/****************************************************************************** * * Copyright(c) 2003 - 2011 Intel Corporation. All rights reserved. * * 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 * 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 #include #include #include "iwl-fh.h" #include "iwl-csr.h" #include "iwl-shared.h" #include "iwl-trans.h" #include "iwl-debug.h" #include "iwl-io.h" struct iwl_tx_queue; struct iwl_queue; struct iwl_host_cmd; /*This file includes the declaration that are internal to the * trans_pcie layer */ /** * 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_queue - Rx queue * @bd: driver's pointer to buffer of receive buffer descriptors (rbd) * @bd_dma: bus address of buffer of receive buffer descriptors (rbd) * @pool: * @queue: * @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 * @write_actual: * @rx_free: list of free SKBs for use * @rx_used: List of Rx buffers with no SKB * @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: * * NOTE: rx_free and rx_used are used as a FIFO for iwl_rx_mem_buffers */ struct iwl_rx_queue { __le32 *bd; dma_addr_t bd_dma; struct iwl_rx_mem_buffer pool[RX_QUEUE_SIZE + RX_FREE_BUFFERS]; struct iwl_rx_mem_buffer *queue[RX_QUEUE_SIZE]; u32 read; u32 write; u32 free_count; u32 write_actual; struct list_head rx_free; struct list_head rx_used; int need_update; struct iwl_rb_status *rb_stts; dma_addr_t rb_stts_dma; spinlock_t lock; }; struct iwl_dma_ptr { dma_addr_t dma; void *addr; size_t size; }; /** * struct iwl_trans_pcie - PCIe transport specific data * @rxq: all the RX queue data * @rx_replenish: work that will be called when buffers need to be allocated * @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 */ struct iwl_trans_pcie { struct iwl_rx_queue rxq; struct work_struct rx_replenish; struct iwl_trans *trans; /* INT ICT Table */ __le32 *ict_tbl; void *ict_tbl_vir; dma_addr_t ict_tbl_dma; dma_addr_t aligned_ict_tbl_dma; int ict_index; u32 inta; bool use_ict; struct tasklet_struct irq_tasklet; struct isr_statistics isr_stats; u32 inta_mask; u32 scd_base_addr; struct iwl_dma_ptr scd_bc_tbls; struct iwl_dma_ptr kw; }; #define IWL_TRANS_GET_PCIE_TRANS(_iwl_trans) \ ((struct iwl_trans_pcie *) ((_iwl_trans)->trans_specific)) /***************************************************** * RX ******************************************************/ void iwl_bg_rx_replenish(struct work_struct *data); void iwl_irq_tasklet(struct iwl_trans *trans); void iwlagn_rx_replenish(struct iwl_trans *trans); void iwl_rx_queue_update_write_ptr(struct iwl_trans *trans, struct iwl_rx_queue *q); /***************************************************** * ICT ******************************************************/ int iwl_reset_ict(struct iwl_trans *trans); void iwl_disable_ict(struct iwl_trans *trans); int iwl_alloc_isr_ict(struct iwl_trans *trans); void iwl_free_isr_ict(struct iwl_trans *trans); irqreturn_t iwl_isr_ict(int irq, void *data); /***************************************************** * TX / HCMD ******************************************************/ void iwl_txq_update_write_ptr(struct iwl_priv *priv, struct iwl_tx_queue *txq); int iwlagn_txq_attach_buf_to_tfd(struct iwl_trans *trans, struct iwl_tx_queue *txq, dma_addr_t addr, u16 len, u8 reset); int iwl_queue_init(struct iwl_queue *q, int count, int slots_num, u32 id); int iwl_trans_pcie_send_cmd(struct iwl_trans *trans, struct iwl_host_cmd *cmd); int __must_check iwl_trans_pcie_send_cmd_pdu(struct iwl_trans *trans, u8 id, u32 flags, u16 len, const void *data); void iwl_tx_cmd_complete(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb); void iwl_trans_txq_update_byte_cnt_tbl(struct iwl_trans *trans, struct iwl_tx_queue *txq, u16 byte_cnt); int iwl_trans_pcie_txq_agg_disable(struct iwl_priv *priv, u16 txq_id, u16 ssn_idx, u8 tx_fifo); void iwl_trans_set_wr_ptrs(struct iwl_trans *trans, int txq_id, u32 index); void iwl_trans_tx_queue_set_status(struct iwl_priv *priv, struct iwl_tx_queue *txq, int tx_fifo_id, int scd_retry); void iwl_trans_pcie_txq_agg_setup(struct iwl_priv *priv, int sta_id, int tid, int frame_limit); void iwlagn_txq_free_tfd(struct iwl_trans *trans, struct iwl_tx_queue *txq, int index); void iwl_tx_queue_reclaim(struct iwl_trans *trans, int txq_id, int index, struct sk_buff_head *skbs); /***************************************************** * Error handling ******************************************************/ int iwl_dump_nic_event_log(struct iwl_trans *trans, bool full_log, char **buf, bool display); int iwl_dump_fh(struct iwl_trans *trans, char **buf, bool display); void iwl_dump_csr(struct iwl_trans *trans); static inline void iwl_disable_interrupts(struct iwl_trans *trans) { clear_bit(STATUS_INT_ENABLED, &trans->shrd->status); /* disable interrupts from uCode/NIC to host */ iwl_write32(priv(trans), CSR_INT_MASK, 0x00000000); /* acknowledge/clear/reset any interrupts still pending * from uCode or flow handler (Rx/Tx DMA) */ iwl_write32(priv(trans), CSR_INT, 0xffffffff); iwl_write32(priv(trans), CSR_FH_INT_STATUS, 0xffffffff); IWL_DEBUG_ISR(trans, "Disabled interrupts\n"); } 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->shrd->status); iwl_write32(priv(trans), CSR_INT_MASK, trans_pcie->inta_mask); } #endif /* __iwl_trans_int_pcie_h__ */