[mirror_ubuntu-focal-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)
{
	struct sk_buff *skb;
	struct edl_event_hdr *edl;
	struct rome_version *ver;
	char cmd;
	int err = 0;

	bt_dev_dbg(hdev, "QCA Version Request");

	cmd = EDL_PATCH_VER_REQ_CMD;
	skb = __hci_cmd_sync_ev(hdev, EDL_PATCH_CMD_OPCODE, EDL_PATCH_CMD_LEN,
				&cmd, HCI_EV_VENDOR, 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 != sizeof(*edl) + sizeof(*ver)) {
		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 != EDL_APP_VER_RES_EVT) {
		bt_dev_err(hdev, "QCA Wrong packet received %d %d", edl->cresp,
			   edl->rtype);
		err = -EIO;
		goto out;
	}

	ver = (struct rome_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->rome_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->rome_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(hdev, QCA_PRE_SHUTDOWN_CMD, 0,
				NULL, 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 rome_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 = ROME_SKIP_EVT_NONE;
	config->dnld_type = ROME_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 rome_tlv_dnld_mode mode)
{
	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;

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

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

	skb = __hci_cmd_sync_ev(hdev, EDL_PATCH_CMD_OPCODE, seg_size + 2, cmd,
				HCI_EV_VENDOR, 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 != sizeof(*edl) + sizeof(*tlv_resp)) {
		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;
	}

	tlv_resp = (struct tlv_seg_resp *)(edl->data);

	if (edl->cresp != EDL_CMD_REQ_RES_EVT ||
	    edl->rtype != EDL_TVL_DNLD_RES_EVT || tlv_resp->result != 0x00) {
		bt_dev_err(hdev, "QCA TLV with error stat 0x%x rtype 0x%x (0x%x)",
			   edl->cresp, edl->rtype, tlv_resp->result);
		err = -EIO;
	}

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 rome_config *config)
{
	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 = ROME_SKIP_EVT_NONE;

		ret = qca_tlv_send_segment(hdev, segsize, segment,
					    config->dnld_mode);
		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 == ROME_SKIP_EVT_VSE_CC ||
	    config->dnld_type == ROME_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 rome_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);
	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);
	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
ba493d4f	17	int qca_read_soc_version(struct hci_dev hdev, u32 soc_version)
83e81961 BYTK	18	{
	19	struct sk_buff *skb;
	20	struct edl_event_hdr *edl;
	21	struct rome_version *ver;
	22	char cmd;
	23	int err = 0;
	24
ba493d4f	25	bt_dev_dbg(hdev, "QCA Version Request");
83e81961 BYTK	26
	27	cmd = EDL_PATCH_VER_REQ_CMD;
	28	skb = __hci_cmd_sync_ev(hdev, EDL_PATCH_CMD_OPCODE, EDL_PATCH_CMD_LEN,
e4cc5a18	29	&cmd, HCI_EV_VENDOR, HCI_INIT_TIMEOUT);
83e81961 BYTK	30	if (IS_ERR(skb)) {
83e81961 BYTK	31	err = PTR_ERR(skb);
ba493d4f BG	32	bt_dev_err(hdev, "Reading QCA version information failed (%d)",
ba493d4f BG	33	err);
83e81961 BYTK	34	return err;
	35	}
	36
	37	if (skb->len != sizeof(edl) + sizeof(ver)) {
ba493d4f	38	bt_dev_err(hdev, "QCA Version size mismatch len %d", skb->len);
83e81961 BYTK	39	err = -EILSEQ;
	40	goto out;
	41	}
	42
	43	edl = (struct edl_event_hdr *)(skb->data);
0676cab4	44	if (!edl) {
ba493d4f	45	bt_dev_err(hdev, "QCA TLV with no header");
83e81961 BYTK	46	err = -EILSEQ;
	47	goto out;
	48	}
	49
	50	if (edl->cresp != EDL_CMD_REQ_RES_EVT \|\|
	51	edl->rtype != EDL_APP_VER_RES_EVT) {
ba493d4f BG	52	bt_dev_err(hdev, "QCA Wrong packet received %d %d", edl->cresp,
ba493d4f BG	53	edl->rtype);
83e81961 BYTK	54	err = -EIO;
	55	goto out;
	56	}
	57
	58	ver = (struct rome_version *)(edl->data);
	59
	60	BT_DBG("%s: Product:0x%08x", hdev->name, le32_to_cpu(ver->product_id));
	61	BT_DBG("%s: Patch :0x%08x", hdev->name, le16_to_cpu(ver->patch_ver));
	62	BT_DBG("%s: ROM :0x%08x", hdev->name, le16_to_cpu(ver->rome_ver));
	63	BT_DBG("%s: SOC :0x%08x", hdev->name, le32_to_cpu(ver->soc_id));
	64
ba493d4f	65	/* QCA chipset version can be decided by patch and SoC
83e81961 BYTK	66	* version, combination with upper 2 bytes from SoC
	67	* and lower 2 bytes from patch will be used.
	68	*/
ba493d4f	69	*soc_version = (le32_to_cpu(ver->soc_id) << 16) \|
2193a980	70	(le16_to_cpu(ver->rome_ver) & 0x0000ffff);
aadebac4 BG	71	if (*soc_version == 0)
aadebac4 BG	72	err = -EILSEQ;
83e81961 BYTK	73
	74	out:
	75	kfree_skb(skb);
aadebac4 BG	76	if (err)
aadebac4 BG	77	bt_dev_err(hdev, "QCA Failed to get version (%d)", err);
83e81961 BYTK	78
	79	return err;
	80	}
ba493d4f	81	EXPORT_SYMBOL_GPL(qca_read_soc_version);
83e81961	82
ba493d4f	83	static int qca_send_reset(struct hci_dev *hdev)
83e81961 BYTK	84	{
	85	struct sk_buff *skb;
	86	int err;
	87
ba493d4f	88	bt_dev_dbg(hdev, "QCA HCI_RESET");
83e81961 BYTK	89
	90	skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
	91	if (IS_ERR(skb)) {
	92	err = PTR_ERR(skb);
ba493d4f	93	bt_dev_err(hdev, "QCA Reset failed (%d)", err);
83e81961 BYTK	94	return err;
	95	}
	96
	97	kfree_skb(skb);
	98
	99	return 0;
	100	}
	101
a2780889 HB	102	int qca_send_pre_shutdown_cmd(struct hci_dev *hdev)
	103	{
	104	struct sk_buff *skb;
	105	int err;
	106
	107	bt_dev_dbg(hdev, "QCA pre shutdown cmd");
	108
	109	skb = __hci_cmd_sync(hdev, QCA_PRE_SHUTDOWN_CMD, 0,
	110	NULL, HCI_INIT_TIMEOUT);
	111	if (IS_ERR(skb)) {
	112	err = PTR_ERR(skb);
	113	bt_dev_err(hdev, "QCA preshutdown_cmd failed (%d)", err);
	114	return err;
	115	}
	116
	117	kfree_skb(skb);
	118
	119	return 0;
	120	}
	121	EXPORT_SYMBOL_GPL(qca_send_pre_shutdown_cmd);
	122
ba493d4f	123	static void qca_tlv_check_data(struct rome_config *config,
83e81961 BYTK	124	const struct firmware *fw)
	125	{
	126	const u8 *data;
	127	u32 type_len;
	128	u16 tag_id, tag_len;
	129	int idx, length;
	130	struct tlv_type_hdr *tlv;
	131	struct tlv_type_patch *tlv_patch;
	132	struct tlv_type_nvm *tlv_nvm;
	133
	134	tlv = (struct tlv_type_hdr *)fw->data;
	135
	136	type_len = le32_to_cpu(tlv->type_len);
	137	length = (type_len >> 8) & 0x00ffffff;
	138
	139	BT_DBG("TLV Type\t\t : 0x%x", type_len & 0x000000ff);
	140	BT_DBG("Length\t\t : %d bytes", length);
	141
6e03126a	142	config->dnld_mode = ROME_SKIP_EVT_NONE;
12072a68	143	config->dnld_type = ROME_SKIP_EVT_NONE;
6e03126a	144
83e81961 BYTK	145	switch (config->type) {
	146	case TLV_TYPE_PATCH:
	147	tlv_patch = (struct tlv_type_patch *)tlv->data;
6e03126a LP	148
	149	/* For Rome version 1.1 to 3.1, all segment commands
	150	* are acked by a vendor specific event (VSE).
	151	* For Rome >= 3.2, the download mode field indicates
	152	* if VSE is skipped by the controller.
	153	* In case VSE is skipped, only the last segment is acked.
	154	*/
	155	config->dnld_mode = tlv_patch->download_mode;
32646db8	156	config->dnld_type = config->dnld_mode;
6e03126a LP	157
6e03126a LP	158	BT_DBG("Total Length : %d bytes",
83e81961	159	le32_to_cpu(tlv_patch->total_size));
6e03126a	160	BT_DBG("Patch Data Length : %d bytes",
83e81961 BYTK	161	le32_to_cpu(tlv_patch->data_length));
	162	BT_DBG("Signing Format Version : 0x%x",
	163	tlv_patch->format_version);
6e03126a	164	BT_DBG("Signature Algorithm : 0x%x",
83e81961	165	tlv_patch->signature);
6e03126a LP	166	BT_DBG("Download mode : 0x%x",
	167	tlv_patch->download_mode);
	168	BT_DBG("Reserved : 0x%x",
	169	tlv_patch->reserved1);
	170	BT_DBG("Product ID : 0x%04x",
83e81961	171	le16_to_cpu(tlv_patch->product_id));
6e03126a	172	BT_DBG("Rom Build Version : 0x%04x",
83e81961	173	le16_to_cpu(tlv_patch->rom_build));
6e03126a	174	BT_DBG("Patch Version : 0x%04x",
83e81961	175	le16_to_cpu(tlv_patch->patch_version));
6e03126a	176	BT_DBG("Reserved : 0x%x",
83e81961	177	le16_to_cpu(tlv_patch->reserved2));
6e03126a	178	BT_DBG("Patch Entry Address : 0x%x",
83e81961 BYTK	179	le32_to_cpu(tlv_patch->entry));
	180	break;
	181
	182	case TLV_TYPE_NVM:
	183	idx = 0;
	184	data = tlv->data;
	185	while (idx < length) {
	186	tlv_nvm = (struct tlv_type_nvm *)(data + idx);
	187
	188	tag_id = le16_to_cpu(tlv_nvm->tag_id);
	189	tag_len = le16_to_cpu(tlv_nvm->tag_len);
	190
	191	/* Update NVM tags as needed */
	192	switch (tag_id) {
	193	case EDL_TAG_ID_HCI:
	194	/* HCI transport layer parameters
	195	* enabling software inband sleep
	196	* onto controller side.
	197	*/
	198	tlv_nvm->data[0] \|= 0x80;
	199
	200	/* UART Baud Rate */
	201	tlv_nvm->data[2] = config->user_baud_rate;
	202
	203	break;
	204
	205	case EDL_TAG_ID_DEEP_SLEEP:
	206	/* Sleep enable mask
	207	* enabling deep sleep feature on controller.
	208	*/
	209	tlv_nvm->data[0] \|= 0x01;
	210
	211	break;
	212	}
	213
	214	idx += (sizeof(u16) + sizeof(u16) + 8 + tag_len);
	215	}
	216	break;
	217
	218	default:
	219	BT_ERR("Unknown TLV type %d", config->type);
	220	break;
	221	}
	222	}
	223
ba493d4f	224	static int qca_tlv_send_segment(struct hci_dev *hdev, int seg_size,
6e03126a	225	const u8 *data, enum rome_tlv_dnld_mode mode)
83e81961 BYTK	226	{
	227	struct sk_buff *skb;
	228	struct edl_event_hdr *edl;
	229	struct tlv_seg_resp *tlv_resp;
	230	u8 cmd[MAX_SIZE_PER_TLV_SEGMENT + 2];
	231	int err = 0;
	232
83e81961 BYTK	233	cmd[0] = EDL_PATCH_TLV_REQ_CMD;
	234	cmd[1] = seg_size;
	235	memcpy(cmd + 2, data, seg_size);
	236
6e03126a LP	237	if (mode == ROME_SKIP_EVT_VSE_CC \|\| mode == ROME_SKIP_EVT_VSE)
	238	return __hci_cmd_send(hdev, EDL_PATCH_CMD_OPCODE, seg_size + 2,
	239	cmd);
	240
83e81961	241	skb = __hci_cmd_sync_ev(hdev, EDL_PATCH_CMD_OPCODE, seg_size + 2, cmd,
e4cc5a18	242	HCI_EV_VENDOR, HCI_INIT_TIMEOUT);
83e81961 BYTK	243	if (IS_ERR(skb)) {
83e81961 BYTK	244	err = PTR_ERR(skb);
ba493d4f	245	bt_dev_err(hdev, "QCA Failed to send TLV segment (%d)", err);
83e81961 BYTK	246	return err;
	247	}
	248
	249	if (skb->len != sizeof(edl) + sizeof(tlv_resp)) {
ba493d4f	250	bt_dev_err(hdev, "QCA TLV response size mismatch");
83e81961 BYTK	251	err = -EILSEQ;
	252	goto out;
	253	}
	254
	255	edl = (struct edl_event_hdr *)(skb->data);
0676cab4	256	if (!edl) {
ba493d4f	257	bt_dev_err(hdev, "TLV with no header");
83e81961 BYTK	258	err = -EILSEQ;
	259	goto out;
	260	}
	261
	262	tlv_resp = (struct tlv_seg_resp *)(edl->data);
	263
	264	if (edl->cresp != EDL_CMD_REQ_RES_EVT \|\|
	265	edl->rtype != EDL_TVL_DNLD_RES_EVT \|\| tlv_resp->result != 0x00) {
ba493d4f BG	266	bt_dev_err(hdev, "QCA TLV with error stat 0x%x rtype 0x%x (0x%x)",
ba493d4f BG	267	edl->cresp, edl->rtype, tlv_resp->result);
83e81961 BYTK	268	err = -EIO;
	269	}
	270
	271	out:
	272	kfree_skb(skb);
	273
	274	return err;
	275	}
	276
32646db8 BG	277	static int qca_inject_cmd_complete_event(struct hci_dev *hdev)
	278	{
	279	struct hci_event_hdr *hdr;
	280	struct hci_ev_cmd_complete *evt;
	281	struct sk_buff *skb;
	282
	283	skb = bt_skb_alloc(sizeof(hdr) + sizeof(evt) + 1, GFP_KERNEL);
	284	if (!skb)
	285	return -ENOMEM;
	286
	287	hdr = skb_put(skb, sizeof(*hdr));
	288	hdr->evt = HCI_EV_CMD_COMPLETE;
	289	hdr->plen = sizeof(*evt) + 1;
	290
	291	evt = skb_put(skb, sizeof(*evt));
	292	evt->ncmd = 1;
2fde6afb	293	evt->opcode = cpu_to_le16(QCA_HCI_CC_OPCODE);
32646db8 BG	294
	295	skb_put_u8(skb, QCA_HCI_CC_SUCCESS);
	296
	297	hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
	298
	299	return hci_recv_frame(hdev, skb);
	300	}
	301
ba493d4f	302	static int qca_download_firmware(struct hci_dev *hdev,
83e81961 BYTK	303	struct rome_config *config)
	304	{
	305	const struct firmware *fw;
6e03126a LP	306	const u8 *segment;
6e03126a LP	307	int ret, remain, i = 0;
83e81961	308
ba493d4f	309	bt_dev_info(hdev, "QCA Downloading %s", config->fwname);
83e81961 BYTK	310
	311	ret = request_firmware(&fw, config->fwname, &hdev->dev);
	312	if (ret) {
ba493d4f BG	313	bt_dev_err(hdev, "QCA Failed to request file: %s (%d)",
ba493d4f BG	314	config->fwname, ret);
83e81961 BYTK	315	return ret;
	316	}
	317
ba493d4f	318	qca_tlv_check_data(config, fw);
83e81961	319
6e03126a LP	320	segment = fw->data;
	321	remain = fw->size;
	322	while (remain > 0) {
	323	int segsize = min(MAX_SIZE_PER_TLV_SEGMENT, remain);
	324
	325	bt_dev_dbg(hdev, "Send segment %d, size %d", i++, segsize);
	326
	327	remain -= segsize;
	328	/* The last segment is always acked regardless download mode */
	329	if (!remain \|\| segsize < MAX_SIZE_PER_TLV_SEGMENT)
	330	config->dnld_mode = ROME_SKIP_EVT_NONE;
	331
ba493d4f	332	ret = qca_tlv_send_segment(hdev, segsize, segment,
6e03126a LP	333	config->dnld_mode);
6e03126a LP	334	if (ret)
32646db8	335	goto out;
6e03126a LP	336
6e03126a LP	337	segment += segsize;
83e81961 BYTK	338	}
83e81961 BYTK	339
32646db8 BG	340	/* Latest qualcomm chipsets are not sending a command complete event
	341	* for every fw packet sent. They only respond with a vendor specific
	342	* event for the last packet. This optimization in the chip will
	343	* decrease the BT in initialization time. Here we will inject a command
	344	* complete event to avoid a command timeout error message.
	345	*/
	346	if (config->dnld_type == ROME_SKIP_EVT_VSE_CC \|\|
	347	config->dnld_type == ROME_SKIP_EVT_VSE)
c7c5ae29	348	ret = qca_inject_cmd_complete_event(hdev);
32646db8 BG	349
32646db8 BG	350	out:
83e81961 BYTK	351	release_firmware(fw);
	352
	353	return ret;
	354	}
	355
	356	int qca_set_bdaddr_rome(struct hci_dev hdev, const bdaddr_t bdaddr)
	357	{
	358	struct sk_buff *skb;
	359	u8 cmd[9];
	360	int err;
	361
	362	cmd[0] = EDL_NVM_ACCESS_SET_REQ_CMD;
	363	cmd[1] = 0x02; /* TAG ID */
	364	cmd[2] = sizeof(bdaddr_t); /* size */
	365	memcpy(cmd + 3, bdaddr, sizeof(bdaddr_t));
	366	skb = __hci_cmd_sync_ev(hdev, EDL_NVM_ACCESS_OPCODE, sizeof(cmd), cmd,
e4cc5a18	367	HCI_EV_VENDOR, HCI_INIT_TIMEOUT);
83e81961 BYTK	368	if (IS_ERR(skb)) {
83e81961 BYTK	369	err = PTR_ERR(skb);
ba493d4f	370	bt_dev_err(hdev, "QCA Change address command failed (%d)", err);
83e81961 BYTK	371	return err;
	372	}
	373
	374	kfree_skb(skb);
	375
	376	return 0;
	377	}
	378	EXPORT_SYMBOL_GPL(qca_set_bdaddr_rome);
	379
aadebac4	380	int qca_uart_setup(struct hci_dev *hdev, uint8_t baudrate,
99c905c6 RL	381	enum qca_btsoc_type soc_type, u32 soc_ver,
99c905c6 RL	382	const char *firmware_name)
83e81961	383	{
83e81961 BYTK	384	struct rome_config config;
83e81961 BYTK	385	int err;
523760b7	386	u8 rom_ver = 0;
83e81961	387
ba493d4f	388	bt_dev_dbg(hdev, "QCA setup on UART");
83e81961 BYTK	389
	390	config.user_baud_rate = baudrate;
	391
83e81961 BYTK	392	/* Download rampatch file */
83e81961 BYTK	393	config.type = TLV_TYPE_PATCH;
523760b7	394	if (qca_is_wcn399x(soc_type)) {
4219d468 BG	395	/* Firmware files to download are based on ROM version.
	396	* ROM version is derived from last two bytes of soc_ver.
	397	*/
	398	rom_ver = ((soc_ver & 0x00000f00) >> 0x04) \|
	399	(soc_ver & 0x0000000f);
	400	snprintf(config.fwname, sizeof(config.fwname),
	401	"qca/crbtfw%02x.tlv", rom_ver);
	402	} else {
	403	snprintf(config.fwname, sizeof(config.fwname),
	404	"qca/rampatch_%08x.bin", soc_ver);
	405	}
	406
ba493d4f	407	err = qca_download_firmware(hdev, &config);
83e81961	408	if (err < 0) {
ba493d4f	409	bt_dev_err(hdev, "QCA Failed to download patch (%d)", err);
83e81961 BYTK	410	return err;
	411	}
	412
8059ba0b MK	413	/* Give the controller some time to get ready to receive the NVM */
	414	msleep(10);
	415
83e81961 BYTK	416	/* Download NVM configuration */
83e81961 BYTK	417	config.type = TLV_TYPE_NVM;
99c905c6 RL	418	if (firmware_name)
	419	snprintf(config.fwname, sizeof(config.fwname),
	420	"qca/%s", firmware_name);
	421	else if (qca_is_wcn399x(soc_type))
4219d468 BG	422	snprintf(config.fwname, sizeof(config.fwname),
	423	"qca/crnv%02x.bin", rom_ver);
	424	else
	425	snprintf(config.fwname, sizeof(config.fwname),
	426	"qca/nvm_%08x.bin", soc_ver);
	427
ba493d4f	428	err = qca_download_firmware(hdev, &config);
83e81961	429	if (err < 0) {
ba493d4f	430	bt_dev_err(hdev, "QCA Failed to download NVM (%d)", err);
83e81961 BYTK	431	return err;
	432	}
	433
	434	/* Perform HCI reset */
ba493d4f	435	err = qca_send_reset(hdev);
83e81961	436	if (err < 0) {
ba493d4f	437	bt_dev_err(hdev, "QCA Failed to run HCI_RESET (%d)", err);
83e81961 BYTK	438	return err;
	439	}
	440
ba493d4f	441	bt_dev_info(hdev, "QCA setup on UART is completed");
83e81961 BYTK	442
	443	return 0;
	444	}
ba493d4f	445	EXPORT_SYMBOL_GPL(qca_uart_setup);
83e81961	446
5c0a1001 BG	447	int qca_set_bdaddr(struct hci_dev hdev, const bdaddr_t bdaddr)
	448	{
	449	struct sk_buff *skb;
	450	int err;
	451
	452	skb = __hci_cmd_sync_ev(hdev, EDL_WRITE_BD_ADDR_OPCODE, 6, bdaddr,
	453	HCI_EV_VENDOR, HCI_INIT_TIMEOUT);
	454	if (IS_ERR(skb)) {
	455	err = PTR_ERR(skb);
	456	bt_dev_err(hdev, "QCA Change address cmd failed (%d)", err);
	457	return err;
	458	}
	459
	460	kfree_skb(skb);
	461
	462	return 0;
	463	}
	464	EXPORT_SYMBOL_GPL(qca_set_bdaddr);
	465
523760b7	466
83e81961 BYTK	467	MODULE_AUTHOR("Ben Young Tae Kim <ytkim@qca.qualcomm.com>");
	468	MODULE_DESCRIPTION("Bluetooth support for Qualcomm Atheros family ver " VERSION);
	469	MODULE_VERSION(VERSION);
	470	MODULE_LICENSE("GPL");