diff options
Diffstat (limited to 'drivers/net/wireless/intel/iwlwifi/pcie/ctxt-info-gen3.c')
-rw-r--r-- | drivers/net/wireless/intel/iwlwifi/pcie/ctxt-info-gen3.c | 553 |
1 files changed, 553 insertions, 0 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/ctxt-info-gen3.c b/drivers/net/wireless/intel/iwlwifi/pcie/ctxt-info-gen3.c new file mode 100644 index 000000000..fa4a14546 --- /dev/null +++ b/drivers/net/wireless/intel/iwlwifi/pcie/ctxt-info-gen3.c @@ -0,0 +1,553 @@ +// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause +/* + * Copyright (C) 2018-2023 Intel Corporation + */ +#include "iwl-trans.h" +#include "iwl-fh.h" +#include "iwl-context-info-gen3.h" +#include "internal.h" +#include "iwl-prph.h" + +static void +iwl_pcie_ctxt_info_dbg_enable(struct iwl_trans *trans, + struct iwl_prph_scratch_hwm_cfg *dbg_cfg, + u32 *control_flags) +{ + enum iwl_fw_ini_allocation_id alloc_id = IWL_FW_INI_ALLOCATION_ID_DBGC1; + struct iwl_fw_ini_allocation_tlv *fw_mon_cfg; + u32 dbg_flags = 0; + + if (!iwl_trans_dbg_ini_valid(trans)) { + struct iwl_dram_data *fw_mon = &trans->dbg.fw_mon; + + iwl_pcie_alloc_fw_monitor(trans, 0); + + if (fw_mon->size) { + dbg_flags |= IWL_PRPH_SCRATCH_EDBG_DEST_DRAM; + + IWL_DEBUG_FW(trans, + "WRT: Applying DRAM buffer destination\n"); + + dbg_cfg->hwm_base_addr = cpu_to_le64(fw_mon->physical); + dbg_cfg->hwm_size = cpu_to_le32(fw_mon->size); + } + + goto out; + } + + fw_mon_cfg = &trans->dbg.fw_mon_cfg[alloc_id]; + + switch (le32_to_cpu(fw_mon_cfg->buf_location)) { + case IWL_FW_INI_LOCATION_SRAM_PATH: + dbg_flags |= IWL_PRPH_SCRATCH_EDBG_DEST_INTERNAL; + IWL_DEBUG_FW(trans, + "WRT: Applying SMEM buffer destination\n"); + break; + + case IWL_FW_INI_LOCATION_NPK_PATH: + dbg_flags |= IWL_PRPH_SCRATCH_EDBG_DEST_TB22DTF; + IWL_DEBUG_FW(trans, + "WRT: Applying NPK buffer destination\n"); + break; + + case IWL_FW_INI_LOCATION_DRAM_PATH: + if (trans->dbg.fw_mon_ini[alloc_id].num_frags) { + struct iwl_dram_data *frag = + &trans->dbg.fw_mon_ini[alloc_id].frags[0]; + dbg_flags |= IWL_PRPH_SCRATCH_EDBG_DEST_DRAM; + dbg_cfg->hwm_base_addr = cpu_to_le64(frag->physical); + dbg_cfg->hwm_size = cpu_to_le32(frag->size); + dbg_cfg->debug_token_config = cpu_to_le32(trans->dbg.ucode_preset); + IWL_DEBUG_FW(trans, + "WRT: Applying DRAM destination (debug_token_config=%u)\n", + dbg_cfg->debug_token_config); + IWL_DEBUG_FW(trans, + "WRT: Applying DRAM destination (alloc_id=%u, num_frags=%u)\n", + alloc_id, + trans->dbg.fw_mon_ini[alloc_id].num_frags); + } + break; + default: + IWL_ERR(trans, "WRT: Invalid buffer destination\n"); + } +out: + if (dbg_flags) + *control_flags |= IWL_PRPH_SCRATCH_EARLY_DEBUG_EN | dbg_flags; +} + +int iwl_pcie_ctxt_info_gen3_init(struct iwl_trans *trans, + const struct fw_img *fw) +{ + struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); + struct iwl_context_info_gen3 *ctxt_info_gen3; + struct iwl_prph_scratch *prph_scratch; + struct iwl_prph_scratch_ctrl_cfg *prph_sc_ctrl; + struct iwl_prph_info *prph_info; + u32 control_flags = 0; + int ret; + int cmdq_size = max_t(u32, IWL_CMD_QUEUE_SIZE, + trans->cfg->min_txq_size); + + switch (trans_pcie->rx_buf_size) { + case IWL_AMSDU_DEF: + return -EINVAL; + case IWL_AMSDU_2K: + break; + case IWL_AMSDU_4K: + control_flags |= IWL_PRPH_SCRATCH_RB_SIZE_4K; + break; + case IWL_AMSDU_8K: + control_flags |= IWL_PRPH_SCRATCH_RB_SIZE_4K; + /* if firmware supports the ext size, tell it */ + control_flags |= IWL_PRPH_SCRATCH_RB_SIZE_EXT_8K; + break; + case IWL_AMSDU_12K: + control_flags |= IWL_PRPH_SCRATCH_RB_SIZE_4K; + /* if firmware supports the ext size, tell it */ + control_flags |= IWL_PRPH_SCRATCH_RB_SIZE_EXT_16K; + break; + } + + /* Allocate prph scratch */ + prph_scratch = dma_alloc_coherent(trans->dev, sizeof(*prph_scratch), + &trans_pcie->prph_scratch_dma_addr, + GFP_KERNEL); + if (!prph_scratch) + return -ENOMEM; + + prph_sc_ctrl = &prph_scratch->ctrl_cfg; + + prph_sc_ctrl->version.version = 0; + prph_sc_ctrl->version.mac_id = + cpu_to_le16((u16)iwl_read32(trans, CSR_HW_REV)); + prph_sc_ctrl->version.size = cpu_to_le16(sizeof(*prph_scratch) / 4); + + control_flags |= IWL_PRPH_SCRATCH_MTR_MODE; + control_flags |= IWL_PRPH_MTR_FORMAT_256B & IWL_PRPH_SCRATCH_MTR_FORMAT; + + if (trans->trans_cfg->imr_enabled) + control_flags |= IWL_PRPH_SCRATCH_IMR_DEBUG_EN; + + /* initialize RX default queue */ + prph_sc_ctrl->rbd_cfg.free_rbd_addr = + cpu_to_le64(trans_pcie->rxq->bd_dma); + + iwl_pcie_ctxt_info_dbg_enable(trans, &prph_sc_ctrl->hwm_cfg, + &control_flags); + prph_sc_ctrl->control.control_flags = cpu_to_le32(control_flags); + + /* initialize the Step equalizer data */ + prph_sc_ctrl->step_cfg.mbx_addr_0 = cpu_to_le32(trans->mbx_addr_0_step); + prph_sc_ctrl->step_cfg.mbx_addr_1 = cpu_to_le32(trans->mbx_addr_1_step); + + /* allocate ucode sections in dram and set addresses */ + ret = iwl_pcie_init_fw_sec(trans, fw, &prph_scratch->dram); + if (ret) + goto err_free_prph_scratch; + + + /* Allocate prph information + * currently we don't assign to the prph info anything, but it would get + * assigned later + * + * We also use the second half of this page to give the device some + * dummy TR/CR tail pointers - which shouldn't be necessary as we don't + * use this, but the hardware still reads/writes there and we can't let + * it go do that with a NULL pointer. + */ + BUILD_BUG_ON(sizeof(*prph_info) > PAGE_SIZE / 2); + prph_info = dma_alloc_coherent(trans->dev, PAGE_SIZE, + &trans_pcie->prph_info_dma_addr, + GFP_KERNEL); + if (!prph_info) { + ret = -ENOMEM; + goto err_free_prph_scratch; + } + + /* Allocate context info */ + ctxt_info_gen3 = dma_alloc_coherent(trans->dev, + sizeof(*ctxt_info_gen3), + &trans_pcie->ctxt_info_dma_addr, + GFP_KERNEL); + if (!ctxt_info_gen3) { + ret = -ENOMEM; + goto err_free_prph_info; + } + + ctxt_info_gen3->prph_info_base_addr = + cpu_to_le64(trans_pcie->prph_info_dma_addr); + ctxt_info_gen3->prph_scratch_base_addr = + cpu_to_le64(trans_pcie->prph_scratch_dma_addr); + ctxt_info_gen3->prph_scratch_size = + cpu_to_le32(sizeof(*prph_scratch)); + ctxt_info_gen3->cr_head_idx_arr_base_addr = + cpu_to_le64(trans_pcie->rxq->rb_stts_dma); + ctxt_info_gen3->tr_tail_idx_arr_base_addr = + cpu_to_le64(trans_pcie->prph_info_dma_addr + PAGE_SIZE / 2); + ctxt_info_gen3->cr_tail_idx_arr_base_addr = + cpu_to_le64(trans_pcie->prph_info_dma_addr + 3 * PAGE_SIZE / 4); + ctxt_info_gen3->mtr_base_addr = + cpu_to_le64(trans->txqs.txq[trans->txqs.cmd.q_id]->dma_addr); + 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(cmdq_size)); + ctxt_info_gen3->mcr_size = + cpu_to_le16(RX_QUEUE_CB_SIZE(trans->cfg->num_rbds)); + + trans_pcie->ctxt_info_gen3 = ctxt_info_gen3; + trans_pcie->prph_info = prph_info; + trans_pcie->prph_scratch = prph_scratch; + + /* Allocate IML */ + trans_pcie->iml = dma_alloc_coherent(trans->dev, trans->iml_len, + &trans_pcie->iml_dma_addr, + GFP_KERNEL); + if (!trans_pcie->iml) { + ret = -ENOMEM; + goto err_free_ctxt_info; + } + + memcpy(trans_pcie->iml, trans->iml, trans->iml_len); + + iwl_enable_fw_load_int_ctx_info(trans); + + /* kick FW self load */ + iwl_write64(trans, CSR_CTXT_INFO_ADDR, + trans_pcie->ctxt_info_dma_addr); + 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); + + return 0; + +err_free_ctxt_info: + dma_free_coherent(trans->dev, sizeof(*trans_pcie->ctxt_info_gen3), + trans_pcie->ctxt_info_gen3, + trans_pcie->ctxt_info_dma_addr); + trans_pcie->ctxt_info_gen3 = NULL; +err_free_prph_info: + dma_free_coherent(trans->dev, PAGE_SIZE, prph_info, + trans_pcie->prph_info_dma_addr); + +err_free_prph_scratch: + dma_free_coherent(trans->dev, + sizeof(*prph_scratch), + prph_scratch, + trans_pcie->prph_scratch_dma_addr); + return ret; + +} + +void iwl_pcie_ctxt_info_gen3_free(struct iwl_trans *trans, bool alive) +{ + struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); + + if (trans_pcie->iml) { + dma_free_coherent(trans->dev, trans->iml_len, trans_pcie->iml, + trans_pcie->iml_dma_addr); + trans_pcie->iml_dma_addr = 0; + trans_pcie->iml = NULL; + } + + iwl_pcie_ctxt_info_free_fw_img(trans); + + if (alive) + return; + + if (!trans_pcie->ctxt_info_gen3) + return; + + /* ctxt_info_gen3 and prph_scratch are still needed for PNVM load */ + dma_free_coherent(trans->dev, sizeof(*trans_pcie->ctxt_info_gen3), + trans_pcie->ctxt_info_gen3, + trans_pcie->ctxt_info_dma_addr); + trans_pcie->ctxt_info_dma_addr = 0; + trans_pcie->ctxt_info_gen3 = NULL; + + dma_free_coherent(trans->dev, sizeof(*trans_pcie->prph_scratch), + trans_pcie->prph_scratch, + trans_pcie->prph_scratch_dma_addr); + trans_pcie->prph_scratch_dma_addr = 0; + trans_pcie->prph_scratch = NULL; + + /* this is needed for the entire lifetime */ + dma_free_coherent(trans->dev, PAGE_SIZE, trans_pcie->prph_info, + trans_pcie->prph_info_dma_addr); + trans_pcie->prph_info_dma_addr = 0; + trans_pcie->prph_info = NULL; +} + +static int iwl_pcie_load_payloads_continuously(struct iwl_trans *trans, + const struct iwl_pnvm_image *pnvm_data, + struct iwl_dram_data *dram) +{ + u32 len, len0, len1; + + if (pnvm_data->n_chunks != UNFRAGMENTED_PNVM_PAYLOADS_NUMBER) { + IWL_DEBUG_FW(trans, "expected 2 payloads, got %d.\n", + pnvm_data->n_chunks); + return -EINVAL; + } + + len0 = pnvm_data->chunks[0].len; + len1 = pnvm_data->chunks[1].len; + if (len1 > 0xFFFFFFFF - len0) { + IWL_DEBUG_FW(trans, "sizes of payloads overflow.\n"); + return -EINVAL; + } + len = len0 + len1; + + dram->block = iwl_pcie_ctxt_info_dma_alloc_coherent(trans, len, + &dram->physical); + if (!dram->block) { + IWL_DEBUG_FW(trans, "Failed to allocate PNVM DMA.\n"); + return -ENOMEM; + } + + dram->size = len; + memcpy(dram->block, pnvm_data->chunks[0].data, len0); + memcpy((u8 *)dram->block + len0, pnvm_data->chunks[1].data, len1); + + return 0; +} + +static int iwl_pcie_load_payloads_segments + (struct iwl_trans *trans, + struct iwl_dram_regions *dram_regions, + const struct iwl_pnvm_image *pnvm_data) +{ + struct iwl_dram_data *cur_payload_dram = &dram_regions->drams[0]; + struct iwl_dram_data *desc_dram = &dram_regions->prph_scratch_mem_desc; + struct iwl_prph_scrath_mem_desc_addr_array *addresses; + const void *data; + u32 len; + int i; + + /* allocate and init DRAM descriptors array */ + len = sizeof(struct iwl_prph_scrath_mem_desc_addr_array); + desc_dram->block = iwl_pcie_ctxt_info_dma_alloc_coherent + (trans, + len, + &desc_dram->physical); + if (!desc_dram->block) { + IWL_DEBUG_FW(trans, "Failed to allocate PNVM DMA.\n"); + return -ENOMEM; + } + desc_dram->size = len; + memset(desc_dram->block, 0, len); + + /* allocate DRAM region for each payload */ + dram_regions->n_regions = 0; + for (i = 0; i < pnvm_data->n_chunks; i++) { + len = pnvm_data->chunks[i].len; + data = pnvm_data->chunks[i].data; + + if (iwl_pcie_ctxt_info_alloc_dma(trans, + data, + len, + cur_payload_dram)) { + iwl_trans_pcie_free_pnvm_dram_regions(dram_regions, + trans->dev); + return -ENOMEM; + } + + dram_regions->n_regions++; + cur_payload_dram++; + } + + /* fill desc with the DRAM payloads addresses */ + addresses = desc_dram->block; + for (i = 0; i < pnvm_data->n_chunks; i++) { + addresses->mem_descs[i] = + cpu_to_le64(dram_regions->drams[i].physical); + } + + return 0; + +} + +int iwl_trans_pcie_ctx_info_gen3_load_pnvm(struct iwl_trans *trans, + const struct iwl_pnvm_image *pnvm_payloads, + const struct iwl_ucode_capabilities *capa) +{ + struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); + struct iwl_prph_scratch_ctrl_cfg *prph_sc_ctrl = + &trans_pcie->prph_scratch->ctrl_cfg; + struct iwl_dram_regions *dram_regions = &trans_pcie->pnvm_data; + int ret = 0; + + /* only allocate the DRAM if not allocated yet */ + if (trans->pnvm_loaded) + return 0; + + if (WARN_ON(prph_sc_ctrl->pnvm_cfg.pnvm_size)) + return -EBUSY; + + if (trans->trans_cfg->device_family < IWL_DEVICE_FAMILY_AX210) + return 0; + + if (!pnvm_payloads->n_chunks) { + IWL_DEBUG_FW(trans, "no payloads\n"); + return -EINVAL; + } + + /* save payloads in several DRAM sections */ + if (fw_has_capa(capa, IWL_UCODE_TLV_CAPA_FRAGMENTED_PNVM_IMG)) { + ret = iwl_pcie_load_payloads_segments(trans, + dram_regions, + pnvm_payloads); + if (!ret) + trans->pnvm_loaded = true; + } else { + /* save only in one DRAM section */ + ret = iwl_pcie_load_payloads_continuously + (trans, + pnvm_payloads, + &dram_regions->drams[0]); + if (!ret) { + dram_regions->n_regions = 1; + trans->pnvm_loaded = true; + } + } + + return ret; +} + +static inline size_t +iwl_dram_regions_size(const struct iwl_dram_regions *dram_regions) +{ + size_t total_size = 0; + int i; + + for (i = 0; i < dram_regions->n_regions; i++) + total_size += dram_regions->drams[i].size; + + return total_size; +} + +static void iwl_pcie_set_pnvm_segments(struct iwl_trans *trans) +{ + struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); + struct iwl_prph_scratch_ctrl_cfg *prph_sc_ctrl = + &trans_pcie->prph_scratch->ctrl_cfg; + struct iwl_dram_regions *dram_regions = &trans_pcie->pnvm_data; + + prph_sc_ctrl->pnvm_cfg.pnvm_base_addr = + cpu_to_le64(dram_regions->prph_scratch_mem_desc.physical); + prph_sc_ctrl->pnvm_cfg.pnvm_size = + cpu_to_le32(iwl_dram_regions_size(dram_regions)); +} + +static void iwl_pcie_set_continuous_pnvm(struct iwl_trans *trans) +{ + struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); + struct iwl_prph_scratch_ctrl_cfg *prph_sc_ctrl = + &trans_pcie->prph_scratch->ctrl_cfg; + + prph_sc_ctrl->pnvm_cfg.pnvm_base_addr = + cpu_to_le64(trans_pcie->pnvm_data.drams[0].physical); + prph_sc_ctrl->pnvm_cfg.pnvm_size = + cpu_to_le32(trans_pcie->pnvm_data.drams[0].size); +} + +void iwl_trans_pcie_ctx_info_gen3_set_pnvm(struct iwl_trans *trans, + const struct iwl_ucode_capabilities *capa) +{ + if (trans->trans_cfg->device_family < IWL_DEVICE_FAMILY_AX210) + return; + + if (fw_has_capa(capa, IWL_UCODE_TLV_CAPA_FRAGMENTED_PNVM_IMG)) + iwl_pcie_set_pnvm_segments(trans); + else + iwl_pcie_set_continuous_pnvm(trans); +} + +int iwl_trans_pcie_ctx_info_gen3_load_reduce_power(struct iwl_trans *trans, + const struct iwl_pnvm_image *payloads, + const struct iwl_ucode_capabilities *capa) +{ + struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); + struct iwl_prph_scratch_ctrl_cfg *prph_sc_ctrl = + &trans_pcie->prph_scratch->ctrl_cfg; + struct iwl_dram_regions *dram_regions = &trans_pcie->reduced_tables_data; + int ret = 0; + + /* only allocate the DRAM if not allocated yet */ + if (trans->reduce_power_loaded) + return 0; + + if (trans->trans_cfg->device_family < IWL_DEVICE_FAMILY_AX210) + return 0; + + if (WARN_ON(prph_sc_ctrl->reduce_power_cfg.size)) + return -EBUSY; + + if (!payloads->n_chunks) { + IWL_DEBUG_FW(trans, "no payloads\n"); + return -EINVAL; + } + + /* save payloads in several DRAM sections */ + if (fw_has_capa(capa, IWL_UCODE_TLV_CAPA_FRAGMENTED_PNVM_IMG)) { + ret = iwl_pcie_load_payloads_segments(trans, + dram_regions, + payloads); + if (!ret) + trans->reduce_power_loaded = true; + } else { + /* save only in one DRAM section */ + ret = iwl_pcie_load_payloads_continuously + (trans, + payloads, + &dram_regions->drams[0]); + if (!ret) { + dram_regions->n_regions = 1; + trans->reduce_power_loaded = true; + } + } + + return ret; +} + +static void iwl_pcie_set_reduce_power_segments(struct iwl_trans *trans) +{ + struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); + struct iwl_prph_scratch_ctrl_cfg *prph_sc_ctrl = + &trans_pcie->prph_scratch->ctrl_cfg; + struct iwl_dram_regions *dram_regions = &trans_pcie->reduced_tables_data; + + prph_sc_ctrl->reduce_power_cfg.base_addr = + cpu_to_le64(dram_regions->prph_scratch_mem_desc.physical); + prph_sc_ctrl->reduce_power_cfg.size = + cpu_to_le32(iwl_dram_regions_size(dram_regions)); +} + +static void iwl_pcie_set_continuous_reduce_power(struct iwl_trans *trans) +{ + struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); + struct iwl_prph_scratch_ctrl_cfg *prph_sc_ctrl = + &trans_pcie->prph_scratch->ctrl_cfg; + + prph_sc_ctrl->reduce_power_cfg.base_addr = + cpu_to_le64(trans_pcie->reduced_tables_data.drams[0].physical); + prph_sc_ctrl->reduce_power_cfg.size = + cpu_to_le32(trans_pcie->reduced_tables_data.drams[0].size); +} + +void +iwl_trans_pcie_ctx_info_gen3_set_reduce_power(struct iwl_trans *trans, + const struct iwl_ucode_capabilities *capa) +{ + if (trans->trans_cfg->device_family < IWL_DEVICE_FAMILY_AX210) + return; + + if (fw_has_capa(capa, IWL_UCODE_TLV_CAPA_FRAGMENTED_PNVM_IMG)) + iwl_pcie_set_reduce_power_segments(trans); + else + iwl_pcie_set_continuous_reduce_power(trans); +} + |