Add build system scaffolding and libc headers

1 files changed, 236 insertions, 0 deletions

diff --git a/include/arch/x86_64/sound/compress_offload.h b/include/arch/x86_64/sound/compress_offload.h
new file mode 100644
index 00000000..435fbbd8
--- /dev/null
+++ b/include/arch/x86_64/sound/compress_offload.h
@@ -0,0 +1,236 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+/*
+ *  compress_offload.h - compress offload header definations
+ *
+ *  Copyright (C) 2011 Intel Corporation
+ *  Authors:	Vinod Koul <vinod.koul@linux.intel.com>
+ *		Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
+ */
+#ifndef __COMPRESS_OFFLOAD_H
+#define __COMPRESS_OFFLOAD_H
+
+#include <linux/types.h>
+#include <sound/asound.h>
+#include <sound/compress_params.h>
+
+#define SNDRV_COMPRESS_VERSION SNDRV_PROTOCOL_VERSION(0, 3, 0)
+/**
+ * struct snd_compressed_buffer - compressed buffer
+ * @fragment_size: size of buffer fragment in bytes
+ * @fragments: number of such fragments
+ */
+struct snd_compressed_buffer {
+	__u32 fragment_size;
+	__u32 fragments;
+} __attribute__((packed, aligned(4)));
+
+/**
+ * struct snd_compr_params - compressed stream params
+ * @buffer: buffer description
+ * @codec: codec parameters
+ * @no_wake_mode: dont wake on fragment elapsed
+ */
+struct snd_compr_params {
+	struct snd_compressed_buffer buffer;
+	struct snd_codec codec;
+	__u8 no_wake_mode;
+} __attribute__((packed, aligned(4)));
+
+/**
+ * struct snd_compr_tstamp - timestamp descriptor
+ * @byte_offset: Byte offset in ring buffer to DSP
+ * @copied_total: Total number of bytes copied from/to ring buffer to/by DSP
+ * @pcm_frames: Frames decoded or encoded by DSP. This field will evolve by
+ *	large steps and should only be used to monitor encoding/decoding
+ *	progress. It shall not be used for timing estimates.
+ * @pcm_io_frames: Frames rendered or received by DSP into a mixer or an audio
+ * output/input. This field should be used for A/V sync or time estimates.
+ * @sampling_rate: sampling rate of audio
+ */
+struct snd_compr_tstamp {
+	__u32 byte_offset;
+	__u32 copied_total;
+	__u32 pcm_frames;
+	__u32 pcm_io_frames;
+	__u32 sampling_rate;
+} __attribute__((packed, aligned(4)));
+
+/**
+ * struct snd_compr_avail - avail descriptor
+ * @avail: Number of bytes available in ring buffer for writing/reading
+ * @tstamp: timestamp information
+ */
+struct snd_compr_avail {
+	__u64 avail;
+	struct snd_compr_tstamp tstamp;
+} __attribute__((packed, aligned(4)));
+
+enum snd_compr_direction {
+	SND_COMPRESS_PLAYBACK = 0,
+	SND_COMPRESS_CAPTURE,
+	SND_COMPRESS_ACCEL
+};
+
+/**
+ * struct snd_compr_caps - caps descriptor
+ * @codecs: pointer to array of codecs
+ * @direction: direction supported. Of type snd_compr_direction
+ * @min_fragment_size: minimum fragment supported by DSP
+ * @max_fragment_size: maximum fragment supported by DSP
+ * @min_fragments: min fragments supported by DSP
+ * @max_fragments: max fragments supported by DSP
+ * @num_codecs: number of codecs supported
+ * @reserved: reserved field
+ */
+struct snd_compr_caps {
+	__u32 num_codecs;
+	__u32 direction;
+	__u32 min_fragment_size;
+	__u32 max_fragment_size;
+	__u32 min_fragments;
+	__u32 max_fragments;
+	__u32 codecs[MAX_NUM_CODECS];
+	__u32 reserved[11];
+} __attribute__((packed, aligned(4)));
+
+/**
+ * struct snd_compr_codec_caps - query capability of codec
+ * @codec: codec for which capability is queried
+ * @num_descriptors: number of codec descriptors
+ * @descriptor: array of codec capability descriptor
+ */
+struct snd_compr_codec_caps {
+	__u32 codec;
+	__u32 num_descriptors;
+	struct snd_codec_desc descriptor[MAX_NUM_CODEC_DESCRIPTORS];
+} __attribute__((packed, aligned(4)));
+
+/**
+ * enum sndrv_compress_encoder - encoder metadata key
+ * @SNDRV_COMPRESS_ENCODER_PADDING: no of samples appended by the encoder at the
+ * end of the track
+ * @SNDRV_COMPRESS_ENCODER_DELAY: no of samples inserted by the encoder at the
+ * beginning of the track
+ */
+enum sndrv_compress_encoder {
+	SNDRV_COMPRESS_ENCODER_PADDING = 1,
+	SNDRV_COMPRESS_ENCODER_DELAY = 2,
+};
+
+/**
+ * struct snd_compr_metadata - compressed stream metadata
+ * @key: key id
+ * @value: key value
+ */
+struct snd_compr_metadata {
+	__u32 key;
+	__u32 value[8];
+} __attribute__((packed, aligned(4)));
+
+/* flags for struct snd_compr_task */
+#define SND_COMPRESS_TFLG_NEW_STREAM (1 << 0) /* mark for the new stream data \
+					       */
+
+/**
+ * struct snd_compr_task - task primitive for non-realtime operation
+ * @seqno: sequence number (task identifier)
+ * @origin_seqno: previous sequence number (task identifier) - for reuse
+ * @input_fd: data input file descriptor (dma-buf)
+ * @output_fd: data output file descriptor (dma-buf)
+ * @input_size: filled data in bytes (from caller, must not exceed fragment
+ * size)
+ * @flags: see SND_COMPRESS_TFLG_* defines
+ * @reserved: reserved for future extension
+ */
+struct snd_compr_task {
+	__u64 seqno;
+	__u64 origin_seqno;
+	int input_fd;
+	int output_fd;
+	__u64 input_size;
+	__u32 flags;
+	__u8 reserved[16];
+} __attribute__((packed, aligned(4)));
+
+/**
+ * enum snd_compr_state - task state
+ * @SND_COMPRESS_TASK_STATE_IDLE: task is not queued
+ * @SND_COMPRESS_TASK_STATE_ACTIVE: task is in the queue
+ * @SND_COMPRESS_TASK_STATE_FINISHED: task was processed, output is available
+ */
+enum snd_compr_state {
+	SND_COMPRESS_TASK_STATE_IDLE = 0,
+	SND_COMPRESS_TASK_STATE_ACTIVE,
+	SND_COMPRESS_TASK_STATE_FINISHED
+};
+
+/**
+ * struct snd_compr_task_status - task status
+ * @seqno: sequence number (task identifier)
+ * @input_size: filled data in bytes (from user space)
+ * @output_size: filled data in bytes (from driver)
+ * @output_flags: reserved for future (all zeros - from driver)
+ * @state: actual task state (SND_COMPRESS_TASK_STATE_*)
+ * @reserved: reserved for future extension
+ */
+struct snd_compr_task_status {
+	__u64 seqno;
+	__u64 input_size;
+	__u64 output_size;
+	__u32 output_flags;
+	__u8 state;
+	__u8 reserved[15];
+} __attribute__((packed, aligned(4)));
+
+/*
+ * compress path ioctl definitions
+ * SNDRV_COMPRESS_GET_CAPS: Query capability of DSP
+ * SNDRV_COMPRESS_GET_CODEC_CAPS: Query capability of a codec
+ * SNDRV_COMPRESS_SET_PARAMS: Set codec and stream parameters
+ * Note: only codec params can be changed runtime and stream params cant be
+ * SNDRV_COMPRESS_GET_PARAMS: Query codec params
+ * SNDRV_COMPRESS_TSTAMP: get the current timestamp value
+ * SNDRV_COMPRESS_AVAIL: get the current buffer avail value.
+ * This also queries the tstamp properties
+ * SNDRV_COMPRESS_PAUSE: Pause the running stream
+ * SNDRV_COMPRESS_RESUME: resume a paused stream
+ * SNDRV_COMPRESS_START: Start a stream
+ * SNDRV_COMPRESS_STOP: stop a running stream, discarding ring buffer content
+ * and the buffers currently with DSP
+ * SNDRV_COMPRESS_DRAIN: Play till end of buffers and stop after that
+ * SNDRV_COMPRESS_IOCTL_VERSION: Query the API version
+ */
+#define SNDRV_COMPRESS_IOCTL_VERSION _IOR('C', 0x00, int)
+#define SNDRV_COMPRESS_GET_CAPS	     _IOWR('C', 0x10, struct snd_compr_caps)
+#define SNDRV_COMPRESS_GET_CODEC_CAPS \
+	_IOWR('C', 0x11, struct snd_compr_codec_caps)
+#define SNDRV_COMPRESS_SET_PARAMS    _IOW('C', 0x12, struct snd_compr_params)
+#define SNDRV_COMPRESS_GET_PARAMS    _IOR('C', 0x13, struct snd_codec)
+#define SNDRV_COMPRESS_SET_METADATA  _IOW('C', 0x14, struct snd_compr_metadata)
+#define SNDRV_COMPRESS_GET_METADATA  _IOWR('C', 0x15, struct snd_compr_metadata)
+#define SNDRV_COMPRESS_TSTAMP	     _IOR('C', 0x20, struct snd_compr_tstamp)
+#define SNDRV_COMPRESS_AVAIL	     _IOR('C', 0x21, struct snd_compr_avail)
+#define SNDRV_COMPRESS_PAUSE	     _IO('C', 0x30)
+#define SNDRV_COMPRESS_RESUME	     _IO('C', 0x31)
+#define SNDRV_COMPRESS_START	     _IO('C', 0x32)
+#define SNDRV_COMPRESS_STOP	     _IO('C', 0x33)
+#define SNDRV_COMPRESS_DRAIN	     _IO('C', 0x34)
+#define SNDRV_COMPRESS_NEXT_TRACK    _IO('C', 0x35)
+#define SNDRV_COMPRESS_PARTIAL_DRAIN _IO('C', 0x36)
+
+#define SNDRV_COMPRESS_TASK_CREATE _IOWR('C', 0x60, struct snd_compr_task)
+#define SNDRV_COMPRESS_TASK_FREE   _IOW('C', 0x61, __u64)
+#define SNDRV_COMPRESS_TASK_START  _IOWR('C', 0x62, struct snd_compr_task)
+#define SNDRV_COMPRESS_TASK_STOP   _IOW('C', 0x63, __u64)
+#define SNDRV_COMPRESS_TASK_STATUS \
+	_IOWR('C', 0x68, struct snd_compr_task_status)
+
+/*
+ * TODO
+ * 1. add mmap support
+ *
+ */
+#define SND_COMPR_TRIGGER_DRAIN		7 /*FIXME move this to pcm.h */
+#define SND_COMPR_TRIGGER_NEXT_TRACK	8
+#define SND_COMPR_TRIGGER_PARTIAL_DRAIN 9
+#endif