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authorHolger Schurig <hs4233@mail.mn-solutions.de>2008-04-01 16:50:43 +0400
committerJohn W. Linville <linville@tuxdriver.com>2008-04-16 23:59:56 +0400
commit7919b89c8276d657976d4d4d6b7cb58ea1aa08c3 (patch)
tree31fc24e2f8b7d8eeee67347333e078591796d4b7 /drivers/net/wireless/libertas/defs.h
parent98dd6a575928ed9c42130d208e6bfb0f7a914d5a (diff)
downloadlinux-7919b89c8276d657976d4d4d6b7cb58ea1aa08c3.tar.xz
libertas: convert libertas driver to use an event/cmdresp queue
This patch (co-developed by Dan Williams and Holger Schurig) uses a kfifo object for events and a swapping buffer scheme for the command response to preserve the zero-copy semantics of the CF driver and keep memory usage low. The main thread should only ever touch the buffer indexed by priv->resp_idx, while the interface code is free to write to the second buffer, then swap priv->resp_idx under the driver spinlock. The firmware specs only permit one in-flight command, so there will only ever be one command response to process at a time. Signed-off-by: Holger Schurig <hs4233@mail.mn-solutions.de> Signed-off-by: Dan Williams <dcbw@redhat.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/libertas/defs.h')
-rw-r--r--drivers/net/wireless/libertas/defs.h2
1 files changed, 0 insertions, 2 deletions
diff --git a/drivers/net/wireless/libertas/defs.h b/drivers/net/wireless/libertas/defs.h
index 84e8de5e21da..d39520111062 100644
--- a/drivers/net/wireless/libertas/defs.h
+++ b/drivers/net/wireless/libertas/defs.h
@@ -177,8 +177,6 @@ static inline void lbs_deb_hex(unsigned int grp, const char *prompt, u8 *buf, in
#define MRVDRV_CMD_UPLD_RDY 0x0008
#define MRVDRV_CARDEVENT 0x0010
-#define SBI_EVENT_CAUSE_SHIFT 3
-
/** TxPD status */
/* Station firmware use TxPD status field to report final Tx transmit