[PATCH 0/4 V2][SRU][K/J] Fix iosm: WWAN cannot build the connection (DW5823e)

[Koba Ko]

BugLink: https://bugs.launchpad.net/bugs/1998115

[Impact]
  WWAN(DW5823e) can't build the connection successfully.

[Fix]
  With INTEL_IOMMU disable config or by forcing intel_iommu=off from
  grub some of the features of IOSM driver like browsing, flashing &
  coredump collection is not working.

  When driver calls DMA API - dma_map_single() for tx transfers. It is
  resulting in dma mapping error.

  Set the device DMA addressing capabilities using dma_set_mask() and
  remove the INTEL_IOMMU dependency in kconfig so that driver follows
  the platform config either INTEL_IOMMU enable or disable.

  Because the generic jammy(5.15) doesn't contain NET_DEVLINK and RELAY
  CONFIGs yet on iosm module, the single patch is necessary for Jammy.

[Test Case]
  1. boot up with kernel applied the FIX.
  2. check the status of wwan by "mmcli -m 0"
      Status| unlock retries: sim-pin (3)
            | state: ^[32mconnected^[0m
            | power state: on
            | access tech: lte
            | signal quality: 45% (recent)
       ----------------------------------
       3GPP | imei: ######
            | enabled locks: sim, fixed-dialing
            | operator id: 46692
            | operator name: Chunghwa Telecom
            | registration: home
            | packet service state: attached
            | pco:
            | 0: (complete)

[Where problems could occur]
remove the dependency for intel_iommu, iosm would fit better on other platforms not only Intel.
~~~
V2: Fix the error of compilation on other ARCHes.
* Because riscv64 is enabled on Kinetic, send two CONFIG patches for J/K.
* Built for Kinetic,
[200~remote: *** kernel-cbd
*********************************************************
remote: * Queueing builds (your 'k_gen_nxt'); ok to interrupt
remote: * For results:  ssh cbd ls kobako-kinetic-3c4c6e341c87-OpHy
remote: * 288/576 cores busy (3/6 hosts), 0 builds queued
remote: 2022-12-02 05:05:15
kobako-kinetic-3c4c6e341c87-OpHy/amd64/BUILD-OK
remote: 2022-12-02 05:05:37
kobako-kinetic-3c4c6e341c87-OpHy/arm64/BUILD-OK
remote: 2022-12-02 04:59:24
kobako-kinetic-3c4c6e341c87-OpHy/armhf/BUILD-OK
remote: 2022-12-02 05:04:16
kobako-kinetic-3c4c6e341c87-OpHy/ppc64el/BUILD-OK
remote: 2022-12-02 04:59:40
kobako-kinetic-3c4c6e341c87-OpHy/s390x/BUILD-OK
remote:
************************************************************************

Built for Jammy,
*********************************************************
remote: * Queueing builds (your 'j_gen_nxt'); ok to interrupt
remote: * For results:  ssh cbd ls kobako-jammy-c3bfe5915b61-HKLG
remote: * 0/576 cores busy (0/6 hosts), 0 builds queued
remote: 2022-12-02 04:17:30  kobako-jammy-c3bfe5915b61-HKLG/amd64/BUILD-OK
remote: 2022-12-02 04:19:39  kobako-jammy-c3bfe5915b61-HKLG/arm64/BUILD-OK
remote: 2022-12-02 04:13:31  kobako-jammy-c3bfe5915b61-HKLG/armhf/BUILD-OK
remote: 2022-12-02 04:18:31  kobako-jammy-c3bfe5915b61-HKLG/ppc64el/BUILD-OK
remote: 2022-12-02 04:13:11  kobako-jammy-c3bfe5915b61-HKLG/s390x/BUILD-OK
remote: ************************************************************************


Koba Ko (1):
  [K] UBUNTU: [Config] CONFIG_IOSM update annotations on arm64 armhf
    ppc64el s390x riscv64

M Chetan Kumar (1):
  [K] net: wwan: iosm: fix driver not working with INTEL_IOMMU disabled

 debian.master/config/annotations      | 2 +-
 drivers/net/wwan/Kconfig              | 2 +-
 drivers/net/wwan/iosm/iosm_ipc_pcie.c | 7 +++++++
 3 files changed, 9 insertions(+), 2 deletions(-)

-- 
2.25.1