tg3: Add some VPD preprocessor constants

This patch cleans up the VPD code by creating preprocessor definitions
and using them in the place of hardcoded constants.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 16 insertions, 9 deletions

diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c
index 36f2e1b8cbb1..2576effca845 100644
--- a/drivers/net/tg3.c
+++ b/drivers/net/tg3.c
@@ -12433,7 +12433,7 @@ skip_phy_reset:
 
 static void __devinit tg3_read_partno(struct tg3 *tp)
 {
-        unsigned char vpd_data[256];   /* in little-endian format */
+        unsigned char vpd_data[TG3_NVM_VPD_LEN];   /* in little-endian format */
         unsigned int i;
         u32 magic;
 
@@ -12442,14 +12442,14 @@ static void __devinit tg3_read_partno(struct tg3 *tp)
                 goto out_not_found;
 
         if (magic == TG3_EEPROM_MAGIC) {
-                for (i = 0; i < 256; i += 4) {
+                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, 0x100 + i, &tmp))
+                        if (tg3_nvram_read_be32(tp, TG3_NVM_VPD_OFF + i, &tmp))
                                 goto out_not_found;
 
                         memcpy(&vpd_data[i], &tmp, sizeof(tmp));
@@ -12458,7 +12458,7 @@ static void __devinit tg3_read_partno(struct tg3 *tp)
                 int vpd_cap;
 
                 vpd_cap = pci_find_capability(tp->pdev, PCI_CAP_ID_VPD);
-                for (i = 0; i < 256; i += 4) {
+                for (i = 0; i < TG3_NVM_VPD_LEN; i += 4) {
                         u32 tmp, j = 0;
                         __le32 v;
                         u16 tmp16;
@@ -12483,7 +12483,7 @@ static void __devinit tg3_read_partno(struct tg3 *tp)
         }
 
         /* Now parse and find the part number. */
-        for (i = 0; i < 254; ) {
+        for (i = 0; i < TG3_NVM_VPD_LEN - 2; ) {
                 unsigned char val = vpd_data[i];
                 unsigned int block_end;
 
@@ -12502,7 +12502,7 @@ static void __devinit tg3_read_partno(struct tg3 *tp)
                               (vpd_data[i + 2] << 8)));
                 i += 3;
 
-                if (block_end > 256)
+                if (block_end > TG3_NVM_VPD_LEN)
                         goto out_not_found;
 
                 while (i < (block_end - 2)) {
@@ -12511,7 +12511,8 @@ static void __devinit tg3_read_partno(struct tg3 *tp)
                                 int partno_len = vpd_data[i + 2];
 
                                 i += 3;
-                                if (partno_len > 24 || (partno_len + i) > 256)
+                                if (partno_len > TG3_BPN_SIZE ||
+                                    (partno_len + i) > TG3_NVM_VPD_LEN)
                                         goto out_not_found;
 
                                 memcpy(tp->board_part_number,
diff --git a/drivers/net/tg3.h b/drivers/net/tg3.h
index 6a2c31071caf..cd30889650f8 100644
--- a/drivers/net/tg3.h
+++ b/drivers/net/tg3.h
@@ -1821,6 +1821,11 @@
 
 #define TG3_OTP_DEFAULT                 0x286c1640
 
+
+/* Hardware Legacy NVRAM layout */
+#define TG3_NVM_VPD_OFF                 0x100
+#define TG3_NVM_VPD_LEN                 256
+
 /* Hardware Selfboot NVRAM layout */
 #define TG3_NVM_HWSB_CFG1               0x00000004
 #define  TG3_NVM_HWSB_CFG1_MAJMSK       0xf8000000
@@ -2893,8 +2898,9 @@ struct tg3 {
         u32                             led_ctrl;
         u32                             phy_otp;
 
-        char                            board_part_number[24];
-#define TG3_VER_SIZE 32
+#define TG3_BPN_SIZE                    24
+        char                            board_part_number[TG3_BPN_SIZE];
+#define TG3_VER_SIZE                    ETHTOOL_FWVERS_LEN
         char                            fw_ver[TG3_VER_SIZE];
         u32                             nic_sram_data_cfg;
         u32                             pci_clock_ctrl;