1e705c121SKalle Valo /****************************************************************************** 2e705c121SKalle Valo * 3e705c121SKalle Valo * Copyright(c) 2003 - 2014 Intel Corporation. All rights reserved. 414ef1b43SGolan Ben-Ami * Copyright(c) 2015 Intel Deutschland GmbH 5e705c121SKalle Valo * 6e705c121SKalle Valo * Portions of this file are derived from the ipw3945 project. 7e705c121SKalle Valo * 8e705c121SKalle Valo * This program is free software; you can redistribute it and/or modify it 9e705c121SKalle Valo * under the terms of version 2 of the GNU General Public License as 10e705c121SKalle Valo * published by the Free Software Foundation. 11e705c121SKalle Valo * 12e705c121SKalle Valo * This program is distributed in the hope that it will be useful, but WITHOUT 13e705c121SKalle Valo * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 14e705c121SKalle Valo * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 15e705c121SKalle Valo * more details. 16e705c121SKalle Valo * 17e705c121SKalle Valo * You should have received a copy of the GNU General Public License along with 18e705c121SKalle Valo * this program; if not, write to the Free Software Foundation, Inc., 19e705c121SKalle Valo * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA 20e705c121SKalle Valo * 21e705c121SKalle Valo * The full GNU General Public License is included in this distribution in the 22e705c121SKalle Valo * file called LICENSE. 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 *****************************************************************************/ 29e705c121SKalle Valo #include <linux/delay.h> 30e705c121SKalle Valo #include <linux/device.h> 31e705c121SKalle Valo #include <linux/export.h> 32e705c121SKalle Valo 33e705c121SKalle Valo #include "iwl-drv.h" 34e705c121SKalle Valo #include "iwl-io.h" 35e705c121SKalle Valo #include "iwl-csr.h" 36e705c121SKalle Valo #include "iwl-debug.h" 37e705c121SKalle Valo #include "iwl-prph.h" 38e705c121SKalle Valo #include "iwl-fh.h" 39e705c121SKalle Valo 40e705c121SKalle Valo void iwl_write8(struct iwl_trans *trans, u32 ofs, u8 val) 41e705c121SKalle Valo { 42e705c121SKalle Valo trace_iwlwifi_dev_iowrite8(trans->dev, ofs, val); 43e705c121SKalle Valo iwl_trans_write8(trans, ofs, val); 44e705c121SKalle Valo } 45e705c121SKalle Valo IWL_EXPORT_SYMBOL(iwl_write8); 46e705c121SKalle Valo 47e705c121SKalle Valo void iwl_write32(struct iwl_trans *trans, u32 ofs, u32 val) 48e705c121SKalle Valo { 49e705c121SKalle Valo trace_iwlwifi_dev_iowrite32(trans->dev, ofs, val); 50e705c121SKalle Valo iwl_trans_write32(trans, ofs, val); 51e705c121SKalle Valo } 52e705c121SKalle Valo IWL_EXPORT_SYMBOL(iwl_write32); 53e705c121SKalle Valo 54e705c121SKalle Valo u32 iwl_read32(struct iwl_trans *trans, u32 ofs) 55e705c121SKalle Valo { 56e705c121SKalle Valo u32 val = iwl_trans_read32(trans, ofs); 57e705c121SKalle Valo 58e705c121SKalle Valo trace_iwlwifi_dev_ioread32(trans->dev, ofs, val); 59e705c121SKalle Valo return val; 60e705c121SKalle Valo } 61e705c121SKalle Valo IWL_EXPORT_SYMBOL(iwl_read32); 62e705c121SKalle Valo 63e705c121SKalle Valo #define IWL_POLL_INTERVAL 10 /* microseconds */ 64e705c121SKalle Valo 65e705c121SKalle Valo int iwl_poll_bit(struct iwl_trans *trans, u32 addr, 66e705c121SKalle Valo u32 bits, u32 mask, int timeout) 67e705c121SKalle Valo { 68e705c121SKalle Valo int t = 0; 69e705c121SKalle Valo 70e705c121SKalle Valo do { 71e705c121SKalle Valo if ((iwl_read32(trans, addr) & mask) == (bits & mask)) 72e705c121SKalle Valo return t; 73e705c121SKalle Valo udelay(IWL_POLL_INTERVAL); 74e705c121SKalle Valo t += IWL_POLL_INTERVAL; 75e705c121SKalle Valo } while (t < timeout); 76e705c121SKalle Valo 77e705c121SKalle Valo return -ETIMEDOUT; 78e705c121SKalle Valo } 79e705c121SKalle Valo IWL_EXPORT_SYMBOL(iwl_poll_bit); 80e705c121SKalle Valo 81e705c121SKalle Valo u32 iwl_read_direct32(struct iwl_trans *trans, u32 reg) 82e705c121SKalle Valo { 83e705c121SKalle Valo u32 value = 0x5a5a5a5a; 84e705c121SKalle Valo unsigned long flags; 8523ba9340SEmmanuel Grumbach if (iwl_trans_grab_nic_access(trans, &flags)) { 86e705c121SKalle Valo value = iwl_read32(trans, reg); 87e705c121SKalle Valo iwl_trans_release_nic_access(trans, &flags); 88e705c121SKalle Valo } 89e705c121SKalle Valo 90e705c121SKalle Valo return value; 91e705c121SKalle Valo } 92e705c121SKalle Valo IWL_EXPORT_SYMBOL(iwl_read_direct32); 93e705c121SKalle Valo 94e705c121SKalle Valo void iwl_write_direct32(struct iwl_trans *trans, u32 reg, u32 value) 95e705c121SKalle Valo { 96e705c121SKalle Valo unsigned long flags; 97e705c121SKalle Valo 9823ba9340SEmmanuel Grumbach if (iwl_trans_grab_nic_access(trans, &flags)) { 99e705c121SKalle Valo iwl_write32(trans, reg, value); 100e705c121SKalle Valo iwl_trans_release_nic_access(trans, &flags); 101e705c121SKalle Valo } 102e705c121SKalle Valo } 103e705c121SKalle Valo IWL_EXPORT_SYMBOL(iwl_write_direct32); 104e705c121SKalle Valo 105e705c121SKalle Valo int iwl_poll_direct_bit(struct iwl_trans *trans, u32 addr, u32 mask, 106e705c121SKalle Valo int timeout) 107e705c121SKalle Valo { 108e705c121SKalle Valo int t = 0; 109e705c121SKalle Valo 110e705c121SKalle Valo do { 111e705c121SKalle Valo if ((iwl_read_direct32(trans, addr) & mask) == mask) 112e705c121SKalle Valo return t; 113e705c121SKalle Valo udelay(IWL_POLL_INTERVAL); 114e705c121SKalle Valo t += IWL_POLL_INTERVAL; 115e705c121SKalle Valo } while (t < timeout); 116e705c121SKalle Valo 117e705c121SKalle Valo return -ETIMEDOUT; 118e705c121SKalle Valo } 119e705c121SKalle Valo IWL_EXPORT_SYMBOL(iwl_poll_direct_bit); 120e705c121SKalle Valo 12114ef1b43SGolan Ben-Ami u32 iwl_read_prph_no_grab(struct iwl_trans *trans, u32 ofs) 122e705c121SKalle Valo { 123e705c121SKalle Valo u32 val = iwl_trans_read_prph(trans, ofs); 124e705c121SKalle Valo trace_iwlwifi_dev_ioread_prph32(trans->dev, ofs, val); 125e705c121SKalle Valo return val; 126e705c121SKalle Valo } 12714ef1b43SGolan Ben-Ami IWL_EXPORT_SYMBOL(iwl_read_prph_no_grab); 128e705c121SKalle Valo 12914ef1b43SGolan Ben-Ami void iwl_write_prph_no_grab(struct iwl_trans *trans, u32 ofs, u32 val) 130e705c121SKalle Valo { 131e705c121SKalle Valo trace_iwlwifi_dev_iowrite_prph32(trans->dev, ofs, val); 132e705c121SKalle Valo iwl_trans_write_prph(trans, ofs, val); 133e705c121SKalle Valo } 13414ef1b43SGolan Ben-Ami IWL_EXPORT_SYMBOL(iwl_write_prph_no_grab); 135e705c121SKalle Valo 136e705c121SKalle Valo u32 iwl_read_prph(struct iwl_trans *trans, u32 ofs) 137e705c121SKalle Valo { 138e705c121SKalle Valo unsigned long flags; 139e705c121SKalle Valo u32 val = 0x5a5a5a5a; 140e705c121SKalle Valo 14123ba9340SEmmanuel Grumbach if (iwl_trans_grab_nic_access(trans, &flags)) { 14214ef1b43SGolan Ben-Ami val = iwl_read_prph_no_grab(trans, ofs); 143e705c121SKalle Valo iwl_trans_release_nic_access(trans, &flags); 144e705c121SKalle Valo } 145e705c121SKalle Valo return val; 146e705c121SKalle Valo } 147e705c121SKalle Valo IWL_EXPORT_SYMBOL(iwl_read_prph); 148e705c121SKalle Valo 149e705c121SKalle Valo void iwl_write_prph(struct iwl_trans *trans, u32 ofs, u32 val) 150e705c121SKalle Valo { 151e705c121SKalle Valo unsigned long flags; 152e705c121SKalle Valo 15323ba9340SEmmanuel Grumbach if (iwl_trans_grab_nic_access(trans, &flags)) { 15414ef1b43SGolan Ben-Ami iwl_write_prph_no_grab(trans, ofs, val); 155e705c121SKalle Valo iwl_trans_release_nic_access(trans, &flags); 156e705c121SKalle Valo } 157e705c121SKalle Valo } 158e705c121SKalle Valo IWL_EXPORT_SYMBOL(iwl_write_prph); 159e705c121SKalle Valo 160e705c121SKalle Valo int iwl_poll_prph_bit(struct iwl_trans *trans, u32 addr, 161e705c121SKalle Valo u32 bits, u32 mask, int timeout) 162e705c121SKalle Valo { 163e705c121SKalle Valo int t = 0; 164e705c121SKalle Valo 165e705c121SKalle Valo do { 166e705c121SKalle Valo if ((iwl_read_prph(trans, addr) & mask) == (bits & mask)) 167e705c121SKalle Valo return t; 168e705c121SKalle Valo udelay(IWL_POLL_INTERVAL); 169e705c121SKalle Valo t += IWL_POLL_INTERVAL; 170e705c121SKalle Valo } while (t < timeout); 171e705c121SKalle Valo 172e705c121SKalle Valo return -ETIMEDOUT; 173e705c121SKalle Valo } 174e705c121SKalle Valo 175e705c121SKalle Valo void iwl_set_bits_prph(struct iwl_trans *trans, u32 ofs, u32 mask) 176e705c121SKalle Valo { 177e705c121SKalle Valo unsigned long flags; 178e705c121SKalle Valo 17923ba9340SEmmanuel Grumbach if (iwl_trans_grab_nic_access(trans, &flags)) { 18014ef1b43SGolan Ben-Ami iwl_write_prph_no_grab(trans, ofs, 18114ef1b43SGolan Ben-Ami iwl_read_prph_no_grab(trans, ofs) | 18214ef1b43SGolan Ben-Ami mask); 183e705c121SKalle Valo iwl_trans_release_nic_access(trans, &flags); 184e705c121SKalle Valo } 185e705c121SKalle Valo } 186e705c121SKalle Valo IWL_EXPORT_SYMBOL(iwl_set_bits_prph); 187e705c121SKalle Valo 188e705c121SKalle Valo void iwl_set_bits_mask_prph(struct iwl_trans *trans, u32 ofs, 189e705c121SKalle Valo u32 bits, u32 mask) 190e705c121SKalle Valo { 191e705c121SKalle Valo unsigned long flags; 192e705c121SKalle Valo 19323ba9340SEmmanuel Grumbach if (iwl_trans_grab_nic_access(trans, &flags)) { 19414ef1b43SGolan Ben-Ami iwl_write_prph_no_grab(trans, ofs, 19514ef1b43SGolan Ben-Ami (iwl_read_prph_no_grab(trans, ofs) & 19614ef1b43SGolan Ben-Ami mask) | bits); 197e705c121SKalle Valo iwl_trans_release_nic_access(trans, &flags); 198e705c121SKalle Valo } 199e705c121SKalle Valo } 200e705c121SKalle Valo IWL_EXPORT_SYMBOL(iwl_set_bits_mask_prph); 201e705c121SKalle Valo 202e705c121SKalle Valo void iwl_clear_bits_prph(struct iwl_trans *trans, u32 ofs, u32 mask) 203e705c121SKalle Valo { 204e705c121SKalle Valo unsigned long flags; 205e705c121SKalle Valo u32 val; 206e705c121SKalle Valo 20723ba9340SEmmanuel Grumbach if (iwl_trans_grab_nic_access(trans, &flags)) { 20814ef1b43SGolan Ben-Ami val = iwl_read_prph_no_grab(trans, ofs); 20914ef1b43SGolan Ben-Ami iwl_write_prph_no_grab(trans, ofs, (val & ~mask)); 210e705c121SKalle Valo iwl_trans_release_nic_access(trans, &flags); 211e705c121SKalle Valo } 212e705c121SKalle Valo } 213e705c121SKalle Valo IWL_EXPORT_SYMBOL(iwl_clear_bits_prph); 214e705c121SKalle Valo 215e705c121SKalle Valo void iwl_force_nmi(struct iwl_trans *trans) 216e705c121SKalle Valo { 217e705c121SKalle Valo if (trans->cfg->device_family != IWL_DEVICE_FAMILY_8000) { 218e705c121SKalle Valo iwl_write_prph(trans, DEVICE_SET_NMI_REG, 219e705c121SKalle Valo DEVICE_SET_NMI_VAL_DRV); 220e705c121SKalle Valo iwl_write_prph(trans, DEVICE_SET_NMI_REG, 221e705c121SKalle Valo DEVICE_SET_NMI_VAL_HW); 222e705c121SKalle Valo } else { 223e705c121SKalle Valo iwl_write_prph(trans, DEVICE_SET_NMI_8000_REG, 224e705c121SKalle Valo DEVICE_SET_NMI_8000_VAL); 225e705c121SKalle Valo iwl_write_prph(trans, DEVICE_SET_NMI_REG, 226e705c121SKalle Valo DEVICE_SET_NMI_VAL_DRV); 227e705c121SKalle Valo } 228e705c121SKalle Valo } 229e705c121SKalle Valo IWL_EXPORT_SYMBOL(iwl_force_nmi); 230e705c121SKalle Valo 231e705c121SKalle Valo static const char *get_fh_string(int cmd) 232e705c121SKalle Valo { 233e705c121SKalle Valo #define IWL_CMD(x) case x: return #x 234e705c121SKalle Valo switch (cmd) { 235e705c121SKalle Valo IWL_CMD(FH_RSCSR_CHNL0_STTS_WPTR_REG); 236e705c121SKalle Valo IWL_CMD(FH_RSCSR_CHNL0_RBDCB_BASE_REG); 237e705c121SKalle Valo IWL_CMD(FH_RSCSR_CHNL0_WPTR); 238e705c121SKalle Valo IWL_CMD(FH_MEM_RCSR_CHNL0_CONFIG_REG); 239e705c121SKalle Valo IWL_CMD(FH_MEM_RSSR_SHARED_CTRL_REG); 240e705c121SKalle Valo IWL_CMD(FH_MEM_RSSR_RX_STATUS_REG); 241e705c121SKalle Valo IWL_CMD(FH_MEM_RSSR_RX_ENABLE_ERR_IRQ2DRV); 242e705c121SKalle Valo IWL_CMD(FH_TSSR_TX_STATUS_REG); 243e705c121SKalle Valo IWL_CMD(FH_TSSR_TX_ERROR_REG); 244e705c121SKalle Valo default: 245e705c121SKalle Valo return "UNKNOWN"; 246e705c121SKalle Valo } 247e705c121SKalle Valo #undef IWL_CMD 248e705c121SKalle Valo } 249e705c121SKalle Valo 250e705c121SKalle Valo int iwl_dump_fh(struct iwl_trans *trans, char **buf) 251e705c121SKalle Valo { 252e705c121SKalle Valo int i; 253e705c121SKalle Valo static const u32 fh_tbl[] = { 254e705c121SKalle Valo FH_RSCSR_CHNL0_STTS_WPTR_REG, 255e705c121SKalle Valo FH_RSCSR_CHNL0_RBDCB_BASE_REG, 256e705c121SKalle Valo FH_RSCSR_CHNL0_WPTR, 257e705c121SKalle Valo FH_MEM_RCSR_CHNL0_CONFIG_REG, 258e705c121SKalle Valo FH_MEM_RSSR_SHARED_CTRL_REG, 259e705c121SKalle Valo FH_MEM_RSSR_RX_STATUS_REG, 260e705c121SKalle Valo FH_MEM_RSSR_RX_ENABLE_ERR_IRQ2DRV, 261e705c121SKalle Valo FH_TSSR_TX_STATUS_REG, 262e705c121SKalle Valo FH_TSSR_TX_ERROR_REG 263e705c121SKalle Valo }; 264e705c121SKalle Valo 265e705c121SKalle Valo #ifdef CONFIG_IWLWIFI_DEBUGFS 266e705c121SKalle Valo if (buf) { 267e705c121SKalle Valo int pos = 0; 268e705c121SKalle Valo size_t bufsz = ARRAY_SIZE(fh_tbl) * 48 + 40; 269e705c121SKalle Valo 270e705c121SKalle Valo *buf = kmalloc(bufsz, GFP_KERNEL); 271e705c121SKalle Valo if (!*buf) 272e705c121SKalle Valo return -ENOMEM; 273e705c121SKalle Valo 274e705c121SKalle Valo pos += scnprintf(*buf + pos, bufsz - pos, 275e705c121SKalle Valo "FH register values:\n"); 276e705c121SKalle Valo 277e705c121SKalle Valo for (i = 0; i < ARRAY_SIZE(fh_tbl); i++) 278e705c121SKalle Valo pos += scnprintf(*buf + pos, bufsz - pos, 279e705c121SKalle Valo " %34s: 0X%08x\n", 280e705c121SKalle Valo get_fh_string(fh_tbl[i]), 281e705c121SKalle Valo iwl_read_direct32(trans, fh_tbl[i])); 282e705c121SKalle Valo 283e705c121SKalle Valo return pos; 284e705c121SKalle Valo } 285e705c121SKalle Valo #endif 286e705c121SKalle Valo 287e705c121SKalle Valo IWL_ERR(trans, "FH register values:\n"); 288e705c121SKalle Valo for (i = 0; i < ARRAY_SIZE(fh_tbl); i++) 289e705c121SKalle Valo IWL_ERR(trans, " %34s: 0X%08x\n", 290e705c121SKalle Valo get_fh_string(fh_tbl[i]), 291e705c121SKalle Valo iwl_read_direct32(trans, fh_tbl[i])); 292e705c121SKalle Valo 293e705c121SKalle Valo return 0; 294e705c121SKalle Valo } 295