esp: move PCI emulation to a new file esp-pci.c

sparc machines loose ability to instanciate PCI ESP SCSI adapter,
which is not a big loose as they don't have PCI bus support.

Signed-off-by: Hervé Poussineau <hpoussin@reactos.org>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>

1 files changed, 0 insertions, 362 deletions

diff --git a/hw/esp.c b/hw/esp.c
index 60c2221580..52c46e615f 100644
--- a/hw/esp.c
+++ b/hw/esp.c
@@ -24,7 +24,6 @@
  */
 
 #include "sysbus.h"
-#include "pci.h"
 #include "esp.h"
 #include "trace.h"
 #include "qemu-log.h"
@@ -714,370 +713,9 @@ static const TypeInfo sysbus_esp_info = {
     .class_init    = sysbus_esp_class_init,
 };
 
-#define DMA_CMD   0x0
-#define DMA_STC   0x1
-#define DMA_SPA   0x2
-#define DMA_WBC   0x3
-#define DMA_WAC   0x4
-#define DMA_STAT  0x5
-#define DMA_SMDLA 0x6
-#define DMA_WMAC  0x7
-
-#define DMA_CMD_MASK   0x03
-#define DMA_CMD_DIAG   0x04
-#define DMA_CMD_MDL    0x10
-#define DMA_CMD_INTE_P 0x20
-#define DMA_CMD_INTE_D 0x40
-#define DMA_CMD_DIR    0x80
-
-#define DMA_STAT_PWDN    0x01
-#define DMA_STAT_ERROR   0x02
-#define DMA_STAT_ABORT   0x04
-#define DMA_STAT_DONE    0x08
-#define DMA_STAT_SCSIINT 0x10
-#define DMA_STAT_BCMBLT  0x20
-
-#define SBAC_STATUS 0x1000
-
-typedef struct PCIESPState {
-    PCIDevice dev;
-    MemoryRegion io;
-    uint32_t dma_regs[8];
-    uint32_t sbac;
-    ESPState esp;
-} PCIESPState;
-
-static void esp_pci_handle_idle(PCIESPState *pci, uint32_t val)
-{
-    trace_esp_pci_dma_idle(val);
-    esp_dma_enable(&pci->esp, 0, 0);
-}
-
-static void esp_pci_handle_blast(PCIESPState *pci, uint32_t val)
-{
-    trace_esp_pci_dma_blast(val);
-    qemu_log_mask(LOG_UNIMP, "am53c974: cmd BLAST not implemented\n");
-}
-
-static void esp_pci_handle_abort(PCIESPState *pci, uint32_t val)
-{
-    trace_esp_pci_dma_abort(val);
-    if (pci->esp.current_req) {
-        scsi_req_cancel(pci->esp.current_req);
-    }
-}
-
-static void esp_pci_handle_start(PCIESPState *pci, uint32_t val)
-{
-    trace_esp_pci_dma_start(val);
-
-    pci->dma_regs[DMA_WBC] = pci->dma_regs[DMA_STC];
-    pci->dma_regs[DMA_WAC] = pci->dma_regs[DMA_SPA];
-    pci->dma_regs[DMA_WMAC] = pci->dma_regs[DMA_SMDLA];
-
-    pci->dma_regs[DMA_STAT] &= ~(DMA_STAT_BCMBLT | DMA_STAT_SCSIINT
-                               | DMA_STAT_DONE | DMA_STAT_ABORT
-                               | DMA_STAT_ERROR | DMA_STAT_PWDN);
-
-    esp_dma_enable(&pci->esp, 0, 1);
-}
-
-static void esp_pci_dma_write(PCIESPState *pci, uint32_t saddr, uint32_t val)
-{
-    trace_esp_pci_dma_write(saddr, pci->dma_regs[saddr], val);
-    switch (saddr) {
-    case DMA_CMD:
-        pci->dma_regs[saddr] = val;
-        switch (val & DMA_CMD_MASK) {
-        case 0x0: /* IDLE */
-            esp_pci_handle_idle(pci, val);
-            break;
-        case 0x1: /* BLAST */
-            esp_pci_handle_blast(pci, val);
-            break;
-        case 0x2: /* ABORT */
-            esp_pci_handle_abort(pci, val);
-            break;
-        case 0x3: /* START */
-            esp_pci_handle_start(pci, val);
-            break;
-        default: /* can't happen */
-            abort();
-        }
-        break;
-    case DMA_STC:
-    case DMA_SPA:
-    case DMA_SMDLA:
-        pci->dma_regs[saddr] = val;
-        break;
-    case DMA_STAT:
-        if (!(pci->sbac & SBAC_STATUS)) {
-            /* clear some bits on write */
-            uint32_t mask = DMA_STAT_ERROR | DMA_STAT_ABORT | DMA_STAT_DONE;
-            pci->dma_regs[DMA_STAT] &= ~(val & mask);
-        }
-        break;
-    default:
-        trace_esp_pci_error_invalid_write_dma(val, saddr);
-        return;
-    }
-}
-
-static uint32_t esp_pci_dma_read(PCIESPState *pci, uint32_t saddr)
-{
-    uint32_t val;
-
-    val = pci->dma_regs[saddr];
-    if (saddr == DMA_STAT) {
-        if (pci->esp.rregs[ESP_RSTAT] & STAT_INT) {
-            val |= DMA_STAT_SCSIINT;
-        }
-        if (pci->sbac & SBAC_STATUS) {
-            pci->dma_regs[DMA_STAT] &= ~(DMA_STAT_ERROR | DMA_STAT_ABORT |
-                                         DMA_STAT_DONE);
-        }
-    }
-
-    trace_esp_pci_dma_read(saddr, val);
-    return val;
-}
-
-static void esp_pci_io_write(void *opaque, target_phys_addr_t addr,
-                             uint64_t val, unsigned int size)
-{
-    PCIESPState *pci = opaque;
-
-    if (size < 4 || addr & 3) {
-        /* need to upgrade request: we only support 4-bytes accesses */
-        uint32_t current = 0, mask;
-        int shift;
-
-        if (addr < 0x40) {
-            current = pci->esp.wregs[addr >> 2];
-        } else if (addr < 0x60) {
-            current = pci->dma_regs[(addr - 0x40) >> 2];
-        } else if (addr < 0x74) {
-            current = pci->sbac;
-        }
-
-        shift = (4 - size) * 8;
-        mask = (~(uint32_t)0 << shift) >> shift;
-
-        shift = ((4 - (addr & 3)) & 3) * 8;
-        val <<= shift;
-        val |= current & ~(mask << shift);
-        addr &= ~3;
-        size = 4;
-    }
-
-    if (addr < 0x40) {
-        /* SCSI core reg */
-        esp_reg_write(&pci->esp, addr >> 2, val);
-    } else if (addr < 0x60) {
-        /* PCI DMA CCB */
-        esp_pci_dma_write(pci, (addr - 0x40) >> 2, val);
-    } else if (addr == 0x70) {
-        /* DMA SCSI Bus and control */
-        trace_esp_pci_sbac_write(pci->sbac, val);
-        pci->sbac = val;
-    } else {
-        trace_esp_pci_error_invalid_write((int)addr);
-    }
-}
-
-static uint64_t esp_pci_io_read(void *opaque, target_phys_addr_t addr,
-                                unsigned int size)
-{
-    PCIESPState *pci = opaque;
-    uint32_t ret;
-
-    if (addr < 0x40) {
-        /* SCSI core reg */
-        ret = esp_reg_read(&pci->esp, addr >> 2);
-    } else if (addr < 0x60) {
-        /* PCI DMA CCB */
-        ret = esp_pci_dma_read(pci, (addr - 0x40) >> 2);
-    } else if (addr == 0x70) {
-        /* DMA SCSI Bus and control */
-        trace_esp_pci_sbac_read(pci->sbac);
-        ret = pci->sbac;
-    } else {
-        /* Invalid region */
-        trace_esp_pci_error_invalid_read((int)addr);
-        ret = 0;
-    }
-
-    /* give only requested data */
-    ret >>= (addr & 3) * 8;
-    ret &= ~(~(uint64_t)0 << (8 * size));
-
-    return ret;
-}
-
-static void esp_pci_dma_memory_rw(PCIESPState *pci, uint8_t *buf, int len,
-                                  DMADirection dir)
-{
-    dma_addr_t addr;
-    DMADirection expected_dir;
-
-    if (pci->dma_regs[DMA_CMD] & DMA_CMD_DIR) {
-        expected_dir = DMA_DIRECTION_FROM_DEVICE;
-    } else {
-        expected_dir = DMA_DIRECTION_TO_DEVICE;
-    }
-
-    if (dir != expected_dir) {
-        trace_esp_pci_error_invalid_dma_direction();
-        return;
-    }
-
-    if (pci->dma_regs[DMA_STAT] & DMA_CMD_MDL) {
-        qemu_log_mask(LOG_UNIMP, "am53c974: MDL transfer not implemented\n");
-    }
-
-    addr = pci->dma_regs[DMA_SPA];
-    if (pci->dma_regs[DMA_WBC] < len) {
-        len = pci->dma_regs[DMA_WBC];
-    }
-
-    pci_dma_rw(&pci->dev, addr, buf, len, dir);
-
-    /* update status registers */
-    pci->dma_regs[DMA_WBC] -= len;
-    pci->dma_regs[DMA_WAC] += len;
-}
-
-static void esp_pci_dma_memory_read(void *opaque, uint8_t *buf, int len)
-{
-    PCIESPState *pci = opaque;
-    esp_pci_dma_memory_rw(pci, buf, len, DMA_DIRECTION_TO_DEVICE);
-}
-
-static void esp_pci_dma_memory_write(void *opaque, uint8_t *buf, int len)
-{
-    PCIESPState *pci = opaque;
-    esp_pci_dma_memory_rw(pci, buf, len, DMA_DIRECTION_FROM_DEVICE);
-}
-
-static const MemoryRegionOps esp_pci_io_ops = {
-    .read = esp_pci_io_read,
-    .write = esp_pci_io_write,
-    .endianness = DEVICE_LITTLE_ENDIAN,
-    .impl = {
-        .min_access_size = 1,
-        .max_access_size = 4,
-    },
-};
-
-static void esp_pci_hard_reset(DeviceState *dev)
-{
-    PCIESPState *pci = DO_UPCAST(PCIESPState, dev.qdev, dev);
-    esp_hard_reset(&pci->esp);
-    pci->dma_regs[DMA_CMD] &= ~(DMA_CMD_DIR | DMA_CMD_INTE_D | DMA_CMD_INTE_P
-                              | DMA_CMD_MDL | DMA_CMD_DIAG | DMA_CMD_MASK);
-    pci->dma_regs[DMA_WBC] &= ~0xffff;
-    pci->dma_regs[DMA_WAC] = 0xffffffff;
-    pci->dma_regs[DMA_STAT] &= ~(DMA_STAT_BCMBLT | DMA_STAT_SCSIINT
-                               | DMA_STAT_DONE | DMA_STAT_ABORT
-                               | DMA_STAT_ERROR);
-    pci->dma_regs[DMA_WMAC] = 0xfffffffd;
-}
-
-static const VMStateDescription vmstate_esp_pci_scsi = {
-    .name = "pciespscsi",
-    .version_id = 0,
-    .minimum_version_id = 0,
-    .minimum_version_id_old = 0,
-    .fields = (VMStateField[]) {
-        VMSTATE_PCI_DEVICE(dev, PCIESPState),
-        VMSTATE_BUFFER_UNSAFE(dma_regs, PCIESPState, 0, 8 * sizeof(uint32_t)),
-        VMSTATE_STRUCT(esp, PCIESPState, 0, vmstate_esp, ESPState),
-        VMSTATE_END_OF_LIST()
-    }
-};
-
-static void esp_pci_command_complete(SCSIRequest *req, uint32_t status,
-                                     size_t resid)
-{
-    ESPState *s = req->hba_private;
-    PCIESPState *pci = container_of(s, PCIESPState, esp);
-
-    esp_command_complete(req, status, resid);
-    pci->dma_regs[DMA_WBC] = 0;
-    pci->dma_regs[DMA_STAT] |= DMA_STAT_DONE;
-}
-
-static const struct SCSIBusInfo esp_pci_scsi_info = {
-    .tcq = false,
-    .max_target = ESP_MAX_DEVS,
-    .max_lun = 7,
-
-    .transfer_data = esp_transfer_data,
-    .complete = esp_pci_command_complete,
-    .cancel = esp_request_cancelled,
-};
-
-static int esp_pci_scsi_init(PCIDevice *dev)
-{
-    PCIESPState *pci = DO_UPCAST(PCIESPState, dev, dev);
-    ESPState *s = &pci->esp;
-    uint8_t *pci_conf;
-
-    pci_conf = pci->dev.config;
-
-    /* Interrupt pin A */
-    pci_conf[PCI_INTERRUPT_PIN] = 0x01;
-
-    s->dma_memory_read = esp_pci_dma_memory_read;
-    s->dma_memory_write = esp_pci_dma_memory_write;
-    s->dma_opaque = pci;
-    s->chip_id = TCHI_AM53C974;
-    memory_region_init_io(&pci->io, &esp_pci_io_ops, pci, "esp-io", 0x80);
-
-    pci_register_bar(&pci->dev, 0, PCI_BASE_ADDRESS_SPACE_IO, &pci->io);
-    s->irq = pci->dev.irq[0];
-
-    scsi_bus_new(&s->bus, &dev->qdev, &esp_pci_scsi_info);
-    if (!dev->qdev.hotplugged) {
-        return scsi_bus_legacy_handle_cmdline(&s->bus);
-    }
-    return 0;
-}
-
-static void esp_pci_scsi_uninit(PCIDevice *d)
-{
-    PCIESPState *pci = DO_UPCAST(PCIESPState, dev, d);
-
-    memory_region_destroy(&pci->io);
-}
-
-static void esp_pci_class_init(ObjectClass *klass, void *data)
-{
-    DeviceClass *dc = DEVICE_CLASS(klass);
-    PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
-
-    k->init = esp_pci_scsi_init;
-    k->exit = esp_pci_scsi_uninit;
-    k->vendor_id = PCI_VENDOR_ID_AMD;
-    k->device_id = PCI_DEVICE_ID_AMD_SCSI;
-    k->revision = 0x10;
-    k->class_id = PCI_CLASS_STORAGE_SCSI;
-    dc->desc = "AMD Am53c974 PCscsi-PCI SCSI adapter";
-    dc->reset = esp_pci_hard_reset;
-    dc->vmsd = &vmstate_esp_pci_scsi;
-}
-
-static const TypeInfo esp_pci_info = {
-    .name = "am53c974",
-    .parent = TYPE_PCI_DEVICE,
-    .instance_size = sizeof(PCIESPState),
-    .class_init = esp_pci_class_init,
-};
-
 static void esp_register_types(void)
 {
     type_register_static(&sysbus_esp_info);
-    type_register_static(&esp_pci_info);
 }
 
 type_init(esp_register_types)