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 Advanced Micro Devices, Inc.
7 //
8 // Authors: Ajit Kumar Pandey <AjitKumar.Pandey@amd.com>
9 // V sujith kumar Reddy <Vsujithkumar.Reddy@amd.com>
10
11 /* ACP-specific Common code */
12
13 #include "../sof-priv.h"
14 #include "../sof-audio.h"
15 #include "../ops.h"
16 #include "acp.h"
17 #include "acp-dsp-offset.h"
18 #include <sound/sof/xtensa.h>
19
20 /**
21 * amd_sof_ipc_dump() - This function is called when IPC tx times out.
22 * @sdev: SOF device.
23 */
24 void amd_sof_ipc_dump(struct snd_sof_dev *sdev)
25 {
26 const struct sof_amd_acp_desc *desc = get_chip_info(sdev->pdata);
27 u32 base = desc->dsp_intr_base;
28 u32 dsp_msg_write = sdev->debug_box.offset +
29 offsetof(struct scratch_ipc_conf, sof_dsp_msg_write);
30 u32 dsp_ack_write = sdev->debug_box.offset +
31 offsetof(struct scratch_ipc_conf, sof_dsp_ack_write);
32 u32 host_msg_write = sdev->debug_box.offset +
33 offsetof(struct scratch_ipc_conf, sof_host_msg_write);
34 u32 host_ack_write = sdev->debug_box.offset +
35 offsetof(struct scratch_ipc_conf, sof_host_ack_write);
36 u32 dsp_msg, dsp_ack, host_msg, host_ack, irq_stat;
37
38 dsp_msg = snd_sof_dsp_read(sdev, ACP_DSP_BAR, ACP_SCRATCH_REG_0 + dsp_msg_write);
39 dsp_ack = snd_sof_dsp_read(sdev, ACP_DSP_BAR, ACP_SCRATCH_REG_0 + dsp_ack_write);
40 host_msg = snd_sof_dsp_read(sdev, ACP_DSP_BAR, ACP_SCRATCH_REG_0 + host_msg_write);
41 host_ack = snd_sof_dsp_read(sdev, ACP_DSP_BAR, ACP_SCRATCH_REG_0 + host_ack_write);
42 irq_stat = snd_sof_dsp_read(sdev, ACP_DSP_BAR, base + DSP_SW_INTR_STAT_OFFSET);
43
44 dev_err(sdev->dev,
45 "dsp_msg = %#x dsp_ack = %#x host_msg = %#x host_ack = %#x irq_stat = %#x\n",
46 dsp_msg, dsp_ack, host_msg, host_ack, irq_stat);
47 }
48
49 /**
50 * amd_get_registers() - This function is called in case of DSP oops
51 * in order to gather information about the registers, filename and
52 * linenumber and stack.
53 * @sdev: SOF device.
54 * @xoops: Stores information about registers.
55 * @panic_info: Stores information about filename and line number.
56 * @stack: Stores the stack dump.
57 * @stack_words: Size of the stack dump.
58 */
59 static void amd_get_registers(struct snd_sof_dev *sdev,
60 struct sof_ipc_dsp_oops_xtensa *xoops,
61 struct sof_ipc_panic_info *panic_info,
62 u32 *stack, size_t stack_words)
63 {
64 u32 offset = sdev->dsp_oops_offset;
65
66 /* first read registers */
67 acp_mailbox_read(sdev, offset, xoops, sizeof(*xoops));
68
69 /* then get panic info */
70 if (xoops->arch_hdr.totalsize > EXCEPT_MAX_HDR_SIZE) {
71 dev_err(sdev->dev, "invalid header size 0x%x. FW oops is bogus\n",
72 xoops->arch_hdr.totalsize);
73 return;
74 }
75
76 offset += xoops->arch_hdr.totalsize;
77 acp_mailbox_read(sdev, offset, panic_info, sizeof(*panic_info));
78
79 /* then get the stack */
80 offset += sizeof(*panic_info);
81 acp_mailbox_read(sdev, offset, stack, stack_words * sizeof(u32));
82 }
83
84 /**
85 * amd_sof_dump() - This function is called when a panic message is
86 * received from the firmware.
87 * @sdev: SOF device.
88 * @flags: parameter not used but required by ops prototype
89 */
90 void amd_sof_dump(struct snd_sof_dev *sdev, u32 flags)
91 {
92 struct sof_ipc_dsp_oops_xtensa xoops;
93 struct sof_ipc_panic_info panic_info;
94 u32 stack[AMD_STACK_DUMP_SIZE];
95 u32 status;
96
97 /* Get information about the panic status from the debug box area.
98 * Compute the trace point based on the status.
99 */
100 if (sdev->dsp_oops_offset > sdev->debug_box.offset) {
101 acp_mailbox_read(sdev, sdev->debug_box.offset, &status, sizeof(u32));
102 } else {
103 /* Read DSP Panic status from dsp_box.
104 * As window information for exception box offset and size is not available
105 * before FW_READY
106 */
107 acp_mailbox_read(sdev, sdev->dsp_box.offset, &status, sizeof(u32));
108 sdev->dsp_oops_offset = sdev->dsp_box.offset + sizeof(status);
109 }
110
111 /* Get information about the registers, the filename and line
112 * number and the stack.
113 */
114 amd_get_registers(sdev, &xoops, &panic_info, stack, AMD_STACK_DUMP_SIZE);
115
116 /* Print the information to the console */
117 sof_print_oops_and_stack(sdev, KERN_ERR, status, status, &xoops,
118 &panic_info, stack, AMD_STACK_DUMP_SIZE);
119 }
120
121 #if IS_ENABLED(CONFIG_SND_SOC_SOF_AMD_SOUNDWIRE)
122 static int amd_sof_sdw_get_slave_info(struct snd_sof_dev *sdev)
123 {
124 struct acp_dev_data *acp_data = sdev->pdata->hw_pdata;
125
126 return sdw_amd_get_slave_info(acp_data->sdw);
127 }
128
129 static struct snd_soc_acpi_mach *amd_sof_sdw_machine_select(struct snd_sof_dev *sdev)
130 {
131 struct snd_soc_acpi_mach *mach;
132 const struct snd_soc_acpi_link_adr *link;
133 struct acp_dev_data *acp_data = sdev->pdata->hw_pdata;
134 int ret, i;
135
136 if (acp_data->info.count) {
137 ret = amd_sof_sdw_get_slave_info(sdev);
138 if (ret) {
139 dev_info(sdev->dev, "failed to read slave information\n");
140 return NULL;
141 }
142 for (mach = sdev->pdata->desc->alt_machines; mach; mach++) {
143 if (!mach->links)
144 break;
145 link = mach->links;
146 for (i = 0; i < acp_data->info.count && link->num_adr; link++, i++) {
147 if (!snd_soc_acpi_sdw_link_slaves_found(sdev->dev, link,
148 acp_data->sdw->ids,
149 acp_data->sdw->num_slaves))
150 break;
151 }
152 if (i == acp_data->info.count || !link->num_adr)
153 break;
154 }
155 if (mach && mach->link_mask) {
156 mach->mach_params.links = mach->links;
157 mach->mach_params.link_mask = mach->link_mask;
158 mach->mach_params.platform = dev_name(sdev->dev);
159 return mach;
160 }
161 }
162 dev_info(sdev->dev, "No SoundWire machine driver found\n");
163 return NULL;
164 }
165
166 #else
167 static struct snd_soc_acpi_mach *amd_sof_sdw_machine_select(struct snd_sof_dev *sdev)
168 {
169 return NULL;
170 }
171 #endif
172
173 struct snd_soc_acpi_mach *amd_sof_machine_select(struct snd_sof_dev *sdev)
174 {
175 struct snd_sof_pdata *sof_pdata = sdev->pdata;
176 const struct sof_dev_desc *desc = sof_pdata->desc;
177 struct snd_soc_acpi_mach *mach = NULL;
178
179 if (desc->machines)
180 mach = snd_soc_acpi_find_machine(desc->machines);
181 if (!mach) {
182 mach = amd_sof_sdw_machine_select(sdev);
183 if (!mach) {
184 dev_warn(sdev->dev, "No matching ASoC machine driver found\n");
185 return NULL;
186 }
187 }
188
189 sof_pdata->tplg_filename = mach->sof_tplg_filename;
190 sof_pdata->fw_filename = mach->fw_filename;
191
192 return mach;
193 }
194
195 /* AMD Common DSP ops */
196 const struct snd_sof_dsp_ops sof_acp_common_ops = {
197 /* probe and remove */
198 .probe = amd_sof_acp_probe,
199 .remove = amd_sof_acp_remove,
200
201 /* Register IO */
202 .write = sof_io_write,
203 .read = sof_io_read,
204
205 /* Block IO */
206 .block_read = acp_dsp_block_read,
207 .block_write = acp_dsp_block_write,
208
209 /*Firmware loading */
210 .load_firmware = snd_sof_load_firmware_memcpy,
211 .pre_fw_run = acp_dsp_pre_fw_run,
212 .get_bar_index = acp_get_bar_index,
213
214 /* DSP core boot */
215 .run = acp_sof_dsp_run,
216
217 /*IPC */
218 .send_msg = acp_sof_ipc_send_msg,
219 .ipc_msg_data = acp_sof_ipc_msg_data,
220 .set_stream_data_offset = acp_set_stream_data_offset,
221 .get_mailbox_offset = acp_sof_ipc_get_mailbox_offset,
222 .get_window_offset = acp_sof_ipc_get_window_offset,
223 .irq_thread = acp_sof_ipc_irq_thread,
224
225 /* stream callbacks */
226 .pcm_open = acp_pcm_open,
227 .pcm_close = acp_pcm_close,
228 .pcm_hw_params = acp_pcm_hw_params,
229 .pcm_pointer = acp_pcm_pointer,
230
231 .hw_info = SNDRV_PCM_INFO_MMAP |
232 SNDRV_PCM_INFO_MMAP_VALID |
233 SNDRV_PCM_INFO_INTERLEAVED |
234 SNDRV_PCM_INFO_PAUSE |
235 SNDRV_PCM_INFO_NO_PERIOD_WAKEUP,
236
237 /* Machine driver callbacks */
238 .machine_select = amd_sof_machine_select,
239 .machine_register = sof_machine_register,
240 .machine_unregister = sof_machine_unregister,
241
242 /* Trace Logger */
243 .trace_init = acp_sof_trace_init,
244 .trace_release = acp_sof_trace_release,
245
246 /* PM */
247 .suspend = amd_sof_acp_suspend,
248 .resume = amd_sof_acp_resume,
249
250 .ipc_dump = amd_sof_ipc_dump,
251 .dbg_dump = amd_sof_dump,
252 .debugfs_add_region_item = snd_sof_debugfs_add_region_item_iomem,
253 .dsp_arch_ops = &sof_xtensa_arch_ops,
254
255 /* probe client device registation */
256 .register_ipc_clients = acp_probes_register,
257 .unregister_ipc_clients = acp_probes_unregister,
258 };
259 EXPORT_SYMBOL_NS(sof_acp_common_ops, SND_SOC_SOF_AMD_COMMON);
260
261 MODULE_LICENSE("Dual BSD/GPL");
262 MODULE_DESCRIPTION("ACP SOF COMMON Driver");
263 MODULE_IMPORT_NS(SND_SOC_SOF_AMD_COMMON);
264 MODULE_IMPORT_NS(SND_SOC_SOF_XTENSA);
265 MODULE_IMPORT_NS(SOUNDWIRE_AMD_INIT);
266
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