diff options
Diffstat (limited to 'drivers/net/wireless/realtek/rtw89/usb.c')
| -rw-r--r-- | drivers/net/wireless/realtek/rtw89/usb.c | 1042 |
1 files changed, 1042 insertions, 0 deletions
diff --git a/drivers/net/wireless/realtek/rtw89/usb.c b/drivers/net/wireless/realtek/rtw89/usb.c new file mode 100644 index 000000000000..6cf89aee252e --- /dev/null +++ b/drivers/net/wireless/realtek/rtw89/usb.c @@ -0,0 +1,1042 @@ +// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause +/* Copyright(c) 2025 Realtek Corporation + */ + +#include <linux/usb.h> +#include "debug.h" +#include "mac.h" +#include "reg.h" +#include "txrx.h" +#include "usb.h" + +static void rtw89_usb_read_port_complete(struct urb *urb); + +static void rtw89_usb_vendorreq(struct rtw89_dev *rtwdev, u32 addr, + void *data, u16 len, u8 reqtype) +{ + struct rtw89_usb *rtwusb = rtw89_usb_priv(rtwdev); + struct usb_device *udev = rtwusb->udev; + unsigned int pipe; + u16 value, index; + int attempt, ret; + + if (test_bit(RTW89_FLAG_UNPLUGGED, rtwdev->flags)) + return; + + value = u32_get_bits(addr, GENMASK(15, 0)); + index = u32_get_bits(addr, GENMASK(23, 16)); + + for (attempt = 0; attempt < 10; attempt++) { + *rtwusb->vendor_req_buf = 0; + + if (reqtype == RTW89_USB_VENQT_READ) { + pipe = usb_rcvctrlpipe(udev, 0); + } else { /* RTW89_USB_VENQT_WRITE */ + pipe = usb_sndctrlpipe(udev, 0); + + memcpy(rtwusb->vendor_req_buf, data, len); + } + + ret = usb_control_msg(udev, pipe, RTW89_USB_VENQT, reqtype, + value, index, rtwusb->vendor_req_buf, + len, 500); + + if (ret == len) { /* Success */ + atomic_set(&rtwusb->continual_io_error, 0); + + if (reqtype == RTW89_USB_VENQT_READ) + memcpy(data, rtwusb->vendor_req_buf, len); + + break; + } + + if (ret == -ESHUTDOWN || ret == -ENODEV) + set_bit(RTW89_FLAG_UNPLUGGED, rtwdev->flags); + else if (ret < 0) + rtw89_warn(rtwdev, + "usb %s%u 0x%x fail ret=%d value=0x%x attempt=%d\n", + reqtype == RTW89_USB_VENQT_READ ? "read" : "write", + len * 8, addr, ret, + le32_to_cpup(rtwusb->vendor_req_buf), + attempt); + else if (ret > 0 && reqtype == RTW89_USB_VENQT_READ) + memcpy(data, rtwusb->vendor_req_buf, len); + + if (atomic_inc_return(&rtwusb->continual_io_error) > 4) { + set_bit(RTW89_FLAG_UNPLUGGED, rtwdev->flags); + break; + } + } +} + +static u32 rtw89_usb_read_cmac(struct rtw89_dev *rtwdev, u32 addr) +{ + u32 addr32, val32, shift; + __le32 data = 0; + int count; + + addr32 = addr & ~0x3; + shift = (addr & 0x3) * 8; + + for (count = 0; ; count++) { + rtw89_usb_vendorreq(rtwdev, addr32, &data, 4, + RTW89_USB_VENQT_READ); + + val32 = le32_to_cpu(data); + if (val32 != RTW89_R32_DEAD) + break; + + if (count >= MAC_REG_POOL_COUNT) { + rtw89_warn(rtwdev, "%s: addr %#x = %#x\n", + __func__, addr32, val32); + val32 = RTW89_R32_DEAD; + break; + } + + rtw89_write32(rtwdev, R_AX_CK_EN, B_AX_CMAC_ALLCKEN); + } + + return val32 >> shift; +} + +static u8 rtw89_usb_ops_read8(struct rtw89_dev *rtwdev, u32 addr) +{ + u8 data = 0; + + if (ACCESS_CMAC(addr)) + return rtw89_usb_read_cmac(rtwdev, addr); + + rtw89_usb_vendorreq(rtwdev, addr, &data, 1, RTW89_USB_VENQT_READ); + + return data; +} + +static u16 rtw89_usb_ops_read16(struct rtw89_dev *rtwdev, u32 addr) +{ + __le16 data = 0; + + if (ACCESS_CMAC(addr)) + return rtw89_usb_read_cmac(rtwdev, addr); + + rtw89_usb_vendorreq(rtwdev, addr, &data, 2, RTW89_USB_VENQT_READ); + + return le16_to_cpu(data); +} + +static u32 rtw89_usb_ops_read32(struct rtw89_dev *rtwdev, u32 addr) +{ + __le32 data = 0; + + if (ACCESS_CMAC(addr)) + return rtw89_usb_read_cmac(rtwdev, addr); + + rtw89_usb_vendorreq(rtwdev, addr, &data, 4, + RTW89_USB_VENQT_READ); + + return le32_to_cpu(data); +} + +static void rtw89_usb_ops_write8(struct rtw89_dev *rtwdev, u32 addr, u8 val) +{ + u8 data = val; + + rtw89_usb_vendorreq(rtwdev, addr, &data, 1, RTW89_USB_VENQT_WRITE); +} + +static void rtw89_usb_ops_write16(struct rtw89_dev *rtwdev, u32 addr, u16 val) +{ + __le16 data = cpu_to_le16(val); + + rtw89_usb_vendorreq(rtwdev, addr, &data, 2, RTW89_USB_VENQT_WRITE); +} + +static void rtw89_usb_ops_write32(struct rtw89_dev *rtwdev, u32 addr, u32 val) +{ + __le32 data = cpu_to_le32(val); + + rtw89_usb_vendorreq(rtwdev, addr, &data, 4, RTW89_USB_VENQT_WRITE); +} + +static u32 +rtw89_usb_ops_check_and_reclaim_tx_resource(struct rtw89_dev *rtwdev, + u8 txch) +{ + if (txch == RTW89_TXCH_CH12) + return 1; + + return 42; /* TODO some kind of calculation? */ +} + +static u8 rtw89_usb_get_bulkout_id(u8 ch_dma) +{ + switch (ch_dma) { + case RTW89_DMA_ACH0: + return 3; + case RTW89_DMA_ACH1: + return 4; + case RTW89_DMA_ACH2: + return 5; + case RTW89_DMA_ACH3: + return 6; + default: + case RTW89_DMA_B0MG: + return 0; + case RTW89_DMA_B0HI: + return 1; + case RTW89_DMA_H2C: + return 2; + } +} + +static void rtw89_usb_write_port_complete(struct urb *urb) +{ + struct rtw89_usb_tx_ctrl_block *txcb = urb->context; + struct rtw89_dev *rtwdev = txcb->rtwdev; + struct ieee80211_tx_info *info; + struct rtw89_txwd_body *txdesc; + struct sk_buff *skb; + u32 txdesc_size; + + while (true) { + skb = skb_dequeue(&txcb->tx_ack_queue); + if (!skb) + break; + + if (txcb->txch == RTW89_TXCH_CH12) { + dev_kfree_skb_any(skb); + continue; + } + + txdesc = (struct rtw89_txwd_body *)skb->data; + + txdesc_size = rtwdev->chip->txwd_body_size; + if (le32_get_bits(txdesc->dword0, RTW89_TXWD_BODY0_WD_INFO_EN)) + txdesc_size += rtwdev->chip->txwd_info_size; + + skb_pull(skb, txdesc_size); + + info = IEEE80211_SKB_CB(skb); + ieee80211_tx_info_clear_status(info); + + if (urb->status == 0) { + if (info->flags & IEEE80211_TX_CTL_NO_ACK) + info->flags |= IEEE80211_TX_STAT_NOACK_TRANSMITTED; + else + info->flags |= IEEE80211_TX_STAT_ACK; + } + + ieee80211_tx_status_irqsafe(rtwdev->hw, skb); + } + + switch (urb->status) { + case 0: + case -EPIPE: + case -EPROTO: + case -EINPROGRESS: + case -ENOENT: + case -ECONNRESET: + break; + default: + set_bit(RTW89_FLAG_UNPLUGGED, rtwdev->flags); + break; + } + + kfree(txcb); + usb_free_urb(urb); +} + +static int rtw89_usb_write_port(struct rtw89_dev *rtwdev, u8 ch_dma, + void *data, int len, void *context) +{ + struct rtw89_usb *rtwusb = rtw89_usb_priv(rtwdev); + struct usb_device *usbd = rtwusb->udev; + struct urb *urb; + u8 bulkout_id = rtw89_usb_get_bulkout_id(ch_dma); + unsigned int pipe; + int ret; + + if (test_bit(RTW89_FLAG_UNPLUGGED, rtwdev->flags)) + return 0; + + urb = usb_alloc_urb(0, GFP_ATOMIC); + if (!urb) + return -ENOMEM; + + pipe = usb_sndbulkpipe(usbd, rtwusb->out_pipe[bulkout_id]); + + usb_fill_bulk_urb(urb, usbd, pipe, data, len, + rtw89_usb_write_port_complete, context); + urb->transfer_flags |= URB_ZERO_PACKET; + ret = usb_submit_urb(urb, GFP_ATOMIC); + + if (ret) + usb_free_urb(urb); + + if (ret == -ENODEV) + set_bit(RTW89_FLAG_UNPLUGGED, rtwdev->flags); + + return ret; +} + +static void rtw89_usb_ops_tx_kick_off(struct rtw89_dev *rtwdev, u8 txch) +{ + struct rtw89_usb *rtwusb = rtw89_usb_priv(rtwdev); + struct rtw89_usb_tx_ctrl_block *txcb; + struct sk_buff *skb; + int ret; + + while (true) { + skb = skb_dequeue(&rtwusb->tx_queue[txch]); + if (!skb) + break; + + txcb = kmalloc(sizeof(*txcb), GFP_ATOMIC); + if (!txcb) { + dev_kfree_skb_any(skb); + continue; + } + + txcb->rtwdev = rtwdev; + txcb->txch = txch; + skb_queue_head_init(&txcb->tx_ack_queue); + + skb_queue_tail(&txcb->tx_ack_queue, skb); + + ret = rtw89_usb_write_port(rtwdev, txch, skb->data, skb->len, + txcb); + if (ret) { + rtw89_err(rtwdev, "write port txch %d failed: %d\n", + txch, ret); + + skb_dequeue(&txcb->tx_ack_queue); + kfree(txcb); + dev_kfree_skb_any(skb); + } + } +} + +static int rtw89_usb_tx_write_fwcmd(struct rtw89_dev *rtwdev, + struct rtw89_core_tx_request *tx_req) +{ + struct rtw89_tx_desc_info *desc_info = &tx_req->desc_info; + struct rtw89_usb *rtwusb = rtw89_usb_priv(rtwdev); + struct sk_buff *skb = tx_req->skb; + struct sk_buff *skb512; + u32 txdesc_size = rtwdev->chip->h2c_desc_size; + void *txdesc; + + if (((desc_info->pkt_size + txdesc_size) % 512) == 0) { + rtw89_debug(rtwdev, RTW89_DBG_HCI, "avoiding multiple of 512\n"); + + skb512 = dev_alloc_skb(txdesc_size + desc_info->pkt_size + + RTW89_USB_MOD512_PADDING); + if (!skb512) { + rtw89_err(rtwdev, "%s: failed to allocate skb\n", + __func__); + + return -ENOMEM; + } + + skb_pull(skb512, txdesc_size); + skb_put_data(skb512, skb->data, skb->len); + skb_put_zero(skb512, RTW89_USB_MOD512_PADDING); + + dev_kfree_skb_any(skb); + skb = skb512; + tx_req->skb = skb512; + + desc_info->pkt_size += RTW89_USB_MOD512_PADDING; + } + + txdesc = skb_push(skb, txdesc_size); + memset(txdesc, 0, txdesc_size); + rtw89_chip_fill_txdesc_fwcmd(rtwdev, desc_info, txdesc); + + skb_queue_tail(&rtwusb->tx_queue[desc_info->ch_dma], skb); + + return 0; +} + +static int rtw89_usb_ops_tx_write(struct rtw89_dev *rtwdev, + struct rtw89_core_tx_request *tx_req) +{ + struct rtw89_tx_desc_info *desc_info = &tx_req->desc_info; + struct rtw89_usb *rtwusb = rtw89_usb_priv(rtwdev); + struct sk_buff *skb = tx_req->skb; + struct rtw89_txwd_body *txdesc; + u32 txdesc_size; + + if ((desc_info->ch_dma == RTW89_TXCH_CH12 || + tx_req->tx_type == RTW89_CORE_TX_TYPE_FWCMD) && + (desc_info->ch_dma != RTW89_TXCH_CH12 || + tx_req->tx_type != RTW89_CORE_TX_TYPE_FWCMD)) { + rtw89_err(rtwdev, "dma channel %d/TX type %d mismatch\n", + desc_info->ch_dma, tx_req->tx_type); + return -EINVAL; + } + + if (desc_info->ch_dma == RTW89_TXCH_CH12) + return rtw89_usb_tx_write_fwcmd(rtwdev, tx_req); + + txdesc_size = rtwdev->chip->txwd_body_size; + if (desc_info->en_wd_info) + txdesc_size += rtwdev->chip->txwd_info_size; + + txdesc = skb_push(skb, txdesc_size); + memset(txdesc, 0, txdesc_size); + rtw89_chip_fill_txdesc(rtwdev, desc_info, txdesc); + + le32p_replace_bits(&txdesc->dword0, 1, RTW89_TXWD_BODY0_STF_MODE); + + skb_queue_tail(&rtwusb->tx_queue[desc_info->ch_dma], skb); + + return 0; +} + +static void rtw89_usb_rx_handler(struct work_struct *work) +{ + struct rtw89_usb *rtwusb = container_of(work, struct rtw89_usb, rx_work); + struct rtw89_dev *rtwdev = rtwusb->rtwdev; + struct rtw89_rx_desc_info desc_info; + struct sk_buff *rx_skb; + struct sk_buff *skb; + u32 pkt_offset; + int limit; + + for (limit = 0; limit < 200; limit++) { + rx_skb = skb_dequeue(&rtwusb->rx_queue); + if (!rx_skb) + break; + + if (skb_queue_len(&rtwusb->rx_queue) >= RTW89_USB_MAX_RXQ_LEN) { + rtw89_warn(rtwdev, "rx_queue overflow\n"); + dev_kfree_skb_any(rx_skb); + continue; + } + + memset(&desc_info, 0, sizeof(desc_info)); + rtw89_chip_query_rxdesc(rtwdev, &desc_info, rx_skb->data, 0); + + skb = rtw89_alloc_skb_for_rx(rtwdev, desc_info.pkt_size); + if (!skb) { + rtw89_debug(rtwdev, RTW89_DBG_HCI, + "failed to allocate RX skb of size %u\n", + desc_info.pkt_size); + continue; + } + + pkt_offset = desc_info.offset + desc_info.rxd_len; + + skb_put_data(skb, rx_skb->data + pkt_offset, + desc_info.pkt_size); + + rtw89_core_rx(rtwdev, &desc_info, skb); + + if (skb_queue_len(&rtwusb->rx_free_queue) >= RTW89_USB_RX_SKB_NUM) + dev_kfree_skb_any(rx_skb); + else + skb_queue_tail(&rtwusb->rx_free_queue, rx_skb); + } + + if (limit == 200) { + rtw89_debug(rtwdev, RTW89_DBG_HCI, + "left %d rx skbs in the queue for later\n", + skb_queue_len(&rtwusb->rx_queue)); + queue_work(rtwusb->rxwq, &rtwusb->rx_work); + } +} + +static void rtw89_usb_rx_resubmit(struct rtw89_usb *rtwusb, + struct rtw89_usb_rx_ctrl_block *rxcb, + gfp_t gfp) +{ + struct rtw89_dev *rtwdev = rtwusb->rtwdev; + struct sk_buff *rx_skb; + int ret; + + rx_skb = skb_dequeue(&rtwusb->rx_free_queue); + if (!rx_skb) + rx_skb = alloc_skb(RTW89_USB_RECVBUF_SZ, gfp); + + if (!rx_skb) + goto try_later; + + skb_reset_tail_pointer(rx_skb); + rx_skb->len = 0; + + rxcb->rx_skb = rx_skb; + + usb_fill_bulk_urb(rxcb->rx_urb, rtwusb->udev, + usb_rcvbulkpipe(rtwusb->udev, rtwusb->in_pipe), + rxcb->rx_skb->data, RTW89_USB_RECVBUF_SZ, + rtw89_usb_read_port_complete, rxcb); + + ret = usb_submit_urb(rxcb->rx_urb, gfp); + if (ret) { + skb_queue_tail(&rtwusb->rx_free_queue, rxcb->rx_skb); + + if (ret == -ENODEV) + set_bit(RTW89_FLAG_UNPLUGGED, rtwdev->flags); + else + rtw89_err(rtwdev, "Err sending rx data urb %d\n", ret); + + if (ret == -ENOMEM) + goto try_later; + } + + return; + +try_later: + rxcb->rx_skb = NULL; + queue_work(rtwusb->rxwq, &rtwusb->rx_urb_work); +} + +static void rtw89_usb_rx_resubmit_work(struct work_struct *work) +{ + struct rtw89_usb *rtwusb = container_of(work, struct rtw89_usb, rx_urb_work); + struct rtw89_usb_rx_ctrl_block *rxcb; + int i; + + for (i = 0; i < RTW89_USB_RXCB_NUM; i++) { + rxcb = &rtwusb->rx_cb[i]; + + if (!rxcb->rx_skb) + rtw89_usb_rx_resubmit(rtwusb, rxcb, GFP_ATOMIC); + } +} + +static void rtw89_usb_read_port_complete(struct urb *urb) +{ + struct rtw89_usb_rx_ctrl_block *rxcb = urb->context; + struct rtw89_dev *rtwdev = rxcb->rtwdev; + struct rtw89_usb *rtwusb = rtw89_usb_priv(rtwdev); + struct sk_buff *skb = rxcb->rx_skb; + + if (urb->status == 0) { + if (urb->actual_length > urb->transfer_buffer_length || + urb->actual_length < sizeof(struct rtw89_rxdesc_short)) { + rtw89_err(rtwdev, "failed to get urb length: %d\n", + urb->actual_length); + skb_queue_tail(&rtwusb->rx_free_queue, skb); + } else { + skb_put(skb, urb->actual_length); + skb_queue_tail(&rtwusb->rx_queue, skb); + queue_work(rtwusb->rxwq, &rtwusb->rx_work); + } + + rtw89_usb_rx_resubmit(rtwusb, rxcb, GFP_ATOMIC); + } else { + skb_queue_tail(&rtwusb->rx_free_queue, skb); + + if (atomic_inc_return(&rtwusb->continual_io_error) > 4) + set_bit(RTW89_FLAG_UNPLUGGED, rtwdev->flags); + + switch (urb->status) { + case -EINVAL: + case -EPIPE: + case -ENODEV: + case -ESHUTDOWN: + set_bit(RTW89_FLAG_UNPLUGGED, rtwdev->flags); + break; + case -EPROTO: + case -EILSEQ: + case -ETIME: + case -ECOMM: + case -EOVERFLOW: + case -ENOENT: + break; + case -EINPROGRESS: + rtw89_info(rtwdev, "URB is in progress\n"); + break; + default: + rtw89_err(rtwdev, "%s status %d\n", + __func__, urb->status); + break; + } + } +} + +static void rtw89_usb_cancel_rx_bufs(struct rtw89_usb *rtwusb) +{ + struct rtw89_usb_rx_ctrl_block *rxcb; + int i; + + for (i = 0; i < RTW89_USB_RXCB_NUM; i++) { + rxcb = &rtwusb->rx_cb[i]; + usb_kill_urb(rxcb->rx_urb); + } +} + +static void rtw89_usb_free_rx_bufs(struct rtw89_usb *rtwusb) +{ + struct rtw89_usb_rx_ctrl_block *rxcb; + int i; + + for (i = 0; i < RTW89_USB_RXCB_NUM; i++) { + rxcb = &rtwusb->rx_cb[i]; + usb_free_urb(rxcb->rx_urb); + } +} + +static int rtw89_usb_alloc_rx_bufs(struct rtw89_usb *rtwusb) +{ + struct rtw89_usb_rx_ctrl_block *rxcb; + int i; + + for (i = 0; i < RTW89_USB_RXCB_NUM; i++) { + rxcb = &rtwusb->rx_cb[i]; + + rxcb->rtwdev = rtwusb->rtwdev; + rxcb->rx_urb = usb_alloc_urb(0, GFP_KERNEL); + if (!rxcb->rx_urb) { + rtw89_usb_free_rx_bufs(rtwusb); + return -ENOMEM; + } + } + + return 0; +} + +static int rtw89_usb_init_rx(struct rtw89_dev *rtwdev) +{ + struct rtw89_usb *rtwusb = rtw89_usb_priv(rtwdev); + struct sk_buff *rx_skb; + int i; + + rtwusb->rxwq = alloc_workqueue("rtw89_usb: rx wq", WQ_BH, 0); + if (!rtwusb->rxwq) { + rtw89_err(rtwdev, "failed to create RX work queue\n"); + return -ENOMEM; + } + + skb_queue_head_init(&rtwusb->rx_queue); + skb_queue_head_init(&rtwusb->rx_free_queue); + + INIT_WORK(&rtwusb->rx_work, rtw89_usb_rx_handler); + INIT_WORK(&rtwusb->rx_urb_work, rtw89_usb_rx_resubmit_work); + + for (i = 0; i < RTW89_USB_RX_SKB_NUM; i++) { + rx_skb = alloc_skb(RTW89_USB_RECVBUF_SZ, GFP_KERNEL); + if (rx_skb) + skb_queue_tail(&rtwusb->rx_free_queue, rx_skb); + } + + return 0; +} + +static void rtw89_usb_deinit_rx(struct rtw89_dev *rtwdev) +{ + struct rtw89_usb *rtwusb = rtw89_usb_priv(rtwdev); + + skb_queue_purge(&rtwusb->rx_queue); + + destroy_workqueue(rtwusb->rxwq); + + skb_queue_purge(&rtwusb->rx_free_queue); +} + +static void rtw89_usb_start_rx(struct rtw89_dev *rtwdev) +{ + struct rtw89_usb *rtwusb = rtw89_usb_priv(rtwdev); + int i; + + for (i = 0; i < RTW89_USB_RXCB_NUM; i++) + rtw89_usb_rx_resubmit(rtwusb, &rtwusb->rx_cb[i], GFP_KERNEL); +} + +static void rtw89_usb_init_tx(struct rtw89_dev *rtwdev) +{ + struct rtw89_usb *rtwusb = rtw89_usb_priv(rtwdev); + int i; + + for (i = 0; i < ARRAY_SIZE(rtwusb->tx_queue); i++) + skb_queue_head_init(&rtwusb->tx_queue[i]); +} + +static void rtw89_usb_deinit_tx(struct rtw89_dev *rtwdev) +{ + struct rtw89_usb *rtwusb = rtw89_usb_priv(rtwdev); + int i; + + for (i = 0; i < ARRAY_SIZE(rtwusb->tx_queue); i++) { + if (i == RTW89_TXCH_CH12) + skb_queue_purge(&rtwusb->tx_queue[i]); + else + ieee80211_purge_tx_queue(rtwdev->hw, &rtwusb->tx_queue[i]); + } +} + +static void rtw89_usb_ops_reset(struct rtw89_dev *rtwdev) +{ + /* TODO: anything to do here? */ +} + +static int rtw89_usb_ops_start(struct rtw89_dev *rtwdev) +{ + return 0; /* Nothing to do. */ +} + +static void rtw89_usb_ops_stop(struct rtw89_dev *rtwdev) +{ + /* Nothing to do. */ +} + +static void rtw89_usb_ops_pause(struct rtw89_dev *rtwdev, bool pause) +{ + /* Nothing to do? */ +} + +static void rtw89_usb_ops_switch_mode(struct rtw89_dev *rtwdev, bool low_power) +{ + /* Nothing to do. */ +} + +static int rtw89_usb_ops_deinit(struct rtw89_dev *rtwdev) +{ + return 0; /* Nothing to do. */ +} + +static int rtw89_usb_ops_mac_pre_init(struct rtw89_dev *rtwdev) +{ + u32 val32; + + rtw89_write32_set(rtwdev, R_AX_USB_HOST_REQUEST_2, B_AX_R_USBIO_MODE); + + /* fix USB IO hang suggest by chihhanli@realtek.com */ + rtw89_write32_clr(rtwdev, R_AX_USB_WLAN0_1, + B_AX_USBRX_RST | B_AX_USBTX_RST); + + val32 = rtw89_read32(rtwdev, R_AX_HCI_FUNC_EN); + val32 &= ~(B_AX_HCI_RXDMA_EN | B_AX_HCI_TXDMA_EN); + rtw89_write32(rtwdev, R_AX_HCI_FUNC_EN, val32); + + val32 |= B_AX_HCI_RXDMA_EN | B_AX_HCI_TXDMA_EN; + rtw89_write32(rtwdev, R_AX_HCI_FUNC_EN, val32); + /* fix USB TRX hang suggest by chihhanli@realtek.com */ + + return 0; +} + +static int rtw89_usb_ops_mac_pre_deinit(struct rtw89_dev *rtwdev) +{ + return 0; /* Nothing to do. */ +} + +static int rtw89_usb_ops_mac_post_init(struct rtw89_dev *rtwdev) +{ + struct rtw89_usb *rtwusb = rtw89_usb_priv(rtwdev); + enum usb_device_speed speed; + u32 ep; + + rtw89_write32_clr(rtwdev, R_AX_USB3_MAC_NPI_CONFIG_INTF_0, + B_AX_SSPHY_LFPS_FILTER); + + speed = rtwusb->udev->speed; + + if (speed == USB_SPEED_SUPER) + rtw89_write8(rtwdev, R_AX_RXDMA_SETTING, USB3_BULKSIZE); + else if (speed == USB_SPEED_HIGH) + rtw89_write8(rtwdev, R_AX_RXDMA_SETTING, USB2_BULKSIZE); + else + rtw89_write8(rtwdev, R_AX_RXDMA_SETTING, USB11_BULKSIZE); + + for (ep = 5; ep <= 12; ep++) { + if (ep == 8) + continue; + + rtw89_write8_mask(rtwdev, R_AX_USB_ENDPOINT_0, + B_AX_EP_IDX, ep); + rtw89_write8(rtwdev, R_AX_USB_ENDPOINT_2 + 1, NUMP); + } + + return 0; +} + +static void rtw89_usb_ops_recalc_int_mit(struct rtw89_dev *rtwdev) +{ + /* Nothing to do. */ +} + +static int rtw89_usb_ops_mac_lv1_rcvy(struct rtw89_dev *rtwdev, + enum rtw89_lv1_rcvy_step step) +{ + u32 reg, mask; + + switch (rtwdev->chip->chip_id) { + case RTL8851B: + case RTL8852A: + case RTL8852B: + reg = R_AX_USB_WLAN0_1; + mask = B_AX_USBRX_RST | B_AX_USBTX_RST; + break; + case RTL8852C: + reg = R_AX_USB_WLAN0_1_V1; + mask = B_AX_USBRX_RST_V1 | B_AX_USBTX_RST_V1; + break; + default: + rtw89_err(rtwdev, "%s: fix me\n", __func__); + return -EOPNOTSUPP; + } + + switch (step) { + case RTW89_LV1_RCVY_STEP_1: + rtw89_write32_set(rtwdev, reg, mask); + + msleep(30); + break; + case RTW89_LV1_RCVY_STEP_2: + rtw89_write32_clr(rtwdev, reg, mask); + break; + default: + return -EINVAL; + } + + return 0; +} + +static void rtw89_usb_ops_dump_err_status(struct rtw89_dev *rtwdev) +{ + rtw89_warn(rtwdev, "%s TODO\n", __func__); +} + +static const struct rtw89_hci_ops rtw89_usb_ops = { + .tx_write = rtw89_usb_ops_tx_write, + .tx_kick_off = rtw89_usb_ops_tx_kick_off, + .flush_queues = NULL, /* Not needed? */ + .reset = rtw89_usb_ops_reset, + .start = rtw89_usb_ops_start, + .stop = rtw89_usb_ops_stop, + .pause = rtw89_usb_ops_pause, + .switch_mode = rtw89_usb_ops_switch_mode, + .recalc_int_mit = rtw89_usb_ops_recalc_int_mit, + + .read8 = rtw89_usb_ops_read8, + .read16 = rtw89_usb_ops_read16, + .read32 = rtw89_usb_ops_read32, + .write8 = rtw89_usb_ops_write8, + .write16 = rtw89_usb_ops_write16, + .write32 = rtw89_usb_ops_write32, + + .mac_pre_init = rtw89_usb_ops_mac_pre_init, + .mac_pre_deinit = rtw89_usb_ops_mac_pre_deinit, + .mac_post_init = rtw89_usb_ops_mac_post_init, + .deinit = rtw89_usb_ops_deinit, + + .check_and_reclaim_tx_resource = rtw89_usb_ops_check_and_reclaim_tx_resource, + .mac_lv1_rcvy = rtw89_usb_ops_mac_lv1_rcvy, + .dump_err_status = rtw89_usb_ops_dump_err_status, + .napi_poll = NULL, + + .recovery_start = NULL, + .recovery_complete = NULL, + + .ctrl_txdma_ch = NULL, + .ctrl_txdma_fw_ch = NULL, + .ctrl_trxhci = NULL, + .poll_txdma_ch_idle = NULL, + + .clr_idx_all = NULL, + .clear = NULL, + .disable_intr = NULL, + .enable_intr = NULL, + .rst_bdram = NULL, +}; + +static int rtw89_usb_parse(struct rtw89_dev *rtwdev, + struct usb_interface *intf) +{ + struct usb_host_interface *host_interface = &intf->altsetting[0]; + struct usb_interface_descriptor *intf_desc = &host_interface->desc; + struct rtw89_usb *rtwusb = rtw89_usb_priv(rtwdev); + struct usb_endpoint_descriptor *endpoint; + int num_out_pipes = 0; + u8 num; + int i; + + if (intf_desc->bNumEndpoints > RTW89_MAX_ENDPOINT_NUM) { + rtw89_err(rtwdev, "found %d endpoints, expected %d max\n", + intf_desc->bNumEndpoints, RTW89_MAX_ENDPOINT_NUM); + return -EINVAL; + } + + for (i = 0; i < intf_desc->bNumEndpoints; i++) { + endpoint = &host_interface->endpoint[i].desc; + num = usb_endpoint_num(endpoint); + + if (usb_endpoint_dir_in(endpoint) && + usb_endpoint_xfer_bulk(endpoint)) { + if (rtwusb->in_pipe) { + rtw89_err(rtwdev, + "found more than 1 bulk in endpoint\n"); + return -EINVAL; + } + + rtwusb->in_pipe = num; + } + + if (usb_endpoint_dir_out(endpoint) && + usb_endpoint_xfer_bulk(endpoint)) { + if (num_out_pipes >= RTW89_MAX_BULKOUT_NUM) { + rtw89_err(rtwdev, + "found more than %d bulk out endpoints\n", + RTW89_MAX_BULKOUT_NUM); + return -EINVAL; + } + + rtwusb->out_pipe[num_out_pipes++] = num; + } + } + + if (num_out_pipes < 1) { + rtw89_err(rtwdev, "no bulk out endpoints found\n"); + return -EINVAL; + } + + return 0; +} + +static int rtw89_usb_intf_init(struct rtw89_dev *rtwdev, + struct usb_interface *intf) +{ + struct rtw89_usb *rtwusb = rtw89_usb_priv(rtwdev); + int ret; + + ret = rtw89_usb_parse(rtwdev, intf); + if (ret) + return ret; + + rtwusb->vendor_req_buf = kmalloc(sizeof(*rtwusb->vendor_req_buf), + GFP_KERNEL); + if (!rtwusb->vendor_req_buf) + return -ENOMEM; + + rtwusb->udev = usb_get_dev(interface_to_usbdev(intf)); + + usb_set_intfdata(intf, rtwdev->hw); + + SET_IEEE80211_DEV(rtwdev->hw, &intf->dev); + + return 0; +} + +static void rtw89_usb_intf_deinit(struct rtw89_dev *rtwdev, + struct usb_interface *intf) +{ + struct rtw89_usb *rtwusb = rtw89_usb_priv(rtwdev); + + usb_put_dev(rtwusb->udev); + kfree(rtwusb->vendor_req_buf); + usb_set_intfdata(intf, NULL); +} + +int rtw89_usb_probe(struct usb_interface *intf, + const struct usb_device_id *id) +{ + const struct rtw89_driver_info *info; + struct rtw89_dev *rtwdev; + struct rtw89_usb *rtwusb; + int ret; + + info = (const struct rtw89_driver_info *)id->driver_info; + + rtwdev = rtw89_alloc_ieee80211_hw(&intf->dev, + sizeof(struct rtw89_usb), + info->chip, info->variant); + if (!rtwdev) { + dev_err(&intf->dev, "failed to allocate hw\n"); + return -ENOMEM; + } + + rtwusb = rtw89_usb_priv(rtwdev); + rtwusb->rtwdev = rtwdev; + + rtwdev->hci.ops = &rtw89_usb_ops; + rtwdev->hci.type = RTW89_HCI_TYPE_USB; + + ret = rtw89_usb_intf_init(rtwdev, intf); + if (ret) { + rtw89_err(rtwdev, "failed to initialise intf: %d\n", ret); + goto err_free_hw; + } + + if (rtwusb->udev->speed == USB_SPEED_SUPER) + rtwdev->hci.dle_type = RTW89_HCI_DLE_TYPE_USB3; + else + rtwdev->hci.dle_type = RTW89_HCI_DLE_TYPE_USB2; + + rtw89_usb_init_tx(rtwdev); + + ret = rtw89_usb_alloc_rx_bufs(rtwusb); + if (ret) + goto err_intf_deinit; + + ret = rtw89_usb_init_rx(rtwdev); + if (ret) + goto err_free_rx_bufs; + + ret = rtw89_core_init(rtwdev); + if (ret) { + rtw89_err(rtwdev, "failed to initialise core: %d\n", ret); + goto err_deinit_rx; + } + + ret = rtw89_chip_info_setup(rtwdev); + if (ret) { + rtw89_err(rtwdev, "failed to setup chip information\n"); + goto err_core_deinit; + } + + ret = rtw89_core_register(rtwdev); + if (ret) { + rtw89_err(rtwdev, "failed to register core\n"); + goto err_core_deinit; + } + + rtw89_usb_start_rx(rtwdev); + + set_bit(RTW89_FLAG_PROBE_DONE, rtwdev->flags); + + return 0; + +err_core_deinit: + rtw89_core_deinit(rtwdev); +err_deinit_rx: + rtw89_usb_deinit_rx(rtwdev); +err_free_rx_bufs: + rtw89_usb_free_rx_bufs(rtwusb); +err_intf_deinit: + rtw89_usb_intf_deinit(rtwdev, intf); +err_free_hw: + rtw89_free_ieee80211_hw(rtwdev); + + return ret; +} +EXPORT_SYMBOL(rtw89_usb_probe); + +void rtw89_usb_disconnect(struct usb_interface *intf) +{ + struct ieee80211_hw *hw = usb_get_intfdata(intf); + struct rtw89_dev *rtwdev; + struct rtw89_usb *rtwusb; + + if (!hw) + return; + + rtwdev = hw->priv; + rtwusb = rtw89_usb_priv(rtwdev); + + rtw89_usb_cancel_rx_bufs(rtwusb); + + rtw89_core_unregister(rtwdev); + rtw89_core_deinit(rtwdev); + rtw89_usb_deinit_rx(rtwdev); + rtw89_usb_free_rx_bufs(rtwusb); + rtw89_usb_deinit_tx(rtwdev); + rtw89_usb_intf_deinit(rtwdev, intf); + rtw89_free_ieee80211_hw(rtwdev); +} +EXPORT_SYMBOL(rtw89_usb_disconnect); + +MODULE_AUTHOR("Bitterblue Smith <rtl8821cerfe2@gmail.com>"); +MODULE_DESCRIPTION("Realtek USB 802.11ax wireless driver"); +MODULE_LICENSE("Dual BSD/GPL"); |