wl1271: Added 5 GHz support to join and rx

Added support to assiociate and use connection on 5 GHz band (802.11a).

Signed-off-by: Teemu Paasikivi <ext-teemu.3.paasikivi@nokia.com>
Reviewed-by: Juuso Oikarinen <juuso.oikarinen@nokia.com>
Signed-off-by: Luciano Coelho <luciano.coelho@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 46 insertions, 11 deletions

diff --git a/drivers/net/wireless/wl12xx/wl1271_rx.c b/drivers/net/wireless/wl12xx/wl1271_rx.c
index 66b83e922909..1dd84582ef32 100644
--- a/drivers/net/wireless/wl12xx/wl1271_rx.c
+++ b/drivers/net/wireless/wl12xx/wl1271_rx.c
@@ -70,6 +70,36 @@ static u8 wl1271_rx_rate_to_idx[] = {
         0                           /* WL1271_RATE_1    */
 };
 
+/* The values of this table must match the wl1271_rates[] array */
+static u8 wl1271_5_ghz_rx_rate_to_idx[] = {
+        /* MCS rates are used only with 11n */
+        WL1271_RX_RATE_UNSUPPORTED, /* WL1271_RATE_MCS7 */
+        WL1271_RX_RATE_UNSUPPORTED, /* WL1271_RATE_MCS6 */
+        WL1271_RX_RATE_UNSUPPORTED, /* WL1271_RATE_MCS5 */
+        WL1271_RX_RATE_UNSUPPORTED, /* WL1271_RATE_MCS4 */
+        WL1271_RX_RATE_UNSUPPORTED, /* WL1271_RATE_MCS3 */
+        WL1271_RX_RATE_UNSUPPORTED, /* WL1271_RATE_MCS2 */
+        WL1271_RX_RATE_UNSUPPORTED, /* WL1271_RATE_MCS1 */
+        WL1271_RX_RATE_UNSUPPORTED, /* WL1271_RATE_MCS0 */
+
+        7,                          /* WL1271_RATE_54   */
+        6,                          /* WL1271_RATE_48   */
+        5,                          /* WL1271_RATE_36   */
+        4,                          /* WL1271_RATE_24   */
+
+        /* TI-specific rate */
+        WL1271_RX_RATE_UNSUPPORTED, /* WL1271_RATE_22   */
+
+        3,                          /* WL1271_RATE_18   */
+        2,                          /* WL1271_RATE_12   */
+        WL1271_RX_RATE_UNSUPPORTED, /* WL1271_RATE_11   */
+        1,                          /* WL1271_RATE_9    */
+        0,                          /* WL1271_RATE_6    */
+        WL1271_RX_RATE_UNSUPPORTED, /* WL1271_RATE_5_5  */
+        WL1271_RX_RATE_UNSUPPORTED, /* WL1271_RATE_2    */
+        WL1271_RX_RATE_UNSUPPORTED  /* WL1271_RATE_1    */
+};
+
 static void wl1271_rx_status(struct wl1271 *wl,
                              struct wl1271_rx_descriptor *desc,
                              struct ieee80211_rx_status *status,
@@ -77,15 +107,21 @@ static void wl1271_rx_status(struct wl1271 *wl,
 {
         memset(status, 0, sizeof(struct ieee80211_rx_status));
 
-        if ((desc->flags & WL1271_RX_DESC_BAND_MASK) == WL1271_RX_DESC_BAND_BG)
+        if ((desc->flags & WL1271_RX_DESC_BAND_MASK) ==
+            WL1271_RX_DESC_BAND_BG) {
                 status->band = IEEE80211_BAND_2GHZ;
-        else if ((desc->flags & WL1271_RX_DESC_BAND_MASK) ==
-                 WL1271_RX_DESC_BAND_A)
+                status->rate_idx = wl1271_rx_rate_to_idx[desc->rate];
+        } else if ((desc->flags & WL1271_RX_DESC_BAND_MASK) ==
+                 WL1271_RX_DESC_BAND_A) {
                 status->band = IEEE80211_BAND_5GHZ;
-        else
+                status->rate_idx = wl1271_5_ghz_rx_rate_to_idx[desc->rate];
+        } else
                 wl1271_warning("unsupported band 0x%x",
                                desc->flags & WL1271_RX_DESC_BAND_MASK);
 
+        if (unlikely(status->rate_idx == WL1271_RX_RATE_UNSUPPORTED))
+                wl1271_warning("unsupported rate");
+
         /*
          * FIXME: Add mactime handling.  For IBSS (ad-hoc) we need to get the
          * timestamp from the beacon (acx_tsf_info).  In BSS mode (infra) we
@@ -108,15 +144,14 @@ static void wl1271_rx_status(struct wl1271 *wl,
 
                 if (likely(!(desc->flags & WL1271_RX_DESC_DECRYPT_FAIL)))
                         status->flag |= RX_FLAG_DECRYPTED;
-
+                /* FIXME: Flag should be also set when using 5 GHz band.
+                 * At the moment chip reports MIC failed on all packets,
+                 * so flag is silently discarded.
+                 */
                 if (unlikely(desc->flags & WL1271_RX_DESC_MIC_FAIL))
-                        status->flag |= RX_FLAG_MMIC_ERROR;
+                        if (status->band != IEEE80211_BAND_5GHZ)
+                                status->flag |= RX_FLAG_MMIC_ERROR;
         }
-
-        status->rate_idx = wl1271_rx_rate_to_idx[desc->rate];
-
-        if (status->rate_idx == WL1271_RX_RATE_UNSUPPORTED)
-                wl1271_warning("unsupported rate");
 }
 
 static void wl1271_rx_handle_data(struct wl1271 *wl, u32 length)