wifi: ath12k: driver for Qualcomm Wi-Fi 7 devices

ath12k is a new mac80211 driver for Qualcomm Wi-Fi 7 devices, first
supporting QCN9274 and WCN7850 PCI devices.  QCN9274 supports both AP
and station; WCN7850 supports only station mode. Monitor mode is not
(yet) supported. Only PCI bus devices are supported.

ath12k is forked from an earlier version of ath11k. It was simpler to
have a "clean start" for the new generation and not try to share the
code with ath11k. This makes maintenance easier and avoids major
changes in ath11k, which would have significantly increased the risk
of regressions in existing setups.

ath12k uses le32 and cpu_to_le32() macros to handle endian
conversions, instead of using the firmware byte swap feature utilized
by ath11k. There is only one kernel module, named ath12k.ko.

Currently ath12k only supports HE mode (IEEE 802.11ax) or older, but
work is ongoing to add EHT mode (IEEE 802.11be) support.

The size of the driver is ~41 kLOC and 45 files. To make the review
easier, this initial version of ath12k does not support Device Tree,
debugfs or any other extra features. Those will be added later, after
ath12k is accepted to upstream.

The driver is build tested by Intel's kernel test robot with both GCC
and Clang. Sparse reports no warnings. The driver is mostly free of
checkpatch warnings, albeit few of the warnings are omitted on
purpose, list of them here:

https://github.com/qca/qca-swiss-army-knife/blob/master/tools/scripts/ath12k/ath12k-check#L52

The driver has had multiple authors who are listed in alphabetical
order below.

Co-developed-by: Balamurugan Selvarajan <quic_bselvara@quicinc.com>
Signed-off-by: Balamurugan Selvarajan <quic_bselvara@quicinc.com>
Co-developed-by: Baochen Qiang <quic_bqiang@quicinc.com>
Signed-off-by: Baochen Qiang <quic_bqiang@quicinc.com>
Co-developed-by: Bhagavathi Perumal S <quic_bperumal@quicinc.com>
Signed-off-by: Bhagavathi Perumal S <quic_bperumal@quicinc.com>
Co-developed-by: Carl Huang <quic_cjhuang@quicinc.com>
Signed-off-by: Carl Huang <quic_cjhuang@quicinc.com>
Co-developed-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Co-developed-by: Karthikeyan Periyasamy <quic_periyasa@quicinc.com>
Signed-off-by: Karthikeyan Periyasamy <quic_periyasa@quicinc.com>
Co-developed-by: P Praneesh <quic_ppranees@quicinc.com>
Signed-off-by: P Praneesh <quic_ppranees@quicinc.com>
Co-developed-by: Pradeep Kumar Chitrapu <quic_pradeepc@quicinc.com>
Signed-off-by: Pradeep Kumar Chitrapu <quic_pradeepc@quicinc.com>
Co-developed-by: Ramya Gnanasekar <quic_rgnanase@quicinc.com>
Signed-off-by: Ramya Gnanasekar <quic_rgnanase@quicinc.com>
Co-developed-by: Sriram R <quic_srirrama@quicinc.com>
Signed-off-by: Sriram R <quic_srirrama@quicinc.com>
Co-developed-by: Vasanthakumar Thiagarajan <quic_vthiagar@quicinc.com>
Signed-off-by: Vasanthakumar Thiagarajan <quic_vthiagar@quicinc.com>
Co-developed-by: Wen Gong <quic_wgong@quicinc.com>
Signed-off-by: Wen Gong <quic_wgong@quicinc.com>
Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>

1 files changed, 194 insertions, 0 deletions

diff --git a/drivers/net/wireless/ath/ath12k/hal_tx.h b/drivers/net/wireless/ath/ath12k/hal_tx.h
new file mode 100644
index 000000000000..7c837094a6f7
--- /dev/null
+++ b/drivers/net/wireless/ath/ath12k/hal_tx.h
@@ -0,0 +1,194 @@
+/* SPDX-License-Identifier: BSD-3-Clause-Clear */
+/*
+ * Copyright (c) 2018-2021 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2021-2022 Qualcomm Innovation Center, Inc. All rights reserved.
+ */
+
+#ifndef ATH12K_HAL_TX_H
+#define ATH12K_HAL_TX_H
+
+#include "hal_desc.h"
+#include "core.h"
+
+#define HAL_TX_ADDRX_EN			1
+#define HAL_TX_ADDRY_EN			2
+
+#define HAL_TX_ADDR_SEARCH_DEFAULT	0
+#define HAL_TX_ADDR_SEARCH_INDEX	1
+
+/* TODO: check all these data can be managed with struct ath12k_tx_desc_info for perf */
+struct hal_tx_info {
+	u16 meta_data_flags; /* %HAL_TCL_DATA_CMD_INFO0_META_ */
+	u8 ring_id;
+	u8 rbm_id;
+	u32 desc_id;
+	enum hal_tcl_desc_type type;
+	enum hal_tcl_encap_type encap_type;
+	dma_addr_t paddr;
+	u32 data_len;
+	u32 pkt_offset;
+	enum hal_encrypt_type encrypt_type;
+	u32 flags0; /* %HAL_TCL_DATA_CMD_INFO1_ */
+	u32 flags1; /* %HAL_TCL_DATA_CMD_INFO2_ */
+	u16 addr_search_flags; /* %HAL_TCL_DATA_CMD_INFO0_ADDR(X/Y)_ */
+	u16 bss_ast_hash;
+	u16 bss_ast_idx;
+	u8 tid;
+	u8 search_type; /* %HAL_TX_ADDR_SEARCH_ */
+	u8 lmac_id;
+	u8 vdev_id;
+	u8 dscp_tid_tbl_idx;
+	bool enable_mesh;
+	int bank_id;
+};
+
+/* TODO: Check if the actual desc macros can be used instead */
+#define HAL_TX_STATUS_FLAGS_FIRST_MSDU		BIT(0)
+#define HAL_TX_STATUS_FLAGS_LAST_MSDU		BIT(1)
+#define HAL_TX_STATUS_FLAGS_MSDU_IN_AMSDU	BIT(2)
+#define HAL_TX_STATUS_FLAGS_RATE_STATS_VALID	BIT(3)
+#define HAL_TX_STATUS_FLAGS_RATE_LDPC		BIT(4)
+#define HAL_TX_STATUS_FLAGS_RATE_STBC		BIT(5)
+#define HAL_TX_STATUS_FLAGS_OFDMA		BIT(6)
+
+#define HAL_TX_STATUS_DESC_LEN		sizeof(struct hal_wbm_release_ring)
+
+/* Tx status parsed from srng desc */
+struct hal_tx_status {
+	enum hal_wbm_rel_src_module buf_rel_source;
+	enum hal_wbm_tqm_rel_reason status;
+	u8 ack_rssi;
+	u32 flags; /* %HAL_TX_STATUS_FLAGS_ */
+	u32 ppdu_id;
+	u8 try_cnt;
+	u8 tid;
+	u16 peer_id;
+	u32 rate_stats;
+};
+
+#define HAL_TX_PHY_DESC_INFO0_BF_TYPE		GENMASK(17, 16)
+#define HAL_TX_PHY_DESC_INFO0_PREAMBLE_11B	BIT(20)
+#define HAL_TX_PHY_DESC_INFO0_PKT_TYPE		GENMASK(24, 21)
+#define HAL_TX_PHY_DESC_INFO0_BANDWIDTH		GENMASK(30, 28)
+#define HAL_TX_PHY_DESC_INFO1_MCS		GENMASK(3, 0)
+#define HAL_TX_PHY_DESC_INFO1_STBC		BIT(6)
+#define HAL_TX_PHY_DESC_INFO2_NSS		GENMASK(23, 21)
+#define HAL_TX_PHY_DESC_INFO3_AP_PKT_BW		GENMASK(6, 4)
+#define HAL_TX_PHY_DESC_INFO3_LTF_SIZE		GENMASK(20, 19)
+#define HAL_TX_PHY_DESC_INFO3_ACTIVE_CHANNEL	GENMASK(17, 15)
+
+struct hal_tx_phy_desc {
+	__le32 info0;
+	__le32 info1;
+	__le32 info2;
+	__le32 info3;
+} __packed;
+
+#define HAL_TX_FES_STAT_PROT_INFO0_STRT_FRM_TS_15_0	GENMASK(15, 0)
+#define HAL_TX_FES_STAT_PROT_INFO0_STRT_FRM_TS_31_16	GENMASK(31, 16)
+#define HAL_TX_FES_STAT_PROT_INFO1_END_FRM_TS_15_0	GENMASK(15, 0)
+#define HAL_TX_FES_STAT_PROT_INFO1_END_FRM_TS_31_16	GENMASK(31, 16)
+
+struct hal_tx_fes_status_prot {
+	__le64 reserved;
+	__le32 info0;
+	__le32 info1;
+	__le32 reserved1[11];
+} __packed;
+
+#define HAL_TX_FES_STAT_USR_PPDU_INFO0_DURATION		GENMASK(15, 0)
+
+struct hal_tx_fes_status_user_ppdu {
+	__le64 reserved;
+	__le32 info0;
+	__le32 reserved1[3];
+} __packed;
+
+#define HAL_TX_FES_STAT_STRT_INFO0_PROT_TS_LOWER_32	GENMASK(31, 0)
+#define HAL_TX_FES_STAT_STRT_INFO1_PROT_TS_UPPER_32	GENMASK(31, 0)
+
+struct hal_tx_fes_status_start_prot {
+	__le32 info0;
+	__le32 info1;
+	__le64 reserved;
+} __packed;
+
+#define HAL_TX_FES_STATUS_START_INFO0_MEDIUM_PROT_TYPE	GENMASK(29, 27)
+
+struct hal_tx_fes_status_start {
+	__le32 reserved;
+	__le32 info0;
+	__le64 reserved1;
+} __packed;
+
+#define HAL_TX_Q_EXT_INFO0_FRAME_CTRL		GENMASK(15, 0)
+#define HAL_TX_Q_EXT_INFO0_QOS_CTRL		GENMASK(31, 16)
+#define HAL_TX_Q_EXT_INFO1_AMPDU_FLAG		BIT(0)
+
+struct hal_tx_queue_exten {
+	__le32 info0;
+	__le32 info1;
+} __packed;
+
+#define HAL_TX_FES_SETUP_INFO0_NUM_OF_USERS	GENMASK(28, 23)
+
+struct hal_tx_fes_setup {
+	__le32 schedule_id;
+	__le32 info0;
+	__le64 reserved;
+} __packed;
+
+#define HAL_TX_PPDU_SETUP_INFO0_MEDIUM_PROT_TYPE	GENMASK(2, 0)
+#define HAL_TX_PPDU_SETUP_INFO1_PROT_FRAME_ADDR1_31_0	GENMASK(31, 0)
+#define HAL_TX_PPDU_SETUP_INFO2_PROT_FRAME_ADDR1_47_32	GENMASK(15, 0)
+#define HAL_TX_PPDU_SETUP_INFO2_PROT_FRAME_ADDR2_15_0	GENMASK(31, 16)
+#define HAL_TX_PPDU_SETUP_INFO3_PROT_FRAME_ADDR2_47_16	GENMASK(31, 0)
+#define HAL_TX_PPDU_SETUP_INFO4_PROT_FRAME_ADDR3_31_0	GENMASK(31, 0)
+#define HAL_TX_PPDU_SETUP_INFO5_PROT_FRAME_ADDR3_47_32	GENMASK(15, 0)
+#define HAL_TX_PPDU_SETUP_INFO5_PROT_FRAME_ADDR4_15_0	GENMASK(31, 16)
+#define HAL_TX_PPDU_SETUP_INFO6_PROT_FRAME_ADDR4_47_16	GENMASK(31, 0)
+
+struct hal_tx_pcu_ppdu_setup_init {
+	__le32 info0;
+	__le32 info1;
+	__le32 info2;
+	__le32 info3;
+	__le32 reserved;
+	__le32 info4;
+	__le32 info5;
+	__le32 info6;
+} __packed;
+
+#define HAL_TX_FES_STATUS_END_INFO0_START_TIMESTAMP_15_0	GENMASK(15, 0)
+#define HAL_TX_FES_STATUS_END_INFO0_START_TIMESTAMP_31_16	GENMASK(31, 16)
+
+struct hal_tx_fes_status_end {
+	__le32 reserved[2];
+	__le32 info0;
+	__le32 reserved1[19];
+} __packed;
+
+#define HAL_TX_BANK_CONFIG_EPD			BIT(0)
+#define HAL_TX_BANK_CONFIG_ENCAP_TYPE		GENMASK(2, 1)
+#define HAL_TX_BANK_CONFIG_ENCRYPT_TYPE		GENMASK(6, 3)
+#define HAL_TX_BANK_CONFIG_SRC_BUFFER_SWAP	BIT(7)
+#define HAL_TX_BANK_CONFIG_LINK_META_SWAP	BIT(8)
+#define HAL_TX_BANK_CONFIG_INDEX_LOOKUP_EN	BIT(9)
+#define HAL_TX_BANK_CONFIG_ADDRX_EN		BIT(10)
+#define HAL_TX_BANK_CONFIG_ADDRY_EN		BIT(11)
+#define HAL_TX_BANK_CONFIG_MESH_EN		GENMASK(13, 12)
+#define HAL_TX_BANK_CONFIG_VDEV_ID_CHECK_EN	BIT(14)
+#define HAL_TX_BANK_CONFIG_PMAC_ID		GENMASK(16, 15)
+/* STA mode will have MCAST_PKT_CTRL instead of DSCP_TID_MAP bitfield */
+#define HAL_TX_BANK_CONFIG_DSCP_TIP_MAP_ID	GENMASK(22, 17)
+
+void ath12k_hal_tx_cmd_desc_setup(struct ath12k_base *ab,
+				  struct hal_tcl_data_cmd *tcl_cmd,
+				  struct hal_tx_info *ti);
+void ath12k_hal_tx_set_dscp_tid_map(struct ath12k_base *ab, int id);
+int ath12k_hal_reo_cmd_send(struct ath12k_base *ab, struct hal_srng *srng,
+			    enum hal_reo_cmd_type type,
+			    struct ath12k_hal_reo_cmd *cmd);
+void ath12k_hal_tx_configure_bank_register(struct ath12k_base *ab, u32 bank_config,
+					   u8 bank_id);
+#endif