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4  * redistributing this file, you may do so under either license.
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6  * GPL LICENSE SUMMARY
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8  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
9  * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
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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 - 2019 Intel Corporation
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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 	int ret;
138 
139 	if (fw_has_capa(&fwrt->fw->ucode_capa,
140 			IWL_UCODE_TLV_CAPA_EXTEND_SHARED_MEM_CFG))
141 		cmd.id = iwl_cmd_id(SHARED_MEM_CFG_CMD, SYSTEM_GROUP, 0);
142 	else
143 		cmd.id = SHARED_MEM_CFG;
144 
145 	ret = iwl_trans_send_cmd(fwrt->trans, &cmd);
146 
147 	if (ret) {
148 		WARN(ret != -ERFKILL,
149 		     "Could not send the SMEM command: %d\n", ret);
150 		return;
151 	}
152 
153 	pkt = cmd.resp_pkt;
154 	if (fwrt->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_22000)
155 		iwl_parse_shared_mem_22000(fwrt, pkt);
156 	else
157 		iwl_parse_shared_mem(fwrt, pkt);
158 
159 	IWL_DEBUG_INFO(fwrt, "SHARED MEM CFG: got memory offsets/sizes\n");
160 
161 	iwl_free_resp(&cmd);
162 }
163 IWL_EXPORT_SYMBOL(iwl_get_shared_mem_conf);
164