This patch series enable support for ufshcd_abort() and error handler in MCQ mode.
Bao D. Nguyen (7):
ufs: core: Combine 32-bit command_desc_base_addr_lo/hi
ufs: core: Update the ufshcd_clear_cmds() functionality
ufs: mcq: Add supporting functions for mcq abort
ufs: mcq: Add support for clean up mcq resources
ufs: mcq: Added ufshcd_mcq_abort()
ufs: mcq: Use ufshcd_mcq_poll_cqe_lock() in mcq mode
ufs: core: Add error handling for MCQ mode
drivers/ufs/core/ufs-mcq.c | 233 +++++++++++++++++++++++++++++++++++++++-
drivers/ufs/core/ufshcd-priv.h | 17 ++-
drivers/ufs/core/ufshcd.c | 234 +++++++++++++++++++++++++++++++++--------
drivers/ufs/host/ufs-qcom.c | 2 +-
include/ufs/ufshcd.h | 5 +-
include/ufs/ufshci.h | 23 +++-
6 files changed, 457 insertions(+), 57 deletions(-)
---
v5->v6: Addressed Stanley's comments
patch #1,2,3,4,6: unchanged.
patch #5: fixed extra erroneous if() statement introduced in version v5
patch #7: Change ufshcd_complete_requests() to call a new mcq function
ufshcd_mcq_compl_pending_transfer(), leaving ufshcd_transfer_req_compl()
to be used in SDB mode only.
Reset the hwq's head and tail slot variables to default values
when the ufs host controller hw has been reset.
---
v4->v5:
patch #4: fixed uninitialized variable access introduced in patch v3.
---
v3->v4: Mainly addressed Bart's comments
patch #1: updated the commit message
patch #2: renamed ufshcd_clear_cmds() into ufshcd_clear_cmd()
patch #3: removed result arg in ufshcd_mcq_sq_cleanup()
patch #4: removed check for "!rq" in ufshcd_cmd_inflight()
avoided access to door bell register in mcq mode
patch #5, 6: unchanged
patch #7: ufshcd_clear_cmds() to ufshcd_clear_cmd()
---
v2->v3:
patch #1:
New patch per Bart's comment. Helps process utp cmd
descriptor addr easier.
patch #2:
New patch to address Bart's comment regarding potentialoverflow
when mcq queue depth becomes greater than 64.
patch #3:
Address Bart's comments
. Replaced ufshcd_mcq_poll_register() with read_poll_timeout()
. Replace spin_lock(sq_lock) with mutex(sq_mutex)
. Updated ufshcd_mcq_nullify_cmd() and renamed to ufshcd_mcq_nullify_sqe()
. Minor cosmetic changes
patch #4:
Adress Bart's comments. Added new function ufshcd_cmd_inflight()
to replace the usage of lrbp->cmd
patch #5:
Continue replacing lrbp->cmd with ufshcd_cmd_inflight()
patch #6:
No change
patch #7:
Address Stanley Chu's comment about clearing hba->dev_cmd.complete
in clear ufshcd_wait_for_dev_cmd()
Address Bart's comment.
---
v1->v2:
patch #1: Addressed Powen's comment. Replaced read_poll_timeout()
with ufshcd_mcq_poll_register(). The function read_poll_timeout()
may sleep while the caller is holding a spin_lock(). Poll the registers
in a tight loop instead.
--
2.7.4
