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path: root/drivers/net/ehea/ehea_qmr.c
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* ehea: Fix mem allocations which require page alignmentThomas Klein2009-01-21
| | | | | | | | PAGE_SIZE allocations via slab are not guaranteed to be page-aligned. Fixed all memory allocations where page alignment is required by firmware. Signed-off-by: Thomas Klein <tklein@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* powerpc: Cleanup from l64 to ll64 change: drivers/netStephen Rothwell2009-01-12
| | | | | | | | These are powerpc specific drivers. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* ehea: use get_zeroed_page for alignment-sensitive allocationNathan Lynch2008-12-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | With slub debug enabled, I see the following errors and crash with 2.6.28-rc9: IBM eHEA ethernet device driver (Release EHEA_0095) ehea: Error in ehea_h_register_rpage_mr: not on pageboundary ehea: Error in ehea_reg_mr_section: register_rpage_mr failed ehea: Error in ehea_reg_kernel_mr: registering mr failed ehea: Error in ehea_setup_ports: creating MR failed ehea 23c00100.lhea: setup_ports failed Unable to handle kernel paging request for data at address 0x6b6b6b6b6b6bbdcb Faulting instruction address: 0xd000000000064a24 cpu 0x0: Vector: 300 (Data Access) at [c0000000740e7190] pc: d000000000064a24: .ehea_update_firmware_handles+0x84/0x47c [ehea] lr: d00000000006df34: .ehea_probe_adapter+0x35c/0x39c [ehea] sp: c0000000740e7410 msr: 8000000000009032 dar: 6b6b6b6b6b6bbdcb dsisr: 40000000 current = 0xc000000074233780 paca = 0xc0000000008a3300 pid = 2046, comm = modprobe enter ? for help [c0000000740e74f0] d00000000006df34 .ehea_probe_adapter+0x35c/0x39c [ehea] [c0000000740e75a0] c00000000041d5a4 .of_platform_device_probe+0x78/0xb0 [c0000000740e7630] c0000000002d8b38 .driver_probe_device+0x13c/0x200 [c0000000740e76c0] c0000000002d8c90 .__driver_attach+0x94/0xd8 [c0000000740e7750] c0000000002d7d64 .bus_for_each_dev+0x80/0xd8 [c0000000740e7800] c0000000002d889c .driver_attach+0x28/0x40 [c0000000740e7880] c0000000002d8340 .bus_add_driver+0xd4/0x284 [c0000000740e7920] c0000000002d90a0 .driver_register+0xc4/0x198 [c0000000740e79d0] c00000000041d45c .of_register_driver+0x4c/0x60 [c0000000740e7a50] c000000000020ef8 .ibmebus_register_driver+0x30/0x4c [c0000000740e7ae0] d00000000006e108 .ehea_module_init+0x194/0x208c [ehea] [c0000000740e7b90] c000000000009028 .do_one_initcall+0x90/0x1ac [c0000000740e7d90] c00000000008619c .sys_init_module+0xc4/0x200 [c0000000740e7e30] c0000000000084ac syscall_exit+0x0/0x40 (When slub debug is disabled it works fine.) PAGE_SIZE allocations via slab are not guaranteed to be page-aligned; use get_zeroed_page for the 'pt' buffer (I don't really know what this is, only that it is passed to firmware and that the first error message complains about its alignment). This allows the system to boot. Signed-off-by: Nathan Lynch <ntl@pobox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* drivers/net/ehea: Remove redundant testJulia Lawall2008-12-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In each case, vpage is checked not to be NULL just after it is initialized at the beginning of each loop iteration. A simplified version of the semantic patch that makes this change is as follows: (http://www.emn.fr/x-info/coccinelle/) // <smpl> @r exists@ local idexpression x; expression E; position p1,p2; @@ if (x@p1 == NULL || ...) { ... when forall return ...; } ... when != \(x=E\|x--\|x++\|--x\|++x\|x-=E\|x+=E\|x|=E\|x&=E\|&x\) ( x@p2 == NULL | x@p2 != NULL ) // another path to the test that is not through p1? @s exists@ local idexpression r.x; position r.p1,r.p2; @@ ... when != x@p1 ( x@p2 == NULL | x@p2 != NULL ) @fix depends on !s@ position r.p1,r.p2; expression x,E; statement S1,S2; @@ ( - if ((x@p2 != NULL) || ...) S1 | - if ((x@p2 == NULL) && ...) S1 | - BUG_ON(x@p2 == NULL); ) // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: David S. Miller <davem@davemloft.net>
* ehea: Fix some whitespace issuesHannes Hering2008-11-06
| | | | | | | This patch removes some trailing whitespaces and spaces before tabs. Signed-off-by: Hannes Hering <hering2@de.ibm.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
* ehea: Detect 16GB hugepages for firmware restrictionThomas Klein2008-10-27
| | | | | | | | | | | | All kernel memory which is used for kernel/hardware data transfer must be registered with firmware using "memory regions". 16GB hugepages may not be part of a memory region due to firmware restrictions. This patch modifies the walk_memory_resource callback fn to filter hugepages and add only standard memory to the busmap which is later on used for MR registration. Signed-off-by: Thomas Klein <tklein@de.ibm.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
* ehea: Fix memory hotplug supportHannes Hering2008-10-22
| | | | | | | | | | This patch implements the memory notifier to update the busmap instantly instead of rebuilding the whole map. This is necessary because walk_memory_resource provides different information than required during memory hotplug. Signed-off-by: Hannes Hering <hering2@de.ibm.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
* ehea: Fix DLPAR memory handlingHannes Hering2008-09-24
| | | | | | | | The ehea busmap must be allocated only once in the first of many calls of the ehea_create_busmap_callback. Signed-off-by: Hannes Hering <hering2@de.ibm.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
* ehea: Add DLPAR memory remove supportHannes Hering2008-05-13
| | | | | | | | | The eHEA driver uses the recently modified walk_memory_resource for powerpc functionality to detect the memory layout. It further uses the memory hotplug notifiers to catch memory hotplug events. Signed-off-by: Hannes Hering <hering2@de.ibm.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
* ehea: fix qmr checkpatch complaintsDoug Maxey2008-02-03
| | | | | | | Cc: Jan-Bernd Themann <themann@de.ibm.com> Signed-off-by: Doug Maxey <dwm@austin.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* ehea: use kernel event queueJan-Bernd Themann2007-10-10
| | | | | | | | eHEA recovery and DLPAR functions are called seldomly. The eHEA workqueues are replaced by the kernel event queue. Signed-off-by: Jan-Bernd Themann <themann@de.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* ehea: DLPAR memory add fixJan-Bernd Themann2007-10-10
| | | | | | | | | Due to stability issues in high load situations the HW queue handling has to be changed. The HW queues are now stopped and restarted again instead of destroying and allocating new HW queues. Signed-off-by: Jan-Bernd Themann <themann@de.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* ehea: fix queue destructorJan-Bernd Themann2007-08-25
| | | | | | | | Includes hcp_epas_dtor in eq/cq/qp destructors to unmap HW register. Signed-off-by: Jan-Bernd Themann <themann@de.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* eHEA: Introducing support vor DLPAR memory addThomas Klein2007-07-16
| | | | | | | | | | | | This patch adds support for DLPAR memory add to the eHEA driver. To detect whether memory was added the driver uses its own memory mapping table and checks for kernel addresses whether they're located in already known memory sections. If not the function ehea_rereg_mrs() is triggered which performs a rebuild of the mapping table and a re-registration of the global memory region. Signed-off-by: Thomas Klein <tklein@de.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* ehea: Whitespace cleanupJan-Bernd Themann2007-07-08
| | | | | | | This patch fixes several whitespace issues. Signed-off-by: Jan-Bernd Themann <themann@de.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* ehea: code cleanupJan-Bernd Themann2007-04-28
| | | | | | | | | | | This patch includes: - code cleanup related to resource management - extended error data gathering for resource management - removing trailing whitespaces Signed-off-by: Jan-Bernd Themann <themann@de.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* ehea: Fixed error recoveryJan-Bernd Themann2007-02-09
| | | | | | | Error recovery for QP errors: Reset QPs and dump error information Signed-off-by: Jan-Bernd Themann <themann@de.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* [PATCH] severing skbuff.h -> mm.hAl Viro2006-12-04
| | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* [PATCH] ehea: 64K page support fixThomas Klein2006-11-06
| | | | | | | This patch fixes 64k page support by using PAGE_MASK and appropriate pagesize defines in several places. Signed-off-by: Thomas Klein <tklein@de.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* [PATCH] ehea: Nullpointer dereferencation fixThomas Klein2006-11-06
| | | | | | | Fix: Must check for nullpointer before dereferencing it - not afterwards. Signed-off-by: Thomas Klein <tklein@de.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* [PATCH] ehea: IBM eHEA Ethernet Device DriverJan-Bernd Themann2006-09-13
Hi Jeff, I fixed the __iomem issue and tested the driver with sparse. Looks good so far. Thanks for your effort. Jan-Bernd Themann Signed-off-by: Jan-Bernd Themann <themann@de.ibm.com> drivers/net/Kconfig | 9 drivers/net/Makefile | 1 drivers/net/ehea/Makefile | 6 drivers/net/ehea/ehea.h | 447 ++++++ drivers/net/ehea/ehea_ethtool.c | 294 ++++ drivers/net/ehea/ehea_hcall.h | 51 drivers/net/ehea/ehea_hw.h | 287 ++++ drivers/net/ehea/ehea_main.c | 2654 ++++++++++++++++++++++++++++++++++++++++ drivers/net/ehea/ehea_phyp.c | 705 ++++++++++ drivers/net/ehea/ehea_phyp.h | 455 ++++++ drivers/net/ehea/ehea_qmr.c | 582 ++++++++ drivers/net/ehea/ehea_qmr.h | 358 +++++ 12 files changed, 5849 insertions(+) Signed-off-by: Jeff Garzik <jeff@garzik.org>
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