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 13 static 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"); 107 108 out: 109 if (is_combo_chip) 110 mt76_wr(dev, MT_MCU_SEMAPHORE_00, 0x1); 111 release_firmware(fw); 112 113 return err; 114 } 115 116 int 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 }; 121 int err; 122 123 dev->mt76.mcu_ops = &mt76x0e_mcu_ops; 124 125 err = mt76x0e_load_firmware(dev); 126 if (err < 0) 127 return err; 128 129 set_bit(MT76_STATE_MCU_RUNNING, &dev->mt76.state); 130 131 return 0; 132 } 133