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| author | Ed Swarthout <Ed.Swarthout@freescale.com> | 2009-11-02 09:05:49 -0600 |
|---|---|---|
| committer | Kumar Gala <galak@kernel.crashing.org> | 2009-11-04 09:16:30 -0600 |
| commit | 715d8f7608f77c93f1807a032644893fd5b6d08b (patch) | |
| tree | 753315d236cd213c5b4805988539dfb121dc5020 | |
| parent | 01471d538fb163f472a769f21267d7676c91267c (diff) | |
| download | u-boot-imx-715d8f7608f77c93f1807a032644893fd5b6d08b.zip u-boot-imx-715d8f7608f77c93f1807a032644893fd5b6d08b.tar.gz u-boot-imx-715d8f7608f77c93f1807a032644893fd5b6d08b.tar.bz2 | |
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 <Ed.Swarthout@freescale.com>
Acked-by: Vivek Mahajan <vivek.mahajan@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| -rw-r--r-- | drivers/pci/fsl_pci_init.c | 18 | ||||
| -rw-r--r-- | include/asm-ppc/fsl_pci.h | 1 |
2 files changed, 18 insertions, 1 deletions
diff --git a/drivers/pci/fsl_pci_init.c b/drivers/pci/fsl_pci_init.c index 87944bf..170cc25 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); diff --git a/include/asm-ppc/fsl_pci.h b/include/asm-ppc/fsl_pci.h index 2790da7..a5f72f5 100644 --- a/include/asm-ppc/fsl_pci.h +++ b/include/asm-ppc/fsl_pci.h @@ -25,6 +25,7 @@ int is_fsl_pci_agent(enum law_trgt_if trgt, u32 host_agent); int is_fsl_pci_cfg(enum law_trgt_if trgt, u32 io_sel); +int fsl_is_pci_agent(struct pci_controller *hose); void fsl_pci_init(struct pci_controller *hose, u32 cfg_addr, u32 cfg_data); void fsl_pci_config_unlock(struct pci_controller *hose); void ft_fsl_pci_setup(void *blob, const char *pci_alias, |