From 7f1913938984ef6c6a46cb53e003719196d9c5de Mon Sep 17 00:00:00 2001 From: Grzegorz Bernacki Date: Fri, 7 Sep 2007 18:20:23 +0200 Subject: [PPC440SPe] Improve PCIe configuration space access - correct configuration space mapping - correct bus numbering - better access to config space Prior to this patch, the 440SPe host/PCIe bridge was able to configure only the first device on the first bus. We now allow to configure up to 16 buses; also, scanning for devices behind the PCIe-PCIe bridge is supported, so peripheral devices farther in hierarchy can be identified. Signed-off-by: Grzegorz Bernacki --- board/amcc/katmai/katmai.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) (limited to 'board/amcc/katmai/katmai.c') diff --git a/board/amcc/katmai/katmai.c b/board/amcc/katmai/katmai.c index b804d55..a9ae4a3 100644 --- a/board/amcc/katmai/katmai.c +++ b/board/amcc/katmai/katmai.c @@ -392,7 +392,7 @@ int katmai_pcie_card_present(int port) static struct pci_controller pcie_hose[3] = {{0},{0},{0}}; -void pcie_setup_hoses(void) +void pcie_setup_hoses(int busno) { struct pci_controller *hose; int i, bus; @@ -401,7 +401,7 @@ void pcie_setup_hoses(void) * assume we're called after the PCIX hose is initialized, which takes * bus ID 0 and therefore start numbering PCIe's from 1. */ - bus = 1; + bus = busno; for (i = 0; i <= 2; i++) { /* Check for katmai card presence */ if (!katmai_pcie_card_present(i)) @@ -418,8 +418,8 @@ void pcie_setup_hoses(void) hose = &pcie_hose[i]; hose->first_busno = bus; - hose->last_busno = bus; - bus++; + hose->last_busno = bus; + hose->current_busno = bus; /* setup mem resource */ pci_set_region(hose->regions + 0, @@ -443,6 +443,7 @@ void pcie_setup_hoses(void) * Config access can only go down stream */ hose->last_busno = pci_hose_scan(hose); + bus = hose->last_busno + 1; #endif } } -- cgit v1.1 From 6efc1fc0b63e55f94c5bc61d8dd23c918e3bc778 Mon Sep 17 00:00:00 2001 From: Grzegorz Bernacki Date: Fri, 7 Sep 2007 18:35:37 +0200 Subject: [PPC440SPe] PCIe environment settings for Katmai and Yucca - 'pciconfighost' is set by default in order to be able to scan bridges behind the primary host/PCIe - 'pciscandelay' env variable is recognized to allow for user-controlled delay before the PCIe bus enumeration; some peripheral devices require a significant delay before they can be scanned (e.g. LSI8408E); without the delay they are not detected Signed-off-by: Grzegorz Bernacki --- board/amcc/katmai/katmai.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'board/amcc/katmai/katmai.c') diff --git a/board/amcc/katmai/katmai.c b/board/amcc/katmai/katmai.c index a9ae4a3..afd60ec 100644 --- a/board/amcc/katmai/katmai.c +++ b/board/amcc/katmai/katmai.c @@ -396,6 +396,8 @@ void pcie_setup_hoses(int busno) { struct pci_controller *hose; int i, bus; + char *env; + unsigned int delay; /* * assume we're called after the PCIX hose is initialized, which takes @@ -439,6 +441,16 @@ void pcie_setup_hoses(int busno) */ #else ppc440spe_setup_pcie_rootpoint(hose, i); + + env = getenv ("pciscandelay"); + if (env != NULL) { + delay = simple_strtoul (env, NULL, 10); + if (delay > 5) + printf ("Warning, expect noticable delay before PCIe" + "scan due to 'pciscandelay' value!\n"); + mdelay (delay * 1000); + } + /* * Config access can only go down stream */ -- cgit v1.1 From 1218abf1b5817a39a82399b4b928b00750575bda Mon Sep 17 00:00:00 2001 From: Wolfgang Denk Date: Sat, 15 Sep 2007 20:48:41 +0200 Subject: Fix cases where DECLARE_GLOBAL_DATA_PTR was not declared as global Signed-off-by: Wolfgang Denk --- board/amcc/katmai/katmai.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'board/amcc/katmai/katmai.c') diff --git a/board/amcc/katmai/katmai.c b/board/amcc/katmai/katmai.c index afd60ec..a49066f 100644 --- a/board/amcc/katmai/katmai.c +++ b/board/amcc/katmai/katmai.c @@ -34,6 +34,8 @@ #undef PCIE_ENDPOINT /* #define PCIE_ENDPOINT 1 */ +DECLARE_GLOBAL_DATA_PTR; + int ppc440spe_init_pcie_rootport(int port); void ppc440spe_setup_pcie(struct pci_controller *hose, int port); @@ -322,8 +324,6 @@ int pci_pre_init(struct pci_controller * hose ) #if defined(CONFIG_PCI) && defined(CFG_PCI_TARGET_INIT) void pci_target_init(struct pci_controller * hose ) { - DECLARE_GLOBAL_DATA_PTR; - /*-------------------------------------------------------------------+ * Disable everything *-------------------------------------------------------------------*/ -- cgit v1.1