From: Shannon Zhao <zhaoshenglong@huawei.com>
To: <linux-arm-kernel@lists.infradead.org>,
<ard.biesheuvel@linaro.org>, <stefano.stabellini@citrix.com>,
<david.vrabel@citrix.com>
Cc: <catalin.marinas@arm.com>, <will.deacon@arm.com>,
<mark.rutland@arm.com>, <julien.grall@citrix.com>,
<xen-devel@lists.xen.org>, <devicetree@vger.kernel.org>,
<linux-efi@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<shannon.zhao@linaro.org>, <peter.huangpeng@huawei.com>
Subject: [PATCH v2 07/16] Xen: ARM: Add support for mapping AMBA device mmio
Date: Fri, 15 Jan 2016 14:55:20 +0800 [thread overview]
Message-ID: <1452840929-19612-8-git-send-email-zhaoshenglong@huawei.com> (raw)
In-Reply-To: <1452840929-19612-1-git-send-email-zhaoshenglong@huawei.com>
From: Shannon Zhao <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>
---
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 7d902ea..9978f8d 100644
--- a/drivers/xen/arm-device.c
+++ b/drivers/xen/arm-device.c
@@ -138,3 +138,46 @@ 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
--
2.0.4
next prev parent reply other threads:[~2016-01-15 6:58 UTC|newest]
Thread overview: 72+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-15 6:55 [PATCH v2 00/16] Add ACPI support for Xen Dom0 on ARM64 Shannon Zhao
2016-01-15 6:55 ` [PATCH v2 01/16] Xen: ACPI: Hide UART used by Xen Shannon Zhao
2016-01-15 15:39 ` Stefano Stabellini
2016-01-18 10:32 ` Mark Rutland
2016-01-18 11:38 ` Stefano Stabellini
2016-01-15 6:55 ` [PATCH v2 02/16] xen/grant-table: Move xlated_setup_gnttab_pages to common place Shannon Zhao
2016-01-15 15:53 ` [Xen-devel] " Stefano Stabellini
2016-01-15 6:55 ` [PATCH v2 03/16] Xen: xlate: Use page_to_xen_pfn instead of page_to_pfn Shannon Zhao
2016-01-15 17:08 ` [Xen-devel] " Stefano Stabellini
2016-01-18 5:08 ` Shannon Zhao
2016-01-19 14:59 ` Stefano Stabellini
2016-01-19 15:10 ` Shannon Zhao
2016-01-15 6:55 ` [PATCH v2 04/16] arm/xen: Use xen_xlate_map_ballooned_pages to setup grant table Shannon Zhao
2016-01-15 17:21 ` Stefano Stabellini
2016-01-15 6:55 ` [PATCH v2 05/16] xen: memory : Add new XENMAPSPACE type XENMAPSPACE_dev_mmio Shannon Zhao
2016-01-15 6:55 ` [PATCH v2 06/16] Xen: ARM: Add support for mapping platform device mmio Shannon Zhao
2016-01-15 17:39 ` [Xen-devel] " Stefano Stabellini
2016-01-15 6:55 ` Shannon Zhao [this message]
2016-01-18 11:58 ` [Xen-devel] [PATCH v2 07/16] Xen: ARM: Add support for mapping AMBA " Stefano Stabellini
2016-01-15 6:55 ` [PATCH v2 08/16] xen/hvm/params: Add a new delivery type for event-channel in HVM_PARAM_CALLBACK_IRQ Shannon Zhao
2016-01-18 12:38 ` [Xen-devel] " Stefano Stabellini
2016-01-18 12:42 ` Andrew Cooper
2016-01-18 12:46 ` Stefano Stabellini
2016-01-18 12:52 ` Andrew Cooper
2016-01-20 6:33 ` Shannon Zhao
2016-01-20 8:39 ` Andrew Cooper
2016-01-20 8:45 ` Shannon Zhao
2016-01-15 6:55 ` [PATCH v2 09/16] arm/xen: Get event-channel irq through HVM_PARAM when booting with ACPI Shannon Zhao
2016-01-18 14:38 ` [Xen-devel] " Stefano Stabellini
2016-01-19 8:21 ` Shannon Zhao
2016-01-15 6:55 ` [PATCH v2 10/16] ARM: XEN: Move xen_early_init() before efi_init() Shannon Zhao
2016-01-18 14:59 ` [Xen-devel] " Stefano Stabellini
2016-01-19 8:36 ` Shannon Zhao
2016-01-19 12:14 ` Stefano Stabellini
2016-01-15 6:55 ` [PATCH v2 11/16] ARM64: ACPI: Check if it runs on Xen to enable or disable ACPI Shannon Zhao
2016-01-18 10:41 ` Mark Rutland
2016-01-18 15:07 ` Stefano Stabellini
2016-01-19 8:41 ` Shannon Zhao
2016-01-15 6:55 ` [PATCH v2 12/16] ARM: Xen: Document UEFI support on Xen ARM virtual platforms Shannon Zhao
2016-01-17 3:43 ` Rob Herring
2016-01-18 10:51 ` Mark Rutland
2016-01-18 17:34 ` Stefano Stabellini
2016-01-19 10:25 ` Shannon Zhao
2016-01-19 10:47 ` Mark Rutland
2016-01-19 12:23 ` Stefano Stabellini
2016-01-19 13:13 ` Mark Rutland
2016-01-19 13:18 ` Ard Biesheuvel
2016-01-19 13:43 ` Shannon Zhao
2016-01-19 14:11 ` Stefano Stabellini
2016-01-21 11:50 ` Mark Rutland
2016-01-15 6:55 ` [PATCH v2 13/16] ARM: XEN: Set EFI_PARAVIRT if Xen supports EFI Shannon Zhao
2016-01-18 10:57 ` Mark Rutland
2016-01-15 6:55 ` [PATCH v2 14/16] Xen: EFI: Parse DT parameters for Xen specific UEFI Shannon Zhao
2016-01-18 11:03 ` Mark Rutland
2016-01-18 15:41 ` [Xen-devel] " Stefano Stabellini
2016-01-19 13:19 ` Shannon Zhao
2016-01-19 13:43 ` Mark Rutland
2016-01-19 13:46 ` Shannon Zhao
2016-01-15 6:55 ` [PATCH v2 15/16] XEN: EFI: Move x86 specific codes to architecture directory Shannon Zhao
2016-01-15 6:55 ` [PATCH v2 16/16] ARM64: XEN: Initialize Xen specific UEFI runtime services Shannon Zhao
2016-01-18 11:08 ` Mark Rutland
2016-01-18 17:45 ` Stefano Stabellini
2016-01-18 18:27 ` Mark Rutland
2016-01-19 12:03 ` Stefano Stabellini
2016-01-19 13:03 ` Mark Rutland
2016-01-19 13:31 ` Shannon Zhao
2016-01-19 14:20 ` Stefano Stabellini
2016-01-18 17:03 ` [Xen-devel] " Stefano Stabellini
2016-01-19 13:12 ` Shannon Zhao
2016-01-19 14:24 ` Stefano Stabellini
2016-01-22 3:58 ` Shannon Zhao
2016-01-22 10:57 ` Stefano Stabellini
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