Hi Bartlomiej,

On Fri, Dec 30, 2016 at 3:01 PM, Bartlomiej Zolnierkiewicz
[off-list ref] wrote:

This patchset adds m68k/Atari Falcon PATA support to libata.

Thanks for your series!

That leaves us with 4 to go ;-)

    CONFIG_BLK_DEV_GAYLE
    CONFIG_BLK_DEV_BUDDHA
    CONFIG_BLK_DEV_MAC_IDE
    CONFIG_BLK_DEV_Q40IDE

Note that using libata instead of the legacy IDE driver increases kernel size.

After enabling libata:

    CONFIG_ATA=y
    CONFIG_ATA_VERBOSE_ERROR=y
    CONFIG_ATA_SFF=y
    CONFIG_PATA_FALCON=y

an atari_defconfig kernel grew by:

    add/remove: 775/0 grow/shrink: 753/41 up/down: 98999/-242 (98757)

After disabling CONFIG_IDE:

    add/remove: 0/589 grow/shrink: 0/12 up/down: 0/-62835 (-62835)

So the net result is:

    add/remove: 775/589 grow/shrink: 749/51 up/down: 98886/-62964 (35922)

Disabling CONFIG_ATA_VERBOSE_ERROR saved 1380 bytes, which is less than the
value advertised by Kconfig (6KB).

The major difference in the new libata's pata_falcon host
driver when compared to legacy IDE's falconide host driver is
that we are using polled PIO mode and thus avoiding the need
for STDMA locking magic altogether.

I'll let the Atari experts (Michael?) comment on that...

Tested under ARAnyM emulator.

Works indeed fine on ARAnyM.
Unfortunately I can't test it on real hardware...

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds