b43: support new TX header, noticed to be used by 598.314+ fw

Signed-off-by: NRafał Miłecki <zajec5@gmail.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

drivers/net/wireless/b43/b43.h

@@ -695,6 +695,7 @@ struct b43_firmware_file {
 };
 
 enum b43_firmware_hdr_format {
+	B43_FW_HDR_598,
 	B43_FW_HDR_410,
 	B43_FW_HDR_351,
 };
@@ -883,7 +884,7 @@ struct b43_wl {
 	struct b43_leds leds;
 
 	/* Kmalloc'ed scratch space for PIO TX/RX. Protected by wl->mutex. */
-	u8 pio_scratchspace[110] __attribute__((__aligned__(8)));
+	u8 pio_scratchspace[118] __attribute__((__aligned__(8)));
 	u8 pio_tailspace[4] __attribute__((__aligned__(8)));
 };
 

drivers/net/wireless/b43/main.c

@@ -2514,7 +2514,9 @@ static int b43_upload_microcode(struct b43_wldev *dev)
 	}
 	dev->fw.rev = fwrev;
 	dev->fw.patch = fwpatch;
-	if (dev->fw.rev >= 410)
+	if (dev->fw.rev >= 598)
+		dev->fw.hdr_format = B43_FW_HDR_598;
+	else if (dev->fw.rev >= 410)
 		dev->fw.hdr_format = B43_FW_HDR_410;
 	else
 		dev->fw.hdr_format = B43_FW_HDR_351;

drivers/net/wireless/b43/xmit.c

@@ -338,6 +338,10 @@ int b43_generate_txhdr(struct b43_wldev *dev,
 		}
 	}
 	switch (dev->fw.hdr_format) {
+	case B43_FW_HDR_598:
+		b43_generate_plcp_hdr((struct b43_plcp_hdr4 *)(&txhdr->format_598.plcp),
+				      plcp_fragment_len, rate);
+		break;
 	case B43_FW_HDR_351:
 		b43_generate_plcp_hdr((struct b43_plcp_hdr4 *)(&txhdr->format_351.plcp),
 				      plcp_fragment_len, rate);
@@ -435,6 +439,10 @@ int b43_generate_txhdr(struct b43_wldev *dev,
 			struct ieee80211_cts *uninitialized_var(cts);
 
 			switch (dev->fw.hdr_format) {
+			case B43_FW_HDR_598:
+				cts = (struct ieee80211_cts *)
+					(txhdr->format_598.rts_frame);
+				break;
 			case B43_FW_HDR_351:
 				cts = (struct ieee80211_cts *)
 					(txhdr->format_351.rts_frame);
@@ -453,6 +461,10 @@ int b43_generate_txhdr(struct b43_wldev *dev,
 			struct ieee80211_rts *uninitialized_var(rts);
 
 			switch (dev->fw.hdr_format) {
+			case B43_FW_HDR_598:
+				rts = (struct ieee80211_rts *)
+					(txhdr->format_598.rts_frame);
+				break;
 			case B43_FW_HDR_351:
 				rts = (struct ieee80211_rts *)
 					(txhdr->format_351.rts_frame);
@@ -472,6 +484,9 @@ int b43_generate_txhdr(struct b43_wldev *dev,
 
 		/* Generate the PLCP headers for the RTS/CTS frame */
 		switch (dev->fw.hdr_format) {
+		case B43_FW_HDR_598:
+			plcp = &txhdr->format_598.rts_plcp;
+			break;
 		case B43_FW_HDR_351:
 			plcp = &txhdr->format_351.rts_plcp;
 			break;
@@ -486,6 +501,10 @@ int b43_generate_txhdr(struct b43_wldev *dev,
 				      len, rts_rate_fb);
 
 		switch (dev->fw.hdr_format) {
+		case B43_FW_HDR_598:
+			hdr = (struct ieee80211_hdr *)
+				(&txhdr->format_598.rts_frame);
+			break;
 		case B43_FW_HDR_351:
 			hdr = (struct ieee80211_hdr *)
 				(&txhdr->format_351.rts_frame);
@@ -522,6 +541,9 @@ int b43_generate_txhdr(struct b43_wldev *dev,
 
 	/* Magic cookie */
 	switch (dev->fw.hdr_format) {
+	case B43_FW_HDR_598:
+		txhdr->format_598.cookie = cpu_to_le16(cookie);
+		break;
 	case B43_FW_HDR_351:
 		txhdr->format_351.cookie = cpu_to_le16(cookie);
 		break;

drivers/net/wireless/b43/xmit.h

@@ -46,6 +46,23 @@ struct b43_txhdr {
 	__le32 timeout;			/* Timeout */
 
 	union {
+		/* Tested with 598.314, 644.1001 and 666.2 */
+		struct {
+			__le16 mimo_antenna;            /* MIMO antenna select */
+			__le16 preload_size;            /* Preload size */
+			PAD_BYTES(2);
+			__le16 cookie;                  /* TX frame cookie */
+			__le16 tx_status;               /* TX status */
+			__le16 max_n_mpdus;
+			__le16 max_a_bytes_mrt;
+			__le16 max_a_bytes_fbr;
+			__le16 min_m_bytes;
+			struct b43_plcp_hdr6 rts_plcp;  /* RTS PLCP header */
+			__u8 rts_frame[16];             /* The RTS frame (if used) */
+			PAD_BYTES(2);
+			struct b43_plcp_hdr6 plcp;      /* Main PLCP header */
+		} format_598 __packed;
+
 		/* Tested with 410.2160, 478.104 and 508.* */
 		struct {
 			__le16 mimo_antenna;		/* MIMO antenna select */
@@ -170,6 +187,8 @@ static inline
 size_t b43_txhdr_size(struct b43_wldev *dev)
 {
 	switch (dev->fw.hdr_format) {
+	case B43_FW_HDR_598:
+		return 112 + sizeof(struct b43_plcp_hdr6);
 	case B43_FW_HDR_410:
 		return 104 + sizeof(struct b43_plcp_hdr6);
 	case B43_FW_HDR_351: