1 /******************************************************************************
3 * Copyright(c) 2003 - 2013 Intel Corporation. All rights reserved.
5 * Portions of this file are derived from the ipw3945 project.
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.
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
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
20 * The full GNU General Public License is included in this distribution in the
21 * file called LICENSE.
23 * Contact Information:
24 * Intel Linux Wireless <ilw@linux.intel.com>
25 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *****************************************************************************/
28 #include <linux/delay.h>
29 #include <linux/device.h>
30 #include <linux/export.h>
35 #include "iwl-debug.h"
38 #define IWL_POLL_INTERVAL 10 /* microseconds */
40 int iwl_poll_bit(struct iwl_trans *trans, u32 addr,
41 u32 bits, u32 mask, int timeout)
46 if ((iwl_read32(trans, addr) & mask) == (bits & mask))
48 udelay(IWL_POLL_INTERVAL);
49 t += IWL_POLL_INTERVAL;
50 } while (t < timeout);
54 IWL_EXPORT_SYMBOL(iwl_poll_bit);
56 u32 iwl_read_direct32(struct iwl_trans *trans, u32 reg)
58 u32 value = 0x5a5a5a5a;
60 if (iwl_trans_grab_nic_access(trans, false, &flags)) {
61 value = iwl_read32(trans, reg);
62 iwl_trans_release_nic_access(trans, &flags);
67 IWL_EXPORT_SYMBOL(iwl_read_direct32);
69 void iwl_write_direct32(struct iwl_trans *trans, u32 reg, u32 value)
73 if (iwl_trans_grab_nic_access(trans, false, &flags)) {
74 iwl_write32(trans, reg, value);
75 iwl_trans_release_nic_access(trans, &flags);
78 IWL_EXPORT_SYMBOL(iwl_write_direct32);
80 int iwl_poll_direct_bit(struct iwl_trans *trans, u32 addr, u32 mask,
86 if ((iwl_read_direct32(trans, addr) & mask) == mask)
88 udelay(IWL_POLL_INTERVAL);
89 t += IWL_POLL_INTERVAL;
90 } while (t < timeout);
94 IWL_EXPORT_SYMBOL(iwl_poll_direct_bit);
96 static inline u32 __iwl_read_prph(struct iwl_trans *trans, u32 ofs)
98 u32 val = iwl_trans_read_prph(trans, ofs);
99 trace_iwlwifi_dev_ioread_prph32(trans->dev, ofs, val);
103 static inline void __iwl_write_prph(struct iwl_trans *trans, u32 ofs, u32 val)
105 trace_iwlwifi_dev_iowrite_prph32(trans->dev, ofs, val);
106 iwl_trans_write_prph(trans, ofs, val);
109 u32 iwl_read_prph(struct iwl_trans *trans, u32 ofs)
112 u32 val = 0x5a5a5a5a;
114 if (iwl_trans_grab_nic_access(trans, false, &flags)) {
115 val = __iwl_read_prph(trans, ofs);
116 iwl_trans_release_nic_access(trans, &flags);
120 IWL_EXPORT_SYMBOL(iwl_read_prph);
122 void iwl_write_prph(struct iwl_trans *trans, u32 ofs, u32 val)
126 if (iwl_trans_grab_nic_access(trans, false, &flags)) {
127 __iwl_write_prph(trans, ofs, val);
128 iwl_trans_release_nic_access(trans, &flags);
131 IWL_EXPORT_SYMBOL(iwl_write_prph);
133 void iwl_set_bits_prph(struct iwl_trans *trans, u32 ofs, u32 mask)
137 if (iwl_trans_grab_nic_access(trans, false, &flags)) {
138 __iwl_write_prph(trans, ofs,
139 __iwl_read_prph(trans, ofs) | mask);
140 iwl_trans_release_nic_access(trans, &flags);
143 IWL_EXPORT_SYMBOL(iwl_set_bits_prph);
145 void iwl_set_bits_mask_prph(struct iwl_trans *trans, u32 ofs,
150 if (iwl_trans_grab_nic_access(trans, false, &flags)) {
151 __iwl_write_prph(trans, ofs,
152 (__iwl_read_prph(trans, ofs) & mask) | bits);
153 iwl_trans_release_nic_access(trans, &flags);
156 IWL_EXPORT_SYMBOL(iwl_set_bits_mask_prph);
158 void iwl_clear_bits_prph(struct iwl_trans *trans, u32 ofs, u32 mask)
163 if (iwl_trans_grab_nic_access(trans, false, &flags)) {
164 val = __iwl_read_prph(trans, ofs);
165 __iwl_write_prph(trans, ofs, (val & ~mask));
166 iwl_trans_release_nic_access(trans, &flags);
169 IWL_EXPORT_SYMBOL(iwl_clear_bits_prph);
171 static const char *get_fh_string(int cmd)
173 #define IWL_CMD(x) case x: return #x
175 IWL_CMD(FH_RSCSR_CHNL0_STTS_WPTR_REG);
176 IWL_CMD(FH_RSCSR_CHNL0_RBDCB_BASE_REG);
177 IWL_CMD(FH_RSCSR_CHNL0_WPTR);
178 IWL_CMD(FH_MEM_RCSR_CHNL0_CONFIG_REG);
179 IWL_CMD(FH_MEM_RSSR_SHARED_CTRL_REG);
180 IWL_CMD(FH_MEM_RSSR_RX_STATUS_REG);
181 IWL_CMD(FH_MEM_RSSR_RX_ENABLE_ERR_IRQ2DRV);
182 IWL_CMD(FH_TSSR_TX_STATUS_REG);
183 IWL_CMD(FH_TSSR_TX_ERROR_REG);
190 int iwl_dump_fh(struct iwl_trans *trans, char **buf)
193 static const u32 fh_tbl[] = {
194 FH_RSCSR_CHNL0_STTS_WPTR_REG,
195 FH_RSCSR_CHNL0_RBDCB_BASE_REG,
197 FH_MEM_RCSR_CHNL0_CONFIG_REG,
198 FH_MEM_RSSR_SHARED_CTRL_REG,
199 FH_MEM_RSSR_RX_STATUS_REG,
200 FH_MEM_RSSR_RX_ENABLE_ERR_IRQ2DRV,
201 FH_TSSR_TX_STATUS_REG,
205 #ifdef CONFIG_IWLWIFI_DEBUGFS
208 size_t bufsz = ARRAY_SIZE(fh_tbl) * 48 + 40;
210 *buf = kmalloc(bufsz, GFP_KERNEL);
214 pos += scnprintf(*buf + pos, bufsz - pos,
215 "FH register values:\n");
217 for (i = 0; i < ARRAY_SIZE(fh_tbl); i++)
218 pos += scnprintf(*buf + pos, bufsz - pos,
220 get_fh_string(fh_tbl[i]),
221 iwl_read_direct32(trans, fh_tbl[i]));
227 IWL_ERR(trans, "FH register values:\n");
228 for (i = 0; i < ARRAY_SIZE(fh_tbl); i++)
229 IWL_ERR(trans, " %34s: 0X%08x\n",
230 get_fh_string(fh_tbl[i]),
231 iwl_read_direct32(trans, fh_tbl[i]));