linux-toradex.git/drivers/net/ehea/ehea_qmr.c, branch tegra-9.12.13

powerpc: Cleanup from l64 to ll64 change: drivers/net

2009-01-13T03:48:00+00:00

These are powerpc specific drivers.

Signed-off-by: Stephen Rothwell 
Acked-by: David S. Miller 
Signed-off-by: Benjamin Herrenschmidt

ehea: use get_zeroed_page for alignment-sensitive allocation

2008-12-26T02:32:57+00:00

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 
Signed-off-by: David S. Miller

drivers/net/ehea: Remove redundant test

2008-12-26T02:03:09+00:00

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/)

// 
@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);
)
// 

Signed-off-by: Julia Lawall 
Signed-off-by: David S. Miller

ehea: Fix some whitespace issues

2008-11-06T05:50:56+00:00

This patch removes some trailing whitespaces and spaces before tabs.

Signed-off-by: Hannes Hering 
Signed-off-by: Jeff Garzik

ehea: Detect 16GB hugepages for firmware restriction

2008-10-27T18:49:55+00:00

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 
Signed-off-by: Jeff Garzik

ehea: Fix memory hotplug support

2008-10-22T10:22:17+00:00

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 
Signed-off-by: Jeff Garzik

ehea: Fix DLPAR memory handling

2008-09-24T22:49:00+00:00

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 
Signed-off-by: Jeff Garzik

ehea: Add DLPAR memory remove support

2008-05-13T05:31:39+00:00

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 
Signed-off-by: Jeff Garzik

ehea: fix qmr checkpatch complaints

2008-02-03T12:25:58+00:00

Cc: Jan-Bernd Themann 
Signed-off-by: Doug Maxey 
Signed-off-by: Jeff Garzik 
Signed-off-by: David S. Miller

ehea: use kernel event queue

2007-10-10T23:55:27+00:00

eHEA recovery and DLPAR functions are called seldomly. The eHEA workqueues
are replaced by the kernel event queue.

Signed-off-by: Jan-Bernd Themann 
Signed-off-by: Jeff Garzik