| Message ID | 1458676378-24377-1-git-send-email-m-karicheri2@ti.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
Hi Murali,
[auto build test ERROR on next-20160322]
url: https://github.com/0day-ci/linux/commits/Murali-Karicheri/PCI-keystone-add-pci-error-irq-handler/20160323-035516
config: arm-multi_v7_defconfig (attached as .config)
reproduce:
wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
make.cross ARCH=arm
All errors (new ones prefixed by >>):
drivers/pci/host/pci-keystone.c: In function 'ks_pcie_probe':
>> drivers/pci/host/pci-keystone.c:410:16: error: 'node' undeclared (first use in this function)
ks_pcie->np = node;
^
drivers/pci/host/pci-keystone.c:410:16: note: each undeclared identifier is reported only once for each function it appears in
vim +/node +410 drivers/pci/host/pci-keystone.c
404 return PTR_ERR(reg_p);
405 ks_pcie->device_id = readl(reg_p) >> 16;
406 devm_iounmap(dev, reg_p);
407 devm_release_mem_region(dev, res->start, resource_size(res));
408
409 pp->dev = dev;
> 410 ks_pcie->np = node;
411 platform_set_drvdata(pdev, ks_pcie);
412 ks_pcie->clk = devm_clk_get(dev, "pcie");
413 if (IS_ERR(ks_pcie->clk)) {
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
On Tue, Mar 22, 2016 at 03:52:57PM -0400, Murali Karicheri wrote: > Keystone PCI hardware generates error interrupts at RC using platform > irq instead of standard msi/legacy irq. Add a simple error handler that > logs the fatal interrupt status to the console. > > Signed-off-by: Murali Karicheri <m-karicheri2@ti.com> > Cc: Rob Herring <robh+dt@kernel.org> > Cc: Pawel Moll <pawel.moll@arm.com> > Cc: Mark Rutland <mark.rutland@arm.com> > Cc: Ian Campbell <ijc+devicetree@hellion.org.uk> > Cc: Kumar Gala <galak@codeaurora.org> > Cc: Bjorn Helgaas <bhelgaas@google.com> > --- > .../devicetree/bindings/pci/pci-keystone.txt | 1 + Acked-by: Rob Herring <robh@kernel.org> > drivers/pci/host/pci-keystone-dw.c | 46 ++++++++++++++++++++++ > drivers/pci/host/pci-keystone.c | 32 +++++++++++++++ > drivers/pci/host/pci-keystone.h | 6 +++ > 4 files changed, 85 insertions(+)
On 03/22/2016 06:23 PM, kbuild test robot wrote: > Hi Murali, > > [auto build test ERROR on next-20160322] > > url: https://github.com/0day-ci/linux/commits/Murali-Karicheri/PCI-keystone-add-pci-error-irq-handler/20160323-035516 > config: arm-multi_v7_defconfig (attached as .config) > reproduce: > wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross > chmod +x ~/bin/make.cross > # save the attached .config to linux build tree > make.cross ARCH=arm > > All errors (new ones prefixed by >>): > > drivers/pci/host/pci-keystone.c: In function 'ks_pcie_probe': >>> drivers/pci/host/pci-keystone.c:410:16: error: 'node' undeclared (first use in this function) > ks_pcie->np = node; > ^ > drivers/pci/host/pci-keystone.c:410:16: note: each undeclared identifier is reported only once for each function it appears in > > vim +/node +410 drivers/pci/host/pci-keystone.c > > 404 return PTR_ERR(reg_p); > 405 ks_pcie->device_id = readl(reg_p) >> 16; > 406 devm_iounmap(dev, reg_p); > 407 devm_release_mem_region(dev, res->start, resource_size(res)); > 408 > 409 pp->dev = dev; > > 410 ks_pcie->np = node; > 411 platform_set_drvdata(pdev, ks_pcie); > 412 ks_pcie->clk = devm_clk_get(dev, "pcie"); > 413 if (IS_ERR(ks_pcie->clk)) { > > --- > 0-DAY kernel test infrastructure Open Source Technology Center > https://lists.01.org/pipermail/kbuild-all Intel Corporation > I don't anything obvious to cause this failure. It builds from arm-pci with these patches applied and I have tried multi_v7_defconfig for arm as well. I will follow the instructions here and check if I can reproduce this and post a updated a patch.
On 03/22/2016 03:52 PM, Murali Karicheri wrote: > Keystone PCI hardware generates error interrupts at RC using platform > irq instead of standard msi/legacy irq. Add a simple error handler that > logs the fatal interrupt status to the console. > > Signed-off-by: Murali Karicheri <m-karicheri2@ti.com> > Cc: Rob Herring <robh+dt@kernel.org> > Cc: Pawel Moll <pawel.moll@arm.com> > Cc: Mark Rutland <mark.rutland@arm.com> > Cc: Ian Campbell <ijc+devicetree@hellion.org.uk> > Cc: Kumar Gala <galak@codeaurora.org> > Cc: Bjorn Helgaas <bhelgaas@google.com> > --- > .../devicetree/bindings/pci/pci-keystone.txt | 1 + > drivers/pci/host/pci-keystone-dw.c | 46 ++++++++++++++++++++++ > drivers/pci/host/pci-keystone.c | 32 +++++++++++++++ > drivers/pci/host/pci-keystone.h | 6 +++ > 4 files changed, 85 insertions(+) > > diff --git a/Documentation/devicetree/bindings/pci/pci-keystone.txt b/Documentation/devicetree/bindings/pci/pci-keystone.txt > index 54eae29..d08a4d5 100644 > --- a/Documentation/devicetree/bindings/pci/pci-keystone.txt > +++ b/Documentation/devicetree/bindings/pci/pci-keystone.txt > @@ -56,6 +56,7 @@ Optional properties:- > phy-names: name of the Generic Keystine SerDes phy for PCI > - If boot loader already does PCI link establishment, then phys and > phy-names shouldn't be present. > + interrupts: platform interrupt for error interrupts. > > Designware DT Properties not applicable for Keystone PCI > > diff --git a/drivers/pci/host/pci-keystone-dw.c b/drivers/pci/host/pci-keystone-dw.c > index ed34c95..524901d 100644 > --- a/drivers/pci/host/pci-keystone-dw.c > +++ b/drivers/pci/host/pci-keystone-dw.c > @@ -53,6 +53,29 @@ > #define IRQ_STATUS 0x184 > #define MSI_IRQ_OFFSET 4 > > +/* > + * error IRQ bits. Enable following errors > + * - ERR_AER - ECRC error - BIT(5) > + * - ERR_AXI - AXI tag lookup fatal error BIT(4) > + * - ERR_CORR - Correctable error BIT(3) > + * - ERR_NONFATAL - Non fatal error BIT(2) > + * - ERR_FATAL - Fatal error BIT(1) > + * - ERR_SYS - System error (fatal, nonfatal or correctable error) > + */ > +#define ERR_AER BIT(5) > +#define ERR_AXI BIT(4) > +#define ERR_CORR BIT(3) > +#define ERR_NONFATAL BIT(2) > +#define ERR_FATAL BIT(1) > +#define ERR_SYS BIT(0) > +#define ERR_IRQ_ALL (ERR_AER | ERR_AXI | ERR_CORR | \ > + ERR_NONFATAL | ERR_FATAL | ERR_SYS) > +#define ERR_FATAL_IRQ (ERR_FATAL | ERR_AXI) > +#define ERR_IRQ_STATUS_RAW 0x1c0 > +#define ERR_IRQ_STATUS 0x1c4 > +#define ERR_IRQ_ENABLE_SET 0x1c8 > +#define ERR_IRQ_ENABLE_CLR 0x1cc > + > /* Config space registers */ > #define DEBUG0 0x728 > > @@ -248,6 +271,29 @@ void ks_dw_pcie_handle_legacy_irq(struct keystone_pcie *ks_pcie, int offset) > writel(offset, ks_pcie->va_app_base + IRQ_EOI); > } > > +void ks_dw_pcie_enable_error_irq(void __iomem *reg_base) > +{ > + writel(ERR_IRQ_ALL, reg_base + ERR_IRQ_ENABLE_SET); > +} > + > +bool ks_dw_pcie_handle_error_irq(struct device *dev, void __iomem *reg_base) > +{ > + u32 status; > + bool ret = false; > + > + status = readl(reg_base + ERR_IRQ_STATUS_RAW) & ERR_IRQ_ALL; > + if (status) { > + /* The PCIESS interrupt status buts are "write 1 to clear" */ > + if (status & ERR_FATAL_IRQ) > + dev_err(dev, "PCIE fatal error detected\n"); > + > + /* ack the irq event. */ > + writel(status, reg_base + ERR_IRQ_STATUS); > + ret = true; > + } > + return ret; > +} > + > static void ks_dw_pcie_ack_legacy_irq(struct irq_data *d) > { > } > diff --git a/drivers/pci/host/pci-keystone.c b/drivers/pci/host/pci-keystone.c > index b71f55b..299f2f0 100644 > --- a/drivers/pci/host/pci-keystone.c > +++ b/drivers/pci/host/pci-keystone.c > @@ -15,6 +15,7 @@ > #include <linux/irqchip/chained_irq.h> > #include <linux/clk.h> > #include <linux/delay.h> > +#include <linux/interrupt.h> > #include <linux/irqdomain.h> > #include <linux/module.h> > #include <linux/msi.h> > @@ -226,6 +227,10 @@ static void ks_pcie_setup_interrupts(struct keystone_pcie *ks_pcie) > ks_pcie); > } > } > + > + /* enable error interrupt */ > + if (ks_pcie->error_irq > 0) > + ks_dw_pcie_enable_error_irq(ks_pcie->va_app_base); > } > > /* > @@ -289,6 +294,16 @@ static struct pcie_host_ops keystone_pcie_host_ops = { > .scan_bus = ks_dw_pcie_v3_65_scan_bus, > }; > > +static irqreturn_t pcie_err_irq_handler(int irq, void *priv) > +{ > + struct keystone_pcie *ks_pcie = priv; > + > + if (ks_dw_pcie_handle_error_irq(ks_pcie->pp.dev, ks_pcie->va_app_base)) > + return IRQ_HANDLED; > + > + return IRQ_NONE; > +} > + > static int __init ks_add_pcie_port(struct keystone_pcie *ks_pcie, > struct platform_device *pdev) > { > @@ -309,6 +324,22 @@ static int __init ks_add_pcie_port(struct keystone_pcie *ks_pcie, > return ret; > } > > + /* > + * index 0 is the platform interrupt for error interrupt > + * from RC. As this is optional to define this, we will > + * just print a warning > + */ > + ks_pcie->error_irq = irq_of_parse_and_map(ks_pcie->np, 0); > + if (ks_pcie->error_irq <= 0) > + dev_warn(&pdev->dev, "No error irq defined\n"); > + else { > + if (request_irq(ks_pcie->error_irq, pcie_err_irq_handler, > + IRQF_SHARED, "pcie-error-irq", ks_pcie) < 0) { > + dev_err(&pdev->dev, "failed to request error irq\n"); > + return ret; > + } > + } > + > pp->root_bus_nr = -1; > pp->ops = &keystone_pcie_host_ops; > ret = ks_dw_pcie_host_init(ks_pcie, ks_pcie->msi_intc_np); > @@ -376,6 +407,7 @@ static int __init ks_pcie_probe(struct platform_device *pdev) > devm_release_mem_region(dev, res->start, resource_size(res)); > > pp->dev = dev; > + ks_pcie->np = node; > platform_set_drvdata(pdev, ks_pcie); > ks_pcie->clk = devm_clk_get(dev, "pcie"); > if (IS_ERR(ks_pcie->clk)) { > diff --git a/drivers/pci/host/pci-keystone.h b/drivers/pci/host/pci-keystone.h > index f0944e8..2daa215 100644 > --- a/drivers/pci/host/pci-keystone.h > +++ b/drivers/pci/host/pci-keystone.h > @@ -29,6 +29,10 @@ struct keystone_pcie { > int msi_host_irqs[MAX_MSI_HOST_IRQS]; > struct device_node *msi_intc_np; > struct irq_domain *legacy_irq_domain; > + struct device_node *np; > + > + /* error interrupt */ > + int error_irq; > > /* Application register space */ > void __iomem *va_app_base; > @@ -42,6 +46,8 @@ phys_addr_t ks_dw_pcie_get_msi_addr(struct pcie_port *pp); > /* Keystone specific PCI controller APIs */ > void ks_dw_pcie_enable_legacy_irqs(struct keystone_pcie *ks_pcie); > void ks_dw_pcie_handle_legacy_irq(struct keystone_pcie *ks_pcie, int offset); > +void ks_dw_pcie_enable_error_irq(void __iomem *reg_base); > +bool ks_dw_pcie_handle_error_irq(struct device *dev, void __iomem *reg_base); > int ks_dw_pcie_host_init(struct keystone_pcie *ks_pcie, > struct device_node *msi_intc_np); > int ks_dw_pcie_wr_other_conf(struct pcie_port *pp, struct pci_bus *bus, > Bjorn, Will you be applying this to your PCI next branch?
On 03/22/2016 06:23 PM, kbuild test robot wrote: > Hi Murali, > > [auto build test ERROR on next-20160322] > > url: https://github.com/0day-ci/linux/commits/Murali-Karicheri/PCI-keystone-add-pci-error-irq-handler/20160323-035516 > config: arm-multi_v7_defconfig (attached as .config) > reproduce: > wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross > chmod +x ~/bin/make.cross > # save the attached .config to linux build tree > make.cross ARCH=arm > > All errors (new ones prefixed by >>): > > drivers/pci/host/pci-keystone.c: In function 'ks_pcie_probe': >>> drivers/pci/host/pci-keystone.c:410:16: error: 'node' undeclared (first use in this function) > ks_pcie->np = node; > ^ > drivers/pci/host/pci-keystone.c:410:16: note: each undeclared identifier is reported only once for each function it appears in > > vim +/node +410 drivers/pci/host/pci-keystone.c > > 404 return PTR_ERR(reg_p); > 405 ks_pcie->device_id = readl(reg_p) >> 16; > 406 devm_iounmap(dev, reg_p); > 407 devm_release_mem_region(dev, res->start, resource_size(res)); > 408 > 409 pp->dev = dev; > > 410 ks_pcie->np = node; > 411 platform_set_drvdata(pdev, ks_pcie); > 412 ks_pcie->clk = devm_clk_get(dev, "pcie"); > 413 if (IS_ERR(ks_pcie->clk)) { > > --- > 0-DAY kernel test infrastructure Open Source Technology Center > https://lists.01.org/pipermail/kbuild-all Intel Corporation > I had posted v1 of this patch which is still waiting to be applied. Wondering who is going to pick this up?
diff --git a/Documentation/devicetree/bindings/pci/pci-keystone.txt b/Documentation/devicetree/bindings/pci/pci-keystone.txt index 54eae29..d08a4d5 100644 --- a/Documentation/devicetree/bindings/pci/pci-keystone.txt +++ b/Documentation/devicetree/bindings/pci/pci-keystone.txt @@ -56,6 +56,7 @@ Optional properties:- phy-names: name of the Generic Keystine SerDes phy for PCI - If boot loader already does PCI link establishment, then phys and phy-names shouldn't be present. + interrupts: platform interrupt for error interrupts. Designware DT Properties not applicable for Keystone PCI diff --git a/drivers/pci/host/pci-keystone-dw.c b/drivers/pci/host/pci-keystone-dw.c index ed34c95..524901d 100644 --- a/drivers/pci/host/pci-keystone-dw.c +++ b/drivers/pci/host/pci-keystone-dw.c @@ -53,6 +53,29 @@ #define IRQ_STATUS 0x184 #define MSI_IRQ_OFFSET 4 +/* + * error IRQ bits. Enable following errors + * - ERR_AER - ECRC error - BIT(5) + * - ERR_AXI - AXI tag lookup fatal error BIT(4) + * - ERR_CORR - Correctable error BIT(3) + * - ERR_NONFATAL - Non fatal error BIT(2) + * - ERR_FATAL - Fatal error BIT(1) + * - ERR_SYS - System error (fatal, nonfatal or correctable error) + */ +#define ERR_AER BIT(5) +#define ERR_AXI BIT(4) +#define ERR_CORR BIT(3) +#define ERR_NONFATAL BIT(2) +#define ERR_FATAL BIT(1) +#define ERR_SYS BIT(0) +#define ERR_IRQ_ALL (ERR_AER | ERR_AXI | ERR_CORR | \ + ERR_NONFATAL | ERR_FATAL | ERR_SYS) +#define ERR_FATAL_IRQ (ERR_FATAL | ERR_AXI) +#define ERR_IRQ_STATUS_RAW 0x1c0 +#define ERR_IRQ_STATUS 0x1c4 +#define ERR_IRQ_ENABLE_SET 0x1c8 +#define ERR_IRQ_ENABLE_CLR 0x1cc + /* Config space registers */ #define DEBUG0 0x728 @@ -248,6 +271,29 @@ void ks_dw_pcie_handle_legacy_irq(struct keystone_pcie *ks_pcie, int offset) writel(offset, ks_pcie->va_app_base + IRQ_EOI); } +void ks_dw_pcie_enable_error_irq(void __iomem *reg_base) +{ + writel(ERR_IRQ_ALL, reg_base + ERR_IRQ_ENABLE_SET); +} + +bool ks_dw_pcie_handle_error_irq(struct device *dev, void __iomem *reg_base) +{ + u32 status; + bool ret = false; + + status = readl(reg_base + ERR_IRQ_STATUS_RAW) & ERR_IRQ_ALL; + if (status) { + /* The PCIESS interrupt status buts are "write 1 to clear" */ + if (status & ERR_FATAL_IRQ) + dev_err(dev, "PCIE fatal error detected\n"); + + /* ack the irq event. */ + writel(status, reg_base + ERR_IRQ_STATUS); + ret = true; + } + return ret; +} + static void ks_dw_pcie_ack_legacy_irq(struct irq_data *d) { } diff --git a/drivers/pci/host/pci-keystone.c b/drivers/pci/host/pci-keystone.c index b71f55b..299f2f0 100644 --- a/drivers/pci/host/pci-keystone.c +++ b/drivers/pci/host/pci-keystone.c @@ -15,6 +15,7 @@ #include <linux/irqchip/chained_irq.h> #include <linux/clk.h> #include <linux/delay.h> +#include <linux/interrupt.h> #include <linux/irqdomain.h> #include <linux/module.h> #include <linux/msi.h> @@ -226,6 +227,10 @@ static void ks_pcie_setup_interrupts(struct keystone_pcie *ks_pcie) ks_pcie); } } + + /* enable error interrupt */ + if (ks_pcie->error_irq > 0) + ks_dw_pcie_enable_error_irq(ks_pcie->va_app_base); } /* @@ -289,6 +294,16 @@ static struct pcie_host_ops keystone_pcie_host_ops = { .scan_bus = ks_dw_pcie_v3_65_scan_bus, }; +static irqreturn_t pcie_err_irq_handler(int irq, void *priv) +{ + struct keystone_pcie *ks_pcie = priv; + + if (ks_dw_pcie_handle_error_irq(ks_pcie->pp.dev, ks_pcie->va_app_base)) + return IRQ_HANDLED; + + return IRQ_NONE; +} + static int __init ks_add_pcie_port(struct keystone_pcie *ks_pcie, struct platform_device *pdev) { @@ -309,6 +324,22 @@ static int __init ks_add_pcie_port(struct keystone_pcie *ks_pcie, return ret; } + /* + * index 0 is the platform interrupt for error interrupt + * from RC. As this is optional to define this, we will + * just print a warning + */ + ks_pcie->error_irq = irq_of_parse_and_map(ks_pcie->np, 0); + if (ks_pcie->error_irq <= 0) + dev_warn(&pdev->dev, "No error irq defined\n"); + else { + if (request_irq(ks_pcie->error_irq, pcie_err_irq_handler, + IRQF_SHARED, "pcie-error-irq", ks_pcie) < 0) { + dev_err(&pdev->dev, "failed to request error irq\n"); + return ret; + } + } + pp->root_bus_nr = -1; pp->ops = &keystone_pcie_host_ops; ret = ks_dw_pcie_host_init(ks_pcie, ks_pcie->msi_intc_np); @@ -376,6 +407,7 @@ static int __init ks_pcie_probe(struct platform_device *pdev) devm_release_mem_region(dev, res->start, resource_size(res)); pp->dev = dev; + ks_pcie->np = node; platform_set_drvdata(pdev, ks_pcie); ks_pcie->clk = devm_clk_get(dev, "pcie"); if (IS_ERR(ks_pcie->clk)) { diff --git a/drivers/pci/host/pci-keystone.h b/drivers/pci/host/pci-keystone.h index f0944e8..2daa215 100644 --- a/drivers/pci/host/pci-keystone.h +++ b/drivers/pci/host/pci-keystone.h @@ -29,6 +29,10 @@ struct keystone_pcie { int msi_host_irqs[MAX_MSI_HOST_IRQS]; struct device_node *msi_intc_np; struct irq_domain *legacy_irq_domain; + struct device_node *np; + + /* error interrupt */ + int error_irq; /* Application register space */ void __iomem *va_app_base; @@ -42,6 +46,8 @@ phys_addr_t ks_dw_pcie_get_msi_addr(struct pcie_port *pp); /* Keystone specific PCI controller APIs */ void ks_dw_pcie_enable_legacy_irqs(struct keystone_pcie *ks_pcie); void ks_dw_pcie_handle_legacy_irq(struct keystone_pcie *ks_pcie, int offset); +void ks_dw_pcie_enable_error_irq(void __iomem *reg_base); +bool ks_dw_pcie_handle_error_irq(struct device *dev, void __iomem *reg_base); int ks_dw_pcie_host_init(struct keystone_pcie *ks_pcie, struct device_node *msi_intc_np); int ks_dw_pcie_wr_other_conf(struct pcie_port *pp, struct pci_bus *bus,
Keystone PCI hardware generates error interrupts at RC using platform irq instead of standard msi/legacy irq. Add a simple error handler that logs the fatal interrupt status to the console. Signed-off-by: Murali Karicheri <m-karicheri2@ti.com> Cc: Rob Herring <robh+dt@kernel.org> Cc: Pawel Moll <pawel.moll@arm.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Ian Campbell <ijc+devicetree@hellion.org.uk> Cc: Kumar Gala <galak@codeaurora.org> Cc: Bjorn Helgaas <bhelgaas@google.com> --- .../devicetree/bindings/pci/pci-keystone.txt | 1 + drivers/pci/host/pci-keystone-dw.c | 46 ++++++++++++++++++++++ drivers/pci/host/pci-keystone.c | 32 +++++++++++++++ drivers/pci/host/pci-keystone.h | 6 +++ 4 files changed, 85 insertions(+)