[linux-block.git] / drivers / net / wireless / mediatek / mt76 / mt7925 / usb.c

// SPDX-License-Identifier: ISC
/* Copyright (C) 2023 MediaTek Inc. */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/usb.h>

#include "mt7925.h"
#include "mcu.h"
#include "mac.h"

static const struct usb_device_id mt7925u_device_table[] = {
	{ USB_DEVICE_AND_INTERFACE_INFO(0x0e8d, 0x7925, 0xff, 0xff, 0xff),
		.driver_info = (kernel_ulong_t)MT7925_FIRMWARE_WM },
	{ },
};

static int
mt7925u_mcu_send_message(struct mt76_dev *mdev, struct sk_buff *skb,
			 int cmd, int *seq)
{
	struct mt792x_dev *dev = container_of(mdev, struct mt792x_dev, mt76);
	u32 pad, ep;
	int ret;

	ret = mt7925_mcu_fill_message(mdev, skb, cmd, seq);
	if (ret)
		return ret;

	mdev->mcu.timeout = 3 * HZ;

	if (cmd != MCU_CMD(FW_SCATTER))
		ep = MT_EP_OUT_INBAND_CMD;
	else
		ep = MT_EP_OUT_AC_BE;

	mt792x_skb_add_usb_sdio_hdr(dev, skb, 0);
	pad = round_up(skb->len, 4) + 4 - skb->len;
	__skb_put_zero(skb, pad);

	ret = mt76u_bulk_msg(&dev->mt76, skb->data, skb->len, NULL,
			     1000, ep);
	dev_kfree_skb(skb);

	return ret;
}

static int mt7925u_mcu_init(struct mt792x_dev *dev)
{
	static const struct mt76_mcu_ops mcu_ops = {
		.headroom = MT_SDIO_HDR_SIZE +
			    sizeof(struct mt76_connac2_mcu_txd),
		.tailroom = MT_USB_TAIL_SIZE,
		.mcu_skb_send_msg = mt7925u_mcu_send_message,
		.mcu_parse_response = mt7925_mcu_parse_response,
	};
	int ret;

	dev->mt76.mcu_ops = &mcu_ops;

	mt76_set(dev, MT_UDMA_TX_QSEL, MT_FW_DL_EN);
	ret = mt7925_run_firmware(dev);
	if (ret)
		return ret;

	set_bit(MT76_STATE_MCU_RUNNING, &dev->mphy.state);
	mt76_clear(dev, MT_UDMA_TX_QSEL, MT_FW_DL_EN);

	return 0;
}

static int mt7925u_mac_reset(struct mt792x_dev *dev)
{
	int err;

	mt76_txq_schedule_all(&dev->mphy);
	mt76_worker_disable(&dev->mt76.tx_worker);

	set_bit(MT76_RESET, &dev->mphy.state);
	set_bit(MT76_MCU_RESET, &dev->mphy.state);

	wake_up(&dev->mt76.mcu.wait);
	skb_queue_purge(&dev->mt76.mcu.res_q);

	mt76u_stop_rx(&dev->mt76);
	mt76u_stop_tx(&dev->mt76);

	mt792xu_wfsys_reset(dev);

	clear_bit(MT76_MCU_RESET, &dev->mphy.state);
	err = mt76u_resume_rx(&dev->mt76);
	if (err)
		goto out;

	err = mt792xu_mcu_power_on(dev);
	if (err)
		goto out;

	err = mt792xu_dma_init(dev, false);
	if (err)
		goto out;

	mt76_wr(dev, MT_SWDEF_MODE, MT_SWDEF_NORMAL_MODE);
	mt76_set(dev, MT_UDMA_TX_QSEL, MT_FW_DL_EN);

	err = mt7925_run_firmware(dev);
	if (err)
		goto out;

	mt76_clear(dev, MT_UDMA_TX_QSEL, MT_FW_DL_EN);

	err = mt7925_mcu_set_eeprom(dev);
	if (err)
		goto out;

	err = mt7925_mac_init(dev);
	if (err)
		goto out;

	err = __mt7925_start(&dev->phy);
out:
	clear_bit(MT76_RESET, &dev->mphy.state);

	mt76_worker_enable(&dev->mt76.tx_worker);

	return err;
}

static int mt7925u_probe(struct usb_interface *usb_intf,
			 const struct usb_device_id *id)
{
	static const struct mt76_driver_ops drv_ops = {
		.txwi_size = MT_SDIO_TXD_SIZE,
		.drv_flags = MT_DRV_RX_DMA_HDR | MT_DRV_HW_MGMT_TXQ |
			     MT_DRV_AMSDU_OFFLOAD,
		.survey_flags = SURVEY_INFO_TIME_TX |
				SURVEY_INFO_TIME_RX |
				SURVEY_INFO_TIME_BSS_RX,
		.tx_prepare_skb = mt7925_usb_sdio_tx_prepare_skb,
		.tx_complete_skb = mt7925_usb_sdio_tx_complete_skb,
		.tx_status_data = mt7925_usb_sdio_tx_status_data,
		.rx_skb = mt7925_queue_rx_skb,
		.rx_check = mt7925_rx_check,
		.sta_add = mt7925_mac_sta_add,
		.sta_assoc = mt7925_mac_sta_assoc,
		.sta_remove = mt7925_mac_sta_remove,
		.update_survey = mt792x_update_channel,
	};
	static const struct mt792x_hif_ops hif_ops = {
		.mcu_init = mt7925u_mcu_init,
		.init_reset = mt792xu_init_reset,
		.reset = mt7925u_mac_reset,
	};
	static struct mt76_bus_ops bus_ops = {
		.rr = mt792xu_rr,
		.wr = mt792xu_wr,
		.rmw = mt792xu_rmw,
		.read_copy = mt76u_read_copy,
		.write_copy = mt792xu_copy,
		.type = MT76_BUS_USB,
	};
	struct usb_device *udev = interface_to_usbdev(usb_intf);
	struct ieee80211_ops *ops;
	struct ieee80211_hw *hw;
	struct mt792x_dev *dev;
	struct mt76_dev *mdev;
	u8 features;
	int ret;

	ops = mt792x_get_mac80211_ops(&usb_intf->dev, &mt7925_ops,
				      (void *)id->driver_info, &features);
	if (!ops)
		return -ENOMEM;

	ops->stop = mt792xu_stop;

	mdev = mt76_alloc_device(&usb_intf->dev, sizeof(*dev), ops, &drv_ops);
	if (!mdev)
		return -ENOMEM;

	dev = container_of(mdev, struct mt792x_dev, mt76);
	dev->fw_features = features;
	dev->hif_ops = &hif_ops;

	udev = usb_get_dev(udev);
	usb_reset_device(udev);

	usb_set_intfdata(usb_intf, dev);

	ret = __mt76u_init(mdev, usb_intf, &bus_ops);
	if (ret < 0)
		goto error;

	mdev->rev = (mt76_rr(dev, MT_HW_CHIPID) << 16) |
		    (mt76_rr(dev, MT_HW_REV) & 0xff);
	dev_dbg(mdev->dev, "ASIC revision: %04x\n", mdev->rev);

	if (mt76_get_field(dev, MT_CONN_ON_MISC, MT_TOP_MISC2_FW_N9_RDY)) {
		ret = mt792xu_wfsys_reset(dev);
		if (ret)
			goto error;
	}

	ret = mt792xu_mcu_power_on(dev);
	if (ret)
		goto error;

	ret = mt76u_alloc_mcu_queue(&dev->mt76);
	if (ret)
		goto error;

	ret = mt76u_alloc_queues(&dev->mt76);
	if (ret)
		goto error;

	ret = mt792xu_dma_init(dev, false);
	if (ret)
		goto error;

	hw = mt76_hw(dev);
	/* check hw sg support in order to enable AMSDU */
	hw->max_tx_fragments = mdev->usb.sg_en ? MT_HW_TXP_MAX_BUF_NUM : 1;

	ret = mt7925_register_device(dev);
	if (ret)
		goto error;

	return 0;

error:
	mt76u_queues_deinit(&dev->mt76);

	usb_set_intfdata(usb_intf, NULL);
	usb_put_dev(interface_to_usbdev(usb_intf));

	mt76_free_device(&dev->mt76);

	return ret;
}

#ifdef CONFIG_PM
static int mt7925u_suspend(struct usb_interface *intf, pm_message_t state)
{
	struct mt792x_dev *dev = usb_get_intfdata(intf);
	struct mt76_connac_pm *pm = &dev->pm;
	int err;

	pm->suspended = true;
	flush_work(&dev->reset_work);

	err = mt76_connac_mcu_set_hif_suspend(&dev->mt76, true);
	if (err)
		goto failed;

	mt76u_stop_rx(&dev->mt76);
	mt76u_stop_tx(&dev->mt76);

	return 0;

failed:
	pm->suspended = false;

	if (err < 0)
		mt792x_reset(&dev->mt76);

	return err;
}

static int mt7925u_resume(struct usb_interface *intf)
{
	struct mt792x_dev *dev = usb_get_intfdata(intf);
	struct mt76_connac_pm *pm = &dev->pm;
	bool reinit = true;
	int err, i;

	for (i = 0; i < 10; i++) {
		u32 val = mt76_rr(dev, MT_WF_SW_DEF_CR_USB_MCU_EVENT);

		if (!(val & MT_WF_SW_SER_TRIGGER_SUSPEND)) {
			reinit = false;
			break;
		}
		if (val & MT_WF_SW_SER_DONE_SUSPEND) {
			mt76_wr(dev, MT_WF_SW_DEF_CR_USB_MCU_EVENT, 0);
			break;
		}

		msleep(20);
	}

	if (reinit || mt792x_dma_need_reinit(dev)) {
		err = mt792xu_dma_init(dev, true);
		if (err)
			goto failed;
	}

	err = mt76u_resume_rx(&dev->mt76);
	if (err < 0)
		goto failed;

	err = mt76_connac_mcu_set_hif_suspend(&dev->mt76, false);
failed:
	pm->suspended = false;

	if (err < 0)
		mt792x_reset(&dev->mt76);

	return err;
}
#endif /* CONFIG_PM */

MODULE_DEVICE_TABLE(usb, mt7925u_device_table);
MODULE_FIRMWARE(MT7925_FIRMWARE_WM);
MODULE_FIRMWARE(MT7925_ROM_PATCH);

static struct usb_driver mt7925u_driver = {
	.name		= KBUILD_MODNAME,
	.id_table	= mt7925u_device_table,
	.probe		= mt7925u_probe,
	.disconnect	= mt792xu_disconnect,
#ifdef CONFIG_PM
	.suspend	= mt7925u_suspend,
	.resume		= mt7925u_resume,
	.reset_resume	= mt7925u_resume,
#endif /* CONFIG_PM */
	.soft_unbind	= 1,
	.disable_hub_initiated_lpm = 1,
};
module_usb_driver(mt7925u_driver);

MODULE_AUTHOR("Lorenzo Bianconi <lorenzo@kernel.org>");
MODULE_DESCRIPTION("MediaTek MT7925U (USB) wireless driver");
MODULE_LICENSE("Dual BSD/GPL");
Commit	Line	Data
c948b5da DW	1	// SPDX-License-Identifier: ISC
	2	/* Copyright (C) 2023 MediaTek Inc. */
	3
	4	#include <linux/kernel.h>
	5	#include <linux/module.h>
	6	#include <linux/usb.h>
	7
	8	#include "mt7925.h"
	9	#include "mcu.h"
	10	#include "mac.h"
	11
	12	static const struct usb_device_id mt7925u_device_table[] = {
	13	{ USB_DEVICE_AND_INTERFACE_INFO(0x0e8d, 0x7925, 0xff, 0xff, 0xff),
	14	.driver_info = (kernel_ulong_t)MT7925_FIRMWARE_WM },
	15	{ },
	16	};
	17
	18	static int
	19	mt7925u_mcu_send_message(struct mt76_dev mdev, struct sk_buff skb,
	20	int cmd, int *seq)
	21	{
	22	struct mt792x_dev *dev = container_of(mdev, struct mt792x_dev, mt76);
	23	u32 pad, ep;
	24	int ret;
	25
	26	ret = mt7925_mcu_fill_message(mdev, skb, cmd, seq);
	27	if (ret)
	28	return ret;
	29
	30	mdev->mcu.timeout = 3 * HZ;
	31
	32	if (cmd != MCU_CMD(FW_SCATTER))
	33	ep = MT_EP_OUT_INBAND_CMD;
	34	else
	35	ep = MT_EP_OUT_AC_BE;
	36
4d2cb56a	37	mt792x_skb_add_usb_sdio_hdr(dev, skb, 0);
c948b5da DW	38	pad = round_up(skb->len, 4) + 4 - skb->len;
	39	__skb_put_zero(skb, pad);
	40
	41	ret = mt76u_bulk_msg(&dev->mt76, skb->data, skb->len, NULL,
	42	1000, ep);
	43	dev_kfree_skb(skb);
	44
	45	return ret;
	46	}
	47
	48	static int mt7925u_mcu_init(struct mt792x_dev *dev)
	49	{
	50	static const struct mt76_mcu_ops mcu_ops = {
	51	.headroom = MT_SDIO_HDR_SIZE +
	52	sizeof(struct mt76_connac2_mcu_txd),
	53	.tailroom = MT_USB_TAIL_SIZE,
	54	.mcu_skb_send_msg = mt7925u_mcu_send_message,
	55	.mcu_parse_response = mt7925_mcu_parse_response,
	56	};
	57	int ret;
	58
	59	dev->mt76.mcu_ops = &mcu_ops;
	60
	61	mt76_set(dev, MT_UDMA_TX_QSEL, MT_FW_DL_EN);
	62	ret = mt7925_run_firmware(dev);
	63	if (ret)
	64	return ret;
	65
	66	set_bit(MT76_STATE_MCU_RUNNING, &dev->mphy.state);
	67	mt76_clear(dev, MT_UDMA_TX_QSEL, MT_FW_DL_EN);
	68
	69	return 0;
	70	}
	71
c948b5da DW	72	static int mt7925u_mac_reset(struct mt792x_dev *dev)
	73	{
	74	int err;
	75
	76	mt76_txq_schedule_all(&dev->mphy);
	77	mt76_worker_disable(&dev->mt76.tx_worker);
	78
	79	set_bit(MT76_RESET, &dev->mphy.state);
	80	set_bit(MT76_MCU_RESET, &dev->mphy.state);
	81
	82	wake_up(&dev->mt76.mcu.wait);
	83	skb_queue_purge(&dev->mt76.mcu.res_q);
	84
	85	mt76u_stop_rx(&dev->mt76);
	86	mt76u_stop_tx(&dev->mt76);
	87
	88	mt792xu_wfsys_reset(dev);
	89
	90	clear_bit(MT76_MCU_RESET, &dev->mphy.state);
	91	err = mt76u_resume_rx(&dev->mt76);
	92	if (err)
	93	goto out;
	94
	95	err = mt792xu_mcu_power_on(dev);
	96	if (err)
	97	goto out;
	98
	99	err = mt792xu_dma_init(dev, false);
	100	if (err)
	101	goto out;
	102
	103	mt76_wr(dev, MT_SWDEF_MODE, MT_SWDEF_NORMAL_MODE);
	104	mt76_set(dev, MT_UDMA_TX_QSEL, MT_FW_DL_EN);
	105
	106	err = mt7925_run_firmware(dev);
	107	if (err)
	108	goto out;
	109
	110	mt76_clear(dev, MT_UDMA_TX_QSEL, MT_FW_DL_EN);
	111
	112	err = mt7925_mcu_set_eeprom(dev);
	113	if (err)
	114	goto out;
	115
	116	err = mt7925_mac_init(dev);
	117	if (err)
	118	goto out;
	119
	120	err = __mt7925_start(&dev->phy);
	121	out:
	122	clear_bit(MT76_RESET, &dev->mphy.state);
	123
	124	mt76_worker_enable(&dev->mt76.tx_worker);
	125
	126	return err;
	127	}
	128
	129	static int mt7925u_probe(struct usb_interface *usb_intf,
	130	const struct usb_device_id *id)
	131	{
	132	static const struct mt76_driver_ops drv_ops = {
	133	.txwi_size = MT_SDIO_TXD_SIZE,
	134	.drv_flags = MT_DRV_RX_DMA_HDR \| MT_DRV_HW_MGMT_TXQ \|
	135	MT_DRV_AMSDU_OFFLOAD,
136	.survey_flags = SURVEY_INFO_TIME_TX \|
137	SURVEY_INFO_TIME_RX \|
138	SURVEY_INFO_TIME_BSS_RX,
139	.tx_prepare_skb = mt7925_usb_sdio_tx_prepare_skb,
140	.tx_complete_skb = mt7925_usb_sdio_tx_complete_skb,
141	.tx_status_data = mt7925_usb_sdio_tx_status_data,
142	.rx_skb = mt7925_queue_rx_skb,
143	.rx_check = mt7925_rx_check,
144	.sta_add = mt7925_mac_sta_add,
145	.sta_assoc = mt7925_mac_sta_assoc,
146	.sta_remove = mt7925_mac_sta_remove,
147	.update_survey = mt792x_update_channel,
148	};
149	static const struct mt792x_hif_ops hif_ops = {
150	.mcu_init = mt7925u_mcu_init,
151	.init_reset = mt792xu_init_reset,
152	.reset = mt7925u_mac_reset,
153	};
154	static struct mt76_bus_ops bus_ops = {
155	.rr = mt792xu_rr,
156	.wr = mt792xu_wr,
157	.rmw = mt792xu_rmw,
158	.read_copy = mt76u_read_copy,
159	.write_copy = mt792xu_copy,
160	.type = MT76_BUS_USB,
161	};
162	struct usb_device *udev = interface_to_usbdev(usb_intf);
163	struct ieee80211_ops *ops;
164	struct ieee80211_hw *hw;
165	struct mt792x_dev *dev;
166	struct mt76_dev *mdev;
167	u8 features;
168	int ret;
169
170	ops = mt792x_get_mac80211_ops(&usb_intf->dev, &mt7925_ops,
171	(void *)id->driver_info, &features);
172	if (!ops)
173	return -ENOMEM;
174
5ab7d466	175	ops->stop = mt792xu_stop;
c948b5da DW	176
	177	mdev = mt76_alloc_device(&usb_intf->dev, sizeof(*dev), ops, &drv_ops);
	178	if (!mdev)
	179	return -ENOMEM;
	180
	181	dev = container_of(mdev, struct mt792x_dev, mt76);
	182	dev->fw_features = features;
	183	dev->hif_ops = &hif_ops;
	184
	185	udev = usb_get_dev(udev);
	186	usb_reset_device(udev);
	187
	188	usb_set_intfdata(usb_intf, dev);
	189
	190	ret = __mt76u_init(mdev, usb_intf, &bus_ops);
	191	if (ret < 0)
	192	goto error;
	193
	194	mdev->rev = (mt76_rr(dev, MT_HW_CHIPID) << 16) \|
	195	(mt76_rr(dev, MT_HW_REV) & 0xff);
	196	dev_dbg(mdev->dev, "ASIC revision: %04x\n", mdev->rev);
	197
	198	if (mt76_get_field(dev, MT_CONN_ON_MISC, MT_TOP_MISC2_FW_N9_RDY)) {
	199	ret = mt792xu_wfsys_reset(dev);
	200	if (ret)
	201	goto error;
	202	}
	203
	204	ret = mt792xu_mcu_power_on(dev);
	205	if (ret)
	206	goto error;
	207
	208	ret = mt76u_alloc_mcu_queue(&dev->mt76);
	209	if (ret)
	210	goto error;
	211
	212	ret = mt76u_alloc_queues(&dev->mt76);
	213	if (ret)
	214	goto error;
	215
	216	ret = mt792xu_dma_init(dev, false);
	217	if (ret)
	218	goto error;
	219
	220	hw = mt76_hw(dev);
	221	/* check hw sg support in order to enable AMSDU */
	222	hw->max_tx_fragments = mdev->usb.sg_en ? MT_HW_TXP_MAX_BUF_NUM : 1;
	223
	224	ret = mt7925_register_device(dev);
	225	if (ret)
	226	goto error;
	227
	228	return 0;
	229
	230	error:
	231	mt76u_queues_deinit(&dev->mt76);
	232
	233	usb_set_intfdata(usb_intf, NULL);
	234	usb_put_dev(interface_to_usbdev(usb_intf));
	235
	236	mt76_free_device(&dev->mt76);
	237
	238	return ret;
	239	}
240
241	#ifdef CONFIG_PM
242	static int mt7925u_suspend(struct usb_interface *intf, pm_message_t state)
243	{
244	struct mt792x_dev *dev = usb_get_intfdata(intf);
245	struct mt76_connac_pm *pm = &dev->pm;
246	int err;
247
248	pm->suspended = true;
249	flush_work(&dev->reset_work);
250
251	err = mt76_connac_mcu_set_hif_suspend(&dev->mt76, true);
252	if (err)
253	goto failed;
254
255	mt76u_stop_rx(&dev->mt76);
256	mt76u_stop_tx(&dev->mt76);
257
258	return 0;
259
260	failed:
261	pm->suspended = false;
262
263	if (err < 0)
264	mt792x_reset(&dev->mt76);
265
266	return err;
267	}
268
269	static int mt7925u_resume(struct usb_interface *intf)
270	{
271	struct mt792x_dev *dev = usb_get_intfdata(intf);
272	struct mt76_connac_pm *pm = &dev->pm;
273	bool reinit = true;
274	int err, i;
275
276	for (i = 0; i < 10; i++) {
277	u32 val = mt76_rr(dev, MT_WF_SW_DEF_CR_USB_MCU_EVENT);
278
279	if (!(val & MT_WF_SW_SER_TRIGGER_SUSPEND)) {
280	reinit = false;
281	break;
282	}
283	if (val & MT_WF_SW_SER_DONE_SUSPEND) {
284	mt76_wr(dev, MT_WF_SW_DEF_CR_USB_MCU_EVENT, 0);
285	break;
286	}
287
288	msleep(20);
289	}
290
291	if (reinit \|\| mt792x_dma_need_reinit(dev)) {
292	err = mt792xu_dma_init(dev, true);
293	if (err)
294	goto failed;
295	}
296
297	err = mt76u_resume_rx(&dev->mt76);
298	if (err < 0)
299	goto failed;
300
301	err = mt76_connac_mcu_set_hif_suspend(&dev->mt76, false);
302	failed:
303	pm->suspended = false;
304
305	if (err < 0)
306	mt792x_reset(&dev->mt76);
307
308	return err;
309	}
310	#endif /* CONFIG_PM */
311
312	MODULE_DEVICE_TABLE(usb, mt7925u_device_table);
313	MODULE_FIRMWARE(MT7925_FIRMWARE_WM);
314	MODULE_FIRMWARE(MT7925_ROM_PATCH);
315
316	static struct usb_driver mt7925u_driver = {
317	.name = KBUILD_MODNAME,
318	.id_table = mt7925u_device_table,
319	.probe = mt7925u_probe,
320	.disconnect = mt792xu_disconnect,
321	#ifdef CONFIG_PM
322	.suspend = mt7925u_suspend,
323	.resume = mt7925u_resume,
324	.reset_resume = mt7925u_resume,
325	#endif /* CONFIG_PM */
326	.soft_unbind = 1,
327	.disable_hub_initiated_lpm = 1,
328	};
329	module_usb_driver(mt7925u_driver);
330
331	MODULE_AUTHOR("Lorenzo Bianconi <lorenzo@kernel.org>");
f3f8f050	332	MODULE_DESCRIPTION("MediaTek MT7925U (USB) wireless driver");
c948b5da	333	MODULE_LICENSE("Dual BSD/GPL");