diff options
Diffstat (limited to 'src/hw/pci-host/apb.c')
| -rw-r--r-- | src/hw/pci-host/apb.c | 875 |
1 files changed, 875 insertions, 0 deletions
diff --git a/src/hw/pci-host/apb.c b/src/hw/pci-host/apb.c new file mode 100644 index 0000000..599768e --- /dev/null +++ b/src/hw/pci-host/apb.c @@ -0,0 +1,875 @@ +/* + * QEMU Ultrasparc APB PCI host + * + * Copyright (c) 2006 Fabrice Bellard + * Copyright (c) 2012,2013 Artyom Tarasenko + * + * 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. + */ + +/* XXX This file and most of its contents are somewhat misnamed. The + Ultrasparc PCI host is called the PCI Bus Module (PBM). The APB is + the secondary PCI bridge. */ + +#include "hw/sysbus.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 "hw/pci-host/apb.h" +#include "sysemu/sysemu.h" +#include "exec/address-spaces.h" + +/* debug APB */ +//#define DEBUG_APB + +#ifdef DEBUG_APB +#define APB_DPRINTF(fmt, ...) \ +do { printf("APB: " fmt , ## __VA_ARGS__); } while (0) +#else +#define APB_DPRINTF(fmt, ...) +#endif + +/* debug IOMMU */ +//#define DEBUG_IOMMU + +#ifdef DEBUG_IOMMU +#define IOMMU_DPRINTF(fmt, ...) \ +do { printf("IOMMU: " fmt , ## __VA_ARGS__); } while (0) +#else +#define IOMMU_DPRINTF(fmt, ...) +#endif + +/* + * Chipset docs: + * PBM: "UltraSPARC IIi User's Manual", + * http://www.sun.com/processors/manuals/805-0087.pdf + * + * APB: "Advanced PCI Bridge (APB) User's Manual", + * http://www.sun.com/processors/manuals/805-1251.pdf + */ + +#define PBM_PCI_IMR_MASK 0x7fffffff +#define PBM_PCI_IMR_ENABLED 0x80000000 + +#define POR (1U << 31) +#define SOFT_POR (1U << 30) +#define SOFT_XIR (1U << 29) +#define BTN_POR (1U << 28) +#define BTN_XIR (1U << 27) +#define RESET_MASK 0xf8000000 +#define RESET_WCMASK 0x98000000 +#define RESET_WMASK 0x60000000 + +#define MAX_IVEC 0x40 +#define NO_IRQ_REQUEST (MAX_IVEC + 1) + +#define IOMMU_PAGE_SIZE_8K (1ULL << 13) +#define IOMMU_PAGE_MASK_8K (~(IOMMU_PAGE_SIZE_8K - 1)) +#define IOMMU_PAGE_SIZE_64K (1ULL << 16) +#define IOMMU_PAGE_MASK_64K (~(IOMMU_PAGE_SIZE_64K - 1)) + +#define IOMMU_NREGS 3 + +#define IOMMU_CTRL 0x0 +#define IOMMU_CTRL_TBW_SIZE (1ULL << 2) +#define IOMMU_CTRL_MMU_EN (1ULL) + +#define IOMMU_CTRL_TSB_SHIFT 16 + +#define IOMMU_BASE 0x8 +#define IOMMU_FLUSH 0x10 + +#define IOMMU_TTE_DATA_V (1ULL << 63) +#define IOMMU_TTE_DATA_SIZE (1ULL << 61) +#define IOMMU_TTE_DATA_W (1ULL << 1) + +#define IOMMU_TTE_PHYS_MASK_8K 0x1ffffffe000ULL +#define IOMMU_TTE_PHYS_MASK_64K 0x1ffffff8000ULL + +#define IOMMU_TSB_8K_OFFSET_MASK_8M 0x00000000007fe000ULL +#define IOMMU_TSB_8K_OFFSET_MASK_16M 0x0000000000ffe000ULL +#define IOMMU_TSB_8K_OFFSET_MASK_32M 0x0000000001ffe000ULL +#define IOMMU_TSB_8K_OFFSET_MASK_64M 0x0000000003ffe000ULL +#define IOMMU_TSB_8K_OFFSET_MASK_128M 0x0000000007ffe000ULL +#define IOMMU_TSB_8K_OFFSET_MASK_256M 0x000000000fffe000ULL +#define IOMMU_TSB_8K_OFFSET_MASK_512M 0x000000001fffe000ULL +#define IOMMU_TSB_8K_OFFSET_MASK_1G 0x000000003fffe000ULL + +#define IOMMU_TSB_64K_OFFSET_MASK_64M 0x0000000003ff0000ULL +#define IOMMU_TSB_64K_OFFSET_MASK_128M 0x0000000007ff0000ULL +#define IOMMU_TSB_64K_OFFSET_MASK_256M 0x000000000fff0000ULL +#define IOMMU_TSB_64K_OFFSET_MASK_512M 0x000000001fff0000ULL +#define IOMMU_TSB_64K_OFFSET_MASK_1G 0x000000003fff0000ULL +#define IOMMU_TSB_64K_OFFSET_MASK_2G 0x000000007fff0000ULL + +typedef struct IOMMUState { + AddressSpace iommu_as; + MemoryRegion iommu; + + uint64_t regs[IOMMU_NREGS]; +} IOMMUState; + +#define TYPE_APB "pbm" + +#define APB_DEVICE(obj) \ + OBJECT_CHECK(APBState, (obj), TYPE_APB) + +typedef struct APBState { + PCIHostState parent_obj; + + MemoryRegion apb_config; + MemoryRegion pci_config; + MemoryRegion pci_mmio; + MemoryRegion pci_ioport; + uint64_t pci_irq_in; + IOMMUState iommu; + uint32_t pci_control[16]; + uint32_t pci_irq_map[8]; + uint32_t pci_err_irq_map[4]; + uint32_t obio_irq_map[32]; + qemu_irq *pbm_irqs; + qemu_irq *ivec_irqs; + unsigned int irq_request; + uint32_t reset_control; + unsigned int nr_resets; +} APBState; + +static inline void pbm_set_request(APBState *s, unsigned int irq_num) +{ + APB_DPRINTF("%s: request irq %d\n", __func__, irq_num); + + s->irq_request = irq_num; + qemu_set_irq(s->ivec_irqs[irq_num], 1); +} + +static inline void pbm_check_irqs(APBState *s) +{ + + unsigned int i; + + /* Previous request is not acknowledged, resubmit */ + if (s->irq_request != NO_IRQ_REQUEST) { + pbm_set_request(s, s->irq_request); + return; + } + /* no request pending */ + if (s->pci_irq_in == 0ULL) { + return; + } + for (i = 0; i < 32; i++) { + if (s->pci_irq_in & (1ULL << i)) { + if (s->pci_irq_map[i >> 2] & PBM_PCI_IMR_ENABLED) { + pbm_set_request(s, i); + return; + } + } + } + for (i = 32; i < 64; i++) { + if (s->pci_irq_in & (1ULL << i)) { + if (s->obio_irq_map[i - 32] & PBM_PCI_IMR_ENABLED) { + pbm_set_request(s, i); + break; + } + } + } +} + +static inline void pbm_clear_request(APBState *s, unsigned int irq_num) +{ + APB_DPRINTF("%s: clear request irq %d\n", __func__, irq_num); + qemu_set_irq(s->ivec_irqs[irq_num], 0); + s->irq_request = NO_IRQ_REQUEST; +} + +static AddressSpace *pbm_pci_dma_iommu(PCIBus *bus, void *opaque, int devfn) +{ + IOMMUState *is = opaque; + + return &is->iommu_as; +} + +/* Called from RCU critical section */ +static IOMMUTLBEntry pbm_translate_iommu(MemoryRegion *iommu, hwaddr addr, + bool is_write) +{ + IOMMUState *is = container_of(iommu, IOMMUState, iommu); + hwaddr baseaddr, offset; + uint64_t tte; + uint32_t tsbsize; + IOMMUTLBEntry ret = { + .target_as = &address_space_memory, + .iova = 0, + .translated_addr = 0, + .addr_mask = ~(hwaddr)0, + .perm = IOMMU_NONE, + }; + + if (!(is->regs[IOMMU_CTRL >> 3] & IOMMU_CTRL_MMU_EN)) { + /* IOMMU disabled, passthrough using standard 8K page */ + ret.iova = addr & IOMMU_PAGE_MASK_8K; + ret.translated_addr = addr; + ret.addr_mask = IOMMU_PAGE_MASK_8K; + ret.perm = IOMMU_RW; + + return ret; + } + + baseaddr = is->regs[IOMMU_BASE >> 3]; + tsbsize = (is->regs[IOMMU_CTRL >> 3] >> IOMMU_CTRL_TSB_SHIFT) & 0x7; + + if (is->regs[IOMMU_CTRL >> 3] & IOMMU_CTRL_TBW_SIZE) { + /* 64K */ + switch (tsbsize) { + case 0: + offset = (addr & IOMMU_TSB_64K_OFFSET_MASK_64M) >> 13; + break; + case 1: + offset = (addr & IOMMU_TSB_64K_OFFSET_MASK_128M) >> 13; + break; + case 2: + offset = (addr & IOMMU_TSB_64K_OFFSET_MASK_256M) >> 13; + break; + case 3: + offset = (addr & IOMMU_TSB_64K_OFFSET_MASK_512M) >> 13; + break; + case 4: + offset = (addr & IOMMU_TSB_64K_OFFSET_MASK_1G) >> 13; + break; + case 5: + offset = (addr & IOMMU_TSB_64K_OFFSET_MASK_2G) >> 13; + break; + default: + /* Not implemented, error */ + return ret; + } + } else { + /* 8K */ + switch (tsbsize) { + case 0: + offset = (addr & IOMMU_TSB_8K_OFFSET_MASK_8M) >> 10; + break; + case 1: + offset = (addr & IOMMU_TSB_8K_OFFSET_MASK_16M) >> 10; + break; + case 2: + offset = (addr & IOMMU_TSB_8K_OFFSET_MASK_32M) >> 10; + break; + case 3: + offset = (addr & IOMMU_TSB_8K_OFFSET_MASK_64M) >> 10; + break; + case 4: + offset = (addr & IOMMU_TSB_8K_OFFSET_MASK_128M) >> 10; + break; + case 5: + offset = (addr & IOMMU_TSB_8K_OFFSET_MASK_256M) >> 10; + break; + case 6: + offset = (addr & IOMMU_TSB_8K_OFFSET_MASK_512M) >> 10; + break; + case 7: + offset = (addr & IOMMU_TSB_8K_OFFSET_MASK_1G) >> 10; + break; + } + } + + tte = address_space_ldq_be(&address_space_memory, baseaddr + offset, + MEMTXATTRS_UNSPECIFIED, NULL); + + if (!(tte & IOMMU_TTE_DATA_V)) { + /* Invalid mapping */ + return ret; + } + + if (tte & IOMMU_TTE_DATA_W) { + /* Writeable */ + ret.perm = IOMMU_RW; + } else { + ret.perm = IOMMU_RO; + } + + /* Extract phys */ + if (tte & IOMMU_TTE_DATA_SIZE) { + /* 64K */ + ret.iova = addr & IOMMU_PAGE_MASK_64K; + ret.translated_addr = tte & IOMMU_TTE_PHYS_MASK_64K; + ret.addr_mask = (IOMMU_PAGE_SIZE_64K - 1); + } else { + /* 8K */ + ret.iova = addr & IOMMU_PAGE_MASK_8K; + ret.translated_addr = tte & IOMMU_TTE_PHYS_MASK_8K; + ret.addr_mask = (IOMMU_PAGE_SIZE_8K - 1); + } + + return ret; +} + +static MemoryRegionIOMMUOps pbm_iommu_ops = { + .translate = pbm_translate_iommu, +}; + +static void iommu_config_write(void *opaque, hwaddr addr, + uint64_t val, unsigned size) +{ + IOMMUState *is = opaque; + + IOMMU_DPRINTF("IOMMU config write: 0x%" HWADDR_PRIx " val: %" PRIx64 + " size: %d\n", addr, val, size); + + switch (addr) { + case IOMMU_CTRL: + if (size == 4) { + is->regs[IOMMU_CTRL >> 3] &= 0xffffffffULL; + is->regs[IOMMU_CTRL >> 3] |= val << 32; + } else { + is->regs[IOMMU_CTRL >> 3] = val; + } + break; + case IOMMU_CTRL + 0x4: + is->regs[IOMMU_CTRL >> 3] &= 0xffffffff00000000ULL; + is->regs[IOMMU_CTRL >> 3] |= val & 0xffffffffULL; + break; + case IOMMU_BASE: + if (size == 4) { + is->regs[IOMMU_BASE >> 3] &= 0xffffffffULL; + is->regs[IOMMU_BASE >> 3] |= val << 32; + } else { + is->regs[IOMMU_BASE >> 3] = val; + } + break; + case IOMMU_BASE + 0x4: + is->regs[IOMMU_BASE >> 3] &= 0xffffffff00000000ULL; + is->regs[IOMMU_BASE >> 3] |= val & 0xffffffffULL; + break; + case IOMMU_FLUSH: + case IOMMU_FLUSH + 0x4: + break; + default: + qemu_log_mask(LOG_UNIMP, + "apb iommu: Unimplemented register write " + "reg 0x%" HWADDR_PRIx " size 0x%x value 0x%" PRIx64 "\n", + addr, size, val); + break; + } +} + +static uint64_t iommu_config_read(void *opaque, hwaddr addr, unsigned size) +{ + IOMMUState *is = opaque; + uint64_t val; + + switch (addr) { + case IOMMU_CTRL: + if (size == 4) { + val = is->regs[IOMMU_CTRL >> 3] >> 32; + } else { + val = is->regs[IOMMU_CTRL >> 3]; + } + break; + case IOMMU_CTRL + 0x4: + val = is->regs[IOMMU_CTRL >> 3] & 0xffffffffULL; + break; + case IOMMU_BASE: + if (size == 4) { + val = is->regs[IOMMU_BASE >> 3] >> 32; + } else { + val = is->regs[IOMMU_BASE >> 3]; + } + break; + case IOMMU_BASE + 0x4: + val = is->regs[IOMMU_BASE >> 3] & 0xffffffffULL; + break; + case IOMMU_FLUSH: + case IOMMU_FLUSH + 0x4: + val = 0; + break; + default: + qemu_log_mask(LOG_UNIMP, + "apb iommu: Unimplemented register read " + "reg 0x%" HWADDR_PRIx " size 0x%x\n", + addr, size); + val = 0; + break; + } + + IOMMU_DPRINTF("IOMMU config read: 0x%" HWADDR_PRIx " val: %" PRIx64 + " size: %d\n", addr, val, size); + + return val; +} + +static void apb_config_writel (void *opaque, hwaddr addr, + uint64_t val, unsigned size) +{ + APBState *s = opaque; + IOMMUState *is = &s->iommu; + + APB_DPRINTF("%s: addr " TARGET_FMT_plx " val %" PRIx64 "\n", __func__, addr, val); + + switch (addr & 0xffff) { + case 0x30 ... 0x4f: /* DMA error registers */ + /* XXX: not implemented yet */ + break; + case 0x200 ... 0x217: /* IOMMU */ + iommu_config_write(is, (addr & 0x1f), val, size); + break; + case 0xc00 ... 0xc3f: /* PCI interrupt control */ + if (addr & 4) { + unsigned int ino = (addr & 0x3f) >> 3; + s->pci_irq_map[ino] &= PBM_PCI_IMR_MASK; + s->pci_irq_map[ino] |= val & ~PBM_PCI_IMR_MASK; + if ((s->irq_request == ino) && !(val & ~PBM_PCI_IMR_MASK)) { + pbm_clear_request(s, ino); + } + pbm_check_irqs(s); + } + break; + case 0x1000 ... 0x107f: /* OBIO interrupt control */ + if (addr & 4) { + unsigned int ino = ((addr & 0xff) >> 3); + s->obio_irq_map[ino] &= PBM_PCI_IMR_MASK; + s->obio_irq_map[ino] |= val & ~PBM_PCI_IMR_MASK; + if ((s->irq_request == (ino | 0x20)) + && !(val & ~PBM_PCI_IMR_MASK)) { + pbm_clear_request(s, ino | 0x20); + } + pbm_check_irqs(s); + } + break; + case 0x1400 ... 0x14ff: /* PCI interrupt clear */ + if (addr & 4) { + unsigned int ino = (addr & 0xff) >> 5; + if ((s->irq_request / 4) == ino) { + pbm_clear_request(s, s->irq_request); + pbm_check_irqs(s); + } + } + break; + case 0x1800 ... 0x1860: /* OBIO interrupt clear */ + if (addr & 4) { + unsigned int ino = ((addr & 0xff) >> 3) | 0x20; + if (s->irq_request == ino) { + pbm_clear_request(s, ino); + pbm_check_irqs(s); + } + } + break; + case 0x2000 ... 0x202f: /* PCI control */ + s->pci_control[(addr & 0x3f) >> 2] = val; + break; + case 0xf020 ... 0xf027: /* Reset control */ + if (addr & 4) { + val &= RESET_MASK; + s->reset_control &= ~(val & RESET_WCMASK); + s->reset_control |= val & RESET_WMASK; + if (val & SOFT_POR) { + s->nr_resets = 0; + qemu_system_reset_request(); + } else if (val & SOFT_XIR) { + qemu_system_reset_request(); + } + } + break; + case 0x5000 ... 0x51cf: /* PIO/DMA diagnostics */ + case 0xa400 ... 0xa67f: /* IOMMU diagnostics */ + case 0xa800 ... 0xa80f: /* Interrupt diagnostics */ + case 0xf000 ... 0xf01f: /* FFB config, memory control */ + /* we don't care */ + default: + break; + } +} + +static uint64_t apb_config_readl (void *opaque, + hwaddr addr, unsigned size) +{ + APBState *s = opaque; + IOMMUState *is = &s->iommu; + uint32_t val; + + switch (addr & 0xffff) { + case 0x30 ... 0x4f: /* DMA error registers */ + val = 0; + /* XXX: not implemented yet */ + break; + case 0x200 ... 0x217: /* IOMMU */ + val = iommu_config_read(is, (addr & 0x1f), size); + break; + case 0xc00 ... 0xc3f: /* PCI interrupt control */ + if (addr & 4) { + val = s->pci_irq_map[(addr & 0x3f) >> 3]; + } else { + val = 0; + } + break; + case 0x1000 ... 0x107f: /* OBIO interrupt control */ + if (addr & 4) { + val = s->obio_irq_map[(addr & 0xff) >> 3]; + } else { + val = 0; + } + break; + case 0x1080 ... 0x108f: /* PCI bus error */ + if (addr & 4) { + val = s->pci_err_irq_map[(addr & 0xf) >> 3]; + } else { + val = 0; + } + break; + case 0x2000 ... 0x202f: /* PCI control */ + val = s->pci_control[(addr & 0x3f) >> 2]; + break; + case 0xf020 ... 0xf027: /* Reset control */ + if (addr & 4) { + val = s->reset_control; + } else { + val = 0; + } + break; + case 0x5000 ... 0x51cf: /* PIO/DMA diagnostics */ + case 0xa400 ... 0xa67f: /* IOMMU diagnostics */ + case 0xa800 ... 0xa80f: /* Interrupt diagnostics */ + case 0xf000 ... 0xf01f: /* FFB config, memory control */ + /* we don't care */ + default: + val = 0; + break; + } + APB_DPRINTF("%s: addr " TARGET_FMT_plx " -> %x\n", __func__, addr, val); + + return val; +} + +static const MemoryRegionOps apb_config_ops = { + .read = apb_config_readl, + .write = apb_config_writel, + .endianness = DEVICE_NATIVE_ENDIAN, +}; + +static void apb_pci_config_write(void *opaque, hwaddr addr, + uint64_t val, unsigned size) +{ + APBState *s = opaque; + PCIHostState *phb = PCI_HOST_BRIDGE(s); + + val = qemu_bswap_len(val, size); + APB_DPRINTF("%s: addr " TARGET_FMT_plx " val %" PRIx64 "\n", __func__, addr, val); + pci_data_write(phb->bus, addr, val, size); +} + +static uint64_t apb_pci_config_read(void *opaque, hwaddr addr, + unsigned size) +{ + uint32_t ret; + APBState *s = opaque; + PCIHostState *phb = PCI_HOST_BRIDGE(s); + + ret = pci_data_read(phb->bus, addr, size); + ret = qemu_bswap_len(ret, size); + APB_DPRINTF("%s: addr " TARGET_FMT_plx " -> %x\n", __func__, addr, ret); + return ret; +} + +/* The APB host has an IRQ line for each IRQ line of each slot. */ +static int pci_apb_map_irq(PCIDevice *pci_dev, int irq_num) +{ + return ((pci_dev->devfn & 0x18) >> 1) + irq_num; +} + +static int pci_pbm_map_irq(PCIDevice *pci_dev, int irq_num) +{ + int bus_offset; + if (pci_dev->devfn & 1) + bus_offset = 16; + else + bus_offset = 0; + return (bus_offset + (PCI_SLOT(pci_dev->devfn) << 2) + irq_num) & 0x1f; +} + +static void pci_apb_set_irq(void *opaque, int irq_num, int level) +{ + APBState *s = opaque; + + APB_DPRINTF("%s: set irq_in %d level %d\n", __func__, irq_num, level); + /* PCI IRQ map onto the first 32 INO. */ + if (irq_num < 32) { + if (level) { + s->pci_irq_in |= 1ULL << irq_num; + if (s->pci_irq_map[irq_num >> 2] & PBM_PCI_IMR_ENABLED) { + pbm_set_request(s, irq_num); + } + } else { + s->pci_irq_in &= ~(1ULL << irq_num); + } + } else { + /* OBIO IRQ map onto the next 32 INO. */ + if (level) { + APB_DPRINTF("%s: set irq %d level %d\n", __func__, irq_num, level); + s->pci_irq_in |= 1ULL << irq_num; + if ((s->irq_request == NO_IRQ_REQUEST) + && (s->obio_irq_map[irq_num - 32] & PBM_PCI_IMR_ENABLED)) { + pbm_set_request(s, irq_num); + } + } else { + s->pci_irq_in &= ~(1ULL << irq_num); + } + } +} + +static int apb_pci_bridge_initfn(PCIDevice *dev) +{ + int rc; + + rc = pci_bridge_initfn(dev, TYPE_PCI_BUS); + if (rc < 0) { + return rc; + } + + /* + * 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. + */ + 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); + return 0; +} + +PCIBus *pci_apb_init(hwaddr special_base, + hwaddr mem_base, + qemu_irq *ivec_irqs, PCIBus **bus2, PCIBus **bus3, + qemu_irq **pbm_irqs) +{ + DeviceState *dev; + SysBusDevice *s; + PCIHostState *phb; + APBState *d; + IOMMUState *is; + PCIDevice *pci_dev; + PCIBridge *br; + + /* Ultrasparc PBM main bus */ + dev = qdev_create(NULL, TYPE_APB); + qdev_init_nofail(dev); + s = SYS_BUS_DEVICE(dev); + /* apb_config */ + sysbus_mmio_map(s, 0, special_base); + /* PCI configuration space */ + sysbus_mmio_map(s, 1, special_base + 0x1000000ULL); + /* pci_ioport */ + sysbus_mmio_map(s, 2, special_base + 0x2000000ULL); + d = APB_DEVICE(dev); + + memory_region_init(&d->pci_mmio, OBJECT(s), "pci-mmio", 0x100000000ULL); + memory_region_add_subregion(get_system_memory(), mem_base, &d->pci_mmio); + + phb = PCI_HOST_BRIDGE(dev); + phb->bus = pci_register_bus(DEVICE(phb), "pci", + pci_apb_set_irq, pci_pbm_map_irq, d, + &d->pci_mmio, + get_system_io(), + 0, 32, TYPE_PCI_BUS); + + *pbm_irqs = d->pbm_irqs; + d->ivec_irqs = ivec_irqs; + + pci_create_simple(phb->bus, 0, "pbm-pci"); + + /* APB IOMMU */ + is = &d->iommu; + memset(is, 0, sizeof(IOMMUState)); + + memory_region_init_iommu(&is->iommu, OBJECT(dev), &pbm_iommu_ops, + "iommu-apb", UINT64_MAX); + address_space_init(&is->iommu_as, &is->iommu, "pbm-as"); + pci_setup_iommu(phb->bus, pbm_pci_dma_iommu, is); + + /* APB secondary busses */ + pci_dev = pci_create_multifunction(phb->bus, PCI_DEVFN(1, 0), true, + "pbm-bridge"); + br = PCI_BRIDGE(pci_dev); + pci_bridge_map_irq(br, "Advanced PCI Bus secondary bridge 1", + pci_apb_map_irq); + qdev_init_nofail(&pci_dev->qdev); + *bus2 = pci_bridge_get_sec_bus(br); + + pci_dev = pci_create_multifunction(phb->bus, PCI_DEVFN(1, 1), true, + "pbm-bridge"); + br = PCI_BRIDGE(pci_dev); + pci_bridge_map_irq(br, "Advanced PCI Bus secondary bridge 2", + pci_apb_map_irq); + qdev_init_nofail(&pci_dev->qdev); + *bus3 = pci_bridge_get_sec_bus(br); + + return phb->bus; +} + +static void pci_pbm_reset(DeviceState *d) +{ + unsigned int i; + APBState *s = APB_DEVICE(d); + + for (i = 0; i < 8; i++) { + s->pci_irq_map[i] &= PBM_PCI_IMR_MASK; + } + for (i = 0; i < 32; i++) { + s->obio_irq_map[i] &= PBM_PCI_IMR_MASK; + } + + s->irq_request = NO_IRQ_REQUEST; + s->pci_irq_in = 0ULL; + + if (s->nr_resets++ == 0) { + /* Power on reset */ + s->reset_control = POR; + } +} + +static const MemoryRegionOps pci_config_ops = { + .read = apb_pci_config_read, + .write = apb_pci_config_write, + .endianness = DEVICE_NATIVE_ENDIAN, +}; + +static int pci_pbm_init_device(SysBusDevice *dev) +{ + APBState *s; + unsigned int i; + + s = APB_DEVICE(dev); + for (i = 0; i < 8; i++) { + s->pci_irq_map[i] = (0x1f << 6) | (i << 2); + } + for (i = 0; i < 2; i++) { + s->pci_err_irq_map[i] = (0x1f << 6) | 0x30; + } + for (i = 0; i < 32; i++) { + s->obio_irq_map[i] = ((0x1f << 6) | 0x20) + i; + } + s->pbm_irqs = qemu_allocate_irqs(pci_apb_set_irq, s, MAX_IVEC); + s->irq_request = NO_IRQ_REQUEST; + s->pci_irq_in = 0ULL; + + /* apb_config */ + memory_region_init_io(&s->apb_config, OBJECT(s), &apb_config_ops, s, + "apb-config", 0x10000); + /* at region 0 */ + sysbus_init_mmio(dev, &s->apb_config); + + memory_region_init_io(&s->pci_config, OBJECT(s), &pci_config_ops, s, + "apb-pci-config", 0x1000000); + /* at region 1 */ + sysbus_init_mmio(dev, &s->pci_config); + + /* pci_ioport */ + memory_region_init_alias(&s->pci_ioport, OBJECT(s), "apb-pci-ioport", + get_system_io(), 0, 0x10000); + /* at region 2 */ + sysbus_init_mmio(dev, &s->pci_ioport); + + return 0; +} + +static void pbm_pci_host_realize(PCIDevice *d, Error **errp) +{ + pci_set_word(d->config + PCI_COMMAND, + PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER); + pci_set_word(d->config + PCI_STATUS, + PCI_STATUS_FAST_BACK | PCI_STATUS_66MHZ | + PCI_STATUS_DEVSEL_MEDIUM); +} + +static void pbm_pci_host_class_init(ObjectClass *klass, void *data) +{ + PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); + DeviceClass *dc = DEVICE_CLASS(klass); + + k->realize = pbm_pci_host_realize; + k->vendor_id = PCI_VENDOR_ID_SUN; + k->device_id = PCI_DEVICE_ID_SUN_SABRE; + k->class_id = PCI_CLASS_BRIDGE_HOST; + /* + * PCI-facing part of the host bridge, not usable without the + * host-facing part, which can't be device_add'ed, yet. + */ + dc->cannot_instantiate_with_device_add_yet = true; +} + +static const TypeInfo pbm_pci_host_info = { + .name = "pbm-pci", + .parent = TYPE_PCI_DEVICE, + .instance_size = sizeof(PCIDevice), + .class_init = pbm_pci_host_class_init, +}; + +static void pbm_host_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass); + + k->init = pci_pbm_init_device; + set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories); + dc->reset = pci_pbm_reset; +} + +static const TypeInfo pbm_host_info = { + .name = TYPE_APB, + .parent = TYPE_PCI_HOST_BRIDGE, + .instance_size = sizeof(APBState), + .class_init = pbm_host_class_init, +}; + +static void pbm_pci_bridge_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); + + k->init = apb_pci_bridge_initfn; + 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 = 1; + set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories); + dc->reset = pci_bridge_reset; + dc->vmsd = &vmstate_pci_device; +} + +static const TypeInfo pbm_pci_bridge_info = { + .name = "pbm-bridge", + .parent = TYPE_PCI_BRIDGE, + .class_init = pbm_pci_bridge_class_init, +}; + +static void pbm_register_types(void) +{ + type_register_static(&pbm_host_info); + type_register_static(&pbm_pci_host_info); + type_register_static(&pbm_pci_bridge_info); +} + +type_init(pbm_register_types) |
