lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  PHC 
Open Source and information security mailing list archives
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Date:   Fri, 25 Dec 2020 19:16:46 -0500
From:   Gabriel Somlo <>
Subject: [PATCH v4 0/3] drivers/soc/litex: support 32-bit subregisters, 64-bit CPUs

This series expands on commit 22447a99c97e ("drivers/soc/litex: add LiteX
SoC Controller driver"), adding support for handling both 8- and 32-bit
LiteX CSR (MMIO) subregisters, on both 32- and 64-bit CPUs.

Notes v4:
	- improved "eloquence" of some 3/3 commit blurb paragraphs
	- fixed instance of "disgusting" comment style :)
	- litex_[get|set]_reg() now using size_t for 'reg_size' argument
	- slightly tighter shift calculation in litex_set_reg()

Notes v3:
	- split into smaller, more self-explanatory patches
	- more detailed commit blurb for "main payload" (3/3) patch
	- eliminate compiler warning on 32-bit architectures

Notes v2:
	- fix typo (s/u32/u64/) in litex_read64().

Notes v1:
	- LITEX_SUBREG_SIZE now provided by Kconfig.
	- it's not LITEX_REG_SIZE, but rather LITEX_SUBREG_ALIGN!
	- move litex_[get|set]_reg() to include/linux/litex.h and mark
	  them as "static inline";
	- redo litex_[read|write][8|16|32|64]() using litex_[get|set]_reg()
	  (compiler should produce code as efficient as hardcoded shifts,
	   but also automatically matching LITEX_SUBREG_SIZE).

Gabriel Somlo (3):
  drivers/soc/litex: move generic accessors to litex.h
  drivers/soc/litex: separate MMIO from subregister offset calculation
  drivers/soc/litex: support 32-bit subregisters, 64-bit CPUs

 drivers/soc/litex/Kconfig          |  12 +++
 drivers/soc/litex/litex_soc_ctrl.c |  76 +--------------
 include/linux/litex.h              | 151 +++++++++++++++++++----------
 3 files changed, 115 insertions(+), 124 deletions(-)


Powered by blists - more mailing lists