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Diffstat (limited to 'target/linux/mvebu/patches-3.10/0004-of-pci-Provide-support-for-parsing-PCI-DT-ranges-pro.patch')
-rw-r--r--target/linux/mvebu/patches-3.10/0004-of-pci-Provide-support-for-parsing-PCI-DT-ranges-pro.patch196
1 files changed, 0 insertions, 196 deletions
diff --git a/target/linux/mvebu/patches-3.10/0004-of-pci-Provide-support-for-parsing-PCI-DT-ranges-pro.patch b/target/linux/mvebu/patches-3.10/0004-of-pci-Provide-support-for-parsing-PCI-DT-ranges-pro.patch
deleted file mode 100644
index 70ccd60682..0000000000
--- a/target/linux/mvebu/patches-3.10/0004-of-pci-Provide-support-for-parsing-PCI-DT-ranges-pro.patch
+++ /dev/null
@@ -1,196 +0,0 @@
-From 7d375772a601bdf227902454705e402fc65b8bdf Mon Sep 17 00:00:00 2001
-From: Andrew Murray <Andrew.Murray@arm.com>
-Date: Tue, 7 May 2013 16:31:12 +0100
-Subject: [PATCH 004/203] of/pci: Provide support for parsing PCI DT ranges
- property
-
-This patch factors out common implementation patterns to reduce overall kernel
-code and provide a means for host bridge drivers to directly obtain struct
-resources from the DT's ranges property without relying on architecture specific
-DT handling. This will make it easier to write archiecture independent host bridge
-drivers and mitigate against further duplication of DT parsing code.
-
-This patch can be used in the following way:
-
- struct of_pci_range_parser parser;
- struct of_pci_range range;
-
- if (of_pci_range_parser_init(&parser, np))
- ; //no ranges property
-
- for_each_of_pci_range(&parser, &range) {
-
- /*
- directly access properties of the address range, e.g.:
- range.pci_space, range.pci_addr, range.cpu_addr,
- range.size, range.flags
-
- alternatively obtain a struct resource, e.g.:
- struct resource res;
- of_pci_range_to_resource(&range, np, &res);
- */
- }
-
-Additionally the implementation takes care of adjacent ranges and merges them
-into a single range (as was the case with powerpc and microblaze).
-
-Signed-off-by: Andrew Murray <Andrew.Murray@arm.com>
-Signed-off-by: Liviu Dudau <Liviu.Dudau@arm.com>
-Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
-Reviewed-by: Rob Herring <rob.herring@calxeda.com>
-Tested-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
-Tested-by: Linus Walleij <linus.walleij@linaro.org>
-Tested-by: Jingoo Han <jg1.han@samsung.com>
-Acked-by: Grant Likely <grant.likely@secretlab.ca>
----
- drivers/of/address.c | 67 ++++++++++++++++++++++++++++++++++++++++++++++
- include/linux/of_address.h | 48 +++++++++++++++++++++++++++++++++
- 2 files changed, 115 insertions(+)
-
---- a/drivers/of/address.c
-+++ b/drivers/of/address.c
-@@ -224,6 +224,73 @@ int of_pci_address_to_resource(struct de
- return __of_address_to_resource(dev, addrp, size, flags, NULL, r);
- }
- EXPORT_SYMBOL_GPL(of_pci_address_to_resource);
-+
-+int of_pci_range_parser_init(struct of_pci_range_parser *parser,
-+ struct device_node *node)
-+{
-+ const int na = 3, ns = 2;
-+ int rlen;
-+
-+ parser->node = node;
-+ parser->pna = of_n_addr_cells(node);
-+ parser->np = parser->pna + na + ns;
-+
-+ parser->range = of_get_property(node, "ranges", &rlen);
-+ if (parser->range == NULL)
-+ return -ENOENT;
-+
-+ parser->end = parser->range + rlen / sizeof(__be32);
-+
-+ return 0;
-+}
-+EXPORT_SYMBOL_GPL(of_pci_range_parser_init);
-+
-+struct of_pci_range *of_pci_range_parser_one(struct of_pci_range_parser *parser,
-+ struct of_pci_range *range)
-+{
-+ const int na = 3, ns = 2;
-+
-+ if (!range)
-+ return NULL;
-+
-+ if (!parser->range || parser->range + parser->np > parser->end)
-+ return NULL;
-+
-+ range->pci_space = parser->range[0];
-+ range->flags = of_bus_pci_get_flags(parser->range);
-+ range->pci_addr = of_read_number(parser->range + 1, ns);
-+ range->cpu_addr = of_translate_address(parser->node,
-+ parser->range + na);
-+ range->size = of_read_number(parser->range + parser->pna + na, ns);
-+
-+ parser->range += parser->np;
-+
-+ /* Now consume following elements while they are contiguous */
-+ while (parser->range + parser->np <= parser->end) {
-+ u32 flags, pci_space;
-+ u64 pci_addr, cpu_addr, size;
-+
-+ pci_space = be32_to_cpup(parser->range);
-+ flags = of_bus_pci_get_flags(parser->range);
-+ pci_addr = of_read_number(parser->range + 1, ns);
-+ cpu_addr = of_translate_address(parser->node,
-+ parser->range + na);
-+ size = of_read_number(parser->range + parser->pna + na, ns);
-+
-+ if (flags != range->flags)
-+ break;
-+ if (pci_addr != range->pci_addr + range->size ||
-+ cpu_addr != range->cpu_addr + range->size)
-+ break;
-+
-+ range->size += size;
-+ parser->range += parser->np;
-+ }
-+
-+ return range;
-+}
-+EXPORT_SYMBOL_GPL(of_pci_range_parser_one);
-+
- #endif /* CONFIG_PCI */
-
- /*
---- a/include/linux/of_address.h
-+++ b/include/linux/of_address.h
-@@ -4,6 +4,36 @@
- #include <linux/errno.h>
- #include <linux/of.h>
-
-+struct of_pci_range_parser {
-+ struct device_node *node;
-+ const __be32 *range;
-+ const __be32 *end;
-+ int np;
-+ int pna;
-+};
-+
-+struct of_pci_range {
-+ u32 pci_space;
-+ u64 pci_addr;
-+ u64 cpu_addr;
-+ u64 size;
-+ u32 flags;
-+};
-+
-+#define for_each_of_pci_range(parser, range) \
-+ for (; of_pci_range_parser_one(parser, range);)
-+
-+static inline void of_pci_range_to_resource(struct of_pci_range *range,
-+ struct device_node *np,
-+ struct resource *res)
-+{
-+ res->flags = range->flags;
-+ res->start = range->cpu_addr;
-+ res->end = range->cpu_addr + range->size - 1;
-+ res->parent = res->child = res->sibling = NULL;
-+ res->name = np->full_name;
-+}
-+
- #ifdef CONFIG_OF_ADDRESS
- extern u64 of_translate_address(struct device_node *np, const __be32 *addr);
- extern bool of_can_translate_address(struct device_node *dev);
-@@ -27,6 +57,11 @@ static inline unsigned long pci_address_
- #define pci_address_to_pio pci_address_to_pio
- #endif
-
-+extern int of_pci_range_parser_init(struct of_pci_range_parser *parser,
-+ struct device_node *node);
-+extern struct of_pci_range *of_pci_range_parser_one(
-+ struct of_pci_range_parser *parser,
-+ struct of_pci_range *range);
- #else /* CONFIG_OF_ADDRESS */
- #ifndef of_address_to_resource
- static inline int of_address_to_resource(struct device_node *dev, int index,
-@@ -53,6 +88,19 @@ static inline const __be32 *of_get_addre
- {
- return NULL;
- }
-+
-+static inline int of_pci_range_parser_init(struct of_pci_range_parser *parser,
-+ struct device_node *node)
-+{
-+ return -1;
-+}
-+
-+static inline struct of_pci_range *of_pci_range_parser_one(
-+ struct of_pci_range_parser *parser,
-+ struct of_pci_range *range)
-+{
-+ return NULL;
-+}
- #endif /* CONFIG_OF_ADDRESS */
-
-
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