linux/drivers/scsi/cxlflash/backend.h
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   1/* SPDX-License-Identifier: GPL-2.0-or-later */
   2/*
   3 * CXL Flash Device Driver
   4 *
   5 * Written by: Matthew R. Ochs <mrochs@linux.vnet.ibm.com>, IBM Corporation
   6 *             Uma Krishnan <ukrishn@linux.vnet.ibm.com>, IBM Corporation
   7 *
   8 * Copyright (C) 2018 IBM Corporation
   9 */
  10
  11#ifndef _CXLFLASH_BACKEND_H
  12#define _CXLFLASH_BACKEND_H
  13
  14extern const struct cxlflash_backend_ops cxlflash_cxl_ops;
  15extern const struct cxlflash_backend_ops cxlflash_ocxl_ops;
  16
  17struct cxlflash_backend_ops {
  18        struct module *module;
  19        void __iomem * (*psa_map)(void *ctx_cookie);
  20        void (*psa_unmap)(void __iomem *addr);
  21        int (*process_element)(void *ctx_cookie);
  22        int (*map_afu_irq)(void *ctx_cookie, int num, irq_handler_t handler,
  23                           void *cookie, char *name);
  24        void (*unmap_afu_irq)(void *ctx_cookie, int num, void *cookie);
  25        u64 (*get_irq_objhndl)(void *ctx_cookie, int irq);
  26        int (*start_context)(void *ctx_cookie);
  27        int (*stop_context)(void *ctx_cookie);
  28        int (*afu_reset)(void *ctx_cookie);
  29        void (*set_master)(void *ctx_cookie);
  30        void * (*get_context)(struct pci_dev *dev, void *afu_cookie);
  31        void * (*dev_context_init)(struct pci_dev *dev, void *afu_cookie);
  32        int (*release_context)(void *ctx_cookie);
  33        void (*perst_reloads_same_image)(void *afu_cookie, bool image);
  34        ssize_t (*read_adapter_vpd)(struct pci_dev *dev, void *buf,
  35                                    size_t count);
  36        int (*allocate_afu_irqs)(void *ctx_cookie, int num);
  37        void (*free_afu_irqs)(void *ctx_cookie);
  38        void * (*create_afu)(struct pci_dev *dev);
  39        void (*destroy_afu)(void *afu_cookie);
  40        struct file * (*get_fd)(void *ctx_cookie, struct file_operations *fops,
  41                                int *fd);
  42        void * (*fops_get_context)(struct file *file);
  43        int (*start_work)(void *ctx_cookie, u64 irqs);
  44        int (*fd_mmap)(struct file *file, struct vm_area_struct *vm);
  45        int (*fd_release)(struct inode *inode, struct file *file);
  46};
  47
  48#endif /* _CXLFLASH_BACKEND_H */
  49
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