diff options
Diffstat (limited to 'hw/ide-pci.c')
| -rw-r--r-- | hw/ide-pci.c | 522 |
1 files changed, 522 insertions, 0 deletions
diff --git a/hw/ide-pci.c b/hw/ide-pci.c new file mode 100644 index 0000000..e3826bf --- /dev/null +++ b/hw/ide-pci.c @@ -0,0 +1,522 @@ +/* + * QEMU IDE Emulation: PCI Bus 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 "hw.h" +#include "pc.h" +#include "block.h" +#include "block_int.h" +#include "sysemu.h" +#include "dma.h" +#include "pci.h" +#include "ide-internal.h" + +/***********************************************************/ +/* PCI IDE definitions */ + +/* CMD646 specific */ +#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 + +#define IDE_TYPE_PIIX3 0 +#define IDE_TYPE_CMD646 1 +#define IDE_TYPE_PIIX4 2 + +typedef struct PCIIDEState { + PCIDevice dev; + IDEBus bus[2]; + BMDMAState bmdma[2]; + int type; /* see IDE_TYPE_xxx */ +} PCIIDEState; + +static void cmd646_update_irq(PCIIDEState *d); + +static void ide_map(PCIDevice *pci_dev, int region_num, + uint32_t addr, uint32_t size, int type) +{ + PCIIDEState *d = (PCIIDEState *)pci_dev; + IDEBus *bus; + + if (region_num <= 3) { + bus = &d->bus[(region_num >> 1)]; + if (region_num & 1) { + register_ioport_read(addr + 2, 1, 1, ide_status_read, bus); + register_ioport_write(addr + 2, 1, 1, ide_cmd_write, bus); + } else { + register_ioport_write(addr, 8, 1, ide_ioport_write, bus); + register_ioport_read(addr, 8, 1, ide_ioport_read, bus); + + /* data ports */ + register_ioport_write(addr, 2, 2, ide_data_writew, bus); + register_ioport_read(addr, 2, 2, ide_data_readw, bus); + register_ioport_write(addr, 4, 4, ide_data_writel, bus); + register_ioport_read(addr, 4, 4, ide_data_readl, bus); + } + } +} + +static void bmdma_cmd_writeb(void *opaque, uint32_t addr, uint32_t val) +{ + BMDMAState *bm = opaque; +#ifdef DEBUG_IDE + printf("%s: 0x%08x\n", __func__, val); +#endif + if (!(val & BM_CMD_START)) { + /* XXX: do it better */ + ide_dma_cancel(bm); + bm->cmd = val & 0x09; + } else { + if (!(bm->status & BM_STATUS_DMAING)) { + bm->status |= BM_STATUS_DMAING; + /* start dma transfer if possible */ + if (bm->dma_cb) + bm->dma_cb(bm, 0); + } + bm->cmd = val & 0x09; + } +} + +static uint32_t bmdma_readb(void *opaque, uint32_t addr) +{ + BMDMAState *bm = opaque; + PCIIDEState *pci_dev; + uint32_t val; + + switch(addr & 3) { + case 0: + val = bm->cmd; + break; + case 1: + pci_dev = bm->pci_dev; + if (pci_dev->type == IDE_TYPE_CMD646) { + val = pci_dev->dev.config[MRDMODE]; + } else { + val = 0xff; + } + break; + case 2: + val = bm->status; + break; + case 3: + pci_dev = bm->pci_dev; + if (pci_dev->type == IDE_TYPE_CMD646) { + if (bm == &pci_dev->bmdma[0]) + val = pci_dev->dev.config[UDIDETCR0]; + else + val = pci_dev->dev.config[UDIDETCR1]; + } else { + val = 0xff; + } + break; + default: + val = 0xff; + break; + } +#ifdef DEBUG_IDE + printf("bmdma: readb 0x%02x : 0x%02x\n", addr, val); +#endif + return val; +} + +static void bmdma_writeb(void *opaque, uint32_t addr, uint32_t val) +{ + BMDMAState *bm = opaque; + PCIIDEState *pci_dev; +#ifdef DEBUG_IDE + printf("bmdma: writeb 0x%02x : 0x%02x\n", addr, val); +#endif + switch(addr & 3) { + case 1: + pci_dev = bm->pci_dev; + if (pci_dev->type == IDE_TYPE_CMD646) { + pci_dev->dev.config[MRDMODE] = + (pci_dev->dev.config[MRDMODE] & ~0x30) | (val & 0x30); + cmd646_update_irq(pci_dev); + } + break; + case 2: + bm->status = (val & 0x60) | (bm->status & 1) | (bm->status & ~val & 0x06); + break; + case 3: + pci_dev = bm->pci_dev; + if (pci_dev->type == IDE_TYPE_CMD646) { + if (bm == &pci_dev->bmdma[0]) + pci_dev->dev.config[UDIDETCR0] = val; + else + pci_dev->dev.config[UDIDETCR1] = val; + } + break; + } +} + +static uint32_t bmdma_addr_readb(void *opaque, uint32_t addr) +{ + BMDMAState *bm = opaque; + uint32_t val; + val = (bm->addr >> ((addr & 3) * 8)) & 0xff; +#ifdef DEBUG_IDE + printf("%s: 0x%08x\n", __func__, val); +#endif + return val; +} + +static void bmdma_addr_writeb(void *opaque, uint32_t addr, uint32_t val) +{ + BMDMAState *bm = opaque; + int shift = (addr & 3) * 8; +#ifdef DEBUG_IDE + printf("%s: 0x%08x\n", __func__, val); +#endif + bm->addr &= ~(0xFF << shift); + bm->addr |= ((val & 0xFF) << shift) & ~3; + bm->cur_addr = bm->addr; +} + +static uint32_t bmdma_addr_readw(void *opaque, uint32_t addr) +{ + BMDMAState *bm = opaque; + uint32_t val; + val = (bm->addr >> ((addr & 3) * 8)) & 0xffff; +#ifdef DEBUG_IDE + printf("%s: 0x%08x\n", __func__, val); +#endif + return val; +} + +static void bmdma_addr_writew(void *opaque, uint32_t addr, uint32_t val) +{ + BMDMAState *bm = opaque; + int shift = (addr & 3) * 8; +#ifdef DEBUG_IDE + printf("%s: 0x%08x\n", __func__, val); +#endif + bm->addr &= ~(0xFFFF << shift); + bm->addr |= ((val & 0xFFFF) << shift) & ~3; + bm->cur_addr = bm->addr; +} + +static uint32_t bmdma_addr_readl(void *opaque, uint32_t addr) +{ + BMDMAState *bm = opaque; + uint32_t val; + val = bm->addr; +#ifdef DEBUG_IDE + printf("%s: 0x%08x\n", __func__, val); +#endif + return val; +} + +static void bmdma_addr_writel(void *opaque, uint32_t addr, uint32_t val) +{ + BMDMAState *bm = opaque; +#ifdef DEBUG_IDE + printf("%s: 0x%08x\n", __func__, val); +#endif + bm->addr = val & ~3; + bm->cur_addr = bm->addr; +} + +static void bmdma_map(PCIDevice *pci_dev, int region_num, + uint32_t addr, uint32_t size, int type) +{ + PCIIDEState *d = (PCIIDEState *)pci_dev; + int i; + + for(i = 0;i < 2; i++) { + BMDMAState *bm = &d->bmdma[i]; + d->bus[i].bmdma = bm; + bm->pci_dev = DO_UPCAST(PCIIDEState, dev, pci_dev); + bm->bus = d->bus+i; + qemu_add_vm_change_state_handler(ide_dma_restart_cb, bm); + + register_ioport_write(addr, 1, 1, bmdma_cmd_writeb, bm); + + register_ioport_write(addr + 1, 3, 1, bmdma_writeb, bm); + register_ioport_read(addr, 4, 1, bmdma_readb, bm); + + register_ioport_write(addr + 4, 4, 1, bmdma_addr_writeb, bm); + register_ioport_read(addr + 4, 4, 1, bmdma_addr_readb, bm); + register_ioport_write(addr + 4, 4, 2, bmdma_addr_writew, bm); + register_ioport_read(addr + 4, 4, 2, bmdma_addr_readw, bm); + register_ioport_write(addr + 4, 4, 4, bmdma_addr_writel, bm); + register_ioport_read(addr + 4, 4, 4, bmdma_addr_readl, bm); + addr += 8; + } +} + +static void pci_ide_save(QEMUFile* f, void *opaque) +{ + PCIIDEState *d = opaque; + int i; + + pci_device_save(&d->dev, f); + + for(i = 0; i < 2; i++) { + BMDMAState *bm = &d->bmdma[i]; + uint8_t ifidx; + qemu_put_8s(f, &bm->cmd); + qemu_put_8s(f, &bm->status); + qemu_put_be32s(f, &bm->addr); + qemu_put_sbe64s(f, &bm->sector_num); + qemu_put_be32s(f, &bm->nsector); + ifidx = bm->unit + 2*i; + qemu_put_8s(f, &ifidx); + /* XXX: if a transfer is pending, we do not save it yet */ + } + + /* per IDE interface data */ + for(i = 0; i < 2; i++) { + idebus_save(f, &d->bus[i]); + } + + /* per IDE drive data */ + for(i = 0; i < 2; i++) { + ide_save(f, &d->bus[i].ifs[0]); + ide_save(f, &d->bus[i].ifs[1]); + } +} + +static int pci_ide_load(QEMUFile* f, void *opaque, int version_id) +{ + PCIIDEState *d = opaque; + int ret, i; + + if (version_id != 2 && version_id != 3) + return -EINVAL; + ret = pci_device_load(&d->dev, f); + if (ret < 0) + return ret; + + for(i = 0; i < 2; i++) { + BMDMAState *bm = &d->bmdma[i]; + uint8_t ifidx; + qemu_get_8s(f, &bm->cmd); + qemu_get_8s(f, &bm->status); + qemu_get_be32s(f, &bm->addr); + qemu_get_sbe64s(f, &bm->sector_num); + qemu_get_be32s(f, &bm->nsector); + qemu_get_8s(f, &ifidx); + bm->unit = ifidx & 1; + /* XXX: if a transfer is pending, we do not save it yet */ + } + + /* per IDE interface data */ + for(i = 0; i < 2; i++) { + idebus_load(f, &d->bus[i], version_id); + } + + /* per IDE drive data */ + for(i = 0; i < 2; i++) { + ide_load(f, &d->bus[i].ifs[0], version_id); + ide_load(f, &d->bus[i].ifs[1], version_id); + } + return 0; +} + +/* XXX: call it also when the MRDMODE is changed from the PCI config + registers */ +static void cmd646_update_irq(PCIIDEState *d) +{ + int pci_level; + pci_level = ((d->dev.config[MRDMODE] & MRDMODE_INTR_CH0) && + !(d->dev.config[MRDMODE] & MRDMODE_BLK_CH0)) || + ((d->dev.config[MRDMODE] & MRDMODE_INTR_CH1) && + !(d->dev.config[MRDMODE] & MRDMODE_BLK_CH1)); + qemu_set_irq(d->dev.irq[0], 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; + int irq_mask; + + irq_mask = MRDMODE_INTR_CH0 << channel; + if (level) + d->dev.config[MRDMODE] |= irq_mask; + else + d->dev.config[MRDMODE] &= ~irq_mask; + cmd646_update_irq(d); +} + +static void cmd646_reset(void *opaque) +{ + PCIIDEState *d = opaque; + unsigned int i; + + for (i = 0; i < 2; i++) + ide_dma_cancel(&d->bmdma[i]); +} + +/* CMD646 PCI IDE controller */ +void pci_cmd646_ide_init(PCIBus *bus, BlockDriverState **hd_table, + int secondary_ide_enabled) +{ + PCIIDEState *d; + uint8_t *pci_conf; + qemu_irq *irq; + + d = (PCIIDEState *)pci_register_device(bus, "CMD646 IDE", + sizeof(PCIIDEState), + -1, + NULL, NULL); + d->type = IDE_TYPE_CMD646; + pci_conf = d->dev.config; + pci_config_set_vendor_id(pci_conf, PCI_VENDOR_ID_CMD); + pci_config_set_device_id(pci_conf, PCI_DEVICE_ID_CMD_646); + + pci_conf[0x08] = 0x07; // IDE controller revision + pci_conf[0x09] = 0x8f; + + pci_config_set_class(pci_conf, PCI_CLASS_STORAGE_IDE); + pci_conf[PCI_HEADER_TYPE] = PCI_HEADER_TYPE_NORMAL; // header_type + + pci_conf[0x51] = 0x04; // enable IDE0 + if (secondary_ide_enabled) { + /* XXX: if not enabled, really disable the seconday IDE controller */ + pci_conf[0x51] |= 0x08; /* enable IDE1 */ + } + + pci_register_bar((PCIDevice *)d, 0, 0x8, + PCI_ADDRESS_SPACE_IO, ide_map); + pci_register_bar((PCIDevice *)d, 1, 0x4, + PCI_ADDRESS_SPACE_IO, ide_map); + pci_register_bar((PCIDevice *)d, 2, 0x8, + PCI_ADDRESS_SPACE_IO, ide_map); + pci_register_bar((PCIDevice *)d, 3, 0x4, + PCI_ADDRESS_SPACE_IO, ide_map); + pci_register_bar((PCIDevice *)d, 4, 0x10, + PCI_ADDRESS_SPACE_IO, bmdma_map); + + pci_conf[0x3d] = 0x01; // interrupt on pin 1 + + irq = qemu_allocate_irqs(cmd646_set_irq, d, 2); + ide_init2(&d->bus[0], hd_table[0], hd_table[1], irq[0]); + ide_init2(&d->bus[1], hd_table[2], hd_table[3], irq[1]); + + register_savevm("ide", 0, 3, pci_ide_save, pci_ide_load, d); + qemu_register_reset(cmd646_reset, d); + cmd646_reset(d); +} + +static void piix3_reset(void *opaque) +{ + PCIIDEState *d = opaque; + uint8_t *pci_conf = d->dev.config; + int i; + + for (i = 0; i < 2; i++) + ide_dma_cancel(&d->bmdma[i]); + + pci_conf[0x04] = 0x00; + pci_conf[0x05] = 0x00; + pci_conf[0x06] = 0x80; /* FBC */ + pci_conf[0x07] = 0x02; // PCI_status_devsel_medium + pci_conf[0x20] = 0x01; /* BMIBA: 20-23h */ +} + +/* hd_table must contain 4 block drivers */ +/* NOTE: for the PIIX3, the IRQs and IOports are hardcoded */ +void pci_piix3_ide_init(PCIBus *bus, BlockDriverState **hd_table, int devfn, + qemu_irq *pic) +{ + PCIIDEState *d; + uint8_t *pci_conf; + int i; + + /* register a function 1 of PIIX3 */ + d = (PCIIDEState *)pci_register_device(bus, "PIIX3 IDE", + sizeof(PCIIDEState), + devfn, + NULL, NULL); + d->type = IDE_TYPE_PIIX3; + + pci_conf = d->dev.config; + pci_config_set_vendor_id(pci_conf, PCI_VENDOR_ID_INTEL); + pci_config_set_device_id(pci_conf, PCI_DEVICE_ID_INTEL_82371SB_1); + pci_conf[0x09] = 0x80; // legacy ATA mode + pci_config_set_class(pci_conf, PCI_CLASS_STORAGE_IDE); + pci_conf[PCI_HEADER_TYPE] = PCI_HEADER_TYPE_NORMAL; // header_type + + qemu_register_reset(piix3_reset, d); + piix3_reset(d); + + pci_register_bar((PCIDevice *)d, 4, 0x10, + PCI_ADDRESS_SPACE_IO, bmdma_map); + + ide_init2(&d->bus[0], hd_table[0], hd_table[1], isa_reserve_irq(14)); + ide_init2(&d->bus[1], hd_table[2], hd_table[3], isa_reserve_irq(15)); + ide_init_ioport(&d->bus[0], 0x1f0, 0x3f6); + ide_init_ioport(&d->bus[1], 0x170, 0x376); + + for (i = 0; i < 4; i++) + if (hd_table[i]) + hd_table[i]->private = &d->dev; + + register_savevm("ide", 0, 3, pci_ide_save, pci_ide_load, d); +} + +/* hd_table must contain 4 block drivers */ +/* NOTE: for the PIIX4, the IRQs and IOports are hardcoded */ +void pci_piix4_ide_init(PCIBus *bus, BlockDriverState **hd_table, int devfn, + qemu_irq *pic) +{ + PCIIDEState *d; + uint8_t *pci_conf; + + /* register a function 1 of PIIX4 */ + d = (PCIIDEState *)pci_register_device(bus, "PIIX4 IDE", + sizeof(PCIIDEState), + devfn, + NULL, NULL); + d->type = IDE_TYPE_PIIX4; + + pci_conf = d->dev.config; + pci_config_set_vendor_id(pci_conf, PCI_VENDOR_ID_INTEL); + pci_config_set_device_id(pci_conf, PCI_DEVICE_ID_INTEL_82371AB); + pci_conf[0x09] = 0x80; // legacy ATA mode + pci_config_set_class(pci_conf, PCI_CLASS_STORAGE_IDE); + pci_conf[PCI_HEADER_TYPE] = PCI_HEADER_TYPE_NORMAL; // header_type + + qemu_register_reset(piix3_reset, d); + piix3_reset(d); + + pci_register_bar((PCIDevice *)d, 4, 0x10, + PCI_ADDRESS_SPACE_IO, bmdma_map); + + /* + * These should call isa_reserve_irq() instead when MIPS supports it + */ + ide_init2(&d->bus[0], hd_table[0], hd_table[1], pic[14]); + ide_init2(&d->bus[1], hd_table[2], hd_table[3], pic[15]); + ide_init_ioport(&d->bus[0], 0x1f0, 0x3f6); + ide_init_ioport(&d->bus[1], 0x170, 0x376); + + register_savevm("ide", 0, 3, pci_ide_save, pci_ide_load, d); +} + |