From 99da1b48fc77484aa8da85a45d9c3c1e00243659 Mon Sep 17 00:00:00 2001 From: Ron Rindjunsky Date: Thu, 15 May 2008 13:54:13 +0800 Subject: [PATCH] iwlwifi: add ucode init flow handling for iwl5000 This patch adds all the handlers and functions needed for ucode initialization flow. Signed-off-by: Ron Rindjunsky Signed-off-by: Tomas Winkler Signed-off-by: John W. Linville --- drivers/net/wireless/iwlwifi/iwl-5000.c | 157 ++++++++++++++++++++++++ drivers/net/wireless/iwlwifi/iwl-prph.h | 28 +++++ 2 files changed, 185 insertions(+) diff --git a/drivers/net/wireless/iwlwifi/iwl-5000.c b/drivers/net/wireless/iwlwifi/iwl-5000.c index b6bdffc5a4..5e818eedb0 100644 --- a/drivers/net/wireless/iwlwifi/iwl-5000.c +++ b/drivers/net/wireless/iwlwifi/iwl-5000.c @@ -46,6 +46,16 @@ #define IWL5000_UCODE_API "-1" +static const u16 iwl5000_default_queue_to_tx_fifo[] = { + IWL_TX_FIFO_AC3, + IWL_TX_FIFO_AC2, + IWL_TX_FIFO_AC1, + IWL_TX_FIFO_AC0, + IWL50_CMD_FIFO_NUM, + IWL_TX_FIFO_HCCA_1, + IWL_TX_FIFO_HCCA_2 +}; + static int iwl5000_apm_init(struct iwl_priv *priv) { int ret = 0; @@ -420,6 +430,151 @@ static int iwl5000_load_ucode(struct iwl_priv *priv) return ret; } +static void iwl5000_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("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("Bad \"initialize\" uCode load.\n"); + goto restart; + } + + iwlcore_clear_stations_table(priv); + ret = priv->cfg->ops->lib->alive_notify(priv); + if (ret) { + IWL_WARNING("Could not complete ALIVE transition: %d\n", ret); + goto restart; + } + + return; + +restart: + /* real restart (first load init_ucode) */ + queue_work(priv->workqueue, &priv->restart); +} + +static void iwl5000_set_wr_ptrs(struct iwl_priv *priv, + int txq_id, u32 index) +{ + iwl_write_direct32(priv, HBUS_TARG_WRPTR, + (index & 0xff) | (txq_id << 8)); + iwl_write_prph(priv, IWL50_SCD_QUEUE_RDPTR(txq_id), index); +} + +static void iwl5000_tx_queue_set_status(struct iwl_priv *priv, + struct iwl_tx_queue *txq, + int tx_fifo_id, int scd_retry) +{ + int txq_id = txq->q.id; + int active = test_bit(txq_id, &priv->txq_ctx_active_msk)?1:0; + + iwl_write_prph(priv, IWL50_SCD_QUEUE_STATUS_BITS(txq_id), + (active << IWL50_SCD_QUEUE_STTS_REG_POS_ACTIVE) | + (tx_fifo_id << IWL50_SCD_QUEUE_STTS_REG_POS_TXF) | + (1 << IWL50_SCD_QUEUE_STTS_REG_POS_WSL) | + IWL50_SCD_QUEUE_STTS_REG_MSK); + + txq->sched_retry = scd_retry; + + IWL_DEBUG_INFO("%s %s Queue %d on AC %d\n", + active ? "Activate" : "Deactivate", + scd_retry ? "BA" : "AC", txq_id, tx_fifo_id); +} + +static int iwl5000_alive_notify(struct iwl_priv *priv) +{ + u32 a; + int i = 0; + unsigned long flags; + int ret; + + spin_lock_irqsave(&priv->lock, flags); + + ret = iwl_grab_nic_access(priv); + if (ret) { + spin_unlock_irqrestore(&priv->lock, flags); + return ret; + } + + priv->scd_base_addr = iwl_read_prph(priv, IWL50_SCD_SRAM_BASE_ADDR); + a = priv->scd_base_addr + IWL50_SCD_CONTEXT_DATA_OFFSET; + for (; a < priv->scd_base_addr + IWL50_SCD_TX_STTS_BITMAP_OFFSET; + a += 4) + iwl_write_targ_mem(priv, a, 0); + for (; a < priv->scd_base_addr + IWL50_SCD_TRANSLATE_TBL_OFFSET; + a += 4) + iwl_write_targ_mem(priv, a, 0); + for (; a < sizeof(u16) * priv->hw_params.max_txq_num; a += 4) + iwl_write_targ_mem(priv, a, 0); + + iwl_write_prph(priv, IWL50_SCD_DRAM_BASE_ADDR, + (priv->shared_phys + + offsetof(struct iwl5000_shared, queues_byte_cnt_tbls)) >> 10); + iwl_write_prph(priv, IWL50_SCD_QUEUECHAIN_SEL, + IWL50_SCD_QUEUECHAIN_SEL_ALL( + priv->hw_params.max_txq_num)); + iwl_write_prph(priv, IWL50_SCD_AGGR_SEL, 0); + + /* initiate the queues */ + for (i = 0; i < priv->hw_params.max_txq_num; i++) { + iwl_write_prph(priv, IWL50_SCD_QUEUE_RDPTR(i), 0); + iwl_write_direct32(priv, HBUS_TARG_WRPTR, 0 | (i << 8)); + iwl_write_targ_mem(priv, priv->scd_base_addr + + IWL50_SCD_CONTEXT_QUEUE_OFFSET(i), 0); + iwl_write_targ_mem(priv, priv->scd_base_addr + + IWL50_SCD_CONTEXT_QUEUE_OFFSET(i) + + sizeof(u32), + ((SCD_WIN_SIZE << + IWL50_SCD_QUEUE_CTX_REG2_WIN_SIZE_POS) & + IWL50_SCD_QUEUE_CTX_REG2_WIN_SIZE_MSK) | + ((SCD_FRAME_LIMIT << + IWL50_SCD_QUEUE_CTX_REG2_FRAME_LIMIT_POS) & + IWL50_SCD_QUEUE_CTX_REG2_FRAME_LIMIT_MSK)); + } + + iwl_write_prph(priv, IWL50_SCD_INTERRUPT_MASK, + (1 << priv->hw_params.max_txq_num) - 1); + + iwl_write_prph(priv, IWL50_SCD_TXFACT, + SCD_TXFACT_REG_TXFIFO_MASK(0, 7)); + + iwl5000_set_wr_ptrs(priv, IWL_CMD_QUEUE_NUM, 0); + /* map qos queues to fifos one-to-one */ + for (i = 0; i < ARRAY_SIZE(iwl5000_default_queue_to_tx_fifo); i++) { + int ac = iwl5000_default_queue_to_tx_fifo[i]; + iwl_txq_ctx_activate(priv, i); + iwl5000_tx_queue_set_status(priv, &priv->txq[i], ac, 0); + } + /* TODO - need to initialize those FIFOs inside the loop above, + * not only mark them as active */ + iwl_txq_ctx_activate(priv, 4); + iwl_txq_ctx_activate(priv, 7); + iwl_txq_ctx_activate(priv, 8); + iwl_txq_ctx_activate(priv, 9); + + iwl_release_nic_access(priv); + spin_unlock_irqrestore(&priv->lock, flags); + + /* Ask for statistics now, the uCode will send notification + * periodically after association */ + iwl_send_statistics_request(priv, CMD_ASYNC); + + return 0; +} + static int iwl5000_hw_set_hw_params(struct iwl_priv *priv) { if ((priv->cfg->mod_params->num_of_queues > IWL50_NUM_QUEUES) || @@ -622,6 +777,8 @@ static struct iwl_lib_ops iwl5000_lib = { .disable_tx_fifo = iwl5000_disable_tx_fifo, .rx_handler_setup = iwl5000_rx_handler_setup, .load_ucode = iwl5000_load_ucode, + .init_alive_start = iwl5000_init_alive_start, + .alive_notify = iwl5000_alive_notify, .apm_ops = { .init = iwl5000_apm_init, .config = iwl5000_nic_config, diff --git a/drivers/net/wireless/iwlwifi/iwl-prph.h b/drivers/net/wireless/iwlwifi/iwl-prph.h index acac629386..d6a04f65f3 100644 --- a/drivers/net/wireless/iwlwifi/iwl-prph.h +++ b/drivers/net/wireless/iwlwifi/iwl-prph.h @@ -517,6 +517,34 @@ #define IWL49_SCD_QUEUE_RA_TID_MAP_RATID_MSK (0x01FF) /* 5000 SCD */ +#define IWL50_SCD_QUEUE_STTS_REG_POS_TXF (0) +#define IWL50_SCD_QUEUE_STTS_REG_POS_ACTIVE (3) +#define IWL50_SCD_QUEUE_STTS_REG_POS_WSL (4) +#define IWL50_SCD_QUEUE_STTS_REG_POS_SCD_ACT_EN (19) +#define IWL50_SCD_QUEUE_STTS_REG_MSK (0x00FF0000) + +#define IWL50_SCD_QUEUE_CTX_REG1_CREDIT_POS (8) +#define IWL50_SCD_QUEUE_CTX_REG1_CREDIT_MSK (0x00FFFF00) +#define IWL50_SCD_QUEUE_CTX_REG1_SUPER_CREDIT_POS (24) +#define IWL50_SCD_QUEUE_CTX_REG1_SUPER_CREDIT_MSK (0xFF000000) +#define IWL50_SCD_QUEUE_CTX_REG2_WIN_SIZE_POS (0) +#define IWL50_SCD_QUEUE_CTX_REG2_WIN_SIZE_MSK (0x0000007F) +#define IWL50_SCD_QUEUE_CTX_REG2_FRAME_LIMIT_POS (16) +#define IWL50_SCD_QUEUE_CTX_REG2_FRAME_LIMIT_MSK (0x007F0000) + +#define IWL50_SCD_CONTEXT_DATA_OFFSET (0x600) +#define IWL50_SCD_TX_STTS_BITMAP_OFFSET (0x7B1) +#define IWL50_SCD_TRANSLATE_TBL_OFFSET (0x7E0) + +#define IWL50_SCD_CONTEXT_QUEUE_OFFSET(x)\ + (IWL50_SCD_CONTEXT_DATA_OFFSET + ((x) * 8)) + +#define IWL50_SCD_TRANSLATE_TBL_OFFSET_QUEUE(x) \ + ((IWL50_SCD_TRANSLATE_TBL_OFFSET + ((x) * 2)) & 0xfffc) + +#define IWL50_SCD_QUEUECHAIN_SEL_ALL(x) (((1<<(x)) - 1) &\ + (~(1<