diff options
Diffstat (limited to 'drivers/net/wireless/mediatek/mt76/mt76x0/pci_mcu.c')
| -rw-r--r-- | drivers/net/wireless/mediatek/mt76/mt76x0/pci_mcu.c | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/drivers/net/wireless/mediatek/mt76/mt76x0/pci_mcu.c b/drivers/net/wireless/mediatek/mt76/mt76x0/pci_mcu.c new file mode 100644 index 0000000..038187b --- /dev/null +++ b/drivers/net/wireless/mediatek/mt76/mt76x0/pci_mcu.c @@ -0,0 +1,132 @@ +// SPDX-License-Identifier: ISC +/* + * Copyright (C) 2018 Lorenzo Bianconi <lorenzo.bianconi83@gmail.com> + */ +#include <linux/kernel.h> +#include <linux/firmware.h> + +#include "mt76x0.h" +#include "mcu.h" + +#define MT_MCU_IVB_ADDR (MT_MCU_ILM_ADDR + 0x54000 - MT_MCU_IVB_SIZE) + +static int mt76x0e_load_firmware(struct mt76x02_dev *dev) +{ + bool is_combo_chip = mt76_chip(&dev->mt76) != 0x7610; + u32 val, ilm_len, dlm_len, offset = 0; + const struct mt76x02_fw_header *hdr; + const struct firmware *fw; + const char *firmware; + const u8 *fw_payload; + int len, err; + + if (is_combo_chip) + firmware = MT7650E_FIRMWARE; + else + firmware = MT7610E_FIRMWARE; + + err = request_firmware(&fw, firmware, dev->mt76.dev); + if (err) + return err; + + if (!fw || !fw->data || fw->size < sizeof(*hdr)) { + err = -EIO; + goto out; + } + + hdr = (const struct mt76x02_fw_header *)fw->data; + + len = sizeof(*hdr); + len += le32_to_cpu(hdr->ilm_len); + len += le32_to_cpu(hdr->dlm_len); + + if (fw->size != len) { + err = -EIO; + goto out; + } + + fw_payload = fw->data + sizeof(*hdr); + + val = le16_to_cpu(hdr->fw_ver); + dev_info(dev->mt76.dev, "Firmware Version: %d.%d.%02d\n", + (val >> 12) & 0xf, (val >> 8) & 0xf, val & 0xf); + + val = le16_to_cpu(hdr->fw_ver); + dev_dbg(dev->mt76.dev, + "Firmware Version: %d.%d.%02d Build: %x Build time: %.16s\n", + (val >> 12) & 0xf, (val >> 8) & 0xf, val & 0xf, + le16_to_cpu(hdr->build_ver), hdr->build_time); + + if (is_combo_chip && !mt76_poll(dev, MT_MCU_SEMAPHORE_00, 1, 1, 600)) { + dev_err(dev->mt76.dev, + "Could not get hardware semaphore for loading fw\n"); + err = -ETIMEDOUT; + goto out; + } + + /* upload ILM. */ + mt76_wr(dev, MT_MCU_PCIE_REMAP_BASE4, 0); + ilm_len = le32_to_cpu(hdr->ilm_len); + if (is_combo_chip) { + ilm_len -= MT_MCU_IVB_SIZE; + offset = MT_MCU_IVB_SIZE; + } + dev_dbg(dev->mt76.dev, "loading FW - ILM %u\n", ilm_len); + mt76_wr_copy(dev, MT_MCU_ILM_ADDR + offset, fw_payload + offset, + ilm_len); + + /* upload IVB. */ + if (is_combo_chip) { + dev_dbg(dev->mt76.dev, "loading FW - IVB %u\n", + MT_MCU_IVB_SIZE); + mt76_wr_copy(dev, MT_MCU_IVB_ADDR, fw_payload, MT_MCU_IVB_SIZE); + } + + /* upload DLM. */ + mt76_wr(dev, MT_MCU_PCIE_REMAP_BASE4, MT_MCU_DLM_OFFSET); + dlm_len = le32_to_cpu(hdr->dlm_len); + dev_dbg(dev->mt76.dev, "loading FW - DLM %u\n", dlm_len); + mt76_wr_copy(dev, MT_MCU_ILM_ADDR, + fw_payload + le32_to_cpu(hdr->ilm_len), dlm_len); + + /* trigger firmware */ + mt76_wr(dev, MT_MCU_PCIE_REMAP_BASE4, 0); + if (is_combo_chip) + mt76_wr(dev, MT_MCU_INT_LEVEL, 0x3); + else + mt76_wr(dev, MT_MCU_RESET_CTL, 0x300); + + if (!mt76_poll_msec(dev, MT_MCU_COM_REG0, 1, 1, 1000)) { + dev_err(dev->mt76.dev, "Firmware failed to start\n"); + err = -ETIMEDOUT; + goto out; + } + + mt76x02_set_ethtool_fwver(dev, hdr); + dev_dbg(dev->mt76.dev, "Firmware running!\n"); + +out: + if (is_combo_chip) + mt76_wr(dev, MT_MCU_SEMAPHORE_00, 0x1); + release_firmware(fw); + + return err; +} + +int mt76x0e_mcu_init(struct mt76x02_dev *dev) +{ + static const struct mt76_mcu_ops mt76x0e_mcu_ops = { + .mcu_send_msg = mt76x02_mcu_msg_send, + }; + int err; + + dev->mt76.mcu_ops = &mt76x0e_mcu_ops; + + err = mt76x0e_load_firmware(dev); + if (err < 0) + return err; + + set_bit(MT76_STATE_MCU_RUNNING, &dev->mt76.state); + + return 0; +} |