1 // SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
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 // Copyright(c) 2022 MediaTek Inc. All rights reserved.
7 //
8 // Author: YC Hung <yc.hung@mediatek.com>
9
10 /*
11 * Common helpers for the audio DSP on MediaTek platforms
12 */
13
14 #include <linux/module.h>
15 #include <sound/asound.h>
16 #include <sound/sof/xtensa.h>
17 #include "../ops.h"
18 #include "../sof-audio.h"
19 #include "adsp_helper.h"
20 #include "mtk-adsp-common.h"
21
22 /**
23 * mtk_adsp_get_registers() - This function is called in case of DSP oops
24 * in order to gather information about the registers, filename and
25 * linenumber and stack.
26 * @sdev: SOF device
27 * @xoops: Stores information about registers.
28 * @panic_info: Stores information about filename and line number.
29 * @stack: Stores the stack dump.
30 * @stack_words: Size of the stack dump.
31 */
mtk_adsp_get_registers(struct snd_sof_dev * sdev,struct sof_ipc_dsp_oops_xtensa * xoops,struct sof_ipc_panic_info * panic_info,u32 * stack,size_t stack_words)32 static void mtk_adsp_get_registers(struct snd_sof_dev *sdev,
33 struct sof_ipc_dsp_oops_xtensa *xoops,
34 struct sof_ipc_panic_info *panic_info,
35 u32 *stack, size_t stack_words)
36 {
37 u32 offset = sdev->dsp_oops_offset;
38
39 /* first read registers */
40 sof_mailbox_read(sdev, offset, xoops, sizeof(*xoops));
41
42 /* then get panic info */
43 if (xoops->arch_hdr.totalsize > EXCEPT_MAX_HDR_SIZE) {
44 dev_err(sdev->dev, "invalid header size 0x%x\n",
45 xoops->arch_hdr.totalsize);
46 return;
47 }
48 offset += xoops->arch_hdr.totalsize;
49 sof_mailbox_read(sdev, offset, panic_info, sizeof(*panic_info));
50
51 /* then get the stack */
52 offset += sizeof(*panic_info);
53 sof_mailbox_read(sdev, offset, stack, stack_words * sizeof(u32));
54 }
55
56 /**
57 * mtk_adsp_dump() - This function is called when a panic message is
58 * received from the firmware.
59 * @sdev: SOF device
60 * @flags: parameter not used but required by ops prototype
61 */
mtk_adsp_dump(struct snd_sof_dev * sdev,u32 flags)62 void mtk_adsp_dump(struct snd_sof_dev *sdev, u32 flags)
63 {
64 char *level = (flags & SOF_DBG_DUMP_OPTIONAL) ? KERN_DEBUG : KERN_ERR;
65 struct sof_ipc_dsp_oops_xtensa xoops;
66 struct sof_ipc_panic_info panic_info = {};
67 u32 stack[MTK_ADSP_STACK_DUMP_SIZE];
68 u32 status;
69
70 /* Get information about the panic status from the debug box area.
71 * Compute the trace point based on the status.
72 */
73 sof_mailbox_read(sdev, sdev->debug_box.offset + 0x4, &status, 4);
74
75 /* Get information about the registers, the filename and line
76 * number and the stack.
77 */
78 mtk_adsp_get_registers(sdev, &xoops, &panic_info, stack,
79 MTK_ADSP_STACK_DUMP_SIZE);
80
81 /* Print the information to the console */
82 sof_print_oops_and_stack(sdev, level, status, status, &xoops, &panic_info,
83 stack, MTK_ADSP_STACK_DUMP_SIZE);
84 }
85 EXPORT_SYMBOL(mtk_adsp_dump);
86
87 /**
88 * mtk_adsp_send_msg - Send message to Audio DSP
89 * @sdev: SOF device
90 * @msg: SOF IPC Message to send
91 */
mtk_adsp_send_msg(struct snd_sof_dev * sdev,struct snd_sof_ipc_msg * msg)92 int mtk_adsp_send_msg(struct snd_sof_dev *sdev, struct snd_sof_ipc_msg *msg)
93 {
94 struct adsp_priv *priv = sdev->pdata->hw_pdata;
95
96 sof_mailbox_write(sdev, sdev->host_box.offset, msg->msg_data,
97 msg->msg_size);
98
99 return mtk_adsp_ipc_send(priv->dsp_ipc, MTK_ADSP_IPC_REQ, MTK_ADSP_IPC_OP_REQ);
100 }
101 EXPORT_SYMBOL(mtk_adsp_send_msg);
102
103 /**
104 * mtk_adsp_handle_reply - Handle reply from the Audio DSP through Mailbox
105 * @ipc: ADSP IPC handle
106 */
mtk_adsp_handle_reply(struct mtk_adsp_ipc * ipc)107 void mtk_adsp_handle_reply(struct mtk_adsp_ipc *ipc)
108 {
109 struct adsp_priv *priv = mtk_adsp_ipc_get_data(ipc);
110 unsigned long flags;
111
112 spin_lock_irqsave(&priv->sdev->ipc_lock, flags);
113 snd_sof_ipc_process_reply(priv->sdev, 0);
114 spin_unlock_irqrestore(&priv->sdev->ipc_lock, flags);
115 }
116 EXPORT_SYMBOL(mtk_adsp_handle_reply);
117
118 /**
119 * mtk_adsp_handle_request - Handle request from the Audio DSP through Mailbox
120 * @ipc: ADSP IPC handle
121 */
mtk_adsp_handle_request(struct mtk_adsp_ipc * ipc)122 void mtk_adsp_handle_request(struct mtk_adsp_ipc *ipc)
123 {
124 struct adsp_priv *priv = mtk_adsp_ipc_get_data(ipc);
125 u32 panic_code;
126 int ret;
127
128 /* Read the message from the debug box. */
129 sof_mailbox_read(priv->sdev, priv->sdev->debug_box.offset + 4,
130 &panic_code, sizeof(panic_code));
131
132 /* Check to see if the message is a panic code 0x0dead*** */
133 if ((panic_code & SOF_IPC_PANIC_MAGIC_MASK) == SOF_IPC_PANIC_MAGIC) {
134 snd_sof_dsp_panic(priv->sdev, panic_code, true);
135 } else {
136 snd_sof_ipc_msgs_rx(priv->sdev);
137
138 /* Tell DSP cmd is done */
139 ret = mtk_adsp_ipc_send(priv->dsp_ipc, MTK_ADSP_IPC_RSP, MTK_ADSP_IPC_OP_RSP);
140 if (ret)
141 dev_err(priv->dev, "request send ipc failed");
142 }
143 }
144 EXPORT_SYMBOL(mtk_adsp_handle_request);
145
146 /**
147 * mtk_adsp_get_bar_index - Map section type with BAR idx
148 * @sdev: SOF device
149 * @type: Section type as described by snd_sof_fw_blk_type
150 *
151 * MediaTek Audio DSPs have a 1:1 match between type and BAR idx
152 */
mtk_adsp_get_bar_index(struct snd_sof_dev * sdev,u32 type)153 int mtk_adsp_get_bar_index(struct snd_sof_dev *sdev, u32 type)
154 {
155 return type;
156 }
157 EXPORT_SYMBOL(mtk_adsp_get_bar_index);
158
159 /**
160 * mtk_adsp_stream_pcm_hw_params - Platform specific host stream hw params
161 * @sdev: SOF device
162 * @substream: PCM Substream
163 * @params: hw params
164 * @platform_params: Platform specific SOF stream parameters
165 */
mtk_adsp_stream_pcm_hw_params(struct snd_sof_dev * sdev,struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params,struct snd_sof_platform_stream_params * platform_params)166 int mtk_adsp_stream_pcm_hw_params(struct snd_sof_dev *sdev,
167 struct snd_pcm_substream *substream,
168 struct snd_pcm_hw_params *params,
169 struct snd_sof_platform_stream_params *platform_params)
170 {
171 platform_params->cont_update_posn = 1;
172 return 0;
173 }
174 EXPORT_SYMBOL(mtk_adsp_stream_pcm_hw_params);
175
176 /**
177 * mtk_adsp_stream_pcm_pointer - Get host stream pointer
178 * @sdev: SOF device
179 * @substream: PCM substream
180 */
mtk_adsp_stream_pcm_pointer(struct snd_sof_dev * sdev,struct snd_pcm_substream * substream)181 snd_pcm_uframes_t mtk_adsp_stream_pcm_pointer(struct snd_sof_dev *sdev,
182 struct snd_pcm_substream *substream)
183 {
184 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
185 struct snd_soc_component *scomp = sdev->component;
186 struct snd_sof_pcm_stream *stream;
187 struct sof_ipc_stream_posn posn;
188 struct snd_sof_pcm *spcm;
189 snd_pcm_uframes_t pos;
190 int ret;
191
192 spcm = snd_sof_find_spcm_dai(scomp, rtd);
193 if (!spcm) {
194 dev_warn_ratelimited(sdev->dev, "warn: can't find PCM with DAI ID %d\n",
195 rtd->dai_link->id);
196 return 0;
197 }
198
199 stream = &spcm->stream[substream->stream];
200 ret = snd_sof_ipc_msg_data(sdev, stream, &posn, sizeof(posn));
201 if (ret < 0) {
202 dev_warn(sdev->dev, "failed to read stream position: %d\n", ret);
203 return 0;
204 }
205
206 memcpy(&stream->posn, &posn, sizeof(posn));
207 pos = spcm->stream[substream->stream].posn.host_posn;
208 pos = bytes_to_frames(substream->runtime, pos);
209
210 return pos;
211 }
212 EXPORT_SYMBOL(mtk_adsp_stream_pcm_pointer);
213
214 MODULE_LICENSE("Dual BSD/GPL");
215 MODULE_DESCRIPTION("SOF helpers for MTK ADSP platforms");
216