From 9fe929aaace6a3019dd64a70063cc7b0bb956a4e Mon Sep 17 00:00:00 2001
From: Arend van Spriel <arend@broadcom.com>
Date: Fri, 21 Apr 2017 13:05:04 +0100
Subject: [PATCH] brcmfmac: add firmware feature detection for gscan feature
Git-commit: 9fe929aaace6a3019dd64a70063cc7b0bb956a4e
Patch-mainline: v4.13-rc1
References: FATE#326294
Detect gscan support in firmware by doing pfn_gscan_cfg iovar with
invalid version.
Reviewed-by: Hante Meuleman <hante.meuleman@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieter-paul.giesberts@broadcom.com>
Reviewed-by: Franky Lin <franky.lin@broadcom.com>
Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
.../broadcom/brcm80211/brcmfmac/feature.c | 22 ++++++-
.../broadcom/brcm80211/brcmfmac/feature.h | 4 +-
.../broadcom/brcm80211/brcmfmac/fwil_types.h | 59 +++++++++++++++++++
3 files changed, 83 insertions(+), 2 deletions(-)
diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/feature.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/feature.c
index 62985f2c0853..8c7ef59944f0 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/feature.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/feature.c
@@ -27,6 +27,7 @@
#include "feature.h"
#include "common.h"
+#define BRCMF_FW_UNSUPPORTED 23
/*
* expand feature list to array of feature strings.
@@ -113,6 +114,22 @@ static void brcmf_feat_iovar_int_get(struct brcmf_if *ifp,
}
}
+static void brcmf_feat_iovar_data_set(struct brcmf_if *ifp,
+ enum brcmf_feat_id id, char *name,
+ const void *data, size_t len)
+{
+ int err;
+
+ err = brcmf_fil_iovar_data_set(ifp, name, data, len);
+ if (err != -BRCMF_FW_UNSUPPORTED) {
+ brcmf_dbg(INFO, "enabling feature: %s\n", brcmf_feat_names[id]);
+ ifp->drvr->feat_flags |= BIT(id);
+ } else {
+ brcmf_dbg(TRACE, "%s feature check failed: %d\n",
+ brcmf_feat_names[id], err);
+ }
+}
+
static void brcmf_feat_firmware_capabilities(struct brcmf_if *ifp)
{
char caps[256];
@@ -136,11 +153,14 @@ void brcmf_feat_attach(struct brcmf_pub *drvr)
{
struct brcmf_if *ifp = brcmf_get_ifp(drvr, 0);
struct brcmf_pno_macaddr_le pfn_mac;
+ struct brcmf_gscan_config gscan_cfg;
u32 wowl_cap;
s32 err;
brcmf_feat_firmware_capabilities(ifp);
-
+ memset(&gscan_cfg, 0, sizeof(gscan_cfg));
+ brcmf_feat_iovar_data_set(ifp, BRCMF_FEAT_GSCAN, "pfn_gscan_cfg",
+ &gscan_cfg, sizeof(gscan_cfg));
brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_PNO, "pfn");
if (drvr->bus_if->wowl_supported)
brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_WOWL, "wowl");
diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/feature.h b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/feature.h
index db4733a95e28..c1dbd17506aa 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/feature.h
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/feature.h
@@ -31,6 +31,7 @@
* WOWL_GTK: (WOWL) GTK rekeying offload
* WOWL_ARP_ND: ARP and Neighbor Discovery offload support during WOWL.
* MFP: 802.11w Management Frame Protection.
+ * GSCAN: enhanced scan offload feature.
*/
#define BRCMF_FEAT_LIST \
BRCMF_FEAT_DEF(MBSS) \
@@ -44,7 +45,8 @@
BRCMF_FEAT_DEF(WOWL_ND) \
BRCMF_FEAT_DEF(WOWL_GTK) \
BRCMF_FEAT_DEF(WOWL_ARP_ND) \
- BRCMF_FEAT_DEF(MFP)
+ BRCMF_FEAT_DEF(MFP) \
+ BRCMF_FEAT_DEF(GSCAN)
/*
* Quirks:
diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwil_types.h b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwil_types.h
index 9a1eb5ab6c4b..8c18fad3edc9 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwil_types.h
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwil_types.h
@@ -835,4 +835,63 @@ struct brcmf_gtk_keyinfo_le {
u8 replay_counter[BRCMF_RSN_REPLAY_LEN];
};
+/**
+ * struct brcmf_gscan_bucket_config - configuration data for channel bucket.
+ *
+ * @bucket_end_index: !unknown!
+ * @bucket_freq_multiple: !unknown!
+ * @flag: !unknown!
+ * @reserved: !unknown!
+ * @repeat: !unknown!
+ * @max_freq_multiple: !unknown!
+ */
+struct brcmf_gscan_bucket_config {
+ u8 bucket_end_index;
+ u8 bucket_freq_multiple;
+ u8 flag;
+ u8 reserved;
+ __le16 repeat;
+ __le16 max_freq_multiple;
+};
+
+/* version supported which must match firmware */
+#define BRCMF_GSCAN_CFG_VERSION 1
+
+/**
+ * enum brcmf_gscan_cfg_flags - bit values for gscan flags.
+ *
+ * @BRCMF_GSCAN_CFG_FLAGS_ALL_RESULTS: send probe responses/beacons to host.
+ * @BRCMF_GSCAN_CFG_FLAGS_CHANGE_ONLY: indicated only flags member is changed.
+ */
+enum brcmf_gscan_cfg_flags {
+ BRCMF_GSCAN_CFG_FLAGS_ALL_RESULTS = BIT(0),
+ BRCMF_GSCAN_CFG_FLAGS_CHANGE_ONLY = BIT(7),
+};
+
+/**
+ * struct brcmf_gscan_config - configuration data for gscan.
+ *
+ * @version: version of the api to match firmware.
+ * @flags: flags according %enum brcmf_gscan_cfg_flags.
+ * @buffer_threshold: percentage threshold of buffer to generate an event.
+ * @swc_nbssid_threshold: number of BSSIDs with significant change that
+ * will generate an event.
+ * @swc_rssi_window_size: size of rssi cache buffer (max=8).
+ * @count_of_channel_buckets: number of array members in @bucket.
+ * @retry_threshold: !unknown!
+ * @lost_ap_window: !unknown!
+ * @bucket: array of channel buckets.
+ */
+struct brcmf_gscan_config {
+ __le16 version;
+ u8 flags;
+ u8 buffer_threshold;
+ u8 swc_nbssid_threshold;
+ u8 swc_rssi_window_size;
+ u8 count_of_channel_buckets;
+ u8 retry_threshold;
+ __le16 lost_ap_window;
+ struct brcmf_gscan_bucket_config bucket[1];
+};
+
#endif /* FWIL_TYPES_H_ */
--
2.19.2