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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 v5 1/6] PCI: dwc: Add msi_host_isr() callback
Date: Thu, 18 Jun 2020 17:38:08 +0900	[thread overview]
Message-ID: <1592469493-1549-2-git-send-email-hayashi.kunihiko@socionext.com> (raw)
In-Reply-To: <1592469493-1549-1-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>
Acked-by: Gustavo Pimentel <gustavo.pimentel@synopsys.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


  reply	other threads:[~2020-06-18  8:38 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-18  8:38 [PATCH v5 0/6] PCI: uniphier: Add features for UniPhier PCIe host controller Kunihiko Hayashi
2020-06-18  8:38 ` Kunihiko Hayashi [this message]
2020-06-18  8:38 ` [PATCH v5 2/6] PCI: uniphier: Add misc interrupt handler to invoke PME and AER Kunihiko Hayashi
2020-06-27  9:48   ` Marc Zyngier
2020-06-29  9:49     ` Kunihiko Hayashi
2020-06-30 13:23       ` Marc Zyngier
2020-07-01  2:18         ` Kunihiko Hayashi
2020-07-10 16:14           ` Lorenzo Pieralisi
2020-07-14  9:27             ` Kunihiko Hayashi
2020-07-14 13:27   ` Lorenzo Pieralisi
2020-07-15 10:04     ` Kunihiko Hayashi
2020-08-07 10:12       ` Kunihiko Hayashi
2020-06-18  8:38 ` [PATCH v5 3/6] dt-bindings: PCI: uniphier: Add iATU register description Kunihiko Hayashi
2020-06-18  8:38 ` [PATCH v5 4/6] PCI: uniphier: Add iATU register support Kunihiko Hayashi
2020-06-18  8:38 ` [PATCH v5 5/6] PCI: uniphier: Add error message when failed to get phy Kunihiko Hayashi
2020-06-18  8:38 ` [PATCH v5 6/6] PCI: uniphier: Use devm_platform_ioremap_resource_byname() Kunihiko Hayashi
2020-07-10  0:54   ` Kunihiko Hayashi
2020-07-10 13:29     ` Lorenzo Pieralisi

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