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02a7fa00 JB |
1 | /****************************************************************************** |
2 | * | |
51368bf7 | 3 | * Copyright(c) 2003 - 2014 Intel Corporation. All rights reserved. |
14ef1b43 | 4 | * Copyright(c) 2015 Intel Deutschland GmbH |
02a7fa00 JB |
5 | * |
6 | * Portions of this file are derived from the ipw3945 project. | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify it | |
9 | * under the terms of version 2 of the GNU General Public License as | |
10 | * published by the Free Software Foundation. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
13 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
15 | * more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License along with | |
18 | * this program; if not, write to the Free Software Foundation, Inc., | |
19 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA | |
20 | * | |
21 | * The full GNU General Public License is included in this distribution in the | |
22 | * file called LICENSE. | |
23 | * | |
24 | * Contact Information: | |
cb2f8277 | 25 | * Intel Linux Wireless <linuxwifi@intel.com> |
02a7fa00 JB |
26 | * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
27 | * | |
28 | *****************************************************************************/ | |
83ed9015 EG |
29 | #include <linux/delay.h> |
30 | #include <linux/device.h> | |
cc5f7e39 | 31 | #include <linux/export.h> |
02a7fa00 | 32 | |
48e29340 | 33 | #include "iwl-drv.h" |
02a7fa00 | 34 | #include "iwl-io.h" |
6ac7d115 | 35 | #include "iwl-csr.h" |
83ed9015 | 36 | #include "iwl-debug.h" |
4c9706dc | 37 | #include "iwl-prph.h" |
313b0a29 | 38 | #include "iwl-fh.h" |
02a7fa00 | 39 | |
a73a2cea EG |
40 | void iwl_write8(struct iwl_trans *trans, u32 ofs, u8 val) |
41 | { | |
42 | trace_iwlwifi_dev_iowrite8(trans->dev, ofs, val); | |
43 | iwl_trans_write8(trans, ofs, val); | |
44 | } | |
45 | IWL_EXPORT_SYMBOL(iwl_write8); | |
46 | ||
47 | void iwl_write32(struct iwl_trans *trans, u32 ofs, u32 val) | |
48 | { | |
49 | trace_iwlwifi_dev_iowrite32(trans->dev, ofs, val); | |
50 | iwl_trans_write32(trans, ofs, val); | |
51 | } | |
52 | IWL_EXPORT_SYMBOL(iwl_write32); | |
53 | ||
54 | u32 iwl_read32(struct iwl_trans *trans, u32 ofs) | |
55 | { | |
56 | u32 val = iwl_trans_read32(trans, ofs); | |
89ced540 | 57 | |
a73a2cea EG |
58 | trace_iwlwifi_dev_ioread32(trans->dev, ofs, val); |
59 | return val; | |
60 | } | |
61 | IWL_EXPORT_SYMBOL(iwl_read32); | |
62 | ||
02a7fa00 JB |
63 | #define IWL_POLL_INTERVAL 10 /* microseconds */ |
64 | ||
1042db2a | 65 | int iwl_poll_bit(struct iwl_trans *trans, u32 addr, |
02a7fa00 JB |
66 | u32 bits, u32 mask, int timeout) |
67 | { | |
68 | int t = 0; | |
69 | ||
70 | do { | |
1042db2a | 71 | if ((iwl_read32(trans, addr) & mask) == (bits & mask)) |
02a7fa00 JB |
72 | return t; |
73 | udelay(IWL_POLL_INTERVAL); | |
74 | t += IWL_POLL_INTERVAL; | |
75 | } while (t < timeout); | |
76 | ||
77 | return -ETIMEDOUT; | |
78 | } | |
48e29340 | 79 | IWL_EXPORT_SYMBOL(iwl_poll_bit); |
02a7fa00 | 80 | |
1042db2a | 81 | u32 iwl_read_direct32(struct iwl_trans *trans, u32 reg) |
02a7fa00 | 82 | { |
abae2386 | 83 | u32 value = 0x5a5a5a5a; |
02a7fa00 | 84 | unsigned long flags; |
23ba9340 | 85 | if (iwl_trans_grab_nic_access(trans, &flags)) { |
abae2386 | 86 | value = iwl_read32(trans, reg); |
e56b04ef | 87 | iwl_trans_release_nic_access(trans, &flags); |
abae2386 | 88 | } |
02a7fa00 JB |
89 | |
90 | return value; | |
91 | } | |
48e29340 | 92 | IWL_EXPORT_SYMBOL(iwl_read_direct32); |
02a7fa00 | 93 | |
1042db2a | 94 | void iwl_write_direct32(struct iwl_trans *trans, u32 reg, u32 value) |
02a7fa00 JB |
95 | { |
96 | unsigned long flags; | |
97 | ||
23ba9340 | 98 | if (iwl_trans_grab_nic_access(trans, &flags)) { |
1042db2a | 99 | iwl_write32(trans, reg, value); |
e56b04ef | 100 | iwl_trans_release_nic_access(trans, &flags); |
02a7fa00 | 101 | } |
02a7fa00 | 102 | } |
48e29340 | 103 | IWL_EXPORT_SYMBOL(iwl_write_direct32); |
02a7fa00 | 104 | |
1042db2a | 105 | int iwl_poll_direct_bit(struct iwl_trans *trans, u32 addr, u32 mask, |
02a7fa00 JB |
106 | int timeout) |
107 | { | |
108 | int t = 0; | |
109 | ||
110 | do { | |
1042db2a | 111 | if ((iwl_read_direct32(trans, addr) & mask) == mask) |
02a7fa00 JB |
112 | return t; |
113 | udelay(IWL_POLL_INTERVAL); | |
114 | t += IWL_POLL_INTERVAL; | |
115 | } while (t < timeout); | |
116 | ||
117 | return -ETIMEDOUT; | |
118 | } | |
48e29340 | 119 | IWL_EXPORT_SYMBOL(iwl_poll_direct_bit); |
02a7fa00 | 120 | |
14ef1b43 | 121 | u32 iwl_read_prph_no_grab(struct iwl_trans *trans, u32 ofs) |
02a7fa00 | 122 | { |
6a06b6c1 EG |
123 | u32 val = iwl_trans_read_prph(trans, ofs); |
124 | trace_iwlwifi_dev_ioread_prph32(trans->dev, ofs, val); | |
125 | return val; | |
02a7fa00 | 126 | } |
14ef1b43 | 127 | IWL_EXPORT_SYMBOL(iwl_read_prph_no_grab); |
02a7fa00 | 128 | |
14ef1b43 | 129 | void iwl_write_prph_no_grab(struct iwl_trans *trans, u32 ofs, u32 val) |
02a7fa00 | 130 | { |
6a06b6c1 EG |
131 | trace_iwlwifi_dev_iowrite_prph32(trans->dev, ofs, val); |
132 | iwl_trans_write_prph(trans, ofs, val); | |
02a7fa00 | 133 | } |
14ef1b43 | 134 | IWL_EXPORT_SYMBOL(iwl_write_prph_no_grab); |
02a7fa00 | 135 | |
6a06b6c1 | 136 | u32 iwl_read_prph(struct iwl_trans *trans, u32 ofs) |
02a7fa00 JB |
137 | { |
138 | unsigned long flags; | |
abae2386 | 139 | u32 val = 0x5a5a5a5a; |
02a7fa00 | 140 | |
23ba9340 | 141 | if (iwl_trans_grab_nic_access(trans, &flags)) { |
14ef1b43 | 142 | val = iwl_read_prph_no_grab(trans, ofs); |
e56b04ef | 143 | iwl_trans_release_nic_access(trans, &flags); |
abae2386 | 144 | } |
02a7fa00 JB |
145 | return val; |
146 | } | |
48e29340 | 147 | IWL_EXPORT_SYMBOL(iwl_read_prph); |
02a7fa00 | 148 | |
6a06b6c1 | 149 | void iwl_write_prph(struct iwl_trans *trans, u32 ofs, u32 val) |
02a7fa00 JB |
150 | { |
151 | unsigned long flags; | |
152 | ||
23ba9340 | 153 | if (iwl_trans_grab_nic_access(trans, &flags)) { |
14ef1b43 | 154 | iwl_write_prph_no_grab(trans, ofs, val); |
e56b04ef | 155 | iwl_trans_release_nic_access(trans, &flags); |
02a7fa00 | 156 | } |
02a7fa00 | 157 | } |
48e29340 | 158 | IWL_EXPORT_SYMBOL(iwl_write_prph); |
02a7fa00 | 159 | |
189fa2fa EH |
160 | int iwl_poll_prph_bit(struct iwl_trans *trans, u32 addr, |
161 | u32 bits, u32 mask, int timeout) | |
162 | { | |
163 | int t = 0; | |
164 | ||
165 | do { | |
166 | if ((iwl_read_prph(trans, addr) & mask) == (bits & mask)) | |
167 | return t; | |
168 | udelay(IWL_POLL_INTERVAL); | |
169 | t += IWL_POLL_INTERVAL; | |
170 | } while (t < timeout); | |
171 | ||
172 | return -ETIMEDOUT; | |
173 | } | |
174 | ||
6a06b6c1 | 175 | void iwl_set_bits_prph(struct iwl_trans *trans, u32 ofs, u32 mask) |
02a7fa00 JB |
176 | { |
177 | unsigned long flags; | |
178 | ||
23ba9340 | 179 | if (iwl_trans_grab_nic_access(trans, &flags)) { |
14ef1b43 GBA |
180 | iwl_write_prph_no_grab(trans, ofs, |
181 | iwl_read_prph_no_grab(trans, ofs) | | |
182 | mask); | |
e56b04ef | 183 | iwl_trans_release_nic_access(trans, &flags); |
bfe4b80e | 184 | } |
02a7fa00 | 185 | } |
48e29340 | 186 | IWL_EXPORT_SYMBOL(iwl_set_bits_prph); |
02a7fa00 | 187 | |
6a06b6c1 | 188 | void iwl_set_bits_mask_prph(struct iwl_trans *trans, u32 ofs, |
02a7fa00 JB |
189 | u32 bits, u32 mask) |
190 | { | |
191 | unsigned long flags; | |
192 | ||
23ba9340 | 193 | if (iwl_trans_grab_nic_access(trans, &flags)) { |
14ef1b43 GBA |
194 | iwl_write_prph_no_grab(trans, ofs, |
195 | (iwl_read_prph_no_grab(trans, ofs) & | |
196 | mask) | bits); | |
e56b04ef | 197 | iwl_trans_release_nic_access(trans, &flags); |
bfe4b80e | 198 | } |
02a7fa00 | 199 | } |
48e29340 | 200 | IWL_EXPORT_SYMBOL(iwl_set_bits_mask_prph); |
02a7fa00 | 201 | |
6a06b6c1 | 202 | void iwl_clear_bits_prph(struct iwl_trans *trans, u32 ofs, u32 mask) |
02a7fa00 JB |
203 | { |
204 | unsigned long flags; | |
205 | u32 val; | |
206 | ||
23ba9340 | 207 | if (iwl_trans_grab_nic_access(trans, &flags)) { |
14ef1b43 GBA |
208 | val = iwl_read_prph_no_grab(trans, ofs); |
209 | iwl_write_prph_no_grab(trans, ofs, (val & ~mask)); | |
e56b04ef | 210 | iwl_trans_release_nic_access(trans, &flags); |
bfe4b80e | 211 | } |
02a7fa00 | 212 | } |
48e29340 | 213 | IWL_EXPORT_SYMBOL(iwl_clear_bits_prph); |
313b0a29 | 214 | |
4c9706dc LK |
215 | void iwl_force_nmi(struct iwl_trans *trans) |
216 | { | |
5dd9c68a | 217 | if (trans->cfg->device_family != IWL_DEVICE_FAMILY_8000) { |
66396583 EG |
218 | iwl_write_prph(trans, DEVICE_SET_NMI_REG, |
219 | DEVICE_SET_NMI_VAL_DRV); | |
220 | iwl_write_prph(trans, DEVICE_SET_NMI_REG, | |
221 | DEVICE_SET_NMI_VAL_HW); | |
222 | } else { | |
5dd9c68a EG |
223 | iwl_write_prph(trans, DEVICE_SET_NMI_8000_REG, |
224 | DEVICE_SET_NMI_8000_VAL); | |
9b666db4 EG |
225 | iwl_write_prph(trans, DEVICE_SET_NMI_REG, |
226 | DEVICE_SET_NMI_VAL_DRV); | |
66396583 | 227 | } |
4c9706dc LK |
228 | } |
229 | IWL_EXPORT_SYMBOL(iwl_force_nmi); | |
230 | ||
313b0a29 IH |
231 | static const char *get_fh_string(int cmd) |
232 | { | |
233 | #define IWL_CMD(x) case x: return #x | |
234 | switch (cmd) { | |
235 | IWL_CMD(FH_RSCSR_CHNL0_STTS_WPTR_REG); | |
236 | IWL_CMD(FH_RSCSR_CHNL0_RBDCB_BASE_REG); | |
237 | IWL_CMD(FH_RSCSR_CHNL0_WPTR); | |
238 | IWL_CMD(FH_MEM_RCSR_CHNL0_CONFIG_REG); | |
239 | IWL_CMD(FH_MEM_RSSR_SHARED_CTRL_REG); | |
240 | IWL_CMD(FH_MEM_RSSR_RX_STATUS_REG); | |
241 | IWL_CMD(FH_MEM_RSSR_RX_ENABLE_ERR_IRQ2DRV); | |
242 | IWL_CMD(FH_TSSR_TX_STATUS_REG); | |
243 | IWL_CMD(FH_TSSR_TX_ERROR_REG); | |
244 | default: | |
245 | return "UNKNOWN"; | |
246 | } | |
247 | #undef IWL_CMD | |
248 | } | |
249 | ||
250 | int iwl_dump_fh(struct iwl_trans *trans, char **buf) | |
251 | { | |
252 | int i; | |
253 | static const u32 fh_tbl[] = { | |
254 | FH_RSCSR_CHNL0_STTS_WPTR_REG, | |
255 | FH_RSCSR_CHNL0_RBDCB_BASE_REG, | |
256 | FH_RSCSR_CHNL0_WPTR, | |
257 | FH_MEM_RCSR_CHNL0_CONFIG_REG, | |
258 | FH_MEM_RSSR_SHARED_CTRL_REG, | |
259 | FH_MEM_RSSR_RX_STATUS_REG, | |
260 | FH_MEM_RSSR_RX_ENABLE_ERR_IRQ2DRV, | |
261 | FH_TSSR_TX_STATUS_REG, | |
262 | FH_TSSR_TX_ERROR_REG | |
263 | }; | |
264 | ||
265 | #ifdef CONFIG_IWLWIFI_DEBUGFS | |
266 | if (buf) { | |
267 | int pos = 0; | |
268 | size_t bufsz = ARRAY_SIZE(fh_tbl) * 48 + 40; | |
269 | ||
270 | *buf = kmalloc(bufsz, GFP_KERNEL); | |
271 | if (!*buf) | |
272 | return -ENOMEM; | |
273 | ||
274 | pos += scnprintf(*buf + pos, bufsz - pos, | |
275 | "FH register values:\n"); | |
276 | ||
277 | for (i = 0; i < ARRAY_SIZE(fh_tbl); i++) | |
278 | pos += scnprintf(*buf + pos, bufsz - pos, | |
279 | " %34s: 0X%08x\n", | |
280 | get_fh_string(fh_tbl[i]), | |
281 | iwl_read_direct32(trans, fh_tbl[i])); | |
282 | ||
283 | return pos; | |
284 | } | |
285 | #endif | |
286 | ||
287 | IWL_ERR(trans, "FH register values:\n"); | |
288 | for (i = 0; i < ARRAY_SIZE(fh_tbl); i++) | |
289 | IWL_ERR(trans, " %34s: 0X%08x\n", | |
290 | get_fh_string(fh_tbl[i]), | |
291 | iwl_read_direct32(trans, fh_tbl[i])); | |
292 | ||
293 | return 0; | |
294 | } |