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author | Sunil Muthuswamy <sunilmut@microsoft.com> | 2022-01-05 22:32:35 +0300 |
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committer | Bjorn Helgaas <bhelgaas@google.com> | 2022-01-12 17:21:54 +0300 |
commit | 831c1ae725f7d2f8f858b0840692b48e75b49331 (patch) | |
tree | d302828f165b0f1b36f7182c429a0a4317b4b7f5 /arch/x86/include/asm/hyperv-tlfs.h | |
parent | fa55b7dcdc43c1aa1ba12bca9d2dd4318c2a0dbf (diff) | |
download | linux-831c1ae725f7d2f8f858b0840692b48e75b49331.tar.xz |
PCI: hv: Make the code arch neutral by adding arch specific interfaces
Encapsulate arch dependencies in Hyper-V vPCI through a set of
arch-dependent interfaces. Adding these arch specific interfaces will
allow for an implementation for other architectures, such as arm64.
There are no functional changes expected from this patch.
Link: https://lore.kernel.org/r/1641411156-31705-2-git-send-email-sunilmut@linux.microsoft.com
Signed-off-by: Sunil Muthuswamy <sunilmut@microsoft.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Boqun Feng <boqun.feng@gmail.com>
Reviewed-by: Marc Zyngier <maz@kernel.org>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Diffstat (limited to 'arch/x86/include/asm/hyperv-tlfs.h')
-rw-r--r-- | arch/x86/include/asm/hyperv-tlfs.h | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/arch/x86/include/asm/hyperv-tlfs.h b/arch/x86/include/asm/hyperv-tlfs.h index 381e88122a5f..0a9407dc0859 100644 --- a/arch/x86/include/asm/hyperv-tlfs.h +++ b/arch/x86/include/asm/hyperv-tlfs.h @@ -602,6 +602,39 @@ enum hv_interrupt_type { HV_X64_INTERRUPT_TYPE_MAXIMUM = 0x000A, }; +union hv_msi_address_register { + u32 as_uint32; + struct { + u32 reserved1:2; + u32 destination_mode:1; + u32 redirection_hint:1; + u32 reserved2:8; + u32 destination_id:8; + u32 msi_base:12; + }; +} __packed; + +union hv_msi_data_register { + u32 as_uint32; + struct { + u32 vector:8; + u32 delivery_mode:3; + u32 reserved1:3; + u32 level_assert:1; + u32 trigger_mode:1; + u32 reserved2:16; + }; +} __packed; + +/* HvRetargetDeviceInterrupt hypercall */ +union hv_msi_entry { + u64 as_uint64; + struct { + union hv_msi_address_register address; + union hv_msi_data_register data; + } __packed; +}; + #include <asm-generic/hyperv-tlfs.h> #endif |