diff options
Diffstat (limited to 'drivers/net/wireless/aic8800/aic_load_fw/aic_txrxif.c')
| -rwxr-xr-x | drivers/net/wireless/aic8800/aic_load_fw/aic_txrxif.c | 487 |
1 files changed, 487 insertions, 0 deletions
diff --git a/drivers/net/wireless/aic8800/aic_load_fw/aic_txrxif.c b/drivers/net/wireless/aic8800/aic_load_fw/aic_txrxif.c new file mode 100755 index 000000000000..dc143781d6db --- /dev/null +++ b/drivers/net/wireless/aic8800/aic_load_fw/aic_txrxif.c @@ -0,0 +1,487 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/** + * aicwf_bus.c + * + * bus function declarations + * + * Copyright (C) AICSemi 2018-2020 + */ + +#include <linux/kthread.h> +#include <linux/netdevice.h> +#include <linux/printk.h> +#include <linux/interrupt.h> +#include <linux/sched.h> +#include <linux/completion.h> +#include <linux/semaphore.h> +#include <linux/debugfs.h> +#include <linux/atomic.h> +#include <linux/vmalloc.h> +#include <linux/version.h> +#ifdef CONFIG_PLATFORM_UBUNTU +#if LINUX_VERSION_CODE > KERNEL_VERSION(4, 10, 0) +#include <linux/sched/signal.h> +#endif +#endif +#include "aic_txrxif.h" +#include "aicbluetooth.h" +#include "aicbluetooth_cmds.h" + +int aicwf_bus_init(uint bus_hdrlen, struct device *dev) +{ + int ret = 0; + struct aicwf_bus *bus_if; + + if (!dev) { + txrx_err("device not found\n"); + return -1; + } + bus_if = dev_get_drvdata(dev); + #if defined CONFIG_USB_SUPPORT && defined CONFIG_USB_NO_TRANS_DMA_MAP + #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 35)) + bus_if->cmd_buf = usb_alloc_coherent(bus_if->bus_priv.usb->udev, CMD_BUF_MAX, (in_interrupt() ? GFP_ATOMIC : GFP_KERNEL), &bus_if->bus_priv.usb->cmd_dma_trans_addr); + #else + bus_if->cmd_buf = usb_buffer_alloc(bus_if->bus_priv.usb->udev, CMD_BUF_MAX, (in_interrupt() ? GFP_ATOMIC : GFP_KERNEL), &bus_if->bus_priv.usb->cmd_dma_trans_addr); + #endif + #else + bus_if->cmd_buf = kzalloc(CMD_BUF_MAX, GFP_KERNEL); + #endif + if(!bus_if->cmd_buf) { + ret = -ENOMEM; + txrx_err("proto_attach failed\n"); + goto fail; + } + memset(bus_if->cmd_buf, '\0', CMD_BUF_MAX); + + init_completion(&bus_if->bustx_trgg); + init_completion(&bus_if->busrx_trgg); +#ifdef AICWF_SDIO_SUPPORT + bus_if->bustx_thread = kthread_run(sdio_bustx_thread, (void *)bus_if, "aicwf_bustx_thread"); + bus_if->busrx_thread = kthread_run(sdio_busrx_thread, (void *)bus_if->bus_priv.sdio->rx_priv, "aicwf_busrx_thread"); +#endif +#ifdef AICWF_USB_SUPPORT + bus_if->bustx_thread = kthread_run(usb_bustx_thread, (void *)bus_if, "aicwf_bustx_thread"); + bus_if->busrx_thread = kthread_run(usb_busrx_thread, (void *)bus_if->bus_priv.usb->rx_priv, "aicwf_busrx_thread"); +#endif + + if (IS_ERR(bus_if->bustx_thread)) { + bus_if->bustx_thread = NULL; + txrx_err("aicwf_bustx_thread run fail\n"); + goto fail; + } + + if (IS_ERR(bus_if->busrx_thread)) { + bus_if->busrx_thread = NULL; + txrx_err("aicwf_bustx_thread run fail\n"); + goto fail; + } + + return ret; +fail: + aicwf_bus_deinit(dev); + + return ret; +} + +void aicwf_bus_deinit(struct device *dev) +{ + struct aicwf_bus *bus_if; + struct aic_usb_dev *usbdev; + + if (!dev) { + txrx_err("device not found\n"); + return; + } + printk("%s", __func__); + + mdelay(500); + bus_if = dev_get_drvdata(dev); + aicwf_bus_stop(bus_if); + + usbdev = bus_if->bus_priv.usb; + usbdev->app_cmp = false; + aic_bt_platform_deinit(usbdev); + + if (bus_if->cmd_buf) { + #if defined CONFIG_USB_SUPPORT && defined CONFIG_USB_NO_TRANS_DMA_MAP + #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 35)) + usb_free_coherent(bus_if->bus_priv.usb->udev, CMD_BUF_MAX, bus_if->cmd_buf, bus_if->bus_priv.usb->cmd_dma_trans_addr); + #else + usb_buffer_free(bus_if->bus_priv.usb->udev, CMD_BUF_MAX, bus_if->cmd_buf, bus_if->bus_priv.usb->cmd_dma_trans_addr); + #endif + #else + kfree(bus_if->cmd_buf); + #endif + bus_if->cmd_buf = NULL; + } + + if (bus_if->bustx_thread) { + complete_all(&bus_if->bustx_trgg); + kthread_stop(bus_if->bustx_thread); + bus_if->bustx_thread = NULL; + } + printk("exit %s\n", __func__); +} + +void aicwf_frame_tx(void *dev, struct sk_buff *skb) +{ + struct aic_usb_dev *usbdev = (struct aic_usb_dev *)dev; + aicwf_bus_txdata(usbdev->bus_if, skb); +} + +struct aicwf_tx_priv* aicwf_tx_init(void *arg) +{ + struct aicwf_tx_priv* tx_priv; + + tx_priv = kzalloc(sizeof(struct aicwf_tx_priv), GFP_KERNEL); + if (!tx_priv) + return NULL; + + tx_priv->usbdev = (struct aic_usb_dev *)arg; + + atomic_set(&tx_priv->aggr_count, 0); + tx_priv->aggr_buf = dev_alloc_skb(MAX_AGGR_TXPKT_LEN); + if(!tx_priv->aggr_buf) { + txrx_err("Alloc bus->txdata_buf failed!\n"); + kfree(tx_priv); + return NULL; + } + tx_priv->head = tx_priv->aggr_buf->data; + tx_priv->tail = tx_priv->aggr_buf->data; + + return tx_priv; +} + +void aicwf_tx_deinit(struct aicwf_tx_priv* tx_priv) +{ + if (tx_priv && tx_priv->aggr_buf) + dev_kfree_skb(tx_priv->aggr_buf); + + kfree(tx_priv); + tx_priv = NULL; +} + +static bool aicwf_another_ptk(struct sk_buff *skb) +{ + u8 *data; + u16 aggr_len = 0; + + if(skb->data == NULL || skb->len == 0) { + return false; + } + data = skb->data; + aggr_len = (*skb->data | (*(skb->data + 1) << 8)); + if(aggr_len == 0) { + return false; + } + + return true; +} + +int aicwf_process_rxframes(struct aicwf_rx_priv *rx_priv) +{ + int ret = 0; + unsigned long flags = 0; + struct sk_buff *skb = NULL; + u16 pkt_len = 0; + struct sk_buff *skb_inblock = NULL; + u16 aggr_len = 0, adjust_len = 0; + u8 *data = NULL; + + while (1) { + spin_lock_irqsave(&rx_priv->rxqlock, flags); + if(aicwf_is_framequeue_empty(&rx_priv->rxq)) { + spin_unlock_irqrestore(&rx_priv->rxqlock,flags); + break; + } + skb = aicwf_frame_dequeue(&rx_priv->rxq); + spin_unlock_irqrestore(&rx_priv->rxqlock,flags); + if (skb == NULL) { + txrx_err("skb_error\r\n"); + break; + } + while(aicwf_another_ptk(skb)) { + data = skb->data; + pkt_len = (*skb->data | (*(skb->data + 1) << 8)); + + if((skb->data[2] & USB_TYPE_CFG) != USB_TYPE_CFG) { // type : data + aggr_len = pkt_len + RX_HWHRD_LEN; + + if (aggr_len & (RX_ALIGNMENT - 1)) + adjust_len = roundup(aggr_len, RX_ALIGNMENT); + else + adjust_len = aggr_len; + + skb_inblock = __dev_alloc_skb(aggr_len + CCMP_OR_WEP_INFO, GFP_KERNEL);//8 is for ccmp mic or wep icv + if(skb_inblock == NULL){ + txrx_err("no more space!\n"); + aicwf_dev_skb_free(skb); + return -EBADE; + } + + skb_put(skb_inblock, aggr_len); + memcpy(skb_inblock->data, data, aggr_len); + skb_pull(skb, adjust_len); + } + else { // type : config + aggr_len = pkt_len; + + if (aggr_len & (RX_ALIGNMENT - 1)) + adjust_len = roundup(aggr_len, RX_ALIGNMENT); + else + adjust_len = aggr_len; + + skb_inblock = __dev_alloc_skb(aggr_len+4, GFP_KERNEL); + if(skb_inblock == NULL){ + txrx_err("no more space!\n"); + aicwf_dev_skb_free(skb); + return -EBADE; + } + + skb_put(skb_inblock, aggr_len+4); + memcpy(skb_inblock->data, data, aggr_len+4); + if((*(skb_inblock->data + 2) & 0x7f) == USB_TYPE_CFG_CMD_RSP) + rwnx_rx_handle_msg(rx_priv->usbdev, (struct ipc_e2a_msg *)(skb_inblock->data + 4)); + skb_pull(skb, adjust_len+4); + } + } + + dev_kfree_skb(skb); + atomic_dec(&rx_priv->rx_cnt); + } + + return ret; +} + +static struct recv_msdu *aicwf_rxframe_queue_init(struct list_head *q, int qsize) +{ + int i; + struct recv_msdu *req, *reqs; + + reqs = vmalloc(qsize*sizeof(struct recv_msdu)); + if (reqs == NULL) + return NULL; + + req = reqs; + for (i = 0; i < qsize; i++) { + INIT_LIST_HEAD(&req->rxframe_list); + list_add(&req->rxframe_list, q); + req->len = 0; + req++; + } + + return reqs; +} + +struct aicwf_rx_priv *aicwf_rx_init(void *arg) +{ + struct aicwf_rx_priv* rx_priv; + rx_priv = kzalloc(sizeof(struct aicwf_rx_priv), GFP_KERNEL); + if (!rx_priv) + return NULL; + + rx_priv->usbdev = (struct aic_usb_dev *)arg; + aicwf_frame_queue_init(&rx_priv->rxq, 1, MAX_RXQLEN); + spin_lock_init(&rx_priv->rxqlock); + atomic_set(&rx_priv->rx_cnt, 0); + + INIT_LIST_HEAD(&rx_priv->rxframes_freequeue); + spin_lock_init(&rx_priv->freeq_lock); + rx_priv->recv_frames = aicwf_rxframe_queue_init(&rx_priv->rxframes_freequeue, MAX_REORD_RXFRAME); + if (!rx_priv->recv_frames) { + txrx_err("no enough buffer for free recv frame queue!\n"); + kfree(rx_priv); + return NULL; + } + spin_lock_init(&rx_priv->stas_reord_lock); + INIT_LIST_HEAD(&rx_priv->stas_reord_list); + + return rx_priv; +} + + +static void aicwf_recvframe_queue_deinit(struct list_head *q) +{ + struct recv_msdu *req, *next; + + list_for_each_entry_safe(req, next, q, rxframe_list) { + list_del_init(&req->rxframe_list); + } +} + +void aicwf_rx_deinit(struct aicwf_rx_priv* rx_priv) +{ + //struct reord_ctrl_info *reord_info, *tmp; + aicwf_frame_queue_flush(&rx_priv->rxq); + aicwf_recvframe_queue_deinit(&rx_priv->rxframes_freequeue); + if (rx_priv->recv_frames) + vfree(rx_priv->recv_frames); + + if (rx_priv->usbdev->bus_if->busrx_thread) { + complete_all(&rx_priv->usbdev->bus_if->busrx_trgg); + send_sig(SIGTERM, rx_priv->usbdev->bus_if->busrx_thread, 1); + kthread_stop(rx_priv->usbdev->bus_if->busrx_thread); + rx_priv->usbdev->bus_if->busrx_thread = NULL; + } + + kfree(rx_priv); + rx_priv = NULL; +} + +bool aicwf_rxframe_enqueue(struct device *dev, struct frame_queue *q, struct sk_buff *pkt) +{ + return aicwf_frame_enq(dev, q, pkt, 0); +} + + +void aicwf_dev_skb_free(struct sk_buff *skb) +{ + if (!skb) + return; + + dev_kfree_skb_any(skb); +} + +static struct sk_buff *aicwf_frame_queue_penq(struct frame_queue *pq, int prio, struct sk_buff *p) +{ + struct sk_buff_head *q; + + if (pq->queuelist[prio].qlen >= pq->qmax) + return NULL; + + q = &pq->queuelist[prio]; + __skb_queue_tail(q, p); + pq->qcnt++; + if (pq->hi_prio < prio) + pq->hi_prio = (u16)prio; + + return p; +} + +void aicwf_frame_queue_flush(struct frame_queue *pq) +{ + int prio; + struct sk_buff_head *q; + struct sk_buff *p, *next; + + for (prio = 0; prio < pq->num_prio; prio++) + { + q = &pq->queuelist[prio]; + skb_queue_walk_safe(q, p, next) { + skb_unlink(p, q); + aicwf_dev_skb_free(p); + pq->qcnt--; + } + } +} + +void aicwf_frame_queue_init(struct frame_queue *pq, int num_prio, int max_len) +{ + int prio; + + memset(pq, 0, offsetof(struct frame_queue, queuelist) + (sizeof(struct sk_buff_head) * num_prio)); + pq->num_prio = (u16)num_prio; + pq->qmax = (u16)max_len; + + for (prio = 0; prio < num_prio; prio++) { + skb_queue_head_init(&pq->queuelist[prio]); + } +} + +struct sk_buff *aicwf_frame_queue_peek_tail(struct frame_queue *pq, int *prio_out) +{ + int prio; + + if (pq->qcnt == 0) + return NULL; + + for (prio = 0; prio < pq->hi_prio; prio++) + if (!skb_queue_empty(&pq->queuelist[prio])) + break; + + if (prio_out) + *prio_out = prio; + + return skb_peek_tail(&pq->queuelist[prio]); +} + +bool aicwf_is_framequeue_empty(struct frame_queue *pq) +{ + int prio, len = 0; + + for (prio = 0; prio <= pq->hi_prio; prio++) + len += pq->queuelist[prio].qlen; + + if(len > 0) + return false; + else + return true; +} + +struct sk_buff *aicwf_frame_dequeue(struct frame_queue *pq) +{ + struct sk_buff_head *q; + struct sk_buff *p; + int prio; + + if (pq->qcnt == 0) + return NULL; + + while ((prio = pq->hi_prio) > 0 && skb_queue_empty(&pq->queuelist[prio])) + pq->hi_prio--; + + q = &pq->queuelist[prio]; + p = __skb_dequeue(q); + if (p == NULL) + return NULL; + + pq->qcnt--; + + return p; +} + +static struct sk_buff *aicwf_skb_dequeue_tail(struct frame_queue *pq, int prio) +{ + struct sk_buff_head *q = &pq->queuelist[prio]; + struct sk_buff *p = skb_dequeue_tail(q); + + if (!p) + return NULL; + + pq->qcnt--; + return p; +} + +bool aicwf_frame_enq(struct device *dev, struct frame_queue *q, struct sk_buff *pkt, int prio) +{ + struct sk_buff *p = NULL; + int prio_modified = -1; + + if (q->queuelist[prio].qlen < q->qmax && q->qcnt < q->qmax) { + aicwf_frame_queue_penq(q, prio, pkt); + return true; + } + if (q->queuelist[prio].qlen >= q->qmax) { + prio_modified = prio; + } else if (q->qcnt >= q->qmax) { + p = aicwf_frame_queue_peek_tail(q, &prio_modified); + if (prio_modified > prio) + return false; + } + + if (prio_modified >= 0) { + if (prio_modified == prio) + return false; + + p = aicwf_skb_dequeue_tail(q, prio_modified); + aicwf_dev_skb_free(p); + + p = aicwf_frame_queue_penq(q, prio_modified, pkt); + if (p == NULL) + txrx_err("failed\n"); + } + + return p != NULL; +} + + |