[mirror_ubuntu-jammy-kernel.git] / drivers / bluetooth / btqca.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 *  Bluetooth supports for Qualcomm Atheros chips
 *
 *  Copyright (c) 2015 The Linux Foundation. All rights reserved.
 */
#include <linux/module.h>
#include <linux/firmware.h>

#include <net/bluetooth/bluetooth.h>
#include <net/bluetooth/hci_core.h>

#include "btqca.h"

#define VERSION "0.1"

int qca_read_soc_version(struct hci_dev *hdev, u32 *soc_version,
			 enum qca_btsoc_type soc_type)
{
	struct sk_buff *skb;
	struct edl_event_hdr *edl;
	struct qca_btsoc_version *ver;
	char cmd;
	int err = 0;
	u8 event_type = HCI_EV_VENDOR;
	u8 rlen = sizeof(*edl) + sizeof(*ver);
	u8 rtype = EDL_APP_VER_RES_EVT;

	bt_dev_dbg(hdev, "QCA Version Request");

	/* Unlike other SoC's sending version command response as payload to
	 * VSE event. WCN3991 sends version command response as a payload to
	 * command complete event.
	 */
	if (soc_type == QCA_WCN3991) {
		event_type = 0;
		rlen += 1;
		rtype = EDL_PATCH_VER_REQ_CMD;
	}

	cmd = EDL_PATCH_VER_REQ_CMD;
	skb = __hci_cmd_sync_ev(hdev, EDL_PATCH_CMD_OPCODE, EDL_PATCH_CMD_LEN,
				&cmd, event_type, HCI_INIT_TIMEOUT);
	if (IS_ERR(skb)) {
		err = PTR_ERR(skb);
		bt_dev_err(hdev, "Reading QCA version information failed (%d)",
			   err);
		return err;
	}

	if (skb->len != rlen) {
		bt_dev_err(hdev, "QCA Version size mismatch len %d", skb->len);
		err = -EILSEQ;
		goto out;
	}

	edl = (struct edl_event_hdr *)(skb->data);
	if (!edl) {
		bt_dev_err(hdev, "QCA TLV with no header");
		err = -EILSEQ;
		goto out;
	}

	if (edl->cresp != EDL_CMD_REQ_RES_EVT ||
	    edl->rtype != rtype) {
		bt_dev_err(hdev, "QCA Wrong packet received %d %d", edl->cresp,
			   edl->rtype);
		err = -EIO;
		goto out;
	}

	if (soc_type == QCA_WCN3991)
		memmove(&edl->data, &edl->data[1], sizeof(*ver));

	ver = (struct qca_btsoc_version *)(edl->data);

	BT_DBG("%s: Product:0x%08x", hdev->name, le32_to_cpu(ver->product_id));
	BT_DBG("%s: Patch  :0x%08x", hdev->name, le16_to_cpu(ver->patch_ver));
	BT_DBG("%s: ROM    :0x%08x", hdev->name, le16_to_cpu(ver->rom_ver));
	BT_DBG("%s: SOC    :0x%08x", hdev->name, le32_to_cpu(ver->soc_id));

	/* QCA chipset version can be decided by patch and SoC
	 * version, combination with upper 2 bytes from SoC
	 * and lower 2 bytes from patch will be used.
	 */
	*soc_version = (le32_to_cpu(ver->soc_id) << 16) |
			(le16_to_cpu(ver->rom_ver) & 0x0000ffff);
	if (*soc_version == 0)
		err = -EILSEQ;

out:
	kfree_skb(skb);
	if (err)
		bt_dev_err(hdev, "QCA Failed to get version (%d)", err);

	return err;
}
EXPORT_SYMBOL_GPL(qca_read_soc_version);

static int qca_send_reset(struct hci_dev *hdev)
{
	struct sk_buff *skb;
	int err;

	bt_dev_dbg(hdev, "QCA HCI_RESET");

	skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
	if (IS_ERR(skb)) {
		err = PTR_ERR(skb);
		bt_dev_err(hdev, "QCA Reset failed (%d)", err);
		return err;
	}

	kfree_skb(skb);

	return 0;
}

int qca_send_pre_shutdown_cmd(struct hci_dev *hdev)
{
	struct sk_buff *skb;
	int err;

	bt_dev_dbg(hdev, "QCA pre shutdown cmd");

	skb = __hci_cmd_sync_ev(hdev, QCA_PRE_SHUTDOWN_CMD, 0,
				NULL, HCI_EV_CMD_COMPLETE, HCI_INIT_TIMEOUT);

	if (IS_ERR(skb)) {
		err = PTR_ERR(skb);
		bt_dev_err(hdev, "QCA preshutdown_cmd failed (%d)", err);
		return err;
	}

	kfree_skb(skb);

	return 0;
}
EXPORT_SYMBOL_GPL(qca_send_pre_shutdown_cmd);

static void qca_tlv_check_data(struct qca_fw_config *config,
				const struct firmware *fw)
{
	const u8 *data;
	u32 type_len;
	u16 tag_id, tag_len;
	int idx, length;
	struct tlv_type_hdr *tlv;
	struct tlv_type_patch *tlv_patch;
	struct tlv_type_nvm *tlv_nvm;

	tlv = (struct tlv_type_hdr *)fw->data;

	type_len = le32_to_cpu(tlv->type_len);
	length = (type_len >> 8) & 0x00ffffff;

	BT_DBG("TLV Type\t\t : 0x%x", type_len & 0x000000ff);
	BT_DBG("Length\t\t : %d bytes", length);

	config->dnld_mode = QCA_SKIP_EVT_NONE;
	config->dnld_type = QCA_SKIP_EVT_NONE;

	switch (config->type) {
	case TLV_TYPE_PATCH:
		tlv_patch = (struct tlv_type_patch *)tlv->data;

		/* For Rome version 1.1 to 3.1, all segment commands
		 * are acked by a vendor specific event (VSE).
		 * For Rome >= 3.2, the download mode field indicates
		 * if VSE is skipped by the controller.
		 * In case VSE is skipped, only the last segment is acked.
		 */
		config->dnld_mode = tlv_patch->download_mode;
		config->dnld_type = config->dnld_mode;

		BT_DBG("Total Length           : %d bytes",
		       le32_to_cpu(tlv_patch->total_size));
		BT_DBG("Patch Data Length      : %d bytes",
		       le32_to_cpu(tlv_patch->data_length));
		BT_DBG("Signing Format Version : 0x%x",
		       tlv_patch->format_version);
		BT_DBG("Signature Algorithm    : 0x%x",
		       tlv_patch->signature);
		BT_DBG("Download mode          : 0x%x",
		       tlv_patch->download_mode);
		BT_DBG("Reserved               : 0x%x",
		       tlv_patch->reserved1);
		BT_DBG("Product ID             : 0x%04x",
		       le16_to_cpu(tlv_patch->product_id));
		BT_DBG("Rom Build Version      : 0x%04x",
		       le16_to_cpu(tlv_patch->rom_build));
		BT_DBG("Patch Version          : 0x%04x",
		       le16_to_cpu(tlv_patch->patch_version));
		BT_DBG("Reserved               : 0x%x",
		       le16_to_cpu(tlv_patch->reserved2));
		BT_DBG("Patch Entry Address    : 0x%x",
		       le32_to_cpu(tlv_patch->entry));
		break;

	case TLV_TYPE_NVM:
		idx = 0;
		data = tlv->data;
		while (idx < length) {
			tlv_nvm = (struct tlv_type_nvm *)(data + idx);

			tag_id = le16_to_cpu(tlv_nvm->tag_id);
			tag_len = le16_to_cpu(tlv_nvm->tag_len);

			/* Update NVM tags as needed */
			switch (tag_id) {
			case EDL_TAG_ID_HCI:
				/* HCI transport layer parameters
				 * enabling software inband sleep
				 * onto controller side.
				 */
				tlv_nvm->data[0] |= 0x80;

				/* UART Baud Rate */
				tlv_nvm->data[2] = config->user_baud_rate;

				break;

			case EDL_TAG_ID_DEEP_SLEEP:
				/* Sleep enable mask
				 * enabling deep sleep feature on controller.
				 */
				tlv_nvm->data[0] |= 0x01;

				break;
			}

			idx += (sizeof(u16) + sizeof(u16) + 8 + tag_len);
		}
		break;

	default:
		BT_ERR("Unknown TLV type %d", config->type);
		break;
	}
}

static int qca_tlv_send_segment(struct hci_dev *hdev, int seg_size,
				const u8 *data, enum qca_tlv_dnld_mode mode,
				enum qca_btsoc_type soc_type)
{
	struct sk_buff *skb;
	struct edl_event_hdr *edl;
	struct tlv_seg_resp *tlv_resp;
	u8 cmd[MAX_SIZE_PER_TLV_SEGMENT + 2];
	int err = 0;
	u8 event_type = HCI_EV_VENDOR;
	u8 rlen = (sizeof(*edl) + sizeof(*tlv_resp));
	u8 rtype = EDL_TVL_DNLD_RES_EVT;

	cmd[0] = EDL_PATCH_TLV_REQ_CMD;
	cmd[1] = seg_size;
	memcpy(cmd + 2, data, seg_size);

	if (mode == QCA_SKIP_EVT_VSE_CC || mode == QCA_SKIP_EVT_VSE)
		return __hci_cmd_send(hdev, EDL_PATCH_CMD_OPCODE, seg_size + 2,
				      cmd);

	/* Unlike other SoC's sending version command response as payload to
	 * VSE event. WCN3991 sends version command response as a payload to
	 * command complete event.
	 */
	if (soc_type == QCA_WCN3991) {
		event_type = 0;
		rlen = sizeof(*edl);
		rtype = EDL_PATCH_TLV_REQ_CMD;
	}

	skb = __hci_cmd_sync_ev(hdev, EDL_PATCH_CMD_OPCODE, seg_size + 2, cmd,
				event_type, HCI_INIT_TIMEOUT);
	if (IS_ERR(skb)) {
		err = PTR_ERR(skb);
		bt_dev_err(hdev, "QCA Failed to send TLV segment (%d)", err);
		return err;
	}

	if (skb->len != rlen) {
		bt_dev_err(hdev, "QCA TLV response size mismatch");
		err = -EILSEQ;
		goto out;
	}

	edl = (struct edl_event_hdr *)(skb->data);
	if (!edl) {
		bt_dev_err(hdev, "TLV with no header");
		err = -EILSEQ;
		goto out;
	}

	if (edl->cresp != EDL_CMD_REQ_RES_EVT || edl->rtype != rtype) {
		bt_dev_err(hdev, "QCA TLV with error stat 0x%x rtype 0x%x",
			   edl->cresp, edl->rtype);
		err = -EIO;
	}

	if (soc_type == QCA_WCN3991)
		goto out;

	tlv_resp = (struct tlv_seg_resp *)(edl->data);
	if (tlv_resp->result) {
		bt_dev_err(hdev, "QCA TLV with error stat 0x%x rtype 0x%x (0x%x)",
			   edl->cresp, edl->rtype, tlv_resp->result);
	}

out:
	kfree_skb(skb);

	return err;
}

static int qca_inject_cmd_complete_event(struct hci_dev *hdev)
{
	struct hci_event_hdr *hdr;
	struct hci_ev_cmd_complete *evt;
	struct sk_buff *skb;

	skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_KERNEL);
	if (!skb)
		return -ENOMEM;

	hdr = skb_put(skb, sizeof(*hdr));
	hdr->evt = HCI_EV_CMD_COMPLETE;
	hdr->plen = sizeof(*evt) + 1;

	evt = skb_put(skb, sizeof(*evt));
	evt->ncmd = 1;
	evt->opcode = cpu_to_le16(QCA_HCI_CC_OPCODE);

	skb_put_u8(skb, QCA_HCI_CC_SUCCESS);

	hci_skb_pkt_type(skb) = HCI_EVENT_PKT;

	return hci_recv_frame(hdev, skb);
}

static int qca_download_firmware(struct hci_dev *hdev,
				 struct qca_fw_config *config,
				 enum qca_btsoc_type soc_type)
{
	const struct firmware *fw;
	const u8 *segment;
	int ret, remain, i = 0;

	bt_dev_info(hdev, "QCA Downloading %s", config->fwname);

	ret = request_firmware(&fw, config->fwname, &hdev->dev);
	if (ret) {
		bt_dev_err(hdev, "QCA Failed to request file: %s (%d)",
			   config->fwname, ret);
		return ret;
	}

	qca_tlv_check_data(config, fw);

	segment = fw->data;
	remain = fw->size;
	while (remain > 0) {
		int segsize = min(MAX_SIZE_PER_TLV_SEGMENT, remain);

		bt_dev_dbg(hdev, "Send segment %d, size %d", i++, segsize);

		remain -= segsize;
		/* The last segment is always acked regardless download mode */
		if (!remain || segsize < MAX_SIZE_PER_TLV_SEGMENT)
			config->dnld_mode = QCA_SKIP_EVT_NONE;

		ret = qca_tlv_send_segment(hdev, segsize, segment,
					   config->dnld_mode, soc_type);
		if (ret)
			goto out;

		segment += segsize;
	}

	/* Latest qualcomm chipsets are not sending a command complete event
	 * for every fw packet sent. They only respond with a vendor specific
	 * event for the last packet. This optimization in the chip will
	 * decrease the BT in initialization time. Here we will inject a command
	 * complete event to avoid a command timeout error message.
	 */
	if (config->dnld_type == QCA_SKIP_EVT_VSE_CC ||
	    config->dnld_type == QCA_SKIP_EVT_VSE)
		ret = qca_inject_cmd_complete_event(hdev);

out:
	release_firmware(fw);

	return ret;
}

int qca_set_bdaddr_rome(struct hci_dev *hdev, const bdaddr_t *bdaddr)
{
	struct sk_buff *skb;
	u8 cmd[9];
	int err;

	cmd[0] = EDL_NVM_ACCESS_SET_REQ_CMD;
	cmd[1] = 0x02; 			/* TAG ID */
	cmd[2] = sizeof(bdaddr_t);	/* size */
	memcpy(cmd + 3, bdaddr, sizeof(bdaddr_t));
	skb = __hci_cmd_sync_ev(hdev, EDL_NVM_ACCESS_OPCODE, sizeof(cmd), cmd,
				HCI_EV_VENDOR, HCI_INIT_TIMEOUT);
	if (IS_ERR(skb)) {
		err = PTR_ERR(skb);
		bt_dev_err(hdev, "QCA Change address command failed (%d)", err);
		return err;
	}

	kfree_skb(skb);

	return 0;
}
EXPORT_SYMBOL_GPL(qca_set_bdaddr_rome);

int qca_uart_setup(struct hci_dev *hdev, uint8_t baudrate,
		   enum qca_btsoc_type soc_type, u32 soc_ver,
		   const char *firmware_name)
{
	struct qca_fw_config config;
	int err;
	u8 rom_ver = 0;

	bt_dev_dbg(hdev, "QCA setup on UART");

	config.user_baud_rate = baudrate;

	/* Download rampatch file */
	config.type = TLV_TYPE_PATCH;
	if (qca_is_wcn399x(soc_type)) {
		/* Firmware files to download are based on ROM version.
		 * ROM version is derived from last two bytes of soc_ver.
		 */
		rom_ver = ((soc_ver & 0x00000f00) >> 0x04) |
			    (soc_ver & 0x0000000f);
		snprintf(config.fwname, sizeof(config.fwname),
			 "qca/crbtfw%02x.tlv", rom_ver);
	} else {
		snprintf(config.fwname, sizeof(config.fwname),
			 "qca/rampatch_%08x.bin", soc_ver);
	}

	err = qca_download_firmware(hdev, &config, soc_type);
	if (err < 0) {
		bt_dev_err(hdev, "QCA Failed to download patch (%d)", err);
		return err;
	}

	/* Give the controller some time to get ready to receive the NVM */
	msleep(10);

	/* Download NVM configuration */
	config.type = TLV_TYPE_NVM;
	if (firmware_name)
		snprintf(config.fwname, sizeof(config.fwname),
			 "qca/%s", firmware_name);
	else if (qca_is_wcn399x(soc_type))
		snprintf(config.fwname, sizeof(config.fwname),
			 "qca/crnv%02x.bin", rom_ver);
	else
		snprintf(config.fwname, sizeof(config.fwname),
			 "qca/nvm_%08x.bin", soc_ver);

	err = qca_download_firmware(hdev, &config, soc_type);
	if (err < 0) {
		bt_dev_err(hdev, "QCA Failed to download NVM (%d)", err);
		return err;
	}

	/* Perform HCI reset */
	err = qca_send_reset(hdev);
	if (err < 0) {
		bt_dev_err(hdev, "QCA Failed to run HCI_RESET (%d)", err);
		return err;
	}

	bt_dev_info(hdev, "QCA setup on UART is completed");

	return 0;
}
EXPORT_SYMBOL_GPL(qca_uart_setup);

int qca_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr)
{
	struct sk_buff *skb;
	int err;

	skb = __hci_cmd_sync_ev(hdev, EDL_WRITE_BD_ADDR_OPCODE, 6, bdaddr,
				HCI_EV_VENDOR, HCI_INIT_TIMEOUT);
	if (IS_ERR(skb)) {
		err = PTR_ERR(skb);
		bt_dev_err(hdev, "QCA Change address cmd failed (%d)", err);
		return err;
	}

	kfree_skb(skb);

	return 0;
}
EXPORT_SYMBOL_GPL(qca_set_bdaddr);


MODULE_AUTHOR("Ben Young Tae Kim <ytkim@qca.qualcomm.com>");
MODULE_DESCRIPTION("Bluetooth support for Qualcomm Atheros family ver " VERSION);
MODULE_VERSION(VERSION);
MODULE_LICENSE("GPL");
Commit	Line	Data
45051539	1	// SPDX-License-Identifier: GPL-2.0-only
83e81961 BYTK	2	/*
	3	* Bluetooth supports for Qualcomm Atheros chips
	4	*
	5	* Copyright (c) 2015 The Linux Foundation. All rights reserved.
83e81961 BYTK	6	*/
	7	#include <linux/module.h>
	8	#include <linux/firmware.h>
	9
	10	#include <net/bluetooth/bluetooth.h>
	11	#include <net/bluetooth/hci_core.h>
	12
	13	#include "btqca.h"
	14
	15	#define VERSION "0.1"
	16
7d250a06 BG	17	int qca_read_soc_version(struct hci_dev hdev, u32 soc_version,
7d250a06 BG	18	enum qca_btsoc_type soc_type)
83e81961 BYTK	19	{
	20	struct sk_buff *skb;
	21	struct edl_event_hdr *edl;
e303d124	22	struct qca_btsoc_version *ver;
83e81961 BYTK	23	char cmd;
83e81961 BYTK	24	int err = 0;
7d250a06 BG	25	u8 event_type = HCI_EV_VENDOR;
	26	u8 rlen = sizeof(edl) + sizeof(ver);
	27	u8 rtype = EDL_APP_VER_RES_EVT;
83e81961	28
ba493d4f	29	bt_dev_dbg(hdev, "QCA Version Request");
83e81961	30
7d250a06 BG	31	/* Unlike other SoC's sending version command response as payload to
	32	* VSE event. WCN3991 sends version command response as a payload to
	33	* command complete event.
	34	*/
	35	if (soc_type == QCA_WCN3991) {
	36	event_type = 0;
	37	rlen += 1;
	38	rtype = EDL_PATCH_VER_REQ_CMD;
	39	}
	40
83e81961 BYTK	41	cmd = EDL_PATCH_VER_REQ_CMD;
83e81961 BYTK	42	skb = __hci_cmd_sync_ev(hdev, EDL_PATCH_CMD_OPCODE, EDL_PATCH_CMD_LEN,
7d250a06	43	&cmd, event_type, HCI_INIT_TIMEOUT);
83e81961 BYTK	44	if (IS_ERR(skb)) {
83e81961 BYTK	45	err = PTR_ERR(skb);
ba493d4f BG	46	bt_dev_err(hdev, "Reading QCA version information failed (%d)",
ba493d4f BG	47	err);
83e81961 BYTK	48	return err;
	49	}
	50
7d250a06	51	if (skb->len != rlen) {
ba493d4f	52	bt_dev_err(hdev, "QCA Version size mismatch len %d", skb->len);
83e81961 BYTK	53	err = -EILSEQ;
	54	goto out;
	55	}
	56
	57	edl = (struct edl_event_hdr *)(skb->data);
0676cab4	58	if (!edl) {
ba493d4f	59	bt_dev_err(hdev, "QCA TLV with no header");
83e81961 BYTK	60	err = -EILSEQ;
	61	goto out;
	62	}
	63
	64	if (edl->cresp != EDL_CMD_REQ_RES_EVT \|\|
7d250a06	65	edl->rtype != rtype) {
ba493d4f BG	66	bt_dev_err(hdev, "QCA Wrong packet received %d %d", edl->cresp,
ba493d4f BG	67	edl->rtype);
83e81961 BYTK	68	err = -EIO;
	69	goto out;
	70	}
	71
7d250a06 BG	72	if (soc_type == QCA_WCN3991)
	73	memmove(&edl->data, &edl->data[1], sizeof(*ver));
	74
e303d124	75	ver = (struct qca_btsoc_version *)(edl->data);
83e81961 BYTK	76
	77	BT_DBG("%s: Product:0x%08x", hdev->name, le32_to_cpu(ver->product_id));
	78	BT_DBG("%s: Patch :0x%08x", hdev->name, le16_to_cpu(ver->patch_ver));
e303d124	79	BT_DBG("%s: ROM :0x%08x", hdev->name, le16_to_cpu(ver->rom_ver));
83e81961 BYTK	80	BT_DBG("%s: SOC :0x%08x", hdev->name, le32_to_cpu(ver->soc_id));
83e81961 BYTK	81
ba493d4f	82	/* QCA chipset version can be decided by patch and SoC
83e81961 BYTK	83	* version, combination with upper 2 bytes from SoC
	84	* and lower 2 bytes from patch will be used.
	85	*/
ba493d4f	86	*soc_version = (le32_to_cpu(ver->soc_id) << 16) \|
e303d124	87	(le16_to_cpu(ver->rom_ver) & 0x0000ffff);
aadebac4 BG	88	if (*soc_version == 0)
aadebac4 BG	89	err = -EILSEQ;
83e81961 BYTK	90
	91	out:
	92	kfree_skb(skb);
aadebac4 BG	93	if (err)
aadebac4 BG	94	bt_dev_err(hdev, "QCA Failed to get version (%d)", err);
83e81961 BYTK	95
	96	return err;
	97	}
ba493d4f	98	EXPORT_SYMBOL_GPL(qca_read_soc_version);
83e81961	99
ba493d4f	100	static int qca_send_reset(struct hci_dev *hdev)
83e81961 BYTK	101	{
	102	struct sk_buff *skb;
	103	int err;
	104
ba493d4f	105	bt_dev_dbg(hdev, "QCA HCI_RESET");
83e81961 BYTK	106
	107	skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
	108	if (IS_ERR(skb)) {
	109	err = PTR_ERR(skb);
ba493d4f	110	bt_dev_err(hdev, "QCA Reset failed (%d)", err);
83e81961 BYTK	111	return err;
	112	}
	113
	114	kfree_skb(skb);
	115
	116	return 0;
	117	}
	118
a2780889 HB	119	int qca_send_pre_shutdown_cmd(struct hci_dev *hdev)
	120	{
	121	struct sk_buff *skb;
	122	int err;
	123
	124	bt_dev_dbg(hdev, "QCA pre shutdown cmd");
	125
010376ab HB	126	skb = __hci_cmd_sync_ev(hdev, QCA_PRE_SHUTDOWN_CMD, 0,
	127	NULL, HCI_EV_CMD_COMPLETE, HCI_INIT_TIMEOUT);
	128
a2780889 HB	129	if (IS_ERR(skb)) {
	130	err = PTR_ERR(skb);
	131	bt_dev_err(hdev, "QCA preshutdown_cmd failed (%d)", err);
	132	return err;
	133	}
	134
	135	kfree_skb(skb);
	136
	137	return 0;
	138	}
	139	EXPORT_SYMBOL_GPL(qca_send_pre_shutdown_cmd);
	140
e303d124	141	static void qca_tlv_check_data(struct qca_fw_config *config,
83e81961 BYTK	142	const struct firmware *fw)
	143	{
	144	const u8 *data;
	145	u32 type_len;
	146	u16 tag_id, tag_len;
	147	int idx, length;
	148	struct tlv_type_hdr *tlv;
	149	struct tlv_type_patch *tlv_patch;
	150	struct tlv_type_nvm *tlv_nvm;
	151
	152	tlv = (struct tlv_type_hdr *)fw->data;
	153
	154	type_len = le32_to_cpu(tlv->type_len);
	155	length = (type_len >> 8) & 0x00ffffff;
	156
	157	BT_DBG("TLV Type\t\t : 0x%x", type_len & 0x000000ff);
	158	BT_DBG("Length\t\t : %d bytes", length);
	159
e303d124 BG	160	config->dnld_mode = QCA_SKIP_EVT_NONE;
e303d124 BG	161	config->dnld_type = QCA_SKIP_EVT_NONE;
6e03126a	162
83e81961 BYTK	163	switch (config->type) {
	164	case TLV_TYPE_PATCH:
	165	tlv_patch = (struct tlv_type_patch *)tlv->data;
6e03126a LP	166
	167	/* For Rome version 1.1 to 3.1, all segment commands
	168	* are acked by a vendor specific event (VSE).
	169	* For Rome >= 3.2, the download mode field indicates
	170	* if VSE is skipped by the controller.
	171	* In case VSE is skipped, only the last segment is acked.
	172	*/
	173	config->dnld_mode = tlv_patch->download_mode;
32646db8	174	config->dnld_type = config->dnld_mode;
6e03126a LP	175
6e03126a LP	176	BT_DBG("Total Length : %d bytes",
83e81961	177	le32_to_cpu(tlv_patch->total_size));
6e03126a	178	BT_DBG("Patch Data Length : %d bytes",
83e81961 BYTK	179	le32_to_cpu(tlv_patch->data_length));
	180	BT_DBG("Signing Format Version : 0x%x",
	181	tlv_patch->format_version);
6e03126a	182	BT_DBG("Signature Algorithm : 0x%x",
83e81961	183	tlv_patch->signature);
6e03126a LP	184	BT_DBG("Download mode : 0x%x",
	185	tlv_patch->download_mode);
	186	BT_DBG("Reserved : 0x%x",
	187	tlv_patch->reserved1);
	188	BT_DBG("Product ID : 0x%04x",
83e81961	189	le16_to_cpu(tlv_patch->product_id));
6e03126a	190	BT_DBG("Rom Build Version : 0x%04x",
83e81961	191	le16_to_cpu(tlv_patch->rom_build));
6e03126a	192	BT_DBG("Patch Version : 0x%04x",
83e81961	193	le16_to_cpu(tlv_patch->patch_version));
6e03126a	194	BT_DBG("Reserved : 0x%x",
83e81961	195	le16_to_cpu(tlv_patch->reserved2));
6e03126a	196	BT_DBG("Patch Entry Address : 0x%x",
83e81961 BYTK	197	le32_to_cpu(tlv_patch->entry));
	198	break;
	199
	200	case TLV_TYPE_NVM:
	201	idx = 0;
	202	data = tlv->data;
	203	while (idx < length) {
	204	tlv_nvm = (struct tlv_type_nvm *)(data + idx);
	205
	206	tag_id = le16_to_cpu(tlv_nvm->tag_id);
	207	tag_len = le16_to_cpu(tlv_nvm->tag_len);
	208
	209	/* Update NVM tags as needed */
	210	switch (tag_id) {
	211	case EDL_TAG_ID_HCI:
	212	/* HCI transport layer parameters
	213	* enabling software inband sleep
	214	* onto controller side.
	215	*/
	216	tlv_nvm->data[0] \|= 0x80;
	217
	218	/* UART Baud Rate */
	219	tlv_nvm->data[2] = config->user_baud_rate;
	220
	221	break;
	222
	223	case EDL_TAG_ID_DEEP_SLEEP:
	224	/* Sleep enable mask
	225	* enabling deep sleep feature on controller.
	226	*/
	227	tlv_nvm->data[0] \|= 0x01;
	228
	229	break;
	230	}
	231
	232	idx += (sizeof(u16) + sizeof(u16) + 8 + tag_len);
	233	}
	234	break;
	235
	236	default:
	237	BT_ERR("Unknown TLV type %d", config->type);
	238	break;
	239	}
	240	}
	241
ba493d4f	242	static int qca_tlv_send_segment(struct hci_dev *hdev, int seg_size,
7d250a06 BG	243	const u8 *data, enum qca_tlv_dnld_mode mode,
7d250a06 BG	244	enum qca_btsoc_type soc_type)
83e81961 BYTK	245	{
	246	struct sk_buff *skb;
	247	struct edl_event_hdr *edl;
	248	struct tlv_seg_resp *tlv_resp;
	249	u8 cmd[MAX_SIZE_PER_TLV_SEGMENT + 2];
	250	int err = 0;
7d250a06 BG	251	u8 event_type = HCI_EV_VENDOR;
	252	u8 rlen = (sizeof(edl) + sizeof(tlv_resp));
	253	u8 rtype = EDL_TVL_DNLD_RES_EVT;
83e81961	254
83e81961 BYTK	255	cmd[0] = EDL_PATCH_TLV_REQ_CMD;
	256	cmd[1] = seg_size;
	257	memcpy(cmd + 2, data, seg_size);
	258
e303d124	259	if (mode == QCA_SKIP_EVT_VSE_CC \|\| mode == QCA_SKIP_EVT_VSE)
6e03126a LP	260	return __hci_cmd_send(hdev, EDL_PATCH_CMD_OPCODE, seg_size + 2,
	261	cmd);
	262
7d250a06 BG	263	/* Unlike other SoC's sending version command response as payload to
	264	* VSE event. WCN3991 sends version command response as a payload to
	265	* command complete event.
	266	*/
	267	if (soc_type == QCA_WCN3991) {
	268	event_type = 0;
	269	rlen = sizeof(*edl);
	270	rtype = EDL_PATCH_TLV_REQ_CMD;
	271	}
	272
83e81961	273	skb = __hci_cmd_sync_ev(hdev, EDL_PATCH_CMD_OPCODE, seg_size + 2, cmd,
7d250a06	274	event_type, HCI_INIT_TIMEOUT);
83e81961 BYTK	275	if (IS_ERR(skb)) {
83e81961 BYTK	276	err = PTR_ERR(skb);
ba493d4f	277	bt_dev_err(hdev, "QCA Failed to send TLV segment (%d)", err);
83e81961 BYTK	278	return err;
	279	}
	280
7d250a06	281	if (skb->len != rlen) {
ba493d4f	282	bt_dev_err(hdev, "QCA TLV response size mismatch");
83e81961 BYTK	283	err = -EILSEQ;
	284	goto out;
	285	}
	286
	287	edl = (struct edl_event_hdr *)(skb->data);
0676cab4	288	if (!edl) {
ba493d4f	289	bt_dev_err(hdev, "TLV with no header");
83e81961 BYTK	290	err = -EILSEQ;
	291	goto out;
	292	}
	293
7d250a06 BG	294	if (edl->cresp != EDL_CMD_REQ_RES_EVT \|\| edl->rtype != rtype) {
	295	bt_dev_err(hdev, "QCA TLV with error stat 0x%x rtype 0x%x",
	296	edl->cresp, edl->rtype);
	297	err = -EIO;
	298	}
83e81961	299
7d250a06 BG	300	if (soc_type == QCA_WCN3991)
	301	goto out;
	302
	303	tlv_resp = (struct tlv_seg_resp *)(edl->data);
	304	if (tlv_resp->result) {
ba493d4f BG	305	bt_dev_err(hdev, "QCA TLV with error stat 0x%x rtype 0x%x (0x%x)",
ba493d4f BG	306	edl->cresp, edl->rtype, tlv_resp->result);
83e81961 BYTK	307	}
	308
	309	out:
	310	kfree_skb(skb);
	311
	312	return err;
	313	}
	314
32646db8 BG	315	static int qca_inject_cmd_complete_event(struct hci_dev *hdev)
	316	{
	317	struct hci_event_hdr *hdr;
	318	struct hci_ev_cmd_complete *evt;
	319	struct sk_buff *skb;
	320
	321	skb = bt_skb_alloc(sizeof(hdr) + sizeof(evt) + 1, GFP_KERNEL);
	322	if (!skb)
	323	return -ENOMEM;
	324
	325	hdr = skb_put(skb, sizeof(*hdr));
	326	hdr->evt = HCI_EV_CMD_COMPLETE;
	327	hdr->plen = sizeof(*evt) + 1;
	328
	329	evt = skb_put(skb, sizeof(*evt));
	330	evt->ncmd = 1;
2fde6afb	331	evt->opcode = cpu_to_le16(QCA_HCI_CC_OPCODE);
32646db8 BG	332
	333	skb_put_u8(skb, QCA_HCI_CC_SUCCESS);
	334
	335	hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
	336
	337	return hci_recv_frame(hdev, skb);
	338	}
	339
ba493d4f	340	static int qca_download_firmware(struct hci_dev *hdev,
7d250a06 BG	341	struct qca_fw_config *config,
7d250a06 BG	342	enum qca_btsoc_type soc_type)
83e81961 BYTK	343	{
83e81961 BYTK	344	const struct firmware *fw;
6e03126a LP	345	const u8 *segment;
6e03126a LP	346	int ret, remain, i = 0;
83e81961	347
ba493d4f	348	bt_dev_info(hdev, "QCA Downloading %s", config->fwname);
83e81961 BYTK	349
	350	ret = request_firmware(&fw, config->fwname, &hdev->dev);
	351	if (ret) {
ba493d4f BG	352	bt_dev_err(hdev, "QCA Failed to request file: %s (%d)",
ba493d4f BG	353	config->fwname, ret);
83e81961 BYTK	354	return ret;
	355	}
	356
ba493d4f	357	qca_tlv_check_data(config, fw);
83e81961	358
6e03126a LP	359	segment = fw->data;
	360	remain = fw->size;
	361	while (remain > 0) {
	362	int segsize = min(MAX_SIZE_PER_TLV_SEGMENT, remain);
	363
	364	bt_dev_dbg(hdev, "Send segment %d, size %d", i++, segsize);
	365
	366	remain -= segsize;
	367	/* The last segment is always acked regardless download mode */
	368	if (!remain \|\| segsize < MAX_SIZE_PER_TLV_SEGMENT)
e303d124	369	config->dnld_mode = QCA_SKIP_EVT_NONE;
6e03126a	370
ba493d4f	371	ret = qca_tlv_send_segment(hdev, segsize, segment,
7d250a06	372	config->dnld_mode, soc_type);
6e03126a	373	if (ret)
32646db8	374	goto out;
6e03126a LP	375
6e03126a LP	376	segment += segsize;
83e81961 BYTK	377	}
83e81961 BYTK	378
32646db8 BG	379	/* Latest qualcomm chipsets are not sending a command complete event
	380	* for every fw packet sent. They only respond with a vendor specific
	381	* event for the last packet. This optimization in the chip will
	382	* decrease the BT in initialization time. Here we will inject a command
	383	* complete event to avoid a command timeout error message.
	384	*/
e303d124 BG	385	if (config->dnld_type == QCA_SKIP_EVT_VSE_CC \|\|
e303d124 BG	386	config->dnld_type == QCA_SKIP_EVT_VSE)
c7c5ae29	387	ret = qca_inject_cmd_complete_event(hdev);
32646db8 BG	388
32646db8 BG	389	out:
83e81961 BYTK	390	release_firmware(fw);
	391
	392	return ret;
	393	}
	394
	395	int qca_set_bdaddr_rome(struct hci_dev hdev, const bdaddr_t bdaddr)
	396	{
	397	struct sk_buff *skb;
	398	u8 cmd[9];
	399	int err;
	400
	401	cmd[0] = EDL_NVM_ACCESS_SET_REQ_CMD;
	402	cmd[1] = 0x02; /* TAG ID */
	403	cmd[2] = sizeof(bdaddr_t); /* size */
	404	memcpy(cmd + 3, bdaddr, sizeof(bdaddr_t));
	405	skb = __hci_cmd_sync_ev(hdev, EDL_NVM_ACCESS_OPCODE, sizeof(cmd), cmd,
e4cc5a18	406	HCI_EV_VENDOR, HCI_INIT_TIMEOUT);
83e81961 BYTK	407	if (IS_ERR(skb)) {
83e81961 BYTK	408	err = PTR_ERR(skb);
ba493d4f	409	bt_dev_err(hdev, "QCA Change address command failed (%d)", err);
83e81961 BYTK	410	return err;
	411	}
	412
	413	kfree_skb(skb);
	414
	415	return 0;
	416	}
	417	EXPORT_SYMBOL_GPL(qca_set_bdaddr_rome);
	418
aadebac4	419	int qca_uart_setup(struct hci_dev *hdev, uint8_t baudrate,
99c905c6 RL	420	enum qca_btsoc_type soc_type, u32 soc_ver,
99c905c6 RL	421	const char *firmware_name)
83e81961	422	{
e303d124	423	struct qca_fw_config config;
83e81961	424	int err;
523760b7	425	u8 rom_ver = 0;
83e81961	426
ba493d4f	427	bt_dev_dbg(hdev, "QCA setup on UART");
83e81961 BYTK	428
	429	config.user_baud_rate = baudrate;
	430
83e81961 BYTK	431	/* Download rampatch file */
83e81961 BYTK	432	config.type = TLV_TYPE_PATCH;
523760b7	433	if (qca_is_wcn399x(soc_type)) {
4219d468 BG	434	/* Firmware files to download are based on ROM version.
	435	* ROM version is derived from last two bytes of soc_ver.
	436	*/
	437	rom_ver = ((soc_ver & 0x00000f00) >> 0x04) \|
	438	(soc_ver & 0x0000000f);
	439	snprintf(config.fwname, sizeof(config.fwname),
	440	"qca/crbtfw%02x.tlv", rom_ver);
	441	} else {
	442	snprintf(config.fwname, sizeof(config.fwname),
	443	"qca/rampatch_%08x.bin", soc_ver);
	444	}
	445
7d250a06	446	err = qca_download_firmware(hdev, &config, soc_type);
83e81961	447	if (err < 0) {
ba493d4f	448	bt_dev_err(hdev, "QCA Failed to download patch (%d)", err);
83e81961 BYTK	449	return err;
	450	}
	451
8059ba0b MK	452	/* Give the controller some time to get ready to receive the NVM */
	453	msleep(10);
	454
83e81961 BYTK	455	/* Download NVM configuration */
83e81961 BYTK	456	config.type = TLV_TYPE_NVM;
99c905c6 RL	457	if (firmware_name)
	458	snprintf(config.fwname, sizeof(config.fwname),
	459	"qca/%s", firmware_name);
	460	else if (qca_is_wcn399x(soc_type))
4219d468 BG	461	snprintf(config.fwname, sizeof(config.fwname),
	462	"qca/crnv%02x.bin", rom_ver);
	463	else
	464	snprintf(config.fwname, sizeof(config.fwname),
	465	"qca/nvm_%08x.bin", soc_ver);
	466
7d250a06	467	err = qca_download_firmware(hdev, &config, soc_type);
83e81961	468	if (err < 0) {
ba493d4f	469	bt_dev_err(hdev, "QCA Failed to download NVM (%d)", err);
83e81961 BYTK	470	return err;
	471	}
	472
	473	/* Perform HCI reset */
ba493d4f	474	err = qca_send_reset(hdev);
83e81961	475	if (err < 0) {
ba493d4f	476	bt_dev_err(hdev, "QCA Failed to run HCI_RESET (%d)", err);
83e81961 BYTK	477	return err;
	478	}
	479
ba493d4f	480	bt_dev_info(hdev, "QCA setup on UART is completed");
83e81961 BYTK	481
	482	return 0;
	483	}
ba493d4f	484	EXPORT_SYMBOL_GPL(qca_uart_setup);
83e81961	485
5c0a1001 BG	486	int qca_set_bdaddr(struct hci_dev hdev, const bdaddr_t bdaddr)
	487	{
	488	struct sk_buff *skb;
	489	int err;
	490
	491	skb = __hci_cmd_sync_ev(hdev, EDL_WRITE_BD_ADDR_OPCODE, 6, bdaddr,
	492	HCI_EV_VENDOR, HCI_INIT_TIMEOUT);
	493	if (IS_ERR(skb)) {
	494	err = PTR_ERR(skb);
	495	bt_dev_err(hdev, "QCA Change address cmd failed (%d)", err);
	496	return err;
	497	}
	498
	499	kfree_skb(skb);
	500
	501	return 0;
	502	}
	503	EXPORT_SYMBOL_GPL(qca_set_bdaddr);
	504
523760b7	505
83e81961 BYTK	506	MODULE_AUTHOR("Ben Young Tae Kim <ytkim@qca.qualcomm.com>");
	507	MODULE_DESCRIPTION("Bluetooth support for Qualcomm Atheros family ver " VERSION);
	508	MODULE_VERSION(VERSION);
	509	MODULE_LICENSE("GPL");