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Groups > linux.kernel > #1309924
| From | Shannon Zhao <zhaoshenglong@huawei.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH v2 09/16] arm/xen: Get event-channel irq through HVM_PARAM when booting with ACPI |
| Date | 2016-01-15 08:10 +0100 |
| Message-ID | <qR6Ge-2DL-31@gated-at.bofh.it> (permalink) |
| References | <qR6wx-2kF-3@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
From: Shannon Zhao <shannon.zhao@linaro.org>
When booting with ACPI, it could get the event-channel irq through
HVM_PARAM_CALLBACK_IRQ.
Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org>
---
arch/arm/xen/enlighten.c | 30 +++++++++++++++++++++++++++++-
1 file changed, 29 insertions(+), 1 deletion(-)
diff --git a/arch/arm/xen/enlighten.c b/arch/arm/xen/enlighten.c
index 6d90a62..4e78c49 100644
--- a/arch/arm/xen/enlighten.c
+++ b/arch/arm/xen/enlighten.c
@@ -29,6 +29,7 @@
#include <linux/time64.h>
#include <linux/timekeeping.h>
#include <linux/timekeeper_internal.h>
+#include <linux/acpi.h>
#include <linux/mm.h>
@@ -270,7 +271,34 @@ static int __init xen_guest_init(void)
if (!xen_domain())
return 0;
- xen_events_irq = irq_of_parse_and_map(xen_node, 0);
+ if (!acpi_disabled) {
+#ifdef CONFIG_ACPI
+ struct xen_hvm_param a;
+ int interrupt, trigger, polarity;
+
+ a.domid = DOMID_SELF;
+ a.index = HVM_PARAM_CALLBACK_IRQ;
+ xen_events_irq = 0;
+ if (!HYPERVISOR_hvm_op(HVMOP_get_param, &a)) {
+ if ((a.value >> 56) == 3) {
+ interrupt = a.value & 0xff;
+ trigger = ((a.value >> 8) & 0x1)
+ ? ACPI_EDGE_SENSITIVE
+ : ACPI_LEVEL_SENSITIVE;
+ polarity = ((a.value >> 8) & 0x2)
+ ? ACPI_ACTIVE_LOW
+ : ACPI_ACTIVE_HIGH;
+ xen_events_irq = acpi_register_gsi(NULL,
+ interrupt,
+ trigger,
+ polarity);
+ }
+ }
+#endif
+ } else {
+ xen_events_irq = irq_of_parse_and_map(xen_node, 0);
+ }
+
if (!xen_events_irq) {
pr_err("Xen event channel interrupt not found\n");
return -ENODEV;
--
2.0.4
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[PATCH v2 00/16] Add ACPI support for Xen Dom0 on ARM64 Shannon Zhao <zhaoshenglong@huawei.com> - 2016-01-15 08:00 +0100
[PATCH v2 01/16] Xen: ACPI: Hide UART used by Xen Shannon Zhao <zhaoshenglong@huawei.com> - 2016-01-15 08:00 +0100
Re: [PATCH v2 01/16] Xen: ACPI: Hide UART used by Xen Stefano Stabellini <stefano.stabellini@eu.citrix.com> - 2016-01-15 16:50 +0100
Re: [PATCH v2 01/16] Xen: ACPI: Hide UART used by Xen Mark Rutland <mark.rutland@arm.com> - 2016-01-18 11:40 +0100
Re: [PATCH v2 01/16] Xen: ACPI: Hide UART used by Xen Stefano Stabellini <stefano.stabellini@eu.citrix.com> - 2016-01-18 12:40 +0100
[PATCH v2 16/16] ARM64: XEN: Initialize Xen specific UEFI runtime services Shannon Zhao <zhaoshenglong@huawei.com> - 2016-01-15 08:00 +0100
Re: [PATCH v2 16/16] ARM64: XEN: Initialize Xen specific UEFI runtime services Mark Rutland <mark.rutland@arm.com> - 2016-01-18 12:10 +0100
Re: [PATCH v2 16/16] ARM64: XEN: Initialize Xen specific UEFI runtime services Stefano Stabellini <stefano.stabellini@eu.citrix.com> - 2016-01-18 18:50 +0100
Re: [PATCH v2 16/16] ARM64: XEN: Initialize Xen specific UEFI runtime services Mark Rutland <mark.rutland@arm.com> - 2016-01-18 19:30 +0100
Re: [PATCH v2 16/16] ARM64: XEN: Initialize Xen specific UEFI runtime services Stefano Stabellini <stefano.stabellini@eu.citrix.com> - 2016-01-19 13:10 +0100
Re: [PATCH v2 16/16] ARM64: XEN: Initialize Xen specific UEFI runtime services Mark Rutland <mark.rutland@arm.com> - 2016-01-19 14:10 +0100
Re: [PATCH v2 16/16] ARM64: XEN: Initialize Xen specific UEFI runtime services Shannon Zhao <shannon.zhao@linaro.org> - 2016-01-19 14:40 +0100
Re: [PATCH v2 16/16] ARM64: XEN: Initialize Xen specific UEFI runtime services Stefano Stabellini <stefano.stabellini@eu.citrix.com> - 2016-01-19 15:30 +0100
Re: [Xen-devel] [PATCH v2 16/16] ARM64: XEN: Initialize Xen specific UEFI runtime services Stefano Stabellini <stefano.stabellini@eu.citrix.com> - 2016-01-18 18:10 +0100
Re: [Xen-devel] [PATCH v2 16/16] ARM64: XEN: Initialize Xen specific UEFI runtime services Shannon Zhao <shannon.zhao@linaro.org> - 2016-01-19 14:20 +0100
Re: [Xen-devel] [PATCH v2 16/16] ARM64: XEN: Initialize Xen specific UEFI runtime services Stefano Stabellini <stefano.stabellini@eu.citrix.com> - 2016-01-19 15:30 +0100
Re: [Xen-devel] [PATCH v2 16/16] ARM64: XEN: Initialize Xen specific UEFI runtime services Shannon Zhao <zhaoshenglong@huawei.com> - 2016-01-22 05:00 +0100
Re: [Xen-devel] [PATCH v2 16/16] ARM64: XEN: Initialize Xen specific UEFI runtime services Stefano Stabellini <stefano.stabellini@eu.citrix.com> - 2016-01-22 12:10 +0100
[PATCH v2 10/16] ARM: XEN: Move xen_early_init() before efi_init() Shannon Zhao <zhaoshenglong@huawei.com> - 2016-01-15 08:00 +0100
Re: [Xen-devel] [PATCH v2 10/16] ARM: XEN: Move xen_early_init() before efi_init() Stefano Stabellini <stefano.stabellini@eu.citrix.com> - 2016-01-18 16:10 +0100
Re: [Xen-devel] [PATCH v2 10/16] ARM: XEN: Move xen_early_init() before efi_init() Shannon Zhao <zhaoshenglong@huawei.com> - 2016-01-19 09:40 +0100
Re: [Xen-devel] [PATCH v2 10/16] ARM: XEN: Move xen_early_init() before efi_init() Stefano Stabellini <stefano.stabellini@eu.citrix.com> - 2016-01-19 13:20 +0100
[PATCH v2 05/16] xen: memory : Add new XENMAPSPACE type XENMAPSPACE_dev_mmio Shannon Zhao <zhaoshenglong@huawei.com> - 2016-01-15 08:10 +0100
[PATCH v2 04/16] arm/xen: Use xen_xlate_map_ballooned_pages to setup grant table Shannon Zhao <zhaoshenglong@huawei.com> - 2016-01-15 08:10 +0100
Re: [PATCH v2 04/16] arm/xen: Use xen_xlate_map_ballooned_pages to setup grant table Stefano Stabellini <stefano.stabellini@eu.citrix.com> - 2016-01-15 18:30 +0100
[PATCH v2 09/16] arm/xen: Get event-channel irq through HVM_PARAM when booting with ACPI Shannon Zhao <zhaoshenglong@huawei.com> - 2016-01-15 08:10 +0100
Re: [Xen-devel] [PATCH v2 09/16] arm/xen: Get event-channel irq through HVM_PARAM when booting with ACPI Stefano Stabellini <stefano.stabellini@eu.citrix.com> - 2016-01-18 15:40 +0100
Re: [Xen-devel] [PATCH v2 09/16] arm/xen: Get event-channel irq through HVM_PARAM when booting with ACPI Shannon Zhao <zhaoshenglong@huawei.com> - 2016-01-19 09:30 +0100
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