;;-*-Lisp-*-
(in-package goal)

;; definition of type dma-packet
(deftype dma-packet (structure)
  "The header for a DMA transfer, containing an DMA tag, and VIF tags."
  ((dma   dma-tag)
   (vif0  vif-tag)
   (vif1  vif-tag)
   (quad  uint128  :overlay-at dma)
   )
  )

;; definition for method 3 of type dma-packet
;; INFO: Used lq/sq
(defmethod inspect ((this dma-packet))
  (when (not this)
    (set! this this)
    (goto cfg-4)
    )
  (format #t "[~8x] ~A~%" this 'dma-packet)
  (format #t "~1Tdma: #x~X~%" (-> this dma))
  (format #t "~1Tvif0: #x~X~%" (-> this vif0))
  (format #t "~1Tvif1: #x~X~%" (-> this vif1))
  (format #t "~1Tquad: ~D~%" (-> this quad))
  (label cfg-4)
  this
  )

;; definition of type dma-packet-array
(deftype dma-packet-array (inline-array-class)
  "Unused dma array. Unclear how it should be used."
  ((data  dma-packet  :inline :dynamic)
   )
  )

;; definition for method 3 of type dma-packet-array
(defmethod inspect ((this dma-packet-array))
  (when (not this)
    (set! this this)
    (goto cfg-4)
    )
  (format #t "[~8x] ~A~%" this (-> this type))
  (format #t "~1Tlength: ~D~%" (-> this length))
  (format #t "~1Tallocated-length: ~D~%" (-> this allocated-length))
  (format #t "~1Tdata[0] @ #x~X~%" (-> this data))
  (label cfg-4)
  this
  )

;; failed to figure out what this is:
(set! (-> dma-packet-array heap-base) (the-as uint 16))

;; definition of type dma-gif
(deftype dma-gif (structure)
  "Believed unused GIF header type."
  ((gif   uint64   2)
   (quad  uint128  :overlay-at (-> gif 0))
   (gif0  uint64   :overlay-at (-> gif 0))
   (gif1  uint64   :overlay-at (-> gif 1))
   )
  )

;; definition for method 3 of type dma-gif
;; INFO: Used lq/sq
(defmethod inspect ((this dma-gif))
  (when (not this)
    (set! this this)
    (goto cfg-4)
    )
  (format #t "[~8x] ~A~%" this 'dma-gif)
  (format #t "~1Tgif[2] @ #x~X~%" (&-> this gif0))
  (format #t "~1Tquad: ~D~%" (-> this quad))
  (label cfg-4)
  this
  )

;; definition of type dma-gif-packet
(deftype dma-gif-packet (structure)
  "The header for a DMA transfer that goes directly to GIF, containing DMA, VIF, GIF tags."
  ((dma-vif  dma-packet  :inline)
   (gif      uint64      2)
   (gif0     uint64        :overlay-at (-> gif 0))
   (gif1     uint64        :overlay-at (-> gif 1))
   (quad     uint128     2 :overlay-at (-> dma-vif dma))
   )
  )

;; definition for method 3 of type dma-gif-packet
(defmethod inspect ((this dma-gif-packet))
  (when (not this)
    (set! this this)
    (goto cfg-4)
    )
  (format #t "[~8x] ~A~%" this 'dma-gif-packet)
  (format #t "~1Tdma-vif: #<dma-packet @ #x~X>~%" (-> this dma-vif))
  (format #t "~1Tgif[2] @ #x~X~%" (&-> this gif0))
  (format #t "~1Tquad[2] @ #x~X~%" (-> this dma-vif))
  (label cfg-4)
  this
  )

;; definition of type dma-buffer
(deftype dma-buffer (basic)
  "A buffer for DMA data."
  ((allocated-length  int32)
   (base              pointer)
   (end               pointer)
   (data              uint64  1)
   (data-buffer       uint8   :dynamic :overlay-at (-> data 0))
   )
  (:methods
    (new (symbol type int) _type_)
    )
  )

;; definition for method 3 of type dma-buffer
(defmethod inspect ((this dma-buffer))
  (when (not this)
    (set! this this)
    (goto cfg-4)
    )
  (format #t "[~8x] ~A~%" this (-> this type))
  (format #t "~1Tallocated-length: ~D~%" (-> this allocated-length))
  (format #t "~1Tbase: #x~X~%" (-> this base))
  (format #t "~1Tend: #x~X~%" (-> this end))
  (format #t "~1Tdata[1] @ #x~X~%" (-> this data))
  (label cfg-4)
  this
  )

;; definition for method 0 of type dma-buffer
(defmethod new dma-buffer ((allocation symbol) (type-to-make type) (arg0 int))
  (let ((v0-0 (object-new allocation type-to-make (+ arg0 -4 (-> type-to-make size)))))
    (set! (-> v0-0 base) (-> v0-0 data))
    (set! (-> v0-0 allocated-length) arg0)
    v0-0
    )
  )

;; definition for function dma-buffer-inplace-new
(defun dma-buffer-inplace-new ((dma-buff dma-buffer) (size-bytes int))
  "Create a dma-buffer in-place. Does not set the type of the dma-buffer object."
  (set! (-> dma-buff base) (-> dma-buff data))
  (set! (-> dma-buff allocated-length) size-bytes)
  dma-buff
  )

;; definition for method 4 of type dma-buffer
(defmethod length ((this dma-buffer))
  (-> this allocated-length)
  )

;; definition for method 5 of type dma-buffer
(defmethod asize-of ((this dma-buffer))
  (+ (-> this allocated-length) -4 (-> dma-buffer size))
  )

;; definition for function dma-buffer-length
(defun dma-buffer-length ((dma-buf dma-buffer))
  "Get length used in quadwords, rounded up."
  (shr (+ (&- (-> dma-buf base) (the-as uint (-> dma-buf data))) 15) 4)
  )

;; definition for function dma-buffer-free
(defun dma-buffer-free ((dma-buf dma-buffer))
  "Get the number of free quadwords between base and end pointers."
  (shr (+ (&- (-> dma-buf end) (the-as uint (-> dma-buf base))) 15) 4)
  )

;; definition for function dma-buffer-add-vu-function
(defun dma-buffer-add-vu-function ((arg0 dma-buffer) (arg1 vu-function) (arg2 int))
  (let ((v1-0 (the-as object (+ (the-as uint arg1) 16)))
        (a3-0 (-> arg1 qlength))
        (a1-1 (-> arg1 origin))
        )
    (while (> a3-0 0)
      (let ((t0-1 (min 127 a3-0)))
        (let* ((t1-1 arg0)
               (t2-0 (the-as object (-> t1-1 base)))
               )
          (set! (-> (the-as dma-packet t2-0) dma)
                (new 'static 'dma-tag :id (dma-tag-id ref) :addr (the-as int v1-0) :qwc t0-1)
                )
          (set! (-> (the-as dma-packet t2-0) vif0) (new 'static 'vif-tag :cmd (if (zero? arg2) 16 19)))
          (set! (-> (the-as dma-packet t2-0) vif1) (new 'static 'vif-tag :cmd (vif-cmd mpg) :num (* t0-1 2) :imm a1-1))
          (set! (-> t1-1 base) (&+ (the-as pointer t2-0) 16))
          )
        (set! v1-0 (+ (the-as uint v1-0) (* t0-1 16)))
        (set! a3-0 (- a3-0 t0-1))
        (+! a1-1 (* t0-1 2))
        )
      )
    )
  #f
  )

;; definition for function dma-buffer-send
(defun dma-buffer-send ((chan dma-bank) (buf dma-buffer))
  "Send the DMA buffer! DOES NOT TRANSFER TAG, you probably want dma-buffer-send-chain instead."
  (when (< (-> buf allocated-length) (&- (-> buf base) (the-as uint (-> buf data))))
    (crash!)
    0
    )
  (dma-send chan (the-as uint (-> buf data)) (the-as uint (dma-buffer-length buf)))
  (none)
  )

;; definition for function dma-buffer-send-chain
(defun dma-buffer-send-chain ((chan dma-bank-source) (buf dma-buffer))
  "Send the DMA buffer! Sends the tags, so this is suitable for the main graphics chain."
  (when (< (-> buf allocated-length) (&- (-> buf base) (the-as uint (-> buf data))))
    (crash!)
    0
    )
  (dma-send-chain chan (the-as uint (-> buf data)))
  (none)
  )