[{"id":1767224,"web_url":"http://patchwork.ozlabs.org/comment/1767224/","msgid":"","list_archive_url":null,"date":"2017-09-12T16:22:19","subject":"Re: [Qemu-devel] [PATCH] mps2-an511: Fix wiring of UART overflow\n\tinterrupt lines","submitter":{"id":70924,"url":"http://patchwork.ozlabs.org/api/people/70924/","name":"Philippe Mathieu-Daudé","email":"f4bug@amsat.org"},"content":"(CC'ed qemu-arm)\n\nHi Peter,\n\nOn 09/12/2017 01:13 PM, Peter Maydell wrote:\n> Fix an error that meant we were wiring every UART's overflow\n> interrupts into the same inputs 0 and 1 of the OR gate,\n> rather than giving each its own input.\n\noops tricky to catch\n\n> \n> Cc: qemu-stable@nongnu.org\n> Signed-off-by: Peter Maydell \n> ---\n> hw/arm/mps2.c | 4 ++--\n> 1 file changed, 2 insertions(+), 2 deletions(-)\n> \n> diff --git a/hw/arm/mps2.c b/hw/arm/mps2.c\n> index abb0ab6..769cff8 100644\n> --- a/hw/arm/mps2.c\n> +++ b/hw/arm/mps2.c\n\n /* The overflow IRQs for all UARTs are ORed together.\n * Tx and Rx IRQs for each UART are ORed together.\n */\n\ncan you update this comment?\n\nReviewed-by: Philippe Mathieu-Daudé \n\n> @@ -287,8 +287,8 @@ static void mps2_common_init(MachineState *machine)\n> cmsdk_apb_uart_create(uartbase[i],\n> qdev_get_gpio_in(txrx_orgate_dev, 0),\n> qdev_get_gpio_in(txrx_orgate_dev, 1),\n> - qdev_get_gpio_in(orgate_dev, 0),\n> - qdev_get_gpio_in(orgate_dev, 1),\n> + qdev_get_gpio_in(orgate_dev, i * 2),\n> + qdev_get_gpio_in(orgate_dev, i * 2 + 1),\n> NULL,\n> uartchr, SYSCLK_FRQ);\n> }\n>","headers":{"Return-Path":"","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@bilbo.ozlabs.org","Authentication-Results":["ozlabs.org;\n\tspf=pass (mailfrom) smtp.mailfrom=nongnu.org\n\t(client-ip=2001:4830:134:3::11; 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Linux x86_64; rv:52.0) Gecko/20100101\n\tThunderbird/52.3.0","MIME-Version":"1.0","In-Reply-To":"<1505232834-20890-1-git-send-email-peter.maydell@linaro.org>","Content-Type":"text/plain; charset=utf-8; format=flowed","Content-Language":"en-US","Content-Transfer-Encoding":"8bit","X-detected-operating-system":"by eggs.gnu.org: Genre and OS details not\n\trecognized.","X-Received-From":"2607:f8b0:400d:c0d::243","Subject":"Re: [Qemu-devel] [PATCH] mps2-an511: Fix wiring of UART overflow\n\tinterrupt lines","X-BeenThere":"qemu-devel@nongnu.org","X-Mailman-Version":"2.1.21","Precedence":"list","List-Id":"","List-Unsubscribe":",\n\t","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n\t","Cc":"qemu-arm@nongnu.org, qemu-stable@nongnu.org, patches@linaro.org","Errors-To":"qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org","Sender":"\"Qemu-devel\"\n\t"}},{"id":1767231,"web_url":"http://patchwork.ozlabs.org/comment/1767231/","msgid":"","list_archive_url":null,"date":"2017-09-12T16:40:27","subject":"Re: [Qemu-devel] [PATCH] mps2-an511: Fix wiring of UART overflow\n\tinterrupt lines","submitter":{"id":5111,"url":"http://patchwork.ozlabs.org/api/people/5111/","name":"Peter Maydell","email":"peter.maydell@linaro.org"},"content":"On 12 September 2017 at 17:22, Philippe Mathieu-Daudé wrote:\n> (CC'ed qemu-arm)\n>\n> Hi Peter,\n>\n> On 09/12/2017 01:13 PM, Peter Maydell wrote:\n>>\n>> Fix an error that meant we were wiring every UART's overflow\n>> interrupts into the same inputs 0 and 1 of the OR gate,\n>> rather than giving each its own input.\n>\n>\n> oops tricky to catch\n>\n>>\n>> Cc: qemu-stable@nongnu.org\n>> Signed-off-by: Peter Maydell \n>> ---\n>> hw/arm/mps2.c | 4 ++--\n>> 1 file changed, 2 insertions(+), 2 deletions(-)\n>>\n>> diff --git a/hw/arm/mps2.c b/hw/arm/mps2.c\n>> index abb0ab6..769cff8 100644\n>> --- a/hw/arm/mps2.c\n>> +++ b/hw/arm/mps2.c\n>\n>\n> /* The overflow IRQs for all UARTs are ORed together.\n> * Tx and Rx IRQs for each UART are ORed together.\n> */\n>\n> can you update this comment?\n\nThe comment is correct. \"txrx_orgate_dev\" is a 2-input OR gate,\nwhich we create one of per UART. It ORs together the TX IRQ\nand the RX IRQ. \"orgate_dev\" is a 10-input OR gate, which ORs\ntogether the TX overflow IRQ and the RX overflow IRQ from each\nUART. The bug here is just that we were using the wrong input\npins on orgate_dev.\n\nthanks\n-- PMM","headers":{"Return-Path":"","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@bilbo.ozlabs.org","Authentication-Results":["ozlabs.org;\n\tspf=pass (mailfrom) smtp.mailfrom=nongnu.org\n\t(client-ip=2001:4830:134:3::11; helo=lists.gnu.org;\n\tenvelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org;\n\treceiver=)","ozlabs.org;\n\tdkim=fail reason=\"signature verification failed\" (1024-bit key;\n\tunprotected) header.d=linaro.org header.i=@linaro.org\n\theader.b=\"RgYi+EDW\"; dkim-atps=neutral"],"Received":["from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11])\n\t(using TLSv1 with cipher AES256-SHA (256/256 bits))\n\t(No client certificate requested)\n\tby ozlabs.org (Postfix) with ESMTPS id 3xs9YJ6R3Pz9s7g\n\tfor ;\n\tWed, 13 Sep 2017 02:41:40 +1000 (AEST)","from localhost ([::1]:37169 helo=lists.gnu.org)\n\tby lists.gnu.org with esmtp (Exim 4.71) (envelope-from\n\t)\n\tid 1droFm-0000JH-Uj\n\tfor incoming@patchwork.ozlabs.org; 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charset=\"UTF-8\"","Content-Transfer-Encoding":"quoted-printable","X-detected-operating-system":"by eggs.gnu.org: Genre and OS details not\n\trecognized.","X-Received-From":"2a00:1450:400c:c09::22e","Subject":"Re: [Qemu-devel] [PATCH] mps2-an511: Fix wiring of UART overflow\n\tinterrupt lines","X-BeenThere":"qemu-devel@nongnu.org","X-Mailman-Version":"2.1.21","Precedence":"list","List-Id":"","List-Unsubscribe":",\n\t","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n\t","Cc":"\"patches@linaro.org\" ,\n\tQEMU Developers , qemu-arm , \n\tqemu-stable ","Errors-To":"qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org","Sender":"\"Qemu-devel\"\n\t"}},{"id":1767438,"web_url":"http://patchwork.ozlabs.org/comment/1767438/","msgid":"","list_archive_url":null,"date":"2017-09-12T23:55:40","subject":"Re: [Qemu-devel] [PATCH] mps2-an511: Fix wiring of UART overflow\n\tinterrupt lines","submitter":{"id":64571,"url":"http://patchwork.ozlabs.org/api/people/64571/","name":"Alistair Francis","email":"alistair23@gmail.com"},"content":"On Tue, Sep 12, 2017 at 9:13 AM, Peter Maydell wrote:\n> Fix an error that meant we were wiring every UART's overflow\n> interrupts into the same inputs 0 and 1 of the OR gate,\n> rather than giving each its own input.\n>\n> Cc: qemu-stable@nongnu.org\n> Signed-off-by: Peter Maydell \n\nReviewed-by: Alistair Francis \n\nThanks,\nAlistair\n\n> ---\n> hw/arm/mps2.c | 4 ++--\n> 1 file changed, 2 insertions(+), 2 deletions(-)\n>\n> diff --git a/hw/arm/mps2.c b/hw/arm/mps2.c\n> index abb0ab6..769cff8 100644\n> --- a/hw/arm/mps2.c\n> +++ b/hw/arm/mps2.c\n> @@ -287,8 +287,8 @@ static void mps2_common_init(MachineState *machine)\n> cmsdk_apb_uart_create(uartbase[i],\n> qdev_get_gpio_in(txrx_orgate_dev, 0),\n> qdev_get_gpio_in(txrx_orgate_dev, 1),\n> - qdev_get_gpio_in(orgate_dev, 0),\n> - qdev_get_gpio_in(orgate_dev, 1),\n> + qdev_get_gpio_in(orgate_dev, i * 2),\n> + qdev_get_gpio_in(orgate_dev, i * 2 + 1),\n> NULL,\n> uartchr, SYSCLK_FRQ);\n> }\n> --\n> 2.7.4\n>\n>","headers":{"Return-Path":"","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@bilbo.ozlabs.org","Authentication-Results":["ozlabs.org;\n\tspf=pass (mailfrom) smtp.mailfrom=nongnu.org\n\t(client-ip=2001:4830:134:3::11; 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charset=\"UTF-8\"","X-detected-operating-system":"by eggs.gnu.org: Genre and OS details not\n\trecognized.","X-Received-From":"2a00:1450:400c:c0c::244","Subject":"Re: [Qemu-devel] [PATCH] mps2-an511: Fix wiring of UART overflow\n\tinterrupt lines","X-BeenThere":"qemu-devel@nongnu.org","X-Mailman-Version":"2.1.21","Precedence":"list","List-Id":"","List-Unsubscribe":",\n\t","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n\t","Cc":"Patch Tracking ,\n\t\"qemu-devel@nongnu.org Developers\" ,\n\tqemu-stable@nongnu.org","Errors-To":"qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org","Sender":"\"Qemu-devel\"\n\t"}}]