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2022-01-11parisc: Re-use toc_stack as hpmc_stackHelge Deller1-4/+2
No need to have an own hpmc_stack. Just re-use the toc_stack of the monarch CPU as either a TOC or a HPMC will happen at the same time. This reduces the kernel memory footprint by 16k. Signed-off-by: Helge Deller <deller@gmx.de>
2021-02-12parisc: Fix IVT checksum calculation wrt HPMCSven Schnelle1-10/+0
On my C8000 a HPMC was triggered, but the HPMC handler wasn't called. I got the following chassis codes: <Cpu2> e800009802e00000 0000000000000000 CC_ERR_CHECK_HPMC <Cpu3> e800009803e00000 00000000001b28a3 CC_ERR_CHECK_HPMC <Cpu2> 37000f7302e00000 8400000000800000 CC_ERR_CPU_CHECK_SUMMARY <Cpu3> 37000f7303e00000 8400000000800000 CC_ERR_CPU_CHECK_SUMMARY <Cpu2> f600105e02e00000 fffffff0f0c00000 CC_MC_HPMC_MONARCH_SELECTED <Cpu3> 5600100b03e00000 00000000000001a0 CC_MC_OS_HPMC_LEN_ERR <Cpu2> 140003b202e00000 000000000000000b CC_ERR_HPMC_STATE_ENTRY <Cpu3> 5600106403e00000 fffffff0f043ad20 CC_MC_BR_TO_OS_HPMC_FAILED <Cpu3> 160012cf03e00000 030001001e000007 CC_MPS_CPU_WAITING <Cpu2> 5600100b02e00000 00000000000001a0 CC_MC_OS_HPMC_LEN_ERR <Cpu2> 5600106402e00000 fffffff0f0438e70 CC_MC_BR_TO_OS_HPMC_FAILED <Cpu2> e800009802e00000 0000000000000000 CC_ERR_CHECK_HPMC <Cpu2> 37000f7302e00000 8400000000800000 CC_ERR_CPU_CHECK_SUMMARY <Cpu2> 4000109f02e00000 0000000000000000 CC_MC_HPMC_INITIATED <Cpu2> 4000101902e00000 0000000000000000 CC_MC_MULTIPLE_HPMCS <Cpu2> 030010d502e00000 0000000000000000 CC_CPU_STOP C8000 PDC is complaining about our HPMC handler length, which is 1a0 (second part of the chassis code). Changing that to 0 makes the error go away: <Cpu0> e800009800e00000 0000000000000000 CC_ERR_CHECK_HPMC <Cpu3> e800009803e00000 0000000000000000 CC_ERR_CHECK_HPMC <Cpu1> e800009801e00000 0000000000000000 CC_ERR_CHECK_HPMC <Cpu2> e800009802e00000 0000000000000000 CC_ERR_CHECK_HPMC <Cpu0> 37000f7300e00000 8060004000000000 CC_ERR_CPU_CHECK_SUMMARY <Cpu3> 37000f7303e00000 8060004000000000 CC_ERR_CPU_CHECK_SUMMARY <Cpu1> 37000f7301e00000 8060004000000000 CC_ERR_CPU_CHECK_SUMMARY <Cpu2> 37000f7302e00000 8060004000000000 CC_ERR_CPU_CHECK_SUMMARY <Cpu0> f600105e00e00000 fffffff0f0c00000 CC_MC_HPMC_MONARCH_SELECTED <Cpu3> 5600109b03e00000 00000000001eb024 CC_MC_BR_TO_OS_HPMC <Cpu1> 5600109b01e00000 00000000001eb024 CC_MC_BR_TO_OS_HPMC <Cpu2> 5600109b02e00000 00000000001eb024 CC_MC_BR_TO_OS_HPMC <Cpu0> 140003b200e00000 000000000000000b CC_ERR_HPMC_STATE_ENTRY <Cpu3> 0000000003000000 0000000000000000 <Cpu1> 0000000001000000 0000000000000000 <Cpu2> 0000000002000000 0000000000000000 <Cpu0> 5600109b00e00000 00000000001eb024 CC_MC_BR_TO_OS_HPMC <Cpu0> 0000000000000000 0000000000000000 So at least the HPMC handler is now called, but it hangs. Which isn't really suprising, as the code has at least one comment saying it can't handle multiple CPUs, and here the handler is called on all CPUs. And i'm not sure whether it can handle 64 Bit. So despite what the PDC spec says, C8000 and RP34xx/RP44xx don't want the OS_HPMC length in the vector set, which is odd. I disassembled the firmware and it actually looks like a Bug in PDC. Signed-off-by: Sven Schnelle <svens@stackframe.org> Signed-off-by: Helge Deller <deller@gmx.de>
2019-05-30treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 150Thomas Gleixner1-14/+1
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 or at your option any later version this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not write to the free software foundation inc 59 temple place suite 330 boston ma 02111 1307 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 42 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Richard Fontana <rfontana@redhat.com> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190524100845.259718220@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-10-17parisc: Fix exported address of os_hpmc handlerHelge Deller1-2/+1
In the C-code we need to put the physical address of the hpmc handler in the interrupt vector table (IVA) in order to get HPMCs working. Since on parisc64 function pointers are indirect (in fact they are function descriptors) we instead export the address as variable and not as function. This reverts a small part of commit f39cce654f9a ("parisc: Add cfi_startproc and cfi_endproc to assembly code"). Signed-off-by: Helge Deller <deller@gmx.de> Cc: <stable@vger.kernel.org> [4.9+]
2018-03-27parisc: Fix HPMC handler by increasing size to multiple of 16 bytesHelge Deller1-1/+5
Make sure that the HPMC (High Priority Machine Check) handler is 16-byte aligned and that it's length in the IVT is a multiple of 16 bytes. Otherwise PDC may decide not to call the HPMC crash handler. Signed-off-by: Helge Deller <deller@gmx.de> Cc: stable@vger.kernel.org
2017-12-17parisc: Align os_hpmc_size on word boundaryHelge Deller1-0/+1
The os_hpmc_size variable sometimes wasn't aligned at word boundary and thus triggered the unaligned fault handler at startup. Fix it by aligning it properly. Signed-off-by: Helge Deller <deller@gmx.de> Cc: <stable@vger.kernel.org> # v4.14+
2017-06-09parisc: Don't hardcode PSW values in hpmc codeHelge Deller1-2/+3
Signed-off-by: Helge Deller <deller@gmx.de>
2016-10-05parisc: Add cfi_startproc and cfi_endproc to assembly codeHelge Deller1-2/+2
Add ENTRY_CFI() and ENDPROC_CFI() macros for dwarf debug info and convert assembly users to new macros. Signed-off-by: Helge Deller <deller@gmx.de>
2016-10-05parisc: Move hpmc stack into page aligned bss sectionHelge Deller1-4/+8
Do not reserve space in data section for hpmc stack, instead move it into the page aligned bss section. Signed-off-by: Helge Deller <deller@gmx.de>
2013-05-06parisc: fix partly 16/64k PAGE_SIZE bootHelge Deller1-2/+2
This patch fixes partly PAGE_SIZEs of 16K or 64K by adjusting the assembler PTE lookup code and the assembler TEMPALIAS code. Furthermore some data alignments for PAGE_SIZE have been limited to 4K (or less) to not waste too much memory with greater page sizes. As a side note, the palo loader can (currently) only handle up to 10 ELF segments which is fixed with tighter aligning as well. My testings indicated that the ldci command in the sba iommu coding needed adjustment by the PAGE_SHIFT value and that the I/O PDIR Page size was only set to 4K for my machine (C3000). All this fixes partly the boot, but there are still quite some caching problems left. Examples are e.g. the symbios logic driver which is failing: sym0: <896> rev 0x7 at pci 0000:00:0f.0 irq 69 sym0: PA-RISC Firmware, ID 7, Fast-40, SE, parity checking CACHE TEST FAILED: DMA error (dstat=0x81).sym0: CACHE INCORRECTLY CONFIGURED. and the tulip network driver which doesn't seem to work correctly either: Sending BOOTP requests .net eth0: Setting full-duplex based on MII#1 link partner capability of 05e1 ..... timed out! Beside those kernel fixes glibc will need fixes too to be able to handle >4K page sizes. Signed-off-by: Helge Deller <deller@gmx.de>
2009-01-05parisc: export length of os_hpmc vectorKyle McMartin1-1/+7
and use this instead of dealing with exporting start/end and toying with function descriptors. Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
2008-06-13Revert "parisc: fix trivial section name warnings"Kyle McMartin1-2/+1
This reverts commit bd3bb8c15b9a80dbddfb7905b237a4a11a4725b4. Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
2008-05-15parisc: fix trivial section name warningsHelge Deller1-1/+2
This trivial patch fixes the following section warnings on PARISC: > WARNING: vmlinux.o (.text.1): unexpected section name. >The (.[number]+) following section name are ld generated and not expected. > Did you forget to use "ax"/"aw" in a .S file? > Note that for example <linux/init.h> contains > section definitions for use in .S files. Signed-off-by: Helge Deller <deller@gmx.de> Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
2007-10-18[PARISC] Remove hardcoded uses of PAGE_SIZEKyle McMartin1-2/+2
Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
2007-06-04[PARISC] Fix kernel panic in check_ivtKyle McMartin1-4/+1
check_ivt had some seriously broken code wrt function pointers on parisc64. Instead of referencing the hpmc code via a function pointer, export symbols and reference it as a const array. Thanks to jda for pointing out the broken 64-bit func ptr handling. Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
2007-02-17[PARISC] more ENTRY(), ENDPROC(), END() conversionsHelge Deller1-9/+7
Signed-off-by: Helge Deller <deller@gmx.de> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
2005-04-16Linux-2.6.12-rc2v2.6.12-rc2Linus Torvalds1-0/+304
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
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