drivers/scsi/cxlflash/backend.h

   1 /*
   2  * CXL Flash Device Driver
   3  *
   4  * Written by: Matthew R. Ochs <mrochs@linux.vnet.ibm.com>, IBM Corporation
   5  *             Uma Krishnan <ukrishn@linux.vnet.ibm.com>, IBM Corporation
   6  *
   7  * Copyright (C) 2018 IBM Corporation
   8  *
   9  * This program is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU General Public License
  11  * as published by the Free Software Foundation; either version
  12  * 2 of the License, or (at your option) any later version.
  13  */
  14
  15 #ifndef _CXLFLASH_BACKEND_H
  16 #define _CXLFLASH_BACKEND_H
  17
  18 extern const struct cxlflash_backend_ops cxlflash_cxl_ops;
  19 extern const struct cxlflash_backend_ops cxlflash_ocxl_ops;
  20
  21 struct cxlflash_backend_ops {
  22         struct module *module;
  23         void __iomem * (*psa_map)(void *ctx_cookie);
  24         void (*psa_unmap)(void __iomem *addr);
  25         int (*process_element)(void *ctx_cookie);
  26         int (*map_afu_irq)(void *ctx_cookie, int num, irq_handler_t handler,
  27                            void *cookie, char *name);
  28         void (*unmap_afu_irq)(void *ctx_cookie, int num, void *cookie);
  29         u64 (*get_irq_objhndl)(void *ctx_cookie, int irq);
  30         int (*start_context)(void *ctx_cookie);
  31         int (*stop_context)(void *ctx_cookie);
  32         int (*afu_reset)(void *ctx_cookie);
  33         void (*set_master)(void *ctx_cookie);
  34         void * (*get_context)(struct pci_dev *dev, void *afu_cookie);
  35         void * (*dev_context_init)(struct pci_dev *dev, void *afu_cookie);
  36         int (*release_context)(void *ctx_cookie);
  37         void (*perst_reloads_same_image)(void *afu_cookie, bool image);
  38         ssize_t (*read_adapter_vpd)(struct pci_dev *dev, void *buf,
  39                                     size_t count);
  40         int (*allocate_afu_irqs)(void *ctx_cookie, int num);
  41         void (*free_afu_irqs)(void *ctx_cookie);
  42         void * (*create_afu)(struct pci_dev *dev);
  43         void (*destroy_afu)(void *afu_cookie);
  44         struct file * (*get_fd)(void *ctx_cookie, struct file_operations *fops,
  45                                 int *fd);
  46         void * (*fops_get_context)(struct file *file);
  47         int (*start_work)(void *ctx_cookie, u64 irqs);
  48         int (*fd_mmap)(struct file *file, struct vm_area_struct *vm);
  49         int (*fd_release)(struct inode *inode, struct file *file);
  50 };
  51
  52 #endif /* _CXLFLASH_BACKEND_H */