mbox series

[v4,0/2] Allow parameter in smc/hvc calls

Message ID 20230418185659.29745-1-quic_nkela@quicinc.com
Headers
Series Allow parameter in smc/hvc calls |

Message

Nikunj Kela April 18, 2023, 6:56 p.m. UTC 
  Currently, smc/hvc calls are made with parameters set
to zeros. We are using multiple scmi instances within
a VM. We are sharing the same smc-id(func_id) with all
scmi instance. The hypervisor needs a way to distinguish
among hvc calls made from different instances.

This patch series introduces new compatible string which
can be used to pass shmem channel address as parameters
to smc/hvc calls.

---
v4 -> split shmem address into 4KB-pages and offset

v3 -> pass shmem channel address as parameter

v2 -> fix the compilation erros on 32bit platform(see below)
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202304100606.kUjhsRYf-lkp@intel.com/

v1 -> original patches

Nikunj Kela (2):
  dt-bindings: firmware: arm,scmi: support for parameter in smc/hvc call
  firmware: arm_scmi: Augment SMC/HVC to allow optional parameters

 .../devicetree/bindings/firmware/arm,scmi.yaml     |  8 +++++++-
 drivers/firmware/arm_scmi/driver.c                 |  1 +
 drivers/firmware/arm_scmi/smc.c                    | 14 +++++++++++++-
 3 files changed, 21 insertions(+), 2 deletions(-)

Comments

Nikunj Kela April 25, 2023, 2:01 p.m. UTC | #1 
Hi Sudeep, could you please review v4 patches. Thanks!


On 4/18/2023 11:56 AM, Nikunj Kela wrote:
> Currently, smc/hvc calls are made with parameters set
> to zeros. We are using multiple scmi instances within
> a VM. We are sharing the same smc-id(func_id) with all
> scmi instance. The hypervisor needs a way to distinguish
> among hvc calls made from different instances.
>
> This patch series introduces new compatible string which
> can be used to pass shmem channel address as parameters
> to smc/hvc calls.
>
> ---
> v4 -> split shmem address into 4KB-pages and offset
>
> v3 -> pass shmem channel address as parameter
>
> v2 -> fix the compilation erros on 32bit platform(see below)
> Reported-by: kernel test robot <lkp@intel.com>
> Closes: https://lore.kernel.org/oe-kbuild-all/202304100606.kUjhsRYf-lkp@intel.com/
>
> v1 -> original patches
>
> Nikunj Kela (2):
>    dt-bindings: firmware: arm,scmi: support for parameter in smc/hvc call
>    firmware: arm_scmi: Augment SMC/HVC to allow optional parameters
>
>   .../devicetree/bindings/firmware/arm,scmi.yaml     |  8 +++++++-
>   drivers/firmware/arm_scmi/driver.c                 |  1 +
>   drivers/firmware/arm_scmi/smc.c                    | 14 +++++++++++++-
>   3 files changed, 21 insertions(+), 2 deletions(-)
>