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authorAndres Salomon <dilinger@queued.net>2010-10-10 21:49:45 -0600
committerGrant Likely <grant.likely@secretlab.ca>2010-10-12 21:57:53 -0600
commitf90c34bd658d240cb5ebc5fe0a17796e590c6ec8 (patch)
tree02e8243910e156d3af4a14bd9be63dd829d07576 /include/linux/of_pdt.h
parent3cfc535c5df8122af1258ae05aaf2770c033425d (diff)
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op-kernel-dev-f90c34bd658d240cb5ebc5fe0a17796e590c6ec8.tar.gz
of/promtree: no longer call prom_ functions directly; use an ops structure
Rather than assuming an architecture defines prom_getchild and friends, define an ops struct with hooks for the various prom functions that pdt.c needs. This ops struct is filled in by the arch-(and sometimes firmware-)specific code, and passed to of_pdt_build_devicetree. Update sparc code to define the ops struct as well. Signed-off-by: Andres Salomon <dilinger@queued.net> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Diffstat (limited to 'include/linux/of_pdt.h')
-rw-r--r--include/linux/of_pdt.h20
1 files changed, 19 insertions, 1 deletions
diff --git a/include/linux/of_pdt.h b/include/linux/of_pdt.h
index c0a8774..303c5ff 100644
--- a/include/linux/of_pdt.h
+++ b/include/linux/of_pdt.h
@@ -13,10 +13,28 @@
#ifndef _LINUX_OF_PDT_H
#define _LINUX_OF_PDT_H
+/* overridable operations for calling into the PROM */
+struct of_pdt_ops {
+ /*
+ * buf should be 32 bytes; return 0 on success.
+ * If prev is NULL, the first property will be returned.
+ */
+ int (*nextprop)(phandle node, char *prev, char *buf);
+
+ /* for both functions, return proplen on success; -1 on error */
+ int (*getproplen)(phandle node, const char *prop);
+ int (*getproperty)(phandle node, const char *prop, char *buf,
+ int bufsize);
+
+ /* phandles are 0 if no child or sibling exists */
+ phandle (*getchild)(phandle parent);
+ phandle (*getsibling)(phandle node);
+};
+
extern void *prom_early_alloc(unsigned long size);
/* for building the device tree */
-extern void of_pdt_build_devicetree(phandle root_node);
+extern void of_pdt_build_devicetree(phandle root_node, struct of_pdt_ops *ops);
extern void (*prom_build_more)(struct device_node *dp,
struct device_node ***nextp);
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