[pc_serial] [PATCH] Fix build for Haiku

[andreasf]

Here's an initial stab at making the pc_serial driver compile for Haiku target:

• Clean up the BONE/R5/Haiku tty_module_info mess a little.
• The functions either need to be static in both header and source, or not at all.
• Haiku does not seem to have a ddbackground function.

With these changes, I can successfully do the following in my UserBuildConfig:

AddDriversToHaikuImage ports : pc_serial ;

It does not yet work for my card though.

[andreasf]

proposed patch

[mmu_man]

Of course it does not work because there is no tty module yet. The header only describes a BeOS-compatible module but it will probably not be done this way.

[andreasf]

I don't fully understand. Is something apart from the static issue wrong with my patch? What do you mean with "tty module"? There appears to be a tty add-on that gets installed by default.

I'm looking for a short-term way of testing my serial-related patches for Mono, whether with my built-in serial port (that the kernel uses by default) or with a PCI card (OxfordSemi 950a) or with a USB adapter (067b:2303). None are listed as /dev/ports/serialX at this time, so any pointers how to improve things would be appreciated.

[mmu_man]

The tty binary is the tty driver, which publishes /dev/tt/*, not the tty manager. As such we do not have any in Haiku yet, so this only fixes the build but doesn't make it usable. Though it should be possible to use the BeOS tty manager for testing. But the current API is not the one which will be used later on.

[mmu_man]

Fixed differently as hrev36515.

[mmlr]

I'm currently working on the tty module. It will have a different API than the old ones though, pretty much like the internal API the tty driver currently uses. So the drivers will need to be ported to it. I've already done that for usb_serial, however it is not yet complete and does not yet fully work, so I won't commit it right now.

[andreasf]

I've tried copying the R5.0.3 /beos/system/add-ons/kernel/bus_managers/tty to hrev36576 /system/add-ons/kernel/bus_managers/tty.

There's still nothing under /dev/ports/ and no mention of pc_serial in syslog.

Is my way of adding them to the image wrong? Anything else I need to copy or symlink?

[pulkomandy]

The driver is working now. However to get it to use your serial port you must make sure the kernel does not use it for serial debug. Disabling serial debug is not enough, you must actually change the serial port to an unused one in the kernel settings file.

[korli]

This reminds me we don't have man like pages for drivers, where to put such useful information...