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@@ -0,0 +1,646 @@
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+/*
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+ * INCA-IP internal switch ethernet driver.
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+ *
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+ * (C) Copyright 2003
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+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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+ *
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+ * See file CREDITS for list of people who contributed to this
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+ * project.
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+ *
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+ * This program is free software; you can redistribute it and/or
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+ * modify it under the terms of the GNU General Public License as
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+ * published by the Free Software Foundation; either version 2 of
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+ * the License, or (at your option) any later version.
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+ *
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+ * This program is distributed in the hope that it will be useful,
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+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
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+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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+ * GNU General Public License for more details.
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+ *
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+ * You should have received a copy of the GNU General Public License
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+ * along with this program; if not, write to the Free Software
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+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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+ * MA 02111-1307 USA
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+ */
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+
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+
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+#include <common.h>
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+
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+#if (CONFIG_COMMANDS & CFG_CMD_NET) && defined(CONFIG_NET_MULTI) \
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+ && defined(CONFIG_INCA_IP_SWITCH)
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+
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+#include <malloc.h>
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+#include <net.h>
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+#include <asm/inca-ip.h>
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+#include <asm/addrspace.h>
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+
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+
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+#define NUM_RX_DESC PKTBUFSRX
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+#define NUM_TX_DESC 3
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+#define TOUT_LOOP 1000000
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+
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+
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+#define DELAY udelay(10000)
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+
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+#define DMA_WRITE_REG(reg, value) *((volatile u32 *)reg) = (u32)value;
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+#define DMA_READ_REG(reg, value) value = (u32)*((volatile u32*)reg)
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+#define SW_WRITE_REG(reg, value) \
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+ *((volatile u32*)reg) = (u32)value;\
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+ DELAY;\
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+ *((volatile u32*)reg) = (u32)value;
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+
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+#define SW_READ_REG(reg, value) \
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+ value = (u32)*((volatile u32*)reg);\
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+ DELAY;\
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+ value = (u32)*((volatile u32*)reg);
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+
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+#define INCA_DMA_TX_POLLING_TIME 0x07
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+#define INCA_DMA_RX_POLLING_TIME 0x07
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+
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+#define INCA_DMA_TX_HOLD 0x80000000
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+#define INCA_DMA_TX_EOP 0x40000000
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+#define INCA_DMA_TX_SOP 0x20000000
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+#define INCA_DMA_TX_ICPT 0x10000000
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+#define INCA_DMA_TX_IEOP 0x08000000
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+
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+#define INCA_DMA_RX_C 0x80000000
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+#define INCA_DMA_RX_SOP 0x40000000
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+#define INCA_DMA_RX_EOP 0x20000000
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+
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+
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+typedef struct
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+{
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+ union
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+ {
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+ struct
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+ {
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+ volatile u32 HOLD :1;
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+ volatile u32 ICpt :1;
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+ volatile u32 IEop :1;
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+ volatile u32 offset :3;
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+ volatile u32 reserved0 :4;
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+ volatile u32 NFB :22;
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+ }field;
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+
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+ volatile u32 word;
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+ }params;
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+
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+ volatile u32 nextRxDescPtr;
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+
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+ volatile u32 RxDataPtr;
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+
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+ union
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+ {
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+ struct
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+ {
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+ volatile u32 C :1;
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+ volatile u32 Sop :1;
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+ volatile u32 Eop :1;
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+ volatile u32 reserved3 :12;
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+ volatile u32 NBT :17;
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+ }field;
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+
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+ volatile u32 word;
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+ }status;
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+
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+} inca_rx_descriptor_t;
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+
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+
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+typedef struct
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+{
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+ union
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+ {
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+ struct
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+ {
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+ volatile u32 HOLD :1;
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+ volatile u32 Eop :1;
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+ volatile u32 Sop :1;
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+ volatile u32 ICpt :1;
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+ volatile u32 IEop :1;
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+ volatile u32 reserved0 :5;
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+ volatile u32 NBA :22;
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+ }field;
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+
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+ volatile u32 word;
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+ }params;
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+
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+ volatile u32 nextTxDescPtr;
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+
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+ volatile u32 TxDataPtr;
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+
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+ volatile u32 C :1;
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+ volatile u32 reserved3 :31;
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+
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+} inca_tx_descriptor_t;
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+
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+
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+static inca_rx_descriptor_t rx_ring[NUM_RX_DESC] __attribute__ ((aligned(16)));
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+static inca_tx_descriptor_t tx_ring[NUM_TX_DESC] __attribute__ ((aligned(16)));
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+
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+static int tx_new, rx_new, tx_hold, rx_hold;
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+static int tx_old_hold = -1;
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+static int initialized = 0;
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+
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+
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+static int inca_switch_init(struct eth_device *dev, bd_t * bis);
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+static int inca_switch_send(struct eth_device *dev, volatile void *packet,
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+ int length);
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+static int inca_switch_recv(struct eth_device *dev);
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+static void inca_switch_halt(struct eth_device *dev);
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+static void inca_init_switch_chip(void);
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+static void inca_dma_init(void);
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+
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+
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+
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+int inca_switch_initialize(bd_t * bis)
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+{
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+ struct eth_device *dev;
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+
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+#if 0
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+ printf("Entered inca_switch_initialize()\n");
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+#endif
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+
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+ if (!(dev = (struct eth_device *) malloc (sizeof *dev)))
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+ {
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+ printf("Failed to allocate memory\n");
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+ return 0;
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+ }
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+ memset(dev, 0, sizeof(*dev));
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+
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+ inca_dma_init();
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+
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+ inca_init_switch_chip();
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+
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+ sprintf(dev->name, "INCA-IP Switch");
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+ dev->init = inca_switch_init;
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+ dev->halt = inca_switch_halt;
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+ dev->send = inca_switch_send;
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+ dev->recv = inca_switch_recv;
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+
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+ eth_register(dev);
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+
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+#if 0
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+ printf("Leaving inca_switch_initialize()\n");
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+#endif
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+
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+ return 1;
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+}
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+
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+
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+static int inca_switch_init(struct eth_device *dev, bd_t * bis)
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+{
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+ int i;
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+ u32 v, regValue;
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+ u16 wTmp;
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+
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+#if 0
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+ printf("Entering inca_switch_init()\n");
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+#endif
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+
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+ /* Set MAC address.
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+ */
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+ wTmp = (u16)dev->enetaddr[0];
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+ regValue = (wTmp << 8) | dev->enetaddr[1];
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+
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+ SW_WRITE_REG(INCA_IP_Switch_PMAC_SA1, regValue);
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+
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+ wTmp = (u16)dev->enetaddr[2];
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+ regValue = (wTmp << 8) | dev->enetaddr[3];
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+ regValue = regValue << 16;
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+ wTmp = (u16)dev->enetaddr[4];
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+ regValue |= (wTmp<<8) | dev->enetaddr[5];
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+
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+ SW_WRITE_REG(INCA_IP_Switch_PMAC_SA2, regValue);
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+
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+ /* Initialize the descriptor rings.
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+ */
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+ for (i = 0; i < NUM_RX_DESC; i++)
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+ {
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+ inca_rx_descriptor_t * rx_desc = KSEG1ADDR(&rx_ring[i]);
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+ memset(rx_desc, 0, sizeof(rx_ring[i]));
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+
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+ /* Set maximum size of receive buffer.
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+ */
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+ rx_desc->params.field.NFB = PKTSIZE_ALIGN;
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+
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+ /* Set the offset of the receive buffer. Zero means
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+ * that the offset mechanism is not used.
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+ */
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+ rx_desc->params.field.offset = 0;
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+
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+ /* Check if it is the last descriptor.
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+ */
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+ if (i == (NUM_RX_DESC - 1))
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+ {
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+ /* Let the last descriptor point to the first
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+ * one.
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+ */
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+ rx_desc->nextRxDescPtr = KSEG1ADDR((u32)rx_ring);
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+ }
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+ else
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+ {
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+ /* Set the address of the next descriptor.
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+ */
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+ rx_desc->nextRxDescPtr = (u32)KSEG1ADDR(&rx_ring[i+1]);
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+ }
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+
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+ rx_desc->RxDataPtr = (u32)KSEG1ADDR(NetRxPackets[i]);
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+ }
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+
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+#if 0
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+ printf("rx_ring = 0x%08X 0x%08X\n", (u32)rx_ring, (u32)&rx_ring[0]);
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+ printf("tx_ring = 0x%08X 0x%08X\n", (u32)tx_ring, (u32)&tx_ring[0]);
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+#endif
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+
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+ for (i = 0; i < NUM_TX_DESC; i++)
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+ {
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+ inca_tx_descriptor_t * tx_desc = KSEG1ADDR(&tx_ring[i]);
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+
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+ memset(tx_desc, 0, sizeof(tx_ring[i]));
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+
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+ tx_desc->params.word = 0;
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+ tx_desc->params.field.HOLD = 1;
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+ tx_desc->C = 1;
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+
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+ /* Check if it is the last descriptor.
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+ */
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+ if (i == (NUM_TX_DESC - 1))
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+ {
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+ /* Let the last descriptor point to the
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+ * first one.
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+ */
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+ tx_desc->nextTxDescPtr = KSEG1ADDR((u32)tx_ring);
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+ }
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+ else
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+ {
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+ /* Set the address of the next descriptor.
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+ */
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+ tx_desc->nextTxDescPtr = (u32)KSEG1ADDR(&tx_ring[i+1]);
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+ }
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+ }
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+
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+ /* Initialize RxDMA.
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+ */
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+ DMA_READ_REG(INCA_IP_DMA_DMA_RXISR, v);
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+#if 0
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+ printf("RX status = 0x%08X\n", v);
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+#endif
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+
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+ /* Writing to the FRDA of CHANNEL.
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+ */
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+ DMA_WRITE_REG(INCA_IP_DMA_DMA_RXFRDA0, (u32)rx_ring);
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+
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+ /* Writing to the COMMAND REG.
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+ */
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+ DMA_WRITE_REG(INCA_IP_DMA_DMA_RXCCR0,
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+ INCA_IP_DMA_DMA_RXCCR0_INIT);
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+
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+ /* Initialize TxDMA.
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+ */
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+ DMA_READ_REG(INCA_IP_DMA_DMA_TXISR, v);
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+#if 0
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+ printf("TX status = 0x%08X\n", v);
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+#endif
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+
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+ /* Writing to the FRDA of CHANNEL.
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+ */
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+ DMA_WRITE_REG(INCA_IP_DMA_DMA_TXFRDA0, (u32)tx_ring);
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+
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+ tx_new = rx_new = 0;
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+
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+ tx_hold = NUM_TX_DESC - 1;
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+ rx_hold = NUM_RX_DESC - 1;
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+
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+#if 0
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+ rx_ring[rx_hold].params.field.HOLD = 1;
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+#endif
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+ /* enable spanning tree forwarding, enable the CPU port */
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+ /* ST_PT:
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+ CPS (CPU port status) 0x3 (forwarding)
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+ LPS (LAN port status) 0x3 (forwarding)
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+ PPS (PC port status) 0x3 (forwarding)
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+ */
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+ SW_WRITE_REG(INCA_IP_Switch_ST_PT,0x3f);
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+
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+#if 0
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+ printf("Leaving inca_switch_init()\n");
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+#endif
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+
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+ return 0;
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+}
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+
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+
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+static int inca_switch_send(struct eth_device *dev, volatile void *packet,
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+ int length)
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+{
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+ int i;
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+ int res = -1;
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+ u32 command;
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+ u32 regValue;
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+ inca_tx_descriptor_t * tx_desc = KSEG1ADDR(&tx_ring[tx_new]);
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+
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+#if 0
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+ printf("Entered inca_switch_send()\n");
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+#endif
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+
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+ if (length <= 0)
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+ {
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+ printf ("%s: bad packet size: %d\n", dev->name, length);
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+ goto Done;
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+ }
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+
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+ for(i = 0; tx_desc->C == 0; i++)
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+ {
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+ if (i >= TOUT_LOOP)
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+ {
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+ printf("%s: tx error buffer not ready\n", dev->name);
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+ goto Done;
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+ }
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+ }
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+
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+ if (tx_old_hold >= 0)
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+ {
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+ KSEG1ADDR(&tx_ring[tx_old_hold])->params.field.HOLD = 1;
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+ }
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+ tx_old_hold = tx_hold;
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+
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+ tx_desc->params.word =
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+ (INCA_DMA_TX_SOP | INCA_DMA_TX_EOP | INCA_DMA_TX_HOLD);
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+
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+ tx_desc->C = 0;
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+ tx_desc->TxDataPtr = (u32)packet;
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+ tx_desc->params.field.NBA = length;
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+
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+ KSEG1ADDR(&tx_ring[tx_hold])->params.field.HOLD = 0;
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+
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+ tx_hold = tx_new;
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+ tx_new = (tx_new + 1) % NUM_TX_DESC;
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+
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+
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+ if (! initialized)
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+ {
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+ command = INCA_IP_DMA_DMA_TXCCR0_INIT;
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+ initialized = 1;
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+ }
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+ else
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+ {
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+ command = INCA_IP_DMA_DMA_TXCCR0_HR;
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+ }
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+
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+ DMA_READ_REG(INCA_IP_DMA_DMA_TXCCR0, regValue);
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+ regValue |= command;
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+#if 0
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+ printf("regValue = 0x%x\n", regValue);
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+#endif
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+ DMA_WRITE_REG(INCA_IP_DMA_DMA_TXCCR0, regValue);
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+
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+#if 1
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+ for(i = 0; KSEG1ADDR(&tx_ring[tx_hold])->C == 0; i++)
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+ {
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+ if (i >= TOUT_LOOP)
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+ {
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+ printf("%s: tx buffer not ready\n", dev->name);
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+ goto Done;
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+ }
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+ }
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+#endif
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+ res = length;
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+Done:
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+#if 0
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+ printf("Leaving inca_switch_send()\n");
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+#endif
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+ return res;
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+}
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+
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+
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+static int inca_switch_recv(struct eth_device *dev)
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+{
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+ int length = 0;
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+ inca_rx_descriptor_t * rx_desc;
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+
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+#if 0
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+ printf("Entered inca_switch_recv()\n");
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+#endif
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+
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+ for (;;)
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+ {
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+ rx_desc = KSEG1ADDR(&rx_ring[rx_new]);
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+
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+ if (rx_desc->status.field.C == 0)
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|
|
+ {
|
|
|
+ break;
|
|
|
+ }
|
|
|
+
|
|
|
+#if 0
|
|
|
+ rx_ring[rx_new].params.field.HOLD = 1;
|
|
|
+#endif
|
|
|
+
|
|
|
+ if (! rx_desc->status.field.Eop)
|
|
|
+ {
|
|
|
+ printf("Partly received packet!!!\n");
|
|
|
+ break;
|
|
|
+ }
|
|
|
+
|
|
|
+ length = rx_desc->status.field.NBT;
|
|
|
+ rx_desc->status.word &=
|
|
|
+ ~(INCA_DMA_RX_EOP | INCA_DMA_RX_SOP | INCA_DMA_RX_C);
|
|
|
+#if 0
|
|
|
+{
|
|
|
+ int i;
|
|
|
+ for (i=0;i<length - 4;i++) {
|
|
|
+ if (i % 16 == 0) printf("\n%04x: ", i);
|
|
|
+ printf("%02X ", NetRxPackets[rx_new][i]);
|
|
|
+ }
|
|
|
+ printf("\n");
|
|
|
+}
|
|
|
+#endif
|
|
|
+
|
|
|
+ if (length)
|
|
|
+ {
|
|
|
+#if 0
|
|
|
+ printf("Received %d bytes\n", length);
|
|
|
+#endif
|
|
|
+ NetReceive((void*)KSEG1ADDR(NetRxPackets[rx_new]),
|
|
|
+ length - 4);
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+#if 1
|
|
|
+ printf("Zero length!!!\n");
|
|
|
+#endif
|
|
|
+ }
|
|
|
+
|
|
|
+
|
|
|
+ KSEG1ADDR(&rx_ring[rx_hold])->params.field.HOLD = 0;
|
|
|
+
|
|
|
+ rx_hold = rx_new;
|
|
|
+
|
|
|
+ rx_new = (rx_new + 1) % NUM_RX_DESC;
|
|
|
+ }
|
|
|
+
|
|
|
+#if 0
|
|
|
+ printf("Leaving inca_switch_recv()\n");
|
|
|
+#endif
|
|
|
+
|
|
|
+ return length;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+static void inca_switch_halt(struct eth_device *dev)
|
|
|
+{
|
|
|
+#if 0
|
|
|
+ printf("Entered inca_switch_halt()\n");
|
|
|
+#endif
|
|
|
+
|
|
|
+#if 1
|
|
|
+ initialized = 0;
|
|
|
+#endif
|
|
|
+#if 1
|
|
|
+ /* Disable forwarding to the CPU port.
|
|
|
+ */
|
|
|
+ SW_WRITE_REG(INCA_IP_Switch_ST_PT,0xf);
|
|
|
+
|
|
|
+ /* Close RxDMA channel.
|
|
|
+ */
|
|
|
+ DMA_WRITE_REG(INCA_IP_DMA_DMA_RXCCR0, INCA_IP_DMA_DMA_RXCCR0_OFF);
|
|
|
+
|
|
|
+ /* Close TxDMA channel.
|
|
|
+ */
|
|
|
+ DMA_WRITE_REG(INCA_IP_DMA_DMA_TXCCR0, INCA_IP_DMA_DMA_TXCCR0_OFF);
|
|
|
+
|
|
|
+
|
|
|
+#endif
|
|
|
+#if 0
|
|
|
+ printf("Leaving inca_switch_halt()\n");
|
|
|
+#endif
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+static void inca_init_switch_chip(void)
|
|
|
+{
|
|
|
+ u32 regValue;
|
|
|
+
|
|
|
+ /* To workaround a problem with collision counter
|
|
|
+ * (see Errata sheet).
|
|
|
+ */
|
|
|
+ SW_WRITE_REG(INCA_IP_Switch_PC_TX_CTL, 0x00000001);
|
|
|
+ SW_WRITE_REG(INCA_IP_Switch_LAN_TX_CTL, 0x00000001);
|
|
|
+
|
|
|
+#if 1
|
|
|
+ /* init MDIO configuration:
|
|
|
+ MDS (Poll speed): 0x01 (4ms)
|
|
|
+ PHY_LAN_ADDR: 0x06
|
|
|
+ PHY_PC_ADDR: 0x05
|
|
|
+ UEP (Use External PHY): 0x00 (Internal PHY is used)
|
|
|
+ PS (Port Select): 0x00 (PT/UMM for LAN)
|
|
|
+ PT (PHY Test): 0x00 (no test mode)
|
|
|
+ UMM (Use MDIO Mode): 0x00 (state machine is disabled)
|
|
|
+ */
|
|
|
+ SW_WRITE_REG(INCA_IP_Switch_MDIO_CFG, 0x4c50);
|
|
|
+
|
|
|
+ /* init PHY:
|
|
|
+ SL (Auto Neg. Speed for LAN)
|
|
|
+ SP (Auto Neg. Speed for PC)
|
|
|
+ LL (Link Status for LAN)
|
|
|
+ LP (Link Status for PC)
|
|
|
+ DL (Duplex Status for LAN)
|
|
|
+ DP (Duplex Status for PC)
|
|
|
+ PL (Auto Neg. Pause Status for LAN)
|
|
|
+ PP (Auto Neg. Pause Status for PC)
|
|
|
+ */
|
|
|
+ SW_WRITE_REG (INCA_IP_Switch_EPHY, 0xff);
|
|
|
+
|
|
|
+ /* MDIO_ACC:
|
|
|
+ RA (Request/Ack) 0x01 (Request)
|
|
|
+ RW (Read/Write) 0x01 (Write)
|
|
|
+ PHY_ADDR 0x05 (PC)
|
|
|
+ REG_ADDR 0x00 (PHY_BCR: basic control register)
|
|
|
+ PHY_DATA 0x8000
|
|
|
+ Reset - software reset
|
|
|
+ LB (loop back) - normal
|
|
|
+ SS (speed select) - 10 Mbit/s
|
|
|
+ ANE (auto neg. enable) - disable
|
|
|
+ PD (power down) - normal
|
|
|
+ ISO (isolate) - normal
|
|
|
+ RAN (restart auto neg.) - normal
|
|
|
+ DM (duplex mode) - half duplex
|
|
|
+ CT (collision test) - enable
|
|
|
+ */
|
|
|
+ SW_WRITE_REG(INCA_IP_Switch_MDIO_ACC, 0xc0a08000);
|
|
|
+
|
|
|
+ /* MDIO_ACC:
|
|
|
+ RA (Request/Ack) 0x01 (Request)
|
|
|
+ RW (Read/Write) 0x01 (Write)
|
|
|
+ PHY_ADDR 0x06 (LAN)
|
|
|
+ REG_ADDR 0x00 (PHY_BCR: basic control register)
|
|
|
+ PHY_DATA 0x8000
|
|
|
+ Reset - software reset
|
|
|
+ LB (loop back) - normal
|
|
|
+ SS (speed select) - 10 Mbit/s
|
|
|
+ ANE (auto neg. enable) - disable
|
|
|
+ PD (power down) - normal
|
|
|
+ ISO (isolate) - normal
|
|
|
+ RAN (restart auto neg.) - normal
|
|
|
+ DM (duplex mode) - half duplex
|
|
|
+ CT (collision test) - enable
|
|
|
+ */
|
|
|
+ SW_WRITE_REG(INCA_IP_Switch_MDIO_ACC, 0xc0c08000);
|
|
|
+#endif
|
|
|
+
|
|
|
+ /* Make sure the CPU port is disabled for now. We
|
|
|
+ * don't want packets to get stacked for us until
|
|
|
+ * we enable DMA and are prepared to receive them.
|
|
|
+ */
|
|
|
+ SW_WRITE_REG(INCA_IP_Switch_ST_PT,0xf);
|
|
|
+
|
|
|
+ SW_READ_REG(INCA_IP_Switch_ARL_CTL, regValue);
|
|
|
+
|
|
|
+ /* CRC GEN is enabled.
|
|
|
+ */
|
|
|
+ regValue |= 0x00000200;
|
|
|
+ SW_WRITE_REG(INCA_IP_Switch_ARL_CTL, regValue);
|
|
|
+
|
|
|
+ /* ADD TAG is disabled.
|
|
|
+ */
|
|
|
+ SW_READ_REG(INCA_IP_Switch_PMAC_HD_CTL, regValue);
|
|
|
+ regValue &= ~0x00000002;
|
|
|
+ SW_WRITE_REG(INCA_IP_Switch_PMAC_HD_CTL, regValue);
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+static void inca_dma_init(void)
|
|
|
+{
|
|
|
+ /* Switch off all DMA channels.
|
|
|
+ */
|
|
|
+ DMA_WRITE_REG(INCA_IP_DMA_DMA_RXCCR0, INCA_IP_DMA_DMA_RXCCR0_OFF);
|
|
|
+ DMA_WRITE_REG(INCA_IP_DMA_DMA_RXCCR1, INCA_IP_DMA_DMA_RXCCR1_OFF);
|
|
|
+
|
|
|
+ DMA_WRITE_REG(INCA_IP_DMA_DMA_TXCCR0, INCA_IP_DMA_DMA_RXCCR0_OFF);
|
|
|
+ DMA_WRITE_REG(INCA_IP_DMA_DMA_TXCCR1, INCA_IP_DMA_DMA_TXCCR1_OFF);
|
|
|
+ DMA_WRITE_REG(INCA_IP_DMA_DMA_TXCCR2, INCA_IP_DMA_DMA_TXCCR2_OFF);
|
|
|
+
|
|
|
+ /* Setup TX channel polling time.
|
|
|
+ */
|
|
|
+ DMA_WRITE_REG(INCA_IP_DMA_DMA_TXPOLL, INCA_DMA_TX_POLLING_TIME);
|
|
|
+
|
|
|
+ /* Setup RX channel polling time.
|
|
|
+ */
|
|
|
+ DMA_WRITE_REG(INCA_IP_DMA_DMA_RXPOLL, INCA_DMA_RX_POLLING_TIME);
|
|
|
+
|
|
|
+ /* ERRATA: write reset value into the DMA RX IMR register.
|
|
|
+ */
|
|
|
+ DMA_WRITE_REG(INCA_IP_DMA_DMA_RXIMR, 0xFFFFFFFF);
|
|
|
+
|
|
|
+ /* Just in case: disable all transmit interrupts also.
|
|
|
+ */
|
|
|
+ DMA_WRITE_REG(INCA_IP_DMA_DMA_TXIMR, 0xFFFFFFFF);
|
|
|
+
|
|
|
+ DMA_WRITE_REG(INCA_IP_DMA_DMA_TXISR, 0xFFFFFFFF);
|
|
|
+ DMA_WRITE_REG(INCA_IP_DMA_DMA_RXISR, 0xFFFFFFFF);
|
|
|
+}
|
|
|
+
|
|
|
+#endif
|
|
|
+
|
|
|
+ /* End of file.
|
|
|
+ */
|
|
|
+
|