1 /*
2  * Copyright (c) 2004-2008 Reyk Floeter <reyk@openbsd.org>
3  * Copyright (c) 2006-2008 Nick Kossifidis <mickflemm@gmail.com>
4  * Copyright (c) 2007-2008 Jiri Slaby <jirislaby@gmail.com>
5  *
6  * Permission to use, copy, modify, and distribute this software for any
7  * purpose with or without fee is hereby granted, provided that the above
8  * copyright notice and this permission notice appear in all copies.
9  *
10  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17  *
18  */
19 
20 /**************\
21 * Capabilities *
22 \**************/
23 
24 #include "ath5k.h"
25 #include "reg.h"
26 #include "debug.h"
27 #include "../regd.h"
28 
29 /*
30  * Fill the capabilities struct
31  * TODO: Merge this with EEPROM code when we are done with it
32  */
ath5k_hw_set_capabilities(struct ath5k_hw * ah)33 int ath5k_hw_set_capabilities(struct ath5k_hw *ah)
34 {
35 	struct ath5k_capabilities *caps = &ah->ah_capabilities;
36 	u16 ee_header;
37 
38 	/* Capabilities stored in the EEPROM */
39 	ee_header = caps->cap_eeprom.ee_header;
40 
41 	if (ah->ah_version == AR5K_AR5210) {
42 		/*
43 		 * Set radio capabilities
44 		 * (The AR5110 only supports the middle 5GHz band)
45 		 */
46 		caps->cap_range.range_5ghz_min = 5120;
47 		caps->cap_range.range_5ghz_max = 5430;
48 		caps->cap_range.range_2ghz_min = 0;
49 		caps->cap_range.range_2ghz_max = 0;
50 
51 		/* Set supported modes */
52 		__set_bit(AR5K_MODE_11A, caps->cap_mode);
53 	} else {
54 		/*
55 		 * XXX The transceiver supports frequencies from 4920 to 6100MHz
56 		 * XXX and from 2312 to 2732MHz. There are problems with the
57 		 * XXX current ieee80211 implementation because the IEEE
58 		 * XXX channel mapping does not support negative channel
59 		 * XXX numbers (2312MHz is channel -19). Of course, this
60 		 * XXX doesn't matter because these channels are out of the
61 		 * XXX legal range.
62 		 */
63 
64 		/*
65 		 * Set radio capabilities
66 		 */
67 
68 		if (AR5K_EEPROM_HDR_11A(ee_header)) {
69 			if (ath_is_49ghz_allowed(caps->cap_eeprom.ee_regdomain))
70 				caps->cap_range.range_5ghz_min = 4920;
71 			else
72 				caps->cap_range.range_5ghz_min = 5005;
73 			caps->cap_range.range_5ghz_max = 6100;
74 
75 			/* Set supported modes */
76 			__set_bit(AR5K_MODE_11A, caps->cap_mode);
77 		}
78 
79 		/* Enable  802.11b if a 2GHz capable radio (2111/5112) is
80 		 * connected */
81 		if (AR5K_EEPROM_HDR_11B(ee_header) ||
82 		    (AR5K_EEPROM_HDR_11G(ee_header) &&
83 		     ah->ah_version != AR5K_AR5211)) {
84 			/* 2312 */
85 			caps->cap_range.range_2ghz_min = 2412;
86 			caps->cap_range.range_2ghz_max = 2732;
87 
88 			/* Override 2GHz modes on SoCs that need it
89 			 * NOTE: cap_needs_2GHz_ovr gets set from
90 			 * ath_ahb_probe */
91 			if (!caps->cap_needs_2GHz_ovr) {
92 				if (AR5K_EEPROM_HDR_11B(ee_header))
93 					__set_bit(AR5K_MODE_11B,
94 							caps->cap_mode);
95 
96 				if (AR5K_EEPROM_HDR_11G(ee_header) &&
97 				ah->ah_version != AR5K_AR5211)
98 					__set_bit(AR5K_MODE_11G,
99 							caps->cap_mode);
100 			}
101 		}
102 	}
103 
104 	if ((ah->ah_radio_5ghz_revision & 0xf0) == AR5K_SREV_RAD_2112)
105 		__clear_bit(AR5K_MODE_11A, caps->cap_mode);
106 
107 	/* Set number of supported TX queues */
108 	if (ah->ah_version == AR5K_AR5210)
109 		caps->cap_queues.q_tx_num = AR5K_NUM_TX_QUEUES_NOQCU;
110 	else
111 		caps->cap_queues.q_tx_num = AR5K_NUM_TX_QUEUES;
112 
113 	/* Newer hardware has PHY error counters */
114 	if (ah->ah_mac_srev >= AR5K_SREV_AR5213A)
115 		caps->cap_has_phyerr_counters = true;
116 	else
117 		caps->cap_has_phyerr_counters = false;
118 
119 	/* MACs since AR5212 have MRR support */
120 	if (ah->ah_version == AR5K_AR5212)
121 		caps->cap_has_mrr_support = true;
122 	else
123 		caps->cap_has_mrr_support = false;
124 
125 	return 0;
126 }
127 
128 /*
129  * TODO: Following functions should be part of a new function
130  * set_capability
131  */
132 
ath5k_hw_enable_pspoll(struct ath5k_hw * ah,u8 * bssid,u16 assoc_id)133 int ath5k_hw_enable_pspoll(struct ath5k_hw *ah, u8 *bssid,
134 		u16 assoc_id)
135 {
136 	if (ah->ah_version == AR5K_AR5210) {
137 		AR5K_REG_DISABLE_BITS(ah, AR5K_STA_ID1,
138 			AR5K_STA_ID1_NO_PSPOLL | AR5K_STA_ID1_DEFAULT_ANTENNA);
139 		return 0;
140 	}
141 
142 	return -EIO;
143 }
144 
ath5k_hw_disable_pspoll(struct ath5k_hw * ah)145 int ath5k_hw_disable_pspoll(struct ath5k_hw *ah)
146 {
147 	if (ah->ah_version == AR5K_AR5210) {
148 		AR5K_REG_ENABLE_BITS(ah, AR5K_STA_ID1,
149 			AR5K_STA_ID1_NO_PSPOLL | AR5K_STA_ID1_DEFAULT_ANTENNA);
150 		return 0;
151 	}
152 
153 	return -EIO;
154 }
155