mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-04 09:59:32 +00:00
![Linus Torvalds](/assets/img/avatar_default.png)
Slightly more changes than usual this time: - KDump Kernel IOMMU take-over code for AMD IOMMU. The code now tries to preserve the mappings of the kernel so that master aborts for devices are avoided. Master aborts cause some devices to fail in the kdump kernel, so this code makes the dump more likely to succeed when AMD IOMMU is enabled. - Common flush queue implementation for IOVA code users. The code is still optional, but AMD and Intel IOMMU drivers had their own implementation which is now unified. - Finish support for iommu-groups. All drivers implement this feature now so that IOMMU core code can rely on it. - Finish support for 'struct iommu_device' in iommu drivers. All drivers now use the interface. - New functions in the IOMMU-API for explicit IO/TLB flushing. This will help to reduce the number of IO/TLB flushes when IOMMU drivers support this interface. - Support for mt2712 in the Mediatek IOMMU driver - New IOMMU driver for QCOM hardware - System PM support for ARM-SMMU - Shutdown method for ARM-SMMU-v3 - Some constification patches - Various other small improvements and fixes -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQIcBAABAgAGBQJZtCFNAAoJECvwRC2XARrjZnQP/AxC/ezQpq82HbegF4sM/cVE Ep7TeTqodEl75FS/6txe2wU0pwodqk/LB9ajfQZUbE1w8vKsNEqi5qf4ZYHGoxYI 5bWyjJBzKIlwENH5lsBpQNt6XLevrYmRsFy7F0tRYy+qPQq8k+js2i7/XkCL3q7L 3xklF847RRoITaTOhhaROx1pF23dSMEsS2XGuWHcZfjORtep4wcFKzd/2SvlCWCo P2bRU7jBzfJuuGSA80gaiUbDmrULTUfYuZNp7njASzCgsDmagERtvDEpdoXPNNSp u6s4LjU1Dp3fgr6g6cFRO7B6JUbWd619nwo9so/c/wZN54yEngBF9EyeeF3mv2O5 ZbM2mOW3RlZcjxFT/AC8G4cZwwP6MpCEQOdqknoqc6ZQwcDqwN0o9I4+po0wsiAU 89ijZZe9Mx0p9lNpihaBEB1erAUWPo5Obh62zo80W3h6x9WzkGQWM+PyFK2DYoaC 8biEZzcc21sLEHvXQkcEGJSKrihHr9sluOqvxmCw5QAkYIFAeZRoeH7JtZWjVCnr T3XvaG1G1Aw6tS7ErxufdKawREAGki0Rm9i1baiH9sqNj5rllM01Y+PgU6E21Nbg iZp9gJLjfwM4vhYLlovvQK5PRoOBsCkyCpEI4GJqjLeam5p/WN06CFFf0ifQofYr qDPCVDkWHWV8nugFFKE7 =EVh9 -----END PGP SIGNATURE----- Merge tag 'iommu-updates-v4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu Pull IOMMU updates from Joerg Roedel: "Slightly more changes than usual this time: - KDump Kernel IOMMU take-over code for AMD IOMMU. The code now tries to preserve the mappings of the kernel so that master aborts for devices are avoided. Master aborts cause some devices to fail in the kdump kernel, so this code makes the dump more likely to succeed when AMD IOMMU is enabled. - common flush queue implementation for IOVA code users. The code is still optional, but AMD and Intel IOMMU drivers had their own implementation which is now unified. - finish support for iommu-groups. All drivers implement this feature now so that IOMMU core code can rely on it. - finish support for 'struct iommu_device' in iommu drivers. All drivers now use the interface. - new functions in the IOMMU-API for explicit IO/TLB flushing. This will help to reduce the number of IO/TLB flushes when IOMMU drivers support this interface. - support for mt2712 in the Mediatek IOMMU driver - new IOMMU driver for QCOM hardware - system PM support for ARM-SMMU - shutdown method for ARM-SMMU-v3 - some constification patches - various other small improvements and fixes" * tag 'iommu-updates-v4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (87 commits) iommu/vt-d: Don't be too aggressive when clearing one context entry iommu: Introduce Interface for IOMMU TLB Flushing iommu/s390: Constify iommu_ops iommu/vt-d: Avoid calling virt_to_phys() on null pointer iommu/vt-d: IOMMU Page Request needs to check if address is canonical. arm/tegra: Call bus_set_iommu() after iommu_device_register() iommu/exynos: Constify iommu_ops iommu/ipmmu-vmsa: Make ipmmu_gather_ops const iommu/ipmmu-vmsa: Rereserving a free context before setting up a pagetable iommu/amd: Rename a few flush functions iommu/amd: Check if domain is NULL in get_domain() and return -EBUSY iommu/mediatek: Fix a build warning of BIT(32) in ARM iommu/mediatek: Fix a build fail of m4u_type iommu: qcom: annotate PM functions as __maybe_unused iommu/pamu: Fix PAMU boot crash memory: mtk-smi: Degrade SMI init to module_init iommu/mediatek: Enlarge the validate PA range for 4GB mode iommu/mediatek: Disable iommu clock when system suspend iommu/mediatek: Move pgtable allocation into domain_alloc iommu/mediatek: Merge 2 M4U HWs into one iommu domain ...
102 lines
3.4 KiB
C
102 lines
3.4 KiB
C
/*
|
|
* Copyright (C) 2009-2010 Advanced Micro Devices, Inc.
|
|
* Author: Joerg Roedel <jroedel@suse.de>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License version 2 as published
|
|
* by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
|
|
#ifndef _ASM_X86_AMD_IOMMU_PROTO_H
|
|
#define _ASM_X86_AMD_IOMMU_PROTO_H
|
|
|
|
#include "amd_iommu_types.h"
|
|
|
|
extern int amd_iommu_get_num_iommus(void);
|
|
extern int amd_iommu_init_dma_ops(void);
|
|
extern int amd_iommu_init_passthrough(void);
|
|
extern irqreturn_t amd_iommu_int_thread(int irq, void *data);
|
|
extern irqreturn_t amd_iommu_int_handler(int irq, void *data);
|
|
extern void amd_iommu_apply_erratum_63(u16 devid);
|
|
extern void amd_iommu_reset_cmd_buffer(struct amd_iommu *iommu);
|
|
extern int amd_iommu_init_devices(void);
|
|
extern void amd_iommu_uninit_devices(void);
|
|
extern void amd_iommu_init_notifier(void);
|
|
extern int amd_iommu_init_api(void);
|
|
|
|
/* Needed for interrupt remapping */
|
|
extern int amd_iommu_prepare(void);
|
|
extern int amd_iommu_enable(void);
|
|
extern void amd_iommu_disable(void);
|
|
extern int amd_iommu_reenable(int);
|
|
extern int amd_iommu_enable_faulting(void);
|
|
extern int amd_iommu_guest_ir;
|
|
|
|
/* IOMMUv2 specific functions */
|
|
struct iommu_domain;
|
|
|
|
extern bool amd_iommu_v2_supported(void);
|
|
extern int amd_iommu_register_ppr_notifier(struct notifier_block *nb);
|
|
extern int amd_iommu_unregister_ppr_notifier(struct notifier_block *nb);
|
|
extern void amd_iommu_domain_direct_map(struct iommu_domain *dom);
|
|
extern int amd_iommu_domain_enable_v2(struct iommu_domain *dom, int pasids);
|
|
extern int amd_iommu_flush_page(struct iommu_domain *dom, int pasid,
|
|
u64 address);
|
|
extern int amd_iommu_flush_tlb(struct iommu_domain *dom, int pasid);
|
|
extern int amd_iommu_domain_set_gcr3(struct iommu_domain *dom, int pasid,
|
|
unsigned long cr3);
|
|
extern int amd_iommu_domain_clear_gcr3(struct iommu_domain *dom, int pasid);
|
|
extern struct iommu_domain *amd_iommu_get_v2_domain(struct pci_dev *pdev);
|
|
|
|
#ifdef CONFIG_IRQ_REMAP
|
|
extern int amd_iommu_create_irq_domain(struct amd_iommu *iommu);
|
|
#else
|
|
static inline int amd_iommu_create_irq_domain(struct amd_iommu *iommu)
|
|
{
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
#define PPR_SUCCESS 0x0
|
|
#define PPR_INVALID 0x1
|
|
#define PPR_FAILURE 0xf
|
|
|
|
extern int amd_iommu_complete_ppr(struct pci_dev *pdev, int pasid,
|
|
int status, int tag);
|
|
|
|
static inline bool is_rd890_iommu(struct pci_dev *pdev)
|
|
{
|
|
return (pdev->vendor == PCI_VENDOR_ID_ATI) &&
|
|
(pdev->device == PCI_DEVICE_ID_RD890_IOMMU);
|
|
}
|
|
|
|
static inline bool iommu_feature(struct amd_iommu *iommu, u64 f)
|
|
{
|
|
if (!(iommu->cap & (1 << IOMMU_CAP_EFR)))
|
|
return false;
|
|
|
|
return !!(iommu->features & f);
|
|
}
|
|
|
|
static inline u64 iommu_virt_to_phys(void *vaddr)
|
|
{
|
|
return (u64)__sme_set(virt_to_phys(vaddr));
|
|
}
|
|
|
|
static inline void *iommu_phys_to_virt(unsigned long paddr)
|
|
{
|
|
return phys_to_virt(__sme_clr(paddr));
|
|
}
|
|
|
|
extern bool translation_pre_enabled(struct amd_iommu *iommu);
|
|
extern struct iommu_dev_data *get_dev_data(struct device *dev);
|
|
#endif /* _ASM_X86_AMD_IOMMU_PROTO_H */
|