382 lines
9.6 KiB
C
382 lines
9.6 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (C) 2015 Jakub Kicinski <kubakici@wp.pl>
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/usb.h>
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#include "mt7601u.h"
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#include "usb.h"
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#include "trace.h"
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static const struct usb_device_id mt7601u_device_table[] = {
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{ USB_DEVICE(0x0b05, 0x17d3) },
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{ USB_DEVICE(0x0e8d, 0x760a) },
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{ USB_DEVICE(0x0e8d, 0x760b) },
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{ USB_DEVICE(0x13d3, 0x3431) },
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{ USB_DEVICE(0x13d3, 0x3434) },
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{ USB_DEVICE(0x148f, 0x7601) },
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{ USB_DEVICE(0x148f, 0x760a) },
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{ USB_DEVICE(0x148f, 0x760b) },
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{ USB_DEVICE(0x148f, 0x760c) },
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{ USB_DEVICE(0x148f, 0x760d) },
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{ USB_DEVICE(0x2001, 0x3d04) },
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{ USB_DEVICE(0x2717, 0x4106) },
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{ USB_DEVICE(0x2955, 0x0001) },
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{ USB_DEVICE(0x2955, 0x1001) },
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{ USB_DEVICE(0x2955, 0x1003) },
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{ USB_DEVICE(0x2a5f, 0x1000) },
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{ USB_DEVICE(0x7392, 0x7710) },
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{ 0, }
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};
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bool mt7601u_usb_alloc_buf(struct mt7601u_dev *dev, size_t len,
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struct mt7601u_dma_buf *buf)
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{
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struct usb_device *usb_dev = mt7601u_to_usb_dev(dev);
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buf->len = len;
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buf->urb = usb_alloc_urb(0, GFP_KERNEL);
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buf->buf = usb_alloc_coherent(usb_dev, buf->len, GFP_KERNEL, &buf->dma);
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return !buf->urb || !buf->buf;
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}
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void mt7601u_usb_free_buf(struct mt7601u_dev *dev, struct mt7601u_dma_buf *buf)
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{
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struct usb_device *usb_dev = mt7601u_to_usb_dev(dev);
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usb_free_coherent(usb_dev, buf->len, buf->buf, buf->dma);
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usb_free_urb(buf->urb);
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}
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int mt7601u_usb_submit_buf(struct mt7601u_dev *dev, int dir, int ep_idx,
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struct mt7601u_dma_buf *buf, gfp_t gfp,
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usb_complete_t complete_fn, void *context)
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{
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struct usb_device *usb_dev = mt7601u_to_usb_dev(dev);
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unsigned pipe;
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int ret;
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if (dir == USB_DIR_IN)
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pipe = usb_rcvbulkpipe(usb_dev, dev->in_eps[ep_idx]);
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else
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pipe = usb_sndbulkpipe(usb_dev, dev->out_eps[ep_idx]);
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usb_fill_bulk_urb(buf->urb, usb_dev, pipe, buf->buf, buf->len,
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complete_fn, context);
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buf->urb->transfer_dma = buf->dma;
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buf->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
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trace_mt_submit_urb(dev, buf->urb);
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ret = usb_submit_urb(buf->urb, gfp);
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if (ret)
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dev_err(dev->dev, "Error: submit URB dir:%d ep:%d failed:%d\n",
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dir, ep_idx, ret);
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return ret;
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}
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void mt7601u_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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int mt7601u_vendor_request(struct mt7601u_dev *dev, const u8 req,
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const u8 direction, const u16 val, const u16 offset,
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void *buf, const size_t buflen)
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{
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int i, ret;
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struct usb_device *usb_dev = mt7601u_to_usb_dev(dev);
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const u8 req_type = direction | USB_TYPE_VENDOR | USB_RECIP_DEVICE;
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const unsigned int pipe = (direction == USB_DIR_IN) ?
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usb_rcvctrlpipe(usb_dev, 0) : usb_sndctrlpipe(usb_dev, 0);
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for (i = 0; i < MT_VEND_REQ_MAX_RETRY; i++) {
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ret = usb_control_msg(usb_dev, pipe, req, req_type,
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val, offset, buf, buflen,
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MT_VEND_REQ_TOUT_MS);
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trace_mt_vend_req(dev, pipe, req, req_type, val, offset,
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buf, buflen, ret);
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if (ret == -ENODEV)
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set_bit(MT7601U_STATE_REMOVED, &dev->state);
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if (ret >= 0 || ret == -ENODEV)
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return ret;
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msleep(5);
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}
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dev_err(dev->dev, "Vendor request req:%02x off:%04x failed:%d\n",
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req, offset, ret);
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return ret;
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}
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void mt7601u_vendor_reset(struct mt7601u_dev *dev)
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{
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mt7601u_vendor_request(dev, MT_VEND_DEV_MODE, USB_DIR_OUT,
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MT_VEND_DEV_MODE_RESET, 0, NULL, 0);
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}
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/* should be called with vendor_req_mutex held */
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static u32 __mt7601u_rr(struct mt7601u_dev *dev, u32 offset)
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{
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int ret;
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u32 val = ~0;
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WARN_ONCE(offset > USHRT_MAX, "read high off:%08x", offset);
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ret = mt7601u_vendor_request(dev, MT_VEND_MULTI_READ, USB_DIR_IN,
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0, offset, dev->vend_buf, MT_VEND_BUF);
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if (ret == MT_VEND_BUF)
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val = get_unaligned_le32(dev->vend_buf);
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else if (ret > 0)
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dev_err(dev->dev, "Error: wrong size read:%d off:%08x\n",
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ret, offset);
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trace_reg_read(dev, offset, val);
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return val;
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}
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u32 mt7601u_rr(struct mt7601u_dev *dev, u32 offset)
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{
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u32 ret;
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mutex_lock(&dev->vendor_req_mutex);
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ret = __mt7601u_rr(dev, offset);
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mutex_unlock(&dev->vendor_req_mutex);
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return ret;
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}
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/* should be called with vendor_req_mutex held */
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static int __mt7601u_vendor_single_wr(struct mt7601u_dev *dev, const u8 req,
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const u16 offset, const u32 val)
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{
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int ret = mt7601u_vendor_request(dev, req, USB_DIR_OUT,
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val & 0xffff, offset, NULL, 0);
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if (!ret)
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ret = mt7601u_vendor_request(dev, req, USB_DIR_OUT,
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val >> 16, offset + 2, NULL, 0);
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trace_reg_write(dev, offset, val);
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return ret;
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}
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int mt7601u_vendor_single_wr(struct mt7601u_dev *dev, const u8 req,
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const u16 offset, const u32 val)
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{
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int ret;
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mutex_lock(&dev->vendor_req_mutex);
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ret = __mt7601u_vendor_single_wr(dev, req, offset, val);
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mutex_unlock(&dev->vendor_req_mutex);
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return ret;
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}
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void mt7601u_wr(struct mt7601u_dev *dev, u32 offset, u32 val)
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{
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WARN_ONCE(offset > USHRT_MAX, "write high off:%08x", offset);
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mt7601u_vendor_single_wr(dev, MT_VEND_WRITE, offset, val);
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}
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u32 mt7601u_rmw(struct mt7601u_dev *dev, u32 offset, u32 mask, u32 val)
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{
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mutex_lock(&dev->vendor_req_mutex);
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val |= __mt7601u_rr(dev, offset) & ~mask;
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__mt7601u_vendor_single_wr(dev, MT_VEND_WRITE, offset, val);
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mutex_unlock(&dev->vendor_req_mutex);
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return val;
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}
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u32 mt7601u_rmc(struct mt7601u_dev *dev, u32 offset, u32 mask, u32 val)
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{
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u32 reg;
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mutex_lock(&dev->vendor_req_mutex);
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reg = __mt7601u_rr(dev, offset);
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val |= reg & ~mask;
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if (reg != val)
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__mt7601u_vendor_single_wr(dev, MT_VEND_WRITE,
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offset, val);
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mutex_unlock(&dev->vendor_req_mutex);
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return val;
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}
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void mt7601u_wr_copy(struct mt7601u_dev *dev, u32 offset,
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const void *data, int len)
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{
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WARN_ONCE(offset & 3, "unaligned write copy off:%08x", offset);
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WARN_ONCE(len & 3, "short write copy off:%08x", offset);
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mt7601u_burst_write_regs(dev, offset, data, len / 4);
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}
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void mt7601u_addr_wr(struct mt7601u_dev *dev, const u32 offset, const u8 *addr)
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{
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mt7601u_wr(dev, offset, get_unaligned_le32(addr));
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mt7601u_wr(dev, offset + 4, addr[4] | addr[5] << 8);
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}
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static int mt7601u_assign_pipes(struct usb_interface *usb_intf,
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struct mt7601u_dev *dev)
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{
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struct usb_endpoint_descriptor *ep_desc;
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struct usb_host_interface *intf_desc = usb_intf->cur_altsetting;
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unsigned i, ep_i = 0, ep_o = 0;
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BUILD_BUG_ON(sizeof(dev->in_eps) < __MT_EP_IN_MAX);
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BUILD_BUG_ON(sizeof(dev->out_eps) < __MT_EP_OUT_MAX);
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for (i = 0; i < intf_desc->desc.bNumEndpoints; i++) {
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ep_desc = &intf_desc->endpoint[i].desc;
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if (usb_endpoint_is_bulk_in(ep_desc) &&
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ep_i++ < __MT_EP_IN_MAX) {
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dev->in_eps[ep_i - 1] = usb_endpoint_num(ep_desc);
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dev->in_max_packet = usb_endpoint_maxp(ep_desc);
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/* Note: this is ignored by usb sub-system but vendor
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* code does it. We can drop this at some point.
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*/
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dev->in_eps[ep_i - 1] |= USB_DIR_IN;
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} else if (usb_endpoint_is_bulk_out(ep_desc) &&
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ep_o++ < __MT_EP_OUT_MAX) {
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dev->out_eps[ep_o - 1] = usb_endpoint_num(ep_desc);
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dev->out_max_packet = usb_endpoint_maxp(ep_desc);
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}
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}
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if (ep_i != __MT_EP_IN_MAX || ep_o != __MT_EP_OUT_MAX) {
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dev_err(dev->dev, "Error: wrong pipe number in:%d out:%d\n",
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ep_i, ep_o);
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return -EINVAL;
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}
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return 0;
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}
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static int mt7601u_probe(struct usb_interface *usb_intf,
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const struct usb_device_id *id)
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{
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struct usb_device *usb_dev = interface_to_usbdev(usb_intf);
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struct mt7601u_dev *dev;
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u32 asic_rev, mac_rev;
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int ret;
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dev = mt7601u_alloc_device(&usb_intf->dev);
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if (!dev)
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return -ENOMEM;
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usb_dev = usb_get_dev(usb_dev);
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usb_reset_device(usb_dev);
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usb_set_intfdata(usb_intf, dev);
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dev->vend_buf = devm_kmalloc(dev->dev, MT_VEND_BUF, GFP_KERNEL);
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if (!dev->vend_buf) {
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ret = -ENOMEM;
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goto err;
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}
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ret = mt7601u_assign_pipes(usb_intf, dev);
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if (ret)
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goto err;
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ret = mt7601u_wait_asic_ready(dev);
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if (ret)
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goto err;
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asic_rev = mt7601u_rr(dev, MT_ASIC_VERSION);
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mac_rev = mt7601u_rr(dev, MT_MAC_CSR0);
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dev_info(dev->dev, "ASIC revision: %08x MAC revision: %08x\n",
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asic_rev, mac_rev);
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if ((asic_rev >> 16) != 0x7601) {
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ret = -ENODEV;
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goto err;
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}
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/* Note: vendor driver skips this check for MT7601U */
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if (!(mt7601u_rr(dev, MT_EFUSE_CTRL) & MT_EFUSE_CTRL_SEL))
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dev_warn(dev->dev, "Warning: eFUSE not present\n");
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ret = mt7601u_init_hardware(dev);
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if (ret)
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goto err;
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ret = mt7601u_register_device(dev);
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if (ret)
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goto err_hw;
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set_bit(MT7601U_STATE_INITIALIZED, &dev->state);
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return 0;
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err_hw:
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mt7601u_cleanup(dev);
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err:
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usb_set_intfdata(usb_intf, NULL);
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usb_put_dev(interface_to_usbdev(usb_intf));
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destroy_workqueue(dev->stat_wq);
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ieee80211_free_hw(dev->hw);
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return ret;
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}
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static void mt7601u_disconnect(struct usb_interface *usb_intf)
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{
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struct mt7601u_dev *dev = usb_get_intfdata(usb_intf);
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ieee80211_unregister_hw(dev->hw);
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mt7601u_cleanup(dev);
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usb_set_intfdata(usb_intf, NULL);
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usb_put_dev(interface_to_usbdev(usb_intf));
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destroy_workqueue(dev->stat_wq);
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ieee80211_free_hw(dev->hw);
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}
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static int mt7601u_suspend(struct usb_interface *usb_intf, pm_message_t state)
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{
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struct mt7601u_dev *dev = usb_get_intfdata(usb_intf);
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mt7601u_cleanup(dev);
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return 0;
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}
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static int mt7601u_resume(struct usb_interface *usb_intf)
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{
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struct mt7601u_dev *dev = usb_get_intfdata(usb_intf);
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int ret;
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ret = mt7601u_init_hardware(dev);
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if (ret)
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return ret;
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set_bit(MT7601U_STATE_INITIALIZED, &dev->state);
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return 0;
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}
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MODULE_DEVICE_TABLE(usb, mt7601u_device_table);
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MODULE_FIRMWARE(MT7601U_FIRMWARE);
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MODULE_LICENSE("GPL");
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static struct usb_driver mt7601u_driver = {
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.name = KBUILD_MODNAME,
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.id_table = mt7601u_device_table,
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.probe = mt7601u_probe,
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.disconnect = mt7601u_disconnect,
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.suspend = mt7601u_suspend,
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.resume = mt7601u_resume,
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.reset_resume = mt7601u_resume,
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.soft_unbind = 1,
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.disable_hub_initiated_lpm = 1,
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};
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module_usb_driver(mt7601u_driver);
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