[qemu.git] / hw / omap_l4.c

/*
 * TI OMAP L4 interconnect emulation.
 *
 * Copyright (C) 2007-2009 Nokia Corporation
 * Written by Andrzej Zaborowski <[email protected]>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 or
 * (at your option) any later version of the License.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, see <http://www.gnu.org/licenses/>.
 */
#include "hw.h"
#include "omap.h"

#ifdef L4_MUX_HACK
static int omap_l4_io_entries;
static int omap_cpu_io_entry;
static struct omap_l4_entry {
        CPUReadMemoryFunc * const *mem_read;
        CPUWriteMemoryFunc * const *mem_write;
        void *opaque;
} *omap_l4_io_entry;
static CPUReadMemoryFunc * const *omap_l4_io_readb_fn;
static CPUReadMemoryFunc * const *omap_l4_io_readh_fn;
static CPUReadMemoryFunc * const *omap_l4_io_readw_fn;
static CPUWriteMemoryFunc * const *omap_l4_io_writeb_fn;
static CPUWriteMemoryFunc * const *omap_l4_io_writeh_fn;
static CPUWriteMemoryFunc * const *omap_l4_io_writew_fn;
static void **omap_l4_io_opaque;

int l4_register_io_memory(CPUReadMemoryFunc * const *mem_read,
                CPUWriteMemoryFunc * const *mem_write, void *opaque)
{
    omap_l4_io_entry[omap_l4_io_entries].mem_read = mem_read;
    omap_l4_io_entry[omap_l4_io_entries].mem_write = mem_write;
    omap_l4_io_entry[omap_l4_io_entries].opaque = opaque;

    return omap_l4_io_entries ++;
}

static uint32_t omap_l4_io_readb(void *opaque, target_phys_addr_t addr)
{
    unsigned int i = (addr - OMAP2_L4_BASE) >> TARGET_PAGE_BITS;

    return omap_l4_io_readb_fn[i](omap_l4_io_opaque[i], addr);
}

static uint32_t omap_l4_io_readh(void *opaque, target_phys_addr_t addr)
{
    unsigned int i = (addr - OMAP2_L4_BASE) >> TARGET_PAGE_BITS;

    return omap_l4_io_readh_fn[i](omap_l4_io_opaque[i], addr);
}

static uint32_t omap_l4_io_readw(void *opaque, target_phys_addr_t addr)
{
    unsigned int i = (addr - OMAP2_L4_BASE) >> TARGET_PAGE_BITS;

    return omap_l4_io_readw_fn[i](omap_l4_io_opaque[i], addr);
}

static void omap_l4_io_writeb(void *opaque, target_phys_addr_t addr,
                uint32_t value)
{
    unsigned int i = (addr - OMAP2_L4_BASE) >> TARGET_PAGE_BITS;

    return omap_l4_io_writeb_fn[i](omap_l4_io_opaque[i], addr, value);
}

static void omap_l4_io_writeh(void *opaque, target_phys_addr_t addr,
                uint32_t value)
{
    unsigned int i = (addr - OMAP2_L4_BASE) >> TARGET_PAGE_BITS;

    return omap_l4_io_writeh_fn[i](omap_l4_io_opaque[i], addr, value);
}

static void omap_l4_io_writew(void *opaque, target_phys_addr_t addr,
                uint32_t value)
{
    unsigned int i = (addr - OMAP2_L4_BASE) >> TARGET_PAGE_BITS;

    return omap_l4_io_writew_fn[i](omap_l4_io_opaque[i], addr, value);
}

static CPUReadMemoryFunc * const omap_l4_io_readfn[] = {
    omap_l4_io_readb,
    omap_l4_io_readh,
    omap_l4_io_readw,
};

static CPUWriteMemoryFunc * const omap_l4_io_writefn[] = {
    omap_l4_io_writeb,
    omap_l4_io_writeh,
    omap_l4_io_writew,
};
#else
int l4_register_io_memory(CPUReadMemoryFunc * const *mem_read,
                          CPUWriteMemoryFunc * const *mem_write,
                          void *opaque)
{
    return cpu_register_io_memory(mem_read, mem_write, opaque,
                                  DEVICE_NATIVE_ENDIAN);
}
#endif

struct omap_l4_s {
    target_phys_addr_t base;
    int ta_num;
    struct omap_target_agent_s ta[0];
};

struct omap_l4_s *omap_l4_init(target_phys_addr_t base, int ta_num)
{
    struct omap_l4_s *bus = g_malloc0(
                    sizeof(*bus) + ta_num * sizeof(*bus->ta));

    bus->ta_num = ta_num;
    bus->base = base;

#ifdef L4_MUX_HACK
    omap_l4_io_entries = 1;
    omap_l4_io_entry = g_malloc0(125 * sizeof(*omap_l4_io_entry));

    omap_cpu_io_entry =
            cpu_register_io_memory(omap_l4_io_readfn,
                            omap_l4_io_writefn, bus, DEVICE_NATIVE_ENDIAN);
# define L4_PAGES	(0xb4000 / TARGET_PAGE_SIZE)
    omap_l4_io_readb_fn = g_malloc0(sizeof(void *) * L4_PAGES);
    omap_l4_io_readh_fn = g_malloc0(sizeof(void *) * L4_PAGES);
    omap_l4_io_readw_fn = g_malloc0(sizeof(void *) * L4_PAGES);
    omap_l4_io_writeb_fn = g_malloc0(sizeof(void *) * L4_PAGES);
    omap_l4_io_writeh_fn = g_malloc0(sizeof(void *) * L4_PAGES);
    omap_l4_io_writew_fn = g_malloc0(sizeof(void *) * L4_PAGES);
    omap_l4_io_opaque = g_malloc0(sizeof(void *) * L4_PAGES);
#endif

    return bus;
}

target_phys_addr_t omap_l4_region_base(struct omap_target_agent_s *ta,
                                       int region)
{
    return ta->bus->base + ta->start[region].offset;
}

static uint32_t omap_l4ta_read(void *opaque, target_phys_addr_t addr)
{
    struct omap_target_agent_s *s = (struct omap_target_agent_s *) opaque;

    switch (addr) {
    case 0x00:	/* COMPONENT */
        return s->component;

    case 0x20:	/* AGENT_CONTROL */
        return s->control;

    case 0x28:	/* AGENT_STATUS */
        return s->status;
    }

    OMAP_BAD_REG(addr);
    return 0;
}

static void omap_l4ta_write(void *opaque, target_phys_addr_t addr,
                uint32_t value)
{
    struct omap_target_agent_s *s = (struct omap_target_agent_s *) opaque;

    switch (addr) {
    case 0x00:	/* COMPONENT */
    case 0x28:	/* AGENT_STATUS */
        OMAP_RO_REG(addr);
        break;

    case 0x20:	/* AGENT_CONTROL */
        s->control = value & 0x01000700;
        if (value & 1)					/* OCP_RESET */
            s->status &= ~1;				/* REQ_TIMEOUT */
        break;

    default:
        OMAP_BAD_REG(addr);
    }
}

static CPUReadMemoryFunc * const omap_l4ta_readfn[] = {
    omap_badwidth_read16,
    omap_l4ta_read,
    omap_badwidth_read16,
};

static CPUWriteMemoryFunc * const omap_l4ta_writefn[] = {
    omap_badwidth_write32,
    omap_badwidth_write32,
    omap_l4ta_write,
};

struct omap_target_agent_s *omap_l4ta_get(struct omap_l4_s *bus,
        const struct omap_l4_region_s *regions,
	const struct omap_l4_agent_info_s *agents,
	int cs)
{
    int i, iomemtype;
    struct omap_target_agent_s *ta = NULL;
    const struct omap_l4_agent_info_s *info = NULL;

    for (i = 0; i < bus->ta_num; i ++)
        if (agents[i].ta == cs) {
            ta = &bus->ta[i];
            info = &agents[i];
            break;
        }
    if (!ta) {
        fprintf(stderr, "%s: bad target agent (%i)\n", __FUNCTION__, cs);
        exit(-1);
    }

    ta->bus = bus;
    ta->start = &regions[info->region];
    ta->regions = info->regions;

    ta->component = ('Q' << 24) | ('E' << 16) | ('M' << 8) | ('U' << 0);
    ta->status = 0x00000000;
    ta->control = 0x00000200;	/* XXX 01000200 for L4TAO */

    iomemtype = l4_register_io_memory(omap_l4ta_readfn,
                    omap_l4ta_writefn, ta);
    ta->base = omap_l4_attach(ta, info->ta_region, iomemtype);

    return ta;
}

target_phys_addr_t omap_l4_attach(struct omap_target_agent_s *ta, int region,
                int iotype)
{
    target_phys_addr_t base;
    ssize_t size;
#ifdef L4_MUX_HACK
    int i;
#endif

    if (region < 0 || region >= ta->regions) {
        fprintf(stderr, "%s: bad io region (%i)\n", __FUNCTION__, region);
        exit(-1);
    }

    base = ta->bus->base + ta->start[region].offset;
    size = ta->start[region].size;
    if (iotype) {
#ifndef L4_MUX_HACK
        cpu_register_physical_memory(base, size, iotype);
#else
        cpu_register_physical_memory(base, size, omap_cpu_io_entry);
        i = (base - ta->bus->base) / TARGET_PAGE_SIZE;
        for (; size > 0; size -= TARGET_PAGE_SIZE, i ++) {
            omap_l4_io_readb_fn[i] = omap_l4_io_entry[iotype].mem_read[0];
            omap_l4_io_readh_fn[i] = omap_l4_io_entry[iotype].mem_read[1];
            omap_l4_io_readw_fn[i] = omap_l4_io_entry[iotype].mem_read[2];
            omap_l4_io_writeb_fn[i] = omap_l4_io_entry[iotype].mem_write[0];
            omap_l4_io_writeh_fn[i] = omap_l4_io_entry[iotype].mem_write[1];
            omap_l4_io_writew_fn[i] = omap_l4_io_entry[iotype].mem_write[2];
            omap_l4_io_opaque[i] = omap_l4_io_entry[iotype].opaque;
        }
#endif
    }

    return base;
}
Commit	Line	Data
2c1d9ecb	1	/*
	2	* TI OMAP L4 interconnect emulation.
	3	*
	4	* Copyright (C) 2007-2009 Nokia Corporation
	5	* Written by Andrzej Zaborowski <[email protected]>
	6	*
	7	* This program is free software; you can redistribute it and/or
	8	* modify it under the terms of the GNU General Public License as
	9	* published by the Free Software Foundation; either version 2 or
	10	* (at your option) any later version of the License.
	11	*
	12	* This program is distributed in the hope that it will be useful,
	13	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	* GNU General Public License for more details.
	16	*
	17	* You should have received a copy of the GNU General Public License along
	18	* with this program; if not, see <http://www.gnu.org/licenses/>.
	19	*/
	20	#include "hw.h"
	21	#include "omap.h"
	22
	23	#ifdef L4_MUX_HACK
	24	static int omap_l4_io_entries;
	25	static int omap_cpu_io_entry;
	26	static struct omap_l4_entry {
	27	CPUReadMemoryFunc * const *mem_read;
	28	CPUWriteMemoryFunc * const *mem_write;
	29	void *opaque;
	30	} *omap_l4_io_entry;
	31	static CPUReadMemoryFunc * const *omap_l4_io_readb_fn;
	32	static CPUReadMemoryFunc * const *omap_l4_io_readh_fn;
	33	static CPUReadMemoryFunc * const *omap_l4_io_readw_fn;
	34	static CPUWriteMemoryFunc * const *omap_l4_io_writeb_fn;
	35	static CPUWriteMemoryFunc * const *omap_l4_io_writeh_fn;
	36	static CPUWriteMemoryFunc * const *omap_l4_io_writew_fn;
	37	static void **omap_l4_io_opaque;
	38
	39	int l4_register_io_memory(CPUReadMemoryFunc * const *mem_read,
	40	CPUWriteMemoryFunc * const mem_write, void opaque)
	41	{
	42	omap_l4_io_entry[omap_l4_io_entries].mem_read = mem_read;
	43	omap_l4_io_entry[omap_l4_io_entries].mem_write = mem_write;
	44	omap_l4_io_entry[omap_l4_io_entries].opaque = opaque;
	45
	46	return omap_l4_io_entries ++;
	47	}
	48
	49	static uint32_t omap_l4_io_readb(void *opaque, target_phys_addr_t addr)
	50	{
	51	unsigned int i = (addr - OMAP2_L4_BASE) >> TARGET_PAGE_BITS;
	52
	53	return omap_l4_io_readb_fn[i](omap_l4_io_opaque[i], addr);
	54	}
	55
	56	static uint32_t omap_l4_io_readh(void *opaque, target_phys_addr_t addr)
	57	{
	58	unsigned int i = (addr - OMAP2_L4_BASE) >> TARGET_PAGE_BITS;
	59
	60	return omap_l4_io_readh_fn[i](omap_l4_io_opaque[i], addr);
	61	}
	62
	63	static uint32_t omap_l4_io_readw(void *opaque, target_phys_addr_t addr)
	64	{
65	unsigned int i = (addr - OMAP2_L4_BASE) >> TARGET_PAGE_BITS;
66
67	return omap_l4_io_readw_fn[i](omap_l4_io_opaque[i], addr);
68	}
69
70	static void omap_l4_io_writeb(void *opaque, target_phys_addr_t addr,
71	uint32_t value)
72	{
73	unsigned int i = (addr - OMAP2_L4_BASE) >> TARGET_PAGE_BITS;
74
75	return omap_l4_io_writeb_fn[i](omap_l4_io_opaque[i], addr, value);
76	}
77
78	static void omap_l4_io_writeh(void *opaque, target_phys_addr_t addr,
79	uint32_t value)
80	{
81	unsigned int i = (addr - OMAP2_L4_BASE) >> TARGET_PAGE_BITS;
82
83	return omap_l4_io_writeh_fn[i](omap_l4_io_opaque[i], addr, value);
84	}
85
86	static void omap_l4_io_writew(void *opaque, target_phys_addr_t addr,
87	uint32_t value)
88	{
89	unsigned int i = (addr - OMAP2_L4_BASE) >> TARGET_PAGE_BITS;
90
91	return omap_l4_io_writew_fn[i](omap_l4_io_opaque[i], addr, value);
92	}
93
94	static CPUReadMemoryFunc * const omap_l4_io_readfn[] = {
95	omap_l4_io_readb,
96	omap_l4_io_readh,
97	omap_l4_io_readw,
98	};
99
100	static CPUWriteMemoryFunc * const omap_l4_io_writefn[] = {
101	omap_l4_io_writeb,
102	omap_l4_io_writeh,
103	omap_l4_io_writew,
104	};
105	#else
106	int l4_register_io_memory(CPUReadMemoryFunc * const *mem_read,
107	CPUWriteMemoryFunc * const *mem_write,
108	void *opaque)
109	{
2507c12a AG	110	return cpu_register_io_memory(mem_read, mem_write, opaque,
2507c12a AG	111	DEVICE_NATIVE_ENDIAN);
2c1d9ecb	112	}
	113	#endif
	114
	115	struct omap_l4_s {
	116	target_phys_addr_t base;
	117	int ta_num;
	118	struct omap_target_agent_s ta[0];
	119	};
	120
	121	struct omap_l4_s *omap_l4_init(target_phys_addr_t base, int ta_num)
	122	{
7267c094	123	struct omap_l4_s *bus = g_malloc0(
2c1d9ecb	124	sizeof(bus) + ta_num sizeof(*bus->ta));
	125
	126	bus->ta_num = ta_num;
	127	bus->base = base;
	128
	129	#ifdef L4_MUX_HACK
	130	omap_l4_io_entries = 1;
7267c094	131	omap_l4_io_entry = g_malloc0(125 * sizeof(*omap_l4_io_entry));
2c1d9ecb	132
	133	omap_cpu_io_entry =
	134	cpu_register_io_memory(omap_l4_io_readfn,
2507c12a	135	omap_l4_io_writefn, bus, DEVICE_NATIVE_ENDIAN);
2c1d9ecb	136	# define L4_PAGES (0xb4000 / TARGET_PAGE_SIZE)
7267c094 AL	137	omap_l4_io_readb_fn = g_malloc0(sizeof(void ) L4_PAGES);
	138	omap_l4_io_readh_fn = g_malloc0(sizeof(void ) L4_PAGES);
	139	omap_l4_io_readw_fn = g_malloc0(sizeof(void ) L4_PAGES);
	140	omap_l4_io_writeb_fn = g_malloc0(sizeof(void ) L4_PAGES);
	141	omap_l4_io_writeh_fn = g_malloc0(sizeof(void ) L4_PAGES);
	142	omap_l4_io_writew_fn = g_malloc0(sizeof(void ) L4_PAGES);
	143	omap_l4_io_opaque = g_malloc0(sizeof(void ) L4_PAGES);
2c1d9ecb	144	#endif
	145
	146	return bus;
	147	}
	148
f9049203 JR	149	target_phys_addr_t omap_l4_region_base(struct omap_target_agent_s *ta,
	150	int region)
	151	{
	152	return ta->bus->base + ta->start[region].offset;
	153	}
	154
2c1d9ecb	155	static uint32_t omap_l4ta_read(void *opaque, target_phys_addr_t addr)
	156	{
	157	struct omap_target_agent_s s = (struct omap_target_agent_s ) opaque;
	158
	159	switch (addr) {
	160	case 0x00: /* COMPONENT */
	161	return s->component;
	162
	163	case 0x20: /* AGENT_CONTROL */
	164	return s->control;
	165
	166	case 0x28: /* AGENT_STATUS */
	167	return s->status;
	168	}
	169
	170	OMAP_BAD_REG(addr);
	171	return 0;
	172	}
	173
	174	static void omap_l4ta_write(void *opaque, target_phys_addr_t addr,
	175	uint32_t value)
	176	{
	177	struct omap_target_agent_s s = (struct omap_target_agent_s ) opaque;
	178
	179	switch (addr) {
	180	case 0x00: /* COMPONENT */
	181	case 0x28: /* AGENT_STATUS */
	182	OMAP_RO_REG(addr);
	183	break;
	184
	185	case 0x20: /* AGENT_CONTROL */
	186	s->control = value & 0x01000700;
	187	if (value & 1) /* OCP_RESET */
	188	s->status &= ~1; /* REQ_TIMEOUT */
	189	break;
	190
	191	default:
	192	OMAP_BAD_REG(addr);
	193	}
	194	}
	195
	196	static CPUReadMemoryFunc * const omap_l4ta_readfn[] = {
	197	omap_badwidth_read16,
	198	omap_l4ta_read,
	199	omap_badwidth_read16,
	200	};
	201
	202	static CPUWriteMemoryFunc * const omap_l4ta_writefn[] = {
	203	omap_badwidth_write32,
	204	omap_badwidth_write32,
	205	omap_l4ta_write,
	206	};
	207
	208	struct omap_target_agent_s omap_l4ta_get(struct omap_l4_s bus,
	209	const struct omap_l4_region_s *regions,
	210	const struct omap_l4_agent_info_s *agents,
	211	int cs)
	212	{
	213	int i, iomemtype;
	214	struct omap_target_agent_s *ta = NULL;
	215	const struct omap_l4_agent_info_s *info = NULL;
	216
	217	for (i = 0; i < bus->ta_num; i ++)
	218	if (agents[i].ta == cs) {
219	ta = &bus->ta[i];
220	info = &agents[i];
221	break;
222	}
223	if (!ta) {
224	fprintf(stderr, "%s: bad target agent (%i)\n", __FUNCTION__, cs);
225	exit(-1);
226	}
227
228	ta->bus = bus;
229	ta->start = &regions[info->region];
230	ta->regions = info->regions;
231
232	ta->component = ('Q' << 24) \| ('E' << 16) \| ('M' << 8) \| ('U' << 0);
233	ta->status = 0x00000000;
234	ta->control = 0x00000200; /* XXX 01000200 for L4TAO */
235
236	iomemtype = l4_register_io_memory(omap_l4ta_readfn,
237	omap_l4ta_writefn, ta);
238	ta->base = omap_l4_attach(ta, info->ta_region, iomemtype);
239
240	return ta;
241	}
242
243	target_phys_addr_t omap_l4_attach(struct omap_target_agent_s *ta, int region,
244	int iotype)
245	{
246	target_phys_addr_t base;
247	ssize_t size;
248	#ifdef L4_MUX_HACK
249	int i;
250	#endif
251
252	if (region < 0 \|\| region >= ta->regions) {
253	fprintf(stderr, "%s: bad io region (%i)\n", __FUNCTION__, region);
254	exit(-1);
255	}
256
257	base = ta->bus->base + ta->start[region].offset;
258	size = ta->start[region].size;
259	if (iotype) {
260	#ifndef L4_MUX_HACK
261	cpu_register_physical_memory(base, size, iotype);
262	#else
263	cpu_register_physical_memory(base, size, omap_cpu_io_entry);
264	i = (base - ta->bus->base) / TARGET_PAGE_SIZE;
265	for (; size > 0; size -= TARGET_PAGE_SIZE, i ++) {
266	omap_l4_io_readb_fn[i] = omap_l4_io_entry[iotype].mem_read[0];
267	omap_l4_io_readh_fn[i] = omap_l4_io_entry[iotype].mem_read[1];
268	omap_l4_io_readw_fn[i] = omap_l4_io_entry[iotype].mem_read[2];
269	omap_l4_io_writeb_fn[i] = omap_l4_io_entry[iotype].mem_write[0];
270	omap_l4_io_writeh_fn[i] = omap_l4_io_entry[iotype].mem_write[1];
271	omap_l4_io_writew_fn[i] = omap_l4_io_entry[iotype].mem_write[2];
272	omap_l4_io_opaque[i] = omap_l4_io_entry[iotype].opaque;
273	}
274	#endif
275	}
276
277	return base;
278	}