[qemu.git] / hw / misc / imx7_ccm.c

/*
 * Copyright (c) 2018, Impinj, Inc.
 *
 * i.MX7 CCM, PMU and ANALOG IP blocks emulation code
 *
 * Author: Andrey Smirnov <[email protected]>
 *
 * This work is licensed under the terms of the GNU GPL, version 2 or later.
 * See the COPYING file in the top-level directory.
 */

#include "qemu/osdep.h"
#include "qemu/log.h"
#include "qemu/module.h"

#include "hw/misc/imx7_ccm.h"
#include "migration/vmstate.h"

static void imx7_analog_reset(DeviceState *dev)
{
    IMX7AnalogState *s = IMX7_ANALOG(dev);

    memset(s->pmu, 0, sizeof(s->pmu));
    memset(s->analog, 0, sizeof(s->analog));

    s->analog[ANALOG_PLL_ARM]         = 0x00002042;
    s->analog[ANALOG_PLL_DDR]         = 0x0060302c;
    s->analog[ANALOG_PLL_DDR_SS]      = 0x00000000;
    s->analog[ANALOG_PLL_DDR_NUM]     = 0x06aaac4d;
    s->analog[ANALOG_PLL_DDR_DENOM]   = 0x100003ec;
    s->analog[ANALOG_PLL_480]         = 0x00002000;
    s->analog[ANALOG_PLL_480A]        = 0x52605a56;
    s->analog[ANALOG_PLL_480B]        = 0x52525216;
    s->analog[ANALOG_PLL_ENET]        = 0x00001fc0;
    s->analog[ANALOG_PLL_AUDIO]       = 0x0001301b;
    s->analog[ANALOG_PLL_AUDIO_SS]    = 0x00000000;
    s->analog[ANALOG_PLL_AUDIO_NUM]   = 0x05f5e100;
    s->analog[ANALOG_PLL_AUDIO_DENOM] = 0x2964619c;
    s->analog[ANALOG_PLL_VIDEO]       = 0x0008201b;
    s->analog[ANALOG_PLL_VIDEO_SS]    = 0x00000000;
    s->analog[ANALOG_PLL_VIDEO_NUM]   = 0x0000f699;
    s->analog[ANALOG_PLL_VIDEO_DENOM] = 0x000f4240;
    s->analog[ANALOG_PLL_MISC0]       = 0x00000000;

    /* all PLLs need to be locked */
    s->analog[ANALOG_PLL_ARM]   |= ANALOG_PLL_LOCK;
    s->analog[ANALOG_PLL_DDR]   |= ANALOG_PLL_LOCK;
    s->analog[ANALOG_PLL_480]   |= ANALOG_PLL_LOCK;
    s->analog[ANALOG_PLL_480A]  |= ANALOG_PLL_LOCK;
    s->analog[ANALOG_PLL_480B]  |= ANALOG_PLL_LOCK;
    s->analog[ANALOG_PLL_ENET]  |= ANALOG_PLL_LOCK;
    s->analog[ANALOG_PLL_AUDIO] |= ANALOG_PLL_LOCK;
    s->analog[ANALOG_PLL_VIDEO] |= ANALOG_PLL_LOCK;
    s->analog[ANALOG_PLL_MISC0] |= ANALOG_PLL_LOCK;

    /*
     * Since I couldn't find any info about this in the reference
     * manual the value of this register is based strictly on matching
     * what Linux kernel expects it to be.
     */
    s->analog[ANALOG_DIGPROG]  = 0x720000;
    /*
     * Set revision to be 1.0 (Arbitrary choice, no particular
     * reason).
     */
    s->analog[ANALOG_DIGPROG] |= 0x000010;
}

static void imx7_ccm_reset(DeviceState *dev)
{
    IMX7CCMState *s = IMX7_CCM(dev);

    memset(s->ccm, 0, sizeof(s->ccm));
}

#define CCM_INDEX(offset)   (((offset) & ~(hwaddr)0xF) / sizeof(uint32_t))
#define CCM_BITOP(offset)   ((offset) & (hwaddr)0xF)

enum {
    CCM_BITOP_NONE = 0x00,
    CCM_BITOP_SET  = 0x04,
    CCM_BITOP_CLR  = 0x08,
    CCM_BITOP_TOG  = 0x0C,
};

static uint64_t imx7_set_clr_tog_read(void *opaque, hwaddr offset,
                                      unsigned size)
{
    const uint32_t *mmio = opaque;

    return mmio[CCM_INDEX(offset)];
}

static void imx7_set_clr_tog_write(void *opaque, hwaddr offset,
                                   uint64_t value, unsigned size)
{
    const uint8_t  bitop = CCM_BITOP(offset);
    const uint32_t index = CCM_INDEX(offset);
    uint32_t *mmio = opaque;

    switch (bitop) {
    case CCM_BITOP_NONE:
        mmio[index]  = value;
        break;
    case CCM_BITOP_SET:
        mmio[index] |= value;
        break;
    case CCM_BITOP_CLR:
        mmio[index] &= ~value;
        break;
    case CCM_BITOP_TOG:
        mmio[index] ^= value;
        break;
    };
}

static const struct MemoryRegionOps imx7_set_clr_tog_ops = {
    .read = imx7_set_clr_tog_read,
    .write = imx7_set_clr_tog_write,
    .endianness = DEVICE_NATIVE_ENDIAN,
    .impl = {
        /*
         * Our device would not work correctly if the guest was doing
         * unaligned access. This might not be a limitation on the real
         * device but in practice there is no reason for a guest to access
         * this device unaligned.
         */
        .min_access_size = 4,
        .max_access_size = 4,
        .unaligned = false,
    },
};

static const struct MemoryRegionOps imx7_digprog_ops = {
    .read = imx7_set_clr_tog_read,
    .endianness = DEVICE_NATIVE_ENDIAN,
    .impl = {
        .min_access_size = 4,
        .max_access_size = 4,
        .unaligned = false,
    },
};

static void imx7_ccm_init(Object *obj)
{
    SysBusDevice *sd = SYS_BUS_DEVICE(obj);
    IMX7CCMState *s = IMX7_CCM(obj);

    memory_region_init_io(&s->iomem,
                          obj,
                          &imx7_set_clr_tog_ops,
                          s->ccm,
                          TYPE_IMX7_CCM ".ccm",
                          sizeof(s->ccm));

    sysbus_init_mmio(sd, &s->iomem);
}

static void imx7_analog_init(Object *obj)
{
    SysBusDevice *sd = SYS_BUS_DEVICE(obj);
    IMX7AnalogState *s = IMX7_ANALOG(obj);

    memory_region_init(&s->mmio.container, obj, TYPE_IMX7_ANALOG,
                       0x10000);

    memory_region_init_io(&s->mmio.analog,
                          obj,
                          &imx7_set_clr_tog_ops,
                          s->analog,
                          TYPE_IMX7_ANALOG,
                          sizeof(s->analog));

    memory_region_add_subregion(&s->mmio.container,
                                0x60, &s->mmio.analog);

    memory_region_init_io(&s->mmio.pmu,
                          obj,
                          &imx7_set_clr_tog_ops,
                          s->pmu,
                          TYPE_IMX7_ANALOG ".pmu",
                          sizeof(s->pmu));

    memory_region_add_subregion(&s->mmio.container,
                                0x200, &s->mmio.pmu);

    memory_region_init_io(&s->mmio.digprog,
                          obj,
                          &imx7_digprog_ops,
                          &s->analog[ANALOG_DIGPROG],
                          TYPE_IMX7_ANALOG ".digprog",
                          sizeof(uint32_t));

    memory_region_add_subregion_overlap(&s->mmio.container,
                                        0x800, &s->mmio.digprog, 10);


    sysbus_init_mmio(sd, &s->mmio.container);
}

static const VMStateDescription vmstate_imx7_ccm = {
    .name = TYPE_IMX7_CCM,
    .version_id = 1,
    .minimum_version_id = 1,
    .fields = (VMStateField[]) {
        VMSTATE_UINT32_ARRAY(ccm, IMX7CCMState, CCM_MAX),
        VMSTATE_END_OF_LIST()
    },
};

static uint32_t imx7_ccm_get_clock_frequency(IMXCCMState *dev, IMXClk clock)
{
    /*
     * This function is "consumed" by GPT emulation code, however on
     * i.MX7 each GPT block can have their own clock root. This means
     * that this functions needs somehow to know requester's identity
     * and the way to pass it: be it via additional IMXClk constants
     * or by adding another argument to this method needs to be
     * figured out
     */
    qemu_log_mask(LOG_GUEST_ERROR, "[%s]%s: Not implemented\n",
                  TYPE_IMX7_CCM, __func__);
    return 0;
}

static void imx7_ccm_class_init(ObjectClass *klass, void *data)
{
    DeviceClass *dc = DEVICE_CLASS(klass);
    IMXCCMClass *ccm = IMX_CCM_CLASS(klass);

    dc->reset = imx7_ccm_reset;
    dc->vmsd  = &vmstate_imx7_ccm;
    dc->desc  = "i.MX7 Clock Control Module";

    ccm->get_clock_frequency = imx7_ccm_get_clock_frequency;
}

static const TypeInfo imx7_ccm_info = {
    .name          = TYPE_IMX7_CCM,
    .parent        = TYPE_IMX_CCM,
    .instance_size = sizeof(IMX7CCMState),
    .instance_init = imx7_ccm_init,
    .class_init    = imx7_ccm_class_init,
};

static const VMStateDescription vmstate_imx7_analog = {
    .name = TYPE_IMX7_ANALOG,
    .version_id = 1,
    .minimum_version_id = 1,
    .fields = (VMStateField[]) {
        VMSTATE_UINT32_ARRAY(analog, IMX7AnalogState, ANALOG_MAX),
        VMSTATE_UINT32_ARRAY(pmu,    IMX7AnalogState, PMU_MAX),
        VMSTATE_END_OF_LIST()
    },
};

static void imx7_analog_class_init(ObjectClass *klass, void *data)
{
    DeviceClass *dc = DEVICE_CLASS(klass);

    dc->reset = imx7_analog_reset;
    dc->vmsd  = &vmstate_imx7_analog;
    dc->desc  = "i.MX7 Analog Module";
}

static const TypeInfo imx7_analog_info = {
    .name          = TYPE_IMX7_ANALOG,
    .parent        = TYPE_SYS_BUS_DEVICE,
    .instance_size = sizeof(IMX7AnalogState),
    .instance_init = imx7_analog_init,
    .class_init    = imx7_analog_class_init,
};

static void imx7_ccm_register_type(void)
{
    type_register_static(&imx7_ccm_info);
    type_register_static(&imx7_analog_info);
}
type_init(imx7_ccm_register_type)
Commit	Line	Data
e9e0ef15 AS	1	/*
	2	* Copyright (c) 2018, Impinj, Inc.
	3	*
	4	* i.MX7 CCM, PMU and ANALOG IP blocks emulation code
	5	*
	6	* Author: Andrey Smirnov <[email protected]>
	7	*
	8	* This work is licensed under the terms of the GNU GPL, version 2 or later.
	9	* See the COPYING file in the top-level directory.
	10	*/
	11
	12	#include "qemu/osdep.h"
	13	#include "qemu/log.h"
0b8fa32f	14	#include "qemu/module.h"
e9e0ef15 AS	15
e9e0ef15 AS	16	#include "hw/misc/imx7_ccm.h"
d6454270	17	#include "migration/vmstate.h"
e9e0ef15 AS	18
	19	static void imx7_analog_reset(DeviceState *dev)
	20	{
	21	IMX7AnalogState *s = IMX7_ANALOG(dev);
	22
	23	memset(s->pmu, 0, sizeof(s->pmu));
	24	memset(s->analog, 0, sizeof(s->analog));
	25
	26	s->analog[ANALOG_PLL_ARM] = 0x00002042;
	27	s->analog[ANALOG_PLL_DDR] = 0x0060302c;
	28	s->analog[ANALOG_PLL_DDR_SS] = 0x00000000;
	29	s->analog[ANALOG_PLL_DDR_NUM] = 0x06aaac4d;
	30	s->analog[ANALOG_PLL_DDR_DENOM] = 0x100003ec;
	31	s->analog[ANALOG_PLL_480] = 0x00002000;
	32	s->analog[ANALOG_PLL_480A] = 0x52605a56;
	33	s->analog[ANALOG_PLL_480B] = 0x52525216;
	34	s->analog[ANALOG_PLL_ENET] = 0x00001fc0;
	35	s->analog[ANALOG_PLL_AUDIO] = 0x0001301b;
	36	s->analog[ANALOG_PLL_AUDIO_SS] = 0x00000000;
	37	s->analog[ANALOG_PLL_AUDIO_NUM] = 0x05f5e100;
	38	s->analog[ANALOG_PLL_AUDIO_DENOM] = 0x2964619c;
	39	s->analog[ANALOG_PLL_VIDEO] = 0x0008201b;
	40	s->analog[ANALOG_PLL_VIDEO_SS] = 0x00000000;
	41	s->analog[ANALOG_PLL_VIDEO_NUM] = 0x0000f699;
	42	s->analog[ANALOG_PLL_VIDEO_DENOM] = 0x000f4240;
	43	s->analog[ANALOG_PLL_MISC0] = 0x00000000;
	44
	45	/* all PLLs need to be locked */
	46	s->analog[ANALOG_PLL_ARM] \|= ANALOG_PLL_LOCK;
	47	s->analog[ANALOG_PLL_DDR] \|= ANALOG_PLL_LOCK;
	48	s->analog[ANALOG_PLL_480] \|= ANALOG_PLL_LOCK;
	49	s->analog[ANALOG_PLL_480A] \|= ANALOG_PLL_LOCK;
	50	s->analog[ANALOG_PLL_480B] \|= ANALOG_PLL_LOCK;
	51	s->analog[ANALOG_PLL_ENET] \|= ANALOG_PLL_LOCK;
	52	s->analog[ANALOG_PLL_AUDIO] \|= ANALOG_PLL_LOCK;
	53	s->analog[ANALOG_PLL_VIDEO] \|= ANALOG_PLL_LOCK;
	54	s->analog[ANALOG_PLL_MISC0] \|= ANALOG_PLL_LOCK;
	55
	56	/*
	57	* Since I couldn't find any info about this in the reference
	58	* manual the value of this register is based strictly on matching
	59	* what Linux kernel expects it to be.
	60	*/
	61	s->analog[ANALOG_DIGPROG] = 0x720000;
	62	/*
	63	* Set revision to be 1.0 (Arbitrary choice, no particular
	64	* reason).
	65	*/
	66	s->analog[ANALOG_DIGPROG] \|= 0x000010;
	67	}
	68
	69	static void imx7_ccm_reset(DeviceState *dev)
	70	{
	71	IMX7CCMState *s = IMX7_CCM(dev);
	72
	73	memset(s->ccm, 0, sizeof(s->ccm));
	74	}
	75
	76	#define CCM_INDEX(offset) (((offset) & ~(hwaddr)0xF) / sizeof(uint32_t))
	77	#define CCM_BITOP(offset) ((offset) & (hwaddr)0xF)
	78
	79	enum {
	80	CCM_BITOP_NONE = 0x00,
	81	CCM_BITOP_SET = 0x04,
82	CCM_BITOP_CLR = 0x08,
83	CCM_BITOP_TOG = 0x0C,
84	};
85
86	static uint64_t imx7_set_clr_tog_read(void *opaque, hwaddr offset,
87	unsigned size)
88	{
89	const uint32_t *mmio = opaque;
90
91	return mmio[CCM_INDEX(offset)];
92	}
93
94	static void imx7_set_clr_tog_write(void *opaque, hwaddr offset,
95	uint64_t value, unsigned size)
96	{
97	const uint8_t bitop = CCM_BITOP(offset);
98	const uint32_t index = CCM_INDEX(offset);
99	uint32_t *mmio = opaque;
100
101	switch (bitop) {
102	case CCM_BITOP_NONE:
103	mmio[index] = value;
104	break;
105	case CCM_BITOP_SET:
106	mmio[index] \|= value;
107	break;
108	case CCM_BITOP_CLR:
109	mmio[index] &= ~value;
110	break;
111	case CCM_BITOP_TOG:
112	mmio[index] ^= value;
113	break;
114	};
115	}
116
117	static const struct MemoryRegionOps imx7_set_clr_tog_ops = {
118	.read = imx7_set_clr_tog_read,
119	.write = imx7_set_clr_tog_write,
120	.endianness = DEVICE_NATIVE_ENDIAN,
121	.impl = {
122	/*
123	* Our device would not work correctly if the guest was doing
124	* unaligned access. This might not be a limitation on the real
125	* device but in practice there is no reason for a guest to access
126	* this device unaligned.
127	*/
128	.min_access_size = 4,
129	.max_access_size = 4,
130	.unaligned = false,
131	},
132	};
133
134	static const struct MemoryRegionOps imx7_digprog_ops = {
135	.read = imx7_set_clr_tog_read,
136	.endianness = DEVICE_NATIVE_ENDIAN,
137	.impl = {
138	.min_access_size = 4,
139	.max_access_size = 4,
140	.unaligned = false,
141	},
142	};
143
144	static void imx7_ccm_init(Object *obj)
145	{
146	SysBusDevice *sd = SYS_BUS_DEVICE(obj);
147	IMX7CCMState *s = IMX7_CCM(obj);
148
149	memory_region_init_io(&s->iomem,
150	obj,
151	&imx7_set_clr_tog_ops,
152	s->ccm,
153	TYPE_IMX7_CCM ".ccm",
154	sizeof(s->ccm));
155
156	sysbus_init_mmio(sd, &s->iomem);
157	}
158
159	static void imx7_analog_init(Object *obj)
160	{
161	SysBusDevice *sd = SYS_BUS_DEVICE(obj);
162	IMX7AnalogState *s = IMX7_ANALOG(obj);
163
164	memory_region_init(&s->mmio.container, obj, TYPE_IMX7_ANALOG,
165	0x10000);
166
167	memory_region_init_io(&s->mmio.analog,
168	obj,
169	&imx7_set_clr_tog_ops,
170	s->analog,
171	TYPE_IMX7_ANALOG,
172	sizeof(s->analog));
173
174	memory_region_add_subregion(&s->mmio.container,
175	0x60, &s->mmio.analog);
176
177	memory_region_init_io(&s->mmio.pmu,
178	obj,
179	&imx7_set_clr_tog_ops,
180	s->pmu,
181	TYPE_IMX7_ANALOG ".pmu",
182	sizeof(s->pmu));
183
184	memory_region_add_subregion(&s->mmio.container,
185	0x200, &s->mmio.pmu);
186
187	memory_region_init_io(&s->mmio.digprog,
188	obj,
189	&imx7_digprog_ops,
190	&s->analog[ANALOG_DIGPROG],
191	TYPE_IMX7_ANALOG ".digprog",
192	sizeof(uint32_t));
193
194	memory_region_add_subregion_overlap(&s->mmio.container,
195	0x800, &s->mmio.digprog, 10);
196
197
198	sysbus_init_mmio(sd, &s->mmio.container);
199	}
200
201	static const VMStateDescription vmstate_imx7_ccm = {
202	.name = TYPE_IMX7_CCM,
203	.version_id = 1,
204	.minimum_version_id = 1,
205	.fields = (VMStateField[]) {
206	VMSTATE_UINT32_ARRAY(ccm, IMX7CCMState, CCM_MAX),
207	VMSTATE_END_OF_LIST()
208	},
209	};
210
211	static uint32_t imx7_ccm_get_clock_frequency(IMXCCMState *dev, IMXClk clock)
212	{
213	/*
214	* This function is "consumed" by GPT emulation code, however on
215	* i.MX7 each GPT block can have their own clock root. This means
216	* that this functions needs somehow to know requester's identity
217	* and the way to pass it: be it via additional IMXClk constants
218	* or by adding another argument to this method needs to be
219	* figured out
220	*/
221	qemu_log_mask(LOG_GUEST_ERROR, "[%s]%s: Not implemented\n",
222	TYPE_IMX7_CCM, __func__);
223	return 0;
224	}
225
226	static void imx7_ccm_class_init(ObjectClass klass, void data)
227	{
228	DeviceClass *dc = DEVICE_CLASS(klass);
229	IMXCCMClass *ccm = IMX_CCM_CLASS(klass);
230
231	dc->reset = imx7_ccm_reset;
232	dc->vmsd = &vmstate_imx7_ccm;
233	dc->desc = "i.MX7 Clock Control Module";
234
235	ccm->get_clock_frequency = imx7_ccm_get_clock_frequency;
236	}
237
238	static const TypeInfo imx7_ccm_info = {
239	.name = TYPE_IMX7_CCM,
240	.parent = TYPE_IMX_CCM,
241	.instance_size = sizeof(IMX7CCMState),
242	.instance_init = imx7_ccm_init,
243	.class_init = imx7_ccm_class_init,
244	};
245
246	static const VMStateDescription vmstate_imx7_analog = {
247	.name = TYPE_IMX7_ANALOG,
248	.version_id = 1,
249	.minimum_version_id = 1,
250	.fields = (VMStateField[]) {
251	VMSTATE_UINT32_ARRAY(analog, IMX7AnalogState, ANALOG_MAX),
252	VMSTATE_UINT32_ARRAY(pmu, IMX7AnalogState, PMU_MAX),
253	VMSTATE_END_OF_LIST()
254	},
255	};
256
257	static void imx7_analog_class_init(ObjectClass klass, void data)
258	{
259	DeviceClass *dc = DEVICE_CLASS(klass);
260
261	dc->reset = imx7_analog_reset;
262	dc->vmsd = &vmstate_imx7_analog;
263	dc->desc = "i.MX7 Analog Module";
264	}
265
266	static const TypeInfo imx7_analog_info = {
267	.name = TYPE_IMX7_ANALOG,
268	.parent = TYPE_SYS_BUS_DEVICE,
269	.instance_size = sizeof(IMX7AnalogState),
270	.instance_init = imx7_analog_init,
271	.class_init = imx7_analog_class_init,
272	};
273
274	static void imx7_ccm_register_type(void)
275	{
276	type_register_static(&imx7_ccm_info);
277	type_register_static(&imx7_analog_info);
278	}
279	type_init(imx7_ccm_register_type)