1 /* 2 * Copyright (C) 2016 Felix Fietkau <nbd@nbd.name> 3 * 4 * Permission to use, copy, modify, and/or distribute this software for any 5 * purpose with or without fee is hereby granted, provided that the above 6 * copyright notice and this permission notice appear in all copies. 7 * 8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 15 */ 16 #ifndef __MT76_DMA_H 17 #define __MT76_DMA_H 18 19 #define MT_RING_SIZE 0x10 20 21 #define MT_DMA_CTL_SD_LEN1 GENMASK(13, 0) 22 #define MT_DMA_CTL_LAST_SEC1 BIT(14) 23 #define MT_DMA_CTL_BURST BIT(15) 24 #define MT_DMA_CTL_SD_LEN0 GENMASK(29, 16) 25 #define MT_DMA_CTL_LAST_SEC0 BIT(30) 26 #define MT_DMA_CTL_DMA_DONE BIT(31) 27 28 #define MT_TXD_INFO_LEN GENMASK(15, 0) 29 #define MT_TXD_INFO_NEXT_VLD BIT(16) 30 #define MT_TXD_INFO_TX_BURST BIT(17) 31 #define MT_TXD_INFO_80211 BIT(19) 32 #define MT_TXD_INFO_TSO BIT(20) 33 #define MT_TXD_INFO_CSO BIT(21) 34 #define MT_TXD_INFO_WIV BIT(24) 35 #define MT_TXD_INFO_QSEL GENMASK(26, 25) 36 #define MT_TXD_INFO_DPORT GENMASK(29, 27) 37 #define MT_TXD_INFO_TYPE GENMASK(31, 30) 38 39 #define MT_RX_FCE_INFO_LEN GENMASK(13, 0) 40 #define MT_RX_FCE_INFO_SELF_GEN BIT(15) 41 #define MT_RX_FCE_INFO_CMD_SEQ GENMASK(19, 16) 42 #define MT_RX_FCE_INFO_EVT_TYPE GENMASK(23, 20) 43 #define MT_RX_FCE_INFO_PCIE_INTR BIT(24) 44 #define MT_RX_FCE_INFO_QSEL GENMASK(26, 25) 45 #define MT_RX_FCE_INFO_D_PORT GENMASK(29, 27) 46 #define MT_RX_FCE_INFO_TYPE GENMASK(31, 30) 47 48 /* MCU request message header */ 49 #define MT_MCU_MSG_LEN GENMASK(15, 0) 50 #define MT_MCU_MSG_CMD_SEQ GENMASK(19, 16) 51 #define MT_MCU_MSG_CMD_TYPE GENMASK(26, 20) 52 #define MT_MCU_MSG_PORT GENMASK(29, 27) 53 #define MT_MCU_MSG_TYPE GENMASK(31, 30) 54 #define MT_MCU_MSG_TYPE_CMD BIT(30) 55 56 #define MT_DMA_HDR_LEN 4 57 #define MT_RX_INFO_LEN 4 58 #define MT_FCE_INFO_LEN 4 59 #define MT_RX_RXWI_LEN 32 60 61 struct mt76_desc { 62 __le32 buf0; 63 __le32 ctrl; 64 __le32 buf1; 65 __le32 info; 66 } __packed __aligned(4); 67 68 enum dma_msg_port { 69 WLAN_PORT, 70 CPU_RX_PORT, 71 CPU_TX_PORT, 72 HOST_PORT, 73 VIRTUAL_CPU_RX_PORT, 74 VIRTUAL_CPU_TX_PORT, 75 DISCARD, 76 }; 77 78 int mt76_dma_attach(struct mt76_dev *dev); 79 void mt76_dma_cleanup(struct mt76_dev *dev); 80 81 #endif 82
