Master Ticket: Updating audio drivers to co-exist with OpenSound

[mmadia]

This is a master ticket for tracking the updates of the various audio drivers, such that they can co-exist with OpenSound. (un)reserve_device needs to be utilized by Haiku's drivers, such as browser:haiku/trunk/src/add-ons/kernel/drivers/audio/hda/driver.cpp#L56

		if (info.class_base == PCI_multimedia
			&& info.class_sub == PCI_hd_audio) {
#ifdef __HAIKU__
			if ((*gPci->reserve_device)(info.bus, info.device, info.function, "hda",
				&gCards[gNumCards]) < B_OK) {
				dprintf("HDA: Failed to reserve PCI:%d:%d:%d\n",
					info.bus, info.device, info.function);
				continue;
			}
#endif

and browser:haiku/trunk/src/add-ons/kernel/drivers/audio/hda/driver.cpp#L95

#ifdef __HAIKU__
		(*gPci->unreserve_device)(gCards[i].pci_info.bus, gCards[i].pci_info.device,
			gCards[i].pci_info.function, "hda", &gCards[i]);
#endif

Appears to utilize (un)reserve_device

• ac97/ali5451 (hrev39333, hrev39337)
• ac97/auich
• ac97/auvia
• ac97/es1370
• cmedia (hrev39335, hrev39339)
• ice1712 (hrev39338)
• echo
• emuxki
• hda

Does not appear to utilize (un)reserve_device

• ac97/geode
• ac97/ich
• ac97/ichaudio
• module_driver
• null (don't do. doesn't use PCI)
• sb16 (don't do. ISA)
• sis7018 (don't do. see comments)
• usb_audio (don't do. see comments)

note: listing the devices here for now. new tickets could be created as patches are submitted for each device

note: it appears some drivers' uninit_driver() do not call unreserve_device

[siarzhuk]

Replying to mmadia:

Do not spend time patching following:

• sis7018

This one is legacy R3 compatible driver. Upcoming version will use multiaudio anyway. As soon as I have intention to finish it in my deveveloper branch. ;-)

• usb_audio

This one doesn't share any resources on PCI due it's nature. :-D And will be replaced too after Haiku USB bus managers become full isochronous transfer support.

[siarzhuk]

Replying to mmadia:

• sis7018 (don't do. see comments)

Mentioned in my comment "branch version" of sis7018 driver updated in hrev39350.

[luroh]

Moving out of R1 milestone (Prop #26).

[bagen55596]

that's all the useful information I was looking for. thank you for sharing! ​Vampire Survivors