static int vgpu_gr_free_obj_ctx(struct channel_gk20a *c,
struct nvgpu_free_obj_ctx_args *args)
{
unsigned long timeout = gk20a_get_gr_idle_timeout(c->g);
gk20a_dbg_fn("");
if (c->num_objects == 0)
return 0;
c->num_objects--;
if (c->num_objects == 0) {
c->first_init = false;
gk20a_disable_channel(c,
!c->has_timedout,
timeout);
}
return 0;
}
static int gk20a_ltc_cbc_ctrl(struct gk20a *g, enum gk20a_cbc_op op,
u32 min, u32 max)
{
int err = 0;
struct gr_gk20a *gr = &g->gr;
u32 fbp, slice, ctrl1, val, hw_op = 0;
unsigned long end_jiffies = jiffies +
msecs_to_jiffies(gk20a_get_gr_idle_timeout(g));
u32 delay = GR_IDLE_CHECK_DEFAULT;
u32 slices_per_fbp =
ltc_ltcs_ltss_cbc_param_slices_per_fbp_v(
gk20a_readl(g, ltc_ltcs_ltss_cbc_param_r()));
gk20a_dbg_fn("");
if (gr->compbit_store.size == 0)
return 0;
mutex_lock(&g->mm.l2_op_lock);
if (op == gk20a_cbc_op_clear) {
gk20a_writel(g, ltc_ltcs_ltss_cbc_ctrl2_r(),
ltc_ltcs_ltss_cbc_ctrl2_clear_lower_bound_f(min));
gk20a_writel(g, ltc_ltcs_ltss_cbc_ctrl3_r(),
ltc_ltcs_ltss_cbc_ctrl3_clear_upper_bound_f(max));
hw_op = ltc_ltcs_ltss_cbc_ctrl1_clear_active_f();
} else if (op == gk20a_cbc_op_clean) {
hw_op = ltc_ltcs_ltss_cbc_ctrl1_clean_active_f();
} else if (op == gk20a_cbc_op_invalidate) {
hw_op = ltc_ltcs_ltss_cbc_ctrl1_invalidate_active_f();
} else {
BUG_ON(1);
}
gk20a_writel(g, ltc_ltcs_ltss_cbc_ctrl1_r(),
gk20a_readl(g, ltc_ltcs_ltss_cbc_ctrl1_r()) | hw_op);
for (fbp = 0; fbp < gr->num_fbps; fbp++) {
for (slice = 0; slice < slices_per_fbp; slice++) {
delay = GR_IDLE_CHECK_DEFAULT;
ctrl1 = ltc_ltc0_lts0_cbc_ctrl1_r() +
fbp * proj_ltc_stride_v() +
slice * proj_lts_stride_v();
do {
val = gk20a_readl(g, ctrl1);
if (!(val & hw_op))
break;
usleep_range(delay, delay * 2);
delay = min_t(u32, delay << 1,
GR_IDLE_CHECK_MAX);
} while (time_before(jiffies, end_jiffies) ||
!tegra_platform_is_silicon());
if (!time_before(jiffies, end_jiffies)) {
gk20a_err(dev_from_gk20a(g),
"comp tag clear timeout\n");
err = -EBUSY;
goto out;
}
}
}
out:
mutex_unlock(&g->mm.l2_op_lock);
return 0;
}