[thirdparty/kernel/linux.git] / drivers / staging / rtl8192u / r819xU_firmware.c

// SPDX-License-Identifier: GPL-2.0
/**************************************************************************************************
 * Procedure:    Init boot code/firmware code/data session
 *
 * Description: This routine will initialize firmware. If any error occurs during the initialization
 *		process, the routine shall terminate immediately and return fail.
 *		NIC driver should call NdisOpenFile only from MiniportInitialize.
 *
 * Arguments:   The pointer of the adapter

 * Returns:
 *        NDIS_STATUS_FAILURE - the following initialization process should be terminated
 *        NDIS_STATUS_SUCCESS - if firmware initialization process success
 **************************************************************************************************/

#include "r8192U.h"
#include "r8192U_hw.h"
#include "r819xU_firmware_img.h"
#include "r819xU_firmware.h"
#include <linux/firmware.h>

static void firmware_init_param(struct net_device *dev)
{
	struct r8192_priv	*priv = ieee80211_priv(dev);
	rt_firmware		*pfirmware = priv->pFirmware;

	pfirmware->cmdpacket_frag_thresold = GET_COMMAND_PACKET_FRAG_THRESHOLD(MAX_TRANSMIT_BUFFER_SIZE);
}

/*
 * segment the img and use the ptr and length to remember info on each segment
 *
 */
static bool fw_download_code(struct net_device *dev, u8 *code_virtual_address,
			     u32 buffer_len)
{
	struct r8192_priv   *priv = ieee80211_priv(dev);
	bool		    rt_status = true;
	u16		    frag_threshold;
	u16		    frag_length, frag_offset = 0;
	int		    i;

	rt_firmware	    *pfirmware = priv->pFirmware;
	struct sk_buff	    *skb;
	unsigned char	    *seg_ptr;
	struct cb_desc		    *tcb_desc;
	u8                  bLastIniPkt;
	u8		    index;

	firmware_init_param(dev);
	/* Fragmentation might be required */
	frag_threshold = pfirmware->cmdpacket_frag_thresold;
	do {
		if ((buffer_len - frag_offset) > frag_threshold) {
			frag_length = frag_threshold;
			bLastIniPkt = 0;

		} else {
			frag_length = buffer_len - frag_offset;
			bLastIniPkt = 1;

		}

		/* Allocate skb buffer to contain firmware info and tx descriptor info
		 * add 4 to avoid packet appending overflow.
		 */
		skb  = dev_alloc_skb(USB_HWDESC_HEADER_LEN + frag_length + 4);
		if (!skb)
			return false;
		memcpy((unsigned char *)(skb->cb), &dev, sizeof(dev));
		tcb_desc = (struct cb_desc *)(skb->cb + MAX_DEV_ADDR_SIZE);
		tcb_desc->queue_index = TXCMD_QUEUE;
		tcb_desc->bCmdOrInit = DESC_PACKET_TYPE_INIT;
		tcb_desc->bLastIniPkt = bLastIniPkt;

		skb_reserve(skb, USB_HWDESC_HEADER_LEN);
		seg_ptr = skb->data;
		/*
		 * Transform from little endian to big endian
		 * and pending  zero
		 */
		for (i = 0; i < frag_length; i += 4) {
			*seg_ptr++ = ((i+0) < frag_length)?code_virtual_address[i+3] : 0;
			*seg_ptr++ = ((i+1) < frag_length)?code_virtual_address[i+2] : 0;
			*seg_ptr++ = ((i+2) < frag_length)?code_virtual_address[i+1] : 0;
			*seg_ptr++ = ((i+3) < frag_length)?code_virtual_address[i+0] : 0;
		}
		tcb_desc->txbuf_size = (u16)i;
		skb_put(skb, i);

		index = tcb_desc->queue_index;
		if (!priv->ieee80211->check_nic_enough_desc(dev, index) ||
		       (!skb_queue_empty(&priv->ieee80211->skb_waitQ[index])) ||
		       (priv->ieee80211->queue_stop)) {
			RT_TRACE(COMP_FIRMWARE, "=====================================================> tx full!\n");
			skb_queue_tail(&priv->ieee80211->skb_waitQ[tcb_desc->queue_index], skb);
		} else {
			priv->ieee80211->softmac_hard_start_xmit(skb, dev);
		}

		code_virtual_address += frag_length;
		frag_offset += frag_length;

	} while (frag_offset < buffer_len);

	return rt_status;

}

/*
 * Procedure:	Check whether main code is download OK. If OK, turn on CPU
 *
 * Description:	CPU register locates in different page against general register.
 *	    Switch to CPU register in the begin and switch back before return
 *
 *
 * Arguments:   The pointer of the adapter
 *
 * Returns:
 *        NDIS_STATUS_FAILURE - the following initialization process should
 *				be terminated
 *        NDIS_STATUS_SUCCESS - if firmware initialization process success
 */
static bool CPUcheck_maincodeok_turnonCPU(struct net_device *dev)
{
	bool		rt_status = true;
	int		check_putcodeOK_time = 200000, check_bootOk_time = 200000;
	u32		CPU_status = 0;

	/* Check whether put code OK */
	do {
		read_nic_dword(dev, CPU_GEN, &CPU_status);

		if (CPU_status&CPU_GEN_PUT_CODE_OK)
			break;

	} while (check_putcodeOK_time--);

	if (!(CPU_status&CPU_GEN_PUT_CODE_OK)) {
		RT_TRACE(COMP_ERR, "Download Firmware: Put code fail!\n");
		goto CPUCheckMainCodeOKAndTurnOnCPU_Fail;
	} else {
		RT_TRACE(COMP_FIRMWARE, "Download Firmware: Put code ok!\n");
	}

	/* Turn On CPU */
	read_nic_dword(dev, CPU_GEN, &CPU_status);
	write_nic_byte(dev, CPU_GEN,
		       (u8)((CPU_status | CPU_GEN_PWR_STB_CPU) & 0xff));
	mdelay(1000);

	/* Check whether CPU boot OK */
	do {
		read_nic_dword(dev, CPU_GEN, &CPU_status);

		if (CPU_status&CPU_GEN_BOOT_RDY)
			break;
	} while (check_bootOk_time--);

	if (!(CPU_status&CPU_GEN_BOOT_RDY))
		goto CPUCheckMainCodeOKAndTurnOnCPU_Fail;
	else
		RT_TRACE(COMP_FIRMWARE, "Download Firmware: Boot ready!\n");

	return rt_status;

CPUCheckMainCodeOKAndTurnOnCPU_Fail:
	RT_TRACE(COMP_ERR, "ERR in %s()\n", __func__);
	rt_status = false;
	return rt_status;
}

static bool CPUcheck_firmware_ready(struct net_device *dev)
{

	bool		rt_status = true;
	int		check_time = 200000;
	u32		CPU_status = 0;

	/* Check Firmware Ready */
	do {
		read_nic_dword(dev, CPU_GEN, &CPU_status);

		if (CPU_status&CPU_GEN_FIRM_RDY)
			break;

	} while (check_time--);

	if (!(CPU_status&CPU_GEN_FIRM_RDY))
		goto CPUCheckFirmwareReady_Fail;
	else
		RT_TRACE(COMP_FIRMWARE, "Download Firmware: Firmware ready!\n");

	return rt_status;

CPUCheckFirmwareReady_Fail:
	RT_TRACE(COMP_ERR, "ERR in %s()\n", __func__);
	rt_status = false;
	return rt_status;

}

bool init_firmware(struct net_device *dev)
{
	struct r8192_priv	*priv = ieee80211_priv(dev);
	bool			rt_status = true;

	u32			file_length = 0;
	u8			*mapped_file = NULL;
	u32			init_step = 0;
	opt_rst_type_e	rst_opt = OPT_SYSTEM_RESET;
	firmware_init_step_e	starting_state = FW_INIT_STEP0_BOOT;

	rt_firmware		*pfirmware = priv->pFirmware;
	const struct firmware	*fw_entry;
	const char *fw_name[3] = { "RTL8192U/boot.img",
			   "RTL8192U/main.img",
			   "RTL8192U/data.img"};
	int rc;

	RT_TRACE(COMP_FIRMWARE, " PlatformInitFirmware()==>\n");

	if (pfirmware->firmware_status == FW_STATUS_0_INIT) {
		/* it is called by reset */
		rst_opt = OPT_SYSTEM_RESET;
		starting_state = FW_INIT_STEP0_BOOT;
		/* TODO: system reset */

	} else if (pfirmware->firmware_status == FW_STATUS_5_READY) {
		/* it is called by Initialize */
		rst_opt = OPT_FIRMWARE_RESET;
		starting_state = FW_INIT_STEP2_DATA;
	} else {
		 RT_TRACE(COMP_FIRMWARE, "PlatformInitFirmware: undefined firmware state\n");
	}

	/*
	 * Download boot, main, and data image for System reset.
	 * Download data image for firmware reset
	 */
	for (init_step = starting_state; init_step <= FW_INIT_STEP2_DATA; init_step++) {
		/*
		 * Open image file, and map file to continuous memory if open file success.
		 * or read image file from array. Default load from IMG file
		 */
		if (rst_opt == OPT_SYSTEM_RESET) {
			rc = request_firmware(&fw_entry, fw_name[init_step], &priv->udev->dev);
			if (rc < 0) {
				RT_TRACE(COMP_ERR, "request firmware fail!\n");
				goto download_firmware_fail;
			}

			if (fw_entry->size > sizeof(pfirmware->firmware_buf)) {
				RT_TRACE(COMP_ERR, "img file size exceed the container buffer fail!\n");
				goto download_firmware_fail;
			}

			if (init_step != FW_INIT_STEP1_MAIN) {
				memcpy(pfirmware->firmware_buf, fw_entry->data, fw_entry->size);
				mapped_file = pfirmware->firmware_buf;
				file_length = fw_entry->size;
			} else {
				memset(pfirmware->firmware_buf, 0, 128);
				memcpy(&pfirmware->firmware_buf[128], fw_entry->data, fw_entry->size);
				mapped_file = pfirmware->firmware_buf;
				file_length = fw_entry->size + 128;
			}
			pfirmware->firmware_buf_size = file_length;
		} else if (rst_opt == OPT_FIRMWARE_RESET) {
			/* we only need to download data.img here */
			mapped_file = pfirmware->firmware_buf;
			file_length = pfirmware->firmware_buf_size;
		}

		/* Download image file */
		/* The firmware download process is just as following,
		 * 1. that is each packet will be segmented and inserted to the wait queue.
		 * 2. each packet segment will be put in the skb_buff packet.
		 * 3. each skb_buff packet data content will already include the firmware info
		 *   and Tx descriptor info
		 */
		rt_status = fw_download_code(dev, mapped_file, file_length);
		if (rst_opt == OPT_SYSTEM_RESET)
			release_firmware(fw_entry);

		if (!rt_status)
			goto download_firmware_fail;

		switch (init_step) {
		case FW_INIT_STEP0_BOOT:
			/* Download boot
			 * initialize command descriptor.
			 * will set polling bit when firmware code is also configured
			 */
			pfirmware->firmware_status = FW_STATUS_1_MOVE_BOOT_CODE;
			/* mdelay(1000); */
			/*
			 * To initialize IMEM, CPU move code  from 0x80000080,
			 * hence, we send 0x80 byte packet
			 */
			break;

		case FW_INIT_STEP1_MAIN:
			/* Download firmware code. Wait until Boot Ready and Turn on CPU */
			pfirmware->firmware_status = FW_STATUS_2_MOVE_MAIN_CODE;

			/* Check Put Code OK and Turn On CPU */
			rt_status = CPUcheck_maincodeok_turnonCPU(dev);
			if (!rt_status) {
				RT_TRACE(COMP_ERR, "CPUcheck_maincodeok_turnonCPU fail!\n");
				goto download_firmware_fail;
			}

			pfirmware->firmware_status = FW_STATUS_3_TURNON_CPU;
			break;

		case FW_INIT_STEP2_DATA:
			/* download initial data code */
			pfirmware->firmware_status = FW_STATUS_4_MOVE_DATA_CODE;
			mdelay(1);

			rt_status = CPUcheck_firmware_ready(dev);
			if (!rt_status) {
				RT_TRACE(COMP_ERR, "CPUcheck_firmware_ready fail(%d)!\n", rt_status);
				goto download_firmware_fail;
			}

			/* wait until data code is initialized ready.*/
			pfirmware->firmware_status = FW_STATUS_5_READY;
			break;
		}
	}

	RT_TRACE(COMP_FIRMWARE, "Firmware Download Success\n");
	return rt_status;

download_firmware_fail:
	RT_TRACE(COMP_ERR, "ERR in %s()\n", __func__);
	rt_status = false;
	return rt_status;

}

MODULE_FIRMWARE("RTL8192U/boot.img");
MODULE_FIRMWARE("RTL8192U/main.img");
MODULE_FIRMWARE("RTL8192U/data.img");
Commit	Line	Data
b2441318	1	// SPDX-License-Identifier: GPL-2.0
8fc8598e JC	2	/**************************************************************************************************
	3	* Procedure: Init boot code/firmware code/data session
	4	*
9b0131cb	5	* Description: This routine will initialize firmware. If any error occurs during the initialization
35997ff0	6	* process, the routine shall terminate immediately and return fail.
8fc8598e JC	7	* NIC driver should call NdisOpenFile only from MiniportInitialize.
	8	*
	9	* Arguments: The pointer of the adapter
	10
	11	* Returns:
	12	* NDIS_STATUS_FAILURE - the following initialization process should be terminated
	13	* NDIS_STATUS_SUCCESS - if firmware initialization process success
30d69ada	14	**************************************************************************************************/
2addf798	15
8fc8598e JC	16	#include "r8192U.h"
	17	#include "r8192U_hw.h"
	18	#include "r819xU_firmware_img.h"
	19	#include "r819xU_firmware.h"
8fc8598e	20	#include <linux/firmware.h>
2cc817c0 AR	21
2cc817c0 AR	22	static void firmware_init_param(struct net_device *dev)
8fc8598e	23	{
35997ff0	24	struct r8192_priv *priv = ieee80211_priv(dev);
8fc8598e JC	25	rt_firmware *pfirmware = priv->pFirmware;
	26
	27	pfirmware->cmdpacket_frag_thresold = GET_COMMAND_PACKET_FRAG_THRESHOLD(MAX_TRANSMIT_BUFFER_SIZE);
	28	}
	29
	30	/*
	31	* segment the img and use the ptr and length to remember info on each segment
	32	*
	33	*/
2cc817c0 AR	34	static bool fw_download_code(struct net_device dev, u8 code_virtual_address,
2cc817c0 AR	35	u32 buffer_len)
8fc8598e JC	36	{
8fc8598e JC	37	struct r8192_priv *priv = ieee80211_priv(dev);
35997ff0	38	bool rt_status = true;
8fc8598e JC	39	u16 frag_threshold;
8fc8598e JC	40	u16 frag_length, frag_offset = 0;
8fc8598e JC	41	int i;
	42
	43	rt_firmware *pfirmware = priv->pFirmware;
	44	struct sk_buff *skb;
	45	unsigned char *seg_ptr;
20f896c4	46	struct cb_desc *tcb_desc;
8fc8598e	47	u8 bLastIniPkt;
095ff453	48	u8 index;
8fc8598e JC	49
8fc8598e JC	50	firmware_init_param(dev);
6f438042	51	/* Fragmentation might be required */
8fc8598e JC	52	frag_threshold = pfirmware->cmdpacket_frag_thresold;
8fc8598e JC	53	do {
14bc0d4f	54	if ((buffer_len - frag_offset) > frag_threshold) {
bbfd888d	55	frag_length = frag_threshold;
8fc8598e JC	56	bLastIniPkt = 0;
	57
	58	} else {
	59	frag_length = buffer_len - frag_offset;
	60	bLastIniPkt = 1;
	61
	62	}
	63
	64	/* Allocate skb buffer to contain firmware info and tx descriptor info
	65	* add 4 to avoid packet appending overflow.
30d69ada	66	*/
8fc8598e	67	skb = dev_alloc_skb(USB_HWDESC_HEADER_LEN + frag_length + 4);
f8518efa XR	68	if (!skb)
f8518efa XR	69	return false;
e60b6538	70	memcpy((unsigned char *)(skb->cb), &dev, sizeof(dev));
20f896c4	71	tcb_desc = (struct cb_desc *)(skb->cb + MAX_DEV_ADDR_SIZE);
8fc8598e JC	72	tcb_desc->queue_index = TXCMD_QUEUE;
	73	tcb_desc->bCmdOrInit = DESC_PACKET_TYPE_INIT;
	74	tcb_desc->bLastIniPkt = bLastIniPkt;
	75
8fc8598e	76	skb_reserve(skb, USB_HWDESC_HEADER_LEN);
8fc8598e JC	77	seg_ptr = skb->data;
	78	/*
	79	* Transform from little endian to big endian
e406322b	80	* and pending zero
8fc8598e	81	*/
0bfacefd RB	82	for (i = 0; i < frag_length; i += 4) {
	83	*seg_ptr++ = ((i+0) < frag_length)?code_virtual_address[i+3] : 0;
	84	*seg_ptr++ = ((i+1) < frag_length)?code_virtual_address[i+2] : 0;
	85	*seg_ptr++ = ((i+2) < frag_length)?code_virtual_address[i+1] : 0;
	86	*seg_ptr++ = ((i+3) < frag_length)?code_virtual_address[i+0] : 0;
8fc8598e	87	}
0bfacefd	88	tcb_desc->txbuf_size = (u16)i;
8fc8598e JC	89	skb_put(skb, i);
8fc8598e JC	90
095ff453 RB	91	index = tcb_desc->queue_index;
	92	if (!priv->ieee80211->check_nic_enough_desc(dev, index) \|\|
	93	(!skb_queue_empty(&priv->ieee80211->skb_waitQ[index])) \|\|
	94	(priv->ieee80211->queue_stop)) {
bd1ccd33	95	RT_TRACE(COMP_FIRMWARE, "=====================================================> tx full!\n");
8fc8598e JC	96	skb_queue_tail(&priv->ieee80211->skb_waitQ[tcb_desc->queue_index], skb);
8fc8598e JC	97	} else {
0b4ef0a6	98	priv->ieee80211->softmac_hard_start_xmit(skb, dev);
8fc8598e JC	99	}
	100
	101	code_virtual_address += frag_length;
	102	frag_offset += frag_length;
	103
32b116ed	104	} while (frag_offset < buffer_len);
8fc8598e JC	105
	106	return rt_status;
	107
8fc8598e JC	108	}
8fc8598e JC	109
6f438042 TC	110	/*
	111	* Procedure: Check whether main code is download OK. If OK, turn on CPU
	112	*
	113	* Description: CPU register locates in different page against general register.
	114	* Switch to CPU register in the begin and switch back before return
	115	*
	116	*
	117	* Arguments: The pointer of the adapter
	118	*
	119	* Returns:
	120	* NDIS_STATUS_FAILURE - the following initialization process should
	121	* be terminated
	122	* NDIS_STATUS_SUCCESS - if firmware initialization process success
	123	*/
2cc817c0	124	static bool CPUcheck_maincodeok_turnonCPU(struct net_device *dev)
8fc8598e JC	125	{
	126	bool rt_status = true;
	127	int check_putcodeOK_time = 200000, check_bootOk_time = 200000;
e406322b	128	u32 CPU_status = 0;
8fc8598e JC	129
	130	/* Check whether put code OK */
	131	do {
b3d42bf1	132	read_nic_dword(dev, CPU_GEN, &CPU_status);
8fc8598e	133
14bc0d4f	134	if (CPU_status&CPU_GEN_PUT_CODE_OK)
8fc8598e JC	135	break;
8fc8598e JC	136
32b116ed	137	} while (check_putcodeOK_time--);
8fc8598e	138
14bc0d4f	139	if (!(CPU_status&CPU_GEN_PUT_CODE_OK)) {
8fc8598e JC	140	RT_TRACE(COMP_ERR, "Download Firmware: Put code fail!\n");
	141	goto CPUCheckMainCodeOKAndTurnOnCPU_Fail;
	142	} else {
	143	RT_TRACE(COMP_FIRMWARE, "Download Firmware: Put code ok!\n");
	144	}
	145
	146	/* Turn On CPU */
b3d42bf1	147	read_nic_dword(dev, CPU_GEN, &CPU_status);
5bb546f7 KG	148	write_nic_byte(dev, CPU_GEN,
5bb546f7 KG	149	(u8)((CPU_status \| CPU_GEN_PWR_STB_CPU) & 0xff));
8fc8598e JC	150	mdelay(1000);
	151
	152	/* Check whether CPU boot OK */
	153	do {
b3d42bf1	154	read_nic_dword(dev, CPU_GEN, &CPU_status);
8fc8598e	155
14bc0d4f	156	if (CPU_status&CPU_GEN_BOOT_RDY)
8fc8598e	157	break;
32b116ed	158	} while (check_bootOk_time--);
8fc8598e	159
0710bf3d	160	if (!(CPU_status&CPU_GEN_BOOT_RDY))
8fc8598e	161	goto CPUCheckMainCodeOKAndTurnOnCPU_Fail;
0710bf3d	162	else
8fc8598e	163	RT_TRACE(COMP_FIRMWARE, "Download Firmware: Boot ready!\n");
8fc8598e JC	164
	165	return rt_status;
	166
	167	CPUCheckMainCodeOKAndTurnOnCPU_Fail:
f8628a47	168	RT_TRACE(COMP_ERR, "ERR in %s()\n", __func__);
4b2faf80	169	rt_status = false;
8fc8598e JC	170	return rt_status;
	171	}
	172
2cc817c0	173	static bool CPUcheck_firmware_ready(struct net_device *dev)
8fc8598e JC	174	{
	175
	176	bool rt_status = true;
	177	int check_time = 200000;
	178	u32 CPU_status = 0;
	179
	180	/* Check Firmware Ready */
	181	do {
b3d42bf1	182	read_nic_dword(dev, CPU_GEN, &CPU_status);
8fc8598e	183
14bc0d4f	184	if (CPU_status&CPU_GEN_FIRM_RDY)
8fc8598e JC	185	break;
8fc8598e JC	186
32b116ed	187	} while (check_time--);
8fc8598e	188
14bc0d4f	189	if (!(CPU_status&CPU_GEN_FIRM_RDY))
8fc8598e JC	190	goto CPUCheckFirmwareReady_Fail;
	191	else
	192	RT_TRACE(COMP_FIRMWARE, "Download Firmware: Firmware ready!\n");
	193
	194	return rt_status;
	195
	196	CPUCheckFirmwareReady_Fail:
f8628a47	197	RT_TRACE(COMP_ERR, "ERR in %s()\n", __func__);
8fc8598e JC	198	rt_status = false;
	199	return rt_status;
	200
	201	}
	202
	203	bool init_firmware(struct net_device *dev)
	204	{
35997ff0	205	struct r8192_priv *priv = ieee80211_priv(dev);
4b2faf80	206	bool rt_status = true;
8fc8598e	207
8fc8598e JC	208	u32 file_length = 0;
	209	u8 *mapped_file = NULL;
	210	u32 init_step = 0;
	211	opt_rst_type_e rst_opt = OPT_SYSTEM_RESET;
35997ff0	212	firmware_init_step_e starting_state = FW_INIT_STEP0_BOOT;
8fc8598e JC	213
8fc8598e JC	214	rt_firmware *pfirmware = priv->pFirmware;
35997ff0	215	const struct firmware *fw_entry;
8fc8598e	216	const char *fw_name[3] = { "RTL8192U/boot.img",
e406322b	217	"RTL8192U/main.img",
8fc8598e JC	218	"RTL8192U/data.img"};
	219	int rc;
	220
	221	RT_TRACE(COMP_FIRMWARE, " PlatformInitFirmware()==>\n");
	222
020af9a5	223	if (pfirmware->firmware_status == FW_STATUS_0_INIT) {
8fc8598e JC	224	/* it is called by reset */
	225	rst_opt = OPT_SYSTEM_RESET;
	226	starting_state = FW_INIT_STEP0_BOOT;
6f438042	227	/* TODO: system reset */
8fc8598e	228
32b116ed	229	} else if (pfirmware->firmware_status == FW_STATUS_5_READY) {
8fc8598e JC	230	/* it is called by Initialize */
	231	rst_opt = OPT_FIRMWARE_RESET;
	232	starting_state = FW_INIT_STEP2_DATA;
32b116ed	233	} else {
8fc8598e JC	234	RT_TRACE(COMP_FIRMWARE, "PlatformInitFirmware: undefined firmware state\n");
	235	}
	236
	237	/*
	238	* Download boot, main, and data image for System reset.
589b3d06	239	* Download data image for firmware reset
8fc8598e	240	*/
5ec1aeb3	241	for (init_step = starting_state; init_step <= FW_INIT_STEP2_DATA; init_step++) {
8fc8598e	242	/*
8ef3a7ed	243	* Open image file, and map file to continuous memory if open file success.
8fc8598e JC	244	* or read image file from array. Default load from IMG file
8fc8598e JC	245	*/
14bc0d4f	246	if (rst_opt == OPT_SYSTEM_RESET) {
bd1ccd33	247	rc = request_firmware(&fw_entry, fw_name[init_step], &priv->udev->dev);
020af9a5	248	if (rc < 0) {
0a8692b5 BH	249	RT_TRACE(COMP_ERR, "request firmware fail!\n");
0a8692b5 BH	250	goto download_firmware_fail;
8fc8598e JC	251	}
8fc8598e JC	252
14bc0d4f	253	if (fw_entry->size > sizeof(pfirmware->firmware_buf)) {
0a8692b5 BH	254	RT_TRACE(COMP_ERR, "img file size exceed the container buffer fail!\n");
	255	goto download_firmware_fail;
	256	}
8fc8598e	257
14bc0d4f	258	if (init_step != FW_INIT_STEP1_MAIN) {
bd1ccd33	259	memcpy(pfirmware->firmware_buf, fw_entry->data, fw_entry->size);
0a8692b5 BH	260	mapped_file = pfirmware->firmware_buf;
	261	file_length = fw_entry->size;
	262	} else {
0b4ef0a6	263	memset(pfirmware->firmware_buf, 0, 128);
bd1ccd33	264	memcpy(&pfirmware->firmware_buf[128], fw_entry->data, fw_entry->size);
0a8692b5 BH	265	mapped_file = pfirmware->firmware_buf;
0a8692b5 BH	266	file_length = fw_entry->size + 128;
0a8692b5 BH	267	}
0a8692b5 BH	268	pfirmware->firmware_buf_size = file_length;
020af9a5	269	} else if (rst_opt == OPT_FIRMWARE_RESET) {
8fc8598e JC	270	/* we only need to download data.img here */
	271	mapped_file = pfirmware->firmware_buf;
	272	file_length = pfirmware->firmware_buf_size;
	273	}
	274
	275	/* Download image file */
	276	/* The firmware download process is just as following,
	277	* 1. that is each packet will be segmented and inserted to the wait queue.
	278	* 2. each packet segment will be put in the skb_buff packet.
	279	* 3. each skb_buff packet data content will already include the firmware info
	280	* and Tx descriptor info
30d69ada	281	*/
0b4ef0a6	282	rt_status = fw_download_code(dev, mapped_file, file_length);
2930d0b9	283	if (rst_opt == OPT_SYSTEM_RESET)
8fc8598e	284	release_firmware(fw_entry);
8fc8598e	285
a0886f73	286	if (!rt_status)
8fc8598e	287	goto download_firmware_fail;
8fc8598e	288
ad638459	289	switch (init_step) {
24fbe875 SH	290	case FW_INIT_STEP0_BOOT:
	291	/* Download boot
	292	* initialize command descriptor.
	293	* will set polling bit when firmware code is also configured
	294	*/
	295	pfirmware->firmware_status = FW_STATUS_1_MOVE_BOOT_CODE;
6f438042	296	/* mdelay(1000); */
24fbe875 SH	297	/*
	298	* To initialize IMEM, CPU move code from 0x80000080,
	299	* hence, we send 0x80 byte packet
	300	*/
	301	break;
	302
	303	case FW_INIT_STEP1_MAIN:
	304	/* Download firmware code. Wait until Boot Ready and Turn on CPU */
	305	pfirmware->firmware_status = FW_STATUS_2_MOVE_MAIN_CODE;
	306
	307	/* Check Put Code OK and Turn On CPU */
	308	rt_status = CPUcheck_maincodeok_turnonCPU(dev);
a0886f73	309	if (!rt_status) {
24fbe875 SH	310	RT_TRACE(COMP_ERR, "CPUcheck_maincodeok_turnonCPU fail!\n");
	311	goto download_firmware_fail;
	312	}
	313
	314	pfirmware->firmware_status = FW_STATUS_3_TURNON_CPU;
	315	break;
	316
	317	case FW_INIT_STEP2_DATA:
	318	/* download initial data code */
	319	pfirmware->firmware_status = FW_STATUS_4_MOVE_DATA_CODE;
	320	mdelay(1);
	321
	322	rt_status = CPUcheck_firmware_ready(dev);
a0886f73	323	if (!rt_status) {
bd1ccd33	324	RT_TRACE(COMP_ERR, "CPUcheck_firmware_ready fail(%d)!\n", rt_status);
24fbe875 SH	325	goto download_firmware_fail;
	326	}
	327
	328	/* wait until data code is initialized ready.*/
	329	pfirmware->firmware_status = FW_STATUS_5_READY;
	330	break;
8fc8598e JC	331	}
	332	}
	333
	334	RT_TRACE(COMP_FIRMWARE, "Firmware Download Success\n");
8fc8598e JC	335	return rt_status;
	336
	337	download_firmware_fail:
f8628a47	338	RT_TRACE(COMP_ERR, "ERR in %s()\n", __func__);
4b2faf80	339	rt_status = false;
8fc8598e JC	340	return rt_status;
	341
	342	}
	343
589c3ca0 SLH	344	MODULE_FIRMWARE("RTL8192U/boot.img");
	345	MODULE_FIRMWARE("RTL8192U/main.img");
	346	MODULE_FIRMWARE("RTL8192U/data.img");