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intel_reg_read: add support for getopt

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This will allow us to pass more options to it in the future.

v2: fix whitespacing issues and improve scary warning text as suggested by
Paul Menzel.

Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Signed-off-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
This commit is contained in:
Eugeni Dodonov 2012-02-28 17:20:35 -03:00
parent 628ad0c91b
commit b7464e4032
1 changed files with 35 additions and 9 deletions
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44
tools/intel_reg_read.c
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@ -41,21 +41,45 @@ static void dump_range(uint32_t start, uint32_t end)
*(volatile uint32_t *)((volatile char*)mmio + i));
}
static void usage(char *cmdname)
{
printf("Usage: %s [-f | addr]\n", cmdname);
printf("\t -f : read back full range of registers.\n");
printf("\t WARNING! This option may result in a machine hang!\n");
printf("\t addr : in 0xXXXX format\n");
}
int main(int argc, char** argv)
{
int ret = 0;
uint32_t reg;
int ch;
char *cmdname = strdup(argv[0]);
int full_dump = 0;
if (argc != 2) {
printf("Usage: %s [-f | addr]\n", argv[0]);
printf("\t -f : read back full range of registers.\n");
printf("\t WARNING! This could be danger to hang the machine!\n");
printf("\t addr : in 0xXXXX format\n");
exit(1);
while ((ch = getopt(argc, argv, "fh")) != -1) {
switch(ch) {
case 'f':
full_dump = 1;
break;
case 'h':
usage(cmdname);
ret = 1;
goto out;
}
}
argc -= optind;
argv += optind;
if (argc != 1) {
usage(cmdname);
ret = 1;
goto out;
}
intel_register_access_init(intel_get_pci_device(), 0);
if (!strcmp(argv[1], "-f")) {
if (full_dump) {
dump_range(0x00000, 0x00fff); /* VGA registers */
dump_range(0x02000, 0x02fff); /* instruction, memory, interrupt control registers */
dump_range(0x03000, 0x031ff); /* FENCE and PPGTT control registers */
@ -71,12 +95,14 @@ int main(int argc, char** argv)
dump_range(0x70000, 0x72fff); /* display and cursor registers */
dump_range(0x73000, 0x73fff); /* performance counters */
} else {
sscanf(argv[1], "0x%x", &reg);
sscanf(argv[0], "0x%x", &reg);
dump_range(reg, reg + 4);
}
intel_register_access_fini();
return 0;
out:
free(cmdname);
return ret;
}