2006-06-17 18:52:48 -04:00
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/*
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2008-10-07 15:00:18 -04:00
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* MPC83xx/85xx/86xx PCI/PCIE support routing.
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2006-06-17 18:52:48 -04:00
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*
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2008-10-07 15:00:18 -04:00
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* Copyright 2007,2008 Freescale Semiconductor, Inc
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2006-06-17 18:52:48 -04:00
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*
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2007-07-10 06:46:35 -04:00
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* Initial author: Xianghua Xiao <x.xiao@freescale.com>
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* Recode: ZHANG WEI <wei.zhang@freescale.com>
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* Rewrite the routing for Frescale PCI and PCI Express
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* Roy Zang <tie-fei.zang@freescale.com>
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2006-06-17 18:52:48 -04:00
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*/
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2007-07-10 06:46:35 -04:00
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#include <linux/kernel.h>
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2006-06-17 18:52:48 -04:00
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#include <linux/pci.h>
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2007-07-10 06:46:35 -04:00
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#include <linux/delay.h>
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#include <linux/string.h>
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#include <linux/init.h>
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#include <linux/bootmem.h>
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2006-06-17 18:52:48 -04:00
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#include <asm/io.h>
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#include <asm/prom.h>
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#include <asm/pci-bridge.h>
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2007-07-10 06:46:35 -04:00
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#include <asm/machdep.h>
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2006-06-17 18:52:48 -04:00
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#include <sysdev/fsl_soc.h>
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2007-07-10 06:44:34 -04:00
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#include <sysdev/fsl_pci.h>
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2006-06-17 18:52:48 -04:00
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2008-06-26 13:07:57 -04:00
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#if defined(CONFIG_PPC_85xx) || defined(CONFIG_PPC_86xx)
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2007-07-10 06:46:35 -04:00
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/* atmu setup for fsl pci/pcie controller */
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void __init setup_pci_atmu(struct pci_controller *hose, struct resource *rsrc)
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2006-06-17 18:52:48 -04:00
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{
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2007-07-10 06:46:35 -04:00
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struct ccsr_pci __iomem *pci;
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int i;
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2006-06-17 18:52:48 -04:00
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2008-01-14 18:02:19 -05:00
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pr_debug("PCI memory map start 0x%016llx, size 0x%016llx\n",
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(u64)rsrc->start, (u64)rsrc->end - (u64)rsrc->start + 1);
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2007-07-10 06:46:35 -04:00
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pci = ioremap(rsrc->start, rsrc->end - rsrc->start + 1);
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/* Disable all windows (except powar0 since its ignored) */
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for(i = 1; i < 5; i++)
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out_be32(&pci->pow[i].powar, 0);
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for(i = 0; i < 3; i++)
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out_be32(&pci->piw[i].piwar, 0);
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/* Setup outbound MEM window */
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for(i = 0; i < 3; i++)
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if (hose->mem_resources[i].flags & IORESOURCE_MEM){
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2008-01-14 18:02:19 -05:00
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resource_size_t pci_addr_start =
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hose->mem_resources[i].start -
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hose->pci_mem_offset;
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pr_debug("PCI MEM resource start 0x%016llx, size 0x%016llx.\n",
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(u64)hose->mem_resources[i].start,
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(u64)hose->mem_resources[i].end
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- (u64)hose->mem_resources[i].start + 1);
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out_be32(&pci->pow[i+1].potar, (pci_addr_start >> 12));
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2007-07-10 06:46:35 -04:00
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out_be32(&pci->pow[i+1].potear, 0);
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out_be32(&pci->pow[i+1].powbar,
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2008-01-14 18:02:19 -05:00
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(hose->mem_resources[i].start >> 12));
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2007-07-10 06:46:35 -04:00
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/* Enable, Mem R/W */
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out_be32(&pci->pow[i+1].powar, 0x80044000
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- hose->mem_resources[i].start + 1) - 1));
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}
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/* Setup outbound IO window */
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if (hose->io_resource.flags & IORESOURCE_IO){
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2008-01-14 18:02:19 -05:00
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pr_debug("PCI IO resource start 0x%016llx, size 0x%016llx, "
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"phy base 0x%016llx.\n",
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(u64)hose->io_resource.start,
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(u64)hose->io_resource.end - (u64)hose->io_resource.start + 1,
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(u64)hose->io_base_phys);
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out_be32(&pci->pow[i+1].potar, (hose->io_resource.start >> 12));
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2007-07-10 06:46:35 -04:00
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out_be32(&pci->pow[i+1].potear, 0);
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2008-01-14 18:02:19 -05:00
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out_be32(&pci->pow[i+1].powbar, (hose->io_base_phys >> 12));
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2007-07-10 06:46:35 -04:00
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/* Enable, IO R/W */
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out_be32(&pci->pow[i+1].powar, 0x80088000
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- hose->io_resource.start + 1) - 1));
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}
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/* Setup 2G inbound Memory Window @ 1 */
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out_be32(&pci->piw[2].pitar, 0x00000000);
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out_be32(&pci->piw[2].piwbar,0x00000000);
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out_be32(&pci->piw[2].piwar, PIWAR_2G);
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2006-06-17 18:52:48 -04:00
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}
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2007-07-10 06:46:35 -04:00
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void __init setup_pci_cmd(struct pci_controller *hose)
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2006-06-17 18:52:48 -04:00
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{
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u16 cmd;
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2007-07-20 17:29:09 -04:00
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int cap_x;
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2006-06-17 18:52:48 -04:00
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early_read_config_word(hose, 0, 0, PCI_COMMAND, &cmd);
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cmd |= PCI_COMMAND_SERR | PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY
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2007-07-10 06:46:35 -04:00
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| PCI_COMMAND_IO;
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2006-06-17 18:52:48 -04:00
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early_write_config_word(hose, 0, 0, PCI_COMMAND, cmd);
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2007-07-20 17:29:09 -04:00
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cap_x = early_find_capability(hose, 0, 0, PCI_CAP_ID_PCIX);
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if (cap_x) {
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int pci_x_cmd = cap_x + PCI_X_CMD;
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cmd = PCI_X_CMD_MAX_SPLIT | PCI_X_CMD_MAX_READ
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| PCI_X_CMD_ERO | PCI_X_CMD_DPERR_E;
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early_write_config_word(hose, 0, 0, pci_x_cmd, cmd);
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} else {
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early_write_config_byte(hose, 0, 0, PCI_LATENCY_TIMER, 0x80);
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}
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2006-06-28 01:37:45 -04:00
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}
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2008-05-23 09:41:02 -04:00
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static void __init setup_pci_pcsrbar(struct pci_controller *hose)
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2008-05-23 04:32:46 -04:00
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{
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2008-05-23 09:41:02 -04:00
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#ifdef CONFIG_PCI_MSI
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2008-05-23 04:32:46 -04:00
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phys_addr_t immr_base;
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immr_base = get_immrbase();
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early_write_config_dword(hose, 0, 0, PCI_BASE_ADDRESS_0, immr_base);
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#endif
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2008-05-23 09:41:02 -04:00
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}
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2008-05-23 04:32:46 -04:00
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2008-01-14 18:02:19 -05:00
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static int fsl_pcie_bus_fixup;
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2007-06-26 19:22:40 -04:00
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2008-01-14 18:02:19 -05:00
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static void __init quirk_fsl_pcie_header(struct pci_dev *dev)
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{
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2007-07-11 14:31:58 -04:00
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/* if we aren't a PCIe don't bother */
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if (!pci_find_capability(dev, PCI_CAP_ID_EXP))
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return ;
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2008-01-14 18:02:19 -05:00
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dev->class = PCI_CLASS_BRIDGE_PCI << 8;
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fsl_pcie_bus_fixup = 1;
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return ;
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2007-06-26 19:22:40 -04:00
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}
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2007-07-10 06:46:35 -04:00
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int __init fsl_pcie_check_link(struct pci_controller *hose)
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{
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2007-10-04 00:37:33 -04:00
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u32 val;
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early_read_config_dword(hose, 0, 0, PCIE_LTSSM, &val);
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2007-07-10 06:46:35 -04:00
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if (val < PCIE_LTSSM_L0)
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return 1;
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return 0;
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}
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2007-06-26 19:22:40 -04:00
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2007-07-19 16:29:53 -04:00
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void fsl_pcibios_fixup_bus(struct pci_bus *bus)
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{
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struct pci_controller *hose = (struct pci_controller *) bus->sysdata;
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int i;
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2008-01-14 18:02:19 -05:00
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if ((bus->parent == hose->bus) &&
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((fsl_pcie_bus_fixup &&
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early_find_capability(hose, 0, 0, PCI_CAP_ID_EXP)) ||
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(hose->indirect_type & PPC_INDIRECT_TYPE_NO_PCIE_LINK)))
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{
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for (i = 0; i < 4; ++i) {
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struct resource *res = bus->resource[i];
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struct resource *par = bus->parent->resource[i];
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if (res) {
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res->start = 0;
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res->end = 0;
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res->flags = 0;
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}
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if (res && par) {
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res->start = par->start;
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res->end = par->end;
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res->flags = par->flags;
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}
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2007-07-19 16:29:53 -04:00
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}
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}
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}
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2007-07-10 06:46:35 -04:00
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int __init fsl_add_bridge(struct device_node *dev, int is_primary)
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2006-06-17 18:52:48 -04:00
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{
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int len;
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struct pci_controller *hose;
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struct resource rsrc;
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2006-07-12 01:39:42 -04:00
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const int *bus_range;
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2006-06-17 18:52:48 -04:00
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2007-07-10 06:46:35 -04:00
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pr_debug("Adding PCI host bridge %s\n", dev->full_name);
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2006-06-17 18:52:48 -04:00
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/* Fetch host bridge registers address */
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2007-07-10 06:46:35 -04:00
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if (of_address_to_resource(dev, 0, &rsrc)) {
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printk(KERN_WARNING "Can't get pci register base!");
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return -ENOMEM;
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}
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2006-06-17 18:52:48 -04:00
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/* Get bus range if any */
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2007-04-03 08:26:41 -04:00
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bus_range = of_get_property(dev, "bus-range", &len);
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2006-06-17 18:52:48 -04:00
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if (bus_range == NULL || len < 2 * sizeof(int))
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printk(KERN_WARNING "Can't get bus-range for %s, assume"
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2007-07-10 06:46:35 -04:00
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" bus 0\n", dev->full_name);
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2006-06-17 18:52:48 -04:00
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2007-12-19 22:54:46 -05:00
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ppc_pci_flags |= PPC_PCI_REASSIGN_ALL_BUS;
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2007-06-27 02:56:50 -04:00
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hose = pcibios_alloc_controller(dev);
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2006-06-17 18:52:48 -04:00
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if (!hose)
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return -ENOMEM;
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2007-06-27 02:56:50 -04:00
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2006-06-17 18:52:48 -04:00
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hose->first_busno = bus_range ? bus_range[0] : 0x0;
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2007-05-21 23:38:26 -04:00
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hose->last_busno = bus_range ? bus_range[1] : 0xff;
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2006-06-17 18:52:48 -04:00
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2007-07-19 17:07:35 -04:00
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setup_indirect_pci(hose, rsrc.start, rsrc.start + 0x4,
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PPC_INDIRECT_TYPE_BIG_ENDIAN);
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2007-07-10 06:46:35 -04:00
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setup_pci_cmd(hose);
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2006-06-17 18:52:48 -04:00
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2007-07-10 06:46:35 -04:00
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/* check PCI express link status */
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2007-07-11 14:31:58 -04:00
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if (early_find_capability(hose, 0, 0, PCI_CAP_ID_EXP)) {
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2007-07-25 01:29:53 -04:00
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hose->indirect_type |= PPC_INDIRECT_TYPE_EXT_REG |
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2007-07-11 14:31:58 -04:00
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PPC_INDIRECT_TYPE_SURPRESS_PRIMARY_BUS;
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2007-07-10 06:46:35 -04:00
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if (fsl_pcie_check_link(hose))
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2007-07-11 14:31:58 -04:00
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hose->indirect_type |= PPC_INDIRECT_TYPE_NO_PCIE_LINK;
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}
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2006-06-17 18:52:48 -04:00
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2007-11-19 20:47:55 -05:00
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printk(KERN_INFO "Found FSL PCI host bridge at 0x%016llx. "
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2007-07-10 06:46:35 -04:00
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"Firmware bus number: %d->%d\n",
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(unsigned long long)rsrc.start, hose->first_busno,
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hose->last_busno);
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2006-06-17 18:52:48 -04:00
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2007-07-10 06:46:35 -04:00
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pr_debug(" ->Hose at 0x%p, cfg_addr=0x%p,cfg_data=0x%p\n",
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2006-06-17 18:52:48 -04:00
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hose, hose->cfg_addr, hose->cfg_data);
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/* Interpret the "ranges" property */
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/* This also maps the I/O region and sets isa_io/mem_base */
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2007-07-10 06:46:35 -04:00
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pci_process_bridge_OF_ranges(hose, dev, is_primary);
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2006-06-17 18:52:48 -04:00
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/* Setup PEX window registers */
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2007-07-10 06:46:35 -04:00
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setup_pci_atmu(hose, &rsrc);
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2006-06-17 18:52:48 -04:00
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2008-05-23 04:32:46 -04:00
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/* Setup PEXCSRBAR */
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setup_pci_pcsrbar(hose);
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2006-06-17 18:52:48 -04:00
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return 0;
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}
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2007-07-10 06:46:35 -04:00
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2008-01-14 18:02:19 -05:00
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DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8548E, quirk_fsl_pcie_header);
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DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8548, quirk_fsl_pcie_header);
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DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8543E, quirk_fsl_pcie_header);
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DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8543, quirk_fsl_pcie_header);
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DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8547E, quirk_fsl_pcie_header);
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DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8545E, quirk_fsl_pcie_header);
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DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8545, quirk_fsl_pcie_header);
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DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8568E, quirk_fsl_pcie_header);
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DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8568, quirk_fsl_pcie_header);
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DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8567E, quirk_fsl_pcie_header);
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DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8567, quirk_fsl_pcie_header);
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DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8533E, quirk_fsl_pcie_header);
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DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8533, quirk_fsl_pcie_header);
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DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8544E, quirk_fsl_pcie_header);
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DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8544, quirk_fsl_pcie_header);
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DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8572E, quirk_fsl_pcie_header);
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DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8572, quirk_fsl_pcie_header);
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2008-07-02 02:36:15 -04:00
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DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8536E, quirk_fsl_pcie_header);
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DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8536, quirk_fsl_pcie_header);
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2008-01-14 18:02:19 -05:00
|
|
|
DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8641, quirk_fsl_pcie_header);
|
|
|
|
DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8641D, quirk_fsl_pcie_header);
|
|
|
|
DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8610, quirk_fsl_pcie_header);
|
2008-06-26 13:07:57 -04:00
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#endif /* CONFIG_PPC_85xx || CONFIG_PPC_86xx */
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|
2008-10-07 17:13:18 -04:00
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#if defined(CONFIG_PPC_83xx) || defined(CONFIG_PPC_MPC512x)
|
2008-06-26 13:07:57 -04:00
|
|
|
int __init mpc83xx_add_bridge(struct device_node *dev)
|
|
|
|
{
|
|
|
|
int len;
|
|
|
|
struct pci_controller *hose;
|
2008-10-07 15:00:18 -04:00
|
|
|
struct resource rsrc_reg;
|
|
|
|
struct resource rsrc_cfg;
|
2008-06-26 13:07:57 -04:00
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|
const int *bus_range;
|
2008-10-07 15:00:18 -04:00
|
|
|
int primary;
|
2008-06-26 13:07:57 -04:00
|
|
|
|
|
|
|
pr_debug("Adding PCI host bridge %s\n", dev->full_name);
|
|
|
|
|
|
|
|
/* Fetch host bridge registers address */
|
2008-10-07 15:00:18 -04:00
|
|
|
if (of_address_to_resource(dev, 0, &rsrc_reg)) {
|
|
|
|
printk(KERN_WARNING "Can't get pci register base!\n");
|
|
|
|
return -ENOMEM;
|
|
|
|
}
|
|
|
|
|
|
|
|
memset(&rsrc_cfg, 0, sizeof(rsrc_cfg));
|
|
|
|
|
|
|
|
if (of_address_to_resource(dev, 1, &rsrc_cfg)) {
|
|
|
|
printk(KERN_WARNING
|
|
|
|
"No pci config register base in dev tree, "
|
|
|
|
"using default\n");
|
|
|
|
/*
|
|
|
|
* MPC83xx supports up to two host controllers
|
|
|
|
* one at 0x8500 has config space registers at 0x8300
|
|
|
|
* one at 0x8600 has config space registers at 0x8380
|
|
|
|
*/
|
|
|
|
if ((rsrc_reg.start & 0xfffff) == 0x8500)
|
|
|
|
rsrc_cfg.start = (rsrc_reg.start & 0xfff00000) + 0x8300;
|
|
|
|
else if ((rsrc_reg.start & 0xfffff) == 0x8600)
|
|
|
|
rsrc_cfg.start = (rsrc_reg.start & 0xfff00000) + 0x8380;
|
|
|
|
}
|
|
|
|
/*
|
|
|
|
* Controller at offset 0x8500 is primary
|
|
|
|
*/
|
|
|
|
if ((rsrc_reg.start & 0xfffff) == 0x8500)
|
|
|
|
primary = 1;
|
|
|
|
else
|
|
|
|
primary = 0;
|
2008-06-26 13:07:57 -04:00
|
|
|
|
|
|
|
/* Get bus range if any */
|
|
|
|
bus_range = of_get_property(dev, "bus-range", &len);
|
|
|
|
if (bus_range == NULL || len < 2 * sizeof(int)) {
|
|
|
|
printk(KERN_WARNING "Can't get bus-range for %s, assume"
|
|
|
|
" bus 0\n", dev->full_name);
|
|
|
|
}
|
|
|
|
|
|
|
|
ppc_pci_flags |= PPC_PCI_REASSIGN_ALL_BUS;
|
|
|
|
hose = pcibios_alloc_controller(dev);
|
|
|
|
if (!hose)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
hose->first_busno = bus_range ? bus_range[0] : 0;
|
|
|
|
hose->last_busno = bus_range ? bus_range[1] : 0xff;
|
|
|
|
|
2008-10-07 15:00:18 -04:00
|
|
|
setup_indirect_pci(hose, rsrc_cfg.start, rsrc_cfg.start + 4, 0);
|
2008-06-26 13:07:57 -04:00
|
|
|
|
2008-10-07 17:13:18 -04:00
|
|
|
printk(KERN_INFO "Found FSL PCI host bridge at 0x%016llx. "
|
2008-06-26 13:07:57 -04:00
|
|
|
"Firmware bus number: %d->%d\n",
|
2008-10-07 15:00:18 -04:00
|
|
|
(unsigned long long)rsrc_reg.start, hose->first_busno,
|
2008-06-26 13:07:57 -04:00
|
|
|
hose->last_busno);
|
|
|
|
|
|
|
|
pr_debug(" ->Hose at 0x%p, cfg_addr=0x%p,cfg_data=0x%p\n",
|
|
|
|
hose, hose->cfg_addr, hose->cfg_data);
|
|
|
|
|
|
|
|
/* Interpret the "ranges" property */
|
|
|
|
/* This also maps the I/O region and sets isa_io/mem_base */
|
|
|
|
pci_process_bridge_OF_ranges(hose, dev, primary);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
#endif /* CONFIG_PPC_83xx */
|