struct hl_device *hdev = hpriv->hdev;
struct hl_ctx *ctx = hpriv->ctx;
bool need_soft_reset = false;
- int rc = 0, do_ctx_switch;
+ int rc = 0, do_ctx_switch = 0;
void __user *chunks;
u32 num_chunks, tmp;
u16 sob_count;
int ret;
- do_ctx_switch = atomic_cmpxchg(&ctx->thread_ctx_switch_token, 1, 0);
+ if (hdev->supports_ctx_switch)
+ do_ctx_switch = atomic_cmpxchg(&ctx->thread_ctx_switch_token, 1, 0);
if (do_ctx_switch || (args->in.cs_flags & HL_CS_FLAGS_FORCE_RESTORE)) {
mutex_lock(&hpriv->restore_phase_mutex);
}
}
- ctx->thread_ctx_switch_wait_token = 1;
+ if (hdev->supports_ctx_switch)
+ ctx->thread_ctx_switch_wait_token = 1;
- } else if (!ctx->thread_ctx_switch_wait_token) {
+ } else if (hdev->supports_ctx_switch && !ctx->thread_ctx_switch_wait_token) {
rc = hl_poll_timeout_memory(hdev,
&ctx->thread_ctx_switch_wait_token, tmp, (tmp == 1),
100, jiffies_to_usecs(hdev->timeout_jiffies), false);
* Used only for testing.
* @heartbeat: Controls if we want to enable the heartbeat mechanism vs. the f/w, which verifies
* that the f/w is always alive. Used only for testing.
+ * @supports_ctx_switch: true if a ctx switch is required upon first submission.
*/
struct hl_device {
struct pci_dev *pdev;
u8 compute_ctx_in_release;
u8 supports_mmu_prefetch;
u8 reset_upon_device_release;
+ u8 supports_ctx_switch;
/* Parameters for bring-up */
u64 nic_ports_mask;
hdev->asic_prop.supports_compute_reset = true;
hdev->asic_prop.allow_inference_soft_reset = true;
hdev->supports_wait_for_multi_cs = false;
+ hdev->supports_ctx_switch = true;
hdev->asic_funcs->set_pci_memory_regions(hdev);