Merge: Changes, which should enable to handle more VME Unican cards under RT-Linux.

[lincan.git] / lincan / include / constants.h

diff --git a/lincan/include/constants.h b/lincan/include/constants.h
index ce3d742fa625c9f03171f9e7736aa6e2ebceaec8..dc2bb40b15d8f838ab0ab814c19fd2c03e3d07bf 100644 (file)
--- a/lincan/include/constants.h
+++ b/lincan/include/constants.h
@@ -73,15 +73,21 @@
 
 
 /* These flags can be used for the canchip_t structure flags data entry */
-#define CHIP_CONFIGURED  (1<<0)
-#define CHIP_SEGMENTED   (1<<1)
-#define CHIP_IRQ_SETUP   (1<<2)
-#define CHIP_IRQ_PCI     (1<<3)
-#define CHIP_IRQ_VME     (1<<4)
+#define CHIP_CONFIGURED  (1<<0)  /* chip is configured and prepared for communication */
+#define CHIP_SEGMENTED   (1<<1)  /* segmented access, ex: i82527 with 16 byte window*/
+#define CHIP_IRQ_SETUP   (1<<2)  /* IRQ handler has been set */
+#define CHIP_IRQ_PCI     (1<<3)  /* chip is on PCI board and uses PCI interrupt  */
+#define CHIP_IRQ_VME     (1<<4)  /* interrupt is VME bus and requires VME bridge */
+#define CHIP_IRQ_CUSTOM  (1<<5)  /* custom interrupt provided by board or chip code */
+#define CHIP_IRQ_FAST    (1<<6)  /* interrupt handler only schedules postponed processing */
+
+#define CHIP_MAX_IRQLOOP 1000
 
 /* System independent defines of IRQ handled state */
-#define CANCHIP_IRQ_NONE    0
-#define CANCHIP_IRQ_HANDLED 1
+#define CANCHIP_IRQ_NONE     0
+#define CANCHIP_IRQ_HANDLED  1
+#define CANCHIP_IRQ_ACCEPTED 2
+#define CANCHIP_IRQ_STUCK    3
 
 /* These flags can be used for the candevices_t structure flags data entry */
 #define CANDEV_PROGRAMMABLE_IRQ (1<<0)