18 #include "tcm.h"
154 static s32 sita_reserve_1d(struct tcm *tcm, u32 num_slots,  in sita_reserve_1d()  argument
160 	spin_lock(&(tcm->lock));  in sita_reserve_1d()
161 	ret = r2l_b2t_1d(num_slots, &pos, tcm->bitmap, tcm->map_size);  in sita_reserve_1d()
163 		area->p0.x = pos % tcm->width;  in sita_reserve_1d()
164 		area->p0.y = pos / tcm->width;  in sita_reserve_1d()
165 		area->p1.x = (pos + num_slots - 1) % tcm->width;  in sita_reserve_1d()
166 		area->p1.y = (pos + num_slots - 1) / tcm->width;  in sita_reserve_1d()
168 	spin_unlock(&(tcm->lock));  in sita_reserve_1d()
173 static s32 sita_reserve_2d(struct tcm *tcm, u16 h, u16 w, u16 align,  in sita_reserve_2d()  argument
180 	spin_lock(&(tcm->lock));  in sita_reserve_2d()
181 	ret = l2r_t2b(w, h, align, offset, &pos, slot_bytes, tcm->bitmap,  in sita_reserve_2d()
182 			tcm->map_size, tcm->width);  in sita_reserve_2d()
185 		area->p0.x = pos % tcm->width;  in sita_reserve_2d()
186 		area->p0.y = pos / tcm->width;  in sita_reserve_2d()
190 	spin_unlock(&(tcm->lock));  in sita_reserve_2d()
195 static void sita_deinit(struct tcm *tcm)  in sita_deinit()  argument
197 	kfree(tcm);  in sita_deinit()
200 static s32 sita_free(struct tcm *tcm, struct tcm_area *area)  in sita_free()  argument
205 	pos = area->p0.x + area->p0.y * tcm->width;  in sita_free()
210 		w = area->p1.x + area->p1.y * tcm->width - pos + 1;  in sita_free()
214 	spin_lock(&(tcm->lock));  in sita_free()
215 	free_slots(pos, w, h, tcm->bitmap, tcm->width);  in sita_free()
216 	spin_unlock(&(tcm->lock));  in sita_free()
220 struct tcm *sita_init(u16 width, u16 height)  in sita_init()
222 	struct tcm *tcm;  in sita_init()  local
228 	tcm = kzalloc(sizeof(*tcm) + map_size, GFP_KERNEL);  in sita_init()
229 	if (!tcm)  in sita_init()
233 	tcm->height = height;  in sita_init()
234 	tcm->width = width;  in sita_init()
235 	tcm->reserve_2d = sita_reserve_2d;  in sita_init()
236 	tcm->reserve_1d = sita_reserve_1d;  in sita_init()
237 	tcm->free = sita_free;  in sita_init()
238 	tcm->deinit = sita_deinit;  in sita_init()
240 	spin_lock_init(&tcm->lock);  in sita_init()
241 	tcm->bitmap = (unsigned long *)(tcm + 1);  in sita_init()
242 	bitmap_clear(tcm->bitmap, 0, width*height);  in sita_init()
244 	tcm->map_size = width*height;  in sita_init()
246 	return tcm;  in sita_init()