diff options
Diffstat (limited to 'drivers/net/wireless/intel/iwlwifi/pcie/internal.h')
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/pcie/internal.h | 1016 |
1 files changed, 0 insertions, 1016 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/internal.h b/drivers/net/wireless/intel/iwlwifi/pcie/internal.h deleted file mode 100644 index 55808ba10d27..000000000000 --- a/drivers/net/wireless/intel/iwlwifi/pcie/internal.h +++ /dev/null @@ -1,1016 +0,0 @@ -/****************************************************************************** - * - * This file is provided under a dual BSD/GPLv2 license. When using or - * redistributing this file, you may do so under either license. - * - * GPL LICENSE SUMMARY - * - * Copyright(c) 2003 - 2015 Intel Corporation. All rights reserved. - * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH - * Copyright(c) 2016 - 2017 Intel Deutschland GmbH - * Copyright(c) 2018 - 2019 Intel Corporation - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of version 2 of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - * - * The full GNU General Public License is included in this distribution in the - * file called COPYING. - * - * Contact Information: - * Intel Linux Wireless <linuxwifi@intel.com> - * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 - * - * BSD LICENSE - * - * Copyright(c) 2003 - 2015 Intel Corporation. All rights reserved. - * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH - * Copyright(c) 2016 - 2017 Intel Deutschland GmbH - * Copyright(c) 2018 - 2019 Intel Corporation - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * * Neither the name Intel Corporation nor the names of its - * contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - *****************************************************************************/ -#ifndef __iwl_trans_int_pcie_h__ -#define __iwl_trans_int_pcie_h__ - -#include <linux/spinlock.h> -#include <linux/interrupt.h> -#include <linux/skbuff.h> -#include <linux/wait.h> -#include <linux/pci.h> -#include <linux/timer.h> -#include <linux/cpu.h> - -#include "iwl-fh.h" -#include "iwl-csr.h" -#include "iwl-trans.h" -#include "iwl-debug.h" -#include "iwl-io.h" -#include "iwl-op-mode.h" -#include "iwl-drv.h" - -/* We need 2 entries for the TX command and header, and another one might - * be needed for potential data in the SKB's head. The remaining ones can - * be used for frags. - */ -#define IWL_PCIE_MAX_FRAGS(x) (x->max_tbs - 3) - -/* - * RX related structures and functions - */ -#define RX_NUM_QUEUES 1 -#define RX_POST_REQ_ALLOC 2 -#define RX_CLAIM_REQ_ALLOC 8 -#define RX_PENDING_WATERMARK 16 -#define FIRST_RX_QUEUE 512 - -struct iwl_host_cmd; - -/*This file includes the declaration that are internal to the - * trans_pcie layer */ - -/** - * struct iwl_rx_mem_buffer - * @page_dma: bus address of rxb page - * @page: driver's pointer to the rxb page - * @invalid: rxb is in driver ownership - not owned by HW - * @vid: index of this rxb in the global table - * @offset: indicates which offset of the page (in bytes) - * this buffer uses (if multiple RBs fit into one page) - */ -struct iwl_rx_mem_buffer { - dma_addr_t page_dma; - struct page *page; - u16 vid; - bool invalid; - struct list_head list; - u32 offset; -}; - -/** - * struct isr_statistics - interrupt statistics - * - */ -struct isr_statistics { - u32 hw; - u32 sw; - u32 err_code; - u32 sch; - u32 alive; - u32 rfkill; - u32 ctkill; - u32 wakeup; - u32 rx; - u32 tx; - u32 unhandled; -}; - -/** - * struct iwl_rx_transfer_desc - transfer descriptor - * @addr: ptr to free buffer start address - * @rbid: unique tag of the buffer - * @reserved: reserved - */ -struct iwl_rx_transfer_desc { - __le16 rbid; - __le16 reserved[3]; - __le64 addr; -} __packed; - -#define IWL_RX_CD_FLAGS_FRAGMENTED BIT(0) - -/** - * struct iwl_rx_completion_desc - completion descriptor - * @reserved1: reserved - * @rbid: unique tag of the received buffer - * @flags: flags (0: fragmented, all others: reserved) - * @reserved2: reserved - */ -struct iwl_rx_completion_desc { - __le32 reserved1; - __le16 rbid; - u8 flags; - u8 reserved2[25]; -} __packed; - -/** - * struct iwl_rxq - Rx queue - * @id: queue index - * @bd: driver's pointer to buffer of receive buffer descriptors (rbd). - * Address size is 32 bit in pre-9000 devices and 64 bit in 9000 devices. - * In AX210 devices it is a pointer to a list of iwl_rx_transfer_desc's - * @bd_dma: bus address of buffer of receive buffer descriptors (rbd) - * @ubd: driver's pointer to buffer of used receive buffer descriptors (rbd) - * @ubd_dma: physical address of buffer of used receive buffer descriptors (rbd) - * @tr_tail: driver's pointer to the transmission ring tail buffer - * @tr_tail_dma: physical address of the buffer for the transmission ring tail - * @cr_tail: driver's pointer to the completion ring tail buffer - * @cr_tail_dma: physical address of the buffer for the completion ring tail - * @read: Shared index to newest available Rx buffer - * @write: Shared index to oldest written Rx packet - * @free_count: Number of pre-allocated buffers in rx_free - * @used_count: Number of RBDs handled to allocator to use for allocation - * @write_actual: - * @rx_free: list of RBDs with allocated RB ready for use - * @rx_used: list of RBDs with no RB attached - * @need_update: flag to indicate we need to update read/write index - * @rb_stts: driver's pointer to receive buffer status - * @rb_stts_dma: bus address of receive buffer status - * @lock: - * @queue: actual rx queue. Not used for multi-rx queue. - * @next_rb_is_fragment: indicates that the previous RB that we handled set - * the fragmented flag, so the next one is still another fragment - * - * NOTE: rx_free and rx_used are used as a FIFO for iwl_rx_mem_buffers - */ -struct iwl_rxq { - int id; - void *bd; - dma_addr_t bd_dma; - union { - void *used_bd; - __le32 *bd_32; - struct iwl_rx_completion_desc *cd; - }; - dma_addr_t used_bd_dma; - __le16 *tr_tail; - dma_addr_t tr_tail_dma; - __le16 *cr_tail; - dma_addr_t cr_tail_dma; - u32 read; - u32 write; - u32 free_count; - u32 used_count; - u32 write_actual; - u32 queue_size; - struct list_head rx_free; - struct list_head rx_used; - bool need_update, next_rb_is_fragment; - void *rb_stts; - dma_addr_t rb_stts_dma; - spinlock_t lock; - struct napi_struct napi; - struct iwl_rx_mem_buffer *queue[RX_QUEUE_SIZE]; -}; - -/** - * struct iwl_rb_allocator - Rx allocator - * @req_pending: number of requests the allcator had not processed yet - * @req_ready: number of requests honored and ready for claiming - * @rbd_allocated: RBDs with pages allocated and ready to be handled to - * the queue. This is a list of &struct iwl_rx_mem_buffer - * @rbd_empty: RBDs with no page attached for allocator use. This is a list - * of &struct iwl_rx_mem_buffer - * @lock: protects the rbd_allocated and rbd_empty lists - * @alloc_wq: work queue for background calls - * @rx_alloc: work struct for background calls - */ -struct iwl_rb_allocator { - atomic_t req_pending; - atomic_t req_ready; - struct list_head rbd_allocated; - struct list_head rbd_empty; - spinlock_t lock; - struct workqueue_struct *alloc_wq; - struct work_struct rx_alloc; -}; - -/** - * iwl_queue_inc_wrap - increment queue index, wrap back to beginning - * @index -- current index - */ -static inline int iwl_queue_inc_wrap(struct iwl_trans *trans, int index) -{ - return ++index & - (trans->trans_cfg->base_params->max_tfd_queue_size - 1); -} - -/** - * iwl_get_closed_rb_stts - get closed rb stts from different structs - * @rxq - the rxq to get the rb stts from - */ -static inline __le16 iwl_get_closed_rb_stts(struct iwl_trans *trans, - struct iwl_rxq *rxq) -{ - if (trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_AX210) { - __le16 *rb_stts = rxq->rb_stts; - - return READ_ONCE(*rb_stts); - } else { - struct iwl_rb_status *rb_stts = rxq->rb_stts; - - return READ_ONCE(rb_stts->closed_rb_num); - } -} - -/** - * iwl_queue_dec_wrap - decrement queue index, wrap back to end - * @index -- current index - */ -static inline int iwl_queue_dec_wrap(struct iwl_trans *trans, int index) -{ - return --index & - (trans->trans_cfg->base_params->max_tfd_queue_size - 1); -} - -static inline dma_addr_t -iwl_pcie_get_first_tb_dma(struct iwl_txq *txq, int idx) -{ - return txq->first_tb_dma + - sizeof(struct iwl_pcie_first_tb_buf) * idx; -} - -struct iwl_tso_hdr_page { - struct page *page; - u8 *pos; -}; - -#ifdef CONFIG_IWLWIFI_DEBUGFS -/** - * enum iwl_fw_mon_dbgfs_state - the different states of the monitor_data - * debugfs file - * - * @IWL_FW_MON_DBGFS_STATE_CLOSED: the file is closed. - * @IWL_FW_MON_DBGFS_STATE_OPEN: the file is open. - * @IWL_FW_MON_DBGFS_STATE_DISABLED: the file is disabled, once this state is - * set the file can no longer be used. - */ -enum iwl_fw_mon_dbgfs_state { - IWL_FW_MON_DBGFS_STATE_CLOSED, - IWL_FW_MON_DBGFS_STATE_OPEN, - IWL_FW_MON_DBGFS_STATE_DISABLED, -}; -#endif - -/** - * enum iwl_shared_irq_flags - level of sharing for irq - * @IWL_SHARED_IRQ_NON_RX: interrupt vector serves non rx causes. - * @IWL_SHARED_IRQ_FIRST_RSS: interrupt vector serves first RSS queue. - */ -enum iwl_shared_irq_flags { - IWL_SHARED_IRQ_NON_RX = BIT(0), - IWL_SHARED_IRQ_FIRST_RSS = BIT(1), -}; - -/** - * enum iwl_image_response_code - image response values - * @IWL_IMAGE_RESP_DEF: the default value of the register - * @IWL_IMAGE_RESP_SUCCESS: iml was read successfully - * @IWL_IMAGE_RESP_FAIL: iml reading failed - */ -enum iwl_image_response_code { - IWL_IMAGE_RESP_DEF = 0, - IWL_IMAGE_RESP_SUCCESS = 1, - IWL_IMAGE_RESP_FAIL = 2, -}; - -/** - * struct cont_rec: continuous recording data structure - * @prev_wr_ptr: the last address that was read in monitor_data - * debugfs file - * @prev_wrap_cnt: the wrap count that was used during the last read in - * monitor_data debugfs file - * @state: the state of monitor_data debugfs file as described - * in &iwl_fw_mon_dbgfs_state enum - * @mutex: locked while reading from monitor_data debugfs file - */ -#ifdef CONFIG_IWLWIFI_DEBUGFS -struct cont_rec { - u32 prev_wr_ptr; - u32 prev_wrap_cnt; - u8 state; - /* Used to sync monitor_data debugfs file with driver unload flow */ - struct mutex mutex; -}; -#endif - -/** - * struct iwl_trans_pcie - PCIe transport specific data - * @rxq: all the RX queue data - * @rx_pool: initial pool of iwl_rx_mem_buffer for all the queues - * @global_table: table mapping received VID from hw to rxb - * @rba: allocator for RX replenishing - * @ctxt_info: context information for FW self init - * @ctxt_info_gen3: context information for gen3 devices - * @prph_info: prph info for self init - * @prph_scratch: prph scratch for self init - * @ctxt_info_dma_addr: dma addr of context information - * @prph_info_dma_addr: dma addr of prph info - * @prph_scratch_dma_addr: dma addr of prph scratch - * @ctxt_info_dma_addr: dma addr of context information - * @init_dram: DRAM data of firmware image (including paging). - * Context information addresses will be taken from here. - * This is driver's local copy for keeping track of size and - * count for allocating and freeing the memory. - * @trans: pointer to the generic transport area - * @scd_base_addr: scheduler sram base address in SRAM - * @scd_bc_tbls: pointer to the byte count table of the scheduler - * @kw: keep warm address - * @pci_dev: basic pci-network driver stuff - * @hw_base: pci hardware address support - * @ucode_write_complete: indicates that the ucode has been copied. - * @ucode_write_waitq: wait queue for uCode load - * @cmd_queue - command queue number - * @def_rx_queue - default rx queue number - * @rx_buf_size: Rx buffer size - * @bc_table_dword: true if the BC table expects DWORD (as opposed to bytes) - * @scd_set_active: should the transport configure the SCD for HCMD queue - * @sw_csum_tx: if true, then the transport will compute the csum of the TXed - * frame. - * @rx_page_order: page order for receive buffer size - * @rx_buf_bytes: RX buffer (RB) size in bytes - * @reg_lock: protect hw register access - * @mutex: to protect stop_device / start_fw / start_hw - * @cmd_in_flight: true when we have a host command in flight -#ifdef CONFIG_IWLWIFI_DEBUGFS - * @fw_mon_data: fw continuous recording data -#endif - * @msix_entries: array of MSI-X entries - * @msix_enabled: true if managed to enable MSI-X - * @shared_vec_mask: the type of causes the shared vector handles - * (see iwl_shared_irq_flags). - * @alloc_vecs: the number of interrupt vectors allocated by the OS - * @def_irq: default irq for non rx causes - * @fh_init_mask: initial unmasked fh causes - * @hw_init_mask: initial unmasked hw causes - * @fh_mask: current unmasked fh causes - * @hw_mask: current unmasked hw causes - * @in_rescan: true if we have triggered a device rescan - * @base_rb_stts: base virtual address of receive buffer status for all queues - * @base_rb_stts_dma: base physical address of receive buffer status - * @supported_dma_mask: DMA mask to validate the actual address against, - * will be DMA_BIT_MASK(11) or DMA_BIT_MASK(12) depending on the device - * @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) - */ -struct iwl_trans_pcie { - struct iwl_rxq *rxq; - struct iwl_rx_mem_buffer *rx_pool; - struct iwl_rx_mem_buffer **global_table; - struct iwl_rb_allocator rba; - union { - struct iwl_context_info *ctxt_info; - struct iwl_context_info_gen3 *ctxt_info_gen3; - }; - struct iwl_prph_info *prph_info; - struct iwl_prph_scratch *prph_scratch; - dma_addr_t ctxt_info_dma_addr; - dma_addr_t prph_info_dma_addr; - dma_addr_t prph_scratch_dma_addr; - dma_addr_t iml_dma_addr; - struct iwl_trans *trans; - - struct net_device napi_dev; - - struct __percpu iwl_tso_hdr_page *tso_hdr_page; - - /* INT ICT Table */ - __le32 *ict_tbl; - dma_addr_t ict_tbl_dma; - int ict_index; - bool use_ict; - bool is_down, opmode_down; - s8 debug_rfkill; - struct isr_statistics isr_stats; - - spinlock_t irq_lock; - struct mutex mutex; - u32 inta_mask; - u32 scd_base_addr; - struct iwl_dma_ptr scd_bc_tbls; - struct iwl_dma_ptr kw; - struct dma_pool *bc_pool; - - struct iwl_txq *txq_memory; - - /* PCI bus related data */ - struct pci_dev *pci_dev; - void __iomem *hw_base; - - bool ucode_write_complete; - bool sx_complete; - wait_queue_head_t ucode_write_waitq; - wait_queue_head_t wait_command_queue; - wait_queue_head_t sx_waitq; - - u8 page_offs, dev_cmd_offs; - - u8 def_rx_queue; - u8 n_no_reclaim_cmds; - u8 no_reclaim_cmds[MAX_NO_RECLAIM_CMDS]; - u8 max_tbs; - u16 tfd_size; - u16 num_rx_bufs; - - enum iwl_amsdu_size rx_buf_size; - bool bc_table_dword; - bool scd_set_active; - bool sw_csum_tx; - bool pcie_dbg_dumped_once; - u32 rx_page_order; - u32 rx_buf_bytes; - u32 supported_dma_mask; - - /* allocator lock for the two values below */ - spinlock_t alloc_page_lock; - struct page *alloc_page; - u32 alloc_page_used; - - /*protect hw register */ - spinlock_t reg_lock; - bool cmd_hold_nic_awake; - -#ifdef CONFIG_IWLWIFI_DEBUGFS - struct cont_rec fw_mon_data; -#endif - - struct msix_entry msix_entries[IWL_MAX_RX_HW_QUEUES]; - bool msix_enabled; - u8 shared_vec_mask; - u32 alloc_vecs; - u32 def_irq; - u32 fh_init_mask; - u32 hw_init_mask; - u32 fh_mask; - u32 hw_mask; - cpumask_t affinity_mask[IWL_MAX_RX_HW_QUEUES]; - u16 tx_cmd_queue_size; - bool in_rescan; - - void *base_rb_stts; - dma_addr_t base_rb_stts_dma; -}; - -static inline struct iwl_trans_pcie * -IWL_TRANS_GET_PCIE_TRANS(struct iwl_trans *trans) -{ - return (void *)trans->trans_specific; -} - -static inline void iwl_pcie_clear_irq(struct iwl_trans *trans, - struct msix_entry *entry) -{ - /* - * Before sending the interrupt the HW disables it to prevent - * a nested interrupt. This is done by writing 1 to the corresponding - * bit in the mask register. After handling the interrupt, it should be - * re-enabled by clearing this bit. This register is defined as - * write 1 clear (W1C) register, meaning that it's being clear - * by writing 1 to the bit. - */ - iwl_write32(trans, CSR_MSIX_AUTOMASK_ST_AD, BIT(entry->entry)); -} - -static inline struct iwl_trans * -iwl_trans_pcie_get_trans(struct iwl_trans_pcie *trans_pcie) -{ - return container_of((void *)trans_pcie, struct iwl_trans, - trans_specific); -} - -/* - * Convention: trans API functions: iwl_trans_pcie_XXX - * Other functions: iwl_pcie_XXX - */ -struct iwl_trans -*iwl_trans_pcie_alloc(struct pci_dev *pdev, - const struct pci_device_id *ent, - const struct iwl_cfg_trans_params *cfg_trans); -void iwl_trans_pcie_free(struct iwl_trans *trans); - -/***************************************************** -* RX -******************************************************/ -int iwl_pcie_rx_init(struct iwl_trans *trans); -int iwl_pcie_gen2_rx_init(struct iwl_trans *trans); -irqreturn_t iwl_pcie_msix_isr(int irq, void *data); -irqreturn_t iwl_pcie_irq_handler(int irq, void *dev_id); -irqreturn_t iwl_pcie_irq_msix_handler(int irq, void *dev_id); -irqreturn_t iwl_pcie_irq_rx_msix_handler(int irq, void *dev_id); -int iwl_pcie_rx_stop(struct iwl_trans *trans); -void iwl_pcie_rx_free(struct iwl_trans *trans); -void iwl_pcie_free_rbs_pool(struct iwl_trans *trans); -void iwl_pcie_rx_init_rxb_lists(struct iwl_rxq *rxq); -int iwl_pcie_dummy_napi_poll(struct napi_struct *napi, int budget); -void iwl_pcie_rxq_alloc_rbs(struct iwl_trans *trans, gfp_t priority, - struct iwl_rxq *rxq); - -/***************************************************** -* ICT - interrupt handling -******************************************************/ -irqreturn_t iwl_pcie_isr(int irq, void *data); -int iwl_pcie_alloc_ict(struct iwl_trans *trans); -void iwl_pcie_free_ict(struct iwl_trans *trans); -void iwl_pcie_reset_ict(struct iwl_trans *trans); -void iwl_pcie_disable_ict(struct iwl_trans *trans); - -/***************************************************** -* TX / HCMD -******************************************************/ -/* - * We need this inline in case dma_addr_t is only 32-bits - since the - * hardware is always 64-bit, the issue can still occur in that case, - * so use u64 for 'phys' here to force the addition in 64-bit. - */ -static inline bool iwl_pcie_crosses_4g_boundary(u64 phys, u16 len) -{ - return upper_32_bits(phys) != upper_32_bits(phys + len); -} - -int iwl_pcie_tx_init(struct iwl_trans *trans); -int iwl_pcie_gen2_tx_init(struct iwl_trans *trans, int txq_id, - int queue_size); -void iwl_pcie_tx_start(struct iwl_trans *trans, u32 scd_base_addr); -int iwl_pcie_tx_stop(struct iwl_trans *trans); -void iwl_pcie_tx_free(struct iwl_trans *trans); -bool iwl_trans_pcie_txq_enable(struct iwl_trans *trans, int queue, u16 ssn, - const struct iwl_trans_txq_scd_cfg *cfg, - unsigned int wdg_timeout); -void iwl_trans_pcie_txq_disable(struct iwl_trans *trans, int queue, - bool configure_scd); -void iwl_trans_pcie_txq_set_shared_mode(struct iwl_trans *trans, u32 txq_id, - bool shared_mode); -void iwl_trans_pcie_log_scd_error(struct iwl_trans *trans, - struct iwl_txq *txq); -int iwl_trans_pcie_tx(struct iwl_trans *trans, struct sk_buff *skb, - struct iwl_device_tx_cmd *dev_cmd, int txq_id); -void iwl_pcie_txq_check_wrptrs(struct iwl_trans *trans); -int iwl_trans_pcie_send_hcmd(struct iwl_trans *trans, struct iwl_host_cmd *cmd); -void iwl_pcie_gen2_txq_inc_wr_ptr(struct iwl_trans *trans, - struct iwl_txq *txq); -void iwl_pcie_hcmd_complete(struct iwl_trans *trans, - struct iwl_rx_cmd_buffer *rxb); -void iwl_trans_pcie_reclaim(struct iwl_trans *trans, int txq_id, int ssn, - struct sk_buff_head *skbs); -void iwl_trans_pcie_set_q_ptrs(struct iwl_trans *trans, int txq_id, int ptr); -void iwl_trans_pcie_tx_reset(struct iwl_trans *trans); - -static inline u16 iwl_pcie_tfd_tb_get_len(struct iwl_trans *trans, void *_tfd, - u8 idx) -{ - if (trans->trans_cfg->use_tfh) { - struct iwl_tfh_tfd *tfd = _tfd; - struct iwl_tfh_tb *tb = &tfd->tbs[idx]; - - return le16_to_cpu(tb->tb_len); - } else { - struct iwl_tfd *tfd = _tfd; - struct iwl_tfd_tb *tb = &tfd->tbs[idx]; - - return le16_to_cpu(tb->hi_n_len) >> 4; - } -} - -/***************************************************** -* Error handling -******************************************************/ -void iwl_pcie_dump_csr(struct iwl_trans *trans); - -/***************************************************** -* Helpers -******************************************************/ -static inline void _iwl_disable_interrupts(struct iwl_trans *trans) -{ - struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); - - clear_bit(STATUS_INT_ENABLED, &trans->status); - if (!trans_pcie->msix_enabled) { - /* disable interrupts from uCode/NIC to host */ - iwl_write32(trans, CSR_INT_MASK, 0x00000000); - - /* acknowledge/clear/reset any interrupts still pending - * from uCode or flow handler (Rx/Tx DMA) */ - iwl_write32(trans, CSR_INT, 0xffffffff); - iwl_write32(trans, CSR_FH_INT_STATUS, 0xffffffff); - } else { - /* disable all the interrupt we might use */ - iwl_write32(trans, CSR_MSIX_FH_INT_MASK_AD, - trans_pcie->fh_init_mask); - iwl_write32(trans, CSR_MSIX_HW_INT_MASK_AD, - trans_pcie->hw_init_mask); - } - IWL_DEBUG_ISR(trans, "Disabled interrupts\n"); -} - -#define IWL_NUM_OF_COMPLETION_RINGS 31 -#define IWL_NUM_OF_TRANSFER_RINGS 527 - -static inline int iwl_pcie_get_num_sections(const struct fw_img *fw, - int start) -{ - int i = 0; - - while (start < fw->num_sec && - fw->sec[start].offset != CPU1_CPU2_SEPARATOR_SECTION && - fw->sec[start].offset != PAGING_SEPARATOR_SECTION) { - start++; - i++; - } - - return i; -} - -static inline void iwl_pcie_ctxt_info_free_fw_img(struct iwl_trans *trans) -{ - struct iwl_self_init_dram *dram = &trans->init_dram; - int i; - - if (!dram->fw) { - WARN_ON(dram->fw_cnt); - return; - } - - for (i = 0; i < dram->fw_cnt; i++) - dma_free_coherent(trans->dev, dram->fw[i].size, - dram->fw[i].block, dram->fw[i].physical); - - kfree(dram->fw); - dram->fw_cnt = 0; - dram->fw = NULL; -} - -static inline void iwl_disable_interrupts(struct iwl_trans *trans) -{ - struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); - - spin_lock(&trans_pcie->irq_lock); - _iwl_disable_interrupts(trans); - spin_unlock(&trans_pcie->irq_lock); -} - -static inline void _iwl_enable_interrupts(struct iwl_trans *trans) -{ - struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); - - IWL_DEBUG_ISR(trans, "Enabling interrupts\n"); - set_bit(STATUS_INT_ENABLED, &trans->status); - if (!trans_pcie->msix_enabled) { - trans_pcie->inta_mask = CSR_INI_SET_MASK; - iwl_write32(trans, CSR_INT_MASK, trans_pcie->inta_mask); - } else { - /* - * fh/hw_mask keeps all the unmasked causes. - * Unlike msi, in msix cause is enabled when it is unset. - */ - trans_pcie->hw_mask = trans_pcie->hw_init_mask; - trans_pcie->fh_mask = trans_pcie->fh_init_mask; - iwl_write32(trans, CSR_MSIX_FH_INT_MASK_AD, - ~trans_pcie->fh_mask); - iwl_write32(trans, CSR_MSIX_HW_INT_MASK_AD, - ~trans_pcie->hw_mask); - } -} - -static inline void iwl_enable_interrupts(struct iwl_trans *trans) -{ - struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); - - spin_lock(&trans_pcie->irq_lock); - _iwl_enable_interrupts(trans); - spin_unlock(&trans_pcie->irq_lock); -} -static inline void iwl_enable_hw_int_msk_msix(struct iwl_trans *trans, u32 msk) -{ - struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); - - iwl_write32(trans, CSR_MSIX_HW_INT_MASK_AD, ~msk); - trans_pcie->hw_mask = msk; -} - -static inline void iwl_enable_fh_int_msk_msix(struct iwl_trans *trans, u32 msk) -{ - struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); - - iwl_write32(trans, CSR_MSIX_FH_INT_MASK_AD, ~msk); - trans_pcie->fh_mask = msk; -} - -static inline void iwl_enable_fw_load_int(struct iwl_trans *trans) -{ - struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); - - IWL_DEBUG_ISR(trans, "Enabling FW load interrupt\n"); - if (!trans_pcie->msix_enabled) { - trans_pcie->inta_mask = CSR_INT_BIT_FH_TX; - iwl_write32(trans, CSR_INT_MASK, trans_pcie->inta_mask); - } else { - iwl_write32(trans, CSR_MSIX_HW_INT_MASK_AD, - trans_pcie->hw_init_mask); - iwl_enable_fh_int_msk_msix(trans, - MSIX_FH_INT_CAUSES_D2S_CH0_NUM); - } -} - -static inline void iwl_enable_fw_load_int_ctx_info(struct iwl_trans *trans) -{ - struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); - - IWL_DEBUG_ISR(trans, "Enabling ALIVE interrupt only\n"); - - if (!trans_pcie->msix_enabled) { - /* - * When we'll receive the ALIVE interrupt, the ISR will call - * iwl_enable_fw_load_int_ctx_info again to set the ALIVE - * interrupt (which is not really needed anymore) but also the - * RX interrupt which will allow us to receive the ALIVE - * notification (which is Rx) and continue the flow. - */ - trans_pcie->inta_mask = CSR_INT_BIT_ALIVE | CSR_INT_BIT_FH_RX; - iwl_write32(trans, CSR_INT_MASK, trans_pcie->inta_mask); - } else { - iwl_enable_hw_int_msk_msix(trans, - MSIX_HW_INT_CAUSES_REG_ALIVE); - /* - * Leave all the FH causes enabled to get the ALIVE - * notification. - */ - iwl_enable_fh_int_msk_msix(trans, trans_pcie->fh_init_mask); - } -} - -static inline u16 iwl_pcie_get_cmd_index(const struct iwl_txq *q, u32 index) -{ - return index & (q->n_window - 1); -} - -static inline void *iwl_pcie_get_tfd(struct iwl_trans *trans, - struct iwl_txq *txq, int idx) -{ - struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); - - if (trans->trans_cfg->use_tfh) - idx = iwl_pcie_get_cmd_index(txq, idx); - - return txq->tfds + trans_pcie->tfd_size * idx; -} - -static inline const char *queue_name(struct device *dev, - struct iwl_trans_pcie *trans_p, int i) -{ - if (trans_p->shared_vec_mask) { - int vec = trans_p->shared_vec_mask & - IWL_SHARED_IRQ_FIRST_RSS ? 1 : 0; - - if (i == 0) - return DRV_NAME ": shared IRQ"; - - return devm_kasprintf(dev, GFP_KERNEL, - DRV_NAME ": queue %d", i + vec); - } - if (i == 0) - return DRV_NAME ": default queue"; - - if (i == trans_p->alloc_vecs - 1) - return DRV_NAME ": exception"; - - return devm_kasprintf(dev, GFP_KERNEL, - DRV_NAME ": queue %d", i); -} - -static inline void iwl_enable_rfkill_int(struct iwl_trans *trans) -{ - struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); - - IWL_DEBUG_ISR(trans, "Enabling rfkill interrupt\n"); - if (!trans_pcie->msix_enabled) { - trans_pcie->inta_mask = CSR_INT_BIT_RF_KILL; - iwl_write32(trans, CSR_INT_MASK, trans_pcie->inta_mask); - } else { - iwl_write32(trans, CSR_MSIX_FH_INT_MASK_AD, - trans_pcie->fh_init_mask); - iwl_enable_hw_int_msk_msix(trans, - MSIX_HW_INT_CAUSES_REG_RF_KILL); - } - - if (trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_9000) { - /* - * On 9000-series devices this bit isn't enabled by default, so - * when we power down the device we need set the bit to allow it - * to wake up the PCI-E bus for RF-kill interrupts. - */ - iwl_set_bit(trans, CSR_GP_CNTRL, - CSR_GP_CNTRL_REG_FLAG_RFKILL_WAKE_L1A_EN); - } -} - -void iwl_pcie_handle_rfkill_irq(struct iwl_trans *trans); - -static inline void iwl_wake_queue(struct iwl_trans *trans, - struct iwl_txq *txq) -{ - if (test_and_clear_bit(txq->id, trans->txqs.queue_stopped)) { - IWL_DEBUG_TX_QUEUES(trans, "Wake hwq %d\n", txq->id); - iwl_op_mode_queue_not_full(trans->op_mode, txq->id); - } -} - -static inline void iwl_stop_queue(struct iwl_trans *trans, - struct iwl_txq *txq) -{ - if (!test_and_set_bit(txq->id, trans->txqs.queue_stopped)) { - iwl_op_mode_queue_full(trans->op_mode, txq->id); - IWL_DEBUG_TX_QUEUES(trans, "Stop hwq %d\n", txq->id); - } else - IWL_DEBUG_TX_QUEUES(trans, "hwq %d already stopped\n", - txq->id); -} - -static inline bool iwl_queue_used(const struct iwl_txq *q, int i) -{ - int index = iwl_pcie_get_cmd_index(q, i); - int r = iwl_pcie_get_cmd_index(q, q->read_ptr); - int w = iwl_pcie_get_cmd_index(q, q->write_ptr); - - return w >= r ? - (index >= r && index < w) : - !(index < r && index >= w); -} - -static inline bool iwl_is_rfkill_set(struct iwl_trans *trans) -{ - struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); - - lockdep_assert_held(&trans_pcie->mutex); - - if (trans_pcie->debug_rfkill == 1) - return true; - - return !(iwl_read32(trans, CSR_GP_CNTRL) & - CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW); -} - -static inline void __iwl_trans_pcie_set_bits_mask(struct iwl_trans *trans, - u32 reg, u32 mask, u32 value) -{ - u32 v; - -#ifdef CONFIG_IWLWIFI_DEBUG - WARN_ON_ONCE(value & ~mask); -#endif - - v = iwl_read32(trans, reg); - v &= ~mask; - v |= value; - iwl_write32(trans, reg, v); -} - -static inline void __iwl_trans_pcie_clear_bit(struct iwl_trans *trans, - u32 reg, u32 mask) -{ - __iwl_trans_pcie_set_bits_mask(trans, reg, mask, 0); -} - -static inline void __iwl_trans_pcie_set_bit(struct iwl_trans *trans, - u32 reg, u32 mask) -{ - __iwl_trans_pcie_set_bits_mask(trans, reg, mask, mask); -} - -static inline bool iwl_pcie_dbg_on(struct iwl_trans *trans) -{ - return (trans->dbg.dest_tlv || iwl_trans_dbg_ini_valid(trans)); -} - -void iwl_trans_pcie_rf_kill(struct iwl_trans *trans, bool state); -void iwl_trans_pcie_dump_regs(struct iwl_trans *trans); -void iwl_trans_pcie_sync_nmi(struct iwl_trans *trans); - -#ifdef CONFIG_IWLWIFI_DEBUGFS -void iwl_trans_pcie_dbgfs_register(struct iwl_trans *trans); -#else -static inline void iwl_trans_pcie_dbgfs_register(struct iwl_trans *trans) { } -#endif - -void iwl_pcie_rx_allocator_work(struct work_struct *data); - -/* common functions that are used by gen2 transport */ -int iwl_pcie_gen2_apm_init(struct iwl_trans *trans); -void iwl_pcie_apm_config(struct iwl_trans *trans); -int iwl_pcie_prepare_card_hw(struct iwl_trans *trans); -void iwl_pcie_synchronize_irqs(struct iwl_trans *trans); -bool iwl_pcie_check_hw_rf_kill(struct iwl_trans *trans); -void iwl_trans_pcie_handle_stop_rfkill(struct iwl_trans *trans, - bool was_in_rfkill); -void iwl_pcie_txq_free_tfd(struct iwl_trans *trans, struct iwl_txq *txq); -int iwl_queue_space(struct iwl_trans *trans, const struct iwl_txq *q); -void iwl_pcie_apm_stop_master(struct iwl_trans *trans); -void iwl_pcie_conf_msix_hw(struct iwl_trans_pcie *trans_pcie); -int iwl_pcie_txq_init(struct iwl_trans *trans, struct iwl_txq *txq, - int slots_num, bool cmd_queue); -int iwl_pcie_txq_alloc(struct iwl_trans *trans, - struct iwl_txq *txq, int slots_num, bool cmd_queue); -int iwl_pcie_alloc_dma_ptr(struct iwl_trans *trans, - struct iwl_dma_ptr *ptr, size_t size); -void iwl_pcie_free_dma_ptr(struct iwl_trans *trans, struct iwl_dma_ptr *ptr); -void iwl_pcie_apply_destination(struct iwl_trans *trans); -void iwl_pcie_free_tso_page(struct iwl_trans_pcie *trans_pcie, - struct sk_buff *skb); -#ifdef CONFIG_INET -struct iwl_tso_hdr_page *get_page_hdr(struct iwl_trans *trans, size_t len, - struct sk_buff *skb); -#endif - -/* common functions that are used by gen3 transport */ -void iwl_pcie_alloc_fw_monitor(struct iwl_trans *trans, u8 max_power); - -/* transport gen 2 exported functions */ -int iwl_trans_pcie_gen2_start_fw(struct iwl_trans *trans, - const struct fw_img *fw, bool run_in_rfkill); -void iwl_trans_pcie_gen2_fw_alive(struct iwl_trans *trans, u32 scd_addr); -void iwl_pcie_gen2_txq_free_memory(struct iwl_trans *trans, - struct iwl_txq *txq); -int iwl_trans_pcie_dyn_txq_alloc_dma(struct iwl_trans *trans, - struct iwl_txq **intxq, int size, - unsigned int timeout); -int iwl_trans_pcie_txq_alloc_response(struct iwl_trans *trans, - struct iwl_txq *txq, - struct iwl_host_cmd *hcmd); -int iwl_trans_pcie_dyn_txq_alloc(struct iwl_trans *trans, - __le16 flags, u8 sta_id, u8 tid, - int cmd_id, int size, - unsigned int timeout); -void iwl_trans_pcie_dyn_txq_free(struct iwl_trans *trans, int queue); -int iwl_trans_pcie_gen2_tx(struct iwl_trans *trans, struct sk_buff *skb, - struct iwl_device_tx_cmd *dev_cmd, int txq_id); -int iwl_trans_pcie_gen2_send_hcmd(struct iwl_trans *trans, - struct iwl_host_cmd *cmd); -void iwl_trans_pcie_gen2_stop_device(struct iwl_trans *trans); -void _iwl_trans_pcie_gen2_stop_device(struct iwl_trans *trans); -void iwl_pcie_gen2_txq_unmap(struct iwl_trans *trans, int txq_id); -void iwl_pcie_gen2_tx_free(struct iwl_trans *trans); -void iwl_pcie_gen2_tx_stop(struct iwl_trans *trans); -void iwl_pcie_d3_complete_suspend(struct iwl_trans *trans, - bool test, bool reset); -#endif /* __iwl_trans_int_pcie_h__ */ |