| Prakash Dhavali | 7090c5f | 2015-11-02 17:55:19 -0800 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (c) 2015 The Linux Foundation. All rights reserved. |
| 3 | * |
| 4 | * Previously licensed under the ISC license by Qualcomm Atheros, Inc. |
| 5 | * |
| 6 | * |
| 7 | * Permission to use, copy, modify, and/or distribute this software for |
| 8 | * any purpose with or without fee is hereby granted, provided that the |
| 9 | * above copyright notice and this permission notice appear in all |
| 10 | * copies. |
| 11 | * |
| 12 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL |
| 13 | * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED |
| 14 | * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE |
| 15 | * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL |
| 16 | * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR |
| 17 | * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER |
| 18 | * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR |
| 19 | * PERFORMANCE OF THIS SOFTWARE. |
| 20 | */ |
| 21 | |
| 22 | /* |
| 23 | * This file was originally distributed by Qualcomm Atheros, Inc. |
| 24 | * under proprietary terms before Copyright ownership was assigned |
| 25 | * to the Linux Foundation. |
| 26 | */ |
| 27 | |
| 28 | #ifndef __CE_H__ |
| 29 | #define __CE_H__ |
| 30 | |
| 31 | #include "cdf_atomic.h" |
| 32 | #include "cdf_lock.h" |
| 33 | #include "hif.h" |
| 34 | |
| 35 | #define CE_HTT_T2H_MSG 1 |
| 36 | #define CE_HTT_H2T_MSG 4 |
| 37 | |
| 38 | /** |
| 39 | * enum ce_id_type |
| 40 | * |
| 41 | * @ce_id_type: Copy engine ID |
| 42 | */ |
| 43 | enum ce_id_type { |
| 44 | CE_ID_0, |
| 45 | CE_ID_1, |
| 46 | CE_ID_2, |
| 47 | CE_ID_3, |
| 48 | CE_ID_4, |
| 49 | CE_ID_5, |
| 50 | CE_ID_6, |
| 51 | CE_ID_7, |
| 52 | CE_ID_8, |
| 53 | CE_ID_9, |
| 54 | CE_ID_10, |
| 55 | CE_ID_11, |
| 56 | CE_ID_MAX |
| 57 | }; |
| 58 | struct HIF_CE_completion_state { |
| 59 | struct HIF_CE_completion_state *next; |
| 60 | int send_or_recv; |
| 61 | struct CE_handle *copyeng; |
| 62 | void *ce_context; |
| 63 | void *transfer_context; |
| 64 | cdf_dma_addr_t data; |
| 65 | unsigned int nbytes; |
| 66 | unsigned int transfer_id; |
| 67 | unsigned int flags; |
| 68 | uint32_t toeplitz_hash_result; |
| 69 | }; |
| 70 | |
| 71 | /* compl_state.send_or_recv */ |
| 72 | #define HIF_CE_COMPLETE_FREE 0 |
| 73 | #define HIF_CE_COMPLETE_SEND 1 |
| 74 | #define HIF_CE_COMPLETE_RECV 2 |
| 75 | |
| 76 | enum ol_ath_hif_pkt_ecodes { |
| 77 | HIF_PIPE_NO_RESOURCE = 0 |
| 78 | }; |
| 79 | |
| 80 | struct HIF_CE_state; |
| 81 | #define HIF_CE_COMPLETE_STATE_NUM 18 /* 56 * 18 + 4/8 = 1012/1016 bytes */ |
| 82 | struct HIF_CE_completion_state_list { |
| 83 | struct HIF_CE_completion_state_list *next; |
| 84 | }; |
| 85 | |
| 86 | /* Per-pipe state. */ |
| 87 | struct HIF_CE_pipe_info { |
| 88 | /* Handle of underlying Copy Engine */ |
| 89 | struct CE_handle *ce_hdl; |
| 90 | |
| 91 | /* Our pipe number; facilitiates use of pipe_info ptrs. */ |
| 92 | uint8_t pipe_num; |
| 93 | |
| 94 | /* Convenience back pointer to HIF_CE_state. */ |
| 95 | struct HIF_CE_state *HIF_CE_state; |
| 96 | |
| 97 | /* Instantaneous number of receive buffers that should be posted */ |
| 98 | atomic_t recv_bufs_needed; |
| 99 | cdf_size_t buf_sz; |
| 100 | cdf_spinlock_t recv_bufs_needed_lock; |
| 101 | |
| 102 | cdf_spinlock_t completion_freeq_lock; |
| 103 | /* Limit the number of outstanding send requests. */ |
| 104 | int num_sends_allowed; |
| 105 | struct HIF_CE_completion_state_list *completion_space_list; |
| 106 | struct HIF_CE_completion_state *completion_freeq_head; |
| 107 | struct HIF_CE_completion_state *completion_freeq_tail; |
| 108 | /* adding three counts for debugging ring buffer errors */ |
| 109 | uint32_t nbuf_alloc_err_count; |
| 110 | uint32_t nbuf_dma_err_count; |
| 111 | uint32_t nbuf_ce_enqueue_err_count; |
| 112 | }; |
| 113 | |
| 114 | /** |
| 115 | * struct ce_tasklet_entry |
| 116 | * |
| 117 | * @intr_tq: intr_tq |
| 118 | * @ce_id: ce_id |
| 119 | * @inited: inited |
| 120 | * @hif_ce_state: hif_ce_state |
| 121 | * @from_irq: from_irq |
| 122 | */ |
| 123 | struct ce_tasklet_entry { |
| 124 | struct tasklet_struct intr_tq; |
| 125 | enum ce_id_type ce_id; |
| 126 | bool inited; |
| 127 | void *hif_ce_state; |
| 128 | bool from_irq; |
| 129 | }; |
| 130 | |
| 131 | struct HIF_CE_state { |
| 132 | struct ol_softc *scn; |
| 133 | bool started; |
| 134 | struct ce_tasklet_entry tasklets[CE_COUNT_MAX]; |
| 135 | cdf_spinlock_t keep_awake_lock; |
| 136 | unsigned int keep_awake_count; |
| 137 | bool verified_awake; |
| 138 | bool fake_sleep; |
| 139 | cdf_softirq_timer_t sleep_timer; |
| 140 | bool sleep_timer_init; |
| 141 | unsigned long sleep_ticks; |
| 142 | cdf_spinlock_t completion_pendingq_lock; |
| 143 | /* Queue of send/recv completions that need to be processed */ |
| 144 | struct HIF_CE_completion_state *completion_pendingq_head; |
| 145 | struct HIF_CE_completion_state *completion_pendingq_tail; |
| 146 | atomic_t fw_event_pending; |
| 147 | cdf_atomic_t hif_thread_idle; |
| 148 | |
| 149 | /* wait_queue_head_t service_waitq; */ |
| 150 | /* struct task_struct *compl_thread; */ |
| 151 | /* struct completion compl_thread_done; */ |
| 152 | |
| 153 | /* Per-pipe state. */ |
| 154 | struct HIF_CE_pipe_info pipe_info[CE_COUNT_MAX]; |
| 155 | /* to be activated after BMI_DONE */ |
| 156 | struct hif_msg_callbacks msg_callbacks_pending; |
| 157 | /* current msg callbacks in use */ |
| 158 | struct hif_msg_callbacks msg_callbacks_current; |
| 159 | |
| 160 | void *claimedContext; |
| 161 | |
| 162 | /* Target address used to signal a pending firmware event */ |
| 163 | uint32_t fw_indicator_address; |
| 164 | |
| 165 | /* Copy Engine used for Diagnostic Accesses */ |
| 166 | struct CE_handle *ce_diag; |
| 167 | }; |
| 168 | #endif /* __CE_H__ */ |