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/**************************************************************************
Etherboot - BOOTP/TFTP Bootstrap Program
Skeleton NIC driver for Etherboot
***************************************************************************/
/*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2, or (at
* your option) any later version.
*/
/* to get toupper() */
#include <ctype.h>
/* to get some global routines like printf */
#include "etherboot.h"
/* to get the interface to the body of the program */
#include "nic.h"
/* to get the PCI support functions, if this is a PCI NIC */
#include <gpxe/pci.h>
/* to get the ISA support functions, if this is an ISA NIC */
#include <gpxe/isa.h>
#include "mt_version.c"
#include "mt23108_imp.c"
/* NIC specific static variables go here */
int prompt_key(int secs, unsigned char *ch_p)
{
unsigned long tmo;
unsigned char ch;
for (tmo = currticks() + secs * TICKS_PER_SEC; currticks() < tmo;) {
if (iskey()) {
ch = toupper(getchar());
if ((ch=='V') || (ch=='I')) {
*ch_p = ch;
return 1;
}
}
}
return 0;
}
/**************************************************************************
IRQ - handle interrupts
***************************************************************************/
static void tavor_irq(struct nic *nic, irq_action_t action)
{
/* This routine is somewhat optional. Etherboot itself
* doesn't use interrupts, but they are required under some
* circumstances when we're acting as a PXE stack.
*
* If you don't implement this routine, the only effect will
* be that your driver cannot be used via Etherboot's UNDI
* API. This won't affect programs that use only the UDP
* portion of the PXE API, such as pxelinux.
*/
if (0) {
nic = NULL;
}
switch (action) {
case DISABLE:
case ENABLE:
/* Set receive interrupt enabled/disabled state */
/*
outb ( action == ENABLE ? IntrMaskEnabled : IntrMaskDisabled,
nic->ioaddr + IntrMaskRegister );
*/
break;
case FORCE:
/* Force NIC to generate a receive interrupt */
/*
outb ( ForceInterrupt, nic->ioaddr + IntrForceRegister );
*/
break;
}
}
/**************************************************************************
POLL - Wait for a frame
***************************************************************************/
static int tavor_poll(struct nic *nic, int retrieve)
{
/* Work out whether or not there's an ethernet packet ready to
* read. Return 0 if not.
*/
/*
if ( ! <packet_ready> ) return 0;
*/
/* retrieve==0 indicates that we are just checking for the
* presence of a packet but don't want to read it just yet.
*/
/*
if ( ! retrieve ) return 1;
*/
/* Copy data to nic->packet. Data should include the
* link-layer header (dest MAC, source MAC, type).
* Store length of data in nic->packetlen.
* Return true to indicate a packet has been read.
*/
/*
nic->packetlen = <packet_length>;
memcpy ( nic->packet, <packet_data>, <packet_length> );
return 1;
*/
unsigned int size;
int rc;
rc = poll_imp(nic, retrieve, &size);
if (rc) {
return 0;
}
if (size == 0) {
return 0;
}
nic->packetlen = size;
return 1;
}
/**************************************************************************
TRANSMIT - Transmit a frame
***************************************************************************/
static void tavor_transmit(struct nic *nic, const char *dest, /* Destination */
unsigned int type, /* Type */
unsigned int size, /* size */
const char *packet)
{ /* Packet */
int rc;
/* Transmit packet to dest MAC address. You will need to
* construct the link-layer header (dest MAC, source MAC,
* type).
*/
if (nic) {
rc = transmit_imp(dest, type, packet, size);
if (rc)
eprintf("tranmit error");
}
}
/**************************************************************************
DISABLE - Turn off ethernet interface
***************************************************************************/
static void tavor_disable(struct dev *dev)
{
/* put the card in its initial state */
/* This function serves 3 purposes.
* This disables DMA and interrupts so we don't receive
* unexpected packets or interrupts from the card after
* etherboot has finished.
* This frees resources so etherboot may use
* this driver on another interface
* This allows etherboot to reinitialize the interface
* if something is something goes wrong.
*/
if (dev || 1) { // ????
disable_imp();
}
}
/**************************************************************************
PROBE - Look for an adapter, this routine's visible to the outside
***************************************************************************/
static int tavor_probe(struct dev *dev, struct pci_device *pci)
{
struct nic *nic = (struct nic *)dev;
int rc;
unsigned char user_request;
if (pci->vendor != MELLANOX_VENDOR_ID) {
eprintf("");
return 0;
}
printf("\n");
printf("Mellanox Technologies LTD - Boot over IB implementaion\n");
printf("Build version = %s\n\n", build_revision);
verbose_messages = 0;
print_info = 0;
printf("Press within 3 seconds:\n");
printf("V - to increase verbosity\n");
printf("I - to print information\n");
if (prompt_key(3, &user_request)) {
if (user_request == 'V') {
printf("User selected verbose messages\n");
verbose_messages = 1;
}
else if (user_request == 'I') {
printf("User selected to print information\n");
print_info = 1;
}
}
printf("\n");
adjust_pci_device(pci);
nic->priv_data = NULL;
rc = probe_imp(pci, nic);
/* give the user a chance to look at the info */
if (print_info)
sleep(5);
if (!rc) {
/* store NIC parameters */
nic->ioaddr = pci->ioaddr & ~3;
nic->irqno = pci->irq;
/* point to NIC specific routines */
dev->disable = tavor_disable;
nic->poll = tavor_poll;
nic->transmit = tavor_transmit;
nic->irq = tavor_irq;
return 1;
}
/* else */
return 0;
}
static struct pci_id tavor_nics[] = {
PCI_ROM(0x15b3, 0x5a44, "MT23108", "MT23108 HCA driver"),
PCI_ROM(0x15b3, 0x6278, "MT25208", "MT25208 HCA driver"),
};
struct pci_driver tavor_driver __pci_driver = {
.type = NIC_DRIVER,
.name = "MT23108/MT25208",
.probe = tavor_probe,
.ids = tavor_nics,
.id_count = sizeof(tavor_nics) / sizeof(tavor_nics[0]),
.class = 0,
};
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