linux_dsm_epyc7002/drivers/net/wireless/ath/wil6210/txrx_edma.h
Maya Erez cbebe277be wil6210: increase RX rings and RX buff array size
In Talyn-MB, the 11ad throughput is higher and performance drops
may occur in the current RX configuration due to unavailability
of Rx buffers.
Increase the RX descriptor ring, RX status ring and number of RX
buffers to stabilize the performance in high throughput.

Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-11-06 18:02:21 +02:00

569 lines
17 KiB
C

/*
* Copyright (c) 2012-2016,2018, The Linux Foundation. All rights reserved.
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef WIL6210_TXRX_EDMA_H
#define WIL6210_TXRX_EDMA_H
#include "wil6210.h"
/* limit status ring size in range [ring size..max ring size] */
#define WIL_SRING_SIZE_ORDER_MIN (WIL_RING_SIZE_ORDER_MIN)
#define WIL_SRING_SIZE_ORDER_MAX (WIL_RING_SIZE_ORDER_MAX)
/* RX sring order should be bigger than RX ring order */
#define WIL_RX_SRING_SIZE_ORDER_DEFAULT (12)
#define WIL_TX_SRING_SIZE_ORDER_DEFAULT (12)
#define WIL_RX_BUFF_ARR_SIZE_DEFAULT (2600)
#define WIL_DEFAULT_RX_STATUS_RING_ID 0
#define WIL_RX_DESC_RING_ID 0
#define WIL_RX_STATUS_IRQ_IDX 0
#define WIL_TX_STATUS_IRQ_IDX 1
#define WIL_EDMA_AGG_WATERMARK (0xffff)
#define WIL_EDMA_AGG_WATERMARK_POS (16)
#define WIL_EDMA_IDLE_TIME_LIMIT_USEC (50)
#define WIL_EDMA_TIME_UNIT_CLK_CYCLES (330) /* fits 1 usec */
/* Error field */
#define WIL_RX_EDMA_ERROR_MIC (1)
#define WIL_RX_EDMA_ERROR_KEY (2) /* Key missing */
#define WIL_RX_EDMA_ERROR_REPLAY (3)
#define WIL_RX_EDMA_ERROR_AMSDU (4)
#define WIL_RX_EDMA_ERROR_FCS (7)
#define WIL_RX_EDMA_ERROR_L3_ERR (BIT(0) | BIT(1))
#define WIL_RX_EDMA_ERROR_L4_ERR (BIT(0) | BIT(1))
#define WIL_RX_EDMA_DLPF_LU_MISS_BIT BIT(11)
#define WIL_RX_EDMA_DLPF_LU_MISS_CID_TID_MASK 0x7
#define WIL_RX_EDMA_DLPF_LU_HIT_CID_TID_MASK 0xf
#define WIL_RX_EDMA_DLPF_LU_MISS_CID_POS 2
#define WIL_RX_EDMA_DLPF_LU_HIT_CID_POS 4
#define WIL_RX_EDMA_DLPF_LU_MISS_TID_POS 5
#define WIL_RX_EDMA_MID_VALID_BIT BIT(22)
#define WIL_EDMA_DESC_TX_MAC_CFG_0_QID_POS 16
#define WIL_EDMA_DESC_TX_MAC_CFG_0_QID_LEN 6
#define WIL_EDMA_DESC_TX_CFG_EOP_POS 0
#define WIL_EDMA_DESC_TX_CFG_EOP_LEN 1
#define WIL_EDMA_DESC_TX_CFG_TSO_DESC_TYPE_POS 3
#define WIL_EDMA_DESC_TX_CFG_TSO_DESC_TYPE_LEN 2
#define WIL_EDMA_DESC_TX_CFG_SEG_EN_POS 5
#define WIL_EDMA_DESC_TX_CFG_SEG_EN_LEN 1
#define WIL_EDMA_DESC_TX_CFG_INSERT_IP_CHKSUM_POS 6
#define WIL_EDMA_DESC_TX_CFG_INSERT_IP_CHKSUM_LEN 1
#define WIL_EDMA_DESC_TX_CFG_INSERT_TCP_CHKSUM_POS 7
#define WIL_EDMA_DESC_TX_CFG_INSERT_TCP_CHKSUM_LEN 1
#define WIL_EDMA_DESC_TX_CFG_L4_TYPE_POS 15
#define WIL_EDMA_DESC_TX_CFG_L4_TYPE_LEN 1
#define WIL_EDMA_DESC_TX_CFG_PSEUDO_HEADER_CALC_EN_POS 5
#define WIL_EDMA_DESC_TX_CFG_PSEUDO_HEADER_CALC_EN_LEN 1
/* Enhanced Rx descriptor - MAC part
* [dword 0] : Reserved
* [dword 1] : Reserved
* [dword 2] : Reserved
* [dword 3]
* bit 0..15 : Buffer ID
* bit 16..31 : Reserved
*/
struct wil_ring_rx_enhanced_mac {
u32 d[3];
__le16 buff_id;
u16 reserved;
} __packed;
/* Enhanced Rx descriptor - DMA part
* [dword 0] - Reserved
* [dword 1]
* bit 0..31 : addr_low:32 The payload buffer address, bits 0-31
* [dword 2]
* bit 0..15 : addr_high_low:16 The payload buffer address, bits 32-47
* bit 16..31 : Reserved
* [dword 3]
* bit 0..15 : addr_high_high:16 The payload buffer address, bits 48-63
* bit 16..31 : length
*/
struct wil_ring_rx_enhanced_dma {
u32 d0;
struct wil_ring_dma_addr addr;
u16 w5;
__le16 addr_high_high;
__le16 length;
} __packed;
struct wil_rx_enhanced_desc {
struct wil_ring_rx_enhanced_mac mac;
struct wil_ring_rx_enhanced_dma dma;
} __packed;
/* Enhanced Tx descriptor - DMA part
* [dword 0]
* Same as legacy
* [dword 1]
* bit 0..31 : addr_low:32 The payload buffer address, bits 0-31
* [dword 2]
* bit 0..15 : addr_high_low:16 The payload buffer address, bits 32-47
* bit 16..23 : ip_length:8 The IP header length for the TX IP checksum
* offload feature
* bit 24..30 : mac_length:7
* bit 31 : ip_version:1 1 - IPv4, 0 - IPv6
* [dword 3]
* bit 0..15 : addr_high_high:16 The payload buffer address, bits 48-63
* bit 16..31 : length
*/
struct wil_ring_tx_enhanced_dma {
u8 l4_hdr_len;
u8 cmd;
u16 w1;
struct wil_ring_dma_addr addr;
u8 ip_length;
u8 b11; /* 0..6: mac_length; 7:ip_version */
__le16 addr_high_high;
__le16 length;
} __packed;
/* Enhanced Tx descriptor - MAC part
* [dword 0]
* bit 0.. 9 : lifetime_expiry_value:10
* bit 10 : interrupt_en:1
* bit 11 : status_en:1
* bit 12..13 : txss_override:2
* bit 14 : timestamp_insertion:1
* bit 15 : duration_preserve:1
* bit 16..21 : reserved0:6
* bit 22..26 : mcs_index:5
* bit 27 : mcs_en:1
* bit 28..30 : reserved1:3
* bit 31 : sn_preserved:1
* [dword 1]
* bit 0.. 3 : pkt_mode:4
* bit 4 : pkt_mode_en:1
* bit 5..14 : reserved0:10
* bit 15 : ack_policy_en:1
* bit 16..19 : dst_index:4
* bit 20 : dst_index_en:1
* bit 21..22 : ack_policy:2
* bit 23 : lifetime_en:1
* bit 24..30 : max_retry:7
* bit 31 : max_retry_en:1
* [dword 2]
* bit 0.. 7 : num_of_descriptors:8
* bit 8..17 : reserved:10
* bit 18..19 : l2_translation_type:2 00 - bypass, 01 - 802.3, 10 - 802.11
* bit 20 : snap_hdr_insertion_en:1
* bit 21 : vlan_removal_en:1
* bit 22..23 : reserved0:2
* bit 24 : Dest ID extension:1
* bit 25..31 : reserved0:7
* [dword 3]
* bit 0..15 : tso_mss:16
* bit 16..31 : descriptor_scratchpad:16 - mailbox between driver and ucode
*/
struct wil_ring_tx_enhanced_mac {
u32 d[3];
__le16 tso_mss;
u16 scratchpad;
} __packed;
struct wil_tx_enhanced_desc {
struct wil_ring_tx_enhanced_mac mac;
struct wil_ring_tx_enhanced_dma dma;
} __packed;
#define TX_STATUS_DESC_READY_POS 7
/* Enhanced TX status message
* [dword 0]
* bit 0.. 7 : Number of Descriptor:8 - The number of descriptors that
* are used to form the packets. It is needed for WB when
* releasing the packet
* bit 8..15 : tx_ring_id:8 The transmission ring ID that is related to
* the message
* bit 16..23 : Status:8 - The TX status Code
* 0x0 - A successful transmission
* 0x1 - Retry expired
* 0x2 - Lifetime Expired
* 0x3 - Released
* 0x4-0xFF - Reserved
* bit 24..30 : Reserved:7
* bit 31 : Descriptor Ready bit:1 - It is initiated to
* zero by the driver when the ring is created. It is set by the HW
* to one for each completed status message. Each wrap around,
* the DR bit value is flipped.
* [dword 1]
* bit 0..31 : timestamp:32 - Set when MPDU is transmitted.
* [dword 2]
* bit 0.. 4 : MCS:5 - The transmitted MCS value
* bit 5 : Reserved:1
* bit 6.. 7 : CB mode:2 - 0-DMG 1-EDMG 2-Wide
* bit 8..12 : QID:5 - The QID that was used for the transmission
* bit 13..15 : Reserved:3
* bit 16..20 : Num of MSDUs:5 - Number of MSDUs in the aggregation
* bit 21..22 : Reserved:2
* bit 23 : Retry:1 - An indication that the transmission was retried
* bit 24..31 : TX-Sector:8 - the antenna sector that was used for
* transmission
* [dword 3]
* bit 0..11 : Sequence number:12 - The Sequence Number that was used
* for the MPDU transmission
* bit 12..31 : Reserved:20
*/
struct wil_ring_tx_status {
u8 num_descriptors;
u8 ring_id;
u8 status;
u8 desc_ready; /* Only the last bit should be set */
u32 timestamp;
u32 d2;
u16 seq_number; /* Only the first 12 bits */
u16 w7;
} __packed;
/* Enhanced Rx status message - compressed part
* [dword 0]
* bit 0.. 2 : L2 Rx Status:3 - The L2 packet reception Status
* 0-Success, 1-MIC Error, 2-Key Error, 3-Replay Error,
* 4-A-MSDU Error, 5-Reserved, 6-Reserved, 7-FCS Error
* bit 3.. 4 : L3 Rx Status:2 - Bit0 - L3I - L3 identified and checksum
* calculated, Bit1- L3Err - IPv4 Checksum Error
* bit 5.. 6 : L4 Rx Status:2 - Bit0 - L4I - L4 identified and checksum
* calculated, Bit1- L4Err - TCP/UDP Checksum Error
* bit 7 : Reserved:1
* bit 8..19 : Flow ID:12 - MSDU flow ID
* bit 20..21 : MID:2 - The MAC ID
* bit 22 : MID_V:1 - The MAC ID field is valid
* bit 23 : L3T:1 - IP types: 0-IPv6, 1-IPv4
* bit 24 : L4T:1 - Layer 4 Type: 0-UDP, 1-TCP
* bit 25 : BC:1 - The received MPDU is broadcast
* bit 26 : MC:1 - The received MPDU is multicast
* bit 27 : Raw:1 - The MPDU received with no translation
* bit 28 : Sec:1 - The FC control (b14) - Frame Protected
* bit 29 : Error:1 - An error is set when (L2 status != 0) ||
* (L3 status == 3) || (L4 status == 3)
* bit 30 : EOP:1 - End of MSDU signaling. It is set to mark the end
* of the transfer, otherwise the status indicates buffer
* only completion.
* bit 31 : Descriptor Ready bit:1 - It is initiated to
* zero by the driver when the ring is created. It is set
* by the HW to one for each completed status message.
* Each wrap around, the DR bit value is flipped.
* [dword 1]
* bit 0.. 5 : MAC Len:6 - The number of bytes that are used for L2 header
* bit 6..11 : IPLEN:6 - The number of DW that are used for L3 header
* bit 12..15 : I4Len:4 - The number of DW that are used for L4 header
* bit 16..21 : MCS:6 - The received MCS field from the PLCP Header
* bit 22..23 : CB mode:2 - The CB Mode: 0-DMG, 1-EDMG, 2-Wide
* bit 24..27 : Data Offset:4 - The data offset, a code that describe the
* payload shift from the beginning of the buffer:
* 0 - 0 Bytes, 3 - 2 Bytes
* bit 28 : A-MSDU Present:1 - The QoS (b7) A-MSDU present field
* bit 29 : A-MSDU Type:1 The QoS (b8) A-MSDU Type field
* bit 30 : A-MPDU:1 - Packet is part of aggregated MPDU
* bit 31 : Key ID:1 - The extracted Key ID from the encryption header
* [dword 2]
* bit 0..15 : Buffer ID:16 - The Buffer Identifier
* bit 16..31 : Length:16 - It indicates the valid bytes that are stored
* in the current descriptor buffer. For multiple buffer
* descriptor, SW need to sum the total descriptor length
* in all buffers to produce the packet length
* [dword 3]
* bit 0..31 : timestamp:32 - The MPDU Timestamp.
*/
struct wil_rx_status_compressed {
u32 d0;
u32 d1;
__le16 buff_id;
__le16 length;
u32 timestamp;
} __packed;
/* Enhanced Rx status message - extension part
* [dword 0]
* bit 0.. 4 : QID:5 - The Queue Identifier that the packet is received
* from
* bit 5.. 7 : Reserved:3
* bit 8..11 : TID:4 - The QoS (b3-0) TID Field
* bit 12..15 Source index:4 - The Source index that was found
during Parsing the TA. This field is used to define the
source of the packet
* bit 16..18 : Destination index:3 - The Destination index that
was found during Parsing the RA.
* bit 19..20 : DS Type:2 - The FC Control (b9-8) - From / To DS
* bit 21..22 : MIC ICR:2 - this signal tells the DMA to assert an
interrupt after it writes the packet
* bit 23 : ESOP:1 - The QoS (b4) ESOP field
* bit 24 : RDG:1
* bit 25..31 : Reserved:7
* [dword 1]
* bit 0.. 1 : Frame Type:2 - The FC Control (b3-2) - MPDU Type
(management, data, control and extension)
* bit 2.. 5 : Syb type:4 - The FC Control (b7-4) - Frame Subtype
* bit 6..11 : Ext sub type:6 - The FC Control (b11-8) - Frame Extended
* Subtype
* bit 12..13 : ACK Policy:2 - The QoS (b6-5) ACK Policy fields
* bit 14 : DECRYPT_BYP:1 - The MPDU is bypass by the decryption unit
* bit 15..23 : Reserved:9
* bit 24..31 : RSSI/SNR:8 - The RSSI / SNR measurement for the received
* MPDU
* [dword 2]
* bit 0..11 : SN:12 - The received Sequence number field
* bit 12..15 : Reserved:4
* bit 16..31 : PN bits [15:0]:16
* [dword 3]
* bit 0..31 : PN bits [47:16]:32
*/
struct wil_rx_status_extension {
u32 d0;
u32 d1;
__le16 seq_num; /* only lower 12 bits */
u16 pn_15_0;
u32 pn_47_16;
} __packed;
struct wil_rx_status_extended {
struct wil_rx_status_compressed comp;
struct wil_rx_status_extension ext;
} __packed;
static inline void *wil_skb_rxstatus(struct sk_buff *skb)
{
return (void *)skb->cb;
}
static inline __le16 wil_rx_status_get_length(void *msg)
{
return ((struct wil_rx_status_compressed *)msg)->length;
}
static inline u8 wil_rx_status_get_mcs(void *msg)
{
return WIL_GET_BITS(((struct wil_rx_status_compressed *)msg)->d1,
16, 21);
}
static inline u16 wil_rx_status_get_flow_id(void *msg)
{
return WIL_GET_BITS(((struct wil_rx_status_compressed *)msg)->d0,
8, 19);
}
static inline u8 wil_rx_status_get_mcast(void *msg)
{
return WIL_GET_BITS(((struct wil_rx_status_compressed *)msg)->d0,
26, 26);
}
/**
* In case of DLPF miss the parsing of flow Id should be as follows:
* dest_id:2
* src_id :3 - cid
* tid:3
* Otherwise:
* tid:4
* cid:4
*/
static inline u8 wil_rx_status_get_cid(void *msg)
{
u16 val = wil_rx_status_get_flow_id(msg);
if (val & WIL_RX_EDMA_DLPF_LU_MISS_BIT)
/* CID is in bits 2..4 */
return (val >> WIL_RX_EDMA_DLPF_LU_MISS_CID_POS) &
WIL_RX_EDMA_DLPF_LU_MISS_CID_TID_MASK;
else
/* CID is in bits 4..7 */
return (val >> WIL_RX_EDMA_DLPF_LU_HIT_CID_POS) &
WIL_RX_EDMA_DLPF_LU_HIT_CID_TID_MASK;
}
static inline u8 wil_rx_status_get_tid(void *msg)
{
u16 val = wil_rx_status_get_flow_id(msg);
if (val & WIL_RX_EDMA_DLPF_LU_MISS_BIT)
/* TID is in bits 5..7 */
return (val >> WIL_RX_EDMA_DLPF_LU_MISS_TID_POS) &
WIL_RX_EDMA_DLPF_LU_MISS_CID_TID_MASK;
else
/* TID is in bits 0..3 */
return val & WIL_RX_EDMA_DLPF_LU_MISS_CID_TID_MASK;
}
static inline int wil_rx_status_get_desc_rdy_bit(void *msg)
{
return WIL_GET_BITS(((struct wil_rx_status_compressed *)msg)->d0,
31, 31);
}
static inline int wil_rx_status_get_eop(void *msg) /* EoP = End of Packet */
{
return WIL_GET_BITS(((struct wil_rx_status_compressed *)msg)->d0,
30, 30);
}
static inline __le16 wil_rx_status_get_buff_id(void *msg)
{
return ((struct wil_rx_status_compressed *)msg)->buff_id;
}
static inline u8 wil_rx_status_get_data_offset(void *msg)
{
u8 val = WIL_GET_BITS(((struct wil_rx_status_compressed *)msg)->d1,
24, 27);
switch (val) {
case 0: return 0;
case 3: return 2;
default: return 0xFF;
}
}
static inline int wil_rx_status_get_frame_type(struct wil6210_priv *wil,
void *msg)
{
if (wil->use_compressed_rx_status)
return IEEE80211_FTYPE_DATA;
return WIL_GET_BITS(((struct wil_rx_status_extended *)msg)->ext.d1,
0, 1) << 2;
}
static inline int wil_rx_status_get_fc1(struct wil6210_priv *wil, void *msg)
{
if (wil->use_compressed_rx_status)
return 0;
return WIL_GET_BITS(((struct wil_rx_status_extended *)msg)->ext.d1,
0, 5) << 2;
}
static inline __le16 wil_rx_status_get_seq(struct wil6210_priv *wil, void *msg)
{
if (wil->use_compressed_rx_status)
return 0;
return ((struct wil_rx_status_extended *)msg)->ext.seq_num;
}
static inline u8 wil_rx_status_get_retry(void *msg)
{
/* retry bit is missing in EDMA HW. return 1 to be on the safe side */
return 1;
}
static inline int wil_rx_status_get_mid(void *msg)
{
if (!(((struct wil_rx_status_compressed *)msg)->d0 &
WIL_RX_EDMA_MID_VALID_BIT))
return 0; /* use the default MID */
return WIL_GET_BITS(((struct wil_rx_status_compressed *)msg)->d0,
20, 21);
}
static inline int wil_rx_status_get_error(void *msg)
{
return WIL_GET_BITS(((struct wil_rx_status_compressed *)msg)->d0,
29, 29);
}
static inline int wil_rx_status_get_l2_rx_status(void *msg)
{
return WIL_GET_BITS(((struct wil_rx_status_compressed *)msg)->d0,
0, 2);
}
static inline int wil_rx_status_get_l3_rx_status(void *msg)
{
return WIL_GET_BITS(((struct wil_rx_status_compressed *)msg)->d0,
3, 4);
}
static inline int wil_rx_status_get_l4_rx_status(void *msg)
{
return WIL_GET_BITS(((struct wil_rx_status_compressed *)msg)->d0,
5, 6);
}
static inline int wil_rx_status_get_security(void *msg)
{
return WIL_GET_BITS(((struct wil_rx_status_compressed *)msg)->d0,
28, 28);
}
static inline u8 wil_rx_status_get_key_id(void *msg)
{
return WIL_GET_BITS(((struct wil_rx_status_compressed *)msg)->d1,
31, 31);
}
static inline u8 wil_tx_status_get_mcs(struct wil_ring_tx_status *msg)
{
return WIL_GET_BITS(msg->d2, 0, 4);
}
static inline u32 wil_ring_next_head(struct wil_ring *ring)
{
return (ring->swhead + 1) % ring->size;
}
static inline void wil_desc_set_addr_edma(struct wil_ring_dma_addr *addr,
__le16 *addr_high_high,
dma_addr_t pa)
{
addr->addr_low = cpu_to_le32(lower_32_bits(pa));
addr->addr_high = cpu_to_le16((u16)upper_32_bits(pa));
*addr_high_high = cpu_to_le16((u16)(upper_32_bits(pa) >> 16));
}
static inline
dma_addr_t wil_tx_desc_get_addr_edma(struct wil_ring_tx_enhanced_dma *dma)
{
return le32_to_cpu(dma->addr.addr_low) |
((u64)le16_to_cpu(dma->addr.addr_high) << 32) |
((u64)le16_to_cpu(dma->addr_high_high) << 48);
}
static inline
dma_addr_t wil_rx_desc_get_addr_edma(struct wil_ring_rx_enhanced_dma *dma)
{
return le32_to_cpu(dma->addr.addr_low) |
((u64)le16_to_cpu(dma->addr.addr_high) << 32) |
((u64)le16_to_cpu(dma->addr_high_high) << 48);
}
void wil_configure_interrupt_moderation_edma(struct wil6210_priv *wil);
int wil_tx_sring_handler(struct wil6210_priv *wil,
struct wil_status_ring *sring);
void wil_rx_handle_edma(struct wil6210_priv *wil, int *quota);
void wil_init_txrx_ops_edma(struct wil6210_priv *wil);
#endif /* WIL6210_TXRX_EDMA_H */