github.com/rdolbeau.SBusFPGA
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enough delay for longer-timed AES/GCM

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Romain Dolbeau
2021-09-04 06:25:27 -04:00
parent e57cf9d9a8
commit e820d105da
1 changed files with 7 additions and 1 deletions
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8
NetBSD/9.0/usr/src/sys/dev/sbus/sbusfpga_curve25519engine.c
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@@ -941,10 +941,11 @@ static int start_job(struct sbusfpga_curve25519engine_softc *sc) {
static int wait_job(struct sbusfpga_curve25519engine_softc *sc, uint32_t param) {
uint32_t status = curve25519engine_status_read(sc);
int count = 0;
int max_count = 50;
int max_count = 250;
int del = 1;
const int max_del = 32;
static int max_del_seen = 1;
static int max_cnt_seen = 0;
while ((status & (1<<CSR_CURVE25519ENGINE_STATUS_RUNNING_OFFSET)) && (count < max_count)) {
//uint32_t ls_status = curve25519engine_ls_status_read(sc);
@@ -958,6 +959,11 @@ static int wait_job(struct sbusfpga_curve25519engine_softc *sc, uint32_t param)
max_del_seen = del;
aprint_normal_dev(sc->sc_dev, "WAIT - new max delay %d after %d count (param was %u)\n", max_del_seen, count, param);
}
if (count > max_cnt_seen) {
max_cnt_seen = count;
aprint_normal_dev(sc->sc_dev, "WAIT - new max count %d with %d delay (param was %u)\n", max_cnt_seen, del, param);
}
//curve25519engine_control_write(sc, 0);
if (status & (1<<CSR_CURVE25519ENGINE_STATUS_RUNNING_OFFSET)) {