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Updates from Eric Norum. Changed CPU CFLAG and went to a common name

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for the network driver attach entry point.
This commit is contained in:
Joel Sherrill
1998-01-06 20:18:21 +00:00
parent 2872e0bb1c
commit 35a1ec9933
1 changed files with 116 additions and 154 deletions
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270
c/src/lib/libbsp/m68k/gen68360/network/network.c
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@@ -30,8 +30,9 @@
* The number of transmit buffer descriptors has to be quite large
* since a single frame often uses four or more buffer descriptors.
*/
#define RX_BD_COUNT 15
#define TX_BD_COUNT 12
#define RX_BUF_COUNT 15
#define TX_BUF_COUNT 4
#define TX_BD_PER_BUF 4
/*
* RTEMS event used by interrupt handler to signal daemons.
@@ -95,6 +96,7 @@ m360Enet_interrupt_handler (rtems_vector_number v)
*/
if ((m360.scc1.sccm & 0x8) && (m360.scc1.scce & 0x8)) {
m360.scc1.scce = 0x8;
m360.scc1.sccm &= ~0x8;
m360EnetDriver[0].rxInterrupts++;
rtems_event_send (m360EnetDriver[0].iface->rxproc, INTERRUPT_EVENT);
}
@@ -104,6 +106,7 @@ m360Enet_interrupt_handler (rtems_vector_number v)
*/
if ((m360.scc1.sccm & 0x12) && (m360.scc1.scce & 0x12)) {
m360.scc1.scce = 0x12;
m360.scc1.sccm &= ~0x12;
m360EnetDriver[0].txInterrupts++;
rtems_event_send (m360EnetDriver[0].txWaitTid, INTERRUPT_EVENT);
}
@@ -455,12 +458,6 @@ m360Enet_raw (struct iface *iface, struct mbuf **bpp)
*/
m360.scc1.scce = 0x12;
/*
* Unmask TXB (buffer transmitted) and
* TXE (transmitter error) events.
*/
m360.scc1.sccm |= 0x12;
/*
* Wait for buffer descriptor to become available.
* Note that the buffer descriptors are checked
@@ -468,7 +465,6 @@ m360Enet_raw (struct iface *iface, struct mbuf **bpp)
* 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
@@ -476,23 +472,16 @@ m360Enet_raw (struct iface *iface, struct mbuf **bpp)
*/
m360Enet_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);
m360Enet_retire_tx_bd (dp);
}
/*
* Unmask TXB (buffer transmitted) and
* TXE (transmitter error) events.
*/
m360.scc1.sccm |= 0x12;
/*
* Mask TXB and TXE events.
* This eliminates the load of interupts happening
* when the daemon is not interested.
*/
{
ISR_Level level;
_ISR_Disable (level);
m360.scc1.sccm &= ~0x12;
m360.scc1.scce = 0x12;
_ISR_Enable (level);
rtems_ka9q_event_receive (INTERRUPT_EVENT,
RTEMS_WAIT|RTEMS_EVENT_ANY,
RTEMS_NO_TIMEOUT);
m360Enet_retire_tx_bd (dp);
}
}
@@ -587,11 +576,6 @@ m360Enet_rx (int dev, void *p1, void *p2)
*/
m360.scc1.scce = 0x8;
/*
* Unmask RXF (Full frame received) event
*/
m360.scc1.sccm |= 0x8;
/*
* Wait for packet
* Note that the buffer descriptor is checked
@@ -600,24 +584,15 @@ m360Enet_rx (int dev, void *p1, void *p2)
* `if' above, and the clearing of the event register.
*/
while ((status = rxBd->status) & M360_BD_EMPTY) {
/*
* Unmask RXF (Full frame received) event
*/
m360.scc1.sccm |= 0x8;
rtems_ka9q_event_receive (INTERRUPT_EVENT,
RTEMS_WAIT|RTEMS_EVENT_ANY,
RTEMS_NO_TIMEOUT);
}
/*
* Mask RXF (Full frame received) event
* By doing so, we avoid the overhead of
* receive interupts happening while the receive
* daemon is busy elsewhere
*/
{
ISR_Level level;
_ISR_Disable (level);
m360.scc1.sccm &= ~0x8;
m360.scc1.scce = 0x8;
_ISR_Enable (level);
}
}
/*
@@ -757,20 +732,18 @@ m360Enet_show (struct iface *iface)
* Attach an SCC driver to the system
* This is the only `extern' function in the driver.
*
* argv[0]: interface label, e.g., "m360scc1"
* 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:
* rxbdcount ## -- Set number of receive buffer descriptors
* txbdcount ## -- Set number of transmit buffer descriptors
* Following arguments are optional, but if Ethernet address is
* specified, Internet address must also be specified.
* ###.###.###.### -- IP address
* ##:##:##:##:##:## -- Ethernet address
* argv[0]: interface label, e.g., "rtems"
* The remainder of the arguemnts are key/value pairs:
* mtu ## -- maximum transmission unit, default 1500
* broadcast y/n -- accept or ignore broadcast packets, default yes
* rbuf ## -- Set number of receive buffer descriptors
* rbuf ## -- Set number of transmit buffer descriptors
* ip ###.###.###.### -- IP address
* ether ##:##:##:##:##:## -- Ethernet address
* ether prom -- Get Ethernet address from bootstrap PROM
*/
int
m360Enet_attach (int argc, char *argv[], void *p)
rtems_ka9q_driver_attach (int argc, char *argv[], void *p)
{
struct iface *iface;
struct m360EnetDriver *dp;
@@ -778,6 +751,7 @@ m360Enet_attach (int argc, char *argv[], void *p)
int i;
int argIndex;
int broadcastFlag;
char cbuf[30];
/*
* Find a free driver
@@ -801,116 +775,104 @@ m360Enet_attach (int argc, char *argv[], void *p)
*/
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_BD_COUNT;
if (argIndex < (argc - 1)) {
cp = argv[argIndex];
if (strnicmp (argv[argIndex], "rxbdcount", strlen (cp)) == 0) {
dp->rxBdCount = atoi (argv[argIndex + 1]);
argIndex += 2;
}
}
/*
* Set transmit buffer descriptor count
* Set default values
*/
broadcastFlag = 1;
dp->txWaitTid = 0;
dp->txBdCount = TX_BD_COUNT;
if (argIndex < (argc - 1)) {
cp = argv[argIndex];
if (strnicmp (argv[argIndex], "txbdcount", strlen (cp)) == 0) {
dp->txBdCount = atoi (argv[argIndex + 1]);
argIndex += 2;
}
}
/*
* Set Internet address
*/
if (argIndex < argc)
iface->addr = resolve (argv[argIndex++]);
else
iface->addr = Ip_addr;
/*
* Set Ethernet address
*/
dp->rxBdCount = RX_BUF_COUNT;
dp->txBdCount = TX_BUF_COUNT * TX_BD_PER_BUF;
iface->mtu = 1500;
iface->addr = Ip_addr;
iface->hwaddr = mallocw (EADDR_LEN);
if (argIndex < argc) {
gether (iface->hwaddr, argv[argIndex++]);
}
else {
/*
* The first 4 bytes of the bootstrap prom contain
* the value loaded into the stack pointer as part
* of the CPU32's hardware reset exception handler.
* The following 4 bytes contain the value loaded
* into the program counter.
* The low order three octets of the boards' Ethernet
* address are stored in the three bytes immediately
* preceding this initial program counter value.
*
* See startup/linkcmds and start360/start360.s for
* details on how this is done.
*
* The high order three octets of the Ethernet address
* are fixed and indicate that the address is that
* of a Motorola device.
*/
{
extern void *_RomBase; /* Value provided by linkcmds script */
const unsigned long *ExceptionVectors;
const unsigned char *entryPoint;
char cbuf[30];
memset (iface->hwaddr, 0x08, EADDR_LEN);
/*
* Set up the fixed portion of the hardware address
*/
iface->hwaddr[0] = 0x08;
iface->hwaddr[1] = 0x00;
iface->hwaddr[2] = 0x3e;
/*
* Parse arguments
*/
for (argIndex = 1 ; argIndex < (argc - 1) ; argIndex++) {
if (strcmp ("mtu", argv[argIndex]) == 0) {
iface->mtu = atoi (argv[++argIndex]);
}
else if (strcmp ("broadcast", argv[argIndex]) == 0) {
if (*argv[++argIndex] == 'n')
broadcastFlag = 0;
}
else if (strcmp ("rbuf", argv[argIndex]) == 0) {
dp->rxBdCount = atoi (argv[++argIndex]);
}
else if (strcmp ("tbuf", argv[argIndex]) == 0) {
dp->txBdCount = atoi (argv[++argIndex]) * TX_BD_PER_BUF;
}
else if (strcmp ("ip", argv[argIndex]) == 0) {
iface->addr = resolve (argv[++argIndex]);
}
else if (strcmp ("ether", argv[argIndex]) == 0) {
argIndex++;
if (strcmp (argv[argIndex], "prom") == 0) {
/*
* The first 4 bytes of the bootstrap prom
* contain the value loaded into the stack
* pointer as part of the CPU32's hardware
* reset exception handler. The following
* 4 bytes contain the value loaded into the
* program counter. The low order three
* octets of the boards' Ethernet address are
* stored in the three bytes immediately
* preceding this initial program counter value.
*
* See startup/linkcmds and start360/start360.s
* for details on how this is done.
*
* The high order three octets of the Ethernet
* address are fixed and indicate that the
* address is that of a Motorola device.
*/
extern void *_RomBase; /* From linkcmds */
const unsigned long *ExceptionVectors;
const unsigned char *entryPoint;
/*
* Sanity check -- assume entry point must be
* within 1 MByte of beginning of boot ROM.
*/
ExceptionVectors = (const unsigned long *)&_RomBase;
entryPoint = (const unsigned char *)ExceptionVectors[1];
if (((unsigned long)entryPoint - (unsigned long)ExceptionVectors)
/*
* Set up the fixed portion of the address
*/
iface->hwaddr[0] = 0x08;
iface->hwaddr[1] = 0x00;
iface->hwaddr[2] = 0x3e;
/*
* Sanity check -- assume entry point must be
* within 1 MByte of beginning of boot ROM.
*/
ExceptionVectors = (const unsigned long *)&_RomBase;
entryPoint = (const unsigned char *)ExceptionVectors[1];
if (((unsigned long)entryPoint - (unsigned long)ExceptionVectors)
>= (1 * 1024 * 1024)) {
printf ("Warning -- Ethernet address can not be found in bootstrap PROM.\n");
iface->hwaddr[3] = 0x12;
iface->hwaddr[4] = 0xE2;
iface->hwaddr[5] = 0x05;
printf ("Warning -- Ethernet address can not be found in bootstrap PROM.\n");
iface->hwaddr[3] = 0xC2;
iface->hwaddr[4] = 0xE7;
iface->hwaddr[5] = 0x08;
}
else {
iface->hwaddr[3] = entryPoint[-3];
iface->hwaddr[4] = entryPoint[-2];
iface->hwaddr[5] = entryPoint[-1];
}
}
else {
gether (iface->hwaddr, argv[argIndex]);
}
}
else {
iface->hwaddr[3] = entryPoint[-3];
iface->hwaddr[4] = entryPoint[-2];
iface->hwaddr[5] = entryPoint[-1];
}
printf ("Ethernet address: %s\n", pether (cbuf, iface->hwaddr));
printf ("Argument %d (%s) is invalid.\n", argIndex, argv[argIndex]);
return -1;
}
}
printf ("Ethernet address: %s\n", pether (cbuf, iface->hwaddr));
/*
* Fill in remainder of interface configuration
*/
iface->dev = i;
iface->raw = m360Enet_raw;
iface->stop = m360Enet_stop;