From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andy Shevchenko Subject: Re: [PATCH 0/9] 8250: AMD Carrizo UART PL300 DMA enablement Date: Sun, 13 Dec 2015 04:32:15 +0200 Message-ID: References: <1449199466-6081-1-git-send-email-annie.wang@amd.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Return-path: Received: from mail-qk0-f169.google.com ([209.85.220.169]:34269 "EHLO mail-qk0-f169.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751341AbbLMCcQ (ORCPT ); Sat, 12 Dec 2015 21:32:16 -0500 In-Reply-To: <1449199466-6081-1-git-send-email-annie.wang@amd.com> Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: Wang Hongcheng Cc: Vinod Koul , Mika Westerberg , Joerg Roedel , Greg Kroah-Hartman , "Rafael J. Wysocki" , "linux-acpi@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "linux-serial@vger.kernel.org" , dmaengine , iommu@lists.linux-foundation.org, Borislav Petkov , Huang Rui , Wan Zongshun , Ken Xue , Tony Li On Fri, Dec 4, 2015 at 5:24 AM, Wang Hongcheng wrote: > Hi all, > > As AMD carrizo UART device is compatible with 8250 and has pl330 DMA > IP, our uart driver is serial:8250 and DMA engines are registered by > driver/dma/pl330. The following patches are made, in order to enable > DMA. > > Firstly, we add an universal ACPI amba glue layer to create an amba > device based on ACPI table. Then we alter 8250/Kconfig to support > AMD 8250 device and add quirk for AMD specific request. > Secondly, since pl330 driver only provides dma engine for platform > devices, we add an acpi dma engine interface. > Then we add a new port type for AMD carrizo and set UART registers > and dma rx size as hardware requirement. > In the end, we make our IOMMU driver to support non-pci device, so > UART DMA really works. > I commented on a few patches, thoughI might miss something in the rest. Include me in Cc list next version. > Thanks, > Hongcheng > > Huang Rui (1): > ACPI: Add support for AMBA bus type > > Wan Zongshun (2): > Documentation: Add ivrs_acpihid kernel parameter description > iommu/amd: Add ACPI HID named devices IOMMU driver support > > Wang Hongcheng (6): > 8250/Kconfig: add config option CONFIG_SERIAL_8250_AMD > ACPI: add struct acpi_amba_quirk for AMD pl330 specific device config > dmaengine: pl330: add new items for pl330 private data > dmaengine: pl330: provide ACPI dmaengine interface > dmaengine:pl330: set segment_boundary_mask = 0cffffffff > Serial:8250: New Port Type PORT_AMD_8250 > > Documentation/kernel-parameters.txt | 7 ++ > drivers/acpi/Makefile | 1 + > drivers/acpi/acpi_amba.c | 180 ++++++++++++++++++++++++++++++++++++ > drivers/acpi/acpi_apd.c | 89 +++++++++++++++--- > drivers/dma/pl330.c | 61 ++++++++++-- > drivers/iommu/amd_iommu.c | 165 +++++++++++++++++++++++++++++---- > drivers/iommu/amd_iommu_init.c | 123 +++++++++++++++++++++++- > drivers/iommu/amd_iommu_types.h | 11 +++ > drivers/tty/serial/8250/8250_dw.c | 16 ++++ > drivers/tty/serial/8250/8250_port.c | 9 ++ > drivers/tty/serial/8250/Kconfig | 8 ++ > include/linux/acpi.h | 30 ++++++ > include/linux/amba/pl330.h | 4 + > include/linux/serial_8250.h | 4 + > include/uapi/linux/serial_core.h | 3 +- > include/uapi/linux/serial_reg.h | 2 + > 16 files changed, 673 insertions(+), 40 deletions(-) > create mode 100644 drivers/acpi/acpi_amba.c > > -- > 1.9.1 > > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ -- With Best Regards, Andy Shevchenko