[PATCH v10 00/33] Refactor TI K3 R5, DSP and M4 Remoteproc Drivers

[Beleswar Padhi <b-padhi@ti.com>]

This series refactors a lot of functions & callbacks from
ti_k3_dsp_remoteproc.c, ti_k3_r5_remoteproc.c and ti_k3_m4_remoteproc.c
drivers. This is a consolidated and final series as part of the
refactoring of K3 remoteproc drivers. Below is the breakdown:
1. PATCHES #1-#3 fixes important bugs in R5 and DSP drivers before refactoring
them into a common driver.
2. PATCHES #4-#10 does the pre-cleanup and aligns R5, DSP, M4 data structures.
3. PATCHES #11-#33 does the actual refactoring R5, DSP and M4 drivers into
ti_k3_common.c driver.

NOTE:
This series supersedes below series:
https://lore.kernel.org/all/20250219091042.263819-1-b-padhi@ti.com/
https://lore.kernel.org/all/20250317120622.1746415-1-b-padhi@ti.com/
https://lore.kernel.org/all/20250108063727.1416324-1-b-padhi@ti.com/

Testing Done:
1. Tested boot of R5Fs, C66x DSPs, C71x DSPs across Jacinto J7* devices in
remoteproc mode and IPC-Only mode.
2. Tested boot of M4F core _only_ in _AM62xx SK_ board in Remoteproc mode and
IPC-Only mode.
3. Tested Core stop and detach operations from sysfs for R5Fs, C66x DSPs, C71x DSPs
4. Tested device removal paths by executing 'modprobe -r ti_k3_dsp_remoteproc'
and 'modprobe -r ti_k3_r5_remoteproc'.
5. Tested usecases where firmware not available at device probe time, but
later in sysfs, able to load firmware into a remotecore and start it. [R5Fs]
6. Tested that each patch in this series generates no new warnings/errors.

v10: Changelog:
1. Re-ordered Bug Fixes to the start of the series, before starting pre-cleanup
and finally the actual refactor. [Andrew]
2. Broken down commits into more atomic changes for ease of review. [Andrew].
3. Updated commit messages to have uniform flow throughout the series.
4. Carried R/B tags in applicable patches.
5. Further patch specific changelog is attached with patches.

Link to v9:
https://lore.kernel.org/all/20250317120622.1746415-1-b-padhi@ti.com/

v9: Changelog:
1. Added R5 cleanup & refactoring along with existing DSP, M4 refactoring into this series. [Andrew]
2. Dropped Mailbox level IPC checks across R5, DSP, M4 drivers in IPC-only mode. [Andrew] 

Link to v8:
https://lore.kernel.org/all/20250103101231.1508151-1-b-padhi@ti.com/

v8: Changelog:
1. Broken down refactoring into patches, each patch dealing with one function
for ease in review. [Andrew]

Links to older versions:
v7: https://lore.kernel.org/all/20240202175538.1705-1-hnagalla@ti.com/
v6: https://lore.kernel.org/all/20230913111644.29889-1-hnagalla@ti.com/
v5: https://lore.kernel.org/all/20230808044529.25925-1-hnagalla@ti.com/
v4: https://lore.kernel.org/all/20230801141117.2559-1-hnagalla@ti.com/
v3: https://lore.kernel.org/all/20230302171450.1598576-1-martyn.welch@collabora.com/
v2: https://lore.kernel.org/all/20230301111323.1532479-4-martyn.welch@collabora.com/
v1: https://lore.kernel.org/all/20220110040650.18186-1-hnagalla@ti.com/

Thanks,
Beleswar

Beleswar Padhi (31):
  remoteproc: k3-r5: Refactor sequential core power up/down operations
  remoteproc: k3-r5: Re-order internal memory initialization functions
  remoteproc: k3-r5: Re-order k3_r5_release_tsp() function
  remoteproc: k3-r5: Refactor Data Structures to Align with DSP and M4
  remoteproc: k3-r5: Use k3_r5_rproc_mem_data structure for memory info
  remoteproc: k3-{m4/dsp}: Add a void ptr member in rproc internal
    struct
  remoteproc: k3-m4: Add pointer to rproc struct within k3_m4_rproc
  remoteproc: k3-m4: Use k3_rproc_mem_data structure for memory info
  remoteproc: k3: Refactor shared data structures
  remoteproc: k3: Refactor mailbox rx_callback functions into common
    driver
  remoteproc: k3: Refactor .kick rproc ops into common driver
  remoteproc: k3-dsp: Correct Reset logic for devices without lresets
  remoteproc: k3: Refactor rproc_reset() implementation into common
    driver
  remoteproc: k3-dsp: Correct Reset deassert logic for devices w/o
    lresets
  remoteproc: k3: Refactor rproc_release() implementation into common
    driver
  remoteproc: k3-m4: Ping the mbox while acquiring the channel
  remoteproc: k3: Refactor rproc_request_mbox() implementations into
    common driver
  remoteproc: k3-dsp: Don't override rproc ops in IPC-only mode
  remoteproc: k3-dsp: Assert local reset during .prepare callback
  remoteproc: k3: Refactor .prepare rproc ops into common driver
  remoteproc: k3: Refactor .unprepare rproc ops into common driver
  remoteproc: k3: Refactor .start rproc ops into common driver
  remoteproc: k3: Refactor .stop rproc ops into common driver
  remoteproc: k3: Refactor .attach rproc ops into common driver
  remoteproc: k3: Refactor .detach rproc ops into common driver
  remoteproc: k3: Refactor .get_loaded_rsc_table ops into common driver
  remoteproc: k3: Refactor .da_to_va rproc ops into common driver
  remoteproc: k3: Refactor of_get_memories() functions into common
    driver
  remoteproc: k3: Refactor mem_release() functions into common driver
  remoteproc: k3: Refactor reserved_mem_init() functions into common
    driver
  remoteproc: k3: Refactor release_tsp() functions into common driver

Siddharth Vadapalli (2):
  remoteproc: k3-r5: Drop check performed in
    k3_r5_rproc_{mbox_callback/kick}
  remoteproc: k3-dsp: Drop check performed in
    k3_dsp_rproc_{mbox_callback/kick}

 drivers/remoteproc/Makefile               |    4 +-
 drivers/remoteproc/ti_k3_common.c         |  553 +++++++++++
 drivers/remoteproc/ti_k3_common.h         |  113 +++
 drivers/remoteproc/ti_k3_dsp_remoteproc.c |  616 +------------
 drivers/remoteproc/ti_k3_m4_remoteproc.c  |  581 +-----------
 drivers/remoteproc/ti_k3_r5_remoteproc.c  | 1012 +++++++--------------
 6 files changed, 1075 insertions(+), 1804 deletions(-)
 create mode 100644 drivers/remoteproc/ti_k3_common.c
 create mode 100644 drivers/remoteproc/ti_k3_common.h

-- 
2.34.1