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commit db635adc turned -DDEBUG for x86/pci on when CONFIG_PCI_DEBUG
is set. In general, I agree with that change.
However, it exposes a bunch of very low level PCI debugging in the
early x86 path, such as:
0 reading 2 from a: ffff
1 reading 2 from a: ffff
2 reading 2 from a: ffff
3 reading 2 from a: 300
3 reading 2 from 0: 1002
3 reading 2 from 2: 515e
These statements add a lot of noise to the boot and aren't likely to
be necessary even when handling random upstream bug reports.
[In contrast, statements such as these:
pci 0000:02:04.0: found [14e4:164a] class 000200 header type 00
pci 0000:02:04.0: reg 10: [mem 0xf8000000-0xf9ffffff 64bit]
pci 0000:02:04.0: reg 30: [mem 0x00000000-0x0001ffff pref]
are indeed useful when remote debugging users' machines]
Remove the noisy printks and save electrons everywhere.
Cc: Bjorn Helgaas <bjorn.helgaas@hp.com>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
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Use %02x:%02x.%d rather than %02x:%02x:%02x so PCI addresses
look the same as in other parts of the kernel.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
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The early "dump PCI config space" code skips many multi-function
devices. This patch fixes that, so it dumps all devices in PCI
domain 0.
We should not skip the rest of the functions if CLASS_REVISION is
0xffffffff. Often multi-function devices have gaps in the function ID
space, e.g., 1c.0 and 1c.2 exist but 1c.1 doesn't. The CLASS_REVISION
of the non-existent 1c.1 function will appear to be 0xffffffff.
We should only look at the HEADER_TYPE of function zero. Often the
"multi-function" is set in function zero, but not in other functions.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
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Impact: cleanup
Now that arch/x86/pci/pci.h is used in a number of other places as well,
move the lowlevel x86 pci definitions into the architecture include files.
(not to be confused with the existing arch/x86/include/asm/pci.h file,
which provides public details about x86 PCI)
Tested on: X86_32_UP, X86_32_SMP and X86_64_SMP
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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There are a couple of places where (P)Dprintk is used which is an old
compile time enabled printk wrapper. Convert it to the generic
pr_debug().
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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Allows us to dump PCI space before any kernel changes have been made.
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
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also add write_pci_config_16
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
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Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Alex Chiang
Bjorn Helgaas
Jaswinder Singh Rajput
Thomas Gleixner
Yinghai Lu