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| author | Sui Jingfeng <suijingfeng@loongson.cn> | 2023-08-30 19:15:28 +0800 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2023-10-06 17:13:11 -0500 |
| commit | 7e845ecb2fbfa1bf800e703df29ee2e06592c2a0 (patch) | |
| tree | 0b8c6ecfa795e92469f1d744554ee57f20aeb1b8 /tools/perf/scripts/python/exported-sql-viewer.py | |
| parent | 0bb80ecc33a8fb5a682236443c1e740d5c917d1d (diff) | |
PCI: Add pci_is_vga() helper
The PCI Code and ID Assignment spec, r1.15, secs 1.4 and 1.1, define
VGA Base Class and Sub-Classes:
03 00 PCI_CLASS_DISPLAY_VGA VGA-compatible or 8514-compatible
00 01 PCI_CLASS_NOT_DEFINED_VGA VGA-compatible (before Class Code)
Add a pci_is_vga() helper to return true if a device is in either category.
These VGA devices use the hardwired legacy VGA resources
([mem 0xa0000-0xbffff], [io 0x3b0-0x3bb], [io 0x3c0-0x3df] and aliases), so
they require special handling if more than one is present in the system.
Link: https://lore.kernel.org/r/20230830111532.444535-2-sui.jingfeng@linux.dev
Signed-off-by: Sui Jingfeng <suijingfeng@loongson.cn>
[bhelgaas: commit log, drop !pdev test]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: "Maciej W. Rozycki" <macro@orcam.me.uk>
Diffstat (limited to 'tools/perf/scripts/python/exported-sql-viewer.py')
0 files changed, 0 insertions, 0 deletions