-----Original Message----- From: Xiaowei Bao xiaowei.bao@nxp.com Sent: 2020年3月22日 19:13 To: M.h. Lian minghuan.lian@nxp.com; Z.q. Hou zhiqiang.hou@nxp.com; Mingkai Hu mingkai.hu@nxp.com; bmeng.cn@gmail.com; yamada.masahiro@socionext.com; u-boot@lists.denx.de Cc: Xiaowei Bao xiaowei.bao@nxp.com Subject: [PATCH 5/9] pci_ep: layerscape: Add the workaround for errata A-009460
The VF_BARn_REG register's Prefetchable and Type bit fields are overwritten by a write to VF's BAR Mask register. workaround: Before writing to the VF_BARn_MASK_REG register, write 0b to the PCIE_MISC_CONTROL_1_OFF register.
Signed-off-by: Xiaowei Bao xiaowei.bao@nxp.com
drivers/pci/pcie_layerscape_ep.c | 9 +++++++++ 1 file changed, 9 insertions(+)
diff --git a/drivers/pci/pcie_layerscape_ep.c b/drivers/pci/pcie_layerscape_ep.c index bec374b..a2b18ad 100644 --- a/drivers/pci/pcie_layerscape_ep.c +++ b/drivers/pci/pcie_layerscape_ep.c @@ -163,6 +163,15 @@ static void ls_pcie_setup_ep(struct ls_pcie_ep *pcie_ep) if (PCI_EXT_CAP_ID(sriov) == PCI_EXT_CAP_ID_SRIOV) { pcie_ep->sriov_flag = 1; for (pf = 0; pf < PCIE_PF_NUM; pf++) {
/** The VF_BARn_REG register's Prefetchable and Type bit* fields are overwritten by a write to VF's BAR Mask* register. Before writing to the VF_BARn_MASK_REG* register, write 0b to the PCIE_MISC_CONTROL_1_OFF* register.*/writel(0, pcie->dbi + PCIE_MISC_CONTROL_1_OFF);if (pcie_ep->cfg2_flag) { for (vf = 0; vf <= PCIE_VF_NUM; vf++) { ctrl_writel(pcie,-- 2.9.5
Reviewed-by: Hou Zhiqiang Zhiqiang.Hou@nxp.com