add missing files not taken with github import

2017-12-25 10:21:08 +01:00
parent c6de494f33
commit d6a9aa14e3
260 changed files with 75195 additions and 0 deletions
--- a/net/am79c874.c
+++ b/net/am79c874.c
@@ -0,0 +1,119 @@
+/*
+ * File:        am79c874.c
+ * Purpose:     Driver for the AMD AM79C874 10/100 Ethernet PHY
+ */
+
+#include "net.h"
+#include "fec.h"
+#include "am79c874.h"
+
+#include "bas_printf.h"
+
+#if defined(MACHINE_FIREBEE)
+#include "firebee.h"
+#elif defined(MACHINE_M5484LITE)
+#include "m5484l.h"
+#elif defined(MACHINE_M54455)
+#include "m54455.h"
+#else
+#error "unknown machine!"
+#endif
+
+#include <debug.h>
+// #define DEBUG
+
+/* Initialize the AM79C874 PHY
+ *
+ * This function sets up the Auto-Negotiate Advertisement register
+ * within the PHY and then forces the PHY to auto-negotiate for
+ * it's settings.
+ *
+ * Params:
+ *  fec_ch      FEC channel
+ *  phy_addr    Address of the PHY.
+ *  speed       Desired speed (10BaseT or 100BaseTX)
+ *  duplex      Desired duplex (Full or Half)
+ *
+ * Return Value:
+ *  0 if MII commands fail
+ *  1 otherwise
+ */
+int am79c874_init(uint8_t fec_ch, uint8_t phy_addr, uint8_t speed, uint8_t duplex)
+{
+    int timeout;
+    uint16_t settings;
+    if (speed); /* to do */
+    if (duplex); /* to do */
+
+    /* Initialize the MII interface */
+    fec_mii_init(fec_ch, SYSCLK / 1000);
+    dbg("%s: PHY reset\r\n", __FUNCTION__);
+
+    /* Reset the PHY */
+    if (!fec_mii_write(fec_ch, phy_addr, MII_AM79C874_CR, MII_AM79C874_CR_RESET))
+        return 0;
+
+    /* Wait for the PHY to reset */
+    for (timeout = 0; timeout < FEC_MII_TIMEOUT; timeout++)
+    {
+        fec_mii_read(fec_ch, phy_addr, MII_AM79C874_CR, &settings);
+        if (!(settings & MII_AM79C874_CR_RESET))
+            break;
+    }
+
+    if (timeout >= FEC_MII_TIMEOUT)
+    {
+        dbg("%s: PHY reset failed\r\n", __FUNCTION__);
+        return 0;
+    };
+    dbg("%s: PHY reset OK\r\n", __FUNCTION__);
+    dbg("%s: PHY Enable Auto-Negotiation\r\n", __FUNCTION__);
+
+    /* Enable Auto-Negotiation */
+    if (!fec_mii_write(fec_ch, phy_addr, MII_AM79C874_CR, MII_AM79C874_CR_AUTON | MII_AM79C874_CR_RST_NEG))
+        return 0;
+
+    dbg("%s:PHY Wait for auto-negotiation to complete\r\n", __FUNCTION__);
+
+    /* Wait for auto-negotiation to complete */
+    for (timeout = 0; timeout < FEC_MII_TIMEOUT; timeout++)
+    {
+        settings = 0;
+        fec_mii_read(fec_ch, phy_addr, MII_AM79C874_SR, &settings);
+        if ((settings & AUTONEGLINK) == AUTONEGLINK)
+            break;
+    }
+
+    if (timeout >= FEC_MII_TIMEOUT)
+    {
+        dbg("%s: Auto-negotiation failed (timeout). Set default mode (100Mbps, full duplex)\r\n", __FUNCTION__);
+
+        /* Set the default mode (Full duplex, 100 Mbps) */
+        if (!fec_mii_write(fec_ch, phy_addr, MII_AM79C874_CR, MII_AM79C874_CR_100MB | MII_AM79C874_CR_DPLX))
+        {
+            dbg("%s: forced setting 100Mbps/full failed.\r\n", __FUNCTION__);
+            return 0;
+        }
+    }
+
+#ifdef DBG_AM79
+    settings = 0;
+
+    fec_mii_read(fec_ch, phy_addr, MII_AM79C874_DR, &settings);
+
+    dbg("%s: PHY Mode:\r\n", __FUNCTION__);
+    if (settings & MII_AM79C874_DR_DATA_RATE)
+        dbg("%s: 100Mbps", __FUNCTION__);
+    else
+        dbg("%s: 10Mbps ", __FUNCTION__);
+
+    if (settings & MII_AM79C874_DR_DPLX)
+        dbg("%s: Full-duplex\r\n", __FUNCTION__);
+    else
+        dbg("%s: Half-duplex\r\n", __FUNCTION__);
+
+    dbg("%s:PHY auto-negotiation complete\r\n", __FUNCTION__);
+#endif /* DBG_AM79 */
+
+    return 1;
+}