| /* |
| * Copyright (C) 2018 Lorenzo Bianconi <lorenzo.bianconi83@gmail.com> |
| * |
| * Permission to use, copy, modify, and/or distribute this software for any |
| * purpose with or without fee is hereby granted, provided that the above |
| * copyright notice and this permission notice appear in all copies. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
| * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
| * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| */ |
| |
| #include <linux/firmware.h> |
| |
| #include "mt76.h" |
| #include "dma.h" |
| |
| #define MT_CMD_HDR_LEN 4 |
| |
| #define MT_FCE_DMA_ADDR 0x0230 |
| #define MT_FCE_DMA_LEN 0x0234 |
| |
| #define MT_TX_CPU_FROM_FCE_CPU_DESC_IDX 0x09a8 |
| |
| struct sk_buff *mt76u_mcu_msg_alloc(const void *data, int len) |
| { |
| struct sk_buff *skb; |
| |
| skb = alloc_skb(MT_CMD_HDR_LEN + len + 8, GFP_KERNEL); |
| if (!skb) |
| return NULL; |
| |
| skb_reserve(skb, MT_CMD_HDR_LEN); |
| skb_put_data(skb, data, len); |
| |
| return skb; |
| } |
| EXPORT_SYMBOL_GPL(mt76u_mcu_msg_alloc); |
| |
| void mt76u_mcu_complete_urb(struct urb *urb) |
| { |
| struct completion *cmpl = urb->context; |
| |
| complete(cmpl); |
| } |
| EXPORT_SYMBOL_GPL(mt76u_mcu_complete_urb); |
| |
| static int mt76u_mcu_wait_resp(struct mt76_dev *dev, u8 seq) |
| { |
| struct mt76_usb *usb = &dev->usb; |
| struct mt76u_buf *buf = &usb->mcu.res; |
| int i, ret; |
| u32 rxfce; |
| |
| for (i = 0; i < 5; i++) { |
| if (!wait_for_completion_timeout(&usb->mcu.cmpl, |
| msecs_to_jiffies(300))) |
| continue; |
| |
| if (buf->urb->status) |
| return -EIO; |
| |
| rxfce = get_unaligned_le32(sg_virt(&buf->urb->sg[0])); |
| ret = mt76u_submit_buf(dev, USB_DIR_IN, |
| MT_EP_IN_CMD_RESP, |
| buf, GFP_KERNEL, |
| mt76u_mcu_complete_urb, |
| &usb->mcu.cmpl); |
| if (ret) |
| return ret; |
| |
| if (seq == FIELD_GET(MT_RX_FCE_INFO_CMD_SEQ, rxfce)) |
| return 0; |
| |
| dev_err(dev->dev, "error: MCU resp evt:%lx seq:%hhx-%lx\n", |
| FIELD_GET(MT_RX_FCE_INFO_EVT_TYPE, rxfce), |
| seq, FIELD_GET(MT_RX_FCE_INFO_CMD_SEQ, rxfce)); |
| } |
| |
| dev_err(dev->dev, "error: %s timed out\n", __func__); |
| return -ETIMEDOUT; |
| } |
| |
| int mt76u_mcu_send_msg(struct mt76_dev *dev, struct sk_buff *skb, |
| int cmd, bool wait_resp) |
| { |
| struct usb_interface *intf = to_usb_interface(dev->dev); |
| struct usb_device *udev = interface_to_usbdev(intf); |
| struct mt76_usb *usb = &dev->usb; |
| unsigned int pipe; |
| int ret, sent; |
| u8 seq = 0; |
| u32 info; |
| |
| if (test_bit(MT76_REMOVED, &dev->state)) |
| return 0; |
| |
| mutex_lock(&usb->mcu.mutex); |
| |
| pipe = usb_sndbulkpipe(udev, usb->out_ep[MT_EP_OUT_INBAND_CMD]); |
| if (wait_resp) { |
| seq = ++usb->mcu.msg_seq & 0xf; |
| if (!seq) |
| seq = ++usb->mcu.msg_seq & 0xf; |
| } |
| |
| info = FIELD_PREP(MT_MCU_MSG_CMD_SEQ, seq) | |
| FIELD_PREP(MT_MCU_MSG_CMD_TYPE, cmd) | |
| MT_MCU_MSG_TYPE_CMD; |
| ret = mt76u_skb_dma_info(skb, CPU_TX_PORT, info); |
| if (ret) |
| goto out; |
| |
| ret = usb_bulk_msg(udev, pipe, skb->data, skb->len, &sent, 500); |
| if (ret) |
| goto out; |
| |
| if (wait_resp) |
| ret = mt76u_mcu_wait_resp(dev, seq); |
| |
| out: |
| mutex_unlock(&usb->mcu.mutex); |
| |
| consume_skb(skb); |
| |
| return ret; |
| } |
| EXPORT_SYMBOL_GPL(mt76u_mcu_send_msg); |
| |
| void mt76u_mcu_fw_reset(struct mt76_dev *dev) |
| { |
| mt76u_vendor_request(dev, MT_VEND_DEV_MODE, |
| USB_DIR_OUT | USB_TYPE_VENDOR, |
| 0x1, 0, NULL, 0); |
| } |
| EXPORT_SYMBOL_GPL(mt76u_mcu_fw_reset); |
| |
| static int |
| __mt76u_mcu_fw_send_data(struct mt76_dev *dev, struct mt76u_buf *buf, |
| const void *fw_data, int len, u32 dst_addr) |
| { |
| u8 *data = sg_virt(&buf->urb->sg[0]); |
| DECLARE_COMPLETION_ONSTACK(cmpl); |
| __le32 info; |
| u32 val; |
| int err; |
| |
| info = cpu_to_le32(FIELD_PREP(MT_MCU_MSG_PORT, CPU_TX_PORT) | |
| FIELD_PREP(MT_MCU_MSG_LEN, len) | |
| MT_MCU_MSG_TYPE_CMD); |
| |
| memcpy(data, &info, sizeof(info)); |
| memcpy(data + sizeof(info), fw_data, len); |
| memset(data + sizeof(info) + len, 0, 4); |
| |
| mt76u_single_wr(dev, MT_VEND_WRITE_FCE, |
| MT_FCE_DMA_ADDR, dst_addr); |
| len = roundup(len, 4); |
| mt76u_single_wr(dev, MT_VEND_WRITE_FCE, |
| MT_FCE_DMA_LEN, len << 16); |
| |
| buf->len = MT_CMD_HDR_LEN + len + sizeof(info); |
| err = mt76u_submit_buf(dev, USB_DIR_OUT, |
| MT_EP_OUT_INBAND_CMD, |
| buf, GFP_KERNEL, |
| mt76u_mcu_complete_urb, &cmpl); |
| if (err < 0) |
| return err; |
| |
| if (!wait_for_completion_timeout(&cmpl, |
| msecs_to_jiffies(1000))) { |
| dev_err(dev->dev, "firmware upload timed out\n"); |
| usb_kill_urb(buf->urb); |
| return -ETIMEDOUT; |
| } |
| |
| if (mt76u_urb_error(buf->urb)) { |
| dev_err(dev->dev, "firmware upload failed: %d\n", |
| buf->urb->status); |
| return buf->urb->status; |
| } |
| |
| val = mt76u_rr(dev, MT_TX_CPU_FROM_FCE_CPU_DESC_IDX); |
| val++; |
| mt76u_wr(dev, MT_TX_CPU_FROM_FCE_CPU_DESC_IDX, val); |
| |
| return 0; |
| } |
| |
| int mt76u_mcu_fw_send_data(struct mt76_dev *dev, const void *data, |
| int data_len, u32 max_payload, u32 offset) |
| { |
| int err, len, pos = 0, max_len = max_payload - 8; |
| struct mt76u_buf buf; |
| |
| err = mt76u_buf_alloc(dev, &buf, 1, max_payload, max_payload, |
| GFP_KERNEL); |
| if (err < 0) |
| return err; |
| |
| while (data_len > 0) { |
| len = min_t(int, data_len, max_len); |
| err = __mt76u_mcu_fw_send_data(dev, &buf, data + pos, |
| len, offset + pos); |
| if (err < 0) |
| break; |
| |
| data_len -= len; |
| pos += len; |
| usleep_range(5000, 10000); |
| } |
| mt76u_buf_free(&buf); |
| |
| return err; |
| } |
| EXPORT_SYMBOL_GPL(mt76u_mcu_fw_send_data); |
| |
| int mt76u_mcu_init_rx(struct mt76_dev *dev) |
| { |
| struct mt76_usb *usb = &dev->usb; |
| int err; |
| |
| err = mt76u_buf_alloc(dev, &usb->mcu.res, 1, |
| MCU_RESP_URB_SIZE, MCU_RESP_URB_SIZE, |
| GFP_KERNEL); |
| if (err < 0) |
| return err; |
| |
| err = mt76u_submit_buf(dev, USB_DIR_IN, MT_EP_IN_CMD_RESP, |
| &usb->mcu.res, GFP_KERNEL, |
| mt76u_mcu_complete_urb, |
| &usb->mcu.cmpl); |
| if (err < 0) |
| mt76u_buf_free(&usb->mcu.res); |
| |
| return err; |
| } |
| EXPORT_SYMBOL_GPL(mt76u_mcu_init_rx); |