blob: dba301378b7faca077e3f49f90873ce79c028b2d [file] [log] [blame]
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2012 - 2018 Microchip Technology Inc., and its subsidiaries.
* All rights reserved.
*/
#include <linux/bitfield.h>
#include "wlan_if.h"
#include "wlan.h"
#include "wlan_cfg.h"
#include "netdev.h"
enum cfg_cmd_type {
CFG_BYTE_CMD = 0,
CFG_HWORD_CMD = 1,
CFG_WORD_CMD = 2,
CFG_STR_CMD = 3,
CFG_BIN_CMD = 4
};
static const struct wilc_cfg_byte g_cfg_byte[] = {
{WID_STATUS, 0},
{WID_RSSI, 0},
{WID_LINKSPEED, 0},
{WID_WOWLAN_TRIGGER, 0},
{WID_NIL, 0}
};
static const struct wilc_cfg_hword g_cfg_hword[] = {
{WID_NIL, 0}
};
static const struct wilc_cfg_word g_cfg_word[] = {
{WID_FAILED_COUNT, 0},
{WID_RECEIVED_FRAGMENT_COUNT, 0},
{WID_SUCCESS_FRAME_COUNT, 0},
{WID_GET_INACTIVE_TIME, 0},
{WID_NIL, 0}
};
static const struct wilc_cfg_str g_cfg_str[] = {
{WID_FIRMWARE_VERSION, NULL},
{WID_MAC_ADDR, NULL},
{WID_ASSOC_RES_INFO, NULL},
{WID_NIL, NULL}
};
#define WILC_RESP_MSG_TYPE_CONFIG_REPLY 'R'
#define WILC_RESP_MSG_TYPE_STATUS_INFO 'I'
#define WILC_RESP_MSG_TYPE_NETWORK_INFO 'N'
#define WILC_RESP_MSG_TYPE_SCAN_COMPLETE 'S'
/********************************************
*
* Configuration Functions
*
********************************************/
static int wilc_wlan_cfg_set_byte(u8 *frame, u32 offset, u16 id, u8 val8)
{
if ((offset + 4) >= WILC_MAX_CFG_FRAME_SIZE)
return 0;
put_unaligned_le16(id, &frame[offset]);
put_unaligned_le16(1, &frame[offset + 2]);
frame[offset + 4] = val8;
return 5;
}
static int wilc_wlan_cfg_set_hword(u8 *frame, u32 offset, u16 id, u16 val16)
{
if ((offset + 5) >= WILC_MAX_CFG_FRAME_SIZE)
return 0;
put_unaligned_le16(id, &frame[offset]);
put_unaligned_le16(2, &frame[offset + 2]);
put_unaligned_le16(val16, &frame[offset + 4]);
return 6;
}
static int wilc_wlan_cfg_set_word(u8 *frame, u32 offset, u16 id, u32 val32)
{
if ((offset + 7) >= WILC_MAX_CFG_FRAME_SIZE)
return 0;
put_unaligned_le16(id, &frame[offset]);
put_unaligned_le16(4, &frame[offset + 2]);
put_unaligned_le32(val32, &frame[offset + 4]);
return 8;
}
static int wilc_wlan_cfg_set_str(u8 *frame, u32 offset, u16 id, u8 *str,
u32 size)
{
if ((offset + size + 4) >= WILC_MAX_CFG_FRAME_SIZE)
return 0;
put_unaligned_le16(id, &frame[offset]);
put_unaligned_le16(size, &frame[offset + 2]);
if (str && size != 0)
memcpy(&frame[offset + 4], str, size);
return (size + 4);
}
static int wilc_wlan_cfg_set_bin(u8 *frame, u32 offset, u16 id, u8 *b, u32 size)
{
u32 i;
u8 checksum = 0;
if ((offset + size + 5) >= WILC_MAX_CFG_FRAME_SIZE)
return 0;
put_unaligned_le16(id, &frame[offset]);
put_unaligned_le16(size, &frame[offset + 2]);
if ((b) && size != 0) {
memcpy(&frame[offset + 4], b, size);
for (i = 0; i < size; i++)
checksum += frame[offset + i + 4];
}
frame[offset + size + 4] = checksum;
return (size + 5);
}
/********************************************
*
* Configuration Response Functions
*
********************************************/
static void wilc_wlan_parse_response_frame(struct wilc *wl, u8 *info, int size)
{
u16 wid;
u32 len = 0, i = 0;
struct wilc_cfg *cfg = &wl->cfg;
while (size > 0) {
i = 0;
wid = get_unaligned_le16(info);
switch (FIELD_GET(WILC_WID_TYPE, wid)) {
case WID_CHAR:
while (cfg->b[i].id != WID_NIL && cfg->b[i].id != wid)
i++;
if (cfg->b[i].id == wid)
cfg->b[i].val = info[4];
len = 3;
break;
case WID_SHORT:
while (cfg->hw[i].id != WID_NIL && cfg->hw[i].id != wid)
i++;
if (cfg->hw[i].id == wid)
cfg->hw[i].val = get_unaligned_le16(&info[4]);
len = 4;
break;
case WID_INT:
while (cfg->w[i].id != WID_NIL && cfg->w[i].id != wid)
i++;
if (cfg->w[i].id == wid)
cfg->w[i].val = get_unaligned_le32(&info[4]);
len = 6;
break;
case WID_STR:
while (cfg->s[i].id != WID_NIL && cfg->s[i].id != wid)
i++;
if (cfg->s[i].id == wid)
memcpy(cfg->s[i].str, &info[2], info[2] + 2);
len = 2 + info[2];
break;
default:
break;
}
size -= (2 + len);
info += (2 + len);
}
}
static void wilc_wlan_parse_info_frame(struct wilc *wl, u8 *info)
{
u32 wid, len;
wid = get_unaligned_le16(info);
len = info[2];
if (len == 1 && wid == WID_STATUS) {
int i = 0;
while (wl->cfg.b[i].id != WID_NIL &&
wl->cfg.b[i].id != wid)
i++;
if (wl->cfg.b[i].id == wid)
wl->cfg.b[i].val = info[3];
}
}
/********************************************
*
* Configuration Exported Functions
*
********************************************/
int wilc_wlan_cfg_set_wid(u8 *frame, u32 offset, u16 id, u8 *buf, int size)
{
u8 type = FIELD_GET(WILC_WID_TYPE, id);
int ret = 0;
switch (type) {
case CFG_BYTE_CMD:
if (size >= 1)
ret = wilc_wlan_cfg_set_byte(frame, offset, id, *buf);
break;
case CFG_HWORD_CMD:
if (size >= 2)
ret = wilc_wlan_cfg_set_hword(frame, offset, id,
*((u16 *)buf));
break;
case CFG_WORD_CMD:
if (size >= 4)
ret = wilc_wlan_cfg_set_word(frame, offset, id,
*((u32 *)buf));
break;
case CFG_STR_CMD:
ret = wilc_wlan_cfg_set_str(frame, offset, id, buf, size);
break;
case CFG_BIN_CMD:
ret = wilc_wlan_cfg_set_bin(frame, offset, id, buf, size);
break;
}
return ret;
}
int wilc_wlan_cfg_get_wid(u8 *frame, u32 offset, u16 id)
{
if ((offset + 2) >= WILC_MAX_CFG_FRAME_SIZE)
return 0;
put_unaligned_le16(id, &frame[offset]);
return 2;
}
int wilc_wlan_cfg_get_val(struct wilc *wl, u16 wid, u8 *buffer,
u32 buffer_size)
{
u8 type = FIELD_GET(WILC_WID_TYPE, wid);
int i, ret = 0;
struct wilc_cfg *cfg = &wl->cfg;
i = 0;
if (type == CFG_BYTE_CMD) {
while (cfg->b[i].id != WID_NIL && cfg->b[i].id != wid)
i++;
if (cfg->b[i].id == wid) {
memcpy(buffer, &cfg->b[i].val, 1);
ret = 1;
}
} else if (type == CFG_HWORD_CMD) {
while (cfg->hw[i].id != WID_NIL && cfg->hw[i].id != wid)
i++;
if (cfg->hw[i].id == wid) {
memcpy(buffer, &cfg->hw[i].val, 2);
ret = 2;
}
} else if (type == CFG_WORD_CMD) {
while (cfg->w[i].id != WID_NIL && cfg->w[i].id != wid)
i++;
if (cfg->w[i].id == wid) {
memcpy(buffer, &cfg->w[i].val, 4);
ret = 4;
}
} else if (type == CFG_STR_CMD) {
while (cfg->s[i].id != WID_NIL && cfg->s[i].id != wid)
i++;
if (cfg->s[i].id == wid) {
u16 size = get_unaligned_le16(cfg->s[i].str);
if (buffer_size >= size) {
memcpy(buffer, &cfg->s[i].str[2], size);
ret = size;
}
}
}
return ret;
}
void wilc_wlan_cfg_indicate_rx(struct wilc *wilc, u8 *frame, int size,
struct wilc_cfg_rsp *rsp)
{
u8 msg_type;
u8 msg_id;
msg_type = frame[0];
msg_id = frame[1]; /* seq no */
frame += 4;
size -= 4;
rsp->type = 0;
switch (msg_type) {
case WILC_RESP_MSG_TYPE_CONFIG_REPLY:
wilc_wlan_parse_response_frame(wilc, frame, size);
rsp->type = WILC_CFG_RSP;
rsp->seq_no = msg_id;
break;
case WILC_RESP_MSG_TYPE_STATUS_INFO:
wilc_wlan_parse_info_frame(wilc, frame);
rsp->type = WILC_CFG_RSP_STATUS;
rsp->seq_no = msg_id;
/* call host interface info parse as well */
wilc_gnrl_async_info_received(wilc, frame - 4, size + 4);
break;
case WILC_RESP_MSG_TYPE_NETWORK_INFO:
wilc_network_info_received(wilc, frame - 4, size + 4);
break;
case WILC_RESP_MSG_TYPE_SCAN_COMPLETE:
wilc_scan_complete_received(wilc, frame - 4, size + 4);
break;
default:
rsp->seq_no = msg_id;
break;
}
}
int wilc_wlan_cfg_init(struct wilc *wl)
{
struct wilc_cfg_str_vals *str_vals;
int i = 0;
wl->cfg.b = kmemdup(g_cfg_byte, sizeof(g_cfg_byte), GFP_KERNEL);
if (!wl->cfg.b)
return -ENOMEM;
wl->cfg.hw = kmemdup(g_cfg_hword, sizeof(g_cfg_hword), GFP_KERNEL);
if (!wl->cfg.hw)
goto out_b;
wl->cfg.w = kmemdup(g_cfg_word, sizeof(g_cfg_word), GFP_KERNEL);
if (!wl->cfg.w)
goto out_hw;
wl->cfg.s = kmemdup(g_cfg_str, sizeof(g_cfg_str), GFP_KERNEL);
if (!wl->cfg.s)
goto out_w;
str_vals = kzalloc(sizeof(*str_vals), GFP_KERNEL);
if (!str_vals)
goto out_s;
wl->cfg.str_vals = str_vals;
/* store the string cfg parameters */
wl->cfg.s[i].id = WID_FIRMWARE_VERSION;
wl->cfg.s[i].str = str_vals->firmware_version;
i++;
wl->cfg.s[i].id = WID_MAC_ADDR;
wl->cfg.s[i].str = str_vals->mac_address;
i++;
wl->cfg.s[i].id = WID_ASSOC_RES_INFO;
wl->cfg.s[i].str = str_vals->assoc_rsp;
i++;
wl->cfg.s[i].id = WID_NIL;
wl->cfg.s[i].str = NULL;
return 0;
out_s:
kfree(wl->cfg.s);
out_w:
kfree(wl->cfg.w);
out_hw:
kfree(wl->cfg.hw);
out_b:
kfree(wl->cfg.b);
return -ENOMEM;
}
void wilc_wlan_cfg_deinit(struct wilc *wl)
{
kfree(wl->cfg.b);
kfree(wl->cfg.hw);
kfree(wl->cfg.w);
kfree(wl->cfg.s);
kfree(wl->cfg.str_vals);
}