Tundra tsi108 on chip Ethernet controller support
Signed-off-by: Alexandre Bounine <alexandreb(a)tundra.com>
Signed-off-by: Roy Zang <tie-fei.zang(a)freescale.com>
---
board/mpc7448hpc2/tsi108_eth.c | 1042
++++++++++++++++++++++++++++++++++++++++
1 files changed, 1042 insertions(+), 0 deletions(-)
diff --git a/board/mpc7448hpc2/tsi108_eth.c
b/board/mpc7448hpc2/tsi108_eth.c
new file mode 100644
index 0000000..196c4b4
--- /dev/null
+++ b/board/mpc7448hpc2/tsi108_eth.c
@@ -0,0 +1,1042 @@
+/**********************************************************************
*
+ *
+ * Copyright (c) 2005 Freescale Semiconductor, Inc.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ *
+ * Description:
+ * Ethernet interface for Tundra TSI108 bridge chip
+ *
+
***********************************************************************/
+
+#include <common.h>
+
+#if (CONFIG_COMMANDS & CFG_CMD_NET) && defined(CONFIG_NET_MULTI) \
+ && defined(CONFIG_TSI108_ETH)
+
+#if !defined(CONFIG_TSI108_ETH_NUM_PORTS) ||
(CONFIG_TSI108_ETH_NUM_PORTS > 2)
+#error "CONFIG_TSI108_ETH_NUM_PORTS must be defined as 1 or 2"
+#endif
+
+#include <malloc.h>
+#include <net.h>
+#include <asm/cache.h>
+
+#ifdef DEBUG
+#define TSI108_ETH_DEBUG 7
+#else
+#define TSI108_ETH_DEBUG 0
+#endif
+
+#if TSI108_ETH_DEBUG > 0
+#define debug_lev(lev, fmt, args...) if (lev <= TSI108_ETH_DEBUG)
printf("%s %d: " fmt, __FUNCTION__, __LINE__, ##args)
+#else
+#define debug_lev(lev, fmt, args...) do{}while(0)
+#endif
+
+#define RX_PRINT_ERRORS
+#define TX_PRINT_ERRORS
+
+#define ETH_BASE (CFG_TSI108_CSR_BASE + 0x6000)
+
+#define ETH_PORT_OFFSET 0x400
+
+#define __REG32(base, offset) (*((volatile u32 *)((char *)(base) +
(offset))))
+
+#define reg_MAC_CONFIG_1(base) __REG32(base,
0x00000000)
+#define MAC_CONFIG_1_TX_ENABLE (0x00000001)
+#define MAC_CONFIG_1_SYNC_TX_ENABLE (0x00000002)
+#define MAC_CONFIG_1_RX_ENABLE (0x00000004)
+#define MAC_CONFIG_1_SYNC_RX_ENABLE (0x00000008)
+#define MAC_CONFIG_1_TX_FLOW_CONTROL (0x00000010)
+#define MAC_CONFIG_1_RX_FLOW_CONTROL (0x00000020)
+#define MAC_CONFIG_1_LOOP_BACK (0x00000100)
+#define MAC_CONFIG_1_RESET_TX_FUNCTION (0x00010000)
+#define MAC_CONFIG_1_RESET_RX_FUNCTION (0x00020000)
+#define MAC_CONFIG_1_RESET_TX_MAC (0x00040000)
+#define MAC_CONFIG_1_RESET_RX_MAC (0x00080000)
+#define MAC_CONFIG_1_SIM_RESET (0x40000000)
+#define MAC_CONFIG_1_SOFT_RESET (0x80000000)
+
+#define reg_MAC_CONFIG_2(base) __REG32(base,
0x00000004)
+#define MAC_CONFIG_2_FULL_DUPLEX (0x00000001)
+#define MAC_CONFIG_2_CRC_ENABLE (0x00000002)
+#define MAC_CONFIG_2_PAD_CRC (0x00000004)
+#define MAC_CONFIG_2_LENGTH_CHECK (0x00000010)
+#define MAC_CONFIG_2_HUGE_FRAME (0x00000020)
+#define MAC_CONFIG_2_INTERFACE_MODE(val) (((val) & 0x3) << 8)
+#define MAC_CONFIG_2_PREAMBLE_LENGTH(val) (((val) & 0xf) << 12)
+#define INTERFACE_MODE_NIBBLE 1 /* 10/100 Mb/s MII) */
+#define INTERFACE_MODE_BYTE 2 /* 1000 Mb/s GMII/TBI */
+
+#define reg_MAXIMUM_FRAME_LENGTH(base) __REG32(base,
0x00000010)
+
+#define reg_MII_MGMT_CONFIG(base) __REG32(base,
0x00000020)
+#define MII_MGMT_CONFIG_MGMT_CLOCK_SELECT(val) ((val) & 0x7)
+#define MII_MGMT_CONFIG_NO_PREAMBLE (0x00000010)
+#define MII_MGMT_CONFIG_SCAN_INCREMENT (0x00000020)
+#define MII_MGMT_CONFIG_RESET_MGMT (0x80000000)
+
+#define reg_MII_MGMT_COMMAND(base) __REG32(base,
0x00000024)
+#define MII_MGMT_COMMAND_READ_CYCLE (0x00000001)
+#define MII_MGMT_COMMAND_SCAN_CYCLE (0x00000002)
+
+#define reg_MII_MGMT_ADDRESS(base) __REG32(base,
0x00000028)
+#define reg_MII_MGMT_CONTROL(base) __REG32(base,
0x0000002c)
+#define reg_MII_MGMT_STATUS(base) __REG32(base,
0x00000030)
+
+#define reg_MII_MGMT_INDICATORS(base) __REG32(base,
0x00000034)
+#define MII_MGMT_INDICATORS_BUSY (0x00000001)
+#define MII_MGMT_INDICATORS_SCAN (0x00000002)
+#define MII_MGMT_INDICATORS_NOT_VALID (0x00000004)
+
+#define reg_INTERFACE_STATUS(base) __REG32(base,
0x0000003c)
+#define INTERFACE_STATUS_LINK_FAIL (0x00000008)
+#define INTERFACE_STATUS_EXCESS_DEFER (0x00000200)
+
+#define reg_STATION_ADDRESS_1(base) __REG32(base,
0x00000040)
+#define reg_STATION_ADDRESS_2(base) __REG32(base,
0x00000044)
+
+#define reg_PORT_CONTROL(base) __REG32(base,
0x00000200)
+#define PORT_CONTROL_PRI (0x00000001)
+#define PORT_CONTROL_BPT (0x00010000)
+#define PORT_CONTROL_SPD (0x00040000)
+#define PORT_CONTROL_RBC (0x00080000)
+#define PORT_CONTROL_PRB (0x00200000)
+#define PORT_CONTROL_DIS (0x00400000)
+#define PORT_CONTROL_TBI (0x00800000)
+#define PORT_CONTROL_STE (0x10000000)
+#define PORT_CONTROL_ZOR (0x20000000)
+#define PORT_CONTROL_CLR (0x40000000)
+#define PORT_CONTROL_SRT (0x80000000)
+
+#define reg_TX_CONFIG(base) __REG32(base,
0x00000220)
+#define TX_CONFIG_START_Q (0x00000003)
+#define TX_CONFIG_EHP (0x00400000)
+#define TX_CONFIG_CHP (0x00800000)
+#define TX_CONFIG_RST (0x80000000)
+
+#define reg_TX_CONTROL(base) __REG32(base,
0x00000224)
+#define TX_CONTROL_GO (0x00008000)
+#define TX_CONTROL_MP (0x01000000)
+#define TX_CONTROL_EAI (0x20000000)
+#define TX_CONTROL_ABT (0x40000000)
+#define TX_CONTROL_EII (0x80000000)
+
+#define reg_TX_STATUS(base) __REG32(base,
0x00000228)
+#define TX_STATUS_QUEUE_USABLE (0x0000000f)
+#define TX_STATUS_CURR_Q (0x00000300)
+#define TX_STATUS_ACT (0x00008000)
+#define TX_STATUS_QUEUE_IDLE (0x000f0000)
+#define TX_STATUS_EOQ_PENDING (0x0f000000)
+
+#define reg_TX_EXTENDED_STATUS(base) __REG32(base,
0x0000022c)
+#define TX_EXTENDED_STATUS_END_OF_QUEUE_CONDITION (0x0000000f)
+#define TX_EXTENDED_STATUS_END_OF_FRAME_CONDITION (0x00000f00)
+#define TX_EXTENDED_STATUS_DESCRIPTOR_INTERRUPT_CONDITION (0x000f0000)
+#define TX_EXTENDED_STATUS_ERROR_FLAG (0x0f000000)
+
+#define reg_TX_THRESHOLDS(base) __REG32(base,
0x00000230)
+
+#define reg_TX_DIAGNOSTIC_ADDR(base) __REG32(base,
0x00000270)
+#define TX_DIAGNOSTIC_ADDR_INDEX (0x0000007f)
+#define TX_DIAGNOSTIC_ADDR_DFR (0x40000000)
+#define TX_DIAGNOSTIC_ADDR_AI (0x80000000)
+
+#define reg_TX_DIAGNOSTIC_DATA(base) __REG32(base,
0x00000274)
+
+#define reg_TX_ERROR_STATUS(base) __REG32(base,
0x00000278)
+#define TX_ERROR_STATUS (0x00000278)
+#define TX_ERROR_STATUS_QUEUE_0_ERROR_RESPONSE (0x0000000f)
+#define TX_ERROR_STATUS_TEA_ON_QUEUE_0 (0x00000010)
+#define TX_ERROR_STATUS_RER_ON_QUEUE_0 (0x00000020)
+#define TX_ERROR_STATUS_TER_ON_QUEUE_0 (0x00000040)
+#define TX_ERROR_STATUS_DER_ON_QUEUE_0 (0x00000080)
+#define TX_ERROR_STATUS_QUEUE_1_ERROR_RESPONSE (0x00000f00)
+#define TX_ERROR_STATUS_TEA_ON_QUEUE_1 (0x00001000)
+#define TX_ERROR_STATUS_RER_ON_QUEUE_1 (0x00002000)
+#define TX_ERROR_STATUS_TER_ON_QUEUE_1 (0x00004000)
+#define TX_ERROR_STATUS_DER_ON_QUEUE_1 (0x00008000)
+#define TX_ERROR_STATUS_QUEUE_2_ERROR_RESPONSE (0x000f0000)
+#define TX_ERROR_STATUS_TEA_ON_QUEUE_2 (0x00100000)
+#define TX_ERROR_STATUS_RER_ON_QUEUE_2 (0x00200000)
+#define TX_ERROR_STATUS_TER_ON_QUEUE_2 (0x00400000)
+#define TX_ERROR_STATUS_DER_ON_QUEUE_2 (0x00800000)
+#define TX_ERROR_STATUS_QUEUE_3_ERROR_RESPONSE (0x0f000000)
+#define TX_ERROR_STATUS_TEA_ON_QUEUE_3 (0x10000000)
+#define TX_ERROR_STATUS_RER_ON_QUEUE_3 (0x20000000)
+#define TX_ERROR_STATUS_TER_ON_QUEUE_3 (0x40000000)
+#define TX_ERROR_STATUS_DER_ON_QUEUE_3 (0x80000000)
+
+#define reg_TX_QUEUE_0_CONFIG(base) __REG32(base,
0x00000280)
+#define TX_QUEUE_0_CONFIG_OCN_PORT (0x0000003f)
+#define TX_QUEUE_0_CONFIG_BSWP (0x00000400)
+#define TX_QUEUE_0_CONFIG_WSWP (0x00000800)
+#define TX_QUEUE_0_CONFIG_AM (0x00004000)
+#define TX_QUEUE_0_CONFIG_GVI (0x00008000)
+#define TX_QUEUE_0_CONFIG_EEI (0x00010000)
+#define TX_QUEUE_0_CONFIG_ELI (0x00020000)
+#define TX_QUEUE_0_CONFIG_ENI (0x00040000)
+#define TX_QUEUE_0_CONFIG_ESI (0x00080000)
+#define TX_QUEUE_0_CONFIG_EDI (0x00100000)
+
+#define reg_TX_QUEUE_0_BUF_CONFIG(base) __REG32(base,
0x00000284)
+#define TX_QUEUE_0_BUF_CONFIG_OCN_PORT (0x0000003f)
+#define TX_QUEUE_0_BUF_CONFIG_BURST (0x00000300)
+#define TX_QUEUE_0_BUF_CONFIG_BSWP (0x00000400)
+#define TX_QUEUE_0_BUF_CONFIG_WSWP (0x00000800)
+
+#define OCN_PORT_HLP 0 /* HLP Interface */
+#define OCN_PORT_PCI_X 1 /* PCI-X Interface */
+#define OCN_PORT_PROCESSOR_MASTER 2 /* Processor Interface
(master) */
+#define OCN_PORT_PROCESSOR_SLAVE 3 /* Processor Interface
(slave) */
+#define OCN_PORT_MEMORY 4 /* Memory Controller */
+#define OCN_PORT_DMA 5 /* DMA Controller */
+#define OCN_PORT_ETHERNET 6 /* Ethernet Controller
*/
+#define OCN_PORT_PRINT 7 /* Print Engine
Interface */
+
+#define reg_TX_QUEUE_0_PTR_LOW(base) __REG32(base,
0x00000288)
+
+#define reg_TX_QUEUE_0_PTR_HIGH(base) __REG32(base,
0x0000028c)
+#define TX_QUEUE_0_PTR_HIGH_VALID (0x80000000)
+
+#define reg_RX_CONFIG(base) __REG32(base,
0x00000320)
+#define RX_CONFIG_DEF_Q (0x00000003)
+#define RX_CONFIG_EMF (0x00000100)
+#define RX_CONFIG_EUF (0x00000200)
+#define RX_CONFIG_BFE (0x00000400)
+#define RX_CONFIG_MFE (0x00000800)
+#define RX_CONFIG_UFE (0x00001000)
+#define RX_CONFIG_SE (0x00002000)
+#define RX_CONFIG_ABF (0x00200000)
+#define RX_CONFIG_APE (0x00400000)
+#define RX_CONFIG_CHP (0x00800000)
+#define RX_CONFIG_RST (0x80000000)
+
+#define reg_RX_CONTROL(base) __REG32(base,
0x00000324)
+#define GE_E0_RX_CONTROL_QUEUE_ENABLES (0x0000000f)
+#define GE_E0_RX_CONTROL_GO (0x00008000)
+#define GE_E0_RX_CONTROL_EAI (0x20000000)
+#define GE_E0_RX_CONTROL_ABT (0x40000000)
+#define GE_E0_RX_CONTROL_EII (0x80000000)
+
+#define reg_RX_EXTENDED_STATUS(base) __REG32(base,
0x0000032c)
+#define RX_EXTENDED_STATUS (0x0000032c)
+#define RX_EXTENDED_STATUS_EOQ (0x0000000f)
+#define RX_EXTENDED_STATUS_EOQ_0 (0x00000001)
+#define RX_EXTENDED_STATUS_EOF (0x00000f00)
+#define RX_EXTENDED_STATUS_DESCRIPTOR_INTERRUPT_CONDITION (0x000f0000)
+#define RX_EXTENDED_STATUS_ERROR_FLAG (0x0f000000)
+
+#define reg_RX_THRESHOLDS(base) __REG32(base,
0x00000330)
+
+#define reg_RX_DIAGNOSTIC_ADDR(base) __REG32(base,
0x00000370)
+#define RX_DIAGNOSTIC_ADDR_INDEX (0x0000007f)
+#define RX_DIAGNOSTIC_ADDR_DFR (0x40000000)
+#define RX_DIAGNOSTIC_ADDR_AI (0x80000000)
+
+#define reg_RX_DIAGNOSTIC_DATA(base) __REG32(base,
0x00000374)
+
+#define reg_RX_QUEUE_0_CONFIG(base) __REG32(base,
0x00000380)
+#define RX_QUEUE_0_CONFIG_OCN_PORT (0x0000003f)
+#define RX_QUEUE_0_CONFIG_BSWP (0x00000400)
+#define RX_QUEUE_0_CONFIG_WSWP (0x00000800)
+#define RX_QUEUE_0_CONFIG_AM (0x00004000)
+#define RX_QUEUE_0_CONFIG_EEI (0x00010000)
+#define RX_QUEUE_0_CONFIG_ELI (0x00020000)
+#define RX_QUEUE_0_CONFIG_ENI (0x00040000)
+#define RX_QUEUE_0_CONFIG_ESI (0x00080000)
+#define RX_QUEUE_0_CONFIG_EDI (0x00100000)
+
+#define reg_RX_QUEUE_0_BUF_CONFIG(base) __REG32(base, 0x00000384)
+#define RX_QUEUE_0_BUF_CONFIG_OCN_PORT (0x0000003f)
+#define RX_QUEUE_0_BUF_CONFIG_BURST (0x00000300)
+#define RX_QUEUE_0_BUF_CONFIG_BSWP (0x00000400)
+#define RX_QUEUE_0_BUF_CONFIG_WSWP (0x00000800)
+
+#define reg_RX_QUEUE_0_PTR_LOW(base) __REG32(base,
0x00000388)
+
+#define reg_RX_QUEUE_0_PTR_HIGH(base) __REG32(base,
0x0000038c)
+#define RX_QUEUE_0_PTR_HIGH_VALID (0x80000000)
+
+/*
+ * PHY register definitions
+ */
+/* the first 15 PHY registers are standard. */
+#define PHY_CTRL_REG 0 /* Control Register */
+#define PHY_STATUS_REG 1 /* Status Regiser */
+#define PHY_ID1_REG 2 /* Phy Id Reg (word 1) */
+#define PHY_ID2_REG 3 /* Phy Id Reg (word 2) */
+#define PHY_AN_ADV_REG 4 /* Autoneg Advertisement */
+#define PHY_LP_ABILITY_REG 5 /* Link Partner Ability (Base
Page) */
+#define PHY_AUTONEG_EXP_REG 6 /* Autoneg Expansion Reg */
+#define PHY_NEXT_PAGE_TX_REG 7 /* Next Page TX */
+#define PHY_LP_NEXT_PAGE_REG 8 /* Link Partner Next Page */
+#define PHY_1000T_CTRL_REG 9 /* 1000Base-T Control Reg */
+#define PHY_1000T_STATUS_REG 10 /* 1000Base-T Status Reg */
+#define PHY_EXT_STATUS_REG 11 /* Extended Status Reg */
+
+/*
+ * PHY Register bit masks.
+ */
+#define PHY_CTRL_RESET (1 << 15)
+#define PHY_CTRL_LOOPBACK (1 << 14)
+#define PHY_CTRL_SPEED0 (1 << 13)
+#define PHY_CTRL_AN_EN (1 << 12)
+#define PHY_CTRL_PWR_DN (1 << 11)
+#define PHY_CTRL_ISOLATE (1 << 10)
+#define PHY_CTRL_RESTART_AN (1 << 9)
+#define PHY_CTRL_FULL_DUPLEX (1 << 8)
+#define PHY_CTRL_CT_EN (1 << 7)
+#define PHY_CTRL_SPEED1 (1 << 6)
+
+#define PHY_STAT_100BASE_T4 (1 << 15)
+#define PHY_STAT_100BASE_X_FD (1 << 14)
+#define PHY_STAT_100BASE_X_HD (1 << 13)
+#define PHY_STAT_10BASE_T_FD (1 << 12)
+#define PHY_STAT_10BASE_T_HD (1 << 11)
+#define PHY_STAT_100BASE_T2_FD (1 << 10)
+#define PHY_STAT_100BASE_T2_HD (1 << 9)
+#define PHY_STAT_EXT_STAT (1 << 8)
+#define PHY_STAT_RESERVED (1 << 7)
+#define PHY_STAT_MFPS (1 << 6) /* Management Frames
Preamble Suppression */
+#define PHY_STAT_AN_COMPLETE (1 << 5)
+#define PHY_STAT_REM_FAULT (1 << 4)
+#define PHY_STAT_AN_CAP (1 << 3)
+#define PHY_STAT_LINK_UP (1 << 2)
+#define PHY_STAT_JABBER (1 << 1)
+#define PHY_STAT_EXT_CAP (1 << 0)
+
+#define TBI_CONTROL_2 0x11
+#define TBI_CONTROL_2_ENABLE_COMMA_DETECT 0x0001
+#define TBI_CONTROL_2_ENABLE_WRAP 0x0002
+#define TBI_CONTROL_2_G_MII_MODE 0x0010
+#define TBI_CONTROL_2_RECEIVE_CLOCK_SELECT 0x0020
+#define TBI_CONTROL_2_AUTO_NEGOTIATION_SENSE 0x0100
+#define TBI_CONTROL_2_DISABLE_TRANSMIT_RUNNING_DISPARITY 0x1000
+#define TBI_CONTROL_2_DISABLE_RECEIVE_RUNNING_DISPARITY 0x2000
+#define TBI_CONTROL_2_SHORTCUT_LINK_TIMER 0x4000
+#define TBI_CONTROL_2_SOFT_RESET 0x8000
+
+/* marvel specific */
+#define MV1111_EXT_CTRL1_REG 16 /* PHY Specific Control Reg */
+#define MV1111_SPEC_STAT_REG 17 /* PHY Specific Status Reg */
+#define MV1111_EXT_CTRL2_REG 20 /* Extended PHY Specific Control
Reg */
+
+/*
+ * MARVELL 88E1111 PHY register bit masks
+ */
+/* PHY Specific Status Register (MV1111_EXT_CTRL1_REG) */
+
+#define SPEC_STAT_SPEED_MASK (3 << 14)
+#define SPEC_STAT_FULL_DUP (1 << 13)
+#define SPEC_STAT_PAGE_RCVD (1 << 12)
+#define SPEC_STAT_RESOLVED (1 << 11) /* Speed and Duplex
Resolved */
+#define SPEC_STAT_LINK_UP (1 << 10)
+#define SPEC_STAT_CABLE_LEN_MASK (7 << 7) /* Cable Length
(100/1000 modes only) */
+#define SPEC_STAT_MDIX (1 << 6)
+#define SPEC_STAT_POLARITY (1 << 1)
+#define SPEC_STAT_JABBER (1 << 0)
+
+#define SPEED_1000 (2 << 14)
+#define SPEED_100 (1 << 14)
+#define SPEED_10 (0 << 14)
+
+#define TBI_ADDR 0x1E /* Ten Bit Interface address */
+
+/* negotiated link parameters */
+#define LINK_SPEED_UNKNOWN 0
+#define LINK_SPEED_10 1
+#define LINK_SPEED_100 2
+#define LINK_SPEED_1000 3
+
+#define LINK_DUPLEX_UNKNOWN 0
+#define LINK_DUPLEX_HALF 1
+#define LINK_DUPLEX_FULL 2
+
+static unsigned int phy_address[] = { 8, 9 };
+
+#define vuint32 volatile u32
+
+/* TX/RX buffer descriptors. MUST be cache line aligned in memory. (32
byte)
+ * This structure is accessed by the ethernet DMA engine which means it
+ * MUST be in LITTLE ENDIAN format */
+struct dma_descriptor {
+ vuint32 start_addr0; /* buffer address, least significant
bytes. */
+ vuint32 start_addr1; /* buffer address, most significant
bytes. */
+ vuint32 next_descr_addr0;/* next descriptor address, least
significant bytes. Must be 64-bit aligned. */
+ vuint32 next_descr_addr1;/* next descriptor address, most
significant bytes. */
+ vuint32 vlan_byte_count;/* VLAN tag(top 2 bytes) and byte countt
(bottom 2 bytes). */
+ vuint32 config_status; /* Configuration/Status. */
+ vuint32 reserved1; /* reserved to make the descriptor cache
line aligned. */
+ vuint32 reserved2; /* reserved to make the descriptor cache
line aligned. */
+};
+
+/* last next descriptor address flag */
+#define DMA_DESCR_LAST (1 << 31)
+
+/* TX DMA descriptor config status bits */
+#define DMA_DESCR_TX_EOF (1 << 0) /* end of frame */
+#define DMA_DESCR_TX_SOF (1 << 1) /* start of frame */
+#define DMA_DESCR_TX_PFVLAN (1 << 2)
+#define DMA_DESCR_TX_HUGE (1 << 3)
+#define DMA_DESCR_TX_PAD (1 << 4)
+#define DMA_DESCR_TX_CRC (1 << 5)
+#define DMA_DESCR_TX_DESCR_INT (1 << 14)
+#define DMA_DESCR_TX_RETRY_COUNT 0x000F0000
+#define DMA_DESCR_TX_ONE_COLLISION (1 << 20)
+#define DMA_DESCR_TX_LATE_COLLISION (1 << 24)
+#define DMA_DESCR_TX_UNDERRUN (1 << 25)
+#define DMA_DESCR_TX_RETRY_LIMIT (1 << 26)
+#define DMA_DESCR_TX_OK (1 << 30)
+#define DMA_DESCR_TX_OWNER (1 << 31)
+
+/* RX DMA descriptor status bits */
+#define DMA_DESCR_RX_EOF (1 << 0)
+#define DMA_DESCR_RX_SOF (1 << 1)
+#define DMA_DESCR_RX_VTF (1 << 2)
+#define DMA_DESCR_RX_FRAME_IS_TYPE (1 << 3)
+#define DMA_DESCR_RX_SHORT_FRAME (1 << 4)
+#define DMA_DESCR_RX_HASH_MATCH (1 << 7)
+#define DMA_DESCR_RX_BAD_FRAME (1 << 8)
+#define DMA_DESCR_RX_OVERRUN (1 << 9)
+#define DMA_DESCR_RX_MAX_FRAME_LEN (1 << 11)
+#define DMA_DESCR_RX_CRC_ERROR (1 << 12)
+#define DMA_DESCR_RX_DESCR_INT (1 << 13)
+#define DMA_DESCR_RX_OWNER (1 << 15)
+
+#define RX_BUFFER_SIZE PKTSIZE
+#define NUM_RX_DESC PKTBUFSRX
+
+static struct dma_descriptor tx_descriptor __attribute__
((aligned(32)));
+
+static struct dma_descriptor rx_descr_array[NUM_RX_DESC]
+ __attribute__ ((aligned(32)));
+
+static struct dma_descriptor *rx_descr_current;
+
+static int tsi108_eth_probe(struct eth_device *dev, bd_t * bis);
+static int tsi108_eth_send(struct eth_device *dev,
+ volatile void *packet, int length);
+static int tsi108_eth_recv(struct eth_device *dev);
+static void tsi108_eth_halt(struct eth_device *dev);
+static unsigned int read_phy(unsigned int base,
+ unsigned int phy_addr, unsigned int
phy_reg);
+static void write_phy(unsigned int base,
+ unsigned int phy_addr,
+ unsigned int phy_reg, unsigned int phy_data);
+
+#if TSI108_ETH_DEBUG > 100
+/*
+ * print phy debug infomation
+ */
+static void dump_phy_regs(unsigned int phy_addr)
+{
+ int i;
+
+ printf("PHY %d registers\n", phy_addr);
+ for (i = 0; i <= 30; i++) {
+ printf("%2d 0x%04x\n", i, read_phy(ETH_BASE, phy_addr,
i));
+ }
+ printf("\n");
+
+}
+#else
+#define dump_phy_regs(base) do{}while(0)
+#endif
+
+#if TSI108_ETH_DEBUG > 100
+/*
+ * print debug infomation
+ */
+static void tx_diag_regs(unsigned int base)
+{
+ int i;
+ unsigned long dummy;
+
+ printf("TX diagnostics registers\n");
+ reg_TX_DIAGNOSTIC_ADDR(base) = 0x00 | TX_DIAGNOSTIC_ADDR_AI;
+ udelay(1000);
+ dummy = reg_TX_DIAGNOSTIC_DATA(base);
+ for (i = 0x00; i <= 0x05; i++) {
+ udelay(1000);
+ printf("0x%02x 0x%08x\n", i,
reg_TX_DIAGNOSTIC_DATA(base));
+ }
+ reg_TX_DIAGNOSTIC_ADDR(base) = 0x40 | TX_DIAGNOSTIC_ADDR_AI;
+ udelay(1000);
+ dummy = reg_TX_DIAGNOSTIC_DATA(base);
+ for (i = 0x40; i <= 0x47; i++) {
+ udelay(1000);
+ printf("0x%02x 0x%08x\n", i,
reg_TX_DIAGNOSTIC_DATA(base));
+ }
+ printf("\n");
+
+}
+#else
+#define tx_diag_regs(base) do{}while(0)
+#endif
+
+#if TSI108_ETH_DEBUG > 100
+/*
+ * print debug infomation
+ */
+static void rx_diag_regs(unsigned int base)
+{
+ int i;
+ unsigned long dummy;
+
+ printf("RX diagnostics registers\n");
+ reg_RX_DIAGNOSTIC_ADDR(base) = 0x00 | RX_DIAGNOSTIC_ADDR_AI;
+ udelay(1000);
+ dummy = reg_RX_DIAGNOSTIC_DATA(base);
+ for (i = 0x00; i <= 0x05; i++) {
+ udelay(1000);
+ printf("0x%02x 0x%08x\n", i,
reg_RX_DIAGNOSTIC_DATA(base));
+ }
+ reg_RX_DIAGNOSTIC_ADDR(base) = 0x40 | RX_DIAGNOSTIC_ADDR_AI;
+ udelay(1000);
+ dummy = reg_RX_DIAGNOSTIC_DATA(base);
+ for (i = 0x08; i <= 0x0a; i++) {
+ udelay(1000);
+ printf("0x%02x 0x%08x\n", i,
reg_RX_DIAGNOSTIC_DATA(base));
+ }
+ printf("\n");
+
+}
+#else
+#define rx_diag_regs(base) do{}while(0)
+#endif
+
+#if TSI108_ETH_DEBUG > 100
+/*
+ * print debug infomation
+ */
+static void debug_mii_regs(unsigned int base)
+{
+ printf("MII_MGMT_CONFIG 0x%08x\n",
reg_MII_MGMT_CONFIG(base));
+ printf("MII_MGMT_COMMAND 0x%08x\n",
reg_MII_MGMT_COMMAND(base));
+ printf("MII_MGMT_ADDRESS 0x%08x\n",
reg_MII_MGMT_ADDRESS(base));
+ printf("MII_MGMT_CONTROL 0x%08x\n",
reg_MII_MGMT_CONTROL(base));
+ printf("MII_MGMT_STATUS 0x%08x\n",
reg_MII_MGMT_STATUS(base));
+ printf("MII_MGMT_INDICATORS 0x%08x\n",
reg_MII_MGMT_INDICATORS(base));
+ printf("\n");
+
+}
+#else
+#define debug_mii_regs(base) do{}while(0)
+#endif
+
+/*
+ * Wait until the phy bus is non-busy
+ */
+static void phy_wait(unsigned int base, unsigned int condition)
+{
+ int timeout;
+
+ timeout = 0;
+ while (reg_MII_MGMT_INDICATORS(base) & condition) {
+ udelay(10);
+ if (++timeout > 10000) {
+ printf("ERROR: timeout waiting for phy bus
(%d)\n",
+ condition);
+ break;
+ }
+ }
+}
+
+/*
+ * read phy register
+ */
+static unsigned int read_phy(unsigned int base,
+ unsigned int phy_addr, unsigned int
phy_reg)
+{
+ unsigned int value;
+
+ phy_wait(base, MII_MGMT_INDICATORS_BUSY);
+
+ reg_MII_MGMT_ADDRESS(base) = (phy_addr << 8) | phy_reg;
+
+ /* Ensure that the Read Cycle bit is cleared prior to next read
cycle */
+ reg_MII_MGMT_COMMAND(base) = 0;
+
+ /* start the read */
+ reg_MII_MGMT_COMMAND(base) = MII_MGMT_COMMAND_READ_CYCLE;
+
+ /* wait for the read to complete */
+ phy_wait(base,
+ MII_MGMT_INDICATORS_NOT_VALID |
MII_MGMT_INDICATORS_BUSY);
+
+ value = reg_MII_MGMT_STATUS(base);
+
+ reg_MII_MGMT_COMMAND(base) = 0;
+
+ return value;
+}
+
+/*
+ * write phy register
+ */
+static void write_phy(unsigned int base,
+ unsigned int phy_addr,
+ unsigned int phy_reg, unsigned int phy_data)
+{
+ phy_wait(base, MII_MGMT_INDICATORS_BUSY);
+
+ reg_MII_MGMT_ADDRESS(base) = (phy_addr << 8) | phy_reg;
+
+ /* Ensure that the Read Cycle bit is cleared prior to next cycle
*/
+ reg_MII_MGMT_COMMAND(base) = 0;
+
+ /* start the write */
+ reg_MII_MGMT_CONTROL(base) = phy_data;
+}
+
+/*
+ * configure the marvell 88e1111 phy
+ */
+static int marvell_88e_phy_config(struct eth_device *dev, int *speed,
+ int *duplex)
+{
+ unsigned long base;
+ unsigned long phy_addr;
+ unsigned int phy_status;
+ unsigned int phy_spec_status;
+ int timeout;
+ int phy_speed;
+ int phy_duplex;
+ unsigned int value;
+
+ phy_speed = LINK_SPEED_UNKNOWN;
+ phy_duplex = LINK_DUPLEX_UNKNOWN;
+
+ base = dev->iobase;
+ phy_addr = (unsigned long)dev->priv;
+
+ /* Take the PHY out of reset. */
+ write_phy(ETH_BASE, phy_addr, PHY_CTRL_REG, PHY_CTRL_RESET);
+
+ /* Wait for the reset process to complete. */
+ udelay(10);
+ timeout = 0;
+ while ((phy_status =
+ read_phy(ETH_BASE, phy_addr, PHY_CTRL_REG)) &
PHY_CTRL_RESET) {
+ udelay(10);
+ if (++timeout > 10000) {
+ printf("ERROR: timeout waiting for phy
reset\n");
+ break;
+ }
+ }
+
+ /* TBI Configuration. */
+ write_phy(base, TBI_ADDR, TBI_CONTROL_2,
TBI_CONTROL_2_G_MII_MODE |
+ TBI_CONTROL_2_RECEIVE_CLOCK_SELECT);
+ /* Wait for the link to be established. */
+ timeout = 0;
+ do {
+ udelay(20000);
+ phy_status = read_phy(ETH_BASE, phy_addr,
PHY_STATUS_REG);
+ if (++timeout > 100) {
+ debug_lev(1, "ERROR: unable to establish
link!!!\n");
+ break;
+ }
+ } while ((phy_status & PHY_STAT_LINK_UP) == 0);
+
+ if ((phy_status & PHY_STAT_LINK_UP) == 0) {
+ return 0;
+ }
+
+ value = 0;
+ phy_spec_status = read_phy(ETH_BASE, phy_addr,
MV1111_SPEC_STAT_REG);
+ if (phy_spec_status & SPEC_STAT_RESOLVED) {
+ switch (phy_spec_status & SPEC_STAT_SPEED_MASK) {
+ case SPEED_1000:
+ phy_speed = LINK_SPEED_1000;
+ value |= PHY_CTRL_SPEED1;
+ break;
+ case SPEED_100:
+ phy_speed = LINK_SPEED_100;
+ value |= PHY_CTRL_SPEED0;
+ break;
+ case SPEED_10:
+ phy_speed = LINK_SPEED_10;
+ break;
+ }
+ if (phy_spec_status & SPEC_STAT_FULL_DUP) {
+ phy_duplex = LINK_DUPLEX_FULL;
+ value |= PHY_CTRL_FULL_DUPLEX;
+ } else {
+ phy_duplex = LINK_DUPLEX_HALF;
+ }
+ }
+ /* set TBI speed */
+ write_phy(base, TBI_ADDR, PHY_CTRL_REG, value);
+ write_phy(base, TBI_ADDR, PHY_AN_ADV_REG, 0x0060);
+
+#if TSI108_ETH_DEBUG > 0
+ printf("%s link is up", dev->name);
+ phy_spec_status = read_phy(ETH_BASE, phy_addr,
MV1111_SPEC_STAT_REG);
+ if (phy_spec_status & SPEC_STAT_RESOLVED) {
+ switch (phy_speed) {
+ case LINK_SPEED_1000:
+ printf(", 1000 Mbps");
+ break;
+ case LINK_SPEED_100:
+ printf(", 100 Mbps");
+ break;
+ case LINK_SPEED_10:
+ printf(", 10 Mbps");
+ break;
+ }
+ if (phy_duplex == LINK_DUPLEX_FULL) {
+ printf(", Full duplex");
+ } else {
+ printf(", Half duplex");
+ }
+ }
+ printf("\n");
+#endif
+
+ dump_phy_regs(TBI_ADDR);
+ if (speed) {
+ *speed = phy_speed;
+ }
+ if (duplex) {
+ *duplex = phy_duplex;
+ }
+
+ return 1;
+}
+
+/*
+ * External interface
+ *
+ * register the tsi108 ethernet controllers with the multi-ethernet
system
+ */
+int tsi108_eth_initialize(bd_t * bis)
+{
+ struct eth_device *dev;
+ int index;
+
+ for (index = 0; index < CONFIG_TSI108_ETH_NUM_PORTS; index++) {
+ dev = (struct eth_device *)malloc(sizeof(struct
eth_device));
+
+ sprintf(dev->name, "TSI108_eth%d", index);
+
+ dev->iobase = ETH_BASE + (index * ETH_PORT_OFFSET);
+ dev->priv = (void *)(phy_address[index]);
+ dev->init = tsi108_eth_probe;
+ dev->halt = tsi108_eth_halt;
+ dev->send = tsi108_eth_send;
+ dev->recv = tsi108_eth_recv;
+
+ eth_register(dev);
+ }
+ return index;
+}
+
+/*
+ * probe for and initialize a single ethernet interface
+ */
+static int tsi108_eth_probe(struct eth_device *dev, bd_t * bis)
+{
+ unsigned long base;
+ unsigned long value;
+ int index;
+ struct dma_descriptor *tx_descr;
+ struct dma_descriptor *rx_descr;
+ int speed;
+ int duplex;
+
+ base = dev->iobase;
+
+ reg_PORT_CONTROL(base) = PORT_CONTROL_STE | PORT_CONTROL_BPT;
+
+ /* Bring DMA/FIFO out of reset. */
+ reg_TX_CONFIG(base) = 0x00000000;
+ reg_RX_CONFIG(base) = 0x00000000;
+
+ reg_TX_THRESHOLDS(base) = (192 << 16) | 192;
+ reg_RX_THRESHOLDS(base) = (192 << 16) | 112;
+
+ /* Bring MAC out of reset. */
+ reg_MAC_CONFIG_1(base) = 0x00000000;
+
+ /* DMA MAC configuration. */
+ reg_MAC_CONFIG_1(base) =
+ MAC_CONFIG_1_RX_ENABLE | MAC_CONFIG_1_TX_ENABLE;
+
+ reg_MII_MGMT_CONFIG(base) = MII_MGMT_CONFIG_NO_PREAMBLE;
+ reg_MAXIMUM_FRAME_LENGTH(base) = RX_BUFFER_SIZE;
+
+ /* Note: Early tsi108 manual did not have correct byte order
+ * for the station address.*/
+ reg_STATION_ADDRESS_1(base) = (dev->enetaddr[5] << 24) |
+ (dev->enetaddr[4] << 16) |
+ (dev->enetaddr[3] << 8) | (dev->enetaddr[2] << 0);
+
+ reg_STATION_ADDRESS_2(base) = (dev->enetaddr[1] << 24) |
+ (dev->enetaddr[0] << 16);
+
+ if (marvell_88e_phy_config(dev, &speed, &duplex) == 0) {
+ return 0;
+ }
+
+ value =
+ MAC_CONFIG_2_PREAMBLE_LENGTH(7) | MAC_CONFIG_2_PAD_CRC |
+ MAC_CONFIG_2_CRC_ENABLE;
+ if (speed == LINK_SPEED_1000) {
+ value |=
MAC_CONFIG_2_INTERFACE_MODE(INTERFACE_MODE_BYTE);
+ } else {
+ value |=
MAC_CONFIG_2_INTERFACE_MODE(INTERFACE_MODE_NIBBLE);
+ reg_PORT_CONTROL(base) |= PORT_CONTROL_SPD;
+ }
+ if (duplex == LINK_DUPLEX_FULL) {
+ value |= MAC_CONFIG_2_FULL_DUPLEX;
+ reg_PORT_CONTROL(base) &= ~PORT_CONTROL_BPT;
+ } else {
+ reg_PORT_CONTROL(base) |= PORT_CONTROL_BPT;
+ }
+ reg_MAC_CONFIG_2(base) = value;
+
+ reg_RX_CONFIG(base) = RX_CONFIG_SE;
+ reg_RX_QUEUE_0_CONFIG(base) = OCN_PORT_MEMORY;
+ reg_RX_QUEUE_0_BUF_CONFIG(base) = OCN_PORT_MEMORY;
+
+ /* initialize the RX DMA descriptors */
+ rx_descr = &rx_descr_array[0];
+ rx_descr_current = rx_descr;
+ for (index = 0; index < NUM_RX_DESC; index++) {
+ /* make sure the receive buffers are not in cache */
+ invalidate_dcache_range((unsigned
long)NetRxPackets[index],
+ (unsigned
long)NetRxPackets[index] +
+ RX_BUFFER_SIZE);
+ rx_descr->start_addr0 =
+ cpu_to_le32((vuint32) NetRxPackets[index]);
+ rx_descr->start_addr1 = 0;
+ rx_descr->next_descr_addr0 =
+ cpu_to_le32((vuint32) (rx_descr + 1));
+ rx_descr->next_descr_addr1 = 0;
+ rx_descr->vlan_byte_count = 0;
+ rx_descr->config_status = cpu_to_le32((RX_BUFFER_SIZE <<
16) |
+
DMA_DESCR_RX_OWNER);
+ rx_descr++;
+ }
+ rx_descr--;
+ rx_descr->next_descr_addr0 = 0;
+ rx_descr->next_descr_addr1 = cpu_to_le32(DMA_DESCR_LAST);
+ /* Push the descriptors to RAM so the ethernet DMA can see them
*/
+ invalidate_dcache_range((unsigned long)rx_descr_array,
+ (unsigned long)rx_descr_array +
+ sizeof(rx_descr_array));
+
+ /* enable RX queue */
+ reg_RX_CONTROL(base) = TX_CONTROL_GO | 0x01;
+ reg_RX_QUEUE_0_PTR_LOW(base) = (u32) rx_descr_current;
+ /* enable receive DMA */
+ reg_RX_QUEUE_0_PTR_HIGH(base) = RX_QUEUE_0_PTR_HIGH_VALID;
+
+ reg_TX_QUEUE_0_CONFIG(base) = OCN_PORT_MEMORY;
+ reg_TX_QUEUE_0_BUF_CONFIG(base) = OCN_PORT_MEMORY;
+
+ /* initialize the TX DMA descriptor */
+ tx_descr = &tx_descriptor;
+
+ tx_descr->start_addr0 = 0;
+ tx_descr->start_addr1 = 0;
+ tx_descr->next_descr_addr0 = 0;
+ tx_descr->next_descr_addr1 = cpu_to_le32(DMA_DESCR_LAST);
+ tx_descr->vlan_byte_count = 0;
+ tx_descr->config_status = cpu_to_le32(DMA_DESCR_TX_OK |
+ DMA_DESCR_TX_SOF |
+ DMA_DESCR_TX_EOF);
+ /* enable TX queue */
+ reg_TX_CONTROL(base) = TX_CONTROL_GO | 0x01;
+
+ return 1;
+}
+
+/*
+ * send a packet
+ */
+static int tsi108_eth_send(struct eth_device *dev,
+ volatile void *packet, int length)
+{
+ unsigned long base;
+ int timeout;
+ struct dma_descriptor *tx_descr;
+ unsigned long status;
+
+ base = dev->iobase;
+ tx_descr = &tx_descriptor;
+
+ /* Wait until the last packet has been transmitted. */
+ timeout = 0;
+ do {
+ /* make sure we see the changes made by the DMA engine
*/
+ invalidate_dcache_range((unsigned long)tx_descr,
+ (unsigned long)tx_descr +
+ sizeof(struct dma_descriptor));
+
+ if (timeout != 0) {
+ udelay(15);
+ }
+ if (++timeout > 10000) {
+ tx_diag_regs(base);
+ debug_lev(1,
+ "ERROR: timeout waiting for last
transmit packet to be sent\n");
+ return 0;
+ }
+ } while (tx_descr->config_status &
cpu_to_le32(DMA_DESCR_TX_OWNER));
+
+ status = le32_to_cpu(tx_descr->config_status);
+ if ((status & DMA_DESCR_TX_OK) == 0) {
+#ifdef TX_PRINT_ERRORS
+ printf("TX packet error: 0x%08x\n %s%s%s%s\n",
status,
+ status & DMA_DESCR_TX_OK ? "tx error, " : "",
+ status & DMA_DESCR_TX_RETRY_LIMIT ?
+ "retry limit reached, " : "",
+ status & DMA_DESCR_TX_UNDERRUN ? "underrun, " :
"",
+ status & DMA_DESCR_TX_LATE_COLLISION ? "late
collision, "
+ : "");
+#endif
+ }
+
+ debug_lev(9, "sending packet %d\n", length);
+ tx_descr->start_addr0 = cpu_to_le32((vuint32) packet);
+ tx_descr->start_addr1 = 0;
+ tx_descr->next_descr_addr0 = 0;
+ tx_descr->next_descr_addr1 = cpu_to_le32(DMA_DESCR_LAST);
+ tx_descr->vlan_byte_count = cpu_to_le32(length);
+ tx_descr->config_status = cpu_to_le32(DMA_DESCR_TX_OWNER |
+ DMA_DESCR_TX_CRC |
+ DMA_DESCR_TX_PAD |
+ DMA_DESCR_TX_SOF |
+ DMA_DESCR_TX_EOF);
+
+ invalidate_dcache_range((unsigned long)tx_descr,
+ (unsigned long)tx_descr +
+ sizeof(struct dma_descriptor));
+
+ invalidate_dcache_range((unsigned long)packet,
+ (unsigned long)packet + length);
+
+ reg_TX_QUEUE_0_PTR_LOW(base) = (u32) tx_descr;
+ reg_TX_QUEUE_0_PTR_HIGH(base) = TX_QUEUE_0_PTR_HIGH_VALID;
+
+ return length;
+}
+
+/*
+ * Check for received packets and send them up the protocal stack
+ */
+static int tsi108_eth_recv(struct eth_device *dev)
+{
+ struct dma_descriptor *rx_descr;
+ unsigned long base;
+ int length = 0;
+ unsigned long status;
+ volatile uchar *buffer;
+
+ base = dev->iobase;
+
+ /* make sure we see the changes made by the DMA engine */
+ invalidate_dcache_range((unsigned long)rx_descr_array,
+ (unsigned long)rx_descr_array +
+ sizeof(rx_descr_array));
+
+ /* process all of the received packets */
+ rx_descr = rx_descr_current;
+ while ((rx_descr->config_status &
cpu_to_le32(DMA_DESCR_RX_OWNER)) == 0) {
+ /* check for error */
+ status = le32_to_cpu(rx_descr->config_status);
+ if (status & DMA_DESCR_RX_BAD_FRAME) {
+#ifdef RX_PRINT_ERRORS
+ printf("RX packet error: 0x%08x\n
%s%s%s%s%s%s\n",
+ status,
+ status & DMA_DESCR_RX_FRAME_IS_TYPE ?
"too big, "
+ : "",
+ status & DMA_DESCR_RX_SHORT_FRAME ? "too
short, "
+ : "",
+ status & DMA_DESCR_RX_BAD_FRAME ? "bad
frame, " :
+ "",
+ status & DMA_DESCR_RX_OVERRUN ? "overrun,
" : "",
+ status & DMA_DESCR_RX_MAX_FRAME_LEN ?
+ "max length, " : "",
+ status & DMA_DESCR_RX_CRC_ERROR ? "CRC
error, " :
+ "");
+#endif
+ } else {
+ length =
+ le32_to_cpu(rx_descr->vlan_byte_count) &
0xFFFF;
+
+ /*** process packet ***/
+ buffer =
+ (volatile uchar
+ *)(le32_to_cpu(rx_descr->start_addr0));
+ NetReceive(buffer, length);
+
+ invalidate_dcache_range((unsigned long)buffer,
+ (unsigned long)buffer +
+ RX_BUFFER_SIZE);
+ }
+ /* Give this buffer back to the DMA engine */
+ rx_descr->vlan_byte_count = 0;
+ rx_descr->config_status = cpu_to_le32((RX_BUFFER_SIZE <<
16) |
+
DMA_DESCR_RX_OWNER);
+ /* move descriptor pointer forward */
+ rx_descr =
+ (struct dma_descriptor
+ *)(le32_to_cpu(rx_descr->next_descr_addr0));
+ if (rx_descr == 0) {
+ rx_descr = &rx_descr_array[0];
+ }
+ }
+ /* remember where we are for next time */
+ rx_descr_current = rx_descr;
+
+ /* If the DMA engine has reached the end of the queue
+ * start over at the begining */
+ if (reg_RX_EXTENDED_STATUS(base) & RX_EXTENDED_STATUS_EOQ_0) {
+
+ reg_RX_EXTENDED_STATUS(base) = RX_EXTENDED_STATUS_EOQ_0;
+ reg_RX_QUEUE_0_PTR_LOW(base) = (u32) &
rx_descr_array[0];
+ reg_RX_QUEUE_0_PTR_HIGH(base) =
RX_QUEUE_0_PTR_HIGH_VALID;
+ }
+
+ return length;
+}
+
+/*
+ * disable an ethernet interface
+ */
+static void tsi108_eth_halt(struct eth_device *dev)
+{
+ unsigned long base;
+
+ base = dev->iobase;
+
+ /* Put DMA/FIFO into reset state. */
+ reg_TX_CONFIG(base) = TX_CONFIG_RST;
+ reg_RX_CONFIG(base) = RX_CONFIG_RST;
+
+ /* Put MAC into reset state. */
+ reg_MAC_CONFIG_1(base) = MAC_CONFIG_1_SOFT_RESET;
+}
+
+#endif
--
1.4.0
