Commit df08ac01 authored by Pali Rohár's avatar Pali Rohár Committed by Lorenzo Pieralisi
Browse files

PCI: mvebu: Setup PCIe controller to Root Complex mode 

This driver operates only in Root Complex mode, so ensure that hardware is
properly configured in Root Complex mode.

Link: https://lore.kernel.org/r/20211125124605.25915-10-pali@kernel.org


Signed-off-by: default avatarPali Rohár <pali@kernel.org>
Signed-off-by: default avatarLorenzo Pieralisi <lorenzo.pieralisi@arm.com>
parent e7a01876

drivers/pci/controller/pci-mvebu.c

+7 −1
Original line number Diff line number Diff line
@@ -55,6 +55,7 @@ 
#define  PCIE_MASK_ENABLE_INTS          0x0f000000

#define PCIE_CTRL_OFF		0x1a00

#define  PCIE_CTRL_X1_MODE		0x0001

#define  PCIE_CTRL_RC_MODE		BIT(1)

#define PCIE_STAT_OFF		0x1a04

#define  PCIE_STAT_BUS                  0xff00

#define  PCIE_STAT_DEV                  0x1f0000
@@ -213,7 +214,12 @@ static void mvebu_pcie_setup_wins(struct mvebu_pcie_port *port) 


static void mvebu_pcie_setup_hw(struct mvebu_pcie_port *port)

{

	u32 cmd, mask;

	u32 ctrl, cmd, mask;



	/* Setup PCIe controller to Root Complex mode. */

	ctrl = mvebu_readl(port, PCIE_CTRL_OFF);

	ctrl |= PCIE_CTRL_RC_MODE;

	mvebu_writel(port, ctrl, PCIE_CTRL_OFF);



	/* Disable Root Bridge I/O space, memory space and bus mastering. */

	cmd = mvebu_readl(port, PCIE_CMD_OFF);