developer | b11a539 | 2022-03-31 00:34:47 +0800 | [diff] [blame] | 1 | // SPDX-License-Identifier: ISC |
| 2 | /* |
| 3 | * Copyright (C) 2016 Felix Fietkau <nbd@nbd.name> |
| 4 | */ |
| 5 | |
| 6 | #include <linux/kernel.h> |
| 7 | #include <linux/firmware.h> |
| 8 | #include <linux/delay.h> |
| 9 | |
| 10 | #include "mt76x2.h" |
| 11 | #include "mcu.h" |
| 12 | #include "eeprom.h" |
| 13 | |
| 14 | static int |
| 15 | mt76pci_load_rom_patch(struct mt76x02_dev *dev) |
| 16 | { |
| 17 | const struct firmware *fw = NULL; |
| 18 | struct mt76x02_patch_header *hdr; |
| 19 | bool rom_protect = !is_mt7612(dev); |
| 20 | int len, ret = 0; |
| 21 | __le32 *cur; |
| 22 | u32 patch_mask, patch_reg; |
| 23 | |
| 24 | if (rom_protect && !mt76_poll(dev, MT_MCU_SEMAPHORE_03, 1, 1, 600)) { |
| 25 | dev_err(dev->mt76.dev, |
| 26 | "Could not get hardware semaphore for ROM PATCH\n"); |
| 27 | return -ETIMEDOUT; |
| 28 | } |
| 29 | |
| 30 | if (mt76xx_rev(dev) >= MT76XX_REV_E3) { |
| 31 | patch_mask = BIT(0); |
| 32 | patch_reg = MT_MCU_CLOCK_CTL; |
| 33 | } else { |
| 34 | patch_mask = BIT(1); |
| 35 | patch_reg = MT_MCU_COM_REG0; |
| 36 | } |
| 37 | |
| 38 | if (rom_protect && (mt76_rr(dev, patch_reg) & patch_mask)) { |
| 39 | dev_info(dev->mt76.dev, "ROM patch already applied\n"); |
| 40 | goto out; |
| 41 | } |
| 42 | |
| 43 | ret = request_firmware(&fw, MT7662_ROM_PATCH, dev->mt76.dev); |
| 44 | if (ret) |
| 45 | goto out; |
| 46 | |
| 47 | if (!fw || !fw->data || fw->size <= sizeof(*hdr)) { |
| 48 | ret = -EIO; |
| 49 | dev_err(dev->mt76.dev, "Failed to load firmware\n"); |
| 50 | goto out; |
| 51 | } |
| 52 | |
| 53 | hdr = (struct mt76x02_patch_header *)fw->data; |
| 54 | dev_info(dev->mt76.dev, "ROM patch build: %.15s\n", hdr->build_time); |
| 55 | |
| 56 | mt76_wr(dev, MT_MCU_PCIE_REMAP_BASE4, MT_MCU_ROM_PATCH_OFFSET); |
| 57 | |
| 58 | cur = (__le32 *)(fw->data + sizeof(*hdr)); |
| 59 | len = fw->size - sizeof(*hdr); |
| 60 | mt76_wr_copy(dev, MT_MCU_ROM_PATCH_ADDR, cur, len); |
| 61 | |
| 62 | mt76_wr(dev, MT_MCU_PCIE_REMAP_BASE4, 0); |
| 63 | |
| 64 | /* Trigger ROM */ |
| 65 | mt76_wr(dev, MT_MCU_INT_LEVEL, 4); |
| 66 | |
| 67 | if (!mt76_poll_msec(dev, patch_reg, patch_mask, patch_mask, 2000)) { |
| 68 | dev_err(dev->mt76.dev, "Failed to load ROM patch\n"); |
| 69 | ret = -ETIMEDOUT; |
| 70 | } |
| 71 | |
| 72 | out: |
| 73 | /* release semaphore */ |
| 74 | if (rom_protect) |
| 75 | mt76_wr(dev, MT_MCU_SEMAPHORE_03, 1); |
| 76 | release_firmware(fw); |
| 77 | return ret; |
| 78 | } |
| 79 | |
| 80 | static int |
| 81 | mt76pci_load_firmware(struct mt76x02_dev *dev) |
| 82 | { |
| 83 | const struct firmware *fw; |
| 84 | const struct mt76x02_fw_header *hdr; |
| 85 | int len, ret; |
| 86 | __le32 *cur; |
| 87 | u32 offset, val; |
| 88 | |
| 89 | ret = request_firmware(&fw, MT7662_FIRMWARE, dev->mt76.dev); |
| 90 | if (ret) |
| 91 | return ret; |
| 92 | |
| 93 | if (!fw || !fw->data || fw->size < sizeof(*hdr)) |
| 94 | goto error; |
| 95 | |
| 96 | hdr = (const struct mt76x02_fw_header *)fw->data; |
| 97 | |
| 98 | len = sizeof(*hdr); |
| 99 | len += le32_to_cpu(hdr->ilm_len); |
| 100 | len += le32_to_cpu(hdr->dlm_len); |
| 101 | |
| 102 | if (fw->size != len) |
| 103 | goto error; |
| 104 | |
| 105 | val = le16_to_cpu(hdr->fw_ver); |
| 106 | dev_info(dev->mt76.dev, "Firmware Version: %d.%d.%02d\n", |
| 107 | (val >> 12) & 0xf, (val >> 8) & 0xf, val & 0xf); |
| 108 | |
| 109 | val = le16_to_cpu(hdr->build_ver); |
| 110 | dev_info(dev->mt76.dev, "Build: %x\n", val); |
| 111 | dev_info(dev->mt76.dev, "Build Time: %.16s\n", hdr->build_time); |
| 112 | |
| 113 | cur = (__le32 *)(fw->data + sizeof(*hdr)); |
| 114 | len = le32_to_cpu(hdr->ilm_len); |
| 115 | |
| 116 | mt76_wr(dev, MT_MCU_PCIE_REMAP_BASE4, MT_MCU_ILM_OFFSET); |
| 117 | mt76_wr_copy(dev, MT_MCU_ILM_ADDR, cur, len); |
| 118 | |
| 119 | cur += len / sizeof(*cur); |
| 120 | len = le32_to_cpu(hdr->dlm_len); |
| 121 | |
| 122 | if (mt76xx_rev(dev) >= MT76XX_REV_E3) |
| 123 | offset = MT_MCU_DLM_ADDR_E3; |
| 124 | else |
| 125 | offset = MT_MCU_DLM_ADDR; |
| 126 | |
| 127 | mt76_wr(dev, MT_MCU_PCIE_REMAP_BASE4, MT_MCU_DLM_OFFSET); |
| 128 | mt76_wr_copy(dev, offset, cur, len); |
| 129 | |
| 130 | mt76_wr(dev, MT_MCU_PCIE_REMAP_BASE4, 0); |
| 131 | |
| 132 | val = mt76x02_eeprom_get(dev, MT_EE_NIC_CONF_2); |
| 133 | if (FIELD_GET(MT_EE_NIC_CONF_2_XTAL_OPTION, val) == 1) |
| 134 | mt76_set(dev, MT_MCU_COM_REG0, BIT(30)); |
| 135 | |
| 136 | /* trigger firmware */ |
| 137 | mt76_wr(dev, MT_MCU_INT_LEVEL, 2); |
| 138 | if (!mt76_poll_msec(dev, MT_MCU_COM_REG0, 1, 1, 200)) { |
| 139 | dev_err(dev->mt76.dev, "Firmware failed to start\n"); |
| 140 | release_firmware(fw); |
| 141 | return -ETIMEDOUT; |
| 142 | } |
| 143 | |
| 144 | mt76x02_set_ethtool_fwver(dev, hdr); |
| 145 | dev_info(dev->mt76.dev, "Firmware running!\n"); |
| 146 | |
| 147 | release_firmware(fw); |
| 148 | |
| 149 | return ret; |
| 150 | |
| 151 | error: |
| 152 | dev_err(dev->mt76.dev, "Invalid firmware\n"); |
| 153 | release_firmware(fw); |
| 154 | return -ENOENT; |
| 155 | } |
| 156 | |
| 157 | static int |
| 158 | mt76pci_mcu_restart(struct mt76_dev *mdev) |
| 159 | { |
| 160 | struct mt76x02_dev *dev; |
| 161 | int ret; |
| 162 | |
| 163 | dev = container_of(mdev, struct mt76x02_dev, mt76); |
| 164 | |
| 165 | mt76x02_mcu_cleanup(dev); |
| 166 | mt76x2_mac_reset(dev, true); |
| 167 | |
| 168 | ret = mt76pci_load_firmware(dev); |
| 169 | if (ret) |
| 170 | return ret; |
| 171 | |
| 172 | mt76_wr(dev, MT_WPDMA_RST_IDX, ~0); |
| 173 | |
| 174 | return 0; |
| 175 | } |
| 176 | |
| 177 | int mt76x2_mcu_init(struct mt76x02_dev *dev) |
| 178 | { |
| 179 | static const struct mt76_mcu_ops mt76x2_mcu_ops = { |
| 180 | .mcu_restart = mt76pci_mcu_restart, |
| 181 | .mcu_send_msg = mt76x02_mcu_msg_send, |
| 182 | .mcu_parse_response = mt76x02_mcu_parse_response, |
| 183 | }; |
| 184 | int ret; |
| 185 | |
| 186 | dev->mt76.mcu_ops = &mt76x2_mcu_ops; |
| 187 | |
| 188 | ret = mt76pci_load_rom_patch(dev); |
| 189 | if (ret) |
| 190 | return ret; |
| 191 | |
| 192 | ret = mt76pci_load_firmware(dev); |
| 193 | if (ret) |
| 194 | return ret; |
| 195 | |
| 196 | mt76x02_mcu_function_select(dev, Q_SELECT, 1); |
| 197 | return 0; |
| 198 | } |