/* * QEMU IDE Emulation: PCI PIIX3/4 support. * * Copyright (c) 2003 Fabrice Bellard * Copyright (c) 2006 Openedhand Ltd. * * 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. * * References: * [1] 82371FB (PIIX) AND 82371SB (PIIX3) PCI ISA IDE XCELERATOR, * 290550-002, Intel Corporation, April 1997. */ #include "qemu/osdep.h" #include "migration/vmstate.h" #include "qapi/error.h" #include "hw/pci/pci.h" #include "hw/ide/piix.h" #include "hw/ide/pci.h" #include "trace.h" static uint64_t bmdma_read(void *opaque, hwaddr addr, unsigned size) { BMDMAState *bm = opaque; uint32_t val; if (size != 1) { return ((uint64_t)1 << (size * 8)) - 1; } switch(addr & 3) { case 0: val = bm->cmd; break; case 2: val = bm->status; break; default: val = 0xff; break; } trace_bmdma_read(addr, val); return val; } static void bmdma_write(void *opaque, hwaddr addr, uint64_t val, unsigned size) { BMDMAState *bm = opaque; if (size != 1) { return; } trace_bmdma_write(addr, val); switch(addr & 3) { case 0: bmdma_cmd_writeb(bm, val); break; case 2: bm->status = (val & 0x60) | (bm->status & 1) | (bm->status & ~val & 0x06); break; } } static const MemoryRegionOps piix_bmdma_ops = { .read = bmdma_read, .write = bmdma_write, }; static void bmdma_setup_bar(PCIIDEState *d) { int i; memory_region_init(&d->bmdma_bar, OBJECT(d), "piix-bmdma-container", 16); for(i = 0;i < 2; i++) { BMDMAState *bm = &d->bmdma[i]; memory_region_init_io(&bm->extra_io, OBJECT(d), &piix_bmdma_ops, bm, "piix-bmdma", 4); memory_region_add_subregion(&d->bmdma_bar, i * 8, &bm->extra_io); memory_region_init_io(&bm->addr_ioport, OBJECT(d), &bmdma_addr_ioport_ops, bm, "bmdma", 4); memory_region_add_subregion(&d->bmdma_bar, i * 8 + 4, &bm->addr_ioport); } } static void piix_ide_reset(DeviceState *dev) { PCIIDEState *d = PCI_IDE(dev); PCIDevice *pd = PCI_DEVICE(d); uint8_t *pci_conf = pd->config; int i; for (i = 0; i < 2; i++) { ide_bus_reset(&d->bus[i]); } /* PCI command register default value (0000h) per [1, p.48]. */ pci_set_word(pci_conf + PCI_COMMAND, 0x0000); pci_set_word(pci_conf + PCI_STATUS, PCI_STATUS_DEVSEL_MEDIUM | PCI_STATUS_FAST_BACK); pci_set_long(pci_conf + 0x20, 0x1); /* BMIBA: 20-23h */ } static bool pci_piix_init_bus(PCIIDEState *d, unsigned i, Error **errp) { static const struct { int iobase; int iobase2; int isairq; } port_info[] = { {0x1f0, 0x3f6, 14}, {0x170, 0x376, 15}, }; int ret; ide_bus_init(&d->bus[i], sizeof(d->bus[i]), DEVICE(d), i, 2); ret = ide_init_ioport(&d->bus[i], NULL, port_info[i].iobase, port_info[i].iobase2); if (ret) { error_setg_errno(errp, -ret, "Failed to realize %s port %u", object_get_typename(OBJECT(d)), i); return false; } ide_bus_init_output_irq(&d->bus[i], isa_get_irq(NULL, port_info[i].isairq)); bmdma_init(&d->bus[i], &d->bmdma[i], d); d->bmdma[i].bus = &d->bus[i]; ide_bus_register_restart_cb(&d->bus[i]); return true; } static void pci_piix_ide_realize(PCIDevice *dev, Error **errp) { PCIIDEState *d = PCI_IDE(dev); uint8_t *pci_conf = dev->config; pci_conf[PCI_CLASS_PROG] = 0x80; // legacy ATA mode bmdma_setup_bar(d); pci_register_bar(dev, 4, PCI_BASE_ADDRESS_SPACE_IO, &d->bmdma_bar); vmstate_register(VMSTATE_IF(dev), 0, &vmstate_ide_pci, d); for (unsigned i = 0; i < 2; i++) { if (!pci_piix_init_bus(d, i, errp)) { return; } } } static void pci_piix_ide_exitfn(PCIDevice *dev) { PCIIDEState *d = PCI_IDE(dev); unsigned i; for (i = 0; i < 2; ++i) { memory_region_del_subregion(&d->bmdma_bar, &d->bmdma[i].extra_io); memory_region_del_subregion(&d->bmdma_bar, &d->bmdma[i].addr_ioport); } } /* NOTE: for the PIIX3, the IRQs and IOports are hardcoded */ static void piix3_ide_class_init(ObjectClass *klass, void *data) { DeviceClass *dc = DEVICE_CLASS(klass); PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); dc->reset = piix_ide_reset; k->realize = pci_piix_ide_realize; k->exit = pci_piix_ide_exitfn; k->vendor_id = PCI_VENDOR_ID_INTEL; k->device_id = PCI_DEVICE_ID_INTEL_82371SB_1; k->class_id = PCI_CLASS_STORAGE_IDE; set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); dc->hotpluggable = false; } static const TypeInfo piix3_ide_info = { .name = TYPE_PIIX3_IDE, .parent = TYPE_PCI_IDE, .class_init = piix3_ide_class_init, }; /* NOTE: for the PIIX4, the IRQs and IOports are hardcoded */ static void piix4_ide_class_init(ObjectClass *klass, void *data) { DeviceClass *dc = DEVICE_CLASS(klass); PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); dc->reset = piix_ide_reset; k->realize = pci_piix_ide_realize; k->exit = pci_piix_ide_exitfn; k->vendor_id = PCI_VENDOR_ID_INTEL; k->device_id = PCI_DEVICE_ID_INTEL_82371AB; k->class_id = PCI_CLASS_STORAGE_IDE; set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); dc->hotpluggable = false; } static const TypeInfo piix4_ide_info = { .name = TYPE_PIIX4_IDE, .parent = TYPE_PCI_IDE, .class_init = piix4_ide_class_init, }; static void piix_ide_register_types(void) { type_register_static(&piix3_ide_info); type_register_static(&piix4_ide_info); } type_init(piix_ide_register_types)