diff options
Diffstat (limited to 'nuttx/drivers/net/cs89x0.c')
| -rw-r--r-- | nuttx/drivers/net/cs89x0.c | 450 |
1 files changed, 350 insertions, 100 deletions
diff --git a/nuttx/drivers/net/cs89x0.c b/nuttx/drivers/net/cs89x0.c index f8d5ba58a..5fe8c8702 100644 --- a/nuttx/drivers/net/cs89x0.c +++ b/nuttx/drivers/net/cs89x0.c @@ -65,7 +65,7 @@ # define CONFIG_CS89x0_NINTERFACES 1 #endif -/* TX poll deley = 1 seconds. CLK_TCK is the number of clock ticks per second */ +/* TX poll delay = 1 seconds. CLK_TCK is the number of clock ticks per second */ #define CS89x0_WDDELAY (1*CLK_TCK) #define CS89x0_POLLHSEC (1*2) @@ -76,37 +76,39 @@ /* This is a helper pointer for accessing the contents of the Ethernet header */ -#define BUF ((struct uip_eth_hdr *)cs89x0->sk_dev.d_buf) +#define BUF ((struct uip_eth_hdr *)cs89x0->cs_dev.d_buf) -/**************************************************************************** - * Private Types - ****************************************************************************/ - -/* The cs89x0_driver_s encapsulates all state information for a single hardware - * interface +/* If there is only one CS89x0 instance, then mapping the CS89x0 IRQ to + * a driver state instance is trivial. */ -struct cs89x0_driver_s -{ - boolean sk_bifup; /* TRUE:ifup FALSE:ifdown */ - WDOG_ID sk_txpoll; /* TX poll timer */ - WDOG_ID sk_txtimeout; /* TX timeout timer */ - - /* This holds the information visible to uIP/NuttX */ +#if CONFIG_CS89x0_NINTERFACES == 1 +# define cs89x0_mapirq(irq) g_cs89x0[0] +#endif - struct uip_driver_s sk_dev; /* Interface understood by uIP */ -}; +/**************************************************************************** + * Private Types + ****************************************************************************/ /**************************************************************************** * Private Data ****************************************************************************/ -static struct cs89x0_driver_s g_cs89x0[CONFIG_CS89x0_NINTERFACES]; +static FAR struct cs89x0_driver_s *g_cs89x0[CONFIG_CS89x0_NINTERFACES]; /**************************************************************************** * Private Function Prototypes ****************************************************************************/ +/* CS89x0 register access */ + +static uint16 cs89x0_getreg(struct cs89x0_driver_s *cs89x0, int offset); +static void cs89x0_putreg(struct cs89x0_driver_s *cs89x0, int offset, + uint16 value); +static uint16 cs89x0_getppreg(struct cs89x0_driver_s *cs89x0, int addr); +static void cs89x0_putppreg(struct cs89x0_driver_s *cs89x0, int addr, + uint16 value); + /* Common TX logic */ static int cs89x0_transmit(struct cs89x0_driver_s *cs89x0); @@ -115,7 +117,10 @@ static int cs89x0_uiptxpoll(struct uip_driver_s *dev); /* Interrupt handling */ static void cs89x0_receive(struct cs89x0_driver_s *cs89x0); -static void cs89x0_txdone(struct cs89x0_driver_s *cs89x0); +static void cs89x0_txdone(struct cs89x0_driver_s *cs89x0, uint16 isq); +#if CONFIG_CS89x0_NINTERFACES > 1 +static inline FAR struct cs89x0_driver_s *cs89x0_mapirq(int irq); +#endif static int cs89x0_interrupt(int irq, FAR void *context); /* Watchdog timer expirations */ @@ -134,6 +139,80 @@ static int cs89x0_txavail(struct uip_driver_s *dev); ****************************************************************************/ /**************************************************************************** + * Function: cs89x0_getreg and cs89x0_putreg + * + * Description: + * Read from and write to a CS89x0 register + * + * Parameters: + * cs89x0 - Reference to the driver state structure + * offset - Offset to the CS89x0 register + * value - Value to be written (cs89x0_putreg only) + * + * Returned Value: + * cs89x0_getreg: The 16-bit value of the register + * cs89x0_putreg: None + * + ****************************************************************************/ + +static uint16 cs89x0_getreg(struct cs89x0_driver_s *cs89x0, int offset) +{ +#ifdef CONFIG_CS89x0_ALIGN16 + return getreg16(s89x0->cs_base + offset); +#else + return (uint16)getreg32(s89x0->cs_base + offset); +#endif +} + +static void cs89x0_putreg(struct cs89x0_driver_s *cs89x0, int offset, uint16 value) +{ +#ifdef CONFIG_CS89x0_ALIGN16 + return putreg16(value, s89x0->cs_base + offset); +#else + return (uint16)putreg32((uint32)value, s89x0->cs_base + offset); +#endif +} + +/**************************************************************************** + * Function: cs89x0_getppreg and cs89x0_putppreg + * + * Description: + * Read from and write to a CS89x0 page packet register + * + * Parameters: + * cs89x0 - Reference to the driver state structure + * addr - Address of the CS89x0 page packet register + * value - Value to be written (cs89x0_putppreg only) + * + * Returned Value: + * cs89x0_getppreg: The 16-bit value of the page packet register + * cs89x0_putppreg: None + * + ****************************************************************************/ + +static uint16 cs89x0_getppreg(struct cs89x0_driver_s *cs89x0, int addr) +{ +#ifdef CONFIG_CS89x0_ALIGN16 + putreg16((uint16)addr, cs89x0->cs_base + CS89x0_PPTR_OFFSET); + return getreg16(s89x0->cs_base + CS89x0_PDATA_OFFSET); +#else + putreg32((uint32)addr, cs89x0->cs_base + CS89x0_PPTR_OFFSET); + return (uint16)getreg32(s89x0->cs_base + CS89x0_PDATA_OFFSET); +#endif +} + +static void cs89x0_putppreg(struct cs89x0_driver_s *cs89x0, int addr, uint16 value) +{ +#ifdef CONFIG_CS89x0_ALIGN16 + putreg16((uint16)addr, cs89x0->cs_base + CS89x0_PPTR_OFFSET); + putreg16(value), cs89x0->cs_base + CS89x0_PDATA_OFFSET); +#else + putreg32((uint32)addr, cs89x0->cs_base + CS89x0_PPTR_OFFSET); + putreg32((uint32)value, cs89x0->cs_base + CS89x0_PDATA_OFFSET); +#endif +} + +/**************************************************************************** * Function: cs89x0_transmit * * Description: @@ -153,18 +232,23 @@ static int cs89x0_txavail(struct uip_driver_s *dev); static int cs89x0_transmit(struct cs89x0_driver_s *cs89x0) { /* Verify that the hardware is ready to send another packet */ +#warning "Missing logic" /* Increment statistics */ +#warning "Missing logic" /* Disable Ethernet interrupts */ +#warning "Missing logic" - /* Send the packet: address=cs89x0->sk_dev.d_buf, length=cs89x0->sk_dev.d_len */ + /* Send the packet: address=cs89x0->cs_dev.d_buf, length=cs89x0->cs_dev.d_len */ +#warning "Missing logic" /* Restore Ethernet interrupts */ +#warning "Missing logic" /* Setup the TX timeout watchdog (perhaps restarting the timer) */ - (void)wd_start(cs89x0->sk_txtimeout, CS89x0_TXTIMEOUT, cs89x0_txtimeout, 1, (uint32)cs89x0); + (void)wd_start(cs89x0->cs_txtimeout, CS89x0_TXTIMEOUT, cs89x0_txtimeout, 1, (uint32)cs89x0); return OK; } @@ -197,14 +281,15 @@ static int cs89x0_uiptxpoll(struct uip_driver_s *dev) * the field d_len is set to a value > 0. */ - if (cs89x0->sk_dev.d_len > 0) + if (cs89x0->cs_dev.d_len > 0) { - uip_arp_out(&cs89x0->sk_dev); + uip_arp_out(&cs89x0->cs_dev); cs89x0_transmit(cs89x0); /* Check if there is room in the CS89x0 to hold another packet. If not, * return a non-zero value to terminate the poll. */ +#warning "Missing logic" } /* If zero is returned, the polling will continue until all connections have @@ -222,6 +307,7 @@ static int cs89x0_uiptxpoll(struct uip_driver_s *dev) * * Parameters: * cs89x0 - Reference to the driver state structure + * isq - Interrupt status queue value read by interrupt handler * * Returned Value: * None @@ -230,55 +316,100 @@ static int cs89x0_uiptxpoll(struct uip_driver_s *dev) * ****************************************************************************/ -static void cs89x0_receive(struct cs89x0_driver_s *cs89x0) +static void cs89x0_receive(struct cs89x0_driver_s *cs89x0, uint16 isq) { - do + uint16 *dest; + uint16 rxlength; + int nbytes; + + /* Check for errors and update statistics */ + + rxlength = cs89x0_getreg(PPR_RXLENGTH); + if ((isq & RX_OK) == 0) { - /* Check for errors and update statistics */ +#ifdef CONFIG_C89x0_STATISTICS + cd89x0->cs_stats.rx_errors++; + if ((isq & RX_RUNT) != 0) + { + cd89x0->cs_stats.rx_lengtherrors++; + } + if ((isq & RX_EXTRA_DATA) != 0) + { + cd89x0->cs_stats.rx_lengtherrors++; + } + if (isq & RX_CRC_ERROR) != 0) + { + if (!(isq & (RX_EXTRA_DATA|RX_RUNT))) + { + cd89x0->cs_stats.rx_crcerrors++; + } + } + if ((isq & RX_DRIBBLE) != 0) + { + cd89x0->cs_stats.rx_frameerrors++; + } +#endif + return; + } - /* Check if the packet is a valid size for the uIP buffer configuration */ + /* Check if the packet is a valid size for the uIP buffer configuration */ - /* Copy the data data from the hardware to cs89x0->sk_dev.d_buf. Set - * amount of data in cs89x0->sk_dev.d_len - */ + if (rxlength > ???) + { +#ifdef CONFIG_C89x0_STATISTICS + cd89x0->cs_stats.rx_errors++; + cd89x0->cs_stats.rx_lengtherrors++; +#endif + return; + } + + /* Copy the data data from the hardware to cs89x0->cs_dev.d_buf. Set + * amount of data in cs89x0->cs_dev.d_len + */ + + dest = (uint16*)cs89x0->cs_dev.d_buf; + for (nbytes = 0; nbytes < rxlength; nbytes += sizeof(uint16)) + { + *dest++ = cs89x0_getreg(PPR_RXFRAMELOCATION); + } - /* We only accept IP packets of the configured type and ARP packets */ +#ifdef CONFIG_C89x0_STATISTICS + cd89x0->cs_stats.rx_packets++; +#endif + /* We only accept IP packets of the configured type and ARP packets */ #ifdef CONFIG_NET_IPv6 - if (BUF->type == HTONS(UIP_ETHTYPE_IP6)) + if (BUF->type == HTONS(UIP_ETHTYPE_IP6)) #else - if (BUF->type == HTONS(UIP_ETHTYPE_IP)) + if (BUF->type == HTONS(UIP_ETHTYPE_IP)) #endif + { + uip_arp_ipin(); + uip_input(&cs89x0->cs_dev); + + /* If the above function invocation resulted in data that should be + * sent out on the network, the field d_len will set to a value > 0. + */ + + if (cs89x0->cs_dev.d_len > 0) { - uip_arp_ipin(); - uip_input(&cs89x0->sk_dev); - - /* If the above function invocation resulted in data that should be - * sent out on the network, the field d_len will set to a value > 0. - */ - - if (cs89x0->sk_dev.d_len > 0) - { - uip_arp_out(&cs89x0->sk_dev); - cs89x0_transmit(cs89x0); - } - } - else if (BUF->type == htons(UIP_ETHTYPE_ARP)) - { - uip_arp_arpin(&cs89x0->sk_dev); + uip_arp_out(&cs89x0->cs_dev); + cs89x0_transmit(cs89x0); + } + } + else if (BUF->type == htons(UIP_ETHTYPE_ARP)) + { + uip_arp_arpin(&cs89x0->cs_dev); - /* If the above function invocation resulted in data that should be - * sent out on the network, the field d_len will set to a value > 0. - */ + /* If the above function invocation resulted in data that should be + * sent out on the network, the field d_len will set to a value > 0. + */ - if (cs89x0->sk_dev.d_len > 0) - { - cs89x0_transmit(cs89x0); - } - } - } + if (cs89x0->cs_dev.d_len > 0) + { + cs89x0_transmit(cs89x0); + } } - while (); /* While there are more packets to be processed */ } /**************************************************************************** @@ -297,20 +428,80 @@ static void cs89x0_receive(struct cs89x0_driver_s *cs89x0) * ****************************************************************************/ -static void cs89x0_txdone(struct cs89x0_driver_s *cs89x0) +static void cs89x0_txdone(struct cs89x0_driver_s *cs89x0, uint16 isq) { - /* Check for errors and update statistics */ + /* Check for errors and update statistics. The lower 6-bits of the ISQ + * hold the register address causing the interrupt. We got here because + * those bits indicated */ + +#ifdef CONFIG_C89x0_STATISTICS + cd89x0->cs_stats.tx_packets++; + if ((isq & ISQ_TXEVENT_TXOK) == 0) + { + cd89x0->cs_stats.tx_errors++; + } + if ((isq & ISQ_TXEVENT_LOSSOFCRS) != 0) + { + cd89x0->cs_stats.tx_carriererrors++; + } + if ((isq & ISQ_TXEVENT_SQEERROR) != 0) + { + cd89x0->cs_stats.tx_heartbeaterrors++; + } + if (i(sq & ISQ_TXEVENT_OUTWINDOW) != 0) + { + cd89x0->cs_stats.tx_windowerrors++; + } + if (isq & TX_16_COL) + { + cd89x0->cs_stats.tx_abortederrors++; + } +#endif /* If no further xmits are pending, then cancel the TX timeout */ - wd_cancel(cs89x0->sk_txtimeout); + wd_cancel(cs89x0->cs_txtimeout); /* Then poll uIP for new XMIT data */ - (void)uip_poll(&cs89x0->sk_dev, cs89x0_uiptxpoll); + (void)uip_poll(&cs89x0->cs_dev, cs89x0_uiptxpoll); } /**************************************************************************** + * Function: cs89x0_mapirq + * + * Description: + * Map an IRQ number to a CS89x0 device state instance. This is only + * necessary to handler the case where the architecture includes more than + * on CS89x0 chip. + * + * Parameters: + * irq - Number of the IRQ that generated the interrupt + * + * Returned Value: + * A reference to device state structure (NULL if irq does not correspond + * to any CS89x0 device). + * + * Assumptions: + * + ****************************************************************************/ + +#if CONFIG_CS89x0_NINTERFACES > 1 +static inline FAR struct cs89x0_driver_s *cs89x0_mapirq(int irq) +{ + int i; + for (i = 0; i < CONFIG_CS89x0_NINTERFACES; i++) + { + if (g_cs89x0[i] && g_cs89x0[i].irq == irq) + { + return g_cs89x0[i]; + } + } + return NULL' +} +#endif + +/**************************************************************************** * Function: cs89x0_interrupt * * Description: @@ -329,26 +520,63 @@ static void cs89x0_txdone(struct cs89x0_driver_s *cs89x0) static int cs89x0_interrupt(int irq, FAR void *context) { - register struct cs89x0_driver_s *cs89x0 = &g_cs89x0[0]; - - /* Disable Ethernet interrupts */ - - /* Get and clear interrupt status bits */ - - /* Handle interrupts according to status bit settings */ + register struct cs89x0_driver_s *cs89x0 = s89x0_mapirq(irq); + uint16 isq; + +#ifdef CONFIG_DEBUG + if (!cs89x0) + { + return -ENODEV; + } +#endif - /* Check if we received an incoming packet, if so, call cs89x0_receive() */ + /* Read and process all of the events from the ISQ */ - cs89x0_receive(cs89x0); + while ((isq = cs89x0_getreg(dev, CS89x0_ISQ_OFFSET)) != 0) + { + nvdbg("ISQ: %04x\n", isq); + switch (isq & ISQ_EVENTMASK) + { + case ISQ_RXEVENT: + cs89x0_receive(cs89x0); + break; - /* Check is a packet transmission just completed. If so, call cs89x0_txdone */ + case ISQ_TXEVENT: + cs89x0_txdone(cs89x0, isq); + break; - cs89x0_txdone(cs89x0); + case ISQ_BUFEVENT: + if ((isq & ISQ_BUFEVENT_TXUNDERRUN) != 0) + { + ndbg("Transmit underrun\n"); +#ifdef CONFIG_CS89x0_XMITEARLY + + cd89x0->cs_txunderrun++; + if (cd89x0->cs_txunderrun == 3) + { + cd89x0->send_cmd = TX_AFTER_381; + } + else if (cd89x0->cs_txunderrun == 6) + { + cd89x0->send_cmd = TX_AFTER_ALL; + } +#endif + } + break; - /* Enable Ethernet interrupts (perhaps excluding the TX done interrupt if - * there are no pending transmissions. - */ + case ISQ_RXMISSEVENT: +#ifdef CONFIG_C89x0_STATISTICS + cd89x0->cs_stats.rx_missederrors += (isq >>6); +#endif + break; + case ISQ_TXCOLEVENT: +#ifdef CONFIG_C89x0_STATISTICS + cd89x0->cs_stats.collisions += (isq >>6); +#endif + break; + } + } return OK; } @@ -375,12 +603,14 @@ static void cs89x0_txtimeout(int argc, uint32 arg, ...) struct cs89x0_driver_s *cs89x0 = (struct cs89x0_driver_s *)arg; /* Increment statistics and dump debug info */ +#warning "Missing logic" /* Then reset the hardware */ +#warning "Missing logic" /* Then poll uIP for new XMIT data */ - (void)uip_poll(&cs89x0->sk_dev, cs89x0_uiptxpoll); + (void)uip_poll(&cs89x0->cs_dev, cs89x0_uiptxpoll); } /**************************************************************************** @@ -405,14 +635,15 @@ static void cs89x0_polltimer(int argc, uint32 arg, ...) struct cs89x0_driver_s *cs89x0 = (struct cs89x0_driver_s *)arg; /* Check if there is room in the send another TXr packet. */ +#warning "Missing logic" /* If so, update TCP timing states and poll uIP for new XMIT data */ - (void)uip_timer(&cs89x0->sk_dev, cs89x0_uiptxpoll, CS89x0_POLLHSEC); + (void)uip_timer(&cs89x0->cs_dev, cs89x0_uiptxpoll, CS89x0_POLLHSEC); /* Setup the watchdog poll timer again */ - (void)wd_start(cs89x0->sk_txpoll, CS89x0_WDDELAY, cs89x0_polltimer, 1, arg); + (void)wd_start(cs89x0->cs_txpoll, CS89x0_WDDELAY, cs89x0_polltimer, 1, arg); } /**************************************************************************** @@ -440,15 +671,16 @@ static int cs89x0_ifup(struct uip_driver_s *dev) dev->d_ipaddr & 0xff, (dev->d_ipaddr >> 8) & 0xff, (dev->d_ipaddr >> 16) & 0xff, dev->d_ipaddr >> 24 ); - /* Initilize Ethernet interface */ + /* Initialize the Ethernet interface */ +#warning "Missing logic" /* Set and activate a timer process */ - (void)wd_start(cs89x0->sk_txpoll, CS89x0_WDDELAY, cs89x0_polltimer, 1, (uint32)cs89x0); + (void)wd_start(cs89x0->cs_txpoll, CS89x0_WDDELAY, cs89x0_polltimer, 1, (uint32)cs89x0); /* Enable the Ethernet interrupt */ - cs89x0->sk_bifup = TRUE; + cs89x0->cs_bifup = TRUE; up_enable_irq(CONFIG_CS89x0_IRQ); return OK; } @@ -481,12 +713,12 @@ static int cs89x0_ifdown(struct uip_driver_s *dev) /* Cancel the TX poll timer and TX timeout timers */ - wd_cancel(cs89x0->sk_txpoll); - wd_cancel(cs89x0->sk_txtimeout); + wd_cancel(cs89x0->cs_txpoll); + wd_cancel(cs89x0->cs_txtimeout); /* Reset the device */ - cs89x0->sk_bifup = FALSE; + cs89x0->cs_bifup = FALSE; irqrestore(flags); return OK; } @@ -519,13 +751,14 @@ static int cs89x0_txavail(struct uip_driver_s *dev) /* Ignore the notification if the interface is not yet up */ - if (cs89x0->sk_bifup) + if (cs89x0->cs_bifup) { /* Check if there is room in the hardware to hold another outgoing packet. */ +#warning "Missing logic" /* If so, then poll uIP for new XMIT data */ - (void)uip_poll(&cs89x0->sk_dev, cs89x0_uiptxpoll); + (void)uip_poll(&cs89x0->cs_dev, cs89x0_uiptxpoll); } irqrestore(flags); @@ -543,7 +776,13 @@ static int cs89x0_txavail(struct uip_driver_s *dev) * Initialize the Ethernet driver * * Parameters: - * None + * impl - decribes the the implementation of the cs89x00 implementation. + * This reference is retained so so must remain stable throughout the + * life of the driver instance. + * devno - Identifies the device number. This must be a number between + * zero CONFIG_CS89x0_NINTERFACES and the same devno must not be + * initialized twice. The associated network device will be referred + * to with the name "eth" followed by this number (eth0, eth1, etc). * * Returned Value: * OK on success; Negated errno on failure. @@ -554,13 +793,24 @@ static int cs89x0_txavail(struct uip_driver_s *dev) /* Initialize the CS89x0 chip and driver */ -int cs89x0_initialize(void) +int cs89x0_initialize(FAR const cs89x0_driver_s *cs89x0, int devno) { + /* Sanity checks -- only performed with debug enabled */ + +#ifdef CONFIG_DEBUG + if (!cs89x0 || (unsigned)devno > CONFIG_CS89x0_NINTERFACES || g_cs89x00[devno]) + { + return -EINVAL; + } +#endif + /* Check if a Ethernet chip is recognized at its I/O base */ +#warning "Missing logic" + /* Attach the IRQ to the driver */ - if (irq_attach(CONFIG_CS89x0_IRQ, cs89x0_interrupt)) + if (irq_attach(cs89x0->irq, cs89x0_interrupt)) { /* We could not attach the ISR to the ISR */ @@ -569,22 +819,22 @@ int cs89x0_initialize(void) /* Initialize the driver structure */ - memset(g_cs89x0, 0, CONFIG_CS89x0_NINTERFACES*sizeof(struct cs89x0_driver_s)); - g_cs89x0[0].sk_dev.d_ifup = cs89x0_ifup; /* I/F down callback */ - g_cs89x0[0].sk_dev.d_ifdown = cs89x0_ifdown; /* I/F up (new IP address) callback */ - g_cs89x0[0].sk_dev.d_txavail = cs89x0_txavail; /* New TX data callback */ - g_cs89x0[0].sk_dev.d_private = (void*)g_cs89x0; /* Used to recover private state from dev */ + g_cs89x[devno] = cs89x0; /* Used to map IRQ back to instance */ + cs89x0->cs_dev.d_ifup = cs89x0_ifup; /* I/F down callback */ + cs89x0->cs_dev.d_ifdown = cs89x0_ifdown; /* I/F up (new IP address) callback */ + cs89x0->cs_dev.d_txavail = cs89x0_txavail; /* New TX data callback */ + cs89x0->cs_dev.d_private = (void*)cs89x0; /* Used to recover private state from dev */ /* Create a watchdog for timing polling for and timing of transmisstions */ - g_cs89x0[0].sk_txpoll = wd_create(); /* Create periodic poll timer */ - g_cs89x0[0].sk_txtimeout = wd_create(); /* Create TX timeout timer */ + cs89x0->cs_txpoll = wd_create(); /* Create periodic poll timer */ + cs89x0->cs_txtimeout = wd_create(); /* Create TX timeout timer */ - /* Read the MAC address from the hardware into g_cs89x0[0].sk_dev.d_mac.ether_addr_octet */ + /* Read the MAC address from the hardware into cs89x0->cs_dev.d_mac.ether_addr_octet */ /* Register the device with the OS so that socket IOCTLs can be performed */ - (void)netdev_register(&g_cs89x0[0].sk_dev); + (void)netdev_register(&cs89x0->cs_dev); return OK; } |