txrx_edma.c | Explore in Territory

// SPDX-License-Identifier: ISC
/*
 * Copyright (c) 2012-2019 The Linux Foundation. All rights reserved.
 */

#include <linux/etherdevice.h>
#include <linux/moduleparam.h>
#include <linux/prefetch.h>
#include <linux/types.h>
#include <linux/list.h>
#include <linux/ip.h>
#include <linux/ipv6.h>
#include "wil6210.h"
#include "txrx_edma.h"
#include "txrx.h"
#include "trace.h"

/* Max number of entries (packets to complete) to update the hwtail of tx
 * status ring. Should be power of 2
 */
#define WIL_EDMA_TX_SRING_UPDATE_HW_TAIL …
#define WIL_EDMA_MAX_DATA_OFFSET …
/* RX buffer size must be aligned to 4 bytes */
#define WIL_EDMA_RX_BUF_LEN_DEFAULT …
#define MAX_INVALID_BUFF_ID_RETRY …

static void wil_tx_desc_unmap_edma(struct device *dev,
				   union wil_tx_desc *desc,
				   struct wil_ctx *ctx)
{ … }

static int wil_find_free_sring(struct wil6210_priv *wil)
{ … }

static void wil_sring_free(struct wil6210_priv *wil,
			   struct wil_status_ring *sring)
{ … }

static int wil_sring_alloc(struct wil6210_priv *wil,
			   struct wil_status_ring *sring)
{ … }

static int wil_tx_init_edma(struct wil6210_priv *wil)
{ … }

/* Allocate one skb for Rx descriptor RING */
static int wil_ring_alloc_skb_edma(struct wil6210_priv *wil,
				   struct wil_ring *ring, u32 i)
{ … }

static inline
void wil_get_next_rx_status_msg(struct wil_status_ring *sring, u8 *dr_bit,
				void *msg)
{ … }

static inline void wil_sring_advance_swhead(struct wil_status_ring *sring)
{ … }

static int wil_rx_refill_edma(struct wil6210_priv *wil)
{ … }

static void wil_move_all_rx_buff_to_free_list(struct wil6210_priv *wil,
					      struct wil_ring *ring)
{ … }

static void wil_free_rx_buff_arr(struct wil6210_priv *wil)
{ … }

static int wil_init_rx_buff_arr(struct wil6210_priv *wil,
				size_t size)
{ … }

static int wil_init_rx_sring(struct wil6210_priv *wil,
			     u16 status_ring_size,
			     size_t elem_size,
			     u16 ring_id)
{ … }

static int wil_ring_alloc_desc_ring(struct wil6210_priv *wil,
				    struct wil_ring *ring)
{ … }

static void wil_ring_free_edma(struct wil6210_priv *wil, struct wil_ring *ring)
{ … }

static int wil_init_rx_desc_ring(struct wil6210_priv *wil, u16 desc_ring_size,
				 int status_ring_id)
{ … }

static void wil_get_reorder_params_edma(struct wil6210_priv *wil,
					struct sk_buff *skb, int *tid,
					int *cid, int *mid, u16 *seq,
					int *mcast, int *retry)
{ … }

static void wil_get_netif_rx_params_edma(struct sk_buff *skb, int *cid,
					 int *security)
{ … }

static int wil_rx_crypto_check_edma(struct wil6210_priv *wil,
				    struct sk_buff *skb)
{ … }

static bool wil_is_rx_idle_edma(struct wil6210_priv *wil)
{ … }

static void wil_rx_buf_len_init_edma(struct wil6210_priv *wil)
{ … }

static int wil_rx_init_edma(struct wil6210_priv *wil, uint desc_ring_order)
{ … }

static int wil_ring_init_tx_edma(struct wil6210_vif *vif, int ring_id,
				 int size, int cid, int tid)
{ … }

static int wil_tx_ring_modify_edma(struct wil6210_vif *vif, int ring_id,
				   int cid, int tid)
{ … }

/* This function is used only for RX SW reorder */
static int wil_check_bar(struct wil6210_priv *wil, void *msg, int cid,
			 struct sk_buff *skb, struct wil_net_stats *stats)
{ … }

static int wil_rx_error_check_edma(struct wil6210_priv *wil,
				   struct sk_buff *skb,
				   struct wil_net_stats *stats)
{ … }

static struct sk_buff *wil_sring_reap_rx_edma(struct wil6210_priv *wil,
					      struct wil_status_ring *sring)
{ … }

void wil_rx_handle_edma(struct wil6210_priv *wil, int *quota)
{ … }

static int wil_tx_desc_map_edma(union wil_tx_desc *desc,
				dma_addr_t pa,
				u32 len,
				int ring_index)
{ … }

static inline void
wil_get_next_tx_status_msg(struct wil_status_ring *sring, u8 *dr_bit,
			   struct wil_ring_tx_status *msg)
{ … }

/* Clean up transmitted skb's from the Tx descriptor RING.
 * Return number of descriptors cleared.
 */
int wil_tx_sring_handler(struct wil6210_priv *wil,
			 struct wil_status_ring *sring)
{ … }

/* Sets the descriptor @d up for csum and/or TSO offloading. The corresponding
 * @skb is used to obtain the protocol and headers length.
 * @tso_desc_type is a descriptor type for TSO: 0 - a header, 1 - first data,
 * 2 - middle, 3 - last descriptor.
 */
static void wil_tx_desc_offload_setup_tso_edma(struct wil_tx_enhanced_desc *d,
					       int tso_desc_type, bool is_ipv4,
					       int tcp_hdr_len,
					       int skb_net_hdr_len,
					       int mss)
{ … }

static int wil_tx_tso_gen_desc(struct wil6210_priv *wil, void *buff_addr,
			       int len, uint i, int tso_desc_type,
			       skb_frag_t *frag, struct wil_ring *ring,
			       struct sk_buff *skb, bool is_ipv4,
			       int tcp_hdr_len, int skb_net_hdr_len,
			       int mss, int *descs_used)
{ … }

static int __wil_tx_ring_tso_edma(struct wil6210_priv *wil,
				  struct wil6210_vif *vif,
				  struct wil_ring *ring,
				  struct sk_buff *skb)
{ … }

static int wil_ring_init_bcast_edma(struct wil6210_vif *vif, int ring_id,
				    int size)
{ … }

static void wil_tx_fini_edma(struct wil6210_priv *wil)
{ … }

static void wil_rx_data_free(struct wil_status_ring *sring)
{ … }

static void wil_rx_fini_edma(struct wil6210_priv *wil)
{ … }

void wil_init_txrx_ops_edma(struct wil6210_priv *wil)
{ … }
linux/drivers/net/wireless/ath/wil6210/txrx_edma.c
