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/*!
 * @brief Defines for simplifying SW accesses to the dev_ctrl interrupt tree.
 *        These are generic defines ued in addition to architecure-specific
 *        defines in dev_vm_addendum.h
 *
 */

//
// Notes on the terms used below:
// Subtree: The HW tree is a 64-way tree that consists of 2 TOP level interrupt
// registers, 32 bits each. Each of these 64 is referred to as a subtree.
// Leaf: Each of these 64 subtrees are associated with a pair of LEAF registers
// giving us a total of 128 LEAF registers.
// GPU vector: The 128 LEAF registers give us a total of (128*32) GPU vectors
// giving us a total of 4096 GPU vectors
//

//
// Given a subtree index, the below macros give us the index of the TOP level
// register and the bit within the TOP level register to program for that
// subtree.
//
#define NV_CTRL_INTR_SUBTREE_TO_TOP_IDX(i) (((NvU32)(i)) / 32)
#define NV_CTRL_INTR_SUBTREE_TO_TOP_BIT(i) (((NvU32)(i)) % 32)

//
// Given a subtree index, the below macros give us the two LEAF register indices
// that correspond to that subtree.
//
#define NV_CTRL_INTR_SUBTREE_TO_LEAF_IDX_START(i) (((NvU32)(i)) * 2)
#define NV_CTRL_INTR_SUBTREE_TO_LEAF_IDX_END(i)   ((((NvU32)(i)) * 2) + 1)

#define NV_CTRL_INTR_LEAF_IDX_TO_SUBTREE(i) (((NvU32)(i)) / 2)

//
// Given a LEAF register index, the below macros give us the range of GPU
// interrupt vectors that correspond to those leafs.
//
#define NV_CTRL_INTR_LEAF_IDX_TO_GPU_VECTOR_START(i) (((NvU32)(i)) * 32)
#define NV_CTRL_INTR_LEAF_IDX_TO_GPU_VECTOR_END(i)   ((((NvU32)(i)) * 32) + 31)

//
// Given a GPU interrupt vector, the below macros give us the index of the
// LEAF register and the bit within the LEAF register to program for that
// GPU interrupt vector.
//
#define NV_CTRL_INTR_GPU_VECTOR_TO_LEAF_REG(i) (((NvU32)(i)) / 32)
#define NV_CTRL_INTR_GPU_VECTOR_TO_LEAF_BIT(i) (((NvU32)(i)) % 32)

//
// Given a GPU interrupt vector, the below macro gives us the subtree in which
// it belongs.
//
#define NV_CTRL_INTR_GPU_VECTOR_TO_SUBTREE(i) \
    ((NV_CTRL_INTR_GPU_VECTOR_TO_LEAF_REG(i)) / 2)

// First index of doorbell which is controlled by VF
#define NV_CTRL_INTR_GPU_DOORBELL_INDEX_VF_START 2048

// The max number of leaf registers we expect
#define NV_MAX_INTR_LEAVES 16

// In SW, this specifies an invalid interrupt vector
#define NV_INTR_VECTOR_INVALID   (NV_U32_MAX)