drivers/net/wireless/rt2x00/rt2800mmio.h

   1 /*      Copyright (C) 2009 - 2010 Ivo van Doorn <IvDoorn@gmail.com>
   2  *      Copyright (C) 2009 Alban Browaeys <prahal@yahoo.com>
   3  *      Copyright (C) 2009 Felix Fietkau <nbd@openwrt.org>
   4  *      Copyright (C) 2009 Luis Correia <luis.f.correia@gmail.com>
   5  *      Copyright (C) 2009 Mattias Nissler <mattias.nissler@gmx.de>
   6  *      Copyright (C) 2009 Mark Asselstine <asselsm@gmail.com>
   7  *      Copyright (C) 2009 Xose Vazquez Perez <xose.vazquez@gmail.com>
   8  *      Copyright (C) 2009 Bart Zolnierkiewicz <bzolnier@gmail.com>
   9  *      <http://rt2x00.serialmonkey.com>
  10  *
  11  *      This program is free software; you can redistribute it and/or modify
  12  *      it under the terms of the GNU General Public License as published by
  13  *      the Free Software Foundation; either version 2 of the License, or
  14  *      (at your option) any later version.
  15  *
  16  *      This program is distributed in the hope that it will be useful,
  17  *      but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  19  *      GNU General Public License for more details.
  20  *
  21  *      You should have received a copy of the GNU General Public License
  22  *      along with this program; if not, see <http://www.gnu.org/licenses/>.
  23  */
  24
  25 /*      Module: rt2800mmio
  26  *      Abstract: forward declarations for the rt2800mmio module.
  27  */
  28
  29 #ifndef RT2800MMIO_H
  30 #define RT2800MMIO_H
  31
  32 /*
  33  * Queue register offset macros
  34  */
  35 #define TX_QUEUE_REG_OFFSET     0x10
  36 #define TX_BASE_PTR(__x)        (TX_BASE_PTR0 + ((__x) * TX_QUEUE_REG_OFFSET))
  37 #define TX_MAX_CNT(__x)         (TX_MAX_CNT0 + ((__x) * TX_QUEUE_REG_OFFSET))
  38 #define TX_CTX_IDX(__x)         (TX_CTX_IDX0 + ((__x) * TX_QUEUE_REG_OFFSET))
  39 #define TX_DTX_IDX(__x)         (TX_DTX_IDX0 + ((__x) * TX_QUEUE_REG_OFFSET))
  40
  41 /*
  42  * DMA descriptor defines.
  43  */
  44 #define TXD_DESC_SIZE                   (4 * sizeof(__le32))
  45 #define RXD_DESC_SIZE                   (4 * sizeof(__le32))
  46
  47 /*
  48  * TX descriptor format for TX, PRIO and Beacon Ring.
  49  */
  50
  51 /*
  52  * Word0
  53  */
  54 #define TXD_W0_SD_PTR0                  FIELD32(0xffffffff)
  55
  56 /*
  57  * Word1
  58  */
  59 #define TXD_W1_SD_LEN1                  FIELD32(0x00003fff)
  60 #define TXD_W1_LAST_SEC1                FIELD32(0x00004000)
  61 #define TXD_W1_BURST                    FIELD32(0x00008000)
  62 #define TXD_W1_SD_LEN0                  FIELD32(0x3fff0000)
  63 #define TXD_W1_LAST_SEC0                FIELD32(0x40000000)
  64 #define TXD_W1_DMA_DONE                 FIELD32(0x80000000)
  65
  66 /*
  67  * Word2
  68  */
  69 #define TXD_W2_SD_PTR1                  FIELD32(0xffffffff)
  70
  71 /*
  72  * Word3
  73  * WIV: Wireless Info Valid. 1: Driver filled WI, 0: DMA needs to copy WI
  74  * QSEL: Select on-chip FIFO ID for 2nd-stage output scheduler.
  75  *       0:MGMT, 1:HCCA 2:EDCA
  76  */
  77 #define TXD_W3_WIV                      FIELD32(0x01000000)
  78 #define TXD_W3_QSEL                     FIELD32(0x06000000)
  79 #define TXD_W3_TCO                      FIELD32(0x20000000)
  80 #define TXD_W3_UCO                      FIELD32(0x40000000)
  81 #define TXD_W3_ICO                      FIELD32(0x80000000)
  82
  83 /*
  84  * RX descriptor format for RX Ring.
  85  */
  86
  87 /*
  88  * Word0
  89  */
  90 #define RXD_W0_SDP0                     FIELD32(0xffffffff)
  91
  92 /*
  93  * Word1
  94  */
  95 #define RXD_W1_SDL1                     FIELD32(0x00003fff)
  96 #define RXD_W1_SDL0                     FIELD32(0x3fff0000)
  97 #define RXD_W1_LS0                      FIELD32(0x40000000)
  98 #define RXD_W1_DMA_DONE                 FIELD32(0x80000000)
  99
 100 /*
 101  * Word2
 102  */
 103 #define RXD_W2_SDP1                     FIELD32(0xffffffff)
 104
 105 /*
 106  * Word3
 107  * AMSDU: RX with 802.3 header, not 802.11 header.
 108  * DECRYPTED: This frame is being decrypted.
 109  */
 110 #define RXD_W3_BA                       FIELD32(0x00000001)
 111 #define RXD_W3_DATA                     FIELD32(0x00000002)
 112 #define RXD_W3_NULLDATA                 FIELD32(0x00000004)
 113 #define RXD_W3_FRAG                     FIELD32(0x00000008)
 114 #define RXD_W3_UNICAST_TO_ME            FIELD32(0x00000010)
 115 #define RXD_W3_MULTICAST                FIELD32(0x00000020)
 116 #define RXD_W3_BROADCAST                FIELD32(0x00000040)
 117 #define RXD_W3_MY_BSS                   FIELD32(0x00000080)
 118 #define RXD_W3_CRC_ERROR                FIELD32(0x00000100)
 119 #define RXD_W3_CIPHER_ERROR             FIELD32(0x00000600)
 120 #define RXD_W3_AMSDU                    FIELD32(0x00000800)
 121 #define RXD_W3_HTC                      FIELD32(0x00001000)
 122 #define RXD_W3_RSSI                     FIELD32(0x00002000)
 123 #define RXD_W3_L2PAD                    FIELD32(0x00004000)
 124 #define RXD_W3_AMPDU                    FIELD32(0x00008000)
 125 #define RXD_W3_DECRYPTED                FIELD32(0x00010000)
 126 #define RXD_W3_PLCP_SIGNAL              FIELD32(0x00020000)
 127 #define RXD_W3_PLCP_RSSI                FIELD32(0x00040000)
 128
 129 /* TX descriptor initialization */
 130 __le32 *rt2800mmio_get_txwi(struct queue_entry *entry);
 131 void rt2800mmio_write_tx_desc(struct queue_entry *entry,
 132                               struct txentry_desc *txdesc);
 133
 134 /* RX control handlers */
 135 void rt2800mmio_fill_rxdone(struct queue_entry *entry,
 136                             struct rxdone_entry_desc *rxdesc);
 137
 138 /* Interrupt functions */
 139 void rt2800mmio_txstatus_tasklet(unsigned long data);
 140 void rt2800mmio_pretbtt_tasklet(unsigned long data);
 141 void rt2800mmio_tbtt_tasklet(unsigned long data);
 142 void rt2800mmio_rxdone_tasklet(unsigned long data);
 143 void rt2800mmio_autowake_tasklet(unsigned long data);
 144 irqreturn_t rt2800mmio_interrupt(int irq, void *dev_instance);
 145 void rt2800mmio_toggle_irq(struct rt2x00_dev *rt2x00dev,
 146                            enum dev_state state);
 147
 148 /* Queue handlers */
 149 void rt2800mmio_start_queue(struct data_queue *queue);
 150 void rt2800mmio_kick_queue(struct data_queue *queue);
 151 void rt2800mmio_stop_queue(struct data_queue *queue);
 152 void rt2800mmio_queue_init(struct data_queue *queue);
 153
 154 /* Initialization functions */
 155 bool rt2800mmio_get_entry_state(struct queue_entry *entry);
 156 void rt2800mmio_clear_entry(struct queue_entry *entry);
 157 int rt2800mmio_init_queues(struct rt2x00_dev *rt2x00dev);
 158 int rt2800mmio_init_registers(struct rt2x00_dev *rt2x00dev);
 159
 160 /* Device state switch handlers. */
 161 int rt2800mmio_enable_radio(struct rt2x00_dev *rt2x00dev);
 162
 163 #endif /* RT2800MMIO_H */