bnx2: Read firmware version from VPD.

And display it through ethtool -i.

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

1 files changed, 99 insertions, 3 deletions

diff --git a/drivers/net/bnx2.c b/drivers/net/bnx2.c
index dba3840d7df9..b7bc74b0d1b6 100644
--- a/drivers/net/bnx2.c
+++ b/drivers/net/bnx2.c
@@ -7722,6 +7722,93 @@ bnx2_get_pci_speed(struct bnx2 *bp)
 
 }
 
+static void __devinit
+bnx2_read_vpd_fw_ver(struct bnx2 *bp)
+{
+        int rc, i, v0_len = 0;
+        u8 *data;
+        u8 *v0_str = NULL;
+        bool mn_match = false;
+
+#define BNX2_MAX_VER_SLEN       30
+
+        data = kmalloc(256, GFP_KERNEL);
+        if (!data)
+                return;
+
+        rc = bnx2_nvram_read(bp, 0x300, data + 128, 128);
+        if (rc)
+                goto vpd_done;
+
+        for (i = 0; i < 128; i += 4) {
+                data[i] = data[i + 131];
+                data[i + 1] = data[i + 130];
+                data[i + 2] = data[i + 129];
+                data[i + 3] = data[i + 128];
+        }
+
+        for (i = 0; i < 128; ) {
+                unsigned char val = data[i];
+                unsigned int block_end;
+
+                if (val == 0x82 || val == 0x91) {
+                        i = (i + 3 + (data[i + 1] + (data[i + 2] << 8)));
+                        continue;
+                }
+
+                if (val != 0x90)
+                        goto vpd_done;
+
+                block_end = (i + 3 + (data[i + 1] + (data[i + 2] << 8)));
+                i += 3;
+
+                if (block_end > 128)
+                        goto vpd_done;
+
+                while (i < (block_end - 2)) {
+                        if (data[i] == 'M' && data[i + 1] == 'N') {
+                                int mn_len = data[i + 2];
+
+                                if (mn_len != 4)
+                                        goto vpd_done;
+
+                                i += 3;
+                                if (memcmp(&data[i], "1028", 4))
+                                        goto vpd_done;
+                                mn_match = true;
+                                i += 4;
+
+                        } else if (data[i] == 'V' && data[i + 1] == '0') {
+                                v0_len = data[i + 2];
+
+                                i += 3;
+                                if (v0_len > BNX2_MAX_VER_SLEN ||
+                                    (v0_len + i) > 128)
+                                        goto vpd_done;
+
+                                if (v0_len > BNX2_MAX_VER_SLEN)
+                                        v0_len = BNX2_MAX_VER_SLEN;
+
+                                v0_str = &data[i];
+                                i += data[i + 2];
+
+                        } else {
+                                i += 3 + data[i + 2];
+                        }
+
+                        if (mn_match && v0_str) {
+                                memcpy(bp->fw_version, v0_str, v0_len);
+                                bp->fw_version[v0_len] = ' ';
+                                goto vpd_done;
+                        }
+                }
+                goto vpd_done;
+        }
+
+vpd_done:
+        kfree(data);
+}
+
 static int __devinit
 bnx2_init_board(struct pci_dev *pdev, struct net_device *dev)
 {
@@ -7895,10 +7982,18 @@ bnx2_init_board(struct pci_dev *pdev, struct net_device *dev)
                 goto err_out_unmap;
         }
 
+        bnx2_read_vpd_fw_ver(bp);
+
+        j = strlen(bp->fw_version);
         reg = bnx2_shmem_rd(bp, BNX2_DEV_INFO_BC_REV);
-        for (i = 0, j = 0; i < 3; i++) {
+        for (i = 0; i < 3 && j < 24; i++) {
                 u8 num, k, skip0;
 
+                if (i == 0) {
+                        bp->fw_version[j++] = 'b';
+                        bp->fw_version[j++] = 'c';
+                        bp->fw_version[j++] = ' ';
+                }
                 num = (u8) (reg >> (24 - (i * 8)));
                 for (k = 100, skip0 = 1; k >= 1; num %= k, k /= 10) {
                         if (num >= k || !skip0 || k == 1) {
@@ -7929,8 +8024,9 @@ bnx2_init_board(struct pci_dev *pdev, struct net_device *dev)
             reg != BNX2_CONDITION_MFW_RUN_NONE) {
                 u32 addr = bnx2_shmem_rd(bp, BNX2_MFW_VER_PTR);
 
-                bp->fw_version[j++] = ' ';
-                for (i = 0; i < 3; i++) {
+                if (j < 32)
+                        bp->fw_version[j++] = ' ';
+                for (i = 0; i < 3 && j < 28; i++) {
                         reg = bnx2_reg_rd_ind(bp, addr + i * 4);
                         reg = swab32(reg);
                         memcpy(&bp->fw_version[j], &reg, 4);