void esp_reg_write(ESPState *s, uint32_t saddr, uint64_t val)
{
trace_esp_mem_writeb(saddr, s->wregs[saddr], val);
switch (saddr) {
case ESP_TCLO:
case ESP_TCMID:
case ESP_TCHI:
s->rregs[ESP_RSTAT] &= ~STAT_TC;
break;
case ESP_FIFO:
if (s->do_cmd) {
s->cmdbuf[s->cmdlen++] = val & 0xff;
} else if (s->ti_size == TI_BUFSZ - 1) {
trace_esp_error_fifo_overrun();
} else {
s->ti_size++;
s->ti_buf[s->ti_wptr++] = val & 0xff;
}
break;
case ESP_CMD:
s->rregs[saddr] = val;
if (val & CMD_DMA) {
s->dma = 1;
/* Reload DMA counter. */
s->rregs[ESP_TCLO] = s->wregs[ESP_TCLO];
s->rregs[ESP_TCMID] = s->wregs[ESP_TCMID];
s->rregs[ESP_TCHI] = s->wregs[ESP_TCHI];
} else {
s->dma = 0;
}
switch(val & CMD_CMD) {
case CMD_NOP:
trace_esp_mem_writeb_cmd_nop(val);
break;
case CMD_FLUSH:
trace_esp_mem_writeb_cmd_flush(val);
//s->ti_size = 0;
s->rregs[ESP_RINTR] = INTR_FC;
s->rregs[ESP_RSEQ] = 0;
s->rregs[ESP_RFLAGS] = 0;
break;
case CMD_RESET:
trace_esp_mem_writeb_cmd_reset(val);
esp_soft_reset(s);
break;
case CMD_BUSRESET:
trace_esp_mem_writeb_cmd_bus_reset(val);
s->rregs[ESP_RINTR] = INTR_RST;
if (!(s->wregs[ESP_CFG1] & CFG1_RESREPT)) {
esp_raise_irq(s);
}
break;
case CMD_TI:
handle_ti(s);
break;
case CMD_ICCS:
trace_esp_mem_writeb_cmd_iccs(val);
write_response(s);
s->rregs[ESP_RINTR] = INTR_FC;
s->rregs[ESP_RSTAT] |= STAT_MI;
break;
case CMD_MSGACC:
trace_esp_mem_writeb_cmd_msgacc(val);
s->rregs[ESP_RINTR] = INTR_DC;
s->rregs[ESP_RSEQ] = 0;
s->rregs[ESP_RFLAGS] = 0;
esp_raise_irq(s);
break;
case CMD_PAD:
trace_esp_mem_writeb_cmd_pad(val);
s->rregs[ESP_RSTAT] = STAT_TC;
s->rregs[ESP_RINTR] = INTR_FC;
s->rregs[ESP_RSEQ] = 0;
break;
case CMD_SATN:
trace_esp_mem_writeb_cmd_satn(val);
break;
case CMD_RSTATN:
trace_esp_mem_writeb_cmd_rstatn(val);
break;
case CMD_SEL:
trace_esp_mem_writeb_cmd_sel(val);
handle_s_without_atn(s);
break;
case CMD_SELATN:
trace_esp_mem_writeb_cmd_selatn(val);
handle_satn(s);
break;
case CMD_SELATNS:
trace_esp_mem_writeb_cmd_selatns(val);
handle_satn_stop(s);
break;
case CMD_ENSEL:
trace_esp_mem_writeb_cmd_ensel(val);
s->rregs[ESP_RINTR] = 0;
break;
case CMD_DISSEL:
trace_esp_mem_writeb_cmd_dissel(val);
s->rregs[ESP_RINTR] = 0;
esp_raise_irq(s);
break;
default:
trace_esp_error_unhandled_command(val);
break;
}
break;
case ESP_WBUSID ... ESP_WSYNO:
break;
case ESP_CFG1:
case ESP_CFG2:
case ESP_CFG3:
case ESP_RES3:
case ESP_RES4:
s->rregs[saddr] = val;
break;
case ESP_WCCF ... ESP_WTEST:
break;
default:
trace_esp_error_invalid_write(val, saddr);
return;
}
s->wregs[saddr] = val;
}
void esp_reg_write(void *opaque, uint32_t saddr, uint64_t val)
{
ESPState *s = (ESPState*)opaque;
switch (saddr) {
case ESP_TCLO:
case ESP_TCMID:
case ESP_TCHI:
s->rregs[ESP_RSTAT] &= ~STAT_TC;
break;
case ESP_FIFO:
if (s->do_cmd) {
s->cmdbuf[s->cmdlen++] = val & 0xff;
} else if (s->ti_size == TI_BUFSZ - 1) {
;
} else {
s->ti_size++;
s->ti_buf[s->ti_wptr++] = val & 0xff;
}
break;
case ESP_CMD:
s->rregs[saddr] = val;
if (val & CMD_DMA) {
s->dma = 1;
/* Reload DMA counter. */
s->rregs[ESP_TCLO] = s->wregs[ESP_TCLO];
s->rregs[ESP_TCMID] = s->wregs[ESP_TCMID];
s->rregs[ESP_TCHI] = s->wregs[ESP_TCHI];
} else {
s->dma = 0;
}
switch(val & CMD_CMD) {
case CMD_NOP:
break;
case CMD_FLUSH:
//s->ti_size = 0;
s->rregs[ESP_RINTR] = INTR_FC;
s->rregs[ESP_RSEQ] = 0;
s->rregs[ESP_RFLAGS] = 0;
break;
case CMD_RESET:
esp_soft_reset(s);
// E-Matrix 530 detects existence of SCSI chip by
// writing CMD_RESET and then immediately checking
// if it reads back.
s->rregs[saddr] = CMD_RESET;
break;
case CMD_BUSRESET:
s->rregs[ESP_RINTR] = INTR_RST;
if (!(s->wregs[ESP_CFG1] & CFG1_RESREPT)) {
esp_raise_irq(s);
}
break;
case CMD_TI:
handle_ti(s);
break;
case CMD_ICCS:
write_response(s);
s->rregs[ESP_RINTR] = INTR_FC;
s->rregs[ESP_RSTAT] |= STAT_MI;
break;
case CMD_MSGACC:
s->rregs[ESP_RINTR] = INTR_DC;
s->rregs[ESP_RSEQ] = 0;
s->rregs[ESP_RFLAGS] = 0;
// Masoboshi driver expects phase=0!
s->rregs[ESP_RSTAT] &= ~7;
esp_raise_irq(s);
break;
case CMD_PAD:
s->rregs[ESP_RSTAT] = STAT_TC;
s->rregs[ESP_RINTR] = INTR_FC;
s->rregs[ESP_RSEQ] = 0;
break;
case CMD_SATN:
break;
case CMD_RSTATN:
break;
case CMD_SEL:
handle_s_without_atn(s);
break;
case CMD_SELATN:
handle_satn(s);
break;
case CMD_SELATNS:
handle_satn_stop(s);
break;
case CMD_ENSEL:
s->rregs[ESP_RINTR] = 0;
break;
case CMD_DISSEL:
// Masoboshi driver expects Function Complete.
s->rregs[ESP_RINTR] = INTR_FC;
esp_raise_irq(s);
break;
default:
break;
}
break;
case ESP_WBUSID:
case ESP_WSEL:
case ESP_WSYNTP:
case ESP_WSYNO:
break;
case ESP_CFG1:
case ESP_CFG2: case ESP_CFG3:
case ESP_RES3: case ESP_RES4:
s->rregs[saddr] = val;
break;
case ESP_WCCF:
case ESP_WTEST:
break;
default:
write_log("write unknown 53c94 register %02x\n", saddr);
//activate_debugger();
return;
}
s->wregs[saddr] = val;
}
static void esp_mem_writeb(void *opaque, target_phys_addr_t addr, uint32_t val)
{
ESPState *s = opaque;
uint32_t saddr;
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_TCLO:
case ESP_TCMID:
s->rregs[ESP_RSTAT] &= ~STAT_TC;
break;
case ESP_FIFO:
if (s->do_cmd) {
s->cmdbuf[s->cmdlen++] = val & 0xff;
} 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;
}
break;
case ESP_CMD:
s->rregs[saddr] = val;
if (val & CMD_DMA) {
s->dma = 1;
/* Reload DMA counter. */
s->rregs[ESP_TCLO] = s->wregs[ESP_TCLO];
s->rregs[ESP_TCMID] = s->wregs[ESP_TCMID];
} else {
s->dma = 0;
}
switch(val & CMD_CMD) {
case CMD_NOP:
DPRINTF("NOP (%2.2x)\n", val);
break;
case CMD_FLUSH:
DPRINTF("Flush FIFO (%2.2x)\n", val);
//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_soft_reset(&s->busdev.qdev);
break;
case CMD_BUSRESET:
DPRINTF("Bus reset (%2.2x)\n", val);
s->rregs[ESP_RINTR] = INTR_RST;
if (!(s->wregs[ESP_CFG1] & CFG1_RESREPT)) {
esp_raise_irq(s);
}
break;
case CMD_TI:
handle_ti(s);
break;
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);
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("Select with ATN (%2.2x)\n", val);
handle_satn(s);
break;
case CMD_SELATNS:
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:
ESP_ERROR("Unhandled ESP command (%2.2x)\n", val);
break;
}
break;
case ESP_WBUSID ... ESP_WSYNO:
break;
case ESP_CFG1:
s->rregs[saddr] = val;
break;
case ESP_WCCF ... ESP_WTEST:
break;
case ESP_CFG2 ... ESP_RES4:
s->rregs[saddr] = val;
break;
default:
ESP_ERROR("invalid write of 0x%02x at [0x%x]\n", val, saddr);
return;
}
s->wregs[saddr] = val;
}
static void esp_mem_write(void *opaque, target_phys_addr_t addr,
uint64_t val, unsigned size)
{
ESPState *s = opaque;
uint32_t saddr;
saddr = addr >> s->it_shift;
trace_esp_mem_writeb(saddr, s->wregs[saddr], val);
switch (saddr) {
case ESP_TCLO:
case ESP_TCMID:
s->rregs[ESP_RSTAT] &= ~STAT_TC;
break;
case ESP_FIFO:
if (s->do_cmd) {
s->cmdbuf[s->cmdlen++] = val & 0xff;
} 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;
}
break;
case ESP_CMD:
s->rregs[saddr] = val;
if (val & CMD_DMA) {
s->dma = 1;
/* Reload DMA counter. */
s->rregs[ESP_TCLO] = s->wregs[ESP_TCLO];
s->rregs[ESP_TCMID] = s->wregs[ESP_TCMID];
} else {
s->dma = 0;
}
switch(val & CMD_CMD) {
case CMD_NOP:
trace_esp_mem_writeb_cmd_nop(val);
break;
case CMD_FLUSH:
trace_esp_mem_writeb_cmd_flush(val);
//s->ti_size = 0;
s->rregs[ESP_RINTR] = INTR_FC;
s->rregs[ESP_RSEQ] = 0;
s->rregs[ESP_RFLAGS] = 0;
break;
case CMD_RESET:
trace_esp_mem_writeb_cmd_reset(val);
esp_soft_reset(&s->busdev.qdev);
break;
case CMD_BUSRESET:
trace_esp_mem_writeb_cmd_bus_reset(val);
s->rregs[ESP_RINTR] = INTR_RST;
if (!(s->wregs[ESP_CFG1] & CFG1_RESREPT)) {
esp_raise_irq(s);
}
break;
case CMD_TI:
handle_ti(s);
break;
case CMD_ICCS:
trace_esp_mem_writeb_cmd_iccs(val);
write_response(s);
s->rregs[ESP_RINTR] = INTR_FC;
s->rregs[ESP_RSTAT] |= STAT_MI;
break;
case CMD_MSGACC:
trace_esp_mem_writeb_cmd_msgacc(val);
s->rregs[ESP_RINTR] = INTR_DC;
s->rregs[ESP_RSEQ] = 0;
s->rregs[ESP_RFLAGS] = 0;
esp_raise_irq(s);
break;
case CMD_PAD:
trace_esp_mem_writeb_cmd_pad(val);
s->rregs[ESP_RSTAT] = STAT_TC;
s->rregs[ESP_RINTR] = INTR_FC;
s->rregs[ESP_RSEQ] = 0;
break;
case CMD_SATN:
trace_esp_mem_writeb_cmd_satn(val);
break;
case CMD_SEL:
trace_esp_mem_writeb_cmd_sel(val);
handle_s_without_atn(s);
break;
case CMD_SELATN:
trace_esp_mem_writeb_cmd_selatn(val);
handle_satn(s);
break;
case CMD_SELATNS:
trace_esp_mem_writeb_cmd_selatns(val);
handle_satn_stop(s);
break;
case CMD_ENSEL:
trace_esp_mem_writeb_cmd_ensel(val);
s->rregs[ESP_RINTR] = 0;
break;
default:
ESP_ERROR("Unhandled ESP command (%2.2x)\n", (unsigned)val);
break;
}
break;
case ESP_WBUSID ... ESP_WSYNO:
break;
case ESP_CFG1:
s->rregs[saddr] = val;
break;
case ESP_WCCF ... ESP_WTEST:
break;
case ESP_CFG2 ... ESP_RES4:
s->rregs[saddr] = val;
break;
default:
ESP_ERROR("invalid write of 0x%02x at [0x%x]\n", (unsigned)val, saddr);
return;
}
s->wregs[saddr] = val;
}