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Fri, 8 Dec 2023 15:19:58 +0000 (GMT) Received: from smtpav04.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 75CBB20040; Fri, 8 Dec 2023 15:19:56 +0000 (GMT) Received: from gfwr516.rchland.ibm.com (unknown [9.10.239.105]) by smtpav04.fra02v.mail.ibm.com (Postfix) with ESMTP; Fri, 8 Dec 2023 15:19:56 +0000 (GMT) From: Chalapathi V To: qemu-devel@nongnu.org Cc: qemu-ppc@nongnu.org, fbarrat@linux.ibm.com, npiggin@gmail.com, clg@kaod.org, calebs@us.ibm.com, chalapathi.v@ibm.com, chalapathi.v@linux.ibm.com, saif.abrar@linux.vnet.ibm.com Subject: [PATCH v8 2/3] hw/ppc: Add N1 chiplet model Date: Fri, 8 Dec 2023 09:19:46 -0600 Message-Id: <20231208151947.26951-3-chalapathi.v@linux.ibm.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20231208151947.26951-1-chalapathi.v@linux.ibm.com> References: <20231208151947.26951-1-chalapathi.v@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-GUID: u3Bt7xk-XOwv9PwGylzc4ZqmbtAYbXPB X-Proofpoint-ORIG-GUID: 720LezrNCQ-mQnO3l2HdpSzwncrHteCX X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.997,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2023-12-08_10,2023-12-07_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 suspectscore=0 spamscore=0 clxscore=1015 adultscore=0 mlxscore=0 malwarescore=0 bulkscore=0 impostorscore=0 mlxlogscore=999 lowpriorityscore=0 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2311290000 definitions=main-2312080125 Received-SPF: pass client-ip=148.163.156.1; envelope-from=chalapathi.v@linux.ibm.com; helo=mx0a-001b2d01.pphosted.com X-Spam_score_int: -19 X-Spam_score: -2.0 X-Spam_bar: -- X-Spam_report: (-2.0 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org The N1 chiplet handle the high speed i/o traffic over PCIe and others. The N1 chiplet consists of PowerBus Fabric controller, nest Memory Management Unit, chiplet control unit and more. This commit creates a N1 chiplet model and initialize and realize the pervasive chiplet model where chiplet control registers are implemented. This commit also implement the read/write method for the powerbus scom registers Signed-off-by: Chalapathi V Reviewed-by: Cédric Le Goater --- include/hw/ppc/pnv_n1_chiplet.h | 32 ++++++ include/hw/ppc/pnv_xscom.h | 6 ++ hw/ppc/pnv_n1_chiplet.c | 173 ++++++++++++++++++++++++++++++++ hw/ppc/meson.build | 1 + 4 files changed, 212 insertions(+) create mode 100644 include/hw/ppc/pnv_n1_chiplet.h create mode 100644 hw/ppc/pnv_n1_chiplet.c diff --git a/include/hw/ppc/pnv_n1_chiplet.h b/include/hw/ppc/pnv_n1_chiplet.h new file mode 100644 index 0000000000..a7ad039668 --- /dev/null +++ b/include/hw/ppc/pnv_n1_chiplet.h @@ -0,0 +1,32 @@ +/* + * QEMU PowerPC N1 chiplet model + * + * Copyright (c) 2023, IBM Corporation. + * + * SPDX-License-Identifier: GPL-2.0-or-later + */ + +#ifndef PPC_PNV_N1_CHIPLET_H +#define PPC_PNV_N1_CHIPLET_H + +#include "hw/ppc/pnv_nest_pervasive.h" + +#define TYPE_PNV_N1_CHIPLET "pnv-N1-chiplet" +#define PNV_N1_CHIPLET(obj) OBJECT_CHECK(PnvN1Chiplet, (obj), TYPE_PNV_N1_CHIPLET) + +typedef struct PnvPbScom { + uint64_t mode; + uint64_t hp_mode2_curr; +} PnvPbScom; + +typedef struct PnvN1Chiplet { + DeviceState parent; + MemoryRegion xscom_pb_eq_mr; + MemoryRegion xscom_pb_es_mr; + PnvNestChipletPervasive nest_pervasive; /* common pervasive chiplet unit */ +#define PNV_PB_SCOM_EQ_SIZE 8 + PnvPbScom eq[PNV_PB_SCOM_EQ_SIZE]; +#define PNV_PB_SCOM_ES_SIZE 4 + PnvPbScom es[PNV_PB_SCOM_ES_SIZE]; +} PnvN1Chiplet; +#endif /*PPC_PNV_N1_CHIPLET_H */ diff --git a/include/hw/ppc/pnv_xscom.h b/include/hw/ppc/pnv_xscom.h index 3e15706dec..535ae1dab0 100644 --- a/include/hw/ppc/pnv_xscom.h +++ b/include/hw/ppc/pnv_xscom.h @@ -173,6 +173,12 @@ struct PnvXScomInterfaceClass { #define PNV10_XSCOM_N1_CHIPLET_CTRL_REGS_BASE 0x3000000 #define PNV10_XSCOM_CHIPLET_CTRL_REGS_SIZE 0x400 +#define PNV10_XSCOM_N1_PB_SCOM_EQ_BASE 0x3011000 +#define PNV10_XSCOM_N1_PB_SCOM_EQ_SIZE 0x200 + +#define PNV10_XSCOM_N1_PB_SCOM_ES_BASE 0x3011300 +#define PNV10_XSCOM_N1_PB_SCOM_ES_SIZE 0x100 + #define PNV10_XSCOM_PEC_NEST_BASE 0x3011800 /* index goes downwards ... */ #define PNV10_XSCOM_PEC_NEST_SIZE 0x100 diff --git a/hw/ppc/pnv_n1_chiplet.c b/hw/ppc/pnv_n1_chiplet.c new file mode 100644 index 0000000000..03ff9fbad0 --- /dev/null +++ b/hw/ppc/pnv_n1_chiplet.c @@ -0,0 +1,173 @@ +/* + * QEMU PowerPC N1 chiplet model + * + * Copyright (c) 2023, IBM Corporation. + * + * SPDX-License-Identifier: GPL-2.0-or-later + */ + +#include "qemu/osdep.h" +#include "qemu/log.h" +#include "hw/qdev-properties.h" +#include "hw/ppc/pnv.h" +#include "hw/ppc/pnv_xscom.h" +#include "hw/ppc/pnv_n1_chiplet.h" +#include "hw/ppc/pnv_nest_pervasive.h" + +/* + * The n1 chiplet contains chiplet control unit, + * PowerBus/RaceTrack/Bridge logic, nest Memory Management Unit(nMMU) + * and more. + * + * In this model Nest1 chiplet control registers are modelled via common + * nest pervasive model and few PowerBus racetrack registers are modelled. + */ + +#define PB_SCOM_EQ0_HP_MODE2_CURR 0xe +#define PB_SCOM_ES3_MODE 0x8a + +static uint64_t pnv_n1_chiplet_pb_scom_eq_read(void *opaque, hwaddr addr, + unsigned size) +{ + PnvN1Chiplet *n1_chiplet = PNV_N1_CHIPLET(opaque); + uint32_t reg = addr >> 3; + uint64_t val = ~0ull; + + switch (reg) { + case PB_SCOM_EQ0_HP_MODE2_CURR: + val = n1_chiplet->eq[0].hp_mode2_curr; + break; + default: + qemu_log_mask(LOG_UNIMP, "%s: Invalid xscom read at 0x%" PRIx32 "\n", + __func__, reg); + } + return val; +} + +static void pnv_n1_chiplet_pb_scom_eq_write(void *opaque, hwaddr addr, + uint64_t val, unsigned size) +{ + PnvN1Chiplet *n1_chiplet = PNV_N1_CHIPLET(opaque); + uint32_t reg = addr >> 3; + + switch (reg) { + case PB_SCOM_EQ0_HP_MODE2_CURR: + n1_chiplet->eq[0].hp_mode2_curr = val; + break; + default: + qemu_log_mask(LOG_UNIMP, "%s: Invalid xscom write at 0x%" PRIx32 "\n", + __func__, reg); + } +} + +static const MemoryRegionOps pnv_n1_chiplet_pb_scom_eq_ops = { + .read = pnv_n1_chiplet_pb_scom_eq_read, + .write = pnv_n1_chiplet_pb_scom_eq_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 uint64_t pnv_n1_chiplet_pb_scom_es_read(void *opaque, hwaddr addr, + unsigned size) +{ + PnvN1Chiplet *n1_chiplet = PNV_N1_CHIPLET(opaque); + uint32_t reg = addr >> 3; + uint64_t val = ~0ull; + + switch (reg) { + case PB_SCOM_ES3_MODE: + val = n1_chiplet->es[3].mode; + break; + default: + qemu_log_mask(LOG_UNIMP, "%s: Invalid xscom read at 0x%" PRIx32 "\n", + __func__, reg); + } + return val; +} + +static void pnv_n1_chiplet_pb_scom_es_write(void *opaque, hwaddr addr, + uint64_t val, unsigned size) +{ + PnvN1Chiplet *n1_chiplet = PNV_N1_CHIPLET(opaque); + uint32_t reg = addr >> 3; + + switch (reg) { + case PB_SCOM_ES3_MODE: + n1_chiplet->es[3].mode = val; + break; + default: + qemu_log_mask(LOG_UNIMP, "%s: Invalid xscom write at 0x%" PRIx32 "\n", + __func__, reg); + } +} + +static const MemoryRegionOps pnv_n1_chiplet_pb_scom_es_ops = { + .read = pnv_n1_chiplet_pb_scom_es_read, + .write = pnv_n1_chiplet_pb_scom_es_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_n1_chiplet_realize(DeviceState *dev, Error **errp) +{ + PnvN1Chiplet *n1_chiplet = PNV_N1_CHIPLET(dev); + + /* Realize nest pervasive common chiplet model */ + if (!qdev_realize(DEVICE(&n1_chiplet->nest_pervasive), NULL, errp)) { + return; + } + + /* Nest1 chiplet power bus EQ xscom region */ + pnv_xscom_region_init(&n1_chiplet->xscom_pb_eq_mr, OBJECT(n1_chiplet), + &pnv_n1_chiplet_pb_scom_eq_ops, n1_chiplet, + "xscom-n1-chiplet-pb-scom-eq", + PNV10_XSCOM_N1_PB_SCOM_EQ_SIZE); + + /* Nest1 chiplet power bus ES xscom region */ + pnv_xscom_region_init(&n1_chiplet->xscom_pb_es_mr, OBJECT(n1_chiplet), + &pnv_n1_chiplet_pb_scom_es_ops, n1_chiplet, + "xscom-n1-chiplet-pb-scom-es", + PNV10_XSCOM_N1_PB_SCOM_ES_SIZE); +} + +static void pnv_n1_chiplet_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + + dc->desc = "PowerNV n1 chiplet"; + dc->realize = pnv_n1_chiplet_realize; +} + +static void pnv_n1_chiplet_instance_init(Object *obj) +{ + PnvN1Chiplet *n1_chiplet = PNV_N1_CHIPLET(obj); + + object_initialize_child(OBJECT(n1_chiplet), "nest-pervasive-common", + &n1_chiplet->nest_pervasive, + TYPE_PNV_NEST_CHIPLET_PERVASIVE); +} + +static const TypeInfo pnv_n1_chiplet_info = { + .name = TYPE_PNV_N1_CHIPLET, + .parent = TYPE_DEVICE, + .instance_init = pnv_n1_chiplet_instance_init, + .instance_size = sizeof(PnvN1Chiplet), + .class_init = pnv_n1_chiplet_class_init, + .interfaces = (InterfaceInfo[]) { + { TYPE_PNV_XSCOM_INTERFACE }, + { } + } +}; + +static void pnv_n1_chiplet_register_types(void) +{ + type_register_static(&pnv_n1_chiplet_info); +} + +type_init(pnv_n1_chiplet_register_types); diff --git a/hw/ppc/meson.build b/hw/ppc/meson.build index d6f6f94fcc..256e453c0c 100644 --- a/hw/ppc/meson.build +++ b/hw/ppc/meson.build @@ -52,6 +52,7 @@ ppc_ss.add(when: 'CONFIG_POWERNV', if_true: files( 'pnv_homer.c', 'pnv_pnor.c', 'pnv_nest_pervasive.c', + 'pnv_n1_chiplet.c', )) # PowerPC 4xx boards ppc_ss.add(when: 'CONFIG_PPC405', if_true: files(