Commit f16f700d authored by Lorenzo Bianconi's avatar Lorenzo Bianconi Committed by Felix Fietkau
Browse files

mt76x0: usb: move mcu code in usb_mcu.c 



Move usb mcu code in a dedicated source file in order to remove
usb dependency from generic source files and improve code
maintainability

Signed-off-by: default avatarLorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: default avatarFelix Fietkau <nbd@nbd.name>
parent 56babfd9

drivers/net/wireless/mediatek/mt76/mt76x0/Makefile

+1 −1
Original line number Diff line number Diff line
@@ -5,7 +5,7 @@ obj-$(CONFIG_MT76x0_COMMON) += mt76x0-common.o 
mt76x0-common-y := \

	init.o main.o trace.o eeprom.o phy.o \

	mac.o debugfs.o tx.o

mt76x0u-y := usb.o

mt76x0u-y := usb.o usb_mcu.o

mt76x0e-y := pci.o pci_mcu.o



# ccflags-y := -DDEBUG

drivers/net/wireless/mediatek/mt76/mt76x0/mcu.h

+1 −0
Original line number Diff line number Diff line
@@ -42,6 +42,7 @@ enum mcu_calibrate { 
};



int mt76x0e_mcu_init(struct mt76x0_dev *dev);

int mt76x0u_mcu_init(struct mt76x0_dev *dev);

static inline int mt76x0_firmware_running(struct mt76x0_dev *dev)

{

	return mt76_rr(dev, MT_MCU_COM_REG0) == 1;

drivers/net/wireless/mediatek/mt76/mt76x0/usb.c

+0 −157
Original line number Diff line number Diff line
@@ -13,7 +13,6 @@ 


#include <linux/kernel.h>

#include <linux/module.h>

#include <linux/firmware.h>

#include <linux/usb.h>



#include "mt76x0.h"
@@ -22,8 +21,6 @@ 
#include "../mt76x02_util.h"

#include "../mt76x02_usb.h"



#define MT7610U_FIRMWARE		"mediatek/mt7610u.bin"



static struct usb_device_id mt76x0_device_table[] = {

	{ USB_DEVICE(0x148F, 0x7610) },	/* MT7610U */

	{ USB_DEVICE(0x13B1, 0x003E) },	/* Linksys AE6000 */
@@ -52,159 +49,6 @@ static struct usb_device_id mt76x0_device_table[] = { 
	{ 0, }

};



#define MCU_FW_URB_MAX_PAYLOAD		0x38f8

#define MCU_FW_URB_SIZE			(MCU_FW_URB_MAX_PAYLOAD + 12)



static int

mt76x0u_upload_firmware(struct mt76x0_dev *dev,

			const struct mt76x02_fw_header *hdr)

{

	u8 *fw_payload = (u8 *)(hdr + 1);

	u32 ilm_len, dlm_len;

	void *ivb;

	int err;



	ivb = kmemdup(fw_payload, MT_MCU_IVB_SIZE, GFP_KERNEL);

	if (!ivb)

		return -ENOMEM;



	ilm_len = le32_to_cpu(hdr->ilm_len) - MT_MCU_IVB_SIZE;

	dev_dbg(dev->mt76.dev, "loading FW - ILM %u + IVB %u\n",

		ilm_len, MT_MCU_IVB_SIZE);

	err = mt76x02u_mcu_fw_send_data(&dev->mt76,

					fw_payload + MT_MCU_IVB_SIZE,

					ilm_len, MCU_FW_URB_MAX_PAYLOAD,

					MT_MCU_IVB_SIZE);

	if (err)

		goto out;



	dlm_len = le32_to_cpu(hdr->dlm_len);

	dev_dbg(dev->mt76.dev, "loading FW - DLM %u\n", dlm_len);

	err = mt76x02u_mcu_fw_send_data(&dev->mt76,

					fw_payload + le32_to_cpu(hdr->ilm_len),

					dlm_len, MCU_FW_URB_MAX_PAYLOAD,

					MT_MCU_DLM_OFFSET);

	if (err)

		goto out;



	err = mt76u_vendor_request(&dev->mt76, MT_VEND_DEV_MODE,

				   USB_DIR_OUT | USB_TYPE_VENDOR,

				   0x12, 0, ivb, MT_MCU_IVB_SIZE);

	if (err < 0)

		goto out;



	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;

	}



	dev_dbg(dev->mt76.dev, "Firmware running!\n");



out:

	kfree(ivb);



	return err;

}



static int mt76x0u_load_firmware(struct mt76x0_dev *dev)

{

	const struct firmware *fw;

	const struct mt76x02_fw_header *hdr;

	int len, ret;

	u32 val;



	mt76_wr(dev, MT_USB_DMA_CFG, (MT_USB_DMA_CFG_RX_BULK_EN |

				      MT_USB_DMA_CFG_TX_BULK_EN));



	if (mt76x0_firmware_running(dev))

		return 0;



	ret = request_firmware(&fw, MT7610U_FIRMWARE, dev->mt76.dev);

	if (ret)

		return ret;



	if (!fw || !fw->data || fw->size < sizeof(*hdr))

		goto err_inv_fw;



	hdr = (const struct mt76x02_fw_header *)fw->data;



	if (le32_to_cpu(hdr->ilm_len) <= MT_MCU_IVB_SIZE)

		goto err_inv_fw;



	len = sizeof(*hdr);

	len += le32_to_cpu(hdr->ilm_len);

	len += le32_to_cpu(hdr->dlm_len);



	if (fw->size != len)

		goto err_inv_fw;



	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);



	len = le32_to_cpu(hdr->ilm_len);



	mt76_wr(dev, 0x1004, 0x2c);



	mt76_set(dev, MT_USB_DMA_CFG, (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));

	mt76x02u_mcu_fw_reset(&dev->mt76);

	msleep(5);

/*

	mt76x0_rmw(dev, MT_PBF_CFG, 0, (MT_PBF_CFG_TX0Q_EN |

					 MT_PBF_CFG_TX1Q_EN |

					 MT_PBF_CFG_TX2Q_EN |

					 MT_PBF_CFG_TX3Q_EN));

*/



	mt76_wr(dev, MT_FCE_PSE_CTRL, 1);



	/* 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, 1);

	/* FCE pdma enable */

	mt76_wr(dev, MT_FCE_PDMA_GLOBAL_CONF, 0x44);

	/* FCE skip_fs_en */

	mt76_wr(dev, MT_FCE_SKIP_FS, 3);



	val = mt76_rr(dev, MT_USB_DMA_CFG);

	val |= MT_USB_DMA_CFG_UDMA_TX_WL_DROP;

	mt76_wr(dev, MT_USB_DMA_CFG, val);

	val &= ~MT_USB_DMA_CFG_UDMA_TX_WL_DROP;

	mt76_wr(dev, MT_USB_DMA_CFG, val);



	ret = mt76x0u_upload_firmware(dev, hdr);

	mt76x02_set_ethtool_fwver(&dev->mt76, hdr);

	release_firmware(fw);



	mt76_wr(dev, MT_FCE_PSE_CTRL, 1);



	return ret;



err_inv_fw:

	dev_err(dev->mt76.dev, "Invalid firmware image\n");

	release_firmware(fw);

	return -ENOENT;

}



static int mt76x0u_mcu_init(struct mt76x0_dev *dev)

{

	int ret;



	ret = mt76x0u_load_firmware(dev);

	if (ret < 0)

		return ret;



	set_bit(MT76_STATE_MCU_RUNNING, &dev->mt76.state);



	return 0;

}



static int mt76x0u_probe(struct usb_interface *usb_intf,

			 const struct usb_device_id *id)

{
@@ -351,7 +195,6 @@ err: 
}



MODULE_DEVICE_TABLE(usb, mt76x0_device_table);

MODULE_FIRMWARE(MT7610U_FIRMWARE);

MODULE_LICENSE("GPL");



static struct usb_driver mt76x0_driver = {

drivers/net/wireless/mediatek/mt76/mt76x0/usb_mcu.c

0 → 100644
+176 −0
Original line number Diff line number Diff line 
/*

 * 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/kernel.h>

#include <linux/firmware.h>



#include "mt76x0.h"

#include "mcu.h"

#include "../mt76x02_usb.h"



#define MCU_FW_URB_MAX_PAYLOAD		0x38f8

#define MCU_FW_URB_SIZE			(MCU_FW_URB_MAX_PAYLOAD + 12)

#define MT7610U_FIRMWARE		"mediatek/mt7610u.bin"



static int

mt76x0u_upload_firmware(struct mt76x0_dev *dev,

			const struct mt76x02_fw_header *hdr)

{

	u8 *fw_payload = (u8 *)(hdr + 1);

	u32 ilm_len, dlm_len;

	void *ivb;

	int err;



	ivb = kmemdup(fw_payload, MT_MCU_IVB_SIZE, GFP_KERNEL);

	if (!ivb)

		return -ENOMEM;



	ilm_len = le32_to_cpu(hdr->ilm_len) - MT_MCU_IVB_SIZE;

	dev_dbg(dev->mt76.dev, "loading FW - ILM %u + IVB %u\n",

		ilm_len, MT_MCU_IVB_SIZE);

	err = mt76x02u_mcu_fw_send_data(&dev->mt76,

					fw_payload + MT_MCU_IVB_SIZE,

					ilm_len, MCU_FW_URB_MAX_PAYLOAD,

					MT_MCU_IVB_SIZE);

	if (err)

		goto out;



	dlm_len = le32_to_cpu(hdr->dlm_len);

	dev_dbg(dev->mt76.dev, "loading FW - DLM %u\n", dlm_len);

	err = mt76x02u_mcu_fw_send_data(&dev->mt76,

					fw_payload + le32_to_cpu(hdr->ilm_len),

					dlm_len, MCU_FW_URB_MAX_PAYLOAD,

					MT_MCU_DLM_OFFSET);

	if (err)

		goto out;



	err = mt76u_vendor_request(&dev->mt76, MT_VEND_DEV_MODE,

				   USB_DIR_OUT | USB_TYPE_VENDOR,

				   0x12, 0, ivb, MT_MCU_IVB_SIZE);

	if (err < 0)

		goto out;



	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;

	}



	dev_dbg(dev->mt76.dev, "Firmware running!\n");



out:

	kfree(ivb);



	return err;

}



static int mt76x0u_load_firmware(struct mt76x0_dev *dev)

{

	const struct firmware *fw;

	const struct mt76x02_fw_header *hdr;

	int len, ret;

	u32 val;



	mt76_wr(dev, MT_USB_DMA_CFG, (MT_USB_DMA_CFG_RX_BULK_EN |

				      MT_USB_DMA_CFG_TX_BULK_EN));



	if (mt76x0_firmware_running(dev))

		return 0;



	ret = request_firmware(&fw, MT7610U_FIRMWARE, dev->mt76.dev);

	if (ret)

		return ret;



	if (!fw || !fw->data || fw->size < sizeof(*hdr))

		goto err_inv_fw;



	hdr = (const struct mt76x02_fw_header *)fw->data;



	if (le32_to_cpu(hdr->ilm_len) <= MT_MCU_IVB_SIZE)

		goto err_inv_fw;



	len = sizeof(*hdr);

	len += le32_to_cpu(hdr->ilm_len);

	len += le32_to_cpu(hdr->dlm_len);



	if (fw->size != len)

		goto err_inv_fw;



	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);



	len = le32_to_cpu(hdr->ilm_len);



	mt76_wr(dev, 0x1004, 0x2c);



	mt76_set(dev, MT_USB_DMA_CFG,

		 (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));

	mt76x02u_mcu_fw_reset(&dev->mt76);

	usleep_range(5000, 6000);

/*

	mt76x0_rmw(dev, MT_PBF_CFG, 0, (MT_PBF_CFG_TX0Q_EN |

					 MT_PBF_CFG_TX1Q_EN |

					 MT_PBF_CFG_TX2Q_EN |

					 MT_PBF_CFG_TX3Q_EN));

*/



	mt76_wr(dev, MT_FCE_PSE_CTRL, 1);



	/* 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, 1);

	/* FCE pdma enable */

	mt76_wr(dev, MT_FCE_PDMA_GLOBAL_CONF, 0x44);

	/* FCE skip_fs_en */

	mt76_wr(dev, MT_FCE_SKIP_FS, 3);



	val = mt76_rr(dev, MT_USB_DMA_CFG);

	val |= MT_USB_DMA_CFG_UDMA_TX_WL_DROP;

	mt76_wr(dev, MT_USB_DMA_CFG, val);

	val &= ~MT_USB_DMA_CFG_UDMA_TX_WL_DROP;

	mt76_wr(dev, MT_USB_DMA_CFG, val);



	ret = mt76x0u_upload_firmware(dev, hdr);

	release_firmware(fw);



	mt76_wr(dev, MT_FCE_PSE_CTRL, 1);



	return ret;



err_inv_fw:

	dev_err(dev->mt76.dev, "Invalid firmware image\n");

	release_firmware(fw);

	return -ENOENT;

}



int mt76x0u_mcu_init(struct mt76x0_dev *dev)

{

	int ret;



	ret = mt76x0u_load_firmware(dev);

	if (ret < 0)

		return ret;



	set_bit(MT76_STATE_MCU_RUNNING, &dev->mt76.state);



	return 0;

}



MODULE_FIRMWARE(MT7610U_FIRMWARE);

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