iwlwifi: mvm: dump NVM from debugfs

This allows to see the content of the NVM the driver reads.
Note that the output is in binary, and requires some
external user space tool to display the data properly.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>

diff --git a/drivers/net/wireless/iwlwifi/mvm/debugfs.c b/drivers/net/wireless/iwlwifi/mvm/debugfs.c
index 931723a03a43d572a812cc0ed689d78a0a092d5c..e8f62a6a1b57098a3f456e9beff974f7caa3493c 100644 (file)
--- a/drivers/net/wireless/iwlwifi/mvm/debugfs.c
+++ b/drivers/net/wireless/iwlwifi/mvm/debugfs.c
@@ -720,6 +720,19 @@ int iwl_mvm_dbgfs_register(struct iwl_mvm *mvm, struct dentry *dbgfs_dir)
                goto err;
 #endif
 
+       if (!debugfs_create_blob("nvm_hw", S_IRUSR,
+                                 mvm->debugfs_dir, &mvm->nvm_hw_blob))
+               goto err;
+       if (!debugfs_create_blob("nvm_sw", S_IRUSR,
+                                 mvm->debugfs_dir, &mvm->nvm_sw_blob))
+               goto err;
+       if (!debugfs_create_blob("nvm_calib", S_IRUSR,
+                                 mvm->debugfs_dir, &mvm->nvm_calib_blob))
+               goto err;
+       if (!debugfs_create_blob("nvm_prod", S_IRUSR,
+                                 mvm->debugfs_dir, &mvm->nvm_prod_blob))
+               goto err;
+
        /*
         * Create a symlink with mac80211. It will be removed when mac80211
         * exists (before the opmode exists which removes the target.)

diff --git a/drivers/net/wireless/iwlwifi/mvm/mvm.h b/drivers/net/wireless/iwlwifi/mvm/mvm.h
index e7c97ccec5e8ea076e159073bdd1b152a1ce6db6..7dc57cfe58035cfc5128e1fa8f3969f46584d7c9 100644 (file)
--- a/drivers/net/wireless/iwlwifi/mvm/mvm.h
+++ b/drivers/net/wireless/iwlwifi/mvm/mvm.h
@@ -494,6 +494,11 @@ struct iwl_mvm {
        u32 dbgfs_sram_offset, dbgfs_sram_len;
        bool disable_power_off;
        bool disable_power_off_d3;
+
+       struct debugfs_blob_wrapper nvm_hw_blob;
+       struct debugfs_blob_wrapper nvm_sw_blob;
+       struct debugfs_blob_wrapper nvm_calib_blob;
+       struct debugfs_blob_wrapper nvm_prod_blob;
 #endif
 
        struct iwl_mvm_phy_ctxt phy_ctxts[NUM_PHY_CTX];

diff --git a/drivers/net/wireless/iwlwifi/mvm/nvm.c b/drivers/net/wireless/iwlwifi/mvm/nvm.c
index 2beffd028b67cef7469faa40899b6b6992501976..48089b1625fff7c1dfc804c6f84a9e68ae56d282 100644 (file)
--- a/drivers/net/wireless/iwlwifi/mvm/nvm.c
+++ b/drivers/net/wireless/iwlwifi/mvm/nvm.c
@@ -443,6 +443,29 @@ int iwl_nvm_init(struct iwl_mvm *mvm)
                        }
                        mvm->nvm_sections[section].data = temp;
                        mvm->nvm_sections[section].length = ret;
+
+#ifdef CONFIG_IWLWIFI_DEBUGFS
+                       switch (section) {
+                       case NVM_SECTION_TYPE_HW:
+                               mvm->nvm_hw_blob.data = temp;
+                               mvm->nvm_hw_blob.size = ret;
+                               break;
+                       case NVM_SECTION_TYPE_SW:
+                               mvm->nvm_sw_blob.data = temp;
+                               mvm->nvm_sw_blob.size  = ret;
+                               break;
+                       case NVM_SECTION_TYPE_CALIBRATION:
+                               mvm->nvm_calib_blob.data = temp;
+                               mvm->nvm_calib_blob.size  = ret;
+                               break;
+                       case NVM_SECTION_TYPE_PRODUCTION:
+                               mvm->nvm_prod_blob.data = temp;
+                               mvm->nvm_prod_blob.size  = ret;
+                               break;
+                       default:
+                               WARN(1, "section: %d", section);
+                       }
+#endif
                }
                kfree(nvm_buffer);
                if (ret < 0)