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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-01-29 22:54:01 +1100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-01-29 22:54:01 +1100 |
| commit | 0ba6c33bcddc64a54b5f1c25a696c4767dc76292 (patch) | |
| tree | 62e616f97a4762d8e75bf732e4827af2d15d52c5 /drivers/net/wireless/iwlwifi/iwl-4965.c | |
| parent | 21af0297c7e56024a5ccc4d8ad2a590f9ec371ba (diff) | |
| parent | 85040bcb4643cba578839e953f25e2d1965d83d0 (diff) | |
| download | op-kernel-dev-0ba6c33bcddc64a54b5f1c25a696c4767dc76292.zip op-kernel-dev-0ba6c33bcddc64a54b5f1c25a696c4767dc76292.tar.gz | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6.25
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6.25: (1470 commits)
[IPV6] ADDRLABEL: Fix double free on label deletion.
[PPP]: Sparse warning fixes.
[IPV4] fib_trie: remove unneeded NULL check
[IPV4] fib_trie: More whitespace cleanup.
[NET_SCHED]: Use nla_policy for attribute validation in ematches
[NET_SCHED]: Use nla_policy for attribute validation in actions
[NET_SCHED]: Use nla_policy for attribute validation in classifiers
[NET_SCHED]: Use nla_policy for attribute validation in packet schedulers
[NET_SCHED]: sch_api: introduce constant for rate table size
[NET_SCHED]: Use typeful attribute parsing helpers
[NET_SCHED]: Use typeful attribute construction helpers
[NET_SCHED]: Use NLA_PUT_STRING for string dumping
[NET_SCHED]: Use nla_nest_start/nla_nest_end
[NET_SCHED]: Propagate nla_parse return value
[NET_SCHED]: act_api: use PTR_ERR in tcf_action_init/tcf_action_get
[NET_SCHED]: act_api: use nlmsg_parse
[NET_SCHED]: act_api: fix netlink API conversion bug
[NET_SCHED]: sch_netem: use nla_parse_nested_compat
[NET_SCHED]: sch_atm: fix format string warning
[NETNS]: Add namespace for ICMP replying code.
...
Diffstat (limited to 'drivers/net/wireless/iwlwifi/iwl-4965.c')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-4965.c | 1551 |
1 files changed, 895 insertions, 656 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-4965.c b/drivers/net/wireless/iwlwifi/iwl-4965.c index 891f90d..04db34b 100644 --- a/drivers/net/wireless/iwlwifi/iwl-4965.c +++ b/drivers/net/wireless/iwlwifi/iwl-4965.c @@ -36,13 +36,13 @@ #include <linux/wireless.h> #include <net/mac80211.h> #include <linux/etherdevice.h> +#include <asm/unaligned.h> -#define IWL 4965 - -#include "iwlwifi.h" #include "iwl-4965.h" #include "iwl-helpers.h" +static void iwl4965_hw_card_show_info(struct iwl4965_priv *priv); + #define IWL_DECLARE_RATE_INFO(r, s, ip, in, rp, rn, pp, np) \ [IWL_RATE_##r##M_INDEX] = { IWL_RATE_##r##M_PLCP, \ IWL_RATE_SISO_##s##M_PLCP, \ @@ -63,7 +63,7 @@ * maps to IWL_RATE_INVALID * */ -const struct iwl_rate_info iwl_rates[IWL_RATE_COUNT] = { +const struct iwl4965_rate_info iwl4965_rates[IWL_RATE_COUNT] = { IWL_DECLARE_RATE_INFO(1, INV, INV, 2, INV, 2, INV, 2), /* 1mbps */ IWL_DECLARE_RATE_INFO(2, INV, 1, 5, 1, 5, 1, 5), /* 2mbps */ IWL_DECLARE_RATE_INFO(5, INV, 2, 6, 2, 11, 2, 11), /*5.5mbps */ @@ -85,16 +85,16 @@ static int is_fat_channel(__le32 rxon_flags) (rxon_flags & RXON_FLG_CHANNEL_MODE_MIXED_MSK); } -static u8 is_single_stream(struct iwl_priv *priv) +static u8 is_single_stream(struct iwl4965_priv *priv) { -#ifdef CONFIG_IWLWIFI_HT - if (!priv->is_ht_enabled || !priv->current_assoc_ht.is_ht || - (priv->active_rate_ht[1] == 0) || +#ifdef CONFIG_IWL4965_HT + if (!priv->current_ht_config.is_ht || + (priv->current_ht_config.supp_mcs_set[1] == 0) || (priv->ps_mode == IWL_MIMO_PS_STATIC)) return 1; #else return 1; -#endif /*CONFIG_IWLWIFI_HT */ +#endif /*CONFIG_IWL4965_HT */ return 0; } @@ -104,7 +104,7 @@ static u8 is_single_stream(struct iwl_priv *priv) * MIMO (dual stream) requires at least 2, but works better with 3. * This does not determine *which* chains to use, just how many. */ -static int iwl4965_get_rx_chain_counter(struct iwl_priv *priv, +static int iwl4965_get_rx_chain_counter(struct iwl4965_priv *priv, u8 *idle_state, u8 *rx_state) { u8 is_single = is_single_stream(priv); @@ -133,32 +133,32 @@ static int iwl4965_get_rx_chain_counter(struct iwl_priv *priv, return 0; } -int iwl_hw_rxq_stop(struct iwl_priv *priv) +int iwl4965_hw_rxq_stop(struct iwl4965_priv *priv) { int rc; unsigned long flags; spin_lock_irqsave(&priv->lock, flags); - rc = iwl_grab_restricted_access(priv); + rc = iwl4965_grab_nic_access(priv); if (rc) { spin_unlock_irqrestore(&priv->lock, flags); return rc; } - /* stop HW */ - iwl_write_restricted(priv, FH_MEM_RCSR_CHNL0_CONFIG_REG, 0); - rc = iwl_poll_restricted_bit(priv, FH_MEM_RSSR_RX_STATUS_REG, + /* stop Rx DMA */ + iwl4965_write_direct32(priv, FH_MEM_RCSR_CHNL0_CONFIG_REG, 0); + rc = iwl4965_poll_direct_bit(priv, FH_MEM_RSSR_RX_STATUS_REG, (1 << 24), 1000); if (rc < 0) IWL_ERROR("Can't stop Rx DMA.\n"); - iwl_release_restricted_access(priv); + iwl4965_release_nic_access(priv); spin_unlock_irqrestore(&priv->lock, flags); return 0; } -u8 iwl_hw_find_station(struct iwl_priv *priv, const u8 *addr) +u8 iwl4965_hw_find_station(struct iwl4965_priv *priv, const u8 *addr) { int i; int start = 0; @@ -190,104 +190,114 @@ u8 iwl_hw_find_station(struct iwl_priv *priv, const u8 *addr) return ret; } -static int iwl4965_nic_set_pwr_src(struct iwl_priv *priv, int pwr_max) +static int iwl4965_nic_set_pwr_src(struct iwl4965_priv *priv, int pwr_max) { - int rc = 0; + int ret; unsigned long flags; spin_lock_irqsave(&priv->lock, flags); - rc = iwl_grab_restricted_access(priv); - if (rc) { + ret = iwl4965_grab_nic_access(priv); + if (ret) { spin_unlock_irqrestore(&priv->lock, flags); - return rc; + return ret; } if (!pwr_max) { u32 val; - rc = pci_read_config_dword(priv->pci_dev, PCI_POWER_SOURCE, + ret = pci_read_config_dword(priv->pci_dev, PCI_POWER_SOURCE, &val); if (val & PCI_CFG_PMC_PME_FROM_D3COLD_SUPPORT) - iwl_set_bits_mask_restricted_reg( - priv, APMG_PS_CTRL_REG, + iwl4965_set_bits_mask_prph(priv, APMG_PS_CTRL_REG, APMG_PS_CTRL_VAL_PWR_SRC_VAUX, ~APMG_PS_CTRL_MSK_PWR_SRC); } else - iwl_set_bits_mask_restricted_reg( - priv, APMG_PS_CTRL_REG, + iwl4965_set_bits_mask_prph(priv, APMG_PS_CTRL_REG, APMG_PS_CTRL_VAL_PWR_SRC_VMAIN, ~APMG_PS_CTRL_MSK_PWR_SRC); - iwl_release_restricted_access(priv); + iwl4965_release_nic_access(priv); spin_unlock_irqrestore(&priv->lock, flags); - return rc; + return ret; } -static int iwl4965_rx_init(struct iwl_priv *priv, struct iwl_rx_queue *rxq) +static int iwl4965_rx_init(struct iwl4965_priv *priv, struct iwl4965_rx_queue *rxq) { int rc; unsigned long flags; + unsigned int rb_size; spin_lock_irqsave(&priv->lock, flags); - rc = iwl_grab_restricted_access(priv); + rc = iwl4965_grab_nic_access(priv); if (rc) { spin_unlock_irqrestore(&priv->lock, flags); return rc; } - /* stop HW */ - iwl_write_restricted(priv, FH_MEM_RCSR_CHNL0_CONFIG_REG, 0); + if (iwl4965_param_amsdu_size_8K) + rb_size = FH_RCSR_RX_CONFIG_REG_VAL_RB_SIZE_8K; + else + rb_size = FH_RCSR_RX_CONFIG_REG_VAL_RB_SIZE_4K; + + /* Stop Rx DMA */ + iwl4965_write_direct32(priv, FH_MEM_RCSR_CHNL0_CONFIG_REG, 0); + + /* Reset driver's Rx queue write index */ + iwl4965_write_direct32(priv, FH_RSCSR_CHNL0_RBDCB_WPTR_REG, 0); - iwl_write_restricted(priv, FH_RSCSR_CHNL0_RBDCB_WPTR_REG, 0); - iwl_write_restricted(priv, FH_RSCSR_CHNL0_RBDCB_BASE_REG, + /* Tell device where to find RBD circular buffer in DRAM */ + iwl4965_write_direct32(priv, FH_RSCSR_CHNL0_RBDCB_BASE_REG, rxq->dma_addr >> 8); - iwl_write_restricted(priv, FH_RSCSR_CHNL0_STTS_WPTR_REG, + /* Tell device where in DRAM to update its Rx status */ + iwl4965_write_direct32(priv, FH_RSCSR_CHNL0_STTS_WPTR_REG, (priv->hw_setting.shared_phys + - offsetof(struct iwl_shared, val0)) >> 4); + offsetof(struct iwl4965_shared, val0)) >> 4); - iwl_write_restricted(priv, FH_MEM_RCSR_CHNL0_CONFIG_REG, + /* Enable Rx DMA, enable host interrupt, Rx buffer size 4k, 256 RBDs */ + iwl4965_write_direct32(priv, FH_MEM_RCSR_CHNL0_CONFIG_REG, FH_RCSR_RX_CONFIG_CHNL_EN_ENABLE_VAL | FH_RCSR_CHNL0_RX_CONFIG_IRQ_DEST_INT_HOST_VAL | - IWL_FH_RCSR_RX_CONFIG_REG_VAL_RB_SIZE_4K | + rb_size | /*0x10 << 4 | */ (RX_QUEUE_SIZE_LOG << FH_RCSR_RX_CONFIG_RBDCB_SIZE_BITSHIFT)); /* - * iwl_write32(priv,CSR_INT_COAL_REG,0); + * iwl4965_write32(priv,CSR_INT_COAL_REG,0); */ - iwl_release_restricted_access(priv); + iwl4965_release_nic_access(priv); spin_unlock_irqrestore(&priv->lock, flags); return 0; } -static int iwl4965_kw_init(struct iwl_priv *priv) +/* Tell 4965 where to find the "keep warm" buffer */ +static int iwl4965_kw_init(struct iwl4965_priv *priv) { unsigned long flags; int rc; spin_lock_irqsave(&priv->lock, flags); - rc = iwl_grab_restricted_access(priv); + rc = iwl4965_grab_nic_access(priv); if (rc) goto out; - iwl_write_restricted(priv, IWL_FH_KW_MEM_ADDR_REG, + iwl4965_write_direct32(priv, IWL_FH_KW_MEM_ADDR_REG, priv->kw.dma_addr >> 4); - iwl_release_restricted_access(priv); + iwl4965_release_nic_access(priv); out: spin_unlock_irqrestore(&priv->lock, flags); return rc; } -static int iwl4965_kw_alloc(struct iwl_priv *priv) +static int iwl4965_kw_alloc(struct iwl4965_priv *priv) { struct pci_dev *dev = priv->pci_dev; - struct iwl_kw *kw = &priv->kw; + struct iwl4965_kw *kw = &priv->kw; kw->size = IWL4965_KW_SIZE; /* TBW need set somewhere else */ kw->v_addr = pci_alloc_consistent(dev, kw->size, &kw->dma_addr); @@ -300,14 +310,19 @@ static int iwl4965_kw_alloc(struct iwl_priv *priv) #define CHECK_AND_PRINT(x) ((eeprom_ch->flags & EEPROM_CHANNEL_##x) \ ? # x " " : "") -int iwl4965_set_fat_chan_info(struct iwl_priv *priv, int phymode, u16 channel, - const struct iwl_eeprom_channel *eeprom_ch, +/** + * iwl4965_set_fat_chan_info - Copy fat channel info into driver's priv. + * + * Does not set up a command, or touch hardware. + */ +int iwl4965_set_fat_chan_info(struct iwl4965_priv *priv, int phymode, u16 channel, + const struct iwl4965_eeprom_channel *eeprom_ch, u8 fat_extension_channel) { - struct iwl_channel_info *ch_info; + struct iwl4965_channel_info *ch_info; - ch_info = (struct iwl_channel_info *) - iwl_get_channel_info(priv, phymode, channel); + ch_info = (struct iwl4965_channel_info *) + iwl4965_get_channel_info(priv, phymode, channel); if (!is_channel_valid(ch_info)) return -1; @@ -340,10 +355,13 @@ int iwl4965_set_fat_chan_info(struct iwl_priv *priv, int phymode, u16 channel, return 0; } -static void iwl4965_kw_free(struct iwl_priv *priv) +/** + * iwl4965_kw_free - Free the "keep warm" buffer + */ +static void iwl4965_kw_free(struct iwl4965_priv *priv) { struct pci_dev *dev = priv->pci_dev; - struct iwl_kw *kw = &priv->kw; + struct iwl4965_kw *kw = &priv->kw; if (kw->v_addr) { pci_free_consistent(dev, kw->size, kw->v_addr, kw->dma_addr); @@ -358,7 +376,7 @@ static void iwl4965_kw_free(struct iwl_priv *priv) * @param priv * @return error code */ -static int iwl4965_txq_ctx_reset(struct iwl_priv *priv) +static int iwl4965_txq_ctx_reset(struct iwl4965_priv *priv) { int rc = 0; int txq_id, slots_num; @@ -366,9 +384,10 @@ static int iwl4965_txq_ctx_reset(struct iwl_priv *priv) iwl4965_kw_free(priv); - iwl_hw_txq_ctx_free(priv); + /* Free all tx/cmd queues and keep-warm buffer */ + iwl4965_hw_txq_ctx_free(priv); - /* Tx CMD queue */ + /* Alloc keep-warm buffer */ rc = iwl4965_kw_alloc(priv); if (rc) { IWL_ERROR("Keep Warm allocation failed"); @@ -377,28 +396,31 @@ static int iwl4965_txq_ctx_reset(struct iwl_priv *priv) spin_lock_irqsave(&priv->lock, flags); - rc = iwl_grab_restricted_access(priv); + rc = iwl4965_grab_nic_access(priv); if (unlikely(rc)) { IWL_ERROR("TX reset failed"); spin_unlock_irqrestore(&priv->lock, flags); goto error_reset; } - iwl_write_restricted_reg(priv, SCD_TXFACT, 0); - iwl_release_restricted_access(priv); + /* Turn off all Tx DMA channels */ + iwl4965_write_prph(priv, KDR_SCD_TXFACT, 0); + iwl4965_release_nic_access(priv); spin_unlock_irqrestore(&priv->lock, flags); + /* Tell 4965 where to find the keep-warm buffer */ rc = iwl4965_kw_init(priv); if (rc) { IWL_ERROR("kw_init failed\n"); goto error_reset; } - /* Tx queue(s) */ + /* Alloc and init all (default 16) Tx queues, + * including the command queue (#4) */ for (txq_id = 0; txq_id < priv->hw_setting.max_txq_num; txq_id++) { slots_num = (txq_id == IWL_CMD_QUEUE_NUM) ? TFD_CMD_SLOTS : TFD_TX_CMD_SLOTS; - rc = iwl_tx_queue_init(priv, &priv->txq[txq_id], slots_num, + rc = iwl4965_tx_queue_init(priv, &priv->txq[txq_id], slots_num, txq_id); if (rc) { IWL_ERROR("Tx %d queue init failed\n", txq_id); @@ -409,32 +431,32 @@ static int iwl4965_txq_ctx_reset(struct iwl_priv *priv) return rc; error: - iwl_hw_txq_ctx_free(priv); + iwl4965_hw_txq_ctx_free(priv); error_reset: iwl4965_kw_free(priv); error_kw: return rc; } -int iwl_hw_nic_init(struct iwl_priv *priv) +int iwl4965_hw_nic_init(struct iwl4965_priv *priv) { int rc; unsigned long flags; - struct iwl_rx_queue *rxq = &priv->rxq; + struct iwl4965_rx_queue *rxq = &priv->rxq; u8 rev_id; u32 val; u8 val_link; - iwl_power_init_handle(priv); + iwl4965_power_init_handle(priv); /* nic_init */ spin_lock_irqsave(&priv->lock, flags); - iwl_set_bit(priv, CSR_GIO_CHICKEN_BITS, + iwl4965_set_bit(priv, CSR_GIO_CHICKEN_BITS, CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER); - iwl_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE); - rc = iwl_poll_bit(priv, CSR_GP_CNTRL, + iwl4965_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE); + rc = iwl4965_poll_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000); if (rc < 0) { @@ -443,26 +465,26 @@ int iwl_hw_nic_init(struct iwl_priv *priv) return rc; } - rc = iwl_grab_restricted_access(priv); + rc = iwl4965_grab_nic_access(priv); if (rc) { spin_unlock_irqrestore(&priv->lock, flags); return rc; } - iwl_read_restricted_reg(priv, APMG_CLK_CTRL_REG); + iwl4965_read_prph(priv, APMG_CLK_CTRL_REG); - iwl_write_restricted_reg(priv, APMG_CLK_CTRL_REG, + iwl4965_write_prph(priv, APMG_CLK_CTRL_REG, APMG_CLK_VAL_DMA_CLK_RQT | APMG_CLK_VAL_BSM_CLK_RQT); - iwl_read_restricted_reg(priv, APMG_CLK_CTRL_REG); + iwl4965_read_prph(priv, APMG_CLK_CTRL_REG); udelay(20); - iwl_set_bits_restricted_reg(priv, APMG_PCIDEV_STT_REG, + iwl4965_set_bits_prph(priv, APMG_PCIDEV_STT_REG, APMG_PCIDEV_STT_VAL_L1_ACT_DIS); - iwl_release_restricted_access(priv); - iwl_write32(priv, CSR_INT_COALESCING, 512 / 32); + iwl4965_release_nic_access(priv); + iwl4965_write32(priv, CSR_INT_COALESCING, 512 / 32); spin_unlock_irqrestore(&priv->lock, flags); /* Determine HW type */ @@ -484,11 +506,6 @@ int iwl_hw_nic_init(struct iwl_priv *priv) spin_unlock_irqrestore(&priv->lock, flags); - /* Read the EEPROM */ - rc = iwl_eeprom_init(priv); - if (rc) - return rc; - if (priv->eeprom.calib_version < EEPROM_TX_POWER_VERSION_NEW) { IWL_ERROR("Older EEPROM detected! Aborting.\n"); return -EINVAL; @@ -503,51 +520,53 @@ int iwl_hw_nic_init(struct iwl_priv *priv) /* set CSR_HW_CONFIG_REG for uCode use */ - iwl_set_bit(priv, CSR_SW_VER, CSR_HW_IF_CONFIG_REG_BIT_KEDRON_R | + iwl4965_set_bit(priv, CSR_SW_VER, CSR_HW_IF_CONFIG_REG_BIT_KEDRON_R | CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI | CSR_HW_IF_CONFIG_REG_BIT_MAC_SI); - rc = iwl_grab_restricted_access(priv); + rc = iwl4965_grab_nic_access(priv); if (rc < 0) { spin_unlock_irqrestore(&priv->lock, flags); IWL_DEBUG_INFO("Failed to init the card\n"); return rc; } - iwl_read_restricted_reg(priv, APMG_PS_CTRL_REG); - iwl_set_bits_restricted_reg(priv, APMG_PS_CTRL_REG, + iwl4965_read_prph(priv, APMG_PS_CTRL_REG); + iwl4965_set_bits_prph(priv, APMG_PS_CTRL_REG, APMG_PS_CTRL_VAL_RESET_REQ); udelay(5); - iwl_clear_bits_restricted_reg(priv, APMG_PS_CTRL_REG, + iwl4965_clear_bits_prph(priv, APMG_PS_CTRL_REG, APMG_PS_CTRL_VAL_RESET_REQ); - iwl_release_restricted_access(priv); + iwl4965_release_nic_access(priv); spin_unlock_irqrestore(&priv->lock, flags); - iwl_hw_card_show_info(priv); + iwl4965_hw_card_show_info(priv); /* end nic_init */ /* Allocate the RX queue, or reset if it is already allocated */ if (!rxq->bd) { - rc = iwl_rx_queue_alloc(priv); + rc = iwl4965_rx_queue_alloc(priv); if (rc) { IWL_ERROR("Unable to initialize Rx queue\n"); return -ENOMEM; } } else - iwl_rx_queue_reset(priv, rxq); + iwl4965_rx_queue_reset(priv, rxq); - iwl_rx_replenish(priv); + iwl4965_rx_replenish(priv); iwl4965_rx_init(priv, rxq); spin_lock_irqsave(&priv->lock, flags); rxq->need_update = 1; - iwl_rx_queue_update_write_ptr(priv, rxq); + iwl4965_rx_queue_update_write_ptr(priv, rxq); spin_unlock_irqrestore(&priv->lock, flags); + + /* Allocate and init all Tx and Command queues */ rc = iwl4965_txq_ctx_reset(priv); if (rc) return rc; @@ -563,7 +582,7 @@ int iwl_hw_nic_init(struct iwl_priv *priv) return 0; } -int iwl_hw_nic_stop_master(struct iwl_priv *priv) +int iwl4965_hw_nic_stop_master(struct iwl4965_priv *priv) { int rc = 0; u32 reg_val; @@ -572,16 +591,16 @@ int iwl_hw_nic_stop_master(struct iwl_priv *priv) spin_lock_irqsave(&priv->lock, flags); /* set stop master bit */ - iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_STOP_MASTER); + iwl4965_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_STOP_MASTER); - reg_val = iwl_read32(priv, CSR_GP_CNTRL); + reg_val = iwl4965_read32(priv, CSR_GP_CNTRL); if (CSR_GP_CNTRL_REG_FLAG_MAC_POWER_SAVE == (reg_val & CSR_GP_CNTRL_REG_MSK_POWER_SAVE_TYPE)) IWL_DEBUG_INFO("Card in power save, master is already " "stopped\n"); else { - rc = iwl_poll_bit(priv, CSR_RESET, + rc = iwl4965_poll_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_MASTER_DISABLED, CSR_RESET_REG_FLAG_MASTER_DISABLED, 100); if (rc < 0) { @@ -596,65 +615,69 @@ int iwl_hw_nic_stop_master(struct iwl_priv *priv) return rc; } -void iwl_hw_txq_ctx_stop(struct iwl_priv *priv) +/** + * iwl4965_hw_txq_ctx_stop - Stop all Tx DMA channels, free Tx queue memory + */ +void iwl4965_hw_txq_ctx_stop(struct iwl4965_priv *priv) { int txq_id; unsigned long flags; - /* reset TFD queues */ + /* Stop each Tx DMA channel, and wait for it to be idle */ for (txq_id = 0; txq_id < priv->hw_setting.max_txq_num; txq_id++) { spin_lock_irqsave(&priv->lock, flags); - if (iwl_grab_restricted_access(priv)) { + if (iwl4965_grab_nic_access(priv)) { spin_unlock_irqrestore(&priv->lock, flags); continue; } - iwl_write_restricted(priv, + iwl4965_write_direct32(priv, IWL_FH_TCSR_CHNL_TX_CONFIG_REG(txq_id), 0x0); - iwl_poll_restricted_bit(priv, IWL_FH_TSSR_TX_STATUS_REG, + iwl4965_poll_direct_bit(priv, IWL_FH_TSSR_TX_STATUS_REG, IWL_FH_TSSR_TX_STATUS_REG_MSK_CHNL_IDLE (txq_id), 200); - iwl_release_restricted_access(priv); + iwl4965_release_nic_access(priv); spin_unlock_irqrestore(&priv->lock, flags); } - iwl_hw_txq_ctx_free(priv); + /* Deallocate memory for all Tx queues */ + iwl4965_hw_txq_ctx_free(priv); } -int iwl_hw_nic_reset(struct iwl_priv *priv) +int iwl4965_hw_nic_reset(struct iwl4965_priv *priv) { int rc = 0; unsigned long flags; - iwl_hw_nic_stop_master(priv); + iwl4965_hw_nic_stop_master(priv); spin_lock_irqsave(&priv->lock, flags); - iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET); + iwl4965_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET); udelay(10); - iwl_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE); - rc = iwl_poll_bit(priv, CSR_RESET, + iwl4965_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE); + rc = iwl4965_poll_bit(priv, CSR_RESET, CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25); udelay(10); - rc = iwl_grab_restricted_access(priv); + rc = iwl4965_grab_nic_access(priv); if (!rc) { - iwl_write_restricted_reg(priv, APMG_CLK_EN_REG, + iwl4965_write_prph(priv, APMG_CLK_EN_REG, APMG_CLK_VAL_DMA_CLK_RQT | APMG_CLK_VAL_BSM_CLK_RQT); udelay(10); - iwl_set_bits_restricted_reg(priv, APMG_PCIDEV_STT_REG, + iwl4965_set_bits_prph(priv, APMG_PCIDEV_STT_REG, APMG_PCIDEV_STT_VAL_L1_ACT_DIS); - iwl_release_restricted_access(priv); + iwl4965_release_nic_access(priv); } clear_bit(STATUS_HCMD_ACTIVE, &priv->status); @@ -684,7 +707,7 @@ int iwl_hw_nic_reset(struct iwl_priv *priv) */ static void iwl4965_bg_statistics_periodic(unsigned long data) { - struct iwl_priv *priv = (struct iwl_priv *)data; + struct iwl4965_priv *priv = (struct iwl4965_priv *)data; queue_work(priv->workqueue, &priv->statistics_work); } @@ -692,27 +715,27 @@ static void iwl4965_bg_statistics_periodic(unsigned long data) /** * iwl4965_bg_statistics_work - Send the statistics request to the hardware. * - * This is queued by iwl_bg_statistics_periodic. + * This is queued by iwl4965_bg_statistics_periodic. */ static void iwl4965_bg_statistics_work(struct work_struct *work) { - struct iwl_priv *priv = container_of(work, struct iwl_priv, + struct iwl4965_priv *priv = container_of(work, struct iwl4965_priv, statistics_work); if (test_bit(STATUS_EXIT_PENDING, &priv->status)) return; mutex_lock(&priv->mutex); - iwl_send_statistics_request(priv); + iwl4965_send_statistics_request(priv); mutex_unlock(&priv->mutex); } #define CT_LIMIT_CONST 259 #define TM_CT_KILL_THRESHOLD 110 -void iwl4965_rf_kill_ct_config(struct iwl_priv *priv) +void iwl4965_rf_kill_ct_config(struct iwl4965_priv *priv) { - struct iwl_ct_kill_config cmd; + struct iwl4965_ct_kill_config cmd; u32 R1, R2, R3; u32 temp_th; u32 crit_temperature; @@ -720,7 +743,7 @@ void iwl4965_rf_kill_ct_config(struct iwl_priv *priv) int rc = 0; spin_lock_irqsave(&priv->lock, flags); - iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, + iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT); spin_unlock_irqrestore(&priv->lock, flags); @@ -738,7 +761,7 @@ void iwl4965_rf_kill_ct_config(struct iwl_priv *priv) crit_temperature = ((temp_th * (R3-R1))/CT_LIMIT_CONST) + R2; cmd.critical_temperature_R = cpu_to_le32(crit_temperature); - rc = iwl_send_cmd_pdu(priv, + rc = iwl4965_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD, sizeof(cmd), &cmd); if (rc) IWL_ERROR("REPLY_CT_KILL_CONFIG_CMD failed\n"); @@ -746,7 +769,7 @@ void iwl4965_rf_kill_ct_config(struct iwl_priv *priv) IWL_DEBUG_INFO("REPLY_CT_KILL_CONFIG_CMD succeeded\n"); } -#ifdef CONFIG_IWLWIFI_SENSITIVITY +#ifdef CONFIG_IWL4965_SENSITIVITY /* "false alarms" are signals that our DSP tries to lock onto, * but then determines that they are either noise, or transmissions @@ -756,7 +779,7 @@ void iwl4965_rf_kill_ct_config(struct iwl_priv *priv) * enough to receive all of our own network traffic, but not so * high that our DSP gets too busy trying to lock onto non-network * activity/noise. */ -static int iwl4965_sens_energy_cck(struct iwl_priv *priv, +static int iwl4965_sens_energy_cck(struct iwl4965_priv *priv, u32 norm_fa, u32 rx_enable_time, struct statistics_general_data *rx_info) @@ -782,7 +805,7 @@ static int iwl4965_sens_energy_cck(struct iwl_priv *priv, u32 false_alarms = norm_fa * 200 * 1024; u32 max_false_alarms = MAX_FA_CCK * rx_enable_time; u32 min_false_alarms = MIN_FA_CCK * rx_enable_time; - struct iwl_sensitivity_data *data = NULL; + struct iwl4965_sensitivity_data *data = NULL; data = &(priv->sensitivity_data); @@ -792,11 +815,11 @@ static int iwl4965_sens_energy_cck(struct iwl_priv *priv, * This is background noise, which may include transmissions from other * networks, measured during silence before our network's beacon */ silence_rssi_a = (u8)((rx_info->beacon_silence_rssi_a & - ALL_BAND_FILTER)>>8); + ALL_BAND_FILTER) >> 8); silence_rssi_b = (u8)((rx_info->beacon_silence_rssi_b & - ALL_BAND_FILTER)>>8); + ALL_BAND_FILTER) >> 8); silence_rssi_c = (u8)((rx_info->beacon_silence_rssi_c & - ALL_BAND_FILTER)>>8); + ALL_BAND_FILTER) >> 8); val = max(silence_rssi_b, silence_rssi_c); max_silence_rssi = max(silence_rssi_a, (u8) val); @@ -947,7 +970,7 @@ static int iwl4965_sens_energy_cck(struct iwl_priv *priv, } -static int iwl4965_sens_auto_corr_ofdm(struct iwl_priv *priv, +static int iwl4965_sens_auto_corr_ofdm(struct iwl4965_priv *priv, u32 norm_fa, u32 rx_enable_time) { @@ -955,7 +978,7 @@ static int iwl4965_sens_auto_corr_ofdm(struct iwl_priv *priv, u32 false_alarms = norm_fa * 200 * 1024; u32 max_false_alarms = MAX_FA_OFDM * rx_enable_time; u32 min_false_alarms = MIN_FA_OFDM * rx_enable_time; - struct iwl_sensitivity_data *data = NULL; + struct iwl4965_sensitivity_data *data = NULL; data = &(priv->sensitivity_data); @@ -1012,22 +1035,22 @@ static int iwl4965_sens_auto_corr_ofdm(struct iwl_priv *priv, return 0; } -static int iwl_sensitivity_callback(struct iwl_priv *priv, - struct iwl_cmd *cmd, struct sk_buff *skb) +static int iwl4965_sensitivity_callback(struct iwl4965_priv *priv, + struct iwl4965_cmd *cmd, struct sk_buff *skb) { /* We didn't cache the SKB; let the caller free it */ return 1; } /* Prepare a SENSITIVITY_CMD, send to uCode if values have changed */ -static int iwl4965_sensitivity_write(struct iwl_priv *priv, u8 flags) +static int iwl4965_sensitivity_write(struct iwl4965_priv *priv, u8 flags) { int rc = 0; - struct iwl_sensitivity_cmd cmd ; - struct iwl_sensitivity_data *data = NULL; - struct iwl_host_cmd cmd_out = { + struct iwl4965_sensitivity_cmd cmd ; + struct iwl4965_sensitivity_data *data = NULL; + struct iwl4965_host_cmd cmd_out = { .id = SENSITIVITY_CMD, - .len = sizeof(struct iwl_sensitivity_cmd), + .len = sizeof(struct iwl4965_sensitivity_cmd), .meta.flags = flags, .data = &cmd, }; @@ -1071,10 +1094,11 @@ static int iwl4965_sensitivity_write(struct iwl_priv *priv, u8 flags) data->auto_corr_cck, data->auto_corr_cck_mrc, data->nrg_th_cck); + /* Update uCode's "work" table, and copy it to DSP */ cmd.control = SENSITIVITY_CMD_CONTROL_WORK_TABLE; if (flags & CMD_ASYNC) - cmd_out.meta.u.callback = iwl_sensitivity_callback; + cmd_out.meta.u.callback = iwl4965_sensitivity_callback; /* Don't send command to uCode if nothing has changed */ if (!memcmp(&cmd.table[0], &(priv->sensitivity_tbl[0]), @@ -1087,7 +1111,7 @@ static int iwl4965_sensitivity_write(struct iwl_priv *priv, u8 flags) memcpy(&(priv->sensitivity_tbl[0]), &(cmd.table[0]), sizeof(u16)*HD_TABLE_SIZE); - rc = iwl_send_cmd(priv, &cmd_out); + rc = iwl4965_send_cmd(priv, &cmd_out); if (!rc) { IWL_DEBUG_CALIB("SENSITIVITY_CMD succeeded\n"); return rc; @@ -1096,11 +1120,11 @@ static int iwl4965_sensitivity_write(struct iwl_priv *priv, u8 flags) return 0; } -void iwl4965_init_sensitivity(struct iwl_priv *priv, u8 flags, u8 force) +void iwl4965_init_sensitivity(struct iwl4965_priv *priv, u8 flags, u8 force) { int rc = 0; int i; - struct iwl_sensitivity_data *data = NULL; + struct iwl4965_sensitivity_data *data = NULL; IWL_DEBUG_CALIB("Start iwl4965_init_sensitivity\n"); @@ -1110,7 +1134,7 @@ void iwl4965_init_sensitivity(struct iwl_priv *priv, u8 flags, u8 force) /* Clear driver's sensitivity algo data */ data = &(priv->sensitivity_data); - memset(data, 0, sizeof(struct iwl_sensitivity_data)); + memset(data, 0, sizeof(struct iwl4965_sensitivity_data)); data->num_in_cck_no_fa = 0; data->nrg_curr_state = IWL_FA_TOO_MANY; @@ -1154,21 +1178,21 @@ void iwl4965_init_sensitivity(struct iwl_priv *priv, u8 flags, u8 force) /* Reset differential Rx gains in NIC to prepare for chain noise calibration. * Called after every association, but this runs only once! * ... once chain noise is calibrated the first time, it's good forever. */ -void iwl4965_chain_noise_reset(struct iwl_priv *priv) +void iwl4965_chain_noise_reset(struct iwl4965_priv *priv) { - struct iwl_chain_noise_data *data = NULL; + struct iwl4965_chain_noise_data *data = NULL; int rc = 0; data = &(priv->chain_noise_data); - if ((data->state == IWL_CHAIN_NOISE_ALIVE) && iwl_is_associated(priv)) { - struct iwl_calibration_cmd cmd; + if ((data->state == IWL_CHAIN_NOISE_ALIVE) && iwl4965_is_associated(priv)) { + struct iwl4965_calibration_cmd cmd; memset(&cmd, 0, sizeof(cmd)); cmd.opCode = PHY_CALIBRATE_DIFF_GAIN_CMD; cmd.diff_gain_a = 0; cmd.diff_gain_b = 0; cmd.diff_gain_c = 0; - rc = iwl_send_cmd_pdu(priv, REPLY_PHY_CALIBRATION_CMD, + rc = iwl4965_send_cmd_pdu(priv, REPLY_PHY_CALIBRATION_CMD, sizeof(cmd), &cmd); msleep(4); data->state = IWL_CHAIN_NOISE_ACCUMULATE; @@ -1183,10 +1207,10 @@ void iwl4965_chain_noise_reset(struct iwl_priv *priv) * 1) Which antennas are connected. * 2) Differential rx gain settings to balance the 3 receivers. */ -static void iwl4965_noise_calibration(struct iwl_priv *priv, - struct iwl_notif_statistics *stat_resp) +static void iwl4965_noise_calibration(struct iwl4965_priv *priv, + struct iwl4965_notif_statistics *stat_resp) { - struct iwl_chain_noise_data *data = NULL; + struct iwl4965_chain_noise_data *data = NULL; int rc = 0; u32 chain_noise_a; @@ -1385,7 +1409,7 @@ static void iwl4965_noise_calibration(struct iwl_priv *priv, /* Differential gain gets sent to uCode only once */ if (!data->radio_write) { - struct iwl_calibration_cmd cmd; + struct iwl4965_calibration_cmd cmd; data->radio_write = 1; memset(&cmd, 0, sizeof(cmd)); @@ -1393,7 +1417,7 @@ static void iwl4965_noise_calibration(struct iwl_priv *priv, cmd.diff_gain_a = data->delta_gain_code[0]; cmd.diff_gain_b = data->delta_gain_code[1]; cmd.diff_gain_c = data->delta_gain_code[2]; - rc = iwl_send_cmd_pdu(priv, REPLY_PHY_CALIBRATION_CMD, + rc = iwl4965_send_cmd_pdu(priv, REPLY_PHY_CALIBRATION_CMD, sizeof(cmd), &cmd); if (rc) IWL_DEBUG_CALIB("fail sending cmd " @@ -1416,8 +1440,8 @@ static void iwl4965_noise_calibration(struct iwl_priv *priv, return; } -static void iwl4965_sensitivity_calibration(struct iwl_priv *priv, - struct iwl_notif_statistics *resp) +static void iwl4965_sensitivity_calibration(struct iwl4965_priv *priv, + struct iwl4965_notif_statistics *resp) { int rc = 0; u32 rx_enable_time; @@ -1427,7 +1451,7 @@ static void iwl4965_sensitivity_calibration(struct iwl_priv *priv, u32 bad_plcp_ofdm; u32 norm_fa_ofdm; u32 norm_fa_cck; - struct iwl_sensitivity_data *data = NULL; + struct iwl4965_sensitivity_data *data = NULL; struct statistics_rx_non_phy *rx_info = &(resp->rx.general); struct statistics_rx *statistics = &(resp->rx); unsigned long flags; @@ -1435,7 +1459,7 @@ static void iwl4965_sensitivity_calibration(struct iwl_priv *priv, data = &(priv->sensitivity_data); - if (!iwl_is_associated(priv)) { + if (!iwl4965_is_associated(priv)) { IWL_DEBUG_CALIB("<< - not associated\n"); return; } @@ -1523,7 +1547,7 @@ static void iwl4965_sensitivity_calibration(struct iwl_priv *priv, static void iwl4965_bg_sensitivity_work(struct work_struct *work) { - struct iwl_priv *priv = container_of(work, struct iwl_priv, + struct iwl4965_priv *priv = container_of(work, struct iwl4965_priv, sensitivity_work); mutex_lock(&priv->mutex); @@ -1549,11 +1573,11 @@ static void iwl4965_bg_sensitivity_work(struct work_struct *work) mutex_unlock(&priv->mutex); return; } -#endif /*CONFIG_IWLWIFI_SENSITIVITY*/ +#endif /*CONFIG_IWL4965_SENSITIVITY*/ static void iwl4965_bg_txpower_work(struct work_struct *work) { - struct iwl_priv *priv = container_of(work, struct iwl_priv, + struct iwl4965_priv *priv = container_of(work, struct iwl4965_priv, txpower_work); /* If a scan happened to start before we got here @@ -1569,7 +1593,7 @@ static void iwl4965_bg_txpower_work(struct work_struct *work) /* Regardless of if we are assocaited, we must reconfigure the * TX power since frames can be sent on non-radar channels while * not associated */ - iwl_hw_reg_send_txpower(priv); + iwl4965_hw_reg_send_txpower(priv); /* Update last_temperature to keep is_calib_needed from running * when it isn't needed... */ @@ -1581,24 +1605,31 @@ static void iwl4965_bg_txpower_work(struct work_struct *work) /* * Acquire priv->lock before calling this function ! */ -static void iwl4965_set_wr_ptrs(struct iwl_priv *priv, int txq_id, u32 index) +static void iwl4965_set_wr_ptrs(struct iwl4965_priv *priv, int txq_id, u32 index) { - iwl_write_restricted(priv, HBUS_TARG_WRPTR, + iwl4965_write_direct32(priv, HBUS_TARG_WRPTR, (index & 0xff) | (txq_id << 8)); - iwl_write_restricted_reg(priv, SCD_QUEUE_RDPTR(txq_id), index); + iwl4965_write_prph(priv, KDR_SCD_QUEUE_RDPTR(txq_id), index); } -/* - * Acquire priv->lock before calling this function ! +/** + * iwl4965_tx_queue_set_status - (optionally) start Tx/Cmd queue + * @tx_fifo_id: Tx DMA/FIFO channel (range 0-7) that the queue will feed + * @scd_retry: (1) Indicates queue will be used in aggregation mode + * + * NOTE: Acquire priv->lock before calling this function ! */ -static void iwl4965_tx_queue_set_status(struct iwl_priv *priv, - struct iwl_tx_queue *txq, +static void iwl4965_tx_queue_set_status(struct iwl4965_priv *priv, + struct iwl4965_tx_queue *txq, int tx_fifo_id, int scd_retry) { int txq_id = txq->q.id; + + /* Find out whether to activate Tx queue */ int active = test_bit(txq_id, &priv->txq_ctx_active_msk)?1:0; - iwl_write_restricted_reg(priv, SCD_QUEUE_STATUS_BITS(txq_id), + /* Set up and activate */ + iwl4965_write_prph(priv, KDR_SCD_QUEUE_STATUS_BITS(txq_id), (active << SCD_QUEUE_STTS_REG_POS_ACTIVE) | (tx_fifo_id << SCD_QUEUE_STTS_REG_POS_TXF) | (scd_retry << SCD_QUEUE_STTS_REG_POS_WSL) | @@ -1608,7 +1639,7 @@ static void iwl4965_tx_queue_set_status(struct iwl_priv *priv, txq->sched_retry = scd_retry; IWL_DEBUG_INFO("%s %s Queue %d on AC %d\n", - active ? "Activete" : "Deactivate", + active ? "Activate" : "Deactivate", scd_retry ? "BA" : "AC", txq_id, tx_fifo_id); } @@ -1622,17 +1653,17 @@ static const u16 default_queue_to_tx_fifo[] = { IWL_TX_FIFO_HCCA_2 }; -static inline void iwl4965_txq_ctx_activate(struct iwl_priv *priv, int txq_id) +static inline void iwl4965_txq_ctx_activate(struct iwl4965_priv *priv, int txq_id) { set_bit(txq_id, &priv->txq_ctx_active_msk); } -static inline void iwl4965_txq_ctx_deactivate(struct iwl_priv *priv, int txq_id) +static inline void iwl4965_txq_ctx_deactivate(struct iwl4965_priv *priv, int txq_id) { clear_bit(txq_id, &priv->txq_ctx_active_msk); } -int iwl4965_alive_notify(struct iwl_priv *priv) +int iwl4965_alive_notify(struct iwl4965_priv *priv) { u32 a; int i = 0; @@ -1641,45 +1672,55 @@ int iwl4965_alive_notify(struct iwl_priv *priv) spin_lock_irqsave(&priv->lock, flags); -#ifdef CONFIG_IWLWIFI_SENSITIVITY +#ifdef CONFIG_IWL4965_SENSITIVITY memset(&(priv->sensitivity_data), 0, - sizeof(struct iwl_sensitivity_data)); + sizeof(struct iwl4965_sensitivity_data)); memset(&(priv->chain_noise_data), 0, - sizeof(struct iwl_chain_noise_data)); + sizeof(struct iwl4965_chain_noise_data)); for (i = 0; i < NUM_RX_CHAINS; i++) priv->chain_noise_data.delta_gain_code[i] = CHAIN_NOISE_DELTA_GAIN_INIT_VAL; -#endif /* CONFIG_IWLWIFI_SENSITIVITY*/ - rc = iwl_grab_restricted_access(priv); +#endif /* CONFIG_IWL4965_SENSITIVITY*/ + rc = iwl4965_grab_nic_access(priv); if (rc) { spin_unlock_irqrestore(&priv->lock, flags); return rc; } - priv->scd_base_addr = iwl_read_restricted_reg(priv, SCD_SRAM_BASE_ADDR); + /* Clear 4965's internal Tx Scheduler data base */ + priv->scd_base_addr = iwl4965_read_prph(priv, KDR_SCD_SRAM_BASE_ADDR); a = priv->scd_base_addr + SCD_CONTEXT_DATA_OFFSET; for (; a < priv->scd_base_addr + SCD_TX_STTS_BITMAP_OFFSET; a += 4) - iwl_write_restricted_mem(priv, a, 0); + iwl4965_write_targ_mem(priv, a, 0); for (; a < priv->scd_base_addr + SCD_TRANSLATE_TBL_OFFSET; a += 4) - iwl_write_restricted_mem(priv, a, 0); + iwl4965_write_targ_mem(priv, a, 0); for (; a < sizeof(u16) * priv->hw_setting.max_txq_num; a += 4) - iwl_write_restricted_mem(priv, a, 0); + iwl4965_write_targ_mem(priv, a, 0); - iwl_write_restricted_reg(priv, SCD_DRAM_BASE_ADDR, + /* Tel 4965 where to find Tx byte count tables */ + iwl4965_write_prph(priv, KDR_SCD_DRAM_BASE_ADDR, (priv->hw_setting.shared_phys + - offsetof(struct iwl_shared, queues_byte_cnt_tbls)) >> 10); - iwl_write_restricted_reg(priv, SCD_QUEUECHAIN_SEL, 0); + offsetof(struct iwl4965_shared, queues_byte_cnt_tbls)) >> 10); - /* initiate the queues */ + /* Disable chain mode for all queues */ + iwl4965_write_prph(priv, KDR_SCD_QUEUECHAIN_SEL, 0); + + /* Initialize each Tx queue (including the command queue) */ for (i = 0; i < priv->hw_setting.max_txq_num; i++) { - iwl_write_restricted_reg(priv, SCD_QUEUE_RDPTR(i), 0); - iwl_write_restricted(priv, HBUS_TARG_WRPTR, 0 | (i << 8)); - iwl_write_restricted_mem(priv, priv->scd_base_addr + + + /* TFD circular buffer read/write indexes */ + iwl4965_write_prph(priv, KDR_SCD_QUEUE_RDPTR(i), 0); + iwl4965_write_direct32(priv, HBUS_TARG_WRPTR, 0 | (i << 8)); + + /* Max Tx Window size for Scheduler-ACK mode */ + iwl4965_write_targ_mem(priv, priv->scd_base_addr + SCD_CONTEXT_QUEUE_OFFSET(i), (SCD_WIN_SIZE << SCD_QUEUE_CTX_REG1_WIN_SIZE_POS) & SCD_QUEUE_CTX_REG1_WIN_SIZE_MSK); - iwl_write_restricted_mem(priv, priv->scd_base_addr + + + /* Frame limit */ + iwl4965_write_targ_mem(priv, priv->scd_base_addr + SCD_CONTEXT_QUEUE_OFFSET(i) + sizeof(u32), (SCD_FRAME_LIMIT << @@ -1687,87 +1728,98 @@ int iwl4965_alive_notify(struct iwl_priv *priv) SCD_QUEUE_CTX_REG2_FRAME_LIMIT_MSK); } - iwl_write_restricted_reg(priv, SCD_INTERRUPT_MASK, + iwl4965_write_prph(priv, KDR_SCD_INTERRUPT_MASK, (1 << priv->hw_setting.max_txq_num) - 1); - iwl_write_restricted_reg(priv, SCD_TXFACT, + /* Activate all Tx DMA/FIFO channels */ + iwl4965_write_prph(priv, KDR_SCD_TXFACT, SCD_TXFACT_REG_TXFIFO_MASK(0, 7)); iwl4965_set_wr_ptrs(priv, IWL_CMD_QUEUE_NUM, 0); - /* map qos queues to fifos one-to-one */ + + /* Map each Tx/cmd queue to its corresponding fifo */ for (i = 0; i < ARRAY_SIZE(default_queue_to_tx_fifo); i++) { int ac = default_queue_to_tx_fifo[i]; iwl4965_txq_ctx_activate(priv, i); iwl4965_tx_queue_set_status(priv, &priv->txq[i], ac, 0); } - iwl_release_restricted_access(priv); + iwl4965_release_nic_access(priv); spin_unlock_irqrestore(&priv->lock, flags); return 0; } -int iwl_hw_set_hw_setting(struct iwl_priv *priv) +/** + * iwl4965_hw_set_hw_setting + * + * Called when initializing driver + */ +int iwl4965_hw_set_hw_setting(struct iwl4965_priv *priv) { + /* Allocate area for Tx byte count tables and Rx queue status */ priv->hw_setting.shared_virt = pci_alloc_consistent(priv->pci_dev, - sizeof(struct iwl_shared), + sizeof(struct iwl4965_shared), &priv->hw_setting.shared_phys); if (!priv->hw_setting.shared_virt) return -1; - memset(priv->hw_setting.shared_virt, 0, sizeof(struct iwl_shared)); + memset(priv->hw_setting.shared_virt, 0, sizeof(struct iwl4965_shared)); - priv->hw_setting.max_txq_num = iwl_param_queues_num; + priv->hw_setting.max_txq_num = iwl4965_param_queues_num; priv->hw_setting.ac_queue_count = AC_NUM; - - priv->hw_setting.cck_flag = RATE_MCS_CCK_MSK; - priv->hw_setting.tx_cmd_len = sizeof(struct iwl_tx_cmd); + priv->hw_setting.tx_cmd_len = sizeof(struct iwl4965_tx_cmd); priv->hw_setting.max_rxq_size = RX_QUEUE_SIZE; priv->hw_setting.max_rxq_log = RX_QUEUE_SIZE_LOG; - + if (iwl4965_param_amsdu_size_8K) + priv->hw_setting.rx_buf_size = IWL_RX_BUF_SIZE_8K; + else + priv->hw_setting.rx_buf_size = IWL_RX_BUF_SIZE_4K; + priv->hw_setting.max_pkt_size = priv->hw_setting.rx_buf_size - 256; priv->hw_setting.max_stations = IWL4965_STATION_COUNT; priv->hw_setting.bcast_sta_id = IWL4965_BROADCAST_ID; return 0; } /** - * iwl_hw_txq_ctx_free - Free TXQ Context + * iwl4965_hw_txq_ctx_free - Free TXQ Context * * Destroy all TX DMA queues and structures */ -void iwl_hw_txq_ctx_free(struct iwl_priv *priv) +void iwl4965_hw_txq_ctx_free(struct iwl4965_priv *priv) { int txq_id; /* Tx queues */ for (txq_id = 0; txq_id < priv->hw_setting.max_txq_num; txq_id++) - iwl_tx_queue_free(priv, &priv->txq[txq_id]); + iwl4965_tx_queue_free(priv, &priv->txq[txq_id]); + /* Keep-warm buffer */ iwl4965_kw_free(priv); } /** - * iwl_hw_txq_free_tfd - Free one TFD, those at index [txq->q.last_used] + * iwl4965_hw_txq_free_tfd - Free all chunks referenced by TFD [txq->q.read_ptr] * - * Does NOT advance any indexes + * Does NOT advance any TFD circular buffer read/write indexes + * Does NOT free the TFD itself (which is within circular buffer) */ -int iwl_hw_txq_free_tfd(struct iwl_priv *priv, struct iwl_tx_queue *txq) +int iwl4965_hw_txq_free_tfd(struct iwl4965_priv *priv, struct iwl4965_tx_queue *txq) { - struct iwl_tfd_frame *bd_tmp = (struct iwl_tfd_frame *)&txq->bd[0]; - struct iwl_tfd_frame *bd = &bd_tmp[txq->q.last_used]; + struct iwl4965_tfd_frame *bd_tmp = (struct iwl4965_tfd_frame *)&txq->bd[0]; + struct iwl4965_tfd_frame *bd = &bd_tmp[txq->q.read_ptr]; struct pci_dev *dev = priv->pci_dev; int i; int counter = 0; int index, is_odd; - /* classify bd */ + /* Host command buffers stay mapped in memory, nothing to clean */ if (txq->q.id == IWL_CMD_QUEUE_NUM) - /* nothing to cleanup after for host commands */ return 0; - /* sanity check */ + /* Sanity check on number of chunks */ counter = IWL_GET_BITS(*bd, num_tbs); if (counter > MAX_NUM_OF_TBS) { IWL_ERROR("Too many chunks: %i\n", counter); @@ -1775,8 +1827,8 @@ int iwl_hw_txq_free_tfd(struct iwl_priv *priv, struct iwl_tx_queue *txq) return 0; } - /* unmap chunks if any */ - + /* Unmap chunks, if any. + * TFD info for odd chunks is different format than for even chunks. */ for (i = 0; i < counter; i++) { index = i / 2; is_odd = i & 0x1; @@ -1796,19 +1848,20 @@ int iwl_hw_txq_free_tfd(struct iwl_priv *priv, struct iwl_tx_queue *txq) IWL_GET_BITS(bd->pa[index], tb1_len), PCI_DMA_TODEVICE); - if (txq->txb[txq->q.last_used].skb[i]) { - struct sk_buff *skb = txq->txb[txq->q.last_used].skb[i]; + /* Free SKB, if any, for this chunk */ + if (txq->txb[txq->q.read_ptr].skb[i]) { + struct sk_buff *skb = txq->txb[txq->q.read_ptr].skb[i]; dev_kfree_skb(skb); - txq->txb[txq->q.last_used].skb[i] = NULL; + txq->txb[txq->q.read_ptr].skb[i] = NULL; } } return 0; } -int iwl_hw_reg_set_txpower(struct iwl_priv *priv, s8 power) +int iwl4965_hw_reg_set_txpower(struct iwl4965_priv *priv, s8 power) { - IWL_ERROR("TODO: Implement iwl_hw_reg_set_txpower!\n"); + IWL_ERROR("TODO: Implement iwl4965_hw_reg_set_txpower!\n"); return -EINVAL; } @@ -1830,6 +1883,17 @@ static s32 iwl4965_math_div_round(s32 num, s32 denom, s32 *res) return 1; } +/** + * iwl4965_get_voltage_compensation - Power supply voltage comp for txpower + * + * Determines power supply voltage compensation for txpower calculations. + * Returns number of 1/2-dB steps to subtract from gain table index, + * to compensate for difference between power supply voltage during + * factory measurements, vs. current power supply voltage. + * + * Voltage indication is higher for lower voltage. + * Lower voltage requires more gain (lower gain table index). + */ static s32 iwl4965_get_voltage_compensation(s32 eeprom_voltage, s32 current_voltage) { @@ -1850,12 +1914,12 @@ static s32 iwl4965_get_voltage_compensation(s32 eeprom_voltage, return comp; } -static const struct iwl_channel_info * -iwl4965_get_channel_txpower_info(struct iwl_priv *priv, u8 phymode, u16 channel) +static const struct iwl4965_channel_info * +iwl4965_get_channel_txpower_info(struct iwl4965_priv *priv, u8 phymode, u16 channel) { - const struct iwl_channel_info *ch_info; + const struct iwl4965_channel_info *ch_info; - ch_info = iwl_get_channel_info(priv, phymode, channel); + ch_info = iwl4965_get_channel_info(priv, phymode, channel); if (!is_channel_valid(ch_info)) return NULL; @@ -1889,7 +1953,7 @@ static s32 iwl4965_get_tx_atten_grp(u16 channel) return -1; } -static u32 iwl4965_get_sub_band(const struct iwl_priv *priv, u32 channel) +static u32 iwl4965_get_sub_band(const struct iwl4965_priv *priv, u32 channel) { s32 b = -1; @@ -1917,15 +1981,23 @@ static s32 iwl4965_interpolate_value(s32 x, s32 x1, s32 y1, s32 x2, s32 y2) } } -static int iwl4965_interpolate_chan(struct iwl_priv *priv, u32 channel, - struct iwl_eeprom_calib_ch_info *chan_info) +/** + * iwl4965_interpolate_chan - Interpolate factory measurements for one channel + * + * Interpolates factory measurements from the two sample channels within a + * sub-band, to apply to channel of interest. Interpolation is proportional to + * differences in channel frequencies, which is proportional to differences + * in channel number. + */ +static int iwl4965_interpolate_chan(struct iwl4965_priv *priv, u32 channel, + struct iwl4965_eeprom_calib_ch_info *chan_info) { s32 s = -1; u32 c; u32 m; - const struct iwl_eeprom_calib_measure *m1; - const struct iwl_eeprom_calib_measure *m2; - struct iwl_eeprom_calib_measure *omeas; + const struct iwl4965_eeprom_calib_measure *m1; + const struct iwl4965_eeprom_calib_measure *m2; + struct iwl4965_eeprom_calib_measure *omeas; u32 ch_i1; u32 ch_i2; @@ -2000,7 +2072,7 @@ static s32 back_off_table[] = { /* Thermal compensation values for txpower for various frequency ranges ... * ratios from 3:1 to 4.5:1 of degrees (Celsius) per half-dB gain adjust */ -static struct iwl_txpower_comp_entry { +static struct iwl4965_txpower_comp_entry { s32 degrees_per_05db_a; s32 degrees_per_05db_a_denom; } tx_power_cmp_tble[CALIB_CH_GROUP_MAX] = { @@ -2250,9 +2322,9 @@ static const struct gain_entry gain_table[2][108] = { } }; -static int iwl4965_fill_txpower_tbl(struct iwl_priv *priv, u8 band, u16 channel, +static int iwl4965_fill_txpower_tbl(struct iwl4965_priv *priv, u8 band, u16 channel, u8 is_fat, u8 ctrl_chan_high, - struct iwl_tx_power_db *tx_power_tbl) + struct iwl4965_tx_power_db *tx_power_tbl) { u8 saturation_power; s32 target_power; @@ -2264,9 +2336,9 @@ static int iwl4965_fill_txpower_tbl(struct iwl_priv *priv, u8 band, u16 channel, s32 txatten_grp = CALIB_CH_GROUP_MAX; int i; int c; - const struct iwl_channel_info *ch_info = NULL; - struct iwl_eeprom_calib_ch_info ch_eeprom_info; - const struct iwl_eeprom_calib_measure *measurement; + const struct iwl4965_channel_info *ch_info = NULL; + struct iwl4965_eeprom_calib_ch_info ch_eeprom_info; + const struct iwl4965_eeprom_calib_measure *measurement; s16 voltage; s32 init_voltage; s32 voltage_compensation; @@ -2405,7 +2477,7 @@ static int iwl4965_fill_txpower_tbl(struct iwl_priv *priv, u8 band, u16 channel, /* for each of 33 bit-rates (including 1 for CCK) */ for (i = 0; i < POWER_TABLE_NUM_ENTRIES; i++) { u8 is_mimo_rate; - union iwl_tx_power_dual_stream tx_power; + union iwl4965_tx_power_dual_stream tx_power; /* for mimo, reduce each chain's txpower by half * (3dB, 6 steps), so total output power is regulatory @@ -2502,14 +2574,14 @@ static int iwl4965_fill_txpower_tbl(struct iwl_priv *priv, u8 band, u16 channel, } /** - * iwl_hw_reg_send_txpower - Configure the TXPOWER level user limit + * iwl4965_hw_reg_send_txpower - Configure the TXPOWER level user limit * * Uses the active RXON for channel, band, and characteristics (fat, high) * The power limit is taken from priv->user_txpower_limit. */ -int iwl_hw_reg_send_txpower(struct iwl_priv *priv) +int iwl4965_hw_reg_send_txpower(struct iwl4965_priv *priv) { - struct iwl_txpowertable_cmd cmd = { 0 }; + struct iwl4965_txpowertable_cmd cmd = { 0 }; int rc = 0; u8 band = 0; u8 is_fat = 0; @@ -2541,23 +2613,23 @@ int iwl_hw_reg_send_txpower(struct iwl_priv *priv) if (rc) return rc; - rc = iwl_send_cmd_pdu(priv, REPLY_TX_PWR_TABLE_CMD, sizeof(cmd), &cmd); + rc = iwl4965_send_cmd_pdu(priv, REPLY_TX_PWR_TABLE_CMD, sizeof(cmd), &cmd); return rc; } -int iwl_hw_channel_switch(struct iwl_priv *priv, u16 channel) +int iwl4965_hw_channel_switch(struct iwl4965_priv *priv, u16 channel) { int rc; u8 band = 0; u8 is_fat = 0; u8 ctrl_chan_high = 0; - struct iwl_channel_switch_cmd cmd = { 0 }; - const struct iwl_channel_info *ch_info; + struct iwl4965_channel_switch_cmd cmd = { 0 }; + const struct iwl4965_channel_info *ch_info; band = ((priv->phymode == MODE_IEEE80211B) || (priv->phymode == MODE_IEEE80211G)); - ch_info = iwl_get_channel_info(priv, priv->phymode, channel); + ch_info = iwl4965_get_channel_info(priv, priv->phymode, channel); is_fat = is_fat_channel(priv->staging_rxon.flags); @@ -2583,32 +2655,36 @@ int iwl_hw_channel_switch(struct iwl_priv *priv, u16 channel) return rc; } - rc = iwl_send_cmd_pdu(priv, REPLY_CHANNEL_SWITCH, sizeof(cmd), &cmd); + rc = iwl4965_send_cmd_pdu(priv, REPLY_CHANNEL_SWITCH, sizeof(cmd), &cmd); return rc; } #define RTS_HCCA_RETRY_LIMIT 3 #define RTS_DFAULT_RETRY_LIMIT 60 -void iwl_hw_build_tx_cmd_rate(struct iwl_priv *priv, - struct iwl_cmd *cmd, +void iwl4965_hw_build_tx_cmd_rate(struct iwl4965_priv *priv, + struct iwl4965_cmd *cmd, struct ieee80211_tx_control *ctrl, struct ieee80211_hdr *hdr, int sta_id, int is_hcca) { - u8 rate; + struct iwl4965_tx_cmd *tx = &cmd->cmd.tx; u8 rts_retry_limit = 0; u8 data_retry_limit = 0; - __le32 tx_flags; u16 fc = le16_to_cpu(hdr->frame_control); + u8 rate_plcp; + u16 rate_flags = 0; + int rate_idx = min(ctrl->tx_rate & 0xffff, IWL_RATE_COUNT - 1); - tx_flags = cmd->cmd.tx.tx_flags; - - rate = iwl_rates[ctrl->tx_rate].plcp; + rate_plcp = iwl4965_rates[rate_idx].plcp; rts_retry_limit = (is_hcca) ? RTS_HCCA_RETRY_LIMIT : RTS_DFAULT_RETRY_LIMIT; + if ((rate_idx >= IWL_FIRST_CCK_RATE) && (rate_idx <= IWL_LAST_CCK_RATE)) + rate_flags |= RATE_MCS_CCK_MSK; + + if (ieee80211_is_probe_response(fc)) { data_retry_limit = 3; if (data_retry_limit < rts_retry_limit) @@ -2619,44 +2695,56 @@ void iwl_hw_build_tx_cmd_rate(struct iwl_priv *priv, if (priv->data_retry_limit != -1) data_retry_limit = priv->data_retry_limit; - if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) { + + if (ieee80211_is_data(fc)) { + tx->initial_rate_index = 0; + tx->tx_flags |= TX_CMD_FLG_STA_RATE_MSK; + } else { switch (fc & IEEE80211_FCTL_STYPE) { case IEEE80211_STYPE_AUTH: case IEEE80211_STYPE_DEAUTH: case IEEE80211_STYPE_ASSOC_REQ: case IEEE80211_STYPE_REASSOC_REQ: - if (tx_flags & TX_CMD_FLG_RTS_MSK) { - tx_flags &= ~TX_CMD_FLG_RTS_MSK; - tx_flags |= TX_CMD_FLG_CTS_MSK; + if (tx->tx_flags & TX_CMD_FLG_RTS_MSK) { + tx->tx_flags &= ~TX_CMD_FLG_RTS_MSK; + tx->tx_flags |= TX_CMD_FLG_CTS_MSK; } break; default: break; } + + /* Alternate between antenna A and B for successive frames */ + if (priv->use_ant_b_for_management_frame) { + priv->use_ant_b_for_management_frame = 0; + rate_flags |= RATE_MCS_ANT_B_MSK; + } else { + priv->use_ant_b_for_management_frame = 1; + rate_flags |= RATE_MCS_ANT_A_MSK; + } } - cmd->cmd.tx.rts_retry_limit = rts_retry_limit; - cmd->cmd.tx.data_retry_limit = data_retry_limit; - cmd->cmd.tx.rate_n_flags = iwl_hw_set_rate_n_flags(rate, 0); - cmd->cmd.tx.tx_flags = tx_flags; + tx->rts_retry_limit = rts_retry_limit; + tx->data_retry_limit = data_retry_limit; + tx->rate_n_flags = iwl4965_hw_set_rate_n_flags(rate_plcp, rate_flags); } -int iwl_hw_get_rx_read(struct iwl_priv *priv) +int iwl4965_hw_get_rx_read(struct iwl4965_priv *priv) { - struct iwl_shared *shared_data = priv->hw_setting.shared_virt; + struct iwl4965_shared *shared_data = priv->hw_setting.shared_virt; return IWL_GET_BITS(*shared_data, rb_closed_stts_rb_num); } -int iwl_hw_get_temperature(struct iwl_priv *priv) +int iwl4965_hw_get_temperature(struct iwl4965_priv *priv) { return priv->temperature; } -unsigned int iwl_hw_get_beacon_cmd(struct iwl_priv *priv, - struct iwl_frame *frame, u8 rate) +unsigned int iwl4965_hw_get_beacon_cmd(struct iwl4965_priv *priv, + struct iwl4965_frame *frame, u8 rate) { - struct iwl_tx_beacon_cmd *tx_beacon_cmd; + struct iwl4965_tx_beacon_cmd *tx_beacon_cmd; unsigned int frame_size; tx_beacon_cmd = &frame->u.beacon; @@ -2665,9 +2753,9 @@ unsigned int iwl_hw_get_beacon_cmd(struct iwl_priv *priv, tx_beacon_cmd->tx.sta_id = IWL4965_BROADCAST_ID; tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE; - frame_size = iwl_fill_beacon_frame(priv, + frame_size = iwl4965_fill_beacon_frame(priv, tx_beacon_cmd->frame, - BROADCAST_ADDR, + iwl4965_broadcast_addr, sizeof(frame->u) - sizeof(*tx_beacon_cmd)); BUG_ON(frame_size > MAX_MPDU_SIZE); @@ -2675,53 +2763,59 @@ unsigned int iwl_hw_get_beacon_cmd(struct iwl_priv *priv, if ((rate == IWL_RATE_1M_PLCP) || (rate >= IWL_RATE_2M_PLCP)) tx_beacon_cmd->tx.rate_n_flags = - iwl_hw_set_rate_n_flags(rate, RATE_MCS_CCK_MSK); + iwl4965_hw_set_rate_n_flags(rate, RATE_MCS_CCK_MSK); else tx_beacon_cmd->tx.rate_n_flags = - iwl_hw_set_rate_n_flags(rate, 0); + iwl4965_hw_set_rate_n_flags(rate, 0); tx_beacon_cmd->tx.tx_flags = (TX_CMD_FLG_SEQ_CTL_MSK | TX_CMD_FLG_TSF_MSK | TX_CMD_FLG_STA_RATE_MSK); return (sizeof(*tx_beacon_cmd) + frame_size); } -int iwl_hw_tx_queue_init(struct iwl_priv *priv, struct iwl_tx_queue *txq) +/* + * Tell 4965 where to find circular buffer of Tx Frame Descriptors for + * given Tx queue, and enable the DMA channel used for that queue. + * + * 4965 supports up to 16 Tx queues in DRAM, mapped to up to 8 Tx DMA + * channels supported in hardware. + */ +int iwl4965_hw_tx_queue_init(struct iwl4965_priv *priv, struct iwl4965_tx_queue *txq) { int rc; unsigned long flags; int txq_id = txq->q.id; spin_lock_irqsave(&priv->lock, flags); - rc = iwl_grab_restricted_access(priv); + rc = iwl4965_grab_nic_access(priv); if (rc) { spin_unlock_irqrestore(&priv->lock, flags); return rc; } - iwl_write_restricted(priv, FH_MEM_CBBC_QUEUE(txq_id), + /* Circular buffer (TFD queue in DRAM) physical base address */ + iwl4965_write_direct32(priv, FH_MEM_CBBC_QUEUE(txq_id), txq->q.dma_addr >> 8); - iwl_write_restricted( + + /* Enable DMA channel, using same id as for TFD queue */ + iwl4965_write_direct32( priv, IWL_FH_TCSR_CHNL_TX_CONFIG_REG(txq_id), IWL_FH_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_ENABLE | IWL_FH_TCSR_TX_CONFIG_REG_VAL_DMA_CREDIT_ENABLE_VAL); - iwl_release_restricted_access(priv); + iwl4965_release_nic_access(priv); spin_unlock_irqrestore(&priv->lock, flags); return 0; } -static inline u8 iwl4965_get_dma_hi_address(dma_addr_t addr) -{ - return sizeof(addr) > sizeof(u32) ? (addr >> 16) >> 16 : 0; -} - -int iwl_hw_txq_attach_buf_to_tfd(struct iwl_priv *priv, void *ptr, +int iwl4965_hw_txq_attach_buf_to_tfd(struct iwl4965_priv *priv, void *ptr, dma_addr_t addr, u16 len) { int index, is_odd; - struct iwl_tfd_frame *tfd = ptr; + struct iwl4965_tfd_frame *tfd = ptr; u32 num_tbs = IWL_GET_BITS(*tfd, num_tbs); + /* Each TFD can point to a maximum 20 Tx buffers */ if ((num_tbs >= MAX_NUM_OF_TBS) || (num_tbs < 0)) { IWL_ERROR("Error can not send more than %d chunks\n", MAX_NUM_OF_TBS); @@ -2734,7 +2828,7 @@ int iwl_hw_txq_attach_buf_to_tfd(struct iwl_priv *priv, void *ptr, if (!is_odd) { tfd->pa[index].tb1_addr = cpu_to_le32(addr); IWL_SET_BITS(tfd->pa[index], tb1_addr_hi, - iwl4965_get_dma_hi_address(addr)); + iwl_get_dma_hi_address(addr)); IWL_SET_BITS(tfd->pa[index], tb1_len, len); } else { IWL_SET_BITS(tfd->pa[index], tb2_addr_lo16, @@ -2748,7 +2842,7 @@ int iwl_hw_txq_attach_buf_to_tfd(struct iwl_priv *priv, void *ptr, return 0; } -void iwl_hw_card_show_info(struct iwl_priv *priv) +static void iwl4965_hw_card_show_info(struct iwl4965_priv *priv) { u16 hw_version = priv->eeprom.board_revision_4965; @@ -2763,32 +2857,41 @@ void iwl_hw_card_show_info(struct iwl_priv *priv) #define IWL_TX_CRC_SIZE 4 #define IWL_TX_DELIMITER_SIZE 4 -int iwl4965_tx_queue_update_wr_ptr(struct iwl_priv *priv, - struct iwl_tx_queue *txq, u16 byte_cnt) +/** + * iwl4965_tx_queue_update_wr_ptr - Set up entry in Tx byte-count array + */ +int iwl4965_tx_queue_update_wr_ptr(struct iwl4965_priv *priv, + struct iwl4965_tx_queue *txq, u16 byte_cnt) { int len; int txq_id = txq->q.id; - struct iwl_shared *shared_data = priv->hw_setting.shared_virt; + struct iwl4965_shared *shared_data = priv->hw_setting.shared_virt; if (txq->need_update == 0) return 0; len = byte_cnt + IWL_TX_CRC_SIZE + IWL_TX_DELIMITER_SIZE; + /* Set up byte count within first 256 entries */ IWL_SET_BITS16(shared_data->queues_byte_cnt_tbls[txq_id]. - tfd_offset[txq->q.first_empty], byte_cnt, len); + tfd_offset[txq->q.write_ptr], byte_cnt, len); - if (txq->q.first_empty < IWL4965_MAX_WIN_SIZE) + /* If within first 64 entries, duplicate at end */ + if (txq->q.write_ptr < IWL4965_MAX_WIN_SIZE) IWL_SET_BITS16(shared_data->queues_byte_cnt_tbls[txq_id]. - tfd_offset[IWL4965_QUEUE_SIZE + txq->q.first_empty], + tfd_offset[IWL4965_QUEUE_SIZE + txq->q.write_ptr], byte_cnt, len); return 0; } -/* Set up Rx receiver/antenna/chain usage in "staging" RXON image. - * This should not be used for scan command ... it puts data in wrong place. */ -void iwl4965_set_rxon_chain(struct iwl_priv *priv) +/** + * iwl4965_set_rxon_chain - Set up Rx chain usage in "staging" RXON image + * + * Selects how many and which Rx receivers/antennas/chains to use. + * This should not be used for scan command ... it puts data in wrong place. + */ +void iwl4965_set_rxon_chain(struct iwl4965_priv *priv) { u8 is_single = is_single_stream(priv); u8 idle_state, rx_state; @@ -2819,19 +2922,19 @@ void iwl4965_set_rxon_chain(struct iwl_priv *priv) IWL_DEBUG_ASSOC("rx chain %X\n", priv->staging_rxon.rx_chain); } -#ifdef CONFIG_IWLWIFI_HT -#ifdef CONFIG_IWLWIFI_HT_AGG +#ifdef CONFIG_IWL4965_HT +#ifdef CONFIG_IWL4965_HT_AGG /* get the traffic load value for tid */ -static u32 iwl4965_tl_get_load(struct iwl_priv *priv, u8 tid) +static u32 iwl4965_tl_get_load(struct iwl4965_priv *priv, u8 tid) { u32 load = 0; u32 current_time = jiffies_to_msecs(jiffies); u32 time_diff; s32 index; unsigned long flags; - struct iwl_traffic_load *tid_ptr = NULL; + struct iwl4965_traffic_load *tid_ptr = NULL; if (tid >= TID_MAX_LOAD_COUNT) return 0; @@ -2872,13 +2975,13 @@ static u32 iwl4965_tl_get_load(struct iwl_priv *priv, u8 tid) increment traffic load value for tid and also remove any old values if passed the certian time period */ -static void iwl4965_tl_add_packet(struct iwl_priv *priv, u8 tid) +static void iwl4965_tl_add_packet(struct iwl4965_priv *priv, u8 tid) { u32 current_time = jiffies_to_msecs(jiffies); u32 time_diff; s32 index; unsigned long flags; - struct iwl_traffic_load *tid_ptr = NULL; + struct iwl4965_traffic_load *tid_ptr = NULL; if (tid >= TID_MAX_LOAD_COUNT) return; @@ -2935,14 +3038,19 @@ enum HT_STATUS { BA_STATUS_ACTIVE, }; -static u8 iwl4964_tl_ba_avail(struct iwl_priv *priv) +/** + * iwl4964_tl_ba_avail - Find out if an unused aggregation queue is available + */ +static u8 iwl4964_tl_ba_avail(struct iwl4965_priv *priv) { int i; - struct iwl_lq_mngr *lq; + struct iwl4965_lq_mngr *lq; u8 count = 0; u16 msk; - lq = (struct iwl_lq_mngr *)&(priv->lq_mngr); + lq = (struct iwl4965_lq_mngr *)&(priv->lq_mngr); + + /* Find out how many agg queues are in use */ for (i = 0; i < TID_MAX_LOAD_COUNT ; i++) { msk = 1 << i; if ((lq->agg_ctrl.granted_ba & msk) || @@ -2956,10 +3064,10 @@ static u8 iwl4964_tl_ba_avail(struct iwl_priv *priv) return 0; } -static void iwl4965_ba_status(struct iwl_priv *priv, +static void iwl4965_ba_status(struct iwl4965_priv *priv, u8 tid, enum HT_STATUS status); -static int iwl4965_perform_addba(struct iwl_priv *priv, u8 tid, u32 length, +static int iwl4965_perform_addba(struct iwl4965_priv *priv, u8 tid, u32 length, u32 ba_timeout) { int rc; @@ -2971,7 +3079,7 @@ static int iwl4965_perform_addba(struct iwl_priv *priv, u8 tid, u32 length, return rc; } -static int iwl4965_perform_delba(struct iwl_priv *priv, u8 tid) +static int iwl4965_perform_delba(struct iwl4965_priv *priv, u8 tid) { int rc; @@ -2982,8 +3090,8 @@ static int iwl4965_perform_delba(struct iwl_priv *priv, u8 tid) return rc; } -static void iwl4965_turn_on_agg_for_tid(struct iwl_priv *priv, - struct iwl_lq_mngr *lq, +static void iwl4965_turn_on_agg_for_tid(struct iwl4965_priv *priv, + struct iwl4965_lq_mngr *lq, u8 auto_agg, u8 tid) { u32 tid_msk = (1 << tid); @@ -3030,12 +3138,12 @@ static void iwl4965_turn_on_agg_for_tid(struct iwl_priv *priv, spin_unlock_irqrestore(&priv->lq_mngr.lock, flags); } -static void iwl4965_turn_on_agg(struct iwl_priv *priv, u8 tid) +static void iwl4965_turn_on_agg(struct iwl4965_priv *priv, u8 tid) { - struct iwl_lq_mngr *lq; + struct iwl4965_lq_mngr *lq; unsigned long flags; - lq = (struct iwl_lq_mngr *)&(priv->lq_mngr); + lq = (struct iwl4965_lq_mngr *)&(priv->lq_mngr); if ((tid < TID_MAX_LOAD_COUNT)) iwl4965_turn_on_agg_for_tid(priv, lq, lq->agg_ctrl.auto_agg, @@ -3055,13 +3163,13 @@ static void iwl4965_turn_on_agg(struct iwl_priv *priv, u8 tid) } -void iwl4965_turn_off_agg(struct iwl_priv *priv, u8 tid) +void iwl4965_turn_off_agg(struct iwl4965_priv *priv, u8 tid) { u32 tid_msk; - struct iwl_lq_mngr *lq; + struct iwl4965_lq_mngr *lq; unsigned long flags; - lq = (struct iwl_lq_mngr *)&(priv->lq_mngr); + lq = (struct iwl4965_lq_mngr *)&(priv->lq_mngr); if ((tid < TID_MAX_LOAD_COUNT)) { tid_msk = 1 << tid; @@ -3084,14 +3192,17 @@ void iwl4965_turn_off_agg(struct iwl_priv *priv, u8 tid) } } -static void iwl4965_ba_status(struct iwl_priv *priv, +/** + * iwl4965_ba_status - Update driver's link quality mgr with tid's HT status + */ +static void iwl4965_ba_status(struct iwl4965_priv *priv, u8 tid, enum HT_STATUS status) { - struct iwl_lq_mngr *lq; + struct iwl4965_lq_mngr *lq; u32 tid_msk = (1 << tid); unsigned long flags; - lq = (struct iwl_lq_mngr *)&(priv->lq_mngr); + lq = (struct iwl4965_lq_mngr *)&(priv->lq_mngr); if ((tid >= TID_MAX_LOAD_COUNT)) goto out; @@ -3124,14 +3235,14 @@ static void iwl4965_ba_status(struct iwl_priv *priv, static void iwl4965_bg_agg_work(struct work_struct *work) { - struct iwl_priv *priv = container_of(work, struct iwl_priv, + struct iwl4965_priv *priv = container_of(work, struct iwl4965_priv, agg_work); u32 tid; u32 retry_tid; u32 tid_msk; unsigned long flags; - struct iwl_lq_mngr *lq = (struct iwl_lq_mngr *)&(priv->lq_mngr); + struct iwl4965_lq_mngr *lq = (struct iwl4965_lq_mngr *)&(priv->lq_mngr); spin_lock_irqsave(&priv->lq_mngr.lock, flags); retry_tid = lq->agg_ctrl.tid_retry; @@ -3154,90 +3265,13 @@ static void iwl4965_bg_agg_work(struct work_struct *work) spin_unlock_irqrestore(&priv->lq_mngr.lock, flags); return; } -#endif /*CONFIG_IWLWIFI_HT_AGG */ -#endif /* CONFIG_IWLWIFI_HT */ -int iwl4965_tx_cmd(struct iwl_priv *priv, struct iwl_cmd *out_cmd, - u8 sta_id, dma_addr_t txcmd_phys, - struct ieee80211_hdr *hdr, u8 hdr_len, - struct ieee80211_tx_control *ctrl, void *sta_in) +/* TODO: move this functionality to rate scaling */ +void iwl4965_tl_get_stats(struct iwl4965_priv *priv, + struct ieee80211_hdr *hdr) { - struct iwl_tx_cmd cmd; - struct iwl_tx_cmd *tx = (struct iwl_tx_cmd *)&out_cmd->cmd.payload[0]; - dma_addr_t scratch_phys; - u8 unicast = 0; - u8 is_data = 1; - u16 fc; - u16 rate_flags; - int rate_index = min(ctrl->tx_rate & 0xffff, IWL_RATE_COUNT - 1); -#ifdef CONFIG_IWLWIFI_HT -#ifdef CONFIG_IWLWIFI_HT_AGG - __le16 *qc; -#endif /*CONFIG_IWLWIFI_HT_AGG */ -#endif /* CONFIG_IWLWIFI_HT */ - - unicast = !is_multicast_ether_addr(hdr->addr1); - - fc = le16_to_cpu(hdr->frame_control); - if ((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) - is_data = 0; - - memcpy(&cmd, &(out_cmd->cmd.tx), sizeof(struct iwl_tx_cmd)); - memset(tx, 0, sizeof(struct iwl_tx_cmd)); - memcpy(tx->hdr, hdr, hdr_len); - - tx->len = cmd.len; - tx->driver_txop = cmd.driver_txop; - tx->stop_time.life_time = cmd.stop_time.life_time; - tx->tx_flags = cmd.tx_flags; - tx->sta_id = cmd.sta_id; - tx->tid_tspec = cmd.tid_tspec; - tx->timeout.pm_frame_timeout = cmd.timeout.pm_frame_timeout; - tx->next_frame_len = cmd.next_frame_len; - - tx->sec_ctl = cmd.sec_ctl; - memcpy(&(tx->key[0]), &(cmd.key[0]), 16); - tx->tx_flags = cmd.tx_flags; - - tx->rts_retry_limit = cmd.rts_retry_limit; - tx->data_retry_limit = cmd.data_retry_limit; - - scratch_phys = txcmd_phys + sizeof(struct iwl_cmd_header) + - offsetof(struct iwl_tx_cmd, scratch); - tx->dram_lsb_ptr = cpu_to_le32(scratch_phys); - tx->dram_msb_ptr = iwl4965_get_dma_hi_address(scratch_phys); - - /* Hard coded to start at the highest retry fallback position - * until the 4965 specific rate control algorithm is tied in */ - tx->initial_rate_index = LINK_QUAL_MAX_RETRY_NUM - 1; - - /* Alternate between antenna A and B for successive frames */ - if (priv->use_ant_b_for_management_frame) { - priv->use_ant_b_for_management_frame = 0; - rate_flags = RATE_MCS_ANT_B_MSK; - } else { - priv->use_ant_b_for_management_frame = 1; - rate_flags = RATE_MCS_ANT_A_MSK; - } + __le16 *qc = ieee80211_get_qos_ctrl(hdr); - if (!unicast || !is_data) { - if ((rate_index >= IWL_FIRST_CCK_RATE) && - (rate_index <= IWL_LAST_CCK_RATE)) - rate_flags |= RATE_MCS_CCK_MSK; - } else { - tx->initial_rate_index = 0; - tx->tx_flags |= TX_CMD_FLG_STA_RATE_MSK; - } - - tx->rate_n_flags = iwl_hw_set_rate_n_flags(iwl_rates[rate_index].plcp, - rate_flags); - - if (ieee80211_is_back_request(fc)) - tx->tx_flags |= TX_CMD_FLG_ACK_MSK | - TX_CMD_FLG_IMM_BA_RSP_MASK; -#ifdef CONFIG_IWLWIFI_HT -#ifdef CONFIG_IWLWIFI_HT_AGG - qc = ieee80211_get_qos_ctrl(hdr); if (qc && (priv->iw_mode != IEEE80211_IF_TYPE_IBSS)) { u8 tid = 0; @@ -3255,11 +3289,11 @@ int iwl4965_tx_cmd(struct iwl_priv *priv, struct iwl_cmd *out_cmd, spin_unlock_irqrestore(&priv->lq_mngr.lock, flags); schedule_work(&priv->agg_work); } -#endif -#endif - return 0; } +#endif /*CONFIG_IWL4965_HT_AGG */ +#endif /* CONFIG_IWL4965_HT */ + /** * sign_extend - Sign extend a value using specified bit as sign-bit * @@ -3282,7 +3316,7 @@ static s32 sign_extend(u32 oper, int index) * * A return of <0 indicates bogus data in the statistics */ -int iwl4965_get_temperature(const struct iwl_priv *priv) +int iwl4965_get_temperature(const struct iwl4965_priv *priv) { s32 temperature; s32 vt; @@ -3305,11 +3339,12 @@ int iwl4965_get_temperature(const struct iwl_priv *priv) } /* - * Temperature is only 23 bits so sign extend out to 32 + * Temperature is only 23 bits, so sign extend out to 32. * * NOTE If we haven't received a statistics notification yet * with an updated temperature, use R4 provided to us in the - * ALIVE response. */ + * "initialize" ALIVE response. + */ if (!test_bit(STATUS_TEMPERATURE, &priv->status)) vt = sign_extend(R4, 23); else @@ -3349,7 +3384,7 @@ int iwl4965_get_temperature(const struct iwl_priv *priv) * Assumes caller will replace priv->last_temperature once calibration * executed. */ -static int iwl4965_is_temp_calib_needed(struct iwl_priv *priv) +static int iwl4965_is_temp_calib_needed(struct iwl4965_priv *priv) { int temp_diff; @@ -3382,7 +3417,7 @@ static int iwl4965_is_temp_calib_needed(struct iwl_priv *priv) /* Calculate noise level, based on measurements during network silence just * before arriving beacon. This measurement can be done only if we know * exactly when to expect beacons, therefore only when we're associated. */ -static void iwl4965_rx_calc_noise(struct iwl_priv *priv) +static void iwl4965_rx_calc_noise(struct iwl4965_priv *priv) { struct statistics_rx_non_phy *rx_info = &(priv->statistics.rx.general); @@ -3419,9 +3454,9 @@ static void iwl4965_rx_calc_noise(struct iwl_priv *priv) priv->last_rx_noise); } -void iwl_hw_rx_statistics(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb) +void iwl4965_hw_rx_statistics(struct iwl4965_priv *priv, struct iwl4965_rx_mem_buffer *rxb) { - struct iwl_rx_packet *pkt = (void *)rxb->skb->data; + struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data; int change; s32 temp; @@ -3448,7 +3483,7 @@ void iwl_hw_rx_statistics(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb) if (unlikely(!test_bit(STATUS_SCANNING, &priv->status)) && (pkt->hdr.cmd == STATISTICS_NOTIFICATION)) { iwl4965_rx_calc_noise(priv); -#ifdef CONFIG_IWLWIFI_SENSITIVITY +#ifdef CONFIG_IWL4965_SENSITIVITY queue_work(priv->workqueue, &priv->sensitivity_work); #endif } @@ -3483,12 +3518,117 @@ void iwl_hw_rx_statistics(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb) queue_work(priv->workqueue, &priv->txpower_work); } -static void iwl4965_handle_data_packet(struct iwl_priv *priv, int is_data, +static void iwl4965_add_radiotap(struct iwl4965_priv *priv, + struct sk_buff *skb, + struct iwl4965_rx_phy_res *rx_start, + struct ieee80211_rx_status *stats, + u32 ampdu_status) +{ + s8 signal = stats->ssi; + s8 noise = 0; + int rate = stats->rate; + u64 tsf = stats->mactime; + __le16 phy_flags_hw = rx_start->phy_flags; + struct iwl4965_rt_rx_hdr { + struct ieee80211_radiotap_header rt_hdr; + __le64 rt_tsf; /* TSF */ + u8 rt_flags; /* radiotap packet flags */ + u8 rt_rate; /* rate in 500kb/s */ + __le16 rt_channelMHz; /* channel in MHz */ + __le16 rt_chbitmask; /* channel bitfield */ + s8 rt_dbmsignal; /* signal in dBm, kluged to signed */ + s8 rt_dbmnoise; + u8 rt_antenna; /* antenna number */ + } __attribute__ ((packed)) *iwl4965_rt; + + /* TODO: We won't have enough headroom for HT frames. Fix it later. */ + if (skb_headroom(skb) < sizeof(*iwl4965_rt)) { + if (net_ratelimit()) + printk(KERN_ERR "not enough headroom [%d] for " + "radiotap head [%zd]\n", + skb_headroom(skb), sizeof(*iwl4965_rt)); + return; + } + + /* put radiotap header in front of 802.11 header and data */ + iwl4965_rt = (void *)skb_push(skb, sizeof(*iwl4965_rt)); + + /* initialise radiotap header */ + iwl4965_rt->rt_hdr.it_version = PKTHDR_RADIOTAP_VERSION; + iwl4965_rt->rt_hdr.it_pad = 0; + + /* total header + data */ + put_unaligned(cpu_to_le16(sizeof(*iwl4965_rt)), + &iwl4965_rt->rt_hdr.it_len); + + /* Indicate all the fields we add to the radiotap header */ + put_unaligned(cpu_to_le32((1 << IEEE80211_RADIOTAP_TSFT) | + (1 << IEEE80211_RADIOTAP_FLAGS) | + (1 << IEEE80211_RADIOTAP_RATE) | + (1 << IEEE80211_RADIOTAP_CHANNEL) | + (1 << IEEE80211_RADIOTAP_DBM_ANTSIGNAL) | + (1 << IEEE80211_RADIOTAP_DBM_ANTNOISE) | + (1 << IEEE80211_RADIOTAP_ANTENNA)), + &iwl4965_rt->rt_hdr.it_present); + + /* Zero the flags, we'll add to them as we go */ + iwl4965_rt->rt_flags = 0; + + put_unaligned(cpu_to_le64(tsf), &iwl4965_rt->rt_tsf); + + iwl4965_rt->rt_dbmsignal = signal; + iwl4965_rt->rt_dbmnoise = noise; + + /* Convert the channel frequency and set the flags */ + put_unaligned(cpu_to_le16(stats->freq), &iwl4965_rt->rt_channelMHz); + if (!(phy_flags_hw & RX_RES_PHY_FLAGS_BAND_24_MSK)) + put_unaligned(cpu_to_le16(IEEE80211_CHAN_OFDM | + IEEE80211_CHAN_5GHZ), + &iwl4965_rt->rt_chbitmask); + else if (phy_flags_hw & RX_RES_PHY_FLAGS_MOD_CCK_MSK) + put_unaligned(cpu_to_le16(IEEE80211_CHAN_CCK | + IEEE80211_CHAN_2GHZ), + &iwl4965_rt->rt_chbitmask); + else /* 802.11g */ + put_unaligned(cpu_to_le16(IEEE80211_CHAN_OFDM | + IEEE80211_CHAN_2GHZ), + &iwl4965_rt->rt_chbitmask); + + rate = iwl4965_rate_index_from_plcp(rate); + if (rate == -1) + iwl4965_rt->rt_rate = 0; + else + iwl4965_rt->rt_rate = iwl4965_rates[rate].ieee; + + /* + * "antenna number" + * + * It seems that the antenna field in the phy flags value + * is actually a bitfield. This is undefined by radiotap, + * it wants an actual antenna number but I always get "7" + * for most legacy frames I receive indicating that the + * same frame was received on all three RX chains. + * + * I think this field should be removed in favour of a + * new 802.11n radiotap field "RX chains" that is defined + * as a bitmask. + */ + iwl4965_rt->rt_antenna = + le16_to_cpu(phy_flags_hw & RX_RES_PHY_FLAGS_ANTENNA_MSK) >> 4; + + /* set the preamble flag if appropriate */ + if (phy_flags_hw & RX_RES_PHY_FLAGS_SHORT_PREAMBLE_MSK) + iwl4965_rt->rt_flags |= IEEE80211_RADIOTAP_F_SHORTPRE; + + stats->flag |= RX_FLAG_RADIOTAP; +} + +static void iwl4965_handle_data_packet(struct iwl4965_priv *priv, int is_data, int include_phy, - struct iwl_rx_mem_buffer *rxb, + struct iwl4965_rx_mem_buffer *rxb, struct ieee80211_rx_status *stats) { - struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data; + struct iwl4965_rx_packet *pkt = (struct iwl4965_rx_packet *)rxb->skb->data; struct iwl4965_rx_phy_res *rx_start = (include_phy) ? (struct iwl4965_rx_phy_res *)&(pkt->u.raw[0]) : NULL; struct ieee80211_hdr *hdr; @@ -3524,9 +3664,8 @@ static void iwl4965_handle_data_packet(struct iwl_priv *priv, int is_data, rx_start->byte_count = amsdu->byte_count; rx_end = (__le32 *) (((u8 *) hdr) + len); } - if (len > 2342 || len < 16) { - IWL_DEBUG_DROP("byte count out of range [16,2342]" - " : %d\n", len); + if (len > priv->hw_setting.max_pkt_size || len < 16) { + IWL_WARNING("byte count out of range [16,4K] : %d\n", len); return; } @@ -3544,26 +3683,21 @@ static void iwl4965_handle_data_packet(struct iwl_priv *priv, int is_data, return; } - if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) { - if (iwl_param_hwcrypto) - iwl_set_decrypted_flag(priv, rxb->skb, - ampdu_status, stats); - iwl_handle_data_packet_monitor(priv, rxb, hdr, len, stats, 0); - return; - } - stats->flag = 0; hdr = (struct ieee80211_hdr *)rxb->skb->data; - if (iwl_param_hwcrypto) - iwl_set_decrypted_flag(priv, rxb->skb, ampdu_status, stats); + if (iwl4965_param_hwcrypto) + iwl4965_set_decrypted_flag(priv, rxb->skb, ampdu_status, stats); + + if (priv->add_radiotap) + iwl4965_add_radiotap(priv, rxb->skb, rx_start, stats, ampdu_status); ieee80211_rx_irqsafe(priv->hw, rxb->skb, stats); priv->alloc_rxb_skb--; rxb->skb = NULL; #ifdef LED priv->led_packets += len; - iwl_setup_activity_timer(priv); + iwl4965_setup_activity_timer(priv); #endif } @@ -3601,7 +3735,7 @@ static int iwl4965_calc_rssi(struct iwl4965_rx_phy_res *rx_resp) return (max_rssi - agc - IWL_RSSI_OFFSET); } -#ifdef CONFIG_IWLWIFI_HT +#ifdef CONFIG_IWL4965_HT /* Parsed Information Elements */ struct ieee802_11_elems { @@ -3673,9 +3807,37 @@ static int parse_elems(u8 *start, size_t len, struct ieee802_11_elems *elems) return 0; } -#endif /* CONFIG_IWLWIFI_HT */ -static void iwl4965_sta_modify_ps_wake(struct iwl_priv *priv, int sta_id) +void iwl4965_init_ht_hw_capab(struct ieee80211_ht_info *ht_info, int mode) +{ + ht_info->cap = 0; + memset(ht_info->supp_mcs_set, 0, 16); + + ht_info->ht_supported = 1; + + if (mode == MODE_IEEE80211A) { + ht_info->cap |= (u16)IEEE80211_HT_CAP_SUP_WIDTH; + ht_info->cap |= (u16)IEEE80211_HT_CAP_SGI_40; + ht_info->supp_mcs_set[4] = 0x01; + } + ht_info->cap |= (u16)IEEE80211_HT_CAP_GRN_FLD; + ht_info->cap |= (u16)IEEE80211_HT_CAP_SGI_20; + ht_info->cap |= (u16)(IEEE80211_HT_CAP_MIMO_PS & + (IWL_MIMO_PS_NONE << 2)); + if (iwl4965_param_amsdu_size_8K) { + printk(KERN_DEBUG "iwl4965 in A-MSDU 8K support mode\n"); + ht_info->cap |= (u16)IEEE80211_HT_CAP_MAX_AMSDU; + } + + ht_info->ampdu_factor = CFG_HT_RX_AMPDU_FACTOR_DEF; + ht_info->ampdu_density = CFG_HT_MPDU_DENSITY_DEF; + + ht_info->supp_mcs_set[0] = 0xFF; + ht_info->supp_mcs_set[1] = 0xFF; +} +#endif /* CONFIG_IWL4965_HT */ + +static void iwl4965_sta_modify_ps_wake(struct iwl4965_priv *priv, int sta_id) { unsigned long flags; @@ -3686,13 +3848,13 @@ static void iwl4965_sta_modify_ps_wake(struct iwl_priv *priv, int sta_id) priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; spin_unlock_irqrestore(&priv->sta_lock, flags); - iwl_send_add_station(priv, &priv->stations[sta_id].sta, CMD_ASYNC); + iwl4965_send_add_station(priv, &priv->stations[sta_id].sta, CMD_ASYNC); } -static void iwl4965_update_ps_mode(struct iwl_priv *priv, u16 ps_bit, u8 *addr) +static void iwl4965_update_ps_mode(struct iwl4965_priv *priv, u16 ps_bit, u8 *addr) { /* FIXME: need locking over ps_status ??? */ - u8 sta_id = iwl_hw_find_station(priv, addr); + u8 sta_id = iwl4965_hw_find_station(priv, addr); if (sta_id != IWL_INVALID_STATION) { u8 sta_awake = priv->stations[sta_id]. @@ -3707,12 +3869,14 @@ static void iwl4965_update_ps_mode(struct iwl_priv *priv, u16 ps_bit, u8 *addr) } } +#define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6) + /* Called for REPLY_4965_RX (legacy ABG frames), or * REPLY_RX_MPDU_CMD (HT high-throughput N frames). */ -static void iwl4965_rx_reply_rx(struct iwl_priv *priv, - struct iwl_rx_mem_buffer *rxb) +static void iwl4965_rx_reply_rx(struct iwl4965_priv *priv, + struct iwl4965_rx_mem_buffer *rxb) { - struct iwl_rx_packet *pkt = (void *)rxb->skb->data; + struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data; /* Use phy data (Rx signal strength, etc.) contained within * this rx packet for legacy frames, * or phy data cached from REPLY_RX_PHY_CMD for HT frames. */ @@ -3731,11 +3895,8 @@ static void iwl4965_rx_reply_rx(struct iwl_priv *priv, (rx_start->phy_flags & RX_RES_PHY_FLAGS_BAND_24_MSK) ? MODE_IEEE80211G : MODE_IEEE80211A, .antenna = 0, - .rate = iwl_hw_get_rate(rx_start->rate_n_flags), + .rate = iwl4965_hw_get_rate(rx_start->rate_n_flags), .flag = 0, -#ifdef CONFIG_IWLWIFI_HT_AGG - .ordered = 0 -#endif /* CONFIG_IWLWIFI_HT_AGG */ }; u8 network_packet; @@ -3794,32 +3955,32 @@ static void iwl4965_rx_reply_rx(struct iwl_priv *priv, * which are gathered only when associated, and indicate noise * only for the associated network channel ... * Ignore these noise values while scanning (other channels) */ - if (iwl_is_associated(priv) && + if (iwl4965_is_associated(priv) && !test_bit(STATUS_SCANNING, &priv->status)) { stats.noise = priv->last_rx_noise; - stats.signal = iwl_calc_sig_qual(stats.ssi, stats.noise); + stats.signal = iwl4965_calc_sig_qual(stats.ssi, stats.noise); } else { stats.noise = IWL_NOISE_MEAS_NOT_AVAILABLE; - stats.signal = iwl_calc_sig_qual(stats.ssi, 0); + stats.signal = iwl4965_calc_sig_qual(stats.ssi, 0); } /* Reset beacon noise level if not associated. */ - if (!iwl_is_associated(priv)) + if (!iwl4965_is_associated(priv)) priv->last_rx_noise = IWL_NOISE_MEAS_NOT_AVAILABLE; -#ifdef CONFIG_IWLWIFI_DEBUG - /* TODO: Parts of iwl_report_frame are broken for 4965 */ - if (iwl_debug_level & (IWL_DL_RX)) +#ifdef CONFIG_IWL4965_DEBUG + /* TODO: Parts of iwl4965_report_frame are broken for 4965 */ + if (iwl4965_debug_level & (IWL_DL_RX)) /* Set "1" to report good data frames in groups of 100 */ - iwl_report_frame(priv, pkt, header, 1); + iwl4965_report_frame(priv, pkt, header, 1); - if (iwl_debug_level & (IWL_DL_RX | IWL_DL_STATS)) + if (iwl4965_debug_level & (IWL_DL_RX | IWL_DL_STATS)) IWL_DEBUG_RX("Rssi %d, noise %d, qual %d, TSF %lu\n", stats.ssi, stats.noise, stats.signal, (long unsigned int)le64_to_cpu(rx_start->timestamp)); #endif - network_packet = iwl_is_network_packet(priv, header); + network_packet = iwl4965_is_network_packet(priv, header); if (network_packet) { priv->last_rx_rssi = stats.ssi; priv->last_beacon_time = priv->ucode_beacon_time; @@ -3863,27 +4024,31 @@ static void iwl4965_rx_reply_rx(struct iwl_priv *priv, break; /* - * TODO: There is no callback function from upper - * stack to inform us when associated status. this - * work around to sniff assoc_resp management frame - * and finish the association process. + * TODO: Use the new callback function from + * mac80211 instead of sniffing these packets. */ case IEEE80211_STYPE_ASSOC_RESP: case IEEE80211_STYPE_REASSOC_RESP: if (network_packet) { -#ifdef CONFIG_IWLWIFI_HT +#ifdef CONFIG_IWL4965_HT u8 *pos = NULL; struct ieee802_11_elems elems; -#endif /*CONFIG_IWLWIFI_HT */ +#endif /*CONFIG_IWL4965_HT */ struct ieee80211_mgmt *mgnt = (struct ieee80211_mgmt *)header; + /* We have just associated, give some + * time for the 4-way handshake if + * any. Don't start scan too early. */ + priv->next_scan_jiffies = jiffies + + IWL_DELAY_NEXT_SCAN_AFTER_ASSOC; + priv->assoc_id = (~((1 << 15) | (1 << 14)) & le16_to_cpu(mgnt->u.assoc_resp.aid)); priv->assoc_capability = le16_to_cpu( mgnt->u.assoc_resp.capab_info); -#ifdef CONFIG_IWLWIFI_HT +#ifdef CONFIG_IWL4965_HT pos = mgnt->u.assoc_resp.variable; if (!parse_elems(pos, len - (pos - (u8 *) mgnt), @@ -3892,7 +4057,7 @@ static void iwl4965_rx_reply_rx(struct iwl_priv *priv, elems.ht_cap_param) break; } -#endif /*CONFIG_IWLWIFI_HT */ +#endif /*CONFIG_IWL4965_HT */ /* assoc_id is 0 no association */ if (!priv->assoc_id) break; @@ -3907,7 +4072,7 @@ static void iwl4965_rx_reply_rx(struct iwl_priv *priv, case IEEE80211_STYPE_PROBE_REQ: if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) && - !iwl_is_associated(priv)) { + !iwl4965_is_associated(priv)) { DECLARE_MAC_BUF(mac1); DECLARE_MAC_BUF(mac2); DECLARE_MAC_BUF(mac3); @@ -3924,7 +4089,7 @@ static void iwl4965_rx_reply_rx(struct iwl_priv *priv, break; case IEEE80211_FTYPE_CTL: -#ifdef CONFIG_IWLWIFI_HT_AGG +#ifdef CONFIG_IWL4965_HT switch (fc & IEEE80211_FCTL_STYPE) { case IEEE80211_STYPE_BACK_REQ: IWL_DEBUG_HT("IEEE80211_STYPE_BACK_REQ arrived\n"); @@ -3935,7 +4100,6 @@ static void iwl4965_rx_reply_rx(struct iwl_priv *priv, break; } #endif - break; case IEEE80211_FTYPE_DATA: { @@ -3953,7 +4117,7 @@ static void iwl4965_rx_reply_rx(struct iwl_priv *priv, print_mac(mac1, header->addr1), print_mac(mac2, header->addr2), print_mac(mac3, header->addr3)); - else if (unlikely(is_duplicate_packet(priv, header))) + else if (unlikely(iwl4965_is_duplicate_packet(priv, header))) IWL_DEBUG_DROP("Dropping (dup): %s, %s, %s\n", print_mac(mac1, header->addr1), print_mac(mac2, header->addr2), @@ -3971,22 +4135,22 @@ static void iwl4965_rx_reply_rx(struct iwl_priv *priv, /* Cache phy data (Rx signal strength, etc) for HT frame (REPLY_RX_PHY_CMD). * This will be used later in iwl4965_rx_reply_rx() for REPLY_RX_MPDU_CMD. */ -static void iwl4965_rx_reply_rx_phy(struct iwl_priv *priv, - struct iwl_rx_mem_buffer *rxb) +static void iwl4965_rx_reply_rx_phy(struct iwl4965_priv *priv, + struct iwl4965_rx_mem_buffer *rxb) { - struct iwl_rx_packet *pkt = (void *)rxb->skb->data; + struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data; priv->last_phy_res[0] = 1; memcpy(&priv->last_phy_res[1], &(pkt->u.raw[0]), sizeof(struct iwl4965_rx_phy_res)); } -static void iwl4965_rx_missed_beacon_notif(struct iwl_priv *priv, - struct iwl_rx_mem_buffer *rxb) +static void iwl4965_rx_missed_beacon_notif(struct iwl4965_priv *priv, + struct iwl4965_rx_mem_buffer *rxb) { -#ifdef CONFIG_IWLWIFI_SENSITIVITY - struct iwl_rx_packet *pkt = (void *)rxb->skb->data; - struct iwl_missed_beacon_notif *missed_beacon; +#ifdef CONFIG_IWL4965_SENSITIVITY + struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data; + struct iwl4965_missed_beacon_notif *missed_beacon; missed_beacon = &pkt->u.missed_beacon; if (le32_to_cpu(missed_beacon->consequtive_missed_beacons) > 5) { @@ -3999,13 +4163,18 @@ static void iwl4965_rx_missed_beacon_notif(struct iwl_priv *priv, if (unlikely(!test_bit(STATUS_SCANNING, &priv->status))) queue_work(priv->workqueue, &priv->sensitivity_work); } -#endif /*CONFIG_IWLWIFI_SENSITIVITY*/ +#endif /*CONFIG_IWL4965_SENSITIVITY*/ } -#ifdef CONFIG_IWLWIFI_HT -#ifdef CONFIG_IWLWIFI_HT_AGG +#ifdef CONFIG_IWL4965_HT +#ifdef CONFIG_IWL4965_HT_AGG -static void iwl4965_set_tx_status(struct iwl_priv *priv, int txq_id, int idx, +/** + * iwl4965_set_tx_status - Update driver's record of one Tx frame's status + * + * This will get sent to mac80211. + */ +static void iwl4965_set_tx_status(struct iwl4965_priv *priv, int txq_id, int idx, u32 status, u32 retry_count, u32 rate) { struct ieee80211_tx_status *tx_status = @@ -4017,24 +4186,34 @@ static void iwl4965_set_tx_status(struct iwl_priv *priv, int txq_id, int idx, } -static void iwl_sta_modify_enable_tid_tx(struct iwl_priv *priv, +/** + * iwl4965_sta_modify_enable_tid_tx - Enable Tx for this TID in station table + */ +static void iwl4965_sta_modify_enable_tid_tx(struct iwl4965_priv *priv, int sta_id, int tid) { unsigned long flags; + /* Remove "disable" flag, to enable Tx for this TID */ spin_lock_irqsave(&priv->sta_lock, flags); priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_TID_DISABLE_TX; priv->stations[sta_id].sta.tid_disable_tx &= cpu_to_le16(~(1 << tid)); priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; spin_unlock_irqrestore(&priv->sta_lock, flags); - iwl_send_add_station(priv, &priv->stations[sta_id].sta, CMD_ASYNC); + iwl4965_send_add_station(priv, &priv->stations[sta_id].sta, CMD_ASYNC); } -static int iwl4965_tx_status_reply_compressed_ba(struct iwl_priv *priv, - struct iwl_ht_agg *agg, - struct iwl_compressed_ba_resp* +/** + * iwl4965_tx_status_reply_compressed_ba - Update tx status from block-ack + * + * Go through block-ack's bitmap of ACK'd frames, update driver's record of + * ACK vs. not. This gets sent to mac80211, then to rate scaling algo. + */ +static int iwl4965_tx_status_reply_compressed_ba(struct iwl4965_priv *priv, + struct iwl4965_ht_agg *agg, + struct iwl4965_compressed_ba_resp* ba_resp) { @@ -4048,16 +4227,20 @@ static int iwl4965_tx_status_reply_compressed_ba(struct iwl_priv *priv, IWL_ERROR("Received BA when not expected\n"); return -EINVAL; } + + /* Mark that the expected block-ack response arrived */ agg->wait_for_ba = 0; IWL_DEBUG_TX_REPLY("BA %d %d\n", agg->start_idx, ba_resp->ba_seq_ctl); - sh = agg->start_idx - SEQ_TO_INDEX(ba_seq_ctl>>4); - if (sh < 0) /* tbw something is wrong with indeces */ + + /* Calculate shift to align block-ack bits with our Tx window bits */ + sh = agg->start_idx - SEQ_TO_INDEX(ba_seq_ctl >> 4); + if (sh < 0) /* tbw something is wrong with indices */ sh += 0x100; - /* don't use 64 bits for now */ + /* don't use 64-bit values for now */ bitmap0 = resp_bitmap0 >> sh; bitmap1 = resp_bitmap1 >> sh; - bitmap0 |= (resp_bitmap1 & ((1<<sh)|((1<<sh)-1))) << (32 - sh); + bitmap0 |= (resp_bitmap1 & ((1 << sh) | ((1 << sh) - 1))) << (32 - sh); if (agg->frame_count > (64 - sh)) { IWL_DEBUG_TX_REPLY("more frames than bitmap size"); @@ -4065,10 +4248,12 @@ static int iwl4965_tx_status_reply_compressed_ba(struct iwl_priv *priv, } /* check for success or failure according to the - * transmitted bitmap and back bitmap */ + * transmitted bitmap and block-ack bitmap */ bitmap0 &= agg->bitmap0; bitmap1 &= agg->bitmap1; + /* For each frame attempted in aggregation, + * update driver's record of tx frame's status. */ for (i = 0; i < agg->frame_count ; i++) { int idx = (agg->start_idx + i) & 0xff; ack = bitmap0 & (1 << i); @@ -4084,20 +4269,36 @@ static int iwl4965_tx_status_reply_compressed_ba(struct iwl_priv *priv, return 0; } -static inline int iwl_queue_dec_wrap(int index, int n_bd) +/** + * iwl4965_queue_dec_wrap - Decrement queue index, wrap back to end if needed + * @index -- current index + * @n_bd -- total number of entries in queue (s/b power of 2) + */ +static inline int iwl4965_queue_dec_wrap(int index, int n_bd) { return (index == 0) ? n_bd - 1 : index - 1; } -static void iwl4965_rx_reply_compressed_ba(struct iwl_priv *priv, - struct iwl_rx_mem_buffer *rxb) +/** + * iwl4965_rx_reply_compressed_ba - Handler for REPLY_COMPRESSED_BA + * + * Handles block-acknowledge notification from device, which reports success + * of frames sent via aggregation. + */ +static void iwl4965_rx_reply_compressed_ba(struct iwl4965_priv *priv, + struct iwl4965_rx_mem_buffer *rxb) { - struct iwl_rx_packet *pkt = (void *)rxb->skb->data; - struct iwl_compressed_ba_resp *ba_resp = &pkt->u.compressed_ba; + struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data; + struct iwl4965_compressed_ba_resp *ba_resp = &pkt->u.compressed_ba; int index; - struct iwl_tx_queue *txq = NULL; - struct iwl_ht_agg *agg; + struct iwl4965_tx_queue *txq = NULL; + struct iwl4965_ht_agg *agg; + + /* "flow" corresponds to Tx queue */ u16 ba_resp_scd_flow = le16_to_cpu(ba_resp->scd_flow); + + /* "ssn" is start of block-ack Tx window, corresponds to index + * (in Tx queue's circular buffer) of first TFD/frame in window */ u16 ba_resp_scd_ssn = le16_to_cpu(ba_resp->scd_ssn); if (ba_resp_scd_flow >= ARRAY_SIZE(priv->txq)) { @@ -4107,9 +4308,11 @@ static void iwl4965_rx_reply_compressed_ba(struct iwl_priv *priv, txq = &priv->txq[ba_resp_scd_flow]; agg = &priv->stations[ba_resp->sta_id].tid[ba_resp->tid].agg; - index = iwl_queue_dec_wrap(ba_resp_scd_ssn & 0xff, txq->q.n_bd); - /* TODO: Need to get this copy more sefely - now good for debug */ + /* Find index just before block-ack window */ + index = iwl4965_queue_dec_wrap(ba_resp_scd_ssn & 0xff, txq->q.n_bd); + + /* TODO: Need to get this copy more safely - now good for debug */ /* { DECLARE_MAC_BUF(mac); @@ -4132,23 +4335,36 @@ static void iwl4965_rx_reply_compressed_ba(struct iwl_priv *priv, agg->bitmap0); } */ + + /* Update driver's record of ACK vs. not for each frame in window */ iwl4965_tx_status_reply_compressed_ba(priv, agg, ba_resp); - /* releases all the TFDs until the SSN */ - if (txq->q.last_used != (ba_resp_scd_ssn & 0xff)) - iwl_tx_queue_reclaim(priv, ba_resp_scd_flow, index); + + /* Release all TFDs before the SSN, i.e. all TFDs in front of + * block-ack window (we assume that they've been successfully + * transmitted ... if not, it's too late anyway). */ + if (txq->q.read_ptr != (ba_resp_scd_ssn & 0xff)) + iwl4965_tx_queue_reclaim(priv, ba_resp_scd_flow, index); } -static void iwl4965_tx_queue_stop_scheduler(struct iwl_priv *priv, u16 txq_id) +/** + * iwl4965_tx_queue_stop_scheduler - Stop queue, but keep configuration + */ +static void iwl4965_tx_queue_stop_scheduler(struct iwl4965_priv *priv, u16 txq_id) { - iwl_write_restricted_reg(priv, - SCD_QUEUE_STATUS_BITS(txq_id), + /* Simply stop the queue, but don't change any configuration; + * the SCD_ACT_EN bit is the write-enable mask for the ACTIVE bit. */ + iwl4965_write_prph(priv, + KDR_SCD_QUEUE_STATUS_BITS(txq_id), (0 << SCD_QUEUE_STTS_REG_POS_ACTIVE)| (1 << SCD_QUEUE_STTS_REG_POS_SCD_ACT_EN)); } -static int iwl4965_tx_queue_set_q2ratid(struct iwl_priv *priv, u16 ra_tid, +/** + * iwl4965_tx_queue_set_q2ratid - Map unique receiver/tid combination to a queue + */ +static int iwl4965_tx_queue_set_q2ratid(struct iwl4965_priv *priv, u16 ra_tid, u16 txq_id) { u32 tbl_dw_addr; @@ -4160,22 +4376,25 @@ static int iwl4965_tx_queue_set_q2ratid(struct iwl_priv *priv, u16 ra_tid, tbl_dw_addr = priv->scd_base_addr + SCD_TRANSLATE_TBL_OFFSET_QUEUE(txq_id); - tbl_dw = iwl_read_restricted_mem(priv, tbl_dw_addr); + tbl_dw = iwl4965_read_targ_mem(priv, tbl_dw_addr); if (txq_id & 0x1) tbl_dw = (scd_q2ratid << 16) | (tbl_dw & 0x0000FFFF); else tbl_dw = scd_q2ratid | (tbl_dw & 0xFFFF0000); - iwl_write_restricted_mem(priv, tbl_dw_addr, tbl_dw); + iwl4965_write_targ_mem(priv, tbl_dw_addr, tbl_dw); return 0; } /** - * txq_id must be greater than IWL_BACK_QUEUE_FIRST_ID + * iwl4965_tx_queue_agg_enable - Set up & enable aggregation for selected queue + * + * NOTE: txq_id must be greater than IWL_BACK_QUEUE_FIRST_ID, + * i.e. it must be one of the higher queues used for aggregation */ -static int iwl4965_tx_queue_agg_enable(struct iwl_priv *priv, int txq_id, +static int iwl4965_tx_queue_agg_enable(struct iwl4965_priv *priv, int txq_id, int tx_fifo, int sta_id, int tid, u16 ssn_idx) { @@ -4189,43 +4408,48 @@ static int iwl4965_tx_queue_agg_enable(struct iwl_priv *priv, int txq_id, ra_tid = BUILD_RAxTID(sta_id, tid); - iwl_sta_modify_enable_tid_tx(priv, sta_id, tid); + /* Modify device's station table to Tx this TID */ + iwl4965_sta_modify_enable_tid_tx(priv, sta_id, tid); spin_lock_irqsave(&priv->lock, flags); - rc = iwl_grab_restricted_access(priv); + rc = iwl4965_grab_nic_access(priv); if (rc) { spin_unlock_irqrestore(&priv->lock, flags); return rc; } + /* Stop this Tx queue before configuring it */ iwl4965_tx_queue_stop_scheduler(priv, txq_id); + /* Map receiver-address / traffic-ID to this queue */ iwl4965_tx_queue_set_q2ratid(priv, ra_tid, txq_id); + /* Set this queue as a chain-building queue */ + iwl4965_set_bits_prph(priv, KDR_SCD_QUEUECHAIN_SEL, (1 << txq_id)); - iwl_set_bits_restricted_reg(priv, SCD_QUEUECHAIN_SEL, (1<<txq_id)); - - priv->txq[txq_id].q.last_used = (ssn_idx & 0xff); - priv->txq[txq_id].q.first_empty = (ssn_idx & 0xff); - - /* supposes that ssn_idx is valid (!= 0xFFF) */ + /* Place first TFD at index corresponding to start sequence number. + * Assumes that ssn_idx is valid (!= 0xFFF) */ + priv->txq[txq_id].q.read_ptr = (ssn_idx & 0xff); + priv->txq[txq_id].q.write_ptr = (ssn_idx & 0xff); iwl4965_set_wr_ptrs(priv, txq_id, ssn_idx); - iwl_write_restricted_mem(priv, + /* Set up Tx window size and frame limit for this queue */ + iwl4965_write_targ_mem(priv, priv->scd_base_addr + SCD_CONTEXT_QUEUE_OFFSET(txq_id), (SCD_WIN_SIZE << SCD_QUEUE_CTX_REG1_WIN_SIZE_POS) & SCD_QUEUE_CTX_REG1_WIN_SIZE_MSK); - iwl_write_restricted_mem(priv, priv->scd_base_addr + + iwl4965_write_targ_mem(priv, priv->scd_base_addr + SCD_CONTEXT_QUEUE_OFFSET(txq_id) + sizeof(u32), (SCD_FRAME_LIMIT << SCD_QUEUE_CTX_REG2_FRAME_LIMIT_POS) & SCD_QUEUE_CTX_REG2_FRAME_LIMIT_MSK); - iwl_set_bits_restricted_reg(priv, SCD_INTERRUPT_MASK, (1 << txq_id)); + iwl4965_set_bits_prph(priv, KDR_SCD_INTERRUPT_MASK, (1 << txq_id)); + /* Set up Status area in SRAM, map to Tx DMA/FIFO, activate the queue */ iwl4965_tx_queue_set_status(priv, &priv->txq[txq_id], tx_fifo, 1); - iwl_release_restricted_access(priv); + iwl4965_release_nic_access(priv); spin_unlock_irqrestore(&priv->lock, flags); return 0; @@ -4234,7 +4458,7 @@ static int iwl4965_tx_queue_agg_enable(struct iwl_priv *priv, int txq_id, /** * txq_id must be greater than IWL_BACK_QUEUE_FIRST_ID */ -static int iwl4965_tx_queue_agg_disable(struct iwl_priv *priv, u16 txq_id, +static int iwl4965_tx_queue_agg_disable(struct iwl4965_priv *priv, u16 txq_id, u16 ssn_idx, u8 tx_fifo) { unsigned long flags; @@ -4247,7 +4471,7 @@ static int iwl4965_tx_queue_agg_disable(struct iwl_priv *priv, u16 txq_id, } spin_lock_irqsave(&priv->lock, flags); - rc = iwl_grab_restricted_access(priv); + rc = iwl4965_grab_nic_access(priv); if (rc) { spin_unlock_irqrestore(&priv->lock, flags); return rc; @@ -4255,56 +4479,50 @@ static int iwl4965_tx_queue_agg_disable(struct iwl_priv *priv, u16 txq_id, iwl4965_tx_queue_stop_scheduler(priv, txq_id); - iwl_clear_bits_restricted_reg(priv, SCD_QUEUECHAIN_SEL, (1 << txq_id)); + iwl4965_clear_bits_prph(priv, KDR_SCD_QUEUECHAIN_SEL, (1 << txq_id)); - priv->txq[txq_id].q.last_used = (ssn_idx & 0xff); - priv->txq[txq_id].q.first_empty = (ssn_idx & 0xff); + priv->txq[txq_id].q.read_ptr = (ssn_idx & 0xff); + priv->txq[txq_id].q.write_ptr = (ssn_idx & 0xff); /* supposes that ssn_idx is valid (!= 0xFFF) */ iwl4965_set_wr_ptrs(priv, txq_id, ssn_idx); - iwl_clear_bits_restricted_reg(priv, SCD_INTERRUPT_MASK, (1 << txq_id)); + iwl4965_clear_bits_prph(priv, KDR_SCD_INTERRUPT_MASK, (1 << txq_id)); iwl4965_txq_ctx_deactivate(priv, txq_id); iwl4965_tx_queue_set_status(priv, &priv->txq[txq_id], tx_fifo, 0); - iwl_release_restricted_access(priv); + iwl4965_release_nic_access(priv); spin_unlock_irqrestore(&priv->lock, flags); return 0; } -#endif/* CONFIG_IWLWIFI_HT_AGG */ -#endif /* CONFIG_IWLWIFI_HT */ -/* - * RATE SCALE CODE - */ -int iwl4965_init_hw_rates(struct iwl_priv *priv, struct ieee80211_rate *rates) -{ - return 0; -} - +#endif/* CONFIG_IWL4965_HT_AGG */ +#endif /* CONFIG_IWL4965_HT */ /** * iwl4965_add_station - Initialize a station's hardware rate table * - * The uCode contains a table of fallback rates and retries per rate + * The uCode's station table contains a table of fallback rates * for automatic fallback during transmission. * - * NOTE: This initializes the table for a single retry per data rate - * which is not optimal. Setting up an intelligent retry per rate - * requires feedback from transmission, which isn't exposed through - * rc80211_simple which is what this driver is currently using. + * NOTE: This sets up a default set of values. These will be replaced later + * if the driver's iwl-4965-rs rate scaling algorithm is used, instead of + * rc80211_simple. * + * NOTE: Run REPLY_ADD_STA command to set up station table entry, before + * calling this function (which runs REPLY_TX_LINK_QUALITY_CMD, + * which requires station table entry to exist). */ -void iwl4965_add_station(struct iwl_priv *priv, const u8 *addr, int is_ap) +void iwl4965_add_station(struct iwl4965_priv *priv, const u8 *addr, int is_ap) { int i, r; - struct iwl_link_quality_cmd link_cmd = { + struct iwl4965_link_quality_cmd link_cmd = { .reserved1 = 0, }; u16 rate_flags; - /* Set up the rate scaling to start at 54M and fallback - * all the way to 1M in IEEE order and then spin on IEEE */ + /* Set up the rate scaling to start at selected rate, fall back + * all the way down to 1M in IEEE order, and then spin on 1M */ if (is_ap) r = IWL_RATE_54M_INDEX; else if (priv->phymode == MODE_IEEE80211A) @@ -4317,11 +4535,13 @@ void iwl4965_add_station(struct iwl_priv *priv, const u8 *addr, int is_ap) if (r >= IWL_FIRST_CCK_RATE && r <= IWL_LAST_CCK_RATE) rate_flags |= RATE_MCS_CCK_MSK; + /* Use Tx antenna B only */ rate_flags |= RATE_MCS_ANT_B_MSK; rate_flags &= ~RATE_MCS_ANT_A_MSK; + link_cmd.rs_table[i].rate_n_flags = - iwl_hw_set_rate_n_flags(iwl_rates[r].plcp, rate_flags); - r = iwl_get_prev_ieee_rate(r); + iwl4965_hw_set_rate_n_flags(iwl4965_rates[r].plcp, rate_flags); + r = iwl4965_get_prev_ieee_rate(r); } link_cmd.general_params.single_stream_ant_msk = 2; @@ -4332,18 +4552,18 @@ void iwl4965_add_station(struct iwl_priv *priv, const u8 *addr, int is_ap) /* Update the rate scaling for control frame Tx to AP */ link_cmd.sta_id = is_ap ? IWL_AP_ID : IWL4965_BROADCAST_ID; - iwl_send_cmd_pdu(priv, REPLY_TX_LINK_QUALITY_CMD, sizeof(link_cmd), + iwl4965_send_cmd_pdu(priv, REPLY_TX_LINK_QUALITY_CMD, sizeof(link_cmd), &link_cmd); } -#ifdef CONFIG_IWLWIFI_HT +#ifdef CONFIG_IWL4965_HT -static u8 iwl_is_channel_extension(struct iwl_priv *priv, int phymode, +static u8 iwl4965_is_channel_extension(struct iwl4965_priv *priv, int phymode, u16 channel, u8 extension_chan_offset) { - const struct iwl_channel_info *ch_info; + const struct iwl4965_channel_info *ch_info; - ch_info = iwl_get_channel_info(priv, phymode, channel); + ch_info = iwl4965_get_channel_info(priv, phymode, channel); if (!is_channel_valid(ch_info)) return 0; @@ -4357,36 +4577,37 @@ static u8 iwl_is_channel_extension(struct iwl_priv *priv, int phymode, return 0; } -static u8 iwl_is_fat_tx_allowed(struct iwl_priv *priv, - const struct sta_ht_info *ht_info) +static u8 iwl4965_is_fat_tx_allowed(struct iwl4965_priv *priv, + struct ieee80211_ht_info *sta_ht_inf) { + struct iwl_ht_info *iwl_ht_conf = &priv->current_ht_config; - if (priv->channel_width != IWL_CHANNEL_WIDTH_40MHZ) + if ((!iwl_ht_conf->is_ht) || + (iwl_ht_conf->supported_chan_width != IWL_CHANNEL_WIDTH_40MHZ) || + (iwl_ht_conf->extension_chan_offset == IWL_EXT_CHANNEL_OFFSET_AUTO)) return 0; - if (ht_info->supported_chan_width != IWL_CHANNEL_WIDTH_40MHZ) - return 0; - - if (ht_info->extension_chan_offset == IWL_EXT_CHANNEL_OFFSET_AUTO) - return 0; + if (sta_ht_inf) { + if ((!sta_ht_inf->ht_supported) || + (!sta_ht_inf->cap & IEEE80211_HT_CAP_SUP_WIDTH)) + return 0; + } - /* no fat tx allowed on 2.4GHZ */ - if (priv->phymode != MODE_IEEE80211A) - return 0; - return (iwl_is_channel_extension(priv, priv->phymode, - ht_info->control_channel, - ht_info->extension_chan_offset)); + return (iwl4965_is_channel_extension(priv, priv->phymode, + iwl_ht_conf->control_channel, + iwl_ht_conf->extension_chan_offset)); } -void iwl4965_set_rxon_ht(struct iwl_priv *priv, struct sta_ht_info *ht_info) +void iwl4965_set_rxon_ht(struct iwl4965_priv *priv, struct iwl_ht_info *ht_info) { - struct iwl_rxon_cmd *rxon = &priv->staging_rxon; + struct iwl4965_rxon_cmd *rxon = &priv->staging_rxon; u32 val; if (!ht_info->is_ht) return; - if (iwl_is_fat_tx_allowed(priv, ht_info)) + /* Set up channel bandwidth: 20 MHz only, or 20/40 mixed if fat ok */ + if (iwl4965_is_fat_tx_allowed(priv, NULL)) rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED_MSK; else rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK | @@ -4400,7 +4621,7 @@ void iwl4965_set_rxon_ht(struct iwl_priv *priv, struct sta_ht_info *ht_info) return; } - /* Note: control channel is oposit to extension channel */ + /* Note: control channel is opposite of extension channel */ switch (ht_info->extension_chan_offset) { case IWL_EXT_CHANNEL_OFFSET_ABOVE: rxon->flags &= ~(RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK); @@ -4416,66 +4637,56 @@ void iwl4965_set_rxon_ht(struct iwl_priv *priv, struct sta_ht_info *ht_info) break; } - val = ht_info->operating_mode; + val = ht_info->ht_protection; rxon->flags |= cpu_to_le32(val << RXON_FLG_HT_OPERATING_MODE_POS); - priv->active_rate_ht[0] = ht_info->supp_rates[0]; - priv->active_rate_ht[1] = ht_info->supp_rates[1]; iwl4965_set_rxon_chain(priv); IWL_DEBUG_ASSOC("supported HT rate 0x%X %X " "rxon flags 0x%X operation mode :0x%X " "extension channel offset 0x%x " "control chan %d\n", - priv->active_rate_ht[0], priv->active_rate_ht[1], - le32_to_cpu(rxon->flags), ht_info->operating_mode, + ht_info->supp_mcs_set[0], ht_info->supp_mcs_set[1], + le32_to_cpu(rxon->flags), ht_info->ht_protection, ht_info->extension_chan_offset, ht_info->control_channel); return; } -void iwl4965_set_ht_add_station(struct iwl_priv *priv, u8 index) +void iwl4965_set_ht_add_station(struct iwl4965_priv *priv, u8 index, + struct ieee80211_ht_info *sta_ht_inf) { __le32 sta_flags; - struct sta_ht_info *ht_info = &priv->current_assoc_ht; - priv->current_channel_width = IWL_CHANNEL_WIDTH_20MHZ; - if (!ht_info->is_ht) + if (!sta_ht_inf || !sta_ht_inf->ht_supported) goto done; sta_flags = priv->stations[index].sta.station_flags; - if (ht_info->tx_mimo_ps_mode == IWL_MIMO_PS_DYNAMIC) + if (((sta_ht_inf->cap & IEEE80211_HT_CAP_MIMO_PS >> 2)) + == IWL_MIMO_PS_DYNAMIC) sta_flags |= STA_FLG_RTS_MIMO_PROT_MSK; else sta_flags &= ~STA_FLG_RTS_MIMO_PROT_MSK; sta_flags |= cpu_to_le32( - (u32)ht_info->ampdu_factor << STA_FLG_MAX_AGG_SIZE_POS); + (u32)sta_ht_inf->ampdu_factor << STA_FLG_MAX_AGG_SIZE_POS); sta_flags |= cpu_to_le32( - (u32)ht_info->mpdu_density << STA_FLG_AGG_MPDU_DENSITY_POS); - - sta_flags &= (~STA_FLG_FAT_EN_MSK); - ht_info->tx_chan_width = IWL_CHANNEL_WIDTH_20MHZ; - ht_info->chan_width_cap = IWL_CHANNEL_WIDTH_20MHZ; + (u32)sta_ht_inf->ampdu_density << STA_FLG_AGG_MPDU_DENSITY_POS); - if (iwl_is_fat_tx_allowed(priv, ht_info)) { + if (iwl4965_is_fat_tx_allowed(priv, sta_ht_inf)) sta_flags |= STA_FLG_FAT_EN_MSK; - ht_info->chan_width_cap = IWL_CHANNEL_WIDTH_40MHZ; - if (ht_info->supported_chan_width == IWL_CHANNEL_WIDTH_40MHZ) - ht_info->tx_chan_width = IWL_CHANNEL_WIDTH_40MHZ; - } - priv->current_channel_width = ht_info->tx_chan_width; + else + sta_flags &= (~STA_FLG_FAT_EN_MSK); + priv->stations[index].sta.station_flags = sta_flags; done: return; } -#ifdef CONFIG_IWLWIFI_HT_AGG - -static void iwl4965_sta_modify_add_ba_tid(struct iwl_priv *priv, +static void iwl4965_sta_modify_add_ba_tid(struct iwl4965_priv *priv, int sta_id, int tid, u16 ssn) { unsigned long flags; @@ -4488,10 +4699,10 @@ static void iwl4965_sta_modify_add_ba_tid(struct iwl_priv *priv, priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; spin_unlock_irqrestore(&priv->sta_lock, flags); - iwl_send_add_station(priv, &priv->stations[sta_id].sta, CMD_ASYNC); + iwl4965_send_add_station(priv, &priv->stations[sta_id].sta, CMD_ASYNC); } -static void iwl4965_sta_modify_del_ba_tid(struct iwl_priv *priv, +static void iwl4965_sta_modify_del_ba_tid(struct iwl4965_priv *priv, int sta_id, int tid) { unsigned long flags; @@ -4503,9 +4714,39 @@ static void iwl4965_sta_modify_del_ba_tid(struct iwl_priv *priv, priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; spin_unlock_irqrestore(&priv->sta_lock, flags); - iwl_send_add_station(priv, &priv->stations[sta_id].sta, CMD_ASYNC); + iwl4965_send_add_station(priv, &priv->stations[sta_id].sta, CMD_ASYNC); +} + +int iwl4965_mac_ampdu_action(struct ieee80211_hw *hw, + enum ieee80211_ampdu_mlme_action action, + const u8 *addr, u16 tid, u16 ssn) +{ + struct iwl4965_priv *priv = hw->priv; + int sta_id; + DECLARE_MAC_BUF(mac); + + IWL_DEBUG_HT("A-MPDU action on da=%s tid=%d ", + print_mac(mac, addr), tid); + sta_id = iwl4965_hw_find_station(priv, addr); + switch (action) { + case IEEE80211_AMPDU_RX_START: + IWL_DEBUG_HT("start Rx\n"); + iwl4965_sta_modify_add_ba_tid(priv, sta_id, tid, ssn); + break; + case IEEE80211_AMPDU_RX_STOP: + IWL_DEBUG_HT("stop Rx\n"); + iwl4965_sta_modify_del_ba_tid(priv, sta_id, tid); + break; + default: + IWL_DEBUG_HT("unknown\n"); + return -EINVAL; + break; + } + return 0; } +#ifdef CONFIG_IWL4965_HT_AGG + static const u16 default_tid_to_tx_fifo[] = { IWL_TX_FIFO_AC1, IWL_TX_FIFO_AC0, @@ -4526,7 +4767,13 @@ static const u16 default_tid_to_tx_fifo[] = { IWL_TX_FIFO_AC3 }; -static int iwl_txq_ctx_activate_free(struct iwl_priv *priv) +/* + * Find first available (lowest unused) Tx Queue, mark it "active". + * Called only when finding queue for aggregation. + * Should never return anything < 7, because they should already + * be in use as EDCA AC (0-3), Command (4), HCCA (5, 6). + */ +static int iwl4965_txq_ctx_activate_free(struct iwl4965_priv *priv) { int txq_id; @@ -4536,55 +4783,65 @@ static int iwl_txq_ctx_activate_free(struct iwl_priv *priv) return -1; } -int iwl_mac_ht_tx_agg_start(struct ieee80211_hw *hw, u8 *da, u16 tid, +int iwl4965_mac_ht_tx_agg_start(struct ieee80211_hw *hw, u8 *da, u16 tid, u16 *start_seq_num) { - struct iwl_priv *priv = hw->priv; + struct iwl4965_priv *priv = hw->priv; int sta_id; int tx_fifo; int txq_id; int ssn = -1; unsigned long flags; - struct iwl_tid_data *tid_data; + struct iwl4965_tid_data *tid_data; DECLARE_MAC_BUF(mac); + /* Determine Tx DMA/FIFO channel for this Traffic ID */ if (likely(tid < ARRAY_SIZE(default_tid_to_tx_fifo))) tx_fifo = default_tid_to_tx_fifo[tid]; else return -EINVAL; - IWL_WARNING("iwl-AGG iwl_mac_ht_tx_agg_start on da=%s" + IWL_WARNING("iwl-AGG iwl4965_mac_ht_tx_agg_start on da=%s" " tid=%d\n", print_mac(mac, da), tid); - sta_id = iwl_hw_find_station(priv, da); + /* Get index into station table */ + sta_id = iwl4965_hw_find_station(priv, da); if (sta_id == IWL_INVALID_STATION) return -ENXIO; - txq_id = iwl_txq_ctx_activate_free(priv); + /* Find available Tx queue for aggregation */ + txq_id = iwl4965_txq_ctx_activate_free(priv); if (txq_id == -1) return -ENXIO; spin_lock_irqsave(&priv->sta_lock, flags); tid_data = &priv->stations[sta_id].tid[tid]; + + /* Get starting sequence number for 1st frame in block ack window. + * We'll use least signif byte as 1st frame's index into Tx queue. */ ssn = SEQ_TO_SN(tid_data->seq_number); tid_data->agg.txq_id = txq_id; spin_unlock_irqrestore(&priv->sta_lock, flags); *start_seq_num = ssn; + + /* Update driver's link quality manager */ iwl4965_ba_status(priv, tid, BA_STATUS_ACTIVE); + + /* Set up and enable aggregation for selected Tx queue and FIFO */ return iwl4965_tx_queue_agg_enable(priv, txq_id, tx_fifo, sta_id, tid, ssn); } -int iwl_mac_ht_tx_agg_stop(struct ieee80211_hw *hw, u8 *da, u16 tid, +int iwl4965_mac_ht_tx_agg_stop(struct ieee80211_hw *hw, u8 *da, u16 tid, int generator) { - struct iwl_priv *priv = hw->priv; + struct iwl4965_priv *priv = hw->priv; int tx_fifo_id, txq_id, sta_id, ssn = -1; - struct iwl_tid_data *tid_data; + struct iwl4965_tid_data *tid_data; int rc; DECLARE_MAC_BUF(mac); @@ -4598,7 +4855,7 @@ int iwl_mac_ht_tx_agg_stop(struct ieee80211_hw *hw, u8 *da, u16 tid, else return -EINVAL; - sta_id = iwl_hw_find_station(priv, da); + sta_id = iwl4965_hw_find_station(priv, da); if (sta_id == IWL_INVALID_STATION) return -ENXIO; @@ -4613,45 +4870,18 @@ int iwl_mac_ht_tx_agg_stop(struct ieee80211_hw *hw, u8 *da, u16 tid, return rc; iwl4965_ba_status(priv, tid, BA_STATUS_INITIATOR_DELBA); - IWL_DEBUG_INFO("iwl_mac_ht_tx_agg_stop on da=%s tid=%d\n", + IWL_DEBUG_INFO("iwl4965_mac_ht_tx_agg_stop on da=%s tid=%d\n", print_mac(mac, da), tid); return 0; } -int iwl_mac_ht_rx_agg_start(struct ieee80211_hw *hw, u8 *da, - u16 tid, u16 start_seq_num) -{ - struct iwl_priv *priv = hw->priv; - int sta_id; - DECLARE_MAC_BUF(mac); - IWL_WARNING("iwl-AGG iwl_mac_ht_rx_agg_start on da=%s" - " tid=%d\n", print_mac(mac, da), tid); - sta_id = iwl_hw_find_station(priv, da); - iwl4965_sta_modify_add_ba_tid(priv, sta_id, tid, start_seq_num); - return 0; -} - -int iwl_mac_ht_rx_agg_stop(struct ieee80211_hw *hw, u8 *da, - u16 tid, int generator) -{ - struct iwl_priv *priv = hw->priv; - int sta_id; - DECLARE_MAC_BUF(mac); - - IWL_WARNING("iwl-AGG iwl_mac_ht_rx_agg_stop on da=%s tid=%d\n", - print_mac(mac, da), tid); - sta_id = iwl_hw_find_station(priv, da); - iwl4965_sta_modify_del_ba_tid(priv, sta_id, tid); - return 0; -} - -#endif /* CONFIG_IWLWIFI_HT_AGG */ -#endif /* CONFIG_IWLWIFI_HT */ +#endif /* CONFIG_IWL4965_HT_AGG */ +#endif /* CONFIG_IWL4965_HT */ /* Set up 4965-specific Rx frame reply handlers */ -void iwl_hw_rx_handler_setup(struct iwl_priv *priv) +void iwl4965_hw_rx_handler_setup(struct iwl4965_priv *priv) { /* Legacy Rx frames */ priv->rx_handlers[REPLY_4965_RX] = iwl4965_rx_reply_rx; @@ -4663,57 +4893,66 @@ void iwl_hw_rx_handler_setup(struct iwl_priv *priv) priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] = iwl4965_rx_missed_beacon_notif; -#ifdef CONFIG_IWLWIFI_HT -#ifdef CONFIG_IWLWIFI_HT_AGG +#ifdef CONFIG_IWL4965_HT +#ifdef CONFIG_IWL4965_HT_AGG priv->rx_handlers[REPLY_COMPRESSED_BA] = iwl4965_rx_reply_compressed_ba; -#endif /* CONFIG_IWLWIFI_AGG */ -#endif /* CONFIG_IWLWIFI */ +#endif /* CONFIG_IWL4965_HT_AGG */ +#endif /* CONFIG_IWL4965_HT */ } -void iwl_hw_setup_deferred_work(struct iwl_priv *priv) +void iwl4965_hw_setup_deferred_work(struct iwl4965_priv *priv) { INIT_WORK(&priv->txpower_work, iwl4965_bg_txpower_work); INIT_WORK(&priv->statistics_work, iwl4965_bg_statistics_work); -#ifdef CONFIG_IWLWIFI_SENSITIVITY +#ifdef CONFIG_IWL4965_SENSITIVITY INIT_WORK(&priv->sensitivity_work, iwl4965_bg_sensitivity_work); #endif -#ifdef CONFIG_IWLWIFI_HT -#ifdef CONFIG_IWLWIFI_HT_AGG +#ifdef CONFIG_IWL4965_HT +#ifdef CONFIG_IWL4965_HT_AGG INIT_WORK(&priv->agg_work, iwl4965_bg_agg_work); -#endif /* CONFIG_IWLWIFI_AGG */ -#endif /* CONFIG_IWLWIFI_HT */ +#endif /* CONFIG_IWL4965_HT_AGG */ +#endif /* CONFIG_IWL4965_HT */ init_timer(&priv->statistics_periodic); priv->statistics_periodic.data = (unsigned long)priv; priv->statistics_periodic.function = iwl4965_bg_statistics_periodic; } -void iwl_hw_cancel_deferred_work(struct iwl_priv *priv) +void iwl4965_hw_cancel_deferred_work(struct iwl4965_priv *priv) { del_timer_sync(&priv->statistics_periodic); cancel_delayed_work(&priv->init_alive_start); } -struct pci_device_id iwl_hw_card_ids[] = { - {0x8086, 0x4229, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, - {0x8086, 0x4230, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, +struct pci_device_id iwl4965_hw_card_ids[] = { + {PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x4229)}, + {PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x4230)}, {0} }; -int iwl_eeprom_aqcuire_semaphore(struct iwl_priv *priv) +/* + * 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 + * EEPROM chip, not a single event, so even reads could conflict if they + * weren't arbitrated by the semaphore. + */ +int iwl4965_eeprom_acquire_semaphore(struct iwl4965_priv *priv) { u16 count; int rc; for (count = 0; count < EEPROM_SEM_RETRY_LIMIT; count++) { - iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG, + /* Request semaphore */ + iwl4965_set_bit(priv, CSR_HW_IF_CONFIG_REG, CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM); - rc = iwl_poll_bit(priv, CSR_HW_IF_CONFIG_REG, + + /* See if we got it */ + rc = iwl4965_poll_bit(priv, CSR_HW_IF_CONFIG_REG, CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM, CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM, EEPROM_SEM_TIMEOUT); if (rc >= 0) { - IWL_DEBUG_IO("Aqcuired semaphore after %d tries.\n", + IWL_DEBUG_IO("Acquired semaphore after %d tries.\n", count+1); return rc; } @@ -4722,11 +4961,11 @@ int iwl_eeprom_aqcuire_semaphore(struct iwl_priv *priv) return rc; } -inline void iwl_eeprom_release_semaphore(struct iwl_priv *priv) +inline void iwl4965_eeprom_release_semaphore(struct iwl4965_priv *priv) { - iwl_clear_bit(priv, CSR_HW_IF_CONFIG_REG, + iwl4965_clear_bit(priv, CSR_HW_IF_CONFIG_REG, CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM); } -MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids); +MODULE_DEVICE_TABLE(pci, iwl4965_hw_card_ids); |
