diff options
Diffstat (limited to 'bsps/powerpc/haleakala/net/network.c')
| -rw-r--r-- | bsps/powerpc/haleakala/net/network.c | 1249 |
1 files changed, 0 insertions, 1249 deletions
diff --git a/bsps/powerpc/haleakala/net/network.c b/bsps/powerpc/haleakala/net/network.c deleted file mode 100644 index 41481255cb..0000000000 --- a/bsps/powerpc/haleakala/net/network.c +++ /dev/null @@ -1,1249 +0,0 @@ -/* - * network.c - * RTEMS_490 - * - * Created by Michael Hamel on 18/11/08. - * - * This code is for the PPC405EX, 405EXr on the Haleakala board with an - * 88E1111 PHY. - * Its has some adaptations for the 405GP, and 405GPr (untested). - * - * It should handle dual interfaces correctly, but has not been tested. - * - */ - -#include <machine/rtems-bsd-kernel-space.h> - -#include <bsp.h> -#include <stdio.h> -#include <errno.h> -#include <rtems/error.h> -#include <rtems/rtems_bsdnet.h> -#include <rtems/rtems_mii_ioctl.h> -#include <rtems/score/assert.h> - -#include <sys/param.h> -#include <sys/mbuf.h> -#include <sys/socket.h> -#include <sys/sockio.h> - -#include <net/if.h> - -#include <netinet/in.h> - -#include <netinet/if_ether.h> -#include <bsp/irq.h> - -#include <sys/types.h> -#include <sys/socket.h> - -#include <ppc4xx/ppc405gp.h> -#include <ppc4xx/ppc405ex.h> - -#define qDebug /* General printf debugging */ -/* #define qMultiDebug */ /* Debugging for the multicast hardware filter */ - -/*---------------------------- Hardware definitions -------------------------- */ - -/* PHY addresses for Kilauea & Haleakala; defined by hardware */ -enum { - kPHY0 = 1, - kPHY1 = 2, - kMaxEMACs = 2 -}; - -enum { - kMaxRxBuffers = 256, - kNXmtDescriptors = 256, /* May as well use all of them */ - kNoXmtBusy = 666 /* Arbitrary flag value outside 0..kNXmtDescriptors */ -}; - - -/*----------------------- Local variables for the driver -------------------------- */ - -typedef struct MALDescriptor { - uint16_t ctrlBits; - uint16_t adrDataSize; /* 4 bits of high address, 12 bits of length */ - uint8_t* ptr; -} MALDescriptor; - -typedef struct EMACLocals { - struct arpcom arpcom; - - /* Pointer to memory-mapped hardware */ - volatile EthernetRegisters_GP* EMAC; - - /* Transmit and receive task references */ - rtems_id rxDaemonTid; - rtems_id txDaemonTid; - int nRxBuffers; - int xmtFreeIndex; - int xmtBusyIndex; - MALDescriptor* xmtDescTable; - MALDescriptor* rcvDescTable; - - struct mbuf* rxMBufs[kMaxRxBuffers]; - struct mbuf* txMBufs[kNXmtDescriptors]; - - int phyAddr, /* PHY address */ - phyState, /* Last link state */ - phyOUI, /* Cached PHY type info */ - phyModel, - phyRev; - - /* Statistics */ - uint32_t rxInterrupts; - uint32_t rxOverrun; - uint32_t rxRunt; - uint32_t rxBadCRC; - uint32_t rxNonOctet; - uint32_t rxGiant; - - uint32_t txInterrupts; - - uint32_t txLostCarrier; - uint32_t txDeferred; - uint32_t txOneCollision; - uint32_t txMultiCollision; - uint32_t txTooManyCollision; - uint32_t txLateCollision; - uint32_t txUnderrun; - uint32_t txPoorSignal; -} EMACLocals; - - -EMACLocals gEmacs[kMaxEMACs]; - -int ppc405_emac_phy_adapt(EMACLocals* ep); - -/*----------------------------------- Globals --------------------------------------*/ - -/* - Pointers to the buffer descriptor tables used by the MAL. Tricky because they are both - read and written to by the MAL, which is unaware of the CPU data cache. As four 8-byte - descriptors fit into a single cache line this makes managing them in cached memory difficult. - Best solution is to label them as uncached using the MMU. This code assumes an appropriate - sized block stating at _enet_bdesc_base has been reserved by linkcmds and has been set up - with uncached MMU attrributes in bspstart.c */ - -LINKER_SYMBOL(_enet_bdesc_start); /* start of buffer descriptor space, from linkcmds */ -LINKER_SYMBOL(_enet_bdesc_end); /* top limit, from linkcmds */ - -static MALDescriptor* gTx0Descs = NULL; -static MALDescriptor* gRx0Descs = NULL; -static MALDescriptor* gTx1Descs = NULL; -static MALDescriptor* gRx1Descs = NULL; - -/*------------------------------------------------------------*/ - - -/* - * RTEMS event used by interrupt handler to signal driver tasks. - * This must not be any of the events used by the network task synchronization. - */ -#define INTERRUPT_EVENT RTEMS_EVENT_1 - -/* - * RTEMS event used to start transmit daemon. - * This must not be the same as INTERRUPT_EVENT. - */ -#define START_TRANSMIT_EVENT RTEMS_EVENT_2 - -#define _sync __asm__ volatile ("sync\n"::) - -#define kCacheLineMask (PPC_CACHE_ALIGNMENT - 1) - - -/*----------------------- IRQ handler glue -----------------------*/ - -static void InstallIRQHandler(rtems_irq_number id, - rtems_irq_hdl handler, - rtems_irq_enable turnOn, - rtems_irq_disable turnOff) -{ - rtems_irq_connect_data params; - - params.name = id; - params.hdl = handler; - params.on = turnOn; - params.off = turnOff; - params.isOn = NULL; - params.handle = NULL; - if (! BSP_install_rtems_irq_handler(¶ms)) - rtems_panic ("Can't install interrupt handler"); -} - -static void -NoAction(const rtems_irq_connect_data* unused) -{ - /* printf("NoAction %d\n",unused->name); */ -} - - -/*------------------------ PHY interface -------------------------- */ -/* This code recognises and works with the 88E1111 only. Other PHYs - will require appropriate adaptations to this code */ - -enum { - kPHYControl = 0, - kPHYReset = 0x8000, - kPHYStatus = 1, - kPHYLinkStatus = 0x0004, - kPHYID1 = 2, - kPHYID2 = 3, - kPHYAutoNegExp = 6, - kPHY1000BaseTCtl = 9, - kPHYExtStatus = 15, - - /* 88E1111 identification */ - kMarvellOUI = 0x5043, - k88E1111Part = 0x0C, - - /* 88E1111 register addresses */ - k8PHYSpecStatus = 17, - k8PHYSpeedShift = 14, - k8PHYDuplex = 0x2000, - k8PHYResolved = 0x0800, - k8PHYLinkUp = 0x0400, - k8IntStatus = 19, - k8IntEnable = 18, - k8AutoNegComplete = 0x0800, - k8LinkStateChanged = 0x0400, - k8ExtCtlReg = 20, - k8RcvTimingDelay = 0x0080, - k8XmtTimingDelay = 0x0002, - k8XmtEnable = 0x0001, - k8LEDCtlReg = 24, - k8ExtStatusReg = 27, -}; - - -static uint16_t ReadPHY(EMACLocals* ep, uint8_t reg) -{ - int n = 0; - uint32_t t; - - reg &= 0x1F; - - /* 405EX-specific! */ - while ((ep->EMAC->STAcontrol & keSTARun) != 0) - { ; } - ep->EMAC->STAcontrol = keSTADirectRd + (ep->phyAddr<<5) + reg; - ep->EMAC->STAcontrol |= keSTARun; - /* Wait for the read to complete, should take ~25usec */ - do { - t = ep->EMAC->STAcontrol; - if (++n > 200000) - rtems_panic("PHY read timed out"); - } while ((t & keSTARun) != 0); - - if (t & kSTAErr) - rtems_panic("PHY read failed"); - return t >> 16; -} - -static void WritePHY(EMACLocals* ep, uint8_t reg, uint16_t value) -{ - - reg &= 0x1F; - - /* 405EX-specific */ - while ((ep->EMAC->STAcontrol & keSTARun) != 0) - { ; } - ep->EMAC->STAcontrol = (value<<16) | keSTADirectWr | (ep->phyAddr<<5) | reg; - ep->EMAC->STAcontrol |= keSTARun; -} - -static void ResetPHY(EMACLocals* ep) -{ - int n; - - n = ReadPHY(ep, kPHYControl); - n |= kPHYReset; - WritePHY(ep, kPHYControl, n); - do { - rtems_task_wake_after( (rtems_bsdnet_ticks_per_second/20) + 1 ); - n = ReadPHY(ep, kPHYControl); - } while ((n & kPHYReset)!=0); -} - -enum { - kELinkUp = 0x80, - kELinkFullDuplex = 0x40, - kELinkSpeed10 = 0, - kELinkSpeed100 = 1, - kELinkSpeed1000 = 2, - kELinkSpeedMask = 3 -}; - -static int GetPHYLinkState(EMACLocals* ep) -/* Return link state (up/speed/duplex) as a set of flags */ -{ - int state, result; - - /* if (ep->phyOUI==kMarvellOUI) */ - result = 0; - state = ReadPHY(ep,k8PHYSpecStatus); - if ((state & k8PHYLinkUp) && (state & k8PHYResolved)) { - result |= kELinkUp; - if (state & k8PHYDuplex) result |= kELinkFullDuplex; - result |= ((state >> k8PHYSpeedShift) & 3); - } - return result; -} - -/*---------------------- PHY setup ------------------------*/ - - -static void InitPHY(EMACLocals* ep) -{ - int id,id2,n; - - id = ReadPHY(ep,kPHYID1); - id2 = ReadPHY(ep,kPHYID2); - ep->phyOUI = (id<<6) + (id2>>10); - ep->phyModel = (id2>>4) & 0x1F; - ep->phyRev = id2 & 0xF; - - #ifdef qDebug - printf("PHY %d maker $%X model %d revision %d\n",ep->phyAddr,ep->phyOUI,ep->phyModel,ep->phyRev); - #endif - - /* Test for PHYs that we understand; insert new PHY types initialisation here */ - if (ep->phyOUI == kMarvellOUI || ep->phyModel == k88E1111Part) { - /* 88E111-specific: Enable RxTx timing control, enable transmitter */ - n = ReadPHY(ep, k8ExtCtlReg); - n |= k8RcvTimingDelay + k8XmtTimingDelay + k8XmtEnable; - WritePHY(ep, k8ExtCtlReg, n); - - /* Set LED mode; Haleakala has LINK10 and TX LEDs only. Set up to do 100/1000 and link up/active*/ - WritePHY(ep, k8LEDCtlReg, 0x4109); - - /* Need to do a reset after fiddling with registers*/ - ResetPHY(ep); - } else - rtems_panic("Unknown PHY type"); -} - - -/*--------------------- Interrupt handlers for the MAL ----------------------------- */ - -static void -MALTXDone_handler(rtems_irq_hdl_param param) -{ - int n; - - n = PPC_DEVICE_CONTROL_REGISTER(MAL0_TXEOBISR); - if (n & kMALChannel0) { - gEmacs[0].txInterrupts++; - rtems_event_send (gEmacs[0].txDaemonTid, INTERRUPT_EVENT); - } - if (n & kMALChannel1) { - gEmacs[1].txInterrupts++; - rtems_event_send (gEmacs[1].txDaemonTid, INTERRUPT_EVENT); - } - PPC_SET_DEVICE_CONTROL_REGISTER(MAL0_TXEOBISR,n); -} - -static void -MALRXDone_handler (rtems_irq_hdl_param param) -{ - int n; - - n = PPC_DEVICE_CONTROL_REGISTER(MAL0_RXEOBISR); - if (n & kMALChannel0) { - gEmacs[0].rxInterrupts++; - rtems_event_send (gEmacs[0].rxDaemonTid, INTERRUPT_EVENT); - } - if (n & kMALChannel1) { - gEmacs[1].rxInterrupts++; - rtems_event_send (gEmacs[1].rxDaemonTid, INTERRUPT_EVENT); - } - PPC_SET_DEVICE_CONTROL_REGISTER(MAL0_RXEOBISR,n); /* Write back to clear interrupt */ -} - -/* These handlers are useful for debugging, but we don't actually need to process these interrupts */ - -static void -MALErr_handler (rtems_irq_hdl_param param) -{ - uint32_t errCause; - - errCause = PPC_DEVICE_CONTROL_REGISTER(MAL0_ESR); - /* Clear the error */ - PPC_SET_DEVICE_CONTROL_REGISTER(MAL0_ESR,errCause); -} - -static void -EMAC0Err_handler (rtems_irq_hdl_param param) -{ - uint32_t errCause; - - errCause = gEmacs[0].EMAC->intStatus; - /* Clear error by writing back */ - gEmacs[0].EMAC->intStatus = errCause; -} - -static void -EMAC1Err_handler (rtems_irq_hdl_param param) -{ - uint32_t errCause; - - errCause = gEmacs[1].EMAC->intStatus; - /* Clear error by writing back */ - gEmacs[1].EMAC->intStatus = errCause; -} - - -/*--------------------- Low-level hardware initialisation ----------------------------- */ - - - -static void -mal_initialise(void) -{ - uint32_t bdescbase; - int nBytes, ntables; - - /*------------------- Initialise the MAL for both channels ---------------------- */ - - PPC_SET_DEVICE_CONTROL_REGISTER(MAL0_CFG,kMALReset); - PPC_SET_DEVICE_CONTROL_REGISTER(MAL0_TXCARR, kMALChannel0 | kMALChannel1); - PPC_SET_DEVICE_CONTROL_REGISTER(MAL0_RXCARR, kMALChannel0 | kMALChannel1); - - /* Acquire MAL interrupts */ - InstallIRQHandler(BSP_UIC_MALTXEOB, MALTXDone_handler, NoAction, NoAction); - InstallIRQHandler(BSP_UIC_MALRXEOB, MALRXDone_handler, NoAction, NoAction); - InstallIRQHandler(BSP_UIC_MALSERR, MALErr_handler, NoAction, NoAction); - - /* Set up the buffer descriptor tables */ - bdescbase = (uint32_t)(_enet_bdesc_start); - nBytes = sizeof(MALDescriptor) * 256; - ntables = 4; - if (get_ppc_cpu_type() != PPC_405EX) { - /* The 405GP/GPr requires table bases to be 4K-aligned and can use two tx channels on one EMAC */ - nBytes = (nBytes + 0x0FFF) & ~0x0FFF; - bdescbase = (bdescbase + 0x0FFF) & ~0x0FFF; - ntables = 3; - } - - /* printf("Buffer descriptors at $%X..$%X, code from $%X\n",bdescbase, bdescbase + nBytes*ntables - 1,(uint32_t)&_text_start); */ - - /* Check that we have been given enough space and the buffers don't run past the enet_bdesc_end address */ - if (bdescbase + nBytes*ntables > (uint32_t)_enet_bdesc_end) - rtems_panic("Ethernet descriptor space insufficient!"); - - gTx0Descs = (MALDescriptor*)bdescbase; - gTx1Descs = (MALDescriptor*)(bdescbase + nBytes); - gRx0Descs = (MALDescriptor*)(bdescbase + nBytes*2); - /* Clear the buffer descriptor tables */ - memset(gTx0Descs, 0, sizeof(MALDescriptor)*256); - memset(gTx1Descs, 0, sizeof(MALDescriptor)*256); - memset(gRx0Descs, 0, sizeof(MALDescriptor)*256); - if (get_ppc_cpu_type() == PPC_405EX) { - gRx1Descs = (MALDescriptor*)(bdescbase + nBytes*3); - memset(gRx1Descs, 0, sizeof(MALDescriptor)*256); - } - - /* Set up the MAL registers */ - PPC_SET_DEVICE_CONTROL_REGISTER(MAL0_TXCTP0R,gTx0Descs); - PPC_SET_DEVICE_CONTROL_REGISTER(MAL0_TXCTP1R,gTx1Descs); - PPC_SET_DEVICE_CONTROL_REGISTER(MAL0_RXCTP0R,gRx0Descs); - PPC_SET_DEVICE_CONTROL_REGISTER(MAL0_RCBS0, (MCLBYTES-16)>>4); /* The hardware writes directly to the mbuf clusters, so it can write MCLBYTES */ - if (get_ppc_cpu_type() == PPC_405EX) { - PPC_SET_DEVICE_CONTROL_REGISTER(MAL0_CFG,kMALMedHiPriority + keMALRdMaxBurst32 + keMALWrMedHiPriority + keMALWrMaxBurst32 + - kMALLocksOPB + kMALLocksErrs + kMALCanBurst); - PPC_SET_DEVICE_CONTROL_REGISTER(MAL0_RXCTP1R,gRx1Descs); - PPC_SET_DEVICE_CONTROL_REGISTER(MAL0_RCBS1, (MCLBYTES-16)>>4); - PPC_SET_DEVICE_CONTROL_REGISTER(MAL0_IER,0xF7); /* Enable all MAL interrupts */ - } else { - PPC_SET_DEVICE_CONTROL_REGISTER(MAL0_CFG,kMALMedHiPriority + kMALLocksOPB + kMALLocksErrs + kMALCanBurst + kMALLatency8); - PPC_SET_DEVICE_CONTROL_REGISTER(MAL0_IER,0x1F); /* Enable all MAL interrupts */ - } -} - - - -#ifdef qDebug -static void printaddr(uint8_t* enetaddr) -{ - printf("%02X.%02X.%02X.%02X.%02X.%02X",enetaddr[0],enetaddr[1],enetaddr[2],enetaddr[3],enetaddr[4],enetaddr[5]); -} -#endif - -static bool gMALInited = FALSE; - -static void -ppc405_emac_initialize_hardware(EMACLocals* ep) -{ - - int n,mfr; - int unitnum = ep->arpcom.ac_if.if_unit; - - if (get_ppc_cpu_type() == PPC_405EX) { - /* PPC405EX: configure the RGMII bridge and clocks */ - RGMIIRegisters* rgmp = (RGMIIRegisters*)RGMIIAddress; - rgmp->FER = 0x00080055; /* Both EMACs RGMII */ - rgmp->SSR = 0x00000044; /* Both EMACs 1000Mbps */ - /* Configure the TX clock to be external */ - mfsdr(SDR0_MFR,mfr); - mfr &= ~0x0C000000; /* Switches both PHYs */ - mtsdr(SDR0_MFR,mfr); - } - - /* Reset the EMAC */ - n = 0; - ep->EMAC->mode0 = kEMACSoftRst; - while ((ep->EMAC->mode0 & kEMACSoftRst) != 0) - n++; /* Wait for it to complete */ - - /* Set up so we can talk to the PHY */ - ep->EMAC->mode1 = keEMACIPHYAddr4 | keEMACOPB100MHz; - - /* Initialise the PHY */ - InitPHY(ep); - - /* Initialise the MAL (once only) */ - if ( ! gMALInited) { - mal_initialise(); - gMALInited = TRUE; - } - - /* Set up IRQ handlers and enable the MAL channels for this port */ - if (unitnum==0) { - ep->xmtDescTable = gTx0Descs; - ep->rcvDescTable = gRx0Descs; - InstallIRQHandler(BSP_UIC_EMAC0, EMAC0Err_handler, NoAction, NoAction); - PPC_SET_DEVICE_CONTROL_REGISTER(MAL0_TXCASR,kMALChannel0); - PPC_SET_DEVICE_CONTROL_REGISTER(MAL0_RXCASR,kMALChannel0); - } else { - ep->xmtDescTable = gTx1Descs; - ep->rcvDescTable = gRx1Descs; - InstallIRQHandler(BSP_UIC_EMAC1, EMAC1Err_handler, NoAction, NoAction); - PPC_SET_DEVICE_CONTROL_REGISTER(MAL0_TXCASR,kMALChannel1); - PPC_SET_DEVICE_CONTROL_REGISTER(MAL0_RXCASR,kMALChannel1); - } - - /* The rest of the EMAC initialisation is done in emac_phy_adapt - when we know what the characteristics of the link are */ -} - - -/* EMAC second stage initialisation; talks to the PHY to find out how to do it. - Resets the EMAC if the PHY parameters need to be changed */ - -int ppc405_emac_phy_adapt(EMACLocals* ep) -{ - int linkState = GetPHYLinkState(ep); - int spd; - - if ((linkState & kELinkUp) && (linkState != ep->phyState)) { - /* Reset the EMAC and set registers according to PHY state */ - int i,n = 0; - uint32_t mode, rmode; - - ep->EMAC->mode0 = kEMACSoftRst; - while ((ep->EMAC->mode0 & kEMACSoftRst) != 0) - n++; /* Wait for it to complete */ - spd = linkState & kELinkSpeedMask; - mode = (spd<<22) | kgEMACTx0Multi; - if (get_ppc_cpu_type() == PPC_405EX) - mode |= (keEMAC16KRxFIFO | keEMAC16KTxFIFO | keEMACIPHYAddr4 | keEMACOPB100MHz ); - else - mode |= (kgEMAC4KRxFIFO | kgEMAC2KTxFIFO); - if (linkState & kELinkFullDuplex) - mode |= kEMACFullDuplex + kEMACDoFlowControl; - if ( (linkState & kELinkFullDuplex) || (spd > kELinkSpeed10) ) - mode |= kEMACIgnoreSQE; - - - if (spd==kELinkSpeed1000) { - /* Gigabit, so we support jumbo frames. Take appropriate measures: adjust the if_mtu */ - /* Note that we do this here because changing it later doesn't work very well : see - the SIOCSIFMTU discussion below */ - struct ifnet* ifp = &ep->arpcom.ac_if; - ifp->if_mtu = ETHERMTU_JUMBO; - mode |= keEMACJumbo; - } - - - ep->phyState = linkState; - ep->EMAC->mode1 = mode; - - /* Install 48-bit hardware address that we have been given */ - ep->EMAC->addrHi = (ep->arpcom.ac_enaddr[0]<<8) + ep->arpcom.ac_enaddr[1]; - ep->EMAC->addrLo = (ep->arpcom.ac_enaddr[2]<<24) + (ep->arpcom.ac_enaddr[3]<<16) - + (ep->arpcom.ac_enaddr[4]<<8) + (ep->arpcom.ac_enaddr[5] ); - - /* Set receive mode appropriately */ - rmode = kEMACStripPadding + kEMACStripFCS + kEMACBrcastRcv; - - if (ep->arpcom.ac_if.if_flags & IFF_PROMISC) rmode |= kEMACPromiscRcv; - else rmode |= kEMACIndivRcv; - if (get_ppc_cpu_type() == PPC_405EX) - rmode |= keEMACRxFIFOAFMax; - if ((ep->arpcom.ac_if.if_flags & IFF_ALLMULTI) != 0) - rmode |= kEMACPromMultRcv; - else if ((ep->arpcom.ac_if.if_flags & IFF_MULTICAST) != 0) - rmode |= kEMACMultcastRcv; - - ep->EMAC->rcvMode = rmode; - - if (get_ppc_cpu_type() == PPC_405EX) - for (i=0; i<8; i++) - ep->EMAC->e_groupHash[i] = 0; - else - for (i=0; i<4; i++) - ep->EMAC->g_groupHash[i] = 0; - - if (get_ppc_cpu_type() == PPC_405EX) { - /* Rcv low watermark, must be < mode1 Rcv FIFO size and > MAL burst length (default 64x4 bytes), 16-byte units - High watermark must be > low and < RcvFIFO size */ - ep->EMAC->rcvWatermarks = (16<<22) + (768<<6); - /* Xmt low request must be >= 17 FIFO entries, Xmt urgent must be > low */ - ep->EMAC->xmtMode1 = (17<<27) + (68<<14); /* TLR = 17, TUR = 68 */ - /* Xmt partial packet request threshold */ - ep->EMAC->xmtReqThreshold = ((1000>>2)-1) << 24; /* TRTR[TRT] = 1000 FIFO entries */ - } else { - ep->EMAC->rcvWatermarks = (15<<24) + (32<<8); - ep->EMAC->xmtReqThreshold = ((1448>>6)-1) << 26; /* TRT = 1024b */ - ep->EMAC->xmtMode1 = 0x40200000; /* TLR = 8w=32b, TUR=32w=128b */ - } - - ep->EMAC->IPGap = 8; - - /* Want EMAC interrupts for error logging & statistics */ - ep->EMAC->intEnable = kEMACIOverrun + kEMACIPause + kEMACIBadPkt + kEMACIRuntPkt + kEMACIShortEvt - + kEMACIAlignErr + kEMACIBadFCS + kEMACIOverSize + kEMACILLCRange + kEMACISQEErr - + kEMACITxErr; - - /* Start it running */ - ep->EMAC->mode0 = kEMACRxEnable + kEMACTxEnable; - return 0; - } else - return -1; -} - - -static void -ppc405_emac_disable(EMACLocals* ep) -/* Disable the EMAC channels so we stop running and processing interrupts */ -{ - ep->EMAC->mode0 = 0; -} - -static void -ppc405_emac_startxmt(EMACLocals* ep) -/* Start the transmitter: set TMR0[GNP] */ -{ - ep->EMAC->xmtMode0 = kEMACNewPacket0 + 7; /* *** TFAE value for EX */ -} - -static void ppc405_emac_watchdog(struct ifnet* ifp) -/* Called if a transmit stalls or when the interface is down. Check the PHY - until we get a valid link */ -{ - EMACLocals* ep = ifp->if_softc; - - if (ppc405_emac_phy_adapt(ep)==0) { - ep->arpcom.ac_if.if_flags |= IFF_RUNNING; - ifp->if_timer = 0; /* No longer needed */ - } else - ifp->if_timer = 1; /* reschedule, once a second */ -} - - - -/*----------------------- The transmit daemon/task -------------------------- */ - - -static void -FreeTxDescriptors(EMACLocals* ep) -/* Make descriptors and mbufs at xmtBusyIndex available for re-use if the packet that they */ -/* point at has all gone */ -{ - uint16_t scan, status; - - if (ep->xmtBusyIndex != kNoXmtBusy) { - scan = ep->xmtBusyIndex; - while (TRUE) { - /* Scan forward through the descriptors */ - status = ep->xmtDescTable[scan].ctrlBits; - if (++scan >= kNXmtDescriptors) - scan = 0; - /* If we find a ready (i.e not-yet-sent) descriptor, stop */ - if ((status & kMALTxReady) != 0) - break; - /* If we find a last descriptor, we can free all the buffers up to and including it */ - if ((status & kMALLast) != 0) { - /* End of packet and it has been sent or abandoned; advance xmtBusyIndex to */ - /* the next buffer and free buffers. */ - if ((status & kEMACErrMask) != 0) { - /* Transmit error of some kind */ - - if ((status & kEMACDeferred) != 0) - ep->txDeferred++; - if ((status & kEMACLostCarrier) != 0) - ep->txLostCarrier++; /* *** Perhaps more serious reaction needed... */ - - if ((status & kEMACLateColl) != 0) - ep->txLateCollision++; - if ((status & kEMACOneColl) != 0) - ep->txOneCollision++; - if ((status & kEMACMultColl) != 0) - ep->txMultiCollision++; - if ((status & kEMACCollFail) != 0) - ep->txTooManyCollision++; - - if ((status & kEMACSQEFail) != 0) - ep->txPoorSignal++; - if ((status & kEMACUnderrun) != 0) - ep->txUnderrun++; - } - while (ep->xmtBusyIndex != scan) { - m_free(ep->txMBufs[ep->xmtBusyIndex]); - if (++ep->xmtBusyIndex >= kNXmtDescriptors) ep->xmtBusyIndex = 0; - } - if (ep->xmtBusyIndex == ep->xmtFreeIndex) { - /* Nothing is busy */ - ep->xmtBusyIndex = kNoXmtBusy; - break; - } - } - } - } -} - - -static void -SendPacket (EMACLocals* ep, struct ifnet *ifp, struct mbuf *m) -/* Given a chain of mbufs, set up a transmit description and fire it off */ -{ - int nAdded, index, lastidx = -1, totalbytes; - uint16_t status; - struct mbuf* lastAdded; - - nAdded = 0; - totalbytes = 0; - lastAdded = NULL; - index = ep->xmtFreeIndex; - - /* Go through the chain of mbufs setting up descriptors for each */ - while (m != NULL) { - - if (m->m_len == 0) { - /* Can be empty: dispose and unlink from chain */ - m = m_free(m); - if (lastAdded!=NULL) lastAdded->m_next = m; - } else { - /* Make sure the mbuf has been written to memory */ - rtems_cache_flush_multiple_data_lines(mtod (m, void *), m->m_len); - /* If there are no descriptors available wait until there are */ - while (index == ep->xmtBusyIndex) { - rtems_event_set events; - ifp->if_timer = 2; - /* Then check for free descriptors, followed by: */ - rtems_bsdnet_event_receive (INTERRUPT_EVENT, RTEMS_WAIT | RTEMS_EVENT_ANY, RTEMS_NO_TIMEOUT, &events); - FreeTxDescriptors(ep); - } - - /* Fill in a descriptor for this mbuf and record it */ - ep->txMBufs[index] = m; - ep->xmtDescTable[index].ptr = mtod (m, void *); - ep->xmtDescTable[index].adrDataSize = m->m_len; - /* Fill in ctrlBits as we go but don't mark the first one as ready yet */ - status = kEMACGenFCS + kEMACGenPad + kEMACRepSrcAddr; - if (nAdded > 0) - status |= kMALTxReady; - if (index==kNXmtDescriptors-1) - status |= kMALWrap; - ep->xmtDescTable[index].ctrlBits = status; - lastidx = index; - - totalbytes += m->m_len; - lastAdded = m; - m = m->m_next; - nAdded++; - - index += 1; - if (index==kNXmtDescriptors) - index = 0; - - if (nAdded==kNXmtDescriptors) - rtems_fatal_error_occurred(RTEMS_INTERNAL_ERROR); /* This is impossible, of course... */ - } - } - - _Assert( lastidx != -1 ); - - if (nAdded > 0) { - /* Done and we added some buffers */ - /* Label the last buffer and ask for an interrupt */ - ep->xmtDescTable[lastidx].ctrlBits |= kMALLast + kMALInterrupt; - /* Finally set the ready bit on the first buffer */ - ep->xmtDescTable[ep->xmtFreeIndex].ctrlBits |= kMALTxReady; - /* Make sure this has been written */ - _sync; - if (ep->xmtBusyIndex == kNoXmtBusy) - ep->xmtBusyIndex = ep->xmtFreeIndex; - ep->xmtFreeIndex = index; - /* Poke the EMAC to get it started (which may not be needed if its already running */ - ppc405_emac_startxmt(ep); - ifp->if_timer = 2; - } -} - -static void -ppc405_emac_txDaemon (void* param) -{ - EMACLocals* ep = param; - struct ifnet *ifp = &ep->arpcom.ac_if; - struct mbuf *m; - rtems_event_set events; - - ep->xmtFreeIndex = 0; - ep->xmtBusyIndex = kNoXmtBusy; - while (TRUE) { - /* Wait for someone wanting to transmit */ - rtems_bsdnet_event_receive (START_TRANSMIT_EVENT | INTERRUPT_EVENT, - RTEMS_EVENT_ANY | RTEMS_WAIT, - RTEMS_NO_TIMEOUT, - &events); - if (events & INTERRUPT_EVENT) - ifp->if_timer = 0; - /* Grab packets and send until empty */ - /* Note that this doesn't (at the time of writing, RTEMS 4.9.1), ever get asked to send more than - one header mbuf and one data mbuf cluster, regardless of the MTU. This is because sosend() in the FreeBSD - stack only passes one mbuf at a time across to tcp_send, which immediately sends it */ - while (TRUE) { - FreeTxDescriptors(ep); - IF_DEQUEUE(&ifp->if_snd, m); - if (m == NULL) - break; - SendPacket (ep, ifp, m); - } - ifp->if_flags &= ~IFF_OACTIVE; - } -} - -/*----------------------- The receive daemon/task -------------------------- */ - -static void -MakeRxBuffer(EMACLocals* ep, int index) -{ - struct mbuf* m; - - /* Allocate an mbuf, wait if necessary, label as dynamic data, start of record */ - MGETHDR (m, M_WAIT, MT_DATA); - /* Allocate a cluster buffer to this mbuf, waiting if necessary */ - MCLGET (m, M_WAIT); - /* Set up reference to the interface the packet will be received on */ - m->m_pkthdr.rcvif = &ep->arpcom.ac_if; - ep->rxMBufs[index] = m; - ep->rcvDescTable[index].ptr = mtod (m, uint8_t*); - ep->rcvDescTable[index].adrDataSize = 0x0EEE; /* Precaution */ - if (index==ep->nRxBuffers-1) - ep->rcvDescTable[index].ctrlBits = kMALRxEmpty + kMALInterrupt + kMALWrap; - else - ep->rcvDescTable[index].ctrlBits = kMALRxEmpty + kMALInterrupt; -} - - - -static void -ppc405_emac_rxDaemon (void* param) -{ - EMACLocals* ep = param; - int index,n,mdex; - struct mbuf* m; - struct mbuf* mstart = NULL; - struct mbuf* mlast = NULL; - struct ifnet* ifp; - struct ether_header* eh = NULL; - rtems_event_set events; - - /* Startup : allocate a bunch of receive buffers and point the descriptor table entries at them */ - ifp = &ep->arpcom.ac_if; - index = 0; - while (index < ep->nRxBuffers) { - MakeRxBuffer(ep,index); - index += 1; - } - index = 0; - mdex = 0; - - /* Loop waiting for frames to arrive */ - while (TRUE) { - rtems_bsdnet_event_receive (INTERRUPT_EVENT, - RTEMS_WAIT | RTEMS_EVENT_ANY, - RTEMS_NO_TIMEOUT, - &events); - while ((ep->rcvDescTable[index].ctrlBits & kMALRxEmpty) == 0) { - /* Got a frame */ - uint16_t flags = ep->rcvDescTable[index].ctrlBits; - if ((flags & kEMACErrMask) != 0) { - /* It has errors. Update statistics */ - if ((flags & kEMACOverrun) != 0) - ep->rxOverrun++; - if ((flags & kEMACRuntPkt) != 0) - ep->rxRunt++; - if ((flags & kEMACBadFCS) != 0) - ep->rxBadCRC++; - if ((flags & kEMACAlignErr) != 0) - ep->rxNonOctet++; - if ((flags & kEMACPktLong) != 0) - ep->rxGiant++; - /* and reset descriptor to empty */ - - /* No need to get new mbufs, just reset */ - ep->rcvDescTable[index].adrDataSize = 0x0EEE; - if (index==ep->nRxBuffers-1) - ep->rcvDescTable[index].ctrlBits = kMALRxEmpty + kMALInterrupt + kMALWrap; - else - ep->rcvDescTable[index].ctrlBits = kMALRxEmpty + kMALInterrupt; - - } else { - /* Seems to be OK. Invalidate cache over the size we received */ - n = ep->rcvDescTable[index].adrDataSize & 0x0FFF; - m = ep->rxMBufs[index]; - rtems_cache_invalidate_multiple_data_lines(m->m_data, (n + kCacheLineMask) & ~kCacheLineMask); - - /* Consider copying small packets out of the cluster into m_pktdat to save clusters? */ - m->m_len = n; - - /* Jumbo packets will span multiple mbufs; chain them together and submit when we get the last one */ - if (flags & kMALRxFirst) { - /* First mbuf in the packet */ - if (mstart!=NULL) - rtems_panic("first, no last"); - - /* Adjust the mbuf pointers to skip the header and set eh to point to it */ - m->m_len -= sizeof(struct ether_header); - m->m_pkthdr.len = m->m_len; - eh = mtod (m, struct ether_header *); - m->m_data += sizeof(struct ether_header); - mstart = m; - mlast = m; - mdex = index; - } else { - /* Chain onto mstart: add length to pkthdr.len */ - if (mstart == NULL) - rtems_panic("last, no first"); - - mstart->m_pkthdr.len += n; - m->m_flags &= ~M_PKTHDR; - mlast->m_next = m; - mlast = m; - } - - if (flags & kMALLast) { - /* Last mbuf in the packet: pass base of the chain to a higher level */ - ether_input (ifp, eh, mstart); - - /* ether_input took the chain, set up new mbufs in the slots we used */ - mdex -= 1; - do { - if (++mdex==ep->nRxBuffers) mdex = 0; - MakeRxBuffer(ep,mdex); - } while (mdex != index); - mstart = NULL; - mlast = NULL; - eh = NULL; - } - } - index += 1; - if (index == ep->nRxBuffers) index = 0; - } - } -} - -/*----------- Vectored routines called through the driver struct ------------------ */ - -static void ppc405_emac_init (void* p) -/* Initialise the hardware, create and start the transmit and receive tasks */ -{ - char txName[] = "ETx0"; - char rxName[] = "ERx0"; - - EMACLocals* ep = (EMACLocals*)p; - if (ep->txDaemonTid == 0) { - ppc405_emac_initialize_hardware(ep); - rxName[3] += ep->phyAddr; - ep->rxDaemonTid = rtems_bsdnet_newproc (rxName, 4096, ppc405_emac_rxDaemon, ep); - txName[3] += ep->phyAddr; - ep->txDaemonTid = rtems_bsdnet_newproc (txName, 4096, ppc405_emac_txDaemon, ep); - } - /* Only set IFF_RUNNING if the PHY is ready. If not set the watchdog timer running so we check it */ - if ( GetPHYLinkState(ep) & kELinkUp ) - ep->arpcom.ac_if.if_flags |= IFF_RUNNING; - else - ep->arpcom.ac_if.if_timer = 1; -} - -static void ppc405_emac_start(struct ifnet *ifp) -/* Send a packet: send an event to the transmit task, waking it up */ -{ - EMACLocals* ep = ifp->if_softc; - rtems_event_send (ep->txDaemonTid, START_TRANSMIT_EVENT); - ifp->if_flags |= IFF_OACTIVE; -} - -static void ppc405_emac_stop (EMACLocals* ep) -{ - uint32_t mask; - - mask = 0x80000000 >> ep->arpcom.ac_if.if_unit; - PPC_SET_DEVICE_CONTROL_REGISTER(MAL0_TXCARR,mask); - PPC_SET_DEVICE_CONTROL_REGISTER(MAL0_RXCARR,mask); - ppc405_emac_disable(ep); - /* *** delete daemons, or do they exit themselves? */ - ep->arpcom.ac_if.if_flags &= ~IFF_RUNNING; -} - -#ifdef qDebug -static void ppc405_emac_stats (EMACLocals* ep) -{ - - printf (" Rx Interrupts:%-8lu", ep->rxInterrupts); - printf (" Giant:%-8lu", ep->rxGiant); - printf (" Runt:%-8lu\n", ep->rxRunt); - printf (" Non-octet:%-8lu", ep->rxNonOctet); - printf (" Bad CRC:%-8lu", ep->rxBadCRC); - printf (" Overrun:%-8lu\n", ep->rxOverrun); - - printf (" Tx Interrupts:%-8lu", ep->txInterrupts); - printf (" Long deferral:%-8lu", ep->txDeferred); - printf (" No Carrier:%-8lu\n", ep->txLostCarrier); - printf (" Late collision:%-8lu", ep->txLateCollision); - printf (" One collision:%-8lu", ep->txOneCollision); - printf (" Many collisions:%-8lu\n", ep->txMultiCollision); - printf ("Excess collisions:%-8lu", ep->txTooManyCollision); - printf (" Underrun:%-8lu", ep->txUnderrun); - printf (" Poor signal:%-8lu\n", ep->txPoorSignal); -} -#endif - -static int UpdateMulticast(EMACLocals* ep) -{ - /* Traverse list of multicast addresses and update hardware hash filter. This is just a work-reduction */ - /* step; the filter uses a hash of the hardware address and therefore doesn't catch all unwanted packets */ - /* We have to do other checks in software. */ - /* 405GP/GPr has 4x16-bit hash registers, 405EX/EXr has 8x32-bit */ - - struct ether_multi* enm; - struct ether_multistep step; - uint32_t hash; - - #ifdef qMultiDebug - printf("\nMulticast etheraddrs:\n"); - #endif - - ETHER_FIRST_MULTI(step, &ep->arpcom, enm); - while (enm != NULL) { - - /* *** Doesn't implement ranges */ - - hash = ether_crc32_be( (uint8_t*)&enm->enm_addrlo, sizeof(enm->enm_addrlo) ); - if (get_ppc_cpu_type() == PPC_405EX) { - hash >>= 24; /* Upper 8 bits, split 3/5 */ - /* This has been experimentally verified against the hardware */ - ep->EMAC->e_groupHash[7-(hash>>5)] |= (1 << (hash & 0x1F)); - } else { - hash >>= 26; /* Upper 6 bits, split 2/4 */ - /* This has not been checked */ - ep->EMAC->g_groupHash[3-(hash>>6)] |= (1 << (hash & 0xF)); - } - - #ifdef qMultiDebug - printf(" "); - printaddr(enm->enm_addrlo); - printf(" = bit %d",hash); - if (memcmp(&enm->enm_addrlo, &enm->enm_addrhi, 6) != 0) { - printf(" - "); - printaddr(enm->enm_addrhi); - printf(" [not supported]"); - } - printf("\n"); - #endif - - ETHER_NEXT_MULTI(step, enm); - } - #ifdef qMultiDebug - { - int i; - printf(" Grouphash is "); - for (i=0; i<8; i++) - printf("%08X:",(int)ep->EMAC->e_groupHash[i]); - printf("\n"); - } - #endif - return 0; -} - - -static int ppc405_emac_ioctl (struct ifnet *ifp, ioctl_command_t command, caddr_t data) -{ - int error = 0; - EMACLocals* ep = ifp->if_softc; - struct ifreq* reqP = (struct ifreq *) data; - - switch (command) { - - case SIOCSIFFLAGS: - switch (ifp->if_flags & (IFF_UP | IFF_RUNNING)) { - case IFF_RUNNING: - ppc405_emac_stop(ep); - break; - - case IFF_UP: - ppc405_emac_init(ep); - break; - - case IFF_UP | IFF_RUNNING: - ppc405_emac_stop(ep); - ppc405_emac_init(ep); - break; - - default: - break; - } - break; - - case SIOCADDMULTI: { - error = ether_addmulti( reqP, &ep->arpcom); - if (error==ENETRESET) - error = UpdateMulticast(ep); - } break; - - case SIOCDELMULTI: - error = ether_delmulti( (struct ifreq *) data, &ep->arpcom); - if (error==ENETRESET) - error = UpdateMulticast(ep); - break; - - case SIOCSIFMTU: { - /* Note that this may not do what you want; setting the interface MTU doesn't touch the route MTUs, - and new routes are sometimes made by cloning old ones. So this won't change the MTU to known hosts - and may not change the MTU to new ones either... */ - int max; - if ( get_ppc_cpu_type() == PPC_405EX && (ep->EMAC->mode1 & keEMACJumbo) != 0 ) - max = ETHER_MAX_LEN_JUMBO; - else - max = ETHER_MAX_LEN; - if (reqP->ifr_mtu > max - ETHER_HDR_LEN - ETHER_CRC_LEN) - error = EINVAL; - else - ifp->if_mtu = reqP->ifr_mtu; - } break; - - case SIO_RTEMS_SHOW_STATS: - #ifdef qDebug - ppc405_emac_stats(ep); - #endif - break; - - default: - /* Not handled here, pass to generic */ - error = ether_ioctl(ifp,command,data); - break; - } - - #ifdef qDebug - if (error != 0) - printf("--- Ethernet ioctl %d failed %d\n",(int)command,error); - #endif - - return error; -} - - -/*----------------------- External attach function -------------------------- - * - * This is the one function we are required to define in here: declared in bsp.h - * as RTEMS_BSP_NETWORK_DRIVER_ATTACH and called from rtems_bsdnet_attach - * -*/ - -int -rtems_emac_driver_attach(struct rtems_bsdnet_ifconfig* config, int attaching) -{ - int unitNumber, nUnits; - char* unitName; - struct ifnet* ifp; - EMACLocals* ep; - - if (attaching==0) { - printk ("EMAC: driver cannot be detached.\n"); - return 0; - } - - nUnits = 1; - if (get_ppc_cpu_type()==PPC_405EX && get_ppc_cpu_revision() > 0x1474) - nUnits = 2; /* PPC405EX has two interfaces, EXr has one */ - - unitNumber = rtems_bsdnet_parse_driver_name (config, &unitName); - if (unitNumber < 0 || unitNumber > nUnits-1) { - printk ("EMAC: bad unit number %d.\n",unitNumber); - return 0; - } - - ep = &gEmacs[unitNumber]; - - if (get_ppc_cpu_type()==PPC_405EX) { - if (unitNumber==0) ep->EMAC = (EthernetRegisters_EX*)EMAC0EXAddress; - else ep->EMAC = (EthernetRegisters_GP*)EMAC1EXAddress; - } else - ep->EMAC = (EthernetRegisters_GP*)EMAC0GPAddress; - - ifp = &ep->arpcom.ac_if; - if (ifp->if_softc != NULL) { - printk ("EMAC: driver already in use.\n"); - return 0; - } - ifp->if_softc = ep; - - if (config->hardware_address == 0) - rtems_panic("No Ethernet MAC address specified!"); - memcpy (ep->arpcom.ac_enaddr, config->hardware_address, ETHER_ADDR_LEN); - - ifp->if_name = unitName; - ifp->if_unit = unitNumber; - - if (config->mtu != 0) - ifp->if_mtu = config->mtu; - else - ifp->if_mtu = ETHERMTU; /* May be adjusted later by ppc405_emac_phy_adapt() */ - - ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; - if (ifp->if_snd.ifq_maxlen == 0) - ifp->if_snd.ifq_maxlen = ifqmaxlen; - ifp->if_init = &ppc405_emac_init; - ifp->if_ioctl = ppc405_emac_ioctl; - ifp->if_start = ppc405_emac_start; - ifp->if_output = ether_output; - ifp->if_watchdog = ppc405_emac_watchdog; - ifp->if_timer = 0; - - if (config->rbuf_count != 0) { - if (config->rbuf_count > 256) ep->nRxBuffers = 256; - else ep->nRxBuffers = config->rbuf_count; - } else - ep->nRxBuffers = nmbclusters/2; - - ep->phyAddr = unitNumber+1; - ep->phyState = 0; - - #ifdef qDebug - printf("\n Setting up EMAC %d of %d\n",unitNumber+1,nUnits); - printf(" MAC address is "); - printaddr(ep->arpcom.ac_enaddr); - printf(" MHLEN = %d, MINCLSIZE = %d MCLBYTES = %d\n",MHLEN,MINCLSIZE,MCLBYTES); - printf(" ticks/sec = %d, usec/tick = %d\n", rtems_bsdnet_ticks_per_second, rtems_bsdnet_microseconds_per_tick); - #endif - - if_attach (ifp); - ether_ifattach (ifp); - - return 1; -} - |