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Subject[PATCH -v2 21/26] PCI: Add helpers for add addon_resource
Date
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
---
drivers/pci/probe.c | 68 +++++++++++++++++++++++++++++++++++++++++++++++++++
include/linux/pci.h | 5 +++
2 files changed, 73 insertions(+), 0 deletions(-)
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index 6dbad5b..9d544c9 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -103,6 +103,74 @@ int pci_dev_resource_idx(struct pci_dev *dev, struct resource *res)
return -1;
}

+struct pci_dev_addon_resource *__add_pci_dev_addon_resource(
+ struct pci_dev *dev, int addr, char *name)
+{
+ struct pci_dev_addon_resource *addon_res;
+
+ addon_res = kzalloc(sizeof(*addon_res), GFP_KERNEL);
+
+ if (!addon_res)
+ return NULL;
+
+ addon_res->reg_addr = addr;
+
+ if (name)
+ addon_res->res.name = name;
+ else
+ addon_res->res.name = pci_name(dev);
+
+ list_add_tail(&addon_res->list, &dev->addon_resources);
+
+ return addon_res;
+}
+
+struct pci_dev_addon_resource *add_pci_dev_addon_fixed_resource(
+ struct pci_dev *dev, int start, int size, int flags,
+ int addr, char *name)
+{
+ struct pci_dev_addon_resource *addon_res;
+ struct resource *res;
+
+ addon_res = __add_pci_dev_addon_resource(dev, addr, name);
+ if (addon_res)
+ return NULL;
+
+ res = &addon_res->res;
+ res->start = start;
+ res->end = start + size - 1;
+ res->flags = flags | IORESOURCE_PCI_FIXED;
+
+ dev_printk(KERN_DEBUG, &dev->dev,
+ "addon fixed resource %s %pR added\n", res->name, res);
+
+ return addon_res;
+}
+
+struct pci_dev_addon_resource *add_pci_dev_addon_resource(struct pci_dev *dev,
+ int addr, int size, struct resource_ops *ops, char *name)
+{
+ struct pci_dev_addon_resource *addon_res;
+ struct resource *res;
+
+ addon_res = __add_pci_dev_addon_resource(dev, addr, name);
+ if (!addon_res)
+ return NULL;
+
+ res = &addon_res->res;
+ if (ops) {
+ addon_res->ops = ops;
+ addon_res->size = size;
+ ops->read(dev, res, addr);
+ } else
+ __pci_read_base(dev, pci_bar_unknown, res, addr);
+
+ dev_printk(KERN_DEBUG, &dev->dev,
+ "addon resource %s %pR added\n", res->name, res);
+
+ return addon_res;
+}
+
static void pci_release_dev_addon_res(struct pci_dev *dev)
{
struct pci_dev_addon_resource *addon_res, *tmp;
diff --git a/include/linux/pci.h b/include/linux/pci.h
index 2c8b1a4..faaffe7 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -365,6 +365,11 @@ struct pci_dev_addon_resource {

struct resource *pci_dev_resource_n(struct pci_dev *dev, int n);
int pci_dev_resource_idx(struct pci_dev *dev, struct resource *res);
+struct pci_dev_addon_resource *add_pci_dev_addon_fixed_resource(
+ struct pci_dev *dev, int start, int size, int flags,
+ int addr, char *name);
+struct pci_dev_addon_resource *add_pci_dev_addon_resource(struct pci_dev *dev,
+ int addr, int size, struct resource_ops *ops, char *name);

#define resno_is_for_bridge(n) \
((n) >= PCI_BRIDGE_RESOURCES && (n) <= PCI_BRIDGE_RESOURCE_END)
--
1.7.7


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