| Message ID | 1403692675-26503-1-git-send-email-marc.zyngier@arm.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Wed, Jun 25, 2014 at 11:37:54AM +0100, Marc Zyngier wrote: > All the Cortex-{A7,A15} implementations are using a GICv2. Same for > the current arm64 platforms. > > Turns out that most of these platforms have described their GIC CPU > interface size as being 4kB. while it is actually 8kB (the GICC_DIR > register lives at offset 0x1000). > > This was found when converting the GIC driver to use EOImode==1 on > GICv2-based systems. It uses the GICC_DIR register, and the result > is a very early firework... > > Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> > --- > arch/arm/boot/dts/axm55xx.dtsi | 2 +- > arch/arm/boot/dts/dra7.dtsi | 2 +- > arch/arm/boot/dts/ecx-2000.dts | 2 +- > arch/arm/boot/dts/exynos3250.dtsi | 2 +- > arch/arm/boot/dts/exynos5.dtsi | 2 +- > arch/arm/boot/dts/exynos5260.dtsi | 2 +- > arch/arm/boot/dts/exynos5410.dtsi | 2 +- > arch/arm/boot/dts/exynos5440.dtsi | 2 +- > arch/arm/boot/dts/omap5.dtsi | 2 +- > arch/arm/boot/dts/r8a73a4.dtsi | 2 +- > arch/arm/boot/dts/r8a7790.dtsi | 2 +- > arch/arm/boot/dts/r8a7791.dtsi | 2 +- > arch/arm/boot/dts/sun6i-a31.dtsi | 2 +- > arch/arm/boot/dts/sun7i-a20.dtsi | 2 +- > arch/arm/boot/dts/tegra114.dtsi | 2 +- > arch/arm/boot/dts/tegra124.dtsi | 2 +- > arch/arm/boot/dts/vexpress-v2p-ca15-tc1.dts | 2 +- > arch/arm/boot/dts/vexpress-v2p-ca15_a7.dts | 2 +- > arch/arm64/boot/dts/apm-storm.dtsi | 2 +- > arch/arm64/boot/dts/foundation-v8.dts | 2 +- > arch/arm64/boot/dts/rtsm_ve-aemv8a.dts | 2 +- > 21 files changed, 21 insertions(+), 21 deletions(-) For the Tegra114 and Tegra124 patches: Tested-by: Thierry Reding <treding@nvidia.com> Acked-by: Thierry Reding <treding@nvidia.com>
On Wed, Jun 25, 2014 at 5:37 AM, Marc Zyngier <marc.zyngier@arm.com> wrote: > All the Cortex-{A7,A15} implementations are using a GICv2. Same for > the current arm64 platforms. > > Turns out that most of these platforms have described their GIC CPU > interface size as being 4kB. while it is actually 8kB (the GICC_DIR > register lives at offset 0x1000). > > This was found when converting the GIC driver to use EOImode==1 on > GICv2-based systems. It uses the GICC_DIR register, and the result > is a very early firework... What's your plan for making the kernel change? Updating the dts files is good, but that doesn't immediately help you if you have old dtbs. > Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> > --- > arch/arm/boot/dts/axm55xx.dtsi | 2 +- > arch/arm/boot/dts/dra7.dtsi | 2 +- > arch/arm/boot/dts/ecx-2000.dts | 2 +- Acked-by: Rob Herring <robh@kernel.org> Rob -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On Wed, Jun 25 2014 at 01:21:17 PM, Rob Herring <robherring2@gmail.com> wrote: > On Wed, Jun 25, 2014 at 5:37 AM, Marc Zyngier <marc.zyngier@arm.com> wrote: >> All the Cortex-{A7,A15} implementations are using a GICv2. Same for >> the current arm64 platforms. >> >> Turns out that most of these platforms have described their GIC CPU >> interface size as being 4kB. while it is actually 8kB (the GICC_DIR >> register lives at offset 0x1000). >> >> This was found when converting the GIC driver to use EOImode==1 on >> GICv2-based systems. It uses the GICC_DIR register, and the result >> is a very early firework... > > What's your plan for making the kernel change? Updating the dts files > is good, but that doesn't immediately help you if you have old dtbs. See at the end of https://lkml.org/lkml/2014/6/25/243 Basically, we stay with a GICv1 behaviour if we detect the mess. >> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> >> --- >> arch/arm/boot/dts/axm55xx.dtsi | 2 +- >> arch/arm/boot/dts/dra7.dtsi | 2 +- >> arch/arm/boot/dts/ecx-2000.dts | 2 +- > > Acked-by: Rob Herring <robh@kernel.org> Thanks, M.
On Wed, Jun 25, 2014 at 11:37:54AM +0100, Marc Zyngier wrote: > All the Cortex-{A7,A15} implementations are using a GICv2. Same for > the current arm64 platforms. > > Turns out that most of these platforms have described their GIC CPU > interface size as being 4kB. while it is actually 8kB (the GICC_DIR > register lives at offset 0x1000). > > This was found when converting the GIC driver to use EOImode==1 on > GICv2-based systems. It uses the GICC_DIR register, and the result > is a very early firework... > > Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Just tested this on an Allwinner A31. Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com> Tested-by: Maxime Ripard <maxime.ripard@free-electrons.com> Thanks! Maxime
diff --git a/arch/arm/boot/dts/axm55xx.dtsi b/arch/arm/boot/dts/axm55xx.dtsi index ea288f0..40aacc9 100644 --- a/arch/arm/boot/dts/axm55xx.dtsi +++ b/arch/arm/boot/dts/axm55xx.dtsi @@ -62,7 +62,7 @@ #address-cells = <0>; interrupt-controller; reg = <0x20 0x01001000 0 0x1000>, - <0x20 0x01002000 0 0x1000>, + <0x20 0x01002000 0 0x2000>, <0x20 0x01004000 0 0x2000>, <0x20 0x01006000 0 0x2000>; interrupts = <GIC_PPI 9 (GIC_CPU_MASK_SIMPLE(4) | diff --git a/arch/arm/boot/dts/dra7.dtsi b/arch/arm/boot/dts/dra7.dtsi index c29945e..65329ff 100644 --- a/arch/arm/boot/dts/dra7.dtsi +++ b/arch/arm/boot/dts/dra7.dtsi @@ -46,7 +46,7 @@ interrupt-controller; #interrupt-cells = <3>; reg = <0x48211000 0x1000>, - <0x48212000 0x1000>, + <0x48212000 0x2000>, <0x48214000 0x2000>, <0x48216000 0x2000>; interrupts = <GIC_PPI 9 (GIC_CPU_MASK_SIMPLE(2) | IRQ_TYPE_LEVEL_HIGH)>; diff --git a/arch/arm/boot/dts/ecx-2000.dts b/arch/arm/boot/dts/ecx-2000.dts index 2ccbb57f..c15e7e0 100644 --- a/arch/arm/boot/dts/ecx-2000.dts +++ b/arch/arm/boot/dts/ecx-2000.dts @@ -99,7 +99,7 @@ interrupt-controller; interrupts = <1 9 0xf04>; reg = <0xfff11000 0x1000>, - <0xfff12000 0x1000>, + <0xfff12000 0x2000>, <0xfff14000 0x2000>, <0xfff16000 0x2000>; }; diff --git a/arch/arm/boot/dts/exynos3250.dtsi b/arch/arm/boot/dts/exynos3250.dtsi index 3e678fa..bbd177a 100644 --- a/arch/arm/boot/dts/exynos3250.dtsi +++ b/arch/arm/boot/dts/exynos3250.dtsi @@ -173,7 +173,7 @@ #interrupt-cells = <3>; interrupt-controller; reg = <0x10481000 0x1000>, - <0x10482000 0x1000>, + <0x10482000 0x2000>, <0x10484000 0x2000>, <0x10486000 0x2000>; interrupts = <1 9 0xf04>; diff --git a/arch/arm/boot/dts/exynos5.dtsi b/arch/arm/boot/dts/exynos5.dtsi index 79d0608..15fdc3b 100644 --- a/arch/arm/boot/dts/exynos5.dtsi +++ b/arch/arm/boot/dts/exynos5.dtsi @@ -44,7 +44,7 @@ #interrupt-cells = <3>; interrupt-controller; reg = <0x10481000 0x1000>, - <0x10482000 0x1000>, + <0x10482000 0x2000>, <0x10484000 0x2000>, <0x10486000 0x2000>; interrupts = <1 9 0xf04>; diff --git a/arch/arm/boot/dts/exynos5260.dtsi b/arch/arm/boot/dts/exynos5260.dtsi index 5398a60..c0e2341 100644 --- a/arch/arm/boot/dts/exynos5260.dtsi +++ b/arch/arm/boot/dts/exynos5260.dtsi @@ -161,7 +161,7 @@ #size-cells = <0>; interrupt-controller; reg = <0x10481000 0x1000>, - <0x10482000 0x1000>, + <0x10482000 0x2000>, <0x10484000 0x2000>, <0x10486000 0x2000>; interrupts = <1 9 0xf04>; diff --git a/arch/arm/boot/dts/exynos5410.dtsi b/arch/arm/boot/dts/exynos5410.dtsi index 3839c26..aa76aa5 100644 --- a/arch/arm/boot/dts/exynos5410.dtsi +++ b/arch/arm/boot/dts/exynos5410.dtsi @@ -76,7 +76,7 @@ #interrupt-cells = <3>; interrupt-controller; reg = <0x10481000 0x1000>, - <0x10482000 0x1000>, + <0x10482000 0x2000>, <0x10484000 0x2000>, <0x10486000 0x2000>; interrupts = <1 9 0xf04>; diff --git a/arch/arm/boot/dts/exynos5440.dtsi b/arch/arm/boot/dts/exynos5440.dtsi index ae3a17c..fa9180e 100644 --- a/arch/arm/boot/dts/exynos5440.dtsi +++ b/arch/arm/boot/dts/exynos5440.dtsi @@ -35,7 +35,7 @@ #interrupt-cells = <3>; interrupt-controller; reg = <0x2E1000 0x1000>, - <0x2E2000 0x1000>, + <0x2E2000 0x2000>, <0x2E4000 0x2000>, <0x2E6000 0x2000>; interrupts = <1 9 0xf04>; diff --git a/arch/arm/boot/dts/omap5.dtsi b/arch/arm/boot/dts/omap5.dtsi index 3bfda16c..8915faf 100644 --- a/arch/arm/boot/dts/omap5.dtsi +++ b/arch/arm/boot/dts/omap5.dtsi @@ -93,7 +93,7 @@ interrupt-controller; #interrupt-cells = <3>; reg = <0x48211000 0x1000>, - <0x48212000 0x1000>, + <0x48212000 0x2000>, <0x48214000 0x2000>, <0x48216000 0x2000>; }; diff --git a/arch/arm/boot/dts/r8a73a4.dtsi b/arch/arm/boot/dts/r8a73a4.dtsi index 82c5ac8..65c0bd4 100644 --- a/arch/arm/boot/dts/r8a73a4.dtsi +++ b/arch/arm/boot/dts/r8a73a4.dtsi @@ -36,7 +36,7 @@ #address-cells = <0>; interrupt-controller; reg = <0 0xf1001000 0 0x1000>, - <0 0xf1002000 0 0x1000>, + <0 0xf1002000 0 0x2000>, <0 0xf1004000 0 0x2000>, <0 0xf1006000 0 0x2000>; interrupts = <1 9 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_HIGH)>; diff --git a/arch/arm/boot/dts/r8a7790.dtsi b/arch/arm/boot/dts/r8a7790.dtsi index 7ff2960..b1ada72 100644 --- a/arch/arm/boot/dts/r8a7790.dtsi +++ b/arch/arm/boot/dts/r8a7790.dtsi @@ -102,7 +102,7 @@ #address-cells = <0>; interrupt-controller; reg = <0 0xf1001000 0 0x1000>, - <0 0xf1002000 0 0x1000>, + <0 0xf1002000 0 0x2000>, <0 0xf1004000 0 0x2000>, <0 0xf1006000 0 0x2000>; interrupts = <1 9 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_HIGH)>; diff --git a/arch/arm/boot/dts/r8a7791.dtsi b/arch/arm/boot/dts/r8a7791.dtsi index 8d7ffae..c0f2a35 100644 --- a/arch/arm/boot/dts/r8a7791.dtsi +++ b/arch/arm/boot/dts/r8a7791.dtsi @@ -61,7 +61,7 @@ #address-cells = <0>; interrupt-controller; reg = <0 0xf1001000 0 0x1000>, - <0 0xf1002000 0 0x1000>, + <0 0xf1002000 0 0x2000>, <0 0xf1004000 0 0x2000>, <0 0xf1006000 0 0x2000>; interrupts = <1 9 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_HIGH)>; diff --git a/arch/arm/boot/dts/sun6i-a31.dtsi b/arch/arm/boot/dts/sun6i-a31.dtsi index a9dfa12..c8428326 100644 --- a/arch/arm/boot/dts/sun6i-a31.dtsi +++ b/arch/arm/boot/dts/sun6i-a31.dtsi @@ -683,7 +683,7 @@ gic: interrupt-controller@01c81000 { compatible = "arm,cortex-a7-gic", "arm,cortex-a15-gic"; reg = <0x01c81000 0x1000>, - <0x01c82000 0x1000>, + <0x01c82000 0x2000>, <0x01c84000 0x2000>, <0x01c86000 0x2000>; interrupt-controller; diff --git a/arch/arm/boot/dts/sun7i-a20.dtsi b/arch/arm/boot/dts/sun7i-a20.dtsi index 01e9466..175c547 100644 --- a/arch/arm/boot/dts/sun7i-a20.dtsi +++ b/arch/arm/boot/dts/sun7i-a20.dtsi @@ -945,7 +945,7 @@ gic: interrupt-controller@01c81000 { compatible = "arm,cortex-a7-gic", "arm,cortex-a15-gic"; reg = <0x01c81000 0x1000>, - <0x01c82000 0x1000>, + <0x01c82000 0x2000>, <0x01c84000 0x2000>, <0x01c86000 0x2000>; interrupt-controller; diff --git a/arch/arm/boot/dts/tegra114.dtsi b/arch/arm/boot/dts/tegra114.dtsi index fdc559a..9cc8baa 100644 --- a/arch/arm/boot/dts/tegra114.dtsi +++ b/arch/arm/boot/dts/tegra114.dtsi @@ -131,7 +131,7 @@ #interrupt-cells = <3>; interrupt-controller; reg = <0x50041000 0x1000>, - <0x50042000 0x1000>, + <0x50042000 0x2000>, <0x50044000 0x2000>, <0x50046000 0x2000>; interrupts = <GIC_PPI 9 diff --git a/arch/arm/boot/dts/tegra124.dtsi b/arch/arm/boot/dts/tegra124.dtsi index 6e6bc4e..6f988ee 100644 --- a/arch/arm/boot/dts/tegra124.dtsi +++ b/arch/arm/boot/dts/tegra124.dtsi @@ -95,7 +95,7 @@ #interrupt-cells = <3>; interrupt-controller; reg = <0x0 0x50041000 0x0 0x1000>, - <0x0 0x50042000 0x0 0x1000>, + <0x0 0x50042000 0x0 0x2000>, <0x0 0x50044000 0x0 0x2000>, <0x0 0x50046000 0x0 0x2000>; interrupts = <GIC_PPI 9 diff --git a/arch/arm/boot/dts/vexpress-v2p-ca15-tc1.dts b/arch/arm/boot/dts/vexpress-v2p-ca15-tc1.dts index 9420053..f0ec2be 100644 --- a/arch/arm/boot/dts/vexpress-v2p-ca15-tc1.dts +++ b/arch/arm/boot/dts/vexpress-v2p-ca15-tc1.dts @@ -81,7 +81,7 @@ #address-cells = <0>; interrupt-controller; reg = <0 0x2c001000 0 0x1000>, - <0 0x2c002000 0 0x1000>, + <0 0x2c002000 0 0x2000>, <0 0x2c004000 0 0x2000>, <0 0x2c006000 0 0x2000>; interrupts = <1 9 0xf04>; diff --git a/arch/arm/boot/dts/vexpress-v2p-ca15_a7.dts b/arch/arm/boot/dts/vexpress-v2p-ca15_a7.dts index a25c262..65dfa2a 100644 --- a/arch/arm/boot/dts/vexpress-v2p-ca15_a7.dts +++ b/arch/arm/boot/dts/vexpress-v2p-ca15_a7.dts @@ -103,7 +103,7 @@ #address-cells = <0>; interrupt-controller; reg = <0 0x2c001000 0 0x1000>, - <0 0x2c002000 0 0x1000>, + <0 0x2c002000 0 0x2000>, <0 0x2c004000 0 0x2000>, <0 0x2c006000 0 0x2000>; interrupts = <1 9 0xf04>; diff --git a/arch/arm64/boot/dts/apm-storm.dtsi b/arch/arm64/boot/dts/apm-storm.dtsi index 40aa96c..b1009b0 100644 --- a/arch/arm64/boot/dts/apm-storm.dtsi +++ b/arch/arm64/boot/dts/apm-storm.dtsi @@ -82,7 +82,7 @@ #interrupt-cells = <3>; interrupt-controller; reg = <0x0 0x78010000 0x0 0x1000>, /* GIC Dist */ - <0x0 0x78020000 0x0 0x1000>, /* GIC CPU */ + <0x0 0x78020000 0x0 0x2000>, /* GIC CPU */ <0x0 0x78040000 0x0 0x2000>, /* GIC VCPU Control */ <0x0 0x78060000 0x0 0x2000>; /* GIC VCPU */ interrupts = <1 9 0xf04>; /* GIC Maintenence IRQ */ diff --git a/arch/arm64/boot/dts/foundation-v8.dts b/arch/arm64/boot/dts/foundation-v8.dts index 4a06090..16f8233 100644 --- a/arch/arm64/boot/dts/foundation-v8.dts +++ b/arch/arm64/boot/dts/foundation-v8.dts @@ -70,7 +70,7 @@ #address-cells = <0>; interrupt-controller; reg = <0x0 0x2c001000 0 0x1000>, - <0x0 0x2c002000 0 0x1000>, + <0x0 0x2c002000 0 0x2000>, <0x0 0x2c004000 0 0x2000>, <0x0 0x2c006000 0 0x2000>; interrupts = <1 9 0xf04>; diff --git a/arch/arm64/boot/dts/rtsm_ve-aemv8a.dts b/arch/arm64/boot/dts/rtsm_ve-aemv8a.dts index 572005e..0d271ce 100644 --- a/arch/arm64/boot/dts/rtsm_ve-aemv8a.dts +++ b/arch/arm64/boot/dts/rtsm_ve-aemv8a.dts @@ -73,7 +73,7 @@ #address-cells = <0>; interrupt-controller; reg = <0x0 0x2c001000 0 0x1000>, - <0x0 0x2c002000 0 0x1000>, + <0x0 0x2c002000 0 0x2000>, <0x0 0x2c004000 0 0x2000>, <0x0 0x2c006000 0 0x2000>; interrupts = <1 9 0xf04>;
All the Cortex-{A7,A15} implementations are using a GICv2. Same for the current arm64 platforms. Turns out that most of these platforms have described their GIC CPU interface size as being 4kB. while it is actually 8kB (the GICC_DIR register lives at offset 0x1000). This was found when converting the GIC driver to use EOImode==1 on GICv2-based systems. It uses the GICC_DIR register, and the result is a very early firework... Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> --- arch/arm/boot/dts/axm55xx.dtsi | 2 +- arch/arm/boot/dts/dra7.dtsi | 2 +- arch/arm/boot/dts/ecx-2000.dts | 2 +- arch/arm/boot/dts/exynos3250.dtsi | 2 +- arch/arm/boot/dts/exynos5.dtsi | 2 +- arch/arm/boot/dts/exynos5260.dtsi | 2 +- arch/arm/boot/dts/exynos5410.dtsi | 2 +- arch/arm/boot/dts/exynos5440.dtsi | 2 +- arch/arm/boot/dts/omap5.dtsi | 2 +- arch/arm/boot/dts/r8a73a4.dtsi | 2 +- arch/arm/boot/dts/r8a7790.dtsi | 2 +- arch/arm/boot/dts/r8a7791.dtsi | 2 +- arch/arm/boot/dts/sun6i-a31.dtsi | 2 +- arch/arm/boot/dts/sun7i-a20.dtsi | 2 +- arch/arm/boot/dts/tegra114.dtsi | 2 +- arch/arm/boot/dts/tegra124.dtsi | 2 +- arch/arm/boot/dts/vexpress-v2p-ca15-tc1.dts | 2 +- arch/arm/boot/dts/vexpress-v2p-ca15_a7.dts | 2 +- arch/arm64/boot/dts/apm-storm.dtsi | 2 +- arch/arm64/boot/dts/foundation-v8.dts | 2 +- arch/arm64/boot/dts/rtsm_ve-aemv8a.dts | 2 +- 21 files changed, 21 insertions(+), 21 deletions(-)