linux-kernel - RE: [PATCH v5 14/16] asm-generic/hyperv: import data structures for mapping device interrupts

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Date:   Tue, 26 Jan 2021 01:27:44 +0000
From:   Michael Kelley <mikelley@...rosoft.com>
To:     Wei Liu <wei.liu@...nel.org>,
        Linux on Hyper-V List <linux-hyperv@...r.kernel.org>
CC:     "virtualization@...ts.linux-foundation.org" 
        <virtualization@...ts.linux-foundation.org>,
        Linux Kernel List <linux-kernel@...r.kernel.org>,
        Vineeth Pillai <viremana@...ux.microsoft.com>,
        Sunil Muthuswamy <sunilmut@...rosoft.com>,
        Nuno Das Neves <nunodasneves@...ux.microsoft.com>,
        "pasha.tatashin@...een.com" <pasha.tatashin@...een.com>,
        KY Srinivasan <kys@...rosoft.com>,
        Haiyang Zhang <haiyangz@...rosoft.com>,
        Stephen Hemminger <sthemmin@...rosoft.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        "maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)" <x86@...nel.org>,
        "H. Peter Anvin" <hpa@...or.com>, Arnd Bergmann <arnd@...db.de>,
        "open list:GENERIC INCLUDE/ASM HEADER FILES" 
        <linux-arch@...r.kernel.org>
Subject: RE: [PATCH v5 14/16] asm-generic/hyperv: import data structures for
 mapping device interrupts

From: Wei Liu <wei.liu@...nel.org> Sent: Wednesday, January 20, 2021 4:01 AM
> 
> Signed-off-by: Sunil Muthuswamy <sunilmut@...rosoft.com>
> Co-Developed-by: Sunil Muthuswamy <sunilmut@...rosoft.com>
> Signed-off-by: Wei Liu <wei.liu@...nel.org>
> ---
>  arch/x86/include/asm/hyperv-tlfs.h | 13 +++++++++++
>  include/asm-generic/hyperv-tlfs.h  | 36 ++++++++++++++++++++++++++++++
>  2 files changed, 49 insertions(+)
> 
> diff --git a/arch/x86/include/asm/hyperv-tlfs.h b/arch/x86/include/asm/hyperv-tlfs.h
> index 204010350604..ab7d6cde548d 100644
> --- a/arch/x86/include/asm/hyperv-tlfs.h
> +++ b/arch/x86/include/asm/hyperv-tlfs.h
> @@ -533,6 +533,19 @@ struct hv_partition_assist_pg {
>  	u32 tlb_lock_count;
>  };
> 
> +enum hv_interrupt_type {
> +	HV_X64_INTERRUPT_TYPE_FIXED             = 0x0000,
> +	HV_X64_INTERRUPT_TYPE_LOWESTPRIORITY    = 0x0001,
> +	HV_X64_INTERRUPT_TYPE_SMI               = 0x0002,
> +	HV_X64_INTERRUPT_TYPE_REMOTEREAD        = 0x0003,
> +	HV_X64_INTERRUPT_TYPE_NMI               = 0x0004,
> +	HV_X64_INTERRUPT_TYPE_INIT              = 0x0005,
> +	HV_X64_INTERRUPT_TYPE_SIPI              = 0x0006,
> +	HV_X64_INTERRUPT_TYPE_EXTINT            = 0x0007,
> +	HV_X64_INTERRUPT_TYPE_LOCALINT0         = 0x0008,
> +	HV_X64_INTERRUPT_TYPE_LOCALINT1         = 0x0009,
> +	HV_X64_INTERRUPT_TYPE_MAXIMUM           = 0x000A,
> +};
> 
>  #include <asm-generic/hyperv-tlfs.h>
> 
> diff --git a/include/asm-generic/hyperv-tlfs.h b/include/asm-generic/hyperv-tlfs.h
> index 42ff1326c6bd..07efe0131fe3 100644
> --- a/include/asm-generic/hyperv-tlfs.h
> +++ b/include/asm-generic/hyperv-tlfs.h
> @@ -152,6 +152,8 @@ struct ms_hyperv_tsc_page {
>  #define HVCALL_RETRIEVE_DEBUG_DATA		0x006a
>  #define HVCALL_RESET_DEBUG_SESSION		0x006b
>  #define HVCALL_ADD_LOGICAL_PROCESSOR		0x0076
> +#define HVCALL_MAP_DEVICE_INTERRUPT		0x007c
> +#define HVCALL_UNMAP_DEVICE_INTERRUPT		0x007d
>  #define HVCALL_RETARGET_INTERRUPT		0x007e
>  #define HVCALL_FLUSH_GUEST_PHYSICAL_ADDRESS_SPACE 0x00af
>  #define HVCALL_FLUSH_GUEST_PHYSICAL_ADDRESS_LIST 0x00b0
> @@ -702,4 +704,38 @@ union hv_device_id {
>  	} acpi;
>  } __packed;
> 
> +enum hv_interrupt_trigger_mode {
> +	HV_INTERRUPT_TRIGGER_MODE_EDGE = 0,
> +	HV_INTERRUPT_TRIGGER_MODE_LEVEL = 1,
> +};
> +
> +struct hv_device_interrupt_descriptor {
> +	u32 interrupt_type;
> +	u32 trigger_mode;
> +	u32 vector_count;
> +	u32 reserved;
> +	struct hv_device_interrupt_target target;
> +} __packed;
> +
> +struct hv_input_map_device_interrupt {
> +	u64 partition_id;
> +	u64 device_id;
> +	u64 flags;
> +	struct hv_interrupt_entry logical_interrupt_entry;
> +	struct hv_device_interrupt_descriptor interrupt_descriptor;
> +} __packed;
> +
> +struct hv_output_map_device_interrupt {
> +	struct hv_interrupt_entry interrupt_entry;
> +} __packed;
> +
> +struct hv_input_unmap_device_interrupt {
> +	u64 partition_id;
> +	u64 device_id;
> +	struct hv_interrupt_entry interrupt_entry;
> +} __packed;
> +
> +#define HV_SOURCE_SHADOW_NONE               0x0
> +#define HV_SOURCE_SHADOW_BRIDGE_BUS_RANGE   0x1
> +
>  #endif
> --
> 2.20.1

Reviewed-by: Michael Kelley <mikelley@...rosoft.com>