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Diffstat (limited to 'arch/arm/mach-ixp23xx/pci.c')
-rw-r--r--arch/arm/mach-ixp23xx/pci.c294
1 files changed, 0 insertions, 294 deletions
diff --git a/arch/arm/mach-ixp23xx/pci.c b/arch/arm/mach-ixp23xx/pci.c
deleted file mode 100644
index 911f5a58e006..000000000000
--- a/arch/arm/mach-ixp23xx/pci.c
+++ /dev/null
@@ -1,294 +0,0 @@
-/*
- * arch/arm/mach-ixp23xx/pci.c
- *
- * PCI routines for IXP23XX based systems
- *
- * Copyright (c) 2005 MontaVista Software, Inc.
- *
- * based on original code:
- *
- * Author: Naeem Afzal <naeem.m.afzal@intel.com>
- * Copyright 2002-2005 Intel Corp.
- *
- * 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/sched.h>
-#include <linux/kernel.h>
-#include <linux/pci.h>
-#include <linux/interrupt.h>
-#include <linux/mm.h>
-#include <linux/init.h>
-#include <linux/ioport.h>
-#include <linux/delay.h>
-#include <linux/io.h>
-
-#include <asm/irq.h>
-#include <asm/sizes.h>
-#include <asm/mach/pci.h>
-#include <mach/hardware.h>
-
-extern int (*external_fault) (unsigned long, struct pt_regs *);
-
-static volatile int pci_master_aborts = 0;
-
-#ifdef DEBUG
-#define DBG(x...) printk(x)
-#else
-#define DBG(x...)
-#endif
-
-int clear_master_aborts(void);
-
-static u32
-*ixp23xx_pci_config_addr(unsigned int bus_nr, unsigned int devfn, int where)
-{
- u32 *paddress;
-
- /*
- * Must be dword aligned
- */
- where &= ~3;
-
- /*
- * For top bus, generate type 0, else type 1
- */
- if (!bus_nr) {
- if (PCI_SLOT(devfn) >= 8)
- return 0;
-
- paddress = (u32 *) (IXP23XX_PCI_CFG0_VIRT
- | (1 << (PCI_SLOT(devfn) + 16))
- | (PCI_FUNC(devfn) << 8) | where);
- } else {
- paddress = (u32 *) (IXP23XX_PCI_CFG1_VIRT
- | (bus_nr << 16)
- | (PCI_SLOT(devfn) << 11)
- | (PCI_FUNC(devfn) << 8) | where);
- }
-
- return paddress;
-}
-
-/*
- * Mask table, bits to mask for quantity of size 1, 2 or 4 bytes.
- * 0 and 3 are not valid indexes...
- */
-static u32 bytemask[] = {
- /*0*/ 0,
- /*1*/ 0xff,
- /*2*/ 0xffff,
- /*3*/ 0,
- /*4*/ 0xffffffff,
-};
-
-static int ixp23xx_pci_read_config(struct pci_bus *bus, unsigned int devfn,
- int where, int size, u32 *value)
-{
- u32 n;
- u32 *addr;
-
- n = where % 4;
-
- DBG("In config_read(%d) %d from dev %d:%d:%d\n", size, where,
- bus->number, PCI_SLOT(devfn), PCI_FUNC(devfn));
-
- addr = ixp23xx_pci_config_addr(bus->number, devfn, where);
- if (!addr)
- return PCIBIOS_DEVICE_NOT_FOUND;
-
- pci_master_aborts = 0;
- *value = (*addr >> (8*n)) & bytemask[size];
- if (pci_master_aborts) {
- pci_master_aborts = 0;
- *value = 0xffffffff;
- return PCIBIOS_DEVICE_NOT_FOUND;
- }
-
- return PCIBIOS_SUCCESSFUL;
-}
-
-/*
- * We don't do error checking on the address for writes.
- * It's assumed that the user checked for the device existing first
- * by doing a read first.
- */
-static int ixp23xx_pci_write_config(struct pci_bus *bus, unsigned int devfn,
- int where, int size, u32 value)
-{
- u32 mask;
- u32 *addr;
- u32 temp;
-
- mask = ~(bytemask[size] << ((where % 0x4) * 8));
- addr = ixp23xx_pci_config_addr(bus->number, devfn, where);
- if (!addr)
- return PCIBIOS_DEVICE_NOT_FOUND;
- temp = (u32) (value) << ((where % 0x4) * 8);
- *addr = (*addr & mask) | temp;
-
- clear_master_aborts();
-
- return PCIBIOS_SUCCESSFUL;
-}
-
-struct pci_ops ixp23xx_pci_ops = {
- .read = ixp23xx_pci_read_config,
- .write = ixp23xx_pci_write_config,
-};
-
-struct pci_bus *ixp23xx_pci_scan_bus(int nr, struct pci_sys_data *sysdata)
-{
- return pci_scan_root_bus(NULL, sysdata->busnr, &ixp23xx_pci_ops,
- sysdata, &sysdata->resources);
-}
-
-int ixp23xx_pci_abort_handler(unsigned long addr, unsigned int fsr, struct pt_regs *regs)
-{
- volatile unsigned long temp;
- unsigned long flags;
-
- pci_master_aborts = 1;
-
- local_irq_save(flags);
- temp = *IXP23XX_PCI_CONTROL;
-
- /*
- * master abort and cmd tgt err
- */
- if (temp & ((1 << 8) | (1 << 5)))
- *IXP23XX_PCI_CONTROL = temp;
-
- temp = *IXP23XX_PCI_CMDSTAT;
-
- if (temp & (1 << 29))
- *IXP23XX_PCI_CMDSTAT = temp;
- local_irq_restore(flags);
-
- /*
- * If it was an imprecise abort, then we need to correct the
- * return address to be _after_ the instruction.
- */
- if (fsr & (1 << 10))
- regs->ARM_pc += 4;
-
- return 0;
-}
-
-int clear_master_aborts(void)
-{
- volatile u32 temp;
-
- temp = *IXP23XX_PCI_CONTROL;
-
- /*
- * master abort and cmd tgt err
- */
- if (temp & ((1 << 8) | (1 << 5)))
- *IXP23XX_PCI_CONTROL = temp;
-
- temp = *IXP23XX_PCI_CMDSTAT;
-
- if (temp & (1 << 29))
- *IXP23XX_PCI_CMDSTAT = temp;
-
- return 0;
-}
-
-static void __init ixp23xx_pci_common_init(void)
-{
-#ifdef __ARMEB__
- *IXP23XX_PCI_CONTROL |= 0x20000; /* set I/O swapping */
-#endif
- /*
- * ADDR_31 needs to be clear for PCI memory access to CPP memory
- */
- *IXP23XX_CPP2XSI_CURR_XFER_REG3 &= ~IXP23XX_CPP2XSI_ADDR_31;
- *IXP23XX_CPP2XSI_CURR_XFER_REG3 |= IXP23XX_CPP2XSI_PSH_OFF;
-
- /*
- * Select correct memory for PCI inbound transactions
- */
- if (ixp23xx_cpp_boot()) {
- *IXP23XX_PCI_CPP_ADDR_BITS &= ~(1 << 1);
- } else {
- *IXP23XX_PCI_CPP_ADDR_BITS |= (1 << 1);
-
- /*
- * Enable coherency on A2 silicon.
- */
- if (arch_is_coherent())
- *IXP23XX_CPP2XSI_CURR_XFER_REG3 &= ~IXP23XX_CPP2XSI_COH_OFF;
- }
-}
-
-void __init ixp23xx_pci_preinit(void)
-{
- pcibios_min_io = 0;
- pcibios_min_mem = 0xe0000000;
-
- pci_set_flags(0);
-
- ixp23xx_pci_common_init();
-
- hook_fault_code(16+6, ixp23xx_pci_abort_handler, SIGBUS, 0,
- "PCI config cycle to non-existent device");
-
- *IXP23XX_PCI_ADDR_EXT = 0x0000e000;
-}
-
-/*
- * Prevent PCI layer from seeing the inbound host-bridge resources
- */
-static void __devinit pci_fixup_ixp23xx(struct pci_dev *dev)
-{
- int i;
-
- dev->class &= 0xff;
- dev->class |= PCI_CLASS_BRIDGE_HOST << 8;
- for (i = 0; i < PCI_NUM_RESOURCES; i++) {
- dev->resource[i].start = 0;
- dev->resource[i].end = 0;
- dev->resource[i].flags = 0;
- }
-}
-DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x9002, pci_fixup_ixp23xx);
-
-/*
- * IXP2300 systems often have large resource requirements, so we just
- * use our own resource space.
- */
-static struct resource ixp23xx_pci_mem_space = {
- .start = IXP23XX_PCI_MEM_START,
- .end = IXP23XX_PCI_MEM_START + IXP23XX_PCI_MEM_SIZE - 1,
- .flags = IORESOURCE_MEM,
- .name = "PCI Mem Space"
-};
-
-static struct resource ixp23xx_pci_io_space = {
- .start = 0x00000100,
- .end = 0x01ffffff,
- .flags = IORESOURCE_IO,
- .name = "PCI I/O Space"
-};
-
-int ixp23xx_pci_setup(int nr, struct pci_sys_data *sys)
-{
- if (nr >= 1)
- return 0;
-
- pci_add_resource_offset(&sys->resources,
- &ixp23xx_pci_io_space, sys->io_offset);
- pci_add_resource_offset(&sys->resources,
- &ixp23xx_pci_mem_space, sys->mem_offset);
-
- return 1;
-}
-
-void __init ixp23xx_pci_slave_init(void)
-{
- ixp23xx_pci_common_init();
-}
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