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kernel-ark/include/asm-powerpc/firmware.h

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[PATCH] ppc64: create firmware_has_feature() Create the firmware_has_feature() inline and move the firmware feature stuff into its own header file. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-08-03 04:35:25 +00:00
/*
* Copyright (C) 2001 Ben. Herrenschmidt (benh@kernel.crashing.org)
*
* Modifications for ppc64:
* Copyright (C) 2003 Dave Engebretsen <engebret@us.ibm.com>
*
* 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 of the License, or (at your option) any later version.
*/
[PATCH] powerpc: Move firmware.h into include/asm-powerpc Move firmware.h into include/asm-powerpc. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-10-24 05:07:29 +00:00
#ifndef __ASM_POWERPC_FIRMWARE_H
#define __ASM_POWERPC_FIRMWARE_H
[PATCH] ppc64: create firmware_has_feature() Create the firmware_has_feature() inline and move the firmware feature stuff into its own header file. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-08-03 04:35:25 +00:00
#ifdef __KERNEL__
[POWERPC] implement BEGIN/END_FW_FTR_SECTION and use it an all the obvious places in assembler code. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
2006-09-25 08:19:00 +00:00
#include <asm/asm-compat.h>
[PATCH] ppc64: create firmware_has_feature() Create the firmware_has_feature() inline and move the firmware feature stuff into its own header file. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-08-03 04:35:25 +00:00
/* firmware feature bitmask values */
#define FIRMWARE_MAX_FEATURES 63
[POWERPC] implement BEGIN/END_FW_FTR_SECTION and use it an all the obvious places in assembler code. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
2006-09-25 08:19:00 +00:00
#define FW_FEATURE_PFT ASM_CONST(0x0000000000000001)
#define FW_FEATURE_TCE ASM_CONST(0x0000000000000002)
#define FW_FEATURE_SPRG0 ASM_CONST(0x0000000000000004)
#define FW_FEATURE_DABR ASM_CONST(0x0000000000000008)
#define FW_FEATURE_COPY ASM_CONST(0x0000000000000010)
#define FW_FEATURE_ASR ASM_CONST(0x0000000000000020)
#define FW_FEATURE_DEBUG ASM_CONST(0x0000000000000040)
#define FW_FEATURE_TERM ASM_CONST(0x0000000000000080)
#define FW_FEATURE_PERF ASM_CONST(0x0000000000000100)
#define FW_FEATURE_DUMP ASM_CONST(0x0000000000000200)
#define FW_FEATURE_INTERRUPT ASM_CONST(0x0000000000000400)
#define FW_FEATURE_MIGRATE ASM_CONST(0x0000000000000800)
#define FW_FEATURE_PERFMON ASM_CONST(0x0000000000001000)
#define FW_FEATURE_CRQ ASM_CONST(0x0000000000002000)
#define FW_FEATURE_VIO ASM_CONST(0x0000000000004000)
#define FW_FEATURE_RDMA ASM_CONST(0x0000000000008000)
#define FW_FEATURE_LLAN ASM_CONST(0x0000000000010000)
#define FW_FEATURE_BULK ASM_CONST(0x0000000000020000)
#define FW_FEATURE_XDABR ASM_CONST(0x0000000000040000)
#define FW_FEATURE_MULTITCE ASM_CONST(0x0000000000080000)
#define FW_FEATURE_SPLPAR ASM_CONST(0x0000000000100000)
#define FW_FEATURE_ISERIES ASM_CONST(0x0000000000200000)
#define FW_FEATURE_LPAR ASM_CONST(0x0000000000400000)
#ifndef __ASSEMBLY__
[PATCH] ppc64: create firmware_has_feature() Create the firmware_has_feature() inline and move the firmware feature stuff into its own header file. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-08-03 04:35:25 +00:00
[PATCH] ppc64: make firmware_has_feature() stronger Make firmware_has_feature() evaluate at compile time for the non pSeries case and tidy up code where possible. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-08-03 04:40:16 +00:00
enum {
[PATCH] powerpc: merge code values for identifying platforms This patch merges platform codes. systemcfg->platform is no longer used, systemcfg use in general is deprecated as much as possible (and renamed _systemcfg before it gets completely moved elsewhere in a future patch), _machine is now used on ppc64 along as ppc32. Platform codes aren't gone yet but we are getting a step closer. A bunch of asm code in head[_64].S is also turned into C code. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-10 02:37:51 +00:00
#ifdef CONFIG_PPC64
[PATCH] ppc64: introduce FW_FEATURE_ISERIES Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-08-03 04:43:21 +00:00
FW_FEATURE_PSERIES_POSSIBLE = FW_FEATURE_PFT | FW_FEATURE_TCE |
[PATCH] ppc64: make firmware_has_feature() stronger Make firmware_has_feature() evaluate at compile time for the non pSeries case and tidy up code where possible. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-08-03 04:40:16 +00:00
FW_FEATURE_SPRG0 | FW_FEATURE_DABR | FW_FEATURE_COPY |
FW_FEATURE_ASR | FW_FEATURE_DEBUG | FW_FEATURE_TERM |
FW_FEATURE_PERF | FW_FEATURE_DUMP | FW_FEATURE_INTERRUPT |
FW_FEATURE_MIGRATE | FW_FEATURE_PERFMON | FW_FEATURE_CRQ |
FW_FEATURE_VIO | FW_FEATURE_RDMA | FW_FEATURE_LLAN |
FW_FEATURE_BULK | FW_FEATURE_XDABR | FW_FEATURE_MULTITCE |
[PATCH] powerpc: Replace platform_is_lpar() with a firmware feature It has been decreed that platform numbers are evil, so as a step in that direction, replace platform_is_lpar() with a FW_FEATURE_LPAR bit. Currently FW_FEATURE_LPAR really means i/pSeries LPAR, in the future we might have to clean that up if we need to be more specific about what LPAR actually means. But that's another patch ... Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-03-21 09:45:59 +00:00
FW_FEATURE_SPLPAR | FW_FEATURE_LPAR,
[PATCH] ppc64: introduce FW_FEATURE_ISERIES Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-08-03 04:43:21 +00:00
FW_FEATURE_PSERIES_ALWAYS = 0,
[PATCH] powerpc: Replace platform_is_lpar() with a firmware feature It has been decreed that platform numbers are evil, so as a step in that direction, replace platform_is_lpar() with a FW_FEATURE_LPAR bit. Currently FW_FEATURE_LPAR really means i/pSeries LPAR, in the future we might have to clean that up if we need to be more specific about what LPAR actually means. But that's another patch ... Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-03-21 09:45:59 +00:00
FW_FEATURE_ISERIES_POSSIBLE = FW_FEATURE_ISERIES | FW_FEATURE_LPAR,
FW_FEATURE_ISERIES_ALWAYS = FW_FEATURE_ISERIES | FW_FEATURE_LPAR,
[PATCH] ppc64: make firmware_has_feature() stronger Make firmware_has_feature() evaluate at compile time for the non pSeries case and tidy up code where possible. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-08-03 04:40:16 +00:00
FW_FEATURE_POSSIBLE =
#ifdef CONFIG_PPC_PSERIES
[PATCH] ppc64: introduce FW_FEATURE_ISERIES Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-08-03 04:43:21 +00:00
FW_FEATURE_PSERIES_POSSIBLE |
#endif
#ifdef CONFIG_PPC_ISERIES
FW_FEATURE_ISERIES_POSSIBLE |
[PATCH] ppc64: make firmware_has_feature() stronger Make firmware_has_feature() evaluate at compile time for the non pSeries case and tidy up code where possible. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-08-03 04:40:16 +00:00
#endif
0,
[PATCH] ppc64: introduce FW_FEATURE_ISERIES Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-08-03 04:43:21 +00:00
FW_FEATURE_ALWAYS =
#ifdef CONFIG_PPC_PSERIES
FW_FEATURE_PSERIES_ALWAYS &
#endif
#ifdef CONFIG_PPC_ISERIES
FW_FEATURE_ISERIES_ALWAYS &
#endif
FW_FEATURE_POSSIBLE,
[PATCH] powerpc: merge code values for identifying platforms This patch merges platform codes. systemcfg->platform is no longer used, systemcfg use in general is deprecated as much as possible (and renamed _systemcfg before it gets completely moved elsewhere in a future patch), _machine is now used on ppc64 along as ppc32. Platform codes aren't gone yet but we are getting a step closer. A bunch of asm code in head[_64].S is also turned into C code. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-10 02:37:51 +00:00
#else /* CONFIG_PPC64 */
FW_FEATURE_POSSIBLE = 0,
FW_FEATURE_ALWAYS = 0,
#endif
[PATCH] ppc64: make firmware_has_feature() stronger Make firmware_has_feature() evaluate at compile time for the non pSeries case and tidy up code where possible. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-08-03 04:40:16 +00:00
};
[PATCH] ppc64: create firmware_has_feature() Create the firmware_has_feature() inline and move the firmware feature stuff into its own header file. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-08-03 04:35:25 +00:00
/* This is used to identify firmware features which are available
* to the kernel.
*/
[PATCH] powerpc: Rename and export ppc64_firmware_features We need to export ppc64_firmware_features for modules. Before we do that I think we should probably rename it to powerpc_firmware_features. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-03-27 03:26:25 +00:00
extern unsigned long powerpc_firmware_features;
[PATCH] ppc64: create firmware_has_feature() Create the firmware_has_feature() inline and move the firmware feature stuff into its own header file. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-08-03 04:35:25 +00:00
[PATCH] powerpc: Change firmware_has_feature() to a macro So that we can use firmware_has_feature() in a BUG_ON() and have the compiler elide the code entirely if the feature can never be set, change firmware_has_feature to a macro. Unfortunate, but necessary at least until GCC bug #26724 is fixed. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-03-23 12:33:03 +00:00
#define firmware_has_feature(feature) \
((FW_FEATURE_ALWAYS & (feature)) || \
[PATCH] powerpc: Rename and export ppc64_firmware_features We need to export ppc64_firmware_features for modules. Before we do that I think we should probably rename it to powerpc_firmware_features. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-03-27 03:26:25 +00:00
(FW_FEATURE_POSSIBLE & powerpc_firmware_features & (feature)))
[PATCH] ppc64: create firmware_has_feature() Create the firmware_has_feature() inline and move the firmware feature stuff into its own header file. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-08-03 04:35:25 +00:00
[PATCH] powerpc: Create a trampoline for the fwnmi vectors The fwnmi vectors can be anywhere < 32 MB, so we need to use a trampoline for them. The kdump kernel will register the trampoline addresses, which will then jump up to the real code above 32 MB. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-12-04 07:39:33 +00:00
extern void system_reset_fwnmi(void);
extern void machine_check_fwnmi(void);
/* This is true if we are using the firmware NMI handler (typically LPAR) */
extern int fwnmi_active;
[POWERPC] Consolidate feature fixup code There are currently two versions of the functions for applying the feature fixups, one for CPU features and one for firmware features. In addition, they are both in assembly and with separate implementations for 32 and 64 bits. identify_cpu() is also implemented in assembly and separately for 32 and 64 bits. This patch replaces them with a pair of C functions. The call sites are slightly moved on ppc64 as well to be called from C instead of from assembly, though it's a very small change, and thus shouldn't cause any problem. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Olof Johansson <olof@lixom.net> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-10-24 06:42:40 +00:00
extern unsigned int __start___fw_ftr_fixup, __stop___fw_ftr_fixup;
[POWERPC] implement BEGIN/END_FW_FTR_SECTION and use it an all the obvious places in assembler code. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
2006-09-25 08:19:00 +00:00
#else /* __ASSEMBLY__ */
[POWERPC] Support feature fixups in vdso's This patch reworks the feature fixup mecanism so vdso's can be fixed up. The main issue was that the construct: .long label (or .llong on 64 bits) will not work in the case of a shared library like the vdso. It will generate an empty placeholder in the fixup table along with a reloc, which is not something we can deal with in the vdso. The idea here (thanks Alan Modra !) is to instead use something like: 1: .long label - 1b That is, the feature fixup tables no longer contain addresses of bits of code to patch, but offsets of such code from the fixup table entry itself. That is properly resolved by ld when building the .so's. I've modified the fixup mecanism generically to use that method for the rest of the kernel as well. Another trick is that the 32 bits vDSO included in the 64 bits kernel need to have a table in the 64 bits format. However, gas does not support 32 bits code with a statement of the form: .llong label - 1b (Or even just .llong label) That is, it cannot emit the right fixup/relocation for the linker to use to assign a 32 bits address to an .llong field. Thus, in the specific case of the 32 bits vdso built as part of the 64 bits kernel, we are using a modified macro that generates: .long 0xffffffff .llong label - 1b Note that is assumes that the value is negative which is enforced by the .lds (those offsets are always negative as the .text is always before the fixup table and gas doesn't support emiting the reloc the other way around). Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-10-20 01:47:18 +00:00
#define BEGIN_FW_FTR_SECTION_NESTED(label) label:
#define BEGIN_FW_FTR_SECTION BEGIN_FW_FTR_SECTION_NESTED(97)
#define END_FW_FTR_SECTION_NESTED(msk, val, label) \
MAKE_FTR_SECTION_ENTRY(msk, val, label, __fw_ftr_fixup)
[POWERPC] implement BEGIN/END_FW_FTR_SECTION and use it an all the obvious places in assembler code. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
2006-09-25 08:19:00 +00:00
#define END_FW_FTR_SECTION(msk, val) \
[POWERPC] Support feature fixups in vdso's This patch reworks the feature fixup mecanism so vdso's can be fixed up. The main issue was that the construct: .long label (or .llong on 64 bits) will not work in the case of a shared library like the vdso. It will generate an empty placeholder in the fixup table along with a reloc, which is not something we can deal with in the vdso. The idea here (thanks Alan Modra !) is to instead use something like: 1: .long label - 1b That is, the feature fixup tables no longer contain addresses of bits of code to patch, but offsets of such code from the fixup table entry itself. That is properly resolved by ld when building the .so's. I've modified the fixup mecanism generically to use that method for the rest of the kernel as well. Another trick is that the 32 bits vDSO included in the 64 bits kernel need to have a table in the 64 bits format. However, gas does not support 32 bits code with a statement of the form: .llong label - 1b (Or even just .llong label) That is, it cannot emit the right fixup/relocation for the linker to use to assign a 32 bits address to an .llong field. Thus, in the specific case of the 32 bits vdso built as part of the 64 bits kernel, we are using a modified macro that generates: .long 0xffffffff .llong label - 1b Note that is assumes that the value is negative which is enforced by the .lds (those offsets are always negative as the .text is always before the fixup table and gas doesn't support emiting the reloc the other way around). Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-10-20 01:47:18 +00:00
END_FW_FTR_SECTION_NESTED(msk, val, 97)
[POWERPC] implement BEGIN/END_FW_FTR_SECTION and use it an all the obvious places in assembler code. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
2006-09-25 08:19:00 +00:00
#define END_FW_FTR_SECTION_IFSET(msk) END_FW_FTR_SECTION((msk), (msk))
#define END_FW_FTR_SECTION_IFCLR(msk) END_FW_FTR_SECTION((msk), 0)
[PATCH] ppc64: create firmware_has_feature() Create the firmware_has_feature() inline and move the firmware feature stuff into its own header file. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-08-03 04:35:25 +00:00
#endif /* __ASSEMBLY__ */
#endif /* __KERNEL__ */
[PATCH] powerpc: Move firmware.h into include/asm-powerpc Move firmware.h into include/asm-powerpc. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-10-24 05:07:29 +00:00
#endif /* __ASM_POWERPC_FIRMWARE_H */
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