Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 200 insertions, 0 deletions

diff --git a/drivers/pci/setup-res.c b/drivers/pci/setup-res.c
new file mode 100644
index 00000000000..1ca21d2ba11
--- /dev/null
+++ b/drivers/pci/setup-res.c
@@ -0,0 +1,200 @@
+/*
+ *	drivers/pci/setup-res.c
+ *
+ * Extruded from code written by
+ *      Dave Rusling (david.rusling@reo.mts.dec.com)
+ *      David Mosberger (davidm@cs.arizona.edu)
+ *	David Miller (davem@redhat.com)
+ *
+ * Support routines for initializing a PCI subsystem.
+ */
+
+/* fixed for multiple pci buses, 1999 Andrea Arcangeli <andrea@suse.de> */
+
+/*
+ * Nov 2000, Ivan Kokshaysky <ink@jurassic.park.msu.ru>
+ *	     Resource sorting
+ */
+
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/pci.h>
+#include <linux/errno.h>
+#include <linux/ioport.h>
+#include <linux/cache.h>
+#include <linux/slab.h>
+#include "pci.h"
+
+
+static void
+pci_update_resource(struct pci_dev *dev, struct resource *res, int resno)
+{
+	struct pci_bus_region region;
+	u32 new, check, mask;
+	int reg;
+
+	pcibios_resource_to_bus(dev, &region, res);
+
+	pr_debug("  got res [%lx:%lx] bus [%lx:%lx] flags %lx for "
+		 "BAR %d of %s\n", res->start, res->end,
+		 region.start, region.end, res->flags, resno, pci_name(dev));
+
+	new = region.start | (res->flags & PCI_REGION_FLAG_MASK);
+	if (res->flags & IORESOURCE_IO)
+		mask = (u32)PCI_BASE_ADDRESS_IO_MASK;
+	else
+		mask = (u32)PCI_BASE_ADDRESS_MEM_MASK;
+
+	if (resno < 6) {
+		reg = PCI_BASE_ADDRESS_0 + 4 * resno;
+	} else if (resno == PCI_ROM_RESOURCE) {
+		new |= res->flags & IORESOURCE_ROM_ENABLE;
+		reg = dev->rom_base_reg;
+	} else {
+		/* Hmm, non-standard resource. */
+	
+		return;		/* kill uninitialised var warning */
+	}
+
+	pci_write_config_dword(dev, reg, new);
+	pci_read_config_dword(dev, reg, &check);
+
+	if ((new ^ check) & mask) {
+		printk(KERN_ERR "PCI: Error while updating region "
+		       "%s/%d (%08x != %08x)\n", pci_name(dev), resno,
+		       new, check);
+	}
+
+	if ((new & (PCI_BASE_ADDRESS_SPACE|PCI_BASE_ADDRESS_MEM_TYPE_MASK)) ==
+	    (PCI_BASE_ADDRESS_SPACE_MEMORY|PCI_BASE_ADDRESS_MEM_TYPE_64)) {
+		new = 0; /* currently everyone zeros the high address */
+		pci_write_config_dword(dev, reg + 4, new);
+		pci_read_config_dword(dev, reg + 4, &check);
+		if (check != new) {
+			printk(KERN_ERR "PCI: Error updating region "
+			       "%s/%d (high %08x != %08x)\n",
+			       pci_name(dev), resno, new, check);
+		}
+	}
+	res->flags &= ~IORESOURCE_UNSET;
+	pr_debug("PCI: moved device %s resource %d (%lx) to %x\n",
+		pci_name(dev), resno, res->flags,
+		new & ~PCI_REGION_FLAG_MASK);
+}
+
+int __devinit
+pci_claim_resource(struct pci_dev *dev, int resource)
+{
+	struct resource *res = &dev->resource[resource];
+	struct resource *root = NULL;
+	char *dtype = resource < PCI_BRIDGE_RESOURCES ? "device" : "bridge";
+	int err;
+
+	if (res->flags & IORESOURCE_IO)
+		root = &ioport_resource;
+	if (res->flags & IORESOURCE_MEM)
+		root = &iomem_resource;
+
+	err = -EINVAL;
+	if (root != NULL)
+		err = insert_resource(root, res);
+
+	if (err) {
+		printk(KERN_ERR "PCI: %s region %d of %s %s [%lx:%lx]\n",
+		       root ? "Address space collision on" :
+			      "No parent found for",
+		       resource, dtype, pci_name(dev), res->start, res->end);
+	}
+
+	return err;
+}
+
+int pci_assign_resource(struct pci_dev *dev, int resno)
+{
+	struct pci_bus *bus = dev->bus;
+	struct resource *res = dev->resource + resno;
+	unsigned long size, min, align;
+	int ret;
+
+	size = res->end - res->start + 1;
+	min = (res->flags & IORESOURCE_IO) ? PCIBIOS_MIN_IO : PCIBIOS_MIN_MEM;
+	/* The bridge resources are special, as their
+	   size != alignment. Sizing routines return
+	   required alignment in the "start" field. */
+	align = (resno < PCI_BRIDGE_RESOURCES) ? size : res->start;
+
+	/* First, try exact prefetching match.. */
+	ret = pci_bus_alloc_resource(bus, res, size, align, min,
+				     IORESOURCE_PREFETCH,
+				     pcibios_align_resource, dev);
+
+	if (ret < 0 && (res->flags & IORESOURCE_PREFETCH)) {
+		/*
+		 * That failed.
+		 *
+		 * But a prefetching area can handle a non-prefetching
+		 * window (it will just not perform as well).
+		 */
+		ret = pci_bus_alloc_resource(bus, res, size, align, min, 0,
+					     pcibios_align_resource, dev);
+	}
+
+	if (ret) {
+		printk(KERN_ERR "PCI: Failed to allocate %s resource #%d:%lx@%lx for %s\n",
+		       res->flags & IORESOURCE_IO ? "I/O" : "mem",
+		       resno, size, res->start, pci_name(dev));
+	} else if (resno < PCI_BRIDGE_RESOURCES) {
+		pci_update_resource(dev, res, resno);
+	}
+
+	return ret;
+}
+
+/* Sort resources by alignment */
+void __devinit
+pdev_sort_resources(struct pci_dev *dev, struct resource_list *head)
+{
+	int i;
+
+	for (i = 0; i < PCI_NUM_RESOURCES; i++) {
+		struct resource *r;
+		struct resource_list *list, *tmp;
+		unsigned long r_align;
+
+		r = &dev->resource[i];
+		r_align = r->end - r->start;
+		
+		if (!(r->flags) || r->parent)
+			continue;
+		if (!r_align) {
+			printk(KERN_WARNING "PCI: Ignore bogus resource %d "
+					    "[%lx:%lx] of %s\n",
+					    i, r->start, r->end, pci_name(dev));
+			continue;
+		}
+		r_align = (i < PCI_BRIDGE_RESOURCES) ? r_align + 1 : r->start;
+		for (list = head; ; list = list->next) {
+			unsigned long align = 0;
+			struct resource_list *ln = list->next;
+			int idx;
+
+			if (ln) {
+				idx = ln->res - &ln->dev->resource[0];
+				align = (idx < PCI_BRIDGE_RESOURCES) ?
+					ln->res->end - ln->res->start + 1 :
+					ln->res->start;
+			}
+			if (r_align > align) {
+				tmp = kmalloc(sizeof(*tmp), GFP_KERNEL);
+				if (!tmp)
+					panic("pdev_sort_resources(): "
+					      "kmalloc() failed!\n");
+				tmp->next = ln;
+				tmp->res = r;
+				tmp->dev = dev;
+				list->next = tmp;
+				break;
+			}
+		}
+	}
+}