spruce_pci.c
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上传日期:2013-04-10
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文件大小:3k
- /*
- * arch/ppc/platforms/spruce_pci.c
- *
- * PCI support for IBM Spruce
- *
- * Author: Johnnie Peters
- * jpeters@mvista.com
- *
- * Copyright 2000 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.
- *
- * 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/kernel.h>
- #include <linux/init.h>
- #include <linux/pci.h>
- #include <linux/slab.h>
- #include <asm/byteorder.h>
- #include <asm/io.h>
- #include <asm/uaccess.h>
- #include <asm/machdep.h>
- #include <asm/pci-bridge.h>
- #include <platforms/spruce.h>
- #include "cpc700.h"
- static inline int
- spruce_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin)
- {
- static char pci_irq_table[][4] =
- /*
- * PCI IDSEL/INTPIN->INTLINE
- * A B C D
- */
- {
- {23, 24, 25, 26}, /* IDSEL 1 - PCI slot 3 */
- {24, 25, 26, 23}, /* IDSEL 2 - PCI slot 2 */
- {25, 26, 23, 24}, /* IDSEL 3 - PCI slot 1 */
- {26, 23, 24, 25}, /* IDSEL 4 - PCI slot 0 */
- };
- const long min_idsel = 1, max_idsel = 4, irqs_per_slot = 4;
- return PCI_IRQ_TABLE_LOOKUP;
- }
- void __init
- spruce_setup_hose(void)
- {
- struct pci_controller *hose;
- /* Setup hose */
- hose = pcibios_alloc_controller();
- if (!hose)
- return;
- hose->first_busno = 0;
- hose->last_busno = 0xff;
- pci_init_resource(&hose->io_resource,
- SPRUCE_PCI_LOWER_IO,
- SPRUCE_PCI_UPPER_IO,
- IORESOURCE_IO,
- "PCI host bridge");
- pci_init_resource(&hose->mem_resources[0],
- SPRUCE_PCI_LOWER_MEM,
- SPRUCE_PCI_UPPER_MEM,
- IORESOURCE_MEM,
- "PCI host bridge");
- hose->io_space.start = SPRUCE_PCI_LOWER_IO;
- hose->io_space.end = SPRUCE_PCI_UPPER_IO;
- hose->mem_space.start = SPRUCE_PCI_LOWER_MEM;
- hose->mem_space.end = SPRUCE_PCI_UPPER_MEM;
- hose->io_base_virt = (void *)SPRUCE_ISA_IO_BASE;
- setup_indirect_pci(hose,
- SPRUCE_PCI_CONFIG_ADDR,
- SPRUCE_PCI_CONFIG_DATA);
- hose->last_busno = pciauto_bus_scan(hose, hose->first_busno);
- ppc_md.pci_swizzle = common_swizzle;
- ppc_md.pci_map_irq = spruce_map_irq;
- }