447 lines
13 KiB
C
447 lines
13 KiB
C
/*
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* Copyright (c) 2012 Qualcomm Atheros, Inc.
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#ifndef WIL6210_TXRX_H
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#define WIL6210_TXRX_H
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#define BUF_SW_OWNED (1)
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#define BUF_HW_OWNED (0)
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/* size of max. Rx packet */
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#define RX_BUF_LEN (2048)
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#define TX_BUF_LEN (2048)
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/* how many bytes to reserve for rtap header? */
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#define WIL6210_RTAP_SIZE (128)
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/* Tx/Rx path */
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/*
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* Common representation of physical address in Vring
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*/
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struct vring_dma_addr {
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__le32 addr_low;
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__le16 addr_high;
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} __packed;
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static inline dma_addr_t wil_desc_addr(struct vring_dma_addr *addr)
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{
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return le32_to_cpu(addr->addr_low) |
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((u64)le16_to_cpu(addr->addr_high) << 32);
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}
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static inline void wil_desc_addr_set(struct vring_dma_addr *addr,
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dma_addr_t pa)
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{
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addr->addr_low = cpu_to_le32(lower_32_bits(pa));
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addr->addr_high = cpu_to_le16((u16)upper_32_bits(pa));
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}
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/*
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* Tx descriptor - MAC part
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* [dword 0]
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* bit 0.. 9 : lifetime_expiry_value:10
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* bit 10 : interrup_en:1
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* bit 11 : status_en:1
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* bit 12..13 : txss_override:2
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* bit 14 : timestamp_insertion:1
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* bit 15 : duration_preserve:1
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* bit 16..21 : reserved0:6
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* bit 22..26 : mcs_index:5
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* bit 27 : mcs_en:1
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* bit 28..29 : reserved1:2
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* bit 30 : reserved2:1
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* bit 31 : sn_preserved:1
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* [dword 1]
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* bit 0.. 3 : pkt_mode:4
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* bit 4 : pkt_mode_en:1
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* bit 5.. 7 : reserved0:3
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* bit 8..13 : reserved1:6
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* bit 14 : reserved2:1
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* bit 15 : ack_policy_en:1
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* bit 16..19 : dst_index:4
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* bit 20 : dst_index_en:1
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* bit 21..22 : ack_policy:2
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* bit 23 : lifetime_en:1
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* bit 24..30 : max_retry:7
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* bit 31 : max_retry_en:1
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* [dword 2]
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* bit 0.. 7 : num_of_descriptors:8
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* bit 8..17 : reserved:10
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* bit 18..19 : l2_translation_type:2
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* bit 20 : snap_hdr_insertion_en:1
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* bit 21 : vlan_removal_en:1
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* bit 22..31 : reserved0:10
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* [dword 3]
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* bit 0.. 31: ucode_cmd:32
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*/
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struct vring_tx_mac {
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u32 d[3];
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u32 ucode_cmd;
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} __packed;
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/* TX MAC Dword 0 */
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#define MAC_CFG_DESC_TX_0_LIFETIME_EXPIRY_VALUE_POS 0
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#define MAC_CFG_DESC_TX_0_LIFETIME_EXPIRY_VALUE_LEN 10
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#define MAC_CFG_DESC_TX_0_LIFETIME_EXPIRY_VALUE_MSK 0x3FF
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#define MAC_CFG_DESC_TX_0_INTERRUP_EN_POS 10
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#define MAC_CFG_DESC_TX_0_INTERRUP_EN_LEN 1
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#define MAC_CFG_DESC_TX_0_INTERRUP_EN_MSK 0x400
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#define MAC_CFG_DESC_TX_0_STATUS_EN_POS 11
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#define MAC_CFG_DESC_TX_0_STATUS_EN_LEN 1
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#define MAC_CFG_DESC_TX_0_STATUS_EN_MSK 0x800
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#define MAC_CFG_DESC_TX_0_TXSS_OVERRIDE_POS 12
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#define MAC_CFG_DESC_TX_0_TXSS_OVERRIDE_LEN 2
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#define MAC_CFG_DESC_TX_0_TXSS_OVERRIDE_MSK 0x3000
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#define MAC_CFG_DESC_TX_0_TIMESTAMP_INSERTION_POS 14
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#define MAC_CFG_DESC_TX_0_TIMESTAMP_INSERTION_LEN 1
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#define MAC_CFG_DESC_TX_0_TIMESTAMP_INSERTION_MSK 0x4000
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#define MAC_CFG_DESC_TX_0_DURATION_PRESERVE_POS 15
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#define MAC_CFG_DESC_TX_0_DURATION_PRESERVE_LEN 1
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#define MAC_CFG_DESC_TX_0_DURATION_PRESERVE_MSK 0x8000
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#define MAC_CFG_DESC_TX_0_MCS_INDEX_POS 22
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#define MAC_CFG_DESC_TX_0_MCS_INDEX_LEN 5
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#define MAC_CFG_DESC_TX_0_MCS_INDEX_MSK 0x7C00000
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#define MAC_CFG_DESC_TX_0_MCS_EN_POS 27
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#define MAC_CFG_DESC_TX_0_MCS_EN_LEN 1
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#define MAC_CFG_DESC_TX_0_MCS_EN_MSK 0x8000000
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#define MAC_CFG_DESC_TX_0_SN_PRESERVED_POS 31
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#define MAC_CFG_DESC_TX_0_SN_PRESERVED_LEN 1
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#define MAC_CFG_DESC_TX_0_SN_PRESERVED_MSK 0x80000000
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/* TX MAC Dword 1 */
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#define MAC_CFG_DESC_TX_1_PKT_MODE_POS 0
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#define MAC_CFG_DESC_TX_1_PKT_MODE_LEN 4
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#define MAC_CFG_DESC_TX_1_PKT_MODE_MSK 0xF
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#define MAC_CFG_DESC_TX_1_PKT_MODE_EN_POS 4
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#define MAC_CFG_DESC_TX_1_PKT_MODE_EN_LEN 1
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#define MAC_CFG_DESC_TX_1_PKT_MODE_EN_MSK 0x10
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#define MAC_CFG_DESC_TX_1_ACK_POLICY_EN_POS 15
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#define MAC_CFG_DESC_TX_1_ACK_POLICY_EN_LEN 1
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#define MAC_CFG_DESC_TX_1_ACK_POLICY_EN_MSK 0x8000
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#define MAC_CFG_DESC_TX_1_DST_INDEX_POS 16
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#define MAC_CFG_DESC_TX_1_DST_INDEX_LEN 4
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#define MAC_CFG_DESC_TX_1_DST_INDEX_MSK 0xF0000
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#define MAC_CFG_DESC_TX_1_DST_INDEX_EN_POS 20
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#define MAC_CFG_DESC_TX_1_DST_INDEX_EN_LEN 1
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#define MAC_CFG_DESC_TX_1_DST_INDEX_EN_MSK 0x100000
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#define MAC_CFG_DESC_TX_1_ACK_POLICY_POS 21
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#define MAC_CFG_DESC_TX_1_ACK_POLICY_LEN 2
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#define MAC_CFG_DESC_TX_1_ACK_POLICY_MSK 0x600000
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#define MAC_CFG_DESC_TX_1_LIFETIME_EN_POS 23
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#define MAC_CFG_DESC_TX_1_LIFETIME_EN_LEN 1
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#define MAC_CFG_DESC_TX_1_LIFETIME_EN_MSK 0x800000
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#define MAC_CFG_DESC_TX_1_MAX_RETRY_POS 24
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#define MAC_CFG_DESC_TX_1_MAX_RETRY_LEN 7
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#define MAC_CFG_DESC_TX_1_MAX_RETRY_MSK 0x7F000000
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#define MAC_CFG_DESC_TX_1_MAX_RETRY_EN_POS 31
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#define MAC_CFG_DESC_TX_1_MAX_RETRY_EN_LEN 1
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#define MAC_CFG_DESC_TX_1_MAX_RETRY_EN_MSK 0x80000000
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/* TX MAC Dword 2 */
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#define MAC_CFG_DESC_TX_2_NUM_OF_DESCRIPTORS_POS 0
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#define MAC_CFG_DESC_TX_2_NUM_OF_DESCRIPTORS_LEN 8
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#define MAC_CFG_DESC_TX_2_NUM_OF_DESCRIPTORS_MSK 0xFF
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#define MAC_CFG_DESC_TX_2_RESERVED_POS 8
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#define MAC_CFG_DESC_TX_2_RESERVED_LEN 10
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#define MAC_CFG_DESC_TX_2_RESERVED_MSK 0x3FF00
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#define MAC_CFG_DESC_TX_2_L2_TRANSLATION_TYPE_POS 18
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#define MAC_CFG_DESC_TX_2_L2_TRANSLATION_TYPE_LEN 2
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#define MAC_CFG_DESC_TX_2_L2_TRANSLATION_TYPE_MSK 0xC0000
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#define MAC_CFG_DESC_TX_2_SNAP_HDR_INSERTION_EN_POS 20
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#define MAC_CFG_DESC_TX_2_SNAP_HDR_INSERTION_EN_LEN 1
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#define MAC_CFG_DESC_TX_2_SNAP_HDR_INSERTION_EN_MSK 0x100000
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#define MAC_CFG_DESC_TX_2_VLAN_REMOVAL_EN_POS 21
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#define MAC_CFG_DESC_TX_2_VLAN_REMOVAL_EN_LEN 1
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#define MAC_CFG_DESC_TX_2_VLAN_REMOVAL_EN_MSK 0x200000
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/* TX MAC Dword 3 */
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#define MAC_CFG_DESC_TX_3_UCODE_CMD_POS 0
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#define MAC_CFG_DESC_TX_3_UCODE_CMD_LEN 32
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#define MAC_CFG_DESC_TX_3_UCODE_CMD_MSK 0xFFFFFFFF
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/* TX DMA Dword 0 */
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#define DMA_CFG_DESC_TX_0_L4_LENGTH_POS 0
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#define DMA_CFG_DESC_TX_0_L4_LENGTH_LEN 8
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#define DMA_CFG_DESC_TX_0_L4_LENGTH_MSK 0xFF
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#define DMA_CFG_DESC_TX_0_CMD_EOP_POS 8
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#define DMA_CFG_DESC_TX_0_CMD_EOP_LEN 1
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#define DMA_CFG_DESC_TX_0_CMD_EOP_MSK 0x100
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#define DMA_CFG_DESC_TX_0_CMD_MARK_WB_POS 9
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#define DMA_CFG_DESC_TX_0_CMD_MARK_WB_LEN 1
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#define DMA_CFG_DESC_TX_0_CMD_MARK_WB_MSK 0x200
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#define DMA_CFG_DESC_TX_0_CMD_DMA_IT_POS 10
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#define DMA_CFG_DESC_TX_0_CMD_DMA_IT_LEN 1
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#define DMA_CFG_DESC_TX_0_CMD_DMA_IT_MSK 0x400
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#define DMA_CFG_DESC_TX_0_SEGMENT_BUF_DETAILS_POS 11
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#define DMA_CFG_DESC_TX_0_SEGMENT_BUF_DETAILS_LEN 2
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#define DMA_CFG_DESC_TX_0_SEGMENT_BUF_DETAILS_MSK 0x1800
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#define DMA_CFG_DESC_TX_0_TCP_SEG_EN_POS 13
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#define DMA_CFG_DESC_TX_0_TCP_SEG_EN_LEN 1
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#define DMA_CFG_DESC_TX_0_TCP_SEG_EN_MSK 0x2000
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#define DMA_CFG_DESC_TX_0_IPV4_CHECKSUM_EN_POS 14
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#define DMA_CFG_DESC_TX_0_IPV4_CHECKSUM_EN_LEN 1
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#define DMA_CFG_DESC_TX_0_IPV4_CHECKSUM_EN_MSK 0x4000
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#define DMA_CFG_DESC_TX_0_TCP_UDP_CHECKSUM_EN_POS 15
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#define DMA_CFG_DESC_TX_0_TCP_UDP_CHECKSUM_EN_LEN 1
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#define DMA_CFG_DESC_TX_0_TCP_UDP_CHECKSUM_EN_MSK 0x8000
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#define DMA_CFG_DESC_TX_0_QID_POS 16
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#define DMA_CFG_DESC_TX_0_QID_LEN 5
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#define DMA_CFG_DESC_TX_0_QID_MSK 0x1F0000
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#define DMA_CFG_DESC_TX_0_PSEUDO_HEADER_CALC_EN_POS 21
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#define DMA_CFG_DESC_TX_0_PSEUDO_HEADER_CALC_EN_LEN 1
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#define DMA_CFG_DESC_TX_0_PSEUDO_HEADER_CALC_EN_MSK 0x200000
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#define DMA_CFG_DESC_TX_0_L4_TYPE_POS 30
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#define DMA_CFG_DESC_TX_0_L4_TYPE_LEN 2
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#define DMA_CFG_DESC_TX_0_L4_TYPE_MSK 0xC0000000 /* L4 type: 0-UDP, 2-TCP */
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#define DMA_CFG_DESC_TX_OFFLOAD_CFG_MAC_LEN_POS 0
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#define DMA_CFG_DESC_TX_OFFLOAD_CFG_MAC_LEN_LEN 7
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#define DMA_CFG_DESC_TX_OFFLOAD_CFG_MAC_LEN_MSK 0x7F /* MAC hdr len */
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#define DMA_CFG_DESC_TX_OFFLOAD_CFG_L3T_IPV4_POS 7
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#define DMA_CFG_DESC_TX_OFFLOAD_CFG_L3T_IPV4_LEN 1
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#define DMA_CFG_DESC_TX_OFFLOAD_CFG_L3T_IPV4_MSK 0x80 /* 1-IPv4, 0-IPv6 */
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#define TX_DMA_STATUS_DU BIT(0)
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struct vring_tx_dma {
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u32 d0;
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struct vring_dma_addr addr;
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u8 ip_length;
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u8 b11; /* 0..6: mac_length; 7:ip_version */
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u8 error; /* 0..2: err; 3..7: reserved; */
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u8 status; /* 0: used; 1..7; reserved */
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__le16 length;
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} __packed;
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/*
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* Rx descriptor - MAC part
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* [dword 0]
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* bit 0.. 3 : tid:4 The QoS (b3-0) TID Field
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* bit 4.. 6 : connection_id:3 :The Source index that was found during
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* Parsing the TA. This field is used to define the source of the packet
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* bit 7 : reserved:1
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* bit 8.. 9 : mac_id:2 : The MAC virtual Ring number (always zero)
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* bit 10..11 : frame_type:2 : The FC Control (b3-2) - MPDU Type
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* (management, data, control and extension)
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* bit 12..15 : frame_subtype:4 : The FC Control (b7-4) - Frame Subtype
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* bit 16..27 : seq_number:12 The received Sequence number field
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* bit 28..31 : extended:4 extended subtype
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* [dword 1]
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* bit 0.. 3 : reserved
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* bit 4.. 5 : key_id:2
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* bit 6 : decrypt_bypass:1
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* bit 7 : security:1
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* bit 8.. 9 : ds_bits:2
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* bit 10 : a_msdu_present:1 from qos header
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* bit 11 : a_msdu_type:1 from qos header
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* bit 12 : a_mpdu:1 part of AMPDU aggregation
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* bit 13 : broadcast:1
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* bit 14 : mutlicast:1
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* bit 15 : reserved:1
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* bit 16..20 : rx_mac_qid:5 The Queue Identifier that the packet
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* is received from
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* bit 21..24 : mcs:4
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* bit 25..28 : mic_icr:4
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* bit 29..31 : reserved:3
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* [dword 2]
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* bit 0.. 2 : time_slot:3 The timeslot that the MPDU is received
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* bit 3 : fc_protocol_ver:1 The FC Control (b0) - Protocol Version
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* bit 4 : fc_order:1 The FC Control (b15) -Order
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* bit 5.. 7 : qos_ack_policy:3 The QoS (b6-5) ack policy Field
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* bit 8 : esop:1 The QoS (b4) ESOP field
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* bit 9 : qos_rdg_more_ppdu:1 The QoS (b9) RDG field
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* bit 10..14 : qos_reserved:5 The QoS (b14-10) Reserved field
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* bit 15 : qos_ac_constraint:1
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* bit 16..31 : pn_15_0:16 low 2 bytes of PN
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* [dword 3]
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* bit 0..31 : pn_47_16:32 high 4 bytes of PN
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*/
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struct vring_rx_mac {
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u32 d0;
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u32 d1;
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u16 w4;
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u16 pn_15_0;
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u32 pn_47_16;
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} __packed;
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/*
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* Rx descriptor - DMA part
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* [dword 0]
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* bit 0.. 7 : l4_length:8 layer 4 length
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* bit 8.. 9 : reserved:2
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* bit 10 : cmd_dma_it:1
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* bit 11..15 : reserved:5
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* bit 16..29 : phy_info_length:14
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* bit 30..31 : l4_type:2 valid if the L4I bit is set in the status field
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* [dword 1]
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* bit 0..31 : addr_low:32 The payload buffer low address
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* [dword 2]
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* bit 0..15 : addr_high:16 The payload buffer high address
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* bit 16..23 : ip_length:8
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* bit 24..30 : mac_length:7
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* bit 31 : ip_version:1
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* [dword 3]
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* [byte 12] error
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* [byte 13] status
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* bit 0 : du:1
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* bit 1 : eop:1
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* bit 2 : error:1
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* bit 3 : mi:1
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* bit 4 : l3_identified:1
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* bit 5 : l4_identified:1
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* bit 6 : phy_info_included:1
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* bit 7 : reserved:1
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* [word 7] length
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*
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*/
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#define RX_DMA_D0_CMD_DMA_IT BIT(10)
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/* Error field, offload bits */
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#define RX_DMA_ERROR_L3_ERR BIT(4)
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#define RX_DMA_ERROR_L4_ERR BIT(5)
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/* Status field */
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#define RX_DMA_STATUS_DU BIT(0)
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#define RX_DMA_STATUS_ERROR BIT(2)
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#define RX_DMA_STATUS_L3_IDENT BIT(4)
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#define RX_DMA_STATUS_L4_IDENT BIT(5)
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#define RX_DMA_STATUS_PHY_INFO BIT(6)
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struct vring_rx_dma {
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u32 d0;
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struct vring_dma_addr addr;
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u8 ip_length;
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u8 b11;
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u8 error;
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u8 status;
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__le16 length;
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} __packed;
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struct vring_tx_desc {
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struct vring_tx_mac mac;
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struct vring_tx_dma dma;
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} __packed;
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struct vring_rx_desc {
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struct vring_rx_mac mac;
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struct vring_rx_dma dma;
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} __packed;
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union vring_desc {
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struct vring_tx_desc tx;
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struct vring_rx_desc rx;
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} __packed;
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static inline int wil_rxdesc_tid(struct vring_rx_desc *d)
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{
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return WIL_GET_BITS(d->mac.d0, 0, 3);
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}
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static inline int wil_rxdesc_cid(struct vring_rx_desc *d)
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{
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return WIL_GET_BITS(d->mac.d0, 4, 6);
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}
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static inline int wil_rxdesc_mid(struct vring_rx_desc *d)
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{
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return WIL_GET_BITS(d->mac.d0, 8, 9);
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}
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static inline int wil_rxdesc_ftype(struct vring_rx_desc *d)
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{
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return WIL_GET_BITS(d->mac.d0, 10, 11);
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}
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static inline int wil_rxdesc_subtype(struct vring_rx_desc *d)
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{
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return WIL_GET_BITS(d->mac.d0, 12, 15);
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}
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static inline int wil_rxdesc_seq(struct vring_rx_desc *d)
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{
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return WIL_GET_BITS(d->mac.d0, 16, 27);
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}
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static inline int wil_rxdesc_ext_subtype(struct vring_rx_desc *d)
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{
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return WIL_GET_BITS(d->mac.d0, 28, 31);
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}
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static inline int wil_rxdesc_ds_bits(struct vring_rx_desc *d)
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{
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return WIL_GET_BITS(d->mac.d1, 8, 9);
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}
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static inline int wil_rxdesc_mcs(struct vring_rx_desc *d)
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{
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return WIL_GET_BITS(d->mac.d1, 21, 24);
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}
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static inline int wil_rxdesc_phy_length(struct vring_rx_desc *d)
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|
{
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return WIL_GET_BITS(d->dma.d0, 16, 29);
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}
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static inline struct vring_rx_desc *wil_skb_rxdesc(struct sk_buff *skb)
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|
{
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return (void *)skb->cb;
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}
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void wil_netif_rx_any(struct sk_buff *skb, struct net_device *ndev);
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void wil_rx_reorder(struct wil6210_priv *wil, struct sk_buff *skb);
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struct wil_tid_ampdu_rx *wil_tid_ampdu_rx_alloc(struct wil6210_priv *wil,
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int size, u16 ssn);
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void wil_tid_ampdu_rx_free(struct wil6210_priv *wil,
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struct wil_tid_ampdu_rx *r);
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#endif /* WIL6210_TXRX_H */
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