card_dev.c (110080cea0d0e4dfdb0b536e7f8a5633ead6a781) card_dev.c (eb3ae0aa382e03a99a34edc7b42302ea342f1f60)
1// SPDX-License-Identifier: GPL-2.0-only
1/**
2 * IBM Accelerator Family 'GenWQE'
3 *
4 * (C) Copyright IBM Corp. 2013
5 *
6 * Author: Frank Haverkamp <haver@linux.vnet.ibm.com>
7 * Author: Joerg-Stephan Vogt <jsvogt@de.ibm.com>
8 * Author: Michael Jung <mijung@gmx.net>
9 * Author: Michael Ruettger <michael@ibmra.de>
2/**
3 * IBM Accelerator Family 'GenWQE'
4 *
5 * (C) Copyright IBM Corp. 2013
6 *
7 * Author: Frank Haverkamp <haver@linux.vnet.ibm.com>
8 * Author: Joerg-Stephan Vogt <jsvogt@de.ibm.com>
9 * Author: Michael Jung <mijung@gmx.net>
10 * Author: Michael Ruettger <michael@ibmra.de>
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License (version 2 only)
13 * as published by the Free Software Foundation.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 */
20
21/*
22 * Character device representation of the GenWQE device. This allows
23 * user-space applications to communicate with the card.
24 */
25
26#include <linux/kernel.h>

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775 struct genwqe_dev *cd = cfile->cd;
776 struct pci_dev *pci_dev = cfile->cd->pci_dev;
777 struct dma_mapping *dma_map;
778 unsigned long map_addr;
779 unsigned long map_size;
780
781 if ((m->addr == 0x0) || (m->size == 0))
782 return -EINVAL;
11 */
12
13/*
14 * Character device representation of the GenWQE device. This allows
15 * user-space applications to communicate with the card.
16 */
17
18#include <linux/kernel.h>

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767 struct genwqe_dev *cd = cfile->cd;
768 struct pci_dev *pci_dev = cfile->cd->pci_dev;
769 struct dma_mapping *dma_map;
770 unsigned long map_addr;
771 unsigned long map_size;
772
773 if ((m->addr == 0x0) || (m->size == 0))
774 return -EINVAL;
783 if (m->size > ULONG_MAX - PAGE_SIZE - (m->addr & ~PAGE_MASK))
784 return -EINVAL;
785
786 map_addr = (m->addr & PAGE_MASK);
787 map_size = round_up(m->size + (m->addr & ~PAGE_MASK), PAGE_SIZE);
788
789 dma_map = kzalloc(sizeof(struct dma_mapping), GFP_KERNEL);
790 if (dma_map == NULL)
791 return -ENOMEM;
792

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776 map_addr = (m->addr & PAGE_MASK);
777 map_size = round_up(m->size + (m->addr & ~PAGE_MASK), PAGE_SIZE);
778
779 dma_map = kzalloc(sizeof(struct dma_mapping), GFP_KERNEL);
780 if (dma_map == NULL)
781 return -ENOMEM;
782

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