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Follow latest PCI class code spec 

Original code used an old PCI-SIG spec for PCI class code definition:
"PCI Local Bus Specification Revision 3.0". In fact, the PCI class
code definition in this spec has been obsoleted for a long time.

Today, PCI-SIG uses a separate spec for PCI class code definition:
"PCI Code and ID Assignment Specification v1.5".

Without the fix, it is possible that new PCI devices are classified
incorrectly by irqbalance code. Two major codes and one sub-class code
were added in the change.

Signed-off-by: Yong Yang <yangoliver@gmail.com>
This commit is contained in:
Yong Yang 2015-01-22 07:20:37 +08:00
parent eb61d19539
commit 856435ee32
1 changed files with 10 additions and 3 deletions
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13
classify.c
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@ -39,8 +39,8 @@ static GList *cl_banned_irqs = NULL;
#define SYSDEV_DIR "/sys/bus/pci/devices"
#define PCI_MAX_CLASS 0x12
#define PCI_MAX_SERIAL_SUBCLASS 0x10
#define PCI_MAX_CLASS 0x14
#define PCI_MAX_SERIAL_SUBCLASS 0x81
static int get_pci_irq_class(int pci_class)
{
@ -48,7 +48,10 @@ static int get_pci_irq_class(int pci_class)
int sub = (pci_class & 0xFF00) >> 8;
short irq_class = IRQ_NODEF;
/*
* Class codes lifted from pci spec, appendix D.
* Class codes lifted from below PCI-SIG spec:
*
* PCI Code and ID Assignment Specification v1.5
*
* and mapped to irqbalance types here.
*
* IRQ_NODEF will go through classification by PCI sub-class code.
@ -72,6 +75,8 @@ static int get_pci_irq_class(int pci_class)
IRQ_OTHER,
IRQ_OTHER,
IRQ_OTHER,
IRQ_LEGACY,
IRQ_LEGACY,
};
/*
@ -89,6 +94,8 @@ static int get_pci_irq_class(int pci_class)
IRQ_LEGACY,
IRQ_LEGACY,
IRQ_LEGACY,
[0xa ... 0x7f] = IRQ_NODEF,
IRQ_LEGACY,
};
/*