This adds the IPC module which uses Inter process mechanism to communicate between driver & SST engine (DSP processor). To communicate between IA processor and DSP, IPC doorbell registers are used. A write to these registers triggers an interrupt to other side. The format of messages and "mailbox" for message payload is defined in intel_lpe_fw_ipc.h

Signed-off-by: Vinod Koul vinod.koul@intel.com Signed-off-by: Harsha Priya priya.harsha@intel.com

new file: sound/pci/sst/intel_sst_fw_ipc.h new file: sound/pci/sst/intel_sst_ipc.c --- sound/pci/sst/intel_sst_fw_ipc.h | 368 ++++++++++++++++++++++++++ sound/pci/sst/intel_sst_ipc.c | 536 ++++++++++++++++++++++++++++++++++++++ 2 files changed, 904 insertions(+), 0 deletions(-) create mode 100644 sound/pci/sst/intel_sst_fw_ipc.h create mode 100644 sound/pci/sst/intel_sst_ipc.c

diff --git a/sound/pci/sst/intel_sst_fw_ipc.h b/sound/pci/sst/intel_sst_fw_ipc.h new file mode 100644 index 0000000..6520e4e --- /dev/null +++ b/sound/pci/sst/intel_sst_fw_ipc.h @@ -0,0 +1,368 @@ +#ifndef __INTEL_SST_FW_IPC_H__ +#define __INTEL_SST_FW_IPC_H__ +/* +* intel_sst_fw_ipc.h - Intel SST Driver for audio engine +* +* Copyright (C) 2008-09 Intel Corporation +* Author: Vinod Koul vinod.koul@intel.com +* Harsha Priya priya.harsha@intel.com +* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +* +* This program is free software; you can redistribute it and/or modify +* it under the terms of the GNU General Public License as published by +* the Free Software Foundation; version 2 of the License. +* +* This program is distributed in the hope that 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. +* +* You should have received a copy of the GNU General Public License along +* with this program; if not, write to the Free Software Foundation, Inc., +* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. +* +* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +* +* This driver exposes the audio engine functionalities to the ALSA +* and middleware. +* This file has definitions shared between the firmware and driver +*/ + +#define MAX_NUM_STREAMS 4 +#define MAX_DBG_RW_BYTES 80 +#define MAX_NUM_SCATTER_BUFFERS 8 +#define MAX_LOOP_BACK_DWORDS 8 +/* IPC base address and mailbox, timestamp offsets */ +#define SST_MAILBOX_SIZE 0x0400 +#define SST_MAILBOX_SEND 0x0000 +#define SST_MAILBOX_RCV 0x0804 +#define SST_TIME_STAMP 0x1800 +#define SST_RESERVED_OFFSET 0x1840 +#define SST_CHEKPOINT_OFFSET 0x1C00 +#define REPLY_MSG 0x80 + +/* Message ID's for IPC messages */ +/* Bits B7: SST or IA/SC ; B6-B4: Msg Category; B3-B0: Msg Type */ + +/* I2L Firmware/Codec Download msgs */ +#define IPC_IA_PREP_LIB_DNLD 0x01 +#define IPC_IA_LIB_DNLD_CMPLT 0x02 + +#define IPC_IA_SET_PMIC_TYPE 0x03 +#define IPC_IA_GET_FW_VERSION 0x04 +#define IPC_IA_GET_FW_BUILD_INF 0x05 +#define IPC_IA_GET_FW_INFO 0x06 + +/* I2L Codec Config/control msgs */ +#define IPC_IA_SET_CODEC_PARAMS 0x10 +#define IPC_IA_GET_CODEC_PARAMS 0x11 +#define IPC_IA_SET_PPP_PARAMS 0x12 +#define IPC_IA_GET_PPP_PARAMS 0x13 +#define IPC_IA_PLAY_FRAMES 0x14 +#define IPC_IA_CAPT_FRAMES 0x15 +#define IPC_IA_PLAY_VOICE 0x16 +#define IPC_IA_CAPT_VOICE 0x17 +#define IPC_IA_DECODE_FRAMES 0x18 + +/* I2L Stream config/control msgs */ +#define IPC_IA_ALLOC_STREAM 0x20 /* Allocate a stream ID */ +#define IPC_IA_FREE_STREAM 0x21 /* Free the stream ID */ +#define IPC_IA_SET_STREAM_PARAMS 0x22 +#define IPC_IA_GET_STREAM_PARAMS 0x23 +#define IPC_IA_PAUSE_STREAM 0x24 +#define IPC_IA_RESUME_STREAM 0x25 +#define IPC_IA_DROP_STREAM 0x26 +#define IPC_IA_DRAIN_STREAM 0x27 /* Short msg with str_id */ +#define IPC_IA_TARGET_DEV_SELECT 0x28 +#define IPC_IA_CONTROL_ROUTING 0x29 + +/* Debug msgs */ +#define IPC_IA_DBG_MEM_READ 0x40 +#define IPC_IA_DBG_MEM_WRITE 0x41 +#define IPC_IA_DBG_LOOP_BACK 0x42 + +/* L2I Firmware/Codec Download msgs */ +#define IPC_IA_FW_INIT_CMPLT 0x81 + +/* L2I Codec Config/control msgs */ +#define IPC_SST_GET_PLAY_FRAMES 0x90 /* Request IA more data */ +#define IPC_SST_GET_CAPT_FRAMES 0x91 /* Request IA more data */ +#define IPC_SST_BUF_UNDER_RUN 0x92 /* PB Under run and stopped */ +#define IPC_SST_BUF_OVER_RUN 0x93 /* CAP Under run and stopped */ +#define IPC_SST_DRAIN_END 0x94 /* PB Drain complete and stopped */ +#define IPC_SST_CHNGE_SSP_PARAMS 0x95 /* PB SSP parameters changed */ +#define IPC_SST_STREAM_PROCESS_FATAL_ERR 0x96/*error in processing a stream*/ +#define IPC_SST_PERIOD_ELAPSED 0x97 /*period elapsed*/ +#define IPC_IA_TARGET_DEV_CHNGD 0x98 /* error in processing a stream */ + +/* L2S messages */ +#define IPC_SC_DDR_LINK_UP 0xC0 +#define IPC_SC_DDR_LINK_DOWN 0xC1 + +/* L2I Error reporting msgs */ +#define IPC_IA_MEM_ALLOC_FAIL 0xE0 +#define IPC_IA_PROC_ERR 0xE1 /* error in processing a + stream can be used by playback and + capture modules */ + +/* L2I Debug msgs*/ +#define IPC_IA_PRINT_STRING 0xF0 + +/* Command Response or Acknowledge message to any IPC message will have + * same message ID and stream ID information which is sent. + * There is no specific Ack message ID. The data field is used as response + * meaning. + */ +enum ackData { + IPC_ACK_SUCCESS = 0, + IPC_ACK_FAILURE +}; + + +enum sst_error_codes { + /* Error code,response to msgId: Description */ + /* Common error codes */ + SST_SUCCESS = 0, /*Success*/ + SST_ERR_INVALID_STREAM_ID, /*Invalid stream ID */ + SST_ERR_INVALID_MSG_ID, /*Invalid message ID */ + SST_ERR_INVALID_STREAM_OP, /*Invalid stream operation request */ + SST_ERR_INVALID_PARAMS, /*Invalid params */ + SST_ERR_INVALID_CODEC, /*Invalid codec type */ + SST_ERR_INVALID_MEDIA_TYPE, /*Invalid media type */ + SST_ERR_STREAM_ERR, /*ANY: Stream control or config or + processing error */ + + /* IPC specific error codes */ + SST_IPC_ERR_CALL_BACK_NOT_REGD, /*Call back for msg not regd*/ + SST_IPC_ERR_STREAM_NOT_ALLOCATED, /*Stream is not allocated */ + SST_IPC_ERR_STREAM_ALLOC_FAILED, /*ALLOC:Stream alloc failed*/ + SST_IPC_ERR_GET_STREAM_FAILED, /*ALLOC:Get stream id failed*/ + SST_ERR_MOD_NOT_AVAIL, /* SET/GET: Mod(AEC/AGC/ALC) not available */ + SST_ERR_MOD_DNLD_RQD, /* SET/GET: Mod(AEC/AGC/ALC) download required*/ + SST_ERR_STREAM_STOPPED, /* ANY: Stream is in stopped state */ + SST_ERR_STREAM_IN_USE, /* ANY: Stream is already in use */ + + /* Capture specific error codes*/ + SST_CAP_ERR_INCMPLTE_CAPTURE_MSG,/*ANY:Incomplete message */ + SST_CAP_ERR_CAPTURE_FAIL, /*ANY:Capture op failed */ + SST_CAP_ERR_GET_DDR_NEW_SGLIST, /*AR: Meena */ + SST_CAP_ERR_UNDER_RUN, /* lack of input data */ + SST_CAP_ERR_OVERFLOW, /* lack of output space */ + + /* Playback specific error codes*/ + SST_PB_ERR_INCMPLTE_PLAY_MSG, /* ANY: Incomplete message */ + SST_PB_ERR_PLAY_FAIL, /* ANY: Playback operation failed */ + SST_PB_ERR_GET_DDR_NEW_SGLIST, /* AR: Ashok */ + + /* Codec manager specific error codes*/ + SST_LIB_ERR_LIB_DNLD_REQUIRED, /* ALLOC: Codec download required */ + SST_LIB_ERR_LIB_NOT_SUPPORTED, /* Library is not supported */ + + /* Library manager specific error codes*/ + SST_SCC_ERR_PREP_DNLD_FAILED, /* Failed to prepare for codec download */ + SST_SCC_ERR_LIB_DNLD_RES_FAILED, /* Lib download resume failed */ + /* Scheduler specific error codes*/ + SST_SCH_ERR_FAIL, /* REPORT: */ + + /* DMA specific error codes */ + SST_DMA_ERR_NO_CHNL_AVAILABLE, /* DMA Ch not available*/ + SST_DMA_ERR_INVALID_INPUT_PARAMS, /* Invalid input params */ + SST_DMA_ERR_CHNL_ALREADY_SUSPENDED, /* Ch is suspended */ + SST_DMA_ERR_CHNL_ALREADY_STARTED, /* Ch already started */ + SST_DMA_ERR_CHNL_NOT_ENABLED, /* Ch not enabled */ + SST_DMA_ERR_TRANSFER_FAILED, /* Transfer failed */ + SST_SSP_ERR_ALREADY_ENABLED, /* REPORT: SSP already enabled*/ + SST_SSP_ERR_ALREADY_DISABLED, /* REPORT: SSP already disabled*/ + SST_SSP_ERR_NOT_INITIALIZED, + + /* Other error codes */ + SST_ERR_MOD_INIT_FAIL, /* Firmware Module init failed */ + + /* FW init error codes */ + SST_RDR_ERR_IO_DEV_SEL_NOT_ALLOWED, + SST_RDR_ERR_ROUTE_ALREADY_STARTED, + SST_RDR_PREP_CODEC_DNLD_FAILED, + + /* Memory debug error codes */ + SST_ERR_DBG_MEM_READ_FAIL, + SST_ERR_DBG_MEM_WRITE_FAIL, + + +}; + +enum dbg_mem_data_type { + /* Data type of debug read/write */ + DATA_TYPE_U32, + DATA_TYPE_U16, + DATA_TYPE_U8, +}; + +/* CAUTION NOTE: All IPC message body must be multiple of 32 bits.*/ + +/* IPC Header */ +union ipc_header { + struct { + u32 msg_id:8; /* Message ID - Max 256 Message Types */ + u32 str_id:3; /* Undefined for SC communication */ + u32 large:1; /* Large Message if large = 1 */ + u32 reserved:4;/* Reserved for future use */ + u32 data:14; /* Ack/Info for msg, size of msg in Mailbox */ + u32 done:1; /* bit 30 */ + u32 busy:1; /* bit 31 */ + } part; + u32 full; +} __attribute__ ((packed)); + +struct ipc_header_fw_init { + struct snd_sst_fw_version fw_version;/* Firmware version details*/ + u16 result; /* Fw init result */ + u8 module_id; /* Module ID in case of error */ + u8 debug_info; /* Debug info from Module ID in case of fail */ +} __attribute__ ((packed)); + +/* Firmware build info */ +struct sst_fw_build_info { + unsigned char date[16]; /* Firmware build date */ + unsigned char time[16]; /* Firmware build time */ +} __attribute__ ((packed)); + +/* Address and size info of a frame buffer in DDR */ +struct sst_address_info { + u32 addr; /* Address at IA */ + u32 size; /* Size of the buffer */ +} __attribute__ ((packed)); + +/* Time stamp */ +struct snd_sst_tstamp { + u64 samples_processed; + u64 samples_rendered; + u32 sampling_frequency; +}; + +/* Frame info to play or capture */ +struct sst_frame_info { + u16 num_entries; /* number of entries to follow */ + u16 rsrvd; + struct sst_address_info addr[MAX_NUM_SCATTER_BUFFERS]; +} __attribute__ ((packed)); + +/* Frames info for decode */ +struct snd_sst_decode_info { + struct snd_sst_dbufs frames_in; + struct snd_sst_dbufs frames_out; +} __attribute__ ((packed)); +/* SST to IA print debug message*/ +struct ipc_sst_ia_print_params { + u32 string_size; /* Max value is 160 */ + u8 prt_string[160]; /* Null terminated Char string */ +} __attribute__ ((packed)); +/* Voice data message */ +struct snd_sst_voice_data { + u16 num_bytes; /* Number of valid voice data bytes */ + u8 pcm_wd_size; /* 0=8 bit, 1=16 bit 2=32 bit*/ + u8 reserved; /* Reserved */ + u8 voice_data_buf[0]; /* Voice data buffer in bytes, little endian */ +} __attribute__ ((packed)); + +/* SST to IA memory read debug message */ +struct ipc_sst_ia_dbg_mem_rw { + u16 num_bytes; /* Maximum of MAX_DBG_RW_BYTES */ + u16 data_type; /* enum: dbg_mem_data_type */ + u32 address; /* Memory address of data memory of data_type */ + u8 rw_bytes[MAX_DBG_RW_BYTES];/* Maximum of 64 bytes can be RW */ +} __attribute__ ((packed)); + +struct ipc_sst_ia_dbg_loop_back { + u16 num_dwords; /* Maximum of MAX_DBG_RW_BYTES */ + u16 increment_val;/* Increments dwords by this value, 0- no increment */ + u32 lpbk_dwords[MAX_LOOP_BACK_DWORDS];/* Maximum of 8 dwords loopback */ +} __attribute__ ((packed)); + +/* Stream type params struture for Alloc stream */ +struct snd_sst_str_type { + u8 codec_type; /* Codec type */ + u8 str_type; /* 1 = voice 2 = music */ + u8 operation; /* Playback or Capture */ + u8 protected_str; /* 0=Non DRM, 1=DRM */ + u8 pvt_id; /* Driver Private ID */ + u8 reserved; /* Reserved */ + u16 result; /* Result used for acknowledgment */ +} __attribute__ ((packed)); + +/* Library info structure */ +struct module_info { + u32 lib_version; + u32 lib_type; + u32 media_type; + u8 lib_name[12]; + u32 lib_caps; + unsigned char b_date[16]; /* Lib build date */ + unsigned char b_time[16]; /* Lib build time */ +} __attribute__ ((packed)); + +/* Library slot info */ +struct lib_slot_info { + u8 slot_num; /* 1 or 2*/ + u8 reserved1; + u16 reserved2; + u32 iram_size; /* slot size in IRAM */ + u32 dram_size; /* slot size in DRAM */ + u32 iram_offset; /* starting offset of slot in IRAM */ + u32 dram_offset; /* starting offset of slot in DRAM */ +} __attribute__ ((packed)); + +struct snd_sst_lib_download { + struct module_info lib_info; /* library info type, capabilities etc*/ + struct lib_slot_info slot_info; /* slot info to be downloaded */ + u32 mod_entry_pt; +}; + +struct snd_sst_lib_download_info { + struct snd_sst_lib_download dload_lib; + u16 result; /* Result used for acknowledgment */ + u8 pvt_id; /*Private ID*/ + u8 reserved; /*for alignment*/ +}; + +/* Alloc stream params structure */ +struct snd_sst_alloc_params { + struct snd_sst_str_type str_type; + struct snd_sst_stream_params stream_params; +}; + +struct snd_sst_fw_get_stream_params { + struct snd_sst_str_type str_type; + struct snd_sst_params codec_params; + struct snd_sst_pmic_config pcm_params; +}; + +/* Alloc stream response message */ +struct snd_sst_alloc_response { + struct snd_sst_str_type str_type; /* Stream type for allocation*/ + struct snd_sst_lib_download lib_dnld; /*Valid only for codec dnld*/ +}; + +/*struct ipc_msg_body { + union { + CODEC_PARAM_STRUCTURES; + PPP_PARAM_STRUCTURES; + struct snd_sst_alloc_params alloc_params; + struct snd_sst_alloc_response alloc_response; + struct snd_sst_stream_params stream_params; + struct sst_frame_info frames_info; + struct ipc_sst_ia_print_params print_params; + struct ipc_sst_ia_dbg_mem_rw dbg_mem_rw; + struct ipc_sst_ia_dbg_loop_back loop_back; + struct pmic_pcm_params ssp_params; + } u; +};*/ + + + +struct ipc_post { + struct list_head node; + union ipc_header header; /* driver specific */ + char *mailbox_data; +}; + +#endif /*__INTEL_SST_FW_IPC_H__*/ diff --git a/sound/pci/sst/intel_sst_ipc.c b/sound/pci/sst/intel_sst_ipc.c new file mode 100644 index 0000000..98b4031 --- /dev/null +++ b/sound/pci/sst/intel_sst_ipc.c @@ -0,0 +1,536 @@ +/* + * intel_sst_ipc.c - Intel SST Driver for audio engine + * + * Copyright (C) 2008-09 Intel Corporation + * Authors: Vinod Koul vinod.koul@intel.com + * Harsha Priya priya.harsha@intel.com + * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that 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. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + * + * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + * + * This file defines all ipc functions + */ + +#include <linux/cdev.h> +#include <linux/pci.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/syscalls.h> +#include <linux/file.h> +#include <linux/interrupt.h> +#include <linux/list.h> +#include <linux/workqueue.h> +#include <linux/mutex.h> +#include <linux/firmware.h> +#include <sound/intel_sst.h> +#include <sound/intel_sst_ioctl.h> +#include "intel_sst_fw_ipc.h" +#include "intel_sst_common.h" +#include "intel_sst_pvt.h" + +void sst_send_loop_test(int loop_no) +{ + struct ipc_post *msg = NULL; + struct ipc_sst_ia_dbg_loop_back loop_msg; + static int large_num; + + sst_dbg("Loop testing %d \n", loop_no); + + if (large_num >= 4) { + sst_dbg("Loop testing complete.....\n"); + return; + } + if (loop_no >= 4) { + /*large loop*/ + large_num++; + sst_dbg("Large msg \n"); + if (0 != sst_create_large_msg(&msg)) + return; + + loop_msg.increment_val = 1; + loop_msg.lpbk_dwords[0] = 0x11111111; + loop_msg.lpbk_dwords[1] = 0x22222222; + loop_msg.lpbk_dwords[2] = 0x33333333; + loop_msg.lpbk_dwords[3] = 0x44444444; + loop_msg.num_dwords = 4; + sst_fill_header(&msg->header, IPC_IA_DBG_LOOP_BACK, 1, loop_no); + msg->header.part.data = sizeof(u32) + sizeof(loop_msg); + memcpy(msg->mailbox_data, &msg->header, sizeof(u32)); + memcpy(msg->mailbox_data + sizeof(u32), + &loop_msg, sizeof(loop_msg)); + } else { + /*short loop*/ + sst_dbg("Loop Short msg \n"); + if (0 != sst_create_short_msg(&msg)) + return; + sst_fill_header(&msg->header, IPC_IA_DBG_LOOP_BACK, 0, loop_no); + } + list_add_tail(&msg->node, &sst_ops->ipc_dispatch_list); + sst_post_message(&sst_ops->ipc_post_msg_wq); + return; +} + +void sst_send_pmic_type(void) +{ + struct ipc_post *msg = NULL; + + sst_dbg("...called\n"); + + if (0 != sst_create_short_msg(&msg)) + return; + + sst_fill_header(&msg->header, IPC_IA_SET_PMIC_TYPE, 0, 0); + msg->header.part.data = sst_ops->pmic_vendor; + list_add_tail(&msg->node, &sst_ops->ipc_dispatch_list); + sst_post_message(&sst_ops->ipc_post_msg_wq); + return; +} + +void sst_get_fw_version(void) +{ + struct ipc_post *msg = NULL; + + sst_dbg("...called\n"); + + if (0 != sst_create_short_msg(&msg)) + return; + + sst_fill_header(&msg->header, IPC_IA_GET_FW_VERSION, 0, 0); + list_add_tail(&msg->node, &sst_ops->ipc_dispatch_list); + sst_post_message(&sst_ops->ipc_post_msg_wq); + if (0 != sst_create_short_msg(&msg)) + return; + + sst_fill_header(&msg->header, IPC_IA_GET_FW_BUILD_INF, 0, 0); + list_add_tail(&msg->node, &sst_ops->ipc_dispatch_list); + sst_post_message(&sst_ops->ipc_post_msg_wq); + return; +} + +/** +* sst_post_message - Posts message to SST +* @work: Pointer to work structure +* +* This function is called by any component in driver which +* wants to send an IPC message. This will post message only if +* busy bit is free +*/ +void sst_post_message(struct work_struct *work) +{ + struct ipc_post *msg; + union ipc_header header; + union interrupt_reg imr; + imr.full = 0; + + sst_dbg("..called \n"); + mutex_lock(&sst_ops->list_lock); + /*check list*/ + if (0 != list_empty(&sst_ops->ipc_dispatch_list)) { + /*list is empty, mask imr*/ + sst_dbg(" Empty msg queue... masking \n"); + imr.full = readl(sst_ops->shim + SST_IMRX); + imr.part.done_interrupt = 1; + writel(imr.full, sst_ops->shim + SST_IMRX); + mutex_unlock(&sst_ops->list_lock); + return; + } + + /*check busy bit*/ + header.full = readl(sst_ops->shim + SST_IPCX); + if (1 == header.part.busy) { + /*busy, unmask*/ + sst_dbg("Busy not free... unmasking\n"); + imr.full = readl(sst_ops->shim + SST_IMRX); + imr.part.done_interrupt = 0; + writel(imr.full, sst_ops->shim + SST_IMRX); + mutex_unlock(&sst_ops->list_lock); + return; + } + /*copy msg from list*/ + msg = list_entry(sst_ops->ipc_dispatch_list.next, + struct ipc_post, node); + list_del(&msg->node); + sst_dbg("Post message: header = %x\n", msg->header.full); + sst_dbg("size: = %x\n", msg->header.part.data); + if (1 == msg->header.part.large) + memcpy_toio(sst_ops->mailbox + SST_MAILBOX_SEND, + msg->mailbox_data, msg->header.part.data); + writel(msg->header.full, sst_ops->shim + SST_IPCX); + mutex_unlock(&sst_ops->list_lock); + + kfree(msg->mailbox_data); + kfree(msg); + sst_dbg("...done\n"); + return; +} + +void sst_clear_interrupt(void) +{ + union interrupt_reg isr; + union interrupt_reg imr; + union ipc_header clear_ipc; + + sst_dbg("sst clearing interrupt \n"); + imr.full = readl(sst_ops->shim + SST_IMRX); + isr.full = readl(sst_ops->shim + SST_ISRX); + /* write 1 to clear */; + isr.part.busy_interrupt = 1; + writel(isr.full, sst_ops->shim + SST_ISRX); + /*Set IA done bit*/ + clear_ipc.full = readl(sst_ops->shim + SST_IPCD); + clear_ipc.part.busy = 0; + clear_ipc.part.done = 1; + clear_ipc.part.data = IPC_ACK_SUCCESS; + writel(clear_ipc.full, sst_ops->shim + SST_IPCD); + /*un mask busy interrupt*/ + imr.part.busy_interrupt = 0; + writel(imr.full, sst_ops->shim + SST_IMRX); +} + +/** +* sst_process_message - Processes message from SST +* @work: Pointer to work structure +* +* This function is scheduled by ISR +* It take a msg from process_queue and does action based on msg +*/ +void sst_process_message(struct work_struct *work) +{ + struct sst_ipc_msg_wq *msg = + container_of(work, struct sst_ipc_msg_wq, wq); + int str_id = msg->header.part.str_id; + + sst_dbg("called \n"); + + /*based on msg in list call respective handler*/ + switch (msg->header.part.msg_id) { + case IPC_SST_BUF_UNDER_RUN: + case IPC_SST_BUF_OVER_RUN: + if (sst_validate_strid(str_id) != 0) { + sst_err("stream id %d invalid\n", str_id); + break; + } + sst_err("Buffer under/overrun for %d\n", + msg->header.part.str_id); + sst_dbg("Got Underrun & not to send data...ignore\n"); + break; + + case IPC_SST_GET_PLAY_FRAMES: + { + struct stream_info *stream ; + + if (sst_validate_strid(str_id) != 0) { + sst_err("stream id %d invalid\n", str_id); + break; + } + /*call sst_play_frame*/ + stream = &sst_ops->streams[str_id]; + sst_dbg("sst_play_frames for %d\n", msg->header.part.str_id); + mutex_lock(&sst_ops->streams[str_id].lock); + sst_play_frame(msg->header.part.str_id); + mutex_unlock(&sst_ops->streams[str_id].lock); + break; + } + + case IPC_SST_PERIOD_ELAPSED: + { + struct snd_sst_tstamp fw_tstamp = {0,}; + struct stream_info *stream ; + + if (sst_validate_strid(str_id) != 0) { + sst_err("stream id %d invalid\n", str_id); + break; + } + stream = &sst_ops->streams[str_id]; + + sst_dbg("Period elapsed \n"); + memcpy_fromio(&fw_tstamp, + ((void *)(sst_ops->mailbox + SST_TIME_STAMP) + + (str_id * sizeof(fw_tstamp))), + sizeof(fw_tstamp)); + sst_dbg("samples played = %lld\n", fw_tstamp.samples_processed); + sst_dbg("diff in mesg = %d\n", msg->header.part.data); + sst_clear_interrupt(); + if (stream->period_elapsed) + stream->period_elapsed(stream->pcm_substream); + return; + } + + case IPC_SST_GET_CAPT_FRAMES: + /*call sst_capture_frame*/ + if (sst_validate_strid(str_id) != 0) { + sst_err("stream id %d invalid\n", str_id); + break; + } + sst_dbg("sst_capture_frames for %d\n", msg->header.part.str_id); + mutex_lock(&sst_ops->streams[str_id].lock); + if (sst_ops->streams[str_id].ops == STREAM_OPS_CAPTURE && + sst_ops->streams[str_id].mmapped == false && + sst_ops->streams[str_id].codec != + SST_CODEC_TYPE_PCM) { + sst_dbg("waking up block for copy...\n"); + sst_ops->streams[str_id].data_blk.ret_code = 0; + sst_ops->streams[str_id].data_blk.condition = true; + sst_ops->streams[str_id].data_blk.on = false; + wake_up(&sst_ops->wait_queue); + } else + sst_capture_frame(msg->header.part.str_id); + mutex_unlock(&sst_ops->streams[str_id].lock); + break; + + case IPC_IA_PRINT_STRING: + sst_dbg("been asked to print something by fw\n"); + /*TBD*/ + break; + + case IPC_IA_FW_INIT_CMPLT: { + /*send next data to FW*/ + struct ipc_header_fw_init *init = + (struct ipc_header_fw_init *)msg->mailbox; + + sst_dbg("*** FW Init msg came*** \n"); + if (0 == init->result) { + sst_ops->sst_state = SST_FW_RUNNING; + sst_info("FW Version %x.%x \n", + init->fw_version.major, init->fw_version.minor); + sst_info("Build No %x Type %x \n", + init->fw_version.build, init->fw_version.type); +#ifdef SND_LOOP_TEST + sst_send_loop_test(0); +#endif + sst_send_pmic_type(); + sst_get_fw_version(); + } else { + sst_ops->sst_state = SST_ERROR; + sst_dbg("FW Init failed, Error %x\n", init->result); + sst_dbg("FW Init failed, Module %x, Debug Info %x \n", + init->module_id, init->debug_info); + } + sst_dbg("Waking up... open\n"); + sst_wake_up_alloc_block(sst_ops, 0xFF, 0, NULL); + break; + } + + case IPC_SST_STREAM_PROCESS_FATAL_ERR: + if (sst_validate_strid(str_id) != 0) { + sst_err("stream id %d invalid\n", str_id); + break; + } + sst_err(" codec fatal error %x for stream %d... \n", + msg->header.full, msg->header.part.str_id); + sst_err("Dropping the stream \n"); + sst_drop_stream(msg->header.part.str_id); + break; + + default: + /*Illegal case*/ + sst_err("Unhandled case msg_id %x message %x\n", + msg->header.part.msg_id, msg->header.full); + } + sst_clear_interrupt(); + return; +} + +/** +* sst_process_reply - Processes reply message from SST +* @work: Pointer to work structure +* +* This function is scheduled by ISR +* It take a reply msg from response_queue and +* does action based on msg +*/ +void sst_process_reply(struct work_struct *work) +{ + struct sst_ipc_msg_wq *msg = + container_of(work, struct sst_ipc_msg_wq, wq); + int str_id = msg->header.part.str_id; + struct stream_info *str_info = NULL; + + sst_dbg("called for %x \n", msg->header.full); + + switch (msg->header.part.msg_id) { + case IPC_IA_DROP_STREAM: + case IPC_IA_PAUSE_STREAM: + case IPC_IA_RESUME_STREAM: + case IPC_IA_SET_STREAM_PARAMS: + if (0 == msg->header.part.data) { + sst_dbg("Msg succedded %x \n", msg->header.part.msg_id); + } else { + sst_err("Msg %x reply error %x \n", + msg->header.part.msg_id, + msg->header.part.data); + } + if (sst_validate_strid(str_id) != 0) { + sst_err("stream id %d invalid\n", str_id); + break; + } + + str_info = &sst_ops->streams[str_id]; + str_info->ctrl_blk.ret_code = msg->header.part.data; + if (str_info->ctrl_blk.on == true) { + str_info->ctrl_blk.condition = true; + wake_up(&sst_ops->wait_queue); + } + break; + + case IPC_IA_FREE_STREAM: + if (0 == msg->header.part.data) { + sst_dbg("Stream %d freed\n", str_id); + } else { + sst_err("Free for %d returned error %x\n", + str_id, msg->header.part.data); + } + break; + case IPC_IA_GET_STREAM_PARAMS: { + if (sst_validate_strid(str_id) != 0) { + sst_err("stream id %d invalid\n", str_id); + break; + } + if (0 == msg->header.part.data) { + struct snd_sst_stream_params *params = NULL; + params = kzalloc(sizeof(*params), GFP_KERNEL); + if (NULL == params) { + sst_err("mem allocation failed\n"); + break; + } + memcpy(params, &msg->mailbox, sizeof(*params)); + str_info = &sst_ops->streams[str_id]; + str_info->get_parameters = params; + } else { + sst_err("Msg %x reply error %x \n", + msg->header.part.msg_id, msg->header.part.data); + } + break; + } + + case IPC_IA_ALLOC_STREAM: { + /*map to stream, call play*/ + struct snd_sst_alloc_response *resp = + (struct snd_sst_alloc_response *)msg->mailbox; + if (0 != resp->str_type.result) { + /*error case*/ + struct snd_sst_alloc_response *lib = NULL; + sst_err("error alloc stream = %x \n", + resp->str_type.result); + if (resp->str_type.result == + SST_LIB_ERR_LIB_DNLD_REQUIRED) { + lib = kzalloc(sizeof(*lib), GFP_ATOMIC); + if (NULL == lib) { + sst_err("mem allocation failed \n"); + break; + } + memcpy(lib, msg->mailbox, sizeof(*lib)); + /*library needs to be downloaded*/ + sst_dbg("Codec Download required \n"); + } + sst_wake_up_alloc_block(sst_ops, resp->str_type.pvt_id, + (-resp->str_type.result), lib); + break; + } + sst_alloc_stream_response(str_id, &resp->str_type); + break; + } + + case IPC_IA_DBG_LOOP_BACK: + /*Debug loop back msg*/ + sst_dbg("Loop back came \n"); + if (0 != msg->header.part.data) + sst_dbg("Possible error if not large \n"); + sst_dbg("Loop ID: %d\n", str_id); + if (msg->header.part.large) { + struct ipc_sst_ia_dbg_loop_back *loop_msg = + (struct ipc_sst_ia_dbg_loop_back *)msg->mailbox; + int i; + sst_dbg("Got large loop back: Words %d\n", + loop_msg->num_dwords); + for (i = 0; i < loop_msg->num_dwords; i++) { + sst_dbg("Loop Word %d = %d \n", i, + loop_msg->lpbk_dwords[i]); + } + } + sst_send_loop_test((str_id + 1)); + break; + + case IPC_IA_PLAY_FRAMES: + case IPC_IA_CAPT_FRAMES: + if (sst_validate_strid(str_id) != 0) { + sst_err("stream id %d invalid\n", str_id); + break; + } + sst_dbg("Ack for play/capt frames recived \n"); + break; + + case IPC_IA_PREP_LIB_DNLD: { + struct snd_sst_str_type *str_type = + (struct snd_sst_str_type *)msg->mailbox; + sst_dbg("Prep Lib download %x\n", msg->header.part.msg_id); + if (0 != str_type->result) + sst_err("Error in prep lib download 0x%x\n", + str_type->result); + else + sst_dbg("Need to download codec now...\n"); + str_type->result = 0; + sst_wake_up_alloc_block(sst_ops, str_type->pvt_id, + str_type->result, NULL); + break; + } + + case IPC_IA_LIB_DNLD_CMPLT: { + struct snd_sst_lib_download_info *resp = + (struct snd_sst_lib_download_info *)msg->mailbox; + int retval = resp->result; + + sst_dbg("Lib download cmplt %x\n", msg->header.part.msg_id); + if (0 != retval) + sst_err("Error in lib dload %x\n", resp->result); + else { + sst_dbg("Codec download complete...\n"); + sst_info("Dloaded codec Type %d Ver %d Built %s: %s\n", + resp->dload_lib.lib_info.lib_type, + resp->dload_lib.lib_info.lib_version, + resp->dload_lib.lib_info.b_date, + resp->dload_lib.lib_info.b_time); + } + sst_wake_up_alloc_block(sst_ops, resp->pvt_id, retval, NULL); + break; + } + + case IPC_IA_GET_FW_VERSION: { + struct snd_sst_fw_version *version = + (struct snd_sst_fw_version *)msg->mailbox; + sst_info("***LOADED SST FW VERSION*** = %2d.%02d\n", + version->major, version->minor); + sst_info("Build No %x Type %x \n", + version->build, version->type); + break; + } + case IPC_IA_GET_FW_BUILD_INF: { + struct sst_fw_build_info *build = + (struct sst_fw_build_info *)msg->mailbox; + sst_info("Build date %s Time %s\n", + build->date, build->time); + break; + } + + default: + /*Illegal case*/ + sst_err("process reply :default case = %x\n", + msg->header.full); + + } + sst_clear_interrupt(); + return; +}