void find_ptimer_b12(int cnum)
{
uint8_t signals_ref_timer[0x100 * 8];
uint8_t signals_tmp[0x100 * 8];
struct signals_comparaison diffs;
int i;
uint32_t r_9210, r_9400;
printf("<PTIMER_B12>\n");
r_9210 = nva_rd32(cnum, 0x9210);
r_9400 = nva_rd32(cnum, 0x9400);
/* stop the time */
nva_wr32(cnum, 0x9210, 0);
nva_wr32(cnum, 0x9400, 0);
poll_signals(cnum, signals_ref_timer);
nva_wr32(cnum, 0x9400, 0x20000);
poll_signals(cnum, signals_tmp);
/* restore ptimer */
nva_wr32(cnum, 0x9400, r_9400);
nva_wr32(cnum, 0x9210, r_9210);
diffs = signals_compare(signals_ref_timer, signals_tmp);
if (diffs.diff_count >= 1) {
for (i = 0; i < diffs.diff_count; i++) {
uint8_t set, signal;
set = diffs.differences[i].set;
signal = diffs.differences[i].signal;
if (diffs.differences[i].set == 0) {
if (diffs.differences[i].change == ZERO_TO_ONE)
printf("PTIMER_B12: Set %u, signal 0x%.2x\n", set, signal);
} else {
printf("Unexpected difference: ");
print_difference(diffs.differences[i]);
}
}
} else
printf("Not found.\n");
signals_comparaison_free(diffs);
printf("</PTIMER_B12>\n\n");
}
void find_ctxCtlFlags(int cnum)
{
uint8_t signals_ref_ctx[0x100 * 8];
uint8_t signals_tmp[0x100 * 8];
struct signals_comparaison diffs;
int bit, i;
uint32_t r_400824 = nva_rd32(cnum, 0x400824);
printf("<CTXCTL FLAGS>\n");
nva_mask(cnum, 0x400824, 0xf0000000, 0);
poll_signals(cnum, signals_ref_ctx);
for (bit = 28; bit < 32; bit++) {
nva_mask(cnum, 0x400824, 0xf0000000, 1 << bit);
poll_signals(cnum, signals_tmp);
diffs = signals_compare(signals_ref_ctx, signals_tmp);
if (diffs.diff_count >= 1) {
for (i = 0; i < diffs.diff_count; i++) {
uint8_t set, signal;
set = diffs.differences[i].set;
signal = diffs.differences[i].signal;
if (diffs.differences[i].set == 1) {
if (diffs.differences[i].change == ZERO_TO_ONE)
printf("CTXCTL flag 0x%.2x: Set %u, signal 0x%.2x\n", bit, set, signal);
} else {
printf("Unexpected difference: ");
print_difference(diffs.differences[i]);
}
}
} else
printf("Not found. Please re-run when the GPU is idle.\n");
signals_comparaison_free(diffs);
}
nva_wr32(cnum, 0x400824, r_400824);
printf("</CTXCTL FLAGS>\n\n");
}
int main(int argc, char **argv)
{
int c, cnum = 0;
if (nva_init()) {
fprintf (stderr, "PCI init failure!\n");
return 1;
}
/* Arguments parsing */
while ((c = getopt (argc, argv, "c:")) != -1)
switch (c) {
case 'c':
sscanf(optarg, "%d", &cnum);
break;
}
if (cnum >= nva_cardsnum) {
if (nva_cardsnum)
fprintf (stderr, "No such card.\n");
else
fprintf (stderr, "No cards found.\n");
return 1;
}
if (nva_cards[cnum].chipset < 0x10 ||
nva_cards[cnum].chipset >= 0xc0)
{
fprintf(stderr, "The chipset nv%x isn't currently supported\n",
nva_cards[cnum].chipset);
return 1;
}
/* Init */
nva_wr32(cnum, 0x200, 0xffffffff);
printf("Chipset nv%x:\n\n", nva_cards[cnum].chipset);
poll_signals(cnum, signals_ref);
find_counter_noise(cnum);
find_ptimer_b12(cnum);
find_host_mem_read_write(cnum);
find_mmio_read_write(cnum, 0x200, "MMIO");
find_mmio_read_write(cnum, 0x2210, "MMIO_PFIFO");
find_mmio_read_write(cnum, 0x610384, "MMIO_PDISPLAY");
find_mmio_read_write(cnum, 0x6666, "MMIO_INVALID");
find_pgraphIdle_and_interrupt(cnum);
find_ctxCtlFlags(cnum);
return 0;
}
void poll_loop(void)
{
SIG_ENTITY *sig;
fd_set perm,set;
int fds,ret;
FD_ZERO(&perm);
FD_SET(kernel,&perm);
fds = kernel+1;
for (sig = entities; sig; sig = sig->next) {
FD_SET(sig->signaling,&perm);
if (fds <= sig->signaling) fds = sig->signaling+1;
}
gettimeofday(&now,NULL);
while (!stop) {
set = perm;
poll_signals();
/*
* Here we have a small race condition: if a signal is delivered after
* poll_signals tests for it but before select sleeps, we miss that
* signal. If it is sent again, we're of course likely to get it. This
* isn't worth fixing, because those signals are only used for
* debugging anyway.
*/
ret = select(fds,&set,NULL,NULL,next_timer());
if (ret < 0) {
if (errno != EINTR) perror("select");
}
else {
diag(COMPONENT,DIAG_DEBUG,"----------");
gettimeofday(&now,NULL);
if (FD_ISSET(kernel,&set)) recv_kernel();
for (sig = entities; sig; sig = sig->next)
if (FD_ISSET(sig->signaling,&set)) recv_signaling(sig);
expire_timers();
/* expire timers after handling messges to make sure we don't
time out unnecessarily because of scheduling delays */
}
}
}
void find_pgraphIdle_and_interrupt(int cnum)
{
unsigned char signals_idle[0x100 * 8];
struct signals_comparaison diffs;
int i;
uint32_t r_400500, r_400808, r_40013c;
printf("<PGRAPH_IDLE/INTERRUPT> /!\\ no drivers should be loaded!\n");
/* safety check: */
if (nva_rd32(cnum, 0x140) == 1) {
printf("You shouldn't run this tool while a driver is running\n");
goto error;
}
/* reboot PGRAPH */
nva_mask(cnum, 0x200, 0x00201000, 0x00000000);
nva_mask(cnum, 0x200, 0x00201000, 0x00201000);
r_400500 = nva_rd32(cnum, 0x400500);
r_400808 = nva_rd32(cnum, 0x400808);
r_40013c = nva_rd32(cnum, 0x40013c);
/* generate an illegal method IRQ
* that will pull the PGRAP_IDLE signal down and the PGRAPH_INTERRUPT up
*
* neither nouveau or nvidia should be loaded as they would ack the interrupt
* straight away.
*/
nva_wr32(cnum, 0x400500, 0x10001);
nva_wr32(cnum, 0x400808, 0xa00000fc);
nva_wr32(cnum, 0x40013c, 0xffffffff);
poll_signals(cnum, signals_idle);
diffs = signals_compare(signals_ref, signals_idle);
if (diffs.diff_count >= 1) {
for (i = 0; i < diffs.diff_count; i++) {
uint8_t set, signal;
set = diffs.differences[i].set;
signal = diffs.differences[i].signal;
if (diffs.differences[i].set == 1) {
if (diffs.differences[i].change == ONE_TO_ZERO)
printf("PGRAPH_IDLE: Set %u, signal 0x%.2x\n", set, signal);
else if (diffs.differences[i].change == ZERO_TO_ONE)
printf("PGRAPH_INTERRUPT: Set %u, signal 0x%.2x\n", set, signal);
} else {
printf("Unexpected difference: ");
print_difference(diffs.differences[i]);
}
}
signals_comparaison_free(diffs);
} else
printf("Not found. Please re-run when the GPU is idle.\n");
/* restore our mess */
nva_wr32(cnum, 0x400500, r_400500);
nva_wr32(cnum, 0x400808, r_400808);
nva_wr32(cnum, 0x40013c, r_40013c);
/* ACK all PGRAPH's interrupts */
nva_wr32(cnum, 0x400100, 0xffffffff);
error:
printf("</PGRAPH_IDLE/INTERRUPT>\n\n");
}