diff --git a/drivers/Kconfig b/drivers/Kconfig index f75da26..0959543 100644 --- a/drivers/Kconfig +++ b/drivers/Kconfig @@ -31,6 +31,7 @@ source "drivers/nvmem/Kconfig" source "drivers/bus/Kconfig" source "drivers/regulator/Kconfig" +source "drivers/remoteproc/Kconfig" source "drivers/reset/Kconfig" source "drivers/pci/Kconfig" source "drivers/rtc/Kconfig" diff --git a/drivers/Makefile b/drivers/Makefile index fb7fcd3..5a52225 100644 --- a/drivers/Makefile +++ b/drivers/Makefile @@ -29,6 +29,7 @@ obj-y += pinctrl/ obj-y += bus/ obj-$(CONFIG_REGULATOR) += regulator/ +obj-$(CONFIG_REMOTEPROC) += remoteproc/ obj-$(CONFIG_RESET_CONTROLLER) += reset/ obj-$(CONFIG_PCI) += pci/ obj-y += rtc/ diff --git a/drivers/remoteproc/Kconfig b/drivers/remoteproc/Kconfig new file mode 100644 index 0000000..8139b64 --- /dev/null +++ b/drivers/remoteproc/Kconfig @@ -0,0 +1,26 @@ +# SPDX-License-Identifier: GPL-2.0-only +menu "Remoteproc drivers" + +config REMOTEPROC + tristate "Support for Remote Processor subsystem" + select CRC32 + select FIRMWARE + help + Support for remote processors (such as DSP coprocessors). These + are mainly used on embedded systems. + +if REMOTEPROC + +config IMX_REMOTEPROC + tristate "IMX6/7 remoteproc support" + depends on ARCH_IMX + select MFD_SYSCON + help + Say y here to support iMX's remote processors (Cortex M4 + on iMX7D) via the remote processor framework. + + It's safe to say N here. + +endif # REMOTEPROC + +endmenu diff --git a/drivers/remoteproc/Makefile b/drivers/remoteproc/Makefile new file mode 100644 index 0000000..1072969 --- /dev/null +++ b/drivers/remoteproc/Makefile @@ -0,0 +1,7 @@ +# SPDX-License-Identifier: GPL-2.0 +# +# Generic framework for controlling remote processors +# + +obj-$(CONFIG_REMOTEPROC) += remoteproc_core.o remoteproc_elf_loader.o +obj-$(CONFIG_IMX_REMOTEPROC) += imx_rproc.o diff --git a/drivers/remoteproc/imx_rproc.c b/drivers/remoteproc/imx_rproc.c new file mode 100644 index 0000000..c5cba37 --- /dev/null +++ b/drivers/remoteproc/imx_rproc.c @@ -0,0 +1,402 @@ +/* + * Copyright (c) 2017 Pengutronix, Oleksij Rempel + * + * 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. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define IMX7D_SRC_SCR 0x0C +#define IMX7D_ENABLE_M4 BIT(3) +#define IMX7D_SW_M4P_RST BIT(2) +#define IMX7D_SW_M4C_RST BIT(1) +#define IMX7D_SW_M4C_NON_SCLR_RST BIT(0) + +#define IMX7D_M4_RST_MASK (IMX7D_ENABLE_M4 | IMX7D_SW_M4P_RST \ + | IMX7D_SW_M4C_RST \ + | IMX7D_SW_M4C_NON_SCLR_RST) + +#define IMX7D_M4_START (IMX7D_ENABLE_M4 | IMX7D_SW_M4P_RST \ + | IMX7D_SW_M4C_RST) +#define IMX7D_M4_STOP IMX7D_SW_M4C_NON_SCLR_RST + +/* Address: 0x020D8000 */ +#define IMX6SX_SRC_SCR 0x00 +#define IMX6SX_ENABLE_M4 BIT(22) +#define IMX6SX_SW_M4P_RST BIT(12) +#define IMX6SX_SW_M4C_NON_SCLR_RST BIT(4) +#define IMX6SX_SW_M4C_RST BIT(3) + +#define IMX6SX_M4_START (IMX6SX_ENABLE_M4 | IMX6SX_SW_M4P_RST \ + | IMX6SX_SW_M4C_RST) +#define IMX6SX_M4_STOP IMX6SX_SW_M4C_NON_SCLR_RST +#define IMX6SX_M4_RST_MASK (IMX6SX_ENABLE_M4 | IMX6SX_SW_M4P_RST \ + | IMX6SX_SW_M4C_NON_SCLR_RST \ + | IMX6SX_SW_M4C_RST) + +#define IMX7D_RPROC_MEM_MAX 8 + +/** + * struct imx_rproc_mem - slim internal memory structure + * @cpu_addr: MPU virtual address of the memory region + * @sys_addr: Bus address used to access the memory region + * @size: Size of the memory region + */ +struct imx_rproc_mem { + void __iomem *cpu_addr; + phys_addr_t sys_addr; + size_t size; +}; + +/* att flags */ +/* M4 own area. Can be mapped at probe */ +#define ATT_OWN BIT(1) + +/* address translation table */ +struct imx_rproc_att { + u32 da; /* device address (From Cortex M4 view)*/ + u32 sa; /* system bus address */ + u32 size; /* size of reg range */ + int flags; +}; + +struct imx_rproc_dcfg { + u32 src_reg; + u32 src_mask; + u32 src_start; + u32 src_stop; + const struct imx_rproc_att *att; + size_t att_size; +}; + +struct imx_rproc { + struct device_d *dev; + struct regmap *regmap; + struct rproc *rproc; + const struct imx_rproc_dcfg *dcfg; + struct imx_rproc_mem mem[IMX7D_RPROC_MEM_MAX]; + struct clk *clk; +}; + +static const struct imx_rproc_att imx_rproc_att_imx7d[] = { + /* dev addr , sys addr , size , flags */ + /* OCRAM_S (M4 Boot code) - alias */ + { 0x00000000, 0x00180000, 0x00008000, 0 }, + /* OCRAM_S (Code) */ + { 0x00180000, 0x00180000, 0x00008000, ATT_OWN }, + /* OCRAM (Code) - alias */ + { 0x00900000, 0x00900000, 0x00020000, 0 }, + /* OCRAM_EPDC (Code) - alias */ + { 0x00920000, 0x00920000, 0x00020000, 0 }, + /* OCRAM_PXP (Code) - alias */ + { 0x00940000, 0x00940000, 0x00008000, 0 }, + /* TCML (Code) */ + { 0x1FFF8000, 0x007F8000, 0x00008000, ATT_OWN }, + /* DDR (Code) - alias, first part of DDR (Data) */ + { 0x10000000, 0x80000000, 0x0FFF0000, 0 }, + + /* TCMU (Data) */ + { 0x20000000, 0x00800000, 0x00008000, ATT_OWN }, + /* OCRAM (Data) */ + { 0x20200000, 0x00900000, 0x00020000, 0 }, + /* OCRAM_EPDC (Data) */ + { 0x20220000, 0x00920000, 0x00020000, 0 }, + /* OCRAM_PXP (Data) */ + { 0x20240000, 0x00940000, 0x00008000, 0 }, + /* DDR (Data) */ + { 0x80000000, 0x80000000, 0x60000000, 0 }, +}; + +static const struct imx_rproc_att imx_rproc_att_imx6sx[] = { + /* dev addr , sys addr , size , flags */ + /* TCML (M4 Boot Code) - alias */ + { 0x00000000, 0x007F8000, 0x00008000, 0 }, + /* OCRAM_S (Code) */ + { 0x00180000, 0x008F8000, 0x00004000, 0 }, + /* OCRAM_S (Code) - alias */ + { 0x00180000, 0x008FC000, 0x00004000, 0 }, + /* TCML (Code) */ + { 0x1FFF8000, 0x007F8000, 0x00008000, ATT_OWN }, + /* DDR (Code) - alias, first part of DDR (Data) */ + { 0x10000000, 0x80000000, 0x0FFF8000, 0 }, + + /* TCMU (Data) */ + { 0x20000000, 0x00800000, 0x00008000, ATT_OWN }, + /* OCRAM_S (Data) - alias? */ + { 0x208F8000, 0x008F8000, 0x00004000, 0 }, + /* DDR (Data) */ + { 0x80000000, 0x80000000, 0x60000000, 0 }, +}; + +static const struct imx_rproc_dcfg imx_rproc_cfg_imx7d = { + .src_reg = IMX7D_SRC_SCR, + .src_mask = IMX7D_M4_RST_MASK, + .src_start = IMX7D_M4_START, + .src_stop = IMX7D_M4_STOP, + .att = imx_rproc_att_imx7d, + .att_size = ARRAY_SIZE(imx_rproc_att_imx7d), +}; + +static const struct imx_rproc_dcfg imx_rproc_cfg_imx6sx = { + .src_reg = IMX6SX_SRC_SCR, + .src_mask = IMX6SX_M4_RST_MASK, + .src_start = IMX6SX_M4_START, + .src_stop = IMX6SX_M4_STOP, + .att = imx_rproc_att_imx6sx, + .att_size = ARRAY_SIZE(imx_rproc_att_imx6sx), +}; + +static int imx_rproc_start(struct rproc *rproc) +{ + struct imx_rproc *priv = rproc->priv; + const struct imx_rproc_dcfg *dcfg = priv->dcfg; + struct device_d *dev = priv->dev; + int ret; + + ret = regmap_update_bits(priv->regmap, dcfg->src_reg, + dcfg->src_mask, dcfg->src_start); + if (ret) + dev_err(dev, "Filed to enable M4!\n"); + + return ret; +} + +static int imx_rproc_stop(struct rproc *rproc) +{ + struct imx_rproc *priv = rproc->priv; + const struct imx_rproc_dcfg *dcfg = priv->dcfg; + struct device_d *dev = priv->dev; + int ret; + + ret = regmap_update_bits(priv->regmap, dcfg->src_reg, + dcfg->src_mask, dcfg->src_stop); + if (ret) + dev_err(dev, "Filed to stop M4!\n"); + + return ret; +} + +static int imx_rproc_da_to_sys(struct imx_rproc *priv, u64 da, + int len, u64 *sys) +{ + const struct imx_rproc_dcfg *dcfg = priv->dcfg; + int i; + + /* parse address translation table */ + for (i = 0; i < dcfg->att_size; i++) { + const struct imx_rproc_att *att = &dcfg->att[i]; + + if (da >= att->da && da + len < att->da + att->size) { + unsigned int offset = da - att->da; + + *sys = att->sa + offset; + return 0; + } + } + + dev_warn(priv->dev, "Translation filed: da = 0x%llx len = 0x%x\n", + da, len); + return -ENOENT; +} + +static void *imx_rproc_da_to_va(struct rproc *rproc, u64 da, int len) +{ + struct imx_rproc *priv = rproc->priv; + void *va = NULL; + u64 sys; + int i; + + if (len <= 0) + return NULL; + + /* + * On device side we have many aliases, so we need to convert device + * address (M4) to system bus address first. + */ + if (imx_rproc_da_to_sys(priv, da, len, &sys)) + return NULL; + + for (i = 0; i < IMX7D_RPROC_MEM_MAX; i++) { + if (sys >= priv->mem[i].sys_addr && sys + len < + priv->mem[i].sys_addr + priv->mem[i].size) { + unsigned int offset = sys - priv->mem[i].sys_addr; + /* __force to make sparse happy with type conversion */ + va = (__force void *)(priv->mem[i].cpu_addr + offset); + break; + } + } + + dev_dbg(&rproc->dev, "da = 0x%llx len = 0x%x va = 0x%p\n", da, len, va); + + return va; +} + +static const struct rproc_ops imx_rproc_ops = { + .start = imx_rproc_start, + .stop = imx_rproc_stop, + .da_to_va = imx_rproc_da_to_va, +}; + +static int imx_rproc_addr_init(struct imx_rproc *priv, + struct device_d *dev) +{ + const struct imx_rproc_dcfg *dcfg = priv->dcfg; + struct device_node *np = dev->device_node; + int a, b = 0, err, nph; + + /* remap required addresses */ + for (a = 0; a < dcfg->att_size; a++) { + const struct imx_rproc_att *att = &dcfg->att[a]; + struct resource *res_cpu; + + if (!(att->flags & ATT_OWN)) + continue; + + if (b >= IMX7D_RPROC_MEM_MAX) + break; + + res_cpu = request_iomem_region(dev_name(dev), + att->sa, + att->sa + att->size - 1); + if (!res_cpu) { + dev_err(dev, "remap required addresses failed\n"); + return PTR_ERR(priv->mem[b].cpu_addr); + } + priv->mem[b].cpu_addr = (void *)res_cpu->start; + priv->mem[b].sys_addr = att->sa; + priv->mem[b].size = att->size; + b++; + } + + /* memory-region is optional property */ + nph = of_count_phandle_with_args(np, "memory-region", NULL); + if (nph <= 0) + return 0; + + /* remap optional addresses */ + for (a = 0; a < nph; a++) { + struct device_node *node; + struct resource res, *res_cpu; + + node = of_parse_phandle(np, "memory-region", a); + err = of_address_to_resource(node, 0, &res); + if (err) { + dev_err(dev, "unable to resolve memory region\n"); + return err; + } + + if (b >= IMX7D_RPROC_MEM_MAX) + break; + + res_cpu = request_sdram_region(dev_name(dev), res.start, + res.end - res.start); + if (!res_cpu) { + dev_err(dev, "remap optional addresses failed\n"); + return -ENOMEM; + } + priv->mem[b].cpu_addr = (void *)res_cpu->start; + priv->mem[b].sys_addr = res.start; + priv->mem[b].size = resource_size(&res); + b++; + } + + return 0; +} + +static int imx_rproc_probe(struct device_d *dev) +{ + struct device_node *np = dev->device_node; + struct imx_rproc *priv; + struct rproc *rproc; + const struct imx_rproc_dcfg *dcfg; + struct regmap *regmap; + int ret; + + regmap = syscon_regmap_lookup_by_phandle(np, "syscon"); + if (IS_ERR(regmap)) { + dev_err(dev, "failed to find syscon\n"); + return PTR_ERR(regmap); + } + + /* set some other name then imx */ + rproc = rproc_alloc(dev, dev_name(dev), &imx_rproc_ops, sizeof(*priv)); + if (!rproc) + return -ENOMEM; + + dcfg = of_device_get_match_data(dev); + if (!dcfg) { + ret = -EINVAL; + goto err_put_rproc; + } + + priv = rproc->priv; + priv->rproc = rproc; + priv->regmap = regmap; + priv->dcfg = dcfg; + priv->dev = dev; + + ret = imx_rproc_addr_init(priv, dev); + if (ret) { + dev_err(dev, "filed on imx_rproc_addr_init\n"); + goto err_put_rproc; + } + + priv->clk = clk_get(dev, 0); + if (IS_ERR(priv->clk)) { + dev_err(dev, "Failed to get clock\n"); + ret = PTR_ERR(priv->clk); + goto err_put_rproc; + } + + /* + * clk for M4 block including memory. Should be + * enabled before .start for FW transfer. + */ + ret = clk_enable(priv->clk); + if (ret) { + dev_err(&rproc->dev, "Failed to enable clock\n"); + goto err_put_rproc; + } + + ret = rproc_add(rproc); + if (ret) { + dev_err(dev, "rproc_add failed\n"); + goto err_put_clk; + } + + return 0; + +err_put_clk: + clk_disable(priv->clk); +err_put_rproc: + return ret; +} + +static const struct of_device_id imx_rproc_of_match[] = { + { .compatible = "fsl,imx7d-cm4", .data = &imx_rproc_cfg_imx7d }, + { .compatible = "fsl,imx6sx-cm4", .data = &imx_rproc_cfg_imx6sx }, + {}, +}; + +static struct driver_d imx_rproc_driver = { + .name = "imx-rproc", + .probe = imx_rproc_probe, + .of_compatible = DRV_OF_COMPAT(imx_rproc_of_match), +}; +device_platform_driver(imx_rproc_driver); diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c new file mode 100644 index 0000000..7cac47e --- /dev/null +++ b/drivers/remoteproc/remoteproc_core.c @@ -0,0 +1,166 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Remote Processor Framework + * + * Copyright (C) 2011 Texas Instruments, Inc. + * Copyright (C) 2011 Google, Inc. + * + * Ohad Ben-Cohen + * Brian Swetland + * Mark Grosen + * Fernando Guzman Lugo + * Suman Anna + * Robert Tivy + * Armando Uribe De Leon + */ + +#include +#include +#include + +#include "remoteproc_internal.h" + +void *rproc_da_to_va(struct rproc *rproc, u64 da, int len) +{ + void *ptr; + + if (rproc->ops->da_to_va) { + ptr = rproc->ops->da_to_va(rproc, da, len); + if (ptr) + return ptr; + } + + return NULL; +} + +static int rproc_start(struct rproc *rproc, const struct firmware *fw) +{ + struct device_d *dev = &rproc->dev; + int ret; + + /* load the ELF segments to memory */ + ret = rproc_load_segments(rproc, fw); + if (ret) { + dev_err(dev, "Failed to load program segments: %d\n", ret); + return ret; + } + + /* power up the remote processor */ + ret = rproc->ops->start(rproc); + if (ret) { + dev_err(dev, "can't start rproc %s: %d\n", rproc->name, ret); + return ret; + } + + dev_info(dev, "remote processor %s is now up\n", rproc->name); + + return 0; +} + +static int rproc_firmware_start(struct firmware_handler *fh) +{ + struct rproc *rproc = container_of(fh, struct rproc, fh); + + rproc->fw_buf = kzalloc((4096 * 1024), GFP_KERNEL); + rproc->fw_buf_ofs = 0; + return 0; +} + +static int rproc_firmware_write_buf(struct firmware_handler *fh, const void *buf, + size_t size) +{ + struct rproc *rproc = container_of(fh, struct rproc, fh); + + if (rproc->fw_buf_ofs + size > (4096 * 1024)) { + return -ENOMEM; + } + + memcpy(rproc->fw_buf + rproc->fw_buf_ofs, buf, size); + rproc->fw_buf_ofs += size; + + return 0; +} + +static int rproc_firmware_finish(struct firmware_handler *fh) +{ + struct rproc *rproc = container_of(fh, struct rproc, fh); + struct firmware fw; + struct device_d *dev; + int ret; + + if (!rproc) { + pr_err("invalid rproc handle\n"); + return -EINVAL; + } + + dev = &rproc->dev; + + dev_info(dev, "powering up %s\n", rproc->name); + + fw.data = rproc->fw_buf; + fw.size = rproc->fw_buf_ofs; + + ret = rproc_start(rproc, &fw); + + kfree(rproc->fw_buf); + + return ret; +} + +int rproc_add(struct rproc *rproc) +{ + struct device_d *dev = &rproc->dev; + struct firmware_handler *fh; + int ret; + + fh = &rproc->fh; + fh->id = xstrdup(rproc->name); + fh->open = rproc_firmware_start; + fh->write = rproc_firmware_write_buf; + fh->close = rproc_firmware_finish; + + ret = firmwaremgr_register(fh); + if (ret) + dev_err(dev, "filed to register firmware handler %s\n", rproc->name); + else + dev_info(dev, "%s is available\n", rproc->name); + + return ret; +} + +struct rproc *rproc_alloc(struct device_d *dev, const char *name, + const struct rproc_ops *ops, int len) +{ + struct rproc *rproc; + + if (!dev || !name || !ops) + return NULL; + + rproc = xzalloc(sizeof(struct rproc) + len); + if (!rproc) { + return NULL; + } + + rproc->ops = kmemdup(ops, sizeof(*ops), GFP_KERNEL); + if (!rproc->ops) { + kfree(rproc); + return NULL; + } + + rproc->name = name; + rproc->priv = &rproc[1]; + + rproc->dev.parent = dev; + rproc->dev.priv = rproc; + + /* Assign a unique device index and name */ + rproc->index = 1; + + dev_set_name(&rproc->dev, "remoteproc%d", rproc->index); + + /* Default to ELF loader if no load function is specified */ + if (!rproc->ops->load) + rproc->ops->load = rproc_elf_load_segments; + + return rproc; +} diff --git a/drivers/remoteproc/remoteproc_elf_loader.c b/drivers/remoteproc/remoteproc_elf_loader.c new file mode 100644 index 0000000..45d52db --- /dev/null +++ b/drivers/remoteproc/remoteproc_elf_loader.c @@ -0,0 +1,88 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Remote Processor Framework Elf loader + * + * Copyright (C) 2011 Texas Instruments, Inc. + * Copyright (C) 2011 Google, Inc. + * + * Ohad Ben-Cohen + * Brian Swetland + * Mark Grosen + * Fernando Guzman Lugo + * Suman Anna + * Robert Tivy + * Armando Uribe De Leon + * Sjur Brændeland + */ + +#include +#include +#include + +#include "remoteproc_internal.h" + +int rproc_elf_load_segments(struct rproc *rproc, const struct firmware *fw) +{ + struct device_d *dev = &rproc->dev; + struct elf32_hdr *ehdr; + struct elf32_phdr *phdr; + int i, ret = 0; + const u8 *elf_data = fw->data; + + ehdr = (struct elf32_hdr *)elf_data; + phdr = (struct elf32_phdr *)(elf_data + ehdr->e_phoff); + + /* go through the available ELF segments */ + for (i = 0; i < ehdr->e_phnum; i++, phdr++) { + u32 da = phdr->p_paddr; + u32 memsz = phdr->p_memsz; + u32 filesz = phdr->p_filesz; + u32 offset = phdr->p_offset; + void *ptr; + + if (phdr->p_type != PT_LOAD) + continue; + + dev_dbg(dev, "phdr: type %d da 0x%x memsz 0x%x filesz 0x%x\n", + phdr->p_type, da, memsz, filesz); + + if (filesz > memsz) { + dev_err(dev, "bad phdr filesz 0x%x memsz 0x%x\n", + filesz, memsz); + ret = -EINVAL; + break; + } + + if (offset + filesz > fw->size) { + dev_err(dev, "truncated fw: need 0x%x avail 0x%zx\n", + offset + filesz, fw->size); + ret = -EINVAL; + break; + } + + /* grab the kernel address for this device address */ + ptr = rproc_da_to_va(rproc, da, memsz); + if (!ptr) { + dev_err(dev, "bad phdr da 0x%x mem 0x%x\n", da, memsz); + ret = -EINVAL; + break; + } + + /* put the segment where the remote processor expects it */ + if (phdr->p_filesz) + memcpy(ptr, elf_data + phdr->p_offset, filesz); + + /* + * Zero out remaining memory for this segment. + * + * This isn't strictly required since dma_alloc_coherent already + * did this for us. albeit harmless, we may consider removing + * this. + */ + if (memsz > filesz) + memset(ptr + filesz, 0, memsz - filesz); + } + + return ret; +} +EXPORT_SYMBOL(rproc_elf_load_segments); diff --git a/drivers/remoteproc/remoteproc_internal.h b/drivers/remoteproc/remoteproc_internal.h new file mode 100644 index 0000000..8893d1a --- /dev/null +++ b/drivers/remoteproc/remoteproc_internal.h @@ -0,0 +1,30 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Remote processor framework + * + * Copyright (C) 2011 Texas Instruments, Inc. + * Copyright (C) 2011 Google, Inc. + * + * Ohad Ben-Cohen + * Brian Swetland + */ + +#ifndef REMOTEPROC_INTERNAL_H +#define REMOTEPROC_INTERNAL_H + +struct rproc; + +void *rproc_da_to_va(struct rproc *rproc, u64 da, int len); + +int rproc_elf_load_segments(struct rproc *rproc, const struct firmware *fw); + +static inline +int rproc_load_segments(struct rproc *rproc, const struct firmware *fw) +{ + if (rproc->ops->load) + return rproc->ops->load(rproc, fw); + + return -EINVAL; +} + +#endif /* REMOTEPROC_INTERNAL_H */ diff --git a/include/linux/remoteproc.h b/include/linux/remoteproc.h new file mode 100644 index 0000000..feee9ee --- /dev/null +++ b/include/linux/remoteproc.h @@ -0,0 +1,51 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Remote Processor Framework + * + * Copyright(c) 2011 Texas Instruments, Inc. + * Copyright(c) 2011 Google, Inc. + */ + +#ifndef REMOTEPROC_H +#define REMOTEPROC_H + +#include + +struct resource_table { + u32 ver; + u32 num; + u32 reserved[2]; + u32 offset[0]; +} __packed; + +struct firmware { + size_t size; + const u8 *data; +}; + +struct rproc; + +struct rproc_ops { + int (*start)(struct rproc *rproc); + int (*stop)(struct rproc *rproc); + void * (*da_to_va)(struct rproc *rproc, u64 da, int len); + int (*load)(struct rproc *rproc, const struct firmware *fw); +}; + +struct rproc { + struct firmware_handler fh; + const char *name; + void *priv; + struct rproc_ops *ops; + struct device_d dev; + int index; + + void *fw_buf; + size_t fw_buf_ofs; +}; + +struct rproc *rproc_alloc(struct device_d *dev, const char *name, + const struct rproc_ops *ops, int len); +int rproc_add(struct rproc *rproc); + +#endif /* REMOTEPROC_H */