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1/* SPDX-License-Identifier: GPL-2.0-only */2/*3 * Copyright (C) 2014 Felix Fietkau <nbd@openwrt.org>4 * Copyright (C) 2015 Jakub Kicinski <kubakici@wp.pl>5 */6 7#ifndef __MT7601U_DMA_H8#define __MT7601U_DMA_H9 10#include <linux/unaligned.h>11#include <linux/skbuff.h>12 13#define MT_DMA_HDR_LEN 414#define MT_RX_INFO_LEN 415#define MT_FCE_INFO_LEN 416#define MT_DMA_HDRS (MT_DMA_HDR_LEN + MT_RX_INFO_LEN)17 18/* Common Tx DMA descriptor fields */19#define MT_TXD_INFO_LEN GENMASK(15, 0)20#define MT_TXD_INFO_D_PORT GENMASK(29, 27)21#define MT_TXD_INFO_TYPE GENMASK(31, 30)22 23enum mt76_msg_port {24 WLAN_PORT,25 CPU_RX_PORT,26 CPU_TX_PORT,27 HOST_PORT,28 VIRTUAL_CPU_RX_PORT,29 VIRTUAL_CPU_TX_PORT,30 DISCARD,31};32 33enum mt76_info_type {34 DMA_PACKET,35 DMA_COMMAND,36};37 38/* Tx DMA packet specific flags */39#define MT_TXD_PKT_INFO_NEXT_VLD BIT(16)40#define MT_TXD_PKT_INFO_TX_BURST BIT(17)41#define MT_TXD_PKT_INFO_80211 BIT(19)42#define MT_TXD_PKT_INFO_TSO BIT(20)43#define MT_TXD_PKT_INFO_CSO BIT(21)44#define MT_TXD_PKT_INFO_WIV BIT(24)45#define MT_TXD_PKT_INFO_QSEL GENMASK(26, 25)46 47enum mt76_qsel {48 MT_QSEL_MGMT,49 MT_QSEL_HCCA,50 MT_QSEL_EDCA,51 MT_QSEL_EDCA_2,52};53 54/* Tx DMA MCU command specific flags */55#define MT_TXD_CMD_INFO_SEQ GENMASK(19, 16)56#define MT_TXD_CMD_INFO_TYPE GENMASK(26, 20)57 58static inline int mt7601u_dma_skb_wrap(struct sk_buff *skb,59 enum mt76_msg_port d_port,60 enum mt76_info_type type, u32 flags)61{62 u32 info;63 64 /* Buffer layout:65 * | 4B | xfer len | pad | 4B |66 * | TXINFO | pkt/cmd | zero pad to 4B | zero |67 *68 * length field of TXINFO should be set to 'xfer len'.69 */70 71 info = flags |72 FIELD_PREP(MT_TXD_INFO_LEN, round_up(skb->len, 4)) |73 FIELD_PREP(MT_TXD_INFO_D_PORT, d_port) |74 FIELD_PREP(MT_TXD_INFO_TYPE, type);75 76 put_unaligned_le32(info, skb_push(skb, sizeof(info)));77 return skb_put_padto(skb, round_up(skb->len, 4) + 4);78}79 80static inline int81mt7601u_dma_skb_wrap_pkt(struct sk_buff *skb, enum mt76_qsel qsel, u32 flags)82{83 flags |= FIELD_PREP(MT_TXD_PKT_INFO_QSEL, qsel);84 return mt7601u_dma_skb_wrap(skb, WLAN_PORT, DMA_PACKET, flags);85}86 87/* Common Rx DMA descriptor fields */88#define MT_RXD_INFO_LEN GENMASK(13, 0)89#define MT_RXD_INFO_PCIE_INTR BIT(24)90#define MT_RXD_INFO_QSEL GENMASK(26, 25)91#define MT_RXD_INFO_PORT GENMASK(29, 27)92#define MT_RXD_INFO_TYPE GENMASK(31, 30)93 94/* Rx DMA packet specific flags */95#define MT_RXD_PKT_INFO_UDP_ERR BIT(16)96#define MT_RXD_PKT_INFO_TCP_ERR BIT(17)97#define MT_RXD_PKT_INFO_IP_ERR BIT(18)98#define MT_RXD_PKT_INFO_PKT_80211 BIT(19)99#define MT_RXD_PKT_INFO_L3L4_DONE BIT(20)100#define MT_RXD_PKT_INFO_MAC_LEN GENMASK(23, 21)101 102/* Rx DMA MCU command specific flags */103#define MT_RXD_CMD_INFO_SELF_GEN BIT(15)104#define MT_RXD_CMD_INFO_CMD_SEQ GENMASK(19, 16)105#define MT_RXD_CMD_INFO_EVT_TYPE GENMASK(23, 20)106 107enum mt76_evt_type {108 CMD_DONE,109 CMD_ERROR,110 CMD_RETRY,111 EVENT_PWR_RSP,112 EVENT_WOW_RSP,113 EVENT_CARRIER_DETECT_RSP,114 EVENT_DFS_DETECT_RSP,115};116 117#endif118