| /****************************************************************************** |
| * |
| * Copyright(c) 2003 - 2015 Intel Corporation. All rights reserved. |
| * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH |
| * Copyright(c) 2016 - 2017 Intel Deutschland GmbH |
| * |
| * Portions of this file are derived from the ipw3945 project, as well |
| * as portions of the ieee80211 subsystem header files. |
| * |
| * 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. |
| * |
| * You should have received a copy of the GNU General Public License along with |
| * this program; if not, write to the Free Software Foundation, Inc., |
| * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA |
| * |
| * The full GNU General Public License is included in this distribution in the |
| * file called LICENSE. |
| * |
| * Contact Information: |
| * Intel Linux Wireless <linuxwifi@intel.com> |
| * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
| * |
| *****************************************************************************/ |
| #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" |
| |
| /* 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 |
| |
| 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 |
| */ |
| struct iwl_rx_mem_buffer { |
| dma_addr_t page_dma; |
| struct page *page; |
| u16 vid; |
| bool invalid; |
| struct list_head list; |
| }; |
| |
| /** |
| * 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_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. |
| * @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) |
| * @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. |
| * |
| * 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; |
| __le32 *used_bd; |
| dma_addr_t used_bd_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; |
| struct iwl_rb_status *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; |
| }; |
| |
| struct iwl_dma_ptr { |
| dma_addr_t dma; |
| void *addr; |
| size_t size; |
| }; |
| |
| /** |
| * iwl_queue_inc_wrap - increment queue index, wrap back to beginning |
| * @index -- current index |
| */ |
| static inline int iwl_queue_inc_wrap(int index) |
| { |
| return ++index & (TFD_QUEUE_SIZE_MAX - 1); |
| } |
| |
| /** |
| * iwl_queue_dec_wrap - decrement queue index, wrap back to end |
| * @index -- current index |
| */ |
| static inline int iwl_queue_dec_wrap(int index) |
| { |
| return --index & (TFD_QUEUE_SIZE_MAX - 1); |
| } |
| |
| struct iwl_cmd_meta { |
| /* only for SYNC commands, iff the reply skb is wanted */ |
| struct iwl_host_cmd *source; |
| u32 flags; |
| u32 tbs; |
| }; |
| |
| |
| #define TFD_TX_CMD_SLOTS 256 |
| #define TFD_CMD_SLOTS 32 |
| |
| /* |
| * The FH will write back to the first TB only, so we need to copy some data |
| * into the buffer regardless of whether it should be mapped or not. |
| * This indicates how big the first TB must be to include the scratch buffer |
| * and the assigned PN. |
| * Since PN location is 8 bytes at offset 12, it's 20 now. |
| * If we make it bigger then allocations will be bigger and copy slower, so |
| * that's probably not useful. |
| */ |
| #define IWL_FIRST_TB_SIZE 20 |
| #define IWL_FIRST_TB_SIZE_ALIGN ALIGN(IWL_FIRST_TB_SIZE, 64) |
| |
| struct iwl_pcie_txq_entry { |
| struct iwl_device_cmd *cmd; |
| struct sk_buff *skb; |
| /* buffer to free after command completes */ |
| const void *free_buf; |
| struct iwl_cmd_meta meta; |
| }; |
| |
| struct iwl_pcie_first_tb_buf { |
| u8 buf[IWL_FIRST_TB_SIZE_ALIGN]; |
| }; |
| |
| /** |
| * struct iwl_txq - Tx Queue for DMA |
| * @q: generic Rx/Tx queue descriptor |
| * @tfds: transmit frame descriptors (DMA memory) |
| * @first_tb_bufs: start of command headers, including scratch buffers, for |
| * the writeback -- this is DMA memory and an array holding one buffer |
| * for each command on the queue |
| * @first_tb_dma: DMA address for the first_tb_bufs start |
| * @entries: transmit entries (driver state) |
| * @lock: queue lock |
| * @stuck_timer: timer that fires if queue gets stuck |
| * @trans_pcie: pointer back to transport (for timer) |
| * @need_update: indicates need to update read/write index |
| * @ampdu: true if this queue is an ampdu queue for an specific RA/TID |
| * @wd_timeout: queue watchdog timeout (jiffies) - per queue |
| * @frozen: tx stuck queue timer is frozen |
| * @frozen_expiry_remainder: remember how long until the timer fires |
| * @bc_tbl: byte count table of the queue (relevant only for gen2 transport) |
| * @write_ptr: 1-st empty entry (index) host_w |
| * @read_ptr: last used entry (index) host_r |
| * @dma_addr: physical addr for BD's |
| * @n_window: safe queue window |
| * @id: queue id |
| * @low_mark: low watermark, resume queue if free space more than this |
| * @high_mark: high watermark, stop queue if free space less than this |
| * |
| * A Tx queue consists of circular buffer of BDs (a.k.a. TFDs, transmit frame |
| * descriptors) and required locking structures. |
| * |
| * Note the difference between TFD_QUEUE_SIZE_MAX and n_window: the hardware |
| * always assumes 256 descriptors, so TFD_QUEUE_SIZE_MAX is always 256 (unless |
| * there might be HW changes in the future). For the normal TX |
| * queues, n_window, which is the size of the software queue data |
| * is also 256; however, for the command queue, n_window is only |
| * 32 since we don't need so many commands pending. Since the HW |
| * still uses 256 BDs for DMA though, TFD_QUEUE_SIZE_MAX stays 256. |
| * This means that we end up with the following: |
| * HW entries: | 0 | ... | N * 32 | ... | N * 32 + 31 | ... | 255 | |
| * SW entries: | 0 | ... | 31 | |
| * where N is a number between 0 and 7. This means that the SW |
| * data is a window overlayed over the HW queue. |
| */ |
| struct iwl_txq { |
| void *tfds; |
| struct iwl_pcie_first_tb_buf *first_tb_bufs; |
| dma_addr_t first_tb_dma; |
| struct iwl_pcie_txq_entry *entries; |
| spinlock_t lock; |
| unsigned long frozen_expiry_remainder; |
| struct timer_list stuck_timer; |
| struct iwl_trans_pcie *trans_pcie; |
| bool need_update; |
| bool frozen; |
| bool ampdu; |
| int block; |
| unsigned long wd_timeout; |
| struct sk_buff_head overflow_q; |
| struct iwl_dma_ptr bc_tbl; |
| |
| int write_ptr; |
| int read_ptr; |
| dma_addr_t dma_addr; |
| int n_window; |
| u32 id; |
| int low_mark; |
| int high_mark; |
| }; |
| |
| 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; |
| }; |
| |
| /** |
| * 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), |
| }; |
| |
| /** |
| * struct iwl_dram_data |
| * @physical: page phy pointer |
| * @block: pointer to the allocated block/page |
| * @size: size of the block/page |
| */ |
| struct iwl_dram_data { |
| dma_addr_t physical; |
| void *block; |
| int size; |
| }; |
| |
| /** |
| * struct iwl_self_init_dram - dram data used by self init process |
| * @fw: lmac and umac dram data |
| * @fw_cnt: total number of items in array |
| * @paging: paging dram data |
| * @paging_cnt: total number of items in array |
| */ |
| struct iwl_self_init_dram { |
| struct iwl_dram_data *fw; |
| int fw_cnt; |
| struct iwl_dram_data *paging; |
| int paging_cnt; |
| }; |
| |
| /** |
| * 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_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 |
| * @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 |
| * @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 |
| * @fw_mon_phys: physical address of the buffer for the firmware monitor |
| * @fw_mon_page: points to the first page of the buffer for the firmware monitor |
| * @fw_mon_size: size of the buffer for the firmware monitor |
| * @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 |
| */ |
| struct iwl_trans_pcie { |
| struct iwl_rxq *rxq; |
| struct iwl_rx_mem_buffer rx_pool[RX_POOL_SIZE]; |
| struct iwl_rx_mem_buffer *global_table[RX_POOL_SIZE]; |
| struct iwl_rb_allocator rba; |
| struct iwl_context_info *ctxt_info; |
| dma_addr_t ctxt_info_dma_addr; |
| struct iwl_self_init_dram init_dram; |
| 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; |
| bool 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 iwl_txq *txq_memory; |
| struct iwl_txq *txq[IWL_MAX_TVQM_QUEUES]; |
| unsigned long queue_used[BITS_TO_LONGS(IWL_MAX_TVQM_QUEUES)]; |
| unsigned long queue_stopped[BITS_TO_LONGS(IWL_MAX_TVQM_QUEUES)]; |
| |
| /* PCI bus related data */ |
| struct pci_dev *pci_dev; |
| void __iomem *hw_base; |
| |
| bool ucode_write_complete; |
| wait_queue_head_t ucode_write_waitq; |
| wait_queue_head_t wait_command_queue; |
| wait_queue_head_t d0i3_waitq; |
| |
| u8 page_offs, dev_cmd_offs; |
| |
| u8 cmd_queue; |
| u8 cmd_fifo; |
| unsigned int cmd_q_wdg_timeout; |
| u8 n_no_reclaim_cmds; |
| u8 no_reclaim_cmds[MAX_NO_RECLAIM_CMDS]; |
| u8 max_tbs; |
| u16 tfd_size; |
| |
| enum iwl_amsdu_size rx_buf_size; |
| bool bc_table_dword; |
| bool scd_set_active; |
| bool sw_csum_tx; |
| u32 rx_page_order; |
| |
| /*protect hw register */ |
| spinlock_t reg_lock; |
| bool cmd_hold_nic_awake; |
| bool ref_cmd_in_flight; |
| |
| dma_addr_t fw_mon_phys; |
| struct page *fw_mon_page; |
| u32 fw_mon_size; |
| |
| 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]; |
| }; |
| |
| static inline struct iwl_trans_pcie * |
| IWL_TRANS_GET_PCIE_TRANS(struct iwl_trans *trans) |
| { |
| return (void *)trans->trans_specific; |
| } |
| |
| 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 *cfg); |
| 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); |
| |
| /***************************************************** |
| * 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 |
| ******************************************************/ |
| int iwl_pcie_tx_init(struct iwl_trans *trans); |
| int iwl_pcie_gen2_tx_init(struct iwl_trans *trans); |
| 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_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_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_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->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"); |
| } |
| |
| 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_pcie_sw_reset(struct iwl_trans *trans) |
| { |
| /* Reset entire device - do controller reset (results in SHRD_HW_RST) */ |
| iwl_set_bit(trans, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET); |
| usleep_range(5000, 6000); |
| } |
| |
| static inline void *iwl_pcie_get_tfd(struct iwl_trans_pcie *trans_pcie, |
| struct iwl_txq *txq, int idx) |
| { |
| return txq->tfds + trans_pcie->tfd_size * idx; |
| } |
| |
| 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->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) |
| { |
| struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); |
| |
| if (test_and_clear_bit(txq->id, trans_pcie->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) |
| { |
| struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); |
| |
| if (!test_and_set_bit(txq->id, trans_pcie->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) |
| { |
| return q->write_ptr >= q->read_ptr ? |
| (i >= q->read_ptr && i < q->write_ptr) : |
| !(i < q->read_ptr && i >= q->write_ptr); |
| } |
| |
| static inline u8 get_cmd_index(struct iwl_txq *q, u32 index) |
| { |
| return index & (q->n_window - 1); |
| } |
| |
| 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) |
| 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); |
| } |
| |
| void iwl_trans_pcie_rf_kill(struct iwl_trans *trans, bool state); |
| |
| #ifdef CONFIG_IWLWIFI_DEBUGFS |
| int iwl_trans_pcie_dbgfs_register(struct iwl_trans *trans); |
| #else |
| static inline int iwl_trans_pcie_dbgfs_register(struct iwl_trans *trans) |
| { |
| return 0; |
| } |
| #endif |
| |
| int iwl_pci_fw_exit_d0i3(struct iwl_trans *trans); |
| int iwl_pci_fw_enter_d0i3(struct iwl_trans *trans); |
| |
| void iwl_pcie_enable_rx_wake(struct iwl_trans *trans, bool enable); |
| |
| void iwl_pcie_rx_allocator_work(struct work_struct *data); |
| |
| /* common functions that are used by gen2 transport */ |
| 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_trans_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(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); |
| #ifdef CONFIG_INET |
| struct iwl_tso_hdr_page *get_page_hdr(struct iwl_trans *trans, size_t len); |
| #endif |
| |
| /* 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); |
| int iwl_trans_pcie_dyn_txq_alloc(struct iwl_trans *trans, |
| struct iwl_tx_queue_cfg_cmd *cmd, |
| int cmd_id, |
| 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_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, |
| bool low_power); |
| void _iwl_trans_pcie_gen2_stop_device(struct iwl_trans *trans, bool low_power); |
| 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); |
| #endif /* __iwl_trans_int_pcie_h__ */ |
