drivers/iommu/amd_iommu_proto.h

   1 /*
   2  * Copyright (C) 2009-2010 Advanced Micro Devices, Inc.
   3  * Author: Joerg Roedel <joerg.roedel@amd.com>
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 as published
   7  * by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  17  */
  18
  19 #ifndef _ASM_X86_AMD_IOMMU_PROTO_H
  20 #define _ASM_X86_AMD_IOMMU_PROTO_H
  21
  22 #include "amd_iommu_types.h"
  23
  24 extern int amd_iommu_init_dma_ops(void);
  25 extern int amd_iommu_init_passthrough(void);
  26 extern irqreturn_t amd_iommu_int_thread(int irq, void *data);
  27 extern irqreturn_t amd_iommu_int_handler(int irq, void *data);
  28 extern void amd_iommu_apply_erratum_63(u16 devid);
  29 extern void amd_iommu_reset_cmd_buffer(struct amd_iommu *iommu);
  30 extern int amd_iommu_init_devices(void);
  31 extern void amd_iommu_uninit_devices(void);
  32 extern void amd_iommu_init_notifier(void);
  33 extern void amd_iommu_init_api(void);
  34 #ifndef CONFIG_AMD_IOMMU_STATS
  35
  36 static inline void amd_iommu_stats_init(void) { }
  37
  38 #endif /* !CONFIG_AMD_IOMMU_STATS */
  39
  40 static inline bool is_rd890_iommu(struct pci_dev *pdev)
  41 {
  42         return (pdev->vendor == PCI_VENDOR_ID_ATI) &&
  43                (pdev->device == PCI_DEVICE_ID_RD890_IOMMU);
  44 }
  45
  46 static inline bool iommu_feature(struct amd_iommu *iommu, u64 f)
  47 {
  48         if (!(iommu->cap & (1 << IOMMU_CAP_EFR)))
  49                 return false;
  50
  51         return !!(iommu->features & f);
  52 }
  53
  54 #endif /* _ASM_X86_AMD_IOMMU_PROTO_H  */