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5f7dc5d750
linux-next/arch/alpha/kernel
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Ivan Kokshaysky 5f7dc5d750 alpha: fix RTC on marvel 
Unlike other alphas, marvel doesn't have real PC-style CMOS clock hardware
- RTC accesses are emulated via PAL calls.  Unfortunately, for unknown
reason these calls work only on CPU #0.  So current implementation for
arbitrary CPU makes CMOS_READ/WRITE to be executed on CPU #0 via IPI.
However, for obvious reason this doesn't work with standard
get/set_rtc_time() functions, where a bunch of CMOS accesses is done with
disabled interrupts.

Solved by making the IPI calls for entire get/set_rtc_time() functions,
not for individual CMOS accesses.  Which is also a lot more effective
performance-wise.

The patch is largely based on the code from Jay Estabrook.
My changes:
- tweak asm-generic/rtc.h by adding a couple of #defines to
  avoid a massive code duplication in arch/alpha/include/asm/rtc.h;
- sys_marvel.c: fix get/set_rtc_time() return values (Jay's FIXMEs).

NOTE: this fixes *only* LIB_RTC drivers.  Legacy (CONFIG_RTC) driver
wont't work on marvel.  Actually I think that we should just disable
CONFIG_RTC on alpha (maybe in 2.6.30?), like most other arches - AFAIK,
all modern distributions use LIB_RTC anyway.

Signed-off-by: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Richard Henderson <rth@twiddle.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-15 16:39:40 -08:00
..
alpha_ksyms.c Generic semaphore implementation 2008-04-17 10:42:34 -04:00
asm-offsets.c CRED: Separate task security context from task_struct 2008-11-14 10:39:16 +11:00
binfmt_loader.c get rid of special-casing the /sbin/loader on alpha 2009-01-03 11:45:54 -08:00
console.c ALPHA: support graphics on non-zero PCI domains 2007-06-01 08:18:29 -07:00
core_apecs.c [PATCH] alpha pt_regs cleanups: machine_check() 2006-10-08 12:32:36 -07:00
core_cia.c [PATCH] alpha pt_regs cleanups: machine_check() 2006-10-08 12:32:36 -07:00
core_irongate.c Introduce flags for reserve_bootmem() 2008-02-07 08:42:25 -08:00
core_lca.c [PATCH] alpha pt_regs cleanups: machine_check() 2006-10-08 12:32:36 -07:00
core_marvel.c alpha: fix RTC on marvel 2009-01-15 16:39:40 -08:00
core_mcpcia.c alpha: fixes for specific machine types 2007-04-17 16:36:27 -07:00
core_polaris.c [PATCH] alpha pt_regs cleanups: machine_check() 2006-10-08 12:32:36 -07:00
core_t2.c alpha: fix compile failures with gcc-4.3 (bug #10438) 2008-06-20 16:46:10 -07:00
core_titan.c alpha: remove remaining __FUNCTION__ occurrences 2008-04-28 08:58:27 -07:00
core_tsunami.c alpha: remove remaining __FUNCTION__ occurrences 2008-04-28 08:58:27 -07:00
core_wildfire.c [PATCH] alpha pt_regs cleanups: machine_check() 2006-10-08 12:32:36 -07:00
entry.S [CVE-2009-0029] Remove __attribute__((weak)) from sys_pipe/sys_pipe2 2009-01-14 14:15:15 +01:00
err_common.c PCI: Cleanup the includes of <linux/pci.h> 2007-05-02 19:02:35 -07:00
err_ev6.c PCI: Cleanup the includes of <linux/pci.h> 2007-05-02 19:02:35 -07:00
err_ev7.c alpha: build fixes 2007-12-17 19:28:16 -08:00
err_impl.h [PATCH] alpha pt_regs cleanups: machine_check() 2006-10-08 12:32:36 -07:00
err_marvel.c alpha: build fixes 2007-12-17 19:28:16 -08:00
err_titan.c alpha: build fixes 2007-12-17 19:28:16 -08:00
es1888.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
gct.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
head.S deal with alpha section warnings 2007-07-26 11:11:57 -07:00
init_task.c take init_fs to saner place 2008-12-31 18:07:42 -05:00
io.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
irq_alpha.c [PATCH] alpha_ksyms.c cleanup 2006-10-11 11:17:07 -07:00
irq_i8259.c [PATCH] alpha pt_regs cleanups: handle_irq() 2006-10-08 12:32:35 -07:00
irq_impl.h [PATCH] alpha pt_regs cleanups: handle_irq() 2006-10-08 12:32:35 -07:00
irq_pyxis.c [PATCH] alpha pt_regs cleanups: handle_irq() 2006-10-08 12:32:35 -07:00
irq_srm.c alpha: nautilus - fix compile failure with gcc-4.3 2009-01-15 16:39:40 -08:00
irq.c cpumask: convert kernel/irq 2009-01-01 10:12:26 +10:30
machvec_impl.h alpha: fix RTC on marvel 2009-01-15 16:39:40 -08:00
Makefile get rid of special-casing the /sbin/loader on alpha 2009-01-03 11:45:54 -08:00
module.c alpha: handle kcalloc failure 2008-04-28 08:58:27 -07:00
ns87312.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
osf_sys.c Merge branch 'v28-range-hrtimers-for-linus-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2008-10-23 10:53:02 -07:00
pci_impl.h PCI: alpha: use generic INTx swizzle from PCI core 2009-01-07 11:13:13 -08:00
pci_iommu.c alpha: use iommu_num_pages function in IOMMU code 2008-10-16 11:21:33 -07:00
pci-noop.c alpha: kill deprecated virt_to_bus 2008-02-05 09:44:21 -08:00
pci.c PCI: alpha: use generic INTx swizzle from PCI core 2009-01-07 11:13:13 -08:00
process.c cpumask: centralize cpu_online_map and cpu_possible_map 2008-12-13 21:19:41 +10:30
proto.h alpha: fix RTC on marvel 2009-01-15 16:39:40 -08:00
ptrace.c alpha: convert to generic sys_ptrace 2007-10-16 09:43:03 -07:00
setup.c cpumask: alpha: Introduce cpumask_of_{node,pcibus} to replace {node,pcibus}_to_cpumask 2008-12-26 22:23:41 +10:30
signal.c alpha: support new syscalls 2007-05-30 10:07:54 -07:00
smc37c93x.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
smc37c669.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
smp.c cpumask: centralize cpu_online_map and cpu_possible_map 2008-12-13 21:19:41 +10:30
srm_env.c alpha: remove remaining __FUNCTION__ occurrences 2008-04-28 08:58:27 -07:00
srmcons.c alpha: fix trivial section mismatch warnings 2007-07-16 09:05:37 -07:00
sys_alcor.c alpha: remove remaining __FUNCTION__ occurrences 2008-04-28 08:58:27 -07:00
sys_cabriolet.c [PATCH] alpha pt_regs cleanups: handle_irq() 2006-10-08 12:32:35 -07:00
sys_dp264.c PCI: alpha: use generic pci_swizzle_interrupt_pin() 2009-01-07 11:12:53 -08:00
sys_eb64p.c [PATCH] alpha pt_regs cleanups: handle_irq() 2006-10-08 12:32:35 -07:00
sys_eiger.c PCI: alpha: use generic pci_swizzle_interrupt_pin() 2009-01-07 11:12:53 -08:00
sys_jensen.c alpha: fix RTC on marvel 2009-01-15 16:39:40 -08:00
sys_marvel.c alpha: fix RTC on marvel 2009-01-15 16:39:40 -08:00
sys_miata.c PCI: alpha: use generic pci_swizzle_interrupt_pin() 2009-01-07 11:12:53 -08:00
sys_mikasa.c [PATCH] alpha pt_regs cleanups: machine_check() 2006-10-08 12:32:36 -07:00
sys_nautilus.c alpha: nautilus - fix hang on boot 2009-01-15 16:39:40 -08:00
sys_noritake.c PCI: alpha: use generic pci_swizzle_interrupt_pin() 2009-01-07 11:12:53 -08:00
sys_rawhide.c alpha: fixes for specific machine types 2007-04-17 16:36:27 -07:00
sys_ruffian.c PCI: alpha: use generic pci_swizzle_interrupt_pin() 2009-01-07 11:12:53 -08:00
sys_rx164.c [PATCH] alpha pt_regs cleanups: handle_irq() 2006-10-08 12:32:35 -07:00
sys_sable.c PCI: alpha: use generic pci_swizzle_interrupt_pin() 2009-01-07 11:12:53 -08:00
sys_sio.c alpha: remove remaining __FUNCTION__ occurrences 2008-04-28 08:58:27 -07:00
sys_sx164.c alpha: more fixes for specific machine types 2007-04-17 16:36:27 -07:00
sys_takara.c [PATCH] alpha pt_regs cleanups: handle_irq() 2006-10-08 12:32:35 -07:00
sys_titan.c cpumask: make irq_set_affinity() take a const struct cpumask 2008-12-13 21:20:26 +10:30
sys_wildfire.c [PATCH] alpha pt_regs cleanups: handle_irq() 2006-10-08 12:32:35 -07:00
systbls.S [CVE-2009-0029] Remove __attribute__((weak)) from sys_pipe/sys_pipe2 2009-01-14 14:15:15 +01:00
time.c alpha: fix RTC on marvel 2009-01-15 16:39:40 -08:00
traps.c false __cpuinit positives on alpha 2008-11-30 10:03:35 -08:00
vmlinux.lds.S Alpha Linux kernel fails with inconsistent kallsyms data 2008-07-04 10:40:09 -07:00