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0e4c2eeb75
linux/arch/alpha/kernel
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Lorenzo Pieralisi 0e4c2eeb75 alpha/PCI: Replace pci_fixup_irqs() call with host bridge IRQ mapping hooks 
The pci_fixup_irqs() function allocates IRQs for all PCI devices present in
a system; those PCI devices possibly belong to different PCI bus trees (and
possibly rooted at different host bridges) and may well be enabled (ie
probed and bound to a driver) by the time pci_fixup_irqs() is called when
probing a given host bridge driver.

Furthermore, current kernel code relying on pci_fixup_irqs() to assign
legacy PCI IRQs to devices does not work at all for hotplugged devices in
that the code carrying out the IRQ fixup is called at host bridge driver
probe time, which just cannot take into account devices hotplugged after
the system has booted.

The introduction of map/swizzle function hooks in struct pci_host_bridge
allows us to define per-bridge map/swizzle functions that can be used at
device probe time in PCI core code to allocate IRQs for a given device
(through pci_assign_irq()).

Convert PCI host bridge initialization code to the
pci_scan_root_bus_bridge() API (that allows to pass a struct
pci_host_bridge with initialized map/swizzle pointers) and remove the
pci_fixup_irqs() call from arch code.

Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
2017-08-03 16:25:28 -05:00
..
.gitignore
asm-offsets.c
audit.c alpha: Enable system-call auditing support. 2014-01-31 09:21:55 -08:00
binfmt_loader.c get rid of pt_regs argument of ->load_binary() 2012-11-28 21:53:38 -05:00
console.c TTY:vt: convert remain take_over_console's users to do_take_over_console 2013-05-20 22:29:27 -07:00
core_apecs.c Disintegrate asm/system.h for Alpha 2012-03-28 18:11:12 +01:00
core_cia.c Disintegrate asm/system.h for Alpha 2012-03-28 18:11:12 +01:00
core_irongate.c PCI: Remove unnecessary #includes of <asm/pci.h> 2015-06-08 07:56:09 -05:00
core_lca.c Fix common misspellings 2011-03-31 11:26:23 -03:00
core_marvel.c char/genrtc: remove alpha support 2016-06-04 00:23:02 +02:00
core_mcpcia.c alpha: Remove set but unused variables. 2011-04-17 14:41:30 -07:00
core_polaris.c
core_t2.c Disintegrate asm/system.h for Alpha 2012-03-28 18:11:12 +01:00
core_titan.c arch/alpha/kernel: Add kmalloc NULL tests 2009-11-30 15:38:19 -05:00
core_tsunami.c alpha: include module.h to fix modpost on Tsunami 2012-05-02 15:54:06 -04:00
core_wildfire.c
entry.S alpha: Enable system-call auditing support. 2014-01-31 09:21:55 -08:00
err_common.c
err_ev6.c alpha: delete non-required instances of <linux/init.h> 2015-05-26 10:01:48 -07:00
err_ev7.c alpha: titan and marvel build fixes 2009-05-02 15:36:10 -07:00
err_impl.h Disintegrate asm/system.h for Alpha 2012-03-28 18:11:12 +01:00
err_marvel.c Fix common misspellings 2011-03-31 11:26:23 -03:00
err_titan.c alpha: Remove set but unused variables. 2011-04-17 14:41:30 -07:00
es1888.c
gct.c
head.S Disintegrate asm/system.h for Alpha 2012-03-28 18:11:12 +01:00
io.c
irq_alpha.c alpha: Use qemu+cserve provided high-res clock and alarm. 2013-11-16 16:33:21 -08:00
irq_i8259.c alpha: Convert to new irq function names 2011-03-29 14:47:58 +02:00
irq_impl.h alpha: i8259, alcor, jensen wildfire: Convert irq_chip 2011-03-02 14:57:55 -05:00
irq_pyxis.c alpha: Convert to new irq function names 2011-03-29 14:47:58 +02:00
irq_srm.c alpha: Convert to new irq function names 2011-03-29 14:47:58 +02:00
irq.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
machvec_impl.h alpha: move exports to actual definitions 2016-08-07 23:47:18 -04:00
Makefile alpha: move exports to actual definitions 2016-08-07 23:47:18 -04:00
module.c module: use a structure to encapsulate layout. 2015-12-04 22:46:25 +01:00
osf_sys.c osf_sigstack(): switch to put_user() 2017-05-27 16:38:39 -04:00
pc873xx.c alpha: Detect Super IO chip, no IDE on Avanti, enable EPP19 2010-06-15 14:19:08 -04:00
pc873xx.h alpha: Detect Super IO chip, no IDE on Avanti, enable EPP19 2010-06-15 14:19:08 -04:00
pci_impl.h alpha/PCI: replace pci_probe_only with pci_flags 2012-02-23 20:18:56 -07:00
pci_iommu.c treewide: Constify most dma_map_ops structures 2017-01-24 12:23:35 -05:00
pci-noop.c treewide: Constify most dma_map_ops structures 2017-01-24 12:23:35 -05:00
pci-sysfs.c alpha/PCI: Call iomem_is_exclusive() for IORESOURCE_MEM, but not IORESOURCE_IO 2016-04-25 15:59:50 -05:00
pci.c alpha/PCI: Replace pci_fixup_irqs() call with host bridge IRQ mapping hooks 2017-08-03 16:25:28 -05:00
perf_event.c alpha: Replace __get_cpu_var 2014-08-26 13:45:53 -04:00
process.c sched/headers: Prepare for new header dependencies before moving code to <linux/sched/task_stack.h> 2017-03-02 08:42:36 +01:00
proto.h alpha: Use qemu+cserve provided high-res clock and alarm. 2013-11-16 16:33:21 -08:00
ptrace.c sched/headers: Prepare for new header dependencies before moving code to <linux/sched/task_stack.h> 2017-03-02 08:42:36 +01:00
rtc.c rtc: cmos: move mc146818rtc code out of asm-generic/rtc.h 2016-06-04 00:20:00 +02:00
setup.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
signal.c sched/headers: Prepare for new header dependencies before moving code to <linux/sched/task_stack.h> 2017-03-02 08:42:36 +01:00
smc37c93x.c alpha: Remove set but unused variables. 2011-04-17 14:41:30 -07:00
smc37c669.c alpha: remove mysterious if zero-ed out includes 2012-07-30 17:25:11 -07:00
smp.c sched/headers: Move task->mm handling methods to <linux/sched/mm.h> 2017-03-03 01:43:28 +01:00
srm_env.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
srmcons.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
sys_alcor.c Disintegrate asm/system.h for Alpha 2012-03-28 18:11:12 +01:00
sys_cabriolet.c Disintegrate asm/system.h for Alpha 2012-03-28 18:11:12 +01:00
sys_dp264.c alpha: Don't if-out dp264_device_interrupt. 2013-07-19 13:54:26 -07:00
sys_eb64p.c Disintegrate asm/system.h for Alpha 2012-03-28 18:11:12 +01:00
sys_eiger.c PCI: Remove unnecessary #includes of <asm/pci.h> 2015-06-08 07:56:09 -05:00
sys_jensen.c alpha: Reorganize rtc handling 2013-11-16 16:33:16 -08:00
sys_marvel.c alpha: clean up unnecessary MSI/MSI-X capability find 2015-05-26 10:01:44 -07:00
sys_miata.c Disintegrate asm/system.h for Alpha 2012-03-28 18:11:12 +01:00
sys_mikasa.c Disintegrate asm/system.h for Alpha 2012-03-28 18:11:12 +01:00
sys_nautilus.c alpha/PCI: Replace pci_fixup_irqs() call with host bridge IRQ mapping hooks 2017-08-03 16:25:28 -05:00
sys_noritake.c Disintegrate asm/system.h for Alpha 2012-03-28 18:11:12 +01:00
sys_rawhide.c Disintegrate asm/system.h for Alpha 2012-03-28 18:11:12 +01:00
sys_ruffian.c Disintegrate asm/system.h for Alpha 2012-03-28 18:11:12 +01:00
sys_rx164.c Disintegrate asm/system.h for Alpha 2012-03-28 18:11:12 +01:00
sys_sable.c Disintegrate asm/system.h for Alpha 2012-03-28 18:11:12 +01:00
sys_sio.c Disintegrate asm/system.h for Alpha 2012-03-28 18:11:12 +01:00
sys_sx164.c Disintegrate asm/system.h for Alpha 2012-03-28 18:11:12 +01:00
sys_takara.c Disintegrate asm/system.h for Alpha 2012-03-28 18:11:12 +01:00
sys_titan.c alpha: irq: remove deprecated use of IRQF_DISABLED 2013-04-07 12:59:30 -07:00
sys_wildfire.c Disintegrate asm/system.h for Alpha 2012-03-28 18:11:12 +01:00
systbls.S alpha: Wire up all missing implemented syscalls 2015-05-26 10:01:50 -07:00
time.c clocksource: Use a plain u64 instead of cycle_t 2016-12-25 11:04:12 +01:00
traps.c alpha: add a helper for emitting exception table entries 2017-03-28 18:23:19 -04:00
vmlinux.lds.S nmi_backtrace: generate one-line reports for idle cpus 2016-10-07 18:46:30 -07:00