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 */
49