From: John Schmoller jschmoller@xes-inc.com
Add a new 'pci enum' command which re-enumerates the PCI buses. This command is enabled via the CONFIG_CMD_PCI_ENUM define and can be useful in boards with FPGAs connected via PCI/PCIe, boards that support PCI hot-plugging, or during PCI debug.
Also enable the 'pci enum' command for X-ES's Freescale-based boards.
Signed-off-by: John Schmoller jschmoller@xes-inc.com Signed-off-by: Peter Tyser ptyser@xes-inc.com Acked-by: Kumar Gala galak@kernel.crashing.org Acked-by: Wolfgang Denk wd@denx.de --- common/cmd_pci.c | 13 +++++++++++++ drivers/pci/fsl_pci_init.c | 3 +++ drivers/pci/pci.c | 4 +++- include/configs/XPEDITE5170.h | 1 + include/configs/XPEDITE5200.h | 1 + include/configs/XPEDITE5370.h | 1 + 6 files changed, 22 insertions(+), 1 deletions(-)
diff --git a/common/cmd_pci.c b/common/cmd_pci.c index 4bde059..ccf5ada 100644 --- a/common/cmd_pci.c +++ b/common/cmd_pci.c @@ -497,6 +497,10 @@ int do_pci (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) if ((bdf = get_pci_dev(argv[2])) == -1) return 1; break; +#ifdef CONFIG_CMD_PCI_ENUM + case 'e': + break; +#endif default: /* scan bus */ value = 1; /* short listing */ bdf = 0; /* bus number */ @@ -518,6 +522,11 @@ int do_pci (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) return 0; case 'd': /* display */ return pci_cfg_display(bdf, addr, size, value); +#ifdef CONFIG_CMD_PCI_ENUM + case 'e': + pci_init(); + return 0; +#endif case 'n': /* next */ if (argc < 4) goto usage; @@ -545,6 +554,10 @@ U_BOOT_CMD( "list and access PCI Configuration Space", "[bus] [long]\n" " - short or long list of PCI devices on bus 'bus'\n" +#ifdef CONFIG_CMD_PCI_ENUM + "pci enum\n" + " - re-enumerate PCI buses\n" +#endif "pci header b.d.f\n" " - show header of PCI device 'bus.device.function'\n" "pci display[.b, .w, .l] b.d.f [address] [# of objects]\n" diff --git a/drivers/pci/fsl_pci_init.c b/drivers/pci/fsl_pci_init.c index 001e6eb..1f02103 100644 --- a/drivers/pci/fsl_pci_init.c +++ b/drivers/pci/fsl_pci_init.c @@ -91,6 +91,9 @@ int fsl_setup_hose(struct pci_controller *hose, unsigned long addr) { volatile ccsr_fsl_pci_t *pci = (ccsr_fsl_pci_t *) addr;
+ /* Reset hose to make sure its in a clean state */ + memset(hose, 0, sizeof(struct pci_controller)); + pci_setup_indirect(hose, (u32)&pci->cfg_addr, (u32)&pci->cfg_data);
return fsl_is_pci_agent(hose); diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index cd64a87..848746f 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -139,7 +139,7 @@ void *pci_map_bar(pci_dev_t pdev, int bar, int flags) * */
-static struct pci_controller* hose_head = NULL; +static struct pci_controller* hose_head;
void pci_register_hose(struct pci_controller* hose) { @@ -640,6 +640,8 @@ void pci_init(void) } #endif /* CONFIG_PCI_BOOTDELAY */
+ hose_head = NULL; + /* now call board specific pci_init()... */ pci_init_board(); } diff --git a/include/configs/XPEDITE5170.h b/include/configs/XPEDITE5170.h index 9ff28a2..ab6d4b4 100644 --- a/include/configs/XPEDITE5170.h +++ b/include/configs/XPEDITE5170.h @@ -545,6 +545,7 @@ extern unsigned long get_board_sys_clk(unsigned long dummy); #define CONFIG_CMD_PCA953X #define CONFIG_CMD_PCA953X_INFO #define CONFIG_CMD_PCI +#define CONFIG_CMD_PCI_ENUM #define CONFIG_CMD_PING #define CONFIG_CMD_REGINFO #define CONFIG_CMD_SNTP diff --git a/include/configs/XPEDITE5200.h b/include/configs/XPEDITE5200.h index db03777..00cd516 100644 --- a/include/configs/XPEDITE5200.h +++ b/include/configs/XPEDITE5200.h @@ -339,6 +339,7 @@ #define CONFIG_CMD_PCA953X #define CONFIG_CMD_PCA953X_INFO #define CONFIG_CMD_PCI +#define CONFIG_CMD_PCI_ENUM #define CONFIG_CMD_PING #define CONFIG_CMD_SNTP #define CONFIG_CMD_REGINFO diff --git a/include/configs/XPEDITE5370.h b/include/configs/XPEDITE5370.h index 01047c8..73e3d52 100644 --- a/include/configs/XPEDITE5370.h +++ b/include/configs/XPEDITE5370.h @@ -396,6 +396,7 @@ extern unsigned long get_board_ddr_clk(unsigned long dummy); #define CONFIG_CMD_PCA953X #define CONFIG_CMD_PCA953X_INFO #define CONFIG_CMD_PCI +#define CONFIG_CMD_PCI_ENUM #define CONFIG_CMD_PING #define CONFIG_CMD_SAVEENV #define CONFIG_CMD_SNTP