| Message ID | 20240126034026.31068-7-ninad@linux.ibm.com |
|---|---|
| State | New |
| Headers | show |
| Series | Introduce model for IBM's FSI | expand |
On 1/26/24 04:40, Ninad Palsule wrote: > 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 <andrew@aj.id.au> > Signed-off-by: Cédric Le Goater <clg@kaod.org> > [ clg: - move FSICFAMState object under FSIMasterState > - introduced fsi_master_init() > - reworked fsi_master_realize() > - dropped FSIBus definition ] > Signed-off-by: Ninad Palsule <ninad@linux.ibm.com> > --- > v9: > - Initialized registers. > - Fixed the address check. > v11: > - Replaced for loop with memset. > - Removed Joel's review tag as per Cedric. Reviewed-by: Cédric Le Goater <clg@kaod.org> Thanks, C. > --- > 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
Hello Cedric, >> v9: >> - Initialized registers. >> - Fixed the address check. >> v11: >> - Replaced for loop with memset. >> - Removed Joel's review tag as per Cedric. > > > Reviewed-by: Cédric Le Goater <clg@kaod.org> Added tag. Thanks for the review. Regards, Ninad
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