leandrof/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Merge tag 'char-misc-5.2-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Browse Source 
Pull char/misc driver fixes from Greg KH:
 "Here are some small char and misc driver fixes for 5.2-rc4 to resolve
  a number of reported issues.

  The most "notable" one here is the kernel headers in proc^Wsysfs
  fixes. Those changes move the header file info into sysfs and fixes
  the build issues that you reported.

  Other than that, a bunch of small habanalabs driver fixes, some fpga
  driver fixes, and a few other tiny driver fixes.

  All of these have been in linux-next for a while with no reported
  issues"

* tag 'char-misc-5.2-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
  habanalabs: Read upper bits of trace buffer from RWPHI
  habanalabs: Fix virtual address access via debugfs for 2MB pages
  fpga: zynqmp-fpga: Correctly handle error pointer
  habanalabs: fix bug in checking huge page optimization
  habanalabs: Avoid using a non-initialized MMU cache mutex
  habanalabs: fix debugfs code
  uapi/habanalabs: add opcode for enable/disable device debug mode
  habanalabs: halt debug engines on user process close
  test_firmware: Use correct snprintf() limit
  genwqe: Prevent an integer overflow in the ioctl
  parport: Fix mem leak in parport_register_dev_model
  fpga: dfl: expand minor range when registering chrdev region
  fpga: dfl: Add lockdep classes for pdata->lock
  fpga: dfl: afu: Pass the correct device to dma_mapping_error()
  fpga: stratix10-soc: fix use-after-free on s10_init()
  w1: ds2408: Fix typo after 49695ac468 (reset on output_write retry with readback)
  kheaders: Do not regenerate archive if config is not changed
  kheaders: Move from proc to sysfs
  lkdtm/bugs: Adjust recursion test to avoid elision
  lkdtm/usercopy: Moves the KERNEL_DS test to non-canonical
This commit is contained in:
Linus Torvalds
2019-06-08 12:50:36 -07:00
parent 902b2edfca e7bf2ce837
commit 1ce2c85137
27 changed files with 191 additions and 130 deletions
Download Patch File Download Diff File Expand all files Collapse all files

22
include/uapi/misc/habanalabs.h
View File

@@ -413,6 +413,10 @@ struct hl_debug_params_spmu {
#define HL_DEBUG_OP_SPMU 5
/* Opcode for timestamp */
#define HL_DEBUG_OP_TIMESTAMP 6
/* Opcode for setting the device into or out of debug mode. The enable
* variable should be 1 for enabling debug mode and 0 for disabling it
*/
#define HL_DEBUG_OP_SET_MODE 7
struct hl_debug_args {
/*
@@ -574,8 +578,22 @@ struct hl_debug_args {
*
* This IOCTL allows the user to get debug traces from the chip.
*
* The user needs to provide the register index and essential data such as
* buffer address and size.
* Before the user can send configuration requests of the various
* debug/profile engines, it needs to set the device into debug mode.
* This is because the debug/profile infrastructure is shared component in the
* device and we can't allow multiple users to access it at the same time.
*
* Once a user set the device into debug mode, the driver won't allow other
* users to "work" with the device, i.e. open a FD. If there are multiple users
* opened on the device, the driver won't allow any user to debug the device.
*
* For each configuration request, the user needs to provide the register index
* and essential data such as buffer address and size.
*
* Once the user has finished using the debug/profile engines, he should
* set the device into non-debug mode, i.e. disable debug mode.
*
* The driver can decide to "kick out" the user if he abuses this interface.
*
*/
#define HL_IOCTL_DEBUG \