diff options
| -rw-r--r-- | drivers/net/bnx2.c | 24 | ||||
| -rw-r--r-- | drivers/net/tg3.c | 26 | ||||
| -rw-r--r-- | drivers/pci/Makefile | 2 | ||||
| -rw-r--r-- | drivers/pci/vpd.c | 43 | ||||
| -rw-r--r-- | include/linux/pci.h | 12 |
5 files changed, 65 insertions, 42 deletions
diff --git a/drivers/net/bnx2.c b/drivers/net/bnx2.c index 084ef102b8c4..fd43feb5a350 100644 --- a/drivers/net/bnx2.c +++ b/drivers/net/bnx2.c @@ -7769,28 +7769,12 @@ bnx2_read_vpd_fw_ver(struct bnx2 *bp) } for (i = 0; i <= BNX2_VPD_LEN - 3; ) { - unsigned char val = data[i]; unsigned int block_end; - if (val & PCI_VPD_LRDT) { - if (i + PCI_VPD_LRDT_TAG_SIZE > BNX2_VPD_LEN) - break; - - if (val != PCI_VPD_LRDT_RO_DATA) { - i += PCI_VPD_LRDT_TAG_SIZE + - pci_vpd_lrdt_size(&data[i]); - - continue; - } - } else { - if ((val & PCI_VPD_SRDT_TIN_MASK) == PCI_VPD_STIN_END) - break; - - i += PCI_VPD_SRDT_TAG_SIZE + - pci_vpd_srdt_size(&data[i]); - - continue; - } + 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])); diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c index ed57a62b3ac8..76ad141ab448 100644 --- a/drivers/net/tg3.c +++ b/drivers/net/tg3.c @@ -12547,7 +12547,7 @@ skip_phy_reset: static void __devinit tg3_read_partno(struct tg3 *tp) { unsigned char vpd_data[TG3_NVM_VPD_LEN]; /* in little-endian format */ - unsigned int i; + int i; u32 magic; if ((tp->tg3_flags3 & TG3_FLG3_NO_NVRAM) || @@ -12586,28 +12586,12 @@ static void __devinit tg3_read_partno(struct tg3 *tp) /* Now parse and find the part number. */ for (i = 0; i < TG3_NVM_VPD_LEN - 2; ) { - unsigned char val = vpd_data[i]; unsigned int block_end; - if (val & PCI_VPD_LRDT) { - if (i + PCI_VPD_LRDT_TAG_SIZE > TG3_NVM_VPD_LEN) - break; - - if (val != PCI_VPD_LRDT_RO_DATA) { - i += PCI_VPD_LRDT_TAG_SIZE + - pci_vpd_lrdt_size(&vpd_data[i]); - - continue; - } - } else { - if ((val & PCI_VPD_SRDT_TIN_MASK) == PCI_VPD_STIN_END) - break; - - i += PCI_VPD_SRDT_TAG_SIZE + - pci_vpd_srdt_size(&vpd_data[i]); - - continue; - } + i = pci_vpd_find_tag(vpd_data, i, TG3_NVM_VPD_LEN, + PCI_VPD_LRDT_RO_DATA); + if (i < 0) + break; block_end = i + PCI_VPD_LRDT_TAG_SIZE + pci_vpd_lrdt_size(&vpd_data[i]); diff --git a/drivers/pci/Makefile b/drivers/pci/Makefile index 4df48d58eaa6..b2f6d777a084 100644 --- a/drivers/pci/Makefile +++ b/drivers/pci/Makefile @@ -4,7 +4,7 @@ obj-y += access.o bus.o probe.o remove.o pci.o quirks.o \ pci-driver.o search.o pci-sysfs.o rom.o setup-res.o \ - irq.o + irq.o vpd.o obj-$(CONFIG_PROC_FS) += proc.o obj-$(CONFIG_SYSFS) += slot.o diff --git a/drivers/pci/vpd.c b/drivers/pci/vpd.c new file mode 100644 index 000000000000..6bc554576f8d --- /dev/null +++ b/drivers/pci/vpd.c @@ -0,0 +1,43 @@ +/* + * 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); diff --git a/include/linux/pci.h b/include/linux/pci.h index 198d062640b7..e30ceea7345b 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -1395,5 +1395,17 @@ static inline u8 pci_vpd_srdt_size(const u8 *srdt) return (*srdt) & PCI_VPD_SRDT_LEN_MASK; } +/** + * pci_vpd_find_tag - Locates the Resource Data Type tag provided + * @buf: Pointer to buffered vpd data + * @off: The offset into the buffer at which to begin the search + * @len: The length of the vpd buffer + * @rdt: The Resource Data Type to search for + * + * Returns the index where the Resource Data Type was found or + * -ENOENT otherwise. + */ +int pci_vpd_find_tag(const u8 *buf, unsigned int off, unsigned int len, u8 rdt); + #endif /* __KERNEL__ */ #endif /* LINUX_PCI_H */ |