PCI: dra7xx: Reset all BARs during initialization (85aa1399) · Commits · 戴 / test

dra7xx has all base address registers (BAR) enabled by default. Reset all BARs during initialization and so that BARs are enabled only if they are actually used. Signed-off-by:

Kishon Vijay Abraham I <kishon@ti.com> Signed-off-by:

Bjorn Helgaas <bhelgaas@google.com>

drivers/pci/dwc/pci-dra7xx.c

+13 −0

Original line number	Diff line number	Diff line
		@@ -335,10 +335,23 @@ static irqreturn_t dra7xx_pcie_irq_handler(int irq, void *arg)
		return IRQ_HANDLED;
		}

		static void dw_pcie_ep_reset_bar(struct dw_pcie *pci, enum pci_barno bar)
		{
		u32 reg;

		reg = PCI_BASE_ADDRESS_0 + (4 * bar);
		dw_pcie_writel_dbi2(pci, reg, 0x0);
		dw_pcie_writel_dbi(pci, reg, 0x0);
		}

		static void dra7xx_pcie_ep_init(struct dw_pcie_ep *ep)
		{
		struct dw_pcie *pci = to_dw_pcie_from_ep(ep);
		struct dra7xx_pcie *dra7xx = to_dra7xx_pcie(pci);
		enum pci_barno bar;

		for (bar = BAR_0; bar <= BAR_5; bar++)
		dw_pcie_ep_reset_bar(pci, bar);

		dra7xx_pcie_enable_wrapper_interrupts(dra7xx);
		}

Admin message