/* * QEMU IDE Emulation: PCI cmd646 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. */ #include #include #include #include #include "sysemu/block-backend.h" #include "sysemu/sysemu.h" #include "sysemu/dma.h" #include /* CMD646 specific */ #define CFR 0x50 #define CFR_INTR_CH0 0x04 #define CNTRL 0x51 #define CNTRL_EN_CH0 0x04 #define CNTRL_EN_CH1 0x08 #define ARTTIM23 0x57 #define ARTTIM23_INTR_CH1 0x10 #define MRDMODE 0x71 #define MRDMODE_INTR_CH0 0x04 #define MRDMODE_INTR_CH1 0x08 #define MRDMODE_BLK_CH0 0x10 #define MRDMODE_BLK_CH1 0x20 #define UDIDETCR0 0x73 #define UDIDETCR1 0x7B static void cmd646_update_irq(PCIDevice *pd); static uint64_t cmd646_cmd_read(void *opaque, hwaddr addr, unsigned size) { CMD646BAR *cmd646bar = opaque; if (addr != 2 || size != 1) { return ((uint64_t)1 << (size * 8)) - 1; } return ide_status_read(cmd646bar->bus, addr + 2); } static void cmd646_cmd_write(void *opaque, hwaddr addr, uint64_t data, unsigned size) { CMD646BAR *cmd646bar = opaque; if (addr != 2 || size != 1) { return; } ide_cmd_write(cmd646bar->bus, addr + 2, data); } static const MemoryRegionOps cmd646_cmd_ops = { .read = cmd646_cmd_read, .write = cmd646_cmd_write, .endianness = DEVICE_LITTLE_ENDIAN, }; static uint64_t cmd646_data_read(void *opaque, hwaddr addr, unsigned size) { CMD646BAR *cmd646bar = opaque; if (size == 1) { return ide_ioport_read(cmd646bar->bus, addr); } else if (addr == 0) { if (size == 2) { return ide_data_readw(cmd646bar->bus, addr); } else { return ide_data_readl(cmd646bar->bus, addr); } } return ((uint64_t)1 << (size * 8)) - 1; } static void cmd646_data_write(void *opaque, hwaddr addr, uint64_t data, unsigned size) { CMD646BAR *cmd646bar = opaque; if (size == 1) { ide_ioport_write(cmd646bar->bus, addr, data); } else if (addr == 0) { if (size == 2) { ide_data_writew(cmd646bar->bus, addr, data); } else { ide_data_writel(cmd646bar->bus, addr, data); } } } static const MemoryRegionOps cmd646_data_ops = { .read = cmd646_data_read, .write = cmd646_data_write, .endianness = DEVICE_LITTLE_ENDIAN, }; static void setup_cmd646_bar(PCIIDEState *d, int bus_num) { IDEBus *bus = &d->bus[bus_num]; CMD646BAR *bar = &d->cmd646_bar[bus_num]; bar->bus = bus; bar->pci_dev = d; memory_region_init_io(&bar->cmd, OBJECT(d), &cmd646_cmd_ops, bar, "cmd646-cmd", 4); memory_region_init_io(&bar->data, OBJECT(d), &cmd646_data_ops, bar, "cmd646-data", 8); } static void cmd646_update_dma_interrupts(PCIDevice *pd) { /* Sync DMA interrupt status from UDMA interrupt status */ if (pd->config[MRDMODE] & MRDMODE_INTR_CH0) { pd->config[CFR] |= CFR_INTR_CH0; } else { pd->config[CFR] &= ~CFR_INTR_CH0; } if (pd->config[MRDMODE] & MRDMODE_INTR_CH1) { pd->config[ARTTIM23] |= ARTTIM23_INTR_CH1; } else { pd->config[ARTTIM23] &= ~ARTTIM23_INTR_CH1; } } static void cmd646_update_udma_interrupts(PCIDevice *pd) { /* Sync UDMA interrupt status from DMA interrupt status */ if (pd->config[CFR] & CFR_INTR_CH0) { pd->config[MRDMODE] |= MRDMODE_INTR_CH0; } else { pd->config[MRDMODE] &= ~MRDMODE_INTR_CH0; } if (pd->config[ARTTIM23] & ARTTIM23_INTR_CH1) { pd->config[MRDMODE] |= MRDMODE_INTR_CH1; } else { pd->config[MRDMODE] &= ~MRDMODE_INTR_CH1; } } static uint64_t bmdma_read(void *opaque, hwaddr addr, unsigned size) { BMDMAState *bm = opaque; PCIDevice *pci_dev = PCI_DEVICE(bm->pci_dev); uint32_t val; if (size != 1) { return ((uint64_t)1 << (size * 8)) - 1; } switch(addr & 3) { case 0: val = bm->cmd; break; case 1: val = pci_dev->config[MRDMODE]; break; case 2: val = bm->status; break; case 3: if (bm == &bm->pci_dev->bmdma[0]) { val = pci_dev->config[UDIDETCR0]; } else { val = pci_dev->config[UDIDETCR1]; } break; default: val = 0xff; break; } #ifdef DEBUG_IDE printf("bmdma: readb " TARGET_FMT_plx " : 0x%02x\n", addr, val); #endif return val; } static void bmdma_write(void *opaque, hwaddr addr, uint64_t val, unsigned size) { BMDMAState *bm = opaque; PCIDevice *pci_dev = PCI_DEVICE(bm->pci_dev); if (size != 1) { return; } #ifdef DEBUG_IDE printf("bmdma: writeb " TARGET_FMT_plx " : 0x%" PRIx64 "\n", addr, val); #endif switch(addr & 3) { case 0: bmdma_cmd_writeb(bm, val); break; case 1: pci_dev->config[MRDMODE] = (pci_dev->config[MRDMODE] & ~0x30) | (val & 0x30); cmd646_update_dma_interrupts(pci_dev); cmd646_update_irq(pci_dev); break; case 2: bm->status = (val & 0x60) | (bm->status & 1) | (bm->status & ~val & 0x06); break; case 3: if (bm == &bm->pci_dev->bmdma[0]) { pci_dev->config[UDIDETCR0] = val; } else { pci_dev->config[UDIDETCR1] = val; } break; } } static const MemoryRegionOps cmd646_bmdma_ops = { .read = bmdma_read, .write = bmdma_write, }; static void bmdma_setup_bar(PCIIDEState *d) { BMDMAState *bm; int i; memory_region_init(&d->bmdma_bar, OBJECT(d), "cmd646-bmdma", 16); for(i = 0;i < 2; i++) { bm = &d->bmdma[i]; memory_region_init_io(&bm->extra_io, OBJECT(d), &cmd646_bmdma_ops, bm, "cmd646-bmdma-bus", 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, "cmd646-bmdma-ioport", 4); memory_region_add_subregion(&d->bmdma_bar, i * 8 + 4, &bm->addr_ioport); } } static void cmd646_update_irq(PCIDevice *pd) { int pci_level; pci_level = ((pd->config[MRDMODE] & MRDMODE_INTR_CH0) && !(pd->config[MRDMODE] & MRDMODE_BLK_CH0)) || ((pd->config[MRDMODE] & MRDMODE_INTR_CH1) && !(pd->config[MRDMODE] & MRDMODE_BLK_CH1)); pci_set_irq(pd, pci_level); } /* the PCI irq level is the logical OR of the two channels */ static void cmd646_set_irq(void *opaque, int channel, int level) { PCIIDEState *d = opaque; PCIDevice *pd = PCI_DEVICE(d); int irq_mask; irq_mask = MRDMODE_INTR_CH0 << channel; if (level) { pd->config[MRDMODE] |= irq_mask; } else { pd->config[MRDMODE] &= ~irq_mask; } cmd646_update_dma_interrupts(pd); cmd646_update_irq(pd); } static void cmd646_reset(void *opaque) { PCIIDEState *d = opaque; unsigned int i; for (i = 0; i < 2; i++) { ide_bus_reset(&d->bus[i]); } } static uint32_t cmd646_pci_config_read(PCIDevice *d, uint32_t address, int len) { return pci_default_read_config(d, address, len); } static void cmd646_pci_config_write(PCIDevice *d, uint32_t addr, uint32_t val, int l) { uint32_t i; pci_default_write_config(d, addr, val, l); for (i = addr; i < addr + l; i++) { switch (i) { case CFR: case ARTTIM23: cmd646_update_udma_interrupts(d); break; case MRDMODE: cmd646_update_dma_interrupts(d); break; } } cmd646_update_irq(d); } /* CMD646 PCI IDE controller */ static int pci_cmd646_ide_initfn(PCIDevice *dev) { PCIIDEState *d = PCI_IDE(dev); uint8_t *pci_conf = dev->config; qemu_irq *irq; int i; pci_conf[PCI_CLASS_PROG] = 0x8f; pci_conf[CNTRL] = CNTRL_EN_CH0; // enable IDE0 if (d->secondary) { /* XXX: if not enabled, really disable the seconday IDE controller */ pci_conf[CNTRL] |= CNTRL_EN_CH1; /* enable IDE1 */ } /* Set write-to-clear interrupt bits */ dev->wmask[CFR] = 0x0; dev->w1cmask[CFR] = CFR_INTR_CH0; dev->wmask[ARTTIM23] = 0x0; dev->w1cmask[ARTTIM23] = ARTTIM23_INTR_CH1; dev->wmask[MRDMODE] = 0x0; dev->w1cmask[MRDMODE] = MRDMODE_INTR_CH0 | MRDMODE_INTR_CH1; setup_cmd646_bar(d, 0); setup_cmd646_bar(d, 1); pci_register_bar(dev, 0, PCI_BASE_ADDRESS_SPACE_IO, &d->cmd646_bar[0].data); pci_register_bar(dev, 1, PCI_BASE_ADDRESS_SPACE_IO, &d->cmd646_bar[0].cmd); pci_register_bar(dev, 2, PCI_BASE_ADDRESS_SPACE_IO, &d->cmd646_bar[1].data); pci_register_bar(dev, 3, PCI_BASE_ADDRESS_SPACE_IO, &d->cmd646_bar[1].cmd); bmdma_setup_bar(d); pci_register_bar(dev, 4, PCI_BASE_ADDRESS_SPACE_IO, &d->bmdma_bar); /* TODO: RST# value should be 0 */ pci_conf[PCI_INTERRUPT_PIN] = 0x01; // interrupt on pin 1 irq = qemu_allocate_irqs(cmd646_set_irq, d, 2); for (i = 0; i < 2; i++) { ide_bus_new(&d->bus[i], sizeof(d->bus[i]), DEVICE(dev), i, 2); ide_init2(&d->bus[i], irq[i]); bmdma_init(&d->bus[i], &d->bmdma[i], d); d->bmdma[i].bus = &d->bus[i]; ide_register_restart_cb(&d->bus[i]); } vmstate_register(DEVICE(dev), 0, &vmstate_ide_pci, d); qemu_register_reset(cmd646_reset, d); return 0; } static void pci_cmd646_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); } } void pci_cmd646_ide_init(PCIBus *bus, DriveInfo **hd_table, int secondary_ide_enabled) { PCIDevice *dev; dev = pci_create(bus, -1, "cmd646-ide"); qdev_prop_set_uint32(&dev->qdev, "secondary", secondary_ide_enabled); qdev_init_nofail(&dev->qdev); pci_ide_create_devs(dev, hd_table); } static Property cmd646_ide_properties[] = { DEFINE_PROP_UINT32("secondary", PCIIDEState, secondary, 0), DEFINE_PROP_END_OF_LIST(), }; static void cmd646_ide_class_init(ObjectClass *klass, void *data) { DeviceClass *dc = DEVICE_CLASS(klass); PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); k->init = pci_cmd646_ide_initfn; k->exit = pci_cmd646_ide_exitfn; k->vendor_id = PCI_VENDOR_ID_CMD; k->device_id = PCI_DEVICE_ID_CMD_646; k->revision = 0x07; k->class_id = PCI_CLASS_STORAGE_IDE; k->config_read = cmd646_pci_config_read; k->config_write = cmd646_pci_config_write; dc->props = cmd646_ide_properties; } static const TypeInfo cmd646_ide_info = { .name = "cmd646-ide", .parent = TYPE_PCI_IDE, .class_init = cmd646_ide_class_init, }; static void cmd646_ide_register_types(void) { type_register_static(&cmd646_ide_info); } type_init(cmd646_ide_register_types)