From: Borislav Petkov <petkov@uni-muenster.de>

libata new debugging macro definitions

Signed-off-by: Borislav Petkov <petkov@uni-muenster.de>
Signed-off-by: Randy Dunlap <randy_d_dunlap@linux.intel.com>

1 files changed, 45 insertions, 7 deletions

diff --git a/include/linux/libata.h b/include/linux/libata.h
index a43c95f8f968..339f7e75cb60 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -35,7 +35,8 @@
 #include <linux/workqueue.h>
 
 /*
- * compile-time options
+ * compile-time options: to be removed as soon as all the drivers are
+ * converted to the new debugging mechanism
  */
 #undef ATA_DEBUG                /* debugging output */
 #undef ATA_VERBOSE_DEBUG        /* yet more debugging output */
@@ -71,6 +72,38 @@
         }
 #endif
 
+/* NEW: debug levels */
+#define HAVE_LIBATA_MSG 1
+
+enum {
+        ATA_MSG_DRV     = 0x0001,
+        ATA_MSG_INFO    = 0x0002,
+        ATA_MSG_PROBE   = 0x0004,
+        ATA_MSG_WARN    = 0x0008,
+        ATA_MSG_MALLOC  = 0x0010,
+        ATA_MSG_CTL     = 0x0020,
+        ATA_MSG_INTR    = 0x0040,
+        ATA_MSG_ERR     = 0x0080,
+};
+
+#define ata_msg_drv(p)    ((p)->msg_enable & ATA_MSG_DRV)
+#define ata_msg_info(p)   ((p)->msg_enable & ATA_MSG_INFO)
+#define ata_msg_probe(p)  ((p)->msg_enable & ATA_MSG_PROBE)
+#define ata_msg_warn(p)   ((p)->msg_enable & ATA_MSG_WARN)
+#define ata_msg_malloc(p) ((p)->msg_enable & ATA_MSG_MALLOC)
+#define ata_msg_ctl(p)    ((p)->msg_enable & ATA_MSG_CTL)
+#define ata_msg_intr(p)   ((p)->msg_enable & ATA_MSG_INTR)
+#define ata_msg_err(p)    ((p)->msg_enable & ATA_MSG_ERR)
+
+static inline u32 ata_msg_init(int dval, int default_msg_enable_bits)
+{
+        if (dval < 0 || dval >= (sizeof(u32) * 8))
+                return default_msg_enable_bits; /* should be 0x1 - only driver info msgs */
+        if (!dval)
+                return 0;
+        return (1 << dval) - 1;
+}
+
 /* defines only for the constants which don't work well as enums */
 #define ATA_TAG_POISON          0xfafbfcfdU
 
@@ -356,6 +389,8 @@ struct ata_port {
         unsigned int            hsm_task_state;
         unsigned long           pio_task_timeout;
 
+        u32                     msg_enable;
+
         void                    *private_data;
 };
 
@@ -640,9 +675,9 @@ static inline u8 ata_wait_idle(struct ata_port *ap)
 
         if (status & (ATA_BUSY | ATA_DRQ)) {
                 unsigned long l = ap->ioaddr.status_addr;
-                printk(KERN_WARNING
-                       "ATA: abnormal status 0x%X on port 0x%lX\n",
-                       status, l);
+                if (ata_msg_warn(ap))
+                        printk(KERN_WARNING "ATA: abnormal status 0x%X on port 0x%lX\n",
+                                status, l);
         }
 
         return status;
@@ -734,7 +769,8 @@ static inline u8 ata_irq_ack(struct ata_port *ap, unsigned int chk_drq)
 
         status = ata_busy_wait(ap, bits, 1000);
         if (status & bits)
-                DPRINTK("abnormal status 0x%X\n", status);
+                if (ata_msg_err(ap))
+                        printk(KERN_ERR "abnormal status 0x%X\n", status);
 
         /* get controller status; clear intr, err bits */
         if (ap->flags & ATA_FLAG_MMIO) {
@@ -752,8 +788,10 @@ static inline u8 ata_irq_ack(struct ata_port *ap, unsigned int chk_drq)
                 post_stat = inb(ap->ioaddr.bmdma_addr + ATA_DMA_STATUS);
         }
 
-        VPRINTK("irq ack: host_stat 0x%X, new host_stat 0x%X, drv_stat 0x%X\n",
-                host_stat, post_stat, status);
+        if (ata_msg_intr(ap))
+                printk(KERN_INFO "%s: irq ack: host_stat 0x%X, new host_stat 0x%X, drv_stat 0x%X\n",
+                        __FUNCTION__,
+                        host_stat, post_stat, status);
 
         return status;
 }