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d704d16f20
Do not use scatter-gather buffers for mcu commands. Introduce mt76u_buf_alloc and mt76u_buf_alloc_sg routines. Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Felix Fietkau <nbd@nbd.name>
58 lines
1.6 KiB
C
58 lines
1.6 KiB
C
/*
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* Copyright (C) 2018 Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include "mt76.h"
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void mt76u_mcu_complete_urb(struct urb *urb)
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{
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struct completion *cmpl = urb->context;
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complete(cmpl);
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}
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EXPORT_SYMBOL_GPL(mt76u_mcu_complete_urb);
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int mt76u_mcu_init_rx(struct mt76_dev *dev)
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{
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struct mt76_usb *usb = &dev->usb;
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int err;
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err = mt76u_buf_alloc(dev, &usb->mcu.res, MCU_RESP_URB_SIZE,
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MCU_RESP_URB_SIZE, GFP_KERNEL);
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if (err < 0)
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return err;
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err = mt76u_submit_buf(dev, USB_DIR_IN, MT_EP_IN_CMD_RESP,
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&usb->mcu.res, GFP_KERNEL,
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mt76u_mcu_complete_urb,
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&usb->mcu.cmpl);
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if (err < 0)
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mt76u_buf_free(&usb->mcu.res);
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return err;
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}
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EXPORT_SYMBOL_GPL(mt76u_mcu_init_rx);
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void mt76u_mcu_deinit(struct mt76_dev *dev)
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{
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struct mt76u_buf *buf = &dev->usb.mcu.res;
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if (buf->urb) {
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usb_kill_urb(buf->urb);
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mt76u_buf_free(buf);
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}
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}
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EXPORT_SYMBOL_GPL(mt76u_mcu_deinit);
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