[qemu.git] / hw / slavio_misc.c

/*
 * QEMU Sparc SLAVIO aux io port emulation
 * 
 * Copyright (c) 2005 Fabrice Bellard
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
#include "vl.h"
/* debug misc */
//#define DEBUG_MISC

/*
 * This is the auxio port, chip control and system control part of
 * chip STP2001 (Slave I/O), also produced as NCR89C105. See
 * http://www.ibiblio.org/pub/historic-linux/early-ports/Sparc/NCR/NCR89C105.txt
 *
 * This also includes the PMC CPU idle controller.
 */

#ifdef DEBUG_MISC
#define MISC_DPRINTF(fmt, args...) \
do { printf("MISC: " fmt , ##args); } while (0)
#else
#define MISC_DPRINTF(fmt, args...)
#endif

typedef struct MiscState {
    int irq;
    uint8_t config;
    uint8_t aux1, aux2;
    uint8_t diag, mctrl, sysctrl;
} MiscState;

#define MISC_MAXADDR 1

static void slavio_misc_update_irq(void *opaque)
{
    MiscState *s = opaque;

    if ((s->aux2 & 0x4) && (s->config & 0x8)) {
        pic_set_irq(s->irq, 1);
    } else {
        pic_set_irq(s->irq, 0);
    }
}

static void slavio_misc_reset(void *opaque)
{
    MiscState *s = opaque;

    // Diagnostic and system control registers not cleared in reset
    s->config = s->aux1 = s->aux2 = s->mctrl = 0;
}

void slavio_set_power_fail(void *opaque, int power_failing)
{
    MiscState *s = opaque;

    MISC_DPRINTF("Power fail: %d, config: %d\n", power_failing, s->config);
    if (power_failing && (s->config & 0x8)) {
	s->aux2 |= 0x4;
    } else {
	s->aux2 &= ~0x4;
    }
    slavio_misc_update_irq(s);
}

static void slavio_misc_mem_writeb(void *opaque, target_phys_addr_t addr, uint32_t val)
{
    MiscState *s = opaque;

    switch (addr & 0xfff0000) {
    case 0x1800000:
	MISC_DPRINTF("Write config %2.2x\n", val & 0xff);
	s->config = val & 0xff;
	slavio_misc_update_irq(s);
	break;
    case 0x1900000:
	MISC_DPRINTF("Write aux1 %2.2x\n", val & 0xff);
	s->aux1 = val & 0xff;
	break;
    case 0x1910000:
	val &= 0x3;
	MISC_DPRINTF("Write aux2 %2.2x\n", val);
	val |= s->aux2 & 0x4;
	if (val & 0x2) // Clear Power Fail int
	    val &= 0x1;
	s->aux2 = val;
	if (val & 1)
	    qemu_system_shutdown_request();
	slavio_misc_update_irq(s);
	break;
    case 0x1a00000:
	MISC_DPRINTF("Write diag %2.2x\n", val & 0xff);
	s->diag = val & 0xff;
	break;
    case 0x1b00000:
	MISC_DPRINTF("Write modem control %2.2x\n", val & 0xff);
	s->mctrl = val & 0xff;
	break;
    case 0x1f00000:
	MISC_DPRINTF("Write system control %2.2x\n", val & 0xff);
	if (val & 1) {
	    s->sysctrl = 0x2;
	    qemu_system_reset_request();
	}
	break;
    case 0xa000000:
	MISC_DPRINTF("Write power management %2.2x\n", val & 0xff);
#if 0
        // XXX almost works
        cpu_interrupt(cpu_single_env, CPU_INTERRUPT_HALT);
#endif
	break;
    }
}

static uint32_t slavio_misc_mem_readb(void *opaque, target_phys_addr_t addr)
{
    MiscState *s = opaque;
    uint32_t ret = 0;

    switch (addr & 0xfff0000) {
    case 0x1800000:
	ret = s->config;
	MISC_DPRINTF("Read config %2.2x\n", ret);
	break;
    case 0x1900000:
	ret = s->aux1;
	MISC_DPRINTF("Read aux1 %2.2x\n", ret);
	break;
    case 0x1910000:
	ret = s->aux2;
	MISC_DPRINTF("Read aux2 %2.2x\n", ret);
	break;
    case 0x1a00000:
	ret = s->diag;
	MISC_DPRINTF("Read diag %2.2x\n", ret);
	break;
    case 0x1b00000:
	ret = s->mctrl;
	MISC_DPRINTF("Read modem control %2.2x\n", ret);
	break;
    case 0x1f00000:
	MISC_DPRINTF("Read system control %2.2x\n", ret);
	ret = s->sysctrl;
	break;
    case 0xa000000:
	MISC_DPRINTF("Read power management %2.2x\n", ret);
	break;
    }
    return ret;
}

static CPUReadMemoryFunc *slavio_misc_mem_read[3] = {
    slavio_misc_mem_readb,
    slavio_misc_mem_readb,
    slavio_misc_mem_readb,
};

static CPUWriteMemoryFunc *slavio_misc_mem_write[3] = {
    slavio_misc_mem_writeb,
    slavio_misc_mem_writeb,
    slavio_misc_mem_writeb,
};

static void slavio_misc_save(QEMUFile *f, void *opaque)
{
    MiscState *s = opaque;

    qemu_put_be32s(f, &s->irq);
    qemu_put_8s(f, &s->config);
    qemu_put_8s(f, &s->aux1);
    qemu_put_8s(f, &s->aux2);
    qemu_put_8s(f, &s->diag);
    qemu_put_8s(f, &s->mctrl);
    qemu_put_8s(f, &s->sysctrl);
}

static int slavio_misc_load(QEMUFile *f, void *opaque, int version_id)
{
    MiscState *s = opaque;

    if (version_id != 1)
        return -EINVAL;

    qemu_get_be32s(f, &s->irq);
    qemu_get_8s(f, &s->config);
    qemu_get_8s(f, &s->aux1);
    qemu_get_8s(f, &s->aux2);
    qemu_get_8s(f, &s->diag);
    qemu_get_8s(f, &s->mctrl);
    qemu_get_8s(f, &s->sysctrl);
    return 0;
}

void *slavio_misc_init(uint32_t base, int irq)
{
    int slavio_misc_io_memory;
    MiscState *s;

    s = qemu_mallocz(sizeof(MiscState));
    if (!s)
        return NULL;

    slavio_misc_io_memory = cpu_register_io_memory(0, slavio_misc_mem_read, slavio_misc_mem_write, s);
    // Slavio control
    cpu_register_physical_memory(base + 0x1800000, MISC_MAXADDR, slavio_misc_io_memory);
    // AUX 1
    cpu_register_physical_memory(base + 0x1900000, MISC_MAXADDR, slavio_misc_io_memory);
    // AUX 2
    cpu_register_physical_memory(base + 0x1910000, MISC_MAXADDR, slavio_misc_io_memory);
    // Diagnostics
    cpu_register_physical_memory(base + 0x1a00000, MISC_MAXADDR, slavio_misc_io_memory);
    // Modem control
    cpu_register_physical_memory(base + 0x1b00000, MISC_MAXADDR, slavio_misc_io_memory);
    // System control
    cpu_register_physical_memory(base + 0x1f00000, MISC_MAXADDR, slavio_misc_io_memory);
    // Power management
    cpu_register_physical_memory(base + 0xa000000, MISC_MAXADDR, slavio_misc_io_memory);

    s->irq = irq;

    register_savevm("slavio_misc", base, 1, slavio_misc_save, slavio_misc_load, s);
    qemu_register_reset(slavio_misc_reset, s);
    slavio_misc_reset(s);
    return s;
}
Commit	Line	Data
3475187d FB	1	/*
	2	* QEMU Sparc SLAVIO aux io port emulation
	3	*
	4	* Copyright (c) 2005 Fabrice Bellard
	5	*
	6	* Permission is hereby granted, free of charge, to any person obtaining a copy
	7	* of this software and associated documentation files (the "Software"), to deal
	8	* in the Software without restriction, including without limitation the rights
	9	* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	10	* copies of the Software, and to permit persons to whom the Software is
	11	* furnished to do so, subject to the following conditions:
	12	*
	13	* The above copyright notice and this permission notice shall be included in
	14	* all copies or substantial portions of the Software.
	15	*
	16	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	17	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	18	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	19	* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	20	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
	21	* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
	22	* THE SOFTWARE.
	23	*/
	24	#include "vl.h"
	25	/* debug misc */
	26	//#define DEBUG_MISC
	27
	28	/*
	29	* This is the auxio port, chip control and system control part of
	30	* chip STP2001 (Slave I/O), also produced as NCR89C105. See
	31	* http://www.ibiblio.org/pub/historic-linux/early-ports/Sparc/NCR/NCR89C105.txt
	32	*
	33	* This also includes the PMC CPU idle controller.
	34	*/
	35
	36	#ifdef DEBUG_MISC
	37	#define MISC_DPRINTF(fmt, args...) \
	38	do { printf("MISC: " fmt , ##args); } while (0)
	39	#else
	40	#define MISC_DPRINTF(fmt, args...)
	41	#endif
	42
	43	typedef struct MiscState {
	44	int irq;
	45	uint8_t config;
	46	uint8_t aux1, aux2;
4e3b1ea1	47	uint8_t diag, mctrl, sysctrl;
3475187d FB	48	} MiscState;
	49
	50	#define MISC_MAXADDR 1
	51
	52	static void slavio_misc_update_irq(void *opaque)
	53	{
	54	MiscState *s = opaque;
	55
	56	if ((s->aux2 & 0x4) && (s->config & 0x8)) {
	57	pic_set_irq(s->irq, 1);
	58	} else {
	59	pic_set_irq(s->irq, 0);
	60	}
	61	}
	62
	63	static void slavio_misc_reset(void *opaque)
	64	{
	65	MiscState *s = opaque;
	66
4e3b1ea1	67	// Diagnostic and system control registers not cleared in reset
3475187d FB	68	s->config = s->aux1 = s->aux2 = s->mctrl = 0;
	69	}
	70
	71	void slavio_set_power_fail(void *opaque, int power_failing)
	72	{
	73	MiscState *s = opaque;
	74
	75	MISC_DPRINTF("Power fail: %d, config: %d\n", power_failing, s->config);
	76	if (power_failing && (s->config & 0x8)) {
	77	s->aux2 \|= 0x4;
	78	} else {
	79	s->aux2 &= ~0x4;
	80	}
	81	slavio_misc_update_irq(s);
	82	}
	83
	84	static void slavio_misc_mem_writeb(void *opaque, target_phys_addr_t addr, uint32_t val)
	85	{
	86	MiscState *s = opaque;
	87
	88	switch (addr & 0xfff0000) {
	89	case 0x1800000:
	90	MISC_DPRINTF("Write config %2.2x\n", val & 0xff);
	91	s->config = val & 0xff;
	92	slavio_misc_update_irq(s);
	93	break;
	94	case 0x1900000:
	95	MISC_DPRINTF("Write aux1 %2.2x\n", val & 0xff);
	96	s->aux1 = val & 0xff;
	97	break;
	98	case 0x1910000:
	99	val &= 0x3;
	100	MISC_DPRINTF("Write aux2 %2.2x\n", val);
	101	val \|= s->aux2 & 0x4;
	102	if (val & 0x2) // Clear Power Fail int
	103	val &= 0x1;
	104	s->aux2 = val;
	105	if (val & 1)
	106	qemu_system_shutdown_request();
	107	slavio_misc_update_irq(s);
	108	break;
	109	case 0x1a00000:
	110	MISC_DPRINTF("Write diag %2.2x\n", val & 0xff);
	111	s->diag = val & 0xff;
	112	break;
	113	case 0x1b00000:
	114	MISC_DPRINTF("Write modem control %2.2x\n", val & 0xff);
	115	s->mctrl = val & 0xff;
	116	break;
	117	case 0x1f00000:
	118	MISC_DPRINTF("Write system control %2.2x\n", val & 0xff);
4e3b1ea1 FB	119	if (val & 1) {
4e3b1ea1 FB	120	s->sysctrl = 0x2;
3475187d	121	qemu_system_reset_request();
4e3b1ea1	122	}
3475187d FB	123	break;
	124	case 0xa000000:
	125	MISC_DPRINTF("Write power management %2.2x\n", val & 0xff);
	126	#if 0
ba3c64fb FB	127	// XXX almost works
ba3c64fb FB	128	cpu_interrupt(cpu_single_env, CPU_INTERRUPT_HALT);
3475187d FB	129	#endif
	130	break;
	131	}
	132	}
	133
	134	static uint32_t slavio_misc_mem_readb(void *opaque, target_phys_addr_t addr)
	135	{
	136	MiscState *s = opaque;
	137	uint32_t ret = 0;
	138
	139	switch (addr & 0xfff0000) {
	140	case 0x1800000:
	141	ret = s->config;
	142	MISC_DPRINTF("Read config %2.2x\n", ret);
	143	break;
	144	case 0x1900000:
	145	ret = s->aux1;
	146	MISC_DPRINTF("Read aux1 %2.2x\n", ret);
	147	break;
	148	case 0x1910000:
	149	ret = s->aux2;
	150	MISC_DPRINTF("Read aux2 %2.2x\n", ret);
	151	break;
	152	case 0x1a00000:
	153	ret = s->diag;
	154	MISC_DPRINTF("Read diag %2.2x\n", ret);
	155	break;
	156	case 0x1b00000:
	157	ret = s->mctrl;
	158	MISC_DPRINTF("Read modem control %2.2x\n", ret);
	159	break;
	160	case 0x1f00000:
	161	MISC_DPRINTF("Read system control %2.2x\n", ret);
4e3b1ea1	162	ret = s->sysctrl;
3475187d FB	163	break;
	164	case 0xa000000:
	165	MISC_DPRINTF("Read power management %2.2x\n", ret);
	166	break;
	167	}
	168	return ret;
	169	}
	170
	171	static CPUReadMemoryFunc *slavio_misc_mem_read[3] = {
	172	slavio_misc_mem_readb,
	173	slavio_misc_mem_readb,
	174	slavio_misc_mem_readb,
	175	};
	176
	177	static CPUWriteMemoryFunc *slavio_misc_mem_write[3] = {
	178	slavio_misc_mem_writeb,
	179	slavio_misc_mem_writeb,
	180	slavio_misc_mem_writeb,
	181	};
	182
	183	static void slavio_misc_save(QEMUFile f, void opaque)
	184	{
	185	MiscState *s = opaque;
	186
	187	qemu_put_be32s(f, &s->irq);
	188	qemu_put_8s(f, &s->config);
	189	qemu_put_8s(f, &s->aux1);
	190	qemu_put_8s(f, &s->aux2);
	191	qemu_put_8s(f, &s->diag);
	192	qemu_put_8s(f, &s->mctrl);
4e3b1ea1	193	qemu_put_8s(f, &s->sysctrl);
3475187d FB	194	}
	195
	196	static int slavio_misc_load(QEMUFile f, void opaque, int version_id)
	197	{
	198	MiscState *s = opaque;
	199
	200	if (version_id != 1)
	201	return -EINVAL;
	202
	203	qemu_get_be32s(f, &s->irq);
	204	qemu_get_8s(f, &s->config);
	205	qemu_get_8s(f, &s->aux1);
	206	qemu_get_8s(f, &s->aux2);
	207	qemu_get_8s(f, &s->diag);
	208	qemu_get_8s(f, &s->mctrl);
4e3b1ea1	209	qemu_get_8s(f, &s->sysctrl);
3475187d FB	210	return 0;
	211	}
	212
	213	void *slavio_misc_init(uint32_t base, int irq)
	214	{
	215	int slavio_misc_io_memory;
	216	MiscState *s;
	217
	218	s = qemu_mallocz(sizeof(MiscState));
	219	if (!s)
	220	return NULL;
	221
	222	slavio_misc_io_memory = cpu_register_io_memory(0, slavio_misc_mem_read, slavio_misc_mem_write, s);
	223	// Slavio control
	224	cpu_register_physical_memory(base + 0x1800000, MISC_MAXADDR, slavio_misc_io_memory);
	225	// AUX 1
	226	cpu_register_physical_memory(base + 0x1900000, MISC_MAXADDR, slavio_misc_io_memory);
	227	// AUX 2
	228	cpu_register_physical_memory(base + 0x1910000, MISC_MAXADDR, slavio_misc_io_memory);
	229	// Diagnostics
	230	cpu_register_physical_memory(base + 0x1a00000, MISC_MAXADDR, slavio_misc_io_memory);
	231	// Modem control
	232	cpu_register_physical_memory(base + 0x1b00000, MISC_MAXADDR, slavio_misc_io_memory);
	233	// System control
	234	cpu_register_physical_memory(base + 0x1f00000, MISC_MAXADDR, slavio_misc_io_memory);
	235	// Power management
	236	cpu_register_physical_memory(base + 0xa000000, MISC_MAXADDR, slavio_misc_io_memory);
	237
	238	s->irq = irq;
	239
	240	register_savevm("slavio_misc", base, 1, slavio_misc_save, slavio_misc_load, s);
	241	qemu_register_reset(slavio_misc_reset, s);
	242	slavio_misc_reset(s);
	243	return s;
	244	}