diff options
| -rw-r--r-- | arch/powerpc/include/asm/config_mpc85xx.h | 1 | ||||
| -rw-r--r-- | arch/powerpc/include/asm/fsl_pci.h | 35 | ||||
| -rw-r--r-- | drivers/pci/fsl_pci_init.c | 20 | ||||
| -rw-r--r-- | include/pci.h | 7 |
4 files changed, 48 insertions, 15 deletions
diff --git a/arch/powerpc/include/asm/config_mpc85xx.h b/arch/powerpc/include/asm/config_mpc85xx.h index f94638969..517e9b29d 100644 --- a/arch/powerpc/include/asm/config_mpc85xx.h +++ b/arch/powerpc/include/asm/config_mpc85xx.h @@ -578,6 +578,7 @@ #define CONFIG_SYS_FSL_ERRATUM_A005871 #define CONFIG_SYS_FSL_ERRATUM_A006593 #define CONFIG_SYS_CCSRBAR_DEFAULT 0xfe000000 +#define CONFIG_SYS_FSL_PCI_VER_3_X #ifdef CONFIG_PPC_B4860 #define CONFIG_SYS_FSL_CORES_PER_CLUSTER 4 diff --git a/arch/powerpc/include/asm/fsl_pci.h b/arch/powerpc/include/asm/fsl_pci.h index c740da37c..749411c10 100644 --- a/arch/powerpc/include/asm/fsl_pci.h +++ b/arch/powerpc/include/asm/fsl_pci.h @@ -1,5 +1,5 @@ /* - * Copyright 2007,2009-2011 Freescale Semiconductor, Inc. + * Copyright 2007,2009-2012 Freescale Semiconductor, Inc. * * SPDX-License-Identifier: GPL-2.0+ */ @@ -13,6 +13,34 @@ #define PEX_IP_BLK_REV_2_2 0x02080202 #define PEX_IP_BLK_REV_2_3 0x02080203 +#define PEX_IP_BLK_REV_3_0 0x02080300 + +/* Freescale-specific PCI config registers */ +#define FSL_PCI_PBFR 0x44 + +#ifdef CONFIG_SYS_FSL_PCI_VER_3_X +/* Currently only the PCIe capability is used, so hardcode the offset. + * if more capabilities need to be justified, the capability link method + * should be applied here + */ +#define FSL_PCIE_CAP_ID 0x70 +#define PCI_DCR 0x78 /* PCIe Device Control Register */ +#define PCI_DSR 0x7a /* PCIe Device Status Register */ +#define PCI_LSR 0x82 /* PCIe Link Status Register */ +#define PCI_LCR 0x80 /* PCIe Link Control Register */ +#else +#define FSL_PCIE_CAP_ID 0x4c +#define PCI_DCR 0x54 /* PCIe Device Control Register */ +#define PCI_DSR 0x56 /* PCIe Device Status Register */ +#define PCI_LSR 0x5e /* PCIe Link Status Register */ +#define PCI_LCR 0x5c /* PCIe Link Control Register */ +#endif + +#define FSL_PCIE_CFG_RDY 0x4b0 +#define FSL_PROG_IF_AGENT 0x1 + +#define PCI_LTSSM 0x404 /* PCIe Link Training, Status State Machine */ +#define PCI_LTSSM_L0 0x16 /* L0 state */ int fsl_setup_hose(struct pci_controller *hose, unsigned long addr); int fsl_is_pci_agent(struct pci_controller *hose); @@ -149,7 +177,10 @@ typedef struct ccsr_pci { u32 perr_cap3; /* 0xe34 - PCIE Error Capture Register 3 */ char res23[200]; u32 pdb_stat; /* 0xf00 - PCIE Debug Status */ - char res24[252]; + char res24[16]; + u32 pex_csr0; /* 0xf14 - PEX Control/Status register 0*/ + u32 pex_csr1; /* 0xf18 - PEX Control/Status register 1*/ + char res25[228]; } ccsr_fsl_pci_t; #define PCIE_CONFIG_PC 0x00020000 #define PCIE_CONFIG_OB_CK 0x00002000 diff --git a/drivers/pci/fsl_pci_init.c b/drivers/pci/fsl_pci_init.c index 17ca961ab..d55db1a0b 100644 --- a/drivers/pci/fsl_pci_init.c +++ b/drivers/pci/fsl_pci_init.c @@ -28,12 +28,6 @@ DECLARE_GLOBAL_DATA_PTR; #include <asm/io.h> #include <asm/fsl_pci.h> -/* Freescale-specific PCI config registers */ -#define FSL_PCI_PBFR 0x44 -#define FSL_PCIE_CAP_ID 0x4c -#define FSL_PCIE_CFG_RDY 0x4b0 -#define FSL_PROG_IF_AGENT 0x1 - #ifndef CONFIG_SYS_PCI_MEMORY_BUS #define CONFIG_SYS_PCI_MEMORY_BUS 0 #endif @@ -424,6 +418,15 @@ void fsl_pci_init(struct pci_controller *hose, struct fsl_pci_info *pci_info) udelay(1); #endif if (pcie_cap == PCI_CAP_ID_EXP) { + if (block_rev >= PEX_IP_BLK_REV_3_0) { +#define PEX_CSR0_LTSSM_MASK 0xFC +#define PEX_CSR0_LTSSM_SHIFT 2 + ltssm = (in_be32(&pci->pex_csr0) + & PEX_CSR0_LTSSM_MASK) >> PEX_CSR0_LTSSM_SHIFT; + enabled = (ltssm == 0x11) ? 1 : 0; + } else { + /* pci_hose_read_config_word(hose, dev, PCI_LTSSM, <ssm); */ + /* enabled = ltssm >= PCI_LTSSM_L0; */ pci_hose_read_config_word(hose, dev, PCI_LTSSM, <ssm); enabled = ltssm >= PCI_LTSSM_L0; @@ -456,6 +459,7 @@ void fsl_pci_init(struct pci_controller *hose, struct fsl_pci_info *pci_info) PCI_BASE_ADDRESS_0, pcicsrbar); } #endif + } #ifdef CONFIG_SYS_P4080_ERRATUM_PCIE_A003 if (enabled == 0) { @@ -564,6 +568,10 @@ int fsl_is_pci_agent(struct pci_controller *hose) u8 prog_if; pci_hose_read_config_byte(hose, dev, PCI_CLASS_PROG, &prog_if); + /* Programming Interface (PCI_CLASS_PROG) + * 0 == pci host or pcie root-complex, + * 1 == pci agent or pcie end-point + */ return (prog_if == FSL_PROG_IF_AGENT); } } diff --git a/include/pci.h b/include/pci.h index 01002a430..911ba89ac 100644 --- a/include/pci.h +++ b/include/pci.h @@ -410,13 +410,6 @@ #define PCI_MAX_PCI_DEVICES 32 #define PCI_MAX_PCI_FUNCTIONS 8 -#define PCI_DCR 0x54 /* PCIe Device Control Register */ -#define PCI_DSR 0x56 /* PCIe Device Status Register */ -#define PCI_LSR 0x5e /* PCIe Link Status Register */ -#define PCI_LCR 0x5c /* PCIe Link Control Register */ -#define PCI_LTSSM 0x404 /* PCIe Link Training, Status State Machine */ -#define PCI_LTSSM_L0 0x16 /* L0 state */ - /* Include the ID list */ #include <pci_ids.h> |