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Message-Id: <76f6e6ce6021607cd0fdfd79fef7d2eb69d9f361.1750858083.git.namcao@linutronix.de>
Date: Thu, 26 Jun 2025 16:47:58 +0200
From: Nam Cao <namcao@...utronix.de>
To: Marc Zyngier <maz@...nel.org>,
Thomas Gleixner <tglx@...utronix.de>,
Lorenzo Pieralisi <lpieralisi@...nel.org>,
Krzysztof Wilczyński <kwilczynski@...nel.org>,
Manivannan Sadhasivam <mani@...nel.org>,
Rob Herring <robh@...nel.org>,
Bjorn Helgaas <bhelgaas@...gle.com>,
linux-pci@...r.kernel.org,
linux-kernel@...r.kernel.org,
Karthikeyan Mitran <m.karthikeyan@...iveil.co.in>,
Hou Zhiqiang <Zhiqiang.Hou@....com>,
Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
Pali Rohár <pali@...nel.org>,
"K . Y . Srinivasan" <kys@...rosoft.com>,
Haiyang Zhang <haiyangz@...rosoft.com>,
Wei Liu <wei.liu@...nel.org>,
Dexuan Cui <decui@...rosoft.com>,
Joyce Ooi <joyce.ooi@...el.com>,
Jim Quinlan <jim2101024@...il.com>,
Nicolas Saenz Julienne <nsaenz@...nel.org>,
Florian Fainelli <florian.fainelli@...adcom.com>,
Broadcom internal kernel review list <bcm-kernel-feedback-list@...adcom.com>,
Ray Jui <rjui@...adcom.com>,
Scott Branden <sbranden@...adcom.com>,
Ryder Lee <ryder.lee@...iatek.com>,
Jianjun Wang <jianjun.wang@...iatek.com>,
Marek Vasut <marek.vasut+renesas@...il.com>,
Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>,
Michal Simek <michal.simek@....com>,
Daire McNamara <daire.mcnamara@...rochip.com>,
Nirmal Patel <nirmal.patel@...ux.intel.com>,
Jonathan Derrick <jonathan.derrick@...ux.dev>,
Matthias Brugger <matthias.bgg@...il.com>,
AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
linux-arm-kernel@...ts.infradead.org,
linux-hyperv@...r.kernel.org,
linux-rpi-kernel@...ts.infradead.org,
linux-mediatek@...ts.infradead.org,
linux-renesas-soc@...r.kernel.org
Cc: Nam Cao <namcao@...utronix.de>
Subject: [PATCH 08/16] PCI: mediatek: Switch to msi_create_parent_irq_domain()
Move away from the legacy MSI domain setup, switch to use
msi_create_parent_irq_domain().
Signed-off-by: Nam Cao <namcao@...utronix.de>
---
Cc: Ryder Lee <ryder.lee@...iatek.com>
Cc: Jianjun Wang <jianjun.wang@...iatek.com>
Cc: Matthias Brugger <matthias.bgg@...il.com>
Cc: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
Cc: linux-mediatek@...ts.infradead.org
Cc: linux-arm-kernel@...ts.infradead.org
---
drivers/pci/controller/Kconfig | 1 +
drivers/pci/controller/pcie-mediatek.c | 46 ++++++++++++--------------
2 files changed, 23 insertions(+), 24 deletions(-)
diff --git a/drivers/pci/controller/Kconfig b/drivers/pci/controller/Kconfig
index ec32c343a751d..65289a171333c 100644
--- a/drivers/pci/controller/Kconfig
+++ b/drivers/pci/controller/Kconfig
@@ -195,6 +195,7 @@ config PCIE_MEDIATEK
depends on ARCH_AIROHA || ARCH_MEDIATEK || COMPILE_TEST
depends on OF
depends on PCI_MSI
+ select IRQ_MSI_LIB
help
Say Y here if you want to enable PCIe controller support on
MediaTek SoCs.
diff --git a/drivers/pci/controller/pcie-mediatek.c b/drivers/pci/controller/pcie-mediatek.c
index e1934aa06c8d5..3ac5d14dd543e 100644
--- a/drivers/pci/controller/pcie-mediatek.c
+++ b/drivers/pci/controller/pcie-mediatek.c
@@ -12,6 +12,7 @@
#include <linux/iopoll.h>
#include <linux/irq.h>
#include <linux/irqchip/chained_irq.h>
+#include <linux/irqchip/irq-msi-lib.h>
#include <linux/irqdomain.h>
#include <linux/kernel.h>
#include <linux/mfd/syscon.h>
@@ -180,7 +181,6 @@ struct mtk_pcie_soc {
* @irq: GIC irq
* @irq_domain: legacy INTx IRQ domain
* @inner_domain: inner IRQ domain
- * @msi_domain: MSI IRQ domain
* @lock: protect the msi_irq_in_use bitmap
* @msi_irq_in_use: bit map for assigned MSI IRQ
*/
@@ -200,7 +200,6 @@ struct mtk_pcie_port {
int irq;
struct irq_domain *irq_domain;
struct irq_domain *inner_domain;
- struct irq_domain *msi_domain;
struct mutex lock;
DECLARE_BITMAP(msi_irq_in_use, MTK_MSI_IRQS_NUM);
};
@@ -470,17 +469,20 @@ static const struct irq_domain_ops msi_domain_ops = {
.free = mtk_pcie_irq_domain_free,
};
-static struct irq_chip mtk_msi_irq_chip = {
- .name = "MTK PCIe MSI",
- .irq_ack = irq_chip_ack_parent,
- .irq_mask = pci_msi_mask_irq,
- .irq_unmask = pci_msi_unmask_irq,
-};
+#define MTK_MSI_FLAGS_REQUIRED (MSI_FLAG_USE_DEF_DOM_OPS | \
+ MSI_FLAG_USE_DEF_CHIP_OPS | \
+ MSI_FLAG_NO_AFFINITY)
+
+#define MTK_MSI_FLAGS_SUPPORTED (MSI_GENERIC_FLAGS_MASK | \
+ MSI_FLAG_PCI_MSIX)
-static struct msi_domain_info mtk_msi_domain_info = {
- .flags = MSI_FLAG_USE_DEF_DOM_OPS | MSI_FLAG_USE_DEF_CHIP_OPS |
- MSI_FLAG_NO_AFFINITY | MSI_FLAG_PCI_MSIX,
- .chip = &mtk_msi_irq_chip,
+static const struct msi_parent_ops mtk_msi_parent_ops = {
+ .required_flags = MTK_MSI_FLAGS_REQUIRED,
+ .supported_flags = MTK_MSI_FLAGS_SUPPORTED,
+ .bus_select_token = DOMAIN_BUS_PCI_MSI,
+ .chip_flags = MSI_CHIP_FLAG_SET_ACK,
+ .prefix = "MTK-",
+ .init_dev_msi_info = msi_lib_init_dev_msi_info,
};
static int mtk_pcie_allocate_msi_domains(struct mtk_pcie_port *port)
@@ -489,21 +491,19 @@ static int mtk_pcie_allocate_msi_domains(struct mtk_pcie_port *port)
mutex_init(&port->lock);
- port->inner_domain = irq_domain_create_linear(fwnode, MTK_MSI_IRQS_NUM,
- &msi_domain_ops, port);
+ struct irq_domain_info info = {
+ .fwnode = fwnode,
+ .ops = &msi_domain_ops,
+ .host_data = port,
+ .size = MTK_MSI_IRQS_NUM,
+ };
+
+ port->inner_domain = msi_create_parent_irq_domain(&info, &mtk_msi_parent_ops);
if (!port->inner_domain) {
dev_err(port->pcie->dev, "failed to create IRQ domain\n");
return -ENOMEM;
}
- port->msi_domain = pci_msi_create_irq_domain(fwnode, &mtk_msi_domain_info,
- port->inner_domain);
- if (!port->msi_domain) {
- dev_err(port->pcie->dev, "failed to create MSI domain\n");
- irq_domain_remove(port->inner_domain);
- return -ENOMEM;
- }
-
return 0;
}
@@ -532,8 +532,6 @@ static void mtk_pcie_irq_teardown(struct mtk_pcie *pcie)
irq_domain_remove(port->irq_domain);
if (IS_ENABLED(CONFIG_PCI_MSI)) {
- if (port->msi_domain)
- irq_domain_remove(port->msi_domain);
if (port->inner_domain)
irq_domain_remove(port->inner_domain);
}
--
2.39.5
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