mirror of
https://github.com/outbackdingo/mt76.git
synced 2026-10-24 21:36:52 +00:00
Felix Fietkau
33f29d2345
MediaTek has asked to switch from the ISC license to BSD-3-Clause-Clear, in order to improve clarity and the legal integrity of the code. The BSD-3-Clause license includes the "no endorsement" clause, which is important for protecting the reputation of the original authors and contributors by preventing unauthorized use of their names for endorsement purposes. This clause is absent in the BSD-2-Clause license, which is more permissive but lacks this specific protection. This change also cleans up the license of some Kconfig/Makefile files, which were accidentally marked as GPL. The GPL 2.0 remains in use on mt76x0, as well as two source files in mt7615 for which the license situation still needs to be clarified. Signed-off-by: Felix Fietkau <[email protected]>
148 lines
3.4 KiB
C
148 lines
3.4 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause-Clear */
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/*
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* Copyright (C) 2016 Felix Fietkau <[email protected]>
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*/
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#ifndef __MT76_DMA_H
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#define __MT76_DMA_H
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#define DMA_DUMMY_DATA ((void *)~0)
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#define MT_RING_SIZE 0x10
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#define MT_DMA_CTL_SD_LEN1 GENMASK(13, 0)
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#define MT_DMA_CTL_LAST_SEC1 BIT(14)
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#define MT_DMA_CTL_BURST BIT(15)
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#define MT_DMA_CTL_SD_LEN0 GENMASK(29, 16)
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#define MT_DMA_CTL_LAST_SEC0 BIT(30)
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#define MT_DMA_CTL_DMA_DONE BIT(31)
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#define MT_DMA_CTL_TO_HOST BIT(8)
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#define MT_DMA_CTL_TO_HOST_A BIT(12)
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#define MT_DMA_CTL_DROP BIT(14)
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#define MT_DMA_CTL_TOKEN GENMASK(31, 16)
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#define MT_DMA_CTL_SDP1_H GENMASK(19, 16)
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#define MT_DMA_CTL_SDP0_H GENMASK(3, 0)
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#define MT_DMA_CTL_WO_DROP BIT(8)
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#define MT_DMA_PPE_CPU_REASON GENMASK(15, 11)
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#define MT_DMA_PPE_ENTRY GENMASK(30, 16)
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#define MT_DMA_INFO_DMA_FRAG BIT(9)
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#define MT_DMA_INFO_PPE_VLD BIT(31)
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#define MT_DMA_CTL_PN_CHK_FAIL BIT(13)
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#define MT_DMA_CTL_VER_MASK BIT(7)
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#define MT_DMA_SDP0 GENMASK(15, 0)
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#define MT_DMA_TOKEN_ID GENMASK(31, 16)
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#define MT_DMA_MAGIC_MASK GENMASK(31, 28)
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#define MT_DMA_RRO_EN BIT(13)
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#define MT_DMA_MAGIC_CNT 16
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#define MT_DMA_WED_IND_CMD_CNT 8
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#define MT_DMA_WED_IND_REASON GENMASK(15, 12)
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#define MT_DMA_HDR_LEN 4
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#define MT_RX_INFO_LEN 4
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#define MT_FCE_INFO_LEN 4
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#define MT_RX_RXWI_LEN 32
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struct mt76_desc {
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__le32 buf0;
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__le32 ctrl;
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__le32 buf1;
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__le32 info;
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} __packed __aligned(4);
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struct mt76_wed_rro_desc {
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__le32 buf0;
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__le32 buf1;
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} __packed __aligned(4);
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/* data1 */
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#define RRO_RXDMAD_DATA1_LS_MASK BIT(30)
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#define RRO_RXDMAD_DATA1_SDL0_MASK GENMASK(29, 16)
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/* data2 */
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#define RRO_RXDMAD_DATA2_RX_TOKEN_ID_MASK GENMASK(31, 16)
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#define RRO_RXDMAD_DATA2_IND_REASON_MASK GENMASK(15, 12)
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/* data3 */
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#define RRO_RXDMAD_DATA3_MAGIC_CNT_MASK GENMASK(31, 28)
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struct mt76_rro_rxdmad_c {
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__le32 data0;
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__le32 data1;
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__le32 data2;
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__le32 data3;
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};
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enum mt76_qsel {
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MT_QSEL_MGMT,
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MT_QSEL_HCCA,
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MT_QSEL_EDCA,
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MT_QSEL_EDCA_2,
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};
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enum mt76_mcu_evt_type {
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EVT_CMD_DONE,
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EVT_CMD_ERROR,
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EVT_CMD_RETRY,
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EVT_EVENT_PWR_RSP,
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EVT_EVENT_WOW_RSP,
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EVT_EVENT_CARRIER_DETECT_RSP,
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EVT_EVENT_DFS_DETECT_RSP,
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};
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enum mt76_dma_wed_ind_reason {
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MT_DMA_WED_IND_REASON_NORMAL,
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MT_DMA_WED_IND_REASON_REPEAT,
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MT_DMA_WED_IND_REASON_OLDPKT,
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};
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int mt76_dma_rx_poll(struct napi_struct *napi, int budget);
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void mt76_dma_attach(struct mt76_dev *dev);
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void mt76_dma_cleanup(struct mt76_dev *dev);
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int mt76_dma_rx_fill(struct mt76_dev *dev, struct mt76_queue *q,
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bool allow_direct);
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void mt76_dma_queue_reset(struct mt76_dev *dev, struct mt76_queue *q,
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bool reset_idx);
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static inline void
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mt76_dma_reset_tx_queue(struct mt76_dev *dev, struct mt76_queue *q)
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{
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dev->queue_ops->reset_q(dev, q, true);
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if (mtk_wed_device_active(&dev->mmio.wed))
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mt76_wed_dma_setup(dev, q, true);
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}
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static inline void
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mt76_dma_should_drop_buf(bool *drop, u32 ctrl, u32 buf1, u32 info)
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{
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if (!drop)
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return;
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*drop = !!(ctrl & (MT_DMA_CTL_TO_HOST_A | MT_DMA_CTL_DROP));
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if (!(ctrl & MT_DMA_CTL_VER_MASK))
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return;
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switch (FIELD_GET(MT_DMA_WED_IND_REASON, buf1)) {
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case MT_DMA_WED_IND_REASON_REPEAT:
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*drop = true;
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break;
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case MT_DMA_WED_IND_REASON_OLDPKT:
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*drop = !(info & MT_DMA_INFO_DMA_FRAG);
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break;
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default:
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*drop = !!(ctrl & MT_DMA_CTL_PN_CHK_FAIL);
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break;
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}
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}
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static inline void *mt76_priv(struct net_device *dev)
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{
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struct mt76_dev **priv;
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priv = netdev_priv(dev);
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return *priv;
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}
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#endif
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