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 */ 53