[mirror_ubuntu-bionic-kernel.git] / drivers / gpu / drm / nouveau / nvkm / subdev / fb / ramnv49.c

/*
 * Copyright 2013 Red Hat Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 *
 * Authors: Ben Skeggs
 */
#include "ramnv40.h"

int
nv49_ram_new(struct nvkm_fb *fb, struct nvkm_ram **pram)
{
	struct nvkm_device *device = fb->subdev.device;
	u32  size = nvkm_rd32(device, 0x10020c) & 0xff000000;
	u32  tags = nvkm_rd32(device, 0x100320);
	u32 fb914 = nvkm_rd32(device, 0x100914);
	enum nvkm_ram_type type = NVKM_RAM_TYPE_UNKNOWN;
	int ret;

	switch (fb914 & 0x00000003) {
	case 0x00000000: type = NVKM_RAM_TYPE_DDR1 ; break;
	case 0x00000001: type = NVKM_RAM_TYPE_DDR2 ; break;
	case 0x00000002: type = NVKM_RAM_TYPE_GDDR3; break;
	case 0x00000003: break;
	}

	ret = nv40_ram_new_(fb, type, size, tags, pram);
	if (ret)
		return ret;

	(*pram)->parts = (nvkm_rd32(device, 0x100200) & 0x00000003) + 1;
	return 0;
}
Commit	Line	Data
dceef5d8 BS	1	/*
	2	* Copyright 2013 Red Hat Inc.
	3	*
	4	* Permission is hereby granted, free of charge, to any person obtaining a
	5	* copy of this software and associated documentation files (the "Software"),
	6	* to deal in the Software without restriction, including without limitation
	7	* the rights to use, copy, modify, merge, publish, distribute, sublicense,
	8	* and/or sell copies of the Software, and to permit persons to whom the
	9	* Software is furnished to do so, subject to the following conditions:
	10	*
	11	* The above copyright notice and this permission notice shall be included in
	12	* all copies or substantial portions of the Software.
	13	*
	14	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	15	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	16	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	17	* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
	18	* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
	19	* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
	20	* OTHER DEALINGS IN THE SOFTWARE.
	21	*
	22	* Authors: Ben Skeggs
	23	*/
d36a99d2	24	#include "ramnv40.h"
dceef5d8	25
d36a99d2 BS	26	int
d36a99d2 BS	27	nv49_ram_new(struct nvkm_fb fb, struct nvkm_ram *pram)
dceef5d8	28	{
6758745b	29	struct nvkm_device *device = fb->subdev.device;
d36a99d2 BS	30	u32 size = nvkm_rd32(device, 0x10020c) & 0xff000000;
d36a99d2 BS	31	u32 tags = nvkm_rd32(device, 0x100320);
6758745b	32	u32 fb914 = nvkm_rd32(device, 0x100914);
d36a99d2	33	enum nvkm_ram_type type = NVKM_RAM_TYPE_UNKNOWN;
dceef5d8 BS	34	int ret;
dceef5d8 BS	35
b1e4553c	36	switch (fb914 & 0x00000003) {
d36a99d2 BS	37	case 0x00000000: type = NVKM_RAM_TYPE_DDR1 ; break;
	38	case 0x00000001: type = NVKM_RAM_TYPE_DDR2 ; break;
	39	case 0x00000002: type = NVKM_RAM_TYPE_GDDR3; break;
dceef5d8 BS	40	case 0x00000003: break;
	41	}
	42
d36a99d2 BS	43	ret = nv40_ram_new_(fb, type, size, tags, pram);
	44	if (ret)
	45	return ret;
	46
	47	(*pram)->parts = (nvkm_rd32(device, 0x100200) & 0x00000003) + 1;
dceef5d8 BS	48	return 0;
dceef5d8 BS	49	}