From patchwork Sat Jan 29 11:16:19 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Luca Coelho X-Patchwork-Id: 12729435 X-Patchwork-Delegate: luca@coelho.fi Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id AFC9CC433FE for ; Sat, 29 Jan 2022 11:16:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237545AbiA2LQh (ORCPT ); Sat, 29 Jan 2022 06:16:37 -0500 Received: from paleale.coelho.fi ([176.9.41.70]:37886 "EHLO farmhouse.coelho.fi" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S237273AbiA2LQf (ORCPT ); Sat, 29 Jan 2022 06:16:35 -0500 Received: from 91-156-4-210.elisa-laajakaista.fi ([91.156.4.210] helo=kveik.lan) by farmhouse.coelho.fi with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.95) (envelope-from ) id 1nDlia-0002ji-JR; Sat, 29 Jan 2022 13:16:34 +0200 From: Luca Coelho To: kvalo@kernel.org Cc: luca@coelho.fi, linux-wireless@vger.kernel.org Date: Sat, 29 Jan 2022 13:16:19 +0200 Message-Id: X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220129111622.678447-1-luca@coelho.fi> References: <20220129111622.678447-1-luca@coelho.fi> MIME-Version: 1.0 Subject: [PATCH 09/12] iwlwifi: yoyo: add IMR DRAM dump support Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org From: Mukesh Sisodiya Support debug collection of the platform IMR memory region, where data is copied by FW during d3 state Signed-off-by: Mukesh Sisodiya Signed-off-by: Luca Coelho --- drivers/net/wireless/intel/iwlwifi/fw/dbg.c | 97 ++++++++++++++++++- .../net/wireless/intel/iwlwifi/iwl-dbg-tlv.c | 8 ++ drivers/net/wireless/intel/iwlwifi/iwl-fh.h | 19 ++++ .../net/wireless/intel/iwlwifi/iwl-trans.h | 34 +++++++ drivers/net/wireless/intel/iwlwifi/mvm/fw.c | 30 ++++-- .../wireless/intel/iwlwifi/pcie/internal.h | 24 ++++- drivers/net/wireless/intel/iwlwifi/pcie/rx.c | 28 +++++- .../net/wireless/intel/iwlwifi/pcie/trans.c | 42 +++++++- 8 files changed, 269 insertions(+), 13 deletions(-) diff --git a/drivers/net/wireless/intel/iwlwifi/fw/dbg.c b/drivers/net/wireless/intel/iwlwifi/fw/dbg.c index 101d9085e835..d3e1c89d9be7 100644 --- a/drivers/net/wireless/intel/iwlwifi/fw/dbg.c +++ b/drivers/net/wireless/intel/iwlwifi/fw/dbg.c @@ -12,7 +12,7 @@ #include "iwl-io.h" #include "iwl-prph.h" #include "iwl-csr.h" - +#include "iwl-fh.h" /** * struct iwl_fw_dump_ptrs - set of pointers needed for the fw-error-dump * @@ -1598,6 +1598,33 @@ static int iwl_dump_ini_fw_pkt_iter(struct iwl_fw_runtime *fwrt, return sizeof(*range) + le32_to_cpu(range->range_data_size); } +static int iwl_dump_ini_imr_iter(struct iwl_fw_runtime *fwrt, + struct iwl_dump_ini_region_data *reg_data, + void *range_ptr, u32 range_len, int idx) +{ + /* read the IMR memory and DMA it to SRAM */ + struct iwl_fw_ini_error_dump_range *range = range_ptr; + u64 imr_curr_addr = fwrt->trans->dbg.imr_data.imr_curr_addr; + u32 imr_rem_bytes = fwrt->trans->dbg.imr_data.imr2sram_remainbyte; + u32 sram_addr = fwrt->trans->dbg.imr_data.sram_addr; + u32 sram_size = fwrt->trans->dbg.imr_data.sram_size; + u32 size_to_dump = (imr_rem_bytes > sram_size) ? sram_size : imr_rem_bytes; + + range->range_data_size = cpu_to_le32(size_to_dump); + if (iwl_trans_write_imr_mem(fwrt->trans, sram_addr, + imr_curr_addr, size_to_dump)) { + IWL_ERR(fwrt, "WRT_DEBUG: IMR Memory transfer failed\n"); + return -1; + } + + fwrt->trans->dbg.imr_data.imr_curr_addr = imr_curr_addr + size_to_dump; + fwrt->trans->dbg.imr_data.imr2sram_remainbyte -= size_to_dump; + + iwl_trans_read_mem_bytes(fwrt->trans, sram_addr, range->data, + size_to_dump); + return sizeof(*range) + le32_to_cpu(range->range_data_size); +} + static void * iwl_dump_ini_mem_fill_header(struct iwl_fw_runtime *fwrt, struct iwl_dump_ini_region_data *reg_data, @@ -1736,6 +1763,18 @@ iwl_dump_ini_special_mem_fill_header(struct iwl_fw_runtime *fwrt, return dump->data; } +static void * +iwl_dump_ini_imr_fill_header(struct iwl_fw_runtime *fwrt, + struct iwl_dump_ini_region_data *reg_data, + void *data, u32 data_len) +{ + struct iwl_fw_ini_error_dump *dump = data; + + dump->header.version = cpu_to_le32(IWL_INI_DUMP_VER); + + return dump->data; +} + static u32 iwl_dump_ini_mem_ranges(struct iwl_fw_runtime *fwrt, struct iwl_dump_ini_region_data *reg_data) { @@ -1795,6 +1834,26 @@ static u32 iwl_dump_ini_single_range(struct iwl_fw_runtime *fwrt, return 1; } +static u32 iwl_dump_ini_imr_ranges(struct iwl_fw_runtime *fwrt, + struct iwl_dump_ini_region_data *reg_data) +{ + /* range is total number of pages need to copied from + *IMR memory to SRAM and later from SRAM to DRAM + */ + u32 imr_enable = fwrt->trans->dbg.imr_data.imr_enable; + u32 imr_size = fwrt->trans->dbg.imr_data.imr_size; + u32 sram_size = fwrt->trans->dbg.imr_data.sram_size; + + if (imr_enable == 0 || imr_size == 0 || sram_size == 0) { + IWL_DEBUG_INFO(fwrt, + "WRT: Invalid imr data enable: %d, imr_size: %d, sram_size: %d\n", + imr_enable, imr_size, sram_size); + return 0; + } + + return((imr_size % sram_size) ? (imr_size / sram_size + 1) : (imr_size / sram_size)); +} + static u32 iwl_dump_ini_mem_get_size(struct iwl_fw_runtime *fwrt, struct iwl_dump_ini_region_data *reg_data) { @@ -1973,6 +2032,33 @@ iwl_dump_ini_fw_pkt_get_size(struct iwl_fw_runtime *fwrt, return size; } +static u32 +iwl_dump_ini_imr_get_size(struct iwl_fw_runtime *fwrt, + struct iwl_dump_ini_region_data *reg_data) +{ + u32 size = 0; + u32 ranges = 0; + u32 imr_enable = fwrt->trans->dbg.imr_data.imr_enable; + u32 imr_size = fwrt->trans->dbg.imr_data.imr_size; + u32 sram_size = fwrt->trans->dbg.imr_data.sram_size; + + if (imr_enable == 0 || imr_size == 0 || sram_size == 0) { + IWL_DEBUG_INFO(fwrt, + "WRT: Invalid imr data enable: %d, imr_size: %d, sram_size: %d\n", + imr_enable, imr_size, sram_size); + return size; + } + size = imr_size; + ranges = iwl_dump_ini_imr_ranges(fwrt, reg_data); + if (!size && !ranges) { + IWL_ERR(fwrt, "WRT: imr_size :=%d, ranges :=%d\n", size, ranges); + return 0; + } + size += sizeof(struct iwl_fw_ini_error_dump) + + ranges * sizeof(struct iwl_fw_ini_error_dump_range); + return size; +} + /** * struct iwl_dump_ini_mem_ops - ini memory dump operations * @get_num_of_ranges: returns the number of memory ranges in the region. @@ -2040,7 +2126,7 @@ static u32 iwl_dump_ini_mem(struct iwl_fw_runtime *fwrt, struct list_head *list, size = ops->get_size(fwrt, reg_data); if (size < sizeof(*header)) { - IWL_DEBUG_FW(fwrt, "WRT: size didn't include space for haeder\n"); + IWL_DEBUG_FW(fwrt, "WRT: size didn't include space for header\n"); return 0; } @@ -2295,7 +2381,12 @@ static const struct iwl_dump_ini_mem_ops iwl_dump_ini_region_ops[] = { .fill_mem_hdr = iwl_dump_ini_mem_fill_header, .fill_range = iwl_dump_ini_csr_iter, }, - [IWL_FW_INI_REGION_DRAM_IMR] = {}, + [IWL_FW_INI_REGION_DRAM_IMR] = { + .get_num_of_ranges = iwl_dump_ini_imr_ranges, + .get_size = iwl_dump_ini_imr_get_size, + .fill_mem_hdr = iwl_dump_ini_imr_fill_header, + .fill_range = iwl_dump_ini_imr_iter, + }, [IWL_FW_INI_REGION_PCI_IOSF_CONFIG] = { .get_num_of_ranges = iwl_dump_ini_mem_ranges, .get_size = iwl_dump_ini_mem_get_size, diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.c b/drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.c index 9a58eca7e2c8..9346cf92322e 100644 --- a/drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.c +++ b/drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.c @@ -211,6 +211,14 @@ static int iwl_dbg_tlv_alloc_region(struct iwl_trans *trans, return -EOPNOTSUPP; } + if (type == IWL_FW_INI_REGION_INTERNAL_BUFFER) { + trans->dbg.imr_data.sram_addr = + le32_to_cpu(reg->internal_buffer.base_addr); + trans->dbg.imr_data.sram_size = + le32_to_cpu(reg->internal_buffer.size); + } + + active_reg = &trans->dbg.active_regions[id]; if (*active_reg) { IWL_WARN(trans, "WRT: Overriding region id %u\n", id); diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-fh.h b/drivers/net/wireless/intel/iwlwifi/iwl-fh.h index 5558f9925e11..bedd78a47f67 100644 --- a/drivers/net/wireless/intel/iwlwifi/iwl-fh.h +++ b/drivers/net/wireless/intel/iwlwifi/iwl-fh.h @@ -596,6 +596,25 @@ struct iwl_rb_status { #define IWL_NUM_OF_TBS 20 #define IWL_TFH_NUM_TBS 25 +/* IMR DMA registers */ +#define IMR_TFH_SRV_DMA_CHNL0_CTRL 0x00a0a51c +#define IMR_TFH_SRV_DMA_CHNL0_SRAM_ADDR 0x00a0a520 +#define IMR_TFH_SRV_DMA_CHNL0_DRAM_ADDR_LSB 0x00a0a524 +#define IMR_TFH_SRV_DMA_CHNL0_DRAM_ADDR_MSB 0x00a0a528 +#define IMR_TFH_SRV_DMA_CHNL0_BC 0x00a0a52c +#define TFH_SRV_DMA_CHNL0_LEFT_BC 0x00a0a530 + +/* RFH S2D DMA registers */ +#define IMR_RFH_GEN_CFG_SERVICE_DMA_RS_MSK 0x0000000c +#define IMR_RFH_GEN_CFG_SERVICE_DMA_SNOOP_MSK 0x00000002 + +/* TFH D2S DMA registers */ +#define IMR_UREG_CHICK_HALT_UMAC_PERMANENTLY_MSK 0x80000000 +#define IMR_UREG_CHICK 0x00d05c00 +#define IMR_TFH_SRV_DMA_CHNL0_CTRL_D2S_IRQ_TARGET_POS 0x00800000 +#define IMR_TFH_SRV_DMA_CHNL0_CTRL_D2S_RS_MSK 0x00000030 +#define IMR_TFH_SRV_DMA_CHNL0_CTRL_D2S_DMA_EN_POS 0x80000000 + static inline u8 iwl_get_dma_hi_addr(dma_addr_t addr) { return (sizeof(addr) > sizeof(u32) ? upper_32_bits(addr) : 0) & 0xF; diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-trans.h b/drivers/net/wireless/intel/iwlwifi/iwl-trans.h index 1bcaa3598785..6a4d3eafdc19 100644 --- a/drivers/net/wireless/intel/iwlwifi/iwl-trans.h +++ b/drivers/net/wireless/intel/iwlwifi/iwl-trans.h @@ -615,6 +615,10 @@ struct iwl_trans_ops { int (*set_reduce_power)(struct iwl_trans *trans, const void *data, u32 len); void (*interrupts)(struct iwl_trans *trans, bool enable); + int (*imr_dma_data)(struct iwl_trans *trans, + u32 dst_addr, u64 src_addr, + u32 byte_cnt); + }; /** @@ -721,6 +725,26 @@ struct iwl_self_init_dram { int paging_cnt; }; +/** + * struct iwl_imr_data - imr dram data used during debug process + * @imr_enable: imr enable status received from fw + * @imr_size: imr dram size received from fw + * @sram_addr: sram address from debug tlv + * @sram_size: sram size from debug tlv + * @imr2sram_remainbyte`: size remained after each dma transfer + * @imr_curr_addr: current dst address used during dma transfer + * @imr_base_addr: imr address received from fw + */ +struct iwl_imr_data { + u32 imr_enable; + u32 imr_size; + u32 sram_addr; + u32 sram_size; + u32 imr2sram_remainbyte; + u64 imr_curr_addr; + __le64 imr_base_addr; +}; + /** * struct iwl_trans_debug - transport debug related data * @@ -785,6 +809,7 @@ struct iwl_trans_debug { u32 ucode_preset; bool restart_required; u32 last_tp_resetfw; + struct iwl_imr_data imr_data; }; struct iwl_dma_ptr { @@ -1368,6 +1393,15 @@ static inline int iwl_trans_read_mem(struct iwl_trans *trans, u32 addr, iwl_trans_read_mem(trans, addr, buf, (bufsize) / sizeof(u32));\ } while (0) +static inline int iwl_trans_write_imr_mem(struct iwl_trans *trans, + u32 dst_addr, u64 src_addr, + u32 byte_cnt) +{ + if (trans->ops->imr_dma_data) + return trans->ops->imr_dma_data(trans, dst_addr, src_addr, byte_cnt); + return 0; +} + static inline u32 iwl_trans_read_mem32(struct iwl_trans *trans, u32 addr) { u32 value; diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/fw.c b/drivers/net/wireless/intel/iwlwifi/mvm/fw.c index fcbe7c3656ad..14e067c834e8 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/fw.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/fw.c @@ -127,12 +127,30 @@ static bool iwl_alive_fn(struct iwl_notif_wait_data *notif_wait, u32 version = iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP, UCODE_ALIVE_NTFY, 0); - /* - * For v5 and above, we can check the version, for older - * versions we need to check the size. - */ - if (version == 5 || version == 6) { - /* v5 and v6 are compatible (only IMR addition) */ + if (version == 6) { + struct iwl_alive_ntf_v6 *palive; + + if (pkt_len < sizeof(*palive)) + return false; + + palive = (void *)pkt->data; + mvm->trans->dbg.imr_data.imr_enable = + le32_to_cpu(palive->imr.enabled); + mvm->trans->dbg.imr_data.imr_size = + le32_to_cpu(palive->imr.size); + mvm->trans->dbg.imr_data.imr2sram_remainbyte = + mvm->trans->dbg.imr_data.imr_size; + mvm->trans->dbg.imr_data.imr_base_addr = + palive->imr.base_addr; + mvm->trans->dbg.imr_data.imr_curr_addr = + le64_to_cpu(mvm->trans->dbg.imr_data.imr_base_addr); + IWL_DEBUG_FW(mvm, "IMR Enabled: 0x0%x size 0x0%x Address 0x%016llx\n", + mvm->trans->dbg.imr_data.imr_enable, + mvm->trans->dbg.imr_data.imr_size, + le64_to_cpu(mvm->trans->dbg.imr_data.imr_base_addr)); + } + + if (version >= 5) { struct iwl_alive_ntf_v5 *palive; if (pkt_len < sizeof(*palive)) diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/internal.h b/drivers/net/wireless/intel/iwlwifi/pcie/internal.h index 6dce36d32693..3cddc3e6db53 100644 --- a/drivers/net/wireless/intel/iwlwifi/pcie/internal.h +++ b/drivers/net/wireless/intel/iwlwifi/pcie/internal.h @@ -261,6 +261,20 @@ enum iwl_pcie_fw_reset_state { FW_RESET_ERROR, }; +/** + * enum wl_pcie_imr_status - imr dma transfer state + * @IMR_D2S_IDLE: default value of the dma transfer + * @IMR_D2S_REQUESTED: dma transfer requested + * @IMR_D2S_COMPLETED: dma transfer completed + * @IMR_D2S_ERROR: dma transfer error + */ +enum iwl_pcie_imr_status { + IMR_D2S_IDLE, + IMR_D2S_REQUESTED, + IMR_D2S_COMPLETED, + IMR_D2S_ERROR, +}; + /** * struct iwl_trans_pcie - PCIe transport specific data * @rxq: all the RX queue data @@ -319,6 +333,8 @@ enum iwl_pcie_fw_reset_state { * @alloc_page_lock: spinlock for the page allocator * @alloc_page: allocated page to still use parts of * @alloc_page_used: how much of the allocated page was already used (bytes) + * @imr_status: imr dma state machine + * @wait_queue_head_t: imr wait queue for dma completion * @rf_name: name/version of the CRF, if any */ struct iwl_trans_pcie { @@ -414,7 +430,8 @@ struct iwl_trans_pcie { bool fw_reset_handshake; enum iwl_pcie_fw_reset_state fw_reset_state; wait_queue_head_t fw_reset_waitq; - + enum iwl_pcie_imr_status imr_status; + wait_queue_head_t imr_waitq; char rf_name[32]; }; @@ -809,4 +826,9 @@ int iwl_pcie_gen2_enqueue_hcmd(struct iwl_trans *trans, struct iwl_host_cmd *cmd); int iwl_pcie_enqueue_hcmd(struct iwl_trans *trans, struct iwl_host_cmd *cmd); +void iwl_trans_pcie_copy_imr_fh(struct iwl_trans *trans, + u32 dst_addr, u64 src_addr, u32 byte_cnt); +int iwl_trans_pcie_copy_imr(struct iwl_trans *trans, + u32 dst_addr, u64 src_addr, u32 byte_cnt); + #endif /* __iwl_trans_int_pcie_h__ */ diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/rx.c b/drivers/net/wireless/intel/iwlwifi/pcie/rx.c index 21cddfc279d4..bda98c2eb0ad 100644 --- a/drivers/net/wireless/intel/iwlwifi/pcie/rx.c +++ b/drivers/net/wireless/intel/iwlwifi/pcie/rx.c @@ -1996,6 +1996,11 @@ irqreturn_t iwl_pcie_irq_handler(int irq, void *dev_id) /* Wake up uCode load routine, now that load is complete */ trans_pcie->ucode_write_complete = true; wake_up(&trans_pcie->ucode_write_waitq); + /* Wake up IMR write routine, now that write to SRAM is complete */ + if (trans_pcie->imr_status == IMR_D2S_REQUESTED) { + trans_pcie->imr_status = IMR_D2S_COMPLETED; + wake_up(&trans_pcie->ucode_write_waitq); + } } if (inta & ~handled) { @@ -2209,7 +2214,17 @@ irqreturn_t iwl_pcie_irq_msix_handler(int irq, void *dev_id) } /* This "Tx" DMA channel is used only for loading uCode */ - if (inta_fh & MSIX_FH_INT_CAUSES_D2S_CH0_NUM) { + if (inta_fh & MSIX_FH_INT_CAUSES_D2S_CH0_NUM && + trans_pcie->imr_status == IMR_D2S_REQUESTED) { + IWL_DEBUG_ISR(trans, "IMR Complete interrupt\n"); + isr_stats->tx++; + + /* Wake up IMR routine once write to SRAM is complete */ + if (trans_pcie->imr_status == IMR_D2S_REQUESTED) { + trans_pcie->imr_status = IMR_D2S_COMPLETED; + wake_up(&trans_pcie->ucode_write_waitq); + } + } else if (inta_fh & MSIX_FH_INT_CAUSES_D2S_CH0_NUM) { IWL_DEBUG_ISR(trans, "uCode load interrupt\n"); isr_stats->tx++; /* @@ -2218,6 +2233,12 @@ irqreturn_t iwl_pcie_irq_msix_handler(int irq, void *dev_id) */ trans_pcie->ucode_write_complete = true; wake_up(&trans_pcie->ucode_write_waitq); + + /* Wake up IMR routine once write to SRAM is complete */ + if (trans_pcie->imr_status == IMR_D2S_REQUESTED) { + trans_pcie->imr_status = IMR_D2S_COMPLETED; + wake_up(&trans_pcie->ucode_write_waitq); + } } if (trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_BZ) @@ -2232,7 +2253,10 @@ irqreturn_t iwl_pcie_irq_msix_handler(int irq, void *dev_id) inta_fh); isr_stats->sw++; /* during FW reset flow report errors from there */ - if (trans_pcie->fw_reset_state == FW_RESET_REQUESTED) { + if (trans_pcie->imr_status == IMR_D2S_REQUESTED) { + trans_pcie->imr_status = IMR_D2S_ERROR; + wake_up(&trans_pcie->imr_waitq); + } else if (trans_pcie->fw_reset_state == FW_RESET_REQUESTED) { trans_pcie->fw_reset_state = FW_RESET_ERROR; wake_up(&trans_pcie->fw_reset_waitq); } else { diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/trans.c b/drivers/net/wireless/intel/iwlwifi/pcie/trans.c index 94efaddfdcc4..cafc4d0e66b9 100644 --- a/drivers/net/wireless/intel/iwlwifi/pcie/trans.c +++ b/drivers/net/wireless/intel/iwlwifi/pcie/trans.c @@ -3469,7 +3469,8 @@ static void iwl_trans_pcie_sync_nmi(struct iwl_trans *trans) .d3_suspend = iwl_trans_pcie_d3_suspend, \ .d3_resume = iwl_trans_pcie_d3_resume, \ .interrupts = iwl_trans_pci_interrupts, \ - .sync_nmi = iwl_trans_pcie_sync_nmi \ + .sync_nmi = iwl_trans_pcie_sync_nmi, \ + .imr_dma_data = iwl_trans_pcie_copy_imr \ static const struct iwl_trans_ops trans_ops_pcie = { IWL_TRANS_COMMON_OPS, @@ -3554,6 +3555,7 @@ struct iwl_trans *iwl_trans_pcie_alloc(struct pci_dev *pdev, mutex_init(&trans_pcie->mutex); init_waitqueue_head(&trans_pcie->ucode_write_waitq); init_waitqueue_head(&trans_pcie->fw_reset_waitq); + init_waitqueue_head(&trans_pcie->imr_waitq); trans_pcie->rba.alloc_wq = alloc_workqueue("rb_allocator", WQ_HIGHPRI | WQ_UNBOUND, 1); @@ -3682,3 +3684,41 @@ struct iwl_trans *iwl_trans_pcie_alloc(struct pci_dev *pdev, iwl_trans_free(trans); return ERR_PTR(ret); } + +void iwl_trans_pcie_copy_imr_fh(struct iwl_trans *trans, + u32 dst_addr, u64 src_addr, u32 byte_cnt) +{ + iwl_write_prph(trans, IMR_UREG_CHICK, + iwl_read_prph(trans, IMR_UREG_CHICK) | + IMR_UREG_CHICK_HALT_UMAC_PERMANENTLY_MSK); + iwl_write_prph(trans, IMR_TFH_SRV_DMA_CHNL0_SRAM_ADDR, dst_addr); + iwl_write_prph(trans, IMR_TFH_SRV_DMA_CHNL0_DRAM_ADDR_LSB, + (u32)(src_addr & 0xFFFFFFFF)); + iwl_write_prph(trans, IMR_TFH_SRV_DMA_CHNL0_DRAM_ADDR_MSB, + iwl_get_dma_hi_addr(src_addr)); + iwl_write_prph(trans, IMR_TFH_SRV_DMA_CHNL0_BC, byte_cnt); + iwl_write_prph(trans, IMR_TFH_SRV_DMA_CHNL0_CTRL, + IMR_TFH_SRV_DMA_CHNL0_CTRL_D2S_IRQ_TARGET_POS | + IMR_TFH_SRV_DMA_CHNL0_CTRL_D2S_DMA_EN_POS | + IMR_TFH_SRV_DMA_CHNL0_CTRL_D2S_RS_MSK); +} + +int iwl_trans_pcie_copy_imr(struct iwl_trans *trans, + u32 dst_addr, u64 src_addr, u32 byte_cnt) +{ + struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); + int ret = -1; + + trans_pcie->imr_status = IMR_D2S_REQUESTED; + iwl_trans_pcie_copy_imr_fh(trans, dst_addr, src_addr, byte_cnt); + ret = wait_event_timeout(trans_pcie->imr_waitq, + trans_pcie->imr_status != + IMR_D2S_REQUESTED, 5 * HZ); + if (!ret || trans_pcie->imr_status == IMR_D2S_ERROR) { + IWL_ERR(trans, "Failed to copy IMR Memory chunk!\n"); + iwl_trans_pcie_dump_regs(trans); + return -ETIMEDOUT; + } + trans_pcie->imr_status = IMR_D2S_IDLE; + return 0; +}