hw/ppc/pnv_occ.c - third_party/qemu - Git at Google

 /*
  * QEMU PowerPC PowerNV Emulation of a few OCC related registers
  *
  * Copyright (c) 2015-2017, IBM Corporation.
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License, version 2, as
  * published by the Free Software Foundation.
  *
  * 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 "qemu/osdep.h"
 #include "target/ppc/cpu.h"
 #include "qapi/error.h"
 #include "qemu/log.h"
 #include "qemu/module.h"
 #include "hw/qdev-properties.h"
 #include "hw/ppc/pnv.h"
 #include "hw/ppc/pnv_xscom.h"
 #include "hw/ppc/pnv_occ.h"

 #define OCB_OCI_OCCMISC         0x4020
 #define OCB_OCI_OCCMISC_AND     0x4021
 #define OCB_OCI_OCCMISC_OR      0x4022

 /* OCC sensors */
 #define OCC_SENSOR_DATA_BLOCK_OFFSET          0x580000
 #define OCC_SENSOR_DATA_VALID                 0x580001
 #define OCC_SENSOR_DATA_VERSION               0x580002
 #define OCC_SENSOR_DATA_READING_VERSION       0x580004
 #define OCC_SENSOR_DATA_NR_SENSORS            0x580008
 #define OCC_SENSOR_DATA_NAMES_OFFSET          0x580010
 #define OCC_SENSOR_DATA_READING_PING_OFFSET   0x580014
 #define OCC_SENSOR_DATA_READING_PONG_OFFSET   0x58000c
 #define OCC_SENSOR_DATA_NAME_LENGTH           0x58000d
 #define OCC_SENSOR_NAME_STRUCTURE_TYPE        0x580023
 #define OCC_SENSOR_LOC_CORE                   0x580022
 #define OCC_SENSOR_LOC_GPU                    0x580020
 #define OCC_SENSOR_TYPE_POWER                 0x580003
 #define OCC_SENSOR_NAME                       0x580005
 #define HWMON_SENSORS_MASK                    0x58001e
 #define SLW_IMAGE_BASE                        0x0

 static void pnv_occ_set_misc(PnvOCC *occ, uint64_t val)
 {
     bool irq_state;
     PnvOCCClass *poc = PNV_OCC_GET_CLASS(occ);

     val &= 0xffff000000000000ull;

     occ->occmisc = val;
     irq_state = !!(val >> 63);
     pnv_psi_irq_set(occ->psi, poc->psi_irq, irq_state);
 }

 static uint64_t pnv_occ_power8_xscom_read(void *opaque, hwaddr addr,
                                           unsigned size)
 {
     PnvOCC *occ = PNV_OCC(opaque);
     uint32_t offset = addr >> 3;
     uint64_t val = 0;

     switch (offset) {
     case OCB_OCI_OCCMISC:
         val = occ->occmisc;
         break;
     default:
         qemu_log_mask(LOG_UNIMP, "OCC Unimplemented register: Ox%"
                       HWADDR_PRIx "\n", addr >> 3);
     }
     return val;
 }

 static void pnv_occ_power8_xscom_write(void *opaque, hwaddr addr,
                                        uint64_t val, unsigned size)
 {
     PnvOCC *occ = PNV_OCC(opaque);
     uint32_t offset = addr >> 3;

     switch (offset) {
     case OCB_OCI_OCCMISC_AND:
         pnv_occ_set_misc(occ, occ->occmisc & val);
         break;
     case OCB_OCI_OCCMISC_OR:
         pnv_occ_set_misc(occ, occ->occmisc | val);
         break;
     case OCB_OCI_OCCMISC:
         pnv_occ_set_misc(occ, val);
         break;
     default:
         qemu_log_mask(LOG_UNIMP, "OCC Unimplemented register: Ox%"
                       HWADDR_PRIx "\n", addr >> 3);
     }
 }

 static uint64_t pnv_occ_common_area_read(void *opaque, hwaddr addr,
                                          unsigned width)
 {
     switch (addr) {
     /*
      * occ-sensor sanity check that asserts the sensor
      * header block
      */
     case OCC_SENSOR_DATA_BLOCK_OFFSET:
     case OCC_SENSOR_DATA_VALID:
     case OCC_SENSOR_DATA_VERSION:
     case OCC_SENSOR_DATA_READING_VERSION:
     case OCC_SENSOR_DATA_NR_SENSORS:
     case OCC_SENSOR_DATA_NAMES_OFFSET:
     case OCC_SENSOR_DATA_READING_PING_OFFSET:
     case OCC_SENSOR_DATA_READING_PONG_OFFSET:
     case OCC_SENSOR_NAME_STRUCTURE_TYPE:
         return 1;
     case OCC_SENSOR_DATA_NAME_LENGTH:
         return 0x30;
     case OCC_SENSOR_LOC_CORE:
         return 0x0040;
     case OCC_SENSOR_TYPE_POWER:
         return 0x0080;
     case OCC_SENSOR_NAME:
         return 0x1000;
     case HWMON_SENSORS_MASK:
     case OCC_SENSOR_LOC_GPU:
         return 0x8e00;
     case SLW_IMAGE_BASE:
         return 0x1000000000000000;
     }
     return 0;
 }

 static void pnv_occ_common_area_write(void *opaque, hwaddr addr,
                                              uint64_t val, unsigned width)
 {
     /* callback function defined to occ common area write */
     return;
 }

 static const MemoryRegionOps pnv_occ_power8_xscom_ops = {
     .read = pnv_occ_power8_xscom_read,
     .write = pnv_occ_power8_xscom_write,
     .valid.min_access_size = 8,
     .valid.max_access_size = 8,
     .impl.min_access_size = 8,
     .impl.max_access_size = 8,
     .endianness = DEVICE_BIG_ENDIAN,
 };

 const MemoryRegionOps pnv_occ_sram_ops = {
     .read = pnv_occ_common_area_read,
     .write = pnv_occ_common_area_write,
     .valid.min_access_size = 1,
     .valid.max_access_size = 8,
     .impl.min_access_size = 1,
     .impl.max_access_size = 8,
     .endianness = DEVICE_BIG_ENDIAN,
 };

 static void pnv_occ_power8_class_init(ObjectClass *klass, void *data)
 {
     PnvOCCClass *poc = PNV_OCC_CLASS(klass);

     poc->xscom_size = PNV_XSCOM_OCC_SIZE;
     poc->xscom_ops = &pnv_occ_power8_xscom_ops;
     poc->psi_irq = PSIHB_IRQ_OCC;
 }

 static const TypeInfo pnv_occ_power8_type_info = {
     .name          = TYPE_PNV8_OCC,
     .parent        = TYPE_PNV_OCC,
     .instance_size = sizeof(PnvOCC),
     .class_init    = pnv_occ_power8_class_init,
 };

 #define P9_OCB_OCI_OCCMISC              0x6080
 #define P9_OCB_OCI_OCCMISC_CLEAR        0x6081
 #define P9_OCB_OCI_OCCMISC_OR           0x6082


 static uint64_t pnv_occ_power9_xscom_read(void *opaque, hwaddr addr,
                                           unsigned size)
 {
     PnvOCC *occ = PNV_OCC(opaque);
     uint32_t offset = addr >> 3;
     uint64_t val = 0;

     switch (offset) {
     case P9_OCB_OCI_OCCMISC:
         val = occ->occmisc;
         break;
     default:
         qemu_log_mask(LOG_UNIMP, "OCC Unimplemented register: Ox%"
                       HWADDR_PRIx "\n", addr >> 3);
     }
     return val;
 }

 static void pnv_occ_power9_xscom_write(void *opaque, hwaddr addr,
                                        uint64_t val, unsigned size)
 {
     PnvOCC *occ = PNV_OCC(opaque);
     uint32_t offset = addr >> 3;

     switch (offset) {
     case P9_OCB_OCI_OCCMISC_CLEAR:
         pnv_occ_set_misc(occ, 0);
         break;
     case P9_OCB_OCI_OCCMISC_OR:
         pnv_occ_set_misc(occ, occ->occmisc | val);
         break;
     case P9_OCB_OCI_OCCMISC:
         pnv_occ_set_misc(occ, val);
        break;
     default:
         qemu_log_mask(LOG_UNIMP, "OCC Unimplemented register: Ox%"
                       HWADDR_PRIx "\n", addr >> 3);
     }
 }

 static const MemoryRegionOps pnv_occ_power9_xscom_ops = {
     .read = pnv_occ_power9_xscom_read,
     .write = pnv_occ_power9_xscom_write,
     .valid.min_access_size = 8,
     .valid.max_access_size = 8,
     .impl.min_access_size = 8,
     .impl.max_access_size = 8,
     .endianness = DEVICE_BIG_ENDIAN,
 };

 static void pnv_occ_power9_class_init(ObjectClass *klass, void *data)
 {
     PnvOCCClass *poc = PNV_OCC_CLASS(klass);
     DeviceClass *dc = DEVICE_CLASS(klass);

     dc->desc = "PowerNV OCC Controller (POWER9)";
     poc->xscom_size = PNV9_XSCOM_OCC_SIZE;
     poc->xscom_ops = &pnv_occ_power9_xscom_ops;
     poc->psi_irq = PSIHB9_IRQ_OCC;
 }

 static const TypeInfo pnv_occ_power9_type_info = {
     .name          = TYPE_PNV9_OCC,
     .parent        = TYPE_PNV_OCC,
     .instance_size = sizeof(PnvOCC),
     .class_init    = pnv_occ_power9_class_init,
 };

 static void pnv_occ_power10_class_init(ObjectClass *klass, void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);

     dc->desc = "PowerNV OCC Controller (POWER10)";
 }

 static const TypeInfo pnv_occ_power10_type_info = {
     .name          = TYPE_PNV10_OCC,
     .parent        = TYPE_PNV9_OCC,
     .class_init    = pnv_occ_power10_class_init,
 };

 static void pnv_occ_realize(DeviceState *dev, Error **errp)
 {
     PnvOCC *occ = PNV_OCC(dev);
     PnvOCCClass *poc = PNV_OCC_GET_CLASS(occ);

     assert(occ->psi);

     occ->occmisc = 0;

     /* XScom region for OCC registers */
     pnv_xscom_region_init(&occ->xscom_regs, OBJECT(dev), poc->xscom_ops,
                           occ, "xscom-occ", poc->xscom_size);

     /* OCC common area mmio region for OCC SRAM registers */
     memory_region_init_io(&occ->sram_regs, OBJECT(dev), &pnv_occ_sram_ops,
                           occ, "occ-common-area",
                           PNV_OCC_SENSOR_DATA_BLOCK_SIZE);
 }

 static Property pnv_occ_properties[] = {
     DEFINE_PROP_LINK("psi", PnvOCC, psi, TYPE_PNV_PSI, PnvPsi *),
     DEFINE_PROP_END_OF_LIST(),
 };

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

     dc->realize = pnv_occ_realize;
     dc->desc = "PowerNV OCC Controller";
     device_class_set_props(dc, pnv_occ_properties);
     dc->user_creatable = false;
 }

 static const TypeInfo pnv_occ_type_info = {
     .name          = TYPE_PNV_OCC,
     .parent        = TYPE_DEVICE,
     .instance_size = sizeof(PnvOCC),
     .class_init    = pnv_occ_class_init,
     .class_size    = sizeof(PnvOCCClass),
     .abstract      = true,
 };

 static void pnv_occ_register_types(void)
 {
     type_register_static(&pnv_occ_type_info);
     type_register_static(&pnv_occ_power8_type_info);
     type_register_static(&pnv_occ_power9_type_info);
     type_register_static(&pnv_occ_power10_type_info);
 }

 type_init(pnv_occ_register_types);
	/*
	* QEMU PowerPC PowerNV Emulation of a few OCC related registers
	*
	* Copyright (c) 2015-2017, IBM Corporation.
	*
	* This program is free software; you can redistribute it and/or modify
	* it under the terms of the GNU General Public License, version 2, as
	* published by the Free Software Foundation.
	*
	* 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 "qemu/osdep.h"
	#include "target/ppc/cpu.h"
	#include "qapi/error.h"
	#include "qemu/log.h"
	#include "qemu/module.h"
	#include "hw/qdev-properties.h"
	#include "hw/ppc/pnv.h"
	#include "hw/ppc/pnv_xscom.h"
	#include "hw/ppc/pnv_occ.h"

	#define OCB_OCI_OCCMISC 0x4020
	#define OCB_OCI_OCCMISC_AND 0x4021
	#define OCB_OCI_OCCMISC_OR 0x4022

	/* OCC sensors */
	#define OCC_SENSOR_DATA_BLOCK_OFFSET 0x580000
	#define OCC_SENSOR_DATA_VALID 0x580001
	#define OCC_SENSOR_DATA_VERSION 0x580002
	#define OCC_SENSOR_DATA_READING_VERSION 0x580004
	#define OCC_SENSOR_DATA_NR_SENSORS 0x580008
	#define OCC_SENSOR_DATA_NAMES_OFFSET 0x580010
	#define OCC_SENSOR_DATA_READING_PING_OFFSET 0x580014
	#define OCC_SENSOR_DATA_READING_PONG_OFFSET 0x58000c
	#define OCC_SENSOR_DATA_NAME_LENGTH 0x58000d
	#define OCC_SENSOR_NAME_STRUCTURE_TYPE 0x580023
	#define OCC_SENSOR_LOC_CORE 0x580022
	#define OCC_SENSOR_LOC_GPU 0x580020
	#define OCC_SENSOR_TYPE_POWER 0x580003
	#define OCC_SENSOR_NAME 0x580005
	#define HWMON_SENSORS_MASK 0x58001e
	#define SLW_IMAGE_BASE 0x0

	static void pnv_occ_set_misc(PnvOCC *occ, uint64_t val)
	{
	bool irq_state;
	PnvOCCClass *poc = PNV_OCC_GET_CLASS(occ);

	val &= 0xffff000000000000ull;

	occ->occmisc = val;
	irq_state = !!(val >> 63);
	pnv_psi_irq_set(occ->psi, poc->psi_irq, irq_state);
	}

	static uint64_t pnv_occ_power8_xscom_read(void *opaque, hwaddr addr,
	unsigned size)
	{
	PnvOCC *occ = PNV_OCC(opaque);
	uint32_t offset = addr >> 3;
	uint64_t val = 0;

	switch (offset) {
	case OCB_OCI_OCCMISC:
	val = occ->occmisc;
	break;
	default:
	qemu_log_mask(LOG_UNIMP, "OCC Unimplemented register: Ox%"
	HWADDR_PRIx "\n", addr >> 3);
	}
	return val;
	}

	static void pnv_occ_power8_xscom_write(void *opaque, hwaddr addr,
	uint64_t val, unsigned size)
	{
	PnvOCC *occ = PNV_OCC(opaque);
	uint32_t offset = addr >> 3;

	switch (offset) {
	case OCB_OCI_OCCMISC_AND:
	pnv_occ_set_misc(occ, occ->occmisc & val);
	break;
	case OCB_OCI_OCCMISC_OR:
	pnv_occ_set_misc(occ, occ->occmisc \| val);
	break;
	case OCB_OCI_OCCMISC:
	pnv_occ_set_misc(occ, val);
	break;
	default:
	qemu_log_mask(LOG_UNIMP, "OCC Unimplemented register: Ox%"
	HWADDR_PRIx "\n", addr >> 3);
	}
	}

	static uint64_t pnv_occ_common_area_read(void *opaque, hwaddr addr,
	unsigned width)
	{
	switch (addr) {
	/*
	* occ-sensor sanity check that asserts the sensor
	* header block
	*/
	case OCC_SENSOR_DATA_BLOCK_OFFSET:
	case OCC_SENSOR_DATA_VALID:
	case OCC_SENSOR_DATA_VERSION:
	case OCC_SENSOR_DATA_READING_VERSION:
	case OCC_SENSOR_DATA_NR_SENSORS:
	case OCC_SENSOR_DATA_NAMES_OFFSET:
	case OCC_SENSOR_DATA_READING_PING_OFFSET:
	case OCC_SENSOR_DATA_READING_PONG_OFFSET:
	case OCC_SENSOR_NAME_STRUCTURE_TYPE:
	return 1;
	case OCC_SENSOR_DATA_NAME_LENGTH:
	return 0x30;
	case OCC_SENSOR_LOC_CORE:
	return 0x0040;
	case OCC_SENSOR_TYPE_POWER:
	return 0x0080;
	case OCC_SENSOR_NAME:
	return 0x1000;
	case HWMON_SENSORS_MASK:
	case OCC_SENSOR_LOC_GPU:
	return 0x8e00;
	case SLW_IMAGE_BASE:
	return 0x1000000000000000;
	}
	return 0;
	}

	static void pnv_occ_common_area_write(void *opaque, hwaddr addr,
	uint64_t val, unsigned width)
	{
	/* callback function defined to occ common area write */
	return;
	}

	static const MemoryRegionOps pnv_occ_power8_xscom_ops = {
	.read = pnv_occ_power8_xscom_read,
	.write = pnv_occ_power8_xscom_write,
	.valid.min_access_size = 8,
	.valid.max_access_size = 8,
	.impl.min_access_size = 8,
	.impl.max_access_size = 8,
	.endianness = DEVICE_BIG_ENDIAN,
	};

	const MemoryRegionOps pnv_occ_sram_ops = {
	.read = pnv_occ_common_area_read,
	.write = pnv_occ_common_area_write,
	.valid.min_access_size = 1,
	.valid.max_access_size = 8,
	.impl.min_access_size = 1,
	.impl.max_access_size = 8,
	.endianness = DEVICE_BIG_ENDIAN,
	};

	static void pnv_occ_power8_class_init(ObjectClass klass, void data)
	{
	PnvOCCClass *poc = PNV_OCC_CLASS(klass);

	poc->xscom_size = PNV_XSCOM_OCC_SIZE;
	poc->xscom_ops = &pnv_occ_power8_xscom_ops;
	poc->psi_irq = PSIHB_IRQ_OCC;
	}

	static const TypeInfo pnv_occ_power8_type_info = {
	.name = TYPE_PNV8_OCC,
	.parent = TYPE_PNV_OCC,
	.instance_size = sizeof(PnvOCC),
	.class_init = pnv_occ_power8_class_init,
	};

	#define P9_OCB_OCI_OCCMISC 0x6080
	#define P9_OCB_OCI_OCCMISC_CLEAR 0x6081
	#define P9_OCB_OCI_OCCMISC_OR 0x6082


	static uint64_t pnv_occ_power9_xscom_read(void *opaque, hwaddr addr,
	unsigned size)
	{
	PnvOCC *occ = PNV_OCC(opaque);
	uint32_t offset = addr >> 3;
	uint64_t val = 0;

	switch (offset) {
	case P9_OCB_OCI_OCCMISC:
	val = occ->occmisc;
	break;
	default:
	qemu_log_mask(LOG_UNIMP, "OCC Unimplemented register: Ox%"
	HWADDR_PRIx "\n", addr >> 3);
	}
	return val;
	}

	static void pnv_occ_power9_xscom_write(void *opaque, hwaddr addr,
	uint64_t val, unsigned size)
	{
	PnvOCC *occ = PNV_OCC(opaque);
	uint32_t offset = addr >> 3;

	switch (offset) {
	case P9_OCB_OCI_OCCMISC_CLEAR:
	pnv_occ_set_misc(occ, 0);
	break;
	case P9_OCB_OCI_OCCMISC_OR:
	pnv_occ_set_misc(occ, occ->occmisc \| val);
	break;
	case P9_OCB_OCI_OCCMISC:
	pnv_occ_set_misc(occ, val);
	break;
	default:
	qemu_log_mask(LOG_UNIMP, "OCC Unimplemented register: Ox%"
	HWADDR_PRIx "\n", addr >> 3);
	}
	}

	static const MemoryRegionOps pnv_occ_power9_xscom_ops = {
	.read = pnv_occ_power9_xscom_read,
	.write = pnv_occ_power9_xscom_write,
	.valid.min_access_size = 8,
	.valid.max_access_size = 8,
	.impl.min_access_size = 8,
	.impl.max_access_size = 8,
	.endianness = DEVICE_BIG_ENDIAN,
	};

	static void pnv_occ_power9_class_init(ObjectClass klass, void data)
	{
	PnvOCCClass *poc = PNV_OCC_CLASS(klass);
	DeviceClass *dc = DEVICE_CLASS(klass);

	dc->desc = "PowerNV OCC Controller (POWER9)";
	poc->xscom_size = PNV9_XSCOM_OCC_SIZE;
	poc->xscom_ops = &pnv_occ_power9_xscom_ops;
	poc->psi_irq = PSIHB9_IRQ_OCC;
	}

	static const TypeInfo pnv_occ_power9_type_info = {
	.name = TYPE_PNV9_OCC,
	.parent = TYPE_PNV_OCC,
	.instance_size = sizeof(PnvOCC),
	.class_init = pnv_occ_power9_class_init,
	};

	static void pnv_occ_power10_class_init(ObjectClass klass, void data)
	{
	DeviceClass *dc = DEVICE_CLASS(klass);

	dc->desc = "PowerNV OCC Controller (POWER10)";
	}

	static const TypeInfo pnv_occ_power10_type_info = {
	.name = TYPE_PNV10_OCC,
	.parent = TYPE_PNV9_OCC,
	.class_init = pnv_occ_power10_class_init,
	};

	static void pnv_occ_realize(DeviceState dev, Error *errp)
	{
	PnvOCC *occ = PNV_OCC(dev);
	PnvOCCClass *poc = PNV_OCC_GET_CLASS(occ);

	assert(occ->psi);

	occ->occmisc = 0;

	/* XScom region for OCC registers */
	pnv_xscom_region_init(&occ->xscom_regs, OBJECT(dev), poc->xscom_ops,
	occ, "xscom-occ", poc->xscom_size);

	/* OCC common area mmio region for OCC SRAM registers */
	memory_region_init_io(&occ->sram_regs, OBJECT(dev), &pnv_occ_sram_ops,
	occ, "occ-common-area",
	PNV_OCC_SENSOR_DATA_BLOCK_SIZE);
	}

	static Property pnv_occ_properties[] = {
	DEFINE_PROP_LINK("psi", PnvOCC, psi, TYPE_PNV_PSI, PnvPsi *),
	DEFINE_PROP_END_OF_LIST(),
	};

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

	dc->realize = pnv_occ_realize;
	dc->desc = "PowerNV OCC Controller";
	device_class_set_props(dc, pnv_occ_properties);
	dc->user_creatable = false;
	}

	static const TypeInfo pnv_occ_type_info = {
	.name = TYPE_PNV_OCC,
	.parent = TYPE_DEVICE,
	.instance_size = sizeof(PnvOCC),
	.class_init = pnv_occ_class_init,
	.class_size = sizeof(PnvOCCClass),
	.abstract = true,
	};

	static void pnv_occ_register_types(void)
	{
	type_register_static(&pnv_occ_type_info);
	type_register_static(&pnv_occ_power8_type_info);
	type_register_static(&pnv_occ_power9_type_info);
	type_register_static(&pnv_occ_power10_type_info);
	}

	type_init(pnv_occ_register_types);