* THE SOFTWARE.
*/
-#include "hw.h"
-#include "scsi-disk.h"
+#include "sysbus.h"
#include "scsi.h"
+#include "esp.h"
/* debug ESP card */
//#define DEBUG_ESP
*/
#ifdef DEBUG_ESP
-#define DPRINTF(fmt, args...) \
-do { printf("ESP: " fmt , ##args); } while (0)
+#define DPRINTF(fmt, ...) \
+ do { printf("ESP: " fmt , ## __VA_ARGS__); } while (0)
#else
-#define DPRINTF(fmt, args...) do {} while (0)
+#define DPRINTF(fmt, ...) do {} while (0)
#endif
+#define ESP_ERROR(fmt, ...) \
+ do { printf("ESP ERROR: %s: " fmt, __func__ , ## __VA_ARGS__); } while (0)
+
#define ESP_REGS 16
-#define TI_BUFSZ 32
+#define TI_BUFSZ 16
typedef struct ESPState ESPState;
struct ESPState {
+ SysBusDevice busdev;
uint32_t it_shift;
qemu_irq irq;
uint8_t rregs[ESP_REGS];
uint8_t ti_buf[TI_BUFSZ];
uint32_t sense;
uint32_t dma;
- SCSIDevice *scsi_dev[ESP_MAX_DEVS];
+ SCSIBus bus;
SCSIDevice *current_dev;
uint8_t cmdbuf[TI_BUFSZ];
uint32_t cmdlen;
uint8_t *async_buf;
uint32_t async_len;
- espdma_memory_read_write dma_memory_read;
- espdma_memory_read_write dma_memory_write;
+ ESPDMAMemoryReadWriteFunc dma_memory_read;
+ ESPDMAMemoryReadWriteFunc dma_memory_write;
void *dma_opaque;
};
#define CMD_TI 0x10
#define CMD_ICCS 0x11
#define CMD_MSGACC 0x12
+#define CMD_PAD 0x18
#define CMD_SATN 0x1a
+#define CMD_SEL 0x41
#define CMD_SELATN 0x42
#define CMD_SELATNS 0x43
#define CMD_ENSEL 0x44
#define STAT_DI 0x01
#define STAT_CD 0x02
#define STAT_ST 0x03
-#define STAT_MI 0x06
-#define STAT_MO 0x07
+#define STAT_MO 0x06
+#define STAT_MI 0x07
#define STAT_PIO_MASK 0x06
#define STAT_TC 0x10
#define STAT_GE 0x40
#define STAT_INT 0x80
+#define BUSID_DID 0x07
+
#define INTR_FC 0x08
#define INTR_BS 0x10
#define INTR_DC 0x20
#define CFG1_RESREPT 0x40
-#define CFG2_MASK 0x15
-
#define TCHI_FAS100A 0x4
static void esp_raise_irq(ESPState *s)
if (!(s->rregs[ESP_RSTAT] & STAT_INT)) {
s->rregs[ESP_RSTAT] |= STAT_INT;
qemu_irq_raise(s->irq);
+ DPRINTF("Raise IRQ\n");
}
}
if (s->rregs[ESP_RSTAT] & STAT_INT) {
s->rregs[ESP_RSTAT] &= ~STAT_INT;
qemu_irq_lower(s->irq);
+ DPRINTF("Lower IRQ\n");
}
}
uint32_t dmalen;
int target;
- dmalen = s->rregs[ESP_TCLO] | (s->rregs[ESP_TCMID] << 8);
- target = s->wregs[ESP_WBUSID] & 7;
- DPRINTF("get_cmd: len %d target %d\n", dmalen, target);
+ target = s->wregs[ESP_WBUSID] & BUSID_DID;
if (s->dma) {
+ dmalen = s->rregs[ESP_TCLO] | (s->rregs[ESP_TCMID] << 8);
s->dma_memory_read(s->dma_opaque, buf, dmalen);
} else {
+ dmalen = s->ti_size;
+ memcpy(buf, s->ti_buf, dmalen);
buf[0] = 0;
- memcpy(&buf[1], s->ti_buf, dmalen);
- dmalen++;
}
+ DPRINTF("get_cmd: len %d target %d\n", dmalen, target);
s->ti_size = 0;
s->ti_rptr = 0;
if (s->current_dev) {
/* Started a new command before the old one finished. Cancel it. */
- s->current_dev->cancel_io(s->current_dev, 0);
+ s->current_dev->info->cancel_io(s->current_dev, 0);
s->async_len = 0;
}
- if (target >= ESP_MAX_DEVS || !s->scsi_dev[target]) {
+ if (target >= ESP_MAX_DEVS || !s->bus.devs[target]) {
// No such drive
s->rregs[ESP_RSTAT] = 0;
s->rregs[ESP_RINTR] = INTR_DC;
esp_raise_irq(s);
return 0;
}
- s->current_dev = s->scsi_dev[target];
+ s->current_dev = s->bus.devs[target];
return dmalen;
}
-static void do_cmd(ESPState *s, uint8_t *buf)
+static void do_busid_cmd(ESPState *s, uint8_t *buf, uint8_t busid)
{
int32_t datalen;
int lun;
- DPRINTF("do_cmd: busid 0x%x\n", buf[0]);
- lun = buf[0] & 7;
- datalen = s->current_dev->send_command(s->current_dev, 0, &buf[1], lun);
+ DPRINTF("do_busid_cmd: busid 0x%x\n", busid);
+ lun = busid & 7;
+ datalen = s->current_dev->info->send_command(s->current_dev, 0, buf, lun);
s->ti_size = datalen;
if (datalen != 0) {
s->rregs[ESP_RSTAT] = STAT_TC;
s->dma_counter = 0;
if (datalen > 0) {
s->rregs[ESP_RSTAT] |= STAT_DI;
- s->current_dev->read_data(s->current_dev, 0);
+ s->current_dev->info->read_data(s->current_dev, 0);
} else {
s->rregs[ESP_RSTAT] |= STAT_DO;
- s->current_dev->write_data(s->current_dev, 0);
+ s->current_dev->info->write_data(s->current_dev, 0);
}
}
s->rregs[ESP_RINTR] = INTR_BS | INTR_FC;
esp_raise_irq(s);
}
+static void do_cmd(ESPState *s, uint8_t *buf)
+{
+ uint8_t busid = buf[0];
+
+ do_busid_cmd(s, &buf[1], busid);
+}
+
static void handle_satn(ESPState *s)
{
uint8_t buf[32];
do_cmd(s, buf);
}
+static void handle_s_without_atn(ESPState *s)
+{
+ uint8_t buf[32];
+ int len;
+
+ len = get_cmd(s, buf);
+ if (len) {
+ do_busid_cmd(s, buf, 0);
+ }
+}
+
static void handle_satn_stop(ESPState *s)
{
s->cmdlen = get_cmd(s, s->cmdbuf);
if (s->async_len == 0) {
if (to_device) {
// ti_size is negative
- s->current_dev->write_data(s->current_dev, 0);
+ s->current_dev->info->write_data(s->current_dev, 0);
} else {
- s->current_dev->read_data(s->current_dev, 0);
+ s->current_dev->info->read_data(s->current_dev, 0);
/* If there is still data to be read from the device then
- complete the DMA operation immeriately. Otherwise defer
+ complete the DMA operation immediately. Otherwise defer
until the scsi layer has completed. */
if (s->dma_left == 0 && s->ti_size > 0) {
esp_dma_done(s);
}
}
-static void esp_command_complete(void *opaque, int reason, uint32_t tag,
+static void esp_command_complete(SCSIBus *bus, int reason, uint32_t tag,
uint32_t arg)
{
- ESPState *s = (ESPState *)opaque;
+ ESPState *s = DO_UPCAST(ESPState, busdev.qdev, bus->qbus.parent);
if (reason == SCSI_REASON_DONE) {
DPRINTF("SCSI Command complete\n");
} else {
DPRINTF("transfer %d/%d\n", s->dma_left, s->ti_size);
s->async_len = arg;
- s->async_buf = s->current_dev->get_buf(s->current_dev, 0);
+ s->async_buf = s->current_dev->info->get_buf(s->current_dev, 0);
if (s->dma_left) {
esp_do_dma(s);
} else if (s->dma_counter != 0 && s->ti_size <= 0) {
}
}
-static void esp_reset(void *opaque)
+static void esp_reset(DeviceState *d)
{
- ESPState *s = opaque;
-
- esp_lower_irq(s);
+ ESPState *s = container_of(d, ESPState, busdev.qdev);
memset(s->rregs, 0, ESP_REGS);
memset(s->wregs, 0, ESP_REGS);
s->ti_wptr = 0;
s->dma = 0;
s->do_cmd = 0;
+
+ s->rregs[ESP_CFG1] = 7;
}
static void parent_esp_reset(void *opaque, int irq, int level)
static uint32_t esp_mem_readb(void *opaque, target_phys_addr_t addr)
{
ESPState *s = opaque;
- uint32_t saddr;
+ uint32_t saddr, old_val;
- saddr = (addr >> s->it_shift) & (ESP_REGS - 1);
+ saddr = addr >> s->it_shift;
DPRINTF("read reg[%d]: 0x%2.2x\n", saddr, s->rregs[saddr]);
switch (saddr) {
case ESP_FIFO:
if (s->ti_size > 0) {
s->ti_size--;
if ((s->rregs[ESP_RSTAT] & STAT_PIO_MASK) == 0) {
- /* Data in/out. */
- fprintf(stderr, "esp: PIO data read not implemented\n");
+ /* Data out. */
+ ESP_ERROR("PIO data read not implemented\n");
s->rregs[ESP_FIFO] = 0;
} else {
s->rregs[ESP_FIFO] = s->ti_buf[s->ti_rptr++];
}
break;
case ESP_RINTR:
- // Clear interrupt/error status bits
- s->rregs[ESP_RSTAT] &= ~(STAT_GE | STAT_PE);
+ /* Clear sequence step, interrupt register and all status bits
+ except TC */
+ old_val = s->rregs[ESP_RINTR];
+ s->rregs[ESP_RINTR] = 0;
+ s->rregs[ESP_RSTAT] &= ~STAT_TC;
+ s->rregs[ESP_RSEQ] = SEQ_CD;
esp_lower_irq(s);
- break;
+
+ return old_val;
default:
break;
}
ESPState *s = opaque;
uint32_t saddr;
- saddr = (addr >> s->it_shift) & (ESP_REGS - 1);
+ saddr = addr >> s->it_shift;
DPRINTF("write reg[%d]: 0x%2.2x -> 0x%2.2x\n", saddr, s->wregs[saddr],
val);
switch (saddr) {
case ESP_FIFO:
if (s->do_cmd) {
s->cmdbuf[s->cmdlen++] = val & 0xff;
- } else if ((s->rregs[ESP_RSTAT] & STAT_PIO_MASK) == 0) {
- uint8_t buf;
- buf = val & 0xff;
- s->ti_size--;
- fprintf(stderr, "esp: PIO data write not implemented\n");
+ } else if (s->ti_size == TI_BUFSZ - 1) {
+ ESP_ERROR("fifo overrun\n");
} else {
s->ti_size++;
s->ti_buf[s->ti_wptr++] = val & 0xff;
//s->ti_size = 0;
s->rregs[ESP_RINTR] = INTR_FC;
s->rregs[ESP_RSEQ] = 0;
+ s->rregs[ESP_RFLAGS] = 0;
break;
case CMD_RESET:
DPRINTF("Chip reset (%2.2x)\n", val);
- esp_reset(s);
+ esp_reset(&s->busdev.qdev);
break;
case CMD_BUSRESET:
DPRINTF("Bus reset (%2.2x)\n", val);
case CMD_ICCS:
DPRINTF("Initiator Command Complete Sequence (%2.2x)\n", val);
write_response(s);
+ s->rregs[ESP_RINTR] = INTR_FC;
+ s->rregs[ESP_RSTAT] |= STAT_MI;
break;
case CMD_MSGACC:
DPRINTF("Message Accepted (%2.2x)\n", val);
- write_response(s);
s->rregs[ESP_RINTR] = INTR_DC;
s->rregs[ESP_RSEQ] = 0;
+ s->rregs[ESP_RFLAGS] = 0;
+ esp_raise_irq(s);
+ break;
+ case CMD_PAD:
+ DPRINTF("Transfer padding (%2.2x)\n", val);
+ s->rregs[ESP_RSTAT] = STAT_TC;
+ s->rregs[ESP_RINTR] = INTR_FC;
+ s->rregs[ESP_RSEQ] = 0;
break;
case CMD_SATN:
DPRINTF("Set ATN (%2.2x)\n", val);
break;
+ case CMD_SEL:
+ DPRINTF("Select without ATN (%2.2x)\n", val);
+ handle_s_without_atn(s);
+ break;
case CMD_SELATN:
- DPRINTF("Set ATN (%2.2x)\n", val);
+ DPRINTF("Select with ATN (%2.2x)\n", val);
handle_satn(s);
break;
case CMD_SELATNS:
- DPRINTF("Set ATN & stop (%2.2x)\n", val);
+ DPRINTF("Select with ATN & stop (%2.2x)\n", val);
handle_satn_stop(s);
break;
case CMD_ENSEL:
DPRINTF("Enable selection (%2.2x)\n", val);
+ s->rregs[ESP_RINTR] = 0;
break;
default:
- DPRINTF("Unhandled ESP command (%2.2x)\n", val);
+ ESP_ERROR("Unhandled ESP command (%2.2x)\n", val);
break;
}
break;
break;
case ESP_WCCF ... ESP_WTEST:
break;
- case ESP_CFG2:
- s->rregs[saddr] = val & CFG2_MASK;
- break;
- case ESP_CFG3 ... ESP_RES4:
+ case ESP_CFG2 ... ESP_RES4:
s->rregs[saddr] = val;
break;
default:
- break;
+ ESP_ERROR("invalid write of 0x%02x at [0x%x]\n", val, saddr);
+ return;
}
s->wregs[saddr] = val;
}
-static CPUReadMemoryFunc *esp_mem_read[3] = {
+static CPUReadMemoryFunc * const esp_mem_read[3] = {
esp_mem_readb,
NULL,
NULL,
};
-static CPUWriteMemoryFunc *esp_mem_write[3] = {
+static CPUWriteMemoryFunc * const esp_mem_write[3] = {
esp_mem_writeb,
NULL,
- NULL,
+ esp_mem_writeb,
};
-static void esp_save(QEMUFile *f, void *opaque)
-{
- ESPState *s = opaque;
-
- qemu_put_buffer(f, s->rregs, ESP_REGS);
- qemu_put_buffer(f, s->wregs, ESP_REGS);
- qemu_put_be32s(f, &s->ti_size);
- qemu_put_be32s(f, &s->ti_rptr);
- qemu_put_be32s(f, &s->ti_wptr);
- qemu_put_buffer(f, s->ti_buf, TI_BUFSZ);
- qemu_put_be32s(f, &s->sense);
- qemu_put_be32s(f, &s->dma);
- qemu_put_buffer(f, s->cmdbuf, TI_BUFSZ);
- qemu_put_be32s(f, &s->cmdlen);
- qemu_put_be32s(f, &s->do_cmd);
- qemu_put_be32s(f, &s->dma_left);
- // There should be no transfers in progress, so dma_counter is not saved
-}
-
-static int esp_load(QEMUFile *f, void *opaque, int version_id)
-{
- ESPState *s = opaque;
-
- if (version_id != 3)
- return -EINVAL; // Cannot emulate 2
-
- qemu_get_buffer(f, s->rregs, ESP_REGS);
- qemu_get_buffer(f, s->wregs, ESP_REGS);
- qemu_get_be32s(f, &s->ti_size);
- qemu_get_be32s(f, &s->ti_rptr);
- qemu_get_be32s(f, &s->ti_wptr);
- qemu_get_buffer(f, s->ti_buf, TI_BUFSZ);
- qemu_get_be32s(f, &s->sense);
- qemu_get_be32s(f, &s->dma);
- qemu_get_buffer(f, s->cmdbuf, TI_BUFSZ);
- qemu_get_be32s(f, &s->cmdlen);
- qemu_get_be32s(f, &s->do_cmd);
- qemu_get_be32s(f, &s->dma_left);
-
- return 0;
-}
+static const VMStateDescription vmstate_esp = {
+ .name ="esp",
+ .version_id = 3,
+ .minimum_version_id = 3,
+ .minimum_version_id_old = 3,
+ .fields = (VMStateField []) {
+ VMSTATE_BUFFER(rregs, ESPState),
+ VMSTATE_BUFFER(wregs, ESPState),
+ VMSTATE_INT32(ti_size, ESPState),
+ VMSTATE_UINT32(ti_rptr, ESPState),
+ VMSTATE_UINT32(ti_wptr, ESPState),
+ VMSTATE_BUFFER(ti_buf, ESPState),
+ VMSTATE_UINT32(sense, ESPState),
+ VMSTATE_UINT32(dma, ESPState),
+ VMSTATE_BUFFER(cmdbuf, ESPState),
+ VMSTATE_UINT32(cmdlen, ESPState),
+ VMSTATE_UINT32(do_cmd, ESPState),
+ VMSTATE_UINT32(dma_left, ESPState),
+ VMSTATE_END_OF_LIST()
+ }
+};
-void esp_scsi_attach(void *opaque, BlockDriverState *bd, int id)
+void esp_init(target_phys_addr_t espaddr, int it_shift,
+ ESPDMAMemoryReadWriteFunc dma_memory_read,
+ ESPDMAMemoryReadWriteFunc dma_memory_write,
+ void *dma_opaque, qemu_irq irq, qemu_irq *reset)
{
- ESPState *s = (ESPState *)opaque;
-
- if (id < 0) {
- for (id = 0; id < ESP_MAX_DEVS; id++) {
- if (s->scsi_dev[id] == NULL)
- break;
- }
- }
- if (id >= ESP_MAX_DEVS) {
- DPRINTF("Bad Device ID %d\n", id);
- return;
- }
- if (s->scsi_dev[id]) {
- DPRINTF("Destroying device %d\n", id);
- s->scsi_dev[id]->destroy(s->scsi_dev[id]);
- }
- DPRINTF("Attaching block device %d\n", id);
- /* Command queueing is not implemented. */
- s->scsi_dev[id] = scsi_generic_init(bd, 0, esp_command_complete, s);
- if (s->scsi_dev[id] == NULL)
- s->scsi_dev[id] = scsi_disk_init(bd, 0, esp_command_complete, s);
+ DeviceState *dev;
+ SysBusDevice *s;
+ ESPState *esp;
+
+ dev = qdev_create(NULL, "esp");
+ esp = DO_UPCAST(ESPState, busdev.qdev, dev);
+ esp->dma_memory_read = dma_memory_read;
+ esp->dma_memory_write = dma_memory_write;
+ esp->dma_opaque = dma_opaque;
+ esp->it_shift = it_shift;
+ qdev_init_nofail(dev);
+ s = sysbus_from_qdev(dev);
+ sysbus_connect_irq(s, 0, irq);
+ sysbus_mmio_map(s, 0, espaddr);
+ *reset = qdev_get_gpio_in(dev, 0);
}
-void *esp_init(target_phys_addr_t espaddr, int it_shift,
- espdma_memory_read_write dma_memory_read,
- espdma_memory_read_write dma_memory_write,
- void *dma_opaque, qemu_irq irq, qemu_irq *reset)
+static int esp_init1(SysBusDevice *dev)
{
- ESPState *s;
+ ESPState *s = FROM_SYSBUS(ESPState, dev);
int esp_io_memory;
- s = qemu_mallocz(sizeof(ESPState));
- if (!s)
- return NULL;
-
- s->irq = irq;
- s->it_shift = it_shift;
- s->dma_memory_read = dma_memory_read;
- s->dma_memory_write = dma_memory_write;
- s->dma_opaque = dma_opaque;
+ sysbus_init_irq(dev, &s->irq);
+ assert(s->it_shift != -1);
- esp_io_memory = cpu_register_io_memory(0, esp_mem_read, esp_mem_write, s);
- cpu_register_physical_memory(espaddr, ESP_REGS << it_shift, esp_io_memory);
+ esp_io_memory = cpu_register_io_memory(esp_mem_read, esp_mem_write, s);
+ sysbus_init_mmio(dev, ESP_REGS << s->it_shift, esp_io_memory);
- esp_reset(s);
+ qdev_init_gpio_in(&dev->qdev, parent_esp_reset, 1);
- register_savevm("esp", espaddr, 3, esp_save, esp_load, s);
- qemu_register_reset(esp_reset, s);
+ scsi_bus_new(&s->bus, &dev->qdev, 0, ESP_MAX_DEVS, esp_command_complete);
+ scsi_bus_legacy_handle_cmdline(&s->bus);
+ return 0;
+}
- *reset = *qemu_allocate_irqs(parent_esp_reset, s, 1);
+static SysBusDeviceInfo esp_info = {
+ .init = esp_init1,
+ .qdev.name = "esp",
+ .qdev.size = sizeof(ESPState),
+ .qdev.vmsd = &vmstate_esp,
+ .qdev.reset = esp_reset,
+ .qdev.props = (Property[]) {
+ {.name = NULL}
+ }
+};
- return s;
+static void esp_register_devices(void)
+{
+ sysbus_register_withprop(&esp_info);
}
+
+device_init(esp_register_devices)
projects / qemu.git / blobdiff