diff options
Diffstat (limited to 'ANDROID_3.4.5/arch/powerpc/kernel/pci_dn.c')
-rw-r--r-- | ANDROID_3.4.5/arch/powerpc/kernel/pci_dn.c | 165 |
1 files changed, 0 insertions, 165 deletions
diff --git a/ANDROID_3.4.5/arch/powerpc/kernel/pci_dn.c b/ANDROID_3.4.5/arch/powerpc/kernel/pci_dn.c deleted file mode 100644 index dd9e4a04..00000000 --- a/ANDROID_3.4.5/arch/powerpc/kernel/pci_dn.c +++ /dev/null @@ -1,165 +0,0 @@ -/* - * pci_dn.c - * - * Copyright (C) 2001 Todd Inglett, IBM Corporation - * - * PCI manipulation via device_nodes. - * - * 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 program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ -#include <linux/kernel.h> -#include <linux/pci.h> -#include <linux/string.h> -#include <linux/export.h> -#include <linux/init.h> -#include <linux/gfp.h> - -#include <asm/io.h> -#include <asm/prom.h> -#include <asm/pci-bridge.h> -#include <asm/ppc-pci.h> -#include <asm/firmware.h> - -/* - * Traverse_func that inits the PCI fields of the device node. - * NOTE: this *must* be done before read/write config to the device. - */ -void * __devinit update_dn_pci_info(struct device_node *dn, void *data) -{ - struct pci_controller *phb = data; - const int *type = - of_get_property(dn, "ibm,pci-config-space-type", NULL); - const u32 *regs; - struct pci_dn *pdn; - - pdn = zalloc_maybe_bootmem(sizeof(*pdn), GFP_KERNEL); - if (pdn == NULL) - return NULL; - dn->data = pdn; - pdn->node = dn; - pdn->phb = phb; -#ifdef CONFIG_PPC_POWERNV - pdn->pe_number = IODA_INVALID_PE; -#endif - regs = of_get_property(dn, "reg", NULL); - if (regs) { - /* First register entry is addr (00BBSS00) */ - pdn->busno = (regs[0] >> 16) & 0xff; - pdn->devfn = (regs[0] >> 8) & 0xff; - } - - pdn->pci_ext_config_space = (type && *type == 1); - return NULL; -} - -/* - * Traverse a device tree stopping each PCI device in the tree. - * This is done depth first. As each node is processed, a "pre" - * function is called and the children are processed recursively. - * - * The "pre" func returns a value. If non-zero is returned from - * the "pre" func, the traversal stops and this value is returned. - * This return value is useful when using traverse as a method of - * finding a device. - * - * NOTE: we do not run the func for devices that do not appear to - * be PCI except for the start node which we assume (this is good - * because the start node is often a phb which may be missing PCI - * properties). - * We use the class-code as an indicator. If we run into - * one of these nodes we also assume its siblings are non-pci for - * performance. - */ -void *traverse_pci_devices(struct device_node *start, traverse_func pre, - void *data) -{ - struct device_node *dn, *nextdn; - void *ret; - - /* We started with a phb, iterate all childs */ - for (dn = start->child; dn; dn = nextdn) { - const u32 *classp; - u32 class; - - nextdn = NULL; - classp = of_get_property(dn, "class-code", NULL); - class = classp ? *classp : 0; - - if (pre && ((ret = pre(dn, data)) != NULL)) - return ret; - - /* If we are a PCI bridge, go down */ - if (dn->child && ((class >> 8) == PCI_CLASS_BRIDGE_PCI || - (class >> 8) == PCI_CLASS_BRIDGE_CARDBUS)) - /* Depth first...do children */ - nextdn = dn->child; - else if (dn->sibling) - /* ok, try next sibling instead. */ - nextdn = dn->sibling; - if (!nextdn) { - /* Walk up to next valid sibling. */ - do { - dn = dn->parent; - if (dn == start) - return NULL; - } while (dn->sibling == NULL); - nextdn = dn->sibling; - } - } - return NULL; -} - -/** - * pci_devs_phb_init_dynamic - setup pci devices under this PHB - * phb: pci-to-host bridge (top-level bridge connecting to cpu) - * - * This routine is called both during boot, (before the memory - * subsystem is set up, before kmalloc is valid) and during the - * dynamic lpar operation of adding a PHB to a running system. - */ -void __devinit pci_devs_phb_init_dynamic(struct pci_controller *phb) -{ - struct device_node *dn = phb->dn; - struct pci_dn *pdn; - - /* PHB nodes themselves must not match */ - update_dn_pci_info(dn, phb); - pdn = dn->data; - if (pdn) { - pdn->devfn = pdn->busno = -1; - pdn->phb = phb; - } - - /* Update dn->phb ptrs for new phb and children devices */ - traverse_pci_devices(dn, update_dn_pci_info, phb); -} - -/** - * pci_devs_phb_init - Initialize phbs and pci devs under them. - * - * This routine walks over all phb's (pci-host bridges) on the - * system, and sets up assorted pci-related structures - * (including pci info in the device node structs) for each - * pci device found underneath. This routine runs once, - * early in the boot sequence. - */ -void __init pci_devs_phb_init(void) -{ - struct pci_controller *phb, *tmp; - - /* This must be done first so the device nodes have valid pci info! */ - list_for_each_entry_safe(phb, tmp, &hose_list, list_node) - pci_devs_phb_init_dynamic(phb); -} |