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Fri, 26 Jan 2024 03:40:31 GMT Received: from smtpav06.dal12v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 35DF958043; Fri, 26 Jan 2024 03:40:31 +0000 (GMT) Received: from smtpav06.dal12v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id D7B0258055; Fri, 26 Jan 2024 03:40:30 +0000 (GMT) Received: from gfwa153.aus.stglabs.ibm.com (unknown [9.3.84.127]) by smtpav06.dal12v.mail.ibm.com (Postfix) with ESMTP; Fri, 26 Jan 2024 03:40:30 +0000 (GMT) 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 v11 06/11] hw/fsi: Introduce IBM's FSI master Date: Thu, 25 Jan 2024 21:40:21 -0600 Message-Id: <20240126034026.31068-7-ninad@linux.ibm.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240126034026.31068-1-ninad@linux.ibm.com> References: <20240126034026.31068-1-ninad@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-GUID: 8EMX72eNrdinin57yvSsaNeiRKsGBTMR X-Proofpoint-ORIG-GUID: T87l9kKTmF-4XqNuwlrbfVENJdxjBdOU X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.1011,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-01-25_14,2024-01-25_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 bulkscore=0 adultscore=0 mlxscore=0 mlxlogscore=794 spamscore=0 phishscore=0 priorityscore=1501 clxscore=1015 impostorscore=0 malwarescore=0 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2311290000 definitions=main-2401260024 Received-SPF: pass client-ip=148.163.156.1; envelope-from=ninad@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+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org This is a part of patchset where IBM's Flexible Service Interface is introduced. This commit models the FSI master. CFAM is hanging out of 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: Cédric Le Goater [ clg: - move FSICFAMState object under FSIMasterState - introduced fsi_master_init() - reworked fsi_master_realize() - dropped FSIBus definition ] Signed-off-by: Ninad Palsule Reviewed-by: Cédric Le Goater --- v9: - Initialized registers. - Fixed the address check. v11: - Replaced for loop with memset. - Removed Joel's review tag as per Cedric. --- include/hw/fsi/fsi-master.h | 32 +++++++ hw/fsi/fsi-master.c | 170 ++++++++++++++++++++++++++++++++++++ hw/fsi/meson.build | 2 +- hw/fsi/trace-events | 2 + 4 files changed, 205 insertions(+), 1 deletion(-) create mode 100644 include/hw/fsi/fsi-master.h create mode 100644 hw/fsi/fsi-master.c diff --git a/include/hw/fsi/fsi-master.h b/include/hw/fsi/fsi-master.h new file mode 100644 index 0000000000..68e5f56db2 --- /dev/null +++ b/include/hw/fsi/fsi-master.h @@ -0,0 +1,32 @@ +/* + * SPDX-License-Identifier: GPL-2.0-or-later + * Copyright (C) 2024 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" +#include "hw/fsi/cfam.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]; + FSICFAMState cfam; +} 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..49ad4b988f --- /dev/null +++ b/hw/fsi/fsi-master.c @@ -0,0 +1,170 @@ +/* + * SPDX-License-Identifier: GPL-2.0-or-later + * Copyright (C) 2024 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 = FSI_MASTER(opaque); + int reg = TO_REG(addr); + + trace_fsi_master_read(addr, size); + + if (reg >= FSI_MASTER_NR_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[reg]; +} + +static void fsi_master_write(void *opaque, hwaddr addr, uint64_t data, + unsigned size) +{ + FSIMasterState *s = FSI_MASTER(opaque); + int reg = TO_REG(addr); + + trace_fsi_master_write(addr, size, data); + + if (reg >= FSI_MASTER_NR_REGS) { + qemu_log_mask(LOG_GUEST_ERROR, + "%s: Out of bounds write: %"HWADDR_PRIx" for %u\n", + __func__, addr, size); + return; + } + + switch (reg) { + case FSI_MENP0: + s->regs[FSI_MENP0] = data; + break; + case FSI_MENP32: + s->regs[FSI_MENP32] = data; + break; + case FSI_MSENP0: + s->regs[FSI_MENP0] |= data; + break; + case FSI_MSENP32: + s->regs[FSI_MENP32] |= data; + break; + case FSI_MCENP0: + s->regs[FSI_MENP0] &= ~data; + break; + case FSI_MCENP32: + s->regs[FSI_MENP32] &= ~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[reg] = data; + } +} + +static const struct MemoryRegionOps fsi_master_ops = { + .read = fsi_master_read, + .write = fsi_master_write, + .endianness = DEVICE_BIG_ENDIAN, +}; + +static void fsi_master_init(Object *o) +{ + FSIMasterState *s = FSI_MASTER(o); + + object_initialize_child(o, "cfam", &s->cfam, TYPE_FSI_CFAM); + + 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); +} + +static void fsi_master_realize(DeviceState *dev, Error **errp) +{ + FSIMasterState *s = FSI_MASTER(dev); + + if (!qdev_realize(DEVICE(&s->cfam), BUS(&s->bus), errp)) { + return; + } + + /* address ? */ + memory_region_add_subregion(&s->opb2fsi, 0, &s->cfam.mr); +} + +static void fsi_master_reset(DeviceState *dev) +{ + FSIMasterState *s = FSI_MASTER(dev); + + /* Initialize registers */ + memset(s->regs, 0, sizeof(s->regs)); + + /* ASPEED default */ + s->regs[FSI_MVER] = 0xe0050101; +} + +static void fsi_master_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + + dc->bus_type = TYPE_OP_BUS; + dc->desc = "FSI Master"; + dc->realize = fsi_master_realize; + dc->reset = fsi_master_reset; +} + +static const TypeInfo fsi_master_info = { + .name = TYPE_FSI_MASTER, + .parent = TYPE_DEVICE, + .instance_init = fsi_master_init, + .instance_size = sizeof(FSIMasterState), + .class_init = 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/meson.build b/hw/fsi/meson.build index 96403d4efc..7803b3afd1 100644 --- a/hw/fsi/meson.build +++ b/hw/fsi/meson.build @@ -1 +1 @@ -system_ss.add(when: 'CONFIG_FSI', if_true: files('lbus.c','fsi.c','cfam.c')) +system_ss.add(when: 'CONFIG_FSI', if_true: files('lbus.c','fsi.c','cfam.c','fsi-master.c')) diff --git a/hw/fsi/trace-events b/hw/fsi/trace-events index b542956fb3..bf417b6dc3 100644 --- a/hw/fsi/trace-events +++ b/hw/fsi/trace-events @@ -7,3 +7,5 @@ fsi_cfam_config_write(uint64_t addr, uint32_t size, uint64_t data) "@0x%" PRIx64 fsi_cfam_unimplemented_read(uint64_t addr, uint32_t size) "@0x%" PRIx64 " size=%d" fsi_cfam_unimplemented_write(uint64_t addr, uint32_t size, uint64_t data) "@0x%" PRIx64 " size=%d value=0x%"PRIx64 fsi_cfam_config_write_noaddr(uint64_t addr, uint32_t size, uint64_t data) "@0x%" PRIx64 " size=%d value=0x%"PRIx64 +fsi_master_read(uint64_t addr, uint32_t size) "@0x%" PRIx64 " size=%d" +fsi_master_write(uint64_t addr, uint32_t size, uint64_t data) "@0x%" PRIx64 " size=%d value=0x%"PRIx64