diff options
Diffstat (limited to 'hw/pci-bridge')
| -rw-r--r-- | hw/pci-bridge/Kconfig | 34 | ||||
| -rw-r--r-- | hw/pci-bridge/cxl_downstream.c | 249 | ||||
| -rw-r--r-- | hw/pci-bridge/cxl_root_port.c | 236 | ||||
| -rw-r--r-- | hw/pci-bridge/cxl_upstream.c | 409 | ||||
| -rw-r--r-- | hw/pci-bridge/dec.c | 164 | ||||
| -rw-r--r-- | hw/pci-bridge/dec.h | 9 | ||||
| -rw-r--r-- | hw/pci-bridge/gen_pcie_root_port.c | 178 | ||||
| -rw-r--r-- | hw/pci-bridge/i82801b11.c | 122 | ||||
| -rw-r--r-- | hw/pci-bridge/ioh3420.c | 130 | ||||
| -rw-r--r-- | hw/pci-bridge/meson.build | 18 | ||||
| -rw-r--r-- | hw/pci-bridge/pci_bridge_dev.c | 308 | ||||
| -rw-r--r-- | hw/pci-bridge/pci_expander_bridge.c | 533 | ||||
| -rw-r--r-- | hw/pci-bridge/pci_expander_bridge_stubs.c | 14 | ||||
| -rw-r--r-- | hw/pci-bridge/pcie_pci_bridge.c | 180 | ||||
| -rw-r--r-- | hw/pci-bridge/pcie_root_port.c | 202 | ||||
| -rw-r--r-- | hw/pci-bridge/simba.c | 102 | ||||
| -rw-r--r-- | hw/pci-bridge/xio3130_downstream.c | 191 | ||||
| -rw-r--r-- | hw/pci-bridge/xio3130_upstream.c | 159 |
18 files changed, 3238 insertions, 0 deletions
diff --git a/hw/pci-bridge/Kconfig b/hw/pci-bridge/Kconfig new file mode 100644 index 00000000..02614f49 --- /dev/null +++ b/hw/pci-bridge/Kconfig @@ -0,0 +1,34 @@ +config PCIE_PORT + bool + default y if PCI_DEVICES + depends on PCI_EXPRESS && MSI_NONBROKEN + +config PXB + bool + default y if Q35 || ARM_VIRT + +config XIO3130 + bool + default y if PCI_DEVICES + depends on PCI_EXPRESS && MSI_NONBROKEN + +config IOH3420 + bool + default y if PCI_DEVICES + depends on PCI_EXPRESS && MSI_NONBROKEN + +config I82801B11 + bool + default y if PCI_DEVICES + depends on PCI_EXPRESS + +config DEC_PCI + bool + +config SIMBA + bool + +config CXL + bool + default y if PCI_EXPRESS && PXB + depends on PCI_EXPRESS && MSI_NONBROKEN && PXB diff --git a/hw/pci-bridge/cxl_downstream.c b/hw/pci-bridge/cxl_downstream.c new file mode 100644 index 00000000..a361e519 --- /dev/null +++ b/hw/pci-bridge/cxl_downstream.c @@ -0,0 +1,249 @@ +/* + * Emulated CXL Switch Downstream Port + * + * Copyright (c) 2022 Huawei Technologies. + * + * Based on xio3130_downstream.c + * + * SPDX-License-Identifier: GPL-2.0-or-later + */ + +#include "qemu/osdep.h" +#include "qemu/log.h" +#include "hw/pci/msi.h" +#include "hw/pci/pcie.h" +#include "hw/pci/pcie_port.h" +#include "qapi/error.h" + +typedef struct CXLDownStreamPort { + /*< private >*/ + PCIESlot parent_obj; + + /*< public >*/ + CXLComponentState cxl_cstate; +} CXLDownstreamPort; + +#define TYPE_CXL_DSP "cxl-downstream" +DECLARE_INSTANCE_CHECKER(CXLDownstreamPort, CXL_DSP, TYPE_CXL_DSP) + +#define CXL_DOWNSTREAM_PORT_MSI_OFFSET 0x70 +#define CXL_DOWNSTREAM_PORT_MSI_NR_VECTOR 1 +#define CXL_DOWNSTREAM_PORT_EXP_OFFSET 0x90 +#define CXL_DOWNSTREAM_PORT_AER_OFFSET 0x100 +#define CXL_DOWNSTREAM_PORT_DVSEC_OFFSET \ + (CXL_DOWNSTREAM_PORT_AER_OFFSET + PCI_ERR_SIZEOF) + +static void latch_registers(CXLDownstreamPort *dsp) +{ + uint32_t *reg_state = dsp->cxl_cstate.crb.cache_mem_registers; + uint32_t *write_msk = dsp->cxl_cstate.crb.cache_mem_regs_write_mask; + + cxl_component_register_init_common(reg_state, write_msk, + CXL2_DOWNSTREAM_PORT); +} + +/* TODO: Look at sharing this code acorss all CXL port types */ +static void cxl_dsp_dvsec_write_config(PCIDevice *dev, uint32_t addr, + uint32_t val, int len) +{ + CXLDownstreamPort *dsp = CXL_DSP(dev); + CXLComponentState *cxl_cstate = &dsp->cxl_cstate; + + if (range_contains(&cxl_cstate->dvsecs[EXTENSIONS_PORT_DVSEC], addr)) { + uint8_t *reg = &dev->config[addr]; + addr -= cxl_cstate->dvsecs[EXTENSIONS_PORT_DVSEC].lob; + if (addr == PORT_CONTROL_OFFSET) { + if (pci_get_word(reg) & PORT_CONTROL_UNMASK_SBR) { + /* unmask SBR */ + qemu_log_mask(LOG_UNIMP, "SBR mask control is not supported\n"); + } + if (pci_get_word(reg) & PORT_CONTROL_ALT_MEMID_EN) { + /* Alt Memory & ID Space Enable */ + qemu_log_mask(LOG_UNIMP, + "Alt Memory & ID space is not supported\n"); + + } + } + } +} + +static void cxl_dsp_config_write(PCIDevice *d, uint32_t address, + uint32_t val, int len) +{ + uint16_t slt_ctl, slt_sta; + + pcie_cap_slot_get(d, &slt_ctl, &slt_sta); + pci_bridge_write_config(d, address, val, len); + pcie_cap_flr_write_config(d, address, val, len); + pcie_cap_slot_write_config(d, slt_ctl, slt_sta, address, val, len); + pcie_aer_write_config(d, address, val, len); + + cxl_dsp_dvsec_write_config(d, address, val, len); +} + +static void cxl_dsp_reset(DeviceState *qdev) +{ + PCIDevice *d = PCI_DEVICE(qdev); + CXLDownstreamPort *dsp = CXL_DSP(qdev); + + pcie_cap_deverr_reset(d); + pcie_cap_slot_reset(d); + pcie_cap_arifwd_reset(d); + pci_bridge_reset(qdev); + + latch_registers(dsp); +} + +static void build_dvsecs(CXLComponentState *cxl) +{ + uint8_t *dvsec; + + dvsec = (uint8_t *)&(CXLDVSECPortExtensions){ 0 }; + cxl_component_create_dvsec(cxl, CXL2_DOWNSTREAM_PORT, + EXTENSIONS_PORT_DVSEC_LENGTH, + EXTENSIONS_PORT_DVSEC, + EXTENSIONS_PORT_DVSEC_REVID, dvsec); + + dvsec = (uint8_t *)&(CXLDVSECPortFlexBus){ + .cap = 0x27, /* Cache, IO, Mem, non-MLD */ + .ctrl = 0x02, /* IO always enabled */ + .status = 0x26, /* same */ + .rcvd_mod_ts_data_phase1 = 0xef, /* WTF? */ + }; + cxl_component_create_dvsec(cxl, CXL2_DOWNSTREAM_PORT, + PCIE_FLEXBUS_PORT_DVSEC_LENGTH_2_0, + PCIE_FLEXBUS_PORT_DVSEC, + PCIE_FLEXBUS_PORT_DVSEC_REVID_2_0, dvsec); + + dvsec = (uint8_t *)&(CXLDVSECPortGPF){ + .rsvd = 0, + .phase1_ctrl = 1, /* 1μs timeout */ + .phase2_ctrl = 1, /* 1μs timeout */ + }; + cxl_component_create_dvsec(cxl, CXL2_DOWNSTREAM_PORT, + GPF_PORT_DVSEC_LENGTH, GPF_PORT_DVSEC, + GPF_PORT_DVSEC_REVID, dvsec); + + dvsec = (uint8_t *)&(CXLDVSECRegisterLocator){ + .rsvd = 0, + .reg0_base_lo = RBI_COMPONENT_REG | CXL_COMPONENT_REG_BAR_IDX, + .reg0_base_hi = 0, + }; + cxl_component_create_dvsec(cxl, CXL2_DOWNSTREAM_PORT, + REG_LOC_DVSEC_LENGTH, REG_LOC_DVSEC, + REG_LOC_DVSEC_REVID, dvsec); +} + +static void cxl_dsp_realize(PCIDevice *d, Error **errp) +{ + PCIEPort *p = PCIE_PORT(d); + PCIESlot *s = PCIE_SLOT(d); + CXLDownstreamPort *dsp = CXL_DSP(d); + CXLComponentState *cxl_cstate = &dsp->cxl_cstate; + ComponentRegisters *cregs = &cxl_cstate->crb; + MemoryRegion *component_bar = &cregs->component_registers; + int rc; + + pci_bridge_initfn(d, TYPE_PCIE_BUS); + pcie_port_init_reg(d); + + rc = msi_init(d, CXL_DOWNSTREAM_PORT_MSI_OFFSET, + CXL_DOWNSTREAM_PORT_MSI_NR_VECTOR, + true, true, errp); + if (rc) { + assert(rc == -ENOTSUP); + goto err_bridge; + } + + rc = pcie_cap_init(d, CXL_DOWNSTREAM_PORT_EXP_OFFSET, + PCI_EXP_TYPE_DOWNSTREAM, p->port, + errp); + if (rc < 0) { + goto err_msi; + } + + pcie_cap_flr_init(d); + pcie_cap_deverr_init(d); + pcie_cap_slot_init(d, s); + pcie_cap_arifwd_init(d); + + pcie_chassis_create(s->chassis); + rc = pcie_chassis_add_slot(s); + if (rc < 0) { + error_setg(errp, "Can't add chassis slot, error %d", rc); + goto err_pcie_cap; + } + + rc = pcie_aer_init(d, PCI_ERR_VER, CXL_DOWNSTREAM_PORT_AER_OFFSET, + PCI_ERR_SIZEOF, errp); + if (rc < 0) { + goto err_chassis; + } + + cxl_cstate->dvsec_offset = CXL_DOWNSTREAM_PORT_DVSEC_OFFSET; + cxl_cstate->pdev = d; + build_dvsecs(cxl_cstate); + cxl_component_register_block_init(OBJECT(d), cxl_cstate, TYPE_CXL_DSP); + pci_register_bar(d, CXL_COMPONENT_REG_BAR_IDX, + PCI_BASE_ADDRESS_SPACE_MEMORY | + PCI_BASE_ADDRESS_MEM_TYPE_64, + component_bar); + + return; + + err_chassis: + pcie_chassis_del_slot(s); + err_pcie_cap: + pcie_cap_exit(d); + err_msi: + msi_uninit(d); + err_bridge: + pci_bridge_exitfn(d); +} + +static void cxl_dsp_exitfn(PCIDevice *d) +{ + PCIESlot *s = PCIE_SLOT(d); + + pcie_aer_exit(d); + pcie_chassis_del_slot(s); + pcie_cap_exit(d); + msi_uninit(d); + pci_bridge_exitfn(d); +} + +static void cxl_dsp_class_init(ObjectClass *oc, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(oc); + PCIDeviceClass *k = PCI_DEVICE_CLASS(oc); + + k->is_bridge = true; + k->config_write = cxl_dsp_config_write; + k->realize = cxl_dsp_realize; + k->exit = cxl_dsp_exitfn; + k->vendor_id = 0x19e5; /* Huawei */ + k->device_id = 0xa129; /* Emulated CXL Switch Downstream Port */ + k->revision = 0; + set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories); + dc->desc = "CXL Switch Downstream Port"; + dc->reset = cxl_dsp_reset; +} + +static const TypeInfo cxl_dsp_info = { + .name = TYPE_CXL_DSP, + .instance_size = sizeof(CXLDownstreamPort), + .parent = TYPE_PCIE_SLOT, + .class_init = cxl_dsp_class_init, + .interfaces = (InterfaceInfo[]) { + { INTERFACE_PCIE_DEVICE }, + { INTERFACE_CXL_DEVICE }, + { } + }, +}; + +static void cxl_dsp_register_type(void) +{ + type_register_static(&cxl_dsp_info); +} + +type_init(cxl_dsp_register_type); diff --git a/hw/pci-bridge/cxl_root_port.c b/hw/pci-bridge/cxl_root_port.c new file mode 100644 index 00000000..fb213fa0 --- /dev/null +++ b/hw/pci-bridge/cxl_root_port.c @@ -0,0 +1,236 @@ +/* + * CXL 2.0 Root Port Implementation + * + * Copyright(C) 2020 Intel Corporation. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, see <http://www.gnu.org/licenses/> + */ + +#include "qemu/osdep.h" +#include "qemu/log.h" +#include "qemu/range.h" +#include "hw/pci/pci_bridge.h" +#include "hw/pci/pcie_port.h" +#include "hw/qdev-properties.h" +#include "hw/sysbus.h" +#include "qapi/error.h" +#include "hw/cxl/cxl.h" + +#define CXL_ROOT_PORT_DID 0x7075 + +/* Copied from the gen root port which we derive */ +#define GEN_PCIE_ROOT_PORT_AER_OFFSET 0x100 +#define GEN_PCIE_ROOT_PORT_ACS_OFFSET \ + (GEN_PCIE_ROOT_PORT_AER_OFFSET + PCI_ERR_SIZEOF) +#define CXL_ROOT_PORT_DVSEC_OFFSET \ + (GEN_PCIE_ROOT_PORT_ACS_OFFSET + PCI_ACS_SIZEOF) + +typedef struct CXLRootPort { + /*< private >*/ + PCIESlot parent_obj; + + CXLComponentState cxl_cstate; + PCIResReserve res_reserve; +} CXLRootPort; + +#define TYPE_CXL_ROOT_PORT "cxl-rp" +DECLARE_INSTANCE_CHECKER(CXLRootPort, CXL_ROOT_PORT, TYPE_CXL_ROOT_PORT) + +static void latch_registers(CXLRootPort *crp) +{ + uint32_t *reg_state = crp->cxl_cstate.crb.cache_mem_registers; + uint32_t *write_msk = crp->cxl_cstate.crb.cache_mem_regs_write_mask; + + cxl_component_register_init_common(reg_state, write_msk, CXL2_ROOT_PORT); +} + +static void build_dvsecs(CXLComponentState *cxl) +{ + uint8_t *dvsec; + + dvsec = (uint8_t *)&(CXLDVSECPortExtensions){ 0 }; + cxl_component_create_dvsec(cxl, CXL2_ROOT_PORT, + EXTENSIONS_PORT_DVSEC_LENGTH, + EXTENSIONS_PORT_DVSEC, + EXTENSIONS_PORT_DVSEC_REVID, dvsec); + + dvsec = (uint8_t *)&(CXLDVSECPortGPF){ + .rsvd = 0, + .phase1_ctrl = 1, /* 1μs timeout */ + .phase2_ctrl = 1, /* 1μs timeout */ + }; + cxl_component_create_dvsec(cxl, CXL2_ROOT_PORT, + GPF_PORT_DVSEC_LENGTH, GPF_PORT_DVSEC, + GPF_PORT_DVSEC_REVID, dvsec); + + dvsec = (uint8_t *)&(CXLDVSECPortFlexBus){ + .cap = 0x26, /* IO, Mem, non-MLD */ + .ctrl = 0x2, + .status = 0x26, /* same */ + .rcvd_mod_ts_data_phase1 = 0xef, + }; + cxl_component_create_dvsec(cxl, CXL2_ROOT_PORT, + PCIE_FLEXBUS_PORT_DVSEC_LENGTH_2_0, + PCIE_FLEXBUS_PORT_DVSEC, + PCIE_FLEXBUS_PORT_DVSEC_REVID_2_0, dvsec); + + dvsec = (uint8_t *)&(CXLDVSECRegisterLocator){ + .rsvd = 0, + .reg0_base_lo = RBI_COMPONENT_REG | CXL_COMPONENT_REG_BAR_IDX, + .reg0_base_hi = 0, + }; + cxl_component_create_dvsec(cxl, CXL2_ROOT_PORT, + REG_LOC_DVSEC_LENGTH, REG_LOC_DVSEC, + REG_LOC_DVSEC_REVID, dvsec); +} + +static void cxl_rp_realize(DeviceState *dev, Error **errp) +{ + PCIDevice *pci_dev = PCI_DEVICE(dev); + PCIERootPortClass *rpc = PCIE_ROOT_PORT_GET_CLASS(dev); + CXLRootPort *crp = CXL_ROOT_PORT(dev); + CXLComponentState *cxl_cstate = &crp->cxl_cstate; + ComponentRegisters *cregs = &cxl_cstate->crb; + MemoryRegion *component_bar = &cregs->component_registers; + Error *local_err = NULL; + + rpc->parent_realize(dev, &local_err); + if (local_err) { + error_propagate(errp, local_err); + return; + } + + int rc = + pci_bridge_qemu_reserve_cap_init(pci_dev, 0, crp->res_reserve, errp); + if (rc < 0) { + rpc->parent_class.exit(pci_dev); + return; + } + + if (!crp->res_reserve.io || crp->res_reserve.io == -1) { + pci_word_test_and_clear_mask(pci_dev->wmask + PCI_COMMAND, + PCI_COMMAND_IO); + pci_dev->wmask[PCI_IO_BASE] = 0; + pci_dev->wmask[PCI_IO_LIMIT] = 0; + } + + cxl_cstate->dvsec_offset = CXL_ROOT_PORT_DVSEC_OFFSET; + cxl_cstate->pdev = pci_dev; + build_dvsecs(&crp->cxl_cstate); + + cxl_component_register_block_init(OBJECT(pci_dev), cxl_cstate, + TYPE_CXL_ROOT_PORT); + + pci_register_bar(pci_dev, CXL_COMPONENT_REG_BAR_IDX, + PCI_BASE_ADDRESS_SPACE_MEMORY | + PCI_BASE_ADDRESS_MEM_TYPE_64, + component_bar); +} + +static void cxl_rp_reset(DeviceState *dev) +{ + PCIERootPortClass *rpc = PCIE_ROOT_PORT_GET_CLASS(dev); + CXLRootPort *crp = CXL_ROOT_PORT(dev); + + rpc->parent_reset(dev); + + latch_registers(crp); +} + +static Property gen_rp_props[] = { + DEFINE_PROP_UINT32("bus-reserve", CXLRootPort, res_reserve.bus, -1), + DEFINE_PROP_SIZE("io-reserve", CXLRootPort, res_reserve.io, -1), + DEFINE_PROP_SIZE("mem-reserve", CXLRootPort, res_reserve.mem_non_pref, -1), + DEFINE_PROP_SIZE("pref32-reserve", CXLRootPort, res_reserve.mem_pref_32, + -1), + DEFINE_PROP_SIZE("pref64-reserve", CXLRootPort, res_reserve.mem_pref_64, + -1), + DEFINE_PROP_END_OF_LIST() +}; + +static void cxl_rp_dvsec_write_config(PCIDevice *dev, uint32_t addr, + uint32_t val, int len) +{ + CXLRootPort *crp = CXL_ROOT_PORT(dev); + + if (range_contains(&crp->cxl_cstate.dvsecs[EXTENSIONS_PORT_DVSEC], addr)) { + uint8_t *reg = &dev->config[addr]; + addr -= crp->cxl_cstate.dvsecs[EXTENSIONS_PORT_DVSEC].lob; + if (addr == PORT_CONTROL_OFFSET) { + if (pci_get_word(reg) & PORT_CONTROL_UNMASK_SBR) { + /* unmask SBR */ + qemu_log_mask(LOG_UNIMP, "SBR mask control is not supported\n"); + } + if (pci_get_word(reg) & PORT_CONTROL_ALT_MEMID_EN) { + /* Alt Memory & ID Space Enable */ + qemu_log_mask(LOG_UNIMP, + "Alt Memory & ID space is not supported\n"); + } + } + } +} + +static void cxl_rp_write_config(PCIDevice *d, uint32_t address, uint32_t val, + int len) +{ + uint16_t slt_ctl, slt_sta; + + pcie_cap_slot_get(d, &slt_ctl, &slt_sta); + pci_bridge_write_config(d, address, val, len); + pcie_cap_flr_write_config(d, address, val, len); + pcie_cap_slot_write_config(d, slt_ctl, slt_sta, address, val, len); + pcie_aer_write_config(d, address, val, len); + + cxl_rp_dvsec_write_config(d, address, val, len); +} + +static void cxl_root_port_class_init(ObjectClass *oc, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(oc); + PCIDeviceClass *k = PCI_DEVICE_CLASS(oc); + PCIERootPortClass *rpc = PCIE_ROOT_PORT_CLASS(oc); + + k->vendor_id = PCI_VENDOR_ID_INTEL; + k->device_id = CXL_ROOT_PORT_DID; + dc->desc = "CXL Root Port"; + k->revision = 0; + device_class_set_props(dc, gen_rp_props); + k->config_write = cxl_rp_write_config; + + device_class_set_parent_realize(dc, cxl_rp_realize, &rpc->parent_realize); + device_class_set_parent_reset(dc, cxl_rp_reset, &rpc->parent_reset); + + rpc->aer_offset = GEN_PCIE_ROOT_PORT_AER_OFFSET; + rpc->acs_offset = GEN_PCIE_ROOT_PORT_ACS_OFFSET; + + dc->hotpluggable = false; +} + +static const TypeInfo cxl_root_port_info = { + .name = TYPE_CXL_ROOT_PORT, + .parent = TYPE_PCIE_ROOT_PORT, + .instance_size = sizeof(CXLRootPort), + .class_init = cxl_root_port_class_init, + .interfaces = (InterfaceInfo[]) { + { INTERFACE_CXL_DEVICE }, + { } + }, +}; + +static void cxl_register(void) +{ + type_register_static(&cxl_root_port_info); +} + +type_init(cxl_register); diff --git a/hw/pci-bridge/cxl_upstream.c b/hw/pci-bridge/cxl_upstream.c new file mode 100644 index 00000000..9b8b57df --- /dev/null +++ b/hw/pci-bridge/cxl_upstream.c @@ -0,0 +1,409 @@ +/* + * Emulated CXL Switch Upstream Port + * + * Copyright (c) 2022 Huawei Technologies. + * + * Based on xio3130_upstream.c + * + * SPDX-License-Identifier: GPL-2.0-or-later + */ + +#include "qemu/osdep.h" +#include "qemu/log.h" +#include "hw/qdev-properties.h" +#include "hw/pci/msi.h" +#include "hw/pci/pcie.h" +#include "hw/pci/pcie_port.h" + +#define CXL_UPSTREAM_PORT_MSI_NR_VECTOR 2 + +#define CXL_UPSTREAM_PORT_MSI_OFFSET 0x70 +#define CXL_UPSTREAM_PORT_PCIE_CAP_OFFSET 0x90 +#define CXL_UPSTREAM_PORT_AER_OFFSET 0x100 +#define CXL_UPSTREAM_PORT_DVSEC_OFFSET \ + (CXL_UPSTREAM_PORT_AER_OFFSET + PCI_ERR_SIZEOF) + +typedef struct CXLUpstreamPort { + /*< private >*/ + PCIEPort parent_obj; + + /*< public >*/ + CXLComponentState cxl_cstate; + DOECap doe_cdat; +} CXLUpstreamPort; + +CXLComponentState *cxl_usp_to_cstate(CXLUpstreamPort *usp) +{ + return &usp->cxl_cstate; +} + +static void cxl_usp_dvsec_write_config(PCIDevice *dev, uint32_t addr, + uint32_t val, int len) +{ + CXLUpstreamPort *usp = CXL_USP(dev); + + if (range_contains(&usp->cxl_cstate.dvsecs[EXTENSIONS_PORT_DVSEC], addr)) { + uint8_t *reg = &dev->config[addr]; + addr -= usp->cxl_cstate.dvsecs[EXTENSIONS_PORT_DVSEC].lob; + if (addr == PORT_CONTROL_OFFSET) { + if (pci_get_word(reg) & PORT_CONTROL_UNMASK_SBR) { + /* unmask SBR */ + qemu_log_mask(LOG_UNIMP, "SBR mask control is not supported\n"); + } + if (pci_get_word(reg) & PORT_CONTROL_ALT_MEMID_EN) { + /* Alt Memory & ID Space Enable */ + qemu_log_mask(LOG_UNIMP, + "Alt Memory & ID space is not supported\n"); + } + } + } +} + +static void cxl_usp_write_config(PCIDevice *d, uint32_t address, + uint32_t val, int len) +{ + CXLUpstreamPort *usp = CXL_USP(d); + + pcie_doe_write_config(&usp->doe_cdat, address, val, len); + pci_bridge_write_config(d, address, val, len); + pcie_cap_flr_write_config(d, address, val, len); + pcie_aer_write_config(d, address, val, len); + + cxl_usp_dvsec_write_config(d, address, val, len); +} + +static uint32_t cxl_usp_read_config(PCIDevice *d, uint32_t address, int len) +{ + CXLUpstreamPort *usp = CXL_USP(d); + uint32_t val; + + if (pcie_doe_read_config(&usp->doe_cdat, address, len, &val)) { + return val; + } + + return pci_default_read_config(d, address, len); +} + +static void latch_registers(CXLUpstreamPort *usp) +{ + uint32_t *reg_state = usp->cxl_cstate.crb.cache_mem_registers; + uint32_t *write_msk = usp->cxl_cstate.crb.cache_mem_regs_write_mask; + + cxl_component_register_init_common(reg_state, write_msk, + CXL2_UPSTREAM_PORT); + ARRAY_FIELD_DP32(reg_state, CXL_HDM_DECODER_CAPABILITY, TARGET_COUNT, 8); +} + +static void cxl_usp_reset(DeviceState *qdev) +{ + PCIDevice *d = PCI_DEVICE(qdev); + CXLUpstreamPort *usp = CXL_USP(qdev); + + pci_bridge_reset(qdev); + pcie_cap_deverr_reset(d); + latch_registers(usp); +} + +static void build_dvsecs(CXLComponentState *cxl) +{ + uint8_t *dvsec; + + dvsec = (uint8_t *)&(CXLDVSECPortExtensions){ + .status = 0x1, /* Port Power Management Init Complete */ + }; + cxl_component_create_dvsec(cxl, CXL2_UPSTREAM_PORT, + EXTENSIONS_PORT_DVSEC_LENGTH, + EXTENSIONS_PORT_DVSEC, + EXTENSIONS_PORT_DVSEC_REVID, dvsec); + dvsec = (uint8_t *)&(CXLDVSECPortFlexBus){ + .cap = 0x27, /* Cache, IO, Mem, non-MLD */ + .ctrl = 0x27, /* Cache, IO, Mem */ + .status = 0x26, /* same */ + .rcvd_mod_ts_data_phase1 = 0xef, /* WTF? */ + }; + cxl_component_create_dvsec(cxl, CXL2_UPSTREAM_PORT, + PCIE_FLEXBUS_PORT_DVSEC_LENGTH_2_0, + PCIE_FLEXBUS_PORT_DVSEC, + PCIE_FLEXBUS_PORT_DVSEC_REVID_2_0, dvsec); + + dvsec = (uint8_t *)&(CXLDVSECRegisterLocator){ + .rsvd = 0, + .reg0_base_lo = RBI_COMPONENT_REG | CXL_COMPONENT_REG_BAR_IDX, + .reg0_base_hi = 0, + }; + cxl_component_create_dvsec(cxl, CXL2_UPSTREAM_PORT, + REG_LOC_DVSEC_LENGTH, REG_LOC_DVSEC, + REG_LOC_DVSEC_REVID, dvsec); +} + +static bool cxl_doe_cdat_rsp(DOECap *doe_cap) +{ + CDATObject *cdat = &CXL_USP(doe_cap->pdev)->cxl_cstate.cdat; + uint16_t ent; + void *base; + uint32_t len; + CDATReq *req = pcie_doe_get_write_mbox_ptr(doe_cap); + CDATRsp rsp; + + cxl_doe_cdat_update(&CXL_USP(doe_cap->pdev)->cxl_cstate, &error_fatal); + assert(cdat->entry_len); + + /* Discard if request length mismatched */ + if (pcie_doe_get_obj_len(req) < + DIV_ROUND_UP(sizeof(CDATReq), sizeof(uint32_t))) { + return false; + } + + ent = req->entry_handle; + base = cdat->entry[ent].base; + len = cdat->entry[ent].length; + + rsp = (CDATRsp) { + .header = { + .vendor_id = CXL_VENDOR_ID, + .data_obj_type = CXL_DOE_TABLE_ACCESS, + .reserved = 0x0, + .length = DIV_ROUND_UP((sizeof(rsp) + len), sizeof(uint32_t)), + }, + .rsp_code = CXL_DOE_TAB_RSP, + .table_type = CXL_DOE_TAB_TYPE_CDAT, + .entry_handle = (ent < cdat->entry_len - 1) ? + ent + 1 : CXL_DOE_TAB_ENT_MAX, + }; + + memcpy(doe_cap->read_mbox, &rsp, sizeof(rsp)); + memcpy(doe_cap->read_mbox + DIV_ROUND_UP(sizeof(rsp), sizeof(uint32_t)), + base, len); + + doe_cap->read_mbox_len += rsp.header.length; + + return true; +} + +static DOEProtocol doe_cdat_prot[] = { + { CXL_VENDOR_ID, CXL_DOE_TABLE_ACCESS, cxl_doe_cdat_rsp }, + { } +}; + +enum { + CXL_USP_CDAT_SSLBIS_LAT, + CXL_USP_CDAT_SSLBIS_BW, + CXL_USP_CDAT_NUM_ENTRIES +}; + +static int build_cdat_table(CDATSubHeader ***cdat_table, void *priv) +{ + g_autofree CDATSslbis *sslbis_latency = NULL; + g_autofree CDATSslbis *sslbis_bandwidth = NULL; + CXLUpstreamPort *us = CXL_USP(priv); + PCIBus *bus = &PCI_BRIDGE(us)->sec_bus; + int devfn, sslbis_size, i; + int count = 0; + uint16_t port_ids[256]; + + for (devfn = 0; devfn < ARRAY_SIZE(bus->devices); devfn++) { + PCIDevice *d = bus->devices[devfn]; + PCIEPort *port; + + if (!d || !pci_is_express(d) || !d->exp.exp_cap) { + continue; + } + + /* + * Whilst the PCI express spec doesn't allow anything other than + * downstream ports on this bus, let us be a little paranoid + */ + if (!object_dynamic_cast(OBJECT(d), TYPE_PCIE_PORT)) { + continue; + } + + port = PCIE_PORT(d); + port_ids[count] = port->port; + count++; + } + + /* May not yet have any ports - try again later */ + if (count == 0) { + return 0; + } + + sslbis_size = sizeof(CDATSslbis) + sizeof(*sslbis_latency->sslbe) * count; + sslbis_latency = g_malloc(sslbis_size); + if (!sslbis_latency) { + return -ENOMEM; + } + *sslbis_latency = (CDATSslbis) { + .sslbis_header = { + .header = { + .type = CDAT_TYPE_SSLBIS, + .length = sslbis_size, + }, + .data_type = HMATLB_DATA_TYPE_ACCESS_LATENCY, + .entry_base_unit = 10000, + }, + }; + + for (i = 0; i < count; i++) { + sslbis_latency->sslbe[i] = (CDATSslbe) { + .port_x_id = CDAT_PORT_ID_USP, + .port_y_id = port_ids[i], + .latency_bandwidth = 15, /* 150ns */ + }; + } + + sslbis_bandwidth = g_malloc(sslbis_size); + if (!sslbis_bandwidth) { + return 0; + } + *sslbis_bandwidth = (CDATSslbis) { + .sslbis_header = { + .header = { + .type = CDAT_TYPE_SSLBIS, + .length = sslbis_size, + }, + .data_type = HMATLB_DATA_TYPE_ACCESS_BANDWIDTH, + .entry_base_unit = 1000, + }, + }; + + for (i = 0; i < count; i++) { + sslbis_bandwidth->sslbe[i] = (CDATSslbe) { + .port_x_id = CDAT_PORT_ID_USP, + .port_y_id = port_ids[i], + .latency_bandwidth = 16, /* 16 GB/s */ + }; + } + + *cdat_table = g_malloc0(sizeof(*cdat_table) * CXL_USP_CDAT_NUM_ENTRIES); + if (!*cdat_table) { + return -ENOMEM; + } + + /* Header always at start of structure */ + (*cdat_table)[CXL_USP_CDAT_SSLBIS_LAT] = g_steal_pointer(&sslbis_latency); + (*cdat_table)[CXL_USP_CDAT_SSLBIS_BW] = g_steal_pointer(&sslbis_bandwidth); + + return CXL_USP_CDAT_NUM_ENTRIES; +} + +static void free_default_cdat_table(CDATSubHeader **cdat_table, int num, + void *priv) +{ + int i; + + for (i = 0; i < num; i++) { + g_free(cdat_table[i]); + } + g_free(cdat_table); +} + +static void cxl_usp_realize(PCIDevice *d, Error **errp) +{ + PCIEPort *p = PCIE_PORT(d); + CXLUpstreamPort *usp = CXL_USP(d); + CXLComponentState *cxl_cstate = &usp->cxl_cstate; + ComponentRegisters *cregs = &cxl_cstate->crb; + MemoryRegion *component_bar = &cregs->component_registers; + int rc; + + pci_bridge_initfn(d, TYPE_PCIE_BUS); + pcie_port_init_reg(d); + + rc = msi_init(d, CXL_UPSTREAM_PORT_MSI_OFFSET, + CXL_UPSTREAM_PORT_MSI_NR_VECTOR, true, true, errp); + if (rc) { + assert(rc == -ENOTSUP); + goto err_bridge; + } + + rc = pcie_cap_init(d, CXL_UPSTREAM_PORT_PCIE_CAP_OFFSET, + PCI_EXP_TYPE_UPSTREAM, p->port, errp); + if (rc < 0) { + goto err_msi; + } + + pcie_cap_flr_init(d); + pcie_cap_deverr_init(d); + rc = pcie_aer_init(d, PCI_ERR_VER, CXL_UPSTREAM_PORT_AER_OFFSET, + PCI_ERR_SIZEOF, errp); + if (rc) { + goto err_cap; + } + + cxl_cstate->dvsec_offset = CXL_UPSTREAM_PORT_DVSEC_OFFSET; + cxl_cstate->pdev = d; + build_dvsecs(cxl_cstate); + cxl_component_register_block_init(OBJECT(d), cxl_cstate, TYPE_CXL_USP); + pci_register_bar(d, CXL_COMPONENT_REG_BAR_IDX, + PCI_BASE_ADDRESS_SPACE_MEMORY | + PCI_BASE_ADDRESS_MEM_TYPE_64, + component_bar); + + pcie_doe_init(d, &usp->doe_cdat, cxl_cstate->dvsec_offset, doe_cdat_prot, + true, 1); + + cxl_cstate->cdat.build_cdat_table = build_cdat_table; + cxl_cstate->cdat.free_cdat_table = free_default_cdat_table; + cxl_cstate->cdat.private = d; + cxl_doe_cdat_init(cxl_cstate, errp); + + return; + +err_cap: + pcie_cap_exit(d); +err_msi: + msi_uninit(d); +err_bridge: + pci_bridge_exitfn(d); +} + +static void cxl_usp_exitfn(PCIDevice *d) +{ + pcie_aer_exit(d); + pcie_cap_exit(d); + msi_uninit(d); + pci_bridge_exitfn(d); +} + +static Property cxl_upstream_props[] = { + DEFINE_PROP_STRING("cdat", CXLUpstreamPort, cxl_cstate.cdat.filename), + DEFINE_PROP_END_OF_LIST() +}; + +static void cxl_upstream_class_init(ObjectClass *oc, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(oc); + PCIDeviceClass *k = PCI_DEVICE_CLASS(oc); + + k->is_bridge = true; + k->config_write = cxl_usp_write_config; + k->config_read = cxl_usp_read_config; + k->realize = cxl_usp_realize; + k->exit = cxl_usp_exitfn; + k->vendor_id = 0x19e5; /* Huawei */ + k->device_id = 0xa128; /* Emulated CXL Switch Upstream Port */ + k->revision = 0; + set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories); + dc->desc = "CXL Switch Upstream Port"; + dc->reset = cxl_usp_reset; + device_class_set_props(dc, cxl_upstream_props); +} + +static const TypeInfo cxl_usp_info = { + .name = TYPE_CXL_USP, + .parent = TYPE_PCIE_PORT, + .instance_size = sizeof(CXLUpstreamPort), + .class_init = cxl_upstream_class_init, + .interfaces = (InterfaceInfo[]) { + { INTERFACE_PCIE_DEVICE }, + { INTERFACE_CXL_DEVICE }, + { } + }, +}; + +static void cxl_usp_register_type(void) +{ + type_register_static(&cxl_usp_info); +} + +type_init(cxl_usp_register_type); diff --git a/hw/pci-bridge/dec.c b/hw/pci-bridge/dec.c new file mode 100644 index 00000000..4773d07e --- /dev/null +++ b/hw/pci-bridge/dec.c @@ -0,0 +1,164 @@ +/* + * QEMU DEC 21154 PCI bridge + * + * Copyright (c) 2006-2007 Fabrice Bellard + * Copyright (c) 2007 Jocelyn Mayer + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +#include "qemu/osdep.h" +#include "dec.h" +#include "hw/sysbus.h" +#include "qapi/error.h" +#include "qemu/module.h" +#include "hw/pci/pci.h" +#include "hw/pci/pci_host.h" +#include "hw/pci/pci_bridge.h" +#include "hw/pci/pci_bus.h" +#include "qom/object.h" + +OBJECT_DECLARE_SIMPLE_TYPE(DECState, DEC_21154) + +struct DECState { + PCIHostState parent_obj; +}; + +static int dec_map_irq(PCIDevice *pci_dev, int irq_num) +{ + return irq_num; +} + +static void dec_pci_bridge_realize(PCIDevice *pci_dev, Error **errp) +{ + pci_bridge_initfn(pci_dev, TYPE_PCI_BUS); +} + +static void dec_21154_pci_bridge_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); + + set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories); + k->realize = dec_pci_bridge_realize; + k->exit = pci_bridge_exitfn; + k->vendor_id = PCI_VENDOR_ID_DEC; + k->device_id = PCI_DEVICE_ID_DEC_21154; + k->config_write = pci_bridge_write_config; + k->is_bridge = true; + dc->desc = "DEC 21154 PCI-PCI bridge"; + dc->reset = pci_bridge_reset; + dc->vmsd = &vmstate_pci_device; +} + +static const TypeInfo dec_21154_pci_bridge_info = { + .name = "dec-21154-p2p-bridge", + .parent = TYPE_PCI_BRIDGE, + .instance_size = sizeof(PCIBridge), + .class_init = dec_21154_pci_bridge_class_init, + .interfaces = (InterfaceInfo[]) { + { INTERFACE_CONVENTIONAL_PCI_DEVICE }, + { }, + }, +}; + +PCIBus *pci_dec_21154_init(PCIBus *parent_bus, int devfn) +{ + PCIDevice *dev; + PCIBridge *br; + + dev = pci_new_multifunction(devfn, false, "dec-21154-p2p-bridge"); + br = PCI_BRIDGE(dev); + pci_bridge_map_irq(br, "DEC 21154 PCI-PCI bridge", dec_map_irq); + pci_realize_and_unref(dev, parent_bus, &error_fatal); + return pci_bridge_get_sec_bus(br); +} + +static void pci_dec_21154_device_realize(DeviceState *dev, Error **errp) +{ + PCIHostState *phb; + SysBusDevice *sbd = SYS_BUS_DEVICE(dev); + + phb = PCI_HOST_BRIDGE(dev); + + memory_region_init_io(&phb->conf_mem, OBJECT(dev), &pci_host_conf_le_ops, + dev, "pci-conf-idx", 0x1000); + memory_region_init_io(&phb->data_mem, OBJECT(dev), &pci_host_data_le_ops, + dev, "pci-data-idx", 0x1000); + sysbus_init_mmio(sbd, &phb->conf_mem); + sysbus_init_mmio(sbd, &phb->data_mem); +} + +static void dec_21154_pci_host_realize(PCIDevice *d, Error **errp) +{ + /* PCI2PCI bridge same values as PearPC - check this */ +} + +static void dec_21154_pci_host_class_init(ObjectClass *klass, void *data) +{ + PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); + DeviceClass *dc = DEVICE_CLASS(klass); + + set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories); + k->realize = dec_21154_pci_host_realize; + k->vendor_id = PCI_VENDOR_ID_DEC; + k->device_id = PCI_DEVICE_ID_DEC_21154; + k->revision = 0x02; + k->class_id = PCI_CLASS_BRIDGE_PCI; + k->is_bridge = true; + /* + * PCI-facing part of the host bridge, not usable without the + * host-facing part, which can't be device_add'ed, yet. + */ + dc->user_creatable = false; +} + +static const TypeInfo dec_21154_pci_host_info = { + .name = "dec-21154", + .parent = TYPE_PCI_DEVICE, + .instance_size = sizeof(PCIDevice), + .class_init = dec_21154_pci_host_class_init, + .interfaces = (InterfaceInfo[]) { + { INTERFACE_CONVENTIONAL_PCI_DEVICE }, + { }, + }, +}; + +static void pci_dec_21154_device_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + + dc->realize = pci_dec_21154_device_realize; +} + +static const TypeInfo pci_dec_21154_device_info = { + .name = TYPE_DEC_21154, + .parent = TYPE_PCI_HOST_BRIDGE, + .instance_size = sizeof(DECState), + .class_init = pci_dec_21154_device_class_init, +}; + +static void dec_register_types(void) +{ + type_register_static(&pci_dec_21154_device_info); + type_register_static(&dec_21154_pci_host_info); + type_register_static(&dec_21154_pci_bridge_info); +} + +type_init(dec_register_types) diff --git a/hw/pci-bridge/dec.h b/hw/pci-bridge/dec.h new file mode 100644 index 00000000..869e90b1 --- /dev/null +++ b/hw/pci-bridge/dec.h @@ -0,0 +1,9 @@ +#ifndef HW_PCI_BRIDGE_DEC_H +#define HW_PCI_BRIDGE_DEC_H + + +#define TYPE_DEC_21154 "dec-21154-sysbus" + +PCIBus *pci_dec_21154_init(PCIBus *parent_bus, int devfn); + +#endif diff --git a/hw/pci-bridge/gen_pcie_root_port.c b/hw/pci-bridge/gen_pcie_root_port.c new file mode 100644 index 00000000..20099a8a --- /dev/null +++ b/hw/pci-bridge/gen_pcie_root_port.c @@ -0,0 +1,178 @@ +/* + * Generic PCI Express Root Port emulation + * + * Copyright (C) 2017 Red Hat Inc + * + * Authors: + * Marcel Apfelbaum <marcel@redhat.com> + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ + +#include "qemu/osdep.h" +#include "qapi/error.h" +#include "qemu/module.h" +#include "hw/pci/msix.h" +#include "hw/pci/pcie_port.h" +#include "hw/qdev-properties.h" +#include "hw/qdev-properties-system.h" +#include "migration/vmstate.h" +#include "qom/object.h" + +#define TYPE_GEN_PCIE_ROOT_PORT "pcie-root-port" +OBJECT_DECLARE_SIMPLE_TYPE(GenPCIERootPort, GEN_PCIE_ROOT_PORT) + +#define GEN_PCIE_ROOT_PORT_AER_OFFSET 0x100 +#define GEN_PCIE_ROOT_PORT_ACS_OFFSET \ + (GEN_PCIE_ROOT_PORT_AER_OFFSET + PCI_ERR_SIZEOF) + +#define GEN_PCIE_ROOT_PORT_MSIX_NR_VECTOR 1 +#define GEN_PCIE_ROOT_DEFAULT_IO_RANGE 4096 + +struct GenPCIERootPort { + /*< private >*/ + PCIESlot parent_obj; + /*< public >*/ + + bool migrate_msix; + + /* additional resources to reserve */ + PCIResReserve res_reserve; +}; + +static uint8_t gen_rp_aer_vector(const PCIDevice *d) +{ + return 0; +} + +static int gen_rp_interrupts_init(PCIDevice *d, Error **errp) +{ + int rc; + + rc = msix_init_exclusive_bar(d, GEN_PCIE_ROOT_PORT_MSIX_NR_VECTOR, 0, errp); + + if (rc < 0) { + assert(rc == -ENOTSUP); + } else { + msix_vector_use(d, 0); + } + + return rc; +} + +static void gen_rp_interrupts_uninit(PCIDevice *d) +{ + msix_uninit_exclusive_bar(d); +} + +static bool gen_rp_test_migrate_msix(void *opaque, int version_id) +{ + GenPCIERootPort *rp = opaque; + + return rp->migrate_msix; +} + +static void gen_rp_realize(DeviceState *dev, Error **errp) +{ + PCIDevice *d = PCI_DEVICE(dev); + PCIESlot *s = PCIE_SLOT(d); + GenPCIERootPort *grp = GEN_PCIE_ROOT_PORT(d); + PCIERootPortClass *rpc = PCIE_ROOT_PORT_GET_CLASS(d); + Error *local_err = NULL; + + rpc->parent_realize(dev, &local_err); + if (local_err) { + error_propagate(errp, local_err); + return; + } + + if (grp->res_reserve.io == -1 && s->hotplug && !s->native_hotplug) { + grp->res_reserve.io = GEN_PCIE_ROOT_DEFAULT_IO_RANGE; + } + int rc = pci_bridge_qemu_reserve_cap_init(d, 0, + grp->res_reserve, errp); + + if (rc < 0) { + rpc->parent_class.exit(d); + return; + } + + if (!grp->res_reserve.io) { + pci_word_test_and_clear_mask(d->wmask + PCI_COMMAND, + PCI_COMMAND_IO); + d->wmask[PCI_IO_BASE] = 0; + d->wmask[PCI_IO_LIMIT] = 0; + } +} + +static const VMStateDescription vmstate_rp_dev = { + .name = "pcie-root-port", + .priority = MIG_PRI_PCI_BUS, + .version_id = 1, + .minimum_version_id = 1, + .post_load = pcie_cap_slot_post_load, + .fields = (VMStateField[]) { + VMSTATE_PCI_DEVICE(parent_obj.parent_obj.parent_obj, PCIESlot), + VMSTATE_STRUCT(parent_obj.parent_obj.parent_obj.exp.aer_log, + PCIESlot, 0, vmstate_pcie_aer_log, PCIEAERLog), + VMSTATE_MSIX_TEST(parent_obj.parent_obj.parent_obj.parent_obj, + GenPCIERootPort, + gen_rp_test_migrate_msix), + VMSTATE_END_OF_LIST() + } +}; + +static Property gen_rp_props[] = { + DEFINE_PROP_BOOL("x-migrate-msix", GenPCIERootPort, + migrate_msix, true), + DEFINE_PROP_UINT32("bus-reserve", GenPCIERootPort, + res_reserve.bus, -1), + DEFINE_PROP_SIZE("io-reserve", GenPCIERootPort, + res_reserve.io, -1), + DEFINE_PROP_SIZE("mem-reserve", GenPCIERootPort, + res_reserve.mem_non_pref, -1), + DEFINE_PROP_SIZE("pref32-reserve", GenPCIERootPort, + res_reserve.mem_pref_32, -1), + DEFINE_PROP_SIZE("pref64-reserve", GenPCIERootPort, + res_reserve.mem_pref_64, -1), + DEFINE_PROP_PCIE_LINK_SPEED("x-speed", PCIESlot, + speed, PCIE_LINK_SPEED_16), + DEFINE_PROP_PCIE_LINK_WIDTH("x-width", PCIESlot, + width, PCIE_LINK_WIDTH_32), + DEFINE_PROP_END_OF_LIST() +}; + +static void gen_rp_dev_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); + PCIERootPortClass *rpc = PCIE_ROOT_PORT_CLASS(klass); + + k->vendor_id = PCI_VENDOR_ID_REDHAT; + k->device_id = PCI_DEVICE_ID_REDHAT_PCIE_RP; + dc->desc = "PCI Express Root Port"; + dc->vmsd = &vmstate_rp_dev; + device_class_set_props(dc, gen_rp_props); + + device_class_set_parent_realize(dc, gen_rp_realize, &rpc->parent_realize); + + rpc->aer_vector = gen_rp_aer_vector; + rpc->interrupts_init = gen_rp_interrupts_init; + rpc->interrupts_uninit = gen_rp_interrupts_uninit; + rpc->aer_offset = GEN_PCIE_ROOT_PORT_AER_OFFSET; + rpc->acs_offset = GEN_PCIE_ROOT_PORT_ACS_OFFSET; +} + +static const TypeInfo gen_rp_dev_info = { + .name = TYPE_GEN_PCIE_ROOT_PORT, + .parent = TYPE_PCIE_ROOT_PORT, + .instance_size = sizeof(GenPCIERootPort), + .class_init = gen_rp_dev_class_init, +}; + + static void gen_rp_register_types(void) + { + type_register_static(&gen_rp_dev_info); + } + type_init(gen_rp_register_types) diff --git a/hw/pci-bridge/i82801b11.c b/hw/pci-bridge/i82801b11.c new file mode 100644 index 00000000..f28181e2 --- /dev/null +++ b/hw/pci-bridge/i82801b11.c @@ -0,0 +1,122 @@ +/* + * Copyright (c) 2006 Fabrice Bellard + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ +/* + * QEMU i82801b11 dmi-to-pci Bridge Emulation + * + * Copyright (c) 2009, 2010, 2011 + * Isaku Yamahata <yamahata at valinux co jp> + * VA Linux Systems Japan K.K. + * Copyright (C) 2012 Jason Baron <jbaron@redhat.com> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, see <http://www.gnu.org/licenses/> + */ + +#include "qemu/osdep.h" +#include "hw/pci/pci.h" +#include "migration/vmstate.h" +#include "qemu/module.h" +#include "hw/i386/ich9.h" + +/*****************************************************************************/ +/* ICH9 DMI-to-PCI bridge */ +#define I82801ba_SSVID_OFFSET 0x50 +#define I82801ba_SSVID_SVID 0 +#define I82801ba_SSVID_SSID 0 + +typedef struct I82801b11Bridge { + /*< private >*/ + PCIBridge parent_obj; + /*< public >*/ +} I82801b11Bridge; + +static void i82801b11_bridge_realize(PCIDevice *d, Error **errp) +{ + int rc; + + pci_bridge_initfn(d, TYPE_PCI_BUS); + + rc = pci_bridge_ssvid_init(d, I82801ba_SSVID_OFFSET, + I82801ba_SSVID_SVID, I82801ba_SSVID_SSID, + errp); + if (rc < 0) { + goto err_bridge; + } + pci_config_set_prog_interface(d->config, PCI_CLASS_BRIDGE_PCI_INF_SUB); + return; + +err_bridge: + pci_bridge_exitfn(d); +} + +static const VMStateDescription i82801b11_bridge_dev_vmstate = { + .name = "i82801b11_bridge", + .priority = MIG_PRI_PCI_BUS, + .fields = (VMStateField[]) { + VMSTATE_PCI_DEVICE(parent_obj, PCIBridge), + VMSTATE_END_OF_LIST() + } +}; + +static void i82801b11_bridge_class_init(ObjectClass *klass, void *data) +{ + PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); + DeviceClass *dc = DEVICE_CLASS(klass); + + k->is_bridge = true; + k->vendor_id = PCI_VENDOR_ID_INTEL; + k->device_id = PCI_DEVICE_ID_INTEL_82801BA_11; + k->revision = ICH9_D2P_A2_REVISION; + k->realize = i82801b11_bridge_realize; + k->config_write = pci_bridge_write_config; + dc->vmsd = &i82801b11_bridge_dev_vmstate; + dc->reset = pci_bridge_reset; + set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories); +} + +static const TypeInfo i82801b11_bridge_info = { + .name = "i82801b11-bridge", + .parent = TYPE_PCI_BRIDGE, + .instance_size = sizeof(I82801b11Bridge), + .class_init = i82801b11_bridge_class_init, + .interfaces = (InterfaceInfo[]) { + { INTERFACE_CONVENTIONAL_PCI_DEVICE }, + { }, + }, +}; + +static void d2pbr_register(void) +{ + type_register_static(&i82801b11_bridge_info); +} + +type_init(d2pbr_register); diff --git a/hw/pci-bridge/ioh3420.c b/hw/pci-bridge/ioh3420.c new file mode 100644 index 00000000..f1e16135 --- /dev/null +++ b/hw/pci-bridge/ioh3420.c @@ -0,0 +1,130 @@ +/* + * ioh3420.c + * Intel X58 north bridge IOH + * PCI Express root port device id 3420 + * + * Copyright (c) 2010 Isaku Yamahata <yamahata at valinux co jp> + * VA Linux Systems Japan K.K. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, see <http://www.gnu.org/licenses/>. + */ + +#include "qemu/osdep.h" +#include "hw/pci/pci_ids.h" +#include "hw/pci/msi.h" +#include "hw/pci/pcie.h" +#include "hw/pci/pcie_port.h" +#include "migration/vmstate.h" +#include "qemu/module.h" + +#define PCI_DEVICE_ID_IOH_EPORT 0x3420 /* D0:F0 express mode */ +#define PCI_DEVICE_ID_IOH_REV 0x2 +#define IOH_EP_SSVID_OFFSET 0x40 +#define IOH_EP_SSVID_SVID PCI_VENDOR_ID_INTEL +#define IOH_EP_SSVID_SSID 0 +#define IOH_EP_MSI_OFFSET 0x60 +#define IOH_EP_MSI_SUPPORTED_FLAGS PCI_MSI_FLAGS_MASKBIT +#define IOH_EP_MSI_NR_VECTOR 2 +#define IOH_EP_EXP_OFFSET 0x90 +#define IOH_EP_AER_OFFSET 0x100 + +/* + * If two MSI vector are allocated, Advanced Error Interrupt Message Number + * is 1. otherwise 0. + * 17.12.5.10 RPERRSTS, 32:27 bit Advanced Error Interrupt Message Number. + */ +static uint8_t ioh3420_aer_vector(const PCIDevice *d) +{ + switch (msi_nr_vectors_allocated(d)) { + case 1: + return 0; + case 2: + return 1; + case 4: + case 8: + case 16: + case 32: + default: + break; + } + abort(); + return 0; +} + +static int ioh3420_interrupts_init(PCIDevice *d, Error **errp) +{ + int rc; + + rc = msi_init(d, IOH_EP_MSI_OFFSET, IOH_EP_MSI_NR_VECTOR, + IOH_EP_MSI_SUPPORTED_FLAGS & PCI_MSI_FLAGS_64BIT, + IOH_EP_MSI_SUPPORTED_FLAGS & PCI_MSI_FLAGS_MASKBIT, + errp); + if (rc < 0) { + assert(rc == -ENOTSUP); + } + + return rc; +} + +static void ioh3420_interrupts_uninit(PCIDevice *d) +{ + msi_uninit(d); +} + +static const VMStateDescription vmstate_ioh3420 = { + .name = "ioh-3240-express-root-port", + .priority = MIG_PRI_PCI_BUS, + .version_id = 1, + .minimum_version_id = 1, + .post_load = pcie_cap_slot_post_load, + .fields = (VMStateField[]) { + VMSTATE_PCI_DEVICE(parent_obj.parent_obj.parent_obj, PCIESlot), + VMSTATE_STRUCT(parent_obj.parent_obj.parent_obj.exp.aer_log, + PCIESlot, 0, vmstate_pcie_aer_log, PCIEAERLog), + VMSTATE_END_OF_LIST() + } +}; + +static void ioh3420_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); + PCIERootPortClass *rpc = PCIE_ROOT_PORT_CLASS(klass); + + k->vendor_id = PCI_VENDOR_ID_INTEL; + k->device_id = PCI_DEVICE_ID_IOH_EPORT; + k->revision = PCI_DEVICE_ID_IOH_REV; + dc->desc = "Intel IOH device id 3420 PCIE Root Port"; + dc->vmsd = &vmstate_ioh3420; + rpc->aer_vector = ioh3420_aer_vector; + rpc->interrupts_init = ioh3420_interrupts_init; + rpc->interrupts_uninit = ioh3420_interrupts_uninit; + rpc->exp_offset = IOH_EP_EXP_OFFSET; + rpc->aer_offset = IOH_EP_AER_OFFSET; + rpc->ssvid_offset = IOH_EP_SSVID_OFFSET; + rpc->ssid = IOH_EP_SSVID_SSID; +} + +static const TypeInfo ioh3420_info = { + .name = "ioh3420", + .parent = TYPE_PCIE_ROOT_PORT, + .class_init = ioh3420_class_init, +}; + +static void ioh3420_register_types(void) +{ + type_register_static(&ioh3420_info); +} + +type_init(ioh3420_register_types) diff --git a/hw/pci-bridge/meson.build b/hw/pci-bridge/meson.build new file mode 100644 index 00000000..243ceeda --- /dev/null +++ b/hw/pci-bridge/meson.build @@ -0,0 +1,18 @@ +pci_ss = ss.source_set() +pci_ss.add(files('pci_bridge_dev.c')) +pci_ss.add(when: 'CONFIG_I82801B11', if_true: files('i82801b11.c')) +pci_ss.add(when: 'CONFIG_IOH3420', if_true: files('ioh3420.c')) +pci_ss.add(when: 'CONFIG_PCIE_PORT', if_true: files('pcie_root_port.c', 'gen_pcie_root_port.c', 'pcie_pci_bridge.c')) +pci_ss.add(when: 'CONFIG_PXB', if_true: files('pci_expander_bridge.c'), + if_false: files('pci_expander_bridge_stubs.c')) +pci_ss.add(when: 'CONFIG_XIO3130', if_true: files('xio3130_upstream.c', 'xio3130_downstream.c')) +pci_ss.add(when: 'CONFIG_CXL', if_true: files('cxl_root_port.c', 'cxl_upstream.c', 'cxl_downstream.c')) + +# NewWorld PowerMac +pci_ss.add(when: 'CONFIG_DEC_PCI', if_true: files('dec.c')) +# Sun4u +pci_ss.add(when: 'CONFIG_SIMBA', if_true: files('simba.c')) + +softmmu_ss.add_all(when: 'CONFIG_PCI', if_true: pci_ss) + +softmmu_ss.add(when: 'CONFIG_ALL', if_true: files('pci_expander_bridge_stubs.c')) diff --git a/hw/pci-bridge/pci_bridge_dev.c b/hw/pci-bridge/pci_bridge_dev.c new file mode 100644 index 00000000..657a06dd --- /dev/null +++ b/hw/pci-bridge/pci_bridge_dev.c @@ -0,0 +1,308 @@ +/* + * Standard PCI Bridge Device + * + * Copyright (c) 2011 Red Hat Inc. Author: Michael S. Tsirkin <mst@redhat.com> + * + * http://www.pcisig.com/specifications/conventional/pci_to_pci_bridge_architecture/ + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, see <http://www.gnu.org/licenses/>. + */ + +#include "qemu/osdep.h" +#include "qapi/error.h" +#include "qemu/module.h" +#include "hw/pci/pci_bridge.h" +#include "hw/pci/pci_ids.h" +#include "hw/pci/msi.h" +#include "hw/pci/shpc.h" +#include "hw/pci/slotid_cap.h" +#include "hw/qdev-properties.h" +#include "exec/memory.h" +#include "hw/pci/pci_bus.h" +#include "hw/hotplug.h" +#include "qom/object.h" + +#define TYPE_PCI_BRIDGE_DEV "pci-bridge" +#define TYPE_PCI_BRIDGE_SEAT_DEV "pci-bridge-seat" +OBJECT_DECLARE_SIMPLE_TYPE(PCIBridgeDev, PCI_BRIDGE_DEV) + +struct PCIBridgeDev { + /*< private >*/ + PCIBridge parent_obj; + /*< public >*/ + + MemoryRegion bar; + uint8_t chassis_nr; +#define PCI_BRIDGE_DEV_F_SHPC_REQ 0 + uint32_t flags; + + OnOffAuto msi; + + /* additional resources to reserve */ + PCIResReserve res_reserve; +}; + +static void pci_bridge_dev_realize(PCIDevice *dev, Error **errp) +{ + PCIBridge *br = PCI_BRIDGE(dev); + PCIBridgeDev *bridge_dev = PCI_BRIDGE_DEV(dev); + int err; + Error *local_err = NULL; + + pci_bridge_initfn(dev, TYPE_PCI_BUS); + + if (bridge_dev->flags & (1 << PCI_BRIDGE_DEV_F_SHPC_REQ)) { + dev->config[PCI_INTERRUPT_PIN] = 0x1; + memory_region_init(&bridge_dev->bar, OBJECT(dev), "shpc-bar", + shpc_bar_size(dev)); + err = shpc_init(dev, &br->sec_bus, &bridge_dev->bar, 0, errp); + if (err) { + goto shpc_error; + } + } else { + /* MSI is not applicable without SHPC */ + bridge_dev->msi = ON_OFF_AUTO_OFF; + } + + err = slotid_cap_init(dev, 0, bridge_dev->chassis_nr, 0, errp); + if (err) { + goto slotid_error; + } + + if (bridge_dev->msi != ON_OFF_AUTO_OFF) { + /* it means SHPC exists, because MSI is needed by SHPC */ + + err = msi_init(dev, 0, 1, true, true, &local_err); + /* Any error other than -ENOTSUP(board's MSI support is broken) + * is a programming error */ + assert(!err || err == -ENOTSUP); + if (err && bridge_dev->msi == ON_OFF_AUTO_ON) { + /* Can't satisfy user's explicit msi=on request, fail */ + error_append_hint(&local_err, "You have to use msi=auto (default) " + "or msi=off with this machine type.\n"); + error_propagate(errp, local_err); + goto msi_error; + } + assert(!local_err || bridge_dev->msi == ON_OFF_AUTO_AUTO); + /* With msi=auto, we fall back to MSI off silently */ + error_free(local_err); + } + + err = pci_bridge_qemu_reserve_cap_init(dev, 0, + bridge_dev->res_reserve, errp); + if (err) { + goto cap_error; + } + + if (shpc_present(dev)) { + /* TODO: spec recommends using 64 bit prefetcheable BAR. + * Check whether that works well. */ + pci_register_bar(dev, 0, PCI_BASE_ADDRESS_SPACE_MEMORY | + PCI_BASE_ADDRESS_MEM_TYPE_64, &bridge_dev->bar); + } + return; + +cap_error: + msi_uninit(dev); +msi_error: + slotid_cap_cleanup(dev); +slotid_error: + if (shpc_present(dev)) { + shpc_cleanup(dev, &bridge_dev->bar); + } +shpc_error: + pci_bridge_exitfn(dev); +} + +static void pci_bridge_dev_exitfn(PCIDevice *dev) +{ + PCIBridgeDev *bridge_dev = PCI_BRIDGE_DEV(dev); + + pci_del_capability(dev, PCI_CAP_ID_VNDR, sizeof(PCIBridgeQemuCap)); + if (msi_present(dev)) { + msi_uninit(dev); + } + slotid_cap_cleanup(dev); + if (shpc_present(dev)) { + shpc_cleanup(dev, &bridge_dev->bar); + } + pci_bridge_exitfn(dev); +} + +static void pci_bridge_dev_instance_finalize(Object *obj) +{ + /* this function is idempotent and handles (PCIDevice.shpc == NULL) */ + shpc_free(PCI_DEVICE(obj)); +} + +static void pci_bridge_dev_write_config(PCIDevice *d, + uint32_t address, uint32_t val, int len) +{ + pci_bridge_write_config(d, address, val, len); + if (msi_present(d)) { + msi_write_config(d, address, val, len); + } + if (shpc_present(d)) { + shpc_cap_write_config(d, address, val, len); + } +} + +static void qdev_pci_bridge_dev_reset(DeviceState *qdev) +{ + PCIDevice *dev = PCI_DEVICE(qdev); + + pci_bridge_reset(qdev); + if (shpc_present(dev)) { + shpc_reset(dev); + } +} + +static Property pci_bridge_dev_properties[] = { + /* Note: 0 is not a legal chassis number. */ + DEFINE_PROP_UINT8(PCI_BRIDGE_DEV_PROP_CHASSIS_NR, PCIBridgeDev, chassis_nr, + 0), + DEFINE_PROP_ON_OFF_AUTO(PCI_BRIDGE_DEV_PROP_MSI, PCIBridgeDev, msi, + ON_OFF_AUTO_AUTO), + DEFINE_PROP_BIT(PCI_BRIDGE_DEV_PROP_SHPC, PCIBridgeDev, flags, + PCI_BRIDGE_DEV_F_SHPC_REQ, true), + DEFINE_PROP_UINT32("bus-reserve", PCIBridgeDev, + res_reserve.bus, -1), + DEFINE_PROP_SIZE("io-reserve", PCIBridgeDev, + res_reserve.io, -1), + DEFINE_PROP_SIZE("mem-reserve", PCIBridgeDev, + res_reserve.mem_non_pref, -1), + DEFINE_PROP_SIZE("pref32-reserve", PCIBridgeDev, + res_reserve.mem_pref_32, -1), + DEFINE_PROP_SIZE("pref64-reserve", PCIBridgeDev, + res_reserve.mem_pref_64, -1), + + DEFINE_PROP_END_OF_LIST(), +}; + +static bool pci_device_shpc_present(void *opaque, int version_id) +{ + PCIDevice *dev = opaque; + + return shpc_present(dev); +} + +static const VMStateDescription pci_bridge_dev_vmstate = { + .name = "pci_bridge", + .priority = MIG_PRI_PCI_BUS, + .fields = (VMStateField[]) { + VMSTATE_PCI_DEVICE(parent_obj, PCIBridge), + SHPC_VMSTATE(shpc, PCIDevice, pci_device_shpc_present), + VMSTATE_END_OF_LIST() + } +}; + +void pci_bridge_dev_plug_cb(HotplugHandler *hotplug_dev, DeviceState *dev, + Error **errp) +{ + PCIDevice *pci_hotplug_dev = PCI_DEVICE(hotplug_dev); + + if (!shpc_present(pci_hotplug_dev)) { + error_setg(errp, "standard hotplug controller has been disabled for " + "this %s", object_get_typename(OBJECT(hotplug_dev))); + return; + } + shpc_device_plug_cb(hotplug_dev, dev, errp); +} + +void pci_bridge_dev_unplug_cb(HotplugHandler *hotplug_dev, DeviceState *dev, + Error **errp) +{ + PCIDevice *pci_hotplug_dev = PCI_DEVICE(hotplug_dev); + + g_assert(shpc_present(pci_hotplug_dev)); + shpc_device_unplug_cb(hotplug_dev, dev, errp); +} + +void pci_bridge_dev_unplug_request_cb(HotplugHandler *hotplug_dev, + DeviceState *dev, Error **errp) +{ + PCIDevice *pci_hotplug_dev = PCI_DEVICE(hotplug_dev); + + if (!shpc_present(pci_hotplug_dev)) { + error_setg(errp, "standard hotplug controller has been disabled for " + "this %s", object_get_typename(OBJECT(hotplug_dev))); + return; + } + shpc_device_unplug_request_cb(hotplug_dev, dev, errp); +} + +static void pci_bridge_dev_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); + HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(klass); + + k->realize = pci_bridge_dev_realize; + k->exit = pci_bridge_dev_exitfn; + k->config_write = pci_bridge_dev_write_config; + k->vendor_id = PCI_VENDOR_ID_REDHAT; + k->device_id = PCI_DEVICE_ID_REDHAT_BRIDGE; + k->class_id = PCI_CLASS_BRIDGE_PCI; + k->is_bridge = true; + dc->desc = "Standard PCI Bridge"; + dc->reset = qdev_pci_bridge_dev_reset; + device_class_set_props(dc, pci_bridge_dev_properties); + dc->vmsd = &pci_bridge_dev_vmstate; + set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories); + hc->plug = pci_bridge_dev_plug_cb; + hc->unplug = pci_bridge_dev_unplug_cb; + hc->unplug_request = pci_bridge_dev_unplug_request_cb; +} + +static const TypeInfo pci_bridge_dev_info = { + .name = TYPE_PCI_BRIDGE_DEV, + .parent = TYPE_PCI_BRIDGE, + .instance_size = sizeof(PCIBridgeDev), + .class_init = pci_bridge_dev_class_init, + .instance_finalize = pci_bridge_dev_instance_finalize, + .interfaces = (InterfaceInfo[]) { + { TYPE_HOTPLUG_HANDLER }, + { INTERFACE_CONVENTIONAL_PCI_DEVICE }, + { } + } +}; + +/* + * Multiseat bridge. Same as the standard pci bridge, only with a + * different pci id, so we can match it easily in the guest for + * automagic multiseat configuration. See docs/multiseat.txt for more. + */ +static void pci_bridge_dev_seat_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); + + k->device_id = PCI_DEVICE_ID_REDHAT_BRIDGE_SEAT; + dc->desc = "Standard PCI Bridge (multiseat)"; +} + +static const TypeInfo pci_bridge_dev_seat_info = { + .name = TYPE_PCI_BRIDGE_SEAT_DEV, + .parent = TYPE_PCI_BRIDGE_DEV, + .instance_size = sizeof(PCIBridgeDev), + .class_init = pci_bridge_dev_seat_class_init, +}; + +static void pci_bridge_dev_register(void) +{ + type_register_static(&pci_bridge_dev_info); + type_register_static(&pci_bridge_dev_seat_info); +} + +type_init(pci_bridge_dev_register); diff --git a/hw/pci-bridge/pci_expander_bridge.c b/hw/pci-bridge/pci_expander_bridge.c new file mode 100644 index 00000000..c9e817aa --- /dev/null +++ b/hw/pci-bridge/pci_expander_bridge.c @@ -0,0 +1,533 @@ +/* + * PCI Expander Bridge Device Emulation + * + * Copyright (C) 2015 Red Hat Inc + * + * Authors: + * Marcel Apfelbaum <marcel@redhat.com> + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ + +#include "qemu/osdep.h" +#include "qapi/error.h" +#include "hw/pci/pci.h" +#include "hw/pci/pci_bus.h" +#include "hw/pci/pci_host.h" +#include "hw/qdev-properties.h" +#include "hw/pci/pci_bridge.h" +#include "hw/pci-bridge/pci_expander_bridge.h" +#include "hw/cxl/cxl.h" +#include "qemu/range.h" +#include "qemu/error-report.h" +#include "qemu/module.h" +#include "sysemu/numa.h" +#include "hw/boards.h" +#include "qom/object.h" + +enum BusType { PCI, PCIE, CXL }; + +#define TYPE_PXB_BUS "pxb-bus" +typedef struct PXBBus PXBBus; +DECLARE_INSTANCE_CHECKER(PXBBus, PXB_BUS, + TYPE_PXB_BUS) + +#define TYPE_PXB_PCIE_BUS "pxb-pcie-bus" +DECLARE_INSTANCE_CHECKER(PXBBus, PXB_PCIE_BUS, + TYPE_PXB_PCIE_BUS) + +#define TYPE_PXB_CXL_BUS "pxb-cxl-bus" +DECLARE_INSTANCE_CHECKER(PXBBus, PXB_CXL_BUS, + TYPE_PXB_CXL_BUS) + +struct PXBBus { + /*< private >*/ + PCIBus parent_obj; + /*< public >*/ + + char bus_path[8]; +}; + +#define TYPE_PXB_DEVICE "pxb" +typedef struct PXBDev PXBDev; +DECLARE_INSTANCE_CHECKER(PXBDev, PXB_DEV, + TYPE_PXB_DEVICE) + +#define TYPE_PXB_PCIE_DEVICE "pxb-pcie" +DECLARE_INSTANCE_CHECKER(PXBDev, PXB_PCIE_DEV, + TYPE_PXB_PCIE_DEVICE) + +static PXBDev *convert_to_pxb(PCIDevice *dev) +{ + /* A CXL PXB's parent bus is PCIe, so the normal check won't work */ + if (object_dynamic_cast(OBJECT(dev), TYPE_PXB_CXL_DEVICE)) { + return PXB_CXL_DEV(dev); + } + + return pci_bus_is_express(pci_get_bus(dev)) + ? PXB_PCIE_DEV(dev) : PXB_DEV(dev); +} + +static GList *pxb_dev_list; + +#define TYPE_PXB_HOST "pxb-host" + +CXLComponentState *cxl_get_hb_cstate(PCIHostState *hb) +{ + CXLHost *host = PXB_CXL_HOST(hb); + + return &host->cxl_cstate; +} + +static int pxb_bus_num(PCIBus *bus) +{ + PXBDev *pxb = convert_to_pxb(bus->parent_dev); + + return pxb->bus_nr; +} + +static uint16_t pxb_bus_numa_node(PCIBus *bus) +{ + PXBDev *pxb = convert_to_pxb(bus->parent_dev); + + return pxb->numa_node; +} + +static void pxb_bus_class_init(ObjectClass *class, void *data) +{ + PCIBusClass *pbc = PCI_BUS_CLASS(class); + + pbc->bus_num = pxb_bus_num; + pbc->numa_node = pxb_bus_numa_node; +} + +static const TypeInfo pxb_bus_info = { + .name = TYPE_PXB_BUS, + .parent = TYPE_PCI_BUS, + .instance_size = sizeof(PXBBus), + .class_init = pxb_bus_class_init, +}; + +static const TypeInfo pxb_pcie_bus_info = { + .name = TYPE_PXB_PCIE_BUS, + .parent = TYPE_PCIE_BUS, + .instance_size = sizeof(PXBBus), + .class_init = pxb_bus_class_init, +}; + +static const TypeInfo pxb_cxl_bus_info = { + .name = TYPE_PXB_CXL_BUS, + .parent = TYPE_CXL_BUS, + .instance_size = sizeof(PXBBus), + .class_init = pxb_bus_class_init, +}; + +static const char *pxb_host_root_bus_path(PCIHostState *host_bridge, + PCIBus *rootbus) +{ + PXBBus *bus = pci_bus_is_cxl(rootbus) ? + PXB_CXL_BUS(rootbus) : + pci_bus_is_express(rootbus) ? PXB_PCIE_BUS(rootbus) : + PXB_BUS(rootbus); + + snprintf(bus->bus_path, 8, "0000:%02x", pxb_bus_num(rootbus)); + return bus->bus_path; +} + +static char *pxb_host_ofw_unit_address(const SysBusDevice *dev) +{ + const PCIHostState *pxb_host; + const PCIBus *pxb_bus; + const PXBDev *pxb_dev; + int position; + const DeviceState *pxb_dev_base; + const PCIHostState *main_host; + const SysBusDevice *main_host_sbd; + + pxb_host = PCI_HOST_BRIDGE(dev); + pxb_bus = pxb_host->bus; + pxb_dev = convert_to_pxb(pxb_bus->parent_dev); + position = g_list_index(pxb_dev_list, pxb_dev); + assert(position >= 0); + + pxb_dev_base = DEVICE(pxb_dev); + main_host = PCI_HOST_BRIDGE(pxb_dev_base->parent_bus->parent); + main_host_sbd = SYS_BUS_DEVICE(main_host); + + if (main_host_sbd->num_mmio > 0) { + return g_strdup_printf(TARGET_FMT_plx ",%x", + main_host_sbd->mmio[0].addr, position + 1); + } + if (main_host_sbd->num_pio > 0) { + return g_strdup_printf("i%04x,%x", + main_host_sbd->pio[0], position + 1); + } + return NULL; +} + +static void pxb_host_class_init(ObjectClass *class, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(class); + SysBusDeviceClass *sbc = SYS_BUS_DEVICE_CLASS(class); + PCIHostBridgeClass *hc = PCI_HOST_BRIDGE_CLASS(class); + + dc->fw_name = "pci"; + /* Reason: Internal part of the pxb/pxb-pcie device, not usable by itself */ + dc->user_creatable = false; + sbc->explicit_ofw_unit_address = pxb_host_ofw_unit_address; + hc->root_bus_path = pxb_host_root_bus_path; +} + +static const TypeInfo pxb_host_info = { + .name = TYPE_PXB_HOST, + .parent = TYPE_PCI_HOST_BRIDGE, + .class_init = pxb_host_class_init, +}; + +static void pxb_cxl_realize(DeviceState *dev, Error **errp) +{ + SysBusDevice *sbd = SYS_BUS_DEVICE(dev); + CXLHost *cxl = PXB_CXL_HOST(dev); + CXLComponentState *cxl_cstate = &cxl->cxl_cstate; + struct MemoryRegion *mr = &cxl_cstate->crb.component_registers; + + cxl_component_register_block_init(OBJECT(dev), cxl_cstate, + TYPE_PXB_CXL_HOST); + sysbus_init_mmio(sbd, mr); +} + +/* + * Host bridge realization has no means of knowning state associated + * with a particular machine. As such, it is nececssary to delay + * final setup of the host bridge register space until later in the + * machine bring up. + */ +void pxb_cxl_hook_up_registers(CXLState *cxl_state, PCIBus *bus, Error **errp) +{ + PXBDev *pxb = PXB_CXL_DEV(pci_bridge_get_device(bus)); + CXLHost *cxl = pxb->cxl.cxl_host_bridge; + CXLComponentState *cxl_cstate = &cxl->cxl_cstate; + struct MemoryRegion *mr = &cxl_cstate->crb.component_registers; + hwaddr offset; + + offset = memory_region_size(mr) * cxl_state->next_mr_idx; + if (offset > memory_region_size(&cxl_state->host_mr)) { + error_setg(errp, "Insufficient space for pxb cxl host register space"); + return; + } + + memory_region_add_subregion(&cxl_state->host_mr, offset, mr); + cxl_state->next_mr_idx++; +} + +static void pxb_cxl_host_class_init(ObjectClass *class, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(class); + PCIHostBridgeClass *hc = PCI_HOST_BRIDGE_CLASS(class); + + hc->root_bus_path = pxb_host_root_bus_path; + dc->fw_name = "cxl"; + dc->realize = pxb_cxl_realize; + /* Reason: Internal part of the pxb/pxb-pcie device, not usable by itself */ + dc->user_creatable = false; +} + +/* + * This is a device to handle the MMIO for a CXL host bridge. It does nothing + * else. + */ +static const TypeInfo cxl_host_info = { + .name = TYPE_PXB_CXL_HOST, + .parent = TYPE_PCI_HOST_BRIDGE, + .instance_size = sizeof(CXLHost), + .class_init = pxb_cxl_host_class_init, +}; + +/* + * Registers the PXB bus as a child of pci host root bus. + */ +static void pxb_register_bus(PCIDevice *dev, PCIBus *pxb_bus, Error **errp) +{ + PCIBus *bus = pci_get_bus(dev); + int pxb_bus_num = pci_bus_num(pxb_bus); + + if (bus->parent_dev) { + error_setg(errp, "PXB devices can be attached only to root bus"); + return; + } + + QLIST_FOREACH(bus, &bus->child, sibling) { + if (pci_bus_num(bus) == pxb_bus_num) { + error_setg(errp, "Bus %d is already in use", pxb_bus_num); + return; + } + } + QLIST_INSERT_HEAD(&pci_get_bus(dev)->child, pxb_bus, sibling); +} + +static int pxb_map_irq_fn(PCIDevice *pci_dev, int pin) +{ + PCIDevice *pxb = pci_get_bus(pci_dev)->parent_dev; + + /* + * First carry out normal swizzle to handle + * multple root ports on a pxb instance. + */ + pin = pci_swizzle_map_irq_fn(pci_dev, pin); + + /* + * The bios does not index the pxb slot number when + * it computes the IRQ because it resides on bus 0 + * and not on the current bus. + * However QEMU routes the irq through bus 0 and adds + * the pxb slot to the IRQ computation of the PXB + * device. + * + * Synchronize between bios and QEMU by canceling + * pxb's effect. + */ + return pin - PCI_SLOT(pxb->devfn); +} + +static void pxb_dev_reset(DeviceState *dev) +{ + CXLHost *cxl = PXB_CXL_DEV(dev)->cxl.cxl_host_bridge; + CXLComponentState *cxl_cstate = &cxl->cxl_cstate; + uint32_t *reg_state = cxl_cstate->crb.cache_mem_registers; + uint32_t *write_msk = cxl_cstate->crb.cache_mem_regs_write_mask; + + cxl_component_register_init_common(reg_state, write_msk, CXL2_ROOT_PORT); + ARRAY_FIELD_DP32(reg_state, CXL_HDM_DECODER_CAPABILITY, TARGET_COUNT, 8); +} + +static gint pxb_compare(gconstpointer a, gconstpointer b) +{ + const PXBDev *pxb_a = a, *pxb_b = b; + + return pxb_a->bus_nr < pxb_b->bus_nr ? -1 : + pxb_a->bus_nr > pxb_b->bus_nr ? 1 : + 0; +} + +static void pxb_dev_realize_common(PCIDevice *dev, enum BusType type, + Error **errp) +{ + PXBDev *pxb = convert_to_pxb(dev); + DeviceState *ds, *bds = NULL; + PCIBus *bus; + const char *dev_name = NULL; + Error *local_err = NULL; + MachineState *ms = MACHINE(qdev_get_machine()); + + if (ms->numa_state == NULL) { + error_setg(errp, "NUMA is not supported by this machine-type"); + return; + } + + if (pxb->numa_node != NUMA_NODE_UNASSIGNED && + pxb->numa_node >= ms->numa_state->num_nodes) { + error_setg(errp, "Illegal numa node %d", pxb->numa_node); + return; + } + + if (dev->qdev.id && *dev->qdev.id) { + dev_name = dev->qdev.id; + } + + ds = qdev_new(type == CXL ? TYPE_PXB_CXL_HOST : TYPE_PXB_HOST); + if (type == PCIE) { + bus = pci_root_bus_new(ds, dev_name, NULL, NULL, 0, TYPE_PXB_PCIE_BUS); + } else if (type == CXL) { + bus = pci_root_bus_new(ds, dev_name, NULL, NULL, 0, TYPE_PXB_CXL_BUS); + bus->flags |= PCI_BUS_CXL; + PXB_CXL_DEV(dev)->cxl.cxl_host_bridge = PXB_CXL_HOST(ds); + } else { + bus = pci_root_bus_new(ds, "pxb-internal", NULL, NULL, 0, TYPE_PXB_BUS); + bds = qdev_new("pci-bridge"); + bds->id = g_strdup(dev_name); + qdev_prop_set_uint8(bds, PCI_BRIDGE_DEV_PROP_CHASSIS_NR, pxb->bus_nr); + qdev_prop_set_bit(bds, PCI_BRIDGE_DEV_PROP_SHPC, false); + } + + bus->parent_dev = dev; + bus->address_space_mem = pci_get_bus(dev)->address_space_mem; + bus->address_space_io = pci_get_bus(dev)->address_space_io; + bus->map_irq = pxb_map_irq_fn; + + PCI_HOST_BRIDGE(ds)->bus = bus; + PCI_HOST_BRIDGE(ds)->bypass_iommu = pxb->bypass_iommu; + + pxb_register_bus(dev, bus, &local_err); + if (local_err) { + error_propagate(errp, local_err); + goto err_register_bus; + } + + sysbus_realize_and_unref(SYS_BUS_DEVICE(ds), &error_fatal); + if (bds) { + qdev_realize_and_unref(bds, &bus->qbus, &error_fatal); + } + + pci_word_test_and_set_mask(dev->config + PCI_STATUS, + PCI_STATUS_66MHZ | PCI_STATUS_FAST_BACK); + pci_config_set_class(dev->config, PCI_CLASS_BRIDGE_HOST); + + pxb_dev_list = g_list_insert_sorted(pxb_dev_list, pxb, pxb_compare); + return; + +err_register_bus: + object_unref(OBJECT(bds)); + object_unparent(OBJECT(bus)); + object_unref(OBJECT(ds)); +} + +static void pxb_dev_realize(PCIDevice *dev, Error **errp) +{ + if (pci_bus_is_express(pci_get_bus(dev))) { + error_setg(errp, "pxb devices cannot reside on a PCIe bus"); + return; + } + + pxb_dev_realize_common(dev, PCI, errp); +} + +static void pxb_dev_exitfn(PCIDevice *pci_dev) +{ + PXBDev *pxb = convert_to_pxb(pci_dev); + + pxb_dev_list = g_list_remove(pxb_dev_list, pxb); +} + +static Property pxb_dev_properties[] = { + /* Note: 0 is not a legal PXB bus number. */ + DEFINE_PROP_UINT8("bus_nr", PXBDev, bus_nr, 0), + DEFINE_PROP_UINT16("numa_node", PXBDev, numa_node, NUMA_NODE_UNASSIGNED), + DEFINE_PROP_BOOL("bypass_iommu", PXBDev, bypass_iommu, false), + DEFINE_PROP_END_OF_LIST(), +}; + +static void pxb_dev_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); + + k->realize = pxb_dev_realize; + k->exit = pxb_dev_exitfn; + k->vendor_id = PCI_VENDOR_ID_REDHAT; + k->device_id = PCI_DEVICE_ID_REDHAT_PXB; + k->class_id = PCI_CLASS_BRIDGE_HOST; + + dc->desc = "PCI Expander Bridge"; + device_class_set_props(dc, pxb_dev_properties); + dc->hotpluggable = false; + set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories); +} + +static const TypeInfo pxb_dev_info = { + .name = TYPE_PXB_DEVICE, + .parent = TYPE_PCI_DEVICE, + .instance_size = sizeof(PXBDev), + .class_init = pxb_dev_class_init, + .interfaces = (InterfaceInfo[]) { + { INTERFACE_CONVENTIONAL_PCI_DEVICE }, + { }, + }, +}; + +static void pxb_pcie_dev_realize(PCIDevice *dev, Error **errp) +{ + if (!pci_bus_is_express(pci_get_bus(dev))) { + error_setg(errp, "pxb-pcie devices cannot reside on a PCI bus"); + return; + } + + pxb_dev_realize_common(dev, PCIE, errp); +} + +static void pxb_pcie_dev_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); + + k->realize = pxb_pcie_dev_realize; + k->exit = pxb_dev_exitfn; + k->vendor_id = PCI_VENDOR_ID_REDHAT; + k->device_id = PCI_DEVICE_ID_REDHAT_PXB_PCIE; + k->class_id = PCI_CLASS_BRIDGE_HOST; + + dc->desc = "PCI Express Expander Bridge"; + device_class_set_props(dc, pxb_dev_properties); + dc->hotpluggable = false; + set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories); +} + +static const TypeInfo pxb_pcie_dev_info = { + .name = TYPE_PXB_PCIE_DEVICE, + .parent = TYPE_PCI_DEVICE, + .instance_size = sizeof(PXBDev), + .class_init = pxb_pcie_dev_class_init, + .interfaces = (InterfaceInfo[]) { + { INTERFACE_CONVENTIONAL_PCI_DEVICE }, + { }, + }, +}; + +static void pxb_cxl_dev_realize(PCIDevice *dev, Error **errp) +{ + /* A CXL PXB's parent bus is still PCIe */ + if (!pci_bus_is_express(pci_get_bus(dev))) { + error_setg(errp, "pxb-cxl devices cannot reside on a PCI bus"); + return; + } + + pxb_dev_realize_common(dev, CXL, errp); + pxb_dev_reset(DEVICE(dev)); +} + +static void pxb_cxl_dev_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); + + k->realize = pxb_cxl_dev_realize; + k->exit = pxb_dev_exitfn; + /* + * XXX: These types of bridges don't actually show up in the hierarchy so + * vendor, device, class, etc. ids are intentionally left out. + */ + + dc->desc = "CXL Host Bridge"; + device_class_set_props(dc, pxb_dev_properties); + set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories); + + /* Host bridges aren't hotpluggable. FIXME: spec reference */ + dc->hotpluggable = false; + dc->reset = pxb_dev_reset; +} + +static const TypeInfo pxb_cxl_dev_info = { + .name = TYPE_PXB_CXL_DEVICE, + .parent = TYPE_PCI_DEVICE, + .instance_size = sizeof(PXBDev), + .class_init = pxb_cxl_dev_class_init, + .interfaces = + (InterfaceInfo[]){ + { INTERFACE_CONVENTIONAL_PCI_DEVICE }, + {}, + }, +}; + +static void pxb_register_types(void) +{ + type_register_static(&pxb_bus_info); + type_register_static(&pxb_pcie_bus_info); + type_register_static(&pxb_cxl_bus_info); + type_register_static(&pxb_host_info); + type_register_static(&cxl_host_info); + type_register_static(&pxb_dev_info); + type_register_static(&pxb_pcie_dev_info); + type_register_static(&pxb_cxl_dev_info); +} + +type_init(pxb_register_types) diff --git a/hw/pci-bridge/pci_expander_bridge_stubs.c b/hw/pci-bridge/pci_expander_bridge_stubs.c new file mode 100644 index 00000000..b3518031 --- /dev/null +++ b/hw/pci-bridge/pci_expander_bridge_stubs.c @@ -0,0 +1,14 @@ +/* + * SPDX-License-Identifier: GPL-2.0-or-later + * + * Stubs for calls made from machines to handle the case where CONFIG_PXB + * is not enabled. + */ +#include "qemu/osdep.h" +#include "qapi/error.h" +#include "hw/pci/pci.h" +#include "hw/pci/pci_bus.h" +#include "hw/pci-bridge/pci_expander_bridge.h" +#include "hw/cxl/cxl.h" + +void pxb_cxl_hook_up_registers(CXLState *state, PCIBus *bus, Error **errp) {}; diff --git a/hw/pci-bridge/pcie_pci_bridge.c b/hw/pci-bridge/pcie_pci_bridge.c new file mode 100644 index 00000000..1cd917a4 --- /dev/null +++ b/hw/pci-bridge/pcie_pci_bridge.c @@ -0,0 +1,180 @@ +/* + * QEMU Generic PCIE-PCI Bridge + * + * Copyright (c) 2017 Aleksandr Bezzubikov + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ + +#include "qemu/osdep.h" +#include "qapi/error.h" +#include "qemu/module.h" +#include "hw/pci/pci.h" +#include "hw/pci/pci_bus.h" +#include "hw/pci/pci_bridge.h" +#include "hw/pci/msi.h" +#include "hw/pci/shpc.h" +#include "hw/pci/slotid_cap.h" +#include "hw/qdev-properties.h" +#include "qom/object.h" + +struct PCIEPCIBridge { + /*< private >*/ + PCIBridge parent_obj; + + OnOffAuto msi; + MemoryRegion shpc_bar; + /*< public >*/ +}; + +#define TYPE_PCIE_PCI_BRIDGE_DEV "pcie-pci-bridge" +OBJECT_DECLARE_SIMPLE_TYPE(PCIEPCIBridge, PCIE_PCI_BRIDGE_DEV) + +static void pcie_pci_bridge_realize(PCIDevice *d, Error **errp) +{ + PCIBridge *br = PCI_BRIDGE(d); + PCIEPCIBridge *pcie_br = PCIE_PCI_BRIDGE_DEV(d); + int rc, pos; + + pci_bridge_initfn(d, TYPE_PCI_BUS); + + d->config[PCI_INTERRUPT_PIN] = 0x1; + memory_region_init(&pcie_br->shpc_bar, OBJECT(d), "shpc-bar", + shpc_bar_size(d)); + rc = shpc_init(d, &br->sec_bus, &pcie_br->shpc_bar, 0, errp); + if (rc) { + goto error; + } + + rc = pcie_cap_init(d, 0, PCI_EXP_TYPE_PCI_BRIDGE, 0, errp); + if (rc < 0) { + goto cap_error; + } + + pos = pci_add_capability(d, PCI_CAP_ID_PM, 0, PCI_PM_SIZEOF, errp); + if (pos < 0) { + goto pm_error; + } + d->exp.pm_cap = pos; + pci_set_word(d->config + pos + PCI_PM_PMC, 0x3); + + pcie_cap_arifwd_init(d); + pcie_cap_deverr_init(d); + + rc = pcie_aer_init(d, PCI_ERR_VER, 0x100, PCI_ERR_SIZEOF, errp); + if (rc < 0) { + goto aer_error; + } + + Error *local_err = NULL; + if (pcie_br->msi != ON_OFF_AUTO_OFF) { + rc = msi_init(d, 0, 1, true, true, &local_err); + if (rc < 0) { + assert(rc == -ENOTSUP); + if (pcie_br->msi != ON_OFF_AUTO_ON) { + error_free(local_err); + } else { + /* failed to satisfy user's explicit request for MSI */ + error_propagate(errp, local_err); + goto msi_error; + } + } + } + pci_register_bar(d, 0, PCI_BASE_ADDRESS_SPACE_MEMORY | + PCI_BASE_ADDRESS_MEM_TYPE_64, &pcie_br->shpc_bar); + return; + +msi_error: + pcie_aer_exit(d); +aer_error: +pm_error: + pcie_cap_exit(d); +cap_error: + shpc_cleanup(d, &pcie_br->shpc_bar); +error: + pci_bridge_exitfn(d); +} + +static void pcie_pci_bridge_exit(PCIDevice *d) +{ + PCIEPCIBridge *bridge_dev = PCIE_PCI_BRIDGE_DEV(d); + pcie_cap_exit(d); + shpc_cleanup(d, &bridge_dev->shpc_bar); + pci_bridge_exitfn(d); +} + +static void pcie_pci_bridge_reset(DeviceState *qdev) +{ + PCIDevice *d = PCI_DEVICE(qdev); + pci_bridge_reset(qdev); + if (msi_present(d)) { + msi_reset(d); + } + shpc_reset(d); +} + +static void pcie_pci_bridge_write_config(PCIDevice *d, + uint32_t address, uint32_t val, int len) +{ + pci_bridge_write_config(d, address, val, len); + if (msi_present(d)) { + msi_write_config(d, address, val, len); + } + shpc_cap_write_config(d, address, val, len); +} + +static Property pcie_pci_bridge_dev_properties[] = { + DEFINE_PROP_ON_OFF_AUTO("msi", PCIEPCIBridge, msi, ON_OFF_AUTO_AUTO), + DEFINE_PROP_END_OF_LIST(), +}; + +static const VMStateDescription pcie_pci_bridge_dev_vmstate = { + .name = TYPE_PCIE_PCI_BRIDGE_DEV, + .priority = MIG_PRI_PCI_BUS, + .fields = (VMStateField[]) { + VMSTATE_PCI_DEVICE(parent_obj, PCIBridge), + SHPC_VMSTATE(shpc, PCIDevice, NULL), + VMSTATE_END_OF_LIST() + } +}; + +static void pcie_pci_bridge_class_init(ObjectClass *klass, void *data) +{ + PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); + DeviceClass *dc = DEVICE_CLASS(klass); + HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(klass); + + k->is_bridge = true; + k->vendor_id = PCI_VENDOR_ID_REDHAT; + k->device_id = PCI_DEVICE_ID_REDHAT_PCIE_BRIDGE; + k->realize = pcie_pci_bridge_realize; + k->exit = pcie_pci_bridge_exit; + k->config_write = pcie_pci_bridge_write_config; + dc->vmsd = &pcie_pci_bridge_dev_vmstate; + device_class_set_props(dc, pcie_pci_bridge_dev_properties); + dc->reset = &pcie_pci_bridge_reset; + set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories); + hc->plug = pci_bridge_dev_plug_cb; + hc->unplug = pci_bridge_dev_unplug_cb; + hc->unplug_request = pci_bridge_dev_unplug_request_cb; +} + +static const TypeInfo pcie_pci_bridge_info = { + .name = TYPE_PCIE_PCI_BRIDGE_DEV, + .parent = TYPE_PCI_BRIDGE, + .instance_size = sizeof(PCIEPCIBridge), + .class_init = pcie_pci_bridge_class_init, + .interfaces = (InterfaceInfo[]) { + { TYPE_HOTPLUG_HANDLER }, + { INTERFACE_PCIE_DEVICE }, + { }, + } +}; + +static void pciepci_register(void) +{ + type_register_static(&pcie_pci_bridge_info); +} + +type_init(pciepci_register); diff --git a/hw/pci-bridge/pcie_root_port.c b/hw/pci-bridge/pcie_root_port.c new file mode 100644 index 00000000..460e4826 --- /dev/null +++ b/hw/pci-bridge/pcie_root_port.c @@ -0,0 +1,202 @@ +/* + * Base class for PCI Express Root Ports + * + * Copyright (C) 2017 Red Hat Inc + * + * Authors: + * Marcel Apfelbaum <marcel@redhat.com> + * + * Most of the code was migrated from hw/pci-bridge/ioh3420. + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ + +#include "qemu/osdep.h" +#include "qapi/error.h" +#include "qemu/module.h" +#include "hw/pci/pcie_port.h" +#include "hw/qdev-properties.h" + +static void rp_aer_vector_update(PCIDevice *d) +{ + PCIERootPortClass *rpc = PCIE_ROOT_PORT_GET_CLASS(d); + + if (rpc->aer_vector) { + pcie_aer_root_set_vector(d, rpc->aer_vector(d)); + } +} + +static void rp_write_config(PCIDevice *d, uint32_t address, + uint32_t val, int len) +{ + uint32_t root_cmd = + pci_get_long(d->config + d->exp.aer_cap + PCI_ERR_ROOT_COMMAND); + uint16_t slt_ctl, slt_sta; + + pcie_cap_slot_get(d, &slt_ctl, &slt_sta); + + pci_bridge_write_config(d, address, val, len); + rp_aer_vector_update(d); + pcie_cap_slot_write_config(d, slt_ctl, slt_sta, address, val, len); + pcie_aer_write_config(d, address, val, len); + pcie_aer_root_write_config(d, address, val, len, root_cmd); +} + +static void rp_reset(DeviceState *qdev) +{ + PCIDevice *d = PCI_DEVICE(qdev); + + rp_aer_vector_update(d); + pcie_cap_root_reset(d); + pcie_cap_deverr_reset(d); + pcie_cap_slot_reset(d); + pcie_cap_arifwd_reset(d); + pcie_acs_reset(d); + pcie_aer_root_reset(d); + pci_bridge_reset(qdev); + pci_bridge_disable_base_limit(d); +} + +static void rp_realize(PCIDevice *d, Error **errp) +{ + PCIEPort *p = PCIE_PORT(d); + PCIESlot *s = PCIE_SLOT(d); + PCIDeviceClass *dc = PCI_DEVICE_GET_CLASS(d); + PCIERootPortClass *rpc = PCIE_ROOT_PORT_GET_CLASS(d); + int rc; + + pci_config_set_interrupt_pin(d->config, 1); + if (d->cap_present & QEMU_PCIE_CAP_CXL) { + pci_bridge_initfn(d, TYPE_CXL_BUS); + } else { + pci_bridge_initfn(d, TYPE_PCIE_BUS); + } + pcie_port_init_reg(d); + + rc = pci_bridge_ssvid_init(d, rpc->ssvid_offset, dc->vendor_id, + rpc->ssid, errp); + if (rc < 0) { + error_append_hint(errp, "Can't init SSV ID, error %d\n", rc); + goto err_bridge; + } + + if (rpc->interrupts_init) { + rc = rpc->interrupts_init(d, errp); + if (rc < 0) { + goto err_bridge; + } + } + + rc = pcie_cap_init(d, rpc->exp_offset, PCI_EXP_TYPE_ROOT_PORT, + p->port, errp); + if (rc < 0) { + error_append_hint(errp, "Can't add Root Port capability, " + "error %d\n", rc); + goto err_int; + } + + pcie_cap_arifwd_init(d); + pcie_cap_deverr_init(d); + pcie_cap_slot_init(d, s); + pcie_cap_root_init(d); + + pcie_chassis_create(s->chassis); + rc = pcie_chassis_add_slot(s); + if (rc < 0) { + error_setg(errp, "Can't add chassis slot, error %d", rc); + goto err_pcie_cap; + } + + rc = pcie_aer_init(d, PCI_ERR_VER, rpc->aer_offset, + PCI_ERR_SIZEOF, errp); + if (rc < 0) { + goto err; + } + pcie_aer_root_init(d); + rp_aer_vector_update(d); + + if (rpc->acs_offset && !s->disable_acs) { + pcie_acs_init(d, rpc->acs_offset); + } + return; + +err: + pcie_chassis_del_slot(s); +err_pcie_cap: + pcie_cap_exit(d); +err_int: + if (rpc->interrupts_uninit) { + rpc->interrupts_uninit(d); + } +err_bridge: + pci_bridge_exitfn(d); +} + +static void rp_exit(PCIDevice *d) +{ + PCIERootPortClass *rpc = PCIE_ROOT_PORT_GET_CLASS(d); + PCIESlot *s = PCIE_SLOT(d); + + pcie_aer_exit(d); + pcie_chassis_del_slot(s); + pcie_cap_exit(d); + if (rpc->interrupts_uninit) { + rpc->interrupts_uninit(d); + } + pci_bridge_exitfn(d); +} + +static Property rp_props[] = { + DEFINE_PROP_BIT(COMPAT_PROP_PCP, PCIDevice, cap_present, + QEMU_PCIE_SLTCAP_PCP_BITNR, true), + DEFINE_PROP_BOOL("disable-acs", PCIESlot, disable_acs, false), + DEFINE_PROP_END_OF_LIST() +}; + +static void rp_instance_post_init(Object *obj) +{ + PCIESlot *s = PCIE_SLOT(obj); + + if (!s->speed) { + s->speed = QEMU_PCI_EXP_LNK_2_5GT; + } + + if (!s->width) { + s->width = QEMU_PCI_EXP_LNK_X1; + } +} + +static void rp_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); + + k->is_bridge = true; + k->config_write = rp_write_config; + k->realize = rp_realize; + k->exit = rp_exit; + set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories); + dc->reset = rp_reset; + device_class_set_props(dc, rp_props); +} + +static const TypeInfo rp_info = { + .name = TYPE_PCIE_ROOT_PORT, + .parent = TYPE_PCIE_SLOT, + .instance_post_init = rp_instance_post_init, + .class_init = rp_class_init, + .abstract = true, + .class_size = sizeof(PCIERootPortClass), + .interfaces = (InterfaceInfo[]) { + { INTERFACE_PCIE_DEVICE }, + { } + }, +}; + +static void rp_register_types(void) +{ + type_register_static(&rp_info); +} + +type_init(rp_register_types) diff --git a/hw/pci-bridge/simba.c b/hw/pci-bridge/simba.c new file mode 100644 index 00000000..ba55ab19 --- /dev/null +++ b/hw/pci-bridge/simba.c @@ -0,0 +1,102 @@ +/* + * QEMU Simba PCI bridge + * + * Copyright (c) 2006 Fabrice Bellard + * Copyright (c) 2012,2013 Artyom Tarasenko + * Copyright (c) 2018 Mark Cave-Ayland + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +#include "qemu/osdep.h" +#include "hw/pci/pci.h" +#include "hw/pci/pci_bridge.h" +#include "hw/pci/pci_bus.h" +#include "qemu/module.h" +#include "hw/pci-bridge/simba.h" + +/* + * Chipset docs: + * APB: "Advanced PCI Bridge (APB) User's Manual", + * http://www.sun.com/processors/manuals/805-1251.pdf + */ + +static void simba_pci_bridge_realize(PCIDevice *dev, Error **errp) +{ + /* + * command register: + * According to PCI bridge spec, after reset + * bus master bit is off + * memory space enable bit is off + * According to manual (805-1251.pdf). + * the reset value should be zero unless the boot pin is tied high + * (which is true) and thus it should be PCI_COMMAND_MEMORY. + */ + SimbaPCIBridge *br = SIMBA_PCI_BRIDGE(dev); + + pci_bridge_initfn(dev, TYPE_PCI_BUS); + + pci_set_word(dev->config + PCI_COMMAND, PCI_COMMAND_MEMORY); + pci_set_word(dev->config + PCI_STATUS, + PCI_STATUS_FAST_BACK | PCI_STATUS_66MHZ | + PCI_STATUS_DEVSEL_MEDIUM); + + /* Allow 32-bit IO addresses */ + pci_set_word(dev->config + PCI_IO_BASE, PCI_IO_RANGE_TYPE_32); + pci_set_word(dev->config + PCI_IO_LIMIT, PCI_IO_RANGE_TYPE_32); + pci_set_word(dev->wmask + PCI_IO_BASE_UPPER16, 0xffff); + pci_set_word(dev->wmask + PCI_IO_LIMIT_UPPER16, 0xffff); + + pci_bridge_update_mappings(PCI_BRIDGE(br)); +} + +static void simba_pci_bridge_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); + + k->realize = simba_pci_bridge_realize; + k->exit = pci_bridge_exitfn; + k->vendor_id = PCI_VENDOR_ID_SUN; + k->device_id = PCI_DEVICE_ID_SUN_SIMBA; + k->revision = 0x11; + k->config_write = pci_bridge_write_config; + k->is_bridge = true; + set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories); + dc->reset = pci_bridge_reset; + dc->vmsd = &vmstate_pci_device; +} + +static const TypeInfo simba_pci_bridge_info = { + .name = TYPE_SIMBA_PCI_BRIDGE, + .parent = TYPE_PCI_BRIDGE, + .class_init = simba_pci_bridge_class_init, + .instance_size = sizeof(SimbaPCIBridge), + .interfaces = (InterfaceInfo[]) { + { INTERFACE_CONVENTIONAL_PCI_DEVICE }, + { }, + }, +}; + +static void simba_register_types(void) +{ + type_register_static(&simba_pci_bridge_info); +} + +type_init(simba_register_types) diff --git a/hw/pci-bridge/xio3130_downstream.c b/hw/pci-bridge/xio3130_downstream.c new file mode 100644 index 00000000..05e2b06c --- /dev/null +++ b/hw/pci-bridge/xio3130_downstream.c @@ -0,0 +1,191 @@ +/* + * x3130_downstream.c + * TI X3130 pci express downstream port switch + * + * Copyright (c) 2010 Isaku Yamahata <yamahata at valinux co jp> + * VA Linux Systems Japan K.K. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, see <http://www.gnu.org/licenses/>. + */ + +#include "qemu/osdep.h" +#include "hw/pci/pci_ids.h" +#include "hw/pci/msi.h" +#include "hw/pci/pcie.h" +#include "hw/pci/pcie_port.h" +#include "hw/qdev-properties.h" +#include "migration/vmstate.h" +#include "qapi/error.h" +#include "qemu/module.h" +#include "hw/pci-bridge/xio3130_downstream.h" + +#define PCI_DEVICE_ID_TI_XIO3130D 0x8233 /* downstream port */ +#define XIO3130_REVISION 0x1 +#define XIO3130_MSI_OFFSET 0x70 +#define XIO3130_MSI_SUPPORTED_FLAGS PCI_MSI_FLAGS_64BIT +#define XIO3130_MSI_NR_VECTOR 1 +#define XIO3130_SSVID_OFFSET 0x80 +#define XIO3130_SSVID_SVID 0 +#define XIO3130_SSVID_SSID 0 +#define XIO3130_EXP_OFFSET 0x90 +#define XIO3130_AER_OFFSET 0x100 + +static void xio3130_downstream_write_config(PCIDevice *d, uint32_t address, + uint32_t val, int len) +{ + uint16_t slt_ctl, slt_sta; + + pcie_cap_slot_get(d, &slt_ctl, &slt_sta); + pci_bridge_write_config(d, address, val, len); + pcie_cap_flr_write_config(d, address, val, len); + pcie_cap_slot_write_config(d, slt_ctl, slt_sta, address, val, len); + pcie_aer_write_config(d, address, val, len); +} + +static void xio3130_downstream_reset(DeviceState *qdev) +{ + PCIDevice *d = PCI_DEVICE(qdev); + + pcie_cap_deverr_reset(d); + pcie_cap_slot_reset(d); + pcie_cap_arifwd_reset(d); + pci_bridge_reset(qdev); +} + +static void xio3130_downstream_realize(PCIDevice *d, Error **errp) +{ + PCIEPort *p = PCIE_PORT(d); + PCIESlot *s = PCIE_SLOT(d); + int rc; + + pci_bridge_initfn(d, TYPE_PCIE_BUS); + pcie_port_init_reg(d); + + rc = msi_init(d, XIO3130_MSI_OFFSET, XIO3130_MSI_NR_VECTOR, + XIO3130_MSI_SUPPORTED_FLAGS & PCI_MSI_FLAGS_64BIT, + XIO3130_MSI_SUPPORTED_FLAGS & PCI_MSI_FLAGS_MASKBIT, + errp); + if (rc < 0) { + assert(rc == -ENOTSUP); + goto err_bridge; + } + + rc = pci_bridge_ssvid_init(d, XIO3130_SSVID_OFFSET, + XIO3130_SSVID_SVID, XIO3130_SSVID_SSID, + errp); + if (rc < 0) { + goto err_msi; + } + + rc = pcie_cap_init(d, XIO3130_EXP_OFFSET, PCI_EXP_TYPE_DOWNSTREAM, + p->port, errp); + if (rc < 0) { + goto err_msi; + } + pcie_cap_flr_init(d); + pcie_cap_deverr_init(d); + pcie_cap_slot_init(d, s); + pcie_cap_arifwd_init(d); + + pcie_chassis_create(s->chassis); + rc = pcie_chassis_add_slot(s); + if (rc < 0) { + error_setg(errp, "Can't add chassis slot, error %d", rc); + goto err_pcie_cap; + } + + rc = pcie_aer_init(d, PCI_ERR_VER, XIO3130_AER_OFFSET, + PCI_ERR_SIZEOF, errp); + if (rc < 0) { + goto err; + } + + return; + +err: + pcie_chassis_del_slot(s); +err_pcie_cap: + pcie_cap_exit(d); +err_msi: + msi_uninit(d); +err_bridge: + pci_bridge_exitfn(d); +} + +static void xio3130_downstream_exitfn(PCIDevice *d) +{ + PCIESlot *s = PCIE_SLOT(d); + + pcie_aer_exit(d); + pcie_chassis_del_slot(s); + pcie_cap_exit(d); + msi_uninit(d); + pci_bridge_exitfn(d); +} + +static Property xio3130_downstream_props[] = { + DEFINE_PROP_BIT(COMPAT_PROP_PCP, PCIDevice, cap_present, + QEMU_PCIE_SLTCAP_PCP_BITNR, true), + DEFINE_PROP_END_OF_LIST() +}; + +static const VMStateDescription vmstate_xio3130_downstream = { + .name = "xio3130-express-downstream-port", + .priority = MIG_PRI_PCI_BUS, + .version_id = 1, + .minimum_version_id = 1, + .post_load = pcie_cap_slot_post_load, + .fields = (VMStateField[]) { + VMSTATE_PCI_DEVICE(parent_obj.parent_obj.parent_obj, PCIESlot), + VMSTATE_STRUCT(parent_obj.parent_obj.parent_obj.exp.aer_log, + PCIESlot, 0, vmstate_pcie_aer_log, PCIEAERLog), + VMSTATE_END_OF_LIST() + } +}; + +static void xio3130_downstream_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); + + k->is_bridge = true; + k->config_write = xio3130_downstream_write_config; + k->realize = xio3130_downstream_realize; + k->exit = xio3130_downstream_exitfn; + k->vendor_id = PCI_VENDOR_ID_TI; + k->device_id = PCI_DEVICE_ID_TI_XIO3130D; + k->revision = XIO3130_REVISION; + set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories); + dc->desc = "TI X3130 Downstream Port of PCI Express Switch"; + dc->reset = xio3130_downstream_reset; + dc->vmsd = &vmstate_xio3130_downstream; + device_class_set_props(dc, xio3130_downstream_props); +} + +static const TypeInfo xio3130_downstream_info = { + .name = TYPE_XIO3130_DOWNSTREAM, + .parent = TYPE_PCIE_SLOT, + .class_init = xio3130_downstream_class_init, + .interfaces = (InterfaceInfo[]) { + { INTERFACE_PCIE_DEVICE }, + { } + }, +}; + +static void xio3130_downstream_register_types(void) +{ + type_register_static(&xio3130_downstream_info); +} + +type_init(xio3130_downstream_register_types) diff --git a/hw/pci-bridge/xio3130_upstream.c b/hw/pci-bridge/xio3130_upstream.c new file mode 100644 index 00000000..5ff46ef0 --- /dev/null +++ b/hw/pci-bridge/xio3130_upstream.c @@ -0,0 +1,159 @@ +/* + * xio3130_upstream.c + * TI X3130 pci express upstream port switch + * + * Copyright (c) 2010 Isaku Yamahata <yamahata at valinux co jp> + * VA Linux Systems Japan K.K. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, see <http://www.gnu.org/licenses/>. + */ + +#include "qemu/osdep.h" +#include "hw/pci/pci_ids.h" +#include "hw/pci/msi.h" +#include "hw/pci/pcie.h" +#include "hw/pci/pcie_port.h" +#include "migration/vmstate.h" +#include "qemu/module.h" + +#define PCI_DEVICE_ID_TI_XIO3130U 0x8232 /* upstream port */ +#define XIO3130_REVISION 0x2 +#define XIO3130_MSI_OFFSET 0x70 +#define XIO3130_MSI_SUPPORTED_FLAGS PCI_MSI_FLAGS_64BIT +#define XIO3130_MSI_NR_VECTOR 1 +#define XIO3130_SSVID_OFFSET 0x80 +#define XIO3130_SSVID_SVID 0 +#define XIO3130_SSVID_SSID 0 +#define XIO3130_EXP_OFFSET 0x90 +#define XIO3130_AER_OFFSET 0x100 + +static void xio3130_upstream_write_config(PCIDevice *d, uint32_t address, + uint32_t val, int len) +{ + pci_bridge_write_config(d, address, val, len); + pcie_cap_flr_write_config(d, address, val, len); + pcie_aer_write_config(d, address, val, len); +} + +static void xio3130_upstream_reset(DeviceState *qdev) +{ + PCIDevice *d = PCI_DEVICE(qdev); + + pci_bridge_reset(qdev); + pcie_cap_deverr_reset(d); +} + +static void xio3130_upstream_realize(PCIDevice *d, Error **errp) +{ + PCIEPort *p = PCIE_PORT(d); + int rc; + + pci_bridge_initfn(d, TYPE_PCIE_BUS); + pcie_port_init_reg(d); + + rc = msi_init(d, XIO3130_MSI_OFFSET, XIO3130_MSI_NR_VECTOR, + XIO3130_MSI_SUPPORTED_FLAGS & PCI_MSI_FLAGS_64BIT, + XIO3130_MSI_SUPPORTED_FLAGS & PCI_MSI_FLAGS_MASKBIT, + errp); + if (rc < 0) { + assert(rc == -ENOTSUP); + goto err_bridge; + } + + rc = pci_bridge_ssvid_init(d, XIO3130_SSVID_OFFSET, + XIO3130_SSVID_SVID, XIO3130_SSVID_SSID, + errp); + if (rc < 0) { + goto err_msi; + } + + rc = pcie_cap_init(d, XIO3130_EXP_OFFSET, PCI_EXP_TYPE_UPSTREAM, + p->port, errp); + if (rc < 0) { + goto err_msi; + } + pcie_cap_flr_init(d); + pcie_cap_deverr_init(d); + + rc = pcie_aer_init(d, PCI_ERR_VER, XIO3130_AER_OFFSET, + PCI_ERR_SIZEOF, errp); + if (rc < 0) { + goto err; + } + + return; + +err: + pcie_cap_exit(d); +err_msi: + msi_uninit(d); +err_bridge: + pci_bridge_exitfn(d); +} + +static void xio3130_upstream_exitfn(PCIDevice *d) +{ + pcie_aer_exit(d); + pcie_cap_exit(d); + msi_uninit(d); + pci_bridge_exitfn(d); +} + +static const VMStateDescription vmstate_xio3130_upstream = { + .name = "xio3130-express-upstream-port", + .priority = MIG_PRI_PCI_BUS, + .version_id = 1, + .minimum_version_id = 1, + .fields = (VMStateField[]) { + VMSTATE_PCI_DEVICE(parent_obj.parent_obj, PCIEPort), + VMSTATE_STRUCT(parent_obj.parent_obj.exp.aer_log, PCIEPort, 0, + vmstate_pcie_aer_log, PCIEAERLog), + VMSTATE_END_OF_LIST() + } +}; + +static void xio3130_upstream_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); + + k->is_bridge = true; + k->config_write = xio3130_upstream_write_config; + k->realize = xio3130_upstream_realize; + k->exit = xio3130_upstream_exitfn; + k->vendor_id = PCI_VENDOR_ID_TI; + k->device_id = PCI_DEVICE_ID_TI_XIO3130U; + k->revision = XIO3130_REVISION; + set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories); + dc->desc = "TI X3130 Upstream Port of PCI Express Switch"; + dc->reset = xio3130_upstream_reset; + dc->vmsd = &vmstate_xio3130_upstream; +} + +static const TypeInfo xio3130_upstream_info = { + .name = "x3130-upstream", + .parent = TYPE_PCIE_PORT, + .class_init = xio3130_upstream_class_init, + .interfaces = (InterfaceInfo[]) { + { INTERFACE_PCIE_DEVICE }, + { } + }, +}; + +static void xio3130_upstream_register_types(void) +{ + type_register_static(&xio3130_upstream_info); +} + +type_init(xio3130_upstream_register_types) |