1 /* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
2 /*
3 * Copyright (C) 2020-2022 Intel Corporation
4 */
5 #ifndef __iwl_trans_queue_tx_h__
6 #define __iwl_trans_queue_tx_h__
7 #include "iwl-fh.h"
8 #include "fw/api/tx.h"
9
10 struct iwl_tso_hdr_page {
11 struct page *page;
12 u8 *pos;
13 };
14
15 static inline dma_addr_t
iwl_txq_get_first_tb_dma(struct iwl_txq * txq,int idx)16 iwl_txq_get_first_tb_dma(struct iwl_txq *txq, int idx)
17 {
18 return txq->first_tb_dma +
19 sizeof(struct iwl_pcie_first_tb_buf) * idx;
20 }
21
iwl_txq_get_cmd_index(const struct iwl_txq * q,u32 index)22 static inline u16 iwl_txq_get_cmd_index(const struct iwl_txq *q, u32 index)
23 {
24 return index & (q->n_window - 1);
25 }
26
27 void iwl_txq_gen2_unmap(struct iwl_trans *trans, int txq_id);
28
iwl_wake_queue(struct iwl_trans * trans,struct iwl_txq * txq)29 static inline void iwl_wake_queue(struct iwl_trans *trans,
30 struct iwl_txq *txq)
31 {
32 if (test_and_clear_bit(txq->id, trans->txqs.queue_stopped)) {
33 IWL_DEBUG_TX_QUEUES(trans, "Wake hwq %d\n", txq->id);
34 iwl_op_mode_queue_not_full(trans->op_mode, txq->id);
35 }
36 }
37
iwl_txq_get_tfd(struct iwl_trans * trans,struct iwl_txq * txq,int idx)38 static inline void *iwl_txq_get_tfd(struct iwl_trans *trans,
39 struct iwl_txq *txq, int idx)
40 {
41 if (trans->trans_cfg->use_tfh)
42 idx = iwl_txq_get_cmd_index(txq, idx);
43
44 return (u8 *)txq->tfds + trans->txqs.tfd.size * idx;
45 }
46
47 int iwl_txq_alloc(struct iwl_trans *trans, struct iwl_txq *txq, int slots_num,
48 bool cmd_queue);
49 /*
50 * We need this inline in case dma_addr_t is only 32-bits - since the
51 * hardware is always 64-bit, the issue can still occur in that case,
52 * so use u64 for 'phys' here to force the addition in 64-bit.
53 */
iwl_txq_crosses_4g_boundary(u64 phys,u16 len)54 static inline bool iwl_txq_crosses_4g_boundary(u64 phys, u16 len)
55 {
56 return upper_32_bits(phys) != upper_32_bits(phys + len);
57 }
58
59 int iwl_txq_space(struct iwl_trans *trans, const struct iwl_txq *q);
60
iwl_txq_stop(struct iwl_trans * trans,struct iwl_txq * txq)61 static inline void iwl_txq_stop(struct iwl_trans *trans, struct iwl_txq *txq)
62 {
63 if (!test_and_set_bit(txq->id, trans->txqs.queue_stopped)) {
64 iwl_op_mode_queue_full(trans->op_mode, txq->id);
65 IWL_DEBUG_TX_QUEUES(trans, "Stop hwq %d\n", txq->id);
66 } else {
67 IWL_DEBUG_TX_QUEUES(trans, "hwq %d already stopped\n",
68 txq->id);
69 }
70 }
71
72 /**
73 * iwl_txq_inc_wrap - increment queue index, wrap back to beginning
74 * @index -- current index
75 */
iwl_txq_inc_wrap(struct iwl_trans * trans,int index)76 static inline int iwl_txq_inc_wrap(struct iwl_trans *trans, int index)
77 {
78 return ++index &
79 (trans->trans_cfg->base_params->max_tfd_queue_size - 1);
80 }
81
82 /**
83 * iwl_txq_dec_wrap - decrement queue index, wrap back to end
84 * @index -- current index
85 */
iwl_txq_dec_wrap(struct iwl_trans * trans,int index)86 static inline int iwl_txq_dec_wrap(struct iwl_trans *trans, int index)
87 {
88 return --index &
89 (trans->trans_cfg->base_params->max_tfd_queue_size - 1);
90 }
91
iwl_txq_used(const struct iwl_txq * q,int i)92 static inline bool iwl_txq_used(const struct iwl_txq *q, int i)
93 {
94 int index = iwl_txq_get_cmd_index(q, i);
95 int r = iwl_txq_get_cmd_index(q, q->read_ptr);
96 int w = iwl_txq_get_cmd_index(q, q->write_ptr);
97
98 return w >= r ?
99 (index >= r && index < w) :
100 !(index < r && index >= w);
101 }
102
103 void iwl_txq_free_tso_page(struct iwl_trans *trans, struct sk_buff *skb);
104
105 void iwl_txq_log_scd_error(struct iwl_trans *trans, struct iwl_txq *txq);
106
107 int iwl_txq_gen2_set_tb(struct iwl_trans *trans,
108 struct iwl_tfh_tfd *tfd, dma_addr_t addr,
109 u16 len);
110
111 void iwl_txq_gen2_tfd_unmap(struct iwl_trans *trans,
112 struct iwl_cmd_meta *meta,
113 struct iwl_tfh_tfd *tfd);
114
115 int iwl_txq_dyn_alloc(struct iwl_trans *trans, u32 flags,
116 u32 sta_mask, u8 tid,
117 int size, unsigned int timeout);
118
119 int iwl_txq_gen2_tx(struct iwl_trans *trans, struct sk_buff *skb,
120 struct iwl_device_tx_cmd *dev_cmd, int txq_id);
121
122 void iwl_txq_dyn_free(struct iwl_trans *trans, int queue);
123 void iwl_txq_gen2_free_tfd(struct iwl_trans *trans, struct iwl_txq *txq);
124 void iwl_txq_inc_wr_ptr(struct iwl_trans *trans, struct iwl_txq *txq);
125 void iwl_txq_gen2_tx_free(struct iwl_trans *trans);
126 int iwl_txq_init(struct iwl_trans *trans, struct iwl_txq *txq, int slots_num,
127 bool cmd_queue);
128 int iwl_txq_gen2_init(struct iwl_trans *trans, int txq_id, int queue_size);
129 #ifdef CONFIG_INET
130 struct iwl_tso_hdr_page *get_page_hdr(struct iwl_trans *trans, size_t len,
131 struct sk_buff *skb);
132 #endif
iwl_txq_gen1_tfd_get_num_tbs(struct iwl_trans * trans,void * _tfd)133 static inline u8 iwl_txq_gen1_tfd_get_num_tbs(struct iwl_trans *trans,
134 void *_tfd)
135 {
136 struct iwl_tfd *tfd;
137
138 if (trans->trans_cfg->use_tfh) {
139 struct iwl_tfh_tfd *tfh_tfd = _tfd;
140
141 return le16_to_cpu(tfh_tfd->num_tbs) & 0x1f;
142 }
143
144 tfd = (struct iwl_tfd *)_tfd;
145 return tfd->num_tbs & 0x1f;
146 }
147
iwl_txq_gen1_tfd_tb_get_len(struct iwl_trans * trans,void * _tfd,u8 idx)148 static inline u16 iwl_txq_gen1_tfd_tb_get_len(struct iwl_trans *trans,
149 void *_tfd, u8 idx)
150 {
151 struct iwl_tfd *tfd;
152 struct iwl_tfd_tb *tb;
153
154 if (trans->trans_cfg->use_tfh) {
155 struct iwl_tfh_tfd *tfh_tfd = _tfd;
156 struct iwl_tfh_tb *tfh_tb = &tfh_tfd->tbs[idx];
157
158 return le16_to_cpu(tfh_tb->tb_len);
159 }
160
161 tfd = (struct iwl_tfd *)_tfd;
162 tb = &tfd->tbs[idx];
163
164 return le16_to_cpu(tb->hi_n_len) >> 4;
165 }
166
167 void iwl_txq_gen1_tfd_unmap(struct iwl_trans *trans,
168 struct iwl_cmd_meta *meta,
169 struct iwl_txq *txq, int index);
170 void iwl_txq_gen1_inval_byte_cnt_tbl(struct iwl_trans *trans,
171 struct iwl_txq *txq);
172 void iwl_txq_gen1_update_byte_cnt_tbl(struct iwl_trans *trans,
173 struct iwl_txq *txq, u16 byte_cnt,
174 int num_tbs);
175 void iwl_txq_reclaim(struct iwl_trans *trans, int txq_id, int ssn,
176 struct sk_buff_head *skbs, bool is_flush);
177 void iwl_txq_set_q_ptrs(struct iwl_trans *trans, int txq_id, int ptr);
178 void iwl_trans_txq_freeze_timer(struct iwl_trans *trans, unsigned long txqs,
179 bool freeze);
180 void iwl_txq_progress(struct iwl_txq *txq);
181 void iwl_txq_free_tfd(struct iwl_trans *trans, struct iwl_txq *txq);
182 int iwl_trans_txq_send_hcmd(struct iwl_trans *trans, struct iwl_host_cmd *cmd);
183 #endif /* __iwl_trans_queue_tx_h__ */
184