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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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C
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162/* SPDX-License-Identifier: GPL-2.0-or-later */#ifndef _LINUX_UACCE_H#define _LINUX_UACCE_H
#include <linux/cdev.h>#include <uapi/misc/uacce/uacce.h>
#define UACCE_NAME "uacce"#define UACCE_MAX_REGION 2#define UACCE_MAX_NAME_SIZE 64#define UACCE_MAX_ERR_THRESHOLD 65535
struct uacce_queue;struct uacce_device;
/** * struct uacce_qfile_region - structure of queue file region * @type: type of the region */struct uacce_qfile_region { enum uacce_qfrt type;};
/** * struct uacce_ops - uacce device operations * @get_available_instances: get available instances left of the device * @get_queue: get a queue from the device * @put_queue: free a queue to the device * @start_queue: make the queue start work after get_queue * @stop_queue: make the queue stop work before put_queue * @is_q_updated: check whether the task is finished * @mmap: mmap addresses of queue to user space * @ioctl: ioctl for user space users of the queue * @get_isolate_state: get the device state after set the isolate strategy * @isolate_err_threshold_write: stored the isolate error threshold to the device * @isolate_err_threshold_read: read the isolate error threshold value from the device */struct uacce_ops { int (*get_available_instances)(struct uacce_device *uacce); int (*get_queue)(struct uacce_device *uacce, unsigned long arg, struct uacce_queue *q); void (*put_queue)(struct uacce_queue *q); int (*start_queue)(struct uacce_queue *q); void (*stop_queue)(struct uacce_queue *q); int (*is_q_updated)(struct uacce_queue *q); int (*mmap)(struct uacce_queue *q, struct vm_area_struct *vma, struct uacce_qfile_region *qfr); long (*ioctl)(struct uacce_queue *q, unsigned int cmd, unsigned long arg); enum uacce_dev_state (*get_isolate_state)(struct uacce_device *uacce); int (*isolate_err_threshold_write)(struct uacce_device *uacce, u32 num); u32 (*isolate_err_threshold_read)(struct uacce_device *uacce);};
/** * struct uacce_interface - interface required for uacce_register() * @name: the uacce device name. Will show up in sysfs * @flags: uacce device attributes * @ops: pointer to the struct uacce_ops */struct uacce_interface { char name[UACCE_MAX_NAME_SIZE]; unsigned int flags; const struct uacce_ops *ops;};
enum uacce_dev_state { UACCE_DEV_NORMAL, UACCE_DEV_ISOLATE,};
enum uacce_q_state { UACCE_Q_ZOMBIE = 0, UACCE_Q_INIT, UACCE_Q_STARTED,};
/** * struct uacce_queue * @uacce: pointer to uacce * @priv: private pointer * @wait: wait queue head * @list: index into uacce queues list * @qfrs: pointer of qfr regions * @mutex: protects queue state * @state: queue state machine * @pasid: pasid associated to the mm * @handle: iommu_sva handle returned by iommu_sva_bind_device() * @mapping: user space mapping of the queue */struct uacce_queue { struct uacce_device *uacce; void *priv; wait_queue_head_t wait; struct list_head list; struct uacce_qfile_region *qfrs[UACCE_MAX_REGION]; struct mutex mutex; enum uacce_q_state state; u32 pasid; struct iommu_sva *handle; struct address_space *mapping;};
/** * struct uacce_device * @algs: supported algorithms * @api_ver: api version * @ops: pointer to the struct uacce_ops * @qf_pg_num: page numbers of the queue file regions * @parent: pointer to the parent device * @is_vf: whether virtual function * @flags: uacce attributes * @dev_id: id of the uacce device * @cdev: cdev of the uacce * @dev: dev of the uacce * @mutex: protects uacce operation * @priv: private pointer of the uacce * @queues: list of queues */struct uacce_device { const char *algs; const char *api_ver; const struct uacce_ops *ops; unsigned long qf_pg_num[UACCE_MAX_REGION]; struct device *parent; bool is_vf; u32 flags; u32 dev_id; struct cdev *cdev; struct device dev; struct mutex mutex; void *priv; struct list_head queues;};
#if IS_ENABLED(CONFIG_UACCE)
struct uacce_device *uacce_alloc(struct device *parent, struct uacce_interface *interface);int uacce_register(struct uacce_device *uacce);void uacce_remove(struct uacce_device *uacce);
#else /* CONFIG_UACCE */
static inlinestruct uacce_device *uacce_alloc(struct device *parent, struct uacce_interface *interface){ return ERR_PTR(-ENODEV);}
static inline int uacce_register(struct uacce_device *uacce){ return -EINVAL;}
static inline void uacce_remove(struct uacce_device *uacce) {}
#endif /* CONFIG_UACCE */
#endif /* _LINUX_UACCE_H */