summaryrefslogtreecommitdiff
path: root/ANDROID_3.4.5/arch/powerpc/kernel/pci_dn.c
diff options
context:
space:
mode:
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.c165
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);
-}