/* check for old WAITs to be removed (avoiding a wrap) */
static int t20_syncpt_wait_check(struct nvhost_syncpt *sp,
struct nvmap_client *nvmap,
u32 waitchk_mask,
struct nvhost_waitchk *wait,
int num_waitchk)
{
u32 idx;
int err = 0;
/* get current syncpt values */
for (idx = 0; idx < NV_HOST1X_SYNCPT_NB_PTS; idx++) {
if (BIT(idx) & waitchk_mask)
nvhost_syncpt_update_min(sp, idx);
}
BUG_ON(!wait && !num_waitchk);
/* compare syncpt vs wait threshold */
while (num_waitchk) {
u32 override;
BUG_ON(wait->syncpt_id >= NV_HOST1X_SYNCPT_NB_PTS);
trace_nvhost_syncpt_wait_check(wait->mem, wait->offset,
wait->syncpt_id, wait->thresh);
if (nvhost_syncpt_is_expired(sp,
wait->syncpt_id, wait->thresh)) {
/*
* NULL an already satisfied WAIT_SYNCPT host method,
* by patching its args in the command stream. The
* method data is changed to reference a reserved
* (never given out or incr) NVSYNCPT_GRAPHICS_HOST
* syncpt with a matching threshold value of 0, so
* is guaranteed to be popped by the host HW.
*/
dev_dbg(&syncpt_to_dev(sp)->dev->dev,
"drop WAIT id %d (%s) thresh 0x%x, min 0x%x\n",
wait->syncpt_id,
syncpt_op(sp).name(sp, wait->syncpt_id),
wait->thresh,
nvhost_syncpt_read_min(sp, wait->syncpt_id));
/* patch the wait */
override = nvhost_class_host_wait_syncpt(
NVSYNCPT_GRAPHICS_HOST, 0);
err = nvmap_patch_word(nvmap,
(struct nvmap_handle *)wait->mem,
wait->offset, override);
if (err)
break;
}
/*
* Check driver supplied waitchk structs for syncpt thresholds
* that have already been satisfied and NULL the comparison (to
* avoid a wrap condition in the HW).
*/
static int do_waitchks(struct nvhost_job *job, struct nvhost_syncpt *sp,
u32 patch_mem, void *patch_addr)
{
int i;
/* compare syncpt vs wait threshold */
for (i = 0; i < job->num_waitchk; i++) {
struct nvhost_waitchk *wait = &job->waitchk[i];
/* skip all other gathers */
if (patch_mem != wait->mem)
continue;
trace_nvhost_syncpt_wait_check(wait->mem, wait->offset,
wait->syncpt_id, wait->thresh,
nvhost_syncpt_read(sp, wait->syncpt_id));
if (nvhost_syncpt_is_expired(sp,
wait->syncpt_id, wait->thresh)) {
/*
* NULL an already satisfied WAIT_SYNCPT host method,
* by patching its args in the command stream. The
* method data is changed to reference a reserved
* (never given out or incr) NVSYNCPT_GRAPHICS_HOST
* syncpt with a matching threshold value of 0, so
* is guaranteed to be popped by the host HW.
*/
dev_dbg(&syncpt_to_dev(sp)->dev->dev,
"drop WAIT id %d (%s) thresh 0x%x, min 0x%x\n",
wait->syncpt_id,
syncpt_op().name(sp, wait->syncpt_id),
wait->thresh,
nvhost_syncpt_read_min(sp, wait->syncpt_id));
/* patch the wait */
nvhost_syncpt_patch_wait(sp,
(patch_addr + wait->offset));
}
wait->mem = 0;
}
return 0;
}
