mixart_hwdep.c

linux-2.6.15.6

	}

	return 0;
}


/* firmware base addresses (when hard coded) */
#define MIXART_MOTHERBOARD_XLX_BASE_ADDRESS   0x00600000

static int mixart_dsp_load(mixart_mgr_t* mgr, int index, const struct firmware *dsp)
{
	int           err, card_index;
	u32           status_xilinx, status_elf, status_daught;
	u32           val;

	/* read motherboard xilinx status */
	status_xilinx = readl_be( MIXART_MEM( mgr,MIXART_PSEUDOREG_MXLX_STATUS_OFFSET ));
	/* read elf status */
	status_elf = readl_be( MIXART_MEM( mgr,MIXART_PSEUDOREG_ELF_STATUS_OFFSET ));
	/* read daughterboard xilinx status */
	status_daught = readl_be( MIXART_MEM( mgr,MIXART_PSEUDOREG_DXLX_STATUS_OFFSET ));

	/* motherboard xilinx status 5 will say that the board is performing a reset */
	if( status_xilinx == 5 ) {
		snd_printk( KERN_ERR "miXart is resetting !\n");
		return -EAGAIN; /* try again later */
	}

	switch (index)   {
	case MIXART_MOTHERBOARD_XLX_INDEX:

		/* xilinx already loaded ? */ 
		if( status_xilinx == 4 ) {
			snd_printk( KERN_DEBUG "xilinx is already loaded !\n");
			return 0;
		}
		/* the status should be 0 == "idle" */
		if( status_xilinx != 0 ) {
			snd_printk( KERN_ERR "xilinx load error ! status = %d\n", status_xilinx);
			return -EIO; /* modprob -r may help ? */
		}

		/* check xilinx validity */
		snd_assert(((u32*)(dsp->data))[0]==0xFFFFFFFF, return -EINVAL);
		snd_assert(dsp->size % 4 == 0, return -EINVAL);

		/* set xilinx status to copying */
		writel_be( 1, MIXART_MEM( mgr, MIXART_PSEUDOREG_MXLX_STATUS_OFFSET ));

		/* setup xilinx base address */
		writel_be( MIXART_MOTHERBOARD_XLX_BASE_ADDRESS, MIXART_MEM( mgr,MIXART_PSEUDOREG_MXLX_BASE_ADDR_OFFSET ));
		/* setup code size for xilinx file */
		writel_be( dsp->size, MIXART_MEM( mgr, MIXART_PSEUDOREG_MXLX_SIZE_OFFSET ));

		/* copy xilinx code */
		memcpy_toio(  MIXART_MEM( mgr, MIXART_MOTHERBOARD_XLX_BASE_ADDRESS),  dsp->data,  dsp->size);
    
		/* set xilinx status to copy finished */
		writel_be( 2, MIXART_MEM( mgr, MIXART_PSEUDOREG_MXLX_STATUS_OFFSET ));

		/* return, because no further processing needed */
		return 0;

	case MIXART_MOTHERBOARD_ELF_INDEX:

		if( status_elf == 4 ) {
			snd_printk( KERN_DEBUG "elf file already loaded !\n");
			return 0;
		}

		/* the status should be 0 == "idle" */
		if( status_elf != 0 ) {
			snd_printk( KERN_ERR "elf load error ! status = %d\n", status_elf);
			return -EIO; /* modprob -r may help ? */
		}

		/* wait for xilinx status == 4 */
		err = mixart_wait_nice_for_register_value( mgr, MIXART_PSEUDOREG_MXLX_STATUS_OFFSET, 1, 4, 500); /* 5sec */
		if (err < 0) {
			snd_printk( KERN_ERR "xilinx was not loaded or could not be started\n");
			return err;
		}

		/* init some data on the card */
		writel_be( 0, MIXART_MEM( mgr, MIXART_PSEUDOREG_BOARDNUMBER ) ); /* set miXart boardnumber to 0 */
		writel_be( 0, MIXART_MEM( mgr, MIXART_FLOWTABLE_PTR ) );         /* reset pointer to flow table on miXart */

		/* set elf status to copying */
		writel_be( 1, MIXART_MEM( mgr, MIXART_PSEUDOREG_ELF_STATUS_OFFSET ));

		/* process the copying of the elf packets */
		err = mixart_load_elf( mgr, dsp );
		if (err < 0) return err;

		/* set elf status to copy finished */
		writel_be( 2, MIXART_MEM( mgr, MIXART_PSEUDOREG_ELF_STATUS_OFFSET ));

		/* wait for elf status == 4 */
		err = mixart_wait_nice_for_register_value( mgr, MIXART_PSEUDOREG_ELF_STATUS_OFFSET, 1, 4, 300); /* 3sec */
		if (err < 0) {
			snd_printk( KERN_ERR "elf could not be started\n");
			return err;
		}

		/* miXart waits at this point on the pointer to the flow table */
		writel_be( (u32)mgr->flowinfo.addr, MIXART_MEM( mgr, MIXART_FLOWTABLE_PTR ) ); /* give pointer of flow table to miXart */

		return 0;  /* return, another xilinx file has to be loaded before */

	case MIXART_AESEBUBOARD_XLX_INDEX:
	default:

		/* elf and xilinx should be loaded */
		if( (status_elf != 4) || (status_xilinx != 4) ) {
			printk( KERN_ERR "xilinx or elf not successfully loaded\n");
			return -EIO; /* modprob -r may help ? */
		}

		/* wait for daughter detection != 0 */
		err = mixart_wait_nice_for_register_value( mgr, MIXART_PSEUDOREG_DBRD_PRESENCE_OFFSET, 0, 0, 30); /* 300msec */
		if (err < 0) {
			snd_printk( KERN_ERR "error starting elf file\n");
			return err;
		}

		/* the board type can now be retrieved */
		mgr->board_type = (DAUGHTER_TYPE_MASK & readl_be( MIXART_MEM( mgr, MIXART_PSEUDOREG_DBRD_TYPE_OFFSET)));

		if (mgr->board_type == MIXART_DAUGHTER_TYPE_NONE)
			break;  /* no daughter board; the file does not have to be loaded, continue after the switch */

		/* only if aesebu daughter board presence (elf code must run)  */ 
		if (mgr->board_type != MIXART_DAUGHTER_TYPE_AES )
			return -EINVAL;

		/* daughter should be idle */
		if( status_daught != 0 ) {
			printk( KERN_ERR "daughter load error ! status = %d\n", status_daught);
			return -EIO; /* modprob -r may help ? */
		}
 
		/* check daughterboard xilinx validity */
		snd_assert(((u32*)(dsp->data))[0]==0xFFFFFFFF, return -EINVAL);
		snd_assert(dsp->size % 4 == 0, return -EINVAL);

		/* inform mixart about the size of the file */
		writel_be( dsp->size, MIXART_MEM( mgr, MIXART_PSEUDOREG_DXLX_SIZE_OFFSET ));

		/* set daughterboard status to 1 */
		writel_be( 1, MIXART_MEM( mgr, MIXART_PSEUDOREG_DXLX_STATUS_OFFSET ));

		/* wait for status == 2 */
		err = mixart_wait_nice_for_register_value( mgr, MIXART_PSEUDOREG_DXLX_STATUS_OFFSET, 1, 2, 30); /* 300msec */
		if (err < 0) {
			snd_printk( KERN_ERR "daughter board load error\n");
			return err;
		}

		/* get the address where to write the file */
		val = readl_be( MIXART_MEM( mgr, MIXART_PSEUDOREG_DXLX_BASE_ADDR_OFFSET ));
		snd_assert(val != 0, return -EINVAL);

		/* copy daughterboard xilinx code */
		memcpy_toio(  MIXART_MEM( mgr, val),  dsp->data,  dsp->size);

		/* set daughterboard status to 4 */
		writel_be( 4, MIXART_MEM( mgr, MIXART_PSEUDOREG_DXLX_STATUS_OFFSET ));

		/* continue with init */
		break;
	} /* end of switch file index*/

        /* wait for daughter status == 3 */
        err = mixart_wait_nice_for_register_value( mgr, MIXART_PSEUDOREG_DXLX_STATUS_OFFSET, 1, 3, 300); /* 3sec */
        if (err < 0) {
		snd_printk( KERN_ERR "daughter board could not be initialised\n");
		return err;
	}

	/* init mailbox (communication with embedded) */
	snd_mixart_init_mailbox(mgr);

	/* first communication with embedded */
	err = mixart_first_init(mgr);
        if (err < 0) {
		snd_printk( KERN_ERR "miXart could not be set up\n");
		return err;
	}

       	/* create devices and mixer in accordance with HW options*/
        for (card_index = 0; card_index < mgr->num_cards; card_index++) {
		mixart_t *chip = mgr->chip[card_index];

		if ((err = snd_mixart_create_pcm(chip)) < 0)
			return err;

		if (card_index == 0) {
			if ((err = snd_mixart_create_mixer(chip->mgr)) < 0)
	        		return err;
		}

		if ((err = snd_card_register(chip->card)) < 0)
			return err;
	};

	snd_printdd("miXart firmware downloaded and successfully set up\n");

	return 0;
}


#if defined(CONFIG_FW_LOADER) || defined(CONFIG_FW_LOADER_MODULE)
#if !defined(CONFIG_USE_MIXARTLOADER) && !defined(CONFIG_SND_MIXART) /* built-in kernel */
#define SND_MIXART_FW_LOADER	/* use the standard firmware loader */
#endif
#endif

#ifdef SND_MIXART_FW_LOADER

int snd_mixart_setup_firmware(mixart_mgr_t *mgr)
{
	static char *fw_files[3] = {
		"miXart8.xlx", "miXart8.elf", "miXart8AES.xlx"
	};
	char path[32];

	const struct firmware *fw_entry;
	int i, err;

	for (i = 0; i < 3; i++) {
		sprintf(path, "mixart/%s", fw_files[i]);
		if (request_firmware(&fw_entry, path, &mgr->pci->dev)) {
			snd_printk(KERN_ERR "miXart: can't load firmware %s\n", path);
			return -ENOENT;
		}
		/* fake hwdep dsp record */
		err = mixart_dsp_load(mgr, i, fw_entry);
		release_firmware(fw_entry);
		if (err < 0)
			return err;
		mgr->dsp_loaded |= 1 << i;
	}
	return 0;
}


#else /* old style firmware loading */

/* miXart hwdep interface id string */
#define SND_MIXART_HWDEP_ID       "miXart Loader"

static int mixart_hwdep_open(snd_hwdep_t *hw, struct file *file)
{
	return 0;
}

static int mixart_hwdep_release(snd_hwdep_t *hw, struct file *file)
{
	return 0;
}

static int mixart_hwdep_dsp_status(snd_hwdep_t *hw, snd_hwdep_dsp_status_t *info)
{
	mixart_mgr_t *mgr = hw->private_data;

	strcpy(info->id, "miXart");
        info->num_dsps = MIXART_HARDW_FILES_MAX_INDEX;

	if (mgr->dsp_loaded & (1 <<  MIXART_MOTHERBOARD_ELF_INDEX))
		info->chip_ready = 1;

	info->version = MIXART_DRIVER_VERSION;
	return 0;
}

static int mixart_hwdep_dsp_load(snd_hwdep_t *hw, snd_hwdep_dsp_image_t *dsp)
{
	mixart_mgr_t* mgr = hw->private_data;
	struct firmware fw;
	int err;

	fw.size = dsp->length;
	fw.data = vmalloc(dsp->length);
	if (! fw.data) {
		snd_printk(KERN_ERR "miXart: cannot allocate image size %d\n",
			   (int)dsp->length);
		return -ENOMEM;
	}
	if (copy_from_user(fw.data, dsp->image, dsp->length)) {
		vfree(fw.data);
		return -EFAULT;
	}
	err = mixart_dsp_load(mgr, dsp->index, &fw);
	vfree(fw.data);
	if (err < 0)
		return err;
	mgr->dsp_loaded |= 1 << dsp->index;
	return err;
}

int snd_mixart_setup_firmware(mixart_mgr_t *mgr)
{
	int err;
	snd_hwdep_t *hw;

	/* only create hwdep interface for first cardX (see "index" module parameter)*/
	if ((err = snd_hwdep_new(mgr->chip[0]->card, SND_MIXART_HWDEP_ID, 0, &hw)) < 0)
		return err;

	hw->iface = SNDRV_HWDEP_IFACE_MIXART;
	hw->private_data = mgr;
	hw->ops.open = mixart_hwdep_open;
	hw->ops.release = mixart_hwdep_release;
	hw->ops.dsp_status = mixart_hwdep_dsp_status;
	hw->ops.dsp_load = mixart_hwdep_dsp_load;
	hw->exclusive = 1;
	sprintf(hw->name,  SND_MIXART_HWDEP_ID);
	mgr->dsp_loaded = 0;

	return snd_card_register(mgr->chip[0]->card);
}

#endif /* SND_MIXART_FW_LOADER */