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![Thomas Gleixner](/assets/img/avatar_default.png)
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
177 lines
4.3 KiB
C
177 lines
4.3 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* CXL Flash Device Driver
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*
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* Written by: Matthew R. Ochs <mrochs@linux.vnet.ibm.com>, IBM Corporation
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* Uma Krishnan <ukrishn@linux.vnet.ibm.com>, IBM Corporation
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*
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* Copyright (C) 2018 IBM Corporation
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*/
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#include <misc/cxl.h>
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#include "backend.h"
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/*
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* The following routines map the cxlflash backend operations to existing CXL
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* kernel API function and are largely simple shims that provide an abstraction
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* for converting generic context and AFU cookies into cxl_context or cxl_afu
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* pointers.
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*/
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static void __iomem *cxlflash_psa_map(void *ctx_cookie)
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{
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return cxl_psa_map(ctx_cookie);
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}
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static void cxlflash_psa_unmap(void __iomem *addr)
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{
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cxl_psa_unmap(addr);
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}
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static int cxlflash_process_element(void *ctx_cookie)
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{
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return cxl_process_element(ctx_cookie);
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}
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static int cxlflash_map_afu_irq(void *ctx_cookie, int num,
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irq_handler_t handler, void *cookie, char *name)
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{
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return cxl_map_afu_irq(ctx_cookie, num, handler, cookie, name);
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}
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static void cxlflash_unmap_afu_irq(void *ctx_cookie, int num, void *cookie)
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{
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cxl_unmap_afu_irq(ctx_cookie, num, cookie);
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}
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static u64 cxlflash_get_irq_objhndl(void *ctx_cookie, int irq)
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{
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/* Dummy fop for cxl */
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return 0;
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}
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static int cxlflash_start_context(void *ctx_cookie)
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{
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return cxl_start_context(ctx_cookie, 0, NULL);
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}
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static int cxlflash_stop_context(void *ctx_cookie)
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{
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return cxl_stop_context(ctx_cookie);
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}
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static int cxlflash_afu_reset(void *ctx_cookie)
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{
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return cxl_afu_reset(ctx_cookie);
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}
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static void cxlflash_set_master(void *ctx_cookie)
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{
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cxl_set_master(ctx_cookie);
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}
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static void *cxlflash_get_context(struct pci_dev *dev, void *afu_cookie)
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{
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return cxl_get_context(dev);
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}
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static void *cxlflash_dev_context_init(struct pci_dev *dev, void *afu_cookie)
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{
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return cxl_dev_context_init(dev);
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}
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static int cxlflash_release_context(void *ctx_cookie)
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{
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return cxl_release_context(ctx_cookie);
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}
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static void cxlflash_perst_reloads_same_image(void *afu_cookie, bool image)
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{
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cxl_perst_reloads_same_image(afu_cookie, image);
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}
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static ssize_t cxlflash_read_adapter_vpd(struct pci_dev *dev,
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void *buf, size_t count)
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{
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return cxl_read_adapter_vpd(dev, buf, count);
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}
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static int cxlflash_allocate_afu_irqs(void *ctx_cookie, int num)
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{
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return cxl_allocate_afu_irqs(ctx_cookie, num);
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}
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static void cxlflash_free_afu_irqs(void *ctx_cookie)
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{
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cxl_free_afu_irqs(ctx_cookie);
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}
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static void *cxlflash_create_afu(struct pci_dev *dev)
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{
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return cxl_pci_to_afu(dev);
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}
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static void cxlflash_destroy_afu(void *afu)
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{
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/* Dummy fop for cxl */
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}
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static struct file *cxlflash_get_fd(void *ctx_cookie,
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struct file_operations *fops, int *fd)
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{
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return cxl_get_fd(ctx_cookie, fops, fd);
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}
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static void *cxlflash_fops_get_context(struct file *file)
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{
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return cxl_fops_get_context(file);
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}
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static int cxlflash_start_work(void *ctx_cookie, u64 irqs)
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{
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struct cxl_ioctl_start_work work = { 0 };
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work.num_interrupts = irqs;
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work.flags = CXL_START_WORK_NUM_IRQS;
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return cxl_start_work(ctx_cookie, &work);
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}
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static int cxlflash_fd_mmap(struct file *file, struct vm_area_struct *vm)
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{
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return cxl_fd_mmap(file, vm);
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}
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static int cxlflash_fd_release(struct inode *inode, struct file *file)
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{
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return cxl_fd_release(inode, file);
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}
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const struct cxlflash_backend_ops cxlflash_cxl_ops = {
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.module = THIS_MODULE,
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.psa_map = cxlflash_psa_map,
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.psa_unmap = cxlflash_psa_unmap,
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.process_element = cxlflash_process_element,
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.map_afu_irq = cxlflash_map_afu_irq,
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.unmap_afu_irq = cxlflash_unmap_afu_irq,
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.get_irq_objhndl = cxlflash_get_irq_objhndl,
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.start_context = cxlflash_start_context,
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.stop_context = cxlflash_stop_context,
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.afu_reset = cxlflash_afu_reset,
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.set_master = cxlflash_set_master,
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.get_context = cxlflash_get_context,
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.dev_context_init = cxlflash_dev_context_init,
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.release_context = cxlflash_release_context,
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.perst_reloads_same_image = cxlflash_perst_reloads_same_image,
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.read_adapter_vpd = cxlflash_read_adapter_vpd,
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.allocate_afu_irqs = cxlflash_allocate_afu_irqs,
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.free_afu_irqs = cxlflash_free_afu_irqs,
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.create_afu = cxlflash_create_afu,
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.destroy_afu = cxlflash_destroy_afu,
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.get_fd = cxlflash_get_fd,
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.fops_get_context = cxlflash_fops_get_context,
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.start_work = cxlflash_start_work,
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.fd_mmap = cxlflash_fd_mmap,
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.fd_release = cxlflash_fd_release,
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};
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