diff options
Diffstat (limited to 'drivers/net/wireless/ti/wlcore/rx.h')
| -rw-r--r-- | drivers/net/wireless/ti/wlcore/rx.h | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/drivers/net/wireless/ti/wlcore/rx.h b/drivers/net/wireless/ti/wlcore/rx.h new file mode 100644 index 00000000000..a3b1618db27 --- /dev/null +++ b/drivers/net/wireless/ti/wlcore/rx.h @@ -0,0 +1,152 @@ +/* + * This file is part of wl1271 + * + * Copyright (C) 1998-2009 Texas Instruments. All rights reserved. + * Copyright (C) 2008-2009 Nokia Corporation + * + * Contact: Luciano Coelho <luciano.coelho@nokia.com> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * version 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA + * 02110-1301 USA + * + */ + +#ifndef __RX_H__ +#define __RX_H__ + +#include <linux/bitops.h> + +#define WL1271_RX_MAX_RSSI -30 +#define WL1271_RX_MIN_RSSI -95 + +#define SHORT_PREAMBLE_BIT BIT(0) +#define OFDM_RATE_BIT BIT(6) +#define PBCC_RATE_BIT BIT(7) + +#define PLCP_HEADER_LENGTH 8 +#define RX_DESC_PACKETID_SHIFT 11 +#define RX_MAX_PACKET_ID 3 + +#define RX_DESC_VALID_FCS 0x0001 +#define RX_DESC_MATCH_RXADDR1 0x0002 +#define RX_DESC_MCAST 0x0004 +#define RX_DESC_STAINTIM 0x0008 +#define RX_DESC_VIRTUAL_BM 0x0010 +#define RX_DESC_BCAST 0x0020 +#define RX_DESC_MATCH_SSID 0x0040 +#define RX_DESC_MATCH_BSSID 0x0080 +#define RX_DESC_ENCRYPTION_MASK 0x0300 +#define RX_DESC_MEASURMENT 0x0400 +#define RX_DESC_SEQNUM_MASK 0x1800 +#define RX_DESC_MIC_FAIL 0x2000 +#define RX_DESC_DECRYPT_FAIL 0x4000 + +/* + * RX Descriptor flags: + * + * Bits 0-1 - band + * Bit 2 - STBC + * Bit 3 - A-MPDU + * Bit 4 - HT + * Bits 5-7 - encryption + */ +#define WL1271_RX_DESC_BAND_MASK 0x03 +#define WL1271_RX_DESC_ENCRYPT_MASK 0xE0 + +#define WL1271_RX_DESC_BAND_BG 0x00 +#define WL1271_RX_DESC_BAND_J 0x01 +#define WL1271_RX_DESC_BAND_A 0x02 + +#define WL1271_RX_DESC_STBC BIT(2) +#define WL1271_RX_DESC_A_MPDU BIT(3) +#define WL1271_RX_DESC_HT BIT(4) + +#define WL1271_RX_DESC_ENCRYPT_WEP 0x20 +#define WL1271_RX_DESC_ENCRYPT_TKIP 0x40 +#define WL1271_RX_DESC_ENCRYPT_AES 0x60 +#define WL1271_RX_DESC_ENCRYPT_GEM 0x80 + +/* + * RX Descriptor status + * + * Bits 0-2 - error code + * Bits 3-5 - process_id tag (AP mode FW) + * Bits 6-7 - reserved + */ +#define WL1271_RX_DESC_STATUS_MASK 0x07 + +#define WL1271_RX_DESC_SUCCESS 0x00 +#define WL1271_RX_DESC_DECRYPT_FAIL 0x01 +#define WL1271_RX_DESC_MIC_FAIL 0x02 + +#define RX_MEM_BLOCK_MASK 0xFF +#define RX_BUF_SIZE_MASK 0xFFF00 +#define RX_BUF_SIZE_SHIFT_DIV 6 +#define ALIGNED_RX_BUF_SIZE_MASK 0xFFFF00 +#define ALIGNED_RX_BUF_SIZE_SHIFT 8 + +/* If set, the start of IP payload is not 4 bytes aligned */ +#define RX_BUF_UNALIGNED_PAYLOAD BIT(20) + +/* If set, the buffer was padded by the FW to be 4 bytes aligned */ +#define RX_BUF_PADDED_PAYLOAD BIT(30) + +/* + * Account for the padding inserted by the FW in case of RX_ALIGNMENT + * or for fixing alignment in case the packet wasn't aligned. + */ +#define RX_BUF_ALIGN 2 + +/* Describes the alignment state of a Rx buffer */ +enum wl_rx_buf_align { + WLCORE_RX_BUF_ALIGNED, + WLCORE_RX_BUF_UNALIGNED, + WLCORE_RX_BUF_PADDED, +}; + +enum { + WL12XX_RX_CLASS_UNKNOWN, + WL12XX_RX_CLASS_MANAGEMENT, + WL12XX_RX_CLASS_DATA, + WL12XX_RX_CLASS_QOS_DATA, + WL12XX_RX_CLASS_BCN_PRBRSP, + WL12XX_RX_CLASS_EAPOL, + WL12XX_RX_CLASS_BA_EVENT, + WL12XX_RX_CLASS_AMSDU, + WL12XX_RX_CLASS_LOGGER, +}; + +struct wl1271_rx_descriptor { + __le16 length; + u8 status; + u8 flags; + u8 rate; + u8 channel; + s8 rssi; + u8 snr; + __le32 timestamp; + u8 packet_class; + u8 hlid; + u8 pad_len; + u8 reserved; +} __packed; + +int wlcore_rx(struct wl1271 *wl, struct wl_fw_status *status); +u8 wl1271_rate_to_idx(int rate, enum ieee80211_band band); +int wl1271_rx_filter_enable(struct wl1271 *wl, + int index, bool enable, + struct wl12xx_rx_filter *filter); +int wl1271_rx_filter_clear_all(struct wl1271 *wl); + +#endif |