1 /* 2 * Copyright (C) 2010 Francisco Jerez. 3 * All Rights Reserved. 4 * 5 * Permission is hereby granted, free of charge, to any person obtaining 6 * a copy of this software and associated documentation files (the 7 * "Software"), to deal in the Software without restriction, including 8 * without limitation the rights to use, copy, modify, merge, publish, 9 * distribute, sublicense, and/or sell copies of the Software, and to 10 * permit persons to whom the Software is furnished to do so, subject to 11 * the following conditions: 12 * 13 * The above copyright notice and this permission notice (including the 14 * next paragraph) shall be included in all copies or substantial 15 * 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 OF 19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 20 * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE 21 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION 22 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 23 * 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 0x00100080 29 # define NV04_PFB_DEBUG_0_PAGE_MODE 0x00000001 30 # define NV04_PFB_DEBUG_0_REFRESH_OFF 0x00000010 31 # define NV04_PFB_DEBUG_0_REFRESH_COUNTX64 0x00003f00 32 # define NV04_PFB_DEBUG_0_REFRESH_SLOW_CLK 0x00004000 33 # define NV04_PFB_DEBUG_0_SAFE_MODE 0x00008000 34 # define NV04_PFB_DEBUG_0_ALOM_ENABLE 0x00010000 35 # define NV04_PFB_DEBUG_0_CASOE 0x00100000 36 # define NV04_PFB_DEBUG_0_CKE_INVERT 0x10000000 37 # define NV04_PFB_DEBUG_0_REFINC 0x20000000 38 # define NV04_PFB_DEBUG_0_SAVE_POWER_OFF 0x40000000 39 #define NV04_PFB_CFG0 0x00100200 40 # define NV04_PFB_CFG0_SCRAMBLE 0x20000000 41 #define NV04_PFB_CFG1 0x00100204 42 #define NV04_PFB_SCRAMBLE(i) (0x00100400 + 4 * (i)) 43 44 #define NV10_PFB_REFCTRL 0x00100210 45 # define NV10_PFB_REFCTRL_VALID_1 (1 << 31) 46 47 static inline struct io_mapping * 48 fbmem_init(struct nvkm_device *dev) 49 { 50 return io_mapping_create_wc(nv_device_resource_start(dev, 1), 51 nv_device_resource_len(dev, 1)); 52 } 53 54 static inline void 55 fbmem_fini(struct io_mapping *fb) 56 { 57 io_mapping_free(fb); 58 } 59 60 static inline u32 61 fbmem_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 69 static inline void 70 fbmem_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 78 static inline bool 79 fbmem_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