pc98/cbus/scvtb.c

43 #define attr_offset(vtb)	((vtb)->vtb_size*sizeof(u_int16_t))
45 #define vtb_pointer(vtb, at)					\
46     ((vtb)->vtb_buffer + sizeof(u_int16_t)*(at))
48 #define vtb_wrap(vtb, at, offset)				\
49     (((at) + (offset) + (vtb)->vtb_size)%(vtb)->vtb_size)
89 sc_vtb_init(sc_vtb_t *vtb, int type, int cols, int rows, void *buf, int wait)
91 	vtb->vtb_flags = 0;
92 	vtb->vtb_type = type;
93 	vtb->vtb_cols = cols;
94 	vtb->vtb_rows = rows;
95 	vtb->vtb_size = cols*rows;
96 	vtb->vtb_buffer = 0;
97 	vtb->vtb_tail = 0;
103 			vtb->vtb_buffer =
107 			if (vtb->vtb_buffer != 0) {
108 				vtb->vtb_flags |= VTB_ALLOCED;
111 			vtb->vtb_buffer = (vm_offset_t)buf;
113 		vtb->vtb_flags |= VTB_VALID;
116 		vtb->vtb_buffer = (vm_offset_t)buf;
117 		vtb->vtb_flags |= VTB_VALID;
125 sc_vtb_destroy(sc_vtb_t *vtb)
129 	vtb->vtb_cols = 0;
130 	vtb->vtb_rows = 0;
131 	vtb->vtb_size = 0;
132 	vtb->vtb_tail = 0;
134 	p = vtb->vtb_buffer;
135 	vtb->vtb_buffer = 0;
136 	switch (vtb->vtb_type) {
139 		if ((vtb->vtb_flags & VTB_ALLOCED) && (p != 0))
145 	vtb->vtb_flags = 0;
146 	vtb->vtb_type = VTB_INVALID;
156 sc_vtb_getc(sc_vtb_t *vtb, int at)
158 	vm_offset_t p = vtb_pointer(vtb, at);
160 	if (vtb->vtb_type == VTB_FRAMEBUFFER)
167 sc_vtb_geta(sc_vtb_t *vtb, int at)
169 	vm_offset_t p = vtb_pointer(vtb, at);
171 	if (vtb->vtb_type == VTB_FRAMEBUFFER)
174 		return (*(u_int16_t *)(p + attr_offset(vtb)) & 0xff00);
178 vtb_putc(sc_vtb_t *vtb, vm_offset_t p, int c, int a)
180 	if (vtb->vtb_type == VTB_FRAMEBUFFER) {
185 		*(u_int16_t *)(p + attr_offset(vtb)) = at2pc98(a);
190 sc_vtb_putc(sc_vtb_t *vtb, int at, int c, int a)
192 	vtb_putc(vtb, vtb_pointer(vtb, at), c, a);
196 sc_vtb_putchar(sc_vtb_t *vtb, vm_offset_t p, int c, int a)
198 	vtb_putc(vtb, p, c, a);
203 sc_vtb_pointer(sc_vtb_t *vtb, int at)
205 	return (vtb_pointer(vtb, at));
209 sc_vtb_pos(sc_vtb_t *vtb, int pos, int offset)
211 	return ((pos + offset + vtb->vtb_size)%vtb->vtb_size);
215 sc_vtb_clear(sc_vtb_t *vtb, int c, int attr)
217 	vm_offset_t p = vtb_pointer(vtb, 0);
219 	if (vtb->vtb_type == VTB_FRAMEBUFFER) {
220 		fillw_io(c, p, vtb->vtb_size);
221 		fillw_io(at2pc98(attr), p + ATTR_OFFSET_FB, vtb->vtb_size);
223 		fillw(c, (void *)p, vtb->vtb_size);
224 		fillw(at2pc98(attr), (void *)(p + attr_offset(vtb)),
225 		      vtb->vtb_size);
285 sc_vtb_seek(sc_vtb_t *vtb, int pos)
287 	vtb->vtb_tail = pos%vtb->vtb_size;
291 sc_vtb_erase(sc_vtb_t *vtb, int at, int count, int c, int attr)
295 	if (at + count > vtb->vtb_size)
296 		count = vtb->vtb_size - at;
297 	p = vtb_pointer(vtb, at);
298 	if (vtb->vtb_type == VTB_FRAMEBUFFER) {
303 		fillw(at2pc98(attr), (void *)(p + attr_offset(vtb)), count);
308 sc_vtb_move(sc_vtb_t *vtb, int from, int to, int count)
312 	if (from + count > vtb->vtb_size)
313 		count = vtb->vtb_size - from;
314 	if (to + count > vtb->vtb_size)
315 		count = vtb->vtb_size - to;
319 	p1 = vtb_pointer(vtb, from);
320 	p2 = vtb_pointer(vtb, to);
321 	if (vtb->vtb_type == VTB_FRAMEBUFFER) {
327 		bcopy((void *)(p1 + attr_offset(vtb)),
328 		      (void *)(p2 + attr_offset(vtb)), count*sizeof(u_int16_t));
333 sc_vtb_delete(sc_vtb_t *vtb, int at, int count, int c, int attr)
338 	if (at + count > vtb->vtb_size)
339 		count = vtb->vtb_size - at;
340 	len = vtb->vtb_size - at - count;
342 		p1 = vtb_pointer(vtb, at + count);
343 		p2 = vtb_pointer(vtb, at);
344 		if (vtb->vtb_type == VTB_FRAMEBUFFER) {
351 			bcopy((void *)(p1 + attr_offset(vtb)),
352 			      (void *)(p2 + attr_offset(vtb)),
356 	p1 = vtb_pointer(vtb, at + len);
357 	if (vtb->vtb_type == VTB_FRAMEBUFFER) {
358 		fillw_io(c, p1, vtb->vtb_size - at - len);
360 			 vtb->vtb_size - at - len);
362 		fillw(c, (void *)p1, vtb->vtb_size - at - len);
363 		fillw(at2pc98(attr), (void *)(p1 + attr_offset(vtb)),
364 		      vtb->vtb_size - at - len);
369 sc_vtb_ins(sc_vtb_t *vtb, int at, int count, int c, int attr)
373 	p1 = vtb_pointer(vtb, at);
374 	if (at + count > vtb->vtb_size) {
375 		count = vtb->vtb_size - at;
377 		p2 = vtb_pointer(vtb, at + count);
378 		if (vtb->vtb_type == VTB_FRAMEBUFFER) {
380 				 (vtb->vtb_size - at - count)*sizeof(u_int16_t));
383 				 (vtb->vtb_size - at - count)*sizeof(u_int16_t));
386 			      (vtb->vtb_size - at - count)*sizeof(u_int16_t));
387 			bcopy((void *)(p1 + attr_offset(vtb)),
388 			      (void *)(p2 + attr_offset(vtb)),
389 			      (vtb->vtb_size - at - count)*sizeof(u_int16_t));
392 	if (vtb->vtb_type == VTB_FRAMEBUFFER) {
397 		fillw(at2pc98(attr), (void *)(p1 + attr_offset(vtb)), count);