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-rw-r--r--arch/arm/mach-ixp2000/pci.c252
1 files changed, 0 insertions, 252 deletions
diff --git a/arch/arm/mach-ixp2000/pci.c b/arch/arm/mach-ixp2000/pci.c
deleted file mode 100644
index 9c02de932fac..000000000000
--- a/arch/arm/mach-ixp2000/pci.c
+++ /dev/null
@@ -1,252 +0,0 @@
-/*
- * arch/arm/mach-ixp2000/pci.c
- *
- * PCI routines for IXDP2400/IXDP2800 boards
- *
- * Original Author: Naeem Afzal <naeem.m.afzal@intel.com>
- * Maintained by: Deepak Saxena <dsaxena@plexity.net>
- *
- * Copyright 2002 Intel Corp.
- * Copyright (C) 2003-2004 MontaVista Software, 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/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 <mach/hardware.h>
-
-#include <asm/mach/pci.h>
-
-static volatile int pci_master_aborts = 0;
-
-static int clear_master_aborts(void);
-
-u32 *
-ixp2000_pci_config_addr(unsigned int bus_nr, unsigned int devfn, int where)
-{
- u32 *paddress;
-
- if (PCI_SLOT(devfn) > 7)
- return 0;
-
- /* Must be dword aligned */
- where &= ~3;
-
- /*
- * For top bus, generate type 0, else type 1
- */
- if (!bus_nr) {
- /* only bits[23:16] are used for IDSEL */
- paddress = (u32 *) (IXP2000_PCI_CFG0_VIRT_BASE
- | (1 << (PCI_SLOT(devfn) + 16))
- | (PCI_FUNC(devfn) << 8) | where);
- } else {
- paddress = (u32 *) (IXP2000_PCI_CFG1_VIRT_BASE
- | (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,
-};
-
-
-int ixp2000_pci_read_config(struct pci_bus *bus, unsigned int devfn, int where,
- int size, u32 *value)
-{
- u32 n;
- u32 *addr;
-
- n = where % 4;
-
- addr = ixp2000_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 checks by calling clear_master_aborts() b/c the
- * assumption is that the caller did a read first to make sure a device
- * exists.
- */
-int ixp2000_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 = ixp2000_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;
-}
-
-
-static struct pci_ops ixp2000_pci_ops = {
- .read = ixp2000_pci_read_config,
- .write = ixp2000_pci_write_config
-};
-
-struct pci_bus *ixp2000_pci_scan_bus(int nr, struct pci_sys_data *sysdata)
-{
- return pci_scan_root_bus(NULL, sysdata->busnr, &ixp2000_pci_ops,
- sysdata, &sysdata->resources);
-}
-
-
-int ixp2000_pci_abort_handler(unsigned long addr, unsigned int fsr, struct pt_regs *regs)
-{
-
- volatile u32 temp;
- unsigned long flags;
-
- pci_master_aborts = 1;
-
- local_irq_save(flags);
- temp = *(IXP2000_PCI_CONTROL);
- if (temp & ((1 << 8) | (1 << 5))) {
- ixp2000_reg_wrb(IXP2000_PCI_CONTROL, temp);
- }
-
- temp = *(IXP2000_PCI_CMDSTAT);
- if (temp & (1 << 29)) {
- while (temp & (1 << 29)) {
- ixp2000_reg_write(IXP2000_PCI_CMDSTAT, temp);
- temp = *(IXP2000_PCI_CMDSTAT);
- }
- }
- 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;
- unsigned long flags;
-
- local_irq_save(flags);
- temp = *(IXP2000_PCI_CONTROL);
- if (temp & ((1 << 8) | (1 << 5))) {
- ixp2000_reg_wrb(IXP2000_PCI_CONTROL, temp);
- }
-
- temp = *(IXP2000_PCI_CMDSTAT);
- if (temp & (1 << 29)) {
- while (temp & (1 << 29)) {
- ixp2000_reg_write(IXP2000_PCI_CMDSTAT, temp);
- temp = *(IXP2000_PCI_CMDSTAT);
- }
- }
- local_irq_restore(flags);
-
- return 0;
-}
-
-void __init
-ixp2000_pci_preinit(void)
-{
- pci_set_flags(0);
-
- pcibios_min_io = 0;
- pcibios_min_mem = 0;
-
-#ifndef CONFIG_IXP2000_SUPPORT_BROKEN_PCI_IO
- /*
- * Configure the PCI unit to properly byteswap I/O transactions,
- * and verify that it worked.
- */
- ixp2000_reg_write(IXP2000_PCI_CONTROL,
- (*IXP2000_PCI_CONTROL | PCI_CONTROL_IEE));
-
- if ((*IXP2000_PCI_CONTROL & PCI_CONTROL_IEE) == 0)
- panic("IXP2000: PCI I/O is broken on this ixp model, and "
- "the needed workaround has not been configured in");
-#endif
-
- hook_fault_code(16+6, ixp2000_pci_abort_handler, SIGBUS, 0,
- "PCI config cycle to non-existent device");
-}
-
-
-/*
- * IXP2000 systems often have large resource requirements, so we just
- * use our own resource space.
- */
-static struct resource ixp2000_pci_mem_space = {
- .start = 0xe0000000,
- .end = 0xffffffff,
- .flags = IORESOURCE_MEM,
- .name = "PCI Mem Space"
-};
-
-static struct resource ixp2000_pci_io_space = {
- .start = 0x00010000,
- .end = 0x0001ffff,
- .flags = IORESOURCE_IO,
- .name = "PCI I/O Space"
-};
-
-int ixp2000_pci_setup(int nr, struct pci_sys_data *sys)
-{
- if (nr >= 1)
- return 0;
-
- pci_add_resource_offset(&sys->resources,
- &ixp2000_pci_io_space, sys->io_offset);
- pci_add_resource_offset(&sys->resources,
- &ixp2000_pci_mem_space, sys->mem_offset);
-
- return 1;
-}
-