1 /* 2 * Copyright (C) 2018 Lorenzo Bianconi <lorenzo.bianconi83@gmail.com> 3 * 4 * Permission to use, copy, modify, and/or distribute this software for any 5 * purpose with or without fee is hereby granted, provided that the above 6 * copyright notice and this permission notice appear in all copies. 7 * 8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 15 */ 16 #include <linux/kernel.h> 17 #include <linux/firmware.h> 18 19 #include "mt76x0.h" 20 #include "mcu.h" 21 22 #define MT_MCU_IVB_ADDR (MT_MCU_ILM_ADDR + 0x54000 - MT_MCU_IVB_SIZE) 23 24 static int mt76x0e_load_firmware(struct mt76x02_dev *dev) 25 { 26 bool is_combo_chip = mt76_chip(&dev->mt76) != 0x7610; 27 u32 val, ilm_len, dlm_len, offset = 0; 28 const struct mt76x02_fw_header *hdr; 29 const struct firmware *fw; 30 const char *firmware; 31 const u8 *fw_payload; 32 int len, err; 33 34 if (is_combo_chip) 35 firmware = MT7650E_FIRMWARE; 36 else 37 firmware = MT7610E_FIRMWARE; 38 39 err = request_firmware(&fw, firmware, dev->mt76.dev); 40 if (err) 41 return err; 42 43 if (!fw || !fw->data || fw->size < sizeof(*hdr)) { 44 err = -EIO; 45 goto out; 46 } 47 48 hdr = (const struct mt76x02_fw_header *)fw->data; 49 50 len = sizeof(*hdr); 51 len += le32_to_cpu(hdr->ilm_len); 52 len += le32_to_cpu(hdr->dlm_len); 53 54 if (fw->size != len) { 55 err = -EIO; 56 goto out; 57 } 58 59 fw_payload = fw->data + sizeof(*hdr); 60 61 val = le16_to_cpu(hdr->fw_ver); 62 dev_info(dev->mt76.dev, "Firmware Version: %d.%d.%02d\n", 63 (val >> 12) & 0xf, (val >> 8) & 0xf, val & 0xf); 64 65 val = le16_to_cpu(hdr->fw_ver); 66 dev_dbg(dev->mt76.dev, 67 "Firmware Version: %d.%d.%02d Build: %x Build time: %.16s\n", 68 (val >> 12) & 0xf, (val >> 8) & 0xf, val & 0xf, 69 le16_to_cpu(hdr->build_ver), hdr->build_time); 70 71 if (is_combo_chip && !mt76_poll(dev, MT_MCU_SEMAPHORE_00, 1, 1, 600)) { 72 dev_err(dev->mt76.dev, 73 "Could not get hardware semaphore for loading fw\n"); 74 err = -ETIMEDOUT; 75 goto out; 76 } 77 78 /* upload ILM. */ 79 mt76_wr(dev, MT_MCU_PCIE_REMAP_BASE4, 0); 80 ilm_len = le32_to_cpu(hdr->ilm_len); 81 if (is_combo_chip) { 82 ilm_len -= MT_MCU_IVB_SIZE; 83 offset = MT_MCU_IVB_SIZE; 84 } 85 dev_dbg(dev->mt76.dev, "loading FW - ILM %u\n", ilm_len); 86 mt76_wr_copy(dev, MT_MCU_ILM_ADDR + offset, fw_payload + offset, 87 ilm_len); 88 89 /* upload IVB. */ 90 if (is_combo_chip) { 91 dev_dbg(dev->mt76.dev, "loading FW - IVB %u\n", 92 MT_MCU_IVB_SIZE); 93 mt76_wr_copy(dev, MT_MCU_IVB_ADDR, fw_payload, MT_MCU_IVB_SIZE); 94 } 95 96 /* upload DLM. */ 97 mt76_wr(dev, MT_MCU_PCIE_REMAP_BASE4, MT_MCU_DLM_OFFSET); 98 dlm_len = le32_to_cpu(hdr->dlm_len); 99 dev_dbg(dev->mt76.dev, "loading FW - DLM %u\n", dlm_len); 100 mt76_wr_copy(dev, MT_MCU_ILM_ADDR, 101 fw_payload + le32_to_cpu(hdr->ilm_len), dlm_len); 102 103 /* trigger firmware */ 104 mt76_wr(dev, MT_MCU_PCIE_REMAP_BASE4, 0); 105 if (is_combo_chip) 106 mt76_wr(dev, MT_MCU_INT_LEVEL, 0x3); 107 else 108 mt76_wr(dev, MT_MCU_RESET_CTL, 0x300); 109 110 if (!mt76_poll_msec(dev, MT_MCU_COM_REG0, 1, 1, 1000)) { 111 dev_err(dev->mt76.dev, "Firmware failed to start\n"); 112 err = -ETIMEDOUT; 113 goto out; 114 } 115 116 mt76x02_set_ethtool_fwver(dev, hdr); 117 dev_dbg(dev->mt76.dev, "Firmware running!\n"); 118 119 out: 120 if (is_combo_chip) 121 mt76_wr(dev, MT_MCU_SEMAPHORE_00, 0x1); 122 release_firmware(fw); 123 124 return err; 125 } 126 127 int mt76x0e_mcu_init(struct mt76x02_dev *dev) 128 { 129 static const struct mt76_mcu_ops mt76x0e_mcu_ops = { 130 .mcu_send_msg = mt76x02_mcu_msg_send, 131 }; 132 int err; 133 134 dev->mt76.mcu_ops = &mt76x0e_mcu_ops; 135 136 err = mt76x0e_load_firmware(dev); 137 if (err < 0) 138 return err; 139 140 set_bit(MT76_STATE_MCU_RUNNING, &dev->mt76.state); 141 142 return 0; 143 } 144