PCI: pci-bridge-emul: Fix big-endian support

Perform conversion to little-endian before every write to configuration
space and convert it back to CPU endianness on reads.

Additionally, initialise every multiple byte field of config space with
the cpu_to_le* macro, which is required since the structure describing
config space of emulated bridge assumes little-endian convention.

Signed-off-by: Grzegorz Jaszczyk <jaz@semihalf.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>

1 files changed, 39 insertions, 39 deletions

diff --git a/drivers/pci/pci-bridge-emul.h b/drivers/pci/pci-bridge-emul.h
index e65b1b79899d..b31883022a8e 100644
--- a/drivers/pci/pci-bridge-emul.h
+++ b/drivers/pci/pci-bridge-emul.h
@@ -6,65 +6,65 @@
 
 /* PCI configuration space of a PCI-to-PCI bridge. */
 struct pci_bridge_emul_conf {
-	u16 vendor;
-	u16 device;
-	u16 command;
-	u16 status;
-	u32 class_revision;
+	__le16 vendor;
+	__le16 device;
+	__le16 command;
+	__le16 status;
+	__le32 class_revision;
 	u8 cache_line_size;
 	u8 latency_timer;
 	u8 header_type;
 	u8 bist;
-	u32 bar[2];
+	__le32 bar[2];
 	u8 primary_bus;
 	u8 secondary_bus;
 	u8 subordinate_bus;
 	u8 secondary_latency_timer;
 	u8 iobase;
 	u8 iolimit;
-	u16 secondary_status;
-	u16 membase;
-	u16 memlimit;
-	u16 pref_mem_base;
-	u16 pref_mem_limit;
-	u32 prefbaseupper;
-	u32 preflimitupper;
-	u16 iobaseupper;
-	u16 iolimitupper;
+	__le16 secondary_status;
+	__le16 membase;
+	__le16 memlimit;
+	__le16 pref_mem_base;
+	__le16 pref_mem_limit;
+	__le32 prefbaseupper;
+	__le32 preflimitupper;
+	__le16 iobaseupper;
+	__le16 iolimitupper;
 	u8 capabilities_pointer;
 	u8 reserve[3];
-	u32 romaddr;
+	__le32 romaddr;
 	u8 intline;
 	u8 intpin;
-	u16 bridgectrl;
+	__le16 bridgectrl;
 };
 
 /* PCI configuration space of the PCIe capabilities */
 struct pci_bridge_emul_pcie_conf {
 	u8 cap_id;
 	u8 next;
-	u16 cap;
-	u32 devcap;
-	u16 devctl;
-	u16 devsta;
-	u32 lnkcap;
-	u16 lnkctl;
-	u16 lnksta;
-	u32 slotcap;
-	u16 slotctl;
-	u16 slotsta;
-	u16 rootctl;
-	u16 rsvd;
-	u32 rootsta;
-	u32 devcap2;
-	u16 devctl2;
-	u16 devsta2;
-	u32 lnkcap2;
-	u16 lnkctl2;
-	u16 lnksta2;
-	u32 slotcap2;
-	u16 slotctl2;
-	u16 slotsta2;
+	__le16 cap;
+	__le32 devcap;
+	__le16 devctl;
+	__le16 devsta;
+	__le32 lnkcap;
+	__le16 lnkctl;
+	__le16 lnksta;
+	__le32 slotcap;
+	__le16 slotctl;
+	__le16 slotsta;
+	__le16 rootctl;
+	__le16 rsvd;
+	__le32 rootsta;
+	__le32 devcap2;
+	__le16 devctl2;
+	__le16 devsta2;
+	__le32 lnkcap2;
+	__le16 lnkctl2;
+	__le16 lnksta2;
+	__le32 slotcap2;
+	__le16 slotctl2;
+	__le16 slotsta2;
 };
 
 struct pci_bridge_emul;