kernel.git/arch/m68k/mac/macints.c, branch linux-4.11.y

sched/headers: Prepare for new header dependencies before moving code to

2017-03-02T07:42:34Z

We are going to split out of , which will have to be picked up from other headers and a couple of .c files. Create a trivial placeholder file that just maps to to make this patch obviously correct and bisectable. Include the new header in the files that are going to need it. Acked-by: Linus Torvalds Cc: Mike Galbraith Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar

m68k/mac: Clean up interrupt debug macros and printk statements

2017-02-09T13:18:19Z

Mac interrupt code has been debugged. The Penguin deficiencies that still cause unhandled interrupts aren't fixable here. Besides, interrupts are fast and frequent and these printk statements were never really useful IMO. Remove them. Signed-off-by: Finn Thain Signed-off-by: Geert Uytterhoeven

m68k/mac: Remove SHUTUP_SONIC interrupt hack

2017-02-09T13:18:19Z

In macints.c there is some startup code which disables the SONIC interrupt in an attempt to avoid an unhandled slot interrupt, which would be fatal. This only works on those machines where the SONIC device is on-board. When the mac_sonic driver is built-in, there's little point in doing this, because the device will be initialized a few seconds later anyway. But when mac_sonic is a module, the window for an unhandled interrupt is longer. Either way, we've already run the gauntlet for 5 or 10 seconds by the time we get around to disabling this particular device. It's only by sheer luck that we got this far. Really, this is too little too late. The general problem of unhandled early interrupts also affects other devices on other models. There are better ways to resolve this problem. 1) When using the Penguin bootloader, boot Mac OS with extensions disabled (by holding down the shift key at startup or by use of the Extensions Manager control panel). The Penguin docs already contain this advice, as it is always effective. 2) Have the Penguin bootloader disable the device. It already attempts to disable slot interrupts. But since some hardware cannot mask slot interrupts, Penguin should probably close the relevant device drivers. 3) Use Emile instead of Penguin. AFAIK the boot ROM never enables network device interrupts and hence they don't need to be disabled. Remove this hack. It requires maintenance and it doesn't solve the problem. It improves the odds for a few models, but so does setting CONFIG_MAC_SONIC=y. Signed-off-by: Finn Thain Reviewed-by: Laurent Vivier Signed-off-by: Geert Uytterhoeven

m68k/mac: Improve NMI handler

2017-02-09T13:18:18Z

mac_nmi_handler() is useless in its present form and locks up my PowerBook 180. Let's throw out the dead code and make it do something useful: print a register dump and a stack trace. mac_debug_handler() is also dead code. Remove it along with its static data. Signed-off-by: Finn Thain Signed-off-by: Geert Uytterhoeven

m68k/mac: Kill psc_present

2015-11-23T08:58:30Z

The presence of the Apple Peripheral System Controller (PSC) can be tested for by just checking its base address pointer. Signed-off-by: Geert Uytterhoeven

m68k/mac: oss irq fixes

2011-12-10T18:52:47Z

The IOP driver calls into the OSS driver to enable its IRQ. This undesirable coupling between drivers only exists because the OSS driver doesn't correctly handle all of its machspec IRQs. Fix OSS handling of enable/disable for VIA1 IRQs (8 thru 15) which includes MAC_IRQ_ADB. Back when I implemented pmac_zilog support I redefined IRQ_MAC_SCC incorrectly. Change this to a machspec IRQ so that it works on OSS. Clean up the unused OSS audio IRQ and OSS_IRQLEV_* cruft that only confuses things. Fix the OSS description in macints.c and remove an obsolete comment. Don't enable the VIA1 irq before registering the handler. Signed-off-by: Finn Thain Signed-off-by: Geert Uytterhoeven

m68k/mac: fix nubus slot irq disable and shutdown

2011-12-10T18:52:47Z

Improve NuBus slot interrupt handling code and documentation. This patch fixes the NuBus NIC (mac8390) in my Quadra 700. Signed-off-by: Finn Thain Signed-off-by: Geert Uytterhoeven

m68k/mac: enable via_alt_mapping on performa 580

2011-12-10T18:52:46Z

Enable via_alt_mapping on the Performa 588 and tidy up related documentation. I'm betting that remapped IRQs work just fine on the Performa 580 series since it works on the LC 630 and the logic board part numbers are reputedly the same. And the consensus seems to be that the Mac TV is essentially a Performa 550, not dissimilar to the Performa 520, so set the via_type accordingly. Signed-off-by: Finn Thain Signed-off-by: Geert Uytterhoeven

m68k/mac: cleanup forward declarations

2011-12-10T18:52:46Z

Move some forward declarations into header files and adjust includes. Signed-off-by: Finn Thain Signed-off-by: Geert Uytterhoeven

m68k/mac: cleanup mac_irq_pending

2011-12-10T18:52:46Z

mac_irq_pending() has only one caller (mac_esp.c). Nothing tests for Baboon, PSC or OSS pending interrupts. Until that need arises, let's keep it simple and remove all the unused abstraction. Replace it with a routine to check for SCSI DRQ. Signed-off-by: Finn Thain Signed-off-by: Geert Uytterhoeven