From: Hou Zhiqiang <[email protected]> Disable all inbound and outbound windows before set up the windows in kernel, in case transactions match the window set by bootloader.
Signed-off-by: Hou Zhiqiang <[email protected]> Reviewed-by: Minghuan Lian <[email protected]> Reviewed-by: Subrahmanya Lingappa <[email protected]> --- V5: - No functionality change. drivers/pci/controller/pcie-mobiveil.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/drivers/pci/controller/pcie-mobiveil.c b/drivers/pci/controller/pcie-mobiveil.c index 8dc87c7a600e..411e9779da12 100644 --- a/drivers/pci/controller/pcie-mobiveil.c +++ b/drivers/pci/controller/pcie-mobiveil.c @@ -565,6 +565,24 @@ static int mobiveil_bringup_link(struct mobiveil_pcie *pcie) return -ETIMEDOUT; } +static void mobiveil_pcie_disable_ib_win(struct mobiveil_pcie *pcie, int idx) +{ + u32 val; + + val = csr_readl(pcie, PAB_PEX_AMAP_CTRL(idx)); + val &= ~(1 << AMAP_CTRL_EN_SHIFT); + csr_writel(pcie, val, PAB_PEX_AMAP_CTRL(idx)); +} + +static void mobiveil_pcie_disable_ob_win(struct mobiveil_pcie *pcie, int idx) +{ + u32 val; + + val = csr_readl(pcie, PAB_AXI_AMAP_CTRL(idx)); + val &= ~(1 << WIN_ENABLE_SHIFT); + csr_writel(pcie, val, PAB_AXI_AMAP_CTRL(idx)); +} + static void mobiveil_pcie_enable_msi(struct mobiveil_pcie *pcie) { phys_addr_t msg_addr = pcie->pcie_reg_base; @@ -585,6 +603,13 @@ static int mobiveil_host_init(struct mobiveil_pcie *pcie) { u32 value, pab_ctrl, type; struct resource_entry *win; + int i; + + /* Disable all inbound/outbound windows */ + for (i = 0; i < pcie->apio_wins; i++) + mobiveil_pcie_disable_ob_win(pcie, i); + for (i = 0; i < pcie->ppio_wins; i++) + mobiveil_pcie_disable_ib_win(pcie, i); /* setup bus numbers */ value = csr_readl(pcie, PCI_PRIMARY_BUS); -- 2.17.1
