--- /dev/null
+/* mbed Microcontroller Library
+ * Copyright (c) 2006-2013 ARM Limited
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include <string.h>
+#include "ethernet_api.h"
+#include "cmsis.h"
+#include "mbed_interface.h"
+#include "toolchain.h"
+#include "mbed_error.h"
+#include "ether_iodefine.h"
+#include "ethernetext_api.h"
+
+/* Descriptor info */
+#define NUM_OF_TX_DESCRIPTOR (16)
+#define NUM_OF_RX_DESCRIPTOR (16)
+#define SIZE_OF_BUFFER (1600) /* Must be an integral multiple of 32 */
+#define MAX_SEND_SIZE (1514)
+/* Ethernet Descriptor Value Define */
+#define TD0_TFP_TOP_BOTTOM (0x30000000)
+#define TD0_TACT (0x80000000)
+#define TD0_TDLE (0x40000000)
+#define RD0_RACT (0x80000000)
+#define RD0_RDLE (0x40000000)
+#define RD0_RFE (0x08000000)
+#define RD0_RCSE (0x04000000)
+#define RD0_RFS (0x03FF0000)
+#define RD0_RCS (0x0000FFFF)
+#define RD0_RFS_RFOF (0x02000000)
+#define RD0_RFS_RUAF (0x00400000)
+#define RD0_RFS_RRF (0x00100000)
+#define RD0_RFS_RTLF (0x00080000)
+#define RD0_RFS_RTSF (0x00040000)
+#define RD0_RFS_PRE (0x00020000)
+#define RD0_RFS_CERF (0x00010000)
+#define RD0_RFS_ERROR (RD0_RFS_RFOF | RD0_RFS_RUAF | RD0_RFS_RRF | RD0_RFS_RTLF | \
+ RD0_RFS_RTSF | RD0_RFS_PRE | RD0_RFS_CERF)
+#define RD1_RDL_MSK (0x0000FFFF)
+/* PHY Register */
+#define BASIC_MODE_CONTROL_REG (0)
+#define BASIC_MODE_STATUS_REG (1)
+#define PHY_IDENTIFIER1_REG (2)
+#define PHY_IDENTIFIER2_REG (3)
+#define PHY_SP_CTL_STS_REG (31)
+/* MII management interface access */
+#define PHY_ADDR (0) /* Confirm the pin connection of the PHY-LSI */
+#define PHY_ST (1)
+#define PHY_WRITE (1)
+#define PHY_READ (2)
+#define MDC_WAIT (6) /* 400ns/4 */
+#define BASIC_STS_MSK_LINK (0x0004) /* Link Status */
+#define BASIC_STS_MSK_AUTO_CMP (0x0010) /* Auto-Negotiate Complete */
+#define M_PHY_ID (0xFFFFFFF0)
+#define PHY_ID_LAN8710A (0x0007C0F0)
+/* ETHERPIR0 */
+#define PIR0_MDI (0x00000008)
+#define PIR0_MDO (0x00000004)
+#define PIR0_MMD (0x00000002)
+#define PIR0_MDC (0x00000001)
+#define PIR0_MDC_HIGH (0x00000001)
+#define PIR0_MDC_LOW (0x00000000)
+/* ETHEREDRRR0 */
+#define EDRRR0_RR (0x00000001)
+/* ETHEREDTRR0 */
+#define EDTRR0_TR (0x00000003)
+/* software wait */
+#define LOOP_100us (6700) /* Loop counter for software wait 6666=100us/((1/400MHz)*6cyc) */
+
+#define EDMAC_EESIPR_INI_RECV (0x0205001F) /* 0x02000000 : Detect reception suspended */
+ /* 0x00040000 : Detect frame reception */
+ /* 0x00010000 : Receive FIFO overflow */
+ /* 0x00000010 : Residual bit frame reception */
+ /* 0x00000008 : Long frame reception */
+ /* 0x00000004 : Short frame reception */
+ /* 0x00000002 : PHY-LSI reception error */
+ /* 0x00000001 : Receive frame CRC error */
+#define EDMAC_EESIPR_INI_EtherC (0x00400000) /* 0x00400000 : E-MAC status register */
+
+/* Send descriptor */
+typedef struct tag_edmac_send_desc {
+ uint32_t td0;
+ uint32_t td1;
+ uint8_t *td2;
+ uint32_t padding4;
+} edmac_send_desc_t;
+
+/* Receive descriptor */
+typedef struct tag_edmac_recv_desc {
+ uint32_t rd0;
+ uint32_t rd1;
+ uint8_t *rd2;
+ uint32_t padding4;
+} edmac_recv_desc_t;
+
+/* memory */
+/* The whole transmit/receive descriptors (must be allocated in 16-byte boundaries) */
+/* Transmit/receive buffers (must be allocated in 16-byte boundaries) */
+static uint8_t ehernet_nc_memory[(sizeof(edmac_send_desc_t) * NUM_OF_TX_DESCRIPTOR) +
+ (sizeof(edmac_recv_desc_t) * NUM_OF_RX_DESCRIPTOR) +
+ (NUM_OF_TX_DESCRIPTOR * SIZE_OF_BUFFER) +
+ (NUM_OF_RX_DESCRIPTOR * SIZE_OF_BUFFER)]
+ __attribute((section("NC_BSS"),aligned(16))); //16 bytes aligned!
+static int32_t rx_read_offset; /* read offset */
+static int32_t tx_wite_offset; /* write offset */
+static uint32_t send_top_index;
+static uint32_t recv_top_index;
+static int32_t Interrupt_priority;
+static edmac_send_desc_t *p_eth_desc_dsend = NULL;
+static edmac_recv_desc_t *p_eth_desc_drecv = NULL;
+static edmac_recv_desc_t *p_recv_end_desc = NULL;
+static ethernetext_cb_fnc *p_recv_cb_fnc = NULL;
+static char mac_addr[6] = {0x00, 0x02, 0xF7, 0xF0, 0x00, 0x00}; /* MAC Address */
+static uint32_t phy_id = 0;
+static uint32_t start_stop = 1; /* 0:stop 1:start */
+
+/* function */
+static void lan_reg_reset(void);
+static void lan_desc_create(void);
+static void lan_reg_set(int32_t link);
+static uint16_t phy_reg_read(uint16_t reg_addr);
+static void phy_reg_write(uint16_t reg_addr, uint16_t data);
+static void mii_preamble(void);
+static void mii_cmd(uint16_t reg_addr, uint32_t option);
+static void mii_reg_read(uint16_t *data);
+static void mii_reg_write(uint16_t data);
+static void mii_z(void);
+static void mii_write_1(void);
+static void mii_write_0(void);
+static void set_ether_pir(uint32_t set_data);
+static void wait_100us(int32_t wait_cnt);
+
+
+int ethernetext_init(ethernet_cfg_t *p_ethcfg) {
+ int32_t i;
+ uint16_t val;
+
+ CPGSTBCR7 &= ~(CPG_STBCR7_BIT_MSTP74); /* enable ETHER clock */
+
+ /* P4_2(PHY Reset) */
+ GPIOP4 &= ~0x0004; /* Outputs low level */
+ GPIOPMC4 &= ~0x0004; /* Port mode */
+ GPIOPM4 &= ~0x0004; /* Output mode */
+
+ /* GPIO P1 P1_14(ET_COL) */
+ GPIOPMC1 |= 0x4000;
+ GPIOPFCAE1 &= ~0x4000;
+ GPIOPFCE1 |= 0x4000;
+ GPIOPFC1 |= 0x4000;
+
+ /* P3_0(ET_TXCLK), P3_3(ET_MDIO), P3_4(ET_RXCLK), P3_5(ET_RXER), P3_6(ET_RXDV) */
+ GPIOPMC3 |= 0x0079;
+ GPIOPFCAE3 &= ~0x0079;
+ GPIOPFCE3 &= ~0x0079;
+ GPIOPFC3 |= 0x0079;
+ GPIOPIPC3 |= 0x0079;
+
+ /* P5_9(ET_MDC) */
+ GPIOPMC5 |= 0x0200;
+ GPIOPFCAE5 &= ~0x0200;
+ GPIOPFCE5 &= ~0x0200;
+ GPIOPFC5 |= 0x0200;
+ GPIOPIPC5 |= 0x0200;
+
+ /* P10_1(ET_TXER), P10_2(ET_TXEN), P10_3(ET_CRS), P10_4(ET_TXD0), P10_5(ET_TXD1) */
+ /* P10_6(ET_TXD2), P10_7(ET_TXD3), P10_8(ET_RXD0), P10_9(ET_RXD1), P10_10(ET_RXD2), P10_11(ET_RXD3) */
+ GPIOPMC10 |= 0x0FFE;
+ GPIOPFCAE10 &= ~0x0FFE;
+ GPIOPFCE10 |= 0x0FFE;
+ GPIOPFC10 |= 0x0FFE;
+ GPIOPIPC10 |= 0x0FFE;
+
+ /* Resets the E-MAC,E-DMAC */
+ lan_reg_reset();
+
+ /* PHY Reset */
+ GPIOP4 &= ~0x0004; /* P4_2 Outputs low level */
+ wait_100us(250); /* 25msec */
+ GPIOP4 |= 0x0004; /* P4_2 Outputs high level */
+ wait_100us(100); /* 10msec */
+
+ /* Resets the PHY-LSI */
+ phy_reg_write(BASIC_MODE_CONTROL_REG, 0x8000);
+ for (i = 10000; i > 0; i--) {
+ val = phy_reg_read(BASIC_MODE_CONTROL_REG);
+ if (((uint32_t)val & 0x8000uL) == 0) {
+ break; /* Reset complete */
+ }
+ }
+
+ phy_id = ((uint32_t)phy_reg_read(PHY_IDENTIFIER1_REG) << 16)
+ | (uint32_t)phy_reg_read(PHY_IDENTIFIER2_REG);
+
+ Interrupt_priority = p_ethcfg->int_priority;
+ p_recv_cb_fnc = p_ethcfg->recv_cb;
+ start_stop = 1;
+
+ if (p_ethcfg->ether_mac != NULL) {
+ (void)memcpy(mac_addr, p_ethcfg->ether_mac, sizeof(mac_addr));
+ } else {
+ ethernet_address(mac_addr); /* Get MAC Address */
+ }
+
+ return 0;
+}
+
+void ethernetext_start_stop(int32_t mode) {
+ if (mode == 1) {
+ /* start */
+ ETHEREDTRR0 |= EDTRR0_TR;
+ ETHEREDRRR0 |= EDRRR0_RR;
+ start_stop = 1;
+ } else {
+ /* stop */
+ ETHEREDTRR0 &= ~EDTRR0_TR;
+ ETHEREDRRR0 &= ~EDRRR0_RR;
+ start_stop = 0;
+ }
+}
+
+int ethernetext_chk_link_mode(void) {
+ int32_t link;
+ uint16_t data;
+
+ if ((phy_id & M_PHY_ID) == PHY_ID_LAN8710A) {
+ data = phy_reg_read(PHY_SP_CTL_STS_REG);
+ switch (((uint32_t)data >> 2) & 0x00000007) {
+ case 0x0001:
+ link = HALF_10M;
+ break;
+ case 0x0005:
+ link = FULL_10M;
+ break;
+ case 0x0002:
+ link = HALF_TX;
+ break;
+ case 0x0006:
+ link = FULL_TX;
+ break;
+ default:
+ link = NEGO_FAIL;
+ break;
+ }
+ } else {
+ link = NEGO_FAIL;
+ }
+
+ return link;
+}
+
+void ethernetext_set_link_mode(int32_t link) {
+ lan_reg_reset(); /* Resets the E-MAC,E-DMAC */
+ lan_desc_create(); /* Initialize of buffer memory */
+ lan_reg_set(link); /* E-DMAC, E-MAC initialization */
+}
+
+int ethernet_init() {
+ ethernet_cfg_t ethcfg;
+
+ ethcfg.int_priority = 5;
+ ethcfg.recv_cb = NULL;
+ ethcfg.ether_mac = NULL;
+ ethernetext_init(ðcfg);
+ ethernet_set_link(-1, 0); /* Auto-Negotiation */
+
+ return 0;
+}
+
+void ethernet_free() {
+ ETHERARSTR |= 0x00000001; /* ETHER software reset */
+ CPGSTBCR7 |= CPG_STBCR7_BIT_MSTP74; /* disable ETHER clock */
+}
+
+int ethernet_write(const char *data, int slen) {
+ edmac_send_desc_t *p_send_desc;
+ int32_t copy_size;
+
+ if ((p_eth_desc_dsend == NULL) || (data == NULL) || (slen < 0)
+ || (tx_wite_offset < 0) || (tx_wite_offset >= MAX_SEND_SIZE)) {
+ copy_size = 0;
+ } else {
+ p_send_desc = &p_eth_desc_dsend[send_top_index]; /* Current descriptor */
+ if ((p_send_desc->td0 & TD0_TACT) != 0) {
+ copy_size = 0;
+ } else {
+ copy_size = MAX_SEND_SIZE - tx_wite_offset;
+ if (copy_size > slen) {
+ copy_size = slen;
+ }
+ (void)memcpy(&p_send_desc->td2[tx_wite_offset], data, copy_size);
+ tx_wite_offset += copy_size;
+ }
+ }
+
+ return copy_size;
+}
+
+int ethernet_send() {
+ edmac_send_desc_t *p_send_desc;
+ int32_t ret;
+
+ if ((p_eth_desc_dsend == NULL) || (tx_wite_offset <= 0)) {
+ ret = 0;
+ } else {
+ /* Transfer 1 frame */
+ p_send_desc = &p_eth_desc_dsend[send_top_index]; /* Current descriptor */
+
+ /* Sets the frame length */
+ p_send_desc->td1 = ((uint32_t)tx_wite_offset << 16);
+ tx_wite_offset = 0;
+
+ /* Sets the transmit descriptor to transmit again */
+ p_send_desc->td0 &= (TD0_TACT | TD0_TDLE | TD0_TFP_TOP_BOTTOM);
+ p_send_desc->td0 |= TD0_TACT;
+ if ((start_stop == 1) && ((ETHEREDTRR0 & EDTRR0_TR) != EDTRR0_TR)) {
+ ETHEREDTRR0 |= EDTRR0_TR;
+ }
+
+ /* Update the current descriptor */
+ send_top_index++;
+ if (send_top_index >= NUM_OF_TX_DESCRIPTOR) {
+ send_top_index = 0;
+ }
+ ret = 1;
+ }
+
+ return ret;
+}
+
+int ethernet_receive() {
+ edmac_recv_desc_t *p_recv_desc;
+ int32_t receive_size = 0;
+
+ if (p_eth_desc_drecv != NULL) {
+ if (p_recv_end_desc != NULL) {
+ /* Sets the receive descriptor to receive again */
+ p_recv_end_desc->rd0 &= (RD0_RACT | RD0_RDLE);
+ p_recv_end_desc->rd0 |= RD0_RACT;
+ if ((start_stop == 1) && ((ETHEREDRRR0 & EDRRR0_RR) == 0)) {
+ ETHEREDRRR0 |= EDRRR0_RR;
+ }
+ p_recv_end_desc = NULL;
+ }
+
+ p_recv_desc = &p_eth_desc_drecv[recv_top_index]; /* Current descriptor */
+ if ((p_recv_desc->rd0 & RD0_RACT) == 0) {
+ /* Receives 1 frame */
+ if (((p_recv_desc->rd0 & RD0_RFE) != 0) && ((p_recv_desc->rd0 & RD0_RFS_ERROR) != 0)) {
+ /* Receive frame error */
+ /* Sets the receive descriptor to receive again */
+ p_recv_desc->rd0 &= (RD0_RACT | RD0_RDLE);
+ p_recv_desc->rd0 |= RD0_RACT;
+ if ((start_stop == 1) && ((ETHEREDRRR0 & EDRRR0_RR) == 0)) {
+ ETHEREDRRR0 |= EDRRR0_RR;
+ }
+ } else {
+ /* Copies the received frame */
+ rx_read_offset = 0;
+ p_recv_end_desc = p_recv_desc;
+ receive_size = (p_recv_desc->rd1 & RD1_RDL_MSK); /* number of bytes received */
+ }
+
+ /* Update the current descriptor */
+ recv_top_index++;
+ if (recv_top_index >= NUM_OF_TX_DESCRIPTOR) {
+ recv_top_index = 0;
+ }
+ }
+ }
+
+ return receive_size;
+}
+
+int ethernet_read(char *data, int dlen) {
+ edmac_recv_desc_t *p_recv_desc = p_recv_end_desc; /* Read top descriptor */
+ int32_t copy_size;
+
+ if ((data == NULL) || (dlen < 0) || (p_recv_desc == NULL)) {
+ copy_size = 0;
+ } else {
+ copy_size = (p_recv_desc->rd1 & RD1_RDL_MSK) - rx_read_offset;
+ if (copy_size > dlen) {
+ copy_size = dlen;
+ }
+ (void)memcpy(data, &p_recv_desc->rd2[rx_read_offset], (size_t)copy_size);
+ rx_read_offset += copy_size;
+ }
+
+ return copy_size;
+}
+
+void ethernet_address(char *mac) {
+ if (mac != NULL) {
+ mbed_mac_address(mac); /* Get MAC Address */
+ }
+}
+
+int ethernet_link(void) {
+ int32_t ret;
+ uint16_t data;
+
+ data = phy_reg_read(BASIC_MODE_STATUS_REG);
+ if (((uint32_t)data & BASIC_STS_MSK_LINK) != 0) {
+ ret = 1;
+ } else {
+ ret = 0;
+ }
+
+ return ret;
+}
+
+void ethernet_set_link(int speed, int duplex) {
+ uint16_t data;
+ int32_t i;
+ int32_t link;
+
+ if ((speed < 0) || (speed > 1)) {
+ data = 0x1000; /* Auto-Negotiation Enable */
+ phy_reg_write(BASIC_MODE_CONTROL_REG, data);
+ data = phy_reg_read(BASIC_MODE_STATUS_REG);
+ for (i = 0; i < 1000; i++) {
+ if (((uint32_t)data & BASIC_STS_MSK_AUTO_CMP) != 0) {
+ break;
+ }
+ wait_100us(10);
+ }
+ } else {
+ data = (uint16_t)(((uint32_t)speed << 13) | ((uint32_t)duplex << 8));
+ phy_reg_write(BASIC_MODE_CONTROL_REG, data);
+ wait_100us(1);
+ }
+
+ link = ethernetext_chk_link_mode();
+ ethernetext_set_link_mode(link);
+}
+
+void INT_Ether(void) {
+ uint32_t stat_edmac;
+ uint32_t stat_etherc;
+
+ /* Clear the interrupt request flag */
+ stat_edmac = (ETHEREESR0 & ETHEREESIPR0); /* Targets are restricted to allowed interrupts */
+ ETHEREESR0 = stat_edmac;
+ /* Reception-related */
+ if (stat_edmac & EDMAC_EESIPR_INI_RECV) {
+ if (p_recv_cb_fnc != NULL) {
+ p_recv_cb_fnc();
+ }
+ }
+ /* E-MAC-related */
+ if (stat_edmac & EDMAC_EESIPR_INI_EtherC) {
+ /* Clear the interrupt request flag */
+ stat_etherc = (ETHERECSR0 & ETHERECSIPR0); /* Targets are restricted to allowed interrupts */
+ ETHERECSR0 = stat_etherc;
+ }
+}
+
+static void lan_reg_reset(void) {
+ volatile int32_t j = 400; /* Wait for B dia 256 cycles ((I dia/B dia)*256)/6cyc = 8*256/6 = 342 */
+
+ ETHERARSTR |= 0x00000001; /* ETHER software reset */
+ while (j--) {
+ /* Do Nothing */
+ }
+
+ ETHEREDSR0 |= 0x00000003; /* E-DMAC software reset */
+ ETHEREDMR0 |= 0x00000003; /* Set SWRR and SWRT simultaneously */
+
+ /* Check clear software reset */
+ while ((ETHEREDMR0 & 0x00000003) != 0) {
+ /* Do Nothing */
+ }
+}
+
+static void lan_desc_create(void) {
+ int32_t i;
+ uint8_t *p_memory_top;
+
+ (void)memset((void *)ehernet_nc_memory, 0, sizeof(ehernet_nc_memory));
+ p_memory_top = ehernet_nc_memory;
+
+ /* Descriptor area configuration */
+ p_eth_desc_dsend = (edmac_send_desc_t *)p_memory_top;
+ p_memory_top += (sizeof(edmac_send_desc_t) * NUM_OF_TX_DESCRIPTOR);
+ p_eth_desc_drecv = (edmac_recv_desc_t *)p_memory_top;
+ p_memory_top += (sizeof(edmac_recv_desc_t) * NUM_OF_RX_DESCRIPTOR);
+
+ /* Transmit descriptor */
+ for (i = 0; i < NUM_OF_TX_DESCRIPTOR; i++) {
+ p_eth_desc_dsend[i].td2 = p_memory_top; /* TD2 TBA */
+ p_memory_top += SIZE_OF_BUFFER;
+ p_eth_desc_dsend[i].td1 = 0; /* TD1 TDL */
+ p_eth_desc_dsend[i].td0 = TD0_TFP_TOP_BOTTOM; /* TD0:1frame/1buf1buf, transmission disabled */
+ }
+ p_eth_desc_dsend[i - 1].td0 |= TD0_TDLE; /* Set the last descriptor */
+
+ /* Receive descriptor */
+ for (i = 0; i < NUM_OF_RX_DESCRIPTOR; i++) {
+ p_eth_desc_drecv[i].rd2 = p_memory_top; /* RD2 RBA */
+ p_memory_top += SIZE_OF_BUFFER;
+ p_eth_desc_drecv[i].rd1 = ((uint32_t)SIZE_OF_BUFFER << 16); /* RD1 RBL */
+ p_eth_desc_drecv[i].rd0 = RD0_RACT; /* RD0:reception enabled */
+ }
+ p_eth_desc_drecv[i - 1].rd0 |= RD0_RDLE; /* Set the last descriptor */
+
+ /* Initialize descriptor management information */
+ send_top_index = 0;
+ recv_top_index = 0;
+ rx_read_offset = 0;
+ tx_wite_offset = 0;
+ p_recv_end_desc = NULL;
+}
+
+static void lan_reg_set(int32_t link) {
+ /* MAC address setting */
+ ETHERMAHR0 = ((uint32_t)mac_addr[0] << 24)
+ | ((uint32_t)mac_addr[1] << 16)
+ | ((uint32_t)mac_addr[2] << 8)
+ | (uint32_t)mac_addr[3];
+ ETHERMALR0 = ((uint32_t)mac_addr[4] << 8)
+ | (uint32_t)mac_addr[5];
+
+ /* E-DMAC */
+ ETHERTDLAR0 = (uint32_t)&p_eth_desc_dsend[0];
+ ETHERRDLAR0 = (uint32_t)&p_eth_desc_drecv[0];
+ ETHERTDFAR0 = (uint32_t)&p_eth_desc_dsend[0];
+ ETHERRDFAR0 = (uint32_t)&p_eth_desc_drecv[0];
+ ETHERTDFXR0 = (uint32_t)&p_eth_desc_dsend[NUM_OF_TX_DESCRIPTOR - 1];
+ ETHERRDFXR0 = (uint32_t)&p_eth_desc_drecv[NUM_OF_RX_DESCRIPTOR - 1];
+ ETHERTDFFR0 |= 0x00000001; /* TDLF Transmit Descriptor Queue Last Flag : Last descriptor (1) */
+ ETHERRDFFR0 |= 0x00000001; /* RDLF Receive Descriptor Queue Last Flag : Last descriptor (1) */
+ ETHEREDMR0 |= 0x00000040; /* Little endian */
+ ETHERTRSCER0 &= ~0x0003009F; /* All clear */
+ ETHERTFTR0 &= ~0x000007FF; /* TFT[10:0] Transmit FIFO Threshold : Store and forward modes (H'000) */
+ ETHERFDR0 |= 0x00000707; /* Transmit FIFO Size:2048 bytes, Receive FIFO Size:2048 bytes */
+ ETHERRMCR0 |= 0x00000001; /* RNC Receive Enable Control : Continuous reception enabled (1) */
+ ETHERFCFTR0 &= ~0x001F00FF;
+ ETHERFCFTR0 |= 0x00070007;
+ ETHERRPADIR0 &= ~0x001FFFFF; /* Padding Size:No padding insertion, Padding Slot:Inserts at first byte */
+
+ /* E-MAC */
+ ETHERECMR0 &= ~0x04BF2063; /* All clear */
+ ETHERRFLR0 &= ~0x0003FFFF; /* RFL[17:0] Receive Frame Length : 1518 bytes (H'00000) */
+ ETHERAPR0 &= ~0x0000FFFF; /* AP[15:0] Automatic PAUSE : Flow control is disabled (H'0000) */
+ ETHERMPR0 &= ~0x0000FFFF; /* MP[15:0] Manual PAUSE : Flow control is disabled (H'0000) */
+ ETHERTPAUSER0 &= ~0x0000FFFF; /* Upper Limit for Automatic PAUSE Frame : Retransmit count is unlimited */
+ ETHERCSMR &= ~0xC000003F; /* The result of checksum is not written back to the receive descriptor */
+ if ((link == FULL_TX) || (link == FULL_10M) || (link == NEGO_FAIL)) {
+ ETHERECMR0 |= 0x00000002; /* Set to full-duplex mode */
+ } else {
+ ETHERECMR0 &= ~0x00000002; /* Set to half-duplex mode */
+ }
+
+ /* Interrupt-related */
+ if (p_recv_cb_fnc != NULL) {
+ ETHEREESR0 |= 0xFF7F009F; /* Clear all status (by writing 1) */
+ ETHEREESIPR0 |= 0x00040000; /* FR Frame Reception (1) */
+ ETHERECSR0 |= 0x00000011; /* Clear all status (clear by writing 1) */
+ ETHERECSIPR0 &= ~0x00000011; /* PFROIP Disable, ICDIP Disable */
+ InterruptHandlerRegister(ETHERI_IRQn, INT_Ether); /* Ethernet interrupt handler registration */
+ GIC_SetPriority(ETHERI_IRQn, Interrupt_priority); /* Ethernet interrupt priority */
+ GIC_EnableIRQ(ETHERI_IRQn); /* Enables the E-DMAC interrupt */
+ }
+
+ ETHERECMR0 |= 0x00000060; /* RE Enable, TE Enable */
+
+ /* Enable transmission/reception */
+ if ((start_stop == 1) && ((ETHEREDRRR0 & 0x00000001) == 0)) {
+ ETHEREDRRR0 |= 0x00000001; /* RR */
+ }
+}
+
+static uint16_t phy_reg_read(uint16_t reg_addr) {
+ uint16_t data;
+
+ mii_preamble();
+ mii_cmd(reg_addr, PHY_READ);
+ mii_z();
+ mii_reg_read(&data);
+ mii_z();
+
+ return data;
+}
+
+static void phy_reg_write(uint16_t reg_addr, uint16_t data) {
+ mii_preamble();
+ mii_cmd(reg_addr, PHY_WRITE);
+ mii_write_1();
+ mii_write_0();
+ mii_reg_write(data);
+ mii_z();
+}
+
+static void mii_preamble(void) {
+ int32_t i = 32;
+
+ for (i = 32; i > 0; i--) {
+ /* 1 is output via the MII (Media Independent Interface) block. */
+ mii_write_1();
+ }
+}
+
+static void mii_cmd(uint16_t reg_addr, uint32_t option) {
+ int32_t i;
+ uint16_t data = 0;
+
+ data |= (PHY_ST << 14); /* ST code */
+ data |= (option << 12); /* OP code */
+ data |= (PHY_ADDR << 7); /* PHY Address */
+ data |= (uint16_t)(reg_addr << 2); /* Reg Address */
+ for (i = 14; i > 0; i--) {
+ if ((data & 0x8000) == 0) {
+ mii_write_0();
+ } else {
+ mii_write_1();
+ }
+ data <<= 1;
+ }
+}
+
+static void mii_reg_read(uint16_t *data) {
+ int32_t i;
+ uint16_t reg_data = 0;
+
+ /* Data are read in one bit at a time */
+ for (i = 16; i > 0; i--) {
+ set_ether_pir(PIR0_MDC_LOW);
+ set_ether_pir(PIR0_MDC_HIGH);
+ reg_data <<= 1;
+ reg_data |= (uint16_t)((ETHERPIR0 & PIR0_MDI) >> 3); /* MDI read */
+ set_ether_pir(PIR0_MDC_HIGH);
+ set_ether_pir(PIR0_MDC_LOW);
+ }
+ *data = reg_data;
+}
+
+static void mii_reg_write(uint16_t data) {
+ int32_t i;
+
+ /* Data are written one bit at a time */
+ for (i = 16; i > 0; i--) {
+ if ((data & 0x8000) == 0) {
+ mii_write_0();
+ } else {
+ mii_write_1();
+ }
+ data <<= 1;
+ }
+}
+
+static void mii_z(void) {
+ set_ether_pir(PIR0_MDC_LOW);
+ set_ether_pir(PIR0_MDC_HIGH);
+ set_ether_pir(PIR0_MDC_HIGH);
+ set_ether_pir(PIR0_MDC_LOW);
+}
+
+static void mii_write_1(void) {
+ set_ether_pir(PIR0_MDO | PIR0_MMD);
+ set_ether_pir(PIR0_MDO | PIR0_MMD | PIR0_MDC);
+ set_ether_pir(PIR0_MDO | PIR0_MMD | PIR0_MDC);
+ set_ether_pir(PIR0_MDO | PIR0_MMD);
+}
+
+static void mii_write_0(void) {
+ set_ether_pir(PIR0_MMD);
+ set_ether_pir(PIR0_MMD | PIR0_MDC);
+ set_ether_pir(PIR0_MMD | PIR0_MDC);
+ set_ether_pir(PIR0_MMD);
+}
+
+static void set_ether_pir(uint32_t set_data) {
+ int32_t i;
+
+ for (i = MDC_WAIT; i > 0; i--) {
+ ETHERPIR0 = set_data;
+ }
+}
+
+static void wait_100us(int32_t wait_cnt) {
+ volatile int32_t j = LOOP_100us * wait_cnt;
+
+ while (--j) {
+ /* Do Nothing */
+ }
+}
projects / qmk_firmware.git / blobdiff