Commit Graph

11 Commits

Author SHA1 Message Date
Martin Stein
28f81c4a9c base: avoid shift warning in register array
Fix #422
2013-01-08 11:36:52 +01:00
Martin Stein
66bec10276 Fix bug in MMIO framework and test it
Avoid that members of a inheritor overlay those of the
register- and MMIO-framework.

Beautify register- and MMIO-framework.
2012-07-31 12:08:03 +02:00
Norman Feske
cfda8ac4ae Add bitfield polling support to MMIO framework 2012-07-09 15:07:32 +02:00
Martin Stein
4b90cba132 Boolean fields and strict write on Registers/MMIO 2012-05-29 13:54:58 +02:00
Martin Stein
bf7a5c2b69 Review doc and style for release. ref #69 2012-02-23 10:42:12 +01:00
Martin Stein
70ae53fe3c Simplify interface of the MMIO framework, ref #69
Parameterize register and bitfield templates to always take their
bitwidth instead of the according types or width exponents as arguments.
2012-02-23 10:42:12 +01:00
Martin Stein
7044b264e6 Beautify class names in 'register.h' and 'mmio.h'
Replace 'Reg_array' in 'Genode::Mmio' by 'Register_array' and 'Subreg'
in 'Genode::Register', 'Genode::Mmio::Register'and
'Genode::Mmio::Register_array' by 'Bitfield'.

Update and beautify comments in the according headers and test programs.
2012-02-23 10:42:12 +01:00
Martin Stein
e1285335ab Replace 'Subreg_array' with 'Reg_array'.
'Reg_array' contains items whose width can be the width of the register
storage type at a max. Nethertheless they can be smaller and iterate all
subregs that are covered by the item width. The array uses as much
successive instances of its storage type as needed.

The test 'run/util_mmio' also tests these new features heavily.
2012-02-23 10:42:12 +01:00
Martin Stein
01bb7536dd Complement test for MMIO framework
The run script 'run/util_mmio.run' runs a test over basic
functionalities of 'Mmio::Register' and 'Mmio::Register::Subreg'. The
test covers the functions 'read' and 'bits', 'set', 'clear' and 'get'.

Inline function in 'Mmio::Register::Subreg' whose definition otherwise
looks ugly.
2012-02-23 10:42:12 +01:00
Martin Stein
9329b91aca Extract more generic parts from 'Genode::Mmio'
To accommodate CPU registers, which have a structured layout but don't
depend on a region base address, this patch introduces the generic
'Genode::Register' and 'Genode::Subreg' to 'register.h'.
'Mmio::Register' and 'Mmio::Subreg' inherit from them.
2012-02-23 10:42:11 +01:00
Martin Stein
1f75ebe9e5 First version of generic MMIO access framework
The MMIO access framework consists of an abstraction for a contiguous
MMIO area with a base address set dynamically. Within this class 'Mmio'
are declarations for 'Register' and 'Subreg'. These two can be
parameterized statically via template parameters to create arbitrary
MMIO structures.

Whereas 'Register' relies to a POD like subregion of 'Mmio', 'Subreg'
relies to a MMIO region within a specific 'Register' and therefore is
smaller or equal then the storage type of its superior 'Register'.

Furthermore with 'Reg_array' and 'Subreg_array', there exists the
possibility to handle arrays of uniform contiguous registers or subregs
by index. 'Subreg_array' therefore abstracts from the width boundary of
its superior 'Register' and handles a steady distance between its
members in addition. Both also check array size limits.

Related to issue #69.
2012-02-23 10:42:11 +01:00