Add usb files of mt76x0 driver.
Signed-off-by: Stanislaw Gruszka <sgruszka@xxxxxxxxxx>
---
drivers/net/wireless/mediatek/mt76/mt76x0/usb.c | 377 ++++++++++++++++++++++++
drivers/net/wireless/mediatek/mt76/mt76x0/usb.h | 61 ++++
2 files changed, 438 insertions(+)
create mode 100644 drivers/net/wireless/mediatek/mt76/mt76x0/usb.c
create mode 100644 drivers/net/wireless/mediatek/mt76/mt76x0/usb.h
diff --git a/drivers/net/wireless/mediatek/mt76/mt76x0/usb.c b/drivers/net/wireless/mediatek/mt76/mt76x0/usb.c
new file mode 100644
index 000000000000..0871fdef59c3
--- /dev/null
+++ b/drivers/net/wireless/mediatek/mt76/mt76x0/usb.c
@@ -0,0 +1,377 @@
+/*
+ * Copyright (C) 2015 Jakub Kicinski <kubakici@xxxxx>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/usb.h>
+
+#include "mt76x0.h"
+#include "usb.h"
+#include "trace.h"
+
+static struct usb_device_id mt76x0_device_table[] = {
+ { USB_DEVICE(0x148F, 0x7610) }, /* MT7610U */
+ { USB_DEVICE(0x13B1, 0x003E) }, /* Linksys AE6000 */
+ { USB_DEVICE(0x0E8D, 0x7610) }, /* Sabrent NTWLAC */
+ { USB_DEVICE(0x7392, 0xa711) }, /* Edimax 7711mac */
+ { USB_DEVICE(0x7392, 0xb711) }, /* Edimax / Elecom */
+ { USB_DEVICE(0x148f, 0x761a) }, /* TP-Link TL-WDN5200 */
+ { USB_DEVICE(0x148f, 0x760a) }, /* TP-Link unknown */
+ { USB_DEVICE(0x0b05, 0x17d1) }, /* Asus USB-AC51 */
+ { USB_DEVICE(0x0b05, 0x17db) }, /* Asus USB-AC50 */
+ { USB_DEVICE(0x0df6, 0x0075) }, /* Sitecom WLA-3100 */
+ { USB_DEVICE(0x2019, 0xab31) }, /* Planex GW-450D */
+ { USB_DEVICE(0x2001, 0x3d02) }, /* D-LINK DWA-171 rev B1 */
+ { USB_DEVICE(0x0586, 0x3425) }, /* Zyxel NWD6505 */
+ { USB_DEVICE(0x07b8, 0x7610) }, /* AboCom AU7212 */
+ { USB_DEVICE(0x04bb, 0x0951) }, /* I-O DATA WN-AC433UK */
+ { USB_DEVICE(0x057c, 0x8502) }, /* AVM FRITZ!WLAN USB Stick AC 430 */
+ { USB_DEVICE(0x293c, 0x5702) }, /* Comcast Xfinity KXW02AAA */
+ { USB_DEVICE(0x20f4, 0x806b) }, /* TRENDnet TEW-806UBH */
+ { USB_DEVICE(0x7392, 0xc711) }, /* Devolo Wifi ac Stick */
+ { USB_DEVICE(0x0df6, 0x0079) }, /* Sitecom Europe B.V. ac Stick */
+ { USB_DEVICE(0x2357, 0x0105) }, /* TP-LINK Archer T1U */
+ { USB_DEVICE_AND_INTERFACE_INFO(0x0E8D, 0x7630, 0xff, 0x2, 0xff)}, /* MT7630U */
+ { USB_DEVICE_AND_INTERFACE_INFO(0x0E8D, 0x7650, 0xff, 0x2, 0xff)}, /* MT7650U */
+ { 0, }
+};
+
+bool mt76x0_usb_alloc_buf(struct mt76x0_dev *dev, size_t len,
+ struct mt76x0_dma_buf *buf)
+{
+ struct usb_device *usb_dev = mt76x0_to_usb_dev(dev);
+
+ buf->len = len;
+ buf->urb = usb_alloc_urb(0, GFP_KERNEL);
+ buf->buf = usb_alloc_coherent(usb_dev, buf->len, GFP_KERNEL, &buf->dma);
+
+ return !buf->urb || !buf->buf;
+}
+
+void mt76x0_usb_free_buf(struct mt76x0_dev *dev, struct mt76x0_dma_buf *buf)
+{
+ struct usb_device *usb_dev = mt76x0_to_usb_dev(dev);
+
+ usb_free_coherent(usb_dev, buf->len, buf->buf, buf->dma);
+ usb_free_urb(buf->urb);
+}
+
+int mt76x0_usb_submit_buf(struct mt76x0_dev *dev, int dir, int ep_idx,
+ struct mt76x0_dma_buf *buf, gfp_t gfp,
+ usb_complete_t complete_fn, void *context)
+{
+ struct usb_device *usb_dev = mt76x0_to_usb_dev(dev);
+ unsigned pipe;
+ int ret;
+
+ if (dir == USB_DIR_IN)
+ pipe = usb_rcvbulkpipe(usb_dev, dev->in_ep[ep_idx]);
+ else
+ pipe = usb_sndbulkpipe(usb_dev, dev->out_ep[ep_idx]);
+
+ usb_fill_bulk_urb(buf->urb, usb_dev, pipe, buf->buf, buf->len,
+ complete_fn, context);
+ buf->urb->transfer_dma = buf->dma;
+ buf->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
+
+ trace_mt_submit_urb(&dev->mt76, buf->urb);
+ ret = usb_submit_urb(buf->urb, gfp);
+ if (ret)
+ dev_err(dev->mt76.dev, "Error: submit URB dir:%d ep:%d failed:%d\n",
+ dir, ep_idx, ret);
+ return ret;
+}
+
+void mt76x0_complete_urb(struct urb *urb)
+{
+ struct completion *cmpl = urb->context;
+
+ complete(cmpl);
+}
+
+int mt76x0_vendor_request(struct mt76x0_dev *dev, const u8 req,
+ const u8 direction, const u16 val, const u16 offset,
+ void *buf, const size_t buflen)
+{
+ int i, ret;
+ struct usb_device *usb_dev = mt76x0_to_usb_dev(dev);
+ const u8 req_type = direction | USB_TYPE_VENDOR | USB_RECIP_DEVICE;
+ const unsigned int pipe = (direction == USB_DIR_IN) ?
+ usb_rcvctrlpipe(usb_dev, 0) : usb_sndctrlpipe(usb_dev, 0);
+
+ for (i = 0; i < MT_VEND_REQ_MAX_RETRY; i++) {
+ ret = usb_control_msg(usb_dev, pipe, req, req_type,
+ val, offset, buf, buflen,
+ MT_VEND_REQ_TOUT_MS);
+ trace_mt_vend_req(&dev->mt76, pipe, req, req_type, val, offset,
+ buf, buflen, ret);
+
+ if (ret == -ENODEV)
+ set_bit(MT76_REMOVED, &dev->mt76.state);
+ if (ret >= 0 || ret == -ENODEV)
+ return ret;
+
+ msleep(5);
+ }
+
+ dev_err(dev->mt76.dev, "Vendor request req:%02x off:%04x failed:%d\n",
+ req, offset, ret);
+
+ return ret;
+}
+
+void mt76x0_vendor_reset(struct mt76x0_dev *dev)
+{
+ mt76x0_vendor_request(dev, MT_VEND_DEV_MODE, USB_DIR_OUT,
+ MT_VEND_DEV_MODE_RESET, 0, NULL, 0);
+}
+
+static u32 mt76x0_rr(struct mt76_dev *dev, u32 offset)
+{
+ struct mt76x0_dev *mdev = (struct mt76x0_dev *) dev;
+ int ret;
+ u32 val = ~0;
+
+ WARN_ONCE(offset > USHRT_MAX, "read high off:%08x", offset);
+
+ mutex_lock(&mdev->usb_ctrl_mtx);
+
+ ret = mt76x0_vendor_request((struct mt76x0_dev *)dev, MT_VEND_MULTI_READ, USB_DIR_IN,
+ 0, offset, mdev->data, MT_VEND_BUF);
+ if (ret == MT_VEND_BUF)
+ val = get_unaligned_le32(mdev->data);
+ else if (ret > 0)
+ dev_err(dev->dev, "Error: wrong size read:%d off:%08x\n",
+ ret, offset);
+
+ mutex_unlock(&mdev->usb_ctrl_mtx);
+
+ trace_reg_read(dev, offset, val);
+ return val;
+}
+
+int mt76x0_vendor_single_wr(struct mt76x0_dev *dev, const u8 req,
+ const u16 offset, const u32 val)
+{
+ struct mt76x0_dev *mdev = dev;
+ int ret;
+
+ mutex_lock(&mdev->usb_ctrl_mtx);
+
+ ret = mt76x0_vendor_request(dev, req, USB_DIR_OUT,
+ val & 0xffff, offset, NULL, 0);
+ if (!ret)
+ ret = mt76x0_vendor_request(dev, req, USB_DIR_OUT,
+ val >> 16, offset + 2, NULL, 0);
+
+ mutex_unlock(&mdev->usb_ctrl_mtx);
+
+ return ret;
+}
+
+static void mt76x0_wr(struct mt76_dev *dev, u32 offset, u32 val)
+{
+ struct mt76x0_dev *mdev = (struct mt76x0_dev *) dev;
+ int ret;
+
+ WARN_ONCE(offset > USHRT_MAX, "write high off:%08x", offset);
+
+ mutex_lock(&mdev->usb_ctrl_mtx);
+
+ put_unaligned_le32(val, mdev->data);
+ ret = mt76x0_vendor_request(mdev, MT_VEND_MULTI_WRITE, USB_DIR_OUT,
+ 0, offset, mdev->data, MT_VEND_BUF);
+ trace_reg_write(dev, offset, val);
+
+ mutex_unlock(&mdev->usb_ctrl_mtx);
+}
+
+static u32 mt76x0_rmw(struct mt76_dev *dev, u32 offset, u32 mask, u32 val)
+{
+ val |= mt76x0_rr(dev, offset) & ~mask;
+ mt76x0_wr(dev, offset, val);
+ return val;
+}
+
+static void mt76x0_wr_copy(struct mt76_dev *dev, u32 offset,
+ const void *data, int len)
+{
+ WARN_ONCE(offset & 3, "unaligned write copy off:%08x", offset);
+ WARN_ONCE(len & 3, "short write copy off:%08x", offset);
+
+ mt76x0_burst_write_regs((struct mt76x0_dev *) dev, offset, data, len / 4);
+}
+
+void mt76x0_addr_wr(struct mt76x0_dev *dev, const u32 offset, const u8 *addr)
+{
+ mt76_wr(dev, offset, get_unaligned_le32(addr));
+ mt76_wr(dev, offset + 4, addr[4] | addr[5] << 8);
+}
+
+static int mt76x0_assign_pipes(struct usb_interface *usb_intf,
+ struct mt76x0_dev *dev)
+{
+ struct usb_endpoint_descriptor *ep_desc;
+ struct usb_host_interface *intf_desc = usb_intf->cur_altsetting;
+ unsigned i, ep_i = 0, ep_o = 0;
+
+ BUILD_BUG_ON(sizeof(dev->in_ep) < __MT_EP_IN_MAX);
+ BUILD_BUG_ON(sizeof(dev->out_ep) < __MT_EP_OUT_MAX);
+
+ for (i = 0; i < intf_desc->desc.bNumEndpoints; i++) {
+ ep_desc = &intf_desc->endpoint[i].desc;
+
+ if (usb_endpoint_is_bulk_in(ep_desc) &&
+ ep_i++ < __MT_EP_IN_MAX) {
+ dev->in_ep[ep_i - 1] = usb_endpoint_num(ep_desc);
+ dev->in_max_packet = usb_endpoint_maxp(ep_desc);
+ /* Note: this is ignored by usb sub-system but vendor
+ * code does it. We can drop this at some point.
+ */
+ dev->in_ep[ep_i - 1] |= USB_DIR_IN;
+ } else if (usb_endpoint_is_bulk_out(ep_desc) &&
+ ep_o++ < __MT_EP_OUT_MAX) {
+ dev->out_ep[ep_o - 1] = usb_endpoint_num(ep_desc);
+ dev->out_max_packet = usb_endpoint_maxp(ep_desc);
+ }
+ }
+
+ if (ep_i != __MT_EP_IN_MAX || ep_o != __MT_EP_OUT_MAX) {
+ dev_err(dev->mt76.dev, "Error: wrong pipe number in:%d out:%d\n",
+ ep_i, ep_o);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int mt76x0_probe(struct usb_interface *usb_intf,
+ const struct usb_device_id *id)
+{
+ struct usb_device *usb_dev = interface_to_usbdev(usb_intf);
+ struct mt76x0_dev *dev;
+ u32 asic_rev, mac_rev;
+ int ret;
+ static const struct mt76_bus_ops usb_ops = {
+ .rr = mt76x0_rr,
+ .wr = mt76x0_wr,
+ .rmw = mt76x0_rmw,
+ .copy = mt76x0_wr_copy,
+ };
+
+ dev = mt76x0_alloc_device(&usb_intf->dev);
+ if (!dev)
+ return -ENOMEM;
+
+ usb_dev = usb_get_dev(usb_dev);
+ usb_reset_device(usb_dev);
+
+ usb_set_intfdata(usb_intf, dev);
+
+ dev->mt76.bus = &usb_ops;
+
+ ret = mt76x0_assign_pipes(usb_intf, dev);
+ if (ret)
+ goto err;
+ ret = mt76x0_wait_asic_ready(dev);
+ if (ret)
+ goto err;
+
+ asic_rev = mt76_rr(dev, MT_ASIC_VERSION);
+ mac_rev = mt76_rr(dev, MT_MAC_CSR0);
+ dev_info(dev->mt76.dev, "ASIC revision: %08x MAC revision: %08x\n",
+ asic_rev, mac_rev);
+
+ /* Note: vendor driver skips this check for MT76X0U */
+ if (!(mt76_rr(dev, MT_EFUSE_CTRL) & MT_EFUSE_CTRL_SEL))
+ dev_warn(dev->mt76.dev, "Warning: eFUSE not present\n");
+
+ ret = mt76x0_init_hardware(dev);
+ if (ret)
+ goto err;
+
+ ret = mt76x0_register_device(dev);
+ if (ret)
+ goto err_hw;
+
+ set_bit(MT76_STATE_INITIALIZED, &dev->mt76.state);
+
+ return 0;
+err_hw:
+ mt76x0_cleanup(dev);
+err:
+ usb_set_intfdata(usb_intf, NULL);
+ usb_put_dev(interface_to_usbdev(usb_intf));
+
+ destroy_workqueue(dev->stat_wq);
+ ieee80211_free_hw(dev->mt76.hw);
+ return ret;
+}
+
+static void mt76x0_disconnect(struct usb_interface *usb_intf)
+{
+ struct mt76x0_dev *dev = usb_get_intfdata(usb_intf);
+ bool initalized = test_bit(MT76_STATE_INITIALIZED, &dev->mt76.state);
+
+ if (!initalized)
+ return;
+
+ ieee80211_unregister_hw(dev->mt76.hw);
+ mt76x0_cleanup(dev);
+
+ usb_set_intfdata(usb_intf, NULL);
+ usb_put_dev(interface_to_usbdev(usb_intf));
+
+ destroy_workqueue(dev->stat_wq);
+ ieee80211_free_hw(dev->mt76.hw);
+}
+
+static int mt76x0_suspend(struct usb_interface *usb_intf, pm_message_t state)
+{
+ struct mt76x0_dev *dev = usb_get_intfdata(usb_intf);
+
+ mt76x0_cleanup(dev);
+
+ return 0;
+}
+
+static int mt76x0_resume(struct usb_interface *usb_intf)
+{
+ struct mt76x0_dev *dev = usb_get_intfdata(usb_intf);
+ int ret;
+
+ ret = mt76x0_init_hardware(dev);
+ if (ret)
+ return ret;
+
+ set_bit(MT76_STATE_INITIALIZED, &dev->mt76.state);
+
+ return 0;
+}
+
+MODULE_DEVICE_TABLE(usb, mt76x0_device_table);
+MODULE_FIRMWARE(MT7610_FIRMWARE);
+MODULE_LICENSE("GPL");
+
+static struct usb_driver mt76x0_driver = {
+ .name = KBUILD_MODNAME,
+ .id_table = mt76x0_device_table,
+ .probe = mt76x0_probe,
+ .disconnect = mt76x0_disconnect,
+ .suspend = mt76x0_suspend,
+ .resume = mt76x0_resume,
+ .reset_resume = mt76x0_resume,
+ .soft_unbind = 1,
+ .disable_hub_initiated_lpm = 1,
+};
+module_usb_driver(mt76x0_driver);
diff --git a/drivers/net/wireless/mediatek/mt76/mt76x0/usb.h b/drivers/net/wireless/mediatek/mt76/mt76x0/usb.h
new file mode 100644
index 000000000000..9e42dfa665de
--- /dev/null
+++ b/drivers/net/wireless/mediatek/mt76/mt76x0/usb.h
@@ -0,0 +1,61 @@
+/*
+ * Copyright (C) 2015 Jakub Kicinski <kubakici@xxxxx>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef __MT76X0U_USB_H
+#define __MT76X0U_USB_H
+
+#include "mt76x0.h"
+
+#define MT7610_FIRMWARE "mt7610.bin"
+
+#define MT_VEND_REQ_MAX_RETRY 10
+#define MT_VEND_REQ_TOUT_MS 300
+
+#define MT_VEND_DEV_MODE_RESET 1
+
+#define MT_VEND_BUF sizeof(__le32)
+
+static inline struct usb_device *mt76x0_to_usb_dev(struct mt76x0_dev *mt76x0)
+{
+ return interface_to_usbdev(to_usb_interface(mt76x0->mt76.dev));
+}
+
+static inline struct usb_device *mt76_to_usb_dev(struct mt76_dev *mt76)
+{
+ return interface_to_usbdev(to_usb_interface(mt76->dev));
+}
+
+static inline bool mt76x0_urb_has_error(struct urb *urb)
+{
+ return urb->status &&
+ urb->status != -ENOENT &&
+ urb->status != -ECONNRESET &&
+ urb->status != -ESHUTDOWN;
+}
+
+bool mt76x0_usb_alloc_buf(struct mt76x0_dev *dev, size_t len,
+ struct mt76x0_dma_buf *buf);
+void mt76x0_usb_free_buf(struct mt76x0_dev *dev, struct mt76x0_dma_buf *buf);
+int mt76x0_usb_submit_buf(struct mt76x0_dev *dev, int dir, int ep_idx,
+ struct mt76x0_dma_buf *buf, gfp_t gfp,
+ usb_complete_t complete_fn, void *context);
+void mt76x0_complete_urb(struct urb *urb);
+
+int mt76x0_vendor_request(struct mt76x0_dev *dev, const u8 req,
+ const u8 direction, const u16 val, const u16 offset,
+ void *buf, const size_t buflen);
+void mt76x0_vendor_reset(struct mt76x0_dev *dev);
+int mt76x0_vendor_single_wr(struct mt76x0_dev *dev, const u8 req,
+ const u16 offset, const u32 val);
+
+#endif
--
1.9.3
