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) 2012 - 2014 Intel Corporation. All rights reserved.
9  * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
10  * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
11  * Copyright(c) 2018 Intel Corporation
12  *
13  * This program is free software; you can redistribute it and/or modify
14  * it under the terms of version 2 of the GNU General Public License as
15  * published by the Free Software Foundation.
16  *
17  * This program is distributed in the hope that it will be useful, but
18  * WITHOUT ANY WARRANTY; without even the implied warranty of
19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
20  * General Public License for more details.
21  *
22  * The full GNU General Public License is included in this distribution
23  * in the file called COPYING.
24  *
25  * Contact Information:
26  *  Intel Linux Wireless <linuxwifi@intel.com>
27  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
28  *
29  * BSD LICENSE
30  *
31  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
32  * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
33  * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
34  * Copyright(c) 2018 Intel Corporation
35  * All rights reserved.
36  *
37  * Redistribution and use in source and binary forms, with or without
38  * modification, are permitted provided that the following conditions
39  * are met:
40  *
41  *  * Redistributions of source code must retain the above copyright
42  *    notice, this list of conditions and the following disclaimer.
43  *  * Redistributions in binary form must reproduce the above copyright
44  *    notice, this list of conditions and the following disclaimer in
45  *    the documentation and/or other materials provided with the
46  *    distribution.
47  *  * Neither the name Intel Corporation nor the names of its
48  *    contributors may be used to endorse or promote products derived
49  *    from this software without specific prior written permission.
50  *
51  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
52  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
53  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
54  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
55  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
56  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
57  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
58  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
59  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
60  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
61  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
62  *
63  *****************************************************************************/
64 #include "iwl-drv.h"
65 #include "runtime.h"
66 #include "fw/api/commands.h"
67 
68 static void iwl_parse_shared_mem_22000(struct iwl_fw_runtime *fwrt,
69 				       struct iwl_rx_packet *pkt)
70 {
71 	struct iwl_shared_mem_cfg *mem_cfg = (void *)pkt->data;
72 	int i, lmac;
73 	int lmac_num = le32_to_cpu(mem_cfg->lmac_num);
74 
75 	if (WARN_ON(lmac_num > ARRAY_SIZE(mem_cfg->lmac_smem)))
76 		return;
77 
78 	fwrt->smem_cfg.num_lmacs = lmac_num;
79 	fwrt->smem_cfg.num_txfifo_entries =
80 		ARRAY_SIZE(mem_cfg->lmac_smem[0].txfifo_size);
81 	fwrt->smem_cfg.rxfifo2_size = le32_to_cpu(mem_cfg->rxfifo2_size);
82 
83 	for (lmac = 0; lmac < lmac_num; lmac++) {
84 		struct iwl_shared_mem_lmac_cfg *lmac_cfg =
85 			&mem_cfg->lmac_smem[lmac];
86 
87 		for (i = 0; i < ARRAY_SIZE(lmac_cfg->txfifo_size); i++)
88 			fwrt->smem_cfg.lmac[lmac].txfifo_size[i] =
89 				le32_to_cpu(lmac_cfg->txfifo_size[i]);
90 		fwrt->smem_cfg.lmac[lmac].rxfifo1_size =
91 			le32_to_cpu(lmac_cfg->rxfifo1_size);
92 	}
93 }
94 
95 static void iwl_parse_shared_mem(struct iwl_fw_runtime *fwrt,
96 				 struct iwl_rx_packet *pkt)
97 {
98 	struct iwl_shared_mem_cfg_v2 *mem_cfg = (void *)pkt->data;
99 	int i;
100 
101 	fwrt->smem_cfg.num_lmacs = 1;
102 
103 	fwrt->smem_cfg.num_txfifo_entries = ARRAY_SIZE(mem_cfg->txfifo_size);
104 	for (i = 0; i < ARRAY_SIZE(mem_cfg->txfifo_size); i++)
105 		fwrt->smem_cfg.lmac[0].txfifo_size[i] =
106 			le32_to_cpu(mem_cfg->txfifo_size[i]);
107 
108 	fwrt->smem_cfg.lmac[0].rxfifo1_size =
109 		le32_to_cpu(mem_cfg->rxfifo_size[0]);
110 	fwrt->smem_cfg.rxfifo2_size = le32_to_cpu(mem_cfg->rxfifo_size[1]);
111 
112 	/* new API has more data, from rxfifo_addr field and on */
113 	if (fw_has_capa(&fwrt->fw->ucode_capa,
114 			IWL_UCODE_TLV_CAPA_EXTEND_SHARED_MEM_CFG)) {
115 		BUILD_BUG_ON(sizeof(fwrt->smem_cfg.internal_txfifo_size) !=
116 			     sizeof(mem_cfg->internal_txfifo_size));
117 
118 		fwrt->smem_cfg.internal_txfifo_addr =
119 			le32_to_cpu(mem_cfg->internal_txfifo_addr);
120 
121 		for (i = 0;
122 		     i < ARRAY_SIZE(fwrt->smem_cfg.internal_txfifo_size);
123 		     i++)
124 			fwrt->smem_cfg.internal_txfifo_size[i] =
125 				le32_to_cpu(mem_cfg->internal_txfifo_size[i]);
126 	}
127 }
128 
129 void iwl_get_shared_mem_conf(struct iwl_fw_runtime *fwrt)
130 {
131 	struct iwl_host_cmd cmd = {
132 		.flags = CMD_WANT_SKB,
133 		.data = { NULL, },
134 		.len = { 0, },
135 	};
136 	struct iwl_rx_packet *pkt;
137 
138 	if (fw_has_capa(&fwrt->fw->ucode_capa,
139 			IWL_UCODE_TLV_CAPA_EXTEND_SHARED_MEM_CFG))
140 		cmd.id = iwl_cmd_id(SHARED_MEM_CFG_CMD, SYSTEM_GROUP, 0);
141 	else
142 		cmd.id = SHARED_MEM_CFG;
143 
144 	if (WARN_ON(iwl_trans_send_cmd(fwrt->trans, &cmd)))
145 		return;
146 
147 	pkt = cmd.resp_pkt;
148 	if (fwrt->trans->cfg->device_family >= IWL_DEVICE_FAMILY_22000)
149 		iwl_parse_shared_mem_22000(fwrt, pkt);
150 	else
151 		iwl_parse_shared_mem(fwrt, pkt);
152 
153 	IWL_DEBUG_INFO(fwrt, "SHARED MEM CFG: got memory offsets/sizes\n");
154 
155 	iwl_free_resp(&cmd);
156 }
157 IWL_EXPORT_SYMBOL(iwl_get_shared_mem_conf);
158