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2024-01-04 1543e317f1da31b75942316931e8f491a8920811 
 kernel/drivers/net/wireless/intel/iwlwifi/iwl-trans.c
....@@ -7,6 +7,7 @@
77  *
88  * Copyright(c) 2015 Intel Mobile Communications GmbH
99  * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
10
+ * Copyright(c) 2019 - 2020 Intel Corporation
1011  *
1112  * This program is free software; you can redistribute it and/or modify
1213  * it under the terms of version 2 of the GNU General Public License as
....@@ -16,11 +17,6 @@
1617  * WITHOUT ANY WARRANTY; without even the implied warranty of
1718  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
1819  * General Public License for more details.
19
- *
20
- * You should have received a copy of the GNU General Public License
21
- * along with this program; if not, write to the Free Software
22
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
23
- * USA
2420  *
2521  * The full GNU General Public License is included in this distribution
2622  * in the file called COPYING.
....@@ -33,6 +29,7 @@
3329  *
3430  * Copyright(c) 2015 Intel Mobile Communications GmbH
3531  * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
32
+ * Copyright(c) 2019 - 2020 Intel Corporation
3633  * All rights reserved.
3734  *
3835  * Redistribution and use in source and binary forms, with or without
....@@ -65,16 +62,20 @@
6562 #include <linux/kernel.h>
6663 #include <linux/bsearch.h>
6764 
65
+#include "fw/api/tx.h"
6866 #include "iwl-trans.h"
6967 #include "iwl-drv.h"
7068 #include "iwl-fh.h"
69
+#include "queue/tx.h"
70
+#include <linux/dmapool.h>
7171 
7272 struct iwl_trans *iwl_trans_alloc(unsigned int priv_size,
7373 				  struct device *dev,
74
-				  const struct iwl_cfg *cfg,
75
-				  const struct iwl_trans_ops *ops)
74
+				  const struct iwl_trans_ops *ops,
75
+				  const struct iwl_cfg_trans_params *cfg_trans)
7676 {
7777 	struct iwl_trans *trans;
78
+	int txcmd_size, txcmd_align;
7879 #ifdef CONFIG_LOCKDEP
7980 	static struct lock_class_key __key;
8081 #endif
....@@ -83,34 +84,96 @@
8384 	if (!trans)
8485 		return NULL;
8586 
87
+	trans->trans_cfg = cfg_trans;
88
+	if (!cfg_trans->gen2) {
89
+		txcmd_size = sizeof(struct iwl_tx_cmd);
90
+		txcmd_align = sizeof(void *);
91
+	} else if (cfg_trans->device_family < IWL_DEVICE_FAMILY_AX210) {
92
+		txcmd_size = sizeof(struct iwl_tx_cmd_gen2);
93
+		txcmd_align = 64;
94
+	} else {
95
+		txcmd_size = sizeof(struct iwl_tx_cmd_gen3);
96
+		txcmd_align = 128;
97
+	}
98
+
99
+	txcmd_size += sizeof(struct iwl_cmd_header);
100
+	txcmd_size += 36; /* biggest possible 802.11 header */
101
+
102
+	/* Ensure device TX cmd cannot reach/cross a page boundary in gen2 */
103
+	if (WARN_ON(cfg_trans->gen2 && txcmd_size >= txcmd_align))
104
+		return ERR_PTR(-EINVAL);
105
+
86106 #ifdef CONFIG_LOCKDEP
87107 	lockdep_init_map(&trans->sync_cmd_lockdep_map, "sync_cmd_lockdep_map",
88108 			 &__key, 0);
89109 #endif
90110 
91111 	trans->dev = dev;
92
-	trans->cfg = cfg;
93112 	trans->ops = ops;
94113 	trans->num_rx_queues = 1;
114
+
115
+	if (trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_AX210)
116
+		trans->txqs.bc_tbl_size = sizeof(struct iwl_gen3_bc_tbl);
117
+	else
118
+		trans->txqs.bc_tbl_size = sizeof(struct iwlagn_scd_bc_tbl);
119
+	/*
120
+	 * For gen2 devices, we use a single allocation for each byte-count
121
+	 * table, but they're pretty small (1k) so use a DMA pool that we
122
+	 * allocate here.
123
+	 */
124
+	if (trans->trans_cfg->gen2) {
125
+		trans->txqs.bc_pool = dmam_pool_create("iwlwifi:bc", dev,
126
+						       trans->txqs.bc_tbl_size,
127
+						       256, 0);
128
+		if (!trans->txqs.bc_pool)
129
+			return NULL;
130
+	}
131
+
132
+	if (trans->trans_cfg->use_tfh) {
133
+		trans->txqs.tfd.addr_size = 64;
134
+		trans->txqs.tfd.max_tbs = IWL_TFH_NUM_TBS;
135
+		trans->txqs.tfd.size = sizeof(struct iwl_tfh_tfd);
136
+	} else {
137
+		trans->txqs.tfd.addr_size = 36;
138
+		trans->txqs.tfd.max_tbs = IWL_NUM_OF_TBS;
139
+		trans->txqs.tfd.size = sizeof(struct iwl_tfd);
140
+	}
141
+	trans->max_skb_frags = IWL_TRANS_MAX_FRAGS(trans);
95142 
96143 	snprintf(trans->dev_cmd_pool_name, sizeof(trans->dev_cmd_pool_name),
97144 		 "iwl_cmd_pool:%s", dev_name(trans->dev));
98145 	trans->dev_cmd_pool =
99146 		kmem_cache_create(trans->dev_cmd_pool_name,
100
-				  sizeof(struct iwl_device_cmd),
101
-				  sizeof(void *),
102
-				  SLAB_HWCACHE_ALIGN,
103
-				  NULL);
147
+				  txcmd_size, txcmd_align,
148
+				  SLAB_HWCACHE_ALIGN, NULL);
104149 	if (!trans->dev_cmd_pool)
105150 		return NULL;
106151 
107152 	WARN_ON(!ops->wait_txq_empty && !ops->wait_tx_queues_empty);
153
+
154
+	trans->txqs.tso_hdr_page = alloc_percpu(struct iwl_tso_hdr_page);
155
+	if (!trans->txqs.tso_hdr_page) {
156
+		kmem_cache_destroy(trans->dev_cmd_pool);
157
+		return NULL;
158
+	}
108159 
109160 	return trans;
110161 }
111162 
112163 void iwl_trans_free(struct iwl_trans *trans)
113164 {
165
+	int i;
166
+
167
+	for_each_possible_cpu(i) {
168
+		struct iwl_tso_hdr_page *p =
169
+			per_cpu_ptr(trans->txqs.tso_hdr_page, i);
170
+
171
+		if (p->page)
172
+			__free_page(p->page);
173
+	}
174
+
175
+	free_percpu(trans->txqs.tso_hdr_page);
176
+
114177 	kmem_cache_destroy(trans->dev_cmd_pool);
115178 }
116179 
....@@ -207,17 +270,3 @@
207270 	return 0;
208271 }
209272 IWL_EXPORT_SYMBOL(iwl_cmd_groups_verify_sorted);
210
-
211
-void iwl_trans_ref(struct iwl_trans *trans)
212
-{
213
-	if (trans->ops->ref)
214
-		trans->ops->ref(trans);
215
-}
216
-IWL_EXPORT_SYMBOL(iwl_trans_ref);
217
-
218
-void iwl_trans_unref(struct iwl_trans *trans)
219
-{
220
-	if (trans->ops->unref)
221
-		trans->ops->unref(trans);
222
-}
223
-IWL_EXPORT_SYMBOL(iwl_trans_unref);