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931 lines
21 KiB
931 lines
21 KiB
// SPDX-License-Identifier: GPL-2.0 |
|
#include <linux/dcache.h> |
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#include <linux/debugfs.h> |
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#include <linux/delay.h> |
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#include <linux/hardirq.h> |
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#include <linux/mm.h> |
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#include <linux/string.h> |
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#include <linux/slab.h> |
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#include <linux/export.h> |
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|
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#include "decl.h" |
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#include "cmd.h" |
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#include "debugfs.h" |
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|
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static struct dentry *lbs_dir; |
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static char *szStates[] = { |
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"Connected", |
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"Disconnected" |
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}; |
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|
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#ifdef PROC_DEBUG |
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static void lbs_debug_init(struct lbs_private *priv); |
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#endif |
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|
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static ssize_t write_file_dummy(struct file *file, const char __user *buf, |
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size_t count, loff_t *ppos) |
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{ |
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return -EINVAL; |
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} |
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|
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static const size_t len = PAGE_SIZE; |
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|
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static ssize_t lbs_dev_info(struct file *file, char __user *userbuf, |
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size_t count, loff_t *ppos) |
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{ |
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struct lbs_private *priv = file->private_data; |
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size_t pos = 0; |
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unsigned long addr = get_zeroed_page(GFP_KERNEL); |
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char *buf = (char *)addr; |
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ssize_t res; |
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if (!buf) |
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return -ENOMEM; |
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|
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pos += snprintf(buf+pos, len-pos, "state = %s\n", |
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szStates[priv->connect_status]); |
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pos += snprintf(buf+pos, len-pos, "region_code = %02x\n", |
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(u32) priv->regioncode); |
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|
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res = simple_read_from_buffer(userbuf, count, ppos, buf, pos); |
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|
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free_page(addr); |
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return res; |
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} |
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|
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static ssize_t lbs_sleepparams_write(struct file *file, |
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const char __user *user_buf, size_t count, |
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loff_t *ppos) |
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{ |
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struct lbs_private *priv = file->private_data; |
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ssize_t ret; |
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struct sleep_params sp; |
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int p1, p2, p3, p4, p5, p6; |
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char *buf; |
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|
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buf = memdup_user_nul(user_buf, min(count, len - 1)); |
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if (IS_ERR(buf)) |
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return PTR_ERR(buf); |
|
|
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ret = sscanf(buf, "%d %d %d %d %d %d", &p1, &p2, &p3, &p4, &p5, &p6); |
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if (ret != 6) { |
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ret = -EINVAL; |
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goto out_unlock; |
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} |
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sp.sp_error = p1; |
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sp.sp_offset = p2; |
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sp.sp_stabletime = p3; |
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sp.sp_calcontrol = p4; |
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sp.sp_extsleepclk = p5; |
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sp.sp_reserved = p6; |
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|
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ret = lbs_cmd_802_11_sleep_params(priv, CMD_ACT_SET, &sp); |
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if (!ret) |
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ret = count; |
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else if (ret > 0) |
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ret = -EINVAL; |
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|
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out_unlock: |
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kfree(buf); |
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return ret; |
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} |
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|
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static ssize_t lbs_sleepparams_read(struct file *file, char __user *userbuf, |
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size_t count, loff_t *ppos) |
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{ |
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struct lbs_private *priv = file->private_data; |
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ssize_t ret; |
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size_t pos = 0; |
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struct sleep_params sp; |
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unsigned long addr = get_zeroed_page(GFP_KERNEL); |
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char *buf = (char *)addr; |
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if (!buf) |
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return -ENOMEM; |
|
|
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ret = lbs_cmd_802_11_sleep_params(priv, CMD_ACT_GET, &sp); |
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if (ret) |
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goto out_unlock; |
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|
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pos += snprintf(buf, len, "%d %d %d %d %d %d\n", sp.sp_error, |
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sp.sp_offset, sp.sp_stabletime, |
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sp.sp_calcontrol, sp.sp_extsleepclk, |
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sp.sp_reserved); |
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|
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ret = simple_read_from_buffer(userbuf, count, ppos, buf, pos); |
|
|
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out_unlock: |
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free_page(addr); |
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return ret; |
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} |
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|
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static ssize_t lbs_host_sleep_write(struct file *file, |
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const char __user *user_buf, size_t count, |
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loff_t *ppos) |
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{ |
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struct lbs_private *priv = file->private_data; |
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ssize_t ret; |
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int host_sleep; |
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char *buf; |
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|
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buf = memdup_user_nul(user_buf, min(count, len - 1)); |
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if (IS_ERR(buf)) |
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return PTR_ERR(buf); |
|
|
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ret = sscanf(buf, "%d", &host_sleep); |
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if (ret != 1) { |
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ret = -EINVAL; |
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goto out_unlock; |
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} |
|
|
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if (host_sleep == 0) |
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ret = lbs_set_host_sleep(priv, 0); |
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else if (host_sleep == 1) { |
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if (priv->wol_criteria == EHS_REMOVE_WAKEUP) { |
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netdev_info(priv->dev, |
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"wake parameters not configured\n"); |
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ret = -EINVAL; |
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goto out_unlock; |
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} |
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ret = lbs_set_host_sleep(priv, 1); |
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} else { |
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netdev_err(priv->dev, "invalid option\n"); |
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ret = -EINVAL; |
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} |
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|
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if (!ret) |
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ret = count; |
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|
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out_unlock: |
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kfree(buf); |
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return ret; |
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} |
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|
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static ssize_t lbs_host_sleep_read(struct file *file, char __user *userbuf, |
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size_t count, loff_t *ppos) |
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{ |
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struct lbs_private *priv = file->private_data; |
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ssize_t ret; |
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size_t pos = 0; |
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unsigned long addr = get_zeroed_page(GFP_KERNEL); |
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char *buf = (char *)addr; |
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if (!buf) |
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return -ENOMEM; |
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|
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pos += snprintf(buf, len, "%d\n", priv->is_host_sleep_activated); |
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|
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ret = simple_read_from_buffer(userbuf, count, ppos, buf, pos); |
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|
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free_page(addr); |
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return ret; |
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} |
|
|
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/* |
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* When calling CMD_802_11_SUBSCRIBE_EVENT with CMD_ACT_GET, me might |
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* get a bunch of vendor-specific TLVs (a.k.a. IEs) back from the |
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* firmware. Here's an example: |
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* 04 01 02 00 00 00 05 01 02 00 00 00 06 01 02 00 |
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* 00 00 07 01 02 00 3c 00 00 00 00 00 00 00 03 03 |
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* 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |
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* |
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* The 04 01 is the TLV type (here TLV_TYPE_RSSI_LOW), 02 00 is the length, |
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* 00 00 are the data bytes of this TLV. For this TLV, their meaning is |
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* defined in mrvlietypes_thresholds |
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* |
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* This function searches in this TLV data chunk for a given TLV type |
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* and returns a pointer to the first data byte of the TLV, or to NULL |
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* if the TLV hasn't been found. |
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*/ |
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static void *lbs_tlv_find(uint16_t tlv_type, const uint8_t *tlv, uint16_t size) |
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{ |
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struct mrvl_ie_header *tlv_h; |
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uint16_t length; |
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ssize_t pos = 0; |
|
|
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while (pos < size) { |
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tlv_h = (struct mrvl_ie_header *) tlv; |
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if (!tlv_h->len) |
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return NULL; |
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if (tlv_h->type == cpu_to_le16(tlv_type)) |
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return tlv_h; |
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length = le16_to_cpu(tlv_h->len) + sizeof(*tlv_h); |
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pos += length; |
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tlv += length; |
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} |
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return NULL; |
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} |
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|
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|
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static ssize_t lbs_threshold_read(uint16_t tlv_type, uint16_t event_mask, |
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struct file *file, char __user *userbuf, |
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size_t count, loff_t *ppos) |
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{ |
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struct cmd_ds_802_11_subscribe_event *subscribed; |
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struct mrvl_ie_thresholds *got; |
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struct lbs_private *priv = file->private_data; |
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ssize_t ret = 0; |
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size_t pos = 0; |
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char *buf; |
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u8 value; |
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u8 freq; |
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int events = 0; |
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|
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buf = (char *)get_zeroed_page(GFP_KERNEL); |
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if (!buf) |
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return -ENOMEM; |
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|
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subscribed = kzalloc(sizeof(*subscribed), GFP_KERNEL); |
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if (!subscribed) { |
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ret = -ENOMEM; |
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goto out_page; |
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} |
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|
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subscribed->hdr.size = cpu_to_le16(sizeof(*subscribed)); |
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subscribed->action = cpu_to_le16(CMD_ACT_GET); |
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|
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ret = lbs_cmd_with_response(priv, CMD_802_11_SUBSCRIBE_EVENT, subscribed); |
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if (ret) |
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goto out_cmd; |
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|
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got = lbs_tlv_find(tlv_type, subscribed->tlv, sizeof(subscribed->tlv)); |
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if (got) { |
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value = got->value; |
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freq = got->freq; |
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events = le16_to_cpu(subscribed->events); |
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|
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pos += snprintf(buf, len, "%d %d %d\n", value, freq, |
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!!(events & event_mask)); |
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} |
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|
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ret = simple_read_from_buffer(userbuf, count, ppos, buf, pos); |
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|
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out_cmd: |
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kfree(subscribed); |
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|
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out_page: |
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free_page((unsigned long)buf); |
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return ret; |
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} |
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|
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static ssize_t lbs_threshold_write(uint16_t tlv_type, uint16_t event_mask, |
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struct file *file, |
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const char __user *userbuf, size_t count, |
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loff_t *ppos) |
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{ |
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struct cmd_ds_802_11_subscribe_event *events; |
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struct mrvl_ie_thresholds *tlv; |
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struct lbs_private *priv = file->private_data; |
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int value, freq, new_mask; |
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uint16_t curr_mask; |
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char *buf; |
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int ret; |
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|
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buf = memdup_user_nul(userbuf, min(count, len - 1)); |
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if (IS_ERR(buf)) |
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return PTR_ERR(buf); |
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|
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ret = sscanf(buf, "%d %d %d", &value, &freq, &new_mask); |
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if (ret != 3) { |
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ret = -EINVAL; |
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goto out_page; |
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} |
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events = kzalloc(sizeof(*events), GFP_KERNEL); |
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if (!events) { |
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ret = -ENOMEM; |
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goto out_page; |
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} |
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|
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events->hdr.size = cpu_to_le16(sizeof(*events)); |
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events->action = cpu_to_le16(CMD_ACT_GET); |
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|
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ret = lbs_cmd_with_response(priv, CMD_802_11_SUBSCRIBE_EVENT, events); |
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if (ret) |
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goto out_events; |
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|
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curr_mask = le16_to_cpu(events->events); |
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|
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if (new_mask) |
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new_mask = curr_mask | event_mask; |
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else |
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new_mask = curr_mask & ~event_mask; |
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|
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/* Now everything is set and we can send stuff down to the firmware */ |
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|
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tlv = (void *)events->tlv; |
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|
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events->action = cpu_to_le16(CMD_ACT_SET); |
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events->events = cpu_to_le16(new_mask); |
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tlv->header.type = cpu_to_le16(tlv_type); |
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tlv->header.len = cpu_to_le16(sizeof(*tlv) - sizeof(tlv->header)); |
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tlv->value = value; |
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if (tlv_type != TLV_TYPE_BCNMISS) |
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tlv->freq = freq; |
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|
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/* The command header, the action, the event mask, and one TLV */ |
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events->hdr.size = cpu_to_le16(sizeof(events->hdr) + 4 + sizeof(*tlv)); |
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|
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ret = lbs_cmd_with_response(priv, CMD_802_11_SUBSCRIBE_EVENT, events); |
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|
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if (!ret) |
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ret = count; |
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out_events: |
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kfree(events); |
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out_page: |
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kfree(buf); |
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return ret; |
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} |
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static ssize_t lbs_lowrssi_read(struct file *file, char __user *userbuf, |
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size_t count, loff_t *ppos) |
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{ |
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return lbs_threshold_read(TLV_TYPE_RSSI_LOW, CMD_SUBSCRIBE_RSSI_LOW, |
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file, userbuf, count, ppos); |
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} |
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|
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static ssize_t lbs_lowrssi_write(struct file *file, const char __user *userbuf, |
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size_t count, loff_t *ppos) |
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{ |
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return lbs_threshold_write(TLV_TYPE_RSSI_LOW, CMD_SUBSCRIBE_RSSI_LOW, |
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file, userbuf, count, ppos); |
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} |
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|
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static ssize_t lbs_lowsnr_read(struct file *file, char __user *userbuf, |
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size_t count, loff_t *ppos) |
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{ |
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return lbs_threshold_read(TLV_TYPE_SNR_LOW, CMD_SUBSCRIBE_SNR_LOW, |
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file, userbuf, count, ppos); |
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} |
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|
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|
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static ssize_t lbs_lowsnr_write(struct file *file, const char __user *userbuf, |
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size_t count, loff_t *ppos) |
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{ |
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return lbs_threshold_write(TLV_TYPE_SNR_LOW, CMD_SUBSCRIBE_SNR_LOW, |
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file, userbuf, count, ppos); |
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} |
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|
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|
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static ssize_t lbs_failcount_read(struct file *file, char __user *userbuf, |
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size_t count, loff_t *ppos) |
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{ |
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return lbs_threshold_read(TLV_TYPE_FAILCOUNT, CMD_SUBSCRIBE_FAILCOUNT, |
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file, userbuf, count, ppos); |
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} |
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|
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static ssize_t lbs_failcount_write(struct file *file, const char __user *userbuf, |
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size_t count, loff_t *ppos) |
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{ |
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return lbs_threshold_write(TLV_TYPE_FAILCOUNT, CMD_SUBSCRIBE_FAILCOUNT, |
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file, userbuf, count, ppos); |
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} |
|
|
|
|
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static ssize_t lbs_highrssi_read(struct file *file, char __user *userbuf, |
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size_t count, loff_t *ppos) |
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{ |
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return lbs_threshold_read(TLV_TYPE_RSSI_HIGH, CMD_SUBSCRIBE_RSSI_HIGH, |
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file, userbuf, count, ppos); |
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} |
|
|
|
|
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static ssize_t lbs_highrssi_write(struct file *file, const char __user *userbuf, |
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size_t count, loff_t *ppos) |
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{ |
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return lbs_threshold_write(TLV_TYPE_RSSI_HIGH, CMD_SUBSCRIBE_RSSI_HIGH, |
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file, userbuf, count, ppos); |
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} |
|
|
|
|
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static ssize_t lbs_highsnr_read(struct file *file, char __user *userbuf, |
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size_t count, loff_t *ppos) |
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{ |
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return lbs_threshold_read(TLV_TYPE_SNR_HIGH, CMD_SUBSCRIBE_SNR_HIGH, |
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file, userbuf, count, ppos); |
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} |
|
|
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|
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static ssize_t lbs_highsnr_write(struct file *file, const char __user *userbuf, |
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size_t count, loff_t *ppos) |
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{ |
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return lbs_threshold_write(TLV_TYPE_SNR_HIGH, CMD_SUBSCRIBE_SNR_HIGH, |
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file, userbuf, count, ppos); |
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} |
|
|
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static ssize_t lbs_bcnmiss_read(struct file *file, char __user *userbuf, |
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size_t count, loff_t *ppos) |
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{ |
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return lbs_threshold_read(TLV_TYPE_BCNMISS, CMD_SUBSCRIBE_BCNMISS, |
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file, userbuf, count, ppos); |
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} |
|
|
|
|
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static ssize_t lbs_bcnmiss_write(struct file *file, const char __user *userbuf, |
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size_t count, loff_t *ppos) |
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{ |
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return lbs_threshold_write(TLV_TYPE_BCNMISS, CMD_SUBSCRIBE_BCNMISS, |
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file, userbuf, count, ppos); |
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} |
|
|
|
|
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static ssize_t lbs_rdmac_read(struct file *file, char __user *userbuf, |
|
size_t count, loff_t *ppos) |
|
{ |
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struct lbs_private *priv = file->private_data; |
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ssize_t pos = 0; |
|
int ret; |
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unsigned long addr = get_zeroed_page(GFP_KERNEL); |
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char *buf = (char *)addr; |
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u32 val = 0; |
|
|
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if (!buf) |
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return -ENOMEM; |
|
|
|
ret = lbs_get_reg(priv, CMD_MAC_REG_ACCESS, priv->mac_offset, &val); |
|
mdelay(10); |
|
if (!ret) { |
|
pos = snprintf(buf, len, "MAC[0x%x] = 0x%08x\n", |
|
priv->mac_offset, val); |
|
ret = simple_read_from_buffer(userbuf, count, ppos, buf, pos); |
|
} |
|
free_page(addr); |
|
return ret; |
|
} |
|
|
|
static ssize_t lbs_rdmac_write(struct file *file, |
|
const char __user *userbuf, |
|
size_t count, loff_t *ppos) |
|
{ |
|
struct lbs_private *priv = file->private_data; |
|
char *buf; |
|
|
|
buf = memdup_user_nul(userbuf, min(count, len - 1)); |
|
if (IS_ERR(buf)) |
|
return PTR_ERR(buf); |
|
|
|
priv->mac_offset = simple_strtoul(buf, NULL, 16); |
|
kfree(buf); |
|
return count; |
|
} |
|
|
|
static ssize_t lbs_wrmac_write(struct file *file, |
|
const char __user *userbuf, |
|
size_t count, loff_t *ppos) |
|
{ |
|
|
|
struct lbs_private *priv = file->private_data; |
|
ssize_t res; |
|
u32 offset, value; |
|
char *buf; |
|
|
|
buf = memdup_user_nul(userbuf, min(count, len - 1)); |
|
if (IS_ERR(buf)) |
|
return PTR_ERR(buf); |
|
|
|
res = sscanf(buf, "%x %x", &offset, &value); |
|
if (res != 2) { |
|
res = -EFAULT; |
|
goto out_unlock; |
|
} |
|
|
|
res = lbs_set_reg(priv, CMD_MAC_REG_ACCESS, offset, value); |
|
mdelay(10); |
|
|
|
if (!res) |
|
res = count; |
|
out_unlock: |
|
kfree(buf); |
|
return res; |
|
} |
|
|
|
static ssize_t lbs_rdbbp_read(struct file *file, char __user *userbuf, |
|
size_t count, loff_t *ppos) |
|
{ |
|
struct lbs_private *priv = file->private_data; |
|
ssize_t pos = 0; |
|
int ret; |
|
unsigned long addr = get_zeroed_page(GFP_KERNEL); |
|
char *buf = (char *)addr; |
|
u32 val; |
|
|
|
if (!buf) |
|
return -ENOMEM; |
|
|
|
ret = lbs_get_reg(priv, CMD_BBP_REG_ACCESS, priv->bbp_offset, &val); |
|
mdelay(10); |
|
if (!ret) { |
|
pos = snprintf(buf, len, "BBP[0x%x] = 0x%08x\n", |
|
priv->bbp_offset, val); |
|
ret = simple_read_from_buffer(userbuf, count, ppos, buf, pos); |
|
} |
|
free_page(addr); |
|
|
|
return ret; |
|
} |
|
|
|
static ssize_t lbs_rdbbp_write(struct file *file, |
|
const char __user *userbuf, |
|
size_t count, loff_t *ppos) |
|
{ |
|
struct lbs_private *priv = file->private_data; |
|
char *buf; |
|
|
|
buf = memdup_user_nul(userbuf, min(count, len - 1)); |
|
if (IS_ERR(buf)) |
|
return PTR_ERR(buf); |
|
|
|
priv->bbp_offset = simple_strtoul(buf, NULL, 16); |
|
kfree(buf); |
|
|
|
return count; |
|
} |
|
|
|
static ssize_t lbs_wrbbp_write(struct file *file, |
|
const char __user *userbuf, |
|
size_t count, loff_t *ppos) |
|
{ |
|
|
|
struct lbs_private *priv = file->private_data; |
|
ssize_t res; |
|
u32 offset, value; |
|
char *buf; |
|
|
|
buf = memdup_user_nul(userbuf, min(count, len - 1)); |
|
if (IS_ERR(buf)) |
|
return PTR_ERR(buf); |
|
|
|
res = sscanf(buf, "%x %x", &offset, &value); |
|
if (res != 2) { |
|
res = -EFAULT; |
|
goto out_unlock; |
|
} |
|
|
|
res = lbs_set_reg(priv, CMD_BBP_REG_ACCESS, offset, value); |
|
mdelay(10); |
|
|
|
if (!res) |
|
res = count; |
|
out_unlock: |
|
kfree(buf); |
|
return res; |
|
} |
|
|
|
static ssize_t lbs_rdrf_read(struct file *file, char __user *userbuf, |
|
size_t count, loff_t *ppos) |
|
{ |
|
struct lbs_private *priv = file->private_data; |
|
ssize_t pos = 0; |
|
int ret; |
|
unsigned long addr = get_zeroed_page(GFP_KERNEL); |
|
char *buf = (char *)addr; |
|
u32 val; |
|
|
|
if (!buf) |
|
return -ENOMEM; |
|
|
|
ret = lbs_get_reg(priv, CMD_RF_REG_ACCESS, priv->rf_offset, &val); |
|
mdelay(10); |
|
if (!ret) { |
|
pos = snprintf(buf, len, "RF[0x%x] = 0x%08x\n", |
|
priv->rf_offset, val); |
|
ret = simple_read_from_buffer(userbuf, count, ppos, buf, pos); |
|
} |
|
free_page(addr); |
|
|
|
return ret; |
|
} |
|
|
|
static ssize_t lbs_rdrf_write(struct file *file, |
|
const char __user *userbuf, |
|
size_t count, loff_t *ppos) |
|
{ |
|
struct lbs_private *priv = file->private_data; |
|
char *buf; |
|
|
|
buf = memdup_user_nul(userbuf, min(count, len - 1)); |
|
if (IS_ERR(buf)) |
|
return PTR_ERR(buf); |
|
|
|
priv->rf_offset = simple_strtoul(buf, NULL, 16); |
|
kfree(buf); |
|
return count; |
|
} |
|
|
|
static ssize_t lbs_wrrf_write(struct file *file, |
|
const char __user *userbuf, |
|
size_t count, loff_t *ppos) |
|
{ |
|
|
|
struct lbs_private *priv = file->private_data; |
|
ssize_t res; |
|
u32 offset, value; |
|
char *buf; |
|
|
|
buf = memdup_user_nul(userbuf, min(count, len - 1)); |
|
if (IS_ERR(buf)) |
|
return PTR_ERR(buf); |
|
|
|
res = sscanf(buf, "%x %x", &offset, &value); |
|
if (res != 2) { |
|
res = -EFAULT; |
|
goto out_unlock; |
|
} |
|
|
|
res = lbs_set_reg(priv, CMD_RF_REG_ACCESS, offset, value); |
|
mdelay(10); |
|
|
|
if (!res) |
|
res = count; |
|
out_unlock: |
|
kfree(buf); |
|
return res; |
|
} |
|
|
|
#define FOPS(fread, fwrite) { \ |
|
.owner = THIS_MODULE, \ |
|
.open = simple_open, \ |
|
.read = (fread), \ |
|
.write = (fwrite), \ |
|
.llseek = generic_file_llseek, \ |
|
} |
|
|
|
struct lbs_debugfs_files { |
|
const char *name; |
|
umode_t perm; |
|
struct file_operations fops; |
|
}; |
|
|
|
static const struct lbs_debugfs_files debugfs_files[] = { |
|
{ "info", 0444, FOPS(lbs_dev_info, write_file_dummy), }, |
|
{ "sleepparams", 0644, FOPS(lbs_sleepparams_read, |
|
lbs_sleepparams_write), }, |
|
{ "hostsleep", 0644, FOPS(lbs_host_sleep_read, |
|
lbs_host_sleep_write), }, |
|
}; |
|
|
|
static const struct lbs_debugfs_files debugfs_events_files[] = { |
|
{"low_rssi", 0644, FOPS(lbs_lowrssi_read, |
|
lbs_lowrssi_write), }, |
|
{"low_snr", 0644, FOPS(lbs_lowsnr_read, |
|
lbs_lowsnr_write), }, |
|
{"failure_count", 0644, FOPS(lbs_failcount_read, |
|
lbs_failcount_write), }, |
|
{"beacon_missed", 0644, FOPS(lbs_bcnmiss_read, |
|
lbs_bcnmiss_write), }, |
|
{"high_rssi", 0644, FOPS(lbs_highrssi_read, |
|
lbs_highrssi_write), }, |
|
{"high_snr", 0644, FOPS(lbs_highsnr_read, |
|
lbs_highsnr_write), }, |
|
}; |
|
|
|
static const struct lbs_debugfs_files debugfs_regs_files[] = { |
|
{"rdmac", 0644, FOPS(lbs_rdmac_read, lbs_rdmac_write), }, |
|
{"wrmac", 0600, FOPS(NULL, lbs_wrmac_write), }, |
|
{"rdbbp", 0644, FOPS(lbs_rdbbp_read, lbs_rdbbp_write), }, |
|
{"wrbbp", 0600, FOPS(NULL, lbs_wrbbp_write), }, |
|
{"rdrf", 0644, FOPS(lbs_rdrf_read, lbs_rdrf_write), }, |
|
{"wrrf", 0600, FOPS(NULL, lbs_wrrf_write), }, |
|
}; |
|
|
|
void lbs_debugfs_init(void) |
|
{ |
|
if (!lbs_dir) |
|
lbs_dir = debugfs_create_dir("lbs_wireless", NULL); |
|
} |
|
|
|
void lbs_debugfs_remove(void) |
|
{ |
|
debugfs_remove(lbs_dir); |
|
} |
|
|
|
void lbs_debugfs_init_one(struct lbs_private *priv, struct net_device *dev) |
|
{ |
|
int i; |
|
const struct lbs_debugfs_files *files; |
|
if (!lbs_dir) |
|
goto exit; |
|
|
|
priv->debugfs_dir = debugfs_create_dir(dev->name, lbs_dir); |
|
|
|
for (i=0; i<ARRAY_SIZE(debugfs_files); i++) { |
|
files = &debugfs_files[i]; |
|
priv->debugfs_files[i] = debugfs_create_file(files->name, |
|
files->perm, |
|
priv->debugfs_dir, |
|
priv, |
|
&files->fops); |
|
} |
|
|
|
priv->events_dir = debugfs_create_dir("subscribed_events", priv->debugfs_dir); |
|
|
|
for (i=0; i<ARRAY_SIZE(debugfs_events_files); i++) { |
|
files = &debugfs_events_files[i]; |
|
priv->debugfs_events_files[i] = debugfs_create_file(files->name, |
|
files->perm, |
|
priv->events_dir, |
|
priv, |
|
&files->fops); |
|
} |
|
|
|
priv->regs_dir = debugfs_create_dir("registers", priv->debugfs_dir); |
|
|
|
for (i=0; i<ARRAY_SIZE(debugfs_regs_files); i++) { |
|
files = &debugfs_regs_files[i]; |
|
priv->debugfs_regs_files[i] = debugfs_create_file(files->name, |
|
files->perm, |
|
priv->regs_dir, |
|
priv, |
|
&files->fops); |
|
} |
|
|
|
#ifdef PROC_DEBUG |
|
lbs_debug_init(priv); |
|
#endif |
|
exit: |
|
return; |
|
} |
|
|
|
void lbs_debugfs_remove_one(struct lbs_private *priv) |
|
{ |
|
int i; |
|
|
|
for(i=0; i<ARRAY_SIZE(debugfs_regs_files); i++) |
|
debugfs_remove(priv->debugfs_regs_files[i]); |
|
|
|
debugfs_remove(priv->regs_dir); |
|
|
|
for(i=0; i<ARRAY_SIZE(debugfs_events_files); i++) |
|
debugfs_remove(priv->debugfs_events_files[i]); |
|
|
|
debugfs_remove(priv->events_dir); |
|
#ifdef PROC_DEBUG |
|
debugfs_remove(priv->debugfs_debug); |
|
#endif |
|
for(i=0; i<ARRAY_SIZE(debugfs_files); i++) |
|
debugfs_remove(priv->debugfs_files[i]); |
|
debugfs_remove(priv->debugfs_dir); |
|
} |
|
|
|
|
|
|
|
/* debug entry */ |
|
|
|
#ifdef PROC_DEBUG |
|
|
|
#define item_size(n) (sizeof_field(struct lbs_private, n)) |
|
#define item_addr(n) (offsetof(struct lbs_private, n)) |
|
|
|
|
|
struct debug_data { |
|
char name[32]; |
|
u32 size; |
|
size_t addr; |
|
}; |
|
|
|
/* To debug any member of struct lbs_private, simply add one line here. |
|
*/ |
|
static struct debug_data items[] = { |
|
{"psmode", item_size(psmode), item_addr(psmode)}, |
|
{"psstate", item_size(psstate), item_addr(psstate)}, |
|
}; |
|
|
|
static int num_of_items = ARRAY_SIZE(items); |
|
|
|
/** |
|
* lbs_debugfs_read - proc read function |
|
* |
|
* @file: file to read |
|
* @userbuf: pointer to buffer |
|
* @count: number of bytes to read |
|
* @ppos: read data starting position |
|
* |
|
* returns: amount of data read or negative error code |
|
*/ |
|
static ssize_t lbs_debugfs_read(struct file *file, char __user *userbuf, |
|
size_t count, loff_t *ppos) |
|
{ |
|
int val = 0; |
|
size_t pos = 0; |
|
ssize_t res; |
|
char *p; |
|
int i; |
|
struct debug_data *d; |
|
unsigned long addr = get_zeroed_page(GFP_KERNEL); |
|
char *buf = (char *)addr; |
|
if (!buf) |
|
return -ENOMEM; |
|
|
|
p = buf; |
|
|
|
d = file->private_data; |
|
|
|
for (i = 0; i < num_of_items; i++) { |
|
if (d[i].size == 1) |
|
val = *((u8 *) d[i].addr); |
|
else if (d[i].size == 2) |
|
val = *((u16 *) d[i].addr); |
|
else if (d[i].size == 4) |
|
val = *((u32 *) d[i].addr); |
|
else if (d[i].size == 8) |
|
val = *((u64 *) d[i].addr); |
|
|
|
pos += sprintf(p + pos, "%s=%d\n", d[i].name, val); |
|
} |
|
|
|
res = simple_read_from_buffer(userbuf, count, ppos, p, pos); |
|
|
|
free_page(addr); |
|
return res; |
|
} |
|
|
|
/** |
|
* lbs_debugfs_write - proc write function |
|
* |
|
* @f: file pointer |
|
* @buf: pointer to data buffer |
|
* @cnt: data number to write |
|
* @ppos: file position |
|
* |
|
* returns: amount of data written |
|
*/ |
|
static ssize_t lbs_debugfs_write(struct file *f, const char __user *buf, |
|
size_t cnt, loff_t *ppos) |
|
{ |
|
int r, i; |
|
char *pdata; |
|
char *p; |
|
char *p0; |
|
char *p1; |
|
char *p2; |
|
struct debug_data *d = f->private_data; |
|
|
|
if (cnt == 0) |
|
return 0; |
|
|
|
pdata = memdup_user_nul(buf, cnt); |
|
if (IS_ERR(pdata)) |
|
return PTR_ERR(pdata); |
|
|
|
p0 = pdata; |
|
for (i = 0; i < num_of_items; i++) { |
|
do { |
|
p = strstr(p0, d[i].name); |
|
if (p == NULL) |
|
break; |
|
p1 = strchr(p, '\n'); |
|
if (p1 == NULL) |
|
break; |
|
p0 = p1++; |
|
p2 = strchr(p, '='); |
|
if (!p2) |
|
break; |
|
p2++; |
|
r = simple_strtoul(p2, NULL, 0); |
|
if (d[i].size == 1) |
|
*((u8 *) d[i].addr) = (u8) r; |
|
else if (d[i].size == 2) |
|
*((u16 *) d[i].addr) = (u16) r; |
|
else if (d[i].size == 4) |
|
*((u32 *) d[i].addr) = (u32) r; |
|
else if (d[i].size == 8) |
|
*((u64 *) d[i].addr) = (u64) r; |
|
break; |
|
} while (1); |
|
} |
|
kfree(pdata); |
|
|
|
return (ssize_t)cnt; |
|
} |
|
|
|
static const struct file_operations lbs_debug_fops = { |
|
.owner = THIS_MODULE, |
|
.open = simple_open, |
|
.write = lbs_debugfs_write, |
|
.read = lbs_debugfs_read, |
|
.llseek = default_llseek, |
|
}; |
|
|
|
/** |
|
* lbs_debug_init - create debug proc file |
|
* |
|
* @priv: pointer to &struct lbs_private |
|
* |
|
* returns: N/A |
|
*/ |
|
static void lbs_debug_init(struct lbs_private *priv) |
|
{ |
|
int i; |
|
|
|
if (!priv->debugfs_dir) |
|
return; |
|
|
|
for (i = 0; i < num_of_items; i++) |
|
items[i].addr += (size_t) priv; |
|
|
|
priv->debugfs_debug = debugfs_create_file("debug", 0644, |
|
priv->debugfs_dir, &items[0], |
|
&lbs_debug_fops); |
|
} |
|
#endif
|
|
|