net: smc911x: Add pkt_data_pull and pkt_data_push function

[oweals/u-boot.git] / drivers / net / smc911x.c

diff --git a/drivers/net/smc911x.c b/drivers/net/smc911x.c
index d22c8895da68a88f5470aa4080484fc6ad65817b..648c94cbbbbd8046631ad19bac80d6a54e019d2a 100644 (file)
--- a/drivers/net/smc911x.c
+++ b/drivers/net/smc911x.c
@@ -1,7 +1,7 @@
 /*
  * SMSC LAN9[12]1[567] Network driver
  *
- * (c) 2007 Pengutronix, Sascha Hauer <s.hauer <at> pengutronix.de>
+ * (c) 2007 Pengutronix, Sascha Hauer <s.hauer@pengutronix.de>
  *
  * See file CREDITS for list of people who contributed to this
  * project.
@@ -23,14 +23,17 @@
  */
 
 #include <common.h>
-
-#ifdef CONFIG_DRIVER_SMC911X
-
 #include <command.h>
 #include <net.h>
 #include <miiphy.h>
 
-#ifdef CONFIG_DRIVER_SMC911X_32_BIT
+#if defined (CONFIG_DRIVER_SMC911X_32_BIT) && \
+       defined (CONFIG_DRIVER_SMC911X_16_BIT)
+#error "SMC911X: Only one of CONFIG_DRIVER_SMC911X_32_BIT and \
+       CONFIG_DRIVER_SMC911X_16_BIT shall be set"
+#endif
+
+#if defined (CONFIG_DRIVER_SMC911X_32_BIT)
 static inline u32 reg_read(u32 addr)
 {
        return *(volatile u32*)addr;
@@ -39,9 +42,25 @@ static inline void reg_write(u32 addr, u32 val)
 {
        *(volatile u32*)addr = val;
 }
+#elif defined (CONFIG_DRIVER_SMC911X_16_BIT)
+static inline u32 reg_read(u32 addr)
+{
+       volatile u16 *addr_16 = (u16 *)addr;
+       return ((*addr_16 & 0x0000ffff) | (*(addr_16 + 1) << 16));
+}
+static inline void reg_write(u32 addr, u32 val)
+{
+       *(volatile u16*)addr = (u16)val;
+       *(volatile u16*)(addr + 2) = (u16)(val >> 16);
+}
 #else
-#error "SMC911X: Only 32-bit bus is supported"
-#endif
+#error "SMC911X: undefined bus width"
+#endif /* CONFIG_DRIVER_SMC911X_16_BIT */
+
+u32 pkt_data_pull(u32 addr) \
+       __attribute__ ((weak, alias ("reg_read")));
+void pkt_data_push(u32 addr, u32 val) \
+       __attribute__ ((weak, alias ("reg_write")));
 
 #define mdelay(n)       udelay((n)*1000)
 
@@ -79,7 +98,7 @@ static inline void reg_write(u32 addr, u32 val)
 #define        RX_STS_MII_ERR                          0x00000008
 #define        RX_STS_DRIBBLING                        0x00000004
 #define        RX_STS_CRC_ERR                          0x00000002
-#define RX_STATUS_FIFO_PEEK    (CONFIG_DRIVER_SMC911X_BASE + 0x44)
+#define RX_STATUS_FIFO_PEEK    (CONFIG_DRIVER_SMC911X_BASE + 0x44)
 #define TX_STATUS_FIFO         (CONFIG_DRIVER_SMC911X_BASE + 0x48)
 #define        TX_STS_TAG                              0xFFFF0000
 #define        TX_STS_ES                               0x00008000
@@ -196,9 +215,9 @@ static inline void reg_write(u32 addr, u32 val)
 #define        HW_CFG_TX_FIF_SZ                        0x000F0000  /* R/W */
 #define        HW_CFG_TR                               0x00003000  /* R/W */
 #define        HW_CFG_PHY_CLK_SEL                      0x00000060  /* R/W */
-#define        HW_CFG_PHY_CLK_SEL_INT_PHY              0x00000000 /* R/W */
-#define        HW_CFG_PHY_CLK_SEL_EXT_PHY              0x00000020 /* R/W */
-#define        HW_CFG_PHY_CLK_SEL_CLK_DIS              0x00000040 /* R/W */
+#define        HW_CFG_PHY_CLK_SEL_INT_PHY              0x00000000 /* R/W */
+#define        HW_CFG_PHY_CLK_SEL_EXT_PHY              0x00000020 /* R/W */
+#define        HW_CFG_PHY_CLK_SEL_CLK_DIS              0x00000040 /* R/W */
 #define        HW_CFG_SMI_SEL                          0x00000010  /* R/W */
 #define        HW_CFG_EXT_PHY_DET                      0x00000008  /* RO */
 #define        HW_CFG_EXT_PHY_EN                       0x00000004  /* R/W */
@@ -583,7 +602,7 @@ int eth_init(bd_t *bd)
 
        val = reg_read(BYTE_TEST);
        if (val != 0x87654321) {
-               printf(DRIVERNAME ": Invalid chip endian 0x08%x\n", val);
+               printf(DRIVERNAME ": Invalid chip endian 0x%08lx\n", val);
                goto err_out;
        }
 
@@ -592,7 +611,7 @@ int eth_init(bd_t *bd)
                if (chip_ids[i].id == val) break;
        }
        if (!chip_ids[i].id) {
-               printf(DRIVERNAME ": Unknown chip ID %04x\n", val);
+               printf(DRIVERNAME ": Unknown chip ID %04lx\n", val);
                goto err_out;
        }
 
@@ -627,7 +646,7 @@ int eth_send(volatile void *packet, int length)
        tmplen = (length + 3) / 4;
 
        while (tmplen--)
-               reg_write(TX_DATA_FIFO, *data++);
+               pkt_data_push(TX_DATA_FIFO, *data++);
 
        /* wait for transmission */
        while (!((reg_read(TX_FIFO_INF) & TX_FIFO_INF_TSUSED) >> 16));
@@ -670,7 +689,7 @@ int eth_rx(void)
 
                tmplen = (pktlen + 2+ 3) / 4;
                while (tmplen--)
-                       *data++ = reg_read(RX_DATA_FIFO);
+                       *data++ = pkt_data_pull(RX_DATA_FIFO);
 
                if (status & RX_STS_ES)
                        printf(DRIVERNAME
@@ -682,5 +701,3 @@ int eth_rx(void)
 
        return 0;
 }
-
-#endif                         /* CONFIG_DRIVER_SMC911X */