[SRU][PULL][jammy:linux-gcp] Patches needed for AmpereOne (arm64)

[John Cabaj]

BugLink: https://bugs.launchpad.net/bugs/2044192

[Impact]

* Google requested patches for AmpereOne machine type

[Fix]

* Cherry-picks from upstream

484baebd076c ("clocksource/drivers/arch_arm_timer: Move workaround synchronisation around")
ad6c750791e3 ("clocksource/drivers/arm_arch_timer: Fix masking for high freq counters")
6e69aa090138 ("clocksource/drivers/arm_arch_timer: Drop unnecessary ISB on CVAL programming")
ab9a0239324a ("clocksource/drivers/arm_arch_timer: Remove any trace of the TVAL programming interface")
9f074b90e6fd ("clocksource/drivers/arm_arch_timer: Work around broken CVAL implementations")
562eb64c090f ("clocksource/drivers/arm_arch_timer: Advertise 56bit timer to the core code")
7bc14651e24e ("clocksource/drivers/arm_arch_timer: Move MMIO timer programming over to CVAL")
8b06e41fe7bc ("clocksource/drivers/arm_arch_timer: Fix MMIO base address vs callback ordering issue")
0ffa6302e2f6 ("clocksource/drivers/arm_arch_timer: Move drop _tval from erratum function names")
8065137de0cf ("clocksource/drivers/arm_arch_timer: Move system register timer programming over to CVAL")
674941dc157e ("clocksource/drivers/arm_arch_timer: Extend write side of timer register accessors to u64")
0c1f5fc141ea ("clocksource/drivers/arm_arch_timer: Drop CNT*_TVAL read accessors")
02aecc78b278 ("clocksource/arm_arch_timer: Add build-time guards for unhandled register accesses")

[Test Case]

* Compile tested
* Boot tested on AmpereOne instance

[Where things could go wrong]

* Low chance of regression. Changes isolated to ARM timers.

[Other Info]

* SF #00372821

-----

The following changes since commit 04c19cd6345a4c14df5e64d6a4523d52342321dc:

  UBUNTU: Ubuntu-gcp-5.15.0-1048.56 (2023-11-18 14:50:34 -0300)

are available in the git repository at:

  git+ssh://user@kathleen/home/john-cabaj/for-review/jammy_linux-gcp/ ampere_one

for you to fetch changes up to 484baebd076c93b60979ae26718477c8bf1bb47a:

  clocksource/drivers/arch_arm_timer: Move workaround synchronisation around (2023-11-21 16:21:06 -0600)

----------------------------------------------------------------
Marc Zyngier (12):
      clocksource/arm_arch_timer: Add build-time guards for unhandled register accesses
      clocksource/drivers/arm_arch_timer: Drop CNT*_TVAL read accessors
      clocksource/drivers/arm_arch_timer: Extend write side of timer register accessors to u64
      clocksource/drivers/arm_arch_timer: Move system register timer programming over to CVAL
      clocksource/drivers/arm_arch_timer: Move drop _tval from erratum function names
      clocksource/drivers/arm_arch_timer: Fix MMIO base address vs callback ordering issue
      clocksource/drivers/arm_arch_timer: Move MMIO timer programming over to CVAL
      clocksource/drivers/arm_arch_timer: Advertise 56bit timer to the core code
      clocksource/drivers/arm_arch_timer: Work around broken CVAL implementations
      clocksource/drivers/arm_arch_timer: Remove any trace of the TVAL programming interface
      clocksource/drivers/arm_arch_timer: Drop unnecessary ISB on CVAL programming
      clocksource/drivers/arch_arm_timer: Move workaround synchronisation around

Oliver Upton (1):
      clocksource/drivers/arm_arch_timer: Fix masking for high freq counters

 arch/arm/include/asm/arch_timer.h    |  37 +++++++++++++---------
 arch/arm64/include/asm/arch_timer.h  |  52 ++++++++++++++----------------
 drivers/clocksource/arm_arch_timer.c | 243 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-------------------------------------------------------
 include/clocksource/arm_arch_timer.h |   2 +-
 4 files changed, 193 insertions(+), 141 deletions(-)