1// SPDX-License-Identifier: GPL-2.0-only
2//
3// Copyright(c) 2021-2022 Intel Corporation. All rights reserved.
4//
5// Authors: Cezary Rojewski <cezary.rojewski@intel.com>
6// Amadeusz Slawinski <amadeuszx.slawinski@linux.intel.com>
7//
8
9#include <linux/devcoredump.h>
10#include <linux/slab.h>
11#include <sound/hdaudio_ext.h>
12#include "avs.h"
13#include "messages.h"
14
15irqreturn_t avs_skl_irq_thread(struct avs_dev *adev)
16{
17 union avs_reply_msg msg;
18 u32 hipct, hipcte;
19
20 hipct = snd_hdac_adsp_readl(adev, SKL_ADSP_REG_HIPCT);
21 hipcte = snd_hdac_adsp_readl(adev, SKL_ADSP_REG_HIPCTE);
22
23 /* Ensure DSP sent new response to process. */
24 if (!(hipct & SKL_ADSP_HIPCT_BUSY))
25 return IRQ_NONE;
26
27 msg.primary = hipct;
28 msg.ext.val = hipcte;
29 avs_dsp_process_response(adev, header: msg.val);
30
31 /* Tell DSP we accepted its message. */
32 snd_hdac_adsp_updatel(adev, SKL_ADSP_REG_HIPCT, SKL_ADSP_HIPCT_BUSY, SKL_ADSP_HIPCT_BUSY);
33 /* Unmask busy interrupt. */
34 snd_hdac_adsp_updatel(adev, SKL_ADSP_REG_HIPCCTL, AVS_ADSP_HIPCCTL_BUSY,
35 AVS_ADSP_HIPCCTL_BUSY);
36
37 return IRQ_HANDLED;
38}
39
40static int __maybe_unused
41avs_skl_enable_logs(struct avs_dev *adev, enum avs_log_enable enable, u32 aging_period,
42 u32 fifo_full_period, unsigned long resource_mask, u32 *priorities)
43{
44 struct avs_skl_log_state_info *info;
45 u32 size, num_cores = adev->hw_cfg.dsp_cores;
46 int ret, i;
47
48 if (fls_long(l: resource_mask) > num_cores)
49 return -EINVAL;
50 size = struct_size(info, logs_core, num_cores);
51 info = kzalloc(size, GFP_KERNEL);
52 if (!info)
53 return -ENOMEM;
54
55 info->core_mask = resource_mask;
56 if (enable)
57 for_each_set_bit(i, &resource_mask, num_cores) {
58 info->logs_core[i].enable = enable;
59 info->logs_core[i].min_priority = *priorities++;
60 }
61 else
62 for_each_set_bit(i, &resource_mask, num_cores)
63 info->logs_core[i].enable = enable;
64
65 ret = avs_ipc_set_enable_logs(adev, log_info: (u8 *)info, size);
66 kfree(objp: info);
67 if (ret)
68 return AVS_IPC_RET(ret);
69
70 return 0;
71}
72
73int avs_skl_log_buffer_offset(struct avs_dev *adev, u32 core)
74{
75 return core * avs_log_buffer_size(adev);
76}
77
78/* fw DbgLogWp registers */
79#define FW_REGS_DBG_LOG_WP(core) (0x30 + 0x4 * core)
80
81static int avs_skl_log_buffer_status(struct avs_dev *adev, union avs_notify_msg *msg)
82{
83 void __iomem *buf;
84 u16 size, write, offset;
85
86 if (!avs_logging_fw(adev))
87 return 0;
88
89 size = avs_log_buffer_size(adev) / 2;
90 write = readl(avs_sram_addr(adev, AVS_FW_REGS_WINDOW) + FW_REGS_DBG_LOG_WP(msg->log.core));
91 /* determine buffer half */
92 offset = (write < size) ? size : 0;
93
94 /* Address is guaranteed to exist in SRAM2. */
95 buf = avs_log_buffer_addr(adev, msg->log.core) + offset;
96 avs_dump_fw_log_wakeup(adev, src: buf, len: size);
97
98 return 0;
99}
100
101static int avs_skl_coredump(struct avs_dev *adev, union avs_notify_msg *msg)
102{
103 u8 *dump;
104
105 dump = vzalloc(AVS_FW_REGS_SIZE);
106 if (!dump)
107 return -ENOMEM;
108
109 memcpy_fromio(dump, avs_sram_addr(adev, AVS_FW_REGS_WINDOW), AVS_FW_REGS_SIZE);
110 dev_coredumpv(dev: adev->dev, data: dump, AVS_FW_REGS_SIZE, GFP_KERNEL);
111
112 return 0;
113}
114
115static bool avs_skl_d0ix_toggle(struct avs_dev *adev, struct avs_ipc_msg *tx, bool wake)
116{
117 /* unsupported on cAVS 1.5 hw */
118 return false;
119}
120
121static int avs_skl_set_d0ix(struct avs_dev *adev, bool enable)
122{
123 /* unsupported on cAVS 1.5 hw */
124 return 0;
125}
126
127const struct avs_dsp_ops avs_skl_dsp_ops = {
128 .power = avs_dsp_core_power,
129 .reset = avs_dsp_core_reset,
130 .stall = avs_dsp_core_stall,
131 .irq_handler = avs_irq_handler,
132 .irq_thread = avs_skl_irq_thread,
133 .int_control = avs_dsp_interrupt_control,
134 .load_basefw = avs_cldma_load_basefw,
135 .load_lib = avs_cldma_load_library,
136 .transfer_mods = avs_cldma_transfer_modules,
137 .log_buffer_offset = avs_skl_log_buffer_offset,
138 .log_buffer_status = avs_skl_log_buffer_status,
139 .coredump = avs_skl_coredump,
140 .d0ix_toggle = avs_skl_d0ix_toggle,
141 .set_d0ix = avs_skl_set_d0ix,
142 AVS_SET_ENABLE_LOGS_OP(skl)
143};
144

source code of linux/sound/soc/intel/avs/skl.c