Emmanuel Grumbach | c85eb61 | 2011-06-14 10:13:24 +0300 | [diff] [blame] | 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) 2007 - 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. |
| 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 | *****************************************************************************/ |
Emmanuel Grumbach | e6bb4c9 | 2011-08-25 23:10:48 -0700 | [diff] [blame] | 63 | #include <linux/interrupt.h> |
Emmanuel Grumbach | 87e5666 | 2011-08-25 23:10:50 -0700 | [diff] [blame] | 64 | #include <linux/debugfs.h> |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 65 | #include <linux/bitops.h> |
| 66 | #include <linux/gfp.h> |
Emmanuel Grumbach | e6bb4c9 | 2011-08-25 23:10:48 -0700 | [diff] [blame] | 67 | |
Emmanuel Grumbach | a0f6b0a | 2011-06-21 14:25:45 +0300 | [diff] [blame] | 68 | #include "iwl-dev.h" |
Emmanuel Grumbach | c85eb61 | 2011-06-14 10:13:24 +0300 | [diff] [blame] | 69 | #include "iwl-trans.h" |
Emmanuel Grumbach | 02aca58 | 2011-06-28 08:58:41 -0700 | [diff] [blame] | 70 | #include "iwl-core.h" |
| 71 | #include "iwl-helpers.h" |
Emmanuel Grumbach | ab697a9 | 2011-07-11 07:35:34 -0700 | [diff] [blame] | 72 | #include "iwl-trans-int-pcie.h" |
Emmanuel Grumbach | 02aca58 | 2011-06-28 08:58:41 -0700 | [diff] [blame] | 73 | /*TODO remove uneeded includes when the transport layer tx_free will be here */ |
| 74 | #include "iwl-agn.h" |
Emmanuel Grumbach | 48f20d3 | 2011-08-25 23:10:36 -0700 | [diff] [blame] | 75 | #include "iwl-shared.h" |
Emmanuel Grumbach | c85eb61 | 2011-06-14 10:13:24 +0300 | [diff] [blame] | 76 | |
Emmanuel Grumbach | 5a878bf | 2011-08-25 23:10:51 -0700 | [diff] [blame] | 77 | static int iwl_trans_rx_alloc(struct iwl_trans *trans) |
Emmanuel Grumbach | c85eb61 | 2011-06-14 10:13:24 +0300 | [diff] [blame] | 78 | { |
Emmanuel Grumbach | 5a878bf | 2011-08-25 23:10:51 -0700 | [diff] [blame] | 79 | struct iwl_trans_pcie *trans_pcie = |
| 80 | IWL_TRANS_GET_PCIE_TRANS(trans); |
| 81 | struct iwl_rx_queue *rxq = &trans_pcie->rxq; |
| 82 | struct device *dev = bus(trans)->dev; |
Emmanuel Grumbach | c85eb61 | 2011-06-14 10:13:24 +0300 | [diff] [blame] | 83 | |
Emmanuel Grumbach | 5a878bf | 2011-08-25 23:10:51 -0700 | [diff] [blame] | 84 | memset(&trans_pcie->rxq, 0, sizeof(trans_pcie->rxq)); |
Emmanuel Grumbach | c85eb61 | 2011-06-14 10:13:24 +0300 | [diff] [blame] | 85 | |
| 86 | spin_lock_init(&rxq->lock); |
| 87 | INIT_LIST_HEAD(&rxq->rx_free); |
| 88 | INIT_LIST_HEAD(&rxq->rx_used); |
| 89 | |
| 90 | if (WARN_ON(rxq->bd || rxq->rb_stts)) |
| 91 | return -EINVAL; |
| 92 | |
| 93 | /* Allocate the circular buffer of Read Buffer Descriptors (RBDs) */ |
Emmanuel Grumbach | a0f6b0a | 2011-06-21 14:25:45 +0300 | [diff] [blame] | 94 | rxq->bd = dma_alloc_coherent(dev, sizeof(__le32) * RX_QUEUE_SIZE, |
| 95 | &rxq->bd_dma, GFP_KERNEL); |
Emmanuel Grumbach | c85eb61 | 2011-06-14 10:13:24 +0300 | [diff] [blame] | 96 | if (!rxq->bd) |
| 97 | goto err_bd; |
Emmanuel Grumbach | a0f6b0a | 2011-06-21 14:25:45 +0300 | [diff] [blame] | 98 | memset(rxq->bd, 0, sizeof(__le32) * RX_QUEUE_SIZE); |
Emmanuel Grumbach | c85eb61 | 2011-06-14 10:13:24 +0300 | [diff] [blame] | 99 | |
| 100 | /*Allocate the driver's pointer to receive buffer status */ |
| 101 | rxq->rb_stts = dma_alloc_coherent(dev, sizeof(*rxq->rb_stts), |
| 102 | &rxq->rb_stts_dma, GFP_KERNEL); |
| 103 | if (!rxq->rb_stts) |
| 104 | goto err_rb_stts; |
| 105 | memset(rxq->rb_stts, 0, sizeof(*rxq->rb_stts)); |
| 106 | |
| 107 | return 0; |
| 108 | |
| 109 | err_rb_stts: |
Emmanuel Grumbach | a0f6b0a | 2011-06-21 14:25:45 +0300 | [diff] [blame] | 110 | dma_free_coherent(dev, sizeof(__le32) * RX_QUEUE_SIZE, |
| 111 | rxq->bd, rxq->bd_dma); |
Emmanuel Grumbach | c85eb61 | 2011-06-14 10:13:24 +0300 | [diff] [blame] | 112 | memset(&rxq->bd_dma, 0, sizeof(rxq->bd_dma)); |
| 113 | rxq->bd = NULL; |
| 114 | err_bd: |
| 115 | return -ENOMEM; |
| 116 | } |
| 117 | |
Emmanuel Grumbach | 5a878bf | 2011-08-25 23:10:51 -0700 | [diff] [blame] | 118 | static void iwl_trans_rxq_free_rx_bufs(struct iwl_trans *trans) |
Emmanuel Grumbach | a0f6b0a | 2011-06-21 14:25:45 +0300 | [diff] [blame] | 119 | { |
Emmanuel Grumbach | 5a878bf | 2011-08-25 23:10:51 -0700 | [diff] [blame] | 120 | struct iwl_trans_pcie *trans_pcie = |
| 121 | IWL_TRANS_GET_PCIE_TRANS(trans); |
| 122 | struct iwl_rx_queue *rxq = &trans_pcie->rxq; |
Emmanuel Grumbach | a0f6b0a | 2011-06-21 14:25:45 +0300 | [diff] [blame] | 123 | int i; |
| 124 | |
| 125 | /* Fill the rx_used queue with _all_ of the Rx buffers */ |
| 126 | for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) { |
| 127 | /* In the reset function, these buffers may have been allocated |
| 128 | * to an SKB, so we need to unmap and free potential storage */ |
| 129 | if (rxq->pool[i].page != NULL) { |
Emmanuel Grumbach | 5a878bf | 2011-08-25 23:10:51 -0700 | [diff] [blame] | 130 | dma_unmap_page(bus(trans)->dev, rxq->pool[i].page_dma, |
| 131 | PAGE_SIZE << hw_params(trans).rx_page_order, |
Emmanuel Grumbach | a0f6b0a | 2011-06-21 14:25:45 +0300 | [diff] [blame] | 132 | DMA_FROM_DEVICE); |
Emmanuel Grumbach | 790428b | 2011-08-25 23:11:05 -0700 | [diff] [blame] | 133 | __free_pages(rxq->pool[i].page, |
| 134 | hw_params(trans).rx_page_order); |
Emmanuel Grumbach | a0f6b0a | 2011-06-21 14:25:45 +0300 | [diff] [blame] | 135 | rxq->pool[i].page = NULL; |
| 136 | } |
| 137 | list_add_tail(&rxq->pool[i].list, &rxq->rx_used); |
| 138 | } |
| 139 | } |
| 140 | |
Emmanuel Grumbach | fd65693 | 2011-08-25 23:11:19 -0700 | [diff] [blame] | 141 | static void iwl_trans_rx_hw_init(struct iwl_trans *trans, |
Emmanuel Grumbach | ab697a9 | 2011-07-11 07:35:34 -0700 | [diff] [blame] | 142 | struct iwl_rx_queue *rxq) |
| 143 | { |
| 144 | u32 rb_size; |
| 145 | const u32 rfdnlog = RX_QUEUE_SIZE_LOG; /* 256 RBDs */ |
| 146 | u32 rb_timeout = 0; /* FIXME: RX_RB_TIMEOUT for all devices? */ |
| 147 | |
| 148 | rb_timeout = RX_RB_TIMEOUT; |
| 149 | |
| 150 | if (iwlagn_mod_params.amsdu_size_8K) |
| 151 | rb_size = FH_RCSR_RX_CONFIG_REG_VAL_RB_SIZE_8K; |
| 152 | else |
| 153 | rb_size = FH_RCSR_RX_CONFIG_REG_VAL_RB_SIZE_4K; |
| 154 | |
| 155 | /* Stop Rx DMA */ |
Emmanuel Grumbach | 83ed901 | 2011-08-25 23:11:14 -0700 | [diff] [blame] | 156 | iwl_write_direct32(bus(trans), FH_MEM_RCSR_CHNL0_CONFIG_REG, 0); |
Emmanuel Grumbach | ab697a9 | 2011-07-11 07:35:34 -0700 | [diff] [blame] | 157 | |
| 158 | /* Reset driver's Rx queue write index */ |
Emmanuel Grumbach | 83ed901 | 2011-08-25 23:11:14 -0700 | [diff] [blame] | 159 | iwl_write_direct32(bus(trans), FH_RSCSR_CHNL0_RBDCB_WPTR_REG, 0); |
Emmanuel Grumbach | ab697a9 | 2011-07-11 07:35:34 -0700 | [diff] [blame] | 160 | |
| 161 | /* Tell device where to find RBD circular buffer in DRAM */ |
Emmanuel Grumbach | 83ed901 | 2011-08-25 23:11:14 -0700 | [diff] [blame] | 162 | iwl_write_direct32(bus(trans), FH_RSCSR_CHNL0_RBDCB_BASE_REG, |
Emmanuel Grumbach | ab697a9 | 2011-07-11 07:35:34 -0700 | [diff] [blame] | 163 | (u32)(rxq->bd_dma >> 8)); |
| 164 | |
| 165 | /* Tell device where in DRAM to update its Rx status */ |
Emmanuel Grumbach | 83ed901 | 2011-08-25 23:11:14 -0700 | [diff] [blame] | 166 | iwl_write_direct32(bus(trans), FH_RSCSR_CHNL0_STTS_WPTR_REG, |
Emmanuel Grumbach | ab697a9 | 2011-07-11 07:35:34 -0700 | [diff] [blame] | 167 | rxq->rb_stts_dma >> 4); |
| 168 | |
| 169 | /* Enable Rx DMA |
| 170 | * FH_RCSR_CHNL0_RX_IGNORE_RXF_EMPTY is set because of HW bug in |
| 171 | * the credit mechanism in 5000 HW RX FIFO |
| 172 | * Direct rx interrupts to hosts |
| 173 | * Rx buffer size 4 or 8k |
| 174 | * RB timeout 0x10 |
| 175 | * 256 RBDs |
| 176 | */ |
Emmanuel Grumbach | 83ed901 | 2011-08-25 23:11:14 -0700 | [diff] [blame] | 177 | iwl_write_direct32(bus(trans), FH_MEM_RCSR_CHNL0_CONFIG_REG, |
Emmanuel Grumbach | ab697a9 | 2011-07-11 07:35:34 -0700 | [diff] [blame] | 178 | FH_RCSR_RX_CONFIG_CHNL_EN_ENABLE_VAL | |
| 179 | FH_RCSR_CHNL0_RX_IGNORE_RXF_EMPTY | |
| 180 | FH_RCSR_CHNL0_RX_CONFIG_IRQ_DEST_INT_HOST_VAL | |
| 181 | FH_RCSR_CHNL0_RX_CONFIG_SINGLE_FRAME_MSK | |
| 182 | rb_size| |
| 183 | (rb_timeout << FH_RCSR_RX_CONFIG_REG_IRQ_RBTH_POS)| |
| 184 | (rfdnlog << FH_RCSR_RX_CONFIG_RBDCB_SIZE_POS)); |
| 185 | |
| 186 | /* Set interrupt coalescing timer to default (2048 usecs) */ |
Emmanuel Grumbach | 83ed901 | 2011-08-25 23:11:14 -0700 | [diff] [blame] | 187 | iwl_write8(bus(trans), CSR_INT_COALESCING, IWL_HOST_INT_TIMEOUT_DEF); |
Emmanuel Grumbach | ab697a9 | 2011-07-11 07:35:34 -0700 | [diff] [blame] | 188 | } |
| 189 | |
Emmanuel Grumbach | 5a878bf | 2011-08-25 23:10:51 -0700 | [diff] [blame] | 190 | static int iwl_rx_init(struct iwl_trans *trans) |
Emmanuel Grumbach | c85eb61 | 2011-06-14 10:13:24 +0300 | [diff] [blame] | 191 | { |
Emmanuel Grumbach | 5a878bf | 2011-08-25 23:10:51 -0700 | [diff] [blame] | 192 | struct iwl_trans_pcie *trans_pcie = |
| 193 | IWL_TRANS_GET_PCIE_TRANS(trans); |
| 194 | struct iwl_rx_queue *rxq = &trans_pcie->rxq; |
| 195 | |
Emmanuel Grumbach | c85eb61 | 2011-06-14 10:13:24 +0300 | [diff] [blame] | 196 | int i, err; |
| 197 | unsigned long flags; |
| 198 | |
| 199 | if (!rxq->bd) { |
Emmanuel Grumbach | 5a878bf | 2011-08-25 23:10:51 -0700 | [diff] [blame] | 200 | err = iwl_trans_rx_alloc(trans); |
Emmanuel Grumbach | c85eb61 | 2011-06-14 10:13:24 +0300 | [diff] [blame] | 201 | if (err) |
| 202 | return err; |
| 203 | } |
| 204 | |
| 205 | spin_lock_irqsave(&rxq->lock, flags); |
| 206 | INIT_LIST_HEAD(&rxq->rx_free); |
| 207 | INIT_LIST_HEAD(&rxq->rx_used); |
| 208 | |
Emmanuel Grumbach | 5a878bf | 2011-08-25 23:10:51 -0700 | [diff] [blame] | 209 | iwl_trans_rxq_free_rx_bufs(trans); |
Emmanuel Grumbach | c85eb61 | 2011-06-14 10:13:24 +0300 | [diff] [blame] | 210 | |
| 211 | for (i = 0; i < RX_QUEUE_SIZE; i++) |
| 212 | rxq->queue[i] = NULL; |
| 213 | |
| 214 | /* Set us so that we have processed and used all buffers, but have |
| 215 | * not restocked the Rx queue with fresh buffers */ |
| 216 | rxq->read = rxq->write = 0; |
| 217 | rxq->write_actual = 0; |
| 218 | rxq->free_count = 0; |
| 219 | spin_unlock_irqrestore(&rxq->lock, flags); |
| 220 | |
Emmanuel Grumbach | 5a878bf | 2011-08-25 23:10:51 -0700 | [diff] [blame] | 221 | iwlagn_rx_replenish(trans); |
Emmanuel Grumbach | ab697a9 | 2011-07-11 07:35:34 -0700 | [diff] [blame] | 222 | |
Emmanuel Grumbach | fd65693 | 2011-08-25 23:11:19 -0700 | [diff] [blame] | 223 | iwl_trans_rx_hw_init(trans, rxq); |
Emmanuel Grumbach | ab697a9 | 2011-07-11 07:35:34 -0700 | [diff] [blame] | 224 | |
Emmanuel Grumbach | 5a878bf | 2011-08-25 23:10:51 -0700 | [diff] [blame] | 225 | spin_lock_irqsave(&trans->shrd->lock, flags); |
Emmanuel Grumbach | ab697a9 | 2011-07-11 07:35:34 -0700 | [diff] [blame] | 226 | rxq->need_update = 1; |
Emmanuel Grumbach | 5a878bf | 2011-08-25 23:10:51 -0700 | [diff] [blame] | 227 | iwl_rx_queue_update_write_ptr(trans, rxq); |
| 228 | spin_unlock_irqrestore(&trans->shrd->lock, flags); |
Emmanuel Grumbach | ab697a9 | 2011-07-11 07:35:34 -0700 | [diff] [blame] | 229 | |
Emmanuel Grumbach | c85eb61 | 2011-06-14 10:13:24 +0300 | [diff] [blame] | 230 | return 0; |
| 231 | } |
| 232 | |
Emmanuel Grumbach | 5a878bf | 2011-08-25 23:10:51 -0700 | [diff] [blame] | 233 | static void iwl_trans_pcie_rx_free(struct iwl_trans *trans) |
Emmanuel Grumbach | a0f6b0a | 2011-06-21 14:25:45 +0300 | [diff] [blame] | 234 | { |
Emmanuel Grumbach | 5a878bf | 2011-08-25 23:10:51 -0700 | [diff] [blame] | 235 | struct iwl_trans_pcie *trans_pcie = |
| 236 | IWL_TRANS_GET_PCIE_TRANS(trans); |
| 237 | struct iwl_rx_queue *rxq = &trans_pcie->rxq; |
| 238 | |
Emmanuel Grumbach | a0f6b0a | 2011-06-21 14:25:45 +0300 | [diff] [blame] | 239 | unsigned long flags; |
| 240 | |
| 241 | /*if rxq->bd is NULL, it means that nothing has been allocated, |
| 242 | * exit now */ |
| 243 | if (!rxq->bd) { |
Emmanuel Grumbach | 5a878bf | 2011-08-25 23:10:51 -0700 | [diff] [blame] | 244 | IWL_DEBUG_INFO(trans, "Free NULL rx context\n"); |
Emmanuel Grumbach | a0f6b0a | 2011-06-21 14:25:45 +0300 | [diff] [blame] | 245 | return; |
| 246 | } |
| 247 | |
| 248 | spin_lock_irqsave(&rxq->lock, flags); |
Emmanuel Grumbach | 5a878bf | 2011-08-25 23:10:51 -0700 | [diff] [blame] | 249 | iwl_trans_rxq_free_rx_bufs(trans); |
Emmanuel Grumbach | a0f6b0a | 2011-06-21 14:25:45 +0300 | [diff] [blame] | 250 | spin_unlock_irqrestore(&rxq->lock, flags); |
| 251 | |
Emmanuel Grumbach | 5a878bf | 2011-08-25 23:10:51 -0700 | [diff] [blame] | 252 | dma_free_coherent(bus(trans)->dev, sizeof(__le32) * RX_QUEUE_SIZE, |
Emmanuel Grumbach | a0f6b0a | 2011-06-21 14:25:45 +0300 | [diff] [blame] | 253 | rxq->bd, rxq->bd_dma); |
| 254 | memset(&rxq->bd_dma, 0, sizeof(rxq->bd_dma)); |
| 255 | rxq->bd = NULL; |
| 256 | |
| 257 | if (rxq->rb_stts) |
Emmanuel Grumbach | 5a878bf | 2011-08-25 23:10:51 -0700 | [diff] [blame] | 258 | dma_free_coherent(bus(trans)->dev, |
Emmanuel Grumbach | a0f6b0a | 2011-06-21 14:25:45 +0300 | [diff] [blame] | 259 | sizeof(struct iwl_rb_status), |
| 260 | rxq->rb_stts, rxq->rb_stts_dma); |
| 261 | else |
Emmanuel Grumbach | 5a878bf | 2011-08-25 23:10:51 -0700 | [diff] [blame] | 262 | IWL_DEBUG_INFO(trans, "Free rxq->rb_stts which is NULL\n"); |
Emmanuel Grumbach | a0f6b0a | 2011-06-21 14:25:45 +0300 | [diff] [blame] | 263 | memset(&rxq->rb_stts_dma, 0, sizeof(rxq->rb_stts_dma)); |
| 264 | rxq->rb_stts = NULL; |
| 265 | } |
| 266 | |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 267 | static int iwl_trans_rx_stop(struct iwl_trans *trans) |
Emmanuel Grumbach | c2c52e8 | 2011-07-08 08:46:11 -0700 | [diff] [blame] | 268 | { |
| 269 | |
| 270 | /* stop Rx DMA */ |
Emmanuel Grumbach | 83ed901 | 2011-08-25 23:11:14 -0700 | [diff] [blame] | 271 | iwl_write_direct32(bus(trans), FH_MEM_RCSR_CHNL0_CONFIG_REG, 0); |
| 272 | return iwl_poll_direct_bit(bus(trans), FH_MEM_RSSR_RX_STATUS_REG, |
Emmanuel Grumbach | c2c52e8 | 2011-07-08 08:46:11 -0700 | [diff] [blame] | 273 | FH_RSSR_CHNL0_RX_STATUS_CHNL_IDLE, 1000); |
| 274 | } |
| 275 | |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 276 | static inline int iwlagn_alloc_dma_ptr(struct iwl_trans *trans, |
Emmanuel Grumbach | 02aca58 | 2011-06-28 08:58:41 -0700 | [diff] [blame] | 277 | struct iwl_dma_ptr *ptr, size_t size) |
| 278 | { |
| 279 | if (WARN_ON(ptr->addr)) |
| 280 | return -EINVAL; |
| 281 | |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 282 | ptr->addr = dma_alloc_coherent(bus(trans)->dev, size, |
Emmanuel Grumbach | 02aca58 | 2011-06-28 08:58:41 -0700 | [diff] [blame] | 283 | &ptr->dma, GFP_KERNEL); |
| 284 | if (!ptr->addr) |
| 285 | return -ENOMEM; |
| 286 | ptr->size = size; |
| 287 | return 0; |
| 288 | } |
| 289 | |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 290 | static inline void iwlagn_free_dma_ptr(struct iwl_trans *trans, |
Emmanuel Grumbach | 1359ca4 | 2011-07-08 08:46:10 -0700 | [diff] [blame] | 291 | struct iwl_dma_ptr *ptr) |
| 292 | { |
| 293 | if (unlikely(!ptr->addr)) |
| 294 | return; |
| 295 | |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 296 | dma_free_coherent(bus(trans)->dev, ptr->size, ptr->addr, ptr->dma); |
Emmanuel Grumbach | 1359ca4 | 2011-07-08 08:46:10 -0700 | [diff] [blame] | 297 | memset(ptr, 0, sizeof(*ptr)); |
| 298 | } |
| 299 | |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 300 | static int iwl_trans_txq_alloc(struct iwl_trans *trans, |
| 301 | struct iwl_tx_queue *txq, int slots_num, |
| 302 | u32 txq_id) |
Emmanuel Grumbach | 02aca58 | 2011-06-28 08:58:41 -0700 | [diff] [blame] | 303 | { |
Emmanuel Grumbach | ab9e212 | 2011-08-25 23:11:10 -0700 | [diff] [blame] | 304 | size_t tfd_sz = sizeof(struct iwl_tfd) * TFD_QUEUE_SIZE_MAX; |
Emmanuel Grumbach | 02aca58 | 2011-06-28 08:58:41 -0700 | [diff] [blame] | 305 | int i; |
| 306 | |
Emmanuel Grumbach | 2c45229 | 2011-08-25 23:11:21 -0700 | [diff] [blame^] | 307 | if (WARN_ON(txq->meta || txq->cmd || txq->skbs || txq->tfds)) |
Emmanuel Grumbach | 02aca58 | 2011-06-28 08:58:41 -0700 | [diff] [blame] | 308 | return -EINVAL; |
| 309 | |
Emmanuel Grumbach | 1359ca4 | 2011-07-08 08:46:10 -0700 | [diff] [blame] | 310 | txq->q.n_window = slots_num; |
| 311 | |
Emmanuel Grumbach | 02aca58 | 2011-06-28 08:58:41 -0700 | [diff] [blame] | 312 | txq->meta = kzalloc(sizeof(txq->meta[0]) * slots_num, |
| 313 | GFP_KERNEL); |
| 314 | txq->cmd = kzalloc(sizeof(txq->cmd[0]) * slots_num, |
| 315 | GFP_KERNEL); |
| 316 | |
| 317 | if (!txq->meta || !txq->cmd) |
| 318 | goto error; |
| 319 | |
| 320 | for (i = 0; i < slots_num; i++) { |
| 321 | txq->cmd[i] = kmalloc(sizeof(struct iwl_device_cmd), |
| 322 | GFP_KERNEL); |
| 323 | if (!txq->cmd[i]) |
| 324 | goto error; |
| 325 | } |
| 326 | |
| 327 | /* Alloc driver data array and TFD circular buffer */ |
| 328 | /* Driver private data, only for Tx (not command) queues, |
| 329 | * not shared with device. */ |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 330 | if (txq_id != trans->shrd->cmd_queue) { |
Emmanuel Grumbach | 2c45229 | 2011-08-25 23:11:21 -0700 | [diff] [blame^] | 331 | txq->skbs = kzalloc(sizeof(txq->skbs[0]) * |
Emmanuel Grumbach | 02aca58 | 2011-06-28 08:58:41 -0700 | [diff] [blame] | 332 | TFD_QUEUE_SIZE_MAX, GFP_KERNEL); |
Emmanuel Grumbach | 2c45229 | 2011-08-25 23:11:21 -0700 | [diff] [blame^] | 333 | if (!txq->skbs) { |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 334 | IWL_ERR(trans, "kmalloc for auxiliary BD " |
Emmanuel Grumbach | 02aca58 | 2011-06-28 08:58:41 -0700 | [diff] [blame] | 335 | "structures failed\n"); |
| 336 | goto error; |
| 337 | } |
| 338 | } else { |
Emmanuel Grumbach | 2c45229 | 2011-08-25 23:11:21 -0700 | [diff] [blame^] | 339 | txq->skbs = NULL; |
Emmanuel Grumbach | 02aca58 | 2011-06-28 08:58:41 -0700 | [diff] [blame] | 340 | } |
| 341 | |
| 342 | /* Circular buffer of transmit frame descriptors (TFDs), |
| 343 | * shared with device */ |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 344 | txq->tfds = dma_alloc_coherent(bus(trans)->dev, tfd_sz, |
| 345 | &txq->q.dma_addr, GFP_KERNEL); |
Emmanuel Grumbach | 02aca58 | 2011-06-28 08:58:41 -0700 | [diff] [blame] | 346 | if (!txq->tfds) { |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 347 | IWL_ERR(trans, "dma_alloc_coherent(%zd) failed\n", tfd_sz); |
Emmanuel Grumbach | 02aca58 | 2011-06-28 08:58:41 -0700 | [diff] [blame] | 348 | goto error; |
| 349 | } |
| 350 | txq->q.id = txq_id; |
| 351 | |
| 352 | return 0; |
| 353 | error: |
Emmanuel Grumbach | 2c45229 | 2011-08-25 23:11:21 -0700 | [diff] [blame^] | 354 | kfree(txq->skbs); |
| 355 | txq->skbs = NULL; |
Emmanuel Grumbach | 02aca58 | 2011-06-28 08:58:41 -0700 | [diff] [blame] | 356 | /* since txq->cmd has been zeroed, |
| 357 | * all non allocated cmd[i] will be NULL */ |
| 358 | if (txq->cmd) |
| 359 | for (i = 0; i < slots_num; i++) |
| 360 | kfree(txq->cmd[i]); |
| 361 | kfree(txq->meta); |
| 362 | kfree(txq->cmd); |
| 363 | txq->meta = NULL; |
| 364 | txq->cmd = NULL; |
| 365 | |
| 366 | return -ENOMEM; |
| 367 | |
| 368 | } |
| 369 | |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 370 | static int iwl_trans_txq_init(struct iwl_trans *trans, struct iwl_tx_queue *txq, |
Emmanuel Grumbach | 02aca58 | 2011-06-28 08:58:41 -0700 | [diff] [blame] | 371 | int slots_num, u32 txq_id) |
| 372 | { |
| 373 | int ret; |
| 374 | |
| 375 | txq->need_update = 0; |
| 376 | memset(txq->meta, 0, sizeof(txq->meta[0]) * slots_num); |
| 377 | |
| 378 | /* |
| 379 | * For the default queues 0-3, set up the swq_id |
| 380 | * already -- all others need to get one later |
| 381 | * (if they need one at all). |
| 382 | */ |
| 383 | if (txq_id < 4) |
| 384 | iwl_set_swq_id(txq, txq_id, txq_id); |
| 385 | |
| 386 | /* TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise |
| 387 | * iwl_queue_inc_wrap and iwl_queue_dec_wrap are broken. */ |
| 388 | BUILD_BUG_ON(TFD_QUEUE_SIZE_MAX & (TFD_QUEUE_SIZE_MAX - 1)); |
| 389 | |
| 390 | /* Initialize queue's high/low-water marks, and head/tail indexes */ |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 391 | ret = iwl_queue_init(&txq->q, TFD_QUEUE_SIZE_MAX, slots_num, |
Emmanuel Grumbach | 02aca58 | 2011-06-28 08:58:41 -0700 | [diff] [blame] | 392 | txq_id); |
| 393 | if (ret) |
| 394 | return ret; |
| 395 | |
| 396 | /* |
| 397 | * Tell nic where to find circular buffer of Tx Frame Descriptors for |
| 398 | * given Tx queue, and enable the DMA channel used for that queue. |
| 399 | * Circular buffer (TFD queue in DRAM) physical base address */ |
Emmanuel Grumbach | 83ed901 | 2011-08-25 23:11:14 -0700 | [diff] [blame] | 400 | iwl_write_direct32(bus(trans), FH_MEM_CBBC_QUEUE(txq_id), |
Emmanuel Grumbach | 02aca58 | 2011-06-28 08:58:41 -0700 | [diff] [blame] | 401 | txq->q.dma_addr >> 8); |
| 402 | |
| 403 | return 0; |
| 404 | } |
| 405 | |
| 406 | /** |
Emmanuel Grumbach | c170b86 | 2011-07-08 08:46:12 -0700 | [diff] [blame] | 407 | * iwl_tx_queue_unmap - Unmap any remaining DMA mappings and free skb's |
| 408 | */ |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 409 | static void iwl_tx_queue_unmap(struct iwl_trans *trans, int txq_id) |
Emmanuel Grumbach | c170b86 | 2011-07-08 08:46:12 -0700 | [diff] [blame] | 410 | { |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 411 | struct iwl_priv *priv = priv(trans); |
Emmanuel Grumbach | c170b86 | 2011-07-08 08:46:12 -0700 | [diff] [blame] | 412 | struct iwl_tx_queue *txq = &priv->txq[txq_id]; |
| 413 | struct iwl_queue *q = &txq->q; |
| 414 | |
| 415 | if (!q->n_bd) |
| 416 | return; |
| 417 | |
| 418 | while (q->write_ptr != q->read_ptr) { |
| 419 | /* The read_ptr needs to bound by q->n_window */ |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 420 | iwlagn_txq_free_tfd(trans, txq, get_cmd_index(q, q->read_ptr)); |
Emmanuel Grumbach | c170b86 | 2011-07-08 08:46:12 -0700 | [diff] [blame] | 421 | q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd); |
| 422 | } |
| 423 | } |
| 424 | |
| 425 | /** |
Emmanuel Grumbach | 1359ca4 | 2011-07-08 08:46:10 -0700 | [diff] [blame] | 426 | * iwl_tx_queue_free - Deallocate DMA queue. |
| 427 | * @txq: Transmit queue to deallocate. |
| 428 | * |
| 429 | * Empty queue by removing and destroying all BD's. |
| 430 | * Free all buffers. |
| 431 | * 0-fill, but do not free "txq" descriptor structure. |
| 432 | */ |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 433 | static void iwl_tx_queue_free(struct iwl_trans *trans, int txq_id) |
Emmanuel Grumbach | 1359ca4 | 2011-07-08 08:46:10 -0700 | [diff] [blame] | 434 | { |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 435 | struct iwl_priv *priv = priv(trans); |
Emmanuel Grumbach | 1359ca4 | 2011-07-08 08:46:10 -0700 | [diff] [blame] | 436 | struct iwl_tx_queue *txq = &priv->txq[txq_id]; |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 437 | struct device *dev = bus(trans)->dev; |
Emmanuel Grumbach | 1359ca4 | 2011-07-08 08:46:10 -0700 | [diff] [blame] | 438 | int i; |
| 439 | if (WARN_ON(!txq)) |
| 440 | return; |
| 441 | |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 442 | iwl_tx_queue_unmap(trans, txq_id); |
Emmanuel Grumbach | 1359ca4 | 2011-07-08 08:46:10 -0700 | [diff] [blame] | 443 | |
| 444 | /* De-alloc array of command/tx buffers */ |
| 445 | for (i = 0; i < txq->q.n_window; i++) |
| 446 | kfree(txq->cmd[i]); |
| 447 | |
| 448 | /* De-alloc circular buffer of TFDs */ |
| 449 | if (txq->q.n_bd) { |
Emmanuel Grumbach | ab9e212 | 2011-08-25 23:11:10 -0700 | [diff] [blame] | 450 | dma_free_coherent(dev, sizeof(struct iwl_tfd) * |
Emmanuel Grumbach | 1359ca4 | 2011-07-08 08:46:10 -0700 | [diff] [blame] | 451 | txq->q.n_bd, txq->tfds, txq->q.dma_addr); |
| 452 | memset(&txq->q.dma_addr, 0, sizeof(txq->q.dma_addr)); |
| 453 | } |
| 454 | |
| 455 | /* De-alloc array of per-TFD driver data */ |
Emmanuel Grumbach | 2c45229 | 2011-08-25 23:11:21 -0700 | [diff] [blame^] | 456 | kfree(txq->skbs); |
| 457 | txq->skbs = NULL; |
Emmanuel Grumbach | 1359ca4 | 2011-07-08 08:46:10 -0700 | [diff] [blame] | 458 | |
| 459 | /* deallocate arrays */ |
| 460 | kfree(txq->cmd); |
| 461 | kfree(txq->meta); |
| 462 | txq->cmd = NULL; |
| 463 | txq->meta = NULL; |
| 464 | |
| 465 | /* 0-fill queue descriptor structure */ |
| 466 | memset(txq, 0, sizeof(*txq)); |
| 467 | } |
| 468 | |
| 469 | /** |
| 470 | * iwl_trans_tx_free - Free TXQ Context |
| 471 | * |
| 472 | * Destroy all TX DMA queues and structures |
| 473 | */ |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 474 | static void iwl_trans_pcie_tx_free(struct iwl_trans *trans) |
Emmanuel Grumbach | 1359ca4 | 2011-07-08 08:46:10 -0700 | [diff] [blame] | 475 | { |
| 476 | int txq_id; |
Emmanuel Grumbach | 105183b | 2011-08-25 23:11:02 -0700 | [diff] [blame] | 477 | struct iwl_trans_pcie *trans_pcie = |
| 478 | IWL_TRANS_GET_PCIE_TRANS(trans); |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 479 | struct iwl_priv *priv = priv(trans); |
Emmanuel Grumbach | 1359ca4 | 2011-07-08 08:46:10 -0700 | [diff] [blame] | 480 | |
| 481 | /* Tx queues */ |
| 482 | if (priv->txq) { |
Emmanuel Grumbach | d618912 | 2011-08-25 23:10:39 -0700 | [diff] [blame] | 483 | for (txq_id = 0; |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 484 | txq_id < hw_params(trans).max_txq_num; txq_id++) |
| 485 | iwl_tx_queue_free(trans, txq_id); |
Emmanuel Grumbach | 1359ca4 | 2011-07-08 08:46:10 -0700 | [diff] [blame] | 486 | } |
| 487 | |
| 488 | kfree(priv->txq); |
| 489 | priv->txq = NULL; |
| 490 | |
Emmanuel Grumbach | 9d6b2cb | 2011-08-25 23:11:12 -0700 | [diff] [blame] | 491 | iwlagn_free_dma_ptr(trans, &trans_pcie->kw); |
Emmanuel Grumbach | 1359ca4 | 2011-07-08 08:46:10 -0700 | [diff] [blame] | 492 | |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 493 | iwlagn_free_dma_ptr(trans, &trans_pcie->scd_bc_tbls); |
Emmanuel Grumbach | 1359ca4 | 2011-07-08 08:46:10 -0700 | [diff] [blame] | 494 | } |
| 495 | |
| 496 | /** |
Emmanuel Grumbach | 02aca58 | 2011-06-28 08:58:41 -0700 | [diff] [blame] | 497 | * iwl_trans_tx_alloc - allocate TX context |
| 498 | * Allocate all Tx DMA structures and initialize them |
| 499 | * |
| 500 | * @param priv |
| 501 | * @return error code |
| 502 | */ |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 503 | static int iwl_trans_tx_alloc(struct iwl_trans *trans) |
Emmanuel Grumbach | 02aca58 | 2011-06-28 08:58:41 -0700 | [diff] [blame] | 504 | { |
| 505 | int ret; |
| 506 | int txq_id, slots_num; |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 507 | struct iwl_priv *priv = priv(trans); |
Emmanuel Grumbach | 105183b | 2011-08-25 23:11:02 -0700 | [diff] [blame] | 508 | struct iwl_trans_pcie *trans_pcie = |
| 509 | IWL_TRANS_GET_PCIE_TRANS(trans); |
Emmanuel Grumbach | 02aca58 | 2011-06-28 08:58:41 -0700 | [diff] [blame] | 510 | |
Emmanuel Grumbach | fd65693 | 2011-08-25 23:11:19 -0700 | [diff] [blame] | 511 | u16 scd_bc_tbls_size = hw_params(trans).max_txq_num * |
Emmanuel Grumbach | ab9e212 | 2011-08-25 23:11:10 -0700 | [diff] [blame] | 512 | sizeof(struct iwlagn_scd_bc_tbl); |
| 513 | |
Emmanuel Grumbach | 02aca58 | 2011-06-28 08:58:41 -0700 | [diff] [blame] | 514 | /*It is not allowed to alloc twice, so warn when this happens. |
| 515 | * We cannot rely on the previous allocation, so free and fail */ |
| 516 | if (WARN_ON(priv->txq)) { |
| 517 | ret = -EINVAL; |
| 518 | goto error; |
| 519 | } |
| 520 | |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 521 | ret = iwlagn_alloc_dma_ptr(trans, &trans_pcie->scd_bc_tbls, |
Emmanuel Grumbach | ab9e212 | 2011-08-25 23:11:10 -0700 | [diff] [blame] | 522 | scd_bc_tbls_size); |
Emmanuel Grumbach | 02aca58 | 2011-06-28 08:58:41 -0700 | [diff] [blame] | 523 | if (ret) { |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 524 | IWL_ERR(trans, "Scheduler BC Table allocation failed\n"); |
Emmanuel Grumbach | 02aca58 | 2011-06-28 08:58:41 -0700 | [diff] [blame] | 525 | goto error; |
| 526 | } |
| 527 | |
| 528 | /* Alloc keep-warm buffer */ |
Emmanuel Grumbach | 9d6b2cb | 2011-08-25 23:11:12 -0700 | [diff] [blame] | 529 | ret = iwlagn_alloc_dma_ptr(trans, &trans_pcie->kw, IWL_KW_SIZE); |
Emmanuel Grumbach | 02aca58 | 2011-06-28 08:58:41 -0700 | [diff] [blame] | 530 | if (ret) { |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 531 | IWL_ERR(trans, "Keep Warm allocation failed\n"); |
Emmanuel Grumbach | 02aca58 | 2011-06-28 08:58:41 -0700 | [diff] [blame] | 532 | goto error; |
| 533 | } |
| 534 | |
| 535 | priv->txq = kzalloc(sizeof(struct iwl_tx_queue) * |
Emmanuel Grumbach | fd65693 | 2011-08-25 23:11:19 -0700 | [diff] [blame] | 536 | hw_params(trans).max_txq_num, GFP_KERNEL); |
Emmanuel Grumbach | 02aca58 | 2011-06-28 08:58:41 -0700 | [diff] [blame] | 537 | if (!priv->txq) { |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 538 | IWL_ERR(trans, "Not enough memory for txq\n"); |
Emmanuel Grumbach | 02aca58 | 2011-06-28 08:58:41 -0700 | [diff] [blame] | 539 | ret = ENOMEM; |
| 540 | goto error; |
| 541 | } |
| 542 | |
| 543 | /* Alloc and init all Tx queues, including the command queue (#4/#9) */ |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 544 | for (txq_id = 0; txq_id < hw_params(trans).max_txq_num; txq_id++) { |
| 545 | slots_num = (txq_id == trans->shrd->cmd_queue) ? |
Emmanuel Grumbach | 02aca58 | 2011-06-28 08:58:41 -0700 | [diff] [blame] | 546 | TFD_CMD_SLOTS : TFD_TX_CMD_SLOTS; |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 547 | ret = iwl_trans_txq_alloc(trans, &priv->txq[txq_id], slots_num, |
Emmanuel Grumbach | 02aca58 | 2011-06-28 08:58:41 -0700 | [diff] [blame] | 548 | txq_id); |
| 549 | if (ret) { |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 550 | IWL_ERR(trans, "Tx %d queue alloc failed\n", txq_id); |
Emmanuel Grumbach | 02aca58 | 2011-06-28 08:58:41 -0700 | [diff] [blame] | 551 | goto error; |
| 552 | } |
| 553 | } |
| 554 | |
| 555 | return 0; |
| 556 | |
| 557 | error: |
Emmanuel Grumbach | ae2c30b | 2011-08-25 23:11:20 -0700 | [diff] [blame] | 558 | iwl_trans_pcie_tx_free(trans); |
Emmanuel Grumbach | 02aca58 | 2011-06-28 08:58:41 -0700 | [diff] [blame] | 559 | |
| 560 | return ret; |
| 561 | } |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 562 | static int iwl_tx_init(struct iwl_trans *trans) |
Emmanuel Grumbach | 02aca58 | 2011-06-28 08:58:41 -0700 | [diff] [blame] | 563 | { |
| 564 | int ret; |
| 565 | int txq_id, slots_num; |
| 566 | unsigned long flags; |
| 567 | bool alloc = false; |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 568 | struct iwl_priv *priv = priv(trans); |
Emmanuel Grumbach | 9d6b2cb | 2011-08-25 23:11:12 -0700 | [diff] [blame] | 569 | struct iwl_trans_pcie *trans_pcie = |
| 570 | IWL_TRANS_GET_PCIE_TRANS(trans); |
Emmanuel Grumbach | 02aca58 | 2011-06-28 08:58:41 -0700 | [diff] [blame] | 571 | |
| 572 | if (!priv->txq) { |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 573 | ret = iwl_trans_tx_alloc(trans); |
Emmanuel Grumbach | 02aca58 | 2011-06-28 08:58:41 -0700 | [diff] [blame] | 574 | if (ret) |
| 575 | goto error; |
| 576 | alloc = true; |
| 577 | } |
| 578 | |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 579 | spin_lock_irqsave(&trans->shrd->lock, flags); |
Emmanuel Grumbach | 02aca58 | 2011-06-28 08:58:41 -0700 | [diff] [blame] | 580 | |
| 581 | /* Turn off all Tx DMA fifos */ |
Emmanuel Grumbach | 83ed901 | 2011-08-25 23:11:14 -0700 | [diff] [blame] | 582 | iwl_write_prph(bus(trans), SCD_TXFACT, 0); |
Emmanuel Grumbach | 02aca58 | 2011-06-28 08:58:41 -0700 | [diff] [blame] | 583 | |
| 584 | /* Tell NIC where to find the "keep warm" buffer */ |
Emmanuel Grumbach | 83ed901 | 2011-08-25 23:11:14 -0700 | [diff] [blame] | 585 | iwl_write_direct32(bus(trans), FH_KW_MEM_ADDR_REG, |
| 586 | trans_pcie->kw.dma >> 4); |
Emmanuel Grumbach | 02aca58 | 2011-06-28 08:58:41 -0700 | [diff] [blame] | 587 | |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 588 | spin_unlock_irqrestore(&trans->shrd->lock, flags); |
Emmanuel Grumbach | 02aca58 | 2011-06-28 08:58:41 -0700 | [diff] [blame] | 589 | |
| 590 | /* Alloc and init all Tx queues, including the command queue (#4/#9) */ |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 591 | for (txq_id = 0; txq_id < hw_params(trans).max_txq_num; txq_id++) { |
| 592 | slots_num = (txq_id == trans->shrd->cmd_queue) ? |
Emmanuel Grumbach | 02aca58 | 2011-06-28 08:58:41 -0700 | [diff] [blame] | 593 | TFD_CMD_SLOTS : TFD_TX_CMD_SLOTS; |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 594 | ret = iwl_trans_txq_init(trans, &priv->txq[txq_id], slots_num, |
Emmanuel Grumbach | 02aca58 | 2011-06-28 08:58:41 -0700 | [diff] [blame] | 595 | txq_id); |
| 596 | if (ret) { |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 597 | IWL_ERR(trans, "Tx %d queue init failed\n", txq_id); |
Emmanuel Grumbach | 02aca58 | 2011-06-28 08:58:41 -0700 | [diff] [blame] | 598 | goto error; |
| 599 | } |
| 600 | } |
| 601 | |
| 602 | return 0; |
| 603 | error: |
| 604 | /*Upon error, free only if we allocated something */ |
| 605 | if (alloc) |
Emmanuel Grumbach | ae2c30b | 2011-08-25 23:11:20 -0700 | [diff] [blame] | 606 | iwl_trans_pcie_tx_free(trans); |
Emmanuel Grumbach | 02aca58 | 2011-06-28 08:58:41 -0700 | [diff] [blame] | 607 | return ret; |
| 608 | } |
| 609 | |
Emmanuel Grumbach | 392f8b7 | 2011-07-10 15:30:15 +0300 | [diff] [blame] | 610 | static void iwl_set_pwr_vmain(struct iwl_priv *priv) |
| 611 | { |
Emmanuel Grumbach | 83ed901 | 2011-08-25 23:11:14 -0700 | [diff] [blame] | 612 | struct iwl_trans *trans = trans(priv); |
Emmanuel Grumbach | 392f8b7 | 2011-07-10 15:30:15 +0300 | [diff] [blame] | 613 | /* |
| 614 | * (for documentation purposes) |
| 615 | * to set power to V_AUX, do: |
| 616 | |
| 617 | if (pci_pme_capable(priv->pci_dev, PCI_D3cold)) |
Emmanuel Grumbach | 83ed901 | 2011-08-25 23:11:14 -0700 | [diff] [blame] | 618 | iwl_set_bits_mask_prph(bus(trans), APMG_PS_CTRL_REG, |
Emmanuel Grumbach | 392f8b7 | 2011-07-10 15:30:15 +0300 | [diff] [blame] | 619 | APMG_PS_CTRL_VAL_PWR_SRC_VAUX, |
| 620 | ~APMG_PS_CTRL_MSK_PWR_SRC); |
| 621 | */ |
| 622 | |
Emmanuel Grumbach | 83ed901 | 2011-08-25 23:11:14 -0700 | [diff] [blame] | 623 | iwl_set_bits_mask_prph(bus(trans), APMG_PS_CTRL_REG, |
Emmanuel Grumbach | 392f8b7 | 2011-07-10 15:30:15 +0300 | [diff] [blame] | 624 | APMG_PS_CTRL_VAL_PWR_SRC_VMAIN, |
| 625 | ~APMG_PS_CTRL_MSK_PWR_SRC); |
| 626 | } |
| 627 | |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 628 | static int iwl_nic_init(struct iwl_trans *trans) |
Emmanuel Grumbach | 392f8b7 | 2011-07-10 15:30:15 +0300 | [diff] [blame] | 629 | { |
| 630 | unsigned long flags; |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 631 | struct iwl_priv *priv = priv(trans); |
Emmanuel Grumbach | 392f8b7 | 2011-07-10 15:30:15 +0300 | [diff] [blame] | 632 | |
| 633 | /* nic_init */ |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 634 | spin_lock_irqsave(&trans->shrd->lock, flags); |
Emmanuel Grumbach | 392f8b7 | 2011-07-10 15:30:15 +0300 | [diff] [blame] | 635 | iwl_apm_init(priv); |
| 636 | |
| 637 | /* Set interrupt coalescing calibration timer to default (512 usecs) */ |
Emmanuel Grumbach | 83ed901 | 2011-08-25 23:11:14 -0700 | [diff] [blame] | 638 | iwl_write8(bus(trans), CSR_INT_COALESCING, |
| 639 | IWL_HOST_INT_CALIB_TIMEOUT_DEF); |
Emmanuel Grumbach | 392f8b7 | 2011-07-10 15:30:15 +0300 | [diff] [blame] | 640 | |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 641 | spin_unlock_irqrestore(&trans->shrd->lock, flags); |
Emmanuel Grumbach | 392f8b7 | 2011-07-10 15:30:15 +0300 | [diff] [blame] | 642 | |
| 643 | iwl_set_pwr_vmain(priv); |
| 644 | |
| 645 | priv->cfg->lib->nic_config(priv); |
| 646 | |
| 647 | /* Allocate the RX queue, or reset if it is already allocated */ |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 648 | iwl_rx_init(trans); |
Emmanuel Grumbach | 392f8b7 | 2011-07-10 15:30:15 +0300 | [diff] [blame] | 649 | |
| 650 | /* Allocate or reset and init all Tx and Command queues */ |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 651 | if (iwl_tx_init(trans)) |
Emmanuel Grumbach | 392f8b7 | 2011-07-10 15:30:15 +0300 | [diff] [blame] | 652 | return -ENOMEM; |
| 653 | |
Emmanuel Grumbach | fd65693 | 2011-08-25 23:11:19 -0700 | [diff] [blame] | 654 | if (hw_params(trans).shadow_reg_enable) { |
Emmanuel Grumbach | 392f8b7 | 2011-07-10 15:30:15 +0300 | [diff] [blame] | 655 | /* enable shadow regs in HW */ |
Emmanuel Grumbach | 83ed901 | 2011-08-25 23:11:14 -0700 | [diff] [blame] | 656 | iwl_set_bit(bus(trans), CSR_MAC_SHADOW_REG_CTRL, |
Emmanuel Grumbach | 392f8b7 | 2011-07-10 15:30:15 +0300 | [diff] [blame] | 657 | 0x800FFFFF); |
| 658 | } |
| 659 | |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 660 | set_bit(STATUS_INIT, &trans->shrd->status); |
Emmanuel Grumbach | 392f8b7 | 2011-07-10 15:30:15 +0300 | [diff] [blame] | 661 | |
| 662 | return 0; |
| 663 | } |
| 664 | |
| 665 | #define HW_READY_TIMEOUT (50) |
| 666 | |
| 667 | /* Note: returns poll_bit return value, which is >= 0 if success */ |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 668 | static int iwl_set_hw_ready(struct iwl_trans *trans) |
Emmanuel Grumbach | 392f8b7 | 2011-07-10 15:30:15 +0300 | [diff] [blame] | 669 | { |
| 670 | int ret; |
| 671 | |
Emmanuel Grumbach | 83ed901 | 2011-08-25 23:11:14 -0700 | [diff] [blame] | 672 | iwl_set_bit(bus(trans), CSR_HW_IF_CONFIG_REG, |
Emmanuel Grumbach | 392f8b7 | 2011-07-10 15:30:15 +0300 | [diff] [blame] | 673 | CSR_HW_IF_CONFIG_REG_BIT_NIC_READY); |
| 674 | |
| 675 | /* See if we got it */ |
Emmanuel Grumbach | 83ed901 | 2011-08-25 23:11:14 -0700 | [diff] [blame] | 676 | ret = iwl_poll_bit(bus(trans), CSR_HW_IF_CONFIG_REG, |
Emmanuel Grumbach | 392f8b7 | 2011-07-10 15:30:15 +0300 | [diff] [blame] | 677 | CSR_HW_IF_CONFIG_REG_BIT_NIC_READY, |
| 678 | CSR_HW_IF_CONFIG_REG_BIT_NIC_READY, |
| 679 | HW_READY_TIMEOUT); |
| 680 | |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 681 | IWL_DEBUG_INFO(trans, "hardware%s ready\n", ret < 0 ? " not" : ""); |
Emmanuel Grumbach | 392f8b7 | 2011-07-10 15:30:15 +0300 | [diff] [blame] | 682 | return ret; |
| 683 | } |
| 684 | |
| 685 | /* Note: returns standard 0/-ERROR code */ |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 686 | static int iwl_trans_pcie_prepare_card_hw(struct iwl_trans *trans) |
Emmanuel Grumbach | 392f8b7 | 2011-07-10 15:30:15 +0300 | [diff] [blame] | 687 | { |
| 688 | int ret; |
| 689 | |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 690 | IWL_DEBUG_INFO(trans, "iwl_trans_prepare_card_hw enter\n"); |
Emmanuel Grumbach | 392f8b7 | 2011-07-10 15:30:15 +0300 | [diff] [blame] | 691 | |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 692 | ret = iwl_set_hw_ready(trans); |
Emmanuel Grumbach | 392f8b7 | 2011-07-10 15:30:15 +0300 | [diff] [blame] | 693 | if (ret >= 0) |
| 694 | return 0; |
| 695 | |
| 696 | /* If HW is not ready, prepare the conditions to check again */ |
Emmanuel Grumbach | 83ed901 | 2011-08-25 23:11:14 -0700 | [diff] [blame] | 697 | iwl_set_bit(bus(trans), CSR_HW_IF_CONFIG_REG, |
Emmanuel Grumbach | 392f8b7 | 2011-07-10 15:30:15 +0300 | [diff] [blame] | 698 | CSR_HW_IF_CONFIG_REG_PREPARE); |
| 699 | |
Emmanuel Grumbach | 83ed901 | 2011-08-25 23:11:14 -0700 | [diff] [blame] | 700 | ret = iwl_poll_bit(bus(trans), CSR_HW_IF_CONFIG_REG, |
Emmanuel Grumbach | 392f8b7 | 2011-07-10 15:30:15 +0300 | [diff] [blame] | 701 | ~CSR_HW_IF_CONFIG_REG_BIT_NIC_PREPARE_DONE, |
| 702 | CSR_HW_IF_CONFIG_REG_BIT_NIC_PREPARE_DONE, 150000); |
| 703 | |
| 704 | if (ret < 0) |
| 705 | return ret; |
| 706 | |
| 707 | /* HW should be ready by now, check again. */ |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 708 | ret = iwl_set_hw_ready(trans); |
Emmanuel Grumbach | 392f8b7 | 2011-07-10 15:30:15 +0300 | [diff] [blame] | 709 | if (ret >= 0) |
| 710 | return 0; |
| 711 | return ret; |
| 712 | } |
| 713 | |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 714 | static int iwl_trans_pcie_start_device(struct iwl_trans *trans) |
Emmanuel Grumbach | 392f8b7 | 2011-07-10 15:30:15 +0300 | [diff] [blame] | 715 | { |
| 716 | int ret; |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 717 | struct iwl_priv *priv = priv(trans); |
Emmanuel Grumbach | 392f8b7 | 2011-07-10 15:30:15 +0300 | [diff] [blame] | 718 | |
Emmanuel Grumbach | fd65693 | 2011-08-25 23:11:19 -0700 | [diff] [blame] | 719 | priv->shrd->ucode_owner = IWL_OWNERSHIP_DRIVER; |
Emmanuel Grumbach | 392f8b7 | 2011-07-10 15:30:15 +0300 | [diff] [blame] | 720 | |
Emmanuel Grumbach | fd65693 | 2011-08-25 23:11:19 -0700 | [diff] [blame] | 721 | if ((hw_params(priv).sku & EEPROM_SKU_CAP_AMT_ENABLE) && |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 722 | iwl_trans_pcie_prepare_card_hw(trans)) { |
| 723 | IWL_WARN(trans, "Exit HW not ready\n"); |
Emmanuel Grumbach | 392f8b7 | 2011-07-10 15:30:15 +0300 | [diff] [blame] | 724 | return -EIO; |
| 725 | } |
| 726 | |
| 727 | /* If platform's RF_KILL switch is NOT set to KILL */ |
Emmanuel Grumbach | 83ed901 | 2011-08-25 23:11:14 -0700 | [diff] [blame] | 728 | if (iwl_read32(bus(trans), CSR_GP_CNTRL) & |
Emmanuel Grumbach | 392f8b7 | 2011-07-10 15:30:15 +0300 | [diff] [blame] | 729 | CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW) |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 730 | clear_bit(STATUS_RF_KILL_HW, &trans->shrd->status); |
Emmanuel Grumbach | 392f8b7 | 2011-07-10 15:30:15 +0300 | [diff] [blame] | 731 | else |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 732 | set_bit(STATUS_RF_KILL_HW, &trans->shrd->status); |
Emmanuel Grumbach | 392f8b7 | 2011-07-10 15:30:15 +0300 | [diff] [blame] | 733 | |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 734 | if (iwl_is_rfkill(trans->shrd)) { |
Emmanuel Grumbach | 392f8b7 | 2011-07-10 15:30:15 +0300 | [diff] [blame] | 735 | wiphy_rfkill_set_hw_state(priv->hw->wiphy, true); |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 736 | iwl_enable_interrupts(trans); |
Emmanuel Grumbach | 392f8b7 | 2011-07-10 15:30:15 +0300 | [diff] [blame] | 737 | return -ERFKILL; |
| 738 | } |
| 739 | |
Emmanuel Grumbach | 83ed901 | 2011-08-25 23:11:14 -0700 | [diff] [blame] | 740 | iwl_write32(bus(trans), CSR_INT, 0xFFFFFFFF); |
Emmanuel Grumbach | 392f8b7 | 2011-07-10 15:30:15 +0300 | [diff] [blame] | 741 | |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 742 | ret = iwl_nic_init(trans); |
Emmanuel Grumbach | 392f8b7 | 2011-07-10 15:30:15 +0300 | [diff] [blame] | 743 | if (ret) { |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 744 | IWL_ERR(trans, "Unable to init nic\n"); |
Emmanuel Grumbach | 392f8b7 | 2011-07-10 15:30:15 +0300 | [diff] [blame] | 745 | return ret; |
| 746 | } |
| 747 | |
| 748 | /* make sure rfkill handshake bits are cleared */ |
Emmanuel Grumbach | 83ed901 | 2011-08-25 23:11:14 -0700 | [diff] [blame] | 749 | iwl_write32(bus(trans), CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL); |
| 750 | iwl_write32(bus(trans), CSR_UCODE_DRV_GP1_CLR, |
Emmanuel Grumbach | 392f8b7 | 2011-07-10 15:30:15 +0300 | [diff] [blame] | 751 | CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED); |
| 752 | |
| 753 | /* clear (again), then enable host interrupts */ |
Emmanuel Grumbach | 83ed901 | 2011-08-25 23:11:14 -0700 | [diff] [blame] | 754 | iwl_write32(bus(trans), CSR_INT, 0xFFFFFFFF); |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 755 | iwl_enable_interrupts(trans); |
Emmanuel Grumbach | 392f8b7 | 2011-07-10 15:30:15 +0300 | [diff] [blame] | 756 | |
| 757 | /* really make sure rfkill handshake bits are cleared */ |
Emmanuel Grumbach | 83ed901 | 2011-08-25 23:11:14 -0700 | [diff] [blame] | 758 | iwl_write32(bus(trans), CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL); |
| 759 | iwl_write32(bus(trans), CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL); |
Emmanuel Grumbach | 392f8b7 | 2011-07-10 15:30:15 +0300 | [diff] [blame] | 760 | |
| 761 | return 0; |
| 762 | } |
| 763 | |
Emmanuel Grumbach | b3c2ce1 | 2011-07-07 15:50:10 +0300 | [diff] [blame] | 764 | /* |
| 765 | * Activate/Deactivate Tx DMA/FIFO channels according tx fifos mask |
Emmanuel Grumbach | 10b15e6 | 2011-08-25 23:10:43 -0700 | [diff] [blame] | 766 | * must be called under priv->shrd->lock and mac access |
Emmanuel Grumbach | b3c2ce1 | 2011-07-07 15:50:10 +0300 | [diff] [blame] | 767 | */ |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 768 | static void iwl_trans_txq_set_sched(struct iwl_trans *trans, u32 mask) |
Emmanuel Grumbach | b3c2ce1 | 2011-07-07 15:50:10 +0300 | [diff] [blame] | 769 | { |
Emmanuel Grumbach | 83ed901 | 2011-08-25 23:11:14 -0700 | [diff] [blame] | 770 | iwl_write_prph(bus(trans), SCD_TXFACT, mask); |
Emmanuel Grumbach | b3c2ce1 | 2011-07-07 15:50:10 +0300 | [diff] [blame] | 771 | } |
| 772 | |
| 773 | #define IWL_AC_UNSET -1 |
| 774 | |
| 775 | struct queue_to_fifo_ac { |
| 776 | s8 fifo, ac; |
| 777 | }; |
| 778 | |
| 779 | static const struct queue_to_fifo_ac iwlagn_default_queue_to_tx_fifo[] = { |
| 780 | { IWL_TX_FIFO_VO, IEEE80211_AC_VO, }, |
| 781 | { IWL_TX_FIFO_VI, IEEE80211_AC_VI, }, |
| 782 | { IWL_TX_FIFO_BE, IEEE80211_AC_BE, }, |
| 783 | { IWL_TX_FIFO_BK, IEEE80211_AC_BK, }, |
| 784 | { IWLAGN_CMD_FIFO_NUM, IWL_AC_UNSET, }, |
| 785 | { IWL_TX_FIFO_UNUSED, IWL_AC_UNSET, }, |
| 786 | { IWL_TX_FIFO_UNUSED, IWL_AC_UNSET, }, |
| 787 | { IWL_TX_FIFO_UNUSED, IWL_AC_UNSET, }, |
| 788 | { IWL_TX_FIFO_UNUSED, IWL_AC_UNSET, }, |
| 789 | { IWL_TX_FIFO_UNUSED, IWL_AC_UNSET, }, |
Johannes Berg | 72c04ce | 2011-07-23 10:24:40 -0700 | [diff] [blame] | 790 | { IWL_TX_FIFO_UNUSED, IWL_AC_UNSET, }, |
Emmanuel Grumbach | b3c2ce1 | 2011-07-07 15:50:10 +0300 | [diff] [blame] | 791 | }; |
| 792 | |
| 793 | static const struct queue_to_fifo_ac iwlagn_ipan_queue_to_tx_fifo[] = { |
| 794 | { IWL_TX_FIFO_VO, IEEE80211_AC_VO, }, |
| 795 | { IWL_TX_FIFO_VI, IEEE80211_AC_VI, }, |
| 796 | { IWL_TX_FIFO_BE, IEEE80211_AC_BE, }, |
| 797 | { IWL_TX_FIFO_BK, IEEE80211_AC_BK, }, |
| 798 | { IWL_TX_FIFO_BK_IPAN, IEEE80211_AC_BK, }, |
| 799 | { IWL_TX_FIFO_BE_IPAN, IEEE80211_AC_BE, }, |
| 800 | { IWL_TX_FIFO_VI_IPAN, IEEE80211_AC_VI, }, |
| 801 | { IWL_TX_FIFO_VO_IPAN, IEEE80211_AC_VO, }, |
| 802 | { IWL_TX_FIFO_BE_IPAN, 2, }, |
| 803 | { IWLAGN_CMD_FIFO_NUM, IWL_AC_UNSET, }, |
Johannes Berg | 72c04ce | 2011-07-23 10:24:40 -0700 | [diff] [blame] | 804 | { IWL_TX_FIFO_AUX, IWL_AC_UNSET, }, |
Emmanuel Grumbach | b3c2ce1 | 2011-07-07 15:50:10 +0300 | [diff] [blame] | 805 | }; |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 806 | static void iwl_trans_pcie_tx_start(struct iwl_trans *trans) |
Emmanuel Grumbach | b3c2ce1 | 2011-07-07 15:50:10 +0300 | [diff] [blame] | 807 | { |
| 808 | const struct queue_to_fifo_ac *queue_to_fifo; |
| 809 | struct iwl_rxon_context *ctx; |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 810 | struct iwl_priv *priv = priv(trans); |
Emmanuel Grumbach | 105183b | 2011-08-25 23:11:02 -0700 | [diff] [blame] | 811 | struct iwl_trans_pcie *trans_pcie = |
| 812 | IWL_TRANS_GET_PCIE_TRANS(trans); |
Emmanuel Grumbach | b3c2ce1 | 2011-07-07 15:50:10 +0300 | [diff] [blame] | 813 | u32 a; |
| 814 | unsigned long flags; |
| 815 | int i, chan; |
| 816 | u32 reg_val; |
| 817 | |
Emmanuel Grumbach | 105183b | 2011-08-25 23:11:02 -0700 | [diff] [blame] | 818 | spin_lock_irqsave(&trans->shrd->lock, flags); |
Emmanuel Grumbach | b3c2ce1 | 2011-07-07 15:50:10 +0300 | [diff] [blame] | 819 | |
Emmanuel Grumbach | 83ed901 | 2011-08-25 23:11:14 -0700 | [diff] [blame] | 820 | trans_pcie->scd_base_addr = |
| 821 | iwl_read_prph(bus(trans), SCD_SRAM_BASE_ADDR); |
Emmanuel Grumbach | 105183b | 2011-08-25 23:11:02 -0700 | [diff] [blame] | 822 | a = trans_pcie->scd_base_addr + SCD_CONTEXT_MEM_LOWER_BOUND; |
Emmanuel Grumbach | b3c2ce1 | 2011-07-07 15:50:10 +0300 | [diff] [blame] | 823 | /* reset conext data memory */ |
Emmanuel Grumbach | 105183b | 2011-08-25 23:11:02 -0700 | [diff] [blame] | 824 | for (; a < trans_pcie->scd_base_addr + SCD_CONTEXT_MEM_UPPER_BOUND; |
Emmanuel Grumbach | b3c2ce1 | 2011-07-07 15:50:10 +0300 | [diff] [blame] | 825 | a += 4) |
Emmanuel Grumbach | 83ed901 | 2011-08-25 23:11:14 -0700 | [diff] [blame] | 826 | iwl_write_targ_mem(bus(trans), a, 0); |
Emmanuel Grumbach | b3c2ce1 | 2011-07-07 15:50:10 +0300 | [diff] [blame] | 827 | /* reset tx status memory */ |
Emmanuel Grumbach | 105183b | 2011-08-25 23:11:02 -0700 | [diff] [blame] | 828 | for (; a < trans_pcie->scd_base_addr + SCD_TX_STTS_MEM_UPPER_BOUND; |
Emmanuel Grumbach | b3c2ce1 | 2011-07-07 15:50:10 +0300 | [diff] [blame] | 829 | a += 4) |
Emmanuel Grumbach | 83ed901 | 2011-08-25 23:11:14 -0700 | [diff] [blame] | 830 | iwl_write_targ_mem(bus(trans), a, 0); |
Emmanuel Grumbach | 105183b | 2011-08-25 23:11:02 -0700 | [diff] [blame] | 831 | for (; a < trans_pcie->scd_base_addr + |
Emmanuel Grumbach | d618912 | 2011-08-25 23:10:39 -0700 | [diff] [blame] | 832 | SCD_TRANS_TBL_OFFSET_QUEUE(hw_params(priv).max_txq_num); |
| 833 | a += 4) |
Emmanuel Grumbach | 83ed901 | 2011-08-25 23:11:14 -0700 | [diff] [blame] | 834 | iwl_write_targ_mem(bus(trans), a, 0); |
Emmanuel Grumbach | b3c2ce1 | 2011-07-07 15:50:10 +0300 | [diff] [blame] | 835 | |
Emmanuel Grumbach | 83ed901 | 2011-08-25 23:11:14 -0700 | [diff] [blame] | 836 | iwl_write_prph(bus(trans), SCD_DRAM_BASE_ADDR, |
Emmanuel Grumbach | 105183b | 2011-08-25 23:11:02 -0700 | [diff] [blame] | 837 | trans_pcie->scd_bc_tbls.dma >> 10); |
Emmanuel Grumbach | b3c2ce1 | 2011-07-07 15:50:10 +0300 | [diff] [blame] | 838 | |
| 839 | /* Enable DMA channel */ |
| 840 | for (chan = 0; chan < FH_TCSR_CHNL_NUM ; chan++) |
Emmanuel Grumbach | 83ed901 | 2011-08-25 23:11:14 -0700 | [diff] [blame] | 841 | iwl_write_direct32(bus(trans), FH_TCSR_CHNL_TX_CONFIG_REG(chan), |
Emmanuel Grumbach | b3c2ce1 | 2011-07-07 15:50:10 +0300 | [diff] [blame] | 842 | FH_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_ENABLE | |
| 843 | FH_TCSR_TX_CONFIG_REG_VAL_DMA_CREDIT_ENABLE); |
| 844 | |
| 845 | /* Update FH chicken bits */ |
Emmanuel Grumbach | 83ed901 | 2011-08-25 23:11:14 -0700 | [diff] [blame] | 846 | reg_val = iwl_read_direct32(bus(trans), FH_TX_CHICKEN_BITS_REG); |
| 847 | iwl_write_direct32(bus(trans), FH_TX_CHICKEN_BITS_REG, |
Emmanuel Grumbach | b3c2ce1 | 2011-07-07 15:50:10 +0300 | [diff] [blame] | 848 | reg_val | FH_TX_CHICKEN_BITS_SCD_AUTO_RETRY_EN); |
| 849 | |
Emmanuel Grumbach | 83ed901 | 2011-08-25 23:11:14 -0700 | [diff] [blame] | 850 | iwl_write_prph(bus(trans), SCD_QUEUECHAIN_SEL, |
Emmanuel Grumbach | b3c2ce1 | 2011-07-07 15:50:10 +0300 | [diff] [blame] | 851 | SCD_QUEUECHAIN_SEL_ALL(priv)); |
Emmanuel Grumbach | 83ed901 | 2011-08-25 23:11:14 -0700 | [diff] [blame] | 852 | iwl_write_prph(bus(trans), SCD_AGGR_SEL, 0); |
Emmanuel Grumbach | b3c2ce1 | 2011-07-07 15:50:10 +0300 | [diff] [blame] | 853 | |
| 854 | /* initiate the queues */ |
Emmanuel Grumbach | d618912 | 2011-08-25 23:10:39 -0700 | [diff] [blame] | 855 | for (i = 0; i < hw_params(priv).max_txq_num; i++) { |
Emmanuel Grumbach | 83ed901 | 2011-08-25 23:11:14 -0700 | [diff] [blame] | 856 | iwl_write_prph(bus(trans), SCD_QUEUE_RDPTR(i), 0); |
| 857 | iwl_write_direct32(bus(trans), HBUS_TARG_WRPTR, 0 | (i << 8)); |
| 858 | iwl_write_targ_mem(bus(trans), trans_pcie->scd_base_addr + |
Emmanuel Grumbach | b3c2ce1 | 2011-07-07 15:50:10 +0300 | [diff] [blame] | 859 | SCD_CONTEXT_QUEUE_OFFSET(i), 0); |
Emmanuel Grumbach | 83ed901 | 2011-08-25 23:11:14 -0700 | [diff] [blame] | 860 | iwl_write_targ_mem(bus(trans), trans_pcie->scd_base_addr + |
Emmanuel Grumbach | b3c2ce1 | 2011-07-07 15:50:10 +0300 | [diff] [blame] | 861 | SCD_CONTEXT_QUEUE_OFFSET(i) + |
| 862 | sizeof(u32), |
| 863 | ((SCD_WIN_SIZE << |
| 864 | SCD_QUEUE_CTX_REG2_WIN_SIZE_POS) & |
| 865 | SCD_QUEUE_CTX_REG2_WIN_SIZE_MSK) | |
| 866 | ((SCD_FRAME_LIMIT << |
| 867 | SCD_QUEUE_CTX_REG2_FRAME_LIMIT_POS) & |
| 868 | SCD_QUEUE_CTX_REG2_FRAME_LIMIT_MSK)); |
| 869 | } |
| 870 | |
Emmanuel Grumbach | 83ed901 | 2011-08-25 23:11:14 -0700 | [diff] [blame] | 871 | iwl_write_prph(bus(trans), SCD_INTERRUPT_MASK, |
Emmanuel Grumbach | 105183b | 2011-08-25 23:11:02 -0700 | [diff] [blame] | 872 | IWL_MASK(0, hw_params(trans).max_txq_num)); |
Emmanuel Grumbach | b3c2ce1 | 2011-07-07 15:50:10 +0300 | [diff] [blame] | 873 | |
| 874 | /* Activate all Tx DMA/FIFO channels */ |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 875 | iwl_trans_txq_set_sched(trans, IWL_MASK(0, 7)); |
Emmanuel Grumbach | b3c2ce1 | 2011-07-07 15:50:10 +0300 | [diff] [blame] | 876 | |
| 877 | /* map queues to FIFOs */ |
| 878 | if (priv->valid_contexts != BIT(IWL_RXON_CTX_BSS)) |
| 879 | queue_to_fifo = iwlagn_ipan_queue_to_tx_fifo; |
| 880 | else |
| 881 | queue_to_fifo = iwlagn_default_queue_to_tx_fifo; |
| 882 | |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 883 | iwl_trans_set_wr_ptrs(trans, trans->shrd->cmd_queue, 0); |
Emmanuel Grumbach | b3c2ce1 | 2011-07-07 15:50:10 +0300 | [diff] [blame] | 884 | |
| 885 | /* make sure all queue are not stopped */ |
| 886 | memset(&priv->queue_stopped[0], 0, sizeof(priv->queue_stopped)); |
| 887 | for (i = 0; i < 4; i++) |
| 888 | atomic_set(&priv->queue_stop_count[i], 0); |
| 889 | for_each_context(priv, ctx) |
| 890 | ctx->last_tx_rejected = false; |
| 891 | |
| 892 | /* reset to 0 to enable all the queue first */ |
| 893 | priv->txq_ctx_active_msk = 0; |
| 894 | |
Emmanuel Grumbach | effcea1 | 2011-08-25 23:11:03 -0700 | [diff] [blame] | 895 | BUILD_BUG_ON(ARRAY_SIZE(iwlagn_default_queue_to_tx_fifo) < |
Johannes Berg | 72c04ce | 2011-07-23 10:24:40 -0700 | [diff] [blame] | 896 | IWLAGN_FIRST_AMPDU_QUEUE); |
Emmanuel Grumbach | effcea1 | 2011-08-25 23:11:03 -0700 | [diff] [blame] | 897 | BUILD_BUG_ON(ARRAY_SIZE(iwlagn_ipan_queue_to_tx_fifo) < |
Johannes Berg | 72c04ce | 2011-07-23 10:24:40 -0700 | [diff] [blame] | 898 | IWLAGN_FIRST_AMPDU_QUEUE); |
Emmanuel Grumbach | b3c2ce1 | 2011-07-07 15:50:10 +0300 | [diff] [blame] | 899 | |
Johannes Berg | 72c04ce | 2011-07-23 10:24:40 -0700 | [diff] [blame] | 900 | for (i = 0; i < IWLAGN_FIRST_AMPDU_QUEUE; i++) { |
Emmanuel Grumbach | b3c2ce1 | 2011-07-07 15:50:10 +0300 | [diff] [blame] | 901 | int fifo = queue_to_fifo[i].fifo; |
| 902 | int ac = queue_to_fifo[i].ac; |
| 903 | |
| 904 | iwl_txq_ctx_activate(priv, i); |
| 905 | |
| 906 | if (fifo == IWL_TX_FIFO_UNUSED) |
| 907 | continue; |
| 908 | |
| 909 | if (ac != IWL_AC_UNSET) |
| 910 | iwl_set_swq_id(&priv->txq[i], ac, i); |
Emmanuel Grumbach | 48d42c4 | 2011-07-10 10:47:01 +0300 | [diff] [blame] | 911 | iwl_trans_tx_queue_set_status(priv, &priv->txq[i], fifo, 0); |
Emmanuel Grumbach | b3c2ce1 | 2011-07-07 15:50:10 +0300 | [diff] [blame] | 912 | } |
| 913 | |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 914 | spin_unlock_irqrestore(&trans->shrd->lock, flags); |
Emmanuel Grumbach | b3c2ce1 | 2011-07-07 15:50:10 +0300 | [diff] [blame] | 915 | |
| 916 | /* Enable L1-Active */ |
Emmanuel Grumbach | 83ed901 | 2011-08-25 23:11:14 -0700 | [diff] [blame] | 917 | iwl_clear_bits_prph(bus(trans), APMG_PCIDEV_STT_REG, |
Emmanuel Grumbach | b3c2ce1 | 2011-07-07 15:50:10 +0300 | [diff] [blame] | 918 | APMG_PCIDEV_STT_VAL_L1_ACT_DIS); |
| 919 | } |
| 920 | |
Emmanuel Grumbach | c170b86 | 2011-07-08 08:46:12 -0700 | [diff] [blame] | 921 | /** |
| 922 | * iwlagn_txq_ctx_stop - Stop all Tx DMA channels |
| 923 | */ |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 924 | static int iwl_trans_tx_stop(struct iwl_trans *trans) |
Emmanuel Grumbach | c170b86 | 2011-07-08 08:46:12 -0700 | [diff] [blame] | 925 | { |
| 926 | int ch, txq_id; |
| 927 | unsigned long flags; |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 928 | struct iwl_priv *priv = priv(trans); |
Emmanuel Grumbach | c170b86 | 2011-07-08 08:46:12 -0700 | [diff] [blame] | 929 | |
| 930 | /* Turn off all Tx DMA fifos */ |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 931 | spin_lock_irqsave(&trans->shrd->lock, flags); |
Emmanuel Grumbach | c170b86 | 2011-07-08 08:46:12 -0700 | [diff] [blame] | 932 | |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 933 | iwl_trans_txq_set_sched(trans, 0); |
Emmanuel Grumbach | c170b86 | 2011-07-08 08:46:12 -0700 | [diff] [blame] | 934 | |
| 935 | /* Stop each Tx DMA channel, and wait for it to be idle */ |
Wey-Yi Guy | 02f6f65 | 2011-07-08 08:46:15 -0700 | [diff] [blame] | 936 | for (ch = 0; ch < FH_TCSR_CHNL_NUM; ch++) { |
Emmanuel Grumbach | 83ed901 | 2011-08-25 23:11:14 -0700 | [diff] [blame] | 937 | iwl_write_direct32(bus(trans), |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 938 | FH_TCSR_CHNL_TX_CONFIG_REG(ch), 0x0); |
Emmanuel Grumbach | 83ed901 | 2011-08-25 23:11:14 -0700 | [diff] [blame] | 939 | if (iwl_poll_direct_bit(bus(trans), FH_TSSR_TX_STATUS_REG, |
Emmanuel Grumbach | c170b86 | 2011-07-08 08:46:12 -0700 | [diff] [blame] | 940 | FH_TSSR_TX_STATUS_REG_MSK_CHNL_IDLE(ch), |
| 941 | 1000)) |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 942 | IWL_ERR(trans, "Failing on timeout while stopping" |
Emmanuel Grumbach | c170b86 | 2011-07-08 08:46:12 -0700 | [diff] [blame] | 943 | " DMA channel %d [0x%08x]", ch, |
Emmanuel Grumbach | 83ed901 | 2011-08-25 23:11:14 -0700 | [diff] [blame] | 944 | iwl_read_direct32(bus(trans), |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 945 | FH_TSSR_TX_STATUS_REG)); |
Emmanuel Grumbach | c170b86 | 2011-07-08 08:46:12 -0700 | [diff] [blame] | 946 | } |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 947 | spin_unlock_irqrestore(&trans->shrd->lock, flags); |
Emmanuel Grumbach | c170b86 | 2011-07-08 08:46:12 -0700 | [diff] [blame] | 948 | |
| 949 | if (!priv->txq) { |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 950 | IWL_WARN(trans, "Stopping tx queues that aren't allocated..."); |
Emmanuel Grumbach | c170b86 | 2011-07-08 08:46:12 -0700 | [diff] [blame] | 951 | return 0; |
| 952 | } |
| 953 | |
| 954 | /* Unmap DMA from host system and free skb's */ |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 955 | for (txq_id = 0; txq_id < hw_params(trans).max_txq_num; txq_id++) |
| 956 | iwl_tx_queue_unmap(trans, txq_id); |
Emmanuel Grumbach | c170b86 | 2011-07-08 08:46:12 -0700 | [diff] [blame] | 957 | |
| 958 | return 0; |
| 959 | } |
| 960 | |
Emmanuel Grumbach | ae2c30b | 2011-08-25 23:11:20 -0700 | [diff] [blame] | 961 | static void iwl_trans_pcie_disable_sync_irq(struct iwl_trans *trans) |
| 962 | { |
| 963 | unsigned long flags; |
| 964 | struct iwl_trans_pcie *trans_pcie = |
| 965 | IWL_TRANS_GET_PCIE_TRANS(trans); |
| 966 | |
| 967 | spin_lock_irqsave(&trans->shrd->lock, flags); |
| 968 | iwl_disable_interrupts(trans); |
| 969 | spin_unlock_irqrestore(&trans->shrd->lock, flags); |
| 970 | |
| 971 | /* wait to make sure we flush pending tasklet*/ |
| 972 | synchronize_irq(bus(trans)->irq); |
| 973 | tasklet_kill(&trans_pcie->irq_tasklet); |
| 974 | } |
| 975 | |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 976 | static void iwl_trans_pcie_stop_device(struct iwl_trans *trans) |
Emmanuel Grumbach | ab6cf8e | 2011-07-07 14:37:26 +0300 | [diff] [blame] | 977 | { |
Emmanuel Grumbach | ab6cf8e | 2011-07-07 14:37:26 +0300 | [diff] [blame] | 978 | /* stop and reset the on-board processor */ |
Emmanuel Grumbach | 83ed901 | 2011-08-25 23:11:14 -0700 | [diff] [blame] | 979 | iwl_write32(bus(trans), CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET); |
Emmanuel Grumbach | ab6cf8e | 2011-07-07 14:37:26 +0300 | [diff] [blame] | 980 | |
| 981 | /* tell the device to stop sending interrupts */ |
Emmanuel Grumbach | ae2c30b | 2011-08-25 23:11:20 -0700 | [diff] [blame] | 982 | iwl_trans_pcie_disable_sync_irq(trans); |
Emmanuel Grumbach | ab6cf8e | 2011-07-07 14:37:26 +0300 | [diff] [blame] | 983 | |
| 984 | /* device going down, Stop using ICT table */ |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 985 | iwl_disable_ict(trans); |
Emmanuel Grumbach | ab6cf8e | 2011-07-07 14:37:26 +0300 | [diff] [blame] | 986 | |
| 987 | /* |
| 988 | * If a HW restart happens during firmware loading, |
| 989 | * then the firmware loading might call this function |
| 990 | * and later it might be called again due to the |
| 991 | * restart. So don't process again if the device is |
| 992 | * already dead. |
| 993 | */ |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 994 | if (test_bit(STATUS_DEVICE_ENABLED, &trans->shrd->status)) { |
| 995 | iwl_trans_tx_stop(trans); |
| 996 | iwl_trans_rx_stop(trans); |
Emmanuel Grumbach | ab6cf8e | 2011-07-07 14:37:26 +0300 | [diff] [blame] | 997 | |
| 998 | /* Power-down device's busmaster DMA clocks */ |
Emmanuel Grumbach | 83ed901 | 2011-08-25 23:11:14 -0700 | [diff] [blame] | 999 | iwl_write_prph(bus(trans), APMG_CLK_DIS_REG, |
Emmanuel Grumbach | ab6cf8e | 2011-07-07 14:37:26 +0300 | [diff] [blame] | 1000 | APMG_CLK_VAL_DMA_CLK_RQT); |
| 1001 | udelay(5); |
| 1002 | } |
| 1003 | |
| 1004 | /* Make sure (redundant) we've released our request to stay awake */ |
Emmanuel Grumbach | 83ed901 | 2011-08-25 23:11:14 -0700 | [diff] [blame] | 1005 | iwl_clear_bit(bus(trans), CSR_GP_CNTRL, |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 1006 | CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ); |
Emmanuel Grumbach | ab6cf8e | 2011-07-07 14:37:26 +0300 | [diff] [blame] | 1007 | |
| 1008 | /* Stop the device, and put it in low power state */ |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 1009 | iwl_apm_stop(priv(trans)); |
Emmanuel Grumbach | ab6cf8e | 2011-07-07 14:37:26 +0300 | [diff] [blame] | 1010 | } |
| 1011 | |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 1012 | static struct iwl_tx_cmd *iwl_trans_pcie_get_tx_cmd(struct iwl_trans *trans, |
Emmanuel Grumbach | 47c1b49 | 2011-07-03 11:22:15 +0300 | [diff] [blame] | 1013 | int txq_id) |
| 1014 | { |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 1015 | struct iwl_priv *priv = priv(trans); |
Emmanuel Grumbach | 47c1b49 | 2011-07-03 11:22:15 +0300 | [diff] [blame] | 1016 | struct iwl_tx_queue *txq = &priv->txq[txq_id]; |
| 1017 | struct iwl_queue *q = &txq->q; |
| 1018 | struct iwl_device_cmd *dev_cmd; |
| 1019 | |
| 1020 | if (unlikely(iwl_queue_space(q) < q->high_mark)) |
| 1021 | return NULL; |
| 1022 | |
| 1023 | /* |
| 1024 | * Set up the Tx-command (not MAC!) header. |
| 1025 | * Store the chosen Tx queue and TFD index within the sequence field; |
| 1026 | * after Tx, uCode's Tx response will return this value so driver can |
| 1027 | * locate the frame within the tx queue and do post-tx processing. |
| 1028 | */ |
| 1029 | dev_cmd = txq->cmd[q->write_ptr]; |
| 1030 | memset(dev_cmd, 0, sizeof(*dev_cmd)); |
| 1031 | dev_cmd->hdr.cmd = REPLY_TX; |
| 1032 | dev_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) | |
| 1033 | INDEX_TO_SEQ(q->write_ptr))); |
| 1034 | return &dev_cmd->cmd.tx; |
| 1035 | } |
| 1036 | |
Emmanuel Grumbach | e6bb4c9 | 2011-08-25 23:10:48 -0700 | [diff] [blame] | 1037 | static int iwl_trans_pcie_tx(struct iwl_priv *priv, struct sk_buff *skb, |
Emmanuel Grumbach | 2c45229 | 2011-08-25 23:11:21 -0700 | [diff] [blame^] | 1038 | struct iwl_tx_cmd *tx_cmd, int txq_id, __le16 fc, bool ampdu) |
Emmanuel Grumbach | 47c1b49 | 2011-07-03 11:22:15 +0300 | [diff] [blame] | 1039 | { |
| 1040 | struct iwl_tx_queue *txq = &priv->txq[txq_id]; |
| 1041 | struct iwl_queue *q = &txq->q; |
| 1042 | struct iwl_device_cmd *dev_cmd = txq->cmd[q->write_ptr]; |
| 1043 | struct iwl_cmd_meta *out_meta; |
| 1044 | |
| 1045 | dma_addr_t phys_addr = 0; |
| 1046 | dma_addr_t txcmd_phys; |
| 1047 | dma_addr_t scratch_phys; |
| 1048 | u16 len, firstlen, secondlen; |
| 1049 | u8 wait_write_ptr = 0; |
| 1050 | u8 hdr_len = ieee80211_hdrlen(fc); |
| 1051 | |
| 1052 | /* Set up driver data for this TFD */ |
Emmanuel Grumbach | 2c45229 | 2011-08-25 23:11:21 -0700 | [diff] [blame^] | 1053 | txq->skbs[q->write_ptr] = skb; |
Emmanuel Grumbach | 47c1b49 | 2011-07-03 11:22:15 +0300 | [diff] [blame] | 1054 | |
| 1055 | /* Set up first empty entry in queue's array of Tx/cmd buffers */ |
| 1056 | out_meta = &txq->meta[q->write_ptr]; |
| 1057 | |
| 1058 | /* |
| 1059 | * Use the first empty entry in this queue's command buffer array |
| 1060 | * to contain the Tx command and MAC header concatenated together |
| 1061 | * (payload data will be in another buffer). |
| 1062 | * Size of this varies, due to varying MAC header length. |
| 1063 | * If end is not dword aligned, we'll have 2 extra bytes at the end |
| 1064 | * of the MAC header (device reads on dword boundaries). |
| 1065 | * We'll tell device about this padding later. |
| 1066 | */ |
| 1067 | len = sizeof(struct iwl_tx_cmd) + |
| 1068 | sizeof(struct iwl_cmd_header) + hdr_len; |
| 1069 | firstlen = (len + 3) & ~3; |
| 1070 | |
| 1071 | /* Tell NIC about any 2-byte padding after MAC header */ |
| 1072 | if (firstlen != len) |
| 1073 | tx_cmd->tx_flags |= TX_CMD_FLG_MH_PAD_MSK; |
| 1074 | |
| 1075 | /* Physical address of this Tx command's header (not MAC header!), |
| 1076 | * within command buffer array. */ |
Emmanuel Grumbach | d593411 | 2011-07-11 10:48:51 +0300 | [diff] [blame] | 1077 | txcmd_phys = dma_map_single(priv->bus->dev, |
Emmanuel Grumbach | 47c1b49 | 2011-07-03 11:22:15 +0300 | [diff] [blame] | 1078 | &dev_cmd->hdr, firstlen, |
| 1079 | DMA_BIDIRECTIONAL); |
Emmanuel Grumbach | d593411 | 2011-07-11 10:48:51 +0300 | [diff] [blame] | 1080 | if (unlikely(dma_mapping_error(priv->bus->dev, txcmd_phys))) |
Emmanuel Grumbach | 47c1b49 | 2011-07-03 11:22:15 +0300 | [diff] [blame] | 1081 | return -1; |
| 1082 | dma_unmap_addr_set(out_meta, mapping, txcmd_phys); |
| 1083 | dma_unmap_len_set(out_meta, len, firstlen); |
| 1084 | |
| 1085 | if (!ieee80211_has_morefrags(fc)) { |
| 1086 | txq->need_update = 1; |
| 1087 | } else { |
| 1088 | wait_write_ptr = 1; |
| 1089 | txq->need_update = 0; |
| 1090 | } |
| 1091 | |
| 1092 | /* Set up TFD's 2nd entry to point directly to remainder of skb, |
| 1093 | * if any (802.11 null frames have no payload). */ |
| 1094 | secondlen = skb->len - hdr_len; |
| 1095 | if (secondlen > 0) { |
Emmanuel Grumbach | d593411 | 2011-07-11 10:48:51 +0300 | [diff] [blame] | 1096 | phys_addr = dma_map_single(priv->bus->dev, skb->data + hdr_len, |
Emmanuel Grumbach | 47c1b49 | 2011-07-03 11:22:15 +0300 | [diff] [blame] | 1097 | secondlen, DMA_TO_DEVICE); |
Emmanuel Grumbach | d593411 | 2011-07-11 10:48:51 +0300 | [diff] [blame] | 1098 | if (unlikely(dma_mapping_error(priv->bus->dev, phys_addr))) { |
| 1099 | dma_unmap_single(priv->bus->dev, |
Emmanuel Grumbach | 47c1b49 | 2011-07-03 11:22:15 +0300 | [diff] [blame] | 1100 | dma_unmap_addr(out_meta, mapping), |
| 1101 | dma_unmap_len(out_meta, len), |
| 1102 | DMA_BIDIRECTIONAL); |
| 1103 | return -1; |
| 1104 | } |
| 1105 | } |
| 1106 | |
| 1107 | /* Attach buffers to TFD */ |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 1108 | iwlagn_txq_attach_buf_to_tfd(trans(priv), txq, txcmd_phys, |
| 1109 | firstlen, 1); |
Emmanuel Grumbach | 47c1b49 | 2011-07-03 11:22:15 +0300 | [diff] [blame] | 1110 | if (secondlen > 0) |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 1111 | iwlagn_txq_attach_buf_to_tfd(trans(priv), txq, phys_addr, |
Emmanuel Grumbach | 47c1b49 | 2011-07-03 11:22:15 +0300 | [diff] [blame] | 1112 | secondlen, 0); |
| 1113 | |
| 1114 | scratch_phys = txcmd_phys + sizeof(struct iwl_cmd_header) + |
| 1115 | offsetof(struct iwl_tx_cmd, scratch); |
| 1116 | |
| 1117 | /* take back ownership of DMA buffer to enable update */ |
Emmanuel Grumbach | d593411 | 2011-07-11 10:48:51 +0300 | [diff] [blame] | 1118 | dma_sync_single_for_cpu(priv->bus->dev, txcmd_phys, firstlen, |
Emmanuel Grumbach | 47c1b49 | 2011-07-03 11:22:15 +0300 | [diff] [blame] | 1119 | DMA_BIDIRECTIONAL); |
| 1120 | tx_cmd->dram_lsb_ptr = cpu_to_le32(scratch_phys); |
| 1121 | tx_cmd->dram_msb_ptr = iwl_get_dma_hi_addr(scratch_phys); |
| 1122 | |
| 1123 | IWL_DEBUG_TX(priv, "sequence nr = 0X%x\n", |
| 1124 | le16_to_cpu(dev_cmd->hdr.sequence)); |
| 1125 | IWL_DEBUG_TX(priv, "tx_flags = 0X%x\n", le32_to_cpu(tx_cmd->tx_flags)); |
| 1126 | iwl_print_hex_dump(priv, IWL_DL_TX, (u8 *)tx_cmd, sizeof(*tx_cmd)); |
| 1127 | iwl_print_hex_dump(priv, IWL_DL_TX, (u8 *)tx_cmd->hdr, hdr_len); |
| 1128 | |
| 1129 | /* Set up entry for this TFD in Tx byte-count array */ |
| 1130 | if (ampdu) |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 1131 | iwl_trans_txq_update_byte_cnt_tbl(trans(priv), txq, |
Emmanuel Grumbach | 47c1b49 | 2011-07-03 11:22:15 +0300 | [diff] [blame] | 1132 | le16_to_cpu(tx_cmd->len)); |
| 1133 | |
Emmanuel Grumbach | d593411 | 2011-07-11 10:48:51 +0300 | [diff] [blame] | 1134 | dma_sync_single_for_device(priv->bus->dev, txcmd_phys, firstlen, |
Emmanuel Grumbach | 47c1b49 | 2011-07-03 11:22:15 +0300 | [diff] [blame] | 1135 | DMA_BIDIRECTIONAL); |
| 1136 | |
| 1137 | trace_iwlwifi_dev_tx(priv, |
| 1138 | &((struct iwl_tfd *)txq->tfds)[txq->q.write_ptr], |
| 1139 | sizeof(struct iwl_tfd), |
| 1140 | &dev_cmd->hdr, firstlen, |
| 1141 | skb->data + hdr_len, secondlen); |
| 1142 | |
| 1143 | /* Tell device the write index *just past* this latest filled TFD */ |
| 1144 | q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd); |
Emmanuel Grumbach | fd65693 | 2011-08-25 23:11:19 -0700 | [diff] [blame] | 1145 | iwl_txq_update_write_ptr(trans(priv), txq); |
Emmanuel Grumbach | 47c1b49 | 2011-07-03 11:22:15 +0300 | [diff] [blame] | 1146 | |
| 1147 | /* |
| 1148 | * At this point the frame is "transmitted" successfully |
| 1149 | * and we will get a TX status notification eventually, |
| 1150 | * regardless of the value of ret. "ret" only indicates |
| 1151 | * whether or not we should update the write pointer. |
| 1152 | */ |
Emmanuel Grumbach | a0eaad7 | 2011-08-25 23:11:00 -0700 | [diff] [blame] | 1153 | if (iwl_queue_space(q) < q->high_mark) { |
Emmanuel Grumbach | 47c1b49 | 2011-07-03 11:22:15 +0300 | [diff] [blame] | 1154 | if (wait_write_ptr) { |
| 1155 | txq->need_update = 1; |
Emmanuel Grumbach | fd65693 | 2011-08-25 23:11:19 -0700 | [diff] [blame] | 1156 | iwl_txq_update_write_ptr(trans(priv), txq); |
Emmanuel Grumbach | 47c1b49 | 2011-07-03 11:22:15 +0300 | [diff] [blame] | 1157 | } else { |
| 1158 | iwl_stop_queue(priv, txq); |
| 1159 | } |
| 1160 | } |
| 1161 | return 0; |
| 1162 | } |
| 1163 | |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 1164 | static void iwl_trans_pcie_kick_nic(struct iwl_trans *trans) |
Emmanuel Grumbach | 56d90f4 | 2011-07-07 18:20:01 +0300 | [diff] [blame] | 1165 | { |
| 1166 | /* Remove all resets to allow NIC to operate */ |
Emmanuel Grumbach | 83ed901 | 2011-08-25 23:11:14 -0700 | [diff] [blame] | 1167 | iwl_write32(bus(trans), CSR_RESET, 0); |
Emmanuel Grumbach | 56d90f4 | 2011-07-07 18:20:01 +0300 | [diff] [blame] | 1168 | } |
| 1169 | |
Emmanuel Grumbach | e6bb4c9 | 2011-08-25 23:10:48 -0700 | [diff] [blame] | 1170 | static int iwl_trans_pcie_request_irq(struct iwl_trans *trans) |
Emmanuel Grumbach | a27367d | 2011-07-04 09:06:44 +0300 | [diff] [blame] | 1171 | { |
Emmanuel Grumbach | 5a878bf | 2011-08-25 23:10:51 -0700 | [diff] [blame] | 1172 | struct iwl_trans_pcie *trans_pcie = |
| 1173 | IWL_TRANS_GET_PCIE_TRANS(trans); |
Emmanuel Grumbach | 34c1b7b | 2011-07-04 08:58:19 +0300 | [diff] [blame] | 1174 | int err; |
| 1175 | |
Emmanuel Grumbach | 0c32576 | 2011-08-25 23:10:53 -0700 | [diff] [blame] | 1176 | trans_pcie->inta_mask = CSR_INI_SET_MASK; |
Emmanuel Grumbach | 1e89cba | 2011-07-20 17:51:22 -0700 | [diff] [blame] | 1177 | |
Emmanuel Grumbach | 0c32576 | 2011-08-25 23:10:53 -0700 | [diff] [blame] | 1178 | tasklet_init(&trans_pcie->irq_tasklet, (void (*)(unsigned long)) |
| 1179 | iwl_irq_tasklet, (unsigned long)trans); |
| 1180 | |
| 1181 | iwl_alloc_isr_ict(trans); |
Emmanuel Grumbach | 34c1b7b | 2011-07-04 08:58:19 +0300 | [diff] [blame] | 1182 | |
Emmanuel Grumbach | e6bb4c9 | 2011-08-25 23:10:48 -0700 | [diff] [blame] | 1183 | err = request_irq(bus(trans)->irq, iwl_isr_ict, IRQF_SHARED, |
Emmanuel Grumbach | 0c32576 | 2011-08-25 23:10:53 -0700 | [diff] [blame] | 1184 | DRV_NAME, trans); |
Emmanuel Grumbach | 34c1b7b | 2011-07-04 08:58:19 +0300 | [diff] [blame] | 1185 | if (err) { |
Emmanuel Grumbach | 0c32576 | 2011-08-25 23:10:53 -0700 | [diff] [blame] | 1186 | IWL_ERR(trans, "Error allocating IRQ %d\n", bus(trans)->irq); |
| 1187 | iwl_free_isr_ict(trans); |
Emmanuel Grumbach | 34c1b7b | 2011-07-04 08:58:19 +0300 | [diff] [blame] | 1188 | return err; |
| 1189 | } |
| 1190 | |
Emmanuel Grumbach | 5a878bf | 2011-08-25 23:10:51 -0700 | [diff] [blame] | 1191 | INIT_WORK(&trans_pcie->rx_replenish, iwl_bg_rx_replenish); |
Emmanuel Grumbach | 34c1b7b | 2011-07-04 08:58:19 +0300 | [diff] [blame] | 1192 | return 0; |
Emmanuel Grumbach | c85eb61 | 2011-06-14 10:13:24 +0300 | [diff] [blame] | 1193 | } |
Emmanuel Grumbach | e6bb4c9 | 2011-08-25 23:10:48 -0700 | [diff] [blame] | 1194 | |
Emmanuel Grumbach | a0eaad7 | 2011-08-25 23:11:00 -0700 | [diff] [blame] | 1195 | static void iwl_trans_pcie_reclaim(struct iwl_trans *trans, int txq_id, |
| 1196 | int ssn, u32 status, struct sk_buff_head *skbs) |
| 1197 | { |
| 1198 | struct iwl_priv *priv = priv(trans); |
| 1199 | struct iwl_tx_queue *txq = &priv->txq[txq_id]; |
| 1200 | /* n_bd is usually 256 => n_bd - 1 = 0xff */ |
| 1201 | int tfd_num = ssn & (txq->q.n_bd - 1); |
| 1202 | u8 agg_state; |
| 1203 | bool cond; |
| 1204 | |
| 1205 | if (txq->sched_retry) { |
| 1206 | agg_state = |
Emmanuel Grumbach | 5f85a78 | 2011-08-25 23:11:18 -0700 | [diff] [blame] | 1207 | priv->shrd->tid_data[txq->sta_id][txq->tid].agg.state; |
Emmanuel Grumbach | a0eaad7 | 2011-08-25 23:11:00 -0700 | [diff] [blame] | 1208 | cond = (agg_state != IWL_EMPTYING_HW_QUEUE_DELBA); |
| 1209 | } else { |
| 1210 | cond = (status != TX_STATUS_FAIL_PASSIVE_NO_RX); |
| 1211 | } |
| 1212 | |
| 1213 | if (txq->q.read_ptr != tfd_num) { |
| 1214 | IWL_DEBUG_TX_REPLY(trans, "Retry scheduler reclaim " |
| 1215 | "scd_ssn=%d idx=%d txq=%d swq=%d\n", |
| 1216 | ssn , tfd_num, txq_id, txq->swq_id); |
| 1217 | iwl_tx_queue_reclaim(trans, txq_id, tfd_num, skbs); |
| 1218 | if (iwl_queue_space(&txq->q) > txq->q.low_mark && cond) |
| 1219 | iwl_wake_queue(priv, txq); |
| 1220 | } |
| 1221 | } |
| 1222 | |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 1223 | static void iwl_trans_pcie_free(struct iwl_trans *trans) |
Emmanuel Grumbach | e6bb4c9 | 2011-08-25 23:10:48 -0700 | [diff] [blame] | 1224 | { |
Emmanuel Grumbach | ae2c30b | 2011-08-25 23:11:20 -0700 | [diff] [blame] | 1225 | iwl_trans_pcie_tx_free(trans); |
| 1226 | iwl_trans_pcie_rx_free(trans); |
Emmanuel Grumbach | 6d8f6ee | 2011-08-25 23:11:06 -0700 | [diff] [blame] | 1227 | free_irq(bus(trans)->irq, trans); |
| 1228 | iwl_free_isr_ict(trans); |
| 1229 | trans->shrd->trans = NULL; |
| 1230 | kfree(trans); |
Emmanuel Grumbach | e6bb4c9 | 2011-08-25 23:10:48 -0700 | [diff] [blame] | 1231 | } |
| 1232 | |
Emmanuel Grumbach | 57210f7 | 2011-08-25 23:10:52 -0700 | [diff] [blame] | 1233 | #ifdef CONFIG_PM |
| 1234 | |
| 1235 | static int iwl_trans_pcie_suspend(struct iwl_trans *trans) |
| 1236 | { |
| 1237 | /* |
| 1238 | * This function is called when system goes into suspend state |
| 1239 | * mac80211 will call iwl_mac_stop() from the mac80211 suspend function |
| 1240 | * first but since iwl_mac_stop() has no knowledge of who the caller is, |
| 1241 | * it will not call apm_ops.stop() to stop the DMA operation. |
| 1242 | * Calling apm_ops.stop here to make sure we stop the DMA. |
| 1243 | * |
| 1244 | * But of course ... if we have configured WoWLAN then we did other |
| 1245 | * things already :-) |
| 1246 | */ |
| 1247 | if (!trans->shrd->wowlan) |
| 1248 | iwl_apm_stop(priv(trans)); |
| 1249 | |
| 1250 | return 0; |
| 1251 | } |
| 1252 | |
| 1253 | static int iwl_trans_pcie_resume(struct iwl_trans *trans) |
| 1254 | { |
| 1255 | bool hw_rfkill = false; |
| 1256 | |
Emmanuel Grumbach | 0c32576 | 2011-08-25 23:10:53 -0700 | [diff] [blame] | 1257 | iwl_enable_interrupts(trans); |
Emmanuel Grumbach | 57210f7 | 2011-08-25 23:10:52 -0700 | [diff] [blame] | 1258 | |
Emmanuel Grumbach | 83ed901 | 2011-08-25 23:11:14 -0700 | [diff] [blame] | 1259 | if (!(iwl_read32(bus(trans), CSR_GP_CNTRL) & |
Emmanuel Grumbach | 57210f7 | 2011-08-25 23:10:52 -0700 | [diff] [blame] | 1260 | CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)) |
| 1261 | hw_rfkill = true; |
| 1262 | |
| 1263 | if (hw_rfkill) |
| 1264 | set_bit(STATUS_RF_KILL_HW, &trans->shrd->status); |
| 1265 | else |
| 1266 | clear_bit(STATUS_RF_KILL_HW, &trans->shrd->status); |
| 1267 | |
| 1268 | wiphy_rfkill_set_hw_state(priv(trans)->hw->wiphy, hw_rfkill); |
| 1269 | |
| 1270 | return 0; |
| 1271 | } |
| 1272 | #else /* CONFIG_PM */ |
| 1273 | static int iwl_trans_pcie_suspend(struct iwl_trans *trans) |
| 1274 | { return 0; } |
| 1275 | |
| 1276 | static int iwl_trans_pcie_resume(struct iwl_trans *trans) |
| 1277 | { return 0; } |
| 1278 | |
| 1279 | #endif /* CONFIG_PM */ |
| 1280 | |
Emmanuel Grumbach | e6bb4c9 | 2011-08-25 23:10:48 -0700 | [diff] [blame] | 1281 | const struct iwl_trans_ops trans_ops_pcie; |
| 1282 | |
| 1283 | static struct iwl_trans *iwl_trans_pcie_alloc(struct iwl_shared *shrd) |
| 1284 | { |
| 1285 | struct iwl_trans *iwl_trans = kzalloc(sizeof(struct iwl_trans) + |
| 1286 | sizeof(struct iwl_trans_pcie), |
| 1287 | GFP_KERNEL); |
| 1288 | if (iwl_trans) { |
Emmanuel Grumbach | 5a878bf | 2011-08-25 23:10:51 -0700 | [diff] [blame] | 1289 | struct iwl_trans_pcie *trans_pcie = |
| 1290 | IWL_TRANS_GET_PCIE_TRANS(iwl_trans); |
Emmanuel Grumbach | e6bb4c9 | 2011-08-25 23:10:48 -0700 | [diff] [blame] | 1291 | iwl_trans->ops = &trans_ops_pcie; |
| 1292 | iwl_trans->shrd = shrd; |
Emmanuel Grumbach | 5a878bf | 2011-08-25 23:10:51 -0700 | [diff] [blame] | 1293 | trans_pcie->trans = iwl_trans; |
Emmanuel Grumbach | 7201247 | 2011-08-25 23:11:07 -0700 | [diff] [blame] | 1294 | spin_lock_init(&iwl_trans->hcmd_lock); |
Emmanuel Grumbach | e6bb4c9 | 2011-08-25 23:10:48 -0700 | [diff] [blame] | 1295 | } |
| 1296 | |
| 1297 | return iwl_trans; |
| 1298 | } |
| 1299 | |
Emmanuel Grumbach | 87e5666 | 2011-08-25 23:10:50 -0700 | [diff] [blame] | 1300 | #ifdef CONFIG_IWLWIFI_DEBUGFS |
| 1301 | /* create and remove of files */ |
| 1302 | #define DEBUGFS_ADD_FILE(name, parent, mode) do { \ |
Emmanuel Grumbach | 5a878bf | 2011-08-25 23:10:51 -0700 | [diff] [blame] | 1303 | if (!debugfs_create_file(#name, mode, parent, trans, \ |
Emmanuel Grumbach | 87e5666 | 2011-08-25 23:10:50 -0700 | [diff] [blame] | 1304 | &iwl_dbgfs_##name##_ops)) \ |
| 1305 | return -ENOMEM; \ |
| 1306 | } while (0) |
| 1307 | |
| 1308 | /* file operation */ |
| 1309 | #define DEBUGFS_READ_FUNC(name) \ |
| 1310 | static ssize_t iwl_dbgfs_##name##_read(struct file *file, \ |
| 1311 | char __user *user_buf, \ |
| 1312 | size_t count, loff_t *ppos); |
| 1313 | |
| 1314 | #define DEBUGFS_WRITE_FUNC(name) \ |
| 1315 | static ssize_t iwl_dbgfs_##name##_write(struct file *file, \ |
| 1316 | const char __user *user_buf, \ |
| 1317 | size_t count, loff_t *ppos); |
| 1318 | |
| 1319 | |
| 1320 | static int iwl_dbgfs_open_file_generic(struct inode *inode, struct file *file) |
| 1321 | { |
| 1322 | file->private_data = inode->i_private; |
| 1323 | return 0; |
| 1324 | } |
| 1325 | |
| 1326 | #define DEBUGFS_READ_FILE_OPS(name) \ |
| 1327 | DEBUGFS_READ_FUNC(name); \ |
| 1328 | static const struct file_operations iwl_dbgfs_##name##_ops = { \ |
| 1329 | .read = iwl_dbgfs_##name##_read, \ |
| 1330 | .open = iwl_dbgfs_open_file_generic, \ |
| 1331 | .llseek = generic_file_llseek, \ |
| 1332 | }; |
| 1333 | |
Emmanuel Grumbach | 16db88b | 2011-08-25 23:11:08 -0700 | [diff] [blame] | 1334 | #define DEBUGFS_WRITE_FILE_OPS(name) \ |
| 1335 | DEBUGFS_WRITE_FUNC(name); \ |
| 1336 | static const struct file_operations iwl_dbgfs_##name##_ops = { \ |
| 1337 | .write = iwl_dbgfs_##name##_write, \ |
| 1338 | .open = iwl_dbgfs_open_file_generic, \ |
| 1339 | .llseek = generic_file_llseek, \ |
| 1340 | }; |
| 1341 | |
Emmanuel Grumbach | 87e5666 | 2011-08-25 23:10:50 -0700 | [diff] [blame] | 1342 | #define DEBUGFS_READ_WRITE_FILE_OPS(name) \ |
| 1343 | DEBUGFS_READ_FUNC(name); \ |
| 1344 | DEBUGFS_WRITE_FUNC(name); \ |
| 1345 | static const struct file_operations iwl_dbgfs_##name##_ops = { \ |
| 1346 | .write = iwl_dbgfs_##name##_write, \ |
| 1347 | .read = iwl_dbgfs_##name##_read, \ |
| 1348 | .open = iwl_dbgfs_open_file_generic, \ |
| 1349 | .llseek = generic_file_llseek, \ |
| 1350 | }; |
| 1351 | |
| 1352 | static ssize_t iwl_dbgfs_traffic_log_read(struct file *file, |
| 1353 | char __user *user_buf, |
| 1354 | size_t count, loff_t *ppos) |
| 1355 | { |
Emmanuel Grumbach | 5a878bf | 2011-08-25 23:10:51 -0700 | [diff] [blame] | 1356 | struct iwl_trans *trans = file->private_data; |
| 1357 | struct iwl_priv *priv = priv(trans); |
Emmanuel Grumbach | 87e5666 | 2011-08-25 23:10:50 -0700 | [diff] [blame] | 1358 | int pos = 0, ofs = 0; |
| 1359 | int cnt = 0, entry; |
Emmanuel Grumbach | 5a878bf | 2011-08-25 23:10:51 -0700 | [diff] [blame] | 1360 | struct iwl_trans_pcie *trans_pcie = |
| 1361 | IWL_TRANS_GET_PCIE_TRANS(trans); |
Emmanuel Grumbach | 87e5666 | 2011-08-25 23:10:50 -0700 | [diff] [blame] | 1362 | struct iwl_tx_queue *txq; |
| 1363 | struct iwl_queue *q; |
Emmanuel Grumbach | 5a878bf | 2011-08-25 23:10:51 -0700 | [diff] [blame] | 1364 | struct iwl_rx_queue *rxq = &trans_pcie->rxq; |
Emmanuel Grumbach | 87e5666 | 2011-08-25 23:10:50 -0700 | [diff] [blame] | 1365 | char *buf; |
| 1366 | int bufsz = ((IWL_TRAFFIC_ENTRIES * IWL_TRAFFIC_ENTRY_SIZE * 64) * 2) + |
Emmanuel Grumbach | fd65693 | 2011-08-25 23:11:19 -0700 | [diff] [blame] | 1367 | (hw_params(trans).max_txq_num * 32 * 8) + 400; |
Emmanuel Grumbach | 87e5666 | 2011-08-25 23:10:50 -0700 | [diff] [blame] | 1368 | const u8 *ptr; |
| 1369 | ssize_t ret; |
| 1370 | |
| 1371 | if (!priv->txq) { |
Emmanuel Grumbach | 5a878bf | 2011-08-25 23:10:51 -0700 | [diff] [blame] | 1372 | IWL_ERR(trans, "txq not ready\n"); |
Emmanuel Grumbach | 87e5666 | 2011-08-25 23:10:50 -0700 | [diff] [blame] | 1373 | return -EAGAIN; |
| 1374 | } |
| 1375 | buf = kzalloc(bufsz, GFP_KERNEL); |
| 1376 | if (!buf) { |
Emmanuel Grumbach | 5a878bf | 2011-08-25 23:10:51 -0700 | [diff] [blame] | 1377 | IWL_ERR(trans, "Can not allocate buffer\n"); |
Emmanuel Grumbach | 87e5666 | 2011-08-25 23:10:50 -0700 | [diff] [blame] | 1378 | return -ENOMEM; |
| 1379 | } |
| 1380 | pos += scnprintf(buf + pos, bufsz - pos, "Tx Queue\n"); |
Emmanuel Grumbach | 5a878bf | 2011-08-25 23:10:51 -0700 | [diff] [blame] | 1381 | for (cnt = 0; cnt < hw_params(trans).max_txq_num; cnt++) { |
Emmanuel Grumbach | 87e5666 | 2011-08-25 23:10:50 -0700 | [diff] [blame] | 1382 | txq = &priv->txq[cnt]; |
| 1383 | q = &txq->q; |
| 1384 | pos += scnprintf(buf + pos, bufsz - pos, |
| 1385 | "q[%d]: read_ptr: %u, write_ptr: %u\n", |
| 1386 | cnt, q->read_ptr, q->write_ptr); |
| 1387 | } |
| 1388 | if (priv->tx_traffic && |
Emmanuel Grumbach | 5a878bf | 2011-08-25 23:10:51 -0700 | [diff] [blame] | 1389 | (iwl_get_debug_level(trans->shrd) & IWL_DL_TX)) { |
Emmanuel Grumbach | 87e5666 | 2011-08-25 23:10:50 -0700 | [diff] [blame] | 1390 | ptr = priv->tx_traffic; |
| 1391 | pos += scnprintf(buf + pos, bufsz - pos, |
Emmanuel Grumbach | 5a878bf | 2011-08-25 23:10:51 -0700 | [diff] [blame] | 1392 | "Tx Traffic idx: %u\n", priv->tx_traffic_idx); |
Emmanuel Grumbach | 87e5666 | 2011-08-25 23:10:50 -0700 | [diff] [blame] | 1393 | for (cnt = 0, ofs = 0; cnt < IWL_TRAFFIC_ENTRIES; cnt++) { |
| 1394 | for (entry = 0; entry < IWL_TRAFFIC_ENTRY_SIZE / 16; |
| 1395 | entry++, ofs += 16) { |
| 1396 | pos += scnprintf(buf + pos, bufsz - pos, |
| 1397 | "0x%.4x ", ofs); |
| 1398 | hex_dump_to_buffer(ptr + ofs, 16, 16, 2, |
| 1399 | buf + pos, bufsz - pos, 0); |
| 1400 | pos += strlen(buf + pos); |
| 1401 | if (bufsz - pos > 0) |
| 1402 | buf[pos++] = '\n'; |
| 1403 | } |
| 1404 | } |
| 1405 | } |
| 1406 | |
| 1407 | pos += scnprintf(buf + pos, bufsz - pos, "Rx Queue\n"); |
| 1408 | pos += scnprintf(buf + pos, bufsz - pos, |
| 1409 | "read: %u, write: %u\n", |
| 1410 | rxq->read, rxq->write); |
| 1411 | |
| 1412 | if (priv->rx_traffic && |
Emmanuel Grumbach | 5a878bf | 2011-08-25 23:10:51 -0700 | [diff] [blame] | 1413 | (iwl_get_debug_level(trans->shrd) & IWL_DL_RX)) { |
Emmanuel Grumbach | 87e5666 | 2011-08-25 23:10:50 -0700 | [diff] [blame] | 1414 | ptr = priv->rx_traffic; |
| 1415 | pos += scnprintf(buf + pos, bufsz - pos, |
Emmanuel Grumbach | 5a878bf | 2011-08-25 23:10:51 -0700 | [diff] [blame] | 1416 | "Rx Traffic idx: %u\n", priv->rx_traffic_idx); |
Emmanuel Grumbach | 87e5666 | 2011-08-25 23:10:50 -0700 | [diff] [blame] | 1417 | for (cnt = 0, ofs = 0; cnt < IWL_TRAFFIC_ENTRIES; cnt++) { |
| 1418 | for (entry = 0; entry < IWL_TRAFFIC_ENTRY_SIZE / 16; |
| 1419 | entry++, ofs += 16) { |
| 1420 | pos += scnprintf(buf + pos, bufsz - pos, |
| 1421 | "0x%.4x ", ofs); |
| 1422 | hex_dump_to_buffer(ptr + ofs, 16, 16, 2, |
| 1423 | buf + pos, bufsz - pos, 0); |
| 1424 | pos += strlen(buf + pos); |
| 1425 | if (bufsz - pos > 0) |
| 1426 | buf[pos++] = '\n'; |
| 1427 | } |
| 1428 | } |
| 1429 | } |
| 1430 | |
| 1431 | ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos); |
| 1432 | kfree(buf); |
| 1433 | return ret; |
| 1434 | } |
| 1435 | |
| 1436 | static ssize_t iwl_dbgfs_traffic_log_write(struct file *file, |
| 1437 | const char __user *user_buf, |
| 1438 | size_t count, loff_t *ppos) |
| 1439 | { |
Emmanuel Grumbach | 5a878bf | 2011-08-25 23:10:51 -0700 | [diff] [blame] | 1440 | struct iwl_trans *trans = file->private_data; |
Emmanuel Grumbach | 87e5666 | 2011-08-25 23:10:50 -0700 | [diff] [blame] | 1441 | char buf[8]; |
| 1442 | int buf_size; |
| 1443 | int traffic_log; |
| 1444 | |
| 1445 | memset(buf, 0, sizeof(buf)); |
| 1446 | buf_size = min(count, sizeof(buf) - 1); |
| 1447 | if (copy_from_user(buf, user_buf, buf_size)) |
| 1448 | return -EFAULT; |
| 1449 | if (sscanf(buf, "%d", &traffic_log) != 1) |
| 1450 | return -EFAULT; |
| 1451 | if (traffic_log == 0) |
Emmanuel Grumbach | 5a878bf | 2011-08-25 23:10:51 -0700 | [diff] [blame] | 1452 | iwl_reset_traffic_log(priv(trans)); |
Emmanuel Grumbach | 87e5666 | 2011-08-25 23:10:50 -0700 | [diff] [blame] | 1453 | |
| 1454 | return count; |
| 1455 | } |
| 1456 | |
| 1457 | static ssize_t iwl_dbgfs_tx_queue_read(struct file *file, |
| 1458 | char __user *user_buf, |
| 1459 | size_t count, loff_t *ppos) { |
| 1460 | |
Emmanuel Grumbach | 5a878bf | 2011-08-25 23:10:51 -0700 | [diff] [blame] | 1461 | struct iwl_trans *trans = file->private_data; |
| 1462 | struct iwl_priv *priv = priv(trans); |
Emmanuel Grumbach | 87e5666 | 2011-08-25 23:10:50 -0700 | [diff] [blame] | 1463 | struct iwl_tx_queue *txq; |
| 1464 | struct iwl_queue *q; |
| 1465 | char *buf; |
| 1466 | int pos = 0; |
| 1467 | int cnt; |
| 1468 | int ret; |
Emmanuel Grumbach | fd65693 | 2011-08-25 23:11:19 -0700 | [diff] [blame] | 1469 | const size_t bufsz = sizeof(char) * 64 * hw_params(trans).max_txq_num; |
Emmanuel Grumbach | 87e5666 | 2011-08-25 23:10:50 -0700 | [diff] [blame] | 1470 | |
| 1471 | if (!priv->txq) { |
| 1472 | IWL_ERR(priv, "txq not ready\n"); |
| 1473 | return -EAGAIN; |
| 1474 | } |
| 1475 | buf = kzalloc(bufsz, GFP_KERNEL); |
| 1476 | if (!buf) |
| 1477 | return -ENOMEM; |
| 1478 | |
Emmanuel Grumbach | 5a878bf | 2011-08-25 23:10:51 -0700 | [diff] [blame] | 1479 | for (cnt = 0; cnt < hw_params(trans).max_txq_num; cnt++) { |
Emmanuel Grumbach | 87e5666 | 2011-08-25 23:10:50 -0700 | [diff] [blame] | 1480 | txq = &priv->txq[cnt]; |
| 1481 | q = &txq->q; |
| 1482 | pos += scnprintf(buf + pos, bufsz - pos, |
| 1483 | "hwq %.2d: read=%u write=%u stop=%d" |
| 1484 | " swq_id=%#.2x (ac %d/hwq %d)\n", |
| 1485 | cnt, q->read_ptr, q->write_ptr, |
| 1486 | !!test_bit(cnt, priv->queue_stopped), |
| 1487 | txq->swq_id, txq->swq_id & 3, |
| 1488 | (txq->swq_id >> 2) & 0x1f); |
| 1489 | if (cnt >= 4) |
| 1490 | continue; |
| 1491 | /* for the ACs, display the stop count too */ |
| 1492 | pos += scnprintf(buf + pos, bufsz - pos, |
| 1493 | " stop-count: %d\n", |
| 1494 | atomic_read(&priv->queue_stop_count[cnt])); |
| 1495 | } |
| 1496 | ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos); |
| 1497 | kfree(buf); |
| 1498 | return ret; |
| 1499 | } |
| 1500 | |
| 1501 | static ssize_t iwl_dbgfs_rx_queue_read(struct file *file, |
| 1502 | char __user *user_buf, |
| 1503 | size_t count, loff_t *ppos) { |
Emmanuel Grumbach | 5a878bf | 2011-08-25 23:10:51 -0700 | [diff] [blame] | 1504 | struct iwl_trans *trans = file->private_data; |
| 1505 | struct iwl_trans_pcie *trans_pcie = |
| 1506 | IWL_TRANS_GET_PCIE_TRANS(trans); |
| 1507 | struct iwl_rx_queue *rxq = &trans_pcie->rxq; |
Emmanuel Grumbach | 87e5666 | 2011-08-25 23:10:50 -0700 | [diff] [blame] | 1508 | char buf[256]; |
| 1509 | int pos = 0; |
| 1510 | const size_t bufsz = sizeof(buf); |
| 1511 | |
| 1512 | pos += scnprintf(buf + pos, bufsz - pos, "read: %u\n", |
| 1513 | rxq->read); |
| 1514 | pos += scnprintf(buf + pos, bufsz - pos, "write: %u\n", |
| 1515 | rxq->write); |
| 1516 | pos += scnprintf(buf + pos, bufsz - pos, "free_count: %u\n", |
| 1517 | rxq->free_count); |
| 1518 | if (rxq->rb_stts) { |
| 1519 | pos += scnprintf(buf + pos, bufsz - pos, "closed_rb_num: %u\n", |
| 1520 | le16_to_cpu(rxq->rb_stts->closed_rb_num) & 0x0FFF); |
| 1521 | } else { |
| 1522 | pos += scnprintf(buf + pos, bufsz - pos, |
| 1523 | "closed_rb_num: Not Allocated\n"); |
| 1524 | } |
| 1525 | return simple_read_from_buffer(user_buf, count, ppos, buf, pos); |
| 1526 | } |
| 1527 | |
Emmanuel Grumbach | 7ff9470 | 2011-08-25 23:10:54 -0700 | [diff] [blame] | 1528 | static ssize_t iwl_dbgfs_log_event_read(struct file *file, |
| 1529 | char __user *user_buf, |
| 1530 | size_t count, loff_t *ppos) |
| 1531 | { |
| 1532 | struct iwl_trans *trans = file->private_data; |
| 1533 | char *buf; |
| 1534 | int pos = 0; |
| 1535 | ssize_t ret = -ENOMEM; |
| 1536 | |
Emmanuel Grumbach | 6bb7884 | 2011-08-25 23:11:09 -0700 | [diff] [blame] | 1537 | ret = pos = iwl_dump_nic_event_log(trans, true, &buf, true); |
Emmanuel Grumbach | 7ff9470 | 2011-08-25 23:10:54 -0700 | [diff] [blame] | 1538 | if (buf) { |
| 1539 | ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos); |
| 1540 | kfree(buf); |
| 1541 | } |
| 1542 | return ret; |
| 1543 | } |
| 1544 | |
| 1545 | static ssize_t iwl_dbgfs_log_event_write(struct file *file, |
| 1546 | const char __user *user_buf, |
| 1547 | size_t count, loff_t *ppos) |
| 1548 | { |
| 1549 | struct iwl_trans *trans = file->private_data; |
| 1550 | u32 event_log_flag; |
| 1551 | char buf[8]; |
| 1552 | int buf_size; |
| 1553 | |
| 1554 | memset(buf, 0, sizeof(buf)); |
| 1555 | buf_size = min(count, sizeof(buf) - 1); |
| 1556 | if (copy_from_user(buf, user_buf, buf_size)) |
| 1557 | return -EFAULT; |
| 1558 | if (sscanf(buf, "%d", &event_log_flag) != 1) |
| 1559 | return -EFAULT; |
| 1560 | if (event_log_flag == 1) |
Emmanuel Grumbach | 6bb7884 | 2011-08-25 23:11:09 -0700 | [diff] [blame] | 1561 | iwl_dump_nic_event_log(trans, true, NULL, false); |
Emmanuel Grumbach | 7ff9470 | 2011-08-25 23:10:54 -0700 | [diff] [blame] | 1562 | |
| 1563 | return count; |
| 1564 | } |
| 1565 | |
Emmanuel Grumbach | 1f7b617 | 2011-08-25 23:10:59 -0700 | [diff] [blame] | 1566 | static ssize_t iwl_dbgfs_interrupt_read(struct file *file, |
| 1567 | char __user *user_buf, |
| 1568 | size_t count, loff_t *ppos) { |
| 1569 | |
| 1570 | struct iwl_trans *trans = file->private_data; |
| 1571 | struct iwl_trans_pcie *trans_pcie = |
| 1572 | IWL_TRANS_GET_PCIE_TRANS(trans); |
| 1573 | struct isr_statistics *isr_stats = &trans_pcie->isr_stats; |
| 1574 | |
| 1575 | int pos = 0; |
| 1576 | char *buf; |
| 1577 | int bufsz = 24 * 64; /* 24 items * 64 char per item */ |
| 1578 | ssize_t ret; |
| 1579 | |
| 1580 | buf = kzalloc(bufsz, GFP_KERNEL); |
| 1581 | if (!buf) { |
| 1582 | IWL_ERR(trans, "Can not allocate Buffer\n"); |
| 1583 | return -ENOMEM; |
| 1584 | } |
| 1585 | |
| 1586 | pos += scnprintf(buf + pos, bufsz - pos, |
| 1587 | "Interrupt Statistics Report:\n"); |
| 1588 | |
| 1589 | pos += scnprintf(buf + pos, bufsz - pos, "HW Error:\t\t\t %u\n", |
| 1590 | isr_stats->hw); |
| 1591 | pos += scnprintf(buf + pos, bufsz - pos, "SW Error:\t\t\t %u\n", |
| 1592 | isr_stats->sw); |
| 1593 | if (isr_stats->sw || isr_stats->hw) { |
| 1594 | pos += scnprintf(buf + pos, bufsz - pos, |
| 1595 | "\tLast Restarting Code: 0x%X\n", |
| 1596 | isr_stats->err_code); |
| 1597 | } |
| 1598 | #ifdef CONFIG_IWLWIFI_DEBUG |
| 1599 | pos += scnprintf(buf + pos, bufsz - pos, "Frame transmitted:\t\t %u\n", |
| 1600 | isr_stats->sch); |
| 1601 | pos += scnprintf(buf + pos, bufsz - pos, "Alive interrupt:\t\t %u\n", |
| 1602 | isr_stats->alive); |
| 1603 | #endif |
| 1604 | pos += scnprintf(buf + pos, bufsz - pos, |
| 1605 | "HW RF KILL switch toggled:\t %u\n", isr_stats->rfkill); |
| 1606 | |
| 1607 | pos += scnprintf(buf + pos, bufsz - pos, "CT KILL:\t\t\t %u\n", |
| 1608 | isr_stats->ctkill); |
| 1609 | |
| 1610 | pos += scnprintf(buf + pos, bufsz - pos, "Wakeup Interrupt:\t\t %u\n", |
| 1611 | isr_stats->wakeup); |
| 1612 | |
| 1613 | pos += scnprintf(buf + pos, bufsz - pos, |
| 1614 | "Rx command responses:\t\t %u\n", isr_stats->rx); |
| 1615 | |
| 1616 | pos += scnprintf(buf + pos, bufsz - pos, "Tx/FH interrupt:\t\t %u\n", |
| 1617 | isr_stats->tx); |
| 1618 | |
| 1619 | pos += scnprintf(buf + pos, bufsz - pos, "Unexpected INTA:\t\t %u\n", |
| 1620 | isr_stats->unhandled); |
| 1621 | |
| 1622 | ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos); |
| 1623 | kfree(buf); |
| 1624 | return ret; |
| 1625 | } |
| 1626 | |
| 1627 | static ssize_t iwl_dbgfs_interrupt_write(struct file *file, |
| 1628 | const char __user *user_buf, |
| 1629 | size_t count, loff_t *ppos) |
| 1630 | { |
| 1631 | struct iwl_trans *trans = file->private_data; |
| 1632 | struct iwl_trans_pcie *trans_pcie = |
| 1633 | IWL_TRANS_GET_PCIE_TRANS(trans); |
| 1634 | struct isr_statistics *isr_stats = &trans_pcie->isr_stats; |
| 1635 | |
| 1636 | char buf[8]; |
| 1637 | int buf_size; |
| 1638 | u32 reset_flag; |
| 1639 | |
| 1640 | memset(buf, 0, sizeof(buf)); |
| 1641 | buf_size = min(count, sizeof(buf) - 1); |
| 1642 | if (copy_from_user(buf, user_buf, buf_size)) |
| 1643 | return -EFAULT; |
| 1644 | if (sscanf(buf, "%x", &reset_flag) != 1) |
| 1645 | return -EFAULT; |
| 1646 | if (reset_flag == 0) |
| 1647 | memset(isr_stats, 0, sizeof(*isr_stats)); |
| 1648 | |
| 1649 | return count; |
| 1650 | } |
| 1651 | |
Emmanuel Grumbach | 16db88b | 2011-08-25 23:11:08 -0700 | [diff] [blame] | 1652 | static const char *get_csr_string(int cmd) |
| 1653 | { |
| 1654 | switch (cmd) { |
| 1655 | IWL_CMD(CSR_HW_IF_CONFIG_REG); |
| 1656 | IWL_CMD(CSR_INT_COALESCING); |
| 1657 | IWL_CMD(CSR_INT); |
| 1658 | IWL_CMD(CSR_INT_MASK); |
| 1659 | IWL_CMD(CSR_FH_INT_STATUS); |
| 1660 | IWL_CMD(CSR_GPIO_IN); |
| 1661 | IWL_CMD(CSR_RESET); |
| 1662 | IWL_CMD(CSR_GP_CNTRL); |
| 1663 | IWL_CMD(CSR_HW_REV); |
| 1664 | IWL_CMD(CSR_EEPROM_REG); |
| 1665 | IWL_CMD(CSR_EEPROM_GP); |
| 1666 | IWL_CMD(CSR_OTP_GP_REG); |
| 1667 | IWL_CMD(CSR_GIO_REG); |
| 1668 | IWL_CMD(CSR_GP_UCODE_REG); |
| 1669 | IWL_CMD(CSR_GP_DRIVER_REG); |
| 1670 | IWL_CMD(CSR_UCODE_DRV_GP1); |
| 1671 | IWL_CMD(CSR_UCODE_DRV_GP2); |
| 1672 | IWL_CMD(CSR_LED_REG); |
| 1673 | IWL_CMD(CSR_DRAM_INT_TBL_REG); |
| 1674 | IWL_CMD(CSR_GIO_CHICKEN_BITS); |
| 1675 | IWL_CMD(CSR_ANA_PLL_CFG); |
| 1676 | IWL_CMD(CSR_HW_REV_WA_REG); |
| 1677 | IWL_CMD(CSR_DBG_HPET_MEM_REG); |
| 1678 | default: |
| 1679 | return "UNKNOWN"; |
| 1680 | } |
| 1681 | } |
| 1682 | |
| 1683 | void iwl_dump_csr(struct iwl_trans *trans) |
| 1684 | { |
| 1685 | int i; |
| 1686 | static const u32 csr_tbl[] = { |
| 1687 | CSR_HW_IF_CONFIG_REG, |
| 1688 | CSR_INT_COALESCING, |
| 1689 | CSR_INT, |
| 1690 | CSR_INT_MASK, |
| 1691 | CSR_FH_INT_STATUS, |
| 1692 | CSR_GPIO_IN, |
| 1693 | CSR_RESET, |
| 1694 | CSR_GP_CNTRL, |
| 1695 | CSR_HW_REV, |
| 1696 | CSR_EEPROM_REG, |
| 1697 | CSR_EEPROM_GP, |
| 1698 | CSR_OTP_GP_REG, |
| 1699 | CSR_GIO_REG, |
| 1700 | CSR_GP_UCODE_REG, |
| 1701 | CSR_GP_DRIVER_REG, |
| 1702 | CSR_UCODE_DRV_GP1, |
| 1703 | CSR_UCODE_DRV_GP2, |
| 1704 | CSR_LED_REG, |
| 1705 | CSR_DRAM_INT_TBL_REG, |
| 1706 | CSR_GIO_CHICKEN_BITS, |
| 1707 | CSR_ANA_PLL_CFG, |
| 1708 | CSR_HW_REV_WA_REG, |
| 1709 | CSR_DBG_HPET_MEM_REG |
| 1710 | }; |
| 1711 | IWL_ERR(trans, "CSR values:\n"); |
| 1712 | IWL_ERR(trans, "(2nd byte of CSR_INT_COALESCING is " |
| 1713 | "CSR_INT_PERIODIC_REG)\n"); |
| 1714 | for (i = 0; i < ARRAY_SIZE(csr_tbl); i++) { |
| 1715 | IWL_ERR(trans, " %25s: 0X%08x\n", |
| 1716 | get_csr_string(csr_tbl[i]), |
Emmanuel Grumbach | 83ed901 | 2011-08-25 23:11:14 -0700 | [diff] [blame] | 1717 | iwl_read32(bus(trans), csr_tbl[i])); |
Emmanuel Grumbach | 16db88b | 2011-08-25 23:11:08 -0700 | [diff] [blame] | 1718 | } |
| 1719 | } |
| 1720 | |
| 1721 | static ssize_t iwl_dbgfs_csr_write(struct file *file, |
| 1722 | const char __user *user_buf, |
| 1723 | size_t count, loff_t *ppos) |
| 1724 | { |
| 1725 | struct iwl_trans *trans = file->private_data; |
| 1726 | char buf[8]; |
| 1727 | int buf_size; |
| 1728 | int csr; |
| 1729 | |
| 1730 | memset(buf, 0, sizeof(buf)); |
| 1731 | buf_size = min(count, sizeof(buf) - 1); |
| 1732 | if (copy_from_user(buf, user_buf, buf_size)) |
| 1733 | return -EFAULT; |
| 1734 | if (sscanf(buf, "%d", &csr) != 1) |
| 1735 | return -EFAULT; |
| 1736 | |
| 1737 | iwl_dump_csr(trans); |
| 1738 | |
| 1739 | return count; |
| 1740 | } |
| 1741 | |
| 1742 | static const char *get_fh_string(int cmd) |
| 1743 | { |
| 1744 | switch (cmd) { |
| 1745 | IWL_CMD(FH_RSCSR_CHNL0_STTS_WPTR_REG); |
| 1746 | IWL_CMD(FH_RSCSR_CHNL0_RBDCB_BASE_REG); |
| 1747 | IWL_CMD(FH_RSCSR_CHNL0_WPTR); |
| 1748 | IWL_CMD(FH_MEM_RCSR_CHNL0_CONFIG_REG); |
| 1749 | IWL_CMD(FH_MEM_RSSR_SHARED_CTRL_REG); |
| 1750 | IWL_CMD(FH_MEM_RSSR_RX_STATUS_REG); |
| 1751 | IWL_CMD(FH_MEM_RSSR_RX_ENABLE_ERR_IRQ2DRV); |
| 1752 | IWL_CMD(FH_TSSR_TX_STATUS_REG); |
| 1753 | IWL_CMD(FH_TSSR_TX_ERROR_REG); |
| 1754 | default: |
| 1755 | return "UNKNOWN"; |
| 1756 | } |
| 1757 | } |
| 1758 | |
| 1759 | int iwl_dump_fh(struct iwl_trans *trans, char **buf, bool display) |
| 1760 | { |
| 1761 | int i; |
| 1762 | #ifdef CONFIG_IWLWIFI_DEBUG |
| 1763 | int pos = 0; |
| 1764 | size_t bufsz = 0; |
| 1765 | #endif |
| 1766 | static const u32 fh_tbl[] = { |
| 1767 | FH_RSCSR_CHNL0_STTS_WPTR_REG, |
| 1768 | FH_RSCSR_CHNL0_RBDCB_BASE_REG, |
| 1769 | FH_RSCSR_CHNL0_WPTR, |
| 1770 | FH_MEM_RCSR_CHNL0_CONFIG_REG, |
| 1771 | FH_MEM_RSSR_SHARED_CTRL_REG, |
| 1772 | FH_MEM_RSSR_RX_STATUS_REG, |
| 1773 | FH_MEM_RSSR_RX_ENABLE_ERR_IRQ2DRV, |
| 1774 | FH_TSSR_TX_STATUS_REG, |
| 1775 | FH_TSSR_TX_ERROR_REG |
| 1776 | }; |
| 1777 | #ifdef CONFIG_IWLWIFI_DEBUG |
| 1778 | if (display) { |
| 1779 | bufsz = ARRAY_SIZE(fh_tbl) * 48 + 40; |
| 1780 | *buf = kmalloc(bufsz, GFP_KERNEL); |
| 1781 | if (!*buf) |
| 1782 | return -ENOMEM; |
| 1783 | pos += scnprintf(*buf + pos, bufsz - pos, |
| 1784 | "FH register values:\n"); |
| 1785 | for (i = 0; i < ARRAY_SIZE(fh_tbl); i++) { |
| 1786 | pos += scnprintf(*buf + pos, bufsz - pos, |
| 1787 | " %34s: 0X%08x\n", |
| 1788 | get_fh_string(fh_tbl[i]), |
Emmanuel Grumbach | 83ed901 | 2011-08-25 23:11:14 -0700 | [diff] [blame] | 1789 | iwl_read_direct32(bus(trans), fh_tbl[i])); |
Emmanuel Grumbach | 16db88b | 2011-08-25 23:11:08 -0700 | [diff] [blame] | 1790 | } |
| 1791 | return pos; |
| 1792 | } |
| 1793 | #endif |
| 1794 | IWL_ERR(trans, "FH register values:\n"); |
| 1795 | for (i = 0; i < ARRAY_SIZE(fh_tbl); i++) { |
| 1796 | IWL_ERR(trans, " %34s: 0X%08x\n", |
| 1797 | get_fh_string(fh_tbl[i]), |
Emmanuel Grumbach | 83ed901 | 2011-08-25 23:11:14 -0700 | [diff] [blame] | 1798 | iwl_read_direct32(bus(trans), fh_tbl[i])); |
Emmanuel Grumbach | 16db88b | 2011-08-25 23:11:08 -0700 | [diff] [blame] | 1799 | } |
| 1800 | return 0; |
| 1801 | } |
| 1802 | |
| 1803 | static ssize_t iwl_dbgfs_fh_reg_read(struct file *file, |
| 1804 | char __user *user_buf, |
| 1805 | size_t count, loff_t *ppos) |
| 1806 | { |
| 1807 | struct iwl_trans *trans = file->private_data; |
| 1808 | char *buf; |
| 1809 | int pos = 0; |
| 1810 | ssize_t ret = -EFAULT; |
| 1811 | |
| 1812 | ret = pos = iwl_dump_fh(trans, &buf, true); |
| 1813 | if (buf) { |
| 1814 | ret = simple_read_from_buffer(user_buf, |
| 1815 | count, ppos, buf, pos); |
| 1816 | kfree(buf); |
| 1817 | } |
| 1818 | |
| 1819 | return ret; |
| 1820 | } |
| 1821 | |
Emmanuel Grumbach | 87e5666 | 2011-08-25 23:10:50 -0700 | [diff] [blame] | 1822 | DEBUGFS_READ_WRITE_FILE_OPS(traffic_log); |
Emmanuel Grumbach | 7ff9470 | 2011-08-25 23:10:54 -0700 | [diff] [blame] | 1823 | DEBUGFS_READ_WRITE_FILE_OPS(log_event); |
Emmanuel Grumbach | 1f7b617 | 2011-08-25 23:10:59 -0700 | [diff] [blame] | 1824 | DEBUGFS_READ_WRITE_FILE_OPS(interrupt); |
Emmanuel Grumbach | 16db88b | 2011-08-25 23:11:08 -0700 | [diff] [blame] | 1825 | DEBUGFS_READ_FILE_OPS(fh_reg); |
Emmanuel Grumbach | 87e5666 | 2011-08-25 23:10:50 -0700 | [diff] [blame] | 1826 | DEBUGFS_READ_FILE_OPS(rx_queue); |
| 1827 | DEBUGFS_READ_FILE_OPS(tx_queue); |
Emmanuel Grumbach | 16db88b | 2011-08-25 23:11:08 -0700 | [diff] [blame] | 1828 | DEBUGFS_WRITE_FILE_OPS(csr); |
Emmanuel Grumbach | 87e5666 | 2011-08-25 23:10:50 -0700 | [diff] [blame] | 1829 | |
| 1830 | /* |
| 1831 | * Create the debugfs files and directories |
| 1832 | * |
| 1833 | */ |
| 1834 | static int iwl_trans_pcie_dbgfs_register(struct iwl_trans *trans, |
| 1835 | struct dentry *dir) |
| 1836 | { |
Emmanuel Grumbach | 87e5666 | 2011-08-25 23:10:50 -0700 | [diff] [blame] | 1837 | DEBUGFS_ADD_FILE(traffic_log, dir, S_IWUSR | S_IRUSR); |
| 1838 | DEBUGFS_ADD_FILE(rx_queue, dir, S_IRUSR); |
| 1839 | DEBUGFS_ADD_FILE(tx_queue, dir, S_IRUSR); |
Emmanuel Grumbach | 7ff9470 | 2011-08-25 23:10:54 -0700 | [diff] [blame] | 1840 | DEBUGFS_ADD_FILE(log_event, dir, S_IWUSR | S_IRUSR); |
Emmanuel Grumbach | 1f7b617 | 2011-08-25 23:10:59 -0700 | [diff] [blame] | 1841 | DEBUGFS_ADD_FILE(interrupt, dir, S_IWUSR | S_IRUSR); |
Emmanuel Grumbach | 16db88b | 2011-08-25 23:11:08 -0700 | [diff] [blame] | 1842 | DEBUGFS_ADD_FILE(csr, dir, S_IWUSR); |
| 1843 | DEBUGFS_ADD_FILE(fh_reg, dir, S_IRUSR); |
Emmanuel Grumbach | 87e5666 | 2011-08-25 23:10:50 -0700 | [diff] [blame] | 1844 | return 0; |
| 1845 | } |
| 1846 | #else |
| 1847 | static int iwl_trans_pcie_dbgfs_register(struct iwl_trans *trans, |
| 1848 | struct dentry *dir) |
| 1849 | { return 0; } |
| 1850 | |
| 1851 | #endif /*CONFIG_IWLWIFI_DEBUGFS */ |
| 1852 | |
Emmanuel Grumbach | e6bb4c9 | 2011-08-25 23:10:48 -0700 | [diff] [blame] | 1853 | const struct iwl_trans_ops trans_ops_pcie = { |
| 1854 | .alloc = iwl_trans_pcie_alloc, |
| 1855 | .request_irq = iwl_trans_pcie_request_irq, |
| 1856 | .start_device = iwl_trans_pcie_start_device, |
| 1857 | .prepare_card_hw = iwl_trans_pcie_prepare_card_hw, |
| 1858 | .stop_device = iwl_trans_pcie_stop_device, |
| 1859 | |
| 1860 | .tx_start = iwl_trans_pcie_tx_start, |
| 1861 | |
Emmanuel Grumbach | e6bb4c9 | 2011-08-25 23:10:48 -0700 | [diff] [blame] | 1862 | .send_cmd = iwl_trans_pcie_send_cmd, |
| 1863 | .send_cmd_pdu = iwl_trans_pcie_send_cmd_pdu, |
| 1864 | |
| 1865 | .get_tx_cmd = iwl_trans_pcie_get_tx_cmd, |
| 1866 | .tx = iwl_trans_pcie_tx, |
Emmanuel Grumbach | a0eaad7 | 2011-08-25 23:11:00 -0700 | [diff] [blame] | 1867 | .reclaim = iwl_trans_pcie_reclaim, |
Emmanuel Grumbach | e6bb4c9 | 2011-08-25 23:10:48 -0700 | [diff] [blame] | 1868 | |
| 1869 | .txq_agg_disable = iwl_trans_pcie_txq_agg_disable, |
| 1870 | .txq_agg_setup = iwl_trans_pcie_txq_agg_setup, |
| 1871 | |
| 1872 | .kick_nic = iwl_trans_pcie_kick_nic, |
| 1873 | |
Emmanuel Grumbach | e6bb4c9 | 2011-08-25 23:10:48 -0700 | [diff] [blame] | 1874 | .free = iwl_trans_pcie_free, |
Emmanuel Grumbach | 87e5666 | 2011-08-25 23:10:50 -0700 | [diff] [blame] | 1875 | |
| 1876 | .dbgfs_register = iwl_trans_pcie_dbgfs_register, |
Emmanuel Grumbach | 57210f7 | 2011-08-25 23:10:52 -0700 | [diff] [blame] | 1877 | .suspend = iwl_trans_pcie_suspend, |
| 1878 | .resume = iwl_trans_pcie_resume, |
Emmanuel Grumbach | e6bb4c9 | 2011-08-25 23:10:48 -0700 | [diff] [blame] | 1879 | }; |
| 1880 | |