From: Jiaxun Yang <jiaxun.yang@flygoat.com>
To: Huacai Chen <chenhc@lemote.com>
Cc: "open list:MIPS" <linux-mips@vger.kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
Jason Cooper <jason@lakedaemon.net>,
Marc Zyngier <maz@kernel.org>, Rob Herring <robh+dt@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Allison Randal <allison@lohutok.net>,
LKML <linux-kernel@vger.kernel.org>,
devicetree@vger.kernel.org
Subject: Re: [PATCH v6 02/11] irqchip: loongson-liointc: Workaround LPC IRQ Errata
Date: Wed, 25 Mar 2020 10:31:50 +0800 [thread overview]
Message-ID: <C87B57FD-F4C2-4464-9692-A28DE343FDDB@flygoat.com> (raw)
In-Reply-To: <CAAhV-H7__WmeWZ4w8Kc37WztRZ+-du9nKbVkRJeK7=ZhPaVY3g@mail.gmail.com>
于 2020年3月25日 GMT+08:00 上午9:52:26, Huacai Chen <chenhc@lemote.com> 写到:
>Hi, Jiaxun,
>
>On Tue, Mar 24, 2020 at 11:39 PM Jiaxun Yang <jiaxun.yang@flygoat.com>
>wrote:
>>
>> The 1.0 version of that controller has a bug that status bit
>> of LPC IRQ sometimes doesn't get set correctly.
>>
>> So we can always blame LPC IRQ when spurious interrupt happens
>> at the parent interrupt line which LPC IRQ supposed to route
>> to.
>>
>> Co-developed-by: Huacai Chen <chenhc@lemote.com>
>> Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
>> ---
>> drivers/irqchip/irq-loongson-liointc.c | 16 ++++++++++++++--
>> 1 file changed, 14 insertions(+), 2 deletions(-)
>>
>> diff --git a/drivers/irqchip/irq-loongson-liointc.c
>b/drivers/irqchip/irq-loongson-liointc.c
>> index 8b6d7b8ddaca..d5054e90eab8 100644
>> --- a/drivers/irqchip/irq-loongson-liointc.c
>> +++ b/drivers/irqchip/irq-loongson-liointc.c
>> @@ -32,6 +32,8 @@
>>
>> #define LIOINTC_SHIFT_INTx 4
>>
>> +#define LIOINTC_ERRATA_IRQ 10
>> +
>> struct liointc_handler_data {
>> struct liointc_priv *priv;
>> u32 parent_int_map;
>> @@ -41,6 +43,7 @@ struct liointc_priv {
>> struct irq_chip_generic *gc;
>> struct liointc_handler_data handler[LIOINTC_NUM_PARENT];
>> u8 map_cache[LIOINTC_CHIP_IRQ];
>> + bool have_lpc_irq_errata;
>Maybe has_lpc_irq_errata?
Fixed, thanks.
>
>> };
>>
>> static void liointc_chained_handle_irq(struct irq_desc *desc)
>> @@ -54,8 +57,14 @@ static void liointc_chained_handle_irq(struct
>irq_desc *desc)
>>
>> pending = readl(gc->reg_base + LIOINTC_REG_INTC_STATUS);
>>
>> - if (!pending)
>> - spurious_interrupt();
>> + if (!pending) {
>> + /* Always blame LPC IRQ if we have that bug and LPC
>IRQ is enabled */
>> + if (handler->priv->have_lpc_irq_errata &&
>> + (handler->parent_int_map & ~gc->mask_cache &
>BIT(LIOINTC_ERRATA_IRQ)))
>> + pending = BIT(LIOINTC_ERRATA_IRQ);
>> + else
>> + spurious_interrupt();
>> + }
>>
>> while (pending) {
>> int bit = __ffs(pending);
>> @@ -164,6 +173,9 @@ int __init liointc_of_init(struct device_node
>*node,
>> goto out_iounmap;
>> }
>>
>> + if (of_device_is_compatible(node, "loongson,liointc-1.0"))
>> + priv->have_lpc_irq_errata = true;
>> +
>> sz = of_property_read_variable_u32_array(node,
>"loongson,parent_int_map",
>>
>&of_parent_int_map[0], LIOINTC_NUM_PARENT,
>> LIOINTC_NUM_PARENT);
>> --
>> 2.26.0.rc2
>>
>>
>
>Regards,
>Huacai Chen
--
Jiaxun Yang
next prev parent reply other threads:[~2020-03-25 2:32 UTC|newest]
Thread overview: 175+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-27 8:52 [PATCH 00/13] Modernize Loongson64 Machine Jiaxun Yang
2019-08-27 8:52 ` [PATCH 01/13] MIPS: Loongson64: Rename CPU TYPES Jiaxun Yang
2019-08-27 8:52 ` [PATCH 02/13] MIPS: Loongson64: Sepreate loongson2ef/loongson64 code Jiaxun Yang
2019-08-27 22:05 ` Aaro Koskinen
2019-08-28 0:37 ` Jiaxun Yang
2019-09-02 17:51 ` Aaro Koskinen
2019-08-27 8:52 ` [PATCH 03/13] MAINTAINERS: Fix entries for new loongson64 path Jiaxun Yang
2019-08-27 8:52 ` [PATCH 04/13] irqchip: Add driver for Loongson-3 I/O interrupt controller Jiaxun Yang
2019-08-27 16:45 ` Marc Zyngier
2019-08-28 0:27 ` Jiaxun Yang
2019-08-28 6:59 ` Marc Zyngier
2019-08-28 15:31 ` Jiaxun Yang
2019-08-28 16:02 ` Marc Zyngier
2019-08-27 8:52 ` [PATCH 05/13] dt-bindings: interrupt-controller: Add Loongson-3 IOINTC Jiaxun Yang
2019-08-27 13:08 ` Rob Herring
2019-08-27 8:52 ` [PATCH 06/13] irqchip: Add driver for Loongson-3 HyperTransport interrupt controller Jiaxun Yang
2019-08-27 12:53 ` Marc Zyngier
2019-08-27 8:52 ` [PATCH 07/13] dt-bindings: interrupt-controller: Add Loongson-3 HTINTC Jiaxun Yang
2019-08-27 12:49 ` Rob Herring
2019-08-27 14:08 ` Jiaxun Yang
2019-08-27 8:52 ` [PATCH 08/13] irqchip: i8259: Add plat-poll support Jiaxun Yang
2019-08-27 8:52 ` [PATCH 09/13] irqchip: mips-cpu: Convert to simple domain Jiaxun Yang
2019-08-27 8:52 ` [PATCH 10/13] MIPS: Loongson64: Drop legacy IRQ code Jiaxun Yang
2019-08-27 8:53 ` [PATCH 11/13] dt-bindings: mips: Add loongson cpus & boards Jiaxun Yang
2019-08-27 12:45 ` Rob Herring
2019-08-27 14:18 ` Jiaxun Yang
2019-08-27 20:41 ` Paul Burton
2019-08-28 0:15 ` Jiaxun Yang
2019-09-02 14:50 ` Rob Herring
2019-09-03 9:07 ` Paul Burton
2019-09-04 3:33 ` Huacai Chen
2019-08-27 8:53 ` [PATCH 12/13] MIPS: Loongson64: Add generic dts Jiaxun Yang
2019-08-27 8:53 ` [PATCH 13/13] MIPS: Loongson64: Load built-in dtbs Jiaxun Yang
2019-08-27 13:25 ` Re:[PATCH 00/13] Modernize Loongson64 Machine 陈华才
2019-08-27 14:39 ` [PATCH " Jiaxun Yang
2019-08-30 4:25 ` [PATCH v1 00/18] " Jiaxun Yang
2019-08-30 4:25 ` [PATCH v1 01/18] MIPS: Loongson64: Rename CPU TYPES Jiaxun Yang
2019-08-30 4:25 ` [PATCH v1 02/18] MIPS: Loongson64: separate loongson2ef/loongson64 code Jiaxun Yang
2019-08-30 4:25 ` [PATCH v1 03/18] MAINTAINERS: Fix entries for new loongson64 path Jiaxun Yang
2019-08-30 4:25 ` [PATCH v1 04/18] irqchip: Export generic chip domain map/unmap functions Jiaxun Yang
2019-08-30 4:25 ` [PATCH v1 05/18] irqchip: Add driver for Loongson-3 I/O interrupt controller Jiaxun Yang
2019-08-30 4:25 ` [PATCH v1 06/18] dt-bindings: interrupt-controller: Add Loongson-3 IOINTC Jiaxun Yang
2019-09-05 14:42 ` [PATCH v2 00/19] Modernize Loongson64 Machine Jiaxun Yang
2019-09-05 14:42 ` [PATCH v2 01/19] MIPS: Loongson64: Rename CPU TYPES Jiaxun Yang
2019-09-05 14:42 ` [PATCH v2 02/19] MIPS: Loongson64: separate loongson2ef/loongson64 code Jiaxun Yang
2019-09-10 0:12 ` Paul Burton
2019-09-16 2:23 ` Huacai Chen
2019-09-18 0:38 ` Jiaxun Yang
2019-09-05 14:43 ` [PATCH v2 03/19] MAINTAINERS: Fix entries for new loongson64 path Jiaxun Yang
2019-09-05 14:43 ` [PATCH v2 04/19] irqchip: Export generic chip domain map/unmap functions Jiaxun Yang
2019-09-05 14:43 ` [PATCH v2 05/19] irqchip: Add driver for Loongson-3 I/O interrupt controller Jiaxun Yang
2019-09-05 14:43 ` [PATCH v2 06/19] dt-bindings: interrupt-controller: Add Loongson-3 IOINTC Jiaxun Yang
2019-09-17 21:26 ` Rob Herring
2019-09-05 14:43 ` [PATCH v2 07/19] irqchip: Add driver for Loongson-3 HyperTransport interrupt controller Jiaxun Yang
2019-09-05 14:43 ` [PATCH v2 08/19] dt-bindings: interrupt-controller: Add Loongson-3 HTINTC Jiaxun Yang
2019-09-05 14:43 ` [PATCH v2 09/19] irqchip: i8259: Add plat-poll support Jiaxun Yang
2019-09-05 14:43 ` [PATCH v2 10/19] irqchip: mips-cpu: Convert to simple domain Jiaxun Yang
2019-09-05 14:43 ` [PATCH v2 11/19] MIPS: Loongson64: Drop legacy IRQ code Jiaxun Yang
2019-09-05 14:43 ` [PATCH v2 12/19] dt-bindings: mips: Add loongson boards Jiaxun Yang
2019-09-30 13:23 ` Rob Herring
2019-09-05 14:43 ` [PATCH v2 13/19] dt-bindings: Document loongson vendor-prefix Jiaxun Yang
2019-09-05 14:43 ` [PATCH v2 14/19] MIPS: Loongson64: Add generic dts Jiaxun Yang
2019-09-07 2:53 ` Huacai Chen
2019-09-07 3:14 ` Jiaxun Yang
2019-09-30 13:20 ` Rob Herring
2019-09-05 14:43 ` [PATCH v2 15/19] MIPS: Loongson64: Load built-in dtbs Jiaxun Yang
2019-09-05 14:43 ` [PATCH v2 16/19] GPIO: loongson: Drop Loongson-3A/3B support Jiaxun Yang
2019-09-05 14:43 ` [PATCH v2 17/19] MIPS: Loongson: Regenerate defconfigs Jiaxun Yang
2019-09-05 14:43 ` [PATCH v2 18/19] MAINTAINERS: Add new pathes to LOONGSON64 ARCHITECTURE Jiaxun Yang
2019-09-05 14:43 ` [PATCH v2 19/19] MAINTAINERS: Add myself as maintainer of LOONGSON64 Jiaxun Yang
2019-09-07 3:13 ` [PATCH v2 00/19] Modernize Loongson64 Machine Huacai Chen
2019-09-12 6:30 ` [PATCH 00/13] " Matt Turner
2019-09-18 0:33 ` Jiaxun Yang
2020-01-12 8:14 ` [PATCH v3 00/10] " Jiaxun Yang
2020-01-12 8:14 ` [PATCH v3 01/10] dt-bindings: Document loongson vendor-prefix Jiaxun Yang
2020-01-15 18:59 ` Paul Burton
2020-01-12 8:14 ` [PATCH v3 02/10] irqchip: Add driver for Loongson I/O interrupt controller Jiaxun Yang
2020-01-12 8:14 ` [PATCH v3 03/10] dt-bindings: interrupt-controller: Add Loongson IOINTC Jiaxun Yang
2020-01-13 3:44 ` Huacai Chen
2020-01-13 3:40 ` Jiaxun Yang
2020-01-12 8:14 ` [PATCH v3 04/10] irqchip: Add driver for Loongson-3 HyperTransport PIC controller Jiaxun Yang
2020-01-12 8:14 ` [PATCH v3 05/10] dt-bindings: interrupt-controller: Add Loongson-3 HTPIC Jiaxun Yang
2020-01-12 8:14 ` [PATCH v3 06/10] irqchip: mips-cpu: Convert to simple domain Jiaxun Yang
2020-01-12 8:14 ` [PATCH v3 07/10] MIPS: Loongson64: Drop legacy IRQ code Jiaxun Yang
2020-01-12 8:14 ` [PATCH v3 08/10] dt-bindings: mips: Add loongson boards Jiaxun Yang
2020-01-13 3:39 ` Huacai Chen
2020-01-12 8:14 ` [PATCH v3 09/10] MIPS: Loongson64: Add generic dts Jiaxun Yang
2020-01-12 8:14 ` [PATCH v3 10/10] MIPS: Loongson64: Load built-in dtbs Jiaxun Yang
2020-01-13 3:38 ` [PATCH v3 00/10] Modernize Loongson64 Machine Huacai Chen
2020-02-21 5:09 ` [PATCH v4 00/10] Modernize Loongson64 Machine v4 Jiaxun Yang
2020-02-21 5:09 ` [PATCH v4 01/10] irqchip: Add driver for Loongson I/O Local Interrupt Controller Jiaxun Yang
2020-02-29 2:30 ` 回复:[PATCH " Jiaxun Yang
2020-03-07 14:50 ` [PATCH " Marc Zyngier
2020-02-21 5:09 ` [PATCH v4 02/10] dt-bindings: interrupt-controller: Add Loongson LIOINTC Jiaxun Yang
2020-02-21 5:09 ` [PATCH v4 03/10] irqchip: Add driver for Loongson-3 HyperTransport PIC controller Jiaxun Yang
2020-03-07 15:01 ` Marc Zyngier
2020-02-21 5:09 ` [PATCH v4 04/10] dt-bindings: interrupt-controller: Add Loongson-3 HTPIC Jiaxun Yang
2020-02-21 5:09 ` [PATCH v4 05/10] irqchip: mips-cpu: Convert to simple domain Jiaxun Yang
2020-02-21 5:09 ` [PATCH v4 06/10] MIPS: Loongson64: Drop legacy IRQ code Jiaxun Yang
2020-02-21 5:09 ` [PATCH v4 07/10] dt-bindings: mips: Add loongson boards Jiaxun Yang
2020-02-26 16:52 ` Rob Herring
2020-02-29 2:28 ` Jiaxun Yang
2020-02-21 5:09 ` [PATCH v4 08/10] MIPS: Loongson64: Add generic dts Jiaxun Yang
2020-02-21 5:09 ` [PATCH v4 09/10] MIPS: Loongson64: Load built-in dtbs Jiaxun Yang
2020-02-21 5:09 ` [PATCH v4 10/10] MIPS: Loongson64: Move MIPS_CPU_IRQ_BASE Jiaxun Yang
2020-03-18 6:20 ` [PATCH v5 00/11] Modernize Loongson64 Machine v5 Jiaxun Yang
2020-03-18 6:20 ` [PATCH v5 01/11] irqchip: Add driver for Loongson I/O Local Interrupt Controller Jiaxun Yang
2020-03-18 6:20 ` [PATCH v5 02/11] irqchip: loongson-liointc: Workaround LPC IRQ Errata Jiaxun Yang
2020-03-18 6:20 ` [PATCH v5 03/11] dt-bindings: interrupt-controller: Add Loongson LIOINTC Jiaxun Yang
2020-03-18 6:20 ` [PATCH v5 04/11] irqchip: Add driver for Loongson-3 HyperTransport PIC controller Jiaxun Yang
2020-03-21 14:14 ` Marc Zyngier
2020-03-18 6:20 ` [PATCH v5 05/11] dt-bindings: interrupt-controller: Add Loongson-3 HTPIC Jiaxun Yang
2020-03-18 6:20 ` [PATCH v5 06/11] irqchip: mips-cpu: Convert to simple domain Jiaxun Yang
2020-03-18 6:20 ` [PATCH v5 07/11] MIPS: Loongson64: Drop legacy IRQ code Jiaxun Yang
2020-03-18 6:20 ` [PATCH v5 08/11] dt-bindings: mips: Add loongson boards Jiaxun Yang
2020-03-20 22:36 ` Rob Herring
2020-03-22 5:33 ` Zhou Yanjie
2020-03-18 6:20 ` [PATCH v5 09/11] MIPS: Loongson64: Add generic dts Jiaxun Yang
2020-03-18 6:20 ` [PATCH v5 10/11] MIPS: Loongson64: Load built-in dtbs Jiaxun Yang
2020-03-18 6:20 ` [PATCH v5 11/11] MIPS: Loongson64: Move MIPS_CPU_IRQ_BASE Jiaxun Yang
2020-03-24 15:35 ` [PATCH v6 00/11] Modernize Loongson64 Machine v6 Jiaxun Yang
2020-03-24 15:35 ` [PATCH v6 01/11] irqchip: Add driver for Loongson I/O Local Interrupt Controller Jiaxun Yang
2020-03-24 15:35 ` [PATCH v6 02/11] irqchip: loongson-liointc: Workaround LPC IRQ Errata Jiaxun Yang
2020-03-25 1:52 ` Huacai Chen
2020-03-25 2:31 ` Jiaxun Yang [this message]
2020-03-24 15:36 ` [PATCH v6 03/11] dt-bindings: interrupt-controller: Add Loongson LIOINTC Jiaxun Yang
2020-03-24 15:36 ` [PATCH v6 04/11] irqchip: Add driver for Loongson-3 HyperTransport PIC controller Jiaxun Yang
2020-03-24 15:36 ` [PATCH v6 05/11] dt-bindings: interrupt-controller: Add Loongson-3 HTPIC Jiaxun Yang
2020-03-24 15:36 ` [PATCH v6 06/11] irqchip: mips-cpu: Convert to simple domain Jiaxun Yang
2020-03-24 15:36 ` [PATCH v6 07/11] MIPS: Loongson64: Drop legacy IRQ code Jiaxun Yang
2020-03-24 15:36 ` [PATCH v6 08/11] dt-bindings: mips: Add loongson boards Jiaxun Yang
2020-03-24 15:36 ` [PATCH v6 09/11] MIPS: Loongson64: Add generic dts Jiaxun Yang
2020-03-25 2:11 ` Huacai Chen
2020-03-25 2:08 ` Jiaxun Yang
2020-03-25 2:49 ` Huacai Chen
2020-03-24 15:36 ` [PATCH v6 10/11] MIPS: Loongson64: Load built-in dtbs Jiaxun Yang
2020-03-24 15:36 ` [PATCH v6 11/11] MIPS: Loongson64: Move MIPS_CPU_IRQ_BASE Jiaxun Yang
2020-03-24 15:47 ` [PATCH v6 00/11] Modernize Loongson64 Machine v6 Marc Zyngier
2020-03-24 15:51 ` Jiaxun Yang
2020-03-24 18:07 ` Thomas Bogendoerfer
2020-03-25 2:28 ` [PATCH v7 00/12] " Jiaxun Yang
2020-03-25 2:28 ` [PATCH v7 01/12] irqchip: Add driver for Loongson I/O Local Interrupt Controller Jiaxun Yang
2020-03-25 11:25 ` Paul Cercueil
2020-03-25 11:35 ` Marc Zyngier
2020-03-25 2:28 ` [PATCH v7 01/12] MIPS: Loongson: Do not initialise statics to 0 Jiaxun Yang
2020-03-25 2:28 ` [PATCH v7 02/12] irqchip: loongson-liointc: Workaround LPC IRQ Errata Jiaxun Yang
2020-03-25 2:28 ` [PATCH v7 02/12] MIPS: DTS: CI20: add DT node for IR sensor Jiaxun Yang
2020-03-25 2:28 ` [PATCH v7 03/12] dt-bindings: interrupt-controller: Add Loongson LIOINTC Jiaxun Yang
2020-03-25 3:54 ` [PATCH v8 00/11] Modernize Loongson64 Machine v8 Jiaxun Yang
2020-03-25 3:54 ` [PATCH v8 01/11] irqchip: Add driver for Loongson I/O Local Interrupt Controller Jiaxun Yang
2020-03-25 3:54 ` [PATCH v8 02/11] irqchip: loongson-liointc: Workaround LPC IRQ Errata Jiaxun Yang
2020-03-25 3:54 ` [PATCH v8 03/11] dt-bindings: interrupt-controller: Add Loongson LIOINTC Jiaxun Yang
2020-03-25 3:54 ` [PATCH v8 04/11] irqchip: Add driver for Loongson-3 HyperTransport PIC controller Jiaxun Yang
2020-03-25 3:54 ` [PATCH v8 05/11] dt-bindings: interrupt-controller: Add Loongson-3 HTPIC Jiaxun Yang
2020-03-25 3:54 ` [PATCH v8 06/11] irqchip: mips-cpu: Convert to simple domain Jiaxun Yang
2020-03-25 12:37 ` Thomas Bogendoerfer
2020-03-25 12:48 ` Jiaxun Yang
2020-03-25 13:00 ` Marc Zyngier
2020-03-25 13:07 ` Jiaxun Yang
2020-03-25 13:57 ` Marc Zyngier
2020-03-25 13:59 ` Jiaxun Yang
2020-03-25 14:15 ` Marc Zyngier
2020-03-25 14:31 ` Jiaxun Yang
2020-03-25 15:02 ` Marc Zyngier
2020-03-25 15:04 ` Thomas Bogendoerfer
2020-03-25 15:09 ` Jiaxun Yang
2020-03-25 15:46 ` Thomas Bogendoerfer
2020-03-25 16:02 ` Jiaxun Yang
2020-03-25 16:31 ` Thomas Bogendoerfer
2020-03-25 3:55 ` [PATCH v8 07/11] MIPS: Loongson64: Drop legacy IRQ code Jiaxun Yang
2020-03-25 3:55 ` [PATCH v8 08/11] dt-bindings: mips: Add loongson boards Jiaxun Yang
2020-03-25 3:55 ` [PATCH v8 09/11] MIPS: Loongson64: Add generic dts Jiaxun Yang
2020-03-25 3:55 ` [PATCH v8 10/11] MIPS: Loongson64: Load built-in dtbs Jiaxun Yang
2020-03-25 3:55 ` [PATCH v8 11/11] MAINTAINERS: Update Loongson64 entry Jiaxun Yang
2020-03-25 17:33 ` [PATCH v8 00/11] Modernize Loongson64 Machine v8 Thomas Bogendoerfer
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