Originally written by Jason Jin and Mingkai Hu for mpc8536.
When QorIQ based board is configured as a PCIe agent, then unlock the config and init a 4K inbound memory window; so that a PCIe host can request it.
* Supported in fsl_pci_init_port() after adding pcie_ep as a param * Revamped copyright in drivers/pci/fsl_pci_init.c * Mods in 85xx based board specific pci init after this change
Signed-off-by: Vivek Mahajan vivek.mahajan@freescale.com --- board/freescale/mpc8572ds/mpc8572ds.c | 6 +++--- board/freescale/p1_p2_rdb/pci.c | 4 ++-- board/freescale/p2020ds/p2020ds.c | 6 +++--- board/sbc8548/sbc8548.c | 4 ++-- drivers/pci/fsl_pci_init.c | 18 ++++++++++++++++-- include/asm-ppc/fsl_pci.h | 3 ++- 6 files changed, 28 insertions(+), 13 deletions(-)
diff --git a/board/freescale/mpc8572ds/mpc8572ds.c b/board/freescale/mpc8572ds/mpc8572ds.c index 933dd12..2b32234 100644 --- a/board/freescale/mpc8572ds/mpc8572ds.c +++ b/board/freescale/mpc8572ds/mpc8572ds.c @@ -199,7 +199,7 @@ void pci_init_board(void) pcie_ep ? "End Point" : "Root Complex", pci_info[num].regs); first_free_busno = fsl_pci_init_port(&pci_info[num++], - &pcie3_hose, first_free_busno); + &pcie3_hose, first_free_busno, pcie_ep); /* * Activate ULI1575 legacy chip by performing a fake * memory access. Needed to make ULI RTC work. @@ -231,7 +231,7 @@ void pci_init_board(void) pcie_ep ? "End Point" : "Root Complex", pci_info[num].regs); first_free_busno = fsl_pci_init_port(&pci_info[num++], - &pcie2_hose, first_free_busno); + &pcie2_hose, first_free_busno, pcie_ep); } else { printf (" PCIE2: disabled\n"); } @@ -251,7 +251,7 @@ void pci_init_board(void) pcie_ep ? "End Point" : "Root Complex", pci_info[num].regs); first_free_busno = fsl_pci_init_port(&pci_info[num++], - &pcie1_hose, first_free_busno); + &pcie1_hose, first_free_busno, pcie_ep); } else { printf (" PCIE1: disabled\n"); } diff --git a/board/freescale/p1_p2_rdb/pci.c b/board/freescale/p1_p2_rdb/pci.c index 4c08f9e..7736596 100644 --- a/board/freescale/p1_p2_rdb/pci.c +++ b/board/freescale/p1_p2_rdb/pci.c @@ -71,7 +71,7 @@ void pci_init_board(void) pcie_ep ? "End Point" : "Root Complex", pci_info[num].regs); first_free_busno = fsl_pci_init_port(&pci_info[num++], - &pcie2_hose, first_free_busno); + &pcie2_hose, first_free_busno, pcie_ep); } else { printf (" PCIE2: disabled\n"); } @@ -90,7 +90,7 @@ void pci_init_board(void) pcie_ep ? "End Point" : "Root Complex", pci_info[num].regs); first_free_busno = fsl_pci_init_port(&pci_info[num++], - &pcie1_hose, first_free_busno); + &pcie1_hose, first_free_busno, pcie_ep); } else { printf (" PCIE1: disabled\n"); } diff --git a/board/freescale/p2020ds/p2020ds.c b/board/freescale/p2020ds/p2020ds.c index e38c014..9878fba 100644 --- a/board/freescale/p2020ds/p2020ds.c +++ b/board/freescale/p2020ds/p2020ds.c @@ -227,7 +227,7 @@ void pci_init_board(void) pcie_ep ? "End Point" : "Root Complex", pci_info[num].regs); first_free_busno = fsl_pci_init_port(&pci_info[num++], - &pcie2_hose, first_free_busno); + &pcie2_hose, first_free_busno, pcie_ep);
/* * The workaround doesn't work on p2020 because the location @@ -267,7 +267,7 @@ void pci_init_board(void) pcie_ep ? "End Point" : "Root Complex", pci_info[num].regs); first_free_busno = fsl_pci_init_port(&pci_info[num++], - &pcie3_hose, first_free_busno); + &pcie3_hose, first_free_busno, pcie_ep); } else { printf(" PCIE3: disabled\n"); } @@ -286,7 +286,7 @@ void pci_init_board(void) pcie_ep ? "End Point" : "Root Complex", pci_info[num].regs); first_free_busno = fsl_pci_init_port(&pci_info[num++], - &pcie1_hose, first_free_busno); + &pcie1_hose, first_free_busno, pcie_ep); } else { printf(" PCIE1: disabled\n"); } diff --git a/board/sbc8548/sbc8548.c b/board/sbc8548/sbc8548.c index 194f6ab..5e3e176 100644 --- a/board/sbc8548/sbc8548.c +++ b/board/sbc8548/sbc8548.c @@ -359,7 +359,7 @@ pci_init_board(void)
SET_STD_PCI_INFO(pci_info[num], 1); first_free_busno = fsl_pci_init_port(&pci_info[num++], - &pci1_hose, first_free_busno); + &pci1_hose, first_free_busno, 0); } else { printf (" PCI: disabled\n"); } @@ -378,7 +378,7 @@ pci_init_board(void) SET_STD_PCIE_INFO(pci_info[num], 1); printf (" PCIE at base address %lx\n", pci_info[num].regs); first_free_busno = fsl_pci_init_port(&pci_info[num++], - &pcie1_hose, first_free_busno); + &pcie1_hose, first_free_busno, 0); } else { printf (" PCIE: disabled\n"); } diff --git a/drivers/pci/fsl_pci_init.c b/drivers/pci/fsl_pci_init.c index 87944bf..289878a 100644 --- a/drivers/pci/fsl_pci_init.c +++ b/drivers/pci/fsl_pci_init.c @@ -1,5 +1,5 @@ /* - * Copyright 2007 Freescale Semiconductor, Inc. + * Copyright 2007-2009 Freescale Semiconductor, Inc. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License @@ -413,13 +413,27 @@ void fsl_pci_init(struct pci_controller *hose, u32 cfg_addr, u32 cfg_data) }
int fsl_pci_init_port(struct fsl_pci_info *pci_info, - struct pci_controller *hose, int busno) + struct pci_controller *hose, int busno, int pcie_ep) { volatile ccsr_fsl_pci_t *pci; struct pci_region *r;
pci = (ccsr_fsl_pci_t *) pci_info->regs;
+ if (pcie_ep) { + pit_t *pi = &pci->pit[2]; + + pci_setup_indirect(hose, (u32) &pci->cfg_addr, + (u32) &pci->cfg_data); + out_be32(&pi->pitar, 0); + out_be32(&pi->piwbar, 0); + out_be32(&pi->piwar, PIWAR_EN | PIWAR_LOCAL | + PIWAR_READ_SNOOP | PIWAR_WRITE_SNOOP | PIWAR_IWS_4K); + + fsl_pci_config_unlock(hose); + return 0; + } + /* on non-PCIe controllers we don't have pme_msg_det so this code * should do nothing since the read will return 0 */ diff --git a/include/asm-ppc/fsl_pci.h b/include/asm-ppc/fsl_pci.h index 2790da7..6b0c89b 100644 --- a/include/asm-ppc/fsl_pci.h +++ b/include/asm-ppc/fsl_pci.h @@ -62,6 +62,7 @@ typedef struct pci_inbound_window { #define PIWAR_LOCAL 0x00f00000 #define PIWAR_READ_SNOOP 0x00050000 #define PIWAR_WRITE_SNOOP 0x00005000 +#define PIWAR_IWS_4K 0x0000000b u32 res2[3]; } pit_t;
@@ -171,7 +172,7 @@ struct fsl_pci_info { };
int fsl_pci_init_port(struct fsl_pci_info *pci_info, - struct pci_controller *hose, int busno); + struct pci_controller *hose, int busno, int pcie_ep);
#define SET_STD_PCI_INFO(x, num) \ { \