nuclear@1: #include "copper.h"
nuclear@1: #include "hwregs.h"
nuclear@1: 
nuclear@1: uint32_t *copperlist, *copperlist_end;
nuclear@1: static uint32_t *copmem, *curlist;
nuclear@1: static int mode, copmem_size;
nuclear@1: 
nuclear@1: extern uint32_t _mem_start;
nuclear@1: 
nuclear@1: int init_copper(int maxlist, int nlists)
nuclear@1: {
nuclear@1: 	/* allocate and set new copper lists */
nuclear@1: 	if(maxlist <= 0) maxlist = 256;
nuclear@1: 	mode = nlists >= COPPER_DOUBLE ? COPPER_DOUBLE : COPPER_SINGLE;
nuclear@1: 
nuclear@1: 	copmem_size = maxlist * 4 * mode;
nuclear@1: 	copmem = (uint32_t*)_mem_start;
nuclear@1: 
nuclear@1: 	curlist = copperlist = copmem;
nuclear@1: 	*curlist = COPPER_END;
nuclear@1: 
nuclear@1: 	if(mode == COPPER_DOUBLE) {
nuclear@1: 		copperlist = curlist + maxlist;
nuclear@1: 		*copperlist = COPPER_END;
nuclear@1: 	}
nuclear@1: 	copperlist_end = copperlist;
nuclear@1: 
nuclear@1: 	REG32_COP1LC = (uint32_t)curlist;
nuclear@1: 	REG_COPJMP1 = 0;	/* causes copper to read COP1LC */
nuclear@1: 	return 0;
nuclear@1: }
nuclear@1: 
nuclear@1: void cleanup_copper(void)
nuclear@1: {
nuclear@1: }
nuclear@1: 
nuclear@1: void enable_copper(void)
nuclear@1: {
nuclear@1: 	REG_DMACON = SETBITS(DMA_COPPER);
nuclear@1: }
nuclear@1: 
nuclear@1: void disable_copper(void)
nuclear@1: {
nuclear@1: 	REG_DMACON = CLRBITS(DMA_COPPER);
nuclear@1: }
nuclear@1: 
nuclear@1: void clear_copper(void)
nuclear@1: {
nuclear@1: 	copperlist_end = copperlist;
nuclear@1: 	*copperlist_end = COPPER_END;
nuclear@1: }
nuclear@1: 
nuclear@1: void add_copper(uint32_t cmd)
nuclear@1: {
nuclear@1: 	*copperlist_end++ = cmd;
nuclear@1: }
nuclear@1: 
nuclear@1: void sort_copper(void)
nuclear@1: {
nuclear@1: 	/* TODO */
nuclear@1: }
nuclear@1: 
nuclear@1: void swap_copper(void)
nuclear@1: {
nuclear@1: 	if(mode == COPPER_DOUBLE) {
nuclear@1: 		uint32_t *tmpptr;
nuclear@1: 		tmpptr = curlist;
nuclear@1: 		curlist = copperlist;
nuclear@1: 		copperlist = copperlist_end = tmpptr;
nuclear@1: 
nuclear@1: 		REG32_COP1LC = (uint32_t)curlist;
nuclear@1: 		REG_COPJMP1 = 0;
nuclear@1: 	} else {
nuclear@1: 		copperlist_end = curlist;
nuclear@1: 	}
nuclear@1: 	*copperlist_end = COPPER_END;
nuclear@1: }