xref: /kernel/linux/linux-6.6/drivers/net/wireless/ath/ath12k/dp.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 <crypto/hash.h>
#include "core.h"
#include "dp_tx.h"
#include "hal_tx.h"
#include "hif.h"
#include "debug.h"
#include "dp_rx.h"
#include "peer.h"
#include "dp_mon.h"

static void ath12k_dp_htt_htc_tx_complete(struct ath12k_base *ab,
					  struct sk_buff *skb)
{
	dev_kfree_skb_any(skb);
}

void ath12k_dp_peer_cleanup(struct ath12k *ar, int vdev_id, const u8 *addr)
{
	struct ath12k_base *ab = ar->ab;
	struct ath12k_peer *peer;

	/* TODO: Any other peer specific DP cleanup */

	spin_lock_bh(&ab->base_lock);
	peer = ath12k_peer_find(ab, vdev_id, addr);
	if (!peer) {
		ath12k_warn(ab, "failed to lookup peer %pM on vdev %d\n",
			    addr, vdev_id);
		spin_unlock_bh(&ab->base_lock);
		return;
	}

	ath12k_dp_rx_peer_tid_cleanup(ar, peer);
	crypto_free_shash(peer->tfm_mmic);
	peer->dp_setup_done = false;
	spin_unlock_bh(&ab->base_lock);
}

int ath12k_dp_peer_setup(struct ath12k *ar, int vdev_id, const u8 *addr)
{
	struct ath12k_base *ab = ar->ab;
	struct ath12k_peer *peer;
	u32 reo_dest;
	int ret = 0, tid;

	/* NOTE: reo_dest ring id starts from 1 unlike mac_id which starts from 0 */
	reo_dest = ar->dp.mac_id + 1;
	ret = ath12k_wmi_set_peer_param(ar, addr, vdev_id,
					WMI_PEER_SET_DEFAULT_ROUTING,
					DP_RX_HASH_ENABLE | (reo_dest << 1));

	if (ret) {
		ath12k_warn(ab, "failed to set default routing %d peer :%pM vdev_id :%d\n",
			    ret, addr, vdev_id);
		return ret;
	}

	for (tid = 0; tid <= IEEE80211_NUM_TIDS; tid++) {
		ret = ath12k_dp_rx_peer_tid_setup(ar, addr, vdev_id, tid, 1, 0,
						  HAL_PN_TYPE_NONE);
		if (ret) {
			ath12k_warn(ab, "failed to setup rxd tid queue for tid %d: %d\n",
				    tid, ret);
			goto peer_clean;
		}
	}

	ret = ath12k_dp_rx_peer_frag_setup(ar, addr, vdev_id);
	if (ret) {
		ath12k_warn(ab, "failed to setup rx defrag context\n");
		goto peer_clean;
	}

	/* TODO: Setup other peer specific resource used in data path */

	return 0;

peer_clean:
	spin_lock_bh(&ab->base_lock);

	peer = ath12k_peer_find(ab, vdev_id, addr);
	if (!peer) {
		ath12k_warn(ab, "failed to find the peer to del rx tid\n");
		spin_unlock_bh(&ab->base_lock);
		return -ENOENT;
	}

	for (; tid >= 0; tid--)
		ath12k_dp_rx_peer_tid_delete(ar, peer, tid);

	spin_unlock_bh(&ab->base_lock);

	return ret;
}

void ath12k_dp_srng_cleanup(struct ath12k_base *ab, struct dp_srng *ring)
{
	if (!ring->vaddr_unaligned)
		return;

	dma_free_coherent(ab->dev, ring->size, ring->vaddr_unaligned,
			  ring->paddr_unaligned);

	ring->vaddr_unaligned = NULL;
}

static int ath12k_dp_srng_find_ring_in_mask(int ring_num, const u8 *grp_mask)
{
	int ext_group_num;
	u8 mask = 1 << ring_num;

	for (ext_group_num = 0; ext_group_num < ATH12K_EXT_IRQ_GRP_NUM_MAX;
	     ext_group_num++) {
		if (mask & grp_mask[ext_group_num])
			return ext_group_num;
	}

	return -ENOENT;
}

static int ath12k_dp_srng_calculate_msi_group(struct ath12k_base *ab,
					      enum hal_ring_type type, int ring_num)
{
	const u8 *grp_mask;

	switch (type) {
	case HAL_WBM2SW_RELEASE:
		if (ring_num == HAL_WBM2SW_REL_ERR_RING_NUM) {
			grp_mask = &ab->hw_params->ring_mask->rx_wbm_rel[0];
			ring_num = 0;
		} else {
			grp_mask = &ab->hw_params->ring_mask->tx[0];
		}
		break;
	case HAL_REO_EXCEPTION:
		grp_mask = &ab->hw_params->ring_mask->rx_err[0];
		break;
	case HAL_REO_DST:
		grp_mask = &ab->hw_params->ring_mask->rx[0];
		break;
	case HAL_REO_STATUS:
		grp_mask = &ab->hw_params->ring_mask->reo_status[0];
		break;
	case HAL_RXDMA_MONITOR_STATUS:
	case HAL_RXDMA_MONITOR_DST:
		grp_mask = &ab->hw_params->ring_mask->rx_mon_dest[0];
		break;
	case HAL_TX_MONITOR_DST:
		grp_mask = &ab->hw_params->ring_mask->tx_mon_dest[0];
		break;
	case HAL_RXDMA_BUF:
		grp_mask = &ab->hw_params->ring_mask->host2rxdma[0];
		break;
	case HAL_RXDMA_MONITOR_BUF:
	case HAL_TCL_DATA:
	case HAL_TCL_CMD:
	case HAL_REO_CMD:
	case HAL_SW2WBM_RELEASE:
	case HAL_WBM_IDLE_LINK:
	case HAL_TCL_STATUS:
	case HAL_REO_REINJECT:
	case HAL_CE_SRC:
	case HAL_CE_DST:
	case HAL_CE_DST_STATUS:
	default:
		return -ENOENT;
	}

	return ath12k_dp_srng_find_ring_in_mask(ring_num, grp_mask);
}

static void ath12k_dp_srng_msi_setup(struct ath12k_base *ab,
				     struct hal_srng_params *ring_params,
				     enum hal_ring_type type, int ring_num)
{
	int msi_group_number, msi_data_count;
	u32 msi_data_start, msi_irq_start, addr_lo, addr_hi;
	int ret;

	ret = ath12k_hif_get_user_msi_vector(ab, "DP",
					     &msi_data_count, &msi_data_start,
					     &msi_irq_start);
	if (ret)
		return;

	msi_group_number = ath12k_dp_srng_calculate_msi_group(ab, type,
							      ring_num);
	if (msi_group_number < 0) {
		ath12k_dbg(ab, ATH12K_DBG_PCI,
			   "ring not part of an ext_group; ring_type: %d,ring_num %d",
			   type, ring_num);
		ring_params->msi_addr = 0;
		ring_params->msi_data = 0;
		return;
	}

	if (msi_group_number > msi_data_count) {
		ath12k_dbg(ab, ATH12K_DBG_PCI,
			   "multiple msi_groups share one msi, msi_group_num %d",
			   msi_group_number);
	}

	ath12k_hif_get_msi_address(ab, &addr_lo, &addr_hi);

	ring_params->msi_addr = addr_lo;
	ring_params->msi_addr |= (dma_addr_t)(((uint64_t)addr_hi) << 32);
	ring_params->msi_data = (msi_group_number % msi_data_count)
		+ msi_data_start;
	ring_params->flags |= HAL_SRNG_FLAGS_MSI_INTR;
}

int ath12k_dp_srng_setup(struct ath12k_base *ab, struct dp_srng *ring,
			 enum hal_ring_type type, int ring_num,
			 int mac_id, int num_entries)
{
	struct hal_srng_params params = { 0 };
	int entry_sz = ath12k_hal_srng_get_entrysize(ab, type);
	int max_entries = ath12k_hal_srng_get_max_entries(ab, type);
	int ret;

	if (max_entries < 0 || entry_sz < 0)
		return -EINVAL;

	if (num_entries > max_entries)
		num_entries = max_entries;

	ring->size = (num_entries * entry_sz) + HAL_RING_BASE_ALIGN - 1;
	ring->vaddr_unaligned = dma_alloc_coherent(ab->dev, ring->size,
						   &ring->paddr_unaligned,
						   GFP_KERNEL);
	if (!ring->vaddr_unaligned)
		return -ENOMEM;

	ring->vaddr = PTR_ALIGN(ring->vaddr_unaligned, HAL_RING_BASE_ALIGN);
	ring->paddr = ring->paddr_unaligned + ((unsigned long)ring->vaddr -
		      (unsigned long)ring->vaddr_unaligned);

	params.ring_base_vaddr = ring->vaddr;
	params.ring_base_paddr = ring->paddr;
	params.num_entries = num_entries;
	ath12k_dp_srng_msi_setup(ab, &params, type, ring_num + mac_id);

	switch (type) {
	case HAL_REO_DST:
		params.intr_batch_cntr_thres_entries =
					HAL_SRNG_INT_BATCH_THRESHOLD_RX;
		params.intr_timer_thres_us = HAL_SRNG_INT_TIMER_THRESHOLD_RX;
		break;
	case HAL_RXDMA_BUF:
	case HAL_RXDMA_MONITOR_BUF:
	case HAL_RXDMA_MONITOR_STATUS:
		params.low_threshold = num_entries >> 3;
		params.flags |= HAL_SRNG_FLAGS_LOW_THRESH_INTR_EN;
		params.intr_batch_cntr_thres_entries = 0;
		params.intr_timer_thres_us = HAL_SRNG_INT_TIMER_THRESHOLD_RX;
		break;
	case HAL_TX_MONITOR_DST:
		params.low_threshold = DP_TX_MONITOR_BUF_SIZE_MAX >> 3;
		params.flags |= HAL_SRNG_FLAGS_LOW_THRESH_INTR_EN;
		params.intr_batch_cntr_thres_entries = 0;
		params.intr_timer_thres_us = HAL_SRNG_INT_TIMER_THRESHOLD_RX;
		break;
	case HAL_WBM2SW_RELEASE:
		if (ab->hw_params->hw_ops->dp_srng_is_tx_comp_ring(ring_num)) {
			params.intr_batch_cntr_thres_entries =
					HAL_SRNG_INT_BATCH_THRESHOLD_TX;
			params.intr_timer_thres_us =
					HAL_SRNG_INT_TIMER_THRESHOLD_TX;
			break;
		}
		/* follow through when ring_num != HAL_WBM2SW_REL_ERR_RING_NUM */
		fallthrough;
	case HAL_REO_EXCEPTION:
	case HAL_REO_REINJECT:
	case HAL_REO_CMD:
	case HAL_REO_STATUS:
	case HAL_TCL_DATA:
	case HAL_TCL_CMD:
	case HAL_TCL_STATUS:
	case HAL_WBM_IDLE_LINK:
	case HAL_SW2WBM_RELEASE:
	case HAL_RXDMA_DST:
	case HAL_RXDMA_MONITOR_DST:
	case HAL_RXDMA_MONITOR_DESC:
		params.intr_batch_cntr_thres_entries =
					HAL_SRNG_INT_BATCH_THRESHOLD_OTHER;
		params.intr_timer_thres_us = HAL_SRNG_INT_TIMER_THRESHOLD_OTHER;
		break;
	case HAL_RXDMA_DIR_BUF:
		break;
	default:
		ath12k_warn(ab, "Not a valid ring type in dp :%d\n", type);
		return -EINVAL;
	}

	ret = ath12k_hal_srng_setup(ab, type, ring_num, mac_id, &params);
	if (ret < 0) {
		ath12k_warn(ab, "failed to setup srng: %d ring_id %d\n",
			    ret, ring_num);
		return ret;
	}

	ring->ring_id = ret;

	return 0;
}

static
u32 ath12k_dp_tx_get_vdev_bank_config(struct ath12k_base *ab, struct ath12k_vif *arvif)
{
	u32 bank_config = 0;

	/* Only valid for raw frames with HW crypto enabled.
	 * With SW crypto, mac80211 sets key per packet
	 */
	if (arvif->tx_encap_type == HAL_TCL_ENCAP_TYPE_RAW &&
	    test_bit(ATH12K_FLAG_HW_CRYPTO_DISABLED, &ab->dev_flags))
		bank_config |=
			u32_encode_bits(ath12k_dp_tx_get_encrypt_type(arvif->key_cipher),
					HAL_TX_BANK_CONFIG_ENCRYPT_TYPE);

	bank_config |= u32_encode_bits(arvif->tx_encap_type,
					HAL_TX_BANK_CONFIG_ENCAP_TYPE);
	bank_config |= u32_encode_bits(0, HAL_TX_BANK_CONFIG_SRC_BUFFER_SWAP) |
			u32_encode_bits(0, HAL_TX_BANK_CONFIG_LINK_META_SWAP) |
			u32_encode_bits(0, HAL_TX_BANK_CONFIG_EPD);

	/* only valid if idx_lookup_override is not set in tcl_data_cmd */
	bank_config |= u32_encode_bits(0, HAL_TX_BANK_CONFIG_INDEX_LOOKUP_EN);

	bank_config |= u32_encode_bits(arvif->hal_addr_search_flags & HAL_TX_ADDRX_EN,
					HAL_TX_BANK_CONFIG_ADDRX_EN) |
			u32_encode_bits(!!(arvif->hal_addr_search_flags &
					HAL_TX_ADDRY_EN),
					HAL_TX_BANK_CONFIG_ADDRY_EN);

	bank_config |= u32_encode_bits(ieee80211_vif_is_mesh(arvif->vif) ? 3 : 0,
					HAL_TX_BANK_CONFIG_MESH_EN) |
			u32_encode_bits(arvif->vdev_id_check_en,
					HAL_TX_BANK_CONFIG_VDEV_ID_CHECK_EN);

	bank_config |= u32_encode_bits(0, HAL_TX_BANK_CONFIG_DSCP_TIP_MAP_ID);

	return bank_config;
}

static int ath12k_dp_tx_get_bank_profile(struct ath12k_base *ab, struct ath12k_vif *arvif,
					 struct ath12k_dp *dp)
{
	int bank_id = DP_INVALID_BANK_ID;
	int i;
	u32 bank_config;
	bool configure_register = false;

	/* convert vdev params into hal_tx_bank_config */
	bank_config = ath12k_dp_tx_get_vdev_bank_config(ab, arvif);

	spin_lock_bh(&dp->tx_bank_lock);
	/* TODO: implement using idr kernel framework*/
	for (i = 0; i < dp->num_bank_profiles; i++) {
		if (dp->bank_profiles[i].is_configured &&
		    (dp->bank_profiles[i].bank_config ^ bank_config) == 0) {
			bank_id = i;
			goto inc_ref_and_return;
		}
		if (!dp->bank_profiles[i].is_configured ||
		    !dp->bank_profiles[i].num_users) {
			bank_id = i;
			goto configure_and_return;
		}
	}

	if (bank_id == DP_INVALID_BANK_ID) {
		spin_unlock_bh(&dp->tx_bank_lock);
		ath12k_err(ab, "unable to find TX bank!");
		return bank_id;
	}

configure_and_return:
	dp->bank_profiles[bank_id].is_configured = true;
	dp->bank_profiles[bank_id].bank_config = bank_config;
	configure_register = true;
inc_ref_and_return:
	dp->bank_profiles[bank_id].num_users++;
	spin_unlock_bh(&dp->tx_bank_lock);

	if (configure_register)
		ath12k_hal_tx_configure_bank_register(ab, bank_config, bank_id);

	ath12k_dbg(ab, ATH12K_DBG_DP_HTT, "dp_htt tcl bank_id %d input 0x%x match 0x%x num_users %u",
		   bank_id, bank_config, dp->bank_profiles[bank_id].bank_config,
		   dp->bank_profiles[bank_id].num_users);

	return bank_id;
}

void ath12k_dp_tx_put_bank_profile(struct ath12k_dp *dp, u8 bank_id)
{
	spin_lock_bh(&dp->tx_bank_lock);
	dp->bank_profiles[bank_id].num_users--;
	spin_unlock_bh(&dp->tx_bank_lock);
}

static void ath12k_dp_deinit_bank_profiles(struct ath12k_base *ab)
{
	struct ath12k_dp *dp = &ab->dp;

	kfree(dp->bank_profiles);
	dp->bank_profiles = NULL;
}

static int ath12k_dp_init_bank_profiles(struct ath12k_base *ab)
{
	struct ath12k_dp *dp = &ab->dp;
	u32 num_tcl_banks = ab->hw_params->num_tcl_banks;
	int i;

	dp->num_bank_profiles = num_tcl_banks;
	dp->bank_profiles = kmalloc_array(num_tcl_banks,
					  sizeof(struct ath12k_dp_tx_bank_profile),
					  GFP_KERNEL);
	if (!dp->bank_profiles)
		return -ENOMEM;

	spin_lock_init(&dp->tx_bank_lock);

	for (i = 0; i < num_tcl_banks; i++) {
		dp->bank_profiles[i].is_configured = false;
		dp->bank_profiles[i].num_users = 0;
	}

	return 0;
}

static void ath12k_dp_srng_common_cleanup(struct ath12k_base *ab)
{
	struct ath12k_dp *dp = &ab->dp;
	int i;

	ath12k_dp_srng_cleanup(ab, &dp->reo_status_ring);
	ath12k_dp_srng_cleanup(ab, &dp->reo_cmd_ring);
	ath12k_dp_srng_cleanup(ab, &dp->reo_except_ring);
	ath12k_dp_srng_cleanup(ab, &dp->rx_rel_ring);
	ath12k_dp_srng_cleanup(ab, &dp->reo_reinject_ring);
	for (i = 0; i < ab->hw_params->max_tx_ring; i++) {
		ath12k_dp_srng_cleanup(ab, &dp->tx_ring[i].tcl_comp_ring);
		ath12k_dp_srng_cleanup(ab, &dp->tx_ring[i].tcl_data_ring);
	}
	ath12k_dp_srng_cleanup(ab, &dp->tcl_status_ring);
	ath12k_dp_srng_cleanup(ab, &dp->tcl_cmd_ring);
	ath12k_dp_srng_cleanup(ab, &dp->wbm_desc_rel_ring);
}

static int ath12k_dp_srng_common_setup(struct ath12k_base *ab)
{
	struct ath12k_dp *dp = &ab->dp;
	const struct ath12k_hal_tcl_to_wbm_rbm_map *map;
	struct hal_srng *srng;
	int i, ret, tx_comp_ring_num;
	u32 ring_hash_map;

	ret = ath12k_dp_srng_setup(ab, &dp->wbm_desc_rel_ring,
				   HAL_SW2WBM_RELEASE, 0, 0,
				   DP_WBM_RELEASE_RING_SIZE);
	if (ret) {
		ath12k_warn(ab, "failed to set up wbm2sw_release ring :%d\n",
			    ret);
		goto err;
	}

	ret = ath12k_dp_srng_setup(ab, &dp->tcl_cmd_ring, HAL_TCL_CMD, 0, 0,
				   DP_TCL_CMD_RING_SIZE);
	if (ret) {
		ath12k_warn(ab, "failed to set up tcl_cmd ring :%d\n", ret);
		goto err;
	}

	ret = ath12k_dp_srng_setup(ab, &dp->tcl_status_ring, HAL_TCL_STATUS,
				   0, 0, DP_TCL_STATUS_RING_SIZE);
	if (ret) {
		ath12k_warn(ab, "failed to set up tcl_status ring :%d\n", ret);
		goto err;
	}

	for (i = 0; i < ab->hw_params->max_tx_ring; i++) {
		map = ab->hw_params->hal_ops->tcl_to_wbm_rbm_map;
		tx_comp_ring_num = map[i].wbm_ring_num;

		ret = ath12k_dp_srng_setup(ab, &dp->tx_ring[i].tcl_data_ring,
					   HAL_TCL_DATA, i, 0,
					   DP_TCL_DATA_RING_SIZE);
		if (ret) {
			ath12k_warn(ab, "failed to set up tcl_data ring (%d) :%d\n",
				    i, ret);
			goto err;
		}

		ret = ath12k_dp_srng_setup(ab, &dp->tx_ring[i].tcl_comp_ring,
					   HAL_WBM2SW_RELEASE, tx_comp_ring_num, 0,
					   DP_TX_COMP_RING_SIZE);
		if (ret) {
			ath12k_warn(ab, "failed to set up tcl_comp ring (%d) :%d\n",
				    tx_comp_ring_num, ret);
			goto err;
		}
	}

	ret = ath12k_dp_srng_setup(ab, &dp->reo_reinject_ring, HAL_REO_REINJECT,
				   0, 0, DP_REO_REINJECT_RING_SIZE);
	if (ret) {
		ath12k_warn(ab, "failed to set up reo_reinject ring :%d\n",
			    ret);
		goto err;
	}

	ret = ath12k_dp_srng_setup(ab, &dp->rx_rel_ring, HAL_WBM2SW_RELEASE,
				   HAL_WBM2SW_REL_ERR_RING_NUM, 0,
				   DP_RX_RELEASE_RING_SIZE);
	if (ret) {
		ath12k_warn(ab, "failed to set up rx_rel ring :%d\n", ret);
		goto err;
	}

	ret = ath12k_dp_srng_setup(ab, &dp->reo_except_ring, HAL_REO_EXCEPTION,
				   0, 0, DP_REO_EXCEPTION_RING_SIZE);
	if (ret) {
		ath12k_warn(ab, "failed to set up reo_exception ring :%d\n",
			    ret);
		goto err;
	}

	ret = ath12k_dp_srng_setup(ab, &dp->reo_cmd_ring, HAL_REO_CMD,
				   0, 0, DP_REO_CMD_RING_SIZE);
	if (ret) {
		ath12k_warn(ab, "failed to set up reo_cmd ring :%d\n", ret);
		goto err;
	}

	srng = &ab->hal.srng_list[dp->reo_cmd_ring.ring_id];
	ath12k_hal_reo_init_cmd_ring(ab, srng);

	ret = ath12k_dp_srng_setup(ab, &dp->reo_status_ring, HAL_REO_STATUS,
				   0, 0, DP_REO_STATUS_RING_SIZE);
	if (ret) {
		ath12k_warn(ab, "failed to set up reo_status ring :%d\n", ret);
		goto err;
	}

	/* When hash based routing of rx packet is enabled, 32 entries to map
	 * the hash values to the ring will be configured. Each hash entry uses
	 * four bits to map to a particular ring. The ring mapping will be
	 * 0:TCL, 1:SW1, 2:SW2, 3:SW3, 4:SW4, 5:Release, 6:FW and 7:SW5
	 * 8:SW6, 9:SW7, 10:SW8, 11:Not used.
	 */
	ring_hash_map = HAL_HASH_ROUTING_RING_SW1 |
			HAL_HASH_ROUTING_RING_SW2 << 4 |
			HAL_HASH_ROUTING_RING_SW3 << 8 |
			HAL_HASH_ROUTING_RING_SW4 << 12 |
			HAL_HASH_ROUTING_RING_SW1 << 16 |
			HAL_HASH_ROUTING_RING_SW2 << 20 |
			HAL_HASH_ROUTING_RING_SW3 << 24 |
			HAL_HASH_ROUTING_RING_SW4 << 28;

	ath12k_hal_reo_hw_setup(ab, ring_hash_map);

	return 0;

err:
	ath12k_dp_srng_common_cleanup(ab);

	return ret;
}

static void ath12k_dp_scatter_idle_link_desc_cleanup(struct ath12k_base *ab)
{
	struct ath12k_dp *dp = &ab->dp;
	struct hal_wbm_idle_scatter_list *slist = dp->scatter_list;
	int i;

	for (i = 0; i < DP_IDLE_SCATTER_BUFS_MAX; i++) {
		if (!slist[i].vaddr)
			continue;

		dma_free_coherent(ab->dev, HAL_WBM_IDLE_SCATTER_BUF_SIZE_MAX,
				  slist[i].vaddr, slist[i].paddr);
		slist[i].vaddr = NULL;
	}
}

static int ath12k_dp_scatter_idle_link_desc_setup(struct ath12k_base *ab,
						  int size,
						  u32 n_link_desc_bank,
						  u32 n_link_desc,
						  u32 last_bank_sz)
{
	struct ath12k_dp *dp = &ab->dp;
	struct dp_link_desc_bank *link_desc_banks = dp->link_desc_banks;
	struct hal_wbm_idle_scatter_list *slist = dp->scatter_list;
	u32 n_entries_per_buf;
	int num_scatter_buf, scatter_idx;
	struct hal_wbm_link_desc *scatter_buf;
	int align_bytes, n_entries;
	dma_addr_t paddr;
	int rem_entries;
	int i;
	int ret = 0;
	u32 end_offset, cookie;

	n_entries_per_buf = HAL_WBM_IDLE_SCATTER_BUF_SIZE /
		ath12k_hal_srng_get_entrysize(ab, HAL_WBM_IDLE_LINK);
	num_scatter_buf = DIV_ROUND_UP(size, HAL_WBM_IDLE_SCATTER_BUF_SIZE);

	if (num_scatter_buf > DP_IDLE_SCATTER_BUFS_MAX)
		return -EINVAL;

	for (i = 0; i < num_scatter_buf; i++) {
		slist[i].vaddr = dma_alloc_coherent(ab->dev,
						    HAL_WBM_IDLE_SCATTER_BUF_SIZE_MAX,
						    &slist[i].paddr, GFP_KERNEL);
		if (!slist[i].vaddr) {
			ret = -ENOMEM;
			goto err;
		}
	}

	scatter_idx = 0;
	scatter_buf = slist[scatter_idx].vaddr;
	rem_entries = n_entries_per_buf;

	for (i = 0; i < n_link_desc_bank; i++) {
		align_bytes = link_desc_banks[i].vaddr -
			      link_desc_banks[i].vaddr_unaligned;
		n_entries = (DP_LINK_DESC_ALLOC_SIZE_THRESH - align_bytes) /
			     HAL_LINK_DESC_SIZE;
		paddr = link_desc_banks[i].paddr;
		while (n_entries) {
			cookie = DP_LINK_DESC_COOKIE_SET(n_entries, i);
			ath12k_hal_set_link_desc_addr(scatter_buf, cookie, paddr);
			n_entries--;
			paddr += HAL_LINK_DESC_SIZE;
			if (rem_entries) {
				rem_entries--;
				scatter_buf++;
				continue;
			}

			rem_entries = n_entries_per_buf;
			scatter_idx++;
			scatter_buf = slist[scatter_idx].vaddr;
		}
	}

	end_offset = (scatter_buf - slist[scatter_idx].vaddr) *
		     sizeof(struct hal_wbm_link_desc);
	ath12k_hal_setup_link_idle_list(ab, slist, num_scatter_buf,
					n_link_desc, end_offset);

	return 0;

err:
	ath12k_dp_scatter_idle_link_desc_cleanup(ab);

	return ret;
}

static void
ath12k_dp_link_desc_bank_free(struct ath12k_base *ab,
			      struct dp_link_desc_bank *link_desc_banks)
{
	int i;

	for (i = 0; i < DP_LINK_DESC_BANKS_MAX; i++) {
		if (link_desc_banks[i].vaddr_unaligned) {
			dma_free_coherent(ab->dev,
					  link_desc_banks[i].size,
					  link_desc_banks[i].vaddr_unaligned,
					  link_desc_banks[i].paddr_unaligned);
			link_desc_banks[i].vaddr_unaligned = NULL;
		}
	}
}

static int ath12k_dp_link_desc_bank_alloc(struct ath12k_base *ab,
					  struct dp_link_desc_bank *desc_bank,
					  int n_link_desc_bank,
					  int last_bank_sz)
{
	struct ath12k_dp *dp = &ab->dp;
	int i;
	int ret = 0;
	int desc_sz = DP_LINK_DESC_ALLOC_SIZE_THRESH;

	for (i = 0; i < n_link_desc_bank; i++) {
		if (i == (n_link_desc_bank - 1) && last_bank_sz)
			desc_sz = last_bank_sz;

		desc_bank[i].vaddr_unaligned =
					dma_alloc_coherent(ab->dev, desc_sz,
							   &desc_bank[i].paddr_unaligned,
							   GFP_KERNEL);
		if (!desc_bank[i].vaddr_unaligned) {
			ret = -ENOMEM;
			goto err;
		}

		desc_bank[i].vaddr = PTR_ALIGN(desc_bank[i].vaddr_unaligned,
					       HAL_LINK_DESC_ALIGN);
		desc_bank[i].paddr = desc_bank[i].paddr_unaligned +
				     ((unsigned long)desc_bank[i].vaddr -
				      (unsigned long)desc_bank[i].vaddr_unaligned);
		desc_bank[i].size = desc_sz;
	}

	return 0;

err:
	ath12k_dp_link_desc_bank_free(ab, dp->link_desc_banks);

	return ret;
}

void ath12k_dp_link_desc_cleanup(struct ath12k_base *ab,
				 struct dp_link_desc_bank *desc_bank,
				 u32 ring_type, struct dp_srng *ring)
{
	ath12k_dp_link_desc_bank_free(ab, desc_bank);

	if (ring_type != HAL_RXDMA_MONITOR_DESC) {
		ath12k_dp_srng_cleanup(ab, ring);
		ath12k_dp_scatter_idle_link_desc_cleanup(ab);
	}
}

static int ath12k_wbm_idle_ring_setup(struct ath12k_base *ab, u32 *n_link_desc)
{
	struct ath12k_dp *dp = &ab->dp;
	u32 n_mpdu_link_desc, n_mpdu_queue_desc;
	u32 n_tx_msdu_link_desc, n_rx_msdu_link_desc;
	int ret = 0;

	n_mpdu_link_desc = (DP_NUM_TIDS_MAX * DP_AVG_MPDUS_PER_TID_MAX) /
			   HAL_NUM_MPDUS_PER_LINK_DESC;

	n_mpdu_queue_desc = n_mpdu_link_desc /
			    HAL_NUM_MPDU_LINKS_PER_QUEUE_DESC;

	n_tx_msdu_link_desc = (DP_NUM_TIDS_MAX * DP_AVG_FLOWS_PER_TID *
			       DP_AVG_MSDUS_PER_FLOW) /
			      HAL_NUM_TX_MSDUS_PER_LINK_DESC;

	n_rx_msdu_link_desc = (DP_NUM_TIDS_MAX * DP_AVG_MPDUS_PER_TID_MAX *
			       DP_AVG_MSDUS_PER_MPDU) /
			      HAL_NUM_RX_MSDUS_PER_LINK_DESC;

	*n_link_desc = n_mpdu_link_desc + n_mpdu_queue_desc +
		      n_tx_msdu_link_desc + n_rx_msdu_link_desc;

	if (*n_link_desc & (*n_link_desc - 1))
		*n_link_desc = 1 << fls(*n_link_desc);

	ret = ath12k_dp_srng_setup(ab, &dp->wbm_idle_ring,
				   HAL_WBM_IDLE_LINK, 0, 0, *n_link_desc);
	if (ret) {
		ath12k_warn(ab, "failed to setup wbm_idle_ring: %d\n", ret);
		return ret;
	}
	return ret;
}

int ath12k_dp_link_desc_setup(struct ath12k_base *ab,
			      struct dp_link_desc_bank *link_desc_banks,
			      u32 ring_type, struct hal_srng *srng,
			      u32 n_link_desc)
{
	u32 tot_mem_sz;
	u32 n_link_desc_bank, last_bank_sz;
	u32 entry_sz, align_bytes, n_entries;
	struct hal_wbm_link_desc *desc;
	u32 paddr;
	int i, ret;
	u32 cookie;

	tot_mem_sz = n_link_desc * HAL_LINK_DESC_SIZE;
	tot_mem_sz += HAL_LINK_DESC_ALIGN;

	if (tot_mem_sz <= DP_LINK_DESC_ALLOC_SIZE_THRESH) {
		n_link_desc_bank = 1;
		last_bank_sz = tot_mem_sz;
	} else {
		n_link_desc_bank = tot_mem_sz /
				   (DP_LINK_DESC_ALLOC_SIZE_THRESH -
				    HAL_LINK_DESC_ALIGN);
		last_bank_sz = tot_mem_sz %
			       (DP_LINK_DESC_ALLOC_SIZE_THRESH -
				HAL_LINK_DESC_ALIGN);

		if (last_bank_sz)
			n_link_desc_bank += 1;
	}

	if (n_link_desc_bank > DP_LINK_DESC_BANKS_MAX)
		return -EINVAL;

	ret = ath12k_dp_link_desc_bank_alloc(ab, link_desc_banks,
					     n_link_desc_bank, last_bank_sz);
	if (ret)
		return ret;

	/* Setup link desc idle list for HW internal usage */
	entry_sz = ath12k_hal_srng_get_entrysize(ab, ring_type);
	tot_mem_sz = entry_sz * n_link_desc;

	/* Setup scatter desc list when the total memory requirement is more */
	if (tot_mem_sz > DP_LINK_DESC_ALLOC_SIZE_THRESH &&
	    ring_type != HAL_RXDMA_MONITOR_DESC) {
		ret = ath12k_dp_scatter_idle_link_desc_setup(ab, tot_mem_sz,
							     n_link_desc_bank,
							     n_link_desc,
							     last_bank_sz);
		if (ret) {
			ath12k_warn(ab, "failed to setup scatting idle list descriptor :%d\n",
				    ret);
			goto fail_desc_bank_free;
		}

		return 0;
	}

	spin_lock_bh(&srng->lock);

	ath12k_hal_srng_access_begin(ab, srng);

	for (i = 0; i < n_link_desc_bank; i++) {
		align_bytes = link_desc_banks[i].vaddr -
			      link_desc_banks[i].vaddr_unaligned;
		n_entries = (link_desc_banks[i].size - align_bytes) /
			    HAL_LINK_DESC_SIZE;
		paddr = link_desc_banks[i].paddr;
		while (n_entries &&
		       (desc = ath12k_hal_srng_src_get_next_entry(ab, srng))) {
			cookie = DP_LINK_DESC_COOKIE_SET(n_entries, i);
			ath12k_hal_set_link_desc_addr(desc,
						      cookie, paddr);
			n_entries--;
			paddr += HAL_LINK_DESC_SIZE;
		}
	}

	ath12k_hal_srng_access_end(ab, srng);

	spin_unlock_bh(&srng->lock);

	return 0;

fail_desc_bank_free:
	ath12k_dp_link_desc_bank_free(ab, link_desc_banks);

	return ret;
}

int ath12k_dp_service_srng(struct ath12k_base *ab,
			   struct ath12k_ext_irq_grp *irq_grp,
			   int budget)
{
	struct napi_struct *napi = &irq_grp->napi;
	int grp_id = irq_grp->grp_id;
	int work_done = 0;
	int i = 0, j;
	int tot_work_done = 0;
	enum dp_monitor_mode monitor_mode;
	u8 ring_mask;

	while (i < ab->hw_params->max_tx_ring) {
		if (ab->hw_params->ring_mask->tx[grp_id] &
			BIT(ab->hw_params->hal_ops->tcl_to_wbm_rbm_map[i].wbm_ring_num))
			ath12k_dp_tx_completion_handler(ab, i);
		i++;
	}

	if (ab->hw_params->ring_mask->rx_err[grp_id]) {
		work_done = ath12k_dp_rx_process_err(ab, napi, budget);
		budget -= work_done;
		tot_work_done += work_done;
		if (budget <= 0)
			goto done;
	}

	if (ab->hw_params->ring_mask->rx_wbm_rel[grp_id]) {
		work_done = ath12k_dp_rx_process_wbm_err(ab,
							 napi,
							 budget);
		budget -= work_done;
		tot_work_done += work_done;

		if (budget <= 0)
			goto done;
	}

	if (ab->hw_params->ring_mask->rx[grp_id]) {
		i = fls(ab->hw_params->ring_mask->rx[grp_id]) - 1;
		work_done = ath12k_dp_rx_process(ab, i, napi,
						 budget);
		budget -= work_done;
		tot_work_done += work_done;
		if (budget <= 0)
			goto done;
	}

	if (ab->hw_params->ring_mask->rx_mon_dest[grp_id]) {
		monitor_mode = ATH12K_DP_RX_MONITOR_MODE;
		ring_mask = ab->hw_params->ring_mask->rx_mon_dest[grp_id];
		for (i = 0; i < ab->num_radios; i++) {
			for (j = 0; j < ab->hw_params->num_rxmda_per_pdev; j++) {
				int id = i * ab->hw_params->num_rxmda_per_pdev + j;

				if (ring_mask & BIT(id)) {
					work_done =
					ath12k_dp_mon_process_ring(ab, id, napi, budget,
								   monitor_mode);
					budget -= work_done;
					tot_work_done += work_done;

					if (budget <= 0)
						goto done;
				}
			}
		}
	}

	if (ab->hw_params->ring_mask->tx_mon_dest[grp_id]) {
		monitor_mode = ATH12K_DP_TX_MONITOR_MODE;
		ring_mask = ab->hw_params->ring_mask->tx_mon_dest[grp_id];
		for (i = 0; i < ab->num_radios; i++) {
			for (j = 0; j < ab->hw_params->num_rxmda_per_pdev; j++) {
				int id = i * ab->hw_params->num_rxmda_per_pdev + j;

				if (ring_mask & BIT(id)) {
					work_done =
					ath12k_dp_mon_process_ring(ab, id, napi, budget,
								   monitor_mode);
					budget -= work_done;
					tot_work_done += work_done;

					if (budget <= 0)
						goto done;
				}
			}
		}
	}

	if (ab->hw_params->ring_mask->reo_status[grp_id])
		ath12k_dp_rx_process_reo_status(ab);

	if (ab->hw_params->ring_mask->host2rxdma[grp_id]) {
		struct ath12k_dp *dp = &ab->dp;
		struct dp_rxdma_ring *rx_ring = &dp->rx_refill_buf_ring;

		ath12k_dp_rx_bufs_replenish(ab, 0, rx_ring, 0,
					    ab->hw_params->hal_params->rx_buf_rbm,
					    true);
	}

	/* TODO: Implement handler for other interrupts */

done:
	return tot_work_done;
}

void ath12k_dp_pdev_free(struct ath12k_base *ab)
{
	int i;

	del_timer_sync(&ab->mon_reap_timer);

	for (i = 0; i < ab->num_radios; i++)
		ath12k_dp_rx_pdev_free(ab, i);
}

void ath12k_dp_pdev_pre_alloc(struct ath12k_base *ab)
{
	struct ath12k *ar;
	struct ath12k_pdev_dp *dp;
	int i;

	for (i = 0; i <  ab->num_radios; i++) {
		ar = ab->pdevs[i].ar;
		dp = &ar->dp;
		dp->mac_id = i;
		atomic_set(&dp->num_tx_pending, 0);
		init_waitqueue_head(&dp->tx_empty_waitq);

		/* TODO: Add any RXDMA setup required per pdev */
	}
}

static void ath12k_dp_service_mon_ring(struct timer_list *t)
{
	struct ath12k_base *ab = from_timer(ab, t, mon_reap_timer);
	int i;

	for (i = 0; i < ab->hw_params->num_rxmda_per_pdev; i++)
		ath12k_dp_mon_process_ring(ab, i, NULL, DP_MON_SERVICE_BUDGET,
					   ATH12K_DP_RX_MONITOR_MODE);

	mod_timer(&ab->mon_reap_timer, jiffies +
		  msecs_to_jiffies(ATH12K_MON_TIMER_INTERVAL));
}

static void ath12k_dp_mon_reap_timer_init(struct ath12k_base *ab)
{
	if (ab->hw_params->rxdma1_enable)
		return;

	timer_setup(&ab->mon_reap_timer, ath12k_dp_service_mon_ring, 0);
}

int ath12k_dp_pdev_alloc(struct ath12k_base *ab)
{
	struct ath12k *ar;
	int ret;
	int i;

	ret = ath12k_dp_rx_htt_setup(ab);
	if (ret)
		goto out;

	ath12k_dp_mon_reap_timer_init(ab);

	/* TODO: Per-pdev rx ring unlike tx ring which is mapped to different AC's */
	for (i = 0; i < ab->num_radios; i++) {
		ar = ab->pdevs[i].ar;
		ret = ath12k_dp_rx_pdev_alloc(ab, i);
		if (ret) {
			ath12k_warn(ab, "failed to allocate pdev rx for pdev_id :%d\n",
				    i);
			goto err;
		}
		ret = ath12k_dp_rx_pdev_mon_attach(ar);
		if (ret) {
			ath12k_warn(ab, "failed to initialize mon pdev %d\n", i);
			goto err;
		}
	}

	return 0;
err:
	ath12k_dp_pdev_free(ab);
out:
	return ret;
}

int ath12k_dp_htt_connect(struct ath12k_dp *dp)
{
	struct ath12k_htc_svc_conn_req conn_req = {0};
	struct ath12k_htc_svc_conn_resp conn_resp = {0};
	int status;

	conn_req.ep_ops.ep_tx_complete = ath12k_dp_htt_htc_tx_complete;
	conn_req.ep_ops.ep_rx_complete = ath12k_dp_htt_htc_t2h_msg_handler;

	/* connect to control service */
	conn_req.service_id = ATH12K_HTC_SVC_ID_HTT_DATA_MSG;

	status = ath12k_htc_connect_service(&dp->ab->htc, &conn_req,
					    &conn_resp);

	if (status)
		return status;

	dp->eid = conn_resp.eid;

	return 0;
}

static void ath12k_dp_update_vdev_search(struct ath12k_vif *arvif)
{
	switch (arvif->vdev_type) {
	case WMI_VDEV_TYPE_STA:
		/* TODO: Verify the search type and flags since ast hash
		 * is not part of peer mapv3
		 */
		arvif->hal_addr_search_flags = HAL_TX_ADDRY_EN;
		arvif->search_type = HAL_TX_ADDR_SEARCH_DEFAULT;
		break;
	case WMI_VDEV_TYPE_AP:
	case WMI_VDEV_TYPE_IBSS:
		arvif->hal_addr_search_flags = HAL_TX_ADDRX_EN;
		arvif->search_type = HAL_TX_ADDR_SEARCH_DEFAULT;
		break;
	case WMI_VDEV_TYPE_MONITOR:
	default:
		return;
	}
}

void ath12k_dp_vdev_tx_attach(struct ath12k *ar, struct ath12k_vif *arvif)
{
	struct ath12k_base *ab = ar->ab;

	arvif->tcl_metadata |= u32_encode_bits(1, HTT_TCL_META_DATA_TYPE) |
			       u32_encode_bits(arvif->vdev_id,
					       HTT_TCL_META_DATA_VDEV_ID) |
			       u32_encode_bits(ar->pdev->pdev_id,
					       HTT_TCL_META_DATA_PDEV_ID);

	/* set HTT extension valid bit to 0 by default */
	arvif->tcl_metadata &= ~HTT_TCL_META_DATA_VALID_HTT;

	ath12k_dp_update_vdev_search(arvif);
	arvif->vdev_id_check_en = true;
	arvif->bank_id = ath12k_dp_tx_get_bank_profile(ab, arvif, &ab->dp);

	/* TODO: error path for bank id failure */
	if (arvif->bank_id == DP_INVALID_BANK_ID) {
		ath12k_err(ar->ab, "Failed to initialize DP TX Banks");
		return;
	}
}

static void ath12k_dp_cc_cleanup(struct ath12k_base *ab)
{
	struct ath12k_rx_desc_info *desc_info, *tmp;
	struct ath12k_tx_desc_info *tx_desc_info, *tmp1;
	struct ath12k_dp *dp = &ab->dp;
	struct sk_buff *skb;
	int i;
	u32 pool_id, tx_spt_page;

	if (!dp->spt_info)
		return;

	/* RX Descriptor cleanup */
	spin_lock_bh(&dp->rx_desc_lock);

	list_for_each_entry_safe(desc_info, tmp, &dp->rx_desc_used_list, list) {
		list_del(&desc_info->list);
		skb = desc_info->skb;

		if (!skb)
			continue;

		dma_unmap_single(ab->dev, ATH12K_SKB_RXCB(skb)->paddr,
				 skb->len + skb_tailroom(skb), DMA_FROM_DEVICE);
		dev_kfree_skb_any(skb);
	}

	for (i = 0; i < ATH12K_NUM_RX_SPT_PAGES; i++) {
		if (!dp->spt_info->rxbaddr[i])
			continue;

		kfree(dp->spt_info->rxbaddr[i]);
		dp->spt_info->rxbaddr[i] = NULL;
	}

	spin_unlock_bh(&dp->rx_desc_lock);

	/* TX Descriptor cleanup */
	for (i = 0; i < ATH12K_HW_MAX_QUEUES; i++) {
		spin_lock_bh(&dp->tx_desc_lock[i]);

		list_for_each_entry_safe(tx_desc_info, tmp1, &dp->tx_desc_used_list[i],
					 list) {
			list_del(&tx_desc_info->list);
			skb = tx_desc_info->skb;

			if (!skb)
				continue;

			dma_unmap_single(ab->dev, ATH12K_SKB_CB(skb)->paddr,
					 skb->len, DMA_TO_DEVICE);
			dev_kfree_skb_any(skb);
		}

		spin_unlock_bh(&dp->tx_desc_lock[i]);
	}

	for (pool_id = 0; pool_id < ATH12K_HW_MAX_QUEUES; pool_id++) {
		spin_lock_bh(&dp->tx_desc_lock[pool_id]);

		for (i = 0; i < ATH12K_TX_SPT_PAGES_PER_POOL; i++) {
			tx_spt_page = i + pool_id * ATH12K_TX_SPT_PAGES_PER_POOL;
			if (!dp->spt_info->txbaddr[tx_spt_page])
				continue;

			kfree(dp->spt_info->txbaddr[tx_spt_page]);
			dp->spt_info->txbaddr[tx_spt_page] = NULL;
		}

		spin_unlock_bh(&dp->tx_desc_lock[pool_id]);
	}

	/* unmap SPT pages */
	for (i = 0; i < dp->num_spt_pages; i++) {
		if (!dp->spt_info[i].vaddr)
			continue;

		dma_free_coherent(ab->dev, ATH12K_PAGE_SIZE,
				  dp->spt_info[i].vaddr, dp->spt_info[i].paddr);
		dp->spt_info[i].vaddr = NULL;
	}

	kfree(dp->spt_info);
}

static void ath12k_dp_reoq_lut_cleanup(struct ath12k_base *ab)
{
	struct ath12k_dp *dp = &ab->dp;

	if (!ab->hw_params->reoq_lut_support)
		return;

	if (!dp->reoq_lut.vaddr)
		return;

	dma_free_coherent(ab->dev, DP_REOQ_LUT_SIZE,
			  dp->reoq_lut.vaddr, dp->reoq_lut.paddr);
	dp->reoq_lut.vaddr = NULL;

	ath12k_hif_write32(ab,
			   HAL_SEQ_WCSS_UMAC_REO_REG + HAL_REO1_QDESC_LUT_BASE0(ab), 0);
}

void ath12k_dp_free(struct ath12k_base *ab)
{
	struct ath12k_dp *dp = &ab->dp;
	int i;

	ath12k_dp_link_desc_cleanup(ab, dp->link_desc_banks,
				    HAL_WBM_IDLE_LINK, &dp->wbm_idle_ring);

	ath12k_dp_cc_cleanup(ab);
	ath12k_dp_reoq_lut_cleanup(ab);
	ath12k_dp_deinit_bank_profiles(ab);
	ath12k_dp_srng_common_cleanup(ab);

	ath12k_dp_rx_reo_cmd_list_cleanup(ab);

	for (i = 0; i < ab->hw_params->max_tx_ring; i++)
		kfree(dp->tx_ring[i].tx_status);

	ath12k_dp_rx_free(ab);
	/* Deinit any SOC level resource */
}

void ath12k_dp_cc_config(struct ath12k_base *ab)
{
	u32 cmem_base = ab->qmi.dev_mem[ATH12K_QMI_DEVMEM_CMEM_INDEX].start;
	u32 reo_base = HAL_SEQ_WCSS_UMAC_REO_REG;
	u32 wbm_base = HAL_SEQ_WCSS_UMAC_WBM_REG;
	u32 val = 0;

	ath12k_hif_write32(ab, reo_base + HAL_REO1_SW_COOKIE_CFG0(ab), cmem_base);

	val |= u32_encode_bits(ATH12K_CMEM_ADDR_MSB,
			       HAL_REO1_SW_COOKIE_CFG_CMEM_BASE_ADDR_MSB) |
		u32_encode_bits(ATH12K_CC_PPT_MSB,
				HAL_REO1_SW_COOKIE_CFG_COOKIE_PPT_MSB) |
		u32_encode_bits(ATH12K_CC_SPT_MSB,
				HAL_REO1_SW_COOKIE_CFG_COOKIE_SPT_MSB) |
		u32_encode_bits(1, HAL_REO1_SW_COOKIE_CFG_ALIGN) |
		u32_encode_bits(1, HAL_REO1_SW_COOKIE_CFG_ENABLE) |
		u32_encode_bits(1, HAL_REO1_SW_COOKIE_CFG_GLOBAL_ENABLE);

	ath12k_hif_write32(ab, reo_base + HAL_REO1_SW_COOKIE_CFG1(ab), val);

	/* Enable HW CC for WBM */
	ath12k_hif_write32(ab, wbm_base + HAL_WBM_SW_COOKIE_CFG0, cmem_base);

	val = u32_encode_bits(ATH12K_CMEM_ADDR_MSB,
			      HAL_WBM_SW_COOKIE_CFG_CMEM_BASE_ADDR_MSB) |
		u32_encode_bits(ATH12K_CC_PPT_MSB,
				HAL_WBM_SW_COOKIE_CFG_COOKIE_PPT_MSB) |
		u32_encode_bits(ATH12K_CC_SPT_MSB,
				HAL_WBM_SW_COOKIE_CFG_COOKIE_SPT_MSB) |
		u32_encode_bits(1, HAL_WBM_SW_COOKIE_CFG_ALIGN);

	ath12k_hif_write32(ab, wbm_base + HAL_WBM_SW_COOKIE_CFG1, val);

	/* Enable conversion complete indication */
	val = ath12k_hif_read32(ab, wbm_base + HAL_WBM_SW_COOKIE_CFG2);
	val |= u32_encode_bits(1, HAL_WBM_SW_COOKIE_CFG_RELEASE_PATH_EN) |
		u32_encode_bits(1, HAL_WBM_SW_COOKIE_CFG_ERR_PATH_EN) |
		u32_encode_bits(1, HAL_WBM_SW_COOKIE_CFG_CONV_IND_EN);

	ath12k_hif_write32(ab, wbm_base + HAL_WBM_SW_COOKIE_CFG2, val);

	/* Enable Cookie conversion for WBM2SW Rings */
	val = ath12k_hif_read32(ab, wbm_base + HAL_WBM_SW_COOKIE_CONVERT_CFG);
	val |= u32_encode_bits(1, HAL_WBM_SW_COOKIE_CONV_CFG_GLOBAL_EN) |
	       ab->hw_params->hal_params->wbm2sw_cc_enable;

	ath12k_hif_write32(ab, wbm_base + HAL_WBM_SW_COOKIE_CONVERT_CFG, val);
}

static u32 ath12k_dp_cc_cookie_gen(u16 ppt_idx, u16 spt_idx)
{
	return (u32)ppt_idx << ATH12K_CC_PPT_SHIFT | spt_idx;
}

static inline void *ath12k_dp_cc_get_desc_addr_ptr(struct ath12k_base *ab,
						   u16 ppt_idx, u16 spt_idx)
{
	struct ath12k_dp *dp = &ab->dp;

	return dp->spt_info[ppt_idx].vaddr + spt_idx;
}

struct ath12k_rx_desc_info *ath12k_dp_get_rx_desc(struct ath12k_base *ab,
						  u32 cookie)
{
	struct ath12k_rx_desc_info **desc_addr_ptr;
	u16 ppt_idx, spt_idx;

	ppt_idx = u32_get_bits(cookie, ATH12K_DP_CC_COOKIE_PPT);
	spt_idx = u32_get_bits(cookie, ATH12k_DP_CC_COOKIE_SPT);

	if (ppt_idx > ATH12K_NUM_RX_SPT_PAGES ||
	    spt_idx > ATH12K_MAX_SPT_ENTRIES)
		return NULL;

	desc_addr_ptr = ath12k_dp_cc_get_desc_addr_ptr(ab, ppt_idx, spt_idx);

	return *desc_addr_ptr;
}

struct ath12k_tx_desc_info *ath12k_dp_get_tx_desc(struct ath12k_base *ab,
						  u32 cookie)
{
	struct ath12k_tx_desc_info **desc_addr_ptr;
	u16 ppt_idx, spt_idx;

	ppt_idx = u32_get_bits(cookie, ATH12K_DP_CC_COOKIE_PPT);
	spt_idx = u32_get_bits(cookie, ATH12k_DP_CC_COOKIE_SPT);

	if (ppt_idx < ATH12K_NUM_RX_SPT_PAGES ||
	    ppt_idx > ab->dp.num_spt_pages ||
	    spt_idx > ATH12K_MAX_SPT_ENTRIES)
		return NULL;

	desc_addr_ptr = ath12k_dp_cc_get_desc_addr_ptr(ab, ppt_idx, spt_idx);

	return *desc_addr_ptr;
}

static int ath12k_dp_cc_desc_init(struct ath12k_base *ab)
{
	struct ath12k_dp *dp = &ab->dp;
	struct ath12k_rx_desc_info *rx_descs, **rx_desc_addr;
	struct ath12k_tx_desc_info *tx_descs, **tx_desc_addr;
	u32 i, j, pool_id, tx_spt_page;
	u32 ppt_idx;

	spin_lock_bh(&dp->rx_desc_lock);

	/* First ATH12K_NUM_RX_SPT_PAGES of allocated SPT pages are used for RX */
	for (i = 0; i < ATH12K_NUM_RX_SPT_PAGES; i++) {
		rx_descs = kcalloc(ATH12K_MAX_SPT_ENTRIES, sizeof(*rx_descs),
				   GFP_ATOMIC);

		if (!rx_descs) {
			spin_unlock_bh(&dp->rx_desc_lock);
			return -ENOMEM;
		}

		dp->spt_info->rxbaddr[i] = &rx_descs[0];

		for (j = 0; j < ATH12K_MAX_SPT_ENTRIES; j++) {
			rx_descs[j].cookie = ath12k_dp_cc_cookie_gen(i, j);
			rx_descs[j].magic = ATH12K_DP_RX_DESC_MAGIC;
			list_add_tail(&rx_descs[j].list, &dp->rx_desc_free_list);

			/* Update descriptor VA in SPT */
			rx_desc_addr = ath12k_dp_cc_get_desc_addr_ptr(ab, i, j);
			*rx_desc_addr = &rx_descs[j];
		}
	}

	spin_unlock_bh(&dp->rx_desc_lock);

	for (pool_id = 0; pool_id < ATH12K_HW_MAX_QUEUES; pool_id++) {
		spin_lock_bh(&dp->tx_desc_lock[pool_id]);
		for (i = 0; i < ATH12K_TX_SPT_PAGES_PER_POOL; i++) {
			tx_descs = kcalloc(ATH12K_MAX_SPT_ENTRIES, sizeof(*tx_descs),
					   GFP_ATOMIC);

			if (!tx_descs) {
				spin_unlock_bh(&dp->tx_desc_lock[pool_id]);
				/* Caller takes care of TX pending and RX desc cleanup */
				return -ENOMEM;
			}

			tx_spt_page = i + pool_id * ATH12K_TX_SPT_PAGES_PER_POOL;
			dp->spt_info->txbaddr[tx_spt_page] = &tx_descs[0];

			for (j = 0; j < ATH12K_MAX_SPT_ENTRIES; j++) {
				ppt_idx = ATH12K_NUM_RX_SPT_PAGES + tx_spt_page;
				tx_descs[j].desc_id = ath12k_dp_cc_cookie_gen(ppt_idx, j);
				tx_descs[j].pool_id = pool_id;
				list_add_tail(&tx_descs[j].list,
					      &dp->tx_desc_free_list[pool_id]);

				/* Update descriptor VA in SPT */
				tx_desc_addr =
					ath12k_dp_cc_get_desc_addr_ptr(ab, ppt_idx, j);
				*tx_desc_addr = &tx_descs[j];
			}
		}
		spin_unlock_bh(&dp->tx_desc_lock[pool_id]);
	}
	return 0;
}

static int ath12k_dp_cc_init(struct ath12k_base *ab)
{
	struct ath12k_dp *dp = &ab->dp;
	int i, ret = 0;
	u32 cmem_base;

	INIT_LIST_HEAD(&dp->rx_desc_free_list);
	INIT_LIST_HEAD(&dp->rx_desc_used_list);
	spin_lock_init(&dp->rx_desc_lock);

	for (i = 0; i < ATH12K_HW_MAX_QUEUES; i++) {
		INIT_LIST_HEAD(&dp->tx_desc_free_list[i]);
		INIT_LIST_HEAD(&dp->tx_desc_used_list[i]);
		spin_lock_init(&dp->tx_desc_lock[i]);
	}

	dp->num_spt_pages = ATH12K_NUM_SPT_PAGES;
	if (dp->num_spt_pages > ATH12K_MAX_PPT_ENTRIES)
		dp->num_spt_pages = ATH12K_MAX_PPT_ENTRIES;

	dp->spt_info = kcalloc(dp->num_spt_pages, sizeof(struct ath12k_spt_info),
			       GFP_KERNEL);

	if (!dp->spt_info) {
		ath12k_warn(ab, "SPT page allocation failure");
		return -ENOMEM;
	}

	cmem_base = ab->qmi.dev_mem[ATH12K_QMI_DEVMEM_CMEM_INDEX].start;

	for (i = 0; i < dp->num_spt_pages; i++) {
		dp->spt_info[i].vaddr = dma_alloc_coherent(ab->dev,
							   ATH12K_PAGE_SIZE,
							   &dp->spt_info[i].paddr,
							   GFP_KERNEL);

		if (!dp->spt_info[i].vaddr) {
			ret = -ENOMEM;
			goto free;
		}

		if (dp->spt_info[i].paddr & ATH12K_SPT_4K_ALIGN_CHECK) {
			ath12k_warn(ab, "SPT allocated memory is not 4K aligned");
			ret = -EINVAL;
			goto free;
		}

		/* Write to PPT in CMEM */
		ath12k_hif_write32(ab, cmem_base + ATH12K_PPT_ADDR_OFFSET(i),
				   dp->spt_info[i].paddr >> ATH12K_SPT_4K_ALIGN_OFFSET);
	}

	ret = ath12k_dp_cc_desc_init(ab);
	if (ret) {
		ath12k_warn(ab, "HW CC desc init failed %d", ret);
		goto free;
	}

	return 0;
free:
	ath12k_dp_cc_cleanup(ab);
	return ret;
}

static int ath12k_dp_reoq_lut_setup(struct ath12k_base *ab)
{
	struct ath12k_dp *dp = &ab->dp;

	if (!ab->hw_params->reoq_lut_support)
		return 0;

	dp->reoq_lut.vaddr = dma_alloc_coherent(ab->dev,
						DP_REOQ_LUT_SIZE,
						&dp->reoq_lut.paddr,
						GFP_KERNEL | __GFP_ZERO);
	if (!dp->reoq_lut.vaddr) {
		ath12k_warn(ab, "failed to allocate memory for reoq table");
		return -ENOMEM;
	}

	ath12k_hif_write32(ab, HAL_SEQ_WCSS_UMAC_REO_REG + HAL_REO1_QDESC_LUT_BASE0(ab),
			   dp->reoq_lut.paddr);
	return 0;
}

int ath12k_dp_alloc(struct ath12k_base *ab)
{
	struct ath12k_dp *dp = &ab->dp;
	struct hal_srng *srng = NULL;
	size_t size = 0;
	u32 n_link_desc = 0;
	int ret;
	int i;

	dp->ab = ab;

	INIT_LIST_HEAD(&dp->reo_cmd_list);
	INIT_LIST_HEAD(&dp->reo_cmd_cache_flush_list);
	spin_lock_init(&dp->reo_cmd_lock);

	dp->reo_cmd_cache_flush_count = 0;

	ret = ath12k_wbm_idle_ring_setup(ab, &n_link_desc);
	if (ret) {
		ath12k_warn(ab, "failed to setup wbm_idle_ring: %d\n", ret);
		return ret;
	}

	srng = &ab->hal.srng_list[dp->wbm_idle_ring.ring_id];

	ret = ath12k_dp_link_desc_setup(ab, dp->link_desc_banks,
					HAL_WBM_IDLE_LINK, srng, n_link_desc);
	if (ret) {
		ath12k_warn(ab, "failed to setup link desc: %d\n", ret);
		return ret;
	}

	ret = ath12k_dp_cc_init(ab);

	if (ret) {
		ath12k_warn(ab, "failed to setup cookie converter %d\n", ret);
		goto fail_link_desc_cleanup;
	}
	ret = ath12k_dp_init_bank_profiles(ab);
	if (ret) {
		ath12k_warn(ab, "failed to setup bank profiles %d\n", ret);
		goto fail_hw_cc_cleanup;
	}

	ret = ath12k_dp_srng_common_setup(ab);
	if (ret)
		goto fail_dp_bank_profiles_cleanup;

	size = sizeof(struct hal_wbm_release_ring_tx) * DP_TX_COMP_RING_SIZE;

	ret = ath12k_dp_reoq_lut_setup(ab);
	if (ret) {
		ath12k_warn(ab, "failed to setup reoq table %d\n", ret);
		goto fail_cmn_srng_cleanup;
	}

	for (i = 0; i < ab->hw_params->max_tx_ring; i++) {
		dp->tx_ring[i].tcl_data_ring_id = i;

		dp->tx_ring[i].tx_status_head = 0;
		dp->tx_ring[i].tx_status_tail = DP_TX_COMP_RING_SIZE - 1;
		dp->tx_ring[i].tx_status = kmalloc(size, GFP_KERNEL);
		if (!dp->tx_ring[i].tx_status) {
			ret = -ENOMEM;
			/* FIXME: The allocated tx status is not freed
			 * properly here
			 */
			goto fail_cmn_reoq_cleanup;
		}
	}

	for (i = 0; i < HAL_DSCP_TID_MAP_TBL_NUM_ENTRIES_MAX; i++)
		ath12k_hal_tx_set_dscp_tid_map(ab, i);

	ret = ath12k_dp_rx_alloc(ab);
	if (ret)
		goto fail_dp_rx_free;

	/* Init any SOC level resource for DP */

	return 0;

fail_dp_rx_free:
	ath12k_dp_rx_free(ab);

fail_cmn_reoq_cleanup:
	ath12k_dp_reoq_lut_cleanup(ab);

fail_cmn_srng_cleanup:
	ath12k_dp_srng_common_cleanup(ab);

fail_dp_bank_profiles_cleanup:
	ath12k_dp_deinit_bank_profiles(ab);

fail_hw_cc_cleanup:
	ath12k_dp_cc_cleanup(ab);

fail_link_desc_cleanup:
	ath12k_dp_link_desc_cleanup(ab, dp->link_desc_banks,
				    HAL_WBM_IDLE_LINK, &dp->wbm_idle_ring);

	return ret;
}