iwlwifi: move eeprom into priv

The whole code around eeprom is distributed
across whole bunch of different files, most
of which belong to the to-be-DVM code. As a
result, it is currently very hard to split
out the EEPROM code to be generic. However,
it is also quite unlikely that the current
EEPROM code will be needed by the MVM code
as that has different mechanisms to query
the EEPROM (it does so through the uCode.)

So, at least temporarily, move everything
into priv. If it becomes necessary to use
the code from MVM, we will have to split it
out, but then it's also easier since we'll
know what pieces we need.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 123 insertions, 67 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-eeprom.c b/drivers/net/wireless/iwlwifi/iwl-eeprom.c
index 12744b053bc5..1db98d67706d 100644
--- a/drivers/net/wireless/iwlwifi/iwl-eeprom.c
+++ b/drivers/net/wireless/iwlwifi/iwl-eeprom.c
@@ -187,33 +187,33 @@ static void iwl_eeprom_release_semaphore(struct iwl_trans *trans)
 
 }
 
-static int iwl_eeprom_verify_signature(struct iwl_trans *trans)
+static int iwl_eeprom_verify_signature(struct iwl_priv *priv)
 {
-	u32 gp = iwl_read32(trans, CSR_EEPROM_GP) &
+	u32 gp = iwl_read32(trans(priv), CSR_EEPROM_GP) &
 			   CSR_EEPROM_GP_VALID_MSK;
 	int ret = 0;
 
-	IWL_DEBUG_EEPROM(trans, "EEPROM signature=0x%08x\n", gp);
+	IWL_DEBUG_EEPROM(priv, "EEPROM signature=0x%08x\n", gp);
 	switch (gp) {
 	case CSR_EEPROM_GP_BAD_SIG_EEP_GOOD_SIG_OTP:
-		if (trans->nvm_device_type != NVM_DEVICE_TYPE_OTP) {
-			IWL_ERR(trans, "EEPROM with bad signature: 0x%08x\n",
+		if (priv->nvm_device_type != NVM_DEVICE_TYPE_OTP) {
+			IWL_ERR(priv, "EEPROM with bad signature: 0x%08x\n",
 				gp);
 			ret = -ENOENT;
 		}
 		break;
 	case CSR_EEPROM_GP_GOOD_SIG_EEP_LESS_THAN_4K:
 	case CSR_EEPROM_GP_GOOD_SIG_EEP_MORE_THAN_4K:
-		if (trans->nvm_device_type != NVM_DEVICE_TYPE_EEPROM) {
-			IWL_ERR(trans, "OTP with bad signature: 0x%08x\n", gp);
+		if (priv->nvm_device_type != NVM_DEVICE_TYPE_EEPROM) {
+			IWL_ERR(priv, "OTP with bad signature: 0x%08x\n", gp);
 			ret = -ENOENT;
 		}
 		break;
 	case CSR_EEPROM_GP_BAD_SIGNATURE_BOTH_EEP_AND_OTP:
 	default:
-		IWL_ERR(trans, "bad EEPROM/OTP signature, type=%s, "
+		IWL_ERR(priv, "bad EEPROM/OTP signature, type=%s, "
 			"EEPROM_GP=0x%08x\n",
-			(trans->nvm_device_type == NVM_DEVICE_TYPE_OTP)
+			(priv->nvm_device_type == NVM_DEVICE_TYPE_OTP)
 			? "OTP" : "EEPROM", gp);
 		ret = -ENOENT;
 		break;
@@ -221,11 +221,11 @@ static int iwl_eeprom_verify_signature(struct iwl_trans *trans)
 	return ret;
 }
 
-u16 iwl_eeprom_query16(const struct iwl_shared *shrd, size_t offset)
+u16 iwl_eeprom_query16(struct iwl_priv *priv, size_t offset)
 {
-	if (!shrd->eeprom)
+	if (!priv->eeprom)
 		return 0;
-	return (u16)shrd->eeprom[offset] | ((u16)shrd->eeprom[offset + 1] << 8);
+	return (u16)priv->eeprom[offset] | ((u16)priv->eeprom[offset + 1] << 8);
 }
 
 int iwl_eeprom_check_version(struct iwl_priv *priv)
@@ -233,8 +233,8 @@ int iwl_eeprom_check_version(struct iwl_priv *priv)
 	u16 eeprom_ver;
 	u16 calib_ver;
 
-	eeprom_ver = iwl_eeprom_query16(priv->shrd, EEPROM_VERSION);
-	calib_ver = iwl_eeprom_calib_version(priv->shrd);
+	eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION);
+	calib_ver = iwl_eeprom_calib_version(priv);
 
 	if (eeprom_ver < cfg(priv)->eeprom_ver ||
 	    calib_ver < cfg(priv)->eeprom_calib_ver)
@@ -255,10 +255,9 @@ err:
 
 int iwl_eeprom_init_hw_params(struct iwl_priv *priv)
 {
-	struct iwl_shared *shrd = priv->shrd;
 	u16 radio_cfg;
 
-	priv->hw_params.sku = iwl_eeprom_query16(shrd, EEPROM_SKU_CAP);
+	priv->hw_params.sku = iwl_eeprom_query16(priv, EEPROM_SKU_CAP);
 	if (priv->hw_params.sku & EEPROM_SKU_CAP_11N_ENABLE &&
 	    !cfg(priv)->ht_params) {
 		IWL_ERR(priv, "Invalid 11n configuration\n");
@@ -272,7 +271,7 @@ int iwl_eeprom_init_hw_params(struct iwl_priv *priv)
 
 	IWL_INFO(priv, "Device SKU: 0x%X\n", priv->hw_params.sku);
 
-	radio_cfg = iwl_eeprom_query16(shrd, EEPROM_RADIO_CONFIG);
+	radio_cfg = iwl_eeprom_query16(priv, EEPROM_RADIO_CONFIG);
 
 	priv->hw_params.valid_tx_ant = EEPROM_RF_CFG_TX_ANT_MSK(radio_cfg);
 	priv->hw_params.valid_rx_ant = EEPROM_RF_CFG_RX_ANT_MSK(radio_cfg);
@@ -296,9 +295,67 @@ int iwl_eeprom_init_hw_params(struct iwl_priv *priv)
 	return 0;
 }
 
-void iwl_eeprom_get_mac(const struct iwl_shared *shrd, u8 *mac)
+u16 iwl_eeprom_calib_version(struct iwl_priv *priv)
 {
-	const u8 *addr = iwl_eeprom_query_addr(shrd,
+	struct iwl_eeprom_calib_hdr *hdr;
+
+	hdr = (struct iwl_eeprom_calib_hdr *)iwl_eeprom_query_addr(priv,
+							EEPROM_CALIB_ALL);
+	return hdr->version;
+}
+
+static u32 eeprom_indirect_address(struct iwl_priv *priv, u32 address)
+{
+	u16 offset = 0;
+
+	if ((address & INDIRECT_ADDRESS) == 0)
+		return address;
+
+	switch (address & INDIRECT_TYPE_MSK) {
+	case INDIRECT_HOST:
+		offset = iwl_eeprom_query16(priv, EEPROM_LINK_HOST);
+		break;
+	case INDIRECT_GENERAL:
+		offset = iwl_eeprom_query16(priv, EEPROM_LINK_GENERAL);
+		break;
+	case INDIRECT_REGULATORY:
+		offset = iwl_eeprom_query16(priv, EEPROM_LINK_REGULATORY);
+		break;
+	case INDIRECT_TXP_LIMIT:
+		offset = iwl_eeprom_query16(priv, EEPROM_LINK_TXP_LIMIT);
+		break;
+	case INDIRECT_TXP_LIMIT_SIZE:
+		offset = iwl_eeprom_query16(priv, EEPROM_LINK_TXP_LIMIT_SIZE);
+		break;
+	case INDIRECT_CALIBRATION:
+		offset = iwl_eeprom_query16(priv, EEPROM_LINK_CALIBRATION);
+		break;
+	case INDIRECT_PROCESS_ADJST:
+		offset = iwl_eeprom_query16(priv, EEPROM_LINK_PROCESS_ADJST);
+		break;
+	case INDIRECT_OTHERS:
+		offset = iwl_eeprom_query16(priv, EEPROM_LINK_OTHERS);
+		break;
+	default:
+		IWL_ERR(priv, "illegal indirect type: 0x%X\n",
+		address & INDIRECT_TYPE_MSK);
+		break;
+	}
+
+	/* translate the offset from words to byte */
+	return (address & ADDRESS_MSK) + (offset << 1);
+}
+
+const u8 *iwl_eeprom_query_addr(struct iwl_priv *priv, size_t offset)
+{
+	u32 address = eeprom_indirect_address(priv, offset);
+	BUG_ON(address >= cfg(priv)->base_params->eeprom_size);
+	return &priv->eeprom[address];
+}
+
+void iwl_eeprom_get_mac(struct iwl_priv *priv, u8 *mac)
+{
+	const u8 *addr = iwl_eeprom_query_addr(priv,
 					EEPROM_MAC_ADDRESS);
 	memcpy(mac, addr, ETH_ALEN);
 }
@@ -591,7 +648,6 @@ iwl_eeprom_enh_txp_read_element(struct iwl_priv *priv,
 
 static void iwl_eeprom_enhanced_txpower(struct iwl_priv *priv)
 {
-	struct iwl_shared *shrd = priv->shrd;
 	struct iwl_eeprom_enhanced_txpwr *txp_array, *txp;
 	int idx, entries;
 	__le16 *txp_len;
@@ -600,10 +656,10 @@ static void iwl_eeprom_enhanced_txpower(struct iwl_priv *priv)
 	BUILD_BUG_ON(sizeof(struct iwl_eeprom_enhanced_txpwr) != 8);
 
 	/* the length is in 16-bit words, but we want entries */
-	txp_len = (__le16 *) iwl_eeprom_query_addr(shrd, EEPROM_TXP_SZ_OFFS);
+	txp_len = (__le16 *) iwl_eeprom_query_addr(priv, EEPROM_TXP_SZ_OFFS);
 	entries = le16_to_cpup(txp_len) * 2 / EEPROM_TXP_ENTRY_LEN;
 
-	txp_array = (void *) iwl_eeprom_query_addr(shrd, EEPROM_TXP_OFFS);
+	txp_array = (void *) iwl_eeprom_query_addr(priv, EEPROM_TXP_OFFS);
 
 	for (idx = 0; idx < entries; idx++) {
 		txp = &txp_array[idx];
@@ -656,66 +712,66 @@ static void iwl_eeprom_enhanced_txpower(struct iwl_priv *priv)
 /**
  * iwl_eeprom_init - read EEPROM contents
  *
- * Load the EEPROM contents from adapter into shrd->eeprom
+ * Load the EEPROM contents from adapter into priv->eeprom
  *
  * NOTE:  This routine uses the non-debug IO access functions.
  */
-int iwl_eeprom_init(struct iwl_trans *trans, u32 hw_rev)
+int iwl_eeprom_init(struct iwl_priv *priv, u32 hw_rev)
 {
 	__le16 *e;
-	u32 gp = iwl_read32(trans, CSR_EEPROM_GP);
+	u32 gp = iwl_read32(trans(priv), CSR_EEPROM_GP);
 	int sz;
 	int ret;
 	u16 addr;
 	u16 validblockaddr = 0;
 	u16 cache_addr = 0;
 
-	trans->nvm_device_type = iwl_get_nvm_type(trans, hw_rev);
-	if (trans->nvm_device_type == -ENOENT)
+	priv->nvm_device_type = iwl_get_nvm_type(trans(priv), hw_rev);
+	if (priv->nvm_device_type == -ENOENT)
 		return -ENOENT;
 	/* allocate eeprom */
-	sz = cfg(trans)->base_params->eeprom_size;
-	IWL_DEBUG_EEPROM(trans, "NVM size = %d\n", sz);
-	trans->shrd->eeprom = kzalloc(sz, GFP_KERNEL);
-	if (!trans->shrd->eeprom) {
+	sz = cfg(priv)->base_params->eeprom_size;
+	IWL_DEBUG_EEPROM(priv, "NVM size = %d\n", sz);
+	priv->eeprom = kzalloc(sz, GFP_KERNEL);
+	if (!priv->eeprom) {
 		ret = -ENOMEM;
 		goto alloc_err;
 	}
-	e = (__le16 *)trans->shrd->eeprom;
+	e = (__le16 *)priv->eeprom;
 
-	ret = iwl_eeprom_verify_signature(trans);
+	ret = iwl_eeprom_verify_signature(priv);
 	if (ret < 0) {
-		IWL_ERR(trans, "EEPROM not found, EEPROM_GP=0x%08x\n", gp);
+		IWL_ERR(priv, "EEPROM not found, EEPROM_GP=0x%08x\n", gp);
 		ret = -ENOENT;
 		goto err;
 	}
 
 	/* Make sure driver (instead of uCode) is allowed to read EEPROM */
-	ret = iwl_eeprom_acquire_semaphore(trans);
+	ret = iwl_eeprom_acquire_semaphore(trans(priv));
 	if (ret < 0) {
-		IWL_ERR(trans, "Failed to acquire EEPROM semaphore.\n");
+		IWL_ERR(priv, "Failed to acquire EEPROM semaphore.\n");
 		ret = -ENOENT;
 		goto err;
 	}
 
-	if (trans->nvm_device_type == NVM_DEVICE_TYPE_OTP) {
+	if (priv->nvm_device_type == NVM_DEVICE_TYPE_OTP) {
 
-		ret = iwl_init_otp_access(trans);
+		ret = iwl_init_otp_access(trans(priv));
 		if (ret) {
-			IWL_ERR(trans, "Failed to initialize OTP access.\n");
+			IWL_ERR(priv, "Failed to initialize OTP access.\n");
 			ret = -ENOENT;
 			goto done;
 		}
-		iwl_write32(trans, CSR_EEPROM_GP,
-			    iwl_read32(trans, CSR_EEPROM_GP) &
+		iwl_write32(trans(priv), CSR_EEPROM_GP,
+			    iwl_read32(trans(priv), CSR_EEPROM_GP) &
 			    ~CSR_EEPROM_GP_IF_OWNER_MSK);
 
-		iwl_set_bit(trans, CSR_OTP_GP_REG,
+		iwl_set_bit(trans(priv), CSR_OTP_GP_REG,
 			     CSR_OTP_GP_REG_ECC_CORR_STATUS_MSK |
 			     CSR_OTP_GP_REG_ECC_UNCORR_STATUS_MSK);
 		/* traversing the linked list if no shadow ram supported */
-		if (!cfg(trans)->base_params->shadow_ram_support) {
-			if (iwl_find_otp_image(trans, &validblockaddr)) {
+		if (!cfg(priv)->base_params->shadow_ram_support) {
+			if (iwl_find_otp_image(trans(priv), &validblockaddr)) {
 				ret = -ENOENT;
 				goto done;
 			}
@@ -724,7 +780,8 @@ int iwl_eeprom_init(struct iwl_trans *trans, u32 hw_rev)
 		     addr += sizeof(u16)) {
 			__le16 eeprom_data;
 
-			ret = iwl_read_otp_word(trans, addr, &eeprom_data);
+			ret = iwl_read_otp_word(trans(priv), addr,
+						&eeprom_data);
 			if (ret)
 				goto done;
 			e[cache_addr / 2] = eeprom_data;
@@ -735,94 +792,93 @@ int iwl_eeprom_init(struct iwl_trans *trans, u32 hw_rev)
 		for (addr = 0; addr < sz; addr += sizeof(u16)) {
 			u32 r;
 
-			iwl_write32(trans, CSR_EEPROM_REG,
+			iwl_write32(trans(priv), CSR_EEPROM_REG,
 				    CSR_EEPROM_REG_MSK_ADDR & (addr << 1));
 
-			ret = iwl_poll_bit(trans, CSR_EEPROM_REG,
+			ret = iwl_poll_bit(trans(priv), CSR_EEPROM_REG,
 						  CSR_EEPROM_REG_READ_VALID_MSK,
 						  CSR_EEPROM_REG_READ_VALID_MSK,
 						  IWL_EEPROM_ACCESS_TIMEOUT);
 			if (ret < 0) {
-				IWL_ERR(trans,
+				IWL_ERR(priv,
 					"Time out reading EEPROM[%d]\n", addr);
 				goto done;
 			}
-			r = iwl_read32(trans, CSR_EEPROM_REG);
+			r = iwl_read32(trans(priv), CSR_EEPROM_REG);
 			e[addr / 2] = cpu_to_le16(r >> 16);
 		}
 	}
 
-	IWL_DEBUG_EEPROM(trans, "NVM Type: %s, version: 0x%x\n",
-		       (trans->nvm_device_type == NVM_DEVICE_TYPE_OTP)
+	IWL_DEBUG_EEPROM(priv, "NVM Type: %s, version: 0x%x\n",
+		       (priv->nvm_device_type == NVM_DEVICE_TYPE_OTP)
 		       ? "OTP" : "EEPROM",
-		       iwl_eeprom_query16(trans->shrd, EEPROM_VERSION));
+		       iwl_eeprom_query16(priv, EEPROM_VERSION));
 
 	ret = 0;
 done:
-	iwl_eeprom_release_semaphore(trans);
+	iwl_eeprom_release_semaphore(trans(priv));
 
 err:
 	if (ret)
-		iwl_eeprom_free(trans->shrd);
+		iwl_eeprom_free(priv);
 alloc_err:
 	return ret;
 }
 
-void iwl_eeprom_free(struct iwl_shared *shrd)
+void iwl_eeprom_free(struct iwl_priv *priv)
 {
-	kfree(shrd->eeprom);
-	shrd->eeprom = NULL;
+	kfree(priv->eeprom);
+	priv->eeprom = NULL;
 }
 
-static void iwl_init_band_reference(const struct iwl_priv *priv,
+static void iwl_init_band_reference(struct iwl_priv *priv,
 			int eep_band, int *eeprom_ch_count,
 			const struct iwl_eeprom_channel **eeprom_ch_info,
 			const u8 **eeprom_ch_index)
 {
-	struct iwl_shared *shrd = priv->shrd;
 	u32 offset = cfg(priv)->lib->
 			eeprom_ops.regulatory_bands[eep_band - 1];
 	switch (eep_band) {
 	case 1:		/* 2.4GHz band */
 		*eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_1);
 		*eeprom_ch_info = (struct iwl_eeprom_channel *)
-				iwl_eeprom_query_addr(shrd, offset);
+				iwl_eeprom_query_addr(priv, offset);
 		*eeprom_ch_index = iwl_eeprom_band_1;
 		break;
 	case 2:		/* 4.9GHz band */
 		*eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_2);
 		*eeprom_ch_info = (struct iwl_eeprom_channel *)
-				iwl_eeprom_query_addr(shrd, offset);
+				iwl_eeprom_query_addr(priv, offset);
 		*eeprom_ch_index = iwl_eeprom_band_2;
 		break;
 	case 3:		/* 5.2GHz band */
 		*eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_3);
 		*eeprom_ch_info = (struct iwl_eeprom_channel *)
-				iwl_eeprom_query_addr(shrd, offset);
+				iwl_eeprom_query_addr(priv, offset);
 		*eeprom_ch_index = iwl_eeprom_band_3;
 		break;
 	case 4:		/* 5.5GHz band */
 		*eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_4);
 		*eeprom_ch_info = (struct iwl_eeprom_channel *)
-				iwl_eeprom_query_addr(shrd, offset);
+				iwl_eeprom_query_addr(priv, offset);
 		*eeprom_ch_index = iwl_eeprom_band_4;
 		break;
 	case 5:		/* 5.7GHz band */
 		*eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_5);
 		*eeprom_ch_info = (struct iwl_eeprom_channel *)
-				iwl_eeprom_query_addr(shrd, offset);
+				iwl_eeprom_query_addr(priv, offset);
 		*eeprom_ch_index = iwl_eeprom_band_5;
 		break;
 	case 6:		/* 2.4GHz ht40 channels */
 		*eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_6);
 		*eeprom_ch_info = (struct iwl_eeprom_channel *)
-				iwl_eeprom_query_addr(shrd, offset);
+				iwl_eeprom_query_addr(priv, offset);
 		*eeprom_ch_index = iwl_eeprom_band_6;
 		break;
 	case 7:		/* 5 GHz ht40 channels */
 		*eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_7);
 		*eeprom_ch_info = (struct iwl_eeprom_channel *)
-				iwl_eeprom_query_addr(shrd, offset);
+				iwl_eeprom_query_addr(priv, offset);
 		*eeprom_ch_index = iwl_eeprom_band_7;
 		break;
 	default:
@@ -1072,7 +1128,7 @@ void iwl_rf_config(struct iwl_priv *priv)
 {
 	u16 radio_cfg;
 
-	radio_cfg = iwl_eeprom_query16(priv->shrd, EEPROM_RADIO_CONFIG);
+	radio_cfg = iwl_eeprom_query16(priv, EEPROM_RADIO_CONFIG);
 
 	/* write radio config values to register */
 	if (EEPROM_RF_CFG_TYPE_MSK(radio_cfg) <= EEPROM_RF_CONFIG_TYPE_MAX) {