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| author | Suravee Suthikulpanit <suravee.suthikulpanit@amd.com> | 2017-02-24 02:48:19 -0600 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2017-03-30 09:53:55 +0200 |
| commit | 1650dfd1a9bcde8fcfaab776887bb6f4e91830c3 (patch) | |
| tree | 7a67dd0356995ea7f9bc0c90ee6c4e0e12049437 /arch/x86/events/amd/iommu.h | |
| parent | f5863a00e73c432b91e4efe1d68778b4ace6a892 (diff) | |
| download | linux-1650dfd1a9bcde8fcfaab776887bb6f4e91830c3.tar.bz2 | |
x86/events, drivers/amd/iommu: Prepare for multiple IOMMUs support
Currently, amd_iommu_pc_get_set_reg_val() cannot support multiple
IOMMUs. Modify it to allow callers to specify an IOMMU. This is in
preparation for supporting multiple IOMMUs.
Signed-off-by: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Jörg Rödel <joro@8bytes.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Cc: iommu@lists.linux-foundation.org
Link: http://lkml.kernel.org/r/1487926102-13073-8-git-send-email-Suravee.Suthikulpanit@amd.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/events/amd/iommu.h')
| -rw-r--r-- | arch/x86/events/amd/iommu.h | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/arch/x86/events/amd/iommu.h b/arch/x86/events/amd/iommu.h index b775107c221e..62e0702c4374 100644 --- a/arch/x86/events/amd/iommu.h +++ b/arch/x86/events/amd/iommu.h @@ -24,6 +24,8 @@ #define PC_MAX_SPEC_BNKS 64 #define PC_MAX_SPEC_CNTRS 16 +struct amd_iommu; + /* amd_iommu_init.c external support functions */ extern int amd_iommu_get_num_iommus(void); @@ -33,8 +35,11 @@ extern u8 amd_iommu_pc_get_max_banks(unsigned int idx); extern u8 amd_iommu_pc_get_max_counters(unsigned int idx); -extern int amd_iommu_pc_get_set_reg_val(u16 devid, u8 bank, u8 cntr, - u8 fxn, u64 *value, bool is_write); +extern int amd_iommu_pc_set_reg(struct amd_iommu *iommu, u8 bank, u8 cntr, + u8 fxn, u64 *value); + +extern int amd_iommu_pc_get_reg(struct amd_iommu *iommu, u8 bank, u8 cntr, + u8 fxn, u64 *value); extern struct amd_iommu *get_amd_iommu(int idx); |