diff options
Diffstat (limited to 'arch/mips/pci/ops-tx3927.c')
| -rw-r--r-- | arch/mips/pci/ops-tx3927.c | 231 |
1 files changed, 0 insertions, 231 deletions
diff --git a/arch/mips/pci/ops-tx3927.c b/arch/mips/pci/ops-tx3927.c deleted file mode 100644 index d35dc9c9ab9d..000000000000 --- a/arch/mips/pci/ops-tx3927.c +++ /dev/null @@ -1,231 +0,0 @@ -/* - * Copyright 2001 MontaVista Software Inc. - * Author: MontaVista Software, Inc. - * ahennessy@mvista.com - * - * Copyright (C) 2000-2001 Toshiba Corporation - * Copyright (C) 2004 by Ralf Baechle (ralf@linux-mips.org) - * - * Based on arch/mips/ddb5xxx/ddb5477/pci_ops.c - * - * Define the pci_ops for TX3927. - * - * Much of the code is derived from the original DDB5074 port by - * Geert Uytterhoeven <geert@linux-m68k.org> - * - * 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 SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED - * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN - * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF - * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON - * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF - * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - * 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/types.h> -#include <linux/pci.h> -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/interrupt.h> -#include <linux/irq.h> - -#include <asm/addrspace.h> -#include <asm/txx9irq.h> -#include <asm/txx9/pci.h> -#include <asm/txx9/tx3927.h> - -static int mkaddr(struct pci_bus *bus, unsigned char devfn, unsigned char where) -{ - if (bus->parent == NULL && - devfn >= PCI_DEVFN(TX3927_PCIC_MAX_DEVNU, 0)) - return -1; - tx3927_pcicptr->ica = - ((bus->number & 0xff) << 0x10) | - ((devfn & 0xff) << 0x08) | - (where & 0xfc) | (bus->parent ? 1 : 0); - - /* clear M_ABORT and Disable M_ABORT Int. */ - tx3927_pcicptr->pcistat |= PCI_STATUS_REC_MASTER_ABORT; - tx3927_pcicptr->pcistatim &= ~PCI_STATUS_REC_MASTER_ABORT; - return 0; -} - -static inline int check_abort(void) -{ - if (tx3927_pcicptr->pcistat & PCI_STATUS_REC_MASTER_ABORT) { - tx3927_pcicptr->pcistat |= PCI_STATUS_REC_MASTER_ABORT; - tx3927_pcicptr->pcistatim |= PCI_STATUS_REC_MASTER_ABORT; - /* flush write buffer */ - iob(); - return PCIBIOS_DEVICE_NOT_FOUND; - } - return PCIBIOS_SUCCESSFUL; -} - -static int tx3927_pci_read_config(struct pci_bus *bus, unsigned int devfn, - int where, int size, u32 * val) -{ - if (mkaddr(bus, devfn, where)) { - *val = 0xffffffff; - return PCIBIOS_DEVICE_NOT_FOUND; - } - - switch (size) { - case 1: - *val = *(volatile u8 *) ((unsigned long) & tx3927_pcicptr->icd | (where & 3)); - break; - - case 2: - *val = le16_to_cpu(*(volatile u16 *) ((unsigned long) & tx3927_pcicptr->icd | (where & 3))); - break; - - case 4: - *val = le32_to_cpu(tx3927_pcicptr->icd); - break; - } - - return check_abort(); -} - -static int tx3927_pci_write_config(struct pci_bus *bus, unsigned int devfn, - int where, int size, u32 val) -{ - if (mkaddr(bus, devfn, where)) - return PCIBIOS_DEVICE_NOT_FOUND; - - switch (size) { - case 1: - *(volatile u8 *) ((unsigned long) & tx3927_pcicptr->icd | (where & 3)) = val; - break; - - case 2: - *(volatile u16 *) ((unsigned long) & tx3927_pcicptr->icd | (where & 2)) = - cpu_to_le16(val); - break; - - case 4: - tx3927_pcicptr->icd = cpu_to_le32(val); - } - - return check_abort(); -} - -static struct pci_ops tx3927_pci_ops = { - .read = tx3927_pci_read_config, - .write = tx3927_pci_write_config, -}; - -void __init tx3927_pcic_setup(struct pci_controller *channel, - unsigned long sdram_size, int extarb) -{ - unsigned long flags; - unsigned long io_base = - channel->io_resource->start + mips_io_port_base - IO_BASE; - unsigned long io_size = - channel->io_resource->end - channel->io_resource->start; - unsigned long io_pciaddr = - channel->io_resource->start - channel->io_offset; - unsigned long mem_base = - channel->mem_resource->start; - unsigned long mem_size = - channel->mem_resource->end - channel->mem_resource->start; - unsigned long mem_pciaddr = - channel->mem_resource->start - channel->mem_offset; - - printk(KERN_INFO "TX3927 PCIC -- DID:%04x VID:%04x RID:%02x Arbiter:%s", - tx3927_pcicptr->did, tx3927_pcicptr->vid, - tx3927_pcicptr->rid, - extarb ? "External" : "Internal"); - channel->pci_ops = &tx3927_pci_ops; - - local_irq_save(flags); - /* Disable External PCI Config. Access */ - tx3927_pcicptr->lbc = TX3927_PCIC_LBC_EPCAD; -#ifdef __BIG_ENDIAN - tx3927_pcicptr->lbc |= TX3927_PCIC_LBC_IBSE | - TX3927_PCIC_LBC_TIBSE | - TX3927_PCIC_LBC_TMFBSE | TX3927_PCIC_LBC_MSDSE; -#endif - /* LB->PCI mappings */ - tx3927_pcicptr->iomas = ~(io_size - 1); - tx3927_pcicptr->ilbioma = io_base; - tx3927_pcicptr->ipbioma = io_pciaddr; - tx3927_pcicptr->mmas = ~(mem_size - 1); - tx3927_pcicptr->ilbmma = mem_base; - tx3927_pcicptr->ipbmma = mem_pciaddr; - /* PCI->LB mappings */ - tx3927_pcicptr->iobas = 0xffffffff; - tx3927_pcicptr->ioba = 0; - tx3927_pcicptr->tlbioma = 0; - tx3927_pcicptr->mbas = ~(sdram_size - 1); - tx3927_pcicptr->mba = 0; - tx3927_pcicptr->tlbmma = 0; - /* Enable Direct mapping Address Space Decoder */ - tx3927_pcicptr->lbc |= TX3927_PCIC_LBC_ILMDE | TX3927_PCIC_LBC_ILIDE; - - /* Clear All Local Bus Status */ - tx3927_pcicptr->lbstat = TX3927_PCIC_LBIM_ALL; - /* Enable All Local Bus Interrupts */ - tx3927_pcicptr->lbim = TX3927_PCIC_LBIM_ALL; - /* Clear All PCI Status Error */ - tx3927_pcicptr->pcistat = TX3927_PCIC_PCISTATIM_ALL; - /* Enable All PCI Status Error Interrupts */ - tx3927_pcicptr->pcistatim = TX3927_PCIC_PCISTATIM_ALL; - - /* PCIC Int => IRC IRQ10 */ - tx3927_pcicptr->il = TX3927_IR_PCI; - /* Target Control (per errata) */ - tx3927_pcicptr->tc = TX3927_PCIC_TC_OF8E | TX3927_PCIC_TC_IF8E; - - /* Enable Bus Arbiter */ - if (!extarb) - tx3927_pcicptr->pbapmc = TX3927_PCIC_PBAPMC_PBAEN; - - tx3927_pcicptr->pcicmd = PCI_COMMAND_MASTER | - PCI_COMMAND_MEMORY | - PCI_COMMAND_IO | - PCI_COMMAND_PARITY | PCI_COMMAND_SERR; - local_irq_restore(flags); -} - -static irqreturn_t tx3927_pcierr_interrupt(int irq, void *dev_id) -{ - struct pt_regs *regs = get_irq_regs(); - - if (txx9_pci_err_action != TXX9_PCI_ERR_IGNORE) { - printk(KERN_WARNING "PCI error interrupt at 0x%08lx.\n", - regs->cp0_epc); - printk(KERN_WARNING "pcistat:%02x, lbstat:%04lx\n", - tx3927_pcicptr->pcistat, tx3927_pcicptr->lbstat); - } - if (txx9_pci_err_action != TXX9_PCI_ERR_PANIC) { - /* clear all pci errors */ - tx3927_pcicptr->pcistat |= TX3927_PCIC_PCISTATIM_ALL; - tx3927_pcicptr->istat = TX3927_PCIC_IIM_ALL; - tx3927_pcicptr->tstat = TX3927_PCIC_TIM_ALL; - tx3927_pcicptr->lbstat = TX3927_PCIC_LBIM_ALL; - return IRQ_HANDLED; - } - console_verbose(); - panic("PCI error."); -} - -void __init tx3927_setup_pcierr_irq(void) -{ - if (request_irq(TXX9_IRQ_BASE + TX3927_IR_PCI, - tx3927_pcierr_interrupt, - 0, "PCI error", - (void *)TX3927_PCIC_REG)) - printk(KERN_WARNING "Failed to request irq for PCIERR\n"); -} |