1// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
2/*
3 * Copyright (C) 2012-2014, 2018-2021 Intel Corporation
4 * Copyright (C) 2013-2015 Intel Mobile Communications GmbH
5 * Copyright (C) 2016-2017 Intel Deutschland GmbH
6 */
7#include "iwl-drv.h"
8#include "runtime.h"
9#include "fw/api/commands.h"
10
11static void iwl_parse_shared_mem_22000(struct iwl_fw_runtime *fwrt,
12				       struct iwl_rx_packet *pkt)
13{
14	struct iwl_shared_mem_cfg *mem_cfg = (void *)pkt->data;
15	int i, lmac;
16	int lmac_num = le32_to_cpu(mem_cfg->lmac_num);
17	u8 api_ver = iwl_fw_lookup_notif_ver(fwrt->fw, SYSTEM_GROUP,
18					     SHARED_MEM_CFG_CMD, 0);
19
20	if (WARN_ON(lmac_num > ARRAY_SIZE(mem_cfg->lmac_smem)))
21		return;
22
23	fwrt->smem_cfg.num_lmacs = lmac_num;
24	fwrt->smem_cfg.num_txfifo_entries =
25		ARRAY_SIZE(mem_cfg->lmac_smem[0].txfifo_size);
26	fwrt->smem_cfg.rxfifo2_size = le32_to_cpu(mem_cfg->rxfifo2_size);
27
28	if (api_ver >= 4 &&
29	    !WARN_ON_ONCE(iwl_rx_packet_payload_len(pkt) < sizeof(*mem_cfg))) {
30		fwrt->smem_cfg.rxfifo2_control_size =
31			le32_to_cpu(mem_cfg->rxfifo2_control_size);
32	}
33
34	for (lmac = 0; lmac < lmac_num; lmac++) {
35		struct iwl_shared_mem_lmac_cfg *lmac_cfg =
36			&mem_cfg->lmac_smem[lmac];
37
38		for (i = 0; i < ARRAY_SIZE(lmac_cfg->txfifo_size); i++)
39			fwrt->smem_cfg.lmac[lmac].txfifo_size[i] =
40				le32_to_cpu(lmac_cfg->txfifo_size[i]);
41		fwrt->smem_cfg.lmac[lmac].rxfifo1_size =
42			le32_to_cpu(lmac_cfg->rxfifo1_size);
43	}
44}
45
46static void iwl_parse_shared_mem(struct iwl_fw_runtime *fwrt,
47				 struct iwl_rx_packet *pkt)
48{
49	struct iwl_shared_mem_cfg_v2 *mem_cfg = (void *)pkt->data;
50	int i;
51
52	fwrt->smem_cfg.num_lmacs = 1;
53
54	fwrt->smem_cfg.num_txfifo_entries = ARRAY_SIZE(mem_cfg->txfifo_size);
55	for (i = 0; i < ARRAY_SIZE(mem_cfg->txfifo_size); i++)
56		fwrt->smem_cfg.lmac[0].txfifo_size[i] =
57			le32_to_cpu(mem_cfg->txfifo_size[i]);
58
59	fwrt->smem_cfg.lmac[0].rxfifo1_size =
60		le32_to_cpu(mem_cfg->rxfifo_size[0]);
61	fwrt->smem_cfg.rxfifo2_size = le32_to_cpu(mem_cfg->rxfifo_size[1]);
62
63	/* new API has more data, from rxfifo_addr field and on */
64	if (fw_has_capa(&fwrt->fw->ucode_capa,
65			IWL_UCODE_TLV_CAPA_EXTEND_SHARED_MEM_CFG)) {
66		BUILD_BUG_ON(sizeof(fwrt->smem_cfg.internal_txfifo_size) !=
67			     sizeof(mem_cfg->internal_txfifo_size));
68
69		fwrt->smem_cfg.internal_txfifo_addr =
70			le32_to_cpu(mem_cfg->internal_txfifo_addr);
71
72		for (i = 0;
73		     i < ARRAY_SIZE(fwrt->smem_cfg.internal_txfifo_size);
74		     i++)
75			fwrt->smem_cfg.internal_txfifo_size[i] =
76				le32_to_cpu(mem_cfg->internal_txfifo_size[i]);
77	}
78}
79
80void iwl_get_shared_mem_conf(struct iwl_fw_runtime *fwrt)
81{
82	struct iwl_host_cmd cmd = {
83		.flags = CMD_WANT_SKB,
84		.data = { NULL, },
85		.len = { 0, },
86	};
87	struct iwl_rx_packet *pkt;
88	int ret;
89
90	if (fw_has_capa(&fwrt->fw->ucode_capa,
91			IWL_UCODE_TLV_CAPA_EXTEND_SHARED_MEM_CFG))
92		cmd.id = WIDE_ID(SYSTEM_GROUP, SHARED_MEM_CFG_CMD);
93	else
94		cmd.id = SHARED_MEM_CFG;
95
96	ret = iwl_trans_send_cmd(fwrt->trans, &cmd);
97
98	if (ret) {
99		WARN(ret != -ERFKILL,
100		     "Could not send the SMEM command: %d\n", ret);
101		return;
102	}
103
104	pkt = cmd.resp_pkt;
105	if (fwrt->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_22000)
106		iwl_parse_shared_mem_22000(fwrt, pkt);
107	else
108		iwl_parse_shared_mem(fwrt, pkt);
109
110	IWL_DEBUG_INFO(fwrt, "SHARED MEM CFG: got memory offsets/sizes\n");
111
112	iwl_free_resp(&cmd);
113}
114IWL_EXPORT_SYMBOL(iwl_get_shared_mem_conf);
115