[U-Boot] [PATCH V4] mpc83xx:fix pcie configuration space read/write

[Leo Liu]

This patch fix a problem for the pcie enumeration when the mpc83xx pcie controller is
connected with switch or we use both of the two pcie controller.

Signed-off-by: Leo Liu <liucai.lfn at gmail.com>
---
Changes for V2:
	- Avoid line wrap in the patch
Changes for V3
	- Add space between ) and {
Changes for V4
	- Add and use priv_data pointer in pci_controller to save the 
	  mpc83xx pcie private data
      
 arch/powerpc/cpu/mpc83xx/pcie.c |   20 +++++++++++++++++++-
 include/pci.h                   |    2 ++
 2 files changed, 21 insertions(+), 1 deletions(-)

diff --git a/arch/powerpc/cpu/mpc83xx/pcie.c b/arch/powerpc/cpu/mpc83xx/pcie.c
index 46a706d..ee94a8b 100644
--- a/arch/powerpc/cpu/mpc83xx/pcie.c
+++ b/arch/powerpc/cpu/mpc83xx/pcie.c
@@ -30,6 +30,21 @@ DECLARE_GLOBAL_DATA_PTR;
 
 #define PCIE_MAX_BUSES 2
 
+/*private structure for mpc83xx pcie hose*/
+static struct mpc83xx_pcie_priv {
+	u8 index;
+} pcie_priv[PCIE_MAX_BUSES] = {
+	{
+		/*pcie controller 1*/
+		.index = 0,
+	},
+	{
+		/*pcie controller 2*/
+		.index = 1,
+	},
+};
+
+
 static struct {
 	u32 base;
 	u32 size;
@@ -52,7 +67,8 @@ static int mpc83xx_pcie_remap_cfg(struct pci_controller *hose, pci_dev_t dev)
 {
 	int bus = PCI_BUS(dev) - hose->first_busno;
 	immap_t *immr = (immap_t *)CONFIG_SYS_IMMR;
-	pex83xx_t *pex = &immr->pciexp[bus];
+	struct mpc83xx_pcie_priv *pcie_priv = hose->priv_data;
+	pex83xx_t *pex = &immr->pciexp[pcie_priv->index];
 	struct pex_outbound_window *out_win = &pex->bridge.pex_outbound_win[0];
 	u8 devfn = PCI_DEV(dev) << 3 | PCI_FUNC(dev);
 	u32 dev_base = bus << 24 | devfn << 16;
@@ -142,6 +158,8 @@ static void mpc83xx_pcie_register_hose(int bus, struct pci_region *reg,
 
 	hose->cfg_addr = (unsigned int *)mpc83xx_pcie_cfg_space[bus].base;
 
+	hose->priv_data = &pcie_priv[bus];
+
 	pci_set_ops(hose,
 			pcie_read_config_byte,
 			pcie_read_config_word,
diff --git a/include/pci.h b/include/pci.h
index c456006..8b3bdbb 100644
--- a/include/pci.h
+++ b/include/pci.h
@@ -420,6 +420,8 @@ struct pci_controller {
 	/* Used by ppc405 autoconfig*/
 	struct pci_region *pci_fb;
 	int current_busno;
+
+	void *priv_data;
 };
 
 extern __inline__ void pci_set_ops(struct pci_controller *hose,
-- 
1.7.3.1.msysgit.0