1 files changed, 175 insertions, 70 deletions

diff --git a/drivers/net/wireless/iwlwifi/mvm/nvm.c b/drivers/net/wireless/iwlwifi/mvm/nvm.c
index edb94ea3165..808f78f6fbf 100644
--- a/drivers/net/wireless/iwlwifi/mvm/nvm.c
+++ b/drivers/net/wireless/iwlwifi/mvm/nvm.c
@@ -5,7 +5,7 @@
  *
  * GPL LICENSE SUMMARY
  *
- * Copyright(c) 2012 - 2013 Intel Corporation. All rights reserved.
+ * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of version 2 of the GNU General Public License as
@@ -30,7 +30,7 @@
  *
  * BSD LICENSE
  *
- * Copyright(c) 2012 - 2013 Intel Corporation. All rights reserved.
+ * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -67,21 +67,19 @@
 #include "iwl-eeprom-read.h"
 #include "iwl-nvm-parse.h"
 
-/* list of NVM sections we are allowed/need to read */
-static const int nvm_to_read[] = {
-	NVM_SECTION_TYPE_HW,
-	NVM_SECTION_TYPE_SW,
-	NVM_SECTION_TYPE_CALIBRATION,
-	NVM_SECTION_TYPE_PRODUCTION,
-};
-
 /* Default NVM size to read */
 #define IWL_NVM_DEFAULT_CHUNK_SIZE (2*1024)
-#define IWL_MAX_NVM_SECTION_SIZE 6000
+#define IWL_MAX_NVM_SECTION_SIZE 7000
 
 #define NVM_WRITE_OPCODE 1
 #define NVM_READ_OPCODE 0
 
+/* load nvm chunk response */
+enum {
+	READ_NVM_CHUNK_SUCCEED = 0,
+	READ_NVM_CHUNK_NOT_VALID_ADDRESS = 1
+};
+
 /*
  * prepare the NVM host command w/ the pointers to the nvm buffer
  * and send it to fw
@@ -98,7 +96,7 @@ static int iwl_nvm_write_chunk(struct iwl_mvm *mvm, u16 section,
 	struct iwl_host_cmd cmd = {
 		.id = NVM_ACCESS_CMD,
 		.len = { sizeof(struct iwl_nvm_access_cmd), length },
-		.flags = CMD_SYNC | CMD_SEND_IN_RFKILL,
+		.flags = CMD_SEND_IN_RFKILL,
 		.data = { &nvm_access_cmd, data },
 		/* data may come from vmalloc, so use _DUP */
 		.dataflags = { 0, IWL_HCMD_DFL_DUP },
@@ -120,7 +118,7 @@ static int iwl_nvm_read_chunk(struct iwl_mvm *mvm, u16 section,
 	struct iwl_rx_packet *pkt;
 	struct iwl_host_cmd cmd = {
 		.id = NVM_ACCESS_CMD,
-		.flags = CMD_SYNC | CMD_WANT_SKB | CMD_SEND_IN_RFKILL,
+		.flags = CMD_WANT_SKB | CMD_SEND_IN_RFKILL,
 		.data = { &nvm_access_cmd, },
 	};
 	int ret, bytes_read, offset_read;
@@ -147,10 +145,26 @@ static int iwl_nvm_read_chunk(struct iwl_mvm *mvm, u16 section,
 	offset_read = le16_to_cpu(nvm_resp->offset);
 	resp_data = nvm_resp->data;
 	if (ret) {
-		IWL_ERR(mvm,
-			"NVM access command failed with status %d (device: %s)\n",
-			ret, mvm->cfg->name);
-		ret = -EINVAL;
+		if ((offset != 0) &&
+		    (ret == READ_NVM_CHUNK_NOT_VALID_ADDRESS)) {
+			/*
+			 * meaning of NOT_VALID_ADDRESS:
+			 * driver try to read chunk from address that is
+			 * multiple of 2K and got an error since addr is empty.
+			 * meaning of (offset != 0): driver already
+			 * read valid data from another chunk so this case
+			 * is not an error.
+			 */
+			IWL_DEBUG_EEPROM(mvm->trans->dev,
+					 "NVM access command failed on offset 0x%x since that section size is multiple 2K\n",
+					 offset);
+			ret = 0;
+		} else {
+			IWL_DEBUG_EEPROM(mvm->trans->dev,
+					 "NVM access command failed with status %d (device: %s)\n",
+					 ret, mvm->cfg->name);
+			ret = -EIO;
+		}
 		goto exit;
 	}
 
@@ -219,9 +233,9 @@ static int iwl_nvm_read_section(struct iwl_mvm *mvm, u16 section,
 	while (ret == length) {
 		ret = iwl_nvm_read_chunk(mvm, section, offset, length, data);
 		if (ret < 0) {
-			IWL_ERR(mvm,
-				"Cannot read NVM from section %d offset %d, length %d\n",
-				section, offset, length);
+			IWL_DEBUG_EEPROM(mvm->trans->dev,
+					 "Cannot read NVM from section %d offset %d, length %d\n",
+					 section, offset, length);
 			return ret;
 		}
 		offset += ret;
@@ -236,29 +250,53 @@ static struct iwl_nvm_data *
 iwl_parse_nvm_sections(struct iwl_mvm *mvm)
 {
 	struct iwl_nvm_section *sections = mvm->nvm_sections;
-	const __le16 *hw, *sw, *calib;
+	const __le16 *hw, *sw, *calib, *regulatory, *mac_override;
 
 	/* Checking for required sections */
-	if (!mvm->nvm_sections[NVM_SECTION_TYPE_SW].data ||
-	    !mvm->nvm_sections[NVM_SECTION_TYPE_HW].data) {
-		IWL_ERR(mvm, "Can't parse empty NVM sections\n");
-		return NULL;
+	if (mvm->trans->cfg->device_family != IWL_DEVICE_FAMILY_8000) {
+		if (!mvm->nvm_sections[NVM_SECTION_TYPE_SW].data ||
+		    !mvm->nvm_sections[mvm->cfg->nvm_hw_section_num].data) {
+			IWL_ERR(mvm, "Can't parse empty NVM sections\n");
+			return NULL;
+		}
+	} else {
+		/* SW and REGULATORY sections are mandatory */
+		if (!mvm->nvm_sections[NVM_SECTION_TYPE_SW].data ||
+		    !mvm->nvm_sections[NVM_SECTION_TYPE_REGULATORY].data) {
+			IWL_ERR(mvm,
+				"Can't parse empty family 8000 NVM sections\n");
+			return NULL;
+		}
+		/* MAC_OVERRIDE or at least HW section must exist */
+		if (!mvm->nvm_sections[mvm->cfg->nvm_hw_section_num].data &&
+		    !mvm->nvm_sections[NVM_SECTION_TYPE_MAC_OVERRIDE].data) {
+			IWL_ERR(mvm,
+				"Can't parse mac_address, empty sections\n");
+			return NULL;
+		}
 	}
 
 	if (WARN_ON(!mvm->cfg))
 		return NULL;
 
-	hw = (const __le16 *)sections[NVM_SECTION_TYPE_HW].data;
+	hw = (const __le16 *)sections[mvm->cfg->nvm_hw_section_num].data;
 	sw = (const __le16 *)sections[NVM_SECTION_TYPE_SW].data;
 	calib = (const __le16 *)sections[NVM_SECTION_TYPE_CALIBRATION].data;
+	regulatory = (const __le16 *)sections[NVM_SECTION_TYPE_REGULATORY].data;
+	mac_override =
+		(const __le16 *)sections[NVM_SECTION_TYPE_MAC_OVERRIDE].data;
+
 	return iwl_parse_nvm_data(mvm->trans->dev, mvm->cfg, hw, sw, calib,
-				  iwl_fw_valid_tx_ant(mvm->fw),
-				  iwl_fw_valid_rx_ant(mvm->fw));
+				  regulatory, mac_override,
+				  mvm->fw->valid_tx_ant,
+				  mvm->fw->valid_rx_ant);
 }
 
 #define MAX_NVM_FILE_LEN	16384
 
 /*
+ * Reads external NVM from a file into mvm->nvm_sections
+ *
  * HOW TO CREATE THE NVM FILE FORMAT:
  * ------------------------------
  * 1. create hex file, format:
@@ -277,19 +315,24 @@ iwl_parse_nvm_sections(struct iwl_mvm *mvm)
  *
  * 4. save as "iNVM_xxx.bin" under /lib/firmware
  */
-static int iwl_mvm_load_external_nvm(struct iwl_mvm *mvm)
+static int iwl_mvm_read_external_nvm(struct iwl_mvm *mvm)
 {
-	int ret, section_id, section_size;
+	int ret, section_size;
+	u16 section_id;
 	const struct firmware *fw_entry;
 	const struct {
 		__le16 word1;
 		__le16 word2;
 		u8 data[];
 	} *file_sec;
-	const u8 *eof;
+	const u8 *eof, *temp;
 
 #define NVM_WORD1_LEN(x) (8 * (x & 0x03FF))
 #define NVM_WORD2_ID(x) (x >> 12)
+#define NVM_WORD2_LEN_FAMILY_8000(x) (2 * ((x & 0xFF) << 8 | x >> 8))
+#define NVM_WORD1_ID_FAMILY_8000(x) (x >> 4)
+
+	IWL_DEBUG_EEPROM(mvm->trans->dev, "Read from external NVM\n");
 
 	/*
 	 * Obtain NVM image via request_firmware. Since we already used
@@ -297,16 +340,16 @@ static int iwl_mvm_load_external_nvm(struct iwl_mvm *mvm)
 	 * get here after that we assume the NVM request can be satisfied
 	 * synchronously.
 	 */
-	ret = request_firmware(&fw_entry, iwlwifi_mod_params.nvm_file,
+	ret = request_firmware(&fw_entry, mvm->nvm_file_name,
 			       mvm->trans->dev);
 	if (ret) {
 		IWL_ERR(mvm, "ERROR: %s isn't available %d\n",
-			iwlwifi_mod_params.nvm_file, ret);
+			mvm->nvm_file_name, ret);
 		return ret;
 	}
 
 	IWL_INFO(mvm, "Loaded NVM file %s (%zu bytes)\n",
-		 iwlwifi_mod_params.nvm_file, fw_entry->size);
+		 mvm->nvm_file_name, fw_entry->size);
 
 	if (fw_entry->size < sizeof(*file_sec)) {
 		IWL_ERR(mvm, "NVM file too small\n");
@@ -338,8 +381,16 @@ static int iwl_mvm_load_external_nvm(struct iwl_mvm *mvm)
 			break;
 		}
 
-		section_size = 2 * NVM_WORD1_LEN(le16_to_cpu(file_sec->word1));
-		section_id = NVM_WORD2_ID(le16_to_cpu(file_sec->word2));
+		if (mvm->trans->cfg->device_family != IWL_DEVICE_FAMILY_8000) {
+			section_size =
+				2 * NVM_WORD1_LEN(le16_to_cpu(file_sec->word1));
+			section_id = NVM_WORD2_ID(le16_to_cpu(file_sec->word2));
+		} else {
+			section_size = 2 * NVM_WORD2_LEN_FAMILY_8000(
+						le16_to_cpu(file_sec->word2));
+			section_id = NVM_WORD1_ID_FAMILY_8000(
+						le16_to_cpu(file_sec->word1));
+		}
 
 		if (section_size > IWL_MAX_NVM_SECTION_SIZE) {
 			IWL_ERR(mvm, "ERROR - section too large (%d)\n",
@@ -362,12 +413,19 @@ static int iwl_mvm_load_external_nvm(struct iwl_mvm *mvm)
 			break;
 		}
 
-		ret = iwl_nvm_write_section(mvm, section_id, file_sec->data,
-					    section_size);
-		if (ret < 0) {
-			IWL_ERR(mvm, "iwl_mvm_send_cmd failed: %d\n", ret);
+		if (WARN(section_id >= NVM_MAX_NUM_SECTIONS,
+			 "Invalid NVM section ID %d\n", section_id)) {
+			ret = -EINVAL;
+			break;
+		}
+
+		temp = kmemdup(file_sec->data, section_size, GFP_KERNEL);
+		if (!temp) {
+			ret = -ENOMEM;
 			break;
 		}
+		mvm->nvm_sections[section_id].data = temp;
+		mvm->nvm_sections[section_id].length = section_size;
 
 		/* advance to the next section */
 		file_sec = (void *)(file_sec->data + section_size);
@@ -377,45 +435,92 @@ out:
 	return ret;
 }
 
-int iwl_nvm_init(struct iwl_mvm *mvm)
+/* Loads the NVM data stored in mvm->nvm_sections into the NIC */
+int iwl_mvm_load_nvm_to_nic(struct iwl_mvm *mvm)
+{
+	int i, ret = 0;
+	struct iwl_nvm_section *sections = mvm->nvm_sections;
+
+	IWL_DEBUG_EEPROM(mvm->trans->dev, "'Write to NVM\n");
+
+	for (i = 0; i < ARRAY_SIZE(mvm->nvm_sections); i++) {
+		if (!mvm->nvm_sections[i].data || !mvm->nvm_sections[i].length)
+			continue;
+		ret = iwl_nvm_write_section(mvm, i, sections[i].data,
+					    sections[i].length);
+		if (ret < 0) {
+			IWL_ERR(mvm, "iwl_mvm_send_cmd failed: %d\n", ret);
+			break;
+		}
+	}
+	return ret;
+}
+
+int iwl_nvm_init(struct iwl_mvm *mvm, bool read_nvm_from_nic)
 {
-	int ret, i, section;
+	int ret, section;
 	u8 *nvm_buffer, *temp;
 
+	if (WARN_ON_ONCE(mvm->cfg->nvm_hw_section_num >= NVM_MAX_NUM_SECTIONS))
+		return -EINVAL;
+
+	/* load NVM values from nic */
+	if (read_nvm_from_nic) {
+		/* Read From FW NVM */
+		IWL_DEBUG_EEPROM(mvm->trans->dev, "Read from NVM\n");
+
+		nvm_buffer = kmalloc(mvm->cfg->base_params->eeprom_size,
+				     GFP_KERNEL);
+		if (!nvm_buffer)
+			return -ENOMEM;
+		for (section = 0; section < NVM_MAX_NUM_SECTIONS; section++) {
+			/* we override the constness for initial read */
+			ret = iwl_nvm_read_section(mvm, section, nvm_buffer);
+			if (ret < 0)
+				continue;
+			temp = kmemdup(nvm_buffer, ret, GFP_KERNEL);
+			if (!temp) {
+				ret = -ENOMEM;
+				break;
+			}
+			mvm->nvm_sections[section].data = temp;
+			mvm->nvm_sections[section].length = ret;
+
+#ifdef CONFIG_IWLWIFI_DEBUGFS
+			switch (section) {
+			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:
+				if (section == mvm->cfg->nvm_hw_section_num) {
+					mvm->nvm_hw_blob.data = temp;
+					mvm->nvm_hw_blob.size = ret;
+					break;
+				}
+			}
+#endif
+		}
+		kfree(nvm_buffer);
+	}
+
 	/* load external NVM if configured */
-	if (iwlwifi_mod_params.nvm_file) {
+	if (mvm->nvm_file_name) {
 		/* move to External NVM flow */
-		ret = iwl_mvm_load_external_nvm(mvm);
+		ret = iwl_mvm_read_external_nvm(mvm);
 		if (ret)
 			return ret;
 	}
 
-	/* Read From FW NVM */
-	IWL_DEBUG_EEPROM(mvm->trans->dev, "Read from NVM\n");
-
-	/* TODO: find correct NVM max size for a section */
-	nvm_buffer = kmalloc(mvm->cfg->base_params->eeprom_size,
-			     GFP_KERNEL);
-	if (!nvm_buffer)
-		return -ENOMEM;
-	for (i = 0; i < ARRAY_SIZE(nvm_to_read); i++) {
-		section = nvm_to_read[i];
-		/* we override the constness for initial read */
-		ret = iwl_nvm_read_section(mvm, section, nvm_buffer);
-		if (ret < 0)
-			break;
-		temp = kmemdup(nvm_buffer, ret, GFP_KERNEL);
-		if (!temp) {
-			ret = -ENOMEM;
-			break;
-		}
-		mvm->nvm_sections[section].data = temp;
-		mvm->nvm_sections[section].length = ret;
-	}
-	kfree(nvm_buffer);
-	if (ret < 0)
-		return ret;
-
+	/* parse the relevant nvm sections */
 	mvm->nvm_data = iwl_parse_nvm_sections(mvm);
 	if (!mvm->nvm_data)
 		return -ENODATA;