1// SPDX-License-Identifier: ISC
2/*
3 * Copyright (C) 2018 Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>
4 */
5#include <linux/kernel.h>
6#include <linux/firmware.h>
7
8#include "mt76x0.h"
9#include "mcu.h"
10
11#define MT_MCU_IVB_ADDR		(MT_MCU_ILM_ADDR + 0x54000 - MT_MCU_IVB_SIZE)
12
13static int mt76x0e_load_firmware(struct mt76x02_dev *dev)
14{
15	bool is_combo_chip = mt76_chip(&dev->mt76) != 0x7610;
16	u32 val, ilm_len, dlm_len, offset = 0;
17	const struct mt76x02_fw_header *hdr;
18	const struct firmware *fw;
19	const char *firmware;
20	const u8 *fw_payload;
21	int len, err;
22
23	if (is_combo_chip)
24		firmware = MT7650E_FIRMWARE;
25	else
26		firmware = MT7610E_FIRMWARE;
27
28	err = request_firmware(&fw, firmware, dev->mt76.dev);
29	if (err)
30		return err;
31
32	if (!fw || !fw->data || fw->size < sizeof(*hdr)) {
33		err = -EIO;
34		goto out;
35	}
36
37	hdr = (const struct mt76x02_fw_header *)fw->data;
38
39	len = sizeof(*hdr);
40	len += le32_to_cpu(hdr->ilm_len);
41	len += le32_to_cpu(hdr->dlm_len);
42
43	if (fw->size != len) {
44		err = -EIO;
45		goto out;
46	}
47
48	fw_payload = fw->data + sizeof(*hdr);
49
50	val = le16_to_cpu(hdr->fw_ver);
51	dev_info(dev->mt76.dev, "Firmware Version: %d.%d.%02d\n",
52		 (val >> 12) & 0xf, (val >> 8) & 0xf, val & 0xf);
53
54	val = le16_to_cpu(hdr->fw_ver);
55	dev_dbg(dev->mt76.dev,
56		"Firmware Version: %d.%d.%02d Build: %x Build time: %.16s\n",
57		(val >> 12) & 0xf, (val >> 8) & 0xf, val & 0xf,
58		le16_to_cpu(hdr->build_ver), hdr->build_time);
59
60	if (is_combo_chip && !mt76_poll(dev, MT_MCU_SEMAPHORE_00, 1, 1, 600)) {
61		dev_err(dev->mt76.dev,
62			"Could not get hardware semaphore for loading fw\n");
63		err = -ETIMEDOUT;
64		goto out;
65	}
66
67	/* upload ILM. */
68	mt76_wr(dev, MT_MCU_PCIE_REMAP_BASE4, 0);
69	ilm_len = le32_to_cpu(hdr->ilm_len);
70	if (is_combo_chip) {
71		ilm_len -= MT_MCU_IVB_SIZE;
72		offset = MT_MCU_IVB_SIZE;
73	}
74	dev_dbg(dev->mt76.dev, "loading FW - ILM %u\n", ilm_len);
75	mt76_wr_copy(dev, MT_MCU_ILM_ADDR + offset, fw_payload + offset,
76		     ilm_len);
77
78	/* upload IVB. */
79	if (is_combo_chip) {
80		dev_dbg(dev->mt76.dev, "loading FW - IVB %u\n",
81			MT_MCU_IVB_SIZE);
82		mt76_wr_copy(dev, MT_MCU_IVB_ADDR, fw_payload, MT_MCU_IVB_SIZE);
83	}
84
85	/* upload DLM. */
86	mt76_wr(dev, MT_MCU_PCIE_REMAP_BASE4, MT_MCU_DLM_OFFSET);
87	dlm_len = le32_to_cpu(hdr->dlm_len);
88	dev_dbg(dev->mt76.dev, "loading FW - DLM %u\n", dlm_len);
89	mt76_wr_copy(dev, MT_MCU_ILM_ADDR,
90		     fw_payload + le32_to_cpu(hdr->ilm_len), dlm_len);
91
92	/* trigger firmware */
93	mt76_wr(dev, MT_MCU_PCIE_REMAP_BASE4, 0);
94	if (is_combo_chip)
95		mt76_wr(dev, MT_MCU_INT_LEVEL, 0x3);
96	else
97		mt76_wr(dev, MT_MCU_RESET_CTL, 0x300);
98
99	if (!mt76_poll_msec(dev, MT_MCU_COM_REG0, 1, 1, 1000)) {
100		dev_err(dev->mt76.dev, "Firmware failed to start\n");
101		err = -ETIMEDOUT;
102		goto out;
103	}
104
105	mt76x02_set_ethtool_fwver(dev, hdr);
106	dev_dbg(dev->mt76.dev, "Firmware running!\n");
107
108out:
109	if (is_combo_chip)
110		mt76_wr(dev, MT_MCU_SEMAPHORE_00, 0x1);
111	release_firmware(fw);
112
113	return err;
114}
115
116int mt76x0e_mcu_init(struct mt76x02_dev *dev)
117{
118	static const struct mt76_mcu_ops mt76x0e_mcu_ops = {
119		.mcu_send_msg = mt76x02_mcu_msg_send,
120		.mcu_parse_response = mt76x02_mcu_parse_response,
121	};
122	int err;
123
124	dev->mt76.mcu_ops = &mt76x0e_mcu_ops;
125
126	err = mt76x0e_load_firmware(dev);
127	if (err < 0)
128		return err;
129
130	set_bit(MT76_STATE_MCU_RUNNING, &dev->mphy.state);
131
132	return 0;
133}
134