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path: root/include/asm-powerpc/machdep.h
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2006-01-09[PATCH] cell: enable pause(0) in cpu_idleArnd Bergmann
This patch enables support for pause(0) power management state for the Cell Broadband Processor, which is import for power efficient operation. The pervasive infrastructure will in the future enable us to introduce more functionality specific to the Cell's pervasive unit. From: Maximino Aguilar <maguilar@us.ibm.com> Signed-off-by: Arnd Bergmann <arndb@de.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-01-09[PATCH] powerpc: Propagate regs through to machine_crash_shutdownMichael Ellerman
Currently machine_crash_shutdown() gets a struct pt_regs, but doesn't pass it through to the ppc_md function, it should. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-01-09[PATCH] powerpc: Merge kexecMichael Ellerman
This patch merges, to some extent, the PPC32 and PPC64 kexec implementations. We adopt the PPC32 approach of having ppc_md callbacks for the kexec functions. The current PPC64 implementation becomes the "default" implementation for PPC64 which platforms can select if they need no special treatment. I've added these default callbacks to pseries/maple/cell/powermac, this means iSeries no longer supports kexec - but it never worked anyway. I've renamed PPC32's machine_kexec_simple to default_machine_kexec, inline with PPC64. Judging by the comments it might be better named machine_kexec_non_of, or something, but at the moment it's the only implementation for PPC32 so it's the "default". Kexec requires machine_shutdown(), which is in machine_kexec.c on PPC32, but we already have in setup-common.c on powerpc. All this does is call ppc_md.nvram_sync, which only powermac implements, so instead make machine_shutdown a ppc_md member and have it call core99_nvram_sync directly on powermac. I've also stuck relocate_kernel.S into misc_32.S for powerpc. Built for ARCH=ppc, and 32 & 64 bit ARCH=powerpc, with KEXEC=y/n. Booted on P5 LPAR and successfully kexec'ed. Should apply on top of 493f25ef4087395891c99fcfe2c72e62e293e89f. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-14[PATCH] powerpc: Turn cpu_irq_down into kexec_cpu_downMichael Ellerman
We currently have a ppc_md member called cpu_irq_down, which disables IRQs for the cpu in question. The only caller of cpu_irq_down is the kexec code. On pSeries we need to do more than just teardown IRQs at kexec time, so rename the ppc_md member to kexec_cpu_down and expand it. The pSeries code needs to know, and other platforms might too, whether we're doing a crash shutdown (ie. panicking) or a regular kexec, so add a flag for that. The pSeries implementation of kexec_cpu_down does an unregister VPA call, which tells the Hypervisor to stop writing stuff into our pacas. Without this we can get weird memory corruption bugs when we kexec, caused by the Hypervisor writing into the first kernel's pacas which happens to be somewhere interesting in the second kernel's memory. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-07Merge ../linux-2.6Paul Mackerras
2005-11-07[PATCH] powerpc: Make ppc_md.set_dabr non 64-bit specificMichael Ellerman
Define ppc_md.set_dabr for both 32 + 64 bit. Cleanup the implementation for pSeries also, it was needlessly complex. Now we just do two firmware tests at setup time, and use one of two functions, rather than using one function and testing on every call. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-06[PATCH] ppc64: support 64k pagesBenjamin Herrenschmidt
Adds a new CONFIG_PPC_64K_PAGES which, when enabled, changes the kernel base page size to 64K. The resulting kernel still boots on any hardware. On current machines with 4K pages support only, the kernel will maintain 16 "subpages" for each 64K page transparently. Note that while real 64K capable HW has been tested, the current patch will not enable it yet as such hardware is not released yet, and I'm still verifying with the firmware architects the proper to get the information from the newer hypervisors. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-03powerpc: Make set_dabr() a ppc_md functionMichael Ellerman
Move pSeries specific code in set_dabr() into a ppc_md function, this will allow us to keep plpar_wrappers.h private to platforms/pseries. Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
2005-10-29[PATCH] ppc: make phys_mem_access_prot() work with pfns instead of addressesRoland Dreier
Change the phys_mem_access_prot() function to take a pfn instead of an address. This allows mmap64() to work on /dev/mem for addresses above 4G on 32-bit architectures. We start with a pfn in mmap_mem(), so there's no need to convert to an address; in fact, it's actively bad, since the conversion can overflow when the address is above 4G. Similarly fix the ppc32 page_is_ram() function to avoid a conversion to an address by directly comparing to max_pfn. Working with max_pfn instead of high_memory fixes page_is_ram() to give the right answer for highmem pages. Signed-off-by: Roland Dreier <rolandd@cisco.com> Cc: Anton Blanchard <anton@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-10-26power: Update the multiple inclusion protection symbol on machdep.hPaul Mackerras
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-10-22powerpc: Merge in 64-bit powermac support.Paul Mackerras
This brings in a lot of changes from arch/ppc64/kernel/pmac_*.c to arch/powerpc/platforms/powermac/*.c and makes various minor tweaks elsewhere. On the powermac we now initialize ppc_md by copying the whole pmac_md structure into it, which required some changes in the ordering of initializations of individual fields of it. Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-10-20ppc64: Change ppc_md.get_cpuinfo to ppc_md.show_cpuinfoPaul Mackerras
... for consistency with ppc32; also add in ppc32's show_percpuinfo function. Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-10-19powerpc: Merge machdep.hPaul Mackerras
A few things change for consistency between ppc32 and ppc64: idle functions return void; *_get_boot_time functions return unsigned long (i.e. time_t) rather than filling in a struct rtc_time (since that's useful to the callers and easier for pmac to generate); *_get_rtc_time and *_set_rtc_time functions take a struct rtc_time; irq_canonicalize is gone; nvram_sync returns void. Signed-off-by: Paul Mackerras <paulus@samba.org>