diff --git a/hw/esp.c b/hw/esp.c
index ca41f80..697c2c5 100644
--- a/hw/esp.c
+++ b/hw/esp.c
@@ -25,9 +25,7 @@
 #include "sysbus.h"
 #include "scsi.h"
 #include "esp.h"
-
-/* debug ESP card */
-//#define DEBUG_ESP
+#include "trace.h"

 /*
  * On Sparc32, this is the ESP (NCR53C90) part of chip STP2000 (Master I/O),
@@ -37,13 +35,6 @@
  * http://www.ibiblio.org/pub/historic-linux/early-ports/Sparc/NCR/NCR53C9X.txt
  */

-#ifdef DEBUG_ESP
-#define DPRINTF(fmt, ...)                                       \
-    do { printf("ESP: " fmt , ## __VA_ARGS__); } while (0)
-#else
-#define DPRINTF(fmt, ...) do {} while (0)
-#endif
-
 #define ESP_ERROR(fmt, ...)                                             \
     do { printf("ESP ERROR: %s: " fmt, __func__ , ## __VA_ARGS__); } while (0)

@@ -158,7 +149,7 @@ 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");
+        trace_esp_raise_irq();
     }
 }

@@ -167,7 +158,7 @@ static void esp_lower_irq(ESPState *s)
     if (s->rregs[ESP_RSTAT] & STAT_INT) {
         s->rregs[ESP_RSTAT] &= ~STAT_INT;
         qemu_irq_lower(s->irq);
-        DPRINTF("Lower IRQ\n");
+        trace_esp_lower_irq();
     }
 }

@@ -178,13 +169,13 @@ static void esp_dma_enable(void *opaque, int
irq, int level)

     if (level) {
         s->dma_enabled = 1;
-        DPRINTF("Raise enable\n");
+        trace_esp_dma_enable();
         if (s->dma_cb) {
             s->dma_cb(s);
             s->dma_cb = NULL;
         }
     } else {
-        DPRINTF("Lower enable\n");
+        trace_esp_dma_disable();
         s->dma_enabled = 0;
     }
 }
@@ -214,7 +205,7 @@ static uint32_t get_cmd(ESPState *s, uint8_t *buf)
         memcpy(buf, s->ti_buf, dmalen);
         buf[0] = buf[2] >> 5;
     }
-    DPRINTF("get_cmd: len %d target %d\n", dmalen, target);
+    trace_esp_get_cmd(dmalen, target);

     s->ti_size = 0;
     s->ti_rptr = 0;
@@ -243,7 +234,7 @@ static void do_busid_cmd(ESPState *s, uint8_t
*buf, uint8_t busid)
     int32_t datalen;
     int lun;

-    DPRINTF("do_busid_cmd: busid 0x%x\n", busid);
+    trace_esp_do_busid_cmd(busid);
     lun = busid & 7;
     s->current_req = scsi_req_new(s->current_dev, 0, lun, buf, NULL);
     datalen = scsi_req_enqueue(s->current_req);
@@ -308,7 +299,7 @@ static void handle_satn_stop(ESPState *s)
     }
     s->cmdlen = get_cmd(s, s->cmdbuf);
     if (s->cmdlen) {
-        DPRINTF("Set ATN & Stop: cmdlen %d\n", s->cmdlen);
+        trace_esp_handle_satn_stop(s->cmdlen);
         s->do_cmd = 1;
         s->rregs[ESP_RSTAT] = STAT_TC | STAT_CD;
         s->rregs[ESP_RINTR] = INTR_BS | INTR_FC;
@@ -319,7 +310,7 @@ static void handle_satn_stop(ESPState *s)

 static void write_response(ESPState *s)
 {
-    DPRINTF("Transfer status (status=%d)\n", s->status);
+    trace_esp_write_response(s->status);
     s->ti_buf[0] = s->status;
     s->ti_buf[1] = 0;
     if (s->dma) {
@@ -355,7 +346,7 @@ static void esp_do_dma(ESPState *s)
     to_device = (s->ti_size < 0);
     len = s->dma_left;
     if (s->do_cmd) {
-        DPRINTF("command len %d + %d\n", s->cmdlen, len);
+        trace_esp_do_dma(s->cmdlen, len);
         s->dma_memory_read(s->dma_opaque, &s->cmdbuf[s->cmdlen], len);
         s->ti_size = 0;
         s->cmdlen = 0;
@@ -400,15 +391,15 @@ static void esp_command_complete(SCSIRequest
*req, uint32_t status)
 {
     ESPState *s = DO_UPCAST(ESPState, busdev.qdev, req->bus->qbus.parent);

-    DPRINTF("SCSI Command complete\n");
+    trace_esp_command_complete();
     if (s->ti_size != 0) {
-        DPRINTF("SCSI command completed unexpectedly\n");
+        trace_esp_command_complete_unexpected();
     }
     s->ti_size = 0;
     s->dma_left = 0;
     s->async_len = 0;
     if (status) {
-        DPRINTF("Command failed\n");
+        trace_esp_command_complete_fail();
     }
     s->status = status;
     s->rregs[ESP_RSTAT] = STAT_ST;
@@ -424,7 +415,7 @@ static void esp_transfer_data(SCSIRequest *req,
uint32_t len)
 {
     ESPState *s = DO_UPCAST(ESPState, busdev.qdev, req->bus->qbus.parent);

-    DPRINTF("transfer %d/%d\n", s->dma_left, s->ti_size);
+    trace_esp_transfer_data(s->dma_left, s->ti_size);
     s->async_len = len;
     s->async_buf = scsi_req_get_buf(req);
     if (s->dma_left) {
@@ -452,13 +443,13 @@ static void handle_ti(ESPState *s)
         minlen = (dmalen < -s->ti_size) ? dmalen : -s->ti_size;
     else
         minlen = (dmalen < s->ti_size) ? dmalen : s->ti_size;
-    DPRINTF("Transfer Information len %d\n", minlen);
+    trace_esp_handle_ti(minlen);
     if (s->dma) {
         s->dma_left = minlen;
         s->rregs[ESP_RSTAT] &= ~STAT_TC;
         esp_do_dma(s);
     } else if (s->do_cmd) {
-        DPRINTF("command len %d\n", s->cmdlen);
+        trace_esp_handle_ti_cmd(s->cmdlen);
         s->ti_size = 0;
         s->cmdlen = 0;
         s->do_cmd = 0;
@@ -517,7 +508,7 @@ static uint32_t esp_mem_readb(void *opaque,
target_phys_addr_t addr)
     uint32_t saddr, old_val;

     saddr = addr >> s->it_shift;
-    DPRINTF("read reg[%d]: 0x%2.2x\n", saddr, s->rregs[saddr]);
+    trace_esp_mem_readb(saddr, s->rregs[saddr]);
     switch (saddr) {
     case ESP_FIFO:
         if (s->ti_size > 0) {
@@ -558,8 +549,7 @@ static void esp_mem_writeb(void *opaque,
target_phys_addr_t addr, uint32_t val)
     uint32_t saddr;

     saddr = addr >> s->it_shift;
-    DPRINTF("write reg[%d]: 0x%2.2x -> 0x%2.2x\n", saddr, s->wregs[saddr],
-            val);
+    trace_esp_mem_writeb(saddr, s->wregs[saddr], val);
     switch (saddr) {
     case ESP_TCLO:
     case ESP_TCMID:
@@ -587,21 +577,21 @@ static void esp_mem_writeb(void *opaque,
target_phys_addr_t addr, uint32_t val)
         }
         switch(val & CMD_CMD) {
         case CMD_NOP:
-            DPRINTF("NOP (%2.2x)\n", val);
+            trace_esp_mem_writeb_cmd_nop(val);
             break;
         case CMD_FLUSH:
-            DPRINTF("Flush FIFO (%2.2x)\n", val);
+            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:
-            DPRINTF("Chip reset (%2.2x)\n", val);
+            trace_esp_mem_writeb_cmd_reset(val);
             esp_soft_reset(&s->busdev.qdev);
             break;
         case CMD_BUSRESET:
-            DPRINTF("Bus reset (%2.2x)\n", val);
+            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);
@@ -611,41 +601,41 @@ static void esp_mem_writeb(void *opaque,
target_phys_addr_t addr, uint32_t val)
             handle_ti(s);
             break;
         case CMD_ICCS:
-            DPRINTF("Initiator Command Complete Sequence (%2.2x)\n", val);
+            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:
-            DPRINTF("Message Accepted (%2.2x)\n", val);
+            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:
-            DPRINTF("Transfer padding (%2.2x)\n", val);
+            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:
-            DPRINTF("Set ATN (%2.2x)\n", val);
+            trace_esp_mem_writeb_cmd_satn(val);
             break;
         case CMD_SEL:
-            DPRINTF("Select without ATN (%2.2x)\n", val);
+            trace_esp_mem_writeb_cmd_sel(val);
             handle_s_without_atn(s);
             break;
         case CMD_SELATN:
-            DPRINTF("Select with ATN (%2.2x)\n", val);
+            trace_esp_mem_writeb_cmd_selatn(val);
             handle_satn(s);
             break;
         case CMD_SELATNS:
-            DPRINTF("Select with ATN & stop (%2.2x)\n", val);
+            trace_esp_mem_writeb_cmd_selatns(val);
             handle_satn_stop(s);
             break;
         case CMD_ENSEL:
-            DPRINTF("Enable selection (%2.2x)\n", val);
+            trace_esp_mem_writeb_cmd_ensel(val);
             s->rregs[ESP_RINTR] = 0;
             break;
         default:
diff --git a/trace-events b/trace-events
index e89a30c..cc700a8 100644
--- a/trace-events
+++ b/trace-events
@@ -526,3 +526,34 @@ win_helper_no_switch_pstate(uint32_t
new_pstate_regs) "change_pstate: regs new=%
 win_helper_wrpil(uint32_t psrpil, uint32_t new_pil) "old=%x new=%x"
 win_helper_done(uint32_t tl) "tl=%d"
 win_helper_retry(uint32_t tl) "tl=%d"
+
+# hw/esp.c
+esp_raise_irq(void) "Raise IRQ"
+esp_lower_irq(void) "Lower IRQ"
+esp_dma_enable(void) "Raise enable"
+esp_dma_disable(void) "Lower enable"
+esp_get_cmd(uint32_t dmalen, int target) "len %d target %d"
+esp_do_busid_cmd(uint8_t busid) "busid 0x%x"
+esp_handle_satn_stop(uint32_t cmdlen) "cmdlen %d"
+esp_write_response(uint32_t status) "Transfer status (status=%d)"
+esp_do_dma(uint32_t cmdlen, uint32_t len) "command len %d + %d"
+esp_command_complete(void) "SCSI Command complete"
+esp_command_complete_unexpected(void) "SCSI command completed unexpectedly"
+esp_command_complete_fail(void) "Command failed"
+esp_transfer_data(uint32_t dma_left, int32_t ti_size) "transfer %d/%d"
+esp_handle_ti(uint32_t minlen) "Transfer Information len %d"
+esp_handle_ti_cmd(uint32_t cmdlen) "command len %d"
+esp_mem_readb(uint32_t saddr, uint8_t reg) "reg[%d]: 0x%2.2x"
+esp_mem_writeb(uint32_t saddr, uint8_t reg, uint32_t val) "reg[%d]:
0x%2.2x -> 0x%2.2x"
+esp_mem_writeb_cmd_nop(uint32_t val) "NOP (%2.2x)"
+esp_mem_writeb_cmd_flush(uint32_t val) "Flush FIFO (%2.2x)"
+esp_mem_writeb_cmd_reset(uint32_t val) "Chip reset (%2.2x)"
+esp_mem_writeb_cmd_bus_reset(uint32_t val) "Bus reset (%2.2x)"
+esp_mem_writeb_cmd_iccs(uint32_t val) "Initiator Command Complete
Sequence (%2.2x)"
+esp_mem_writeb_cmd_msgacc(uint32_t val) "Message Accepted (%2.2x)"
+esp_mem_writeb_cmd_pad(uint32_t val) "Transfer padding (%2.2x)"
+esp_mem_writeb_cmd_satn(uint32_t val) "Set ATN (%2.2x)"
+esp_mem_writeb_cmd_sel(uint32_t val) "Select without ATN (%2.2x)"
