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path: root/drivers/net/wireless/iwlwifi/iwl-eeprom.c
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Diffstat (limited to 'drivers/net/wireless/iwlwifi/iwl-eeprom.c')
-rw-r--r--drivers/net/wireless/iwlwifi/iwl-eeprom.c153
1 files changed, 130 insertions, 23 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-eeprom.c b/drivers/net/wireless/iwlwifi/iwl-eeprom.c
index 75517d05df08..7d7554a2f341 100644
--- a/drivers/net/wireless/iwlwifi/iwl-eeprom.c
+++ b/drivers/net/wireless/iwlwifi/iwl-eeprom.c
@@ -152,6 +152,32 @@ int iwlcore_eeprom_verify_signature(struct iwl_priv *priv)
}
EXPORT_SYMBOL(iwlcore_eeprom_verify_signature);
+static int iwlcore_get_nvm_type(struct iwl_priv *priv)
+{
+ u32 otpgp;
+ int nvm_type;
+
+ /* OTP only valid for CP/PP and after */
+ switch (priv->hw_rev & CSR_HW_REV_TYPE_MSK) {
+ case CSR_HW_REV_TYPE_3945:
+ case CSR_HW_REV_TYPE_4965:
+ case CSR_HW_REV_TYPE_5300:
+ case CSR_HW_REV_TYPE_5350:
+ case CSR_HW_REV_TYPE_5100:
+ case CSR_HW_REV_TYPE_5150:
+ nvm_type = NVM_DEVICE_TYPE_EEPROM;
+ break;
+ default:
+ otpgp = iwl_read32(priv, CSR_OTP_GP_REG);
+ if (otpgp & CSR_OTP_GP_REG_DEVICE_SELECT)
+ nvm_type = NVM_DEVICE_TYPE_OTP;
+ else
+ nvm_type = NVM_DEVICE_TYPE_EEPROM;
+ break;
+ }
+ return nvm_type;
+}
+
/*
* The device's EEPROM semaphore prevents conflicts between driver and uCode
* when accessing the EEPROM; each access is a series of pulses to/from the
@@ -198,6 +224,31 @@ const u8 *iwlcore_eeprom_query_addr(const struct iwl_priv *priv, size_t offset)
}
EXPORT_SYMBOL(iwlcore_eeprom_query_addr);
+static int iwl_init_otp_access(struct iwl_priv *priv)
+{
+ int ret;
+
+ /* Enable 40MHz radio clock */
+ _iwl_write32(priv, CSR_GP_CNTRL,
+ _iwl_read32(priv, CSR_GP_CNTRL) |
+ CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
+
+ /* wait for clock to be ready */
+ ret = iwl_poll_direct_bit(priv, CSR_GP_CNTRL,
+ CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
+ 25000);
+ if (ret < 0)
+ IWL_ERR(priv, "Time out access OTP\n");
+ else {
+ iwl_set_bits_prph(priv, APMG_PS_CTRL_REG,
+ APMG_PS_CTRL_VAL_RESET_REQ);
+ udelay(5);
+ iwl_clear_bits_prph(priv, APMG_PS_CTRL_REG,
+ APMG_PS_CTRL_VAL_RESET_REQ);
+ }
+ return ret;
+}
+
/**
* iwl_eeprom_init - read EEPROM contents
*
@@ -209,11 +260,18 @@ int iwl_eeprom_init(struct iwl_priv *priv)
{
u16 *e;
u32 gp = iwl_read32(priv, CSR_EEPROM_GP);
- int sz = priv->cfg->eeprom_size;
+ int sz;
int ret;
u16 addr;
+ u32 otpgp;
+
+ priv->nvm_device_type = iwlcore_get_nvm_type(priv);
/* allocate eeprom */
+ if (priv->nvm_device_type == NVM_DEVICE_TYPE_OTP)
+ priv->cfg->eeprom_size =
+ OTP_BLOCK_SIZE * OTP_LOWER_BLOCKS_TOTAL;
+ sz = priv->cfg->eeprom_size;
priv->eeprom = kzalloc(sz, GFP_KERNEL);
if (!priv->eeprom) {
ret = -ENOMEM;
@@ -235,30 +293,77 @@ int iwl_eeprom_init(struct iwl_priv *priv)
ret = -ENOENT;
goto err;
}
-
- /* eeprom is an array of 16bit values */
- for (addr = 0; addr < sz; addr += sizeof(u16)) {
- u32 r;
-
- _iwl_write32(priv, CSR_EEPROM_REG,
- CSR_EEPROM_REG_MSK_ADDR & (addr << 1));
-
- ret = iwl_poll_direct_bit(priv, CSR_EEPROM_REG,
- CSR_EEPROM_REG_READ_VALID_MSK,
- IWL_EEPROM_ACCESS_TIMEOUT);
- if (ret < 0) {
- IWL_ERR(priv, "Time out reading EEPROM[%d]\n", addr);
- goto done;
+ if (priv->nvm_device_type == NVM_DEVICE_TYPE_OTP) {
+ ret = iwl_init_otp_access(priv);
+ if (ret) {
+ IWL_ERR(priv, "Failed to initialize OTP access.\n");
+ ret = -ENOENT;
+ goto err;
+ }
+ _iwl_write32(priv, CSR_EEPROM_GP,
+ iwl_read32(priv, CSR_EEPROM_GP) &
+ ~CSR_EEPROM_GP_IF_OWNER_MSK);
+ /* clear */
+ _iwl_write32(priv, CSR_OTP_GP_REG,
+ iwl_read32(priv, CSR_OTP_GP_REG) |
+ CSR_OTP_GP_REG_ECC_CORR_STATUS_MSK |
+ CSR_OTP_GP_REG_ECC_UNCORR_STATUS_MSK);
+
+ for (addr = 0; addr < sz; addr += sizeof(u16)) {
+ u32 r;
+
+ _iwl_write32(priv, CSR_EEPROM_REG,
+ CSR_EEPROM_REG_MSK_ADDR & (addr << 1));
+
+ ret = iwl_poll_direct_bit(priv, CSR_EEPROM_REG,
+ CSR_EEPROM_REG_READ_VALID_MSK,
+ IWL_EEPROM_ACCESS_TIMEOUT);
+ if (ret < 0) {
+ IWL_ERR(priv, "Time out reading OTP[%d]\n", addr);
+ goto done;
+ }
+ r = _iwl_read_direct32(priv, CSR_EEPROM_REG);
+ /* check for ECC errors: */
+ otpgp = iwl_read32(priv, CSR_OTP_GP_REG);
+ if (otpgp & CSR_OTP_GP_REG_ECC_UNCORR_STATUS_MSK) {
+ /* stop in this case */
+ IWL_ERR(priv, "Uncorrectable OTP ECC error, Abort OTP read\n");
+ goto done;
+ }
+ if (otpgp & CSR_OTP_GP_REG_ECC_CORR_STATUS_MSK) {
+ /* continue in this case */
+ _iwl_write32(priv, CSR_OTP_GP_REG,
+ iwl_read32(priv, CSR_OTP_GP_REG) |
+ CSR_OTP_GP_REG_ECC_CORR_STATUS_MSK);
+ IWL_ERR(priv, "Correctable OTP ECC error, continue read\n");
+ }
+ e[addr / 2] = le16_to_cpu((__force __le16)(r >> 16));
+ }
+ } else {
+ /* eeprom is an array of 16bit values */
+ for (addr = 0; addr < sz; addr += sizeof(u16)) {
+ u32 r;
+
+ _iwl_write32(priv, CSR_EEPROM_REG,
+ CSR_EEPROM_REG_MSK_ADDR & (addr << 1));
+
+ ret = iwl_poll_direct_bit(priv, CSR_EEPROM_REG,
+ CSR_EEPROM_REG_READ_VALID_MSK,
+ IWL_EEPROM_ACCESS_TIMEOUT);
+ if (ret < 0) {
+ IWL_ERR(priv, "Time out reading EEPROM[%d]\n", addr);
+ goto done;
+ }
+ r = _iwl_read_direct32(priv, CSR_EEPROM_REG);
+ e[addr / 2] = le16_to_cpu((__force __le16)(r >> 16));
}
- r = _iwl_read_direct32(priv, CSR_EEPROM_REG);
- e[addr / 2] = le16_to_cpu((__force __le16)(r >> 16));
}
ret = 0;
done:
priv->cfg->ops->lib->eeprom_ops.release_semaphore(priv);
err:
if (ret)
- kfree(priv->eeprom);
+ iwl_eeprom_free(priv);
alloc_err:
return ret;
}
@@ -285,7 +390,7 @@ int iwl_eeprom_check_version(struct iwl_priv *priv)
return 0;
err:
- IWL_ERR(priv, "Unsupported EEPROM VER=0x%x < 0x%x CALIB=0x%x < 0x%x\n",
+ IWL_ERR(priv, "Unsupported (too old) EEPROM VER=0x%x < 0x%x CALIB=0x%x < 0x%x\n",
eeprom_ver, priv->cfg->eeprom_ver,
calib_ver, priv->cfg->eeprom_calib_ver);
return -EINVAL;
@@ -301,6 +406,8 @@ EXPORT_SYMBOL(iwl_eeprom_query_addr);
u16 iwl_eeprom_query16(const struct iwl_priv *priv, size_t offset)
{
+ if (!priv->eeprom)
+ return 0;
return (u16)priv->eeprom[offset] | ((u16)priv->eeprom[offset + 1] << 8);
}
EXPORT_SYMBOL(iwl_eeprom_query16);
@@ -481,8 +588,8 @@ int iwl_init_channel_map(struct iwl_priv *priv)
/* First write that fat is not enabled, and then enable
* one by one */
ch_info->fat_extension_channel =
- (IEEE80211_CHAN_NO_FAT_ABOVE |
- IEEE80211_CHAN_NO_FAT_BELOW);
+ (IEEE80211_CHAN_NO_HT40PLUS |
+ IEEE80211_CHAN_NO_HT40MINUS);
if (!(is_channel_valid(ch_info))) {
IWL_DEBUG_INFO(priv, "Ch. %d Flags %x [%sGHz] - "
@@ -561,7 +668,7 @@ int iwl_init_channel_map(struct iwl_priv *priv)
fat_extension_chan = 0;
else
fat_extension_chan =
- IEEE80211_CHAN_NO_FAT_BELOW;
+ IEEE80211_CHAN_NO_HT40MINUS;
/* Set up driver's info for lower half */
iwl_set_fat_chan_info(priv, ieeeband,
@@ -573,7 +680,7 @@ int iwl_init_channel_map(struct iwl_priv *priv)
iwl_set_fat_chan_info(priv, ieeeband,
(eeprom_ch_index[ch] + 4),
&(eeprom_ch_info[ch]),
- IEEE80211_CHAN_NO_FAT_ABOVE);
+ IEEE80211_CHAN_NO_HT40PLUS);
}
}
generated by cgit v1.2.3-55-g7522 (git 2.39.0) at 2024-06-11 21:54:44 +0200