diff options
Diffstat (limited to 'drivers/net/wireless/iwlwifi/iwl-agn-ucode.c')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-agn-ucode.c | 425 |
1 files changed, 425 insertions, 0 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-ucode.c b/drivers/net/wireless/iwlwifi/iwl-agn-ucode.c new file mode 100644 index 0000000..637286c --- /dev/null +++ b/drivers/net/wireless/iwlwifi/iwl-agn-ucode.c @@ -0,0 +1,425 @@ +/****************************************************************************** + * + * GPL LICENSE SUMMARY + * + * Copyright(c) 2008 - 2010 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/module.h> +#include <linux/init.h> +#include <linux/sched.h> + +#include "iwl-dev.h" +#include "iwl-core.h" +#include "iwl-io.h" +#include "iwl-helpers.h" +#include "iwl-agn-hw.h" +#include "iwl-agn.h" + +static const s8 iwlagn_default_queue_to_tx_fifo[] = { + IWL_TX_FIFO_VO, + IWL_TX_FIFO_VI, + IWL_TX_FIFO_BE, + IWL_TX_FIFO_BK, + IWLAGN_CMD_FIFO_NUM, + IWL_TX_FIFO_UNUSED, + IWL_TX_FIFO_UNUSED, + IWL_TX_FIFO_UNUSED, + IWL_TX_FIFO_UNUSED, + IWL_TX_FIFO_UNUSED, +}; + +static struct iwl_wimax_coex_event_entry cu_priorities[COEX_NUM_OF_EVENTS] = { + {COEX_CU_UNASSOC_IDLE_RP, COEX_CU_UNASSOC_IDLE_WP, + 0, COEX_UNASSOC_IDLE_FLAGS}, + {COEX_CU_UNASSOC_MANUAL_SCAN_RP, COEX_CU_UNASSOC_MANUAL_SCAN_WP, + 0, COEX_UNASSOC_MANUAL_SCAN_FLAGS}, + {COEX_CU_UNASSOC_AUTO_SCAN_RP, COEX_CU_UNASSOC_AUTO_SCAN_WP, + 0, COEX_UNASSOC_AUTO_SCAN_FLAGS}, + {COEX_CU_CALIBRATION_RP, COEX_CU_CALIBRATION_WP, + 0, COEX_CALIBRATION_FLAGS}, + {COEX_CU_PERIODIC_CALIBRATION_RP, COEX_CU_PERIODIC_CALIBRATION_WP, + 0, COEX_PERIODIC_CALIBRATION_FLAGS}, + {COEX_CU_CONNECTION_ESTAB_RP, COEX_CU_CONNECTION_ESTAB_WP, + 0, COEX_CONNECTION_ESTAB_FLAGS}, + {COEX_CU_ASSOCIATED_IDLE_RP, COEX_CU_ASSOCIATED_IDLE_WP, + 0, COEX_ASSOCIATED_IDLE_FLAGS}, + {COEX_CU_ASSOC_MANUAL_SCAN_RP, COEX_CU_ASSOC_MANUAL_SCAN_WP, + 0, COEX_ASSOC_MANUAL_SCAN_FLAGS}, + {COEX_CU_ASSOC_AUTO_SCAN_RP, COEX_CU_ASSOC_AUTO_SCAN_WP, + 0, COEX_ASSOC_AUTO_SCAN_FLAGS}, + {COEX_CU_ASSOC_ACTIVE_LEVEL_RP, COEX_CU_ASSOC_ACTIVE_LEVEL_WP, + 0, COEX_ASSOC_ACTIVE_LEVEL_FLAGS}, + {COEX_CU_RF_ON_RP, COEX_CU_RF_ON_WP, 0, COEX_CU_RF_ON_FLAGS}, + {COEX_CU_RF_OFF_RP, COEX_CU_RF_OFF_WP, 0, COEX_RF_OFF_FLAGS}, + {COEX_CU_STAND_ALONE_DEBUG_RP, COEX_CU_STAND_ALONE_DEBUG_WP, + 0, COEX_STAND_ALONE_DEBUG_FLAGS}, + {COEX_CU_IPAN_ASSOC_LEVEL_RP, COEX_CU_IPAN_ASSOC_LEVEL_WP, + 0, COEX_IPAN_ASSOC_LEVEL_FLAGS}, + {COEX_CU_RSRVD1_RP, COEX_CU_RSRVD1_WP, 0, COEX_RSRVD1_FLAGS}, + {COEX_CU_RSRVD2_RP, COEX_CU_RSRVD2_WP, 0, COEX_RSRVD2_FLAGS} +}; + +/* + * ucode + */ +static int iwlagn_load_section(struct iwl_priv *priv, const char *name, + struct fw_desc *image, u32 dst_addr) +{ + dma_addr_t phy_addr = image->p_addr; + u32 byte_cnt = image->len; + int ret; + + priv->ucode_write_complete = 0; + + iwl_write_direct32(priv, + FH_TCSR_CHNL_TX_CONFIG_REG(FH_SRVC_CHNL), + FH_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_PAUSE); + + iwl_write_direct32(priv, + FH_SRVC_CHNL_SRAM_ADDR_REG(FH_SRVC_CHNL), dst_addr); + + iwl_write_direct32(priv, + FH_TFDIB_CTRL0_REG(FH_SRVC_CHNL), + phy_addr & FH_MEM_TFDIB_DRAM_ADDR_LSB_MSK); + + iwl_write_direct32(priv, + FH_TFDIB_CTRL1_REG(FH_SRVC_CHNL), + (iwl_get_dma_hi_addr(phy_addr) + << FH_MEM_TFDIB_REG1_ADDR_BITSHIFT) | byte_cnt); + + iwl_write_direct32(priv, + FH_TCSR_CHNL_TX_BUF_STS_REG(FH_SRVC_CHNL), + 1 << FH_TCSR_CHNL_TX_BUF_STS_REG_POS_TB_NUM | + 1 << FH_TCSR_CHNL_TX_BUF_STS_REG_POS_TB_IDX | + FH_TCSR_CHNL_TX_BUF_STS_REG_VAL_TFDB_VALID); + + iwl_write_direct32(priv, + FH_TCSR_CHNL_TX_CONFIG_REG(FH_SRVC_CHNL), + FH_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_ENABLE | + FH_TCSR_TX_CONFIG_REG_VAL_DMA_CREDIT_DISABLE | + FH_TCSR_TX_CONFIG_REG_VAL_CIRQ_HOST_ENDTFD); + + IWL_DEBUG_INFO(priv, "%s uCode section being loaded...\n", name); + ret = wait_event_interruptible_timeout(priv->wait_command_queue, + priv->ucode_write_complete, 5 * HZ); + if (ret == -ERESTARTSYS) { + IWL_ERR(priv, "Could not load the %s uCode section due " + "to interrupt\n", name); + return ret; + } + if (!ret) { + IWL_ERR(priv, "Could not load the %s uCode section\n", + name); + return -ETIMEDOUT; + } + + return 0; +} + +static int iwlagn_load_given_ucode(struct iwl_priv *priv, + struct fw_desc *inst_image, + struct fw_desc *data_image) +{ + int ret = 0; + + ret = iwlagn_load_section(priv, "INST", inst_image, + IWLAGN_RTC_INST_LOWER_BOUND); + if (ret) + return ret; + + return iwlagn_load_section(priv, "DATA", data_image, + IWLAGN_RTC_DATA_LOWER_BOUND); +} + +int iwlagn_load_ucode(struct iwl_priv *priv) +{ + int ret = 0; + + /* check whether init ucode should be loaded, or rather runtime ucode */ + if (priv->ucode_init.len && (priv->ucode_type == UCODE_NONE)) { + IWL_DEBUG_INFO(priv, "Init ucode found. Loading init ucode...\n"); + ret = iwlagn_load_given_ucode(priv, + &priv->ucode_init, &priv->ucode_init_data); + if (!ret) { + IWL_DEBUG_INFO(priv, "Init ucode load complete.\n"); + priv->ucode_type = UCODE_INIT; + } + } else { + IWL_DEBUG_INFO(priv, "Init ucode not found, or already loaded. " + "Loading runtime ucode...\n"); + ret = iwlagn_load_given_ucode(priv, + &priv->ucode_code, &priv->ucode_data); + if (!ret) { + IWL_DEBUG_INFO(priv, "Runtime ucode load complete.\n"); + priv->ucode_type = UCODE_RT; + } + } + + return ret; +} + +/* + * Calibration + */ +static int iwlagn_set_Xtal_calib(struct iwl_priv *priv) +{ + struct iwl_calib_xtal_freq_cmd cmd; + __le16 *xtal_calib = + (__le16 *)iwl_eeprom_query_addr(priv, EEPROM_XTAL); + + cmd.hdr.op_code = IWL_PHY_CALIBRATE_CRYSTAL_FRQ_CMD; + cmd.hdr.first_group = 0; + cmd.hdr.groups_num = 1; + cmd.hdr.data_valid = 1; + cmd.cap_pin1 = le16_to_cpu(xtal_calib[0]); + cmd.cap_pin2 = le16_to_cpu(xtal_calib[1]); + return iwl_calib_set(&priv->calib_results[IWL_CALIB_XTAL], + (u8 *)&cmd, sizeof(cmd)); +} + +static int iwlagn_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_INIT_CFG_ALL; + + return iwl_send_cmd(priv, &cmd); +} + +void iwlagn_rx_calib_result(struct iwl_priv *priv, + struct iwl_rx_mem_buffer *rxb) +{ + struct iwl_rx_packet *pkt = rxb_addr(rxb); + struct iwl_calib_hdr *hdr = (struct iwl_calib_hdr *)pkt->u.raw; + int len = le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK; + int index; + + /* reduce the size of the length field itself */ + len -= 4; + + /* Define the order in which the results will be sent to the runtime + * uCode. iwl_send_calib_results sends them in a row according to + * their index. We sort them here + */ + switch (hdr->op_code) { + case IWL_PHY_CALIBRATE_DC_CMD: + index = IWL_CALIB_DC; + break; + case IWL_PHY_CALIBRATE_LO_CMD: + index = IWL_CALIB_LO; + break; + case IWL_PHY_CALIBRATE_TX_IQ_CMD: + index = IWL_CALIB_TX_IQ; + break; + case IWL_PHY_CALIBRATE_TX_IQ_PERD_CMD: + index = IWL_CALIB_TX_IQ_PERD; + break; + case IWL_PHY_CALIBRATE_BASE_BAND_CMD: + index = IWL_CALIB_BASE_BAND; + break; + default: + IWL_ERR(priv, "Unknown calibration notification %d\n", + hdr->op_code); + return; + } + iwl_calib_set(&priv->calib_results[index], pkt->u.raw, len); +} + +void iwlagn_rx_calib_complete(struct iwl_priv *priv, + struct iwl_rx_mem_buffer *rxb) +{ + IWL_DEBUG_INFO(priv, "Init. calibration is completed, restarting fw.\n"); + queue_work(priv->workqueue, &priv->restart); +} + +void iwlagn_init_alive_start(struct iwl_priv *priv) +{ + int ret = 0; + + /* Check alive response for "valid" sign from uCode */ + if (priv->card_alive_init.is_valid != UCODE_VALID_OK) { + /* We had an error bringing up the hardware, so take it + * all the way back down so we can try again */ + IWL_DEBUG_INFO(priv, "Initialize Alive failed.\n"); + goto restart; + } + + /* initialize uCode was loaded... verify inst image. + * This is a paranoid check, because we would not have gotten the + * "initialize" alive if code weren't properly loaded. */ + if (iwl_verify_ucode(priv)) { + /* Runtime instruction load was bad; + * take it all the way back down so we can try again */ + IWL_DEBUG_INFO(priv, "Bad \"initialize\" uCode load.\n"); + goto restart; + } + + ret = priv->cfg->ops->lib->alive_notify(priv); + if (ret) { + IWL_WARN(priv, + "Could not complete ALIVE transition: %d\n", ret); + goto restart; + } + + iwlagn_send_calib_cfg(priv); + return; + +restart: + /* real restart (first load init_ucode) */ + queue_work(priv->workqueue, &priv->restart); +} + +static int iwlagn_send_wimax_coex(struct iwl_priv *priv) +{ + struct iwl_wimax_coex_cmd coex_cmd; + + if (priv->cfg->support_wimax_coexist) { + /* UnMask wake up src at associated sleep */ + coex_cmd.flags = COEX_FLAGS_ASSOC_WA_UNMASK_MSK; + + /* UnMask wake up src at unassociated sleep */ + coex_cmd.flags |= COEX_FLAGS_UNASSOC_WA_UNMASK_MSK; + memcpy(coex_cmd.sta_prio, cu_priorities, + sizeof(struct iwl_wimax_coex_event_entry) * + COEX_NUM_OF_EVENTS); + + /* enabling the coexistence feature */ + coex_cmd.flags |= COEX_FLAGS_COEX_ENABLE_MSK; + + /* enabling the priorities tables */ + coex_cmd.flags |= COEX_FLAGS_STA_TABLE_VALID_MSK; + } else { + /* coexistence is disabled */ + memset(&coex_cmd, 0, sizeof(coex_cmd)); + } + return iwl_send_cmd_pdu(priv, COEX_PRIORITY_TABLE_CMD, + sizeof(coex_cmd), &coex_cmd); +} + +int iwlagn_alive_notify(struct iwl_priv *priv) +{ + u32 a; + unsigned long flags; + int i, chan; + u32 reg_val; + + spin_lock_irqsave(&priv->lock, flags); + + priv->scd_base_addr = iwl_read_prph(priv, IWLAGN_SCD_SRAM_BASE_ADDR); + a = priv->scd_base_addr + IWLAGN_SCD_CONTEXT_DATA_OFFSET; + for (; a < priv->scd_base_addr + IWLAGN_SCD_TX_STTS_BITMAP_OFFSET; + a += 4) + iwl_write_targ_mem(priv, a, 0); + for (; a < priv->scd_base_addr + IWLAGN_SCD_TRANSLATE_TBL_OFFSET; + a += 4) + iwl_write_targ_mem(priv, a, 0); + for (; a < priv->scd_base_addr + + IWLAGN_SCD_TRANSLATE_TBL_OFFSET_QUEUE(priv->hw_params.max_txq_num); a += 4) + iwl_write_targ_mem(priv, a, 0); + + iwl_write_prph(priv, IWLAGN_SCD_DRAM_BASE_ADDR, + priv->scd_bc_tbls.dma >> 10); + + /* Enable DMA channel */ + for (chan = 0; chan < FH50_TCSR_CHNL_NUM ; chan++) + iwl_write_direct32(priv, FH_TCSR_CHNL_TX_CONFIG_REG(chan), + FH_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_ENABLE | + FH_TCSR_TX_CONFIG_REG_VAL_DMA_CREDIT_ENABLE); + + /* Update FH chicken bits */ + reg_val = iwl_read_direct32(priv, FH_TX_CHICKEN_BITS_REG); + iwl_write_direct32(priv, FH_TX_CHICKEN_BITS_REG, + reg_val | FH_TX_CHICKEN_BITS_SCD_AUTO_RETRY_EN); + + iwl_write_prph(priv, IWLAGN_SCD_QUEUECHAIN_SEL, + IWLAGN_SCD_QUEUECHAIN_SEL_ALL(priv->hw_params.max_txq_num)); + iwl_write_prph(priv, IWLAGN_SCD_AGGR_SEL, 0); + + /* initiate the queues */ + for (i = 0; i < priv->hw_params.max_txq_num; i++) { + iwl_write_prph(priv, IWLAGN_SCD_QUEUE_RDPTR(i), 0); + iwl_write_direct32(priv, HBUS_TARG_WRPTR, 0 | (i << 8)); + iwl_write_targ_mem(priv, priv->scd_base_addr + + IWLAGN_SCD_CONTEXT_QUEUE_OFFSET(i), 0); + iwl_write_targ_mem(priv, priv->scd_base_addr + + IWLAGN_SCD_CONTEXT_QUEUE_OFFSET(i) + + sizeof(u32), + ((SCD_WIN_SIZE << + IWLAGN_SCD_QUEUE_CTX_REG2_WIN_SIZE_POS) & + IWLAGN_SCD_QUEUE_CTX_REG2_WIN_SIZE_MSK) | + ((SCD_FRAME_LIMIT << + IWLAGN_SCD_QUEUE_CTX_REG2_FRAME_LIMIT_POS) & + IWLAGN_SCD_QUEUE_CTX_REG2_FRAME_LIMIT_MSK)); + } + + iwl_write_prph(priv, IWLAGN_SCD_INTERRUPT_MASK, + IWL_MASK(0, priv->hw_params.max_txq_num)); + + /* Activate all Tx DMA/FIFO channels */ + priv->cfg->ops->lib->txq_set_sched(priv, IWL_MASK(0, 7)); + + iwlagn_set_wr_ptrs(priv, IWL_CMD_QUEUE_NUM, 0); + + /* make sure all queue are not stopped */ + memset(&priv->queue_stopped[0], 0, sizeof(priv->queue_stopped)); + for (i = 0; i < 4; i++) + atomic_set(&priv->queue_stop_count[i], 0); + + /* reset to 0 to enable all the queue first */ + priv->txq_ctx_active_msk = 0; + /* map qos queues to fifos one-to-one */ + BUILD_BUG_ON(ARRAY_SIZE(iwlagn_default_queue_to_tx_fifo) != 10); + + for (i = 0; i < ARRAY_SIZE(iwlagn_default_queue_to_tx_fifo); i++) { + int ac = iwlagn_default_queue_to_tx_fifo[i]; + + iwl_txq_ctx_activate(priv, i); + + if (ac == IWL_TX_FIFO_UNUSED) + continue; + + iwlagn_tx_queue_set_status(priv, &priv->txq[i], ac, 0); + } + + spin_unlock_irqrestore(&priv->lock, flags); + + iwlagn_send_wimax_coex(priv); + + iwlagn_set_Xtal_calib(priv); + iwl_send_calib_results(priv); + + return 0; +} |