diff options
| author | Andy Gross <andy.gross@ti.com> | 2015-08-12 11:24:38 +0300 |
|---|---|---|
| committer | Tomi Valkeinen <tomi.valkeinen@ti.com> | 2015-12-31 12:25:47 +0300 |
| commit | 0d6fa53fd80582cc0090fc1497545ab3e502bb5e (patch) | |
| tree | 2ad89e6b74d7674a5126783f4c95f696e63f6156 /drivers/gpu/drm/omapdrm/tcm.h | |
| parent | 73d77107b8e5eba57e831b414de7eeb75a719646 (diff) | |
| download | linux-0d6fa53fd80582cc0090fc1497545ab3e502bb5e.tar.xz | |
drm/omap: Use bitmaps for TILER placement
Modified Tiler placement to utilize bitmaps for bookkeeping and
all placement algorithms. This resulted in a substantial savings
in time for all Tiler reservation and free operations. Typical
savings are in the range of 28% decrease in time taken with larger
buffers showing a 80%+ decrease.
Signed-off-by: Andy Gross <andy.gross@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Diffstat (limited to 'drivers/gpu/drm/omapdrm/tcm.h')
| -rw-r--r-- | drivers/gpu/drm/omapdrm/tcm.h | 26 |
1 files changed, 15 insertions, 11 deletions
diff --git a/drivers/gpu/drm/omapdrm/tcm.h b/drivers/gpu/drm/omapdrm/tcm.h index a8d5ce47686f..ef7df7d6fc84 100644 --- a/drivers/gpu/drm/omapdrm/tcm.h +++ b/drivers/gpu/drm/omapdrm/tcm.h @@ -61,18 +61,17 @@ struct tcm { unsigned int y_offset; /* offset to use for y coordinates */ - /* 'pvt' structure shall contain any tcm details (attr) along with - linked list of allocated areas and mutex for mutually exclusive access - to the list. It may also contain copies of width and height to notice - any changes to the publicly available width and height fields. */ - void *pvt; + spinlock_t lock; + unsigned long *bitmap; + size_t map_size; /* function table */ - s32 (*reserve_2d)(struct tcm *tcm, u16 height, u16 width, u8 align, + s32 (*reserve_2d)(struct tcm *tcm, u16 height, u16 width, u16 align, + int16_t offset, uint16_t slot_bytes, struct tcm_area *area); s32 (*reserve_1d)(struct tcm *tcm, u32 slots, struct tcm_area *area); - s32 (*free) (struct tcm *tcm, struct tcm_area *area); - void (*deinit) (struct tcm *tcm); + s32 (*free)(struct tcm *tcm, struct tcm_area *area); + void (*deinit)(struct tcm *tcm); }; /*============================================================================= @@ -91,7 +90,7 @@ struct tcm { * */ -struct tcm *sita_init(u16 width, u16 height, struct tcm_pt *attr); +struct tcm *sita_init(u16 width, u16 height); /** @@ -120,6 +119,9 @@ static inline void tcm_deinit(struct tcm *tcm) * all values may be supported by the container manager, * but it must support 0 (1), 32 and 64. * 0 value is equivalent to 1. + * @param offset Offset requirement, in bytes. This is the offset + * from a 4KiB aligned virtual address. + * @param slot_bytes Width of slot in bytes * @param area Pointer to where the reserved area should be stored. * * @return 0 on success. Non-0 error code on failure. Also, @@ -129,7 +131,8 @@ static inline void tcm_deinit(struct tcm *tcm) * allocation. */ static inline s32 tcm_reserve_2d(struct tcm *tcm, u16 width, u16 height, - u16 align, struct tcm_area *area) + u16 align, int16_t offset, uint16_t slot_bytes, + struct tcm_area *area) { /* perform rudimentary error checking */ s32 res = tcm == NULL ? -ENODEV : @@ -140,7 +143,8 @@ static inline s32 tcm_reserve_2d(struct tcm *tcm, u16 width, u16 height, if (!res) { area->is2d = true; - res = tcm->reserve_2d(tcm, height, width, align, area); + res = tcm->reserve_2d(tcm, height, width, align, offset, + slot_bytes, area); area->tcm = res ? NULL : tcm; } |