esp_scsi: debug event and command

Add new debug definitions for event and command logging.

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>

1 files changed, 15 insertions, 0 deletions

diff --git a/drivers/scsi/esp_scsi.c b/drivers/scsi/esp_scsi.c
index d85f2392c6ae..800ff3ea501d 100644
--- a/drivers/scsi/esp_scsi.c
+++ b/drivers/scsi/esp_scsi.c
@@ -49,6 +49,8 @@ static u32 esp_debug;
 #define ESP_DEBUG_DATADONE      0x00000100
 #define ESP_DEBUG_RECONNECT     0x00000200
 #define ESP_DEBUG_AUTOSENSE     0x00000400
+#define ESP_DEBUG_EVENT         0x00000800
+#define ESP_DEBUG_COMMAND       0x00001000
 
 #define esp_log_intr(f, a...) \
 do {    if (esp_debug & ESP_DEBUG_INTR) \
@@ -100,6 +102,16 @@ do {	if (esp_debug & ESP_DEBUG_AUTOSENSE) \
                 shost_printk(KERN_DEBUG, esp->host, f, ## a);   \
 } while (0)
 
+#define esp_log_event(f, a...) \
+do {   if (esp_debug & ESP_DEBUG_EVENT) \
+                shost_printk(KERN_DEBUG, esp->host, f, ## a);   \
+} while (0)
+
+#define esp_log_command(f, a...) \
+do {   if (esp_debug & ESP_DEBUG_COMMAND)       \
+                shost_printk(KERN_DEBUG, esp->host, f, ## a);   \
+} while (0)
+
 #define esp_read8(REG)          esp->ops->esp_read8(esp, REG)
 #define esp_write8(VAL,REG)     esp->ops->esp_write8(esp, VAL, REG)
 
@@ -126,6 +138,7 @@ void scsi_esp_cmd(struct esp *esp, u8 val)
 
         esp->esp_event_cur = (idx + 1) & (ESP_EVENT_LOG_SZ - 1);
 
+        esp_log_command("cmd[%02x]\n", val);
         esp_write8(val, ESP_CMD);
 }
 EXPORT_SYMBOL(scsi_esp_cmd);
@@ -1638,6 +1651,8 @@ static int esp_process_event(struct esp *esp)
 
 again:
         write = 0;
+        esp_log_event("process event %d phase %x\n",
+                      esp->event, esp->sreg & ESP_STAT_PMASK);
         switch (esp->event) {
         case ESP_EVENT_CHECK_PHASE:
                 switch (esp->sreg & ESP_STAT_PMASK) {