liquidio: show NIC's U-Boot version in a dev_info() message

Signed-off-by: Weilin Chang <weilin.chang@cavium.com>
Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/cavium/liquidio/octeon_console.c b/drivers/net/ethernet/cavium/liquidio/octeon_console.c
index 19e5212..ec3dd69 100644 (file)
--- a/drivers/net/ethernet/cavium/liquidio/octeon_console.c
+++ b/drivers/net/ethernet/cavium/liquidio/octeon_console.c
@@ -574,6 +574,82 @@ int octeon_init_consoles(struct octeon_device *oct)
        return ret;
 }
 
+static void octeon_get_uboot_version(struct octeon_device *oct)
+{
+       s32 bytes_read, tries, total_read;
+       struct octeon_console *console;
+       u32 console_num = 0;
+       char *uboot_ver;
+       char *buf;
+       char *p;
+
+#define OCTEON_UBOOT_VER_BUF_SIZE 512
+       buf = kmalloc(OCTEON_UBOOT_VER_BUF_SIZE, GFP_KERNEL);
+       if (!buf)
+               return;
+
+       if (octeon_console_send_cmd(oct, "setenv stdout pci\n", 50)) {
+               kfree(buf);
+               return;
+       }
+
+       if (octeon_console_send_cmd(oct, "version\n", 1)) {
+               kfree(buf);
+               return;
+       }
+
+       console = &oct->console[console_num];
+       tries = 0;
+       total_read = 0;
+
+       do {
+               /* Take console output regardless of whether it will
+                * be logged
+                */
+               bytes_read =
+                       octeon_console_read(oct,
+                                           console_num, buf + total_read,
+                                           OCTEON_UBOOT_VER_BUF_SIZE - 1 -
+                                           total_read);
+               if (bytes_read > 0) {
+                       buf[bytes_read] = '\0';
+
+                       total_read += bytes_read;
+                       if (console->waiting)
+                               octeon_console_handle_result(oct, console_num);
+               } else if (bytes_read < 0) {
+                       dev_err(&oct->pci_dev->dev, "Error reading console %u, ret=%d\n",
+                               console_num, bytes_read);
+               }
+
+               tries++;
+       } while ((bytes_read > 0) && (tries < 16));
+
+       /* If nothing is read after polling the console,
+        * output any leftovers if any
+        */
+       if ((total_read == 0) && (console->leftover[0])) {
+               dev_dbg(&oct->pci_dev->dev, "%u: %s\n",
+                       console_num, console->leftover);
+               console->leftover[0] = '\0';
+       }
+
+       buf[OCTEON_UBOOT_VER_BUF_SIZE - 1] = '\0';
+
+       uboot_ver = strstr(buf, "U-Boot");
+       if (uboot_ver) {
+               p = strstr(uboot_ver, "mips");
+               if (p) {
+                       p--;
+                       *p = '\0';
+                       dev_info(&oct->pci_dev->dev, "%s\n", uboot_ver);
+               }
+       }
+
+       kfree(buf);
+       octeon_console_send_cmd(oct, "setenv stdout serial\n", 50);
+}
+
 int octeon_add_console(struct octeon_device *oct, u32 console_num,
                       char *dbg_enb)
 {
@@ -611,6 +687,8 @@ int octeon_add_console(struct octeon_device *oct, u32 console_num,
 
                work = &oct->console_poll_work[console_num].work;
 
+               octeon_get_uboot_version(oct);
+
                INIT_DELAYED_WORK(work, check_console);
                oct->console_poll_work[console_num].ctxptr = (void *)oct;
                oct->console_poll_work[console_num].ctxul = console_num;