Ivan Shindev
V1
Fork of
lwip-eth
by 
mbed official
arch/lpc17_emac.c@7:99e5141a51dc, 2013-06-13 (annotated)
- Committer:
- lemniskata
- Date:
- Thu Jun 13 20:00:22 2013 +0000
- Revision:
- 7:99e5141a51dc
- Parent:
- 6:59b01b9349d5
V1
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| emilmont | 4:d827a085afd9 | 1 | /********************************************************************** |
| lemniskata | 7:99e5141a51dc | 2 | * $Id$ lpc17_emac.c 2011-11-20 |
| emilmont | 4:d827a085afd9 | 3 | *//** |
| lemniskata | 7:99e5141a51dc | 4 | * @file lpc17_emac.c |
| lemniskata | 7:99e5141a51dc | 5 | * @brief LPC17 ethernet driver for LWIP |
| lemniskata | 7:99e5141a51dc | 6 | * @version 1.0 |
| lemniskata | 7:99e5141a51dc | 7 | * @date 20. Nov. 2011 |
| lemniskata | 7:99e5141a51dc | 8 | * @author NXP MCU SW Application Team |
| emilmont | 4:d827a085afd9 | 9 | * |
| emilmont | 4:d827a085afd9 | 10 | * Copyright(C) 2011, NXP Semiconductor |
| emilmont | 4:d827a085afd9 | 11 | * All rights reserved. |
| emilmont | 4:d827a085afd9 | 12 | * |
| emilmont | 4:d827a085afd9 | 13 | *********************************************************************** |
| emilmont | 4:d827a085afd9 | 14 | * Software that is described herein is for illustrative purposes only |
| emilmont | 4:d827a085afd9 | 15 | * which provides customers with programming information regarding the |
| emilmont | 4:d827a085afd9 | 16 | * products. This software is supplied "AS IS" without any warranties. |
| emilmont | 4:d827a085afd9 | 17 | * NXP Semiconductors assumes no responsibility or liability for the |
| emilmont | 4:d827a085afd9 | 18 | * use of the software, conveys no license or title under any patent, |
| emilmont | 4:d827a085afd9 | 19 | * copyright, or mask work right to the product. NXP Semiconductors |
| emilmont | 4:d827a085afd9 | 20 | * reserves the right to make changes in the software without |
| emilmont | 4:d827a085afd9 | 21 | * notification. NXP Semiconductors also make no representation or |
| emilmont | 4:d827a085afd9 | 22 | * warranty that such application will be suitable for the specified |
| emilmont | 4:d827a085afd9 | 23 | * use without further testing or modification. |
| emilmont | 4:d827a085afd9 | 24 | **********************************************************************/ |
| emilmont | 4:d827a085afd9 | 25 | |
| emilmont | 4:d827a085afd9 | 26 | #include "lwip/opt.h" |
| emilmont | 4:d827a085afd9 | 27 | #include "lwip/sys.h" |
| emilmont | 4:d827a085afd9 | 28 | #include "lwip/def.h" |
| emilmont | 4:d827a085afd9 | 29 | #include "lwip/mem.h" |
| emilmont | 4:d827a085afd9 | 30 | #include "lwip/pbuf.h" |
| emilmont | 4:d827a085afd9 | 31 | #include "lwip/stats.h" |
| emilmont | 4:d827a085afd9 | 32 | #include "lwip/snmp.h" |
| emilmont | 4:d827a085afd9 | 33 | #include "netif/etharp.h" |
| emilmont | 4:d827a085afd9 | 34 | #include "netif/ppp_oe.h" |
| emilmont | 4:d827a085afd9 | 35 | |
| emilmont | 4:d827a085afd9 | 36 | #include "lpc17xx_emac.h" |
| emilmont | 4:d827a085afd9 | 37 | #include "lpc17_emac.h" |
| emilmont | 4:d827a085afd9 | 38 | #include "lpc_emac_config.h" |
| emilmont | 4:d827a085afd9 | 39 | #include "lpc_phy.h" |
| emilmont | 4:d827a085afd9 | 40 | #include "sys_arch.h" |
| emilmont | 4:d827a085afd9 | 41 | |
| emilmont | 4:d827a085afd9 | 42 | #include "mbed_interface.h" |
| emilmont | 4:d827a085afd9 | 43 | #include <string.h> |
| emilmont | 4:d827a085afd9 | 44 | |
| emilmont | 4:d827a085afd9 | 45 | #ifndef LPC_EMAC_RMII |
| emilmont | 4:d827a085afd9 | 46 | #error LPC_EMAC_RMII is not defined! |
| emilmont | 4:d827a085afd9 | 47 | #endif |
| emilmont | 4:d827a085afd9 | 48 | |
| emilmont | 4:d827a085afd9 | 49 | #if LPC_NUM_BUFF_TXDESCS < 2 |
| emilmont | 4:d827a085afd9 | 50 | #error LPC_NUM_BUFF_TXDESCS must be at least 2 |
| emilmont | 4:d827a085afd9 | 51 | #endif |
| emilmont | 4:d827a085afd9 | 52 | |
| emilmont | 4:d827a085afd9 | 53 | #if LPC_NUM_BUFF_RXDESCS < 3 |
| emilmont | 4:d827a085afd9 | 54 | #error LPC_NUM_BUFF_RXDESCS must be at least 3 |
| emilmont | 4:d827a085afd9 | 55 | #endif |
| emilmont | 4:d827a085afd9 | 56 | |
| lemniskata | 7:99e5141a51dc | 57 | /** @defgroup lwip17xx_emac_DRIVER lpc17 EMAC driver for LWIP |
| emilmont | 4:d827a085afd9 | 58 | * @ingroup lwip_emac |
| emilmont | 4:d827a085afd9 | 59 | * |
| emilmont | 4:d827a085afd9 | 60 | * @{ |
| emilmont | 4:d827a085afd9 | 61 | */ |
| emilmont | 4:d827a085afd9 | 62 | |
| emilmont | 4:d827a085afd9 | 63 | #if NO_SYS == 0 |
| emilmont | 4:d827a085afd9 | 64 | /** \brief Driver transmit and receive thread priorities |
| emilmont | 4:d827a085afd9 | 65 | * |
| emilmont | 4:d827a085afd9 | 66 | * Thread priorities for receive thread and TX cleanup thread. Alter |
| emilmont | 4:d827a085afd9 | 67 | * to prioritize receive or transmit bandwidth. In a heavily loaded |
| emilmont | 4:d827a085afd9 | 68 | * system or with LEIP_DEBUG enabled, the priorities might be better |
| emilmont | 4:d827a085afd9 | 69 | * the same. */ |
| emilmont | 4:d827a085afd9 | 70 | #define RX_PRIORITY (osPriorityNormal) |
| emilmont | 4:d827a085afd9 | 71 | #define TX_PRIORITY (osPriorityNormal) |
| emilmont | 4:d827a085afd9 | 72 | |
| emilmont | 4:d827a085afd9 | 73 | /** \brief Debug output formatter lock define |
| emilmont | 4:d827a085afd9 | 74 | * |
| emilmont | 4:d827a085afd9 | 75 | * When using FreeRTOS and with LWIP_DEBUG enabled, enabling this |
| emilmont | 4:d827a085afd9 | 76 | * define will allow RX debug messages to not interleave with the |
| emilmont | 4:d827a085afd9 | 77 | * TX messages (so they are actually readable). Not enabling this |
| emilmont | 4:d827a085afd9 | 78 | * define when the system is under load will cause the output to |
| emilmont | 4:d827a085afd9 | 79 | * be unreadable. There is a small tradeoff in performance for this |
| emilmont | 4:d827a085afd9 | 80 | * so use it only for debug. */ |
| emilmont | 4:d827a085afd9 | 81 | //#define LOCK_RX_THREAD |
| emilmont | 4:d827a085afd9 | 82 | |
| emilmont | 4:d827a085afd9 | 83 | /** \brief Receive group interrupts |
| emilmont | 4:d827a085afd9 | 84 | */ |
| emilmont | 4:d827a085afd9 | 85 | #define RXINTGROUP (EMAC_INT_RX_OVERRUN | EMAC_INT_RX_ERR | EMAC_INT_RX_DONE) |
| emilmont | 4:d827a085afd9 | 86 | |
| emilmont | 4:d827a085afd9 | 87 | /** \brief Transmit group interrupts |
| emilmont | 4:d827a085afd9 | 88 | */ |
| emilmont | 4:d827a085afd9 | 89 | #define TXINTGROUP (EMAC_INT_TX_UNDERRUN | EMAC_INT_TX_ERR | EMAC_INT_TX_DONE) |
| emilmont | 4:d827a085afd9 | 90 | |
| emilmont | 4:d827a085afd9 | 91 | #else |
| emilmont | 4:d827a085afd9 | 92 | #define RXINTGROUP 0 |
| emilmont | 4:d827a085afd9 | 93 | #define TXINTGROUP 0 |
| emilmont | 4:d827a085afd9 | 94 | #endif |
| emilmont | 4:d827a085afd9 | 95 | |
| emilmont | 4:d827a085afd9 | 96 | /** \brief Structure of a TX/RX descriptor |
| emilmont | 4:d827a085afd9 | 97 | */ |
| emilmont | 4:d827a085afd9 | 98 | typedef struct |
| emilmont | 4:d827a085afd9 | 99 | { |
| lemniskata | 7:99e5141a51dc | 100 | volatile u32_t packet; /**< Pointer to buffer */ |
| lemniskata | 7:99e5141a51dc | 101 | volatile u32_t control; /**< Control word */ |
| emilmont | 4:d827a085afd9 | 102 | } LPC_TXRX_DESC_T; |
| emilmont | 4:d827a085afd9 | 103 | |
| emilmont | 4:d827a085afd9 | 104 | /** \brief Structure of a RX status entry |
| emilmont | 4:d827a085afd9 | 105 | */ |
| emilmont | 4:d827a085afd9 | 106 | typedef struct |
| emilmont | 4:d827a085afd9 | 107 | { |
| lemniskata | 7:99e5141a51dc | 108 | volatile u32_t statusinfo; /**< RX status word */ |
| lemniskata | 7:99e5141a51dc | 109 | volatile u32_t statushashcrc; /**< RX hash CRC */ |
| emilmont | 4:d827a085afd9 | 110 | } LPC_TXRX_STATUS_T; |
| emilmont | 4:d827a085afd9 | 111 | |
| emilmont | 4:d827a085afd9 | 112 | /* LPC EMAC driver data structure */ |
| emilmont | 4:d827a085afd9 | 113 | struct lpc_enetdata { |
| emilmont | 4:d827a085afd9 | 114 | /* prxs must be 8 byte aligned! */ |
| lemniskata | 7:99e5141a51dc | 115 | LPC_TXRX_STATUS_T prxs[LPC_NUM_BUFF_RXDESCS]; /**< Pointer to RX statuses */ |
| lemniskata | 7:99e5141a51dc | 116 | struct netif *netif; /**< Reference back to LWIP parent netif */ |
| lemniskata | 7:99e5141a51dc | 117 | LPC_TXRX_DESC_T ptxd[LPC_NUM_BUFF_TXDESCS]; /**< Pointer to TX descriptor list */ |
| lemniskata | 7:99e5141a51dc | 118 | LPC_TXRX_STATUS_T ptxs[LPC_NUM_BUFF_TXDESCS]; /**< Pointer to TX statuses */ |
| lemniskata | 7:99e5141a51dc | 119 | LPC_TXRX_DESC_T prxd[LPC_NUM_BUFF_RXDESCS]; /**< Pointer to RX descriptor list */ |
| lemniskata | 7:99e5141a51dc | 120 | struct pbuf *rxb[LPC_NUM_BUFF_RXDESCS]; /**< RX pbuf pointer list, zero-copy mode */ |
| lemniskata | 7:99e5141a51dc | 121 | u32_t rx_fill_desc_index; /**< RX descriptor next available index */ |
| lemniskata | 7:99e5141a51dc | 122 | volatile u32_t rx_free_descs; /**< Count of free RX descriptors */ |
| lemniskata | 7:99e5141a51dc | 123 | struct pbuf *txb[LPC_NUM_BUFF_TXDESCS]; /**< TX pbuf pointer list, zero-copy mode */ |
| lemniskata | 7:99e5141a51dc | 124 | u32_t lpc_last_tx_idx; /**< TX last descriptor index, zero-copy mode */ |
| emilmont | 4:d827a085afd9 | 125 | #if NO_SYS == 0 |
| lemniskata | 7:99e5141a51dc | 126 | sys_sem_t RxSem; /**< RX receive thread wakeup semaphore */ |
| lemniskata | 7:99e5141a51dc | 127 | sys_sem_t TxCleanSem; /**< TX cleanup thread wakeup semaphore */ |
| lemniskata | 7:99e5141a51dc | 128 | sys_mutex_t TXLockMutex; /**< TX critical section mutex */ |
| lemniskata | 7:99e5141a51dc | 129 | sys_sem_t xTXDCountSem; /**< TX free buffer counting semaphore */ |
| emilmont | 4:d827a085afd9 | 130 | #endif |
| emilmont | 4:d827a085afd9 | 131 | }; |
| emilmont | 4:d827a085afd9 | 132 | |
| emilmont | 5:698d868a5285 | 133 | #if defined(TARGET_LPC4088) |
| emilmont | 5:698d868a5285 | 134 | # if defined (__ICCARM__) |
| emilmont | 5:698d868a5285 | 135 | # define ETHMEM_SECTION |
| emilmont | 5:698d868a5285 | 136 | # elif defined(TOOLCHAIN_GCC_CR) |
| emilmont | 5:698d868a5285 | 137 | # define ETHMEM_SECTION __attribute__((section(".data.$RamPeriph32"))) |
| emilmont | 5:698d868a5285 | 138 | # else |
| emilmont | 5:698d868a5285 | 139 | # define ETHMEM_SECTION __attribute__((section("AHBSRAM1"),aligned)) |
| emilmont | 5:698d868a5285 | 140 | # endif |
| emilmont | 5:698d868a5285 | 141 | #else |
| emilmont | 5:698d868a5285 | 142 | # define ETHMEM_SECTION ALIGNED(8) |
| emilmont | 5:698d868a5285 | 143 | #endif |
| emilmont | 5:698d868a5285 | 144 | |
| emilmont | 4:d827a085afd9 | 145 | /** \brief LPC EMAC driver work data |
| emilmont | 4:d827a085afd9 | 146 | */ |
| emilmont | 5:698d868a5285 | 147 | ETHMEM_SECTION struct lpc_enetdata lpc_enetdata; |
| emilmont | 4:d827a085afd9 | 148 | |
| emilmont | 4:d827a085afd9 | 149 | /* Write a value via the MII link (non-blocking) */ |
| emilmont | 4:d827a085afd9 | 150 | void lpc_mii_write_noblock(u32_t PhyReg, u32_t Value) |
| emilmont | 4:d827a085afd9 | 151 | { |
| lemniskata | 7:99e5141a51dc | 152 | /* Write value at PHY address and register */ |
| lemniskata | 7:99e5141a51dc | 153 | LPC_EMAC->MADR = (LPC_PHYDEF_PHYADDR << 8) | PhyReg; |
| lemniskata | 7:99e5141a51dc | 154 | LPC_EMAC->MWTD = Value; |
| emilmont | 4:d827a085afd9 | 155 | } |
| emilmont | 4:d827a085afd9 | 156 | |
| emilmont | 4:d827a085afd9 | 157 | /* Write a value via the MII link (blocking) */ |
| emilmont | 4:d827a085afd9 | 158 | err_t lpc_mii_write(u32_t PhyReg, u32_t Value) |
| emilmont | 4:d827a085afd9 | 159 | { |
| lemniskata | 7:99e5141a51dc | 160 | u32_t mst = 250; |
| lemniskata | 7:99e5141a51dc | 161 | err_t sts = ERR_OK; |
| emilmont | 4:d827a085afd9 | 162 | |
| lemniskata | 7:99e5141a51dc | 163 | /* Write value at PHY address and register */ |
| lemniskata | 7:99e5141a51dc | 164 | lpc_mii_write_noblock(PhyReg, Value); |
| emilmont | 4:d827a085afd9 | 165 | |
| lemniskata | 7:99e5141a51dc | 166 | /* Wait for unbusy status */ |
| lemniskata | 7:99e5141a51dc | 167 | while (mst > 0) { |
| lemniskata | 7:99e5141a51dc | 168 | sts = LPC_EMAC->MIND; |
| lemniskata | 7:99e5141a51dc | 169 | if ((sts & EMAC_MIND_BUSY) == 0) |
| lemniskata | 7:99e5141a51dc | 170 | mst = 0; |
| lemniskata | 7:99e5141a51dc | 171 | else { |
| lemniskata | 7:99e5141a51dc | 172 | mst--; |
| lemniskata | 7:99e5141a51dc | 173 | osDelay(1); |
| lemniskata | 7:99e5141a51dc | 174 | } |
| lemniskata | 7:99e5141a51dc | 175 | } |
| emilmont | 4:d827a085afd9 | 176 | |
| lemniskata | 7:99e5141a51dc | 177 | if (sts != 0) |
| lemniskata | 7:99e5141a51dc | 178 | sts = ERR_TIMEOUT; |
| emilmont | 4:d827a085afd9 | 179 | |
| lemniskata | 7:99e5141a51dc | 180 | return sts; |
| emilmont | 4:d827a085afd9 | 181 | } |
| emilmont | 4:d827a085afd9 | 182 | |
| emilmont | 4:d827a085afd9 | 183 | /* Reads current MII link busy status */ |
| emilmont | 4:d827a085afd9 | 184 | u32_t lpc_mii_is_busy(void) |
| emilmont | 4:d827a085afd9 | 185 | { |
| lemniskata | 7:99e5141a51dc | 186 | return (u32_t) (LPC_EMAC->MIND & EMAC_MIND_BUSY); |
| emilmont | 4:d827a085afd9 | 187 | } |
| emilmont | 4:d827a085afd9 | 188 | |
| emilmont | 4:d827a085afd9 | 189 | /* Starts a read operation via the MII link (non-blocking) */ |
| emilmont | 4:d827a085afd9 | 190 | u32_t lpc_mii_read_data(void) |
| emilmont | 4:d827a085afd9 | 191 | { |
| lemniskata | 7:99e5141a51dc | 192 | u32_t data = LPC_EMAC->MRDD; |
| lemniskata | 7:99e5141a51dc | 193 | LPC_EMAC->MCMD = 0; |
| emilmont | 4:d827a085afd9 | 194 | |
| lemniskata | 7:99e5141a51dc | 195 | return data; |
| emilmont | 4:d827a085afd9 | 196 | } |
| emilmont | 4:d827a085afd9 | 197 | |
| emilmont | 4:d827a085afd9 | 198 | /* Starts a read operation via the MII link (non-blocking) */ |
| emilmont | 4:d827a085afd9 | 199 | void lpc_mii_read_noblock(u32_t PhyReg) |
| emilmont | 4:d827a085afd9 | 200 | { |
| lemniskata | 7:99e5141a51dc | 201 | /* Read value at PHY address and register */ |
| lemniskata | 7:99e5141a51dc | 202 | LPC_EMAC->MADR = (LPC_PHYDEF_PHYADDR << 8) | PhyReg; |
| lemniskata | 7:99e5141a51dc | 203 | LPC_EMAC->MCMD = EMAC_MCMD_READ; |
| emilmont | 4:d827a085afd9 | 204 | } |
| emilmont | 4:d827a085afd9 | 205 | |
| emilmont | 4:d827a085afd9 | 206 | /* Read a value via the MII link (blocking) */ |
| emilmont | 4:d827a085afd9 | 207 | err_t lpc_mii_read(u32_t PhyReg, u32_t *data) |
| emilmont | 4:d827a085afd9 | 208 | { |
| lemniskata | 7:99e5141a51dc | 209 | u32_t mst = 250; |
| lemniskata | 7:99e5141a51dc | 210 | err_t sts = ERR_OK; |
| emilmont | 4:d827a085afd9 | 211 | |
| lemniskata | 7:99e5141a51dc | 212 | /* Read value at PHY address and register */ |
| lemniskata | 7:99e5141a51dc | 213 | lpc_mii_read_noblock(PhyReg); |
| emilmont | 4:d827a085afd9 | 214 | |
| lemniskata | 7:99e5141a51dc | 215 | /* Wait for unbusy status */ |
| lemniskata | 7:99e5141a51dc | 216 | while (mst > 0) { |
| lemniskata | 7:99e5141a51dc | 217 | sts = LPC_EMAC->MIND & ~EMAC_MIND_MII_LINK_FAIL; |
| lemniskata | 7:99e5141a51dc | 218 | if ((sts & EMAC_MIND_BUSY) == 0) { |
| lemniskata | 7:99e5141a51dc | 219 | mst = 0; |
| lemniskata | 7:99e5141a51dc | 220 | *data = LPC_EMAC->MRDD; |
| lemniskata | 7:99e5141a51dc | 221 | } else { |
| lemniskata | 7:99e5141a51dc | 222 | mst--; |
| lemniskata | 7:99e5141a51dc | 223 | osDelay(1); |
| lemniskata | 7:99e5141a51dc | 224 | } |
| lemniskata | 7:99e5141a51dc | 225 | } |
| emilmont | 4:d827a085afd9 | 226 | |
| lemniskata | 7:99e5141a51dc | 227 | LPC_EMAC->MCMD = 0; |
| emilmont | 4:d827a085afd9 | 228 | |
| lemniskata | 7:99e5141a51dc | 229 | if (sts != 0) |
| lemniskata | 7:99e5141a51dc | 230 | sts = ERR_TIMEOUT; |
| emilmont | 4:d827a085afd9 | 231 | |
| lemniskata | 7:99e5141a51dc | 232 | return sts; |
| emilmont | 4:d827a085afd9 | 233 | } |
| emilmont | 4:d827a085afd9 | 234 | |
| emilmont | 4:d827a085afd9 | 235 | /** \brief Queues a pbuf into the RX descriptor list |
| emilmont | 4:d827a085afd9 | 236 | * |
| emilmont | 4:d827a085afd9 | 237 | * \param[in] lpc_enetif Pointer to the drvier data structure |
| emilmont | 4:d827a085afd9 | 238 | * \param[in] p Pointer to pbuf to queue |
| emilmont | 4:d827a085afd9 | 239 | */ |
| emilmont | 4:d827a085afd9 | 240 | static void lpc_rxqueue_pbuf(struct lpc_enetdata *lpc_enetif, struct pbuf *p) |
| emilmont | 4:d827a085afd9 | 241 | { |
| lemniskata | 7:99e5141a51dc | 242 | u32_t idx; |
| emilmont | 4:d827a085afd9 | 243 | |
| lemniskata | 7:99e5141a51dc | 244 | /* Get next free descriptor index */ |
| lemniskata | 7:99e5141a51dc | 245 | idx = lpc_enetif->rx_fill_desc_index; |
| emilmont | 4:d827a085afd9 | 246 | |
| lemniskata | 7:99e5141a51dc | 247 | /* Setup descriptor and clear statuses */ |
| lemniskata | 7:99e5141a51dc | 248 | lpc_enetif->prxd[idx].control = EMAC_RCTRL_INT | ((u32_t) (p->len - 1)); |
| lemniskata | 7:99e5141a51dc | 249 | lpc_enetif->prxd[idx].packet = (u32_t) p->payload; |
| lemniskata | 7:99e5141a51dc | 250 | lpc_enetif->prxs[idx].statusinfo = 0xFFFFFFFF; |
| lemniskata | 7:99e5141a51dc | 251 | lpc_enetif->prxs[idx].statushashcrc = 0xFFFFFFFF; |
| emilmont | 4:d827a085afd9 | 252 | |
| lemniskata | 7:99e5141a51dc | 253 | /* Save pbuf pointer for push to network layer later */ |
| lemniskata | 7:99e5141a51dc | 254 | lpc_enetif->rxb[idx] = p; |
| emilmont | 4:d827a085afd9 | 255 | |
| lemniskata | 7:99e5141a51dc | 256 | /* Wrap at end of descriptor list */ |
| lemniskata | 7:99e5141a51dc | 257 | idx++; |
| lemniskata | 7:99e5141a51dc | 258 | if (idx >= LPC_NUM_BUFF_RXDESCS) |
| lemniskata | 7:99e5141a51dc | 259 | idx = 0; |
| emilmont | 4:d827a085afd9 | 260 | |
| lemniskata | 7:99e5141a51dc | 261 | /* Queue descriptor(s) */ |
| lemniskata | 7:99e5141a51dc | 262 | lpc_enetif->rx_free_descs -= 1; |
| lemniskata | 7:99e5141a51dc | 263 | lpc_enetif->rx_fill_desc_index = idx; |
| lemniskata | 7:99e5141a51dc | 264 | LPC_EMAC->RxConsumeIndex = idx; |
| emilmont | 4:d827a085afd9 | 265 | |
| lemniskata | 7:99e5141a51dc | 266 | LWIP_DEBUGF(UDP_LPC_EMAC | LWIP_DBG_TRACE, |
| lemniskata | 7:99e5141a51dc | 267 | ("lpc_rxqueue_pbuf: pbuf packet queued: %p (free desc=%d)\n", p, |
| lemniskata | 7:99e5141a51dc | 268 | lpc_enetif->rx_free_descs)); |
| emilmont | 4:d827a085afd9 | 269 | } |
| emilmont | 4:d827a085afd9 | 270 | |
| emilmont | 4:d827a085afd9 | 271 | /** \brief Attempt to allocate and requeue a new pbuf for RX |
| emilmont | 4:d827a085afd9 | 272 | * |
| emilmont | 4:d827a085afd9 | 273 | * \param[in] netif Pointer to the netif structure |
| emilmont | 4:d827a085afd9 | 274 | * \returns 1 if a packet was allocated and requeued, otherwise 0 |
| emilmont | 4:d827a085afd9 | 275 | */ |
| emilmont | 4:d827a085afd9 | 276 | s32_t lpc_rx_queue(struct netif *netif) |
| emilmont | 4:d827a085afd9 | 277 | { |
| lemniskata | 7:99e5141a51dc | 278 | struct lpc_enetdata *lpc_enetif = netif->state; |
| lemniskata | 7:99e5141a51dc | 279 | struct pbuf *p; |
| lemniskata | 7:99e5141a51dc | 280 | s32_t queued = 0; |
| emilmont | 4:d827a085afd9 | 281 | |
| lemniskata | 7:99e5141a51dc | 282 | /* Attempt to requeue as many packets as possible */ |
| lemniskata | 7:99e5141a51dc | 283 | while (lpc_enetif->rx_free_descs > 0) { |
| lemniskata | 7:99e5141a51dc | 284 | /* Allocate a pbuf from the pool. We need to allocate at the |
| lemniskata | 7:99e5141a51dc | 285 | maximum size as we don't know the size of the yet to be |
| lemniskata | 7:99e5141a51dc | 286 | received packet. */ |
| lemniskata | 7:99e5141a51dc | 287 | p = pbuf_alloc(PBUF_RAW, (u16_t) EMAC_ETH_MAX_FLEN, PBUF_RAM); |
| lemniskata | 7:99e5141a51dc | 288 | if (p == NULL) { |
| lemniskata | 7:99e5141a51dc | 289 | LWIP_DEBUGF(UDP_LPC_EMAC | LWIP_DBG_TRACE, |
| lemniskata | 7:99e5141a51dc | 290 | ("lpc_rx_queue: could not allocate RX pbuf (free desc=%d)\n", |
| lemniskata | 7:99e5141a51dc | 291 | lpc_enetif->rx_free_descs)); |
| lemniskata | 7:99e5141a51dc | 292 | return queued; |
| lemniskata | 7:99e5141a51dc | 293 | } |
| emilmont | 4:d827a085afd9 | 294 | |
| lemniskata | 7:99e5141a51dc | 295 | /* pbufs allocated from the RAM pool should be non-chained. */ |
| lemniskata | 7:99e5141a51dc | 296 | LWIP_ASSERT("lpc_rx_queue: pbuf is not contiguous (chained)", |
| lemniskata | 7:99e5141a51dc | 297 | pbuf_clen(p) <= 1); |
| emilmont | 4:d827a085afd9 | 298 | |
| lemniskata | 7:99e5141a51dc | 299 | /* Queue packet */ |
| lemniskata | 7:99e5141a51dc | 300 | lpc_rxqueue_pbuf(lpc_enetif, p); |
| emilmont | 4:d827a085afd9 | 301 | |
| lemniskata | 7:99e5141a51dc | 302 | /* Update queued count */ |
| lemniskata | 7:99e5141a51dc | 303 | queued++; |
| lemniskata | 7:99e5141a51dc | 304 | } |
| emilmont | 4:d827a085afd9 | 305 | |
| lemniskata | 7:99e5141a51dc | 306 | return queued; |
| emilmont | 4:d827a085afd9 | 307 | } |
| emilmont | 4:d827a085afd9 | 308 | |
| emilmont | 4:d827a085afd9 | 309 | /** \brief Sets up the RX descriptor ring buffers. |
| emilmont | 4:d827a085afd9 | 310 | * |
| emilmont | 4:d827a085afd9 | 311 | * This function sets up the descriptor list used for receive packets. |
| emilmont | 4:d827a085afd9 | 312 | * |
| emilmont | 4:d827a085afd9 | 313 | * \param[in] lpc_enetif Pointer to driver data structure |
| emilmont | 4:d827a085afd9 | 314 | * \returns Always returns ERR_OK |
| emilmont | 4:d827a085afd9 | 315 | */ |
| emilmont | 4:d827a085afd9 | 316 | static err_t lpc_rx_setup(struct lpc_enetdata *lpc_enetif) |
| emilmont | 4:d827a085afd9 | 317 | { |
| lemniskata | 7:99e5141a51dc | 318 | /* Setup pointers to RX structures */ |
| lemniskata | 7:99e5141a51dc | 319 | LPC_EMAC->RxDescriptor = (u32_t) &lpc_enetif->prxd[0]; |
| lemniskata | 7:99e5141a51dc | 320 | LPC_EMAC->RxStatus = (u32_t) &lpc_enetif->prxs[0]; |
| lemniskata | 7:99e5141a51dc | 321 | LPC_EMAC->RxDescriptorNumber = LPC_NUM_BUFF_RXDESCS - 1; |
| emilmont | 4:d827a085afd9 | 322 | |
| lemniskata | 7:99e5141a51dc | 323 | lpc_enetif->rx_free_descs = LPC_NUM_BUFF_RXDESCS; |
| lemniskata | 7:99e5141a51dc | 324 | lpc_enetif->rx_fill_desc_index = 0; |
| emilmont | 4:d827a085afd9 | 325 | |
| lemniskata | 7:99e5141a51dc | 326 | /* Build RX buffer and descriptors */ |
| lemniskata | 7:99e5141a51dc | 327 | lpc_rx_queue(lpc_enetif->netif); |
| emilmont | 4:d827a085afd9 | 328 | |
| lemniskata | 7:99e5141a51dc | 329 | return ERR_OK; |
| emilmont | 4:d827a085afd9 | 330 | } |
| emilmont | 4:d827a085afd9 | 331 | |
| emilmont | 4:d827a085afd9 | 332 | /** \brief Allocates a pbuf and returns the data from the incoming packet. |
| emilmont | 4:d827a085afd9 | 333 | * |
| emilmont | 4:d827a085afd9 | 334 | * \param[in] netif the lwip network interface structure for this lpc_enetif |
| emilmont | 4:d827a085afd9 | 335 | * \return a pbuf filled with the received packet (including MAC header) |
| emilmont | 4:d827a085afd9 | 336 | * NULL on memory error |
| emilmont | 4:d827a085afd9 | 337 | */ |
| emilmont | 4:d827a085afd9 | 338 | static struct pbuf *lpc_low_level_input(struct netif *netif) |
| emilmont | 4:d827a085afd9 | 339 | { |
| lemniskata | 7:99e5141a51dc | 340 | struct lpc_enetdata *lpc_enetif = netif->state; |
| lemniskata | 7:99e5141a51dc | 341 | struct pbuf *p = NULL; |
| lemniskata | 7:99e5141a51dc | 342 | u32_t idx, length; |
| emilmont | 4:d827a085afd9 | 343 | |
| emilmont | 4:d827a085afd9 | 344 | #ifdef LOCK_RX_THREAD |
| emilmont | 4:d827a085afd9 | 345 | #if NO_SYS == 0 |
| lemniskata | 7:99e5141a51dc | 346 | /* Get exclusive access */ |
| lemniskata | 7:99e5141a51dc | 347 | sys_mutex_lock(&lpc_enetif->TXLockMutex); |
| emilmont | 4:d827a085afd9 | 348 | #endif |
| emilmont | 4:d827a085afd9 | 349 | #endif |
| emilmont | 4:d827a085afd9 | 350 | |
| lemniskata | 7:99e5141a51dc | 351 | /* Monitor RX overrun status. This should never happen unless |
| lemniskata | 7:99e5141a51dc | 352 | (possibly) the internal bus is behing held up by something. |
| lemniskata | 7:99e5141a51dc | 353 | Unless your system is running at a very low clock speed or |
| lemniskata | 7:99e5141a51dc | 354 | there are possibilities that the internal buses may be held |
| lemniskata | 7:99e5141a51dc | 355 | up for a long time, this can probably safely be removed. */ |
| lemniskata | 7:99e5141a51dc | 356 | if (LPC_EMAC->IntStatus & EMAC_INT_RX_OVERRUN) { |
| lemniskata | 7:99e5141a51dc | 357 | LINK_STATS_INC(link.err); |
| lemniskata | 7:99e5141a51dc | 358 | LINK_STATS_INC(link.drop); |
| emilmont | 4:d827a085afd9 | 359 | |
| lemniskata | 7:99e5141a51dc | 360 | /* Temporarily disable RX */ |
| lemniskata | 7:99e5141a51dc | 361 | LPC_EMAC->MAC1 &= ~EMAC_MAC1_REC_EN; |
| emilmont | 4:d827a085afd9 | 362 | |
| lemniskata | 7:99e5141a51dc | 363 | /* Reset the RX side */ |
| lemniskata | 7:99e5141a51dc | 364 | LPC_EMAC->MAC1 |= EMAC_MAC1_RES_RX; |
| lemniskata | 7:99e5141a51dc | 365 | LPC_EMAC->IntClear = EMAC_INT_RX_OVERRUN; |
| emilmont | 4:d827a085afd9 | 366 | |
| lemniskata | 7:99e5141a51dc | 367 | /* De-allocate all queued RX pbufs */ |
| lemniskata | 7:99e5141a51dc | 368 | for (idx = 0; idx < LPC_NUM_BUFF_RXDESCS; idx++) { |
| lemniskata | 7:99e5141a51dc | 369 | if (lpc_enetif->rxb[idx] != NULL) { |
| lemniskata | 7:99e5141a51dc | 370 | pbuf_free(lpc_enetif->rxb[idx]); |
| lemniskata | 7:99e5141a51dc | 371 | lpc_enetif->rxb[idx] = NULL; |
| lemniskata | 7:99e5141a51dc | 372 | } |
| lemniskata | 7:99e5141a51dc | 373 | } |
| emilmont | 4:d827a085afd9 | 374 | |
| lemniskata | 7:99e5141a51dc | 375 | /* Start RX side again */ |
| lemniskata | 7:99e5141a51dc | 376 | lpc_rx_setup(lpc_enetif); |
| emilmont | 4:d827a085afd9 | 377 | |
| lemniskata | 7:99e5141a51dc | 378 | /* Re-enable RX */ |
| lemniskata | 7:99e5141a51dc | 379 | LPC_EMAC->MAC1 |= EMAC_MAC1_REC_EN; |
| emilmont | 4:d827a085afd9 | 380 | |
| emilmont | 4:d827a085afd9 | 381 | #ifdef LOCK_RX_THREAD |
| emilmont | 4:d827a085afd9 | 382 | #if NO_SYS == 0 |
| lemniskata | 7:99e5141a51dc | 383 | sys_mutex_unlock(&lpc_enetif->TXLockMutex); |
| emilmont | 4:d827a085afd9 | 384 | #endif |
| emilmont | 4:d827a085afd9 | 385 | #endif |
| emilmont | 4:d827a085afd9 | 386 | |
| lemniskata | 7:99e5141a51dc | 387 | return NULL; |
| lemniskata | 7:99e5141a51dc | 388 | } |
| emilmont | 4:d827a085afd9 | 389 | |
| lemniskata | 7:99e5141a51dc | 390 | /* Determine if a frame has been received */ |
| lemniskata | 7:99e5141a51dc | 391 | length = 0; |
| lemniskata | 7:99e5141a51dc | 392 | idx = LPC_EMAC->RxConsumeIndex; |
| lemniskata | 7:99e5141a51dc | 393 | if (LPC_EMAC->RxProduceIndex != idx) { |
| lemniskata | 7:99e5141a51dc | 394 | /* Handle errors */ |
| lemniskata | 7:99e5141a51dc | 395 | if (lpc_enetif->prxs[idx].statusinfo & (EMAC_RINFO_CRC_ERR | |
| lemniskata | 7:99e5141a51dc | 396 | EMAC_RINFO_SYM_ERR | EMAC_RINFO_ALIGN_ERR | EMAC_RINFO_LEN_ERR)) { |
| emilmont | 4:d827a085afd9 | 397 | #if LINK_STATS |
| lemniskata | 7:99e5141a51dc | 398 | if (lpc_enetif->prxs[idx].statusinfo & (EMAC_RINFO_CRC_ERR | |
| lemniskata | 7:99e5141a51dc | 399 | EMAC_RINFO_SYM_ERR | EMAC_RINFO_ALIGN_ERR)) |
| lemniskata | 7:99e5141a51dc | 400 | LINK_STATS_INC(link.chkerr); |
| lemniskata | 7:99e5141a51dc | 401 | if (lpc_enetif->prxs[idx].statusinfo & EMAC_RINFO_LEN_ERR) |
| lemniskata | 7:99e5141a51dc | 402 | LINK_STATS_INC(link.lenerr); |
| emilmont | 4:d827a085afd9 | 403 | #endif |
| emilmont | 4:d827a085afd9 | 404 | |
| lemniskata | 7:99e5141a51dc | 405 | /* Drop the frame */ |
| lemniskata | 7:99e5141a51dc | 406 | LINK_STATS_INC(link.drop); |
| emilmont | 4:d827a085afd9 | 407 | |
| lemniskata | 7:99e5141a51dc | 408 | /* Re-queue the pbuf for receive */ |
| lemniskata | 7:99e5141a51dc | 409 | lpc_enetif->rx_free_descs++; |
| lemniskata | 7:99e5141a51dc | 410 | p = lpc_enetif->rxb[idx]; |
| lemniskata | 7:99e5141a51dc | 411 | lpc_enetif->rxb[idx] = NULL; |
| lemniskata | 7:99e5141a51dc | 412 | lpc_rxqueue_pbuf(lpc_enetif, p); |
| emilmont | 4:d827a085afd9 | 413 | |
| lemniskata | 7:99e5141a51dc | 414 | LWIP_DEBUGF(UDP_LPC_EMAC | LWIP_DBG_TRACE, |
| lemniskata | 7:99e5141a51dc | 415 | ("lpc_low_level_input: Packet dropped with errors (0x%x)\n", |
| lemniskata | 7:99e5141a51dc | 416 | lpc_enetif->prxs[idx].statusinfo)); |
| lemniskata | 7:99e5141a51dc | 417 | |
| lemniskata | 7:99e5141a51dc | 418 | p = NULL; |
| lemniskata | 7:99e5141a51dc | 419 | } else { |
| lemniskata | 7:99e5141a51dc | 420 | /* A packet is waiting, get length */ |
| lemniskata | 7:99e5141a51dc | 421 | length = (lpc_enetif->prxs[idx].statusinfo & 0x7FF) + 1; |
| emilmont | 4:d827a085afd9 | 422 | |
| lemniskata | 7:99e5141a51dc | 423 | /* Zero-copy */ |
| lemniskata | 7:99e5141a51dc | 424 | p = lpc_enetif->rxb[idx]; |
| lemniskata | 7:99e5141a51dc | 425 | p->len = (u16_t) length; |
| emilmont | 4:d827a085afd9 | 426 | |
| lemniskata | 7:99e5141a51dc | 427 | /* Free pbuf from desriptor */ |
| lemniskata | 7:99e5141a51dc | 428 | lpc_enetif->rxb[idx] = NULL; |
| lemniskata | 7:99e5141a51dc | 429 | lpc_enetif->rx_free_descs++; |
| emilmont | 4:d827a085afd9 | 430 | |
| lemniskata | 7:99e5141a51dc | 431 | LWIP_DEBUGF(UDP_LPC_EMAC | LWIP_DBG_TRACE, |
| lemniskata | 7:99e5141a51dc | 432 | ("lpc_low_level_input: Packet received: %p, size %d (index=%d)\n", |
| lemniskata | 7:99e5141a51dc | 433 | p, length, idx)); |
| emilmont | 4:d827a085afd9 | 434 | |
| lemniskata | 7:99e5141a51dc | 435 | /* Save size */ |
| lemniskata | 7:99e5141a51dc | 436 | p->tot_len = (u16_t) length; |
| lemniskata | 7:99e5141a51dc | 437 | LINK_STATS_INC(link.recv); |
| emilmont | 4:d827a085afd9 | 438 | |
| lemniskata | 7:99e5141a51dc | 439 | /* Queue new buffer(s) */ |
| lemniskata | 7:99e5141a51dc | 440 | lpc_rx_queue(lpc_enetif->netif); |
| lemniskata | 7:99e5141a51dc | 441 | } |
| lemniskata | 7:99e5141a51dc | 442 | } |
| emilmont | 4:d827a085afd9 | 443 | |
| emilmont | 4:d827a085afd9 | 444 | #ifdef LOCK_RX_THREAD |
| emilmont | 4:d827a085afd9 | 445 | #if NO_SYS == 0 |
| lemniskata | 7:99e5141a51dc | 446 | sys_mutex_unlock(&lpc_enetif->TXLockMutex); |
| emilmont | 4:d827a085afd9 | 447 | #endif |
| emilmont | 4:d827a085afd9 | 448 | #endif |
| emilmont | 4:d827a085afd9 | 449 | |
| lemniskata | 7:99e5141a51dc | 450 | return p; |
| emilmont | 4:d827a085afd9 | 451 | } |
| emilmont | 4:d827a085afd9 | 452 | |
| emilmont | 4:d827a085afd9 | 453 | /** \brief Attempt to read a packet from the EMAC interface. |
| emilmont | 4:d827a085afd9 | 454 | * |
| emilmont | 4:d827a085afd9 | 455 | * \param[in] netif the lwip network interface structure for this lpc_enetif |
| emilmont | 4:d827a085afd9 | 456 | */ |
| emilmont | 4:d827a085afd9 | 457 | void lpc_enetif_input(struct netif *netif) |
| emilmont | 4:d827a085afd9 | 458 | { |
| lemniskata | 7:99e5141a51dc | 459 | struct eth_hdr *ethhdr; |
| lemniskata | 7:99e5141a51dc | 460 | struct pbuf *p; |
| emilmont | 4:d827a085afd9 | 461 | |
| lemniskata | 7:99e5141a51dc | 462 | /* move received packet into a new pbuf */ |
| lemniskata | 7:99e5141a51dc | 463 | p = lpc_low_level_input(netif); |
| lemniskata | 7:99e5141a51dc | 464 | if (p == NULL) |
| lemniskata | 7:99e5141a51dc | 465 | return; |
| emilmont | 4:d827a085afd9 | 466 | |
| lemniskata | 7:99e5141a51dc | 467 | /* points to packet payload, which starts with an Ethernet header */ |
| lemniskata | 7:99e5141a51dc | 468 | ethhdr = p->payload; |
| emilmont | 4:d827a085afd9 | 469 | |
| lemniskata | 7:99e5141a51dc | 470 | switch (htons(ethhdr->type)) { |
| lemniskata | 7:99e5141a51dc | 471 | case ETHTYPE_IP: |
| lemniskata | 7:99e5141a51dc | 472 | case ETHTYPE_ARP: |
| emilmont | 4:d827a085afd9 | 473 | #if PPPOE_SUPPORT |
| lemniskata | 7:99e5141a51dc | 474 | case ETHTYPE_PPPOEDISC: |
| lemniskata | 7:99e5141a51dc | 475 | case ETHTYPE_PPPOE: |
| emilmont | 4:d827a085afd9 | 476 | #endif /* PPPOE_SUPPORT */ |
| lemniskata | 7:99e5141a51dc | 477 | /* full packet send to tcpip_thread to process */ |
| lemniskata | 7:99e5141a51dc | 478 | if (netif->input(p, netif) != ERR_OK) { |
| lemniskata | 7:99e5141a51dc | 479 | LWIP_DEBUGF(NETIF_DEBUG, ("lpc_enetif_input: IP input error\n")); |
| lemniskata | 7:99e5141a51dc | 480 | /* Free buffer */ |
| lemniskata | 7:99e5141a51dc | 481 | pbuf_free(p); |
| lemniskata | 7:99e5141a51dc | 482 | } |
| lemniskata | 7:99e5141a51dc | 483 | break; |
| emilmont | 4:d827a085afd9 | 484 | |
| lemniskata | 7:99e5141a51dc | 485 | default: |
| lemniskata | 7:99e5141a51dc | 486 | /* Return buffer */ |
| lemniskata | 7:99e5141a51dc | 487 | pbuf_free(p); |
| lemniskata | 7:99e5141a51dc | 488 | break; |
| lemniskata | 7:99e5141a51dc | 489 | } |
| emilmont | 4:d827a085afd9 | 490 | } |
| emilmont | 4:d827a085afd9 | 491 | |
| emilmont | 4:d827a085afd9 | 492 | /** \brief Determine if the passed address is usable for the ethernet |
| emilmont | 4:d827a085afd9 | 493 | * DMA controller. |
| emilmont | 4:d827a085afd9 | 494 | * |
| emilmont | 4:d827a085afd9 | 495 | * \param[in] addr Address of packet to check for DMA safe operation |
| emilmont | 4:d827a085afd9 | 496 | * \return 1 if the packet address is not safe, otherwise 0 |
| emilmont | 4:d827a085afd9 | 497 | */ |
| emilmont | 4:d827a085afd9 | 498 | static s32_t lpc_packet_addr_notsafe(void *addr) { |
| lemniskata | 7:99e5141a51dc | 499 | /* Check for legal address ranges */ |
| emilmont | 5:698d868a5285 | 500 | #if defined(TARGET_LPC1768) |
| lemniskata | 7:99e5141a51dc | 501 | if ((((u32_t) addr >= 0x2007C000) && ((u32_t) addr < 0x20083FFF))) { |
| emilmont | 5:698d868a5285 | 502 | #elif defined(TARGET_LPC4088) |
| lemniskata | 7:99e5141a51dc | 503 | if ((((u32_t) addr >= 0x20000000) && ((u32_t) addr < 0x20007FFF))) { |
| emilmont | 5:698d868a5285 | 504 | #endif |
| lemniskata | 7:99e5141a51dc | 505 | return 0; |
| lemniskata | 7:99e5141a51dc | 506 | } |
| lemniskata | 7:99e5141a51dc | 507 | return 1; |
| emilmont | 4:d827a085afd9 | 508 | } |
| emilmont | 4:d827a085afd9 | 509 | |
| emilmont | 4:d827a085afd9 | 510 | /** \brief Sets up the TX descriptor ring buffers. |
| emilmont | 4:d827a085afd9 | 511 | * |
| emilmont | 4:d827a085afd9 | 512 | * This function sets up the descriptor list used for transmit packets. |
| emilmont | 4:d827a085afd9 | 513 | * |
| emilmont | 4:d827a085afd9 | 514 | * \param[in] lpc_enetif Pointer to driver data structure |
| emilmont | 4:d827a085afd9 | 515 | */ |
| emilmont | 4:d827a085afd9 | 516 | static err_t lpc_tx_setup(struct lpc_enetdata *lpc_enetif) |
| emilmont | 4:d827a085afd9 | 517 | { |
| lemniskata | 7:99e5141a51dc | 518 | s32_t idx; |
| emilmont | 4:d827a085afd9 | 519 | |
| lemniskata | 7:99e5141a51dc | 520 | /* Build TX descriptors for local buffers */ |
| lemniskata | 7:99e5141a51dc | 521 | for (idx = 0; idx < LPC_NUM_BUFF_TXDESCS; idx++) { |
| lemniskata | 7:99e5141a51dc | 522 | lpc_enetif->ptxd[idx].control = 0; |
| lemniskata | 7:99e5141a51dc | 523 | lpc_enetif->ptxs[idx].statusinfo = 0xFFFFFFFF; |
| lemniskata | 7:99e5141a51dc | 524 | } |
| emilmont | 4:d827a085afd9 | 525 | |
| lemniskata | 7:99e5141a51dc | 526 | /* Setup pointers to TX structures */ |
| lemniskata | 7:99e5141a51dc | 527 | LPC_EMAC->TxDescriptor = (u32_t) &lpc_enetif->ptxd[0]; |
| lemniskata | 7:99e5141a51dc | 528 | LPC_EMAC->TxStatus = (u32_t) &lpc_enetif->ptxs[0]; |
| lemniskata | 7:99e5141a51dc | 529 | LPC_EMAC->TxDescriptorNumber = LPC_NUM_BUFF_TXDESCS - 1; |
| emilmont | 4:d827a085afd9 | 530 | |
| lemniskata | 7:99e5141a51dc | 531 | lpc_enetif->lpc_last_tx_idx = 0; |
| emilmont | 4:d827a085afd9 | 532 | |
| lemniskata | 7:99e5141a51dc | 533 | return ERR_OK; |
| emilmont | 4:d827a085afd9 | 534 | } |
| emilmont | 4:d827a085afd9 | 535 | |
| emilmont | 4:d827a085afd9 | 536 | /** \brief Free TX buffers that are complete |
| emilmont | 4:d827a085afd9 | 537 | * |
| emilmont | 4:d827a085afd9 | 538 | * \param[in] lpc_enetif Pointer to driver data structure |
| emilmont | 4:d827a085afd9 | 539 | * \param[in] cidx EMAC current descriptor comsumer index |
| emilmont | 4:d827a085afd9 | 540 | */ |
| emilmont | 4:d827a085afd9 | 541 | static void lpc_tx_reclaim_st(struct lpc_enetdata *lpc_enetif, u32_t cidx) |
| emilmont | 4:d827a085afd9 | 542 | { |
| emilmont | 4:d827a085afd9 | 543 | #if NO_SYS == 0 |
| lemniskata | 7:99e5141a51dc | 544 | /* Get exclusive access */ |
| lemniskata | 7:99e5141a51dc | 545 | sys_mutex_lock(&lpc_enetif->TXLockMutex); |
| emilmont | 4:d827a085afd9 | 546 | #endif |
| emilmont | 4:d827a085afd9 | 547 | |
| lemniskata | 7:99e5141a51dc | 548 | while (cidx != lpc_enetif->lpc_last_tx_idx) { |
| lemniskata | 7:99e5141a51dc | 549 | if (lpc_enetif->txb[lpc_enetif->lpc_last_tx_idx] != NULL) { |
| lemniskata | 7:99e5141a51dc | 550 | LWIP_DEBUGF(UDP_LPC_EMAC | LWIP_DBG_TRACE, |
| lemniskata | 7:99e5141a51dc | 551 | ("lpc_tx_reclaim_st: Freeing packet %p (index %d)\n", |
| lemniskata | 7:99e5141a51dc | 552 | lpc_enetif->txb[lpc_enetif->lpc_last_tx_idx], |
| lemniskata | 7:99e5141a51dc | 553 | lpc_enetif->lpc_last_tx_idx)); |
| lemniskata | 7:99e5141a51dc | 554 | pbuf_free(lpc_enetif->txb[lpc_enetif->lpc_last_tx_idx]); |
| lemniskata | 7:99e5141a51dc | 555 | lpc_enetif->txb[lpc_enetif->lpc_last_tx_idx] = NULL; |
| lemniskata | 7:99e5141a51dc | 556 | } |
| emilmont | 4:d827a085afd9 | 557 | |
| emilmont | 4:d827a085afd9 | 558 | #if NO_SYS == 0 |
| lemniskata | 7:99e5141a51dc | 559 | osSemaphoreRelease(lpc_enetif->xTXDCountSem.id); |
| emilmont | 4:d827a085afd9 | 560 | #endif |
| lemniskata | 7:99e5141a51dc | 561 | lpc_enetif->lpc_last_tx_idx++; |
| lemniskata | 7:99e5141a51dc | 562 | if (lpc_enetif->lpc_last_tx_idx >= LPC_NUM_BUFF_TXDESCS) |
| lemniskata | 7:99e5141a51dc | 563 | lpc_enetif->lpc_last_tx_idx = 0; |
| lemniskata | 7:99e5141a51dc | 564 | } |
| emilmont | 4:d827a085afd9 | 565 | |
| emilmont | 4:d827a085afd9 | 566 | #if NO_SYS == 0 |
| lemniskata | 7:99e5141a51dc | 567 | /* Restore access */ |
| lemniskata | 7:99e5141a51dc | 568 | sys_mutex_unlock(&lpc_enetif->TXLockMutex); |
| emilmont | 4:d827a085afd9 | 569 | #endif |
| emilmont | 4:d827a085afd9 | 570 | } |
| emilmont | 4:d827a085afd9 | 571 | |
| emilmont | 4:d827a085afd9 | 572 | /** \brief User call for freeingTX buffers that are complete |
| emilmont | 4:d827a085afd9 | 573 | * |
| emilmont | 4:d827a085afd9 | 574 | * \param[in] netif the lwip network interface structure for this lpc_enetif |
| emilmont | 4:d827a085afd9 | 575 | */ |
| emilmont | 4:d827a085afd9 | 576 | void lpc_tx_reclaim(struct netif *netif) |
| emilmont | 4:d827a085afd9 | 577 | { |
| lemniskata | 7:99e5141a51dc | 578 | lpc_tx_reclaim_st((struct lpc_enetdata *) netif->state, |
| lemniskata | 7:99e5141a51dc | 579 | LPC_EMAC->TxConsumeIndex); |
| emilmont | 4:d827a085afd9 | 580 | } |
| emilmont | 4:d827a085afd9 | 581 | |
| emilmont | 4:d827a085afd9 | 582 | /** \brief Polls if an available TX descriptor is ready. Can be used to |
| emilmont | 4:d827a085afd9 | 583 | * determine if the low level transmit function will block. |
| emilmont | 4:d827a085afd9 | 584 | * |
| emilmont | 4:d827a085afd9 | 585 | * \param[in] netif the lwip network interface structure for this lpc_enetif |
| emilmont | 4:d827a085afd9 | 586 | * \return 0 if no descriptors are read, or >0 |
| emilmont | 4:d827a085afd9 | 587 | */ |
| emilmont | 4:d827a085afd9 | 588 | s32_t lpc_tx_ready(struct netif *netif) |
| emilmont | 4:d827a085afd9 | 589 | { |
| lemniskata | 7:99e5141a51dc | 590 | s32_t fb; |
| lemniskata | 7:99e5141a51dc | 591 | u32_t idx, cidx; |
| emilmont | 4:d827a085afd9 | 592 | |
| lemniskata | 7:99e5141a51dc | 593 | cidx = LPC_EMAC->TxConsumeIndex; |
| lemniskata | 7:99e5141a51dc | 594 | idx = LPC_EMAC->TxProduceIndex; |
| emilmont | 4:d827a085afd9 | 595 | |
| lemniskata | 7:99e5141a51dc | 596 | /* Determine number of free buffers */ |
| lemniskata | 7:99e5141a51dc | 597 | if (idx == cidx) |
| lemniskata | 7:99e5141a51dc | 598 | fb = LPC_NUM_BUFF_TXDESCS; |
| lemniskata | 7:99e5141a51dc | 599 | else if (cidx > idx) |
| lemniskata | 7:99e5141a51dc | 600 | fb = (LPC_NUM_BUFF_TXDESCS - 1) - |
| lemniskata | 7:99e5141a51dc | 601 | ((idx + LPC_NUM_BUFF_TXDESCS) - cidx); |
| lemniskata | 7:99e5141a51dc | 602 | else |
| lemniskata | 7:99e5141a51dc | 603 | fb = (LPC_NUM_BUFF_TXDESCS - 1) - (cidx - idx); |
| emilmont | 4:d827a085afd9 | 604 | |
| lemniskata | 7:99e5141a51dc | 605 | return fb; |
| emilmont | 4:d827a085afd9 | 606 | } |
| emilmont | 4:d827a085afd9 | 607 | |
| emilmont | 4:d827a085afd9 | 608 | /** \brief Low level output of a packet. Never call this from an |
| emilmont | 4:d827a085afd9 | 609 | * interrupt context, as it may block until TX descriptors |
| emilmont | 4:d827a085afd9 | 610 | * become available. |
| emilmont | 4:d827a085afd9 | 611 | * |
| emilmont | 4:d827a085afd9 | 612 | * \param[in] netif the lwip network interface structure for this lpc_enetif |
| emilmont | 4:d827a085afd9 | 613 | * \param[in] p the MAC packet to send (e.g. IP packet including MAC addresses and type) |
| emilmont | 4:d827a085afd9 | 614 | * \return ERR_OK if the packet could be sent or an err_t value if the packet couldn't be sent |
| emilmont | 4:d827a085afd9 | 615 | */ |
| emilmont | 4:d827a085afd9 | 616 | static err_t lpc_low_level_output(struct netif *netif, struct pbuf *p) |
| emilmont | 4:d827a085afd9 | 617 | { |
| lemniskata | 7:99e5141a51dc | 618 | struct lpc_enetdata *lpc_enetif = netif->state; |
| lemniskata | 7:99e5141a51dc | 619 | struct pbuf *q; |
| lemniskata | 7:99e5141a51dc | 620 | u8_t *dst; |
| emilmont | 4:d827a085afd9 | 621 | u32_t idx; |
| lemniskata | 7:99e5141a51dc | 622 | struct pbuf *np; |
| lemniskata | 7:99e5141a51dc | 623 | u32_t dn, notdmasafe = 0; |
| emilmont | 4:d827a085afd9 | 624 | |
| lemniskata | 7:99e5141a51dc | 625 | /* Zero-copy TX buffers may be fragmented across mutliple payload |
| lemniskata | 7:99e5141a51dc | 626 | chains. Determine the number of descriptors needed for the |
| lemniskata | 7:99e5141a51dc | 627 | transfer. The pbuf chaining can be a mess! */ |
| lemniskata | 7:99e5141a51dc | 628 | dn = (u32_t) pbuf_clen(p); |
| emilmont | 4:d827a085afd9 | 629 | |
| lemniskata | 7:99e5141a51dc | 630 | /* Test to make sure packet addresses are DMA safe. A DMA safe |
| lemniskata | 7:99e5141a51dc | 631 | address is once that uses external memory or periphheral RAM. |
| lemniskata | 7:99e5141a51dc | 632 | IRAM and FLASH are not safe! */ |
| lemniskata | 7:99e5141a51dc | 633 | for (q = p; q != NULL; q = q->next) |
| lemniskata | 7:99e5141a51dc | 634 | notdmasafe += lpc_packet_addr_notsafe(q->payload); |
| emilmont | 4:d827a085afd9 | 635 | |
| emilmont | 4:d827a085afd9 | 636 | #if LPC_TX_PBUF_BOUNCE_EN==1 |
| lemniskata | 7:99e5141a51dc | 637 | /* If the pbuf is not DMA safe, a new bounce buffer (pbuf) will be |
| lemniskata | 7:99e5141a51dc | 638 | created that will be used instead. This requires an copy from the |
| lemniskata | 7:99e5141a51dc | 639 | non-safe DMA region to the new pbuf */ |
| lemniskata | 7:99e5141a51dc | 640 | if (notdmasafe) { |
| lemniskata | 7:99e5141a51dc | 641 | /* Allocate a pbuf in DMA memory */ |
| lemniskata | 7:99e5141a51dc | 642 | np = pbuf_alloc(PBUF_RAW, p->tot_len, PBUF_RAM); |
| lemniskata | 7:99e5141a51dc | 643 | if (np == NULL) |
| lemniskata | 7:99e5141a51dc | 644 | return ERR_MEM; |
| emilmont | 4:d827a085afd9 | 645 | |
| lemniskata | 7:99e5141a51dc | 646 | /* This buffer better be contiguous! */ |
| lemniskata | 7:99e5141a51dc | 647 | LWIP_ASSERT("lpc_low_level_output: New transmit pbuf is chained", |
| lemniskata | 7:99e5141a51dc | 648 | (pbuf_clen(np) == 1)); |
| emilmont | 4:d827a085afd9 | 649 | |
| lemniskata | 7:99e5141a51dc | 650 | /* Copy to DMA safe pbuf */ |
| lemniskata | 7:99e5141a51dc | 651 | dst = (u8_t *) np->payload; |
| lemniskata | 7:99e5141a51dc | 652 | for(q = p; q != NULL; q = q->next) { |
| lemniskata | 7:99e5141a51dc | 653 | /* Copy the buffer to the descriptor's buffer */ |
| lemniskata | 7:99e5141a51dc | 654 | MEMCPY(dst, (u8_t *) q->payload, q->len); |
| lemniskata | 7:99e5141a51dc | 655 | dst += q->len; |
| lemniskata | 7:99e5141a51dc | 656 | } |
| lemniskata | 7:99e5141a51dc | 657 | np->len = p->tot_len; |
| emilmont | 4:d827a085afd9 | 658 | |
| lemniskata | 7:99e5141a51dc | 659 | LWIP_DEBUGF(UDP_LPC_EMAC | LWIP_DBG_TRACE, |
| lemniskata | 7:99e5141a51dc | 660 | ("lpc_low_level_output: Switched to DMA safe buffer, old=%p, new=%p\n", |
| lemniskata | 7:99e5141a51dc | 661 | q, np)); |
| emilmont | 4:d827a085afd9 | 662 | |
| lemniskata | 7:99e5141a51dc | 663 | /* use the new buffer for descrptor queueing. The original pbuf will |
| lemniskata | 7:99e5141a51dc | 664 | be de-allocated outsuide this driver. */ |
| lemniskata | 7:99e5141a51dc | 665 | p = np; |
| lemniskata | 7:99e5141a51dc | 666 | dn = 1; |
| lemniskata | 7:99e5141a51dc | 667 | } |
| emilmont | 4:d827a085afd9 | 668 | #else |
| lemniskata | 7:99e5141a51dc | 669 | if (notdmasafe) |
| lemniskata | 7:99e5141a51dc | 670 | LWIP_ASSERT("lpc_low_level_output: Not a DMA safe pbuf", |
| lemniskata | 7:99e5141a51dc | 671 | (notdmasafe == 0)); |
| emilmont | 4:d827a085afd9 | 672 | #endif |
| emilmont | 4:d827a085afd9 | 673 | |
| lemniskata | 7:99e5141a51dc | 674 | /* Wait until enough descriptors are available for the transfer. */ |
| lemniskata | 7:99e5141a51dc | 675 | /* THIS WILL BLOCK UNTIL THERE ARE ENOUGH DESCRIPTORS AVAILABLE */ |
| lemniskata | 7:99e5141a51dc | 676 | while (dn > lpc_tx_ready(netif)) |
| emilmont | 4:d827a085afd9 | 677 | #if NO_SYS == 0 |
| lemniskata | 7:99e5141a51dc | 678 | osSemaphoreWait(lpc_enetif->xTXDCountSem.id, osWaitForever); |
| emilmont | 4:d827a085afd9 | 679 | #else |
| lemniskata | 7:99e5141a51dc | 680 | osDelay(1); |
| emilmont | 4:d827a085afd9 | 681 | #endif |
| emilmont | 4:d827a085afd9 | 682 | |
| lemniskata | 7:99e5141a51dc | 683 | /* Get free TX buffer index */ |
| lemniskata | 7:99e5141a51dc | 684 | idx = LPC_EMAC->TxProduceIndex; |
| emilmont | 4:d827a085afd9 | 685 | |
| emilmont | 4:d827a085afd9 | 686 | #if NO_SYS == 0 |
| lemniskata | 7:99e5141a51dc | 687 | /* Get exclusive access */ |
| lemniskata | 7:99e5141a51dc | 688 | sys_mutex_lock(&lpc_enetif->TXLockMutex); |
| emilmont | 4:d827a085afd9 | 689 | #endif |
| emilmont | 4:d827a085afd9 | 690 | |
| lemniskata | 7:99e5141a51dc | 691 | /* Prevent LWIP from de-allocating this pbuf. The driver will |
| lemniskata | 7:99e5141a51dc | 692 | free it once it's been transmitted. */ |
| lemniskata | 7:99e5141a51dc | 693 | if (!notdmasafe) |
| lemniskata | 7:99e5141a51dc | 694 | pbuf_ref(p); |
| emilmont | 4:d827a085afd9 | 695 | |
| lemniskata | 7:99e5141a51dc | 696 | /* Setup transfers */ |
| lemniskata | 7:99e5141a51dc | 697 | q = p; |
| lemniskata | 7:99e5141a51dc | 698 | while (dn > 0) { |
| lemniskata | 7:99e5141a51dc | 699 | dn--; |
| emilmont | 4:d827a085afd9 | 700 | |
| lemniskata | 7:99e5141a51dc | 701 | /* Only save pointer to free on last descriptor */ |
| lemniskata | 7:99e5141a51dc | 702 | if (dn == 0) { |
| lemniskata | 7:99e5141a51dc | 703 | /* Save size of packet and signal it's ready */ |
| lemniskata | 7:99e5141a51dc | 704 | lpc_enetif->ptxd[idx].control = (q->len - 1) | EMAC_TCTRL_INT | |
| lemniskata | 7:99e5141a51dc | 705 | EMAC_TCTRL_LAST; |
| emilmont | 4:d827a085afd9 | 706 | lpc_enetif->txb[idx] = p; |
| lemniskata | 7:99e5141a51dc | 707 | } |
| lemniskata | 7:99e5141a51dc | 708 | else { |
| lemniskata | 7:99e5141a51dc | 709 | /* Save size of packet, descriptor is not last */ |
| lemniskata | 7:99e5141a51dc | 710 | lpc_enetif->ptxd[idx].control = (q->len - 1) | EMAC_TCTRL_INT; |
| lemniskata | 7:99e5141a51dc | 711 | lpc_enetif->txb[idx] = NULL; |
| lemniskata | 7:99e5141a51dc | 712 | } |
| emilmont | 4:d827a085afd9 | 713 | |
| lemniskata | 7:99e5141a51dc | 714 | LWIP_DEBUGF(UDP_LPC_EMAC | LWIP_DBG_TRACE, |
| lemniskata | 7:99e5141a51dc | 715 | ("lpc_low_level_output: pbuf packet(%p) sent, chain#=%d," |
| lemniskata | 7:99e5141a51dc | 716 | " size = %d (index=%d)\n", q->payload, dn, q->len, idx)); |
| emilmont | 4:d827a085afd9 | 717 | |
| lemniskata | 7:99e5141a51dc | 718 | lpc_enetif->ptxd[idx].packet = (u32_t) q->payload; |
| emilmont | 4:d827a085afd9 | 719 | |
| lemniskata | 7:99e5141a51dc | 720 | q = q->next; |
| emilmont | 4:d827a085afd9 | 721 | |
| lemniskata | 7:99e5141a51dc | 722 | idx++; |
| lemniskata | 7:99e5141a51dc | 723 | if (idx >= LPC_NUM_BUFF_TXDESCS) |
| lemniskata | 7:99e5141a51dc | 724 | idx = 0; |
| lemniskata | 7:99e5141a51dc | 725 | } |
| emilmont | 4:d827a085afd9 | 726 | |
| lemniskata | 7:99e5141a51dc | 727 | LPC_EMAC->TxProduceIndex = idx; |
| emilmont | 4:d827a085afd9 | 728 | |
| lemniskata | 7:99e5141a51dc | 729 | LINK_STATS_INC(link.xmit); |
| emilmont | 4:d827a085afd9 | 730 | |
| emilmont | 4:d827a085afd9 | 731 | #if NO_SYS == 0 |
| lemniskata | 7:99e5141a51dc | 732 | /* Restore access */ |
| lemniskata | 7:99e5141a51dc | 733 | sys_mutex_unlock(&lpc_enetif->TXLockMutex); |
| emilmont | 4:d827a085afd9 | 734 | #endif |
| emilmont | 4:d827a085afd9 | 735 | |
| lemniskata | 7:99e5141a51dc | 736 | return ERR_OK; |
| emilmont | 4:d827a085afd9 | 737 | } |
| emilmont | 4:d827a085afd9 | 738 | |
| emilmont | 4:d827a085afd9 | 739 | /** \brief LPC EMAC interrupt handler. |
| emilmont | 4:d827a085afd9 | 740 | * |
| emilmont | 4:d827a085afd9 | 741 | * This function handles the transmit, receive, and error interrupt of |
| emilmont | 4:d827a085afd9 | 742 | * the LPC177x_8x. This is meant to be used when NO_SYS=0. |
| emilmont | 4:d827a085afd9 | 743 | */ |
| emilmont | 4:d827a085afd9 | 744 | void ENET_IRQHandler(void) |
| emilmont | 4:d827a085afd9 | 745 | { |
| emilmont | 4:d827a085afd9 | 746 | #if NO_SYS == 1 |
| lemniskata | 7:99e5141a51dc | 747 | /* Interrupts are not used without an RTOS */ |
| emilmont | 4:d827a085afd9 | 748 | NVIC_DisableIRQ(ENET_IRQn); |
| emilmont | 4:d827a085afd9 | 749 | #else |
| lemniskata | 7:99e5141a51dc | 750 | uint32_t ints; |
| emilmont | 4:d827a085afd9 | 751 | |
| lemniskata | 7:99e5141a51dc | 752 | /* Interrupts are of 2 groups - transmit or receive. Based on the |
| lemniskata | 7:99e5141a51dc | 753 | interrupt, kick off the receive or transmit (cleanup) task */ |
| emilmont | 4:d827a085afd9 | 754 | |
| lemniskata | 7:99e5141a51dc | 755 | /* Get pending interrupts */ |
| lemniskata | 7:99e5141a51dc | 756 | ints = LPC_EMAC->IntStatus; |
| emilmont | 4:d827a085afd9 | 757 | |
| lemniskata | 7:99e5141a51dc | 758 | if (ints & RXINTGROUP) { |
| emilmont | 4:d827a085afd9 | 759 | /* RX group interrupt(s): Give semaphore to wakeup RX receive task.*/ |
| emilmont | 4:d827a085afd9 | 760 | sys_sem_signal(&lpc_enetdata.RxSem); |
| emilmont | 4:d827a085afd9 | 761 | } |
| emilmont | 4:d827a085afd9 | 762 | |
| emilmont | 4:d827a085afd9 | 763 | if (ints & TXINTGROUP) { |
| emilmont | 4:d827a085afd9 | 764 | /* TX group interrupt(s): Give semaphore to wakeup TX cleanup task. */ |
| emilmont | 4:d827a085afd9 | 765 | sys_sem_signal(&lpc_enetdata.TxCleanSem); |
| emilmont | 4:d827a085afd9 | 766 | } |
| emilmont | 4:d827a085afd9 | 767 | |
| lemniskata | 7:99e5141a51dc | 768 | /* Clear pending interrupts */ |
| lemniskata | 7:99e5141a51dc | 769 | LPC_EMAC->IntClear = ints; |
| emilmont | 4:d827a085afd9 | 770 | #endif |
| emilmont | 4:d827a085afd9 | 771 | } |
| emilmont | 4:d827a085afd9 | 772 | |
| emilmont | 4:d827a085afd9 | 773 | #if NO_SYS == 0 |
| emilmont | 4:d827a085afd9 | 774 | /** \brief Packet reception task |
| emilmont | 4:d827a085afd9 | 775 | * |
| emilmont | 4:d827a085afd9 | 776 | * This task is called when a packet is received. It will |
| emilmont | 4:d827a085afd9 | 777 | * pass the packet to the LWIP core. |
| emilmont | 4:d827a085afd9 | 778 | * |
| emilmont | 4:d827a085afd9 | 779 | * \param[in] pvParameters Not used yet |
| emilmont | 4:d827a085afd9 | 780 | */ |
| emilmont | 4:d827a085afd9 | 781 | static void packet_rx(void* pvParameters) { |
| emilmont | 4:d827a085afd9 | 782 | struct lpc_enetdata *lpc_enetif = pvParameters; |
| emilmont | 4:d827a085afd9 | 783 | |
| emilmont | 4:d827a085afd9 | 784 | while (1) { |
| emilmont | 4:d827a085afd9 | 785 | /* Wait for receive task to wakeup */ |
| emilmont | 4:d827a085afd9 | 786 | sys_arch_sem_wait(&lpc_enetif->RxSem, 0); |
| emilmont | 4:d827a085afd9 | 787 | |
| emilmont | 4:d827a085afd9 | 788 | /* Process packets until all empty */ |
| emilmont | 4:d827a085afd9 | 789 | while (LPC_EMAC->RxConsumeIndex != LPC_EMAC->RxProduceIndex) |
| emilmont | 4:d827a085afd9 | 790 | lpc_enetif_input(lpc_enetif->netif); |
| emilmont | 4:d827a085afd9 | 791 | } |
| emilmont | 4:d827a085afd9 | 792 | } |
| emilmont | 4:d827a085afd9 | 793 | |
| emilmont | 4:d827a085afd9 | 794 | /** \brief Transmit cleanup task |
| emilmont | 4:d827a085afd9 | 795 | * |
| emilmont | 4:d827a085afd9 | 796 | * This task is called when a transmit interrupt occurs and |
| emilmont | 4:d827a085afd9 | 797 | * reclaims the pbuf and descriptor used for the packet once |
| emilmont | 4:d827a085afd9 | 798 | * the packet has been transferred. |
| emilmont | 4:d827a085afd9 | 799 | * |
| emilmont | 4:d827a085afd9 | 800 | * \param[in] pvParameters Not used yet |
| emilmont | 4:d827a085afd9 | 801 | */ |
| emilmont | 4:d827a085afd9 | 802 | static void packet_tx(void* pvParameters) { |
| emilmont | 4:d827a085afd9 | 803 | struct lpc_enetdata *lpc_enetif = pvParameters; |
| emilmont | 4:d827a085afd9 | 804 | s32_t idx; |
| emilmont | 4:d827a085afd9 | 805 | |
| emilmont | 4:d827a085afd9 | 806 | while (1) { |
| emilmont | 4:d827a085afd9 | 807 | /* Wait for transmit cleanup task to wakeup */ |
| emilmont | 4:d827a085afd9 | 808 | sys_arch_sem_wait(&lpc_enetif->TxCleanSem, 0); |
| emilmont | 4:d827a085afd9 | 809 | |
| emilmont | 4:d827a085afd9 | 810 | /* Error handling for TX underruns. This should never happen unless |
| emilmont | 4:d827a085afd9 | 811 | something is holding the bus or the clocks are going too slow. It |
| emilmont | 4:d827a085afd9 | 812 | can probably be safely removed. */ |
| emilmont | 4:d827a085afd9 | 813 | if (LPC_EMAC->IntStatus & EMAC_INT_TX_UNDERRUN) { |
| emilmont | 4:d827a085afd9 | 814 | LINK_STATS_INC(link.err); |
| emilmont | 4:d827a085afd9 | 815 | LINK_STATS_INC(link.drop); |
| emilmont | 4:d827a085afd9 | 816 | |
| emilmont | 4:d827a085afd9 | 817 | #if NO_SYS == 0 |
| emilmont | 4:d827a085afd9 | 818 | /* Get exclusive access */ |
| emilmont | 4:d827a085afd9 | 819 | sys_mutex_lock(&lpc_enetif->TXLockMutex); |
| emilmont | 4:d827a085afd9 | 820 | #endif |
| emilmont | 4:d827a085afd9 | 821 | /* Reset the TX side */ |
| emilmont | 4:d827a085afd9 | 822 | LPC_EMAC->MAC1 |= EMAC_MAC1_RES_TX; |
| emilmont | 4:d827a085afd9 | 823 | LPC_EMAC->IntClear = EMAC_INT_TX_UNDERRUN; |
| emilmont | 4:d827a085afd9 | 824 | |
| emilmont | 4:d827a085afd9 | 825 | /* De-allocate all queued TX pbufs */ |
| emilmont | 6:59b01b9349d5 | 826 | for (idx = 0; idx < LPC_NUM_BUFF_TXDESCS; idx++) { |
| emilmont | 4:d827a085afd9 | 827 | if (lpc_enetif->txb[idx] != NULL) { |
| emilmont | 4:d827a085afd9 | 828 | pbuf_free(lpc_enetif->txb[idx]); |
| emilmont | 4:d827a085afd9 | 829 | lpc_enetif->txb[idx] = NULL; |
| emilmont | 4:d827a085afd9 | 830 | } |
| emilmont | 4:d827a085afd9 | 831 | } |
| emilmont | 4:d827a085afd9 | 832 | |
| emilmont | 4:d827a085afd9 | 833 | #if NO_SYS == 0 |
| emilmont | 4:d827a085afd9 | 834 | /* Restore access */ |
| emilmont | 4:d827a085afd9 | 835 | sys_mutex_unlock(&lpc_enetif->TXLockMutex); |
| emilmont | 4:d827a085afd9 | 836 | #endif |
| emilmont | 4:d827a085afd9 | 837 | /* Start TX side again */ |
| emilmont | 4:d827a085afd9 | 838 | lpc_tx_setup(lpc_enetif); |
| emilmont | 4:d827a085afd9 | 839 | } else { |
| emilmont | 4:d827a085afd9 | 840 | /* Free TX buffers that are done sending */ |
| emilmont | 4:d827a085afd9 | 841 | lpc_tx_reclaim(lpc_enetdata.netif); |
| emilmont | 4:d827a085afd9 | 842 | } |
| emilmont | 4:d827a085afd9 | 843 | } |
| emilmont | 4:d827a085afd9 | 844 | } |
| emilmont | 4:d827a085afd9 | 845 | #endif |
| emilmont | 4:d827a085afd9 | 846 | |
| emilmont | 4:d827a085afd9 | 847 | /** \brief Low level init of the MAC and PHY. |
| emilmont | 4:d827a085afd9 | 848 | * |
| emilmont | 4:d827a085afd9 | 849 | * \param[in] netif Pointer to LWIP netif structure |
| emilmont | 4:d827a085afd9 | 850 | */ |
| emilmont | 4:d827a085afd9 | 851 | static err_t low_level_init(struct netif *netif) |
| emilmont | 4:d827a085afd9 | 852 | { |
| lemniskata | 7:99e5141a51dc | 853 | struct lpc_enetdata *lpc_enetif = netif->state; |
| lemniskata | 7:99e5141a51dc | 854 | err_t err = ERR_OK; |
| emilmont | 4:d827a085afd9 | 855 | |
| lemniskata | 7:99e5141a51dc | 856 | /* Enable MII clocking */ |
| lemniskata | 7:99e5141a51dc | 857 | LPC_SC->PCONP |= CLKPWR_PCONP_PCENET; |
| lemniskata | 7:99e5141a51dc | 858 | |
| emilmont | 5:698d868a5285 | 859 | #if defined(TARGET_LPC1768) |
| lemniskata | 7:99e5141a51dc | 860 | LPC_PINCON->PINSEL2 = 0x50150105; /* Enable P1 Ethernet Pins. */ |
| lemniskata | 7:99e5141a51dc | 861 | LPC_PINCON->PINSEL3 = (LPC_PINCON->PINSEL3 & ~0x0000000F) | 0x00000005; |
| emilmont | 5:698d868a5285 | 862 | #elif defined(TARGET_LPC4088) |
| emilmont | 5:698d868a5285 | 863 | LPC_IOCON->P1_0 &= ~0x07; /* ENET I/O config */ |
| emilmont | 5:698d868a5285 | 864 | LPC_IOCON->P1_0 |= 0x01; /* ENET_TXD0 */ |
| emilmont | 5:698d868a5285 | 865 | LPC_IOCON->P1_1 &= ~0x07; |
| emilmont | 5:698d868a5285 | 866 | LPC_IOCON->P1_1 |= 0x01; /* ENET_TXD1 */ |
| emilmont | 5:698d868a5285 | 867 | LPC_IOCON->P1_4 &= ~0x07; |
| emilmont | 5:698d868a5285 | 868 | LPC_IOCON->P1_4 |= 0x01; /* ENET_TXEN */ |
| emilmont | 5:698d868a5285 | 869 | LPC_IOCON->P1_8 &= ~0x07; |
| emilmont | 5:698d868a5285 | 870 | LPC_IOCON->P1_8 |= 0x01; /* ENET_CRS */ |
| emilmont | 5:698d868a5285 | 871 | LPC_IOCON->P1_9 &= ~0x07; |
| emilmont | 5:698d868a5285 | 872 | LPC_IOCON->P1_9 |= 0x01; /* ENET_RXD0 */ |
| emilmont | 5:698d868a5285 | 873 | LPC_IOCON->P1_10 &= ~0x07; |
| emilmont | 5:698d868a5285 | 874 | LPC_IOCON->P1_10 |= 0x01; /* ENET_RXD1 */ |
| emilmont | 5:698d868a5285 | 875 | LPC_IOCON->P1_14 &= ~0x07; |
| emilmont | 5:698d868a5285 | 876 | LPC_IOCON->P1_14 |= 0x01; /* ENET_RX_ER */ |
| emilmont | 5:698d868a5285 | 877 | LPC_IOCON->P1_15 &= ~0x07; |
| emilmont | 5:698d868a5285 | 878 | LPC_IOCON->P1_15 |= 0x01; /* ENET_REF_CLK */ |
| emilmont | 5:698d868a5285 | 879 | LPC_IOCON->P1_16 &= ~0x07; /* ENET/PHY I/O config */ |
| emilmont | 5:698d868a5285 | 880 | LPC_IOCON->P1_16 |= 0x01; /* ENET_MDC */ |
| emilmont | 5:698d868a5285 | 881 | LPC_IOCON->P1_17 &= ~0x07; |
| emilmont | 5:698d868a5285 | 882 | LPC_IOCON->P1_17 |= 0x01; /* ENET_MDIO */ |
| emilmont | 5:698d868a5285 | 883 | #endif |
| lemniskata | 7:99e5141a51dc | 884 | |
| lemniskata | 7:99e5141a51dc | 885 | /* Reset all MAC logic */ |
| lemniskata | 7:99e5141a51dc | 886 | LPC_EMAC->MAC1 = EMAC_MAC1_RES_TX | EMAC_MAC1_RES_MCS_TX | |
| lemniskata | 7:99e5141a51dc | 887 | EMAC_MAC1_RES_RX | EMAC_MAC1_RES_MCS_RX | EMAC_MAC1_SIM_RES | |
| lemniskata | 7:99e5141a51dc | 888 | EMAC_MAC1_SOFT_RES; |
| lemniskata | 7:99e5141a51dc | 889 | LPC_EMAC->Command = EMAC_CR_REG_RES | EMAC_CR_TX_RES | EMAC_CR_RX_RES | |
| lemniskata | 7:99e5141a51dc | 890 | EMAC_CR_PASS_RUNT_FRM; |
| lemniskata | 7:99e5141a51dc | 891 | osDelay(10); |
| lemniskata | 7:99e5141a51dc | 892 | |
| lemniskata | 7:99e5141a51dc | 893 | /* Initial MAC initialization */ |
| lemniskata | 7:99e5141a51dc | 894 | LPC_EMAC->MAC1 = EMAC_MAC1_PASS_ALL; |
| lemniskata | 7:99e5141a51dc | 895 | LPC_EMAC->MAC2 = EMAC_MAC2_CRC_EN | EMAC_MAC2_PAD_EN | |
| lemniskata | 7:99e5141a51dc | 896 | EMAC_MAC2_VLAN_PAD_EN; |
| lemniskata | 7:99e5141a51dc | 897 | LPC_EMAC->MAXF = EMAC_ETH_MAX_FLEN; |
| emilmont | 4:d827a085afd9 | 898 | |
| lemniskata | 7:99e5141a51dc | 899 | /* Set RMII management clock rate to lowest speed */ |
| lemniskata | 7:99e5141a51dc | 900 | LPC_EMAC->MCFG = EMAC_MCFG_CLK_SEL(11) | EMAC_MCFG_RES_MII; |
| lemniskata | 7:99e5141a51dc | 901 | LPC_EMAC->MCFG &= ~EMAC_MCFG_RES_MII; |
| emilmont | 4:d827a085afd9 | 902 | |
| lemniskata | 7:99e5141a51dc | 903 | /* Maximum number of retries, 0x37 collision window, gap */ |
| lemniskata | 7:99e5141a51dc | 904 | LPC_EMAC->CLRT = EMAC_CLRT_DEF; |
| lemniskata | 7:99e5141a51dc | 905 | LPC_EMAC->IPGR = EMAC_IPGR_P1_DEF | EMAC_IPGR_P2_DEF; |
| emilmont | 4:d827a085afd9 | 906 | |
| emilmont | 4:d827a085afd9 | 907 | #if LPC_EMAC_RMII |
| lemniskata | 7:99e5141a51dc | 908 | /* RMII setup */ |
| lemniskata | 7:99e5141a51dc | 909 | LPC_EMAC->Command = EMAC_CR_PASS_RUNT_FRM | EMAC_CR_RMII; |
| emilmont | 4:d827a085afd9 | 910 | #else |
| lemniskata | 7:99e5141a51dc | 911 | /* MII setup */ |
| lemniskata | 7:99e5141a51dc | 912 | LPC_EMAC->CR = EMAC_CR_PASS_RUNT_FRM; |
| emilmont | 4:d827a085afd9 | 913 | #endif |
| emilmont | 4:d827a085afd9 | 914 | |
| lemniskata | 7:99e5141a51dc | 915 | /* Initialize the PHY and reset */ |
| emilmont | 4:d827a085afd9 | 916 | err = lpc_phy_init(netif, LPC_EMAC_RMII); |
| lemniskata | 7:99e5141a51dc | 917 | if (err != ERR_OK) |
| lemniskata | 7:99e5141a51dc | 918 | return err; |
| emilmont | 4:d827a085afd9 | 919 | |
| lemniskata | 7:99e5141a51dc | 920 | /* Save station address */ |
| lemniskata | 7:99e5141a51dc | 921 | LPC_EMAC->SA2 = (u32_t) netif->hwaddr[0] | |
| lemniskata | 7:99e5141a51dc | 922 | (((u32_t) netif->hwaddr[1]) << 8); |
| lemniskata | 7:99e5141a51dc | 923 | LPC_EMAC->SA1 = (u32_t) netif->hwaddr[2] | |
| lemniskata | 7:99e5141a51dc | 924 | (((u32_t) netif->hwaddr[3]) << 8); |
| lemniskata | 7:99e5141a51dc | 925 | LPC_EMAC->SA0 = (u32_t) netif->hwaddr[4] | |
| lemniskata | 7:99e5141a51dc | 926 | (((u32_t) netif->hwaddr[5]) << 8); |
| emilmont | 4:d827a085afd9 | 927 | |
| lemniskata | 7:99e5141a51dc | 928 | /* Setup transmit and receive descriptors */ |
| lemniskata | 7:99e5141a51dc | 929 | if (lpc_tx_setup(lpc_enetif) != ERR_OK) |
| lemniskata | 7:99e5141a51dc | 930 | return ERR_BUF; |
| lemniskata | 7:99e5141a51dc | 931 | if (lpc_rx_setup(lpc_enetif) != ERR_OK) |
| lemniskata | 7:99e5141a51dc | 932 | return ERR_BUF; |
| emilmont | 4:d827a085afd9 | 933 | |
| lemniskata | 7:99e5141a51dc | 934 | /* Enable packet reception */ |
| emilmont | 4:d827a085afd9 | 935 | #if IP_SOF_BROADCAST_RECV |
| lemniskata | 7:99e5141a51dc | 936 | LPC_EMAC->RxFilterCtrl = EMAC_RFC_PERFECT_EN | EMAC_RFC_BCAST_EN | EMAC_RFC_MCAST_EN; |
| emilmont | 4:d827a085afd9 | 937 | #else |
| lemniskata | 7:99e5141a51dc | 938 | LPC_EMAC->RxFilterCtrl = EMAC_RFC_PERFECT_EN; |
| emilmont | 4:d827a085afd9 | 939 | #endif |
| emilmont | 4:d827a085afd9 | 940 | |
| lemniskata | 7:99e5141a51dc | 941 | /* Clear and enable rx/tx interrupts */ |
| lemniskata | 7:99e5141a51dc | 942 | LPC_EMAC->IntClear = 0xFFFF; |
| lemniskata | 7:99e5141a51dc | 943 | LPC_EMAC->IntEnable = RXINTGROUP | TXINTGROUP; |
| emilmont | 4:d827a085afd9 | 944 | |
| lemniskata | 7:99e5141a51dc | 945 | /* Enable RX and TX */ |
| lemniskata | 7:99e5141a51dc | 946 | LPC_EMAC->Command |= EMAC_CR_RX_EN | EMAC_CR_TX_EN; |
| lemniskata | 7:99e5141a51dc | 947 | LPC_EMAC->MAC1 |= EMAC_MAC1_REC_EN; |
| emilmont | 4:d827a085afd9 | 948 | |
| lemniskata | 7:99e5141a51dc | 949 | return err; |
| emilmont | 4:d827a085afd9 | 950 | } |
| emilmont | 4:d827a085afd9 | 951 | |
| emilmont | 4:d827a085afd9 | 952 | /* This function provides a method for the PHY to setup the EMAC |
| emilmont | 4:d827a085afd9 | 953 | for the PHY negotiated duplex mode */ |
| emilmont | 4:d827a085afd9 | 954 | void lpc_emac_set_duplex(int full_duplex) |
| emilmont | 4:d827a085afd9 | 955 | { |
| lemniskata | 7:99e5141a51dc | 956 | if (full_duplex) { |
| lemniskata | 7:99e5141a51dc | 957 | LPC_EMAC->MAC2 |= EMAC_MAC2_FULL_DUP; |
| lemniskata | 7:99e5141a51dc | 958 | LPC_EMAC->Command |= EMAC_CR_FULL_DUP; |
| lemniskata | 7:99e5141a51dc | 959 | LPC_EMAC->IPGT = EMAC_IPGT_FULL_DUP; |
| lemniskata | 7:99e5141a51dc | 960 | } else { |
| lemniskata | 7:99e5141a51dc | 961 | LPC_EMAC->MAC2 &= ~EMAC_MAC2_FULL_DUP; |
| lemniskata | 7:99e5141a51dc | 962 | LPC_EMAC->Command &= ~EMAC_CR_FULL_DUP; |
| lemniskata | 7:99e5141a51dc | 963 | LPC_EMAC->IPGT = EMAC_IPGT_HALF_DUP; |
| lemniskata | 7:99e5141a51dc | 964 | } |
| emilmont | 4:d827a085afd9 | 965 | } |
| emilmont | 4:d827a085afd9 | 966 | |
| emilmont | 4:d827a085afd9 | 967 | /* This function provides a method for the PHY to setup the EMAC |
| emilmont | 4:d827a085afd9 | 968 | for the PHY negotiated bit rate */ |
| emilmont | 4:d827a085afd9 | 969 | void lpc_emac_set_speed(int mbs_100) |
| emilmont | 4:d827a085afd9 | 970 | { |
| lemniskata | 7:99e5141a51dc | 971 | if (mbs_100) |
| lemniskata | 7:99e5141a51dc | 972 | LPC_EMAC->SUPP = EMAC_SUPP_SPEED; |
| lemniskata | 7:99e5141a51dc | 973 | else |
| lemniskata | 7:99e5141a51dc | 974 | LPC_EMAC->SUPP = 0; |
| emilmont | 4:d827a085afd9 | 975 | } |
| emilmont | 4:d827a085afd9 | 976 | |
| emilmont | 4:d827a085afd9 | 977 | /** |
| emilmont | 4:d827a085afd9 | 978 | * This function is the ethernet packet send function. It calls |
| emilmont | 4:d827a085afd9 | 979 | * etharp_output after checking link status. |
| emilmont | 4:d827a085afd9 | 980 | * |
| emilmont | 4:d827a085afd9 | 981 | * \param[in] netif the lwip network interface structure for this lpc_enetif |
| emilmont | 4:d827a085afd9 | 982 | * \param[in] q Pointer to pbug to send |
| emilmont | 4:d827a085afd9 | 983 | * \param[in] ipaddr IP address |
| emilmont | 4:d827a085afd9 | 984 | * \return ERR_OK or error code |
| emilmont | 4:d827a085afd9 | 985 | */ |
| emilmont | 4:d827a085afd9 | 986 | err_t lpc_etharp_output(struct netif *netif, struct pbuf *q, |
| lemniskata | 7:99e5141a51dc | 987 | ip_addr_t *ipaddr) |
| emilmont | 4:d827a085afd9 | 988 | { |
| lemniskata | 7:99e5141a51dc | 989 | /* Only send packet is link is up */ |
| lemniskata | 7:99e5141a51dc | 990 | if (netif->flags & NETIF_FLAG_LINK_UP) |
| lemniskata | 7:99e5141a51dc | 991 | return etharp_output(netif, q, ipaddr); |
| emilmont | 4:d827a085afd9 | 992 | |
| lemniskata | 7:99e5141a51dc | 993 | return ERR_CONN; |
| emilmont | 4:d827a085afd9 | 994 | } |
| emilmont | 4:d827a085afd9 | 995 | |
| emilmont | 4:d827a085afd9 | 996 | #if NO_SYS == 0 |
| emilmont | 4:d827a085afd9 | 997 | /* periodic PHY status update */ |
| emilmont | 4:d827a085afd9 | 998 | void phy_update(void const *nif) { |
| emilmont | 4:d827a085afd9 | 999 | lpc_phy_sts_sm((struct netif*)nif); |
| emilmont | 4:d827a085afd9 | 1000 | } |
| emilmont | 4:d827a085afd9 | 1001 | osTimerDef(phy_update, phy_update); |
| emilmont | 4:d827a085afd9 | 1002 | #endif |
| emilmont | 4:d827a085afd9 | 1003 | |
| emilmont | 4:d827a085afd9 | 1004 | /** |
| emilmont | 4:d827a085afd9 | 1005 | * Should be called at the beginning of the program to set up the |
| emilmont | 4:d827a085afd9 | 1006 | * network interface. |
| emilmont | 4:d827a085afd9 | 1007 | * |
| emilmont | 4:d827a085afd9 | 1008 | * This function should be passed as a parameter to netif_add(). |
| emilmont | 4:d827a085afd9 | 1009 | * |
| emilmont | 4:d827a085afd9 | 1010 | * @param[in] netif the lwip network interface structure for this lpc_enetif |
| emilmont | 4:d827a085afd9 | 1011 | * @return ERR_OK if the loopif is initialized |
| emilmont | 4:d827a085afd9 | 1012 | * ERR_MEM if private data couldn't be allocated |
| emilmont | 4:d827a085afd9 | 1013 | * any other err_t on error |
| emilmont | 4:d827a085afd9 | 1014 | */ |
| emilmont | 4:d827a085afd9 | 1015 | err_t lpc_enetif_init(struct netif *netif) |
| emilmont | 4:d827a085afd9 | 1016 | { |
| lemniskata | 7:99e5141a51dc | 1017 | err_t err; |
| emilmont | 4:d827a085afd9 | 1018 | |
| lemniskata | 7:99e5141a51dc | 1019 | LWIP_ASSERT("netif != NULL", (netif != NULL)); |
| emilmont | 4:d827a085afd9 | 1020 | |
| lemniskata | 7:99e5141a51dc | 1021 | lpc_enetdata.netif = netif; |
| emilmont | 4:d827a085afd9 | 1022 | |
| lemniskata | 7:99e5141a51dc | 1023 | /* set MAC hardware address */ |
| lemniskata | 7:99e5141a51dc | 1024 | mbed_mac_address((char *)netif->hwaddr); |
| lemniskata | 7:99e5141a51dc | 1025 | netif->hwaddr_len = ETHARP_HWADDR_LEN; |
| emilmont | 4:d827a085afd9 | 1026 | |
| lemniskata | 7:99e5141a51dc | 1027 | /* maximum transfer unit */ |
| lemniskata | 7:99e5141a51dc | 1028 | netif->mtu = 1500; |
| emilmont | 4:d827a085afd9 | 1029 | |
| lemniskata | 7:99e5141a51dc | 1030 | /* device capabilities */ |
| lemniskata | 7:99e5141a51dc | 1031 | netif->flags = NETIF_FLAG_BROADCAST | NETIF_FLAG_ETHARP | NETIF_FLAG_ETHERNET | NETIF_FLAG_IGMP; |
| emilmont | 4:d827a085afd9 | 1032 | |
| lemniskata | 7:99e5141a51dc | 1033 | /* Initialize the hardware */ |
| lemniskata | 7:99e5141a51dc | 1034 | netif->state = &lpc_enetdata; |
| lemniskata | 7:99e5141a51dc | 1035 | err = low_level_init(netif); |
| lemniskata | 7:99e5141a51dc | 1036 | if (err != ERR_OK) |
| lemniskata | 7:99e5141a51dc | 1037 | return err; |
| emilmont | 4:d827a085afd9 | 1038 | |
| emilmont | 4:d827a085afd9 | 1039 | #if LWIP_NETIF_HOSTNAME |
| lemniskata | 7:99e5141a51dc | 1040 | /* Initialize interface hostname */ |
| lemniskata | 7:99e5141a51dc | 1041 | netif->hostname = "lwiplpc"; |
| emilmont | 4:d827a085afd9 | 1042 | #endif /* LWIP_NETIF_HOSTNAME */ |
| emilmont | 4:d827a085afd9 | 1043 | |
| lemniskata | 7:99e5141a51dc | 1044 | netif->name[0] = 'e'; |
| lemniskata | 7:99e5141a51dc | 1045 | netif->name[1] = 'n'; |
| emilmont | 4:d827a085afd9 | 1046 | |
| lemniskata | 7:99e5141a51dc | 1047 | netif->output = lpc_etharp_output; |
| lemniskata | 7:99e5141a51dc | 1048 | netif->linkoutput = lpc_low_level_output; |
| emilmont | 4:d827a085afd9 | 1049 | |
| emilmont | 4:d827a085afd9 | 1050 | /* CMSIS-RTOS, start tasks */ |
| emilmont | 4:d827a085afd9 | 1051 | #if NO_SYS == 0 |
| emilmont | 4:d827a085afd9 | 1052 | #ifdef CMSIS_OS_RTX |
| emilmont | 4:d827a085afd9 | 1053 | memset(lpc_enetdata.xTXDCountSem.data, 0, sizeof(lpc_enetdata.xTXDCountSem.data)); |
| emilmont | 4:d827a085afd9 | 1054 | lpc_enetdata.xTXDCountSem.def.semaphore = lpc_enetdata.xTXDCountSem.data; |
| emilmont | 4:d827a085afd9 | 1055 | #endif |
| emilmont | 4:d827a085afd9 | 1056 | lpc_enetdata.xTXDCountSem.id = osSemaphoreCreate(&lpc_enetdata.xTXDCountSem.def, LPC_NUM_BUFF_TXDESCS); |
| lemniskata | 7:99e5141a51dc | 1057 | LWIP_ASSERT("xTXDCountSem creation error", (lpc_enetdata.xTXDCountSem.id != NULL)); |
| emilmont | 4:d827a085afd9 | 1058 | |
| lemniskata | 7:99e5141a51dc | 1059 | err = sys_mutex_new(&lpc_enetdata.TXLockMutex); |
| lemniskata | 7:99e5141a51dc | 1060 | LWIP_ASSERT("TXLockMutex creation error", (err == ERR_OK)); |
| emilmont | 4:d827a085afd9 | 1061 | |
| lemniskata | 7:99e5141a51dc | 1062 | /* Packet receive task */ |
| lemniskata | 7:99e5141a51dc | 1063 | err = sys_sem_new(&lpc_enetdata.RxSem, 0); |
| lemniskata | 7:99e5141a51dc | 1064 | LWIP_ASSERT("RxSem creation error", (err == ERR_OK)); |
| lemniskata | 7:99e5141a51dc | 1065 | sys_thread_new("receive_thread", packet_rx, netif->state, DEFAULT_THREAD_STACKSIZE, RX_PRIORITY); |
| emilmont | 4:d827a085afd9 | 1066 | |
| lemniskata | 7:99e5141a51dc | 1067 | /* Transmit cleanup task */ |
| lemniskata | 7:99e5141a51dc | 1068 | err = sys_sem_new(&lpc_enetdata.TxCleanSem, 0); |
| lemniskata | 7:99e5141a51dc | 1069 | LWIP_ASSERT("TxCleanSem creation error", (err == ERR_OK)); |
| lemniskata | 7:99e5141a51dc | 1070 | sys_thread_new("txclean_thread", packet_tx, netif->state, DEFAULT_THREAD_STACKSIZE, TX_PRIORITY); |
| lemniskata | 7:99e5141a51dc | 1071 | |
| lemniskata | 7:99e5141a51dc | 1072 | /* periodic PHY status update */ |
| lemniskata | 7:99e5141a51dc | 1073 | osTimerId phy_timer = osTimerCreate(osTimer(phy_update), osTimerPeriodic, (void *)netif); |
| lemniskata | 7:99e5141a51dc | 1074 | osTimerStart(phy_timer, 250); |
| emilmont | 4:d827a085afd9 | 1075 | #endif |
| emilmont | 4:d827a085afd9 | 1076 | |
| emilmont | 4:d827a085afd9 | 1077 | return ERR_OK; |
| emilmont | 4:d827a085afd9 | 1078 | } |
| emilmont | 4:d827a085afd9 | 1079 | |
| emilmont | 4:d827a085afd9 | 1080 | /** |
| emilmont | 4:d827a085afd9 | 1081 | * @} |
| emilmont | 4:d827a085afd9 | 1082 | */ |
| emilmont | 4:d827a085afd9 | 1083 | |
| emilmont | 4:d827a085afd9 | 1084 | /* --------------------------------- End Of File ------------------------------ */ |