[PATCH 04/13] PCI: brcmstb: Declare and assign quirk OB_WIN_32BIT_ADDR

[Jim Quinlan]

Even though only BMIPs chips have this quirk, it is more uniform and
readable to define this specific quirk in which the outbound region must
reside in the lower 4GB region.

Signed-off-by: Jim Quinlan <james.quinlan@xxxxxxxxxxxx>
---
 drivers/pci/controller/pcie-brcmstb.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/pci/controller/pcie-brcmstb.c b/drivers/pci/controller/pcie-brcmstb.c
index bf002bcf6bd5..71ddd8a760af 100644
--- a/drivers/pci/controller/pcie-brcmstb.c
+++ b/drivers/pci/controller/pcie-brcmstb.c
@@ -288,6 +288,8 @@ struct inbound_win {
  * or a hang (AXI).
  */
 #define CFG_QUIRK_AVOID_BRIDGE_SHUTDOWN		BIT(0)
+/* The outbound windows must be within the 0-4GB region */
+#define CFG_QUIRK_OB_WIN_32BIT_ADDR		BIT(1)
 
 /* FLAGS */
 #define BFLAG(pcie, flag)			((pcie)->cfg->flags & CFG_FLG_ ## flag)
@@ -519,7 +521,7 @@ static void brcm_pcie_set_outbound_win(struct brcm_pcie *pcie,
 			  PCIE_MISC_CPU_2_PCIE_MEM_WIN0_BASE_LIMIT_LIMIT_MASK);
 	writel(tmp, pcie->base + PCIE_MEM_WIN0_BASE_LIMIT(win));
 
-	if (is_bmips(pcie))
+	if (BQUIRK(pcie, OB_WIN_32BIT_ADDR))
 		return;
 
 	/* Write the cpu & limit addr upper bits */
@@ -1995,6 +1997,7 @@ static const struct pcie_cfg_data bcm7425_cfg = {
 	.perst_set	= brcm_pcie_perst_set_generic,
 	.bridge_sw_init_set = brcm_pcie_bridge_sw_init_set_generic,
 	.num_inbound_wins = 3,
+	.quirks		= CFG_QUIRK_OB_WIN_32BIT_ADDR,
 };
 
 static const struct pcie_cfg_data bcm7435_cfg = {
@@ -2003,6 +2006,7 @@ static const struct pcie_cfg_data bcm7435_cfg = {
 	.perst_set	= brcm_pcie_perst_set_generic,
 	.bridge_sw_init_set = brcm_pcie_bridge_sw_init_set_generic,
 	.num_inbound_wins = 3,
+	.quirks		= CFG_QUIRK_OB_WIN_32BIT_ADDR,
 };
 
 static const struct pcie_cfg_data bcm7216_cfg = {
-- 
2.34.1