1e705c121SKalle Valo /****************************************************************************** 2e705c121SKalle Valo * 3e705c121SKalle Valo * This file is provided under a dual BSD/GPLv2 license. When using or 4e705c121SKalle Valo * redistributing this file, you may do so under either license. 5e705c121SKalle Valo * 6e705c121SKalle Valo * GPL LICENSE SUMMARY 7e705c121SKalle Valo * 8e705c121SKalle Valo * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH 9afb84431SEmmanuel Grumbach * Copyright(c) 2016 - 2017 Intel Deutschland GmbH 10771db3a1SHaim Dreyfuss * Copyright(c) 2007 - 2015, 2018 - 2020 Intel Corporation 11e705c121SKalle Valo * 12e705c121SKalle Valo * This program is free software; you can redistribute it and/or modify 13e705c121SKalle Valo * it under the terms of version 2 of the GNU General Public License as 14e705c121SKalle Valo * published by the Free Software Foundation. 15e705c121SKalle Valo * 16e705c121SKalle Valo * This program is distributed in the hope that it will be useful, but 17e705c121SKalle Valo * WITHOUT ANY WARRANTY; without even the implied warranty of 18e705c121SKalle Valo * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 19e705c121SKalle Valo * General Public License for more details. 20e705c121SKalle Valo * 21e705c121SKalle Valo * The full GNU General Public License is included in this distribution 22e705c121SKalle Valo * in the file called COPYING. 23e705c121SKalle Valo * 24e705c121SKalle Valo * Contact Information: 25cb2f8277SEmmanuel Grumbach * Intel Linux Wireless <linuxwifi@intel.com> 26e705c121SKalle Valo * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 27e705c121SKalle Valo * 28e705c121SKalle Valo * BSD LICENSE 29e705c121SKalle Valo * 30e705c121SKalle Valo * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH 31afb84431SEmmanuel Grumbach * Copyright(c) 2016 - 2017 Intel Deutschland GmbH 32771db3a1SHaim Dreyfuss * Copyright(c) 2007 - 2015, 2018 - 2020 Intel Corporation 33e705c121SKalle Valo * All rights reserved. 34e705c121SKalle Valo * 35e705c121SKalle Valo * Redistribution and use in source and binary forms, with or without 36e705c121SKalle Valo * modification, are permitted provided that the following conditions 37e705c121SKalle Valo * are met: 38e705c121SKalle Valo * 39e705c121SKalle Valo * * Redistributions of source code must retain the above copyright 40e705c121SKalle Valo * notice, this list of conditions and the following disclaimer. 41e705c121SKalle Valo * * Redistributions in binary form must reproduce the above copyright 42e705c121SKalle Valo * notice, this list of conditions and the following disclaimer in 43e705c121SKalle Valo * the documentation and/or other materials provided with the 44e705c121SKalle Valo * distribution. 45e705c121SKalle Valo * * Neither the name Intel Corporation nor the names of its 46e705c121SKalle Valo * contributors may be used to endorse or promote products derived 47e705c121SKalle Valo * from this software without specific prior written permission. 48e705c121SKalle Valo * 49e705c121SKalle Valo * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 50e705c121SKalle Valo * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 51e705c121SKalle Valo * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 52e705c121SKalle Valo * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 53e705c121SKalle Valo * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 54e705c121SKalle Valo * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 55e705c121SKalle Valo * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 56e705c121SKalle Valo * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 57e705c121SKalle Valo * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 58e705c121SKalle Valo * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 59e705c121SKalle Valo * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 60e705c121SKalle Valo * 61e705c121SKalle Valo *****************************************************************************/ 62e705c121SKalle Valo #include <linux/pci.h> 63e705c121SKalle Valo #include <linux/interrupt.h> 64e705c121SKalle Valo #include <linux/debugfs.h> 65e705c121SKalle Valo #include <linux/sched.h> 66e705c121SKalle Valo #include <linux/bitops.h> 67e705c121SKalle Valo #include <linux/gfp.h> 68e705c121SKalle Valo #include <linux/vmalloc.h> 6949564a80SLuca Coelho #include <linux/module.h> 70f7805b33SLior Cohen #include <linux/wait.h> 71df67a1beSJohannes Berg #include <linux/seq_file.h> 72e705c121SKalle Valo 73e705c121SKalle Valo #include "iwl-drv.h" 74e705c121SKalle Valo #include "iwl-trans.h" 75e705c121SKalle Valo #include "iwl-csr.h" 76e705c121SKalle Valo #include "iwl-prph.h" 77e705c121SKalle Valo #include "iwl-scd.h" 78e705c121SKalle Valo #include "iwl-agn-hw.h" 79d962f9b1SJohannes Berg #include "fw/error-dump.h" 80520f03eaSShahar S Matityahu #include "fw/dbg.h" 81a89c72ffSJohannes Berg #include "fw/api/tx.h" 82e705c121SKalle Valo #include "internal.h" 83e705c121SKalle Valo #include "iwl-fh.h" 84e705c121SKalle Valo 85e705c121SKalle Valo /* extended range in FW SRAM */ 86e705c121SKalle Valo #define IWL_FW_MEM_EXTENDED_START 0x40000 87e705c121SKalle Valo #define IWL_FW_MEM_EXTENDED_END 0x57FFF 88e705c121SKalle Valo 894290eaadSJohannes Berg void iwl_trans_pcie_dump_regs(struct iwl_trans *trans) 90a6d24fadSRajat Jain { 91c4d3f2eeSLuca Coelho #define PCI_DUMP_SIZE 352 92c4d3f2eeSLuca Coelho #define PCI_MEM_DUMP_SIZE 64 93c4d3f2eeSLuca Coelho #define PCI_PARENT_DUMP_SIZE 524 94a6d24fadSRajat Jain #define PREFIX_LEN 32 95a6d24fadSRajat Jain struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); 96a6d24fadSRajat Jain struct pci_dev *pdev = trans_pcie->pci_dev; 97a6d24fadSRajat Jain u32 i, pos, alloc_size, *ptr, *buf; 98a6d24fadSRajat Jain char *prefix; 99a6d24fadSRajat Jain 100a6d24fadSRajat Jain if (trans_pcie->pcie_dbg_dumped_once) 101a6d24fadSRajat Jain return; 102a6d24fadSRajat Jain 103a6d24fadSRajat Jain /* Should be a multiple of 4 */ 104a6d24fadSRajat Jain BUILD_BUG_ON(PCI_DUMP_SIZE > 4096 || PCI_DUMP_SIZE & 0x3); 105c4d3f2eeSLuca Coelho BUILD_BUG_ON(PCI_MEM_DUMP_SIZE > 4096 || PCI_MEM_DUMP_SIZE & 0x3); 106c4d3f2eeSLuca Coelho BUILD_BUG_ON(PCI_PARENT_DUMP_SIZE > 4096 || PCI_PARENT_DUMP_SIZE & 0x3); 107c4d3f2eeSLuca Coelho 108a6d24fadSRajat Jain /* Alloc a max size buffer */ 109a6d24fadSRajat Jain alloc_size = PCI_ERR_ROOT_ERR_SRC + 4 + PREFIX_LEN; 110c4d3f2eeSLuca Coelho alloc_size = max_t(u32, alloc_size, PCI_DUMP_SIZE + PREFIX_LEN); 111c4d3f2eeSLuca Coelho alloc_size = max_t(u32, alloc_size, PCI_MEM_DUMP_SIZE + PREFIX_LEN); 112c4d3f2eeSLuca Coelho alloc_size = max_t(u32, alloc_size, PCI_PARENT_DUMP_SIZE + PREFIX_LEN); 113c4d3f2eeSLuca Coelho 114a6d24fadSRajat Jain buf = kmalloc(alloc_size, GFP_ATOMIC); 115a6d24fadSRajat Jain if (!buf) 116a6d24fadSRajat Jain return; 117a6d24fadSRajat Jain prefix = (char *)buf + alloc_size - PREFIX_LEN; 118a6d24fadSRajat Jain 119a6d24fadSRajat Jain IWL_ERR(trans, "iwlwifi transaction failed, dumping registers\n"); 120a6d24fadSRajat Jain 121a6d24fadSRajat Jain /* Print wifi device registers */ 122a6d24fadSRajat Jain sprintf(prefix, "iwlwifi %s: ", pci_name(pdev)); 123a6d24fadSRajat Jain IWL_ERR(trans, "iwlwifi device config registers:\n"); 124a6d24fadSRajat Jain for (i = 0, ptr = buf; i < PCI_DUMP_SIZE; i += 4, ptr++) 125a6d24fadSRajat Jain if (pci_read_config_dword(pdev, i, ptr)) 126a6d24fadSRajat Jain goto err_read; 127a6d24fadSRajat Jain print_hex_dump(KERN_ERR, prefix, DUMP_PREFIX_OFFSET, 32, 4, buf, i, 0); 128a6d24fadSRajat Jain 129a6d24fadSRajat Jain IWL_ERR(trans, "iwlwifi device memory mapped registers:\n"); 130c4d3f2eeSLuca Coelho for (i = 0, ptr = buf; i < PCI_MEM_DUMP_SIZE; i += 4, ptr++) 131a6d24fadSRajat Jain *ptr = iwl_read32(trans, i); 132a6d24fadSRajat Jain print_hex_dump(KERN_ERR, prefix, DUMP_PREFIX_OFFSET, 32, 4, buf, i, 0); 133a6d24fadSRajat Jain 134a6d24fadSRajat Jain pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_ERR); 135a6d24fadSRajat Jain if (pos) { 136a6d24fadSRajat Jain IWL_ERR(trans, "iwlwifi device AER capability structure:\n"); 137a6d24fadSRajat Jain for (i = 0, ptr = buf; i < PCI_ERR_ROOT_COMMAND; i += 4, ptr++) 138a6d24fadSRajat Jain if (pci_read_config_dword(pdev, pos + i, ptr)) 139a6d24fadSRajat Jain goto err_read; 140a6d24fadSRajat Jain print_hex_dump(KERN_ERR, prefix, DUMP_PREFIX_OFFSET, 141a6d24fadSRajat Jain 32, 4, buf, i, 0); 142a6d24fadSRajat Jain } 143a6d24fadSRajat Jain 144a6d24fadSRajat Jain /* Print parent device registers next */ 145a6d24fadSRajat Jain if (!pdev->bus->self) 146a6d24fadSRajat Jain goto out; 147a6d24fadSRajat Jain 148a6d24fadSRajat Jain pdev = pdev->bus->self; 149a6d24fadSRajat Jain sprintf(prefix, "iwlwifi %s: ", pci_name(pdev)); 150a6d24fadSRajat Jain 151a6d24fadSRajat Jain IWL_ERR(trans, "iwlwifi parent port (%s) config registers:\n", 152a6d24fadSRajat Jain pci_name(pdev)); 153c4d3f2eeSLuca Coelho for (i = 0, ptr = buf; i < PCI_PARENT_DUMP_SIZE; i += 4, ptr++) 154a6d24fadSRajat Jain if (pci_read_config_dword(pdev, i, ptr)) 155a6d24fadSRajat Jain goto err_read; 156a6d24fadSRajat Jain print_hex_dump(KERN_ERR, prefix, DUMP_PREFIX_OFFSET, 32, 4, buf, i, 0); 157a6d24fadSRajat Jain 158a6d24fadSRajat Jain /* Print root port AER registers */ 159a6d24fadSRajat Jain pos = 0; 160a6d24fadSRajat Jain pdev = pcie_find_root_port(pdev); 161a6d24fadSRajat Jain if (pdev) 162a6d24fadSRajat Jain pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_ERR); 163a6d24fadSRajat Jain if (pos) { 164a6d24fadSRajat Jain IWL_ERR(trans, "iwlwifi root port (%s) AER cap structure:\n", 165a6d24fadSRajat Jain pci_name(pdev)); 166a6d24fadSRajat Jain sprintf(prefix, "iwlwifi %s: ", pci_name(pdev)); 167a6d24fadSRajat Jain for (i = 0, ptr = buf; i <= PCI_ERR_ROOT_ERR_SRC; i += 4, ptr++) 168a6d24fadSRajat Jain if (pci_read_config_dword(pdev, pos + i, ptr)) 169a6d24fadSRajat Jain goto err_read; 170a6d24fadSRajat Jain print_hex_dump(KERN_ERR, prefix, DUMP_PREFIX_OFFSET, 32, 171a6d24fadSRajat Jain 4, buf, i, 0); 172a6d24fadSRajat Jain } 173f3402d6dSSara Sharon goto out; 174a6d24fadSRajat Jain 175a6d24fadSRajat Jain err_read: 176a6d24fadSRajat Jain print_hex_dump(KERN_ERR, prefix, DUMP_PREFIX_OFFSET, 32, 4, buf, i, 0); 177a6d24fadSRajat Jain IWL_ERR(trans, "Read failed at 0x%X\n", i); 178a6d24fadSRajat Jain out: 179a6d24fadSRajat Jain trans_pcie->pcie_dbg_dumped_once = 1; 180a6d24fadSRajat Jain kfree(buf); 181a6d24fadSRajat Jain } 182a6d24fadSRajat Jain 183870c2a11SGolan Ben Ami static void iwl_trans_pcie_sw_reset(struct iwl_trans *trans) 184870c2a11SGolan Ben Ami { 185870c2a11SGolan Ben Ami /* Reset entire device - do controller reset (results in SHRD_HW_RST) */ 1866dece0e9SLuca Coelho iwl_set_bit(trans, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET); 187870c2a11SGolan Ben Ami usleep_range(5000, 6000); 188870c2a11SGolan Ben Ami } 189870c2a11SGolan Ben Ami 190e705c121SKalle Valo static void iwl_pcie_free_fw_monitor(struct iwl_trans *trans) 191e705c121SKalle Valo { 19269f0e505SShahar S Matityahu struct iwl_dram_data *fw_mon = &trans->dbg.fw_mon; 193e705c121SKalle Valo 19469f0e505SShahar S Matityahu if (!fw_mon->size) 19569f0e505SShahar S Matityahu return; 19669f0e505SShahar S Matityahu 19769f0e505SShahar S Matityahu dma_free_coherent(trans->dev, fw_mon->size, fw_mon->block, 19869f0e505SShahar S Matityahu fw_mon->physical); 19969f0e505SShahar S Matityahu 20069f0e505SShahar S Matityahu fw_mon->block = NULL; 20169f0e505SShahar S Matityahu fw_mon->physical = 0; 20269f0e505SShahar S Matityahu fw_mon->size = 0; 203e705c121SKalle Valo } 204e705c121SKalle Valo 20588964b2eSSara Sharon static void iwl_pcie_alloc_fw_monitor_block(struct iwl_trans *trans, 20688964b2eSSara Sharon u8 max_power, u8 min_power) 207e705c121SKalle Valo { 20869f0e505SShahar S Matityahu struct iwl_dram_data *fw_mon = &trans->dbg.fw_mon; 20969f0e505SShahar S Matityahu void *block = NULL; 21069f0e505SShahar S Matityahu dma_addr_t physical = 0; 211e705c121SKalle Valo u32 size = 0; 212e705c121SKalle Valo u8 power; 213e705c121SKalle Valo 21469f0e505SShahar S Matityahu if (fw_mon->size) 21569f0e505SShahar S Matityahu return; 21669f0e505SShahar S Matityahu 21788964b2eSSara Sharon for (power = max_power; power >= min_power; power--) { 218e705c121SKalle Valo size = BIT(power); 21969f0e505SShahar S Matityahu block = dma_alloc_coherent(trans->dev, size, &physical, 2202d46f7afSChristoph Hellwig GFP_KERNEL | __GFP_NOWARN); 22169f0e505SShahar S Matityahu if (!block) 222e705c121SKalle Valo continue; 223e705c121SKalle Valo 224e705c121SKalle Valo IWL_INFO(trans, 225c5f97542SShahar S Matityahu "Allocated 0x%08x bytes for firmware monitor.\n", 226c5f97542SShahar S Matityahu size); 227e705c121SKalle Valo break; 228e705c121SKalle Valo } 229e705c121SKalle Valo 23069f0e505SShahar S Matityahu if (WARN_ON_ONCE(!block)) 231e705c121SKalle Valo return; 232e705c121SKalle Valo 233e705c121SKalle Valo if (power != max_power) 234e705c121SKalle Valo IWL_ERR(trans, 235e705c121SKalle Valo "Sorry - debug buffer is only %luK while you requested %luK\n", 236e705c121SKalle Valo (unsigned long)BIT(power - 10), 237e705c121SKalle Valo (unsigned long)BIT(max_power - 10)); 238e705c121SKalle Valo 23969f0e505SShahar S Matityahu fw_mon->block = block; 24069f0e505SShahar S Matityahu fw_mon->physical = physical; 24169f0e505SShahar S Matityahu fw_mon->size = size; 24288964b2eSSara Sharon } 24388964b2eSSara Sharon 24488964b2eSSara Sharon void iwl_pcie_alloc_fw_monitor(struct iwl_trans *trans, u8 max_power) 24588964b2eSSara Sharon { 24688964b2eSSara Sharon if (!max_power) { 24788964b2eSSara Sharon /* default max_power is maximum */ 24888964b2eSSara Sharon max_power = 26; 24988964b2eSSara Sharon } else { 25088964b2eSSara Sharon max_power += 11; 25188964b2eSSara Sharon } 25288964b2eSSara Sharon 25388964b2eSSara Sharon if (WARN(max_power > 26, 25488964b2eSSara Sharon "External buffer size for monitor is too big %d, check the FW TLV\n", 25588964b2eSSara Sharon max_power)) 25688964b2eSSara Sharon return; 25788964b2eSSara Sharon 25869f0e505SShahar S Matityahu if (trans->dbg.fw_mon.size) 25988964b2eSSara Sharon return; 26088964b2eSSara Sharon 26188964b2eSSara Sharon iwl_pcie_alloc_fw_monitor_block(trans, max_power, 11); 262e705c121SKalle Valo } 263e705c121SKalle Valo 264e705c121SKalle Valo static u32 iwl_trans_pcie_read_shr(struct iwl_trans *trans, u32 reg) 265e705c121SKalle Valo { 266e705c121SKalle Valo iwl_write32(trans, HEEP_CTRL_WRD_PCIEX_CTRL_REG, 267e705c121SKalle Valo ((reg & 0x0000ffff) | (2 << 28))); 268e705c121SKalle Valo return iwl_read32(trans, HEEP_CTRL_WRD_PCIEX_DATA_REG); 269e705c121SKalle Valo } 270e705c121SKalle Valo 271e705c121SKalle Valo static void iwl_trans_pcie_write_shr(struct iwl_trans *trans, u32 reg, u32 val) 272e705c121SKalle Valo { 273e705c121SKalle Valo iwl_write32(trans, HEEP_CTRL_WRD_PCIEX_DATA_REG, val); 274e705c121SKalle Valo iwl_write32(trans, HEEP_CTRL_WRD_PCIEX_CTRL_REG, 275e705c121SKalle Valo ((reg & 0x0000ffff) | (3 << 28))); 276e705c121SKalle Valo } 277e705c121SKalle Valo 278e705c121SKalle Valo static void iwl_pcie_set_pwr(struct iwl_trans *trans, bool vaux) 279e705c121SKalle Valo { 280e705c121SKalle Valo if (trans->cfg->apmg_not_supported) 281e705c121SKalle Valo return; 282e705c121SKalle Valo 283e705c121SKalle Valo if (vaux && pci_pme_capable(to_pci_dev(trans->dev), PCI_D3cold)) 284e705c121SKalle Valo iwl_set_bits_mask_prph(trans, APMG_PS_CTRL_REG, 285e705c121SKalle Valo APMG_PS_CTRL_VAL_PWR_SRC_VAUX, 286e705c121SKalle Valo ~APMG_PS_CTRL_MSK_PWR_SRC); 287e705c121SKalle Valo else 288e705c121SKalle Valo iwl_set_bits_mask_prph(trans, APMG_PS_CTRL_REG, 289e705c121SKalle Valo APMG_PS_CTRL_VAL_PWR_SRC_VMAIN, 290e705c121SKalle Valo ~APMG_PS_CTRL_MSK_PWR_SRC); 291e705c121SKalle Valo } 292e705c121SKalle Valo 293e705c121SKalle Valo /* PCI registers */ 294e705c121SKalle Valo #define PCI_CFG_RETRY_TIMEOUT 0x041 295e705c121SKalle Valo 296eda50cdeSSara Sharon void iwl_pcie_apm_config(struct iwl_trans *trans) 297e705c121SKalle Valo { 298e705c121SKalle Valo struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); 299e705c121SKalle Valo u16 lctl; 300e705c121SKalle Valo u16 cap; 301e705c121SKalle Valo 302e705c121SKalle Valo /* 303cc894b85SLuca Coelho * L0S states have been found to be unstable with our devices 304cc894b85SLuca Coelho * and in newer hardware they are not officially supported at 305cc894b85SLuca Coelho * all, so we must always set the L0S_DISABLED bit. 306e705c121SKalle Valo */ 3073d1b28fdSLuca Coelho iwl_set_bit(trans, CSR_GIO_REG, CSR_GIO_REG_VAL_L0S_DISABLED); 308cc894b85SLuca Coelho 309cc894b85SLuca Coelho pcie_capability_read_word(trans_pcie->pci_dev, PCI_EXP_LNKCTL, &lctl); 310e705c121SKalle Valo trans->pm_support = !(lctl & PCI_EXP_LNKCTL_ASPM_L0S); 311e705c121SKalle Valo 312e705c121SKalle Valo pcie_capability_read_word(trans_pcie->pci_dev, PCI_EXP_DEVCTL2, &cap); 313e705c121SKalle Valo trans->ltr_enabled = cap & PCI_EXP_DEVCTL2_LTR_EN; 314d74a61fcSLuca Coelho IWL_DEBUG_POWER(trans, "L1 %sabled - LTR %sabled\n", 315e705c121SKalle Valo (lctl & PCI_EXP_LNKCTL_ASPM_L1) ? "En" : "Dis", 316e705c121SKalle Valo trans->ltr_enabled ? "En" : "Dis"); 317e705c121SKalle Valo } 318e705c121SKalle Valo 319e705c121SKalle Valo /* 320e705c121SKalle Valo * Start up NIC's basic functionality after it has been reset 321e705c121SKalle Valo * (e.g. after platform boot, or shutdown via iwl_pcie_apm_stop()) 322e705c121SKalle Valo * NOTE: This does not load uCode nor start the embedded processor 323e705c121SKalle Valo */ 324e705c121SKalle Valo static int iwl_pcie_apm_init(struct iwl_trans *trans) 325e705c121SKalle Valo { 32652b6e168SEmmanuel Grumbach int ret; 32752b6e168SEmmanuel Grumbach 328e705c121SKalle Valo IWL_DEBUG_INFO(trans, "Init card's basic functions\n"); 329e705c121SKalle Valo 330e705c121SKalle Valo /* 331e705c121SKalle Valo * Use "set_bit" below rather than "write", to preserve any hardware 332e705c121SKalle Valo * bits already set by default after reset. 333e705c121SKalle Valo */ 334e705c121SKalle Valo 335e705c121SKalle Valo /* Disable L0S exit timer (platform NMI Work/Around) */ 336286ca8ebSLuca Coelho if (trans->trans_cfg->device_family < IWL_DEVICE_FAMILY_8000) 337e705c121SKalle Valo iwl_set_bit(trans, CSR_GIO_CHICKEN_BITS, 338e705c121SKalle Valo CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER); 339e705c121SKalle Valo 340e705c121SKalle Valo /* 341e705c121SKalle Valo * Disable L0s without affecting L1; 342e705c121SKalle Valo * don't wait for ICH L0s (ICH bug W/A) 343e705c121SKalle Valo */ 344e705c121SKalle Valo iwl_set_bit(trans, CSR_GIO_CHICKEN_BITS, 345e705c121SKalle Valo CSR_GIO_CHICKEN_BITS_REG_BIT_L1A_NO_L0S_RX); 346e705c121SKalle Valo 347e705c121SKalle Valo /* Set FH wait threshold to maximum (HW error during stress W/A) */ 348e705c121SKalle Valo iwl_set_bit(trans, CSR_DBG_HPET_MEM_REG, CSR_DBG_HPET_MEM_REG_VAL); 349e705c121SKalle Valo 350e705c121SKalle Valo /* 351e705c121SKalle Valo * Enable HAP INTA (interrupt from management bus) to 352e705c121SKalle Valo * wake device's PCI Express link L1a -> L0s 353e705c121SKalle Valo */ 354e705c121SKalle Valo iwl_set_bit(trans, CSR_HW_IF_CONFIG_REG, 355e705c121SKalle Valo CSR_HW_IF_CONFIG_REG_BIT_HAP_WAKE_L1A); 356e705c121SKalle Valo 357e705c121SKalle Valo iwl_pcie_apm_config(trans); 358e705c121SKalle Valo 359e705c121SKalle Valo /* Configure analog phase-lock-loop before activating to D0A */ 360286ca8ebSLuca Coelho if (trans->trans_cfg->base_params->pll_cfg) 36177d76931SJohannes Berg iwl_set_bit(trans, CSR_ANA_PLL_CFG, CSR50_ANA_PLL_CFG_VAL); 362e705c121SKalle Valo 3637d34a7d7SLuca Coelho ret = iwl_finish_nic_init(trans, trans->trans_cfg); 364c96b5eecSJohannes Berg if (ret) 36552b6e168SEmmanuel Grumbach return ret; 366e705c121SKalle Valo 367e705c121SKalle Valo if (trans->cfg->host_interrupt_operation_mode) { 368e705c121SKalle Valo /* 369e705c121SKalle Valo * This is a bit of an abuse - This is needed for 7260 / 3160 370e705c121SKalle Valo * only check host_interrupt_operation_mode even if this is 371e705c121SKalle Valo * not related to host_interrupt_operation_mode. 372e705c121SKalle Valo * 373e705c121SKalle Valo * Enable the oscillator to count wake up time for L1 exit. This 374e705c121SKalle Valo * consumes slightly more power (100uA) - but allows to be sure 375e705c121SKalle Valo * that we wake up from L1 on time. 376e705c121SKalle Valo * 377e705c121SKalle Valo * This looks weird: read twice the same register, discard the 378e705c121SKalle Valo * value, set a bit, and yet again, read that same register 379e705c121SKalle Valo * just to discard the value. But that's the way the hardware 380e705c121SKalle Valo * seems to like it. 381e705c121SKalle Valo */ 382e705c121SKalle Valo iwl_read_prph(trans, OSC_CLK); 383e705c121SKalle Valo iwl_read_prph(trans, OSC_CLK); 384e705c121SKalle Valo iwl_set_bits_prph(trans, OSC_CLK, OSC_CLK_FORCE_CONTROL); 385e705c121SKalle Valo iwl_read_prph(trans, OSC_CLK); 386e705c121SKalle Valo iwl_read_prph(trans, OSC_CLK); 387e705c121SKalle Valo } 388e705c121SKalle Valo 389e705c121SKalle Valo /* 390e705c121SKalle Valo * Enable DMA clock and wait for it to stabilize. 391e705c121SKalle Valo * 392e705c121SKalle Valo * Write to "CLK_EN_REG"; "1" bits enable clocks, while "0" 393e705c121SKalle Valo * bits do not disable clocks. This preserves any hardware 394e705c121SKalle Valo * bits already set by default in "CLK_CTRL_REG" after reset. 395e705c121SKalle Valo */ 396e705c121SKalle Valo if (!trans->cfg->apmg_not_supported) { 397e705c121SKalle Valo iwl_write_prph(trans, APMG_CLK_EN_REG, 398e705c121SKalle Valo APMG_CLK_VAL_DMA_CLK_RQT); 399e705c121SKalle Valo udelay(20); 400e705c121SKalle Valo 401e705c121SKalle Valo /* Disable L1-Active */ 402e705c121SKalle Valo iwl_set_bits_prph(trans, APMG_PCIDEV_STT_REG, 403e705c121SKalle Valo APMG_PCIDEV_STT_VAL_L1_ACT_DIS); 404e705c121SKalle Valo 405e705c121SKalle Valo /* Clear the interrupt in APMG if the NIC is in RFKILL */ 406e705c121SKalle Valo iwl_write_prph(trans, APMG_RTC_INT_STT_REG, 407e705c121SKalle Valo APMG_RTC_INT_STT_RFKILL); 408e705c121SKalle Valo } 409e705c121SKalle Valo 410e705c121SKalle Valo set_bit(STATUS_DEVICE_ENABLED, &trans->status); 411e705c121SKalle Valo 41252b6e168SEmmanuel Grumbach return 0; 413e705c121SKalle Valo } 414e705c121SKalle Valo 415e705c121SKalle Valo /* 416e705c121SKalle Valo * Enable LP XTAL to avoid HW bug where device may consume much power if 417e705c121SKalle Valo * FW is not loaded after device reset. LP XTAL is disabled by default 418e705c121SKalle Valo * after device HW reset. Do it only if XTAL is fed by internal source. 419e705c121SKalle Valo * Configure device's "persistence" mode to avoid resetting XTAL again when 420e705c121SKalle Valo * SHRD_HW_RST occurs in S3. 421e705c121SKalle Valo */ 422e705c121SKalle Valo static void iwl_pcie_apm_lp_xtal_enable(struct iwl_trans *trans) 423e705c121SKalle Valo { 424e705c121SKalle Valo int ret; 425e705c121SKalle Valo u32 apmg_gp1_reg; 426e705c121SKalle Valo u32 apmg_xtal_cfg_reg; 427e705c121SKalle Valo u32 dl_cfg_reg; 428e705c121SKalle Valo 429e705c121SKalle Valo /* Force XTAL ON */ 430e705c121SKalle Valo __iwl_trans_pcie_set_bit(trans, CSR_GP_CNTRL, 431e705c121SKalle Valo CSR_GP_CNTRL_REG_FLAG_XTAL_ON); 432e705c121SKalle Valo 433870c2a11SGolan Ben Ami iwl_trans_pcie_sw_reset(trans); 434e705c121SKalle Valo 4357d34a7d7SLuca Coelho ret = iwl_finish_nic_init(trans, trans->trans_cfg); 436c96b5eecSJohannes Berg if (WARN_ON(ret)) { 437e705c121SKalle Valo /* Release XTAL ON request */ 438e705c121SKalle Valo __iwl_trans_pcie_clear_bit(trans, CSR_GP_CNTRL, 439e705c121SKalle Valo CSR_GP_CNTRL_REG_FLAG_XTAL_ON); 440e705c121SKalle Valo return; 441e705c121SKalle Valo } 442e705c121SKalle Valo 443e705c121SKalle Valo /* 444e705c121SKalle Valo * Clear "disable persistence" to avoid LP XTAL resetting when 445e705c121SKalle Valo * SHRD_HW_RST is applied in S3. 446e705c121SKalle Valo */ 447e705c121SKalle Valo iwl_clear_bits_prph(trans, APMG_PCIDEV_STT_REG, 448e705c121SKalle Valo APMG_PCIDEV_STT_VAL_PERSIST_DIS); 449e705c121SKalle Valo 450e705c121SKalle Valo /* 451e705c121SKalle Valo * Force APMG XTAL to be active to prevent its disabling by HW 452e705c121SKalle Valo * caused by APMG idle state. 453e705c121SKalle Valo */ 454e705c121SKalle Valo apmg_xtal_cfg_reg = iwl_trans_pcie_read_shr(trans, 455e705c121SKalle Valo SHR_APMG_XTAL_CFG_REG); 456e705c121SKalle Valo iwl_trans_pcie_write_shr(trans, SHR_APMG_XTAL_CFG_REG, 457e705c121SKalle Valo apmg_xtal_cfg_reg | 458e705c121SKalle Valo SHR_APMG_XTAL_CFG_XTAL_ON_REQ); 459e705c121SKalle Valo 460870c2a11SGolan Ben Ami iwl_trans_pcie_sw_reset(trans); 461e705c121SKalle Valo 462e705c121SKalle Valo /* Enable LP XTAL by indirect access through CSR */ 463e705c121SKalle Valo apmg_gp1_reg = iwl_trans_pcie_read_shr(trans, SHR_APMG_GP1_REG); 464e705c121SKalle Valo iwl_trans_pcie_write_shr(trans, SHR_APMG_GP1_REG, apmg_gp1_reg | 465e705c121SKalle Valo SHR_APMG_GP1_WF_XTAL_LP_EN | 466e705c121SKalle Valo SHR_APMG_GP1_CHICKEN_BIT_SELECT); 467e705c121SKalle Valo 468e705c121SKalle Valo /* Clear delay line clock power up */ 469e705c121SKalle Valo dl_cfg_reg = iwl_trans_pcie_read_shr(trans, SHR_APMG_DL_CFG_REG); 470e705c121SKalle Valo iwl_trans_pcie_write_shr(trans, SHR_APMG_DL_CFG_REG, dl_cfg_reg & 471e705c121SKalle Valo ~SHR_APMG_DL_CFG_DL_CLOCK_POWER_UP); 472e705c121SKalle Valo 473e705c121SKalle Valo /* 474e705c121SKalle Valo * Enable persistence mode to avoid LP XTAL resetting when 475e705c121SKalle Valo * SHRD_HW_RST is applied in S3. 476e705c121SKalle Valo */ 477e705c121SKalle Valo iwl_set_bit(trans, CSR_HW_IF_CONFIG_REG, 478e705c121SKalle Valo CSR_HW_IF_CONFIG_REG_PERSIST_MODE); 479e705c121SKalle Valo 480e705c121SKalle Valo /* 481e705c121SKalle Valo * Clear "initialization complete" bit to move adapter from 482e705c121SKalle Valo * D0A* (powered-up Active) --> D0U* (Uninitialized) state. 483e705c121SKalle Valo */ 4846dece0e9SLuca Coelho iwl_clear_bit(trans, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE); 485e705c121SKalle Valo 486e705c121SKalle Valo /* Activates XTAL resources monitor */ 487e705c121SKalle Valo __iwl_trans_pcie_set_bit(trans, CSR_MONITOR_CFG_REG, 488e705c121SKalle Valo CSR_MONITOR_XTAL_RESOURCES); 489e705c121SKalle Valo 490e705c121SKalle Valo /* Release XTAL ON request */ 491e705c121SKalle Valo __iwl_trans_pcie_clear_bit(trans, CSR_GP_CNTRL, 492e705c121SKalle Valo CSR_GP_CNTRL_REG_FLAG_XTAL_ON); 493e705c121SKalle Valo udelay(10); 494e705c121SKalle Valo 495e705c121SKalle Valo /* Release APMG XTAL */ 496e705c121SKalle Valo iwl_trans_pcie_write_shr(trans, SHR_APMG_XTAL_CFG_REG, 497e705c121SKalle Valo apmg_xtal_cfg_reg & 498e705c121SKalle Valo ~SHR_APMG_XTAL_CFG_XTAL_ON_REQ); 499e705c121SKalle Valo } 500e705c121SKalle Valo 501e8c8935eSJohannes Berg void iwl_pcie_apm_stop_master(struct iwl_trans *trans) 502e705c121SKalle Valo { 503e8c8935eSJohannes Berg int ret; 504e705c121SKalle Valo 505e705c121SKalle Valo /* stop device's busmaster DMA activity */ 5066dece0e9SLuca Coelho iwl_set_bit(trans, CSR_RESET, CSR_RESET_REG_FLAG_STOP_MASTER); 507e705c121SKalle Valo 5086dece0e9SLuca Coelho ret = iwl_poll_bit(trans, CSR_RESET, 5096dece0e9SLuca Coelho CSR_RESET_REG_FLAG_MASTER_DISABLED, 5106dece0e9SLuca Coelho CSR_RESET_REG_FLAG_MASTER_DISABLED, 100); 511e705c121SKalle Valo if (ret < 0) 512e705c121SKalle Valo IWL_WARN(trans, "Master Disable Timed Out, 100 usec\n"); 513e705c121SKalle Valo 514e705c121SKalle Valo IWL_DEBUG_INFO(trans, "stop master\n"); 515e705c121SKalle Valo } 516e705c121SKalle Valo 517e705c121SKalle Valo static void iwl_pcie_apm_stop(struct iwl_trans *trans, bool op_mode_leave) 518e705c121SKalle Valo { 519e705c121SKalle Valo IWL_DEBUG_INFO(trans, "Stop card, put in low power state\n"); 520e705c121SKalle Valo 521e705c121SKalle Valo if (op_mode_leave) { 522e705c121SKalle Valo if (!test_bit(STATUS_DEVICE_ENABLED, &trans->status)) 523e705c121SKalle Valo iwl_pcie_apm_init(trans); 524e705c121SKalle Valo 525e705c121SKalle Valo /* inform ME that we are leaving */ 526286ca8ebSLuca Coelho if (trans->trans_cfg->device_family == IWL_DEVICE_FAMILY_7000) 527e705c121SKalle Valo iwl_set_bits_prph(trans, APMG_PCIDEV_STT_REG, 528e705c121SKalle Valo APMG_PCIDEV_STT_VAL_WAKE_ME); 529286ca8ebSLuca Coelho else if (trans->trans_cfg->device_family >= 53079b6c8feSLuca Coelho IWL_DEVICE_FAMILY_8000) { 531e705c121SKalle Valo iwl_set_bit(trans, CSR_DBG_LINK_PWR_MGMT_REG, 532e705c121SKalle Valo CSR_RESET_LINK_PWR_MGMT_DISABLED); 533e705c121SKalle Valo iwl_set_bit(trans, CSR_HW_IF_CONFIG_REG, 534e705c121SKalle Valo CSR_HW_IF_CONFIG_REG_PREPARE | 535e705c121SKalle Valo CSR_HW_IF_CONFIG_REG_ENABLE_PME); 536e705c121SKalle Valo mdelay(1); 537e705c121SKalle Valo iwl_clear_bit(trans, CSR_DBG_LINK_PWR_MGMT_REG, 538e705c121SKalle Valo CSR_RESET_LINK_PWR_MGMT_DISABLED); 539e705c121SKalle Valo } 540e705c121SKalle Valo mdelay(5); 541e705c121SKalle Valo } 542e705c121SKalle Valo 543e705c121SKalle Valo clear_bit(STATUS_DEVICE_ENABLED, &trans->status); 544e705c121SKalle Valo 545e705c121SKalle Valo /* Stop device's DMA activity */ 546e705c121SKalle Valo iwl_pcie_apm_stop_master(trans); 547e705c121SKalle Valo 548e705c121SKalle Valo if (trans->cfg->lp_xtal_workaround) { 549e705c121SKalle Valo iwl_pcie_apm_lp_xtal_enable(trans); 550e705c121SKalle Valo return; 551e705c121SKalle Valo } 552e705c121SKalle Valo 553870c2a11SGolan Ben Ami iwl_trans_pcie_sw_reset(trans); 554e705c121SKalle Valo 555e705c121SKalle Valo /* 556e705c121SKalle Valo * Clear "initialization complete" bit to move adapter from 557e705c121SKalle Valo * D0A* (powered-up Active) --> D0U* (Uninitialized) state. 558e705c121SKalle Valo */ 5596dece0e9SLuca Coelho iwl_clear_bit(trans, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE); 560e705c121SKalle Valo } 561e705c121SKalle Valo 562e705c121SKalle Valo static int iwl_pcie_nic_init(struct iwl_trans *trans) 563e705c121SKalle Valo { 564e705c121SKalle Valo struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); 56552b6e168SEmmanuel Grumbach int ret; 566e705c121SKalle Valo 567e705c121SKalle Valo /* nic_init */ 568e705c121SKalle Valo spin_lock(&trans_pcie->irq_lock); 56952b6e168SEmmanuel Grumbach ret = iwl_pcie_apm_init(trans); 570e705c121SKalle Valo spin_unlock(&trans_pcie->irq_lock); 571e705c121SKalle Valo 57252b6e168SEmmanuel Grumbach if (ret) 57352b6e168SEmmanuel Grumbach return ret; 57452b6e168SEmmanuel Grumbach 575e705c121SKalle Valo iwl_pcie_set_pwr(trans, false); 576e705c121SKalle Valo 577e705c121SKalle Valo iwl_op_mode_nic_config(trans->op_mode); 578e705c121SKalle Valo 579e705c121SKalle Valo /* Allocate the RX queue, or reset if it is already allocated */ 580e705c121SKalle Valo iwl_pcie_rx_init(trans); 581e705c121SKalle Valo 582e705c121SKalle Valo /* Allocate or reset and init all Tx and Command queues */ 583e705c121SKalle Valo if (iwl_pcie_tx_init(trans)) 584e705c121SKalle Valo return -ENOMEM; 585e705c121SKalle Valo 586286ca8ebSLuca Coelho if (trans->trans_cfg->base_params->shadow_reg_enable) { 587e705c121SKalle Valo /* enable shadow regs in HW */ 588e705c121SKalle Valo iwl_set_bit(trans, CSR_MAC_SHADOW_REG_CTRL, 0x800FFFFF); 589e705c121SKalle Valo IWL_DEBUG_INFO(trans, "Enabling shadow registers in device\n"); 590e705c121SKalle Valo } 591e705c121SKalle Valo 592e705c121SKalle Valo return 0; 593e705c121SKalle Valo } 594e705c121SKalle Valo 595e705c121SKalle Valo #define HW_READY_TIMEOUT (50) 596e705c121SKalle Valo 597e705c121SKalle Valo /* Note: returns poll_bit return value, which is >= 0 if success */ 598e705c121SKalle Valo static int iwl_pcie_set_hw_ready(struct iwl_trans *trans) 599e705c121SKalle Valo { 600e705c121SKalle Valo int ret; 601e705c121SKalle Valo 602e705c121SKalle Valo iwl_set_bit(trans, CSR_HW_IF_CONFIG_REG, 603e705c121SKalle Valo CSR_HW_IF_CONFIG_REG_BIT_NIC_READY); 604e705c121SKalle Valo 605e705c121SKalle Valo /* See if we got it */ 606e705c121SKalle Valo ret = iwl_poll_bit(trans, CSR_HW_IF_CONFIG_REG, 607e705c121SKalle Valo CSR_HW_IF_CONFIG_REG_BIT_NIC_READY, 608e705c121SKalle Valo CSR_HW_IF_CONFIG_REG_BIT_NIC_READY, 609e705c121SKalle Valo HW_READY_TIMEOUT); 610e705c121SKalle Valo 611e705c121SKalle Valo if (ret >= 0) 612e705c121SKalle Valo iwl_set_bit(trans, CSR_MBOX_SET_REG, CSR_MBOX_SET_REG_OS_ALIVE); 613e705c121SKalle Valo 614e705c121SKalle Valo IWL_DEBUG_INFO(trans, "hardware%s ready\n", ret < 0 ? " not" : ""); 615e705c121SKalle Valo return ret; 616e705c121SKalle Valo } 617e705c121SKalle Valo 618e705c121SKalle Valo /* Note: returns standard 0/-ERROR code */ 619eda50cdeSSara Sharon int iwl_pcie_prepare_card_hw(struct iwl_trans *trans) 620e705c121SKalle Valo { 621e705c121SKalle Valo int ret; 622e705c121SKalle Valo int t = 0; 623e705c121SKalle Valo int iter; 624e705c121SKalle Valo 625e705c121SKalle Valo IWL_DEBUG_INFO(trans, "iwl_trans_prepare_card_hw enter\n"); 626e705c121SKalle Valo 627e705c121SKalle Valo ret = iwl_pcie_set_hw_ready(trans); 628e705c121SKalle Valo /* If the card is ready, exit 0 */ 629e705c121SKalle Valo if (ret >= 0) 630e705c121SKalle Valo return 0; 631e705c121SKalle Valo 632e705c121SKalle Valo iwl_set_bit(trans, CSR_DBG_LINK_PWR_MGMT_REG, 633e705c121SKalle Valo CSR_RESET_LINK_PWR_MGMT_DISABLED); 634192185d6SJohannes Berg usleep_range(1000, 2000); 635e705c121SKalle Valo 636e705c121SKalle Valo for (iter = 0; iter < 10; iter++) { 637e705c121SKalle Valo /* If HW is not ready, prepare the conditions to check again */ 638e705c121SKalle Valo iwl_set_bit(trans, CSR_HW_IF_CONFIG_REG, 639e705c121SKalle Valo CSR_HW_IF_CONFIG_REG_PREPARE); 640e705c121SKalle Valo 641e705c121SKalle Valo do { 642e705c121SKalle Valo ret = iwl_pcie_set_hw_ready(trans); 643e705c121SKalle Valo if (ret >= 0) 644e705c121SKalle Valo return 0; 645e705c121SKalle Valo 646e705c121SKalle Valo usleep_range(200, 1000); 647e705c121SKalle Valo t += 200; 648e705c121SKalle Valo } while (t < 150000); 649e705c121SKalle Valo msleep(25); 650e705c121SKalle Valo } 651e705c121SKalle Valo 652e705c121SKalle Valo IWL_ERR(trans, "Couldn't prepare the card\n"); 653e705c121SKalle Valo 654e705c121SKalle Valo return ret; 655e705c121SKalle Valo } 656e705c121SKalle Valo 657e705c121SKalle Valo /* 658e705c121SKalle Valo * ucode 659e705c121SKalle Valo */ 660564cdce7SSara Sharon static void iwl_pcie_load_firmware_chunk_fh(struct iwl_trans *trans, 661564cdce7SSara Sharon u32 dst_addr, dma_addr_t phy_addr, 662564cdce7SSara Sharon u32 byte_cnt) 663e705c121SKalle Valo { 664bac842daSEmmanuel Grumbach iwl_write32(trans, FH_TCSR_CHNL_TX_CONFIG_REG(FH_SRVC_CHNL), 665e705c121SKalle Valo FH_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_PAUSE); 666e705c121SKalle Valo 667bac842daSEmmanuel Grumbach iwl_write32(trans, FH_SRVC_CHNL_SRAM_ADDR_REG(FH_SRVC_CHNL), 668e705c121SKalle Valo dst_addr); 669e705c121SKalle Valo 670bac842daSEmmanuel Grumbach iwl_write32(trans, FH_TFDIB_CTRL0_REG(FH_SRVC_CHNL), 671e705c121SKalle Valo phy_addr & FH_MEM_TFDIB_DRAM_ADDR_LSB_MSK); 672e705c121SKalle Valo 673bac842daSEmmanuel Grumbach iwl_write32(trans, FH_TFDIB_CTRL1_REG(FH_SRVC_CHNL), 674e705c121SKalle Valo (iwl_get_dma_hi_addr(phy_addr) 675e705c121SKalle Valo << FH_MEM_TFDIB_REG1_ADDR_BITSHIFT) | byte_cnt); 676e705c121SKalle Valo 677bac842daSEmmanuel Grumbach iwl_write32(trans, FH_TCSR_CHNL_TX_BUF_STS_REG(FH_SRVC_CHNL), 678bac842daSEmmanuel Grumbach BIT(FH_TCSR_CHNL_TX_BUF_STS_REG_POS_TB_NUM) | 679bac842daSEmmanuel Grumbach BIT(FH_TCSR_CHNL_TX_BUF_STS_REG_POS_TB_IDX) | 680e705c121SKalle Valo FH_TCSR_CHNL_TX_BUF_STS_REG_VAL_TFDB_VALID); 681e705c121SKalle Valo 682bac842daSEmmanuel Grumbach iwl_write32(trans, FH_TCSR_CHNL_TX_CONFIG_REG(FH_SRVC_CHNL), 683e705c121SKalle Valo FH_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_ENABLE | 684e705c121SKalle Valo FH_TCSR_TX_CONFIG_REG_VAL_DMA_CREDIT_DISABLE | 685e705c121SKalle Valo FH_TCSR_TX_CONFIG_REG_VAL_CIRQ_HOST_ENDTFD); 686564cdce7SSara Sharon } 687e705c121SKalle Valo 688564cdce7SSara Sharon static int iwl_pcie_load_firmware_chunk(struct iwl_trans *trans, 689564cdce7SSara Sharon u32 dst_addr, dma_addr_t phy_addr, 690564cdce7SSara Sharon u32 byte_cnt) 691564cdce7SSara Sharon { 692564cdce7SSara Sharon struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); 693564cdce7SSara Sharon unsigned long flags; 694564cdce7SSara Sharon int ret; 695564cdce7SSara Sharon 696564cdce7SSara Sharon trans_pcie->ucode_write_complete = false; 697564cdce7SSara Sharon 698564cdce7SSara Sharon if (!iwl_trans_grab_nic_access(trans, &flags)) 699564cdce7SSara Sharon return -EIO; 700564cdce7SSara Sharon 701564cdce7SSara Sharon iwl_pcie_load_firmware_chunk_fh(trans, dst_addr, phy_addr, 702564cdce7SSara Sharon byte_cnt); 703bac842daSEmmanuel Grumbach iwl_trans_release_nic_access(trans, &flags); 704bac842daSEmmanuel Grumbach 705e705c121SKalle Valo ret = wait_event_timeout(trans_pcie->ucode_write_waitq, 706e705c121SKalle Valo trans_pcie->ucode_write_complete, 5 * HZ); 707e705c121SKalle Valo if (!ret) { 708e705c121SKalle Valo IWL_ERR(trans, "Failed to load firmware chunk!\n"); 709fb12777aSKirtika Ruchandani iwl_trans_pcie_dump_regs(trans); 710e705c121SKalle Valo return -ETIMEDOUT; 711e705c121SKalle Valo } 712e705c121SKalle Valo 713e705c121SKalle Valo return 0; 714e705c121SKalle Valo } 715e705c121SKalle Valo 716e705c121SKalle Valo static int iwl_pcie_load_section(struct iwl_trans *trans, u8 section_num, 717e705c121SKalle Valo const struct fw_desc *section) 718e705c121SKalle Valo { 719e705c121SKalle Valo u8 *v_addr; 720e705c121SKalle Valo dma_addr_t p_addr; 721e705c121SKalle Valo u32 offset, chunk_sz = min_t(u32, FH_MEM_TB_MAX_LENGTH, section->len); 722e705c121SKalle Valo int ret = 0; 723e705c121SKalle Valo 724e705c121SKalle Valo IWL_DEBUG_FW(trans, "[%d] uCode section being loaded...\n", 725e705c121SKalle Valo section_num); 726e705c121SKalle Valo 727e705c121SKalle Valo v_addr = dma_alloc_coherent(trans->dev, chunk_sz, &p_addr, 728e705c121SKalle Valo GFP_KERNEL | __GFP_NOWARN); 729e705c121SKalle Valo if (!v_addr) { 730e705c121SKalle Valo IWL_DEBUG_INFO(trans, "Falling back to small chunks of DMA\n"); 731e705c121SKalle Valo chunk_sz = PAGE_SIZE; 732e705c121SKalle Valo v_addr = dma_alloc_coherent(trans->dev, chunk_sz, 733e705c121SKalle Valo &p_addr, GFP_KERNEL); 734e705c121SKalle Valo if (!v_addr) 735e705c121SKalle Valo return -ENOMEM; 736e705c121SKalle Valo } 737e705c121SKalle Valo 738e705c121SKalle Valo for (offset = 0; offset < section->len; offset += chunk_sz) { 739e705c121SKalle Valo u32 copy_size, dst_addr; 740e705c121SKalle Valo bool extended_addr = false; 741e705c121SKalle Valo 742e705c121SKalle Valo copy_size = min_t(u32, chunk_sz, section->len - offset); 743e705c121SKalle Valo dst_addr = section->offset + offset; 744e705c121SKalle Valo 745e705c121SKalle Valo if (dst_addr >= IWL_FW_MEM_EXTENDED_START && 746e705c121SKalle Valo dst_addr <= IWL_FW_MEM_EXTENDED_END) 747e705c121SKalle Valo extended_addr = true; 748e705c121SKalle Valo 749e705c121SKalle Valo if (extended_addr) 750e705c121SKalle Valo iwl_set_bits_prph(trans, LMPM_CHICK, 751e705c121SKalle Valo LMPM_CHICK_EXTENDED_ADDR_SPACE); 752e705c121SKalle Valo 753e705c121SKalle Valo memcpy(v_addr, (u8 *)section->data + offset, copy_size); 754e705c121SKalle Valo ret = iwl_pcie_load_firmware_chunk(trans, dst_addr, p_addr, 755e705c121SKalle Valo copy_size); 756e705c121SKalle Valo 757e705c121SKalle Valo if (extended_addr) 758e705c121SKalle Valo iwl_clear_bits_prph(trans, LMPM_CHICK, 759e705c121SKalle Valo LMPM_CHICK_EXTENDED_ADDR_SPACE); 760e705c121SKalle Valo 761e705c121SKalle Valo if (ret) { 762e705c121SKalle Valo IWL_ERR(trans, 763e705c121SKalle Valo "Could not load the [%d] uCode section\n", 764e705c121SKalle Valo section_num); 765e705c121SKalle Valo break; 766e705c121SKalle Valo } 767e705c121SKalle Valo } 768e705c121SKalle Valo 769e705c121SKalle Valo dma_free_coherent(trans->dev, chunk_sz, v_addr, p_addr); 770e705c121SKalle Valo return ret; 771e705c121SKalle Valo } 772e705c121SKalle Valo 773e705c121SKalle Valo static int iwl_pcie_load_cpu_sections_8000(struct iwl_trans *trans, 774e705c121SKalle Valo const struct fw_img *image, 775e705c121SKalle Valo int cpu, 776e705c121SKalle Valo int *first_ucode_section) 777e705c121SKalle Valo { 778e705c121SKalle Valo int shift_param; 779e705c121SKalle Valo int i, ret = 0, sec_num = 0x1; 780e705c121SKalle Valo u32 val, last_read_idx = 0; 781e705c121SKalle Valo 782e705c121SKalle Valo if (cpu == 1) { 783e705c121SKalle Valo shift_param = 0; 784e705c121SKalle Valo *first_ucode_section = 0; 785e705c121SKalle Valo } else { 786e705c121SKalle Valo shift_param = 16; 787e705c121SKalle Valo (*first_ucode_section)++; 788e705c121SKalle Valo } 789e705c121SKalle Valo 790eef187a7SSara Sharon for (i = *first_ucode_section; i < image->num_sec; i++) { 791e705c121SKalle Valo last_read_idx = i; 792e705c121SKalle Valo 793e705c121SKalle Valo /* 794e705c121SKalle Valo * CPU1_CPU2_SEPARATOR_SECTION delimiter - separate between 795e705c121SKalle Valo * CPU1 to CPU2. 796e705c121SKalle Valo * PAGING_SEPARATOR_SECTION delimiter - separate between 797e705c121SKalle Valo * CPU2 non paged to CPU2 paging sec. 798e705c121SKalle Valo */ 799e705c121SKalle Valo if (!image->sec[i].data || 800e705c121SKalle Valo image->sec[i].offset == CPU1_CPU2_SEPARATOR_SECTION || 801e705c121SKalle Valo image->sec[i].offset == PAGING_SEPARATOR_SECTION) { 802e705c121SKalle Valo IWL_DEBUG_FW(trans, 803e705c121SKalle Valo "Break since Data not valid or Empty section, sec = %d\n", 804e705c121SKalle Valo i); 805e705c121SKalle Valo break; 806e705c121SKalle Valo } 807e705c121SKalle Valo 808e705c121SKalle Valo ret = iwl_pcie_load_section(trans, i, &image->sec[i]); 809e705c121SKalle Valo if (ret) 810e705c121SKalle Valo return ret; 811e705c121SKalle Valo 812d6a2c5c7SSara Sharon /* Notify ucode of loaded section number and status */ 813e705c121SKalle Valo val = iwl_read_direct32(trans, FH_UCODE_LOAD_STATUS); 814e705c121SKalle Valo val = val | (sec_num << shift_param); 815e705c121SKalle Valo iwl_write_direct32(trans, FH_UCODE_LOAD_STATUS, val); 816eda50cdeSSara Sharon 817e705c121SKalle Valo sec_num = (sec_num << 1) | 0x1; 818e705c121SKalle Valo } 819e705c121SKalle Valo 820e705c121SKalle Valo *first_ucode_section = last_read_idx; 821e705c121SKalle Valo 8222aabdbdcSEmmanuel Grumbach iwl_enable_interrupts(trans); 8232aabdbdcSEmmanuel Grumbach 824286ca8ebSLuca Coelho if (trans->trans_cfg->use_tfh) { 825e705c121SKalle Valo if (cpu == 1) 826d6a2c5c7SSara Sharon iwl_write_prph(trans, UREG_UCODE_LOAD_STATUS, 827d6a2c5c7SSara Sharon 0xFFFF); 828e705c121SKalle Valo else 829d6a2c5c7SSara Sharon iwl_write_prph(trans, UREG_UCODE_LOAD_STATUS, 830d6a2c5c7SSara Sharon 0xFFFFFFFF); 831d6a2c5c7SSara Sharon } else { 832d6a2c5c7SSara Sharon if (cpu == 1) 833d6a2c5c7SSara Sharon iwl_write_direct32(trans, FH_UCODE_LOAD_STATUS, 834d6a2c5c7SSara Sharon 0xFFFF); 835d6a2c5c7SSara Sharon else 836d6a2c5c7SSara Sharon iwl_write_direct32(trans, FH_UCODE_LOAD_STATUS, 837d6a2c5c7SSara Sharon 0xFFFFFFFF); 838d6a2c5c7SSara Sharon } 839e705c121SKalle Valo 840e705c121SKalle Valo return 0; 841e705c121SKalle Valo } 842e705c121SKalle Valo 843e705c121SKalle Valo static int iwl_pcie_load_cpu_sections(struct iwl_trans *trans, 844e705c121SKalle Valo const struct fw_img *image, 845e705c121SKalle Valo int cpu, 846e705c121SKalle Valo int *first_ucode_section) 847e705c121SKalle Valo { 848e705c121SKalle Valo int i, ret = 0; 849e705c121SKalle Valo u32 last_read_idx = 0; 850e705c121SKalle Valo 8513ce4a038SKirtika Ruchandani if (cpu == 1) 852e705c121SKalle Valo *first_ucode_section = 0; 8533ce4a038SKirtika Ruchandani else 854e705c121SKalle Valo (*first_ucode_section)++; 855e705c121SKalle Valo 856eef187a7SSara Sharon for (i = *first_ucode_section; i < image->num_sec; i++) { 857e705c121SKalle Valo last_read_idx = i; 858e705c121SKalle Valo 859e705c121SKalle Valo /* 860e705c121SKalle Valo * CPU1_CPU2_SEPARATOR_SECTION delimiter - separate between 861e705c121SKalle Valo * CPU1 to CPU2. 862e705c121SKalle Valo * PAGING_SEPARATOR_SECTION delimiter - separate between 863e705c121SKalle Valo * CPU2 non paged to CPU2 paging sec. 864e705c121SKalle Valo */ 865e705c121SKalle Valo if (!image->sec[i].data || 866e705c121SKalle Valo image->sec[i].offset == CPU1_CPU2_SEPARATOR_SECTION || 867e705c121SKalle Valo image->sec[i].offset == PAGING_SEPARATOR_SECTION) { 868e705c121SKalle Valo IWL_DEBUG_FW(trans, 869e705c121SKalle Valo "Break since Data not valid or Empty section, sec = %d\n", 870e705c121SKalle Valo i); 871e705c121SKalle Valo break; 872e705c121SKalle Valo } 873e705c121SKalle Valo 874e705c121SKalle Valo ret = iwl_pcie_load_section(trans, i, &image->sec[i]); 875e705c121SKalle Valo if (ret) 876e705c121SKalle Valo return ret; 877e705c121SKalle Valo } 878e705c121SKalle Valo 879e705c121SKalle Valo *first_ucode_section = last_read_idx; 880e705c121SKalle Valo 881e705c121SKalle Valo return 0; 882e705c121SKalle Valo } 883e705c121SKalle Valo 884593fae3eSShahar S Matityahu static void iwl_pcie_apply_destination_ini(struct iwl_trans *trans) 885593fae3eSShahar S Matityahu { 886593fae3eSShahar S Matityahu enum iwl_fw_ini_allocation_id alloc_id = IWL_FW_INI_ALLOCATION_ID_DBGC1; 887593fae3eSShahar S Matityahu struct iwl_fw_ini_allocation_tlv *fw_mon_cfg = 888593fae3eSShahar S Matityahu &trans->dbg.fw_mon_cfg[alloc_id]; 889593fae3eSShahar S Matityahu struct iwl_dram_data *frag; 890593fae3eSShahar S Matityahu 891593fae3eSShahar S Matityahu if (!iwl_trans_dbg_ini_valid(trans)) 892593fae3eSShahar S Matityahu return; 893593fae3eSShahar S Matityahu 894593fae3eSShahar S Matityahu if (le32_to_cpu(fw_mon_cfg->buf_location) == 895593fae3eSShahar S Matityahu IWL_FW_INI_LOCATION_SRAM_PATH) { 896593fae3eSShahar S Matityahu IWL_DEBUG_FW(trans, "WRT: Applying SMEM buffer destination\n"); 897593fae3eSShahar S Matityahu /* set sram monitor by enabling bit 7 */ 898593fae3eSShahar S Matityahu iwl_set_bit(trans, CSR_HW_IF_CONFIG_REG, 899593fae3eSShahar S Matityahu CSR_HW_IF_CONFIG_REG_BIT_MONITOR_SRAM); 900593fae3eSShahar S Matityahu 901593fae3eSShahar S Matityahu return; 902593fae3eSShahar S Matityahu } 903593fae3eSShahar S Matityahu 904593fae3eSShahar S Matityahu if (le32_to_cpu(fw_mon_cfg->buf_location) != 905593fae3eSShahar S Matityahu IWL_FW_INI_LOCATION_DRAM_PATH || 906593fae3eSShahar S Matityahu !trans->dbg.fw_mon_ini[alloc_id].num_frags) 907593fae3eSShahar S Matityahu return; 908593fae3eSShahar S Matityahu 909593fae3eSShahar S Matityahu frag = &trans->dbg.fw_mon_ini[alloc_id].frags[0]; 910593fae3eSShahar S Matityahu 911593fae3eSShahar S Matityahu IWL_DEBUG_FW(trans, "WRT: Applying DRAM destination (alloc_id=%u)\n", 912593fae3eSShahar S Matityahu alloc_id); 913593fae3eSShahar S Matityahu 914593fae3eSShahar S Matityahu iwl_write_umac_prph(trans, MON_BUFF_BASE_ADDR_VER2, 915593fae3eSShahar S Matityahu frag->physical >> MON_BUFF_SHIFT_VER2); 916593fae3eSShahar S Matityahu iwl_write_umac_prph(trans, MON_BUFF_END_ADDR_VER2, 917593fae3eSShahar S Matityahu (frag->physical + frag->size - 256) >> 918593fae3eSShahar S Matityahu MON_BUFF_SHIFT_VER2); 919593fae3eSShahar S Matityahu } 920593fae3eSShahar S Matityahu 921c9be849dSLiad Kaufman void iwl_pcie_apply_destination(struct iwl_trans *trans) 922e705c121SKalle Valo { 92391c28b83SShahar S Matityahu const struct iwl_fw_dbg_dest_tlv_v1 *dest = trans->dbg.dest_tlv; 92469f0e505SShahar S Matityahu const struct iwl_dram_data *fw_mon = &trans->dbg.fw_mon; 925e705c121SKalle Valo int i; 926e705c121SKalle Valo 927a1af4c48SShahar S Matityahu if (iwl_trans_dbg_ini_valid(trans)) { 928593fae3eSShahar S Matityahu iwl_pcie_apply_destination_ini(trans); 9297a14c23dSSara Sharon return; 9307a14c23dSSara Sharon } 9317a14c23dSSara Sharon 932e705c121SKalle Valo IWL_INFO(trans, "Applying debug destination %s\n", 933e705c121SKalle Valo get_fw_dbg_mode_string(dest->monitor_mode)); 934e705c121SKalle Valo 935e705c121SKalle Valo if (dest->monitor_mode == EXTERNAL_MODE) 936e705c121SKalle Valo iwl_pcie_alloc_fw_monitor(trans, dest->size_power); 937e705c121SKalle Valo else 938e705c121SKalle Valo IWL_WARN(trans, "PCI should have external buffer debug\n"); 939e705c121SKalle Valo 94091c28b83SShahar S Matityahu for (i = 0; i < trans->dbg.n_dest_reg; i++) { 941e705c121SKalle Valo u32 addr = le32_to_cpu(dest->reg_ops[i].addr); 942e705c121SKalle Valo u32 val = le32_to_cpu(dest->reg_ops[i].val); 943e705c121SKalle Valo 944e705c121SKalle Valo switch (dest->reg_ops[i].op) { 945e705c121SKalle Valo case CSR_ASSIGN: 946e705c121SKalle Valo iwl_write32(trans, addr, val); 947e705c121SKalle Valo break; 948e705c121SKalle Valo case CSR_SETBIT: 949e705c121SKalle Valo iwl_set_bit(trans, addr, BIT(val)); 950e705c121SKalle Valo break; 951e705c121SKalle Valo case CSR_CLEARBIT: 952e705c121SKalle Valo iwl_clear_bit(trans, addr, BIT(val)); 953e705c121SKalle Valo break; 954e705c121SKalle Valo case PRPH_ASSIGN: 955e705c121SKalle Valo iwl_write_prph(trans, addr, val); 956e705c121SKalle Valo break; 957e705c121SKalle Valo case PRPH_SETBIT: 958e705c121SKalle Valo iwl_set_bits_prph(trans, addr, BIT(val)); 959e705c121SKalle Valo break; 960e705c121SKalle Valo case PRPH_CLEARBIT: 961e705c121SKalle Valo iwl_clear_bits_prph(trans, addr, BIT(val)); 962e705c121SKalle Valo break; 963e705c121SKalle Valo case PRPH_BLOCKBIT: 964e705c121SKalle Valo if (iwl_read_prph(trans, addr) & BIT(val)) { 965e705c121SKalle Valo IWL_ERR(trans, 966e705c121SKalle Valo "BIT(%u) in address 0x%x is 1, stopping FW configuration\n", 967e705c121SKalle Valo val, addr); 968e705c121SKalle Valo goto monitor; 969e705c121SKalle Valo } 970e705c121SKalle Valo break; 971e705c121SKalle Valo default: 972e705c121SKalle Valo IWL_ERR(trans, "FW debug - unknown OP %d\n", 973e705c121SKalle Valo dest->reg_ops[i].op); 974e705c121SKalle Valo break; 975e705c121SKalle Valo } 976e705c121SKalle Valo } 977e705c121SKalle Valo 978e705c121SKalle Valo monitor: 97969f0e505SShahar S Matityahu if (dest->monitor_mode == EXTERNAL_MODE && fw_mon->size) { 980e705c121SKalle Valo iwl_write_prph(trans, le32_to_cpu(dest->base_reg), 98169f0e505SShahar S Matityahu fw_mon->physical >> dest->base_shift); 982286ca8ebSLuca Coelho if (trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_8000) 983e705c121SKalle Valo iwl_write_prph(trans, le32_to_cpu(dest->end_reg), 98469f0e505SShahar S Matityahu (fw_mon->physical + fw_mon->size - 98569f0e505SShahar S Matityahu 256) >> dest->end_shift); 98662d7476dSEmmanuel Grumbach else 98762d7476dSEmmanuel Grumbach iwl_write_prph(trans, le32_to_cpu(dest->end_reg), 98869f0e505SShahar S Matityahu (fw_mon->physical + fw_mon->size) >> 98962d7476dSEmmanuel Grumbach dest->end_shift); 990e705c121SKalle Valo } 991e705c121SKalle Valo } 992e705c121SKalle Valo 993e705c121SKalle Valo static int iwl_pcie_load_given_ucode(struct iwl_trans *trans, 994e705c121SKalle Valo const struct fw_img *image) 995e705c121SKalle Valo { 996e705c121SKalle Valo int ret = 0; 997e705c121SKalle Valo int first_ucode_section; 998e705c121SKalle Valo 999e705c121SKalle Valo IWL_DEBUG_FW(trans, "working with %s CPU\n", 1000e705c121SKalle Valo image->is_dual_cpus ? "Dual" : "Single"); 1001e705c121SKalle Valo 1002e705c121SKalle Valo /* load to FW the binary non secured sections of CPU1 */ 1003e705c121SKalle Valo ret = iwl_pcie_load_cpu_sections(trans, image, 1, &first_ucode_section); 1004e705c121SKalle Valo if (ret) 1005e705c121SKalle Valo return ret; 1006e705c121SKalle Valo 1007e705c121SKalle Valo if (image->is_dual_cpus) { 1008e705c121SKalle Valo /* set CPU2 header address */ 1009e705c121SKalle Valo iwl_write_prph(trans, 1010e705c121SKalle Valo LMPM_SECURE_UCODE_LOAD_CPU2_HDR_ADDR, 1011e705c121SKalle Valo LMPM_SECURE_CPU2_HDR_MEM_SPACE); 1012e705c121SKalle Valo 1013e705c121SKalle Valo /* load to FW the binary sections of CPU2 */ 1014e705c121SKalle Valo ret = iwl_pcie_load_cpu_sections(trans, image, 2, 1015e705c121SKalle Valo &first_ucode_section); 1016e705c121SKalle Valo if (ret) 1017e705c121SKalle Valo return ret; 1018e705c121SKalle Valo } 1019e705c121SKalle Valo 10209efab1adSEmmanuel Grumbach if (iwl_pcie_dbg_on(trans)) 1021e705c121SKalle Valo iwl_pcie_apply_destination(trans); 1022e705c121SKalle Valo 10232aabdbdcSEmmanuel Grumbach iwl_enable_interrupts(trans); 10242aabdbdcSEmmanuel Grumbach 1025e705c121SKalle Valo /* release CPU reset */ 1026e705c121SKalle Valo iwl_write32(trans, CSR_RESET, 0); 1027e705c121SKalle Valo 1028e705c121SKalle Valo return 0; 1029e705c121SKalle Valo } 1030e705c121SKalle Valo 1031e705c121SKalle Valo static int iwl_pcie_load_given_ucode_8000(struct iwl_trans *trans, 1032e705c121SKalle Valo const struct fw_img *image) 1033e705c121SKalle Valo { 1034e705c121SKalle Valo int ret = 0; 1035e705c121SKalle Valo int first_ucode_section; 1036e705c121SKalle Valo 1037e705c121SKalle Valo IWL_DEBUG_FW(trans, "working with %s CPU\n", 1038e705c121SKalle Valo image->is_dual_cpus ? "Dual" : "Single"); 1039e705c121SKalle Valo 10407a14c23dSSara Sharon if (iwl_pcie_dbg_on(trans)) 1041e705c121SKalle Valo iwl_pcie_apply_destination(trans); 1042e705c121SKalle Valo 104382ea7966SSara Sharon IWL_DEBUG_POWER(trans, "Original WFPM value = 0x%08X\n", 104482ea7966SSara Sharon iwl_read_prph(trans, WFPM_GP2)); 104582ea7966SSara Sharon 104682ea7966SSara Sharon /* 104782ea7966SSara Sharon * Set default value. On resume reading the values that were 104882ea7966SSara Sharon * zeored can provide debug data on the resume flow. 104982ea7966SSara Sharon * This is for debugging only and has no functional impact. 105082ea7966SSara Sharon */ 105182ea7966SSara Sharon iwl_write_prph(trans, WFPM_GP2, 0x01010101); 105282ea7966SSara Sharon 1053e705c121SKalle Valo /* configure the ucode to be ready to get the secured image */ 1054e705c121SKalle Valo /* release CPU reset */ 1055e705c121SKalle Valo iwl_write_prph(trans, RELEASE_CPU_RESET, RELEASE_CPU_RESET_BIT); 1056e705c121SKalle Valo 1057e705c121SKalle Valo /* load to FW the binary Secured sections of CPU1 */ 1058e705c121SKalle Valo ret = iwl_pcie_load_cpu_sections_8000(trans, image, 1, 1059e705c121SKalle Valo &first_ucode_section); 1060e705c121SKalle Valo if (ret) 1061e705c121SKalle Valo return ret; 1062e705c121SKalle Valo 1063e705c121SKalle Valo /* load to FW the binary sections of CPU2 */ 1064e705c121SKalle Valo return iwl_pcie_load_cpu_sections_8000(trans, image, 2, 1065e705c121SKalle Valo &first_ucode_section); 1066e705c121SKalle Valo } 1067e705c121SKalle Valo 10689ad8fd0bSJohannes Berg bool iwl_pcie_check_hw_rf_kill(struct iwl_trans *trans) 1069727c02dfSSara Sharon { 1070326477e4SJohannes Berg struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); 1071727c02dfSSara Sharon bool hw_rfkill = iwl_is_rfkill_set(trans); 1072326477e4SJohannes Berg bool prev = test_bit(STATUS_RFKILL_OPMODE, &trans->status); 1073326477e4SJohannes Berg bool report; 1074727c02dfSSara Sharon 1075326477e4SJohannes Berg if (hw_rfkill) { 1076326477e4SJohannes Berg set_bit(STATUS_RFKILL_HW, &trans->status); 1077326477e4SJohannes Berg set_bit(STATUS_RFKILL_OPMODE, &trans->status); 1078326477e4SJohannes Berg } else { 1079326477e4SJohannes Berg clear_bit(STATUS_RFKILL_HW, &trans->status); 1080326477e4SJohannes Berg if (trans_pcie->opmode_down) 1081326477e4SJohannes Berg clear_bit(STATUS_RFKILL_OPMODE, &trans->status); 1082326477e4SJohannes Berg } 1083727c02dfSSara Sharon 1084326477e4SJohannes Berg report = test_bit(STATUS_RFKILL_OPMODE, &trans->status); 1085326477e4SJohannes Berg 1086326477e4SJohannes Berg if (prev != report) 1087326477e4SJohannes Berg iwl_trans_pcie_rf_kill(trans, report); 1088727c02dfSSara Sharon 1089727c02dfSSara Sharon return hw_rfkill; 1090727c02dfSSara Sharon } 1091727c02dfSSara Sharon 10927ca00409SHaim Dreyfuss struct iwl_causes_list { 10937ca00409SHaim Dreyfuss u32 cause_num; 10947ca00409SHaim Dreyfuss u32 mask_reg; 10957ca00409SHaim Dreyfuss u8 addr; 10967ca00409SHaim Dreyfuss }; 10977ca00409SHaim Dreyfuss 10987ca00409SHaim Dreyfuss static struct iwl_causes_list causes_list[] = { 10997ca00409SHaim Dreyfuss {MSIX_FH_INT_CAUSES_D2S_CH0_NUM, CSR_MSIX_FH_INT_MASK_AD, 0}, 11007ca00409SHaim Dreyfuss {MSIX_FH_INT_CAUSES_D2S_CH1_NUM, CSR_MSIX_FH_INT_MASK_AD, 0x1}, 11017ca00409SHaim Dreyfuss {MSIX_FH_INT_CAUSES_S2D, CSR_MSIX_FH_INT_MASK_AD, 0x3}, 11027ca00409SHaim Dreyfuss {MSIX_FH_INT_CAUSES_FH_ERR, CSR_MSIX_FH_INT_MASK_AD, 0x5}, 11037ca00409SHaim Dreyfuss {MSIX_HW_INT_CAUSES_REG_ALIVE, CSR_MSIX_HW_INT_MASK_AD, 0x10}, 11047ca00409SHaim Dreyfuss {MSIX_HW_INT_CAUSES_REG_WAKEUP, CSR_MSIX_HW_INT_MASK_AD, 0x11}, 1105ff911dcaSShaul Triebitz {MSIX_HW_INT_CAUSES_REG_IML, CSR_MSIX_HW_INT_MASK_AD, 0x12}, 11067ca00409SHaim Dreyfuss {MSIX_HW_INT_CAUSES_REG_CT_KILL, CSR_MSIX_HW_INT_MASK_AD, 0x16}, 11077ca00409SHaim Dreyfuss {MSIX_HW_INT_CAUSES_REG_RF_KILL, CSR_MSIX_HW_INT_MASK_AD, 0x17}, 11087ca00409SHaim Dreyfuss {MSIX_HW_INT_CAUSES_REG_PERIODIC, CSR_MSIX_HW_INT_MASK_AD, 0x18}, 11097ca00409SHaim Dreyfuss {MSIX_HW_INT_CAUSES_REG_SW_ERR, CSR_MSIX_HW_INT_MASK_AD, 0x29}, 11107ca00409SHaim Dreyfuss {MSIX_HW_INT_CAUSES_REG_SCD, CSR_MSIX_HW_INT_MASK_AD, 0x2A}, 11117ca00409SHaim Dreyfuss {MSIX_HW_INT_CAUSES_REG_FH_TX, CSR_MSIX_HW_INT_MASK_AD, 0x2B}, 11127ca00409SHaim Dreyfuss {MSIX_HW_INT_CAUSES_REG_HW_ERR, CSR_MSIX_HW_INT_MASK_AD, 0x2D}, 11137ca00409SHaim Dreyfuss {MSIX_HW_INT_CAUSES_REG_HAP, CSR_MSIX_HW_INT_MASK_AD, 0x2E}, 11147ca00409SHaim Dreyfuss }; 11157ca00409SHaim Dreyfuss 11167ca00409SHaim Dreyfuss static void iwl_pcie_map_non_rx_causes(struct iwl_trans *trans) 11177ca00409SHaim Dreyfuss { 11187ca00409SHaim Dreyfuss struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); 11197ca00409SHaim Dreyfuss int val = trans_pcie->def_irq | MSIX_NON_AUTO_CLEAR_CAUSE; 11203681021fSJohannes Berg int i, arr_size = ARRAY_SIZE(causes_list); 11213681021fSJohannes Berg struct iwl_causes_list *causes = causes_list; 11227ca00409SHaim Dreyfuss 11237ca00409SHaim Dreyfuss /* 11247ca00409SHaim Dreyfuss * Access all non RX causes and map them to the default irq. 11257ca00409SHaim Dreyfuss * In case we are missing at least one interrupt vector, 11267ca00409SHaim Dreyfuss * the first interrupt vector will serve non-RX and FBQ causes. 11277ca00409SHaim Dreyfuss */ 11289b58419eSGolan Ben Ami for (i = 0; i < arr_size; i++) { 11299b58419eSGolan Ben Ami iwl_write8(trans, CSR_MSIX_IVAR(causes[i].addr), val); 11309b58419eSGolan Ben Ami iwl_clear_bit(trans, causes[i].mask_reg, 11319b58419eSGolan Ben Ami causes[i].cause_num); 11327ca00409SHaim Dreyfuss } 11337ca00409SHaim Dreyfuss } 11347ca00409SHaim Dreyfuss 11357ca00409SHaim Dreyfuss static void iwl_pcie_map_rx_causes(struct iwl_trans *trans) 11367ca00409SHaim Dreyfuss { 11377ca00409SHaim Dreyfuss struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); 11387ca00409SHaim Dreyfuss u32 offset = 11397ca00409SHaim Dreyfuss trans_pcie->shared_vec_mask & IWL_SHARED_IRQ_FIRST_RSS ? 1 : 0; 11407ca00409SHaim Dreyfuss u32 val, idx; 11417ca00409SHaim Dreyfuss 11427ca00409SHaim Dreyfuss /* 11437ca00409SHaim Dreyfuss * The first RX queue - fallback queue, which is designated for 11447ca00409SHaim Dreyfuss * management frame, command responses etc, is always mapped to the 11457ca00409SHaim Dreyfuss * first interrupt vector. The other RX queues are mapped to 11467ca00409SHaim Dreyfuss * the other (N - 2) interrupt vectors. 11477ca00409SHaim Dreyfuss */ 11487ca00409SHaim Dreyfuss val = BIT(MSIX_FH_INT_CAUSES_Q(0)); 11497ca00409SHaim Dreyfuss for (idx = 1; idx < trans->num_rx_queues; idx++) { 11507ca00409SHaim Dreyfuss iwl_write8(trans, CSR_MSIX_RX_IVAR(idx), 11517ca00409SHaim Dreyfuss MSIX_FH_INT_CAUSES_Q(idx - offset)); 11527ca00409SHaim Dreyfuss val |= BIT(MSIX_FH_INT_CAUSES_Q(idx)); 11537ca00409SHaim Dreyfuss } 11547ca00409SHaim Dreyfuss iwl_write32(trans, CSR_MSIX_FH_INT_MASK_AD, ~val); 11557ca00409SHaim Dreyfuss 11567ca00409SHaim Dreyfuss val = MSIX_FH_INT_CAUSES_Q(0); 11577ca00409SHaim Dreyfuss if (trans_pcie->shared_vec_mask & IWL_SHARED_IRQ_NON_RX) 11587ca00409SHaim Dreyfuss val |= MSIX_NON_AUTO_CLEAR_CAUSE; 11597ca00409SHaim Dreyfuss iwl_write8(trans, CSR_MSIX_RX_IVAR(0), val); 11607ca00409SHaim Dreyfuss 11617ca00409SHaim Dreyfuss if (trans_pcie->shared_vec_mask & IWL_SHARED_IRQ_FIRST_RSS) 11627ca00409SHaim Dreyfuss iwl_write8(trans, CSR_MSIX_RX_IVAR(1), val); 11637ca00409SHaim Dreyfuss } 11647ca00409SHaim Dreyfuss 116577c09bc8SSara Sharon void iwl_pcie_conf_msix_hw(struct iwl_trans_pcie *trans_pcie) 11667ca00409SHaim Dreyfuss { 11677ca00409SHaim Dreyfuss struct iwl_trans *trans = trans_pcie->trans; 11687ca00409SHaim Dreyfuss 11697ca00409SHaim Dreyfuss if (!trans_pcie->msix_enabled) { 1170286ca8ebSLuca Coelho if (trans->trans_cfg->mq_rx_supported && 1171d7270d61SHaim Dreyfuss test_bit(STATUS_DEVICE_ENABLED, &trans->status)) 1172ea695b7cSShaul Triebitz iwl_write_umac_prph(trans, UREG_CHICK, 11737ca00409SHaim Dreyfuss UREG_CHICK_MSI_ENABLE); 11747ca00409SHaim Dreyfuss return; 11757ca00409SHaim Dreyfuss } 1176d7270d61SHaim Dreyfuss /* 1177d7270d61SHaim Dreyfuss * The IVAR table needs to be configured again after reset, 1178d7270d61SHaim Dreyfuss * but if the device is disabled, we can't write to 1179d7270d61SHaim Dreyfuss * prph. 1180d7270d61SHaim Dreyfuss */ 1181d7270d61SHaim Dreyfuss if (test_bit(STATUS_DEVICE_ENABLED, &trans->status)) 1182ea695b7cSShaul Triebitz iwl_write_umac_prph(trans, UREG_CHICK, UREG_CHICK_MSIX_ENABLE); 11837ca00409SHaim Dreyfuss 11847ca00409SHaim Dreyfuss /* 11857ca00409SHaim Dreyfuss * Each cause from the causes list above and the RX causes is 11867ca00409SHaim Dreyfuss * represented as a byte in the IVAR table. The first nibble 11877ca00409SHaim Dreyfuss * represents the bound interrupt vector of the cause, the second 11887ca00409SHaim Dreyfuss * represents no auto clear for this cause. This will be set if its 11897ca00409SHaim Dreyfuss * interrupt vector is bound to serve other causes. 11907ca00409SHaim Dreyfuss */ 11917ca00409SHaim Dreyfuss iwl_pcie_map_rx_causes(trans); 11927ca00409SHaim Dreyfuss 11937ca00409SHaim Dreyfuss iwl_pcie_map_non_rx_causes(trans); 119483730058SHaim Dreyfuss } 11957ca00409SHaim Dreyfuss 119683730058SHaim Dreyfuss static void iwl_pcie_init_msix(struct iwl_trans_pcie *trans_pcie) 119783730058SHaim Dreyfuss { 119883730058SHaim Dreyfuss struct iwl_trans *trans = trans_pcie->trans; 119983730058SHaim Dreyfuss 120083730058SHaim Dreyfuss iwl_pcie_conf_msix_hw(trans_pcie); 120183730058SHaim Dreyfuss 120283730058SHaim Dreyfuss if (!trans_pcie->msix_enabled) 120383730058SHaim Dreyfuss return; 120483730058SHaim Dreyfuss 120583730058SHaim Dreyfuss trans_pcie->fh_init_mask = ~iwl_read32(trans, CSR_MSIX_FH_INT_MASK_AD); 12067ca00409SHaim Dreyfuss trans_pcie->fh_mask = trans_pcie->fh_init_mask; 120783730058SHaim Dreyfuss trans_pcie->hw_init_mask = ~iwl_read32(trans, CSR_MSIX_HW_INT_MASK_AD); 12087ca00409SHaim Dreyfuss trans_pcie->hw_mask = trans_pcie->hw_init_mask; 12097ca00409SHaim Dreyfuss } 12107ca00409SHaim Dreyfuss 1211bab3cb92SEmmanuel Grumbach static void _iwl_trans_pcie_stop_device(struct iwl_trans *trans) 1212e705c121SKalle Valo { 1213e705c121SKalle Valo struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); 1214e705c121SKalle Valo 1215e705c121SKalle Valo lockdep_assert_held(&trans_pcie->mutex); 1216e705c121SKalle Valo 1217e705c121SKalle Valo if (trans_pcie->is_down) 1218e705c121SKalle Valo return; 1219e705c121SKalle Valo 1220e705c121SKalle Valo trans_pcie->is_down = true; 1221e705c121SKalle Valo 1222e705c121SKalle Valo /* tell the device to stop sending interrupts */ 1223e705c121SKalle Valo iwl_disable_interrupts(trans); 1224e705c121SKalle Valo 1225e705c121SKalle Valo /* device going down, Stop using ICT table */ 1226e705c121SKalle Valo iwl_pcie_disable_ict(trans); 1227e705c121SKalle Valo 1228e705c121SKalle Valo /* 1229e705c121SKalle Valo * If a HW restart happens during firmware loading, 1230e705c121SKalle Valo * then the firmware loading might call this function 1231e705c121SKalle Valo * and later it might be called again due to the 1232e705c121SKalle Valo * restart. So don't process again if the device is 1233e705c121SKalle Valo * already dead. 1234e705c121SKalle Valo */ 1235e705c121SKalle Valo if (test_and_clear_bit(STATUS_DEVICE_ENABLED, &trans->status)) { 1236a6bd005fSEmmanuel Grumbach IWL_DEBUG_INFO(trans, 1237a6bd005fSEmmanuel Grumbach "DEVICE_ENABLED bit was set and is now cleared\n"); 1238e705c121SKalle Valo iwl_pcie_tx_stop(trans); 1239e705c121SKalle Valo iwl_pcie_rx_stop(trans); 1240e705c121SKalle Valo 1241e705c121SKalle Valo /* Power-down device's busmaster DMA clocks */ 1242e705c121SKalle Valo if (!trans->cfg->apmg_not_supported) { 1243e705c121SKalle Valo iwl_write_prph(trans, APMG_CLK_DIS_REG, 1244e705c121SKalle Valo APMG_CLK_VAL_DMA_CLK_RQT); 1245e705c121SKalle Valo udelay(5); 1246e705c121SKalle Valo } 1247e705c121SKalle Valo } 1248e705c121SKalle Valo 1249e705c121SKalle Valo /* Make sure (redundant) we've released our request to stay awake */ 1250e705c121SKalle Valo iwl_clear_bit(trans, CSR_GP_CNTRL, 12516dece0e9SLuca Coelho CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ); 1252e705c121SKalle Valo 1253e705c121SKalle Valo /* Stop the device, and put it in low power state */ 1254e705c121SKalle Valo iwl_pcie_apm_stop(trans, false); 1255e705c121SKalle Valo 1256870c2a11SGolan Ben Ami iwl_trans_pcie_sw_reset(trans); 1257e705c121SKalle Valo 1258e705c121SKalle Valo /* 1259f4a1f04aSGolan Ben Ami * Upon stop, the IVAR table gets erased, so msi-x won't 1260f4a1f04aSGolan Ben Ami * work. This causes a bug in RF-KILL flows, since the interrupt 1261f4a1f04aSGolan Ben Ami * that enables radio won't fire on the correct irq, and the 1262f4a1f04aSGolan Ben Ami * driver won't be able to handle the interrupt. 1263f4a1f04aSGolan Ben Ami * Configure the IVAR table again after reset. 1264f4a1f04aSGolan Ben Ami */ 1265f4a1f04aSGolan Ben Ami iwl_pcie_conf_msix_hw(trans_pcie); 1266f4a1f04aSGolan Ben Ami 1267f4a1f04aSGolan Ben Ami /* 1268e705c121SKalle Valo * Upon stop, the APM issues an interrupt if HW RF kill is set. 1269e705c121SKalle Valo * This is a bug in certain verions of the hardware. 1270e705c121SKalle Valo * Certain devices also keep sending HW RF kill interrupt all 1271e705c121SKalle Valo * the time, unless the interrupt is ACKed even if the interrupt 1272e705c121SKalle Valo * should be masked. Re-ACK all the interrupts here. 1273e705c121SKalle Valo */ 1274e705c121SKalle Valo iwl_disable_interrupts(trans); 1275e705c121SKalle Valo 1276e705c121SKalle Valo /* clear all status bits */ 1277e705c121SKalle Valo clear_bit(STATUS_SYNC_HCMD_ACTIVE, &trans->status); 1278e705c121SKalle Valo clear_bit(STATUS_INT_ENABLED, &trans->status); 1279e705c121SKalle Valo clear_bit(STATUS_TPOWER_PMI, &trans->status); 1280e705c121SKalle Valo 1281e705c121SKalle Valo /* 1282e705c121SKalle Valo * Even if we stop the HW, we still want the RF kill 1283e705c121SKalle Valo * interrupt 1284e705c121SKalle Valo */ 1285e705c121SKalle Valo iwl_enable_rfkill_int(trans); 1286e705c121SKalle Valo 1287a6bd005fSEmmanuel Grumbach /* re-take ownership to prevent other users from stealing the device */ 1288e705c121SKalle Valo iwl_pcie_prepare_card_hw(trans); 1289e705c121SKalle Valo } 1290e705c121SKalle Valo 1291eda50cdeSSara Sharon void iwl_pcie_synchronize_irqs(struct iwl_trans *trans) 12922e5d4a8fSHaim Dreyfuss { 12932e5d4a8fSHaim Dreyfuss struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); 12942e5d4a8fSHaim Dreyfuss 12952e5d4a8fSHaim Dreyfuss if (trans_pcie->msix_enabled) { 12962e5d4a8fSHaim Dreyfuss int i; 12972e5d4a8fSHaim Dreyfuss 1298496d83caSHaim Dreyfuss for (i = 0; i < trans_pcie->alloc_vecs; i++) 12992e5d4a8fSHaim Dreyfuss synchronize_irq(trans_pcie->msix_entries[i].vector); 13002e5d4a8fSHaim Dreyfuss } else { 13012e5d4a8fSHaim Dreyfuss synchronize_irq(trans_pcie->pci_dev->irq); 13022e5d4a8fSHaim Dreyfuss } 13032e5d4a8fSHaim Dreyfuss } 13042e5d4a8fSHaim Dreyfuss 1305a6bd005fSEmmanuel Grumbach static int iwl_trans_pcie_start_fw(struct iwl_trans *trans, 1306a6bd005fSEmmanuel Grumbach const struct fw_img *fw, bool run_in_rfkill) 1307a6bd005fSEmmanuel Grumbach { 1308a6bd005fSEmmanuel Grumbach struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); 1309a6bd005fSEmmanuel Grumbach bool hw_rfkill; 1310a6bd005fSEmmanuel Grumbach int ret; 1311a6bd005fSEmmanuel Grumbach 1312a6bd005fSEmmanuel Grumbach /* This may fail if AMT took ownership of the device */ 1313a6bd005fSEmmanuel Grumbach if (iwl_pcie_prepare_card_hw(trans)) { 1314a6bd005fSEmmanuel Grumbach IWL_WARN(trans, "Exit HW not ready\n"); 1315a6bd005fSEmmanuel Grumbach ret = -EIO; 1316a6bd005fSEmmanuel Grumbach goto out; 1317a6bd005fSEmmanuel Grumbach } 1318a6bd005fSEmmanuel Grumbach 1319a6bd005fSEmmanuel Grumbach iwl_enable_rfkill_int(trans); 1320a6bd005fSEmmanuel Grumbach 1321a6bd005fSEmmanuel Grumbach iwl_write32(trans, CSR_INT, 0xFFFFFFFF); 1322a6bd005fSEmmanuel Grumbach 1323a6bd005fSEmmanuel Grumbach /* 1324a6bd005fSEmmanuel Grumbach * We enabled the RF-Kill interrupt and the handler may very 1325a6bd005fSEmmanuel Grumbach * well be running. Disable the interrupts to make sure no other 1326a6bd005fSEmmanuel Grumbach * interrupt can be fired. 1327a6bd005fSEmmanuel Grumbach */ 1328a6bd005fSEmmanuel Grumbach iwl_disable_interrupts(trans); 1329a6bd005fSEmmanuel Grumbach 1330a6bd005fSEmmanuel Grumbach /* Make sure it finished running */ 13312e5d4a8fSHaim Dreyfuss iwl_pcie_synchronize_irqs(trans); 1332a6bd005fSEmmanuel Grumbach 1333a6bd005fSEmmanuel Grumbach mutex_lock(&trans_pcie->mutex); 1334a6bd005fSEmmanuel Grumbach 1335a6bd005fSEmmanuel Grumbach /* If platform's RF_KILL switch is NOT set to KILL */ 13369ad8fd0bSJohannes Berg hw_rfkill = iwl_pcie_check_hw_rf_kill(trans); 1337a6bd005fSEmmanuel Grumbach if (hw_rfkill && !run_in_rfkill) { 1338a6bd005fSEmmanuel Grumbach ret = -ERFKILL; 1339a6bd005fSEmmanuel Grumbach goto out; 1340a6bd005fSEmmanuel Grumbach } 1341a6bd005fSEmmanuel Grumbach 1342a6bd005fSEmmanuel Grumbach /* Someone called stop_device, don't try to start_fw */ 1343a6bd005fSEmmanuel Grumbach if (trans_pcie->is_down) { 1344a6bd005fSEmmanuel Grumbach IWL_WARN(trans, 1345a6bd005fSEmmanuel Grumbach "Can't start_fw since the HW hasn't been started\n"); 134620aa99bbSAnton Protopopov ret = -EIO; 1347a6bd005fSEmmanuel Grumbach goto out; 1348a6bd005fSEmmanuel Grumbach } 1349a6bd005fSEmmanuel Grumbach 1350a6bd005fSEmmanuel Grumbach /* make sure rfkill handshake bits are cleared */ 1351a6bd005fSEmmanuel Grumbach iwl_write32(trans, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL); 1352a6bd005fSEmmanuel Grumbach iwl_write32(trans, CSR_UCODE_DRV_GP1_CLR, 1353a6bd005fSEmmanuel Grumbach CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED); 1354a6bd005fSEmmanuel Grumbach 1355a6bd005fSEmmanuel Grumbach /* clear (again), then enable host interrupts */ 1356a6bd005fSEmmanuel Grumbach iwl_write32(trans, CSR_INT, 0xFFFFFFFF); 1357a6bd005fSEmmanuel Grumbach 1358a6bd005fSEmmanuel Grumbach ret = iwl_pcie_nic_init(trans); 1359a6bd005fSEmmanuel Grumbach if (ret) { 1360a6bd005fSEmmanuel Grumbach IWL_ERR(trans, "Unable to init nic\n"); 1361a6bd005fSEmmanuel Grumbach goto out; 1362a6bd005fSEmmanuel Grumbach } 1363a6bd005fSEmmanuel Grumbach 1364a6bd005fSEmmanuel Grumbach /* 1365a6bd005fSEmmanuel Grumbach * Now, we load the firmware and don't want to be interrupted, even 1366a6bd005fSEmmanuel Grumbach * by the RF-Kill interrupt (hence mask all the interrupt besides the 1367a6bd005fSEmmanuel Grumbach * FH_TX interrupt which is needed to load the firmware). If the 1368a6bd005fSEmmanuel Grumbach * RF-Kill switch is toggled, we will find out after having loaded 1369a6bd005fSEmmanuel Grumbach * the firmware and return the proper value to the caller. 1370a6bd005fSEmmanuel Grumbach */ 1371a6bd005fSEmmanuel Grumbach iwl_enable_fw_load_int(trans); 1372a6bd005fSEmmanuel Grumbach 1373a6bd005fSEmmanuel Grumbach /* really make sure rfkill handshake bits are cleared */ 1374a6bd005fSEmmanuel Grumbach iwl_write32(trans, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL); 1375a6bd005fSEmmanuel Grumbach iwl_write32(trans, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL); 1376a6bd005fSEmmanuel Grumbach 1377a6bd005fSEmmanuel Grumbach /* Load the given image to the HW */ 1378286ca8ebSLuca Coelho if (trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_8000) 1379a6bd005fSEmmanuel Grumbach ret = iwl_pcie_load_given_ucode_8000(trans, fw); 1380a6bd005fSEmmanuel Grumbach else 1381a6bd005fSEmmanuel Grumbach ret = iwl_pcie_load_given_ucode(trans, fw); 1382a6bd005fSEmmanuel Grumbach 1383a6bd005fSEmmanuel Grumbach /* re-check RF-Kill state since we may have missed the interrupt */ 13849ad8fd0bSJohannes Berg hw_rfkill = iwl_pcie_check_hw_rf_kill(trans); 1385a6bd005fSEmmanuel Grumbach if (hw_rfkill && !run_in_rfkill) 1386a6bd005fSEmmanuel Grumbach ret = -ERFKILL; 1387a6bd005fSEmmanuel Grumbach 1388a6bd005fSEmmanuel Grumbach out: 1389a6bd005fSEmmanuel Grumbach mutex_unlock(&trans_pcie->mutex); 1390a6bd005fSEmmanuel Grumbach return ret; 1391a6bd005fSEmmanuel Grumbach } 1392a6bd005fSEmmanuel Grumbach 1393a6bd005fSEmmanuel Grumbach static void iwl_trans_pcie_fw_alive(struct iwl_trans *trans, u32 scd_addr) 1394a6bd005fSEmmanuel Grumbach { 1395a6bd005fSEmmanuel Grumbach iwl_pcie_reset_ict(trans); 1396a6bd005fSEmmanuel Grumbach iwl_pcie_tx_start(trans, scd_addr); 1397a6bd005fSEmmanuel Grumbach } 1398a6bd005fSEmmanuel Grumbach 1399326477e4SJohannes Berg void iwl_trans_pcie_handle_stop_rfkill(struct iwl_trans *trans, 1400326477e4SJohannes Berg bool was_in_rfkill) 1401326477e4SJohannes Berg { 1402326477e4SJohannes Berg bool hw_rfkill; 1403326477e4SJohannes Berg 1404326477e4SJohannes Berg /* 1405326477e4SJohannes Berg * Check again since the RF kill state may have changed while 1406326477e4SJohannes Berg * all the interrupts were disabled, in this case we couldn't 1407326477e4SJohannes Berg * receive the RF kill interrupt and update the state in the 1408326477e4SJohannes Berg * op_mode. 1409326477e4SJohannes Berg * Don't call the op_mode if the rkfill state hasn't changed. 1410326477e4SJohannes Berg * This allows the op_mode to call stop_device from the rfkill 1411326477e4SJohannes Berg * notification without endless recursion. Under very rare 1412326477e4SJohannes Berg * circumstances, we might have a small recursion if the rfkill 1413326477e4SJohannes Berg * state changed exactly now while we were called from stop_device. 1414326477e4SJohannes Berg * This is very unlikely but can happen and is supported. 1415326477e4SJohannes Berg */ 1416326477e4SJohannes Berg hw_rfkill = iwl_is_rfkill_set(trans); 1417326477e4SJohannes Berg if (hw_rfkill) { 1418326477e4SJohannes Berg set_bit(STATUS_RFKILL_HW, &trans->status); 1419326477e4SJohannes Berg set_bit(STATUS_RFKILL_OPMODE, &trans->status); 1420326477e4SJohannes Berg } else { 1421326477e4SJohannes Berg clear_bit(STATUS_RFKILL_HW, &trans->status); 1422326477e4SJohannes Berg clear_bit(STATUS_RFKILL_OPMODE, &trans->status); 1423326477e4SJohannes Berg } 1424326477e4SJohannes Berg if (hw_rfkill != was_in_rfkill) 1425326477e4SJohannes Berg iwl_trans_pcie_rf_kill(trans, hw_rfkill); 1426326477e4SJohannes Berg } 1427326477e4SJohannes Berg 1428bab3cb92SEmmanuel Grumbach static void iwl_trans_pcie_stop_device(struct iwl_trans *trans) 1429e705c121SKalle Valo { 1430e705c121SKalle Valo struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); 1431326477e4SJohannes Berg bool was_in_rfkill; 1432e705c121SKalle Valo 1433e705c121SKalle Valo mutex_lock(&trans_pcie->mutex); 1434326477e4SJohannes Berg trans_pcie->opmode_down = true; 1435326477e4SJohannes Berg was_in_rfkill = test_bit(STATUS_RFKILL_OPMODE, &trans->status); 1436bab3cb92SEmmanuel Grumbach _iwl_trans_pcie_stop_device(trans); 1437326477e4SJohannes Berg iwl_trans_pcie_handle_stop_rfkill(trans, was_in_rfkill); 1438e705c121SKalle Valo mutex_unlock(&trans_pcie->mutex); 1439e705c121SKalle Valo } 1440e705c121SKalle Valo 1441e705c121SKalle Valo void iwl_trans_pcie_rf_kill(struct iwl_trans *trans, bool state) 1442e705c121SKalle Valo { 1443e705c121SKalle Valo struct iwl_trans_pcie __maybe_unused *trans_pcie = 1444e705c121SKalle Valo IWL_TRANS_GET_PCIE_TRANS(trans); 1445e705c121SKalle Valo 1446e705c121SKalle Valo lockdep_assert_held(&trans_pcie->mutex); 1447e705c121SKalle Valo 1448326477e4SJohannes Berg IWL_WARN(trans, "reporting RF_KILL (radio %s)\n", 1449326477e4SJohannes Berg state ? "disabled" : "enabled"); 145077c09bc8SSara Sharon if (iwl_op_mode_hw_rf_kill(trans->op_mode, state)) { 1451286ca8ebSLuca Coelho if (trans->trans_cfg->gen2) 1452bab3cb92SEmmanuel Grumbach _iwl_trans_pcie_gen2_stop_device(trans); 145377c09bc8SSara Sharon else 1454bab3cb92SEmmanuel Grumbach _iwl_trans_pcie_stop_device(trans); 1455e705c121SKalle Valo } 145677c09bc8SSara Sharon } 1457e705c121SKalle Valo 1458e5f3f215SHaim Dreyfuss void iwl_pcie_d3_complete_suspend(struct iwl_trans *trans, 1459e5f3f215SHaim Dreyfuss bool test, bool reset) 1460e705c121SKalle Valo { 1461e705c121SKalle Valo iwl_disable_interrupts(trans); 1462e705c121SKalle Valo 1463e705c121SKalle Valo /* 1464e705c121SKalle Valo * in testing mode, the host stays awake and the 1465e705c121SKalle Valo * hardware won't be reset (not even partially) 1466e705c121SKalle Valo */ 1467e705c121SKalle Valo if (test) 1468e705c121SKalle Valo return; 1469e705c121SKalle Valo 1470e705c121SKalle Valo iwl_pcie_disable_ict(trans); 1471e705c121SKalle Valo 14722e5d4a8fSHaim Dreyfuss iwl_pcie_synchronize_irqs(trans); 1473e705c121SKalle Valo 1474e705c121SKalle Valo iwl_clear_bit(trans, CSR_GP_CNTRL, 14756dece0e9SLuca Coelho CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ); 14766dece0e9SLuca Coelho iwl_clear_bit(trans, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE); 1477e705c121SKalle Valo 147823ae6128SMatti Gottlieb if (reset) { 1479e705c121SKalle Valo /* 1480e705c121SKalle Valo * reset TX queues -- some of their registers reset during S3 1481e705c121SKalle Valo * so if we don't reset everything here the D3 image would try 1482e705c121SKalle Valo * to execute some invalid memory upon resume 1483e705c121SKalle Valo */ 1484e705c121SKalle Valo iwl_trans_pcie_tx_reset(trans); 1485e705c121SKalle Valo } 1486e705c121SKalle Valo 1487e705c121SKalle Valo iwl_pcie_set_pwr(trans, true); 1488e705c121SKalle Valo } 1489e705c121SKalle Valo 1490e5f3f215SHaim Dreyfuss static int iwl_trans_pcie_d3_suspend(struct iwl_trans *trans, bool test, 1491e5f3f215SHaim Dreyfuss bool reset) 1492e5f3f215SHaim Dreyfuss { 1493e5f3f215SHaim Dreyfuss int ret; 1494e5f3f215SHaim Dreyfuss struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); 1495e5f3f215SHaim Dreyfuss 1496771db3a1SHaim Dreyfuss if (!reset) 1497e5f3f215SHaim Dreyfuss /* Enable persistence mode to avoid reset */ 1498e5f3f215SHaim Dreyfuss iwl_set_bit(trans, CSR_HW_IF_CONFIG_REG, 1499e5f3f215SHaim Dreyfuss CSR_HW_IF_CONFIG_REG_PERSIST_MODE); 1500e5f3f215SHaim Dreyfuss 1501e5f3f215SHaim Dreyfuss if (trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_AX210) { 1502e5f3f215SHaim Dreyfuss iwl_write_umac_prph(trans, UREG_DOORBELL_TO_ISR6, 1503e5f3f215SHaim Dreyfuss UREG_DOORBELL_TO_ISR6_SUSPEND); 1504e5f3f215SHaim Dreyfuss 1505e5f3f215SHaim Dreyfuss ret = wait_event_timeout(trans_pcie->sx_waitq, 1506e5f3f215SHaim Dreyfuss trans_pcie->sx_complete, 2 * HZ); 1507e5f3f215SHaim Dreyfuss /* 1508e5f3f215SHaim Dreyfuss * Invalidate it toward resume. 1509e5f3f215SHaim Dreyfuss */ 1510e5f3f215SHaim Dreyfuss trans_pcie->sx_complete = false; 1511e5f3f215SHaim Dreyfuss 1512e5f3f215SHaim Dreyfuss if (!ret) { 1513e5f3f215SHaim Dreyfuss IWL_ERR(trans, "Timeout entering D3\n"); 1514e5f3f215SHaim Dreyfuss return -ETIMEDOUT; 1515e5f3f215SHaim Dreyfuss } 1516e5f3f215SHaim Dreyfuss } 1517e5f3f215SHaim Dreyfuss iwl_pcie_d3_complete_suspend(trans, test, reset); 1518e5f3f215SHaim Dreyfuss 1519e5f3f215SHaim Dreyfuss return 0; 1520e5f3f215SHaim Dreyfuss } 1521e5f3f215SHaim Dreyfuss 1522e705c121SKalle Valo static int iwl_trans_pcie_d3_resume(struct iwl_trans *trans, 1523e705c121SKalle Valo enum iwl_d3_status *status, 152423ae6128SMatti Gottlieb bool test, bool reset) 1525e705c121SKalle Valo { 1526d7270d61SHaim Dreyfuss struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); 1527e705c121SKalle Valo u32 val; 1528e705c121SKalle Valo int ret; 1529e705c121SKalle Valo 1530e705c121SKalle Valo if (test) { 1531e705c121SKalle Valo iwl_enable_interrupts(trans); 1532e705c121SKalle Valo *status = IWL_D3_STATUS_ALIVE; 1533e5f3f215SHaim Dreyfuss goto out; 1534e705c121SKalle Valo } 1535e705c121SKalle Valo 1536a8cbb46fSGolan Ben Ami iwl_set_bit(trans, CSR_GP_CNTRL, 15376dece0e9SLuca Coelho CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ); 1538e705c121SKalle Valo 15397d34a7d7SLuca Coelho ret = iwl_finish_nic_init(trans, trans->trans_cfg); 1540c96b5eecSJohannes Berg if (ret) 1541e705c121SKalle Valo return ret; 1542e705c121SKalle Valo 1543f98ad635SEmmanuel Grumbach /* 1544f98ad635SEmmanuel Grumbach * Reconfigure IVAR table in case of MSIX or reset ict table in 1545f98ad635SEmmanuel Grumbach * MSI mode since HW reset erased it. 1546f98ad635SEmmanuel Grumbach * Also enables interrupts - none will happen as 1547f98ad635SEmmanuel Grumbach * the device doesn't know we're waking it up, only when 1548f98ad635SEmmanuel Grumbach * the opmode actually tells it after this call. 1549f98ad635SEmmanuel Grumbach */ 1550f98ad635SEmmanuel Grumbach iwl_pcie_conf_msix_hw(trans_pcie); 1551f98ad635SEmmanuel Grumbach if (!trans_pcie->msix_enabled) 1552f98ad635SEmmanuel Grumbach iwl_pcie_reset_ict(trans); 1553f98ad635SEmmanuel Grumbach iwl_enable_interrupts(trans); 1554f98ad635SEmmanuel Grumbach 1555e705c121SKalle Valo iwl_pcie_set_pwr(trans, false); 1556e705c121SKalle Valo 155723ae6128SMatti Gottlieb if (!reset) { 1558e705c121SKalle Valo iwl_clear_bit(trans, CSR_GP_CNTRL, 15596dece0e9SLuca Coelho CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ); 1560e705c121SKalle Valo } else { 1561e705c121SKalle Valo iwl_trans_pcie_tx_reset(trans); 1562e705c121SKalle Valo 1563e705c121SKalle Valo ret = iwl_pcie_rx_init(trans); 1564e705c121SKalle Valo if (ret) { 1565e705c121SKalle Valo IWL_ERR(trans, 1566e705c121SKalle Valo "Failed to resume the device (RX reset)\n"); 1567e705c121SKalle Valo return ret; 1568e705c121SKalle Valo } 1569e705c121SKalle Valo } 1570e705c121SKalle Valo 157182ea7966SSara Sharon IWL_DEBUG_POWER(trans, "WFPM value upon resume = 0x%08X\n", 1572ea695b7cSShaul Triebitz iwl_read_umac_prph(trans, WFPM_GP2)); 157382ea7966SSara Sharon 1574e705c121SKalle Valo val = iwl_read32(trans, CSR_RESET); 1575e705c121SKalle Valo if (val & CSR_RESET_REG_FLAG_NEVO_RESET) 1576e705c121SKalle Valo *status = IWL_D3_STATUS_RESET; 1577e705c121SKalle Valo else 1578e705c121SKalle Valo *status = IWL_D3_STATUS_ALIVE; 1579e705c121SKalle Valo 1580e5f3f215SHaim Dreyfuss out: 1581e5f3f215SHaim Dreyfuss if (*status == IWL_D3_STATUS_ALIVE && 1582e5f3f215SHaim Dreyfuss trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_AX210) { 1583e5f3f215SHaim Dreyfuss trans_pcie->sx_complete = false; 1584e5f3f215SHaim Dreyfuss iwl_write_umac_prph(trans, UREG_DOORBELL_TO_ISR6, 1585e5f3f215SHaim Dreyfuss UREG_DOORBELL_TO_ISR6_RESUME); 1586e5f3f215SHaim Dreyfuss 1587e5f3f215SHaim Dreyfuss ret = wait_event_timeout(trans_pcie->sx_waitq, 1588e5f3f215SHaim Dreyfuss trans_pcie->sx_complete, 2 * HZ); 1589e5f3f215SHaim Dreyfuss /* 1590e5f3f215SHaim Dreyfuss * Invalidate it toward next suspend. 1591e5f3f215SHaim Dreyfuss */ 1592e5f3f215SHaim Dreyfuss trans_pcie->sx_complete = false; 1593e5f3f215SHaim Dreyfuss 1594e5f3f215SHaim Dreyfuss if (!ret) { 1595e5f3f215SHaim Dreyfuss IWL_ERR(trans, "Timeout exiting D3\n"); 1596e5f3f215SHaim Dreyfuss return -ETIMEDOUT; 1597e5f3f215SHaim Dreyfuss } 1598e5f3f215SHaim Dreyfuss } 1599e705c121SKalle Valo return 0; 1600e705c121SKalle Valo } 1601e705c121SKalle Valo 16020c18714aSLuca Coelho static void 16030c18714aSLuca Coelho iwl_pcie_set_interrupt_capa(struct pci_dev *pdev, 16040c18714aSLuca Coelho struct iwl_trans *trans, 16050c18714aSLuca Coelho const struct iwl_cfg_trans_params *cfg_trans) 16062e5d4a8fSHaim Dreyfuss { 16072e5d4a8fSHaim Dreyfuss struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); 1608ab1068d6SHao Wei Tee int max_irqs, num_irqs, i, ret; 16092e5d4a8fSHaim Dreyfuss u16 pci_cmd; 16100cd38f4dSMordechay Goodstein u32 max_rx_queues = IWL_MAX_RX_HW_QUEUES; 16112e5d4a8fSHaim Dreyfuss 16120c18714aSLuca Coelho if (!cfg_trans->mq_rx_supported) 161306f4b081SSara Sharon goto enable_msi; 161406f4b081SSara Sharon 16150cd38f4dSMordechay Goodstein if (cfg_trans->device_family <= IWL_DEVICE_FAMILY_9000) 16160cd38f4dSMordechay Goodstein max_rx_queues = IWL_9000_MAX_RX_HW_QUEUES; 16170cd38f4dSMordechay Goodstein 16180cd38f4dSMordechay Goodstein max_irqs = min_t(u32, num_online_cpus() + 2, max_rx_queues); 161906f4b081SSara Sharon for (i = 0; i < max_irqs; i++) 16202e5d4a8fSHaim Dreyfuss trans_pcie->msix_entries[i].entry = i; 16212e5d4a8fSHaim Dreyfuss 162206f4b081SSara Sharon num_irqs = pci_enable_msix_range(pdev, trans_pcie->msix_entries, 16232e5d4a8fSHaim Dreyfuss MSIX_MIN_INTERRUPT_VECTORS, 162406f4b081SSara Sharon max_irqs); 162506f4b081SSara Sharon if (num_irqs < 0) { 1626496d83caSHaim Dreyfuss IWL_DEBUG_INFO(trans, 162706f4b081SSara Sharon "Failed to enable msi-x mode (ret %d). Moving to msi mode.\n", 162806f4b081SSara Sharon num_irqs); 162906f4b081SSara Sharon goto enable_msi; 1630496d83caSHaim Dreyfuss } 163106f4b081SSara Sharon trans_pcie->def_irq = (num_irqs == max_irqs) ? num_irqs - 1 : 0; 1632496d83caSHaim Dreyfuss 16332e5d4a8fSHaim Dreyfuss IWL_DEBUG_INFO(trans, 163406f4b081SSara Sharon "MSI-X enabled. %d interrupt vectors were allocated\n", 163506f4b081SSara Sharon num_irqs); 163606f4b081SSara Sharon 1637496d83caSHaim Dreyfuss /* 163806f4b081SSara Sharon * In case the OS provides fewer interrupts than requested, different 163906f4b081SSara Sharon * causes will share the same interrupt vector as follows: 1640496d83caSHaim Dreyfuss * One interrupt less: non rx causes shared with FBQ. 1641496d83caSHaim Dreyfuss * Two interrupts less: non rx causes shared with FBQ and RSS. 1642496d83caSHaim Dreyfuss * More than two interrupts: we will use fewer RSS queues. 1643496d83caSHaim Dreyfuss */ 1644ab1068d6SHao Wei Tee if (num_irqs <= max_irqs - 2) { 164506f4b081SSara Sharon trans_pcie->trans->num_rx_queues = num_irqs + 1; 1646496d83caSHaim Dreyfuss trans_pcie->shared_vec_mask = IWL_SHARED_IRQ_NON_RX | 1647496d83caSHaim Dreyfuss IWL_SHARED_IRQ_FIRST_RSS; 1648ab1068d6SHao Wei Tee } else if (num_irqs == max_irqs - 1) { 164906f4b081SSara Sharon trans_pcie->trans->num_rx_queues = num_irqs; 1650496d83caSHaim Dreyfuss trans_pcie->shared_vec_mask = IWL_SHARED_IRQ_NON_RX; 1651496d83caSHaim Dreyfuss } else { 165206f4b081SSara Sharon trans_pcie->trans->num_rx_queues = num_irqs - 1; 1653496d83caSHaim Dreyfuss } 1654ab1068d6SHao Wei Tee WARN_ON(trans_pcie->trans->num_rx_queues > IWL_MAX_RX_HW_QUEUES); 16552e5d4a8fSHaim Dreyfuss 165606f4b081SSara Sharon trans_pcie->alloc_vecs = num_irqs; 1657496d83caSHaim Dreyfuss trans_pcie->msix_enabled = true; 16582e5d4a8fSHaim Dreyfuss return; 16592e5d4a8fSHaim Dreyfuss 166006f4b081SSara Sharon enable_msi: 166106f4b081SSara Sharon ret = pci_enable_msi(pdev); 166206f4b081SSara Sharon if (ret) { 166306f4b081SSara Sharon dev_err(&pdev->dev, "pci_enable_msi failed - %d\n", ret); 16642e5d4a8fSHaim Dreyfuss /* enable rfkill interrupt: hw bug w/a */ 16652e5d4a8fSHaim Dreyfuss pci_read_config_word(pdev, PCI_COMMAND, &pci_cmd); 16662e5d4a8fSHaim Dreyfuss if (pci_cmd & PCI_COMMAND_INTX_DISABLE) { 16672e5d4a8fSHaim Dreyfuss pci_cmd &= ~PCI_COMMAND_INTX_DISABLE; 16682e5d4a8fSHaim Dreyfuss pci_write_config_word(pdev, PCI_COMMAND, pci_cmd); 16692e5d4a8fSHaim Dreyfuss } 16702e5d4a8fSHaim Dreyfuss } 16712e5d4a8fSHaim Dreyfuss } 16722e5d4a8fSHaim Dreyfuss 16737c8d91ebSHaim Dreyfuss static void iwl_pcie_irq_set_affinity(struct iwl_trans *trans) 16747c8d91ebSHaim Dreyfuss { 16757c8d91ebSHaim Dreyfuss int iter_rx_q, i, ret, cpu, offset; 16767c8d91ebSHaim Dreyfuss struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); 16777c8d91ebSHaim Dreyfuss 16787c8d91ebSHaim Dreyfuss i = trans_pcie->shared_vec_mask & IWL_SHARED_IRQ_FIRST_RSS ? 0 : 1; 16797c8d91ebSHaim Dreyfuss iter_rx_q = trans_pcie->trans->num_rx_queues - 1 + i; 16807c8d91ebSHaim Dreyfuss offset = 1 + i; 16817c8d91ebSHaim Dreyfuss for (; i < iter_rx_q ; i++) { 16827c8d91ebSHaim Dreyfuss /* 16837c8d91ebSHaim Dreyfuss * Get the cpu prior to the place to search 16847c8d91ebSHaim Dreyfuss * (i.e. return will be > i - 1). 16857c8d91ebSHaim Dreyfuss */ 16867c8d91ebSHaim Dreyfuss cpu = cpumask_next(i - offset, cpu_online_mask); 16877c8d91ebSHaim Dreyfuss cpumask_set_cpu(cpu, &trans_pcie->affinity_mask[i]); 16887c8d91ebSHaim Dreyfuss ret = irq_set_affinity_hint(trans_pcie->msix_entries[i].vector, 16897c8d91ebSHaim Dreyfuss &trans_pcie->affinity_mask[i]); 16907c8d91ebSHaim Dreyfuss if (ret) 16917c8d91ebSHaim Dreyfuss IWL_ERR(trans_pcie->trans, 16927c8d91ebSHaim Dreyfuss "Failed to set affinity mask for IRQ %d\n", 16937c8d91ebSHaim Dreyfuss i); 16947c8d91ebSHaim Dreyfuss } 16957c8d91ebSHaim Dreyfuss } 16967c8d91ebSHaim Dreyfuss 16972e5d4a8fSHaim Dreyfuss static int iwl_pcie_init_msix_handler(struct pci_dev *pdev, 16982e5d4a8fSHaim Dreyfuss struct iwl_trans_pcie *trans_pcie) 16992e5d4a8fSHaim Dreyfuss { 1700496d83caSHaim Dreyfuss int i; 17012e5d4a8fSHaim Dreyfuss 1702496d83caSHaim Dreyfuss for (i = 0; i < trans_pcie->alloc_vecs; i++) { 17032e5d4a8fSHaim Dreyfuss int ret; 17045a41a86cSSharon Dvir struct msix_entry *msix_entry; 170564fa3affSSharon Dvir const char *qname = queue_name(&pdev->dev, trans_pcie, i); 170664fa3affSSharon Dvir 170764fa3affSSharon Dvir if (!qname) 170864fa3affSSharon Dvir return -ENOMEM; 17092e5d4a8fSHaim Dreyfuss 17105a41a86cSSharon Dvir msix_entry = &trans_pcie->msix_entries[i]; 17115a41a86cSSharon Dvir ret = devm_request_threaded_irq(&pdev->dev, 17125a41a86cSSharon Dvir msix_entry->vector, 17132e5d4a8fSHaim Dreyfuss iwl_pcie_msix_isr, 1714496d83caSHaim Dreyfuss (i == trans_pcie->def_irq) ? 17152e5d4a8fSHaim Dreyfuss iwl_pcie_irq_msix_handler : 17162e5d4a8fSHaim Dreyfuss iwl_pcie_irq_rx_msix_handler, 17172e5d4a8fSHaim Dreyfuss IRQF_SHARED, 171864fa3affSSharon Dvir qname, 17195a41a86cSSharon Dvir msix_entry); 17202e5d4a8fSHaim Dreyfuss if (ret) { 17212e5d4a8fSHaim Dreyfuss IWL_ERR(trans_pcie->trans, 17222e5d4a8fSHaim Dreyfuss "Error allocating IRQ %d\n", i); 17235a41a86cSSharon Dvir 17242e5d4a8fSHaim Dreyfuss return ret; 17252e5d4a8fSHaim Dreyfuss } 17262e5d4a8fSHaim Dreyfuss } 17277c8d91ebSHaim Dreyfuss iwl_pcie_irq_set_affinity(trans_pcie->trans); 17282e5d4a8fSHaim Dreyfuss 17292e5d4a8fSHaim Dreyfuss return 0; 17302e5d4a8fSHaim Dreyfuss } 17312e5d4a8fSHaim Dreyfuss 173244f61b5cSShahar S Matityahu static int iwl_trans_pcie_clear_persistence_bit(struct iwl_trans *trans) 173344f61b5cSShahar S Matityahu { 173444f61b5cSShahar S Matityahu u32 hpm, wprot; 173544f61b5cSShahar S Matityahu 1736286ca8ebSLuca Coelho switch (trans->trans_cfg->device_family) { 173744f61b5cSShahar S Matityahu case IWL_DEVICE_FAMILY_9000: 173844f61b5cSShahar S Matityahu wprot = PREG_PRPH_WPROT_9000; 173944f61b5cSShahar S Matityahu break; 174044f61b5cSShahar S Matityahu case IWL_DEVICE_FAMILY_22000: 174144f61b5cSShahar S Matityahu wprot = PREG_PRPH_WPROT_22000; 174244f61b5cSShahar S Matityahu break; 174344f61b5cSShahar S Matityahu default: 174444f61b5cSShahar S Matityahu return 0; 174544f61b5cSShahar S Matityahu } 174644f61b5cSShahar S Matityahu 174744f61b5cSShahar S Matityahu hpm = iwl_read_umac_prph_no_grab(trans, HPM_DEBUG); 174844f61b5cSShahar S Matityahu if (hpm != 0xa5a5a5a0 && (hpm & PERSISTENCE_BIT)) { 174944f61b5cSShahar S Matityahu u32 wprot_val = iwl_read_umac_prph_no_grab(trans, wprot); 175044f61b5cSShahar S Matityahu 175144f61b5cSShahar S Matityahu if (wprot_val & PREG_WFPM_ACCESS) { 175244f61b5cSShahar S Matityahu IWL_ERR(trans, 175344f61b5cSShahar S Matityahu "Error, can not clear persistence bit\n"); 175444f61b5cSShahar S Matityahu return -EPERM; 175544f61b5cSShahar S Matityahu } 175644f61b5cSShahar S Matityahu iwl_write_umac_prph_no_grab(trans, HPM_DEBUG, 175744f61b5cSShahar S Matityahu hpm & ~PERSISTENCE_BIT); 175844f61b5cSShahar S Matityahu } 175944f61b5cSShahar S Matityahu 176044f61b5cSShahar S Matityahu return 0; 176144f61b5cSShahar S Matityahu } 176244f61b5cSShahar S Matityahu 17630df36b90SLuca Coelho static int iwl_pcie_gen2_force_power_gating(struct iwl_trans *trans) 17640df36b90SLuca Coelho { 17650df36b90SLuca Coelho int ret; 17660df36b90SLuca Coelho 17670df36b90SLuca Coelho ret = iwl_finish_nic_init(trans, trans->trans_cfg); 17680df36b90SLuca Coelho if (ret < 0) 17690df36b90SLuca Coelho return ret; 17700df36b90SLuca Coelho 17710df36b90SLuca Coelho iwl_set_bits_prph(trans, HPM_HIPM_GEN_CFG, 17720df36b90SLuca Coelho HPM_HIPM_GEN_CFG_CR_FORCE_ACTIVE); 17730df36b90SLuca Coelho udelay(20); 17740df36b90SLuca Coelho iwl_set_bits_prph(trans, HPM_HIPM_GEN_CFG, 17750df36b90SLuca Coelho HPM_HIPM_GEN_CFG_CR_PG_EN | 17760df36b90SLuca Coelho HPM_HIPM_GEN_CFG_CR_SLP_EN); 17770df36b90SLuca Coelho udelay(20); 17780df36b90SLuca Coelho iwl_clear_bits_prph(trans, HPM_HIPM_GEN_CFG, 17790df36b90SLuca Coelho HPM_HIPM_GEN_CFG_CR_FORCE_ACTIVE); 17800df36b90SLuca Coelho 17810df36b90SLuca Coelho iwl_trans_pcie_sw_reset(trans); 17820df36b90SLuca Coelho 17830df36b90SLuca Coelho return 0; 17840df36b90SLuca Coelho } 17850df36b90SLuca Coelho 1786bab3cb92SEmmanuel Grumbach static int _iwl_trans_pcie_start_hw(struct iwl_trans *trans) 1787e705c121SKalle Valo { 1788e705c121SKalle Valo struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); 1789e705c121SKalle Valo int err; 1790e705c121SKalle Valo 1791e705c121SKalle Valo lockdep_assert_held(&trans_pcie->mutex); 1792e705c121SKalle Valo 1793e705c121SKalle Valo err = iwl_pcie_prepare_card_hw(trans); 1794e705c121SKalle Valo if (err) { 1795e705c121SKalle Valo IWL_ERR(trans, "Error while preparing HW: %d\n", err); 1796e705c121SKalle Valo return err; 1797e705c121SKalle Valo } 1798e705c121SKalle Valo 179944f61b5cSShahar S Matityahu err = iwl_trans_pcie_clear_persistence_bit(trans); 180044f61b5cSShahar S Matityahu if (err) 180144f61b5cSShahar S Matityahu return err; 18028954e1ebSShahar S Matityahu 1803870c2a11SGolan Ben Ami iwl_trans_pcie_sw_reset(trans); 1804e705c121SKalle Valo 18050df36b90SLuca Coelho if (trans->trans_cfg->device_family == IWL_DEVICE_FAMILY_22000 && 18067897dfa2SLuca Coelho trans->trans_cfg->integrated) { 18070df36b90SLuca Coelho err = iwl_pcie_gen2_force_power_gating(trans); 18080df36b90SLuca Coelho if (err) 18090df36b90SLuca Coelho return err; 18100df36b90SLuca Coelho } 18110df36b90SLuca Coelho 181252b6e168SEmmanuel Grumbach err = iwl_pcie_apm_init(trans); 181352b6e168SEmmanuel Grumbach if (err) 181452b6e168SEmmanuel Grumbach return err; 1815e705c121SKalle Valo 18162e5d4a8fSHaim Dreyfuss iwl_pcie_init_msix(trans_pcie); 181783730058SHaim Dreyfuss 1818e705c121SKalle Valo /* From now on, the op_mode will be kept updated about RF kill state */ 1819e705c121SKalle Valo iwl_enable_rfkill_int(trans); 1820e705c121SKalle Valo 1821326477e4SJohannes Berg trans_pcie->opmode_down = false; 1822326477e4SJohannes Berg 1823e705c121SKalle Valo /* Set is_down to false here so that...*/ 1824e705c121SKalle Valo trans_pcie->is_down = false; 1825e705c121SKalle Valo 1826e705c121SKalle Valo /* ...rfkill can call stop_device and set it false if needed */ 18279ad8fd0bSJohannes Berg iwl_pcie_check_hw_rf_kill(trans); 1828e705c121SKalle Valo 1829e705c121SKalle Valo return 0; 1830e705c121SKalle Valo } 1831e705c121SKalle Valo 1832bab3cb92SEmmanuel Grumbach static int iwl_trans_pcie_start_hw(struct iwl_trans *trans) 1833e705c121SKalle Valo { 1834e705c121SKalle Valo struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); 1835e705c121SKalle Valo int ret; 1836e705c121SKalle Valo 1837e705c121SKalle Valo mutex_lock(&trans_pcie->mutex); 1838bab3cb92SEmmanuel Grumbach ret = _iwl_trans_pcie_start_hw(trans); 1839e705c121SKalle Valo mutex_unlock(&trans_pcie->mutex); 1840e705c121SKalle Valo 1841e705c121SKalle Valo return ret; 1842e705c121SKalle Valo } 1843e705c121SKalle Valo 1844e705c121SKalle Valo static void iwl_trans_pcie_op_mode_leave(struct iwl_trans *trans) 1845e705c121SKalle Valo { 1846e705c121SKalle Valo struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); 1847e705c121SKalle Valo 1848e705c121SKalle Valo mutex_lock(&trans_pcie->mutex); 1849e705c121SKalle Valo 1850e705c121SKalle Valo /* disable interrupts - don't enable HW RF kill interrupt */ 1851e705c121SKalle Valo iwl_disable_interrupts(trans); 1852e705c121SKalle Valo 1853e705c121SKalle Valo iwl_pcie_apm_stop(trans, true); 1854e705c121SKalle Valo 1855e705c121SKalle Valo iwl_disable_interrupts(trans); 1856e705c121SKalle Valo 1857e705c121SKalle Valo iwl_pcie_disable_ict(trans); 1858e705c121SKalle Valo 1859e705c121SKalle Valo mutex_unlock(&trans_pcie->mutex); 1860e705c121SKalle Valo 18612e5d4a8fSHaim Dreyfuss iwl_pcie_synchronize_irqs(trans); 1862e705c121SKalle Valo } 1863e705c121SKalle Valo 1864e705c121SKalle Valo static void iwl_trans_pcie_write8(struct iwl_trans *trans, u32 ofs, u8 val) 1865e705c121SKalle Valo { 1866e705c121SKalle Valo writeb(val, IWL_TRANS_GET_PCIE_TRANS(trans)->hw_base + ofs); 1867e705c121SKalle Valo } 1868e705c121SKalle Valo 1869e705c121SKalle Valo static void iwl_trans_pcie_write32(struct iwl_trans *trans, u32 ofs, u32 val) 1870e705c121SKalle Valo { 1871e705c121SKalle Valo writel(val, IWL_TRANS_GET_PCIE_TRANS(trans)->hw_base + ofs); 1872e705c121SKalle Valo } 1873e705c121SKalle Valo 1874e705c121SKalle Valo static u32 iwl_trans_pcie_read32(struct iwl_trans *trans, u32 ofs) 1875e705c121SKalle Valo { 1876e705c121SKalle Valo return readl(IWL_TRANS_GET_PCIE_TRANS(trans)->hw_base + ofs); 1877e705c121SKalle Valo } 1878e705c121SKalle Valo 187984fb372cSSara Sharon static u32 iwl_trans_pcie_prph_msk(struct iwl_trans *trans) 188084fb372cSSara Sharon { 18813681021fSJohannes Berg if (trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_AX210) 188284fb372cSSara Sharon return 0x00FFFFFF; 188384fb372cSSara Sharon else 188484fb372cSSara Sharon return 0x000FFFFF; 188584fb372cSSara Sharon } 188684fb372cSSara Sharon 1887e705c121SKalle Valo static u32 iwl_trans_pcie_read_prph(struct iwl_trans *trans, u32 reg) 1888e705c121SKalle Valo { 188984fb372cSSara Sharon u32 mask = iwl_trans_pcie_prph_msk(trans); 189084fb372cSSara Sharon 1891e705c121SKalle Valo iwl_trans_pcie_write32(trans, HBUS_TARG_PRPH_RADDR, 189284fb372cSSara Sharon ((reg & mask) | (3 << 24))); 1893e705c121SKalle Valo return iwl_trans_pcie_read32(trans, HBUS_TARG_PRPH_RDAT); 1894e705c121SKalle Valo } 1895e705c121SKalle Valo 1896e705c121SKalle Valo static void iwl_trans_pcie_write_prph(struct iwl_trans *trans, u32 addr, 1897e705c121SKalle Valo u32 val) 1898e705c121SKalle Valo { 189984fb372cSSara Sharon u32 mask = iwl_trans_pcie_prph_msk(trans); 190084fb372cSSara Sharon 1901e705c121SKalle Valo iwl_trans_pcie_write32(trans, HBUS_TARG_PRPH_WADDR, 190284fb372cSSara Sharon ((addr & mask) | (3 << 24))); 1903e705c121SKalle Valo iwl_trans_pcie_write32(trans, HBUS_TARG_PRPH_WDAT, val); 1904e705c121SKalle Valo } 1905e705c121SKalle Valo 1906e705c121SKalle Valo static void iwl_trans_pcie_configure(struct iwl_trans *trans, 1907e705c121SKalle Valo const struct iwl_trans_config *trans_cfg) 1908e705c121SKalle Valo { 1909e705c121SKalle Valo struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); 1910e705c121SKalle Valo 19114f4822b7SMordechay Goodstein trans->txqs.cmd.q_id = trans_cfg->cmd_queue; 19124f4822b7SMordechay Goodstein trans->txqs.cmd.fifo = trans_cfg->cmd_fifo; 19134f4822b7SMordechay Goodstein trans->txqs.cmd.wdg_timeout = trans_cfg->cmd_q_wdg_timeout; 1914e705c121SKalle Valo if (WARN_ON(trans_cfg->n_no_reclaim_cmds > MAX_NO_RECLAIM_CMDS)) 1915e705c121SKalle Valo trans_pcie->n_no_reclaim_cmds = 0; 1916e705c121SKalle Valo else 1917e705c121SKalle Valo trans_pcie->n_no_reclaim_cmds = trans_cfg->n_no_reclaim_cmds; 1918e705c121SKalle Valo if (trans_pcie->n_no_reclaim_cmds) 1919e705c121SKalle Valo memcpy(trans_pcie->no_reclaim_cmds, trans_cfg->no_reclaim_cmds, 1920e705c121SKalle Valo trans_pcie->n_no_reclaim_cmds * sizeof(u8)); 1921e705c121SKalle Valo 19226c4fbcbcSEmmanuel Grumbach trans_pcie->rx_buf_size = trans_cfg->rx_buf_size; 19236c4fbcbcSEmmanuel Grumbach trans_pcie->rx_page_order = 19246c4fbcbcSEmmanuel Grumbach iwl_trans_get_rb_size_order(trans_pcie->rx_buf_size); 192580084e35SJohannes Berg trans_pcie->rx_buf_bytes = 192680084e35SJohannes Berg iwl_trans_get_rb_size(trans_pcie->rx_buf_size); 1927cfdc20efSJohannes Berg trans_pcie->supported_dma_mask = DMA_BIT_MASK(12); 1928cfdc20efSJohannes Berg if (trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_AX210) 1929cfdc20efSJohannes Berg trans_pcie->supported_dma_mask = DMA_BIT_MASK(11); 1930e705c121SKalle Valo 1931e705c121SKalle Valo trans_pcie->bc_table_dword = trans_cfg->bc_table_dword; 1932e705c121SKalle Valo trans_pcie->scd_set_active = trans_cfg->scd_set_active; 193341837ca9SEmmanuel Grumbach trans_pcie->sw_csum_tx = trans_cfg->sw_csum_tx; 1934e705c121SKalle Valo 193521cb3222SJohannes Berg trans_pcie->page_offs = trans_cfg->cb_data_offs; 193621cb3222SJohannes Berg trans_pcie->dev_cmd_offs = trans_cfg->cb_data_offs + sizeof(void *); 193721cb3222SJohannes Berg 193839bdb17eSSharon Dvir trans->command_groups = trans_cfg->command_groups; 193939bdb17eSSharon Dvir trans->command_groups_size = trans_cfg->command_groups_size; 194039bdb17eSSharon Dvir 1941e705c121SKalle Valo /* Initialize NAPI here - it should be before registering to mac80211 1942e705c121SKalle Valo * in the opmode but after the HW struct is allocated. 1943e705c121SKalle Valo * As this function may be called again in some corner cases don't 1944e705c121SKalle Valo * do anything if NAPI was already initialized. 1945e705c121SKalle Valo */ 1946bce97731SSara Sharon if (trans_pcie->napi_dev.reg_state != NETREG_DUMMY) 1947e705c121SKalle Valo init_dummy_netdev(&trans_pcie->napi_dev); 1948e705c121SKalle Valo } 1949e705c121SKalle Valo 1950e705c121SKalle Valo void iwl_trans_pcie_free(struct iwl_trans *trans) 1951e705c121SKalle Valo { 1952e705c121SKalle Valo struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); 19536eb5e529SEmmanuel Grumbach int i; 1954e705c121SKalle Valo 19552e5d4a8fSHaim Dreyfuss iwl_pcie_synchronize_irqs(trans); 1956e705c121SKalle Valo 1957286ca8ebSLuca Coelho if (trans->trans_cfg->gen2) 195813a3a390SSara Sharon iwl_pcie_gen2_tx_free(trans); 195913a3a390SSara Sharon else 1960e705c121SKalle Valo iwl_pcie_tx_free(trans); 1961e705c121SKalle Valo iwl_pcie_rx_free(trans); 1962e705c121SKalle Valo 196310a54d81SLuca Coelho if (trans_pcie->rba.alloc_wq) { 196410a54d81SLuca Coelho destroy_workqueue(trans_pcie->rba.alloc_wq); 196510a54d81SLuca Coelho trans_pcie->rba.alloc_wq = NULL; 196610a54d81SLuca Coelho } 196710a54d81SLuca Coelho 19682e5d4a8fSHaim Dreyfuss if (trans_pcie->msix_enabled) { 19697c8d91ebSHaim Dreyfuss for (i = 0; i < trans_pcie->alloc_vecs; i++) { 19707c8d91ebSHaim Dreyfuss irq_set_affinity_hint( 19717c8d91ebSHaim Dreyfuss trans_pcie->msix_entries[i].vector, 19727c8d91ebSHaim Dreyfuss NULL); 19737c8d91ebSHaim Dreyfuss } 19742e5d4a8fSHaim Dreyfuss 19752e5d4a8fSHaim Dreyfuss trans_pcie->msix_enabled = false; 19762e5d4a8fSHaim Dreyfuss } else { 1977e705c121SKalle Valo iwl_pcie_free_ict(trans); 19782e5d4a8fSHaim Dreyfuss } 1979e705c121SKalle Valo 1980e705c121SKalle Valo iwl_pcie_free_fw_monitor(trans); 1981e705c121SKalle Valo 19826eb5e529SEmmanuel Grumbach for_each_possible_cpu(i) { 19836eb5e529SEmmanuel Grumbach struct iwl_tso_hdr_page *p = 19846eb5e529SEmmanuel Grumbach per_cpu_ptr(trans_pcie->tso_hdr_page, i); 19856eb5e529SEmmanuel Grumbach 19866eb5e529SEmmanuel Grumbach if (p->page) 19876eb5e529SEmmanuel Grumbach __free_page(p->page); 19886eb5e529SEmmanuel Grumbach } 19896eb5e529SEmmanuel Grumbach 19906eb5e529SEmmanuel Grumbach free_percpu(trans_pcie->tso_hdr_page); 1991a2a57a35SEmmanuel Grumbach mutex_destroy(&trans_pcie->mutex); 1992e705c121SKalle Valo iwl_trans_free(trans); 1993e705c121SKalle Valo } 1994e705c121SKalle Valo 1995e705c121SKalle Valo static void iwl_trans_pcie_set_pmi(struct iwl_trans *trans, bool state) 1996e705c121SKalle Valo { 1997e705c121SKalle Valo if (state) 1998e705c121SKalle Valo set_bit(STATUS_TPOWER_PMI, &trans->status); 1999e705c121SKalle Valo else 2000e705c121SKalle Valo clear_bit(STATUS_TPOWER_PMI, &trans->status); 2001e705c121SKalle Valo } 2002e705c121SKalle Valo 200349564a80SLuca Coelho struct iwl_trans_pcie_removal { 200449564a80SLuca Coelho struct pci_dev *pdev; 200549564a80SLuca Coelho struct work_struct work; 200649564a80SLuca Coelho }; 200749564a80SLuca Coelho 200849564a80SLuca Coelho static void iwl_trans_pcie_removal_wk(struct work_struct *wk) 200949564a80SLuca Coelho { 201049564a80SLuca Coelho struct iwl_trans_pcie_removal *removal = 201149564a80SLuca Coelho container_of(wk, struct iwl_trans_pcie_removal, work); 201249564a80SLuca Coelho struct pci_dev *pdev = removal->pdev; 2013aba1e632SColin Ian King static char *prop[] = {"EVENT=INACCESSIBLE", NULL}; 201449564a80SLuca Coelho 201549564a80SLuca Coelho dev_err(&pdev->dev, "Device gone - attempting removal\n"); 201649564a80SLuca Coelho kobject_uevent_env(&pdev->dev.kobj, KOBJ_CHANGE, prop); 201749564a80SLuca Coelho pci_lock_rescan_remove(); 201849564a80SLuca Coelho pci_dev_put(pdev); 201949564a80SLuca Coelho pci_stop_and_remove_bus_device(pdev); 202049564a80SLuca Coelho pci_unlock_rescan_remove(); 202149564a80SLuca Coelho 202249564a80SLuca Coelho kfree(removal); 202349564a80SLuca Coelho module_put(THIS_MODULE); 202449564a80SLuca Coelho } 202549564a80SLuca Coelho 202623ba9340SEmmanuel Grumbach static bool iwl_trans_pcie_grab_nic_access(struct iwl_trans *trans, 2027e705c121SKalle Valo unsigned long *flags) 2028e705c121SKalle Valo { 2029e705c121SKalle Valo int ret; 2030e705c121SKalle Valo struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); 2031e705c121SKalle Valo 2032e705c121SKalle Valo spin_lock_irqsave(&trans_pcie->reg_lock, *flags); 2033e705c121SKalle Valo 2034e705c121SKalle Valo if (trans_pcie->cmd_hold_nic_awake) 2035e705c121SKalle Valo goto out; 2036e705c121SKalle Valo 2037e705c121SKalle Valo /* this bit wakes up the NIC */ 2038e705c121SKalle Valo __iwl_trans_pcie_set_bit(trans, CSR_GP_CNTRL, 20396dece0e9SLuca Coelho CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ); 2040286ca8ebSLuca Coelho if (trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_8000) 2041e705c121SKalle Valo udelay(2); 2042e705c121SKalle Valo 2043e705c121SKalle Valo /* 2044e705c121SKalle Valo * These bits say the device is running, and should keep running for 2045e705c121SKalle Valo * at least a short while (at least as long as MAC_ACCESS_REQ stays 1), 2046e705c121SKalle Valo * but they do not indicate that embedded SRAM is restored yet; 2047fb70d49fSLuca Coelho * HW with volatile SRAM must save/restore contents to/from 2048fb70d49fSLuca Coelho * host DRAM when sleeping/waking for power-saving. 2049e705c121SKalle Valo * Each direction takes approximately 1/4 millisecond; with this 2050e705c121SKalle Valo * overhead, it's a good idea to grab and hold MAC_ACCESS_REQUEST if a 2051e705c121SKalle Valo * series of register accesses are expected (e.g. reading Event Log), 2052e705c121SKalle Valo * to keep device from sleeping. 2053e705c121SKalle Valo * 2054e705c121SKalle Valo * CSR_UCODE_DRV_GP1 register bit MAC_SLEEP == 0 indicates that 2055e705c121SKalle Valo * SRAM is okay/restored. We don't check that here because this call 2056fb70d49fSLuca Coelho * is just for hardware register access; but GP1 MAC_SLEEP 2057fb70d49fSLuca Coelho * check is a good idea before accessing the SRAM of HW with 2058fb70d49fSLuca Coelho * volatile SRAM (e.g. reading Event Log). 2059e705c121SKalle Valo * 2060e705c121SKalle Valo * 5000 series and later (including 1000 series) have non-volatile SRAM, 2061e705c121SKalle Valo * and do not save/restore SRAM when power cycling. 2062e705c121SKalle Valo */ 2063e705c121SKalle Valo ret = iwl_poll_bit(trans, CSR_GP_CNTRL, 20646dece0e9SLuca Coelho CSR_GP_CNTRL_REG_VAL_MAC_ACCESS_EN, 20656dece0e9SLuca Coelho (CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY | 2066e705c121SKalle Valo CSR_GP_CNTRL_REG_FLAG_GOING_TO_SLEEP), 15000); 2067e705c121SKalle Valo if (unlikely(ret < 0)) { 206849564a80SLuca Coelho u32 cntrl = iwl_read32(trans, CSR_GP_CNTRL); 206949564a80SLuca Coelho 2070e705c121SKalle Valo WARN_ONCE(1, 2071e705c121SKalle Valo "Timeout waiting for hardware access (CSR_GP_CNTRL 0x%08x)\n", 207249564a80SLuca Coelho cntrl); 207349564a80SLuca Coelho 207449564a80SLuca Coelho iwl_trans_pcie_dump_regs(trans); 207549564a80SLuca Coelho 207649564a80SLuca Coelho if (iwlwifi_mod_params.remove_when_gone && cntrl == ~0U) { 207749564a80SLuca Coelho struct iwl_trans_pcie_removal *removal; 207849564a80SLuca Coelho 2079f60c9e59SEmmanuel Grumbach if (test_bit(STATUS_TRANS_DEAD, &trans->status)) 208049564a80SLuca Coelho goto err; 208149564a80SLuca Coelho 208249564a80SLuca Coelho IWL_ERR(trans, "Device gone - scheduling removal!\n"); 208349564a80SLuca Coelho 208449564a80SLuca Coelho /* 208549564a80SLuca Coelho * get a module reference to avoid doing this 208649564a80SLuca Coelho * while unloading anyway and to avoid 208749564a80SLuca Coelho * scheduling a work with code that's being 208849564a80SLuca Coelho * removed. 208949564a80SLuca Coelho */ 209049564a80SLuca Coelho if (!try_module_get(THIS_MODULE)) { 209149564a80SLuca Coelho IWL_ERR(trans, 209249564a80SLuca Coelho "Module is being unloaded - abort\n"); 209349564a80SLuca Coelho goto err; 209449564a80SLuca Coelho } 209549564a80SLuca Coelho 209649564a80SLuca Coelho removal = kzalloc(sizeof(*removal), GFP_ATOMIC); 209749564a80SLuca Coelho if (!removal) { 209849564a80SLuca Coelho module_put(THIS_MODULE); 209949564a80SLuca Coelho goto err; 210049564a80SLuca Coelho } 210149564a80SLuca Coelho /* 210249564a80SLuca Coelho * we don't need to clear this flag, because 210349564a80SLuca Coelho * the trans will be freed and reallocated. 210449564a80SLuca Coelho */ 2105f60c9e59SEmmanuel Grumbach set_bit(STATUS_TRANS_DEAD, &trans->status); 210649564a80SLuca Coelho 210749564a80SLuca Coelho removal->pdev = to_pci_dev(trans->dev); 210849564a80SLuca Coelho INIT_WORK(&removal->work, iwl_trans_pcie_removal_wk); 210949564a80SLuca Coelho pci_dev_get(removal->pdev); 211049564a80SLuca Coelho schedule_work(&removal->work); 211149564a80SLuca Coelho } else { 211249564a80SLuca Coelho iwl_write32(trans, CSR_RESET, 211349564a80SLuca Coelho CSR_RESET_REG_FLAG_FORCE_NMI); 211449564a80SLuca Coelho } 211549564a80SLuca Coelho 211649564a80SLuca Coelho err: 2117e705c121SKalle Valo spin_unlock_irqrestore(&trans_pcie->reg_lock, *flags); 2118e705c121SKalle Valo return false; 2119e705c121SKalle Valo } 2120e705c121SKalle Valo 2121e705c121SKalle Valo out: 2122e705c121SKalle Valo /* 2123e705c121SKalle Valo * Fool sparse by faking we release the lock - sparse will 2124e705c121SKalle Valo * track nic_access anyway. 2125e705c121SKalle Valo */ 2126e705c121SKalle Valo __release(&trans_pcie->reg_lock); 2127e705c121SKalle Valo return true; 2128e705c121SKalle Valo } 2129e705c121SKalle Valo 2130e705c121SKalle Valo static void iwl_trans_pcie_release_nic_access(struct iwl_trans *trans, 2131e705c121SKalle Valo unsigned long *flags) 2132e705c121SKalle Valo { 2133e705c121SKalle Valo struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); 2134e705c121SKalle Valo 2135e705c121SKalle Valo lockdep_assert_held(&trans_pcie->reg_lock); 2136e705c121SKalle Valo 2137e705c121SKalle Valo /* 2138e705c121SKalle Valo * Fool sparse by faking we acquiring the lock - sparse will 2139e705c121SKalle Valo * track nic_access anyway. 2140e705c121SKalle Valo */ 2141e705c121SKalle Valo __acquire(&trans_pcie->reg_lock); 2142e705c121SKalle Valo 2143e705c121SKalle Valo if (trans_pcie->cmd_hold_nic_awake) 2144e705c121SKalle Valo goto out; 2145e705c121SKalle Valo 2146e705c121SKalle Valo __iwl_trans_pcie_clear_bit(trans, CSR_GP_CNTRL, 21476dece0e9SLuca Coelho CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ); 2148e705c121SKalle Valo /* 2149e705c121SKalle Valo * Above we read the CSR_GP_CNTRL register, which will flush 2150e705c121SKalle Valo * any previous writes, but we need the write that clears the 2151e705c121SKalle Valo * MAC_ACCESS_REQ bit to be performed before any other writes 2152e705c121SKalle Valo * scheduled on different CPUs (after we drop reg_lock). 2153e705c121SKalle Valo */ 2154e705c121SKalle Valo out: 2155e705c121SKalle Valo spin_unlock_irqrestore(&trans_pcie->reg_lock, *flags); 2156e705c121SKalle Valo } 2157e705c121SKalle Valo 2158e705c121SKalle Valo static int iwl_trans_pcie_read_mem(struct iwl_trans *trans, u32 addr, 2159e705c121SKalle Valo void *buf, int dwords) 2160e705c121SKalle Valo { 2161e705c121SKalle Valo unsigned long flags; 2162e705c121SKalle Valo int offs, ret = 0; 2163e705c121SKalle Valo u32 *vals = buf; 2164e705c121SKalle Valo 216523ba9340SEmmanuel Grumbach if (iwl_trans_grab_nic_access(trans, &flags)) { 2166e705c121SKalle Valo iwl_write32(trans, HBUS_TARG_MEM_RADDR, addr); 2167e705c121SKalle Valo for (offs = 0; offs < dwords; offs++) 2168e705c121SKalle Valo vals[offs] = iwl_read32(trans, HBUS_TARG_MEM_RDAT); 2169e705c121SKalle Valo iwl_trans_release_nic_access(trans, &flags); 2170e705c121SKalle Valo } else { 2171e705c121SKalle Valo ret = -EBUSY; 2172e705c121SKalle Valo } 2173e705c121SKalle Valo return ret; 2174e705c121SKalle Valo } 2175e705c121SKalle Valo 2176e705c121SKalle Valo static int iwl_trans_pcie_write_mem(struct iwl_trans *trans, u32 addr, 2177e705c121SKalle Valo const void *buf, int dwords) 2178e705c121SKalle Valo { 2179e705c121SKalle Valo unsigned long flags; 2180e705c121SKalle Valo int offs, ret = 0; 2181e705c121SKalle Valo const u32 *vals = buf; 2182e705c121SKalle Valo 218323ba9340SEmmanuel Grumbach if (iwl_trans_grab_nic_access(trans, &flags)) { 2184e705c121SKalle Valo iwl_write32(trans, HBUS_TARG_MEM_WADDR, addr); 2185e705c121SKalle Valo for (offs = 0; offs < dwords; offs++) 2186e705c121SKalle Valo iwl_write32(trans, HBUS_TARG_MEM_WDAT, 2187e705c121SKalle Valo vals ? vals[offs] : 0); 2188e705c121SKalle Valo iwl_trans_release_nic_access(trans, &flags); 2189e705c121SKalle Valo } else { 2190e705c121SKalle Valo ret = -EBUSY; 2191e705c121SKalle Valo } 2192e705c121SKalle Valo return ret; 2193e705c121SKalle Valo } 2194e705c121SKalle Valo 21957f1fe1d4SLuca Coelho static int iwl_trans_pcie_read_config32(struct iwl_trans *trans, u32 ofs, 21967f1fe1d4SLuca Coelho u32 *val) 21977f1fe1d4SLuca Coelho { 21987f1fe1d4SLuca Coelho return pci_read_config_dword(IWL_TRANS_GET_PCIE_TRANS(trans)->pci_dev, 21997f1fe1d4SLuca Coelho ofs, val); 22007f1fe1d4SLuca Coelho } 22017f1fe1d4SLuca Coelho 2202e705c121SKalle Valo static void iwl_trans_pcie_freeze_txq_timer(struct iwl_trans *trans, 2203e705c121SKalle Valo unsigned long txqs, 2204e705c121SKalle Valo bool freeze) 2205e705c121SKalle Valo { 2206e705c121SKalle Valo int queue; 2207e705c121SKalle Valo 2208e705c121SKalle Valo for_each_set_bit(queue, &txqs, BITS_PER_LONG) { 22094f4822b7SMordechay Goodstein struct iwl_txq *txq = trans->txqs.txq[queue]; 2210e705c121SKalle Valo unsigned long now; 2211e705c121SKalle Valo 2212e705c121SKalle Valo spin_lock_bh(&txq->lock); 2213e705c121SKalle Valo 2214e705c121SKalle Valo now = jiffies; 2215e705c121SKalle Valo 2216e705c121SKalle Valo if (txq->frozen == freeze) 2217e705c121SKalle Valo goto next_queue; 2218e705c121SKalle Valo 2219e705c121SKalle Valo IWL_DEBUG_TX_QUEUES(trans, "%s TXQ %d\n", 2220e705c121SKalle Valo freeze ? "Freezing" : "Waking", queue); 2221e705c121SKalle Valo 2222e705c121SKalle Valo txq->frozen = freeze; 2223e705c121SKalle Valo 2224bb98ecd4SSara Sharon if (txq->read_ptr == txq->write_ptr) 2225e705c121SKalle Valo goto next_queue; 2226e705c121SKalle Valo 2227e705c121SKalle Valo if (freeze) { 2228e705c121SKalle Valo if (unlikely(time_after(now, 2229e705c121SKalle Valo txq->stuck_timer.expires))) { 2230e705c121SKalle Valo /* 2231e705c121SKalle Valo * The timer should have fired, maybe it is 2232e705c121SKalle Valo * spinning right now on the lock. 2233e705c121SKalle Valo */ 2234e705c121SKalle Valo goto next_queue; 2235e705c121SKalle Valo } 2236e705c121SKalle Valo /* remember how long until the timer fires */ 2237e705c121SKalle Valo txq->frozen_expiry_remainder = 2238e705c121SKalle Valo txq->stuck_timer.expires - now; 2239e705c121SKalle Valo del_timer(&txq->stuck_timer); 2240e705c121SKalle Valo goto next_queue; 2241e705c121SKalle Valo } 2242e705c121SKalle Valo 2243e705c121SKalle Valo /* 2244e705c121SKalle Valo * Wake a non-empty queue -> arm timer with the 2245e705c121SKalle Valo * remainder before it froze 2246e705c121SKalle Valo */ 2247e705c121SKalle Valo mod_timer(&txq->stuck_timer, 2248e705c121SKalle Valo now + txq->frozen_expiry_remainder); 2249e705c121SKalle Valo 2250e705c121SKalle Valo next_queue: 2251e705c121SKalle Valo spin_unlock_bh(&txq->lock); 2252e705c121SKalle Valo } 2253e705c121SKalle Valo } 2254e705c121SKalle Valo 22550cd58eaaSEmmanuel Grumbach static void iwl_trans_pcie_block_txq_ptrs(struct iwl_trans *trans, bool block) 22560cd58eaaSEmmanuel Grumbach { 22570cd58eaaSEmmanuel Grumbach int i; 22580cd58eaaSEmmanuel Grumbach 2259286ca8ebSLuca Coelho for (i = 0; i < trans->trans_cfg->base_params->num_of_queues; i++) { 22604f4822b7SMordechay Goodstein struct iwl_txq *txq = trans->txqs.txq[i]; 22610cd58eaaSEmmanuel Grumbach 22624f4822b7SMordechay Goodstein if (i == trans->txqs.cmd.q_id) 22630cd58eaaSEmmanuel Grumbach continue; 22640cd58eaaSEmmanuel Grumbach 22650cd58eaaSEmmanuel Grumbach spin_lock_bh(&txq->lock); 22660cd58eaaSEmmanuel Grumbach 22670cd58eaaSEmmanuel Grumbach if (!block && !(WARN_ON_ONCE(!txq->block))) { 22680cd58eaaSEmmanuel Grumbach txq->block--; 22690cd58eaaSEmmanuel Grumbach if (!txq->block) { 22700cd58eaaSEmmanuel Grumbach iwl_write32(trans, HBUS_TARG_WRPTR, 2271bb98ecd4SSara Sharon txq->write_ptr | (i << 8)); 22720cd58eaaSEmmanuel Grumbach } 22730cd58eaaSEmmanuel Grumbach } else if (block) { 22740cd58eaaSEmmanuel Grumbach txq->block++; 22750cd58eaaSEmmanuel Grumbach } 22760cd58eaaSEmmanuel Grumbach 22770cd58eaaSEmmanuel Grumbach spin_unlock_bh(&txq->lock); 22780cd58eaaSEmmanuel Grumbach } 22790cd58eaaSEmmanuel Grumbach } 22800cd58eaaSEmmanuel Grumbach 2281e705c121SKalle Valo #define IWL_FLUSH_WAIT_MS 2000 2282e705c121SKalle Valo 228338398efbSSara Sharon void iwl_trans_pcie_log_scd_error(struct iwl_trans *trans, struct iwl_txq *txq) 228438398efbSSara Sharon { 2285afb84431SEmmanuel Grumbach u32 txq_id = txq->id; 2286afb84431SEmmanuel Grumbach u32 status; 2287afb84431SEmmanuel Grumbach bool active; 2288afb84431SEmmanuel Grumbach u8 fifo; 228938398efbSSara Sharon 2290286ca8ebSLuca Coelho if (trans->trans_cfg->use_tfh) { 2291afb84431SEmmanuel Grumbach IWL_ERR(trans, "Queue %d is stuck %d %d\n", txq_id, 2292bb98ecd4SSara Sharon txq->read_ptr, txq->write_ptr); 2293ae79785fSSara Sharon /* TODO: access new SCD registers and dump them */ 2294ae79785fSSara Sharon return; 2295afb84431SEmmanuel Grumbach } 2296ae79785fSSara Sharon 2297afb84431SEmmanuel Grumbach status = iwl_read_prph(trans, SCD_QUEUE_STATUS_BITS(txq_id)); 2298afb84431SEmmanuel Grumbach fifo = (status >> SCD_QUEUE_STTS_REG_POS_TXF) & 0x7; 2299afb84431SEmmanuel Grumbach active = !!(status & BIT(SCD_QUEUE_STTS_REG_POS_ACTIVE)); 230038398efbSSara Sharon 230138398efbSSara Sharon IWL_ERR(trans, 2302afb84431SEmmanuel Grumbach "Queue %d is %sactive on fifo %d and stuck for %u ms. SW [%d, %d] HW [%d, %d] FH TRB=0x0%x\n", 2303afb84431SEmmanuel Grumbach txq_id, active ? "" : "in", fifo, 2304afb84431SEmmanuel Grumbach jiffies_to_msecs(txq->wd_timeout), 2305afb84431SEmmanuel Grumbach txq->read_ptr, txq->write_ptr, 2306afb84431SEmmanuel Grumbach iwl_read_prph(trans, SCD_QUEUE_RDPTR(txq_id)) & 2307286ca8ebSLuca Coelho (trans->trans_cfg->base_params->max_tfd_queue_size - 1), 2308afb84431SEmmanuel Grumbach iwl_read_prph(trans, SCD_QUEUE_WRPTR(txq_id)) & 2309286ca8ebSLuca Coelho (trans->trans_cfg->base_params->max_tfd_queue_size - 1), 2310afb84431SEmmanuel Grumbach iwl_read_direct32(trans, FH_TX_TRB_REG(fifo))); 231138398efbSSara Sharon } 231238398efbSSara Sharon 231392536c96SSara Sharon static int iwl_trans_pcie_rxq_dma_data(struct iwl_trans *trans, int queue, 231492536c96SSara Sharon struct iwl_trans_rxq_dma_data *data) 231592536c96SSara Sharon { 231692536c96SSara Sharon struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); 231792536c96SSara Sharon 231892536c96SSara Sharon if (queue >= trans->num_rx_queues || !trans_pcie->rxq) 231992536c96SSara Sharon return -EINVAL; 232092536c96SSara Sharon 232192536c96SSara Sharon data->fr_bd_cb = trans_pcie->rxq[queue].bd_dma; 232292536c96SSara Sharon data->urbd_stts_wrptr = trans_pcie->rxq[queue].rb_stts_dma; 232392536c96SSara Sharon data->ur_bd_cb = trans_pcie->rxq[queue].used_bd_dma; 232492536c96SSara Sharon data->fr_bd_wid = 0; 232592536c96SSara Sharon 232692536c96SSara Sharon return 0; 232792536c96SSara Sharon } 232892536c96SSara Sharon 2329d6d517b7SSara Sharon static int iwl_trans_pcie_wait_txq_empty(struct iwl_trans *trans, int txq_idx) 2330e705c121SKalle Valo { 2331e705c121SKalle Valo struct iwl_txq *txq; 2332e705c121SKalle Valo unsigned long now = jiffies; 23332ae48edcSSara Sharon bool overflow_tx; 2334e705c121SKalle Valo u8 wr_ptr; 2335e705c121SKalle Valo 23362b3fae66SMatt Chen /* Make sure the NIC is still alive in the bus */ 2337f60c9e59SEmmanuel Grumbach if (test_bit(STATUS_TRANS_DEAD, &trans->status)) 2338f60c9e59SEmmanuel Grumbach return -ENODEV; 23392b3fae66SMatt Chen 23404f4822b7SMordechay Goodstein if (!test_bit(txq_idx, trans->txqs.queue_used)) 2341d6d517b7SSara Sharon return -EINVAL; 2342e705c121SKalle Valo 2343d6d517b7SSara Sharon IWL_DEBUG_TX_QUEUES(trans, "Emptying queue %d...\n", txq_idx); 23444f4822b7SMordechay Goodstein txq = trans->txqs.txq[txq_idx]; 23452ae48edcSSara Sharon 23462ae48edcSSara Sharon spin_lock_bh(&txq->lock); 23472ae48edcSSara Sharon overflow_tx = txq->overflow_tx || 23482ae48edcSSara Sharon !skb_queue_empty(&txq->overflow_q); 23492ae48edcSSara Sharon spin_unlock_bh(&txq->lock); 23502ae48edcSSara Sharon 23516aa7de05SMark Rutland wr_ptr = READ_ONCE(txq->write_ptr); 2352e705c121SKalle Valo 23532ae48edcSSara Sharon while ((txq->read_ptr != READ_ONCE(txq->write_ptr) || 23542ae48edcSSara Sharon overflow_tx) && 2355e705c121SKalle Valo !time_after(jiffies, 2356e705c121SKalle Valo now + msecs_to_jiffies(IWL_FLUSH_WAIT_MS))) { 23576aa7de05SMark Rutland u8 write_ptr = READ_ONCE(txq->write_ptr); 2358e705c121SKalle Valo 23592ae48edcSSara Sharon /* 23602ae48edcSSara Sharon * If write pointer moved during the wait, warn only 23612ae48edcSSara Sharon * if the TX came from op mode. In case TX came from 23622ae48edcSSara Sharon * trans layer (overflow TX) don't warn. 23632ae48edcSSara Sharon */ 23642ae48edcSSara Sharon if (WARN_ONCE(wr_ptr != write_ptr && !overflow_tx, 2365e705c121SKalle Valo "WR pointer moved while flushing %d -> %d\n", 2366e705c121SKalle Valo wr_ptr, write_ptr)) 2367e705c121SKalle Valo return -ETIMEDOUT; 23682ae48edcSSara Sharon wr_ptr = write_ptr; 23692ae48edcSSara Sharon 2370192185d6SJohannes Berg usleep_range(1000, 2000); 23712ae48edcSSara Sharon 23722ae48edcSSara Sharon spin_lock_bh(&txq->lock); 23732ae48edcSSara Sharon overflow_tx = txq->overflow_tx || 23742ae48edcSSara Sharon !skb_queue_empty(&txq->overflow_q); 23752ae48edcSSara Sharon spin_unlock_bh(&txq->lock); 2376e705c121SKalle Valo } 2377e705c121SKalle Valo 2378bb98ecd4SSara Sharon if (txq->read_ptr != txq->write_ptr) { 2379e705c121SKalle Valo IWL_ERR(trans, 2380d6d517b7SSara Sharon "fail to flush all tx fifo queues Q %d\n", txq_idx); 2381d6d517b7SSara Sharon iwl_trans_pcie_log_scd_error(trans, txq); 2382d6d517b7SSara Sharon return -ETIMEDOUT; 2383e705c121SKalle Valo } 2384e705c121SKalle Valo 2385d6d517b7SSara Sharon IWL_DEBUG_TX_QUEUES(trans, "Queue %d is now empty.\n", txq_idx); 2386d6d517b7SSara Sharon 2387d6d517b7SSara Sharon return 0; 2388d6d517b7SSara Sharon } 2389d6d517b7SSara Sharon 2390d6d517b7SSara Sharon static int iwl_trans_pcie_wait_txqs_empty(struct iwl_trans *trans, u32 txq_bm) 2391d6d517b7SSara Sharon { 2392d6d517b7SSara Sharon int cnt; 2393d6d517b7SSara Sharon int ret = 0; 2394d6d517b7SSara Sharon 2395d6d517b7SSara Sharon /* waiting for all the tx frames complete might take a while */ 239679b6c8feSLuca Coelho for (cnt = 0; 2397286ca8ebSLuca Coelho cnt < trans->trans_cfg->base_params->num_of_queues; 239879b6c8feSLuca Coelho cnt++) { 2399d6d517b7SSara Sharon 24004f4822b7SMordechay Goodstein if (cnt == trans->txqs.cmd.q_id) 2401d6d517b7SSara Sharon continue; 24024f4822b7SMordechay Goodstein if (!test_bit(cnt, trans->txqs.queue_used)) 2403d6d517b7SSara Sharon continue; 2404d6d517b7SSara Sharon if (!(BIT(cnt) & txq_bm)) 2405d6d517b7SSara Sharon continue; 2406d6d517b7SSara Sharon 2407d6d517b7SSara Sharon ret = iwl_trans_pcie_wait_txq_empty(trans, cnt); 240838398efbSSara Sharon if (ret) 2409d6d517b7SSara Sharon break; 2410d6d517b7SSara Sharon } 2411e705c121SKalle Valo 2412e705c121SKalle Valo return ret; 2413e705c121SKalle Valo } 2414e705c121SKalle Valo 2415e705c121SKalle Valo static void iwl_trans_pcie_set_bits_mask(struct iwl_trans *trans, u32 reg, 2416e705c121SKalle Valo u32 mask, u32 value) 2417e705c121SKalle Valo { 2418e705c121SKalle Valo struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); 2419e705c121SKalle Valo unsigned long flags; 2420e705c121SKalle Valo 2421e705c121SKalle Valo spin_lock_irqsave(&trans_pcie->reg_lock, flags); 2422e705c121SKalle Valo __iwl_trans_pcie_set_bits_mask(trans, reg, mask, value); 2423e705c121SKalle Valo spin_unlock_irqrestore(&trans_pcie->reg_lock, flags); 2424e705c121SKalle Valo } 2425e705c121SKalle Valo 2426e705c121SKalle Valo static const char *get_csr_string(int cmd) 2427e705c121SKalle Valo { 2428e705c121SKalle Valo #define IWL_CMD(x) case x: return #x 2429e705c121SKalle Valo switch (cmd) { 2430e705c121SKalle Valo IWL_CMD(CSR_HW_IF_CONFIG_REG); 2431e705c121SKalle Valo IWL_CMD(CSR_INT_COALESCING); 2432e705c121SKalle Valo IWL_CMD(CSR_INT); 2433e705c121SKalle Valo IWL_CMD(CSR_INT_MASK); 2434e705c121SKalle Valo IWL_CMD(CSR_FH_INT_STATUS); 2435e705c121SKalle Valo IWL_CMD(CSR_GPIO_IN); 2436e705c121SKalle Valo IWL_CMD(CSR_RESET); 2437e705c121SKalle Valo IWL_CMD(CSR_GP_CNTRL); 2438e705c121SKalle Valo IWL_CMD(CSR_HW_REV); 2439e705c121SKalle Valo IWL_CMD(CSR_EEPROM_REG); 2440e705c121SKalle Valo IWL_CMD(CSR_EEPROM_GP); 2441e705c121SKalle Valo IWL_CMD(CSR_OTP_GP_REG); 2442e705c121SKalle Valo IWL_CMD(CSR_GIO_REG); 2443e705c121SKalle Valo IWL_CMD(CSR_GP_UCODE_REG); 2444e705c121SKalle Valo IWL_CMD(CSR_GP_DRIVER_REG); 2445e705c121SKalle Valo IWL_CMD(CSR_UCODE_DRV_GP1); 2446e705c121SKalle Valo IWL_CMD(CSR_UCODE_DRV_GP2); 2447e705c121SKalle Valo IWL_CMD(CSR_LED_REG); 2448e705c121SKalle Valo IWL_CMD(CSR_DRAM_INT_TBL_REG); 2449e705c121SKalle Valo IWL_CMD(CSR_GIO_CHICKEN_BITS); 2450e705c121SKalle Valo IWL_CMD(CSR_ANA_PLL_CFG); 2451e705c121SKalle Valo IWL_CMD(CSR_HW_REV_WA_REG); 2452e705c121SKalle Valo IWL_CMD(CSR_MONITOR_STATUS_REG); 2453e705c121SKalle Valo IWL_CMD(CSR_DBG_HPET_MEM_REG); 2454e705c121SKalle Valo default: 2455e705c121SKalle Valo return "UNKNOWN"; 2456e705c121SKalle Valo } 2457e705c121SKalle Valo #undef IWL_CMD 2458e705c121SKalle Valo } 2459e705c121SKalle Valo 2460e705c121SKalle Valo void iwl_pcie_dump_csr(struct iwl_trans *trans) 2461e705c121SKalle Valo { 2462e705c121SKalle Valo int i; 2463e705c121SKalle Valo static const u32 csr_tbl[] = { 2464e705c121SKalle Valo CSR_HW_IF_CONFIG_REG, 2465e705c121SKalle Valo CSR_INT_COALESCING, 2466e705c121SKalle Valo CSR_INT, 2467e705c121SKalle Valo CSR_INT_MASK, 2468e705c121SKalle Valo CSR_FH_INT_STATUS, 2469e705c121SKalle Valo CSR_GPIO_IN, 2470e705c121SKalle Valo CSR_RESET, 2471e705c121SKalle Valo CSR_GP_CNTRL, 2472e705c121SKalle Valo CSR_HW_REV, 2473e705c121SKalle Valo CSR_EEPROM_REG, 2474e705c121SKalle Valo CSR_EEPROM_GP, 2475e705c121SKalle Valo CSR_OTP_GP_REG, 2476e705c121SKalle Valo CSR_GIO_REG, 2477e705c121SKalle Valo CSR_GP_UCODE_REG, 2478e705c121SKalle Valo CSR_GP_DRIVER_REG, 2479e705c121SKalle Valo CSR_UCODE_DRV_GP1, 2480e705c121SKalle Valo CSR_UCODE_DRV_GP2, 2481e705c121SKalle Valo CSR_LED_REG, 2482e705c121SKalle Valo CSR_DRAM_INT_TBL_REG, 2483e705c121SKalle Valo CSR_GIO_CHICKEN_BITS, 2484e705c121SKalle Valo CSR_ANA_PLL_CFG, 2485e705c121SKalle Valo CSR_MONITOR_STATUS_REG, 2486e705c121SKalle Valo CSR_HW_REV_WA_REG, 2487e705c121SKalle Valo CSR_DBG_HPET_MEM_REG 2488e705c121SKalle Valo }; 2489e705c121SKalle Valo IWL_ERR(trans, "CSR values:\n"); 2490e705c121SKalle Valo IWL_ERR(trans, "(2nd byte of CSR_INT_COALESCING is " 2491e705c121SKalle Valo "CSR_INT_PERIODIC_REG)\n"); 2492e705c121SKalle Valo for (i = 0; i < ARRAY_SIZE(csr_tbl); i++) { 2493e705c121SKalle Valo IWL_ERR(trans, " %25s: 0X%08x\n", 2494e705c121SKalle Valo get_csr_string(csr_tbl[i]), 2495e705c121SKalle Valo iwl_read32(trans, csr_tbl[i])); 2496e705c121SKalle Valo } 2497e705c121SKalle Valo } 2498e705c121SKalle Valo 2499e705c121SKalle Valo #ifdef CONFIG_IWLWIFI_DEBUGFS 2500e705c121SKalle Valo /* create and remove of files */ 2501e705c121SKalle Valo #define DEBUGFS_ADD_FILE(name, parent, mode) do { \ 2502cf5d5663SGreg Kroah-Hartman debugfs_create_file(#name, mode, parent, trans, \ 2503cf5d5663SGreg Kroah-Hartman &iwl_dbgfs_##name##_ops); \ 2504e705c121SKalle Valo } while (0) 2505e705c121SKalle Valo 2506e705c121SKalle Valo /* file operation */ 2507e705c121SKalle Valo #define DEBUGFS_READ_FILE_OPS(name) \ 2508e705c121SKalle Valo static const struct file_operations iwl_dbgfs_##name##_ops = { \ 2509e705c121SKalle Valo .read = iwl_dbgfs_##name##_read, \ 2510e705c121SKalle Valo .open = simple_open, \ 2511e705c121SKalle Valo .llseek = generic_file_llseek, \ 2512e705c121SKalle Valo }; 2513e705c121SKalle Valo 2514e705c121SKalle Valo #define DEBUGFS_WRITE_FILE_OPS(name) \ 2515e705c121SKalle Valo static const struct file_operations iwl_dbgfs_##name##_ops = { \ 2516e705c121SKalle Valo .write = iwl_dbgfs_##name##_write, \ 2517e705c121SKalle Valo .open = simple_open, \ 2518e705c121SKalle Valo .llseek = generic_file_llseek, \ 2519e705c121SKalle Valo }; 2520e705c121SKalle Valo 2521e705c121SKalle Valo #define DEBUGFS_READ_WRITE_FILE_OPS(name) \ 2522e705c121SKalle Valo static const struct file_operations iwl_dbgfs_##name##_ops = { \ 2523e705c121SKalle Valo .write = iwl_dbgfs_##name##_write, \ 2524e705c121SKalle Valo .read = iwl_dbgfs_##name##_read, \ 2525e705c121SKalle Valo .open = simple_open, \ 2526e705c121SKalle Valo .llseek = generic_file_llseek, \ 2527e705c121SKalle Valo }; 2528e705c121SKalle Valo 2529df67a1beSJohannes Berg struct iwl_dbgfs_tx_queue_priv { 2530df67a1beSJohannes Berg struct iwl_trans *trans; 2531df67a1beSJohannes Berg }; 2532df67a1beSJohannes Berg 2533df67a1beSJohannes Berg struct iwl_dbgfs_tx_queue_state { 2534df67a1beSJohannes Berg loff_t pos; 2535df67a1beSJohannes Berg }; 2536df67a1beSJohannes Berg 2537df67a1beSJohannes Berg static void *iwl_dbgfs_tx_queue_seq_start(struct seq_file *seq, loff_t *pos) 2538e705c121SKalle Valo { 2539df67a1beSJohannes Berg struct iwl_dbgfs_tx_queue_priv *priv = seq->private; 2540df67a1beSJohannes Berg struct iwl_dbgfs_tx_queue_state *state; 2541df67a1beSJohannes Berg 2542df67a1beSJohannes Berg if (*pos >= priv->trans->trans_cfg->base_params->num_of_queues) 2543df67a1beSJohannes Berg return NULL; 2544df67a1beSJohannes Berg 2545df67a1beSJohannes Berg state = kmalloc(sizeof(*state), GFP_KERNEL); 2546df67a1beSJohannes Berg if (!state) 2547df67a1beSJohannes Berg return NULL; 2548df67a1beSJohannes Berg state->pos = *pos; 2549df67a1beSJohannes Berg return state; 2550df67a1beSJohannes Berg } 2551df67a1beSJohannes Berg 2552df67a1beSJohannes Berg static void *iwl_dbgfs_tx_queue_seq_next(struct seq_file *seq, 2553df67a1beSJohannes Berg void *v, loff_t *pos) 2554df67a1beSJohannes Berg { 2555df67a1beSJohannes Berg struct iwl_dbgfs_tx_queue_priv *priv = seq->private; 2556df67a1beSJohannes Berg struct iwl_dbgfs_tx_queue_state *state = v; 2557df67a1beSJohannes Berg 2558df67a1beSJohannes Berg *pos = ++state->pos; 2559df67a1beSJohannes Berg 2560df67a1beSJohannes Berg if (*pos >= priv->trans->trans_cfg->base_params->num_of_queues) 2561df67a1beSJohannes Berg return NULL; 2562df67a1beSJohannes Berg 2563df67a1beSJohannes Berg return state; 2564df67a1beSJohannes Berg } 2565df67a1beSJohannes Berg 2566df67a1beSJohannes Berg static void iwl_dbgfs_tx_queue_seq_stop(struct seq_file *seq, void *v) 2567df67a1beSJohannes Berg { 2568df67a1beSJohannes Berg kfree(v); 2569df67a1beSJohannes Berg } 2570df67a1beSJohannes Berg 2571df67a1beSJohannes Berg static int iwl_dbgfs_tx_queue_seq_show(struct seq_file *seq, void *v) 2572df67a1beSJohannes Berg { 2573df67a1beSJohannes Berg struct iwl_dbgfs_tx_queue_priv *priv = seq->private; 2574df67a1beSJohannes Berg struct iwl_dbgfs_tx_queue_state *state = v; 2575df67a1beSJohannes Berg struct iwl_trans *trans = priv->trans; 25764f4822b7SMordechay Goodstein struct iwl_txq *txq = trans->txqs.txq[state->pos]; 2577e705c121SKalle Valo 2578df67a1beSJohannes Berg seq_printf(seq, "hwq %.3u: used=%d stopped=%d ", 2579df67a1beSJohannes Berg (unsigned int)state->pos, 25804f4822b7SMordechay Goodstein !!test_bit(state->pos, trans->txqs.queue_used), 25814f4822b7SMordechay Goodstein !!test_bit(state->pos, trans->txqs.queue_stopped)); 2582df67a1beSJohannes Berg if (txq) 2583df67a1beSJohannes Berg seq_printf(seq, 258495a9e44fSJohannes Berg "read=%u write=%u need_update=%d frozen=%d n_window=%d ampdu=%d", 2585df67a1beSJohannes Berg txq->read_ptr, txq->write_ptr, 258695a9e44fSJohannes Berg txq->need_update, txq->frozen, 258795a9e44fSJohannes Berg txq->n_window, txq->ampdu); 2588df67a1beSJohannes Berg else 2589df67a1beSJohannes Berg seq_puts(seq, "(unallocated)"); 2590e705c121SKalle Valo 25914f4822b7SMordechay Goodstein if (state->pos == trans->txqs.cmd.q_id) 2592df67a1beSJohannes Berg seq_puts(seq, " (HCMD)"); 2593df67a1beSJohannes Berg seq_puts(seq, "\n"); 2594e705c121SKalle Valo 2595df67a1beSJohannes Berg return 0; 2596df67a1beSJohannes Berg } 2597df67a1beSJohannes Berg 2598df67a1beSJohannes Berg static const struct seq_operations iwl_dbgfs_tx_queue_seq_ops = { 2599df67a1beSJohannes Berg .start = iwl_dbgfs_tx_queue_seq_start, 2600df67a1beSJohannes Berg .next = iwl_dbgfs_tx_queue_seq_next, 2601df67a1beSJohannes Berg .stop = iwl_dbgfs_tx_queue_seq_stop, 2602df67a1beSJohannes Berg .show = iwl_dbgfs_tx_queue_seq_show, 2603df67a1beSJohannes Berg }; 2604df67a1beSJohannes Berg 2605df67a1beSJohannes Berg static int iwl_dbgfs_tx_queue_open(struct inode *inode, struct file *filp) 2606df67a1beSJohannes Berg { 2607df67a1beSJohannes Berg struct iwl_dbgfs_tx_queue_priv *priv; 2608df67a1beSJohannes Berg 2609df67a1beSJohannes Berg priv = __seq_open_private(filp, &iwl_dbgfs_tx_queue_seq_ops, 2610df67a1beSJohannes Berg sizeof(*priv)); 2611df67a1beSJohannes Berg 2612df67a1beSJohannes Berg if (!priv) 2613e705c121SKalle Valo return -ENOMEM; 2614e705c121SKalle Valo 2615df67a1beSJohannes Berg priv->trans = inode->i_private; 2616df67a1beSJohannes Berg return 0; 2617e705c121SKalle Valo } 2618e705c121SKalle Valo 2619e705c121SKalle Valo static ssize_t iwl_dbgfs_rx_queue_read(struct file *file, 2620e705c121SKalle Valo char __user *user_buf, 2621e705c121SKalle Valo size_t count, loff_t *ppos) 2622e705c121SKalle Valo { 2623e705c121SKalle Valo struct iwl_trans *trans = file->private_data; 2624e705c121SKalle Valo struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); 262578485054SSara Sharon char *buf; 262678485054SSara Sharon int pos = 0, i, ret; 2627eb3dc36eSColin Ian King size_t bufsz; 2628e705c121SKalle Valo 262978485054SSara Sharon bufsz = sizeof(char) * 121 * trans->num_rx_queues; 263078485054SSara Sharon 263178485054SSara Sharon if (!trans_pcie->rxq) 263278485054SSara Sharon return -EAGAIN; 263378485054SSara Sharon 263478485054SSara Sharon buf = kzalloc(bufsz, GFP_KERNEL); 263578485054SSara Sharon if (!buf) 263678485054SSara Sharon return -ENOMEM; 263778485054SSara Sharon 263878485054SSara Sharon for (i = 0; i < trans->num_rx_queues && pos < bufsz; i++) { 263978485054SSara Sharon struct iwl_rxq *rxq = &trans_pcie->rxq[i]; 264078485054SSara Sharon 264178485054SSara Sharon pos += scnprintf(buf + pos, bufsz - pos, "queue#: %2d\n", 264278485054SSara Sharon i); 264378485054SSara Sharon pos += scnprintf(buf + pos, bufsz - pos, "\tread: %u\n", 2644e705c121SKalle Valo rxq->read); 264578485054SSara Sharon pos += scnprintf(buf + pos, bufsz - pos, "\twrite: %u\n", 2646e705c121SKalle Valo rxq->write); 264778485054SSara Sharon pos += scnprintf(buf + pos, bufsz - pos, "\twrite_actual: %u\n", 2648e705c121SKalle Valo rxq->write_actual); 264978485054SSara Sharon pos += scnprintf(buf + pos, bufsz - pos, "\tneed_update: %2d\n", 2650e705c121SKalle Valo rxq->need_update); 265178485054SSara Sharon pos += scnprintf(buf + pos, bufsz - pos, "\tfree_count: %u\n", 2652e705c121SKalle Valo rxq->free_count); 2653e705c121SKalle Valo if (rxq->rb_stts) { 26540307c839SGolan Ben Ami u32 r = __le16_to_cpu(iwl_get_closed_rb_stts(trans, 26550307c839SGolan Ben Ami rxq)); 265678485054SSara Sharon pos += scnprintf(buf + pos, bufsz - pos, 265778485054SSara Sharon "\tclosed_rb_num: %u\n", 26580307c839SGolan Ben Ami r & 0x0FFF); 2659e705c121SKalle Valo } else { 2660e705c121SKalle Valo pos += scnprintf(buf + pos, bufsz - pos, 266178485054SSara Sharon "\tclosed_rb_num: Not Allocated\n"); 2662e705c121SKalle Valo } 266378485054SSara Sharon } 266478485054SSara Sharon ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos); 266578485054SSara Sharon kfree(buf); 266678485054SSara Sharon 266778485054SSara Sharon return ret; 2668e705c121SKalle Valo } 2669e705c121SKalle Valo 2670e705c121SKalle Valo static ssize_t iwl_dbgfs_interrupt_read(struct file *file, 2671e705c121SKalle Valo char __user *user_buf, 2672e705c121SKalle Valo size_t count, loff_t *ppos) 2673e705c121SKalle Valo { 2674e705c121SKalle Valo struct iwl_trans *trans = file->private_data; 2675e705c121SKalle Valo struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); 2676e705c121SKalle Valo struct isr_statistics *isr_stats = &trans_pcie->isr_stats; 2677e705c121SKalle Valo 2678e705c121SKalle Valo int pos = 0; 2679e705c121SKalle Valo char *buf; 2680e705c121SKalle Valo int bufsz = 24 * 64; /* 24 items * 64 char per item */ 2681e705c121SKalle Valo ssize_t ret; 2682e705c121SKalle Valo 2683e705c121SKalle Valo buf = kzalloc(bufsz, GFP_KERNEL); 2684e705c121SKalle Valo if (!buf) 2685e705c121SKalle Valo return -ENOMEM; 2686e705c121SKalle Valo 2687e705c121SKalle Valo pos += scnprintf(buf + pos, bufsz - pos, 2688e705c121SKalle Valo "Interrupt Statistics Report:\n"); 2689e705c121SKalle Valo 2690e705c121SKalle Valo pos += scnprintf(buf + pos, bufsz - pos, "HW Error:\t\t\t %u\n", 2691e705c121SKalle Valo isr_stats->hw); 2692e705c121SKalle Valo pos += scnprintf(buf + pos, bufsz - pos, "SW Error:\t\t\t %u\n", 2693e705c121SKalle Valo isr_stats->sw); 2694e705c121SKalle Valo if (isr_stats->sw || isr_stats->hw) { 2695e705c121SKalle Valo pos += scnprintf(buf + pos, bufsz - pos, 2696e705c121SKalle Valo "\tLast Restarting Code: 0x%X\n", 2697e705c121SKalle Valo isr_stats->err_code); 2698e705c121SKalle Valo } 2699e705c121SKalle Valo #ifdef CONFIG_IWLWIFI_DEBUG 2700e705c121SKalle Valo pos += scnprintf(buf + pos, bufsz - pos, "Frame transmitted:\t\t %u\n", 2701e705c121SKalle Valo isr_stats->sch); 2702e705c121SKalle Valo pos += scnprintf(buf + pos, bufsz - pos, "Alive interrupt:\t\t %u\n", 2703e705c121SKalle Valo isr_stats->alive); 2704e705c121SKalle Valo #endif 2705e705c121SKalle Valo pos += scnprintf(buf + pos, bufsz - pos, 2706e705c121SKalle Valo "HW RF KILL switch toggled:\t %u\n", isr_stats->rfkill); 2707e705c121SKalle Valo 2708e705c121SKalle Valo pos += scnprintf(buf + pos, bufsz - pos, "CT KILL:\t\t\t %u\n", 2709e705c121SKalle Valo isr_stats->ctkill); 2710e705c121SKalle Valo 2711e705c121SKalle Valo pos += scnprintf(buf + pos, bufsz - pos, "Wakeup Interrupt:\t\t %u\n", 2712e705c121SKalle Valo isr_stats->wakeup); 2713e705c121SKalle Valo 2714e705c121SKalle Valo pos += scnprintf(buf + pos, bufsz - pos, 2715e705c121SKalle Valo "Rx command responses:\t\t %u\n", isr_stats->rx); 2716e705c121SKalle Valo 2717e705c121SKalle Valo pos += scnprintf(buf + pos, bufsz - pos, "Tx/FH interrupt:\t\t %u\n", 2718e705c121SKalle Valo isr_stats->tx); 2719e705c121SKalle Valo 2720e705c121SKalle Valo pos += scnprintf(buf + pos, bufsz - pos, "Unexpected INTA:\t\t %u\n", 2721e705c121SKalle Valo isr_stats->unhandled); 2722e705c121SKalle Valo 2723e705c121SKalle Valo ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos); 2724e705c121SKalle Valo kfree(buf); 2725e705c121SKalle Valo return ret; 2726e705c121SKalle Valo } 2727e705c121SKalle Valo 2728e705c121SKalle Valo static ssize_t iwl_dbgfs_interrupt_write(struct file *file, 2729e705c121SKalle Valo const char __user *user_buf, 2730e705c121SKalle Valo size_t count, loff_t *ppos) 2731e705c121SKalle Valo { 2732e705c121SKalle Valo struct iwl_trans *trans = file->private_data; 2733e705c121SKalle Valo struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); 2734e705c121SKalle Valo struct isr_statistics *isr_stats = &trans_pcie->isr_stats; 2735e705c121SKalle Valo u32 reset_flag; 2736078f1131SJohannes Berg int ret; 2737e705c121SKalle Valo 2738078f1131SJohannes Berg ret = kstrtou32_from_user(user_buf, count, 16, &reset_flag); 2739078f1131SJohannes Berg if (ret) 2740078f1131SJohannes Berg return ret; 2741e705c121SKalle Valo if (reset_flag == 0) 2742e705c121SKalle Valo memset(isr_stats, 0, sizeof(*isr_stats)); 2743e705c121SKalle Valo 2744e705c121SKalle Valo return count; 2745e705c121SKalle Valo } 2746e705c121SKalle Valo 2747e705c121SKalle Valo static ssize_t iwl_dbgfs_csr_write(struct file *file, 2748e705c121SKalle Valo const char __user *user_buf, 2749e705c121SKalle Valo size_t count, loff_t *ppos) 2750e705c121SKalle Valo { 2751e705c121SKalle Valo struct iwl_trans *trans = file->private_data; 2752e705c121SKalle Valo 2753e705c121SKalle Valo iwl_pcie_dump_csr(trans); 2754e705c121SKalle Valo 2755e705c121SKalle Valo return count; 2756e705c121SKalle Valo } 2757e705c121SKalle Valo 2758e705c121SKalle Valo static ssize_t iwl_dbgfs_fh_reg_read(struct file *file, 2759e705c121SKalle Valo char __user *user_buf, 2760e705c121SKalle Valo size_t count, loff_t *ppos) 2761e705c121SKalle Valo { 2762e705c121SKalle Valo struct iwl_trans *trans = file->private_data; 2763e705c121SKalle Valo char *buf = NULL; 2764e705c121SKalle Valo ssize_t ret; 2765e705c121SKalle Valo 2766e705c121SKalle Valo ret = iwl_dump_fh(trans, &buf); 2767e705c121SKalle Valo if (ret < 0) 2768e705c121SKalle Valo return ret; 2769e705c121SKalle Valo if (!buf) 2770e705c121SKalle Valo return -EINVAL; 2771e705c121SKalle Valo ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret); 2772e705c121SKalle Valo kfree(buf); 2773e705c121SKalle Valo return ret; 2774e705c121SKalle Valo } 2775e705c121SKalle Valo 2776fa4de7f7SJohannes Berg static ssize_t iwl_dbgfs_rfkill_read(struct file *file, 2777fa4de7f7SJohannes Berg char __user *user_buf, 2778fa4de7f7SJohannes Berg size_t count, loff_t *ppos) 2779fa4de7f7SJohannes Berg { 2780fa4de7f7SJohannes Berg struct iwl_trans *trans = file->private_data; 2781fa4de7f7SJohannes Berg struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); 2782fa4de7f7SJohannes Berg char buf[100]; 2783fa4de7f7SJohannes Berg int pos; 2784fa4de7f7SJohannes Berg 2785fa4de7f7SJohannes Berg pos = scnprintf(buf, sizeof(buf), "debug: %d\nhw: %d\n", 2786fa4de7f7SJohannes Berg trans_pcie->debug_rfkill, 2787fa4de7f7SJohannes Berg !(iwl_read32(trans, CSR_GP_CNTRL) & 2788fa4de7f7SJohannes Berg CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)); 2789fa4de7f7SJohannes Berg 2790fa4de7f7SJohannes Berg return simple_read_from_buffer(user_buf, count, ppos, buf, pos); 2791fa4de7f7SJohannes Berg } 2792fa4de7f7SJohannes Berg 2793fa4de7f7SJohannes Berg static ssize_t iwl_dbgfs_rfkill_write(struct file *file, 2794fa4de7f7SJohannes Berg const char __user *user_buf, 2795fa4de7f7SJohannes Berg size_t count, loff_t *ppos) 2796fa4de7f7SJohannes Berg { 2797fa4de7f7SJohannes Berg struct iwl_trans *trans = file->private_data; 2798fa4de7f7SJohannes Berg struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); 2799c5bf4fa1SJohannes Berg bool new_value; 2800fa4de7f7SJohannes Berg int ret; 2801fa4de7f7SJohannes Berg 2802c5bf4fa1SJohannes Berg ret = kstrtobool_from_user(user_buf, count, &new_value); 2803fa4de7f7SJohannes Berg if (ret) 2804fa4de7f7SJohannes Berg return ret; 2805c5bf4fa1SJohannes Berg if (new_value == trans_pcie->debug_rfkill) 2806fa4de7f7SJohannes Berg return count; 2807fa4de7f7SJohannes Berg IWL_WARN(trans, "changing debug rfkill %d->%d\n", 2808c5bf4fa1SJohannes Berg trans_pcie->debug_rfkill, new_value); 2809c5bf4fa1SJohannes Berg trans_pcie->debug_rfkill = new_value; 2810fa4de7f7SJohannes Berg iwl_pcie_handle_rfkill_irq(trans); 2811fa4de7f7SJohannes Berg 2812fa4de7f7SJohannes Berg return count; 2813fa4de7f7SJohannes Berg } 2814fa4de7f7SJohannes Berg 2815f7805b33SLior Cohen static int iwl_dbgfs_monitor_data_open(struct inode *inode, 2816f7805b33SLior Cohen struct file *file) 2817f7805b33SLior Cohen { 2818f7805b33SLior Cohen struct iwl_trans *trans = inode->i_private; 2819f7805b33SLior Cohen struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); 2820f7805b33SLior Cohen 282191c28b83SShahar S Matityahu if (!trans->dbg.dest_tlv || 282291c28b83SShahar S Matityahu trans->dbg.dest_tlv->monitor_mode != EXTERNAL_MODE) { 2823f7805b33SLior Cohen IWL_ERR(trans, "Debug destination is not set to DRAM\n"); 2824f7805b33SLior Cohen return -ENOENT; 2825f7805b33SLior Cohen } 2826f7805b33SLior Cohen 2827f7805b33SLior Cohen if (trans_pcie->fw_mon_data.state != IWL_FW_MON_DBGFS_STATE_CLOSED) 2828f7805b33SLior Cohen return -EBUSY; 2829f7805b33SLior Cohen 2830f7805b33SLior Cohen trans_pcie->fw_mon_data.state = IWL_FW_MON_DBGFS_STATE_OPEN; 2831f7805b33SLior Cohen return simple_open(inode, file); 2832f7805b33SLior Cohen } 2833f7805b33SLior Cohen 2834f7805b33SLior Cohen static int iwl_dbgfs_monitor_data_release(struct inode *inode, 2835f7805b33SLior Cohen struct file *file) 2836f7805b33SLior Cohen { 2837f7805b33SLior Cohen struct iwl_trans_pcie *trans_pcie = 2838f7805b33SLior Cohen IWL_TRANS_GET_PCIE_TRANS(inode->i_private); 2839f7805b33SLior Cohen 2840f7805b33SLior Cohen if (trans_pcie->fw_mon_data.state == IWL_FW_MON_DBGFS_STATE_OPEN) 2841f7805b33SLior Cohen trans_pcie->fw_mon_data.state = IWL_FW_MON_DBGFS_STATE_CLOSED; 2842f7805b33SLior Cohen return 0; 2843f7805b33SLior Cohen } 2844f7805b33SLior Cohen 2845f7805b33SLior Cohen static bool iwl_write_to_user_buf(char __user *user_buf, ssize_t count, 2846f7805b33SLior Cohen void *buf, ssize_t *size, 2847f7805b33SLior Cohen ssize_t *bytes_copied) 2848f7805b33SLior Cohen { 2849f7805b33SLior Cohen int buf_size_left = count - *bytes_copied; 2850f7805b33SLior Cohen 2851f7805b33SLior Cohen buf_size_left = buf_size_left - (buf_size_left % sizeof(u32)); 2852f7805b33SLior Cohen if (*size > buf_size_left) 2853f7805b33SLior Cohen *size = buf_size_left; 2854f7805b33SLior Cohen 2855f7805b33SLior Cohen *size -= copy_to_user(user_buf, buf, *size); 2856f7805b33SLior Cohen *bytes_copied += *size; 2857f7805b33SLior Cohen 2858f7805b33SLior Cohen if (buf_size_left == *size) 2859f7805b33SLior Cohen return true; 2860f7805b33SLior Cohen return false; 2861f7805b33SLior Cohen } 2862f7805b33SLior Cohen 2863f7805b33SLior Cohen static ssize_t iwl_dbgfs_monitor_data_read(struct file *file, 2864f7805b33SLior Cohen char __user *user_buf, 2865f7805b33SLior Cohen size_t count, loff_t *ppos) 2866f7805b33SLior Cohen { 2867f7805b33SLior Cohen struct iwl_trans *trans = file->private_data; 2868f7805b33SLior Cohen struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); 286969f0e505SShahar S Matityahu void *cpu_addr = (void *)trans->dbg.fw_mon.block, *curr_buf; 2870f7805b33SLior Cohen struct cont_rec *data = &trans_pcie->fw_mon_data; 2871f7805b33SLior Cohen u32 write_ptr_addr, wrap_cnt_addr, write_ptr, wrap_cnt; 2872f7805b33SLior Cohen ssize_t size, bytes_copied = 0; 2873f7805b33SLior Cohen bool b_full; 2874f7805b33SLior Cohen 287591c28b83SShahar S Matityahu if (trans->dbg.dest_tlv) { 2876f7805b33SLior Cohen write_ptr_addr = 287791c28b83SShahar S Matityahu le32_to_cpu(trans->dbg.dest_tlv->write_ptr_reg); 287891c28b83SShahar S Matityahu wrap_cnt_addr = le32_to_cpu(trans->dbg.dest_tlv->wrap_count); 2879f7805b33SLior Cohen } else { 2880f7805b33SLior Cohen write_ptr_addr = MON_BUFF_WRPTR; 2881f7805b33SLior Cohen wrap_cnt_addr = MON_BUFF_CYCLE_CNT; 2882f7805b33SLior Cohen } 2883f7805b33SLior Cohen 288491c28b83SShahar S Matityahu if (unlikely(!trans->dbg.rec_on)) 2885f7805b33SLior Cohen return 0; 2886f7805b33SLior Cohen 2887f7805b33SLior Cohen mutex_lock(&data->mutex); 2888f7805b33SLior Cohen if (data->state == 2889f7805b33SLior Cohen IWL_FW_MON_DBGFS_STATE_DISABLED) { 2890f7805b33SLior Cohen mutex_unlock(&data->mutex); 2891f7805b33SLior Cohen return 0; 2892f7805b33SLior Cohen } 2893f7805b33SLior Cohen 2894f7805b33SLior Cohen /* write_ptr position in bytes rather then DW */ 2895f7805b33SLior Cohen write_ptr = iwl_read_prph(trans, write_ptr_addr) * sizeof(u32); 2896f7805b33SLior Cohen wrap_cnt = iwl_read_prph(trans, wrap_cnt_addr); 2897f7805b33SLior Cohen 2898f7805b33SLior Cohen if (data->prev_wrap_cnt == wrap_cnt) { 2899f7805b33SLior Cohen size = write_ptr - data->prev_wr_ptr; 2900f7805b33SLior Cohen curr_buf = cpu_addr + data->prev_wr_ptr; 2901f7805b33SLior Cohen b_full = iwl_write_to_user_buf(user_buf, count, 2902f7805b33SLior Cohen curr_buf, &size, 2903f7805b33SLior Cohen &bytes_copied); 2904f7805b33SLior Cohen data->prev_wr_ptr += size; 2905f7805b33SLior Cohen 2906f7805b33SLior Cohen } else if (data->prev_wrap_cnt == wrap_cnt - 1 && 2907f7805b33SLior Cohen write_ptr < data->prev_wr_ptr) { 290869f0e505SShahar S Matityahu size = trans->dbg.fw_mon.size - data->prev_wr_ptr; 2909f7805b33SLior Cohen curr_buf = cpu_addr + data->prev_wr_ptr; 2910f7805b33SLior Cohen b_full = iwl_write_to_user_buf(user_buf, count, 2911f7805b33SLior Cohen curr_buf, &size, 2912f7805b33SLior Cohen &bytes_copied); 2913f7805b33SLior Cohen data->prev_wr_ptr += size; 2914f7805b33SLior Cohen 2915f7805b33SLior Cohen if (!b_full) { 2916f7805b33SLior Cohen size = write_ptr; 2917f7805b33SLior Cohen b_full = iwl_write_to_user_buf(user_buf, count, 2918f7805b33SLior Cohen cpu_addr, &size, 2919f7805b33SLior Cohen &bytes_copied); 2920f7805b33SLior Cohen data->prev_wr_ptr = size; 2921f7805b33SLior Cohen data->prev_wrap_cnt++; 2922f7805b33SLior Cohen } 2923f7805b33SLior Cohen } else { 2924f7805b33SLior Cohen if (data->prev_wrap_cnt == wrap_cnt - 1 && 2925f7805b33SLior Cohen write_ptr > data->prev_wr_ptr) 2926f7805b33SLior Cohen IWL_WARN(trans, 2927f7805b33SLior Cohen "write pointer passed previous write pointer, start copying from the beginning\n"); 2928f7805b33SLior Cohen else if (!unlikely(data->prev_wrap_cnt == 0 && 2929f7805b33SLior Cohen data->prev_wr_ptr == 0)) 2930f7805b33SLior Cohen IWL_WARN(trans, 2931f7805b33SLior Cohen "monitor data is out of sync, start copying from the beginning\n"); 2932f7805b33SLior Cohen 2933f7805b33SLior Cohen size = write_ptr; 2934f7805b33SLior Cohen b_full = iwl_write_to_user_buf(user_buf, count, 2935f7805b33SLior Cohen cpu_addr, &size, 2936f7805b33SLior Cohen &bytes_copied); 2937f7805b33SLior Cohen data->prev_wr_ptr = size; 2938f7805b33SLior Cohen data->prev_wrap_cnt = wrap_cnt; 2939f7805b33SLior Cohen } 2940f7805b33SLior Cohen 2941f7805b33SLior Cohen mutex_unlock(&data->mutex); 2942f7805b33SLior Cohen 2943f7805b33SLior Cohen return bytes_copied; 2944f7805b33SLior Cohen } 2945f7805b33SLior Cohen 2946e705c121SKalle Valo DEBUGFS_READ_WRITE_FILE_OPS(interrupt); 2947e705c121SKalle Valo DEBUGFS_READ_FILE_OPS(fh_reg); 2948e705c121SKalle Valo DEBUGFS_READ_FILE_OPS(rx_queue); 2949e705c121SKalle Valo DEBUGFS_WRITE_FILE_OPS(csr); 2950fa4de7f7SJohannes Berg DEBUGFS_READ_WRITE_FILE_OPS(rfkill); 2951df67a1beSJohannes Berg static const struct file_operations iwl_dbgfs_tx_queue_ops = { 2952df67a1beSJohannes Berg .owner = THIS_MODULE, 2953df67a1beSJohannes Berg .open = iwl_dbgfs_tx_queue_open, 2954df67a1beSJohannes Berg .read = seq_read, 2955df67a1beSJohannes Berg .llseek = seq_lseek, 2956df67a1beSJohannes Berg .release = seq_release_private, 2957df67a1beSJohannes Berg }; 2958e705c121SKalle Valo 2959f7805b33SLior Cohen static const struct file_operations iwl_dbgfs_monitor_data_ops = { 2960f7805b33SLior Cohen .read = iwl_dbgfs_monitor_data_read, 2961f7805b33SLior Cohen .open = iwl_dbgfs_monitor_data_open, 2962f7805b33SLior Cohen .release = iwl_dbgfs_monitor_data_release, 2963f7805b33SLior Cohen }; 2964f7805b33SLior Cohen 2965f8a1edb7SJohannes Berg /* Create the debugfs files and directories */ 2966cf5d5663SGreg Kroah-Hartman void iwl_trans_pcie_dbgfs_register(struct iwl_trans *trans) 2967e705c121SKalle Valo { 2968f8a1edb7SJohannes Berg struct dentry *dir = trans->dbgfs_dir; 2969f8a1edb7SJohannes Berg 29702ef00c53SJoe Perches DEBUGFS_ADD_FILE(rx_queue, dir, 0400); 29712ef00c53SJoe Perches DEBUGFS_ADD_FILE(tx_queue, dir, 0400); 29722ef00c53SJoe Perches DEBUGFS_ADD_FILE(interrupt, dir, 0600); 29732ef00c53SJoe Perches DEBUGFS_ADD_FILE(csr, dir, 0200); 29742ef00c53SJoe Perches DEBUGFS_ADD_FILE(fh_reg, dir, 0400); 29752ef00c53SJoe Perches DEBUGFS_ADD_FILE(rfkill, dir, 0600); 2976f7805b33SLior Cohen DEBUGFS_ADD_FILE(monitor_data, dir, 0400); 2977e705c121SKalle Valo } 2978f7805b33SLior Cohen 2979f7805b33SLior Cohen static void iwl_trans_pcie_debugfs_cleanup(struct iwl_trans *trans) 2980f7805b33SLior Cohen { 2981f7805b33SLior Cohen struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); 2982f7805b33SLior Cohen struct cont_rec *data = &trans_pcie->fw_mon_data; 2983f7805b33SLior Cohen 2984f7805b33SLior Cohen mutex_lock(&data->mutex); 2985f7805b33SLior Cohen data->state = IWL_FW_MON_DBGFS_STATE_DISABLED; 2986f7805b33SLior Cohen mutex_unlock(&data->mutex); 2987f7805b33SLior Cohen } 2988e705c121SKalle Valo #endif /*CONFIG_IWLWIFI_DEBUGFS */ 2989e705c121SKalle Valo 29906983ba69SSara Sharon static u32 iwl_trans_pcie_get_cmdlen(struct iwl_trans *trans, void *tfd) 2991e705c121SKalle Valo { 2992e705c121SKalle Valo u32 cmdlen = 0; 2993e705c121SKalle Valo int i; 2994e705c121SKalle Valo 2995885375d0SMordechay Goodstein for (i = 0; i < trans->txqs.tfd.max_tbs; i++) 29966983ba69SSara Sharon cmdlen += iwl_pcie_tfd_tb_get_len(trans, tfd, i); 2997e705c121SKalle Valo 2998e705c121SKalle Valo return cmdlen; 2999e705c121SKalle Valo } 3000e705c121SKalle Valo 3001e705c121SKalle Valo static u32 iwl_trans_pcie_dump_rbs(struct iwl_trans *trans, 3002e705c121SKalle Valo struct iwl_fw_error_dump_data **data, 3003e705c121SKalle Valo int allocated_rb_nums) 3004e705c121SKalle Valo { 3005e705c121SKalle Valo struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); 300680084e35SJohannes Berg int max_len = trans_pcie->rx_buf_bytes; 300778485054SSara Sharon /* Dump RBs is supported only for pre-9000 devices (1 queue) */ 300878485054SSara Sharon struct iwl_rxq *rxq = &trans_pcie->rxq[0]; 3009e705c121SKalle Valo u32 i, r, j, rb_len = 0; 3010e705c121SKalle Valo 3011e705c121SKalle Valo spin_lock(&rxq->lock); 3012e705c121SKalle Valo 30130307c839SGolan Ben Ami r = le16_to_cpu(iwl_get_closed_rb_stts(trans, rxq)) & 0x0FFF; 3014e705c121SKalle Valo 3015e705c121SKalle Valo for (i = rxq->read, j = 0; 3016e705c121SKalle Valo i != r && j < allocated_rb_nums; 3017e705c121SKalle Valo i = (i + 1) & RX_QUEUE_MASK, j++) { 3018e705c121SKalle Valo struct iwl_rx_mem_buffer *rxb = rxq->queue[i]; 3019e705c121SKalle Valo struct iwl_fw_error_dump_rb *rb; 3020e705c121SKalle Valo 3021e705c121SKalle Valo dma_unmap_page(trans->dev, rxb->page_dma, max_len, 3022e705c121SKalle Valo DMA_FROM_DEVICE); 3023e705c121SKalle Valo 3024e705c121SKalle Valo rb_len += sizeof(**data) + sizeof(*rb) + max_len; 3025e705c121SKalle Valo 3026e705c121SKalle Valo (*data)->type = cpu_to_le32(IWL_FW_ERROR_DUMP_RB); 3027e705c121SKalle Valo (*data)->len = cpu_to_le32(sizeof(*rb) + max_len); 3028e705c121SKalle Valo rb = (void *)(*data)->data; 3029e705c121SKalle Valo rb->index = cpu_to_le32(i); 3030e705c121SKalle Valo memcpy(rb->data, page_address(rxb->page), max_len); 3031e705c121SKalle Valo /* remap the page for the free benefit */ 3032cfdc20efSJohannes Berg rxb->page_dma = dma_map_page(trans->dev, rxb->page, 3033cfdc20efSJohannes Berg rxb->offset, max_len, 3034e705c121SKalle Valo DMA_FROM_DEVICE); 3035e705c121SKalle Valo 3036e705c121SKalle Valo *data = iwl_fw_error_next_data(*data); 3037e705c121SKalle Valo } 3038e705c121SKalle Valo 3039e705c121SKalle Valo spin_unlock(&rxq->lock); 3040e705c121SKalle Valo 3041e705c121SKalle Valo return rb_len; 3042e705c121SKalle Valo } 3043e705c121SKalle Valo #define IWL_CSR_TO_DUMP (0x250) 3044e705c121SKalle Valo 3045e705c121SKalle Valo static u32 iwl_trans_pcie_dump_csr(struct iwl_trans *trans, 3046e705c121SKalle Valo struct iwl_fw_error_dump_data **data) 3047e705c121SKalle Valo { 3048e705c121SKalle Valo u32 csr_len = sizeof(**data) + IWL_CSR_TO_DUMP; 3049e705c121SKalle Valo __le32 *val; 3050e705c121SKalle Valo int i; 3051e705c121SKalle Valo 3052e705c121SKalle Valo (*data)->type = cpu_to_le32(IWL_FW_ERROR_DUMP_CSR); 3053e705c121SKalle Valo (*data)->len = cpu_to_le32(IWL_CSR_TO_DUMP); 3054e705c121SKalle Valo val = (void *)(*data)->data; 3055e705c121SKalle Valo 3056e705c121SKalle Valo for (i = 0; i < IWL_CSR_TO_DUMP; i += 4) 3057e705c121SKalle Valo *val++ = cpu_to_le32(iwl_trans_pcie_read32(trans, i)); 3058e705c121SKalle Valo 3059e705c121SKalle Valo *data = iwl_fw_error_next_data(*data); 3060e705c121SKalle Valo 3061e705c121SKalle Valo return csr_len; 3062e705c121SKalle Valo } 3063e705c121SKalle Valo 3064e705c121SKalle Valo static u32 iwl_trans_pcie_fh_regs_dump(struct iwl_trans *trans, 3065e705c121SKalle Valo struct iwl_fw_error_dump_data **data) 3066e705c121SKalle Valo { 3067e705c121SKalle Valo u32 fh_regs_len = FH_MEM_UPPER_BOUND - FH_MEM_LOWER_BOUND; 3068e705c121SKalle Valo unsigned long flags; 3069e705c121SKalle Valo __le32 *val; 3070e705c121SKalle Valo int i; 3071e705c121SKalle Valo 307223ba9340SEmmanuel Grumbach if (!iwl_trans_grab_nic_access(trans, &flags)) 3073e705c121SKalle Valo return 0; 3074e705c121SKalle Valo 3075e705c121SKalle Valo (*data)->type = cpu_to_le32(IWL_FW_ERROR_DUMP_FH_REGS); 3076e705c121SKalle Valo (*data)->len = cpu_to_le32(fh_regs_len); 3077e705c121SKalle Valo val = (void *)(*data)->data; 3078e705c121SKalle Valo 3079286ca8ebSLuca Coelho if (!trans->trans_cfg->gen2) 3080723b45e2SLiad Kaufman for (i = FH_MEM_LOWER_BOUND; i < FH_MEM_UPPER_BOUND; 3081723b45e2SLiad Kaufman i += sizeof(u32)) 3082e705c121SKalle Valo *val++ = cpu_to_le32(iwl_trans_pcie_read32(trans, i)); 3083723b45e2SLiad Kaufman else 3084ea695b7cSShaul Triebitz for (i = iwl_umac_prph(trans, FH_MEM_LOWER_BOUND_GEN2); 3085ea695b7cSShaul Triebitz i < iwl_umac_prph(trans, FH_MEM_UPPER_BOUND_GEN2); 3086723b45e2SLiad Kaufman i += sizeof(u32)) 3087723b45e2SLiad Kaufman *val++ = cpu_to_le32(iwl_trans_pcie_read_prph(trans, 3088723b45e2SLiad Kaufman i)); 3089e705c121SKalle Valo 3090e705c121SKalle Valo iwl_trans_release_nic_access(trans, &flags); 3091e705c121SKalle Valo 3092e705c121SKalle Valo *data = iwl_fw_error_next_data(*data); 3093e705c121SKalle Valo 3094e705c121SKalle Valo return sizeof(**data) + fh_regs_len; 3095e705c121SKalle Valo } 3096e705c121SKalle Valo 3097e705c121SKalle Valo static u32 3098e705c121SKalle Valo iwl_trans_pci_dump_marbh_monitor(struct iwl_trans *trans, 3099e705c121SKalle Valo struct iwl_fw_error_dump_fw_mon *fw_mon_data, 3100e705c121SKalle Valo u32 monitor_len) 3101e705c121SKalle Valo { 3102e705c121SKalle Valo u32 buf_size_in_dwords = (monitor_len >> 2); 3103e705c121SKalle Valo u32 *buffer = (u32 *)fw_mon_data->data; 3104e705c121SKalle Valo unsigned long flags; 3105e705c121SKalle Valo u32 i; 3106e705c121SKalle Valo 310723ba9340SEmmanuel Grumbach if (!iwl_trans_grab_nic_access(trans, &flags)) 3108e705c121SKalle Valo return 0; 3109e705c121SKalle Valo 3110ea695b7cSShaul Triebitz iwl_write_umac_prph_no_grab(trans, MON_DMARB_RD_CTL_ADDR, 0x1); 3111e705c121SKalle Valo for (i = 0; i < buf_size_in_dwords; i++) 3112ea695b7cSShaul Triebitz buffer[i] = iwl_read_umac_prph_no_grab(trans, 311314ef1b43SGolan Ben-Ami MON_DMARB_RD_DATA_ADDR); 3114ea695b7cSShaul Triebitz iwl_write_umac_prph_no_grab(trans, MON_DMARB_RD_CTL_ADDR, 0x0); 3115e705c121SKalle Valo 3116e705c121SKalle Valo iwl_trans_release_nic_access(trans, &flags); 3117e705c121SKalle Valo 3118e705c121SKalle Valo return monitor_len; 3119e705c121SKalle Valo } 3120e705c121SKalle Valo 31217a14c23dSSara Sharon static void 31227a14c23dSSara Sharon iwl_trans_pcie_dump_pointers(struct iwl_trans *trans, 31237a14c23dSSara Sharon struct iwl_fw_error_dump_fw_mon *fw_mon_data) 31247a14c23dSSara Sharon { 3125c88580e1SShahar S Matityahu u32 base, base_high, write_ptr, write_ptr_val, wrap_cnt; 31267a14c23dSSara Sharon 3127286ca8ebSLuca Coelho if (trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_AX210) { 3128c88580e1SShahar S Matityahu base = DBGC_CUR_DBGBUF_BASE_ADDR_LSB; 3129c88580e1SShahar S Matityahu base_high = DBGC_CUR_DBGBUF_BASE_ADDR_MSB; 3130c88580e1SShahar S Matityahu write_ptr = DBGC_CUR_DBGBUF_STATUS; 3131c88580e1SShahar S Matityahu wrap_cnt = DBGC_DBGBUF_WRAP_AROUND; 313291c28b83SShahar S Matityahu } else if (trans->dbg.dest_tlv) { 313391c28b83SShahar S Matityahu write_ptr = le32_to_cpu(trans->dbg.dest_tlv->write_ptr_reg); 313491c28b83SShahar S Matityahu wrap_cnt = le32_to_cpu(trans->dbg.dest_tlv->wrap_count); 313591c28b83SShahar S Matityahu base = le32_to_cpu(trans->dbg.dest_tlv->base_reg); 31367a14c23dSSara Sharon } else { 31377a14c23dSSara Sharon base = MON_BUFF_BASE_ADDR; 31387a14c23dSSara Sharon write_ptr = MON_BUFF_WRPTR; 31397a14c23dSSara Sharon wrap_cnt = MON_BUFF_CYCLE_CNT; 31407a14c23dSSara Sharon } 3141c88580e1SShahar S Matityahu 3142c88580e1SShahar S Matityahu write_ptr_val = iwl_read_prph(trans, write_ptr); 31437a14c23dSSara Sharon fw_mon_data->fw_mon_cycle_cnt = 31447a14c23dSSara Sharon cpu_to_le32(iwl_read_prph(trans, wrap_cnt)); 31457a14c23dSSara Sharon fw_mon_data->fw_mon_base_ptr = 31467a14c23dSSara Sharon cpu_to_le32(iwl_read_prph(trans, base)); 3147286ca8ebSLuca Coelho if (trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_AX210) { 3148c88580e1SShahar S Matityahu fw_mon_data->fw_mon_base_high_ptr = 3149c88580e1SShahar S Matityahu cpu_to_le32(iwl_read_prph(trans, base_high)); 3150c88580e1SShahar S Matityahu write_ptr_val &= DBGC_CUR_DBGBUF_STATUS_OFFSET_MSK; 3151c88580e1SShahar S Matityahu } 3152c88580e1SShahar S Matityahu fw_mon_data->fw_mon_wr_ptr = cpu_to_le32(write_ptr_val); 31537a14c23dSSara Sharon } 31547a14c23dSSara Sharon 3155e705c121SKalle Valo static u32 3156e705c121SKalle Valo iwl_trans_pcie_dump_monitor(struct iwl_trans *trans, 3157e705c121SKalle Valo struct iwl_fw_error_dump_data **data, 3158e705c121SKalle Valo u32 monitor_len) 3159e705c121SKalle Valo { 316069f0e505SShahar S Matityahu struct iwl_dram_data *fw_mon = &trans->dbg.fw_mon; 3161e705c121SKalle Valo u32 len = 0; 3162e705c121SKalle Valo 316391c28b83SShahar S Matityahu if (trans->dbg.dest_tlv || 316469f0e505SShahar S Matityahu (fw_mon->size && 3165286ca8ebSLuca Coelho (trans->trans_cfg->device_family == IWL_DEVICE_FAMILY_7000 || 3166286ca8ebSLuca Coelho trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_AX210))) { 3167e705c121SKalle Valo struct iwl_fw_error_dump_fw_mon *fw_mon_data; 3168e705c121SKalle Valo 3169e705c121SKalle Valo (*data)->type = cpu_to_le32(IWL_FW_ERROR_DUMP_FW_MONITOR); 3170e705c121SKalle Valo fw_mon_data = (void *)(*data)->data; 31717a14c23dSSara Sharon 31727a14c23dSSara Sharon iwl_trans_pcie_dump_pointers(trans, fw_mon_data); 3173e705c121SKalle Valo 3174e705c121SKalle Valo len += sizeof(**data) + sizeof(*fw_mon_data); 317569f0e505SShahar S Matityahu if (fw_mon->size) { 317669f0e505SShahar S Matityahu memcpy(fw_mon_data->data, fw_mon->block, fw_mon->size); 317769f0e505SShahar S Matityahu monitor_len = fw_mon->size; 317891c28b83SShahar S Matityahu } else if (trans->dbg.dest_tlv->monitor_mode == SMEM_MODE) { 31797a14c23dSSara Sharon u32 base = le32_to_cpu(fw_mon_data->fw_mon_base_ptr); 3180e705c121SKalle Valo /* 3181e705c121SKalle Valo * Update pointers to reflect actual values after 3182e705c121SKalle Valo * shifting 3183e705c121SKalle Valo */ 318491c28b83SShahar S Matityahu if (trans->dbg.dest_tlv->version) { 3185fd527eb5SGolan Ben Ami base = (iwl_read_prph(trans, base) & 3186fd527eb5SGolan Ben Ami IWL_LDBG_M2S_BUF_BA_MSK) << 318791c28b83SShahar S Matityahu trans->dbg.dest_tlv->base_shift; 3188fd527eb5SGolan Ben Ami base *= IWL_M2S_UNIT_SIZE; 3189fd527eb5SGolan Ben Ami base += trans->cfg->smem_offset; 3190fd527eb5SGolan Ben Ami } else { 3191e705c121SKalle Valo base = iwl_read_prph(trans, base) << 319291c28b83SShahar S Matityahu trans->dbg.dest_tlv->base_shift; 3193fd527eb5SGolan Ben Ami } 3194fd527eb5SGolan Ben Ami 3195e705c121SKalle Valo iwl_trans_read_mem(trans, base, fw_mon_data->data, 3196e705c121SKalle Valo monitor_len / sizeof(u32)); 319791c28b83SShahar S Matityahu } else if (trans->dbg.dest_tlv->monitor_mode == MARBH_MODE) { 3198e705c121SKalle Valo monitor_len = 3199e705c121SKalle Valo iwl_trans_pci_dump_marbh_monitor(trans, 3200e705c121SKalle Valo fw_mon_data, 3201e705c121SKalle Valo monitor_len); 3202e705c121SKalle Valo } else { 3203e705c121SKalle Valo /* Didn't match anything - output no monitor data */ 3204e705c121SKalle Valo monitor_len = 0; 3205e705c121SKalle Valo } 3206e705c121SKalle Valo 3207e705c121SKalle Valo len += monitor_len; 3208e705c121SKalle Valo (*data)->len = cpu_to_le32(monitor_len + sizeof(*fw_mon_data)); 3209e705c121SKalle Valo } 3210e705c121SKalle Valo 3211e705c121SKalle Valo return len; 3212e705c121SKalle Valo } 3213e705c121SKalle Valo 321493079fd5SJohannes Berg static int iwl_trans_get_fw_monitor_len(struct iwl_trans *trans, u32 *len) 3215e705c121SKalle Valo { 321669f0e505SShahar S Matityahu if (trans->dbg.fw_mon.size) { 3217da752717SShahar S Matityahu *len += sizeof(struct iwl_fw_error_dump_data) + 3218da752717SShahar S Matityahu sizeof(struct iwl_fw_error_dump_fw_mon) + 321969f0e505SShahar S Matityahu trans->dbg.fw_mon.size; 322069f0e505SShahar S Matityahu return trans->dbg.fw_mon.size; 322191c28b83SShahar S Matityahu } else if (trans->dbg.dest_tlv) { 3222da752717SShahar S Matityahu u32 base, end, cfg_reg, monitor_len; 3223e705c121SKalle Valo 322491c28b83SShahar S Matityahu if (trans->dbg.dest_tlv->version == 1) { 322591c28b83SShahar S Matityahu cfg_reg = le32_to_cpu(trans->dbg.dest_tlv->base_reg); 3226fd527eb5SGolan Ben Ami cfg_reg = iwl_read_prph(trans, cfg_reg); 3227fd527eb5SGolan Ben Ami base = (cfg_reg & IWL_LDBG_M2S_BUF_BA_MSK) << 322891c28b83SShahar S Matityahu trans->dbg.dest_tlv->base_shift; 3229fd527eb5SGolan Ben Ami base *= IWL_M2S_UNIT_SIZE; 3230fd527eb5SGolan Ben Ami base += trans->cfg->smem_offset; 3231fd527eb5SGolan Ben Ami 3232fd527eb5SGolan Ben Ami monitor_len = 3233fd527eb5SGolan Ben Ami (cfg_reg & IWL_LDBG_M2S_BUF_SIZE_MSK) >> 323491c28b83SShahar S Matityahu trans->dbg.dest_tlv->end_shift; 3235fd527eb5SGolan Ben Ami monitor_len *= IWL_M2S_UNIT_SIZE; 3236fd527eb5SGolan Ben Ami } else { 323791c28b83SShahar S Matityahu base = le32_to_cpu(trans->dbg.dest_tlv->base_reg); 323891c28b83SShahar S Matityahu end = le32_to_cpu(trans->dbg.dest_tlv->end_reg); 3239e705c121SKalle Valo 3240e705c121SKalle Valo base = iwl_read_prph(trans, base) << 324191c28b83SShahar S Matityahu trans->dbg.dest_tlv->base_shift; 3242e705c121SKalle Valo end = iwl_read_prph(trans, end) << 324391c28b83SShahar S Matityahu trans->dbg.dest_tlv->end_shift; 3244e705c121SKalle Valo 3245e705c121SKalle Valo /* Make "end" point to the actual end */ 3246286ca8ebSLuca Coelho if (trans->trans_cfg->device_family >= 3247fd527eb5SGolan Ben Ami IWL_DEVICE_FAMILY_8000 || 324891c28b83SShahar S Matityahu trans->dbg.dest_tlv->monitor_mode == MARBH_MODE) 324991c28b83SShahar S Matityahu end += (1 << trans->dbg.dest_tlv->end_shift); 3250e705c121SKalle Valo monitor_len = end - base; 3251fd527eb5SGolan Ben Ami } 3252da752717SShahar S Matityahu *len += sizeof(struct iwl_fw_error_dump_data) + 3253da752717SShahar S Matityahu sizeof(struct iwl_fw_error_dump_fw_mon) + 3254e705c121SKalle Valo monitor_len; 3255da752717SShahar S Matityahu return monitor_len; 3256e705c121SKalle Valo } 3257da752717SShahar S Matityahu return 0; 3258da752717SShahar S Matityahu } 3259da752717SShahar S Matityahu 3260da752717SShahar S Matityahu static struct iwl_trans_dump_data 3261da752717SShahar S Matityahu *iwl_trans_pcie_dump_data(struct iwl_trans *trans, 326279f033f6SSara Sharon u32 dump_mask) 3263da752717SShahar S Matityahu { 3264da752717SShahar S Matityahu struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); 3265da752717SShahar S Matityahu struct iwl_fw_error_dump_data *data; 32664f4822b7SMordechay Goodstein struct iwl_txq *cmdq = trans->txqs.txq[trans->txqs.cmd.q_id]; 3267da752717SShahar S Matityahu struct iwl_fw_error_dump_txcmd *txcmd; 3268da752717SShahar S Matityahu struct iwl_trans_dump_data *dump_data; 3269fefbf853SShahar S Matityahu u32 len, num_rbs = 0, monitor_len = 0; 3270da752717SShahar S Matityahu int i, ptr; 3271da752717SShahar S Matityahu bool dump_rbs = test_bit(STATUS_FW_ERROR, &trans->status) && 3272286ca8ebSLuca Coelho !trans->trans_cfg->mq_rx_supported && 327379f033f6SSara Sharon dump_mask & BIT(IWL_FW_ERROR_DUMP_RB); 327479f033f6SSara Sharon 327579f033f6SSara Sharon if (!dump_mask) 327679f033f6SSara Sharon return NULL; 3277da752717SShahar S Matityahu 3278da752717SShahar S Matityahu /* transport dump header */ 3279da752717SShahar S Matityahu len = sizeof(*dump_data); 3280da752717SShahar S Matityahu 3281da752717SShahar S Matityahu /* host commands */ 3282e4eee943SShahar S Matityahu if (dump_mask & BIT(IWL_FW_ERROR_DUMP_TXCMD) && cmdq) 3283da752717SShahar S Matityahu len += sizeof(*data) + 32848672aad3SShahar S Matityahu cmdq->n_window * (sizeof(*txcmd) + 32858672aad3SShahar S Matityahu TFD_MAX_PAYLOAD_SIZE); 3286da752717SShahar S Matityahu 3287da752717SShahar S Matityahu /* FW monitor */ 3288fefbf853SShahar S Matityahu if (dump_mask & BIT(IWL_FW_ERROR_DUMP_FW_MONITOR)) 3289da752717SShahar S Matityahu monitor_len = iwl_trans_get_fw_monitor_len(trans, &len); 3290e705c121SKalle Valo 3291e705c121SKalle Valo /* CSR registers */ 329279f033f6SSara Sharon if (dump_mask & BIT(IWL_FW_ERROR_DUMP_CSR)) 3293e705c121SKalle Valo len += sizeof(*data) + IWL_CSR_TO_DUMP; 3294e705c121SKalle Valo 3295e705c121SKalle Valo /* FH registers */ 329679f033f6SSara Sharon if (dump_mask & BIT(IWL_FW_ERROR_DUMP_FH_REGS)) { 3297286ca8ebSLuca Coelho if (trans->trans_cfg->gen2) 3298723b45e2SLiad Kaufman len += sizeof(*data) + 3299ea695b7cSShaul Triebitz (iwl_umac_prph(trans, FH_MEM_UPPER_BOUND_GEN2) - 3300ea695b7cSShaul Triebitz iwl_umac_prph(trans, FH_MEM_LOWER_BOUND_GEN2)); 3301723b45e2SLiad Kaufman else 3302723b45e2SLiad Kaufman len += sizeof(*data) + 3303520f03eaSShahar S Matityahu (FH_MEM_UPPER_BOUND - 3304520f03eaSShahar S Matityahu FH_MEM_LOWER_BOUND); 3305520f03eaSShahar S Matityahu } 3306e705c121SKalle Valo 3307e705c121SKalle Valo if (dump_rbs) { 330878485054SSara Sharon /* Dump RBs is supported only for pre-9000 devices (1 queue) */ 330978485054SSara Sharon struct iwl_rxq *rxq = &trans_pcie->rxq[0]; 3310e705c121SKalle Valo /* RBs */ 33110307c839SGolan Ben Ami num_rbs = 33120307c839SGolan Ben Ami le16_to_cpu(iwl_get_closed_rb_stts(trans, rxq)) 3313e705c121SKalle Valo & 0x0FFF; 331478485054SSara Sharon num_rbs = (num_rbs - rxq->read) & RX_QUEUE_MASK; 3315e705c121SKalle Valo len += num_rbs * (sizeof(*data) + 3316e705c121SKalle Valo sizeof(struct iwl_fw_error_dump_rb) + 3317e705c121SKalle Valo (PAGE_SIZE << trans_pcie->rx_page_order)); 3318e705c121SKalle Valo } 3319e705c121SKalle Valo 33205538409bSLiad Kaufman /* Paged memory for gen2 HW */ 3321286ca8ebSLuca Coelho if (trans->trans_cfg->gen2 && dump_mask & BIT(IWL_FW_ERROR_DUMP_PAGING)) 3322505a00c0SShahar S Matityahu for (i = 0; i < trans->init_dram.paging_cnt; i++) 33235538409bSLiad Kaufman len += sizeof(*data) + 33245538409bSLiad Kaufman sizeof(struct iwl_fw_error_dump_paging) + 3325505a00c0SShahar S Matityahu trans->init_dram.paging[i].size; 33265538409bSLiad Kaufman 3327e705c121SKalle Valo dump_data = vzalloc(len); 3328e705c121SKalle Valo if (!dump_data) 3329e705c121SKalle Valo return NULL; 3330e705c121SKalle Valo 3331e705c121SKalle Valo len = 0; 3332e705c121SKalle Valo data = (void *)dump_data->data; 3333520f03eaSShahar S Matityahu 3334e4eee943SShahar S Matityahu if (dump_mask & BIT(IWL_FW_ERROR_DUMP_TXCMD) && cmdq) { 3335885375d0SMordechay Goodstein u16 tfd_size = trans->txqs.tfd.size; 3336520f03eaSShahar S Matityahu 3337e705c121SKalle Valo data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_TXCMD); 3338e705c121SKalle Valo txcmd = (void *)data->data; 3339e705c121SKalle Valo spin_lock_bh(&cmdq->lock); 3340bb98ecd4SSara Sharon ptr = cmdq->write_ptr; 3341bb98ecd4SSara Sharon for (i = 0; i < cmdq->n_window; i++) { 33424ecab561SEmmanuel Grumbach u8 idx = iwl_pcie_get_cmd_index(cmdq, ptr); 334308326a97SJohannes Berg u8 tfdidx; 3344e705c121SKalle Valo u32 caplen, cmdlen; 3345e705c121SKalle Valo 334608326a97SJohannes Berg if (trans->trans_cfg->use_tfh) 334708326a97SJohannes Berg tfdidx = idx; 334808326a97SJohannes Berg else 334908326a97SJohannes Berg tfdidx = ptr; 335008326a97SJohannes Berg 3351520f03eaSShahar S Matityahu cmdlen = iwl_trans_pcie_get_cmdlen(trans, 335208326a97SJohannes Berg (u8 *)cmdq->tfds + 335308326a97SJohannes Berg tfd_size * tfdidx); 3354e705c121SKalle Valo caplen = min_t(u32, TFD_MAX_PAYLOAD_SIZE, cmdlen); 3355e705c121SKalle Valo 3356e705c121SKalle Valo if (cmdlen) { 3357e705c121SKalle Valo len += sizeof(*txcmd) + caplen; 3358e705c121SKalle Valo txcmd->cmdlen = cpu_to_le32(cmdlen); 3359e705c121SKalle Valo txcmd->caplen = cpu_to_le32(caplen); 3360520f03eaSShahar S Matityahu memcpy(txcmd->data, cmdq->entries[idx].cmd, 3361520f03eaSShahar S Matityahu caplen); 3362e705c121SKalle Valo txcmd = (void *)((u8 *)txcmd->data + caplen); 3363e705c121SKalle Valo } 3364e705c121SKalle Valo 33657b3e42eaSGolan Ben Ami ptr = iwl_queue_dec_wrap(trans, ptr); 3366e705c121SKalle Valo } 3367e705c121SKalle Valo spin_unlock_bh(&cmdq->lock); 3368e705c121SKalle Valo 3369e705c121SKalle Valo data->len = cpu_to_le32(len); 3370e705c121SKalle Valo len += sizeof(*data); 3371e705c121SKalle Valo data = iwl_fw_error_next_data(data); 3372520f03eaSShahar S Matityahu } 3373e705c121SKalle Valo 337479f033f6SSara Sharon if (dump_mask & BIT(IWL_FW_ERROR_DUMP_CSR)) 3375e705c121SKalle Valo len += iwl_trans_pcie_dump_csr(trans, &data); 337679f033f6SSara Sharon if (dump_mask & BIT(IWL_FW_ERROR_DUMP_FH_REGS)) 3377e705c121SKalle Valo len += iwl_trans_pcie_fh_regs_dump(trans, &data); 3378e705c121SKalle Valo if (dump_rbs) 3379e705c121SKalle Valo len += iwl_trans_pcie_dump_rbs(trans, &data, num_rbs); 3380e705c121SKalle Valo 33815538409bSLiad Kaufman /* Paged memory for gen2 HW */ 3382286ca8ebSLuca Coelho if (trans->trans_cfg->gen2 && 338379b6c8feSLuca Coelho dump_mask & BIT(IWL_FW_ERROR_DUMP_PAGING)) { 3384505a00c0SShahar S Matityahu for (i = 0; i < trans->init_dram.paging_cnt; i++) { 33855538409bSLiad Kaufman struct iwl_fw_error_dump_paging *paging; 3386505a00c0SShahar S Matityahu u32 page_len = trans->init_dram.paging[i].size; 33875538409bSLiad Kaufman 33885538409bSLiad Kaufman data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_PAGING); 33895538409bSLiad Kaufman data->len = cpu_to_le32(sizeof(*paging) + page_len); 33905538409bSLiad Kaufman paging = (void *)data->data; 33915538409bSLiad Kaufman paging->index = cpu_to_le32(i); 33925538409bSLiad Kaufman memcpy(paging->data, 3393505a00c0SShahar S Matityahu trans->init_dram.paging[i].block, page_len); 33945538409bSLiad Kaufman data = iwl_fw_error_next_data(data); 33955538409bSLiad Kaufman 33965538409bSLiad Kaufman len += sizeof(*data) + sizeof(*paging) + page_len; 33975538409bSLiad Kaufman } 33985538409bSLiad Kaufman } 339979f033f6SSara Sharon if (dump_mask & BIT(IWL_FW_ERROR_DUMP_FW_MONITOR)) 3400e705c121SKalle Valo len += iwl_trans_pcie_dump_monitor(trans, &data, monitor_len); 3401e705c121SKalle Valo 3402e705c121SKalle Valo dump_data->len = len; 3403e705c121SKalle Valo 3404e705c121SKalle Valo return dump_data; 3405e705c121SKalle Valo } 3406e705c121SKalle Valo 34074cbb8e50SLuciano Coelho #ifdef CONFIG_PM_SLEEP 34084cbb8e50SLuciano Coelho static int iwl_trans_pcie_suspend(struct iwl_trans *trans) 34094cbb8e50SLuciano Coelho { 34104cbb8e50SLuciano Coelho return 0; 34114cbb8e50SLuciano Coelho } 34124cbb8e50SLuciano Coelho 34134cbb8e50SLuciano Coelho static void iwl_trans_pcie_resume(struct iwl_trans *trans) 34144cbb8e50SLuciano Coelho { 34154cbb8e50SLuciano Coelho } 34164cbb8e50SLuciano Coelho #endif /* CONFIG_PM_SLEEP */ 34174cbb8e50SLuciano Coelho 3418623e7766SSara Sharon #define IWL_TRANS_COMMON_OPS \ 3419623e7766SSara Sharon .op_mode_leave = iwl_trans_pcie_op_mode_leave, \ 3420623e7766SSara Sharon .write8 = iwl_trans_pcie_write8, \ 3421623e7766SSara Sharon .write32 = iwl_trans_pcie_write32, \ 3422623e7766SSara Sharon .read32 = iwl_trans_pcie_read32, \ 3423623e7766SSara Sharon .read_prph = iwl_trans_pcie_read_prph, \ 3424623e7766SSara Sharon .write_prph = iwl_trans_pcie_write_prph, \ 3425623e7766SSara Sharon .read_mem = iwl_trans_pcie_read_mem, \ 3426623e7766SSara Sharon .write_mem = iwl_trans_pcie_write_mem, \ 34277f1fe1d4SLuca Coelho .read_config32 = iwl_trans_pcie_read_config32, \ 3428623e7766SSara Sharon .configure = iwl_trans_pcie_configure, \ 3429623e7766SSara Sharon .set_pmi = iwl_trans_pcie_set_pmi, \ 3430870c2a11SGolan Ben Ami .sw_reset = iwl_trans_pcie_sw_reset, \ 3431623e7766SSara Sharon .grab_nic_access = iwl_trans_pcie_grab_nic_access, \ 3432623e7766SSara Sharon .release_nic_access = iwl_trans_pcie_release_nic_access, \ 3433623e7766SSara Sharon .set_bits_mask = iwl_trans_pcie_set_bits_mask, \ 3434623e7766SSara Sharon .dump_data = iwl_trans_pcie_dump_data, \ 3435623e7766SSara Sharon .d3_suspend = iwl_trans_pcie_d3_suspend, \ 3436d1967ce6SShahar S Matityahu .d3_resume = iwl_trans_pcie_d3_resume, \ 3437d1967ce6SShahar S Matityahu .sync_nmi = iwl_trans_pcie_sync_nmi 3438623e7766SSara Sharon 3439623e7766SSara Sharon #ifdef CONFIG_PM_SLEEP 3440623e7766SSara Sharon #define IWL_TRANS_PM_OPS \ 3441623e7766SSara Sharon .suspend = iwl_trans_pcie_suspend, \ 3442623e7766SSara Sharon .resume = iwl_trans_pcie_resume, 3443623e7766SSara Sharon #else 3444623e7766SSara Sharon #define IWL_TRANS_PM_OPS 3445623e7766SSara Sharon #endif /* CONFIG_PM_SLEEP */ 3446623e7766SSara Sharon 3447e705c121SKalle Valo static const struct iwl_trans_ops trans_ops_pcie = { 3448623e7766SSara Sharon IWL_TRANS_COMMON_OPS, 3449623e7766SSara Sharon IWL_TRANS_PM_OPS 3450e705c121SKalle Valo .start_hw = iwl_trans_pcie_start_hw, 3451e705c121SKalle Valo .fw_alive = iwl_trans_pcie_fw_alive, 3452e705c121SKalle Valo .start_fw = iwl_trans_pcie_start_fw, 3453e705c121SKalle Valo .stop_device = iwl_trans_pcie_stop_device, 3454e705c121SKalle Valo 3455e705c121SKalle Valo .send_cmd = iwl_trans_pcie_send_hcmd, 3456e705c121SKalle Valo 3457e705c121SKalle Valo .tx = iwl_trans_pcie_tx, 3458e705c121SKalle Valo .reclaim = iwl_trans_pcie_reclaim, 3459e705c121SKalle Valo 3460e705c121SKalle Valo .txq_disable = iwl_trans_pcie_txq_disable, 3461e705c121SKalle Valo .txq_enable = iwl_trans_pcie_txq_enable, 3462e705c121SKalle Valo 346342db09c1SLiad Kaufman .txq_set_shared_mode = iwl_trans_pcie_txq_set_shared_mode, 346442db09c1SLiad Kaufman 3465d6d517b7SSara Sharon .wait_tx_queues_empty = iwl_trans_pcie_wait_txqs_empty, 3466d6d517b7SSara Sharon 3467e705c121SKalle Valo .freeze_txq_timer = iwl_trans_pcie_freeze_txq_timer, 34680cd58eaaSEmmanuel Grumbach .block_txq_ptrs = iwl_trans_pcie_block_txq_ptrs, 3469f7805b33SLior Cohen #ifdef CONFIG_IWLWIFI_DEBUGFS 3470f7805b33SLior Cohen .debugfs_cleanup = iwl_trans_pcie_debugfs_cleanup, 3471f7805b33SLior Cohen #endif 3472623e7766SSara Sharon }; 3473e705c121SKalle Valo 3474623e7766SSara Sharon static const struct iwl_trans_ops trans_ops_pcie_gen2 = { 3475623e7766SSara Sharon IWL_TRANS_COMMON_OPS, 3476623e7766SSara Sharon IWL_TRANS_PM_OPS 3477623e7766SSara Sharon .start_hw = iwl_trans_pcie_start_hw, 3478eda50cdeSSara Sharon .fw_alive = iwl_trans_pcie_gen2_fw_alive, 3479eda50cdeSSara Sharon .start_fw = iwl_trans_pcie_gen2_start_fw, 348077c09bc8SSara Sharon .stop_device = iwl_trans_pcie_gen2_stop_device, 3481e705c121SKalle Valo 3482ca60da2eSSara Sharon .send_cmd = iwl_trans_pcie_gen2_send_hcmd, 3483e705c121SKalle Valo 3484ab6c6445SSara Sharon .tx = iwl_trans_pcie_gen2_tx, 3485623e7766SSara Sharon .reclaim = iwl_trans_pcie_reclaim, 3486623e7766SSara Sharon 3487ba7136f3SAlex Malamud .set_q_ptrs = iwl_trans_pcie_set_q_ptrs, 3488ba7136f3SAlex Malamud 34896b35ff91SSara Sharon .txq_alloc = iwl_trans_pcie_dyn_txq_alloc, 34906b35ff91SSara Sharon .txq_free = iwl_trans_pcie_dyn_txq_free, 3491d6d517b7SSara Sharon .wait_txq_empty = iwl_trans_pcie_wait_txq_empty, 349292536c96SSara Sharon .rxq_dma_data = iwl_trans_pcie_rxq_dma_data, 3493f7805b33SLior Cohen #ifdef CONFIG_IWLWIFI_DEBUGFS 3494f7805b33SLior Cohen .debugfs_cleanup = iwl_trans_pcie_debugfs_cleanup, 3495f7805b33SLior Cohen #endif 3496e705c121SKalle Valo }; 3497e705c121SKalle Valo 3498e705c121SKalle Valo struct iwl_trans *iwl_trans_pcie_alloc(struct pci_dev *pdev, 3499e705c121SKalle Valo const struct pci_device_id *ent, 35007e8258c0SLuca Coelho const struct iwl_cfg_trans_params *cfg_trans) 3501e705c121SKalle Valo { 3502e705c121SKalle Valo struct iwl_trans_pcie *trans_pcie; 3503e705c121SKalle Valo struct iwl_trans *trans; 3504fda1bd0dSMordechay Goodstein int ret, addr_size; 3505a89c72ffSJohannes Berg const struct iwl_trans_ops *ops = &trans_ops_pcie_gen2; 3506a89c72ffSJohannes Berg 3507fda1bd0dSMordechay Goodstein if (!cfg_trans->gen2) 3508a89c72ffSJohannes Berg ops = &trans_ops_pcie; 3509e705c121SKalle Valo 35105a41a86cSSharon Dvir ret = pcim_enable_device(pdev); 35115a41a86cSSharon Dvir if (ret) 35125a41a86cSSharon Dvir return ERR_PTR(ret); 35135a41a86cSSharon Dvir 3514a89c72ffSJohannes Berg trans = iwl_trans_alloc(sizeof(struct iwl_trans_pcie), &pdev->dev, ops, 3515fda1bd0dSMordechay Goodstein cfg_trans); 3516e705c121SKalle Valo if (!trans) 3517e705c121SKalle Valo return ERR_PTR(-ENOMEM); 3518e705c121SKalle Valo 3519e705c121SKalle Valo trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); 3520e705c121SKalle Valo 3521e705c121SKalle Valo trans_pcie->trans = trans; 3522326477e4SJohannes Berg trans_pcie->opmode_down = true; 3523e705c121SKalle Valo spin_lock_init(&trans_pcie->irq_lock); 3524e705c121SKalle Valo spin_lock_init(&trans_pcie->reg_lock); 3525cfdc20efSJohannes Berg spin_lock_init(&trans_pcie->alloc_page_lock); 3526e705c121SKalle Valo mutex_init(&trans_pcie->mutex); 3527e705c121SKalle Valo init_waitqueue_head(&trans_pcie->ucode_write_waitq); 35288188a18eSJohannes Berg 35298188a18eSJohannes Berg trans_pcie->rba.alloc_wq = alloc_workqueue("rb_allocator", 35308188a18eSJohannes Berg WQ_HIGHPRI | WQ_UNBOUND, 1); 35318188a18eSJohannes Berg if (!trans_pcie->rba.alloc_wq) { 35328188a18eSJohannes Berg ret = -ENOMEM; 35338188a18eSJohannes Berg goto out_free_trans; 35348188a18eSJohannes Berg } 35358188a18eSJohannes Berg INIT_WORK(&trans_pcie->rba.rx_alloc, iwl_pcie_rx_allocator_work); 35368188a18eSJohannes Berg 35376eb5e529SEmmanuel Grumbach trans_pcie->tso_hdr_page = alloc_percpu(struct iwl_tso_hdr_page); 35386eb5e529SEmmanuel Grumbach if (!trans_pcie->tso_hdr_page) { 35396eb5e529SEmmanuel Grumbach ret = -ENOMEM; 35406eb5e529SEmmanuel Grumbach goto out_no_pci; 35416eb5e529SEmmanuel Grumbach } 3542c5bf4fa1SJohannes Berg trans_pcie->debug_rfkill = -1; 3543e705c121SKalle Valo 35447e8258c0SLuca Coelho if (!cfg_trans->base_params->pcie_l1_allowed) { 3545e705c121SKalle Valo /* 3546e705c121SKalle Valo * W/A - seems to solve weird behavior. We need to remove this 3547e705c121SKalle Valo * if we don't want to stay in L1 all the time. This wastes a 3548e705c121SKalle Valo * lot of power. 3549e705c121SKalle Valo */ 3550e705c121SKalle Valo pci_disable_link_state(pdev, PCIE_LINK_STATE_L0S | 3551e705c121SKalle Valo PCIE_LINK_STATE_L1 | 3552e705c121SKalle Valo PCIE_LINK_STATE_CLKPM); 3553e705c121SKalle Valo } 3554e705c121SKalle Valo 35559416560eSGolan Ben Ami trans_pcie->def_rx_queue = 0; 35569416560eSGolan Ben Ami 3557e705c121SKalle Valo pci_set_master(pdev); 3558e705c121SKalle Valo 3559885375d0SMordechay Goodstein addr_size = trans->txqs.tfd.addr_size; 356096a6497bSSara Sharon ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(addr_size)); 3561e705c121SKalle Valo if (!ret) 356296a6497bSSara Sharon ret = pci_set_consistent_dma_mask(pdev, 356396a6497bSSara Sharon DMA_BIT_MASK(addr_size)); 3564e705c121SKalle Valo if (ret) { 3565e705c121SKalle Valo ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); 3566e705c121SKalle Valo if (!ret) 3567e705c121SKalle Valo ret = pci_set_consistent_dma_mask(pdev, 3568e705c121SKalle Valo DMA_BIT_MASK(32)); 3569e705c121SKalle Valo /* both attempts failed: */ 3570e705c121SKalle Valo if (ret) { 3571e705c121SKalle Valo dev_err(&pdev->dev, "No suitable DMA available\n"); 35725a41a86cSSharon Dvir goto out_no_pci; 3573e705c121SKalle Valo } 3574e705c121SKalle Valo } 3575e705c121SKalle Valo 35765a41a86cSSharon Dvir ret = pcim_iomap_regions_request_all(pdev, BIT(0), DRV_NAME); 3577e705c121SKalle Valo if (ret) { 35785a41a86cSSharon Dvir dev_err(&pdev->dev, "pcim_iomap_regions_request_all failed\n"); 35795a41a86cSSharon Dvir goto out_no_pci; 3580e705c121SKalle Valo } 3581e705c121SKalle Valo 35825a41a86cSSharon Dvir trans_pcie->hw_base = pcim_iomap_table(pdev)[0]; 3583e705c121SKalle Valo if (!trans_pcie->hw_base) { 35845a41a86cSSharon Dvir dev_err(&pdev->dev, "pcim_iomap_table failed\n"); 3585e705c121SKalle Valo ret = -ENODEV; 35865a41a86cSSharon Dvir goto out_no_pci; 3587e705c121SKalle Valo } 3588e705c121SKalle Valo 3589e705c121SKalle Valo /* We disable the RETRY_TIMEOUT register (0x41) to keep 3590e705c121SKalle Valo * PCI Tx retries from interfering with C3 CPU state */ 3591e705c121SKalle Valo pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00); 3592e705c121SKalle Valo 3593e705c121SKalle Valo trans_pcie->pci_dev = pdev; 3594e705c121SKalle Valo iwl_disable_interrupts(trans); 3595e705c121SKalle Valo 3596e705c121SKalle Valo trans->hw_rev = iwl_read32(trans, CSR_HW_REV); 35979a098a89SRajat Jain if (trans->hw_rev == 0xffffffff) { 35989a098a89SRajat Jain dev_err(&pdev->dev, "HW_REV=0xFFFFFFFF, PCI issues?\n"); 35999a098a89SRajat Jain ret = -EIO; 36009a098a89SRajat Jain goto out_no_pci; 36019a098a89SRajat Jain } 36029a098a89SRajat Jain 3603e705c121SKalle Valo /* 3604e705c121SKalle Valo * In the 8000 HW family the format of the 4 bytes of CSR_HW_REV have 3605e705c121SKalle Valo * changed, and now the revision step also includes bit 0-1 (no more 3606e705c121SKalle Valo * "dash" value). To keep hw_rev backwards compatible - we'll store it 3607e705c121SKalle Valo * in the old format. 3608e705c121SKalle Valo */ 36097e8258c0SLuca Coelho if (cfg_trans->device_family >= IWL_DEVICE_FAMILY_8000) { 3610e705c121SKalle Valo trans->hw_rev = (trans->hw_rev & 0xfff0) | 3611e705c121SKalle Valo (CSR_HW_REV_STEP(trans->hw_rev << 2) << 2); 3612e705c121SKalle Valo 3613e705c121SKalle Valo ret = iwl_pcie_prepare_card_hw(trans); 3614e705c121SKalle Valo if (ret) { 3615e705c121SKalle Valo IWL_WARN(trans, "Exit HW not ready\n"); 36165a41a86cSSharon Dvir goto out_no_pci; 3617e705c121SKalle Valo } 3618e705c121SKalle Valo 3619e705c121SKalle Valo /* 3620e705c121SKalle Valo * in-order to recognize C step driver should read chip version 3621e705c121SKalle Valo * id located at the AUX bus MISC address space. 3622e705c121SKalle Valo */ 36237e8258c0SLuca Coelho ret = iwl_finish_nic_init(trans, cfg_trans); 3624c96b5eecSJohannes Berg if (ret) 36255a41a86cSSharon Dvir goto out_no_pci; 3626e705c121SKalle Valo 3627e705c121SKalle Valo } 3628e705c121SKalle Valo 362999be6166SLuca Coelho IWL_DEBUG_INFO(trans, "HW REV: 0x%0x\n", trans->hw_rev); 363099be6166SLuca Coelho 36317e8258c0SLuca Coelho iwl_pcie_set_interrupt_capa(pdev, trans, cfg_trans); 3632e705c121SKalle Valo trans->hw_id = (pdev->device << 16) + pdev->subsystem_device; 3633e705c121SKalle Valo snprintf(trans->hw_id_str, sizeof(trans->hw_id_str), 3634e705c121SKalle Valo "PCI ID: 0x%04X:0x%04X", pdev->device, pdev->subsystem_device); 3635e705c121SKalle Valo 3636e705c121SKalle Valo /* Initialize the wait queue for commands */ 3637e705c121SKalle Valo init_waitqueue_head(&trans_pcie->wait_command_queue); 3638e705c121SKalle Valo 3639e5f3f215SHaim Dreyfuss init_waitqueue_head(&trans_pcie->sx_waitq); 3640e5f3f215SHaim Dreyfuss 3641c239feecSJohannes Berg 36422e5d4a8fSHaim Dreyfuss if (trans_pcie->msix_enabled) { 36432388bd7bSDan Carpenter ret = iwl_pcie_init_msix_handler(pdev, trans_pcie); 36442388bd7bSDan Carpenter if (ret) 36455a41a86cSSharon Dvir goto out_no_pci; 36462e5d4a8fSHaim Dreyfuss } else { 3647e705c121SKalle Valo ret = iwl_pcie_alloc_ict(trans); 3648e705c121SKalle Valo if (ret) 36495a41a86cSSharon Dvir goto out_no_pci; 3650e705c121SKalle Valo 36515a41a86cSSharon Dvir ret = devm_request_threaded_irq(&pdev->dev, pdev->irq, 36525a41a86cSSharon Dvir iwl_pcie_isr, 3653e705c121SKalle Valo iwl_pcie_irq_handler, 3654e705c121SKalle Valo IRQF_SHARED, DRV_NAME, trans); 3655e705c121SKalle Valo if (ret) { 3656e705c121SKalle Valo IWL_ERR(trans, "Error allocating IRQ %d\n", pdev->irq); 3657e705c121SKalle Valo goto out_free_ict; 3658e705c121SKalle Valo } 3659e705c121SKalle Valo trans_pcie->inta_mask = CSR_INI_SET_MASK; 36602e5d4a8fSHaim Dreyfuss } 3661e705c121SKalle Valo 3662f7805b33SLior Cohen #ifdef CONFIG_IWLWIFI_DEBUGFS 3663f7805b33SLior Cohen trans_pcie->fw_mon_data.state = IWL_FW_MON_DBGFS_STATE_CLOSED; 3664f7805b33SLior Cohen mutex_init(&trans_pcie->fw_mon_data.mutex); 3665f7805b33SLior Cohen #endif 3666f7805b33SLior Cohen 3667a9248de4SShahar S Matityahu iwl_dbg_tlv_init(trans); 3668a9248de4SShahar S Matityahu 3669e705c121SKalle Valo return trans; 3670e705c121SKalle Valo 3671e705c121SKalle Valo out_free_ict: 3672e705c121SKalle Valo iwl_pcie_free_ict(trans); 3673e705c121SKalle Valo out_no_pci: 36746eb5e529SEmmanuel Grumbach free_percpu(trans_pcie->tso_hdr_page); 36758188a18eSJohannes Berg destroy_workqueue(trans_pcie->rba.alloc_wq); 36768188a18eSJohannes Berg out_free_trans: 3677e705c121SKalle Valo iwl_trans_free(trans); 3678e705c121SKalle Valo return ERR_PTR(ret); 3679e705c121SKalle Valo } 3680b8a7547dSShahar S Matityahu 3681d1967ce6SShahar S Matityahu void iwl_trans_pcie_sync_nmi(struct iwl_trans *trans) 3682b8a7547dSShahar S Matityahu { 36831c6bca6dSShahar S Matityahu struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); 3684b8a7547dSShahar S Matityahu unsigned long timeout = jiffies + IWL_TRANS_NMI_TIMEOUT; 3685e4eee943SShahar S Matityahu bool interrupts_enabled = test_bit(STATUS_INT_ENABLED, &trans->status); 36861c6bca6dSShahar S Matityahu u32 inta_addr, sw_err_bit; 36871c6bca6dSShahar S Matityahu 36881c6bca6dSShahar S Matityahu if (trans_pcie->msix_enabled) { 36891c6bca6dSShahar S Matityahu inta_addr = CSR_MSIX_HW_INT_CAUSES_AD; 36901c6bca6dSShahar S Matityahu sw_err_bit = MSIX_HW_INT_CAUSES_REG_SW_ERR; 36911c6bca6dSShahar S Matityahu } else { 36921c6bca6dSShahar S Matityahu inta_addr = CSR_INT; 36931c6bca6dSShahar S Matityahu sw_err_bit = CSR_INT_BIT_SW_ERR; 36941c6bca6dSShahar S Matityahu } 3695b8a7547dSShahar S Matityahu 3696e4eee943SShahar S Matityahu /* if the interrupts were already disabled, there is no point in 3697e4eee943SShahar S Matityahu * calling iwl_disable_interrupts 3698e4eee943SShahar S Matityahu */ 3699e4eee943SShahar S Matityahu if (interrupts_enabled) 3700b8a7547dSShahar S Matityahu iwl_disable_interrupts(trans); 3701e4eee943SShahar S Matityahu 3702b8a7547dSShahar S Matityahu iwl_force_nmi(trans); 3703b8a7547dSShahar S Matityahu while (time_after(timeout, jiffies)) { 37041c6bca6dSShahar S Matityahu u32 inta_hw = iwl_read32(trans, inta_addr); 3705b8a7547dSShahar S Matityahu 3706b8a7547dSShahar S Matityahu /* Error detected by uCode */ 37071c6bca6dSShahar S Matityahu if (inta_hw & sw_err_bit) { 3708b8a7547dSShahar S Matityahu /* Clear causes register */ 37091c6bca6dSShahar S Matityahu iwl_write32(trans, inta_addr, inta_hw & sw_err_bit); 3710b8a7547dSShahar S Matityahu break; 3711b8a7547dSShahar S Matityahu } 3712b8a7547dSShahar S Matityahu 3713b8a7547dSShahar S Matityahu mdelay(1); 3714b8a7547dSShahar S Matityahu } 3715e4eee943SShahar S Matityahu 3716e4eee943SShahar S Matityahu /* enable interrupts only if there were already enabled before this 3717e4eee943SShahar S Matityahu * function to avoid a case were the driver enable interrupts before 3718e4eee943SShahar S Matityahu * proper configurations were made 3719e4eee943SShahar S Matityahu */ 3720e4eee943SShahar S Matityahu if (interrupts_enabled) 3721b8a7547dSShahar S Matityahu iwl_enable_interrupts(trans); 3722e4eee943SShahar S Matityahu 3723b8a7547dSShahar S Matityahu iwl_trans_fw_error(trans); 3724b8a7547dSShahar S Matityahu } 3725