843 lines
26 KiB
C
Executable File
843 lines
26 KiB
C
Executable File
/*
|
|
* Remoteproc Framework
|
|
*
|
|
* Copyright(c) 2018 Xilinx Ltd.
|
|
* Copyright(c) 2011 Texas Instruments, Inc.
|
|
* Copyright(c) 2011 Google, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* SPDX-License-Identifier: BSD-3-Clause
|
|
*/
|
|
|
|
#ifndef REMOTEPROC_H
|
|
#define REMOTEPROC_H
|
|
|
|
#include <metal/io.h>
|
|
#include <metal/mutex.h>
|
|
#include <metal/compiler.h>
|
|
|
|
#if defined __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
#define RSC_NOTIFY_ID_ANY 0xFFFFFFFFUL
|
|
|
|
#define RPROC_MAX_NAME_LEN 32
|
|
|
|
/**
|
|
* struct resource_table - firmware resource table header
|
|
* @ver: version number
|
|
* @num: number of resource entries
|
|
* @reserved: reserved (must be zero)
|
|
* @offset: array of offsets pointing at the various resource entries
|
|
*
|
|
* A resource table is essentially a list of system resources required
|
|
* by the remote remoteproc. It may also include configuration entries.
|
|
* If needed, the remote remoteproc firmware should contain this table
|
|
* as a dedicated ".resource_table" ELF section.
|
|
*
|
|
* Some resources entries are mere announcements, where the host is informed
|
|
* of specific remoteproc configuration. Other entries require the host to
|
|
* do something (e.g. allocate a system resource). Sometimes a negotiation
|
|
* is expected, where the firmware requests a resource, and once allocated,
|
|
* the host should provide back its details (e.g. address of an allocated
|
|
* memory region).
|
|
*
|
|
* The header of the resource table, as expressed by this structure,
|
|
* contains a version number (should we need to change this format in the
|
|
* future), the number of available resource entries, and their offsets
|
|
* in the table.
|
|
*
|
|
* Immediately following this header are the resource entries themselves,
|
|
* each of which begins with a resource entry header (as described below).
|
|
*/
|
|
METAL_PACKED_BEGIN
|
|
struct resource_table {
|
|
uint32_t ver;
|
|
uint32_t num;
|
|
uint32_t reserved[2];
|
|
uint32_t offset[0];
|
|
} METAL_PACKED_END;
|
|
|
|
/**
|
|
* struct fw_rsc_hdr - firmware resource entry header
|
|
* @type: resource type
|
|
* @data: resource data
|
|
*
|
|
* Every resource entry begins with a 'struct fw_rsc_hdr' header providing
|
|
* its @type. The content of the entry itself will immediately follow
|
|
* this header, and it should be parsed according to the resource type.
|
|
*/
|
|
METAL_PACKED_BEGIN
|
|
struct fw_rsc_hdr {
|
|
uint32_t type;
|
|
uint8_t data[0];
|
|
} METAL_PACKED_END;
|
|
|
|
/**
|
|
* enum fw_resource_type - types of resource entries
|
|
*
|
|
* @RSC_CARVEOUT: request for allocation of a physically contiguous
|
|
* memory region.
|
|
* @RSC_DEVMEM: request to iommu_map a memory-based peripheral.
|
|
* @RSC_TRACE: announces the availability of a trace buffer into which
|
|
* the remote remoteproc will be writing logs.
|
|
* @RSC_VDEV: declare support for a virtio device, and serve as its
|
|
* virtio header.
|
|
* @RSC_VENDOR_START: start of the vendor specific resource types range
|
|
* @RSC_VENDOR_END : end of the vendor specific resource types range
|
|
* @RSC_LAST: just keep this one at the end
|
|
*
|
|
* For more details regarding a specific resource type, please see its
|
|
* dedicated structure below.
|
|
*
|
|
* Please note that these values are used as indices to the rproc_handle_rsc
|
|
* lookup table, so please keep them sane. Moreover, @RSC_LAST is used to
|
|
* check the validity of an index before the lookup table is accessed, so
|
|
* please update it as needed.
|
|
*/
|
|
enum fw_resource_type {
|
|
RSC_CARVEOUT = 0,
|
|
RSC_DEVMEM = 1,
|
|
RSC_TRACE = 2,
|
|
RSC_VDEV = 3,
|
|
RSC_LAST = 4,
|
|
RSC_VENDOR_START = 128,
|
|
RSC_AW_TRACE = 129,
|
|
RSC_VENDOR_END = 512,
|
|
};
|
|
|
|
#define FW_RSC_U64_ADDR_ANY 0xFFFFFFFFFFFFFFFFUL
|
|
#define FW_RSC_U32_ADDR_ANY 0xFFFFFFFFUL
|
|
|
|
/**
|
|
* struct fw_rsc_carveout - physically contiguous memory request
|
|
* @da: device address
|
|
* @pa: physical address
|
|
* @len: length (in bytes)
|
|
* @flags: iommu protection flags
|
|
* @reserved: reserved (must be zero)
|
|
* @name: human-readable name of the requested memory region
|
|
*
|
|
* This resource entry requests the host to allocate a physically contiguous
|
|
* memory region.
|
|
*
|
|
* These request entries should precede other firmware resource entries,
|
|
* as other entries might request placing other data objects inside
|
|
* these memory regions (e.g. data/code segments, trace resource entries, ...).
|
|
*
|
|
* Allocating memory this way helps utilizing the reserved physical memory
|
|
* (e.g. CMA) more efficiently, and also minimizes the number of TLB entries
|
|
* needed to map it (in case @rproc is using an IOMMU). Reducing the TLB
|
|
* pressure is important; it may have a substantial impact on performance.
|
|
*
|
|
* If the firmware is compiled with static addresses, then @da should specify
|
|
* the expected device address of this memory region. If @da is set to
|
|
* FW_RSC_ADDR_ANY, then the host will dynamically allocate it, and then
|
|
* overwrite @da with the dynamically allocated address.
|
|
*
|
|
* We will always use @da to negotiate the device addresses, even if it
|
|
* isn't using an iommu. In that case, though, it will obviously contain
|
|
* physical addresses.
|
|
*
|
|
* Some remote remoteprocs needs to know the allocated physical address
|
|
* even if they do use an iommu. This is needed, e.g., if they control
|
|
* hardware accelerators which access the physical memory directly (this
|
|
* is the case with OMAP4 for instance). In that case, the host will
|
|
* overwrite @pa with the dynamically allocated physical address.
|
|
* Generally we don't want to expose physical addresses if we don't have to
|
|
* (remote remoteprocs are generally _not_ trusted), so we might want to
|
|
* change this to happen _only_ when explicitly required by the hardware.
|
|
*
|
|
* @flags is used to provide IOMMU protection flags, and @name should
|
|
* (optionally) contain a human readable name of this carveout region
|
|
* (mainly for debugging purposes).
|
|
*/
|
|
METAL_PACKED_BEGIN
|
|
struct fw_rsc_carveout {
|
|
uint32_t type;
|
|
uint32_t da;
|
|
uint32_t pa;
|
|
uint32_t len;
|
|
uint32_t flags;
|
|
uint32_t reserved;
|
|
uint8_t name[RPROC_MAX_NAME_LEN];
|
|
} METAL_PACKED_END;
|
|
|
|
/**
|
|
* struct fw_rsc_devmem - iommu mapping request
|
|
* @da: device address
|
|
* @pa: physical address
|
|
* @len: length (in bytes)
|
|
* @flags: iommu protection flags
|
|
* @reserved: reserved (must be zero)
|
|
* @name: human-readable name of the requested region to be mapped
|
|
*
|
|
* This resource entry requests the host to iommu map a physically contiguous
|
|
* memory region. This is needed in case the remote remoteproc requires
|
|
* access to certain memory-based peripherals; _never_ use it to access
|
|
* regular memory.
|
|
*
|
|
* This is obviously only needed if the remote remoteproc is accessing memory
|
|
* via an iommu.
|
|
*
|
|
* @da should specify the required device address, @pa should specify
|
|
* the physical address we want to map, @len should specify the size of
|
|
* the mapping and @flags is the IOMMU protection flags. As always, @name may
|
|
* (optionally) contain a human readable name of this mapping (mainly for
|
|
* debugging purposes).
|
|
*
|
|
* Note: at this point we just "trust" those devmem entries to contain valid
|
|
* physical addresses, but this isn't safe and will be changed: eventually we
|
|
* want remoteproc implementations to provide us ranges of physical addresses
|
|
* the firmware is allowed to request, and not allow firmwares to request
|
|
* access to physical addresses that are outside those ranges.
|
|
*/
|
|
METAL_PACKED_BEGIN
|
|
struct fw_rsc_devmem {
|
|
uint32_t type;
|
|
uint32_t da;
|
|
uint32_t pa;
|
|
uint32_t len;
|
|
uint32_t flags;
|
|
uint32_t reserved;
|
|
uint8_t name[RPROC_MAX_NAME_LEN];
|
|
} METAL_PACKED_END;
|
|
|
|
/**
|
|
* struct fw_rsc_trace - trace buffer declaration
|
|
* @da: device address
|
|
* @len: length (in bytes)
|
|
* @reserved: reserved (must be zero)
|
|
* @name: human-readable name of the trace buffer
|
|
*
|
|
* This resource entry provides the host information about a trace buffer
|
|
* into which the remote remoteproc will write log messages.
|
|
*
|
|
* @da specifies the device address of the buffer, @len specifies
|
|
* its size, and @name may contain a human readable name of the trace buffer.
|
|
*
|
|
* After booting the remote remoteproc, the trace buffers are exposed to the
|
|
* user via debugfs entries (called trace0, trace1, etc..).
|
|
*/
|
|
METAL_PACKED_BEGIN
|
|
struct fw_rsc_trace {
|
|
uint32_t type;
|
|
uint32_t da;
|
|
uint32_t len;
|
|
uint32_t reserved;
|
|
uint8_t name[RPROC_MAX_NAME_LEN];
|
|
} METAL_PACKED_END;
|
|
|
|
/**
|
|
* struct fw_rsc_vdev_vring - vring descriptor entry
|
|
* @da: device address
|
|
* @align: the alignment between the consumer and producer parts of the vring
|
|
* @num: num of buffers supported by this vring (must be power of two)
|
|
* @notifyid is a unique rproc-wide notify index for this vring. This notify
|
|
* index is used when kicking a remote remoteproc, to let it know that this
|
|
* vring is triggered.
|
|
* @reserved: reserved (must be zero)
|
|
*
|
|
* This descriptor is not a resource entry by itself; it is part of the
|
|
* vdev resource type (see below).
|
|
*
|
|
* Note that @da should either contain the device address where
|
|
* the remote remoteproc is expecting the vring, or indicate that
|
|
* dynamically allocation of the vring's device address is supported.
|
|
*/
|
|
METAL_PACKED_BEGIN
|
|
struct fw_rsc_vdev_vring {
|
|
uint32_t da;
|
|
uint32_t align;
|
|
uint32_t num;
|
|
uint32_t notifyid;
|
|
uint32_t reserved;
|
|
} METAL_PACKED_END;
|
|
|
|
/**
|
|
* struct fw_rsc_vdev - virtio device header
|
|
* @id: virtio device id (as in virtio_ids.h)
|
|
* @notifyid is a unique rproc-wide notify index for this vdev. This notify
|
|
* index is used when kicking a remote remoteproc, to let it know that the
|
|
* status/features of this vdev have changes.
|
|
* @dfeatures specifies the virtio device features supported by the firmware
|
|
* @gfeatures is a place holder used by the host to write back the
|
|
* negotiated features that are supported by both sides.
|
|
* @config_len is the size of the virtio config space of this vdev. The config
|
|
* space lies in the resource table immediate after this vdev header.
|
|
* @status is a place holder where the host will indicate its virtio progress.
|
|
* @num_of_vrings indicates how many vrings are described in this vdev header
|
|
* @reserved: reserved (must be zero)
|
|
* @vring is an array of @num_of_vrings entries of 'struct fw_rsc_vdev_vring'.
|
|
*
|
|
* This resource is a virtio device header: it provides information about
|
|
* the vdev, and is then used by the host and its peer remote remoteprocs
|
|
* to negotiate and share certain virtio properties.
|
|
*
|
|
* By providing this resource entry, the firmware essentially asks remoteproc
|
|
* to statically allocate a vdev upon registration of the rproc (dynamic vdev
|
|
* allocation is not yet supported).
|
|
*
|
|
* Note: unlike virtualization systems, the term 'host' here means
|
|
* the Linux side which is running remoteproc to control the remote
|
|
* remoteprocs. We use the name 'gfeatures' to comply with virtio's terms,
|
|
* though there isn't really any virtualized guest OS here: it's the host
|
|
* which is responsible for negotiating the final features.
|
|
* Yeah, it's a bit confusing.
|
|
*
|
|
* Note: immediately following this structure is the virtio config space for
|
|
* this vdev (which is specific to the vdev; for more info, read the virtio
|
|
* spec). the size of the config space is specified by @config_len.
|
|
*/
|
|
METAL_PACKED_BEGIN
|
|
struct fw_rsc_vdev {
|
|
uint32_t type;
|
|
uint32_t id;
|
|
uint32_t notifyid;
|
|
uint32_t dfeatures;
|
|
uint32_t gfeatures;
|
|
uint32_t config_len;
|
|
uint8_t status;
|
|
uint8_t num_of_vrings;
|
|
uint8_t reserved[2];
|
|
struct fw_rsc_vdev_vring vring[0];
|
|
} METAL_PACKED_END;
|
|
|
|
/**
|
|
* struct fw_rsc_vendor - remote processor vendor specific resource
|
|
* @len: length of the resource
|
|
*
|
|
* This resource entry tells the host the vendor specific resource
|
|
* required by the remote.
|
|
*
|
|
* These request entries should precede other shared resource entries
|
|
* such as vdevs, vrings.
|
|
*/
|
|
METAL_PACKED_BEGIN
|
|
struct fw_rsc_vendor {
|
|
uint32_t type;
|
|
uint32_t len;
|
|
} METAL_PACKED_END;
|
|
|
|
struct loader_ops;
|
|
struct image_store_ops;
|
|
struct remoteproc_ops;
|
|
|
|
/**
|
|
* struct remoteproc_mem
|
|
*
|
|
* This structure presents the memory used by the remote processor
|
|
*
|
|
* @da: device memory
|
|
* @pa: physical memory
|
|
* @size: size of the memory
|
|
* @io: pointer to the I/O region
|
|
* @node: list node
|
|
*/
|
|
struct remoteproc_mem {
|
|
metal_phys_addr_t da;
|
|
metal_phys_addr_t pa;
|
|
size_t size;
|
|
char name[RPROC_MAX_NAME_LEN];
|
|
struct metal_io_region *io;
|
|
struct metal_list node;
|
|
};
|
|
|
|
/**
|
|
* struct remoteproc
|
|
*
|
|
* This structure is maintained by the remoteproc to represent the remote
|
|
* processor instance. This structure acts as a prime parameter to use
|
|
* the remoteproc APIs.
|
|
*
|
|
* @bootaddr: boot address
|
|
* @loader: executable loader
|
|
* @lock: mutex lock
|
|
* @ops: remoteproc operations
|
|
* @rsc_table: pointer to resource table
|
|
* @rsc_len: length of resource table
|
|
* @rsc_io: metal I/O region of resource table
|
|
* @mems: remoteproc memories
|
|
* @vdevs: remoteproc virtio devices
|
|
* @bitmap: bitmap for notify IDs for remoteproc subdevices
|
|
* @state: remote processor state
|
|
* @priv: private data
|
|
*/
|
|
struct remoteproc {
|
|
metal_mutex_t lock;
|
|
void *rsc_table;
|
|
size_t rsc_len;
|
|
struct metal_io_region *rsc_io;
|
|
struct metal_list mems;
|
|
struct metal_list vdevs;
|
|
unsigned long bitmap;
|
|
struct remoteproc_ops *ops;
|
|
metal_phys_addr_t bootaddr;
|
|
struct loader_ops *loader;
|
|
unsigned int state;
|
|
void *priv;
|
|
};
|
|
|
|
/**
|
|
* struct remoteproc_ops
|
|
*
|
|
* remoteproc operations needs to be implemented by each remoteproc driver
|
|
*
|
|
* @init: initialize the remoteproc instance
|
|
* @remove: remove the remoteproc instance
|
|
* @mmap: memory mapped the memory with physical address or destination
|
|
* address as input.
|
|
* @handle_rsc: handle the vendor specific resource
|
|
* @config: configure the remoteproc to make it ready to load and run
|
|
* executable
|
|
* @start: kick the remoteproc to run application
|
|
* @stop: stop the remoteproc from running application, the resource such as
|
|
* memory may not be off.
|
|
* @shutdown: shutdown the remoteproc and release its resources.
|
|
* @notify: notify the remote
|
|
* @get_mem: get remoteproc memory I/O region.
|
|
*/
|
|
struct remoteproc_ops {
|
|
struct remoteproc *(*init)(struct remoteproc *rproc,
|
|
struct remoteproc_ops *ops, void *arg);
|
|
void (*remove)(struct remoteproc *rproc);
|
|
void *(*mmap)(struct remoteproc *rproc,
|
|
metal_phys_addr_t *pa, metal_phys_addr_t *da,
|
|
size_t size, unsigned int attribute,
|
|
struct metal_io_region **io);
|
|
int (*handle_rsc)(struct remoteproc *rproc, void *rsc, size_t len);
|
|
int (*config)(struct remoteproc *rproc, void *data);
|
|
int (*start)(struct remoteproc *rproc);
|
|
int (*stop)(struct remoteproc *rproc);
|
|
int (*shutdown)(struct remoteproc *rproc);
|
|
int (*notify)(struct remoteproc *rproc, uint32_t id);
|
|
/**
|
|
* get_mem
|
|
*
|
|
* get remoteproc memory I/O region by either name, virtual
|
|
* address, physical address or device address.
|
|
*
|
|
* @rproc - pointer to remoteproc instance
|
|
* @name - memory name
|
|
* @pa - physical address
|
|
* @da - device address
|
|
* @va - virtual address
|
|
* @size - memory size
|
|
*
|
|
* @returns remoteproc memory pointed by buf if success, otherwise NULL
|
|
*/
|
|
struct remoteproc_mem *(*get_mem)(struct remoteproc *rproc,
|
|
const char *name,
|
|
metal_phys_addr_t pa,
|
|
metal_phys_addr_t da,
|
|
void *va, size_t size,
|
|
struct remoteproc_mem *buf);
|
|
};
|
|
|
|
/* Remoteproc error codes */
|
|
#define RPROC_EBASE 0
|
|
#define RPROC_ENOMEM (RPROC_EBASE + 1)
|
|
#define RPROC_EINVAL (RPROC_EBASE + 2)
|
|
#define RPROC_ENODEV (RPROC_EBASE + 3)
|
|
#define RPROC_EAGAIN (RPROC_EBASE + 4)
|
|
#define RPROC_ERR_RSC_TAB_TRUNC (RPROC_EBASE + 5)
|
|
#define RPROC_ERR_RSC_TAB_VER (RPROC_EBASE + 6)
|
|
#define RPROC_ERR_RSC_TAB_RSVD (RPROC_EBASE + 7)
|
|
#define RPROC_ERR_RSC_TAB_VDEV_NRINGS (RPROC_EBASE + 9)
|
|
#define RPROC_ERR_RSC_TAB_NP (RPROC_EBASE + 10)
|
|
#define RPROC_ERR_RSC_TAB_NS (RPROC_EBASE + 11)
|
|
#define RPROC_ERR_LOADER_STATE (RPROC_EBASE + 12)
|
|
#define RPROC_EMAX (RPROC_EBASE + 16)
|
|
#define RPROC_EPTR (void *)(-1)
|
|
#define RPROC_EOF (void *)(-1)
|
|
|
|
static inline long RPROC_PTR_ERR(const void *ptr)
|
|
{
|
|
return (long)ptr;
|
|
}
|
|
|
|
static inline int RPROC_IS_ERR(const void *ptr)
|
|
{
|
|
if ((unsigned long)ptr >= (unsigned long)(-RPROC_EMAX))
|
|
return 1;
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
static inline void *RPROC_ERR_PTR(long error)
|
|
{
|
|
return (void *)error;
|
|
}
|
|
|
|
/**
|
|
* enum rproc_state - remote processor states
|
|
* @RPROC_OFFLINE: remote is offline
|
|
* @RPROC_CONFIGURED: remote is configured
|
|
* @RPROC_READY: remote is ready to start
|
|
* @RPROC_RUNNING: remote is up and running
|
|
* @RPROC_SUSPENDED: remote is suspended
|
|
* @RPROC_ERROR: remote has error; need to recover
|
|
* @RPROC_STOPPED: remote is stopped
|
|
* @RPROC_LAST: just keep this one at the end
|
|
*/
|
|
enum remoteproc_state {
|
|
RPROC_OFFLINE = 0,
|
|
RPROC_CONFIGURED = 1,
|
|
RPROC_READY = 2,
|
|
RPROC_RUNNING = 3,
|
|
RPROC_SUSPENDED = 4,
|
|
RPROC_ERROR = 5,
|
|
RPROC_STOPPED = 6,
|
|
RPROC_LAST = 7,
|
|
};
|
|
|
|
/**
|
|
* remoteproc_init
|
|
*
|
|
* Initializes remoteproc resource.
|
|
*
|
|
* @rproc - pointer to remoteproc instance
|
|
* @ops - pointer to remoteproc operations
|
|
* @priv - pointer to private data
|
|
*
|
|
* @returns created remoteproc pointer
|
|
*/
|
|
struct remoteproc *remoteproc_init(struct remoteproc *rproc,
|
|
struct remoteproc_ops *ops, void *priv);
|
|
|
|
/**
|
|
* remoteproc_remove
|
|
*
|
|
* Remove remoteproc resource
|
|
*
|
|
* @rproc - pointer to remoteproc instance
|
|
*
|
|
* returns 0 for success, negative value for failure
|
|
*/
|
|
int remoteproc_remove(struct remoteproc *rproc);
|
|
|
|
/**
|
|
* remoteproc_init_mem
|
|
*
|
|
* Initialize remoteproc memory
|
|
*
|
|
* @mem - pointer to remoteproc memory
|
|
* @name - memory name
|
|
* @pa - physical address
|
|
* @da - device address
|
|
* @size - memory size
|
|
* @io - pointer to the I/O region
|
|
*/
|
|
static inline void
|
|
remoteproc_init_mem(struct remoteproc_mem *mem, const char *name,
|
|
metal_phys_addr_t pa, metal_phys_addr_t da,
|
|
size_t size, struct metal_io_region *io)
|
|
{
|
|
if (!mem)
|
|
return;
|
|
if (name)
|
|
strncpy(mem->name, name, sizeof(mem->name));
|
|
else
|
|
mem->name[0] = 0;
|
|
mem->pa = pa;
|
|
mem->da = da;
|
|
mem->io = io;
|
|
mem->size = size;
|
|
}
|
|
|
|
/**
|
|
* remoteproc_add_mem
|
|
*
|
|
* Add remoteproc memory
|
|
*
|
|
* @rproc - pointer to remoteproc
|
|
* @mem - pointer to remoteproc memory
|
|
*/
|
|
static inline void
|
|
remoteproc_add_mem(struct remoteproc *rproc, struct remoteproc_mem *mem)
|
|
{
|
|
if (!rproc || !mem)
|
|
return;
|
|
metal_list_add_tail(&rproc->mems, &mem->node);
|
|
}
|
|
|
|
/**
|
|
* remoteproc_get_io_with_name
|
|
*
|
|
* get remoteproc memory I/O region with name
|
|
*
|
|
* @rproc - pointer to the remote processor
|
|
* @name - name of the shared memory
|
|
* @io - pointer to the pointer of the I/O region
|
|
*
|
|
* returns metal I/O region pointer, NULL for failure
|
|
*/
|
|
struct metal_io_region *
|
|
remoteproc_get_io_with_name(struct remoteproc *rproc,
|
|
const char *name);
|
|
|
|
/**
|
|
* remoteproc_get_io_with_pa
|
|
*
|
|
* get remoteproc memory I/O region with physical address
|
|
*
|
|
* @rproc - pointer to the remote processor
|
|
* @pa - physical address
|
|
*
|
|
* returns metal I/O region pointer, NULL for failure
|
|
*/
|
|
struct metal_io_region *
|
|
remoteproc_get_io_with_pa(struct remoteproc *rproc,
|
|
metal_phys_addr_t pa);
|
|
|
|
/**
|
|
* remoteproc_get_io_with_da
|
|
*
|
|
* get remoteproc memory I/O region with device address
|
|
*
|
|
* @rproc - pointer to the remote processor
|
|
* @da - device address
|
|
* @offset - I/O region offset of the device address
|
|
*
|
|
* returns metal I/O region pointer, NULL for failure
|
|
*/
|
|
struct metal_io_region *
|
|
remoteproc_get_io_with_da(struct remoteproc *rproc,
|
|
metal_phys_addr_t da,
|
|
unsigned long *offset);
|
|
|
|
/**
|
|
* remoteproc_get_io_with_va
|
|
*
|
|
* get remoteproc memory I/O region with virtual address
|
|
*
|
|
* @rproc - pointer to the remote processor
|
|
* @va - virtual address
|
|
*
|
|
* returns metal I/O region pointer, NULL for failure
|
|
*/
|
|
struct metal_io_region *
|
|
remoteproc_get_io_with_va(struct remoteproc *rproc,
|
|
void *va);
|
|
|
|
/**
|
|
* remoteproc_mmap
|
|
*
|
|
* remoteproc mmap memory
|
|
*
|
|
* @rproc - pointer to the remote processor
|
|
* @pa - physical address pointer
|
|
* @da - device address pointer
|
|
* @size - size of the memory
|
|
* @attribute - memory attribute
|
|
* @io - pointer to the I/O region
|
|
*
|
|
* returns pointer to the memory
|
|
*/
|
|
void *remoteproc_mmap(struct remoteproc *rproc,
|
|
metal_phys_addr_t *pa, metal_phys_addr_t *da,
|
|
size_t size, unsigned int attribute,
|
|
struct metal_io_region **io);
|
|
|
|
/**
|
|
* remoteproc_set_rsc_table
|
|
*
|
|
* Parse and set resource table of remoteproc
|
|
*
|
|
* @rproc - pointer to remoteproc instance
|
|
* @rsc_table - pointer to resource table
|
|
* @rsc_size - resource table size
|
|
*
|
|
* returns 0 for success and negative value for errors
|
|
*/
|
|
int remoteproc_set_rsc_table(struct remoteproc *rproc,
|
|
struct resource_table *rsc_table,
|
|
size_t rsc_size);
|
|
|
|
/**
|
|
* remoteproc_config
|
|
*
|
|
* This function configures the remote processor to get it
|
|
* ready to load and run executable.
|
|
*
|
|
* @rproc - pointer to remoteproc instance to start
|
|
* @data - configuration data
|
|
*
|
|
* returns 0 for success and negative value for errors
|
|
*/
|
|
int remoteproc_config(struct remoteproc *rproc, void *data);
|
|
|
|
/**
|
|
* remoteproc_start
|
|
*
|
|
* This function starts the remote processor.
|
|
* It assumes the firmware is already loaded,
|
|
*
|
|
* @rproc - pointer to remoteproc instance to start
|
|
*
|
|
* returns 0 for success and negative value for errors
|
|
*/
|
|
int remoteproc_start(struct remoteproc *rproc);
|
|
|
|
/**
|
|
* remoteproc_stop
|
|
*
|
|
* This function stops the remote processor but it
|
|
* will not release its resource.
|
|
*
|
|
* @rproc - pointer to remoteproc instance
|
|
*
|
|
* returns 0 for success and negative value for errors
|
|
*/
|
|
int remoteproc_stop(struct remoteproc *rproc);
|
|
|
|
/**
|
|
* remoteproc_shutdown
|
|
*
|
|
* This function shutdown the remote processor and
|
|
* release its resources.
|
|
*
|
|
* @rproc - pointer to remoteproc instance
|
|
*
|
|
* returns 0 for success and negative value for errors
|
|
*/
|
|
int remoteproc_shutdown(struct remoteproc *rproc);
|
|
|
|
/**
|
|
* remoteproc_load
|
|
*
|
|
* load executable, it expects the user application defines how to
|
|
* open the executable file and how to get data from the executable file
|
|
* and how to load data to the target memory.
|
|
*
|
|
* @rproc: pointer to the remoteproc instance
|
|
* @path: optional path to the image file
|
|
* @store: pointer to user defined image store argument
|
|
* @store_ops: pointer to image store operations
|
|
* @image_info: pointer to memory which stores image information used
|
|
* by remoteproc loader
|
|
*
|
|
* return 0 for success and negative value for failure
|
|
*/
|
|
int remoteproc_load(struct remoteproc *rproc, const char *path,
|
|
void *store, struct image_store_ops *store_ops,
|
|
void **img_info);
|
|
|
|
/**
|
|
* remoteproc_load_noblock
|
|
*
|
|
* load executable, it expects the caller has loaded image data to local
|
|
* memory and passed to the this function. If the function needs more
|
|
* image data it will return the next expected image data offset and
|
|
* the next expected image data length. If the function requires the
|
|
* caller to download image data to the target memory, it will also
|
|
* return the target physical address besides the offset and length.
|
|
* This function can be used to load firmware in stream mode. In this
|
|
* mode, you cannot do seek to the executable file. If the executable
|
|
* is ELF, it cannot get the resource table section before it loads
|
|
* the full ELF file. Furthermore, application usually don't store
|
|
* the data which is loaded to local memory in streaming mode, and
|
|
* thus, in this mode, it will load the binary to the target memory
|
|
* before it gets the resource table. And thus, when calling this function
|
|
* don't put the target executable memory in the resource table, as
|
|
* this function will parse the resource table after it loads the binary
|
|
* to target memory.
|
|
*
|
|
* @rproc: pointer to the remoteproc instance
|
|
* @img_data: pointer to image data for remoteproc loader to parse
|
|
* @offset: image data offset to the beginning of the image file
|
|
* @len: image data length
|
|
* @image_info: pointer to memory which stores image information used
|
|
* by remoteproc loader
|
|
* @pa: pointer to the target memory physical address. If the next expected
|
|
* data doesn't need to load to the target memory, the function will
|
|
* set it to ANY.
|
|
* @io: pointer to the io region. If the next expected
|
|
* data doesn't need to load to the target memory, the function will
|
|
* set it to NULL.
|
|
* @noffset: pointer to the next image data offset to the beginning of
|
|
* the image file needs to load to local or to the target
|
|
* memory.
|
|
* @nlen: pointer to the next image data length needs to load to local
|
|
* or to the target memory.
|
|
* @nmlen: pointer to the memory size. It is only used when the next
|
|
* expected data is going to be loaded to the target memory. E.g.
|
|
* in ELF, it is possible that loadable segment in memory is
|
|
* larger that the segment data in the ELF file. In this case,
|
|
* application will need to pad the rest of the memory with
|
|
* padding.
|
|
* @padding: pointer to the padding value. It is only used when the next
|
|
* expected data is going to be loaded to the target memory.
|
|
* and the target memory size is larger than the segment data in
|
|
* the executable file.
|
|
*
|
|
* return 0 for success and negative value for failure
|
|
*/
|
|
int remoteproc_load_noblock(struct remoteproc *rproc,
|
|
const void *img_data, size_t offset, size_t len,
|
|
void **img_info,
|
|
metal_phys_addr_t *pa, struct metal_io_region **io,
|
|
size_t *noffset, size_t *nlen,
|
|
size_t *nmlen, unsigned char *padding);
|
|
|
|
/**
|
|
* remoteproc_allocate_id
|
|
*
|
|
* allocate notifyid for resource
|
|
*
|
|
* @rproc - pointer to the remoteproc instance
|
|
* @start - start of the id range
|
|
* @end - end of the id range
|
|
*
|
|
* return allocated notify id
|
|
*/
|
|
unsigned int remoteproc_allocate_id(struct remoteproc *rproc,
|
|
unsigned int start,
|
|
unsigned int end);
|
|
|
|
/* remoteproc_create_virtio
|
|
*
|
|
* create virtio device, it returns pointer to the created virtio device.
|
|
*
|
|
* @rproc: pointer to the remoteproc instance
|
|
* @vdev_id: virtio device ID
|
|
* @role: virtio device role
|
|
* @rst_cb: virtio device reset callback
|
|
*
|
|
* return pointer to the created virtio device, NULL for failure.
|
|
*/
|
|
struct virtio_device *
|
|
remoteproc_create_virtio(struct remoteproc *rproc,
|
|
int vdev_id, unsigned int role,
|
|
void (*rst_cb)(struct virtio_device *vdev));
|
|
|
|
/* remoteproc_remove_virtio
|
|
*
|
|
* Remove virtio device
|
|
*
|
|
* @rproc: pointer to the remoteproc instance
|
|
* @vdev: pointer to the virtio device
|
|
*
|
|
*/
|
|
void remoteproc_remove_virtio(struct remoteproc *rproc,
|
|
struct virtio_device *vdev);
|
|
|
|
/* remoteproc_get_notification
|
|
*
|
|
* remoteproc is got notified, it will check its subdevices
|
|
* for the notification
|
|
*
|
|
* @rproc - pointer to the remoteproc instance
|
|
* @notifyid - notification id
|
|
*
|
|
* return 0 for succeed, negative value for failure
|
|
*/
|
|
int remoteproc_get_notification(struct remoteproc *rproc,
|
|
uint32_t notifyid);
|
|
#if defined __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* REMOTEPROC_H_ */
|