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| author |   Oded Gabbay <oded.gabbay@gmail.com> | 2020-07-15 21:59:32 +0300 |
|---|---|---|
| committer | Oded Gabbay <oded.gabbay@gmail.com> | 2020-07-24 20:31:37 +0300 |
| commit | 8df8cb1efc1962356c97656839ea9c41e1ed4ba9 (patch) | |
| tree | 1b12bb76e046441dcb98047d3f03eea8d65d346e /drivers/misc | |
| parent | habanalabs: create internal CB pool (diff) | |
| download | wireguard-linux-8df8cb1efc1962356c97656839ea9c41e1ed4ba9.tar.xz wireguard-linux-8df8cb1efc1962356c97656839ea9c41e1ed4ba9.zip | |
habanalabs: enable device before hw_init()
Device is now enabled before the hw_init() because part of the
initialization requires communication with the device firmware to get
information that is required for the initialization itself
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
Reviewed-by: Tomer Tayar <ttayar@habana.ai>
Diffstat (limited to 'drivers/misc')
| -rw-r--r-- | drivers/misc/habanalabs/common/device.c | 16 | ||||
| -rw-r--r-- | drivers/misc/habanalabs/common/sysfs.c | 3 |
2 files changed, 15 insertions, 4 deletions
diff --git a/drivers/misc/habanalabs/common/device.c b/drivers/misc/habanalabs/common/device.c index 84800efec10d..9919ff121067 100644 --- a/drivers/misc/habanalabs/common/device.c +++ b/drivers/misc/habanalabs/common/device.c @@ -1033,6 +1033,12 @@ again: } } + /* Device is now enabled as part of the initialization requires + * communication with the device firmware to get information that + * is required for the initialization itself + */ + hdev->disabled = false; + rc = hdev->asic_funcs->hw_init(hdev); if (rc) { dev_err(hdev->dev, @@ -1040,8 +1046,6 @@ again: goto out_err; } - hdev->disabled = false; - /* Check that the communication with the device is working */ rc = hdev->asic_funcs->test_queues(hdev); if (rc) { @@ -1261,6 +1265,12 @@ int hl_device_init(struct hl_device *hdev, struct class *hclass) */ add_cdev_sysfs_on_err = true; + /* Device is now enabled as part of the initialization requires + * communication with the device firmware to get information that + * is required for the initialization itself + */ + hdev->disabled = false; + rc = hdev->asic_funcs->hw_init(hdev); if (rc) { dev_err(hdev->dev, "failed to initialize the H/W\n"); @@ -1268,8 +1278,6 @@ int hl_device_init(struct hl_device *hdev, struct class *hclass) goto out_disabled; } - hdev->disabled = false; - /* Check that the communication with the device is working */ rc = hdev->asic_funcs->test_queues(hdev); if (rc) { diff --git a/drivers/misc/habanalabs/common/sysfs.c b/drivers/misc/habanalabs/common/sysfs.c index 5d78d5e1c782..c4e7c682d584 100644 --- a/drivers/misc/habanalabs/common/sysfs.c +++ b/drivers/misc/habanalabs/common/sysfs.c @@ -334,6 +334,9 @@ static ssize_t eeprom_read_handler(struct file *filp, struct kobject *kobj, char *data; int rc; + if (hl_device_disabled_or_in_reset(hdev)) + return -ENODEV; + if (!max_size) return -EINVAL; |