These changes are the raw update to linux-4.4.6-rt14. Kernel sources

[kvmfornfv.git] / kernel / drivers / net / wireless / mediatek / mt7601u / dma.h

diff --git a/kernel/drivers/net/wireless/mediatek/mt7601u/dma.h b/kernel/drivers/net/wireless/mediatek/mt7601u/dma.h
new file mode 100644 (file)
index 0000000..978e8a9
--- /dev/null
+++ b/kernel/drivers/net/wireless/mediatek/mt7601u/dma.h
@@ -0,0 +1,127 @@
+/*
+ * Copyright (C) 2014 Felix Fietkau <nbd@openwrt.org>
+ * Copyright (C) 2015 Jakub Kicinski <kubakici@wp.pl>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef __MT7601U_DMA_H
+#define __MT7601U_DMA_H
+
+#include <asm/unaligned.h>
+#include <linux/skbuff.h>
+
+#include "util.h"
+
+#define MT_DMA_HDR_LEN                 4
+#define MT_RX_INFO_LEN                 4
+#define MT_FCE_INFO_LEN                        4
+#define MT_DMA_HDRS                    (MT_DMA_HDR_LEN + MT_RX_INFO_LEN)
+
+/* Common Tx DMA descriptor fields */
+#define MT_TXD_INFO_LEN                        GENMASK(15, 0)
+#define MT_TXD_INFO_D_PORT             GENMASK(29, 27)
+#define MT_TXD_INFO_TYPE               GENMASK(31, 30)
+
+enum mt76_msg_port {
+       WLAN_PORT,
+       CPU_RX_PORT,
+       CPU_TX_PORT,
+       HOST_PORT,
+       VIRTUAL_CPU_RX_PORT,
+       VIRTUAL_CPU_TX_PORT,
+       DISCARD,
+};
+
+enum mt76_info_type {
+       DMA_PACKET,
+       DMA_COMMAND,
+};
+
+/* Tx DMA packet specific flags */
+#define MT_TXD_PKT_INFO_NEXT_VLD       BIT(16)
+#define MT_TXD_PKT_INFO_TX_BURST       BIT(17)
+#define MT_TXD_PKT_INFO_80211          BIT(19)
+#define MT_TXD_PKT_INFO_TSO            BIT(20)
+#define MT_TXD_PKT_INFO_CSO            BIT(21)
+#define MT_TXD_PKT_INFO_WIV            BIT(24)
+#define MT_TXD_PKT_INFO_QSEL           GENMASK(26, 25)
+
+enum mt76_qsel {
+       MT_QSEL_MGMT,
+       MT_QSEL_HCCA,
+       MT_QSEL_EDCA,
+       MT_QSEL_EDCA_2,
+};
+
+/* Tx DMA MCU command specific flags */
+#define MT_TXD_CMD_INFO_SEQ            GENMASK(19, 16)
+#define MT_TXD_CMD_INFO_TYPE           GENMASK(26, 20)
+
+static inline int mt7601u_dma_skb_wrap(struct sk_buff *skb,
+                                      enum mt76_msg_port d_port,
+                                      enum mt76_info_type type, u32 flags)
+{
+       u32 info;
+
+       /* Buffer layout:
+        *      |   4B   | xfer len |      pad       |  4B  |
+        *      | TXINFO | pkt/cmd  | zero pad to 4B | zero |
+        *
+        * length field of TXINFO should be set to 'xfer len'.
+        */
+
+       info = flags |
+               MT76_SET(MT_TXD_INFO_LEN, round_up(skb->len, 4)) |
+               MT76_SET(MT_TXD_INFO_D_PORT, d_port) |
+               MT76_SET(MT_TXD_INFO_TYPE, type);
+
+       put_unaligned_le32(info, skb_push(skb, sizeof(info)));
+       return skb_put_padto(skb, round_up(skb->len, 4) + 4);
+}
+
+static inline int
+mt7601u_dma_skb_wrap_pkt(struct sk_buff *skb, enum mt76_qsel qsel, u32 flags)
+{
+       flags |= MT76_SET(MT_TXD_PKT_INFO_QSEL, qsel);
+       return mt7601u_dma_skb_wrap(skb, WLAN_PORT, DMA_PACKET, flags);
+}
+
+/* Common Rx DMA descriptor fields */
+#define MT_RXD_INFO_LEN                        GENMASK(13, 0)
+#define MT_RXD_INFO_PCIE_INTR          BIT(24)
+#define MT_RXD_INFO_QSEL               GENMASK(26, 25)
+#define MT_RXD_INFO_PORT               GENMASK(29, 27)
+#define MT_RXD_INFO_TYPE               GENMASK(31, 30)
+
+/* Rx DMA packet specific flags */
+#define MT_RXD_PKT_INFO_UDP_ERR                BIT(16)
+#define MT_RXD_PKT_INFO_TCP_ERR                BIT(17)
+#define MT_RXD_PKT_INFO_IP_ERR         BIT(18)
+#define MT_RXD_PKT_INFO_PKT_80211      BIT(19)
+#define MT_RXD_PKT_INFO_L3L4_DONE      BIT(20)
+#define MT_RXD_PKT_INFO_MAC_LEN                GENMASK(23, 21)
+
+/* Rx DMA MCU command specific flags */
+#define MT_RXD_CMD_INFO_SELF_GEN       BIT(15)
+#define MT_RXD_CMD_INFO_CMD_SEQ                GENMASK(19, 16)
+#define MT_RXD_CMD_INFO_EVT_TYPE       GENMASK(23, 20)
+
+enum mt76_evt_type {
+       CMD_DONE,
+       CMD_ERROR,
+       CMD_RETRY,
+       EVENT_PWR_RSP,
+       EVENT_WOW_RSP,
+       EVENT_CARRIER_DETECT_RSP,
+       EVENT_DFS_DETECT_RSP,
+};
+
+#endif