riptide.c

linux 内核源代码

	int openstreams;

	int irq;
	unsigned long port;
	unsigned short mpuaddr;
	unsigned short opladdr;
#ifdef SUPPORT_JOYSTICK
	unsigned short gameaddr;
#endif
	struct resource *res_port;

	unsigned short device_id;

	union firmware_version firmware;

	spinlock_t lock;
	struct tasklet_struct riptide_tq;
	struct snd_info_entry *proc_entry;

	unsigned long received_irqs;
	unsigned long handled_irqs;
#ifdef CONFIG_PM
	int in_suspend;
#endif
};

struct sgd {			/* scatter gather desriptor */
	u32 dwNextLink;
	u32 dwSegPtrPhys;
	u32 dwSegLen;
	u32 dwStat_Ctl;
};

struct pcmhw {			/* pcm descriptor */
	struct lbuspath paths;
	unsigned char *lbuspath;
	unsigned char source;
	unsigned char intdec[2];
	unsigned char mixer;
	unsigned char id;
	unsigned char state;
	unsigned int rate;
	unsigned int channels;
	snd_pcm_format_t format;
	struct snd_dma_buffer sgdlist;
	struct sgd *sgdbuf;
	unsigned int size;
	unsigned int pages;
	unsigned int oldpos;
	unsigned int pointer;
};

#define CMDRET_ZERO (union cmdret){{(u32)0, (u32) 0}}

static int sendcmd(struct cmdif *cif, u32 flags, u32 cmd, u32 parm,
		   union cmdret *ret);
static int getsourcesink(struct cmdif *cif, unsigned char source,
			 unsigned char sink, unsigned char *a,
			 unsigned char *b);
static int snd_riptide_initialize(struct snd_riptide *chip);
static int riptide_reset(struct cmdif *cif, struct snd_riptide *chip);

/*
 */

static struct pci_device_id snd_riptide_ids[] = {
	{
	 .vendor = 0x127a,.device = 0x4310,
	 .subvendor = PCI_ANY_ID,.subdevice = PCI_ANY_ID,
	 },
	{
	 .vendor = 0x127a,.device = 0x4320,
	 .subvendor = PCI_ANY_ID,.subdevice = PCI_ANY_ID,
	 },
	{
	 .vendor = 0x127a,.device = 0x4330,
	 .subvendor = PCI_ANY_ID,.subdevice = PCI_ANY_ID,
	 },
	{
	 .vendor = 0x127a,.device = 0x4340,
	 .subvendor = PCI_ANY_ID,.subdevice = PCI_ANY_ID,
	 },
	{0,},
};

#ifdef SUPPORT_JOYSTICK
static struct pci_device_id snd_riptide_joystick_ids[] __devinitdata = {
	{
	 .vendor = 0x127a,.device = 0x4312,
	 .subvendor = PCI_ANY_ID,.subdevice = PCI_ANY_ID,
	 },
	{
	 .vendor = 0x127a,.device = 0x4322,
	 .subvendor = PCI_ANY_ID,.subdevice = PCI_ANY_ID,
	 },
	{.vendor = 0x127a,.device = 0x4332,
	 .subvendor = PCI_ANY_ID,.subdevice = PCI_ANY_ID,
	 },
	{.vendor = 0x127a,.device = 0x4342,
	 .subvendor = PCI_ANY_ID,.subdevice = PCI_ANY_ID,
	 },
	{0,},
};
#endif

MODULE_DEVICE_TABLE(pci, snd_riptide_ids);

/*
 */

static unsigned char lbusin2out[E2SINK_MAX + 1][2] = {
	{NO_OUT, LS_NONE1}, {NO_OUT, LS_NONE2}, {NO_OUT, LS_NONE1}, {NO_OUT,
								     LS_NONE2},
	{NO_OUT, LS_NONE1}, {NO_OUT, LS_NONE2}, {NO_OUT, LS_NONE1}, {NO_OUT,
								     LS_NONE2},
	{INTER0_OUT, LS_SRC_INTERPOLATOR}, {INTER1_OUT, LS_SRC_INTERPOLATOR},
	{INTER2_OUT, LS_SRC_INTERPOLATOR}, {INTER3_OUT, LS_SRC_INTERPOLATOR},
	{INTER4_OUT, LS_SRC_INTERPOLATOR}, {INTERM0_OUT, LS_SRC_INTERPOLATORM},
	{INTERM1_OUT, LS_SRC_INTERPOLATORM}, {INTERM2_OUT,
					      LS_SRC_INTERPOLATORM},
	{INTERM3_OUT, LS_SRC_INTERPOLATORM}, {INTERM4_OUT,
					      LS_SRC_INTERPOLATORM},
	{INTERM5_OUT, LS_SRC_INTERPOLATORM}, {INTERM6_OUT,
					      LS_SRC_INTERPOLATORM},
	{DECIMM0_OUT, LS_SRC_DECIMATORM}, {DECIMM1_OUT, LS_SRC_DECIMATORM},
	{DECIMM2_OUT, LS_SRC_DECIMATORM}, {DECIMM3_OUT, LS_SRC_DECIMATORM},
	{DECIM0_OUT, LS_SRC_DECIMATOR}, {SR3_4_OUT, LS_NONE1}, {NO_OUT,
								LS_NONE2},
	{NO_OUT, LS_NONE1}, {NO_OUT, LS_NONE2}, {NO_OUT, LS_NONE1},
	{DIGITAL_MIXER_OUT0, LS_MIXER_IN}, {DIGITAL_MIXER_OUT0, LS_MIXER_IN},
	{DIGITAL_MIXER_OUT0, LS_MIXER_IN}, {DIGITAL_MIXER_OUT0, LS_MIXER_IN},
	{DIGITAL_MIXER_OUT0, LS_MIXER_IN}, {DIGITAL_MIXER_OUT0, LS_MIXER_IN},
	{DIGITAL_MIXER_OUT0, LS_MIXER_IN}, {DIGITAL_MIXER_OUT0, LS_MIXER_IN},
	{DIGITAL_MIXER_OUT0, LS_MIXER_IN}, {DIGITAL_MIXER_OUT0, LS_MIXER_IN},
	{DIGITAL_MIXER_OUT0, LS_MIXER_IN}, {DIGITAL_MIXER_OUT0, LS_MIXER_IN},
	{GAINFUNC0_OUT, LS_MIXER_GAIN_FUNCTION}, {GAINFUNC1_OUT,
						  LS_MIXER_GAIN_FUNCTION},
	{GAINFUNC2_OUT, LS_MIXER_GAIN_FUNCTION}, {GAINFUNC3_OUT,
						  LS_MIXER_GAIN_FUNCTION},
	{GAINFUNC4_OUT, LS_MIXER_GAIN_FUNCTION}, {SOFTMODEMTX, LS_NONE1},
	{SPLITTER0_OUTL, LS_SRC_SPLITTER}, {SPLITTER1_OUTL, LS_SRC_SPLITTER},
	{SPLITTER2_OUTL, LS_SRC_SPLITTER}, {SPLITTER3_OUTL, LS_SRC_SPLITTER},
	{MERGER0_OUT, LS_SRC_MERGER}, {MERGER0_OUT, LS_SRC_MERGER},
	{MERGER1_OUT, LS_SRC_MERGER},
	{MERGER1_OUT, LS_SRC_MERGER}, {MERGER2_OUT, LS_SRC_MERGER},
	{MERGER2_OUT, LS_SRC_MERGER},
	{MERGER3_OUT, LS_SRC_MERGER}, {MERGER3_OUT, LS_SRC_MERGER}, {NO_OUT,
								     LS_NONE2},
};

static unsigned char lbus_play_opl3[] = {
	DIGITAL_MIXER_IN0 + FM_MIXER, 0xff
};
static unsigned char lbus_play_modem[] = {
	DIGITAL_MIXER_IN0 + MODEM_MIXER, 0xff
};
static unsigned char lbus_play_i2s[] = {
	INTER0_IN + I2S_INTDEC, DIGITAL_MIXER_IN0 + I2S_MIXER, 0xff
};
static unsigned char lbus_play_out[] = {
	PDAC2ACLNK, 0xff
};
static unsigned char lbus_play_outhp[] = {
	HNDSPK2ACLNK, 0xff
};
static unsigned char lbus_play_noconv1[] = {
	DIGITAL_MIXER_IN0, 0xff
};
static unsigned char lbus_play_stereo1[] = {
	INTER0_IN, DIGITAL_MIXER_IN0, 0xff
};
static unsigned char lbus_play_mono1[] = {
	INTERM0_IN, DIGITAL_MIXER_IN0, 0xff
};
static unsigned char lbus_play_noconv2[] = {
	DIGITAL_MIXER_IN1, 0xff
};
static unsigned char lbus_play_stereo2[] = {
	INTER1_IN, DIGITAL_MIXER_IN1, 0xff
};
static unsigned char lbus_play_mono2[] = {
	INTERM1_IN, DIGITAL_MIXER_IN1, 0xff
};
static unsigned char lbus_play_noconv3[] = {
	DIGITAL_MIXER_IN2, 0xff
};
static unsigned char lbus_play_stereo3[] = {
	INTER2_IN, DIGITAL_MIXER_IN2, 0xff
};
static unsigned char lbus_play_mono3[] = {
	INTERM2_IN, DIGITAL_MIXER_IN2, 0xff
};
static unsigned char lbus_rec_noconv1[] = {
	LBUS2ARM_FIFO5, 0xff
};
static unsigned char lbus_rec_stereo1[] = {
	DECIM0_IN, LBUS2ARM_FIFO5, 0xff
};
static unsigned char lbus_rec_mono1[] = {
	DECIMM3_IN, LBUS2ARM_FIFO5, 0xff
};

static unsigned char play_ids[] = { 4, 1, 2, };
static unsigned char play_sources[] = {
	ARM2LBUS_FIFO4, ARM2LBUS_FIFO1, ARM2LBUS_FIFO2,
};
static struct lbuspath lbus_play_paths[] = {
	{
	 .noconv = lbus_play_noconv1,
	 .stereo = lbus_play_stereo1,
	 .mono = lbus_play_mono1,
	 },
	{
	 .noconv = lbus_play_noconv2,
	 .stereo = lbus_play_stereo2,
	 .mono = lbus_play_mono2,
	 },
	{
	 .noconv = lbus_play_noconv3,
	 .stereo = lbus_play_stereo3,
	 .mono = lbus_play_mono3,
	 },
};
static struct lbuspath lbus_rec_path = {
	.noconv = lbus_rec_noconv1,
	.stereo = lbus_rec_stereo1,
	.mono = lbus_rec_mono1,
};

#define FIRMWARE_VERSIONS 1
static union firmware_version firmware_versions[] = {
	{
		.firmware = {
			.ASIC = 3,
			.CODEC = 2,
			.AUXDSP = 3,
			.PROG = 773,
		},
	},
};

static u32 atoh(unsigned char *in, unsigned int len)
{
	u32 sum = 0;
	unsigned int mult = 1;
	unsigned char c;

	while (len) {
		c = in[len - 1];
		if ((c >= '0') && (c <= '9'))
			sum += mult * (c - '0');
		else if ((c >= 'A') && (c <= 'F'))
			sum += mult * (c - ('A' - 10));
		else if ((c >= 'a') && (c <= 'f'))
			sum += mult * (c - ('a' - 10));
		mult *= 16;
		--len;
	}
	return sum;
}

static int senddata(struct cmdif *cif, unsigned char *in, u32 offset)
{
	u32 addr;
	u32 data;
	u32 i;
	unsigned char *p;

	i = atoh(&in[1], 2);
	addr = offset + atoh(&in[3], 4);
	if (SEND_SMEM(cif, 0, addr) != 0)
		return -EACCES;
	p = in + 9;
	while (i) {
		data = atoh(p, 8);
		if (SEND_WMEM(cif, 2,
			      ((data & 0x0f0f0f0f) << 4) | ((data & 0xf0f0f0f0)
							    >> 4)))
			return -EACCES;
		i -= 4;
		p += 8;
	}
	return 0;
}

static int loadfirmware(struct cmdif *cif, unsigned char *img,
			unsigned int size)
{
	unsigned char *in;
	u32 laddr, saddr, t, val;
	int err = 0;

	laddr = saddr = 0;
	while (size > 0 && err == 0) {
		in = img;
		if (in[0] == ':') {
			t = atoh(&in[7], 2);
			switch (t) {
			case DATA_REC:
				err = senddata(cif, in, laddr + saddr);
				break;
			case EXT_SEG_ADDR_REC:
				saddr = atoh(&in[9], 4) << 4;
				break;
			case EXT_LIN_ADDR_REC:
				laddr = atoh(&in[9], 4) << 16;
				break;
			case EXT_GOTO_CMD_REC:
				val = atoh(&in[9], 8);
				if (SEND_GOTO(cif, val) != 0)
					err = -EACCES;
				break;
			case EXT_END_OF_FILE:
				size = 0;
				break;
			default:
				break;
			}
			while (size > 0) {
				size--;
				if (*img++ == '\n')
					break;
			}
		}
	}
	snd_printdd("load firmware return %d\n", err);
	return err;
}

static void
alloclbuspath(struct cmdif *cif, unsigned char source,
	      unsigned char *path, unsigned char *mixer, unsigned char *s)
{
	while (*path != 0xff) {
		unsigned char sink, type;

		sink = *path & (~SPLIT_PATH);
		if (sink != E2SINK_MAX) {
			snd_printdd("alloc path 0x%x->0x%x\n", source, sink);
			SEND_PSEL(cif, source, sink);
			source = lbusin2out[sink][0];
			type = lbusin2out[sink][1];
			if (type == LS_MIXER_IN) {
				if (mixer)
					*mixer = sink - DIGITAL_MIXER_IN0;
			}
			if (type == LS_SRC_DECIMATORM ||
			    type == LS_SRC_DECIMATOR ||
			    type == LS_SRC_INTERPOLATORM ||
			    type == LS_SRC_INTERPOLATOR) {
				if (s) {
					if (s[0] != 0xff)
						s[1] = sink;
					else
						s[0] = sink;
				}
			}
		}
		if (*path++ & SPLIT_PATH) {
			unsigned char *npath = path;

			while (*npath != 0xff)
				npath++;
			alloclbuspath(cif, source + 1, ++npath, mixer, s);
		}
	}
}

static void
freelbuspath(struct cmdif *cif, unsigned char source, unsigned char *path)
{
	while (*path != 0xff) {
		unsigned char sink;

		sink = *path & (~SPLIT_PATH);
		if (sink != E2SINK_MAX) {
			snd_printdd("free path 0x%x->0x%x\n", source, sink);
			SEND_PCLR(cif, source, sink);
			source = lbusin2out[sink][0];
		}
		if (*path++ & SPLIT_PATH) {
			unsigned char *npath = path;

			while (*npath != 0xff)
				npath++;
			freelbuspath(cif, source + 1, ++npath);
		}
	}
}

static int writearm(struct cmdif *cif, u32 addr, u32 data, u32 mask)
{
	union cmdret rptr = CMDRET_ZERO;
	unsigned int i = MAX_WRITE_RETRY;
	int flag = 1;

	SEND_RMEM(cif, 0x02, addr, &rptr);
	rptr.retlongs[0] &= (~mask);

	while (--i) {
		SEND_SMEM(cif, 0x01, addr);
		SEND_WMEM(cif, 0x02, (rptr.retlongs[0] | data));
		SEND_RMEM(cif, 0x02, addr, &rptr);
		if ((rptr.retlongs[0] & data) == data) {
			flag = 0;
			break;
		} else
			rptr.retlongs[0] &= ~mask;
	}
	snd_printdd("send arm 0x%x 0x%x 0x%x return %d\n", addr, data, mask,
		    flag);
	return flag;
}

static int sendcmd(struct cmdif *cif, u32 flags, u32 cmd, u32 parm,
		   union cmdret *ret)
{
	int i, j;
	int err;
	unsigned int time = 0;
	unsigned long irqflags;
	struct riptideport *hwport;
	struct cmdport *cmdport = NULL;

	snd_assert(cif, return -EINVAL);

	hwport = cif->hwport;
	if (cif->errcnt > MAX_ERROR_COUNT) {
		if (cif->is_reset) {
			snd_printk(KERN_ERR
				   "Riptide: Too many failed cmds, reinitializing\n");
			if (riptide_reset(cif, NULL) == 0) {
				cif->errcnt = 0;
				return -EIO;
			}
		}
		snd_printk(KERN_ERR "Riptide: Initialization failed.\n");
		return -EINVAL;
	}
	if (ret) {
		ret->retlongs[0] = 0;
		ret->retlongs[1] = 0;
	}
	i = 0;