Pascal Nysten / lwip

Adapted to Lora Semtech + Nucleo

Dependencies:   DebugLib

Dependents:   LoRaWAN-lmic-app LoRaWAN-lmic-app LoRaWAN-test-10secs LoRaPersonalizedDeviceForEverynet ... more

Fork of lwip_ppp_ethernet by Donatien Garnier

arch/lpc17_emac.c@0:8e01dca41002, 2012-05-24 (annotated)

Committer:
donatien
Date:
Thu May 24 15:53:48 2012 +0000
Revision:
0:8e01dca41002
Child:
2:1a87f74b8e3b
Merge with Emilio's LwIp

Who changed what in which revision?

UserRevisionLine numberNew contents of line
donatien 0:8e01dca41002 1 /**********************************************************************
donatien 0:8e01dca41002 2 * $Id$ lpc17_emac.c 2011-11-20
donatien 0:8e01dca41002 3 *//**
donatien 0:8e01dca41002 4 * @file lpc17_emac.c
donatien 0:8e01dca41002 5 * @brief LPC17 ethernet driver for LWIP
donatien 0:8e01dca41002 6 * @version 1.0
donatien 0:8e01dca41002 7 * @date 20. Nov. 2011
donatien 0:8e01dca41002 8 * @author NXP MCU SW Application Team
donatien 0:8e01dca41002 9 *
donatien 0:8e01dca41002 10 * Copyright(C) 2011, NXP Semiconductor
donatien 0:8e01dca41002 11 * All rights reserved.
donatien 0:8e01dca41002 12 *
donatien 0:8e01dca41002 13 ***********************************************************************
donatien 0:8e01dca41002 14 * Software that is described herein is for illustrative purposes only
donatien 0:8e01dca41002 15 * which provides customers with programming information regarding the
donatien 0:8e01dca41002 16 * products. This software is supplied "AS IS" without any warranties.
donatien 0:8e01dca41002 17 * NXP Semiconductors assumes no responsibility or liability for the
donatien 0:8e01dca41002 18 * use of the software, conveys no license or title under any patent,
donatien 0:8e01dca41002 19 * copyright, or mask work right to the product. NXP Semiconductors
donatien 0:8e01dca41002 20 * reserves the right to make changes in the software without
donatien 0:8e01dca41002 21 * notification. NXP Semiconductors also make no representation or
donatien 0:8e01dca41002 22 * warranty that such application will be suitable for the specified
donatien 0:8e01dca41002 23 * use without further testing or modification.
donatien 0:8e01dca41002 24 **********************************************************************/
donatien 0:8e01dca41002 25
donatien 0:8e01dca41002 26 #include "lwip/opt.h"
donatien 0:8e01dca41002 27 #include "lwip/sys.h"
donatien 0:8e01dca41002 28 #include "lwip/def.h"
donatien 0:8e01dca41002 29 #include "lwip/mem.h"
donatien 0:8e01dca41002 30 #include "lwip/pbuf.h"
donatien 0:8e01dca41002 31 #include "lwip/stats.h"
donatien 0:8e01dca41002 32 #include "lwip/snmp.h"
donatien 0:8e01dca41002 33 #include "netif/etharp.h"
donatien 0:8e01dca41002 34 #include "netif/ppp_oe.h"
donatien 0:8e01dca41002 35
donatien 0:8e01dca41002 36 #include "lpc17xx_emac.h"
donatien 0:8e01dca41002 37 #include "lpc17_emac.h"
donatien 0:8e01dca41002 38 #include "lpc_emac_config.h"
donatien 0:8e01dca41002 39 #include "lpc_phy.h"
donatien 0:8e01dca41002 40 #include "sys_arch.h"
donatien 0:8e01dca41002 41
donatien 0:8e01dca41002 42 #include "mbed_interface.h"
donatien 0:8e01dca41002 43 #include <string.h>
donatien 0:8e01dca41002 44
donatien 0:8e01dca41002 45 #ifndef LPC_EMAC_RMII
donatien 0:8e01dca41002 46 #error LPC_EMAC_RMII is not defined!
donatien 0:8e01dca41002 47 #endif
donatien 0:8e01dca41002 48
donatien 0:8e01dca41002 49 #if LPC_NUM_BUFF_TXDESCS < 2
donatien 0:8e01dca41002 50 #error LPC_NUM_BUFF_TXDESCS must be at least 2
donatien 0:8e01dca41002 51 #endif
donatien 0:8e01dca41002 52
donatien 0:8e01dca41002 53 #if LPC_NUM_BUFF_RXDESCS < 3
donatien 0:8e01dca41002 54 #error LPC_NUM_BUFF_RXDESCS must be at least 3
donatien 0:8e01dca41002 55 #endif
donatien 0:8e01dca41002 56
donatien 0:8e01dca41002 57 /** @defgroup lwip17xx_emac_DRIVER lpc17 EMAC driver for LWIP
donatien 0:8e01dca41002 58 * @ingroup lwip_emac
donatien 0:8e01dca41002 59 *
donatien 0:8e01dca41002 60 * @{
donatien 0:8e01dca41002 61 */
donatien 0:8e01dca41002 62
donatien 0:8e01dca41002 63 #if NO_SYS == 0
donatien 0:8e01dca41002 64 /** \brief Driver transmit and receive thread priorities
donatien 0:8e01dca41002 65 *
donatien 0:8e01dca41002 66 * Thread priorities for receive thread and TX cleanup thread. Alter
donatien 0:8e01dca41002 67 * to prioritize receive or transmit bandwidth. In a heavily loaded
donatien 0:8e01dca41002 68 * system or with LEIP_DEBUG enabled, the priorities might be better
donatien 0:8e01dca41002 69 * the same. */
donatien 0:8e01dca41002 70 #define tskRECPKT_PRIORITY (DEFAULT_THREAD_PRIO + 1)
donatien 0:8e01dca41002 71 #define tskTXCLEAN_PRIORITY (DEFAULT_THREAD_PRIO + 1)
donatien 0:8e01dca41002 72
donatien 0:8e01dca41002 73 #define tskRECPKT_STACKSIZE 768
donatien 0:8e01dca41002 74 #define tskTXCLEAN_STACKSIZE 512
donatien 0:8e01dca41002 75
donatien 0:8e01dca41002 76 /** \brief Debug output formatter lock define
donatien 0:8e01dca41002 77 *
donatien 0:8e01dca41002 78 * When using FreeRTOS and with LWIP_DEBUG enabled, enabling this
donatien 0:8e01dca41002 79 * define will allow RX debug messages to not interleave with the
donatien 0:8e01dca41002 80 * TX messages (so they are actually readable). Not enabling this
donatien 0:8e01dca41002 81 * define when the system is under load will cause the output to
donatien 0:8e01dca41002 82 * be unreadable. There is a small tradeoff in performance for this
donatien 0:8e01dca41002 83 * so use it only for debug. */
donatien 0:8e01dca41002 84 //#define LOCK_RX_THREAD
donatien 0:8e01dca41002 85
donatien 0:8e01dca41002 86 /** \brief Receive group interrupts
donatien 0:8e01dca41002 87 */
donatien 0:8e01dca41002 88 #define RXINTGROUP (EMAC_INT_RX_OVERRUN | EMAC_INT_RX_ERR | EMAC_INT_RX_DONE)
donatien 0:8e01dca41002 89
donatien 0:8e01dca41002 90 /** \brief Transmit group interrupts
donatien 0:8e01dca41002 91 */
donatien 0:8e01dca41002 92 #define TXINTGROUP (EMAC_INT_TX_UNDERRUN | EMAC_INT_TX_ERR | EMAC_INT_TX_DONE)
donatien 0:8e01dca41002 93 #else
donatien 0:8e01dca41002 94 #define RXINTGROUP 0
donatien 0:8e01dca41002 95 #define TXINTGROUP 0
donatien 0:8e01dca41002 96 #endif
donatien 0:8e01dca41002 97
donatien 0:8e01dca41002 98 /** \brief Structure of a TX/RX descriptor
donatien 0:8e01dca41002 99 */
donatien 0:8e01dca41002 100 typedef struct
donatien 0:8e01dca41002 101 {
donatien 0:8e01dca41002 102 volatile u32_t packet; /**< Pointer to buffer */
donatien 0:8e01dca41002 103 volatile u32_t control; /**< Control word */
donatien 0:8e01dca41002 104 } LPC_TXRX_DESC_T;
donatien 0:8e01dca41002 105
donatien 0:8e01dca41002 106 /** \brief Structure of a RX status entry
donatien 0:8e01dca41002 107 */
donatien 0:8e01dca41002 108 typedef struct
donatien 0:8e01dca41002 109 {
donatien 0:8e01dca41002 110 volatile u32_t statusinfo; /**< RX status word */
donatien 0:8e01dca41002 111 volatile u32_t statushashcrc; /**< RX hash CRC */
donatien 0:8e01dca41002 112 } LPC_TXRX_STATUS_T;
donatien 0:8e01dca41002 113
donatien 0:8e01dca41002 114 /* LPC EMAC driver data structure */
donatien 0:8e01dca41002 115 struct lpc_enetdata {
donatien 0:8e01dca41002 116 /* prxs must be 8 byte aligned! */
donatien 0:8e01dca41002 117 LPC_TXRX_STATUS_T prxs[LPC_NUM_BUFF_RXDESCS]; /**< Pointer to RX statuses */
donatien 0:8e01dca41002 118 struct netif *netif; /**< Reference back to LWIP parent netif */
donatien 0:8e01dca41002 119 LPC_TXRX_DESC_T ptxd[LPC_NUM_BUFF_TXDESCS]; /**< Pointer to TX descriptor list */
donatien 0:8e01dca41002 120 LPC_TXRX_STATUS_T ptxs[LPC_NUM_BUFF_TXDESCS]; /**< Pointer to TX statuses */
donatien 0:8e01dca41002 121 LPC_TXRX_DESC_T prxd[LPC_NUM_BUFF_RXDESCS]; /**< Pointer to RX descriptor list */
donatien 0:8e01dca41002 122 struct pbuf *rxb[LPC_NUM_BUFF_RXDESCS]; /**< RX pbuf pointer list, zero-copy mode */
donatien 0:8e01dca41002 123 u32_t rx_fill_desc_index; /**< RX descriptor next available index */
donatien 0:8e01dca41002 124 volatile u32_t rx_free_descs; /**< Count of free RX descriptors */
donatien 0:8e01dca41002 125 struct pbuf *txb[LPC_NUM_BUFF_TXDESCS]; /**< TX pbuf pointer list, zero-copy mode */
donatien 0:8e01dca41002 126 u32_t lpc_last_tx_idx; /**< TX last descriptor index, zero-copy mode */
donatien 0:8e01dca41002 127 #if NO_SYS == 0
donatien 0:8e01dca41002 128 sys_sem_t RxSem; /**< RX receive thread wakeup semaphore */
donatien 0:8e01dca41002 129 sys_sem_t TxCleanSem; /**< TX cleanup thread wakeup semaphore */
donatien 0:8e01dca41002 130 sys_mutex_t TXLockMutex; /**< TX critical section mutex */
donatien 0:8e01dca41002 131 sys_sem_t xTXDCountSem; /**< TX free buffer counting semaphore */
donatien 0:8e01dca41002 132 #endif
donatien 0:8e01dca41002 133 };
donatien 0:8e01dca41002 134
donatien 0:8e01dca41002 135 /** \brief LPC EMAC driver work data
donatien 0:8e01dca41002 136 */
donatien 0:8e01dca41002 137 ALIGNED(8) struct lpc_enetdata lpc_enetdata;
donatien 0:8e01dca41002 138
donatien 0:8e01dca41002 139 /* Write a value via the MII link (non-blocking) */
donatien 0:8e01dca41002 140 void lpc_mii_write_noblock(u32_t PhyReg, u32_t Value)
donatien 0:8e01dca41002 141 {
donatien 0:8e01dca41002 142 /* Write value at PHY address and register */
donatien 0:8e01dca41002 143 LPC_EMAC->MADR = (LPC_PHYDEF_PHYADDR << 8) | PhyReg;
donatien 0:8e01dca41002 144 LPC_EMAC->MWTD = Value;
donatien 0:8e01dca41002 145 }
donatien 0:8e01dca41002 146
donatien 0:8e01dca41002 147 /* Write a value via the MII link (blocking) */
donatien 0:8e01dca41002 148 err_t lpc_mii_write(u32_t PhyReg, u32_t Value)
donatien 0:8e01dca41002 149 {
donatien 0:8e01dca41002 150 u32_t mst = 250;
donatien 0:8e01dca41002 151 err_t sts = ERR_OK;
donatien 0:8e01dca41002 152
donatien 0:8e01dca41002 153 /* Write value at PHY address and register */
donatien 0:8e01dca41002 154 lpc_mii_write_noblock(PhyReg, Value);
donatien 0:8e01dca41002 155
donatien 0:8e01dca41002 156 /* Wait for unbusy status */
donatien 0:8e01dca41002 157 while (mst > 0) {
donatien 0:8e01dca41002 158 sts = LPC_EMAC->MIND;
donatien 0:8e01dca41002 159 if ((sts & EMAC_MIND_BUSY) == 0)
donatien 0:8e01dca41002 160 mst = 0;
donatien 0:8e01dca41002 161 else {
donatien 0:8e01dca41002 162 mst--;
donatien 0:8e01dca41002 163 osDelay(1);
donatien 0:8e01dca41002 164 }
donatien 0:8e01dca41002 165 }
donatien 0:8e01dca41002 166
donatien 0:8e01dca41002 167 if (sts != 0)
donatien 0:8e01dca41002 168 sts = ERR_TIMEOUT;
donatien 0:8e01dca41002 169
donatien 0:8e01dca41002 170 return sts;
donatien 0:8e01dca41002 171 }
donatien 0:8e01dca41002 172
donatien 0:8e01dca41002 173 /* Reads current MII link busy status */
donatien 0:8e01dca41002 174 u32_t lpc_mii_is_busy(void)
donatien 0:8e01dca41002 175 {
donatien 0:8e01dca41002 176 return (u32_t) (LPC_EMAC->MIND & EMAC_MIND_BUSY);
donatien 0:8e01dca41002 177 }
donatien 0:8e01dca41002 178
donatien 0:8e01dca41002 179 /* Starts a read operation via the MII link (non-blocking) */
donatien 0:8e01dca41002 180 u32_t lpc_mii_read_data(void)
donatien 0:8e01dca41002 181 {
donatien 0:8e01dca41002 182 u32_t data = LPC_EMAC->MRDD;
donatien 0:8e01dca41002 183 LPC_EMAC->MCMD = 0;
donatien 0:8e01dca41002 184
donatien 0:8e01dca41002 185 return data;
donatien 0:8e01dca41002 186 }
donatien 0:8e01dca41002 187
donatien 0:8e01dca41002 188 /* Starts a read operation via the MII link (non-blocking) */
donatien 0:8e01dca41002 189 void lpc_mii_read_noblock(u32_t PhyReg)
donatien 0:8e01dca41002 190 {
donatien 0:8e01dca41002 191 /* Read value at PHY address and register */
donatien 0:8e01dca41002 192 LPC_EMAC->MADR = (LPC_PHYDEF_PHYADDR << 8) | PhyReg;
donatien 0:8e01dca41002 193 LPC_EMAC->MCMD = EMAC_MCMD_READ;
donatien 0:8e01dca41002 194 }
donatien 0:8e01dca41002 195
donatien 0:8e01dca41002 196 /* Read a value via the MII link (blocking) */
donatien 0:8e01dca41002 197 err_t lpc_mii_read(u32_t PhyReg, u32_t *data)
donatien 0:8e01dca41002 198 {
donatien 0:8e01dca41002 199 u32_t mst = 250;
donatien 0:8e01dca41002 200 err_t sts = ERR_OK;
donatien 0:8e01dca41002 201
donatien 0:8e01dca41002 202 /* Read value at PHY address and register */
donatien 0:8e01dca41002 203 lpc_mii_read_noblock(PhyReg);
donatien 0:8e01dca41002 204
donatien 0:8e01dca41002 205 /* Wait for unbusy status */
donatien 0:8e01dca41002 206 while (mst > 0) {
donatien 0:8e01dca41002 207 sts = LPC_EMAC->MIND & ~EMAC_MIND_MII_LINK_FAIL;
donatien 0:8e01dca41002 208 if ((sts & EMAC_MIND_BUSY) == 0) {
donatien 0:8e01dca41002 209 mst = 0;
donatien 0:8e01dca41002 210 *data = LPC_EMAC->MRDD;
donatien 0:8e01dca41002 211 } else {
donatien 0:8e01dca41002 212 mst--;
donatien 0:8e01dca41002 213 osDelay(1);
donatien 0:8e01dca41002 214 }
donatien 0:8e01dca41002 215 }
donatien 0:8e01dca41002 216
donatien 0:8e01dca41002 217 LPC_EMAC->MCMD = 0;
donatien 0:8e01dca41002 218
donatien 0:8e01dca41002 219 if (sts != 0)
donatien 0:8e01dca41002 220 sts = ERR_TIMEOUT;
donatien 0:8e01dca41002 221
donatien 0:8e01dca41002 222 return sts;
donatien 0:8e01dca41002 223 }
donatien 0:8e01dca41002 224
donatien 0:8e01dca41002 225 /** \brief Queues a pbuf into the RX descriptor list
donatien 0:8e01dca41002 226 *
donatien 0:8e01dca41002 227 * \param[in] lpc_enetif Pointer to the drvier data structure
donatien 0:8e01dca41002 228 * \param[in] p Pointer to pbuf to queue
donatien 0:8e01dca41002 229 */
donatien 0:8e01dca41002 230 static void lpc_rxqueue_pbuf(struct lpc_enetdata *lpc_enetif, struct pbuf *p)
donatien 0:8e01dca41002 231 {
donatien 0:8e01dca41002 232 u32_t idx;
donatien 0:8e01dca41002 233
donatien 0:8e01dca41002 234 /* Get next free descriptor index */
donatien 0:8e01dca41002 235 idx = lpc_enetif->rx_fill_desc_index;
donatien 0:8e01dca41002 236
donatien 0:8e01dca41002 237 /* Setup descriptor and clear statuses */
donatien 0:8e01dca41002 238 lpc_enetif->prxd[idx].control = EMAC_RCTRL_INT | ((u32_t) (p->len - 1));
donatien 0:8e01dca41002 239 lpc_enetif->prxd[idx].packet = (u32_t) p->payload;
donatien 0:8e01dca41002 240 lpc_enetif->prxs[idx].statusinfo = 0xFFFFFFFF;
donatien 0:8e01dca41002 241 lpc_enetif->prxs[idx].statushashcrc = 0xFFFFFFFF;
donatien 0:8e01dca41002 242
donatien 0:8e01dca41002 243 /* Save pbuf pointer for push to network layer later */
donatien 0:8e01dca41002 244 lpc_enetif->rxb[idx] = p;
donatien 0:8e01dca41002 245
donatien 0:8e01dca41002 246 /* Wrap at end of descriptor list */
donatien 0:8e01dca41002 247 idx++;
donatien 0:8e01dca41002 248 if (idx >= LPC_NUM_BUFF_RXDESCS)
donatien 0:8e01dca41002 249 idx = 0;
donatien 0:8e01dca41002 250
donatien 0:8e01dca41002 251 /* Queue descriptor(s) */
donatien 0:8e01dca41002 252 lpc_enetif->rx_free_descs -= 1;
donatien 0:8e01dca41002 253 lpc_enetif->rx_fill_desc_index = idx;
donatien 0:8e01dca41002 254 LPC_EMAC->RxConsumeIndex = idx;
donatien 0:8e01dca41002 255
donatien 0:8e01dca41002 256 LWIP_DEBUGF(UDP_LPC_EMAC | LWIP_DBG_TRACE,
donatien 0:8e01dca41002 257 ("lpc_rxqueue_pbuf: pbuf packet queued: %p (free desc=%d)\n", p,
donatien 0:8e01dca41002 258 lpc_enetif->rx_free_descs));
donatien 0:8e01dca41002 259 }
donatien 0:8e01dca41002 260
donatien 0:8e01dca41002 261 /** \brief Attempt to allocate and requeue a new pbuf for RX
donatien 0:8e01dca41002 262 *
donatien 0:8e01dca41002 263 * \param[in] netif Pointer to the netif structure
donatien 0:8e01dca41002 264 * \returns 1 if a packet was allocated and requeued, otherwise 0
donatien 0:8e01dca41002 265 */
donatien 0:8e01dca41002 266 s32_t lpc_rx_queue(struct netif *netif)
donatien 0:8e01dca41002 267 {
donatien 0:8e01dca41002 268 struct lpc_enetdata *lpc_enetif = netif->state;
donatien 0:8e01dca41002 269 struct pbuf *p;
donatien 0:8e01dca41002 270 s32_t queued = 0;
donatien 0:8e01dca41002 271
donatien 0:8e01dca41002 272 /* Attempt to requeue as many packets as possible */
donatien 0:8e01dca41002 273 while (lpc_enetif->rx_free_descs > 0) {
donatien 0:8e01dca41002 274 /* Allocate a pbuf from the pool. We need to allocate at the
donatien 0:8e01dca41002 275 maximum size as we don't know the size of the yet to be
donatien 0:8e01dca41002 276 received packet. */
donatien 0:8e01dca41002 277 p = pbuf_alloc(PBUF_RAW, (u16_t) EMAC_ETH_MAX_FLEN, PBUF_RAM);
donatien 0:8e01dca41002 278 if (p == NULL) {
donatien 0:8e01dca41002 279 LWIP_DEBUGF(UDP_LPC_EMAC | LWIP_DBG_TRACE,
donatien 0:8e01dca41002 280 ("lpc_rx_queue: could not allocate RX pbuf (free desc=%d)\n",
donatien 0:8e01dca41002 281 lpc_enetif->rx_free_descs));
donatien 0:8e01dca41002 282 //Kludge -- appears to crash otherwise
donatien 0:8e01dca41002 283 //osDelay(10);
donatien 0:8e01dca41002 284 //continue;
donatien 0:8e01dca41002 285
donatien 0:8e01dca41002 286 return queued;
donatien 0:8e01dca41002 287 }
donatien 0:8e01dca41002 288
donatien 0:8e01dca41002 289 /* pbufs allocated from the RAM pool should be non-chained. */
donatien 0:8e01dca41002 290 LWIP_ASSERT("lpc_rx_queue: pbuf is not contiguous (chained)",
donatien 0:8e01dca41002 291 pbuf_clen(p) <= 1);
donatien 0:8e01dca41002 292
donatien 0:8e01dca41002 293 /* Queue packet */
donatien 0:8e01dca41002 294 lpc_rxqueue_pbuf(lpc_enetif, p);
donatien 0:8e01dca41002 295
donatien 0:8e01dca41002 296 /* Update queued count */
donatien 0:8e01dca41002 297 queued++;
donatien 0:8e01dca41002 298 }
donatien 0:8e01dca41002 299
donatien 0:8e01dca41002 300 return queued;
donatien 0:8e01dca41002 301 }
donatien 0:8e01dca41002 302
donatien 0:8e01dca41002 303 /** \brief Sets up the RX descriptor ring buffers.
donatien 0:8e01dca41002 304 *
donatien 0:8e01dca41002 305 * This function sets up the descriptor list used for receive packets.
donatien 0:8e01dca41002 306 *
donatien 0:8e01dca41002 307 * \param[in] lpc_enetif Pointer to driver data structure
donatien 0:8e01dca41002 308 * \returns Always returns ERR_OK
donatien 0:8e01dca41002 309 */
donatien 0:8e01dca41002 310 static err_t lpc_rx_setup(struct lpc_enetdata *lpc_enetif)
donatien 0:8e01dca41002 311 {
donatien 0:8e01dca41002 312 s32_t idx;
donatien 0:8e01dca41002 313
donatien 0:8e01dca41002 314 /* Setup pointers to RX structures */
donatien 0:8e01dca41002 315 LPC_EMAC->RxDescriptor = (u32_t) &lpc_enetif->prxd[0];
donatien 0:8e01dca41002 316 LPC_EMAC->RxStatus = (u32_t) &lpc_enetif->prxs[0];
donatien 0:8e01dca41002 317 LPC_EMAC->RxDescriptorNumber = LPC_NUM_BUFF_RXDESCS - 1;
donatien 0:8e01dca41002 318
donatien 0:8e01dca41002 319 lpc_enetif->rx_free_descs = LPC_NUM_BUFF_RXDESCS;
donatien 0:8e01dca41002 320 lpc_enetif->rx_fill_desc_index = 0;
donatien 0:8e01dca41002 321
donatien 0:8e01dca41002 322 /* Build RX buffer and descriptors */
donatien 0:8e01dca41002 323 lpc_rx_queue(lpc_enetif->netif);
donatien 0:8e01dca41002 324
donatien 0:8e01dca41002 325 return ERR_OK;
donatien 0:8e01dca41002 326 }
donatien 0:8e01dca41002 327
donatien 0:8e01dca41002 328 /** \brief Allocates a pbuf and returns the data from the incoming packet.
donatien 0:8e01dca41002 329 *
donatien 0:8e01dca41002 330 * \param[in] netif the lwip network interface structure for this lpc_enetif
donatien 0:8e01dca41002 331 * \return a pbuf filled with the received packet (including MAC header)
donatien 0:8e01dca41002 332 * NULL on memory error
donatien 0:8e01dca41002 333 */
donatien 0:8e01dca41002 334 static struct pbuf *lpc_low_level_input(struct netif *netif)
donatien 0:8e01dca41002 335 {
donatien 0:8e01dca41002 336 struct lpc_enetdata *lpc_enetif = netif->state;
donatien 0:8e01dca41002 337 struct pbuf *p = NULL, *q;
donatien 0:8e01dca41002 338 u32_t idx, length;
donatien 0:8e01dca41002 339 u8_t *src;
donatien 0:8e01dca41002 340
donatien 0:8e01dca41002 341 #ifdef LOCK_RX_THREAD
donatien 0:8e01dca41002 342 #if NO_SYS == 0
donatien 0:8e01dca41002 343 /* Get exclusive access */
donatien 0:8e01dca41002 344 sys_mutex_lock(&lpc_enetif->TXLockMutex);
donatien 0:8e01dca41002 345 #endif
donatien 0:8e01dca41002 346 #endif
donatien 0:8e01dca41002 347
donatien 0:8e01dca41002 348 /* Monitor RX overrun status. This should never happen unless
donatien 0:8e01dca41002 349 (possibly) the internal bus is behing held up by something.
donatien 0:8e01dca41002 350 Unless your system is running at a very low clock speed or
donatien 0:8e01dca41002 351 there are possibilities that the internal buses may be held
donatien 0:8e01dca41002 352 up for a long time, this can probably safely be removed. */
donatien 0:8e01dca41002 353 if (LPC_EMAC->IntStatus & EMAC_INT_RX_OVERRUN) {
donatien 0:8e01dca41002 354 LINK_STATS_INC(link.err);
donatien 0:8e01dca41002 355 LINK_STATS_INC(link.drop);
donatien 0:8e01dca41002 356
donatien 0:8e01dca41002 357 /* Temporarily disable RX */
donatien 0:8e01dca41002 358 LPC_EMAC->MAC1 &= ~EMAC_MAC1_REC_EN;
donatien 0:8e01dca41002 359
donatien 0:8e01dca41002 360 /* Reset the RX side */
donatien 0:8e01dca41002 361 LPC_EMAC->MAC1 |= EMAC_MAC1_RES_RX;
donatien 0:8e01dca41002 362 LPC_EMAC->IntClear = EMAC_INT_RX_OVERRUN;
donatien 0:8e01dca41002 363
donatien 0:8e01dca41002 364 /* De-allocate all queued RX pbufs */
donatien 0:8e01dca41002 365 for (idx = 0; idx < LPC_NUM_BUFF_RXDESCS; idx++) {
donatien 0:8e01dca41002 366 if (lpc_enetif->rxb[idx] != NULL) {
donatien 0:8e01dca41002 367 pbuf_free(lpc_enetif->rxb[idx]);
donatien 0:8e01dca41002 368 lpc_enetif->rxb[idx] = NULL;
donatien 0:8e01dca41002 369 }
donatien 0:8e01dca41002 370 }
donatien 0:8e01dca41002 371
donatien 0:8e01dca41002 372 /* Start RX side again */
donatien 0:8e01dca41002 373 lpc_rx_setup(lpc_enetif);
donatien 0:8e01dca41002 374
donatien 0:8e01dca41002 375 /* Re-enable RX */
donatien 0:8e01dca41002 376 LPC_EMAC->MAC1 |= EMAC_MAC1_REC_EN;
donatien 0:8e01dca41002 377
donatien 0:8e01dca41002 378 #ifdef LOCK_RX_THREAD
donatien 0:8e01dca41002 379 #if NO_SYS == 0
donatien 0:8e01dca41002 380 sys_mutex_unlock(&lpc_enetif->TXLockMutex);
donatien 0:8e01dca41002 381 #endif
donatien 0:8e01dca41002 382 #endif
donatien 0:8e01dca41002 383
donatien 0:8e01dca41002 384 return NULL;
donatien 0:8e01dca41002 385 }
donatien 0:8e01dca41002 386
donatien 0:8e01dca41002 387 /* Determine if a frame has been received */
donatien 0:8e01dca41002 388 length = 0;
donatien 0:8e01dca41002 389 idx = LPC_EMAC->RxConsumeIndex;
donatien 0:8e01dca41002 390
donatien 0:8e01dca41002 391 if (LPC_EMAC->RxProduceIndex != idx) {
donatien 0:8e01dca41002 392 /* Handle errors */
donatien 0:8e01dca41002 393 if (lpc_enetif->prxs[idx].statusinfo & (EMAC_RINFO_CRC_ERR |
donatien 0:8e01dca41002 394 EMAC_RINFO_SYM_ERR | EMAC_RINFO_ALIGN_ERR | EMAC_RINFO_LEN_ERR)) {
donatien 0:8e01dca41002 395 #if LINK_STATS
donatien 0:8e01dca41002 396 if (lpc_enetif->prxs[idx].statusinfo & (EMAC_RINFO_CRC_ERR |
donatien 0:8e01dca41002 397 EMAC_RINFO_SYM_ERR | EMAC_RINFO_ALIGN_ERR))
donatien 0:8e01dca41002 398 LINK_STATS_INC(link.chkerr);
donatien 0:8e01dca41002 399 if (lpc_enetif->prxs[idx].statusinfo & EMAC_RINFO_LEN_ERR)
donatien 0:8e01dca41002 400 LINK_STATS_INC(link.lenerr);
donatien 0:8e01dca41002 401 #endif
donatien 0:8e01dca41002 402
donatien 0:8e01dca41002 403 /* Drop the frame */
donatien 0:8e01dca41002 404 LINK_STATS_INC(link.drop);
donatien 0:8e01dca41002 405
donatien 0:8e01dca41002 406 //FIX moved up otherwise it's meaningless
donatien 0:8e01dca41002 407 LWIP_DEBUGF(UDP_LPC_EMAC | LWIP_DBG_TRACE,
donatien 0:8e01dca41002 408 ("lpc_low_level_input: Packet dropped with errors (0x%x)\n",
donatien 0:8e01dca41002 409 lpc_enetif->prxs[idx].statusinfo));
donatien 0:8e01dca41002 410
donatien 0:8e01dca41002 411 /* Re-queue the pbuf for receive */
donatien 0:8e01dca41002 412 lpc_enetif->rx_free_descs++;
donatien 0:8e01dca41002 413 p = lpc_enetif->rxb[idx];
donatien 0:8e01dca41002 414 lpc_enetif->rxb[idx] = NULL;
donatien 0:8e01dca41002 415 lpc_rxqueue_pbuf(lpc_enetif, p);
donatien 0:8e01dca41002 416
donatien 0:8e01dca41002 417 } else {
donatien 0:8e01dca41002 418 /* A packet is waiting, get length */
donatien 0:8e01dca41002 419 length = (lpc_enetif->prxs[idx].statusinfo & 0x7FF) + 1;
donatien 0:8e01dca41002 420
donatien 0:8e01dca41002 421 /* Zero-copy */
donatien 0:8e01dca41002 422 p = lpc_enetif->rxb[idx];
donatien 0:8e01dca41002 423 p->len = (u16_t) length;
donatien 0:8e01dca41002 424
donatien 0:8e01dca41002 425 /* Free pbuf from desriptor */
donatien 0:8e01dca41002 426 lpc_enetif->rxb[idx] = NULL;
donatien 0:8e01dca41002 427 lpc_enetif->rx_free_descs++;
donatien 0:8e01dca41002 428
donatien 0:8e01dca41002 429 LWIP_DEBUGF(UDP_LPC_EMAC | LWIP_DBG_TRACE,
donatien 0:8e01dca41002 430 ("lpc_low_level_input: Packet received: %p, size %d (index=%d)\n",
donatien 0:8e01dca41002 431 p, length, idx));
donatien 0:8e01dca41002 432
donatien 0:8e01dca41002 433 /* Save size */
donatien 0:8e01dca41002 434 p->tot_len = (u16_t) length;
donatien 0:8e01dca41002 435 LINK_STATS_INC(link.recv);
donatien 0:8e01dca41002 436
donatien 0:8e01dca41002 437 /* Queue new buffer(s) */
donatien 0:8e01dca41002 438 lpc_rx_queue(lpc_enetif->netif);
donatien 0:8e01dca41002 439 }
donatien 0:8e01dca41002 440 }
donatien 0:8e01dca41002 441
donatien 0:8e01dca41002 442 #ifdef LOCK_RX_THREAD
donatien 0:8e01dca41002 443 #if NO_SYS == 0
donatien 0:8e01dca41002 444 sys_mutex_unlock(&lpc_enetif->TXLockMutex);
donatien 0:8e01dca41002 445 #endif
donatien 0:8e01dca41002 446 #endif
donatien 0:8e01dca41002 447
donatien 0:8e01dca41002 448 return p;
donatien 0:8e01dca41002 449 }
donatien 0:8e01dca41002 450
donatien 0:8e01dca41002 451 /** \brief Attempt to read a packet from the EMAC interface.
donatien 0:8e01dca41002 452 *
donatien 0:8e01dca41002 453 * \param[in] netif the lwip network interface structure for this lpc_enetif
donatien 0:8e01dca41002 454 */
donatien 0:8e01dca41002 455 void lpc_enetif_input(struct netif *netif)
donatien 0:8e01dca41002 456 {
donatien 0:8e01dca41002 457 struct eth_hdr *ethhdr;
donatien 0:8e01dca41002 458 struct pbuf *p;
donatien 0:8e01dca41002 459
donatien 0:8e01dca41002 460 /* move received packet into a new pbuf */
donatien 0:8e01dca41002 461 p = lpc_low_level_input(netif);
donatien 0:8e01dca41002 462 if (p == NULL)
donatien 0:8e01dca41002 463 return;
donatien 0:8e01dca41002 464
donatien 0:8e01dca41002 465 /* points to packet payload, which starts with an Ethernet header */
donatien 0:8e01dca41002 466 ethhdr = p->payload;
donatien 0:8e01dca41002 467
donatien 0:8e01dca41002 468 switch (htons(ethhdr->type)) {
donatien 0:8e01dca41002 469 case ETHTYPE_IP:
donatien 0:8e01dca41002 470 case ETHTYPE_ARP:
donatien 0:8e01dca41002 471 #if PPPOE_SUPPORT
donatien 0:8e01dca41002 472 case ETHTYPE_PPPOEDISC:
donatien 0:8e01dca41002 473 case ETHTYPE_PPPOE:
donatien 0:8e01dca41002 474 #endif /* PPPOE_SUPPORT */
donatien 0:8e01dca41002 475 /* full packet send to tcpip_thread to process */
donatien 0:8e01dca41002 476 if (netif->input(p, netif) != ERR_OK) {
donatien 0:8e01dca41002 477 LWIP_DEBUGF(NETIF_DEBUG, ("lpc_enetif_input: IP input error\n"));
donatien 0:8e01dca41002 478 /* Free buffer */
donatien 0:8e01dca41002 479 pbuf_free(p);
donatien 0:8e01dca41002 480 }
donatien 0:8e01dca41002 481 break;
donatien 0:8e01dca41002 482
donatien 0:8e01dca41002 483 default:
donatien 0:8e01dca41002 484 /* Return buffer */
donatien 0:8e01dca41002 485 pbuf_free(p);
donatien 0:8e01dca41002 486 break;
donatien 0:8e01dca41002 487 }
donatien 0:8e01dca41002 488 }
donatien 0:8e01dca41002 489
donatien 0:8e01dca41002 490 /** \brief Determine if the passed address is usable for the ethernet
donatien 0:8e01dca41002 491 * DMA controller.
donatien 0:8e01dca41002 492 *
donatien 0:8e01dca41002 493 * \param[in] addr Address of packet to check for DMA safe operation
donatien 0:8e01dca41002 494 * \return 1 if the packet address is not safe, otherwise 0
donatien 0:8e01dca41002 495 */
donatien 0:8e01dca41002 496 static s32_t lpc_packet_addr_notsafe(void *addr) {
donatien 0:8e01dca41002 497 /* Check for legal address ranges */
donatien 0:8e01dca41002 498 if ((((u32_t) addr >= 0x2007C000) && ((u32_t) addr < 0x20083FFF))) {
donatien 0:8e01dca41002 499 return 0;
donatien 0:8e01dca41002 500 }
donatien 0:8e01dca41002 501 return 1;
donatien 0:8e01dca41002 502 }
donatien 0:8e01dca41002 503
donatien 0:8e01dca41002 504 /** \brief Sets up the TX descriptor ring buffers.
donatien 0:8e01dca41002 505 *
donatien 0:8e01dca41002 506 * This function sets up the descriptor list used for transmit packets.
donatien 0:8e01dca41002 507 *
donatien 0:8e01dca41002 508 * \param[in] lpc_enetif Pointer to driver data structure
donatien 0:8e01dca41002 509 */
donatien 0:8e01dca41002 510 static err_t lpc_tx_setup(struct lpc_enetdata *lpc_enetif)
donatien 0:8e01dca41002 511 {
donatien 0:8e01dca41002 512 s32_t idx;
donatien 0:8e01dca41002 513
donatien 0:8e01dca41002 514 /* Build TX descriptors for local buffers */
donatien 0:8e01dca41002 515 for (idx = 0; idx < LPC_NUM_BUFF_TXDESCS; idx++) {
donatien 0:8e01dca41002 516 lpc_enetif->ptxd[idx].control = 0;
donatien 0:8e01dca41002 517 lpc_enetif->ptxs[idx].statusinfo = 0xFFFFFFFF;
donatien 0:8e01dca41002 518 }
donatien 0:8e01dca41002 519
donatien 0:8e01dca41002 520 /* Setup pointers to TX structures */
donatien 0:8e01dca41002 521 LPC_EMAC->TxDescriptor = (u32_t) &lpc_enetif->ptxd[0];
donatien 0:8e01dca41002 522 LPC_EMAC->TxStatus = (u32_t) &lpc_enetif->ptxs[0];
donatien 0:8e01dca41002 523 LPC_EMAC->TxDescriptorNumber = LPC_NUM_BUFF_TXDESCS - 1;
donatien 0:8e01dca41002 524
donatien 0:8e01dca41002 525 lpc_enetif->lpc_last_tx_idx = 0;
donatien 0:8e01dca41002 526
donatien 0:8e01dca41002 527 return ERR_OK;
donatien 0:8e01dca41002 528 }
donatien 0:8e01dca41002 529
donatien 0:8e01dca41002 530 /** \brief Free TX buffers that are complete
donatien 0:8e01dca41002 531 *
donatien 0:8e01dca41002 532 * \param[in] lpc_enetif Pointer to driver data structure
donatien 0:8e01dca41002 533 * \param[in] cidx EMAC current descriptor comsumer index
donatien 0:8e01dca41002 534 */
donatien 0:8e01dca41002 535 static void lpc_tx_reclaim_st(struct lpc_enetdata *lpc_enetif, u32_t cidx)
donatien 0:8e01dca41002 536 {
donatien 0:8e01dca41002 537 #if NO_SYS == 0
donatien 0:8e01dca41002 538 /* Get exclusive access */
donatien 0:8e01dca41002 539 sys_mutex_lock(&lpc_enetif->TXLockMutex);
donatien 0:8e01dca41002 540 #endif
donatien 0:8e01dca41002 541
donatien 0:8e01dca41002 542 while (cidx != lpc_enetif->lpc_last_tx_idx) {
donatien 0:8e01dca41002 543 if (lpc_enetif->txb[lpc_enetif->lpc_last_tx_idx] != NULL) {
donatien 0:8e01dca41002 544 LWIP_DEBUGF(UDP_LPC_EMAC | LWIP_DBG_TRACE,
donatien 0:8e01dca41002 545 ("lpc_tx_reclaim_st: Freeing packet %p (index %d)\n",
donatien 0:8e01dca41002 546 lpc_enetif->txb[lpc_enetif->lpc_last_tx_idx],
donatien 0:8e01dca41002 547 lpc_enetif->lpc_last_tx_idx));
donatien 0:8e01dca41002 548 pbuf_free(lpc_enetif->txb[lpc_enetif->lpc_last_tx_idx]);
donatien 0:8e01dca41002 549 lpc_enetif->txb[lpc_enetif->lpc_last_tx_idx] = NULL;
donatien 0:8e01dca41002 550 }
donatien 0:8e01dca41002 551
donatien 0:8e01dca41002 552 #if NO_SYS == 0
donatien 0:8e01dca41002 553 sys_sem_signal(&lpc_enetif->xTXDCountSem);
donatien 0:8e01dca41002 554 #endif
donatien 0:8e01dca41002 555 lpc_enetif->lpc_last_tx_idx++;
donatien 0:8e01dca41002 556 if (lpc_enetif->lpc_last_tx_idx >= LPC_NUM_BUFF_TXDESCS)
donatien 0:8e01dca41002 557 lpc_enetif->lpc_last_tx_idx = 0;
donatien 0:8e01dca41002 558 }
donatien 0:8e01dca41002 559
donatien 0:8e01dca41002 560 #if NO_SYS == 0
donatien 0:8e01dca41002 561 /* Restore access */
donatien 0:8e01dca41002 562 sys_mutex_unlock(&lpc_enetif->TXLockMutex);
donatien 0:8e01dca41002 563 #endif
donatien 0:8e01dca41002 564 }
donatien 0:8e01dca41002 565
donatien 0:8e01dca41002 566 /** \brief User call for freeingTX buffers that are complete
donatien 0:8e01dca41002 567 *
donatien 0:8e01dca41002 568 * \param[in] netif the lwip network interface structure for this lpc_enetif
donatien 0:8e01dca41002 569 */
donatien 0:8e01dca41002 570 void lpc_tx_reclaim(struct netif *netif)
donatien 0:8e01dca41002 571 {
donatien 0:8e01dca41002 572 lpc_tx_reclaim_st((struct lpc_enetdata *) netif->state,
donatien 0:8e01dca41002 573 LPC_EMAC->TxConsumeIndex);
donatien 0:8e01dca41002 574 }
donatien 0:8e01dca41002 575
donatien 0:8e01dca41002 576 /** \brief Polls if an available TX descriptor is ready. Can be used to
donatien 0:8e01dca41002 577 * determine if the low level transmit function will block.
donatien 0:8e01dca41002 578 *
donatien 0:8e01dca41002 579 * \param[in] netif the lwip network interface structure for this lpc_enetif
donatien 0:8e01dca41002 580 * \return 0 if no descriptors are read, or >0
donatien 0:8e01dca41002 581 */
donatien 0:8e01dca41002 582 s32_t lpc_tx_ready(struct netif *netif)
donatien 0:8e01dca41002 583 {
donatien 0:8e01dca41002 584 s32_t fb;
donatien 0:8e01dca41002 585 u32_t idx, cidx;
donatien 0:8e01dca41002 586
donatien 0:8e01dca41002 587 cidx = LPC_EMAC->TxConsumeIndex;
donatien 0:8e01dca41002 588 idx = LPC_EMAC->TxProduceIndex;
donatien 0:8e01dca41002 589
donatien 0:8e01dca41002 590 /* Determine number of free buffers */
donatien 0:8e01dca41002 591 if (idx == cidx)
donatien 0:8e01dca41002 592 fb = LPC_NUM_BUFF_TXDESCS;
donatien 0:8e01dca41002 593 else if (cidx > idx)
donatien 0:8e01dca41002 594 fb = (LPC_NUM_BUFF_TXDESCS - 1) -
donatien 0:8e01dca41002 595 ((idx + LPC_NUM_BUFF_TXDESCS) - cidx);
donatien 0:8e01dca41002 596 else
donatien 0:8e01dca41002 597 fb = (LPC_NUM_BUFF_TXDESCS - 1) - (cidx - idx);
donatien 0:8e01dca41002 598
donatien 0:8e01dca41002 599 return fb;
donatien 0:8e01dca41002 600 }
donatien 0:8e01dca41002 601
donatien 0:8e01dca41002 602 /** \brief Low level output of a packet. Never call this from an
donatien 0:8e01dca41002 603 * interrupt context, as it may block until TX descriptors
donatien 0:8e01dca41002 604 * become available.
donatien 0:8e01dca41002 605 *
donatien 0:8e01dca41002 606 * \param[in] netif the lwip network interface structure for this lpc_enetif
donatien 0:8e01dca41002 607 * \param[in] p the MAC packet to send (e.g. IP packet including MAC addresses and type)
donatien 0:8e01dca41002 608 * \return ERR_OK if the packet could be sent or an err_t value if the packet couldn't be sent
donatien 0:8e01dca41002 609 */
donatien 0:8e01dca41002 610 static err_t lpc_low_level_output(struct netif *netif, struct pbuf *p)
donatien 0:8e01dca41002 611 {
donatien 0:8e01dca41002 612 struct lpc_enetdata *lpc_enetif = netif->state;
donatien 0:8e01dca41002 613 struct pbuf *q;
donatien 0:8e01dca41002 614 u8_t *dst;
donatien 0:8e01dca41002 615 u32_t idx = 0, sz = 0;
donatien 0:8e01dca41002 616 err_t err = ERR_OK;
donatien 0:8e01dca41002 617 struct pbuf *np;
donatien 0:8e01dca41002 618 u32_t dn, notdmasafe = 0;
donatien 0:8e01dca41002 619
donatien 0:8e01dca41002 620 /* Zero-copy TX buffers may be fragmented across mutliple payload
donatien 0:8e01dca41002 621 chains. Determine the number of descriptors needed for the
donatien 0:8e01dca41002 622 transfer. The pbuf chaining can be a mess! */
donatien 0:8e01dca41002 623 dn = (u32_t) pbuf_clen(p);
donatien 0:8e01dca41002 624
donatien 0:8e01dca41002 625 /* Test to make sure packet addresses are DMA safe. A DMA safe
donatien 0:8e01dca41002 626 address is once that uses external memory or periphheral RAM.
donatien 0:8e01dca41002 627 IRAM and FLASH are not safe! */
donatien 0:8e01dca41002 628 for (q = p; q != NULL; q = q->next)
donatien 0:8e01dca41002 629 notdmasafe += lpc_packet_addr_notsafe(q->payload);
donatien 0:8e01dca41002 630
donatien 0:8e01dca41002 631 #if LPC_TX_PBUF_BOUNCE_EN==1
donatien 0:8e01dca41002 632 /* If the pbuf is not DMA safe, a new bounce buffer (pbuf) will be
donatien 0:8e01dca41002 633 created that will be used instead. This requires an copy from the
donatien 0:8e01dca41002 634 non-safe DMA region to the new pbuf */
donatien 0:8e01dca41002 635 if (notdmasafe) {
donatien 0:8e01dca41002 636 /* Allocate a pbuf in DMA memory */
donatien 0:8e01dca41002 637 np = pbuf_alloc(PBUF_RAW, p->tot_len, PBUF_RAM);
donatien 0:8e01dca41002 638 if (np == NULL)
donatien 0:8e01dca41002 639 return ERR_MEM;
donatien 0:8e01dca41002 640
donatien 0:8e01dca41002 641 /* This buffer better be contiguous! */
donatien 0:8e01dca41002 642 LWIP_ASSERT("lpc_low_level_output: New transmit pbuf is chained",
donatien 0:8e01dca41002 643 (pbuf_clen(np) == 1));
donatien 0:8e01dca41002 644
donatien 0:8e01dca41002 645 /* Copy to DMA safe pbuf */
donatien 0:8e01dca41002 646 dst = (u8_t *) np->payload;
donatien 0:8e01dca41002 647 for(q = p; q != NULL; q = q->next) {
donatien 0:8e01dca41002 648 /* Copy the buffer to the descriptor's buffer */
donatien 0:8e01dca41002 649 MEMCPY(dst, (u8_t *) q->payload, q->len);
donatien 0:8e01dca41002 650 dst += q->len;
donatien 0:8e01dca41002 651 }
donatien 0:8e01dca41002 652 np->len = p->tot_len;
donatien 0:8e01dca41002 653
donatien 0:8e01dca41002 654 LWIP_DEBUGF(UDP_LPC_EMAC | LWIP_DBG_TRACE,
donatien 0:8e01dca41002 655 ("lpc_low_level_output: Switched to DMA safe buffer, old=%p, new=%p\n",
donatien 0:8e01dca41002 656 q, np));
donatien 0:8e01dca41002 657
donatien 0:8e01dca41002 658 /* use the new buffer for descrptor queueing. The original pbuf will
donatien 0:8e01dca41002 659 be de-allocated outsuide this driver. */
donatien 0:8e01dca41002 660 p = np;
donatien 0:8e01dca41002 661 dn = 1;
donatien 0:8e01dca41002 662 }
donatien 0:8e01dca41002 663 #else
donatien 0:8e01dca41002 664 if (notdmasafe)
donatien 0:8e01dca41002 665 LWIP_ASSERT("lpc_low_level_output: Not a DMA safe pbuf",
donatien 0:8e01dca41002 666 (notdmasafe == 0));
donatien 0:8e01dca41002 667 #endif
donatien 0:8e01dca41002 668
donatien 0:8e01dca41002 669 /* Wait until enough descriptors are available for the transfer. */
donatien 0:8e01dca41002 670 /* THIS WILL BLOCK UNTIL THERE ARE ENOUGH DESCRIPTORS AVAILABLE */
donatien 0:8e01dca41002 671 while (dn > lpc_tx_ready(netif))
donatien 0:8e01dca41002 672 #if NO_SYS == 0
donatien 0:8e01dca41002 673 sys_arch_sem_wait(&lpc_enetif->xTXDCountSem, 0);
donatien 0:8e01dca41002 674 #else
donatien 0:8e01dca41002 675 osDelay(1);
donatien 0:8e01dca41002 676 #endif
donatien 0:8e01dca41002 677
donatien 0:8e01dca41002 678 /* Get free TX buffer index */
donatien 0:8e01dca41002 679 idx = LPC_EMAC->TxProduceIndex;
donatien 0:8e01dca41002 680
donatien 0:8e01dca41002 681 #if NO_SYS == 0
donatien 0:8e01dca41002 682 /* Get exclusive access */
donatien 0:8e01dca41002 683 sys_mutex_lock(&lpc_enetif->TXLockMutex);
donatien 0:8e01dca41002 684 #endif
donatien 0:8e01dca41002 685
donatien 0:8e01dca41002 686 /* Prevent LWIP from de-allocating this pbuf. The driver will
donatien 0:8e01dca41002 687 free it once it's been transmitted. */
donatien 0:8e01dca41002 688 if (!notdmasafe)
donatien 0:8e01dca41002 689 pbuf_ref(p);
donatien 0:8e01dca41002 690
donatien 0:8e01dca41002 691 /* Setup transfers */
donatien 0:8e01dca41002 692 q = p;
donatien 0:8e01dca41002 693 while (dn > 0) {
donatien 0:8e01dca41002 694 dn--;
donatien 0:8e01dca41002 695
donatien 0:8e01dca41002 696 /* Only save pointer to free on last descriptor */
donatien 0:8e01dca41002 697 if (dn == 0) {
donatien 0:8e01dca41002 698 /* Save size of packet and signal it's ready */
donatien 0:8e01dca41002 699 lpc_enetif->ptxd[idx].control = (q->len - 1) | EMAC_TCTRL_INT |
donatien 0:8e01dca41002 700 EMAC_TCTRL_LAST;
donatien 0:8e01dca41002 701 lpc_enetif->txb[idx] = q;
donatien 0:8e01dca41002 702 }
donatien 0:8e01dca41002 703 else {
donatien 0:8e01dca41002 704 /* Save size of packet, descriptor is not last */
donatien 0:8e01dca41002 705 lpc_enetif->ptxd[idx].control = (q->len - 1) | EMAC_TCTRL_INT;
donatien 0:8e01dca41002 706 lpc_enetif->txb[idx] = NULL;
donatien 0:8e01dca41002 707 }
donatien 0:8e01dca41002 708
donatien 0:8e01dca41002 709 LWIP_DEBUGF(UDP_LPC_EMAC | LWIP_DBG_TRACE,
donatien 0:8e01dca41002 710 ("lpc_low_level_output: pbuf %p packet(%p) sent, chain#=%d,"
donatien 0:8e01dca41002 711 " size = %d (index=%d)\n", q, q->payload, dn, q->len, idx));
donatien 0:8e01dca41002 712
donatien 0:8e01dca41002 713 lpc_enetif->ptxd[idx].packet = (u32_t) q->payload;
donatien 0:8e01dca41002 714
donatien 0:8e01dca41002 715 q = q->next;
donatien 0:8e01dca41002 716
donatien 0:8e01dca41002 717 idx++;
donatien 0:8e01dca41002 718 if (idx >= LPC_NUM_BUFF_TXDESCS)
donatien 0:8e01dca41002 719 idx = 0;
donatien 0:8e01dca41002 720 }
donatien 0:8e01dca41002 721
donatien 0:8e01dca41002 722 LPC_EMAC->TxProduceIndex = idx;
donatien 0:8e01dca41002 723
donatien 0:8e01dca41002 724 LINK_STATS_INC(link.xmit);
donatien 0:8e01dca41002 725
donatien 0:8e01dca41002 726 #if NO_SYS == 0
donatien 0:8e01dca41002 727 /* Restore access */
donatien 0:8e01dca41002 728 sys_mutex_unlock(&lpc_enetif->TXLockMutex);
donatien 0:8e01dca41002 729 #endif
donatien 0:8e01dca41002 730
donatien 0:8e01dca41002 731 return ERR_OK;
donatien 0:8e01dca41002 732 }
donatien 0:8e01dca41002 733
donatien 0:8e01dca41002 734 /** \brief LPC EMAC interrupt handler.
donatien 0:8e01dca41002 735 *
donatien 0:8e01dca41002 736 * This function handles the transmit, receive, and error interrupt of
donatien 0:8e01dca41002 737 * the LPC177x_8x. This is meant to be used when NO_SYS=0.
donatien 0:8e01dca41002 738 */
donatien 0:8e01dca41002 739 void ENET_IRQHandler(void)
donatien 0:8e01dca41002 740 {
donatien 0:8e01dca41002 741 #if NO_SYS == 1
donatien 0:8e01dca41002 742 /* Interrupts are not used without an RTOS */
donatien 0:8e01dca41002 743 NVIC_DisableIRQ(ENET_IRQn);
donatien 0:8e01dca41002 744 #else
donatien 0:8e01dca41002 745 int xRecTaskWoken = 0, XTXTaskWoken = 0;
donatien 0:8e01dca41002 746 uint32_t ints;
donatien 0:8e01dca41002 747
donatien 0:8e01dca41002 748 /* Interrupts are of 2 groups - transmit or receive. Based on the
donatien 0:8e01dca41002 749 interrupt, kick off the receive or transmit (cleanup) task */
donatien 0:8e01dca41002 750
donatien 0:8e01dca41002 751 /* Get pending interrupts */
donatien 0:8e01dca41002 752 ints = LPC_EMAC->IntStatus;
donatien 0:8e01dca41002 753
donatien 0:8e01dca41002 754 if (ints & RXINTGROUP) {
donatien 0:8e01dca41002 755 /* RX group interrupt(s) */
donatien 0:8e01dca41002 756 /* Give semaphore to wakeup RX receive task. Note the FreeRTOS
donatien 0:8e01dca41002 757 method is used instead of the LWIP arch method. */
donatien 0:8e01dca41002 758 //xSemaphoreGiveFromISR(lpc_enetdata.RxSem, &xRecTaskWoken);
donatien 0:8e01dca41002 759 sys_sem_signal(&lpc_enetdata.RxSem);
donatien 0:8e01dca41002 760 }
donatien 0:8e01dca41002 761
donatien 0:8e01dca41002 762 if (ints & TXINTGROUP) {
donatien 0:8e01dca41002 763 /* TX group interrupt(s) */
donatien 0:8e01dca41002 764 /* Give semaphore to wakeup TX cleanup task. Note the FreeRTOS
donatien 0:8e01dca41002 765 method is used instead of the LWIP arch method. */
donatien 0:8e01dca41002 766 // xSemaphoreGiveFromISR(lpc_enetdata.TxCleanSem, &XTXTaskWoken);
donatien 0:8e01dca41002 767 sys_sem_signal(&lpc_enetdata.TxCleanSem);
donatien 0:8e01dca41002 768 }
donatien 0:8e01dca41002 769
donatien 0:8e01dca41002 770 /* Clear pending interrupts */
donatien 0:8e01dca41002 771 LPC_EMAC->IntClear = ints;
donatien 0:8e01dca41002 772
donatien 0:8e01dca41002 773 /* Context switch needed? */
donatien 0:8e01dca41002 774 // portEND_SWITCHING_ISR( xRecTaskWoken || XTXTaskWoken );
donatien 0:8e01dca41002 775 #endif
donatien 0:8e01dca41002 776 }
donatien 0:8e01dca41002 777
donatien 0:8e01dca41002 778 #if NO_SYS == 0
donatien 0:8e01dca41002 779 /** \brief Packet reception task
donatien 0:8e01dca41002 780 *
donatien 0:8e01dca41002 781 * This task is called when a packet is received. It will
donatien 0:8e01dca41002 782 * pass the packet to the LWIP core.
donatien 0:8e01dca41002 783 *
donatien 0:8e01dca41002 784 * \param[in] pvParameters Not used yet
donatien 0:8e01dca41002 785 */
donatien 0:8e01dca41002 786 static void packet_receive( void const* pvParameters )
donatien 0:8e01dca41002 787 {
donatien 0:8e01dca41002 788 struct lpc_enetdata *lpc_enetif = pvParameters;
donatien 0:8e01dca41002 789
donatien 0:8e01dca41002 790 while (1) {
donatien 0:8e01dca41002 791 /* Wait for receive task to wakeup */
donatien 0:8e01dca41002 792 sys_arch_sem_wait(&lpc_enetif->RxSem, 0);
donatien 0:8e01dca41002 793
donatien 0:8e01dca41002 794 /* Process packets until all empty */
donatien 0:8e01dca41002 795 while (LPC_EMAC->RxConsumeIndex != LPC_EMAC->RxProduceIndex)
donatien 0:8e01dca41002 796 lpc_enetif_input(lpc_enetif->netif);
donatien 0:8e01dca41002 797 }
donatien 0:8e01dca41002 798 }
donatien 0:8e01dca41002 799
donatien 0:8e01dca41002 800 /** \brief Transmit cleanup task
donatien 0:8e01dca41002 801 *
donatien 0:8e01dca41002 802 * This task is called when a transmit interrupt occurs and
donatien 0:8e01dca41002 803 * reclaims the pbuf and descriptor used for the packet once
donatien 0:8e01dca41002 804 * the packet has been transferred.
donatien 0:8e01dca41002 805 *
donatien 0:8e01dca41002 806 * \param[in] pvParameters Not used yet
donatien 0:8e01dca41002 807 */
donatien 0:8e01dca41002 808 static void transmit_cleanup( void const* pvParameters )
donatien 0:8e01dca41002 809 {
donatien 0:8e01dca41002 810 struct lpc_enetdata *lpc_enetif = pvParameters;
donatien 0:8e01dca41002 811 s32_t idx;
donatien 0:8e01dca41002 812
donatien 0:8e01dca41002 813 while (1) {
donatien 0:8e01dca41002 814 /* Wait for transmit cleanup task to wakeup */
donatien 0:8e01dca41002 815 sys_arch_sem_wait(&lpc_enetif->TxCleanSem, 0);
donatien 0:8e01dca41002 816
donatien 0:8e01dca41002 817 /* Error handling for TX underruns. This should never happen unless
donatien 0:8e01dca41002 818 something is holding the bus or the clocks are going too slow. It
donatien 0:8e01dca41002 819 can probably be safely removed. */
donatien 0:8e01dca41002 820 if (LPC_EMAC->IntStatus & EMAC_INT_TX_UNDERRUN) {
donatien 0:8e01dca41002 821 LINK_STATS_INC(link.err);
donatien 0:8e01dca41002 822 LINK_STATS_INC(link.drop);
donatien 0:8e01dca41002 823
donatien 0:8e01dca41002 824 #if NO_SYS == 0
donatien 0:8e01dca41002 825 /* Get exclusive access */
donatien 0:8e01dca41002 826 sys_mutex_lock(&lpc_enetif->TXLockMutex);
donatien 0:8e01dca41002 827 #endif
donatien 0:8e01dca41002 828 /* Reset the TX side */
donatien 0:8e01dca41002 829 LPC_EMAC->MAC1 |= EMAC_MAC1_RES_TX;
donatien 0:8e01dca41002 830 LPC_EMAC->IntClear = EMAC_INT_TX_UNDERRUN;
donatien 0:8e01dca41002 831
donatien 0:8e01dca41002 832 /* De-allocate all queued TX pbufs */
donatien 0:8e01dca41002 833 for (idx = 0; idx < LPC_NUM_BUFF_RXDESCS; idx++) {
donatien 0:8e01dca41002 834 if (lpc_enetif->txb[idx] != NULL) {
donatien 0:8e01dca41002 835 pbuf_free(lpc_enetif->txb[idx]);
donatien 0:8e01dca41002 836 lpc_enetif->txb[idx] = NULL;
donatien 0:8e01dca41002 837 }
donatien 0:8e01dca41002 838 }
donatien 0:8e01dca41002 839
donatien 0:8e01dca41002 840 #if NO_SYS == 0
donatien 0:8e01dca41002 841 /* Restore access */
donatien 0:8e01dca41002 842 sys_mutex_unlock(&lpc_enetif->TXLockMutex);
donatien 0:8e01dca41002 843 #endif
donatien 0:8e01dca41002 844 /* Start TX side again */
donatien 0:8e01dca41002 845 lpc_tx_setup(lpc_enetif);
donatien 0:8e01dca41002 846 } else {
donatien 0:8e01dca41002 847 /* Free TX buffers that are done sending */
donatien 0:8e01dca41002 848 lpc_tx_reclaim(lpc_enetdata.netif);
donatien 0:8e01dca41002 849 }
donatien 0:8e01dca41002 850 }
donatien 0:8e01dca41002 851 }
donatien 0:8e01dca41002 852 #endif
donatien 0:8e01dca41002 853
donatien 0:8e01dca41002 854 /** \brief Low level init of the MAC and PHY.
donatien 0:8e01dca41002 855 *
donatien 0:8e01dca41002 856 * \param[in] netif Pointer to LWIP netif structure
donatien 0:8e01dca41002 857 */
donatien 0:8e01dca41002 858 static err_t low_level_init(struct netif *netif)
donatien 0:8e01dca41002 859 {
donatien 0:8e01dca41002 860 struct lpc_enetdata *lpc_enetif = netif->state;
donatien 0:8e01dca41002 861 err_t err = ERR_OK;
donatien 0:8e01dca41002 862
donatien 0:8e01dca41002 863 /* Enable MII clocking */
donatien 0:8e01dca41002 864 LPC_SC->PCONP |= CLKPWR_PCONP_PCENET;
donatien 0:8e01dca41002 865
donatien 0:8e01dca41002 866 LPC_PINCON->PINSEL2 = 0x50150105; /* Enable P1 Ethernet Pins. */
donatien 0:8e01dca41002 867 LPC_PINCON->PINSEL3 = (LPC_PINCON->PINSEL3 & ~0x0000000F) | 0x00000005;
donatien 0:8e01dca41002 868
donatien 0:8e01dca41002 869 /* Reset all MAC logic */
donatien 0:8e01dca41002 870 LPC_EMAC->MAC1 = EMAC_MAC1_RES_TX | EMAC_MAC1_RES_MCS_TX |
donatien 0:8e01dca41002 871 EMAC_MAC1_RES_RX | EMAC_MAC1_RES_MCS_RX | EMAC_MAC1_SIM_RES |
donatien 0:8e01dca41002 872 EMAC_MAC1_SOFT_RES;
donatien 0:8e01dca41002 873 LPC_EMAC->Command = EMAC_CR_REG_RES | EMAC_CR_TX_RES | EMAC_CR_RX_RES |
donatien 0:8e01dca41002 874 EMAC_CR_PASS_RUNT_FRM;
donatien 0:8e01dca41002 875 osDelay(10);
donatien 0:8e01dca41002 876
donatien 0:8e01dca41002 877 /* Initial MAC initialization */
donatien 0:8e01dca41002 878 LPC_EMAC->MAC1 = EMAC_MAC1_PASS_ALL;
donatien 0:8e01dca41002 879 LPC_EMAC->MAC2 = EMAC_MAC2_CRC_EN | EMAC_MAC2_PAD_EN |
donatien 0:8e01dca41002 880 EMAC_MAC2_VLAN_PAD_EN;
donatien 0:8e01dca41002 881 LPC_EMAC->MAXF = EMAC_ETH_MAX_FLEN;
donatien 0:8e01dca41002 882
donatien 0:8e01dca41002 883 /* Set RMII management clock rate to lowest speed */
donatien 0:8e01dca41002 884 LPC_EMAC->MCFG = EMAC_MCFG_CLK_SEL(11) | EMAC_MCFG_RES_MII;
donatien 0:8e01dca41002 885 LPC_EMAC->MCFG &= ~EMAC_MCFG_RES_MII;
donatien 0:8e01dca41002 886
donatien 0:8e01dca41002 887 /* Maximum number of retries, 0x37 collision window, gap */
donatien 0:8e01dca41002 888 LPC_EMAC->CLRT = EMAC_CLRT_DEF;
donatien 0:8e01dca41002 889 LPC_EMAC->IPGR = EMAC_IPGR_P1_DEF | EMAC_IPGR_P2_DEF;
donatien 0:8e01dca41002 890
donatien 0:8e01dca41002 891 #if LPC_EMAC_RMII
donatien 0:8e01dca41002 892 /* RMII setup */
donatien 0:8e01dca41002 893 LPC_EMAC->Command = EMAC_CR_PASS_RUNT_FRM | EMAC_CR_RMII;
donatien 0:8e01dca41002 894 #else
donatien 0:8e01dca41002 895 /* MII setup */
donatien 0:8e01dca41002 896 LPC_EMAC->CR = EMAC_CR_PASS_RUNT_FRM;
donatien 0:8e01dca41002 897 #endif
donatien 0:8e01dca41002 898
donatien 0:8e01dca41002 899 /* Initialize the PHY and reset */
donatien 0:8e01dca41002 900 err = lpc_phy_init(netif);
donatien 0:8e01dca41002 901 if (err != ERR_OK)
donatien 0:8e01dca41002 902 return err;
donatien 0:8e01dca41002 903
donatien 0:8e01dca41002 904 /* Save station address */
donatien 0:8e01dca41002 905 LPC_EMAC->SA2 = (u32_t) netif->hwaddr[0] |
donatien 0:8e01dca41002 906 (((u32_t) netif->hwaddr[1]) << 8);
donatien 0:8e01dca41002 907 LPC_EMAC->SA1 = (u32_t) netif->hwaddr[2] |
donatien 0:8e01dca41002 908 (((u32_t) netif->hwaddr[3]) << 8);
donatien 0:8e01dca41002 909 LPC_EMAC->SA0 = (u32_t) netif->hwaddr[4] |
donatien 0:8e01dca41002 910 (((u32_t) netif->hwaddr[5]) << 8);
donatien 0:8e01dca41002 911
donatien 0:8e01dca41002 912 /* Setup transmit and receive descriptors */
donatien 0:8e01dca41002 913 if (lpc_tx_setup(lpc_enetif) != ERR_OK)
donatien 0:8e01dca41002 914 return ERR_BUF;
donatien 0:8e01dca41002 915 if (lpc_rx_setup(lpc_enetif) != ERR_OK)
donatien 0:8e01dca41002 916 return ERR_BUF;
donatien 0:8e01dca41002 917
donatien 0:8e01dca41002 918 /* Enable packet reception */
donatien 0:8e01dca41002 919 #if IP_SOF_BROADCAST_RECV
donatien 0:8e01dca41002 920 LPC_EMAC->RxFilterCtrl = EMAC_RFC_PERFECT_EN | EMAC_RFC_BCAST_EN;
donatien 0:8e01dca41002 921 #else
donatien 0:8e01dca41002 922 LPC_EMAC->RxFilterCtrl = EMAC_RFC_PERFECT_EN;
donatien 0:8e01dca41002 923 #endif
donatien 0:8e01dca41002 924
donatien 0:8e01dca41002 925 /* Clear and enable rx/tx interrupts */
donatien 0:8e01dca41002 926 LPC_EMAC->IntClear = 0xFFFF;
donatien 0:8e01dca41002 927 LPC_EMAC->IntEnable = RXINTGROUP | TXINTGROUP;
donatien 0:8e01dca41002 928
donatien 0:8e01dca41002 929 /* Enable RX and TX */
donatien 0:8e01dca41002 930 LPC_EMAC->Command |= EMAC_CR_RX_EN | EMAC_CR_TX_EN;
donatien 0:8e01dca41002 931 LPC_EMAC->MAC1 |= EMAC_MAC1_REC_EN;
donatien 0:8e01dca41002 932
donatien 0:8e01dca41002 933 return err;
donatien 0:8e01dca41002 934 }
donatien 0:8e01dca41002 935
donatien 0:8e01dca41002 936 /* This function provides a method for the PHY to setup the EMAC
donatien 0:8e01dca41002 937 for the PHY negotiated duplex mode */
donatien 0:8e01dca41002 938 void lpc_emac_set_duplex(int full_duplex)
donatien 0:8e01dca41002 939 {
donatien 0:8e01dca41002 940 if (full_duplex) {
donatien 0:8e01dca41002 941 LPC_EMAC->MAC2 |= EMAC_MAC2_FULL_DUP;
donatien 0:8e01dca41002 942 LPC_EMAC->Command |= EMAC_CR_FULL_DUP;
donatien 0:8e01dca41002 943 LPC_EMAC->IPGT = EMAC_IPGT_FULL_DUP;
donatien 0:8e01dca41002 944 } else {
donatien 0:8e01dca41002 945 LPC_EMAC->MAC2 &= ~EMAC_MAC2_FULL_DUP;
donatien 0:8e01dca41002 946 LPC_EMAC->Command &= ~EMAC_CR_FULL_DUP;
donatien 0:8e01dca41002 947 LPC_EMAC->IPGT = EMAC_IPGT_HALF_DUP;
donatien 0:8e01dca41002 948 }
donatien 0:8e01dca41002 949 }
donatien 0:8e01dca41002 950
donatien 0:8e01dca41002 951 /* This function provides a method for the PHY to setup the EMAC
donatien 0:8e01dca41002 952 for the PHY negotiated bit rate */
donatien 0:8e01dca41002 953 void lpc_emac_set_speed(int mbs_100)
donatien 0:8e01dca41002 954 {
donatien 0:8e01dca41002 955 if (mbs_100)
donatien 0:8e01dca41002 956 LPC_EMAC->SUPP = EMAC_SUPP_SPEED;
donatien 0:8e01dca41002 957 else
donatien 0:8e01dca41002 958 LPC_EMAC->SUPP = 0;
donatien 0:8e01dca41002 959 }
donatien 0:8e01dca41002 960
donatien 0:8e01dca41002 961 /**
donatien 0:8e01dca41002 962 * This function is the ethernet packet send function. It calls
donatien 0:8e01dca41002 963 * etharp_output after checking link status.
donatien 0:8e01dca41002 964 *
donatien 0:8e01dca41002 965 * \param[in] netif the lwip network interface structure for this lpc_enetif
donatien 0:8e01dca41002 966 * \param[in] q Pointer to pbug to send
donatien 0:8e01dca41002 967 * \param[in] ipaddr IP address
donatien 0:8e01dca41002 968 * \return ERR_OK or error code
donatien 0:8e01dca41002 969 */
donatien 0:8e01dca41002 970 err_t lpc_etharp_output(struct netif *netif, struct pbuf *q,
donatien 0:8e01dca41002 971 ip_addr_t *ipaddr)
donatien 0:8e01dca41002 972 {
donatien 0:8e01dca41002 973 /* Only send packet is link is up */
donatien 0:8e01dca41002 974 if (netif->flags & NETIF_FLAG_LINK_UP)
donatien 0:8e01dca41002 975 return etharp_output(netif, q, ipaddr);
donatien 0:8e01dca41002 976
donatien 0:8e01dca41002 977 return ERR_CONN;
donatien 0:8e01dca41002 978 }
donatien 0:8e01dca41002 979
donatien 0:8e01dca41002 980 /**
donatien 0:8e01dca41002 981 * Should be called at the beginning of the program to set up the
donatien 0:8e01dca41002 982 * network interface.
donatien 0:8e01dca41002 983 *
donatien 0:8e01dca41002 984 * This function should be passed as a parameter to netif_add().
donatien 0:8e01dca41002 985 *
donatien 0:8e01dca41002 986 * @param[in] netif the lwip network interface structure for this lpc_enetif
donatien 0:8e01dca41002 987 * @return ERR_OK if the loopif is initialized
donatien 0:8e01dca41002 988 * ERR_MEM if private data couldn't be allocated
donatien 0:8e01dca41002 989 * any other err_t on error
donatien 0:8e01dca41002 990 */
donatien 0:8e01dca41002 991 err_t lpc_enetif_init(struct netif *netif)
donatien 0:8e01dca41002 992 {
donatien 0:8e01dca41002 993 err_t err;
donatien 0:8e01dca41002 994
donatien 0:8e01dca41002 995 LWIP_ASSERT("netif != NULL", (netif != NULL));
donatien 0:8e01dca41002 996
donatien 0:8e01dca41002 997 lpc_enetdata.netif = netif;
donatien 0:8e01dca41002 998
donatien 0:8e01dca41002 999 /* set MAC hardware address */
donatien 0:8e01dca41002 1000 mbed_mac_address((char *)netif->hwaddr);
donatien 0:8e01dca41002 1001 netif->hwaddr_len = ETHARP_HWADDR_LEN;
donatien 0:8e01dca41002 1002
donatien 0:8e01dca41002 1003 /* maximum transfer unit */
donatien 0:8e01dca41002 1004 netif->mtu = 1500;
donatien 0:8e01dca41002 1005
donatien 0:8e01dca41002 1006 /* device capabilities */
donatien 0:8e01dca41002 1007 netif->flags = NETIF_FLAG_BROADCAST | NETIF_FLAG_ETHARP | NETIF_FLAG_UP |
donatien 0:8e01dca41002 1008 NETIF_FLAG_ETHERNET;
donatien 0:8e01dca41002 1009
donatien 0:8e01dca41002 1010 /* Initialize the hardware */
donatien 0:8e01dca41002 1011 netif->state = &lpc_enetdata;
donatien 0:8e01dca41002 1012 err = low_level_init(netif);
donatien 0:8e01dca41002 1013 if (err != ERR_OK)
donatien 0:8e01dca41002 1014 return err;
donatien 0:8e01dca41002 1015
donatien 0:8e01dca41002 1016 #if LWIP_NETIF_HOSTNAME
donatien 0:8e01dca41002 1017 /* Initialize interface hostname */
donatien 0:8e01dca41002 1018 netif->hostname = "lwiplpc";
donatien 0:8e01dca41002 1019 #endif /* LWIP_NETIF_HOSTNAME */
donatien 0:8e01dca41002 1020
donatien 0:8e01dca41002 1021 netif->name[0] = 'e';
donatien 0:8e01dca41002 1022 netif->name[1] = 'n';
donatien 0:8e01dca41002 1023
donatien 0:8e01dca41002 1024 netif->output = lpc_etharp_output;
donatien 0:8e01dca41002 1025 netif->linkoutput = lpc_low_level_output;
donatien 0:8e01dca41002 1026
donatien 0:8e01dca41002 1027 /* For FreeRTOS, start tasks */
donatien 0:8e01dca41002 1028 #if NO_SYS == 0
donatien 0:8e01dca41002 1029 err = sys_sem_new_mul(&lpc_enetdata.xTXDCountSem, LPC_NUM_BUFF_TXDESCS, LPC_NUM_BUFF_TXDESCS);
donatien 0:8e01dca41002 1030 LWIP_ASSERT("xTXDCountSem creation error", (err == ERR_OK));
donatien 0:8e01dca41002 1031
donatien 0:8e01dca41002 1032 err = sys_mutex_new(&lpc_enetdata.TXLockMutex);
donatien 0:8e01dca41002 1033 LWIP_ASSERT("TXLockMutex creation error", (err == ERR_OK));
donatien 0:8e01dca41002 1034
donatien 0:8e01dca41002 1035 /* Packet receive task */
donatien 0:8e01dca41002 1036 err = sys_sem_new(&lpc_enetdata.RxSem, 0);
donatien 0:8e01dca41002 1037 LWIP_ASSERT("RxSem creation error", (err == ERR_OK));
donatien 0:8e01dca41002 1038 sys_thread_new("receive_thread", packet_receive, netif->state, tskRECPKT_STACKSIZE, tskRECPKT_PRIORITY);
donatien 0:8e01dca41002 1039
donatien 0:8e01dca41002 1040 /* Transmit cleanup task */
donatien 0:8e01dca41002 1041 err = sys_sem_new(&lpc_enetdata.TxCleanSem, 0);
donatien 0:8e01dca41002 1042 LWIP_ASSERT("TxCleanSem creation error", (err == ERR_OK));
donatien 0:8e01dca41002 1043 sys_thread_new("txclean_thread", transmit_cleanup, netif->state, tskTXCLEAN_STACKSIZE, tskTXCLEAN_PRIORITY);
donatien 0:8e01dca41002 1044 #endif
donatien 0:8e01dca41002 1045
donatien 0:8e01dca41002 1046 return ERR_OK;
donatien 0:8e01dca41002 1047 }
donatien 0:8e01dca41002 1048
donatien 0:8e01dca41002 1049 /**
donatien 0:8e01dca41002 1050 * @}
donatien 0:8e01dca41002 1051 */
donatien 0:8e01dca41002 1052
donatien 0:8e01dca41002 1053 /* --------------------------------- End Of File ------------------------------ */