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Since TFD was enlarged to 256 bytes, the fetch of the TFD itself is very expensive. To make DRAM to SRAM more efficient, bits 12-13 will indicate the number of 64 byte chunks that should be transferred to SRAM. Signed-off-by: Sara Sharon <sara.sharon@intel.com> Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
749 lines
30 KiB
C
749 lines
30 KiB
C
/******************************************************************************
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*
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* This file is provided under a dual BSD/GPLv2 license. When using or
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* redistributing this file, you may do so under either license.
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*
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* GPL LICENSE SUMMARY
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*
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* Copyright(c) 2005 - 2014 Intel Corporation. All rights reserved.
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* Copyright(c) 2015 - 2016 Intel Deutschland GmbH
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
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* USA
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*
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* The full GNU General Public License is included in this distribution
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* in the file called COPYING.
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*
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* Contact Information:
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* Intel Linux Wireless <linuxwifi@intel.com>
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* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
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*
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* BSD LICENSE
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*
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* Copyright(c) 2005 - 2014 Intel Corporation. All rights reserved.
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* Copyright(c) 2015 - 2016 Intel Deutschland GmbH
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*****************************************************************************/
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#ifndef __iwl_fh_h__
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#define __iwl_fh_h__
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#include <linux/types.h>
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/****************************/
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/* Flow Handler Definitions */
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/****************************/
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/**
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* This I/O area is directly read/writable by driver (e.g. Linux uses writel())
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* Addresses are offsets from device's PCI hardware base address.
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*/
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#define FH_MEM_LOWER_BOUND (0x1000)
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#define FH_MEM_UPPER_BOUND (0x2000)
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/**
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* Keep-Warm (KW) buffer base address.
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*
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* Driver must allocate a 4KByte buffer that is for keeping the
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* host DRAM powered on (via dummy accesses to DRAM) to maintain low-latency
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* DRAM access when doing Txing or Rxing. The dummy accesses prevent host
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* from going into a power-savings mode that would cause higher DRAM latency,
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* and possible data over/under-runs, before all Tx/Rx is complete.
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*
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* Driver loads FH_KW_MEM_ADDR_REG with the physical address (bits 35:4)
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* of the buffer, which must be 4K aligned. Once this is set up, the device
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* automatically invokes keep-warm accesses when normal accesses might not
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* be sufficient to maintain fast DRAM response.
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*
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* Bit fields:
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* 31-0: Keep-warm buffer physical base address [35:4], must be 4K aligned
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*/
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#define FH_KW_MEM_ADDR_REG (FH_MEM_LOWER_BOUND + 0x97C)
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/**
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* TFD Circular Buffers Base (CBBC) addresses
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*
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* Device has 16 base pointer registers, one for each of 16 host-DRAM-resident
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* circular buffers (CBs/queues) containing Transmit Frame Descriptors (TFDs)
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* (see struct iwl_tfd_frame). These 16 pointer registers are offset by 0x04
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* bytes from one another. Each TFD circular buffer in DRAM must be 256-byte
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* aligned (address bits 0-7 must be 0).
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* Later devices have 20 (5000 series) or 30 (higher) queues, but the registers
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* for them are in different places.
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*
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* Bit fields in each pointer register:
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* 27-0: TFD CB physical base address [35:8], must be 256-byte aligned
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*/
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#define FH_MEM_CBBC_0_15_LOWER_BOUND (FH_MEM_LOWER_BOUND + 0x9D0)
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#define FH_MEM_CBBC_0_15_UPPER_BOUND (FH_MEM_LOWER_BOUND + 0xA10)
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#define FH_MEM_CBBC_16_19_LOWER_BOUND (FH_MEM_LOWER_BOUND + 0xBF0)
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#define FH_MEM_CBBC_16_19_UPPER_BOUND (FH_MEM_LOWER_BOUND + 0xC00)
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#define FH_MEM_CBBC_20_31_LOWER_BOUND (FH_MEM_LOWER_BOUND + 0xB20)
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#define FH_MEM_CBBC_20_31_UPPER_BOUND (FH_MEM_LOWER_BOUND + 0xB80)
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/* a000 TFD table address, 64 bit */
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#define TFH_TFDQ_CBB_TABLE (0x1C00)
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/* Find TFD CB base pointer for given queue */
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static inline unsigned int FH_MEM_CBBC_QUEUE(struct iwl_trans *trans,
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unsigned int chnl)
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{
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if (trans->cfg->use_tfh) {
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WARN_ON_ONCE(chnl >= 64);
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return TFH_TFDQ_CBB_TABLE + 8 * chnl;
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}
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if (chnl < 16)
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return FH_MEM_CBBC_0_15_LOWER_BOUND + 4 * chnl;
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if (chnl < 20)
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return FH_MEM_CBBC_16_19_LOWER_BOUND + 4 * (chnl - 16);
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WARN_ON_ONCE(chnl >= 32);
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return FH_MEM_CBBC_20_31_LOWER_BOUND + 4 * (chnl - 20);
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}
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/* a000 configuration registers */
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/*
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* TFH Configuration register.
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*
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* BIT fields:
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*
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* Bits 3:0:
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* Define the maximum number of pending read requests.
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* Maximum configration value allowed is 0xC
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* Bits 9:8:
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* Define the maximum transfer size. (64 / 128 / 256)
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* Bit 10:
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* When bit is set and transfer size is set to 128B, the TFH will enable
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* reading chunks of more than 64B only if the read address is aligned to 128B.
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* In case of DRAM read address which is not aligned to 128B, the TFH will
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* enable transfer size which doesn't cross 64B DRAM address boundary.
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*/
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#define TFH_TRANSFER_MODE (0x1F40)
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#define TFH_TRANSFER_MAX_PENDING_REQ 0xc
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#define TFH_CHUNK_SIZE_128 BIT(8)
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#define TFH_CHUNK_SPLIT_MODE BIT(10)
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/*
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* Defines the offset address in dwords referring from the beginning of the
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* Tx CMD which will be updated in DRAM.
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* Note that the TFH offset address for Tx CMD update is always referring to
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* the start of the TFD first TB.
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* In case of a DRAM Tx CMD update the TFH will update PN and Key ID
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*/
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#define TFH_TXCMD_UPDATE_CFG (0x1F48)
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/*
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* Controls TX DMA operation
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*
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* BIT fields:
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*
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* Bits 31:30: Enable the SRAM DMA channel.
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* Turning on bit 31 will kick the SRAM2DRAM DMA.
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* Note that the sram2dram may be enabled only after configuring the DRAM and
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* SRAM addresses registers and the byte count register.
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* Bits 25:24: Defines the interrupt target upon dram2sram transfer done. When
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* set to 1 - interrupt is sent to the driver
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* Bit 0: Indicates the snoop configuration
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*/
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#define TFH_SRV_DMA_CHNL0_CTRL (0x1F60)
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#define TFH_SRV_DMA_SNOOP BIT(0)
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#define TFH_SRV_DMA_TO_DRIVER BIT(24)
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#define TFH_SRV_DMA_START BIT(31)
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/* Defines the DMA SRAM write start address to transfer a data block */
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#define TFH_SRV_DMA_CHNL0_SRAM_ADDR (0x1F64)
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/* Defines the 64bits DRAM start address to read the DMA data block from */
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#define TFH_SRV_DMA_CHNL0_DRAM_ADDR (0x1F68)
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/*
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* Defines the number of bytes to transfer from DRAM to SRAM.
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* Note that this register may be configured with non-dword aligned size.
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*/
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#define TFH_SRV_DMA_CHNL0_BC (0x1F70)
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/**
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* Rx SRAM Control and Status Registers (RSCSR)
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*
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* These registers provide handshake between driver and device for the Rx queue
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* (this queue handles *all* command responses, notifications, Rx data, etc.
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* sent from uCode to host driver). Unlike Tx, there is only one Rx
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* queue, and only one Rx DMA/FIFO channel. Also unlike Tx, which can
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* concatenate up to 20 DRAM buffers to form a Tx frame, each Receive Buffer
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* Descriptor (RBD) points to only one Rx Buffer (RB); there is a 1:1
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* mapping between RBDs and RBs.
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*
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* Driver must allocate host DRAM memory for the following, and set the
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* physical address of each into device registers:
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*
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* 1) Receive Buffer Descriptor (RBD) circular buffer (CB), typically with 256
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* entries (although any power of 2, up to 4096, is selectable by driver).
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* Each entry (1 dword) points to a receive buffer (RB) of consistent size
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* (typically 4K, although 8K or 16K are also selectable by driver).
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* Driver sets up RB size and number of RBDs in the CB via Rx config
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* register FH_MEM_RCSR_CHNL0_CONFIG_REG.
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*
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* Bit fields within one RBD:
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* 27-0: Receive Buffer physical address bits [35:8], 256-byte aligned
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*
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* Driver sets physical address [35:8] of base of RBD circular buffer
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* into FH_RSCSR_CHNL0_RBDCB_BASE_REG [27:0].
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*
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* 2) Rx status buffer, 8 bytes, in which uCode indicates which Rx Buffers
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* (RBs) have been filled, via a "write pointer", actually the index of
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* the RB's corresponding RBD within the circular buffer. Driver sets
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* physical address [35:4] into FH_RSCSR_CHNL0_STTS_WPTR_REG [31:0].
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*
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* Bit fields in lower dword of Rx status buffer (upper dword not used
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* by driver:
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* 31-12: Not used by driver
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* 11- 0: Index of last filled Rx buffer descriptor
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* (device writes, driver reads this value)
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*
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* As the driver prepares Receive Buffers (RBs) for device to fill, driver must
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* enter pointers to these RBs into contiguous RBD circular buffer entries,
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* and update the device's "write" index register,
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* FH_RSCSR_CHNL0_RBDCB_WPTR_REG.
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*
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* This "write" index corresponds to the *next* RBD that the driver will make
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* available, i.e. one RBD past the tail of the ready-to-fill RBDs within
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* the circular buffer. This value should initially be 0 (before preparing any
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* RBs), should be 8 after preparing the first 8 RBs (for example), and must
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* wrap back to 0 at the end of the circular buffer (but don't wrap before
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* "read" index has advanced past 1! See below).
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* NOTE: DEVICE EXPECTS THE WRITE INDEX TO BE INCREMENTED IN MULTIPLES OF 8.
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*
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* As the device fills RBs (referenced from contiguous RBDs within the circular
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* buffer), it updates the Rx status buffer in host DRAM, 2) described above,
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* to tell the driver the index of the latest filled RBD. The driver must
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* read this "read" index from DRAM after receiving an Rx interrupt from device
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*
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* The driver must also internally keep track of a third index, which is the
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* next RBD to process. When receiving an Rx interrupt, driver should process
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* all filled but unprocessed RBs up to, but not including, the RB
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* corresponding to the "read" index. For example, if "read" index becomes "1",
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* driver may process the RB pointed to by RBD 0. Depending on volume of
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* traffic, there may be many RBs to process.
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*
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* If read index == write index, device thinks there is no room to put new data.
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* Due to this, the maximum number of filled RBs is 255, instead of 256. To
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* be safe, make sure that there is a gap of at least 2 RBDs between "write"
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* and "read" indexes; that is, make sure that there are no more than 254
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* buffers waiting to be filled.
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*/
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#define FH_MEM_RSCSR_LOWER_BOUND (FH_MEM_LOWER_BOUND + 0xBC0)
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#define FH_MEM_RSCSR_UPPER_BOUND (FH_MEM_LOWER_BOUND + 0xC00)
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#define FH_MEM_RSCSR_CHNL0 (FH_MEM_RSCSR_LOWER_BOUND)
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/**
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* Physical base address of 8-byte Rx Status buffer.
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* Bit fields:
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* 31-0: Rx status buffer physical base address [35:4], must 16-byte aligned.
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*/
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#define FH_RSCSR_CHNL0_STTS_WPTR_REG (FH_MEM_RSCSR_CHNL0)
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/**
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* Physical base address of Rx Buffer Descriptor Circular Buffer.
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* Bit fields:
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* 27-0: RBD CD physical base address [35:8], must be 256-byte aligned.
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*/
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#define FH_RSCSR_CHNL0_RBDCB_BASE_REG (FH_MEM_RSCSR_CHNL0 + 0x004)
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/**
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* Rx write pointer (index, really!).
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* Bit fields:
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* 11-0: Index of driver's most recent prepared-to-be-filled RBD, + 1.
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* NOTE: For 256-entry circular buffer, use only bits [7:0].
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*/
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#define FH_RSCSR_CHNL0_RBDCB_WPTR_REG (FH_MEM_RSCSR_CHNL0 + 0x008)
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#define FH_RSCSR_CHNL0_WPTR (FH_RSCSR_CHNL0_RBDCB_WPTR_REG)
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#define FW_RSCSR_CHNL0_RXDCB_RDPTR_REG (FH_MEM_RSCSR_CHNL0 + 0x00c)
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#define FH_RSCSR_CHNL0_RDPTR FW_RSCSR_CHNL0_RXDCB_RDPTR_REG
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/**
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* Rx Config/Status Registers (RCSR)
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* Rx Config Reg for channel 0 (only channel used)
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*
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* Driver must initialize FH_MEM_RCSR_CHNL0_CONFIG_REG as follows for
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* normal operation (see bit fields).
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*
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* Clearing FH_MEM_RCSR_CHNL0_CONFIG_REG to 0 turns off Rx DMA.
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* Driver should poll FH_MEM_RSSR_RX_STATUS_REG for
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* FH_RSSR_CHNL0_RX_STATUS_CHNL_IDLE (bit 24) before continuing.
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*
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* Bit fields:
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* 31-30: Rx DMA channel enable: '00' off/pause, '01' pause at end of frame,
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* '10' operate normally
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* 29-24: reserved
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* 23-20: # RBDs in circular buffer = 2^value; use "8" for 256 RBDs (normal),
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* min "5" for 32 RBDs, max "12" for 4096 RBDs.
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* 19-18: reserved
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* 17-16: size of each receive buffer; '00' 4K (normal), '01' 8K,
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* '10' 12K, '11' 16K.
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* 15-14: reserved
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* 13-12: IRQ destination; '00' none, '01' host driver (normal operation)
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* 11- 4: timeout for closing Rx buffer and interrupting host (units 32 usec)
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* typical value 0x10 (about 1/2 msec)
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* 3- 0: reserved
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*/
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#define FH_MEM_RCSR_LOWER_BOUND (FH_MEM_LOWER_BOUND + 0xC00)
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#define FH_MEM_RCSR_UPPER_BOUND (FH_MEM_LOWER_BOUND + 0xCC0)
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#define FH_MEM_RCSR_CHNL0 (FH_MEM_RCSR_LOWER_BOUND)
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#define FH_MEM_RCSR_CHNL0_CONFIG_REG (FH_MEM_RCSR_CHNL0)
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#define FH_MEM_RCSR_CHNL0_RBDCB_WPTR (FH_MEM_RCSR_CHNL0 + 0x8)
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#define FH_MEM_RCSR_CHNL0_FLUSH_RB_REQ (FH_MEM_RCSR_CHNL0 + 0x10)
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#define FH_RCSR_CHNL0_RX_CONFIG_RB_TIMEOUT_MSK (0x00000FF0) /* bits 4-11 */
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#define FH_RCSR_CHNL0_RX_CONFIG_IRQ_DEST_MSK (0x00001000) /* bits 12 */
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#define FH_RCSR_CHNL0_RX_CONFIG_SINGLE_FRAME_MSK (0x00008000) /* bit 15 */
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#define FH_RCSR_CHNL0_RX_CONFIG_RB_SIZE_MSK (0x00030000) /* bits 16-17 */
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#define FH_RCSR_CHNL0_RX_CONFIG_RBDBC_SIZE_MSK (0x00F00000) /* bits 20-23 */
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#define FH_RCSR_CHNL0_RX_CONFIG_DMA_CHNL_EN_MSK (0xC0000000) /* bits 30-31*/
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#define FH_RCSR_RX_CONFIG_RBDCB_SIZE_POS (20)
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#define FH_RCSR_RX_CONFIG_REG_IRQ_RBTH_POS (4)
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#define RX_RB_TIMEOUT (0x11)
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#define FH_RCSR_RX_CONFIG_CHNL_EN_PAUSE_VAL (0x00000000)
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#define FH_RCSR_RX_CONFIG_CHNL_EN_PAUSE_EOF_VAL (0x40000000)
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#define FH_RCSR_RX_CONFIG_CHNL_EN_ENABLE_VAL (0x80000000)
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#define FH_RCSR_RX_CONFIG_REG_VAL_RB_SIZE_4K (0x00000000)
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#define FH_RCSR_RX_CONFIG_REG_VAL_RB_SIZE_8K (0x00010000)
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#define FH_RCSR_RX_CONFIG_REG_VAL_RB_SIZE_12K (0x00020000)
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#define FH_RCSR_RX_CONFIG_REG_VAL_RB_SIZE_16K (0x00030000)
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#define FH_RCSR_CHNL0_RX_IGNORE_RXF_EMPTY (0x00000004)
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#define FH_RCSR_CHNL0_RX_CONFIG_IRQ_DEST_NO_INT_VAL (0x00000000)
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#define FH_RCSR_CHNL0_RX_CONFIG_IRQ_DEST_INT_HOST_VAL (0x00001000)
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/**
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* Rx Shared Status Registers (RSSR)
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*
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* After stopping Rx DMA channel (writing 0 to
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* FH_MEM_RCSR_CHNL0_CONFIG_REG), driver must poll
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* FH_MEM_RSSR_RX_STATUS_REG until Rx channel is idle.
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*
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* Bit fields:
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* 24: 1 = Channel 0 is idle
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*
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* FH_MEM_RSSR_SHARED_CTRL_REG and FH_MEM_RSSR_RX_ENABLE_ERR_IRQ2DRV
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* contain default values that should not be altered by the driver.
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*/
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#define FH_MEM_RSSR_LOWER_BOUND (FH_MEM_LOWER_BOUND + 0xC40)
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#define FH_MEM_RSSR_UPPER_BOUND (FH_MEM_LOWER_BOUND + 0xD00)
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#define FH_MEM_RSSR_SHARED_CTRL_REG (FH_MEM_RSSR_LOWER_BOUND)
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#define FH_MEM_RSSR_RX_STATUS_REG (FH_MEM_RSSR_LOWER_BOUND + 0x004)
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#define FH_MEM_RSSR_RX_ENABLE_ERR_IRQ2DRV\
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(FH_MEM_RSSR_LOWER_BOUND + 0x008)
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#define FH_RSSR_CHNL0_RX_STATUS_CHNL_IDLE (0x01000000)
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#define FH_MEM_TFDIB_REG1_ADDR_BITSHIFT 28
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#define FH_MEM_TB_MAX_LENGTH (0x00020000)
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/* 9000 rx series registers */
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|
|
#define RFH_Q0_FRBDCB_BA_LSB 0xA08000 /* 64 bit address */
|
|
#define RFH_Q_FRBDCB_BA_LSB(q) (RFH_Q0_FRBDCB_BA_LSB + (q) * 8)
|
|
/* Write index table */
|
|
#define RFH_Q0_FRBDCB_WIDX 0xA08080
|
|
#define RFH_Q_FRBDCB_WIDX(q) (RFH_Q0_FRBDCB_WIDX + (q) * 4)
|
|
/* Write index table - shadow registers */
|
|
#define RFH_Q0_FRBDCB_WIDX_TRG 0x1C80
|
|
#define RFH_Q_FRBDCB_WIDX_TRG(q) (RFH_Q0_FRBDCB_WIDX_TRG + (q) * 4)
|
|
/* Read index table */
|
|
#define RFH_Q0_FRBDCB_RIDX 0xA080C0
|
|
#define RFH_Q_FRBDCB_RIDX(q) (RFH_Q0_FRBDCB_RIDX + (q) * 4)
|
|
/* Used list table */
|
|
#define RFH_Q0_URBDCB_BA_LSB 0xA08100 /* 64 bit address */
|
|
#define RFH_Q_URBDCB_BA_LSB(q) (RFH_Q0_URBDCB_BA_LSB + (q) * 8)
|
|
/* Write index table */
|
|
#define RFH_Q0_URBDCB_WIDX 0xA08180
|
|
#define RFH_Q_URBDCB_WIDX(q) (RFH_Q0_URBDCB_WIDX + (q) * 4)
|
|
#define RFH_Q0_URBDCB_VAID 0xA081C0
|
|
#define RFH_Q_URBDCB_VAID(q) (RFH_Q0_URBDCB_VAID + (q) * 4)
|
|
/* stts */
|
|
#define RFH_Q0_URBD_STTS_WPTR_LSB 0xA08200 /*64 bits address */
|
|
#define RFH_Q_URBD_STTS_WPTR_LSB(q) (RFH_Q0_URBD_STTS_WPTR_LSB + (q) * 8)
|
|
|
|
#define RFH_Q0_ORB_WPTR_LSB 0xA08280
|
|
#define RFH_Q_ORB_WPTR_LSB(q) (RFH_Q0_ORB_WPTR_LSB + (q) * 8)
|
|
#define RFH_RBDBUF_RBD0_LSB 0xA08300
|
|
#define RFH_RBDBUF_RBD_LSB(q) (RFH_RBDBUF_RBD0_LSB + (q) * 8)
|
|
|
|
/**
|
|
* RFH Status Register
|
|
*
|
|
* Bit fields:
|
|
*
|
|
* Bit 29: RBD_FETCH_IDLE
|
|
* This status flag is set by the RFH when there is no active RBD fetch from
|
|
* DRAM.
|
|
* Once the RFH RBD controller starts fetching (or when there is a pending
|
|
* RBD read response from DRAM), this flag is immediately turned off.
|
|
*
|
|
* Bit 30: SRAM_DMA_IDLE
|
|
* This status flag is set by the RFH when there is no active transaction from
|
|
* SRAM to DRAM.
|
|
* Once the SRAM to DRAM DMA is active, this flag is immediately turned off.
|
|
*
|
|
* Bit 31: RXF_DMA_IDLE
|
|
* This status flag is set by the RFH when there is no active transaction from
|
|
* RXF to DRAM.
|
|
* Once the RXF-to-DRAM DMA is active, this flag is immediately turned off.
|
|
*/
|
|
#define RFH_GEN_STATUS 0xA09808
|
|
#define RBD_FETCH_IDLE BIT(29)
|
|
#define SRAM_DMA_IDLE BIT(30)
|
|
#define RXF_DMA_IDLE BIT(31)
|
|
|
|
/* DMA configuration */
|
|
#define RFH_RXF_DMA_CFG 0xA09820
|
|
/* RB size */
|
|
#define RFH_RXF_DMA_RB_SIZE_MASK (0x000F0000) /* bits 16-19 */
|
|
#define RFH_RXF_DMA_RB_SIZE_POS 16
|
|
#define RFH_RXF_DMA_RB_SIZE_1K (0x1 << RFH_RXF_DMA_RB_SIZE_POS)
|
|
#define RFH_RXF_DMA_RB_SIZE_2K (0x2 << RFH_RXF_DMA_RB_SIZE_POS)
|
|
#define RFH_RXF_DMA_RB_SIZE_4K (0x4 << RFH_RXF_DMA_RB_SIZE_POS)
|
|
#define RFH_RXF_DMA_RB_SIZE_8K (0x8 << RFH_RXF_DMA_RB_SIZE_POS)
|
|
#define RFH_RXF_DMA_RB_SIZE_12K (0x9 << RFH_RXF_DMA_RB_SIZE_POS)
|
|
#define RFH_RXF_DMA_RB_SIZE_16K (0xA << RFH_RXF_DMA_RB_SIZE_POS)
|
|
#define RFH_RXF_DMA_RB_SIZE_20K (0xB << RFH_RXF_DMA_RB_SIZE_POS)
|
|
#define RFH_RXF_DMA_RB_SIZE_24K (0xC << RFH_RXF_DMA_RB_SIZE_POS)
|
|
#define RFH_RXF_DMA_RB_SIZE_28K (0xD << RFH_RXF_DMA_RB_SIZE_POS)
|
|
#define RFH_RXF_DMA_RB_SIZE_32K (0xE << RFH_RXF_DMA_RB_SIZE_POS)
|
|
/* RB Circular Buffer size:defines the table sizes in RBD units */
|
|
#define RFH_RXF_DMA_RBDCB_SIZE_MASK (0x00F00000) /* bits 20-23 */
|
|
#define RFH_RXF_DMA_RBDCB_SIZE_POS 20
|
|
#define RFH_RXF_DMA_RBDCB_SIZE_8 (0x3 << RFH_RXF_DMA_RBDCB_SIZE_POS)
|
|
#define RFH_RXF_DMA_RBDCB_SIZE_16 (0x4 << RFH_RXF_DMA_RBDCB_SIZE_POS)
|
|
#define RFH_RXF_DMA_RBDCB_SIZE_32 (0x5 << RFH_RXF_DMA_RBDCB_SIZE_POS)
|
|
#define RFH_RXF_DMA_RBDCB_SIZE_64 (0x7 << RFH_RXF_DMA_RBDCB_SIZE_POS)
|
|
#define RFH_RXF_DMA_RBDCB_SIZE_128 (0x7 << RFH_RXF_DMA_RBDCB_SIZE_POS)
|
|
#define RFH_RXF_DMA_RBDCB_SIZE_256 (0x8 << RFH_RXF_DMA_RBDCB_SIZE_POS)
|
|
#define RFH_RXF_DMA_RBDCB_SIZE_512 (0x9 << RFH_RXF_DMA_RBDCB_SIZE_POS)
|
|
#define RFH_RXF_DMA_RBDCB_SIZE_1024 (0xA << RFH_RXF_DMA_RBDCB_SIZE_POS)
|
|
#define RFH_RXF_DMA_RBDCB_SIZE_2048 (0xB << RFH_RXF_DMA_RBDCB_SIZE_POS)
|
|
#define RFH_RXF_DMA_MIN_RB_SIZE_MASK (0x03000000) /* bit 24-25 */
|
|
#define RFH_RXF_DMA_MIN_RB_SIZE_POS 24
|
|
#define RFH_RXF_DMA_MIN_RB_4_8 (3 << RFH_RXF_DMA_MIN_RB_SIZE_POS)
|
|
#define RFH_RXF_DMA_DROP_TOO_LARGE_MASK (0x04000000) /* bit 26 */
|
|
#define RFH_RXF_DMA_SINGLE_FRAME_MASK (0x20000000) /* bit 29 */
|
|
#define RFH_DMA_EN_MASK (0xC0000000) /* bits 30-31*/
|
|
#define RFH_DMA_EN_ENABLE_VAL BIT(31)
|
|
|
|
#define RFH_RXF_RXQ_ACTIVE 0xA0980C
|
|
|
|
#define RFH_GEN_CFG 0xA09800
|
|
#define RFH_GEN_CFG_SERVICE_DMA_SNOOP BIT(0)
|
|
#define RFH_GEN_CFG_RFH_DMA_SNOOP BIT(1)
|
|
#define RFH_GEN_CFG_RB_CHUNK_SIZE_POS 4
|
|
#define RFH_GEN_CFG_RB_CHUNK_SIZE_128 1
|
|
#define RFH_GEN_CFG_RB_CHUNK_SIZE_64 0
|
|
#define RFH_GEN_CFG_DEFAULT_RXQ_NUM_MASK 0xF00
|
|
#define RFH_GEN_CFG_DEFAULT_RXQ_NUM_POS 8
|
|
|
|
#define DEFAULT_RXQ_NUM 0
|
|
|
|
/* end of 9000 rx series registers */
|
|
|
|
/* TFDB Area - TFDs buffer table */
|
|
#define FH_MEM_TFDIB_DRAM_ADDR_LSB_MSK (0xFFFFFFFF)
|
|
#define FH_TFDIB_LOWER_BOUND (FH_MEM_LOWER_BOUND + 0x900)
|
|
#define FH_TFDIB_UPPER_BOUND (FH_MEM_LOWER_BOUND + 0x958)
|
|
#define FH_TFDIB_CTRL0_REG(_chnl) (FH_TFDIB_LOWER_BOUND + 0x8 * (_chnl))
|
|
#define FH_TFDIB_CTRL1_REG(_chnl) (FH_TFDIB_LOWER_BOUND + 0x8 * (_chnl) + 0x4)
|
|
|
|
/**
|
|
* Transmit DMA Channel Control/Status Registers (TCSR)
|
|
*
|
|
* Device has one configuration register for each of 8 Tx DMA/FIFO channels
|
|
* supported in hardware (don't confuse these with the 16 Tx queues in DRAM,
|
|
* which feed the DMA/FIFO channels); config regs are separated by 0x20 bytes.
|
|
*
|
|
* To use a Tx DMA channel, driver must initialize its
|
|
* FH_TCSR_CHNL_TX_CONFIG_REG(chnl) with:
|
|
*
|
|
* FH_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_ENABLE |
|
|
* FH_TCSR_TX_CONFIG_REG_VAL_DMA_CREDIT_ENABLE_VAL
|
|
*
|
|
* All other bits should be 0.
|
|
*
|
|
* Bit fields:
|
|
* 31-30: Tx DMA channel enable: '00' off/pause, '01' pause at end of frame,
|
|
* '10' operate normally
|
|
* 29- 4: Reserved, set to "0"
|
|
* 3: Enable internal DMA requests (1, normal operation), disable (0)
|
|
* 2- 0: Reserved, set to "0"
|
|
*/
|
|
#define FH_TCSR_LOWER_BOUND (FH_MEM_LOWER_BOUND + 0xD00)
|
|
#define FH_TCSR_UPPER_BOUND (FH_MEM_LOWER_BOUND + 0xE60)
|
|
|
|
/* Find Control/Status reg for given Tx DMA/FIFO channel */
|
|
#define FH_TCSR_CHNL_NUM (8)
|
|
|
|
/* TCSR: tx_config register values */
|
|
#define FH_TCSR_CHNL_TX_CONFIG_REG(_chnl) \
|
|
(FH_TCSR_LOWER_BOUND + 0x20 * (_chnl))
|
|
#define FH_TCSR_CHNL_TX_CREDIT_REG(_chnl) \
|
|
(FH_TCSR_LOWER_BOUND + 0x20 * (_chnl) + 0x4)
|
|
#define FH_TCSR_CHNL_TX_BUF_STS_REG(_chnl) \
|
|
(FH_TCSR_LOWER_BOUND + 0x20 * (_chnl) + 0x8)
|
|
|
|
#define FH_TCSR_TX_CONFIG_REG_VAL_MSG_MODE_TXF (0x00000000)
|
|
#define FH_TCSR_TX_CONFIG_REG_VAL_MSG_MODE_DRV (0x00000001)
|
|
|
|
#define FH_TCSR_TX_CONFIG_REG_VAL_DMA_CREDIT_DISABLE (0x00000000)
|
|
#define FH_TCSR_TX_CONFIG_REG_VAL_DMA_CREDIT_ENABLE (0x00000008)
|
|
|
|
#define FH_TCSR_TX_CONFIG_REG_VAL_CIRQ_HOST_NOINT (0x00000000)
|
|
#define FH_TCSR_TX_CONFIG_REG_VAL_CIRQ_HOST_ENDTFD (0x00100000)
|
|
#define FH_TCSR_TX_CONFIG_REG_VAL_CIRQ_HOST_IFTFD (0x00200000)
|
|
|
|
#define FH_TCSR_TX_CONFIG_REG_VAL_CIRQ_RTC_NOINT (0x00000000)
|
|
#define FH_TCSR_TX_CONFIG_REG_VAL_CIRQ_RTC_ENDTFD (0x00400000)
|
|
#define FH_TCSR_TX_CONFIG_REG_VAL_CIRQ_RTC_IFTFD (0x00800000)
|
|
|
|
#define FH_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_PAUSE (0x00000000)
|
|
#define FH_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_PAUSE_EOF (0x40000000)
|
|
#define FH_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_ENABLE (0x80000000)
|
|
|
|
#define FH_TCSR_CHNL_TX_BUF_STS_REG_VAL_TFDB_EMPTY (0x00000000)
|
|
#define FH_TCSR_CHNL_TX_BUF_STS_REG_VAL_TFDB_WAIT (0x00002000)
|
|
#define FH_TCSR_CHNL_TX_BUF_STS_REG_VAL_TFDB_VALID (0x00000003)
|
|
|
|
#define FH_TCSR_CHNL_TX_BUF_STS_REG_POS_TB_NUM (20)
|
|
#define FH_TCSR_CHNL_TX_BUF_STS_REG_POS_TB_IDX (12)
|
|
|
|
/**
|
|
* Tx Shared Status Registers (TSSR)
|
|
*
|
|
* After stopping Tx DMA channel (writing 0 to
|
|
* FH_TCSR_CHNL_TX_CONFIG_REG(chnl)), driver must poll
|
|
* FH_TSSR_TX_STATUS_REG until selected Tx channel is idle
|
|
* (channel's buffers empty | no pending requests).
|
|
*
|
|
* Bit fields:
|
|
* 31-24: 1 = Channel buffers empty (channel 7:0)
|
|
* 23-16: 1 = No pending requests (channel 7:0)
|
|
*/
|
|
#define FH_TSSR_LOWER_BOUND (FH_MEM_LOWER_BOUND + 0xEA0)
|
|
#define FH_TSSR_UPPER_BOUND (FH_MEM_LOWER_BOUND + 0xEC0)
|
|
|
|
#define FH_TSSR_TX_STATUS_REG (FH_TSSR_LOWER_BOUND + 0x010)
|
|
|
|
/**
|
|
* Bit fields for TSSR(Tx Shared Status & Control) error status register:
|
|
* 31: Indicates an address error when accessed to internal memory
|
|
* uCode/driver must write "1" in order to clear this flag
|
|
* 30: Indicates that Host did not send the expected number of dwords to FH
|
|
* uCode/driver must write "1" in order to clear this flag
|
|
* 16-9:Each status bit is for one channel. Indicates that an (Error) ActDMA
|
|
* command was received from the scheduler while the TRB was already full
|
|
* with previous command
|
|
* uCode/driver must write "1" in order to clear this flag
|
|
* 7-0: Each status bit indicates a channel's TxCredit error. When an error
|
|
* bit is set, it indicates that the FH has received a full indication
|
|
* from the RTC TxFIFO and the current value of the TxCredit counter was
|
|
* not equal to zero. This mean that the credit mechanism was not
|
|
* synchronized to the TxFIFO status
|
|
* uCode/driver must write "1" in order to clear this flag
|
|
*/
|
|
#define FH_TSSR_TX_ERROR_REG (FH_TSSR_LOWER_BOUND + 0x018)
|
|
#define FH_TSSR_TX_MSG_CONFIG_REG (FH_TSSR_LOWER_BOUND + 0x008)
|
|
|
|
#define FH_TSSR_TX_STATUS_REG_MSK_CHNL_IDLE(_chnl) ((1 << (_chnl)) << 16)
|
|
|
|
/* Tx service channels */
|
|
#define FH_SRVC_CHNL (9)
|
|
#define FH_SRVC_LOWER_BOUND (FH_MEM_LOWER_BOUND + 0x9C8)
|
|
#define FH_SRVC_UPPER_BOUND (FH_MEM_LOWER_BOUND + 0x9D0)
|
|
#define FH_SRVC_CHNL_SRAM_ADDR_REG(_chnl) \
|
|
(FH_SRVC_LOWER_BOUND + ((_chnl) - 9) * 0x4)
|
|
|
|
#define FH_TX_CHICKEN_BITS_REG (FH_MEM_LOWER_BOUND + 0xE98)
|
|
#define FH_TX_TRB_REG(_chan) (FH_MEM_LOWER_BOUND + 0x958 + (_chan) * 4)
|
|
|
|
/* Instruct FH to increment the retry count of a packet when
|
|
* it is brought from the memory to TX-FIFO
|
|
*/
|
|
#define FH_TX_CHICKEN_BITS_SCD_AUTO_RETRY_EN (0x00000002)
|
|
|
|
#define MQ_RX_TABLE_SIZE 512
|
|
#define MQ_RX_TABLE_MASK (MQ_RX_TABLE_SIZE - 1)
|
|
#define MQ_RX_NUM_RBDS (MQ_RX_TABLE_SIZE - 1)
|
|
#define RX_POOL_SIZE (MQ_RX_NUM_RBDS + \
|
|
IWL_MAX_RX_HW_QUEUES * \
|
|
(RX_CLAIM_REQ_ALLOC - RX_POST_REQ_ALLOC))
|
|
|
|
#define RX_QUEUE_SIZE 256
|
|
#define RX_QUEUE_MASK 255
|
|
#define RX_QUEUE_SIZE_LOG 8
|
|
|
|
/**
|
|
* struct iwl_rb_status - reserve buffer status
|
|
* host memory mapped FH registers
|
|
* @closed_rb_num [0:11] - Indicates the index of the RB which was closed
|
|
* @closed_fr_num [0:11] - Indicates the index of the RX Frame which was closed
|
|
* @finished_rb_num [0:11] - Indicates the index of the current RB
|
|
* in which the last frame was written to
|
|
* @finished_fr_num [0:11] - Indicates the index of the RX Frame
|
|
* which was transferred
|
|
*/
|
|
struct iwl_rb_status {
|
|
__le16 closed_rb_num;
|
|
__le16 closed_fr_num;
|
|
__le16 finished_rb_num;
|
|
__le16 finished_fr_nam;
|
|
__le32 __unused;
|
|
} __packed;
|
|
|
|
|
|
#define TFD_QUEUE_SIZE_MAX (256)
|
|
#define TFD_QUEUE_SIZE_BC_DUP (64)
|
|
#define TFD_QUEUE_BC_SIZE (TFD_QUEUE_SIZE_MAX + TFD_QUEUE_SIZE_BC_DUP)
|
|
#define IWL_TX_DMA_MASK DMA_BIT_MASK(36)
|
|
#define IWL_NUM_OF_TBS 20
|
|
#define IWL_TFH_NUM_TBS 25
|
|
|
|
static inline u8 iwl_get_dma_hi_addr(dma_addr_t addr)
|
|
{
|
|
return (sizeof(addr) > sizeof(u32) ? (addr >> 16) >> 16 : 0) & 0xF;
|
|
}
|
|
/**
|
|
* struct iwl_tfd_tb transmit buffer descriptor within transmit frame descriptor
|
|
*
|
|
* This structure contains dma address and length of transmission address
|
|
*
|
|
* @lo: low [31:0] portion of the dma address of TX buffer
|
|
* every even is unaligned on 16 bit boundary
|
|
* @hi_n_len 0-3 [35:32] portion of dma
|
|
* 4-15 length of the tx buffer
|
|
*/
|
|
struct iwl_tfd_tb {
|
|
__le32 lo;
|
|
__le16 hi_n_len;
|
|
} __packed;
|
|
|
|
/**
|
|
* struct iwl_tfh_tb transmit buffer descriptor within transmit frame descriptor
|
|
*
|
|
* This structure contains dma address and length of transmission address
|
|
*
|
|
* @tb_len length of the tx buffer
|
|
* @addr 64 bits dma address
|
|
*/
|
|
struct iwl_tfh_tb {
|
|
__le16 tb_len;
|
|
__le64 addr;
|
|
} __packed;
|
|
|
|
/**
|
|
* Each Tx queue uses a circular buffer of 256 TFDs stored in host DRAM.
|
|
* Both driver and device share these circular buffers, each of which must be
|
|
* contiguous 256 TFDs.
|
|
* For pre a000 HW it is 256 x 128 bytes-per-TFD = 32 KBytes
|
|
* For a000 HW and on it is 256 x 256 bytes-per-TFD = 65 KBytes
|
|
*
|
|
* Driver must indicate the physical address of the base of each
|
|
* circular buffer via the FH_MEM_CBBC_QUEUE registers.
|
|
*
|
|
* Each TFD contains pointer/size information for up to 20 / 25 data buffers
|
|
* in host DRAM. These buffers collectively contain the (one) frame described
|
|
* by the TFD. Each buffer must be a single contiguous block of memory within
|
|
* itself, but buffers may be scattered in host DRAM. Each buffer has max size
|
|
* of (4K - 4). The concatenates all of a TFD's buffers into a single
|
|
* Tx frame, up to 8 KBytes in size.
|
|
*
|
|
* A maximum of 255 (not 256!) TFDs may be on a queue waiting for Tx.
|
|
*/
|
|
|
|
/**
|
|
* struct iwl_tfd - Transmit Frame Descriptor (TFD)
|
|
* @ __reserved1[3] reserved
|
|
* @ num_tbs 0-4 number of active tbs
|
|
* 5 reserved
|
|
* 6-7 padding (not used)
|
|
* @ tbs[20] transmit frame buffer descriptors
|
|
* @ __pad padding
|
|
*/
|
|
struct iwl_tfd {
|
|
u8 __reserved1[3];
|
|
u8 num_tbs;
|
|
struct iwl_tfd_tb tbs[IWL_NUM_OF_TBS];
|
|
__le32 __pad;
|
|
} __packed;
|
|
|
|
/**
|
|
* struct iwl_tfh_tfd - Transmit Frame Descriptor (TFD)
|
|
* @ num_tbs 0-4 number of active tbs
|
|
* 5 -15 reserved
|
|
* @ tbs[25] transmit frame buffer descriptors
|
|
* @ __pad padding
|
|
*/
|
|
struct iwl_tfh_tfd {
|
|
__le16 num_tbs;
|
|
struct iwl_tfh_tb tbs[IWL_TFH_NUM_TBS];
|
|
__le32 __pad;
|
|
} __packed;
|
|
|
|
/* Keep Warm Size */
|
|
#define IWL_KW_SIZE 0x1000 /* 4k */
|
|
|
|
/* Fixed (non-configurable) rx data from phy */
|
|
|
|
/**
|
|
* struct iwlagn_schedq_bc_tbl scheduler byte count table
|
|
* base physical address provided by SCD_DRAM_BASE_ADDR
|
|
* For devices up to a000:
|
|
* @tfd_offset 0-12 - tx command byte count
|
|
* 12-16 - station index
|
|
* For a000 and on:
|
|
* @tfd_offset 0-12 - tx command byte count
|
|
* 12-13 - number of 64 byte chunks
|
|
* 14-16 - reserved
|
|
*/
|
|
struct iwlagn_scd_bc_tbl {
|
|
__le16 tfd_offset[TFD_QUEUE_BC_SIZE];
|
|
} __packed;
|
|
|
|
#endif /* !__iwl_fh_h__ */
|