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>

MAINTAINERS

@@ -16986,6 +16986,13 @@ T:	git git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/ath.git
 F:	Documentation/devicetree/bindings/net/wireless/qcom,ath11k.yaml
 F:	drivers/net/wireless/ath/ath11k/
 
+QUALCOMM ATH12K WIRELESS DRIVER
+M:	Kalle Valo <kvalo@kernel.org>
+L:	ath12k@lists.infradead.org
+S:	Supported
+T:	git git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/ath.git
+F:	drivers/net/wireless/ath/ath12k/
+
 QUALCOMM ATHEROS ATH9K WIRELESS DRIVER
 M:	Toke Høiland-Jørgensen <toke@toke.dk>
 L:	linux-wireless@vger.kernel.org

drivers/net/wireless/ath/Kconfig

@@ -63,5 +63,6 @@ source "drivers/net/wireless/ath/wil6210/Kconfig"
 source "drivers/net/wireless/ath/ath10k/Kconfig"
 source "drivers/net/wireless/ath/wcn36xx/Kconfig"
 source "drivers/net/wireless/ath/ath11k/Kconfig"
+source "drivers/net/wireless/ath/ath12k/Kconfig"
 
 endif

drivers/net/wireless/ath/Makefile

@@ -8,6 +8,7 @@ obj-$(CONFIG_WIL6210)		+= wil6210/
 obj-$(CONFIG_ATH10K)		+= ath10k/
 obj-$(CONFIG_WCN36XX)		+= wcn36xx/
 obj-$(CONFIG_ATH11K)		+= ath11k/
+obj-$(CONFIG_ATH12K)		+= ath12k/
 
 obj-$(CONFIG_ATH_COMMON)	+= ath.o
 

drivers/net/wireless/ath/ath12k/Kconfig

+# SPDX-License-Identifier: BSD-3-Clause-Clear
+config ATH12K
+	tristate "Qualcomm Technologies Wi-Fi 7 support (ath12k)"
+	depends on MAC80211 && HAS_DMA && PCI
+	depends on CRYPTO_MICHAEL_MIC
+	select QCOM_QMI_HELPERS
+	select MHI_BUS
+	select QRTR
+	select QRTR_MHI
+	help
+	  Enable support for Qualcomm Technologies Wi-Fi 7 (IEEE
+	  802.11be) family of chipsets, for example WCN7850 and
+	  QCN9274.
+
+	  If you choose to build a module, it'll be called ath12k.
+
+config ATH12K_DEBUG
+	bool "ath12k debugging"
+	depends on ATH12K
+	help
+	  Enable debug support, for example debug messages which must
+	  be enabled separately using the debug_mask module parameter.
+
+	  If unsure, say Y to make it easier to debug problems. But if
+	  you want optimal performance choose N.
+
+config ATH12K_TRACING
+	bool "ath12k tracing support"
+	depends on ATH12K && EVENT_TRACING
+	help
+	  Enable ath12k tracing infrastructure.
+
+	  If unsure, say Y to make it easier to debug problems. But if
+	  you want optimal performance choose N.

drivers/net/wireless/ath/ath12k/Makefile

+# SPDX-License-Identifier: BSD-3-Clause-Clear
+obj-$(CONFIG_ATH12K) += ath12k.o
+ath12k-y += core.o \
+	    hal.o \
+	    hal_tx.o \
+	    hal_rx.o \
+	    wmi.o \
+	    mac.o \
+	    reg.o \
+	    htc.o \
+	    qmi.o \
+	    dp.o  \
+	    dp_tx.o \
+	    dp_rx.o \
+	    debug.o \
+	    ce.o \
+	    peer.o \
+	    dbring.o \
+	    hw.o \
+	    mhi.o \
+	    pci.o \
+	    dp_mon.o
+
+ath12k-$(CONFIG_ATH12K_TRACING) += trace.o
+
+# for tracing framework to find trace.h
+CFLAGS_trace.o := -I$(src)

drivers/net/wireless/ath/ath12k/ce.h

+/* 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_CE_H
+#define ATH12K_CE_H
+
+#define CE_COUNT_MAX 16
+
+/* Byte swap data words */
+#define CE_ATTR_BYTE_SWAP_DATA 2
+
+/* no interrupt on copy completion */
+#define CE_ATTR_DIS_INTR		8
+
+/* Host software's Copy Engine configuration. */
+#define CE_ATTR_FLAGS 0
+
+/* Threshold to poll for tx completion in case of Interrupt disabled CE's */
+#define ATH12K_CE_USAGE_THRESHOLD 32
+
+/* Directions for interconnect pipe configuration.
+ * These definitions may be used during configuration and are shared
+ * between Host and Target.
+ *
+ * Pipe Directions are relative to the Host, so PIPEDIR_IN means
+ * "coming IN over air through Target to Host" as with a WiFi Rx operation.
+ * Conversely, PIPEDIR_OUT means "going OUT from Host through Target over air"
+ * as with a WiFi Tx operation. This is somewhat awkward for the "middle-man"
+ * Target since things that are "PIPEDIR_OUT" are coming IN to the Target
+ * over the interconnect.
+ */
+#define PIPEDIR_NONE		0
+#define PIPEDIR_IN		1 /* Target-->Host, WiFi Rx direction */
+#define PIPEDIR_OUT		2 /* Host->Target, WiFi Tx direction */
+#define PIPEDIR_INOUT		3 /* bidirectional */
+#define PIPEDIR_INOUT_H2H	4 /* bidirectional, host to host */
+
+/* CE address/mask */
+#define CE_HOST_IE_ADDRESS	0x00A1803C
+#define CE_HOST_IE_2_ADDRESS	0x00A18040
+#define CE_HOST_IE_3_ADDRESS	CE_HOST_IE_ADDRESS
+
+#define CE_HOST_IE_3_SHIFT	0xC
+
+#define CE_RING_IDX_INCR(nentries_mask, idx) (((idx) + 1) & (nentries_mask))
+
+#define ATH12K_CE_RX_POST_RETRY_JIFFIES 50
+
+struct ath12k_base;
+
+/* Establish a mapping between a service/direction and a pipe.
+ * Configuration information for a Copy Engine pipe and services.
+ * Passed from Host to Target through QMI message and must be in
+ * little endian format.
+ */
+struct service_to_pipe {
+	__le32 service_id;
+	__le32 pipedir;
+	__le32 pipenum;
+};
+
+/* Configuration information for a Copy Engine pipe.
+ * Passed from Host to Target through QMI message during startup (one per CE).
+ *
+ * NOTE: Structure is shared between Host software and Target firmware!
+ */
+struct ce_pipe_config {
+	__le32 pipenum;
+	__le32 pipedir;
+	__le32 nentries;
+	__le32 nbytes_max;
+	__le32 flags;
+	__le32 reserved;
+};
+
+struct ce_attr {
+	/* CE_ATTR_* values */
+	unsigned int flags;
+
+	/* #entries in source ring - Must be a power of 2 */
+	unsigned int src_nentries;
+
+	/* Max source send size for this CE.
+	 * This is also the minimum size of a destination buffer.
+	 */
+	unsigned int src_sz_max;
+
+	/* #entries in destination ring - Must be a power of 2 */
+	unsigned int dest_nentries;
+
+	void (*recv_cb)(struct ath12k_base *ab, struct sk_buff *skb);
+};
+
+#define CE_DESC_RING_ALIGN 8
+
+struct ath12k_ce_ring {
+	/* Number of entries in this ring; must be power of 2 */
+	unsigned int nentries;
+	unsigned int nentries_mask;
+
+	/* For dest ring, this is the next index to be processed
+	 * by software after it was/is received into.
+	 *
+	 * For src ring, this is the last descriptor that was sent
+	 * and completion processed by software.
+	 *
+	 * Regardless of src or dest ring, this is an invariant
+	 * (modulo ring size):
+	 *     write index >= read index >= sw_index
+	 */
+	unsigned int sw_index;
+	/* cached copy */
+	unsigned int write_index;
+
+	/* Start of DMA-coherent area reserved for descriptors */
+	/* Host address space */
+	void *base_addr_owner_space_unaligned;
+	/* CE address space */
+	u32 base_addr_ce_space_unaligned;
+
+	/* Actual start of descriptors.
+	 * Aligned to descriptor-size boundary.
+	 * Points into reserved DMA-coherent area, above.
+	 */
+	/* Host address space */
+	void *base_addr_owner_space;
+
+	/* CE address space */
+	u32 base_addr_ce_space;
+
+	/* HAL ring id */
+	u32 hal_ring_id;
+
+	/* keep last */
+	struct sk_buff *skb[];
+};
+
+struct ath12k_ce_pipe {
+	struct ath12k_base *ab;
+	u16 pipe_num;
+	unsigned int attr_flags;
+	unsigned int buf_sz;
+	unsigned int rx_buf_needed;
+
+	void (*send_cb)(struct ath12k_ce_pipe *pipe);
+	void (*recv_cb)(struct ath12k_base *ab, struct sk_buff *skb);
+
+	struct tasklet_struct intr_tq;
+	struct ath12k_ce_ring *src_ring;
+	struct ath12k_ce_ring *dest_ring;
+	struct ath12k_ce_ring *status_ring;
+	u64 timestamp;
+};
+
+struct ath12k_ce {
+	struct ath12k_ce_pipe ce_pipe[CE_COUNT_MAX];
+	/* Protects rings of all ce pipes */
+	spinlock_t ce_lock;
+	struct ath12k_hp_update_timer hp_timer[CE_COUNT_MAX];
+};
+
+extern const struct ce_attr ath12k_host_ce_config_qcn9274[];
+extern const struct ce_attr ath12k_host_ce_config_wcn7850[];
+
+void ath12k_ce_cleanup_pipes(struct ath12k_base *ab);
+void ath12k_ce_rx_replenish_retry(struct timer_list *t);
+void ath12k_ce_per_engine_service(struct ath12k_base *ab, u16 ce_id);
+int ath12k_ce_send(struct ath12k_base *ab, struct sk_buff *skb, u8 pipe_id,
+		   u16 transfer_id);
+void ath12k_ce_rx_post_buf(struct ath12k_base *ab);
+int ath12k_ce_init_pipes(struct ath12k_base *ab);
+int ath12k_ce_alloc_pipes(struct ath12k_base *ab);
+void ath12k_ce_free_pipes(struct ath12k_base *ab);
+int ath12k_ce_get_attr_flags(struct ath12k_base *ab, int ce_id);
+void ath12k_ce_poll_send_completed(struct ath12k_base *ab, u8 pipe_id);
+int ath12k_ce_map_service_to_pipe(struct ath12k_base *ab, u16 service_id,
+				  u8 *ul_pipe, u8 *dl_pipe);
+int ath12k_ce_attr_attach(struct ath12k_base *ab);
+void ath12k_ce_get_shadow_config(struct ath12k_base *ab,
+				 u32 **shadow_cfg, u32 *shadow_cfg_len);
+#endif

drivers/net/wireless/ath/ath12k/dbring.c

+// SPDX-License-Identifier: BSD-3-Clause-Clear
+/*
+ * Copyright (c) 2019-2021 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2021-2022 Qualcomm Innovation Center, Inc. All rights reserved.
+ */
+
+#include "core.h"
+#include "debug.h"
+
+static int ath12k_dbring_bufs_replenish(struct ath12k *ar,
+					struct ath12k_dbring *ring,
+					struct ath12k_dbring_element *buff,
+					gfp_t gfp)
+{
+	struct ath12k_base *ab = ar->ab;
+	struct hal_srng *srng;
+	dma_addr_t paddr;
+	void *ptr_aligned, *ptr_unaligned, *desc;
+	int ret;
+	int buf_id;
+	u32 cookie;
+
+	srng = &ab->hal.srng_list[ring->refill_srng.ring_id];
+
+	lockdep_assert_held(&srng->lock);
+
+	ath12k_hal_srng_access_begin(ab, srng);
+
+	ptr_unaligned = buff->payload;
+	ptr_aligned = PTR_ALIGN(ptr_unaligned, ring->buf_align);
+	paddr = dma_map_single(ab->dev, ptr_aligned, ring->buf_sz,
+			       DMA_FROM_DEVICE);
+
+	ret = dma_mapping_error(ab->dev, paddr);
+	if (ret)
+		goto err;
+
+	spin_lock_bh(&ring->idr_lock);
+	buf_id = idr_alloc(&ring->bufs_idr, buff, 0, ring->bufs_max, gfp);
+	spin_unlock_bh(&ring->idr_lock);
+	if (buf_id < 0) {
+		ret = -ENOBUFS;
+		goto err_dma_unmap;
+	}
+
+	desc = ath12k_hal_srng_src_get_next_entry(ab, srng);
+	if (!desc) {
+		ret = -ENOENT;
+		goto err_idr_remove;
+	}
+
+	buff->paddr = paddr;
+
+	cookie = u32_encode_bits(ar->pdev_idx, DP_RXDMA_BUF_COOKIE_PDEV_ID) |
+		 u32_encode_bits(buf_id, DP_RXDMA_BUF_COOKIE_BUF_ID);
+
+	ath12k_hal_rx_buf_addr_info_set(desc, paddr, cookie, 0);
+
+	ath12k_hal_srng_access_end(ab, srng);
+
+	return 0;
+
+err_idr_remove:
+	spin_lock_bh(&ring->idr_lock);
+	idr_remove(&ring->bufs_idr, buf_id);
+	spin_unlock_bh(&ring->idr_lock);
+err_dma_unmap:
+	dma_unmap_single(ab->dev, paddr, ring->buf_sz,
+			 DMA_FROM_DEVICE);
+err:
+	ath12k_hal_srng_access_end(ab, srng);
+	return ret;
+}
+
+static int ath12k_dbring_fill_bufs(struct ath12k *ar,
+				   struct ath12k_dbring *ring,
+				   gfp_t gfp)
+{
+	struct ath12k_dbring_element *buff;
+	struct hal_srng *srng;
+	struct ath12k_base *ab = ar->ab;
+	int num_remain, req_entries, num_free;
+	u32 align;
+	int size, ret;
+
+	srng = &ab->hal.srng_list[ring->refill_srng.ring_id];
+
+	spin_lock_bh(&srng->lock);
+
+	num_free = ath12k_hal_srng_src_num_free(ab, srng, true);
+	req_entries = min(num_free, ring->bufs_max);
+	num_remain = req_entries;
+	align = ring->buf_align;
+	size = sizeof(*buff) + ring->buf_sz + align - 1;
+
+	while (num_remain > 0) {
+		buff = kzalloc(size, gfp);
+		if (!buff)
+			break;
+
+		ret = ath12k_dbring_bufs_replenish(ar, ring, buff, gfp);
+		if (ret) {
+			ath12k_warn(ab, "failed to replenish db ring num_remain %d req_ent %d\n",
+				    num_remain, req_entries);
+			kfree(buff);
+			break;
+		}
+		num_remain--;
+	}
+
+	spin_unlock_bh(&srng->lock);
+
+	return num_remain;
+}
+
+int ath12k_dbring_wmi_cfg_setup(struct ath12k *ar,
+				struct ath12k_dbring *ring,
+				enum wmi_direct_buffer_module id)
+{
+	struct ath12k_wmi_pdev_dma_ring_cfg_arg arg = {0};
+	int ret;
+
+	if (id >= WMI_DIRECT_BUF_MAX)
+		return -EINVAL;
+
+	arg.pdev_id = DP_SW2HW_MACID(ring->pdev_id);
+	arg.module_id = id;
+	arg.base_paddr_lo = lower_32_bits(ring->refill_srng.paddr);
+	arg.base_paddr_hi = upper_32_bits(ring->refill_srng.paddr);
+	arg.head_idx_paddr_lo = lower_32_bits(ring->hp_addr);
+	arg.head_idx_paddr_hi = upper_32_bits(ring->hp_addr);
+	arg.tail_idx_paddr_lo = lower_32_bits(ring->tp_addr);
+	arg.tail_idx_paddr_hi = upper_32_bits(ring->tp_addr);
+	arg.num_elems = ring->bufs_max;
+	arg.buf_size = ring->buf_sz;
+	arg.num_resp_per_event = ring->num_resp_per_event;
+	arg.event_timeout_ms = ring->event_timeout_ms;
+
+	ret = ath12k_wmi_pdev_dma_ring_cfg(ar, &arg);
+	if (ret) {
+		ath12k_warn(ar->ab, "failed to setup db ring cfg\n");
+		return ret;
+	}
+
+	return 0;
+}
+
+int ath12k_dbring_set_cfg(struct ath12k *ar, struct ath12k_dbring *ring,
+			  u32 num_resp_per_event, u32 event_timeout_ms,
+			  int (*handler)(struct ath12k *,
+					 struct ath12k_dbring_data *))
+{
+	if (WARN_ON(!ring))
+		return -EINVAL;
+
+	ring->num_resp_per_event = num_resp_per_event;
+	ring->event_timeout_ms = event_timeout_ms;
+	ring->handler = handler;
+
+	return 0;
+}
+
+int ath12k_dbring_buf_setup(struct ath12k *ar,
+			    struct ath12k_dbring *ring,
+			    struct ath12k_dbring_cap *db_cap)
+{
+	struct ath12k_base *ab = ar->ab;
+	struct hal_srng *srng;
+	int ret;
+
+	srng = &ab->hal.srng_list[ring->refill_srng.ring_id];
+	ring->bufs_max = ring->refill_srng.size /
+		ath12k_hal_srng_get_entrysize(ab, HAL_RXDMA_DIR_BUF);
+
+	ring->buf_sz = db_cap->min_buf_sz;
+	ring->buf_align = db_cap->min_buf_align;
+	ring->pdev_id = db_cap->pdev_id;
+	ring->hp_addr = ath12k_hal_srng_get_hp_addr(ab, srng);
+	ring->tp_addr = ath12k_hal_srng_get_tp_addr(ab, srng);
+
+	ret = ath12k_dbring_fill_bufs(ar, ring, GFP_KERNEL);
+
+	return ret;
+}
+
+int ath12k_dbring_srng_setup(struct ath12k *ar, struct ath12k_dbring *ring,
+			     int ring_num, int num_entries)
+{
+	int ret;
+
+	ret = ath12k_dp_srng_setup(ar->ab, &ring->refill_srng, HAL_RXDMA_DIR_BUF,
+				   ring_num, ar->pdev_idx, num_entries);
+	if (ret < 0) {
+		ath12k_warn(ar->ab, "failed to setup srng: %d ring_id %d\n",
+			    ret, ring_num);
+		goto err;
+	}
+
+	return 0;
+err:
+	ath12k_dp_srng_cleanup(ar->ab, &ring->refill_srng);
+	return ret;
+}
+
+int ath12k_dbring_get_cap(struct ath12k_base *ab,
+			  u8 pdev_idx,
+			  enum wmi_direct_buffer_module id,
+			  struct ath12k_dbring_cap *db_cap)
+{
+	int i;
+
+	if (!ab->num_db_cap || !ab->db_caps)
+		return -ENOENT;
+
+	if (id >= WMI_DIRECT_BUF_MAX)
+		return -EINVAL;
+
+	for (i = 0; i < ab->num_db_cap; i++) {
+		if (pdev_idx == ab->db_caps[i].pdev_id &&
+		    id == ab->db_caps[i].id) {
+			*db_cap = ab->db_caps[i];
+
+			return 0;
+		}
+	}
+
+	return -ENOENT;
+}
+
+int ath12k_dbring_buffer_release_event(struct ath12k_base *ab,
+				       struct ath12k_dbring_buf_release_event *ev)
+{
+	struct ath12k_dbring *ring;
+	struct hal_srng *srng;
+	struct ath12k *ar;
+	struct ath12k_dbring_element *buff;
+	struct ath12k_dbring_data handler_data;
+	struct ath12k_buffer_addr desc;
+	u8 *vaddr_unalign;
+	u32 num_entry, num_buff_reaped;
+	u8 pdev_idx, rbm;
+	u32 cookie;
+	int buf_id;
+	int size;
+	dma_addr_t paddr;
+	int ret = 0;
+
+	pdev_idx = le32_to_cpu(ev->fixed.pdev_id);
+
+	if (pdev_idx >= ab->num_radios) {
+		ath12k_warn(ab, "Invalid pdev id %d\n", pdev_idx);
+		return -EINVAL;
+	}
+
+	if (ev->fixed.num_buf_release_entry !=
+	    ev->fixed.num_meta_data_entry) {
+		ath12k_warn(ab, "Buffer entry %d mismatch meta entry %d\n",
+			    ev->fixed.num_buf_release_entry,
+			    ev->fixed.num_meta_data_entry);
+		return -EINVAL;
+	}
+
+	ar = ab->pdevs[pdev_idx].ar;
+
+	rcu_read_lock();
+	if (!rcu_dereference(ab->pdevs_active[pdev_idx])) {
+		ret = -EINVAL;
+		goto rcu_unlock;
+	}
+
+	switch (ev->fixed.module_id) {
+	case WMI_DIRECT_BUF_SPECTRAL:
+		break;
+	default:
+		ring = NULL;
+		ath12k_warn(ab, "Recv dma buffer release ev on unsupp module %d\n",
+			    ev->fixed.module_id);
+		break;
+	}
+
+	if (!ring) {
+		ret = -EINVAL;
+		goto rcu_unlock;
+	}
+
+	srng = &ab->hal.srng_list[ring->refill_srng.ring_id];
+	num_entry = le32_to_cpu(ev->fixed.num_buf_release_entry);
+	size = sizeof(*buff) + ring->buf_sz + ring->buf_align - 1;
+	num_buff_reaped = 0;
+
+	spin_lock_bh(&srng->lock);
+
+	while (num_buff_reaped < num_entry) {
+		desc.info0 = ev->buf_entry[num_buff_reaped].paddr_lo;
+		desc.info1 = ev->buf_entry[num_buff_reaped].paddr_hi;
+		handler_data.meta = ev->meta_data[num_buff_reaped];
+
+		num_buff_reaped++;
+
+		ath12k_hal_rx_buf_addr_info_get(&desc, &paddr, &cookie, &rbm);
+
+		buf_id = u32_get_bits(cookie, DP_RXDMA_BUF_COOKIE_BUF_ID);
+
+		spin_lock_bh(&ring->idr_lock);
+		buff = idr_find(&ring->bufs_idr, buf_id);
+		if (!buff) {
+			spin_unlock_bh(&ring->idr_lock);
+			continue;
+		}
+		idr_remove(&ring->bufs_idr, buf_id);
+		spin_unlock_bh(&ring->idr_lock);
+
+		dma_unmap_single(ab->dev, buff->paddr, ring->buf_sz,
+				 DMA_FROM_DEVICE);
+
+		if (ring->handler) {
+			vaddr_unalign = buff->payload;
+			handler_data.data = PTR_ALIGN(vaddr_unalign,
+						      ring->buf_align);
+			handler_data.data_sz = ring->buf_sz;
+
+			ring->handler(ar, &handler_data);
+		}
+
+		memset(buff, 0, size);
+		ath12k_dbring_bufs_replenish(ar, ring, buff, GFP_ATOMIC);
+	}
+
+	spin_unlock_bh(&srng->lock);
+
+rcu_unlock:
+	rcu_read_unlock();
+
+	return ret;
+}
+
+void ath12k_dbring_srng_cleanup(struct ath12k *ar, struct ath12k_dbring *ring)
+{
+	ath12k_dp_srng_cleanup(ar->ab, &ring->refill_srng);
+}
+
+void ath12k_dbring_buf_cleanup(struct ath12k *ar, struct ath12k_dbring *ring)
+{
+	struct ath12k_dbring_element *buff;
+	int buf_id;
+
+	spin_lock_bh(&ring->idr_lock);
+	idr_for_each_entry(&ring->bufs_idr, buff, buf_id) {
+		idr_remove(&ring->bufs_idr, buf_id);
+		dma_unmap_single(ar->ab->dev, buff->paddr,
+				 ring->buf_sz, DMA_FROM_DEVICE);
+		kfree(buff);
+	}
+
+	idr_destroy(&ring->bufs_idr);
+	spin_unlock_bh(&ring->idr_lock);
+}

drivers/net/wireless/ath/ath12k/dbring.h

+/* SPDX-License-Identifier: BSD-3-Clause-Clear */
+/*
+ * Copyright (c) 2019-2021 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2021-2022 Qualcomm Innovation Center, Inc. All rights reserved.
+ */
+
+#ifndef ATH12K_DBRING_H
+#define ATH12K_DBRING_H
+
+#include <linux/types.h>
+#include <linux/idr.h>
+#include <linux/spinlock.h>
+#include "dp.h"
+
+struct ath12k_dbring_element {
+	dma_addr_t paddr;
+	u8 payload[];
+};
+
+struct ath12k_dbring_data {
+	void *data;
+	u32 data_sz;
+	struct ath12k_wmi_dma_buf_release_meta_data_params meta;
+};
+
+struct ath12k_dbring_buf_release_event {
+	struct ath12k_wmi_dma_buf_release_fixed_params fixed;
+	const struct ath12k_wmi_dma_buf_release_entry_params *buf_entry;
+	const struct ath12k_wmi_dma_buf_release_meta_data_params *meta_data;
+	u32 num_buf_entry;
+	u32 num_meta;
+};
+
+struct ath12k_dbring_cap {
+	u32 pdev_id;
+	enum wmi_direct_buffer_module id;
+	u32 min_elem;
+	u32 min_buf_sz;
+	u32 min_buf_align;
+};
+
+struct ath12k_dbring {
+	struct dp_srng refill_srng;
+	struct idr bufs_idr;
+	/* Protects bufs_idr */
+	spinlock_t idr_lock;
+	dma_addr_t tp_addr;
+	dma_addr_t hp_addr;
+	int bufs_max;
+	u32 pdev_id;
+	u32 buf_sz;
+	u32 buf_align;
+	u32 num_resp_per_event;
+	u32 event_timeout_ms;
+	int (*handler)(struct ath12k *ar, struct ath12k_dbring_data *data);
+};
+
+int ath12k_dbring_set_cfg(struct ath12k *ar,
+			  struct ath12k_dbring *ring,
+			  u32 num_resp_per_event,
+			  u32 event_timeout_ms,
+			  int (*handler)(struct ath12k *,
+					 struct ath12k_dbring_data *));
+int ath12k_dbring_wmi_cfg_setup(struct ath12k *ar,
+				struct ath12k_dbring *ring,
+				enum wmi_direct_buffer_module id);
+int ath12k_dbring_buf_setup(struct ath12k *ar,
+			    struct ath12k_dbring *ring,
+			    struct ath12k_dbring_cap *db_cap);
+int ath12k_dbring_srng_setup(struct ath12k *ar, struct ath12k_dbring *ring,
+			     int ring_num, int num_entries);
+int ath12k_dbring_buffer_release_event(struct ath12k_base *ab,
+				       struct ath12k_dbring_buf_release_event *ev);
+int ath12k_dbring_get_cap(struct ath12k_base *ab,
+			  u8 pdev_idx,
+			  enum wmi_direct_buffer_module id,
+			  struct ath12k_dbring_cap *db_cap);
+void ath12k_dbring_srng_cleanup(struct ath12k *ar, struct ath12k_dbring *ring);
+void ath12k_dbring_buf_cleanup(struct ath12k *ar, struct ath12k_dbring *ring);
+#endif /* ATH12K_DBRING_H */

drivers/net/wireless/ath/ath12k/debug.c

+// 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.
+ */
+
+#include <linux/vmalloc.h>
+#include "core.h"
+#include "debug.h"
+
+void ath12k_info(struct ath12k_base *ab, const char *fmt, ...)
+{
+	struct va_format vaf = {
+		.fmt = fmt,
+	};
+	va_list args;
+
+	va_start(args, fmt);
+	vaf.va = &args;
+	dev_info(ab->dev, "%pV", &vaf);
+	/* TODO: Trace the log */
+	va_end(args);
+}
+
+void ath12k_err(struct ath12k_base *ab, const char *fmt, ...)
+{
+	struct va_format vaf = {
+		.fmt = fmt,
+	};
+	va_list args;
+
+	va_start(args, fmt);
+	vaf.va = &args;
+	dev_err(ab->dev, "%pV", &vaf);
+	/* TODO: Trace the log */
+	va_end(args);
+}
+
+void ath12k_warn(struct ath12k_base *ab, const char *fmt, ...)
+{
+	struct va_format vaf = {
+		.fmt = fmt,
+	};
+	va_list args;
+
+	va_start(args, fmt);
+	vaf.va = &args;
+	dev_warn_ratelimited(ab->dev, "%pV", &vaf);
+	/* TODO: Trace the log */
+	va_end(args);
+}
+
+#ifdef CONFIG_ATH12K_DEBUG
+
+void __ath12k_dbg(struct ath12k_base *ab, enum ath12k_debug_mask mask,
+		  const char *fmt, ...)
+{
+	struct va_format vaf;
+	va_list args;
+
+	va_start(args, fmt);
+
+	vaf.fmt = fmt;
+	vaf.va = &args;
+
+	if (ath12k_debug_mask & mask)
+		dev_dbg(ab->dev, "%pV", &vaf);
+
+	/* TODO: trace log */
+
+	va_end(args);
+}
+
+void ath12k_dbg_dump(struct ath12k_base *ab,
+		     enum ath12k_debug_mask mask,
+		     const char *msg, const char *prefix,
+		     const void *buf, size_t len)
+{
+	char linebuf[256];
+	size_t linebuflen;
+	const void *ptr;
+
+	if (ath12k_debug_mask & mask) {
+		if (msg)
+			__ath12k_dbg(ab, mask, "%s\n", msg);
+
+		for (ptr = buf; (ptr - buf) < len; ptr += 16) {
+			linebuflen = 0;
+			linebuflen += scnprintf(linebuf + linebuflen,
+						sizeof(linebuf) - linebuflen,
+						"%s%08x: ",
+						(prefix ? prefix : ""),
+						(unsigned int)(ptr - buf));
+			hex_dump_to_buffer(ptr, len - (ptr - buf), 16, 1,
+					   linebuf + linebuflen,
+					   sizeof(linebuf) - linebuflen, true);
+			dev_dbg(ab->dev, "%s\n", linebuf);
+		}
+	}
+}
+
+#endif /* CONFIG_ATH12K_DEBUG */

drivers/net/wireless/ath/ath12k/debug.h

+/* 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_DEBUG_H_
+#define _ATH12K_DEBUG_H_
+
+#include "trace.h"
+
+enum ath12k_debug_mask {
+	ATH12K_DBG_AHB		= 0x00000001,
+	ATH12K_DBG_WMI		= 0x00000002,
+	ATH12K_DBG_HTC		= 0x00000004,
+	ATH12K_DBG_DP_HTT	= 0x00000008,
+	ATH12K_DBG_MAC		= 0x00000010,
+	ATH12K_DBG_BOOT		= 0x00000020,
+	ATH12K_DBG_QMI		= 0x00000040,
+	ATH12K_DBG_DATA		= 0x00000080,
+	ATH12K_DBG_MGMT		= 0x00000100,
+	ATH12K_DBG_REG		= 0x00000200,
+	ATH12K_DBG_TESTMODE	= 0x00000400,
+	ATH12K_DBG_HAL		= 0x00000800,
+	ATH12K_DBG_PCI		= 0x00001000,
+	ATH12K_DBG_DP_TX	= 0x00002000,
+	ATH12K_DBG_DP_RX	= 0x00004000,
+	ATH12K_DBG_ANY		= 0xffffffff,
+};
+
+__printf(2, 3) void ath12k_info(struct ath12k_base *ab, const char *fmt, ...);
+__printf(2, 3) void ath12k_err(struct ath12k_base *ab, const char *fmt, ...);
+__printf(2, 3) void ath12k_warn(struct ath12k_base *ab, const char *fmt, ...);
+
+extern unsigned int ath12k_debug_mask;
+
+#ifdef CONFIG_ATH12K_DEBUG
+__printf(3, 4) void __ath12k_dbg(struct ath12k_base *ab,
+				 enum ath12k_debug_mask mask,
+				 const char *fmt, ...);
+void ath12k_dbg_dump(struct ath12k_base *ab,
+		     enum ath12k_debug_mask mask,
+		     const char *msg, const char *prefix,
+		     const void *buf, size_t len);
+#else /* CONFIG_ATH12K_DEBUG */
+static inline void __ath12k_dbg(struct ath12k_base *ab,
+				enum ath12k_debug_mask dbg_mask,
+				const char *fmt, ...)
+{
+}
+
+static inline void ath12k_dbg_dump(struct ath12k_base *ab,
+				   enum ath12k_debug_mask mask,
+				   const char *msg, const char *prefix,
+				   const void *buf, size_t len)
+{
+}
+#endif /* CONFIG_ATH12K_DEBUG */
+
+#define ath12k_dbg(ar, dbg_mask, fmt, ...)			\
+do {								\
+	typeof(dbg_mask) mask = (dbg_mask);			\
+	if (ath12k_debug_mask & mask)				\
+		__ath12k_dbg(ar, mask, fmt, ##__VA_ARGS__);	\
+} while (0)
+
+#endif /* _ATH12K_DEBUG_H_ */

drivers/net/wireless/ath/ath12k/dp_mon.h

+/* SPDX-License-Identifier: BSD-3-Clause-Clear */
+/*
+ * Copyright (c) 2019-2021 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2021-2022 Qualcomm Innovation Center, Inc. All rights reserved.
+ */
+
+#ifndef ATH12K_DP_MON_H
+#define ATH12K_DP_MON_H
+
+#include "core.h"
+
+enum dp_monitor_mode {
+	ATH12K_DP_TX_MONITOR_MODE,
+	ATH12K_DP_RX_MONITOR_MODE
+};
+
+enum dp_mon_tx_ppdu_info_type {
+	DP_MON_TX_PROT_PPDU_INFO,
+	DP_MON_TX_DATA_PPDU_INFO
+};
+
+enum dp_mon_tx_tlv_status {
+	DP_MON_TX_FES_SETUP,
+	DP_MON_TX_FES_STATUS_END,
+	DP_MON_RX_RESPONSE_REQUIRED_INFO,
+	DP_MON_RESPONSE_END_STATUS_INFO,
+	DP_MON_TX_MPDU_START,
+	DP_MON_TX_MSDU_START,
+	DP_MON_TX_BUFFER_ADDR,
+	DP_MON_TX_DATA,
+	DP_MON_TX_STATUS_PPDU_NOT_DONE,
+};
+
+enum dp_mon_tx_medium_protection_type {
+	DP_MON_TX_MEDIUM_NO_PROTECTION,
+	DP_MON_TX_MEDIUM_RTS_LEGACY,
+	DP_MON_TX_MEDIUM_RTS_11AC_STATIC_BW,
+	DP_MON_TX_MEDIUM_RTS_11AC_DYNAMIC_BW,
+	DP_MON_TX_MEDIUM_CTS2SELF,
+	DP_MON_TX_MEDIUM_QOS_NULL_NO_ACK_3ADDR,
+	DP_MON_TX_MEDIUM_QOS_NULL_NO_ACK_4ADDR
+};
+
+struct dp_mon_qosframe_addr4 {
+	__le16 frame_control;
+	__le16 duration;
+	u8 addr1[ETH_ALEN];
+	u8 addr2[ETH_ALEN];
+	u8 addr3[ETH_ALEN];
+	__le16 seq_ctrl;
+	u8 addr4[ETH_ALEN];
+	__le16 qos_ctrl;
+} __packed;
+
+struct dp_mon_frame_min_one {
+	__le16 frame_control;
+	__le16 duration;
+	u8 addr1[ETH_ALEN];
+} __packed;
+
+struct dp_mon_packet_info {
+	u64 cookie;
+	u16 dma_length;
+	bool msdu_continuation;
+	bool truncated;
+};
+
+struct dp_mon_tx_ppdu_info {
+	u32 ppdu_id;
+	u8  num_users;
+	bool is_used;
+	struct hal_rx_mon_ppdu_info rx_status;
+	struct list_head dp_tx_mon_mpdu_list;
+	struct dp_mon_mpdu *tx_mon_mpdu;
+};
+
+enum hal_rx_mon_status
+ath12k_dp_mon_rx_parse_mon_status(struct ath12k *ar,
+				  struct ath12k_mon_data *pmon,
+				  int mac_id, struct sk_buff *skb,
+				  struct napi_struct *napi);
+int ath12k_dp_mon_buf_replenish(struct ath12k_base *ab,
+				struct dp_rxdma_ring *buf_ring,
+				int req_entries);
+int ath12k_dp_mon_srng_process(struct ath12k *ar, int mac_id,
+			       int *budget, enum dp_monitor_mode monitor_mode,
+			       struct napi_struct *napi);
+int ath12k_dp_mon_process_ring(struct ath12k_base *ab, int mac_id,
+			       struct napi_struct *napi, int budget,
+			       enum dp_monitor_mode monitor_mode);
+struct sk_buff *ath12k_dp_mon_tx_alloc_skb(void);
+enum dp_mon_tx_tlv_status
+ath12k_dp_mon_tx_status_get_num_user(u16 tlv_tag,
+				     struct hal_tlv_hdr *tx_tlv,
+				     u8 *num_users);
+enum hal_rx_mon_status
+ath12k_dp_mon_tx_parse_mon_status(struct ath12k *ar,
+				  struct ath12k_mon_data *pmon,
+				  int mac_id,
+				  struct sk_buff *skb,
+				  struct napi_struct *napi,
+				  u32 ppdu_id);
+void ath12k_dp_mon_rx_process_ulofdma(struct hal_rx_mon_ppdu_info *ppdu_info);
+int ath12k_dp_mon_rx_process_stats(struct ath12k *ar, int mac_id,
+				   struct napi_struct *napi, int *budget);
+#endif

drivers/net/wireless/ath/ath12k/dp_rx.h

+/* 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_DP_RX_H
+#define ATH12K_DP_RX_H
+
+#include "core.h"
+#include "rx_desc.h"
+#include "debug.h"
+
+#define DP_MAX_NWIFI_HDR_LEN	30
+
+struct ath12k_dp_rx_tid {
+	u8 tid;
+	u32 *vaddr;
+	dma_addr_t paddr;
+	u32 size;
+	u32 ba_win_sz;
+	bool active;
+
+	/* Info related to rx fragments */
+	u32 cur_sn;
+	u16 last_frag_no;
+	u16 rx_frag_bitmap;
+
+	struct sk_buff_head rx_frags;
+	struct hal_reo_dest_ring *dst_ring_desc;
+
+	/* Timer info related to fragments */
+	struct timer_list frag_timer;
+	struct ath12k_base *ab;
+};
+
+struct ath12k_dp_rx_reo_cache_flush_elem {
+	struct list_head list;
+	struct ath12k_dp_rx_tid data;
+	unsigned long ts;
+};
+
+struct ath12k_dp_rx_reo_cmd {
+	struct list_head list;
+	struct ath12k_dp_rx_tid data;
+	int cmd_num;
+	void (*handler)(struct ath12k_dp *dp, void *ctx,
+			enum hal_reo_cmd_status status);
+};
+
+#define ATH12K_DP_RX_REO_DESC_FREE_THRES  64
+#define ATH12K_DP_RX_REO_DESC_FREE_TIMEOUT_MS 1000
+
+enum ath12k_dp_rx_decap_type {
+	DP_RX_DECAP_TYPE_RAW,
+	DP_RX_DECAP_TYPE_NATIVE_WIFI,
+	DP_RX_DECAP_TYPE_ETHERNET2_DIX,
+	DP_RX_DECAP_TYPE_8023,
+};
+
+struct ath12k_dp_rx_rfc1042_hdr {
+	u8 llc_dsap;
+	u8 llc_ssap;
+	u8 llc_ctrl;
+	u8 snap_oui[3];
+	__be16 snap_type;
+} __packed;
+
+static inline u32 ath12k_he_gi_to_nl80211_he_gi(u8 sgi)
+{
+	u32 ret = 0;
+
+	switch (sgi) {
+	case RX_MSDU_START_SGI_0_8_US:
+		ret = NL80211_RATE_INFO_HE_GI_0_8;
+		break;
+	case RX_MSDU_START_SGI_1_6_US:
+		ret = NL80211_RATE_INFO_HE_GI_1_6;
+		break;
+	case RX_MSDU_START_SGI_3_2_US:
+		ret = NL80211_RATE_INFO_HE_GI_3_2;
+		break;
+	}
+
+	return ret;
+}
+
+int ath12k_dp_rx_ampdu_start(struct ath12k *ar,
+			     struct ieee80211_ampdu_params *params);
+int ath12k_dp_rx_ampdu_stop(struct ath12k *ar,
+			    struct ieee80211_ampdu_params *params);
+int ath12k_dp_rx_peer_pn_replay_config(struct ath12k_vif *arvif,
+				       const u8 *peer_addr,
+				       enum set_key_cmd key_cmd,
+				       struct ieee80211_key_conf *key);
+void ath12k_dp_rx_peer_tid_cleanup(struct ath12k *ar, struct ath12k_peer *peer);
+void ath12k_dp_rx_peer_tid_delete(struct ath12k *ar,
+				  struct ath12k_peer *peer, u8 tid);
+int ath12k_dp_rx_peer_tid_setup(struct ath12k *ar, const u8 *peer_mac, int vdev_id,
+				u8 tid, u32 ba_win_sz, u16 ssn,
+				enum hal_pn_type pn_type);
+void ath12k_dp_htt_htc_t2h_msg_handler(struct ath12k_base *ab,
+				       struct sk_buff *skb);
+int ath12k_dp_rx_pdev_reo_setup(struct ath12k_base *ab);
+void ath12k_dp_rx_pdev_reo_cleanup(struct ath12k_base *ab);
+int ath12k_dp_rx_htt_setup(struct ath12k_base *ab);
+int ath12k_dp_rx_alloc(struct ath12k_base *ab);
+void ath12k_dp_rx_free(struct ath12k_base *ab);
+int ath12k_dp_rx_pdev_alloc(struct ath12k_base *ab, int pdev_idx);
+void ath12k_dp_rx_pdev_free(struct ath12k_base *ab, int pdev_idx);
+void ath12k_dp_rx_reo_cmd_list_cleanup(struct ath12k_base *ab);
+void ath12k_dp_rx_process_reo_status(struct ath12k_base *ab);
+int ath12k_dp_rx_process_wbm_err(struct ath12k_base *ab,
+				 struct napi_struct *napi, int budget);
+int ath12k_dp_rx_process_err(struct ath12k_base *ab, struct napi_struct *napi,
+			     int budget);
+int ath12k_dp_rx_process(struct ath12k_base *ab, int mac_id,
+			 struct napi_struct *napi,
+			 int budget);
+int ath12k_dp_rx_bufs_replenish(struct ath12k_base *ab, int mac_id,
+				struct dp_rxdma_ring *rx_ring,
+				int req_entries,
+				enum hal_rx_buf_return_buf_manager mgr,
+				bool hw_cc);
+int ath12k_dp_rx_pdev_mon_attach(struct ath12k *ar);
+int ath12k_dp_rx_peer_frag_setup(struct ath12k *ar, const u8 *peer_mac, int vdev_id);
+
+int ath12k_dp_rx_pktlog_start(struct ath12k_base *ab);
+int ath12k_dp_rx_pktlog_stop(struct ath12k_base *ab, bool stop_timer);
+u8 ath12k_dp_rx_h_l3pad(struct ath12k_base *ab,
+			struct hal_rx_desc *desc);
+struct ath12k_peer *
+ath12k_dp_rx_h_find_peer(struct ath12k_base *ab, struct sk_buff *msdu);
+u8 ath12k_dp_rx_h_decap_type(struct ath12k_base *ab,
+			     struct hal_rx_desc *desc);
+u32 ath12k_dp_rx_h_mpdu_err(struct ath12k_base *ab,
+			    struct hal_rx_desc *desc);
+void ath12k_dp_rx_h_ppdu(struct ath12k *ar, struct hal_rx_desc *rx_desc,
+			 struct ieee80211_rx_status *rx_status);
+struct ath12k_peer *
+ath12k_dp_rx_h_find_peer(struct ath12k_base *ab, struct sk_buff *msdu);
+
+int ath12k_dp_rxdma_ring_sel_config_qcn9274(struct ath12k_base *ab);
+int ath12k_dp_rxdma_ring_sel_config_wcn7850(struct ath12k_base *ab);
+
+#endif /* ATH12K_DP_RX_H */

drivers/net/wireless/ath/ath12k/dp_tx.h

+/* 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_DP_TX_H
+#define ATH12K_DP_TX_H
+
+#include "core.h"
+#include "hal_tx.h"
+
+struct ath12k_dp_htt_wbm_tx_status {
+	bool acked;
+	int ack_rssi;
+};
+
+int ath12k_dp_tx_htt_h2t_ver_req_msg(struct ath12k_base *ab);
+int ath12k_dp_tx(struct ath12k *ar, struct ath12k_vif *arvif,
+		 struct sk_buff *skb);
+void ath12k_dp_tx_completion_handler(struct ath12k_base *ab, int ring_id);
+
+int ath12k_dp_tx_htt_h2t_ppdu_stats_req(struct ath12k *ar, u32 mask);
+int
+ath12k_dp_tx_htt_h2t_ext_stats_req(struct ath12k *ar, u8 type,
+				   struct htt_ext_stats_cfg_params *cfg_params,
+				   u64 cookie);
+int ath12k_dp_tx_htt_rx_monitor_mode_ring_config(struct ath12k *ar, bool reset);
+
+int ath12k_dp_tx_htt_rx_filter_setup(struct ath12k_base *ab, u32 ring_id,
+				     int mac_id, enum hal_ring_type ring_type,
+				     int rx_buf_size,
+				     struct htt_rx_ring_tlv_filter *tlv_filter);
+void ath12k_dp_tx_put_bank_profile(struct ath12k_dp *dp, u8 bank_id);
+int ath12k_dp_tx_htt_tx_filter_setup(struct ath12k_base *ab, u32 ring_id,
+				     int mac_id, enum hal_ring_type ring_type,
+				     int tx_buf_size,
+				     struct htt_tx_ring_tlv_filter *htt_tlv_filter);
+int ath12k_dp_tx_htt_tx_monitor_mode_ring_config(struct ath12k *ar, bool reset);
+int ath12k_dp_tx_htt_monitor_mode_ring_config(struct ath12k *ar, bool reset);
+#endif

drivers/net/wireless/ath/ath12k/hal_tx.c

+// 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.
+ */
+
+#include "hal_desc.h"
+#include "hal.h"
+#include "hal_tx.h"
+#include "hif.h"
+
+#define DSCP_TID_MAP_TBL_ENTRY_SIZE 64
+
+/* dscp_tid_map - Default DSCP-TID mapping
+ *=================
+ * DSCP        TID
+ *=================
+ * 000xxx      0
+ * 001xxx      1
+ * 010xxx      2
+ * 011xxx      3
+ * 100xxx      4
+ * 101xxx      5
+ * 110xxx      6
+ * 111xxx      7
+ */
+static inline u8 dscp2tid(u8 dscp)
+{
+	return dscp >> 3;
+}
+
+void ath12k_hal_tx_cmd_desc_setup(struct ath12k_base *ab,
+				  struct hal_tcl_data_cmd *tcl_cmd,
+				  struct hal_tx_info *ti)
+{
+	tcl_cmd->buf_addr_info.info0 =
+		le32_encode_bits(ti->paddr, BUFFER_ADDR_INFO0_ADDR);
+	tcl_cmd->buf_addr_info.info1 =
+		le32_encode_bits(((uint64_t)ti->paddr >> HAL_ADDR_MSB_REG_SHIFT),
+				 BUFFER_ADDR_INFO1_ADDR);
+	tcl_cmd->buf_addr_info.info1 |=
+		le32_encode_bits((ti->rbm_id), BUFFER_ADDR_INFO1_RET_BUF_MGR) |
+		le32_encode_bits(ti->desc_id, BUFFER_ADDR_INFO1_SW_COOKIE);
+
+	tcl_cmd->info0 =
+		le32_encode_bits(ti->type, HAL_TCL_DATA_CMD_INFO0_DESC_TYPE) |
+		le32_encode_bits(ti->bank_id, HAL_TCL_DATA_CMD_INFO0_BANK_ID);
+
+	tcl_cmd->info1 =
+		le32_encode_bits(ti->meta_data_flags,
+				 HAL_TCL_DATA_CMD_INFO1_CMD_NUM);
+
+	tcl_cmd->info2 = cpu_to_le32(ti->flags0) |
+		le32_encode_bits(ti->data_len, HAL_TCL_DATA_CMD_INFO2_DATA_LEN) |
+		le32_encode_bits(ti->pkt_offset, HAL_TCL_DATA_CMD_INFO2_PKT_OFFSET);
+
+	tcl_cmd->info3 = cpu_to_le32(ti->flags1) |
+		le32_encode_bits(ti->tid, HAL_TCL_DATA_CMD_INFO3_TID) |
+		le32_encode_bits(ti->lmac_id, HAL_TCL_DATA_CMD_INFO3_PMAC_ID) |
+		le32_encode_bits(ti->vdev_id, HAL_TCL_DATA_CMD_INFO3_VDEV_ID);
+
+	tcl_cmd->info4 = le32_encode_bits(ti->bss_ast_idx,
+					  HAL_TCL_DATA_CMD_INFO4_SEARCH_INDEX) |
+			 le32_encode_bits(ti->bss_ast_hash,
+					  HAL_TCL_DATA_CMD_INFO4_CACHE_SET_NUM);
+	tcl_cmd->info5 = 0;
+}
+
+void ath12k_hal_tx_set_dscp_tid_map(struct ath12k_base *ab, int id)
+{
+	u32 ctrl_reg_val;
+	u32 addr;
+	u8 hw_map_val[HAL_DSCP_TID_TBL_SIZE], dscp, tid;
+	int i;
+	u32 value;
+
+	ctrl_reg_val = ath12k_hif_read32(ab, HAL_SEQ_WCSS_UMAC_TCL_REG +
+					 HAL_TCL1_RING_CMN_CTRL_REG);
+	/* Enable read/write access */
+	ctrl_reg_val |= HAL_TCL1_RING_CMN_CTRL_DSCP_TID_MAP_PROG_EN;
+	ath12k_hif_write32(ab, HAL_SEQ_WCSS_UMAC_TCL_REG +
+			   HAL_TCL1_RING_CMN_CTRL_REG, ctrl_reg_val);
+
+	addr = HAL_SEQ_WCSS_UMAC_TCL_REG + HAL_TCL1_RING_DSCP_TID_MAP +
+	       (4 * id * (HAL_DSCP_TID_TBL_SIZE / 4));
+
+	/* Configure each DSCP-TID mapping in three bits there by configure
+	 * three bytes in an iteration.
+	 */
+	for (i = 0, dscp = 0; i < HAL_DSCP_TID_TBL_SIZE; i += 3) {
+		tid = dscp2tid(dscp);
+		value = u32_encode_bits(tid, HAL_TCL1_RING_FIELD_DSCP_TID_MAP0);
+		dscp++;
+
+		tid = dscp2tid(dscp);
+		value |= u32_encode_bits(tid, HAL_TCL1_RING_FIELD_DSCP_TID_MAP1);
+		dscp++;
+
+		tid = dscp2tid(dscp);
+		value |= u32_encode_bits(tid, HAL_TCL1_RING_FIELD_DSCP_TID_MAP2);
+		dscp++;
+
+		tid = dscp2tid(dscp);
+		value |= u32_encode_bits(tid, HAL_TCL1_RING_FIELD_DSCP_TID_MAP3);
+		dscp++;
+
+		tid = dscp2tid(dscp);
+		value |= u32_encode_bits(tid, HAL_TCL1_RING_FIELD_DSCP_TID_MAP4);
+		dscp++;
+
+		tid = dscp2tid(dscp);
+		value |= u32_encode_bits(tid, HAL_TCL1_RING_FIELD_DSCP_TID_MAP5);
+		dscp++;
+
+		tid = dscp2tid(dscp);
+		value |= u32_encode_bits(tid, HAL_TCL1_RING_FIELD_DSCP_TID_MAP6);
+		dscp++;
+
+		tid = dscp2tid(dscp);
+		value |= u32_encode_bits(tid, HAL_TCL1_RING_FIELD_DSCP_TID_MAP7);
+		dscp++;
+
+		memcpy(&hw_map_val[i], &value, 3);
+	}
+
+	for (i = 0; i < HAL_DSCP_TID_TBL_SIZE; i += 4) {
+		ath12k_hif_write32(ab, addr, *(u32 *)&hw_map_val[i]);
+		addr += 4;
+	}
+
+	/* Disable read/write access */
+	ctrl_reg_val = ath12k_hif_read32(ab, HAL_SEQ_WCSS_UMAC_TCL_REG +
+					 HAL_TCL1_RING_CMN_CTRL_REG);
+	ctrl_reg_val &= ~HAL_TCL1_RING_CMN_CTRL_DSCP_TID_MAP_PROG_EN;
+	ath12k_hif_write32(ab, HAL_SEQ_WCSS_UMAC_TCL_REG +
+			   HAL_TCL1_RING_CMN_CTRL_REG,
+			   ctrl_reg_val);
+}
+
+void ath12k_hal_tx_configure_bank_register(struct ath12k_base *ab, u32 bank_config,
+					   u8 bank_id)
+{
+	ath12k_hif_write32(ab, HAL_TCL_SW_CONFIG_BANK_ADDR + 4 * bank_id,
+			   bank_config);
+}

drivers/net/wireless/ath/ath12k/mac.h

+/* 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_MAC_H
+#define ATH12K_MAC_H
+
+#include <net/mac80211.h>
+#include <net/cfg80211.h>
+
+struct ath12k;
+struct ath12k_base;
+
+struct ath12k_generic_iter {
+	struct ath12k *ar;
+	int ret;
+};
+
+/* number of failed packets (20 packets with 16 sw reties each) */
+#define ATH12K_KICKOUT_THRESHOLD		(20 * 16)
+
+/* Use insanely high numbers to make sure that the firmware implementation
+ * won't start, we have the same functionality already in hostapd. Unit
+ * is seconds.
+ */
+#define ATH12K_KEEPALIVE_MIN_IDLE		3747
+#define ATH12K_KEEPALIVE_MAX_IDLE		3895
+#define ATH12K_KEEPALIVE_MAX_UNRESPONSIVE	3900
+
+/* FIXME: should these be in ieee80211.h? */
+#define IEEE80211_VHT_MCS_SUPPORT_0_11_MASK	GENMASK(23, 16)
+#define IEEE80211_DISABLE_VHT_MCS_SUPPORT_0_11	BIT(24)
+
+#define ATH12K_CHAN_WIDTH_NUM			8
+
+#define ATH12K_TX_POWER_MAX_VAL	70
+#define ATH12K_TX_POWER_MIN_VAL	0
+
+enum ath12k_supported_bw {
+	ATH12K_BW_20    = 0,
+	ATH12K_BW_40    = 1,
+	ATH12K_BW_80    = 2,
+	ATH12K_BW_160   = 3,
+};
+
+extern const struct htt_rx_ring_tlv_filter ath12k_mac_mon_status_filter_default;
+
+void ath12k_mac_destroy(struct ath12k_base *ab);
+void ath12k_mac_unregister(struct ath12k_base *ab);
+int ath12k_mac_register(struct ath12k_base *ab);
+int ath12k_mac_allocate(struct ath12k_base *ab);
+int ath12k_mac_hw_ratecode_to_legacy_rate(u8 hw_rc, u8 preamble, u8 *rateidx,
+					  u16 *rate);
+u8 ath12k_mac_bitrate_to_idx(const struct ieee80211_supported_band *sband,
+			     u32 bitrate);
+u8 ath12k_mac_hw_rate_to_idx(const struct ieee80211_supported_band *sband,
+			     u8 hw_rate, bool cck);
+
+void __ath12k_mac_scan_finish(struct ath12k *ar);
+void ath12k_mac_scan_finish(struct ath12k *ar);
+
+struct ath12k_vif *ath12k_mac_get_arvif(struct ath12k *ar, u32 vdev_id);
+struct ath12k_vif *ath12k_mac_get_arvif_by_vdev_id(struct ath12k_base *ab,
+						   u32 vdev_id);
+struct ath12k *ath12k_mac_get_ar_by_vdev_id(struct ath12k_base *ab, u32 vdev_id);
+struct ath12k *ath12k_mac_get_ar_by_pdev_id(struct ath12k_base *ab, u32 pdev_id);
+
+void ath12k_mac_drain_tx(struct ath12k *ar);
+void ath12k_mac_peer_cleanup_all(struct ath12k *ar);
+int ath12k_mac_tx_mgmt_pending_free(int buf_id, void *skb, void *ctx);
+enum rate_info_bw ath12k_mac_bw_to_mac80211_bw(enum ath12k_supported_bw bw);
+enum ath12k_supported_bw ath12k_mac_mac80211_bw_to_ath12k_bw(enum rate_info_bw bw);
+enum hal_encrypt_type ath12k_dp_tx_get_encrypt_type(u32 cipher);
+#endif

drivers/net/wireless/ath/ath12k/trace.c

+// SPDX-License-Identifier: BSD-3-Clause-Clear
+/*
+ * Copyright (c) 2019-2021 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2021-2022 Qualcomm Innovation Center, Inc. All rights reserved.
+ */
+
+#include <linux/module.h>
+
+#define CREATE_TRACE_POINTS
+#include "trace.h"