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ieee1394: add hpsb_node_read() and hpsb_node_lock()

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These will be used by the firedtv driver.  Like hpsb_node_write() they
are much better APIs for high-level drivers than hpsb_write() and its
siblings --- easier to use correctly and also terser.

Unlike hspb_node_write(), the two new functions will only be used by
one call site.  Hence make them static inline instead of exported
symbols.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
This commit is contained in:
Stefan Richter
2008-08-27 13:40:02 +02:00
parent 29f8ea8ab0
commit b33fdd6ca5
1 changed files with 18 additions and 0 deletions
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18
drivers/ieee1394/nodemgr.h
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@@ -21,9 +21,11 @@
#define _IEEE1394_NODEMGR_H #define _IEEE1394_NODEMGR_H
#include <linux/device.h> #include <linux/device.h>
#include <asm/system.h>
#include <asm/types.h> #include <asm/types.h>
#include "ieee1394_core.h" #include "ieee1394_core.h"
#include "ieee1394_transactions.h"
#include "ieee1394_types.h" #include "ieee1394_types.h"
struct csr1212_csr; struct csr1212_csr;
@@ -154,6 +156,22 @@ static inline int hpsb_node_entry_valid(struct node_entry *ne)
void hpsb_node_fill_packet(struct node_entry *ne, struct hpsb_packet *packet); void hpsb_node_fill_packet(struct node_entry *ne, struct hpsb_packet *packet);
int hpsb_node_write(struct node_entry *ne, u64 addr, int hpsb_node_write(struct node_entry *ne, u64 addr,
quadlet_t *buffer, size_t length); quadlet_t *buffer, size_t length);
static inline int hpsb_node_read(struct node_entry *ne, u64 addr,
quadlet_t *buffer, size_t length)
{
unsigned int g = ne->generation;
smp_rmb();
return hpsb_read(ne->host, ne->nodeid, g, addr, buffer, length);
}
static inline int hpsb_node_lock(struct node_entry *ne, u64 addr, int extcode,
quadlet_t *buffer, quadlet_t arg)
{
unsigned int g = ne->generation;
smp_rmb();
return hpsb_lock(ne->host, ne->nodeid, g, addr, extcode, buffer, arg);
}
int nodemgr_for_each_host(void *data, int (*cb)(struct hpsb_host *, void *)); int nodemgr_for_each_host(void *data, int (*cb)(struct hpsb_host *, void *));
int init_ieee1394_nodemgr(void); int init_ieee1394_nodemgr(void);