| /* |
| * tmm.h |
| * |
| * TMM interface definition for TI TILER driver. |
| * |
| * Author: Lajos Molnar <molnar@ti.com> |
| * |
| * Copyright (C) 2009-2010 Texas Instruments, Inc. |
| * |
| * This package is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| * |
| * THIS PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR |
| * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED |
| * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. |
| */ |
| #ifndef TMM_H |
| #define TMM_H |
| |
| #include <mach/dmm.h> |
| /** |
| * TMM interface |
| */ |
| struct tmm { |
| void *pvt; |
| |
| /* function table */ |
| u32 *(*get) (struct tmm *tmm, u32 num_pages); |
| void (*free) (struct tmm *tmm, u32 *pages); |
| s32 (*map) (struct tmm *tmm, struct pat_area area, u32 page_pa); |
| void (*clear) (struct tmm *tmm, struct pat_area area); |
| void (*deinit) (struct tmm *tmm); |
| }; |
| |
| /** |
| * Request a set of pages from the DMM free page stack. |
| * @return a pointer to a list of physical page addresses. |
| */ |
| static inline |
| u32 *tmm_get(struct tmm *tmm, u32 num_pages) |
| { |
| if (tmm && tmm->pvt) |
| return tmm->get(tmm, num_pages); |
| return NULL; |
| } |
| |
| /** |
| * Return a set of used pages to the DMM free page stack. |
| * @param list a pointer to a list of physical page addresses. |
| */ |
| static inline |
| void tmm_free(struct tmm *tmm, u32 *pages) |
| { |
| if (tmm && tmm->pvt) |
| tmm->free(tmm, pages); |
| } |
| |
| /** |
| * Program the physical address translator. |
| * @param area PAT area |
| * @param list of pages |
| */ |
| static inline |
| s32 tmm_map(struct tmm *tmm, struct pat_area area, u32 page_pa) |
| { |
| if (tmm && tmm->map && tmm->pvt) |
| return tmm->map(tmm, area, page_pa); |
| return -ENODEV; |
| } |
| |
| /** |
| * Clears the physical address translator. |
| * @param area PAT area |
| */ |
| static inline |
| void tmm_clear(struct tmm *tmm, struct pat_area area) |
| { |
| if (tmm && tmm->clear && tmm->pvt) |
| tmm->clear(tmm, area); |
| } |
| |
| /** |
| * Checks whether tiler memory manager supports mapping |
| */ |
| static inline |
| bool tmm_can_map(struct tmm *tmm) |
| { |
| return tmm && tmm->map; |
| } |
| |
| /** |
| * Deinitialize tiler memory manager |
| */ |
| static inline |
| void tmm_deinit(struct tmm *tmm) |
| { |
| if (tmm && tmm->pvt) |
| tmm->deinit(tmm); |
| } |
| |
| /** |
| * TMM implementation for PAT support. |
| * |
| * Initialize TMM for PAT with given id. |
| */ |
| struct tmm *tmm_pat_init(u32 pat_id); |
| |
| #endif |
