| /* | |
| * This file is part of wl1251 | |
| * | |
| * Copyright (c) 1998-2007 Texas Instruments Incorporated | |
| * Copyright (C) 2008 Nokia Corporation | |
| * | |
| * 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 __WL1251_RX_H__ | |
| #define __WL1251_RX_H__ | |
| #include <linux/bitops.h> | |
| #include "wl1251.h" | |
| /* | |
| * RX PATH | |
| * | |
| * The Rx path uses a double buffer and an rx_contro structure, each located | |
| * at a fixed address in the device memory. The host keeps track of which | |
| * buffer is available and alternates between them on a per packet basis. | |
| * The size of each of the two buffers is large enough to hold the longest | |
| * 802.3 packet. | |
| * The RX path goes like that: | |
| * 1) The target generates an interrupt each time a new packet is received. | |
| * There are 2 RX interrupts, one for each buffer. | |
| * 2) The host reads the received packet from one of the double buffers. | |
| * 3) The host triggers a target interrupt. | |
| * 4) The target prepares the next RX packet. | |
| */ | |
| #define WL1251_RX_MAX_RSSI -30 | |
| #define WL1251_RX_MIN_RSSI -95 | |
| #define WL1251_RX_ALIGN_TO 4 | |
| #define WL1251_RX_ALIGN(len) (((len) + WL1251_RX_ALIGN_TO - 1) & \ | |
| ~(WL1251_RX_ALIGN_TO - 1)) | |
| #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 | |
| struct wl1251_rx_descriptor { | |
| u32 timestamp; /* In microseconds */ | |
| u16 length; /* Paylod length, including headers */ | |
| u16 flags; | |
| /* | |
| * 0 - 802.11 | |
| * 1 - 802.3 | |
| * 2 - IP | |
| * 3 - Raw Codec | |
| */ | |
| u8 type; | |
| /* | |
| * Received Rate: | |
| * 0x0A - 1MBPS | |
| * 0x14 - 2MBPS | |
| * 0x37 - 5_5MBPS | |
| * 0x0B - 6MBPS | |
| * 0x0F - 9MBPS | |
| * 0x6E - 11MBPS | |
| * 0x0A - 12MBPS | |
| * 0x0E - 18MBPS | |
| * 0xDC - 22MBPS | |
| * 0x09 - 24MBPS | |
| * 0x0D - 36MBPS | |
| * 0x08 - 48MBPS | |
| * 0x0C - 54MBPS | |
| */ | |
| u8 rate; | |
| u8 mod_pre; /* Modulation and preamble */ | |
| u8 channel; | |
| /* | |
| * 0 - 2.4 Ghz | |
| * 1 - 5 Ghz | |
| */ | |
| u8 band; | |
| s8 rssi; /* in dB */ | |
| u8 rcpi; /* in dB */ | |
| u8 snr; /* in dB */ | |
| } __packed; | |
| void wl1251_rx(struct wl1251 *wl); | |
| #endif |