2 * carl9170 firmware - used by the ar9170 wireless device
4 * shared WLAN functions, interfaces and definitions
6 * Copyright (c) 2000-2005 ZyDAS Technology Corporation
7 * Copyright (c) 2007-2009 Atheros Communications, Inc.
8 * Copyright 2009 Johannes Berg <johannes@sipsolutions.net>
9 * Copyright 2009-2011 Christian Lamparter <chunkeey@googlemail.com>
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.
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.
21 * You should have received a copy of the GNU General Public License along
22 * with this program; If not, see <http://www.gnu.org/licenses/>.
25 #ifndef __CARL9170FW_WLAN_H
26 #define __CARL9170FW_WLAN_H
34 static inline __inline void set_wlan_txq_dma_addr(const unsigned int q, const uint32_t v)
36 set(AR9170_MAC_REG_DMA_TXQ_ADDR + (q << 3), v);
39 static inline __inline void set_wlan_txq_dma_curr_addr(const unsigned int q, const uint32_t v)
41 set(AR9170_MAC_REG_DMA_TXQ_CURR_ADDR + (q << 3), v);
44 static inline __inline volatile struct dma_desc *get_wlan_txq_dma_addr(const unsigned int q)
46 return getp(AR9170_MAC_REG_DMA_TXQ_ADDR + (q << 3));
49 static inline __inline volatile struct dma_desc *get_wlan_txq_addr(const unsigned int q)
51 return getp(AR9170_MAC_REG_DMA_TXQ_CURR_ADDR + (q << 3));
54 static inline __inline volatile struct dma_desc *get_wlan_txq_last_addr(const unsigned int q)
56 return getp(AR9170_MAC_REG_DMA_TXQ_LAST_ADDR + (q << 2));
59 static inline __inline void wlan_trigger(const uint32_t queue_bit)
61 set(AR9170_MAC_REG_DMA_TRIGGER, queue_bit);
64 static inline __inline uint8_t ar9170_get_rx_macstatus_status(struct dma_desc *desc)
66 return *((uint8_t *) DESC_PAYLOAD_OFF(desc->lastAddr,
67 (unsigned int) desc->lastAddr->dataSize - 1));
70 static inline __inline uint8_t ar9170_get_rx_macstatus_error(struct dma_desc *desc)
74 if (desc->lastAddr->dataSize == 1) {
75 while (desc->lastAddr != desc->nextAddr)
76 desc = desc->nextAddr;
78 offset = (unsigned int) (desc->dataSize - 1);
80 desc = desc->lastAddr;
81 offset = desc->dataSize -
82 (sizeof(struct ar9170_rx_macstatus) -
83 offsetof(struct ar9170_rx_macstatus, error));
86 return *((uint8_t *) DESC_PAYLOAD_OFF(desc, offset));
89 static inline __inline struct ieee80211_hdr *ar9170_get_rx_i3e(struct dma_desc *desc)
91 if (!((ar9170_get_rx_macstatus_status(desc) &
92 AR9170_RX_STATUS_MPDU) & AR9170_RX_STATUS_MPDU_LAST)) {
93 return (void *)(DESC_PAYLOAD_OFF(desc,
94 offsetof(struct ar9170_rx_frame_head, i3e)));
96 return (void *)(DESC_PAYLOAD_OFF(desc,
97 offsetof(struct ar9170_rx_frame_tail, i3e)));
101 static inline __inline struct ar9170_rx_head *ar9170_get_rx_head(struct dma_desc *desc)
103 if (!((ar9170_get_rx_macstatus_status(desc) &
104 AR9170_RX_STATUS_MPDU) & AR9170_RX_STATUS_MPDU_LAST)) {
105 return (void *)((uint8_t *)DESC_PAYLOAD(desc) +
106 offsetof(struct ar9170_rx_frame_head, phy_head));
108 return (void *) NULL;
112 static inline __inline uint32_t ar9170_rx_to_phy(struct dma_desc *rx)
114 struct ar9170_tx_hw_phy_control phy;
115 struct ar9170_rx_head *head;
120 head = ar9170_get_rx_head(rx);
122 return le32_to_cpu(phy.set);
124 mac_status = ar9170_get_rx_macstatus_status(rx);
126 phy.modulation = mac_status & AR9170_RX_STATUS_MODULATION;
127 phy.chains = AR9170_TX_PHY_TXCHAIN_1;
129 switch (phy.modulation) {
130 case AR9170_RX_STATUS_MODULATION_CCK:
131 if (mac_status & AR9170_RX_STATUS_SHORT_PREAMBLE)
134 switch (head->plcp[0]) {
135 case AR9170_RX_PHY_RATE_CCK_2M:
136 phy.mcs = AR9170_TX_PHY_RATE_CCK_2M;
139 case AR9170_RX_PHY_RATE_CCK_5M:
140 phy.mcs = AR9170_TX_PHY_RATE_CCK_5M;
143 case AR9170_RX_PHY_RATE_CCK_11M:
144 phy.mcs = AR9170_TX_PHY_RATE_CCK_11M;
147 case AR9170_RX_PHY_RATE_CCK_1M:
149 phy.mcs = AR9170_TX_PHY_RATE_CCK_1M;
155 case AR9170_RX_STATUS_MODULATION_DUPOFDM:
156 case AR9170_RX_STATUS_MODULATION_OFDM:
157 phy.mcs = head->plcp[0] & 0xf;
160 case AR9170_RX_STATUS_MODULATION_HT:
161 if (head->plcp[3] & 0x80)
164 if (head->plcp[6] & 0x80)
167 /* TODO: Enable both chains for MCS > 7 */
168 phy.mcs = head->plcp[6] & 0x7;
172 return le32_to_cpu(phy.set);
175 static inline __inline unsigned int ar9170_get_rx_mpdu_len(struct dma_desc *desc)
178 * WARNING: you have to check the error bits in macstatus first!
181 unsigned int mpdu_len = desc->totalLen;
183 mpdu_len -= sizeof(struct ar9170_rx_macstatus);
185 switch (ar9170_get_rx_macstatus_status(desc) & AR9170_RX_STATUS_MPDU) {
186 case AR9170_RX_STATUS_MPDU_LAST:
187 mpdu_len -= sizeof(struct ar9170_rx_phystatus);
190 case AR9170_RX_STATUS_MPDU_SINGLE:
191 /* MPDU single has both */
192 mpdu_len -= sizeof(struct ar9170_rx_phystatus);
194 case AR9170_RX_STATUS_MPDU_FIRST:
195 mpdu_len -= sizeof(struct ar9170_rx_head);
198 case AR9170_RX_STATUS_MPDU_MIDDLE:
206 static inline __inline bool ar9170_tx_length_check(const uint16_t len)
208 return len > (sizeof(struct carl9170_tx_superframe) + 24 +
212 static inline __inline struct carl9170_tx_superframe *get_super(struct dma_desc *desc)
214 return container_of(DESC_PAYLOAD(desc), struct carl9170_tx_superframe,
218 static inline __inline struct carl9170_tx_superframe *__get_super(struct dma_desc *desc)
220 return DESC_PAYLOAD(desc);
223 static inline __inline void hide_super(struct dma_desc *desc)
225 desc->dataAddr = (uint8_t *)
226 (((unsigned long)(DESC_PAYLOAD(desc)) +
227 offsetof(struct carl9170_tx_superframe, f)));
229 desc->dataSize -= sizeof(struct carl9170_tx_superdesc);
230 desc->totalLen -= sizeof(struct carl9170_tx_superdesc);
233 static inline __inline void unhide_super(struct dma_desc *desc)
235 desc->dataAddr = (uint8_t *) get_super(desc);
236 desc->dataSize += sizeof(struct carl9170_tx_superdesc);
237 desc->totalLen += sizeof(struct carl9170_tx_superdesc);
240 static inline __inline __hot void read_tsf(uint32_t tsf[static 2])
243 * "According to the [hardware] documentation:
244 * > when TSF_LOW is read, TSF_HI is automatically concurrently
245 * > copied into a temporary register so that an immediate read
246 * > of TSF_HI will get the value that was present when TSF_LOW
249 * (David H. Lynch Jr. - mail from 2010-05-22)
250 * http://permalink.gmane.org/gmane.linux.kernel.wireless.general/51249
253 tsf[0] = get(AR9170_MAC_REG_TSF_L);
254 tsf[1] = get(AR9170_MAC_REG_TSF_H);
257 /* This function will only work on uint32_t-aligned pointers! */
258 static inline bool compare_ether_address(const void *_d0, const void *_d1)
260 const uint32_t *d0 = _d0;
261 const uint32_t *d1 = _d1;
263 /* BUG_ON((unsigned long)d0 & 3 || (unsigned long)d1 & 3)) */
264 return !((d0[0] ^ d1[0]) | (unsigned short)(d0[1] ^ d1[1]));
267 void wlan_tx(struct dma_desc *desc);
268 void wlan_tx_fw(struct carl9170_tx_superdesc *super, fw_desc_callback_t cb);
269 void wlan_timer(void);
270 void handle_wlan(void);
272 void handle_wlan_rx(void);
274 void wlan_send_buffered_tx_status(void);
275 void wlan_send_buffered_cab(void);
276 void wlan_send_buffered_ba(void);
277 void handle_wlan_tx_completion(void);
278 void wlan_dma_bump(unsigned int qidx);
280 void wlan_cab_flush_queue(const unsigned int vif);
281 void wlan_modify_beacon(const unsigned int vif,
282 const unsigned int bcn_addr,
283 const unsigned int bcn_len);
285 void wlan_tx_complete(struct carl9170_tx_superframe *super, bool txs);
286 void wlan_prepare_wol(void);
288 static inline void __check_wlantx(void)
290 BUILD_BUG_ON(CARL9170_TX_SUPERDESC_LEN & 3);
291 BUILD_BUG_ON(sizeof(struct carl9170_tx_superdesc) != CARL9170_TX_SUPERDESC_LEN);
292 BUILD_BUG_ON(sizeof(struct _carl9170_tx_superdesc) != CARL9170_TX_SUPERDESC_LEN);
293 BUILD_BUG_ON(sizeof(struct _carl9170_tx_superframe) != CARL9170_TX_SUPERFRAME_LEN);
294 BUILD_BUG_ON((offsetof(struct carl9170_tx_superframe, f) & 3) != 0);
295 BUILD_BUG_ON(offsetof(struct _carl9170_tx_superframe, f) !=
296 (offsetof(struct _carl9170_tx_superframe, f)));
297 BUILD_BUG_ON(sizeof(struct ar9170_tx_hwdesc) != AR9170_TX_HWDESC_LEN);
298 BUILD_BUG_ON(sizeof(struct _ar9170_tx_hwdesc) != AR9170_TX_HWDESC_LEN);
299 BUILD_BUG_ON(sizeof(struct ar9170_rx_head) != AR9170_RX_HEAD_LEN);
300 BUILD_BUG_ON(sizeof(struct ar9170_rx_phystatus) != AR9170_RX_PHYSTATUS_LEN);
301 BUILD_BUG_ON(sizeof(struct ar9170_rx_macstatus) != AR9170_RX_MACSTATUS_LEN);
304 #endif /* __CARL9170FW_WLAN_H */