kernel_samsung_a34x-permissive/drivers/net/wireless/mediatek/mt76/mt76x2u_mcu.c

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/*
* Copyright (C) 2018 Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <linux/firmware.h>
#include "mt76x2u.h"
#include "mt76x2_eeprom.h"
#define MT_CMD_HDR_LEN 4
#define MT_INBAND_PACKET_MAX_LEN 192
#define MT_MCU_MEMMAP_WLAN 0x410000
#define MCU_FW_URB_MAX_PAYLOAD 0x3900
#define MCU_ROM_PATCH_MAX_PAYLOAD 2048
#define MT76U_MCU_ILM_OFFSET 0x80000
#define MT76U_MCU_DLM_OFFSET 0x110000
#define MT76U_MCU_ROM_PATCH_OFFSET 0x90000
static int
mt76x2u_mcu_function_select(struct mt76x2_dev *dev, enum mcu_function func,
u32 val)
{
struct {
__le32 id;
__le32 value;
} __packed __aligned(4) msg = {
.id = cpu_to_le32(func),
.value = cpu_to_le32(val),
};
struct sk_buff *skb;
skb = mt76u_mcu_msg_alloc(&msg, sizeof(msg));
if (!skb)
return -ENOMEM;
return mt76u_mcu_send_msg(&dev->mt76, skb, CMD_FUN_SET_OP,
func != Q_SELECT);
}
int mt76x2u_mcu_set_radio_state(struct mt76x2_dev *dev, bool val)
{
struct {
__le32 mode;
__le32 level;
} __packed __aligned(4) msg = {
.mode = cpu_to_le32(val ? RADIO_ON : RADIO_OFF),
.level = cpu_to_le32(0),
};
struct sk_buff *skb;
skb = mt76u_mcu_msg_alloc(&msg, sizeof(msg));
if (!skb)
return -ENOMEM;
return mt76u_mcu_send_msg(&dev->mt76, skb, CMD_POWER_SAVING_OP,
false);
}
int mt76x2u_mcu_load_cr(struct mt76x2_dev *dev, u8 type, u8 temp_level,
u8 channel)
{
struct {
u8 cr_mode;
u8 temp;
u8 ch;
u8 _pad0;
__le32 cfg;
} __packed __aligned(4) msg = {
.cr_mode = type,
.temp = temp_level,
.ch = channel,
};
struct sk_buff *skb;
u32 val;
val = BIT(31);
val |= (mt76x2_eeprom_get(dev, MT_EE_NIC_CONF_0) >> 8) & 0x00ff;
val |= (mt76x2_eeprom_get(dev, MT_EE_NIC_CONF_1) << 8) & 0xff00;
msg.cfg = cpu_to_le32(val);
/* first set the channel without the extension channel info */
skb = mt76u_mcu_msg_alloc(&msg, sizeof(msg));
if (!skb)
return -ENOMEM;
return mt76u_mcu_send_msg(&dev->mt76, skb, CMD_LOAD_CR, true);
}
int mt76x2u_mcu_set_channel(struct mt76x2_dev *dev, u8 channel, u8 bw,
u8 bw_index, bool scan)
{
struct {
u8 idx;
u8 scan;
u8 bw;
u8 _pad0;
__le16 chainmask;
u8 ext_chan;
u8 _pad1;
} __packed __aligned(4) msg = {
.idx = channel,
.scan = scan,
.bw = bw,
.chainmask = cpu_to_le16(dev->chainmask),
};
struct sk_buff *skb;
/* first set the channel without the extension channel info */
skb = mt76u_mcu_msg_alloc(&msg, sizeof(msg));
if (!skb)
return -ENOMEM;
mt76u_mcu_send_msg(&dev->mt76, skb, CMD_SWITCH_CHANNEL_OP, true);
usleep_range(5000, 10000);
msg.ext_chan = 0xe0 + bw_index;
skb = mt76u_mcu_msg_alloc(&msg, sizeof(msg));
if (!skb)
return -ENOMEM;
return mt76u_mcu_send_msg(&dev->mt76, skb, CMD_SWITCH_CHANNEL_OP, true);
}
int mt76x2u_mcu_calibrate(struct mt76x2_dev *dev, enum mcu_calibration type,
u32 val)
{
struct {
__le32 id;
__le32 value;
} __packed __aligned(4) msg = {
.id = cpu_to_le32(type),
.value = cpu_to_le32(val),
};
struct sk_buff *skb;
skb = mt76u_mcu_msg_alloc(&msg, sizeof(msg));
if (!skb)
return -ENOMEM;
return mt76u_mcu_send_msg(&dev->mt76, skb, CMD_CALIBRATION_OP, true);
}
int mt76x2u_mcu_init_gain(struct mt76x2_dev *dev, u8 channel, u32 gain,
bool force)
{
struct {
__le32 channel;
__le32 gain_val;
} __packed __aligned(4) msg = {
.channel = cpu_to_le32(channel),
.gain_val = cpu_to_le32(gain),
};
struct sk_buff *skb;
if (force)
msg.channel |= cpu_to_le32(BIT(31));
skb = mt76u_mcu_msg_alloc(&msg, sizeof(msg));
if (!skb)
return -ENOMEM;
return mt76u_mcu_send_msg(&dev->mt76, skb, CMD_INIT_GAIN_OP, true);
}
int mt76x2u_mcu_set_dynamic_vga(struct mt76x2_dev *dev, u8 channel, bool ap,
bool ext, int rssi, u32 false_cca)
{
struct {
__le32 channel;
__le32 rssi_val;
__le32 false_cca_val;
} __packed __aligned(4) msg = {
.rssi_val = cpu_to_le32(rssi),
.false_cca_val = cpu_to_le32(false_cca),
};
struct sk_buff *skb;
u32 val = channel;
if (ap)
val |= BIT(31);
if (ext)
val |= BIT(30);
msg.channel = cpu_to_le32(val);
skb = mt76u_mcu_msg_alloc(&msg, sizeof(msg));
if (!skb)
return -ENOMEM;
return mt76u_mcu_send_msg(&dev->mt76, skb, CMD_DYNC_VGA_OP, true);
}
int mt76x2u_mcu_tssi_comp(struct mt76x2_dev *dev,
struct mt76x2_tssi_comp *tssi_data)
{
struct {
__le32 id;
struct mt76x2_tssi_comp data;
} __packed __aligned(4) msg = {
.id = cpu_to_le32(MCU_CAL_TSSI_COMP),
.data = *tssi_data,
};
struct sk_buff *skb;
skb = mt76u_mcu_msg_alloc(&msg, sizeof(msg));
if (!skb)
return -ENOMEM;
return mt76u_mcu_send_msg(&dev->mt76, skb, CMD_CALIBRATION_OP, true);
}
static void mt76x2u_mcu_load_ivb(struct mt76x2_dev *dev)
{
mt76u_vendor_request(&dev->mt76, MT_VEND_DEV_MODE,
USB_DIR_OUT | USB_TYPE_VENDOR,
0x12, 0, NULL, 0);
}
static void mt76x2u_mcu_enable_patch(struct mt76x2_dev *dev)
{
struct mt76_usb *usb = &dev->mt76.usb;
const u8 data[] = {
0x6f, 0xfc, 0x08, 0x01,
0x20, 0x04, 0x00, 0x00,
0x00, 0x09, 0x00,
};
memcpy(usb->data, data, sizeof(data));
mt76u_vendor_request(&dev->mt76, MT_VEND_DEV_MODE,
USB_DIR_OUT | USB_TYPE_CLASS,
0x12, 0, usb->data, sizeof(data));
}
static void mt76x2u_mcu_reset_wmt(struct mt76x2_dev *dev)
{
struct mt76_usb *usb = &dev->mt76.usb;
u8 data[] = {
0x6f, 0xfc, 0x05, 0x01,
0x07, 0x01, 0x00, 0x04
};
memcpy(usb->data, data, sizeof(data));
mt76u_vendor_request(&dev->mt76, MT_VEND_DEV_MODE,
USB_DIR_OUT | USB_TYPE_CLASS,
0x12, 0, usb->data, sizeof(data));
}
static int mt76x2u_mcu_load_rom_patch(struct mt76x2_dev *dev)
{
bool rom_protect = !is_mt7612(dev);
struct mt76x2_patch_header *hdr;
u32 val, patch_mask, patch_reg;
const struct firmware *fw;
int err;
if (rom_protect &&
!mt76_poll_msec(dev, MT_MCU_SEMAPHORE_03, 1, 1, 600)) {
dev_err(dev->mt76.dev,
"could not get hardware semaphore for ROM PATCH\n");
return -ETIMEDOUT;
}
if (mt76xx_rev(dev) >= MT76XX_REV_E3) {
patch_mask = BIT(0);
patch_reg = MT_MCU_CLOCK_CTL;
} else {
patch_mask = BIT(1);
patch_reg = MT_MCU_COM_REG0;
}
if (rom_protect && (mt76_rr(dev, patch_reg) & patch_mask)) {
dev_info(dev->mt76.dev, "ROM patch already applied\n");
return 0;
}
err = request_firmware(&fw, MT7662U_ROM_PATCH, dev->mt76.dev);
if (err < 0)
return err;
if (!fw || !fw->data || fw->size <= sizeof(*hdr)) {
dev_err(dev->mt76.dev, "failed to load firmware\n");
err = -EIO;
goto out;
}
hdr = (struct mt76x2_patch_header *)fw->data;
dev_info(dev->mt76.dev, "ROM patch build: %.15s\n", hdr->build_time);
/* enable USB_DMA_CFG */
val = MT_USB_DMA_CFG_RX_BULK_EN |
MT_USB_DMA_CFG_TX_BULK_EN |
FIELD_PREP(MT_USB_DMA_CFG_RX_BULK_AGG_TOUT, 0x20);
mt76_wr(dev, MT_VEND_ADDR(CFG, MT_USB_U3DMA_CFG), val);
/* vendor reset */
mt76u_mcu_fw_reset(&dev->mt76);
usleep_range(5000, 10000);
/* enable FCE to send in-band cmd */
mt76_wr(dev, MT_FCE_PSE_CTRL, 0x1);
/* FCE tx_fs_base_ptr */
mt76_wr(dev, MT_TX_CPU_FROM_FCE_BASE_PTR, 0x400230);
/* FCE tx_fs_max_cnt */
mt76_wr(dev, MT_TX_CPU_FROM_FCE_MAX_COUNT, 0x1);
/* FCE pdma enable */
mt76_wr(dev, MT_FCE_PDMA_GLOBAL_CONF, 0x44);
/* FCE skip_fs_en */
mt76_wr(dev, MT_FCE_SKIP_FS, 0x3);
err = mt76u_mcu_fw_send_data(&dev->mt76, fw->data + sizeof(*hdr),
fw->size - sizeof(*hdr),
MCU_ROM_PATCH_MAX_PAYLOAD,
MT76U_MCU_ROM_PATCH_OFFSET);
if (err < 0) {
err = -EIO;
goto out;
}
mt76x2u_mcu_enable_patch(dev);
mt76x2u_mcu_reset_wmt(dev);
mdelay(20);
if (!mt76_poll_msec(dev, patch_reg, patch_mask, patch_mask, 100)) {
dev_err(dev->mt76.dev, "failed to load ROM patch\n");
err = -ETIMEDOUT;
}
out:
if (rom_protect)
mt76_wr(dev, MT_MCU_SEMAPHORE_03, 1);
release_firmware(fw);
return err;
}
static int mt76x2u_mcu_load_firmware(struct mt76x2_dev *dev)
{
u32 val, dlm_offset = MT76U_MCU_DLM_OFFSET;
const struct mt76x2_fw_header *hdr;
int err, len, ilm_len, dlm_len;
const struct firmware *fw;
err = request_firmware(&fw, MT7662U_FIRMWARE, dev->mt76.dev);
if (err < 0)
return err;
if (!fw || !fw->data || fw->size < sizeof(*hdr)) {
err = -EINVAL;
goto out;
}
hdr = (const struct mt76x2_fw_header *)fw->data;
ilm_len = le32_to_cpu(hdr->ilm_len);
dlm_len = le32_to_cpu(hdr->dlm_len);
len = sizeof(*hdr) + ilm_len + dlm_len;
if (fw->size != len) {
err = -EINVAL;
goto out;
}
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->build_ver);
dev_info(dev->mt76.dev, "Build: %x\n", val);
dev_info(dev->mt76.dev, "Build Time: %.16s\n", hdr->build_time);
/* vendor reset */
mt76u_mcu_fw_reset(&dev->mt76);
usleep_range(5000, 10000);
/* enable USB_DMA_CFG */
val = MT_USB_DMA_CFG_RX_BULK_EN |
MT_USB_DMA_CFG_TX_BULK_EN |
FIELD_PREP(MT_USB_DMA_CFG_RX_BULK_AGG_TOUT, 0x20);
mt76_wr(dev, MT_VEND_ADDR(CFG, MT_USB_U3DMA_CFG), val);
/* enable FCE to send in-band cmd */
mt76_wr(dev, MT_FCE_PSE_CTRL, 0x1);
/* FCE tx_fs_base_ptr */
mt76_wr(dev, MT_TX_CPU_FROM_FCE_BASE_PTR, 0x400230);
/* FCE tx_fs_max_cnt */
mt76_wr(dev, MT_TX_CPU_FROM_FCE_MAX_COUNT, 0x1);
/* FCE pdma enable */
mt76_wr(dev, MT_FCE_PDMA_GLOBAL_CONF, 0x44);
/* FCE skip_fs_en */
mt76_wr(dev, MT_FCE_SKIP_FS, 0x3);
/* load ILM */
err = mt76u_mcu_fw_send_data(&dev->mt76, fw->data + sizeof(*hdr),
ilm_len, MCU_FW_URB_MAX_PAYLOAD,
MT76U_MCU_ILM_OFFSET);
if (err < 0) {
err = -EIO;
goto out;
}
/* load DLM */
if (mt76xx_rev(dev) >= MT76XX_REV_E3)
dlm_offset += 0x800;
err = mt76u_mcu_fw_send_data(&dev->mt76,
fw->data + sizeof(*hdr) + ilm_len,
dlm_len, MCU_FW_URB_MAX_PAYLOAD,
dlm_offset);
if (err < 0) {
err = -EIO;
goto out;
}
mt76x2u_mcu_load_ivb(dev);
if (!mt76_poll_msec(dev, MT_MCU_COM_REG0, 1, 1, 100)) {
dev_err(dev->mt76.dev, "firmware failed to start\n");
err = -ETIMEDOUT;
goto out;
}
mt76_set(dev, MT_MCU_COM_REG0, BIT(1));
/* enable FCE to send in-band cmd */
mt76_wr(dev, MT_FCE_PSE_CTRL, 0x1);
dev_dbg(dev->mt76.dev, "firmware running\n");
out:
release_firmware(fw);
return err;
}
int mt76x2u_mcu_fw_init(struct mt76x2_dev *dev)
{
int err;
err = mt76x2u_mcu_load_rom_patch(dev);
if (err < 0)
return err;
return mt76x2u_mcu_load_firmware(dev);
}
int mt76x2u_mcu_init(struct mt76x2_dev *dev)
{
int err;
err = mt76x2u_mcu_function_select(dev, Q_SELECT, 1);
if (err < 0)
return err;
return mt76x2u_mcu_set_radio_state(dev, true);
}
void mt76x2u_mcu_deinit(struct mt76x2_dev *dev)
{
struct mt76_usb *usb = &dev->mt76.usb;
usb_kill_urb(usb->mcu.res.urb);
mt76u_buf_free(&usb->mcu.res);
}