Doug Anson
patched lwip-eth with https://github.com/mbedmicro/mbed/commit/8222bde1af2e328e4c58d0f438827f3091e5e0eb
Fork of
lwip-eth
by 
mbed official
Diff: arch/lpc17_emac.c
- Revision:
- 1:0c9d93e2f51c
- Parent:
- 0:f4db29eb9e47
- Child:
- 2:5208926bd863
diff -r f4db29eb9e47 -r 0c9d93e2f51c arch/lpc17_emac.c
--- a/arch/lpc17_emac.c Fri Jun 22 09:32:29 2012 +0000
+++ b/arch/lpc17_emac.c Fri Jun 22 11:17:21 2012 +0000
@@ -1,44 +1,47 @@
-/**********************************************************************
-* $Id$ lpc17_emac.c 2011-11-20
-*//**
-* @file lpc17_emac.c
-* @brief LPC17 ethernet driver for LWIP
-* @version 1.0
-* @date 20. Nov. 2011
-* @author NXP MCU SW Application Team
-*
-* Copyright(C) 2011, NXP Semiconductor
-* All rights reserved.
-*
-***********************************************************************
-* Software that is described herein is for illustrative purposes only
-* which provides customers with programming information regarding the
-* products. This software is supplied "AS IS" without any warranties.
-* NXP Semiconductors assumes no responsibility or liability for the
-* use of the software, conveys no license or title under any patent,
-* copyright, or mask work right to the product. NXP Semiconductors
-* reserves the right to make changes in the software without
-* notification. NXP Semiconductors also make no representation or
-* warranty that such application will be suitable for the specified
-* use without further testing or modification.
+/**********************************************************************
+* $Id$ lpc17_emac.c 2011-11-20
+*//**
+* @file lpc17_emac.c
+* @brief LPC17 ethernet driver for LWIP
+* @version 1.0
+* @date 20. Nov. 2011
+* @author NXP MCU SW Application Team
+*
+* Copyright(C) 2011, NXP Semiconductor
+* All rights reserved.
+*
+***********************************************************************
+* Software that is described herein is for illustrative purposes only
+* which provides customers with programming information regarding the
+* products. This software is supplied "AS IS" without any warranties.
+* NXP Semiconductors assumes no responsibility or liability for the
+* use of the software, conveys no license or title under any patent,
+* copyright, or mask work right to the product. NXP Semiconductors
+* reserves the right to make changes in the software without
+* notification. NXP Semiconductors also make no representation or
+* warranty that such application will be suitable for the specified
+* use without further testing or modification.
**********************************************************************/
-#include "lwip/opt.h"
-#include "lwip/sys.h"
-#include "lwip/def.h"
-#include "lwip/mem.h"
-#include "lwip/pbuf.h"
-#include "lwip/stats.h"
-#include "lwip/snmp.h"
-#include "netif/etharp.h"
+#include "lwip/opt.h"
+#include "lwip/sys.h"
+#include "lwip/def.h"
+#include "lwip/mem.h"
+#include "lwip/pbuf.h"
+#include "lwip/stats.h"
+#include "lwip/snmp.h"
+#include "netif/etharp.h"
#include "netif/ppp_oe.h"
-#include "lpc177x_8x_emac.h"
-#include "lpc177x_8x_clkpwr.h"
+#include "lpc17xx_emac.h"
#include "lpc17_emac.h"
#include "lpc_emac_config.h"
#include "lpc_phy.h"
-
+#include "sys_arch.h"
+
+#include "mbed_interface.h"
+#include <string.h>
+
#ifndef LPC_EMAC_RMII
#error LPC_EMAC_RMII is not defined!
#endif
@@ -50,92 +53,92 @@
#if LPC_NUM_BUFF_RXDESCS < 3
#error LPC_NUM_BUFF_RXDESCS must be at least 3
#endif
-
-/** @defgroup lwip17xx_emac_DRIVER lpc17 EMAC driver for LWIP
- * @ingroup lwip_emac
- *
- * @{
+
+/** @defgroup lwip17xx_emac_DRIVER lpc17 EMAC driver for LWIP
+ * @ingroup lwip_emac
+ *
+ * @{
*/
-
-#if NO_SYS == 0
-/** \brief Driver transmit and receive thread priorities
- *
+
+#if NO_SYS == 0
+/** \brief Driver transmit and receive thread priorities
+ *
* Thread priorities for receive thread and TX cleanup thread. Alter
* to prioritize receive or transmit bandwidth. In a heavily loaded
* system or with LEIP_DEBUG enabled, the priorities might be better
* the same. */
-#define tskRECPKT_PRIORITY (DEFAULT_THREAD_PRIO + 4)
-#define tskTXCLEAN_PRIORITY (DEFAULT_THREAD_PRIO + 5)
-
-/** \brief Debug output formatter lock define
- *
+#define RX_PRIORITY (osPriorityNormal)
+#define TX_PRIORITY (osPriorityNormal)
+
+/** \brief Debug output formatter lock define
+ *
* When using FreeRTOS and with LWIP_DEBUG enabled, enabling this
* define will allow RX debug messages to not interleave with the
- * TX messages (so they are actually readable). Not enabling this
- * define when the system is under load will cause the output to
- * be unreadable. There is a small tradeoff in performance for this
+ * TX messages (so they are actually readable). Not enabling this
+ * define when the system is under load will cause the output to
+ * be unreadable. There is a small tradeoff in performance for this
* so use it only for debug. */
//#define LOCK_RX_THREAD
-
-/** \brief Receive group interrupts
- */
-#define RXINTGROUP (EMAC_INT_RX_OVERRUN | EMAC_INT_RX_ERR | EMAC_INT_RX_DONE)
-
-/** \brief Transmit group interrupts
- */
-#define TXINTGROUP (EMAC_INT_TX_UNDERRUN | EMAC_INT_TX_ERR | EMAC_INT_TX_DONE)
-#else
-#define RXINTGROUP 0
-#define TXINTGROUP 0
-#endif
-
- /** \brief Structure of a TX/RX descriptor
- */
-typedef struct
-{
- volatile u32_t packet; /**< Pointer to buffer */
- volatile u32_t control; /**< Control word */
-} LPC_TXRX_DESC_T;
-
-/** \brief Structure of a RX status entry
- */
-typedef struct
-{
- volatile u32_t statusinfo; /**< RX status word */
- volatile u32_t statushashcrc; /**< RX hash CRC */
+
+/** \brief Receive group interrupts
+ */
+#define RXINTGROUP (EMAC_INT_RX_OVERRUN | EMAC_INT_RX_ERR | EMAC_INT_RX_DONE)
+
+/** \brief Transmit group interrupts
+ */
+#define TXINTGROUP (EMAC_INT_TX_UNDERRUN | EMAC_INT_TX_ERR | EMAC_INT_TX_DONE)
+#else
+#define RXINTGROUP 0
+#define TXINTGROUP 0
+#endif
+
+ /** \brief Structure of a TX/RX descriptor
+ */
+typedef struct
+{
+ volatile u32_t packet; /**< Pointer to buffer */
+ volatile u32_t control; /**< Control word */
+} LPC_TXRX_DESC_T;
+
+/** \brief Structure of a RX status entry
+ */
+typedef struct
+{
+ volatile u32_t statusinfo; /**< RX status word */
+ volatile u32_t statushashcrc; /**< RX hash CRC */
} LPC_TXRX_STATUS_T;
-
-/* LPC EMAC driver data structure */
-struct lpc_enetdata {
- /* prxs must be 8 byte aligned! */
- LPC_TXRX_STATUS_T prxs[LPC_NUM_BUFF_RXDESCS]; /**< Pointer to RX statuses */
- struct netif *netif; /**< Reference back to LWIP parent netif */
- LPC_TXRX_DESC_T ptxd[LPC_NUM_BUFF_TXDESCS]; /**< Pointer to TX descriptor list */
- LPC_TXRX_STATUS_T ptxs[LPC_NUM_BUFF_TXDESCS]; /**< Pointer to TX statuses */
- LPC_TXRX_DESC_T prxd[LPC_NUM_BUFF_RXDESCS]; /**< Pointer to RX descriptor list */
- struct pbuf *rxb[LPC_NUM_BUFF_RXDESCS]; /**< RX pbuf pointer list, zero-copy mode */
- u32_t rx_fill_desc_index; /**< RX descriptor next available index */
- volatile u32_t rx_free_descs; /**< Count of free RX descriptors */
- struct pbuf *txb[LPC_NUM_BUFF_TXDESCS]; /**< TX pbuf pointer list, zero-copy mode */
- u32_t lpc_last_tx_idx; /**< TX last descriptor index, zero-copy mode */
-#if NO_SYS == 0
+
+/* LPC EMAC driver data structure */
+struct lpc_enetdata {
+ /* prxs must be 8 byte aligned! */
+ LPC_TXRX_STATUS_T prxs[LPC_NUM_BUFF_RXDESCS]; /**< Pointer to RX statuses */
+ struct netif *netif; /**< Reference back to LWIP parent netif */
+ LPC_TXRX_DESC_T ptxd[LPC_NUM_BUFF_TXDESCS]; /**< Pointer to TX descriptor list */
+ LPC_TXRX_STATUS_T ptxs[LPC_NUM_BUFF_TXDESCS]; /**< Pointer to TX statuses */
+ LPC_TXRX_DESC_T prxd[LPC_NUM_BUFF_RXDESCS]; /**< Pointer to RX descriptor list */
+ struct pbuf *rxb[LPC_NUM_BUFF_RXDESCS]; /**< RX pbuf pointer list, zero-copy mode */
+ u32_t rx_fill_desc_index; /**< RX descriptor next available index */
+ volatile u32_t rx_free_descs; /**< Count of free RX descriptors */
+ struct pbuf *txb[LPC_NUM_BUFF_TXDESCS]; /**< TX pbuf pointer list, zero-copy mode */
+ u32_t lpc_last_tx_idx; /**< TX last descriptor index, zero-copy mode */
+#if NO_SYS == 0
sys_sem_t RxSem; /**< RX receive thread wakeup semaphore */
sys_sem_t TxCleanSem; /**< TX cleanup thread wakeup semaphore */
sys_mutex_t TXLockMutex; /**< TX critical section mutex */
- xSemaphoreHandle xTXDCountSem; /**< TX free buffer counting semaphore */
-#endif
-};
-
-/** \brief LPC EMAC driver work data
- */
+ sys_sem_t xTXDCountSem; /**< TX free buffer counting semaphore */
+#endif
+};
+
+/** \brief LPC EMAC driver work data
+ */
ALIGNED(8) struct lpc_enetdata lpc_enetdata;
-
+
/* Write a value via the MII link (non-blocking) */
void lpc_mii_write_noblock(u32_t PhyReg, u32_t Value)
{
/* Write value at PHY address and register */
- LPC_EMAC->MADR = (LPC_PHYDEF_PHYADDR << 8) | PhyReg;
- LPC_EMAC->MWTD = Value;
+ LPC_EMAC->MADR = (LPC_PHYDEF_PHYADDR << 8) | PhyReg;
+ LPC_EMAC->MWTD = Value;
}
/* Write a value via the MII link (blocking) */
@@ -145,16 +148,16 @@
err_t sts = ERR_OK;
/* Write value at PHY address and register */
- lpc_mii_write_noblock(PhyReg, Value);
-
+ lpc_mii_write_noblock(PhyReg, Value);
+
/* Wait for unbusy status */
while (mst > 0) {
sts = LPC_EMAC->MIND;
- if ((sts & EMAC_MIND_BUSY) == 0)
+ if ((sts & EMAC_MIND_BUSY) == 0)
mst = 0;
else {
mst--;
- msDelay(1);
+ osDelay(1);
}
}
@@ -175,7 +178,7 @@
{
u32_t data = LPC_EMAC->MRDD;
LPC_EMAC->MCMD = 0;
-
+
return data;
}
@@ -183,8 +186,8 @@
void lpc_mii_read_noblock(u32_t PhyReg)
{
/* Read value at PHY address and register */
- LPC_EMAC->MADR = (LPC_PHYDEF_PHYADDR << 8) | PhyReg;
- LPC_EMAC->MCMD = EMAC_MCMD_READ;
+ LPC_EMAC->MADR = (LPC_PHYDEF_PHYADDR << 8) | PhyReg;
+ LPC_EMAC->MCMD = EMAC_MCMD_READ;
}
/* Read a value via the MII link (blocking) */
@@ -199,17 +202,17 @@
/* Wait for unbusy status */
while (mst > 0) {
sts = LPC_EMAC->MIND & ~EMAC_MIND_MII_LINK_FAIL;
- if ((sts & EMAC_MIND_BUSY) == 0) {
+ if ((sts & EMAC_MIND_BUSY) == 0) {
mst = 0;
*data = LPC_EMAC->MRDD;
} else {
mst--;
- msDelay(1);
+ osDelay(1);
}
}
LPC_EMAC->MCMD = 0;
-
+
if (sts != 0)
sts = ERR_TIMEOUT;
@@ -218,10 +221,10 @@
/** \brief Queues a pbuf into the RX descriptor list
*
- * \param[in] lpc_enetif Pointer to the drvier data structure
- * \param[in] p Pointer to pbuf to queue
+ * \param[in] lpc_enetif Pointer to the drvier data structure
+ * \param[in] p Pointer to pbuf to queue
*/
-static void lpc_rxqueue_pbuf(struct lpc_enetdata *lpc_enetif, struct pbuf *p)
+static void lpc_rxqueue_pbuf(struct lpc_enetdata *lpc_enetif, struct pbuf *p)
{
u32_t idx;
@@ -254,8 +257,8 @@
/** \brief Attempt to allocate and requeue a new pbuf for RX
*
- * \param[in] netif Pointer to the netif structure
- * \returns 1 if a packet was allocated and requeued, otherwise 0
+ * \param[in] netif Pointer to the netif structure
+ * \returns 1 if a packet was allocated and requeued, otherwise 0
*/
s32_t lpc_rx_queue(struct netif *netif)
{
@@ -279,7 +282,7 @@
/* pbufs allocated from the RAM pool should be non-chained. */
LWIP_ASSERT("lpc_rx_queue: pbuf is not contiguous (chained)",
pbuf_clen(p) <= 1);
-
+
/* Queue packet */
lpc_rxqueue_pbuf(lpc_enetif, p);
@@ -299,8 +302,6 @@
*/
static err_t lpc_rx_setup(struct lpc_enetdata *lpc_enetif)
{
- s32_t idx;
-
/* Setup pointers to RX structures */
LPC_EMAC->RxDescriptor = (u32_t) &lpc_enetif->prxd[0];
LPC_EMAC->RxStatus = (u32_t) &lpc_enetif->prxs[0];
@@ -317,31 +318,30 @@
/** \brief Allocates a pbuf and returns the data from the incoming packet.
*
- * \param[in] netif the lwip network interface structure for this lpc_enetif
- * \return a pbuf filled with the received packet (including MAC header)
- * NULL on memory error
+ * \param[in] netif the lwip network interface structure for this lpc_enetif
+ * \return a pbuf filled with the received packet (including MAC header)
+ * NULL on memory error
*/
-static struct pbuf *lpc_low_level_input(struct netif *netif)
-{
- struct lpc_enetdata *lpc_enetif = netif->state;
- struct pbuf *p = NULL, *q;
+static struct pbuf *lpc_low_level_input(struct netif *netif)
+{
+ struct lpc_enetdata *lpc_enetif = netif->state;
+ struct pbuf *p = NULL;
u32_t idx, length;
- u8_t *src;
-
+
#ifdef LOCK_RX_THREAD
#if NO_SYS == 0
/* Get exclusive access */
sys_mutex_lock(&lpc_enetif->TXLockMutex);
#endif
#endif
-
+
/* Monitor RX overrun status. This should never happen unless
(possibly) the internal bus is behing held up by something.
Unless your system is running at a very low clock speed or
there are possibilities that the internal buses may be held
up for a long time, this can probably safely be removed. */
if (LPC_EMAC->IntStatus & EMAC_INT_RX_OVERRUN) {
- LINK_STATS_INC(link.err);
+ LINK_STATS_INC(link.err);
LINK_STATS_INC(link.drop);
/* Temporarily disable RX */
@@ -379,9 +379,9 @@
idx = LPC_EMAC->RxConsumeIndex;
if (LPC_EMAC->RxProduceIndex != idx) {
/* Handle errors */
- if (lpc_enetif->prxs[idx].statusinfo & (EMAC_RINFO_CRC_ERR |
+ if (lpc_enetif->prxs[idx].statusinfo & (EMAC_RINFO_CRC_ERR |
EMAC_RINFO_SYM_ERR | EMAC_RINFO_ALIGN_ERR | EMAC_RINFO_LEN_ERR)) {
-#if LINK_STATS
+#if LINK_STATS
if (lpc_enetif->prxs[idx].statusinfo & (EMAC_RINFO_CRC_ERR |
EMAC_RINFO_SYM_ERR | EMAC_RINFO_ALIGN_ERR))
LINK_STATS_INC(link.chkerr);
@@ -399,7 +399,7 @@
lpc_rxqueue_pbuf(lpc_enetif, p);
LWIP_DEBUGF(UDP_LPC_EMAC | LWIP_DBG_TRACE,
- ("lpc_low_level_input: Packet dropped with errors (0x%x)\n",
+ ("lpc_low_level_input: Packet dropped with errors (0x%x)\n",
lpc_enetif->prxs[idx].statusinfo));
} else {
/* A packet is waiting, get length */
@@ -432,53 +432,53 @@
#endif
#endif
- return p;
+ return p;
}
/** \brief Attempt to read a packet from the EMAC interface.
*
- * \param[in] netif the lwip network interface structure for this lpc_enetif
+ * \param[in] netif the lwip network interface structure for this lpc_enetif
*/
-void lpc_enetif_input(struct netif *netif)
-{
- struct eth_hdr *ethhdr;
+void lpc_enetif_input(struct netif *netif)
+{
+ struct eth_hdr *ethhdr;
struct pbuf *p;
-
- /* move received packet into a new pbuf */
+
+ /* move received packet into a new pbuf */
p = lpc_low_level_input(netif);
if (p == NULL)
return;
-
- /* points to packet payload, which starts with an Ethernet header */
+
+ /* points to packet payload, which starts with an Ethernet header */
ethhdr = p->payload;
-
- switch (htons(ethhdr->type)) {
- case ETHTYPE_IP:
- case ETHTYPE_ARP:
-#if PPPOE_SUPPORT
- case ETHTYPE_PPPOEDISC:
- case ETHTYPE_PPPOE:
-#endif /* PPPOE_SUPPORT */
- /* full packet send to tcpip_thread to process */
- if (netif->input(p, netif) != ERR_OK) {
- LWIP_DEBUGF(NETIF_DEBUG, ("lpc_enetif_input: IP input error\n"));
+
+ switch (htons(ethhdr->type)) {
+ case ETHTYPE_IP:
+ case ETHTYPE_ARP:
+#if PPPOE_SUPPORT
+ case ETHTYPE_PPPOEDISC:
+ case ETHTYPE_PPPOE:
+#endif /* PPPOE_SUPPORT */
+ /* full packet send to tcpip_thread to process */
+ if (netif->input(p, netif) != ERR_OK) {
+ LWIP_DEBUGF(NETIF_DEBUG, ("lpc_enetif_input: IP input error\n"));
/* Free buffer */
pbuf_free(p);
- }
- break;
-
- default:
+ }
+ break;
+
+ default:
/* Return buffer */
- pbuf_free(p);
- break;
- }
+ pbuf_free(p);
+ break;
+ }
}
/** \brief Determine if the passed address is usable for the ethernet
* DMA controller.
*
- * \param[in] addr Address of packet to check for DMA safe operation
- * \return 1 if the packet address is not safe, otherwise 0
+ * \param[in] addr Address of packet to check for DMA safe operation
+ * \return 1 if the packet address is not safe, otherwise 0
*/
static s32_t lpc_packet_addr_notsafe(void *addr) {
/* Check for legal address ranges */
@@ -518,7 +518,7 @@
/** \brief Free TX buffers that are complete
*
* \param[in] lpc_enetif Pointer to driver data structure
- * \param[in] cidx EMAC current descriptor comsumer index
+ * \param[in] cidx EMAC current descriptor comsumer index
*/
static void lpc_tx_reclaim_st(struct lpc_enetdata *lpc_enetif, u32_t cidx)
{
@@ -538,7 +538,7 @@
}
#if NO_SYS == 0
- xSemaphoreGive(lpc_enetif->xTXDCountSem);
+ osSemaphoreRelease(lpc_enetif->xTXDCountSem.id);
#endif
lpc_enetif->lpc_last_tx_idx++;
if (lpc_enetif->lpc_last_tx_idx >= LPC_NUM_BUFF_TXDESCS)
@@ -553,7 +553,7 @@
/** \brief User call for freeingTX buffers that are complete
*
- * \param[in] netif the lwip network interface structure for this lpc_enetif
+ * \param[in] netif the lwip network interface structure for this lpc_enetif
*/
void lpc_tx_reclaim(struct netif *netif)
{
@@ -564,14 +564,14 @@
/** \brief Polls if an available TX descriptor is ready. Can be used to
* determine if the low level transmit function will block.
*
- * \param[in] netif the lwip network interface structure for this lpc_enetif
- * \return 0 if no descriptors are read, or >0
+ * \param[in] netif the lwip network interface structure for this lpc_enetif
+ * \return 0 if no descriptors are read, or >0
*/
s32_t lpc_tx_ready(struct netif *netif)
{
s32_t fb;
u32_t idx, cidx;
-
+
cidx = LPC_EMAC->TxConsumeIndex;
idx = LPC_EMAC->TxProduceIndex;
@@ -591,17 +591,16 @@
* interrupt context, as it may block until TX descriptors
* become available.
*
- * \param[in] netif the lwip network interface structure for this lpc_enetif
- * \param[in] p the MAC packet to send (e.g. IP packet including MAC addresses and type)
- * \return ERR_OK if the packet could be sent or an err_t value if the packet couldn't be sent
+ * \param[in] netif the lwip network interface structure for this lpc_enetif
+ * \param[in] p the MAC packet to send (e.g. IP packet including MAC addresses and type)
+ * \return ERR_OK if the packet could be sent or an err_t value if the packet couldn't be sent
*/
-static err_t lpc_low_level_output(struct netif *netif, struct pbuf *p)
+static err_t lpc_low_level_output(struct netif *netif, struct pbuf *p)
{
struct lpc_enetdata *lpc_enetif = netif->state;
struct pbuf *q;
u8_t *dst;
- u32_t idx, sz = 0;
- err_t err = ERR_OK;
+ u32_t idx;
struct pbuf *np;
u32_t dn, notdmasafe = 0;
@@ -629,10 +628,10 @@
/* This buffer better be contiguous! */
LWIP_ASSERT("lpc_low_level_output: New transmit pbuf is chained",
(pbuf_clen(np) == 1));
-
+
/* Copy to DMA safe pbuf */
dst = (u8_t *) np->payload;
- for(q = p; q != NULL; q = q->next) {
+ for(q = p; q != NULL; q = q->next) {
/* Copy the buffer to the descriptor's buffer */
MEMCPY(dst, (u8_t *) q->payload, q->len);
dst += q->len;
@@ -651,16 +650,16 @@
#else
if (notdmasafe)
LWIP_ASSERT("lpc_low_level_output: Not a DMA safe pbuf",
- (notdmasafe == 0));
+ (notdmasafe == 0));
#endif
/* Wait until enough descriptors are available for the transfer. */
/* THIS WILL BLOCK UNTIL THERE ARE ENOUGH DESCRIPTORS AVAILABLE */
while (dn > lpc_tx_ready(netif))
#if NO_SYS == 0
- xSemaphoreTake(lpc_enetif->xTXDCountSem, 0);
+ osSemaphoreWait(lpc_enetif->xTXDCountSem.id, osWaitForever);
#else
- msDelay(1);
+ osDelay(1);
#endif
/* Get free TX buffer index */
@@ -715,8 +714,8 @@
/* Restore access */
sys_mutex_unlock(&lpc_enetif->TXLockMutex);
#endif
-
- return ERR_OK;
+
+ return ERR_OK;
}
/** \brief LPC EMAC interrupt handler.
@@ -730,7 +729,6 @@
/* Interrupts are not used without an RTOS */
NVIC_DisableIRQ(ENET_IRQn);
#else
- signed portBASE_TYPE xRecTaskWoken = pdFALSE, XTXTaskWoken = pdFALSE;
uint32_t ints;
/* Interrupts are of 2 groups - transmit or receive. Based on the
@@ -740,24 +738,17 @@
ints = LPC_EMAC->IntStatus;
if (ints & RXINTGROUP) {
- /* RX group interrupt(s) */
- /* Give semaphore to wakeup RX receive task. Note the FreeRTOS
- method is used instead of the LWIP arch method. */
- xSemaphoreGiveFromISR(lpc_enetdata.RxSem, &xRecTaskWoken);
+ /* RX group interrupt(s): Give semaphore to wakeup RX receive task.*/
+ sys_sem_signal(&lpc_enetdata.RxSem);
}
if (ints & TXINTGROUP) {
- /* TX group interrupt(s) */
- /* Give semaphore to wakeup TX cleanup task. Note the FreeRTOS
- method is used instead of the LWIP arch method. */
- xSemaphoreGiveFromISR(lpc_enetdata.TxCleanSem, &XTXTaskWoken);
+ /* TX group interrupt(s): Give semaphore to wakeup TX cleanup task. */
+ sys_sem_signal(&lpc_enetdata.TxCleanSem);
}
/* Clear pending interrupts */
LPC_EMAC->IntClear = ints;
-
- /* Context switch needed? */
- portEND_SWITCHING_ISR( xRecTaskWoken || XTXTaskWoken );
#endif
}
@@ -766,11 +757,10 @@
*
* This task is called when a packet is received. It will
* pass the packet to the LWIP core.
- *
- * \param[in] pvParameters Not used yet
+ *
+ * \param[in] pvParameters Not used yet
*/
-static portTASK_FUNCTION( vPacketReceiveTask, pvParameters )
-{
+static void packet_rx(void* pvParameters) {
struct lpc_enetdata *lpc_enetif = pvParameters;
while (1) {
@@ -788,11 +778,10 @@
* This task is called when a transmit interrupt occurs and
* reclaims the pbuf and descriptor used for the packet once
* the packet has been transferred.
- *
- * \param[in] pvParameters Not used yet
+ *
+ * \param[in] pvParameters Not used yet
*/
-static portTASK_FUNCTION( vTransmitCleanupTask, pvParameters )
-{
+static void packet_tx(void* pvParameters) {
struct lpc_enetdata *lpc_enetif = pvParameters;
s32_t idx;
@@ -804,7 +793,7 @@
something is holding the bus or the clocks are going too slow. It
can probably be safely removed. */
if (LPC_EMAC->IntStatus & EMAC_INT_TX_UNDERRUN) {
- LINK_STATS_INC(link.err);
+ LINK_STATS_INC(link.err);
LINK_STATS_INC(link.drop);
#if NO_SYS == 0
@@ -841,13 +830,16 @@
*
* \param[in] netif Pointer to LWIP netif structure
*/
-static err_t low_level_init(struct netif *netif)
-{
+static err_t low_level_init(struct netif *netif)
+{
struct lpc_enetdata *lpc_enetif = netif->state;
- err_t err = ERR_OK;
-
+ err_t err = ERR_OK;
+
/* Enable MII clocking */
- CLKPWR_ConfigPPWR(CLKPWR_PCONP_PCENET, ENABLE);
+ LPC_SC->PCONP |= CLKPWR_PCONP_PCENET;
+
+ LPC_PINCON->PINSEL2 = 0x50150105; /* Enable P1 Ethernet Pins. */
+ LPC_PINCON->PINSEL3 = (LPC_PINCON->PINSEL3 & ~0x0000000F) | 0x00000005;
/* Reset all MAC logic */
LPC_EMAC->MAC1 = EMAC_MAC1_RES_TX | EMAC_MAC1_RES_MCS_TX |
@@ -855,7 +847,7 @@
EMAC_MAC1_SOFT_RES;
LPC_EMAC->Command = EMAC_CR_REG_RES | EMAC_CR_TX_RES | EMAC_CR_RX_RES |
EMAC_CR_PASS_RUNT_FRM;
- msDelay(10);
+ osDelay(10);
/* Initial MAC initialization */
LPC_EMAC->MAC1 = EMAC_MAC1_PASS_ALL;
@@ -915,41 +907,41 @@
return err;
}
-
-/* This function provides a method for the PHY to setup the EMAC
- for the PHY negotiated duplex mode */
-void lpc_emac_set_duplex(int full_duplex)
-{
- if (full_duplex) {
- LPC_EMAC->MAC2 |= EMAC_MAC2_FULL_DUP;
- LPC_EMAC->Command |= EMAC_CR_FULL_DUP;
- LPC_EMAC->IPGT = EMAC_IPGT_FULL_DUP;
- } else {
- LPC_EMAC->MAC2 &= ~EMAC_MAC2_FULL_DUP;
- LPC_EMAC->Command &= ~EMAC_CR_FULL_DUP;
- LPC_EMAC->IPGT = EMAC_IPGT_HALF_DUP;
- }
-}
-
-/* This function provides a method for the PHY to setup the EMAC
- for the PHY negotiated bit rate */
-void lpc_emac_set_speed(int mbs_100)
-{
- if (mbs_100)
- LPC_EMAC->SUPP = EMAC_SUPP_SPEED;
- else
- LPC_EMAC->SUPP = 0;
+
+/* This function provides a method for the PHY to setup the EMAC
+ for the PHY negotiated duplex mode */
+void lpc_emac_set_duplex(int full_duplex)
+{
+ if (full_duplex) {
+ LPC_EMAC->MAC2 |= EMAC_MAC2_FULL_DUP;
+ LPC_EMAC->Command |= EMAC_CR_FULL_DUP;
+ LPC_EMAC->IPGT = EMAC_IPGT_FULL_DUP;
+ } else {
+ LPC_EMAC->MAC2 &= ~EMAC_MAC2_FULL_DUP;
+ LPC_EMAC->Command &= ~EMAC_CR_FULL_DUP;
+ LPC_EMAC->IPGT = EMAC_IPGT_HALF_DUP;
+ }
}
-
-/**
+
+/* This function provides a method for the PHY to setup the EMAC
+ for the PHY negotiated bit rate */
+void lpc_emac_set_speed(int mbs_100)
+{
+ if (mbs_100)
+ LPC_EMAC->SUPP = EMAC_SUPP_SPEED;
+ else
+ LPC_EMAC->SUPP = 0;
+}
+
+/**
* This function is the ethernet packet send function. It calls
- * etharp_output after checking link status.
- *
- * \param[in] netif the lwip network interface structure for this lpc_enetif
- * \param[in] q Pointer to pbug to send
- * \param[in] ipaddr IP address
+ * etharp_output after checking link status.
+ *
+ * \param[in] netif the lwip network interface structure for this lpc_enetif
+ * \param[in] q Pointer to pbug to send
+ * \param[in] ipaddr IP address
* \return ERR_OK or error code
- */
+ */
err_t lpc_etharp_output(struct netif *netif, struct pbuf *q,
ip_addr_t *ipaddr)
{
@@ -958,83 +950,92 @@
return etharp_output(netif, q, ipaddr);
return ERR_CONN;
-}
-
-/**
- * Should be called at the beginning of the program to set up the
- * network interface.
- *
- * This function should be passed as a parameter to netif_add().
- *
- * @param[in] netif the lwip network interface structure for this lpc_enetif
- * @return ERR_OK if the loopif is initialized
- * ERR_MEM if private data couldn't be allocated
- * any other err_t on error
- */
-err_t lpc_enetif_init(struct netif *netif)
-{
- err_t err;
-
- LWIP_ASSERT("netif != NULL", (netif != NULL));
-
+}
+
+#if NO_SYS == 0
+/* periodic PHY status update */
+void phy_update(void const *nif) {
+ lpc_phy_sts_sm((struct netif*)nif);
+}
+osTimerDef(phy_update, phy_update);
+#endif
+
+/**
+ * Should be called at the beginning of the program to set up the
+ * network interface.
+ *
+ * This function should be passed as a parameter to netif_add().
+ *
+ * @param[in] netif the lwip network interface structure for this lpc_enetif
+ * @return ERR_OK if the loopif is initialized
+ * ERR_MEM if private data couldn't be allocated
+ * any other err_t on error
+ */
+err_t lpc_enetif_init(struct netif *netif)
+{
+ err_t err;
+
+ LWIP_ASSERT("netif != NULL", (netif != NULL));
+
lpc_enetdata.netif = netif;
/* set MAC hardware address */
- board_get_macaddr(netif->hwaddr);
- netif->hwaddr_len = ETHARP_HWADDR_LEN;
-
- /* maximum transfer unit */
- netif->mtu = 1500;
-
- /* device capabilities */
- netif->flags = NETIF_FLAG_BROADCAST | NETIF_FLAG_ETHARP | NETIF_FLAG_UP |
- NETIF_FLAG_ETHERNET;
-
+ mbed_mac_address((char *)netif->hwaddr);
+ netif->hwaddr_len = ETHARP_HWADDR_LEN;
+
+ /* maximum transfer unit */
+ netif->mtu = 1500;
+
+ /* device capabilities */
+ netif->flags = NETIF_FLAG_BROADCAST | NETIF_FLAG_ETHARP | NETIF_FLAG_ETHERNET;
+
/* Initialize the hardware */
netif->state = &lpc_enetdata;
- err = low_level_init(netif);
+ err = low_level_init(netif);
if (err != ERR_OK)
return err;
-#if LWIP_NETIF_HOSTNAME
- /* Initialize interface hostname */
- netif->hostname = "lwiplpc";
+#if LWIP_NETIF_HOSTNAME
+ /* Initialize interface hostname */
+ netif->hostname = "lwiplpc";
#endif /* LWIP_NETIF_HOSTNAME */
- netif->name[0] = 'e';
+ netif->name[0] = 'e';
netif->name[1] = 'n';
- netif->output = lpc_etharp_output;
+ netif->output = lpc_etharp_output;
netif->linkoutput = lpc_low_level_output;
- /* For FreeRTOS, start tasks */
+ /* CMSIS-RTOS, start tasks */
#if NO_SYS == 0
- lpc_enetdata.xTXDCountSem = xSemaphoreCreateCounting(LPC_NUM_BUFF_TXDESCS,
- LPC_NUM_BUFF_TXDESCS);
- LWIP_ASSERT("xTXDCountSem creation error",
- (lpc_enetdata.xTXDCountSem != NULL));
-
- err = sys_mutex_new(&lpc_enetdata.TXLockMutex);
+ #ifdef CMSIS_OS_RTX
+ memset(lpc_enetdata.xTXDCountSem.data, 0, sizeof(lpc_enetdata.xTXDCountSem.data));
+ lpc_enetdata.xTXDCountSem.def.semaphore = lpc_enetdata.xTXDCountSem.data;
+ #endif
+ lpc_enetdata.xTXDCountSem.id = osSemaphoreCreate(&lpc_enetdata.xTXDCountSem.def, LPC_NUM_BUFF_TXDESCS);
+ LWIP_ASSERT("xTXDCountSem creation error", (lpc_enetdata.xTXDCountSem.id != NULL));
+
+ err = sys_mutex_new(&lpc_enetdata.TXLockMutex);
LWIP_ASSERT("TXLockMutex creation error", (err == ERR_OK));
-
+
/* Packet receive task */
err = sys_sem_new(&lpc_enetdata.RxSem, 0);
- LWIP_ASSERT("RxSem creation error", (err == ERR_OK));
- sys_thread_new("receive_thread", vPacketReceiveTask, netif->state,
- DEFAULT_THREAD_STACKSIZE, tskRECPKT_PRIORITY);
-
+ LWIP_ASSERT("RxSem creation error", (err == ERR_OK));
+ sys_thread_new("receive_thread", packet_rx, netif->state, DEFAULT_THREAD_STACKSIZE, RX_PRIORITY);
+
/* Transmit cleanup task */
- err = sys_sem_new(&lpc_enetdata.TxCleanSem, 0);
- LWIP_ASSERT("TxCleanSem creation error", (err == ERR_OK));
- sys_thread_new("txclean_thread", vTransmitCleanupTask, netif->state,
- DEFAULT_THREAD_STACKSIZE, tskTXCLEAN_PRIORITY);
+ sys_thread_new("txclean_thread", packet_tx, netif->state, DEFAULT_THREAD_STACKSIZE, TX_PRIORITY);
+
+ /* periodic PHY status update */
+ osTimerId phy_timer = osTimerCreate(osTimer(phy_update), osTimerPeriodic, (void *)netif);
+ osTimerStart(phy_timer, 250);
#endif
-
- return ERR_OK;
+
+ return ERR_OK;
}
-/**
- * @}
+/**
+ * @}
*/
-/* --------------------------------- End Of File ------------------------------ */
+/* --------------------------------- End Of File ------------------------------ */