Release 4.11 drivers/net/wireless/intel/iwlwifi/iwl-io.c

Directory: drivers/net/wireless/intel/iwlwifi
/******************************************************************************
 *
 * Copyright(c) 2003 - 2014 Intel Corporation. All rights reserved.
 * Copyright(c) 2015 - 2016 Intel Deutschland GmbH
 *
 * 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 <linuxwifi@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);
}
Contributors
Person Tokens Prop Commits CommitProp
Emmanuel Grumbach 36 100.00% 1 100.00%
Total 36 100.00% 1 100.00%


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);
}
Contributors
Person Tokens Prop Commits CommitProp
Emmanuel Grumbach 36 100.00% 1 100.00%
Total 36 100.00% 1 100.00%


IWL_EXPORT_SYMBOL(iwl_write32);



void iwl_write64(struct iwl_trans *trans, u64 ofs, u64 val)
{
	trace_iwlwifi_dev_iowrite64(trans->dev, ofs, val);
	iwl_trans_write32(trans, ofs, val & 0xffffffff);
	iwl_trans_write32(trans, ofs + 4, val >> 32);
}
Contributors
Person Tokens Prop Commits CommitProp
Sara Sharon 51 100.00% 1 100.00%
Total 51 100.00% 1 100.00%


IWL_EXPORT_SYMBOL(iwl_write64);



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;
}
Contributors
Person Tokens Prop Commits CommitProp
Emmanuel Grumbach 37 100.00% 1 100.00%
Total 37 100.00% 1 100.00%


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;
}
Contributors
Person Tokens Prop Commits CommitProp
Johannes Berg 69 95.83% 1 50.00%
Emmanuel Grumbach 3 4.17% 1 50.00%
Total 72 100.00% 2 100.00%


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, &flags)) {
		value = iwl_read32(trans, reg);
		iwl_trans_release_nic_access(trans, &flags);
	}

	return value;
}
Contributors
Person Tokens Prop Commits CommitProp
Johannes Berg 36 66.67% 1 20.00%
Emmanuel Grumbach 14 25.93% 3 60.00%
Lilach Edelstein 4 7.41% 1 20.00%
Total 54 100.00% 5 100.00%


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, &flags)) {
		iwl_write32(trans, reg, value);
		iwl_trans_release_nic_access(trans, &flags);
	}
}
Contributors
Person Tokens Prop Commits CommitProp
Johannes Berg 37 75.51% 1 25.00%
Emmanuel Grumbach 8 16.33% 2 50.00%
Lilach Edelstein 4 8.16% 1 25.00%
Total 49 100.00% 4 100.00%


IWL_EXPORT_SYMBOL(iwl_write_direct32);



void iwl_write_direct64(struct iwl_trans *trans, u64 reg, u64 value)
{
	unsigned long flags;

	if (iwl_trans_grab_nic_access(trans, &flags)) {
		iwl_write64(trans, reg, value);
		iwl_trans_release_nic_access(trans, &flags);
	}
}
Contributors
Person Tokens Prop Commits CommitProp
Sara Sharon 49 100.00% 1 100.00%
Total 49 100.00% 1 100.00%


IWL_EXPORT_SYMBOL(iwl_write_direct64);



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;
}
Contributors
Person Tokens Prop Commits CommitProp
Johannes Berg 62 95.38% 1 50.00%
Emmanuel Grumbach 3 4.62% 1 50.00%
Total 65 100.00% 2 100.00%


IWL_EXPORT_SYMBOL(iwl_poll_direct_bit);



u32 iwl_read_prph_no_grab(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;
}
Contributors
Person Tokens Prop Commits CommitProp
Emmanuel Grumbach 20 54.05% 2 50.00%
Johannes Berg 16 43.24% 1 25.00%
Golan Ben-Ami 1 2.70% 1 25.00%
Total 37 100.00% 4 100.00%


IWL_EXPORT_SYMBOL(iwl_read_prph_no_grab);



void iwl_write_prph_no_grab(struct iwl_trans *trans, u32 ofs, u32 val)
{
	trace_iwlwifi_dev_iowrite_prph32(trans->dev, ofs, val);
	iwl_trans_write_prph(trans, ofs, val);
}
Contributors
Person Tokens Prop Commits CommitProp
Johannes Berg 23 63.89% 1 25.00%
Emmanuel Grumbach 12 33.33% 2 50.00%
Golan Ben-Ami 1 2.78% 1 25.00%
Total 36 100.00% 4 100.00%


IWL_EXPORT_SYMBOL(iwl_write_prph_no_grab);



void iwl_write_prph64_no_grab(struct iwl_trans *trans, u64 ofs, u64 val)
{
	trace_iwlwifi_dev_iowrite_prph64(trans->dev, ofs, val);
	iwl_write_prph_no_grab(trans, ofs, val & 0xffffffff);
	iwl_write_prph_no_grab(trans, ofs + 4, val >> 32);
}
Contributors
Person Tokens Prop Commits CommitProp
Sara Sharon 51 100.00% 1 100.00%
Total 51 100.00% 1 100.00%


IWL_EXPORT_SYMBOL(iwl_write_prph64_no_grab);



u32 iwl_read_prph(struct iwl_trans *trans, u32 ofs)
{
	unsigned long flags;
	u32 val = 0x5a5a5a5a;

	if (iwl_trans_grab_nic_access(trans, &flags)) {
		val = iwl_read_prph_no_grab(trans, ofs);
		iwl_trans_release_nic_access(trans, &flags);
	}
	return val;
}
Contributors
Person Tokens Prop Commits CommitProp
Johannes Berg 33 61.11% 1 14.29%
Emmanuel Grumbach 16 29.63% 4 57.14%
Lilach Edelstein 4 7.41% 1 14.29%
Golan Ben-Ami 1 1.85% 1 14.29%
Total 54 100.00% 7 100.00%


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, &flags)) {
		iwl_write_prph_no_grab(trans, ofs, val);
		iwl_trans_release_nic_access(trans, &flags);
	}
}
Contributors
Person Tokens Prop Commits CommitProp
Johannes Berg 34 69.39% 1 16.67%
Emmanuel Grumbach 10 20.41% 3 50.00%
Lilach Edelstein 4 8.16% 1 16.67%
Golan Ben-Ami 1 2.04% 1 16.67%
Total 49 100.00% 6 100.00%


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;
}

Contributors
Person Tokens Prop Commits CommitProp
Eran Harary 72 100.00% 1 100.00%
Total 72 100.00% 1 100.00%



void iwl_set_bits_prph(struct iwl_trans *trans, u32 ofs, u32 mask)
{
	unsigned long flags;

	if (iwl_trans_grab_nic_access(trans, &flags)) {
		iwl_write_prph_no_grab(trans, ofs,
				       iwl_read_prph_no_grab(trans, ofs) |
				       mask);
		iwl_trans_release_nic_access(trans, &flags);
	}
}
Contributors
Person Tokens Prop Commits CommitProp
Johannes Berg 34 60.71% 1 14.29%
Emmanuel Grumbach 12 21.43% 3 42.86%
Lilach Edelstein 4 7.14% 1 14.29%
Stanislaw Gruszka 4 7.14% 1 14.29%
Golan Ben-Ami 2 3.57% 1 14.29%
Total 56 100.00% 7 100.00%


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, &flags)) {
		iwl_write_prph_no_grab(trans, ofs,
				       (iwl_read_prph_no_grab(trans, ofs) &
					mask) | bits);
		iwl_trans_release_nic_access(trans, &flags);
	}
}
Contributors
Person Tokens Prop Commits CommitProp
Johannes Berg 41 65.08% 1 14.29%
Emmanuel Grumbach 12 19.05% 3 42.86%
Stanislaw Gruszka 4 6.35% 1 14.29%
Lilach Edelstein 4 6.35% 1 14.29%
Golan Ben-Ami 2 3.17% 1 14.29%
Total 63 100.00% 7 100.00%


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, &flags)) {
		val = iwl_read_prph_no_grab(trans, ofs);
		iwl_write_prph_no_grab(trans, ofs, (val & ~mask));
		iwl_trans_release_nic_access(trans, &flags);
	}
}
Contributors
Person Tokens Prop Commits CommitProp
Johannes Berg 44 66.67% 1 14.29%
Emmanuel Grumbach 12 18.18% 3 42.86%
Lilach Edelstein 4 6.06% 1 14.29%
Stanislaw Gruszka 4 6.06% 1 14.29%
Golan Ben-Ami 2 3.03% 1 14.29%
Total 66 100.00% 7 100.00%


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);
	}
}
Contributors
Person Tokens Prop Commits CommitProp
Liad Kaufman 36 59.02% 1 25.00%
Emmanuel Grumbach 25 40.98% 3 75.00%
Total 61 100.00% 4 100.00%


IWL_EXPORT_SYMBOL(iwl_force_nmi);



static const char *get_rfh_string(int cmd)
{

#define IWL_CMD(x) case x: return #x

#define IWL_CMD_MQ(arg, reg, q) { if (arg == reg(q)) return #reg; }

	int i;

	for (i = 0; i < IWL_MAX_RX_HW_QUEUES; i++) {
		IWL_CMD_MQ(cmd, RFH_Q_FRBDCB_BA_LSB, i);
		IWL_CMD_MQ(cmd, RFH_Q_FRBDCB_WIDX, i);
		IWL_CMD_MQ(cmd, RFH_Q_FRBDCB_RIDX, i);
		IWL_CMD_MQ(cmd, RFH_Q_URBD_STTS_WPTR_LSB, i);
	}

	switch (cmd) {
	IWL_CMD(RFH_RXF_DMA_CFG);
	IWL_CMD(RFH_GEN_CFG);
	IWL_CMD(RFH_GEN_STATUS);
	IWL_CMD(FH_TSSR_TX_STATUS_REG);
	IWL_CMD(FH_TSSR_TX_ERROR_REG);
	default:
		return "UNKNOWN";
	}

#undef IWL_CMD_MQ
}

Contributors
Person Tokens Prop Commits CommitProp
Sara Sharon 105 86.78% 1 50.00%
Inbal Hacohen 16 13.22% 1 50.00%
Total 121 100.00% 2 100.00%


struct reg {
	
u32 addr;
	
bool is64;
};



static int iwl_dump_rfh(struct iwl_trans *trans, char **buf)
{
	int i, q;
	int num_q = trans->num_rx_queues;
	static const u32 rfh_tbl[] = {
		RFH_RXF_DMA_CFG,
		RFH_GEN_CFG,
		RFH_GEN_STATUS,
		FH_TSSR_TX_STATUS_REG,
		FH_TSSR_TX_ERROR_REG,
        };
	static const struct reg rfh_mq_tbl[] = {
		{ RFH_Q0_FRBDCB_BA_LSB, true },
		{ RFH_Q0_FRBDCB_WIDX, false },
		{ RFH_Q0_FRBDCB_RIDX, false },
		{ RFH_Q0_URBD_STTS_WPTR_LSB, true },
        };

#ifdef CONFIG_IWLWIFI_DEBUGFS
	if (buf) {
		int pos = 0;
		/*
                 * Register (up to 34 for name + 8 blank/q for MQ): 40 chars
                 * Colon + space: 2 characters
                 * 0X%08x: 10 characters
                 * New line: 1 character
                 * Total of 53 characters
                 */
		size_t bufsz = ARRAY_SIZE(rfh_tbl) * 53 +
			       ARRAY_SIZE(rfh_mq_tbl) * 53 * num_q + 40;

		*buf = kmalloc(bufsz, GFP_KERNEL);
		if (!*buf)
			return -ENOMEM;

		pos += scnprintf(*buf + pos, bufsz - pos,
				"RFH register values:\n");

		for (i = 0; i < ARRAY_SIZE(rfh_tbl); i++)
			pos += scnprintf(*buf + pos, bufsz - pos,
				"%40s: 0X%08x\n",
				get_rfh_string(rfh_tbl[i]),
				iwl_read_prph(trans, rfh_tbl[i]));

		for (i = 0; i < ARRAY_SIZE(rfh_mq_tbl); i++)
			for (q = 0; q < num_q; q++) {
				u32 addr = rfh_mq_tbl[i].addr;

				addr += q * (rfh_mq_tbl[i].is64 ? 8 : 4);
				pos += scnprintf(*buf + pos, bufsz - pos,
					"%34s(q %2d): 0X%08x\n",
					get_rfh_string(addr), q,
					iwl_read_prph(trans, addr));
			}

		return pos;
	}
#endif

	IWL_ERR(trans, "RFH register values:\n");
	for (i = 0; i < ARRAY_SIZE(rfh_tbl); i++)
		IWL_ERR(trans, "  %34s: 0X%08x\n",
			get_rfh_string(rfh_tbl[i]),
			iwl_read_prph(trans, rfh_tbl[i]));

	for (i = 0; i < ARRAY_SIZE(rfh_mq_tbl); i++)
		for (q = 0; q < num_q; q++) {
			u32 addr = rfh_mq_tbl[i].addr;

			addr += q * (rfh_mq_tbl[i].is64 ? 8 : 4);
			IWL_ERR(trans, "  %34s(q %d): 0X%08x\n",
				get_rfh_string(addr), q,
				iwl_read_prph(trans, addr));
		}

	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
Sara Sharon 424 100.00% 1 100.00%
Total 424 100.00% 1 100.00%



static const char *get_fh_string(int cmd)
{
	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
}

Contributors
Person Tokens Prop Commits CommitProp
Inbal Hacohen 59 85.51% 1 50.00%
Sara Sharon 10 14.49% 1 50.00%
Total 69 100.00% 2 100.00%



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
	};

	if (trans->cfg->mq_rx_supported)
		return iwl_dump_rfh(trans, buf);

#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;
}
Contributors
Person Tokens Prop Commits CommitProp
Inbal Hacohen 212 92.98% 1 50.00%
Sara Sharon 16 7.02% 1 50.00%
Total 228 100.00% 2 100.00%

Overall Contributors
Person Tokens Prop Commits CommitProp
Sara Sharon 733 37.21% 2 10.00%
Johannes Berg 449 22.79% 2 10.00%
Inbal Hacohen 290 14.72% 1 5.00%
Emmanuel Grumbach 283 14.37% 9 45.00%
Eran Harary 72 3.65% 1 5.00%
Liad Kaufman 44 2.23% 1 5.00%
Don Fry 39 1.98% 1 5.00%
Lilach Edelstein 28 1.42% 1 5.00%
Golan Ben-Ami 20 1.02% 1 5.00%
Stanislaw Gruszka 12 0.61% 1 5.00%
Total 1970 100.00% 20 100.00%
Directory: drivers/net/wireless/intel/iwlwifi

Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.
Created with cregit.
Person	Tokens	Prop	Commits	CommitProp
Emmanuel Grumbach	36	100.00%	1	100.00%
Total	36	100.00%	1	100.00%
cregit-Linux how code gets into the kernel

Release 4.11 drivers/net/wireless/intel/iwlwifi/iwl-io.c

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