blackfin: scb: Add system crossbar init code.

If SCB exists in select blackfin cpu, developer can change the SCB
priority in kernel configuration.

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Steven Miao <realmz6@gmail.com>

1 files changed, 232 insertions, 0 deletions

diff --git a/arch/blackfin/mach-bf609/scb.c b/arch/blackfin/mach-bf609/scb.c
new file mode 100644
index 000000000000..615c7a554d6b
--- /dev/null
+++ b/arch/blackfin/mach-bf609/scb.c
@@ -0,0 +1,232 @@
+/*
+ * arch/blackfin/mach-common/scb-init.c - reprogram system cross bar priority
+ *
+ * Copyright 2012 Analog Devices Inc.
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#include <asm/blackfin.h>
+#include <asm/scb.h>
+
+struct scb_mi_prio scb_data[] = {
+#ifdef CONFIG_SCB0_MI0
+	{ REG_SCB0_ARBR0, REG_SCB0_ARBW0, 32, {
+		CONFIG_SCB0_MI0_SLOT0,
+		CONFIG_SCB0_MI0_SLOT1,
+		CONFIG_SCB0_MI0_SLOT2,
+		CONFIG_SCB0_MI0_SLOT3,
+		CONFIG_SCB0_MI0_SLOT4,
+		CONFIG_SCB0_MI0_SLOT5,
+		CONFIG_SCB0_MI0_SLOT6,
+		CONFIG_SCB0_MI0_SLOT7,
+		CONFIG_SCB0_MI0_SLOT8,
+		CONFIG_SCB0_MI0_SLOT9,
+		CONFIG_SCB0_MI0_SLOT10,
+		CONFIG_SCB0_MI0_SLOT11,
+		CONFIG_SCB0_MI0_SLOT12,
+		CONFIG_SCB0_MI0_SLOT13,
+		CONFIG_SCB0_MI0_SLOT14,
+		CONFIG_SCB0_MI0_SLOT15,
+		CONFIG_SCB0_MI0_SLOT16,
+		CONFIG_SCB0_MI0_SLOT17,
+		CONFIG_SCB0_MI0_SLOT18,
+		CONFIG_SCB0_MI0_SLOT19,
+		CONFIG_SCB0_MI0_SLOT20,
+		CONFIG_SCB0_MI0_SLOT21,
+		CONFIG_SCB0_MI0_SLOT22,
+		CONFIG_SCB0_MI0_SLOT23,
+		CONFIG_SCB0_MI0_SLOT24,
+		CONFIG_SCB0_MI0_SLOT25,
+		CONFIG_SCB0_MI0_SLOT26,
+		CONFIG_SCB0_MI0_SLOT27,
+		CONFIG_SCB0_MI0_SLOT28,
+		CONFIG_SCB0_MI0_SLOT29,
+		CONFIG_SCB0_MI0_SLOT30,
+		CONFIG_SCB0_MI0_SLOT31
+		},
+	},
+#endif
+#ifdef CONFIG_SCB0_MI1
+	{ REG_SCB0_ARBR1, REG_SCB0_ARBW1, 32, {
+		CONFIG_SCB0_MI1_SLOT0,
+		CONFIG_SCB0_MI1_SLOT1,
+		CONFIG_SCB0_MI1_SLOT2,
+		CONFIG_SCB0_MI1_SLOT3,
+		CONFIG_SCB0_MI1_SLOT4,
+		CONFIG_SCB0_MI1_SLOT5,
+		CONFIG_SCB0_MI1_SLOT6,
+		CONFIG_SCB0_MI1_SLOT7,
+		CONFIG_SCB0_MI1_SLOT8,
+		CONFIG_SCB0_MI1_SLOT9,
+		CONFIG_SCB0_MI1_SLOT10,
+		CONFIG_SCB0_MI1_SLOT11,
+		CONFIG_SCB0_MI1_SLOT12,
+		CONFIG_SCB0_MI1_SLOT13,
+		CONFIG_SCB0_MI1_SLOT14,
+		CONFIG_SCB0_MI1_SLOT15,
+		CONFIG_SCB0_MI1_SLOT16,
+		CONFIG_SCB0_MI1_SLOT17,
+		CONFIG_SCB0_MI1_SLOT18,
+		CONFIG_SCB0_MI1_SLOT19,
+		CONFIG_SCB0_MI1_SLOT20,
+		CONFIG_SCB0_MI1_SLOT21,
+		CONFIG_SCB0_MI1_SLOT22,
+		CONFIG_SCB0_MI1_SLOT23,
+		CONFIG_SCB0_MI1_SLOT24,
+		CONFIG_SCB0_MI1_SLOT25,
+		CONFIG_SCB0_MI1_SLOT26,
+		CONFIG_SCB0_MI1_SLOT27,
+		CONFIG_SCB0_MI1_SLOT28,
+		CONFIG_SCB0_MI1_SLOT29,
+		CONFIG_SCB0_MI1_SLOT30,
+		CONFIG_SCB0_MI1_SLOT31
+		},
+	},
+#endif
+#ifdef CONFIG_SCB0_MI2
+	{ REG_SCB0_ARBR2, REG_SCB0_ARBW2, 32, {
+		CONFIG_SCB0_MI2_SLOT0,
+		CONFIG_SCB0_MI2_SLOT1,
+		CONFIG_SCB0_MI2_SLOT2,
+		CONFIG_SCB0_MI2_SLOT3,
+		CONFIG_SCB0_MI2_SLOT4,
+		CONFIG_SCB0_MI2_SLOT5,
+		CONFIG_SCB0_MI2_SLOT6,
+		CONFIG_SCB0_MI2_SLOT7,
+		CONFIG_SCB0_MI2_SLOT8,
+		CONFIG_SCB0_MI2_SLOT9,
+		CONFIG_SCB0_MI2_SLOT10,
+		CONFIG_SCB0_MI2_SLOT11,
+		CONFIG_SCB0_MI2_SLOT12,
+		CONFIG_SCB0_MI2_SLOT13,
+		CONFIG_SCB0_MI2_SLOT14,
+		CONFIG_SCB0_MI2_SLOT15,
+		CONFIG_SCB0_MI2_SLOT16,
+		CONFIG_SCB0_MI2_SLOT17,
+		CONFIG_SCB0_MI2_SLOT18,
+		CONFIG_SCB0_MI2_SLOT19,
+		CONFIG_SCB0_MI2_SLOT20,
+		CONFIG_SCB0_MI2_SLOT21,
+		CONFIG_SCB0_MI2_SLOT22,
+		CONFIG_SCB0_MI2_SLOT23,
+		CONFIG_SCB0_MI2_SLOT24,
+		CONFIG_SCB0_MI2_SLOT25,
+		CONFIG_SCB0_MI2_SLOT26,
+		CONFIG_SCB0_MI2_SLOT27,
+		CONFIG_SCB0_MI2_SLOT28,
+		CONFIG_SCB0_MI2_SLOT29,
+		CONFIG_SCB0_MI2_SLOT30,
+		CONFIG_SCB0_MI2_SLOT31
+		},
+	},
+#endif
+#ifdef CONFIG_SCB0_MI3
+	{ REG_SCB0_ARBR3, REG_SCB0_ARBW3, 32, {
+		CONFIG_SCB0_MI3_SLOT0,
+		CONFIG_SCB0_MI3_SLOT1,
+		CONFIG_SCB0_MI3_SLOT2,
+		CONFIG_SCB0_MI3_SLOT3,
+		CONFIG_SCB0_MI3_SLOT4,
+		CONFIG_SCB0_MI3_SLOT5,
+		CONFIG_SCB0_MI3_SLOT6,
+		CONFIG_SCB0_MI3_SLOT7,
+		CONFIG_SCB0_MI3_SLOT8,
+		CONFIG_SCB0_MI3_SLOT9,
+		CONFIG_SCB0_MI3_SLOT10,
+		CONFIG_SCB0_MI3_SLOT11,
+		CONFIG_SCB0_MI3_SLOT12,
+		CONFIG_SCB0_MI3_SLOT13,
+		CONFIG_SCB0_MI3_SLOT14,
+		CONFIG_SCB0_MI3_SLOT15,
+		CONFIG_SCB0_MI3_SLOT16,
+		CONFIG_SCB0_MI3_SLOT17,
+		CONFIG_SCB0_MI3_SLOT18,
+		CONFIG_SCB0_MI3_SLOT19,
+		CONFIG_SCB0_MI3_SLOT20,
+		CONFIG_SCB0_MI3_SLOT21,
+		CONFIG_SCB0_MI3_SLOT22,
+		CONFIG_SCB0_MI3_SLOT23,
+		CONFIG_SCB0_MI3_SLOT24,
+		CONFIG_SCB0_MI3_SLOT25,
+		CONFIG_SCB0_MI3_SLOT26,
+		CONFIG_SCB0_MI3_SLOT27,
+		CONFIG_SCB0_MI3_SLOT28,
+		CONFIG_SCB0_MI3_SLOT29,
+		CONFIG_SCB0_MI3_SLOT30,
+		CONFIG_SCB0_MI3_SLOT31
+		},
+	},
+#endif
+#ifdef CONFIG_SCB0_MI4
+	{ REG_SCB0_ARBR4, REG_SCB4_ARBW0, 32, {
+		CONFIG_SCB0_MI4_SLOT0,
+		CONFIG_SCB0_MI4_SLOT1,
+		CONFIG_SCB0_MI4_SLOT2,
+		CONFIG_SCB0_MI4_SLOT3,
+		CONFIG_SCB0_MI4_SLOT4,
+		CONFIG_SCB0_MI4_SLOT5,
+		CONFIG_SCB0_MI4_SLOT6,
+		CONFIG_SCB0_MI4_SLOT7,
+		CONFIG_SCB0_MI4_SLOT8,
+		CONFIG_SCB0_MI4_SLOT9,
+		CONFIG_SCB0_MI4_SLOT10,
+		CONFIG_SCB0_MI4_SLOT11,
+		CONFIG_SCB0_MI4_SLOT12,
+		CONFIG_SCB0_MI4_SLOT13,
+		CONFIG_SCB0_MI4_SLOT14,
+		CONFIG_SCB0_MI4_SLOT15,
+		CONFIG_SCB0_MI4_SLOT16,
+		CONFIG_SCB0_MI4_SLOT17,
+		CONFIG_SCB0_MI4_SLOT18,
+		CONFIG_SCB0_MI4_SLOT19,
+		CONFIG_SCB0_MI4_SLOT20,
+		CONFIG_SCB0_MI4_SLOT21,
+		CONFIG_SCB0_MI4_SLOT22,
+		CONFIG_SCB0_MI4_SLOT23,
+		CONFIG_SCB0_MI4_SLOT24,
+		CONFIG_SCB0_MI4_SLOT25,
+		CONFIG_SCB0_MI4_SLOT26,
+		CONFIG_SCB0_MI4_SLOT27,
+		CONFIG_SCB0_MI4_SLOT28,
+		CONFIG_SCB0_MI4_SLOT29,
+		CONFIG_SCB0_MI4_SLOT30,
+		CONFIG_SCB0_MI4_SLOT31
+		},
+	},
+#endif
+#ifdef CONFIG_SCB0_MI5
+	{ REG_SCB0_ARBR5, REG_SCB0_ARBW5, 16, {
+		CONFIG_SCB0_MI5_SLOT0,
+		CONFIG_SCB0_MI5_SLOT1,
+		CONFIG_SCB0_MI5_SLOT2,
+		CONFIG_SCB0_MI5_SLOT3,
+		CONFIG_SCB0_MI5_SLOT4,
+		CONFIG_SCB0_MI5_SLOT5,
+		CONFIG_SCB0_MI5_SLOT6,
+		CONFIG_SCB0_MI5_SLOT7,
+		CONFIG_SCB0_MI5_SLOT8,
+		CONFIG_SCB0_MI5_SLOT9,
+		CONFIG_SCB0_MI5_SLOT10,
+		CONFIG_SCB0_MI5_SLOT11,
+		CONFIG_SCB0_MI5_SLOT12,
+		CONFIG_SCB0_MI5_SLOT13,
+		CONFIG_SCB0_MI5_SLOT14,
+		CONFIG_SCB0_MI5_SLOT15,
+		},
+	},
+#endif
+/*
+	{ REG_SCB1_ARBR0, REG_SCB1_ARBW0, scb1_mi0, 20 },
+	{ REG_SCB2_ARBR0, REG_SCB2_ARBW0, scb2_mi0, 10 },
+	{ REG_SCB3_ARBR0, REG_SCB3_ARBW0, scb3_mi0, 16 },
+	{ REG_SCB4_ARBR0, REG_SCB4_ARBW0, scb4_mi0, 16 },
+	{ REG_SCB5_ARBR0, REG_SCB5_ARBW0, scb5_mi0, 8 },
+	{ REG_SCB6_ARBR0, REG_SCB6_ARBW0, scb6_mi0, 4 },
+	{ REG_SCB7_ARBR0, REG_SCB7_ARBW0, scb7_mi0, 6 },
+	{ REG_SCB8_ARBR0, REG_SCB8_ARBW0, scb8_mi0, 8 },
+	{ REG_SCB9_ARBR0, REG_SCB9_ARBW0, scb9_mi0, 10 },
+	{ REG_SCB10_ARBR0, REG_SCB10_ARBW0, scb20_mi0, 16 },
+*/
+	{ 0, }
+};