84 lines · c
1/*2 * Copyright (C) 2010 Francisco Jerez.3 * All Rights Reserved.4 *5 * Permission is hereby granted, free of charge, to any person obtaining6 * a copy of this software and associated documentation files (the7 * "Software"), to deal in the Software without restriction, including8 * without limitation the rights to use, copy, modify, merge, publish,9 * distribute, sublicense, and/or sell copies of the Software, and to10 * permit persons to whom the Software is furnished to do so, subject to11 * the following conditions:12 *13 * The above copyright notice and this permission notice (including the14 * next paragraph) shall be included in all copies or substantial15 * portions of the Software.16 *17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,18 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.20 * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE21 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION22 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION23 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.24 *25 */26#include <subdev/fb/regsnv04.h>27 28#define NV04_PFB_DEBUG_0 0x0010008029# define NV04_PFB_DEBUG_0_PAGE_MODE 0x0000000130# define NV04_PFB_DEBUG_0_REFRESH_OFF 0x0000001031# define NV04_PFB_DEBUG_0_REFRESH_COUNTX64 0x00003f0032# define NV04_PFB_DEBUG_0_REFRESH_SLOW_CLK 0x0000400033# define NV04_PFB_DEBUG_0_SAFE_MODE 0x0000800034# define NV04_PFB_DEBUG_0_ALOM_ENABLE 0x0001000035# define NV04_PFB_DEBUG_0_CASOE 0x0010000036# define NV04_PFB_DEBUG_0_CKE_INVERT 0x1000000037# define NV04_PFB_DEBUG_0_REFINC 0x2000000038# define NV04_PFB_DEBUG_0_SAVE_POWER_OFF 0x4000000039#define NV04_PFB_CFG0 0x0010020040# define NV04_PFB_CFG0_SCRAMBLE 0x2000000041#define NV04_PFB_CFG1 0x0010020442#define NV04_PFB_SCRAMBLE(i) (0x00100400 + 4 * (i))43 44#define NV10_PFB_REFCTRL 0x0010021045# define NV10_PFB_REFCTRL_VALID_1 (1 << 31)46 47static inline struct io_mapping *48fbmem_init(struct nvkm_device *dev)49{50 return io_mapping_create_wc(dev->func->resource_addr(dev, 1),51 dev->func->resource_size(dev, 1));52}53 54static inline void55fbmem_fini(struct io_mapping *fb)56{57 io_mapping_free(fb);58}59 60static inline u3261fbmem_peek(struct io_mapping *fb, u32 off)62{63 u8 __iomem *p = io_mapping_map_atomic_wc(fb, off & PAGE_MASK);64 u32 val = ioread32(p + (off & ~PAGE_MASK));65 io_mapping_unmap_atomic(p);66 return val;67}68 69static inline void70fbmem_poke(struct io_mapping *fb, u32 off, u32 val)71{72 u8 __iomem *p = io_mapping_map_atomic_wc(fb, off & PAGE_MASK);73 iowrite32(val, p + (off & ~PAGE_MASK));74 wmb();75 io_mapping_unmap_atomic(p);76}77 78static inline bool79fbmem_readback(struct io_mapping *fb, u32 off, u32 val)80{81 fbmem_poke(fb, off, val);82 return val == fbmem_peek(fb, off);83}84