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) 2017 Intel Deutschland GmbH
9 * Copyright(c) 2018 - 2019 Intel Corporation
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of version 2 of the GNU General Public License as
13 * published by the Free Software Foundation.
14 *
15 * This program is distributed in the hope that it will be useful, but
16 * WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * General Public License for more details.
19 *
20 * BSD LICENSE
21 *
22 * Copyright(c) 2017 Intel Deutschland GmbH
23 * Copyright(c) 2018 - 2019 Intel Corporation
24 * All rights reserved.
25 *
26 * Redistribution and use in source and binary forms, with or without
27 * modification, are permitted provided that the following conditions
28 * are met:
29 *
30 * * Redistributions of source code must retain the above copyright
31 * notice, this list of conditions and the following disclaimer.
32 * * Redistributions in binary form must reproduce the above copyright
33 * notice, this list of conditions and the following disclaimer in
34 * the documentation and/or other materials provided with the
35 * distribution.
36 * * Neither the name Intel Corporation nor the names of its
37 * contributors may be used to endorse or promote products derived
38 * from this software without specific prior written permission.
39 *
40 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
41 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
42 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
43 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
44 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
45 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
46 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
47 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
48 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
49 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
50 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
51 *
52 *****************************************************************************/
53
54 #include "iwl-trans.h"
55 #include "iwl-fh.h"
56 #include "iwl-context-info.h"
57 #include "internal.h"
58 #include "iwl-prph.h"
59
60 void iwl_pcie_ctxt_info_free_paging(struct iwl_trans *trans)
61 {
62 struct iwl_self_init_dram *dram = &trans->init_dram;
63 int i;
64
65 if (!dram->paging) {
66 WARN_ON(dram->paging_cnt);
67 return;
68 }
69
70 /* free paging*/
71 for (i = 0; i < dram->paging_cnt; i++)
72 dma_free_coherent(trans->dev, dram->paging[i].size,
73 dram->paging[i].block,
74 dram->paging[i].physical);
75
76 kfree(dram->paging);
77 dram->paging_cnt = 0;
78 dram->paging = NULL;
79 }
80
81 int iwl_pcie_init_fw_sec(struct iwl_trans *trans,
82 const struct fw_img *fw,
83 struct iwl_context_info_dram *ctxt_dram)
84 {
85 struct iwl_self_init_dram *dram = &trans->init_dram;
86 int i, ret, lmac_cnt, umac_cnt, paging_cnt;
87
88 if (WARN(dram->paging,
89 "paging shouldn't already be initialized (%d pages)\n",
90 dram->paging_cnt))
91 iwl_pcie_ctxt_info_free_paging(trans);
92
93 lmac_cnt = iwl_pcie_get_num_sections(fw, 0);
94 /* add 1 due to separator */
95 umac_cnt = iwl_pcie_get_num_sections(fw, lmac_cnt + 1);
96 /* add 2 due to separators */
97 paging_cnt = iwl_pcie_get_num_sections(fw, lmac_cnt + umac_cnt + 2);
98
99 dram->fw = kcalloc(umac_cnt + lmac_cnt, sizeof(*dram->fw), GFP_KERNEL);
100 if (!dram->fw)
101 return -ENOMEM;
102 dram->paging = kcalloc(paging_cnt, sizeof(*dram->paging), GFP_KERNEL);
103 if (!dram->paging)
104 return -ENOMEM;
105
106 /* initialize lmac sections */
107 for (i = 0; i < lmac_cnt; i++) {
108 ret = iwl_pcie_ctxt_info_alloc_dma(trans, &fw->sec[i],
109 &dram->fw[dram->fw_cnt]);
110 if (ret)
111 return ret;
112 ctxt_dram->lmac_img[i] =
113 cpu_to_le64(dram->fw[dram->fw_cnt].physical);
114 dram->fw_cnt++;
115 }
116
117 /* initialize umac sections */
118 for (i = 0; i < umac_cnt; i++) {
119 /* access FW with +1 to make up for lmac separator */
120 ret = iwl_pcie_ctxt_info_alloc_dma(trans,
121 &fw->sec[dram->fw_cnt + 1],
122 &dram->fw[dram->fw_cnt]);
123 if (ret)
124 return ret;
125 ctxt_dram->umac_img[i] =
126 cpu_to_le64(dram->fw[dram->fw_cnt].physical);
127 dram->fw_cnt++;
128 }
129
130 /*
131 * Initialize paging.
132 * Paging memory isn't stored in dram->fw as the umac and lmac - it is
133 * stored separately.
134 * This is since the timing of its release is different -
135 * while fw memory can be released on alive, the paging memory can be
136 * freed only when the device goes down.
137 * Given that, the logic here in accessing the fw image is a bit
138 * different - fw_cnt isn't changing so loop counter is added to it.
139 */
140 for (i = 0; i < paging_cnt; i++) {
141 /* access FW with +2 to make up for lmac & umac separators */
142 int fw_idx = dram->fw_cnt + i + 2;
143
144 ret = iwl_pcie_ctxt_info_alloc_dma(trans, &fw->sec[fw_idx],
145 &dram->paging[i]);
146 if (ret)
147 return ret;
148
149 ctxt_dram->virtual_img[i] =
150 cpu_to_le64(dram->paging[i].physical);
151 dram->paging_cnt++;
152 }
153
154 return 0;
155 }
156
157 int iwl_pcie_ctxt_info_init(struct iwl_trans *trans,
158 const struct fw_img *fw)
159 {
160 struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
161 struct iwl_context_info *ctxt_info;
162 struct iwl_context_info_rbd_cfg *rx_cfg;
163 u32 control_flags = 0, rb_size;
164 int ret;
165
166 ctxt_info = dma_alloc_coherent(trans->dev, sizeof(*ctxt_info),
167 &trans_pcie->ctxt_info_dma_addr,
168 GFP_KERNEL);
169 if (!ctxt_info)
170 return -ENOMEM;
171
172 ctxt_info->version.version = 0;
173 ctxt_info->version.mac_id =
174 cpu_to_le16((u16)iwl_read32(trans, CSR_HW_REV));
175 /* size is in DWs */
176 ctxt_info->version.size = cpu_to_le16(sizeof(*ctxt_info) / 4);
177
178 switch (trans_pcie->rx_buf_size) {
179 case IWL_AMSDU_2K:
180 rb_size = IWL_CTXT_INFO_RB_SIZE_2K;
181 break;
182 case IWL_AMSDU_4K:
183 rb_size = IWL_CTXT_INFO_RB_SIZE_4K;
184 break;
185 case IWL_AMSDU_8K:
186 rb_size = IWL_CTXT_INFO_RB_SIZE_8K;
187 break;
188 case IWL_AMSDU_12K:
189 rb_size = IWL_CTXT_INFO_RB_SIZE_12K;
190 break;
191 default:
192 WARN_ON(1);
193 rb_size = IWL_CTXT_INFO_RB_SIZE_4K;
194 }
195
196 BUILD_BUG_ON(RX_QUEUE_CB_SIZE(MQ_RX_TABLE_SIZE) > 0xF);
197 control_flags = IWL_CTXT_INFO_TFD_FORMAT_LONG |
198 (RX_QUEUE_CB_SIZE(MQ_RX_TABLE_SIZE) <<
199 IWL_CTXT_INFO_RB_CB_SIZE_POS) |
200 (rb_size << IWL_CTXT_INFO_RB_SIZE_POS);
201 ctxt_info->control.control_flags = cpu_to_le32(control_flags);
202
203 /* initialize RX default queue */
204 rx_cfg = &ctxt_info->rbd_cfg;
205 rx_cfg->free_rbd_addr = cpu_to_le64(trans_pcie->rxq->bd_dma);
206 rx_cfg->used_rbd_addr = cpu_to_le64(trans_pcie->rxq->used_bd_dma);
207 rx_cfg->status_wr_ptr = cpu_to_le64(trans_pcie->rxq->rb_stts_dma);
208
209 /* initialize TX command queue */
210 ctxt_info->hcmd_cfg.cmd_queue_addr =
211 cpu_to_le64(trans_pcie->txq[trans_pcie->cmd_queue]->dma_addr);
212 ctxt_info->hcmd_cfg.cmd_queue_size =
213 TFD_QUEUE_CB_SIZE(IWL_CMD_QUEUE_SIZE);
214
215 /* allocate ucode sections in dram and set addresses */
216 ret = iwl_pcie_init_fw_sec(trans, fw, &ctxt_info->dram);
217 if (ret) {
218 dma_free_coherent(trans->dev, sizeof(*trans_pcie->ctxt_info),
219 ctxt_info, trans_pcie->ctxt_info_dma_addr);
220 return ret;
221 }
222
223 trans_pcie->ctxt_info = ctxt_info;
224
225 iwl_enable_fw_load_int_ctx_info(trans);
226
227 /* Configure debug, if exists */
228 if (iwl_pcie_dbg_on(trans))
229 iwl_pcie_apply_destination(trans);
230
231 /* kick FW self load */
232 iwl_write64(trans, CSR_CTXT_INFO_BA, trans_pcie->ctxt_info_dma_addr);
233 iwl_write_prph(trans, UREG_CPU_INIT_RUN, 1);
234
235 /* Context info will be released upon alive or failure to get one */
236
237 return 0;
238 }
239
240 void iwl_pcie_ctxt_info_free(struct iwl_trans *trans)
241 {
242 struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
243
244 if (!trans_pcie->ctxt_info)
245 return;
246
247 dma_free_coherent(trans->dev, sizeof(*trans_pcie->ctxt_info),
248 trans_pcie->ctxt_info,
249 trans_pcie->ctxt_info_dma_addr);
250 trans_pcie->ctxt_info_dma_addr = 0;
251 trans_pcie->ctxt_info = NULL;
252
253 iwl_pcie_ctxt_info_free_fw_img(trans);
254 }