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-rw-r--r--arch/powerpc/include/asm/qe_ic.h128
1 files changed, 128 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/qe_ic.h b/arch/powerpc/include/asm/qe_ic.h
new file mode 100644
index 000000000000..56a7745ca343
--- /dev/null
+++ b/arch/powerpc/include/asm/qe_ic.h
@@ -0,0 +1,128 @@
+/*
+ * Copyright (C) 2006 Freescale Semicondutor, Inc. All rights reserved.
+ *
+ * Authors: Shlomi Gridish <gridish@freescale.com>
+ * Li Yang <leoli@freescale.com>
+ *
+ * Description:
+ * QE IC external definitions and structure.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+#ifndef _ASM_POWERPC_QE_IC_H
+#define _ASM_POWERPC_QE_IC_H
+
+#include <linux/irq.h>
+
+#define NUM_OF_QE_IC_GROUPS 6
+
+/* Flags when we init the QE IC */
+#define QE_IC_SPREADMODE_GRP_W 0x00000001
+#define QE_IC_SPREADMODE_GRP_X 0x00000002
+#define QE_IC_SPREADMODE_GRP_Y 0x00000004
+#define QE_IC_SPREADMODE_GRP_Z 0x00000008
+#define QE_IC_SPREADMODE_GRP_RISCA 0x00000010
+#define QE_IC_SPREADMODE_GRP_RISCB 0x00000020
+
+#define QE_IC_LOW_SIGNAL 0x00000100
+#define QE_IC_HIGH_SIGNAL 0x00000200
+
+#define QE_IC_GRP_W_PRI0_DEST_SIGNAL_HIGH 0x00001000
+#define QE_IC_GRP_W_PRI1_DEST_SIGNAL_HIGH 0x00002000
+#define QE_IC_GRP_X_PRI0_DEST_SIGNAL_HIGH 0x00004000
+#define QE_IC_GRP_X_PRI1_DEST_SIGNAL_HIGH 0x00008000
+#define QE_IC_GRP_Y_PRI0_DEST_SIGNAL_HIGH 0x00010000
+#define QE_IC_GRP_Y_PRI1_DEST_SIGNAL_HIGH 0x00020000
+#define QE_IC_GRP_Z_PRI0_DEST_SIGNAL_HIGH 0x00040000
+#define QE_IC_GRP_Z_PRI1_DEST_SIGNAL_HIGH 0x00080000
+#define QE_IC_GRP_RISCA_PRI0_DEST_SIGNAL_HIGH 0x00100000
+#define QE_IC_GRP_RISCA_PRI1_DEST_SIGNAL_HIGH 0x00200000
+#define QE_IC_GRP_RISCB_PRI0_DEST_SIGNAL_HIGH 0x00400000
+#define QE_IC_GRP_RISCB_PRI1_DEST_SIGNAL_HIGH 0x00800000
+#define QE_IC_GRP_W_DEST_SIGNAL_SHIFT (12)
+
+/* QE interrupt sources groups */
+enum qe_ic_grp_id {
+ QE_IC_GRP_W = 0, /* QE interrupt controller group W */
+ QE_IC_GRP_X, /* QE interrupt controller group X */
+ QE_IC_GRP_Y, /* QE interrupt controller group Y */
+ QE_IC_GRP_Z, /* QE interrupt controller group Z */
+ QE_IC_GRP_RISCA, /* QE interrupt controller RISC group A */
+ QE_IC_GRP_RISCB /* QE interrupt controller RISC group B */
+};
+
+void qe_ic_init(struct device_node *node, unsigned int flags,
+ void (*low_handler)(unsigned int irq, struct irq_desc *desc),
+ void (*high_handler)(unsigned int irq, struct irq_desc *desc));
+void qe_ic_set_highest_priority(unsigned int virq, int high);
+int qe_ic_set_priority(unsigned int virq, unsigned int priority);
+int qe_ic_set_high_priority(unsigned int virq, unsigned int priority, int high);
+
+struct qe_ic;
+unsigned int qe_ic_get_low_irq(struct qe_ic *qe_ic);
+unsigned int qe_ic_get_high_irq(struct qe_ic *qe_ic);
+
+static inline void qe_ic_cascade_low_ipic(unsigned int irq,
+ struct irq_desc *desc)
+{
+ struct qe_ic *qe_ic = desc->handler_data;
+ unsigned int cascade_irq = qe_ic_get_low_irq(qe_ic);
+
+ if (cascade_irq != NO_IRQ)
+ generic_handle_irq(cascade_irq);
+}
+
+static inline void qe_ic_cascade_high_ipic(unsigned int irq,
+ struct irq_desc *desc)
+{
+ struct qe_ic *qe_ic = desc->handler_data;
+ unsigned int cascade_irq = qe_ic_get_high_irq(qe_ic);
+
+ if (cascade_irq != NO_IRQ)
+ generic_handle_irq(cascade_irq);
+}
+
+static inline void qe_ic_cascade_low_mpic(unsigned int irq,
+ struct irq_desc *desc)
+{
+ struct qe_ic *qe_ic = desc->handler_data;
+ unsigned int cascade_irq = qe_ic_get_low_irq(qe_ic);
+
+ if (cascade_irq != NO_IRQ)
+ generic_handle_irq(cascade_irq);
+
+ desc->chip->eoi(irq);
+}
+
+static inline void qe_ic_cascade_high_mpic(unsigned int irq,
+ struct irq_desc *desc)
+{
+ struct qe_ic *qe_ic = desc->handler_data;
+ unsigned int cascade_irq = qe_ic_get_high_irq(qe_ic);
+
+ if (cascade_irq != NO_IRQ)
+ generic_handle_irq(cascade_irq);
+
+ desc->chip->eoi(irq);
+}
+
+static inline void qe_ic_cascade_muxed_mpic(unsigned int irq,
+ struct irq_desc *desc)
+{
+ struct qe_ic *qe_ic = desc->handler_data;
+ unsigned int cascade_irq;
+
+ cascade_irq = qe_ic_get_high_irq(qe_ic);
+ if (cascade_irq == NO_IRQ)
+ cascade_irq = qe_ic_get_low_irq(qe_ic);
+
+ if (cascade_irq != NO_IRQ)
+ generic_handle_irq(cascade_irq);
+
+ desc->chip->eoi(irq);
+}
+
+#endif /* _ASM_POWERPC_QE_IC_H */
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