net: fec: make driver endian-safe

[sfrench/cifs-2.6.git] / drivers / net / ethernet / freescale / fec.h

diff --git a/drivers/net/ethernet/freescale/fec.h b/drivers/net/ethernet/freescale/fec.h
index 99d33e2d35e6c2c219fbd06f34546619a01a586d..7dd47a0b8cfb538856995269506a1d68a6db8fbf 100644 (file)
--- a/drivers/net/ethernet/freescale/fec.h
+++ b/drivers/net/ethernet/freescale/fec.h
@@ -190,28 +190,46 @@
 
 /*
  *     Define the buffer descriptor structure.
+ *
+ *     Evidently, ARM SoCs have the FEC block generated in a
+ *     little endian mode; or at least ARCH_MXC/SOC_IMX28 do,
+ *     so adjust endianness accordingly.
  */
 #if defined(CONFIG_ARCH_MXC) || defined(CONFIG_SOC_IMX28)
+#define fec32_to_cpu le32_to_cpu
+#define fec16_to_cpu le16_to_cpu
+#define cpu_to_fec32 cpu_to_le32
+#define cpu_to_fec16 cpu_to_le16
+#define __fec32 __le32
+#define __fec16 __le16
+
 struct bufdesc {
-       unsigned short cbd_datlen;      /* Data length */
-       unsigned short cbd_sc;  /* Control and status info */
-       unsigned long cbd_bufaddr;      /* Buffer address */
+       __fec16 cbd_datlen;     /* Data length */
+       __fec16 cbd_sc;         /* Control and status info */
+       __fec32 cbd_bufaddr;    /* Buffer address */
 };
 #else
+#define fec32_to_cpu be32_to_cpu
+#define fec16_to_cpu be16_to_cpu
+#define cpu_to_fec32 cpu_to_be32
+#define cpu_to_fec16 cpu_to_be16
+#define __fec32 __be32
+#define __fec16 __be16
+
 struct bufdesc {
-       unsigned short  cbd_sc;                 /* Control and status info */
-       unsigned short  cbd_datlen;             /* Data length */
-       unsigned long   cbd_bufaddr;            /* Buffer address */
+       __fec16 cbd_sc;         /* Control and status info */
+       __fec16 cbd_datlen;     /* Data length */
+       __fec32 cbd_bufaddr;    /* Buffer address */
 };
 #endif
 
 struct bufdesc_ex {
        struct bufdesc desc;
-       unsigned long cbd_esc;
-       unsigned long cbd_prot;
-       unsigned long cbd_bdu;
-       unsigned long ts;
-       unsigned short res0[4];
+       __fec32 cbd_esc;
+       __fec32 cbd_prot;
+       __fec32 cbd_bdu;
+       __fec32 ts;
+       __fec16 res0[4];
 };
 
 /*