pcxhr_core.c

linux2.6.16版本

	err = pcxhr_download_dsp(mgr, boot);
	if (err)
		return err;
	/* wait for hf5 bit */
	return pcxhr_check_reg_bit(mgr, PCXHR_PLX_MBOX0, PCXHR_MBOX0_HF5,
				   PCXHR_MBOX0_HF5, PCXHR_TIMEOUT_DSP, &dummy);
}

/*
 * load the final dsp image
 */
int pcxhr_load_dsp_binary(struct pcxhr_mgr *mgr, const struct firmware *dsp)
{
	int err;
	unsigned char dummy;
	err = pcxhr_send_it_dsp(mgr, PCXHR_IT_RESET_BOARD_FUNC, 0);
	if (err)
		return err;
	err = pcxhr_send_it_dsp(mgr, PCXHR_IT_DOWNLOAD_DSP, 0);
	if (err)
		return err;
	err = pcxhr_download_dsp(mgr, dsp);
	if (err)
		return err;
	/* wait for chk bit */
	return pcxhr_check_reg_bit(mgr, PCXHR_DSP_ISR, PCXHR_ISR_HI08_CHK,
				   PCXHR_ISR_HI08_CHK, PCXHR_TIMEOUT_DSP, &dummy);
}


struct pcxhr_cmd_info {
	u32 opcode;		/* command word */
	u16 st_length;		/* status length */
	u16 st_type;		/* status type (RMH_SSIZE_XXX) */
};

/* RMH status type */
enum {
	RMH_SSIZE_FIXED = 0,	/* status size fix (st_length = 0..x) */
	RMH_SSIZE_ARG = 1,	/* status size given in the LSB byte (used with st_length = 1) */
	RMH_SSIZE_MASK = 2,	/* status size given in bitmask  (used with st_length = 1) */
};

/*
 * Array of DSP commands
 */
static struct pcxhr_cmd_info pcxhr_dsp_cmds[] = {
[CMD_VERSION] =				{ 0x010000, 1, RMH_SSIZE_FIXED },
[CMD_SUPPORTED] =			{ 0x020000, 4, RMH_SSIZE_FIXED },
[CMD_TEST_IT] =				{ 0x040000, 1, RMH_SSIZE_FIXED },
[CMD_SEND_IRQA] =			{ 0x070001, 0, RMH_SSIZE_FIXED },
[CMD_ACCESS_IO_WRITE] =			{ 0x090000, 1, RMH_SSIZE_ARG },
[CMD_ACCESS_IO_READ] =			{ 0x094000, 1, RMH_SSIZE_ARG },
[CMD_ASYNC] =				{ 0x0a0000, 1, RMH_SSIZE_ARG },
[CMD_MODIFY_CLOCK] =			{ 0x0d0000, 0, RMH_SSIZE_FIXED },
[CMD_RESYNC_AUDIO_INPUTS] =		{ 0x0e0000, 0, RMH_SSIZE_FIXED },
[CMD_GET_DSP_RESOURCES] =		{ 0x100000, 4, RMH_SSIZE_FIXED },
[CMD_SET_TIMER_INTERRUPT] =		{ 0x110000, 0, RMH_SSIZE_FIXED },
[CMD_RES_PIPE] =			{ 0x400000, 0, RMH_SSIZE_FIXED },
[CMD_FREE_PIPE] =			{ 0x410000, 0, RMH_SSIZE_FIXED },
[CMD_CONF_PIPE] =			{ 0x422101, 0, RMH_SSIZE_FIXED },
[CMD_STOP_PIPE] =			{ 0x470004, 0, RMH_SSIZE_FIXED },
[CMD_PIPE_SAMPLE_COUNT] =		{ 0x49a000, 2, RMH_SSIZE_FIXED },
[CMD_CAN_START_PIPE] =			{ 0x4b0000, 1, RMH_SSIZE_FIXED },
[CMD_START_STREAM] =			{ 0x802000, 0, RMH_SSIZE_FIXED },
[CMD_STREAM_OUT_LEVEL_ADJUST] =		{ 0x822000, 0, RMH_SSIZE_FIXED },
[CMD_STOP_STREAM] =			{ 0x832000, 0, RMH_SSIZE_FIXED },
[CMD_UPDATE_R_BUFFERS] =		{ 0x840000, 0, RMH_SSIZE_FIXED },
[CMD_FORMAT_STREAM_OUT] =		{ 0x860000, 0, RMH_SSIZE_FIXED },
[CMD_FORMAT_STREAM_IN] =		{ 0x870000, 0, RMH_SSIZE_FIXED },
[CMD_STREAM_SAMPLE_COUNT] =		{ 0x902000, 2, RMH_SSIZE_FIXED },	/* stat_len = nb_streams * 2 */
[CMD_AUDIO_LEVEL_ADJUST] =		{ 0xc22000, 0, RMH_SSIZE_FIXED },
};

#ifdef CONFIG_SND_DEBUG_DETECT
static char* cmd_names[] = {
[CMD_VERSION] =				"CMD_VERSION",
[CMD_SUPPORTED] =			"CMD_SUPPORTED",
[CMD_TEST_IT] =				"CMD_TEST_IT",
[CMD_SEND_IRQA] =			"CMD_SEND_IRQA",
[CMD_ACCESS_IO_WRITE] =			"CMD_ACCESS_IO_WRITE",
[CMD_ACCESS_IO_READ] =			"CMD_ACCESS_IO_READ",
[CMD_ASYNC] =				"CMD_ASYNC",
[CMD_MODIFY_CLOCK] =			"CMD_MODIFY_CLOCK",
[CMD_RESYNC_AUDIO_INPUTS] =		"CMD_RESYNC_AUDIO_INPUTS",
[CMD_GET_DSP_RESOURCES] =		"CMD_GET_DSP_RESOURCES",
[CMD_SET_TIMER_INTERRUPT] =		"CMD_SET_TIMER_INTERRUPT",
[CMD_RES_PIPE] =			"CMD_RES_PIPE",
[CMD_FREE_PIPE] =			"CMD_FREE_PIPE",
[CMD_CONF_PIPE] =			"CMD_CONF_PIPE",
[CMD_STOP_PIPE] =			"CMD_STOP_PIPE",
[CMD_PIPE_SAMPLE_COUNT] =		"CMD_PIPE_SAMPLE_COUNT",
[CMD_CAN_START_PIPE] =			"CMD_CAN_START_PIPE",
[CMD_START_STREAM] =			"CMD_START_STREAM",
[CMD_STREAM_OUT_LEVEL_ADJUST] =		"CMD_STREAM_OUT_LEVEL_ADJUST",
[CMD_STOP_STREAM] =			"CMD_STOP_STREAM",
[CMD_UPDATE_R_BUFFERS] =		"CMD_UPDATE_R_BUFFERS",
[CMD_FORMAT_STREAM_OUT] =		"CMD_FORMAT_STREAM_OUT",
[CMD_FORMAT_STREAM_IN] =		"CMD_FORMAT_STREAM_IN",
[CMD_STREAM_SAMPLE_COUNT] =		"CMD_STREAM_SAMPLE_COUNT",
[CMD_AUDIO_LEVEL_ADJUST] =		"CMD_AUDIO_LEVEL_ADJUST",
};
#endif


static int pcxhr_read_rmh_status(struct pcxhr_mgr *mgr, struct pcxhr_rmh *rmh)
{
	int err;
	int i;
	u32 data;
	u32 size_mask;
	unsigned char reg;
	int max_stat_len;

	if (rmh->stat_len < PCXHR_SIZE_MAX_STATUS)
		max_stat_len = PCXHR_SIZE_MAX_STATUS;
	else	max_stat_len = rmh->stat_len;

	for (i = 0; i < rmh->stat_len; i++) {
		/* wait for receiver full */
		err = pcxhr_check_reg_bit(mgr, PCXHR_DSP_ISR, PCXHR_ISR_HI08_RXDF,
					  PCXHR_ISR_HI08_RXDF, PCXHR_TIMEOUT_DSP, &reg);
		if (err) {
			snd_printk(KERN_ERR "ERROR RMH stat: ISR:RXDF=1 (ISR = %x; i=%d )\n",
				   reg, i);
			return err;
		}
		/* read data */
		data  = PCXHR_INPB(mgr, PCXHR_DSP_TXH) << 16;
		data |= PCXHR_INPB(mgr, PCXHR_DSP_TXM) << 8;
		data |= PCXHR_INPB(mgr, PCXHR_DSP_TXL);

		/* need to update rmh->stat_len on the fly ?? */
		if (i==0) {
			if (rmh->dsp_stat != RMH_SSIZE_FIXED) {
				if (rmh->dsp_stat == RMH_SSIZE_ARG) {
					rmh->stat_len = (u16)(data & 0x0000ff) + 1;
					data &= 0xffff00;
				} else {
					/* rmh->dsp_stat == RMH_SSIZE_MASK */
					rmh->stat_len = 1;
					size_mask = data;
					while (size_mask) {
						if (size_mask & 1)
							rmh->stat_len++;
						size_mask >>= 1;
					}
				}
			}
		}
#ifdef CONFIG_SND_DEBUG_DETECT
		if (rmh->cmd_idx < CMD_LAST_INDEX)
			snd_printdd("    stat[%d]=%x\n", i, data);
#endif
		if (i < max_stat_len)
			rmh->stat[i] = data;
	}
	if (rmh->stat_len > max_stat_len) {
		snd_printdd("PCXHR : rmh->stat_len=%x too big\n", rmh->stat_len);
		rmh->stat_len = max_stat_len;
	}
	return 0;
}

static int pcxhr_send_msg_nolock(struct pcxhr_mgr *mgr, struct pcxhr_rmh *rmh)
{
	int err;
	int i;
	u32 data;
	unsigned char reg;

	snd_assert(rmh->cmd_len<PCXHR_SIZE_MAX_CMD, return -EINVAL);
	err = pcxhr_send_it_dsp(mgr, PCXHR_IT_MESSAGE, 1);
	if (err) {
		snd_printk(KERN_ERR "pcxhr_send_message : ED_DSP_CRASHED\n");
		return err;
	}
	/* wait for chk bit */
	err = pcxhr_check_reg_bit(mgr, PCXHR_DSP_ISR, PCXHR_ISR_HI08_CHK,
				  PCXHR_ISR_HI08_CHK, PCXHR_TIMEOUT_DSP, &reg);
	if (err)
		return err;
	/* reset irq chk */
	err = pcxhr_send_it_dsp(mgr, PCXHR_IT_RESET_CHK, 1);
	if (err)
		return err;
	/* wait for chk bit == 0*/
	err = pcxhr_check_reg_bit(mgr, PCXHR_DSP_ISR, PCXHR_ISR_HI08_CHK, 0,
				  PCXHR_TIMEOUT_DSP, &reg);
	if (err)
		return err;

	data = rmh->cmd[0];

	if (rmh->cmd_len > 1)
		data |= 0x008000;	/* MASK_MORE_THAN_1_WORD_COMMAND */
	else
		data &= 0xff7fff;	/* MASK_1_WORD_COMMAND */
#ifdef CONFIG_SND_DEBUG_DETECT
	if (rmh->cmd_idx < CMD_LAST_INDEX)
		snd_printdd("MSG cmd[0]=%x (%s)\n", data, cmd_names[rmh->cmd_idx]);
#endif

	err = pcxhr_check_reg_bit(mgr, PCXHR_DSP_ISR, PCXHR_ISR_HI08_TRDY,
				  PCXHR_ISR_HI08_TRDY, PCXHR_TIMEOUT_DSP, &reg);
	if (err)
		return err;
	PCXHR_OUTPB(mgr, PCXHR_DSP_TXH, (data>>16)&0xFF);
	PCXHR_OUTPB(mgr, PCXHR_DSP_TXM, (data>>8)&0xFF);
	PCXHR_OUTPB(mgr, PCXHR_DSP_TXL, (data&0xFF));

	if (rmh->cmd_len > 1) {
		/* send length */
		data = rmh->cmd_len - 1;
		err = pcxhr_check_reg_bit(mgr, PCXHR_DSP_ISR, PCXHR_ISR_HI08_TRDY,
					  PCXHR_ISR_HI08_TRDY, PCXHR_TIMEOUT_DSP, &reg);
		if (err)
			return err;
		PCXHR_OUTPB(mgr, PCXHR_DSP_TXH, (data>>16)&0xFF);
		PCXHR_OUTPB(mgr, PCXHR_DSP_TXM, (data>>8)&0xFF);
		PCXHR_OUTPB(mgr, PCXHR_DSP_TXL, (data&0xFF));

		for (i=1; i < rmh->cmd_len; i++) {
			/* send other words */
			data = rmh->cmd[i];
#ifdef CONFIG_SND_DEBUG_DETECT
			if (rmh->cmd_idx < CMD_LAST_INDEX)
				snd_printdd("    cmd[%d]=%x\n", i, data);
#endif
			err = pcxhr_check_reg_bit(mgr, PCXHR_DSP_ISR,
						  PCXHR_ISR_HI08_TRDY,
						  PCXHR_ISR_HI08_TRDY,
						  PCXHR_TIMEOUT_DSP, &reg);
			if (err)
				return err;
			PCXHR_OUTPB(mgr, PCXHR_DSP_TXH, (data>>16)&0xFF);
			PCXHR_OUTPB(mgr, PCXHR_DSP_TXM, (data>>8)&0xFF);
			PCXHR_OUTPB(mgr, PCXHR_DSP_TXL, (data&0xFF));
		}
	}
	/* wait for chk bit */
	err = pcxhr_check_reg_bit(mgr, PCXHR_DSP_ISR, PCXHR_ISR_HI08_CHK,
				  PCXHR_ISR_HI08_CHK, PCXHR_TIMEOUT_DSP, &reg);
	if (err)
		return err;
	/* test status ISR */
	if (reg & PCXHR_ISR_HI08_ERR) {
		/* ERROR, wait for receiver full */
		err = pcxhr_check_reg_bit(mgr, PCXHR_DSP_ISR, PCXHR_ISR_HI08_RXDF,
					  PCXHR_ISR_HI08_RXDF, PCXHR_TIMEOUT_DSP, &reg);
		if (err) {
			snd_printk(KERN_ERR "ERROR RMH: ISR:RXDF=1 (ISR = %x)\n", reg);
			return err;
		}
		/* read error code */
		data  = PCXHR_INPB(mgr, PCXHR_DSP_TXH) << 16;
		data |= PCXHR_INPB(mgr, PCXHR_DSP_TXM) << 8;
		data |= PCXHR_INPB(mgr, PCXHR_DSP_TXL);
		snd_printk(KERN_ERR "ERROR RMH(%d): 0x%x\n", rmh->cmd_idx, data);
		err = -EINVAL;
	} else {
		/* read the response data */
		err = pcxhr_read_rmh_status(mgr, rmh);
	}
	/* reset semaphore */
	if (pcxhr_send_it_dsp(mgr, PCXHR_IT_RESET_SEMAPHORE, 1) < 0)
		return -EIO;
	return err;
}


/**
 * pcxhr_init_rmh - initialize the RMH instance
 * @rmh: the rmh pointer to be initialized
 * @cmd: the rmh command to be set
 */
void pcxhr_init_rmh(struct pcxhr_rmh *rmh, int cmd)
{
	snd_assert(cmd < CMD_LAST_INDEX, return);
	rmh->cmd[0] = pcxhr_dsp_cmds[cmd].opcode;
	rmh->cmd_len = 1;
	rmh->stat_len = pcxhr_dsp_cmds[cmd].st_length;
	rmh->dsp_stat = pcxhr_dsp_cmds[cmd].st_type;
	rmh->cmd_idx = cmd;
}


void pcxhr_set_pipe_cmd_params(struct pcxhr_rmh *rmh, int capture,
			       unsigned int param1, unsigned int param2,
			       unsigned int param3)
{
	snd_assert(param1 <= MASK_FIRST_FIELD);
	if (capture)
		rmh->cmd[0] |= 0x800;		/* COMMAND_RECORD_MASK */
	if (param1)
		rmh->cmd[0] |= (param1 << FIELD_SIZE);
	if (param2) {
		snd_assert(param2 <= MASK_FIRST_FIELD);
		rmh->cmd[0] |= param2;
	}
	if(param3) {
		snd_assert(param3 <= MASK_DSP_WORD);
		rmh->cmd[1] = param3;
		rmh->cmd_len = 2;
	}
}

/*
 * pcxhr_send_msg - send a DSP message with spinlock
 * @rmh: the rmh record to send and receive
 *
 * returns 0 if successful, or a negative error code.
 */
int pcxhr_send_msg(struct pcxhr_mgr *mgr, struct pcxhr_rmh *rmh)
{
	unsigned long flags;
	int err;
	spin_lock_irqsave(&mgr->msg_lock, flags);
	err = pcxhr_send_msg_nolock(mgr, rmh);
	spin_unlock_irqrestore(&mgr->msg_lock, flags);
	return err;
}

static inline int pcxhr_pipes_running(struct pcxhr_mgr *mgr)
{
	int start_mask = PCXHR_INPL(mgr, PCXHR_PLX_MBOX2);
	/* least segnificant 12 bits are the pipe states for the playback audios */
	/* next 12 bits are the pipe states for the capture audios
	 * (PCXHR_PIPE_STATE_CAPTURE_OFFSET)
	 */
	start_mask &= 0xffffff;
	snd_printdd("CMD_PIPE_STATE MBOX2=0x%06x\n", start_mask);
	return start_mask;
}

#define PCXHR_PIPE_STATE_CAPTURE_OFFSET		12
#define MAX_WAIT_FOR_DSP			20

static int pcxhr_prepair_pipe_start(struct pcxhr_mgr *mgr, int audio_mask, int *retry)
{
	struct pcxhr_rmh rmh;
	int err;
	int audio = 0;

	*retry = 0;
	while (audio_mask) {
		if (audio_mask & 1) {
			pcxhr_init_rmh(&rmh, CMD_CAN_START_PIPE);
			if (audio < PCXHR_PIPE_STATE_CAPTURE_OFFSET) {
				/* can start playback pipe */
				pcxhr_set_pipe_cmd_params(&rmh, 0, audio, 0, 0);
			} else {
				/* can start capture pipe */
				pcxhr_set_pipe_cmd_params(&rmh, 1, audio -
							  PCXHR_PIPE_STATE_CAPTURE_OFFSET,
							  0, 0);
			}
			err = pcxhr_send_msg(mgr, &rmh);
			if (err) {
				snd_printk(KERN_ERR
					   "error pipe start (CMD_CAN_START_PIPE) err=%x!\n",
					   err);
				return err;
			}
			/* if the pipe couldn't be prepaired for start, retry it later */
			if (rmh.stat[0] == 0)
				*retry |= (1<<audio);
		}
		audio_mask>>=1;
		audio++;
	}
	return 0;
}

static int pcxhr_stop_pipes(struct pcxhr_mgr *mgr, int audio_mask)
{
	struct pcxhr_rmh rmh;
	int err;
	int audio = 0;

	while (audio_mask) {
		if (audio_mask & 1) {
			pcxhr_init_rmh(&rmh, CMD_STOP_PIPE);
			if (audio < PCXHR_PIPE_STATE_CAPTURE_OFFSET) {
				/* stop playback pipe */
				pcxhr_set_pipe_cmd_params(&rmh, 0, audio, 0, 0);
			} else {
				/* stop capture pipe */
				pcxhr_set_pipe_cmd_params(&rmh, 1, audio -
							  PCXHR_PIPE_STATE_CAPTURE_OFFSET,
							  0, 0);
			}
			err = pcxhr_send_msg(mgr, &rmh);
			if (err) {
				snd_printk(KERN_ERR
					   "error pipe stop (CMD_STOP_PIPE) err=%x!\n",
					   err);
				return err;
			}
		}
		audio_mask>>=1;
		audio++;
	}
	return 0;
}