projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| c869f77d JK |
1 | /* |
| 2 | * Copyright (C) 2014 Felix Fietkau <nbd@openwrt.org> | |
| 3 | * Copyright (C) 2015 Jakub Kicinski <kubakici@wp.pl> | |
| 4 | * | |
| 5 | * This program is free software; you can redistribute it and/or modify | |
| 6 | * it under the terms of the GNU General Public License version 2 | |
| 7 | * as published by the Free Software Foundation | |
| 8 | * | |
| 9 | * This program is distributed in the hope that it will be useful, | |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 12 | * GNU General Public License for more details. | |
| 13 | */ | |
| 14 | ||
| 15 | #ifndef __MT7601U_DMA_H | |
| 16 | #define __MT7601U_DMA_H | |
| 17 | ||
| 18 | #include <asm/unaligned.h> | |
| 19 | #include <linux/skbuff.h> | |
| 20 | ||
| c869f77d JK |
21 | #define MT_DMA_HDR_LEN 4 |
| 22 | #define MT_RX_INFO_LEN 4 | |
| 23 | #define MT_FCE_INFO_LEN 4 | |
| 24 | #define MT_DMA_HDRS (MT_DMA_HDR_LEN + MT_RX_INFO_LEN) | |
| 25 | ||
| 26 | /* Common Tx DMA descriptor fields */ | |
| 27 | #define MT_TXD_INFO_LEN GENMASK(15, 0) | |
| 28 | #define MT_TXD_INFO_D_PORT GENMASK(29, 27) | |
| 29 | #define MT_TXD_INFO_TYPE GENMASK(31, 30) | |
| 30 | ||
| 31 | enum mt76_msg_port { | |
| 32 | WLAN_PORT, | |
| 33 | CPU_RX_PORT, | |
| 34 | CPU_TX_PORT, | |
| 35 | HOST_PORT, | |
| 36 | VIRTUAL_CPU_RX_PORT, | |
| 37 | VIRTUAL_CPU_TX_PORT, | |
| 38 | DISCARD, | |
| 39 | }; | |
| 40 | ||
| 41 | enum mt76_info_type { | |
| 42 | DMA_PACKET, | |
| 43 | DMA_COMMAND, | |
| 44 | }; | |
| 45 | ||
| 46 | /* Tx DMA packet specific flags */ | |
| 47 | #define MT_TXD_PKT_INFO_NEXT_VLD BIT(16) | |
| 48 | #define MT_TXD_PKT_INFO_TX_BURST BIT(17) | |
| 49 | #define MT_TXD_PKT_INFO_80211 BIT(19) | |
| 50 | #define MT_TXD_PKT_INFO_TSO BIT(20) | |
| 51 | #define MT_TXD_PKT_INFO_CSO BIT(21) | |
| 52 | #define MT_TXD_PKT_INFO_WIV BIT(24) | |
| 53 | #define MT_TXD_PKT_INFO_QSEL GENMASK(26, 25) | |
| 54 | ||
| 55 | enum mt76_qsel { | |
| 56 | MT_QSEL_MGMT, | |
| 57 | MT_QSEL_HCCA, | |
| 58 | MT_QSEL_EDCA, | |
| 59 | MT_QSEL_EDCA_2, | |
| 60 | }; | |
| 61 | ||
| 62 | /* Tx DMA MCU command specific flags */ | |
| 63 | #define MT_TXD_CMD_INFO_SEQ GENMASK(19, 16) | |
| 64 | #define MT_TXD_CMD_INFO_TYPE GENMASK(26, 20) | |
| 65 | ||
| 66 | static inline int mt7601u_dma_skb_wrap(struct sk_buff *skb, | |
| 67 | enum mt76_msg_port d_port, | |
| 68 | enum mt76_info_type type, u32 flags) | |
| 69 | { | |
| 70 | u32 info; | |
| 71 | ||
| 72 | /* Buffer layout: | |
| 73 | * | 4B | xfer len | pad | 4B | | |
| 74 | * | TXINFO | pkt/cmd | zero pad to 4B | zero | | |
| 75 | * | |
| 76 | * length field of TXINFO should be set to 'xfer len'. | |
| 77 | */ | |
| 78 | ||
| 79 | info = flags | | |
| d43af505 JK |
80 | FIELD_PREP(MT_TXD_INFO_LEN, round_up(skb->len, 4)) | |
| 81 | FIELD_PREP(MT_TXD_INFO_D_PORT, d_port) | | |
| 82 | FIELD_PREP(MT_TXD_INFO_TYPE, type); | |
| c869f77d JK |
83 | |
| 84 | put_unaligned_le32(info, skb_push(skb, sizeof(info))); | |
| 85 | return skb_put_padto(skb, round_up(skb->len, 4) + 4); | |
| 86 | } | |
| 87 | ||
| 88 | static inline int | |
| 89 | mt7601u_dma_skb_wrap_pkt(struct sk_buff *skb, enum mt76_qsel qsel, u32 flags) | |
| 90 | { | |
| d43af505 | 91 | flags |= FIELD_PREP(MT_TXD_PKT_INFO_QSEL, qsel); |
| c869f77d JK |
92 | return mt7601u_dma_skb_wrap(skb, WLAN_PORT, DMA_PACKET, flags); |
| 93 | } | |
| 94 | ||
| 95 | /* Common Rx DMA descriptor fields */ | |
| 96 | #define MT_RXD_INFO_LEN GENMASK(13, 0) | |
| 97 | #define MT_RXD_INFO_PCIE_INTR BIT(24) | |
| 98 | #define MT_RXD_INFO_QSEL GENMASK(26, 25) | |
| 99 | #define MT_RXD_INFO_PORT GENMASK(29, 27) | |
| 100 | #define MT_RXD_INFO_TYPE GENMASK(31, 30) | |
| 101 | ||
| 102 | /* Rx DMA packet specific flags */ | |
| 103 | #define MT_RXD_PKT_INFO_UDP_ERR BIT(16) | |
| 104 | #define MT_RXD_PKT_INFO_TCP_ERR BIT(17) | |
| 105 | #define MT_RXD_PKT_INFO_IP_ERR BIT(18) | |
| 106 | #define MT_RXD_PKT_INFO_PKT_80211 BIT(19) | |
| 107 | #define MT_RXD_PKT_INFO_L3L4_DONE BIT(20) | |
| 108 | #define MT_RXD_PKT_INFO_MAC_LEN GENMASK(23, 21) | |
| 109 | ||
| 110 | /* Rx DMA MCU command specific flags */ | |
| 111 | #define MT_RXD_CMD_INFO_SELF_GEN BIT(15) | |
| 112 | #define MT_RXD_CMD_INFO_CMD_SEQ GENMASK(19, 16) | |
| 113 | #define MT_RXD_CMD_INFO_EVT_TYPE GENMASK(23, 20) | |
| 114 | ||
| 115 | enum mt76_evt_type { | |
| 116 | CMD_DONE, | |
| 117 | CMD_ERROR, | |
| 118 | CMD_RETRY, | |
| 119 | EVENT_PWR_RSP, | |
| 120 | EVENT_WOW_RSP, | |
| 121 | EVENT_CARRIER_DETECT_RSP, | |
| 122 | EVENT_DFS_DETECT_RSP, | |
| 123 | }; | |
| 124 | ||
| 125 | #endif |