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2010-04-12MIPS: make CAC_ADDR and UNCAC_ADDR account for PHYS_OFFSETFlorian Fainelli1-2/+4
On AR7, we already redefine PHYS_OFFSET to match the system specifities, it is however not sufficient when unsing dma_{map,unmap}_single, specifically in the ethernet driver, we must also adjust CAC_ADDR and UNCAC_ADDR for DMA to work correctly. This patch fixes the following issue, seen in cpmac_open: ops[#1]: Cpu 0 $ 0 : 00000000 10008400 a0f5b120 00000000 $ 4 : 94c59000 94270f64 00000020 00000010 $ 8 : 00000010 94103ce0 0000000a 94c03400 $12 : ffffffff 94c03408 94c03410 00000001 $16 : a0f5ba20 00000041 94c592c0 94c59200 $20 : 94c59000 000005ee 00002000 9438c8f0 $24 : 00000010 00000000 $28 : 94fac000 94fadd58 94390000 942724a8 Hi : 00000000 Lo : 00000001 epc : 94272518 cpmac_open+0x208/0x3f8 Not tainted ra : 942724a8 cpmac_open+0x198/0x3f8 Status: 10008403 KERNEL EXL IE Cause : 3080000c BadVA : 00000000 PrId : 00018448 (MIPS 4KEc) Modules linked in: Process ifconfig (pid: 278, threadinfo=94fac000, task=94e79590, tls=00000000) Stack : 7f8da120 2ab05cb0 94c59000 943356f0 00000000 943d0000 94c59000 943356f0 94c59030 943d0000 943c27c0 94fade10 00000000 94fade20 94c59000 9428e5a4 00000000 94c59000 00000041 94289768 94c59000 00000041 00001002 00001043 00000000 9428d810 00000000 94fade10 7f8da4e8 9428e6b8 00000000 7f8da4a8 7f8da4e8 00008914 00000000 942f7f2c 00000000 00000008 00408000 00008913 ... Call Trace: [<94272518>] cpmac_open+0x208/0x3f8 [<9428e5a4>] dev_open+0x164/0x264 [<9428d810>] dev_change_flags+0xd0/0x1bc [<942f7f2c>] devinet_ioctl+0x2d8/0x908 [<942771f8>] sock_ioctl+0x29c/0x2fc [<941a0fb4>] vfs_ioctl+0x2c/0x7c [<941a16ec>] do_vfs_ioctl+0x5dc/0x630 [<941a1790>] sys_ioctl+0x50/0x88 [<94101e10>] stack_done+0x20/0x3c Signed-off-by: peter fuerst <post@pfrst.de> Signed-off-by: Florian Fainelli <florian@openwrt.org> To: linux-mips@linux-mips.org Patchwork: http://patchwork.linux-mips.org/patch/1050/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-02-27MIPS: Two-level pagetables for 64-bit kernels with 64KB pages.David Daney1-12/+0
For 64-bit kernels with 64KB pages and two level page tables, there are 42 bits worth of virtual address space This is larger than the 40 bits of virtual address space obtained with the default 4KB Page size and three levels, so there are no draw backs for using two level tables with this configuration. Signed-off-by: David Daney <ddaney@caviumnetworks.com> Cc: linux-mips@linux-mips.org Patchwork: http://patchwork.linux-mips.org/patch/761/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-09-17MIPS: make page.h constants available to assembly.Nelson Elhage1-2/+3
page.h includes ifndef __ASSEMBLY__ guards, but PAGE_SIZE and some other constants are defined using "1UL", which the assembler does not support. Use the _AC macro from const.h to make them available to assembly (and linker scripts). Signed-off-by: Nelson Elhage <nelhage@ksplice.com> Signed-off-by: Tim Abbott <tabbott@ksplice.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-08-17MIPS: Fix HPAGE_SIZE redefinitionAtsushi Nemoto1-0/+2
This patch fixes warnings like this: CC fs/proc/meminfo.o In file included from /work/linux/include/linux/mmzone.h:20, from /work/linux/include/linux/gfp.h:4, from /work/linux/include/linux/mm.h:8, from /work/linux/fs/proc/meminfo.c:5: /work/linux/arch/mips/include/asm/page.h:36:1: warning: "HPAGE_SIZE" redefined In file included from /work/linux/fs/proc/meminfo.c:2: /work/linux/include/linux/hugetlb.h:107:1: warning: this is the location of the previous definition Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Acked-by: David Daney <ddaney@caviumnetworks.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-07-03MIPS: Fix CONFIG_FLATMEM version of pfn_valid()Ralf Baechle1-1/+8
For systems which do not define PHYS_OFFSET as 0 pfn_valid() may falsely have returned 0 on most configurations. Bug introduced by commit 752fbeb2e3555c0d236e992f1195fd7ce30e728d (linux-mips.org) rsp. 6f284a2ce7b8bc49cb8455b1763357897a899abb (kernel.org) titled "[MIPS] FLATMEM: introduce PHYS_OFFSET." Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-06-17MIPS: Add hugetlbfs page defines.David Daney1-0/+5
Signed-off-by: David Daney <ddaney@caviumnetworks.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-06-11asm-generic: rename page.h and uaccess.hArnd Bergmann1-1/+1
The current asm-generic/page.h only contains the get_order function, and asm-generic/uaccess.h only implements unaligned accesses. This renames the file to getorder.h and uaccess-unaligned.h to make room for new page.h and uaccess.h file that will be usable by all simple (e.g. nommu) architectures. Signed-off-by: Remis Lima Baima <remis.developer@googlemail.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2009-05-14MIPS: Cavium: Add support for 8k and 32k page sizes.Ralf Baechle1-0/+3
Beyond the requirements of the architecture standard Cavium also supports 8k and 32k pages. Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Acked-by: David Daney <ddaney@caviumnetworks.com>
2008-10-11MIPS: Move headfiles to new location below arch/mips/includeRalf Baechle1-0/+191
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>