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Wed, 30 Aug 2023 02:26:46 GMT Received: from smtpav04.wdc07v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id E567E58054; Wed, 30 Aug 2023 02:26:45 +0000 (GMT) Received: from smtpav04.wdc07v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 42FB858050; Wed, 30 Aug 2023 02:26:45 +0000 (GMT) Received: from gfwa153.aus.stglabs.ibm.com (unknown [9.3.84.127]) by smtpav04.wdc07v.mail.ibm.com (Postfix) with ESMTP; Wed, 30 Aug 2023 02:26:45 +0000 (GMT) From: Ninad Palsule To: qemu-devel@nongnu.org, clg@kaod.org, peter.maydell@linaro.org, andrew@aj.id.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 Subject: [PATCH v3 4/8] hw/fsi: Introduce IBM's FSI Date: Tue, 29 Aug 2023 21:26:34 -0500 Message-Id: <20230830022638.4183766-5-ninad@linux.ibm.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230830022638.4183766-1-ninad@linux.ibm.com> References: <20230830022638.4183766-1-ninad@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-GUID: I8eNkL5hSWVrQP4b2YPbEpf2vczjLP2c X-Proofpoint-ORIG-GUID: bsbWtwQ7EbLq-Y0bj4cG5hIft9rb-TOk X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.267,Aquarius:18.0.957,Hydra:6.0.601,FMLib:17.11.176.26 definitions=2023-08-29_16,2023-08-29_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 mlxscore=0 adultscore=0 malwarescore=0 spamscore=0 mlxlogscore=891 bulkscore=0 lowpriorityscore=0 clxscore=1015 suspectscore=0 impostorscore=0 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2308100000 definitions=main-2308300017 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+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org 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 embeded 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: Cédric Le Goater Signed-off-by: Ninad Palsule --- v2: - Incorporated review comments by Joel --- hw/fsi/cfam.c | 3 +- hw/fsi/fsi-master.c | 203 ++++++++++++++++++++++++++++++++++++ hw/fsi/fsi.c | 54 ++++++++++ hw/fsi/meson.build | 2 +- include/hw/fsi/cfam.h | 8 +- include/hw/fsi/fsi-master.h | 30 ++++++ include/hw/fsi/fsi-slave.h | 4 +- include/hw/fsi/fsi.h | 31 ++++++ 8 files changed, 327 insertions(+), 8 deletions(-) create mode 100644 hw/fsi/fsi-master.c create mode 100644 hw/fsi/fsi.c create mode 100644 include/hw/fsi/fsi-master.h create mode 100644 include/hw/fsi/fsi.h diff --git a/hw/fsi/cfam.c b/hw/fsi/cfam.c index c91fbfbbaa..bfcf365618 100644 --- a/hw/fsi/cfam.c +++ b/hw/fsi/cfam.c @@ -7,11 +7,12 @@ #include "qemu/osdep.h" +#include "qemu/bitops.h" #include "qapi/error.h" #include "qemu/log.h" -#include "hw/fsi/bits.h" #include "hw/fsi/cfam.h" +#include "hw/fsi/fsi.h" #include "hw/fsi/engine-scratchpad.h" #include "hw/qdev-properties.h" diff --git a/hw/fsi/fsi-master.c b/hw/fsi/fsi-master.c new file mode 100644 index 0000000000..fe1693539a --- /dev/null +++ b/hw/fsi/fsi-master.c @@ -0,0 +1,203 @@ +/* + * 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 "hw/fsi/bits.h" +#include "hw/fsi/fsi-master.h" + +#define TYPE_OP_BUS "opb" + +#define TO_REG(x) ((x) >> 2) + +#define FSI_MMODE TO_REG(0x000) +#define FSI_MMODE_IPOLL_DMA_EN BE_BIT(0) +#define FSI_MMODE_HW_ERROR_RECOVERY_EN BE_BIT(1) +#define FSI_MMODE_RELATIVE_ADDRESS_EN BE_BIT(2) +#define FSI_MMODE_PARITY_CHECK_EN BE_BIT(3) +#define FSI_MMODE_CLOCK_DIVIDER_0 BE_GENMASK(4, 13) +#define FSI_MMODE_CLOCK_DIVIDER_1 BE_GENMASK(14, 23) +#define FSI_MMODE_DEBUG_EN BE_BIT(24) + +#define FSI_MDELAY TO_REG(0x004) +#define FSI_MDELAY_ECHO_0 BE_GENMASK(0, 3) +#define FSI_MDELAY_SEND_0 BE_GENMASK(4, 7) +#define FSI_MDELAY_ECHO_1 BE_GENMASK(8, 11) +#define FSI_MDELAY_SEND_1 BE_GENMASK(12, 15) + +#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_MAEB TO_REG(0x070) +#define FSI_MAEB_ANY_CPU_ERROR BE_BIT(0) +#define FSI_MAEB_ANY_DMA_ERROR BE_GENMASK(1, 16) +#define FSI_MAEB_ANY_PARITY_ERROR BE_BIT(17) + +#define FSI_MVER TO_REG(0x074) +#define FSI_MVER_VERSION BE_GENMASK(0, 7) +#define FSI_MVER_BRIDGES BE_GENMASK(8, 15) +#define FSI_MVER_PORTS BE_GENMASK(16, 23) + +#define FSI_MRESP0 TO_REG(0x0d0) +#define FSI_MRESP0_RESET_PORT_GENERAL BE_BIT(0) +#define FSI_MRESP0_RESET_PORT_ERROR BE_BIT(1) +#define FSI_MRESP0_RESET_ALL_BRIDGES_GENERAL BE_BIT(2) +#define FSI_MRESP0_RESET_ALL_PORTS_GENERAL BE_BIT(3) +#define FSI_MRESP0_RESET_MASTER BE_BIT(4) +#define FSI_MRESP0_RESET_PARITY_ERROR_LATCH BE_BIT(5) + +#define FSI_MRESB0 TO_REG(0x1d0) +#define FSI_MRESB0_RESET_GENERAL BE_BIT(0) +#define FSI_MRESB0_RESET_ERROR BE_BIT(1) +#define FSI_MRESB0_SET_DMA_SUSPEND BE_BIT(5) +#define FSI_MRESB0_CLEAR_DMA_SUSPEND BE_BIT(6) +#define FSI_MRESB0_SET_DELAY_MEASURE BE_BIT(7) + +#define FSI_MECTRL TO_REG(0x2e0) +#define FSI_MECTRL_TEST_PULSE BE_GENMASK(0, 7) +#define FSI_MECTRL_INHIBIT_PARITY_ERROR BE_GENMASK(8, 15) +#define FSI_MECTRL_ENABLE_OPB_ERR_ACK BE_BIT(16) +#define FSI_MECTRL_AUTO_TERMINATE BE_BIT(17) +#define FSI_MECTRL_PORT_ERROR_FREEZE BE_BIT(18) + +static uint64_t fsi_master_read(void *opaque, hwaddr addr, unsigned size) +{ + FSIMasterState *s = FSI_MASTER(opaque); + + qemu_log_mask(LOG_UNIMP, "%s: read @0x%" HWADDR_PRIx " size=%d\n", + __func__, 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 = FSI_MASTER(opaque); + + qemu_log_mask(LOG_UNIMP, "%s: write @0x%" HWADDR_PRIx " size=%d " + "value=%"PRIx64"\n", __func__, 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] = 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[TO_REG(addr)] = data; + } +} + +static const struct MemoryRegionOps fsi_master_ops = { + .read = fsi_master_read, + .write = fsi_master_write, + .endianness = DEVICE_BIG_ENDIAN, +}; + +static void fsi_master_realize(DeviceState *dev, Error **errp) +{ + FSIMasterState *s = FSI_MASTER(dev); + Error *err = NULL; + + 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); + + object_property_set_bool(OBJECT(&s->bus), "realized", true, &err); + if (err) { + error_propagate(errp, err); + return; + } + + memory_region_add_subregion(&s->opb2fsi, 0, &s->bus.slave.mr); +} + +static void fsi_master_reset(DeviceState *dev) +{ + FSIMasterState *s = FSI_MASTER(dev); + + /* 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_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/fsi.c b/hw/fsi/fsi.c new file mode 100644 index 0000000000..43f889fee9 --- /dev/null +++ b/hw/fsi/fsi.c @@ -0,0 +1,54 @@ +/* + * 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 void fsi_bus_realize(BusState *bus, Error **errp) +{ + FSIBus *s = FSI_BUS(bus); + Error *err = NULL; + + /* FIXME: Should be realised elsewhere and added to the bus */ + object_property_set_bool(OBJECT(&s->slave), "realized", true, &err); + if (err) { + error_propagate(errp, err); + } +} + +static void fsi_bus_init(Object *o) +{ + FSIBus *s = FSI_BUS(o); + + /* FIXME: Move this elsewhere */ + object_initialize_child(o, TYPE_CFAM, &s->slave, TYPE_CFAM); + qdev_set_parent_bus(DEVICE(&s->slave), BUS(o), &error_abort); +} + +static void fsi_bus_class_init(ObjectClass *klass, void *data) +{ + BusClass *bc = BUS_CLASS(klass); + bc->realize = fsi_bus_realize; +} + +static const TypeInfo fsi_bus_info = { + .name = TYPE_FSI_BUS, + .parent = TYPE_BUS, + .instance_init = fsi_bus_init, + .instance_size = sizeof(FSIBus), + .class_init = fsi_bus_class_init, +}; + +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 5600502b33..ca80d11cb9 100644 --- a/hw/fsi/meson.build +++ b/hw/fsi/meson.build @@ -1,4 +1,4 @@ system_ss.add(when: 'CONFIG_LBUS', if_true: files('lbus.c')) system_ss.add(when: 'CONFIG_SCRATCHPAD', if_true: files('engine-scratchpad.c')) system_ss.add(when: 'CONFIG_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','fsi-slave.c')) diff --git a/include/hw/fsi/cfam.h b/include/hw/fsi/cfam.h index af9f88cb22..49877a7220 100644 --- a/include/hw/fsi/cfam.h +++ b/include/hw/fsi/cfam.h @@ -12,14 +12,14 @@ #include "hw/fsi/fsi-slave.h" #include "hw/fsi/lbus.h" -#define TYPE_FSI_BUS "fsi.bus" - #define TYPE_CFAM "cfam" #define CFAM(obj) OBJECT_CHECK(CFAMState, (obj), TYPE_CFAM) #define CFAM_NR_REGS ((0x2e0 >> 2) + 1) #define TYPE_CFAM_CONFIG "cfam.config" +OBJECT_DECLARE_SIMPLE_TYPE(CFAMConfig, CFAM_CONFIG) + #define CFAM_CONFIG(obj) \ OBJECT_CHECK(CFAMConfig, (obj), TYPE_CFAM_CONFIG) /* P9-ism */ @@ -35,8 +35,8 @@ typedef struct CFAMConfig { } CFAMConfig; #define TYPE_CFAM_PEEK "cfam.peek" -#define CFAM_PEEK(obj) \ - OBJECT_CHECK(CFAMPeek, (obj), TYPE_CFAM_PEEK) +OBJECT_DECLARE_SIMPLE_TYPE(CFAMPeek, CFAM_PEEK) + #define CFAM_PEEK_NR_REGS ((0x130 >> 2) + 1) typedef struct CFAMPeek { 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/include/hw/fsi/fsi-slave.h b/include/hw/fsi/fsi-slave.h index bff807ff20..f5f23f4457 100644 --- a/include/hw/fsi/fsi-slave.h +++ b/include/hw/fsi/fsi-slave.h @@ -15,8 +15,8 @@ #include #define TYPE_FSI_SLAVE "fsi.slave" -#define FSI_SLAVE(obj) \ - OBJECT_CHECK(FSISlaveState, (obj), TYPE_FSI_SLAVE) +OBJECT_DECLARE_SIMPLE_TYPE(FSISlaveState, FSI_SLAVE) + #define FSI_SLAVE_CONTROL_NR_REGS ((0x40 >> 2) + 1) typedef struct FSISlaveState { diff --git a/include/hw/fsi/fsi.h b/include/hw/fsi/fsi.h new file mode 100644 index 0000000000..9c8dbe884f --- /dev/null +++ b/include/hw/fsi/fsi.h @@ -0,0 +1,31 @@ +/* + * SPDX-License-Identifier: GPL-2.0-or-later + * Copyright (C) 2023 IBM Corp. + * + * IBM Flexible Service Interface + */ +#ifndef FSI_FSI_H +#define FSI_FSI_H + +#include "hw/qdev-core.h" + +/* + * TODO: Maybe unwind this dependency with const links? Store a + * pointer in FSIBus? + */ +#include "hw/fsi/cfam.h" + +#define TYPE_FSI_BUS "fsi.bus" +OBJECT_DECLARE_SIMPLE_TYPE(FSIBus, FSI_BUS) + +/* TODO: Figure out what's best with a point-to-point bus */ +typedef struct FSISlaveState FSISlaveState; + +typedef struct FSIBus { + BusState bus; + + /* XXX: It's point-to-point, just instantiate the slave directly for now */ + CFAMState slave; +} FSIBus; + +#endif