ASoC: Intel: Add Intel Baytrail SST DSP IPC support
Add support for Baytrail SST DSP IPC. This provides mechanism to communicate with the DSP firmware. Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Acked-by: Liam Girdwood <liam.r.girdwood@intel.com> Signed-off-by: Mark Brown <broonie@linaro.org>
This commit is contained in:
Jarkko Nikula
Mark Brown
parent
f746966377
commit
f7d01fd675
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@ -0,0 +1,866 @@
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/*
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* Intel Baytrail SST IPC Support
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* Copyright (c) 2014, Intel Corporation.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*/
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#include <linux/types.h>
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#include <linux/kernel.h>
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#include <linux/list.h>
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#include <linux/device.h>
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#include <linux/wait.h>
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#include <linux/spinlock.h>
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#include <linux/workqueue.h>
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#include <linux/export.h>
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#include <linux/slab.h>
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#include <linux/delay.h>
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#include <linux/list.h>
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#include <linux/platform_device.h>
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#include <linux/kthread.h>
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#include <linux/firmware.h>
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#include <asm/div64.h>
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#include "sst-baytrail-ipc.h"
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#include "sst-dsp.h"
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#include "sst-dsp-priv.h"
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/* IPC message timeout */
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#define IPC_TIMEOUT_MSECS 300
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#define IPC_BOOT_MSECS 200
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#define IPC_EMPTY_LIST_SIZE 8
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/* IPC header bits */
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#define IPC_HEADER_MSG_ID_MASK 0xff
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#define IPC_HEADER_MSG_ID(x) ((x) & IPC_HEADER_MSG_ID_MASK)
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#define IPC_HEADER_STR_ID_SHIFT 8
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#define IPC_HEADER_STR_ID_MASK 0x1f
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#define IPC_HEADER_STR_ID(x) (((x) & 0x1f) << IPC_HEADER_STR_ID_SHIFT)
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#define IPC_HEADER_LARGE_SHIFT 13
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#define IPC_HEADER_LARGE(x) (((x) & 0x1) << IPC_HEADER_LARGE_SHIFT)
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#define IPC_HEADER_DATA_SHIFT 16
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#define IPC_HEADER_DATA_MASK 0x3fff
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#define IPC_HEADER_DATA(x) (((x) & 0x3fff) << IPC_HEADER_DATA_SHIFT)
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/* mask for differentiating between notification and reply message */
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#define IPC_NOTIFICATION (0x1 << 7)
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/* I2L Stream config/control msgs */
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#define IPC_IA_ALLOC_STREAM 0x20
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#define IPC_IA_FREE_STREAM 0x21
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#define IPC_IA_PAUSE_STREAM 0x24
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#define IPC_IA_RESUME_STREAM 0x25
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#define IPC_IA_DROP_STREAM 0x26
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#define IPC_IA_START_STREAM 0x30
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/* notification messages */
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#define IPC_IA_FW_INIT_CMPLT 0x81
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#define IPC_SST_PERIOD_ELAPSED 0x97
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/* IPC messages between host and ADSP */
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struct sst_byt_address_info {
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u32 addr;
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u32 size;
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} __packed;
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struct sst_byt_str_type {
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u8 codec_type;
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u8 str_type;
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u8 operation;
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u8 protected_str;
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u8 time_slots;
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u8 reserved;
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u16 result;
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} __packed;
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struct sst_byt_pcm_params {
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u8 num_chan;
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u8 pcm_wd_sz;
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u8 use_offload_path;
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u8 reserved;
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u32 sfreq;
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u8 channel_map[8];
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} __packed;
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struct sst_byt_frames_info {
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u16 num_entries;
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u16 rsrvd;
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u32 frag_size;
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struct sst_byt_address_info ring_buf_info[8];
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} __packed;
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struct sst_byt_alloc_params {
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struct sst_byt_str_type str_type;
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struct sst_byt_pcm_params pcm_params;
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struct sst_byt_frames_info frame_info;
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} __packed;
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struct sst_byt_alloc_response {
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struct sst_byt_str_type str_type;
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u8 reserved[88];
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} __packed;
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struct sst_byt_start_stream_params {
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u32 byte_offset;
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} __packed;
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struct sst_byt_tstamp {
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u64 ring_buffer_counter;
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u64 hardware_counter;
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u64 frames_decoded;
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u64 bytes_decoded;
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u64 bytes_copied;
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u32 sampling_frequency;
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u32 channel_peak[8];
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} __packed;
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/* driver internal IPC message structure */
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struct ipc_message {
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struct list_head list;
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u64 header;
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/* direction wrt host CPU */
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char tx_data[SST_BYT_IPC_MAX_PAYLOAD_SIZE];
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size_t tx_size;
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char rx_data[SST_BYT_IPC_MAX_PAYLOAD_SIZE];
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size_t rx_size;
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wait_queue_head_t waitq;
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bool complete;
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bool wait;
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int errno;
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};
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struct sst_byt_stream;
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struct sst_byt;
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/* stream infomation */
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struct sst_byt_stream {
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struct list_head node;
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/* configuration */
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struct sst_byt_alloc_params request;
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struct sst_byt_alloc_response reply;
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/* runtime info */
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struct sst_byt *byt;
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int str_id;
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bool commited;
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bool running;
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/* driver callback */
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u32 (*notify_position)(struct sst_byt_stream *stream, void *data);
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void *pdata;
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};
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/* SST Baytrail IPC data */
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struct sst_byt {
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struct device *dev;
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struct sst_dsp *dsp;
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/* stream */
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struct list_head stream_list;
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/* boot */
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wait_queue_head_t boot_wait;
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bool boot_complete;
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/* IPC messaging */
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struct list_head tx_list;
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struct list_head rx_list;
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struct list_head empty_list;
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wait_queue_head_t wait_txq;
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struct task_struct *tx_thread;
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struct kthread_worker kworker;
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struct kthread_work kwork;
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struct ipc_message *msg;
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};
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static inline u64 sst_byt_header(int msg_id, int data, bool large, int str_id)
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{
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u64 header;
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header = IPC_HEADER_MSG_ID(msg_id) |
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IPC_HEADER_STR_ID(str_id) |
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IPC_HEADER_LARGE(large) |
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IPC_HEADER_DATA(data) |
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SST_BYT_IPCX_BUSY;
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return header;
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}
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static inline u16 sst_byt_header_msg_id(u64 header)
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{
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return header & IPC_HEADER_MSG_ID_MASK;
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}
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static inline u8 sst_byt_header_str_id(u64 header)
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{
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return (header >> IPC_HEADER_STR_ID_SHIFT) & IPC_HEADER_STR_ID_MASK;
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}
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static inline u16 sst_byt_header_data(u64 header)
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{
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return (header >> IPC_HEADER_DATA_SHIFT) & IPC_HEADER_DATA_MASK;
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}
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static struct sst_byt_stream *sst_byt_get_stream(struct sst_byt *byt,
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int stream_id)
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{
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struct sst_byt_stream *stream;
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list_for_each_entry(stream, &byt->stream_list, node) {
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if (stream->str_id == stream_id)
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return stream;
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}
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return NULL;
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}
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static void sst_byt_ipc_shim_dbg(struct sst_byt *byt, const char *text)
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{
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struct sst_dsp *sst = byt->dsp;
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u64 isr, ipcd, imrx, ipcx;
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ipcx = sst_dsp_shim_read64_unlocked(sst, SST_IPCX);
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isr = sst_dsp_shim_read64_unlocked(sst, SST_ISRX);
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ipcd = sst_dsp_shim_read64_unlocked(sst, SST_IPCD);
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imrx = sst_dsp_shim_read64_unlocked(sst, SST_IMRX);
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dev_err(byt->dev,
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"ipc: --%s-- ipcx 0x%llx isr 0x%llx ipcd 0x%llx imrx 0x%llx\n",
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text, ipcx, isr, ipcd, imrx);
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}
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/* locks held by caller */
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static struct ipc_message *sst_byt_msg_get_empty(struct sst_byt *byt)
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{
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struct ipc_message *msg = NULL;
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if (!list_empty(&byt->empty_list)) {
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msg = list_first_entry(&byt->empty_list,
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struct ipc_message, list);
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list_del(&msg->list);
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}
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return msg;
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}
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static void sst_byt_ipc_tx_msgs(struct kthread_work *work)
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{
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struct sst_byt *byt =
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container_of(work, struct sst_byt, kwork);
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struct ipc_message *msg;
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u64 ipcx;
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unsigned long flags;
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spin_lock_irqsave(&byt->dsp->spinlock, flags);
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if (list_empty(&byt->tx_list)) {
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spin_unlock_irqrestore(&byt->dsp->spinlock, flags);
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return;
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}
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/* if the DSP is busy we will TX messages after IRQ */
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ipcx = sst_dsp_shim_read64_unlocked(byt->dsp, SST_IPCX);
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if (ipcx & SST_BYT_IPCX_BUSY) {
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spin_unlock_irqrestore(&byt->dsp->spinlock, flags);
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return;
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}
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msg = list_first_entry(&byt->tx_list, struct ipc_message, list);
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list_move(&msg->list, &byt->rx_list);
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/* send the message */
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if (msg->header & IPC_HEADER_LARGE(true))
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sst_dsp_outbox_write(byt->dsp, msg->tx_data, msg->tx_size);
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sst_dsp_shim_write64_unlocked(byt->dsp, SST_IPCX, msg->header);
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spin_unlock_irqrestore(&byt->dsp->spinlock, flags);
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}
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static inline void sst_byt_tx_msg_reply_complete(struct sst_byt *byt,
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struct ipc_message *msg)
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{
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msg->complete = true;
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if (!msg->wait)
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list_add_tail(&msg->list, &byt->empty_list);
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else
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wake_up(&msg->waitq);
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}
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static int sst_byt_tx_wait_done(struct sst_byt *byt, struct ipc_message *msg,
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void *rx_data)
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{
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unsigned long flags;
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int ret;
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/* wait for DSP completion */
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ret = wait_event_timeout(msg->waitq, msg->complete,
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msecs_to_jiffies(IPC_TIMEOUT_MSECS));
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spin_lock_irqsave(&byt->dsp->spinlock, flags);
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if (ret == 0) {
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list_del(&msg->list);
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sst_byt_ipc_shim_dbg(byt, "message timeout");
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ret = -ETIMEDOUT;
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} else {
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/* copy the data returned from DSP */
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if (msg->rx_size)
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memcpy(rx_data, msg->rx_data, msg->rx_size);
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ret = msg->errno;
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}
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list_add_tail(&msg->list, &byt->empty_list);
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spin_unlock_irqrestore(&byt->dsp->spinlock, flags);
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return ret;
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}
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static int sst_byt_ipc_tx_message(struct sst_byt *byt, u64 header,
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void *tx_data, size_t tx_bytes,
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void *rx_data, size_t rx_bytes, int wait)
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{
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unsigned long flags;
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struct ipc_message *msg;
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spin_lock_irqsave(&byt->dsp->spinlock, flags);
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msg = sst_byt_msg_get_empty(byt);
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if (msg == NULL) {
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spin_unlock_irqrestore(&byt->dsp->spinlock, flags);
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return -EBUSY;
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}
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msg->header = header;
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msg->tx_size = tx_bytes;
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msg->rx_size = rx_bytes;
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msg->wait = wait;
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msg->errno = 0;
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msg->complete = false;
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if (tx_bytes) {
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/* msg content = lower 32-bit of the header + data */
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*(u32 *)msg->tx_data = (u32)(header & (u32)-1);
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memcpy(msg->tx_data + sizeof(u32), tx_data, tx_bytes);
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msg->tx_size += sizeof(u32);
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}
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list_add_tail(&msg->list, &byt->tx_list);
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spin_unlock_irqrestore(&byt->dsp->spinlock, flags);
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queue_kthread_work(&byt->kworker, &byt->kwork);
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if (wait)
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return sst_byt_tx_wait_done(byt, msg, rx_data);
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else
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return 0;
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}
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static inline int sst_byt_ipc_tx_msg_wait(struct sst_byt *byt, u64 header,
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void *tx_data, size_t tx_bytes,
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void *rx_data, size_t rx_bytes)
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{
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return sst_byt_ipc_tx_message(byt, header, tx_data, tx_bytes,
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rx_data, rx_bytes, 1);
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}
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static inline int sst_byt_ipc_tx_msg_nowait(struct sst_byt *byt, u64 header,
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void *tx_data, size_t tx_bytes)
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{
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return sst_byt_ipc_tx_message(byt, header, tx_data, tx_bytes,
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NULL, 0, 0);
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}
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static struct ipc_message *sst_byt_reply_find_msg(struct sst_byt *byt,
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u64 header)
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{
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struct ipc_message *msg = NULL, *_msg;
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u64 mask;
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/* match reply to message sent based on msg and stream IDs */
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mask = IPC_HEADER_MSG_ID_MASK |
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IPC_HEADER_STR_ID_MASK << IPC_HEADER_STR_ID_SHIFT;
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header &= mask;
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if (list_empty(&byt->rx_list)) {
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dev_err(byt->dev,
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"ipc: rx list is empty but received 0x%llx\n", header);
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goto out;
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}
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list_for_each_entry(_msg, &byt->rx_list, list) {
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if ((_msg->header & mask) == header) {
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msg = _msg;
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break;
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}
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}
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out:
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return msg;
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}
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static void sst_byt_stream_update(struct sst_byt *byt, struct ipc_message *msg)
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{
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struct sst_byt_stream *stream;
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u64 header = msg->header;
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u8 stream_id = sst_byt_header_str_id(header);
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u8 stream_msg = sst_byt_header_msg_id(header);
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stream = sst_byt_get_stream(byt, stream_id);
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if (stream == NULL)
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return;
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switch (stream_msg) {
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case IPC_IA_DROP_STREAM:
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case IPC_IA_PAUSE_STREAM:
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case IPC_IA_FREE_STREAM:
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stream->running = false;
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break;
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case IPC_IA_START_STREAM:
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case IPC_IA_RESUME_STREAM:
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stream->running = true;
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break;
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}
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}
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static int sst_byt_process_reply(struct sst_byt *byt, u64 header)
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{
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struct ipc_message *msg;
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msg = sst_byt_reply_find_msg(byt, header);
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if (msg == NULL)
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return 1;
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if (header & IPC_HEADER_LARGE(true)) {
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msg->rx_size = sst_byt_header_data(header);
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sst_dsp_inbox_read(byt->dsp, msg->rx_data, msg->rx_size);
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}
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/* update any stream states */
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sst_byt_stream_update(byt, msg);
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list_del(&msg->list);
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/* wake up */
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sst_byt_tx_msg_reply_complete(byt, msg);
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return 1;
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}
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static void sst_byt_fw_ready(struct sst_byt *byt, u64 header)
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{
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dev_dbg(byt->dev, "ipc: DSP is ready 0x%llX\n", header);
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byt->boot_complete = true;
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wake_up(&byt->boot_wait);
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}
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static int sst_byt_process_notification(struct sst_byt *byt,
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unsigned long *flags)
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{
|
||||
struct sst_dsp *sst = byt->dsp;
|
||||
struct sst_byt_stream *stream;
|
||||
u64 header;
|
||||
u8 msg_id, stream_id;
|
||||
int handled = 1;
|
||||
|
||||
header = sst_dsp_shim_read64_unlocked(sst, SST_IPCD);
|
||||
msg_id = sst_byt_header_msg_id(header);
|
||||
|
||||
switch (msg_id) {
|
||||
case IPC_SST_PERIOD_ELAPSED:
|
||||
stream_id = sst_byt_header_str_id(header);
|
||||
stream = sst_byt_get_stream(byt, stream_id);
|
||||
if (stream && stream->running && stream->notify_position) {
|
||||
spin_unlock_irqrestore(&sst->spinlock, *flags);
|
||||
stream->notify_position(stream, stream->pdata);
|
||||
spin_lock_irqsave(&sst->spinlock, *flags);
|
||||
}
|
||||
break;
|
||||
case IPC_IA_FW_INIT_CMPLT:
|
||||
sst_byt_fw_ready(byt, header);
|
||||
break;
|
||||
}
|
||||
|
||||
return handled;
|
||||
}
|
||||
|
||||
static irqreturn_t sst_byt_irq_thread(int irq, void *context)
|
||||
{
|
||||
struct sst_dsp *sst = (struct sst_dsp *) context;
|
||||
struct sst_byt *byt = sst_dsp_get_thread_context(sst);
|
||||
u64 header;
|
||||
unsigned long flags;
|
||||
|
||||
spin_lock_irqsave(&sst->spinlock, flags);
|
||||
|
||||
header = sst_dsp_shim_read64_unlocked(sst, SST_IPCD);
|
||||
if (header & SST_BYT_IPCD_BUSY) {
|
||||
if (header & IPC_NOTIFICATION) {
|
||||
/* message from ADSP */
|
||||
sst_byt_process_notification(byt, &flags);
|
||||
} else {
|
||||
/* reply from ADSP */
|
||||
sst_byt_process_reply(byt, header);
|
||||
}
|
||||
/*
|
||||
* clear IPCD BUSY bit and set DONE bit. Tell DSP we have
|
||||
* processed the message and can accept new. Clear data part
|
||||
* of the header
|
||||
*/
|
||||
sst_dsp_shim_update_bits64_unlocked(sst, SST_IPCD,
|
||||
SST_BYT_IPCD_DONE | SST_BYT_IPCD_BUSY |
|
||||
IPC_HEADER_DATA(IPC_HEADER_DATA_MASK),
|
||||
SST_BYT_IPCD_DONE);
|
||||
/* unmask message request interrupts */
|
||||
sst_dsp_shim_update_bits64_unlocked(sst, SST_IMRX,
|
||||
SST_BYT_IMRX_REQUEST, 0);
|
||||
}
|
||||
|
||||
spin_unlock_irqrestore(&sst->spinlock, flags);
|
||||
|
||||
/* continue to send any remaining messages... */
|
||||
queue_kthread_work(&byt->kworker, &byt->kwork);
|
||||
|
||||
return IRQ_HANDLED;
|
||||
}
|
||||
|
||||
/* stream API */
|
||||
struct sst_byt_stream *sst_byt_stream_new(struct sst_byt *byt, int id,
|
||||
u32 (*notify_position)(struct sst_byt_stream *stream, void *data),
|
||||
void *data)
|
||||
{
|
||||
struct sst_byt_stream *stream;
|
||||
|
||||
stream = kzalloc(sizeof(*stream), GFP_KERNEL);
|
||||
if (stream == NULL)
|
||||
return NULL;
|
||||
|
||||
list_add(&stream->node, &byt->stream_list);
|
||||
stream->notify_position = notify_position;
|
||||
stream->pdata = data;
|
||||
stream->byt = byt;
|
||||
stream->str_id = id;
|
||||
|
||||
return stream;
|
||||
}
|
||||
|
||||
int sst_byt_stream_set_bits(struct sst_byt *byt, struct sst_byt_stream *stream,
|
||||
int bits)
|
||||
{
|
||||
stream->request.pcm_params.pcm_wd_sz = bits;
|
||||
return 0;
|
||||
}
|
||||
|
||||
int sst_byt_stream_set_channels(struct sst_byt *byt,
|
||||
struct sst_byt_stream *stream, u8 channels)
|
||||
{
|
||||
stream->request.pcm_params.num_chan = channels;
|
||||
return 0;
|
||||
}
|
||||
|
||||
int sst_byt_stream_set_rate(struct sst_byt *byt, struct sst_byt_stream *stream,
|
||||
unsigned int rate)
|
||||
{
|
||||
stream->request.pcm_params.sfreq = rate;
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* stream sonfiguration */
|
||||
int sst_byt_stream_type(struct sst_byt *byt, struct sst_byt_stream *stream,
|
||||
int codec_type, int stream_type, int operation)
|
||||
{
|
||||
stream->request.str_type.codec_type = codec_type;
|
||||
stream->request.str_type.str_type = stream_type;
|
||||
stream->request.str_type.operation = operation;
|
||||
stream->request.str_type.time_slots = 0xc;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int sst_byt_stream_buffer(struct sst_byt *byt, struct sst_byt_stream *stream,
|
||||
uint32_t buffer_addr, uint32_t buffer_size)
|
||||
{
|
||||
stream->request.frame_info.num_entries = 1;
|
||||
stream->request.frame_info.ring_buf_info[0].addr = buffer_addr;
|
||||
stream->request.frame_info.ring_buf_info[0].size = buffer_size;
|
||||
/* calculate bytes per 4 ms fragment */
|
||||
stream->request.frame_info.frag_size =
|
||||
stream->request.pcm_params.sfreq *
|
||||
stream->request.pcm_params.num_chan *
|
||||
stream->request.pcm_params.pcm_wd_sz / 8 *
|
||||
4 / 1000;
|
||||
return 0;
|
||||
}
|
||||
|
||||
int sst_byt_stream_commit(struct sst_byt *byt, struct sst_byt_stream *stream)
|
||||
{
|
||||
struct sst_byt_alloc_params *str_req = &stream->request;
|
||||
struct sst_byt_alloc_response *reply = &stream->reply;
|
||||
u64 header;
|
||||
int ret;
|
||||
|
||||
header = sst_byt_header(IPC_IA_ALLOC_STREAM,
|
||||
sizeof(*str_req) + sizeof(u32),
|
||||
true, stream->str_id);
|
||||
ret = sst_byt_ipc_tx_msg_wait(byt, header, str_req, sizeof(*str_req),
|
||||
reply, sizeof(*reply));
|
||||
if (ret < 0) {
|
||||
dev_err(byt->dev, "ipc: error stream commit failed\n");
|
||||
return ret;
|
||||
}
|
||||
|
||||
stream->commited = true;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int sst_byt_stream_free(struct sst_byt *byt, struct sst_byt_stream *stream)
|
||||
{
|
||||
u64 header;
|
||||
int ret = 0;
|
||||
|
||||
if (!stream->commited)
|
||||
goto out;
|
||||
|
||||
header = sst_byt_header(IPC_IA_FREE_STREAM, 0, false, stream->str_id);
|
||||
ret = sst_byt_ipc_tx_msg_wait(byt, header, NULL, 0, NULL, 0);
|
||||
if (ret < 0) {
|
||||
dev_err(byt->dev, "ipc: free stream %d failed\n",
|
||||
stream->str_id);
|
||||
return -EAGAIN;
|
||||
}
|
||||
|
||||
stream->commited = false;
|
||||
out:
|
||||
list_del(&stream->node);
|
||||
kfree(stream);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int sst_byt_stream_operations(struct sst_byt *byt, int type,
|
||||
int stream_id, int wait)
|
||||
{
|
||||
struct sst_byt_start_stream_params start_stream;
|
||||
u64 header;
|
||||
void *tx_msg = NULL;
|
||||
size_t size = 0;
|
||||
|
||||
if (type != IPC_IA_START_STREAM) {
|
||||
header = sst_byt_header(type, 0, false, stream_id);
|
||||
} else {
|
||||
start_stream.byte_offset = 0;
|
||||
header = sst_byt_header(IPC_IA_START_STREAM,
|
||||
sizeof(start_stream) + sizeof(u32),
|
||||
true, stream_id);
|
||||
tx_msg = &start_stream;
|
||||
size = sizeof(start_stream);
|
||||
}
|
||||
|
||||
if (wait)
|
||||
return sst_byt_ipc_tx_msg_wait(byt, header,
|
||||
tx_msg, size, NULL, 0);
|
||||
else
|
||||
return sst_byt_ipc_tx_msg_nowait(byt, header, tx_msg, size);
|
||||
}
|
||||
|
||||
/* stream ALSA trigger operations */
|
||||
int sst_byt_stream_start(struct sst_byt *byt, struct sst_byt_stream *stream)
|
||||
{
|
||||
int ret;
|
||||
|
||||
ret = sst_byt_stream_operations(byt, IPC_IA_START_STREAM,
|
||||
stream->str_id, 0);
|
||||
if (ret < 0)
|
||||
dev_err(byt->dev, "ipc: error failed to start stream %d\n",
|
||||
stream->str_id);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
int sst_byt_stream_stop(struct sst_byt *byt, struct sst_byt_stream *stream)
|
||||
{
|
||||
int ret;
|
||||
|
||||
/* don't stop streams that are not commited */
|
||||
if (!stream->commited)
|
||||
return 0;
|
||||
|
||||
ret = sst_byt_stream_operations(byt, IPC_IA_DROP_STREAM,
|
||||
stream->str_id, 0);
|
||||
if (ret < 0)
|
||||
dev_err(byt->dev, "ipc: error failed to stop stream %d\n",
|
||||
stream->str_id);
|
||||
return ret;
|
||||
}
|
||||
|
||||
int sst_byt_stream_pause(struct sst_byt *byt, struct sst_byt_stream *stream)
|
||||
{
|
||||
int ret;
|
||||
|
||||
ret = sst_byt_stream_operations(byt, IPC_IA_PAUSE_STREAM,
|
||||
stream->str_id, 0);
|
||||
if (ret < 0)
|
||||
dev_err(byt->dev, "ipc: error failed to pause stream %d\n",
|
||||
stream->str_id);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
int sst_byt_stream_resume(struct sst_byt *byt, struct sst_byt_stream *stream)
|
||||
{
|
||||
int ret;
|
||||
|
||||
ret = sst_byt_stream_operations(byt, IPC_IA_RESUME_STREAM,
|
||||
stream->str_id, 0);
|
||||
if (ret < 0)
|
||||
dev_err(byt->dev, "ipc: error failed to resume stream %d\n",
|
||||
stream->str_id);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
int sst_byt_get_dsp_position(struct sst_byt *byt,
|
||||
struct sst_byt_stream *stream, int buffer_size)
|
||||
{
|
||||
struct sst_dsp *sst = byt->dsp;
|
||||
struct sst_byt_tstamp fw_tstamp;
|
||||
u8 str_id = stream->str_id;
|
||||
u32 tstamp_offset;
|
||||
|
||||
tstamp_offset = SST_BYT_TIMESTAMP_OFFSET + str_id * sizeof(fw_tstamp);
|
||||
memcpy_fromio(&fw_tstamp,
|
||||
sst->addr.lpe + tstamp_offset, sizeof(fw_tstamp));
|
||||
|
||||
return do_div(fw_tstamp.ring_buffer_counter, buffer_size);
|
||||
}
|
||||
|
||||
static int msg_empty_list_init(struct sst_byt *byt)
|
||||
{
|
||||
struct ipc_message *msg;
|
||||
int i;
|
||||
|
||||
byt->msg = kzalloc(sizeof(*msg) * IPC_EMPTY_LIST_SIZE, GFP_KERNEL);
|
||||
if (byt->msg == NULL)
|
||||
return -ENOMEM;
|
||||
|
||||
for (i = 0; i < IPC_EMPTY_LIST_SIZE; i++) {
|
||||
init_waitqueue_head(&byt->msg[i].waitq);
|
||||
list_add(&byt->msg[i].list, &byt->empty_list);
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
struct sst_dsp *sst_byt_get_dsp(struct sst_byt *byt)
|
||||
{
|
||||
return byt->dsp;
|
||||
}
|
||||
|
||||
static struct sst_dsp_device byt_dev = {
|
||||
.thread = sst_byt_irq_thread,
|
||||
.ops = &sst_byt_ops,
|
||||
};
|
||||
|
||||
int sst_byt_dsp_init(struct device *dev, struct sst_pdata *pdata)
|
||||
{
|
||||
struct sst_byt *byt;
|
||||
struct sst_fw *byt_sst_fw;
|
||||
int err;
|
||||
|
||||
dev_dbg(dev, "initialising Byt DSP IPC\n");
|
||||
|
||||
byt = devm_kzalloc(dev, sizeof(*byt), GFP_KERNEL);
|
||||
if (byt == NULL)
|
||||
return -ENOMEM;
|
||||
|
||||
byt->dev = dev;
|
||||
INIT_LIST_HEAD(&byt->stream_list);
|
||||
INIT_LIST_HEAD(&byt->tx_list);
|
||||
INIT_LIST_HEAD(&byt->rx_list);
|
||||
INIT_LIST_HEAD(&byt->empty_list);
|
||||
init_waitqueue_head(&byt->boot_wait);
|
||||
init_waitqueue_head(&byt->wait_txq);
|
||||
|
||||
err = msg_empty_list_init(byt);
|
||||
if (err < 0)
|
||||
goto list_err;
|
||||
|
||||
/* start the IPC message thread */
|
||||
init_kthread_worker(&byt->kworker);
|
||||
byt->tx_thread = kthread_run(kthread_worker_fn,
|
||||
&byt->kworker,
|
||||
dev_name(byt->dev));
|
||||
if (IS_ERR(byt->tx_thread)) {
|
||||
err = PTR_ERR(byt->tx_thread);
|
||||
dev_err(byt->dev, "error failed to create message TX task\n");
|
||||
goto list_err;
|
||||
}
|
||||
init_kthread_work(&byt->kwork, sst_byt_ipc_tx_msgs);
|
||||
|
||||
byt_dev.thread_context = byt;
|
||||
|
||||
/* init SST shim */
|
||||
byt->dsp = sst_dsp_new(dev, &byt_dev, pdata);
|
||||
if (byt->dsp == NULL) {
|
||||
err = -ENODEV;
|
||||
goto list_err;
|
||||
}
|
||||
|
||||
/* keep the DSP in reset state for base FW loading */
|
||||
sst_dsp_reset(byt->dsp);
|
||||
|
||||
byt_sst_fw = sst_fw_new(byt->dsp, pdata->fw, byt);
|
||||
if (byt_sst_fw == NULL) {
|
||||
err = -ENODEV;
|
||||
dev_err(dev, "error: failed to load firmware\n");
|
||||
goto fw_err;
|
||||
}
|
||||
|
||||
/* wait for DSP boot completion */
|
||||
sst_dsp_boot(byt->dsp);
|
||||
err = wait_event_timeout(byt->boot_wait, byt->boot_complete,
|
||||
msecs_to_jiffies(IPC_BOOT_MSECS));
|
||||
if (err == 0) {
|
||||
err = -EIO;
|
||||
dev_err(byt->dev, "ipc: error DSP boot timeout\n");
|
||||
goto boot_err;
|
||||
}
|
||||
|
||||
pdata->dsp = byt;
|
||||
|
||||
return 0;
|
||||
|
||||
boot_err:
|
||||
sst_dsp_reset(byt->dsp);
|
||||
sst_fw_free(byt_sst_fw);
|
||||
fw_err:
|
||||
sst_dsp_free(byt->dsp);
|
||||
kfree(byt->msg);
|
||||
list_err:
|
||||
kfree(byt);
|
||||
return err;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(sst_byt_dsp_init);
|
||||
|
||||
void sst_byt_dsp_free(struct device *dev, struct sst_pdata *pdata)
|
||||
{
|
||||
struct sst_byt *byt = pdata->dsp;
|
||||
|
||||
sst_dsp_reset(byt->dsp);
|
||||
sst_fw_free_all(byt->dsp);
|
||||
sst_dsp_free(byt->dsp);
|
||||
kfree(byt->msg);
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(sst_byt_dsp_free);
|
||||
|
|
@ -0,0 +1,69 @@
|
|||
/*
|
||||
* Intel Baytrail SST IPC Support
|
||||
* Copyright (c) 2014, Intel Corporation.
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify it
|
||||
* under the terms and conditions of the GNU General Public License,
|
||||
* version 2, as published by the Free Software Foundation.
|
||||
*
|
||||
* This program is distributed in the hope it will be useful, but WITHOUT
|
||||
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
||||
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
||||
* more details.
|
||||
*/
|
||||
|
||||
#ifndef __SST_BYT_IPC_H
|
||||
#define __SST_BYT_IPC_H
|
||||
|
||||
#include <linux/types.h>
|
||||
|
||||
struct sst_byt;
|
||||
struct sst_byt_stream;
|
||||
struct sst_pdata;
|
||||
extern struct sst_ops sst_byt_ops;
|
||||
|
||||
|
||||
#define SST_BYT_MAILBOX_OFFSET 0x144000
|
||||
#define SST_BYT_TIMESTAMP_OFFSET (SST_BYT_MAILBOX_OFFSET + 0x800)
|
||||
|
||||
/**
|
||||
* Upfront defined maximum message size that is
|
||||
* expected by the in/out communication pipes in FW.
|
||||
*/
|
||||
#define SST_BYT_IPC_MAX_PAYLOAD_SIZE 200
|
||||
|
||||
/* stream API */
|
||||
struct sst_byt_stream *sst_byt_stream_new(struct sst_byt *byt, int id,
|
||||
uint32_t (*get_write_position)(struct sst_byt_stream *stream,
|
||||
void *data),
|
||||
void *data);
|
||||
|
||||
/* stream configuration */
|
||||
int sst_byt_stream_set_bits(struct sst_byt *byt, struct sst_byt_stream *stream,
|
||||
int bits);
|
||||
int sst_byt_stream_set_channels(struct sst_byt *byt,
|
||||
struct sst_byt_stream *stream, u8 channels);
|
||||
int sst_byt_stream_set_rate(struct sst_byt *byt, struct sst_byt_stream *stream,
|
||||
unsigned int rate);
|
||||
int sst_byt_stream_type(struct sst_byt *byt, struct sst_byt_stream *stream,
|
||||
int codec_type, int stream_type, int operation);
|
||||
int sst_byt_stream_buffer(struct sst_byt *byt, struct sst_byt_stream *stream,
|
||||
uint32_t buffer_addr, uint32_t buffer_size);
|
||||
int sst_byt_stream_commit(struct sst_byt *byt, struct sst_byt_stream *stream);
|
||||
int sst_byt_stream_free(struct sst_byt *byt, struct sst_byt_stream *stream);
|
||||
|
||||
/* stream ALSA trigger operations */
|
||||
int sst_byt_stream_start(struct sst_byt *byt, struct sst_byt_stream *stream);
|
||||
int sst_byt_stream_stop(struct sst_byt *byt, struct sst_byt_stream *stream);
|
||||
int sst_byt_stream_pause(struct sst_byt *byt, struct sst_byt_stream *stream);
|
||||
int sst_byt_stream_resume(struct sst_byt *byt, struct sst_byt_stream *stream);
|
||||
|
||||
int sst_byt_get_dsp_position(struct sst_byt *byt,
|
||||
struct sst_byt_stream *stream, int buffer_size);
|
||||
|
||||
/* init */
|
||||
int sst_byt_dsp_init(struct device *dev, struct sst_pdata *pdata);
|
||||
void sst_byt_dsp_free(struct device *dev, struct sst_pdata *pdata);
|
||||
struct sst_dsp *sst_byt_get_dsp(struct sst_byt *byt);
|
||||
|
||||
#endif
|
||||
Loading…
Reference in New Issue