diff options
Diffstat (limited to 'drivers/net/wireless/ath/ath10k/htt.h')
| -rw-r--r-- | drivers/net/wireless/ath/ath10k/htt.h | 296 |
1 files changed, 274 insertions, 22 deletions
diff --git a/drivers/net/wireless/ath/ath10k/htt.h b/drivers/net/wireless/ath/ath10k/htt.h index 9a3a8907389b..f06cf39204e2 100644 --- a/drivers/net/wireless/ath/ath10k/htt.h +++ b/drivers/net/wireless/ath/ath10k/htt.h @@ -240,14 +240,7 @@ enum htt_rx_ring_flags { #define HTT_RX_RING_FILL_LEVEL (((HTT_RX_RING_SIZE) / 2) - 1) #define HTT_RX_RING_FILL_LEVEL_DUAL_MAC (HTT_RX_RING_SIZE - 1) -struct htt_rx_ring_setup_ring32 { - __le32 fw_idx_shadow_reg_paddr; - __le32 rx_ring_base_paddr; - __le16 rx_ring_len; /* in 4-byte words */ - __le16 rx_ring_bufsize; /* rx skb size - in bytes */ - __le16 flags; /* %HTT_RX_RING_FLAGS_ */ - __le16 fw_idx_init_val; - +struct htt_rx_ring_rx_desc_offsets { /* the following offsets are in 4-byte units */ __le16 mac80211_hdr_offset; __le16 msdu_payload_offset; @@ -261,6 +254,17 @@ struct htt_rx_ring_setup_ring32 { __le16 frag_info_offset; } __packed; +struct htt_rx_ring_setup_ring32 { + __le32 fw_idx_shadow_reg_paddr; + __le32 rx_ring_base_paddr; + __le16 rx_ring_len; /* in 4-byte words */ + __le16 rx_ring_bufsize; /* rx skb size - in bytes */ + __le16 flags; /* %HTT_RX_RING_FLAGS_ */ + __le16 fw_idx_init_val; + + struct htt_rx_ring_rx_desc_offsets offsets; +} __packed; + struct htt_rx_ring_setup_ring64 { __le64 fw_idx_shadow_reg_paddr; __le64 rx_ring_base_paddr; @@ -269,17 +273,7 @@ struct htt_rx_ring_setup_ring64 { __le16 flags; /* %HTT_RX_RING_FLAGS_ */ __le16 fw_idx_init_val; - /* the following offsets are in 4-byte units */ - __le16 mac80211_hdr_offset; - __le16 msdu_payload_offset; - __le16 ppdu_start_offset; - __le16 ppdu_end_offset; - __le16 mpdu_start_offset; - __le16 mpdu_end_offset; - __le16 msdu_start_offset; - __le16 msdu_end_offset; - __le16 rx_attention_offset; - __le16 frag_info_offset; + struct htt_rx_ring_rx_desc_offsets offsets; } __packed; struct htt_rx_ring_setup_hdr { @@ -2075,12 +2069,22 @@ static inline bool ath10k_htt_rx_proc_rx_frag_ind(struct ath10k_htt *htt, return htt->rx_ops->htt_rx_proc_rx_frag_ind(htt, rx, skb); } +/* the driver strongly assumes that the rx header status be 64 bytes long, + * so all possible rx_desc structures must respect this assumption. + */ #define RX_HTT_HDR_STATUS_LEN 64 -/* This structure layout is programmed via rx ring setup +/* The rx descriptor structure layout is programmed via rx ring setup * so that FW knows how to transfer the rx descriptor to the host. - * Buffers like this are placed on the rx ring. + * Unfortunately, though, QCA6174's firmware doesn't currently behave correctly + * when modifying the structure layout of the rx descriptor beyond what it expects + * (even if it correctly programmed during the rx ring setup). + * Therefore we must keep two different memory layouts, abstract the rx descriptor + * representation and use ath10k_rx_desc_ops + * for correctly accessing rx descriptor data. */ + +/* base struct used for abstracting the rx descritor representation */ struct htt_rx_desc { union { /* This field is filled on the host using the msdu buffer @@ -2089,6 +2093,13 @@ struct htt_rx_desc { struct fw_rx_desc_base fw_desc; u32 pad; } __packed; +} __packed; + +/* rx descriptor for wcn3990 and possibly extensible for newer cards + * Buffers like this are placed on the rx ring. + */ +struct htt_rx_desc_v2 { + struct htt_rx_desc base; struct { struct rx_attention attention; struct rx_frag_info frag_info; @@ -2103,6 +2114,240 @@ struct htt_rx_desc { u8 msdu_payload[]; }; +/* QCA6174, QCA988x, QCA99x0 dedicated rx descriptor to make sure their firmware + * works correctly. We keep a single rx descriptor for all these three + * families of cards because from tests it seems to be the most stable solution, + * e.g. having a rx descriptor only for QCA6174 seldom caused firmware crashes + * during some tests. + * Buffers like this are placed on the rx ring. + */ +struct htt_rx_desc_v1 { + struct htt_rx_desc base; + struct { + struct rx_attention attention; + struct rx_frag_info_v1 frag_info; + struct rx_mpdu_start mpdu_start; + struct rx_msdu_start_v1 msdu_start; + struct rx_msdu_end_v1 msdu_end; + struct rx_mpdu_end mpdu_end; + struct rx_ppdu_start ppdu_start; + struct rx_ppdu_end_v1 ppdu_end; + } __packed; + u8 rx_hdr_status[RX_HTT_HDR_STATUS_LEN]; + u8 msdu_payload[]; +}; + +/* rx_desc abstraction */ +struct ath10k_htt_rx_desc_ops { + /* These fields are mandatory, they must be specified in any instance */ + + /* sizeof() of the rx_desc structure used by this hw */ + size_t rx_desc_size; + + /* offset of msdu_payload inside the rx_desc structure used by this hw */ + size_t rx_desc_msdu_payload_offset; + + /* These fields are options. + * When a field is not provided the default implementation gets used + * (see the ath10k_rx_desc_* operations below for more info about the defaults) + */ + bool (*rx_desc_get_msdu_limit_error)(struct htt_rx_desc *rxd); + int (*rx_desc_get_l3_pad_bytes)(struct htt_rx_desc *rxd); + + /* Safely cast from a void* buffer containing an rx descriptor + * to the proper rx_desc structure + */ + struct htt_rx_desc *(*rx_desc_from_raw_buffer)(void *buff); + + void (*rx_desc_get_offsets)(struct htt_rx_ring_rx_desc_offsets *offs); + struct rx_attention *(*rx_desc_get_attention)(struct htt_rx_desc *rxd); + struct rx_frag_info_common *(*rx_desc_get_frag_info)(struct htt_rx_desc *rxd); + struct rx_mpdu_start *(*rx_desc_get_mpdu_start)(struct htt_rx_desc *rxd); + struct rx_mpdu_end *(*rx_desc_get_mpdu_end)(struct htt_rx_desc *rxd); + struct rx_msdu_start_common *(*rx_desc_get_msdu_start)(struct htt_rx_desc *rxd); + struct rx_msdu_end_common *(*rx_desc_get_msdu_end)(struct htt_rx_desc *rxd); + struct rx_ppdu_start *(*rx_desc_get_ppdu_start)(struct htt_rx_desc *rxd); + struct rx_ppdu_end_common *(*rx_desc_get_ppdu_end)(struct htt_rx_desc *rxd); + u8 *(*rx_desc_get_rx_hdr_status)(struct htt_rx_desc *rxd); + u8 *(*rx_desc_get_msdu_payload)(struct htt_rx_desc *rxd); +}; + +extern const struct ath10k_htt_rx_desc_ops qca988x_rx_desc_ops; +extern const struct ath10k_htt_rx_desc_ops qca99x0_rx_desc_ops; +extern const struct ath10k_htt_rx_desc_ops wcn3990_rx_desc_ops; + +static inline int +ath10k_htt_rx_desc_get_l3_pad_bytes(struct ath10k_hw_params *hw, struct htt_rx_desc *rxd) +{ + if (hw->rx_desc_ops->rx_desc_get_l3_pad_bytes) + return hw->rx_desc_ops->rx_desc_get_l3_pad_bytes(rxd); + return 0; +} + +static inline bool +ath10k_htt_rx_desc_msdu_limit_error(struct ath10k_hw_params *hw, struct htt_rx_desc *rxd) +{ + if (hw->rx_desc_ops->rx_desc_get_msdu_limit_error) + return hw->rx_desc_ops->rx_desc_get_msdu_limit_error(rxd); + return false; +} + +/* The default implementation of all these getters is using the old rx_desc, + * so that it is easier to define the ath10k_htt_rx_desc_ops instances. + * But probably, if new wireless cards must be supported, it would be better + * to switch the default implementation to the new rx_desc, since this would + * make the extension easier . + */ +static inline struct htt_rx_desc * +ath10k_htt_rx_desc_from_raw_buffer(struct ath10k_hw_params *hw, void *buff) +{ + if (hw->rx_desc_ops->rx_desc_from_raw_buffer) + return hw->rx_desc_ops->rx_desc_from_raw_buffer(buff); + return &((struct htt_rx_desc_v1 *)buff)->base; +} + +static inline void +ath10k_htt_rx_desc_get_offsets(struct ath10k_hw_params *hw, + struct htt_rx_ring_rx_desc_offsets *off) +{ + if (hw->rx_desc_ops->rx_desc_get_offsets) { + hw->rx_desc_ops->rx_desc_get_offsets(off); + } else { +#define desc_offset(x) (offsetof(struct htt_rx_desc_v1, x) / 4) + off->mac80211_hdr_offset = __cpu_to_le16(desc_offset(rx_hdr_status)); + off->msdu_payload_offset = __cpu_to_le16(desc_offset(msdu_payload)); + off->ppdu_start_offset = __cpu_to_le16(desc_offset(ppdu_start)); + off->ppdu_end_offset = __cpu_to_le16(desc_offset(ppdu_end)); + off->mpdu_start_offset = __cpu_to_le16(desc_offset(mpdu_start)); + off->mpdu_end_offset = __cpu_to_le16(desc_offset(mpdu_end)); + off->msdu_start_offset = __cpu_to_le16(desc_offset(msdu_start)); + off->msdu_end_offset = __cpu_to_le16(desc_offset(msdu_end)); + off->rx_attention_offset = __cpu_to_le16(desc_offset(attention)); + off->frag_info_offset = __cpu_to_le16(desc_offset(frag_info)); +#undef desc_offset + } +} + +static inline struct rx_attention * +ath10k_htt_rx_desc_get_attention(struct ath10k_hw_params *hw, struct htt_rx_desc *rxd) +{ + struct htt_rx_desc_v1 *rx_desc; + + if (hw->rx_desc_ops->rx_desc_get_attention) + return hw->rx_desc_ops->rx_desc_get_attention(rxd); + + rx_desc = container_of(rxd, struct htt_rx_desc_v1, base); + return &rx_desc->attention; +} + +static inline struct rx_frag_info_common * +ath10k_htt_rx_desc_get_frag_info(struct ath10k_hw_params *hw, struct htt_rx_desc *rxd) +{ + struct htt_rx_desc_v1 *rx_desc; + + if (hw->rx_desc_ops->rx_desc_get_frag_info) + return hw->rx_desc_ops->rx_desc_get_frag_info(rxd); + + rx_desc = container_of(rxd, struct htt_rx_desc_v1, base); + return &rx_desc->frag_info.common; +} + +static inline struct rx_mpdu_start * +ath10k_htt_rx_desc_get_mpdu_start(struct ath10k_hw_params *hw, struct htt_rx_desc *rxd) +{ + struct htt_rx_desc_v1 *rx_desc; + + if (hw->rx_desc_ops->rx_desc_get_mpdu_start) + return hw->rx_desc_ops->rx_desc_get_mpdu_start(rxd); + + rx_desc = container_of(rxd, struct htt_rx_desc_v1, base); + return &rx_desc->mpdu_start; +} + +static inline struct rx_mpdu_end * +ath10k_htt_rx_desc_get_mpdu_end(struct ath10k_hw_params *hw, struct htt_rx_desc *rxd) +{ + struct htt_rx_desc_v1 *rx_desc; + + if (hw->rx_desc_ops->rx_desc_get_mpdu_end) + return hw->rx_desc_ops->rx_desc_get_mpdu_end(rxd); + + rx_desc = container_of(rxd, struct htt_rx_desc_v1, base); + return &rx_desc->mpdu_end; +} + +static inline struct rx_msdu_start_common * +ath10k_htt_rx_desc_get_msdu_start(struct ath10k_hw_params *hw, struct htt_rx_desc *rxd) +{ + struct htt_rx_desc_v1 *rx_desc; + + if (hw->rx_desc_ops->rx_desc_get_msdu_start) + return hw->rx_desc_ops->rx_desc_get_msdu_start(rxd); + + rx_desc = container_of(rxd, struct htt_rx_desc_v1, base); + return &rx_desc->msdu_start.common; +} + +static inline struct rx_msdu_end_common * +ath10k_htt_rx_desc_get_msdu_end(struct ath10k_hw_params *hw, struct htt_rx_desc *rxd) +{ + struct htt_rx_desc_v1 *rx_desc; + + if (hw->rx_desc_ops->rx_desc_get_msdu_end) + return hw->rx_desc_ops->rx_desc_get_msdu_end(rxd); + + rx_desc = container_of(rxd, struct htt_rx_desc_v1, base); + return &rx_desc->msdu_end.common; +} + +static inline struct rx_ppdu_start * +ath10k_htt_rx_desc_get_ppdu_start(struct ath10k_hw_params *hw, struct htt_rx_desc *rxd) +{ + struct htt_rx_desc_v1 *rx_desc; + + if (hw->rx_desc_ops->rx_desc_get_ppdu_start) + return hw->rx_desc_ops->rx_desc_get_ppdu_start(rxd); + + rx_desc = container_of(rxd, struct htt_rx_desc_v1, base); + return &rx_desc->ppdu_start; +} + +static inline struct rx_ppdu_end_common * +ath10k_htt_rx_desc_get_ppdu_end(struct ath10k_hw_params *hw, struct htt_rx_desc *rxd) +{ + struct htt_rx_desc_v1 *rx_desc; + + if (hw->rx_desc_ops->rx_desc_get_ppdu_end) + return hw->rx_desc_ops->rx_desc_get_ppdu_end(rxd); + + rx_desc = container_of(rxd, struct htt_rx_desc_v1, base); + return &rx_desc->ppdu_end.common; +} + +static inline u8 * +ath10k_htt_rx_desc_get_rx_hdr_status(struct ath10k_hw_params *hw, struct htt_rx_desc *rxd) +{ + struct htt_rx_desc_v1 *rx_desc; + + if (hw->rx_desc_ops->rx_desc_get_rx_hdr_status) + return hw->rx_desc_ops->rx_desc_get_rx_hdr_status(rxd); + + rx_desc = container_of(rxd, struct htt_rx_desc_v1, base); + return rx_desc->rx_hdr_status; +} + +static inline u8 * +ath10k_htt_rx_desc_get_msdu_payload(struct ath10k_hw_params *hw, struct htt_rx_desc *rxd) +{ + struct htt_rx_desc_v1 *rx_desc; + + if (hw->rx_desc_ops->rx_desc_get_msdu_payload) + return hw->rx_desc_ops->rx_desc_get_msdu_payload(rxd); + + rx_desc = container_of(rxd, struct htt_rx_desc_v1, base); + return rx_desc->msdu_payload; +} + #define HTT_RX_DESC_HL_INFO_SEQ_NUM_MASK 0x00000fff #define HTT_RX_DESC_HL_INFO_SEQ_NUM_LSB 0 #define HTT_RX_DESC_HL_INFO_ENCRYPTED_MASK 0x00001000 @@ -2136,7 +2381,14 @@ struct htt_rx_chan_info { * rounded up to a cache line size. */ #define HTT_RX_BUF_SIZE 2048 -#define HTT_RX_MSDU_SIZE (HTT_RX_BUF_SIZE - (int)sizeof(struct htt_rx_desc)) + +/* The HTT_RX_MSDU_SIZE can't be statically computed anymore, + * because it depends on the underlying device rx_desc representation + */ +static inline int ath10k_htt_rx_msdu_size(struct ath10k_hw_params *hw) +{ + return HTT_RX_BUF_SIZE - (int)hw->rx_desc_ops->rx_desc_size; +} /* Refill a bunch of RX buffers for each refill round so that FW/HW can handle * aggregated traffic more nicely. |