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/*
* Author: Daniel De Graaf <dgdegra@tycho.nsa.gov>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2,
* as published by the Free Software Foundation.
*/
#include <stdlib.h>
#include <errno.h>
#include <stdio.h>
#include <xenctrl.h>
#include <fcntl.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include <string.h>
#include <unistd.h>
#include <inttypes.h>
/* Pulled from linux/include/linux/ioport.h */
#define IORESOURCE_TYPE_BITS 0x00001f00 /* Resource type */
#define IORESOURCE_IO 0x00000100
#define IORESOURCE_MEM 0x00000200
#define IORESOURCE_IRQ 0x00000400
#define IORESOURCE_DMA 0x00000800
#define IORESOURCE_BUS 0x00001000
static void usage (int argCnt, char *argv[])
{
fprintf(stderr, "Usage: %s SBDF label <irq_label>\n", argv[0]);
exit(1);
}
int main (int argCnt, char *argv[])
{
int ret, err = 0;
xc_interface *xch = 0;
int seg, bus, dev, fn;
uint32_t sbdf;
uint64_t start, end, flags;
char *pirq_label;
char buf[1024];
FILE *f;
if (argCnt < 3 || argCnt > 4)
usage(argCnt, argv);
if (argCnt == 4) {
pirq_label = argv[3];
} else {
pirq_label = argv[2];
}
xch = xc_interface_open(0,0,0);
if ( !xch )
{
fprintf(stderr, "Unable to create interface to xenctrl: %s\n",
strerror(errno));
err = 1;
goto done;
}
sscanf(argv[1], "%x:%x:%x.%d", &seg, &bus, &dev, &fn);
sbdf = (seg << 16) | (bus << 8) | (dev << 3) | fn;
snprintf(buf, sizeof(buf), "/sys/bus/pci/devices/%04x:%02x:%02x.%d/resource",
seg, bus, dev, fn);
f = fopen(buf, "r");
if (!f) {
fprintf(stderr, "Unable to find device %s: %s\n", argv[1],
strerror(errno));
err = 1;
goto done;
}
ret = xc_flask_add_device(xch, sbdf, argv[2]);
if (ret) {
fprintf(stderr, "xc_flask_add_device: Unable to set context of PCI device %s (0x%x) to %s: %d\n",
argv[1], sbdf, argv[2], ret);
err = 2;
goto done;
}
while (fscanf(f, "0x%"SCNx64" 0x%"SCNx64" 0x%"SCNx64"\n", &start, &end, &flags) == 3) {
if (flags & IORESOURCE_IO) {
// printf("Port %"PRIx64"-%"PRIx64"\n", start, end);
ret = xc_flask_add_ioport(xch, start, end, argv[2]);
if (ret) {
fprintf(stderr, "xc_flask_add_ioport %"PRIx64"-%"PRIx64" failed: %d\n",
start, end, ret);
err = 2;
}
} else if (flags & IORESOURCE_MEM) {
start >>= 12;
end >>= 12;
// printf("IOMEM %"PRIx64"-%"PRIx64"\n", start, end);
ret = xc_flask_add_iomem(xch, start, end, argv[2]);
if (ret) {
fprintf(stderr, "xc_flask_add_iomem %"PRIx64"-%"PRIx64" failed: %d\n",
start, end, ret);
err = 2;
}
}
}
fclose(f);
snprintf(buf, sizeof(buf), "/sys/bus/pci/devices/%04x:%02x:%02x.%d/irq",
seg, bus, dev, fn);
f = fopen(buf, "r");
if (!f)
goto done;
if (fscanf(f, "%" SCNu64, &start) != 1)
start = 0;
if (start) {
ret = xc_flask_add_pirq(xch, start, pirq_label);
if (ret) {
fprintf(stderr, "xc_flask_add_pirq %"PRIu64" failed: %d\n",
start, ret);
err = 2;
}
}
fclose(f);
done:
if ( xch )
xc_interface_close(xch);
return err;
}
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