1 /******************************************************************************
2 *
3 * This file is provided under a dual BSD/GPLv2 license. When using or
4 * redistributing this file, you may do so under either license.
5 *
6 * GPL LICENSE SUMMARY
7 *
8 * Copyright(c) 2014 Intel Mobile Communications GmbH
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of version 2 of the GNU General Public License as
12 * published by the Free Software Foundation.
13 *
14 * This program is distributed in the hope that it will be useful, but
15 * WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * General Public License for more details.
18 *
19 * The full GNU General Public License is included in this distribution
20 * in the file called COPYING.
21 *
22 * Contact Information:
23 * Intel Linux Wireless <linuxwifi@intel.com>
24 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
25 *
26 * BSD LICENSE
27 *
28 * Copyright(c) 2014 Intel Mobile Communications GmbH
29 * All rights reserved.
30 *
31 * Redistribution and use in source and binary forms, with or without
32 * modification, are permitted provided that the following conditions
33 * are met:
34 *
35 * * Redistributions of source code must retain the above copyright
36 * notice, this list of conditions and the following disclaimer.
37 * * Redistributions in binary form must reproduce the above copyright
38 * notice, this list of conditions and the following disclaimer in
39 * the documentation and/or other materials provided with the
40 * distribution.
41 * * Neither the name Intel Corporation nor the names of its
42 * contributors may be used to endorse or promote products derived
43 * from this software without specific prior written permission.
44 *
45 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
46 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
47 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
48 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
49 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
50 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
51 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
52 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
53 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
54 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
55 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
56 *
57 *****************************************************************************/
58
59 #ifndef __iwl_scd_h__
60 #define __iwl_scd_h__
61
62 #include "iwl-trans.h"
63 #include "iwl-io.h"
64 #include "iwl-prph.h"
65
66
67 static inline void iwl_scd_txq_set_chain(struct iwl_trans *trans,
68 u16 txq_id)
69 {
70 iwl_set_bits_prph(trans, SCD_QUEUECHAIN_SEL, BIT(txq_id));
71 }
72
73 static inline void iwl_scd_txq_enable_agg(struct iwl_trans *trans,
74 u16 txq_id)
75 {
76 iwl_set_bits_prph(trans, SCD_AGGR_SEL, BIT(txq_id));
77 }
78
79 static inline void iwl_scd_txq_disable_agg(struct iwl_trans *trans,
80 u16 txq_id)
81 {
82 iwl_clear_bits_prph(trans, SCD_AGGR_SEL, BIT(txq_id));
83 }
84
85 static inline void iwl_scd_disable_agg(struct iwl_trans *trans)
86 {
87 iwl_set_bits_prph(trans, SCD_AGGR_SEL, 0);
88 }
89
90 static inline void iwl_scd_activate_fifos(struct iwl_trans *trans)
91 {
92 iwl_write_prph(trans, SCD_TXFACT, IWL_MASK(0, 7));
93 }
94
95 static inline void iwl_scd_deactivate_fifos(struct iwl_trans *trans)
96 {
97 iwl_write_prph(trans, SCD_TXFACT, 0);
98 }
99
100 static inline void iwl_scd_enable_set_active(struct iwl_trans *trans,
101 u32 value)
102 {
103 iwl_write_prph(trans, SCD_EN_CTRL, value);
104 }
105
106 static inline unsigned int SCD_QUEUE_WRPTR(unsigned int chnl)
107 {
108 if (chnl < 20)
109 return SCD_BASE + 0x18 + chnl * 4;
110 WARN_ON_ONCE(chnl >= 32);
111 return SCD_BASE + 0x284 + (chnl - 20) * 4;
112 }
113
114 static inline unsigned int SCD_QUEUE_RDPTR(unsigned int chnl)
115 {
116 if (chnl < 20)
117 return SCD_BASE + 0x68 + chnl * 4;
118 WARN_ON_ONCE(chnl >= 32);
119 return SCD_BASE + 0x2B4 + chnl * 4;
120 }
121
122 static inline unsigned int SCD_QUEUE_STATUS_BITS(unsigned int chnl)
123 {
124 if (chnl < 20)
125 return SCD_BASE + 0x10c + chnl * 4;
126 WARN_ON_ONCE(chnl >= 32);
127 return SCD_BASE + 0x334 + chnl * 4;
128 }
129
130 static inline void iwl_scd_txq_set_inactive(struct iwl_trans *trans,
131 u16 txq_id)
132 {
133 iwl_write_prph(trans, SCD_QUEUE_STATUS_BITS(txq_id),
134 (0 << SCD_QUEUE_STTS_REG_POS_ACTIVE)|
135 (1 << SCD_QUEUE_STTS_REG_POS_SCD_ACT_EN));
136 }
137
138 #endif