[POWERPC] spufs: Fix context destroy vs /spu readdir race

[linux-2.6-omap-h63xx.git] / arch / powerpc / kernel / pci-common.c

diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c
index b518b880d2eb6c69df4b2aefefdcd7176039ce0b..2ae3b6f778a3c4e5cff5922c10c96a705d44c2de 100644 (file)
--- a/arch/powerpc/kernel/pci-common.c
+++ b/arch/powerpc/kernel/pci-common.c
@@ -1,5 +1,14 @@
 /*
  * Contains common pci routines for ALL ppc platform
+ * (based on pci_32.c and pci_64.c)
+ *
+ * Port for PPC64 David Engebretsen, IBM Corp.
+ * Contains common pci routines for ppc64 platform, pSeries and iSeries brands.
+ *
+ * Copyright (C) 2003 Anton Blanchard <anton@au.ibm.com>, IBM
+ *   Rework, based on alpha PCI code.
+ *
+ * Common pmac/prep/chrp pci routines. -- Cort
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
@@ -36,6 +45,82 @@
 #define DBG(fmt...)
 #endif
 
+static DEFINE_SPINLOCK(hose_spinlock);
+
+/* XXX kill that some day ... */
+int global_phb_number;         /* Global phb counter */
+
+extern struct list_head hose_list;
+
+/*
+ * pci_controller(phb) initialized common variables.
+ */
+static void __devinit pci_setup_pci_controller(struct pci_controller *hose)
+{
+       memset(hose, 0, sizeof(struct pci_controller));
+
+       spin_lock(&hose_spinlock);
+       hose->global_number = global_phb_number++;
+       list_add_tail(&hose->list_node, &hose_list);
+       spin_unlock(&hose_spinlock);
+}
+
+struct pci_controller * pcibios_alloc_controller(struct device_node *dev)
+{
+       struct pci_controller *phb;
+
+       phb = alloc_maybe_bootmem(sizeof(struct pci_controller), GFP_KERNEL);
+       if (phb == NULL)
+               return NULL;
+       pci_setup_pci_controller(phb);
+       phb->arch_data = dev;
+       phb->is_dynamic = mem_init_done;
+#ifdef CONFIG_PPC64
+       if (dev) {
+               int nid = of_node_to_nid(dev);
+
+               if (nid < 0 || !node_online(nid))
+                       nid = -1;
+
+               PHB_SET_NODE(phb, nid);
+       }
+#endif
+       return phb;
+}
+
+void pcibios_free_controller(struct pci_controller *phb)
+{
+       spin_lock(&hose_spinlock);
+       list_del(&phb->list_node);
+       spin_unlock(&hose_spinlock);
+
+       if (phb->is_dynamic)
+               kfree(phb);
+}
+
+int pcibios_vaddr_is_ioport(void __iomem *address)
+{
+       int ret = 0;
+       struct pci_controller *hose;
+       unsigned long size;
+
+       spin_lock(&hose_spinlock);
+       list_for_each_entry(hose, &hose_list, list_node) {
+#ifdef CONFIG_PPC64
+               size = hose->pci_io_size;
+#else
+               size = hose->io_resource.end - hose->io_resource.start + 1;
+#endif
+               if (address >= hose->io_base_virt &&
+                   address < (hose->io_base_virt + size)) {
+                       ret = 1;
+                       break;
+               }
+       }
+       spin_unlock(&hose_spinlock);
+       return ret;
+}
+
 /*
  * Return the domain number for this bus.
  */
@@ -53,6 +138,28 @@ int pci_domain_nr(struct pci_bus *bus)
 EXPORT_SYMBOL(pci_domain_nr);
 
 #ifdef CONFIG_PPC_OF
+
+/* This routine is meant to be used early during boot, when the
+ * PCI bus numbers have not yet been assigned, and you need to
+ * issue PCI config cycles to an OF device.
+ * It could also be used to "fix" RTAS config cycles if you want
+ * to set pci_assign_all_buses to 1 and still use RTAS for PCI
+ * config cycles.
+ */
+struct pci_controller* pci_find_hose_for_OF_device(struct device_node* node)
+{
+       if (!have_of)
+               return NULL;
+       while(node) {
+               struct pci_controller *hose, *tmp;
+               list_for_each_entry_safe(hose, tmp, &hose_list, list_node)
+                       if (hose->arch_data == node)
+                               return hose;
+               node = node->parent;
+       }
+       return NULL;
+}
+
 static ssize_t pci_show_devspec(struct device *dev,
                struct device_attribute *attr, char *buf)
 {
@@ -69,14 +176,17 @@ static DEVICE_ATTR(devspec, S_IRUGO, pci_show_devspec, NULL);
 #endif /* CONFIG_PPC_OF */
 
 /* Add sysfs properties */
-void pcibios_add_platform_entries(struct pci_dev *pdev)
+int pcibios_add_platform_entries(struct pci_dev *pdev)
 {
 #ifdef CONFIG_PPC_OF
-       device_create_file(&pdev->dev, &dev_attr_devspec);
+       return device_create_file(&pdev->dev, &dev_attr_devspec);
+#else
+       return 0;
 #endif /* CONFIG_PPC_OF */
+
 }
 
-char __init *pcibios_setup(char *str)
+char __devinit *pcibios_setup(char *str)
 {
        return str;
 }