[qemu.git] / hw / pl080.c

/*
 * Arm PrimeCell PL080/PL081 DMA controller
 *
 * Copyright (c) 2006 CodeSourcery.
 * Written by Paul Brook
 *
 * This code is licensed under the GPL.
 */

#include "sysbus.h"

#define PL080_MAX_CHANNELS 8
#define PL080_CONF_E    0x1
#define PL080_CONF_M1   0x2
#define PL080_CONF_M2   0x4

#define PL080_CCONF_H   0x40000
#define PL080_CCONF_A   0x20000
#define PL080_CCONF_L   0x10000
#define PL080_CCONF_ITC 0x08000
#define PL080_CCONF_IE  0x04000
#define PL080_CCONF_E   0x00001

#define PL080_CCTRL_I   0x80000000
#define PL080_CCTRL_DI  0x08000000
#define PL080_CCTRL_SI  0x04000000
#define PL080_CCTRL_D   0x02000000
#define PL080_CCTRL_S   0x01000000

typedef struct {
    uint32_t src;
    uint32_t dest;
    uint32_t lli;
    uint32_t ctrl;
    uint32_t conf;
} pl080_channel;

typedef struct {
    SysBusDevice busdev;
    MemoryRegion iomem;
    uint8_t tc_int;
    uint8_t tc_mask;
    uint8_t err_int;
    uint8_t err_mask;
    uint32_t conf;
    uint32_t sync;
    uint32_t req_single;
    uint32_t req_burst;
    pl080_channel chan[PL080_MAX_CHANNELS];
    int nchannels;
    /* Flag to avoid recursive DMA invocations.  */
    int running;
    qemu_irq irq;
} pl080_state;

static const VMStateDescription vmstate_pl080_channel = {
    .name = "pl080_channel",
    .version_id = 1,
    .minimum_version_id = 1,
    .fields = (VMStateField[]) {
        VMSTATE_UINT32(src, pl080_channel),
        VMSTATE_UINT32(dest, pl080_channel),
        VMSTATE_UINT32(lli, pl080_channel),
        VMSTATE_UINT32(ctrl, pl080_channel),
        VMSTATE_UINT32(conf, pl080_channel),
        VMSTATE_END_OF_LIST()
    }
};

static const VMStateDescription vmstate_pl080 = {
    .name = "pl080",
    .version_id = 1,
    .minimum_version_id = 1,
    .fields = (VMStateField[]) {
        VMSTATE_UINT8(tc_int, pl080_state),
        VMSTATE_UINT8(tc_mask, pl080_state),
        VMSTATE_UINT8(err_int, pl080_state),
        VMSTATE_UINT8(err_mask, pl080_state),
        VMSTATE_UINT32(conf, pl080_state),
        VMSTATE_UINT32(sync, pl080_state),
        VMSTATE_UINT32(req_single, pl080_state),
        VMSTATE_UINT32(req_burst, pl080_state),
        VMSTATE_UINT8(tc_int, pl080_state),
        VMSTATE_UINT8(tc_int, pl080_state),
        VMSTATE_UINT8(tc_int, pl080_state),
        VMSTATE_STRUCT_ARRAY(chan, pl080_state, PL080_MAX_CHANNELS,
                             1, vmstate_pl080_channel, pl080_channel),
        VMSTATE_INT32(running, pl080_state),
        VMSTATE_END_OF_LIST()
    }
};

static const unsigned char pl080_id[] =
{ 0x80, 0x10, 0x04, 0x0a, 0x0d, 0xf0, 0x05, 0xb1 };

static const unsigned char pl081_id[] =
{ 0x81, 0x10, 0x04, 0x0a, 0x0d, 0xf0, 0x05, 0xb1 };

static void pl080_update(pl080_state *s)
{
    if ((s->tc_int & s->tc_mask)
            || (s->err_int & s->err_mask))
        qemu_irq_raise(s->irq);
    else
        qemu_irq_lower(s->irq);
}

static void pl080_run(pl080_state *s)
{
    int c;
    int flow;
    pl080_channel *ch;
    int swidth;
    int dwidth;
    int xsize;
    int n;
    int src_id;
    int dest_id;
    int size;
    uint8_t buff[4];
    uint32_t req;

    s->tc_mask = 0;
    for (c = 0; c < s->nchannels; c++) {
        if (s->chan[c].conf & PL080_CCONF_ITC)
            s->tc_mask |= 1 << c;
        if (s->chan[c].conf & PL080_CCONF_IE)
            s->err_mask |= 1 << c;
    }

    if ((s->conf & PL080_CONF_E) == 0)
        return;

hw_error("DMA active\n");
    /* If we are already in the middle of a DMA operation then indicate that
       there may be new DMA requests and return immediately.  */
    if (s->running) {
        s->running++;
        return;
    }
    s->running = 1;
    while (s->running) {
        for (c = 0; c < s->nchannels; c++) {
            ch = &s->chan[c];
again:
            /* Test if thiws channel has any pending DMA requests.  */
            if ((ch->conf & (PL080_CCONF_H | PL080_CCONF_E))
                    != PL080_CCONF_E)
                continue;
            flow = (ch->conf >> 11) & 7;
            if (flow >= 4) {
                hw_error(
                    "pl080_run: Peripheral flow control not implemented\n");
            }
            src_id = (ch->conf >> 1) & 0x1f;
            dest_id = (ch->conf >> 6) & 0x1f;
            size = ch->ctrl & 0xfff;
            req = s->req_single | s->req_burst;
            switch (flow) {
            case 0:
                break;
            case 1:
                if ((req & (1u << dest_id)) == 0)
                    size = 0;
                break;
            case 2:
                if ((req & (1u << src_id)) == 0)
                    size = 0;
                break;
            case 3:
                if ((req & (1u << src_id)) == 0
                        || (req & (1u << dest_id)) == 0)
                    size = 0;
                break;
            }
            if (!size)
                continue;

            /* Transfer one element.  */
            /* ??? Should transfer multiple elements for a burst request.  */
            /* ??? Unclear what the proper behavior is when source and
               destination widths are different.  */
            swidth = 1 << ((ch->ctrl >> 18) & 7);
            dwidth = 1 << ((ch->ctrl >> 21) & 7);
            for (n = 0; n < dwidth; n+= swidth) {
                cpu_physical_memory_read(ch->src, buff + n, swidth);
                if (ch->ctrl & PL080_CCTRL_SI)
                    ch->src += swidth;
            }
            xsize = (dwidth < swidth) ? swidth : dwidth;
            /* ??? This may pad the value incorrectly for dwidth < 32.  */
            for (n = 0; n < xsize; n += dwidth) {
                cpu_physical_memory_write(ch->dest + n, buff + n, dwidth);
                if (ch->ctrl & PL080_CCTRL_DI)
                    ch->dest += swidth;
            }

            size--;
            ch->ctrl = (ch->ctrl & 0xfffff000) | size;
            if (size == 0) {
                /* Transfer complete.  */
                if (ch->lli) {
                    ch->src = ldl_le_phys(ch->lli);
                    ch->dest = ldl_le_phys(ch->lli + 4);
                    ch->ctrl = ldl_le_phys(ch->lli + 12);
                    ch->lli = ldl_le_phys(ch->lli + 8);
                } else {
                    ch->conf &= ~PL080_CCONF_E;
                }
                if (ch->ctrl & PL080_CCTRL_I) {
                    s->tc_int |= 1 << c;
                }
            }
            goto again;
        }
        if (--s->running)
            s->running = 1;
    }
}

static uint64_t pl080_read(void *opaque, target_phys_addr_t offset,
                           unsigned size)
{
    pl080_state *s = (pl080_state *)opaque;
    uint32_t i;
    uint32_t mask;

    if (offset >= 0xfe0 && offset < 0x1000) {
        if (s->nchannels == 8) {
            return pl080_id[(offset - 0xfe0) >> 2];
        } else {
            return pl081_id[(offset - 0xfe0) >> 2];
        }
    }
    if (offset >= 0x100 && offset < 0x200) {
        i = (offset & 0xe0) >> 5;
        if (i >= s->nchannels)
            goto bad_offset;
        switch (offset >> 2) {
        case 0: /* SrcAddr */
            return s->chan[i].src;
        case 1: /* DestAddr */
            return s->chan[i].dest;
        case 2: /* LLI */
            return s->chan[i].lli;
        case 3: /* Control */
            return s->chan[i].ctrl;
        case 4: /* Configuration */
            return s->chan[i].conf;
        default:
            goto bad_offset;
        }
    }
    switch (offset >> 2) {
    case 0: /* IntStatus */
        return (s->tc_int & s->tc_mask) | (s->err_int & s->err_mask);
    case 1: /* IntTCStatus */
        return (s->tc_int & s->tc_mask);
    case 3: /* IntErrorStatus */
        return (s->err_int & s->err_mask);
    case 5: /* RawIntTCStatus */
        return s->tc_int;
    case 6: /* RawIntErrorStatus */
        return s->err_int;
    case 7: /* EnbldChns */
        mask = 0;
        for (i = 0; i < s->nchannels; i++) {
            if (s->chan[i].conf & PL080_CCONF_E)
                mask |= 1 << i;
        }
        return mask;
    case 8: /* SoftBReq */
    case 9: /* SoftSReq */
    case 10: /* SoftLBReq */
    case 11: /* SoftLSReq */
        /* ??? Implement these. */
        return 0;
    case 12: /* Configuration */
        return s->conf;
    case 13: /* Sync */
        return s->sync;
    default:
    bad_offset:
        hw_error("pl080_read: Bad offset %x\n", (int)offset);
        return 0;
    }
}

static void pl080_write(void *opaque, target_phys_addr_t offset,
                        uint64_t value, unsigned size)
{
    pl080_state *s = (pl080_state *)opaque;
    int i;

    if (offset >= 0x100 && offset < 0x200) {
        i = (offset & 0xe0) >> 5;
        if (i >= s->nchannels)
            goto bad_offset;
        switch (offset >> 2) {
        case 0: /* SrcAddr */
            s->chan[i].src = value;
            break;
        case 1: /* DestAddr */
            s->chan[i].dest = value;
            break;
        case 2: /* LLI */
            s->chan[i].lli = value;
            break;
        case 3: /* Control */
            s->chan[i].ctrl = value;
            break;
        case 4: /* Configuration */
            s->chan[i].conf = value;
            pl080_run(s);
            break;
        }
    }
    switch (offset >> 2) {
    case 2: /* IntTCClear */
        s->tc_int &= ~value;
        break;
    case 4: /* IntErrorClear */
        s->err_int &= ~value;
        break;
    case 8: /* SoftBReq */
    case 9: /* SoftSReq */
    case 10: /* SoftLBReq */
    case 11: /* SoftLSReq */
        /* ??? Implement these.  */
        hw_error("pl080_write: Soft DMA not implemented\n");
        break;
    case 12: /* Configuration */
        s->conf = value;
        if (s->conf & (PL080_CONF_M1 | PL080_CONF_M1)) {
            hw_error("pl080_write: Big-endian DMA not implemented\n");
        }
        pl080_run(s);
        break;
    case 13: /* Sync */
        s->sync = value;
        break;
    default:
    bad_offset:
        hw_error("pl080_write: Bad offset %x\n", (int)offset);
    }
    pl080_update(s);
}

static const MemoryRegionOps pl080_ops = {
    .read = pl080_read,
    .write = pl080_write,
    .endianness = DEVICE_NATIVE_ENDIAN,
};

static int pl08x_init(SysBusDevice *dev, int nchannels)
{
    pl080_state *s = FROM_SYSBUS(pl080_state, dev);

    memory_region_init_io(&s->iomem, &pl080_ops, s, "pl080", 0x1000);
    sysbus_init_mmio(dev, &s->iomem);
    sysbus_init_irq(dev, &s->irq);
    s->nchannels = nchannels;
    return 0;
}

static int pl080_init(SysBusDevice *dev)
{
    return pl08x_init(dev, 8);
}

static int pl081_init(SysBusDevice *dev)
{
    return pl08x_init(dev, 2);
}

static void pl080_class_init(ObjectClass *klass, void *data)
{
    DeviceClass *dc = DEVICE_CLASS(klass);
    SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);

    k->init = pl080_init;
    dc->no_user = 1;
    dc->vmsd = &vmstate_pl080;
}

static TypeInfo pl080_info = {
    .name          = "pl080",
    .parent        = TYPE_SYS_BUS_DEVICE,
    .instance_size = sizeof(pl080_state),
    .class_init    = pl080_class_init,
};

static void pl081_class_init(ObjectClass *klass, void *data)
{
    DeviceClass *dc = DEVICE_CLASS(klass);
    SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);

    k->init = pl081_init;
    dc->no_user = 1;
    dc->vmsd = &vmstate_pl080;
}

static TypeInfo pl081_info = {
    .name          = "pl081",
    .parent        = TYPE_SYS_BUS_DEVICE,
    .instance_size = sizeof(pl080_state),
    .class_init    = pl081_class_init,
};

/* The PL080 and PL081 are the same except for the number of channels
   they implement (8 and 2 respectively).  */
static void pl080_register_types(void)
{
    type_register_static(&pl080_info);
    type_register_static(&pl081_info);
}

type_init(pl080_register_types)
Commit	Line	Data
5fafdf24	1	/*
e69954b9	2	* Arm PrimeCell PL080/PL081 DMA controller
cdbdb648 PB	3	*
	4	* Copyright (c) 2006 CodeSourcery.
	5	* Written by Paul Brook
	6	*
8e31bf38	7	* This code is licensed under the GPL.
cdbdb648 PB	8	*/
cdbdb648 PB	9
b4496b13	10	#include "sysbus.h"
cdbdb648	11
e69954b9	12	#define PL080_MAX_CHANNELS 8
cdbdb648 PB	13	#define PL080_CONF_E 0x1
	14	#define PL080_CONF_M1 0x2
	15	#define PL080_CONF_M2 0x4
	16
	17	#define PL080_CCONF_H 0x40000
	18	#define PL080_CCONF_A 0x20000
	19	#define PL080_CCONF_L 0x10000
	20	#define PL080_CCONF_ITC 0x08000
	21	#define PL080_CCONF_IE 0x04000
	22	#define PL080_CCONF_E 0x00001
	23
	24	#define PL080_CCTRL_I 0x80000000
	25	#define PL080_CCTRL_DI 0x08000000
	26	#define PL080_CCTRL_SI 0x04000000
	27	#define PL080_CCTRL_D 0x02000000
	28	#define PL080_CCTRL_S 0x01000000
	29
	30	typedef struct {
	31	uint32_t src;
	32	uint32_t dest;
	33	uint32_t lli;
	34	uint32_t ctrl;
	35	uint32_t conf;
	36	} pl080_channel;
	37
	38	typedef struct {
b4496b13	39	SysBusDevice busdev;
63b02e04	40	MemoryRegion iomem;
cdbdb648 PB	41	uint8_t tc_int;
	42	uint8_t tc_mask;
	43	uint8_t err_int;
	44	uint8_t err_mask;
	45	uint32_t conf;
	46	uint32_t sync;
	47	uint32_t req_single;
	48	uint32_t req_burst;
e69954b9 PB	49	pl080_channel chan[PL080_MAX_CHANNELS];
e69954b9 PB	50	int nchannels;
cdbdb648 PB	51	/* Flag to avoid recursive DMA invocations. */
cdbdb648 PB	52	int running;
d537cf6c	53	qemu_irq irq;
cdbdb648 PB	54	} pl080_state;
cdbdb648 PB	55
ff175853 PM	56	static const VMStateDescription vmstate_pl080_channel = {
	57	.name = "pl080_channel",
	58	.version_id = 1,
	59	.minimum_version_id = 1,
	60	.fields = (VMStateField[]) {
	61	VMSTATE_UINT32(src, pl080_channel),
	62	VMSTATE_UINT32(dest, pl080_channel),
	63	VMSTATE_UINT32(lli, pl080_channel),
	64	VMSTATE_UINT32(ctrl, pl080_channel),
	65	VMSTATE_UINT32(conf, pl080_channel),
	66	VMSTATE_END_OF_LIST()
	67	}
	68	};
	69
	70	static const VMStateDescription vmstate_pl080 = {
	71	.name = "pl080",
	72	.version_id = 1,
	73	.minimum_version_id = 1,
	74	.fields = (VMStateField[]) {
	75	VMSTATE_UINT8(tc_int, pl080_state),
	76	VMSTATE_UINT8(tc_mask, pl080_state),
	77	VMSTATE_UINT8(err_int, pl080_state),
	78	VMSTATE_UINT8(err_mask, pl080_state),
	79	VMSTATE_UINT32(conf, pl080_state),
	80	VMSTATE_UINT32(sync, pl080_state),
	81	VMSTATE_UINT32(req_single, pl080_state),
	82	VMSTATE_UINT32(req_burst, pl080_state),
	83	VMSTATE_UINT8(tc_int, pl080_state),
	84	VMSTATE_UINT8(tc_int, pl080_state),
	85	VMSTATE_UINT8(tc_int, pl080_state),
	86	VMSTATE_STRUCT_ARRAY(chan, pl080_state, PL080_MAX_CHANNELS,
	87	1, vmstate_pl080_channel, pl080_channel),
	88	VMSTATE_INT32(running, pl080_state),
	89	VMSTATE_END_OF_LIST()
	90	}
	91	};
	92
cdbdb648 PB	93	static const unsigned char pl080_id[] =
	94	{ 0x80, 0x10, 0x04, 0x0a, 0x0d, 0xf0, 0x05, 0xb1 };
	95
e69954b9 PB	96	static const unsigned char pl081_id[] =
	97	{ 0x81, 0x10, 0x04, 0x0a, 0x0d, 0xf0, 0x05, 0xb1 };
	98
cdbdb648 PB	99	static void pl080_update(pl080_state *s)
	100	{
	101	if ((s->tc_int & s->tc_mask)
	102	\|\| (s->err_int & s->err_mask))
d537cf6c	103	qemu_irq_raise(s->irq);
cdbdb648	104	else
d537cf6c	105	qemu_irq_lower(s->irq);
cdbdb648 PB	106	}
	107
	108	static void pl080_run(pl080_state *s)
	109	{
	110	int c;
	111	int flow;
	112	pl080_channel *ch;
	113	int swidth;
	114	int dwidth;
	115	int xsize;
	116	int n;
	117	int src_id;
	118	int dest_id;
	119	int size;
b55266b5	120	uint8_t buff[4];
cdbdb648 PB	121	uint32_t req;
	122
	123	s->tc_mask = 0;
e69954b9	124	for (c = 0; c < s->nchannels; c++) {
cdbdb648 PB	125	if (s->chan[c].conf & PL080_CCONF_ITC)
	126	s->tc_mask \|= 1 << c;
	127	if (s->chan[c].conf & PL080_CCONF_IE)
	128	s->err_mask \|= 1 << c;
	129	}
	130
	131	if ((s->conf & PL080_CONF_E) == 0)
	132	return;
	133
2ac71179	134	hw_error("DMA active\n");
cdbdb648 PB	135	/* If we are already in the middle of a DMA operation then indicate that
	136	there may be new DMA requests and return immediately. */
	137	if (s->running) {
	138	s->running++;
	139	return;
	140	}
	141	s->running = 1;
	142	while (s->running) {
e69954b9	143	for (c = 0; c < s->nchannels; c++) {
cdbdb648 PB	144	ch = &s->chan[c];
	145	again:
	146	/* Test if thiws channel has any pending DMA requests. */
	147	if ((ch->conf & (PL080_CCONF_H \| PL080_CCONF_E))
	148	!= PL080_CCONF_E)
	149	continue;
	150	flow = (ch->conf >> 11) & 7;
	151	if (flow >= 4) {
2ac71179	152	hw_error(
cdbdb648 PB	153	"pl080_run: Peripheral flow control not implemented\n");
	154	}
	155	src_id = (ch->conf >> 1) & 0x1f;
	156	dest_id = (ch->conf >> 6) & 0x1f;
	157	size = ch->ctrl & 0xfff;
	158	req = s->req_single \| s->req_burst;
	159	switch (flow) {
	160	case 0:
	161	break;
	162	case 1:
	163	if ((req & (1u << dest_id)) == 0)
	164	size = 0;
	165	break;
	166	case 2:
	167	if ((req & (1u << src_id)) == 0)
	168	size = 0;
	169	break;
	170	case 3:
	171	if ((req & (1u << src_id)) == 0
	172	\|\| (req & (1u << dest_id)) == 0)
	173	size = 0;
	174	break;
	175	}
	176	if (!size)
	177	continue;
	178
	179	/* Transfer one element. */
	180	/* ??? Should transfer multiple elements for a burst request. */
	181	/* ??? Unclear what the proper behavior is when source and
	182	destination widths are different. */
	183	swidth = 1 << ((ch->ctrl >> 18) & 7);
	184	dwidth = 1 << ((ch->ctrl >> 21) & 7);
	185	for (n = 0; n < dwidth; n+= swidth) {
	186	cpu_physical_memory_read(ch->src, buff + n, swidth);
	187	if (ch->ctrl & PL080_CCTRL_SI)
	188	ch->src += swidth;
	189	}
	190	xsize = (dwidth < swidth) ? swidth : dwidth;
	191	/* ??? This may pad the value incorrectly for dwidth < 32. */
	192	for (n = 0; n < xsize; n += dwidth) {
	193	cpu_physical_memory_write(ch->dest + n, buff + n, dwidth);
	194	if (ch->ctrl & PL080_CCTRL_DI)
	195	ch->dest += swidth;
	196	}
	197
	198	size--;
	199	ch->ctrl = (ch->ctrl & 0xfffff000) \| size;
	200	if (size == 0) {
	201	/* Transfer complete. */
	202	if (ch->lli) {
75b0646f AG	203	ch->src = ldl_le_phys(ch->lli);
	204	ch->dest = ldl_le_phys(ch->lli + 4);
	205	ch->ctrl = ldl_le_phys(ch->lli + 12);
	206	ch->lli = ldl_le_phys(ch->lli + 8);
cdbdb648 PB	207	} else {
	208	ch->conf &= ~PL080_CCONF_E;
	209	}
	210	if (ch->ctrl & PL080_CCTRL_I) {
	211	s->tc_int \|= 1 << c;
	212	}
	213	}
	214	goto again;
	215	}
	216	if (--s->running)
	217	s->running = 1;
	218	}
	219	}
	220
63b02e04 AK	221	static uint64_t pl080_read(void *opaque, target_phys_addr_t offset,
63b02e04 AK	222	unsigned size)
cdbdb648 PB	223	{
	224	pl080_state s = (pl080_state )opaque;
	225	uint32_t i;
	226	uint32_t mask;
	227
cdbdb648	228	if (offset >= 0xfe0 && offset < 0x1000) {
e69954b9 PB	229	if (s->nchannels == 8) {
	230	return pl080_id[(offset - 0xfe0) >> 2];
	231	} else {
	232	return pl081_id[(offset - 0xfe0) >> 2];
	233	}
cdbdb648 PB	234	}
	235	if (offset >= 0x100 && offset < 0x200) {
	236	i = (offset & 0xe0) >> 5;
e69954b9 PB	237	if (i >= s->nchannels)
e69954b9 PB	238	goto bad_offset;
cdbdb648 PB	239	switch (offset >> 2) {
	240	case 0: /* SrcAddr */
	241	return s->chan[i].src;
	242	case 1: /* DestAddr */
	243	return s->chan[i].dest;
	244	case 2: /* LLI */
	245	return s->chan[i].lli;
	246	case 3: /* Control */
	247	return s->chan[i].ctrl;
	248	case 4: /* Configuration */
	249	return s->chan[i].conf;
	250	default:
	251	goto bad_offset;
	252	}
	253	}
	254	switch (offset >> 2) {
	255	case 0: /* IntStatus */
	256	return (s->tc_int & s->tc_mask) \| (s->err_int & s->err_mask);
	257	case 1: /* IntTCStatus */
	258	return (s->tc_int & s->tc_mask);
	259	case 3: /* IntErrorStatus */
	260	return (s->err_int & s->err_mask);
	261	case 5: /* RawIntTCStatus */
	262	return s->tc_int;
	263	case 6: /* RawIntErrorStatus */
	264	return s->err_int;
	265	case 7: /* EnbldChns */
	266	mask = 0;
e69954b9	267	for (i = 0; i < s->nchannels; i++) {
cdbdb648 PB	268	if (s->chan[i].conf & PL080_CCONF_E)
	269	mask \|= 1 << i;
	270	}
	271	return mask;
	272	case 8: /* SoftBReq */
	273	case 9: /* SoftSReq */
	274	case 10: /* SoftLBReq */
	275	case 11: /* SoftLSReq */
	276	/* ??? Implement these. */
	277	return 0;
	278	case 12: /* Configuration */
	279	return s->conf;
	280	case 13: /* Sync */
	281	return s->sync;
	282	default:
	283	bad_offset:
2ac71179	284	hw_error("pl080_read: Bad offset %x\n", (int)offset);
cdbdb648 PB	285	return 0;
	286	}
	287	}
	288
c227f099	289	static void pl080_write(void *opaque, target_phys_addr_t offset,
63b02e04	290	uint64_t value, unsigned size)
cdbdb648 PB	291	{
	292	pl080_state s = (pl080_state )opaque;
	293	int i;
	294
cdbdb648 PB	295	if (offset >= 0x100 && offset < 0x200) {
cdbdb648 PB	296	i = (offset & 0xe0) >> 5;
e69954b9 PB	297	if (i >= s->nchannels)
e69954b9 PB	298	goto bad_offset;
cdbdb648 PB	299	switch (offset >> 2) {
	300	case 0: /* SrcAddr */
	301	s->chan[i].src = value;
	302	break;
	303	case 1: /* DestAddr */
	304	s->chan[i].dest = value;
	305	break;
	306	case 2: /* LLI */
	307	s->chan[i].lli = value;
	308	break;
	309	case 3: /* Control */
	310	s->chan[i].ctrl = value;
	311	break;
	312	case 4: /* Configuration */
	313	s->chan[i].conf = value;
	314	pl080_run(s);
	315	break;
	316	}
	317	}
	318	switch (offset >> 2) {
	319	case 2: /* IntTCClear */
	320	s->tc_int &= ~value;
	321	break;
	322	case 4: /* IntErrorClear */
	323	s->err_int &= ~value;
	324	break;
	325	case 8: /* SoftBReq */
	326	case 9: /* SoftSReq */
	327	case 10: /* SoftLBReq */
	328	case 11: /* SoftLSReq */
	329	/* ??? Implement these. */
2ac71179	330	hw_error("pl080_write: Soft DMA not implemented\n");
cdbdb648 PB	331	break;
	332	case 12: /* Configuration */
	333	s->conf = value;
	334	if (s->conf & (PL080_CONF_M1 \| PL080_CONF_M1)) {
2ac71179	335	hw_error("pl080_write: Big-endian DMA not implemented\n");
cdbdb648 PB	336	}
	337	pl080_run(s);
	338	break;
	339	case 13: /* Sync */
	340	s->sync = value;
	341	break;
	342	default:
e69954b9	343	bad_offset:
2ac71179	344	hw_error("pl080_write: Bad offset %x\n", (int)offset);
cdbdb648 PB	345	}
	346	pl080_update(s);
	347	}
	348
63b02e04 AK	349	static const MemoryRegionOps pl080_ops = {
	350	.read = pl080_read,
	351	.write = pl080_write,
	352	.endianness = DEVICE_NATIVE_ENDIAN,
cdbdb648 PB	353	};
cdbdb648 PB	354
81a322d4	355	static int pl08x_init(SysBusDevice *dev, int nchannels)
cdbdb648	356	{
b4496b13	357	pl080_state *s = FROM_SYSBUS(pl080_state, dev);
cdbdb648	358
63b02e04	359	memory_region_init_io(&s->iomem, &pl080_ops, s, "pl080", 0x1000);
750ecd44	360	sysbus_init_mmio(dev, &s->iomem);
b4496b13	361	sysbus_init_irq(dev, &s->irq);
e69954b9	362	s->nchannels = nchannels;
81a322d4	363	return 0;
cdbdb648	364	}
b4496b13	365
81a322d4	366	static int pl080_init(SysBusDevice *dev)
b4496b13	367	{
81a322d4	368	return pl08x_init(dev, 8);
b4496b13 PB	369	}
b4496b13 PB	370
81a322d4	371	static int pl081_init(SysBusDevice *dev)
b4496b13	372	{
81a322d4	373	return pl08x_init(dev, 2);
b4496b13 PB	374	}
b4496b13 PB	375
999e12bb AL	376	static void pl080_class_init(ObjectClass klass, void data)
999e12bb AL	377	{
39bffca2	378	DeviceClass *dc = DEVICE_CLASS(klass);
999e12bb AL	379	SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
	380
	381	k->init = pl080_init;
39bffca2 AL	382	dc->no_user = 1;
39bffca2 AL	383	dc->vmsd = &vmstate_pl080;
999e12bb AL	384	}
999e12bb AL	385
39bffca2 AL	386	static TypeInfo pl080_info = {
	387	.name = "pl080",
	388	.parent = TYPE_SYS_BUS_DEVICE,
	389	.instance_size = sizeof(pl080_state),
	390	.class_init = pl080_class_init,
ff175853 PM	391	};
ff175853 PM	392
999e12bb AL	393	static void pl081_class_init(ObjectClass klass, void data)
999e12bb AL	394	{
39bffca2	395	DeviceClass *dc = DEVICE_CLASS(klass);
999e12bb AL	396	SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
	397
	398	k->init = pl081_init;
39bffca2 AL	399	dc->no_user = 1;
39bffca2 AL	400	dc->vmsd = &vmstate_pl080;
999e12bb AL	401	}
999e12bb AL	402
39bffca2 AL	403	static TypeInfo pl081_info = {
	404	.name = "pl081",
	405	.parent = TYPE_SYS_BUS_DEVICE,
	406	.instance_size = sizeof(pl080_state),
	407	.class_init = pl081_class_init,
ff175853 PM	408	};
ff175853 PM	409
b4496b13 PB	410	/* The PL080 and PL081 are the same except for the number of channels
b4496b13 PB	411	they implement (8 and 2 respectively). */
83f7d43a	412	static void pl080_register_types(void)
b4496b13	413	{
39bffca2 AL	414	type_register_static(&pl080_info);
39bffca2 AL	415	type_register_static(&pl081_info);
b4496b13 PB	416	}
b4496b13 PB	417
83f7d43a	418	type_init(pl080_register_types)