path: root/drivers/net/wireless/ath/ath11k/ce.c

// SPDX-License-Identifier: BSD-3-Clause-Clear
/*
 * Copyright (c) 2018-2019 The Linux Foundation. All rights reserved.
 */

#include "dp_rx.h"
#include "debug.h"
#include "hif.h"

const struct ce_attr ath11k_host_ce_config_ipq8074[] = {
	/* CE0: host->target HTC control and raw streams */
	{
		.flags = CE_ATTR_FLAGS,
		.src_nentries = 16,
		.src_sz_max = 2048,
		.dest_nentries = 0,
	},

	/* CE1: target->host HTT + HTC control */
	{
		.flags = CE_ATTR_FLAGS,
		.src_nentries = 0,
		.src_sz_max = 2048,
		.dest_nentries = 512,
		.recv_cb = ath11k_htc_rx_completion_handler,
	},

	/* CE2: target->host WMI */
	{
		.flags = CE_ATTR_FLAGS,
		.src_nentries = 0,
		.src_sz_max = 2048,
		.dest_nentries = 512,
		.recv_cb = ath11k_htc_rx_completion_handler,
	},

	/* CE3: host->target WMI (mac0) */
	{
		.flags = CE_ATTR_FLAGS,
		.src_nentries = 32,
		.src_sz_max = 2048,
		.dest_nentries = 0,
	},

	/* CE4: host->target HTT */
	{
		.flags = CE_ATTR_FLAGS | CE_ATTR_DIS_INTR,
		.src_nentries = 2048,
		.src_sz_max = 256,
		.dest_nentries = 0,
	},

	/* CE5: target->host pktlog */
	{
		.flags = CE_ATTR_FLAGS,
		.src_nentries = 0,
		.src_sz_max = 2048,
		.dest_nentries = 512,
		.recv_cb = ath11k_dp_htt_htc_t2h_msg_handler,
	},

	/* CE6: target autonomous hif_memcpy */
	{
		.flags = CE_ATTR_FLAGS | CE_ATTR_DIS_INTR,
		.src_nentries = 0,
		.src_sz_max = 0,
		.dest_nentries = 0,
	},

	/* CE7: host->target WMI (mac1) */
	{
		.flags = CE_ATTR_FLAGS,
		.src_nentries = 32,
		.src_sz_max = 2048,
		.dest_nentries = 0,
	},

	/* CE8: target autonomous hif_memcpy */
	{
		.flags = CE_ATTR_FLAGS,
		.src_nentries = 0,
		.src_sz_max = 0,
		.dest_nentries = 0,
	},

	/* CE9: host->target WMI (mac2) */
	{
		.flags = CE_ATTR_FLAGS,
		.src_nentries = 32,
		.src_sz_max = 2048,
		.dest_nentries = 0,
	},

	/* CE10: target->host HTT */
	{
		.flags = CE_ATTR_FLAGS,
		.src_nentries = 0,
		.src_sz_max = 2048,
		.dest_nentries = 512,
		.recv_cb = ath11k_htc_rx_completion_handler,
	},

	/* CE11: Not used */
	{
		.flags = CE_ATTR_FLAGS,
		.src_nentries = 0,
		.src_sz_max = 0,
		.dest_nentries = 0,
	},
};

const struct ce_attr ath11k_host_ce_config_qca6390[] = {
	/* CE0: host->target HTC control and raw streams */
	{
		.flags = CE_ATTR_FLAGS,
		.src_nentries = 16,
		.src_sz_max = 2048,
		.dest_nentries = 0,
	},

	/* CE1: target->host HTT + HTC control */
	{
		.flags = CE_ATTR_FLAGS,
		.src_nentries = 0,
		.src_sz_max = 2048,
		.dest_nentries = 512,
		.recv_cb = ath11k_htc_rx_completion_handler,
	},

	/* CE2: target->host WMI */
	{
		.flags = CE_ATTR_FLAGS,
		.src_nentries = 0,
		.src_sz_max = 2048,
		.dest_nentries = 512,
		.recv_cb = ath11k_htc_rx_completion_handler,
	},

	/* CE3: host->target WMI (mac0) */
	{
		.flags = CE_ATTR_FLAGS,
		.src_nentries = 32,
		.src_sz_max = 2048,
		.dest_nentries = 0,
	},

	/* CE4: host->target HTT */
	{
		.flags = CE_ATTR_FLAGS | CE_ATTR_DIS_INTR,
		.src_nentries = 2048,
		.src_sz_max = 256,
		.dest_nentries = 0,
	},

	/* CE5: target->host pktlog */
	{
		.flags = CE_ATTR_FLAGS,
		.src_nentries = 0,
		.src_sz_max = 2048,
		.dest_nentries = 512,
		.recv_cb = ath11k_dp_htt_htc_t2h_msg_handler,
	},

	/* CE6: target autonomous hif_memcpy */
	{
		.flags = CE_ATTR_FLAGS | CE_ATTR_DIS_INTR,
		.src_nentries = 0,
		.src_sz_max = 0,
		.dest_nentries = 0,
	},

	/* CE7: host->target WMI (mac1) */
	{
		.flags = CE_ATTR_FLAGS,
		.src_nentries = 32,
		.src_sz_max = 2048,
		.dest_nentries = 0,
	},

	/* CE8: target autonomous hif_memcpy */
	{
		.flags = CE_ATTR_FLAGS,
		.src_nentries = 0,
		.src_sz_max = 0,
		.dest_nentries = 0,
	},

};

static bool ath11k_ce_need_shadow_fix(int ce_id)
{
	/* only ce4 needs shadow workaroud*/
	if (ce_id == 4)
		return true;
	return false;
}

static void ath11k_ce_stop_shadow_timers(struct ath11k_base *ab)
{
	int i;

	if (!ab->hw_params.supports_shadow_regs)
		return;

	for (i = 0; i < ab->hw_params.ce_count; i++)
		if (ath11k_ce_need_shadow_fix(i))
			ath11k_dp_shadow_stop_timer(ab, &ab->ce.hp_timer[i]);
}

static int ath11k_ce_rx_buf_enqueue_pipe(struct ath11k_ce_pipe *pipe,
					 struct sk_buff *skb, dma_addr_t paddr)
{
	struct ath11k_base *ab = pipe->ab;
	struct ath11k_ce_ring *ring = pipe->dest_ring;
	struct hal_srng *srng;
	unsigned int write_index;
	unsigned int nentries_mask = ring->nentries_mask;
	u32 *desc;
	int ret;

	lockdep_assert_held(&ab->ce.ce_lock);

	write_index = ring->write_index;

	srng = &ab->hal.srng_list[ring->hal_ring_id];

	spin_lock_bh(&srng->lock);

	ath11k_hal_srng_access_begin(ab, srng);

	if (unlikely(ath11k_hal_srng_src_num_free(ab, srng, false) < 1)) {
		ret =