From: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
To: Shannon Zhao <zhaoshenglong@huawei.com>
Cc: hangaohuai@huawei.com, stefano.stabellini@citrix.com,
shannon.zhao@linaro.org, xen-devel@lists.xen.org
Subject: Re: [PATCH v5 16/22] arm/acpi: Configure SPI interrupt type and route to Dom0 dynamically
Date: Fri, 4 Mar 2016 11:26:06 +0000 [thread overview]
Message-ID: <alpine.DEB.2.02.1603041118430.17938@kaball.uk.xensource.com> (raw)
In-Reply-To: <1457072152-16128-17-git-send-email-zhaoshenglong@huawei.com>
On Fri, 4 Mar 2016, Shannon Zhao wrote:
> From: Shannon Zhao <shannon.zhao@linaro.org>
>
> Interrupt information is described in DSDT and is not available at the
> time of booting. Check if the interrupt is permitted to access and set
> the interrupt type, route it to guest dynamically only for SPI
> and Dom0.
>
> Signed-off-by: Parth Dixit <parth.dixit@linaro.org>
> Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org>
> ---
> v5: add a small function to get the irq type from ICFG
> ---
> xen/arch/arm/vgic.c | 38 ++++++++++++++++++++++++++++++++++++++
> 1 file changed, 38 insertions(+)
>
> diff --git a/xen/arch/arm/vgic.c b/xen/arch/arm/vgic.c
> index ee35683..52378a3 100644
> --- a/xen/arch/arm/vgic.c
> +++ b/xen/arch/arm/vgic.c
> @@ -25,6 +25,8 @@
> #include <xen/irq.h>
> #include <xen/sched.h>
> #include <xen/perfc.h>
> +#include <xen/iocap.h>
> +#include <xen/acpi.h>
>
> #include <asm/current.h>
>
> @@ -334,6 +336,21 @@ void vgic_disable_irqs(struct vcpu *v, uint32_t r, int n)
> }
> }
>
> +#ifdef CONFIG_ACPI
> +#define VGIC_ICFG_MASK(intr) ( 1 << ( ( 2 * ( intr % 16 ) ) + 1 ) )
remove spaces: ^ ^ ^ ^
> +static unsigned int get_the_irq_type(struct vcpu *v, int n, int index)
static inline
> +{
> + struct vgic_irq_rank *vr = vgic_get_rank(v, n);
> + uint32_t tr = vr->icfg[index >> 4];
> +
> + if ( tr & VGIC_ICFG_MASK(index) )
> + return IRQ_TYPE_EDGE_BOTH;
> + else
> + return IRQ_TYPE_LEVEL_MASK;
> +}
> +#endif
> +
> void vgic_enable_irqs(struct vcpu *v, uint32_t r, int n)
> {
> const unsigned long mask = r;
> @@ -342,9 +359,30 @@ void vgic_enable_irqs(struct vcpu *v, uint32_t r, int n)
> unsigned long flags;
> int i = 0;
> struct vcpu *v_target;
> +#ifdef CONFIG_ACPI
> + struct domain *d = v->domain;
> + int ret;
> +#endif
>
> while ( (i = find_next_bit(&mask, 32, i)) < 32 ) {
> irq = i + (32 * n);
> +#ifdef CONFIG_ACPI
> + /* Set the irq type and route it to guest only for SPI and Dom0 */
> + if( irq_access_permitted(d, irq) && is_hardware_domain(d) &&
> + ( irq >= 32 ) && ( !acpi_disabled ) )
Is there a reason why we need to have this code inside an ifdef? It
looks like we can remove all ifdefs from this patch.
> + {
> + ret = irq_set_spi_type(irq, get_the_irq_type(v, n, i));
> + if ( ret )
> + printk(XENLOG_WARNING "The irq type is not correct\n");
> +
> + vgic_reserve_virq(d, irq);
> +
> + ret = route_irq_to_guest(d, irq, irq, NULL);
> + if ( ret )
> + printk(XENLOG_ERR "Unable to route IRQ %u to domain %u\n",
> + irq, d->domain_id);
> + }
> +#endif
> v_target = __vgic_get_target_vcpu(v, irq);
> p = irq_to_pending(v_target, irq);
> set_bit(GIC_IRQ_GUEST_ENABLED, &p->status);
> --
> 2.0.4
>
>
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next prev parent reply other threads:[~2016-03-04 11:26 UTC|newest]
Thread overview: 63+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-04 6:15 [PATCH v5 00/22] Prepare UEFI and ACPI tables for Dom0 on ARM64 Shannon Zhao
2016-03-04 6:15 ` [PATCH v5 01/22] arm/acpi: Estimate memory required for acpi/efi tables Shannon Zhao
2016-03-04 10:09 ` Jan Beulich
2016-03-04 10:55 ` Stefano Stabellini
2016-03-04 15:03 ` Shannon Zhao
2016-03-04 15:23 ` Stefano Stabellini
2016-03-04 15:52 ` Shannon Zhao
2016-03-04 15:59 ` Stefano Stabellini
2016-03-04 15:39 ` Jan Beulich
2016-03-04 6:15 ` [PATCH v5 02/22] arm/acpi: Add a helper function to get the acpi table offset Shannon Zhao
2016-03-04 10:59 ` Stefano Stabellini
2016-03-04 15:12 ` Shannon Zhao
2016-03-04 15:31 ` Stefano Stabellini
2016-03-04 15:53 ` Shannon Zhao
2016-03-04 6:15 ` [PATCH v5 03/22] arm/acpi: Prepare FADT table for Dom0 Shannon Zhao
2016-03-04 6:15 ` [PATCH v5 04/22] arm/gic: Add a new callback for creating MADT " Shannon Zhao
2016-03-04 6:15 ` [PATCH v5 05/22] arm/acpi: Prepare " Shannon Zhao
2016-03-04 6:15 ` [PATCH v5 06/22] arm/acpi: Prepare STAO " Shannon Zhao
2016-03-04 6:15 ` [PATCH v5 07/22] arm/acpi: Prepare XSDT " Shannon Zhao
2016-03-04 6:15 ` [PATCH v5 08/22] arm/acpi: Prepare RSDP " Shannon Zhao
2016-03-04 6:15 ` [PATCH v5 09/22] arm/p2m: Add helper functions to map memory regions Shannon Zhao
2016-03-04 10:51 ` Stefano Stabellini
2016-03-04 6:15 ` [PATCH v5 10/22] arm/acpi: Map all other tables for Dom0 Shannon Zhao
2016-03-04 6:15 ` [PATCH v5 11/22] arm/acpi: Prepare EFI system table " Shannon Zhao
2016-03-04 11:02 ` Stefano Stabellini
2016-03-04 6:15 ` [PATCH v5 12/22] arm/acpi: Prepare EFI memory descriptor " Shannon Zhao
2016-03-04 11:13 ` Stefano Stabellini
2016-03-16 8:59 ` Shannon Zhao
2016-03-04 6:15 ` [PATCH v5 13/22] arm/acpi: Map the new created EFI and ACPI tables to Dom0 Shannon Zhao
2016-03-04 6:15 ` [PATCH v5 14/22] arm/acpi: Create min DT stub for Dom0 Shannon Zhao
2016-03-04 11:17 ` Stefano Stabellini
2016-03-04 6:15 ` [PATCH v5 15/22] arm/acpi: Permit access all Xen unused SPIs " Shannon Zhao
2016-03-04 6:15 ` [PATCH v5 16/22] arm/acpi: Configure SPI interrupt type and route to Dom0 dynamically Shannon Zhao
2016-03-04 11:26 ` Stefano Stabellini [this message]
2016-03-04 15:16 ` Shannon Zhao
2016-03-04 6:15 ` [PATCH v5 17/22] arm/gic: Add a new callback to deny Dom0 access to GIC regions Shannon Zhao
2016-03-04 11:59 ` Stefano Stabellini
2016-03-04 6:15 ` [PATCH v5 18/22] arm/acpi: Permit MMIO access of Xen unused devices for Dom0 Shannon Zhao
2016-03-04 12:01 ` Stefano Stabellini
2016-03-04 6:15 ` [PATCH v5 19/22] hvm/params: Add a new delivery type for event-channel in HVM_PARAM_CALLBACK_IRQ Shannon Zhao
2016-03-04 10:16 ` Jan Beulich
2016-03-04 12:09 ` Stefano Stabellini
2016-03-04 12:20 ` Jan Beulich
2016-03-04 12:26 ` Stefano Stabellini
2016-03-16 15:03 ` Julien Grall
2016-03-16 15:10 ` Jan Beulich
2016-03-04 21:19 ` Konrad Rzeszutek Wilk
2016-03-16 16:34 ` Julien Grall
2016-03-16 17:49 ` Konrad Rzeszutek Wilk
2016-03-24 12:24 ` Stefano Stabellini
2016-03-04 6:15 ` [PATCH v5 20/22] xen/acpi: Fix event-channel interrupt when booting with ACPI Shannon Zhao
2016-03-04 6:15 ` [PATCH v5 21/22] xen/arm: Add a hypercall for device mmio mapping Shannon Zhao
2016-03-04 10:29 ` Jan Beulich
2016-03-04 11:00 ` Roger Pau Monné
2016-03-04 11:11 ` Jan Beulich
2016-03-04 11:37 ` Stefano Stabellini
2016-03-16 9:48 ` Shannon Zhao
2016-03-16 10:04 ` Jan Beulich
2016-03-16 11:22 ` Shannon Zhao
2016-03-04 6:15 ` [PATCH v5 22/22] xen/arm64: Add ACPI support Shannon Zhao
2016-03-04 10:33 ` Jan Beulich
2016-03-04 11:45 ` Stefano Stabellini
2016-03-04 11:45 ` Stefano Stabellini
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