developer | b11a539 | 2022-03-31 00:34:47 +0800 | [diff] [blame] | 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 | #include <linux/module.h> |
| 8 | |
| 9 | #include "mt76x0.h" |
| 10 | #include "mcu.h" |
| 11 | #include "../mt76x02_usb.h" |
| 12 | |
| 13 | #define MCU_FW_URB_MAX_PAYLOAD 0x38f8 |
| 14 | #define MCU_FW_URB_SIZE (MCU_FW_URB_MAX_PAYLOAD + 12) |
| 15 | |
| 16 | static int |
| 17 | mt76x0u_upload_firmware(struct mt76x02_dev *dev, |
| 18 | const struct mt76x02_fw_header *hdr) |
| 19 | { |
| 20 | u8 *fw_payload = (u8 *)(hdr + 1); |
| 21 | u32 ilm_len, dlm_len; |
| 22 | void *ivb; |
| 23 | int err; |
| 24 | |
| 25 | ivb = kmemdup(fw_payload, MT_MCU_IVB_SIZE, GFP_KERNEL); |
| 26 | if (!ivb) |
| 27 | return -ENOMEM; |
| 28 | |
| 29 | ilm_len = le32_to_cpu(hdr->ilm_len) - MT_MCU_IVB_SIZE; |
| 30 | dev_dbg(dev->mt76.dev, "loading FW - ILM %u + IVB %u\n", |
| 31 | ilm_len, MT_MCU_IVB_SIZE); |
| 32 | err = mt76x02u_mcu_fw_send_data(dev, fw_payload + MT_MCU_IVB_SIZE, |
| 33 | ilm_len, MCU_FW_URB_MAX_PAYLOAD, |
| 34 | MT_MCU_IVB_SIZE); |
| 35 | if (err) |
| 36 | goto out; |
| 37 | |
| 38 | dlm_len = le32_to_cpu(hdr->dlm_len); |
| 39 | dev_dbg(dev->mt76.dev, "loading FW - DLM %u\n", dlm_len); |
| 40 | err = mt76x02u_mcu_fw_send_data(dev, |
| 41 | fw_payload + le32_to_cpu(hdr->ilm_len), |
| 42 | dlm_len, MCU_FW_URB_MAX_PAYLOAD, |
| 43 | MT_MCU_DLM_OFFSET); |
| 44 | if (err) |
| 45 | goto out; |
| 46 | |
| 47 | err = mt76u_vendor_request(&dev->mt76, MT_VEND_DEV_MODE, |
| 48 | USB_DIR_OUT | USB_TYPE_VENDOR, |
| 49 | 0x12, 0, ivb, MT_MCU_IVB_SIZE); |
| 50 | if (err < 0) |
| 51 | goto out; |
| 52 | |
| 53 | if (!mt76_poll_msec(dev, MT_MCU_COM_REG0, 1, 1, 1000)) { |
| 54 | dev_err(dev->mt76.dev, "Firmware failed to start\n"); |
| 55 | err = -ETIMEDOUT; |
| 56 | goto out; |
| 57 | } |
| 58 | |
| 59 | dev_dbg(dev->mt76.dev, "Firmware running!\n"); |
| 60 | |
| 61 | out: |
| 62 | kfree(ivb); |
| 63 | |
| 64 | return err; |
| 65 | } |
| 66 | |
| 67 | static int mt76x0_get_firmware(struct mt76x02_dev *dev, |
| 68 | const struct firmware **fw) |
| 69 | { |
| 70 | int err; |
| 71 | |
| 72 | /* try to load mt7610e fw if available |
| 73 | * otherwise fall back to mt7610u one |
| 74 | */ |
| 75 | err = firmware_request_nowarn(fw, MT7610E_FIRMWARE, dev->mt76.dev); |
| 76 | if (err) { |
| 77 | dev_info(dev->mt76.dev, "%s not found, switching to %s", |
| 78 | MT7610E_FIRMWARE, MT7610U_FIRMWARE); |
| 79 | return request_firmware(fw, MT7610U_FIRMWARE, |
| 80 | dev->mt76.dev); |
| 81 | } |
| 82 | return 0; |
| 83 | } |
| 84 | |
| 85 | static int mt76x0u_load_firmware(struct mt76x02_dev *dev) |
| 86 | { |
| 87 | const struct firmware *fw; |
| 88 | const struct mt76x02_fw_header *hdr; |
| 89 | int len, ret; |
| 90 | u32 val; |
| 91 | |
| 92 | mt76_wr(dev, MT_USB_DMA_CFG, (MT_USB_DMA_CFG_RX_BULK_EN | |
| 93 | MT_USB_DMA_CFG_TX_BULK_EN)); |
| 94 | |
| 95 | if (mt76x0_firmware_running(dev)) |
| 96 | return 0; |
| 97 | |
| 98 | ret = mt76x0_get_firmware(dev, &fw); |
| 99 | if (ret) |
| 100 | return ret; |
| 101 | |
| 102 | if (!fw || !fw->data || fw->size < sizeof(*hdr)) |
| 103 | goto err_inv_fw; |
| 104 | |
| 105 | hdr = (const struct mt76x02_fw_header *)fw->data; |
| 106 | |
| 107 | if (le32_to_cpu(hdr->ilm_len) <= MT_MCU_IVB_SIZE) |
| 108 | goto err_inv_fw; |
| 109 | |
| 110 | len = sizeof(*hdr); |
| 111 | len += le32_to_cpu(hdr->ilm_len); |
| 112 | len += le32_to_cpu(hdr->dlm_len); |
| 113 | |
| 114 | if (fw->size != len) |
| 115 | goto err_inv_fw; |
| 116 | |
| 117 | val = le16_to_cpu(hdr->fw_ver); |
| 118 | dev_dbg(dev->mt76.dev, |
| 119 | "Firmware Version: %d.%d.%02d Build: %x Build time: %.16s\n", |
| 120 | (val >> 12) & 0xf, (val >> 8) & 0xf, val & 0xf, |
| 121 | le16_to_cpu(hdr->build_ver), hdr->build_time); |
| 122 | |
| 123 | len = le32_to_cpu(hdr->ilm_len); |
| 124 | |
| 125 | mt76_wr(dev, 0x1004, 0x2c); |
| 126 | |
| 127 | mt76_set(dev, MT_USB_DMA_CFG, |
| 128 | (MT_USB_DMA_CFG_RX_BULK_EN | MT_USB_DMA_CFG_TX_BULK_EN) | |
| 129 | FIELD_PREP(MT_USB_DMA_CFG_RX_BULK_AGG_TOUT, 0x20)); |
| 130 | mt76x02u_mcu_fw_reset(dev); |
| 131 | usleep_range(5000, 6000); |
| 132 | |
| 133 | mt76_wr(dev, MT_FCE_PSE_CTRL, 1); |
| 134 | |
| 135 | /* FCE tx_fs_base_ptr */ |
| 136 | mt76_wr(dev, MT_TX_CPU_FROM_FCE_BASE_PTR, 0x400230); |
| 137 | /* FCE tx_fs_max_cnt */ |
| 138 | mt76_wr(dev, MT_TX_CPU_FROM_FCE_MAX_COUNT, 1); |
| 139 | /* FCE pdma enable */ |
| 140 | mt76_wr(dev, MT_FCE_PDMA_GLOBAL_CONF, 0x44); |
| 141 | /* FCE skip_fs_en */ |
| 142 | mt76_wr(dev, MT_FCE_SKIP_FS, 3); |
| 143 | |
| 144 | val = mt76_rr(dev, MT_USB_DMA_CFG); |
| 145 | val |= MT_USB_DMA_CFG_UDMA_TX_WL_DROP; |
| 146 | mt76_wr(dev, MT_USB_DMA_CFG, val); |
| 147 | val &= ~MT_USB_DMA_CFG_UDMA_TX_WL_DROP; |
| 148 | mt76_wr(dev, MT_USB_DMA_CFG, val); |
| 149 | |
| 150 | ret = mt76x0u_upload_firmware(dev, hdr); |
| 151 | release_firmware(fw); |
| 152 | |
| 153 | mt76_wr(dev, MT_FCE_PSE_CTRL, 1); |
| 154 | |
| 155 | return ret; |
| 156 | |
| 157 | err_inv_fw: |
| 158 | dev_err(dev->mt76.dev, "Invalid firmware image\n"); |
| 159 | release_firmware(fw); |
| 160 | return -ENOENT; |
| 161 | } |
| 162 | |
| 163 | int mt76x0u_mcu_init(struct mt76x02_dev *dev) |
| 164 | { |
| 165 | int ret; |
| 166 | |
| 167 | ret = mt76x0u_load_firmware(dev); |
| 168 | if (ret < 0) |
| 169 | return ret; |
| 170 | |
| 171 | set_bit(MT76_STATE_MCU_RUNNING, &dev->mphy.state); |
| 172 | |
| 173 | return 0; |
| 174 | } |