mirror of https://gitee.com/openkylin/linux.git
535 lines
13 KiB
C
535 lines
13 KiB
C
/*
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* (c) Copyright 2002-2010, Ralink Technology, Inc.
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* Copyright (C) 2014 Felix Fietkau <nbd@openwrt.org>
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* Copyright (C) 2015 Jakub Kicinski <kubakici@wp.pl>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2
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* as published by the Free Software Foundation
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/kernel.h>
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#include <linux/firmware.h>
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#include <linux/delay.h>
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#include <linux/usb.h>
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#include <linux/skbuff.h>
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#include "mt7601u.h"
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#include "dma.h"
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#include "mcu.h"
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#include "usb.h"
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#include "trace.h"
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#define MCU_FW_URB_MAX_PAYLOAD 0x3800
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#define MCU_FW_URB_SIZE (MCU_FW_URB_MAX_PAYLOAD + 12)
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#define MCU_RESP_URB_SIZE 1024
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static inline int firmware_running(struct mt7601u_dev *dev)
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{
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return mt7601u_rr(dev, MT_MCU_COM_REG0) == 1;
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}
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static inline void skb_put_le32(struct sk_buff *skb, u32 val)
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{
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put_unaligned_le32(val, skb_put(skb, 4));
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}
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static inline void mt7601u_dma_skb_wrap_cmd(struct sk_buff *skb,
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u8 seq, enum mcu_cmd cmd)
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{
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WARN_ON(mt7601u_dma_skb_wrap(skb, CPU_TX_PORT, DMA_COMMAND,
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MT76_SET(MT_TXD_CMD_INFO_SEQ, seq) |
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MT76_SET(MT_TXD_CMD_INFO_TYPE, cmd)));
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}
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static inline void trace_mt_mcu_msg_send_cs(struct mt7601u_dev *dev,
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struct sk_buff *skb, bool need_resp)
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{
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u32 i, csum = 0;
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for (i = 0; i < skb->len / 4; i++)
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csum ^= get_unaligned_le32(skb->data + i * 4);
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trace_mt_mcu_msg_send(dev, skb, csum, need_resp);
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}
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static struct sk_buff *
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mt7601u_mcu_msg_alloc(struct mt7601u_dev *dev, const void *data, int len)
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{
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struct sk_buff *skb;
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WARN_ON(len % 4); /* if length is not divisible by 4 we need to pad */
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skb = alloc_skb(len + MT_DMA_HDR_LEN + 4, GFP_KERNEL);
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skb_reserve(skb, MT_DMA_HDR_LEN);
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memcpy(skb_put(skb, len), data, len);
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return skb;
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}
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static int mt7601u_mcu_wait_resp(struct mt7601u_dev *dev, u8 seq)
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{
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struct urb *urb = dev->mcu.resp.urb;
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u32 rxfce;
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int urb_status, ret, i = 5;
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while (i--) {
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if (!wait_for_completion_timeout(&dev->mcu.resp_cmpl,
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msecs_to_jiffies(300))) {
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dev_warn(dev->dev, "Warning: %s retrying\n", __func__);
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continue;
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}
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/* Make copies of important data before reusing the urb */
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rxfce = get_unaligned_le32(dev->mcu.resp.buf);
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urb_status = urb->status * mt7601u_urb_has_error(urb);
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ret = mt7601u_usb_submit_buf(dev, USB_DIR_IN, MT_EP_IN_CMD_RESP,
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&dev->mcu.resp, GFP_KERNEL,
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mt7601u_complete_urb,
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&dev->mcu.resp_cmpl);
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if (ret)
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return ret;
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if (urb_status)
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dev_err(dev->dev, "Error: MCU resp urb failed:%d\n",
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urb_status);
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if (MT76_GET(MT_RXD_CMD_INFO_CMD_SEQ, rxfce) == seq &&
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MT76_GET(MT_RXD_CMD_INFO_EVT_TYPE, rxfce) == CMD_DONE)
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return 0;
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dev_err(dev->dev, "Error: MCU resp evt:%hhx seq:%hhx-%hhx!\n",
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MT76_GET(MT_RXD_CMD_INFO_EVT_TYPE, rxfce),
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seq, MT76_GET(MT_RXD_CMD_INFO_CMD_SEQ, rxfce));
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}
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dev_err(dev->dev, "Error: %s timed out\n", __func__);
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return -ETIMEDOUT;
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}
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static int
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mt7601u_mcu_msg_send(struct mt7601u_dev *dev, struct sk_buff *skb,
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enum mcu_cmd cmd, bool wait_resp)
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{
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struct usb_device *usb_dev = mt7601u_to_usb_dev(dev);
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unsigned cmd_pipe = usb_sndbulkpipe(usb_dev,
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dev->out_eps[MT_EP_OUT_INBAND_CMD]);
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int sent, ret;
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u8 seq = 0;
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if (test_bit(MT7601U_STATE_REMOVED, &dev->state))
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return 0;
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mutex_lock(&dev->mcu.mutex);
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if (wait_resp)
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while (!seq)
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seq = ++dev->mcu.msg_seq & 0xf;
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mt7601u_dma_skb_wrap_cmd(skb, seq, cmd);
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if (dev->mcu.resp_cmpl.done)
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dev_err(dev->dev, "Error: MCU response pre-completed!\n");
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trace_mt_mcu_msg_send_cs(dev, skb, wait_resp);
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trace_mt_submit_urb_sync(dev, cmd_pipe, skb->len);
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ret = usb_bulk_msg(usb_dev, cmd_pipe, skb->data, skb->len, &sent, 500);
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if (ret) {
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dev_err(dev->dev, "Error: send MCU cmd failed:%d\n", ret);
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goto out;
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}
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if (sent != skb->len)
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dev_err(dev->dev, "Error: %s sent != skb->len\n", __func__);
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if (wait_resp)
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ret = mt7601u_mcu_wait_resp(dev, seq);
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out:
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mutex_unlock(&dev->mcu.mutex);
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consume_skb(skb);
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return ret;
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}
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static int mt7601u_mcu_function_select(struct mt7601u_dev *dev,
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enum mcu_function func, u32 val)
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{
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struct sk_buff *skb;
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struct {
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__le32 id;
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__le32 value;
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} __packed __aligned(4) msg = {
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.id = cpu_to_le32(func),
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.value = cpu_to_le32(val),
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};
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skb = mt7601u_mcu_msg_alloc(dev, &msg, sizeof(msg));
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return mt7601u_mcu_msg_send(dev, skb, CMD_FUN_SET_OP, func == 5);
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}
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int mt7601u_mcu_tssi_read_kick(struct mt7601u_dev *dev, int use_hvga)
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{
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int ret;
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if (!test_bit(MT7601U_STATE_MCU_RUNNING, &dev->state))
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return 0;
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ret = mt7601u_mcu_function_select(dev, ATOMIC_TSSI_SETTING,
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use_hvga);
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if (ret) {
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dev_warn(dev->dev, "Warning: MCU TSSI read kick failed\n");
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return ret;
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}
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dev->tssi_read_trig = true;
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return 0;
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}
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int
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mt7601u_mcu_calibrate(struct mt7601u_dev *dev, enum mcu_calibrate cal, u32 val)
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{
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struct sk_buff *skb;
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struct {
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__le32 id;
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__le32 value;
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} __packed __aligned(4) msg = {
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.id = cpu_to_le32(cal),
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.value = cpu_to_le32(val),
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};
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skb = mt7601u_mcu_msg_alloc(dev, &msg, sizeof(msg));
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return mt7601u_mcu_msg_send(dev, skb, CMD_CALIBRATION_OP, true);
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}
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int mt7601u_write_reg_pairs(struct mt7601u_dev *dev, u32 base,
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const struct mt76_reg_pair *data, int n)
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{
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const int max_vals_per_cmd = INBAND_PACKET_MAX_LEN / 8;
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struct sk_buff *skb;
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int cnt, i, ret;
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if (!n)
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return 0;
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cnt = min(max_vals_per_cmd, n);
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skb = alloc_skb(cnt * 8 + MT_DMA_HDR_LEN + 4, GFP_KERNEL);
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if (!skb)
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return -ENOMEM;
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skb_reserve(skb, MT_DMA_HDR_LEN);
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for (i = 0; i < cnt; i++) {
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skb_put_le32(skb, base + data[i].reg);
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skb_put_le32(skb, data[i].value);
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}
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ret = mt7601u_mcu_msg_send(dev, skb, CMD_RANDOM_WRITE, cnt == n);
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if (ret)
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return ret;
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return mt7601u_write_reg_pairs(dev, base, data + cnt, n - cnt);
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}
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int mt7601u_burst_write_regs(struct mt7601u_dev *dev, u32 offset,
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const u32 *data, int n)
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{
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const int max_regs_per_cmd = INBAND_PACKET_MAX_LEN / 4 - 1;
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struct sk_buff *skb;
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int cnt, i, ret;
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if (!n)
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return 0;
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cnt = min(max_regs_per_cmd, n);
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skb = alloc_skb(cnt * 4 + MT_DMA_HDR_LEN + 4, GFP_KERNEL);
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if (!skb)
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return -ENOMEM;
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skb_reserve(skb, MT_DMA_HDR_LEN);
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skb_put_le32(skb, MT_MCU_MEMMAP_WLAN + offset);
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for (i = 0; i < cnt; i++)
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skb_put_le32(skb, data[i]);
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ret = mt7601u_mcu_msg_send(dev, skb, CMD_BURST_WRITE, cnt == n);
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if (ret)
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return ret;
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return mt7601u_burst_write_regs(dev, offset + cnt * 4,
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data + cnt, n - cnt);
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}
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struct mt76_fw_header {
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__le32 ilm_len;
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__le32 dlm_len;
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__le16 build_ver;
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__le16 fw_ver;
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u8 pad[4];
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char build_time[16];
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};
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struct mt76_fw {
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struct mt76_fw_header hdr;
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u8 ivb[MT_MCU_IVB_SIZE];
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u8 ilm[];
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};
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static int __mt7601u_dma_fw(struct mt7601u_dev *dev,
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const struct mt7601u_dma_buf *dma_buf,
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const void *data, u32 len, u32 dst_addr)
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{
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DECLARE_COMPLETION_ONSTACK(cmpl);
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struct mt7601u_dma_buf buf = *dma_buf; /* we need to fake length */
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__le32 reg;
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u32 val;
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int ret;
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reg = cpu_to_le32(MT76_SET(MT_TXD_INFO_TYPE, DMA_PACKET) |
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MT76_SET(MT_TXD_INFO_D_PORT, CPU_TX_PORT) |
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MT76_SET(MT_TXD_INFO_LEN, len));
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memcpy(buf.buf, ®, sizeof(reg));
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memcpy(buf.buf + sizeof(reg), data, len);
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memset(buf.buf + sizeof(reg) + len, 0, 8);
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ret = mt7601u_vendor_single_wr(dev, MT_VEND_WRITE_FCE,
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MT_FCE_DMA_ADDR, dst_addr);
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if (ret)
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return ret;
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len = roundup(len, 4);
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ret = mt7601u_vendor_single_wr(dev, MT_VEND_WRITE_FCE,
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MT_FCE_DMA_LEN, len << 16);
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if (ret)
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return ret;
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buf.len = MT_DMA_HDR_LEN + len + 4;
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ret = mt7601u_usb_submit_buf(dev, USB_DIR_OUT, MT_EP_OUT_INBAND_CMD,
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&buf, GFP_KERNEL,
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mt7601u_complete_urb, &cmpl);
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if (ret)
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return ret;
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if (!wait_for_completion_timeout(&cmpl, msecs_to_jiffies(1000))) {
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dev_err(dev->dev, "Error: firmware upload timed out\n");
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usb_kill_urb(buf.urb);
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return -ETIMEDOUT;
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}
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if (mt7601u_urb_has_error(buf.urb)) {
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dev_err(dev->dev, "Error: firmware upload urb failed:%d\n",
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buf.urb->status);
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return buf.urb->status;
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}
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val = mt7601u_rr(dev, MT_TX_CPU_FROM_FCE_CPU_DESC_IDX);
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val++;
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mt7601u_wr(dev, MT_TX_CPU_FROM_FCE_CPU_DESC_IDX, val);
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return 0;
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}
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static int
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mt7601u_dma_fw(struct mt7601u_dev *dev, struct mt7601u_dma_buf *dma_buf,
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const void *data, int len, u32 dst_addr)
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{
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int n, ret;
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if (len == 0)
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return 0;
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n = min(MCU_FW_URB_MAX_PAYLOAD, len);
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ret = __mt7601u_dma_fw(dev, dma_buf, data, n, dst_addr);
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if (ret)
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return ret;
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if (!mt76_poll_msec(dev, MT_MCU_COM_REG1, BIT(31), BIT(31), 500))
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return -ETIMEDOUT;
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return mt7601u_dma_fw(dev, dma_buf, data + n, len - n, dst_addr + n);
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}
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static int
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mt7601u_upload_firmware(struct mt7601u_dev *dev, const struct mt76_fw *fw)
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{
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struct mt7601u_dma_buf dma_buf;
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void *ivb;
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u32 ilm_len, dlm_len;
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int i, ret;
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ivb = kmemdup(fw->ivb, sizeof(fw->ivb), GFP_KERNEL);
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if (!ivb || mt7601u_usb_alloc_buf(dev, MCU_FW_URB_SIZE, &dma_buf)) {
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ret = -ENOMEM;
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goto error;
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}
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ilm_len = le32_to_cpu(fw->hdr.ilm_len) - sizeof(fw->ivb);
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dev_dbg(dev->dev, "loading FW - ILM %u + IVB %zu\n",
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ilm_len, sizeof(fw->ivb));
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ret = mt7601u_dma_fw(dev, &dma_buf, fw->ilm, ilm_len, sizeof(fw->ivb));
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if (ret)
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goto error;
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dlm_len = le32_to_cpu(fw->hdr.dlm_len);
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dev_dbg(dev->dev, "loading FW - DLM %u\n", dlm_len);
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ret = mt7601u_dma_fw(dev, &dma_buf, fw->ilm + ilm_len,
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dlm_len, MT_MCU_DLM_OFFSET);
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if (ret)
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goto error;
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ret = mt7601u_vendor_request(dev, MT_VEND_DEV_MODE, USB_DIR_OUT,
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0x12, 0, ivb, sizeof(fw->ivb));
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if (ret < 0)
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goto error;
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ret = 0;
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for (i = 100; i && !firmware_running(dev); i--)
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msleep(10);
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if (!i) {
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ret = -ETIMEDOUT;
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goto error;
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}
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dev_dbg(dev->dev, "Firmware running!\n");
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error:
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kfree(ivb);
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mt7601u_usb_free_buf(dev, &dma_buf);
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return ret;
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}
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static int mt7601u_load_firmware(struct mt7601u_dev *dev)
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{
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const struct firmware *fw;
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const struct mt76_fw_header *hdr;
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int len, ret;
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u32 val;
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mt7601u_wr(dev, MT_USB_DMA_CFG, (MT_USB_DMA_CFG_RX_BULK_EN |
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MT_USB_DMA_CFG_TX_BULK_EN));
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if (firmware_running(dev))
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return 0;
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ret = request_firmware(&fw, MT7601U_FIRMWARE, dev->dev);
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if (ret)
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return ret;
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if (!fw || !fw->data || fw->size < sizeof(*hdr))
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goto err_inv_fw;
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hdr = (const struct mt76_fw_header *) fw->data;
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if (le32_to_cpu(hdr->ilm_len) <= MT_MCU_IVB_SIZE)
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goto err_inv_fw;
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len = sizeof(*hdr);
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len += le32_to_cpu(hdr->ilm_len);
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len += le32_to_cpu(hdr->dlm_len);
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if (fw->size != len)
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goto err_inv_fw;
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val = le16_to_cpu(hdr->fw_ver);
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dev_info(dev->dev,
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"Firmware Version: %d.%d.%02d Build: %x Build time: %.16s\n",
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(val >> 12) & 0xf, (val >> 8) & 0xf, val & 0xf,
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le16_to_cpu(hdr->build_ver), hdr->build_time);
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len = le32_to_cpu(hdr->ilm_len);
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mt7601u_wr(dev, 0x94c, 0);
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mt7601u_wr(dev, MT_FCE_PSE_CTRL, 0);
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mt7601u_vendor_reset(dev);
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msleep(5);
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mt7601u_wr(dev, 0xa44, 0);
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mt7601u_wr(dev, 0x230, 0x84210);
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mt7601u_wr(dev, 0x400, 0x80c00);
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mt7601u_wr(dev, 0x800, 1);
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mt7601u_rmw(dev, MT_PBF_CFG, 0, (MT_PBF_CFG_TX0Q_EN |
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MT_PBF_CFG_TX1Q_EN |
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MT_PBF_CFG_TX2Q_EN |
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MT_PBF_CFG_TX3Q_EN));
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mt7601u_wr(dev, MT_FCE_PSE_CTRL, 1);
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mt7601u_wr(dev, MT_USB_DMA_CFG, (MT_USB_DMA_CFG_RX_BULK_EN |
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MT_USB_DMA_CFG_TX_BULK_EN));
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val = mt76_set(dev, MT_USB_DMA_CFG, MT_USB_DMA_CFG_TX_CLR);
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val &= ~MT_USB_DMA_CFG_TX_CLR;
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mt7601u_wr(dev, MT_USB_DMA_CFG, val);
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/* FCE tx_fs_base_ptr */
|
|
mt7601u_wr(dev, MT_TX_CPU_FROM_FCE_BASE_PTR, 0x400230);
|
|
/* FCE tx_fs_max_cnt */
|
|
mt7601u_wr(dev, MT_TX_CPU_FROM_FCE_MAX_COUNT, 1);
|
|
/* FCE pdma enable */
|
|
mt7601u_wr(dev, MT_FCE_PDMA_GLOBAL_CONF, 0x44);
|
|
/* FCE skip_fs_en */
|
|
mt7601u_wr(dev, MT_FCE_SKIP_FS, 3);
|
|
|
|
ret = mt7601u_upload_firmware(dev, (const struct mt76_fw *)fw->data);
|
|
|
|
release_firmware(fw);
|
|
|
|
return ret;
|
|
|
|
err_inv_fw:
|
|
dev_err(dev->dev, "Invalid firmware image\n");
|
|
release_firmware(fw);
|
|
return -ENOENT;
|
|
}
|
|
|
|
int mt7601u_mcu_init(struct mt7601u_dev *dev)
|
|
{
|
|
int ret;
|
|
|
|
mutex_init(&dev->mcu.mutex);
|
|
|
|
ret = mt7601u_load_firmware(dev);
|
|
if (ret)
|
|
return ret;
|
|
|
|
set_bit(MT7601U_STATE_MCU_RUNNING, &dev->state);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int mt7601u_mcu_cmd_init(struct mt7601u_dev *dev)
|
|
{
|
|
int ret;
|
|
|
|
ret = mt7601u_mcu_function_select(dev, Q_SELECT, 1);
|
|
if (ret)
|
|
return ret;
|
|
|
|
init_completion(&dev->mcu.resp_cmpl);
|
|
if (mt7601u_usb_alloc_buf(dev, MCU_RESP_URB_SIZE, &dev->mcu.resp)) {
|
|
mt7601u_usb_free_buf(dev, &dev->mcu.resp);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
ret = mt7601u_usb_submit_buf(dev, USB_DIR_IN, MT_EP_IN_CMD_RESP,
|
|
&dev->mcu.resp, GFP_KERNEL,
|
|
mt7601u_complete_urb, &dev->mcu.resp_cmpl);
|
|
if (ret) {
|
|
mt7601u_usb_free_buf(dev, &dev->mcu.resp);
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
void mt7601u_mcu_cmd_deinit(struct mt7601u_dev *dev)
|
|
{
|
|
usb_kill_urb(dev->mcu.resp.urb);
|
|
mt7601u_usb_free_buf(dev, &dev->mcu.resp);
|
|
}
|