From: sricharan@codeaurora.org (Sricharan)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH V6 06/11] drivers: platform: Configure dma operations at probe time
Date: Mon, 23 Jan 2017 19:44:32 +0530 [thread overview]
Message-ID: <007a01d27583$09279400$1b76bc00$@codeaurora.org> (raw)
In-Reply-To: <20170123120729.GB12593@red-moon>
Hi Lorenzo,
>-----Original Message-----
>From: Lorenzo Pieralisi [mailto:lorenzo.pieralisi at arm.com]
>Sent: Monday, January 23, 2017 5:37 PM
>To: Sricharan R <sricharan@codeaurora.org>
>Cc: robin.murphy at arm.com; will.deacon at arm.com; joro at 8bytes.org; iommu at lists.linux-foundation.org; linux-arm-
>kernel at lists.infradead.org; linux-arm-msm at vger.kernel.org; m.szyprowski at samsung.com; bhelgaas at google.com
>Subject: Re: [PATCH V6 06/11] drivers: platform: Configure dma operations at probe time
>
>[+bjorn]
>
>On Sat, Jan 21, 2017 at 12:45:43AM +0530, Sricharan R wrote:
>> Configuring DMA ops at probe time will allow deferring device probe when
>> the IOMMU isn't available yet. The dma_configure for the device is
>> now called from the generic device_attach callback just before the
>> bus/driver probe is called. This way, configuring the DMA ops for the
>> device would be called at the same place for all bus_types, hence the
>> deferred probing mechanism should work for all buses as well.
>>
>> pci_bus_add_devices (platform/amba)(_device_create/driver_register)
>> | |
>> pci_bus_add_device (device_add/driver_register)
>> | |
>> device_attach device_initial_probe
>> | |
>> __device_attach_driver __device_attach_driver
>> |
>> driver_probe_device
>> |
>> really_probe
>> |
>> dma_configure
>>
>> Similarly on the device/driver_unregister path __device_release_driver is
>> called which inturn calls dma_deconfigure.
>>
>> This patch changes the dma ops configuration time to probe time for
>> both OF and ACPI based devices.
>
>For all device types, inclusive of PCI, so please you have to:
>
>- Update the $SUBJECT
>- Copy linux-pci at vger.kernel.org
>- Copy linux-acpi at vger.kernel org (on the series)
Sure, i will just see till tomorrow for any further comments and
repost with $SUBJECT modified and the lists
Regards,
Sricharan
next prev parent reply other threads:[~2017-01-23 14:14 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-20 19:15 [PATCH V6 00/11] IOMMU probe deferral support Sricharan R
2017-01-20 19:15 ` [PATCH V6 01/11] iommu/of: Refactor of_iommu_configure() for error handling Sricharan R
2017-01-20 19:15 ` [PATCH V6 02/11] iommu/of: Prepare for deferred IOMMU configuration Sricharan R
2017-01-20 19:15 ` [PATCH V6 03/11] of: dma: Move range size workaround to of_dma_get_range() Sricharan R
2017-01-20 19:15 ` [PATCH V6 04/11] of: dma: Make of_dma_deconfigure() public Sricharan R
2017-01-20 19:15 ` [PATCH V6 05/11] ACPI/IORT: Add function to check SMMUs drivers presence Sricharan R
2017-01-20 19:15 ` [PATCH V6 06/11] drivers: platform: Configure dma operations at probe time Sricharan R
2017-01-23 12:07 ` Lorenzo Pieralisi
2017-01-23 14:14 ` Sricharan [this message]
2017-01-23 16:23 ` Sricharan
2017-01-20 19:15 ` [PATCH V6 07/11] iommu: of: Handle IOMMU lookup failure with deferred probing or error Sricharan R
2017-01-20 19:15 ` [PATCH V6 08/11] drivers: acpi: " Sricharan R
2017-01-20 19:15 ` [PATCH V6 09/11] arm64: dma-mapping: Remove the notifier trick to handle early setting of dma_ops Sricharan R
2017-01-20 19:15 ` [PATCH V6 10/11] iommu/arm-smmu: Clean up early-probing workarounds Sricharan R
2017-01-20 19:15 ` [PATCH V6 11/11] ACPI/IORT: Remove linker section for IORT entries probing Sricharan R
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