From: Shaul Triebitz Date: Mon, 19 Nov 2018 14:44:05 +0000 (+0200) Subject: iwlwifi: introduce device family AX210 X-Git-Tag: v5.15~6918^2~131^2~59^2~24 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=ff911dcaa2e46627f5fc6a22802f72a8bfce4ab5;p=platform%2Fkernel%2Flinux-starfive.git iwlwifi: introduce device family AX210 Add new device family AX210. Make the needed changes for this family. Signed-off-by: Shaul Triebitz Signed-off-by: Luca Coelho --- diff --git a/drivers/net/wireless/intel/iwlwifi/cfg/22000.c b/drivers/net/wireless/intel/iwlwifi/cfg/22000.c index e4933c3..6f231d0 100644 --- a/drivers/net/wireless/intel/iwlwifi/cfg/22000.c +++ b/drivers/net/wireless/intel/iwlwifi/cfg/22000.c @@ -84,6 +84,10 @@ #define IWL_22000_SU_Z0_FW_PRE "iwlwifi-su-z0-" #define IWL_QU_B_JF_B_FW_PRE "iwlwifi-Qu-b0-jf-b0-" #define IWL_CC_A_FW_PRE "iwlwifi-cc-a0-" +#define IWL_22000_SO_A_JF_B_FW_PRE "iwlwifi-so-a0-jf-b0-" +#define IWL_22000_SO_A_HR_B_FW_PRE "iwlwifi-so-a0-hr-b0-" +#define IWL_22000_SO_A_GF_A_FW_PRE "iwlwifi-so-a0-gf-a0-" +#define IWL_22000_TY_A_GF_A_FW_PRE "iwlwifi-ty-a0-gf-a0-" #define IWL_22000_HR_MODULE_FIRMWARE(api) \ IWL_22000_HR_FW_PRE __stringify(api) ".ucode" @@ -107,6 +111,14 @@ IWL_QU_B_JF_B_FW_PRE __stringify(api) ".ucode" #define IWL_CC_A_MODULE_FIRMWARE(api) \ IWL_CC_A_FW_PRE __stringify(api) ".ucode" +#define IWL_22000_SO_A_JF_B_MODULE_FIRMWARE(api) \ + IWL_22000_SO_A_JF_B_FW_PRE __stringify(api) ".ucode" +#define IWL_22000_SO_A_HR_B_MODULE_FIRMWARE(api) \ + IWL_22000_SO_A_HR_B_FW_PRE __stringify(api) ".ucode" +#define IWL_22000_SO_A_GF_A_MODULE_FIRMWARE(api) \ + IWL_22000_SO_A_GF_A_FW_PRE __stringify(api) ".ucode" +#define IWL_22000_TY_A_GF_A_MODULE_FIRMWARE(api) \ + IWL_22000_TY_A_GF_A_FW_PRE __stringify(api) ".ucode" static const struct iwl_base_params iwl_22000_base_params = { .eeprom_size = OTP_LOW_IMAGE_SIZE_32K, @@ -179,6 +191,13 @@ static const struct iwl_ht_params iwl_22000_ht_params = { .base_params = &iwl_22560_base_params, \ .csr = &iwl_csr_v2 +#define IWL_DEVICE_AX210 \ + IWL_DEVICE_22000_COMMON, \ + .device_family = IWL_DEVICE_FAMILY_AX210, \ + .base_params = &iwl_22000_base_params, \ + .csr = &iwl_csr_v1, \ + .min_txq_size = 128 + const struct iwl_cfg iwl22000_2ac_cfg_hr = { .name = "Intel(R) Dual Band Wireless AC 22000", .fw_name_pre = IWL_22000_HR_FW_PRE, @@ -387,6 +406,30 @@ const struct iwl_cfg iwl22560_2ax_cfg_su_cdb = { .max_tx_agg_size = IEEE80211_MAX_AMPDU_BUF_HT, }; +const struct iwl_cfg iwlax210_2ax_cfg_so_jf_a0 = { + .name = "Intel(R) Wireless-AC 9560 160MHz", + .fw_name_pre = IWL_22000_SO_A_JF_B_FW_PRE, + IWL_DEVICE_AX210, +}; + +const struct iwl_cfg iwlax210_2ax_cfg_so_hr_a0 = { + .name = "Intel(R) Wi-Fi 6 AX201 160MHz", + .fw_name_pre = IWL_22000_SO_A_HR_B_FW_PRE, + IWL_DEVICE_AX210, +}; + +const struct iwl_cfg iwlax210_2ax_cfg_so_gf_a0 = { + .name = "Intel(R) Wi-Fi 7 AX211 160MHz", + .fw_name_pre = IWL_22000_SO_A_GF_A_FW_PRE, + IWL_DEVICE_AX210, +}; + +const struct iwl_cfg iwlax210_2ax_cfg_ty_gf_a0 = { + .name = "Intel(R) Wi-Fi 7 AX210 160MHz", + .fw_name_pre = IWL_22000_TY_A_GF_A_FW_PRE, + IWL_DEVICE_AX210, +}; + MODULE_FIRMWARE(IWL_22000_HR_MODULE_FIRMWARE(IWL_22000_UCODE_API_MAX)); MODULE_FIRMWARE(IWL_22000_JF_MODULE_FIRMWARE(IWL_22000_UCODE_API_MAX)); MODULE_FIRMWARE(IWL_22000_HR_A_F0_QNJ_MODULE_FIRMWARE(IWL_22000_UCODE_API_MAX)); @@ -397,3 +440,7 @@ MODULE_FIRMWARE(IWL_22000_HR_A0_QNJ_MODULE_FIRMWARE(IWL_22000_UCODE_API_MAX)); MODULE_FIRMWARE(IWL_22000_SU_Z0_MODULE_FIRMWARE(IWL_22000_UCODE_API_MAX)); MODULE_FIRMWARE(IWL_QU_B_JF_B_MODULE_FIRMWARE(IWL_22000_UCODE_API_MAX)); MODULE_FIRMWARE(IWL_CC_A_MODULE_FIRMWARE(IWL_22000_UCODE_API_MAX)); +MODULE_FIRMWARE(IWL_22000_SO_A_JF_B_MODULE_FIRMWARE(IWL_22000_UCODE_API_MAX)); +MODULE_FIRMWARE(IWL_22000_SO_A_HR_B_MODULE_FIRMWARE(IWL_22000_UCODE_API_MAX)); +MODULE_FIRMWARE(IWL_22000_SO_A_GF_A_MODULE_FIRMWARE(IWL_22000_UCODE_API_MAX)); +MODULE_FIRMWARE(IWL_22000_TY_A_GF_A_MODULE_FIRMWARE(IWL_22000_UCODE_API_MAX)); diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-config.h b/drivers/net/wireless/intel/iwlwifi/iwl-config.h index 5e71373..d25b632 100644 --- a/drivers/net/wireless/intel/iwlwifi/iwl-config.h +++ b/drivers/net/wireless/intel/iwlwifi/iwl-config.h @@ -89,6 +89,7 @@ enum iwl_device_family { IWL_DEVICE_FAMILY_9000, IWL_DEVICE_FAMILY_22000, IWL_DEVICE_FAMILY_22560, + IWL_DEVICE_FAMILY_AX210, }; /* @@ -380,6 +381,7 @@ struct iwl_csr_params { * @d3_debug_data_base_addr: base address where D3 debug data is stored * @d3_debug_data_length: length of the D3 debug data * @bisr_workaround: BISR hardware workaround (for 22260 series devices) + * @min_txq_size: minimum number of slots required in a TX queue * * We enable the driver to be backward compatible wrt. hardware features. * API differences in uCode shouldn't be handled here but through TLVs @@ -445,6 +447,7 @@ struct iwl_cfg { u32 extra_phy_cfg_flags; u32 d3_debug_data_base_addr; u32 d3_debug_data_length; + u32 min_txq_size; }; extern const struct iwl_csr_params iwl_csr_v1; @@ -563,6 +566,10 @@ extern const struct iwl_cfg iwl22000_2ax_cfg_qnj_hr_b0; extern const struct iwl_cfg iwl22000_2ax_cfg_qnj_jf_b0; extern const struct iwl_cfg iwl22000_2ax_cfg_qnj_hr_a0; extern const struct iwl_cfg iwl22560_2ax_cfg_su_cdb; +extern const struct iwl_cfg iwlax210_2ax_cfg_so_jf_a0; +extern const struct iwl_cfg iwlax210_2ax_cfg_so_hr_a0; +extern const struct iwl_cfg iwlax210_2ax_cfg_so_gf_a0; +extern const struct iwl_cfg iwlax210_2ax_cfg_ty_gf_a0; #endif /* CPTCFG_IWLMVM || CPTCFG_IWLFMAC */ #endif /* __IWL_CONFIG_H__ */ diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-csr.h b/drivers/net/wireless/intel/iwlwifi/iwl-csr.h index d0ce3a7..aea6d03 100644 --- a/drivers/net/wireless/intel/iwlwifi/iwl-csr.h +++ b/drivers/net/wireless/intel/iwlwifi/iwl-csr.h @@ -328,11 +328,14 @@ enum { #define CSR_HW_REV_TYPE_QNJ (0x0000360) #define CSR_HW_REV_TYPE_QNJ_B0 (0x0000364) #define CSR_HW_REV_TYPE_HR_CDB (0x0000340) +#define CSR_HW_REV_TYPE_SO (0x0000370) +#define CSR_HW_REV_TYPE_TY (0x0000420) /* RF_ID value */ #define CSR_HW_RF_ID_TYPE_JF (0x00105100) #define CSR_HW_RF_ID_TYPE_HR (0x0010A000) #define CSR_HW_RF_ID_TYPE_HRCDB (0x00109F00) +#define CSR_HW_RF_ID_TYPE_GF (0x0010D000) /* HW_RF CHIP ID */ #define CSR_HW_RF_ID_TYPE_CHIP_ID(_val) (((_val) >> 12) & 0xFFF) @@ -594,6 +597,7 @@ enum msix_hw_int_causes { MSIX_HW_INT_CAUSES_REG_ALIVE = BIT(0), MSIX_HW_INT_CAUSES_REG_WAKEUP = BIT(1), MSIX_HW_INT_CAUSES_REG_IPC = BIT(1), + MSIX_HW_INT_CAUSES_REG_IML = BIT(2), MSIX_HW_INT_CAUSES_REG_SW_ERR_V2 = BIT(5), MSIX_HW_INT_CAUSES_REG_CT_KILL = BIT(6), MSIX_HW_INT_CAUSES_REG_RF_KILL = BIT(7), diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/sta.c b/drivers/net/wireless/intel/iwlwifi/mvm/sta.c index 27839c1..498c315 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/sta.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/sta.c @@ -750,7 +750,8 @@ static int iwl_mvm_tvqm_enable_txq(struct iwl_mvm *mvm, if (tid == IWL_MAX_TID_COUNT) { tid = IWL_MGMT_TID; - size = IWL_MGMT_QUEUE_SIZE; + size = max_t(u32, IWL_MGMT_QUEUE_SIZE, + mvm->trans->cfg->min_txq_size); } queue = iwl_trans_txq_alloc(mvm->trans, cpu_to_le16(TX_QUEUE_CFG_ENABLE_QUEUE), diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/ctxt-info-gen3.c b/drivers/net/wireless/intel/iwlwifi/pcie/ctxt-info-gen3.c index ceb3aa0..55b9120 100644 --- a/drivers/net/wireless/intel/iwlwifi/pcie/ctxt-info-gen3.c +++ b/drivers/net/wireless/intel/iwlwifi/pcie/ctxt-info-gen3.c @@ -66,6 +66,7 @@ int iwl_pcie_ctxt_info_gen3_init(struct iwl_trans *trans, void *iml_img; u32 control_flags = 0; int ret; + int cmdq_size = max_t(u32, TFD_CMD_SLOTS, trans->cfg->min_txq_size); /* Allocate prph scratch */ prph_scratch = dma_alloc_coherent(trans->dev, sizeof(*prph_scratch), @@ -151,7 +152,7 @@ int iwl_pcie_ctxt_info_gen3_init(struct iwl_trans *trans, ctxt_info_gen3->mcr_base_addr = cpu_to_le64(trans_pcie->rxq->used_bd_dma); ctxt_info_gen3->mtr_size = - cpu_to_le16(TFD_QUEUE_CB_SIZE(TFD_CMD_SLOTS)); + cpu_to_le16(TFD_QUEUE_CB_SIZE(cmdq_size)); ctxt_info_gen3->mcr_size = cpu_to_le16(RX_QUEUE_CB_SIZE(MQ_RX_TABLE_SIZE)); @@ -175,8 +176,14 @@ int iwl_pcie_ctxt_info_gen3_init(struct iwl_trans *trans, iwl_write64(trans, CSR_IML_DATA_ADDR, trans_pcie->iml_dma_addr); iwl_write32(trans, CSR_IML_SIZE_ADDR, trans->iml_len); - iwl_set_bit(trans, CSR_CTXT_INFO_BOOT_CTRL, CSR_AUTO_FUNC_BOOT_ENA); - iwl_set_bit(trans, CSR_GP_CNTRL, CSR_AUTO_FUNC_INIT); + + if (trans->cfg->device_family >= IWL_DEVICE_FAMILY_AX210) { + iwl_write_prph(trans, UREG_CPU_INIT_RUN, 1); + } else { + iwl_set_bit(trans, CSR_CTXT_INFO_BOOT_CTRL, + CSR_AUTO_FUNC_BOOT_ENA); + iwl_set_bit(trans, CSR_GP_CNTRL, CSR_AUTO_FUNC_INIT); + } return 0; } diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/drv.c b/drivers/net/wireless/intel/iwlwifi/pcie/drv.c index a22e476..4a1b7bb 100644 --- a/drivers/net/wireless/intel/iwlwifi/pcie/drv.c +++ b/drivers/net/wireless/intel/iwlwifi/pcie/drv.c @@ -948,6 +948,14 @@ static const struct pci_device_id iwl_hw_card_ids[] = { {IWL_PCI_DEVICE(0x1a56, 0x1653, killer1650w_2ax_cfg)}, {IWL_PCI_DEVICE(0x1a56, 0x1654, killer1650x_2ax_cfg)}, + {IWL_PCI_DEVICE(0x2725, 0x0090, iwlax210_2ax_cfg_so_hr_a0)}, + {IWL_PCI_DEVICE(0x7A70, 0x0090, iwlax210_2ax_cfg_so_hr_a0)}, + {IWL_PCI_DEVICE(0x7A70, 0x0310, iwlax210_2ax_cfg_so_hr_a0)}, + {IWL_PCI_DEVICE(0x2725, 0x0020, iwlax210_2ax_cfg_so_hr_a0)}, + {IWL_PCI_DEVICE(0x2725, 0x0310, iwlax210_2ax_cfg_so_hr_a0)}, + {IWL_PCI_DEVICE(0x2725, 0x0A10, iwlax210_2ax_cfg_so_hr_a0)}, + {IWL_PCI_DEVICE(0x2725, 0x00B0, iwlax210_2ax_cfg_so_hr_a0)}, + #endif /* CONFIG_IWLMVM */ {0} diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/rx.c b/drivers/net/wireless/intel/iwlwifi/pcie/rx.c index 49c2ce5..587bb06 100644 --- a/drivers/net/wireless/intel/iwlwifi/pcie/rx.c +++ b/drivers/net/wireless/intel/iwlwifi/pcie/rx.c @@ -247,7 +247,7 @@ static void iwl_pcie_rxq_inc_wr_ptr(struct iwl_trans *trans, } rxq->write_actual = round_down(rxq->write, 8); - if (trans->cfg->device_family >= IWL_DEVICE_FAMILY_22560) + if (trans->cfg->device_family == IWL_DEVICE_FAMILY_22560) iwl_write32(trans, HBUS_TARG_WRPTR, (rxq->write_actual | ((FIRST_RX_QUEUE + rxq->id) << 16))); @@ -2133,7 +2133,7 @@ irqreturn_t iwl_pcie_irq_msix_handler(int irq, void *dev_id) } } - if (trans->cfg->device_family >= IWL_DEVICE_FAMILY_22560 && + if (trans->cfg->device_family == IWL_DEVICE_FAMILY_22560 && inta_hw & MSIX_HW_INT_CAUSES_REG_IPC) { /* Reflect IML transfer status */ int res = iwl_read32(trans, CSR_IML_RESP_ADDR); @@ -2152,6 +2152,17 @@ irqreturn_t iwl_pcie_irq_msix_handler(int irq, void *dev_id) isr_stats->wakeup++; } + if (inta_hw & MSIX_HW_INT_CAUSES_REG_IML) { + /* Reflect IML transfer status */ + int res = iwl_read32(trans, CSR_IML_RESP_ADDR); + + IWL_DEBUG_ISR(trans, "IML transfer status: %d\n", res); + if (res == IWL_IMAGE_RESP_FAIL) { + isr_stats->sw++; + iwl_pcie_irq_handle_error(trans); + } + } + /* Chip got too hot and stopped itself */ if (inta_hw & MSIX_HW_INT_CAUSES_REG_CT_KILL) { IWL_ERR(trans, "Microcode CT kill error detected.\n"); diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/trans-gen2.c b/drivers/net/wireless/intel/iwlwifi/pcie/trans-gen2.c index e2d6437..9c203ca 100644 --- a/drivers/net/wireless/intel/iwlwifi/pcie/trans-gen2.c +++ b/drivers/net/wireless/intel/iwlwifi/pcie/trans-gen2.c @@ -171,7 +171,7 @@ void _iwl_trans_pcie_gen2_stop_device(struct iwl_trans *trans, bool low_power) } iwl_pcie_ctxt_info_free_paging(trans); - if (trans->cfg->device_family == IWL_DEVICE_FAMILY_22560) + if (trans->cfg->device_family >= IWL_DEVICE_FAMILY_22560) iwl_pcie_ctxt_info_gen3_free(trans); else iwl_pcie_ctxt_info_free(trans); @@ -234,6 +234,7 @@ void iwl_trans_pcie_gen2_stop_device(struct iwl_trans *trans, bool low_power) static int iwl_pcie_gen2_nic_init(struct iwl_trans *trans) { struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); + int queue_size = max_t(u32, TFD_CMD_SLOTS, trans->cfg->min_txq_size); /* TODO: most of the logic can be removed in A0 - but not in Z0 */ spin_lock(&trans_pcie->irq_lock); @@ -247,7 +248,7 @@ static int iwl_pcie_gen2_nic_init(struct iwl_trans *trans) return -ENOMEM; /* Allocate or reset and init all Tx and Command queues */ - if (iwl_pcie_gen2_tx_init(trans, trans_pcie->cmd_queue, TFD_CMD_SLOTS)) + if (iwl_pcie_gen2_tx_init(trans, trans_pcie->cmd_queue, queue_size)) return -ENOMEM; /* enable shadow regs in HW */ @@ -332,7 +333,7 @@ int iwl_trans_pcie_gen2_start_fw(struct iwl_trans *trans, goto out; } - if (trans->cfg->device_family == IWL_DEVICE_FAMILY_22560) + if (trans->cfg->device_family >= IWL_DEVICE_FAMILY_22560) ret = iwl_pcie_ctxt_info_gen3_init(trans, fw); else ret = iwl_pcie_ctxt_info_init(trans, fw); diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/trans.c b/drivers/net/wireless/intel/iwlwifi/pcie/trans.c index 375d8f2..6c30c88 100644 --- a/drivers/net/wireless/intel/iwlwifi/pcie/trans.c +++ b/drivers/net/wireless/intel/iwlwifi/pcie/trans.c @@ -1094,6 +1094,7 @@ static struct iwl_causes_list causes_list[] = { {MSIX_FH_INT_CAUSES_FH_ERR, CSR_MSIX_FH_INT_MASK_AD, 0x5}, {MSIX_HW_INT_CAUSES_REG_ALIVE, CSR_MSIX_HW_INT_MASK_AD, 0x10}, {MSIX_HW_INT_CAUSES_REG_WAKEUP, CSR_MSIX_HW_INT_MASK_AD, 0x11}, + {MSIX_HW_INT_CAUSES_REG_IML, CSR_MSIX_HW_INT_MASK_AD, 0x12}, {MSIX_HW_INT_CAUSES_REG_CT_KILL, CSR_MSIX_HW_INT_MASK_AD, 0x16}, {MSIX_HW_INT_CAUSES_REG_RF_KILL, CSR_MSIX_HW_INT_MASK_AD, 0x17}, {MSIX_HW_INT_CAUSES_REG_PERIODIC, CSR_MSIX_HW_INT_MASK_AD, 0x18}, @@ -1126,7 +1127,7 @@ static void iwl_pcie_map_non_rx_causes(struct iwl_trans *trans) struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); int val = trans_pcie->def_irq | MSIX_NON_AUTO_CLEAR_CAUSE; int i, arr_size = - (trans->cfg->device_family < IWL_DEVICE_FAMILY_22560) ? + (trans->cfg->device_family != IWL_DEVICE_FAMILY_22560) ? ARRAY_SIZE(causes_list) : ARRAY_SIZE(causes_list_v2); /* @@ -1136,7 +1137,7 @@ static void iwl_pcie_map_non_rx_causes(struct iwl_trans *trans) */ for (i = 0; i < arr_size; i++) { struct iwl_causes_list *causes = - (trans->cfg->device_family < IWL_DEVICE_FAMILY_22560) ? + (trans->cfg->device_family != IWL_DEVICE_FAMILY_22560) ? causes_list : causes_list_v2; iwl_write8(trans, CSR_MSIX_IVAR(causes[i].addr), val); @@ -3503,7 +3504,17 @@ struct iwl_trans *iwl_trans_pcie_alloc(struct pci_dev *pdev, #if IS_ENABLED(CONFIG_IWLMVM) trans->hw_rf_id = iwl_read32(trans, CSR_HW_RF_ID); - if (cfg == &iwl22560_2ax_cfg_hr) { + if (cfg == &iwlax210_2ax_cfg_so_hr_a0) { + if (trans->hw_rev == CSR_HW_REV_TYPE_TY) { + trans->cfg = &iwlax210_2ax_cfg_ty_gf_a0; + } else if (CSR_HW_RF_ID_TYPE_CHIP_ID(trans->hw_rf_id) == + CSR_HW_RF_ID_TYPE_CHIP_ID(CSR_HW_RF_ID_TYPE_JF)) { + trans->cfg = &iwlax210_2ax_cfg_so_jf_a0; + } else if (CSR_HW_RF_ID_TYPE_CHIP_ID(trans->hw_rf_id) == + CSR_HW_RF_ID_TYPE_CHIP_ID(CSR_HW_RF_ID_TYPE_GF)) { + trans->cfg = &iwlax210_2ax_cfg_so_gf_a0; + } + } else if (cfg == &iwl22560_2ax_cfg_hr) { if (CSR_HW_RF_ID_TYPE_CHIP_ID(trans->hw_rf_id) == CSR_HW_RF_ID_TYPE_CHIP_ID(CSR_HW_RF_ID_TYPE_HR)) { trans->cfg = &iwl22560_2ax_cfg_hr; diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/tx.c b/drivers/net/wireless/intel/iwlwifi/pcie/tx.c index 28a3718..d8773e0 100644 --- a/drivers/net/wireless/intel/iwlwifi/pcie/tx.c +++ b/drivers/net/wireless/intel/iwlwifi/pcie/tx.c @@ -995,7 +995,11 @@ static int iwl_pcie_tx_alloc(struct iwl_trans *trans) txq_id++) { bool cmd_queue = (txq_id == trans_pcie->cmd_queue); - slots_num = cmd_queue ? TFD_CMD_SLOTS : TFD_TX_CMD_SLOTS; + if (cmd_queue) + slots_num = max_t(u32, TFD_CMD_SLOTS, + trans->cfg->min_txq_size); + else + slots_num = TFD_TX_CMD_SLOTS; trans_pcie->txq[txq_id] = &trans_pcie->txq_memory[txq_id]; ret = iwl_pcie_txq_alloc(trans, trans_pcie->txq[txq_id], slots_num, cmd_queue); @@ -1044,7 +1048,11 @@ int iwl_pcie_tx_init(struct iwl_trans *trans) txq_id++) { bool cmd_queue = (txq_id == trans_pcie->cmd_queue); - slots_num = cmd_queue ? TFD_CMD_SLOTS : TFD_TX_CMD_SLOTS; + if (cmd_queue) + slots_num = max_t(u32, TFD_CMD_SLOTS, + trans->cfg->min_txq_size); + else + slots_num = TFD_TX_CMD_SLOTS; ret = iwl_pcie_txq_init(trans, trans_pcie->txq[txq_id], slots_num, cmd_queue); if (ret) {