1 /** 2 * Copyright (c) 2014 Redpine Signals Inc. 3 * 4 * Permission to use, copy, modify, and/or distribute this software for any 5 * purpose with or without fee is hereby granted, provided that the above 6 * copyright notice and this permission notice appear in all copies. 7 * 8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 15 */ 16 17 #include <linux/etherdevice.h> 18 #include <linux/if.h> 19 #include <linux/version.h> 20 #include "rsi_debugfs.h" 21 #include "rsi_mgmt.h" 22 #include "rsi_common.h" 23 #include "rsi_ps.h" 24 25 char *str_psstate(enum ps_state state) 26 { 27 switch (state) { 28 case PS_NONE: 29 return "PS_NONE"; 30 case PS_DISABLE_REQ_SENT: 31 return "PS_DISABLE_REQ_SENT"; 32 case PS_ENABLE_REQ_SENT: 33 return "PS_ENABLE_REQ_SENT"; 34 case PS_ENABLED: 35 return "PS_ENABLED"; 36 default: 37 return "INVALID_STATE"; 38 } 39 return "INVALID_STATE"; 40 } 41 42 static inline void rsi_modify_ps_state(struct rsi_hw *adapter, 43 enum ps_state nstate) 44 { 45 rsi_dbg(INFO_ZONE, "PS state changed %s => %s\n", 46 str_psstate(adapter->ps_state), 47 str_psstate(nstate)); 48 49 adapter->ps_state = nstate; 50 } 51 52 void rsi_default_ps_params(struct rsi_hw *adapter) 53 { 54 struct rsi_ps_info *ps_info = &adapter->ps_info; 55 56 ps_info->enabled = true; 57 ps_info->sleep_type = RSI_SLEEP_TYPE_LP; 58 ps_info->tx_threshold = 0; 59 ps_info->rx_threshold = 0; 60 ps_info->tx_hysterisis = 0; 61 ps_info->rx_hysterisis = 0; 62 ps_info->monitor_interval = 0; 63 ps_info->listen_interval = RSI_DEF_LISTEN_INTERVAL; 64 ps_info->num_bcns_per_lis_int = 0; 65 ps_info->dtim_interval_duration = 0; 66 ps_info->num_dtims_per_sleep = 0; 67 ps_info->deep_sleep_wakeup_period = RSI_DEF_DS_WAKEUP_PERIOD; 68 } 69 70 void rsi_enable_ps(struct rsi_hw *adapter) 71 { 72 if (adapter->ps_state != PS_NONE) { 73 rsi_dbg(ERR_ZONE, 74 "%s: Cannot accept enable PS in %s state\n", 75 __func__, str_psstate(adapter->ps_state)); 76 return; 77 } 78 79 if (rsi_send_ps_request(adapter, true)) { 80 rsi_dbg(ERR_ZONE, 81 "%s: Failed to send PS request to device\n", 82 __func__); 83 return; 84 } 85 86 rsi_modify_ps_state(adapter, PS_ENABLE_REQ_SENT); 87 } 88 89 void rsi_disable_ps(struct rsi_hw *adapter) 90 { 91 if (adapter->ps_state != PS_ENABLED) { 92 rsi_dbg(ERR_ZONE, 93 "%s: Cannot accept disable PS in %s state\n", 94 __func__, str_psstate(adapter->ps_state)); 95 return; 96 } 97 98 if (rsi_send_ps_request(adapter, false)) { 99 rsi_dbg(ERR_ZONE, 100 "%s: Failed to send PS request to device\n", 101 __func__); 102 return; 103 } 104 105 rsi_modify_ps_state(adapter, PS_DISABLE_REQ_SENT); 106 } 107 108 void rsi_conf_uapsd(struct rsi_hw *adapter) 109 { 110 int ret; 111 112 if (adapter->ps_state != PS_ENABLED) 113 return; 114 115 ret = rsi_send_ps_request(adapter, false); 116 if (!ret) 117 ret = rsi_send_ps_request(adapter, true); 118 if (ret) 119 rsi_dbg(ERR_ZONE, 120 "%s: Failed to send PS request to device\n", 121 __func__); 122 } 123 124 int rsi_handle_ps_confirm(struct rsi_hw *adapter, u8 *msg) 125 { 126 u16 cfm_type = get_unaligned_le16(msg + PS_CONFIRM_INDEX); 127 128 switch (cfm_type) { 129 case RSI_SLEEP_REQUEST: 130 if (adapter->ps_state == PS_ENABLE_REQ_SENT) 131 rsi_modify_ps_state(adapter, PS_ENABLED); 132 break; 133 case RSI_WAKEUP_REQUEST: 134 if (adapter->ps_state == PS_DISABLE_REQ_SENT) 135 rsi_modify_ps_state(adapter, PS_NONE); 136 break; 137 default: 138 rsi_dbg(ERR_ZONE, 139 "Invalid PS confirm type %x in state %s\n", 140 cfm_type, str_psstate(adapter->ps_state)); 141 return -1; 142 } 143 144 return 0; 145 } 146 147