diff options
Diffstat (limited to 'sound/soc/intel/common')
| -rw-r--r-- | sound/soc/intel/common/Makefile | 7 | ||||
| -rw-r--r-- | sound/soc/intel/common/sst-acpi.c | 286 | ||||
| -rw-r--r-- | sound/soc/intel/common/sst-dsp-priv.h | 373 | ||||
| -rw-r--r-- | sound/soc/intel/common/sst-dsp.c | 420 | ||||
| -rw-r--r-- | sound/soc/intel/common/sst-dsp.h | 285 | ||||
| -rw-r--r-- | sound/soc/intel/common/sst-firmware.c | 1205 | ||||
| -rw-r--r-- | sound/soc/intel/common/sst-ipc.c | 294 | ||||
| -rw-r--r-- | sound/soc/intel/common/sst-ipc.h | 91 |
8 files changed, 2961 insertions, 0 deletions
diff --git a/sound/soc/intel/common/Makefile b/sound/soc/intel/common/Makefile new file mode 100644 index 000000000000..f24154ca4e98 --- /dev/null +++ b/sound/soc/intel/common/Makefile @@ -0,0 +1,7 @@ +snd-soc-sst-dsp-objs := sst-dsp.o sst-firmware.o +snd-soc-sst-acpi-objs := sst-acpi.o +snd-soc-sst-ipc-objs := sst-ipc.o + +obj-$(CONFIG_SND_SOC_INTEL_SST) += snd-soc-sst-dsp.o snd-soc-sst-ipc.o +obj-$(CONFIG_SND_SOC_INTEL_SST_ACPI) += snd-soc-sst-acpi.o + diff --git a/sound/soc/intel/common/sst-acpi.c b/sound/soc/intel/common/sst-acpi.c new file mode 100644 index 000000000000..42f293f9c6e2 --- /dev/null +++ b/sound/soc/intel/common/sst-acpi.c @@ -0,0 +1,286 @@ +/* + * Intel SST loader on ACPI systems + * + * Copyright (C) 2013, Intel Corporation. All rights reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License version + * 2 as published by the Free Software Foundation. + * + * 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. + * + */ + +#include <linux/acpi.h> +#include <linux/device.h> +#include <linux/firmware.h> +#include <linux/module.h> +#include <linux/platform_device.h> + +#include "sst-dsp.h" + +#define SST_LPT_DSP_DMA_ADDR_OFFSET 0x0F0000 +#define SST_WPT_DSP_DMA_ADDR_OFFSET 0x0FE000 +#define SST_LPT_DSP_DMA_SIZE (1024 - 1) + +/* Descriptor for SST ASoC machine driver */ +struct sst_acpi_mach { + /* ACPI ID for the matching machine driver. Audio codec for instance */ + const u8 id[ACPI_ID_LEN]; + /* machine driver name */ + const char *drv_name; + /* firmware file name */ + const char *fw_filename; +}; + +/* Descriptor for setting up SST platform data */ +struct sst_acpi_desc { + const char *drv_name; + struct sst_acpi_mach *machines; + /* Platform resource indexes. Must set to -1 if not used */ + int resindex_lpe_base; + int resindex_pcicfg_base; + int resindex_fw_base; + int irqindex_host_ipc; + int resindex_dma_base; + /* Unique number identifying the SST core on platform */ + int sst_id; + /* DMA only valid when resindex_dma_base != -1*/ + int dma_engine; + int dma_size; +}; + +struct sst_acpi_priv { + struct platform_device *pdev_mach; + struct platform_device *pdev_pcm; + struct sst_pdata sst_pdata; + struct sst_acpi_desc *desc; + struct sst_acpi_mach *mach; +}; + +static void sst_acpi_fw_cb(const struct firmware *fw, void *context) +{ + struct platform_device *pdev = context; + struct device *dev = &pdev->dev; + struct sst_acpi_priv *sst_acpi = platform_get_drvdata(pdev); + struct sst_pdata *sst_pdata = &sst_acpi->sst_pdata; + struct sst_acpi_desc *desc = sst_acpi->desc; + struct sst_acpi_mach *mach = sst_acpi->mach; + + sst_pdata->fw = fw; + if (!fw) { + dev_err(dev, "Cannot load firmware %s\n", mach->fw_filename); + return; + } + + /* register PCM and DAI driver */ + sst_acpi->pdev_pcm = + platform_device_register_data(dev, desc->drv_name, -1, + sst_pdata, sizeof(*sst_pdata)); + if (IS_ERR(sst_acpi->pdev_pcm)) { + dev_err(dev, "Cannot register device %s. Error %d\n", + desc->drv_name, (int)PTR_ERR(sst_acpi->pdev_pcm)); + } + + return; +} + +static acpi_status sst_acpi_mach_match(acpi_handle handle, u32 level, + void *context, void **ret) +{ + *(bool *)context = true; + return AE_OK; +} + +static struct sst_acpi_mach *sst_acpi_find_machine( + struct sst_acpi_mach *machines) +{ + struct sst_acpi_mach *mach; + bool found = false; + + for (mach = machines; mach->id[0]; mach++) + if (ACPI_SUCCESS(acpi_get_devices(mach->id, + sst_acpi_mach_match, + &found, NULL)) && found) + return mach; + + return NULL; +} + +static int sst_acpi_probe(struct platform_device *pdev) +{ + const struct acpi_device_id *id; + struct device *dev = &pdev->dev; + struct sst_acpi_priv *sst_acpi; + struct sst_pdata *sst_pdata; + struct sst_acpi_mach *mach; + struct sst_acpi_desc *desc; + struct resource *mmio; + int ret = 0; + + sst_acpi = devm_kzalloc(dev, sizeof(*sst_acpi), GFP_KERNEL); + if (sst_acpi == NULL) + return -ENOMEM; + + id = acpi_match_device(dev->driver->acpi_match_table, dev); + if (!id) + return -ENODEV; + + desc = (struct sst_acpi_desc *)id->driver_data; + mach = sst_acpi_find_machine(desc->machines); + if (mach == NULL) { + dev_err(dev, "No matching ASoC machine driver found\n"); + return -ENODEV; + } + + sst_pdata = &sst_acpi->sst_pdata; + sst_pdata->id = desc->sst_id; + sst_pdata->dma_dev = dev; + sst_acpi->desc = desc; + sst_acpi->mach = mach; + + sst_pdata->resindex_dma_base = desc->resindex_dma_base; + if (desc->resindex_dma_base >= 0) { + sst_pdata->dma_engine = desc->dma_engine; + sst_pdata->dma_base = desc->resindex_dma_base; + sst_pdata->dma_size = desc->dma_size; + } + + if (desc->irqindex_host_ipc >= 0) + sst_pdata->irq = platform_get_irq(pdev, desc->irqindex_host_ipc); + + if (desc->resindex_lpe_base >= 0) { + mmio = platform_get_resource(pdev, IORESOURCE_MEM, + desc->resindex_lpe_base); + if (mmio) { + sst_pdata->lpe_base = mmio->start; + sst_pdata->lpe_size = resource_size(mmio); + } + } + + if (desc->resindex_pcicfg_base >= 0) { + mmio = platform_get_resource(pdev, IORESOURCE_MEM, + desc->resindex_pcicfg_base); + if (mmio) { + sst_pdata->pcicfg_base = mmio->start; + sst_pdata->pcicfg_size = resource_size(mmio); + } + } + + if (desc->resindex_fw_base >= 0) { + mmio = platform_get_resource(pdev, IORESOURCE_MEM, + desc->resindex_fw_base); + if (mmio) { + sst_pdata->fw_base = mmio->start; + sst_pdata->fw_size = resource_size(mmio); + } + } + + platform_set_drvdata(pdev, sst_acpi); + + /* register machine driver */ + sst_acpi->pdev_mach = + platform_device_register_data(dev, mach->drv_name, -1, + sst_pdata, sizeof(*sst_pdata)); + if (IS_ERR(sst_acpi->pdev_mach)) + return PTR_ERR(sst_acpi->pdev_mach); + + /* continue SST probing after firmware is loaded */ + ret = request_firmware_nowait(THIS_MODULE, true, mach->fw_filename, + dev, GFP_KERNEL, pdev, sst_acpi_fw_cb); + if (ret) + platform_device_unregister(sst_acpi->pdev_mach); + + return ret; +} + +static int sst_acpi_remove(struct platform_device *pdev) +{ + struct sst_acpi_priv *sst_acpi = platform_get_drvdata(pdev); + struct sst_pdata *sst_pdata = &sst_acpi->sst_pdata; + + platform_device_unregister(sst_acpi->pdev_mach); + if (!IS_ERR_OR_NULL(sst_acpi->pdev_pcm)) + platform_device_unregister(sst_acpi->pdev_pcm); + release_firmware(sst_pdata->fw); + + return 0; +} + +static struct sst_acpi_mach haswell_machines[] = { + { "INT33CA", "haswell-audio", "intel/IntcSST1.bin" }, + {} +}; + +static struct sst_acpi_desc sst_acpi_haswell_desc = { + .drv_name = "haswell-pcm-audio", + .machines = haswell_machines, + .resindex_lpe_base = 0, + .resindex_pcicfg_base = 1, + .resindex_fw_base = -1, + .irqindex_host_ipc = 0, + .sst_id = SST_DEV_ID_LYNX_POINT, + .dma_engine = SST_DMA_TYPE_DW, + .resindex_dma_base = SST_LPT_DSP_DMA_ADDR_OFFSET, + .dma_size = SST_LPT_DSP_DMA_SIZE, +}; + +static struct sst_acpi_mach broadwell_machines[] = { + { "INT343A", "broadwell-audio", "intel/IntcSST2.bin" }, + {} +}; + +static struct sst_acpi_desc sst_acpi_broadwell_desc = { + .drv_name = "haswell-pcm-audio", + .machines = broadwell_machines, + .resindex_lpe_base = 0, + .resindex_pcicfg_base = 1, + .resindex_fw_base = -1, + .irqindex_host_ipc = 0, + .sst_id = SST_DEV_ID_WILDCAT_POINT, + .dma_engine = SST_DMA_TYPE_DW, + .resindex_dma_base = SST_WPT_DSP_DMA_ADDR_OFFSET, + .dma_size = SST_LPT_DSP_DMA_SIZE, +}; + +static struct sst_acpi_mach baytrail_machines[] = { + { "10EC5640", "byt-rt5640", "intel/fw_sst_0f28.bin-48kHz_i2s_master" }, + { "193C9890", "byt-max98090", "intel/fw_sst_0f28.bin-48kHz_i2s_master" }, + {} +}; + +static struct sst_acpi_desc sst_acpi_baytrail_desc = { + .drv_name = "baytrail-pcm-audio", + .machines = baytrail_machines, + .resindex_lpe_base = 0, + .resindex_pcicfg_base = 1, + .resindex_fw_base = 2, + .irqindex_host_ipc = 5, + .sst_id = SST_DEV_ID_BYT, + .resindex_dma_base = -1, +}; + +static struct acpi_device_id sst_acpi_match[] = { + { "INT33C8", (unsigned long)&sst_acpi_haswell_desc }, + { "INT3438", (unsigned long)&sst_acpi_broadwell_desc }, + { "80860F28", (unsigned long)&sst_acpi_baytrail_desc }, + { } +}; +MODULE_DEVICE_TABLE(acpi, sst_acpi_match); + +static struct platform_driver sst_acpi_driver = { + .probe = sst_acpi_probe, + .remove = sst_acpi_remove, + .driver = { + .name = "sst-acpi", + .acpi_match_table = ACPI_PTR(sst_acpi_match), + }, +}; +module_platform_driver(sst_acpi_driver); + +MODULE_AUTHOR("Jarkko Nikula <jarkko.nikula@linux.intel.com>"); +MODULE_DESCRIPTION("Intel SST loader on ACPI systems"); +MODULE_LICENSE("GPL v2"); diff --git a/sound/soc/intel/common/sst-dsp-priv.h b/sound/soc/intel/common/sst-dsp-priv.h new file mode 100644 index 000000000000..396d54510350 --- /dev/null +++ b/sound/soc/intel/common/sst-dsp-priv.h @@ -0,0 +1,373 @@ +/* + * Intel Smart Sound Technology + * + * Copyright (C) 2013, Intel Corporation. All rights reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License version + * 2 as published by the Free Software Foundation. + * + * 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. + * + */ + +#ifndef __SOUND_SOC_SST_DSP_PRIV_H +#define __SOUND_SOC_SST_DSP_PRIV_H + +#include <linux/kernel.h> +#include <linux/types.h> +#include <linux/interrupt.h> +#include <linux/firmware.h> + +struct sst_mem_block; +struct sst_module; +struct sst_fw; + +/* do we need to remove or keep */ +#define DSP_DRAM_ADDR_OFFSET 0x400000 + +/* + * DSP Operations exported by platform Audio DSP driver. + */ +struct sst_ops { + /* DSP core boot / reset */ + void (*boot)(struct sst_dsp *); + void (*reset)(struct sst_dsp *); + int (*wake)(struct sst_dsp *); + void (*sleep)(struct sst_dsp *); + void (*stall)(struct sst_dsp *); + + /* Shim IO */ + void (*write)(void __iomem *addr, u32 offset, u32 value); + u32 (*read)(void __iomem *addr, u32 offset); + void (*write64)(void __iomem *addr, u32 offset, u64 value); + u64 (*read64)(void __iomem *addr, u32 offset); + + /* DSP I/DRAM IO */ + void (*ram_read)(struct sst_dsp *sst, void *dest, void __iomem *src, + size_t bytes); + void (*ram_write)(struct sst_dsp *sst, void __iomem *dest, void *src, + size_t bytes); + + void (*dump)(struct sst_dsp *); + + /* IRQ handlers */ + irqreturn_t (*irq_handler)(int irq, void *context); + + /* SST init and free */ + int (*init)(struct sst_dsp *sst, struct sst_pdata *pdata); + void (*free)(struct sst_dsp *sst); + + /* FW module parser/loader */ + int (*parse_fw)(struct sst_fw *sst_fw); +}; + +/* + * Audio DSP memory offsets and addresses. + */ +struct sst_addr { + u32 lpe_base; + u32 shim_offset; + u32 iram_offset; + u32 dram_offset; + u32 dsp_iram_offset; + u32 dsp_dram_offset; + void __iomem *lpe; + void __iomem *shim; + void __iomem *pci_cfg; + void __iomem *fw_ext; +}; + +/* + * Audio DSP Mailbox configuration. + */ +struct sst_mailbox { + void __iomem *in_base; + void __iomem *out_base; + size_t in_size; + size_t out_size; +}; + +/* + * Audio DSP memory block types. + */ +enum sst_mem_type { + SST_MEM_IRAM = 0, + SST_MEM_DRAM = 1, + SST_MEM_ANY = 2, + SST_MEM_CACHE= 3, +}; + +/* + * Audio DSP Generic Firmware File. + * + * SST Firmware files can consist of 1..N modules. This generic structure is + * used to manage each firmware file and it's modules regardless of SST firmware + * type. A SST driver may load multiple FW files. + */ +struct sst_fw { + struct sst_dsp *dsp; + + /* base addresses of FW file data */ + dma_addr_t dmable_fw_paddr; /* physical address of fw data */ + void *dma_buf; /* virtual address of fw data */ + u32 size; /* size of fw data */ + + /* lists */ + struct list_head list; /* DSP list of FW */ + struct list_head module_list; /* FW list of modules */ + + void *private; /* core doesn't touch this */ +}; + +/* + * Audio DSP Generic Module Template. + * + * Used to define and register a new FW module. This data is extracted from + * FW module header information. + */ +struct sst_module_template { + u32 id; + u32 entry; /* entry point */ + u32 scratch_size; + u32 persistent_size; +}; + +/* + * Block Allocator - Used to allocate blocks of DSP memory. + */ +struct sst_block_allocator { + u32 id; + u32 offset; + int size; + enum sst_mem_type type; +}; + +/* + * Runtime Module Instance - A module object can be instanciated multiple + * times within the DSP FW. + */ +struct sst_module_runtime { + struct sst_dsp *dsp; + int id; + struct sst_module *module; /* parent module we belong too */ + + u32 persistent_offset; /* private memory offset */ + void *private; + + struct list_head list; + struct list_head block_list; /* list of blocks used */ +}; + +/* + * Runtime Module Context - The runtime context must be manually stored by the + * driver prior to enter S3 and restored after leaving S3. This should really be + * part of the memory context saved by the enter D3 message IPC ??? + */ +struct sst_module_runtime_context { + dma_addr_t dma_buffer; + u32 *buffer; +}; + +/* + * Audio DSP Module State + */ +enum sst_module_state { + SST_MODULE_STATE_UNLOADED = 0, /* default state */ + SST_MODULE_STATE_LOADED, + SST_MODULE_STATE_INITIALIZED, /* and inactive */ + SST_MODULE_STATE_ACTIVE, +}; + +/* + * Audio DSP Generic Module. + * + * Each Firmware file can consist of 1..N modules. A module can span multiple + * ADSP memory blocks. The simplest FW will be a file with 1 module. A module + * can be instanciated multiple times in the DSP. + */ +struct sst_module { + struct sst_dsp *dsp; + struct sst_fw *sst_fw; /* parent FW we belong too */ + + /* module configuration */ + u32 id; + u32 entry; /* module entry point */ + s32 offset; /* module offset in firmware file */ + u32 size; /* module size */ + u32 scratch_size; /* global scratch memory required */ + u32 persistent_size; /* private memory required */ + enum sst_mem_type type; /* destination memory type */ + u32 data_offset; /* offset in ADSP memory space */ + void *data; /* module data */ + + /* runtime */ + u32 usage_count; /* can be unloaded if count == 0 */ + void *private; /* core doesn't touch this */ + + /* lists */ + struct list_head block_list; /* Module list of blocks in use */ + struct list_head list; /* DSP list of modules */ + struct list_head list_fw; /* FW list of modules */ + struct list_head runtime_list; /* list of runtime module objects*/ + + /* state */ + enum sst_module_state state; +}; + +/* + * SST Memory Block operations. + */ +struct sst_block_ops { + int (*enable)(struct sst_mem_block *block); + int (*disable)(struct sst_mem_block *block); +}; + +/* + * SST Generic Memory Block. + * + * SST ADP memory has multiple IRAM and DRAM blocks. Some ADSP blocks can be + * power gated. + */ +struct sst_mem_block { + struct sst_dsp *dsp; + struct sst_module *module; /* module that uses this block */ + + /* block config */ + u32 offset; /* offset from base */ + u32 size; /* block size */ + u32 index; /* block index 0..N */ + enum sst_mem_type type; /* block memory type IRAM/DRAM */ + struct sst_block_ops *ops; /* block operations, if any */ + + /* block status */ + u32 bytes_used; /* bytes in use by modules */ + void *private; /* generic core does not touch this */ + int users; /* number of modules using this block */ + + /* block lists */ + struct list_head module_list; /* Module list of blocks */ + struct list_head list; /* Map list of free/used blocks */ +}; + +/* + * Generic SST Shim Interface. + */ +struct sst_dsp { + + /* runtime */ + struct sst_dsp_device *sst_dev; + spinlock_t spinlock; /* IPC locking */ + struct mutex mutex; /* DSP FW lock */ + struct device *dev; + struct device *dma_dev; + void *thread_context; + int irq; + u32 id; + + /* list of free and used ADSP memory blocks */ + struct list_head used_block_list; + struct list_head free_block_list; + + /* operations */ + struct sst_ops *ops; + + /* debug FS */ + struct dentry *debugfs_root; + + /* base addresses */ + struct sst_addr addr; + + /* mailbox */ + struct sst_mailbox mailbox; + + /* SST FW files loaded and their modules */ + struct list_head module_list; + struct list_head fw_list; + + /* scratch buffer */ + struct list_head scratch_block_list; + u32 scratch_offset; + u32 scratch_size; + + /* platform data */ + struct sst_pdata *pdata; + + /* DMA FW loading */ + struct sst_dma *dma; + bool fw_use_dma; +}; + +/* Size optimised DRAM/IRAM memcpy */ +static inline void sst_dsp_write(struct sst_dsp *sst, void *src, + u32 dest_offset, size_t bytes) +{ + sst->ops->ram_write(sst, sst->addr.lpe + dest_offset, src, bytes); +} + +static inline void sst_dsp_read(struct sst_dsp *sst, void *dest, + u32 src_offset, size_t bytes) +{ + sst->ops->ram_read(sst, dest, sst->addr.lpe + src_offset, bytes); +} + +static inline void *sst_dsp_get_thread_context(struct sst_dsp *sst) +{ + return sst->thread_context; +} + +/* Create/Free FW files - can contain multiple modules */ +struct sst_fw *sst_fw_new(struct sst_dsp *dsp, + const struct firmware *fw, void *private); +void sst_fw_free(struct sst_fw *sst_fw); +void sst_fw_free_all(struct sst_dsp *dsp); +int sst_fw_reload(struct sst_fw *sst_fw); +void sst_fw_unload(struct sst_fw *sst_fw); + +/* Create/Free firmware modules */ +struct sst_module *sst_module_new(struct sst_fw *sst_fw, + struct sst_module_template *template, void *private); +void sst_module_free(struct sst_module *module); +struct sst_module *sst_module_get_from_id(struct sst_dsp *dsp, u32 id); +int sst_module_alloc_blocks(struct sst_module *module); +int sst_module_free_blocks(struct sst_module *module); + +/* Create/Free firmware module runtime instances */ +struct sst_module_runtime *sst_module_runtime_new(struct sst_module *module, + int id, void *private); +void sst_module_runtime_free(struct sst_module_runtime *runtime); +struct sst_module_runtime *sst_module_runtime_get_from_id( + struct sst_module *module, u32 id); +int sst_module_runtime_alloc_blocks(struct sst_module_runtime *runtime, + int offset); +int sst_module_runtime_free_blocks(struct sst_module_runtime *runtime); +int sst_module_runtime_save(struct sst_module_runtime *runtime, + struct sst_module_runtime_context *context); +int sst_module_runtime_restore(struct sst_module_runtime *runtime, + struct sst_module_runtime_context *context); + +/* generic block allocation */ +int sst_alloc_blocks(struct sst_dsp *dsp, struct sst_block_allocator *ba, + struct list_head *block_list); +int sst_free_blocks(struct sst_dsp *dsp, struct list_head *block_list); + +/* scratch allocation */ +int sst_block_alloc_scratch(struct sst_dsp *dsp); +void sst_block_free_scratch(struct sst_dsp *dsp); + +/* Register the DSPs memory blocks - would be nice to read from ACPI */ +struct sst_mem_block *sst_mem_block_register(struct sst_dsp *dsp, u32 offset, + u32 size, enum sst_mem_type type, struct sst_block_ops *ops, u32 index, + void *private); +void sst_mem_block_unregister_all(struct sst_dsp *dsp); + +/* Create/Free DMA resources */ +int sst_dma_new(struct sst_dsp *sst); +void sst_dma_free(struct sst_dma *dma); + +u32 sst_dsp_get_offset(struct sst_dsp *dsp, u32 offset, + enum sst_mem_type type); +#endif diff --git a/sound/soc/intel/common/sst-dsp.c b/sound/soc/intel/common/sst-dsp.c new file mode 100644 index 000000000000..64e94212d2d2 --- /dev/null +++ b/sound/soc/intel/common/sst-dsp.c @@ -0,0 +1,420 @@ +/* + * Intel Smart Sound Technology (SST) DSP Core Driver + * + * Copyright (C) 2013, Intel Corporation. All rights reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License version + * 2 as published by the Free Software Foundation. + * + * 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. + * + */ + +#include <linux/slab.h> +#include <linux/export.h> +#include <linux/interrupt.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/io.h> + +#include "sst-dsp.h" +#include "sst-dsp-priv.h" + +#define CREATE_TRACE_POINTS +#include <trace/events/intel-sst.h> + +/* Internal generic low-level SST IO functions - can be overidden */ +void sst_shim32_write(void __iomem *addr, u32 offset, u32 value) +{ + writel(value, addr + offset); +} +EXPORT_SYMBOL_GPL(sst_shim32_write); + +u32 sst_shim32_read(void __iomem *addr, u32 offset) +{ + return readl(addr + offset); +} +EXPORT_SYMBOL_GPL(sst_shim32_read); + +void sst_shim32_write64(void __iomem *addr, u32 offset, u64 value) +{ + memcpy_toio(addr + offset, &value, sizeof(value)); +} +EXPORT_SYMBOL_GPL(sst_shim32_write64); + +u64 sst_shim32_read64(void __iomem *addr, u32 offset) +{ + u64 val; + + memcpy_fromio(&val, addr + offset, sizeof(val)); + return val; +} +EXPORT_SYMBOL_GPL(sst_shim32_read64); + +static inline void _sst_memcpy_toio_32(volatile u32 __iomem *dest, + u32 *src, size_t bytes) +{ + int i, words = bytes >> 2; + + for (i = 0; i < words; i++) + writel(src[i], dest + i); +} + +static inline void _sst_memcpy_fromio_32(u32 *dest, + const volatile __iomem u32 *src, size_t bytes) +{ + int i, words = bytes >> 2; + + for (i = 0; i < words; i++) + dest[i] = readl(src + i); +} + +void sst_memcpy_toio_32(struct sst_dsp *sst, + void __iomem *dest, void *src, size_t bytes) +{ + _sst_memcpy_toio_32(dest, src, bytes); +} +EXPORT_SYMBOL_GPL(sst_memcpy_toio_32); + +void sst_memcpy_fromio_32(struct sst_dsp *sst, void *dest, + void __iomem *src, size_t bytes) +{ + _sst_memcpy_fromio_32(dest, src, bytes); +} +EXPORT_SYMBOL_GPL(sst_memcpy_fromio_32); + +/* Public API */ +void sst_dsp_shim_write(struct sst_dsp *sst, u32 offset, u32 value) +{ + unsigned long flags; + + spin_lock_irqsave(&sst->spinlock, flags); + sst->ops->write(sst->addr.shim, offset, value); + spin_unlock_irqrestore(&sst->spinlock, flags); +} +EXPORT_SYMBOL_GPL(sst_dsp_shim_write); + +u32 sst_dsp_shim_read(struct sst_dsp *sst, u32 offset) +{ + unsigned long flags; + u32 val; + + spin_lock_irqsave(&sst->spinlock, flags); + val = sst->ops->read(sst->addr.shim, offset); + spin_unlock_irqrestore(&sst->spinlock, flags); + + return val; +} +EXPORT_SYMBOL_GPL(sst_dsp_shim_read); + +void sst_dsp_shim_write64(struct sst_dsp *sst, u32 offset, u64 value) +{ + unsigned long flags; + + spin_lock_irqsave(&sst->spinlock, flags); + sst->ops->write64(sst->addr.shim, offset, value); + spin_unlock_irqrestore(&sst->spinlock, flags); +} +EXPORT_SYMBOL_GPL(sst_dsp_shim_write64); + +u64 sst_dsp_shim_read64(struct sst_dsp *sst, u32 offset) +{ + unsigned long flags; + u64 val; + + spin_lock_irqsave(&sst->spinlock, flags); + val = sst->ops->read64(sst->addr.shim, offset); + spin_unlock_irqrestore(&sst->spinlock, flags); + + return val; +} +EXPORT_SYMBOL_GPL(sst_dsp_shim_read64); + +void sst_dsp_shim_write_unlocked(struct sst_dsp *sst, u32 offset, u32 value) +{ + sst->ops->write(sst->addr.shim, offset, value); +} +EXPORT_SYMBOL_GPL(sst_dsp_shim_write_unlocked); + +u32 sst_dsp_shim_read_unlocked(struct sst_dsp *sst, u32 offset) +{ + return sst->ops->read(sst->addr.shim, offset); +} +EXPORT_SYMBOL_GPL(sst_dsp_shim_read_unlocked); + +void sst_dsp_shim_write64_unlocked(struct sst_dsp *sst, u32 offset, u64 value) +{ + sst->ops->write64(sst->addr.shim, offset, value); +} +EXPORT_SYMBOL_GPL(sst_dsp_shim_write64_unlocked); + +u64 sst_dsp_shim_read64_unlocked(struct sst_dsp *sst, u32 offset) +{ + return sst->ops->read64(sst->addr.shim, offset); +} +EXPORT_SYMBOL_GPL(sst_dsp_shim_read64_unlocked); + +int sst_dsp_shim_update_bits_unlocked(struct sst_dsp *sst, u32 offset, + u32 mask, u32 value) +{ + bool change; + unsigned int old, new; + u32 ret; + + ret = sst_dsp_shim_read_unlocked(sst, offset); + + old = ret; + new = (old & (~mask)) | (value & mask); + + change = (old != new); + if (change) + sst_dsp_shim_write_unlocked(sst, offset, new); + + return change; +} +EXPORT_SYMBOL_GPL(sst_dsp_shim_update_bits_unlocked); + +int sst_dsp_shim_update_bits64_unlocked(struct sst_dsp *sst, u32 offset, + u64 mask, u64 value) +{ + bool change; + u64 old, new; + + old = sst_dsp_shim_read64_unlocked(sst, offset); + + new = (old & (~mask)) | (value & mask); + + change = (old != new); + if (change) + sst_dsp_shim_write64_unlocked(sst, offset, new); + + return change; +} +EXPORT_SYMBOL_GPL(sst_dsp_shim_update_bits64_unlocked); + +int sst_dsp_shim_update_bits(struct sst_dsp *sst, u32 offset, + u32 mask, u32 value) +{ + unsigned long flags; + bool change; + + spin_lock_irqsave(&sst->spinlock, flags); + change = sst_dsp_shim_update_bits_unlocked(sst, offset, mask, value); + spin_unlock_irqrestore(&sst->spinlock, flags); + return change; +} +EXPORT_SYMBOL_GPL(sst_dsp_shim_update_bits); + +int sst_dsp_shim_update_bits64(struct sst_dsp *sst, u32 offset, + u64 mask, u64 value) +{ + unsigned long flags; + bool change; + + spin_lock_irqsave(&sst->spinlock, flags); + change = sst_dsp_shim_update_bits64_unlocked(sst, offset, mask, value); + spin_unlock_irqrestore(&sst->spinlock, flags); + return change; +} +EXPORT_SYMBOL_GPL(sst_dsp_shim_update_bits64); + +void sst_dsp_dump(struct sst_dsp *sst) +{ + if (sst->ops->dump) + sst->ops->dump(sst); +} +EXPORT_SYMBOL_GPL(sst_dsp_dump); + +void sst_dsp_reset(struct sst_dsp *sst) +{ + if (sst->ops->reset) + sst->ops->reset(sst); +} +EXPORT_SYMBOL_GPL(sst_dsp_reset); + +int sst_dsp_boot(struct sst_dsp *sst) +{ + if (sst->ops->boot) + sst->ops->boot(sst); + + return 0; +} +EXPORT_SYMBOL_GPL(sst_dsp_boot); + +int sst_dsp_wake(struct sst_dsp *sst) +{ + if (sst->ops->wake) + return sst->ops->wake(sst); + + return 0; +} +EXPORT_SYMBOL_GPL(sst_dsp_wake); + +void sst_dsp_sleep(struct sst_dsp *sst) +{ + if (sst->ops->sleep) + sst->ops->sleep(sst); +} +EXPORT_SYMBOL_GPL(sst_dsp_sleep); + +void sst_dsp_stall(struct sst_dsp *sst) +{ + if (sst->ops->stall) + sst->ops->stall(sst); +} +EXPORT_SYMBOL_GPL(sst_dsp_stall); + +void sst_dsp_ipc_msg_tx(struct sst_dsp *dsp, u32 msg) +{ + sst_dsp_shim_write_unlocked(dsp, SST_IPCX, msg | SST_IPCX_BUSY); + trace_sst_ipc_msg_tx(msg); +} +EXPORT_SYMBOL_GPL(sst_dsp_ipc_msg_tx); + +u32 sst_dsp_ipc_msg_rx(struct sst_dsp *dsp) +{ + u32 msg; + + msg = sst_dsp_shim_read_unlocked(dsp, SST_IPCX); + trace_sst_ipc_msg_rx(msg); + + return msg; +} +EXPORT_SYMBOL_GPL(sst_dsp_ipc_msg_rx); + +int sst_dsp_mailbox_init(struct sst_dsp *sst, u32 inbox_offset, size_t inbox_size, + u32 outbox_offset, size_t outbox_size) +{ + sst->mailbox.in_base = sst->addr.lpe + inbox_offset; + sst->mailbox.out_base = sst->addr.lpe + outbox_offset; + sst->mailbox.in_size = inbox_size; + sst->mailbox.out_size = outbox_size; + return 0; +} +EXPORT_SYMBOL_GPL(sst_dsp_mailbox_init); + +void sst_dsp_outbox_write(struct sst_dsp *sst, void *message, size_t bytes) +{ + u32 i; + + trace_sst_ipc_outbox_write(bytes); + + memcpy_toio(sst->mailbox.out_base, message, bytes); + + for (i = 0; i < bytes; i += 4) + trace_sst_ipc_outbox_wdata(i, *(u32 *)(message + i)); +} +EXPORT_SYMBOL_GPL(sst_dsp_outbox_write); + +void sst_dsp_outbox_read(struct sst_dsp *sst, void *message, size_t bytes) +{ + u32 i; + + trace_sst_ipc_outbox_read(bytes); + + memcpy_fromio(message, sst->mailbox.out_base, bytes); + + for (i = 0; i < bytes; i += 4) + trace_sst_ipc_outbox_rdata(i, *(u32 *)(message + i)); +} +EXPORT_SYMBOL_GPL(sst_dsp_outbox_read); + +void sst_dsp_inbox_write(struct sst_dsp *sst, void *message, size_t bytes) +{ + u32 i; + + trace_sst_ipc_inbox_write(bytes); + + memcpy_toio(sst->mailbox.in_base, message, bytes); + + for (i = 0; i < bytes; i += 4) + trace_sst_ipc_inbox_wdata(i, *(u32 *)(message + i)); +} +EXPORT_SYMBOL_GPL(sst_dsp_inbox_write); + +void sst_dsp_inbox_read(struct sst_dsp *sst, void *message, size_t bytes) +{ + u32 i; + + trace_sst_ipc_inbox_read(bytes); + + memcpy_fromio(message, sst->mailbox.in_base, bytes); + + for (i = 0; i < bytes; i += 4) + trace_sst_ipc_inbox_rdata(i, *(u32 *)(message + i)); +} +EXPORT_SYMBOL_GPL(sst_dsp_inbox_read); + +struct sst_dsp *sst_dsp_new(struct device *dev, + struct sst_dsp_device *sst_dev, struct sst_pdata *pdata) +{ + struct sst_dsp *sst; + int err; + + dev_dbg(dev, "initialising audio DSP id 0x%x\n", pdata->id); + + sst = devm_kzalloc(dev, sizeof(*sst), GFP_KERNEL); + if (sst == NULL) + return NULL; + + spin_lock_init(&sst->spinlock); + mutex_init(&sst->mutex); + sst->dev = dev; + sst->dma_dev = pdata->dma_dev; + sst->thread_context = sst_dev->thread_context; + sst->sst_dev = sst_dev; + sst->id = pdata->id; + sst->irq = pdata->irq; + sst->ops = sst_dev->ops; + sst->pdata = pdata; + INIT_LIST_HEAD(&sst->used_block_list); + INIT_LIST_HEAD(&sst->free_block_list); + INIT_LIST_HEAD(&sst->module_list); + INIT_LIST_HEAD(&sst->fw_list); + INIT_LIST_HEAD(&sst->scratch_block_list); + + /* Initialise SST Audio DSP */ + if (sst->ops->init) { + err = sst->ops->init(sst, pdata); + if (err < 0) + return NULL; + } + + /* Register the ISR */ + err = request_threaded_irq(sst->irq, sst->ops->irq_handler, + sst_dev->thread, IRQF_SHARED, "AudioDSP", sst); + if (err) + goto irq_err; + + err = sst_dma_new(sst); + if (err) + dev_warn(dev, "sst_dma_new failed %d\n", err); + + return sst; + +irq_err: + if (sst->ops->free) + sst->ops->free(sst); + + return NULL; +} +EXPORT_SYMBOL_GPL(sst_dsp_new); + +void sst_dsp_free(struct sst_dsp *sst) +{ + free_irq(sst->irq, sst); + if (sst->ops->free) + sst->ops->free(sst); + + sst_dma_free(sst->dma); +} +EXPORT_SYMBOL_GPL(sst_dsp_free); + +/* Module information */ +MODULE_AUTHOR("Liam Girdwood"); +MODULE_DESCRIPTION("Intel SST Core"); +MODULE_LICENSE("GPL v2"); diff --git a/sound/soc/intel/common/sst-dsp.h b/sound/soc/intel/common/sst-dsp.h new file mode 100644 index 000000000000..96aeb2556ad4 --- /dev/null +++ b/sound/soc/intel/common/sst-dsp.h @@ -0,0 +1,285 @@ +/* + * Intel Smart Sound Technology (SST) Core + * + * Copyright (C) 2013, Intel Corporation. All rights reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License version + * 2 as published by the Free Software Foundation. + * + * 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. + * + */ + +#ifndef __SOUND_SOC_SST_DSP_H +#define __SOUND_SOC_SST_DSP_H + +#include <linux/kernel.h> +#include <linux/types.h> +#include <linux/interrupt.h> + +/* SST Device IDs */ +#define SST_DEV_ID_LYNX_POINT 0x33C8 +#define SST_DEV_ID_WILDCAT_POINT 0x3438 +#define SST_DEV_ID_BYT 0x0F28 + +/* Supported SST DMA Devices */ +#define SST_DMA_TYPE_DW 1 + +/* autosuspend delay 5s*/ +#define SST_RUNTIME_SUSPEND_DELAY (5 * 1000) + +/* SST Shim register map + * The register naming can differ between products. Some products also + * contain extra functionality. + */ +#define SST_CSR 0x00 +#define SST_PISR 0x08 +#define SST_PIMR 0x10 +#define SST_ISRX 0x18 +#define SST_ISRD 0x20 +#define SST_IMRX 0x28 +#define SST_IMRD 0x30 +#define SST_IPCX 0x38 /* IPC IA -> SST */ +#define SST_IPCD 0x40 /* IPC SST -> IA */ +#define SST_ISRSC 0x48 +#define SST_ISRLPESC 0x50 +#define SST_IMRSC 0x58 +#define SST_IMRLPESC 0x60 +#define SST_IPCSC 0x68 +#define SST_IPCLPESC 0x70 +#define SST_CLKCTL 0x78 +#define SST_CSR2 0x80 +#define SST_LTRC 0xE0 +#define SST_HMDC 0xE8 + +#define SST_SHIM_BEGIN SST_CSR +#define SST_SHIM_END SST_HDMC + +#define SST_DBGO 0xF0 + +#define SST_SHIM_SIZE 0x100 +#define SST_PWMCTRL 0x1000 + +/* SST Shim Register bits + * The register bit naming can differ between products. Some products also + * contain extra functionality. + */ + +/* CSR / CS */ +#define SST_CSR_RST (0x1 << 1) +#define SST_CSR_SBCS0 (0x1 << 2) +#define SST_CSR_SBCS1 (0x1 << 3) +#define SST_CSR_DCS(x) (x << 4) +#define SST_CSR_DCS_MASK (0x7 << 4) +#define SST_CSR_STALL (0x1 << 10) +#define SST_CSR_S0IOCS (0x1 << 21) +#define SST_CSR_S1IOCS (0x1 << 23) +#define SST_CSR_LPCS (0x1 << 31) +#define SST_CSR_24MHZ_LPCS (SST_CSR_SBCS0 | SST_CSR_SBCS1 | SST_CSR_LPCS) +#define SST_CSR_24MHZ_NO_LPCS (SST_CSR_SBCS0 | SST_CSR_SBCS1) +#define SST_BYT_CSR_RST (0x1 << 0) +#define SST_BYT_CSR_VECTOR_SEL (0x1 << 1) +#define SST_BYT_CSR_STALL (0x1 << 2) +#define SST_BYT_CSR_PWAITMODE (0x1 << 3) + +/* ISRX / ISC */ +#define SST_ISRX_BUSY (0x1 << 1) +#define SST_ISRX_DONE (0x1 << 0) +#define SST_BYT_ISRX_REQUEST (0x1 << 1) + +/* ISRD / ISD */ +#define SST_ISRD_BUSY (0x1 << 1) +#define SST_ISRD_DONE (0x1 << 0) + +/* IMRX / IMC */ +#define SST_IMRX_BUSY (0x1 << 1) +#define SST_IMRX_DONE (0x1 << 0) +#define SST_BYT_IMRX_REQUEST (0x1 << 1) + +/* IMRD / IMD */ +#define SST_IMRD_DONE (0x1 << 0) +#define SST_IMRD_BUSY (0x1 << 1) +#define SST_IMRD_SSP0 (0x1 << 16) +#define SST_IMRD_DMAC0 (0x1 << 21) +#define SST_IMRD_DMAC1 (0x1 << 22) +#define SST_IMRD_DMAC (SST_IMRD_DMAC0 | SST_IMRD_DMAC1) + +/* IPCX / IPCC */ +#define SST_IPCX_DONE (0x1 << 30) +#define SST_IPCX_BUSY (0x1 << 31) +#define SST_BYT_IPCX_DONE ((u64)0x1 << 62) +#define SST_BYT_IPCX_BUSY ((u64)0x1 << 63) + +/* IPCD */ +#define SST_IPCD_DONE (0x1 << 30) +#define SST_IPCD_BUSY (0x1 << 31) +#define SST_BYT_IPCD_DONE ((u64)0x1 << 62) +#define SST_BYT_IPCD_BUSY ((u64)0x1 << 63) + +/* CLKCTL */ +#define SST_CLKCTL_SMOS(x) (x << 24) +#define SST_CLKCTL_MASK (3 << 24) +#define SST_CLKCTL_DCPLCG (1 << 18) +#define SST_CLKCTL_SCOE1 (1 << 17) +#define SST_CLKCTL_SCOE0 (1 << 16) + +/* CSR2 / CS2 */ +#define SST_CSR2_SDFD_SSP0 (1 << 1) +#define SST_CSR2_SDFD_SSP1 (1 << 2) + +/* LTRC */ +#define SST_LTRC_VAL(x) (x << 0) + +/* HMDC */ +#define SST_HMDC_HDDA0(x) (x << 0) +#define SST_HMDC_HDDA1(x) (x << 7) +#define SST_HMDC_HDDA_E0_CH0 1 +#define SST_HMDC_HDDA_E0_CH1 2 +#define SST_HMDC_HDDA_E0_CH2 4 +#define SST_HMDC_HDDA_E0_CH3 8 +#define SST_HMDC_HDDA_E1_CH0 SST_HMDC_HDDA1(SST_HMDC_HDDA_E0_CH0) +#define SST_HMDC_HDDA_E1_CH1 SST_HMDC_HDDA1(SST_HMDC_HDDA_E0_CH1) +#define SST_HMDC_HDDA_E1_CH2 SST_HMDC_HDDA1(SST_HMDC_HDDA_E0_CH2) +#define SST_HMDC_HDDA_E1_CH3 SST_HMDC_HDDA1(SST_HMDC_HDDA_E0_CH3) +#define SST_HMDC_HDDA_E0_ALLCH (SST_HMDC_HDDA_E0_CH0 | SST_HMDC_HDDA_E0_CH1 | \ + SST_HMDC_HDDA_E0_CH2 | SST_HMDC_HDDA_E0_CH3) +#define SST_HMDC_HDDA_E1_ALLCH (SST_HMDC_HDDA_E1_CH0 | SST_HMDC_HDDA_E1_CH1 | \ + SST_HMDC_HDDA_E1_CH2 | SST_HMDC_HDDA_E1_CH3) + + +/* SST Vendor Defined Registers and bits */ +#define SST_VDRTCTL0 0xa0 +#define SST_VDRTCTL1 0xa4 +#define SST_VDRTCTL2 0xa8 +#define SST_VDRTCTL3 0xaC + +/* VDRTCTL0 */ +#define SST_VDRTCL0_D3PGD (1 << 0) +#define SST_VDRTCL0_D3SRAMPGD (1 << 1) +#define SST_VDRTCL0_DSRAMPGE_SHIFT 12 +#define SST_VDRTCL0_DSRAMPGE_MASK (0xfffff << SST_VDRTCL0_DSRAMPGE_SHIFT) +#define SST_VDRTCL0_ISRAMPGE_SHIFT 2 +#define SST_VDRTCL0_ISRAMPGE_MASK (0x3ff << SST_VDRTCL0_ISRAMPGE_SHIFT) + +/* VDRTCTL2 */ +#define SST_VDRTCL2_DCLCGE (1 << 1) +#define SST_VDRTCL2_DTCGE (1 << 10) +#define SST_VDRTCL2_APLLSE_MASK (1 << 31) + +/* PMCS */ +#define SST_PMCS 0x84 +#define SST_PMCS_PS_MASK 0x3 + +struct sst_dsp; + +/* + * SST Device. + * + * This structure is populated by the SST core driver. + */ +struct sst_dsp_device { + /* Mandatory fields */ + struct sst_ops *ops; + irqreturn_t (*thread)(int irq, void *context); + void *thread_context; +}; + +/* + * SST Platform Data. + */ +struct sst_pdata { + /* ACPI data */ + u32 lpe_base; + u32 lpe_size; + u32 pcicfg_base; + u32 pcicfg_size; + u32 fw_base; + u32 fw_size; + int irq; + + /* Firmware */ + const struct firmware *fw; + + /* DMA */ + int resindex_dma_base; /* other fields invalid if equals to -1 */ + u32 dma_base; + u32 dma_size; + int dma_engine; + struct device *dma_dev; + + /* DSP */ + u32 id; + void *dsp; +}; + +/* Initialization */ +struct sst_dsp *sst_dsp_new(struct device *dev, + struct sst_dsp_device *sst_dev, struct sst_pdata *pdata); +void sst_dsp_free(struct sst_dsp *sst); + +/* SHIM Read / Write */ +void sst_dsp_shim_write(struct sst_dsp *sst, u32 offset, u32 value); +u32 sst_dsp_shim_read(struct sst_dsp *sst, u32 offset); +int sst_dsp_shim_update_bits(struct sst_dsp *sst, u32 offset, + u32 mask, u32 value); +void sst_dsp_shim_write64(struct sst_dsp *sst, u32 offset, u64 value); +u64 sst_dsp_shim_read64(struct sst_dsp *sst, u32 offset); +int sst_dsp_shim_update_bits64(struct sst_dsp *sst, u32 offset, + u64 mask, u64 value); + +/* SHIM Read / Write Unlocked for callers already holding sst lock */ +void sst_dsp_shim_write_unlocked(struct sst_dsp *sst, u32 offset, u32 value); +u32 sst_dsp_shim_read_unlocked(struct sst_dsp *sst, u32 offset); +int sst_dsp_shim_update_bits_unlocked(struct sst_dsp *sst, u32 offset, + u32 mask, u32 value); +void sst_dsp_shim_write64_unlocked(struct sst_dsp *sst, u32 offset, u64 value); +u64 sst_dsp_shim_read64_unlocked(struct sst_dsp *sst, u32 offset); +int sst_dsp_shim_update_bits64_unlocked(struct sst_dsp *sst, u32 offset, + u64 mask, u64 value); + +/* Internal generic low-level SST IO functions - can be overidden */ +void sst_shim32_write(void __iomem *addr, u32 offset, u32 value); +u32 sst_shim32_read(void __iomem *addr, u32 offset); +void sst_shim32_write64(void __iomem *addr, u32 offset, u64 value); +u64 sst_shim32_read64(void __iomem *addr, u32 offset); +void sst_memcpy_toio_32(struct sst_dsp *sst, + void __iomem *dest, void *src, size_t bytes); +void sst_memcpy_fromio_32(struct sst_dsp *sst, + void *dest, void __iomem *src, size_t bytes); + +/* DSP reset & boot */ +void sst_dsp_reset(struct sst_dsp *sst); +int sst_dsp_boot(struct sst_dsp *sst); +int sst_dsp_wake(struct sst_dsp *sst); +void sst_dsp_sleep(struct sst_dsp *sst); +void sst_dsp_stall(struct sst_dsp *sst); + +/* DMA */ +int sst_dsp_dma_get_channel(struct sst_dsp *dsp, int chan_id); +void sst_dsp_dma_put_channel(struct sst_dsp *dsp); +int sst_dsp_dma_copyfrom(struct sst_dsp *sst, dma_addr_t dest_addr, + dma_addr_t src_addr, size_t size); +int sst_dsp_dma_copyto(struct sst_dsp *sst, dma_addr_t dest_addr, + dma_addr_t src_addr, size_t size); + +/* Msg IO */ +void sst_dsp_ipc_msg_tx(struct sst_dsp *dsp, u32 msg); +u32 sst_dsp_ipc_msg_rx(struct sst_dsp *dsp); + +/* Mailbox management */ +int sst_dsp_mailbox_init(struct sst_dsp *dsp, u32 inbox_offset, + size_t inbox_size, u32 outbox_offset, size_t outbox_size); +void sst_dsp_inbox_write(struct sst_dsp *dsp, void *message, size_t bytes); +void sst_dsp_inbox_read(struct sst_dsp *dsp, void *message, size_t bytes); +void sst_dsp_outbox_write(struct sst_dsp *dsp, void *message, size_t bytes); +void sst_dsp_outbox_read(struct sst_dsp *dsp, void *message, size_t bytes); +void sst_dsp_mailbox_dump(struct sst_dsp *dsp, size_t bytes); + +/* Debug */ +void sst_dsp_dump(struct sst_dsp *sst); + +#endif diff --git a/sound/soc/intel/common/sst-firmware.c b/sound/soc/intel/common/sst-firmware.c new file mode 100644 index 000000000000..ebcca6dc48d1 --- /dev/null +++ b/sound/soc/intel/common/sst-firmware.c @@ -0,0 +1,1205 @@ +/* + * Intel SST Firmware Loader + * + * Copyright (C) 2013, Intel Corporation. All rights reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License version + * 2 as published by the Free Software Foundation. + * + * 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. + * + */ + +#include <linux/kernel.h> +#include <linux/slab.h> +#include <linux/sched.h> +#include <linux/firmware.h> +#include <linux/export.h> +#include <linux/platform_device.h> +#include <linux/dma-mapping.h> +#include <linux/dmaengine.h> +#include <linux/pci.h> +#include <linux/acpi.h> + +/* supported DMA engine drivers */ +#include <linux/platform_data/dma-dw.h> +#include <linux/dma/dw.h> + +#include <asm/page.h> +#include <asm/pgtable.h> + +#include "sst-dsp.h" +#include "sst-dsp-priv.h" + +#define SST_DMA_RESOURCES 2 +#define SST_DSP_DMA_MAX_BURST 0x3 +#define SST_HSW_BLOCK_ANY 0xffffffff + +#define SST_HSW_MASK_DMA_ADDR_DSP 0xfff00000 + +struct sst_dma { + struct sst_dsp *sst; + + struct dw_dma_chip *chip; + + struct dma_async_tx_descriptor *desc; + struct dma_chan *ch; +}; + +static inline void sst_memcpy32(volatile void __iomem *dest, void *src, u32 bytes) +{ + /* __iowrite32_copy use 32bit size values so divide by 4 */ + __iowrite32_copy((void *)dest, src, bytes/4); +} + +static void sst_dma_transfer_complete(void *arg) +{ + struct sst_dsp *sst = (struct sst_dsp *)arg; + + dev_dbg(sst->dev, "DMA: callback\n"); +} + +static int sst_dsp_dma_copy(struct sst_dsp *sst, dma_addr_t dest_addr, + dma_addr_t src_addr, size_t size) +{ + struct dma_async_tx_descriptor *desc; + struct sst_dma *dma = sst->dma; + + if (dma->ch == NULL) { + dev_err(sst->dev, "error: no DMA channel\n"); + return -ENODEV; + } + + dev_dbg(sst->dev, "DMA: src: 0x%lx dest 0x%lx size %zu\n", + (unsigned long)src_addr, (unsigned long)dest_addr, size); + + desc = dma->ch->device->device_prep_dma_memcpy(dma->ch, dest_addr, + src_addr, size, DMA_CTRL_ACK); + if (!desc){ + dev_err(sst->dev, "error: dma prep memcpy failed\n"); + return -EINVAL; + } + + desc->callback = sst_dma_transfer_complete; + desc->callback_param = sst; + + desc->tx_submit(desc); + dma_wait_for_async_tx(desc); + + return 0; +} + +/* copy to DSP */ +int sst_dsp_dma_copyto(struct sst_dsp *sst, dma_addr_t dest_addr, + dma_addr_t src_addr, size_t size) +{ + return sst_dsp_dma_copy(sst, dest_addr | SST_HSW_MASK_DMA_ADDR_DSP, + src_addr, size); +} +EXPORT_SYMBOL_GPL(sst_dsp_dma_copyto); + +/* copy from DSP */ +int sst_dsp_dma_copyfrom(struct sst_dsp *sst, dma_addr_t dest_addr, + dma_addr_t src_addr, size_t size) +{ + return sst_dsp_dma_copy(sst, dest_addr, + src_addr | SST_HSW_MASK_DMA_ADDR_DSP, size); +} +EXPORT_SYMBOL_GPL(sst_dsp_dma_copyfrom); + +/* remove module from memory - callers hold locks */ +static void block_list_remove(struct sst_dsp *dsp, + struct list_head *block_list) +{ + struct sst_mem_block *block, *tmp; + int err; + + /* disable each block */ + list_for_each_entry(block, block_list, module_list) { + + if (block->ops && block->ops->disable) { + err = block->ops->disable(block); + if (err < 0) + dev_err(dsp->dev, + "error: cant disable block %d:%d\n", + block->type, block->index); + } + } + + /* mark each block as free */ + list_for_each_entry_safe(block, tmp, block_list, module_list) { + list_del(&block->module_list); + list_move(&block->list, &dsp->free_block_list); + dev_dbg(dsp->dev, "block freed %d:%d at offset 0x%x\n", + block->type, block->index, block->offset); + } +} + +/* prepare the memory block to receive data from host - callers hold locks */ +static int block_list_prepare(struct sst_dsp *dsp, + struct list_head *block_list) +{ + struct sst_mem_block *block; + int ret = 0; + + /* enable each block so that's it'e ready for data */ + list_for_each_entry(block, block_list, module_list) { + + if (block->ops && block->ops->enable && !block->users) { + ret = block->ops->enable(block); + if (ret < 0) { + dev_err(dsp->dev, + "error: cant disable block %d:%d\n", + block->type, block->index); + goto err; + } + } + } + return ret; + +err: + list_for_each_entry(block, block_list, module_list) { + if (block->ops && block->ops->disable) + block->ops->disable(block); + } + return ret; +} + +static struct dw_dma_platform_data dw_pdata = { + .is_private = 1, + .chan_allocation_order = CHAN_ALLOCATION_ASCENDING, + .chan_priority = CHAN_PRIORITY_ASCENDING, +}; + +static struct dw_dma_chip *dw_probe(struct device *dev, struct resource *mem, + int irq) +{ + struct dw_dma_chip *chip; + int err; + + chip = devm_kzalloc(dev, sizeof(*chip), GFP_KERNEL); + if (!chip) + return ERR_PTR(-ENOMEM); + + chip->irq = irq; + chip->regs = devm_ioremap_resource(dev, mem); + if (IS_ERR(chip->regs)) + return ERR_CAST(chip->regs); + + err = dma_coerce_mask_and_coherent(dev, DMA_BIT_MASK(31)); + if (err) + return ERR_PTR(err); + + chip->dev = dev; + err = dw_dma_probe(chip, &dw_pdata); + if (err) + return ERR_PTR(err); + + return chip; +} + +static void dw_remove(struct dw_dma_chip *chip) +{ + dw_dma_remove(chip); +} + +static bool dma_chan_filter(struct dma_chan *chan, void *param) +{ + struct sst_dsp *dsp = (struct sst_dsp *)param; + + return chan->device->dev == dsp->dma_dev; +} + +int sst_dsp_dma_get_channel(struct sst_dsp *dsp, int chan_id) +{ + struct sst_dma *dma = dsp->dma; + struct dma_slave_config slave; + dma_cap_mask_t mask; + int ret; + + dma_cap_zero(mask); + dma_cap_set(DMA_SLAVE, mask); + dma_cap_set(DMA_MEMCPY, mask); + + dma->ch = dma_request_channel(mask, dma_chan_filter, dsp); + if (dma->ch == NULL) { + dev_err(dsp->dev, "error: DMA request channel failed\n"); + return -EIO; + } + + memset(&slave, 0, sizeof(slave)); + slave.direction = DMA_MEM_TO_DEV; + slave.src_addr_width = + slave.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES; + slave.src_maxburst = slave.dst_maxburst = SST_DSP_DMA_MAX_BURST; + + ret = dmaengine_slave_config(dma->ch, &slave); + if (ret) { + dev_err(dsp->dev, "error: unable to set DMA slave config %d\n", + ret); + dma_release_channel(dma->ch); + dma->ch = NULL; + } + + return ret; +} +EXPORT_SYMBOL_GPL(sst_dsp_dma_get_channel); + +void sst_dsp_dma_put_channel(struct sst_dsp *dsp) +{ + struct sst_dma *dma = dsp->dma; + + if (!dma->ch) + return; + + dma_release_channel(dma->ch); + dma->ch = NULL; +} +EXPORT_SYMBOL_GPL(sst_dsp_dma_put_channel); + +int sst_dma_new(struct sst_dsp *sst) +{ + struct sst_pdata *sst_pdata = sst->pdata; + struct sst_dma *dma; + struct resource mem; + const char *dma_dev_name; + int ret = 0; + + if (sst->pdata->resindex_dma_base == -1) + /* DMA is not used, return and squelsh error messages */ + return 0; + + /* configure the correct platform data for whatever DMA engine + * is attached to the ADSP IP. */ + switch (sst->pdata->dma_engine) { + case SST_DMA_TYPE_DW: + dma_dev_name = "dw_dmac"; + break; + default: + dev_err(sst->dev, "error: invalid DMA engine %d\n", + sst->pdata->dma_engine); + return -EINVAL; + } + + dma = devm_kzalloc(sst->dev, sizeof(struct sst_dma), GFP_KERNEL); + if (!dma) + return -ENOMEM; + + dma->sst = sst; + + memset(&mem, 0, sizeof(mem)); + + mem.start = sst->addr.lpe_base + sst_pdata->dma_base; + mem.end = sst->addr.lpe_base + sst_pdata->dma_base + sst_pdata->dma_size - 1; + mem.flags = IORESOURCE_MEM; + + /* now register DMA engine device */ + dma->chip = dw_probe(sst->dma_dev, &mem, sst_pdata->irq); + if (IS_ERR(dma->chip)) { + dev_err(sst->dev, "error: DMA device register failed\n"); + ret = PTR_ERR(dma->chip); + goto err_dma_dev; + } + + sst->dma = dma; + sst->fw_use_dma = true; + return 0; + +err_dma_dev: + devm_kfree(sst->dev, dma); + return ret; +} +EXPORT_SYMBOL(sst_dma_new); + +void sst_dma_free(struct sst_dma *dma) +{ + + if (dma == NULL) + return; + + if (dma->ch) + dma_release_channel(dma->ch); + + if (dma->chip) + dw_remove(dma->chip); + +} +EXPORT_SYMBOL(sst_dma_free); + +/* create new generic firmware object */ +struct sst_fw *sst_fw_new(struct sst_dsp *dsp, + const struct firmware *fw, void *private) +{ + struct sst_fw *sst_fw; + int err; + + if (!dsp->ops->parse_fw) + return NULL; + + sst_fw = kzalloc(sizeof(*sst_fw), GFP_KERNEL); + if (sst_fw == NULL) + return NULL; + + sst_fw->dsp = dsp; + sst_fw->private = private; + sst_fw->size = fw->size; + + /* allocate DMA buffer to store FW data */ + sst_fw->dma_buf = dma_alloc_coherent(dsp->dma_dev, sst_fw->size, + &sst_fw->dmable_fw_paddr, GFP_DMA | GFP_KERNEL); + if (!sst_fw->dma_buf) { + dev_err(dsp->dev, "error: DMA alloc failed\n"); + kfree(sst_fw); + return NULL; + } + + /* copy FW data to DMA-able memory */ + memcpy((void *)sst_fw->dma_buf, (void *)fw->data, fw->size); + + if (dsp->fw_use_dma) { + err = sst_dsp_dma_get_channel(dsp, 0); + if (err < 0) + goto chan_err; + } + + /* call core specific FW paser to load FW data into DSP */ + err = dsp->ops->parse_fw(sst_fw); + if (err < 0) { + dev_err(dsp->dev, "error: parse fw failed %d\n", err); + goto parse_err; + } + + if (dsp->fw_use_dma) + sst_dsp_dma_put_channel(dsp); + + mutex_lock(&dsp->mutex); + list_add(&sst_fw->list, &dsp->fw_list); + mutex_unlock(&dsp->mutex); + + return sst_fw; + +parse_err: + if (dsp->fw_use_dma) + sst_dsp_dma_put_channel(dsp); +chan_err: + dma_free_coherent(dsp->dma_dev, sst_fw->size, + sst_fw->dma_buf, + sst_fw->dmable_fw_paddr); + sst_fw->dma_buf = NULL; + kfree(sst_fw); + return NULL; +} +EXPORT_SYMBOL_GPL(sst_fw_new); + +int sst_fw_reload(struct sst_fw *sst_fw) +{ + struct sst_dsp *dsp = sst_fw->dsp; + int ret; + + dev_dbg(dsp->dev, "reloading firmware\n"); + + /* call core specific FW paser to load FW data into DSP */ + ret = dsp->ops->parse_fw(sst_fw); + if (ret < 0) + dev_err(dsp->dev, "error: parse fw failed %d\n", ret); + + return ret; +} +EXPORT_SYMBOL_GPL(sst_fw_reload); + +void sst_fw_unload(struct sst_fw *sst_fw) +{ + struct sst_dsp *dsp = sst_fw->dsp; + struct sst_module *module, *mtmp; + struct sst_module_runtime *runtime, *rtmp; + + dev_dbg(dsp->dev, "unloading firmware\n"); + + mutex_lock(&dsp->mutex); + + /* check module by module */ + list_for_each_entry_safe(module, mtmp, &dsp->module_list, list) { + if (module->sst_fw == sst_fw) { + + /* remove runtime modules */ + list_for_each_entry_safe(runtime, rtmp, &module->runtime_list, list) { + + block_list_remove(dsp, &runtime->block_list); + list_del(&runtime->list); + kfree(runtime); + } + + /* now remove the module */ + block_list_remove(dsp, &module->block_list); + list_del(&module->list); + kfree(module); + } + } + + /* remove all scratch blocks */ + block_list_remove(dsp, &dsp->scratch_block_list); + + mutex_unlock(&dsp->mutex); +} +EXPORT_SYMBOL_GPL(sst_fw_unload); + +/* free single firmware object */ +void sst_fw_free(struct sst_fw *sst_fw) +{ + struct sst_dsp *dsp = sst_fw->dsp; + + mutex_lock(&dsp->mutex); + list_del(&sst_fw->list); + mutex_unlock(&dsp->mutex); + + if (sst_fw->dma_buf) + dma_free_coherent(dsp->dma_dev, sst_fw->size, sst_fw->dma_buf, + sst_fw->dmable_fw_paddr); + kfree(sst_fw); +} +EXPORT_SYMBOL_GPL(sst_fw_free); + +/* free all firmware objects */ +void sst_fw_free_all(struct sst_dsp *dsp) +{ + struct sst_fw *sst_fw, *t; + + mutex_lock(&dsp->mutex); + list_for_each_entry_safe(sst_fw, t, &dsp->fw_list, list) { + + list_del(&sst_fw->list); + dma_free_coherent(dsp->dev, sst_fw->size, sst_fw->dma_buf, + sst_fw->dmable_fw_paddr); + kfree(sst_fw); + } + mutex_unlock(&dsp->mutex); +} +EXPORT_SYMBOL_GPL(sst_fw_free_all); + +/* create a new SST generic module from FW template */ +struct sst_module *sst_module_new(struct sst_fw *sst_fw, + struct sst_module_template *template, void *private) +{ + struct sst_dsp *dsp = sst_fw->dsp; + struct sst_module *sst_module; + + sst_module = kzalloc(sizeof(*sst_module), GFP_KERNEL); + if (sst_module == NULL) + return NULL; + + sst_module->id = template->id; + sst_module->dsp = dsp; + sst_module->sst_fw = sst_fw; + sst_module->scratch_size = template->scratch_size; + sst_module->persistent_size = template->persistent_size; + sst_module->entry = template->entry; + sst_module->state = SST_MODULE_STATE_UNLOADED; + + INIT_LIST_HEAD(&sst_module->block_list); + INIT_LIST_HEAD(&sst_module->runtime_list); + + mutex_lock(&dsp->mutex); + list_add(&sst_module->list, &dsp->module_list); + mutex_unlock(&dsp->mutex); + + return sst_module; +} +EXPORT_SYMBOL_GPL(sst_module_new); + +/* free firmware module and remove from available list */ +void sst_module_free(struct sst_module *sst_module) +{ + struct sst_dsp *dsp = sst_module->dsp; + + mutex_lock(&dsp->mutex); + list_del(&sst_module->list); + mutex_unlock(&dsp->mutex); + + kfree(sst_module); +} +EXPORT_SYMBOL_GPL(sst_module_free); + +struct sst_module_runtime *sst_module_runtime_new(struct sst_module *module, + int id, void *private) +{ + struct sst_dsp *dsp = module->dsp; + struct sst_module_runtime *runtime; + + runtime = kzalloc(sizeof(*runtime), GFP_KERNEL); + if (runtime == NULL) + return NULL; + + runtime->id = id; + runtime->dsp = dsp; + runtime->module = module; + INIT_LIST_HEAD(&runtime->block_list); + + mutex_lock(&dsp->mutex); + list_add(&runtime->list, &module->runtime_list); + mutex_unlock(&dsp->mutex); + + return runtime; +} +EXPORT_SYMBOL_GPL(sst_module_runtime_new); + +void sst_module_runtime_free(struct sst_module_runtime *runtime) +{ + struct sst_dsp *dsp = runtime->dsp; + + mutex_lock(&dsp->mutex); + list_del(&runtime->list); + mutex_unlock(&dsp->mutex); + + kfree(runtime); +} +EXPORT_SYMBOL_GPL(sst_module_runtime_free); + +static struct sst_mem_block *find_block(struct sst_dsp *dsp, + struct sst_block_allocator *ba) +{ + struct sst_mem_block *block; + + list_for_each_entry(block, &dsp->free_block_list, list) { + if (block->type == ba->type && block->offset == ba->offset) + return block; + } + + return NULL; +} + +/* Block allocator must be on block boundary */ +static int block_alloc_contiguous(struct sst_dsp *dsp, + struct sst_block_allocator *ba, struct list_head *block_list) +{ + struct list_head tmp = LIST_HEAD_INIT(tmp); + struct sst_mem_block *block; + u32 block_start = SST_HSW_BLOCK_ANY; + int size = ba->size, offset = ba->offset; + + while (ba->size > 0) { + + block = find_block(dsp, ba); + if (!block) { + list_splice(&tmp, &dsp->free_block_list); + + ba->size = size; + ba->offset = offset; + return -ENOMEM; + } + + list_move_tail(&block->list, &tmp); + ba->offset += block->size; + ba->size -= block->size; + } + ba->size = size; + ba->offset = offset; + + list_for_each_entry(block, &tmp, list) { + + if (block->offset < block_start) + block_start = block->offset; + + list_add(&block->module_list, block_list); + + dev_dbg(dsp->dev, "block allocated %d:%d at offset 0x%x\n", + block->type, block->index, block->offset); + } + + list_splice(&tmp, &dsp->used_block_list); + return 0; +} + +/* allocate first free DSP blocks for data - callers hold locks */ +static int block_alloc(struct sst_dsp *dsp, struct sst_block_allocator *ba, + struct list_head *block_list) +{ + struct sst_mem_block *block, *tmp; + int ret = 0; + + if (ba->size == 0) + return 0; + + /* find first free whole blocks that can hold module */ + list_for_each_entry_safe(block, tmp, &dsp->free_block_list, list) { + + /* ignore blocks with wrong type */ + if (block->type != ba->type) + continue; + + if (ba->size > block->size) + continue; + + ba->offset = block->offset; + block->bytes_used = ba->size % block->size; + list_add(&block->module_list, block_list); + list_move(&block->list, &dsp->used_block_list); + dev_dbg(dsp->dev, "block allocated %d:%d at offset 0x%x\n", + block->type, block->index, block->offset); + return 0; + } + + /* then find free multiple blocks that can hold module */ + list_for_each_entry_safe(block, tmp, &dsp->free_block_list, list) { + + /* ignore blocks with wrong type */ + if (block->type != ba->type) + continue; + + /* do we span > 1 blocks */ + if (ba->size > block->size) { + + /* align ba to block boundary */ + ba->offset = block->offset; + + ret = block_alloc_contiguous(dsp, ba, block_list); + if (ret == 0) + return ret; + + } + } + + /* not enough free block space */ + return -ENOMEM; +} + +int sst_alloc_blocks(struct sst_dsp *dsp, struct sst_block_allocator *ba, + struct list_head *block_list) +{ + int ret; + + dev_dbg(dsp->dev, "block request 0x%x bytes at offset 0x%x type %d\n", + ba->size, ba->offset, ba->type); + + mutex_lock(&dsp->mutex); + + ret = block_alloc(dsp, ba, block_list); + if (ret < 0) { + dev_err(dsp->dev, "error: can't alloc blocks %d\n", ret); + goto out; + } + + /* prepare DSP blocks for module usage */ + ret = block_list_prepare(dsp, block_list); + if (ret < 0) + dev_err(dsp->dev, "error: prepare failed\n"); + +out: + mutex_unlock(&dsp->mutex); + return ret; +} +EXPORT_SYMBOL_GPL(sst_alloc_blocks); + +int sst_free_blocks(struct sst_dsp *dsp, struct list_head *block_list) +{ + mutex_lock(&dsp->mutex); + block_list_remove(dsp, block_list); + mutex_unlock(&dsp->mutex); + return 0; +} +EXPORT_SYMBOL_GPL(sst_free_blocks); + +/* allocate memory blocks for static module addresses - callers hold locks */ +static int block_alloc_fixed(struct sst_dsp *dsp, struct sst_block_allocator *ba, + struct list_head *block_list) +{ + struct sst_mem_block *block, *tmp; + struct sst_block_allocator ba_tmp = *ba; + u32 end = ba->offset + ba->size, block_end; + int err; + + /* only IRAM/DRAM blocks are managed */ + if (ba->type != SST_MEM_IRAM && ba->type != SST_MEM_DRAM) + return 0; + + /* are blocks already attached to this module */ + list_for_each_entry_safe(block, tmp, block_list, module_list) { + + /* ignore blocks with wrong type */ + if (block->type != ba->type) + continue; + + block_end = block->offset + block->size; + + /* find block that holds section */ + if (ba->offset >= block->offset && end <= block_end) + return 0; + + /* does block span more than 1 section */ + if (ba->offset >= block->offset && ba->offset < block_end) { + + /* align ba to block boundary */ + ba_tmp.size -= block_end - ba->offset; + ba_tmp.offset = block_end; + err = block_alloc_contiguous(dsp, &ba_tmp, block_list); + if (err < 0) + return -ENOMEM; + + /* module already owns blocks */ + return 0; + } + } + + /* find first free blocks that can hold section in free list */ + list_for_each_entry_safe(block, tmp, &dsp->free_block_list, list) { + block_end = block->offset + block->size; + + /* ignore blocks with wrong type */ + if (block->type != ba->type) + continue; + + /* find block that holds section */ + if (ba->offset >= block->offset && end <= block_end) { + + /* add block */ + list_move(&block->list, &dsp->used_block_list); + list_add(&block->module_list, block_list); + dev_dbg(dsp->dev, "block allocated %d:%d at offset 0x%x\n", + block->type, block->index, block->offset); + return 0; + } + + /* does block span more than 1 section */ + if (ba->offset >= block->offset && ba->offset < block_end) { + + /* add block */ + list_move(&block->list, &dsp->used_block_list); + list_add(&block->module_list, block_list); + /* align ba to block boundary */ + ba_tmp.size -= block_end - ba->offset; + ba_tmp.offset = block_end; + + err = block_alloc_contiguous(dsp, &ba_tmp, block_list); + if (err < 0) + return -ENOMEM; + + return 0; + } + } + + return -ENOMEM; +} + +/* Load fixed module data into DSP memory blocks */ +int sst_module_alloc_blocks(struct sst_module *module) +{ + struct sst_dsp *dsp = module->dsp; + struct sst_fw *sst_fw = module->sst_fw; + struct sst_block_allocator ba; + int ret; + + memset(&ba, 0, sizeof(ba)); + ba.size = module->size; + ba.type = module->type; + ba.offset = module->offset; + + dev_dbg(dsp->dev, "block request 0x%x bytes at offset 0x%x type %d\n", + ba.size, ba.offset, ba.type); + + mutex_lock(&dsp->mutex); + + /* alloc blocks that includes this section */ + ret = block_alloc_fixed(dsp, &ba, &module->block_list); + if (ret < 0) { + dev_err(dsp->dev, + "error: no free blocks for section at offset 0x%x size 0x%x\n", + module->offset, module->size); + mutex_unlock(&dsp->mutex); + return -ENOMEM; + } + + /* prepare DSP blocks for module copy */ + ret = block_list_prepare(dsp, &module->block_list); + if (ret < 0) { + dev_err(dsp->dev, "error: fw module prepare failed\n"); + goto err; + } + + /* copy partial module data to blocks */ + if (dsp->fw_use_dma) { + ret = sst_dsp_dma_copyto(dsp, + dsp->addr.lpe_base + module->offset, + sst_fw->dmable_fw_paddr + module->data_offset, + module->size); + if (ret < 0) { + dev_err(dsp->dev, "error: module copy failed\n"); + goto err; + } + } else + sst_memcpy32(dsp->addr.lpe + module->offset, module->data, + module->size); + + mutex_unlock(&dsp->mutex); + return ret; + +err: + block_list_remove(dsp, &module->block_list); + mutex_unlock(&dsp->mutex); + return ret; +} +EXPORT_SYMBOL_GPL(sst_module_alloc_blocks); + +/* Unload entire module from DSP memory */ +int sst_module_free_blocks(struct sst_module *module) +{ + struct sst_dsp *dsp = module->dsp; + + mutex_lock(&dsp->mutex); + block_list_remove(dsp, &module->block_list); + mutex_unlock(&dsp->mutex); + return 0; +} +EXPORT_SYMBOL_GPL(sst_module_free_blocks); + +int sst_module_runtime_alloc_blocks(struct sst_module_runtime *runtime, + int offset) +{ + struct sst_dsp *dsp = runtime->dsp; + struct sst_module *module = runtime->module; + struct sst_block_allocator ba; + int ret; + + if (module->persistent_size == 0) + return 0; + + memset(&ba, 0, sizeof(ba)); + ba.size = module->persistent_size; + ba.type = SST_MEM_DRAM; + + mutex_lock(&dsp->mutex); + + /* do we need to allocate at a fixed address ? */ + if (offset != 0) { + + ba.offset = offset; + + dev_dbg(dsp->dev, "persistent fixed block request 0x%x bytes type %d offset 0x%x\n", + ba.size, ba.type, ba.offset); + + /* alloc blocks that includes this section */ + ret = block_alloc_fixed(dsp, &ba, &runtime->block_list); + + } else { + dev_dbg(dsp->dev, "persistent block request 0x%x bytes type %d\n", + ba.size, ba.type); + + /* alloc blocks that includes this section */ + ret = block_alloc(dsp, &ba, &runtime->block_list); + } + if (ret < 0) { + dev_err(dsp->dev, + "error: no free blocks for runtime module size 0x%x\n", + module->persistent_size); + mutex_unlock(&dsp->mutex); + return -ENOMEM; + } + runtime->persistent_offset = ba.offset; + + /* prepare DSP blocks for module copy */ + ret = block_list_prepare(dsp, &runtime->block_list); + if (ret < 0) { + dev_err(dsp->dev, "error: runtime block prepare failed\n"); + goto err; + } + + mutex_unlock(&dsp->mutex); + return ret; + +err: + block_list_remove(dsp, &module->block_list); + mutex_unlock(&dsp->mutex); + return ret; +} +EXPORT_SYMBOL_GPL(sst_module_runtime_alloc_blocks); + +int sst_module_runtime_free_blocks(struct sst_module_runtime *runtime) +{ + struct sst_dsp *dsp = runtime->dsp; + + mutex_lock(&dsp->mutex); + block_list_remove(dsp, &runtime->block_list); + mutex_unlock(&dsp->mutex); + return 0; +} +EXPORT_SYMBOL_GPL(sst_module_runtime_free_blocks); + +int sst_module_runtime_save(struct sst_module_runtime *runtime, + struct sst_module_runtime_context *context) +{ + struct sst_dsp *dsp = runtime->dsp; + struct sst_module *module = runtime->module; + int ret = 0; + + dev_dbg(dsp->dev, "saving runtime %d memory at 0x%x size 0x%x\n", + runtime->id, runtime->persistent_offset, + module->persistent_size); + + context->buffer = dma_alloc_coherent(dsp->dma_dev, + module->persistent_size, + &context->dma_buffer, GFP_DMA | GFP_KERNEL); + if (!context->buffer) { + dev_err(dsp->dev, "error: DMA context alloc failed\n"); + return -ENOMEM; + } + + mutex_lock(&dsp->mutex); + + if (dsp->fw_use_dma) { + + ret = sst_dsp_dma_get_channel(dsp, 0); + if (ret < 0) + goto err; + + ret = sst_dsp_dma_copyfrom(dsp, context->dma_buffer, + dsp->addr.lpe_base + runtime->persistent_offset, + module->persistent_size); + sst_dsp_dma_put_channel(dsp); + if (ret < 0) { + dev_err(dsp->dev, "error: context copy failed\n"); + goto err; + } + } else + sst_memcpy32(context->buffer, dsp->addr.lpe + + runtime->persistent_offset, + module->persistent_size); + +err: + mutex_unlock(&dsp->mutex); + return ret; +} +EXPORT_SYMBOL_GPL(sst_module_runtime_save); + +int sst_module_runtime_restore(struct sst_module_runtime *runtime, + struct sst_module_runtime_context *context) +{ + struct sst_dsp *dsp = runtime->dsp; + struct sst_module *module = runtime->module; + int ret = 0; + + dev_dbg(dsp->dev, "restoring runtime %d memory at 0x%x size 0x%x\n", + runtime->id, runtime->persistent_offset, + module->persistent_size); + + mutex_lock(&dsp->mutex); + + if (!context->buffer) { + dev_info(dsp->dev, "no context buffer need to restore!\n"); + goto err; + } + + if (dsp->fw_use_dma) { + + ret = sst_dsp_dma_get_channel(dsp, 0); + if (ret < 0) + goto err; + + ret = sst_dsp_dma_copyto(dsp, + dsp->addr.lpe_base + runtime->persistent_offset, + context->dma_buffer, module->persistent_size); + sst_dsp_dma_put_channel(dsp); + if (ret < 0) { + dev_err(dsp->dev, "error: module copy failed\n"); + goto err; + } + } else + sst_memcpy32(dsp->addr.lpe + runtime->persistent_offset, + context->buffer, module->persistent_size); + + dma_free_coherent(dsp->dma_dev, module->persistent_size, + context->buffer, context->dma_buffer); + context->buffer = NULL; + +err: + mutex_unlock(&dsp->mutex); + return ret; +} +EXPORT_SYMBOL_GPL(sst_module_runtime_restore); + +/* register a DSP memory block for use with FW based modules */ +struct sst_mem_block *sst_mem_block_register(struct sst_dsp *dsp, u32 offset, + u32 size, enum sst_mem_type type, struct sst_block_ops *ops, u32 index, + void *private) +{ + struct sst_mem_block *block; + + block = kzalloc(sizeof(*block), GFP_KERNEL); + if (block == NULL) + return NULL; + + block->offset = offset; + block->size = size; + block->index = index; + block->type = type; + block->dsp = dsp; + block->private = private; + block->ops = ops; + + mutex_lock(&dsp->mutex); + list_add(&block->list, &dsp->free_block_list); + mutex_unlock(&dsp->mutex); + + return block; +} +EXPORT_SYMBOL_GPL(sst_mem_block_register); + +/* unregister all DSP memory blocks */ +void sst_mem_block_unregister_all(struct sst_dsp *dsp) +{ + struct sst_mem_block *block, *tmp; + + mutex_lock(&dsp->mutex); + + /* unregister used blocks */ + list_for_each_entry_safe(block, tmp, &dsp->used_block_list, list) { + list_del(&block->list); + kfree(block); + } + + /* unregister free blocks */ + list_for_each_entry_safe(block, tmp, &dsp->free_block_list, list) { + list_del(&block->list); + kfree(block); + } + + mutex_unlock(&dsp->mutex); +} +EXPORT_SYMBOL_GPL(sst_mem_block_unregister_all); + +/* allocate scratch buffer blocks */ +int sst_block_alloc_scratch(struct sst_dsp *dsp) +{ + struct sst_module *module; + struct sst_block_allocator ba; + int ret; + + mutex_lock(&dsp->mutex); + + /* calculate required scratch size */ + dsp->scratch_size = 0; + list_for_each_entry(module, &dsp->module_list, list) { + dev_dbg(dsp->dev, "module %d scratch req 0x%x bytes\n", + module->id, module->scratch_size); + if (dsp->scratch_size < module->scratch_size) + dsp->scratch_size = module->scratch_size; + } + + dev_dbg(dsp->dev, "scratch buffer required is 0x%x bytes\n", + dsp->scratch_size); + + if (dsp->scratch_size == 0) { + dev_info(dsp->dev, "no modules need scratch buffer\n"); + mutex_unlock(&dsp->mutex); + return 0; + } + + /* allocate blocks for module scratch buffers */ + dev_dbg(dsp->dev, "allocating scratch blocks\n"); + + ba.size = dsp->scratch_size; + ba.type = SST_MEM_DRAM; + + /* do we need to allocate at fixed offset */ + if (dsp->scratch_offset != 0) { + + dev_dbg(dsp->dev, "block request 0x%x bytes type %d at 0x%x\n", + ba.size, ba.type, ba.offset); + + ba.offset = dsp->scratch_offset; + + /* alloc blocks that includes this section */ + ret = block_alloc_fixed(dsp, &ba, &dsp->scratch_block_list); + + } else { + dev_dbg(dsp->dev, "block request 0x%x bytes type %d\n", + ba.size, ba.type); + + ba.offset = 0; + ret = block_alloc(dsp, &ba, &dsp->scratch_block_list); + } + if (ret < 0) { + dev_err(dsp->dev, "error: can't alloc scratch blocks\n"); + mutex_unlock(&dsp->mutex); + return ret; + } + + ret = block_list_prepare(dsp, &dsp->scratch_block_list); + if (ret < 0) { + dev_err(dsp->dev, "error: scratch block prepare failed\n"); + mutex_unlock(&dsp->mutex); + return ret; + } + + /* assign the same offset of scratch to each module */ + dsp->scratch_offset = ba.offset; + mutex_unlock(&dsp->mutex); + return dsp->scratch_size; +} +EXPORT_SYMBOL_GPL(sst_block_alloc_scratch); + +/* free all scratch blocks */ +void sst_block_free_scratch(struct sst_dsp *dsp) +{ + mutex_lock(&dsp->mutex); + block_list_remove(dsp, &dsp->scratch_block_list); + mutex_unlock(&dsp->mutex); +} +EXPORT_SYMBOL_GPL(sst_block_free_scratch); + +/* get a module from it's unique ID */ +struct sst_module *sst_module_get_from_id(struct sst_dsp *dsp, u32 id) +{ + struct sst_module *module; + + mutex_lock(&dsp->mutex); + + list_for_each_entry(module, &dsp->module_list, list) { + if (module->id == id) { + mutex_unlock(&dsp->mutex); + return module; + } + } + + mutex_unlock(&dsp->mutex); + return NULL; +} +EXPORT_SYMBOL_GPL(sst_module_get_from_id); + +struct sst_module_runtime *sst_module_runtime_get_from_id( + struct sst_module *module, u32 id) +{ + struct sst_module_runtime *runtime; + struct sst_dsp *dsp = module->dsp; + + mutex_lock(&dsp->mutex); + + list_for_each_entry(runtime, &module->runtime_list, list) { + if (runtime->id == id) { + mutex_unlock(&dsp->mutex); + return runtime; + } + } + + mutex_unlock(&dsp->mutex); + return NULL; +} +EXPORT_SYMBOL_GPL(sst_module_runtime_get_from_id); + +/* returns block address in DSP address space */ +u32 sst_dsp_get_offset(struct sst_dsp *dsp, u32 offset, + enum sst_mem_type type) +{ + switch (type) { + case SST_MEM_IRAM: + return offset - dsp->addr.iram_offset + + dsp->addr.dsp_iram_offset; + case SST_MEM_DRAM: + return offset - dsp->addr.dram_offset + + dsp->addr.dsp_dram_offset; + default: + return 0; + } +} +EXPORT_SYMBOL_GPL(sst_dsp_get_offset); diff --git a/sound/soc/intel/common/sst-ipc.c b/sound/soc/intel/common/sst-ipc.c new file mode 100644 index 000000000000..4b62a553823c --- /dev/null +++ b/sound/soc/intel/common/sst-ipc.c @@ -0,0 +1,294 @@ +/* + * Intel SST generic IPC Support + * + * Copyright (C) 2015, Intel Corporation. All rights reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License version + * 2 as published by the Free Software Foundation. + * + * 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. + * + */ + +#include <linux/types.h> +#include <linux/kernel.h> +#include <linux/list.h> +#include <linux/wait.h> +#include <linux/module.h> +#include <linux/spinlock.h> +#include <linux/device.h> +#include <linux/slab.h> +#include <linux/workqueue.h> +#include <linux/sched.h> +#include <linux/delay.h> +#include <linux/platform_device.h> +#include <linux/kthread.h> +#include <sound/asound.h> + +#include "sst-dsp.h" +#include "sst-dsp-priv.h" +#include "sst-ipc.h" + +/* IPC message timeout (msecs) */ +#define IPC_TIMEOUT_MSECS 300 + +#define IPC_EMPTY_LIST_SIZE 8 + +/* locks held by caller */ +static struct ipc_message *msg_get_empty(struct sst_generic_ipc *ipc) +{ + struct ipc_message *msg = NULL; + + if (!list_empty(&ipc->empty_list)) { + msg = list_first_entry(&ipc->empty_list, struct ipc_message, + list); + list_del(&msg->list); + } + + return msg; +} + +static int tx_wait_done(struct sst_generic_ipc *ipc, + struct ipc_message *msg, void *rx_data) +{ + unsigned long flags; + int ret; + + /* wait for DSP completion (in all cases atm inc pending) */ + ret = wait_event_timeout(msg->waitq, msg->complete, + msecs_to_jiffies(IPC_TIMEOUT_MSECS)); + + spin_lock_irqsave(&ipc->dsp->spinlock, flags); + if (ret == 0) { + if (ipc->ops.shim_dbg != NULL) + ipc->ops.shim_dbg(ipc, "message timeout"); + + list_del(&msg->list); + 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, &ipc->empty_list); + spin_unlock_irqrestore(&ipc->dsp->spinlock, flags); + return ret; +} + +static int ipc_tx_message(struct sst_generic_ipc *ipc, u64 header, + void *tx_data, size_t tx_bytes, void *rx_data, + size_t rx_bytes, int wait) +{ + struct ipc_message *msg; + unsigned long flags; + + spin_lock_irqsave(&ipc->dsp->spinlock, flags); + + msg = msg_get_empty(ipc); + if (msg == NULL) { + spin_unlock_irqrestore(&ipc->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->pending = false; + msg->complete = false; + + if ((tx_bytes) && (ipc->ops.tx_data_copy != NULL)) + ipc->ops.tx_data_copy(msg, tx_data, tx_bytes); + + list_add_tail(&msg->list, &ipc->tx_list); + spin_unlock_irqrestore(&ipc->dsp->spinlock, flags); + + queue_kthread_work(&ipc->kworker, &ipc->kwork); + + if (wait) + return tx_wait_done(ipc, msg, rx_data); + else + return 0; +} + +static int msg_empty_list_init(struct sst_generic_ipc *ipc) +{ + int i; + + ipc->msg = kzalloc(sizeof(struct ipc_message) * + IPC_EMPTY_LIST_SIZE, GFP_KERNEL); + if (ipc->msg == NULL) + return -ENOMEM; + + for (i = 0; i < IPC_EMPTY_LIST_SIZE; i++) { + init_waitqueue_head(&ipc->msg[i].waitq); + list_add(&ipc->msg[i].list, &ipc->empty_list); + } + + return 0; +} + +static void ipc_tx_msgs(struct kthread_work *work) +{ + struct sst_generic_ipc *ipc = + container_of(work, struct sst_generic_ipc, kwork); + struct ipc_message *msg; + unsigned long flags; + u64 ipcx; + + spin_lock_irqsave(&ipc->dsp->spinlock, flags); + + if (list_empty(&ipc->tx_list) || ipc->pending) { + spin_unlock_irqrestore(&ipc->dsp->spinlock, flags); + return; + } + + /* if the DSP is busy, we will TX messages after IRQ. + * also postpone if we are in the middle of procesing completion irq*/ + ipcx = sst_dsp_shim_read_unlocked(ipc->dsp, SST_IPCX); + if (ipcx & (SST_IPCX_BUSY | SST_IPCX_DONE)) { + spin_unlock_irqrestore(&ipc->dsp->spinlock, flags); + return; + } + + msg = list_first_entry(&ipc->tx_list, struct ipc_message, list); + list_move(&msg->list, &ipc->rx_list); + + if (ipc->ops.tx_msg != NULL) + ipc->ops.tx_msg(ipc, msg); + + spin_unlock_irqrestore(&ipc->dsp->spinlock, flags); +} + +int sst_ipc_tx_message_wait(struct sst_generic_ipc *ipc, u64 header, + void *tx_data, size_t tx_bytes, void *rx_data, size_t rx_bytes) +{ + return ipc_tx_message(ipc, header, tx_data, tx_bytes, + rx_data, rx_bytes, 1); +} +EXPORT_SYMBOL_GPL(sst_ipc_tx_message_wait); + +int sst_ipc_tx_message_nowait(struct sst_generic_ipc *ipc, u64 header, + void *tx_data, size_t tx_bytes) +{ + return ipc_tx_message(ipc, header, tx_data, tx_bytes, + NULL, 0, 0); +} +EXPORT_SYMBOL_GPL(sst_ipc_tx_message_nowait); + +struct ipc_message *sst_ipc_reply_find_msg(struct sst_generic_ipc *ipc, + u64 header) +{ + struct ipc_message *msg; + u64 mask; + + if (ipc->ops.reply_msg_match != NULL) + header = ipc->ops.reply_msg_match(header, &mask); + + if (list_empty(&ipc->rx_list)) { + dev_err(ipc->dev, "error: rx list empty but received 0x%llx\n", + header); + return NULL; + } + + list_for_each_entry(msg, &ipc->rx_list, list) { + if ((msg->header & mask) == header) + return msg; + } + + return NULL; +} +EXPORT_SYMBOL_GPL(sst_ipc_reply_find_msg); + +/* locks held by caller */ +void sst_ipc_tx_msg_reply_complete(struct sst_generic_ipc *ipc, + struct ipc_message *msg) +{ + msg->complete = true; + + if (!msg->wait) + list_add_tail(&msg->list, &ipc->empty_list); + else + wake_up(&msg->waitq); +} +EXPORT_SYMBOL_GPL(sst_ipc_tx_msg_reply_complete); + +void sst_ipc_drop_all(struct sst_generic_ipc *ipc) +{ + struct ipc_message *msg, *tmp; + unsigned long flags; + int tx_drop_cnt = 0, rx_drop_cnt = 0; + + /* drop all TX and Rx messages before we stall + reset DSP */ + spin_lock_irqsave(&ipc->dsp->spinlock, flags); + + list_for_each_entry_safe(msg, tmp, &ipc->tx_list, list) { + list_move(&msg->list, &ipc->empty_list); + tx_drop_cnt++; + } + + list_for_each_entry_safe(msg, tmp, &ipc->rx_list, list) { + list_move(&msg->list, &ipc->empty_list); + rx_drop_cnt++; + } + + spin_unlock_irqrestore(&ipc->dsp->spinlock, flags); + + if (tx_drop_cnt || rx_drop_cnt) + dev_err(ipc->dev, "dropped IPC msg RX=%d, TX=%d\n", + tx_drop_cnt, rx_drop_cnt); +} +EXPORT_SYMBOL_GPL(sst_ipc_drop_all); + +int sst_ipc_init(struct sst_generic_ipc *ipc) +{ + int ret; + + INIT_LIST_HEAD(&ipc->tx_list); + INIT_LIST_HEAD(&ipc->rx_list); + INIT_LIST_HEAD(&ipc->empty_list); + init_waitqueue_head(&ipc->wait_txq); + + ret = msg_empty_list_init(ipc); + if (ret < 0) + return -ENOMEM; + + /* start the IPC message thread */ + init_kthread_worker(&ipc->kworker); + ipc->tx_thread = kthread_run(kthread_worker_fn, + &ipc->kworker, "%s", + dev_name(ipc->dev)); + if (IS_ERR(ipc->tx_thread)) { + dev_err(ipc->dev, "error: failed to create message TX task\n"); + ret = PTR_ERR(ipc->tx_thread); + kfree(ipc->msg); + return ret; + } + + init_kthread_work(&ipc->kwork, ipc_tx_msgs); + return 0; +} +EXPORT_SYMBOL_GPL(sst_ipc_init); + +void sst_ipc_fini(struct sst_generic_ipc *ipc) +{ + if (ipc->tx_thread) + kthread_stop(ipc->tx_thread); + + if (ipc->msg) + kfree(ipc->msg); +} +EXPORT_SYMBOL_GPL(sst_ipc_fini); + +/* Module information */ +MODULE_AUTHOR("Jin Yao"); +MODULE_DESCRIPTION("Intel SST IPC generic"); +MODULE_LICENSE("GPL v2"); diff --git a/sound/soc/intel/common/sst-ipc.h b/sound/soc/intel/common/sst-ipc.h new file mode 100644 index 000000000000..125ea451a373 --- /dev/null +++ b/sound/soc/intel/common/sst-ipc.h @@ -0,0 +1,91 @@ +/* + * Intel SST generic IPC Support + * + * Copyright (C) 2015, Intel Corporation. All rights reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License version + * 2 as published by the Free Software Foundation. + * + * 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. + * + */ + +#ifndef __SST_GENERIC_IPC_H +#define __SST_GENERIC_IPC_H + +#include <linux/types.h> +#include <linux/kernel.h> +#include <linux/wait.h> +#include <linux/list.h> +#include <linux/workqueue.h> +#include <linux/sched.h> +#include <linux/kthread.h> + +#define IPC_MAX_MAILBOX_BYTES 256 + +struct ipc_message { + struct list_head list; + u64 header; + + /* direction wrt host CPU */ + char tx_data[IPC_MAX_MAILBOX_BYTES]; + size_t tx_size; + char rx_data[IPC_MAX_MAILBOX_BYTES]; + size_t rx_size; + + wait_queue_head_t waitq; + bool pending; + bool complete; + bool wait; + int errno; +}; + +struct sst_generic_ipc; + +struct sst_plat_ipc_ops { + void (*tx_msg)(struct sst_generic_ipc *, struct ipc_message *); + void (*shim_dbg)(struct sst_generic_ipc *, const char *); + void (*tx_data_copy)(struct ipc_message *, char *, size_t); + u64 (*reply_msg_match)(u64 header, u64 *mask); +}; + +/* SST generic IPC data */ +struct sst_generic_ipc { + struct device *dev; + struct sst_dsp *dsp; + + /* 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; + bool pending; + struct ipc_message *msg; + + struct sst_plat_ipc_ops ops; +}; + +int sst_ipc_tx_message_wait(struct sst_generic_ipc *ipc, u64 header, + void *tx_data, size_t tx_bytes, void *rx_data, size_t rx_bytes); + +int sst_ipc_tx_message_nowait(struct sst_generic_ipc *ipc, u64 header, + void *tx_data, size_t tx_bytes); + +struct ipc_message *sst_ipc_reply_find_msg(struct sst_generic_ipc *ipc, + u64 header); + +void sst_ipc_tx_msg_reply_complete(struct sst_generic_ipc *ipc, + struct ipc_message *msg); + +void sst_ipc_drop_all(struct sst_generic_ipc *ipc); +int sst_ipc_init(struct sst_generic_ipc *ipc); +void sst_ipc_fini(struct sst_generic_ipc *ipc); + +#endif |