drivers/net/wireless/iwlwifi/iwl-prph.h

   1 /******************************************************************************
   2  *
   3  * This file is provided under a dual BSD/GPLv2 license.  When using or
   4  * redistributing this file, you may do so under either license.
   5  *
   6  * GPL LICENSE SUMMARY
   7  *
   8  * Copyright(c) 2005 - 2013 Intel Corporation. All rights reserved.
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of version 2 of the GNU General Public License as
  12  * published by the Free Software Foundation.
  13  *
  14  * This program is distributed in the hope that it will be useful, but
  15  * WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
  22  * USA
  23  *
  24  * The full GNU General Public License is included in this distribution
  25  * in the file called COPYING.
  26  *
  27  * Contact Information:
  28  *  Intel Linux Wireless <ilw@linux.intel.com>
  29  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  30  *
  31  * BSD LICENSE
  32  *
  33  * Copyright(c) 2005 - 2013 Intel Corporation. All rights reserved.
  34  * All rights reserved.
  35  *
  36  * Redistribution and use in source and binary forms, with or without
  37  * modification, are permitted provided that the following conditions
  38  * are met:
  39  *
  40  *  * Redistributions of source code must retain the above copyright
  41  *    notice, this list of conditions and the following disclaimer.
  42  *  * Redistributions in binary form must reproduce the above copyright
  43  *    notice, this list of conditions and the following disclaimer in
  44  *    the documentation and/or other materials provided with the
  45  *    distribution.
  46  *  * Neither the name Intel Corporation nor the names of its
  47  *    contributors may be used to endorse or promote products derived
  48  *    from this software without specific prior written permission.
  49  *
  50  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  51  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  52  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  53  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  54  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  55  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  56  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  57  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  58  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  59  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  60  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  61  *****************************************************************************/
  62
  63 #ifndef __iwl_prph_h__
  64 #define __iwl_prph_h__
  65
  66 /*
  67  * Registers in this file are internal, not PCI bus memory mapped.
  68  * Driver accesses these via HBUS_TARG_PRPH_* registers.
  69  */
  70 #define PRPH_BASE       (0x00000)
  71 #define PRPH_END        (0xFFFFF)
  72
  73 /* APMG (power management) constants */
  74 #define APMG_BASE                       (PRPH_BASE + 0x3000)
  75 #define APMG_CLK_CTRL_REG               (APMG_BASE + 0x0000)
  76 #define APMG_CLK_EN_REG                 (APMG_BASE + 0x0004)
  77 #define APMG_CLK_DIS_REG                (APMG_BASE + 0x0008)
  78 #define APMG_PS_CTRL_REG                (APMG_BASE + 0x000c)
  79 #define APMG_PCIDEV_STT_REG             (APMG_BASE + 0x0010)
  80 #define APMG_RFKILL_REG                 (APMG_BASE + 0x0014)
  81 #define APMG_RTC_INT_STT_REG            (APMG_BASE + 0x001c)
  82 #define APMG_RTC_INT_MSK_REG            (APMG_BASE + 0x0020)
  83 #define APMG_DIGITAL_SVR_REG            (APMG_BASE + 0x0058)
  84 #define APMG_ANALOG_SVR_REG             (APMG_BASE + 0x006C)
  85
  86 #define APMS_CLK_VAL_MRB_FUNC_MODE      (0x00000001)
  87 #define APMG_CLK_VAL_DMA_CLK_RQT        (0x00000200)
  88 #define APMG_CLK_VAL_BSM_CLK_RQT        (0x00000800)
  89
  90 #define APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS    (0x00400000)
  91 #define APMG_PS_CTRL_VAL_RESET_REQ              (0x04000000)
  92 #define APMG_PS_CTRL_MSK_PWR_SRC                (0x03000000)
  93 #define APMG_PS_CTRL_VAL_PWR_SRC_VMAIN          (0x00000000)
  94 #define APMG_PS_CTRL_VAL_PWR_SRC_VAUX           (0x02000000)
  95 #define APMG_SVR_VOLTAGE_CONFIG_BIT_MSK (0x000001E0) /* bit 8:5 */
  96 #define APMG_SVR_DIGITAL_VOLTAGE_1_32           (0x00000060)
  97
  98 #define APMG_PCIDEV_STT_VAL_L1_ACT_DIS          (0x00000800)
  99
 100 #define APMG_RTC_INT_STT_RFKILL         (0x10000000)
 101
 102 /* Device system time */
 103 #define DEVICE_SYSTEM_TIME_REG 0xA0206C
 104
 105 /*****************************************************************************
 106  *                        7000/3000 series SHR DTS addresses                 *
 107  *****************************************************************************/
 108
 109 #define SHR_MISC_WFM_DTS_EN     (0x00a10024)
 110 #define DTSC_CFG_MODE           (0x00a10604)
 111 #define DTSC_VREF_AVG           (0x00a10648)
 112 #define DTSC_VREF5_AVG          (0x00a1064c)
 113 #define DTSC_CFG_MODE_PERIODIC  (0x2)
 114 #define DTSC_PTAT_AVG           (0x00a10650)
 115
 116
 117 /**
 118  * Tx Scheduler
 119  *
 120  * The Tx Scheduler selects the next frame to be transmitted, choosing TFDs
 121  * (Transmit Frame Descriptors) from up to 16 circular Tx queues resident in
 122  * host DRAM.  It steers each frame's Tx command (which contains the frame
 123  * data) into one of up to 7 prioritized Tx DMA FIFO channels within the
 124  * device.  A queue maps to only one (selectable by driver) Tx DMA channel,
 125  * but one DMA channel may take input from several queues.
 126  *
 127  * Tx DMA FIFOs have dedicated purposes.
 128  *
 129  * For 5000 series and up, they are used differently
 130  * (cf. iwl5000_default_queue_to_tx_fifo in iwl-5000.c):
 131  *
 132  * 0 -- EDCA BK (background) frames, lowest priority
 133  * 1 -- EDCA BE (best effort) frames, normal priority
 134  * 2 -- EDCA VI (video) frames, higher priority
 135  * 3 -- EDCA VO (voice) and management frames, highest priority
 136  * 4 -- unused
 137  * 5 -- unused
 138  * 6 -- unused
 139  * 7 -- Commands
 140  *
 141  * Driver should normally map queues 0-6 to Tx DMA/FIFO channels 0-6.
 142  * In addition, driver can map the remaining queues to Tx DMA/FIFO
 143  * channels 0-3 to support 11n aggregation via EDCA DMA channels.
 144  *
 145  * The driver sets up each queue to work in one of two modes:
 146  *
 147  * 1)  Scheduler-Ack, in which the scheduler automatically supports a
 148  *     block-ack (BA) window of up to 64 TFDs.  In this mode, each queue
 149  *     contains TFDs for a unique combination of Recipient Address (RA)
 150  *     and Traffic Identifier (TID), that is, traffic of a given
 151  *     Quality-Of-Service (QOS) priority, destined for a single station.
 152  *
 153  *     In scheduler-ack mode, the scheduler keeps track of the Tx status of
 154  *     each frame within the BA window, including whether it's been transmitted,
 155  *     and whether it's been acknowledged by the receiving station.  The device
 156  *     automatically processes block-acks received from the receiving STA,
 157  *     and reschedules un-acked frames to be retransmitted (successful
 158  *     Tx completion may end up being out-of-order).
 159  *
 160  *     The driver must maintain the queue's Byte Count table in host DRAM
 161  *     for this mode.
 162  *     This mode does not support fragmentation.
 163  *
 164  * 2)  FIFO (a.k.a. non-Scheduler-ACK), in which each TFD is processed in order.
 165  *     The device may automatically retry Tx, but will retry only one frame
 166  *     at a time, until receiving ACK from receiving station, or reaching
 167  *     retry limit and giving up.
 168  *
 169  *     The command queue (#4/#9) must use this mode!
 170  *     This mode does not require use of the Byte Count table in host DRAM.
 171  *
 172  * Driver controls scheduler operation via 3 means:
 173  * 1)  Scheduler registers
 174  * 2)  Shared scheduler data base in internal SRAM
 175  * 3)  Shared data in host DRAM
 176  *
 177  * Initialization:
 178  *
 179  * When loading, driver should allocate memory for:
 180  * 1)  16 TFD circular buffers, each with space for (typically) 256 TFDs.
 181  * 2)  16 Byte Count circular buffers in 16 KBytes contiguous memory
 182  *     (1024 bytes for each queue).
 183  *
 184  * After receiving "Alive" response from uCode, driver must initialize
 185  * the scheduler (especially for queue #4/#9, the command queue, otherwise
 186  * the driver can't issue commands!):
 187  */
 188 #define SCD_MEM_LOWER_BOUND             (0x0000)
 189
 190 /**
 191  * Max Tx window size is the max number of contiguous TFDs that the scheduler
 192  * can keep track of at one time when creating block-ack chains of frames.
 193  * Note that "64" matches the number of ack bits in a block-ack packet.
 194  */
 195 #define SCD_WIN_SIZE                            64
 196 #define SCD_FRAME_LIMIT                         64
 197
 198 #define SCD_TXFIFO_POS_TID                      (0)
 199 #define SCD_TXFIFO_POS_RA                       (4)
 200 #define SCD_QUEUE_RA_TID_MAP_RATID_MSK  (0x01FF)
 201
 202 /* agn SCD */
 203 #define SCD_QUEUE_STTS_REG_POS_TXF      (0)
 204 #define SCD_QUEUE_STTS_REG_POS_ACTIVE   (3)
 205 #define SCD_QUEUE_STTS_REG_POS_WSL      (4)
 206 #define SCD_QUEUE_STTS_REG_POS_SCD_ACT_EN (19)
 207 #define SCD_QUEUE_STTS_REG_MSK          (0x017F0000)
 208
 209 #define SCD_QUEUE_CTX_REG1_CREDIT_POS           (8)
 210 #define SCD_QUEUE_CTX_REG1_CREDIT_MSK           (0x00FFFF00)
 211 #define SCD_QUEUE_CTX_REG1_SUPER_CREDIT_POS     (24)
 212 #define SCD_QUEUE_CTX_REG1_SUPER_CREDIT_MSK     (0xFF000000)
 213 #define SCD_QUEUE_CTX_REG2_WIN_SIZE_POS         (0)
 214 #define SCD_QUEUE_CTX_REG2_WIN_SIZE_MSK         (0x0000007F)
 215 #define SCD_QUEUE_CTX_REG2_FRAME_LIMIT_POS      (16)
 216 #define SCD_QUEUE_CTX_REG2_FRAME_LIMIT_MSK      (0x007F0000)
 217
 218 /* Context Data */
 219 #define SCD_CONTEXT_MEM_LOWER_BOUND     (SCD_MEM_LOWER_BOUND + 0x600)
 220 #define SCD_CONTEXT_MEM_UPPER_BOUND     (SCD_MEM_LOWER_BOUND + 0x6A0)
 221
 222 /* Tx status */
 223 #define SCD_TX_STTS_MEM_LOWER_BOUND     (SCD_MEM_LOWER_BOUND + 0x6A0)
 224 #define SCD_TX_STTS_MEM_UPPER_BOUND     (SCD_MEM_LOWER_BOUND + 0x7E0)
 225
 226 /* Translation Data */
 227 #define SCD_TRANS_TBL_MEM_LOWER_BOUND   (SCD_MEM_LOWER_BOUND + 0x7E0)
 228 #define SCD_TRANS_TBL_MEM_UPPER_BOUND   (SCD_MEM_LOWER_BOUND + 0x808)
 229
 230 #define SCD_CONTEXT_QUEUE_OFFSET(x)\
 231         (SCD_CONTEXT_MEM_LOWER_BOUND + ((x) * 8))
 232
 233 #define SCD_TX_STTS_QUEUE_OFFSET(x)\
 234         (SCD_TX_STTS_MEM_LOWER_BOUND + ((x) * 16))
 235
 236 #define SCD_TRANS_TBL_OFFSET_QUEUE(x) \
 237         ((SCD_TRANS_TBL_MEM_LOWER_BOUND + ((x) * 2)) & 0xfffc)
 238
 239 #define SCD_BASE                        (PRPH_BASE + 0xa02c00)
 240
 241 #define SCD_SRAM_BASE_ADDR      (SCD_BASE + 0x0)
 242 #define SCD_DRAM_BASE_ADDR      (SCD_BASE + 0x8)
 243 #define SCD_AIT                 (SCD_BASE + 0x0c)
 244 #define SCD_TXFACT              (SCD_BASE + 0x10)
 245 #define SCD_ACTIVE              (SCD_BASE + 0x14)
 246 #define SCD_QUEUECHAIN_SEL      (SCD_BASE + 0xe8)
 247 #define SCD_CHAINEXT_EN         (SCD_BASE + 0x244)
 248 #define SCD_AGGR_SEL            (SCD_BASE + 0x248)
 249 #define SCD_INTERRUPT_MASK      (SCD_BASE + 0x108)
 250
 251 static inline unsigned int SCD_QUEUE_WRPTR(unsigned int chnl)
 252 {
 253         if (chnl < 20)
 254                 return SCD_BASE + 0x18 + chnl * 4;
 255         WARN_ON_ONCE(chnl >= 32);
 256         return SCD_BASE + 0x284 + (chnl - 20) * 4;
 257 }
 258
 259 static inline unsigned int SCD_QUEUE_RDPTR(unsigned int chnl)
 260 {
 261         if (chnl < 20)
 262                 return SCD_BASE + 0x68 + chnl * 4;
 263         WARN_ON_ONCE(chnl >= 32);
 264         return SCD_BASE + 0x2B4 + (chnl - 20) * 4;
 265 }
 266
 267 static inline unsigned int SCD_QUEUE_STATUS_BITS(unsigned int chnl)
 268 {
 269         if (chnl < 20)
 270                 return SCD_BASE + 0x10c + chnl * 4;
 271         WARN_ON_ONCE(chnl >= 32);
 272         return SCD_BASE + 0x384 + (chnl - 20) * 4;
 273 }
 274
 275 /*********************** END TX SCHEDULER *************************************/
 276
 277 #endif                          /* __iwl_prph_h__ */