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Commit cf495496 authored by Golan Ben Ami's avatar Golan Ben Ami Committed by Luca Coelho
Browse files

iwlwifi: introduce new rx structures used by 22560 RFH 



22560 devices RFH uses different structures, which act similar
to the legacy rxq management lists - free and used list.

The iwl_rx_transfer_desc struct is part of the free list,
and consists of pointers to the empty rb's the driver wants to
pass to the fw.

The iwl_rx_completion_desc struct is part of the used list,
and consists of pointers to the buffer the fw filled up
with new rx, both commands and data, for the host.

Signed-off-by: default avatarGolan Ben Ami <golan.ben.ami@intel.com>
Signed-off-by: default avatarLuca Coelho <luciano.coelho@intel.com>
parent a0ec0169

drivers/net/wireless/intel/iwlwifi/pcie/internal.h

+100 −0
Original line number Diff line number Diff line
@@ -99,6 +99,106 @@ struct isr_statistics { 
	u32 unhandled;

};



#define IWL_CD_STTS_OPTIMIZED_POS	0

#define IWL_CD_STTS_OPTIMIZED_MSK	0x01

#define IWL_CD_STTS_TRANSFER_STATUS_POS	1

#define IWL_CD_STTS_TRANSFER_STATUS_MSK	0x0E

#define IWL_CD_STTS_WIFI_STATUS_POS	4

#define IWL_CD_STTS_WIFI_STATUS_MSK	0xF0



/**

 * enum iwl_completion_desc_transfer_status -  transfer status (bits 1-3)

 * @IWL_CD_STTS_END_TRANSFER: successful transfer complete.

 *	In sniffer mode, when split is used, set in last CD completion. (RX)

 * @IWL_CD_STTS_OVERFLOW: In sniffer mode, when using split - used for

 *	all CD completion. (RX)

 * @IWL_CD_STTS_ABORTED: CR abort / close flow. (RX)

 */

enum iwl_completion_desc_transfer_status {

	IWL_CD_STTS_UNUSED,

	IWL_CD_STTS_UNUSED_2,

	IWL_CD_STTS_END_TRANSFER,

	IWL_CD_STTS_OVERFLOW,

	IWL_CD_STTS_ABORTED,

	IWL_CD_STTS_ERROR,

};



/**

 * enum iwl_completion_desc_wifi_status - wifi status (bits 4-7)

 * @IWL_CD_STTS_VALID: the packet is valid (RX)

 * @IWL_CD_STTS_FCS_ERR: frame check sequence error (RX)

 * @IWL_CD_STTS_SEC_KEY_ERR: error handling the security key of rx (RX)

 * @IWL_CD_STTS_DECRYPTION_ERR: error decrypting the frame (RX)

 * @IWL_CD_STTS_DUP: duplicate packet (RX)

 * @IWL_CD_STTS_ICV_MIC_ERR: MIC error (RX)

 * @IWL_CD_STTS_INTERNAL_SNAP_ERR: problems removing the snap (RX)

 * @IWL_CD_STTS_SEC_PORT_FAIL: security port fail (RX)

 * @IWL_CD_STTS_BA_OLD_SN: block ack received old SN (RX)

 * @IWL_CD_STTS_QOS_NULL: QoS null packet (RX)

 * @IWL_CD_STTS_MAC_HDR_ERR: MAC header conversion error (RX)

 * @IWL_CD_STTS_MAX_RETRANS: reached max number of retransmissions (TX)

 * @IWL_CD_STTS_EX_LIFETIME: exceeded lifetime (TX)

 * @IWL_CD_STTS_NOT_USED: completed but not used (RX)

 * @IWL_CD_STTS_REPLAY_ERR: pn check failed, replay error (RX)

 */

enum iwl_completion_desc_wifi_status {

	IWL_CD_STTS_VALID,

	IWL_CD_STTS_FCS_ERR,

	IWL_CD_STTS_SEC_KEY_ERR,

	IWL_CD_STTS_DECRYPTION_ERR,

	IWL_CD_STTS_DUP,

	IWL_CD_STTS_ICV_MIC_ERR,

	IWL_CD_STTS_INTERNAL_SNAP_ERR,

	IWL_CD_STTS_SEC_PORT_FAIL,

	IWL_CD_STTS_BA_OLD_SN,

	IWL_CD_STTS_QOS_NULL,

	IWL_CD_STTS_MAC_HDR_ERR,

	IWL_CD_STTS_MAX_RETRANS,

	IWL_CD_STTS_EX_LIFETIME,

	IWL_CD_STTS_NOT_USED,

	IWL_CD_STTS_REPLAY_ERR,

};



#define IWL_RX_TD_TYPE		0xff000000

#define IWL_RX_TD_SIZE		0x00ffffff



/**

 * struct iwl_rx_transfer_desc - transfer descriptor

 * @type_n_size: buffer type (bit 0: external buff valid,

 *	bit 1: optional footer valid, bit 2-7: reserved)

 *	and buffer size

 * @addr: ptr to free buffer start address

 * @rbid: unique tag of the buffer

 * @reserved: reserved

 */

struct iwl_rx_transfer_desc {

	__le32 type_n_size;

	__le64 addr;

	__le16 rbid;

	__le16 reserved;

} __packed;



#define IWL_RX_CD_SIZE		0xffffff00



/**

 * struct iwl_rx_completion_desc - completion descriptor

 * @type: buffer type (bit 0: external buff valid,

 *	bit 1: optional footer valid, bit 2-7: reserved)

 * @status: status of the completion

 * @reserved1: reserved

 * @rbid: unique tag of the received buffer

 * @size: buffer size, masked by IWL_RX_CD_SIZE

 * @reserved2: reserved

 */

struct iwl_rx_completion_desc {

	u8 type;

	u8 status;

	__le16 reserved1;

	__le16 rbid;

	__le32 size;

	u8 reserved2[22];

} __packed;



/**

 * struct iwl_rxq - Rx queue

 * @id: queue index