1 files changed, 64 insertions, 0 deletions
diff --git a/c/src/lib/libbsp/sparc/shared/can/occan_pci.c b/c/src/lib/libbsp/sparc/shared/can/occan_pci.c
new file mode 100644
index 0000000000..f68d04e9ca
--- /dev/null
+++ b/c/src/lib/libbsp/sparc/shared/can/occan_pci.c
@@ -0,0 +1,64 @@
+
+/* PCI cannot do byte accesses to addresses aligned byte wise
+ * Use alternative reg map.
+ */
+#define OCCAN_WORD_REGS
+
+/* Set registered device name */
+#define OCCAN_DEVNAME "/dev/occanpci0"
+#define OCCAN_DEVNAME_NO(devstr,no) ((devstr)[13]='0'+(no))
+ 
+/* Any non-static function will begin with */
+#define OCCAN_PREFIX(name) occanpci##name
+
+/* do nothing, assume that the interrupt handler is called 
+ * setup externally calling b1553_interrupt_handler.
+ */
+#define OCCAN_REG_INT(handler,irq,arg) \
+ if ( occan_pci_int_reg ) \
+   occan_pci_int_reg(handler,irq,arg);
+
+void (*occan_pci_int_reg)(void *handler, int irq, void *arg) = 0;
+
+void occanpci_interrupt_handler(int irq, void *arg);
+
+/* AMBA Bus is clocked using the PCI clock (33.3MHz) */
+#define SYS_FREQ_HZ 33333333
+
+/* Enable two redundant channels */
+#define REDUNDANT_CHANNELS 2
+
+#define OCCAN_SET_CHANNEL(priv,channel) occanpci_set_channel(priv,channel)
+
+#include "occan.c"
+
+/* Define method that sets redundant channel 
+ * The channel select register:
+ *  0x00 = byte regs
+ *  0x40 = channel select
+ *  0x80 = word regs
+ */
+static void inline occanpci_set_channel(occan_priv *priv, int channel){
+	unsigned int *chan_sel = (unsigned int *)(((unsigned int)priv->regs & ~0xff)+0x40);
+	if ( channel == 0 )
+	  *chan_sel = 0;
+	else
+		*chan_sel = 0xffffffff;
+}
+
+int occan_pci_register(amba_confarea_type *bus)
+{
+	/* Setup configuration */
+	
+	/* Register the driver */
+	return OCCAN_PREFIX(_register)(bus);
+}
+
+
+/* Call this from PCI interrupt handler 
+ * irq = the irq number of the HW device local to that IRQMP controller
+ * 
+ */
+void occanpci_interrupt_handler(int irq, void *arg){
+	occan_interrupt(arg);
+}