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02a7fa00 JB |
1 | /****************************************************************************** |
2 | * | |
128e63ef | 3 | * Copyright(c) 2003 - 2013 Intel Corporation. All rights reserved. |
02a7fa00 JB |
4 | * |
5 | * Portions of this file are derived from the ipw3945 project. | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify it | |
8 | * under the terms of version 2 of the GNU General Public License as | |
9 | * published by the Free Software Foundation. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
14 | * more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License along with | |
17 | * this program; if not, write to the Free Software Foundation, Inc., | |
18 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA | |
19 | * | |
20 | * The full GNU General Public License is included in this distribution in the | |
21 | * file called LICENSE. | |
22 | * | |
23 | * Contact Information: | |
24 | * Intel Linux Wireless <ilw@linux.intel.com> | |
25 | * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 | |
26 | * | |
27 | *****************************************************************************/ | |
83ed9015 EG |
28 | #include <linux/delay.h> |
29 | #include <linux/device.h> | |
cc5f7e39 | 30 | #include <linux/export.h> |
02a7fa00 | 31 | |
48e29340 | 32 | #include "iwl-drv.h" |
02a7fa00 | 33 | #include "iwl-io.h" |
6ac7d115 | 34 | #include "iwl-csr.h" |
83ed9015 | 35 | #include "iwl-debug.h" |
313b0a29 IH |
36 | #include "iwl-fh.h" |
37 | #include "iwl-csr.h" | |
02a7fa00 JB |
38 | |
39 | #define IWL_POLL_INTERVAL 10 /* microseconds */ | |
40 | ||
1042db2a | 41 | int iwl_poll_bit(struct iwl_trans *trans, u32 addr, |
02a7fa00 JB |
42 | u32 bits, u32 mask, int timeout) |
43 | { | |
44 | int t = 0; | |
45 | ||
46 | do { | |
1042db2a | 47 | if ((iwl_read32(trans, addr) & mask) == (bits & mask)) |
02a7fa00 JB |
48 | return t; |
49 | udelay(IWL_POLL_INTERVAL); | |
50 | t += IWL_POLL_INTERVAL; | |
51 | } while (t < timeout); | |
52 | ||
53 | return -ETIMEDOUT; | |
54 | } | |
48e29340 | 55 | IWL_EXPORT_SYMBOL(iwl_poll_bit); |
02a7fa00 | 56 | |
1042db2a | 57 | u32 iwl_read_direct32(struct iwl_trans *trans, u32 reg) |
02a7fa00 | 58 | { |
abae2386 | 59 | u32 value = 0x5a5a5a5a; |
02a7fa00 | 60 | unsigned long flags; |
e56b04ef | 61 | if (iwl_trans_grab_nic_access(trans, false, &flags)) { |
abae2386 | 62 | value = iwl_read32(trans, reg); |
e56b04ef | 63 | iwl_trans_release_nic_access(trans, &flags); |
abae2386 | 64 | } |
02a7fa00 JB |
65 | |
66 | return value; | |
67 | } | |
48e29340 | 68 | IWL_EXPORT_SYMBOL(iwl_read_direct32); |
02a7fa00 | 69 | |
1042db2a | 70 | void iwl_write_direct32(struct iwl_trans *trans, u32 reg, u32 value) |
02a7fa00 JB |
71 | { |
72 | unsigned long flags; | |
73 | ||
e56b04ef | 74 | if (iwl_trans_grab_nic_access(trans, false, &flags)) { |
1042db2a | 75 | iwl_write32(trans, reg, value); |
e56b04ef | 76 | iwl_trans_release_nic_access(trans, &flags); |
02a7fa00 | 77 | } |
02a7fa00 | 78 | } |
48e29340 | 79 | IWL_EXPORT_SYMBOL(iwl_write_direct32); |
02a7fa00 | 80 | |
1042db2a | 81 | int iwl_poll_direct_bit(struct iwl_trans *trans, u32 addr, u32 mask, |
02a7fa00 JB |
82 | int timeout) |
83 | { | |
84 | int t = 0; | |
85 | ||
86 | do { | |
1042db2a | 87 | if ((iwl_read_direct32(trans, addr) & mask) == mask) |
02a7fa00 JB |
88 | return t; |
89 | udelay(IWL_POLL_INTERVAL); | |
90 | t += IWL_POLL_INTERVAL; | |
91 | } while (t < timeout); | |
92 | ||
93 | return -ETIMEDOUT; | |
94 | } | |
48e29340 | 95 | IWL_EXPORT_SYMBOL(iwl_poll_direct_bit); |
02a7fa00 | 96 | |
6a06b6c1 | 97 | static inline u32 __iwl_read_prph(struct iwl_trans *trans, u32 ofs) |
02a7fa00 | 98 | { |
6a06b6c1 EG |
99 | u32 val = iwl_trans_read_prph(trans, ofs); |
100 | trace_iwlwifi_dev_ioread_prph32(trans->dev, ofs, val); | |
101 | return val; | |
02a7fa00 JB |
102 | } |
103 | ||
6a06b6c1 | 104 | static inline void __iwl_write_prph(struct iwl_trans *trans, u32 ofs, u32 val) |
02a7fa00 | 105 | { |
6a06b6c1 EG |
106 | trace_iwlwifi_dev_iowrite_prph32(trans->dev, ofs, val); |
107 | iwl_trans_write_prph(trans, ofs, val); | |
02a7fa00 JB |
108 | } |
109 | ||
6a06b6c1 | 110 | u32 iwl_read_prph(struct iwl_trans *trans, u32 ofs) |
02a7fa00 JB |
111 | { |
112 | unsigned long flags; | |
abae2386 | 113 | u32 val = 0x5a5a5a5a; |
02a7fa00 | 114 | |
e56b04ef | 115 | if (iwl_trans_grab_nic_access(trans, false, &flags)) { |
abae2386 | 116 | val = __iwl_read_prph(trans, ofs); |
e56b04ef | 117 | iwl_trans_release_nic_access(trans, &flags); |
abae2386 | 118 | } |
02a7fa00 JB |
119 | return val; |
120 | } | |
48e29340 | 121 | IWL_EXPORT_SYMBOL(iwl_read_prph); |
02a7fa00 | 122 | |
6a06b6c1 | 123 | void iwl_write_prph(struct iwl_trans *trans, u32 ofs, u32 val) |
02a7fa00 JB |
124 | { |
125 | unsigned long flags; | |
126 | ||
e56b04ef | 127 | if (iwl_trans_grab_nic_access(trans, false, &flags)) { |
6a06b6c1 | 128 | __iwl_write_prph(trans, ofs, val); |
e56b04ef | 129 | iwl_trans_release_nic_access(trans, &flags); |
02a7fa00 | 130 | } |
02a7fa00 | 131 | } |
48e29340 | 132 | IWL_EXPORT_SYMBOL(iwl_write_prph); |
02a7fa00 | 133 | |
6a06b6c1 | 134 | void iwl_set_bits_prph(struct iwl_trans *trans, u32 ofs, u32 mask) |
02a7fa00 JB |
135 | { |
136 | unsigned long flags; | |
137 | ||
e56b04ef | 138 | if (iwl_trans_grab_nic_access(trans, false, &flags)) { |
6a06b6c1 EG |
139 | __iwl_write_prph(trans, ofs, |
140 | __iwl_read_prph(trans, ofs) | mask); | |
e56b04ef | 141 | iwl_trans_release_nic_access(trans, &flags); |
bfe4b80e | 142 | } |
02a7fa00 | 143 | } |
48e29340 | 144 | IWL_EXPORT_SYMBOL(iwl_set_bits_prph); |
02a7fa00 | 145 | |
6a06b6c1 | 146 | void iwl_set_bits_mask_prph(struct iwl_trans *trans, u32 ofs, |
02a7fa00 JB |
147 | u32 bits, u32 mask) |
148 | { | |
149 | unsigned long flags; | |
150 | ||
e56b04ef | 151 | if (iwl_trans_grab_nic_access(trans, false, &flags)) { |
6a06b6c1 EG |
152 | __iwl_write_prph(trans, ofs, |
153 | (__iwl_read_prph(trans, ofs) & mask) | bits); | |
e56b04ef | 154 | iwl_trans_release_nic_access(trans, &flags); |
bfe4b80e | 155 | } |
02a7fa00 | 156 | } |
48e29340 | 157 | IWL_EXPORT_SYMBOL(iwl_set_bits_mask_prph); |
02a7fa00 | 158 | |
6a06b6c1 | 159 | void iwl_clear_bits_prph(struct iwl_trans *trans, u32 ofs, u32 mask) |
02a7fa00 JB |
160 | { |
161 | unsigned long flags; | |
162 | u32 val; | |
163 | ||
e56b04ef | 164 | if (iwl_trans_grab_nic_access(trans, false, &flags)) { |
6a06b6c1 EG |
165 | val = __iwl_read_prph(trans, ofs); |
166 | __iwl_write_prph(trans, ofs, (val & ~mask)); | |
e56b04ef | 167 | iwl_trans_release_nic_access(trans, &flags); |
bfe4b80e | 168 | } |
02a7fa00 | 169 | } |
48e29340 | 170 | IWL_EXPORT_SYMBOL(iwl_clear_bits_prph); |
313b0a29 IH |
171 | |
172 | static const char *get_fh_string(int cmd) | |
173 | { | |
174 | #define IWL_CMD(x) case x: return #x | |
175 | switch (cmd) { | |
176 | IWL_CMD(FH_RSCSR_CHNL0_STTS_WPTR_REG); | |
177 | IWL_CMD(FH_RSCSR_CHNL0_RBDCB_BASE_REG); | |
178 | IWL_CMD(FH_RSCSR_CHNL0_WPTR); | |
179 | IWL_CMD(FH_MEM_RCSR_CHNL0_CONFIG_REG); | |
180 | IWL_CMD(FH_MEM_RSSR_SHARED_CTRL_REG); | |
181 | IWL_CMD(FH_MEM_RSSR_RX_STATUS_REG); | |
182 | IWL_CMD(FH_MEM_RSSR_RX_ENABLE_ERR_IRQ2DRV); | |
183 | IWL_CMD(FH_TSSR_TX_STATUS_REG); | |
184 | IWL_CMD(FH_TSSR_TX_ERROR_REG); | |
185 | default: | |
186 | return "UNKNOWN"; | |
187 | } | |
188 | #undef IWL_CMD | |
189 | } | |
190 | ||
191 | int iwl_dump_fh(struct iwl_trans *trans, char **buf) | |
192 | { | |
193 | int i; | |
194 | static const u32 fh_tbl[] = { | |
195 | FH_RSCSR_CHNL0_STTS_WPTR_REG, | |
196 | FH_RSCSR_CHNL0_RBDCB_BASE_REG, | |
197 | FH_RSCSR_CHNL0_WPTR, | |
198 | FH_MEM_RCSR_CHNL0_CONFIG_REG, | |
199 | FH_MEM_RSSR_SHARED_CTRL_REG, | |
200 | FH_MEM_RSSR_RX_STATUS_REG, | |
201 | FH_MEM_RSSR_RX_ENABLE_ERR_IRQ2DRV, | |
202 | FH_TSSR_TX_STATUS_REG, | |
203 | FH_TSSR_TX_ERROR_REG | |
204 | }; | |
205 | ||
206 | #ifdef CONFIG_IWLWIFI_DEBUGFS | |
207 | if (buf) { | |
208 | int pos = 0; | |
209 | size_t bufsz = ARRAY_SIZE(fh_tbl) * 48 + 40; | |
210 | ||
211 | *buf = kmalloc(bufsz, GFP_KERNEL); | |
212 | if (!*buf) | |
213 | return -ENOMEM; | |
214 | ||
215 | pos += scnprintf(*buf + pos, bufsz - pos, | |
216 | "FH register values:\n"); | |
217 | ||
218 | for (i = 0; i < ARRAY_SIZE(fh_tbl); i++) | |
219 | pos += scnprintf(*buf + pos, bufsz - pos, | |
220 | " %34s: 0X%08x\n", | |
221 | get_fh_string(fh_tbl[i]), | |
222 | iwl_read_direct32(trans, fh_tbl[i])); | |
223 | ||
224 | return pos; | |
225 | } | |
226 | #endif | |
227 | ||
228 | IWL_ERR(trans, "FH register values:\n"); | |
229 | for (i = 0; i < ARRAY_SIZE(fh_tbl); i++) | |
230 | IWL_ERR(trans, " %34s: 0X%08x\n", | |
231 | get_fh_string(fh_tbl[i]), | |
232 | iwl_read_direct32(trans, fh_tbl[i])); | |
233 | ||
234 | return 0; | |
235 | } |