diff options
Diffstat (limited to 'drivers/net/wireless/mediatek/mt76/dma.h')
| -rw-r--r-- | drivers/net/wireless/mediatek/mt76/dma.h | 214 |
1 files changed, 214 insertions, 0 deletions
diff --git a/drivers/net/wireless/mediatek/mt76/dma.h b/drivers/net/wireless/mediatek/mt76/dma.h new file mode 100644 index 000000000000..4a63de6c5bf5 --- /dev/null +++ b/drivers/net/wireless/mediatek/mt76/dma.h @@ -0,0 +1,214 @@ +/* SPDX-License-Identifier: BSD-3-Clause-Clear */ +/* + * Copyright (C) 2016 Felix Fietkau <nbd@nbd.name> + */ +#ifndef __MT76_DMA_H +#define __MT76_DMA_H + +#define DMA_DUMMY_DATA ((void *)~0) + +#define MT_RING_SIZE 0x10 + +#define MT_DMA_CTL_SD_LEN1 GENMASK(13, 0) +#define MT_DMA_CTL_LAST_SEC1 BIT(14) +#define MT_DMA_CTL_BURST BIT(15) +#define MT_DMA_CTL_SD_LEN0 GENMASK(29, 16) +#define MT_DMA_CTL_LAST_SEC0 BIT(30) +#define MT_DMA_CTL_DMA_DONE BIT(31) +#define MT_DMA_CTL_TO_HOST BIT(8) +#define MT_DMA_CTL_TO_HOST_A BIT(12) +#define MT_DMA_CTL_DROP BIT(14) +#define MT_DMA_CTL_TOKEN GENMASK(31, 16) +#define MT_DMA_CTL_SDP1_H GENMASK(19, 16) +#define MT_DMA_CTL_SDP0_H GENMASK(3, 0) +#define MT_DMA_CTL_WO_DROP BIT(8) + +#define MT_DMA_PPE_CPU_REASON GENMASK(15, 11) +#define MT_DMA_PPE_ENTRY GENMASK(30, 16) +#define MT_DMA_INFO_DMA_FRAG BIT(9) +#define MT_DMA_INFO_PPE_VLD BIT(31) + +#define MT_DMA_CTL_PN_CHK_FAIL BIT(13) +#define MT_DMA_CTL_VER_MASK BIT(7) + +#define MT_DMA_SDP0 GENMASK(15, 0) +#define MT_DMA_TOKEN_ID GENMASK(31, 16) +#define MT_DMA_MAGIC_MASK GENMASK(31, 28) +#define MT_DMA_RRO_EN BIT(13) + +#define MT_DMA_MAGIC_CNT 16 + +#define MT_DMA_WED_IND_CMD_CNT 8 +#define MT_DMA_WED_IND_REASON GENMASK(15, 12) + +#define MT_DMA_HDR_LEN 4 +#define MT_RX_INFO_LEN 4 +#define MT_FCE_INFO_LEN 4 +#define MT_RX_RXWI_LEN 32 + +#if IS_ENABLED(CONFIG_NET_MEDIATEK_SOC_WED) + +#define Q_READ(_q, _field) ({ \ + u32 _offset = offsetof(struct mt76_queue_regs, _field); \ + u32 _val; \ + if ((_q)->flags & MT_QFLAG_WED) \ + _val = mtk_wed_device_reg_read((_q)->wed, \ + ((_q)->wed_regs + \ + _offset)); \ + else \ + _val = readl(&(_q)->regs->_field); \ + _val; \ +}) + +#define Q_WRITE(_q, _field, _val) do { \ + u32 _offset = offsetof(struct mt76_queue_regs, _field); \ + if ((_q)->flags & MT_QFLAG_WED) \ + mtk_wed_device_reg_write((_q)->wed, \ + ((_q)->wed_regs + _offset), \ + _val); \ + else \ + writel(_val, &(_q)->regs->_field); \ +} while (0) + +#elif IS_ENABLED(CONFIG_MT76_NPU) + +#define Q_READ(_q, _field) ({ \ + u32 _offset = offsetof(struct mt76_queue_regs, _field); \ + u32 _val = 0; \ + if ((_q)->flags & MT_QFLAG_NPU) { \ + struct airoha_npu *npu; \ + \ + rcu_read_lock(); \ + npu = rcu_dereference(q->dev->mmio.npu); \ + if (npu) \ + regmap_read(npu->regmap, \ + ((_q)->wed_regs + _offset), &_val); \ + rcu_read_unlock(); \ + } else { \ + _val = readl(&(_q)->regs->_field); \ + } \ + _val; \ +}) + +#define Q_WRITE(_q, _field, _val) do { \ + u32 _offset = offsetof(struct mt76_queue_regs, _field); \ + if ((_q)->flags & MT_QFLAG_NPU) { \ + struct airoha_npu *npu; \ + \ + rcu_read_lock(); \ + npu = rcu_dereference(q->dev->mmio.npu); \ + if (npu) \ + regmap_write(npu->regmap, \ + ((_q)->wed_regs + _offset), _val); \ + rcu_read_unlock(); \ + } else { \ + writel(_val, &(_q)->regs->_field); \ + } \ +} while (0) + +#else + +#define Q_READ(_q, _field) readl(&(_q)->regs->_field) +#define Q_WRITE(_q, _field, _val) writel(_val, &(_q)->regs->_field) + +#endif + +struct mt76_desc { + __le32 buf0; + __le32 ctrl; + __le32 buf1; + __le32 info; +} __packed __aligned(4); + +struct mt76_wed_rro_desc { + __le32 buf0; + __le32 buf1; +} __packed __aligned(4); + +/* data1 */ +#define RRO_RXDMAD_DATA1_LS_MASK BIT(30) +#define RRO_RXDMAD_DATA1_SDL0_MASK GENMASK(29, 16) +/* data2 */ +#define RRO_RXDMAD_DATA2_RX_TOKEN_ID_MASK GENMASK(31, 16) +#define RRO_RXDMAD_DATA2_IND_REASON_MASK GENMASK(15, 12) +/* data3 */ +#define RRO_RXDMAD_DATA3_MAGIC_CNT_MASK GENMASK(31, 28) +struct mt76_rro_rxdmad_c { + __le32 data0; + __le32 data1; + __le32 data2; + __le32 data3; +}; + +enum mt76_qsel { + MT_QSEL_MGMT, + MT_QSEL_HCCA, + MT_QSEL_EDCA, + MT_QSEL_EDCA_2, +}; + +enum mt76_mcu_evt_type { + EVT_CMD_DONE, + EVT_CMD_ERROR, + EVT_CMD_RETRY, + EVT_EVENT_PWR_RSP, + EVT_EVENT_WOW_RSP, + EVT_EVENT_CARRIER_DETECT_RSP, + EVT_EVENT_DFS_DETECT_RSP, +}; + +enum mt76_dma_wed_ind_reason { + MT_DMA_WED_IND_REASON_NORMAL, + MT_DMA_WED_IND_REASON_REPEAT, + MT_DMA_WED_IND_REASON_OLDPKT, +}; + +int mt76_dma_rx_poll(struct napi_struct *napi, int budget); +void mt76_dma_attach(struct mt76_dev *dev); +void mt76_dma_cleanup(struct mt76_dev *dev); +int mt76_dma_rx_fill(struct mt76_dev *dev, struct mt76_queue *q, + bool allow_direct); +void mt76_dma_queue_reset(struct mt76_dev *dev, struct mt76_queue *q, + bool reset_idx); + +static inline void +mt76_dma_reset_tx_queue(struct mt76_dev *dev, struct mt76_queue *q) +{ + dev->queue_ops->reset_q(dev, q, true); + if (mtk_wed_device_active(&dev->mmio.wed)) + mt76_wed_dma_setup(dev, q, true); +} + +static inline void +mt76_dma_should_drop_buf(bool *drop, u32 ctrl, u32 buf1, u32 info) +{ + if (!drop) + return; + + *drop = !!(ctrl & (MT_DMA_CTL_TO_HOST_A | MT_DMA_CTL_DROP)); + if (!(ctrl & MT_DMA_CTL_VER_MASK)) + return; + + switch (FIELD_GET(MT_DMA_WED_IND_REASON, buf1)) { + case MT_DMA_WED_IND_REASON_REPEAT: + *drop = true; + break; + case MT_DMA_WED_IND_REASON_OLDPKT: + *drop = !(info & MT_DMA_INFO_DMA_FRAG); + break; + default: + *drop = !!(ctrl & MT_DMA_CTL_PN_CHK_FAIL); + break; + } +} + +static inline void *mt76_priv(struct net_device *dev) +{ + struct mt76_dev **priv; + + priv = netdev_priv(dev); + + return *priv; +} + +#endif |