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1099 lines
27 KiB
1099 lines
27 KiB
// SPDX-License-Identifier: ISC |
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/* |
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* Copyright (c) 2007-2011 Atheros Communications Inc. |
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* Copyright (c) 2011-2012,2017 Qualcomm Atheros, Inc. |
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* Copyright (c) 2016-2017 Erik Stromdahl <[email protected]> |
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*/ |
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|
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#include <linux/module.h> |
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#include <linux/usb.h> |
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|
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#include "debug.h" |
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#include "core.h" |
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#include "bmi.h" |
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#include "hif.h" |
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#include "htc.h" |
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#include "usb.h" |
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|
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static void ath10k_usb_post_recv_transfers(struct ath10k *ar, |
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struct ath10k_usb_pipe *recv_pipe); |
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|
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/* inlined helper functions */ |
|
|
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static inline enum ath10k_htc_ep_id |
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eid_from_htc_hdr(struct ath10k_htc_hdr *htc_hdr) |
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{ |
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return (enum ath10k_htc_ep_id)htc_hdr->eid; |
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} |
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|
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static inline bool is_trailer_only_msg(struct ath10k_htc_hdr *htc_hdr) |
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{ |
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return __le16_to_cpu(htc_hdr->len) == htc_hdr->trailer_len; |
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} |
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|
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/* pipe/urb operations */ |
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static struct ath10k_urb_context * |
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ath10k_usb_alloc_urb_from_pipe(struct ath10k_usb_pipe *pipe) |
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{ |
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struct ath10k_urb_context *urb_context = NULL; |
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unsigned long flags; |
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|
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/* bail if this pipe is not initialized */ |
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if (!pipe->ar_usb) |
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return NULL; |
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|
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spin_lock_irqsave(&pipe->ar_usb->cs_lock, flags); |
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if (!list_empty(&pipe->urb_list_head)) { |
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urb_context = list_first_entry(&pipe->urb_list_head, |
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struct ath10k_urb_context, link); |
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list_del(&urb_context->link); |
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pipe->urb_cnt--; |
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} |
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spin_unlock_irqrestore(&pipe->ar_usb->cs_lock, flags); |
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|
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return urb_context; |
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} |
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|
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static void ath10k_usb_free_urb_to_pipe(struct ath10k_usb_pipe *pipe, |
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struct ath10k_urb_context *urb_context) |
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{ |
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unsigned long flags; |
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|
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/* bail if this pipe is not initialized */ |
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if (!pipe->ar_usb) |
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return; |
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|
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spin_lock_irqsave(&pipe->ar_usb->cs_lock, flags); |
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|
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pipe->urb_cnt++; |
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list_add(&urb_context->link, &pipe->urb_list_head); |
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|
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spin_unlock_irqrestore(&pipe->ar_usb->cs_lock, flags); |
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} |
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|
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static void ath10k_usb_cleanup_recv_urb(struct ath10k_urb_context *urb_context) |
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{ |
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dev_kfree_skb(urb_context->skb); |
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urb_context->skb = NULL; |
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|
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ath10k_usb_free_urb_to_pipe(urb_context->pipe, urb_context); |
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} |
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|
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static void ath10k_usb_free_pipe_resources(struct ath10k *ar, |
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struct ath10k_usb_pipe *pipe) |
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{ |
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struct ath10k_urb_context *urb_context; |
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|
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if (!pipe->ar_usb) { |
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/* nothing allocated for this pipe */ |
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return; |
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} |
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|
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ath10k_dbg(ar, ATH10K_DBG_USB, |
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"usb free resources lpipe %d hpipe 0x%x urbs %d avail %d\n", |
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pipe->logical_pipe_num, pipe->usb_pipe_handle, |
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pipe->urb_alloc, pipe->urb_cnt); |
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|
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if (pipe->urb_alloc != pipe->urb_cnt) { |
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ath10k_dbg(ar, ATH10K_DBG_USB, |
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"usb urb leak lpipe %d hpipe 0x%x urbs %d avail %d\n", |
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pipe->logical_pipe_num, pipe->usb_pipe_handle, |
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pipe->urb_alloc, pipe->urb_cnt); |
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} |
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|
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for (;;) { |
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urb_context = ath10k_usb_alloc_urb_from_pipe(pipe); |
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|
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if (!urb_context) |
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break; |
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|
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kfree(urb_context); |
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} |
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} |
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|
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static void ath10k_usb_cleanup_pipe_resources(struct ath10k *ar) |
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{ |
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struct ath10k_usb *ar_usb = ath10k_usb_priv(ar); |
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int i; |
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|
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for (i = 0; i < ATH10K_USB_PIPE_MAX; i++) |
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ath10k_usb_free_pipe_resources(ar, &ar_usb->pipes[i]); |
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} |
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|
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/* hif usb rx/tx completion functions */ |
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|
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static void ath10k_usb_recv_complete(struct urb *urb) |
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{ |
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struct ath10k_urb_context *urb_context = urb->context; |
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struct ath10k_usb_pipe *pipe = urb_context->pipe; |
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struct ath10k *ar = pipe->ar_usb->ar; |
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struct sk_buff *skb; |
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int status = 0; |
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|
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ath10k_dbg(ar, ATH10K_DBG_USB_BULK, |
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"usb recv pipe %d stat %d len %d urb 0x%pK\n", |
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pipe->logical_pipe_num, urb->status, urb->actual_length, |
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urb); |
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|
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if (urb->status != 0) { |
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status = -EIO; |
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switch (urb->status) { |
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case -ECONNRESET: |
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case -ENOENT: |
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case -ESHUTDOWN: |
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/* no need to spew these errors when device |
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* removed or urb killed due to driver shutdown |
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*/ |
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status = -ECANCELED; |
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break; |
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default: |
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ath10k_dbg(ar, ATH10K_DBG_USB_BULK, |
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"usb recv pipe %d ep 0x%2.2x failed: %d\n", |
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pipe->logical_pipe_num, |
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pipe->ep_address, urb->status); |
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break; |
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} |
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goto cleanup_recv_urb; |
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} |
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|
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if (urb->actual_length == 0) |
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goto cleanup_recv_urb; |
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|
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skb = urb_context->skb; |
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|
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/* we are going to pass it up */ |
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urb_context->skb = NULL; |
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skb_put(skb, urb->actual_length); |
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|
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/* note: queue implements a lock */ |
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skb_queue_tail(&pipe->io_comp_queue, skb); |
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schedule_work(&pipe->io_complete_work); |
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|
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cleanup_recv_urb: |
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ath10k_usb_cleanup_recv_urb(urb_context); |
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|
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if (status == 0 && |
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pipe->urb_cnt >= pipe->urb_cnt_thresh) { |
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/* our free urbs are piling up, post more transfers */ |
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ath10k_usb_post_recv_transfers(ar, pipe); |
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} |
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} |
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|
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static void ath10k_usb_transmit_complete(struct urb *urb) |
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{ |
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struct ath10k_urb_context *urb_context = urb->context; |
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struct ath10k_usb_pipe *pipe = urb_context->pipe; |
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struct ath10k *ar = pipe->ar_usb->ar; |
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struct sk_buff *skb; |
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|
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if (urb->status != 0) { |
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ath10k_dbg(ar, ATH10K_DBG_USB_BULK, |
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"pipe: %d, failed:%d\n", |
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pipe->logical_pipe_num, urb->status); |
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} |
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|
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skb = urb_context->skb; |
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urb_context->skb = NULL; |
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ath10k_usb_free_urb_to_pipe(urb_context->pipe, urb_context); |
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|
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/* note: queue implements a lock */ |
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skb_queue_tail(&pipe->io_comp_queue, skb); |
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schedule_work(&pipe->io_complete_work); |
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} |
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|
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/* pipe operations */ |
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static void ath10k_usb_post_recv_transfers(struct ath10k *ar, |
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struct ath10k_usb_pipe *recv_pipe) |
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{ |
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struct ath10k_urb_context *urb_context; |
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struct urb *urb; |
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int usb_status; |
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|
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for (;;) { |
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urb_context = ath10k_usb_alloc_urb_from_pipe(recv_pipe); |
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if (!urb_context) |
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break; |
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|
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urb_context->skb = dev_alloc_skb(ATH10K_USB_RX_BUFFER_SIZE); |
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if (!urb_context->skb) |
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goto err; |
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|
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urb = usb_alloc_urb(0, GFP_ATOMIC); |
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if (!urb) |
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goto err; |
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|
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usb_fill_bulk_urb(urb, |
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recv_pipe->ar_usb->udev, |
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recv_pipe->usb_pipe_handle, |
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urb_context->skb->data, |
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ATH10K_USB_RX_BUFFER_SIZE, |
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ath10k_usb_recv_complete, urb_context); |
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|
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ath10k_dbg(ar, ATH10K_DBG_USB_BULK, |
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"usb bulk recv submit %d 0x%x ep 0x%2.2x len %d buf 0x%pK\n", |
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recv_pipe->logical_pipe_num, |
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recv_pipe->usb_pipe_handle, recv_pipe->ep_address, |
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ATH10K_USB_RX_BUFFER_SIZE, urb_context->skb); |
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|
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usb_anchor_urb(urb, &recv_pipe->urb_submitted); |
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usb_status = usb_submit_urb(urb, GFP_ATOMIC); |
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|
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if (usb_status) { |
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ath10k_dbg(ar, ATH10K_DBG_USB_BULK, |
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"usb bulk recv failed: %d\n", |
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usb_status); |
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usb_unanchor_urb(urb); |
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usb_free_urb(urb); |
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goto err; |
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} |
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usb_free_urb(urb); |
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} |
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|
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return; |
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|
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err: |
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ath10k_usb_cleanup_recv_urb(urb_context); |
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} |
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|
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static void ath10k_usb_flush_all(struct ath10k *ar) |
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{ |
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struct ath10k_usb *ar_usb = ath10k_usb_priv(ar); |
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int i; |
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|
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for (i = 0; i < ATH10K_USB_PIPE_MAX; i++) { |
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if (ar_usb->pipes[i].ar_usb) { |
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usb_kill_anchored_urbs(&ar_usb->pipes[i].urb_submitted); |
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cancel_work_sync(&ar_usb->pipes[i].io_complete_work); |
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} |
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} |
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} |
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|
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static void ath10k_usb_start_recv_pipes(struct ath10k *ar) |
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{ |
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struct ath10k_usb *ar_usb = ath10k_usb_priv(ar); |
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|
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ar_usb->pipes[ATH10K_USB_PIPE_RX_DATA].urb_cnt_thresh = 1; |
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|
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ath10k_usb_post_recv_transfers(ar, |
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&ar_usb->pipes[ATH10K_USB_PIPE_RX_DATA]); |
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} |
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|
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static void ath10k_usb_tx_complete(struct ath10k *ar, struct sk_buff *skb) |
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{ |
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struct ath10k_htc_hdr *htc_hdr; |
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struct ath10k_htc_ep *ep; |
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|
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htc_hdr = (struct ath10k_htc_hdr *)skb->data; |
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ep = &ar->htc.endpoint[htc_hdr->eid]; |
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ath10k_htc_notify_tx_completion(ep, skb); |
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/* The TX complete handler now owns the skb... */ |
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} |
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|
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static void ath10k_usb_rx_complete(struct ath10k *ar, struct sk_buff *skb) |
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{ |
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struct ath10k_htc *htc = &ar->htc; |
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struct ath10k_htc_hdr *htc_hdr; |
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enum ath10k_htc_ep_id eid; |
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struct ath10k_htc_ep *ep; |
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u16 payload_len; |
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u8 *trailer; |
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int ret; |
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|
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htc_hdr = (struct ath10k_htc_hdr *)skb->data; |
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eid = eid_from_htc_hdr(htc_hdr); |
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ep = &ar->htc.endpoint[eid]; |
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|
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if (ep->service_id == 0) { |
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ath10k_warn(ar, "ep %d is not connected\n", eid); |
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goto out_free_skb; |
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} |
|
|
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payload_len = le16_to_cpu(htc_hdr->len); |
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if (!payload_len) { |
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ath10k_warn(ar, "zero length frame received, firmware crashed?\n"); |
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goto out_free_skb; |
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} |
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|
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if (payload_len < htc_hdr->trailer_len) { |
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ath10k_warn(ar, "malformed frame received, firmware crashed?\n"); |
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goto out_free_skb; |
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} |
|
|
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if (htc_hdr->flags & ATH10K_HTC_FLAG_TRAILER_PRESENT) { |
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trailer = skb->data + sizeof(*htc_hdr) + payload_len - |
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htc_hdr->trailer_len; |
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|
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ret = ath10k_htc_process_trailer(htc, |
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trailer, |
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htc_hdr->trailer_len, |
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eid, |
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NULL, |
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NULL); |
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if (ret) |
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goto out_free_skb; |
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|
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if (is_trailer_only_msg(htc_hdr)) |
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goto out_free_skb; |
|
|
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/* strip off the trailer from the skb since it should not |
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* be passed on to upper layers |
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*/ |
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skb_trim(skb, skb->len - htc_hdr->trailer_len); |
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} |
|
|
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skb_pull(skb, sizeof(*htc_hdr)); |
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ep->ep_ops.ep_rx_complete(ar, skb); |
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/* The RX complete handler now owns the skb... */ |
|
|
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return; |
|
|
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out_free_skb: |
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dev_kfree_skb(skb); |
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} |
|
|
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static void ath10k_usb_io_comp_work(struct work_struct *work) |
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{ |
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struct ath10k_usb_pipe *pipe = container_of(work, |
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struct ath10k_usb_pipe, |
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io_complete_work); |
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struct ath10k *ar = pipe->ar_usb->ar; |
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struct sk_buff *skb; |
|
|
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while ((skb = skb_dequeue(&pipe->io_comp_queue))) { |
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if (pipe->flags & ATH10K_USB_PIPE_FLAG_TX) |
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ath10k_usb_tx_complete(ar, skb); |
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else |
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ath10k_usb_rx_complete(ar, skb); |
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} |
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} |
|
|
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#define ATH10K_USB_MAX_DIAG_CMD (sizeof(struct ath10k_usb_ctrl_diag_cmd_write)) |
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#define ATH10K_USB_MAX_DIAG_RESP (sizeof(struct ath10k_usb_ctrl_diag_resp_read)) |
|
|
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static void ath10k_usb_destroy(struct ath10k *ar) |
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{ |
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struct ath10k_usb *ar_usb = ath10k_usb_priv(ar); |
|
|
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ath10k_usb_flush_all(ar); |
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ath10k_usb_cleanup_pipe_resources(ar); |
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usb_set_intfdata(ar_usb->interface, NULL); |
|
|
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kfree(ar_usb->diag_cmd_buffer); |
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kfree(ar_usb->diag_resp_buffer); |
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} |
|
|
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static int ath10k_usb_hif_start(struct ath10k *ar) |
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{ |
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int i; |
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struct ath10k_usb *ar_usb = ath10k_usb_priv(ar); |
|
|
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ath10k_usb_start_recv_pipes(ar); |
|
|
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/* set the TX resource avail threshold for each TX pipe */ |
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for (i = ATH10K_USB_PIPE_TX_CTRL; |
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i <= ATH10K_USB_PIPE_TX_DATA_HP; i++) { |
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ar_usb->pipes[i].urb_cnt_thresh = |
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ar_usb->pipes[i].urb_alloc / 2; |
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} |
|
|
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return 0; |
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} |
|
|
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static int ath10k_usb_hif_tx_sg(struct ath10k *ar, u8 pipe_id, |
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struct ath10k_hif_sg_item *items, int n_items) |
|
{ |
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struct ath10k_usb *ar_usb = ath10k_usb_priv(ar); |
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struct ath10k_usb_pipe *pipe = &ar_usb->pipes[pipe_id]; |
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struct ath10k_urb_context *urb_context; |
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struct sk_buff *skb; |
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struct urb *urb; |
|
int ret, i; |
|
|
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for (i = 0; i < n_items; i++) { |
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urb_context = ath10k_usb_alloc_urb_from_pipe(pipe); |
|
if (!urb_context) { |
|
ret = -ENOMEM; |
|
goto err; |
|
} |
|
|
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skb = items[i].transfer_context; |
|
urb_context->skb = skb; |
|
|
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urb = usb_alloc_urb(0, GFP_ATOMIC); |
|
if (!urb) { |
|
ret = -ENOMEM; |
|
goto err_free_urb_to_pipe; |
|
} |
|
|
|
usb_fill_bulk_urb(urb, |
|
ar_usb->udev, |
|
pipe->usb_pipe_handle, |
|
skb->data, |
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skb->len, |
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ath10k_usb_transmit_complete, urb_context); |
|
|
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if (!(skb->len % pipe->max_packet_size)) { |
|
/* hit a max packet boundary on this pipe */ |
|
urb->transfer_flags |= URB_ZERO_PACKET; |
|
} |
|
|
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usb_anchor_urb(urb, &pipe->urb_submitted); |
|
ret = usb_submit_urb(urb, GFP_ATOMIC); |
|
if (ret) { |
|
ath10k_dbg(ar, ATH10K_DBG_USB_BULK, |
|
"usb bulk transmit failed: %d\n", ret); |
|
usb_unanchor_urb(urb); |
|
usb_free_urb(urb); |
|
ret = -EINVAL; |
|
goto err_free_urb_to_pipe; |
|
} |
|
|
|
usb_free_urb(urb); |
|
} |
|
|
|
return 0; |
|
|
|
err_free_urb_to_pipe: |
|
ath10k_usb_free_urb_to_pipe(urb_context->pipe, urb_context); |
|
err: |
|
return ret; |
|
} |
|
|
|
static void ath10k_usb_hif_stop(struct ath10k *ar) |
|
{ |
|
ath10k_usb_flush_all(ar); |
|
} |
|
|
|
static u16 ath10k_usb_hif_get_free_queue_number(struct ath10k *ar, u8 pipe_id) |
|
{ |
|
struct ath10k_usb *ar_usb = ath10k_usb_priv(ar); |
|
|
|
return ar_usb->pipes[pipe_id].urb_cnt; |
|
} |
|
|
|
static int ath10k_usb_submit_ctrl_out(struct ath10k *ar, |
|
u8 req, u16 value, u16 index, void *data, |
|
u32 size) |
|
{ |
|
struct ath10k_usb *ar_usb = ath10k_usb_priv(ar); |
|
u8 *buf = NULL; |
|
int ret; |
|
|
|
if (size > 0) { |
|
buf = kmemdup(data, size, GFP_KERNEL); |
|
if (!buf) |
|
return -ENOMEM; |
|
} |
|
|
|
/* note: if successful returns number of bytes transferred */ |
|
ret = usb_control_msg(ar_usb->udev, |
|
usb_sndctrlpipe(ar_usb->udev, 0), |
|
req, |
|
USB_DIR_OUT | USB_TYPE_VENDOR | |
|
USB_RECIP_DEVICE, value, index, buf, |
|
size, 1000); |
|
|
|
if (ret < 0) { |
|
ath10k_warn(ar, "Failed to submit usb control message: %d\n", |
|
ret); |
|
kfree(buf); |
|
return ret; |
|
} |
|
|
|
kfree(buf); |
|
|
|
return 0; |
|
} |
|
|
|
static int ath10k_usb_submit_ctrl_in(struct ath10k *ar, |
|
u8 req, u16 value, u16 index, void *data, |
|
u32 size) |
|
{ |
|
struct ath10k_usb *ar_usb = ath10k_usb_priv(ar); |
|
u8 *buf = NULL; |
|
int ret; |
|
|
|
if (size > 0) { |
|
buf = kmalloc(size, GFP_KERNEL); |
|
if (!buf) |
|
return -ENOMEM; |
|
} |
|
|
|
/* note: if successful returns number of bytes transferred */ |
|
ret = usb_control_msg(ar_usb->udev, |
|
usb_rcvctrlpipe(ar_usb->udev, 0), |
|
req, |
|
USB_DIR_IN | USB_TYPE_VENDOR | |
|
USB_RECIP_DEVICE, value, index, buf, |
|
size, 2 * HZ); |
|
|
|
if (ret < 0) { |
|
ath10k_warn(ar, "Failed to read usb control message: %d\n", |
|
ret); |
|
kfree(buf); |
|
return ret; |
|
} |
|
|
|
memcpy((u8 *)data, buf, size); |
|
|
|
kfree(buf); |
|
|
|
return 0; |
|
} |
|
|
|
static int ath10k_usb_ctrl_msg_exchange(struct ath10k *ar, |
|
u8 req_val, u8 *req_buf, u32 req_len, |
|
u8 resp_val, u8 *resp_buf, |
|
u32 *resp_len) |
|
{ |
|
int ret; |
|
|
|
/* send command */ |
|
ret = ath10k_usb_submit_ctrl_out(ar, req_val, 0, 0, |
|
req_buf, req_len); |
|
if (ret) |
|
goto err; |
|
|
|
/* get response */ |
|
if (resp_buf) { |
|
ret = ath10k_usb_submit_ctrl_in(ar, resp_val, 0, 0, |
|
resp_buf, *resp_len); |
|
if (ret) |
|
goto err; |
|
} |
|
|
|
return 0; |
|
err: |
|
return ret; |
|
} |
|
|
|
static int ath10k_usb_hif_diag_read(struct ath10k *ar, u32 address, void *buf, |
|
size_t buf_len) |
|
{ |
|
struct ath10k_usb *ar_usb = ath10k_usb_priv(ar); |
|
struct ath10k_usb_ctrl_diag_cmd_read *cmd; |
|
u32 resp_len; |
|
int ret; |
|
|
|
if (buf_len < sizeof(struct ath10k_usb_ctrl_diag_resp_read)) |
|
return -EINVAL; |
|
|
|
cmd = (struct ath10k_usb_ctrl_diag_cmd_read *)ar_usb->diag_cmd_buffer; |
|
memset(cmd, 0, sizeof(*cmd)); |
|
cmd->cmd = ATH10K_USB_CTRL_DIAG_CC_READ; |
|
cmd->address = cpu_to_le32(address); |
|
resp_len = sizeof(struct ath10k_usb_ctrl_diag_resp_read); |
|
|
|
ret = ath10k_usb_ctrl_msg_exchange(ar, |
|
ATH10K_USB_CONTROL_REQ_DIAG_CMD, |
|
(u8 *)cmd, |
|
sizeof(*cmd), |
|
ATH10K_USB_CONTROL_REQ_DIAG_RESP, |
|
ar_usb->diag_resp_buffer, &resp_len); |
|
if (ret) |
|
return ret; |
|
|
|
if (resp_len != sizeof(struct ath10k_usb_ctrl_diag_resp_read)) |
|
return -EMSGSIZE; |
|
|
|
memcpy(buf, ar_usb->diag_resp_buffer, |
|
sizeof(struct ath10k_usb_ctrl_diag_resp_read)); |
|
|
|
return 0; |
|
} |
|
|
|
static int ath10k_usb_hif_diag_write(struct ath10k *ar, u32 address, |
|
const void *data, int nbytes) |
|
{ |
|
struct ath10k_usb *ar_usb = ath10k_usb_priv(ar); |
|
struct ath10k_usb_ctrl_diag_cmd_write *cmd; |
|
int ret; |
|
|
|
if (nbytes != sizeof(cmd->value)) |
|
return -EINVAL; |
|
|
|
cmd = (struct ath10k_usb_ctrl_diag_cmd_write *)ar_usb->diag_cmd_buffer; |
|
memset(cmd, 0, sizeof(*cmd)); |
|
cmd->cmd = cpu_to_le32(ATH10K_USB_CTRL_DIAG_CC_WRITE); |
|
cmd->address = cpu_to_le32(address); |
|
memcpy(&cmd->value, data, nbytes); |
|
|
|
ret = ath10k_usb_ctrl_msg_exchange(ar, |
|
ATH10K_USB_CONTROL_REQ_DIAG_CMD, |
|
(u8 *)cmd, |
|
sizeof(*cmd), |
|
0, NULL, NULL); |
|
if (ret) |
|
return ret; |
|
|
|
return 0; |
|
} |
|
|
|
static int ath10k_usb_bmi_exchange_msg(struct ath10k *ar, |
|
void *req, u32 req_len, |
|
void *resp, u32 *resp_len) |
|
{ |
|
int ret; |
|
|
|
if (req) { |
|
ret = ath10k_usb_submit_ctrl_out(ar, |
|
ATH10K_USB_CONTROL_REQ_SEND_BMI_CMD, |
|
0, 0, req, req_len); |
|
if (ret) { |
|
ath10k_warn(ar, |
|
"unable to send the bmi data to the device: %d\n", |
|
ret); |
|
return ret; |
|
} |
|
} |
|
|
|
if (resp) { |
|
ret = ath10k_usb_submit_ctrl_in(ar, |
|
ATH10K_USB_CONTROL_REQ_RECV_BMI_RESP, |
|
0, 0, resp, *resp_len); |
|
if (ret) { |
|
ath10k_warn(ar, |
|
"Unable to read the bmi data from the device: %d\n", |
|
ret); |
|
return ret; |
|
} |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static void ath10k_usb_hif_get_default_pipe(struct ath10k *ar, |
|
u8 *ul_pipe, u8 *dl_pipe) |
|
{ |
|
*ul_pipe = ATH10K_USB_PIPE_TX_CTRL; |
|
*dl_pipe = ATH10K_USB_PIPE_RX_CTRL; |
|
} |
|
|
|
static int ath10k_usb_hif_map_service_to_pipe(struct ath10k *ar, u16 svc_id, |
|
u8 *ul_pipe, u8 *dl_pipe) |
|
{ |
|
switch (svc_id) { |
|
case ATH10K_HTC_SVC_ID_RSVD_CTRL: |
|
case ATH10K_HTC_SVC_ID_WMI_CONTROL: |
|
*ul_pipe = ATH10K_USB_PIPE_TX_CTRL; |
|
/* due to large control packets, shift to data pipe */ |
|
*dl_pipe = ATH10K_USB_PIPE_RX_DATA; |
|
break; |
|
case ATH10K_HTC_SVC_ID_HTT_DATA_MSG: |
|
*ul_pipe = ATH10K_USB_PIPE_TX_DATA_LP; |
|
/* Disable rxdata2 directly, it will be enabled |
|
* if FW enable rxdata2 |
|
*/ |
|
*dl_pipe = ATH10K_USB_PIPE_RX_DATA; |
|
break; |
|
default: |
|
return -EPERM; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static int ath10k_usb_hif_power_up(struct ath10k *ar, |
|
enum ath10k_firmware_mode fw_mode) |
|
{ |
|
return 0; |
|
} |
|
|
|
static void ath10k_usb_hif_power_down(struct ath10k *ar) |
|
{ |
|
ath10k_usb_flush_all(ar); |
|
} |
|
|
|
#ifdef CONFIG_PM |
|
|
|
static int ath10k_usb_hif_suspend(struct ath10k *ar) |
|
{ |
|
return -EOPNOTSUPP; |
|
} |
|
|
|
static int ath10k_usb_hif_resume(struct ath10k *ar) |
|
{ |
|
return -EOPNOTSUPP; |
|
} |
|
#endif |
|
|
|
static const struct ath10k_hif_ops ath10k_usb_hif_ops = { |
|
.tx_sg = ath10k_usb_hif_tx_sg, |
|
.diag_read = ath10k_usb_hif_diag_read, |
|
.diag_write = ath10k_usb_hif_diag_write, |
|
.exchange_bmi_msg = ath10k_usb_bmi_exchange_msg, |
|
.start = ath10k_usb_hif_start, |
|
.stop = ath10k_usb_hif_stop, |
|
.map_service_to_pipe = ath10k_usb_hif_map_service_to_pipe, |
|
.get_default_pipe = ath10k_usb_hif_get_default_pipe, |
|
.get_free_queue_number = ath10k_usb_hif_get_free_queue_number, |
|
.power_up = ath10k_usb_hif_power_up, |
|
.power_down = ath10k_usb_hif_power_down, |
|
#ifdef CONFIG_PM |
|
.suspend = ath10k_usb_hif_suspend, |
|
.resume = ath10k_usb_hif_resume, |
|
#endif |
|
}; |
|
|
|
static u8 ath10k_usb_get_logical_pipe_num(u8 ep_address, int *urb_count) |
|
{ |
|
u8 pipe_num = ATH10K_USB_PIPE_INVALID; |
|
|
|
switch (ep_address) { |
|
case ATH10K_USB_EP_ADDR_APP_CTRL_IN: |
|
pipe_num = ATH10K_USB_PIPE_RX_CTRL; |
|
*urb_count = RX_URB_COUNT; |
|
break; |
|
case ATH10K_USB_EP_ADDR_APP_DATA_IN: |
|
pipe_num = ATH10K_USB_PIPE_RX_DATA; |
|
*urb_count = RX_URB_COUNT; |
|
break; |
|
case ATH10K_USB_EP_ADDR_APP_INT_IN: |
|
pipe_num = ATH10K_USB_PIPE_RX_INT; |
|
*urb_count = RX_URB_COUNT; |
|
break; |
|
case ATH10K_USB_EP_ADDR_APP_DATA2_IN: |
|
pipe_num = ATH10K_USB_PIPE_RX_DATA2; |
|
*urb_count = RX_URB_COUNT; |
|
break; |
|
case ATH10K_USB_EP_ADDR_APP_CTRL_OUT: |
|
pipe_num = ATH10K_USB_PIPE_TX_CTRL; |
|
*urb_count = TX_URB_COUNT; |
|
break; |
|
case ATH10K_USB_EP_ADDR_APP_DATA_LP_OUT: |
|
pipe_num = ATH10K_USB_PIPE_TX_DATA_LP; |
|
*urb_count = TX_URB_COUNT; |
|
break; |
|
case ATH10K_USB_EP_ADDR_APP_DATA_MP_OUT: |
|
pipe_num = ATH10K_USB_PIPE_TX_DATA_MP; |
|
*urb_count = TX_URB_COUNT; |
|
break; |
|
case ATH10K_USB_EP_ADDR_APP_DATA_HP_OUT: |
|
pipe_num = ATH10K_USB_PIPE_TX_DATA_HP; |
|
*urb_count = TX_URB_COUNT; |
|
break; |
|
default: |
|
/* note: there may be endpoints not currently used */ |
|
break; |
|
} |
|
|
|
return pipe_num; |
|
} |
|
|
|
static int ath10k_usb_alloc_pipe_resources(struct ath10k *ar, |
|
struct ath10k_usb_pipe *pipe, |
|
int urb_cnt) |
|
{ |
|
struct ath10k_urb_context *urb_context; |
|
int i; |
|
|
|
INIT_LIST_HEAD(&pipe->urb_list_head); |
|
init_usb_anchor(&pipe->urb_submitted); |
|
|
|
for (i = 0; i < urb_cnt; i++) { |
|
urb_context = kzalloc(sizeof(*urb_context), GFP_KERNEL); |
|
if (!urb_context) |
|
return -ENOMEM; |
|
|
|
urb_context->pipe = pipe; |
|
|
|
/* we are only allocate the urb contexts here, the actual URB |
|
* is allocated from the kernel as needed to do a transaction |
|
*/ |
|
pipe->urb_alloc++; |
|
ath10k_usb_free_urb_to_pipe(pipe, urb_context); |
|
} |
|
|
|
ath10k_dbg(ar, ATH10K_DBG_USB, |
|
"usb alloc resources lpipe %d hpipe 0x%x urbs %d\n", |
|
pipe->logical_pipe_num, pipe->usb_pipe_handle, |
|
pipe->urb_alloc); |
|
|
|
return 0; |
|
} |
|
|
|
static int ath10k_usb_setup_pipe_resources(struct ath10k *ar, |
|
struct usb_interface *interface) |
|
{ |
|
struct ath10k_usb *ar_usb = ath10k_usb_priv(ar); |
|
struct usb_host_interface *iface_desc = interface->cur_altsetting; |
|
struct usb_endpoint_descriptor *endpoint; |
|
struct ath10k_usb_pipe *pipe; |
|
int ret, i, urbcount; |
|
u8 pipe_num; |
|
|
|
ath10k_dbg(ar, ATH10K_DBG_USB, "usb setting up pipes using interface\n"); |
|
|
|
/* walk descriptors and setup pipes */ |
|
for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) { |
|
endpoint = &iface_desc->endpoint[i].desc; |
|
|
|
if (ATH10K_USB_IS_BULK_EP(endpoint->bmAttributes)) { |
|
ath10k_dbg(ar, ATH10K_DBG_USB, |
|
"usb %s bulk ep 0x%2.2x maxpktsz %d\n", |
|
ATH10K_USB_IS_DIR_IN |
|
(endpoint->bEndpointAddress) ? |
|
"rx" : "tx", endpoint->bEndpointAddress, |
|
le16_to_cpu(endpoint->wMaxPacketSize)); |
|
} else if (ATH10K_USB_IS_INT_EP(endpoint->bmAttributes)) { |
|
ath10k_dbg(ar, ATH10K_DBG_USB, |
|
"usb %s int ep 0x%2.2x maxpktsz %d interval %d\n", |
|
ATH10K_USB_IS_DIR_IN |
|
(endpoint->bEndpointAddress) ? |
|
"rx" : "tx", endpoint->bEndpointAddress, |
|
le16_to_cpu(endpoint->wMaxPacketSize), |
|
endpoint->bInterval); |
|
} else if (ATH10K_USB_IS_ISOC_EP(endpoint->bmAttributes)) { |
|
/* TODO for ISO */ |
|
ath10k_dbg(ar, ATH10K_DBG_USB, |
|
"usb %s isoc ep 0x%2.2x maxpktsz %d interval %d\n", |
|
ATH10K_USB_IS_DIR_IN |
|
(endpoint->bEndpointAddress) ? |
|
"rx" : "tx", endpoint->bEndpointAddress, |
|
le16_to_cpu(endpoint->wMaxPacketSize), |
|
endpoint->bInterval); |
|
} |
|
urbcount = 0; |
|
|
|
pipe_num = |
|
ath10k_usb_get_logical_pipe_num(endpoint->bEndpointAddress, |
|
&urbcount); |
|
if (pipe_num == ATH10K_USB_PIPE_INVALID) |
|
continue; |
|
|
|
pipe = &ar_usb->pipes[pipe_num]; |
|
if (pipe->ar_usb) |
|
/* hmmm..pipe was already setup */ |
|
continue; |
|
|
|
pipe->ar_usb = ar_usb; |
|
pipe->logical_pipe_num = pipe_num; |
|
pipe->ep_address = endpoint->bEndpointAddress; |
|
pipe->max_packet_size = le16_to_cpu(endpoint->wMaxPacketSize); |
|
|
|
if (ATH10K_USB_IS_BULK_EP(endpoint->bmAttributes)) { |
|
if (ATH10K_USB_IS_DIR_IN(pipe->ep_address)) { |
|
pipe->usb_pipe_handle = |
|
usb_rcvbulkpipe(ar_usb->udev, |
|
pipe->ep_address); |
|
} else { |
|
pipe->usb_pipe_handle = |
|
usb_sndbulkpipe(ar_usb->udev, |
|
pipe->ep_address); |
|
} |
|
} else if (ATH10K_USB_IS_INT_EP(endpoint->bmAttributes)) { |
|
if (ATH10K_USB_IS_DIR_IN(pipe->ep_address)) { |
|
pipe->usb_pipe_handle = |
|
usb_rcvintpipe(ar_usb->udev, |
|
pipe->ep_address); |
|
} else { |
|
pipe->usb_pipe_handle = |
|
usb_sndintpipe(ar_usb->udev, |
|
pipe->ep_address); |
|
} |
|
} else if (ATH10K_USB_IS_ISOC_EP(endpoint->bmAttributes)) { |
|
/* TODO for ISO */ |
|
if (ATH10K_USB_IS_DIR_IN(pipe->ep_address)) { |
|
pipe->usb_pipe_handle = |
|
usb_rcvisocpipe(ar_usb->udev, |
|
pipe->ep_address); |
|
} else { |
|
pipe->usb_pipe_handle = |
|
usb_sndisocpipe(ar_usb->udev, |
|
pipe->ep_address); |
|
} |
|
} |
|
|
|
pipe->ep_desc = endpoint; |
|
|
|
if (!ATH10K_USB_IS_DIR_IN(pipe->ep_address)) |
|
pipe->flags |= ATH10K_USB_PIPE_FLAG_TX; |
|
|
|
ret = ath10k_usb_alloc_pipe_resources(ar, pipe, urbcount); |
|
if (ret) |
|
return ret; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static int ath10k_usb_create(struct ath10k *ar, |
|
struct usb_interface *interface) |
|
{ |
|
struct ath10k_usb *ar_usb = ath10k_usb_priv(ar); |
|
struct usb_device *dev = interface_to_usbdev(interface); |
|
struct ath10k_usb_pipe *pipe; |
|
int ret, i; |
|
|
|
usb_set_intfdata(interface, ar_usb); |
|
spin_lock_init(&ar_usb->cs_lock); |
|
ar_usb->udev = dev; |
|
ar_usb->interface = interface; |
|
|
|
for (i = 0; i < ATH10K_USB_PIPE_MAX; i++) { |
|
pipe = &ar_usb->pipes[i]; |
|
INIT_WORK(&pipe->io_complete_work, |
|
ath10k_usb_io_comp_work); |
|
skb_queue_head_init(&pipe->io_comp_queue); |
|
} |
|
|
|
ar_usb->diag_cmd_buffer = kzalloc(ATH10K_USB_MAX_DIAG_CMD, GFP_KERNEL); |
|
if (!ar_usb->diag_cmd_buffer) { |
|
ret = -ENOMEM; |
|
goto err; |
|
} |
|
|
|
ar_usb->diag_resp_buffer = kzalloc(ATH10K_USB_MAX_DIAG_RESP, |
|
GFP_KERNEL); |
|
if (!ar_usb->diag_resp_buffer) { |
|
ret = -ENOMEM; |
|
goto err; |
|
} |
|
|
|
ret = ath10k_usb_setup_pipe_resources(ar, interface); |
|
if (ret) |
|
goto err; |
|
|
|
return 0; |
|
|
|
err: |
|
ath10k_usb_destroy(ar); |
|
return ret; |
|
} |
|
|
|
/* ath10k usb driver registered functions */ |
|
static int ath10k_usb_probe(struct usb_interface *interface, |
|
const struct usb_device_id *id) |
|
{ |
|
struct ath10k *ar; |
|
struct ath10k_usb *ar_usb; |
|
struct usb_device *dev = interface_to_usbdev(interface); |
|
int ret, vendor_id, product_id; |
|
enum ath10k_hw_rev hw_rev; |
|
struct ath10k_bus_params bus_params = {}; |
|
|
|
/* Assumption: All USB based chipsets (so far) are QCA9377 based. |
|
* If there will be newer chipsets that does not use the hw reg |
|
* setup as defined in qca6174_regs and qca6174_values, this |
|
* assumption is no longer valid and hw_rev must be setup differently |
|
* depending on chipset. |
|
*/ |
|
hw_rev = ATH10K_HW_QCA9377; |
|
|
|
ar = ath10k_core_create(sizeof(*ar_usb), &dev->dev, ATH10K_BUS_USB, |
|
hw_rev, &ath10k_usb_hif_ops); |
|
if (!ar) { |
|
dev_err(&dev->dev, "failed to allocate core\n"); |
|
return -ENOMEM; |
|
} |
|
|
|
usb_get_dev(dev); |
|
vendor_id = le16_to_cpu(dev->descriptor.idVendor); |
|
product_id = le16_to_cpu(dev->descriptor.idProduct); |
|
|
|
ath10k_dbg(ar, ATH10K_DBG_BOOT, |
|
"usb new func vendor 0x%04x product 0x%04x\n", |
|
vendor_id, product_id); |
|
|
|
ar_usb = ath10k_usb_priv(ar); |
|
ret = ath10k_usb_create(ar, interface); |
|
if (ret) |
|
goto err; |
|
ar_usb->ar = ar; |
|
|
|
ar->dev_id = product_id; |
|
ar->id.vendor = vendor_id; |
|
ar->id.device = product_id; |
|
|
|
bus_params.dev_type = ATH10K_DEV_TYPE_HL; |
|
/* TODO: don't know yet how to get chip_id with USB */ |
|
bus_params.chip_id = 0; |
|
ret = ath10k_core_register(ar, &bus_params); |
|
if (ret) { |
|
ath10k_warn(ar, "failed to register driver core: %d\n", ret); |
|
goto err_usb_destroy; |
|
} |
|
|
|
/* TODO: remove this once USB support is fully implemented */ |
|
ath10k_warn(ar, "Warning: ath10k USB support is incomplete, don't expect anything to work!\n"); |
|
|
|
return 0; |
|
|
|
err_usb_destroy: |
|
ath10k_usb_destroy(ar); |
|
|
|
err: |
|
ath10k_core_destroy(ar); |
|
|
|
usb_put_dev(dev); |
|
|
|
return ret; |
|
} |
|
|
|
static void ath10k_usb_remove(struct usb_interface *interface) |
|
{ |
|
struct ath10k_usb *ar_usb; |
|
|
|
ar_usb = usb_get_intfdata(interface); |
|
if (!ar_usb) |
|
return; |
|
|
|
ath10k_core_unregister(ar_usb->ar); |
|
ath10k_usb_destroy(ar_usb->ar); |
|
usb_put_dev(interface_to_usbdev(interface)); |
|
ath10k_core_destroy(ar_usb->ar); |
|
} |
|
|
|
#ifdef CONFIG_PM |
|
|
|
static int ath10k_usb_pm_suspend(struct usb_interface *interface, |
|
pm_message_t message) |
|
{ |
|
struct ath10k_usb *ar_usb = usb_get_intfdata(interface); |
|
|
|
ath10k_usb_flush_all(ar_usb->ar); |
|
return 0; |
|
} |
|
|
|
static int ath10k_usb_pm_resume(struct usb_interface *interface) |
|
{ |
|
struct ath10k_usb *ar_usb = usb_get_intfdata(interface); |
|
struct ath10k *ar = ar_usb->ar; |
|
|
|
ath10k_usb_post_recv_transfers(ar, |
|
&ar_usb->pipes[ATH10K_USB_PIPE_RX_DATA]); |
|
|
|
return 0; |
|
} |
|
|
|
#else |
|
|
|
#define ath10k_usb_pm_suspend NULL |
|
#define ath10k_usb_pm_resume NULL |
|
|
|
#endif |
|
|
|
/* table of devices that work with this driver */ |
|
static struct usb_device_id ath10k_usb_ids[] = { |
|
{USB_DEVICE(0x13b1, 0x0042)}, /* Linksys WUSB6100M */ |
|
{ /* Terminating entry */ }, |
|
}; |
|
|
|
MODULE_DEVICE_TABLE(usb, ath10k_usb_ids); |
|
|
|
static struct usb_driver ath10k_usb_driver = { |
|
.name = "ath10k_usb", |
|
.probe = ath10k_usb_probe, |
|
.suspend = ath10k_usb_pm_suspend, |
|
.resume = ath10k_usb_pm_resume, |
|
.disconnect = ath10k_usb_remove, |
|
.id_table = ath10k_usb_ids, |
|
.supports_autosuspend = true, |
|
.disable_hub_initiated_lpm = 1, |
|
}; |
|
|
|
module_usb_driver(ath10k_usb_driver); |
|
|
|
MODULE_AUTHOR("Atheros Communications, Inc."); |
|
MODULE_DESCRIPTION("Driver support for Qualcomm Atheros 802.11ac WLAN USB devices"); |
|
MODULE_LICENSE("Dual BSD/GPL");
|
|
|