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OpenCloudOS-Kernel/arch/powerpc/include/asm/tce.h

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[PATCH] ppc64: Updated Olof iommu updates 1/3 Split out the implementation-specific parts of include/asm-ppc64/iommu.h to separate include files (tce.h and dart.h respectively). The generic iommu code really doesn't care about the underlying implementation, and the TCE and DART stuff is completely different. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-09-20 11:45:41 +08:00
/*
* Copyright (C) 2001 Mike Corrigan & Dave Engebretsen, IBM Corporation
* Rewrite, cleanup:
[PATCH] powerpc: update my email address Email address update, changing old work address to personal (permanent) one. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-21 16:12:32 +08:00
* Copyright (C) 2004 Olof Johansson <olof@lixom.net>, IBM Corporation
[PATCH] ppc64: Updated Olof iommu updates 1/3 Split out the implementation-specific parts of include/asm-ppc64/iommu.h to separate include files (tce.h and dart.h respectively). The generic iommu code really doesn't care about the underlying implementation, and the TCE and DART stuff is completely different. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-09-20 11:45:41 +08:00
*
* 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.
*
* 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
*/
[PATCH] powerpc: Move various ppc64 files with no ppc32 equivalent to powerpc This patch moves a bunch of files from arch/ppc64 and include/asm-ppc64 which have no equivalents in ppc32 code into arch/powerpc and include/asm-powerpc. The file affected are: abs_addr.h compat.h lppaca.h paca.h tce.h cpu_setup_power4.S ioctl32.c firmware.c pacaData.c The only changes apart from the move and corresponding Makefile changes are: - #ifndef/#define in includes updated to _ASM_POWERPC_ form - trailing whitespace removed - comments giving full paths removed - pacaData.c renamed paca.c to remove studlyCaps - Misplaced { moved in lppaca.h Built and booted on POWER5 LPAR (ARCH=powerpc and ARCH=ppc64), built for 32-bit powermac (ARCH=powerpc). Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-09 10:38:01 +08:00
#ifndef _ASM_POWERPC_TCE_H
#define _ASM_POWERPC_TCE_H
[PATCH] powerpc: sanitize header files for user space includes include/asm-ppc/ had #ifdef __KERNEL__ in all header files that are not meant for use by user space, include/asm-powerpc does not have this yet. This patch gets us a lot closer there. There are a few cases where I was not sure, so I left them out. I have verified that no CONFIG_* symbols are used outside of __KERNEL__ any more and that there are no obvious compile errors when including any of the headers in user space libraries. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-12-17 05:43:46 +08:00
#ifdef __KERNEL__
[PATCH] ppc64: Updated Olof iommu updates 1/3 Split out the implementation-specific parts of include/asm-ppc64/iommu.h to separate include files (tce.h and dart.h respectively). The generic iommu code really doesn't care about the underlying implementation, and the TCE and DART stuff is completely different. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-09-20 11:45:41 +08:00
[POWERPC] Use 4kB iommu pages even on 64kB-page systems The 10Gigabit ethernet device drivers appear to be able to chew up all 256MB of TCE mappings on pSeries systems, as evidenced by numerous error messages: iommu_alloc failed, tbl c0000000010d5c48 vaddr c0000000d875eff0 npages 1 Some experimentation indicates that this is essentially because one 1500 byte ethernet MTU gets mapped as a 64K DMA region when the large 64K pages are enabled. Thus, it doesn't take much to exhaust all of the available DMA mappings for a high-speed card. This patch changes the iommu allocator to work with its own unique, distinct page size. Although the patch is long, its actually quite simple: it just #defines a distinct IOMMU_PAGE_SIZE and then uses this in all the places that matter. As a side effect, it also dramatically improves network performance on platforms with H-calls on iommu translation inserts/removes (since we no longer call it 16 times for a 1500 bytes packet when the iommu HW is still 4k). In the future, we might want to make the IOMMU_PAGE_SIZE a variable in the iommu_table instance, thus allowing support for different HW page sizes in the iommu itself. Signed-off-by: Linas Vepstas <linas@austin.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Olof Johansson <olof@lixom.net> Acked-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-10-30 13:15:59 +08:00
#include <asm/iommu.h>
[PATCH] ppc64: Updated Olof iommu updates 1/3 Split out the implementation-specific parts of include/asm-ppc64/iommu.h to separate include files (tce.h and dart.h respectively). The generic iommu code really doesn't care about the underlying implementation, and the TCE and DART stuff is completely different. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-09-20 11:45:41 +08:00
/*
* Tces come in two formats, one for the virtual bus and a different
powerpc/pseries: Software invalidatation of TCEs Some pseries IOMMUs cache TCEs but don't snoop when the TCEs are changed in memory, hence we need manually invalidate in software. This adds code to do the invalidate. It keys off a device tree property to say where the to do the MMIO for the invalidate and some information on what the format of the invalidate including some magic routing info. it_busno get overloaded with this magic routing info and it_index with the MMIO address for the invalidate command. This then gets hooked into the building and freeing of TCEs. This is only useful on bare metal pseries. pHyp takes care of this when virtualised. Based on patch from Milton with cleanups from Mikey. Signed-off-by: Milton Miller <miltonm@bga.com> Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-06-30 04:58:33 +08:00
* format for PCI. PCI TCEs can have hardware or software maintianed
* coherency.
[PATCH] ppc64: Updated Olof iommu updates 1/3 Split out the implementation-specific parts of include/asm-ppc64/iommu.h to separate include files (tce.h and dart.h respectively). The generic iommu code really doesn't care about the underlying implementation, and the TCE and DART stuff is completely different. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-09-20 11:45:41 +08:00
*/
powerpc/pseries: Software invalidatation of TCEs Some pseries IOMMUs cache TCEs but don't snoop when the TCEs are changed in memory, hence we need manually invalidate in software. This adds code to do the invalidate. It keys off a device tree property to say where the to do the MMIO for the invalidate and some information on what the format of the invalidate including some magic routing info. it_busno get overloaded with this magic routing info and it_index with the MMIO address for the invalidate command. This then gets hooked into the building and freeing of TCEs. This is only useful on bare metal pseries. pHyp takes care of this when virtualised. Based on patch from Milton with cleanups from Mikey. Signed-off-by: Milton Miller <miltonm@bga.com> Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-06-30 04:58:33 +08:00
#define TCE_VB 0
#define TCE_PCI 1
[PATCH] ppc64: Updated Olof iommu updates 1/3 Split out the implementation-specific parts of include/asm-ppc64/iommu.h to separate include files (tce.h and dart.h respectively). The generic iommu code really doesn't care about the underlying implementation, and the TCE and DART stuff is completely different. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-09-20 11:45:41 +08:00
[PATCH] ppc64: Updated Olof iommu updates 2/3 There are potential cases in the future where the IOMMU might be mapping smaller pages than the regular MMU is using. Keep the allocator working on MMU pagesizes, but the low-level mapping functions need to map more than one TCE entry per page to deal with this. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-09-20 11:46:44 +08:00
/* TCE page size is 4096 bytes (1 << 12) */
#define TCE_SHIFT 12
#define TCE_PAGE_SIZE (1 << TCE_SHIFT)
[PATCH] powerpc: kill union tce_entry It's been long overdue to kill the union tce_entry in the pSeries/iSeries TCE code, especially since I asked the Summit guys to do it on the code they copied from us. Also, while I was at it, I cleaned up some whitespace. Built and booted on pSeries, built on iSeries. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-04-29 11:51:59 +08:00
#define TCE_ENTRY_SIZE 8 /* each TCE is 64 bits */
#define TCE_RPN_MASK 0xfffffffffful /* 40-bit RPN (4K pages) */
#define TCE_RPN_SHIFT 12
#define TCE_VALID 0x800 /* TCE valid */
#define TCE_ALLIO 0x400 /* TCE valid for all lpars */
#define TCE_PCI_WRITE 0x2 /* write from PCI allowed */
#define TCE_PCI_READ 0x1 /* read from PCI allowed */
#define TCE_VB_WRITE 0x1 /* write from VB allowed */
[PATCH] ppc64: Updated Olof iommu updates 1/3 Split out the implementation-specific parts of include/asm-ppc64/iommu.h to separate include files (tce.h and dart.h respectively). The generic iommu code really doesn't care about the underlying implementation, and the TCE and DART stuff is completely different. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-09-20 11:45:41 +08:00
[PATCH] powerpc: sanitize header files for user space includes include/asm-ppc/ had #ifdef __KERNEL__ in all header files that are not meant for use by user space, include/asm-powerpc does not have this yet. This patch gets us a lot closer there. There are a few cases where I was not sure, so I left them out. I have verified that no CONFIG_* symbols are used outside of __KERNEL__ any more and that there are no obvious compile errors when including any of the headers in user space libraries. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-12-17 05:43:46 +08:00
#endif /* __KERNEL__ */
[PATCH] powerpc: Move various ppc64 files with no ppc32 equivalent to powerpc This patch moves a bunch of files from arch/ppc64 and include/asm-ppc64 which have no equivalents in ppc32 code into arch/powerpc and include/asm-powerpc. The file affected are: abs_addr.h compat.h lppaca.h paca.h tce.h cpu_setup_power4.S ioctl32.c firmware.c pacaData.c The only changes apart from the move and corresponding Makefile changes are: - #ifndef/#define in includes updated to _ASM_POWERPC_ form - trailing whitespace removed - comments giving full paths removed - pacaData.c renamed paca.c to remove studlyCaps - Misplaced { moved in lppaca.h Built and booted on POWER5 LPAR (ARCH=powerpc and ARCH=ppc64), built for 32-bit powermac (ARCH=powerpc). Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-09 10:38:01 +08:00
#endif /* _ASM_POWERPC_TCE_H */