Synced up the EF1 initialisation sequence with changes in the Linux

driver.

diff --git a/src/drivers/net/etherfabric.c b/src/drivers/net/etherfabric.c
index b0f492e..5ec9abf 100644 (file)
--- a/src/drivers/net/etherfabric.c
+++ b/src/drivers/net/etherfabric.c
@@ -983,14 +983,26 @@ static int mentormac_mdio_read ( struct efab_nic *efab, int phy_id,
 #define EF1_EVT3_REG 0x38
 
 /** EEPROM access */
-#define EF1_EEPROM_REG 0x0040
+#define EF1_EEPROM_REG 0x40
+#define EF1_EEPROM_SDA_LBN 31
+#define EF1_EEPROM_SDA_WIDTH 1
+#define EF1_EEPROM_SCL_LBN 30
+#define EF1_EEPROM_SCL_WIDTH 1
+#define EF1_JTAG_DISCONNECT_LBN 17
+#define EF1_JTAG_DISCONNECT_WIDTH 1
 
 /** Control register 2 */
 #define EF1_CTL2_REG 0x4c
+#define EF1_PLL_TRAP_LBN 31
+#define EF1_PLL_TRAP_WIDTH 1
 #define EF1_MEM_MAP_4MB_LBN 11
 #define EF1_MEM_MAP_4MB_WIDTH 1
 #define EF1_EV_INTR_CLR_WRITE_LBN 6
 #define EF1_EV_INTR_CLR_WRITE_WIDTH 1
+#define EF1_BURST_MERGE_LBN 5
+#define EF1_BURST_MERGE_WIDTH 1
+#define EF1_CLEAR_NULL_PAD_LBN 4
+#define EF1_CLEAR_NULL_PAD_WIDTH 1
 #define EF1_SW_RESET_LBN 2
 #define EF1_SW_RESET_WIDTH 1
 #define EF1_INTR_AFTER_EVENT_LBN 1
@@ -1244,15 +1256,20 @@ static int ef1002_init_nic ( struct efab_nic *efab ) {
        /* General control register 0 */
        ef1002_readl ( efab, &reg, EF1_CTR_GEN_STATUS0_REG );
        EFAB_SET_DWORD_FIELD ( reg, EF1_MASTER_EVENTS, 0 );
+       EFAB_SET_DWORD_FIELD ( reg, EF1_TX_ENGINE_EN, 0 );
+       EFAB_SET_DWORD_FIELD ( reg, EF1_RX_ENGINE_EN, 0 );
        EFAB_SET_DWORD_FIELD ( reg, EF1_CAM_ENABLE, 1 );
        ef1002_writel ( efab, &reg, EF1_CTR_GEN_STATUS0_REG );
        udelay ( 1000 );
 
        /* General control register 2 */
        ef1002_readl ( efab, &reg, EF1_CTL2_REG );
-       EFAB_SET_DWORD_FIELD ( reg, EF1_INTR_AFTER_EVENT, 1 );
-       EFAB_SET_DWORD_FIELD ( reg, EF1_EV_INTR_CLR_WRITE, 0 );
+       EFAB_SET_DWORD_FIELD ( reg, EF1_PLL_TRAP, 1 );
        EFAB_SET_DWORD_FIELD ( reg, EF1_MEM_MAP_4MB, 0 );
+       EFAB_SET_DWORD_FIELD ( reg, EF1_EV_INTR_CLR_WRITE, 0 );
+       EFAB_SET_DWORD_FIELD ( reg, EF1_BURST_MERGE, 0 );
+       EFAB_SET_DWORD_FIELD ( reg, EF1_CLEAR_NULL_PAD, 1 );
+       EFAB_SET_DWORD_FIELD ( reg, EF1_INTR_AFTER_EVENT, 1 );
        ef1002_writel ( efab, &reg, EF1_CTL2_REG );
        udelay ( 1000 );
 
@@ -1272,6 +1289,17 @@ static int ef1002_init_nic ( struct efab_nic *efab ) {
        ef1002_writel ( efab, &reg, EF1_DMA_TX_CSR_REG );
        udelay ( 1000 );
 
+       /* Disconnect the JTAG chain.  Read-modify-write is impossible
+        * on the I2C control bits, since reading gives the state of
+        * the line inputs rather than the last written state.
+        */
+       ef1002_readl ( efab, &reg, EF1_EEPROM_REG );
+       EFAB_SET_DWORD_FIELD ( reg, EF1_EEPROM_SDA, 1 );
+       EFAB_SET_DWORD_FIELD ( reg, EF1_EEPROM_SCL, 1 );
+       EFAB_SET_DWORD_FIELD ( reg, EF1_JTAG_DISCONNECT, 1 );
+       ef1002_writel ( efab, &reg, EF1_EEPROM_REG );
+       udelay ( 10 );
+
        /* Flush descriptor queues */
        EFAB_ZERO_DWORD ( reg );
        ef1002_writel ( efab, &reg, EF1_RX_DESC_FIFO_FLUSH );