diff mbox series

[v15,2/7] PCI: dwc: Convert msi_irq to the array

Message ID 20220620112015.1600380-3-dmitry.baryshkov@linaro.org
State New
Headers show
Series PCI: dwc: Fix higher MSI vectors handling | expand

Commit Message

Dmitry Baryshkov June 20, 2022, 11:20 a.m. UTC 
Qualcomm version of DWC PCIe controller supports more than 32 MSI
interrupts, but they are routed to separate interrupts in groups of 32
vectors. To support such configuration, change the msi_irq field into an
array. Let the DWC core handle all interrupts that were set in this
array.

Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Johan Hovold <johan+linaro@kernel.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
---
 drivers/pci/controller/dwc/pci-dra7xx.c       |  2 +-
 drivers/pci/controller/dwc/pci-exynos.c       |  2 +-
 .../pci/controller/dwc/pcie-designware-host.c | 32 ++++++++++++-------
 drivers/pci/controller/dwc/pcie-designware.h  |  2 +-
 drivers/pci/controller/dwc/pcie-keembay.c     |  2 +-
 drivers/pci/controller/dwc/pcie-spear13xx.c   |  2 +-
 drivers/pci/controller/dwc/pcie-tegra194.c    |  2 +-
 7 files changed, 26 insertions(+), 18 deletions(-)

Comments

Johan Hovold June 29, 2022, 2:23 p.m. UTC | #1 
On Mon, Jun 20, 2022 at 02:20:10PM +0300, Dmitry Baryshkov wrote:
> Qualcomm version of DWC PCIe controller supports more than 32 MSI
> interrupts, but they are routed to separate interrupts in groups of 32
> vectors. To support such configuration, change the msi_irq field into an
> array. Let the DWC core handle all interrupts that were set in this
> array.
> 
> Reviewed-by: Rob Herring <robh@kernel.org>
> Reviewed-by: Johan Hovold <johan+linaro@kernel.org>
> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

Tested-by: Johan Hovold <johan+linaro@kernel.org>
diff mbox series

Patch

diff --git a/drivers/pci/controller/dwc/pci-dra7xx.c b/drivers/pci/controller/dwc/pci-dra7xx.c
index dfcdeb432dc8..0919c96dcdbd 100644
--- a/drivers/pci/controller/dwc/pci-dra7xx.c
+++ b/drivers/pci/controller/dwc/pci-dra7xx.c
@@ -483,7 +483,7 @@  static int dra7xx_add_pcie_port(struct dra7xx_pcie *dra7xx,
 		return pp->irq;
 
 	/* MSI IRQ is muxed */
-	pp->msi_irq = -ENODEV;
+	pp->msi_irq[0] = -ENODEV;
 
 	ret = dra7xx_pcie_init_irq_domain(pp);
 	if (ret < 0)
diff --git a/drivers/pci/controller/dwc/pci-exynos.c b/drivers/pci/controller/dwc/pci-exynos.c
index 467c8d1cd7e4..4f2010bd9cd7 100644
--- a/drivers/pci/controller/dwc/pci-exynos.c
+++ b/drivers/pci/controller/dwc/pci-exynos.c
@@ -292,7 +292,7 @@  static int exynos_add_pcie_port(struct exynos_pcie *ep,
 	}
 
 	pp->ops = &exynos_pcie_host_ops;
-	pp->msi_irq = -ENODEV;
+	pp->msi_irq[0] = -ENODEV;
 
 	ret = dw_pcie_host_init(pp);
 	if (ret) {
diff --git a/drivers/pci/controller/dwc/pcie-designware-host.c b/drivers/pci/controller/dwc/pcie-designware-host.c
index af91fe69f542..96b6196f870b 100644
--- a/drivers/pci/controller/dwc/pcie-designware-host.c
+++ b/drivers/pci/controller/dwc/pcie-designware-host.c
@@ -257,8 +257,12 @@  int dw_pcie_allocate_domains(struct pcie_port *pp)
 
 static void dw_pcie_free_msi(struct pcie_port *pp)
 {
-	if (pp->msi_irq > 0)
-		irq_set_chained_handler_and_data(pp->msi_irq, NULL, NULL);
+	u32 ctrl;
+
+	for (ctrl = 0; ctrl < MAX_MSI_CTRLS; ctrl++) {
+		if (pp->msi_irq[ctrl] > 0)
+			irq_set_chained_handler_and_data(pp->msi_irq[ctrl], NULL, NULL);
+	}
 
 	irq_domain_remove(pp->msi_domain);
 	irq_domain_remove(pp->irq_domain);
@@ -368,13 +372,15 @@  int dw_pcie_host_init(struct pcie_port *pp)
 			for (ctrl = 0; ctrl < num_ctrls; ctrl++)
 				pp->irq_mask[ctrl] = ~0;
 
-			if (!pp->msi_irq) {
-				pp->msi_irq = platform_get_irq_byname_optional(pdev, "msi");
-				if (pp->msi_irq < 0) {
-					pp->msi_irq = platform_get_irq(pdev, 0);
-					if (pp->msi_irq < 0)
-						return pp->msi_irq;
+			if (!pp->msi_irq[0]) {
+				int irq = platform_get_irq_byname_optional(pdev, "msi");
+
+				if (irq < 0) {
+					irq = platform_get_irq(pdev, 0);
+					if (irq < 0)
+						return irq;
 				}
+				pp->msi_irq[0] = irq;
 			}
 
 			pp->msi_irq_chip = &dw_pci_msi_bottom_irq_chip;
@@ -383,10 +389,12 @@  int dw_pcie_host_init(struct pcie_port *pp)
 			if (ret)
 				return ret;
 
-			if (pp->msi_irq > 0)
-				irq_set_chained_handler_and_data(pp->msi_irq,
-							    dw_chained_msi_isr,
-							    pp);
+			for (ctrl = 0; ctrl < num_ctrls; ctrl++) {
+				if (pp->msi_irq[ctrl] > 0)
+					irq_set_chained_handler_and_data(pp->msi_irq[ctrl],
+									 dw_chained_msi_isr,
+									 pp);
+			}
 
 			ret = dma_set_mask(pci->dev, DMA_BIT_MASK(32));
 			if (ret)
diff --git a/drivers/pci/controller/dwc/pcie-designware.h b/drivers/pci/controller/dwc/pcie-designware.h
index 7d6e9b7576be..9c1a38b0a6b3 100644
--- a/drivers/pci/controller/dwc/pcie-designware.h
+++ b/drivers/pci/controller/dwc/pcie-designware.h
@@ -187,7 +187,7 @@  struct pcie_port {
 	u32			io_size;
 	int			irq;
 	const struct dw_pcie_host_ops *ops;
-	int			msi_irq;
+	int			msi_irq[MAX_MSI_CTRLS];
 	struct irq_domain	*irq_domain;
 	struct irq_domain	*msi_domain;
 	u16			msi_msg;
diff --git a/drivers/pci/controller/dwc/pcie-keembay.c b/drivers/pci/controller/dwc/pcie-keembay.c
index 1ac29a6eef22..297e6e926c00 100644
--- a/drivers/pci/controller/dwc/pcie-keembay.c
+++ b/drivers/pci/controller/dwc/pcie-keembay.c
@@ -338,7 +338,7 @@  static int keembay_pcie_add_pcie_port(struct keembay_pcie *pcie,
 	int ret;
 
 	pp->ops = &keembay_pcie_host_ops;
-	pp->msi_irq = -ENODEV;
+	pp->msi_irq[0] = -ENODEV;
 
 	ret = keembay_pcie_setup_msi_irq(pcie);
 	if (ret)
diff --git a/drivers/pci/controller/dwc/pcie-spear13xx.c b/drivers/pci/controller/dwc/pcie-spear13xx.c
index 1569e82b5568..cc7776833810 100644
--- a/drivers/pci/controller/dwc/pcie-spear13xx.c
+++ b/drivers/pci/controller/dwc/pcie-spear13xx.c
@@ -172,7 +172,7 @@  static int spear13xx_add_pcie_port(struct spear13xx_pcie *spear13xx_pcie,
 	}
 
 	pp->ops = &spear13xx_pcie_host_ops;
-	pp->msi_irq = -ENODEV;
+	pp->msi_irq[0] = -ENODEV;
 
 	ret = dw_pcie_host_init(pp);
 	if (ret) {
diff --git a/drivers/pci/controller/dwc/pcie-tegra194.c b/drivers/pci/controller/dwc/pcie-tegra194.c
index cc2678490162..7056072637ab 100644
--- a/drivers/pci/controller/dwc/pcie-tegra194.c
+++ b/drivers/pci/controller/dwc/pcie-tegra194.c
@@ -2262,7 +2262,7 @@  static void tegra194_pcie_shutdown(struct platform_device *pdev)
 
 	disable_irq(pcie->pci.pp.irq);
 	if (IS_ENABLED(CONFIG_PCI_MSI))
-		disable_irq(pcie->pci.pp.msi_irq);
+		disable_irq(pcie->pci.pp.msi_irq[0]);
 
 	tegra194_pcie_pme_turnoff(pcie);
 	tegra_pcie_unconfig_controller(pcie);