1 files changed, 520 insertions, 0 deletions

diff --git a/drivers/net/wireless/iwlwifi/dvm/ucode.c b/drivers/net/wireless/iwlwifi/dvm/ucode.c
new file mode 100644
index 000000000000..b3a314ba48c7
--- /dev/null
+++ b/drivers/net/wireless/iwlwifi/dvm/ucode.c
@@ -0,0 +1,520 @@
+/******************************************************************************
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2008 - 2012 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
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
+ * USA
+ *
+ * The full GNU General Public License is included in this distribution
+ * in the file called LICENSE.GPL.
+ *
+ * Contact Information:
+ *  Intel Linux Wireless <ilw@linux.intel.com>
+ * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
+ *
+ *****************************************************************************/
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+
+#include "iwl-io.h"
+#include "iwl-agn-hw.h"
+#include "iwl-trans.h"
+#include "iwl-fh.h"
+#include "iwl-op-mode.h"
+
+#include "dev.h"
+#include "agn.h"
+#include "calib.h"
+
+/******************************************************************************
+ *
+ * uCode download functions
+ *
+ ******************************************************************************/
+
+static inline const struct fw_img *
+iwl_get_ucode_image(struct iwl_priv *priv, enum iwl_ucode_type ucode_type)
+{
+        if (ucode_type >= IWL_UCODE_TYPE_MAX)
+                return NULL;
+
+        return &priv->fw->img[ucode_type];
+}
+
+/*
+ *  Calibration
+ */
+static int iwl_set_Xtal_calib(struct iwl_priv *priv)
+{
+        struct iwl_calib_xtal_freq_cmd cmd;
+        __le16 *xtal_calib = priv->eeprom_data->xtal_calib;
+
+        iwl_set_calib_hdr(&cmd.hdr, IWL_PHY_CALIBRATE_CRYSTAL_FRQ_CMD);
+        cmd.cap_pin1 = le16_to_cpu(xtal_calib[0]);
+        cmd.cap_pin2 = le16_to_cpu(xtal_calib[1]);
+        return iwl_calib_set(priv, (void *)&cmd, sizeof(cmd));
+}
+
+static int iwl_set_temperature_offset_calib(struct iwl_priv *priv)
+{
+        struct iwl_calib_temperature_offset_cmd cmd;
+
+        memset(&cmd, 0, sizeof(cmd));
+        iwl_set_calib_hdr(&cmd.hdr, IWL_PHY_CALIBRATE_TEMP_OFFSET_CMD);
+        cmd.radio_sensor_offset = priv->eeprom_data->raw_temperature;
+        if (!(cmd.radio_sensor_offset))
+                cmd.radio_sensor_offset = DEFAULT_RADIO_SENSOR_OFFSET;
+
+        IWL_DEBUG_CALIB(priv, "Radio sensor offset: %d\n",
+                        le16_to_cpu(cmd.radio_sensor_offset));
+        return iwl_calib_set(priv, (void *)&cmd, sizeof(cmd));
+}
+
+static int iwl_set_temperature_offset_calib_v2(struct iwl_priv *priv)
+{
+        struct iwl_calib_temperature_offset_v2_cmd cmd;
+
+        memset(&cmd, 0, sizeof(cmd));
+        iwl_set_calib_hdr(&cmd.hdr, IWL_PHY_CALIBRATE_TEMP_OFFSET_CMD);
+        cmd.radio_sensor_offset_high = priv->eeprom_data->kelvin_temperature;
+        cmd.radio_sensor_offset_low = priv->eeprom_data->raw_temperature;
+        if (!cmd.radio_sensor_offset_low) {
+                IWL_DEBUG_CALIB(priv, "no info in EEPROM, use default\n");
+                cmd.radio_sensor_offset_low = DEFAULT_RADIO_SENSOR_OFFSET;
+                cmd.radio_sensor_offset_high = DEFAULT_RADIO_SENSOR_OFFSET;
+        }
+        cmd.burntVoltageRef = priv->eeprom_data->calib_voltage;
+
+        IWL_DEBUG_CALIB(priv, "Radio sensor offset high: %d\n",
+                        le16_to_cpu(cmd.radio_sensor_offset_high));
+        IWL_DEBUG_CALIB(priv, "Radio sensor offset low: %d\n",
+                        le16_to_cpu(cmd.radio_sensor_offset_low));
+        IWL_DEBUG_CALIB(priv, "Voltage Ref: %d\n",
+                        le16_to_cpu(cmd.burntVoltageRef));
+
+        return iwl_calib_set(priv, (void *)&cmd, sizeof(cmd));
+}
+
+static int iwl_send_calib_cfg(struct iwl_priv *priv)
+{
+        struct iwl_calib_cfg_cmd calib_cfg_cmd;
+        struct iwl_host_cmd cmd = {
+                .id = CALIBRATION_CFG_CMD,
+                .len = { sizeof(struct iwl_calib_cfg_cmd), },
+                .data = { &calib_cfg_cmd, },
+        };
+
+        memset(&calib_cfg_cmd, 0, sizeof(calib_cfg_cmd));
+        calib_cfg_cmd.ucd_calib_cfg.once.is_enable = IWL_CALIB_INIT_CFG_ALL;
+        calib_cfg_cmd.ucd_calib_cfg.once.start = IWL_CALIB_INIT_CFG_ALL;
+        calib_cfg_cmd.ucd_calib_cfg.once.send_res = IWL_CALIB_INIT_CFG_ALL;
+        calib_cfg_cmd.ucd_calib_cfg.flags =
+                IWL_CALIB_CFG_FLAG_SEND_COMPLETE_NTFY_MSK;
+
+        return iwl_dvm_send_cmd(priv, &cmd);
+}
+
+int iwl_init_alive_start(struct iwl_priv *priv)
+{
+        int ret;
+
+        if (priv->cfg->bt_params &&
+            priv->cfg->bt_params->advanced_bt_coexist) {
+                /*
+                 * Tell uCode we are ready to perform calibration
+                 * need to perform this before any calibration
+                 * no need to close the envlope since we are going
+                 * to load the runtime uCode later.
+                 */
+                ret = iwl_send_bt_env(priv, IWL_BT_COEX_ENV_OPEN,
+                        BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
+                if (ret)
+                        return ret;
+
+        }
+
+        ret = iwl_send_calib_cfg(priv);
+        if (ret)
+                return ret;
+
+        /**
+         * temperature offset calibration is only needed for runtime ucode,
+         * so prepare the value now.
+         */
+        if (priv->cfg->need_temp_offset_calib) {
+                if (priv->cfg->temp_offset_v2)
+                        return iwl_set_temperature_offset_calib_v2(priv);
+                else
+                        return iwl_set_temperature_offset_calib(priv);
+        }
+
+        return 0;
+}
+
+static int iwl_send_wimax_coex(struct iwl_priv *priv)
+{
+        struct iwl_wimax_coex_cmd coex_cmd;
+
+        /* coexistence is disabled */
+        memset(&coex_cmd, 0, sizeof(coex_cmd));
+
+        return iwl_dvm_send_cmd_pdu(priv,
+                                COEX_PRIORITY_TABLE_CMD, CMD_SYNC,
+                                sizeof(coex_cmd), &coex_cmd);
+}
+
+static const u8 iwl_bt_prio_tbl[BT_COEX_PRIO_TBL_EVT_MAX] = {
+        ((BT_COEX_PRIO_TBL_PRIO_BYPASS << IWL_BT_COEX_PRIO_TBL_PRIO_POS) |
+                (0 << IWL_BT_COEX_PRIO_TBL_SHARED_ANTENNA_POS)),
+        ((BT_COEX_PRIO_TBL_PRIO_BYPASS << IWL_BT_COEX_PRIO_TBL_PRIO_POS) |
+                (1 << IWL_BT_COEX_PRIO_TBL_SHARED_ANTENNA_POS)),
+        ((BT_COEX_PRIO_TBL_PRIO_LOW << IWL_BT_COEX_PRIO_TBL_PRIO_POS) |
+                (0 << IWL_BT_COEX_PRIO_TBL_SHARED_ANTENNA_POS)),
+        ((BT_COEX_PRIO_TBL_PRIO_LOW << IWL_BT_COEX_PRIO_TBL_PRIO_POS) |
+                (1 << IWL_BT_COEX_PRIO_TBL_SHARED_ANTENNA_POS)),
+        ((BT_COEX_PRIO_TBL_PRIO_HIGH << IWL_BT_COEX_PRIO_TBL_PRIO_POS) |
+                (0 << IWL_BT_COEX_PRIO_TBL_SHARED_ANTENNA_POS)),
+        ((BT_COEX_PRIO_TBL_PRIO_HIGH << IWL_BT_COEX_PRIO_TBL_PRIO_POS) |
+                (1 << IWL_BT_COEX_PRIO_TBL_SHARED_ANTENNA_POS)),
+        ((BT_COEX_PRIO_TBL_PRIO_BYPASS << IWL_BT_COEX_PRIO_TBL_PRIO_POS) |
+                (0 << IWL_BT_COEX_PRIO_TBL_SHARED_ANTENNA_POS)),
+        ((BT_COEX_PRIO_TBL_PRIO_COEX_OFF << IWL_BT_COEX_PRIO_TBL_PRIO_POS) |
+                (0 << IWL_BT_COEX_PRIO_TBL_SHARED_ANTENNA_POS)),
+        ((BT_COEX_PRIO_TBL_PRIO_COEX_ON << IWL_BT_COEX_PRIO_TBL_PRIO_POS) |
+                (0 << IWL_BT_COEX_PRIO_TBL_SHARED_ANTENNA_POS)),
+        0, 0, 0, 0, 0, 0, 0
+};
+
+void iwl_send_prio_tbl(struct iwl_priv *priv)
+{
+        struct iwl_bt_coex_prio_table_cmd prio_tbl_cmd;
+
+        memcpy(prio_tbl_cmd.prio_tbl, iwl_bt_prio_tbl,
+                sizeof(iwl_bt_prio_tbl));
+        if (iwl_dvm_send_cmd_pdu(priv,
+                                REPLY_BT_COEX_PRIO_TABLE, CMD_SYNC,
+                                sizeof(prio_tbl_cmd), &prio_tbl_cmd))
+                IWL_ERR(priv, "failed to send BT prio tbl command\n");
+}
+
+int iwl_send_bt_env(struct iwl_priv *priv, u8 action, u8 type)
+{
+        struct iwl_bt_coex_prot_env_cmd env_cmd;
+        int ret;
+
+        env_cmd.action = action;
+        env_cmd.type = type;
+        ret = iwl_dvm_send_cmd_pdu(priv,
+                               REPLY_BT_COEX_PROT_ENV, CMD_SYNC,
+                               sizeof(env_cmd), &env_cmd);
+        if (ret)
+                IWL_ERR(priv, "failed to send BT env command\n");
+        return ret;
+}
+
+
+static int iwl_alive_notify(struct iwl_priv *priv)
+{
+        int ret;
+
+        iwl_trans_fw_alive(priv->trans);
+
+        priv->passive_no_rx = false;
+        priv->transport_queue_stop = 0;
+
+        ret = iwl_send_wimax_coex(priv);
+        if (ret)
+                return ret;
+
+        if (!priv->cfg->no_xtal_calib) {
+                ret = iwl_set_Xtal_calib(priv);
+                if (ret)
+                        return ret;
+        }
+
+        return iwl_send_calib_results(priv);
+}
+
+
+/**
+ * iwl_verify_inst_sparse - verify runtime uCode image in card vs. host,
+ *   using sample data 100 bytes apart.  If these sample points are good,
+ *   it's a pretty good bet that everything between them is good, too.
+ */
+static int iwl_verify_sec_sparse(struct iwl_priv *priv,
+                                  const struct fw_desc *fw_desc)
+{
+        __le32 *image = (__le32 *)fw_desc->v_addr;
+        u32 len = fw_desc->len;
+        u32 val;
+        u32 i;
+
+        IWL_DEBUG_FW(priv, "ucode inst image size is %u\n", len);
+
+        for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
+                /* read data comes through single port, auto-incr addr */
+                /* NOTE: Use the debugless read so we don't flood kernel log
+                 * if IWL_DL_IO is set */
+                iwl_write_direct32(priv->trans, HBUS_TARG_MEM_RADDR,
+                        i + fw_desc->offset);
+                val = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT);
+                if (val != le32_to_cpu(*image))
+                        return -EIO;
+        }
+
+        return 0;
+}
+
+static void iwl_print_mismatch_sec(struct iwl_priv *priv,
+                                    const struct fw_desc *fw_desc)
+{
+        __le32 *image = (__le32 *)fw_desc->v_addr;
+        u32 len = fw_desc->len;
+        u32 val;
+        u32 offs;
+        int errors = 0;
+
+        IWL_DEBUG_FW(priv, "ucode inst image size is %u\n", len);
+
+        iwl_write_direct32(priv->trans, HBUS_TARG_MEM_RADDR,
+                                fw_desc->offset);
+
+        for (offs = 0;
+             offs < len && errors < 20;
+             offs += sizeof(u32), image++) {
+                /* read data comes through single port, auto-incr addr */
+                val = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT);
+                if (val != le32_to_cpu(*image)) {
+                        IWL_ERR(priv, "uCode INST section at "
+                                "offset 0x%x, is 0x%x, s/b 0x%x\n",
+                                offs, val, le32_to_cpu(*image));
+                        errors++;
+                }
+        }
+}
+
+/**
+ * iwl_verify_ucode - determine which instruction image is in SRAM,
+ *    and verify its contents
+ */
+static int iwl_verify_ucode(struct iwl_priv *priv,
+                            enum iwl_ucode_type ucode_type)
+{
+        const struct fw_img *img = iwl_get_ucode_image(priv, ucode_type);
+
+        if (!img) {
+                IWL_ERR(priv, "Invalid ucode requested (%d)\n", ucode_type);
+                return -EINVAL;
+        }
+
+        if (!iwl_verify_sec_sparse(priv, &img->sec[IWL_UCODE_SECTION_INST])) {
+                IWL_DEBUG_FW(priv, "uCode is good in inst SRAM\n");
+                return 0;
+        }
+
+        IWL_ERR(priv, "UCODE IMAGE IN INSTRUCTION SRAM NOT VALID!!\n");
+
+        iwl_print_mismatch_sec(priv, &img->sec[IWL_UCODE_SECTION_INST]);
+        return -EIO;
+}
+
+struct iwl_alive_data {
+        bool valid;
+        u8 subtype;
+};
+
+static bool iwl_alive_fn(struct iwl_notif_wait_data *notif_wait,
+                         struct iwl_rx_packet *pkt, void *data)
+{
+        struct iwl_priv *priv =
+                container_of(notif_wait, struct iwl_priv, notif_wait);
+        struct iwl_alive_data *alive_data = data;
+        struct iwl_alive_resp *palive;
+
+        palive = (void *)pkt->data;
+
+        IWL_DEBUG_FW(priv, "Alive ucode status 0x%08X revision "
+                       "0x%01X 0x%01X\n",
+                       palive->is_valid, palive->ver_type,
+                       palive->ver_subtype);
+
+        priv->device_pointers.error_event_table =
+                le32_to_cpu(palive->error_event_table_ptr);
+        priv->device_pointers.log_event_table =
+                le32_to_cpu(palive->log_event_table_ptr);
+
+        alive_data->subtype = palive->ver_subtype;
+        alive_data->valid = palive->is_valid == UCODE_VALID_OK;
+
+        return true;
+}
+
+#define UCODE_ALIVE_TIMEOUT     HZ
+#define UCODE_CALIB_TIMEOUT     (2*HZ)
+
+int iwl_load_ucode_wait_alive(struct iwl_priv *priv,
+                                 enum iwl_ucode_type ucode_type)
+{
+        struct iwl_notification_wait alive_wait;
+        struct iwl_alive_data alive_data;
+        const struct fw_img *fw;
+        int ret;
+        enum iwl_ucode_type old_type;
+        static const u8 alive_cmd[] = { REPLY_ALIVE };
+
+        old_type = priv->cur_ucode;
+        priv->cur_ucode = ucode_type;
+        fw = iwl_get_ucode_image(priv, ucode_type);
+
+        priv->ucode_loaded = false;
+
+        if (!fw)
+                return -EINVAL;
+
+        iwl_init_notification_wait(&priv->notif_wait, &alive_wait,
+                                   alive_cmd, ARRAY_SIZE(alive_cmd),
+                                   iwl_alive_fn, &alive_data);
+
+        ret = iwl_trans_start_fw(priv->trans, fw);
+        if (ret) {
+                priv->cur_ucode = old_type;
+                iwl_remove_notification(&priv->notif_wait, &alive_wait);
+                return ret;
+        }
+
+        /*
+         * Some things may run in the background now, but we
+         * just wait for the ALIVE notification here.
+         */
+        ret = iwl_wait_notification(&priv->notif_wait, &alive_wait,
+                                        UCODE_ALIVE_TIMEOUT);
+        if (ret) {
+                priv->cur_ucode = old_type;
+                return ret;
+        }
+
+        if (!alive_data.valid) {
+                IWL_ERR(priv, "Loaded ucode is not valid!\n");
+                priv->cur_ucode = old_type;
+                return -EIO;
+        }
+
+        /*
+         * This step takes a long time (60-80ms!!) and
+         * WoWLAN image should be loaded quickly, so
+         * skip it for WoWLAN.
+         */
+        if (ucode_type != IWL_UCODE_WOWLAN) {
+                ret = iwl_verify_ucode(priv, ucode_type);
+                if (ret) {
+                        priv->cur_ucode = old_type;
+                        return ret;
+                }
+
+                /* delay a bit to give rfkill time to run */
+                msleep(5);
+        }
+
+        ret = iwl_alive_notify(priv);
+        if (ret) {
+                IWL_WARN(priv,
+                        "Could not complete ALIVE transition: %d\n", ret);
+                priv->cur_ucode = old_type;
+                return ret;
+        }
+
+        priv->ucode_loaded = true;
+
+        return 0;
+}
+
+static bool iwlagn_wait_calib(struct iwl_notif_wait_data *notif_wait,
+                              struct iwl_rx_packet *pkt, void *data)
+{
+        struct iwl_priv *priv = data;
+        struct iwl_calib_hdr *hdr;
+        int len;
+
+        if (pkt->hdr.cmd != CALIBRATION_RES_NOTIFICATION) {
+                WARN_ON(pkt->hdr.cmd != CALIBRATION_COMPLETE_NOTIFICATION);
+                return true;
+        }
+
+        hdr = (struct iwl_calib_hdr *)pkt->data;
+        len = le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK;
+
+        /* reduce the size by the length field itself */
+        len -= sizeof(__le32);
+
+        if (iwl_calib_set(priv, hdr, len))
+                IWL_ERR(priv, "Failed to record calibration data %d\n",
+                        hdr->op_code);
+
+        return false;
+}
+
+int iwl_run_init_ucode(struct iwl_priv *priv)
+{
+        struct iwl_notification_wait calib_wait;
+        static const u8 calib_complete[] = {
+                CALIBRATION_RES_NOTIFICATION,
+                CALIBRATION_COMPLETE_NOTIFICATION
+        };
+        int ret;
+
+        lockdep_assert_held(&priv->mutex);
+
+        /* No init ucode required? Curious, but maybe ok */
+        if (!priv->fw->img[IWL_UCODE_INIT].sec[0].len)
+                return 0;
+
+        if (priv->init_ucode_run)
+                return 0;
+
+        iwl_init_notification_wait(&priv->notif_wait, &calib_wait,
+                                   calib_complete, ARRAY_SIZE(calib_complete),
+                                   iwlagn_wait_calib, priv);
+
+        /* Will also start the device */
+        ret = iwl_load_ucode_wait_alive(priv, IWL_UCODE_INIT);
+        if (ret)
+                goto error;
+
+        ret = iwl_init_alive_start(priv);
+        if (ret)
+                goto error;
+
+        /*
+         * Some things may run in the background now, but we
+         * just wait for the calibration complete notification.
+         */
+        ret = iwl_wait_notification(&priv->notif_wait, &calib_wait,
+                                        UCODE_CALIB_TIMEOUT);
+        if (!ret)
+                priv->init_ucode_run = true;
+
+        goto out;
+
+ error:
+        iwl_remove_notification(&priv->notif_wait, &calib_wait);
+ out:
+        /* Whatever happened, stop the device */
+        iwl_trans_stop_device(priv->trans);
+        priv->ucode_loaded = false;
+
+        return ret;
+}