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rt-thread-official/bsp/tm4c129x/drivers/drv_eth.c

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[BSP] tm4c129x add eth driver 1. Add ETH MAC driver using DMA for Tx and Rx lwip pBuf. 2. Modify the tivaware emac library to fix the bug that PHY read is not stable when sysclk is 120MHz 3. In PHY IRQ handler, insert a dummy reading (REG_BMSR) before read PHY_STS to force update STS register.
2014-07-25 19:07:25 +08:00
/*
* File : drv_eth.c
* This file is part of RT-Thread RTOS
* COPYRIGHT (C) 2009-2013 RT-Thread Develop Team
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rt-thread.org/license/LICENSE
*
* Change Logs:
* Date Author Notes
* 2014-07-25 ArdaFu Port to TM4C129X
*/
/**
* @file - tivaif.c
* lwIP Ethernet interface for Stellaris LM4F Devices
*
*/
/**
* Copyright (c) 2001-2004 Swedish Institute of Computer Science.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICui32AR PURPOSE ARE DISCLAIMED. IN NO EVENT
* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*
* This file is part of the lwIP TCP/IP stack.
*
* Author: Adam Dunkels <adam@sics.se>
*
*/
/**
* Copyright (c) 2008-2012 Texas Instruments Incorporated
*
* This file is derived from the ``ethernetif.c'' skeleton Ethernet network
* interface driver for lwIP.
*
*/
#include "lwip/opt.h"
#include "lwip/def.h"
#include "lwip/mem.h"
#include "lwip/pbuf.h"
#include "lwip/sys.h"
#include <lwip/stats.h>
#include <lwip/snmp.h>
#include "lwip/tcpip.h"
#include "netif/etharp.h"
#include "netif/ppp_oe.h"
/**
* Sanity Check: This interface driver will NOT work if the following defines
* are incorrect.
*
*/
#if (PBUF_LINK_HLEN != 16)
#error "PBUF_LINK_HLEN must be 16 for this interface driver!"
#endif
#if (ETH_PAD_SIZE != 0)
#error "ETH_PAD_SIZE must be 0 for this interface driver!"
#endif
#if (!SYS_LIGHTWEIGHT_PROT)
#error "SYS_LIGHTWEIGHT_PROT must be enabled for this interface driver!"
#endif
/**
* Set the physical address of the PHY we will be using if this is not
* specified in lwipopts.h. We assume 0 for the internal PHY.
*/
#ifndef PHY_PHYS_ADDR
#define PHY_PHYS_ADDR 0
#endif
#ifndef EMAC_PHY_CONFIG
#define EMAC_PHY_CONFIG (EMAC_PHY_TYPE_INTERNAL | EMAC_PHY_INT_MDIX_EN | \
EMAC_PHY_AN_100B_T_FULL_DUPLEX)
#endif
/**
* If necessary, set the defaui32t number of transmit and receive DMA descriptors
* used by the Ethernet MAC.
*
*/
#ifndef NUM_RX_DESCRIPTORS
#define NUM_RX_DESCRIPTORS 4
#endif
#ifndef NUM_TX_DESCRIPTORS
#define NUM_TX_DESCRIPTORS 8
#endif
/**
* Setup processing for PTP (IEEE-1588).
*
*/
#if LWIP_PTPD
extern uint32_t g_ui32SysClk;
extern uint32_t g_ui32PTPTickRate;
extern void lwIPHostGetTime(u32_t *time_s, u32_t *time_ns);
#endif
/**
* Stellaris DriverLib Header Files required for this interface driver.
*
*/
#include <stdint.h>
#include <stdbool.h>
#include "inc/hw_emac.h"
#include "inc/hw_ints.h"
#include "inc/hw_memmap.h"
#include "inc/hw_types.h"
#include "driverlib/emac.h"
#include "driverlib/interrupt.h"
#include "driverlib/sysctl.h"
#include "driverlib/flash.h"
#include "driverlib/interrupt.h"
#include "driverlib/pin_map.h"
#include "driverlib/rom_map.h"
#include "driverlib/gpio.h"
#include <netif/ethernetif.h>
#include "lwipopts.h"
#include "drv_eth.h"
/**
* A structure used to keep track of driver state and error counts.
*/
typedef struct {
uint32_t ui32TXCount;
uint32_t ui32TXCopyCount;
uint32_t ui32TXCopyFailCount;
uint32_t ui32TXNoDescCount;
uint32_t ui32TXBufQueuedCount;
uint32_t ui32TXBufFreedCount;
uint32_t ui32RXBufReadCount;
uint32_t ui32RXPacketReadCount;
uint32_t ui32RXPacketErrCount;
uint32_t ui32RXPacketCBErrCount;
uint32_t ui32RXNoBufCount;
}
tDriverStats;
tDriverStats g_sDriverStats;
#ifdef DEBUG
/**
* Note: This rather weird construction where we invoke the macro with the
* name of the field minus its Hungarian prefix is a workaround for a problem
* experienced with GCC which does not like concatenating tokens after an
* operator, specifically '.' or '->', in a macro.
*/
#define DRIVER_STATS_INC(x) do{ g_sDriverStats.ui32##x++; } while(0)
#define DRIVER_STATS_DEC(x) do{ g_sDriverStats.ui32##x--; } while(0)
#define DRIVER_STATS_ADD(x, inc) do{ g_sDriverStats.ui32##x += (inc); } while(0)
#define DRIVER_STATS_SUB(x, dec) do{ g_sDriverStats.ui32##x -= (dec); } while(0)
#else
#define DRIVER_STATS_INC(x)
#define DRIVER_STATS_DEC(x)
#define DRIVER_STATS_ADD(x, inc)
#define DRIVER_STATS_SUB(x, dec)
#endif
/**
* Helper struct holding a DMA descriptor and the pbuf it currently refers
* to.
*/
typedef struct {
tEMACDMADescriptor Desc;
struct pbuf *pBuf;
} tDescriptor;
typedef struct {
tDescriptor *pDescriptors;
uint32_t ui32NumDescs;
uint32_t ui32Read;
uint32_t ui32Write;
} tDescriptorList;
/**
* Helper struct to hold private data used to operate your ethernet interface.
* Keeping the ethernet address of the MAC in this struct is not necessary
* as it is already kept in the struct netif.
* But this is only an example, anyway...
*/
typedef struct {
struct eth_addr *ethaddr;
/* Add whatever per-interface state that is needed here. */
tDescriptorList *pTxDescList;
tDescriptorList *pRxDescList;
} tStellarisIF;
/**
* Global variable for this interface's private data. Needed to allow
* the interrupt handlers access to this information outside of the
* context of the lwIP netif.
*
*/
tDescriptor g_pTxDescriptors[NUM_TX_DESCRIPTORS];
tDescriptor g_pRxDescriptors[NUM_RX_DESCRIPTORS];
tDescriptorList g_TxDescList = {
g_pTxDescriptors, NUM_TX_DESCRIPTORS, 0, 0
};
tDescriptorList g_RxDescList = {
g_pRxDescriptors, NUM_RX_DESCRIPTORS, 0, 0
};
static tStellarisIF g_StellarisIFData = {
0, &g_TxDescList, &g_RxDescList
};
/**
* Interrupt counters (for debug purposes).
*/
volatile uint32_t g_ui32NormalInts;
volatile uint32_t g_ui32AbnormalInts;
/**
* A macro which determines whether a pointer is within the SRAM address
* space and, hence, points to a buffer that the Ethernet MAC can directly
* DMA from.
*/
#define PTR_SAFE_FOR_EMAC_DMA(ptr) (((uint32_t)(ptr) >= 0x2000000) && \
((uint32_t)(ptr) < 0x20070000))
typedef struct
{
/* inherit from ethernet device */
struct eth_device parent;
tStellarisIF* dma_if;
/* for rx_thread async get pbuf */
rt_mailbox_t rx_pbuf_mb;
} net_device;
typedef net_device* net_device_t;
static char rx_pbuf_mb_pool[8*4];
static struct rt_mailbox eth_rx_pbuf_mb;
static net_device eth_dev_entry;
static net_device_t eth_dev = &eth_dev_entry;
/**
* Initialize the transmit and receive DMA descriptor lists.
*/
void
InitDMADescriptors(void)
{
uint32_t ui32Loop;
/* Transmit list - mark all descriptors as not owned by the hardware */
for(ui32Loop = 0; ui32Loop < NUM_TX_DESCRIPTORS; ui32Loop++)
{
g_pTxDescriptors[ui32Loop].pBuf = (struct pbuf *)0;
g_pTxDescriptors[ui32Loop].Desc.ui32Count = 0;
g_pTxDescriptors[ui32Loop].Desc.pvBuffer1 = 0;
g_pTxDescriptors[ui32Loop].Desc.DES3.pLink =
((ui32Loop == (NUM_TX_DESCRIPTORS - 1)) ?
&g_pTxDescriptors[0].Desc : &g_pTxDescriptors[ui32Loop + 1].Desc);
g_pTxDescriptors[ui32Loop].Desc.ui32CtrlStatus = DES0_TX_CTRL_INTERRUPT |
DES0_TX_CTRL_CHAINED | DES0_TX_CTRL_IP_ALL_CKHSUMS;
}
g_TxDescList.ui32Read = 0;
g_TxDescList.ui32Write = 0;
/* Receive list - tag each descriptor with a pbuf and set all fields to
* allow packets to be received.
*/
for(ui32Loop = 0; ui32Loop < NUM_RX_DESCRIPTORS; ui32Loop++)
{
g_pRxDescriptors[ui32Loop].pBuf = pbuf_alloc(PBUF_RAW, PBUF_POOL_BUFSIZE,
PBUF_POOL);
g_pRxDescriptors[ui32Loop].Desc.ui32Count = DES1_RX_CTRL_CHAINED;
if(g_pRxDescriptors[ui32Loop].pBuf)
{
/* Set the DMA to write directly into the pbuf payload. */
g_pRxDescriptors[ui32Loop].Desc.pvBuffer1 =
g_pRxDescriptors[ui32Loop].pBuf->payload;
g_pRxDescriptors[ui32Loop].Desc.ui32Count |=
(g_pRxDescriptors[ui32Loop].pBuf->len << DES1_RX_CTRL_BUFF1_SIZE_S);
g_pRxDescriptors[ui32Loop].Desc.ui32CtrlStatus = DES0_RX_CTRL_OWN;
}
else
{
LWIP_DEBUGF(NETIF_DEBUG, ("tivaif_init: pbuf_alloc error\n"));
/* No pbuf available so leave the buffer pointer empty. */
g_pRxDescriptors[ui32Loop].Desc.pvBuffer1 = 0;
g_pRxDescriptors[ui32Loop].Desc.ui32CtrlStatus = 0;
}
g_pRxDescriptors[ui32Loop].Desc.DES3.pLink =
((ui32Loop == (NUM_RX_DESCRIPTORS - 1)) ?
&g_pRxDescriptors[0].Desc : &g_pRxDescriptors[ui32Loop + 1].Desc);
}
g_TxDescList.ui32Read = 0;
g_TxDescList.ui32Write = 0;
//
// Set the descriptor pointers in the hardware.
//
EMACRxDMADescriptorListSet(EMAC0_BASE, &g_pRxDescriptors[0].Desc);
EMACTxDMADescriptorListSet(EMAC0_BASE, &g_pTxDescriptors[0].Desc);
}
/**
* In this function, the hardware should be initialized.
* Called from tivaif_init().
*
* @param netif the already initialized lwip network interface structure
* for this ethernetif
*/
static void
tivaif_hwinit(struct netif *psNetif)
{
uint16_t ui16Val;
/* Initialize the DMA descriptors. */
InitDMADescriptors();
/* Clear any stray PHY interrupts that may be set. */
ui16Val = EMACPHYRead(EMAC0_BASE, PHY_PHYS_ADDR, EPHY_MISR1);
ui16Val = EMACPHYRead(EMAC0_BASE, PHY_PHYS_ADDR, EPHY_MISR2);
/* Configure and enable the link status change interrupt in the PHY. */
ui16Val = EMACPHYRead(EMAC0_BASE, PHY_PHYS_ADDR, EPHY_SCR);
ui16Val |= (EPHY_SCR_INTEN_EXT | EPHY_SCR_INTOE_EXT);
EMACPHYWrite(EMAC0_BASE, PHY_PHYS_ADDR, EPHY_SCR, ui16Val);
EMACPHYWrite(EMAC0_BASE, PHY_PHYS_ADDR, EPHY_MISR1, (EPHY_MISR1_LINKSTATEN |
EPHY_MISR1_SPEEDEN | EPHY_MISR1_DUPLEXMEN | EPHY_MISR1_ANCEN));
/* Read the PHY interrupt status to clear any stray events. */
ui16Val = EMACPHYRead(EMAC0_BASE, PHY_PHYS_ADDR, EPHY_MISR1);
/**
* Set MAC filtering options. We receive all broadcast and mui32ticast
* packets along with those addressed specifically for us.
*/
EMACFrameFilterSet(EMAC0_BASE, (EMAC_FRMFILTER_HASH_AND_PERFECT |
EMAC_FRMFILTER_PASS_MULTICAST));
#if LWIP_PTPD
//
// Enable timestamping on all received packets.
//
// We set the fine clock adjustment mode and configure the subsecond
// increment to half the 25MHz PTPD clock. This will give us maximum control
// over the clock rate adjustment and keep the arithmetic easy later. It
// should be possible to synchronize with higher accuracy than this with
// appropriate juggling of the subsecond increment count and the addend
// register value, though.
//
EMACTimestampConfigSet(EMAC0_BASE, (EMAC_TS_ALL_RX_FRAMES |
EMAC_TS_DIGITAL_ROLLOVER |
EMAC_TS_PROCESS_IPV4_UDP | EMAC_TS_ALL |
EMAC_TS_PTP_VERSION_1 | EMAC_TS_UPDATE_FINE),
(1000000000 / (25000000 / 2)));
EMACTimestampAddendSet(EMAC0_BASE, 0x80000000);
EMACTimestampEnable(EMAC0_BASE);
#endif
/* Clear any pending MAC interrupts. */
EMACIntClear(EMAC0_BASE, EMACIntStatus(EMAC0_BASE, false));
/* Enable the Ethernet MAC transmitter and receiver. */
EMACTxEnable(EMAC0_BASE);
EMACRxEnable(EMAC0_BASE);
/* Enable the Ethernet RX and TX interrupt source. */
EMACIntEnable(EMAC0_BASE, (EMAC_INT_RECEIVE | EMAC_INT_TRANSMIT |
EMAC_INT_TX_STOPPED | EMAC_INT_RX_NO_BUFFER |
EMAC_INT_RX_STOPPED | EMAC_INT_PHY));
/* Enable the Ethernet interrupt. */
IntEnable(INT_EMAC0);
/* Enable all processor interrupts. */
IntMasterEnable();
/* Tell the PHY to start an auto-negotiation cycle. */
EMACPHYWrite(EMAC0_BASE, PHY_PHYS_ADDR, EPHY_BMCR, (EPHY_BMCR_ANEN |
EPHY_BMCR_RESTARTAN));
}
#ifdef DEBUG
/**
* Dump the chain of pbuf pointers to the debug output.
*/
void
tivaif_trace_pbuf(const char *pcTitle, struct pbuf *p)
{
LWIP_DEBUGF(NETIF_DEBUG, ("%s %08x (%d, %d)", pcTitle, p, p->tot_len,
p->len));
do
{
p = p->next;
if(p)
{
LWIP_DEBUGF(NETIF_DEBUG, ("->%08x(%d)", p, p->len));
}
else
{
LWIP_DEBUGF(NETIF_DEBUG, ("->%08x", p));
}
} while((p != NULL) && (p->tot_len != p->len));
LWIP_DEBUGF(NETIF_DEBUG, ("\n"));
}
#endif
/**
* This function is used to check whether a passed pbuf contains only buffers
* resident in regions of memory that the Ethernet MAC can access. If any
* buffers in the chain are outside a directly-DMAable section of memory,
* the pbuf is copied to SRAM and a different pointer returned. If all
* buffers are safe, the pbuf reference count is incremented and the original
* pointer returned.
*/
static struct pbuf *
tivaif_check_pbuf(struct pbuf *p)
{
struct pbuf *pBuf;
rt_err_t Err;
pBuf = p;
#ifdef DEBUG
tivaif_trace_pbuf("Original:", p);
#endif
/* Walk the list of buffers in the pbuf checking each. */
do
{
/* Does this pbuf's payload reside in memory that the Ethernet DMA
* can access?
*/
if(!PTR_SAFE_FOR_EMAC_DMA(pBuf->payload))
{
/* This buffer is outside the DMA-able memory space so we need
* to copy the pbuf.
*/
pBuf = pbuf_alloc(PBUF_RAW, p->tot_len, PBUF_POOL);
/* If we got a new pbuf... */
if(pBuf)
{
/* ...copy the old pbuf into the new one. */
Err = pbuf_copy(pBuf, p);
/* If we failed to copy the pbuf, free the newly allocated one
* and make sure we return a NULL to show a problem.
*/
if(Err != RT_EOK)
{
DRIVER_STATS_INC(TXCopyFailCount);
pbuf_free(pBuf);
pBuf = NULL;
}
else
{
#ifdef DEBUG
tivaif_trace_pbuf("Copied:", pBuf);
#endif
DRIVER_STATS_INC(TXCopyCount);
/* Reduce the reference count on the original pbuf since
* we're not going to hold on to it after returning from
* tivaif_transmit. Note that we already bumped
* the reference count at the top of tivaif_transmit.
*/
pbuf_free(p);
}
}
/* Send back the new pbuf pointer or NULL if an error occurred. */
return(pBuf);
}
/* Move on to the next buffer in the queue */
pBuf = pBuf->next;
}
while(pBuf);
/**
* If we get here, the passed pbuf can be safely used without needing to
* be copied.
*/
return(p);
}
/**
* This function should do the actual transmission of the packet. The packet is
* contained in the pbuf that is passed to the function. This pbuf might be
* chained.
*
* @param psNetif the lwip network interface structure for this ethernetif
* @param p the MAC packet to send (e.g. IP packet including MAC addresses and type)
* @return RT_EOK if the packet coui32d be sent
* an err_t value if the packet coui32dn't be sent
*/
static rt_err_t
tivaif_transmit(net_device_t dev, struct pbuf *p)
{
tStellarisIF *pIF;
tDescriptor *pDesc;
struct pbuf *pBuf;
uint32_t ui32NumChained, ui32NumDescs;
bool bFirst;
SYS_ARCH_DECL_PROTECT(lev);
LWIP_DEBUGF(NETIF_DEBUG, ("tivaif_transmit 0x%08x, len %d\n", p,
p->tot_len));
/**
* This entire function must run within a "critical section" to preserve
* the integrity of the transmit pbuf queue.
*/
SYS_ARCH_PROTECT(lev);
/* Update our transmit attempt counter. */
DRIVER_STATS_INC(TXCount);
/**
* Increase the reference count on the packet provided so that we can
* hold on to it until we are finished transmitting its content.
*/
pbuf_ref(p);
/**
* Determine whether all buffers passed are within SRAM and, if not, copy
* the pbuf into SRAM-resident buffers so that the Ethernet DMA can access
* the data.
*/
p = tivaif_check_pbuf(p);
/* Make sure we still have a valid buffer (it may have been copied) */
if(!p)
{
LINK_STATS_INC(link.memerr);
SYS_ARCH_UNPROTECT(lev);
return(-RT_ENOMEM);
}
/* Get our state data from the netif structure we were passed. */
//pIF = (tStellarisIF *)psNetif->state;
pIF = dev->dma_if;
/* Make sure that the transmit descriptors are not all in use */
pDesc = &(pIF->pTxDescList->pDescriptors[pIF->pTxDescList->ui32Write]);
if(pDesc->pBuf)
{
/**
* The current write descriptor has a pbuf attached to it so this
* implies that the ring is fui32l. Reject this transmit request with a
* memory error since we can't satisfy it just now.
*/
pbuf_free(p);
LINK_STATS_INC(link.memerr);
DRIVER_STATS_INC(TXNoDescCount);
SYS_ARCH_UNPROTECT(lev);
return (-RT_ENOMEM);
}
/* How many pbufs are in the chain passed? */
ui32NumChained = (uint32_t)pbuf_clen(p);
/* How many free transmit descriptors do we have? */
ui32NumDescs = (pIF->pTxDescList->ui32Read > pIF->pTxDescList->ui32Write) ?
(pIF->pTxDescList->ui32Read - pIF->pTxDescList->ui32Write) :
((NUM_TX_DESCRIPTORS - pIF->pTxDescList->ui32Write) +
pIF->pTxDescList->ui32Read);
/* Do we have enough free descriptors to send the whole packet? */
if(ui32NumDescs < ui32NumChained)
{
/* No - we can't transmit this whole packet so return an error. */
pbuf_free(p);
LINK_STATS_INC(link.memerr);
DRIVER_STATS_INC(TXNoDescCount);
SYS_ARCH_UNPROTECT(lev);
return (-RT_ENOMEM);
}
/* Tag the first descriptor as the start of the packet. */
bFirst = true;
pDesc->Desc.ui32CtrlStatus = DES0_TX_CTRL_FIRST_SEG;
/* Here, we know we can send the packet so write it to the descriptors */
pBuf = p;
while(ui32NumChained)
{
/* Get a pointer to the descriptor we will write next. */
pDesc = &(pIF->pTxDescList->pDescriptors[pIF->pTxDescList->ui32Write]);
/* Fill in the buffer pointer and length */
pDesc->Desc.ui32Count = (uint32_t)pBuf->len;
pDesc->Desc.pvBuffer1 = pBuf->payload;
/* Tag the first descriptor as the start of the packet. */
if(bFirst)
{
bFirst = false;
pDesc->Desc.ui32CtrlStatus = DES0_TX_CTRL_FIRST_SEG;
}
else
{
pDesc->Desc.ui32CtrlStatus = 0;
}
pDesc->Desc.ui32CtrlStatus |= (DES0_TX_CTRL_IP_ALL_CKHSUMS |
DES0_TX_CTRL_CHAINED);
/* Decrement our descriptor counter, move on to the next buffer in the
* pbuf chain. */
ui32NumChained--;
pBuf = pBuf->next;
/* Update the descriptor list write index. */
pIF->pTxDescList->ui32Write++;
if(pIF->pTxDescList->ui32Write == NUM_TX_DESCRIPTORS)
{
pIF->pTxDescList->ui32Write = 0;
}
/* If this is the last descriptor, mark it as the end of the packet. */
if(!ui32NumChained)
{
pDesc->Desc.ui32CtrlStatus |= (DES0_TX_CTRL_LAST_SEG |
DES0_TX_CTRL_INTERRUPT);
/* Tag the descriptor with the original pbuf pointer. */
pDesc->pBuf = p;
}
else
{
/* Set the lsb of the pbuf pointer. We use this as a signal that
* we should not free the pbuf when we are walking the descriptor
* list while processing the transmit interrupt. We only free the
* pbuf when processing the last descriptor used to transmit its
* chain.
*/
pDesc->pBuf = (struct pbuf *)((uint32_t)p + 1);
}
DRIVER_STATS_INC(TXBufQueuedCount);
/* Hand the descriptor over to the hardware. */
pDesc->Desc.ui32CtrlStatus |= DES0_TX_CTRL_OWN;
}
/* Tell the transmitter to start (in case it had stopped). */
EMACTxDMAPollDemand(EMAC0_BASE);
/* Update lwIP statistics */
LINK_STATS_INC(link.xmit);
SYS_ARCH_UNPROTECT(lev);
return(RT_EOK);
}
/**
* This function will process all transmit descriptors and free pbufs attached
* to any that have been transmitted since we last checked.
*
* This function is called only from the Ethernet interrupt handler.
*
* @param netif the lwip network interface structure for this ethernetif
* @return None.
*/
static void
tivaif_process_transmit(tStellarisIF *pIF)
{
tDescriptorList *pDescList;
uint32_t ui32NumDescs;
/* Get a pointer to the transmit descriptor list. */
pDescList = pIF->pTxDescList;
/* Walk the list until we have checked all descriptors or we reach the
* write pointer or find a descriptor that the hardware is still working
* on.
*/
for(ui32NumDescs = 0; ui32NumDescs < pDescList->ui32NumDescs; ui32NumDescs++)
{
/* Has the buffer attached to this descriptor been transmitted? */
if(pDescList->pDescriptors[pDescList->ui32Read].Desc.ui32CtrlStatus &
DES0_TX_CTRL_OWN)
{
/* No - we're finished. */
break;
}
/* Does this descriptor have a buffer attached to it? */
if(pDescList->pDescriptors[pDescList->ui32Read].pBuf)
{
/* Yes - free it if it's not marked as an intermediate pbuf */
if(!((uint32_t)(pDescList->pDescriptors[pDescList->ui32Read].pBuf) & 1))
{
pbuf_free(pDescList->pDescriptors[pDescList->ui32Read].pBuf);
DRIVER_STATS_INC(TXBufFreedCount);
}
pDescList->pDescriptors[pDescList->ui32Read].pBuf = NULL;
}
else
{
/* If the descriptor has no buffer, we are finished. */
break;
}
/* Move on to the next descriptor. */
pDescList->ui32Read++;
if(pDescList->ui32Read == pDescList->ui32NumDescs)
{
pDescList->ui32Read = 0;
}
}
}
/**
* This function will process all receive descriptors that contain newly read
* data and pass complete frames up the lwIP stack as they are found. The
* timestamp of the packet will be placed into the pbuf structure if PTPD is
* enabled.
*
* This function is called only from the Ethernet interrupt handler.
*
* @param psNetif the lwip network interface structure for this ethernetif
* @return None.
*/
static void
tivaif_receive(net_device_t dev)
{
tDescriptorList *pDescList;
tStellarisIF *pIF;
struct pbuf *pBuf;
uint32_t ui32DescEnd;
/* Get a pointer to our state data */
pIF = dev->dma_if;
/* Get a pointer to the receive descriptor list. */
pDescList = pIF->pRxDescList;
/* Start with a NULL pbuf so that we don't try to link chain the first
* time round.
*/
pBuf = NULL;
/* Determine where we start and end our walk of the descriptor list */
ui32DescEnd = pDescList->ui32Read ? (pDescList->ui32Read - 1) : (pDescList->ui32NumDescs - 1);
/* Step through the descriptors that are marked for CPU attention. */
while(pDescList->ui32Read != ui32DescEnd)
{
/* Does the current descriptor have a buffer attached to it? */
if(pDescList->pDescriptors[pDescList->ui32Read].pBuf)
{
/* Yes - determine if the host has filled it yet. */
if(pDescList->pDescriptors[pDescList->ui32Read].Desc.ui32CtrlStatus &
DES0_RX_CTRL_OWN)
{
/* The DMA engine still owns the descriptor so we are finished */
break;
}
DRIVER_STATS_INC(RXBufReadCount);
/* If this descriptor contains the end of the packet, fix up the
* buffer size accordingly.
*/
if(pDescList->pDescriptors[pDescList->ui32Read].Desc.ui32CtrlStatus &
DES0_RX_STAT_LAST_DESC)
{
/* This is the last descriptor for the frame so fix up the
* length. It is safe for us to modify the internal fields
* directly here (rather than calling pbuf_realloc) since we
* know each of these pbufs is never chained.
*/
pDescList->pDescriptors[pDescList->ui32Read].pBuf->len =
(pDescList->pDescriptors[pDescList->ui32Read].Desc.ui32CtrlStatus &
DES0_RX_STAT_FRAME_LENGTH_M) >>
DES0_RX_STAT_FRAME_LENGTH_S;
pDescList->pDescriptors[pDescList->ui32Read].pBuf->tot_len =
pDescList->pDescriptors[pDescList->ui32Read].pBuf->len;
}
if(pBuf)
{
/* Link this pbuf to the last one we looked at since this buffer
* is a continuation of an existing frame (split across mui32tiple
* pbufs). Note that we use pbuf_cat() here rather than
* pbuf_chain() since we don't want to increase the reference
* count of either pbuf - we only want to link them together.
*/
pbuf_cat(pBuf, pDescList->pDescriptors[pDescList->ui32Read].pBuf);
pDescList->pDescriptors[pDescList->ui32Read].pBuf = pBuf;
}
/* Remember the buffer associated with this descriptor. */
pBuf = pDescList->pDescriptors[pDescList->ui32Read].pBuf;
/* Is this the last descriptor for the current frame? */
if(pDescList->pDescriptors[pDescList->ui32Read].Desc.ui32CtrlStatus &
DES0_RX_STAT_LAST_DESC)
{
/* Yes - does the frame contain errors? */
if(pDescList->pDescriptors[pDescList->ui32Read].Desc.ui32CtrlStatus &
DES0_RX_STAT_ERR)
{
/* This is a bad frame so discard it and update the relevant
* statistics.
*/
LWIP_DEBUGF(NETIF_DEBUG, ("tivaif_receive: packet error\n"));
pbuf_free(pBuf);
LINK_STATS_INC(link.drop);
DRIVER_STATS_INC(RXPacketErrCount);
}
else
{
/* This is a good frame so pass it up the stack. */
LINK_STATS_INC(link.recv);
DRIVER_STATS_INC(RXPacketReadCount);
#if LWIP_PTPD
/* Place the timestamp in the PBUF if PTPD is enabled */
pBuf->time_s =
pDescList->pDescriptors[pDescList->ui32Read].Desc.ui32IEEE1588TimeHi;
pBuf->time_ns =
pDescList->pDescriptors[pDescList->ui32Read].Desc.ui32IEEE1588TimeLo;
#endif
#if NO_SYS
if(ethernet_input(pBuf, psNetif) != RT_EOK)
{
#else
//if(tcpip_input(pBuf, psNetif) != RT_EOK)
if((rt_mb_send(dev->rx_pbuf_mb, (rt_uint32_t)pBuf) != RT_EOK) ||
(eth_device_ready(&(dev->parent)) != RT_EOK))
{
#endif
/* drop the packet */
LWIP_DEBUGF(NETIF_DEBUG, ("tivaif_input: input error\n"));
pbuf_free(pBuf);
/* Adjust the link statistics */
LINK_STATS_INC(link.memerr);
LINK_STATS_INC(link.drop);
DRIVER_STATS_INC(RXPacketCBErrCount);
}
/* We're finished with this packet so make sure we don't try
* to link the next buffer to it.
*/
pBuf = NULL;
}
}
}
/* Allocate a new buffer for this descriptor */
pDescList->pDescriptors[pDescList->ui32Read].pBuf = pbuf_alloc(PBUF_RAW,
PBUF_POOL_BUFSIZE,
PBUF_POOL);
pDescList->pDescriptors[pDescList->ui32Read].Desc.ui32Count =
DES1_RX_CTRL_CHAINED;
if(pDescList->pDescriptors[pDescList->ui32Read].pBuf)
{
/* We got a buffer so fill in the payload pointer and size. */
pDescList->pDescriptors[pDescList->ui32Read].Desc.pvBuffer1 =
pDescList->pDescriptors[pDescList->ui32Read].pBuf->payload;
pDescList->pDescriptors[pDescList->ui32Read].Desc.ui32Count |=
(pDescList->pDescriptors[pDescList->ui32Read].pBuf->len <<
DES1_RX_CTRL_BUFF1_SIZE_S);
/* Give this descriptor back to the hardware */
pDescList->pDescriptors[pDescList->ui32Read].Desc.ui32CtrlStatus =
DES0_RX_CTRL_OWN;
}
else
{
LWIP_DEBUGF(NETIF_DEBUG, ("tivaif_receive: pbuf_alloc error\n"));
pDescList->pDescriptors[pDescList->ui32Read].Desc.pvBuffer1 = 0;
/* Update the stats to show we coui32dn't allocate a pbuf. */
DRIVER_STATS_INC(RXNoBufCount);
LINK_STATS_INC(link.memerr);
/* Stop parsing here since we can't leave a broken descriptor in
* the chain.
*/
break;
}
/* Move on to the next descriptor in the chain, taking care to wrap. */
pDescList->ui32Read++;
if(pDescList->ui32Read == pDescList->ui32NumDescs)
{
pDescList->ui32Read = 0;
}
}
}
/**
* Process interrupts from the PHY.
*
* should be called from the Stellaris Ethernet Interrupt Handler. This
* function will read packets from the Stellaris Ethernet fifo and place them
* into a pbuf queue. If the transmitter is idle and there is at least one packet
* on the transmit queue, it will place it in the transmit fifo and start the
* transmitter.
*
*/
void
tivaif_process_phy_interrupt(net_device_t dev)
{
uint16_t ui16Val, ui16Status;
uint32_t ui32Config, ui32Mode, ui32RxMaxFrameSize;
/* Read the PHY interrupt status. This clears all interrupt sources.
* Note that we are only enabling sources in EPHY_MISR1 so we don't
* read EPHY_MISR2.
*/
ui16Val = EMACPHYRead(EMAC0_BASE, PHY_PHYS_ADDR, EPHY_MISR1);
/*
* Dummy read PHY REG EPHY_BMSR, it will force update the EPHY_STS register
*/
EMACPHYRead(EMAC0_BASE, PHY_PHYS_ADDR, EPHY_BMSR);
/* Read the current PHY status. */
ui16Status = EMACPHYRead(EMAC0_BASE, PHY_PHYS_ADDR, EPHY_STS);
/* Has the link status changed? */
if(ui16Val & EPHY_MISR1_LINKSTAT)
{
/* Is link up or down now? */
if(ui16Status & EPHY_STS_LINK)
{
/* Tell lwIP the link is up. */
#if NO_SYS
netif_set_link_up(psNetif);
#else
//tcpip_callback((tcpip_callback_fn)netif_set_link_up, psNetif);
eth_device_linkchange(&(dev->parent), RT_TRUE);
#endif
/* In this case we drop through since we may need to reconfigure
* the MAC depending upon the speed and half/fui32l-duplex settings.
*/
}
else
{
/* Tell lwIP the link is down */
#if NO_SYS
netif_set_link_down(psNetif);
#else
//tcpip_callback((tcpip_callback_fn)netif_set_link_down, psNetif);
eth_device_linkchange(&(dev->parent), RT_FALSE);
#endif
}
}
/* Has the speed or duplex status changed? */
if(ui16Val & (EPHY_MISR1_SPEED | EPHY_MISR1_SPEED | EPHY_MISR1_ANC))
{
/* Get the current MAC configuration. */
EMACConfigGet(EMAC0_BASE, &ui32Config, &ui32Mode,
&ui32RxMaxFrameSize);
/* What speed is the interface running at now?
*/
if(ui16Status & EPHY_STS_SPEED)
{
/* 10Mbps is selected */
ui32Config &= ~EMAC_CONFIG_100MBPS;
}
else
{
/* 100Mbps is selected */
ui32Config |= EMAC_CONFIG_100MBPS;
}
/* Are we in fui32l- or half-duplex mode? */
if(ui16Status & EPHY_STS_DUPLEX)
{
/* Fui32l duplex. */
ui32Config |= EMAC_CONFIG_FULL_DUPLEX;
}
else
{
/* Half duplex. */
ui32Config &= ~EMAC_CONFIG_FULL_DUPLEX;
}
/* Reconfigure the MAC */
EMACConfigSet(EMAC0_BASE, ui32Config, ui32Mode, ui32RxMaxFrameSize);
}
}
/**
* Process tx and rx packets at the low-level interrupt.
*
* should be called from the Stellaris Ethernet Interrupt Handler. This
* function will read packets from the Stellaris Ethernet fifo and place them
* into a pbuf queue. If the transmitter is idle and there is at least one packet
* on the transmit queue, it will place it in the transmit fifo and start the
* transmitter.
*
*/
void
tivaif_interrupt(net_device_t dev, uint32_t ui32Status)
{
/* Update our debug interrupt counters. */
if(ui32Status & EMAC_INT_NORMAL_INT)
{
g_ui32NormalInts++;
}
if(ui32Status & EMAC_INT_ABNORMAL_INT)
{
g_ui32AbnormalInts++;
}
/* Is this an interrupt from the PHY? */
if(ui32Status & EMAC_INT_PHY)
{
tivaif_process_phy_interrupt(dev);
}
/* Process the transmit DMA list, freeing any buffers that have been
* transmitted since our last interrupt.
*/
if(ui32Status & EMAC_INT_TRANSMIT)
{
tivaif_process_transmit(dev->dma_if);
}
/**
* Process the receive DMA list and pass all successfui32ly received packets
* up the stack. We also call this function in cases where the receiver has
* stalled due to missing buffers since the receive function will attempt to
* allocate new pbufs for descriptor entries which have none.
*/
if(ui32Status & (EMAC_INT_RECEIVE | EMAC_INT_RX_NO_BUFFER |
EMAC_INT_RX_STOPPED))
{
tivaif_receive(dev);
}
}
#if NETIF_DEBUG
/* Print an IP header by using LWIP_DEBUGF
* @param p an IP packet, p->payload pointing to the IP header
*/
void
tivaif_debug_print(struct pbuf *p)
{
struct eth_hdr *ethhdr = (struct eth_hdr *)p->payload;
u16_t *plen = (u16_t *)p->payload;
LWIP_DEBUGF(NETIF_DEBUG, ("ETH header:\n"));
LWIP_DEBUGF(NETIF_DEBUG, ("Packet Length:%5"U16_F" \n",*plen));
LWIP_DEBUGF(NETIF_DEBUG, ("Destination: %02"X8_F"-%02"X8_F"-%02"X8_F"-%02"X8_F"-%02"X8_F"-%02"X8_F"\n",
ethhdr->dest.addr[0],
ethhdr->dest.addr[1],
ethhdr->dest.addr[2],
ethhdr->dest.addr[3],
ethhdr->dest.addr[4],
ethhdr->dest.addr[5]));
LWIP_DEBUGF(NETIF_DEBUG, ("Source: %02"X8_F"-%02"X8_F"-%02"X8_F"-%02"X8_F"-%02"X8_F"-%02"X8_F"\n",
ethhdr->src.addr[0],
ethhdr->src.addr[1],
ethhdr->src.addr[2],
ethhdr->src.addr[3],
ethhdr->src.addr[4],
ethhdr->src.addr[5]));
LWIP_DEBUGF(NETIF_DEBUG, ("Packet Type:0x%04"U16_F" \n", ethhdr->type));
}
#endif /* NETIF_DEBUG */
void lwIPEthernetIntHandler(void)
{
uint32_t ui32Status;
#ifdef DEF_INT_TEMPSTAMP
uint32_t ui32TimerStatus;
#endif
//
// Read and Clear the interrupt.
//
ui32Status = MAP_EMACIntStatus(EMAC0_BASE, true);
//
// If the interrupt really came from the Ethernet and not our
// timer, clear it.
//
if(ui32Status)
{
MAP_EMACIntClear(EMAC0_BASE, ui32Status);
}
#ifdef DEF_INT_TEMPSTAMP
//
// Check to see whether a hardware timer interrupt has been reported.
//
if(ui32Status & EMAC_INT_TIMESTAMP)
{
//
// Yes - read and clear the timestamp interrupt status.
//
ui32TimerStatus = EMACTimestampIntStatus(EMAC0_BASE);
//
// If a timer interrupt handler has been registered, call it.
//
if(g_pfnTimerHandler)
{
g_pfnTimerHandler(EMAC0_BASE, ui32TimerStatus);
}
}
#endif
//
// The handling of the interrupt is different based on the use of a RTOS.
//
//
// No RTOS is being used. If a transmit/receive interrupt was active,
// run the low-level interrupt handler.
//
if(ui32Status)
{
tivaif_interrupt(eth_dev, ui32Status);
}
//
// Service the lwIP timers.
//
//lwIPServiceTimers();
}
// OUI:00-12-37 (hex) Texas Instruments, only for test
static int tiva_eth_mac_addr_init(void)
{
int retVal =0;
uint32_t ulUser[2];
uint8_t mac_addr[6];
MAP_FlashUserGet(&ulUser[0], &ulUser[1]);
if((ulUser[0] == 0xffffffff) || (ulUser[1] == 0xffffffff))
{
rt_kprintf("Fail to get mac address from eeprom.\n");
rt_kprintf("Using default mac address\n");
// OUI:00-12-37 (hex) Texas Instruments, only for test
// Configure the hardware MAC address
ulUser[0] = 0x00371200;
ulUser[1] = 0x00563412;
//FlashUserSet(ulUser0, ulUser1);
retVal =-1;
}
//Convert the 24/24 split MAC address from NV ram into a 32/16 split MAC
//address needed to program the hardware registers, then program the MAC
//address into the Ethernet Controller registers.
mac_addr[0] = ((ulUser[0] >> 0) & 0xff);
mac_addr[1] = ((ulUser[0] >> 8) & 0xff);
mac_addr[2] = ((ulUser[0] >> 16) & 0xff);
mac_addr[3] = ((ulUser[1] >> 0) & 0xff);
mac_addr[4] = ((ulUser[1] >> 8) & 0xff);
mac_addr[5] = ((ulUser[1] >> 16) & 0xff);
//
// Program the hardware with its MAC address (for filtering).
//
MAP_EMACAddrSet(EMAC0_BASE, 0, mac_addr);
return retVal;
}
void tiva_eth_lowlevel_init(void)
{
MAP_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOF);
//
// PF1/PK4/PK6 are used for Ethernet LEDs.
//
MAP_GPIOPinConfigure(GPIO_PF0_EN0LED0);
MAP_GPIOPinConfigure(GPIO_PF4_EN0LED1);
GPIOPinTypeEthernetLED(GPIO_PORTF_BASE, GPIO_PIN_0);
GPIOPinTypeEthernetLED(GPIO_PORTF_BASE, GPIO_PIN_4);
//
// Enable the ethernet peripheral.
//
MAP_SysCtlPeripheralEnable(SYSCTL_PERIPH_EMAC0);
MAP_SysCtlPeripheralReset(SYSCTL_PERIPH_EMAC0);
//
// Enable the internal PHY if it's present and we're being
// asked to use it.
//
if((EMAC_PHY_CONFIG & EMAC_PHY_TYPE_MASK) == EMAC_PHY_TYPE_INTERNAL)
{
//
// We've been asked to configure for use with the internal
// PHY. Is it present?
//
if(SysCtlPeripheralPresent(SYSCTL_PERIPH_EPHY0))
{
//
// Yes - enable and reset it.
//
MAP_SysCtlPeripheralEnable(SYSCTL_PERIPH_EPHY0);
MAP_SysCtlPeripheralReset(SYSCTL_PERIPH_EPHY0);
}
else
{
//
// Internal PHY is not present on this part so hang here.
//
rt_kprintf("Internal PHY is not present on this part.\n");
while(1)
{
}
}
}
//
// Wait for the MAC to come out of reset.
//
while(!MAP_SysCtlPeripheralReady(SYSCTL_PERIPH_EMAC0))
{
}
//
// Configure for use with whichever PHY the user requires.
//
MAP_EMACPHYConfigSet(EMAC0_BASE, EMAC_PHY_CONFIG);
//
// Initialize the MAC and set the DMA mode.
//
MAP_EMACInit(EMAC0_BASE, 120000000, //system clock = 120MHz
EMAC_BCONFIG_MIXED_BURST | EMAC_BCONFIG_PRIORITY_FIXED,
4, 4, 0);
//
// Set MAC configuration options.
//
MAP_EMACConfigSet(EMAC0_BASE, (EMAC_CONFIG_FULL_DUPLEX |
EMAC_CONFIG_CHECKSUM_OFFLOAD |
EMAC_CONFIG_7BYTE_PREAMBLE |
EMAC_CONFIG_IF_GAP_96BITS |
EMAC_CONFIG_USE_MACADDR0 |
EMAC_CONFIG_SA_FROM_DESCRIPTOR |
EMAC_CONFIG_BO_LIMIT_1024),
(EMAC_MODE_RX_STORE_FORWARD |
EMAC_MODE_TX_STORE_FORWARD |
EMAC_MODE_TX_THRESHOLD_64_BYTES |
EMAC_MODE_RX_THRESHOLD_64_BYTES), 0);
EMACIntRegister(EMAC0_BASE, lwIPEthernetIntHandler);
}
static rt_err_t eth_dev_init(rt_device_t device)
{
net_device_t net_dev = (net_device_t)device;
struct netif *psNetif = (net_dev->parent.netif);
LWIP_ASSERT("psNetif != NULL", (psNetif != NULL));
#if LWIP_NETIF_HOSTNAME
/* Initialize interface hostname */
psNetif->hostname = "t4mc";
#endif /* LWIP_NETIF_HOSTNAME */
/*
* Initialize the snmp variables and counters inside the struct netif.
* The last argument should be replaced with your link speed, in units
* of bits per second.
*/
//NETIF_INIT_SNMP(psNetif, snmp_ifType_ethernet_csmacd, 1000000);
net_dev->dma_if = &g_StellarisIFData;
/* Remember our MAC address. */
g_StellarisIFData.ethaddr = (struct eth_addr *)&(psNetif->hwaddr[0]);
/* Initialize the hardware */
tivaif_hwinit(psNetif);
return RT_EOK;
}
/* control the interface */
static rt_err_t eth_dev_control(rt_device_t dev, rt_uint8_t cmd, void *args)
{
switch(cmd)
{
case NIOCTL_GADDR:
/* get mac address */
if(args)
MAP_EMACAddrGet(EMAC0_BASE, 0, (uint8_t*)args);
else
return -RT_ERROR;
break;
default :
break;
}
return RT_EOK;
}
/* Open the interface */
static rt_err_t eth_dev_open(rt_device_t dev, rt_uint16_t oflag)
{
return RT_EOK;
}
/* Close the interface */
static rt_err_t eth_dev_close(rt_device_t dev)
{
return RT_EOK;
}
/* Read */
static rt_size_t eth_dev_read(rt_device_t dev, rt_off_t pos, void* buffer, rt_size_t size)
{
rt_set_errno(-RT_ENOSYS);
return 0;
}
/* Write */
static rt_size_t eth_dev_write(rt_device_t dev, rt_off_t pos, const void* buffer, rt_size_t size)
{
rt_set_errno(-RT_ENOSYS);
return 0;
}
static rt_err_t eth_dev_tx(rt_device_t dev, struct pbuf *p)
{
return tivaif_transmit((net_device_t)dev, p);
}
static struct pbuf* eth_dev_rx(rt_device_t dev)
{
rt_err_t result;
rt_uint32_t temp =0;
net_device_t net_dev = (net_device_t)dev;
result = rt_mb_recv(net_dev->rx_pbuf_mb, &temp, RT_WAITING_NO);
return (result == RT_EOK)? (struct pbuf*)temp : RT_NULL;
}
rt_err_t rt_hw_tiva_eth_init(void)
{
rt_err_t result;
/* Clock GPIO and etc */
tiva_eth_lowlevel_init();
tiva_eth_mac_addr_init();
/* init rt-thread device interface */
eth_dev->parent.parent.init = eth_dev_init;
eth_dev->parent.parent.open = eth_dev_open;
eth_dev->parent.parent.close = eth_dev_close;
eth_dev->parent.parent.read = eth_dev_read;
eth_dev->parent.parent.write = eth_dev_write;
eth_dev->parent.parent.control = eth_dev_control;
eth_dev->parent.eth_rx = eth_dev_rx;
eth_dev->parent.eth_tx = eth_dev_tx;
result = rt_mb_init(&eth_rx_pbuf_mb, "epbuf",
&rx_pbuf_mb_pool[0], sizeof(rx_pbuf_mb_pool)/4,
RT_IPC_FLAG_FIFO);
RT_ASSERT(result == RT_EOK);
eth_dev->rx_pbuf_mb = &eth_rx_pbuf_mb;
result = eth_device_init(&(eth_dev->parent), "e0");
return result;
}
#if 0
#ifdef RT_USING_FINSH
#include "finsh.h"
void PHY_Read(uint8_t addr)
{
uint16_t data = EMACPHYRead(EMAC0_BASE, PHY_PHYS_ADDR, addr);
rt_kprintf("R PHY_REG[0x%02X] = 0x%04X\n", addr, data);
}
FINSH_FUNCTION_EXPORT(PHY_Read, (add));
void PHY_Write(uint8_t addr , uint16_t data)
{
EMACPHYWrite(EMAC0_BASE, PHY_PHYS_ADDR, addr, data);
rt_kprintf("W PHY_REG[0x%02X] = 0x%04X\n", addr, data);
}
FINSH_FUNCTION_EXPORT(PHY_Write, (add, data));
void PHY_SetAdd(uint8_t addr0, uint8_t addr1, uint8_t addr2,
uint8_t addr3, uint8_t addr4, uint8_t addr5)
{
uint32_t ulUser[2];
ulUser[0] = (((addr2<<8)|addr1)<<8)|addr0;
ulUser[1] = (((addr5<<8)|addr4)<<8)|addr3;
MAP_FlashUserSet(ulUser[0], ulUser[1]);
MAP_FlashUserSave();
rt_kprintf("Save to EEPROM. please reboot.");
}
FINSH_FUNCTION_EXPORT(PHY_SetAdd, (add0-add5));
#endif //RT_USING_FINSH
#endif