cxgb3 - TP SRAM update

The chip executes microcode present in internal RAM,
whose content is loaded from EEPROM on power cycle.
This patch allows an update of the microcode through PIO
without forcing a power cycle.

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

1 files changed, 43 insertions, 0 deletions

diff --git a/drivers/net/cxgb3/cxgb3_main.c b/drivers/net/cxgb3/cxgb3_main.c
index d8a1f5452c51..15defe4c4f05 100644
--- a/drivers/net/cxgb3/cxgb3_main.c
+++ b/drivers/net/cxgb3/cxgb3_main.c
@@ -2088,6 +2088,42 @@ static void cxgb_netpoll(struct net_device *dev)
 }
 #endif
 
+#define TPSRAM_NAME "t3%c_protocol_sram-%d.%d.%d.bin"
+int update_tpsram(struct adapter *adap)
+{
+        const struct firmware *tpsram;
+        char buf[64];
+        struct device *dev = &adap->pdev->dev;
+        int ret;
+        char rev;
+        
+        rev = adap->params.rev == T3_REV_B2 ? 'b' : 'a';
+
+        snprintf(buf, sizeof(buf), TPSRAM_NAME, rev,
+                 TP_VERSION_MAJOR, TP_VERSION_MINOR, TP_VERSION_MICRO);
+
+        ret = request_firmware(&tpsram, buf, dev);
+        if (ret < 0) {
+                dev_err(dev, "could not load TP SRAM: unable to load %s\n",
+                        buf);
+                return ret;
+        }
+        
+        ret = t3_check_tpsram(adap, tpsram->data, tpsram->size);
+        if (ret)
+                goto release_tpsram;    
+
+        ret = t3_set_proto_sram(adap, tpsram->data);
+        if (ret)
+                dev_err(dev, "loading protocol SRAM failed\n");
+
+release_tpsram:
+        release_firmware(tpsram);
+        
+        return ret;
+}
+
+
 /*
  * Periodic accumulation of MAC statistics.
  */
@@ -2437,6 +2473,13 @@ static int __devinit init_one(struct pci_dev *pdev,
                 goto out_free_dev;
         }
 
+        err = t3_check_tpsram_version(adapter);
+        if (err == -EINVAL)
+                err = update_tpsram(adapter);
+
+        if (err)
+                goto out_free_dev;
+                
         /*
          * The card is now ready to go.  If any errors occur during device
          * registration we do not fail the whole card but rather proceed only