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author | Kalle Valo <kvalo@codeaurora.org> | 2015-11-17 18:57:38 (GMT) |
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committer | Kalle Valo <kvalo@codeaurora.org> | 2015-11-18 12:28:30 (GMT) |
commit | e705c12146aa9c69ca498d4ebb83ba7138f9b41f (patch) | |
tree | b55d4eb7a83c2ec117f460684eb71c89eee6a709 /drivers/net/wireless/intel/iwlwifi/iwl-io.c | |
parent | 7ac9a364c1721a863ecc6cc9aba66e10114908db (diff) | |
download | linux-e705c12146aa9c69ca498d4ebb83ba7138f9b41f.tar.xz |
iwlwifi: move under intel vendor directory
Part of reorganising wireless drivers directory and Kconfig.
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Diffstat (limited to 'drivers/net/wireless/intel/iwlwifi/iwl-io.c')
-rw-r--r-- | drivers/net/wireless/intel/iwlwifi/iwl-io.c | 289 |
1 files changed, 289 insertions, 0 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-io.c b/drivers/net/wireless/intel/iwlwifi/iwl-io.c new file mode 100644 index 0000000..0bd9d4a --- /dev/null +++ b/drivers/net/wireless/intel/iwlwifi/iwl-io.c @@ -0,0 +1,289 @@ +/****************************************************************************** + * + * Copyright(c) 2003 - 2014 Intel Corporation. All rights reserved. + * + * Portions of this file are derived from the ipw3945 project. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of version 2 of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA + * + * The full GNU General Public License is included in this distribution in the + * file called LICENSE. + * + * Contact Information: + * Intel Linux Wireless <ilw@linux.intel.com> + * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 + * + *****************************************************************************/ +#include <linux/delay.h> +#include <linux/device.h> +#include <linux/export.h> + +#include "iwl-drv.h" +#include "iwl-io.h" +#include "iwl-csr.h" +#include "iwl-debug.h" +#include "iwl-prph.h" +#include "iwl-fh.h" + +void iwl_write8(struct iwl_trans *trans, u32 ofs, u8 val) +{ + trace_iwlwifi_dev_iowrite8(trans->dev, ofs, val); + iwl_trans_write8(trans, ofs, val); +} +IWL_EXPORT_SYMBOL(iwl_write8); + +void iwl_write32(struct iwl_trans *trans, u32 ofs, u32 val) +{ + trace_iwlwifi_dev_iowrite32(trans->dev, ofs, val); + iwl_trans_write32(trans, ofs, val); +} +IWL_EXPORT_SYMBOL(iwl_write32); + +u32 iwl_read32(struct iwl_trans *trans, u32 ofs) +{ + u32 val = iwl_trans_read32(trans, ofs); + + trace_iwlwifi_dev_ioread32(trans->dev, ofs, val); + return val; +} +IWL_EXPORT_SYMBOL(iwl_read32); + +#define IWL_POLL_INTERVAL 10 /* microseconds */ + +int iwl_poll_bit(struct iwl_trans *trans, u32 addr, + u32 bits, u32 mask, int timeout) +{ + int t = 0; + + do { + if ((iwl_read32(trans, addr) & mask) == (bits & mask)) + return t; + udelay(IWL_POLL_INTERVAL); + t += IWL_POLL_INTERVAL; + } while (t < timeout); + + return -ETIMEDOUT; +} +IWL_EXPORT_SYMBOL(iwl_poll_bit); + +u32 iwl_read_direct32(struct iwl_trans *trans, u32 reg) +{ + u32 value = 0x5a5a5a5a; + unsigned long flags; + if (iwl_trans_grab_nic_access(trans, false, &flags)) { + value = iwl_read32(trans, reg); + iwl_trans_release_nic_access(trans, &flags); + } + + return value; +} +IWL_EXPORT_SYMBOL(iwl_read_direct32); + +void iwl_write_direct32(struct iwl_trans *trans, u32 reg, u32 value) +{ + unsigned long flags; + + if (iwl_trans_grab_nic_access(trans, false, &flags)) { + iwl_write32(trans, reg, value); + iwl_trans_release_nic_access(trans, &flags); + } +} +IWL_EXPORT_SYMBOL(iwl_write_direct32); + +int iwl_poll_direct_bit(struct iwl_trans *trans, u32 addr, u32 mask, + int timeout) +{ + int t = 0; + + do { + if ((iwl_read_direct32(trans, addr) & mask) == mask) + return t; + udelay(IWL_POLL_INTERVAL); + t += IWL_POLL_INTERVAL; + } while (t < timeout); + + return -ETIMEDOUT; +} +IWL_EXPORT_SYMBOL(iwl_poll_direct_bit); + +u32 __iwl_read_prph(struct iwl_trans *trans, u32 ofs) +{ + u32 val = iwl_trans_read_prph(trans, ofs); + trace_iwlwifi_dev_ioread_prph32(trans->dev, ofs, val); + return val; +} + +void __iwl_write_prph(struct iwl_trans *trans, u32 ofs, u32 val) +{ + trace_iwlwifi_dev_iowrite_prph32(trans->dev, ofs, val); + iwl_trans_write_prph(trans, ofs, val); +} + +u32 iwl_read_prph(struct iwl_trans *trans, u32 ofs) +{ + unsigned long flags; + u32 val = 0x5a5a5a5a; + + if (iwl_trans_grab_nic_access(trans, false, &flags)) { + val = __iwl_read_prph(trans, ofs); + iwl_trans_release_nic_access(trans, &flags); + } + return val; +} +IWL_EXPORT_SYMBOL(iwl_read_prph); + +void iwl_write_prph(struct iwl_trans *trans, u32 ofs, u32 val) +{ + unsigned long flags; + + if (iwl_trans_grab_nic_access(trans, false, &flags)) { + __iwl_write_prph(trans, ofs, val); + iwl_trans_release_nic_access(trans, &flags); + } +} +IWL_EXPORT_SYMBOL(iwl_write_prph); + +int iwl_poll_prph_bit(struct iwl_trans *trans, u32 addr, + u32 bits, u32 mask, int timeout) +{ + int t = 0; + + do { + if ((iwl_read_prph(trans, addr) & mask) == (bits & mask)) + return t; + udelay(IWL_POLL_INTERVAL); + t += IWL_POLL_INTERVAL; + } while (t < timeout); + + return -ETIMEDOUT; +} + +void iwl_set_bits_prph(struct iwl_trans *trans, u32 ofs, u32 mask) +{ + unsigned long flags; + + if (iwl_trans_grab_nic_access(trans, false, &flags)) { + __iwl_write_prph(trans, ofs, + __iwl_read_prph(trans, ofs) | mask); + iwl_trans_release_nic_access(trans, &flags); + } +} +IWL_EXPORT_SYMBOL(iwl_set_bits_prph); + +void iwl_set_bits_mask_prph(struct iwl_trans *trans, u32 ofs, + u32 bits, u32 mask) +{ + unsigned long flags; + + if (iwl_trans_grab_nic_access(trans, false, &flags)) { + __iwl_write_prph(trans, ofs, + (__iwl_read_prph(trans, ofs) & mask) | bits); + iwl_trans_release_nic_access(trans, &flags); + } +} +IWL_EXPORT_SYMBOL(iwl_set_bits_mask_prph); + +void iwl_clear_bits_prph(struct iwl_trans *trans, u32 ofs, u32 mask) +{ + unsigned long flags; + u32 val; + + if (iwl_trans_grab_nic_access(trans, false, &flags)) { + val = __iwl_read_prph(trans, ofs); + __iwl_write_prph(trans, ofs, (val & ~mask)); + iwl_trans_release_nic_access(trans, &flags); + } +} +IWL_EXPORT_SYMBOL(iwl_clear_bits_prph); + +void iwl_force_nmi(struct iwl_trans *trans) +{ + if (trans->cfg->device_family != IWL_DEVICE_FAMILY_8000) { + iwl_write_prph(trans, DEVICE_SET_NMI_REG, + DEVICE_SET_NMI_VAL_DRV); + iwl_write_prph(trans, DEVICE_SET_NMI_REG, + DEVICE_SET_NMI_VAL_HW); + } else { + iwl_write_prph(trans, DEVICE_SET_NMI_8000_REG, + DEVICE_SET_NMI_8000_VAL); + iwl_write_prph(trans, DEVICE_SET_NMI_REG, + DEVICE_SET_NMI_VAL_DRV); + } +} +IWL_EXPORT_SYMBOL(iwl_force_nmi); + +static const char *get_fh_string(int cmd) +{ +#define IWL_CMD(x) case x: return #x + switch (cmd) { + IWL_CMD(FH_RSCSR_CHNL0_STTS_WPTR_REG); + IWL_CMD(FH_RSCSR_CHNL0_RBDCB_BASE_REG); + IWL_CMD(FH_RSCSR_CHNL0_WPTR); + IWL_CMD(FH_MEM_RCSR_CHNL0_CONFIG_REG); + IWL_CMD(FH_MEM_RSSR_SHARED_CTRL_REG); + IWL_CMD(FH_MEM_RSSR_RX_STATUS_REG); + IWL_CMD(FH_MEM_RSSR_RX_ENABLE_ERR_IRQ2DRV); + IWL_CMD(FH_TSSR_TX_STATUS_REG); + IWL_CMD(FH_TSSR_TX_ERROR_REG); + default: + return "UNKNOWN"; + } +#undef IWL_CMD +} + +int iwl_dump_fh(struct iwl_trans *trans, char **buf) +{ + int i; + static const u32 fh_tbl[] = { + FH_RSCSR_CHNL0_STTS_WPTR_REG, + FH_RSCSR_CHNL0_RBDCB_BASE_REG, + FH_RSCSR_CHNL0_WPTR, + FH_MEM_RCSR_CHNL0_CONFIG_REG, + FH_MEM_RSSR_SHARED_CTRL_REG, + FH_MEM_RSSR_RX_STATUS_REG, + FH_MEM_RSSR_RX_ENABLE_ERR_IRQ2DRV, + FH_TSSR_TX_STATUS_REG, + FH_TSSR_TX_ERROR_REG + }; + +#ifdef CONFIG_IWLWIFI_DEBUGFS + if (buf) { + int pos = 0; + size_t bufsz = ARRAY_SIZE(fh_tbl) * 48 + 40; + + *buf = kmalloc(bufsz, GFP_KERNEL); + if (!*buf) + return -ENOMEM; + + pos += scnprintf(*buf + pos, bufsz - pos, + "FH register values:\n"); + + for (i = 0; i < ARRAY_SIZE(fh_tbl); i++) + pos += scnprintf(*buf + pos, bufsz - pos, + " %34s: 0X%08x\n", + get_fh_string(fh_tbl[i]), + iwl_read_direct32(trans, fh_tbl[i])); + + return pos; + } +#endif + + IWL_ERR(trans, "FH register values:\n"); + for (i = 0; i < ARRAY_SIZE(fh_tbl); i++) + IWL_ERR(trans, " %34s: 0X%08x\n", + get_fh_string(fh_tbl[i]), + iwl_read_direct32(trans, fh_tbl[i])); + + return 0; +} |