brcmfmac: add flow-control mode to firmware signalling
Upcoming patches will add firmware signalled flow control. Prepare
by adding the mode, which defaults to disable it. The mode can be
queried by brcmf_fws_fc_active() and set by a module parameter.
Reviewed-by: Hante Meuleman <meuleman@broadcom.com>
Reviewed-by: Piotr Haber <phaber@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/brcm80211/brcmfmac/fwsignal.c b/drivers/net/wireless/brcm80211/brcmfmac/fwsignal.c
index 2afd850..cb1414d 100644
--- a/drivers/net/wireless/brcm80211/brcmfmac/fwsignal.c
+++ b/drivers/net/wireless/brcm80211/brcmfmac/fwsignal.c
@@ -14,6 +14,7 @@
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <linux/types.h>
+#include <linux/module.h>
#include <linux/if_ether.h>
#include <linux/spinlock.h>
#include <linux/skbuff.h>
@@ -124,10 +125,6 @@
#define BRCMF_FWS_STATE_OPEN 1
#define BRCMF_FWS_STATE_CLOSE 2
-#define BRCMF_FWS_FCMODE_NONE 0
-#define BRCMF_FWS_FCMODE_IMPLIED_CREDIT 1
-#define BRCMF_FWS_FCMODE_EXPLICIT_CREDIT 2
-
#define BRCMF_FWS_MAC_DESC_TABLE_SIZE 32
#define BRCMF_FWS_MAX_IFNUM 16
#define BRCMF_FWS_MAC_DESC_ID_INVALID 0xff
@@ -245,6 +242,12 @@
BRCMF_SKB_HTOD_TAG_ ## field ## _MASK, \
BRCMF_SKB_HTOD_TAG_ ## field ## _SHIFT)
+enum brcmf_fws_fcmode {
+ BRCMF_FWS_FCMODE_NONE,
+ BRCMF_FWS_FCMODE_IMPLIED_CREDIT,
+ BRCMF_FWS_FCMODE_EXPLICIT_CREDIT
+};
+
/**
* struct brcmf_fws_mac_descriptor - firmware signalling data per node/interface
*
@@ -328,9 +331,14 @@
struct brcmf_fws_hanger hanger;
struct brcmf_fws_mac_descriptor nodes[BRCMF_FWS_MAC_DESC_TABLE_SIZE];
struct brcmf_fws_mac_descriptor other;
+ enum brcmf_fws_fcmode fcmode;
int fifo_credit[NL80211_NUM_ACS+1+1];
};
+static int fcmode;
+module_param(fcmode, int, S_IRUSR);
+MODULE_PARM_DESC(fcmode, "mode of firmware signalled flow control");
+
/**
* brcmf_fws_get_tlv_len() - returns defined length for given tlv id.
*/
@@ -745,6 +753,7 @@
/* set linkage back */
drvr->fws->drvr = drvr;
+ drvr->fws->fcmode = fcmode;
/* TODO: remove upon feature delivery */
brcmf_err("%s bdcv2 tlv signaling [%x]\n",
@@ -920,3 +929,12 @@
brcmf_fws_cleanup(ifp->drvr->fws, ifp->ifidx);
kfree(entry);
}
+
+bool brcmf_fws_fc_active(struct brcmf_fws_info *fws)
+{
+ if (!fws)
+ return false;
+
+ brcmf_dbg(TRACE, "enter: mode=%d\n", fws->fcmode);
+ return fws->fcmode != BRCMF_FWS_FCMODE_NONE;
+}