xref: /openbmc/linux/drivers/net/wireless/ath/ath5k/caps.c (revision b6dcefde)
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 "base.h"
28 
29 /*
30  * Fill the capabilities struct
31  * TODO: Merge this with EEPROM code when we are done with it
32  */
33 int ath5k_hw_set_capabilities(struct ath5k_hw *ah)
34 {
35 	u16 ee_header;
36 
37 	ATH5K_TRACE(ah->ah_sc);
38 	/* Capabilities stored in the EEPROM */
39 	ee_header = ah->ah_capabilities.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 		ah->ah_capabilities.cap_range.range_5ghz_min = 5120;
47 		ah->ah_capabilities.cap_range.range_5ghz_max = 5430;
48 		ah->ah_capabilities.cap_range.range_2ghz_min = 0;
49 		ah->ah_capabilities.cap_range.range_2ghz_max = 0;
50 
51 		/* Set supported modes */
52 		__set_bit(AR5K_MODE_11A, ah->ah_capabilities.cap_mode);
53 		__set_bit(AR5K_MODE_11A_TURBO, ah->ah_capabilities.cap_mode);
54 	} else {
55 		/*
56 		 * XXX The tranceiver supports frequencies from 4920 to 6100GHz
57 		 * XXX and from 2312 to 2732GHz. There are problems with the
58 		 * XXX current ieee80211 implementation because the IEEE
59 		 * XXX channel mapping does not support negative channel
60 		 * XXX numbers (2312MHz is channel -19). Of course, this
61 		 * XXX doesn't matter because these channels are out of range
62 		 * XXX but some regulation domains like MKK (Japan) will
63 		 * XXX support frequencies somewhere around 4.8GHz.
64 		 */
65 
66 		/*
67 		 * Set radio capabilities
68 		 */
69 
70 		if (AR5K_EEPROM_HDR_11A(ee_header)) {
71 			/* 4920 */
72 			ah->ah_capabilities.cap_range.range_5ghz_min = 5005;
73 			ah->ah_capabilities.cap_range.range_5ghz_max = 6100;
74 
75 			/* Set supported modes */
76 			__set_bit(AR5K_MODE_11A,
77 					ah->ah_capabilities.cap_mode);
78 			__set_bit(AR5K_MODE_11A_TURBO,
79 					ah->ah_capabilities.cap_mode);
80 			if (ah->ah_version == AR5K_AR5212)
81 				__set_bit(AR5K_MODE_11G_TURBO,
82 						ah->ah_capabilities.cap_mode);
83 		}
84 
85 		/* Enable  802.11b if a 2GHz capable radio (2111/5112) is
86 		 * connected */
87 		if (AR5K_EEPROM_HDR_11B(ee_header) ||
88 		    (AR5K_EEPROM_HDR_11G(ee_header) &&
89 		     ah->ah_version != AR5K_AR5211)) {
90 			/* 2312 */
91 			ah->ah_capabilities.cap_range.range_2ghz_min = 2412;
92 			ah->ah_capabilities.cap_range.range_2ghz_max = 2732;
93 
94 			if (AR5K_EEPROM_HDR_11B(ee_header))
95 				__set_bit(AR5K_MODE_11B,
96 						ah->ah_capabilities.cap_mode);
97 
98 			if (AR5K_EEPROM_HDR_11G(ee_header) &&
99 			    ah->ah_version != AR5K_AR5211)
100 				__set_bit(AR5K_MODE_11G,
101 						ah->ah_capabilities.cap_mode);
102 		}
103 	}
104 
105 	/* GPIO */
106 	ah->ah_gpio_npins = AR5K_NUM_GPIO;
107 
108 	/* Set number of supported TX queues */
109 	if (ah->ah_version == AR5K_AR5210)
110 		ah->ah_capabilities.cap_queues.q_tx_num =
111 			AR5K_NUM_TX_QUEUES_NOQCU;
112 	else
113 		ah->ah_capabilities.cap_queues.q_tx_num = AR5K_NUM_TX_QUEUES;
114 
115 	return 0;
116 }
117 
118 /* Main function used by the driver part to check caps */
119 int ath5k_hw_get_capability(struct ath5k_hw *ah,
120 		enum ath5k_capability_type cap_type,
121 		u32 capability, u32 *result)
122 {
123 	ATH5K_TRACE(ah->ah_sc);
124 
125 	switch (cap_type) {
126 	case AR5K_CAP_NUM_TXQUEUES:
127 		if (result) {
128 			if (ah->ah_version == AR5K_AR5210)
129 				*result = AR5K_NUM_TX_QUEUES_NOQCU;
130 			else
131 				*result = AR5K_NUM_TX_QUEUES;
132 			goto yes;
133 		}
134 	case AR5K_CAP_VEOL:
135 		goto yes;
136 	case AR5K_CAP_COMPRESSION:
137 		if (ah->ah_version == AR5K_AR5212)
138 			goto yes;
139 		else
140 			goto no;
141 	case AR5K_CAP_BURST:
142 		goto yes;
143 	case AR5K_CAP_TPC:
144 		goto yes;
145 	case AR5K_CAP_BSSIDMASK:
146 		if (ah->ah_version == AR5K_AR5212)
147 			goto yes;
148 		else
149 			goto no;
150 	case AR5K_CAP_XR:
151 		if (ah->ah_version == AR5K_AR5212)
152 			goto yes;
153 		else
154 			goto no;
155 	default:
156 		goto no;
157 	}
158 
159 no:
160 	return -EINVAL;
161 yes:
162 	return 0;
163 }
164 
165 /*
166  * TODO: Following functions should be part of a new function
167  * set_capability
168  */
169 
170 int ath5k_hw_enable_pspoll(struct ath5k_hw *ah, u8 *bssid,
171 		u16 assoc_id)
172 {
173 	ATH5K_TRACE(ah->ah_sc);
174 
175 	if (ah->ah_version == AR5K_AR5210) {
176 		AR5K_REG_DISABLE_BITS(ah, AR5K_STA_ID1,
177 			AR5K_STA_ID1_NO_PSPOLL | AR5K_STA_ID1_DEFAULT_ANTENNA);
178 		return 0;
179 	}
180 
181 	return -EIO;
182 }
183 
184 int ath5k_hw_disable_pspoll(struct ath5k_hw *ah)
185 {
186 	ATH5K_TRACE(ah->ah_sc);
187 
188 	if (ah->ah_version == AR5K_AR5210) {
189 		AR5K_REG_ENABLE_BITS(ah, AR5K_STA_ID1,
190 			AR5K_STA_ID1_NO_PSPOLL | AR5K_STA_ID1_DEFAULT_ANTENNA);
191 		return 0;
192 	}
193 
194 	return -EIO;
195 }
196