netdev - Re: [PATCH v11 00/23] add type2 device basic support

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Message-ID: <Z9HK9A6Dh3h4Ui1q@aschofie-mobl2.lan>
Date: Wed, 12 Mar 2025 10:57:08 -0700
From: Alison Schofield <alison.schofield@...el.com>
To: alejandro.lucero-palau@....com
Cc: linux-cxl@...r.kernel.org, netdev@...r.kernel.org,
	dan.j.williams@...el.com, edward.cree@....com, davem@...emloft.net,
	kuba@...nel.org, pabeni@...hat.com, edumazet@...gle.com,
	dave.jiang@...el.com, Alejandro Lucero <alucerop@....com>
Subject: Re: [PATCH v11 00/23] add type2 device basic support

On Mon, Mar 10, 2025 at 09:03:17PM +0000, alejandro.lucero-palau@....com wrote:
> From: Alejandro Lucero <alucerop@....com>

Hi Alejandro,

Can you restore a cover letter here? 
I'm particularly looking for more context around kernel driven region
creation.

--Alison

> 
> v11 changes:
>  - Dropping the use of cxl_memdev_state and going back to using
>    cxl_dev_state.
>  - Using a helper for an accel driver to allocate its own cxl-related
>    struct embedding cxl_dev_state.
>  - Exporting the required structs in include/cxl/cxl.h for an accel
>    driver being able to know the cxl_dev_state size required in the
>    previously mentioned helper for allocation.
>  - Avoid using any struct for dpa initialization by the accel driver
>    adding a specific function for creating dpa partitions by accel
>    drivers without a mailbox.
> 
> Alejandro Lucero (23):
>   cxl: add type2 device basic support
>   sfc: add cxl support
>   cxl: move pci generic code
>   cxl: move register/capability check to driver
>   cxl: add function for type2 cxl regs setup
>   sfc: make regs setup with checking and set media ready
>   cxl: support dpa initialization without a mailbox
>   sfc: initialize dpa
>   cxl: prepare memdev creation for type2
>   sfc: create type2 cxl memdev
>   cxl: define a driver interface for HPA free space enumeration
>   fc: obtain root decoder with enough HPA free space
>   cxl: define a driver interface for DPA allocation
>   sfc: get endpoint decoder
>   cxl: make region type based on endpoint type
>   cxl/region: factor out interleave ways setup
>   cxl/region: factor out interleave granularity setup
>   cxl: allow region creation by type2 drivers
>   cxl: add region flag for precluding a device memory to be used for dax
>   sfc: create cxl region
>   cxl: add function for obtaining region range
>   sfc: update MCDI protocol headers
>   sfc: support pio mapping based on cxl
> 
>  drivers/cxl/core/core.h               |     2 +
>  drivers/cxl/core/hdm.c                |    83 +
>  drivers/cxl/core/mbox.c               |    30 +-
>  drivers/cxl/core/memdev.c             |    47 +-
>  drivers/cxl/core/pci.c                |   115 +
>  drivers/cxl/core/port.c               |     8 +-
>  drivers/cxl/core/region.c             |   411 +-
>  drivers/cxl/core/regs.c               |    39 +-
>  drivers/cxl/cxl.h                     |   112 +-
>  drivers/cxl/cxlmem.h                  |   103 +-
>  drivers/cxl/cxlpci.h                  |    23 +-
>  drivers/cxl/mem.c                     |    26 +-
>  drivers/cxl/pci.c                     |   118 +-
>  drivers/cxl/port.c                    |     5 +-
>  drivers/net/ethernet/sfc/Kconfig      |     9 +
>  drivers/net/ethernet/sfc/Makefile     |     1 +
>  drivers/net/ethernet/sfc/ef10.c       |    50 +-
>  drivers/net/ethernet/sfc/efx.c        |    15 +-
>  drivers/net/ethernet/sfc/efx_cxl.c    |   162 +
>  drivers/net/ethernet/sfc/efx_cxl.h    |    40 +
>  drivers/net/ethernet/sfc/mcdi_pcol.h  | 13645 +++++++++---------------
>  drivers/net/ethernet/sfc/net_driver.h |    12 +
>  drivers/net/ethernet/sfc/nic.h        |     3 +
>  include/cxl/cxl.h                     |   269 +
>  include/cxl/pci.h                     |    36 +
>  tools/testing/cxl/Kbuild              |     1 -
>  tools/testing/cxl/test/mock.c         |    17 -
>  27 files changed, 6186 insertions(+), 9196 deletions(-)
>  create mode 100644 drivers/net/ethernet/sfc/efx_cxl.c
>  create mode 100644 drivers/net/ethernet/sfc/efx_cxl.h
>  create mode 100644 include/cxl/cxl.h
>  create mode 100644 include/cxl/pci.h
> 
> 
> base-commit: 0a14566be090ca51a32ebdd8a8e21678062dac08
> -- 
> 2.34.1
> 
>