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b=jQ/9mt0jidd+kxT6zK7UBh/xXFjXjXWzFUspLWR8i9idzNwLjqpNHmBpM2PA6nDemtzS gmNq80dc3TSvVgQyrM2oDtWhcd0YzmQzedJvOLnsBpyt2eRBCZwJDR+HAEemxmcjliF6 TkD1LEccIcvf1dNhpS87DzEoXS4wqkzLGyrl4QESIeKstH6EV7+U1J3lcbm/oJO7XvMf iJXEucuJuB1Jj6bPn+baWxqLgjLXItafM532Sjc/BR9FGyLR7WJU2M/gNa4fswapGd1V hckRPCxEfiXcRDqKfC+OK6oATGLsvGjg9B08mWD4kZI3/QPeRVBpfwFajjg5yFd11EpX mQ== From: Ninad Palsule To: qemu-devel@nongnu.org, clg@kaod.org, peter.maydell@linaro.org, andrew@codeconstruct.com.au, joel@jms.id.au, pbonzini@redhat.com, marcandre.lureau@redhat.com, berrange@redhat.com, thuth@redhat.com, philmd@linaro.org, lvivier@redhat.com Cc: Ninad Palsule , qemu-arm@nongnu.org, Andrew Jeffery Subject: [PATCH v7 04/10] hw/fsi: Introduce IBM's FSI Date: Thu, 26 Oct 2023 11:47:35 -0500 Message-Id: <20231026164741.1184058-5-ninad@linux.ibm.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20231026164741.1184058-1-ninad@linux.ibm.com> References: <20231026164741.1184058-1-ninad@linux.ibm.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: YlEnymWB0qNS29yhK41Zesgh3dmxNab1 X-Proofpoint-GUID: wqmJ3oRRn6BWRa6C8MCBp6bT7t6s-fJi X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.987,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2023-10-26_15,2023-10-26_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 bulkscore=0 mlxscore=0 impostorscore=0 clxscore=1015 priorityscore=1501 mlxlogscore=999 malwarescore=0 lowpriorityscore=0 phishscore=0 suspectscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2310170001 definitions=main-2310260145 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=148.163.158.5; envelope-from=ninad@linux.ibm.com; helo=mx0b-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 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+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @ibm.com) X-ZM-MESSAGEID: 1698338958502100003 Content-Type: text/plain; charset="utf-8" This is a part of patchset where IBM's Flexible Service Interface is introduced. This commit models the FSI bus. CFAM is hanging out of FSI bus. The bus is model such a way that it is embedded inside the FSI master which is a bus controller. The FSI master: A controller in the platform service processor (e.g. BMC) driving CFAM engine accesses into the POWER chip. At the hardware level FSI is a bit-based protocol supporting synchronous and DMA-driven accesses of engines in a CFAM. Signed-off-by: Andrew Jeffery Signed-off-by: Ninad Palsule Reviewed-by: Joel Stanley --- v2: - Incorporated review comments by Joel v5: - Incorporated review comments by Cedric. v6: - Incorporated review comments by Cedric & Daniel v7: - Cleaned up unused bits. --- include/hw/fsi/fsi-master.h | 30 +++++++ hw/fsi/fsi-master.c | 162 ++++++++++++++++++++++++++++++++++++ hw/fsi/fsi.c | 25 ++++++ hw/fsi/meson.build | 2 +- hw/fsi/trace-events | 2 + 5 files changed, 220 insertions(+), 1 deletion(-) create mode 100644 include/hw/fsi/fsi-master.h create mode 100644 hw/fsi/fsi-master.c create mode 100644 hw/fsi/fsi.c diff --git a/include/hw/fsi/fsi-master.h b/include/hw/fsi/fsi-master.h new file mode 100644 index 0000000000..847078919c --- /dev/null +++ b/include/hw/fsi/fsi-master.h @@ -0,0 +1,30 @@ +/* + * SPDX-License-Identifier: GPL-2.0-or-later + * Copyright (C) 2019 IBM Corp. + * + * IBM Flexible Service Interface Master + */ +#ifndef FSI_FSI_MASTER_H +#define FSI_FSI_MASTER_H + +#include "exec/memory.h" +#include "hw/qdev-core.h" +#include "hw/fsi/fsi.h" + +#define TYPE_FSI_MASTER "fsi.master" +OBJECT_DECLARE_SIMPLE_TYPE(FSIMasterState, FSI_MASTER) + +#define FSI_MASTER_NR_REGS ((0x2e0 >> 2) + 1) + +typedef struct FSIMasterState { + DeviceState parent; + MemoryRegion iomem; + MemoryRegion opb2fsi; + + FSIBus bus; + + uint32_t regs[FSI_MASTER_NR_REGS]; +} FSIMasterState; + + +#endif /* FSI_FSI_H */ diff --git a/hw/fsi/fsi-master.c b/hw/fsi/fsi-master.c new file mode 100644 index 0000000000..bb7a893003 --- /dev/null +++ b/hw/fsi/fsi-master.c @@ -0,0 +1,162 @@ +/* + * SPDX-License-Identifier: GPL-2.0-or-later + * Copyright (C) 2023 IBM Corp. + * + * IBM Flexible Service Interface master + */ + +#include "qemu/osdep.h" +#include "qapi/error.h" +#include "qemu/log.h" +#include "trace.h" + +#include "hw/fsi/fsi-master.h" + +#define TYPE_OP_BUS "opb" + +#define TO_REG(x) ((x) >> 2) + +#define FSI_MENP0 TO_REG(0x010) +#define FSI_MENP32 TO_REG(0x014) +#define FSI_MSENP0 TO_REG(0x018) +#define FSI_MLEVP0 TO_REG(0x018) +#define FSI_MSENP32 TO_REG(0x01c) +#define FSI_MLEVP32 TO_REG(0x01c) +#define FSI_MCENP0 TO_REG(0x020) +#define FSI_MREFP0 TO_REG(0x020) +#define FSI_MCENP32 TO_REG(0x024) +#define FSI_MREFP32 TO_REG(0x024) + +#define FSI_MVER TO_REG(0x074) +#define FSI_MRESP0 TO_REG(0x0d0) + +#define FSI_MRESB0 TO_REG(0x1d0) +#define FSI_MRESB0_RESET_GENERAL BE_BIT(0) +#define FSI_MRESB0_RESET_ERROR BE_BIT(1) + +static uint64_t fsi_master_read(void *opaque, hwaddr addr, unsigned size) +{ + FSIMasterState *s =3D FSI_MASTER(opaque); + + trace_fsi_master_read(addr, size); + + if (addr + size > sizeof(s->regs)) { + qemu_log_mask(LOG_GUEST_ERROR, + "%s: Out of bounds read: 0x%"HWADDR_PRIx" for %u\n", + __func__, addr, size); + return 0; + } + + return s->regs[TO_REG(addr)]; +} + +static void fsi_master_write(void *opaque, hwaddr addr, uint64_t data, + unsigned size) +{ + FSIMasterState *s =3D FSI_MASTER(opaque); + + trace_fsi_master_write(addr, size, data); + + if (addr + size > sizeof(s->regs)) { + qemu_log_mask(LOG_GUEST_ERROR, + "%s: Out of bounds write: %"HWADDR_PRIx" for %u\n", + __func__, addr, size); + return; + } + + switch (TO_REG(addr)) { + case FSI_MENP0: + s->regs[FSI_MENP0] =3D data; + break; + case FSI_MENP32: + s->regs[FSI_MENP32] =3D data; + break; + case FSI_MSENP0: + s->regs[FSI_MENP0] |=3D data; + break; + case FSI_MSENP32: + s->regs[FSI_MENP32] |=3D data; + break; + case FSI_MCENP0: + s->regs[FSI_MENP0] &=3D ~data; + break; + case FSI_MCENP32: + s->regs[FSI_MENP32] &=3D ~data; + break; + case FSI_MRESP0: + /* Perform necessary resets leave register 0 to indicate no errors= */ + break; + case FSI_MRESB0: + if (data & FSI_MRESB0_RESET_GENERAL) { + device_cold_reset(DEVICE(opaque)); + } + if (data & FSI_MRESB0_RESET_ERROR) { + /* FIXME: this seems dubious */ + device_cold_reset(DEVICE(opaque)); + } + break; + default: + s->regs[TO_REG(addr)] =3D data; + } +} + +static const struct MemoryRegionOps fsi_master_ops =3D { + .read =3D fsi_master_read, + .write =3D fsi_master_write, + .endianness =3D DEVICE_BIG_ENDIAN, +}; + +static void fsi_master_realize(DeviceState *dev, Error **errp) +{ + FSIMasterState *s =3D FSI_MASTER(dev); + + qbus_init(&s->bus, sizeof(s->bus), TYPE_FSI_BUS, DEVICE(s), NULL); + + memory_region_init_io(&s->iomem, OBJECT(s), &fsi_master_ops, s, + TYPE_FSI_MASTER, 0x10000000); + memory_region_init(&s->opb2fsi, OBJECT(s), "fsi.opb2fsi", 0x10000000); + + if (!object_property_set_bool(OBJECT(&s->bus), "realized", true, errp)= ) { + return; + } + + memory_region_add_subregion(&s->opb2fsi, 0, &s->bus.slave.mr); + + /* Let's add first CFAM */ + object_initialize_child(OBJECT(BUS(&s->bus)), TYPE_FSI_CFAM, &s->bus.s= lave, + TYPE_FSI_CFAM); + qdev_set_parent_bus(DEVICE(&s->bus.slave), BUS(&s->bus), &error_abort); + object_property_set_bool(OBJECT(&s->bus.slave), "realized", true, errp= ); +} + +static void fsi_master_reset(DeviceState *dev) +{ + FSIMasterState *s =3D FSI_MASTER(dev); + + /* ASPEED default */ + s->regs[FSI_MVER] =3D 0xe0050101; +} + +static void fsi_master_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc =3D DEVICE_CLASS(klass); + + dc->bus_type =3D TYPE_OP_BUS; + dc->desc =3D "FSI Master"; + dc->realize =3D fsi_master_realize; + dc->reset =3D fsi_master_reset; +} + +static const TypeInfo fsi_master_info =3D { + .name =3D TYPE_FSI_MASTER, + .parent =3D TYPE_DEVICE, + .instance_size =3D sizeof(FSIMasterState), + .class_init =3D fsi_master_class_init, +}; + +static void fsi_register_types(void) +{ + type_register_static(&fsi_master_info); +} + +type_init(fsi_register_types); diff --git a/hw/fsi/fsi.c b/hw/fsi/fsi.c new file mode 100644 index 0000000000..180283746e --- /dev/null +++ b/hw/fsi/fsi.c @@ -0,0 +1,25 @@ +/* + * SPDX-License-Identifier: GPL-2.0-or-later + * Copyright (C) 2023 IBM Corp. + * + * IBM Flexible Service Interface + */ +#include "qemu/osdep.h" + +#include "qapi/error.h" + +#include "hw/fsi/fsi.h" +#include "hw/fsi/cfam.h" + +static const TypeInfo fsi_bus_info =3D { + .name =3D TYPE_FSI_BUS, + .parent =3D TYPE_BUS, + .instance_size =3D sizeof(FSIBus), +}; + +static void fsi_bus_register_types(void) +{ + type_register_static(&fsi_bus_info); +} + +type_init(fsi_bus_register_types); diff --git a/hw/fsi/meson.build b/hw/fsi/meson.build index a9e7cd4099..f617943b4a 100644 --- a/hw/fsi/meson.build +++ b/hw/fsi/meson.build @@ -1,4 +1,4 @@ system_ss.add(when: 'CONFIG_FSI_LBUS', if_true: files('lbus.c')) system_ss.add(when: 'CONFIG_FSI_SCRATCHPAD', if_true: files('engine-scratc= hpad.c')) system_ss.add(when: 'CONFIG_FSI_CFAM', if_true: files('cfam.c')) -system_ss.add(when: 'CONFIG_FSI', if_true: files('fsi-slave.c')) +system_ss.add(when: 'CONFIG_FSI', if_true: files('fsi.c','fsi-master.c','f= si-slave.c')) diff --git a/hw/fsi/trace-events b/hw/fsi/trace-events index b57b2dcc86..89d8cd62c8 100644 --- a/hw/fsi/trace-events +++ b/hw/fsi/trace-events @@ -7,3 +7,5 @@ fsi_cfam_unimplemented_write(uint64_t addr, uint32_t size, = uint64_t data) "@0x%" fsi_cfam_config_write_noaddr(uint64_t addr, uint32_t size, uint64_t data) = "@0x%" PRIx64 " size=3D%d value=3D0x%"PRIx64 fsi_slave_read(uint64_t addr, uint32_t size) "@0x%" PRIx64 " size=3D%d" fsi_slave_write(uint64_t addr, uint32_t size, uint64_t data) "@0x%" PRIx64= " size=3D%d value=3D0x%"PRIx64 +fsi_master_read(uint64_t addr, uint32_t size) "@0x%" PRIx64 " size=3D%d" +fsi_master_write(uint64_t addr, uint32_t size, uint64_t data) "@0x%" PRIx6= 4 " size=3D%d value=3D0x%"PRIx64 --=20 2.39.2