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u-boot/arch/powerpc/cpu/mpc8260/ether_fcc.c
Joe Hershberger 1fd92db83d net: cosmetic: Fix var naming net <-> eth drivers 
Update the naming convention used in the network stack functions and
variables that Ethernet drivers use to interact with it.

This cleans up the temporary hacks that were added to this interface
along with the DM support.

This patch has a few remaining checkpatch.pl failures that would be out
of the scope of this patch to fix (drivers that are in gross violation
of checkpatch.pl).

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
Acked-by: Simon Glass <sjg@chromium.org>
2015-04-18 11:11:33 -06:00

1145 lines
28 KiB
C
Raw Blame History

/*
* MPC8260 FCC Fast Ethernet
*
* Copyright (c) 2000 MontaVista Software, Inc. Dan Malek (dmalek@jlc.net)
*
* (C) Copyright 2000 Sysgo Real-Time Solutions, GmbH <www.elinos.com>
* Marius Groeger <mgroeger@sysgo.de>
*
* SPDX-License-Identifier: GPL-2.0+
*/
/*
* MPC8260 FCC Fast Ethernet
* Basic ET HW initialization and packet RX/TX routines
*
* This code will not perform the IO port configuration. This should be
* done in the iop_conf_t structure specific for the board.
*
* TODO:
* add a PHY driver to do the negotiation
* reflect negotiation results in FPSMR
* look for ways to configure the board specific stuff elsewhere, eg.
* config_xxx.h or the board directory
*/
#include <common.h>
#include <malloc.h>
#include <asm/cpm_8260.h>
#include <mpc8260.h>
#include <command.h>
#include <config.h>
#include <net.h>
#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
#include <miiphy.h>
#endif
DECLARE_GLOBAL_DATA_PTR;
#if defined(CONFIG_ETHER_ON_FCC) && defined(CONFIG_CMD_NET)
static struct ether_fcc_info_s
{
int ether_index;
int proff_enet;
ulong cpm_cr_enet_sblock;
ulong cpm_cr_enet_page;
ulong cmxfcr_mask;
ulong cmxfcr_value;
}
ether_fcc_info[] =
{
#ifdef CONFIG_ETHER_ON_FCC1
{
0,
PROFF_FCC1,
CPM_CR_FCC1_SBLOCK,
CPM_CR_FCC1_PAGE,
CONFIG_SYS_CMXFCR_MASK1,
CONFIG_SYS_CMXFCR_VALUE1
},
#endif
#ifdef CONFIG_ETHER_ON_FCC2
{
1,
PROFF_FCC2,
CPM_CR_FCC2_SBLOCK,
CPM_CR_FCC2_PAGE,
CONFIG_SYS_CMXFCR_MASK2,
CONFIG_SYS_CMXFCR_VALUE2
},
#endif
#ifdef CONFIG_ETHER_ON_FCC3
{
2,
PROFF_FCC3,
CPM_CR_FCC3_SBLOCK,
CPM_CR_FCC3_PAGE,
CONFIG_SYS_CMXFCR_MASK3,
CONFIG_SYS_CMXFCR_VALUE3
},
#endif
};
/*---------------------------------------------------------------------*/
/* Maximum input DMA size. Must be a should(?) be a multiple of 4. */
#define PKT_MAXDMA_SIZE 1520
/* The FCC stores dest/src/type, data, and checksum for receive packets. */
#define PKT_MAXBUF_SIZE 1518
#define PKT_MINBUF_SIZE 64
/* Maximum input buffer size. Must be a multiple of 32. */
#define PKT_MAXBLR_SIZE 1536
#define TOUT_LOOP 1000000
#define TX_BUF_CNT 2
#ifdef __GNUC__
static char txbuf[TX_BUF_CNT][PKT_MAXBLR_SIZE] __attribute__ ((aligned(8)));
#else
#error "txbuf must be 64-bit aligned"
#endif
static uint rxIdx; /* index of the current RX buffer */
static uint txIdx; /* index of the current TX buffer */
/*
* FCC Ethernet Tx and Rx buffer descriptors.
* Provide for Double Buffering
* Note: PKTBUFSRX is defined in net.h
*/
typedef volatile struct rtxbd {
cbd_t rxbd[PKTBUFSRX];
cbd_t txbd[TX_BUF_CNT];
} RTXBD;
/* Good news: the FCC supports external BDs! */
#ifdef __GNUC__
static RTXBD rtx __attribute__ ((aligned(8)));
#else
#error "rtx must be 64-bit aligned"
#endif
static int fec_send(struct eth_device *dev, void *packet, int length)
{
int i;
int result = 0;
if (length <= 0) {
printf("fec: bad packet size: %d\n", length);
goto out;
}
for(i=0; rtx.txbd[txIdx].cbd_sc & BD_ENET_TX_READY; i++) {
if (i >= TOUT_LOOP) {
puts ("fec: tx buffer not ready\n");
goto out;
}
}
rtx.txbd[txIdx].cbd_bufaddr = (uint)packet;
rtx.txbd[txIdx].cbd_datlen = length;
rtx.txbd[txIdx].cbd_sc |= (BD_ENET_TX_READY | BD_ENET_TX_LAST |
BD_ENET_TX_WRAP);
for(i=0; rtx.txbd[txIdx].cbd_sc & BD_ENET_TX_READY; i++) {
if (i >= TOUT_LOOP) {
puts ("fec: tx error\n");
goto out;
}
}
#ifdef ET_DEBUG
printf("cycles: %d status: %04x\n", i, rtx.txbd[txIdx].cbd_sc);
#endif
/* return only status bits */
result = rtx.txbd[txIdx].cbd_sc & BD_ENET_TX_STATS;
out:
return result;
}
static int fec_recv(struct eth_device* dev)
{
int length;
for (;;)
{
if (rtx.rxbd[rxIdx].cbd_sc & BD_ENET_RX_EMPTY) {
length = -1;
break; /* nothing received - leave for() loop */
}
length = rtx.rxbd[rxIdx].cbd_datlen;
if (rtx.rxbd[rxIdx].cbd_sc & 0x003f) {
printf("fec: rx error %04x\n", rtx.rxbd[rxIdx].cbd_sc);
}
else {
/* Pass the packet up to the protocol layers. */
net_process_received_packet(net_rx_packets[rxIdx], length - 4);
}
/* Give the buffer back to the FCC. */
rtx.rxbd[rxIdx].cbd_datlen = 0;
/* wrap around buffer index when necessary */
if ((rxIdx + 1) >= PKTBUFSRX) {
rtx.rxbd[PKTBUFSRX - 1].cbd_sc = (BD_ENET_RX_WRAP | BD_ENET_RX_EMPTY);
rxIdx = 0;
}
else {
rtx.rxbd[rxIdx].cbd_sc = BD_ENET_RX_EMPTY;
rxIdx++;
}
}
return length;
}
static int fec_init(struct eth_device* dev, bd_t *bis)
{
struct ether_fcc_info_s * info = dev->priv;
int i;
volatile immap_t *immr = (immap_t *)CONFIG_SYS_IMMR;
volatile cpm8260_t *cp = &(immr->im_cpm);
fcc_enet_t *pram_ptr;
unsigned long mem_addr;
#if 0
mii_discover_phy();
#endif
/* 28.9 - (1-2): ioports have been set up already */
/* 28.9 - (3): connect FCC's tx and rx clocks */
immr->im_cpmux.cmx_uar = 0;
immr->im_cpmux.cmx_fcr = (immr->im_cpmux.cmx_fcr & ~info->cmxfcr_mask) |
info->cmxfcr_value;
/* 28.9 - (4): GFMR: disable tx/rx, CCITT CRC, Mode Ethernet */
immr->im_fcc[info->ether_index].fcc_gfmr =
FCC_GFMR_MODE_ENET | FCC_GFMR_TCRC_32;
/* 28.9 - (5): FPSMR: enable full duplex, select CCITT CRC for Ethernet */
immr->im_fcc[info->ether_index].fcc_fpsmr = CONFIG_SYS_FCC_PSMR | FCC_PSMR_ENCRC;
/* 28.9 - (6): FDSR: Ethernet Syn */
immr->im_fcc[info->ether_index].fcc_fdsr = 0xD555;
/* reset indeces to current rx/tx bd (see eth_send()/eth_rx()) */
rxIdx = 0;
txIdx = 0;
/* Setup Receiver Buffer Descriptors */
for (i = 0; i < PKTBUFSRX; i++)
{
rtx.rxbd[i].cbd_sc = BD_ENET_RX_EMPTY;
rtx.rxbd[i].cbd_datlen = 0;
rtx.rxbd[i].cbd_bufaddr = (uint)net_rx_packets[i];
}
rtx.rxbd[PKTBUFSRX - 1].cbd_sc |= BD_ENET_RX_WRAP;
/* Setup Ethernet Transmitter Buffer Descriptors */
for (i = 0; i < TX_BUF_CNT; i++)
{
rtx.txbd[i].cbd_sc = (BD_ENET_TX_PAD | BD_ENET_TX_LAST | BD_ENET_TX_TC);
rtx.txbd[i].cbd_datlen = 0;
rtx.txbd[i].cbd_bufaddr = (uint)&txbuf[i][0];
}
rtx.txbd[TX_BUF_CNT - 1].cbd_sc |= BD_ENET_TX_WRAP;
/* 28.9 - (7): initialise parameter ram */
pram_ptr = (fcc_enet_t *)&(immr->im_dprambase[info->proff_enet]);
/* clear whole structure to make sure all reserved fields are zero */
memset((void*)pram_ptr, 0, sizeof(fcc_enet_t));
/*
* common Parameter RAM area
*
* Allocate space in the reserved FCC area of DPRAM for the
* internal buffers. No one uses this space (yet), so we
* can do this. Later, we will add resource management for
* this area.
*/
mem_addr = CPM_FCC_SPECIAL_BASE + ((info->ether_index) * 64);
pram_ptr->fen_genfcc.fcc_riptr = mem_addr;
pram_ptr->fen_genfcc.fcc_tiptr = mem_addr+32;
/*
* Set maximum bytes per receive buffer.
* It must be a multiple of 32.
*/
pram_ptr->fen_genfcc.fcc_mrblr = PKT_MAXBLR_SIZE;
pram_ptr->fen_genfcc.fcc_rstate = (CPMFCR_GBL | CPMFCR_EB |
CONFIG_SYS_CPMFCR_RAMTYPE) << 24;
pram_ptr->fen_genfcc.fcc_rbase = (unsigned int)(&rtx.rxbd[rxIdx]);
pram_ptr->fen_genfcc.fcc_tstate = (CPMFCR_GBL | CPMFCR_EB |
CONFIG_SYS_CPMFCR_RAMTYPE) << 24;
pram_ptr->fen_genfcc.fcc_tbase = (unsigned int)(&rtx.txbd[txIdx]);
/* protocol-specific area */
pram_ptr->fen_cmask = 0xdebb20e3; /* CRC mask */
pram_ptr->fen_cpres = 0xffffffff; /* CRC preset */
pram_ptr->fen_retlim = 15; /* Retry limit threshold */
pram_ptr->fen_mflr = PKT_MAXBUF_SIZE; /* maximum frame length register */
/*
* Set Ethernet station address.
*
* This is supplied in the board information structure, so we
* copy that into the controller.
* So, far we have only been given one Ethernet address. We make
* it unique by setting a few bits in the upper byte of the
* non-static part of the address.
*/
#define ea eth_get_ethaddr()
pram_ptr->fen_paddrh = (ea[5] << 8) + ea[4];
pram_ptr->fen_paddrm = (ea[3] << 8) + ea[2];
pram_ptr->fen_paddrl = (ea[1] << 8) + ea[0];
#undef ea
pram_ptr->fen_minflr = PKT_MINBUF_SIZE; /* minimum frame length register */
/* pad pointer. use tiptr since we don't need a specific padding char */
pram_ptr->fen_padptr = pram_ptr->fen_genfcc.fcc_tiptr;
pram_ptr->fen_maxd1 = PKT_MAXDMA_SIZE; /* maximum DMA1 length */
pram_ptr->fen_maxd2 = PKT_MAXDMA_SIZE; /* maximum DMA2 length */
pram_ptr->fen_rfthr = 1;
pram_ptr->fen_rfcnt = 1;
#if 0
printf("pram_ptr->fen_genfcc.fcc_rbase %08lx\n",
pram_ptr->fen_genfcc.fcc_rbase);
printf("pram_ptr->fen_genfcc.fcc_tbase %08lx\n",
pram_ptr->fen_genfcc.fcc_tbase);
#endif
/* 28.9 - (8): clear out events in FCCE */
immr->im_fcc[info->ether_index].fcc_fcce = ~0x0;
/* 28.9 - (9): FCCM: mask all events */
immr->im_fcc[info->ether_index].fcc_fccm = 0;
/* 28.9 - (10-12): we don't use ethernet interrupts */
/* 28.9 - (13)
*
* Let's re-initialize the channel now. We have to do it later
* than the manual describes because we have just now finished
* the BD initialization.
*/
cp->cp_cpcr = mk_cr_cmd(info->cpm_cr_enet_page,
info->cpm_cr_enet_sblock,
0x0c,
CPM_CR_INIT_TRX) | CPM_CR_FLG;
do {
__asm__ __volatile__ ("eieio");
} while (cp->cp_cpcr & CPM_CR_FLG);
/* 28.9 - (14): enable tx/rx in gfmr */
immr->im_fcc[info->ether_index].fcc_gfmr |= FCC_GFMR_ENT | FCC_GFMR_ENR;
return 1;
}
static void fec_halt(struct eth_device* dev)
{
struct ether_fcc_info_s * info = dev->priv;
volatile immap_t *immr = (immap_t *)CONFIG_SYS_IMMR;
/* write GFMR: disable tx/rx */
immr->im_fcc[info->ether_index].fcc_gfmr &=
~(FCC_GFMR_ENT | FCC_GFMR_ENR);
}
int fec_initialize(bd_t *bis)
{
struct eth_device* dev;
int i;
for (i = 0; i < sizeof(ether_fcc_info) / sizeof(ether_fcc_info[0]); i++)
{
dev = (struct eth_device*) malloc(sizeof *dev);
memset(dev, 0, sizeof *dev);
sprintf(dev->name, "FCC%d",
ether_fcc_info[i].ether_index + 1);
dev->priv = &ether_fcc_info[i];
dev->init = fec_init;
dev->halt = fec_halt;
dev->send = fec_send;
dev->recv = fec_recv;
eth_register(dev);
#if (defined(CONFIG_MII) || defined(CONFIG_CMD_MII)) \
&& defined(CONFIG_BITBANGMII)
miiphy_register(dev->name,
bb_miiphy_read, bb_miiphy_write);
#endif
}
return 1;
}
#ifdef CONFIG_ETHER_LOOPBACK_TEST
#define ELBT_BUFSZ 1024 /* must be multiple of 32 */
#define ELBT_CRCSZ 4
#define ELBT_NRXBD 4 /* must be at least 2 */
#define ELBT_NTXBD 4
#define ELBT_MAXRXERR 32
#define ELBT_MAXTXERR 32
#define ELBT_CLSWAIT 1000 /* msec to wait for further input frames */
typedef
struct {
uint off;
char *lab;
}
elbt_prdesc;
typedef
struct {
uint _l, _f, m, bc, mc, lg, no, sh, cr, ov, cl;
uint badsrc, badtyp, badlen, badbit;
}
elbt_rxeacc;
static elbt_prdesc rxeacc_descs[] = {
{ offsetof(elbt_rxeacc, _l), "Not Last in Frame" },
{ offsetof(elbt_rxeacc, _f), "Not First in Frame" },
{ offsetof(elbt_rxeacc, m), "Address Miss" },
{ offsetof(elbt_rxeacc, bc), "Broadcast Address" },
{ offsetof(elbt_rxeacc, mc), "Multicast Address" },
{ offsetof(elbt_rxeacc, lg), "Frame Length Violation"},
{ offsetof(elbt_rxeacc, no), "Non-Octet Alignment" },
{ offsetof(elbt_rxeacc, sh), "Short Frame" },
{ offsetof(elbt_rxeacc, cr), "CRC Error" },
{ offsetof(elbt_rxeacc, ov), "Overrun" },
{ offsetof(elbt_rxeacc, cl), "Collision" },
{ offsetof(elbt_rxeacc, badsrc), "Bad Src Address" },
{ offsetof(elbt_rxeacc, badtyp), "Bad Frame Type" },
{ offsetof(elbt_rxeacc, badlen), "Bad Frame Length" },
{ offsetof(elbt_rxeacc, badbit), "Data Compare Errors" },
};
static int rxeacc_ndesc = sizeof (rxeacc_descs) / sizeof (rxeacc_descs[0]);
typedef
struct {
uint def, hb, lc, rl, rc, un, csl;
}
elbt_txeacc;
static elbt_prdesc txeacc_descs[] = {
{ offsetof(elbt_txeacc, def), "Defer Indication" },
{ offsetof(elbt_txeacc, hb), "Heartbeat" },
{ offsetof(elbt_txeacc, lc), "Late Collision" },
{ offsetof(elbt_txeacc, rl), "Retransmission Limit" },
{ offsetof(elbt_txeacc, rc), "Retry Count" },
{ offsetof(elbt_txeacc, un), "Underrun" },
{ offsetof(elbt_txeacc, csl), "Carrier Sense Lost" },
};
static int txeacc_ndesc = sizeof (txeacc_descs) / sizeof (txeacc_descs[0]);
typedef
struct {
uchar rxbufs[ELBT_NRXBD][ELBT_BUFSZ];
uchar txbufs[ELBT_NTXBD][ELBT_BUFSZ];
cbd_t rxbd[ELBT_NRXBD];
cbd_t txbd[ELBT_NTXBD];
enum { Idle, Running, Closing, Closed } state;
int proff, page, sblock;
uint clstime, nsent, ntxerr, nrcvd, nrxerr;
ushort rxerrs[ELBT_MAXRXERR], txerrs[ELBT_MAXTXERR];
elbt_rxeacc rxeacc;
elbt_txeacc txeacc;
} __attribute__ ((aligned(8)))
elbt_chan;
static uchar patbytes[ELBT_NTXBD] = {
0xff, 0xaa, 0x55, 0x00
};
static uint patwords[ELBT_NTXBD] = {
0xffffffff, 0xaaaaaaaa, 0x55555555, 0x00000000
};
#ifdef __GNUC__
static elbt_chan elbt_chans[3] __attribute__ ((aligned(8)));
#else
#error "elbt_chans must be 64-bit aligned"
#endif
#define CPM_CR_GRACEFUL_STOP_TX ((ushort)0x0005)
static elbt_prdesc epram_descs[] = {
{ offsetof(fcc_enet_t, fen_crcec), "CRC Errors" },
{ offsetof(fcc_enet_t, fen_alec), "Alignment Errors" },
{ offsetof(fcc_enet_t, fen_disfc), "Discarded Frames" },
{ offsetof(fcc_enet_t, fen_octc), "Octets" },
{ offsetof(fcc_enet_t, fen_colc), "Collisions" },
{ offsetof(fcc_enet_t, fen_broc), "Broadcast Frames" },
{ offsetof(fcc_enet_t, fen_mulc), "Multicast Frames" },
{ offsetof(fcc_enet_t, fen_uspc), "Undersize Frames" },
{ offsetof(fcc_enet_t, fen_frgc), "Fragments" },
{ offsetof(fcc_enet_t, fen_ospc), "Oversize Frames" },
{ offsetof(fcc_enet_t, fen_jbrc), "Jabbers" },
{ offsetof(fcc_enet_t, fen_p64c), "64 Octet Frames" },
{ offsetof(fcc_enet_t, fen_p65c), "65-127 Octet Frames" },
{ offsetof(fcc_enet_t, fen_p128c), "128-255 Octet Frames" },
{ offsetof(fcc_enet_t, fen_p256c), "256-511 Octet Frames" },
{ offsetof(fcc_enet_t, fen_p512c), "512-1023 Octet Frames" },
{ offsetof(fcc_enet_t, fen_p1024c), "1024-1518 Octet Frames"},
};
static int epram_ndesc = sizeof (epram_descs) / sizeof (epram_descs[0]);
/*
* given an elbt_prdesc array and an array of base addresses, print
* each prdesc down the screen with the values fetched from each
* base address across the screen
*/
static void
print_desc (elbt_prdesc descs[], int ndesc, uchar *bases[], int nbase)
{
elbt_prdesc *dp = descs, *edp = dp + ndesc;
int i;
printf ("%32s", "");
for (i = 0; i < nbase; i++)
printf (" Channel %d", i);
putc ('\n');
while (dp < edp) {
printf ("%-32s", dp->lab);
for (i = 0; i < nbase; i++) {
uint val = *(uint *)(bases[i] + dp->off);
printf (" %10u", val);
}
putc ('\n');
dp++;
}
}
/*
* return number of bits that are set in a value; value contains
* nbits (right-justified) bits.
*/
static uint __inline__
nbs (uint value, uint nbits)
{
uint cnt = 0;
#if 1
uint pos = sizeof (uint) * 8;
__asm__ __volatile__ ("\
mtctr %2\n\
1: rlwnm. %2,%1,%4,31,31\n\
beq 2f\n\
addi %0,%0,1\n\
2: subi %4,%4,1\n\
bdnz 1b"
: "=r"(cnt)
: "r"(value), "r"(nbits), "r"(cnt), "r"(pos)
: "ctr", "cc" );
#else
uint mask = 1;
do {
if (value & mask)
cnt++;
mask <<= 1;
} while (--nbits);
#endif
return (cnt);
}
static ulong
badbits (uchar *bp, int n, ulong pat)
{
ulong *lp, cnt = 0;
int nl;
while (n > 0 && ((ulong)bp & (sizeof (ulong) - 1)) != 0) {
uchar diff;
diff = *bp++ ^ (uchar)pat;
if (diff)
cnt += nbs ((ulong)diff, 8);
n--;
}
lp = (ulong *)bp;
nl = n / sizeof (ulong);
n -= nl * sizeof (ulong);
while (nl > 0) {
ulong diff;
diff = *lp++ ^ pat;
if (diff)
cnt += nbs (diff, 32);
nl--;
}
bp = (uchar *)lp;
while (n > 0) {
uchar diff;
diff = *bp++ ^ (uchar)pat;
if (diff)
cnt += nbs ((ulong)diff, 8);
n--;
}
return (cnt);
}
static inline unsigned short
swap16 (unsigned short x)
{
return (((x & 0xff) << 8) | ((x & 0xff00) >> 8));
}
/* broadcast is not an error - we send them like that */
#define BD_ENET_RX_ERRS (BD_ENET_RX_STATS & ~BD_ENET_RX_BC)
void
eth_loopback_test (void)
{
volatile immap_t *immr = (immap_t *)CONFIG_SYS_IMMR;
volatile cpm8260_t *cp = &(immr->im_cpm);
int c, nclosed;
ulong runtime, nmsec;
uchar *bases[3];
puts ("FCC Ethernet External loopback test\n");
eth_getenv_enetaddr("ethaddr", net_ethaddr);
/*
* global initialisations for all FCC channels
*/
/* 28.9 - (1-2): ioports have been set up already */
#if defined(CONFIG_SACSng)
/*
* Attention: this is board-specific
* 1, FCC2
*/
# define FCC_START_LOOP 1
# define FCC_END_LOOP 1
/*
* Attention: this is board-specific
* - FCC2 Rx-CLK is CLK13
* - FCC2 Tx-CLK is CLK14
*/
/* 28.9 - (3): connect FCC's tx and rx clocks */
immr->im_cpmux.cmx_uar = 0;
immr->im_cpmux.cmx_fcr = CMXFCR_RF2CS_CLK13|CMXFCR_TF2CS_CLK14;
#else
#error "eth_loopback_test not supported on your board"
#endif
puts ("Initialise FCC channels:");
for (c = FCC_START_LOOP; c <= FCC_END_LOOP; c++) {
elbt_chan *ecp = &elbt_chans[c];
volatile fcc_t *fcp = &immr->im_fcc[c];
volatile fcc_enet_t *fpp;
int i;
ulong addr;
/*
* initialise channel data
*/
printf (" %d", c);
memset ((void *)ecp, 0, sizeof (*ecp));
ecp->state = Idle;
switch (c) {
case 0: /* FCC1 */
ecp->proff = PROFF_FCC1;
ecp->page = CPM_CR_FCC1_PAGE;
ecp->sblock = CPM_CR_FCC1_SBLOCK;
break;
case 1: /* FCC2 */
ecp->proff = PROFF_FCC2;
ecp->page = CPM_CR_FCC2_PAGE;
ecp->sblock = CPM_CR_FCC2_SBLOCK;
break;
case 2: /* FCC3 */
ecp->proff = PROFF_FCC3;
ecp->page = CPM_CR_FCC3_PAGE;
ecp->sblock = CPM_CR_FCC3_SBLOCK;
break;
}
/*
* set up tx buffers and bds
*/
for (i = 0; i < ELBT_NTXBD; i++) {
cbd_t *bdp = &ecp->txbd[i];
uchar *bp = &ecp->txbufs[i][0];
bdp->cbd_bufaddr = (uint)bp;
/* room for crc */
bdp->cbd_datlen = ELBT_BUFSZ - ELBT_CRCSZ;
bdp->cbd_sc = BD_ENET_TX_READY | BD_ENET_TX_PAD | \
BD_ENET_TX_LAST | BD_ENET_TX_TC;
memset((void *)bp, patbytes[i], ELBT_BUFSZ);
net_set_ether(bp, net_bcast_ethaddr, 0x8000);
}
ecp->txbd[ELBT_NTXBD - 1].cbd_sc |= BD_ENET_TX_WRAP;
/*
* set up rx buffers and bds
*/
for (i = 0; i < ELBT_NRXBD; i++) {
cbd_t *bdp = &ecp->rxbd[i];
uchar *bp = &ecp->rxbufs[i][0];
bdp->cbd_bufaddr = (uint)bp;
bdp->cbd_datlen = 0;
bdp->cbd_sc = BD_ENET_RX_EMPTY;
memset ((void *)bp, 0, ELBT_BUFSZ);
}
ecp->rxbd[ELBT_NRXBD - 1].cbd_sc |= BD_ENET_RX_WRAP;
/*
* set up the FCC channel hardware
*/
/* 28.9 - (4): GFMR: disable tx/rx, CCITT CRC, Mode Ethernet */
fcp->fcc_gfmr = FCC_GFMR_MODE_ENET | FCC_GFMR_TCRC_32;
/* 28.9 - (5): FPSMR: fd, enet CRC, Promis, RMON, Rx SHort */
fcp->fcc_fpsmr = FCC_PSMR_FDE | FCC_PSMR_LPB | \
FCC_PSMR_ENCRC | FCC_PSMR_PRO | \
FCC_PSMR_MON | FCC_PSMR_RSH;
/* 28.9 - (6): FDSR: Ethernet Syn */
fcp->fcc_fdsr = 0xD555;
/* 29.9 - (7): initialise parameter ram */
fpp = (fcc_enet_t *)&(immr->im_dprambase[ecp->proff]);
/* clear whole struct to make sure all resv fields are zero */
memset ((void *)fpp, 0, sizeof (fcc_enet_t));
/*
* common Parameter RAM area
*
* Allocate space in the reserved FCC area of DPRAM for the
* internal buffers. No one uses this space (yet), so we
* can do this. Later, we will add resource management for
* this area.
*/
addr = CPM_FCC_SPECIAL_BASE + (c * 64);
fpp->fen_genfcc.fcc_riptr = addr;
fpp->fen_genfcc.fcc_tiptr = addr + 32;
/*
* Set maximum bytes per receive buffer.
* It must be a multiple of 32.
* buffers are in 60x bus memory.
*/
fpp->fen_genfcc.fcc_mrblr = PKT_MAXBLR_SIZE;
fpp->fen_genfcc.fcc_rstate = (CPMFCR_GBL | CPMFCR_EB) << 24;
fpp->fen_genfcc.fcc_rbase = (unsigned int)(&ecp->rxbd[0]);
fpp->fen_genfcc.fcc_tstate = (CPMFCR_GBL | CPMFCR_EB) << 24;
fpp->fen_genfcc.fcc_tbase = (unsigned int)(&ecp->txbd[0]);
/* protocol-specific area */
fpp->fen_cmask = 0xdebb20e3; /* CRC mask */
fpp->fen_cpres = 0xffffffff; /* CRC preset */
fpp->fen_retlim = 15; /* Retry limit threshold */
fpp->fen_mflr = PKT_MAXBUF_SIZE;/* max frame length register */
/*
* Set Ethernet station address.
*
* This is supplied in the board information structure, so we
* copy that into the controller.
* So, far we have only been given one Ethernet address. We use
* the same address for all channels
*/
fpp->fen_paddrh = (net_ethaddr[5] << 8) + net_ethaddr[4];
fpp->fen_paddrm = (net_ethaddr[3] << 8) + net_ethaddr[2];
fpp->fen_paddrl = (net_ethaddr[1] << 8) + net_ethaddr[0];
fpp->fen_minflr = PKT_MINBUF_SIZE; /* min frame len register */
/*
* pad pointer. use tiptr since we don't need
* a specific padding char
*/
fpp->fen_padptr = fpp->fen_genfcc.fcc_tiptr;
fpp->fen_maxd1 = PKT_MAXDMA_SIZE; /* max DMA1 length */
fpp->fen_maxd2 = PKT_MAXDMA_SIZE; /* max DMA2 length */
fpp->fen_rfthr = 1;
fpp->fen_rfcnt = 1;
/* 28.9 - (8): clear out events in FCCE */
fcp->fcc_fcce = ~0x0;
/* 28.9 - (9): FCCM: mask all events */
fcp->fcc_fccm = 0;
/* 28.9 - (10-12): we don't use ethernet interrupts */
/* 28.9 - (13)
*
* Let's re-initialize the channel now. We have to do it later
* than the manual describes because we have just now finished
* the BD initialization.
*/
cp->cp_cpcr = mk_cr_cmd (ecp->page, ecp->sblock, \
0x0c, CPM_CR_INIT_TRX) | CPM_CR_FLG;
do {
__asm__ __volatile__ ("eieio");
} while (cp->cp_cpcr & CPM_CR_FLG);
}
puts (" done\nStarting test... (Ctrl-C to Finish)\n");
/*
* Note: don't want serial output from here until the end of the
* test - the delays would probably stuff things up.
*/
clear_ctrlc ();
runtime = get_timer (0);
do {
nclosed = 0;
for (c = FCC_START_LOOP; c <= FCC_END_LOOP; c++) {
volatile fcc_t *fcp = &immr->im_fcc[c];
elbt_chan *ecp = &elbt_chans[c];
int i;
switch (ecp->state) {
case Idle:
/*
* set the channel Running ...
*/
/* 28.9 - (14): enable tx/rx in gfmr */
fcp->fcc_gfmr |= FCC_GFMR_ENT | FCC_GFMR_ENR;
ecp->state = Running;
break;
case Running:
/*
* (while Running only) check for
* termination of the test
*/
(void)ctrlc ();
if (had_ctrlc ()) {
/*
* initiate a "graceful stop transmit"
* on the channel
*/
cp->cp_cpcr = mk_cr_cmd (ecp->page, \
ecp->sblock, 0x0c, \
CPM_CR_GRACEFUL_STOP_TX) | \
CPM_CR_FLG;
do {
__asm__ __volatile__ ("eieio");
} while (cp->cp_cpcr & CPM_CR_FLG);
ecp->clstime = get_timer (0);
ecp->state = Closing;
}
/* fall through ... */
case Closing:
/*
* (while Running or Closing) poll the channel:
* - check for any non-READY tx buffers and
* make them ready
* - check for any non-EMPTY rx buffers and
* check that they were received correctly,
* adjust counters etc, then make empty
*/
for (i = 0; i < ELBT_NTXBD; i++) {
cbd_t *bdp = &ecp->txbd[i];
ushort sc = bdp->cbd_sc;
if ((sc & BD_ENET_TX_READY) != 0)
continue;
/*
* this frame has finished
* transmitting
*/
ecp->nsent++;
if (sc & BD_ENET_TX_STATS) {
ulong n;
/*
* we had an error on
* the transmission
*/
n = ecp->ntxerr++;
if (n < ELBT_MAXTXERR)
ecp->txerrs[n] = sc;
if (sc & BD_ENET_TX_DEF)
ecp->txeacc.def++;
if (sc & BD_ENET_TX_HB)
ecp->txeacc.hb++;
if (sc & BD_ENET_TX_LC)
ecp->txeacc.lc++;
if (sc & BD_ENET_TX_RL)
ecp->txeacc.rl++;
if (sc & BD_ENET_TX_RCMASK)
ecp->txeacc.rc++;
if (sc & BD_ENET_TX_UN)
ecp->txeacc.un++;
if (sc & BD_ENET_TX_CSL)
ecp->txeacc.csl++;
bdp->cbd_sc &= \
~BD_ENET_TX_STATS;
}
if (ecp->state == Closing)
ecp->clstime = get_timer (0);
/* make it ready again */
bdp->cbd_sc |= BD_ENET_TX_READY;
}
for (i = 0; i < ELBT_NRXBD; i++) {
cbd_t *bdp = &ecp->rxbd[i];
ushort sc = bdp->cbd_sc, mask;
if ((sc & BD_ENET_RX_EMPTY) != 0)
continue;
/* we have a new frame in this buffer */
ecp->nrcvd++;
mask = BD_ENET_RX_LAST|BD_ENET_RX_FIRST;
if ((sc & mask) != mask) {
/* somethings wrong here ... */
if (!(sc & BD_ENET_RX_LAST))
ecp->rxeacc._l++;
if (!(sc & BD_ENET_RX_FIRST))
ecp->rxeacc._f++;
}
if (sc & BD_ENET_RX_ERRS) {
ulong n;
/*
* we had some sort of error
* on the frame
*/
n = ecp->nrxerr++;
if (n < ELBT_MAXRXERR)
ecp->rxerrs[n] = sc;
if (sc & BD_ENET_RX_MISS)
ecp->rxeacc.m++;
if (sc & BD_ENET_RX_BC)
ecp->rxeacc.bc++;
if (sc & BD_ENET_RX_MC)
ecp->rxeacc.mc++;
if (sc & BD_ENET_RX_LG)
ecp->rxeacc.lg++;
if (sc & BD_ENET_RX_NO)
ecp->rxeacc.no++;
if (sc & BD_ENET_RX_SH)
ecp->rxeacc.sh++;
if (sc & BD_ENET_RX_CR)
ecp->rxeacc.cr++;
if (sc & BD_ENET_RX_OV)
ecp->rxeacc.ov++;
if (sc & BD_ENET_RX_CL)
ecp->rxeacc.cl++;
bdp->cbd_sc &= \
~BD_ENET_RX_ERRS;
}
else {
ushort datlen = bdp->cbd_datlen;
struct ethernet_hdr *ehp;
ushort prot;
int ours, tb, n, nbytes;
ehp = (struct ethernet_hdr *) \
&ecp->rxbufs[i][0];
ours = memcmp (ehp->et_src, \
net_ethaddr, 6);
prot = swap16 (ehp->et_protlen);
tb = prot & 0x8000;
n = prot & 0x7fff;
nbytes = ELBT_BUFSZ -
ETHER_HDR_SIZE -
ELBT_CRCSZ;
/* check the frame is correct */
if (datlen != ELBT_BUFSZ)
ecp->rxeacc.badlen++;
else if (!ours)
ecp->rxeacc.badsrc++;
else if (!tb || n >= ELBT_NTXBD)
ecp->rxeacc.badtyp++;
else {
ulong patword = \
patwords[n];
uint nbb;
nbb = badbits(
((uchar *)&ehp) +
ETHER_HDR_SIZE,
nbytes, patword);
ecp->rxeacc.badbit += \
nbb;
}
}
if (ecp->state == Closing)
ecp->clstime = get_timer (0);
/* make it empty again */
bdp->cbd_sc |= BD_ENET_RX_EMPTY;
}
if (ecp->state != Closing)
break;
/*
* (while Closing) check to see if
* waited long enough
*/
if (get_timer (ecp->clstime) >= ELBT_CLSWAIT) {
/* write GFMR: disable tx/rx */
fcp->fcc_gfmr &= \
~(FCC_GFMR_ENT | FCC_GFMR_ENR);
ecp->state = Closed;
}
break;
case Closed:
nclosed++;
break;
}
}
} while (nclosed < (FCC_END_LOOP - FCC_START_LOOP + 1));
runtime = get_timer (runtime);
if (runtime <= ELBT_CLSWAIT) {
printf ("Whoops! somehow elapsed time (%ld) is wrong (<= %d)\n",
runtime, ELBT_CLSWAIT);
return;
}
nmsec = runtime - ELBT_CLSWAIT;
printf ("Test Finished in %ldms (plus %dms close wait period)!\n\n",
nmsec, ELBT_CLSWAIT);
/*
* now print stats
*/
for (c = FCC_START_LOOP; c <= FCC_END_LOOP; c++) {
elbt_chan *ecp = &elbt_chans[c];
uint rxpps, txpps, nerr;
rxpps = (ecp->nrcvd * 1000) / nmsec;
txpps = (ecp->nsent * 1000) / nmsec;
printf ("Channel %d: %d rcvd (%d pps, %d rxerrs), "
"%d sent (%d pps, %d txerrs)\n\n", c,
ecp->nrcvd, rxpps, ecp->nrxerr,
ecp->nsent, txpps, ecp->ntxerr);
if ((nerr = ecp->nrxerr) > 0) {
ulong i;
printf ("\tFirst %d rx errs:", nerr);
for (i = 0; i < nerr; i++)
printf (" %04x", ecp->rxerrs[i]);
putc ('\n');
}
if ((nerr = ecp->ntxerr) > 0) {
ulong i;
printf ("\tFirst %d tx errs:", nerr);
for (i = 0; i < nerr; i++)
printf (" %04x", ecp->txerrs[i]);
putc ('\n');
}
}
puts ("Receive Error Counts:\n");
for (c = FCC_START_LOOP; c <= FCC_END_LOOP; c++)
bases[c] = (uchar *)&elbt_chans[c].rxeacc;
print_desc (rxeacc_descs, rxeacc_ndesc, bases, 3);
puts ("\nTransmit Error Counts:\n");
for (c = FCC_START_LOOP; c <= FCC_END_LOOP; c++)
bases[c] = (uchar *)&elbt_chans[c].txeacc;
print_desc (txeacc_descs, txeacc_ndesc, bases, 3);
puts ("\nRMON(-like) Counters:\n");
for (c = FCC_START_LOOP; c <= FCC_END_LOOP; c++)
bases[c] = (uchar *)&immr->im_dprambase[elbt_chans[c].proff];
print_desc (epram_descs, epram_ndesc, bases, 3);
}
#endif /* CONFIG_ETHER_LOOPBACK_TEST */
#endif
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