
+ {18, 5, 2, 2}, /* Slot #2 */
+ {20, 7, 3, 3}, /* Slot #3 */
+ {21, 7, 4, 4}, /* Slot #4 */
+};
+
+/************************************************************************/
+
+/*
+ * static int mk_conf_addr()
+ *
+ * Return type0 or type1 configuration address
+ * by the means of device address and PCI dword location
+ * 0 - for not existing slots
+ */
+static int mk_conf_addr(/*struct pci_dev *dev*/
+ struct pci_bus *bus, unsigned int devfn, int where)
+{
+ int slot, func, address, idsel, dev_fn;
+
+ if (bus->number) {
+ address = MCF_PCICAR_E | (bus->number << 16) |
+ (devfn << 8) | (where & 0xfc);
+ } else {
+ slot = PCI_SLOT(devfn);
+ if (slot > N_SLOTS || slot == BRIDGE_SLOT)
+ return 0;
+ else {
+ func = PCI_FUNC(devfn);
+ idsel = board_info[slot].idsel;
+
+ dev_fn = PCI_DEVFN(idsel, func);
+ address = MCF_PCICAR_E | (bus->number << 16) |
+ (dev_fn << 8) | (where & 0xfc);
+ }
+ }
+
+ return address;
+}
+
+/*
+ * static int read_config_byte()
+ *
+ * Read a byte from configuration space of specified device
+ */
+static int read_config_byte(/*struct pci_dev *dev*/
+ struct pci_bus *bus, unsigned int devfn, int where, u8 *value)
+{
+ int slot;
+ int address;
+ int result;
+
+ *value = 0xff;
+ result = PCIBIOS_SUCCESSFUL;
+
+ slot = PCI_SLOT(devfn);
+ if (slot == BRIDGE_SLOT) {
+ if (where <= 0x40)
+ *value = *(volatile u8 *) (PCI_HDR_BASE +
+ (where & 0xfc) + (where & 3));
+ else
+ *value = 0;
+ } else {
+ address = mk_conf_addr(bus, devfn, where);
+ if (!address)
+ result = PCIBIOS_DEVICE_NOT_FOUND;
+ else {
+ MCF_PCICAR = address;
+ __asm__ __volatile__("nop");
+ *value = *(volatile u8 *) (HOST_CFG_BASE + (where & 3));
+ }
+ }
+ __asm("tpf");
+ MCF_PCICAR &= ~MCF_PCICAR_E;
+ DBG("PCI: read_config_byte bus=%d, dev=%d, fn=%d,"
+ " addr=0x%02X, val=0x%02X, ret=%02X\n",
+ bus->number, PCI_SLOT(devfn), PCI_FUNC(devfn), where, *value, result);
+
+ return result;
+}
+
+/*
+ * static int read_config_word()
+ *
+ * Read a word from configuration space of specified device
+ */
+static int read_config_word(/*struct pci_dev *dev*/
+ struct pci_bus *bus, unsigned int devfn, int where, u16 *value)
+{
+ int slot;
+ int address;
+ int result;
+
+ *value = 0xffff;
+ result = PCIBIOS_SUCCESSFUL;
+
+ if (where & 0x1)
+ result = PCIBIOS_BAD_REGISTER_NUMBER;
+ else {
+ slot = PCI_SLOT(devfn);
+ if (slot == BRIDGE_SLOT) {
+ if (where <= 0x3f)
+ *value =
+ *(volatile u16 *) (PCI_HDR_BASE +
+ (where & 0xfc) + (where & 2));
+ else
+ *value = 0;
+ } else {
+ address = mk_conf_addr(bus, devfn, where);
+ if (!address)
+ result = PCIBIOS_DEVICE_NOT_FOUND;
+ else {
+ MCF_PCICAR = address;
+ __asm__ __volatile__("nop");
+ *value = le16_to_cpu(*(volatile u16 *)
+ (HOST_CFG_BASE +
+ (where & 2)));
+ }
+ }
+ }
+ __asm("tpf");
+ MCF_PCICAR &= ~MCF_PCICAR_E;
+ DBG("PCI: read_config_word bus=%d, dev=%d, fn=%d,"
+ " addr=0x%02X, val=0x%04X ret=%02X\n",
+ bus->number, PCI_SLOT(devfn), PCI_FUNC(devfn), where, *value, result);
+
+ return result;
+}
+
+/*
+ * static int read_config_dword()
+ *
+ * Read a long word from configuration space of specified device
+ */
+static int read_config_dword(/*struct pci_dev *dev*/
+ struct pci_bus *bus, unsigned int devfn, int where, u32 *value)
+{
+ int slot;
+ int address;
+ int result;
+
+ *value = 0xffffffff;
+ result = PCIBIOS_SUCCESSFUL;
+
+ if (where & 0x3)
+ result = PCIBIOS_BAD_REGISTER_NUMBER;
+ else {
+ slot = PCI_SLOT(devfn);
+ if (slot == BRIDGE_SLOT) {
+ if (where <= 0x3d)
+ *value =
+ *(volatile u32 *) (PCI_HDR_BASE + where);
+ else
+ *value = 0;
+ __asm("tpf");
+ } else {
+ address = mk_conf_addr(bus, devfn, where);
+ if (!address)
+ result = PCIBIOS_DEVICE_NOT_FOUND;
+ else {
+ MCF_PCICAR = address;
+ __asm__ __volatile__("nop");
+ *value = le32_to_cpu(*(volatile u32 *)
+ (HOST_CFG_BASE));
+ __asm("tpf");
+ if (bus->number != 0 && revision < 1) {
+ volatile u32 temp;
+ MCF_PCICAR |= 0xff0000;
+ temp = *(volatile u32 *)
+ (HOST_CFG_BASE);
+ }
+ }
+ }
+ }
+
+ MCF_PCICAR &= ~MCF_PCICAR_E;
+ DBG("PCI: read_config_dword bus=%d, dev=%d, fn=%d, "
+ "addr=0x%02X, value=0x%08X ret=%02X\n",
+ bus->number, PCI_SLOT(devfn), PCI_FUNC(devfn), where, *value, result);
+
+ return result;
+}
+
+
+
+/*
+ * static int write_config_byte()
+ *
+ * Write a byte to configuration space of specified device
+ */
+static int write_config_byte(/*struct pci_dev *dev*/
+ struct pci_bus *bus, unsigned int devfn, int where, u8 value)
+{
+ int slot;
+ int address;
+ int result;
+
+ result = PCIBIOS_SUCCESSFUL;
+
+ slot = PCI_SLOT(devfn);
+ if (slot == BRIDGE_SLOT) {
+ if (where <= 0x40)
+ *(volatile u8 *) (PCI_HDR_BASE + (where & 0xfc)
+ + (where & 3)) = value;
+ } else {
+ address = mk_conf_addr(bus, devfn, where);
+ if (!address)
+ result = PCIBIOS_DEVICE_NOT_FOUND;
+ else {
+ MCF_PCICAR = address;
+ __asm__ __volatile__("tpf");
+ *(volatile u8 *) (HOST_CFG_BASE + (where & 3)) = value;
+ }
+ }
+ __asm("tpf");
+ MCF_PCICAR &= ~MCF_PCICAR_E;
+ pci_dummy_function();
+
+ DBG("PCI: write_config_byte bus=%d, dev=%d, fn=%d, "
+ "addr=0x%02X, value=0x%02X ret=%02X\n",
+ bus->number, PCI_SLOT(devfn), PCI_FUNC(devfn), where, value, result);
+
+ return result;
+}
+
+/*
+ * static int write_config_word()
+ *
+ * Write a word to configuration space of specified device
+ */
+static int write_config_word(/*struct pci_dev *dev*/
+ struct pci_bus *bus, unsigned int devfn, int where, u16 value)
+{
+ int slot;
+ int address;
+ int result;
+
+ result = PCIBIOS_SUCCESSFUL;
+
+ if (where & 0x1)
+ result = PCIBIOS_BAD_REGISTER_NUMBER;
+ else {
+ slot = PCI_SLOT(devfn);
+ if (slot == BRIDGE_SLOT) {
+ if (where <= 0x3f)
+ *(volatile u16 *) (PCI_HDR_BASE +
+ (where & 0xfc) + (where & 2)) = value;
+ } else {
+ address = mk_conf_addr(bus, devfn, where);
+ if (!address)
+ result = PCIBIOS_DEVICE_NOT_FOUND;
+ else {
+ MCF_PCICAR = address;
+ __asm__ __volatile__("tpf");
+ *(volatile u16 *) (HOST_CFG_BASE
+ + (where & 2)) =
+ cpu_to_le16(value);
+ }
+ }
+ }
+ __asm("tpf");
+ MCF_PCICAR &= ~MCF_PCICAR_E;
+ pci_dummy_function();
+
+ DBG("PCI: write_config_word bus=%d, dev=%d, fn=%d, "
+ "addr=0x%02X, value=0x%04X ret=%02X\n",
+ bus->number, PCI_SLOT(devfn), PCI_FUNC(devfn), where, value, result);
+
+ return result;
+}
+
+/*
+ * static int write_config_dword()
+ *
+ * Write a long word to configuration space of specified device
+ */
+static int write_config_dword(/*struct pci_dev *dev*/
+ struct pci_bus *bus, unsigned int devfn, int where, u32 value)
+{
+ int slot;
+ int address;
+ int result;
+
+ result = PCIBIOS_SUCCESSFUL;
+
+ if (where & 0x3)
+ result = PCIBIOS_BAD_REGISTER_NUMBER;
+ else {
+ slot = PCI_SLOT(devfn);
+ if (slot == BRIDGE_SLOT) {
+ if (where <= 0x3d)
+ *(volatile u32 *) (PCI_HDR_BASE + where) =
+ value;
+ } else {
+ address = mk_conf_addr(bus, devfn, where);
+ if (!address)
+ result = PCIBIOS_DEVICE_NOT_FOUND;
+ else {
+ MCF_PCICAR = address;
+ __asm__ __volatile__("tpf");
+ *(volatile u32 *) (HOST_CFG_BASE) =
+ cpu_to_le32(value);
+ }
+ }
+ }
+ __asm("tpf");
+ MCF_PCICAR &= ~MCF_PCICAR_E;
+ pci_dummy_function();
+
+ DBG("PCI: write_config_dword dev=%d, fn=%d,"
+ "addr=0x%02X, value=0x%08X ret=%02X\n",
+ PCI_SLOT(devfn), PCI_FUNC(devfn), where, value, result);
+
+ return result;
+}
+
+static int config_read(struct pci_bus *bus, unsigned int devfn,
+ int where, int size, u32 *val)
+{
+ switch (size) {
+ case 1:
+ return read_config_byte(bus, devfn, where, (u8 *) val);
+ case 2:
+ return read_config_word(bus, devfn, where, (u16 *) val);
+ default:
+ return read_config_dword(bus, devfn, where, val);
+ }
+}
+
+static int config_write(struct pci_bus *bus, unsigned int devfn,
+ int where, int size, u32 val)
+{
+ switch (size) {
+ case 1:
+ return write_config_byte(bus, devfn, where, (u8) val);
+ case 2:
+ return write_config_word(bus, devfn, where, (u16) val);
+ default:
+ return write_config_dword(bus, devfn, where, val);
+ }
+}
+
+/*
+ * configuration routines entry points
+ */
+static struct pci_ops bus_ops = {
+ .read = config_read,
+ .write = config_write,
+};
+
+/************************************************************************/
+
+/*
+ * u8 pci_inb()
+ *
+ * Read a byte at specified address from I/O space
+ */
+unsigned char pci_inb(long addr)
+{
+ char value;
+
+ value = *(volatile unsigned char *)(HOST_IO_BASE |
+ (addr & PCI_IO_MASK));
+ DBG("PCI: inb addr=0x%08X, value=0x%02X\n", addr, value);
+
+ return (unsigned char) value;
+}
+
+
+/*
+ * u16 pci_inw()
+ *
+ * Read a word at specified address from I/O space
+ */
+unsigned short pci_inw(long addr)
+{
+ short value;
+ volatile unsigned short *ptr;
+
+ ptr = (volatile unsigned short *) (HOST_IO_BASE | (addr & PCI_IO_MASK));
+ value = le16_to_cpu(*ptr);
+
+ DBG("PCI: inw addr=0x%08X, value=0x%04X\n", addr, value);
+ return (unsigned short) value;
+}
+
+/*
+ * u16 pci_raw_inw()
+ *
+ * Read a raw word at specified address from I/O space
+ */
+unsigned short pci_raw_inw(long addr)
+{
+ short value;
+ volatile unsigned short *ptr;
+
+ ptr = (volatile unsigned short *) (HOST_IO_BASE | (addr & PCI_IO_MASK));
+ value = *ptr;
+
+ DBG("PCI: raw_inw addr=0x%08X, value=0x%04X\n", addr, value);
+ return (unsigned short) value;
+}
+
+/*
+ * u32 pci_inl()
+ *
+ * Read a dword at specified address from I/O space
+ */
+unsigned long pci_inl(long addr)
+{
+ long value;
+ volatile unsigned long *ptr;
+
+ ptr = (volatile unsigned long *) (HOST_IO_BASE | (addr & PCI_IO_MASK));
+ value = le32_to_cpu(*ptr);
+
+ DBG("PCI: inl addr=0x%08X, value=0x%08X\n", addr, value);
+ return (unsigned long) value;
+}
+
+/*
+ * u32 pci_raw_inl()
+ *
+ * Read a raw dword at specified address from I/O space
+ */
+unsigned long pci_raw_inl(long addr)
+{
+ long value;
+ volatile unsigned long *ptr;
+
+ ptr = (volatile unsigned long *) (HOST_IO_BASE | (addr & PCI_IO_MASK));
+ value = *ptr;
+
+ DBG("PCI: raw_inl addr=0x%08X, value=0x%08X\n", addr, value);
+ return (unsigned long) value;
+}
+
+/*
+ * void pci_outb()
+ *
+ * Write a byte value at specified address to I/O space
+ */
+void pci_outb(unsigned char value, long addr)
+{
+
+ *(volatile unsigned char *)(HOST_IO_BASE | (addr & PCI_IO_MASK))
+ = value;
+ DBG("PCI: outb addr=0x%08X, value=0x%02X\n", addr, value);
+}
+
+
+/*
+ * void pci_outw()
+ *
+ * Write a word value at specified address to I/O space
+ */
+void pci_outw(volatile unsigned short value, volatile long addr)
+{
+ volatile unsigned short *ptr;
+
+ ptr = (volatile unsigned short *) (HOST_IO_BASE | (addr & PCI_IO_MASK));
+ *ptr = cpu_to_le16(value);
+ DBG("PCI: outw addr=0x%08X, value=0x%04X\n", addr, value);
+}
+
+/*
+ * void pci_raw_outw()
+ *
+ * Write a raw word value at specified address to I/O space
+ */
+void pci_raw_outw(volatile unsigned short value, volatile long addr)
+{
+ volatile unsigned short *ptr;
+
+ ptr = (volatile unsigned short *) (HOST_IO_BASE | (addr & PCI_IO_MASK));
+ *ptr = value;
+ DBG("PCI: raw_outw addr=0x%08X, value=0x%04X\n", addr, value);
+}
+
+/*
+ * void pci_outl()
+ *
+ * Write a long word value at specified address to I/O space
+ */
+void pci_outl(volatile unsigned long value, volatile long addr)
+{
+ volatile unsigned long *ptr;
+
+ ptr = (volatile unsigned long *)(HOST_IO_BASE | (addr & PCI_IO_MASK));
+ *ptr = cpu_to_le32(value);
+ DBG("PCI: outl addr=0x%08X, value=0x%08X\n", addr, value);
+}
+
+/*
+ * void pci_raw_outl()
+ *
+ * Write a raw long word value at specified address to I/O space
+ */
+void pci_raw_outl(volatile unsigned long value, volatile long addr)
+{
+ volatile unsigned long *ptr;
+
+ ptr = (volatile unsigned long *)(HOST_IO_BASE | (addr & PCI_IO_MASK));
+ *ptr = value;
+ DBG("PCI: raw_outl addr=0x%08X, value=0x%08X\n", addr, value);
+}
+
+/*
+ * void pci_insb()
+ *
+ * Read several byte values from specified I/O port
+ */
+void pci_insb(volatile unsigned char *addr, unsigned char *buf, int len)
+{
+ for (; len--; buf++)
+ *buf = pci_inb((unsigned long)addr);
+ DBG("PCI: pci_insb addr=0x%08X, buf=%p, len=%d\n", addr, buf, len);
+}
+
+
+/*
+ * void pci_insw()
+ *
+ * Read several word values from specified I/O port
+ */
+void pci_insw(volatile unsigned short *addr, unsigned short *buf, int len)
+{
+ for (; len--; buf++)
+ *buf = pci_inw((unsigned long)addr);
+ DBG("PCI: pci_insw addr=0x%08X, buf=%p, len=%d\n", addr, buf, len);
+}
+
+/*
+ * void pci_insl()
+ *
+ * Read several dword values from specified I/O port
+ */
+void pci_insl(volatile unsigned long *addr, unsigned long *buf, int len)
+{
+ for (; len--; buf++)
+ *buf = pci_inl((unsigned long)addr);
+ DBG("PCI: pci_insl addr=0x%08X, buf=%p, len=%d\n", addr, buf, len);
+}
+
+/*
+ * void pci_outsb()
+ *
+ * Write several byte values to specified I/O port
+ */
+void pci_outsb(volatile unsigned char *addr, const unsigned char *buf, int len)
+{
+ for (; len--; buf++)
+ pci_outb((unsigned long)addr, *buf);
+ DBG("PCI: pci_outsb addr=0x%08X, buf=%p, len=%d\n", addr, buf, len);
+}
+
+/*
+ * void pci_outsw()
+ *
+ * Write several word values to specified I/O port
+ */
+void pci_outsw(volatile unsigned short *addr,
+ const unsigned short *buf, int len)
+{
+ for (; len--; buf++)
+ pci_outw((unsigned long)addr, *buf);
+ DBG("PCI: pci_outsw addr=0x%08X, buf=%p, len=%d\n", addr, buf, len);
+}
+
+/*
+ * void pci_outsl()
+ *
+ * Write several dword values to specified I/O port
+ */
+void pci_outsl(volatile unsigned long *addr, const unsigned long *buf, int len)
+{
+ for (; len--; buf++)
+ pci_outl((unsigned long)addr, *buf);
+ DBG("PCI: pci_outsl addr=0x%08X, buf=%p, len=%d\n", addr, buf, len);
+}
+
+/*
+ * void pci_xlb_handler()
+ *
+ * PCI XLB interrupt handler
+ */
+irqreturn_t xlb_interrupt(int irq, void *dev)
+{
+ volatile int xlb_error = MCF_PCIISR;
+
+ /* Acknowlege interrupt */
+ MCF_PCIISR = xlb_error;
+
+ /* Dump interrupt reason */
+ if (xlb_error & MCF_PCIISR_RE)
+ DBG("PCI: Retry Error Received\n");
+
+ if (xlb_error & MCF_PCIISR_IA)
+ DBG("PCI: Initiator Abort Received\n");
+
+ if (xlb_error & MCF_PCIISR_TA)
+ DBG("PCI: Target Abort Received\n");
+
+ return IRQ_HANDLED;
+}
+
+
+/*
+ * void pci_arbiter_handler()
+ *
+ * PCI arbiter interrupt handler
+ */
+irqreturn_t arb_interrupt(int irq, void *dev)
+{
+ volatile unsigned long arb_error = MCF_PCIARB_PASR;
+
+ /* Acknowlege interrupt */
+ printk(KERN_ERR "%s\n", __func__);
+ MCF_PCIARB_PASR = arb_error;
+
+ if (arb_error & MCF_PCIARB_PASR_ITLMBK) {
+ DBG("PCI: coldfire master time-out\n");
+
+ /* Set infinite number of retries */
+ MCF_PCIICR &= ~0xFF;
+ }
+
+ if (arb_error & MCF_PCIARB_PASR_EXTMBK(0x1F)) {
+ arb_error >>= 17;
+ DBG("PCI: external master time-out (mask = 0x%X)\n", arb_error);
+
+ /* raise arbitration priority level */
+ MCF_PCIARB_PACR = MCF_PCIARB_PACR_EXTMPRI(arb_error);
+ }
+
+ return IRQ_HANDLED;
+}
+
+
+/*
+ * void pci_eint_handler()
+ *
+ * Eport interrupt handler
+ */
+irqreturn_t eint_handler(int irq, void *dev)
+{
+ /* Just acknowlege interrupt and exit */
+ MCF_EPFR = 0x1 << (irq - 64);
+ return IRQ_HANDLED;
+}
+
+resource_size_t
+pcibios_align_resource(void *data, const struct resource *res,
+ resource_size_t size, resource_size_t align)
+{
+ struct pci_dev *dev = data;
+ resource_size_t start = res->start;
+
+ if (res->flags & IORESOURCE_IO) {
+ if (size > 0x100)
+ printk(KERN_ERR "PCI: I/O Region %s/%d too large"
+ " (%ld bytes)\n", pci_name(dev),
+ dev->resource - res, (long int)size);
+
+ if (start & 0x3ff)
+ start = (start + 0x3ff) & ~0x3ff;
+ }
+
+ return start;
+}
+EXPORT_SYMBOL(pcibios_align_resource);
+
+/*
+ * void __init coldfire_fixup(int pci_modify)
+ *
+ * Assign IRQ numbers as used by Linux to the interrupt pins
+ * of the PCI cards.
+ */
+static void __init coldfire_fixup(int pci_modify)
+{
+ struct pci_dev *dev;
+ unsigned char slot, pin;
+
+ DBG("%s\n", __func__);
+#ifdef NL_ORIGINAL
+ pci_for_each_dev(dev) {
+#else
+ dev = NULL;
+ while ((dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL) {
+#endif
+ if (dev->class >> 16 != PCI_BASE_CLASS_BRIDGE) {
+ slot = PCI_SLOT(dev->devfn);
+ dev->irq = 64 + board_info[slot].irq;
+
+ /* Check if device needs interrupt */
+#ifdef NL_ORIGINAL
+ pcibios_read_config_byte(
+ dev->bus->number, dev->devfn,
+ PCI_INTERRUPT_PIN, &pin);
+
+ if (pin) {
+ pcibios_write_config_byte(
+ dev->bus->number, dev->devfn,
+ PCI_INTERRUPT_LINE, dev->irq);
+ }
+#else
+ pci_read_config_byte(dev,
+ PCI_INTERRUPT_PIN, &pin);
+
+ if (pin) {
+ pci_write_config_byte(dev,
+ PCI_INTERRUPT_LINE, dev->irq);
+ }
+#endif
+ }
+ }
+}
+
+static void __init configure_device(struct pci_dev *dev)
+{
+ /* TODO: This should depend from disable_pci_burst setting */
+ DBG("%s\n", __func__);
+#ifdef NL_ORIGINAL
+ pcibios_write_config_byte(bus, devfn,
+ PCI_CACHE_LINE_SIZE, PCI_CACHE_LINE);
+#else
+ pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE, PCI_CACHE_LINE);
+
+ MCF_PCICR1 = MCF_PCICR1_LATTIMER(0xF8) |
+ MCF_PCICR1_CACHELINESIZE(PCI_CACHE_LINE);
+
+#endif
+}
+
+
+struct pci_bus_info *__init init_coldfire_pci(void)
+{
+ struct pci_bus_info *bus;
+ int i;
+ unsigned long pci_mem_va;
+ static char irq_name[N_IRQS][15];
+
+ MCF_SPCR |= 0x02; /*Enable the PCI clock*/
+
+ /* Get controller revision */
+ revision = MCF_PCICCRIR;
+ printk(KERN_INFO "ColdFire PCI Host Bridge "
+ "(Rev. %d) detected:"
+ "MEMBase %x,MEMLen %x,IOBase %x,IOLen %x\n",
+ revision, HOST_MEM_BASE,
+ PCI_MEM_SIZE - 1, 0, PCI_IO_SIZE - 1);
+
+ bus = (struct pci_bus_info *)kmalloc(sizeof(struct pci_bus_info),
+ GFP_KERNEL);
+ if (!bus) {
+ printk(KERN_ERR "can not alloc mem for pci bus!\n");
+ return NULL;
+ }
+
+ /* Setup bus info structure. */
+ memset(bus, 0, sizeof(struct pci_bus_info));
+
+ /* Request intiator memory resource */
+ bus->mem_space.start = PCI_MEM_BASE;/*HOST_MEM_BASE;*/
+ bus->mem_space.end = bus->mem_space.start + PCI_MEM_SIZE - 1;
+ bus->mem_space.name = "PCI Bus #0";
+ if (request_resource(&iomem_resource,
+ &(bus->mem_space)) != 0) {
+ printk(KERN_ERR "Failed to request bridge iomem resource\n");
+ return NULL;
+ }
+
+ /* Request intiator memory resource */
+ /*bus->io_space.start = 0;*/
+ bus->io_space.start = HOST_IO_BASE;
+ bus->io_space.end = bus->io_space.start + PCI_IO_SIZE - 1;
+ bus->io_space.name = "PCI Bus #0";
+ if (request_resource(&ioport_resource,
+ &(bus->io_space)) != 0) {
+ printk(KERN_ERR "Failed to request bridge "
+ "ioport resource\n");
+ return NULL;
+ }
+
+ /* Must Reset!!! If bootloader has PCI enabled, it will cause
+ * problem in linux when it tries to configure/find resources
+ * for the pci devices. Both registers need to be reset.
+ */
+ /*MCF_PCIGSCR |= 0x1;*/
+ MCF_PCIGSCR = 0x1;
+ MCF_PCITCR = 0x00000000;
+
+ /* Set up the arbiter */
+ MCF_PCIARB_PACR = 0; /*MCF_PCIARB_PACR_PKMD*/
+
+ /* GNT and REQ */
+ MCF_PAR_PCIBG = 0x3FF;
+ MCF_PAR_PCIBR = 0x3FF;
+
+ /* Enable bus mastering, memory access and MWI */
+ MCF_PCISCR = (MCF_PCISCR_B | MCF_PCISCR_M);
+
+ /* Setup burst parameters */
+ /*The offset 0x0e normally was header_type, set it to 0 and fix later*/
+ MCF_PCICR1 = MCF_PCICR1_LATTIMER(0x00) |
+ MCF_PCICR1_CACHELINESIZE(PCI_CACHE_LINE);
+
+ MCF_PCICR2 = 0;
+ /*MCF_PCICR2_MINGNT(PCI_MINGNT) |
+ MCF_PCICR2_MAXLAT(PCI_MAXLAT);
+ */
+ /* Turn on error signaling */
+ MCF_PCIICR = MCF_PCIICR_TAE | MCF_PCIICR_IAE | PCI_RETRIES;
+ MCF_PCIGSCR |= MCF_PCIGSCR_SEE;
+ /*
+ * Configure Initiator Windows
+ * Window 0: 128M PCI Memory @ HOST_MEM_BASE, 1:1 mapping
+ * Window 1: 64K I/O Memory @ HOST_IO_BASE, 1:0 mapping
+ */
+ MCF_PCIIW0BTAR = WxBAR(HOST_MEM_BASE, PCI_MEM_BASE, PCI_MEM_SIZE);
+ MCF_PCIIW1BTAR = WxBAR(HOST_IO_BASE, PCI_IO_BASE_ADDR, PCI_IO_SIZE);
+
+ MCF_PCIIWCR = MCF_PCIIWCR_WINCTRL1_IO |
+ MCF_PCIIWCR_WINCTRL0_MEMREAD;
+
+ /* Target PCI DMA Windows */
+ MCF_PCIBAR1 = PCI_DMA_BASE;
+ MCF_PCITBATR1 = HOST_DMA_BASE | MCF_PCITBATR1_EN;
+
+ /* Enable internal PCI controller interrupts */
+ MCF_ICR(ISC_PCI_XLB) = ILP_PCI_XLB;
+ /*request_irq(64+ISC_PCI_XLB, xlb_interrupt,
+ SA_INTERRUPT, "PCI XL Bus", (void*)-1);
+ enable_irq (64+ISC_PCI_XLB);
+ */
+ if (request_irq(64+ISC_PCI_XLB, xlb_interrupt,
+ IRQF_DISABLED, "PCI XL Bus", (void *)-1)) {
+ printk(KERN_ERR "Cannot allocate "
+ "ISC_PCI_XLB IRQ\n");
+ return (struct pci_bus_info *)-EBUSY;
+ }
+
+ MCF_ICR(ISC_PCI_ARB) = ILP_PCI_ARB;
+ /*request_irq(64+ISC_PCI_ARB, arb_interrupt,
+ SA_INTERRUPT, "PCI Arbiter", (void*)-1);
+ enable_irq (64+ISC_PCI_ARB);
+ */
+ if (request_irq(64 + ISC_PCI_ARB, arb_interrupt,
+ IRQF_DISABLED, "PCI Arbiter", (void *)-1)) {
+ printk(KERN_ERR "Cannot allocate "
+ "ISC_PCI_ARB IRQ\n");
+ return (struct pci_bus_info *)-EBUSY;
+ }
+
+ /* Set slots interrupt setting */
+ for (i = 0; i < N_IRQS; i++) {
+ /* Set trailing edge for PCI interrupts */
+ MCF_EPPAR &= ~MCF_EPPAR_EPPA(irq_lines[i], 0x3);
+ if (irq_lines[i] == 5)
+ MCF_EPPAR |= MCF_EPPAR_EPPA(irq_lines[i],
+ MCF_EPPAR_EPPAx_FALLING);
+ else
+ MCF_EPPAR |= MCF_EPPAR_EPPA(irq_lines[i],
+ 0/*MCF_EPPAR_EPPAx_FALLING*/);
+ /* Turn on irq line in eport */
+ MCF_EPIER |= MCF_EPIER_EPIE(irq_lines[i]);
+
+ /* Enable irq in gpio */
+ if (irq_lines[i] == 5)
+ MCF_PAR_FECI2CIRQ |= 1;
+
+ if (irq_lines[i] == 6)
+ MCF_PAR_FECI2CIRQ |= 2;
+
+ /* Register external interrupt handlers */
+ sprintf(irq_name[i], "PCI IRQ%d", irq_lines[i]);
+ /*request_irq(64 + irq_lines[i], eint_handler,
+ SA_SHIRQ, irq_name[i], (void*)-1);
+ enable_irq(64 + irq_lines[i]);*/
+ if (request_irq(64 + irq_lines[i], eint_handler,
+ IRQF_SHARED, irq_name[i], (void *)-1)) {
+ printk(KERN_ERR "Cannot allocate "
+ "irq_lines[%d] IRQ\n",
+ irq_lines[i]);
+ return (struct pci_bus_info *)-EBUSY;
+ }
+ }
+
+ /* Clear PCI Reset and wait for devices to reset */
+ MCF_PCIGSCR &= ~MCF_PCIGSCR_PR;
+ schedule_timeout((5 * HZ));
+ /* Remap initiator windows (should be 1:1 to the physical memory) */
+ pci_mem_va = (int) ioremap_nocache(HOST_MEM_BASE,
+ PCI_MEM_SIZE + PCI_IO_SIZE);
+ udelay(1000); /* let every thing effect */
+#if 1
+ printk(KERN_INFO "%s: MEMBase_phy %x, Virt %x, len %x\n",
+ __func__, HOST_MEM_BASE, pci_mem_va,
+ PCI_MEM_SIZE + PCI_IO_SIZE);
+#endif
+ BUG_ON(pci_mem_va != HOST_MEM_BASE);
+
+ /* Setup bios32 and pci bus driver callbacks */
+ bus->m68k_pci_ops = &bus_ops;
+ bus->fixup = coldfire_fixup;
+ bus->conf_device = configure_device;
+
+ return bus;
+}
--- /dev/null
+++ b/arch/m68k/coldfire/m547x/pci_dummy.S
@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2010-2011 Freescale Semiconductor, Inc. All Rights Reserved.
+ * Author: Jason Jin <Jason.jin@freescale.com>
+ *
+ * This routine is the dummy function for PCI errata
+ *
+ * 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
+ */
+
+.global _pci_dummy_function
+.global pci_dummy_function
+.text
+
+pci_dummy_function:
+_pci_dummy_function:
+
+/* force function start to 16-byte boundary.Can be done in linker file also */
+.align 16
+clr.l %d0
+move.l %d0, 0xF0000F0C
+/* Must use direct addressing. write to EPORT module
+* xlbus -> slavebus -> eport, writing '0' to register has no
+* effect
+*/
+
+rts
+tpf.l #0x0
+tpf.l #0x0
+tpf.l #0x0
+tpf.l #0x0
+tpf.l #0x0
+.end
--- /dev/null
+++ b/arch/m68k/include/asm/5445x_pci.h
@@ -0,0 +1,111 @@
+/*
+ * asm-m68k/pci.h - m68k specific PCI declarations.
+ *
+ * Copyright (C) 2007, 2009-2011 Freescale Semiconductor, Inc.
+ * All Rights Reserved.
+ * Kurt Mahan <kmahan@freescale.com>
+ */
+#ifndef _ASM_M68K_5445X_PCI_H
+#define _ASM_M68K_5445x_PCI_H
+
+#ifndef CONFIG_PCI
+/*
+ * The PCI address space does equal the physical memory
+ * address space. The networking and block device layers use
+ * this boolean for bounce buffer decisions.
+ */
+#define PCI_DMA_BUS_IS_PHYS (1)
+#else
+#include <asm-generic/pci-dma-compat.h>
+
+#define PCI_DMA_BASE 0 /* PCI-DMA window base */
+#define NL_ORIGINAL
+/*
+ * The PCI address space does equal the physical memory
+ * address space. The networking and block device layers use
+ * this boolean for bounce buffer decisions.
+ */
+#define PCI_DMA_BUS_IS_PHYS (1)
+
+#define PCIBIOS_MIN_IO 0x00004000
+#define PCIBIOS_MIN_MEM 0x02000000
+
+#define pcibios_assign_all_busses() 0
+#define pcibios_scan_all_fns(a, b) 0
+
+struct pci_raw_ops {
+ int (*read)(unsigned int domain, unsigned int bus, unsigned int devfn,
+ int reg, int len, u32 *val);
+ int (*write)(unsigned int domain, unsigned int bus, unsigned int devfn,
+ int reg, int len, u32 val);
+};
+
+extern struct pci_raw_ops *raw_pci_ops;
+
+static inline void
+pcibios_set_master(struct pci_dev *dev)
+{
+ /* no special bus mastering setup handling */
+}
+
+static inline void
+pcibios_penalize_isa_irq(int irq, int active)
+{
+ /* no dynamic PCI IRQ allocation */
+}
+
+#if 0
+static inline void
+pcibios_add_platform_entries(struct pci_dev *dev)
+{
+ /* no special handling */
+}
+#endif
+
+static inline void
+pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region,
+ struct resource *res)
+{
+ region->start = res->start;
+ region->end = res->end;
+}
+
+static inline void
+pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res,
+ struct pci_bus_region *region)
+{
+ res->start = region->start;
+ res->end = region->end;
+}
+
+static inline struct resource *
+pcibios_select_root(struct pci_dev *pdev, struct resource *res)
+{
+ struct resource *root = NULL;
+
+ if (res->flags & IORESOURCE_IO)
+ root = &ioport_resource;
+ if (res->flags & IORESOURCE_MEM)
+ root = &iomem_resource;
+
+ return root;
+}
+
+#ifndef CONFIG_M54455_PCI_initcall
+extern int pci_init(void);
+extern int pcibios_init(void);
+#endif
+
+extern void set_fpga(u32 *addr, u32 val);
+
+#ifdef CONFIG_M54455
+extern int init_mcf5445x_pci(void);
+extern void mcf5445x_conf_device(struct pci_dev *dev);
+extern void mcf5445x_pci_dumpregs(void);
+
+extern struct resource pci_ioport_resource;
+extern struct resource pci_iomem_resource;
+#endif
+
+#endif /* CONFIG_PCI */
+#endif /* _ASM_M68K_5445X_PCI_H */
--- /dev/null
+++ b/arch/m68k/include/asm/548x_pci.h
@@ -0,0 +1,99 @@
+/*
+ * Copyright (C) 2009-2011 Freescale Semiconductor, Inc. All Rights Reserved.
+ * Written by Wout Klaren.
+ */
+
+#ifndef _ASM_M68K_548X_PCI_H
+#define _ASM_M68K_548X_PCI_H
+
+#include <linux/mm.h>
+#include <asm/scatterlist.h>
+
+#include <asm-generic/pci.h>
+
+struct pci_ops;
+
+/*
+ * Structure with hardware dependent information and functions of the
+ * PCI bus.
+ */
+
+struct pci_bus_info {
+ /*
+ * Resources of the PCI bus.
+ */
+
+ struct resource mem_space;
+ struct resource io_space;
+
+ /*
+ * System dependent functions.
+ */
+
+ struct pci_ops *m68k_pci_ops;
+
+ void (*fixup)(int pci_modify);
+ void (*conf_device)(struct pci_dev *dev);
+};
+
+#define pcibios_assign_all_busses() 0
+#define pcibios_scan_all_fns(a, b) 0
+
+static inline void pcibios_set_master(struct pci_dev *dev)
+{
+ /* No special bus mastering setup handling */
+}
+
+static inline void pcibios_penalize_isa_irq(int irq)
+{
+ /* We don't do dynamic PCI IRQ allocation */
+}
+
+#ifndef CONFIG_COLDFIRE
+/* The PCI address space does equal the physical memory
+ * address space. The networking and block device layers use
+ * this boolean for bounce buffer decisions.
+ */
+#define PCI_DMA_BUS_IS_PHYS (1)
+
+#define PCIBIOS_MIN_IO 0x00004000
+#define PCIBIOS_MIN_MEM 0x04000000
+
+#else /* !CONFIG_COLDFIRE */
+#include <asm-generic/pci-dma-compat.h>
+#define PCI_DMA_BASE /*0x40000000*/0
+/* PCI-DMA window base */
+
+extern struct pci_bus_info *__init init_coldfire_pci(void);
+extern void *pci_alloc_son(struct pci_dev *, size_t,
+ dma_addr_t *, int);
+/*
+ * The PCI address space equal the virtual memory
+ * address space on m547X/m548X.
+ */
+#define PCI_DMA_BUS_IS_PHYS (1)
+
+#define PCIBIOS_MIN_IO 0x00000100
+#define PCIBIOS_MIN_MEM 0x02000000
+
+struct scatterlist;
+
+
+/* This is always fine. */
+#define pci_dac_dma_supported(pci_dev, mask) (1)
+
+
+/* These macros should be used after a pci_map_sg call has been done
+ * to get bus addresses of each of the SG entries and their lengths.
+ * You should only work with the number of sg entries pci_map_sg
+ * returns.
+ */
+#define sg_dma_address(sg) ((sg)->dma_address)
+#define sg_dma_len(sg) ((sg)->length)
+
+extern void pci_dummy_function(void);
+/*Declarations of hardware specific initialisation functions*/
+extern struct pci_bus_info *init_hades_pci(void);
+
+#endif /* !CONFIG_COLDFIRE*/
+#endif /* _ASM_M68K_548X_PCI_H */
--- a/arch/m68k/include/asm/pci.h
+++ b/arch/m68k/include/asm/pci.h
@@ -1,7 +1,13 @@
#ifndef _ASM_M68K_PCI_H
#define _ASM_M68K_PCI_H
+#if defined(CONFIG_M5445X)
+#include "5445x_pci.h"
+#elif defined(CONFIG_M547X_8X)
+#include "548x_pci.h"
+#else
#include <asm-generic/pci-dma-compat.h>
+#endif
/* The PCI address space does equal the physical memory
* address space. The networking and block device layers use
--- /dev/null
+++ b/arch/m68k/kernel/bios32_mcf548x.c
@@ -0,0 +1,632 @@
+/*
+ * bios32.c - PCI BIOS functions for m68k systems.
+ *
+ * Written by Wout Klaren.
+ *
+ * Copyright (C) 2008-2011 Freescale Semiconductor, Inc. All Rights Reserved.
+ * Shrek Wu B16972@freescale.com
+ *
+ * Based on the DEC Alpha bios32.c by Dave Rusling and David Mosberger.
+ */
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/device.h>
+#include <linux/delay.h>
+
+# define DBG_DEVS(args)
+
+#ifdef CONFIG_PCI
+
+/*
+ * PCI support for Linux/m68k. Currently only the Hades is supported.
+ *
+ * The support for PCI bridges in the DEC Alpha version has
+ * been removed in this version.
+ */
+
+#include <linux/pci.h>
+#include <linux/slab.h>
+#include <linux/mm.h>
+
+#include <asm/io.h>
+#include <asm/pci.h>
+#include <asm/uaccess.h>
+
+#define KB 1024
+#define MB (1024*KB)
+#define GB (1024*MB)
+
+#define MAJOR_REV 0
+#define MINOR_REV 5
+
+/*
+ * Align VAL to ALIGN, which must be a power of two.
+ */
+
+#define MAX(val1, val2) (((val1) > (val2)) ? val1 : val2)
+
+/*
+ * Offsets relative to the I/O and memory base addresses from where resources
+ * are allocated.
+ */
+
+#ifdef CONFIG_COLDFIRE
+#define IO_ALLOC_OFFSET 0x00000100
+#define MEM_ALLOC_OFFSET 0x00000000
+#else /* CONFIG_COLDFIRE */
+#define IO_ALLOC_OFFSET 0x00004000
+#define MEM_ALLOC_OFFSET 0x04000000
+#endif /* CONFIG_COLDFIRE */
+
+/*
+ * Bus info structure of the PCI bus. A pointer to this structure is
+ * put in the sysdata member of the pci_bus structure.
+ */
+
+static struct pci_bus_info *bus_info;
+
+static int pci_modify = 1;
+/* If set, layout the PCI bus ourself. */
+static int skip_vga;
+/* If set do not modify base addresses of vga cards.*/
+static int disable_pci_burst;
+/* If set do not allow PCI bursts. */
+
+static volatile unsigned int io_base;
+static volatile unsigned int mem_base;
+
+/*
+ * static void disable_dev(struct pci_dev *dev)
+ *
+ * Disable PCI device DEV so that it does not respond to I/O or memory
+ * accesses.
+ *
+ * Parameters:
+ *
+ * dev - device to disable.
+ */
+
+static void __init disable_dev(struct pci_dev *dev)
+{
+ unsigned short cmd;
+
+ if (((dev->class >> 8 == PCI_CLASS_NOT_DEFINED_VGA) ||
+ (dev->class >> 8 == PCI_CLASS_DISPLAY_VGA) ||
+ (dev->class >> 8 == PCI_CLASS_DISPLAY_XGA)) && skip_vga)
+ return;
+
+ pci_read_config_word(dev, PCI_COMMAND, &cmd);
+
+ cmd &= (~PCI_COMMAND_IO & ~PCI_COMMAND_MEMORY & ~PCI_COMMAND_MASTER);
+ pci_write_config_word(dev, PCI_COMMAND, cmd);
+}
+
+/* Stolen from pcibios_enable_resources/i386 */
+int pcibios_enable_device(struct pci_dev *dev, int mask)
+{
+ u16 cmd, old_cmd;
+ int idx;
+ struct resource *r;
+
+ pci_read_config_word(dev, PCI_COMMAND, &cmd);
+ old_cmd = cmd;
+ for (idx = 0; idx < 6; idx++) {
+ /* Only set up the requested stuff */
+ if (!(mask & (1<<idx)))
+ continue;
+
+ r = &dev->resource[idx];
+ if (!r->start && r->end) {
+ printk(KERN_ERR "PCI: Device %s not"
+ " available because"
+ " of resource collisions\n",
+ dev_name(&(dev->dev)));
+ return -EINVAL;
+ }
+ if (r->flags & IORESOURCE_IO)
+ cmd |= PCI_COMMAND_IO;
+ if (r->flags & IORESOURCE_MEM)
+ cmd |= PCI_COMMAND_MEMORY;
+ }
+ if (dev->resource[PCI_ROM_RESOURCE].start)
+ cmd |= PCI_COMMAND_MEMORY;
+ if (cmd != old_cmd) {
+ printk(KERN_ERR "PCI: Enabling device "
+ "%s (%04x -> %04x)\n",
+ dev_name(&(dev->dev)), old_cmd, cmd);
+ pci_write_config_word(dev, PCI_COMMAND, cmd);
+ }
+ return 0;
+}
+
+/*
+ * static void layout_dev(struct pci_dev *dev)
+ *
+ * Layout memory and I/O for a device.
+ *
+ * Parameters:
+ *
+ * device - device to layout memory and I/O for.
+ */
+
+static void __init layout_dev(struct pci_dev *dev)
+{
+ unsigned short cmd;
+ unsigned int base, mask, size, reg;
+ unsigned int alignto;
+ int i;
+
+ /*
+ * Skip video cards if requested.
+ */
+ if (((dev->class >> 8 == PCI_CLASS_NOT_DEFINED_VGA) ||
+ (dev->class >> 8 == PCI_CLASS_DISPLAY_VGA) ||
+ (dev->class >> 8 == PCI_CLASS_DISPLAY_XGA)) && skip_vga) {
+ printk(KERN_ERR "%s: VGA\n", __func__);
+ return;
+ }
+
+ pci_read_config_word(dev, PCI_COMMAND, &cmd);
+
+ for (reg = PCI_BASE_ADDRESS_0, i = 0;
+ reg <= PCI_BASE_ADDRESS_5; reg += 4, i++) {
+ /*
+ * Figure out how much space and of what type this
+ * device wants.
+ */
+
+ pci_write_config_dword(dev, reg, 0xffffffff);
+ pci_read_config_dword(dev, reg, &base);
+ if (!base) {
+ /* this base-address register is unused */
+ dev->resource[i].start = 0;
+ dev->resource[i].end = 0;
+ dev->resource[i].flags = 0;
+ continue;
+ }
+
+ /*
+ * We've read the base address register back after
+ * writing all ones and so now we must decode it.
+ */
+ if (base & PCI_BASE_ADDRESS_SPACE_IO) {
+ /*
+ * I/O space base address register.
+ */
+
+ cmd |= PCI_COMMAND_IO;
+
+ base &= PCI_BASE_ADDRESS_IO_MASK;
+ mask = (~base << 1) | 0x1;
+ size = (mask & base) & 0xffffffff;
+
+ /*
+ * Align to multiple of size of minimum base.
+ */
+
+#ifdef CONFIG_COLDFIRE
+ alignto = MAX(PAGE_SIZE, size) ;
+#else /* !CONFIG_COLDFIRE */
+ alignto = MAX(0x040, size) ;
+#endif /* CONFIG_COLDFIRE */
+ base = ALIGN(io_base, alignto);
+ io_base = base + size;
+ pci_write_config_dword(dev, reg,
+ base | PCI_BASE_ADDRESS_SPACE_IO);
+ dev->resource[i].start = base;
+ dev->resource[i].end =
+ dev->resource[i].start + size - 1;
+ dev->resource[i].flags =
+ IORESOURCE_IO | PCI_BASE_ADDRESS_SPACE_IO;
+
+ DBG_DEVS(("layout_dev: IO address: %x\n", base));
+ } else {
+ unsigned int type;
+
+ /*
+ * Memory space base address register.
+ */
+ cmd |= PCI_COMMAND_MEMORY;
+
+ type = base & PCI_BASE_ADDRESS_MEM_TYPE_MASK;
+ base &= PCI_BASE_ADDRESS_MEM_MASK;
+ mask = (~base << 1) | 0x1;
+ size = (mask & base) & 0xffffffff;
+ switch (type) {
+ case PCI_BASE_ADDRESS_MEM_TYPE_32:
+ case PCI_BASE_ADDRESS_MEM_TYPE_64:
+ break;
+
+ case PCI_BASE_ADDRESS_MEM_TYPE_1M:
+ printk(KERN_INFO "bios32 WARNING: slot %d,"
+ " function %d "
+ "requests memory below 1MB---don't "
+ "know how to do that.\n",
+ PCI_SLOT(dev->devfn),
+ PCI_FUNC(dev->devfn));
+ continue;
+ }
+ DBG_DEVS(("%s MEM: base %x,type %x,mask %x,size %x\n",
+ __func__, base, type, mask, size));
+ /*
+ * Align to multiple of size of minimum base.
+ */
+
+ alignto = max_t(unsigned int, 0x1000, size);
+ base = ALIGN(mem_base, alignto);
+ mem_base = base + size;
+ pci_write_config_dword(dev, reg, base);
+ dev->resource[i].start = base;
+ dev->resource[i].end =
+ dev->resource[i].start + size - 1;
+ dev->resource[i].flags = IORESOURCE_MEM;
+
+ DBG_DEVS(("%s MEM :base %x,size %x\n",
+ __func__, base, size));
+ if (type == PCI_BASE_ADDRESS_MEM_TYPE_64) {
+ /*
+ * 64-bit address, set the highest 32 bits
+ * to zero.
+ */
+
+ reg += 4;
+ pci_write_config_dword(dev, reg, 0);
+
+ i++;
+ dev->resource[i].start = 0;
+ dev->resource[i].end = 0;
+ dev->resource[i].flags = 0;
+ printk(KERN_ERR "%s:type == 64\n", __func__);
+ }
+ }
+ }
+ /*
+ * Enable device:
+ */
+ if (dev->class >> 8 == PCI_CLASS_NOT_DEFINED ||
+ dev->class >> 8 == PCI_CLASS_NOT_DEFINED_VGA ||
+ dev->class >> 8 == PCI_CLASS_DISPLAY_VGA ||
+ dev->class >> 8 == PCI_CLASS_DISPLAY_XGA) {
+ /*
+ * All of these (may) have I/O scattered all around
+ * and may not use i/o-base address registers at all.
+ * So we just have to always enable I/O to these
+ * devices.
+ */
+ cmd |= PCI_COMMAND_IO;
+ pci_write_config_word(dev, PCI_COMMAND,
+ cmd | PCI_COMMAND_MASTER);
+ }
+
+ pci_write_config_byte(dev, PCI_LATENCY_TIMER,
+ (disable_pci_burst) ? 0 : 32);
+
+ if (bus_info != NULL)
+ bus_info->conf_device(dev);
+ /* Machine dependent configuration. */
+
+ printk(KERN_INFO "layout_dev: bus %d slot 0x%x "
+ "VID 0x%x DID 0x%x class 0x%x\n",
+ dev->bus->number, PCI_SLOT(dev->devfn),
+ dev->vendor, dev->device, dev->class);
+}
+
+/*
+ * static void layout_bus(struct pci_bus *bus)
+ *
+ * Layout memory and I/O for all devices on the given bus.
+ *
+ * Parameters:
+ *
+ * bus - bus.
+ */
+
+static void __init layout_bus(struct pci_bus *bus)
+{
+ unsigned int bio, bmem;
+ struct pci_dev *dev;
+
+ DBG_DEVS(("layout_bus: starting bus %d\n", bus->number));
+
+ if (list_empty(&bus->devices) && list_empty(&bus->children))
+ return;
+
+ /*
+ * Align the current bases on appropriate boundaries (4K for
+ * IO and 1MB for memory).
+ */
+
+ bio = io_base = ALIGN(io_base, 4*KB);
+ bmem = mem_base = ALIGN(mem_base, 1*MB);
+
+ /*
+ * PCI devices might have been setup by a PCI BIOS emulation
+ * running under TOS. In these cases there is a
+ * window during which two devices may have an overlapping
+ * address range. To avoid this causing trouble, we first
+ * turn off the I/O and memory address decoders for all PCI
+ * devices. They'll be re-enabled only once all address
+ * decoders are programmed consistently.
+ */
+
+ DBG_DEVS(("layout_bus: disable_dev for bus %d\n", bus->number));
+
+#ifdef NL_ORIGINAL
+ for (dev = bus->devices; dev; dev = dev->sibling) {
+#else
+ dev = NULL;
+ while ((dev = pci_get_device(
+ PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL) {
+#endif
+ if ((dev->class >> 16 != PCI_BASE_CLASS_BRIDGE) ||
+ (dev->class >> 8 == PCI_CLASS_BRIDGE_PCMCIA))
+ disable_dev(dev);
+ }
+
+ /*
+ * Allocate space to each device:
+ */
+
+ DBG_DEVS(("layout_bus: starting bus %d devices\n", bus->number));
+
+#ifdef NL_ORIGINAL
+ for (dev = bus->devices; dev; dev = dev->sibling) {
+#else
+ dev = NULL;
+ while ((dev = pci_get_device(
+ PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL) {
+#endif
+
+ if ((dev->class >> 16 != PCI_BASE_CLASS_BRIDGE) ||
+ (dev->class >> 8 == PCI_CLASS_BRIDGE_PCMCIA))
+ layout_dev(dev);
+ }
+
+ DBG_DEVS(("layout_bus: bus %d finished\n", bus->number));
+}
+
+/*
+ * static void pcibios_fixup(void)
+ *
+ * Layout memory and I/O of all devices on the PCI bus if 'pci_modify' is
+ * true. This might be necessary because not every m68k machine with a PCI
+ * bus has a PCI BIOS. This function should be called right after
+ * pci_scan_bus() in pcibios_init().
+ */
+
+static void __init pcibios_fixup(void)
+{
+ DBG_DEVS(("%s\n", __func__));
+ if (pci_modify) {
+ /*
+ * Set base addresses for allocation of I/O and memory space.
+ */
+
+ io_base = bus_info->io_space.start + IO_ALLOC_OFFSET;
+ mem_base = bus_info->mem_space.start + MEM_ALLOC_OFFSET;
+
+ /*
+ * Scan the tree, allocating PCI memory and I/O space.
+ */
+
+#ifdef NL_ORIGINAL
+ layout_bus(pci_bus_b(pci_root.next));
+#else
+ layout_bus(pci_bus_b(pci_root_buses.next));
+#endif
+ }
+
+ /*
+ * Fix interrupt assignments, etc.
+ */
+
+ bus_info->fixup(pci_modify);
+}
+
+/*
+ * static void pcibios_claim_resources(struct pci_bus *bus)
+ *
+ * Claim all resources that are assigned to devices on the given bus.
+ *
+ * Parameters:
+ *
+ * bus - bus.
+ */
+
+static void __init pcibios_claim_resources(struct pci_bus *bus)
+{
+ struct pci_dev *dev;
+ int i;
+ DBG_DEVS(("%s\n", __func__));
+#ifdef NL_ORIGINAL
+ while (bus) {
+#else
+ while ((bus = pci_find_next_bus(bus)) != NULL) {
+#endif
+
+#ifdef NL_ORIGINAL
+ for (dev = bus->devices; (dev != NULL);
+ dev = dev->sibling) {
+#else
+ dev = NULL;
+ while ((dev = pci_get_device(
+ PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL) {
+#endif
+ for (i = 0; i < PCI_NUM_RESOURCES; i++) {
+ struct resource *r = &dev->resource[i];
+ struct resource *pr;
+ struct pci_bus_info *bus_info =
+ (struct pci_bus_info *)dev->sysdata;
+
+ if ((r->start == 0) || (r->parent != NULL))
+ continue;
+
+#ifdef CONFIG_COLDFIRE
+ if (dev->class >> 16 == PCI_BASE_CLASS_BRIDGE)
+ continue;
+#endif /* CONFIG_COLDFIRE */
+#if 1
+ if (r->flags & IORESOURCE_IO)
+ pr = &bus_info->io_space;
+ else
+ pr = &bus_info->mem_space;
+#else
+ if (r->flags & IORESOURCE_IO)
+ pr = &ioport_resource;
+ else
+ pr = &iomem_resource;
+#endif
+ if (request_resource(pr, r) < 0) {
+#ifdef NL_ORIGINAL
+ DBG_DEVS(("PCI: Address space"
+ " collision on "
+ "region %d of device %s\n",
+ i, dev->name));
+#else
+ printk(KERN_INFO "PCI: Address space"
+ " collision on region %d of"
+ " device %s\n",
+ i, dev_name(&(dev->dev)));
+#endif
+ }
+ }
+
+#ifdef NL_ORIGINAL
+ }
+ if (bus->children)
+ pcibios_claim_resources(bus->children);
+#else
+ }
+ if (!list_empty(&bus->children))
+ pcibios_claim_resources(pci_bus_b(bus->children.next));
+#endif
+
+#ifdef NL_ORIGINAL
+ bus = bus->next;
+#endif
+ }
+}
+
+/*
+ * int pcibios_assign_resource(struct pci_dev *dev, int i)
+ *
+ * Assign a new address to a PCI resource.
+ *
+ * Parameters:
+ *
+ * dev - device.
+ * i - resource.
+ *
+ * Result: 0 if successful.
+ */
+
+int __init pcibios_assign_resource(struct pci_dev *dev, int i)
+{
+ struct resource *r = &dev->resource[i];
+ struct resource *pr = pci_find_parent_resource(dev, r);
+ unsigned long size = r->end + 1;
+ DBG_DEVS(("%s:IO_ALLOC_OFFSET %x\n", __func__, IO_ALLOC_OFFSET));
+ if (!pr)
+ return -EINVAL;
+
+ if (r->flags & IORESOURCE_IO) {
+ DBG_DEVS(("%s:IORESOURCE_IO:start %x, size %lx\n",
+ __func__, bus_info->io_space.start, size));
+ if (size > 0x100)
+ return -EFBIG;
+
+#ifdef NL_ORIGINAL
+ if (allocate_resource(pr, r, size, bus_info->io_space.start +
+ IO_ALLOC_OFFSET,
+ bus_info->io_space.end,
+ 1024))
+#else
+ if (allocate_resource(pr, r, size, bus_info->io_space.start +
+ IO_ALLOC_OFFSET,
+ bus_info->io_space.end,
+ 1024, NULL, NULL))
+#endif
+ return -EBUSY;
+ } else {
+ DBG_DEVS(("%s:IORESOURCE_MEM:start %x, size %lx\n",
+ __func__, bus_info->mem_space.start, size));
+#ifdef NL_ORIGINAL
+ if (allocate_resource(pr, r, size, bus_info->mem_space.start +
+ MEM_ALLOC_OFFSET,
+ bus_info->mem_space.end, size))
+#else
+ if (allocate_resource(pr, r, size, bus_info->io_space.start +
+ IO_ALLOC_OFFSET, bus_info->io_space.end,
+ 1024, NULL, NULL))
+#endif
+ return -EBUSY;
+ }
+
+ if (i < 6)
+ pci_write_config_dword(dev,
+ PCI_BASE_ADDRESS_0 + 4 * i, r->start);
+
+ return 0;
+}
+
+void pcibios_fixup_bus(struct pci_bus *bus)
+{
+ struct pci_dev *dev;
+ void *sysdata;
+
+ sysdata = (bus->parent) ? bus->parent->sysdata : bus->sysdata;
+
+#ifdef NL_ORIGINAL
+ for (dev = bus->devices; (dev != NULL); dev = dev->sibling)
+#else
+ dev = NULL;
+ while ((dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL)
+#endif
+ dev->sysdata = sysdata;
+}
+
+int __init pcibios_init(void)
+{
+ printk(KERN_INFO "Linux/m68k PCI BIOS32 "
+ "revision %x.%02x\n", MAJOR_REV, MINOR_REV);
+
+ bus_info = NULL;
+#ifdef CONFIG_COLDFIRE
+ bus_info = init_coldfire_pci();
+#endif /* CONFIG_COLDFIRE */
+#ifdef CONFIG_HADES
+ if (MACH_IS_HADES)
+ bus_info = init_hades_pci();
+#endif
+ if (bus_info != NULL) {
+ printk(KERN_ERR "PCI: Probing PCI hardware\n");
+ pci_scan_bus(0, bus_info->m68k_pci_ops, bus_info);
+ pcibios_fixup();
+#ifdef NL_ORIGINAL
+ pcibios_claim_resources(pci_root);
+#else
+ pcibios_claim_resources(pci_bus_b(pci_root_buses.next));
+#endif
+ } else
+ printk(KERN_ERR "PCI: No PCI bus detected\n");
+ return 0;
+}
+
+subsys_initcall(pcibios_init);
+
+char *pcibios_setup(char *str)
+{
+ if (!strcmp(str, "nomodify")) {
+ pci_modify = 0;
+ return NULL;
+ } else if (!strcmp(str, "skipvga")) {
+ skip_vga = 1;
+ return NULL;
+ } else if (!strcmp(str, "noburst")) {
+ disable_pci_burst = 1;
+ return NULL;
+ }
+
+ return str;
+}
+#endif /* CONFIG_PCI */
--- a/drivers/pci/Makefile
+++ b/drivers/pci/Makefile
@@ -50,6 +50,7 @@ obj-$(CONFIG_X86_VISWS) += setup-irq.o
obj-$(CONFIG_MN10300) += setup-bus.o
obj-$(CONFIG_MICROBLAZE) += setup-bus.o
obj-$(CONFIG_TILE) += setup-bus.o setup-irq.o
+obj-$(CONFIG_M54455) += setup-bus.o setup-irq.o
#
# ACPI Related PCI FW Functions
--- a/drivers/pci/access.c
+++ b/drivers/pci/access.c
@@ -25,6 +25,7 @@ static DEFINE_RAW_SPINLOCK(pci_lock);
#define PCI_word_BAD (pos & 1)
#define PCI_dword_BAD (pos & 3)
+#ifdef NL_ORIGINAL
#define PCI_OP_READ(size,type,len) \
int pci_bus_read_config_##size \
(struct pci_bus *bus, unsigned int devfn, int pos, type *value) \
@@ -39,6 +40,23 @@ int pci_bus_read_config_##size \
raw_spin_unlock_irqrestore(&pci_lock, flags); \
return res; \
}
+#else /* NL_ORIGINAL */
+#define PCI_OP_READ(size, type, len) \
+ int pci_bus_read_config_##size \
+ (struct pci_bus *bus, unsigned int devfn, \
+ int pos, type * value) \
+{ \
+ int res; \
+ unsigned long flags; \
+ if (PCI_##size##_BAD) \
+ return PCIBIOS_BAD_REGISTER_NUMBER; \
+ raw_spin_lock_irqsave(&pci_lock, flags); \
+ res = bus->ops->read( \
+ bus, devfn, pos, len, (u32 *)value); \
+ raw_spin_unlock_irqrestore(&pci_lock, flags); \
+ return res; \
+}
+#endif /* NL_ORIGINAL */
#define PCI_OP_WRITE(size,type,len) \
int pci_bus_write_config_##size \
--- a/drivers/pci/setup-bus.c
+++ b/drivers/pci/setup-bus.c
@@ -77,7 +77,13 @@ static void __dev_sort_resources(struct
u16 class = dev->class >> 8;
/* Don't touch classless devices or host bridges or ioapics. */
+#ifdef CONFIG_M5445X
+ if (class == PCI_CLASS_NOT_DEFINED || \
+ class == PCI_CLASS_BRIDGE_HOST || \
+ class == PCI_CLASS_BRIDGE_OTHER)
+#else
if (class == PCI_CLASS_NOT_DEFINED || class == PCI_CLASS_BRIDGE_HOST)
+#endif
return;
/* Don't touch ioapic devices already enabled by firmware */
--- a/lib/iomap.c
+++ b/lib/iomap.c
@@ -227,9 +227,13 @@ EXPORT_SYMBOL(iowrite32_rep);
/* Create a virtual mapping cookie for an IO port range */
void __iomem *ioport_map(unsigned long port, unsigned int nr)
{
+#ifndef CONFIG_M54455
if (port > PIO_MASK)
return NULL;
return (void __iomem *) (unsigned long) (port + PIO_OFFSET);
+#else
+ return (void __iomem *) (unsigned long) port;
+#endif
}
void ioport_unmap(void __iomem *addr)
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