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| author | Matt Carlson <mcarlson@broadcom.com> | 2010-02-26 14:04:43 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-02-28 00:43:33 -0800 |
| commit | 4067a8541d397e9d6b443dd2ce0ecb78bfd991db (patch) | |
| tree | 49690419b218020b8a0e9381db2f9cc90b658cd0 /include/linux/pci.h | |
| parent | e1d5bdabb94da89bdb3c3f2ee105cf61fca88ec8 (diff) | |
| download | lwn-4067a8541d397e9d6b443dd2ce0ecb78bfd991db.tar.gz lwn-4067a8541d397e9d6b443dd2ce0ecb78bfd991db.zip | |
pci: Add helper to search for VPD keywords
This patch adds the pci_vpd_find_info_keyword() helper function to
find information field keywords within read-only and read-write large
resource data type sections.
Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/pci.h')
| -rw-r--r-- | include/linux/pci.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/include/linux/pci.h b/include/linux/pci.h index cfff32fc6e35..1f4a52131c99 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -1375,6 +1375,10 @@ void pci_request_acs(void); #define PCI_VPD_INFO_FLD_HDR_SIZE 3 +#define PCI_VPD_RO_KEYWORD_PARTNO "PN" +#define PCI_VPD_RO_KEYWORD_MFR_ID "MN" +#define PCI_VPD_RO_KEYWORD_VENDOR0 "V0" + /** * pci_vpd_lrdt_size - Extracts the Large Resource Data Type length * @lrdt: Pointer to the beginning of the Large Resource Data Type tag @@ -1420,5 +1424,18 @@ static inline u8 pci_vpd_info_field_size(const u8 *info_field) */ int pci_vpd_find_tag(const u8 *buf, unsigned int off, unsigned int len, u8 rdt); +/** + * pci_vpd_find_info_keyword - Locates an information field keyword in the VPD + * @buf: Pointer to buffered vpd data + * @off: The offset into the buffer at which to begin the search + * @len: The length of the buffer area, relative to off, in which to search + * @kw: The keyword to search for + * + * Returns the index where the information field keyword was found or + * -ENOENT otherwise. + */ +int pci_vpd_find_info_keyword(const u8 *buf, unsigned int off, + unsigned int len, const char *kw); + #endif /* __KERNEL__ */ #endif /* LINUX_PCI_H */ |