Freescale PCIe controllers v3.0 and later need to set bit CFG_READY to allow all inbound configuration transactions to be processed normally when in EP mode. However, bit CFG_READY has been moved from PCIe configuration space to CCSR PCIe configuration register comparing previous version. The patch is to set this bit according to PCIe version.

Signed-off-by: Ed Swarthout Ed.Swarthout@freescale.com Signed-off-by: Roy Zang tie-fei.zang@freescale.com Signed-off-by: Minghuan Lian Minghuan.Lian@freescale.com --- arch/powerpc/include/asm/fsl_pci.h | 1 + drivers/pci/fsl_pci_init.c | 8 +++++++- 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/arch/powerpc/include/asm/fsl_pci.h b/arch/powerpc/include/asm/fsl_pci.h index 5be718b..8bee8ca 100644 --- a/arch/powerpc/include/asm/fsl_pci.h +++ b/arch/powerpc/include/asm/fsl_pci.h @@ -19,6 +19,7 @@ #define FSL_PCI_PBFR 0x44

#define FSL_PCIE_CFG_RDY 0x4b0 +#define FSL_PCIE_V3_CFG_RDY 0x1 #define FSL_PROG_IF_AGENT 0x1

#define PCI_LTSSM 0x404 /* PCIe Link Training, Status State Machine */ diff --git a/drivers/pci/fsl_pci_init.c b/drivers/pci/fsl_pci_init.c index 231b075..1143178 100644 --- a/drivers/pci/fsl_pci_init.c +++ b/drivers/pci/fsl_pci_init.c @@ -682,8 +682,14 @@ void fsl_pci_config_unlock(struct pci_controller *hose) pcie_cap_pos = pci_hose_find_capability(hose, dev, PCI_CAP_ID_EXP); pci_hose_read_config_byte(hose, dev, pcie_cap_pos, &pcie_cap); if (pcie_cap != 0x0) { + ccsr_fsl_pci_t *pci = (ccsr_fsl_pci_t *)hose->cfg_addr; + u32 block_rev = in_be32(&pci->block_rev1); /* PCIe - set CFG_READY bit of Configuration Ready Register */ - pci_hose_write_config_byte(hose, dev, FSL_PCIE_CFG_RDY, 0x1); + if (block_rev >= PEX_IP_BLK_REV_3_0) + setbits_be32(&pci->config, FSL_PCIE_V3_CFG_RDY); + else + pci_hose_write_config_byte(hose, dev, + FSL_PCIE_CFG_RDY, 0x1); } else { /* PCI - clear ACL bit of PBFR */ pci_hose_read_config_word(hose, dev, FSL_PCI_PBFR, &pbfr);