From 715d8f7608f77c93f1807a032644893fd5b6d08b Mon Sep 17 00:00:00 2001 From: Ed Swarthout Date: Mon, 2 Nov 2009 09:05:49 -0600 Subject: fsl_pci_init_port end-point initialization is broken commit 70ed869e broke fsl pcie end-point initialization. Returning 0 is not correct. The function must return the first free bus number for the next controller. fsl_pci_init() must still be called and a bus allocated even if the controller is an end-point. Signed-off-by: Ed Swarthout Acked-by: Vivek Mahajan Signed-off-by: Kumar Gala --- drivers/pci/fsl_pci_init.c | 18 +++++++++++++++++- 1 file changed, 17 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/pci/fsl_pci_init.c b/drivers/pci/fsl_pci_init.c index 87944bfad..170cc257c 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 @@ -42,6 +42,7 @@ DECLARE_GLOBAL_DATA_PTR; #define FSL_PCI_PBFR 0x44 #define FSL_PCIE_CAP_ID 0x4c #define FSL_PCIE_CFG_RDY 0x4b0 +#define FSL_PROG_IF_AGENT 0x1 void pciauto_prescan_setup_bridge(struct pci_controller *hose, pci_dev_t dev, int sub_bus); @@ -412,6 +413,16 @@ void fsl_pci_init(struct pci_controller *hose, u32 cfg_addr, u32 cfg_data) } } +int fsl_is_pci_agent(struct pci_controller *hose) +{ + u8 prog_if; + pci_dev_t dev = PCI_BDF(hose->first_busno, 0, 0); + + pci_hose_read_config_byte(hose, dev, PCI_CLASS_PROG, &prog_if); + + return (prog_if == FSL_PROG_IF_AGENT); +} + int fsl_pci_init_port(struct fsl_pci_info *pci_info, struct pci_controller *hose, int busno) { @@ -450,6 +461,11 @@ int fsl_pci_init_port(struct fsl_pci_info *pci_info, fsl_pci_init(hose, (u32)&pci->cfg_addr, (u32)&pci->cfg_data); + if (fsl_is_pci_agent(hose)) { + fsl_pci_config_unlock(hose); + hose->last_busno = hose->first_busno; + } + printf(" PCIE%x on bus %02x - %02x\n", pci_info->pci_num, hose->first_busno, hose->last_busno); -- cgit v1.2.3