Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
64 lines
1.8 KiB
C
64 lines
1.8 KiB
C
/* SPDX-License-Identifier: MIT */
|
|
#ifndef __NV50_TILE_H__
|
|
#define __NV50_TILE_H__
|
|
|
|
#include <linux/types.h>
|
|
#include <linux/math.h>
|
|
|
|
/*
|
|
* Tiling parameters for NV50+.
|
|
* GOB = Group of bytes, the main unit for tiling blocks.
|
|
* Tiling blocks are a power of 2 number of GOB.
|
|
* All GOBs and blocks have the same width: 64 bytes (so 16 pixels in 32bits).
|
|
* tile_mode is the log2 of the number of GOB per block.
|
|
*/
|
|
|
|
#define NV_TILE_GOB_HEIGHT_TESLA 4 /* 4 x 64 bytes = 256 bytes for a GOB on Tesla*/
|
|
#define NV_TILE_GOB_HEIGHT 8 /* 8 x 64 bytes = 512 bytes for a GOB on Fermi and later */
|
|
#define NV_TILE_GOB_WIDTH_BYTES 64
|
|
|
|
/* Number of blocks to cover the width of the framebuffer */
|
|
static inline u32 nouveau_get_width_in_blocks(u32 stride)
|
|
{
|
|
return DIV_ROUND_UP(stride, NV_TILE_GOB_WIDTH_BYTES);
|
|
}
|
|
|
|
/* Return the height in pixel of one GOB */
|
|
static inline u32 nouveau_get_gob_height(u16 family)
|
|
{
|
|
if (family == NV_DEVICE_INFO_V0_TESLA)
|
|
return NV_TILE_GOB_HEIGHT_TESLA;
|
|
else
|
|
return NV_TILE_GOB_HEIGHT;
|
|
}
|
|
|
|
/* Number of blocks to cover the heigth of the framebuffer */
|
|
static inline u32 nouveau_get_height_in_blocks(u32 height, u32 gobs_in_block, u16 family)
|
|
{
|
|
return DIV_ROUND_UP(height, nouveau_get_gob_height(family) * gobs_in_block);
|
|
}
|
|
|
|
/* Return the GOB size in bytes */
|
|
static inline u32 nouveau_get_gob_size(u16 family)
|
|
{
|
|
return nouveau_get_gob_height(family) * NV_TILE_GOB_WIDTH_BYTES;
|
|
}
|
|
|
|
/* Return the number of GOB in a block */
|
|
static inline int nouveau_get_gobs_in_block(u32 tile_mode, u16 chipset)
|
|
{
|
|
if (chipset >= 0xc0)
|
|
return 1 << (tile_mode >> 4);
|
|
return 1 << tile_mode;
|
|
}
|
|
|
|
/* Return true if tile_mode is invalid */
|
|
static inline bool nouveau_check_tile_mode(u32 tile_mode, u16 chipset)
|
|
{
|
|
if (chipset >= 0xc0)
|
|
return (tile_mode & 0xfffff0f);
|
|
return (tile_mode & 0xfffffff0);
|
|
}
|
|
|
|
#endif
|