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authorJoel Sherrill <joel.sherrill@OARcorp.com>2005-04-28 16:17:39 +0000
committerJoel Sherrill <joel.sherrill@OARcorp.com>2005-04-28 16:17:39 +0000
commit27d619b86bd3ea6a36c8d3258ac6cba06b22a6e6 (patch)
tree676f2c9228a668ad9e8cdebc4fc10866204459da /c/src/lib/libbsp/powerpc/ppcn_60x/network/amd79c970.c
parent2005-04-28 Jennifer Averett <jennifer.averett@oarcorp.com> (diff)
downloadrtems-27d619b86bd3ea6a36c8d3258ac6cba06b22a6e6.tar.bz2
2005-04-28 Joel Sherrill <joel@OARcorp.com>
* acinclude.m4: Remove dmv177 and ppcn_60x. * dmv177/.cvsignore, dmv177/ChangeLog, dmv177/Makefile.am, dmv177/QUIRKS, dmv177/README, dmv177/README.net, dmv177/STATUS, dmv177/bsp_specs, dmv177/cable.doc, dmv177/configure.ac, dmv177/times, dmv177/clock/clock.c, dmv177/console/conscfg.c, dmv177/console/debugio.c, dmv177/include/.cvsignore, dmv177/include/bsp.h, dmv177/include/dmv170.h, dmv177/include/tm27.h, dmv177/scv64/scv64.c, dmv177/sonic/dmvsonic.c, dmv177/start/start.S, dmv177/startup/bspclean.c, dmv177/startup/bspstart.c, dmv177/startup/genpvec.c, dmv177/startup/linkcmds, dmv177/startup/setvec.c, dmv177/startup/vmeintr.c, dmv177/timer/timer.c, dmv177/tod/todcfg.c, ppcn_60x/.cvsignore, ppcn_60x/ChangeLog, ppcn_60x/Makefile.am, ppcn_60x/README, ppcn_60x/STATUS, ppcn_60x/bsp_specs, ppcn_60x/configure.ac, ppcn_60x/clock/clock.c, ppcn_60x/console/config.c, ppcn_60x/console/console.c, ppcn_60x/console/console.h, ppcn_60x/console/debugio.c, ppcn_60x/console/i8042.c, ppcn_60x/console/i8042_p.h, ppcn_60x/console/i8042vga.c, ppcn_60x/console/i8042vga.h, ppcn_60x/console/ns16550cfg.c, ppcn_60x/console/ns16550cfg.h, ppcn_60x/console/vga.c, ppcn_60x/console/vga_p.h, ppcn_60x/console/z85c30cfg.c, ppcn_60x/console/z85c30cfg.h, ppcn_60x/include/.cvsignore, ppcn_60x/include/bsp.h, ppcn_60x/include/extisrdrv.h, ppcn_60x/include/nvram.h, ppcn_60x/include/pci.h, ppcn_60x/include/tm27.h, ppcn_60x/network/amd79c970.c, ppcn_60x/network/amd79c970.h, ppcn_60x/nvram/ds1385.h, ppcn_60x/nvram/mk48t18.h, ppcn_60x/nvram/nvram.c, ppcn_60x/nvram/prepnvr.h, ppcn_60x/nvram/stk11c68.h, ppcn_60x/pci/pci.c, ppcn_60x/start/start.S, ppcn_60x/startup/bspclean.c, ppcn_60x/startup/bspstart.c, ppcn_60x/startup/bsptrap.S, ppcn_60x/startup/genpvec.c, ppcn_60x/startup/linkcmds, ppcn_60x/startup/rtems-ctor.cc, ppcn_60x/startup/setvec.c, ppcn_60x/startup/spurious.c, ppcn_60x/startup/swap.c, ppcn_60x/timer/timer.c, ppcn_60x/tod/cmos.h, ppcn_60x/tod/tod.c, ppcn_60x/universe/universe.c, ppcn_60x/vectors/README, ppcn_60x/vectors/align_h.S, ppcn_60x/vectors/vectors.S: Removed.
Diffstat (limited to 'c/src/lib/libbsp/powerpc/ppcn_60x/network/amd79c970.c')
-rw-r--r--c/src/lib/libbsp/powerpc/ppcn_60x/network/amd79c970.c1010
1 files changed, 0 insertions, 1010 deletions
diff --git a/c/src/lib/libbsp/powerpc/ppcn_60x/network/amd79c970.c b/c/src/lib/libbsp/powerpc/ppcn_60x/network/amd79c970.c
deleted file mode 100644
index c09bf2a1d5..0000000000
--- a/c/src/lib/libbsp/powerpc/ppcn_60x/network/amd79c970.c
+++ /dev/null
@@ -1,1010 +0,0 @@
-/*
- * COPYRIGHT (c) 1998 by Radstone Technology
- *
- *
- * THIS FILE IS PROVIDED TO YOU, THE USER, "AS IS", WITHOUT WARRANTY OF ANY
- * KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK
- * AS TO THE QUALITY AND PERFORMANCE OF ALL CODE IN THIS FILE IS WITH YOU.
- *
- * You are hereby granted permission to use, copy, modify, and distribute
- * this file, provided that this notice, plus the above copyright notice
- * and disclaimer, appears in all copies. Radstone Technology will provide
- * no support for this code.
- *
- */
-/*
- * RTEMS/KA9Q driver for PC-NET
- */
-#include <bsp.h>
-#include <rtems/error.h>
-#include <ka9q/rtems_ka9q.h>
-#include <ka9q/global.h>
-#include <ka9q/enet.h>
-#include <ka9q/iface.h>
-#include <ka9q/netuser.h>
-#include <ka9q/trace.h>
-#include <ka9q/commands.h>
-
-#include <pci.h>
-#include "amd79c970.h"
-
-/*
- * Number of PC-NETs supported by this driver
- */
-#define NPCNETDRIVER 1
-
-/*
- * Default number of buffer descriptors set aside for this driver.
- * The number of transmit buffer descriptors has to be quite large
- * since a single frame often uses four or more buffer descriptors.
- *
- * Set the number of Tx and Rx buffers, using Log_2(# buffers).
- */
-#define LANCE_LOG2_TX_BUFFERS 4
-#define LANCE_LOG2_RX_BUFFERS 4
-#define TX_RING_SIZE (1 << (LANCE_LOG2_TX_BUFFERS))
-#define TX_RING_MOD_MASK (TX_RING_SIZE - 1)
-#define TX_RING_LEN_BITS ((LANCE_LOG2_TX_BUFFERS) << 4)
-#define RX_RING_SIZE (1 << (LANCE_LOG2_RX_BUFFERS))
-#define RX_RING_MOD_MASK (RX_RING_SIZE - 1)
-#define RX_RING_LEN_BITS ((LANCE_LOG2_RX_BUFFERS) << 4)
-
-/*
- * RTEMS event used by interrupt handler to signal daemons.
- * This must *not* be the same event used by the KA9Q task synchronization.
- */
-#define INTERRUPT_EVENT RTEMS_EVENT_1
-
-/*
- * Receive buffer size -- Allow for a full ethernet packet plus a pointer
- */
-#define ETHPKT_SIZE 1520
-#define RBUF_SIZE (ETHPKT_SIZE + sizeof (struct iface *))
-
-/*
- * LANCE Register Access Macros
- */
-#define PCNET_IO_RD32(dp, reg, value) \
- inport_32(&dp->pPCNet->u.dwio.##reg, value)
-#define PCNET_IO_WR32(dp, reg, value) \
- outport_32(&dp->pPCNet->u.dwio.##reg, value)
-
-/*
- * LANCE Register Access Macros
- */
-#define RD_CSR32(dp, index, value) \
- PCNET_IO_WR32(dp, rap, index); \
- PCNET_IO_RD32(dp, rdp, value)
-
-#define WR_CSR32(dp, index, value) \
- PCNET_IO_WR32(dp, rap, index); \
- PCNET_IO_WR32(dp, rdp, value)
-
-#define RD_BCR32(dp, index, value) \
- PCNET_IO_WR32(dp, rap, index); \
- PCNET_IO_RD32(dp, bdp, value)
-
-#define WR_BCR32(dp, index, value) \
- PCNET_IO_WR32(dp, rap, index); \
- PCNET_IO_WR32(dp, bdp, value)
-
-/*
- * Hardware-specific storage
- *
- * Note that the enetInitBlk field must be aligned to a 16 byte
- * boundary
- */
-typedef struct amd79c970Context {
- rmde_t rxBdBase[RX_RING_SIZE];
- tmde_t txBdBase[TX_RING_SIZE];
- initblk_t initBlk;
- pc_net_t *pPCNet;
- uint32_t ulIntVector;
- struct mbuf **rxMbuf;
- struct mbuf **txMbuf;
- int rxBdCount;
- int txBdCount;
- int txBdHead;
- int txBdTail;
- int txBdActiveCount;
- struct iface *iface;
- rtems_id txWaitTid;
-
- /*
- * Statistics
- */
- unsigned long rxInterrupts;
- unsigned long rxNotFirst;
- unsigned long rxNotLast;
- unsigned long rxGiant;
- unsigned long rxNonOctet;
- unsigned long rxRunt;
- unsigned long rxBadCRC;
- unsigned long rxOverrun;
- unsigned long rxCollision;
- unsigned long rxDiscarded;
-
- unsigned long txInterrupts;
- unsigned long txDeferred;
- unsigned long txHeartbeat;
- unsigned long txLateCollision;
- unsigned long txRetryLimit;
- unsigned long txUnderrun;
- unsigned long txLostCarrier;
- unsigned long txRawWait;
-} amd79c970Context_t;
-static amd79c970Context_t *pAmd79c970Context[NPCNETDRIVER];
-
-/*
- * PC-NET interrupt handler
- */
-static rtems_isr
-amd79c970_isr (rtems_vector_number v)
-{
- uint32_t ulCSR0, ulCSR4, ulCSR5;
- amd79c970Context_t *dp;
- int i;
-
- for(i=0; i<NPCNETDRIVER; i++)
- {
- dp=pAmd79c970Context[i];
- if(dp->ulIntVector==v)
- {
- RD_CSR32(dp, CSR0, ulCSR0);
- if(ulCSR0 & CSR0_RINT)
- {
- /*
- * We have recieve data
- */
- dp->rxInterrupts++;
- rtems_event_send(
- dp->iface->rxproc,
- INTERRUPT_EVENT);
- }
-
- if(ulCSR0 & CSR0_TINT)
- {
- /*
- * Data tranmitted or error
- */
- dp->txInterrupts++;
- if(dp->txWaitTid)
- {
- rtems_event_send(
- dp->txWaitTid,
- INTERRUPT_EVENT);
- }
- }
-
- if((ulCSR0 & CSR0_INTR) &&
- !(ulCSR0 & (CSR0_RINT | CSR0_TINT)))
- {
- /*
- * Many possible sources
- */
- RD_CSR32(dp, CSR4, ulCSR4);
- RD_CSR32(dp, CSR5, ulCSR5);
- DEBUG_puts("CSR0=");
- DEBUG_puth(ulCSR0);
- DEBUG_puts(", CSR4=");
- DEBUG_puth(ulCSR4);
- DEBUG_puts(", CSR5=");
- DEBUG_puth(ulCSR5);
- DEBUG_puts("\n\r");
- /*
- * Clear it
- */
- WR_CSR32(dp, CSR4, ulCSR4);
- WR_CSR32(dp, CSR5, ulCSR5);
- }
-
- /*
- * Clear interrupts
- */
- ulCSR0&=CSR0_BABL | CSR0_CERR | CSR0_MISS |
- CSR0_MERR | CSR0_RINT | CSR0_TINT | CSR0_IENA;
- WR_CSR32(dp, CSR0, ulCSR0);
-
- RD_CSR32(dp, CSR0, ulCSR0);
- }
- }
-}
-
-/*
- * Initialize the ethernet hardware
- */
-static boolean
-amd79c970_initialize_hardware (int instance, int broadcastFlag)
-{
- amd79c970Context_t *dp;
- struct mbuf *bp;
- int i;
- uint8_t ucPCIBusCount;
- uint8_t ucBusNumber;
- uint8_t ucSlotNumber;
- uint32_t ulDeviceID;
- uint32_t ulBAR0;
- uint8_t ucIntVector;
- uint32_t ulInitClkPCIAddr;
- uint32_t ulAPROM;
- uint32_t ulCSR0;
-
- ucPCIBusCount=BusCountPCI();
-
- /*
- * Scan the available busses for instance of hardware
- */
- i=0;
-
- dp=pAmd79c970Context[instance];
- dp->pPCNet=(pc_net_t *)NULL;
-
- for(ucBusNumber=0;
- (ucBusNumber<ucPCIBusCount) && (dp->pPCNet==(pc_net_t *)NULL);
- ucBusNumber++)
- {
- for(ucSlotNumber=0;ucSlotNumber<PCI_MAX_DEVICES;ucSlotNumber++)
- {
- PCIConfigRead32(ucBusNumber,
- ucSlotNumber,
- 0,
- PCI_CONFIG_VENDOR_LOW,
- &ulDeviceID);
- if(ulDeviceID!=PCI_ID(0x1022, 0x2000))
- {
- continue;
- }
-
- /*
- * We've found a PC-NET controller
- */
- if(i++<instance)
- {
- continue;
- }
-
- /*
- * Read base address
- */
- PCIConfigRead32(ucBusNumber,
- ucSlotNumber,
- 0,
- PCI_CONFIG_BAR_0,
- &ulBAR0);
- dp->pPCNet=(pc_net_t *)(ulBAR0&~PCI_ADDRESS_IO_SPACE);
-
- /*
- * Read interrupt vector
- */
- PCIConfigRead8(ucBusNumber,
- ucSlotNumber,
- 0,
- PCI_CONFIG_INTERRUPTLINE,
- &ucIntVector);
- dp->ulIntVector=PPCN_60X_IRQ_PCI(ucIntVector);
-
- /*
- * Ensure that device is enabled
- */
- PCIConfigWrite16(ucBusNumber,
- ucSlotNumber,
- 0,
- PCI_CONFIG_COMMAND,
- PCI_ENABLE_IO_SPACE |
- PCI_ENABLE_BUS_MASTER);
- break;
- }
- }
-
- if(dp->pPCNet==(pc_net_t *)NULL)
- {
- return(FALSE);
- }
-
- /*
- * Read the ethernet number
- */
- if(!dp->iface->hwaddr)
- {
- dp->iface->hwaddr=mallocw (EADDR_LEN);
- PCNET_IO_RD32(dp, aprom[0], ulAPROM);
- for(i=0;i<4;i++)
- {
- dp->iface->hwaddr[i]=(ulAPROM>>(i*8))&0xff;
- }
- PCNET_IO_RD32(dp, aprom[1], ulAPROM);
- for(i=0;i<2;i++)
- {
- dp->iface->hwaddr[i+4]=(ulAPROM>>(i*8))&0xff;
- }
- }
-
- /*
- * Allocate mbuf pointers
- */
- dp->rxMbuf=mallocw (dp->rxBdCount * sizeof(*dp->rxMbuf));
- dp->txMbuf=mallocw (dp->txBdCount * sizeof(*dp->txMbuf));
-
- /*
- * Allocate space for incoming packets
- */
- for(i=0; i<dp->rxBdCount; i++)
- {
- dp->rxMbuf[i]=bp=ambufw (RBUF_SIZE);
- bp->data += sizeof (struct iface *);
- dp->rxBdBase[i].rmde_addr=
- Swap32((uint32_t)bp->data+PCI_SYS_MEM_BASE);
- dp->rxBdBase[i].rmde_bcnt=
- Swap16(-(bp->size-sizeof (struct iface *)));
- dp->rxBdBase[i].rmde_flags=Swap16(RFLG_OWN);
- }
-
- /*
- * Set up transmit buffer descriptors
- */
- for(i=0; i<dp->txBdCount; i++)
- {
- dp->txBdBase[i].tmde_status=Swap16(TST_STP | TST_ENP);
- dp->txBdBase[i].tmde_error=0;
- dp->txMbuf[i]=NULL;
- }
-
- /*
- * Initialise initblk
- */
- if(broadcastFlag)
- {
- dp->initBlk.ib_mode=0;
- }
- else
- {
- dp->initBlk.ib_mode=Swap16(CSR15_DRCVBC);
- }
-
- /*
- * Set the receive descriptor ring length
- */
- dp->initBlk.ib_rlen=RX_RING_LEN_BITS;
- /*
- * Set the receive descriptor ring address
- */
- dp->initBlk.ib_rdra=Swap32((uint32_t)&dp->rxBdBase[0]+
- PCI_SYS_MEM_BASE);
-
- /*
- * Set the transmit descriptor ring length
- */
- dp->initBlk.ib_tlen=TX_RING_LEN_BITS;
- /*
- * Set the tranmit descriptor ring address
- */
- dp->initBlk.ib_tdra=Swap32((uint32_t)&dp->txBdBase[0]+
- PCI_SYS_MEM_BASE);
-
- for(i=0;i<6;i++)
- {
- dp->initBlk.ib_padr[i]=dp->iface->hwaddr[i];
- }
-
- /*
- * Ensure that we are in DWIO mode
- */
- PCNET_IO_WR32(dp, rdp, 0);
-
- WR_CSR32(dp, 58,CSR58_PCISTYLE);
-
- WR_CSR32(dp, CSR3,
- CSR3_BABLM | CSR3_MERRM | CSR3_IDONM | CSR3_DXSUFLO);
-
- WR_CSR32(dp, CSR4,
- CSR4_APADXMIT | CSR4_MFCOM | CSR4_RCVCCOM |
- CSR4_TXSTRTM | CSR4_JABM);
-
- WR_CSR32(dp, CSR5, 0);
-
- ulInitClkPCIAddr=(uint32_t)&dp->initBlk+PCI_SYS_MEM_BASE;
- /*
- * CSR2 must contain the high order 16 bits of the first word in
- * the initialization block
- */
- WR_CSR32(dp, CSR2, (ulInitClkPCIAddr >> 16) & 0xffff);
- /*
- * CSR1 must contain the low order 16 bits of the first word in
- * the initialization block
- */
- WR_CSR32(dp, CSR1, (ulInitClkPCIAddr & 0xffff));
-
- /*
- * Set up interrupts
- */
- set_vector(amd79c970_isr,
- dp->ulIntVector,
- instance);
-
- /*
- * Start the device
- */
- WR_CSR32(dp, CSR0, CSR0_INIT | CSR0_STRT);
-
- /*
- * Wait for 100mS for the device to initialise
- */
- for(i=0; i<100; i++)
- {
- RD_CSR32(dp, CSR0, ulCSR0);
- if(ulCSR0 & CSR0_IDON)
- {
- break;
- }
- rtems_ka9q_ppause(1); /* 1mS */
- }
- if(i >= 100)
- {
- return(FALSE);
- }
-
- /*
- * Enable interrupts
- */
- WR_CSR32(dp, CSR0, CSR0_IENA);
-
- dp->txBdHead=dp->txBdTail=0;
- dp->txBdActiveCount=0;
-
- return(TRUE);
-}
-
-/*
- * Soak up buffer descriptors that have been sent
- */
-static void
-amd79c970_retire_tx_bd (amd79c970Context_t *dp)
-{
- uint16_t status;
- uint32_t error;
- int i;
- int nRetired;
-
- i = dp->txBdTail;
- nRetired = 0;
- while((dp->txBdActiveCount != 0) &&
- (((status=Swap16(dp->txBdBase[i].tmde_status)) & TST_OWN)==0))
- {
- /*
- * See if anything went wrong
- */
- if(status & TST_ERR)
- {
- /*
- * Check for errors
- */
- error=Swap16(dp->txBdBase[i].tmde_error);
-
- if (error & TERR_LCOL)
- dp->txLateCollision++;
- if (error & TERR_RTRY)
- dp->txRetryLimit++;
- if (error & TERR_UFLO)
- dp->txUnderrun++;
- if (error & TERR_EXDEF)
- dp->txDeferred++;
- if (error & TERR_LCAR)
- dp->txLostCarrier++;
- }
- nRetired++;
- if (status & TST_ENP)
- {
- /*
- * A full frame has been transmitted.
- * Free all the associated buffer descriptors.
- */
- dp->txBdActiveCount -= nRetired;
- while (nRetired) {
- nRetired--;
- free_mbuf (&dp->txMbuf[dp->txBdTail]);
- if (++dp->txBdTail == dp->txBdCount)
- dp->txBdTail = 0;
- }
- }
- if (++i == dp->txBdCount)
- {
- i = 0;
- }
- }
-}
-
-/*
- * Send raw packet (caller provides header).
- * This code runs in the context of the interface transmit
- * task or in the context of the network task.
- */
-static int
-amd79c970_raw (struct iface *iface, struct mbuf **bpp)
-{
- amd79c970Context_t *dp;
- struct mbuf *bp;
- tmde_t *firstTxBd, *txBd;
- uint16_t status;
- int nAdded;
-
- dp = pAmd79c970Context[iface->dev];
-
- /*
- * Fill in some logging data
- */
- iface->rawsndcnt++;
- iface->lastsent = secclock ();
- dump (iface, IF_TRACE_OUT, *bpp);
-
- /*
- * It would not do to have two tasks active in the transmit
- * loop at the same time.
- * The blocking is simple-minded since the odds of two tasks
- * simultaneously attempting to use this code are low. The only
- * way that two tasks can try to run here is:
- * 1) Task A enters this code and ends up having to
- * wait for a transmit buffer descriptor.
- * 2) Task B gains control and tries to transmit a packet.
- * The RTEMS/KA9Q scheduling semaphore ensures that there
- * are no race conditions associated with manipulating the
- * txWaitTid variable.
- */
- if (dp->txWaitTid) {
- dp->txRawWait++;
- while (dp->txWaitTid)
- rtems_ka9q_ppause (10);
- }
-
- /*
- * Free up buffer descriptors
- */
- amd79c970_retire_tx_bd (dp);
-
- /*
- * Set up the transmit buffer descriptors.
- * No need to pad out short packets since the
- * hardware takes care of that automatically.
- * No need to copy the packet to a contiguous buffer
- * since the hardware is capable of scatter/gather DMA.
- */
- bp = *bpp;
- nAdded = 0;
- txBd = firstTxBd = dp->txBdBase + dp->txBdHead;
- for (;;) {
- /*
- * Wait for buffer descriptor to become available.
- */
- if ((dp->txBdActiveCount + nAdded) == dp->txBdCount) {
- /*
- * Find out who we are
- */
- if (dp->txWaitTid == 0)
- rtems_task_ident (0, 0, &dp->txWaitTid);
-
- /*
- * Wait for buffer descriptor to become available.
- * Note that the buffer descriptors are checked
- * *before* * entering the wait loop -- this catches
- * the possibility that a buffer descriptor became
- * available between the `if' above, and the clearing
- * of the event register.
- * Also, the event receive doesn't wait forever.
- * This is to catch the case where the transmitter
- * stops in the middle of a frame -- and only the
- * last buffer descriptor in a frame can generate
- * an interrupt.
- */
- amd79c970_retire_tx_bd (dp);
- while ((dp->txBdActiveCount + nAdded) == dp->txBdCount) {
- rtems_ka9q_event_receive (INTERRUPT_EVENT,
- RTEMS_WAIT|RTEMS_EVENT_ANY,
- 1 + 1000000/BSP_Configuration.microseconds_per_tick);
- amd79c970_retire_tx_bd (dp);
- }
- }
-
- /*
- * Fill in the buffer descriptor
- */
- txBd->tmde_addr=Swap32((uint32_t)bp->data+PCI_SYS_MEM_BASE);
- txBd->tmde_bcnt=Swap16(-bp->cnt);
- dp->txMbuf[dp->txBdHead] = bp;
-
- nAdded++;
- if (++dp->txBdHead == dp->txBdCount)
- {
- dp->txBdHead = 0;
- }
-
- /*
- * Set the transmit buffer status.
- * Break out of the loop if this mbuf is the last in the frame.
- */
- if ((bp = bp->next) == NULL) {
- if(txBd==firstTxBd)
- {
- /*
- * There is only one frame
- */
- txBd->tmde_status=Swap16(TST_OWN |
- TST_STP |
- TST_ENP);
- }
- else
- {
- /*
- * Mark the last buffer
- */
- txBd->tmde_status=Swap16(TST_OWN |
- TST_ENP);
- /*
- * Trigger the first transmit
- */
- firstTxBd->tmde_status=Swap16(TST_OWN |
- TST_STP);
- }
- /*
- * Sync instruction required to overcome the Grackle
- * stale data bug
- */
- asm volatile("sync");
- dp->txBdActiveCount += nAdded;
- break;
- }
- else if(txBd!=firstTxBd)
- {
- txBd->tmde_status = Swap16(TST_OWN);
- }
- txBd = dp->txBdBase + dp->txBdHead;
- }
-
- /*
- * Show that we've finished with the packet
- */
- dp->txWaitTid = 0;
- *bpp = NULL;
- return 0;
-}
-
-/*
- * PC-NET reader task
- */
-static void
-amd79c970_rx (int dev, void *p1, void *p2)
-{
- struct iface *iface=(struct iface *)p1;
- amd79c970Context_t *dp=(amd79c970Context_t *)p2;
- struct mbuf *bp;
- uint16_t status;
- rmde_t *rxBd;
- int rxBdIndex;
- int continuousCount;
-
- /*
- * Input packet handling loop
- */
- continuousCount=0;
- rxBdIndex=0;
-
- while(TRUE)
- {
- rxBd=&dp->rxBdBase[rxBdIndex];
-
- /*
- * Wait for packet if there's not one ready
- */
- if((status=Swap16(rxBd->rmde_flags)) & RFLG_OWN)
- {
- /*
- * Reset `continuous-packet' count
- */
- continuousCount=0;
-
- /*
- * Wait for packet
- * Note that the buffer descriptor is checked
- * *before* the event wait -- this catches the
- * possibility that a packet arrived between the
- * `if' above, and the clearing of the event register.
- */
- while ((status=Swap16(rxBd->rmde_flags)) & RFLG_OWN)
- {
- rtems_ka9q_event_receive (INTERRUPT_EVENT,
- RTEMS_WAIT|RTEMS_EVENT_ANY,
- RTEMS_NO_TIMEOUT);
- }
- }
-
- /*
- * Check that packet is valid
- */
- if((status & RFLG_ERR) ||
- ((status & (RFLG_STP|RFLG_ENP)) != (RFLG_STP|RFLG_ENP)))
- {
- /*
- * Something went wrong with the reception
- */
- if(!(status & RFLG_ENP))
- dp->rxNotLast++;
- if(!(status & RFLG_STP))
- dp->rxNotFirst++;
- if(status & RFLG_OFLO)
- dp->rxGiant++;
- if(status & RFLG_FRAM)
- dp->rxNonOctet++;
- if(status & RFLG_CRC)
- dp->rxBadCRC++;
- if(status & RFLG_BUFF)
- dp->rxOverrun++;
- }
- else
- {
- /*
- * Pass the packet up the chain
- * The mbuf count is reduced to remove
- * the frame check sequence at the end
- * of the packet.
- */
- bp=dp->rxMbuf[rxBdIndex];
- bp->cnt=Swap16(rxBd->rmde_mcnt) - sizeof (uint32);
- net_route (iface, &bp);
-
- /*
- * Give the network code a chance to digest the
- * packet. This guards against a flurry of
- * incoming packets (usually an ARP storm) from
- * using up all the available memory.
- */
- if(++continuousCount >= dp->rxBdCount)
- kwait_null ();
-
- /*
- * Allocate a new mbuf
- * FIXME: It seems to me that it would be better
- * if there were some way to limit number of mbufs
- * in use by this interface, but I don't see any
- * way of determining when the mbuf we pass up
- * is freed.
- */
- dp->rxMbuf[rxBdIndex]=bp=ambufw (RBUF_SIZE);
- bp->data += sizeof (struct iface *);
- rxBd->rmde_addr=Swap32(
- (uint32_t)bp->data+PCI_SYS_MEM_BASE);
- rxBd->rmde_bcnt=Swap16(
- -(bp->size-sizeof (struct iface *)));
- }
-
- /*
- * Reenable the buffer descriptor
- */
- rxBd->rmde_flags=Swap16(RFLG_OWN);
-
- /*
- * Move to next buffer descriptor
- */
- if(++rxBdIndex==dp->rxBdCount)
- rxBdIndex=0;
- }
-}
-
-/*
- * Shut down the interface
- * FIXME: This is a pretty simple-minded routine. It doesn't worry
- * about cleaning up mbufs, shutting down daemons, etc.
- */
-static int
-amd79c970_stop (struct iface *iface)
-{
- amd79c970Context_t *dp;
- uint32_t ulCSR0;
- int i;
-
- dp=pAmd79c970Context[iface->dev];
-
- /*
- * Stop the device
- */
- WR_CSR32(dp, CSR0, CSR0_STOP);
-
- /*
- * Wait for 100mS for the device to stop
- */
- for(i=0; i<100; i++)
- {
- RD_CSR32(dp, CSR0, ulCSR0);
- if(!(ulCSR0 & (CSR0_RXON | CSR0_TXON)))
- {
- break;
- }
- rtems_ka9q_ppause(1); /* 1mS */
- }
- if(i >= 100)
- {
- return(-1);
- }
-
- /*
- * Free up all the mbufs we've allocated
- */
- for(i=0; i<dp->rxBdCount; i++)
- {
- free_mbuf(&dp->rxMbuf[i]);
- }
-
- return 0;
-}
-
-/*
- * Show interface statistics
- */
-static void
-amd79c970_show (struct iface *iface)
-{
- int i;
-
- i=iface->dev;
-
- printf (" Rx Interrupts:%-8lu", pAmd79c970Context[i]->rxInterrupts);
- printf (" Not First:%-8lu", pAmd79c970Context[i]->rxNotFirst);
- printf (" Not Last:%-8lu\n", pAmd79c970Context[i]->rxNotLast);
- printf (" Giant:%-8lu", pAmd79c970Context[i]->rxGiant);
- printf (" Runt:%-8lu", pAmd79c970Context[i]->rxRunt);
- printf (" Non-octet:%-8lu\n", pAmd79c970Context[i]->rxNonOctet);
- printf (" Bad CRC:%-8lu", pAmd79c970Context[i]->rxBadCRC);
- printf (" Overrun:%-8lu", pAmd79c970Context[i]->rxOverrun);
- printf (" Collision:%-8lu\n", pAmd79c970Context[i]->rxCollision);
- printf (" Discarded:%-8lu\n", pAmd79c970Context[i]->rxDiscarded);
-
- printf (" Tx Interrupts:%-8lu", pAmd79c970Context[i]->txInterrupts);
- printf (" Deferred:%-8lu", pAmd79c970Context[i]->txDeferred);
- printf (" Missed Hearbeat:%-8lu\n", pAmd79c970Context[i]->txHeartbeat);
- printf (" No Carrier:%-8lu", pAmd79c970Context[i]->txLostCarrier);
- printf ("Retransmit Limit:%-8lu", pAmd79c970Context[i]->txRetryLimit);
- printf (" Late Collision:%-8lu\n", pAmd79c970Context[i]->txLateCollision);
- printf (" Underrun:%-8lu", pAmd79c970Context[i]->txUnderrun);
- printf (" Raw output wait:%-8lu\n", pAmd79c970Context[i]->txRawWait);
-}
-
-/*
- * Attach an PC-NET driver to the system
- * This is the only `extern' function in the driver.
- *
- * argv[0]: interface label, e.g., "amd79c970"
- * argv[1]: maximum transmission unit, bytes, e.g., "1500"
- * argv[2]: accept ("broadcast") or ignore ("nobroadcast") broadcast packets
- * Following arguments are optional, but if present, must appear in
- * the following order:
- * Following arguments are optional, but if Ethernet address is
- * specified, Internet address must also be specified.
- * ###.###.###.### -- IP address
- * ##:##:##:##:##:## -- Ethernet address
- */
-int
-rtems_ka9q_driver_attach (int argc, char *argv[], void *p)
-{
- struct iface *iface;
- struct amd79c970Context *dp;
- char *cp;
- int i;
- int argIndex;
- int broadcastFlag;
-
- /*
- * Find a free driver
- */
- for(i=0; i<NPCNETDRIVER; i++)
- {
- if(pAmd79c970Context[i]==NULL)
- break;
- }
- if(i==NPCNETDRIVER)
- {
- printf ("Too many PC-NET drivers.\n");
- return -1;
- }
- if(if_lookup (argv[0]) != NULL)
- {
- printf ("Interface %s already exists\n", argv[0]);
- return -1;
- }
-
- /*
- * Note that this structure must be aligned to a 16 byte boundary
- */
- pAmd79c970Context[i]=(amd79c970Context_t *)
- (((uint32_t)callocw(1,
- sizeof(amd79c970Context_t)+16)+16) & ~15);
- dp=pAmd79c970Context[i];
-
- /*
- * Create an interface descriptor
- */
- iface=callocw (1, sizeof *iface);
- iface->name=strdup (argv[0]);
- iface->mtu=atoi (argv[1]);
-
- /*
- * Select broadcast packet handling
- */
- cp=argv[2];
- if(strnicmp (cp, "broadcast", strlen (cp))==0)
- {
- broadcastFlag=1;
- }
- else if(strnicmp (cp, "nobroadcast", strlen (cp))==0)
- {
- broadcastFlag=0;
- }
- else {
- printf ("Argument `%s' is neither `broadcast' nor `nobroadcast'.\n", cp);
- return -1;
- }
- argIndex=3;
-
- /*
- * Set receive buffer descriptor count
- */
- dp->rxBdCount=RX_RING_SIZE;
-
- /*
- * Set transmit buffer descriptor count
- */
- dp->txWaitTid=0;
- dp->txBdCount=TX_RING_SIZE;
-
- /*
- * Set Internet address
- */
- if(argIndex<argc)
- iface->addr=resolve (argv[argIndex++]);
- else
- iface->addr=Ip_addr;
-
- /*
- * Set Ethernet address
- */
- if(argIndex<argc)
- {
- iface->hwaddr=mallocw (EADDR_LEN);
- gether (iface->hwaddr, argv[argIndex++]);
- }
-
- iface->dev=i;
- iface->raw=amd79c970_raw;
- iface->stop=amd79c970_stop;
- iface->show=amd79c970_show;
- dp->iface=iface;
- setencap (iface, "Ethernet");
-
- /*
- * Set up PC-NET hardware
- */
- if(!amd79c970_initialize_hardware (i, broadcastFlag))
- {
- printf ("Unable to initialize hardware for %s\n", argv[0]);
- return -1;
- }
-
- /*
- * Chain onto list of interfaces
- */
- iface->next=Ifaces;
- Ifaces=iface;
-
- /*
- * Start I/O daemons
- */
- cp=if_name (iface, " tx");
- iface->txproc=newproc (cp, 1024, if_tx, iface->dev, iface, NULL, 0);
- free (cp);
- cp=if_name (iface, " rx");
- iface->rxproc=newproc (cp, 1024, amd79c970_rx, iface->dev, iface, dp, 0);
- free (cp);
- return 0;
-}
-
-/*
- * FIXME: There should be an ioctl routine to allow things like
- * enabling/disabling reception of broadcast packets.
- */