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git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@307 35acf78f-673a-0410-8e92-d51de3d6d3f4

This commit is contained in:
gdisirio 2008-05-26 10:07:44 +00:00
parent d1cad4edb8
commit 04a6871085
3 changed files with 25 additions and 76 deletions
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2
demos/ARM7-AT91SAM7X-WEB-GCC/web/webthread.c
View File

@ -54,7 +54,7 @@ static void network_device_send(void) {
BufDescriptorEntry *bdep; BufDescriptorEntry *bdep;
for (i = 0; i < SEND_RETRY_MAX; i++) { for (i = 0; i < SEND_RETRY_MAX; i++) {
if ((bdep = EMACGetTransmitbuffer()) != NULL) { if ((bdep = EMACGetTransmitBuffer()) != NULL) {
uint8_t *bp = (uint8_t *)bdep->w1; uint8_t *bp = (uint8_t *)bdep->w1;
if(uip_len <= UIP_LLH_LEN + UIP_TCPIP_HLEN) if(uip_len <= UIP_LLH_LEN + UIP_TCPIP_HLEN)

95
ports/ARM7-AT91SAM7X/sam7x_emac.c
View File

@ -33,18 +33,18 @@
EventSource EMACFrameTransmitted; /* A frame was transmitted. */ EventSource EMACFrameTransmitted; /* A frame was transmitted. */
EventSource EMACFrameReceived; /* A frame was received. */ EventSource EMACFrameReceived; /* A frame was received. */
static int received; /* Buffered frames counter. */ //static int received; /* Buffered frames counter. */
static bool_t link_up; /* Last from EMACGetLinkStatus()*/ static bool_t link_up; /* Last from EMACGetLinkStatus()*/
static uint8_t default_mac[] = {0xAA, 0x55, 0x13, 0x37, 0x01, 0x10}; static uint8_t default_mac[] = {0xAA, 0x55, 0x13, 0x37, 0x01, 0x10};
static BufDescriptorEntry rent[EMAC_RECEIVE_BUFFERS] __attribute__((aligned(8))); BufDescriptorEntry rent[EMAC_RECEIVE_BUFFERS] __attribute__((aligned(8)));
static uint8_t rbuffers[EMAC_RECEIVE_BUFFERS * EMAC_RECEIVE_BUFFERS_SIZE] __attribute__((aligned(8))); static uint8_t rbuffers[EMAC_RECEIVE_BUFFERS * EMAC_RECEIVE_BUFFERS_SIZE] __attribute__((aligned(8)));
static BufDescriptorEntry *rxptr; BufDescriptorEntry *rxptr;
static BufDescriptorEntry tent[EMAC_TRANSMIT_BUFFERS] __attribute__((aligned(8))); BufDescriptorEntry tent[EMAC_TRANSMIT_BUFFERS] __attribute__((aligned(8)));
static uint8_t tbuffers[EMAC_TRANSMIT_BUFFERS * EMAC_TRANSMIT_BUFFERS_SIZE] __attribute__((aligned(8))); static uint8_t tbuffers[EMAC_TRANSMIT_BUFFERS * EMAC_TRANSMIT_BUFFERS_SIZE] __attribute__((aligned(8)));
static BufDescriptorEntry *txptr; BufDescriptorEntry *txptr;
#define PHY_ADDRESS 1 #define PHY_ADDRESS 1
#define AT91C_PB15_ERXDV AT91C_PB15_ERXDV_ECRSDV #define AT91C_PB15_ERXDV AT91C_PB15_ERXDV_ECRSDV
@ -105,7 +105,7 @@ static void ServeInterrupt(void) {
if ((isr & AT91C_EMAC_RCOMP) || (rsr & RSR_BITS)) { if ((isr & AT91C_EMAC_RCOMP) || (rsr & RSR_BITS)) {
if (rsr & AT91C_EMAC_REC) { if (rsr & AT91C_EMAC_REC) {
received++; // received++;
chEvtSendI(&EMACFrameReceived); chEvtSendI(&EMACFrameReceived);
} }
AT91C_BASE_EMAC->EMAC_RSR = RSR_BITS; AT91C_BASE_EMAC->EMAC_RSR = RSR_BITS;
@ -136,7 +136,7 @@ void InitEMAC(int prio) {
/* /*
* Buffers initialization. * Buffers initialization.
*/ */
received = 0; // received = 0;
for (i = 0; i < EMAC_RECEIVE_BUFFERS; i++) { for (i = 0; i < EMAC_RECEIVE_BUFFERS; i++) {
rent[i].w1 = (uint32_t)&rbuffers[i * EMAC_RECEIVE_BUFFERS_SIZE]; rent[i].w1 = (uint32_t)&rbuffers[i * EMAC_RECEIVE_BUFFERS_SIZE];
rent[i].w2 = 0; rent[i].w2 = 0;
@ -144,8 +144,8 @@ void InitEMAC(int prio) {
rent[EMAC_RECEIVE_BUFFERS - 1].w1 |= W1_R_WRAP; rent[EMAC_RECEIVE_BUFFERS - 1].w1 |= W1_R_WRAP;
rxptr = rent; rxptr = rent;
for (i = 0; i < EMAC_TRANSMIT_BUFFERS; i++) { for (i = 0; i < EMAC_TRANSMIT_BUFFERS; i++) {
tent[i].w1 = ((uint32_t)&tbuffers[i * EMAC_TRANSMIT_BUFFERS_SIZE]); tent[i].w1 = (uint32_t)&tbuffers[i * EMAC_TRANSMIT_BUFFERS_SIZE];
tent[i].w2 = EMAC_TRANSMIT_BUFFERS_SIZE | W2_T_LAST_BUFFER | W2_T_USED; tent[i].w2 = EMAC_TRANSMIT_BUFFERS_SIZE | W2_T_USED;
} }
tent[EMAC_TRANSMIT_BUFFERS - 1].w2 |= W2_T_WRAP; tent[EMAC_TRANSMIT_BUFFERS - 1].w2 |= W2_T_WRAP;
txptr = tent; txptr = tent;
@ -289,7 +289,7 @@ bool_t EMACGetLinkStatus(void) {
/* /*
* Allocates and locks a buffer for a transmission operation. * Allocates and locks a buffer for a transmission operation.
*/ */
BufDescriptorEntry *EMACGetTransmitbuffer(void) { BufDescriptorEntry *EMACGetTransmitBuffer(void) {
BufDescriptorEntry *cptr; BufDescriptorEntry *cptr;
if (!link_up) if (!link_up)
@ -314,7 +314,7 @@ BufDescriptorEntry *EMACGetTransmitbuffer(void) {
*/ */
void EMACTransmit(BufDescriptorEntry *cptr, size_t size) { void EMACTransmit(BufDescriptorEntry *cptr, size_t size) {
chDbgAssert(size < EMAC_TRANSMIT_BUFFERS_SIZE, "sam7x_emac.c, EMACTransmit"); chDbgAssert(size <= EMAC_TRANSMIT_BUFFERS_SIZE, "sam7x_emac.c, EMACTransmit");
cptr->w2 &= ~W2_R_LENGTH_MASK; cptr->w2 &= ~W2_R_LENGTH_MASK;
cptr->w2 |= size; cptr->w2 |= size;
@ -325,56 +325,6 @@ void EMACTransmit(BufDescriptorEntry *cptr, size_t size) {
chSysUnlock(); chSysUnlock();
} }
/*
* Transmits an ethernet frame.
* Returns TRUE if the frame is queued for transmission else FALSE.
*/
#if 0
bool_t EMACTransmit2(struct MACHeader *hdr, uint8_t *data, size_t size) {
uint8_t *p;
BufDescriptorEntry *cptr;
chDbgAssert((hdr != NULL) || (data != NULL),
"sam7x_emac.c, EMACTransmit #1");
chDbgAssert(size <= (hdr ? EMAC_TRANSMIT_BUFFERS_SIZE - sizeof(struct MACHeader) :
EMAC_TRANSMIT_BUFFERS_SIZE),
"sam7x_emac.c, EMACTransmit #2");
if (!link_up)
return FALSE;
chSysLock();
cptr = txptr;
if (!(cptr->w2 & W2_T_USED) ||
(cptr->w2 & W2_T_LOCKED)) {
chSysUnlock();
return FALSE;
}
cptr->w2 |= W2_T_LOCKED; /* Locks the buffer while copying.*/
if (++txptr >= &tent[EMAC_TRANSMIT_BUFFERS])
txptr = tent;
chSysUnlock();
p = (uint8_t *)cptr->w1;
if (hdr) {
memcpy(p, hdr, sizeof(struct MACHeader));
p += sizeof(struct MACHeader);
}
if (data) {
memcpy(p, data, size);
p += size;
}
cptr->w2 &= ~W2_R_LENGTH_MASK;
cptr->w2 |= p - (uint8_t *)cptr->w1;
chSysLock();
cptr->w2 &= ~(W2_T_USED | W2_T_LOCKED);
AT91C_BASE_EMAC->EMAC_NCR |= AT91C_EMAC_TSTART;
chSysUnlock();
return TRUE;
}
#endif
/* /*
* Reads a buffered frame. * Reads a buffered frame.
* Returns TRUE if a frame was present and read else FALSE. * Returns TRUE if a frame was present and read else FALSE.
@ -386,13 +336,13 @@ bool_t EMACReceive(uint8_t *buf, size_t *sizep) {
uint8_t *p; uint8_t *p;
bool_t overflow, found; bool_t overflow, found;
chSysLock(); // chSysLock();
if (received <= 0) { // if (received <= 0) {
chSysUnlock(); // chSysUnlock();
return FALSE; // return FALSE;
} // }
received--; // received--;
chSysUnlock(); // chSysUnlock();
n = EMAC_RECEIVE_BUFFERS; n = EMAC_RECEIVE_BUFFERS;
@ -401,7 +351,7 @@ bool_t EMACReceive(uint8_t *buf, size_t *sizep) {
*/ */
skip: skip:
while (n && !(rxptr->w1 & W1_R_OWNERSHIP)) { while (n && !(rxptr->w1 & W1_R_OWNERSHIP)) {
if (++rxptr >= &rxptr[EMAC_RECEIVE_BUFFERS]) if (++rxptr >= &rent[EMAC_RECEIVE_BUFFERS])
rxptr = rent; rxptr = rent;
n--; n--;
} }
@ -411,7 +361,7 @@ skip:
*/ */
while (n && (rxptr->w1 & W1_R_OWNERSHIP) && !(rxptr->w2 & W2_R_FRAME_START)) { while (n && (rxptr->w1 & W1_R_OWNERSHIP) && !(rxptr->w2 & W2_R_FRAME_START)) {
rxptr->w1 &= ~W1_R_OWNERSHIP; rxptr->w1 &= ~W1_R_OWNERSHIP;
if (++rxptr >= &rxptr[EMAC_RECEIVE_BUFFERS]) if (++rxptr >= &rent[EMAC_RECEIVE_BUFFERS])
rxptr = rent; rxptr = rent;
n--; n--;
} }
@ -443,13 +393,14 @@ restart:
} }
if (!overflow) { if (!overflow) {
memcpy(p, (void *)(rxptr->w1 & W1_T_BUFFER_MASK), segsize); chDbgAssert(segsize <= 128, "sam7x_emac.c, EMACReceive()")
memcpy(p, (void *)(rxptr->w1 & W1_R_ADDRESS_MASK), segsize);
p += segsize; p += segsize;
size += segsize; size += segsize;
} }
rxptr->w1 &= ~W1_R_OWNERSHIP; rxptr->w1 &= ~W1_R_OWNERSHIP;
if (++rxptr >= &rxptr[EMAC_RECEIVE_BUFFERS]) if (++rxptr >= &rent[EMAC_RECEIVE_BUFFERS])
rxptr = rent; rxptr = rent;
n--; n--;
} }

4
ports/ARM7-AT91SAM7X/sam7x_emac.h
View File

@ -47,8 +47,6 @@ typedef struct {
#define W2_R_MULTICAST_MATCH 0x40000000 #define W2_R_MULTICAST_MATCH 0x40000000
#define W2_R_BROADCAST_DETECTED 0x80000000 #define W2_R_BROADCAST_DETECTED 0x80000000
#define W1_T_BUFFER_MASK 0xFFFFFFFC
#define W2_T_LENGTH_MASK 0x000007FF #define W2_T_LENGTH_MASK 0x000007FF
#define W2_T_LOCKED 0x00000800 /* Not an EMAC flag, used by the driver */ #define W2_T_LOCKED 0x00000800 /* Not an EMAC flag, used by the driver */
#define W2_T_RFU1 0x00003000 #define W2_T_RFU1 0x00003000
@ -67,7 +65,7 @@ extern "C" {
void InitEMAC(int prio); void InitEMAC(int prio);
void EMACSetAddress(const uint8_t *eaddr); void EMACSetAddress(const uint8_t *eaddr);
bool_t EMACGetLinkStatus(void); bool_t EMACGetLinkStatus(void);
BufDescriptorEntry *EMACGetTransmitbuffer(void); BufDescriptorEntry *EMACGetTransmitBuffer(void);
void EMACTransmit(BufDescriptorEntry *cptr, size_t size); void EMACTransmit(BufDescriptorEntry *cptr, size_t size);
bool_t EMACReceive(uint8_t *buf, size_t *sizep); bool_t EMACReceive(uint8_t *buf, size_t *sizep);
#ifdef __cplusplus #ifdef __cplusplus