ppc/85xx/pci: fsl_pci_init: pcie agent mode support

Originally written by Jason Jin and Mingkai Hu for mpc8536.

When QorIQ based board is configured as a PCIe agent, then unlock/enable
inbound PCI configuration cycles and init a 4K inbound memory window;
so that a PCIe host can access the PCIe agents SDRAM at address 0x0

* 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>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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 @@
 				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 @@
 				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 @@
 				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 @@
 				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 @@
 				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 @@
 				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 @@
 				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 @@
 				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 @@
 
 		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 @@
 		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");
 	}