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Attempt to enable device if not connecting via driver

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This commit is contained in:
Alex Forencich 2020-10-04 00:42:48 -07:00
parent ba5aa5a82b
commit e7c0f17c32
1 changed files with 27 additions and 0 deletions
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27
utils/mqnic.c
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@ -34,8 +34,10 @@ either expressed or implied, of The Regents of the University of California.
#include "mqnic.h"
#include <fcntl.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include <sys/stat.h>
@ -86,6 +88,31 @@ struct mqnic *mqnic_open(const char *dev_name)
goto fail_mmap_regs;
}
if (mqnic_reg_read32(dev->regs, MQNIC_REG_FW_ID) == 0xffffffff)
{
// if we were given a PCIe resource, then we may need to enable the device
char path[PATH_MAX+32];
char *ptr;
strcpy(path, dev_name);
ptr = strrchr(path, '/');
if (ptr)
{
strcpy(++ptr, "enable");
}
if (access(path, F_OK) != -1)
{
FILE *fp = fopen(path, "w");
if (fp)
{
fputc('1', fp);
fclose(fp);
}
}
}
if (mqnic_reg_read32(dev->regs, MQNIC_REG_FW_ID) == 0xffffffff)
{
fprintf(stderr, "Error: device needs to be reset\n");