linux-kernel - [PATCHv2 0/2] uio:powerpc:mpc85xx: l2-cache-sram uio driver

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Date:   Tue, 14 Jun 2022 22:57:33 -0700
From:   Wang Wenhu <wenhu.wang@...mail.com>
To:     gregkh@...uxfoundation.org, arnd@...db.de, hao.wu@...el.com,
        trix@...hat.com, mdf@...nel.org, yilun.xu@...el.com,
        bhelgaas@...gle.com, akpm@...ux-foundation.org,
        linux-fpga@...r.kernel.org, linux-pci@...r.kernel.org,
        linux-mm@...ck.org
Cc:     christophe.leroy@...roup.eu, linux-kernel@...r.kernel.org,
        linuxppc-dev@...ts.ozlabs.org, mpe@...erman.id.au,
        wenhu.wang@...mail.com
Subject: [PATCHv2 0/2] uio:powerpc:mpc85xx: l2-cache-sram uio driver

This series try to push an uio driver which works on freescale mpc85xx
to configure its l2-cache-sram as a block of SRAM and enable user level
application access of the SRAM.

1/2: For coding-style consideration of macro CONFIG_HAVE_IOREMAP_PORT;
2/2: Implementation of the uio driver.

This is the second version, which addressed some commets:
1. Use __be32 instead of u32 for the big-endian data declarations;
2. Remove "static inline" version of generic_access_phys definition in .h file
and give a version of no-op definition in mm/memory.c;
3. Use generic ioremap_cache instead of ioremap_coherent

For v1, see:
1/2: https://lore.kernel.org/all/20220610144348.GA595923@bhelgaas/T/
2/2: https://lore.kernel.org/lkml/YqHy1uXwCLlJmftr@kroah.com/

Wang Wenhu (2):
  mm: eliminate ifdef of HAVE_IOREMAP_PROT in .c files
  uio:powerpc:mpc85xx: l2-cache-sram uio driver implementation

 drivers/char/mem.c                    |   2 -
 drivers/fpga/dfl-afu-main.c           |   2 -
 drivers/pci/mmap.c                    |   2 -
 drivers/uio/Kconfig                   |  14 ++
 drivers/uio/Makefile                  |   1 +
 drivers/uio/uio.c                     |   2 -
 drivers/uio/uio_fsl_85xx_cache_sram.c | 288 ++++++++++++++++++++++++++
 mm/memory.c                           |  13 +-
 8 files changed, 312 insertions(+), 12 deletions(-)
 create mode 100644 drivers/uio/uio_fsl_85xx_cache_sram.c

-- 
2.25.1