[U-Boot] [PATCH] mmc: seperate block number into small parts for multi-write cmd

[Wolfgang Denk <wd@denx.de>]

Dear Lei Wen,

In message <AANLkTiny6iZRXoh=Aff1fVPz__B4Sfba1+m+=H97V7ox@mail.gmail.com> you wrote:
> 
> > Please explain why that shouldnot be possible. It's the driver that
> > accesses your hardware, so it has full control over everything going
> > on.
> >
> You are right, certainly driver cuold make this, but this would bring
> a lot of complexity for it...
> As I mentioned in the last mail, the multi-write command semantic
> consist by multi-write command + stop transmission command.
> 
> Send what kind of command is the job of platform, and how to send the
> command is the job of driver.
> If I implement this seperation in the driver level, the driver must
> send another stop transmission command during each internal
> seperation,
> which is so ugly and error prone..
> 
> So this is why I intend to put the code in the platform level...

But my (limited!) understanding is that it's not a platform problem
you are solving, but one of this special kind of controller, which
nobody else would ever run into.

Is this understanding correct?


Best regards,

Wolfgang Denk

-- 
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
Real computer scientists despise the idea of actual  hardware.  Hard-
ware has limitations, software doesn't. It's a real shame that Turing
machines are so poor at I/O.