root/drivers/scsi/cxlflash/backend.h

INCLUDED FROM

   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 
  14 extern const struct cxlflash_backend_ops cxlflash_cxl_ops;
  15 extern const struct cxlflash_backend_ops cxlflash_ocxl_ops;
  16 
  17 struct 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 */