blob: c2389695fe20403aab08939a338dc1c7b5f4dc80 [file] [log] [blame]
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2012 - 2018 Microchip Technology Inc., and its subsidiaries.
* All rights reserved.
*/
#include <linux/if_ether.h>
#include <linux/ip.h>
#include "wilc_wfi_netdevice.h"
#include "wilc_wlan_cfg.h"
static inline bool is_wilc1000(u32 id)
{
return ((id & 0xfffff000) == 0x100000 ? true : false);
}
static inline void acquire_bus(struct wilc *wilc, enum bus_acquire acquire)
{
mutex_lock(&wilc->hif_cs);
if (acquire == WILC_BUS_ACQUIRE_AND_WAKEUP)
chip_wakeup(wilc);
}
static inline void release_bus(struct wilc *wilc, enum bus_release release)
{
if (release == WILC_BUS_RELEASE_ALLOW_SLEEP)
chip_allow_sleep(wilc);
mutex_unlock(&wilc->hif_cs);
}
static void wilc_wlan_txq_remove(struct wilc *wilc, struct txq_entry_t *tqe)
{
list_del(&tqe->list);
wilc->txq_entries -= 1;
}
static struct txq_entry_t *
wilc_wlan_txq_remove_from_head(struct net_device *dev)
{
struct txq_entry_t *tqe = NULL;
unsigned long flags;
struct wilc_vif *vif = netdev_priv(dev);
struct wilc *wilc = vif->wilc;
spin_lock_irqsave(&wilc->txq_spinlock, flags);
if (!list_empty(&wilc->txq_head.list)) {
tqe = list_first_entry(&wilc->txq_head.list, struct txq_entry_t,
list);
list_del(&tqe->list);
wilc->txq_entries -= 1;
}
spin_unlock_irqrestore(&wilc->txq_spinlock, flags);
return tqe;
}
static void wilc_wlan_txq_add_to_tail(struct net_device *dev,
struct txq_entry_t *tqe)
{
unsigned long flags;
struct wilc_vif *vif = netdev_priv(dev);
struct wilc *wilc = vif->wilc;
spin_lock_irqsave(&wilc->txq_spinlock, flags);
list_add_tail(&tqe->list, &wilc->txq_head.list);
wilc->txq_entries += 1;
spin_unlock_irqrestore(&wilc->txq_spinlock, flags);
complete(&wilc->txq_event);
}
static void wilc_wlan_txq_add_to_head(struct wilc_vif *vif,
struct txq_entry_t *tqe)
{
unsigned long flags;
struct wilc *wilc = vif->wilc;
mutex_lock(&wilc->txq_add_to_head_cs);
spin_lock_irqsave(&wilc->txq_spinlock, flags);
list_add(&tqe->list, &wilc->txq_head.list);
wilc->txq_entries += 1;
spin_unlock_irqrestore(&wilc->txq_spinlock, flags);
mutex_unlock(&wilc->txq_add_to_head_cs);
complete(&wilc->txq_event);
}
#define NOT_TCP_ACK (-1)
static inline void add_tcp_session(struct wilc_vif *vif, u32 src_prt,
u32 dst_prt, u32 seq)
{
struct tcp_ack_filter *f = &vif->ack_filter;
if (f->tcp_session < 2 * MAX_TCP_SESSION) {
f->ack_session_info[f->tcp_session].seq_num = seq;
f->ack_session_info[f->tcp_session].bigger_ack_num = 0;
f->ack_session_info[f->tcp_session].src_port = src_prt;
f->ack_session_info[f->tcp_session].dst_port = dst_prt;
f->tcp_session++;
}
}
static inline void update_tcp_session(struct wilc_vif *vif, u32 index, u32 ack)
{
struct tcp_ack_filter *f = &vif->ack_filter;
if (index < 2 * MAX_TCP_SESSION &&
ack > f->ack_session_info[index].bigger_ack_num)
f->ack_session_info[index].bigger_ack_num = ack;
}
static inline void add_tcp_pending_ack(struct wilc_vif *vif, u32 ack,
u32 session_index,
struct txq_entry_t *txqe)
{
struct tcp_ack_filter *f = &vif->ack_filter;
u32 i = f->pending_base + f->pending_acks_idx;
if (i < MAX_PENDING_ACKS) {
f->pending_acks[i].ack_num = ack;
f->pending_acks[i].txqe = txqe;
f->pending_acks[i].session_index = session_index;
txqe->ack_idx = i;
f->pending_acks_idx++;
}
}
static inline void tcp_process(struct net_device *dev, struct txq_entry_t *tqe)
{
void *buffer = tqe->buffer;
const struct ethhdr *eth_hdr_ptr = buffer;
int i;
unsigned long flags;
struct wilc_vif *vif = netdev_priv(dev);
struct wilc *wilc = vif->wilc;
struct tcp_ack_filter *f = &vif->ack_filter;
const struct iphdr *ip_hdr_ptr;
const struct tcphdr *tcp_hdr_ptr;
u32 ihl, total_length, data_offset;
spin_lock_irqsave(&wilc->txq_spinlock, flags);
if (eth_hdr_ptr->h_proto != htons(ETH_P_IP))
goto out;
ip_hdr_ptr = buffer + ETH_HLEN;
if (ip_hdr_ptr->protocol != IPPROTO_TCP)
goto out;
ihl = ip_hdr_ptr->ihl << 2;
tcp_hdr_ptr = buffer + ETH_HLEN + ihl;
total_length = ntohs(ip_hdr_ptr->tot_len);
data_offset = tcp_hdr_ptr->doff << 2;
if (total_length == (ihl + data_offset)) {
u32 seq_no, ack_no;
seq_no = ntohl(tcp_hdr_ptr->seq);
ack_no = ntohl(tcp_hdr_ptr->ack_seq);
for (i = 0; i < f->tcp_session; i++) {
u32 j = f->ack_session_info[i].seq_num;
if (i < 2 * MAX_TCP_SESSION &&
j == seq_no) {
update_tcp_session(vif, i, ack_no);
break;
}
}
if (i == f->tcp_session)
add_tcp_session(vif, 0, 0, seq_no);
add_tcp_pending_ack(vif, ack_no, i, tqe);
}
out:
spin_unlock_irqrestore(&wilc->txq_spinlock, flags);
}
static void wilc_wlan_txq_filter_dup_tcp_ack(struct net_device *dev)
{
struct wilc_vif *vif = netdev_priv(dev);
struct wilc *wilc = vif->wilc;
struct tcp_ack_filter *f = &vif->ack_filter;
u32 i = 0;
u32 dropped = 0;
unsigned long flags;
spin_lock_irqsave(&wilc->txq_spinlock, flags);
for (i = f->pending_base;
i < (f->pending_base + f->pending_acks_idx); i++) {
u32 index;
u32 bigger_ack_num;
if (i >= MAX_PENDING_ACKS)
break;
index = f->pending_acks[i].session_index;
if (index >= 2 * MAX_TCP_SESSION)
break;
bigger_ack_num = f->ack_session_info[index].bigger_ack_num;
if (f->pending_acks[i].ack_num < bigger_ack_num) {
struct txq_entry_t *tqe;
tqe = f->pending_acks[i].txqe;
if (tqe) {
wilc_wlan_txq_remove(wilc, tqe);
tqe->status = 1;
if (tqe->tx_complete_func)
tqe->tx_complete_func(tqe->priv,
tqe->status);
kfree(tqe);
dropped++;
}
}
}
f->pending_acks_idx = 0;
f->tcp_session = 0;
if (f->pending_base == 0)
f->pending_base = MAX_TCP_SESSION;
else
f->pending_base = 0;
spin_unlock_irqrestore(&wilc->txq_spinlock, flags);
while (dropped > 0) {
wait_for_completion_timeout(&wilc->txq_event,
msecs_to_jiffies(1));
dropped--;
}
}
void wilc_enable_tcp_ack_filter(struct wilc_vif *vif, bool value)
{
vif->ack_filter.enabled = value;
}
static int wilc_wlan_txq_add_cfg_pkt(struct wilc_vif *vif, u8 *buffer,
u32 buffer_size)
{
struct txq_entry_t *tqe;
struct wilc *wilc = vif->wilc;
netdev_dbg(vif->ndev, "Adding config packet ...\n");
if (wilc->quit) {
netdev_dbg(vif->ndev, "Return due to clear function\n");
complete(&wilc->cfg_event);
return 0;
}
tqe = kmalloc(sizeof(*tqe), GFP_ATOMIC);
if (!tqe)
return 0;
tqe->type = WILC_CFG_PKT;
tqe->buffer = buffer;
tqe->buffer_size = buffer_size;
tqe->tx_complete_func = NULL;
tqe->priv = NULL;
tqe->ack_idx = NOT_TCP_ACK;
wilc_wlan_txq_add_to_head(vif, tqe);
return 1;
}
int wilc_wlan_txq_add_net_pkt(struct net_device *dev, void *priv, u8 *buffer,
u32 buffer_size,
void (*tx_complete_fn)(void *, int))
{
struct txq_entry_t *tqe;
struct wilc_vif *vif = netdev_priv(dev);
struct wilc *wilc;
wilc = vif->wilc;
if (wilc->quit)
return 0;
tqe = kmalloc(sizeof(*tqe), GFP_ATOMIC);
if (!tqe)
return 0;
tqe->type = WILC_NET_PKT;
tqe->buffer = buffer;
tqe->buffer_size = buffer_size;
tqe->tx_complete_func = tx_complete_fn;
tqe->priv = priv;
tqe->ack_idx = NOT_TCP_ACK;
if (vif->ack_filter.enabled)
tcp_process(dev, tqe);
wilc_wlan_txq_add_to_tail(dev, tqe);
return wilc->txq_entries;
}
int wilc_wlan_txq_add_mgmt_pkt(struct net_device *dev, void *priv, u8 *buffer,
u32 buffer_size,
void (*tx_complete_fn)(void *, int))
{
struct txq_entry_t *tqe;
struct wilc_vif *vif = netdev_priv(dev);
struct wilc *wilc;
wilc = vif->wilc;
if (wilc->quit)
return 0;
tqe = kmalloc(sizeof(*tqe), GFP_KERNEL);
if (!tqe)
return 0;
tqe->type = WILC_MGMT_PKT;
tqe->buffer = buffer;
tqe->buffer_size = buffer_size;
tqe->tx_complete_func = tx_complete_fn;
tqe->priv = priv;
tqe->ack_idx = NOT_TCP_ACK;
wilc_wlan_txq_add_to_tail(dev, tqe);
return 1;
}
static struct txq_entry_t *wilc_wlan_txq_get_first(struct wilc *wilc)
{
struct txq_entry_t *tqe = NULL;
unsigned long flags;
spin_lock_irqsave(&wilc->txq_spinlock, flags);
if (!list_empty(&wilc->txq_head.list))
tqe = list_first_entry(&wilc->txq_head.list, struct txq_entry_t,
list);
spin_unlock_irqrestore(&wilc->txq_spinlock, flags);
return tqe;
}
static struct txq_entry_t *wilc_wlan_txq_get_next(struct wilc *wilc,
struct txq_entry_t *tqe)
{
unsigned long flags;
spin_lock_irqsave(&wilc->txq_spinlock, flags);
if (!list_is_last(&tqe->list, &wilc->txq_head.list))
tqe = list_next_entry(tqe, list);
else
tqe = NULL;
spin_unlock_irqrestore(&wilc->txq_spinlock, flags);
return tqe;
}
static void wilc_wlan_rxq_add(struct wilc *wilc, struct rxq_entry_t *rqe)
{
if (wilc->quit)
return;
mutex_lock(&wilc->rxq_cs);
list_add_tail(&rqe->list, &wilc->rxq_head.list);
mutex_unlock(&wilc->rxq_cs);
}
static struct rxq_entry_t *wilc_wlan_rxq_remove(struct wilc *wilc)
{
struct rxq_entry_t *rqe = NULL;
mutex_lock(&wilc->rxq_cs);
if (!list_empty(&wilc->rxq_head.list)) {
rqe = list_first_entry(&wilc->rxq_head.list, struct rxq_entry_t,
list);
list_del(&rqe->list);
}
mutex_unlock(&wilc->rxq_cs);
return rqe;
}
void chip_allow_sleep(struct wilc *wilc)
{
u32 reg = 0;
wilc->hif_func->hif_read_reg(wilc, 0xf0, &reg);
wilc->hif_func->hif_write_reg(wilc, 0xf0, reg & ~BIT(0));
wilc->hif_func->hif_write_reg(wilc, 0xfa, 0);
}
EXPORT_SYMBOL_GPL(chip_allow_sleep);
void chip_wakeup(struct wilc *wilc)
{
u32 reg, clk_status_reg;
if ((wilc->io_type & 0x1) == WILC_HIF_SPI) {
do {
wilc->hif_func->hif_read_reg(wilc, 1, &reg);
wilc->hif_func->hif_write_reg(wilc, 1, reg | BIT(1));
wilc->hif_func->hif_write_reg(wilc, 1, reg & ~BIT(1));
do {
usleep_range(2 * 1000, 2 * 1000);
wilc_get_chipid(wilc, true);
} while (wilc_get_chipid(wilc, true) == 0);
} while (wilc_get_chipid(wilc, true) == 0);
} else if ((wilc->io_type & 0x1) == WILC_HIF_SDIO) {
wilc->hif_func->hif_write_reg(wilc, 0xfa, 1);
usleep_range(200, 400);
wilc->hif_func->hif_read_reg(wilc, 0xf0, &reg);
do {
wilc->hif_func->hif_write_reg(wilc, 0xf0,
reg | BIT(0));
wilc->hif_func->hif_read_reg(wilc, 0xf1,
&clk_status_reg);
while ((clk_status_reg & 0x1) == 0) {
usleep_range(2 * 1000, 2 * 1000);
wilc->hif_func->hif_read_reg(wilc, 0xf1,
&clk_status_reg);
}
if ((clk_status_reg & 0x1) == 0) {
wilc->hif_func->hif_write_reg(wilc, 0xf0,
reg & (~BIT(0)));
}
} while ((clk_status_reg & 0x1) == 0);
}
if (wilc->chip_ps_state == WILC_CHIP_SLEEPING_MANUAL) {
if (wilc_get_chipid(wilc, false) < 0x1002b0) {
u32 val32;
wilc->hif_func->hif_read_reg(wilc, 0x1e1c, &val32);
val32 |= BIT(6);
wilc->hif_func->hif_write_reg(wilc, 0x1e1c, val32);
wilc->hif_func->hif_read_reg(wilc, 0x1e9c, &val32);
val32 |= BIT(6);
wilc->hif_func->hif_write_reg(wilc, 0x1e9c, val32);
}
}
wilc->chip_ps_state = WILC_CHIP_WAKEDUP;
}
EXPORT_SYMBOL_GPL(chip_wakeup);
void wilc_chip_sleep_manually(struct wilc *wilc)
{
if (wilc->chip_ps_state != WILC_CHIP_WAKEDUP)
return;
acquire_bus(wilc, WILC_BUS_ACQUIRE_ONLY);
chip_allow_sleep(wilc);
wilc->hif_func->hif_write_reg(wilc, 0x10a8, 1);
wilc->chip_ps_state = WILC_CHIP_SLEEPING_MANUAL;
release_bus(wilc, WILC_BUS_RELEASE_ONLY);
}
EXPORT_SYMBOL_GPL(wilc_chip_sleep_manually);
void host_wakeup_notify(struct wilc *wilc)
{
acquire_bus(wilc, WILC_BUS_ACQUIRE_ONLY);
wilc->hif_func->hif_write_reg(wilc, 0x10b0, 1);
release_bus(wilc, WILC_BUS_RELEASE_ONLY);
}
EXPORT_SYMBOL_GPL(host_wakeup_notify);
void host_sleep_notify(struct wilc *wilc)
{
acquire_bus(wilc, WILC_BUS_ACQUIRE_ONLY);
wilc->hif_func->hif_write_reg(wilc, 0x10ac, 1);
release_bus(wilc, WILC_BUS_RELEASE_ONLY);
}
EXPORT_SYMBOL_GPL(host_sleep_notify);
int wilc_wlan_handle_txq(struct net_device *dev, u32 *txq_count)
{
int i, entries = 0;
u32 sum;
u32 reg;
u32 offset = 0;
int vmm_sz = 0;
struct txq_entry_t *tqe;
int ret = 0;
int counter;
int timeout;
u32 vmm_table[WILC_VMM_TBL_SIZE];
struct wilc_vif *vif = netdev_priv(dev);
struct wilc *wilc = vif->wilc;
const struct wilc_hif_func *func;
u8 *txb = wilc->tx_buffer;
if (wilc->quit)
goto out;
mutex_lock(&wilc->txq_add_to_head_cs);
wilc_wlan_txq_filter_dup_tcp_ack(dev);
tqe = wilc_wlan_txq_get_first(wilc);
i = 0;
sum = 0;
do {
if (tqe && (i < (WILC_VMM_TBL_SIZE - 1))) {
if (tqe->type == WILC_CFG_PKT)
vmm_sz = ETH_CONFIG_PKT_HDR_OFFSET;
else if (tqe->type == WILC_NET_PKT)
vmm_sz = ETH_ETHERNET_HDR_OFFSET;
else
vmm_sz = HOST_HDR_OFFSET;
vmm_sz += tqe->buffer_size;
if (vmm_sz & 0x3)
vmm_sz = (vmm_sz + 4) & ~0x3;
if ((sum + vmm_sz) > WILC_TX_BUFF_SIZE)
break;
vmm_table[i] = vmm_sz / 4;
if (tqe->type == WILC_CFG_PKT)
vmm_table[i] |= BIT(10);
cpu_to_le32s(&vmm_table[i]);
i++;
sum += vmm_sz;
tqe = wilc_wlan_txq_get_next(wilc, tqe);
} else {
break;
}
} while (1);
if (i == 0)
goto out;
vmm_table[i] = 0x0;
acquire_bus(wilc, WILC_BUS_ACQUIRE_AND_WAKEUP);
counter = 0;
func = wilc->hif_func;
do {
ret = func->hif_read_reg(wilc, WILC_HOST_TX_CTRL, &reg);
if (!ret)
break;
if ((reg & 0x1) == 0)
break;
counter++;
if (counter > 200) {
counter = 0;
ret = func->hif_write_reg(wilc, WILC_HOST_TX_CTRL, 0);
break;
}
} while (!wilc->quit);
if (!ret)
goto out_release_bus;
timeout = 200;
do {
ret = func->hif_block_tx(wilc,
WILC_VMM_TBL_RX_SHADOW_BASE,
(u8 *)vmm_table,
((i + 1) * 4));
if (!ret)
break;
ret = func->hif_write_reg(wilc, WILC_HOST_VMM_CTL, 0x2);
if (!ret)
break;
do {
ret = func->hif_read_reg(wilc, WILC_HOST_VMM_CTL, &reg);
if (!ret)
break;
if ((reg >> 2) & 0x1) {
entries = ((reg >> 3) & 0x3f);
break;
}
release_bus(wilc, WILC_BUS_RELEASE_ALLOW_SLEEP);
} while (--timeout);
if (timeout <= 0) {
ret = func->hif_write_reg(wilc, WILC_HOST_VMM_CTL, 0x0);
break;
}
if (!ret)
break;
if (entries == 0) {
ret = func->hif_read_reg(wilc, WILC_HOST_TX_CTRL, &reg);
if (!ret)
break;
reg &= ~BIT(0);
ret = func->hif_write_reg(wilc, WILC_HOST_TX_CTRL, reg);
if (!ret)
break;
break;
}
break;
} while (1);
if (!ret)
goto out_release_bus;
if (entries == 0) {
ret = -ENOBUFS;
goto out_release_bus;
}
release_bus(wilc, WILC_BUS_RELEASE_ALLOW_SLEEP);
offset = 0;
i = 0;
do {
u32 header, buffer_offset;
char *bssid;
tqe = wilc_wlan_txq_remove_from_head(dev);
if (!tqe)
break;
if (vmm_table[i] == 0)
break;
le32_to_cpus(&vmm_table[i]);
vmm_sz = (vmm_table[i] & 0x3ff);
vmm_sz *= 4;
header = (tqe->type << 31) |
(tqe->buffer_size << 15) |
vmm_sz;
if (tqe->type == WILC_MGMT_PKT)
header |= BIT(30);
else
header &= ~BIT(30);
cpu_to_le32s(&header);
memcpy(&txb[offset], &header, 4);
if (tqe->type == WILC_CFG_PKT) {
buffer_offset = ETH_CONFIG_PKT_HDR_OFFSET;
} else if (tqe->type == WILC_NET_PKT) {
bssid = ((struct tx_complete_data *)(tqe->priv))->bssid;
buffer_offset = ETH_ETHERNET_HDR_OFFSET;
memcpy(&txb[offset + 8], bssid, 6);
} else {
buffer_offset = HOST_HDR_OFFSET;
}
memcpy(&txb[offset + buffer_offset],
tqe->buffer, tqe->buffer_size);
offset += vmm_sz;
i++;
tqe->status = 1;
if (tqe->tx_complete_func)
tqe->tx_complete_func(tqe->priv, tqe->status);
if (tqe->ack_idx != NOT_TCP_ACK &&
tqe->ack_idx < MAX_PENDING_ACKS)
vif->ack_filter.pending_acks[tqe->ack_idx].txqe = NULL;
kfree(tqe);
} while (--entries);
acquire_bus(wilc, WILC_BUS_ACQUIRE_AND_WAKEUP);
ret = func->hif_clear_int_ext(wilc, ENABLE_TX_VMM);
if (!ret)
goto out_release_bus;
ret = func->hif_block_tx_ext(wilc, 0, txb, offset);
out_release_bus:
release_bus(wilc, WILC_BUS_RELEASE_ALLOW_SLEEP);
out:
mutex_unlock(&wilc->txq_add_to_head_cs);
*txq_count = wilc->txq_entries;
return ret;
}
static void wilc_wlan_handle_rx_buff(struct wilc *wilc, u8 *buffer, int size)
{
int offset = 0;
u32 header;
u32 pkt_len, pkt_offset, tp_len;
int is_cfg_packet;
u8 *buff_ptr;
do {
buff_ptr = buffer + offset;
memcpy(&header, buff_ptr, 4);
le32_to_cpus(&header);
is_cfg_packet = (header >> 31) & 0x1;
pkt_offset = (header >> 22) & 0x1ff;
tp_len = (header >> 11) & 0x7ff;
pkt_len = header & 0x7ff;
if (pkt_len == 0 || tp_len == 0)
break;
if (pkt_offset & IS_MANAGMEMENT) {
pkt_offset &= ~(IS_MANAGMEMENT |
IS_MANAGMEMENT_CALLBACK |
IS_MGMT_STATUS_SUCCES);
buff_ptr += HOST_HDR_OFFSET;
wilc_wfi_mgmt_rx(wilc, buff_ptr, pkt_len);
} else {
if (!is_cfg_packet) {
if (pkt_len > 0) {
wilc_frmw_to_host(wilc, buff_ptr,
pkt_len, pkt_offset);
}
} else {
struct wilc_cfg_rsp rsp;
buff_ptr += pkt_offset;
wilc_wlan_cfg_indicate_rx(wilc, buff_ptr,
pkt_len,
&rsp);
if (rsp.type == WILC_CFG_RSP) {
if (wilc->cfg_seq_no == rsp.seq_no)
complete(&wilc->cfg_event);
} else if (rsp.type == WILC_CFG_RSP_STATUS) {
wilc_mac_indicate(wilc);
}
}
}
offset += tp_len;
if (offset >= size)
break;
} while (1);
}
static void wilc_wlan_handle_rxq(struct wilc *wilc)
{
int size;
u8 *buffer;
struct rxq_entry_t *rqe;
do {
if (wilc->quit) {
complete(&wilc->cfg_event);
break;
}
rqe = wilc_wlan_rxq_remove(wilc);
if (!rqe)
break;
buffer = rqe->buffer;
size = rqe->buffer_size;
wilc_wlan_handle_rx_buff(wilc, buffer, size);
kfree(rqe);
} while (1);
}
static void wilc_unknown_isr_ext(struct wilc *wilc)
{
wilc->hif_func->hif_clear_int_ext(wilc, 0);
}
static void wilc_pllupdate_isr_ext(struct wilc *wilc, u32 int_stats)
{
int trials = 10;
wilc->hif_func->hif_clear_int_ext(wilc, PLL_INT_CLR);
if (wilc->io_type == WILC_HIF_SDIO)
mdelay(WILC_PLL_TO_SDIO);
else
mdelay(WILC_PLL_TO_SPI);
while (!(is_wilc1000(wilc_get_chipid(wilc, true)) && --trials))
mdelay(1);
}
static void wilc_sleeptimer_isr_ext(struct wilc *wilc, u32 int_stats1)
{
wilc->hif_func->hif_clear_int_ext(wilc, SLEEP_INT_CLR);
}
static void wilc_wlan_handle_isr_ext(struct wilc *wilc, u32 int_status)
{
u32 offset = wilc->rx_buffer_offset;
u8 *buffer = NULL;
u32 size;
u32 retries = 0;
int ret = 0;
struct rxq_entry_t *rqe;
size = (int_status & 0x7fff) << 2;
while (!size && retries < 10) {
wilc->hif_func->hif_read_size(wilc, &size);
size = (size & 0x7fff) << 2;
retries++;
}
if (size <= 0)
return;
if (WILC_RX_BUFF_SIZE - offset < size)
offset = 0;
buffer = &wilc->rx_buffer[offset];
wilc->hif_func->hif_clear_int_ext(wilc, DATA_INT_CLR | ENABLE_RX_VMM);
ret = wilc->hif_func->hif_block_rx_ext(wilc, 0, buffer, size);
if (!ret)
return;
offset += size;
wilc->rx_buffer_offset = offset;
rqe = kmalloc(sizeof(*rqe), GFP_KERNEL);
if (!rqe)
return;
rqe->buffer = buffer;
rqe->buffer_size = size;
wilc_wlan_rxq_add(wilc, rqe);
wilc_wlan_handle_rxq(wilc);
}
void wilc_handle_isr(struct wilc *wilc)
{
u32 int_status;
acquire_bus(wilc, WILC_BUS_ACQUIRE_AND_WAKEUP);
wilc->hif_func->hif_read_int(wilc, &int_status);
if (int_status & PLL_INT_EXT)
wilc_pllupdate_isr_ext(wilc, int_status);
if (int_status & DATA_INT_EXT)
wilc_wlan_handle_isr_ext(wilc, int_status);
if (int_status & SLEEP_INT_EXT)
wilc_sleeptimer_isr_ext(wilc, int_status);
if (!(int_status & (ALL_INT_EXT)))
wilc_unknown_isr_ext(wilc);
release_bus(wilc, WILC_BUS_RELEASE_ALLOW_SLEEP);
}
EXPORT_SYMBOL_GPL(wilc_handle_isr);
int wilc_wlan_firmware_download(struct wilc *wilc, const u8 *buffer,
u32 buffer_size)
{
u32 offset;
u32 addr, size, size2, blksz;
u8 *dma_buffer;
int ret = 0;
blksz = BIT(12);
dma_buffer = kmalloc(blksz, GFP_KERNEL);
if (!dma_buffer)
return -EIO;
offset = 0;
do {
memcpy(&addr, &buffer[offset], 4);
memcpy(&size, &buffer[offset + 4], 4);
le32_to_cpus(&addr);
le32_to_cpus(&size);
acquire_bus(wilc, WILC_BUS_ACQUIRE_ONLY);
offset += 8;
while (((int)size) && (offset < buffer_size)) {
if (size <= blksz)
size2 = size;
else
size2 = blksz;
memcpy(dma_buffer, &buffer[offset], size2);
ret = wilc->hif_func->hif_block_tx(wilc, addr,
dma_buffer, size2);
if (!ret)
break;
addr += size2;
offset += size2;
size -= size2;
}
release_bus(wilc, WILC_BUS_RELEASE_ONLY);
if (!ret) {
ret = -EIO;
goto fail;
}
} while (offset < buffer_size);
fail:
kfree(dma_buffer);
return (ret < 0) ? ret : 0;
}
int wilc_wlan_start(struct wilc *wilc)
{
u32 reg = 0;
int ret;
u32 chipid;
if (wilc->io_type == WILC_HIF_SDIO) {
reg = 0;
reg |= BIT(3);
} else if (wilc->io_type == WILC_HIF_SPI) {
reg = 1;
}
acquire_bus(wilc, WILC_BUS_ACQUIRE_ONLY);
ret = wilc->hif_func->hif_write_reg(wilc, WILC_VMM_CORE_CFG, reg);
if (!ret) {
release_bus(wilc, WILC_BUS_RELEASE_ONLY);
return -EIO;
}
reg = 0;
if (wilc->io_type == WILC_HIF_SDIO && wilc->dev_irq_num)
reg |= WILC_HAVE_SDIO_IRQ_GPIO;
#ifdef WILC_DISABLE_PMU
#else
reg |= WILC_HAVE_USE_PMU;
#endif
#ifdef WILC_SLEEP_CLK_SRC_XO
reg |= WILC_HAVE_SLEEP_CLK_SRC_XO;
#elif defined WILC_SLEEP_CLK_SRC_RTC
reg |= WILC_HAVE_SLEEP_CLK_SRC_RTC;
#endif
#ifdef WILC_EXT_PA_INV_TX_RX
reg |= WILC_HAVE_EXT_PA_INV_TX_RX;
#endif
reg |= WILC_HAVE_USE_IRQ_AS_HOST_WAKE;
reg |= WILC_HAVE_LEGACY_RF_SETTINGS;
#ifdef XTAL_24
reg |= WILC_HAVE_XTAL_24;
#endif
#ifdef DISABLE_WILC_UART
reg |= WILC_HAVE_DISABLE_WILC_UART;
#endif
ret = wilc->hif_func->hif_write_reg(wilc, WILC_GP_REG_1, reg);
if (!ret) {
release_bus(wilc, WILC_BUS_RELEASE_ONLY);
return -EIO;
}
wilc->hif_func->hif_sync_ext(wilc, NUM_INT_EXT);
ret = wilc->hif_func->hif_read_reg(wilc, 0x1000, &chipid);
if (!ret) {
release_bus(wilc, WILC_BUS_RELEASE_ONLY);
return -EIO;
}
wilc->hif_func->hif_read_reg(wilc, WILC_GLB_RESET_0, &reg);
if ((reg & BIT(10)) == BIT(10)) {
reg &= ~BIT(10);
wilc->hif_func->hif_write_reg(wilc, WILC_GLB_RESET_0, reg);
wilc->hif_func->hif_read_reg(wilc, WILC_GLB_RESET_0, &reg);
}
reg |= BIT(10);
ret = wilc->hif_func->hif_write_reg(wilc, WILC_GLB_RESET_0, reg);
wilc->hif_func->hif_read_reg(wilc, WILC_GLB_RESET_0, &reg);
release_bus(wilc, WILC_BUS_RELEASE_ONLY);
return (ret < 0) ? ret : 0;
}
int wilc_wlan_stop(struct wilc *wilc)
{
u32 reg = 0;
int ret;
u8 timeout = 10;
acquire_bus(wilc, WILC_BUS_ACQUIRE_AND_WAKEUP);
ret = wilc->hif_func->hif_read_reg(wilc, WILC_GLB_RESET_0, &reg);
if (!ret) {
release_bus(wilc, WILC_BUS_RELEASE_ALLOW_SLEEP);
return ret;
}
reg &= ~BIT(10);
ret = wilc->hif_func->hif_write_reg(wilc, WILC_GLB_RESET_0, reg);
if (!ret) {
release_bus(wilc, WILC_BUS_RELEASE_ALLOW_SLEEP);
return ret;
}
do {
ret = wilc->hif_func->hif_read_reg(wilc,
WILC_GLB_RESET_0, &reg);
if (!ret) {
release_bus(wilc, WILC_BUS_RELEASE_ALLOW_SLEEP);
return ret;
}
if ((reg & BIT(10))) {
reg &= ~BIT(10);
ret = wilc->hif_func->hif_write_reg(wilc,
WILC_GLB_RESET_0,
reg);
timeout--;
} else {
ret = wilc->hif_func->hif_read_reg(wilc,
WILC_GLB_RESET_0,
&reg);
if (!ret) {
release_bus(wilc, WILC_BUS_RELEASE_ALLOW_SLEEP);
return ret;
}
break;
}
} while (timeout);
reg = (BIT(0) | BIT(1) | BIT(2) | BIT(3) | BIT(8) | BIT(9) | BIT(26) |
BIT(29) | BIT(30) | BIT(31));
wilc->hif_func->hif_write_reg(wilc, WILC_GLB_RESET_0, reg);
reg = (u32)~BIT(10);
ret = wilc->hif_func->hif_write_reg(wilc, WILC_GLB_RESET_0, reg);
release_bus(wilc, WILC_BUS_RELEASE_ALLOW_SLEEP);
return ret;
}
void wilc_wlan_cleanup(struct net_device *dev)
{
struct txq_entry_t *tqe;
struct rxq_entry_t *rqe;
u32 reg = 0;
int ret;
struct wilc_vif *vif = netdev_priv(dev);
struct wilc *wilc = vif->wilc;
wilc->quit = 1;
do {
tqe = wilc_wlan_txq_remove_from_head(dev);
if (!tqe)
break;
if (tqe->tx_complete_func)
tqe->tx_complete_func(tqe->priv, 0);
kfree(tqe);
} while (1);
do {
rqe = wilc_wlan_rxq_remove(wilc);
if (!rqe)
break;
kfree(rqe);
} while (1);
kfree(wilc->rx_buffer);
wilc->rx_buffer = NULL;
kfree(wilc->tx_buffer);
wilc->tx_buffer = NULL;
acquire_bus(wilc, WILC_BUS_ACQUIRE_AND_WAKEUP);
ret = wilc->hif_func->hif_read_reg(wilc, WILC_GP_REG_0, &reg);
if (!ret)
release_bus(wilc, WILC_BUS_RELEASE_ALLOW_SLEEP);
ret = wilc->hif_func->hif_write_reg(wilc, WILC_GP_REG_0,
(reg | ABORT_INT));
if (!ret)
release_bus(wilc, WILC_BUS_RELEASE_ALLOW_SLEEP);
release_bus(wilc, WILC_BUS_RELEASE_ALLOW_SLEEP);
wilc->hif_func->hif_deinit(NULL);
}
static int wilc_wlan_cfg_commit(struct wilc_vif *vif, int type,
u32 drv_handler)
{
struct wilc *wilc = vif->wilc;
struct wilc_cfg_frame *cfg = &wilc->cfg_frame;
int t_len = wilc->cfg_frame_offset + sizeof(struct wilc_cfg_cmd_hdr);
if (type == WILC_CFG_SET)
cfg->hdr.cmd_type = 'W';
else
cfg->hdr.cmd_type = 'Q';
cfg->hdr.seq_no = wilc->cfg_seq_no % 256;
cfg->hdr.total_len = cpu_to_le16(t_len);
cfg->hdr.driver_handler = cpu_to_le32(drv_handler);
wilc->cfg_seq_no = cfg->hdr.seq_no;
if (!wilc_wlan_txq_add_cfg_pkt(vif, (u8 *)&cfg->hdr, t_len))
return -1;
return 0;
}
int wilc_wlan_cfg_set(struct wilc_vif *vif, int start, u16 wid, u8 *buffer,
u32 buffer_size, int commit, u32 drv_handler)
{
u32 offset;
int ret_size;
struct wilc *wilc = vif->wilc;
mutex_lock(&wilc->cfg_cmd_lock);
if (start)
wilc->cfg_frame_offset = 0;
offset = wilc->cfg_frame_offset;
ret_size = wilc_wlan_cfg_set_wid(wilc->cfg_frame.frame, offset,
wid, buffer, buffer_size);
offset += ret_size;
wilc->cfg_frame_offset = offset;
if (!commit) {
mutex_unlock(&wilc->cfg_cmd_lock);
return ret_size;
}
netdev_dbg(vif->ndev, "%s: seqno[%d]\n", __func__, wilc->cfg_seq_no);
if (wilc_wlan_cfg_commit(vif, WILC_CFG_SET, drv_handler))
ret_size = 0;
if (!wait_for_completion_timeout(&wilc->cfg_event,
WILC_CFG_PKTS_TIMEOUT)) {
netdev_dbg(vif->ndev, "%s: Timed Out\n", __func__);
ret_size = 0;
}
wilc->cfg_frame_offset = 0;
wilc->cfg_seq_no += 1;
mutex_unlock(&wilc->cfg_cmd_lock);
return ret_size;
}
int wilc_wlan_cfg_get(struct wilc_vif *vif, int start, u16 wid, int commit,
u32 drv_handler)
{
u32 offset;
int ret_size;
struct wilc *wilc = vif->wilc;
mutex_lock(&wilc->cfg_cmd_lock);
if (start)
wilc->cfg_frame_offset = 0;
offset = wilc->cfg_frame_offset;
ret_size = wilc_wlan_cfg_get_wid(wilc->cfg_frame.frame, offset, wid);
offset += ret_size;
wilc->cfg_frame_offset = offset;
if (!commit) {
mutex_unlock(&wilc->cfg_cmd_lock);
return ret_size;
}
if (wilc_wlan_cfg_commit(vif, WILC_CFG_QUERY, drv_handler))
ret_size = 0;
if (!wait_for_completion_timeout(&wilc->cfg_event,
WILC_CFG_PKTS_TIMEOUT)) {
netdev_dbg(vif->ndev, "%s: Timed Out\n", __func__);
ret_size = 0;
}
wilc->cfg_frame_offset = 0;
wilc->cfg_seq_no += 1;
mutex_unlock(&wilc->cfg_cmd_lock);
return ret_size;
}
int wilc_wlan_cfg_get_val(struct wilc *wl, u16 wid, u8 *buffer, u32 buffer_size)
{
return wilc_wlan_cfg_get_wid_value(wl, wid, buffer, buffer_size);
}
int wilc_send_config_pkt(struct wilc_vif *vif, u8 mode, struct wid *wids,
u32 count, u32 drv)
{
int i;
int ret = 0;
if (mode == WILC_GET_CFG) {
for (i = 0; i < count; i++) {
if (!wilc_wlan_cfg_get(vif, !i,
wids[i].id,
(i == count - 1),
drv)) {
ret = -ETIMEDOUT;
break;
}
}
for (i = 0; i < count; i++) {
wids[i].size = wilc_wlan_cfg_get_val(vif->wilc,
wids[i].id,
wids[i].val,
wids[i].size);
}
} else if (mode == WILC_SET_CFG) {
for (i = 0; i < count; i++) {
if (!wilc_wlan_cfg_set(vif, !i,
wids[i].id,
wids[i].val,
wids[i].size,
(i == count - 1),
drv)) {
ret = -ETIMEDOUT;
break;
}
}
}
return ret;
}
static u32 init_chip(struct net_device *dev)
{
u32 chipid;
u32 reg, ret = 0;
struct wilc_vif *vif = netdev_priv(dev);
struct wilc *wilc = vif->wilc;
acquire_bus(wilc, WILC_BUS_ACQUIRE_ONLY);
chipid = wilc_get_chipid(wilc, true);
if ((chipid & 0xfff) != 0xa0) {
ret = wilc->hif_func->hif_read_reg(wilc, 0x1118, &reg);
if (!ret) {
netdev_err(dev, "fail read reg 0x1118\n");
goto release;
}
reg |= BIT(0);
ret = wilc->hif_func->hif_write_reg(wilc, 0x1118, reg);
if (!ret) {
netdev_err(dev, "fail write reg 0x1118\n");
goto release;
}
ret = wilc->hif_func->hif_write_reg(wilc, 0xc0000, 0x71);
if (!ret) {
netdev_err(dev, "fail write reg 0xc0000\n");
goto release;
}
}
release:
release_bus(wilc, WILC_BUS_RELEASE_ONLY);
return ret;
}
u32 wilc_get_chipid(struct wilc *wilc, bool update)
{
static u32 chipid;
u32 tempchipid = 0;
u32 rfrevid = 0;
if (chipid == 0 || update) {
wilc->hif_func->hif_read_reg(wilc, 0x1000, &tempchipid);
wilc->hif_func->hif_read_reg(wilc, 0x13f4, &rfrevid);
if (!is_wilc1000(tempchipid)) {
chipid = 0;
return chipid;
}
if (tempchipid == 0x1002a0) {
if (rfrevid != 0x1)
tempchipid = 0x1002a1;
} else if (tempchipid == 0x1002b0) {
if (rfrevid == 0x4)
tempchipid = 0x1002b1;
else if (rfrevid != 0x3)
tempchipid = 0x1002b2;
}
chipid = tempchipid;
}
return chipid;
}
int wilc_wlan_init(struct net_device *dev)
{
int ret = 0;
struct wilc_vif *vif = netdev_priv(dev);
struct wilc *wilc;
wilc = vif->wilc;
wilc->quit = 0;
if (!wilc->hif_func->hif_init(wilc, false)) {
ret = -EIO;
goto fail;
}
if (!wilc->tx_buffer)
wilc->tx_buffer = kmalloc(WILC_TX_BUFF_SIZE, GFP_KERNEL);
if (!wilc->tx_buffer) {
ret = -ENOBUFS;
goto fail;
}
if (!wilc->rx_buffer)
wilc->rx_buffer = kmalloc(WILC_RX_BUFF_SIZE, GFP_KERNEL);
if (!wilc->rx_buffer) {
ret = -ENOBUFS;
goto fail;
}
if (!init_chip(dev)) {
ret = -EIO;
goto fail;
}
return 1;
fail:
kfree(wilc->rx_buffer);
wilc->rx_buffer = NULL;
kfree(wilc->tx_buffer);
wilc->tx_buffer = NULL;
return ret;
}