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author | Ingo Molnar <mingo@elte.hu> | 2010-03-09 17:11:53 +0100 |
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committer | Ingo Molnar <mingo@elte.hu> | 2010-03-09 17:11:53 +0100 |
commit | 548b84166917d6f5e2296123b85ad24aecd3801d (patch) | |
tree | 0ab0300e23a02df0fe3c0579627e4998bb122c00 /drivers/pci/vpd.c | |
parent | MAINTAINERS: Add Arnaldo as tools/perf/ co-maintainer (diff) | |
parent | Linux 2.6.34-rc1 (diff) | |
download | linux-548b84166917d6f5e2296123b85ad24aecd3801d.tar.xz linux-548b84166917d6f5e2296123b85ad24aecd3801d.zip |
Merge commit 'v2.6.34-rc1' into perf/urgent
Conflicts:
tools/perf/util/probe-event.c
Merge reason: Pick up -rc1 and resolve the conflict as well.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'drivers/pci/vpd.c')
-rw-r--r-- | drivers/pci/vpd.c | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/drivers/pci/vpd.c b/drivers/pci/vpd.c new file mode 100644 index 000000000000..a5a5ca17cfe6 --- /dev/null +++ b/drivers/pci/vpd.c @@ -0,0 +1,61 @@ +/* + * File: vpd.c + * Purpose: Provide PCI VPD support + * + * Copyright (C) 2010 Broadcom Corporation. + */ + +#include <linux/pci.h> + +int pci_vpd_find_tag(const u8 *buf, unsigned int off, unsigned int len, u8 rdt) +{ + int i; + + for (i = off; i < len; ) { + u8 val = buf[i]; + + if (val & PCI_VPD_LRDT) { + /* Don't return success of the tag isn't complete */ + if (i + PCI_VPD_LRDT_TAG_SIZE > len) + break; + + if (val == rdt) + return i; + + i += PCI_VPD_LRDT_TAG_SIZE + + pci_vpd_lrdt_size(&buf[i]); + } else { + u8 tag = val & ~PCI_VPD_SRDT_LEN_MASK; + + if (tag == rdt) + return i; + + if (tag == PCI_VPD_SRDT_END) + break; + + i += PCI_VPD_SRDT_TAG_SIZE + + pci_vpd_srdt_size(&buf[i]); + } + } + + return -ENOENT; +} +EXPORT_SYMBOL_GPL(pci_vpd_find_tag); + +int pci_vpd_find_info_keyword(const u8 *buf, unsigned int off, + unsigned int len, const char *kw) +{ + int i; + + for (i = off; i + PCI_VPD_INFO_FLD_HDR_SIZE <= off + len;) { + if (buf[i + 0] == kw[0] && + buf[i + 1] == kw[1]) + return i; + + i += PCI_VPD_INFO_FLD_HDR_SIZE + + pci_vpd_info_field_size(&buf[i]); + } + + return -ENOENT; +} +EXPORT_SYMBOL_GPL(pci_vpd_find_info_keyword); |