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| author |   Matthew Wilcox <willy@linux.intel.com> | 2009-03-17 08:54:06 -0400 |
|---|---|---|
| committer |   Jesse Barnes <jbarnes@virtuousgeek.org> | 2009-03-20 10:48:12 -0700 |
| commit | 24d27553390c69d11cdbd930d635193956fc295f (patch) | |
| tree | 1ed673378c02eba46e6f427e1ab2ca06558f9045 /include/linux/msi.h | |
| parent | Rewrite MSI-HOWTO (diff) | |
| download | linux-dev-24d27553390c69d11cdbd930d635193956fc295f.tar.xz linux-dev-24d27553390c69d11cdbd930d635193956fc295f.zip | |
PCI MSI: Replace 'type' with 'is_msix'
By changing from a 5-bit field to a 1-bit field, we free up some bits
that can be used by a later patch. Also rearrange the fields for better
packing on 64-bit platforms (reducing the size of msi_desc from 72 bytes
to 64 bytes).
Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Diffstat (limited to 'include/linux/msi.h')
| -rw-r--r-- | include/linux/msi.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/include/linux/msi.h b/include/linux/msi.h index d2b8a1e8ca11..9c5ce214fbf4 100644 --- a/include/linux/msi.h +++ b/include/linux/msi.h @@ -20,13 +20,13 @@ extern void write_msi_msg(unsigned int irq, struct msi_msg *msg); struct msi_desc { struct { - __u8 type : 5; /* {0: unused, 5h:MSI, 11h:MSI-X} */ + __u8 is_msix : 1; __u8 maskbit : 1; /* mask-pending bit supported ? */ __u8 masked : 1; __u8 is_64 : 1; /* Address size: 0=32bit 1=64bit */ __u8 pos; /* Location of the msi capability */ - __u32 maskbits_mask; /* mask bits mask */ __u16 entry_nr; /* specific enabled entry */ + __u32 maskbits_mask; /* mask bits mask */ unsigned default_irq; /* default pre-assigned irq */ }msi_attrib; |