On Tue, 2018-03-06 at 18:47 +0800, John Garry wrote:
> This patchset supports the IPMI-bt device attached to the Low-Pin-
> interface implemented on Hisilicon Hip06/Hip07 SoC.
> | LPC host|
> | |
> | |
> V V
> | BT(ipmi)|
> When master accesses those peripherals beneath the Hip06/Hip07 LPC, a
> LPC driver is needed to make LPC host generate the standard LPC I/O
> cycles with
> the target peripherals'I/O port addresses. But on curent arm64 world,
> there is
> no real I/O accesses. All the I/O operations through in/out accessors
> are based
> on MMIO ranges; on Hip06/Hip07 LPC the I/O accesses are performed
> through driver
> specific accessors rather than MMIO.
> To solve this issue and keep the relevant existing peripherals'
> drivers untouched,
> this patchset:
> - introduces a generic I/O space management framework, logical PIO,
> to support
> I/O operations on host controllers operating either on MMIO
> buses or on buses
> requiring specific driver I/O accessors;
> - redefines the in/out accessors to provide a unified interface for
> both MMIO
> and driver specific I/O operations. Using logical PIO, th call of
> in/out() from
> the host children drivers, such as ipmi-si, will be redirected to
> corresponding device-specific I/O hooks to perform the I/O
> Based on this patch-set, all the I/O accesses to Hip06/Hip07 LPC
> peripherals can
> be supported without any changes on the existing ipmi-si driver.
> The whole patchset has been tested on Hip07 D05 board both using DTB
> and ACPI.
> V15 thread here: https://lkml.org/lkml/2018/2/26/584
Thanks for an update.
Though I answered to previous thread.
Summary: I'm fine with the series as long as maintainers are fine
(Rafael et al.). On personal side I think that the handler approach is
better. Details are in v15 thread.
Andy Shevchenko <andriy.shevche...@linux.intel.com>
Intel Finland Oy