| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Date: Wed, 13 Apr 2011 14:05:08 -0700
From: "Matt Carlson" <mcarlson@...adcom.com>
To: davem@...emloft.net
cc: netdev@...r.kernel.org, mcarlson@...adcom.com
Subject: [PATCH net-next 5/5] tg3: Add support for extended VPD blocks
In some devices, the VPD block is relocated to a different area in
NVRAM. The original location can still contain old, but still valid VPD
data. This patch changes the code to look for an extended VPD block in
NVRAM. If one is found, that block is used for all VPD operations
instead.
Signed-off-by: Matt Carlson <mcarlson@...adcom.com>
Reviewed-by: Michael Chan <mchan@...adcom.com>
Reviewed-by: Benjamin Li <benli@...adcom.com>
---
drivers/net/tg3.c | 125 ++++++++++++++++++++++++++++++++++-------------------
drivers/net/tg3.h | 2 +
2 files changed, 83 insertions(+), 44 deletions(-)
diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c
index 52dd516..10fa476 100644
--- a/drivers/net/tg3.c
+++ b/drivers/net/tg3.c
@@ -10416,6 +10416,81 @@ static void tg3_get_ethtool_stats(struct net_device *dev,
memcpy(tmp_stats, tg3_get_estats(tp), sizeof(tp->estats));
}
+static __be32 * tg3_vpd_readblock(struct tg3 *tp)
+{
+ int i;
+ __be32 *buf;
+ u32 offset = 0, len = 0;
+ u32 magic, val;
+
+ if ((tp->tg3_flags3 & TG3_FLG3_NO_NVRAM) ||
+ tg3_nvram_read(tp, 0, &magic))
+ return NULL;
+
+ if (magic == TG3_EEPROM_MAGIC) {
+ for (offset = TG3_NVM_DIR_START;
+ offset < TG3_NVM_DIR_END;
+ offset += TG3_NVM_DIRENT_SIZE) {
+ if (tg3_nvram_read(tp, offset, &val))
+ return NULL;
+
+ if ((val >> TG3_NVM_DIRTYPE_SHIFT) ==
+ TG3_NVM_DIRTYPE_EXTVPD)
+ break;
+ }
+
+ if (offset != TG3_NVM_DIR_END) {
+ len = (val & TG3_NVM_DIRTYPE_LENMSK) * 4;
+ if (tg3_nvram_read(tp, offset + 4, &offset))
+ return NULL;
+
+ offset = tg3_nvram_logical_addr(tp, offset);
+ }
+ }
+
+ if (!offset || !len) {
+ offset = TG3_NVM_VPD_OFF;
+ len = TG3_NVM_VPD_LEN;
+ }
+
+ buf = kmalloc(len, GFP_KERNEL);
+ if (buf == NULL)
+ return NULL;
+
+ if (magic == TG3_EEPROM_MAGIC) {
+ for (i = 0; i < len; i += 4) {
+ /* The data is in little-endian format in NVRAM.
+ * Use the big-endian read routines to preserve
+ * the byte order as it exists in NVRAM.
+ */
+ if (tg3_nvram_read_be32(tp, offset + i, &buf[i/4]))
+ goto error;
+ }
+ } else {
+ u8 *ptr;
+ ssize_t cnt;
+ unsigned int pos = 0;
+
+ ptr = (u8 *)&buf[0];
+ for (i = 0; pos < len && i < 3; i++, pos += cnt, ptr += cnt) {
+ cnt = pci_read_vpd(tp->pdev, pos,
+ len - pos, ptr);
+ if (cnt == -ETIMEDOUT || cnt == -EINTR)
+ cnt = 0;
+ else if (cnt < 0)
+ goto error;
+ }
+ if (pos != len)
+ goto error;
+ }
+
+ return buf;
+
+error:
+ kfree(buf);
+ return NULL;
+}
+
#define NVRAM_TEST_SIZE 0x100
#define NVRAM_SELFBOOT_FORMAT1_0_SIZE 0x14
#define NVRAM_SELFBOOT_FORMAT1_2_SIZE 0x18
@@ -10555,14 +10630,11 @@ static int tg3_test_nvram(struct tg3 *tp)
if (csum != le32_to_cpu(buf[0xfc/4]))
goto out;
- for (i = 0; i < TG3_NVM_VPD_LEN; i += 4) {
- /* The data is in little-endian format in NVRAM.
- * Use the big-endian read routines to preserve
- * the byte order as it exists in NVRAM.
- */
- if (tg3_nvram_read_be32(tp, TG3_NVM_VPD_OFF + i, &buf[i/4]))
- goto out;
- }
+ kfree(buf);
+
+ buf = tg3_vpd_readblock(tp);
+ if (!buf)
+ return -ENOMEM;
i = pci_vpd_find_tag((u8 *)buf, 0, TG3_NVM_VPD_LEN,
PCI_VPD_LRDT_RO_DATA);
@@ -12905,46 +12977,11 @@ static void __devinit tg3_read_vpd(struct tg3 *tp)
u8 *vpd_data;
unsigned int block_end, rosize, len;
int j, i = 0;
- u32 magic;
-
- if ((tp->tg3_flags3 & TG3_FLG3_NO_NVRAM) ||
- tg3_nvram_read(tp, 0x0, &magic))
- goto out_no_vpd;
- vpd_data = kmalloc(TG3_NVM_VPD_LEN, GFP_KERNEL);
+ vpd_data = (u8 *)tg3_vpd_readblock(tp);
if (!vpd_data)
goto out_no_vpd;
- if (magic == TG3_EEPROM_MAGIC) {
- for (i = 0; i < TG3_NVM_VPD_LEN; i += 4) {
- u32 tmp;
-
- /* The data is in little-endian format in NVRAM.
- * Use the big-endian read routines to preserve
- * the byte order as it exists in NVRAM.
- */
- if (tg3_nvram_read_be32(tp, TG3_NVM_VPD_OFF + i, &tmp))
- goto out_not_found;
-
- memcpy(&vpd_data[i], &tmp, sizeof(tmp));
- }
- } else {
- ssize_t cnt;
- unsigned int pos = 0;
-
- for (; pos < TG3_NVM_VPD_LEN && i < 3; i++, pos += cnt) {
- cnt = pci_read_vpd(tp->pdev, pos,
- TG3_NVM_VPD_LEN - pos,
- &vpd_data[pos]);
- if (cnt == -ETIMEDOUT || cnt == -EINTR)
- cnt = 0;
- else if (cnt < 0)
- goto out_not_found;
- }
- if (pos != TG3_NVM_VPD_LEN)
- goto out_not_found;
- }
-
i = pci_vpd_find_tag(vpd_data, 0, TG3_NVM_VPD_LEN,
PCI_VPD_LRDT_RO_DATA);
if (i < 0)
diff --git a/drivers/net/tg3.h b/drivers/net/tg3.h
index b3ccfcc..224c3e0 100644
--- a/drivers/net/tg3.h
+++ b/drivers/net/tg3.h
@@ -2009,7 +2009,9 @@
#define TG3_NVM_DIR_END 0x78
#define TG3_NVM_DIRENT_SIZE 0xc
#define TG3_NVM_DIRTYPE_SHIFT 24
+#define TG3_NVM_DIRTYPE_LENMSK 0x003fffff
#define TG3_NVM_DIRTYPE_ASFINI 1
+#define TG3_NVM_DIRTYPE_EXTVPD 20
#define TG3_NVM_PTREV_BCVER 0x94
#define TG3_NVM_BCVER_MAJMSK 0x0000ff00
#define TG3_NVM_BCVER_MAJSFT 8
--
1.7.3.4
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Powered by blists - more mailing lists