summaryrefslogtreecommitdiffstats
path: root/sound/soc/sof/loader.c
blob: 81d202e5ce53de3eec2943ee7bd453452b6f27c6 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
//
// This file is provided under a dual BSD/GPLv2 license.  When using or
// redistributing this file, you may do so under either license.
//
// Copyright(c) 2018 Intel Corporation. All rights reserved.
//
// Author: Liam Girdwood <liam.r.girdwood@linux.intel.com>
//
// Generic firmware loader.
//

#include <linux/firmware.h>
#include "sof-priv.h"
#include "ops.h"

int snd_sof_load_firmware_raw(struct snd_sof_dev *sdev)
{
	struct snd_sof_pdata *plat_data = sdev->pdata;
	const char *fw_filename;
	ssize_t ext_man_size;
	int ret;

	/* Don't request firmware again if firmware is already requested */
	if (sdev->basefw.fw)
		return 0;

	fw_filename = kasprintf(GFP_KERNEL, "%s/%s",
				plat_data->fw_filename_prefix,
				plat_data->fw_filename);
	if (!fw_filename)
		return -ENOMEM;

	ret = request_firmware(&sdev->basefw.fw, fw_filename, sdev->dev);

	if (ret < 0) {
		dev_err(sdev->dev,
			"error: sof firmware file is missing, you might need to\n");
		dev_err(sdev->dev,
			"       download it from https://github.com/thesofproject/sof-bin/\n");
		goto err;
	} else {
		dev_dbg(sdev->dev, "request_firmware %s successful\n",
			fw_filename);
	}

	/* check for extended manifest */
	ext_man_size = sdev->ipc->ops->fw_loader->parse_ext_manifest(sdev);
	if (ext_man_size > 0) {
		/* when no error occurred, drop extended manifest */
		sdev->basefw.payload_offset = ext_man_size;
	} else if (!ext_man_size) {
		/* No extended manifest, so nothing to skip during FW load */
		dev_dbg(sdev->dev, "firmware doesn't contain extended manifest\n");
	} else {
		ret = ext_man_size;
		dev_err(sdev->dev, "error: firmware %s contains unsupported or invalid extended manifest: %d\n",
			fw_filename, ret);
	}

err:
	kfree(fw_filename);

	return ret;
}
EXPORT_SYMBOL(snd_sof_load_firmware_raw);

int snd_sof_load_firmware_memcpy(struct snd_sof_dev *sdev)
{
	int ret;

	ret = snd_sof_load_firmware_raw(sdev);
	if (ret < 0)
		return ret;

	/* make sure the FW header and file is valid */
	ret = sdev->ipc->ops->fw_loader->validate(sdev);
	if (ret < 0) {
		dev_err(sdev->dev, "error: invalid FW header\n");
		goto error;
	}

	/* prepare the DSP for FW loading */
	ret = snd_sof_dsp_reset(sdev);
	if (ret < 0) {
		dev_err(sdev->dev, "error: failed to reset DSP\n");
		goto error;
	}

	/* parse and load firmware modules to DSP */
	if (sdev->ipc->ops->fw_loader->load_fw_to_dsp) {
		ret = sdev->ipc->ops->fw_loader->load_fw_to_dsp(sdev);
		if (ret < 0) {
			dev_err(sdev->dev, "Firmware loading failed\n");
			goto error;
		}
	}

	return 0;

error:
	release_firmware(sdev->basefw.fw);
	sdev->basefw.fw = NULL;
	return ret;

}
EXPORT_SYMBOL(snd_sof_load_firmware_memcpy);

int snd_sof_run_firmware(struct snd_sof_dev *sdev)
{
	int ret;

	init_waitqueue_head(&sdev->boot_wait);

	/* (re-)enable dsp dump */
	sdev->dbg_dump_printed = false;
	sdev->ipc_dump_printed = false;

	/* create read-only fw_version debugfs to store boot version info */
	if (sdev->first_boot) {
		ret = snd_sof_debugfs_buf_item(sdev, &sdev->fw_version,
					       sizeof(sdev->fw_version),
					       "fw_version", 0444);
		/* errors are only due to memory allocation, not debugfs */
		if (ret < 0) {
			dev_err(sdev->dev, "error: snd_sof_debugfs_buf_item failed\n");
			return ret;
		}
	}

	/* perform pre fw run operations */
	ret = snd_sof_dsp_pre_fw_run(sdev);
	if (ret < 0) {
		dev_err(sdev->dev, "error: failed pre fw run op\n");
		return ret;
	}

	dev_dbg(sdev->dev, "booting DSP firmware\n");

	/* boot the firmware on the DSP */
	ret = snd_sof_dsp_run(sdev);
	if (ret < 0) {
		snd_sof_dsp_dbg_dump(sdev, "Failed to start DSP",
				     SOF_DBG_DUMP_MBOX | SOF_DBG_DUMP_PCI);
		return ret;
	}

	/*
	 * now wait for the DSP to boot. There are 3 possible outcomes:
	 * 1. Boot wait times out indicating FW boot failure.
	 * 2. FW boots successfully and fw_ready op succeeds.
	 * 3. FW boots but fw_ready op fails.
	 */
	ret = wait_event_timeout(sdev->boot_wait,
				 sdev->fw_state > SOF_FW_BOOT_IN_PROGRESS,
				 msecs_to_jiffies(sdev->boot_timeout));
	if (ret == 0) {
		snd_sof_dsp_dbg_dump(sdev, "Firmware boot failure due to timeout",
				     SOF_DBG_DUMP_REGS | SOF_DBG_DUMP_MBOX |
				     SOF_DBG_DUMP_TEXT | SOF_DBG_DUMP_PCI);
		return -EIO;
	}

	if (sdev->fw_state == SOF_FW_BOOT_READY_FAILED)
		return -EIO; /* FW boots but fw_ready op failed */

	dev_dbg(sdev->dev, "firmware boot complete\n");
	sof_set_fw_state(sdev, SOF_FW_BOOT_COMPLETE);

	/* perform post fw run operations */
	ret = snd_sof_dsp_post_fw_run(sdev);
	if (ret < 0) {
		dev_err(sdev->dev, "error: failed post fw run op\n");
		return ret;
	}

	if (sdev->ipc->ops->post_fw_boot)
		return sdev->ipc->ops->post_fw_boot(sdev);

	return 0;
}
EXPORT_SYMBOL(snd_sof_run_firmware);

void snd_sof_fw_unload(struct snd_sof_dev *sdev)
{
	/* TODO: support module unloading at runtime */
	release_firmware(sdev->basefw.fw);
	sdev->basefw.fw = NULL;
}
EXPORT_SYMBOL(snd_sof_fw_unload);