310 lines
8.1 KiB
C
310 lines
8.1 KiB
C
/*
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* Intel Smart Sound Technology
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*
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* Copyright (C) 2013, Intel Corporation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License version
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* 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#ifndef __SOUND_SOC_SST_DSP_PRIV_H
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#define __SOUND_SOC_SST_DSP_PRIV_H
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#include <linux/kernel.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <linux/firmware.h>
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struct sst_mem_block;
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struct sst_module;
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struct sst_fw;
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/*
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* DSP Operations exported by platform Audio DSP driver.
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*/
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struct sst_ops {
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/* DSP core boot / reset */
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void (*boot)(struct sst_dsp *);
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void (*reset)(struct sst_dsp *);
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/* Shim IO */
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void (*write)(void __iomem *addr, u32 offset, u32 value);
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u32 (*read)(void __iomem *addr, u32 offset);
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void (*write64)(void __iomem *addr, u32 offset, u64 value);
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u64 (*read64)(void __iomem *addr, u32 offset);
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/* DSP I/DRAM IO */
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void (*ram_read)(struct sst_dsp *sst, void *dest, void __iomem *src,
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size_t bytes);
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void (*ram_write)(struct sst_dsp *sst, void __iomem *dest, void *src,
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size_t bytes);
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void (*dump)(struct sst_dsp *);
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/* IRQ handlers */
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irqreturn_t (*irq_handler)(int irq, void *context);
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/* SST init and free */
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int (*init)(struct sst_dsp *sst, struct sst_pdata *pdata);
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void (*free)(struct sst_dsp *sst);
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/* FW module parser/loader */
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int (*parse_fw)(struct sst_fw *sst_fw);
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};
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/*
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* Audio DSP memory offsets and addresses.
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*/
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struct sst_addr {
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u32 lpe_base;
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u32 shim_offset;
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u32 iram_offset;
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u32 dram_offset;
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void __iomem *lpe;
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void __iomem *shim;
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void __iomem *pci_cfg;
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void __iomem *fw_ext;
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};
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/*
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* Audio DSP Mailbox configuration.
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*/
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struct sst_mailbox {
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void __iomem *in_base;
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void __iomem *out_base;
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size_t in_size;
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size_t out_size;
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};
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/*
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* Audio DSP Firmware data types.
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*/
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enum sst_data_type {
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SST_DATA_M = 0, /* module block data */
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SST_DATA_P = 1, /* peristant data (text, data) */
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SST_DATA_S = 2, /* scratch data (usually buffers) */
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};
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/*
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* Audio DSP memory block types.
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*/
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enum sst_mem_type {
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SST_MEM_IRAM = 0,
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SST_MEM_DRAM = 1,
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SST_MEM_ANY = 2,
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SST_MEM_CACHE= 3,
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};
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/*
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* Audio DSP Generic Firmware File.
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*
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* SST Firmware files can consist of 1..N modules. This generic structure is
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* used to manage each firmware file and it's modules regardless of SST firmware
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* type. A SST driver may load multiple FW files.
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*/
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struct sst_fw {
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struct sst_dsp *dsp;
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/* base addresses of FW file data */
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dma_addr_t dmable_fw_paddr; /* physical address of fw data */
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void *dma_buf; /* virtual address of fw data */
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u32 size; /* size of fw data */
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/* lists */
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struct list_head list; /* DSP list of FW */
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struct list_head module_list; /* FW list of modules */
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void *private; /* core doesn't touch this */
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};
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/*
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* Audio DSP Generic Module data.
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*
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* This is used to dsecribe any sections of persistent (text and data) and
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* scratch (buffers) of module data in ADSP memory space.
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*/
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struct sst_module_data {
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enum sst_mem_type type; /* destination memory type */
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enum sst_data_type data_type; /* type of module data */
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u32 size; /* size in bytes */
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int32_t offset; /* offset in FW file */
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u32 data_offset; /* offset in ADSP memory space */
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void *data; /* module data */
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};
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/*
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* Audio DSP Generic Module Template.
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*
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* Used to define and register a new FW module. This data is extracted from
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* FW module header information.
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*/
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struct sst_module_template {
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u32 id;
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u32 entry; /* entry point */
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struct sst_module_data s; /* scratch data */
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struct sst_module_data p; /* peristant data */
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};
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/*
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* Audio DSP Generic Module.
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*
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* Each Firmware file can consist of 1..N modules. A module can span multiple
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* ADSP memory blocks. The simplest FW will be a file with 1 module.
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*/
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struct sst_module {
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struct sst_dsp *dsp;
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struct sst_fw *sst_fw; /* parent FW we belong too */
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/* module configuration */
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u32 id;
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u32 entry; /* module entry point */
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u32 offset; /* module offset in firmware file */
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u32 size; /* module size */
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struct sst_module_data s; /* scratch data */
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struct sst_module_data p; /* peristant data */
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/* runtime */
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u32 usage_count; /* can be unloaded if count == 0 */
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void *private; /* core doesn't touch this */
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/* lists */
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struct list_head block_list; /* Module list of blocks in use */
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struct list_head list; /* DSP list of modules */
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struct list_head list_fw; /* FW list of modules */
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};
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/*
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* SST Memory Block operations.
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*/
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struct sst_block_ops {
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int (*enable)(struct sst_mem_block *block);
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int (*disable)(struct sst_mem_block *block);
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};
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/*
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* SST Generic Memory Block.
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*
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* SST ADP memory has multiple IRAM and DRAM blocks. Some ADSP blocks can be
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* power gated.
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*/
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struct sst_mem_block {
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struct sst_dsp *dsp;
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struct sst_module *module; /* module that uses this block */
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/* block config */
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u32 offset; /* offset from base */
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u32 size; /* block size */
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u32 index; /* block index 0..N */
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enum sst_mem_type type; /* block memory type IRAM/DRAM */
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struct sst_block_ops *ops; /* block operations, if any */
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/* block status */
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enum sst_data_type data_type; /* data type held in this block */
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u32 bytes_used; /* bytes in use by modules */
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void *private; /* generic core does not touch this */
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int users; /* number of modules using this block */
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/* block lists */
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struct list_head module_list; /* Module list of blocks */
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struct list_head list; /* Map list of free/used blocks */
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};
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/*
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* Generic SST Shim Interface.
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*/
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struct sst_dsp {
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/* runtime */
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struct sst_dsp_device *sst_dev;
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spinlock_t spinlock; /* IPC locking */
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struct mutex mutex; /* DSP FW lock */
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struct device *dev;
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void *thread_context;
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int irq;
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u32 id;
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/* list of free and used ADSP memory blocks */
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struct list_head used_block_list;
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struct list_head free_block_list;
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/* operations */
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struct sst_ops *ops;
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/* debug FS */
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struct dentry *debugfs_root;
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/* base addresses */
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struct sst_addr addr;
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/* mailbox */
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struct sst_mailbox mailbox;
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/* SST FW files loaded and their modules */
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struct list_head module_list;
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struct list_head fw_list;
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/* platform data */
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struct sst_pdata *pdata;
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/* DMA FW loading */
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struct sst_dma *dma;
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bool fw_use_dma;
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};
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/* Size optimised DRAM/IRAM memcpy */
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static inline void sst_dsp_write(struct sst_dsp *sst, void *src,
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u32 dest_offset, size_t bytes)
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{
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sst->ops->ram_write(sst, sst->addr.lpe + dest_offset, src, bytes);
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}
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static inline void sst_dsp_read(struct sst_dsp *sst, void *dest,
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u32 src_offset, size_t bytes)
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{
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sst->ops->ram_read(sst, dest, sst->addr.lpe + src_offset, bytes);
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}
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static inline void *sst_dsp_get_thread_context(struct sst_dsp *sst)
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{
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return sst->thread_context;
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}
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/* Create/Free FW files - can contain multiple modules */
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struct sst_fw *sst_fw_new(struct sst_dsp *dsp,
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const struct firmware *fw, void *private);
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void sst_fw_free(struct sst_fw *sst_fw);
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void sst_fw_free_all(struct sst_dsp *dsp);
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/* Create/Free firmware modules */
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struct sst_module *sst_module_new(struct sst_fw *sst_fw,
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struct sst_module_template *template, void *private);
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void sst_module_free(struct sst_module *sst_module);
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int sst_module_insert(struct sst_module *sst_module);
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int sst_module_remove(struct sst_module *sst_module);
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int sst_module_insert_fixed_block(struct sst_module *module,
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struct sst_module_data *data);
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struct sst_module *sst_module_get_from_id(struct sst_dsp *dsp, u32 id);
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/* allocate/free pesistent/scratch memory regions managed by drv */
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struct sst_module *sst_mem_block_alloc_scratch(struct sst_dsp *dsp);
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void sst_mem_block_free_scratch(struct sst_dsp *dsp,
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struct sst_module *scratch);
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int sst_block_module_remove(struct sst_module *module);
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/* Register the DSPs memory blocks - would be nice to read from ACPI */
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struct sst_mem_block *sst_mem_block_register(struct sst_dsp *dsp, u32 offset,
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u32 size, enum sst_mem_type type, struct sst_block_ops *ops, u32 index,
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void *private);
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void sst_mem_block_unregister_all(struct sst_dsp *dsp);
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#endif
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