From: Shannon Zhao <zhaoshenglong@huawei.com>
To: linux-arm-kernel@lists.infradead.org, sstabellini@kernel.org
Cc: devicetree@vger.kernel.org, linux-efi@vger.kernel.org,
catalin.marinas@arm.com, will.deacon@arm.com,
linux-kernel@vger.kernel.org, xen-devel@lists.xen.org,
julien.grall@arm.com, david.vrabel@citrix.com,
peter.huangpeng@huawei.com, shannon.zhao@linaro.org
Subject: [PATCH v11 10/17] arm/xen: Get event-channel irq through HVM_PARAM when booting with ACPI
Date: Thu, 7 Apr 2016 20:03:27 +0800 [thread overview]
Message-ID: <1460030614-16112-11-git-send-email-zhaoshenglong__18734.0873097584$1460031161$gmane$org@huawei.com> (raw)
In-Reply-To: <1460030614-16112-1-git-send-email-zhaoshenglong@huawei.com>
From: Shannon Zhao <shannon.zhao@linaro.org>
The kernel will get the event-channel IRQ through
HVM_PARAM_CALLBACK_IRQ.
Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org>
Reviewed-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Reviewed-by: Julien Grall <julien.grall@arm.com>
---
arch/arm/xen/enlighten.c | 36 +++++++++++++++++++++++++++++++++++-
1 file changed, 35 insertions(+), 1 deletion(-)
diff --git a/arch/arm/xen/enlighten.c b/arch/arm/xen/enlighten.c
index d94f726..06bd61a 100644
--- a/arch/arm/xen/enlighten.c
+++ b/arch/arm/xen/enlighten.c
@@ -30,6 +30,7 @@
#include <linux/time64.h>
#include <linux/timekeeping.h>
#include <linux/timekeeper_internal.h>
+#include <linux/acpi.h>
#include <linux/mm.h>
@@ -278,6 +279,35 @@ void __init xen_early_init(void)
add_preferred_console("hvc", 0, NULL);
}
+static void __init xen_acpi_guest_init(void)
+{
+#ifdef CONFIG_ACPI
+ struct xen_hvm_param a;
+ int interrupt, trigger, polarity;
+
+ a.domid = DOMID_SELF;
+ a.index = HVM_PARAM_CALLBACK_IRQ;
+
+ if (HYPERVISOR_hvm_op(HVMOP_get_param, &a)
+ || (a.value >> 56) != HVM_PARAM_CALLBACK_TYPE_PPI) {
+ xen_events_irq = 0;
+ return;
+ }
+
+ 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
+}
+
+static void __init xen_dt_guest_init(void)
+{
+ xen_events_irq = irq_of_parse_and_map(xen_node, 0);
+}
+
static int __init xen_guest_init(void)
{
struct xen_add_to_physmap xatp;
@@ -286,7 +316,11 @@ 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)
+ xen_acpi_guest_init();
+ else
+ xen_dt_guest_init();
+
if (!xen_events_irq) {
pr_err("Xen event channel interrupt not found\n");
return -ENODEV;
--
2.0.4
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xen.org
http://lists.xen.org/xen-devel
next prev parent reply other threads:[~2016-04-07 12:03 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1460030614-16112-1-git-send-email-zhaoshenglong@huawei.com>
2016-04-07 12:03 ` [PATCH v11 01/17] Xen: ACPI: Hide UART used by Xen Shannon Zhao
2016-04-07 12:03 ` [PATCH v11 02/17] xen/grant-table: Move xlated_setup_gnttab_pages to common place Shannon Zhao
2016-04-07 12:03 ` [PATCH v11 03/17] Xen: xlate: Use page_to_xen_pfn instead of page_to_pfn Shannon Zhao
2016-04-07 12:03 ` [PATCH v11 04/17] arm/xen: Use xen_xlate_map_ballooned_pages to setup grant table Shannon Zhao
2016-04-07 12:03 ` [PATCH v11 05/17] xen: memory : Add new XENMAPSPACE type XENMAPSPACE_dev_mmio Shannon Zhao
2016-04-07 12:03 ` [PATCH v11 06/17] Xen: ARM: Add support for mapping platform device mmio Shannon Zhao
2016-04-07 12:03 ` [PATCH v11 07/17] Xen: ARM: Add support for mapping AMBA " Shannon Zhao
2016-04-07 12:03 ` [PATCH v11 08/17] Xen: public/hvm: sync changes of HVM_PARAM_CALLBACK_VIA ABI from Xen Shannon Zhao
2016-04-07 12:03 ` [PATCH v11 09/17] xen/hvm/params: Add a new delivery type for event-channel in HVM_PARAM_CALLBACK_IRQ Shannon Zhao
2016-04-07 12:03 ` Shannon Zhao [this message]
2016-04-07 12:03 ` [PATCH v11 11/17] ARM: XEN: Move xen_early_init() before efi_init() Shannon Zhao
2016-04-07 12:03 ` [PATCH v11 12/17] ARM64: ACPI: Check if it runs on Xen to enable or disable ACPI Shannon Zhao
2016-04-07 12:03 ` [PATCH v11 13/17] ARM: Xen: Document UEFI support on Xen ARM virtual platforms Shannon Zhao
2016-04-07 12:03 ` [PATCH v11 14/17] XEN: EFI: Move x86 specific codes to architecture directory Shannon Zhao
2016-04-07 12:03 ` [PATCH v11 15/17] ARM64: XEN: Add a function to initialize Xen specific UEFI runtime services Shannon Zhao
2016-04-07 12:03 ` [PATCH v11 16/17] FDT: Add a helper to get the subnode by given name Shannon Zhao
2016-04-07 12:03 ` [PATCH v11 17/17] Xen: EFI: Parse DT parameters for Xen specific UEFI Shannon Zhao
[not found] ` <1460030614-16112-2-git-send-email-zhaoshenglong@huawei.com>
2016-04-15 6:43 ` [PATCH v11 01/17] Xen: ACPI: Hide UART used by Xen Shannon Zhao
2016-04-17 23:58 ` Rafael J. Wysocki
[not found] ` <57108D99.5030800@huawei.com>
2016-04-17 23:59 ` Rafael J. Wysocki
[not found] ` <CAJZ5v0gN9S0AKX8SZbbVFOn6ydwCa_7GyxzzJHod8s0xyCXgvA@mail.gmail.com>
2016-04-20 9:39 ` Stefano Stabellini
[not found] ` <1460030614-16112-13-git-send-email-zhaoshenglong@huawei.com>
2016-04-20 9:34 ` [PATCH v11 12/17] ARM64: ACPI: Check if it runs on Xen to enable or disable ACPI Stefano Stabellini
[not found] ` <alpine.DEB.2.10.1604201033140.25611@sstabellini-ThinkPad-X260>
2016-04-22 10:32 ` Mark Rutland
[not found] ` <20160422103250.GC10606@leverpostej>
2016-04-25 10:15 ` Stefano Stabellini
2016-04-22 10:51 ` Catalin Marinas
[not found] ` <1460030614-16112-12-git-send-email-zhaoshenglong@huawei.com>
2016-04-22 10:51 ` [PATCH v11 11/17] ARM: XEN: Move xen_early_init() before efi_init() Catalin Marinas
[not found] ` <1460030614-16112-16-git-send-email-zhaoshenglong@huawei.com>
2016-04-22 10:54 ` [PATCH v11 15/17] ARM64: XEN: Add a function to initialize Xen specific UEFI runtime services Catalin Marinas
[not found] ` <20160422105427.GG2998@e104818-lin.cambridge.arm.com>
2016-04-22 11:57 ` Stefano Stabellini
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to='1460030614-16112-11-git-send-email-zhaoshenglong__18734.0873097584$1460031161$gmane$org@huawei.com' \
--to=zhaoshenglong@huawei.com \
--cc=catalin.marinas@arm.com \
--cc=david.vrabel@citrix.com \
--cc=devicetree@vger.kernel.org \
--cc=julien.grall@arm.com \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-efi@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=peter.huangpeng@huawei.com \
--cc=shannon.zhao@linaro.org \
--cc=sstabellini@kernel.org \
--cc=will.deacon@arm.com \
--cc=xen-devel@lists.xen.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).