91 lines
2.9 KiB
C
91 lines
2.9 KiB
C
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/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef ASM_CELL_PIC_H
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#define ASM_CELL_PIC_H
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#ifdef __KERNEL__
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/*
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* Mapping of IIC pending bits into per-node interrupt numbers.
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*
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* Interrupt numbers are in the range 0...0x1ff where the top bit
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* (0x100) represent the source node. Only 2 nodes are supported with
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* the current code though it's trivial to extend that if necessary using
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* higher level bits
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*
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* The bottom 8 bits are split into 2 type bits and 6 data bits that
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* depend on the type:
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*
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* 00 (0x00 | data) : normal interrupt. data is (class << 4) | source
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* 01 (0x40 | data) : IO exception. data is the exception number as
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* defined by bit numbers in IIC_SR
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* 10 (0x80 | data) : IPI. data is the IPI number (obtained from the priority)
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* and node is always 0 (IPIs are per-cpu, their source is
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* not relevant)
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* 11 (0xc0 | data) : reserved
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*
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* In addition, interrupt number 0x80000000 is defined as always invalid
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* (that is the node field is expected to never extend to move than 23 bits)
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*
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*/
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enum {
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IIC_IRQ_INVALID = 0x80000000u,
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IIC_IRQ_NODE_MASK = 0x100,
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IIC_IRQ_NODE_SHIFT = 8,
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IIC_IRQ_MAX = 0x1ff,
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IIC_IRQ_TYPE_MASK = 0xc0,
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IIC_IRQ_TYPE_NORMAL = 0x00,
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IIC_IRQ_TYPE_IOEXC = 0x40,
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IIC_IRQ_TYPE_IPI = 0x80,
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IIC_IRQ_CLASS_SHIFT = 4,
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IIC_IRQ_CLASS_0 = 0x00,
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IIC_IRQ_CLASS_1 = 0x10,
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IIC_IRQ_CLASS_2 = 0x20,
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IIC_SOURCE_COUNT = 0x200,
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/* Here are defined the various source/dest units. Avoid using those
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* definitions if you can, they are mostly here for reference
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*/
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IIC_UNIT_SPU_0 = 0x4,
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IIC_UNIT_SPU_1 = 0x7,
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IIC_UNIT_SPU_2 = 0x3,
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IIC_UNIT_SPU_3 = 0x8,
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IIC_UNIT_SPU_4 = 0x2,
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IIC_UNIT_SPU_5 = 0x9,
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IIC_UNIT_SPU_6 = 0x1,
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IIC_UNIT_SPU_7 = 0xa,
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IIC_UNIT_IOC_0 = 0x0,
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IIC_UNIT_IOC_1 = 0xb,
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IIC_UNIT_THREAD_0 = 0xe, /* target only */
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IIC_UNIT_THREAD_1 = 0xf, /* target only */
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IIC_UNIT_IIC = 0xe, /* source only (IO exceptions) */
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/* Base numbers for the external interrupts */
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IIC_IRQ_EXT_IOIF0 =
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IIC_IRQ_TYPE_NORMAL | IIC_IRQ_CLASS_2 | IIC_UNIT_IOC_0,
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IIC_IRQ_EXT_IOIF1 =
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IIC_IRQ_TYPE_NORMAL | IIC_IRQ_CLASS_2 | IIC_UNIT_IOC_1,
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/* Base numbers for the IIC_ISR interrupts */
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IIC_IRQ_IOEX_TMI = IIC_IRQ_TYPE_IOEXC | IIC_IRQ_CLASS_1 | 63,
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IIC_IRQ_IOEX_PMI = IIC_IRQ_TYPE_IOEXC | IIC_IRQ_CLASS_1 | 62,
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IIC_IRQ_IOEX_ATI = IIC_IRQ_TYPE_IOEXC | IIC_IRQ_CLASS_1 | 61,
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IIC_IRQ_IOEX_MATBFI = IIC_IRQ_TYPE_IOEXC | IIC_IRQ_CLASS_1 | 60,
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IIC_IRQ_IOEX_ELDI = IIC_IRQ_TYPE_IOEXC | IIC_IRQ_CLASS_1 | 59,
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/* Which bits in IIC_ISR are edge sensitive */
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IIC_ISR_EDGE_MASK = 0x4ul,
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};
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extern void iic_init_IRQ(void);
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extern void iic_message_pass(int cpu, int msg);
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extern void iic_request_IPIs(void);
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extern void iic_setup_cpu(void);
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extern u8 iic_get_target_id(int cpu);
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extern void spider_init_IRQ(void);
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extern void iic_set_interrupt_routing(int cpu, int thread, int priority);
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#endif
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#endif /* ASM_CELL_PIC_H */
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