From: Shannon Zhao <shannon.zhao@linaro.org>
To: linux-arm-kernel@lists.infradead.org, stefano.stabellini@citrix.com
Cc: devicetree@vger.kernel.org, linux-efi@vger.kernel.org,
catalin.marinas@arm.com, will.deacon@arm.com,
linux-kernel@vger.kernel.org, peter.huangpeng@huawei.com,
julien.grall@arm.com, david.vrabel@citrix.com,
zhaoshenglong@huawei.com, xen-devel@lists.xen.org,
shannon.zhao@linaro.org
Subject: [PATCH v10 07/17] Xen: ARM: Add support for mapping AMBA device mmio
Date: Fri, 1 Apr 2016 23:49:05 +0800 [thread overview]
Message-ID: <1459525755-36968-8-git-send-email-shannon.zhao__29390.6876621351$1459525904$gmane$org@linaro.org> (raw)
In-Reply-To: <1459525755-36968-1-git-send-email-shannon.zhao@linaro.org>
Add a bus_notifier for AMBA bus device in order to map the device
mmio regions when DOM0 booting with ACPI.
Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org>
Reviewed-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
---
drivers/xen/arm-device.c | 43 +++++++++++++++++++++++++++++++++++++++++++
1 file changed, 43 insertions(+)
diff --git a/drivers/xen/arm-device.c b/drivers/xen/arm-device.c
index 76e26e5..3854043 100644
--- a/drivers/xen/arm-device.c
+++ b/drivers/xen/arm-device.c
@@ -139,3 +139,46 @@ static int __init register_xen_platform_notifier(void)
}
arch_initcall(register_xen_platform_notifier);
+
+#ifdef CONFIG_ARM_AMBA
+#include <linux/amba/bus.h>
+
+static int xen_amba_notifier(struct notifier_block *nb,
+ unsigned long action, void *data)
+{
+ struct amba_device *adev = to_amba_device(data);
+ int r = 0;
+
+ switch (action) {
+ case BUS_NOTIFY_ADD_DEVICE:
+ r = xen_map_device_mmio(&adev->res, 1);
+ break;
+ case BUS_NOTIFY_DEL_DEVICE:
+ r = xen_unmap_device_mmio(&adev->res, 1);
+ break;
+ default:
+ return NOTIFY_DONE;
+ }
+ if (r)
+ dev_err(&adev->dev, "AMBA: Failed to %s device %s MMIO!\n",
+ action == BUS_NOTIFY_ADD_DEVICE ? "map" :
+ (action == BUS_NOTIFY_DEL_DEVICE ? "unmap" : "?"),
+ adev->dev.init_name);
+
+ return NOTIFY_OK;
+}
+
+static struct notifier_block amba_device_nb = {
+ .notifier_call = xen_amba_notifier,
+};
+
+static int __init register_xen_amba_notifier(void)
+{
+ if (!xen_initial_domain() || acpi_disabled)
+ return 0;
+
+ return bus_register_notifier(&amba_bustype, &amba_device_nb);
+}
+
+arch_initcall(register_xen_amba_notifier);
+#endif
--
2.1.4
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xen.org
http://lists.xen.org/xen-devel
next prev parent reply other threads:[~2016-04-01 15:49 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1459525755-36968-1-git-send-email-shannon.zhao@linaro.org>
2016-04-01 15:48 ` [PATCH v10 01/17] Xen: ACPI: Hide UART used by Xen Shannon Zhao
2016-04-01 15:49 ` [PATCH v10 02/17] xen/grant-table: Move xlated_setup_gnttab_pages to common place Shannon Zhao
2016-04-01 15:49 ` [PATCH v10 03/17] Xen: xlate: Use page_to_xen_pfn instead of page_to_pfn Shannon Zhao
2016-04-01 15:49 ` [PATCH v10 04/17] arm/xen: Use xen_xlate_map_ballooned_pages to setup grant table Shannon Zhao
2016-04-01 15:49 ` [PATCH v10 05/17] xen: memory : Add new XENMAPSPACE type XENMAPSPACE_dev_mmio Shannon Zhao
2016-04-01 15:49 ` [PATCH v10 06/17] Xen: ARM: Add support for mapping platform device mmio Shannon Zhao
2016-04-01 15:49 ` Shannon Zhao [this message]
2016-04-01 15:49 ` [PATCH v10 08/17] Xen: public/hvm: sync changes of HVM_PARAM_CALLBACK_VIA ABI from Xen Shannon Zhao
2016-04-01 15:49 ` [PATCH v10 09/17] xen/hvm/params: Add a new delivery type for event-channel in HVM_PARAM_CALLBACK_IRQ Shannon Zhao
2016-04-01 15:49 ` [PATCH v10 10/17] arm/xen: Get event-channel irq through HVM_PARAM when booting with ACPI Shannon Zhao
2016-04-01 15:49 ` [PATCH v10 11/17] ARM: XEN: Move xen_early_init() before efi_init() Shannon Zhao
2016-04-01 15:49 ` [PATCH v10 12/17] ARM64: ACPI: Check if it runs on Xen to enable or disable ACPI Shannon Zhao
2016-04-01 15:49 ` [PATCH v10 13/17] ARM: Xen: Document UEFI support on Xen ARM virtual platforms Shannon Zhao
2016-04-01 15:49 ` [PATCH v10 14/17] XEN: EFI: Move x86 specific codes to architecture directory Shannon Zhao
2016-04-01 15:49 ` [PATCH v10 15/17] ARM64: XEN: Add a function to initialize Xen specific UEFI runtime services Shannon Zhao
2016-04-01 15:49 ` [PATCH v10 16/17] FDT: Add a helper to get the subnode by given name Shannon Zhao
2016-04-01 15:49 ` [PATCH v10 17/17] Xen: EFI: Parse DT parameters for Xen specific UEFI Shannon Zhao
[not found] ` <1459525755-36968-2-git-send-email-shannon.zhao@linaro.org>
2016-04-01 19:21 ` [PATCH v10 01/17] Xen: ACPI: Hide UART used by Xen Rafael J. Wysocki
2016-04-06 11:32 ` [PATCH v10 00/17] Add ACPI support for Xen Dom0 on ARM64 Julien Grall
[not found] ` <1459525755-36968-3-git-send-email-shannon.zhao@linaro.org>
2016-04-06 11:40 ` [PATCH v10 02/17] xen/grant-table: Move xlated_setup_gnttab_pages to common place Julien Grall
[not found] ` <1459525755-36968-4-git-send-email-shannon.zhao@linaro.org>
2016-04-06 11:42 ` [PATCH v10 03/17] Xen: xlate: Use page_to_xen_pfn instead of page_to_pfn Julien Grall
[not found] ` <1459525755-36968-5-git-send-email-shannon.zhao@linaro.org>
2016-04-06 11:43 ` [PATCH v10 04/17] arm/xen: Use xen_xlate_map_ballooned_pages to setup grant table Julien Grall
[not found] ` <1459525755-36968-6-git-send-email-shannon.zhao@linaro.org>
2016-04-06 11:44 ` [PATCH v10 05/17] xen: memory : Add new XENMAPSPACE type XENMAPSPACE_dev_mmio Julien Grall
[not found] ` <1459525755-36968-7-git-send-email-shannon.zhao@linaro.org>
2016-04-06 12:16 ` [PATCH v10 06/17] Xen: ARM: Add support for mapping platform device mmio Julien Grall
[not found] ` <5704FE2C.5000902@arm.com>
2016-04-07 1:37 ` Shannon Zhao
[not found] ` <5705B9BD.1020403@huawei.com>
2016-04-07 10:32 ` Julien Grall
[not found] ` <57063752.4020805@arm.com>
2016-04-07 11:25 ` Shannon Zhao
[not found] ` <1459525755-36968-8-git-send-email-shannon.zhao@linaro.org>
2016-04-06 12:26 ` [PATCH v10 07/17] Xen: ARM: Add support for mapping AMBA " Julien Grall
[not found] ` <1459525755-36968-10-git-send-email-shannon.zhao@linaro.org>
2016-04-06 12:29 ` [PATCH v10 09/17] xen/hvm/params: Add a new delivery type for event-channel in HVM_PARAM_CALLBACK_IRQ Julien Grall
[not found] ` <1459525755-36968-11-git-send-email-shannon.zhao@linaro.org>
2016-04-06 12:31 ` [PATCH v10 10/17] arm/xen: Get event-channel irq through HVM_PARAM when booting with ACPI Julien Grall
[not found] ` <1459525755-36968-12-git-send-email-shannon.zhao@linaro.org>
2016-04-06 12:35 ` [PATCH v10 11/17] ARM: XEN: Move xen_early_init() before efi_init() Julien Grall
[not found] ` <5704F3E1.7020508@arm.com>
2016-04-07 1:39 ` [PATCH v10 00/17] Add ACPI support for Xen Dom0 on ARM64 Shannon Zhao
[not found] ` <5705BA61.7000205@huawei.com>
2016-04-07 10:34 ` Julien Grall
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='1459525755-36968-8-git-send-email-shannon.zhao__29390.6876621351$1459525904$gmane$org@linaro.org' \
--to=shannon.zhao@linaro.org \
--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=stefano.stabellini@citrix.com \
--cc=will.deacon@arm.com \
--cc=xen-devel@lists.xen.org \
--cc=zhaoshenglong@huawei.com \
/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).