36f68ad7cb
Enable support for receive defragmentation on Lithium. Change-Id: I6c1213db29d3b6e0a11506d6945d9ea05ece2c73 CRs-Fixed: 1109359
569 wiersze
16 KiB
C
569 wiersze
16 KiB
C
/*
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* Copyright (c) 2016-2017 The Linux Foundation. All rights reserved.
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*
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* Permission to use, copy, modify, and/or distribute this software for
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* any purpose with or without fee is hereby granted, provided that the
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* above copyright notice and this permission notice appear in all
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* copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
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* WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
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* AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
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* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
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* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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#ifndef _DP_RX_H
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#define _DP_RX_H
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#include "hal_rx.h"
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#include "dp_tx.h"
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#include "dp_peer.h"
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#ifdef RXDMA_OPTIMIZATION
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#define RX_BUFFER_ALIGNMENT 128
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#else /* RXDMA_OPTIMIZATION */
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#define RX_BUFFER_ALIGNMENT 4
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#endif /* RXDMA_OPTIMIZATION */
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#define RX_BUFFER_SIZE 2048
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#define RX_BUFFER_RESERVATION 0
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#define DP_PEER_METADATA_PEER_ID_MASK 0x0000ffff
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#define DP_PEER_METADATA_PEER_ID_SHIFT 0
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#define DP_PEER_METADATA_VDEV_ID_MASK 0x00070000
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#define DP_PEER_METADATA_VDEV_ID_SHIFT 16
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#define DP_PEER_METADATA_PEER_ID_GET(_peer_metadata) \
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(((_peer_metadata) & DP_PEER_METADATA_PEER_ID_MASK) \
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>> DP_PEER_METADATA_PEER_ID_SHIFT)
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#define DP_PEER_METADATA_ID_GET(_peer_metadata) \
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(((_peer_metadata) & DP_PEER_METADATA_VDEV_ID_MASK) \
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>> DP_PEER_METADATA_VDEV_ID_SHIFT)
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/**
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* struct dp_rx_desc
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*
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* @nbuf : VA of the "skb" posted
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* @rx_buf_start : VA of the original Rx buffer, before
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* movement of any skb->data pointer
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* @cookie : index into the sw array which holds
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* the sw Rx descriptors
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* Cookie space is 21 bits:
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* lower 18 bits -- index
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* upper 3 bits -- pool_id
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* @pool_id : pool Id for which this allocated.
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* Can only be used if there is no flow
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* steering
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*/
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struct dp_rx_desc {
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qdf_nbuf_t nbuf;
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uint8_t *rx_buf_start;
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uint32_t cookie;
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uint8_t pool_id;
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};
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#define RX_DESC_COOKIE_INDEX_SHIFT 0
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#define RX_DESC_COOKIE_INDEX_MASK 0x3ffff /* 18 bits */
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#define RX_DESC_COOKIE_POOL_ID_SHIFT 18
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#define RX_DESC_COOKIE_POOL_ID_MASK 0x1c0000
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#define DP_RX_DESC_COOKIE_POOL_ID_GET(_cookie) \
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(((_cookie) & RX_DESC_COOKIE_POOL_ID_MASK) >> \
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RX_DESC_COOKIE_POOL_ID_SHIFT)
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#define DP_RX_DESC_COOKIE_INDEX_GET(_cookie) \
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(((_cookie) & RX_DESC_COOKIE_INDEX_MASK) >> \
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RX_DESC_COOKIE_INDEX_SHIFT)
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/*
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*dp_rx_xor_block() - xor block of data
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*@b: destination data block
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*@a: source data block
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*@len: length of the data to process
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*
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*Returns: None
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*/
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static inline void dp_rx_xor_block(uint8_t *b, const uint8_t *a, qdf_size_t len)
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{
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qdf_size_t i;
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for (i = 0; i < len; i++)
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b[i] ^= a[i];
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}
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/*
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*dp_rx_rotl() - rotate the bits left
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*@val: unsigned integer input value
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*@bits: number of bits
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*
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*Returns: Integer with left rotated by number of 'bits'
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*/
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static inline uint32_t dp_rx_rotl(uint32_t val, int bits)
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{
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return (val << bits) | (val >> (32 - bits));
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}
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/*
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*dp_rx_rotr() - rotate the bits right
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*@val: unsigned integer input value
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*@bits: number of bits
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*
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*Returns: Integer with right rotated by number of 'bits'
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*/
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static inline uint32_t dp_rx_rotr(uint32_t val, int bits)
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{
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return (val >> bits) | (val << (32 - bits));
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}
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/*
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*dp_rx_xswap() - swap the bits left
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*@val: unsigned integer input value
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*
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*Returns: Integer with bits swapped
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*/
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static inline uint32_t dp_rx_xswap(uint32_t val)
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{
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return ((val & 0x00ff00ff) << 8) | ((val & 0xff00ff00) >> 8);
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}
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/*
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*dp_rx_get_le32_split() - get little endian 32 bits split
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*@b0: byte 0
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*@b1: byte 1
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*@b2: byte 2
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*@b3: byte 3
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*
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*Returns: Integer with split little endian 32 bits
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*/
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static inline uint32_t dp_rx_get_le32_split(uint8_t b0, uint8_t b1, uint8_t b2,
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uint8_t b3)
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{
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return b0 | (b1 << 8) | (b2 << 16) | (b3 << 24);
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}
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/*
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*dp_rx_get_le32() - get little endian 32 bits
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*@b0: byte 0
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*@b1: byte 1
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*@b2: byte 2
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*@b3: byte 3
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*
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*Returns: Integer with little endian 32 bits
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*/
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static inline uint32_t dp_rx_get_le32(const uint8_t *p)
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{
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return dp_rx_get_le32_split(p[0], p[1], p[2], p[3]);
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}
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/*
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* dp_rx_put_le32() - put little endian 32 bits
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* @p: destination char array
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* @v: source 32-bit integer
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*
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* Returns: None
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*/
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static inline void dp_rx_put_le32(uint8_t *p, uint32_t v)
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{
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p[0] = (v) & 0xff;
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p[1] = (v >> 8) & 0xff;
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p[2] = (v >> 16) & 0xff;
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p[3] = (v >> 24) & 0xff;
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}
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/* Extract michal mic block of data */
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#define dp_rx_michael_block(l, r) \
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do { \
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r ^= dp_rx_rotl(l, 17); \
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l += r; \
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r ^= dp_rx_xswap(l); \
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l += r; \
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r ^= dp_rx_rotl(l, 3); \
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l += r; \
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r ^= dp_rx_rotr(l, 2); \
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l += r; \
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} while (0)
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/**
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* struct dp_rx_desc_list_elem_t
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*
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* @next : Next pointer to form free list
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* @rx_desc : DP Rx descriptor
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*/
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union dp_rx_desc_list_elem_t {
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union dp_rx_desc_list_elem_t *next;
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struct dp_rx_desc rx_desc;
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};
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/**
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* dp_rx_cookie_2_va_rxdma_buf() - Converts cookie to a virtual address of
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* the Rx descriptor on Rx DMA source ring buffer
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* @soc: core txrx main context
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* @cookie: cookie used to lookup virtual address
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*
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* Return: void *: Virtual Address of the Rx descriptor
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*/
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static inline
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void *dp_rx_cookie_2_va_rxdma_buf(struct dp_soc *soc, uint32_t cookie)
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{
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uint8_t pool_id = DP_RX_DESC_COOKIE_POOL_ID_GET(cookie);
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uint16_t index = DP_RX_DESC_COOKIE_INDEX_GET(cookie);
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/* TODO */
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/* Add sanity for pool_id & index */
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return &(soc->rx_desc_buf[pool_id].array[index].rx_desc);
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}
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/**
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* dp_rx_cookie_2_va_mon_buf() - Converts cookie to a virtual address of
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* the Rx descriptor on monitor ring buffer
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* @soc: core txrx main context
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* @cookie: cookie used to lookup virtual address
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*
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* Return: void *: Virtual Address of the Rx descriptor
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*/
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static inline
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void *dp_rx_cookie_2_va_mon_buf(struct dp_soc *soc, uint32_t cookie)
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{
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uint8_t pool_id = DP_RX_DESC_COOKIE_POOL_ID_GET(cookie);
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uint16_t index = DP_RX_DESC_COOKIE_INDEX_GET(cookie);
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/* TODO */
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/* Add sanity for pool_id & index */
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return &(soc->rx_desc_mon[pool_id].array[index].rx_desc);
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}
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/**
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* dp_rx_cookie_2_va_mon_status() - Converts cookie to a virtual address of
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* the Rx descriptor on monitor status ring buffer
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* @soc: core txrx main context
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* @cookie: cookie used to lookup virtual address
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*
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* Return: void *: Virtual Address of the Rx descriptor
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*/
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static inline
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void *dp_rx_cookie_2_va_mon_status(struct dp_soc *soc, uint32_t cookie)
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{
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uint8_t pool_id = DP_RX_DESC_COOKIE_POOL_ID_GET(cookie);
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uint16_t index = DP_RX_DESC_COOKIE_INDEX_GET(cookie);
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/* TODO */
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/* Add sanity for pool_id & index */
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return &(soc->rx_desc_status[pool_id].array[index].rx_desc);
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}
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void dp_rx_add_desc_list_to_free_list(struct dp_soc *soc,
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union dp_rx_desc_list_elem_t **local_desc_list,
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union dp_rx_desc_list_elem_t **tail,
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uint16_t pool_id,
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struct rx_desc_pool *rx_desc_pool);
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uint16_t dp_rx_get_free_desc_list(struct dp_soc *soc, uint32_t pool_id,
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struct rx_desc_pool *rx_desc_pool,
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uint16_t num_descs,
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union dp_rx_desc_list_elem_t **desc_list,
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union dp_rx_desc_list_elem_t **tail);
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QDF_STATUS dp_rx_pdev_attach(struct dp_pdev *pdev);
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void dp_rx_pdev_detach(struct dp_pdev *pdev);
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uint32_t
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dp_rx_process(struct dp_intr *int_ctx, void *hal_ring, uint32_t quota);
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uint32_t dp_rx_err_process(struct dp_soc *soc, void *hal_ring, uint32_t quota);
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uint32_t
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dp_rx_wbm_err_process(struct dp_soc *soc, void *hal_ring, uint32_t quota);
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QDF_STATUS dp_rx_desc_pool_alloc(struct dp_soc *soc,
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uint32_t pool_id,
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uint32_t pool_size,
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struct rx_desc_pool *rx_desc_pool);
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void dp_rx_desc_pool_free(struct dp_soc *soc,
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uint32_t pool_id,
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struct rx_desc_pool *rx_desc_pool);
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void dp_rx_deliver_raw(struct dp_vdev *vdev, qdf_nbuf_t nbuf_list);
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/**
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* dp_rx_add_to_free_desc_list() - Adds to a local free descriptor list
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*
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* @head: pointer to the head of local free list
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* @tail: pointer to the tail of local free list
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* @new: new descriptor that is added to the free list
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*
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* Return: void:
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*/
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static inline
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void dp_rx_add_to_free_desc_list(union dp_rx_desc_list_elem_t **head,
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union dp_rx_desc_list_elem_t **tail,
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struct dp_rx_desc *new)
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{
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qdf_assert(head && new);
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new->nbuf = NULL;
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((union dp_rx_desc_list_elem_t *)new)->next = *head;
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*head = (union dp_rx_desc_list_elem_t *)new;
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if (*tail == NULL)
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*tail = *head;
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}
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/**
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* dp_rx_wds_srcport_learn() - Add or update the STA PEER which
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* is behind the WDS repeater.
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*
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* @soc: core txrx main context
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* @rx_tlv_hdr: base address of RX TLV header
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* @ta_peer: WDS repeater peer
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* @nbuf: rx pkt
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*
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* Return: void:
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*/
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#ifndef CONFIG_MCL
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static inline void
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dp_rx_wds_srcport_learn(struct dp_soc *soc,
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uint8_t *rx_tlv_hdr,
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struct dp_peer *ta_peer,
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qdf_nbuf_t nbuf)
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{
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uint16_t sa_sw_peer_id = hal_rx_msdu_end_sa_sw_peer_id_get(rx_tlv_hdr);
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uint32_t flags = IEEE80211_NODE_F_WDS_HM;
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uint32_t ret = 0;
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uint8_t wds_src_mac[IEEE80211_ADDR_LEN];
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memcpy(wds_src_mac, (qdf_nbuf_data(nbuf) + IEEE80211_ADDR_LEN),
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IEEE80211_ADDR_LEN);
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if (!hal_rx_msdu_end_sa_is_valid_get(rx_tlv_hdr)) {
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ret = soc->cdp_soc.ol_ops->peer_add_wds_entry(
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soc->osif_soc,
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wds_src_mac,
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ta_peer->mac_addr.raw,
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flags);
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} else if (sa_sw_peer_id != ta_peer->peer_ids[0]) {
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ret = soc->cdp_soc.ol_ops->peer_update_wds_entry(
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soc->osif_soc,
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wds_src_mac,
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ta_peer->mac_addr.raw,
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flags);
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}
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return;
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}
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#else
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static inline void
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dp_rx_wds_srcport_learn(struct dp_soc *soc,
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uint8_t *rx_tlv_hdr,
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struct dp_peer *ta_peer,
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qdf_nbuf_t nbuf)
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{
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}
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#endif
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uint8_t dp_rx_process_invalid_peer(struct dp_soc *soc, qdf_nbuf_t nbuf);
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#define DP_RX_LIST_APPEND(head, tail, elem) \
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do { \
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if (!(head)) { \
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(head) = (elem); \
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} else { \
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qdf_nbuf_set_next((tail), (elem)); \
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} \
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(tail) = (elem); \
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qdf_nbuf_set_next((tail), NULL); \
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} while (0)
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#ifndef BUILD_X86
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static inline int check_x86_paddr(struct dp_soc *dp_soc, qdf_nbuf_t *rx_netbuf,
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qdf_dma_addr_t *paddr, struct dp_pdev *pdev)
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{
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return QDF_STATUS_SUCCESS;
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}
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#else
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#define MAX_RETRY 100
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static inline int check_x86_paddr(struct dp_soc *dp_soc, qdf_nbuf_t *rx_netbuf,
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qdf_dma_addr_t *paddr, struct dp_pdev *pdev)
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{
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uint32_t nbuf_retry = 0;
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int32_t ret;
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const uint32_t x86_phy_addr = 0x50000000;
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/*
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* in M2M emulation platforms (x86) the memory below 0x50000000
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* is reserved for target use, so any memory allocated in this
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* region should not be used by host
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*/
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do {
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if (qdf_likely(*paddr > x86_phy_addr))
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return QDF_STATUS_SUCCESS;
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else {
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QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_INFO,
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"phy addr %p exceded 0x50000000 trying again\n",
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paddr);
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nbuf_retry++;
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if ((*rx_netbuf)) {
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qdf_nbuf_unmap_single(dp_soc->osdev, *rx_netbuf,
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QDF_DMA_BIDIRECTIONAL);
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/* Not freeing buffer intentionally.
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* Observed that same buffer is getting
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* re-allocated resulting in longer load time
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* WMI init timeout.
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* This buffer is anyway not useful so skip it.
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**/
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}
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*rx_netbuf = qdf_nbuf_alloc(pdev->osif_pdev,
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RX_BUFFER_SIZE,
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RX_BUFFER_RESERVATION,
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RX_BUFFER_ALIGNMENT,
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FALSE);
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if (qdf_unlikely(!(*rx_netbuf)))
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return QDF_STATUS_E_FAILURE;
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ret = qdf_nbuf_map_single(dp_soc->osdev, *rx_netbuf,
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QDF_DMA_BIDIRECTIONAL);
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if (qdf_unlikely(ret == QDF_STATUS_E_FAILURE)) {
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qdf_nbuf_free(*rx_netbuf);
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*rx_netbuf = NULL;
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continue;
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}
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*paddr = qdf_nbuf_get_frag_paddr(*rx_netbuf, 0);
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}
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} while (nbuf_retry < MAX_RETRY);
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if ((*rx_netbuf)) {
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qdf_nbuf_unmap_single(dp_soc->osdev, *rx_netbuf,
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QDF_DMA_BIDIRECTIONAL);
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qdf_nbuf_free(*rx_netbuf);
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}
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return QDF_STATUS_E_FAILURE;
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}
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#endif
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/**
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* dp_rx_cookie_2_link_desc_va() - Converts cookie to a virtual address of
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* the MSDU Link Descriptor
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* @soc: core txrx main context
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* @buf_info: buf_info include cookie that used to lookup virtual address of
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* link descriptor Normally this is just an index into a per SOC array.
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*
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* This is the VA of the link descriptor, that HAL layer later uses to
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* retrieve the list of MSDU's for a given MPDU.
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*
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* Return: void *: Virtual Address of the Rx descriptor
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*/
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static inline
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void *dp_rx_cookie_2_link_desc_va(struct dp_soc *soc,
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struct hal_buf_info *buf_info)
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{
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void *link_desc_va;
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/* TODO */
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/* Add sanity for cookie */
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link_desc_va = soc->link_desc_banks[buf_info->sw_cookie].base_vaddr +
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(buf_info->paddr -
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soc->link_desc_banks[buf_info->sw_cookie].base_paddr);
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return link_desc_va;
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}
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/**
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* dp_rx_cookie_2_mon_link_desc_va() - Converts cookie to a virtual address of
|
|
* the MSDU Link Descriptor
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|
* @pdev: core txrx pdev context
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|
* @buf_info: buf_info includes cookie that used to lookup virtual address of
|
|
* link descriptor. Normally this is just an index into a per pdev array.
|
|
*
|
|
* This is the VA of the link descriptor in monitor mode destination ring,
|
|
* that HAL layer later uses to retrieve the list of MSDU's for a given MPDU.
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|
*
|
|
* Return: void *: Virtual Address of the Rx descriptor
|
|
*/
|
|
static inline
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|
void *dp_rx_cookie_2_mon_link_desc_va(struct dp_pdev *pdev,
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|
struct hal_buf_info *buf_info)
|
|
{
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|
void *link_desc_va;
|
|
|
|
/* TODO */
|
|
/* Add sanity for cookie */
|
|
|
|
link_desc_va = pdev->link_desc_banks[buf_info->sw_cookie].base_vaddr +
|
|
(buf_info->paddr -
|
|
pdev->link_desc_banks[buf_info->sw_cookie].base_paddr);
|
|
return link_desc_va;
|
|
}
|
|
|
|
/**
|
|
* dp_rx_defrag_concat() - Concatenate the fragments
|
|
*
|
|
* @dst: destination pointer to the buffer
|
|
* @src: source pointer from where the fragment payload is to be copied
|
|
*
|
|
* Return: QDF_STATUS
|
|
*/
|
|
static inline QDF_STATUS dp_rx_defrag_concat(qdf_nbuf_t dst, qdf_nbuf_t src)
|
|
{
|
|
/*
|
|
* Inside qdf_nbuf_cat, if it is necessary to reallocate dst
|
|
* to provide space for src, the headroom portion is copied from
|
|
* the original dst buffer to the larger new dst buffer.
|
|
* (This is needed, because the headroom of the dst buffer
|
|
* contains the rx desc.)
|
|
*/
|
|
if (qdf_nbuf_cat(dst, src))
|
|
return QDF_STATUS_E_DEFRAG_ERROR;
|
|
|
|
return QDF_STATUS_SUCCESS;
|
|
}
|
|
|
|
|
|
/*
|
|
* dp_rx_buffers_replenish() - replenish rxdma ring with rx nbufs
|
|
* called during dp rx initialization
|
|
* and at the end of dp_rx_process.
|
|
*
|
|
* @soc: core txrx main context
|
|
* @mac_id: mac_id which is one of 3 mac_ids
|
|
* @dp_rxdma_srng: dp rxdma circular ring
|
|
* @rx_desc_pool: Poiter to free Rx descriptor pool
|
|
* @num_req_buffers: number of buffer to be replenished
|
|
* @desc_list: list of descs if called from dp_rx_process
|
|
* or NULL during dp rx initialization or out of buffer
|
|
* interrupt.
|
|
* @tail: tail of descs list
|
|
* @owner: who owns the nbuf (host, NSS etc...)
|
|
* Return: return success or failure
|
|
*/
|
|
QDF_STATUS dp_rx_buffers_replenish(struct dp_soc *dp_soc, uint32_t mac_id,
|
|
struct dp_srng *dp_rxdma_srng,
|
|
struct rx_desc_pool *rx_desc_pool,
|
|
uint32_t num_req_buffers,
|
|
union dp_rx_desc_list_elem_t **desc_list,
|
|
union dp_rx_desc_list_elem_t **tail,
|
|
uint8_t owner);
|
|
|
|
/**
|
|
* dp_rx_link_desc_return() - Return a MPDU link descriptor to HW
|
|
* (WBM), following error handling
|
|
*
|
|
* @soc: core DP main context
|
|
* @buf_addr_info: opaque pointer to the REO error ring descriptor
|
|
* @buf_addr_info: void pointer to the buffer_addr_info
|
|
* Return: QDF_STATUS
|
|
*/
|
|
QDF_STATUS
|
|
dp_rx_link_desc_buf_return(struct dp_soc *soc, struct dp_srng *dp_rxdma_srng,
|
|
void *buf_addr_info);
|
|
#endif /* _DP_RX_H */
|