Correct setting of rrp
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@1606 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo
parent
85b42c7ab2
commit
acab184c80
@ -48,6 +48,7 @@
|
||||
#include <debug.h>
|
||||
#include <wdog.h>
|
||||
#include <errno.h>
|
||||
#include <assert.h>
|
||||
|
||||
#include <nuttx/irq.h>
|
||||
#include <nuttx/arch.h>
|
||||
@ -241,19 +242,21 @@
|
||||
#if defined(CONFIG_DEBUG) && defined(CONFIG_DEBUG_NET)
|
||||
struct ez80mac_statistics_s
|
||||
{
|
||||
uint32 rx_int; /* Number of Rx interrupts received */
|
||||
uint32 rx_ip; /* Number of Rx IP packets received */
|
||||
uint32 rx_arp; /* Number of Rx ARP packets received */
|
||||
uint32 rx_dropped; /* Number of dropped, unsupported Rx packets */
|
||||
uint32 rx_errors; /* Number of Rx errors (all types) */
|
||||
uint32 rx_ovrerrors; /* Number of FIFO overrun errors */
|
||||
uint32 tx_queued; /* Number of Tx descriptors queued */
|
||||
uint32 tx_int; /* Number of Tx interrupts received */
|
||||
uint32 tx_errors; /* Number of Tx errors (all types) */
|
||||
uint32 tx_abterrors; /* Number of aborted Tx descriptors */
|
||||
uint32 tx_fsmerrors; /* Number of Tx state machine errors */
|
||||
uint32 tx_timeouts; /* Number of Tx timeout errors */
|
||||
uint32 sys_int; /* Number of system interrupts received */
|
||||
uint32 rx_int; /* Number of Rx interrupts received */
|
||||
uint32 rx_packets; /* Number of packets received (sum of the following): */
|
||||
uint32 rx_ip; /* Number of Rx IP packets received */
|
||||
uint32 rx_arp; /* Number of Rx ARP packets received */
|
||||
uint32 rx_dropped; /* Number of dropped, unsupported Rx packets */
|
||||
uint32 rx_nok; /* Number of Rx packets received without OK bit */
|
||||
uint32 rx_errors; /* Number of Rx errors (rx_overerrors + rx_nok) */
|
||||
uint32 rx_ovrerrors; /* Number of FIFO overrun errors */
|
||||
uint32 tx_int; /* Number of Tx interrupts received */
|
||||
uint32 tx_packets; /* Number of Tx descriptors queued */
|
||||
uint32 tx_errors; /* Number of Tx errors (sum of the following) */
|
||||
uint32 tx_abterrors; /* Number of aborted Tx descriptors */
|
||||
uint32 tx_fsmerrors; /* Number of Tx state machine errors */
|
||||
uint32 tx_timeouts; /* Number of Tx timeout errors */
|
||||
uint32 sys_int; /* Number of system interrupts received */
|
||||
};
|
||||
# define _MKFIELD(a,b,c) a->b##c
|
||||
# define EMAC_STAT(priv,name) _MKFIELD(priv,stat.,name)++
|
||||
@ -347,10 +350,13 @@ static int ez80emac_miiconfigure(FAR struct ez80emac_driver_s *priv);
|
||||
static void ez80emac_machash(FAR ubyte *mac, int *ndx, int *bitno)
|
||||
#endif
|
||||
|
||||
/* Common TX/RX logic */
|
||||
/* TX/RX logic */
|
||||
|
||||
static int ez80emac_transmit(struct ez80emac_driver_s *priv);
|
||||
static int ez80emac_uiptxpoll(struct uip_driver_s *dev);
|
||||
|
||||
static inline FAR struct ez80emac_desc_s *ez80emac_rwp(void);
|
||||
static inline FAR struct ez80emac_desc_s *ez80emac_rrp(void);
|
||||
static int ez80emac_receive(struct ez80emac_driver_s *priv);
|
||||
|
||||
/* Interrupt handling */
|
||||
@ -943,7 +949,7 @@ static int ez80emac_transmit(struct ez80emac_driver_s *priv)
|
||||
/* Increment statistics */
|
||||
|
||||
flags = irqsave();
|
||||
EMAC_STAT(priv, tx_queued);
|
||||
EMAC_STAT(priv, tx_packets);
|
||||
|
||||
/* The current packet to be sent is txnetx; Calculate the new txnext and
|
||||
* set the ownership to host so that the EMAC does not try to transmit
|
||||
@ -1071,6 +1077,46 @@ static int ez80emac_uiptxpoll(struct uip_driver_s *dev)
|
||||
return ret;
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Function: ez80emac_rwp
|
||||
*
|
||||
* Description:
|
||||
* Get the eZ80 RWP value
|
||||
*
|
||||
* Parameters:
|
||||
* None
|
||||
*
|
||||
* Returned Value:
|
||||
* The current RWP value expressed as a pointer to a descriptor
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
static inline FAR struct ez80emac_desc_s *ez80emac_rwp(void)
|
||||
{
|
||||
return (FAR struct ez80emac_desc_s *)
|
||||
(CONFIG_EZ80_RAMADDR + ((uint24)inp(EZ80_EMAC_RWP_H) << 8) + (uint24)inp(EZ80_EMAC_RWP_L));
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Function: ez80emac_rrp
|
||||
*
|
||||
* Description:
|
||||
* Get the eZ80 RRP value
|
||||
*
|
||||
* Parameters:
|
||||
* None
|
||||
*
|
||||
* Returned Value:
|
||||
* The current RRP value expressed as a pointer to a descriptor
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
static inline FAR struct ez80emac_desc_s *ez80emac_rrp(void)
|
||||
{
|
||||
return (FAR struct ez80emac_desc_s *)
|
||||
(CONFIG_EZ80_RAMADDR + ((uint24)inp(EZ80_EMAC_RRP_H) << 8) + (uint24)inp(EZ80_EMAC_RRP_L));
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Function: ez80emac_receive
|
||||
*
|
||||
@ -1092,23 +1138,24 @@ static int ez80emac_uiptxpoll(struct uip_driver_s *dev)
|
||||
|
||||
static int ez80emac_receive(struct ez80emac_driver_s *priv)
|
||||
{
|
||||
FAR struct ez80emac_desc_s *rxdesc = priv->rxnext;
|
||||
FAR struct ez80emac_desc_s *rxdesc = priv->rxnext;
|
||||
FAR struct ez80emac_desc_s *rwp;
|
||||
ubyte *psrc;
|
||||
ubyte *pdest;
|
||||
int pktlen;
|
||||
int npackets;
|
||||
|
||||
/* The RRP register points to where the next Receive packet is read from.
|
||||
* The read-only EMAC Receive Write Pointer (RWP) egisters reports the
|
||||
* The read-only EMAC Receive Write Pointer (RWP) register reports the
|
||||
* current RxDMA Receive Write pointer. The RxDMA block uses the RRP[12:5]
|
||||
* to compare to RWP[12:5] for determining how many buffers remain. The
|
||||
* result is the BLKSLFT register.
|
||||
*/
|
||||
|
||||
nvdbg("rxnext=%p {%06x, %u, %04x} rrp=%02x%02x rwp=%02x%02x blkslft=%02x\n",
|
||||
rwp = ez80emac_rwp();
|
||||
nvdbg("rxnext=%p {%06x, %u, %04x} rrp=%06x rwp=%06x blkslft=%02x\n",
|
||||
rxdesc, rxdesc->np, rxdesc->pktsize, rxdesc->stat,
|
||||
inp(EZ80_EMAC_RRP_H), inp(EZ80_EMAC_RRP_L),
|
||||
inp(EZ80_EMAC_RWP_H), inp(EZ80_EMAC_RWP_L),
|
||||
ez80emac_rrp(), rwp,
|
||||
inp(EZ80_EMAC_BLKSLFT_H), inp(EZ80_EMAC_BLKSLFT_L));
|
||||
|
||||
/* The RxDMA reads the data from the RxFIFO and stores it in the EMAC
|
||||
@ -1121,14 +1168,19 @@ static int ez80emac_receive(struct ez80emac_driver_s *priv)
|
||||
* set to 1.
|
||||
*/
|
||||
|
||||
/* Process all packets that ownership has been given to the ez80 */
|
||||
|
||||
npackets = 0;
|
||||
while ((rxdesc->stat & EMAC_TXDESC_OWNER) != 0)
|
||||
while (rxdesc != rwp)
|
||||
{
|
||||
DEBUGASSERT(rxdesc == ez80emac_rrp());
|
||||
EMAC_STAT(priv, rx_packets);
|
||||
|
||||
/* Skip over bad packers */
|
||||
|
||||
if ((rxdesc->stat & EMAC_RXDESC_OK) == 0)
|
||||
{
|
||||
nvdbg("Skipping bad RX pkt: %04x\n", rxdesc->stat);
|
||||
EMAC_STAT(priv, rx_errors);
|
||||
EMAC_STAT(priv, rx_nok);
|
||||
continue;
|
||||
}
|
||||
|
||||
@ -1178,11 +1230,23 @@ static int ez80emac_receive(struct ez80emac_driver_s *priv)
|
||||
rxdesc->pktsize = 0;
|
||||
rxdesc->stat = 0;
|
||||
|
||||
rxdesc = priv->rxnext;
|
||||
nvdbg("rxnext=%p {%06x, %u, %04x} rrp=%02x%02x rwp=%02x%02x blkslft=%02x\n",
|
||||
/* Update pointers */
|
||||
|
||||
rxdesc = priv->rxnext;
|
||||
rwp = ez80emac_rwp();
|
||||
|
||||
/* Update the RRP to match our rxnext pointer: "For the hardware flow control
|
||||
* to function properly, the software must update the hardare RRP (EmacRrp)
|
||||
* pointer whenever the software version is upated. The RxDMA uses RWP
|
||||
* and the RRP to determine how many packets remain in the Rx buffer.
|
||||
*/
|
||||
|
||||
outp(EZ80_EMAC_RRP_L, (ubyte)((uint24)rxdesc & 0xff));
|
||||
outp(EZ80_EMAC_RRP_H, (ubyte)(((uint24)rxdesc >> 8) & 0xff));
|
||||
|
||||
nvdbg("rxnext=%p {%06x, %u, %04x} rrp=%06x rwp=%06x blkslft=%02x\n",
|
||||
rxdesc, rxdesc->np, rxdesc->pktsize, rxdesc->stat,
|
||||
inp(EZ80_EMAC_RRP_H), inp(EZ80_EMAC_RRP_L),
|
||||
inp(EZ80_EMAC_RWP_H), inp(EZ80_EMAC_RWP_L),
|
||||
ez80emac_rrp(), rwp,
|
||||
inp(EZ80_EMAC_BLKSLFT_H), inp(EZ80_EMAC_BLKSLFT_L));
|
||||
|
||||
/* We only accept IP packets of the configured type and ARP packets */
|
||||
@ -1768,8 +1832,8 @@ static int ez80_emacinitialize(void)
|
||||
*/
|
||||
|
||||
addr = CONFIG_EZ80_RAMADDR;
|
||||
outp(EZ80_EMAC_TLBP_L, addr & 0xff);
|
||||
outp(EZ80_EMAC_TLBP_H, (addr >> 8) & 0xff);
|
||||
outp(EZ80_EMAC_TLBP_L, (ubyte)(addr & 0xff));
|
||||
outp(EZ80_EMAC_TLBP_H, (ubyte)((addr >> 8) & 0xff));
|
||||
|
||||
priv->txstart = (FAR struct ez80emac_desc_s *)(addr);
|
||||
priv->txnext = priv->txstart;
|
||||
@ -1790,8 +1854,8 @@ static int ez80_emacinitialize(void)
|
||||
*/
|
||||
|
||||
addr += EMAC_TXBUFSIZE;
|
||||
outp(EZ80_EMAC_BP_L, addr & 0xff);
|
||||
outp(EZ80_EMAC_BP_H, (addr >> 8) & 0xff);
|
||||
outp(EZ80_EMAC_BP_L, (ubyte)(addr & 0xff));
|
||||
outp(EZ80_EMAC_BP_H, (ubyte)((addr >> 8) & 0xff));
|
||||
|
||||
priv->rxstart = (FAR struct ez80emac_desc_s *)(addr);
|
||||
priv->rxnext = priv->rxstart;
|
||||
@ -1817,8 +1881,8 @@ static int ez80_emacinitialize(void)
|
||||
* is limited to a minimum of 32 bytes, the last five bits are always zero.
|
||||
*/
|
||||
|
||||
outp(EZ80_EMAC_RRP_H, addr & 0xff);
|
||||
outp(EZ80_EMAC_RRP_L, (addr >> 8) & 0xff);
|
||||
outp(EZ80_EMAC_RRP_L, (ubyte)(addr & 0xff));
|
||||
outp(EZ80_EMAC_RRP_H, (ubyte)((addr >> 8) & 0xff));
|
||||
|
||||
nvdbg("rrp=%02x%02x rwp=%02x%02x\n",
|
||||
inp(EZ80_EMAC_RRP_H), inp(EZ80_EMAC_RRP_L),
|
||||
@ -1829,8 +1893,8 @@ static int ez80_emacinitialize(void)
|
||||
*/
|
||||
|
||||
addr += EMAC_RXBUFSIZE;
|
||||
outp(EZ80_EMAC_RHBP_L, addr & 0xff);
|
||||
outp(EZ80_EMAC_RHBP_H, (addr >> 8) & 0xff);
|
||||
outp(EZ80_EMAC_RHBP_L, (ubyte)(addr & 0xff));
|
||||
outp(EZ80_EMAC_RHBP_H, (ubyte)((addr >> 8) & 0xff));
|
||||
priv->rxendp1 = (FAR struct ez80emac_desc_s *)addr;
|
||||
|
||||
nvdbg("rxendp1=%p rhbp=%02x%02x\n",
|
||||
|
||||
Loading…
Reference in New Issue
Block a user