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aic8800d80/drivers/aic8800/aic8800_fdrv/aicwf_sdio.c
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/**
* aicwf_sdmmc.c
*
* SDIO function declarations
*
* Copyright (C) AICSemi 2018-2020
*/
#include <linux/interrupt.h>
#include <linux/completion.h>
#include <linux/mmc/sdio.h>
#include <linux/mmc/sdio_ids.h>
#include <linux/mmc/sdio_func.h>
#include <linux/mmc/card.h>
#include <linux/mmc/host.h>
#include <linux/semaphore.h>
#include <linux/debugfs.h>
#include <linux/kthread.h>
#include "aicwf_txrxif.h"
#include "aicwf_sdio.h"
#include "sdio_host.h"
#include "rwnx_defs.h"
#include "rwnx_platform.h"
#ifdef CONFIG_INGENIC_T20
#include "mach/jzmmc.h"
#endif /* CONFIG_INGENIC_T20 */
#ifdef CONFIG_PLATFORM_ALLWINNER
void platform_wifi_power_off(void);
#endif
int aicwf_sdio_readb(struct aic_sdio_dev *sdiodev, uint regaddr, u8 *val)
{
int ret;
sdio_claim_host(sdiodev->func);
*val = sdio_readb(sdiodev->func, regaddr, &ret);
sdio_release_host(sdiodev->func);
return ret;
}
int aicwf_sdio_writeb(struct aic_sdio_dev *sdiodev, uint regaddr, u8 val)
{
int ret;
sdio_claim_host(sdiodev->func);
sdio_writeb(sdiodev->func, val, regaddr, &ret);
sdio_release_host(sdiodev->func);
return ret;
}
int aicwf_sdio_flow_ctrl(struct aic_sdio_dev *sdiodev)
{
int ret = -1;
u8 fc_reg = 0;
u32 count = 0;
while (true) {
ret = aicwf_sdio_readb(sdiodev, SDIOWIFI_FLOW_CTRL_REG, &fc_reg);
if (ret) {
return -1;
}
if ((fc_reg & SDIOWIFI_FLOWCTRL_MASK_REG) != 0) {
ret = fc_reg & SDIOWIFI_FLOWCTRL_MASK_REG;
return ret;
} else {
if (count >= FLOW_CTRL_RETRY_COUNT) {
ret = -fc_reg;
break;
}
count++;
if (count < 30)
udelay(200);
else if(count < 40)
mdelay(1);
else
mdelay(10);
}
}
return ret;
}
int aicwf_sdio_send_pkt(struct aic_sdio_dev *sdiodev, u8 *buf, uint count)
{
int ret = 0;
sdio_claim_host(sdiodev->func);
ret = sdio_writesb(sdiodev->func, 7, buf, count);
sdio_release_host(sdiodev->func);
return ret;
}
int aicwf_sdio_recv_pkt(struct aic_sdio_dev *sdiodev, struct sk_buff *skbbuf,
u32 size)
{
int ret;
if ((!skbbuf) || (!size)) {
return -EINVAL;;
}
sdio_claim_host(sdiodev->func);
ret = sdio_readsb(sdiodev->func, skbbuf->data, 8, size);
sdio_release_host(sdiodev->func);
if (ret < 0) {
return ret;
}
skbbuf->len = size;
return ret;
}
static int aicwf_sdio_probe(struct sdio_func *func,
const struct sdio_device_id *id)
{
struct mmc_host *host;
struct aic_sdio_dev *sdiodev;
struct aicwf_bus *bus_if;
int err = -ENODEV;
sdio_dbg("%s:%d\n", __func__, func->num);
host = func->card->host;
if(func->num != 1) {
return err;
}
bus_if = kzalloc(sizeof(struct aicwf_bus), GFP_KERNEL);
if (!bus_if) {
sdio_err("alloc bus fail\n");
return -ENOMEM;
}
sdiodev = kzalloc(sizeof(struct aic_sdio_dev), GFP_KERNEL);
if (!sdiodev) {
sdio_err("alloc sdiodev fail\n");
kfree(bus_if);
return -ENOMEM;
}
sdiodev->func = func;
sdiodev->bus_if = bus_if;
bus_if->bus_priv.sdio = sdiodev;
dev_set_drvdata(&func->dev, bus_if);
sdiodev->dev = &func->dev;
err = aicwf_sdio_func_init(sdiodev);
if (err < 0) {
sdio_err("sdio func init fail\n");
goto fail;
}
aicwf_sdio_bus_init(sdiodev);
host->caps |= MMC_CAP_NONREMOVABLE;
aicwf_rwnx_sdio_platform_init(sdiodev);
aicwf_hostif_ready();
return 0;
fail:
aicwf_sdio_func_deinit(sdiodev);
dev_set_drvdata(&func->dev, NULL);
kfree(sdiodev);
kfree(bus_if);
return err;
}
static void aicwf_sdio_remove(struct sdio_func *func)
{
struct mmc_host *host;
struct aicwf_bus *bus_if = NULL;
struct aic_sdio_dev *sdiodev = NULL;
sdio_dbg("%s\n", __func__);
host = func->card->host;
host->caps &= ~MMC_CAP_NONREMOVABLE;
bus_if = dev_get_drvdata(&func->dev);
if (!bus_if) {
return;
}
sdiodev = bus_if->bus_priv.sdio;
if (!sdiodev) {
return;
}
sdiodev->bus_if->state = BUS_DOWN_ST;
aicwf_sdio_release(sdiodev);
aicwf_sdio_func_deinit(sdiodev);
dev_set_drvdata(&sdiodev->func->dev, NULL);
kfree(sdiodev);
kfree(bus_if);
sdio_dbg("%s done\n", __func__);
#ifdef CONFIG_PLATFORM_ALLWINNER
platform_wifi_power_off();
#endif
}
static int aicwf_sdio_suspend(struct device *dev)
{
int ret = 0;
struct aicwf_bus *bus_if = dev_get_drvdata(dev);
struct aic_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
mmc_pm_flag_t sdio_flags;
struct rwnx_vif *rwnx_vif, *tmp;
sdio_dbg("%s\n", __func__);
list_for_each_entry_safe(rwnx_vif, tmp, &sdiodev->rwnx_hw->vifs, list) {
if(rwnx_vif->ndev)
netif_device_detach(rwnx_vif->ndev);
}
sdio_flags = sdio_get_host_pm_caps(sdiodev->func);
if (!(sdio_flags & MMC_PM_KEEP_POWER)) {
return -EINVAL;
}
ret = sdio_set_host_pm_flags(sdiodev->func, MMC_PM_KEEP_POWER);
if (ret) {
return ret;
}
while (sdiodev->state == SDIO_ACTIVE_ST) {
if (down_interruptible(&sdiodev->tx_priv->txctl_sema)){
continue;
}
aicwf_sdio_pwr_stctl(sdiodev, SDIO_SLEEP_ST);
up(&sdiodev->tx_priv->txctl_sema);
break;
}
return 0;
}
static int aicwf_sdio_resume(struct device *dev)
{
struct aicwf_bus *bus_if = dev_get_drvdata(dev);
struct aic_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
struct rwnx_vif *rwnx_vif, *tmp;
sdio_dbg("%s\n", __func__);
list_for_each_entry_safe(rwnx_vif, tmp, &sdiodev->rwnx_hw->vifs, list) {
if(rwnx_vif->ndev)
netif_device_attach(rwnx_vif->ndev);
}
return 0;
}
static const struct sdio_device_id aicwf_sdmmc_ids[] = {
{SDIO_DEVICE_CLASS(SDIO_CLASS_WLAN)},
{ },
};
MODULE_DEVICE_TABLE(sdio, aicwf_sdmmc_ids);
static const struct dev_pm_ops aicwf_sdio_pm_ops = {
SET_SYSTEM_SLEEP_PM_OPS(aicwf_sdio_suspend, aicwf_sdio_resume)
};
static struct sdio_driver aicwf_sdio_driver = {
.probe = aicwf_sdio_probe,
.remove = aicwf_sdio_remove,
.name = AICWF_SDIO_NAME,
.id_table = aicwf_sdmmc_ids,
.drv = {
.pm = &aicwf_sdio_pm_ops,
},
};
#ifdef CONFIG_NANOPI_M4
extern int mmc_rescan_try_freq(struct mmc_host *host, unsigned freq);
extern unsigned aic_max_freqs;
extern struct mmc_host* aic_host_drv;
extern int __mmc_claim_host(struct mmc_host *host, atomic_t *abort);
extern void mmc_release_host(struct mmc_host *host);
#endif
#ifdef CONFIG_PLATFORM_ALLWINNER
extern void sunxi_mmc_rescan_card(unsigned ids);
extern void sunxi_wlan_set_power(int on);
extern int sunxi_wlan_get_bus_index(void);
int platform_wifi_power_on(void)
{
int ret=0;
int wlan_bus_index=sunxi_wlan_get_bus_index();
if(wlan_bus_index < 0)
return wlan_bus_index;
sunxi_wlan_set_power(1);
mdelay(1000);
sunxi_mmc_rescan_card(wlan_bus_index);
printk("platform_wifi_power_on");
return ret;
}
void platform_wifi_power_off(void)
{
int wlan_bus_index = sunxi_wlan_get_bus_index();
if(wlan_bus_index < 0) {
printk("no wlan_bus_index\n");
return ;
}
printk("power_off\n");
sunxi_wlan_set_power(0);
mdelay(100);
//sunxi_mmc_rescan_card(wlan_bus_index);
printk("platform_wifi_power_off");
}
#endif
void aicwf_sdio_register(void)
{
#ifdef CONFIG_PLATFORM_NANOPI
extern_wifi_set_enable(0);
mdelay(200);
extern_wifi_set_enable(1);
mdelay(200);
sdio_reinit();
#endif /*CONFIG_PLATFORM_NANOPI*/
#ifdef CONFIG_INGENIC_T20
jzmmc_manual_detect(1, 1);
#endif /* CONFIG_INGENIC_T20 */
#ifdef CONFIG_NANOPI_M4
if(aic_host_drv->card == NULL){
__mmc_claim_host(aic_host_drv,NULL);
printk("aic: >>>mmc_rescan_try_freq\n");
mmc_rescan_try_freq(aic_host_drv,aic_max_freqs);
mmc_release_host(aic_host_drv);
}
#endif
#ifdef CONFIG_PLATFORM_ALLWINNER
platform_wifi_power_on();
#endif
if (sdio_register_driver(&aicwf_sdio_driver)) {
} else {
//may add mmc_rescan here
}
}
void aicwf_sdio_exit(void)
{
if(g_rwnx_plat && g_rwnx_plat->enabled)
rwnx_platform_deinit(g_rwnx_plat->sdiodev->rwnx_hw);
sdio_unregister_driver(&aicwf_sdio_driver);
#ifdef CONFIG_PLATFORM_NANOPI
extern_wifi_set_enable(0);
#endif /*CONFIG_PLATFORM_NANOPI*/
kfree(g_rwnx_plat);
}
int aicwf_sdio_wakeup(struct aic_sdio_dev *sdiodev)
{
int ret = 0;
int read_retry;
int write_retry = 20;
if (sdiodev->state == SDIO_SLEEP_ST) {
down(&sdiodev->pwrctl_wakeup_sema);
if (sdiodev->rwnx_hw->vif_started) {
if(sdiodev->state == SDIO_ACTIVE_ST) {
up(&sdiodev->pwrctl_wakeup_sema);
return 0;
}
sdio_dbg("w\n");
while(write_retry) {
ret = aicwf_sdio_writeb(sdiodev, SDIOWIFI_WAKEUP_REG, 1);
if (ret) {
txrx_err("sdio wakeup fail\n");
ret = -1;
} else {
read_retry=10;
while (read_retry) {
u8 val;
ret = aicwf_sdio_readb(sdiodev, SDIOWIFI_SLEEP_REG, &val);
if (ret==0 && val&0x10) {
break;
}
read_retry--;
udelay(200);
}
if(read_retry != 0)
break;
}
sdio_dbg("write retry: %d \n",write_retry);
write_retry--;
udelay(100);
}
}
sdiodev->state = SDIO_ACTIVE_ST;
aicwf_sdio_pwrctl_timer(sdiodev, sdiodev->active_duration);
up(&sdiodev->pwrctl_wakeup_sema);
}
return ret;
}
extern u8 dhcped;
int aicwf_sdio_sleep_allow(struct aic_sdio_dev *sdiodev)
{
int ret = 0;
struct aicwf_bus *bus_if = sdiodev->bus_if;
struct rwnx_hw *rwnx_hw = sdiodev->rwnx_hw;
struct rwnx_vif *rwnx_vif, *tmp;
if (bus_if->state == BUS_DOWN_ST) {
ret = aicwf_sdio_writeb(sdiodev, SDIOWIFI_SLEEP_REG, 0x10);
if (ret) {
sdio_err("Write sleep fail!\n");
}
aicwf_sdio_pwrctl_timer(sdiodev, 0);
return ret;
}
list_for_each_entry_safe(rwnx_vif, tmp, &rwnx_hw->vifs, list) {
if((rwnx_hw->avail_idx_map & BIT(rwnx_vif->drv_vif_index)) == 0) {
switch(RWNX_VIF_TYPE(rwnx_vif)) {
case NL80211_IFTYPE_P2P_CLIENT:
rwnx_hw->is_p2p_alive = 1;
return ret;
case NL80211_IFTYPE_AP:
return ret;
case NL80211_IFTYPE_P2P_GO:
rwnx_hw->is_p2p_alive = 1;
return ret;
default:
break;
}
}
}
sdio_info("sleep: %d, %d\n", sdiodev->state, rwnx_hw->scanning);
if (sdiodev->state == SDIO_ACTIVE_ST && !rwnx_hw->scanning && !rwnx_hw->is_p2p_alive \
&& !rwnx_hw->is_p2p_connected && dhcped) {
down(&sdiodev->pwrctl_wakeup_sema);
if (rwnx_hw->vif_started) {
sdio_dbg("s\n");
ret = aicwf_sdio_writeb(sdiodev, SDIOWIFI_SLEEP_REG, 0x10);
if (ret)
sdio_err("Write sleep fail!\n");
}
sdiodev->state = SDIO_SLEEP_ST;
aicwf_sdio_pwrctl_timer(sdiodev, 0);
up(&sdiodev->pwrctl_wakeup_sema);
}
else{
aicwf_sdio_pwrctl_timer(sdiodev, sdiodev->active_duration);
}
return ret;
}
int aicwf_sdio_pwr_stctl(struct aic_sdio_dev *sdiodev, uint target)
{
int ret = 0;
if (sdiodev->bus_if->state == BUS_DOWN_ST) {
return -1;
}
if (sdiodev->state == target) {
if (target == SDIO_ACTIVE_ST) {
aicwf_sdio_pwrctl_timer(sdiodev, sdiodev->active_duration);
}
return ret;
}
switch (target) {
case SDIO_ACTIVE_ST:
aicwf_sdio_wakeup(sdiodev);
break;
case SDIO_SLEEP_ST:
aicwf_sdio_sleep_allow(sdiodev);
break;
}
return ret;
}
int aicwf_sdio_txpkt(struct aic_sdio_dev *sdiodev, struct sk_buff *pkt)
{
int ret = 0;
u8 *frame;
u32 len = 0;
struct aicwf_bus *bus_if = dev_get_drvdata(sdiodev->dev);
if (bus_if->state == BUS_DOWN_ST) {
sdio_dbg("tx bus is down!\n");
return -EINVAL;
}
frame = (u8 *) (pkt->data);
len = pkt->len;
len = (len + SDIOWIFI_FUNC_BLOCKSIZE - 1) / SDIOWIFI_FUNC_BLOCKSIZE * SDIOWIFI_FUNC_BLOCKSIZE;
ret = aicwf_sdio_send_pkt(sdiodev, pkt->data, len);
if (ret)
sdio_err("aicwf_sdio_send_pkt fail%d\n", ret);
return ret;
}
static int aicwf_sdio_intr_get_len_bytemode(struct aic_sdio_dev *sdiodev, u8 *byte_len)
{
int ret = 0;
if (!byte_len)
return -EBADE;
if (sdiodev->bus_if->state == BUS_DOWN_ST) {
*byte_len = 0;
} else {
ret = aicwf_sdio_readb(sdiodev, SDIOWIFI_BYTEMODE_LEN_REG, byte_len);
sdiodev->rx_priv->data_len = (*byte_len)*4;
}
return ret;
}
static void aicwf_sdio_bus_stop(struct device *dev)
{
struct aicwf_bus *bus_if = dev_get_drvdata(dev);
struct aic_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
int ret;
aicwf_sdio_pwrctl_timer(sdiodev, 0);
if(timer_pending(&sdiodev->rwnx_hw->p2p_alive_timer)){
ret = del_timer(&sdiodev->rwnx_hw->p2p_alive_timer);}
sdio_dbg("%s\n",__func__);
if (sdiodev->pwrctl_tsk) {
complete(&sdiodev->pwrctrl_trgg);
kthread_stop(sdiodev->pwrctl_tsk);
sdiodev->pwrctl_tsk = NULL;
}
sdio_dbg("%s:pwrctl stopped\n",__func__);
bus_if->state = BUS_DOWN_ST;
ret = down_interruptible(&sdiodev->tx_priv->txctl_sema);
if (ret)
sdio_err("down txctl_sema fail\n");
aicwf_sdio_pwr_stctl(sdiodev, SDIO_SLEEP_ST);
if (!ret)
up(&sdiodev->tx_priv->txctl_sema);
aicwf_frame_queue_flush(&sdiodev->tx_priv->txq);
sdio_dbg("exit %s\n",__func__);
}
struct sk_buff *aicwf_sdio_readframes(struct aic_sdio_dev *sdiodev)
{
int ret = 0;
u32 size = 0;
struct sk_buff *skb = NULL;
struct aicwf_bus *bus_if = dev_get_drvdata(sdiodev->dev);
if (bus_if->state == BUS_DOWN_ST) {
sdio_dbg("bus down\n");
return NULL;
}
size = sdiodev->rx_priv->data_len;
skb = __dev_alloc_skb(size, GFP_KERNEL);
if (!skb) {
return NULL;
}
ret = aicwf_sdio_recv_pkt(sdiodev, skb, size);
if (ret) {
dev_kfree_skb(skb);
skb = NULL;
}
return skb;
}
static int aicwf_sdio_tx_msg(struct aic_sdio_dev *sdiodev)
{
int err = 0;
u16 len;
u8 *payload = sdiodev->tx_priv->cmd_buf;
u16 payload_len = sdiodev->tx_priv->cmd_len;
u8 adjust_str[4] = {0, 0, 0, 0};
int adjust_len = 0;
int buffer_cnt = 0;
u8 retry = 0;
len = payload_len;
if ((len % TX_ALIGNMENT) != 0) {
adjust_len = roundup(len, TX_ALIGNMENT);
memcpy(payload+payload_len, adjust_str, (adjust_len - len));
payload_len += (adjust_len - len);
}
len = payload_len;
//link tail is necessary
if ((len % SDIOWIFI_FUNC_BLOCKSIZE) != 0) {
memset(payload+payload_len, 0, TAIL_LEN);
payload_len += TAIL_LEN;
len = (payload_len/SDIOWIFI_FUNC_BLOCKSIZE + 1) * SDIOWIFI_FUNC_BLOCKSIZE;
} else{
len = payload_len;
}
buffer_cnt = aicwf_sdio_flow_ctrl(sdiodev);
while ((buffer_cnt <= 0 || (buffer_cnt > 0 && len > (buffer_cnt * BUFFER_SIZE))) && retry < 5) {
retry++;
buffer_cnt = aicwf_sdio_flow_ctrl(sdiodev);
}
down(&sdiodev->tx_priv->cmd_txsema);
if (buffer_cnt > 0 && len <= (buffer_cnt * BUFFER_SIZE)) {
err = aicwf_sdio_send_pkt(sdiodev, payload, len);
if (err) {
sdio_err("aicwf_sdio_send_pkt fail%d\n", err);
}
} else {
sdio_err("tx msg fc retry fail\n");
up(&sdiodev->tx_priv->cmd_txsema);
return -1;
}
sdiodev->tx_priv->cmd_txstate = false;
if (!err)
sdiodev->tx_priv->cmd_tx_succ= true;
else
sdiodev->tx_priv->cmd_tx_succ= false;
up(&sdiodev->tx_priv->cmd_txsema);
return err;
}
static void aicwf_sdio_tx_process(struct aic_sdio_dev *sdiodev)
{
int err = 0;
if (sdiodev->bus_if->state == BUS_DOWN_ST) {
sdio_err("Bus is down\n");
return;
}
aicwf_sdio_pwr_stctl(sdiodev, SDIO_ACTIVE_ST);
//config
sdio_info("send cmd\n");
if (sdiodev->tx_priv->cmd_txstate) {
if (down_interruptible(&sdiodev->tx_priv->txctl_sema)) {
txrx_err("txctl down bus->txctl_sema fail\n");
return;
}
if (sdiodev->state != SDIO_ACTIVE_ST) {
txrx_err("state err\n");
up(&sdiodev->tx_priv->txctl_sema);
txrx_err("txctl up bus->txctl_sema fail\n");
return;
}
err = aicwf_sdio_tx_msg(sdiodev);
up(&sdiodev->tx_priv->txctl_sema);
if (waitqueue_active(&sdiodev->tx_priv->cmd_txdone_wait))
wake_up(&sdiodev->tx_priv->cmd_txdone_wait);
}
//data
sdio_info("send data\n");
if (down_interruptible(&sdiodev->tx_priv->txctl_sema)) {
txrx_err("txdata down bus->txctl_sema\n");
return;
}
if (sdiodev->state != SDIO_ACTIVE_ST) {
txrx_err("sdio state err\n");
up(&sdiodev->tx_priv->txctl_sema);
return;
}
sdiodev->tx_priv->fw_avail_bufcnt = aicwf_sdio_flow_ctrl(sdiodev);
while (!aicwf_is_framequeue_empty(&sdiodev->tx_priv->txq)) {
aicwf_sdio_send(sdiodev->tx_priv);
if(sdiodev->tx_priv->cmd_txstate)
break;
}
up(&sdiodev->tx_priv->txctl_sema);
}
static int aicwf_sdio_bus_txdata(struct device *dev, struct sk_buff *pkt)
{
uint prio;
int ret = -EBADE;
struct aicwf_bus *bus_if = dev_get_drvdata(dev);
struct aic_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
prio = (pkt->priority & 0x7);
spin_lock_bh(&sdiodev->tx_priv->txqlock);
if (!aicwf_frame_enq(sdiodev->dev, &sdiodev->tx_priv->txq, pkt, prio)) {
aicwf_dev_skb_free(pkt);
spin_unlock_bh(&sdiodev->tx_priv->txqlock);
return -ENOSR;
} else {
ret = 0;
}
if (bus_if->state != BUS_UP_ST) {
sdio_err("bus_if stopped\n");
spin_unlock_bh(&sdiodev->tx_priv->txqlock);
return -1;
}
atomic_inc(&sdiodev->tx_priv->tx_pktcnt);
spin_unlock_bh(&sdiodev->tx_priv->txqlock);
complete(&bus_if->bustx_trgg);
return ret;
}
static int aicwf_sdio_bus_txmsg(struct device *dev, u8 *msg, uint msglen)
{
// int ret = -1;
struct aicwf_bus *bus_if = dev_get_drvdata(dev);
struct aic_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
down(&sdiodev->tx_priv->cmd_txsema);
sdiodev->tx_priv->cmd_txstate = true;
sdiodev->tx_priv->cmd_tx_succ = false;
sdiodev->tx_priv->cmd_buf = msg;
sdiodev->tx_priv->cmd_len = msglen;
up(&sdiodev->tx_priv->cmd_txsema);
if (bus_if->state != BUS_UP_ST) {
sdio_err("bus has stop\n");
return -1;
}
complete(&bus_if->bustx_trgg);
#if 0
if (sdiodev->tx_priv->cmd_txstate) {
int timeout = msecs_to_jiffies(CMD_TX_TIMEOUT);
ret = wait_event_interruptible_timeout(sdiodev->tx_priv->cmd_txdone_wait, \
!(sdiodev->tx_priv->cmd_txstate), timeout);
}
if (!sdiodev->tx_priv->cmd_txstate && sdiodev->tx_priv->cmd_tx_succ) {
ret = 0;
} else {
sdio_err("send faild:%d, %d,%x\n", sdiodev->tx_priv->cmd_txstate, sdiodev->tx_priv->cmd_tx_succ, ret);
ret = -EIO;
}
return ret;
#endif
return 0;
}
int aicwf_sdio_send(struct aicwf_tx_priv *tx_priv)
{
struct sk_buff *pkt;
struct aic_sdio_dev *sdiodev = tx_priv->sdiodev;
u32 aggr_len = 0;
int retry_times = 0;
int max_retry_times = 5;
aggr_len = (tx_priv->tail - tx_priv->head);
if(((atomic_read(&tx_priv->aggr_count) == 0) && (aggr_len != 0))
|| ((atomic_read(&tx_priv->aggr_count) != 0) && (aggr_len == 0))) {
if (aggr_len > 0)
aicwf_sdio_aggrbuf_reset(tx_priv);
goto done;
}
if (tx_priv->fw_avail_bufcnt <= 0) { //flow control failed
tx_priv->fw_avail_bufcnt = aicwf_sdio_flow_ctrl(sdiodev);
while(tx_priv->fw_avail_bufcnt <=0 && retry_times < max_retry_times) {
retry_times++;
tx_priv->fw_avail_bufcnt = aicwf_sdio_flow_ctrl(sdiodev);
}
if(tx_priv->fw_avail_bufcnt <= 0) {
sdio_err("fc retry %d fail\n", tx_priv->fw_avail_bufcnt);
goto done;
}
}
if (atomic_read(&tx_priv->aggr_count) == tx_priv->fw_avail_bufcnt) {
if (atomic_read(&tx_priv->aggr_count) > 0) {
tx_priv->fw_avail_bufcnt -= atomic_read(&tx_priv->aggr_count);
aicwf_sdio_aggr_send(tx_priv); //send and check the next pkt;
}
} else {
spin_lock_bh(&sdiodev->tx_priv->txqlock);
pkt = aicwf_frame_dequeue(&sdiodev->tx_priv->txq);
if (pkt == NULL) {
sdio_err("txq no pkt\n");
spin_unlock_bh(&sdiodev->tx_priv->txqlock);
goto done;
}
atomic_dec(&sdiodev->tx_priv->tx_pktcnt);
spin_unlock_bh(&sdiodev->tx_priv->txqlock);
if(tx_priv==NULL || tx_priv->tail==NULL || pkt==NULL)
txrx_err("null error\n");
if (aicwf_sdio_aggr(tx_priv, pkt)) {
aicwf_sdio_aggrbuf_reset(tx_priv);
sdio_err("add aggr pkts failed!\n");
goto done;
}
//when aggr finish or there is cmd to send, just send this aggr pkt to fw
if ((int)atomic_read(&sdiodev->tx_priv->tx_pktcnt) == 0 || sdiodev->tx_priv->cmd_txstate) { //no more pkt send it!
tx_priv->fw_avail_bufcnt -= atomic_read(&tx_priv->aggr_count);
aicwf_sdio_aggr_send(tx_priv);
} else
goto done;
}
done:
return 0;
}
int aicwf_sdio_aggr(struct aicwf_tx_priv *tx_priv, struct sk_buff *pkt)
{
struct rwnx_txhdr *txhdr = (struct rwnx_txhdr *)pkt->data;
u8 *start_ptr = tx_priv->tail;
u8 sdio_header[4];
u8 adjust_str[4] = {0, 0, 0, 0};
u32 curr_len = 0;
int allign_len = 0;
sdio_header[0] =((pkt->len - sizeof(struct rwnx_txhdr) + sizeof(struct txdesc_api)) & 0xff);
sdio_header[1] =(((pkt->len - sizeof(struct rwnx_txhdr) + sizeof(struct txdesc_api)) >> 8)&0x0f);
sdio_header[2] = 0x01; //data
sdio_header[3] = 0; //reserved
memcpy(tx_priv->tail, (u8 *)&sdio_header, sizeof(sdio_header));
tx_priv->tail += sizeof(sdio_header);
//payload
memcpy(tx_priv->tail, (u8 *)(long)&txhdr->sw_hdr->desc, sizeof(struct txdesc_api));
tx_priv->tail += sizeof(struct txdesc_api); //hostdesc
memcpy(tx_priv->tail, (u8 *)((u8 *)txhdr + txhdr->sw_hdr->headroom), pkt->len-txhdr->sw_hdr->headroom);
tx_priv->tail += (pkt->len - txhdr->sw_hdr->headroom);
//word alignment
curr_len = tx_priv->tail - tx_priv->head;
if (curr_len & (TX_ALIGNMENT - 1)) {
allign_len = roundup(curr_len, TX_ALIGNMENT)-curr_len;
memcpy(tx_priv->tail, adjust_str, allign_len);
tx_priv->tail += allign_len;
}
start_ptr[0] = ((tx_priv->tail - start_ptr - 4) & 0xff);
start_ptr[1] = (((tx_priv->tail - start_ptr - 4)>>8) & 0x0f);
tx_priv->aggr_buf->dev = pkt->dev;
if(!txhdr->sw_hdr->need_cfm) {
kmem_cache_free(txhdr->sw_hdr->rwnx_vif->rwnx_hw->sw_txhdr_cache, txhdr->sw_hdr);
skb_pull(pkt, txhdr->sw_hdr->headroom);
consume_skb(pkt);
}
atomic_inc(&tx_priv->aggr_count);
return 0;
}
void aicwf_sdio_aggr_send(struct aicwf_tx_priv *tx_priv)
{
struct sk_buff *tx_buf = tx_priv->aggr_buf;
int ret = 0;
int curr_len = 0;
//link tail is necessary
curr_len = tx_priv->tail - tx_priv->head;
if ((curr_len % TXPKT_BLOCKSIZE) != 0) {
memset(tx_priv->tail, 0, TAIL_LEN);
tx_priv->tail += TAIL_LEN;
}
tx_buf->len = tx_priv->tail - tx_priv->head;
ret = aicwf_sdio_txpkt(tx_priv->sdiodev, tx_buf);
if (ret < 0) {
sdio_err("fail to send aggr pkt!\n");
}
aicwf_sdio_aggrbuf_reset(tx_priv);
}
void aicwf_sdio_aggrbuf_reset(struct aicwf_tx_priv *tx_priv)
{
struct sk_buff *aggr_buf = tx_priv->aggr_buf;
tx_priv->tail = tx_priv->head;
aggr_buf->len = 0;
atomic_set(&tx_priv->aggr_count, 0);
}
static int aicwf_sdio_bus_start(struct device *dev)
{
struct aicwf_bus *bus_if = dev_get_drvdata(dev);
struct aic_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
int ret = 0;
#if 1
sdio_claim_host(sdiodev->func);
sdio_claim_irq(sdiodev->func, aicwf_sdio_hal_irqhandler);
#else
//since we have func2 we don't register irq handler
sdio_claim_irq(sdiodev->func, NULL);
sdiodev->func->irq_handler = (sdio_irq_handler_t *)aicwf_sdio_hal_irqhandler;
#endif
//enable sdio interrupt
ret = aicwf_sdio_writeb(sdiodev, SDIOWIFI_INTR_CONFIG_REG, 0x07);
sdio_release_host(sdiodev->func);
if (ret != 0)
sdio_err("intr register failed:%d\n", ret);
bus_if->state = BUS_UP_ST;
return ret;
}
int sdio_bustx_thread(void *data)
{
struct aicwf_bus *bus = (struct aicwf_bus *) data;
struct aic_sdio_dev *sdiodev = bus->bus_priv.sdio;
while (1) {
if(kthread_should_stop()) {
sdio_err("sdio bustx thread stop\n");
break;
}
if (!wait_for_completion_interruptible(&bus->bustx_trgg)) {
if(sdiodev->bus_if->state == BUS_DOWN_ST)
break;
if((int)(atomic_read(&sdiodev->tx_priv->tx_pktcnt) > 0) || (sdiodev->tx_priv->cmd_txstate == true))
aicwf_sdio_tx_process(sdiodev);
}
}
return 0;
}
int sdio_busrx_thread(void *data)
{
struct aicwf_rx_priv *rx_priv = (struct aicwf_rx_priv *)data;
struct aicwf_bus *bus_if = rx_priv->sdiodev->bus_if;
while (1) {
if(kthread_should_stop()) {
sdio_err("sdio busrx thread stop\n");
break;
}
if (!wait_for_completion_interruptible(&bus_if->busrx_trgg)) {
if(bus_if->state == BUS_DOWN_ST)
break;
aicwf_process_rxframes(rx_priv);
}
}
return 0;
}
static int aicwf_sdio_pwrctl_thread(void *data)
{
struct aic_sdio_dev *sdiodev = (struct aic_sdio_dev *) data;
while (1) {
if(kthread_should_stop()) {
sdio_err("sdio pwrctl thread stop\n");
break;
}
if (!wait_for_completion_interruptible(&sdiodev->pwrctrl_trgg)) {
if(sdiodev->bus_if->state == BUS_DOWN_ST)
break;
if (sdiodev->state == SDIO_ACTIVE_ST) {
if((int)(atomic_read(&sdiodev->tx_priv->tx_pktcnt) <= 0) && (sdiodev->tx_priv->cmd_txstate == false) && \
atomic_read(&sdiodev->rx_priv->rx_cnt)==0)
aicwf_sdio_pwr_stctl(sdiodev, SDIO_SLEEP_ST);
else
aicwf_sdio_pwrctl_timer(sdiodev, sdiodev->active_duration);
}
} else {
continue;
}
}
return 0;
}
#if LINUX_VERSION_CODE < KERNEL_VERSION(4,14,0)
static void aicwf_sdio_bus_pwrctl(ulong data)
#else
static void aicwf_sdio_bus_pwrctl(struct timer_list *t)
#endif
{
#if LINUX_VERSION_CODE < KERNEL_VERSION(4,14,0)
struct aic_sdio_dev *sdiodev = (struct aic_sdio_dev *) data;
#else
struct aic_sdio_dev *sdiodev = from_timer(sdiodev, t, timer);
#endif
if (sdiodev->bus_if->state == BUS_DOWN_ST) {
sdio_err("bus down\n");
return;
}
if (sdiodev->pwrctl_tsk){
complete(&sdiodev->pwrctrl_trgg);
}
}
static void aicwf_sdio_enq_rxpkt(struct aic_sdio_dev *sdiodev, struct sk_buff *pkt)
{
struct aicwf_rx_priv* rx_priv = sdiodev->rx_priv;
unsigned long flags = 0;
spin_lock_irqsave(&rx_priv->rxqlock, flags);
if (!aicwf_rxframe_enqueue(sdiodev->dev, &rx_priv->rxq, pkt)) {
spin_unlock_irqrestore(&rx_priv->rxqlock, flags);
aicwf_dev_skb_free(pkt);
return;
}
spin_unlock_irqrestore(&rx_priv->rxqlock, flags);
atomic_inc(&rx_priv->rx_cnt);
}
#define SDIO_OTHER_INTERRUPT (0x1ul << 7)
void aicwf_sdio_hal_irqhandler(struct sdio_func *func)
{
struct aicwf_bus *bus_if = dev_get_drvdata(&func->dev);
struct aic_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
u8 intstatus = 0;
u8 byte_len = 0;
struct sk_buff *pkt = NULL;
int ret;
if (!bus_if || bus_if->state == BUS_DOWN_ST) {
sdio_err("bus err\n");
return;
}
ret = aicwf_sdio_readb(sdiodev, SDIOWIFI_BLOCK_CNT_REG, &intstatus);
while(ret || (intstatus & SDIO_OTHER_INTERRUPT)) {
sdio_err("ret=%d, intstatus=%x\r\n",ret, intstatus);
ret = aicwf_sdio_readb(sdiodev, SDIOWIFI_BLOCK_CNT_REG, &intstatus);
}
sdiodev->rx_priv->data_len = intstatus * SDIOWIFI_FUNC_BLOCKSIZE;
if (intstatus > 0) {
if(intstatus < 64) {
pkt = aicwf_sdio_readframes(sdiodev);
} else {
aicwf_sdio_intr_get_len_bytemode(sdiodev, &byte_len);//byte_len must<= 128
sdio_info("byte mode len=%d\r\n", byte_len);
pkt = aicwf_sdio_readframes(sdiodev);
}
} else {
#ifndef CONFIG_PLATFORM_ALLWINNER
sdio_err("Interrupt but no data\n");
#endif
}
if (pkt)
aicwf_sdio_enq_rxpkt(sdiodev, pkt);
complete(&bus_if->busrx_trgg);
}
void aicwf_sdio_pwrctl_timer(struct aic_sdio_dev *sdiodev, uint duration)
{
uint timeout;
if (sdiodev->bus_if->state == BUS_DOWN_ST && duration)
return;
spin_lock_bh(&sdiodev->pwrctl_lock);
if (!duration) {
if (timer_pending(&sdiodev->timer))
del_timer_sync(&sdiodev->timer);
} else {
sdiodev->active_duration = duration;
timeout = msecs_to_jiffies(sdiodev->active_duration);
mod_timer(&sdiodev->timer, jiffies + timeout);
}
spin_unlock_bh(&sdiodev->pwrctl_lock);
}
static struct aicwf_bus_ops aicwf_sdio_bus_ops = {
.stop = aicwf_sdio_bus_stop,
.start = aicwf_sdio_bus_start,
.txdata = aicwf_sdio_bus_txdata,
.txmsg = aicwf_sdio_bus_txmsg,
};
void aicwf_sdio_release(struct aic_sdio_dev *sdiodev)
{
struct aicwf_bus *bus_if;
struct aicwf_rx_priv* rx_priv = NULL;
int ret;
sdio_dbg("%s\n", __func__);
bus_if = dev_get_drvdata(sdiodev->dev);
bus_if->state = BUS_DOWN_ST;
sdio_claim_host(sdiodev->func);
//disable sdio interrupt
ret = aicwf_sdio_writeb(sdiodev, SDIOWIFI_INTR_CONFIG_REG, 0x0);
if (ret < 0) {
sdio_err("reg:%d write failed!\n", SDIOWIFI_INTR_CONFIG_REG);
}
sdio_release_irq(sdiodev->func);
sdio_release_host(sdiodev->func);
if (sdiodev->dev)
aicwf_bus_deinit(sdiodev->dev);
aicwf_tx_deinit(sdiodev->tx_priv);
rx_priv = sdiodev->rx_priv;
if(rx_priv != NULL)
aicwf_rx_deinit(rx_priv);
rwnx_cmd_mgr_deinit(&sdiodev->cmd_mgr);
sdio_dbg("exit %s\n", __func__);
}
int aicwf_sdio_func_init(struct aic_sdio_dev *sdiodev)
{
struct mmc_host *host;
u8 block_bit0 = 0x1;
u8 byte_mode_disable = 0x1;//1: no byte mode
int ret = 0;
host = sdiodev->func->card->host;
sdio_claim_host(sdiodev->func);
ret = sdio_set_block_size(sdiodev->func, SDIOWIFI_FUNC_BLOCKSIZE);
if (ret < 0) {
sdio_err("set blocksize fail %d\n", ret);
sdio_release_host(sdiodev->func);
return ret;
}
ret = sdio_enable_func(sdiodev->func);
if (ret < 0) {
sdio_release_host(sdiodev->func);
sdio_err("enable func fail %d.\n", ret);
}
host->ios.clock = 60000000;
host->ops->set_ios(host, &host->ios);
sdio_release_host(sdiodev->func);
sdio_dbg("Set SDIO Clock %d MHz\n",host->ios.clock/1000000);
ret = aicwf_sdio_writeb(sdiodev, SDIOWIFI_REGISTER_BLOCK, block_bit0);
if (ret < 0) {
sdio_err("reg:%d write failed!\n", SDIOWIFI_REGISTER_BLOCK);
return ret;
}
//1: no byte mode
ret = aicwf_sdio_writeb(sdiodev, SDIOWIFI_BYTEMODE_ENABLE_REG, byte_mode_disable);
if (ret < 0) {
sdio_err("reg:%d write failed!\n", SDIOWIFI_BYTEMODE_ENABLE_REG);
return ret;
}
return ret;
}
void aicwf_sdio_func_deinit(struct aic_sdio_dev *sdiodev)
{
sdio_claim_host(sdiodev->func);
sdio_disable_func(sdiodev->func);
sdio_release_host(sdiodev->func);
}
void *aicwf_sdio_bus_init(struct aic_sdio_dev *sdiodev)
{
int ret;
struct aicwf_bus *bus_if;
struct aicwf_rx_priv *rx_priv;
struct aicwf_tx_priv *tx_priv;
spin_lock_init(&sdiodev->pwrctl_lock);
sema_init(&sdiodev->pwrctl_wakeup_sema, 1);
bus_if = sdiodev->bus_if;
bus_if->dev = sdiodev->dev;
bus_if->ops = &aicwf_sdio_bus_ops;
bus_if->state = BUS_DOWN_ST;
sdiodev->state = SDIO_SLEEP_ST;
sdiodev->active_duration = SDIOWIFI_PWR_CTRL_INTERVAL;
rx_priv = aicwf_rx_init(sdiodev);
if(!rx_priv) {
sdio_err("rx init fail\n");
goto fail;
}
sdiodev->rx_priv = rx_priv;
tx_priv = aicwf_tx_init(sdiodev);
if(!tx_priv) {
sdio_err("tx init fail\n");
goto fail;
}
sdiodev->tx_priv = tx_priv;
aicwf_frame_queue_init(&tx_priv->txq, 8, TXQLEN);
spin_lock_init(&tx_priv->txqlock);
sema_init(&tx_priv->txctl_sema,1);
sema_init(&tx_priv->cmd_txsema, 1);
init_waitqueue_head(&tx_priv->cmd_txdone_wait);
atomic_set(&tx_priv->tx_pktcnt, 0);
#if LINUX_VERSION_CODE < KERNEL_VERSION(4,14,0)
init_timer(&sdiodev->timer);
sdiodev->timer.data = (ulong) sdiodev;
sdiodev->timer.function = aicwf_sdio_bus_pwrctl;
#else
timer_setup(&sdiodev->timer, aicwf_sdio_bus_pwrctl, 0);
#endif
init_completion(&sdiodev->pwrctrl_trgg);
#ifdef AICWF_SDIO_SUPPORT
sdiodev->pwrctl_tsk = kthread_run(aicwf_sdio_pwrctl_thread, sdiodev, "aicwf_pwrctl");
#endif
if (IS_ERR(sdiodev->pwrctl_tsk)) {
sdiodev->pwrctl_tsk = NULL;
}
ret = aicwf_bus_init(0, sdiodev->dev);
if (ret < 0) {
sdio_err("bus init fail\n");
goto fail;
}
ret = aicwf_bus_start(bus_if);
if (ret != 0) {
sdio_err("bus start fail\n");
goto fail;
}
return sdiodev;
fail:
aicwf_sdio_release(sdiodev);
return NULL;
}
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