habanalabs: don't wait for ASIC CPU after reset

Upon reset of the ASIC, the driver would have waited for the CPU to come
out of reset before finishing the reset process. This was done for the
purpose of making the CPU available to answer FLR requests. However, when a
VM shuts down, the driver isn't removed so a reset never happens.
Therefore, remove this waiting period as we don't need it.

Reviewed-by: Omer Shpigelman <oshpigelman@habana.ai>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>

diff --git a/drivers/misc/habanalabs/goya/goya.c b/drivers/misc/habanalabs/goya/goya.c
index 68f0656..db125cf 100644 (file)
--- a/drivers/misc/habanalabs/goya/goya.c
+++ b/drivers/misc/habanalabs/goya/goya.c
@@ -2684,30 +2684,6 @@ static void goya_hw_fini(struct hl_device *hdev, bool hard_reset)
                                        HW_CAP_MMU | HW_CAP_TPC_MBIST |
                                        HW_CAP_GOLDEN | HW_CAP_TPC);
        memset(goya->events_stat, 0, sizeof(goya->events_stat));
-
-       if (!hdev->pldm) {
-               int rc;
-               /* In case we are running inside VM and the VM is
-                * shutting down, we need to make sure CPU boot-loader
-                * is running before we can continue the VM shutdown.
-                * That is because the VM will send an FLR signal that
-                * we must answer
-                */
-               dev_info(hdev->dev,
-                       "Going to wait up to %ds for CPU boot loader\n",
-                       GOYA_CPU_TIMEOUT_USEC / 1000 / 1000);
-
-               rc = hl_poll_timeout(
-                       hdev,
-                       mmPSOC_GLOBAL_CONF_WARM_REBOOT,
-                       status,
-                       (status == CPU_BOOT_STATUS_DRAM_RDY),
-                       10000,
-                       GOYA_CPU_TIMEOUT_USEC);
-               if (rc)
-                       dev_err(hdev->dev,
-                               "failed to wait for CPU boot loader\n");
-       }
 }
 
 int goya_suspend(struct hl_device *hdev)

diff --git a/drivers/misc/habanalabs/goya/goyaP.h b/drivers/misc/habanalabs/goya/goyaP.h
index c3230cb..1555d03 100644 (file)
--- a/drivers/misc/habanalabs/goya/goyaP.h
+++ b/drivers/misc/habanalabs/goya/goyaP.h
@@ -45,7 +45,7 @@
 
 #define CORESIGHT_TIMEOUT_USEC         100000          /* 100 ms */
 
-#define GOYA_CPU_TIMEOUT_USEC          10000000        /* 10s */
+#define GOYA_CPU_TIMEOUT_USEC          15000000        /* 15s */
 
 #define TPC_ENABLED_MASK               0xFF