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 - 2011 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 LICENSE.GPL.
  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 - 2011 Intel Corporation. All rights reserved.
  34  * All rights reserved.
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  36  * Redistribution and use in source and binary forms, with or without
  37  * modification, are permitted provided that the following conditions
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  40  *  * Redistributions of source code must retain the above copyright
  41  *    notice, this list of conditions and the following disclaimer.
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  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
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  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 /**
 101  * Tx Scheduler
 102  *
 103  * The Tx Scheduler selects the next frame to be transmitted, choosing TFDs
 104  * (Transmit Frame Descriptors) from up to 16 circular Tx queues resident in
 105  * host DRAM.  It steers each frame's Tx command (which contains the frame
 106  * data) into one of up to 7 prioritized Tx DMA FIFO channels within the
 107  * device.  A queue maps to only one (selectable by driver) Tx DMA channel,
 108  * but one DMA channel may take input from several queues.
 109  *
 110  * Tx DMA FIFOs have dedicated purposes.
 111  *
 112  * For 5000 series and up, they are used differently
 113  * (cf. iwl5000_default_queue_to_tx_fifo in iwl-5000.c):
 114  *
 115  * 0 -- EDCA BK (background) frames, lowest priority
 116  * 1 -- EDCA BE (best effort) frames, normal priority
 117  * 2 -- EDCA VI (video) frames, higher priority
 118  * 3 -- EDCA VO (voice) and management frames, highest priority
 119  * 4 -- unused
 120  * 5 -- unused
 121  * 6 -- unused
 122  * 7 -- Commands
 123  *
 124  * Driver should normally map queues 0-6 to Tx DMA/FIFO channels 0-6.
 125  * In addition, driver can map the remaining queues to Tx DMA/FIFO
 126  * channels 0-3 to support 11n aggregation via EDCA DMA channels.
 127  *
 128  * The driver sets up each queue to work in one of two modes:
 129  *
 130  * 1)  Scheduler-Ack, in which the scheduler automatically supports a
 131  *     block-ack (BA) window of up to 64 TFDs.  In this mode, each queue
 132  *     contains TFDs for a unique combination of Recipient Address (RA)
 133  *     and Traffic Identifier (TID), that is, traffic of a given
 134  *     Quality-Of-Service (QOS) priority, destined for a single station.
 135  *
 136  *     In scheduler-ack mode, the scheduler keeps track of the Tx status of
 137  *     each frame within the BA window, including whether it's been transmitted,
 138  *     and whether it's been acknowledged by the receiving station.  The device
 139  *     automatically processes block-acks received from the receiving STA,
 140  *     and reschedules un-acked frames to be retransmitted (successful
 141  *     Tx completion may end up being out-of-order).
 142  *
 143  *     The driver must maintain the queue's Byte Count table in host DRAM
 144  *     for this mode.
 145  *     This mode does not support fragmentation.
 146  *
 147  * 2)  FIFO (a.k.a. non-Scheduler-ACK), in which each TFD is processed in order.
 148  *     The device may automatically retry Tx, but will retry only one frame
 149  *     at a time, until receiving ACK from receiving station, or reaching
 150  *     retry limit and giving up.
 151  *
 152  *     The command queue (#4/#9) must use this mode!
 153  *     This mode does not require use of the Byte Count table in host DRAM.
 154  *
 155  * Driver controls scheduler operation via 3 means:
 156  * 1)  Scheduler registers
 157  * 2)  Shared scheduler data base in internal SRAM
 158  * 3)  Shared data in host DRAM
 159  *
 160  * Initialization:
 161  *
 162  * When loading, driver should allocate memory for:
 163  * 1)  16 TFD circular buffers, each with space for (typically) 256 TFDs.
 164  * 2)  16 Byte Count circular buffers in 16 KBytes contiguous memory
 165  *     (1024 bytes for each queue).
 166  *
 167  * After receiving "Alive" response from uCode, driver must initialize
 168  * the scheduler (especially for queue #4/#9, the command queue, otherwise
 169  * the driver can't issue commands!):
 170  */
 171 #define SCD_MEM_LOWER_BOUND             (0x0000)
 172
 173 /**
 174  * Max Tx window size is the max number of contiguous TFDs that the scheduler
 175  * can keep track of at one time when creating block-ack chains of frames.
 176  * Note that "64" matches the number of ack bits in a block-ack packet.
 177  */
 178 #define SCD_WIN_SIZE                            64
 179 #define SCD_FRAME_LIMIT                         64
 180
 181 #define SCD_TXFIFO_POS_TID                      (0)
 182 #define SCD_TXFIFO_POS_RA                       (4)
 183 #define SCD_QUEUE_RA_TID_MAP_RATID_MSK  (0x01FF)
 184
 185 /* agn SCD */
 186 #define SCD_QUEUE_STTS_REG_POS_TXF      (0)
 187 #define SCD_QUEUE_STTS_REG_POS_ACTIVE   (3)
 188 #define SCD_QUEUE_STTS_REG_POS_WSL      (4)
 189 #define SCD_QUEUE_STTS_REG_POS_SCD_ACT_EN (19)
 190 #define SCD_QUEUE_STTS_REG_MSK          (0x00FF0000)
 191
 192 #define SCD_QUEUE_CTX_REG1_CREDIT_POS           (8)
 193 #define SCD_QUEUE_CTX_REG1_CREDIT_MSK           (0x00FFFF00)
 194 #define SCD_QUEUE_CTX_REG1_SUPER_CREDIT_POS     (24)
 195 #define SCD_QUEUE_CTX_REG1_SUPER_CREDIT_MSK     (0xFF000000)
 196 #define SCD_QUEUE_CTX_REG2_WIN_SIZE_POS         (0)
 197 #define SCD_QUEUE_CTX_REG2_WIN_SIZE_MSK         (0x0000007F)
 198 #define SCD_QUEUE_CTX_REG2_FRAME_LIMIT_POS      (16)
 199 #define SCD_QUEUE_CTX_REG2_FRAME_LIMIT_MSK      (0x007F0000)
 200
 201 /* Context Data */
 202 #define SCD_CONTEXT_MEM_LOWER_BOUND     (SCD_MEM_LOWER_BOUND + 0x600)
 203 #define SCD_CONTEXT_MEM_UPPER_BOUND     (SCD_MEM_LOWER_BOUND + 0x6A0)
 204
 205 /* Tx status */
 206 #define SCD_TX_STTS_MEM_LOWER_BOUND     (SCD_MEM_LOWER_BOUND + 0x6A0)
 207 #define SCD_TX_STTS_MEM_UPPER_BOUND     (SCD_MEM_LOWER_BOUND + 0x7E0)
 208
 209 /* Translation Data */
 210 #define SCD_TRANS_TBL_MEM_LOWER_BOUND   (SCD_MEM_LOWER_BOUND + 0x7E0)
 211 #define SCD_TRANS_TBL_MEM_UPPER_BOUND   (SCD_MEM_LOWER_BOUND + 0x808)
 212
 213 #define SCD_CONTEXT_QUEUE_OFFSET(x)\
 214         (SCD_CONTEXT_MEM_LOWER_BOUND + ((x) * 8))
 215
 216 #define SCD_TRANS_TBL_OFFSET_QUEUE(x) \
 217         ((SCD_TRANS_TBL_MEM_LOWER_BOUND + ((x) * 2)) & 0xfffc)
 218
 219 #define SCD_QUEUECHAIN_SEL_ALL(priv)    \
 220         (((1<<hw_params(priv).max_txq_num) - 1) &\
 221         (~(1<<(priv)->shrd->cmd_queue)))
 222
 223 #define SCD_BASE                        (PRPH_BASE + 0xa02c00)
 224
 225 #define SCD_SRAM_BASE_ADDR      (SCD_BASE + 0x0)
 226 #define SCD_DRAM_BASE_ADDR      (SCD_BASE + 0x8)
 227 #define SCD_AIT                 (SCD_BASE + 0x0c)
 228 #define SCD_TXFACT              (SCD_BASE + 0x10)
 229 #define SCD_ACTIVE              (SCD_BASE + 0x14)
 230 #define SCD_QUEUECHAIN_SEL      (SCD_BASE + 0xe8)
 231 #define SCD_AGGR_SEL            (SCD_BASE + 0x248)
 232 #define SCD_INTERRUPT_MASK      (SCD_BASE + 0x108)
 233
 234 static inline unsigned int SCD_QUEUE_WRPTR(unsigned int chnl)
 235 {
 236         if (chnl < 20)
 237                 return SCD_BASE + 0x18 + chnl * 4;
 238         WARN_ON_ONCE(chnl >= 32);
 239         return SCD_BASE + 0x284 + (chnl - 20) * 4;
 240 }
 241
 242 static inline unsigned int SCD_QUEUE_RDPTR(unsigned int chnl)
 243 {
 244         if (chnl < 20)
 245                 return SCD_BASE + 0x68 + chnl * 4;
 246         WARN_ON_ONCE(chnl >= 32);
 247         return SCD_BASE + 0x2B4 + (chnl - 20) * 4;
 248 }
 249
 250 static inline unsigned int SCD_QUEUE_STATUS_BITS(unsigned int chnl)
 251 {
 252         if (chnl < 20)
 253                 return SCD_BASE + 0x10c + chnl * 4;
 254         WARN_ON_ONCE(chnl >= 32);
 255         return SCD_BASE + 0x384 + (chnl - 20) * 4;
 256 }
 257
 258 /*********************** END TX SCHEDULER *************************************/
 259
 260 #endif                          /* __iwl_prph_h__ */