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author | Stefan Richter <stefanr@s5r6.in-berlin.de> | 2008-08-27 13:40:02 +0200 |
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committer | Stefan Richter <stefanr@s5r6.in-berlin.de> | 2009-02-24 14:51:27 +0100 |
commit | b33fdd6ca576d6c476c6aebf350d4556294d74ac (patch) | |
tree | ae76d90ae3f103308d408e4a29c540c812b7d44b /drivers/ieee1394 | |
parent | 29f8ea8ab09bad0c3c0d67964559d27643e97903 (diff) | |
download | kernel_samsung_crespo-b33fdd6ca576d6c476c6aebf350d4556294d74ac.zip kernel_samsung_crespo-b33fdd6ca576d6c476c6aebf350d4556294d74ac.tar.gz kernel_samsung_crespo-b33fdd6ca576d6c476c6aebf350d4556294d74ac.tar.bz2 |
ieee1394: add hpsb_node_read() and hpsb_node_lock()
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>
Diffstat (limited to 'drivers/ieee1394')
-rw-r--r-- | drivers/ieee1394/nodemgr.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/ieee1394/nodemgr.h b/drivers/ieee1394/nodemgr.h index 15ea097..ee5acdb 100644 --- a/drivers/ieee1394/nodemgr.h +++ b/drivers/ieee1394/nodemgr.h @@ -21,9 +21,11 @@ #define _IEEE1394_NODEMGR_H #include <linux/device.h> +#include <asm/system.h> #include <asm/types.h> #include "ieee1394_core.h" +#include "ieee1394_transactions.h" #include "ieee1394_types.h" 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); int hpsb_node_write(struct node_entry *ne, u64 addr, 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 init_ieee1394_nodemgr(void); |