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pci: Add helper to search for VPD keywords

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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>
This commit is contained in:
Matt Carlson
2010-02-26 14:04:43 +00:00
committed by David S. Miller
parent e1d5bdabb9
commit 4067a8541d
4 changed files with 81 additions and 46 deletions
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60
drivers/net/bnx2.c
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@ -7769,48 +7769,54 @@ bnx2_read_vpd_fw_ver(struct bnx2 *bp)
}
for (i = 0; i <= BNX2_VPD_LEN - 3; ) {
unsigned int block_end;
int j;
unsigned int block_end, rosize;
i = pci_vpd_find_tag(data, i, BNX2_VPD_LEN,
PCI_VPD_LRDT_RO_DATA);
if (i < 0)
break;
block_end = (i + PCI_VPD_LRDT_TAG_SIZE +
pci_vpd_lrdt_size(&data[i]));
rosize = pci_vpd_lrdt_size(&data[i]);
block_end = i + PCI_VPD_LRDT_TAG_SIZE + rosize;
i += PCI_VPD_LRDT_TAG_SIZE;
if (block_end > BNX2_VPD_LEN)
goto vpd_done;
while (i < (block_end - 2)) {
int len = pci_vpd_info_field_size(&data[i]);
j = pci_vpd_find_info_keyword(data, i, rosize,
PCI_VPD_RO_KEYWORD_MFR_ID);
if (j > 0) {
int len = pci_vpd_info_field_size(&data[j]);
if (i + PCI_VPD_INFO_FLD_HDR_SIZE + len > block_end)
if (j + PCI_VPD_INFO_FLD_HDR_SIZE + len > block_end ||
len != 4 ||
memcmp(&data[j + PCI_VPD_INFO_FLD_HDR_SIZE],
"1028", 4))
goto vpd_done;
if (data[i] == 'M' && data[i + 1] == 'N') {
if (len != 4 ||
memcmp(&data[i + PCI_VPD_INFO_FLD_HDR_SIZE],
"1028", 4))
goto vpd_done;
mn_match = true;
} else if (data[i] == 'V' && data[i + 1] == '0') {
if (len > BNX2_MAX_VER_SLEN)
goto vpd_done;
v0_len = len;
v0_str = &data[i + PCI_VPD_INFO_FLD_HDR_SIZE];
}
i += PCI_VPD_INFO_FLD_HDR_SIZE + len;
if (mn_match && v0_str) {
memcpy(bp->fw_version, v0_str, v0_len);
bp->fw_version[v0_len] = ' ';
goto vpd_done;
}
mn_match = true;
}
j = pci_vpd_find_info_keyword(data, i, rosize,
PCI_VPD_RO_KEYWORD_VENDOR0);
if (j > 0) {
int len = pci_vpd_info_field_size(&data[j]);
j += PCI_VPD_INFO_FLD_HDR_SIZE;
if (j + len > block_end || len > BNX2_MAX_VER_SLEN)
goto vpd_done;
v0_len = len;
v0_str = &data[j];
}
if (mn_match && v0_str) {
memcpy(bp->fw_version, v0_str, v0_len);
bp->fw_version[v0_len] = ' ';
goto vpd_done;
}
goto vpd_done;
}