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From: Julien Grall <julien.grall@arm.com>
To: Shannon Zhao <zhaoshenglong@huawei.com>, xen-devel@lists.xen.org
Cc: stefano.stabellini@citrix.com, shannon.zhao@linaro.org,
	peter.huangpeng@huawei.com
Subject: Re: [PATCH v6 04/22] arm/gic: Add a new callback for creating MADT table for Dom0
Date: Mon, 21 Mar 2016 15:18:39 +0000	[thread overview]
Message-ID: <56F010CF.6030906@arm.com> (raw)
In-Reply-To: <1458207668-12012-5-git-send-email-zhaoshenglong@huawei.com>

Hi Shannon,

On 17/03/2016 09:40, Shannon Zhao wrote:
> From: Shannon Zhao <shannon.zhao@linaro.org>
>
> Add a new member in gic_hw_operations which is used to creat MADT table

s/create/create/

> for Dom0.
>
> Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org>
> Reviewed-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
> ---
>   xen/arch/arm/gic-v2.c     | 34 ++++++++++++++++++++++++++++++++++
>   xen/arch/arm/gic-v3.c     | 47 +++++++++++++++++++++++++++++++++++++++++++++++
>   xen/arch/arm/gic.c        |  5 +++++
>   xen/include/asm-arm/gic.h |  3 +++
>   4 files changed, 89 insertions(+)
>
> diff --git a/xen/arch/arm/gic-v2.c b/xen/arch/arm/gic-v2.c
> index 0fcb894..02db5f2 100644
> --- a/xen/arch/arm/gic-v2.c
> +++ b/xen/arch/arm/gic-v2.c
> @@ -685,6 +685,35 @@ static void __init gicv2_dt_init(void)
>   }
>
>   #ifdef CONFIG_ACPI
> +static u32 gicv2_make_hwdom_madt(const struct domain *d, u32 offset)
> +{
> +    struct acpi_subtable_header *header;
> +    struct acpi_madt_generic_interrupt *host_gicc, *gicc;
> +    u32 i, size, table_len = 0;
> +    u8 *base_ptr = d->arch.efi_acpi_table + offset;
> +
> +    header = acpi_table_get_entry_madt(ACPI_MADT_TYPE_GENERIC_INTERRUPT, 0);
> +    if ( !header )
> +        panic("Can't get GICC entry");

I would prefer if you return an error here. In the future we may want to 
support hardware domain creation later (see the xen option hardware_dom).

> +    host_gicc = container_of(header, struct acpi_madt_generic_interrupt,
> +                             header);
> +
> +    size = sizeof(struct acpi_madt_generic_interrupt);
> +    /* Add Generic Interrupt */
> +    for ( i = 0; i < d->max_vcpus; i++ )
> +    {
> +        gicc = (struct acpi_madt_generic_interrupt *)(base_ptr + table_len);
> +        ACPI_MEMCPY(gicc, host_gicc, size);
> +        gicc->cpu_interface_number = i;
> +        gicc->uid = i;
> +        gicc->flags = ACPI_MADT_ENABLED;
> +        gicc->arm_mpidr = vcpuid_to_vaffinity(i);

What about the other fields?

* parking_version: DOM0 will always use PSCI => should be set to 0
* performance_interrupt: There is currently PMU support for DOM0
* gic{v,h}_base_address/vgic_interrupt: they are used by Xen => should 
not be exposed to the guest

> +        table_len += size;
> +    }
> +
> +    return table_len;
> +}
> +
>   static int __init
>   gic_acpi_parse_madt_cpu(struct acpi_subtable_header *header,
>                           const unsigned long end)

[...]

> diff --git a/xen/arch/arm/gic-v3.c b/xen/arch/arm/gic-v3.c
> index f83fd88..d9fce4b 100644
> --- a/xen/arch/arm/gic-v3.c
> +++ b/xen/arch/arm/gic-v3.c
> @@ -1236,6 +1236,48 @@ static void __init gicv3_dt_init(void)
>   }
>
>   #ifdef CONFIG_ACPI
> +static u32 gicv3_make_hwdom_madt(const struct domain *d, u32 offset)
> +{
> +    struct acpi_subtable_header *header;
> +    struct acpi_madt_generic_interrupt *host_gicc, *gicc;
> +    struct acpi_madt_generic_redistributor *gicr;
> +    u8 *base_ptr = d->arch.efi_acpi_table + offset;
> +    u32 i, table_len = 0, size;
> +
> +    /* Add Generic Interrupt */
> +    header = acpi_table_get_entry_madt(ACPI_MADT_TYPE_GENERIC_INTERRUPT, 0);
> +    if ( !header )
> +        panic("Can't get GICC entry");
> +    host_gicc = container_of(header, struct acpi_madt_generic_interrupt,
> +                             header);
> +
> +    size = sizeof(struct acpi_madt_generic_interrupt);
> +    for ( i = 0; i < d->max_vcpus; i++ )
> +    {
> +        gicc = (struct acpi_madt_generic_interrupt *)(base_ptr + table_len);
> +        ACPI_MEMCPY(gicc, host_gicc, size);
> +        gicc->cpu_interface_number = i;
> +        gicc->uid = i;
> +        gicc->flags = ACPI_MADT_ENABLED;
> +        gicc->arm_mpidr = vcpuid_to_vaffinity(i);
> +        table_len += size;

Ditto for the fields.

Furthermore, you use the Generic Redistributor table to describe the 
redistributor regions. So the field gicr_base_address should be set to 0.

> +    }
> +
> +    /* Add Generic Redistributor */
> +    size = sizeof(struct acpi_madt_generic_redistributor);
> +    for ( i = 0; i < d->arch.vgic.nr_regions; i++ )
> +    {
> +        gicr = (struct acpi_madt_generic_redistributor *)(base_ptr + table_len);
> +        gicr->header.type = ACPI_MADT_TYPE_GENERIC_REDISTRIBUTOR;
> +        gicr->header.length = size;
> +        gicr->base_address = d->arch.vgic.rdist_regions[i].base;
> +        gicr->length = d->arch.vgic.rdist_regions[i].size;
> +        table_len += size;
> +    }
> +
> +    return table_len;
> +}
> +
>   static int __init
>   gic_acpi_parse_madt_cpu(struct acpi_subtable_header *header,
>                           const unsigned long end)

[...]

Regards,

-- 
Julien Grall

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  reply	other threads:[~2016-03-21 15:18 UTC|newest]

Thread overview: 79+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-03-17  9:40 [PATCH v6 00/22] Prepare UEFI and ACPI tables for Dom0 on ARM64 Shannon Zhao
2016-03-17  9:40 ` [PATCH v6 01/22] arm/acpi: Estimate memory required for acpi/efi tables Shannon Zhao
2016-03-18 18:44   ` Julien Grall
2016-03-21 13:01     ` Jan Beulich
2016-03-22 13:01     ` Shannon Zhao
2016-03-22  0:28   ` Julien Grall
2016-03-24 12:36   ` Stefano Stabellini
2016-03-17  9:40 ` [PATCH v6 02/22] arm/acpi: Add a helper function to get the acpi table offset Shannon Zhao
2016-03-21 12:16   ` Julien Grall
2016-03-24 12:32   ` Stefano Stabellini
2016-03-17  9:40 ` [PATCH v6 03/22] arm/acpi: Prepare FADT table for Dom0 Shannon Zhao
2016-03-21 12:25   ` Julien Grall
2016-03-17  9:40 ` [PATCH v6 04/22] arm/gic: Add a new callback for creating MADT " Shannon Zhao
2016-03-21 15:18   ` Julien Grall [this message]
2016-03-17  9:40 ` [PATCH v6 05/22] arm/acpi: Prepare " Shannon Zhao
2016-03-21 15:26   ` Julien Grall
2016-03-21 15:51     ` Jan Beulich
2016-03-17  9:40 ` [PATCH v6 06/22] arm/acpi: Prepare STAO " Shannon Zhao
2016-03-21 15:31   ` Julien Grall
2016-03-17  9:40 ` [PATCH v6 07/22] arm/acpi: Prepare XSDT " Shannon Zhao
2016-03-21 15:43   ` Julien Grall
2016-03-17  9:40 ` [PATCH v6 08/22] arm/acpi: Prepare RSDP " Shannon Zhao
2016-03-21 15:47   ` Julien Grall
2016-03-17  9:40 ` [PATCH v6 09/22] arm/p2m: Add helper functions to map memory regions Shannon Zhao
2016-03-21 15:52   ` Julien Grall
2016-03-22 13:05     ` Shannon Zhao
2016-03-22 15:59       ` Julien Grall
2016-03-17  9:40 ` [PATCH v6 10/22] arm/acpi: Map all other tables for Dom0 Shannon Zhao
2016-03-21 15:57   ` Julien Grall
2016-03-17  9:40 ` [PATCH v6 11/22] arm/acpi: Prepare EFI system table " Shannon Zhao
2016-03-21 16:10   ` Julien Grall
2016-03-22 13:06     ` Shannon Zhao
2016-03-22 13:24       ` Jan Beulich
2016-03-17  9:40 ` [PATCH v6 12/22] arm/acpi: Prepare EFI memory descriptor " Shannon Zhao
2016-03-21 16:51   ` Julien Grall
2016-03-22 13:16     ` Shannon Zhao
2016-03-22 16:04       ` Julien Grall
2016-03-24 15:06         ` Shannon Zhao
2016-03-24 15:23           ` Julien Grall
2016-03-24 12:39   ` Stefano Stabellini
2016-03-17  9:40 ` [PATCH v6 13/22] arm/acpi: Map the new created EFI and ACPI tables to Dom0 Shannon Zhao
2016-03-22  0:42   ` Julien Grall
2016-03-22 13:18     ` Shannon Zhao
2016-03-22 16:16       ` Julien Grall
2016-03-24 14:59         ` Shannon Zhao
2016-03-24 15:35           ` Julien Grall
2016-03-17  9:41 ` [PATCH v6 14/22] arm/acpi: Create min DT stub for Dom0 Shannon Zhao
2016-03-22  1:07   ` Julien Grall
2016-03-22 13:23     ` Shannon Zhao
2016-03-17  9:41 ` [PATCH v6 15/22] arm/acpi: Permit access all Xen unused SPIs " Shannon Zhao
2016-03-22 18:18   ` Julien Grall
2016-03-24 15:01     ` Shannon Zhao
2016-03-24 15:37       ` Julien Grall
2016-03-25  7:13         ` Shannon Zhao
2016-03-17  9:41 ` [PATCH v6 16/22] arm/acpi: Configure SPI interrupt type and route to Dom0 dynamically Shannon Zhao
2016-03-22 19:17   ` Julien Grall
2016-03-24 12:41   ` Stefano Stabellini
2016-03-17  9:41 ` [PATCH v6 17/22] arm/gic: Add a new callback to deny Dom0 access to GIC regions Shannon Zhao
2016-03-22 19:33   ` Julien Grall
2016-03-24 12:45     ` Stefano Stabellini
2016-03-24 15:03       ` Shannon Zhao
2016-03-24 15:39         ` Julien Grall
2016-03-17  9:41 ` [PATCH v6 18/22] arm/acpi: Permit MMIO access of Xen unused devices for Dom0 Shannon Zhao
2016-03-23 11:50   ` Julien Grall
2016-03-17  9:41 ` [PATCH v6 19/22] hvm/params: Add a new delivery type for event-channel in HVM_PARAM_CALLBACK_IRQ Shannon Zhao
2016-03-17 10:42   ` Jan Beulich
2016-03-17 11:04     ` Shannon Zhao
2016-03-17 11:29       ` Jan Beulich
2016-03-17 11:56         ` Shannon Zhao
2016-03-17 12:42           ` Jan Beulich
2016-03-17  9:41 ` [PATCH v6 20/22] xen/acpi: Fix event-channel interrupt when booting with ACPI Shannon Zhao
2016-03-23 12:15   ` Julien Grall
2016-03-17  9:41 ` [PATCH v6 21/22] xen/arm: Add a hypercall for device mmio mapping Shannon Zhao
2016-03-17  9:41 ` [PATCH v6 22/22] xen/arm64: Add ACPI support Shannon Zhao
2016-03-17 10:52   ` Jan Beulich
2016-03-17 11:03     ` Shannon Zhao
2016-03-17 11:31       ` Jan Beulich
2016-03-17 13:10         ` Shannon Zhao
2016-03-17 13:24           ` Jan Beulich

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