diff options
Diffstat (limited to 'sound/soc/intel/sst-baytrail-ipc.c')
| -rw-r--r-- | sound/soc/intel/sst-baytrail-ipc.c | 983 |
1 files changed, 0 insertions, 983 deletions
diff --git a/sound/soc/intel/sst-baytrail-ipc.c b/sound/soc/intel/sst-baytrail-ipc.c deleted file mode 100644 index b4ad98c43e5c..000000000000 --- a/sound/soc/intel/sst-baytrail-ipc.c +++ /dev/null @@ -1,983 +0,0 @@ -/* - * 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. - */ - -#include <linux/types.h> -#include <linux/kernel.h> -#include <linux/list.h> -#include <linux/device.h> -#include <linux/wait.h> -#include <linux/spinlock.h> -#include <linux/workqueue.h> -#include <linux/export.h> -#include <linux/slab.h> -#include <linux/delay.h> -#include <linux/platform_device.h> -#include <linux/kthread.h> -#include <linux/firmware.h> -#include <linux/io.h> -#include <asm/div64.h> - -#include "sst-baytrail-ipc.h" -#include "sst-dsp.h" -#include "sst-dsp-priv.h" - -/* IPC message timeout */ -#define IPC_TIMEOUT_MSECS 300 -#define IPC_BOOT_MSECS 200 - -#define IPC_EMPTY_LIST_SIZE 8 - -/* IPC header bits */ -#define IPC_HEADER_MSG_ID_MASK 0xff -#define IPC_HEADER_MSG_ID(x) ((x) & IPC_HEADER_MSG_ID_MASK) -#define IPC_HEADER_STR_ID_SHIFT 8 -#define IPC_HEADER_STR_ID_MASK 0x1f -#define IPC_HEADER_STR_ID(x) (((x) & 0x1f) << IPC_HEADER_STR_ID_SHIFT) -#define IPC_HEADER_LARGE_SHIFT 13 -#define IPC_HEADER_LARGE(x) (((x) & 0x1) << IPC_HEADER_LARGE_SHIFT) -#define IPC_HEADER_DATA_SHIFT 16 -#define IPC_HEADER_DATA_MASK 0x3fff -#define IPC_HEADER_DATA(x) (((x) & 0x3fff) << IPC_HEADER_DATA_SHIFT) - -/* mask for differentiating between notification and reply message */ -#define IPC_NOTIFICATION (0x1 << 7) - -/* I2L Stream config/control msgs */ -#define IPC_IA_ALLOC_STREAM 0x20 -#define IPC_IA_FREE_STREAM 0x21 -#define IPC_IA_PAUSE_STREAM 0x24 -#define IPC_IA_RESUME_STREAM 0x25 -#define IPC_IA_DROP_STREAM 0x26 -#define IPC_IA_START_STREAM 0x30 - -/* notification messages */ -#define IPC_IA_FW_INIT_CMPLT 0x81 -#define IPC_SST_PERIOD_ELAPSED 0x97 - -/* IPC messages between host and ADSP */ -struct sst_byt_address_info { - u32 addr; - u32 size; -} __packed; - -struct sst_byt_str_type { - u8 codec_type; - u8 str_type; - u8 operation; - u8 protected_str; - u8 time_slots; - u8 reserved; - u16 result; -} __packed; - -struct sst_byt_pcm_params { - u8 num_chan; - u8 pcm_wd_sz; - u8 use_offload_path; - u8 reserved; - u32 sfreq; - u8 channel_map[8]; -} __packed; - -struct sst_byt_frames_info { - u16 num_entries; - u16 rsrvd; - u32 frag_size; - struct sst_byt_address_info ring_buf_info[8]; -} __packed; - -struct sst_byt_alloc_params { - struct sst_byt_str_type str_type; - struct sst_byt_pcm_params pcm_params; - struct sst_byt_frames_info frame_info; -} __packed; - -struct sst_byt_alloc_response { - struct sst_byt_str_type str_type; - u8 reserved[88]; -} __packed; - -struct sst_byt_start_stream_params { - u32 byte_offset; -} __packed; - -struct sst_byt_tstamp { - u64 ring_buffer_counter; - u64 hardware_counter; - u64 frames_decoded; - u64 bytes_decoded; - u64 bytes_copied; - u32 sampling_frequency; - u32 channel_peak[8]; -} __packed; - -struct sst_byt_fw_version { - u8 build; - u8 minor; - u8 major; - u8 type; -} __packed; - -struct sst_byt_fw_build_info { - u8 date[16]; - u8 time[16]; -} __packed; - -struct sst_byt_fw_init { - struct sst_byt_fw_version fw_version; - struct sst_byt_fw_build_info build_info; - u16 result; - u8 module_id; - u8 debug_info; -} __packed; - -/* driver internal IPC message structure */ -struct ipc_message { - struct list_head list; - u64 header; - - /* direction wrt host CPU */ - char tx_data[SST_BYT_IPC_MAX_PAYLOAD_SIZE]; - size_t tx_size; - char rx_data[SST_BYT_IPC_MAX_PAYLOAD_SIZE]; - size_t rx_size; - - wait_queue_head_t waitq; - bool complete; - bool wait; - int errno; -}; - -struct sst_byt_stream; -struct sst_byt; - -/* stream infomation */ -struct sst_byt_stream { - struct list_head node; - - /* configuration */ - struct sst_byt_alloc_params request; - struct sst_byt_alloc_response reply; - - /* runtime info */ - struct sst_byt *byt; - int str_id; - bool commited; - bool running; - - /* driver callback */ - u32 (*notify_position)(struct sst_byt_stream *stream, void *data); - void *pdata; -}; - -/* SST Baytrail IPC data */ -struct sst_byt { - struct device *dev; - struct sst_dsp *dsp; - - /* stream */ - struct list_head stream_list; - - /* boot */ - wait_queue_head_t boot_wait; - bool boot_complete; - struct sst_fw *fw; - - /* IPC messaging */ - struct list_head tx_list; - struct list_head rx_list; - struct list_head empty_list; - wait_queue_head_t wait_txq; - struct task_struct *tx_thread; - struct kthread_worker kworker; - struct kthread_work kwork; - struct ipc_message *msg; -}; - -static inline u64 sst_byt_header(int msg_id, int data, bool large, int str_id) -{ - u64 header; - - header = IPC_HEADER_MSG_ID(msg_id) | - IPC_HEADER_STR_ID(str_id) | - IPC_HEADER_LARGE(large) | - IPC_HEADER_DATA(data) | - SST_BYT_IPCX_BUSY; - - return header; -} - -static inline u16 sst_byt_header_msg_id(u64 header) -{ - return header & IPC_HEADER_MSG_ID_MASK; -} - -static inline u8 sst_byt_header_str_id(u64 header) -{ - return (header >> IPC_HEADER_STR_ID_SHIFT) & IPC_HEADER_STR_ID_MASK; -} - -static inline u16 sst_byt_header_data(u64 header) -{ - return (header >> IPC_HEADER_DATA_SHIFT) & IPC_HEADER_DATA_MASK; -} - -static struct sst_byt_stream *sst_byt_get_stream(struct sst_byt *byt, - int stream_id) -{ - struct sst_byt_stream *stream; - - list_for_each_entry(stream, &byt->stream_list, node) { - if (stream->str_id == stream_id) - return stream; - } - - return NULL; -} - -static void sst_byt_ipc_shim_dbg(struct sst_byt *byt, const char *text) -{ - struct sst_dsp *sst = byt->dsp; - u64 isr, ipcd, imrx, ipcx; - - ipcx = sst_dsp_shim_read64_unlocked(sst, SST_IPCX); - isr = sst_dsp_shim_read64_unlocked(sst, SST_ISRX); - ipcd = sst_dsp_shim_read64_unlocked(sst, SST_IPCD); - imrx = sst_dsp_shim_read64_unlocked(sst, SST_IMRX); - - dev_err(byt->dev, - "ipc: --%s-- ipcx 0x%llx isr 0x%llx ipcd 0x%llx imrx 0x%llx\n", - text, ipcx, isr, ipcd, imrx); -} - -/* locks held by caller */ -static struct ipc_message *sst_byt_msg_get_empty(struct sst_byt *byt) -{ - struct ipc_message *msg = NULL; - - if (!list_empty(&byt->empty_list)) { - msg = list_first_entry(&byt->empty_list, - struct ipc_message, list); - list_del(&msg->list); - } - - return msg; -} - -static void sst_byt_ipc_tx_msgs(struct kthread_work *work) -{ - struct sst_byt *byt = - container_of(work, struct sst_byt, kwork); - struct ipc_message *msg; - u64 ipcx; - unsigned long flags; - - spin_lock_irqsave(&byt->dsp->spinlock, flags); - if (list_empty(&byt->tx_list)) { - spin_unlock_irqrestore(&byt->dsp->spinlock, flags); - return; - } - - /* if the DSP is busy we will TX messages after IRQ */ - ipcx = sst_dsp_shim_read64_unlocked(byt->dsp, SST_IPCX); - if (ipcx & SST_BYT_IPCX_BUSY) { - spin_unlock_irqrestore(&byt->dsp->spinlock, flags); - return; - } - - msg = list_first_entry(&byt->tx_list, struct ipc_message, list); - - list_move(&msg->list, &byt->rx_list); - - /* send the message */ - if (msg->header & IPC_HEADER_LARGE(true)) - sst_dsp_outbox_write(byt->dsp, msg->tx_data, msg->tx_size); - sst_dsp_shim_write64_unlocked(byt->dsp, SST_IPCX, msg->header); - - spin_unlock_irqrestore(&byt->dsp->spinlock, flags); -} - -static inline void sst_byt_tx_msg_reply_complete(struct sst_byt *byt, - struct ipc_message *msg) -{ - msg->complete = true; - - if (!msg->wait) - list_add_tail(&msg->list, &byt->empty_list); - else - wake_up(&msg->waitq); -} - -static void sst_byt_drop_all(struct sst_byt *byt) -{ - struct ipc_message *msg, *tmp; - unsigned long flags; - - /* drop all TX and Rx messages before we stall + reset DSP */ - spin_lock_irqsave(&byt->dsp->spinlock, flags); - list_for_each_entry_safe(msg, tmp, &byt->tx_list, list) { - list_move(&msg->list, &byt->empty_list); - } - - list_for_each_entry_safe(msg, tmp, &byt->rx_list, list) { - list_move(&msg->list, &byt->empty_list); - } - - spin_unlock_irqrestore(&byt->dsp->spinlock, flags); -} - -static int sst_byt_tx_wait_done(struct sst_byt *byt, struct ipc_message *msg, - void *rx_data) -{ - unsigned long flags; - int ret; - - /* wait for DSP completion */ - ret = wait_event_timeout(msg->waitq, msg->complete, - msecs_to_jiffies(IPC_TIMEOUT_MSECS)); - - spin_lock_irqsave(&byt->dsp->spinlock, flags); - if (ret == 0) { - list_del(&msg->list); - sst_byt_ipc_shim_dbg(byt, "message timeout"); - - ret = -ETIMEDOUT; - } else { - - /* copy the data returned from DSP */ - if (msg->rx_size) - memcpy(rx_data, msg->rx_data, msg->rx_size); - ret = msg->errno; - } - - list_add_tail(&msg->list, &byt->empty_list); - spin_unlock_irqrestore(&byt->dsp->spinlock, flags); - return ret; -} - -static int sst_byt_ipc_tx_message(struct sst_byt *byt, u64 header, - void *tx_data, size_t tx_bytes, - void *rx_data, size_t rx_bytes, int wait) -{ - unsigned long flags; - struct ipc_message *msg; - - spin_lock_irqsave(&byt->dsp->spinlock, flags); - - msg = sst_byt_msg_get_empty(byt); - if (msg == NULL) { - spin_unlock_irqrestore(&byt->dsp->spinlock, flags); - return -EBUSY; - } - - msg->header = header; - msg->tx_size = tx_bytes; - msg->rx_size = rx_bytes; - msg->wait = wait; - msg->errno = 0; - msg->complete = false; - - if (tx_bytes) { - /* msg content = lower 32-bit of the header + data */ - *(u32 *)msg->tx_data = (u32)(header & (u32)-1); - memcpy(msg->tx_data + sizeof(u32), tx_data, tx_bytes); - msg->tx_size += sizeof(u32); - } - - list_add_tail(&msg->list, &byt->tx_list); - spin_unlock_irqrestore(&byt->dsp->spinlock, flags); - - queue_kthread_work(&byt->kworker, &byt->kwork); - - if (wait) - return sst_byt_tx_wait_done(byt, msg, rx_data); - else - return 0; -} - -static inline int sst_byt_ipc_tx_msg_wait(struct sst_byt *byt, u64 header, - void *tx_data, size_t tx_bytes, - void *rx_data, size_t rx_bytes) -{ - return sst_byt_ipc_tx_message(byt, header, tx_data, tx_bytes, - rx_data, rx_bytes, 1); -} - -static inline int sst_byt_ipc_tx_msg_nowait(struct sst_byt *byt, u64 header, - void *tx_data, size_t tx_bytes) -{ - return sst_byt_ipc_tx_message(byt, header, tx_data, tx_bytes, - NULL, 0, 0); -} - -static struct ipc_message *sst_byt_reply_find_msg(struct sst_byt *byt, - u64 header) -{ - struct ipc_message *msg = NULL, *_msg; - u64 mask; - - /* match reply to message sent based on msg and stream IDs */ - mask = IPC_HEADER_MSG_ID_MASK | - IPC_HEADER_STR_ID_MASK << IPC_HEADER_STR_ID_SHIFT; - header &= mask; - - if (list_empty(&byt->rx_list)) { - dev_err(byt->dev, - "ipc: rx list is empty but received 0x%llx\n", header); - goto out; - } - - list_for_each_entry(_msg, &byt->rx_list, list) { - if ((_msg->header & mask) == header) { - msg = _msg; - break; - } - } - -out: - return msg; -} - -static void sst_byt_stream_update(struct sst_byt *byt, struct ipc_message *msg) -{ - struct sst_byt_stream *stream; - u64 header = msg->header; - u8 stream_id = sst_byt_header_str_id(header); - u8 stream_msg = sst_byt_header_msg_id(header); - - stream = sst_byt_get_stream(byt, stream_id); - if (stream == NULL) - return; - - switch (stream_msg) { - case IPC_IA_DROP_STREAM: - case IPC_IA_PAUSE_STREAM: - case IPC_IA_FREE_STREAM: - stream->running = false; - break; - case IPC_IA_START_STREAM: - case IPC_IA_RESUME_STREAM: - stream->running = true; - break; - } -} - -static int sst_byt_process_reply(struct sst_byt *byt, u64 header) -{ - struct ipc_message *msg; - - msg = sst_byt_reply_find_msg(byt, header); - if (msg == NULL) - return 1; - - if (header & IPC_HEADER_LARGE(true)) { - msg->rx_size = sst_byt_header_data(header); - sst_dsp_inbox_read(byt->dsp, msg->rx_data, msg->rx_size); - } - - /* update any stream states */ - sst_byt_stream_update(byt, msg); - - list_del(&msg->list); - /* wake up */ - sst_byt_tx_msg_reply_complete(byt, msg); - - return 1; -} - -static void sst_byt_fw_ready(struct sst_byt *byt, u64 header) -{ - dev_dbg(byt->dev, "ipc: DSP is ready 0x%llX\n", header); - - byt->boot_complete = true; - wake_up(&byt->boot_wait); -} - -static int sst_byt_process_notification(struct sst_byt *byt, - unsigned long *flags) -{ - 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; - struct sst_dsp *sst = byt->dsp; - unsigned long flags; - - stream = kzalloc(sizeof(*stream), GFP_KERNEL); - if (stream == NULL) - return NULL; - - spin_lock_irqsave(&sst->spinlock, flags); - list_add(&stream->node, &byt->stream_list); - stream->notify_position = notify_position; - stream->pdata = data; - stream->byt = byt; - stream->str_id = id; - spin_unlock_irqrestore(&sst->spinlock, flags); - - 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; - struct sst_dsp *sst = byt->dsp; - unsigned long flags; - - 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: - spin_lock_irqsave(&sst->spinlock, flags); - list_del(&stream->node); - kfree(stream); - spin_unlock_irqrestore(&sst->spinlock, flags); - - return ret; -} - -static int sst_byt_stream_operations(struct sst_byt *byt, int type, - int stream_id, int wait) -{ - u64 header; - - header = sst_byt_header(type, 0, false, stream_id); - if (wait) - return sst_byt_ipc_tx_msg_wait(byt, header, NULL, 0, NULL, 0); - else - return sst_byt_ipc_tx_msg_nowait(byt, header, NULL, 0); -} - -/* stream ALSA trigger operations */ -int sst_byt_stream_start(struct sst_byt *byt, struct sst_byt_stream *stream, - u32 start_offset) -{ - struct sst_byt_start_stream_params start_stream; - void *tx_msg; - size_t size; - u64 header; - int ret; - - start_stream.byte_offset = start_offset; - header = sst_byt_header(IPC_IA_START_STREAM, - sizeof(start_stream) + sizeof(u32), - true, stream->str_id); - tx_msg = &start_stream; - size = sizeof(start_stream); - - ret = sst_byt_ipc_tx_msg_nowait(byt, header, tx_msg, size); - 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_suspend_late(struct device *dev, struct sst_pdata *pdata) -{ - struct sst_byt *byt = pdata->dsp; - - dev_dbg(byt->dev, "dsp reset\n"); - sst_dsp_reset(byt->dsp); - sst_byt_drop_all(byt); - dev_dbg(byt->dev, "dsp in reset\n"); - - dev_dbg(byt->dev, "free all blocks and unload fw\n"); - sst_fw_unload(byt->fw); - - return 0; -} -EXPORT_SYMBOL_GPL(sst_byt_dsp_suspend_late); - -int sst_byt_dsp_boot(struct device *dev, struct sst_pdata *pdata) -{ - struct sst_byt *byt = pdata->dsp; - int ret; - - dev_dbg(byt->dev, "reload dsp fw\n"); - - sst_dsp_reset(byt->dsp); - - ret = sst_fw_reload(byt->fw); - if (ret < 0) { - dev_err(dev, "error: failed to reload firmware\n"); - return ret; - } - - /* wait for DSP boot completion */ - byt->boot_complete = false; - sst_dsp_boot(byt->dsp); - dev_dbg(byt->dev, "dsp booting...\n"); - - return 0; -} -EXPORT_SYMBOL_GPL(sst_byt_dsp_boot); - -int sst_byt_dsp_wait_for_ready(struct device *dev, struct sst_pdata *pdata) -{ - struct sst_byt *byt = pdata->dsp; - int err; - - dev_dbg(byt->dev, "wait for dsp reboot\n"); - - err = wait_event_timeout(byt->boot_wait, byt->boot_complete, - msecs_to_jiffies(IPC_BOOT_MSECS)); - if (err == 0) { - dev_err(byt->dev, "ipc: error DSP boot timeout\n"); - return -EIO; - } - - dev_dbg(byt->dev, "dsp rebooted\n"); - return 0; -} -EXPORT_SYMBOL_GPL(sst_byt_dsp_wait_for_ready); - -int sst_byt_dsp_init(struct device *dev, struct sst_pdata *pdata) -{ - struct sst_byt *byt; - struct sst_fw *byt_sst_fw; - struct sst_byt_fw_init init; - 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) - return -ENOMEM; - - /* start the IPC message thread */ - init_kthread_worker(&byt->kworker); - byt->tx_thread = kthread_run(kthread_worker_fn, - &byt->kworker, "%s", - 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 err_free_msg; - } - 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 dsp_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; - } - - /* show firmware information */ - sst_dsp_inbox_read(byt->dsp, &init, sizeof(init)); - dev_info(byt->dev, "FW version: %02x.%02x.%02x.%02x\n", - init.fw_version.major, init.fw_version.minor, - init.fw_version.build, init.fw_version.type); - dev_info(byt->dev, "Build type: %x\n", init.fw_version.type); - dev_info(byt->dev, "Build date: %s %s\n", - init.build_info.date, init.build_info.time); - - pdata->dsp = byt; - byt->fw = byt_sst_fw; - - return 0; - -boot_err: - sst_dsp_reset(byt->dsp); - sst_fw_free(byt_sst_fw); -fw_err: - sst_dsp_free(byt->dsp); -dsp_err: - kthread_stop(byt->tx_thread); -err_free_msg: - kfree(byt->msg); - - 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); - kthread_stop(byt->tx_thread); - kfree(byt->msg); -} -EXPORT_SYMBOL_GPL(sst_byt_dsp_free); |