cxgb3 - Auto-load FW if mismatch detected

The driver attempts to upgrade the FW if the card has the wrong version.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig
index 5ff0922..1b6459b 100644 (file)
--- a/drivers/net/Kconfig
+++ b/drivers/net/Kconfig
@@ -2374,6 +2374,7 @@ config CHELSIO_T1_NAPI
 config CHELSIO_T3
         tristate "Chelsio Communications T3 10Gb Ethernet support"
         depends on PCI
+       select FW_LOADER
         help
           This driver supports Chelsio T3-based gigabit and 10Gb Ethernet
           adapters.

diff --git a/drivers/net/cxgb3/cxgb3_main.c b/drivers/net/cxgb3/cxgb3_main.c
index eb0a4e0..b9bcda8 100644 (file)
--- a/drivers/net/cxgb3/cxgb3_main.c
+++ b/drivers/net/cxgb3/cxgb3_main.c
@@ -42,6 +42,7 @@
 #include <linux/workqueue.h>
 #include <linux/proc_fs.h>
 #include <linux/rtnetlink.h>
+#include <linux/firmware.h>
 #include <asm/uaccess.h>
 
 #include "common.h"
@@ -707,6 +708,28 @@ static void bind_qsets(struct adapter *adap)
        }
 }
 
+#define FW_FNAME "t3fw-%d.%d.bin"
+
+static int upgrade_fw(struct adapter *adap)
+{
+       int ret;
+       char buf[64];
+       const struct firmware *fw;
+       struct device *dev = &adap->pdev->dev;
+
+       snprintf(buf, sizeof(buf), FW_FNAME, FW_VERSION_MAJOR,
+                FW_VERSION_MINOR);
+       ret = request_firmware(&fw, buf, dev);
+       if (ret < 0) {
+               dev_err(dev, "could not upgrade firmware: unable to load %s\n",
+                       buf);
+               return ret;
+       }
+       ret = t3_load_fw(adap, fw->data, fw->size);
+       release_firmware(fw);
+       return ret;
+}
+
 /**
  *     cxgb_up - enable the adapter
  *     @adapter: adapter being enabled
@@ -723,6 +746,8 @@ static int cxgb_up(struct adapter *adap)
 
        if (!(adap->flags & FULL_INIT_DONE)) {
                err = t3_check_fw_version(adap);
+               if (err == -EINVAL)
+                       err = upgrade_fw(adap);
                if (err)
                        goto out;
 

diff --git a/drivers/net/cxgb3/t3_hw.c b/drivers/net/cxgb3/t3_hw.c
index eaa7a2e..983ee81 100644 (file)
--- a/drivers/net/cxgb3/t3_hw.c
+++ b/drivers/net/cxgb3/t3_hw.c
@@ -681,7 +681,8 @@ enum {
        SF_ERASE_SECTOR = 0xd8, /* erase sector */
 
        FW_FLASH_BOOT_ADDR = 0x70000,   /* start address of FW in flash */
-       FW_VERS_ADDR = 0x77ffc  /* flash address holding FW version */
+       FW_VERS_ADDR = 0x77ffc,    /* flash address holding FW version */
+       FW_MIN_SIZE = 8            /* at least version and csum */
 };
 
 /**
@@ -935,7 +936,7 @@ int t3_load_fw(struct adapter *adapter, const u8 *fw_data, unsigned int size)
        const u32 *p = (const u32 *)fw_data;
        int ret, addr, fw_sector = FW_FLASH_BOOT_ADDR >> 16;
 
-       if (size & 3)
+       if ((size & 3) || size < FW_MIN_SIZE)
                return -EINVAL;
        if (size > FW_VERS_ADDR + 8 - FW_FLASH_BOOT_ADDR)
                return -EFBIG;