diff options
Diffstat (limited to 'drivers/net/wireless/iwlwifi')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-agn.c | 6 | ||||
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-csr.h | 5 | ||||
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-debug.h | 2 | ||||
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-debugfs.c | 18 | ||||
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-dev.h | 6 | ||||
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-eeprom.c | 147 | ||||
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-eeprom.h | 4 |
7 files changed, 161 insertions, 27 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn.c b/drivers/net/wireless/iwlwifi/iwl-agn.c index eb89752aff73..fd3673448d7a 100644 --- a/drivers/net/wireless/iwlwifi/iwl-agn.c +++ b/drivers/net/wireless/iwlwifi/iwl-agn.c @@ -2298,8 +2298,10 @@ static ssize_t show_version(struct device *d, if (priv->eeprom) { eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION); - pos += sprintf(buf + pos, "EEPROM version: 0x%x\n", - eeprom_ver); + pos += sprintf(buf + pos, "NVM Type: %s, version: 0x%x\n", + (priv->nvm_device_type == NVM_DEVICE_TYPE_OTP) + ? "OTP" : "EEPROM", eeprom_ver); + } else { pos += sprintf(buf + pos, "EEPROM not initialzed\n"); } diff --git a/drivers/net/wireless/iwlwifi/iwl-csr.h b/drivers/net/wireless/iwlwifi/iwl-csr.h index 6e983149b83b..3d50ef99f88d 100644 --- a/drivers/net/wireless/iwlwifi/iwl-csr.h +++ b/drivers/net/wireless/iwlwifi/iwl-csr.h @@ -89,6 +89,7 @@ /* EEPROM reads */ #define CSR_EEPROM_REG (CSR_BASE+0x02c) #define CSR_EEPROM_GP (CSR_BASE+0x030) +#define CSR_OTP_GP_REG (CSR_BASE+0x034) #define CSR_GIO_REG (CSR_BASE+0x03C) #define CSR_GP_UCODE (CSR_BASE+0x044) #define CSR_UCODE_DRV_GP1 (CSR_BASE+0x054) @@ -226,6 +227,10 @@ #define CSR_EEPROM_GP_VALID_MSK (0x00000007) #define CSR_EEPROM_GP_BAD_SIGNATURE (0x00000000) #define CSR_EEPROM_GP_IF_OWNER_MSK (0x00000180) +#define CSR_OTP_GP_REG_DEVICE_SELECT (0x00010000) /* 0 - EEPROM, 1 - OTP */ +#define CSR_OTP_GP_REG_OTP_ACCESS_MODE (0x00020000) /* 0 - absolute, 1 - relative */ +#define CSR_OTP_GP_REG_ECC_CORR_STATUS_MSK (0x00100000) /* bit 20 */ +#define CSR_OTP_GP_REG_ECC_UNCORR_STATUS_MSK (0x00200000) /* bit 21 */ /* CSR GIO */ #define CSR_GIO_REG_VAL_L0S_ENABLED (0x00000002) diff --git a/drivers/net/wireless/iwlwifi/iwl-debug.h b/drivers/net/wireless/iwlwifi/iwl-debug.h index db069801bc41..2cf014f523be 100644 --- a/drivers/net/wireless/iwlwifi/iwl-debug.h +++ b/drivers/net/wireless/iwlwifi/iwl-debug.h @@ -68,7 +68,7 @@ struct iwl_debugfs { struct dentry *dir_rf; struct dir_data_files { struct dentry *file_sram; - struct dentry *file_eeprom; + struct dentry *file_nvm; struct dentry *file_stations; struct dentry *file_rx_statistics; struct dentry *file_tx_statistics; diff --git a/drivers/net/wireless/iwlwifi/iwl-debugfs.c b/drivers/net/wireless/iwlwifi/iwl-debugfs.c index ffc4be3842b2..713f9edd055d 100644 --- a/drivers/net/wireless/iwlwifi/iwl-debugfs.c +++ b/drivers/net/wireless/iwlwifi/iwl-debugfs.c @@ -292,7 +292,7 @@ static ssize_t iwl_dbgfs_stations_read(struct file *file, char __user *user_buf, return ret; } -static ssize_t iwl_dbgfs_eeprom_read(struct file *file, +static ssize_t iwl_dbgfs_nvm_read(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) @@ -306,7 +306,7 @@ static ssize_t iwl_dbgfs_eeprom_read(struct file *file, buf_size = 4 * eeprom_len + 256; if (eeprom_len % 16) { - IWL_ERR(priv, "EEPROM size is not multiple of 16.\n"); + IWL_ERR(priv, "NVM size is not multiple of 16.\n"); return -ENODATA; } @@ -318,6 +318,13 @@ static ssize_t iwl_dbgfs_eeprom_read(struct file *file, } ptr = priv->eeprom; + if (!ptr) { + IWL_ERR(priv, "Invalid EEPROM/OTP memory\n"); + return -ENOMEM; + } + pos += scnprintf(buf + pos, buf_size - pos, "NVM Type: %s\n", + (priv->nvm_device_type == NVM_DEVICE_TYPE_OTP) + ? "OTP" : "EEPROM"); for (ofs = 0 ; ofs < eeprom_len ; ofs += 16) { pos += scnprintf(buf + pos, buf_size - pos, "0x%.4x ", ofs); hex_dump_to_buffer(ptr + ofs, 16 , 16, 2, buf + pos, @@ -419,7 +426,6 @@ static ssize_t iwl_dbgfs_channels_read(struct file *file, char __user *user_buf, channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN ? "passive only" : "active/passive"); - ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos); kfree(buf); return ret; @@ -564,7 +570,7 @@ static ssize_t iwl_dbgfs_interrupt_write(struct file *file, DEBUGFS_READ_WRITE_FILE_OPS(sram); DEBUGFS_WRITE_FILE_OPS(log_event); -DEBUGFS_READ_FILE_OPS(eeprom); +DEBUGFS_READ_FILE_OPS(nvm); DEBUGFS_READ_FILE_OPS(stations); DEBUGFS_READ_FILE_OPS(rx_statistics); DEBUGFS_READ_FILE_OPS(tx_statistics); @@ -598,7 +604,7 @@ int iwl_dbgfs_register(struct iwl_priv *priv, const char *name) DEBUGFS_ADD_DIR(data, dbgfs->dir_drv); DEBUGFS_ADD_DIR(rf, dbgfs->dir_drv); - DEBUGFS_ADD_FILE(eeprom, data); + DEBUGFS_ADD_FILE(nvm, data); DEBUGFS_ADD_FILE(sram, data); DEBUGFS_ADD_FILE(log_event, data); DEBUGFS_ADD_FILE(stations, data); @@ -629,7 +635,7 @@ void iwl_dbgfs_unregister(struct iwl_priv *priv) if (!priv->dbgfs) return; - DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_eeprom); + DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_nvm); DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_rx_statistics); DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_tx_statistics); DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_sram); diff --git a/drivers/net/wireless/iwlwifi/iwl-dev.h b/drivers/net/wireless/iwlwifi/iwl-dev.h index b6b8327a99fe..8282def00832 100644 --- a/drivers/net/wireless/iwlwifi/iwl-dev.h +++ b/drivers/net/wireless/iwlwifi/iwl-dev.h @@ -814,6 +814,11 @@ enum { MEASUREMENT_ACTIVE = (1 << 1), }; +enum iwl_nvm_type { + NVM_DEVICE_TYPE_EEPROM = 0, + NVM_DEVICE_TYPE_OTP, +}; + /* interrupt statistics */ struct isr_statistics { u32 hw; @@ -1024,6 +1029,7 @@ struct iwl_priv { /* eeprom */ u8 *eeprom; + int nvm_device_type; struct iwl_eeprom_calib_info *calib_info; enum nl80211_iftype iw_mode; diff --git a/drivers/net/wireless/iwlwifi/iwl-eeprom.c b/drivers/net/wireless/iwlwifi/iwl-eeprom.c index b400bd510fc5..9cc063b8b2d6 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 +224,35 @@ 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 { + ret = iwl_grab_nic_access(priv); + if (!ret) { + 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); + iwl_release_nic_access(priv); + } + } + return ret; +} + /** * iwl_eeprom_init - read EEPROM contents * @@ -209,11 +264,18 @@ 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 +297,77 @@ 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; } @@ -301,6 +410,8 @@ 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); diff --git a/drivers/net/wireless/iwlwifi/iwl-eeprom.h b/drivers/net/wireless/iwlwifi/iwl-eeprom.h index 3479153d96ca..195b4ef12c27 100644 --- a/drivers/net/wireless/iwlwifi/iwl-eeprom.h +++ b/drivers/net/wireless/iwlwifi/iwl-eeprom.h @@ -179,6 +179,10 @@ struct iwl_eeprom_channel { #define EEPROM_5050_TX_POWER_VERSION (4) #define EEPROM_5050_EEPROM_VERSION (0x21E) +/* OTP */ +#define OTP_LOWER_BLOCKS_TOTAL (3) +#define OTP_BLOCK_SIZE (0x400) + /* 2.4 GHz */ extern const u8 iwl_eeprom_band_1[14]; |