256 lines
6.2 KiB
C
256 lines
6.2 KiB
C
// SPDX-License-Identifier: ISC
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/*
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* Copyright (C) 2018 Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>
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*/
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#include <linux/firmware.h>
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#include "mt76x2u.h"
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#include "eeprom.h"
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#include "../mt76x02_usb.h"
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#define MT_CMD_HDR_LEN 4
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#define MCU_FW_URB_MAX_PAYLOAD 0x3900
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#define MCU_ROM_PATCH_MAX_PAYLOAD 2048
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#define MT76U_MCU_ILM_OFFSET 0x80000
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#define MT76U_MCU_DLM_OFFSET 0x110000
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#define MT76U_MCU_ROM_PATCH_OFFSET 0x90000
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static void mt76x2u_mcu_load_ivb(struct mt76x02_dev *dev)
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{
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mt76u_vendor_request(&dev->mt76, MT_VEND_DEV_MODE,
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USB_DIR_OUT | USB_TYPE_VENDOR,
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0x12, 0, NULL, 0);
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}
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static void mt76x2u_mcu_enable_patch(struct mt76x02_dev *dev)
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{
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struct mt76_usb *usb = &dev->mt76.usb;
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static const u8 data[] = {
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0x6f, 0xfc, 0x08, 0x01,
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0x20, 0x04, 0x00, 0x00,
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0x00, 0x09, 0x00,
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};
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memcpy(usb->data, data, sizeof(data));
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mt76u_vendor_request(&dev->mt76, MT_VEND_DEV_MODE,
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USB_DIR_OUT | USB_TYPE_CLASS,
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0x12, 0, usb->data, sizeof(data));
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}
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static void mt76x2u_mcu_reset_wmt(struct mt76x02_dev *dev)
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{
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struct mt76_usb *usb = &dev->mt76.usb;
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u8 data[] = {
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0x6f, 0xfc, 0x05, 0x01,
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0x07, 0x01, 0x00, 0x04
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};
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memcpy(usb->data, data, sizeof(data));
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mt76u_vendor_request(&dev->mt76, MT_VEND_DEV_MODE,
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USB_DIR_OUT | USB_TYPE_CLASS,
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0x12, 0, usb->data, sizeof(data));
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}
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static int mt76x2u_mcu_load_rom_patch(struct mt76x02_dev *dev)
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{
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bool rom_protect = !is_mt7612(dev);
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struct mt76x02_patch_header *hdr;
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u32 val, patch_mask, patch_reg;
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const struct firmware *fw;
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int err;
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if (rom_protect &&
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!mt76_poll_msec(dev, MT_MCU_SEMAPHORE_03, 1, 1, 600)) {
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dev_err(dev->mt76.dev,
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"could not get hardware semaphore for ROM PATCH\n");
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return -ETIMEDOUT;
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}
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if (mt76xx_rev(dev) >= MT76XX_REV_E3) {
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patch_mask = BIT(0);
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patch_reg = MT_MCU_CLOCK_CTL;
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} else {
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patch_mask = BIT(1);
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patch_reg = MT_MCU_COM_REG0;
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}
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if (rom_protect && (mt76_rr(dev, patch_reg) & patch_mask)) {
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dev_info(dev->mt76.dev, "ROM patch already applied\n");
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return 0;
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}
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err = request_firmware(&fw, MT7662_ROM_PATCH, dev->mt76.dev);
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if (err < 0)
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return err;
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if (!fw || !fw->data || fw->size <= sizeof(*hdr)) {
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dev_err(dev->mt76.dev, "failed to load firmware\n");
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err = -EIO;
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goto out;
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}
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hdr = (struct mt76x02_patch_header *)fw->data;
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dev_info(dev->mt76.dev, "ROM patch build: %.15s\n", hdr->build_time);
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/* enable USB_DMA_CFG */
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val = MT_USB_DMA_CFG_RX_BULK_EN |
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MT_USB_DMA_CFG_TX_BULK_EN |
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FIELD_PREP(MT_USB_DMA_CFG_RX_BULK_AGG_TOUT, 0x20);
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mt76_wr(dev, MT_VEND_ADDR(CFG, MT_USB_U3DMA_CFG), val);
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/* vendor reset */
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mt76x02u_mcu_fw_reset(dev);
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usleep_range(5000, 10000);
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/* enable FCE to send in-band cmd */
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mt76_wr(dev, MT_FCE_PSE_CTRL, 0x1);
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/* FCE tx_fs_base_ptr */
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mt76_wr(dev, MT_TX_CPU_FROM_FCE_BASE_PTR, 0x400230);
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/* FCE tx_fs_max_cnt */
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mt76_wr(dev, MT_TX_CPU_FROM_FCE_MAX_COUNT, 0x1);
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/* FCE pdma enable */
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mt76_wr(dev, MT_FCE_PDMA_GLOBAL_CONF, 0x44);
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/* FCE skip_fs_en */
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mt76_wr(dev, MT_FCE_SKIP_FS, 0x3);
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err = mt76x02u_mcu_fw_send_data(dev, fw->data + sizeof(*hdr),
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fw->size - sizeof(*hdr),
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MCU_ROM_PATCH_MAX_PAYLOAD,
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MT76U_MCU_ROM_PATCH_OFFSET);
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if (err < 0) {
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err = -EIO;
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goto out;
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}
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mt76x2u_mcu_enable_patch(dev);
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mt76x2u_mcu_reset_wmt(dev);
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mdelay(20);
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if (!mt76_poll_msec(dev, patch_reg, patch_mask, patch_mask, 100)) {
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dev_err(dev->mt76.dev, "failed to load ROM patch\n");
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err = -ETIMEDOUT;
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}
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out:
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if (rom_protect)
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mt76_wr(dev, MT_MCU_SEMAPHORE_03, 1);
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release_firmware(fw);
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return err;
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}
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static int mt76x2u_mcu_load_firmware(struct mt76x02_dev *dev)
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{
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u32 val, dlm_offset = MT76U_MCU_DLM_OFFSET;
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const struct mt76x02_fw_header *hdr;
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int err, len, ilm_len, dlm_len;
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const struct firmware *fw;
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err = request_firmware(&fw, MT7662_FIRMWARE, dev->mt76.dev);
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if (err < 0)
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return err;
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if (!fw || !fw->data || fw->size < sizeof(*hdr)) {
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err = -EINVAL;
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goto out;
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}
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hdr = (const struct mt76x02_fw_header *)fw->data;
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ilm_len = le32_to_cpu(hdr->ilm_len);
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dlm_len = le32_to_cpu(hdr->dlm_len);
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len = sizeof(*hdr) + ilm_len + dlm_len;
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if (fw->size != len) {
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err = -EINVAL;
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goto out;
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}
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val = le16_to_cpu(hdr->fw_ver);
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dev_info(dev->mt76.dev, "Firmware Version: %d.%d.%02d\n",
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(val >> 12) & 0xf, (val >> 8) & 0xf, val & 0xf);
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val = le16_to_cpu(hdr->build_ver);
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dev_info(dev->mt76.dev, "Build: %x\n", val);
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dev_info(dev->mt76.dev, "Build Time: %.16s\n", hdr->build_time);
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/* vendor reset */
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mt76x02u_mcu_fw_reset(dev);
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usleep_range(5000, 10000);
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/* enable USB_DMA_CFG */
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val = MT_USB_DMA_CFG_RX_BULK_EN |
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MT_USB_DMA_CFG_TX_BULK_EN |
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FIELD_PREP(MT_USB_DMA_CFG_RX_BULK_AGG_TOUT, 0x20);
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mt76_wr(dev, MT_VEND_ADDR(CFG, MT_USB_U3DMA_CFG), val);
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/* enable FCE to send in-band cmd */
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mt76_wr(dev, MT_FCE_PSE_CTRL, 0x1);
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/* FCE tx_fs_base_ptr */
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mt76_wr(dev, MT_TX_CPU_FROM_FCE_BASE_PTR, 0x400230);
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/* FCE tx_fs_max_cnt */
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mt76_wr(dev, MT_TX_CPU_FROM_FCE_MAX_COUNT, 0x1);
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/* FCE pdma enable */
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mt76_wr(dev, MT_FCE_PDMA_GLOBAL_CONF, 0x44);
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/* FCE skip_fs_en */
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mt76_wr(dev, MT_FCE_SKIP_FS, 0x3);
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/* load ILM */
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err = mt76x02u_mcu_fw_send_data(dev, fw->data + sizeof(*hdr),
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ilm_len, MCU_FW_URB_MAX_PAYLOAD,
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MT76U_MCU_ILM_OFFSET);
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if (err < 0) {
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err = -EIO;
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goto out;
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}
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/* load DLM */
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if (mt76xx_rev(dev) >= MT76XX_REV_E3)
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dlm_offset += 0x800;
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err = mt76x02u_mcu_fw_send_data(dev, fw->data + sizeof(*hdr) + ilm_len,
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dlm_len, MCU_FW_URB_MAX_PAYLOAD,
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dlm_offset);
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if (err < 0) {
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err = -EIO;
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goto out;
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}
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mt76x2u_mcu_load_ivb(dev);
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if (!mt76_poll_msec(dev, MT_MCU_COM_REG0, 1, 1, 100)) {
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dev_err(dev->mt76.dev, "firmware failed to start\n");
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err = -ETIMEDOUT;
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goto out;
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}
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mt76_set(dev, MT_MCU_COM_REG0, BIT(1));
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/* enable FCE to send in-band cmd */
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mt76_wr(dev, MT_FCE_PSE_CTRL, 0x1);
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mt76x02_set_ethtool_fwver(dev, hdr);
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dev_dbg(dev->mt76.dev, "firmware running\n");
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out:
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release_firmware(fw);
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return err;
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}
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int mt76x2u_mcu_fw_init(struct mt76x02_dev *dev)
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{
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int err;
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err = mt76x2u_mcu_load_rom_patch(dev);
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if (err < 0)
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return err;
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return mt76x2u_mcu_load_firmware(dev);
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}
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int mt76x2u_mcu_init(struct mt76x02_dev *dev)
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{
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int err;
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err = mt76x02_mcu_function_select(dev, Q_SELECT, 1);
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if (err < 0)
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return err;
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return mt76x02_mcu_set_radio_state(dev, true);
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}
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