[linux-2.6-block.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, struct qca_btsoc_version *ver,
			 enum qca_btsoc_type soc_type)
{
	struct sk_buff *skb;
	struct edl_event_hdr *edl;
	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)
		memcpy(ver, edl->data + 1, sizeof(*ver));
	else
		memcpy(ver, &edl->data, sizeof(*ver));

	bt_dev_info(hdev, "QCA Product ID   :0x%08x",
		    le32_to_cpu(ver->product_id));
	bt_dev_info(hdev, "QCA SOC Version  :0x%08x",
		    le32_to_cpu(ver->soc_id));
	bt_dev_info(hdev, "QCA ROM Version  :0x%08x",
		    le16_to_cpu(ver->rom_ver));
	bt_dev_info(hdev, "QCA Patch Version:0x%08x",
		    le16_to_cpu(ver->patch_ver));

	if (ver->soc_id == 0 || ver->rom_ver == 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, enum qca_btsoc_type soc_type)
{
	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;
	uint8_t nvm_baud_rate = config->user_baud_rate;

	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 */
				if (soc_type >= QCA_WCN3991)
					tlv_nvm->data[1] = nvm_baud_rate;
				else
					tlv_nvm->data[2] = nvm_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, soc_type);

	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;
}

static int qca_disable_soc_logging(struct hci_dev *hdev)
{
	struct sk_buff *skb;
	u8 cmd[2];
	int err;

	cmd[0] = QCA_DISABLE_LOGGING_SUB_OP;
	cmd[1] = 0x00;
	skb = __hci_cmd_sync_ev(hdev, QCA_DISABLE_LOGGING, sizeof(cmd), cmd,
				HCI_EV_CMD_COMPLETE, HCI_INIT_TIMEOUT);
	if (IS_ERR(skb)) {
		err = PTR_ERR(skb);
		bt_dev_err(hdev, "QCA Failed to disable soc logging(%d)", err);
		return err;
	}

	kfree_skb(skb);

	return 0;
}

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, struct qca_btsoc_version ver,
		   const char *firmware_name)
{
	struct qca_fw_config config;
	int err;
	u8 rom_ver = 0;
	u32 soc_ver;

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

	soc_ver = get_soc_ver(ver.soc_id, ver.rom_ver);

	bt_dev_info(hdev, "QCA controller version 0x%08x", soc_ver);

	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 if (soc_type == QCA_QCA6390) {
		rom_ver = ((soc_ver & 0x00000f00) >> 0x04) |
			    (soc_ver & 0x0000000f);
		snprintf(config.fwname, sizeof(config.fwname),
			 "qca/htbtfw%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)) {
		if (ver.soc_id == QCA_WCN3991_SOC_ID) {
			snprintf(config.fwname, sizeof(config.fwname),
				 "qca/crnv%02xu.bin", rom_ver);
		} else {
			snprintf(config.fwname, sizeof(config.fwname),
				 "qca/crnv%02x.bin", rom_ver);
		}
	}
	else if (soc_type == QCA_QCA6390)
		snprintf(config.fwname, sizeof(config.fwname),
			 "qca/htnv%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;
	}

	if (soc_type >= QCA_WCN3991) {
		err = qca_disable_soc_logging(hdev);
		if (err < 0)
			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
059924fd	17	int qca_read_soc_version(struct hci_dev hdev, struct qca_btsoc_version ver,
7d250a06	18	enum qca_btsoc_type soc_type)
83e81961 BYTK	19	{
	20	struct sk_buff *skb;
	21	struct edl_event_hdr *edl;
83e81961 BYTK	22	char cmd;
83e81961 BYTK	23	int err = 0;
7d250a06 BG	24	u8 event_type = HCI_EV_VENDOR;
	25	u8 rlen = sizeof(edl) + sizeof(ver);
	26	u8 rtype = EDL_APP_VER_RES_EVT;
83e81961	27
ba493d4f	28	bt_dev_dbg(hdev, "QCA Version Request");
83e81961	29
7d250a06 BG	30	/* Unlike other SoC's sending version command response as payload to
	31	* VSE event. WCN3991 sends version command response as a payload to
	32	* command complete event.
	33	*/
e5d6468f	34	if (soc_type >= QCA_WCN3991) {
7d250a06 BG	35	event_type = 0;
	36	rlen += 1;
	37	rtype = EDL_PATCH_VER_REQ_CMD;
	38	}
	39
83e81961 BYTK	40	cmd = EDL_PATCH_VER_REQ_CMD;
83e81961 BYTK	41	skb = __hci_cmd_sync_ev(hdev, EDL_PATCH_CMD_OPCODE, EDL_PATCH_CMD_LEN,
7d250a06	42	&cmd, event_type, HCI_INIT_TIMEOUT);
83e81961 BYTK	43	if (IS_ERR(skb)) {
83e81961 BYTK	44	err = PTR_ERR(skb);
ba493d4f BG	45	bt_dev_err(hdev, "Reading QCA version information failed (%d)",
ba493d4f BG	46	err);
83e81961 BYTK	47	return err;
	48	}
	49
7d250a06	50	if (skb->len != rlen) {
ba493d4f	51	bt_dev_err(hdev, "QCA Version size mismatch len %d", skb->len);
83e81961 BYTK	52	err = -EILSEQ;
	53	goto out;
	54	}
	55
	56	edl = (struct edl_event_hdr *)(skb->data);
0676cab4	57	if (!edl) {
ba493d4f	58	bt_dev_err(hdev, "QCA TLV with no header");
83e81961 BYTK	59	err = -EILSEQ;
	60	goto out;
	61	}
	62
	63	if (edl->cresp != EDL_CMD_REQ_RES_EVT \|\|
7d250a06	64	edl->rtype != rtype) {
ba493d4f BG	65	bt_dev_err(hdev, "QCA Wrong packet received %d %d", edl->cresp,
ba493d4f BG	66	edl->rtype);
83e81961 BYTK	67	err = -EIO;
	68	goto out;
	69	}
	70
e5d6468f	71	if (soc_type >= QCA_WCN3991)
059924fd VLNG	72	memcpy(ver, edl->data + 1, sizeof(*ver));
	73	else
	74	memcpy(ver, &edl->data, sizeof(*ver));
83e81961	75
4942857b ZH	76	bt_dev_info(hdev, "QCA Product ID :0x%08x",
	77	le32_to_cpu(ver->product_id));
	78	bt_dev_info(hdev, "QCA SOC Version :0x%08x",
	79	le32_to_cpu(ver->soc_id));
	80	bt_dev_info(hdev, "QCA ROM Version :0x%08x",
	81	le16_to_cpu(ver->rom_ver));
	82	bt_dev_info(hdev, "QCA Patch Version:0x%08x",
	83	le16_to_cpu(ver->patch_ver));
83e81961	84
059924fd	85	if (ver->soc_id == 0 \|\| ver->rom_ver == 0)
aadebac4	86	err = -EILSEQ;
83e81961 BYTK	87
	88	out:
	89	kfree_skb(skb);
aadebac4 BG	90	if (err)
aadebac4 BG	91	bt_dev_err(hdev, "QCA Failed to get version (%d)", err);
83e81961 BYTK	92
	93	return err;
	94	}
ba493d4f	95	EXPORT_SYMBOL_GPL(qca_read_soc_version);
83e81961	96
ba493d4f	97	static int qca_send_reset(struct hci_dev *hdev)
83e81961 BYTK	98	{
	99	struct sk_buff *skb;
	100	int err;
	101
ba493d4f	102	bt_dev_dbg(hdev, "QCA HCI_RESET");
83e81961 BYTK	103
	104	skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
	105	if (IS_ERR(skb)) {
	106	err = PTR_ERR(skb);
ba493d4f	107	bt_dev_err(hdev, "QCA Reset failed (%d)", err);
83e81961 BYTK	108	return err;
	109	}
	110
	111	kfree_skb(skb);
	112
	113	return 0;
	114	}
	115
a2780889 HB	116	int qca_send_pre_shutdown_cmd(struct hci_dev *hdev)
	117	{
	118	struct sk_buff *skb;
	119	int err;
	120
	121	bt_dev_dbg(hdev, "QCA pre shutdown cmd");
	122
010376ab HB	123	skb = __hci_cmd_sync_ev(hdev, QCA_PRE_SHUTDOWN_CMD, 0,
	124	NULL, HCI_EV_CMD_COMPLETE, HCI_INIT_TIMEOUT);
	125
a2780889 HB	126	if (IS_ERR(skb)) {
	127	err = PTR_ERR(skb);
	128	bt_dev_err(hdev, "QCA preshutdown_cmd failed (%d)", err);
	129	return err;
	130	}
	131
	132	kfree_skb(skb);
	133
	134	return 0;
	135	}
	136	EXPORT_SYMBOL_GPL(qca_send_pre_shutdown_cmd);
	137
e303d124	138	static void qca_tlv_check_data(struct qca_fw_config *config,
b6388254	139	const struct firmware *fw, enum qca_btsoc_type soc_type)
83e81961 BYTK	140	{
	141	const u8 *data;
	142	u32 type_len;
	143	u16 tag_id, tag_len;
	144	int idx, length;
	145	struct tlv_type_hdr *tlv;
	146	struct tlv_type_patch *tlv_patch;
	147	struct tlv_type_nvm *tlv_nvm;
b6388254	148	uint8_t nvm_baud_rate = config->user_baud_rate;
83e81961 BYTK	149
	150	tlv = (struct tlv_type_hdr *)fw->data;
	151
	152	type_len = le32_to_cpu(tlv->type_len);
	153	length = (type_len >> 8) & 0x00ffffff;
	154
	155	BT_DBG("TLV Type\t\t : 0x%x", type_len & 0x000000ff);
	156	BT_DBG("Length\t\t : %d bytes", length);
	157
e303d124 BG	158	config->dnld_mode = QCA_SKIP_EVT_NONE;
e303d124 BG	159	config->dnld_type = QCA_SKIP_EVT_NONE;
6e03126a	160
83e81961 BYTK	161	switch (config->type) {
	162	case TLV_TYPE_PATCH:
	163	tlv_patch = (struct tlv_type_patch *)tlv->data;
6e03126a LP	164
	165	/* For Rome version 1.1 to 3.1, all segment commands
	166	* are acked by a vendor specific event (VSE).
	167	* For Rome >= 3.2, the download mode field indicates
	168	* if VSE is skipped by the controller.
	169	* In case VSE is skipped, only the last segment is acked.
	170	*/
	171	config->dnld_mode = tlv_patch->download_mode;
32646db8	172	config->dnld_type = config->dnld_mode;
6e03126a LP	173
6e03126a LP	174	BT_DBG("Total Length : %d bytes",
83e81961	175	le32_to_cpu(tlv_patch->total_size));
6e03126a	176	BT_DBG("Patch Data Length : %d bytes",
83e81961 BYTK	177	le32_to_cpu(tlv_patch->data_length));
	178	BT_DBG("Signing Format Version : 0x%x",
	179	tlv_patch->format_version);
6e03126a	180	BT_DBG("Signature Algorithm : 0x%x",
83e81961	181	tlv_patch->signature);
6e03126a LP	182	BT_DBG("Download mode : 0x%x",
	183	tlv_patch->download_mode);
	184	BT_DBG("Reserved : 0x%x",
	185	tlv_patch->reserved1);
	186	BT_DBG("Product ID : 0x%04x",
83e81961	187	le16_to_cpu(tlv_patch->product_id));
6e03126a	188	BT_DBG("Rom Build Version : 0x%04x",
83e81961	189	le16_to_cpu(tlv_patch->rom_build));
6e03126a	190	BT_DBG("Patch Version : 0x%04x",
83e81961	191	le16_to_cpu(tlv_patch->patch_version));
6e03126a	192	BT_DBG("Reserved : 0x%x",
83e81961	193	le16_to_cpu(tlv_patch->reserved2));
6e03126a	194	BT_DBG("Patch Entry Address : 0x%x",
83e81961 BYTK	195	le32_to_cpu(tlv_patch->entry));
	196	break;
	197
	198	case TLV_TYPE_NVM:
	199	idx = 0;
	200	data = tlv->data;
	201	while (idx < length) {
	202	tlv_nvm = (struct tlv_type_nvm *)(data + idx);
	203
	204	tag_id = le16_to_cpu(tlv_nvm->tag_id);
	205	tag_len = le16_to_cpu(tlv_nvm->tag_len);
	206
	207	/* Update NVM tags as needed */
	208	switch (tag_id) {
	209	case EDL_TAG_ID_HCI:
	210	/* HCI transport layer parameters
	211	* enabling software inband sleep
	212	* onto controller side.
	213	*/
	214	tlv_nvm->data[0] \|= 0x80;
	215
	216	/* UART Baud Rate */
e5d6468f	217	if (soc_type >= QCA_WCN3991)
b6388254 RL	218	tlv_nvm->data[1] = nvm_baud_rate;
	219	else
	220	tlv_nvm->data[2] = nvm_baud_rate;
83e81961 BYTK	221
	222	break;
	223
	224	case EDL_TAG_ID_DEEP_SLEEP:
	225	/* Sleep enable mask
	226	* enabling deep sleep feature on controller.
	227	*/
	228	tlv_nvm->data[0] \|= 0x01;
	229
	230	break;
	231	}
	232
	233	idx += (sizeof(u16) + sizeof(u16) + 8 + tag_len);
	234	}
	235	break;
	236
	237	default:
	238	BT_ERR("Unknown TLV type %d", config->type);
	239	break;
	240	}
	241	}
	242
ba493d4f	243	static int qca_tlv_send_segment(struct hci_dev *hdev, int seg_size,
7d250a06 BG	244	const u8 *data, enum qca_tlv_dnld_mode mode,
7d250a06 BG	245	enum qca_btsoc_type soc_type)
83e81961 BYTK	246	{
	247	struct sk_buff *skb;
	248	struct edl_event_hdr *edl;
	249	struct tlv_seg_resp *tlv_resp;
	250	u8 cmd[MAX_SIZE_PER_TLV_SEGMENT + 2];
	251	int err = 0;
7d250a06 BG	252	u8 event_type = HCI_EV_VENDOR;
	253	u8 rlen = (sizeof(edl) + sizeof(tlv_resp));
	254	u8 rtype = EDL_TVL_DNLD_RES_EVT;
83e81961	255
83e81961 BYTK	256	cmd[0] = EDL_PATCH_TLV_REQ_CMD;
	257	cmd[1] = seg_size;
	258	memcpy(cmd + 2, data, seg_size);
	259
e303d124	260	if (mode == QCA_SKIP_EVT_VSE_CC \|\| mode == QCA_SKIP_EVT_VSE)
6e03126a LP	261	return __hci_cmd_send(hdev, EDL_PATCH_CMD_OPCODE, seg_size + 2,
	262	cmd);
	263
7d250a06 BG	264	/* Unlike other SoC's sending version command response as payload to
	265	* VSE event. WCN3991 sends version command response as a payload to
	266	* command complete event.
	267	*/
e5d6468f	268	if (soc_type >= QCA_WCN3991) {
7d250a06 BG	269	event_type = 0;
	270	rlen = sizeof(*edl);
	271	rtype = EDL_PATCH_TLV_REQ_CMD;
	272	}
	273
83e81961	274	skb = __hci_cmd_sync_ev(hdev, EDL_PATCH_CMD_OPCODE, seg_size + 2, cmd,
7d250a06	275	event_type, HCI_INIT_TIMEOUT);
83e81961 BYTK	276	if (IS_ERR(skb)) {
83e81961 BYTK	277	err = PTR_ERR(skb);
ba493d4f	278	bt_dev_err(hdev, "QCA Failed to send TLV segment (%d)", err);
83e81961 BYTK	279	return err;
	280	}
	281
7d250a06	282	if (skb->len != rlen) {
ba493d4f	283	bt_dev_err(hdev, "QCA TLV response size mismatch");
83e81961 BYTK	284	err = -EILSEQ;
	285	goto out;
	286	}
	287
	288	edl = (struct edl_event_hdr *)(skb->data);
0676cab4	289	if (!edl) {
ba493d4f	290	bt_dev_err(hdev, "TLV with no header");
83e81961 BYTK	291	err = -EILSEQ;
	292	goto out;
	293	}
	294
7d250a06 BG	295	if (edl->cresp != EDL_CMD_REQ_RES_EVT \|\| edl->rtype != rtype) {
	296	bt_dev_err(hdev, "QCA TLV with error stat 0x%x rtype 0x%x",
	297	edl->cresp, edl->rtype);
	298	err = -EIO;
	299	}
83e81961	300
e5d6468f	301	if (soc_type >= QCA_WCN3991)
7d250a06 BG	302	goto out;
	303
	304	tlv_resp = (struct tlv_seg_resp *)(edl->data);
	305	if (tlv_resp->result) {
ba493d4f BG	306	bt_dev_err(hdev, "QCA TLV with error stat 0x%x rtype 0x%x (0x%x)",
ba493d4f BG	307	edl->cresp, edl->rtype, tlv_resp->result);
83e81961 BYTK	308	}
	309
	310	out:
	311	kfree_skb(skb);
	312
	313	return err;
	314	}
	315
32646db8 BG	316	static int qca_inject_cmd_complete_event(struct hci_dev *hdev)
	317	{
	318	struct hci_event_hdr *hdr;
	319	struct hci_ev_cmd_complete *evt;
	320	struct sk_buff *skb;
	321
	322	skb = bt_skb_alloc(sizeof(hdr) + sizeof(evt) + 1, GFP_KERNEL);
	323	if (!skb)
	324	return -ENOMEM;
	325
	326	hdr = skb_put(skb, sizeof(*hdr));
	327	hdr->evt = HCI_EV_CMD_COMPLETE;
	328	hdr->plen = sizeof(*evt) + 1;
	329
	330	evt = skb_put(skb, sizeof(*evt));
	331	evt->ncmd = 1;
2fde6afb	332	evt->opcode = cpu_to_le16(QCA_HCI_CC_OPCODE);
32646db8 BG	333
	334	skb_put_u8(skb, QCA_HCI_CC_SUCCESS);
	335
	336	hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
	337
	338	return hci_recv_frame(hdev, skb);
	339	}
	340
ba493d4f	341	static int qca_download_firmware(struct hci_dev *hdev,
7d250a06 BG	342	struct qca_fw_config *config,
7d250a06 BG	343	enum qca_btsoc_type soc_type)
83e81961 BYTK	344	{
83e81961 BYTK	345	const struct firmware *fw;
6e03126a LP	346	const u8 *segment;
6e03126a LP	347	int ret, remain, i = 0;
83e81961	348
ba493d4f	349	bt_dev_info(hdev, "QCA Downloading %s", config->fwname);
83e81961 BYTK	350
	351	ret = request_firmware(&fw, config->fwname, &hdev->dev);
	352	if (ret) {
ba493d4f BG	353	bt_dev_err(hdev, "QCA Failed to request file: %s (%d)",
ba493d4f BG	354	config->fwname, ret);
83e81961 BYTK	355	return ret;
	356	}
	357
b6388254	358	qca_tlv_check_data(config, fw, soc_type);
83e81961	359
6e03126a LP	360	segment = fw->data;
	361	remain = fw->size;
	362	while (remain > 0) {
	363	int segsize = min(MAX_SIZE_PER_TLV_SEGMENT, remain);
	364
	365	bt_dev_dbg(hdev, "Send segment %d, size %d", i++, segsize);
	366
	367	remain -= segsize;
	368	/* The last segment is always acked regardless download mode */
	369	if (!remain \|\| segsize < MAX_SIZE_PER_TLV_SEGMENT)
e303d124	370	config->dnld_mode = QCA_SKIP_EVT_NONE;
6e03126a	371
ba493d4f	372	ret = qca_tlv_send_segment(hdev, segsize, segment,
7d250a06	373	config->dnld_mode, soc_type);
6e03126a	374	if (ret)
32646db8	375	goto out;
6e03126a LP	376
6e03126a LP	377	segment += segsize;
83e81961 BYTK	378	}
83e81961 BYTK	379
32646db8 BG	380	/* Latest qualcomm chipsets are not sending a command complete event
	381	* for every fw packet sent. They only respond with a vendor specific
	382	* event for the last packet. This optimization in the chip will
	383	* decrease the BT in initialization time. Here we will inject a command
	384	* complete event to avoid a command timeout error message.
	385	*/
e303d124 BG	386	if (config->dnld_type == QCA_SKIP_EVT_VSE_CC \|\|
e303d124 BG	387	config->dnld_type == QCA_SKIP_EVT_VSE)
c7c5ae29	388	ret = qca_inject_cmd_complete_event(hdev);
32646db8 BG	389
32646db8 BG	390	out:
83e81961 BYTK	391	release_firmware(fw);
	392
	393	return ret;
	394	}
	395
590deccf BG	396	static int qca_disable_soc_logging(struct hci_dev *hdev)
	397	{
	398	struct sk_buff *skb;
	399	u8 cmd[2];
	400	int err;
	401
	402	cmd[0] = QCA_DISABLE_LOGGING_SUB_OP;
	403	cmd[1] = 0x00;
	404	skb = __hci_cmd_sync_ev(hdev, QCA_DISABLE_LOGGING, sizeof(cmd), cmd,
	405	HCI_EV_CMD_COMPLETE, HCI_INIT_TIMEOUT);
	406	if (IS_ERR(skb)) {
	407	err = PTR_ERR(skb);
	408	bt_dev_err(hdev, "QCA Failed to disable soc logging(%d)", err);
	409	return err;
	410	}
	411
	412	kfree_skb(skb);
	413
	414	return 0;
	415	}
	416
83e81961 BYTK	417	int qca_set_bdaddr_rome(struct hci_dev hdev, const bdaddr_t bdaddr)
	418	{
	419	struct sk_buff *skb;
	420	u8 cmd[9];
	421	int err;
	422
	423	cmd[0] = EDL_NVM_ACCESS_SET_REQ_CMD;
	424	cmd[1] = 0x02; /* TAG ID */
	425	cmd[2] = sizeof(bdaddr_t); /* size */
	426	memcpy(cmd + 3, bdaddr, sizeof(bdaddr_t));
	427	skb = __hci_cmd_sync_ev(hdev, EDL_NVM_ACCESS_OPCODE, sizeof(cmd), cmd,
e4cc5a18	428	HCI_EV_VENDOR, HCI_INIT_TIMEOUT);
83e81961 BYTK	429	if (IS_ERR(skb)) {
83e81961 BYTK	430	err = PTR_ERR(skb);
ba493d4f	431	bt_dev_err(hdev, "QCA Change address command failed (%d)", err);
83e81961 BYTK	432	return err;
	433	}
	434
	435	kfree_skb(skb);
	436
	437	return 0;
	438	}
	439	EXPORT_SYMBOL_GPL(qca_set_bdaddr_rome);
	440
aadebac4	441	int qca_uart_setup(struct hci_dev *hdev, uint8_t baudrate,
059924fd	442	enum qca_btsoc_type soc_type, struct qca_btsoc_version ver,
99c905c6	443	const char *firmware_name)
83e81961	444	{
e303d124	445	struct qca_fw_config config;
83e81961	446	int err;
523760b7	447	u8 rom_ver = 0;
059924fd	448	u32 soc_ver;
83e81961	449
ba493d4f	450	bt_dev_dbg(hdev, "QCA setup on UART");
83e81961	451
059924fd VLNG	452	soc_ver = get_soc_ver(ver.soc_id, ver.rom_ver);
	453
	454	bt_dev_info(hdev, "QCA controller version 0x%08x", soc_ver);
	455
83e81961 BYTK	456	config.user_baud_rate = baudrate;
83e81961 BYTK	457
83e81961 BYTK	458	/* Download rampatch file */
83e81961 BYTK	459	config.type = TLV_TYPE_PATCH;
523760b7	460	if (qca_is_wcn399x(soc_type)) {
4219d468 BG	461	/* Firmware files to download are based on ROM version.
	462	* ROM version is derived from last two bytes of soc_ver.
	463	*/
	464	rom_ver = ((soc_ver & 0x00000f00) >> 0x04) \|
	465	(soc_ver & 0x0000000f);
	466	snprintf(config.fwname, sizeof(config.fwname),
	467	"qca/crbtfw%02x.tlv", rom_ver);
e5d6468f RL	468	} else if (soc_type == QCA_QCA6390) {
	469	rom_ver = ((soc_ver & 0x00000f00) >> 0x04) \|
	470	(soc_ver & 0x0000000f);
	471	snprintf(config.fwname, sizeof(config.fwname),
	472	"qca/htbtfw%02x.tlv", rom_ver);
4219d468 BG	473	} else {
	474	snprintf(config.fwname, sizeof(config.fwname),
	475	"qca/rampatch_%08x.bin", soc_ver);
	476	}
	477
7d250a06	478	err = qca_download_firmware(hdev, &config, soc_type);
83e81961	479	if (err < 0) {
ba493d4f	480	bt_dev_err(hdev, "QCA Failed to download patch (%d)", err);
83e81961 BYTK	481	return err;
	482	}
	483
8059ba0b MK	484	/* Give the controller some time to get ready to receive the NVM */
	485	msleep(10);
	486
83e81961 BYTK	487	/* Download NVM configuration */
83e81961 BYTK	488	config.type = TLV_TYPE_NVM;
99c905c6 RL	489	if (firmware_name)
	490	snprintf(config.fwname, sizeof(config.fwname),
	491	"qca/%s", firmware_name);
059924fd VLNG	492	else if (qca_is_wcn399x(soc_type)) {
	493	if (ver.soc_id == QCA_WCN3991_SOC_ID) {
	494	snprintf(config.fwname, sizeof(config.fwname),
	495	"qca/crnv%02xu.bin", rom_ver);
	496	} else {
	497	snprintf(config.fwname, sizeof(config.fwname),
	498	"qca/crnv%02x.bin", rom_ver);
	499	}
	500	}
e5d6468f RL	501	else if (soc_type == QCA_QCA6390)
	502	snprintf(config.fwname, sizeof(config.fwname),
	503	"qca/htnv%02x.bin", rom_ver);
4219d468 BG	504	else
	505	snprintf(config.fwname, sizeof(config.fwname),
	506	"qca/nvm_%08x.bin", soc_ver);
	507
7d250a06	508	err = qca_download_firmware(hdev, &config, soc_type);
83e81961	509	if (err < 0) {
ba493d4f	510	bt_dev_err(hdev, "QCA Failed to download NVM (%d)", err);
83e81961 BYTK	511	return err;
	512	}
	513
590deccf BG	514	if (soc_type >= QCA_WCN3991) {
	515	err = qca_disable_soc_logging(hdev);
	516	if (err < 0)
	517	return err;
	518	}
	519
83e81961	520	/* Perform HCI reset */
ba493d4f	521	err = qca_send_reset(hdev);
83e81961	522	if (err < 0) {
ba493d4f	523	bt_dev_err(hdev, "QCA Failed to run HCI_RESET (%d)", err);
83e81961 BYTK	524	return err;
	525	}
	526
ba493d4f	527	bt_dev_info(hdev, "QCA setup on UART is completed");
83e81961 BYTK	528
	529	return 0;
	530	}
ba493d4f	531	EXPORT_SYMBOL_GPL(qca_uart_setup);
83e81961	532
5c0a1001 BG	533	int qca_set_bdaddr(struct hci_dev hdev, const bdaddr_t bdaddr)
	534	{
	535	struct sk_buff *skb;
	536	int err;
	537
	538	skb = __hci_cmd_sync_ev(hdev, EDL_WRITE_BD_ADDR_OPCODE, 6, bdaddr,
	539	HCI_EV_VENDOR, HCI_INIT_TIMEOUT);
	540	if (IS_ERR(skb)) {
	541	err = PTR_ERR(skb);
	542	bt_dev_err(hdev, "QCA Change address cmd failed (%d)", err);
	543	return err;
	544	}
	545
	546	kfree_skb(skb);
	547
	548	return 0;
	549	}
	550	EXPORT_SYMBOL_GPL(qca_set_bdaddr);
	551
523760b7	552
83e81961 BYTK	553	MODULE_AUTHOR("Ben Young Tae Kim <ytkim@qca.qualcomm.com>");
	554	MODULE_DESCRIPTION("Bluetooth support for Qualcomm Atheros family ver " VERSION);
	555	MODULE_VERSION(VERSION);
	556	MODULE_LICENSE("GPL");