Merge tag 'misc-habanalabs-next-2021-06-22' of https://git.kernel.org/pub/scm/linux/kernel/git/ogabbay/linux into char-misc-next

Oded writes:

This tag contains habanalabs driver changes for v5.14:

- Change communication protocol with f/w. The new protocl allows better
  backward compatibility between different f/w versions and is more
  stable.
- Send hard-reset cause to f/w after a hard-reset has happened.
- Move to indirection when generating interrupts to f/w.
- Better progress and error messages during the f/w load stage.
- Recognize that f/w is with enabled security according to device ID.
- Add validity check to event queue mechanism.
- Add new event from f/w that will indicate a daemon has been terminated
  inside the f/w.

- Move to TLB cache range invalidation in the device's MMU.
- Disable memory scrubbing by default for performance.

- Many fixes for sparse/smatch reported errors.
- Enable by default stop-on-err in the ASIC.
- Move to ASYNC device probing to speedup loading of driver in server
  with multiple devices.
- Fix to stop using disabled NIC ports when doing collective operation.
- Use standard error codes instead of positive values.
- Add support for resetting device after user has finished using it.
- Add debugfs option to avoid reset when a CS has got stuck.
- Add print of the last 8 CS pointers in case of error in QMANs.
- Add statistics on opening of the FD of a device.

* tag 'misc-habanalabs-next-2021-06-22' of https://git.kernel.org/pub/scm/linux/kernel/git/ogabbay/linux: (72 commits)
  habanalabs/gaudi: refactor hard-reset related code
  habanalabs/gaudi: add support for NIC DERR
  habanalabs: add validity check for signal cs
  habanalabs: get lower/upper 32 bits via masking
  habanalabs: allow reset upon device release
  debugfs: add skip_reset_on_timeout option
  habanalabs: fix typo
  habanalabs/gaudi: correct driver events numbering
  habanalabs: remove a rogue #ifdef
  habanalabs/gaudi: print last QM PQEs on error
  habanalabs/goya: add '__force' attribute to suppress false alarm
  habanalabs: added open_stats info ioctl
  habanalabs/gaudi: set the correct rc in case of err
  habanalabs/gaudi: update coresight configuration
  habanalabs: remove node from list before freeing the node
  habanalabs: set rc as 'valid' in case of intentional func exit
  habanalabs: zero complex structures using memset
  habanalabs: print more info when failing to pin user memory
  habanalabs: Fix an error handling path in 'hl_pci_probe()'
  habanalabs: print firmware versions
  ...

1 files changed, 13 insertions, 0 deletions

diff --git a/include/uapi/misc/habanalabs.h b/include/uapi/misc/habanalabs.h
index 6d2d34c9f375..a47a731e4527 100644
--- a/include/uapi/misc/habanalabs.h
+++ b/include/uapi/misc/habanalabs.h
@@ -313,6 +313,7 @@ enum hl_device_status {
  * HL_INFO_SYNC_MANAGER  - Retrieve sync manager info per dcore
  * HL_INFO_TOTAL_ENERGY  - Retrieve total energy consumption
  * HL_INFO_PLL_FREQUENCY - Retrieve PLL frequency
+ * HL_INFO_OPEN_STATS    - Retrieve info regarding recent device open calls
  */
 #define HL_INFO_HW_IP_INFO		0
 #define HL_INFO_HW_EVENTS		1
@@ -331,6 +332,7 @@ enum hl_device_status {
 #define HL_INFO_TOTAL_ENERGY		15
 #define HL_INFO_PLL_FREQUENCY		16
 #define HL_INFO_POWER			17
+#define HL_INFO_OPEN_STATS		18
 
 #define HL_INFO_VERSION_MAX_LEN	128
 #define HL_INFO_CARD_NAME_MAX_LEN	16
@@ -445,6 +447,16 @@ struct hl_pll_frequency_info {
 };
 
 /**
+ * struct hl_open_stats_info - device open statistics information
+ * @open_counter: ever growing counter, increased on each successful dev open
+ * @last_open_period_ms: duration (ms) device was open last time
+ */
+struct hl_open_stats_info {
+	__u64 open_counter;
+	__u64 last_open_period_ms;
+};
+
+/**
  * struct hl_power_info - power information
  * @power: power consumption
  */
@@ -664,6 +676,7 @@ struct hl_cs_chunk {
 #define HL_CS_FLAGS_STAGED_SUBMISSION_FIRST	0x80
 #define HL_CS_FLAGS_STAGED_SUBMISSION_LAST	0x100
 #define HL_CS_FLAGS_CUSTOM_TIMEOUT		0x200
+#define HL_CS_FLAGS_SKIP_RESET_ON_TIMEOUT	0x400
 
 #define HL_CS_STATUS_SUCCESS		0