diff options
Diffstat (limited to 'hw/pci-host/aspeed_pcie.c')
| -rw-r--r-- | hw/pci-host/aspeed_pcie.c | 1015 |
1 files changed, 1015 insertions, 0 deletions
diff --git a/hw/pci-host/aspeed_pcie.c b/hw/pci-host/aspeed_pcie.c new file mode 100644 index 0000000000..f7593444fc --- /dev/null +++ b/hw/pci-host/aspeed_pcie.c @@ -0,0 +1,1015 @@ +/* + * ASPEED PCIe Host Controller + * + * Copyright (C) 2025 ASPEED Technology Inc. + * Copyright (c) 2022 Cédric Le Goater <clg@kaod.org> + * + * Authors: + * Cédric Le Goater <clg@kaod.org> + * Jamin Lin <jamin_lin@aspeedtech.com> + * + * SPDX-License-Identifier: GPL-2.0-or-later + * + * Based on previous work from Cédric Le Goater. + * Modifications extend support for the ASPEED AST2600 and AST2700 platforms. + */ + +#include "qemu/osdep.h" +#include "qemu/log.h" +#include "qapi/error.h" +#include "hw/qdev-properties.h" +#include "hw/registerfields.h" +#include "hw/irq.h" +#include "hw/pci/pci_host.h" +#include "hw/pci/pcie_port.h" +#include "hw/pci-host/aspeed_pcie.h" +#include "hw/pci/msi.h" +#include "trace.h" + +/* + * PCIe Root Device + * This device exists only on AST2600. + */ + +static void aspeed_pcie_root_device_class_init(ObjectClass *klass, + const void *data) +{ + PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); + DeviceClass *dc = DEVICE_CLASS(klass); + + set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories); + dc->desc = "ASPEED PCIe Root Device"; + k->vendor_id = PCI_VENDOR_ID_ASPEED; + k->device_id = 0x2600; + k->class_id = PCI_CLASS_BRIDGE_HOST; + k->subsystem_vendor_id = k->vendor_id; + k->subsystem_id = k->device_id; + k->revision = 0; + + /* + * PCI-facing part of the host bridge, + * not usable without the host-facing part + */ + dc->user_creatable = false; +} + +static const TypeInfo aspeed_pcie_root_device_info = { + .name = TYPE_ASPEED_PCIE_ROOT_DEVICE, + .parent = TYPE_PCI_DEVICE, + .instance_size = sizeof(AspeedPCIERootDeviceState), + .class_init = aspeed_pcie_root_device_class_init, + .interfaces = (const InterfaceInfo[]) { + { INTERFACE_CONVENTIONAL_PCI_DEVICE }, + { }, + }, +}; + +/* + * PCIe Root Port + */ + +static void aspeed_pcie_root_port_class_init(ObjectClass *klass, + const void *data) +{ + PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); + DeviceClass *dc = DEVICE_CLASS(klass); + PCIERootPortClass *rpc = PCIE_ROOT_PORT_CLASS(klass); + + dc->desc = "ASPEED PCIe Root Port"; + k->vendor_id = PCI_VENDOR_ID_ASPEED; + k->device_id = 0x1150; + dc->user_creatable = true; + + rpc->aer_offset = 0x100; +} + +static const TypeInfo aspeed_pcie_root_port_info = { + .name = TYPE_ASPEED_PCIE_ROOT_PORT, + .parent = TYPE_PCIE_ROOT_PORT, + .instance_size = sizeof(AspeedPCIERootPortState), + .class_init = aspeed_pcie_root_port_class_init, +}; + +/* + * PCIe Root Complex (RC) + */ + +#define ASPEED_PCIE_CFG_RC_MAX_MSI 64 + +static void aspeed_pcie_rc_set_irq(void *opaque, int irq, int level) +{ + AspeedPCIERcState *rc = (AspeedPCIERcState *) opaque; + AspeedPCIECfgState *cfg = + container_of(rc, AspeedPCIECfgState, rc); + bool intx; + + assert(irq < PCI_NUM_PINS); + + if (level) { + cfg->regs[cfg->rc_regs->int_sts_reg] |= BIT(irq); + } else { + cfg->regs[cfg->rc_regs->int_sts_reg] &= ~BIT(irq); + } + + intx = !!(cfg->regs[cfg->rc_regs->int_sts_reg] & + cfg->regs[cfg->rc_regs->int_en_reg]); + trace_aspeed_pcie_rc_intx_set_irq(cfg->id, irq, intx); + qemu_set_irq(rc->irq, intx); +} + +static int aspeed_pcie_rc_map_irq(PCIDevice *pci_dev, int irq_num) +{ + return irq_num % PCI_NUM_PINS; +} + +static void aspeed_pcie_rc_msi_notify(AspeedPCIERcState *rc, uint64_t data) +{ + AspeedPCIECfgState *cfg = + container_of(rc, AspeedPCIECfgState, rc); + uint32_t reg; + + /* Written data is the HW IRQ number */ + assert(data < ASPEED_PCIE_CFG_RC_MAX_MSI); + + reg = (data < 32) ? + cfg->rc_regs->msi_sts0_reg : cfg->rc_regs->msi_sts1_reg; + cfg->regs[reg] |= BIT(data % 32); + + trace_aspeed_pcie_rc_msi_set_irq(cfg->id, data, 1); + qemu_set_irq(rc->irq, 1); +} + +static void aspeed_pcie_rc_msi_write(void *opaque, hwaddr addr, uint64_t data, + unsigned int size) +{ + AspeedPCIERcState *rc = ASPEED_PCIE_RC(opaque); + AspeedPCIECfgState *cfg = + container_of(rc, AspeedPCIECfgState, rc); + + trace_aspeed_pcie_rc_msi_notify(cfg->id, addr + rc->msi_addr, data); + aspeed_pcie_rc_msi_notify(rc, data); +} + +static const MemoryRegionOps aspeed_pcie_rc_msi_ops = { + .write = aspeed_pcie_rc_msi_write, + .read = NULL, + .endianness = DEVICE_LITTLE_ENDIAN, + .valid = { + .min_access_size = 4, + .max_access_size = 4, + }, + .impl = { + .min_access_size = 4, + .max_access_size = 4, + }, +}; + +static AddressSpace *aspeed_pcie_rc_get_as(PCIBus *bus, void *opaque, int devfn) +{ + AspeedPCIERcState *rc = ASPEED_PCIE_RC(opaque); + return &rc->iommu_as; +} + +static const PCIIOMMUOps aspeed_pcie_rc_iommu_ops = { + .get_address_space = aspeed_pcie_rc_get_as, +}; + +static void aspeed_pcie_rc_realize(DeviceState *dev, Error **errp) +{ + PCIExpressHost *pex = PCIE_HOST_BRIDGE(dev); + AspeedPCIERcState *rc = ASPEED_PCIE_RC(dev); + AspeedPCIECfgState *cfg = + container_of(rc, AspeedPCIECfgState, rc); + PCIHostState *pci = PCI_HOST_BRIDGE(dev); + SysBusDevice *sbd = SYS_BUS_DEVICE(dev); + g_autofree char *ioport_window_name = NULL; + g_autofree char *mmio_window_name = NULL; + g_autofree char *iommu_root_name = NULL; + g_autofree char *dram_alias_name = NULL; + g_autofree char *root_bus_name = NULL; + + /* PCI configuration space */ + pcie_host_mmcfg_init(pex, PCIE_MMCFG_SIZE_MAX); + sysbus_init_mmio(sbd, &pex->mmio); + + /* MMIO and IO region */ + memory_region_init(&rc->mmio, OBJECT(rc), "mmio", UINT64_MAX); + memory_region_init(&rc->io, OBJECT(rc), "io", 0x10000); + + mmio_window_name = g_strdup_printf("pcie.%d.mmio_window", cfg->id); + memory_region_init_io(&rc->mmio_window, OBJECT(rc), &unassigned_io_ops, + OBJECT(rc), mmio_window_name, UINT64_MAX); + ioport_window_name = g_strdup_printf("pcie.%d.ioport_window", cfg->id); + memory_region_init_io(&rc->io_window, OBJECT(rc), &unassigned_io_ops, + OBJECT(rc), ioport_window_name, 0x10000); + + memory_region_add_subregion(&rc->mmio_window, 0, &rc->mmio); + memory_region_add_subregion(&rc->io_window, 0, &rc->io); + sysbus_init_mmio(sbd, &rc->mmio_window); + sysbus_init_mmio(sbd, &rc->io_window); + + sysbus_init_irq(sbd, &rc->irq); + root_bus_name = g_strdup_printf("pcie.rc%d", cfg->id); + pci->bus = pci_register_root_bus(dev, root_bus_name, + aspeed_pcie_rc_set_irq, + aspeed_pcie_rc_map_irq, rc, &rc->mmio, + &rc->io, 0, 4, TYPE_PCIE_BUS); + pci->bus->flags |= PCI_BUS_EXTENDED_CONFIG_SPACE; + + /* + * PCIe memory view setup + * + * Background: + * - On AST2700, all Root Complexes use the same MSI address. This MSI + * address is not normal system RAM - it is a PCI system memory address. + * If we map the MSI/MSI-X window into real system memory, a write from + * one EP can be seen by all RCs and wrongly trigger interrupts on them. + * + * Design: + * - MSI/MSI-X here is just a placeholder address so RC and EP can talk. + * We make a separate MMIO space (iommu_root) for the MSI window so the + * writes stay local to each RC. + * + * DMA: + * - EPs still need access to real system memory for DMA. We add a DRAM + * alias in the PCI space so DMA works as expected. + */ + iommu_root_name = g_strdup_printf("pcie.%d.iommu_root", cfg->id); + memory_region_init(&rc->iommu_root, OBJECT(rc), iommu_root_name, + UINT64_MAX); + address_space_init(&rc->iommu_as, &rc->iommu_root, iommu_root_name); + /* setup MSI */ + memory_region_init_io(&rc->msi_window, OBJECT(rc), + &aspeed_pcie_rc_msi_ops, rc, + "msi_window", 4); + memory_region_add_subregion(&rc->iommu_root, rc->msi_addr, + &rc->msi_window); + /* setup DRAM for DMA */ + assert(rc->dram_mr != NULL); + dram_alias_name = g_strdup_printf("pcie.%d.dram_alias", cfg->id); + memory_region_init_alias(&rc->dram_alias, OBJECT(rc), dram_alias_name, + rc->dram_mr, 0, memory_region_size(rc->dram_mr)); + memory_region_add_subregion(&rc->iommu_root, rc->dram_base, + &rc->dram_alias); + pci_setup_iommu(pci->bus, &aspeed_pcie_rc_iommu_ops, rc); + + /* setup root device */ + if (rc->has_rd) { + object_initialize_child(OBJECT(rc), "root_device", &rc->root_device, + TYPE_ASPEED_PCIE_ROOT_DEVICE); + qdev_prop_set_int32(DEVICE(&rc->root_device), "addr", + PCI_DEVFN(0, 0)); + qdev_prop_set_bit(DEVICE(&rc->root_device), "multifunction", false); + if (!qdev_realize(DEVICE(&rc->root_device), BUS(pci->bus), errp)) { + return; + } + } + + /* setup root port */ + qdev_prop_set_int32(DEVICE(&rc->root_port), "addr", rc->rp_addr); + qdev_prop_set_uint16(DEVICE(&rc->root_port), "chassis", cfg->id); + if (!qdev_realize(DEVICE(&rc->root_port), BUS(pci->bus), errp)) { + return; + } +} + +static const char *aspeed_pcie_rc_root_bus_path(PCIHostState *host_bridge, + PCIBus *rootbus) +{ + AspeedPCIERcState *rc = ASPEED_PCIE_RC(host_bridge); + AspeedPCIECfgState *cfg = + container_of(rc, AspeedPCIECfgState, rc); + + snprintf(rc->name, sizeof(rc->name), "%04x:%02x", cfg->id, rc->bus_nr); + + return rc->name; +} + +static void aspeed_pcie_rc_instance_init(Object *obj) +{ + AspeedPCIERcState *rc = ASPEED_PCIE_RC(obj); + AspeedPCIERootPortState *root_port = &rc->root_port; + + object_initialize_child(obj, "root_port", root_port, + TYPE_ASPEED_PCIE_ROOT_PORT); +} + +static const Property aspeed_pcie_rc_props[] = { + DEFINE_PROP_UINT32("bus-nr", AspeedPCIERcState, bus_nr, 0), + DEFINE_PROP_BOOL("has-rd", AspeedPCIERcState, has_rd, 0), + DEFINE_PROP_UINT32("rp-addr", AspeedPCIERcState, rp_addr, 0), + DEFINE_PROP_UINT32("msi-addr", AspeedPCIERcState, msi_addr, 0), + DEFINE_PROP_UINT64("dram-base", AspeedPCIERcState, dram_base, 0), + DEFINE_PROP_LINK("dram", AspeedPCIERcState, dram_mr, TYPE_MEMORY_REGION, + MemoryRegion *), +}; + +static void aspeed_pcie_rc_class_init(ObjectClass *klass, const void *data) +{ + PCIHostBridgeClass *hc = PCI_HOST_BRIDGE_CLASS(klass); + DeviceClass *dc = DEVICE_CLASS(klass); + + dc->desc = "ASPEED PCIe RC"; + dc->realize = aspeed_pcie_rc_realize; + dc->fw_name = "pci"; + set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories); + + hc->root_bus_path = aspeed_pcie_rc_root_bus_path; + device_class_set_props(dc, aspeed_pcie_rc_props); + + msi_nonbroken = true; +} + +static const TypeInfo aspeed_pcie_rc_info = { + .name = TYPE_ASPEED_PCIE_RC, + .parent = TYPE_PCIE_HOST_BRIDGE, + .instance_size = sizeof(AspeedPCIERcState), + .instance_init = aspeed_pcie_rc_instance_init, + .class_init = aspeed_pcie_rc_class_init, +}; + +/* + * PCIe Config + * + * AHB to PCIe Bus Bridge (H2X) + * + * On the AST2600: + * NOTE: rc_l is not supported by this model. + * - Registers 0x00 - 0x7F are shared by both PCIe0 (rc_l) and PCIe1 (rc_h). + * - Registers 0x80 - 0xBF are specific to PCIe0. + * - Registers 0xC0 - 0xFF are specific to PCIe1. + * + * On the AST2700: + * - The register range 0x00 - 0xFF is assigned to a single PCIe configuration. + * - There are three PCIe Root Complexes (RCs), each with its own dedicated H2X + * register set of size 0x100 (covering offsets 0x00 to 0xFF). + */ + +/* AST2600 */ +REG32(H2X_CTRL, 0x00) + FIELD(H2X_CTRL, CLEAR_RX, 4, 1) +REG32(H2X_TX_CLEAR, 0x08) + FIELD(H2X_TX_CLEAR, IDLE, 0, 1) +REG32(H2X_RDATA, 0x0C) +REG32(H2X_TX_DESC0, 0x10) +REG32(H2X_TX_DESC1, 0x14) +REG32(H2X_TX_DESC2, 0x18) +REG32(H2X_TX_DESC3, 0x1C) +REG32(H2X_TX_DATA, 0x20) +REG32(H2X_TX_STS, 0x24) + FIELD(H2X_TX_STS, IDLE, 31, 1) + FIELD(H2X_TX_STS, RC_L_TX_COMP, 24, 1) + FIELD(H2X_TX_STS, RC_H_TX_COMP, 25, 1) + FIELD(H2X_TX_STS, TRIG, 0, 1) +REG32(H2X_RC_H_CTRL, 0xC0) +REG32(H2X_RC_H_INT_EN, 0xC4) +REG32(H2X_RC_H_INT_STS, 0xC8) + SHARED_FIELD(H2X_RC_INT_INTDONE, 4, 1) + SHARED_FIELD(H2X_RC_INT_INTX, 0, 4) +REG32(H2X_RC_H_RDATA, 0xCC) +REG32(H2X_RC_H_MSI_EN0, 0xE0) +REG32(H2X_RC_H_MSI_EN1, 0xE4) +REG32(H2X_RC_H_MSI_STS0, 0xE8) +REG32(H2X_RC_H_MSI_STS1, 0xEC) + +/* AST2700 */ +REG32(H2X_CFGE_INT_STS, 0x08) + FIELD(H2X_CFGE_INT_STS, TX_IDEL, 0, 1) + FIELD(H2X_CFGE_INT_STS, RX_BUSY, 1, 1) +REG32(H2X_CFGI_TLP, 0x20) + FIELD(H2X_CFGI_TLP, ADDR, 0, 16) + FIELD(H2X_CFGI_TLP, BEN, 16, 4) + FIELD(H2X_CFGI_TLP, WR, 20, 1) +REG32(H2X_CFGI_WDATA, 0x24) +REG32(H2X_CFGI_CTRL, 0x28) + FIELD(H2X_CFGI_CTRL, FIRE, 0, 1) +REG32(H2X_CFGI_RDATA, 0x2C) +REG32(H2X_CFGE_TLP1, 0x30) +REG32(H2X_CFGE_TLPN, 0x34) +REG32(H2X_CFGE_CTRL, 0x38) + FIELD(H2X_CFGE_CTRL, FIRE, 0, 1) +REG32(H2X_CFGE_RDATA, 0x3C) +REG32(H2X_INT_EN, 0x40) +REG32(H2X_INT_STS, 0x48) + FIELD(H2X_INT_STS, INTX, 0, 4) +REG32(H2X_MSI_EN0, 0x50) +REG32(H2X_MSI_EN1, 0x54) +REG32(H2X_MSI_STS0, 0x58) +REG32(H2X_MSI_STS1, 0x5C) + +#define TLP_FMTTYPE_CFGRD0 0x04 /* Configuration Read Type 0 */ +#define TLP_FMTTYPE_CFGWR0 0x44 /* Configuration Write Type 0 */ +#define TLP_FMTTYPE_CFGRD1 0x05 /* Configuration Read Type 1 */ +#define TLP_FMTTYPE_CFGWR1 0x45 /* Configuration Write Type 1 */ + +#define PCIE_CFG_FMTTYPE_MASK(x) (((x) >> 24) & 0xff) +#define PCIE_CFG_BYTE_EN(x) ((x) & 0xf) + +static const AspeedPCIERegMap aspeed_regmap = { + .rc = { + .int_en_reg = R_H2X_RC_H_INT_EN, + .int_sts_reg = R_H2X_RC_H_INT_STS, + .msi_sts0_reg = R_H2X_RC_H_MSI_STS0, + .msi_sts1_reg = R_H2X_RC_H_MSI_STS1, + }, +}; + +static const AspeedPCIERegMap aspeed_2700_regmap = { + .rc = { + .int_en_reg = R_H2X_INT_EN, + .int_sts_reg = R_H2X_INT_STS, + .msi_sts0_reg = R_H2X_MSI_STS0, + .msi_sts1_reg = R_H2X_MSI_STS1, + }, +}; + +static uint64_t aspeed_pcie_cfg_read(void *opaque, hwaddr addr, + unsigned int size) +{ + AspeedPCIECfgState *s = ASPEED_PCIE_CFG(opaque); + uint32_t reg = addr >> 2; + uint32_t value = 0; + + value = s->regs[reg]; + + trace_aspeed_pcie_cfg_read(s->id, addr, value); + + return value; +} + +static void aspeed_pcie_cfg_translate_write(uint8_t byte_en, uint32_t *addr, + uint64_t *val, int *len) +{ + uint64_t packed_val = 0; + int first_bit = -1; + int index = 0; + int i; + + *len = ctpop8(byte_en); + + if (*len == 0 || *len > 4) { + qemu_log_mask(LOG_GUEST_ERROR, "%s: invalid byte enable: 0x%x\n", + __func__, byte_en); + return; + } + + /* Special case: full 4-byte write must be 4-byte aligned */ + if (byte_en == 0x0f) { + if ((*addr & 0x3) != 0) { + qemu_log_mask(LOG_GUEST_ERROR, + "%s: 4-byte write not 4-byte aligned: addr=0x%x\n", + __func__, *addr); + return; + } + *val &= 0xffffffffULL; + return; + } + + for (i = 0; i < 4; i++) { + if (byte_en & (1 << i)) { + if (first_bit < 0) { + first_bit = i; + } + packed_val |= ((*val >> (i * 8)) & 0xff) << (index * 8); + index++; + } + } + + *addr += first_bit; + *val = packed_val; +} + +static void aspeed_pcie_cfg_readwrite(AspeedPCIECfgState *s, + const AspeedPCIECfgTxDesc *desc) +{ + AspeedPCIERcState *rc = &s->rc; + PCIHostState *pci = NULL; + PCIDevice *pdev = NULL; + uint32_t cfg_addr; + uint32_t offset; + uint8_t byte_en; + bool is_write; + uint8_t devfn; + uint64_t val; + uint8_t bus; + int len; + + val = ~0; + is_write = !!(desc->desc0 & BIT(30)); + cfg_addr = desc->desc2; + + bus = (cfg_addr >> 24) & 0xff; + devfn = (cfg_addr >> 16) & 0xff; + offset = cfg_addr & 0xffc; + + pci = PCI_HOST_BRIDGE(rc); + + /* + * On the AST2600, the RC_H bus number range from 0x80 to 0xFF, with the + * root device and root port assigned to bus 0x80 instead of the standard + * 0x00. To allow the PCI subsystem to correctly discover devices on the + * root bus, bus 0x80 is remapped to 0x00. + */ + if (bus == rc->bus_nr) { + bus = 0; + } + + pdev = pci_find_device(pci->bus, bus, devfn); + if (!pdev) { + s->regs[desc->rdata_reg] = ~0; + goto out; + } + + switch (PCIE_CFG_FMTTYPE_MASK(desc->desc0)) { + case TLP_FMTTYPE_CFGWR0: + case TLP_FMTTYPE_CFGWR1: + byte_en = PCIE_CFG_BYTE_EN(desc->desc1); + val = desc->wdata; + aspeed_pcie_cfg_translate_write(byte_en, &offset, &val, &len); + pci_host_config_write_common(pdev, offset, pci_config_size(pdev), + val, len); + break; + case TLP_FMTTYPE_CFGRD0: + case TLP_FMTTYPE_CFGRD1: + val = pci_host_config_read_common(pdev, offset, + pci_config_size(pdev), 4); + s->regs[desc->rdata_reg] = val; + break; + default: + qemu_log_mask(LOG_GUEST_ERROR, "%s: invalid CFG type. DESC0=0x%x\n", + __func__, desc->desc0); + } + +out: + trace_aspeed_pcie_cfg_rw(s->id, is_write ? "write" : "read", bus, devfn, + cfg_addr, val); +} + +static void aspeed_pcie_cfg_write(void *opaque, hwaddr addr, uint64_t data, + unsigned int size) +{ + AspeedPCIECfgState *s = ASPEED_PCIE_CFG(opaque); + AspeedPCIECfgTxDesc desc; + uint32_t reg = addr >> 2; + uint32_t rc_reg; + + trace_aspeed_pcie_cfg_write(s->id, addr, data); + + switch (reg) { + case R_H2X_CTRL: + if (data & R_H2X_CTRL_CLEAR_RX_MASK) { + s->regs[R_H2X_RDATA] = ~0; + } + break; + case R_H2X_TX_CLEAR: + if (data & R_H2X_TX_CLEAR_IDLE_MASK) { + s->regs[R_H2X_TX_STS] &= ~R_H2X_TX_STS_IDLE_MASK; + } + break; + case R_H2X_TX_STS: + if (data & R_H2X_TX_STS_TRIG_MASK) { + desc.desc0 = s->regs[R_H2X_TX_DESC0]; + desc.desc1 = s->regs[R_H2X_TX_DESC1]; + desc.desc2 = s->regs[R_H2X_TX_DESC2]; + desc.desc3 = s->regs[R_H2X_TX_DESC3]; + desc.wdata = s->regs[R_H2X_TX_DATA]; + desc.rdata_reg = R_H2X_RC_H_RDATA; + aspeed_pcie_cfg_readwrite(s, &desc); + rc_reg = s->rc_regs->int_sts_reg; + s->regs[rc_reg] |= H2X_RC_INT_INTDONE_MASK; + s->regs[R_H2X_TX_STS] |= + BIT(R_H2X_TX_STS_RC_H_TX_COMP_SHIFT); + s->regs[R_H2X_TX_STS] |= R_H2X_TX_STS_IDLE_MASK; + } + break; + /* preserve INTx status */ + case R_H2X_RC_H_INT_STS: + if (data & H2X_RC_INT_INTDONE_MASK) { + s->regs[R_H2X_TX_STS] &= ~R_H2X_TX_STS_RC_H_TX_COMP_MASK; + } + s->regs[reg] &= ~data | H2X_RC_INT_INTX_MASK; + break; + /* + * These status registers are used for notify sources ISR are executed. + * If one source ISR is executed, it will clear one bit. + * If it clear all bits, it means to initialize this register status + * rather than sources ISR are executed. + */ + case R_H2X_RC_H_MSI_STS0: + case R_H2X_RC_H_MSI_STS1: + if (data == 0) { + return ; + } + + s->regs[reg] &= ~data; + if (data == 0xffffffff) { + return; + } + + if (!s->regs[R_H2X_RC_H_MSI_STS0] && + !s->regs[R_H2X_RC_H_MSI_STS1]) { + trace_aspeed_pcie_rc_msi_clear_irq(s->id, 0); + qemu_set_irq(s->rc.irq, 0); + } + break; + default: + s->regs[reg] = data; + break; + } +} + +static const MemoryRegionOps aspeed_pcie_cfg_ops = { + .read = aspeed_pcie_cfg_read, + .write = aspeed_pcie_cfg_write, + .endianness = DEVICE_LITTLE_ENDIAN, + .valid = { + .min_access_size = 1, + .max_access_size = 4, + }, +}; + +static void aspeed_pcie_cfg_instance_init(Object *obj) +{ + AspeedPCIECfgState *s = ASPEED_PCIE_CFG(obj); + + object_initialize_child(obj, "rc", &s->rc, TYPE_ASPEED_PCIE_RC); + object_property_add_alias(obj, "dram", OBJECT(&s->rc), "dram"); + object_property_add_alias(obj, "dram-base", OBJECT(&s->rc), "dram-base"); + + return; +} + +static void aspeed_pcie_cfg_reset(DeviceState *dev) +{ + AspeedPCIECfgState *s = ASPEED_PCIE_CFG(dev); + AspeedPCIECfgClass *apc = ASPEED_PCIE_CFG_GET_CLASS(s); + + memset(s->regs, 0, apc->nr_regs << 2); + memset(s->tlpn_fifo, 0, sizeof(s->tlpn_fifo)); + s->tlpn_idx = 0; +} + +static void aspeed_pcie_cfg_realize(DeviceState *dev, Error **errp) +{ + SysBusDevice *sbd = SYS_BUS_DEVICE(dev); + AspeedPCIECfgState *s = ASPEED_PCIE_CFG(dev); + AspeedPCIECfgClass *apc = ASPEED_PCIE_CFG_GET_CLASS(s); + g_autofree char *name = NULL; + + s->rc_regs = &apc->reg_map->rc; + s->regs = g_new(uint32_t, apc->nr_regs); + name = g_strdup_printf(TYPE_ASPEED_PCIE_CFG ".regs.%d", s->id); + memory_region_init_io(&s->mmio, OBJECT(s), apc->reg_ops, s, name, + apc->nr_regs << 2); + sysbus_init_mmio(sbd, &s->mmio); + + object_property_set_int(OBJECT(&s->rc), "bus-nr", + apc->rc_bus_nr, + &error_abort); + object_property_set_bool(OBJECT(&s->rc), "has-rd", + apc->rc_has_rd, + &error_abort); + object_property_set_int(OBJECT(&s->rc), "rp-addr", + apc->rc_rp_addr, + &error_abort); + object_property_set_int(OBJECT(&s->rc), "msi-addr", + apc->rc_msi_addr, + &error_abort); + if (!sysbus_realize(SYS_BUS_DEVICE(&s->rc), errp)) { + return; + } +} + +static void aspeed_pcie_cfg_unrealize(DeviceState *dev) +{ + AspeedPCIECfgState *s = ASPEED_PCIE_CFG(dev); + + g_free(s->regs); + s->regs = NULL; +} + +static const Property aspeed_pcie_cfg_props[] = { + DEFINE_PROP_UINT32("id", AspeedPCIECfgState, id, 0), +}; + +static void aspeed_pcie_cfg_class_init(ObjectClass *klass, const void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + AspeedPCIECfgClass *apc = ASPEED_PCIE_CFG_CLASS(klass); + + dc->desc = "ASPEED PCIe Config"; + dc->realize = aspeed_pcie_cfg_realize; + dc->unrealize = aspeed_pcie_cfg_unrealize; + device_class_set_legacy_reset(dc, aspeed_pcie_cfg_reset); + device_class_set_props(dc, aspeed_pcie_cfg_props); + + apc->reg_ops = &aspeed_pcie_cfg_ops; + apc->reg_map = &aspeed_regmap; + apc->nr_regs = 0x100 >> 2; + apc->rc_msi_addr = 0x1e77005C; + apc->rc_bus_nr = 0x80; + apc->rc_has_rd = true; + apc->rc_rp_addr = PCI_DEVFN(8, 0); +} + +static const TypeInfo aspeed_pcie_cfg_info = { + .name = TYPE_ASPEED_PCIE_CFG, + .parent = TYPE_SYS_BUS_DEVICE, + .instance_init = aspeed_pcie_cfg_instance_init, + .instance_size = sizeof(AspeedPCIECfgState), + .class_init = aspeed_pcie_cfg_class_init, + .class_size = sizeof(AspeedPCIECfgClass), +}; + +static void aspeed_2700_pcie_cfg_write(void *opaque, hwaddr addr, + uint64_t data, unsigned int size) +{ + AspeedPCIECfgState *s = ASPEED_PCIE_CFG(opaque); + AspeedPCIECfgTxDesc desc; + uint32_t reg = addr >> 2; + + trace_aspeed_pcie_cfg_write(s->id, addr, data); + + switch (reg) { + case R_H2X_CFGE_INT_STS: + if (data & R_H2X_CFGE_INT_STS_TX_IDEL_MASK) { + s->regs[R_H2X_CFGE_INT_STS] &= ~R_H2X_CFGE_INT_STS_TX_IDEL_MASK; + } + + if (data & R_H2X_CFGE_INT_STS_RX_BUSY_MASK) { + s->regs[R_H2X_CFGE_INT_STS] &= ~R_H2X_CFGE_INT_STS_RX_BUSY_MASK; + } + break; + case R_H2X_CFGI_CTRL: + if (data & R_H2X_CFGI_CTRL_FIRE_MASK) { + /* + * Internal access to bridge + * Type and BDF are 0 + */ + desc.desc0 = 0x04000001 | + (ARRAY_FIELD_EX32(s->regs, H2X_CFGI_TLP, WR) << 30); + desc.desc1 = 0x00401000 | + ARRAY_FIELD_EX32(s->regs, H2X_CFGI_TLP, BEN); + desc.desc2 = 0x00000000 | + ARRAY_FIELD_EX32(s->regs, H2X_CFGI_TLP, ADDR); + desc.wdata = s->regs[R_H2X_CFGI_WDATA]; + desc.rdata_reg = R_H2X_CFGI_RDATA; + aspeed_pcie_cfg_readwrite(s, &desc); + } + break; + case R_H2X_CFGE_TLPN: + s->tlpn_fifo[s->tlpn_idx] = data; + s->tlpn_idx = (s->tlpn_idx + 1) % ARRAY_SIZE(s->tlpn_fifo); + break; + case R_H2X_CFGE_CTRL: + if (data & R_H2X_CFGE_CTRL_FIRE_MASK) { + desc.desc0 = s->regs[R_H2X_CFGE_TLP1]; + desc.desc1 = s->tlpn_fifo[0]; + desc.desc2 = s->tlpn_fifo[1]; + desc.wdata = s->tlpn_fifo[2]; + desc.rdata_reg = R_H2X_CFGE_RDATA; + aspeed_pcie_cfg_readwrite(s, &desc); + s->regs[R_H2X_CFGE_INT_STS] |= R_H2X_CFGE_INT_STS_TX_IDEL_MASK; + s->regs[R_H2X_CFGE_INT_STS] |= R_H2X_CFGE_INT_STS_RX_BUSY_MASK; + s->tlpn_idx = 0; + } + break; + + case R_H2X_INT_STS: + s->regs[reg] &= ~data | R_H2X_INT_STS_INTX_MASK; + break; + /* + * These status registers are used for notify sources ISR are executed. + * If one source ISR is executed, it will clear one bit. + * If it clear all bits, it means to initialize this register status + * rather than sources ISR are executed. + */ + case R_H2X_MSI_STS0: + case R_H2X_MSI_STS1: + if (data == 0) { + return ; + } + + s->regs[reg] &= ~data; + if (data == 0xffffffff) { + return; + } + + if (!s->regs[R_H2X_MSI_STS0] && + !s->regs[R_H2X_MSI_STS1]) { + trace_aspeed_pcie_rc_msi_clear_irq(s->id, 0); + qemu_set_irq(s->rc.irq, 0); + } + break; + default: + s->regs[reg] = data; + break; + } +} + +static const MemoryRegionOps aspeed_2700_pcie_cfg_ops = { + .read = aspeed_pcie_cfg_read, + .write = aspeed_2700_pcie_cfg_write, + .endianness = DEVICE_LITTLE_ENDIAN, + .valid = { + .min_access_size = 1, + .max_access_size = 4, + }, +}; + +static void aspeed_2700_pcie_cfg_class_init(ObjectClass *klass, + const void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + AspeedPCIECfgClass *apc = ASPEED_PCIE_CFG_CLASS(klass); + + dc->desc = "ASPEED 2700 PCIe Config"; + apc->reg_ops = &aspeed_2700_pcie_cfg_ops; + apc->reg_map = &aspeed_2700_regmap; + apc->nr_regs = 0x100 >> 2; + apc->rc_msi_addr = 0x000000F0; + apc->rc_bus_nr = 0; + apc->rc_has_rd = false; + apc->rc_rp_addr = PCI_DEVFN(0, 0); +} + +static const TypeInfo aspeed_2700_pcie_cfg_info = { + .name = TYPE_ASPEED_2700_PCIE_CFG, + .parent = TYPE_ASPEED_PCIE_CFG, + .class_init = aspeed_2700_pcie_cfg_class_init, +}; + +/* + * PCIe PHY + * + * PCIe Host Controller (PCIEH) + */ + +/* AST2600 */ +REG32(PEHR_ID, 0x00) + FIELD(PEHR_ID, DEV, 16, 16) +REG32(PEHR_CLASS_CODE, 0x04) +REG32(PEHR_DATALINK, 0x10) +REG32(PEHR_PROTECT, 0x7C) + FIELD(PEHR_PROTECT, LOCK, 0, 8) +REG32(PEHR_LINK, 0xC0) + FIELD(PEHR_LINK, STS, 5, 1) + +/* AST2700 */ +REG32(PEHR_2700_LINK_GEN2, 0x344) + FIELD(PEHR_2700_LINK_GEN2, STS, 18, 1) +REG32(PEHR_2700_LINK_GEN4, 0x358) + FIELD(PEHR_2700_LINK_GEN4, STS, 8, 1) + +#define ASPEED_PCIE_PHY_UNLOCK 0xA8 + +static uint64_t aspeed_pcie_phy_read(void *opaque, hwaddr addr, + unsigned int size) +{ + AspeedPCIEPhyState *s = ASPEED_PCIE_PHY(opaque); + uint32_t reg = addr >> 2; + uint32_t value = 0; + + value = s->regs[reg]; + + trace_aspeed_pcie_phy_read(s->id, addr, value); + + return value; +} + +static void aspeed_pcie_phy_write(void *opaque, hwaddr addr, uint64_t data, + unsigned int size) +{ + AspeedPCIEPhyState *s = ASPEED_PCIE_PHY(opaque); + uint32_t reg = addr >> 2; + + trace_aspeed_pcie_phy_write(s->id, addr, data); + + switch (reg) { + case R_PEHR_PROTECT: + data &= R_PEHR_PROTECT_LOCK_MASK; + s->regs[reg] = !!(data == ASPEED_PCIE_PHY_UNLOCK); + break; + default: + s->regs[reg] = data; + break; + } +} + +static const MemoryRegionOps aspeed_pcie_phy_ops = { + .read = aspeed_pcie_phy_read, + .write = aspeed_pcie_phy_write, + .endianness = DEVICE_LITTLE_ENDIAN, + .valid = { + .min_access_size = 1, + .max_access_size = 4, + }, +}; + +static void aspeed_pcie_phy_reset(DeviceState *dev) +{ + AspeedPCIEPhyState *s = ASPEED_PCIE_PHY(dev); + AspeedPCIEPhyClass *apc = ASPEED_PCIE_PHY_GET_CLASS(s); + + memset(s->regs, 0, apc->nr_regs << 2); + + s->regs[R_PEHR_ID] = + (0x1150 << R_PEHR_ID_DEV_SHIFT) | PCI_VENDOR_ID_ASPEED; + s->regs[R_PEHR_CLASS_CODE] = 0x06040006; + s->regs[R_PEHR_DATALINK] = 0xD7040022; + s->regs[R_PEHR_LINK] = R_PEHR_LINK_STS_MASK; +} + +static void aspeed_pcie_phy_realize(DeviceState *dev, Error **errp) +{ + AspeedPCIEPhyState *s = ASPEED_PCIE_PHY(dev); + AspeedPCIEPhyClass *apc = ASPEED_PCIE_PHY_GET_CLASS(s); + SysBusDevice *sbd = SYS_BUS_DEVICE(dev); + g_autofree char *name = NULL; + + s->regs = g_new(uint32_t, apc->nr_regs); + name = g_strdup_printf(TYPE_ASPEED_PCIE_PHY ".regs.%d", s->id); + memory_region_init_io(&s->mmio, OBJECT(s), &aspeed_pcie_phy_ops, s, name, + apc->nr_regs << 2); + sysbus_init_mmio(sbd, &s->mmio); +} + +static void aspeed_pcie_phy_unrealize(DeviceState *dev) +{ + AspeedPCIEPhyState *s = ASPEED_PCIE_PHY(dev); + + g_free(s->regs); + s->regs = NULL; +} + +static const Property aspeed_pcie_phy_props[] = { + DEFINE_PROP_UINT32("id", AspeedPCIEPhyState, id, 0), +}; + +static void aspeed_pcie_phy_class_init(ObjectClass *klass, const void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + AspeedPCIEPhyClass *apc = ASPEED_PCIE_PHY_CLASS(klass); + + dc->desc = "ASPEED PCIe Phy"; + dc->realize = aspeed_pcie_phy_realize; + dc->unrealize = aspeed_pcie_phy_unrealize; + device_class_set_legacy_reset(dc, aspeed_pcie_phy_reset); + device_class_set_props(dc, aspeed_pcie_phy_props); + + apc->nr_regs = 0x100 >> 2; +} + +static const TypeInfo aspeed_pcie_phy_info = { + .name = TYPE_ASPEED_PCIE_PHY, + .parent = TYPE_SYS_BUS_DEVICE, + .instance_size = sizeof(AspeedPCIEPhyState), + .class_init = aspeed_pcie_phy_class_init, + .class_size = sizeof(AspeedPCIEPhyClass), +}; + +static void aspeed_2700_pcie_phy_reset(DeviceState *dev) +{ + AspeedPCIEPhyState *s = ASPEED_PCIE_PHY(dev); + AspeedPCIEPhyClass *apc = ASPEED_PCIE_PHY_GET_CLASS(s); + + memset(s->regs, 0, apc->nr_regs << 2); + + s->regs[R_PEHR_ID] = + (0x1150 << R_PEHR_ID_DEV_SHIFT) | PCI_VENDOR_ID_ASPEED; + s->regs[R_PEHR_CLASS_CODE] = 0x06040011; + s->regs[R_PEHR_2700_LINK_GEN2] = R_PEHR_2700_LINK_GEN2_STS_MASK; + s->regs[R_PEHR_2700_LINK_GEN4] = R_PEHR_2700_LINK_GEN4_STS_MASK; +} + +static void aspeed_2700_pcie_phy_class_init(ObjectClass *klass, + const void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + AspeedPCIEPhyClass *apc = ASPEED_PCIE_PHY_CLASS(klass); + + dc->desc = "ASPEED AST2700 PCIe Phy"; + device_class_set_legacy_reset(dc, aspeed_2700_pcie_phy_reset); + + apc->nr_regs = 0x800 >> 2; +} + +static const TypeInfo aspeed_2700_pcie_phy_info = { + .name = TYPE_ASPEED_2700_PCIE_PHY, + .parent = TYPE_ASPEED_PCIE_PHY, + .class_init = aspeed_2700_pcie_phy_class_init, +}; + +static void aspeed_pcie_register_types(void) +{ + type_register_static(&aspeed_pcie_rc_info); + type_register_static(&aspeed_pcie_root_device_info); + type_register_static(&aspeed_pcie_root_port_info); + type_register_static(&aspeed_pcie_cfg_info); + type_register_static(&aspeed_2700_pcie_cfg_info); + type_register_static(&aspeed_pcie_phy_info); + type_register_static(&aspeed_2700_pcie_phy_info); +} + +type_init(aspeed_pcie_register_types); + |