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1// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
2/*
3 * Copyright (C) 2012-2014, 2018-2019, 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
11void iwl_free_fw_paging(struct iwl_fw_runtime *fwrt)
12{
13 int i;
14
15 if (!fwrt->fw_paging_db[0].fw_paging_block)
16 return;
17
18 for (i = 0; i < NUM_OF_FW_PAGING_BLOCKS; i++) {
19 struct iwl_fw_paging *paging = &fwrt->fw_paging_db[i];
20
21 if (!paging->fw_paging_block) {
22 IWL_DEBUG_FW(fwrt,
23 "Paging: block %d already freed, continue to next page\n",
24 i);
25
26 continue;
27 }
28 dma_unmap_page(fwrt->trans->dev, paging->fw_paging_phys,
29 paging->fw_paging_size, DMA_BIDIRECTIONAL);
30
31 __free_pages(paging->fw_paging_block,
32 get_order(paging->fw_paging_size));
33 paging->fw_paging_block = NULL;
34 }
35
36 memset(fwrt->fw_paging_db, 0, sizeof(fwrt->fw_paging_db));
37}
38IWL_EXPORT_SYMBOL(iwl_free_fw_paging);
39
40static int iwl_alloc_fw_paging_mem(struct iwl_fw_runtime *fwrt,
41 const struct fw_img *image)
42{
43 struct page *block;
44 dma_addr_t phys = 0;
45 int blk_idx, order, num_of_pages, size;
46
47 if (fwrt->fw_paging_db[0].fw_paging_block)
48 return 0;
49
50 /* ensure BLOCK_2_EXP_SIZE is power of 2 of PAGING_BLOCK_SIZE */
51 BUILD_BUG_ON(BIT(BLOCK_2_EXP_SIZE) != PAGING_BLOCK_SIZE);
52
53 num_of_pages = image->paging_mem_size / FW_PAGING_SIZE;
54 fwrt->num_of_paging_blk =
55 DIV_ROUND_UP(num_of_pages, NUM_OF_PAGE_PER_GROUP);
56 fwrt->num_of_pages_in_last_blk =
57 num_of_pages -
58 NUM_OF_PAGE_PER_GROUP * (fwrt->num_of_paging_blk - 1);
59
60 IWL_DEBUG_FW(fwrt,
61 "Paging: allocating mem for %d paging blocks, each block holds 8 pages, last block holds %d pages\n",
62 fwrt->num_of_paging_blk,
63 fwrt->num_of_pages_in_last_blk);
64
65 /*
66 * Allocate CSS and paging blocks in dram.
67 */
68 for (blk_idx = 0; blk_idx < fwrt->num_of_paging_blk + 1; blk_idx++) {
69 /* For CSS allocate 4KB, for others PAGING_BLOCK_SIZE (32K) */
70 size = blk_idx ? PAGING_BLOCK_SIZE : FW_PAGING_SIZE;
71 order = get_order(size);
72 block = alloc_pages(GFP_KERNEL, order);
73 if (!block) {
74 /* free all the previous pages since we failed */
75 iwl_free_fw_paging(fwrt);
76 return -ENOMEM;
77 }
78
79 fwrt->fw_paging_db[blk_idx].fw_paging_block = block;
80 fwrt->fw_paging_db[blk_idx].fw_paging_size = size;
81
82 phys = dma_map_page(fwrt->trans->dev, block, 0,
83 PAGE_SIZE << order,
84 DMA_BIDIRECTIONAL);
85 if (dma_mapping_error(fwrt->trans->dev, phys)) {
86 /*
87 * free the previous pages and the current one
88 * since we failed to map_page.
89 */
90 iwl_free_fw_paging(fwrt);
91 return -ENOMEM;
92 }
93 fwrt->fw_paging_db[blk_idx].fw_paging_phys = phys;
94
95 if (!blk_idx)
96 IWL_DEBUG_FW(fwrt,
97 "Paging: allocated 4K(CSS) bytes (order %d) for firmware paging.\n",
98 order);
99 else
100 IWL_DEBUG_FW(fwrt,
101 "Paging: allocated 32K bytes (order %d) for firmware paging.\n",
102 order);
103 }
104
105 return 0;
106}
107
108static int iwl_fill_paging_mem(struct iwl_fw_runtime *fwrt,
109 const struct fw_img *image)
110{
111 int sec_idx, idx, ret;
112 u32 offset = 0;
113
114 /*
115 * find where is the paging image start point:
116 * if CPU2 exist and it's in paging format, then the image looks like:
117 * CPU1 sections (2 or more)
118 * CPU1_CPU2_SEPARATOR_SECTION delimiter - separate between CPU1 to CPU2
119 * CPU2 sections (not paged)
120 * PAGING_SEPARATOR_SECTION delimiter - separate between CPU2
121 * non paged to CPU2 paging sec
122 * CPU2 paging CSS
123 * CPU2 paging image (including instruction and data)
124 */
125 for (sec_idx = 0; sec_idx < image->num_sec; sec_idx++) {
126 if (image->sec[sec_idx].offset == PAGING_SEPARATOR_SECTION) {
127 sec_idx++;
128 break;
129 }
130 }
131
132 /*
133 * If paging is enabled there should be at least 2 more sections left
134 * (one for CSS and one for Paging data)
135 */
136 if (sec_idx >= image->num_sec - 1) {
137 IWL_ERR(fwrt, "Paging: Missing CSS and/or paging sections\n");
138 ret = -EINVAL;
139 goto err;
140 }
141
142 /* copy the CSS block to the dram */
143 IWL_DEBUG_FW(fwrt, "Paging: load paging CSS to FW, sec = %d\n",
144 sec_idx);
145
146 if (image->sec[sec_idx].len > fwrt->fw_paging_db[0].fw_paging_size) {
147 IWL_ERR(fwrt, "CSS block is larger than paging size\n");
148 ret = -EINVAL;
149 goto err;
150 }
151
152 memcpy(page_address(fwrt->fw_paging_db[0].fw_paging_block),
153 image->sec[sec_idx].data,
154 image->sec[sec_idx].len);
155 fwrt->fw_paging_db[0].fw_offs = image->sec[sec_idx].offset;
156 dma_sync_single_for_device(fwrt->trans->dev,
157 fwrt->fw_paging_db[0].fw_paging_phys,
158 fwrt->fw_paging_db[0].fw_paging_size,
159 DMA_BIDIRECTIONAL);
160
161 IWL_DEBUG_FW(fwrt,
162 "Paging: copied %d CSS bytes to first block\n",
163 fwrt->fw_paging_db[0].fw_paging_size);
164
165 sec_idx++;
166
167 /*
168 * Copy the paging blocks to the dram. The loop index starts
169 * from 1 since the CSS block (index 0) was already copied to
170 * dram. We use num_of_paging_blk + 1 to account for that.
171 */
172 for (idx = 1; idx < fwrt->num_of_paging_blk + 1; idx++) {
173 struct iwl_fw_paging *block = &fwrt->fw_paging_db[idx];
174 int remaining = image->sec[sec_idx].len - offset;
175 int len = block->fw_paging_size;
176
177 /*
178 * For the last block, we copy all that is remaining,
179 * for all other blocks, we copy fw_paging_size at a
180 * time. */
181 if (idx == fwrt->num_of_paging_blk) {
182 len = remaining;
183 if (remaining !=
184 fwrt->num_of_pages_in_last_blk * FW_PAGING_SIZE) {
185 IWL_ERR(fwrt,
186 "Paging: last block contains more data than expected %d\n",
187 remaining);
188 ret = -EINVAL;
189 goto err;
190 }
191 } else if (block->fw_paging_size > remaining) {
192 IWL_ERR(fwrt,
193 "Paging: not enough data in other in block %d (%d)\n",
194 idx, remaining);
195 ret = -EINVAL;
196 goto err;
197 }
198
199 memcpy(page_address(block->fw_paging_block),
200 (const u8 *)image->sec[sec_idx].data + offset, len);
201 block->fw_offs = image->sec[sec_idx].offset + offset;
202 dma_sync_single_for_device(fwrt->trans->dev,
203 block->fw_paging_phys,
204 block->fw_paging_size,
205 DMA_BIDIRECTIONAL);
206
207 IWL_DEBUG_FW(fwrt,
208 "Paging: copied %d paging bytes to block %d\n",
209 len, idx);
210
211 offset += block->fw_paging_size;
212 }
213
214 return 0;
215
216err:
217 iwl_free_fw_paging(fwrt);
218 return ret;
219}
220
221static int iwl_save_fw_paging(struct iwl_fw_runtime *fwrt,
222 const struct fw_img *fw)
223{
224 int ret;
225
226 ret = iwl_alloc_fw_paging_mem(fwrt, fw);
227 if (ret)
228 return ret;
229
230 return iwl_fill_paging_mem(fwrt, fw);
231}
232
233/* send paging cmd to FW in case CPU2 has paging image */
234static int iwl_send_paging_cmd(struct iwl_fw_runtime *fwrt,
235 const struct fw_img *fw)
236{
237 struct iwl_fw_paging_cmd paging_cmd = {
238 .flags = cpu_to_le32(PAGING_CMD_IS_SECURED |
239 PAGING_CMD_IS_ENABLED |
240 (fwrt->num_of_pages_in_last_blk <<
241 PAGING_CMD_NUM_OF_PAGES_IN_LAST_GRP_POS)),
242 .block_size = cpu_to_le32(BLOCK_2_EXP_SIZE),
243 .block_num = cpu_to_le32(fwrt->num_of_paging_blk),
244 };
245 struct iwl_host_cmd hcmd = {
246 .id = WIDE_ID(IWL_ALWAYS_LONG_GROUP, FW_PAGING_BLOCK_CMD),
247 .len = { sizeof(paging_cmd), },
248 .data = { &paging_cmd, },
249 };
250 int blk_idx;
251
252 /* loop for for all paging blocks + CSS block */
253 for (blk_idx = 0; blk_idx < fwrt->num_of_paging_blk + 1; blk_idx++) {
254 dma_addr_t addr = fwrt->fw_paging_db[blk_idx].fw_paging_phys;
255 __le32 phy_addr;
256
257 addr = addr >> PAGE_2_EXP_SIZE;
258 phy_addr = cpu_to_le32(addr);
259 paging_cmd.device_phy_addr[blk_idx] = phy_addr;
260 }
261
262 return iwl_trans_send_cmd(fwrt->trans, &hcmd);
263}
264
265int iwl_init_paging(struct iwl_fw_runtime *fwrt, enum iwl_ucode_type type)
266{
267 const struct fw_img *fw = &fwrt->fw->img[type];
268 int ret;
269
270 if (fwrt->trans->trans_cfg->gen2)
271 return 0;
272
273 /*
274 * Configure and operate fw paging mechanism.
275 * The driver configures the paging flow only once.
276 * The CPU2 paging image is included in the IWL_UCODE_INIT image.
277 */
278 if (!fw->paging_mem_size)
279 return 0;
280
281 ret = iwl_save_fw_paging(fwrt, fw);
282 if (ret) {
283 IWL_ERR(fwrt, "failed to save the FW paging image\n");
284 return ret;
285 }
286
287 ret = iwl_send_paging_cmd(fwrt, fw);
288 if (ret) {
289 IWL_ERR(fwrt, "failed to send the paging cmd\n");
290 iwl_free_fw_paging(fwrt);
291 return ret;
292 }
293
294 return 0;
295}
296IWL_EXPORT_SYMBOL(iwl_init_paging);
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 - 2019 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 - 2019 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
68void iwl_free_fw_paging(struct iwl_fw_runtime *fwrt)
69{
70 int i;
71
72 if (!fwrt->fw_paging_db[0].fw_paging_block)
73 return;
74
75 for (i = 0; i < NUM_OF_FW_PAGING_BLOCKS; i++) {
76 struct iwl_fw_paging *paging = &fwrt->fw_paging_db[i];
77
78 if (!paging->fw_paging_block) {
79 IWL_DEBUG_FW(fwrt,
80 "Paging: block %d already freed, continue to next page\n",
81 i);
82
83 continue;
84 }
85 dma_unmap_page(fwrt->trans->dev, paging->fw_paging_phys,
86 paging->fw_paging_size, DMA_BIDIRECTIONAL);
87
88 __free_pages(paging->fw_paging_block,
89 get_order(paging->fw_paging_size));
90 paging->fw_paging_block = NULL;
91 }
92
93 memset(fwrt->fw_paging_db, 0, sizeof(fwrt->fw_paging_db));
94}
95IWL_EXPORT_SYMBOL(iwl_free_fw_paging);
96
97static int iwl_alloc_fw_paging_mem(struct iwl_fw_runtime *fwrt,
98 const struct fw_img *image)
99{
100 struct page *block;
101 dma_addr_t phys = 0;
102 int blk_idx, order, num_of_pages, size;
103
104 if (fwrt->fw_paging_db[0].fw_paging_block)
105 return 0;
106
107 /* ensure BLOCK_2_EXP_SIZE is power of 2 of PAGING_BLOCK_SIZE */
108 BUILD_BUG_ON(BIT(BLOCK_2_EXP_SIZE) != PAGING_BLOCK_SIZE);
109
110 num_of_pages = image->paging_mem_size / FW_PAGING_SIZE;
111 fwrt->num_of_paging_blk =
112 DIV_ROUND_UP(num_of_pages, NUM_OF_PAGE_PER_GROUP);
113 fwrt->num_of_pages_in_last_blk =
114 num_of_pages -
115 NUM_OF_PAGE_PER_GROUP * (fwrt->num_of_paging_blk - 1);
116
117 IWL_DEBUG_FW(fwrt,
118 "Paging: allocating mem for %d paging blocks, each block holds 8 pages, last block holds %d pages\n",
119 fwrt->num_of_paging_blk,
120 fwrt->num_of_pages_in_last_blk);
121
122 /*
123 * Allocate CSS and paging blocks in dram.
124 */
125 for (blk_idx = 0; blk_idx < fwrt->num_of_paging_blk + 1; blk_idx++) {
126 /* For CSS allocate 4KB, for others PAGING_BLOCK_SIZE (32K) */
127 size = blk_idx ? PAGING_BLOCK_SIZE : FW_PAGING_SIZE;
128 order = get_order(size);
129 block = alloc_pages(GFP_KERNEL, order);
130 if (!block) {
131 /* free all the previous pages since we failed */
132 iwl_free_fw_paging(fwrt);
133 return -ENOMEM;
134 }
135
136 fwrt->fw_paging_db[blk_idx].fw_paging_block = block;
137 fwrt->fw_paging_db[blk_idx].fw_paging_size = size;
138
139 phys = dma_map_page(fwrt->trans->dev, block, 0,
140 PAGE_SIZE << order,
141 DMA_BIDIRECTIONAL);
142 if (dma_mapping_error(fwrt->trans->dev, phys)) {
143 /*
144 * free the previous pages and the current one
145 * since we failed to map_page.
146 */
147 iwl_free_fw_paging(fwrt);
148 return -ENOMEM;
149 }
150 fwrt->fw_paging_db[blk_idx].fw_paging_phys = phys;
151
152 if (!blk_idx)
153 IWL_DEBUG_FW(fwrt,
154 "Paging: allocated 4K(CSS) bytes (order %d) for firmware paging.\n",
155 order);
156 else
157 IWL_DEBUG_FW(fwrt,
158 "Paging: allocated 32K bytes (order %d) for firmware paging.\n",
159 order);
160 }
161
162 return 0;
163}
164
165static int iwl_fill_paging_mem(struct iwl_fw_runtime *fwrt,
166 const struct fw_img *image)
167{
168 int sec_idx, idx, ret;
169 u32 offset = 0;
170
171 /*
172 * find where is the paging image start point:
173 * if CPU2 exist and it's in paging format, then the image looks like:
174 * CPU1 sections (2 or more)
175 * CPU1_CPU2_SEPARATOR_SECTION delimiter - separate between CPU1 to CPU2
176 * CPU2 sections (not paged)
177 * PAGING_SEPARATOR_SECTION delimiter - separate between CPU2
178 * non paged to CPU2 paging sec
179 * CPU2 paging CSS
180 * CPU2 paging image (including instruction and data)
181 */
182 for (sec_idx = 0; sec_idx < image->num_sec; sec_idx++) {
183 if (image->sec[sec_idx].offset == PAGING_SEPARATOR_SECTION) {
184 sec_idx++;
185 break;
186 }
187 }
188
189 /*
190 * If paging is enabled there should be at least 2 more sections left
191 * (one for CSS and one for Paging data)
192 */
193 if (sec_idx >= image->num_sec - 1) {
194 IWL_ERR(fwrt, "Paging: Missing CSS and/or paging sections\n");
195 ret = -EINVAL;
196 goto err;
197 }
198
199 /* copy the CSS block to the dram */
200 IWL_DEBUG_FW(fwrt, "Paging: load paging CSS to FW, sec = %d\n",
201 sec_idx);
202
203 if (image->sec[sec_idx].len > fwrt->fw_paging_db[0].fw_paging_size) {
204 IWL_ERR(fwrt, "CSS block is larger than paging size\n");
205 ret = -EINVAL;
206 goto err;
207 }
208
209 memcpy(page_address(fwrt->fw_paging_db[0].fw_paging_block),
210 image->sec[sec_idx].data,
211 image->sec[sec_idx].len);
212 dma_sync_single_for_device(fwrt->trans->dev,
213 fwrt->fw_paging_db[0].fw_paging_phys,
214 fwrt->fw_paging_db[0].fw_paging_size,
215 DMA_BIDIRECTIONAL);
216
217 IWL_DEBUG_FW(fwrt,
218 "Paging: copied %d CSS bytes to first block\n",
219 fwrt->fw_paging_db[0].fw_paging_size);
220
221 sec_idx++;
222
223 /*
224 * Copy the paging blocks to the dram. The loop index starts
225 * from 1 since the CSS block (index 0) was already copied to
226 * dram. We use num_of_paging_blk + 1 to account for that.
227 */
228 for (idx = 1; idx < fwrt->num_of_paging_blk + 1; idx++) {
229 struct iwl_fw_paging *block = &fwrt->fw_paging_db[idx];
230 int remaining = image->sec[sec_idx].len - offset;
231 int len = block->fw_paging_size;
232
233 /*
234 * For the last block, we copy all that is remaining,
235 * for all other blocks, we copy fw_paging_size at a
236 * time. */
237 if (idx == fwrt->num_of_paging_blk) {
238 len = remaining;
239 if (remaining !=
240 fwrt->num_of_pages_in_last_blk * FW_PAGING_SIZE) {
241 IWL_ERR(fwrt,
242 "Paging: last block contains more data than expected %d\n",
243 remaining);
244 ret = -EINVAL;
245 goto err;
246 }
247 } else if (block->fw_paging_size > remaining) {
248 IWL_ERR(fwrt,
249 "Paging: not enough data in other in block %d (%d)\n",
250 idx, remaining);
251 ret = -EINVAL;
252 goto err;
253 }
254
255 memcpy(page_address(block->fw_paging_block),
256 image->sec[sec_idx].data + offset, len);
257 dma_sync_single_for_device(fwrt->trans->dev,
258 block->fw_paging_phys,
259 block->fw_paging_size,
260 DMA_BIDIRECTIONAL);
261
262 IWL_DEBUG_FW(fwrt,
263 "Paging: copied %d paging bytes to block %d\n",
264 len, idx);
265
266 offset += block->fw_paging_size;
267 }
268
269 return 0;
270
271err:
272 iwl_free_fw_paging(fwrt);
273 return ret;
274}
275
276static int iwl_save_fw_paging(struct iwl_fw_runtime *fwrt,
277 const struct fw_img *fw)
278{
279 int ret;
280
281 ret = iwl_alloc_fw_paging_mem(fwrt, fw);
282 if (ret)
283 return ret;
284
285 return iwl_fill_paging_mem(fwrt, fw);
286}
287
288/* send paging cmd to FW in case CPU2 has paging image */
289static int iwl_send_paging_cmd(struct iwl_fw_runtime *fwrt,
290 const struct fw_img *fw)
291{
292 struct iwl_fw_paging_cmd paging_cmd = {
293 .flags = cpu_to_le32(PAGING_CMD_IS_SECURED |
294 PAGING_CMD_IS_ENABLED |
295 (fwrt->num_of_pages_in_last_blk <<
296 PAGING_CMD_NUM_OF_PAGES_IN_LAST_GRP_POS)),
297 .block_size = cpu_to_le32(BLOCK_2_EXP_SIZE),
298 .block_num = cpu_to_le32(fwrt->num_of_paging_blk),
299 };
300 struct iwl_host_cmd hcmd = {
301 .id = iwl_cmd_id(FW_PAGING_BLOCK_CMD, IWL_ALWAYS_LONG_GROUP, 0),
302 .len = { sizeof(paging_cmd), },
303 .data = { &paging_cmd, },
304 };
305 int blk_idx;
306
307 /* loop for for all paging blocks + CSS block */
308 for (blk_idx = 0; blk_idx < fwrt->num_of_paging_blk + 1; blk_idx++) {
309 dma_addr_t addr = fwrt->fw_paging_db[blk_idx].fw_paging_phys;
310 __le32 phy_addr;
311
312 addr = addr >> PAGE_2_EXP_SIZE;
313 phy_addr = cpu_to_le32(addr);
314 paging_cmd.device_phy_addr[blk_idx] = phy_addr;
315 }
316
317 return iwl_trans_send_cmd(fwrt->trans, &hcmd);
318}
319
320int iwl_init_paging(struct iwl_fw_runtime *fwrt, enum iwl_ucode_type type)
321{
322 const struct fw_img *fw = &fwrt->fw->img[type];
323 int ret;
324
325 if (fwrt->trans->trans_cfg->gen2)
326 return 0;
327
328 /*
329 * Configure and operate fw paging mechanism.
330 * The driver configures the paging flow only once.
331 * The CPU2 paging image is included in the IWL_UCODE_INIT image.
332 */
333 if (!fw->paging_mem_size)
334 return 0;
335
336 ret = iwl_save_fw_paging(fwrt, fw);
337 if (ret) {
338 IWL_ERR(fwrt, "failed to save the FW paging image\n");
339 return ret;
340 }
341
342 ret = iwl_send_paging_cmd(fwrt, fw);
343 if (ret) {
344 IWL_ERR(fwrt, "failed to send the paging cmd\n");
345 iwl_free_fw_paging(fwrt);
346 return ret;
347 }
348
349 return 0;
350}
351IWL_EXPORT_SYMBOL(iwl_init_paging);