--- /dev/null
+/**************************************************************************//**\r
+ * @copyright (C) 2019 Nuvoton Technology Corp. All rights reserved.\r
+ * \r
+ * Redistribution and use in source and binary forms, with or without modification,\r
+ * are permitted provided that the following conditions are met:\r
+ * 1. Redistributions of source code must retain the above copyright notice,\r
+ * this list of conditions and the following disclaimer.\r
+ * 2. Redistributions in binary form must reproduce the above copyright notice,\r
+ * this list of conditions and the following disclaimer in the documentation\r
+ * and/or other materials provided with the distribution.\r
+ * 3. Neither the name of Nuvoton Technology Corp. nor the names of its contributors\r
+ * may be used to endorse or promote products derived from this software\r
+ * without specific prior written permission.\r
+ * \r
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"\r
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE\r
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE\r
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE\r
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL\r
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR\r
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER\r
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,\r
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE\r
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\r
+*****************************************************************************/\r
+#include "FreeRTOS.h"\r
+#include "list.h"\r
+#include "FreeRTOS_IP.h"\r
+\r
+#include "m480_eth.h"\r
+\r
+#define ETH_TRIGGER_RX() do{EMAC->RXST = 0;}while(0)\r
+#define ETH_TRIGGER_TX() do{EMAC->TXST = 0;}while(0)\r
+#define ETH_ENABLE_TX() do{EMAC->CTL |= EMAC_CTL_TXON;}while(0)\r
+#define ETH_ENABLE_RX() do{EMAC->CTL |= EMAC_CTL_RXON;}while(0)\r
+#define ETH_DISABLE_TX() do{EMAC->CTL &= ~EMAC_CTL_TXON;}while(0)\r
+#define ETH_DISABLE_RX() do{EMAC->CTL &= ~EMAC_CTL_RXON;}while(0)\r
+ \r
+\r
+struct eth_descriptor rx_desc[RX_DESCRIPTOR_NUM] __attribute__ ((aligned(4)));\r
+struct eth_descriptor tx_desc[TX_DESCRIPTOR_NUM] __attribute__ ((aligned(4)));\r
+#ifdef __ICCARM__\r
+#pragma data_alignment=4\r
+struct eth_descriptor rx_desc[RX_DESCRIPTOR_NUM];\r
+struct eth_descriptor tx_desc[TX_DESCRIPTOR_NUM];\r
+uint8_t rx_buf[RX_DESCRIPTOR_NUM][PACKET_BUFFER_SIZE];\r
+uint8_t tx_buf[TX_DESCRIPTOR_NUM][PACKET_BUFFER_SIZE];\r
+#else\r
+struct eth_descriptor rx_desc[RX_DESCRIPTOR_NUM] __attribute__ ((aligned(4)));\r
+struct eth_descriptor tx_desc[TX_DESCRIPTOR_NUM] __attribute__ ((aligned(4)));\r
+uint8_t rx_buf[RX_DESCRIPTOR_NUM][PACKET_BUFFER_SIZE] __attribute__ ((aligned(4)));\r
+uint8_t tx_buf[TX_DESCRIPTOR_NUM][PACKET_BUFFER_SIZE] __attribute__ ((aligned(4)));\r
+#endif\r
+struct eth_descriptor volatile *cur_tx_desc_ptr, *cur_rx_desc_ptr, *fin_tx_desc_ptr;\r
+\r
+\r
+// PTP source clock is 84MHz (Real chip using PLL). Each tick is 11.90ns\r
+// Assume we want to set each tick to 100ns.\r
+// Increase register = (100 * 2^31) / (10^9) = 214.71 =~ 215 = 0xD7\r
+// Addend register = 2^32 * tick_freq / (84MHz), where tick_freq = (2^31 / 215) MHz\r
+// From above equation, addend register = 2^63 / (84M * 215) ~= 510707200 = 0x1E70C600\r
+\r
+\r
+\r
+static void mdio_write(uint8_t addr, uint8_t reg, uint16_t val)\r
+{\r
+\r
+ EMAC->MIIMDAT = val;\r
+ EMAC->MIIMCTL = (addr << EMAC_MIIMCTL_PHYADDR_Pos) | reg | EMAC_MIIMCTL_BUSY_Msk | EMAC_MIIMCTL_WRITE_Msk | EMAC_MIIMCTL_MDCON_Msk;\r
+\r
+ while (EMAC->MIIMCTL & EMAC_MIIMCTL_BUSY_Msk);\r
+\r
+}\r
+\r
+\r
+static uint16_t mdio_read(uint8_t addr, uint8_t reg)\r
+{\r
+ EMAC->MIIMCTL = (addr << EMAC_MIIMCTL_PHYADDR_Pos) | reg | EMAC_MIIMCTL_BUSY_Msk | EMAC_MIIMCTL_MDCON_Msk;\r
+ while (EMAC->MIIMCTL & EMAC_MIIMCTL_BUSY_Msk);\r
+\r
+ return(EMAC->MIIMDAT);\r
+}\r
+\r
+static int reset_phy(void)\r
+{\r
+\r
+ uint16_t reg;\r
+ uint32_t delayCnt;\r
+\r
+\r
+ mdio_write(CONFIG_PHY_ADDR, MII_BMCR, BMCR_RESET);\r
+\r
+ delayCnt = 2000;\r
+ while(delayCnt-- > 0) {\r
+ if((mdio_read(CONFIG_PHY_ADDR, MII_BMCR) & BMCR_RESET) == 0)\r
+ break;\r
+\r
+ }\r
+\r
+ if(delayCnt == 0) {\r
+ NU_DEBUGF(("Reset phy failed\n"));\r
+ return(-1);\r
+ }\r
+\r
+ mdio_write(CONFIG_PHY_ADDR, MII_ADVERTISE, ADVERTISE_CSMA |\r
+ ADVERTISE_10HALF |\r
+ ADVERTISE_10FULL |\r
+ ADVERTISE_100HALF |\r
+ ADVERTISE_100FULL);\r
+\r
+ reg = mdio_read(CONFIG_PHY_ADDR, MII_BMCR);\r
+ mdio_write(CONFIG_PHY_ADDR, MII_BMCR, reg | BMCR_ANRESTART);\r
+\r
+ delayCnt = 200000;\r
+ while(delayCnt-- > 0) {\r
+ if((mdio_read(CONFIG_PHY_ADDR, MII_BMSR) & (BMSR_ANEGCOMPLETE | BMSR_LSTATUS))\r
+ == (BMSR_ANEGCOMPLETE | BMSR_LSTATUS))\r
+ break;\r
+ }\r
+\r
+ if(delayCnt == 0) {\r
+ NU_DEBUGF(("AN failed. Set to 100 FULL\n"));\r
+ EMAC->CTL |= (EMAC_CTL_OPMODE_Msk | EMAC_CTL_FUDUP_Msk);\r
+ return(-1);\r
+ } else {\r
+ reg = mdio_read(CONFIG_PHY_ADDR, MII_LPA);\r
+\r
+ if(reg & ADVERTISE_100FULL) {\r
+ NU_DEBUGF(("100 full\n"));\r
+ EMAC->CTL |= (EMAC_CTL_OPMODE_Msk | EMAC_CTL_FUDUP_Msk);\r
+ } else if(reg & ADVERTISE_100HALF) {\r
+ NU_DEBUGF(("100 half\n"));\r
+ EMAC->CTL = (EMAC->CTL & ~EMAC_CTL_FUDUP_Msk) | EMAC_CTL_OPMODE_Msk;\r
+ } else if(reg & ADVERTISE_10FULL) {\r
+ NU_DEBUGF(("10 full\n"));\r
+ EMAC->CTL = (EMAC->CTL & ~EMAC_CTL_OPMODE_Msk) | EMAC_CTL_FUDUP_Msk;\r
+ } else {\r
+ NU_DEBUGF(("10 half\n"));\r
+ EMAC->CTL &= ~(EMAC_CTL_OPMODE_Msk | EMAC_CTL_FUDUP_Msk);\r
+ }\r
+ }\r
+ FreeRTOS_printf(("PHY ID 1:0x%x\r\n", mdio_read(CONFIG_PHY_ADDR, MII_PHYSID1)));\r
+ FreeRTOS_printf(("PHY ID 2:0x%x\r\n", mdio_read(CONFIG_PHY_ADDR, MII_PHYSID2)));\r
+\r
+ return(0);\r
+}\r
+\r
+\r
+static void init_tx_desc(void)\r
+{\r
+ uint32_t i;\r
+\r
+\r
+ cur_tx_desc_ptr = fin_tx_desc_ptr = &tx_desc[0];\r
+\r
+ for(i = 0; i < TX_DESCRIPTOR_NUM; i++) {\r
+ tx_desc[i].status1 = TXFD_PADEN | TXFD_CRCAPP | TXFD_INTEN;\r
+ tx_desc[i].buf = &tx_buf[i][0];\r
+ tx_desc[i].status2 = 0;\r
+ tx_desc[i].next = &tx_desc[(i + 1) % TX_DESCRIPTOR_NUM];\r
+\r
+ }\r
+ EMAC->TXDSA = (unsigned int)&tx_desc[0];\r
+ return;\r
+}\r
+\r
+static void init_rx_desc(void)\r
+{\r
+ uint32_t i;\r
+\r
+\r
+ cur_rx_desc_ptr = &rx_desc[0];\r
+\r
+ for(i = 0; i < RX_DESCRIPTOR_NUM; i++) {\r
+ rx_desc[i].status1 = OWNERSHIP_EMAC;\r
+ rx_desc[i].buf = &rx_buf[i][0];\r
+ rx_desc[i].status2 = 0;\r
+ rx_desc[i].next = &rx_desc[(i + 1) % TX_DESCRIPTOR_NUM];\r
+ }\r
+ EMAC->RXDSA = (unsigned int)&rx_desc[0];\r
+ return;\r
+}\r
+\r
+void numaker_set_mac_addr(uint8_t *addr)\r
+{\r
+\r
+ EMAC->CAM0M = (addr[0] << 24) |\r
+ (addr[1] << 16) |\r
+ (addr[2] << 8) |\r
+ addr[3];\r
+\r
+ EMAC->CAM0L = (addr[4] << 24) |\r
+ (addr[5] << 16);\r
+\r
+\r
+}\r
+\r
+static void __eth_clk_pin_init()\r
+{\r
+ /* Unlock protected registers */\r
+ SYS_UnlockReg();\r
+\r
+ /* Enable IP clock */\r
+ CLK_EnableModuleClock(EMAC_MODULE);\r
+ \r
+ // Configure MDC clock rate to HCLK / (127 + 1) = 1.25 MHz if system is running at 160 MH\r
+ CLK_SetModuleClock(EMAC_MODULE, 0, CLK_CLKDIV3_EMAC(127));\r
+ \r
+ /* Update System Core Clock */\r
+ SystemCoreClockUpdate();\r
+ \r
+ /*---------------------------------------------------------------------------------------------------------*/\r
+ /* Init I/O Multi-function */\r
+ /*---------------------------------------------------------------------------------------------------------*/\r
+ // Configure RMII pins\r
+ SYS->GPA_MFPL &= ~(SYS_GPA_MFPL_PA6MFP_Msk | SYS_GPA_MFPL_PA7MFP_Msk);\r
+ SYS->GPA_MFPL |= SYS_GPA_MFPL_PA6MFP_EMAC_RMII_RXERR | SYS_GPA_MFPL_PA7MFP_EMAC_RMII_CRSDV;\r
+ SYS->GPC_MFPL &= ~(SYS_GPC_MFPL_PC6MFP_Msk | SYS_GPC_MFPL_PC7MFP_Msk);\r
+ SYS->GPC_MFPL |= SYS_GPC_MFPL_PC6MFP_EMAC_RMII_RXD1 | SYS_GPC_MFPL_PC7MFP_EMAC_RMII_RXD0;\r
+ SYS->GPC_MFPH &= ~SYS_GPC_MFPH_PC8MFP_Msk;\r
+ SYS->GPC_MFPH |= SYS_GPC_MFPH_PC8MFP_EMAC_RMII_REFCLK;\r
+ SYS->GPE_MFPH &= ~(SYS_GPE_MFPH_PE8MFP_Msk | SYS_GPE_MFPH_PE9MFP_Msk | SYS_GPE_MFPH_PE10MFP_Msk |\r
+ SYS_GPE_MFPH_PE11MFP_Msk | SYS_GPE_MFPH_PE12MFP_Msk);\r
+ SYS->GPE_MFPH |= SYS_GPE_MFPH_PE8MFP_EMAC_RMII_MDC |\r
+ SYS_GPE_MFPH_PE9MFP_EMAC_RMII_MDIO |\r
+ SYS_GPE_MFPH_PE10MFP_EMAC_RMII_TXD0 |\r
+ SYS_GPE_MFPH_PE11MFP_EMAC_RMII_TXD1 |\r
+ SYS_GPE_MFPH_PE12MFP_EMAC_RMII_TXEN;\r
+\r
+ // Enable high slew rate on all RMII TX output pins\r
+ PE->SLEWCTL = (GPIO_SLEWCTL_HIGH << GPIO_SLEWCTL_HSREN10_Pos) |\r
+ (GPIO_SLEWCTL_HIGH << GPIO_SLEWCTL_HSREN11_Pos) |\r
+ (GPIO_SLEWCTL_HIGH << GPIO_SLEWCTL_HSREN12_Pos);\r
+\r
+\r
+ /* Lock protected registers */\r
+ SYS_LockReg();\r
+\r
+\r
+}\r
+\r
+int numaker_eth_init(uint8_t *mac_addr)\r
+{\r
+ int ret = 0;\r
+ // init CLK & pins\r
+ __eth_clk_pin_init();\r
+ \r
+ // Reset MAC\r
+ EMAC->CTL = EMAC_CTL_RST_Msk;\r
+ while(EMAC->CTL & EMAC_CTL_RST_Msk) {}\r
+\r
+ init_tx_desc();\r
+ init_rx_desc();\r
+\r
+ numaker_set_mac_addr(mac_addr); // need to reconfigure hardware address 'cos we just RESET emc...\r
+\r
+\r
+ /* Configure the MAC interrupt enable register. */\r
+ EMAC->INTEN = EMAC_INTEN_RXIEN_Msk |\r
+ EMAC_INTEN_TXIEN_Msk |\r
+ EMAC_INTEN_RXGDIEN_Msk |\r
+ EMAC_INTEN_TXCPIEN_Msk |\r
+ EMAC_INTEN_RXBEIEN_Msk |\r
+ EMAC_INTEN_TXBEIEN_Msk |\r
+ EMAC_INTEN_RDUIEN_Msk |\r
+ EMAC_INTEN_TSALMIEN_Msk |\r
+ EMAC_INTEN_WOLIEN_Msk;\r
+\r
+ /* Configure the MAC control register. */\r
+ EMAC->CTL = EMAC_CTL_STRIPCRC_Msk | EMAC_CTL_RMIIEN_Msk;\r
+\r
+ /* Accept packets for us and all broadcast and multicast packets */\r
+ EMAC->CAMCTL = EMAC_CAMCTL_CMPEN_Msk |\r
+ EMAC_CAMCTL_AMP_Msk |\r
+ EMAC_CAMCTL_ABP_Msk;\r
+ EMAC->CAMEN = 1; // Enable CAM entry 0 \r
+\r
+ ret= reset_phy(); \r
+ \r
+ EMAC_ENABLE_RX();\r
+ EMAC_ENABLE_TX();\r
+ return ret;\r
+}\r
+\r
+\r
+\r
+void ETH_halt(void)\r
+{\r
+\r
+ EMAC->CTL &= ~(EMAC_CTL_RXON_Msk | EMAC_CTL_TXON_Msk);\r
+}\r
+\r
+unsigned int m_status;\r
+\r
+void EMAC_RX_IRQHandler(void)\r
+{\r
+// NU_DEBUGF(("%s ... \r\n", __FUNCTION__));\r
+ m_status = EMAC->INTSTS & 0xFFFF;\r
+ EMAC->INTSTS = m_status;\r
+ if (m_status & EMAC_INTSTS_RXBEIF_Msk) {\r
+ // Shouldn't goes here, unless descriptor corrupted\r
+ NU_DEBUGF(("RX descriptor corrupted \r\n"));\r
+ //return;\r
+ }\r
+ // FIX ME: for rx-event, to ack rx_isr into event queue\r
+ xNetworkCallback('R');\r
+}\r
+\r
+\r
+void numaker_eth_trigger_rx(void)\r
+{\r
+ ETH_TRIGGER_RX();\r
+}\r
+\r
+int numaker_eth_get_rx_buf(uint16_t *len, uint8_t **buf)\r
+{\r
+ unsigned int cur_entry, status;\r
+\r
+ cur_entry = EMAC->CRXDSA;\r
+ if ((cur_entry == (uint32_t)cur_rx_desc_ptr) && (!(m_status & EMAC_INTSTS_RDUIF_Msk))) // cur_entry may equal to cur_rx_desc_ptr if RDU occures\r
+ return -1;\r
+ status = cur_rx_desc_ptr->status1;\r
+\r
+ if(status & OWNERSHIP_EMAC)\r
+ return -1;\r
+\r
+ if (status & RXFD_RXGD) {\r
+ *buf = cur_rx_desc_ptr->buf;\r
+ *len = status & 0xFFFF;\r
+ }\r
+ return 0;\r
+} \r
+\r
+void numaker_eth_rx_next(void)\r
+{\r
+ cur_rx_desc_ptr->status1 = OWNERSHIP_EMAC;\r
+ cur_rx_desc_ptr = cur_rx_desc_ptr->next; \r
+} \r
+\r
+void EMAC_TX_IRQHandler(void)\r
+{\r
+ unsigned int cur_entry, status;\r
+\r
+ status = EMAC->INTSTS & 0xFFFF0000;\r
+ EMAC->INTSTS = status;\r
+ if(status & EMAC_INTSTS_TXBEIF_Msk) {\r
+ // Shouldn't goes here, unless descriptor corrupted\r
+ return;\r
+ }\r
+\r
+ cur_entry = EMAC->CTXDSA;\r
+\r
+ while (cur_entry != (uint32_t)fin_tx_desc_ptr) {\r
+\r
+ fin_tx_desc_ptr = fin_tx_desc_ptr->next;\r
+ }\r
+ // FIX ME: for tx-event, no-op at this stage\r
+ xNetworkCallback('T');\r
+}\r
+\r
+uint8_t *numaker_eth_get_tx_buf(void)\r
+{\r
+ if(cur_tx_desc_ptr->status1 & OWNERSHIP_EMAC)\r
+ return(NULL);\r
+ else\r
+ return(cur_tx_desc_ptr->buf);\r
+}\r
+\r
+void numaker_eth_trigger_tx(uint16_t length, void *p)\r
+{\r
+ struct eth_descriptor volatile *desc;\r
+ cur_tx_desc_ptr->status2 = (unsigned int)length;\r
+ desc = cur_tx_desc_ptr->next; // in case TX is transmitting and overwrite next pointer before we can update cur_tx_desc_ptr\r
+ cur_tx_desc_ptr->status1 |= OWNERSHIP_EMAC;\r
+ cur_tx_desc_ptr = desc;\r
+\r
+ ETH_TRIGGER_TX();\r
+\r
+}\r
+\r
+int numaker_eth_link_ok(void)\r
+{\r
+ /* first, a dummy read to latch */\r
+ mdio_read(CONFIG_PHY_ADDR, MII_BMSR);\r
+ if(mdio_read(CONFIG_PHY_ADDR, MII_BMSR) & BMSR_LSTATUS)\r
+ return 1;\r
+ return 0; \r
+}\r
+\r
+//void numaker_eth_set_cb(eth_callback_t eth_cb, void *userData)\r
+//{\r
+// nu_eth_txrx_cb = eth_cb;\r
+// nu_userData = userData;\r
+//}\r
+\r
+// Provide ethernet devices with a semi-unique MAC address\r
+void numaker_mac_address(uint8_t *mac)\r
+{\r
+ uint32_t uID1;\r
+ // Fetch word 0\r
+ uint32_t word0 = *(uint32_t *)0x7F804; // 2KB Data Flash at 0x7F800\r
+ // Fetch word 1\r
+ // we only want bottom 16 bits of word1 (MAC bits 32-47)\r
+ // and bit 9 forced to 1, bit 8 forced to 0\r
+ // Locally administered MAC, reduced conflicts\r
+ // http://en.wikipedia.org/wiki/MAC_address\r
+ uint32_t word1 = *(uint32_t *)0x7F800; // 2KB Data Flash at 0x7F800\r
+\r
+ if( word0 == 0xFFFFFFFF ) // Not burn any mac address at 1st 2 words of Data Flash\r
+ {\r
+ // with a semi-unique MAC address from the UUID\r
+ /* Enable FMC ISP function */\r
+ SYS_UnlockReg();\r
+ FMC_Open();\r
+ // = FMC_ReadUID(0);\r
+ uID1 = FMC_ReadUID(1);\r
+ word1 = (uID1 & 0x003FFFFF) | ((uID1 & 0x030000) << 6) >> 8;\r
+ word0 = ((FMC_ReadUID(0) >> 4) << 20) | ((uID1 & 0xFF)<<12) | (FMC_ReadUID(2) & 0xFFF);\r
+ /* Disable FMC ISP function */\r
+ FMC_Close();\r
+ /* Lock protected registers */\r
+ SYS_LockReg();\r
+ }\r
+\r
+ word1 |= 0x00000200;\r
+ word1 &= 0x0000FEFF;\r
+\r
+ mac[0] = (word1 & 0x0000ff00) >> 8; \r
+ mac[1] = (word1 & 0x000000ff);\r
+ mac[2] = (word0 & 0xff000000) >> 24;\r
+ mac[3] = (word0 & 0x00ff0000) >> 16;\r
+ mac[4] = (word0 & 0x0000ff00) >> 8;\r
+ mac[5] = (word0 & 0x000000ff);\r
+ \r
+ NU_DEBUGF(("mac address %02x-%02x-%02x-%02x-%02x-%02x \r\n", mac[0], mac[1],mac[2],mac[3],mac[4],mac[5]));\r
+}\r
+\r
+void numaker_eth_enable_interrupts(void) {\r
+ EMAC->INTEN |= EMAC_INTEN_RXIEN_Msk |\r
+ EMAC_INTEN_TXIEN_Msk ;\r
+ NVIC_EnableIRQ(EMAC_RX_IRQn);\r
+ NVIC_EnableIRQ(EMAC_TX_IRQn);\r
+}\r
+\r
+void numaker_eth_disable_interrupts(void) {\r
+ NVIC_DisableIRQ(EMAC_RX_IRQn);\r
+ NVIC_DisableIRQ(EMAC_TX_IRQn);\r
+}\r
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