From: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
To: Bjorn Helgaas <bhelgaas@google.com>,
Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
Jingoo Han <jingoohan1@gmail.com>,
Gustavo Pimentel <gustavo.pimentel@synopsys.com>,
Rob Herring <robh+dt@kernel.org>,
Masahiro Yamada <yamada.masahiro@socionext.com>,
Marc Zyngier <maz@kernel.org>
Cc: linux-pci@vger.kernel.org, devicetree@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org,
Masami Hiramatsu <masami.hiramatsu@linaro.org>,
Jassi Brar <jaswinder.singh@linaro.org>,
Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Subject: [PATCH v4 1/6] PCI: dwc: Add msi_host_isr() callback
Date: Fri, 5 Jun 2020 18:44:31 +0900 [thread overview]
Message-ID: <1591350276-15816-2-git-send-email-hayashi.kunihiko@socionext.com> (raw)
In-Reply-To: <1591350276-15816-1-git-send-email-hayashi.kunihiko@socionext.com>
This adds msi_host_isr() callback function support to describe
SoC-dependent service triggered by MSI.
For example, when AER interrupt is triggered by MSI, the callback function
reads SoC-dependent registers and detects that the interrupt is from AER,
and invoke AER interrupts related to MSI.
Cc: Marc Zyngier <maz@kernel.org>
Cc: Jingoo Han <jingoohan1@gmail.com>
Cc: Gustavo Pimentel <gustavo.pimentel@synopsys.com>
Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
---
drivers/pci/controller/dwc/pcie-designware-host.c | 3 +++
drivers/pci/controller/dwc/pcie-designware.h | 1 +
2 files changed, 4 insertions(+)
diff --git a/drivers/pci/controller/dwc/pcie-designware-host.c b/drivers/pci/controller/dwc/pcie-designware-host.c
index 0a4a5aa..026edb1 100644
--- a/drivers/pci/controller/dwc/pcie-designware-host.c
+++ b/drivers/pci/controller/dwc/pcie-designware-host.c
@@ -83,6 +83,9 @@ irqreturn_t dw_handle_msi_irq(struct pcie_port *pp)
u32 status, num_ctrls;
irqreturn_t ret = IRQ_NONE;
+ if (pp->ops->msi_host_isr)
+ pp->ops->msi_host_isr(pp);
+
num_ctrls = pp->num_vectors / MAX_MSI_IRQS_PER_CTRL;
for (i = 0; i < num_ctrls; i++) {
diff --git a/drivers/pci/controller/dwc/pcie-designware.h b/drivers/pci/controller/dwc/pcie-designware.h
index 656e00f..e741967 100644
--- a/drivers/pci/controller/dwc/pcie-designware.h
+++ b/drivers/pci/controller/dwc/pcie-designware.h
@@ -170,6 +170,7 @@ struct dw_pcie_host_ops {
void (*scan_bus)(struct pcie_port *pp);
void (*set_num_vectors)(struct pcie_port *pp);
int (*msi_host_init)(struct pcie_port *pp);
+ void (*msi_host_isr)(struct pcie_port *pp);
};
struct pcie_port {
--
2.7.4
next prev parent reply other threads:[~2020-06-05 9:44 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-05 9:44 [PATCH v4 0/6] PCI: uniphier: Add features for UniPhier PCIe host controller Kunihiko Hayashi
2020-06-05 9:44 ` Kunihiko Hayashi [this message]
2020-06-05 11:44 ` [PATCH v4 1/6] PCI: dwc: Add msi_host_isr() callback Gustavo Pimentel
2020-06-05 9:44 ` [PATCH v4 2/6] PCI: uniphier: Add misc interrupt handler to invoke PME and AER Kunihiko Hayashi
2020-06-05 9:44 ` [PATCH v4 3/6] dt-bindings: PCI: uniphier: Add iATU register description Kunihiko Hayashi
2020-06-05 9:44 ` [PATCH v4 4/6] PCI: uniphier: Add iATU register support Kunihiko Hayashi
2020-06-05 9:44 ` [PATCH v4 5/6] PCI: uniphier: Add error message when failed to get phy Kunihiko Hayashi
2020-06-05 9:44 ` [PATCH v4 6/6] PCI: uniphier: Use devm_platform_ioremap_resource_byname() Kunihiko Hayashi
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