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 <core/device.h> 27 #include <subdev/fb/regsnv04.h> 28 29 #define NV04_PFB_DEBUG_0 0x00100080 30 # define NV04_PFB_DEBUG_0_PAGE_MODE 0x00000001 31 # define NV04_PFB_DEBUG_0_REFRESH_OFF 0x00000010 32 # define NV04_PFB_DEBUG_0_REFRESH_COUNTX64 0x00003f00 33 # define NV04_PFB_DEBUG_0_REFRESH_SLOW_CLK 0x00004000 34 # define NV04_PFB_DEBUG_0_SAFE_MODE 0x00008000 35 # define NV04_PFB_DEBUG_0_ALOM_ENABLE 0x00010000 36 # define NV04_PFB_DEBUG_0_CASOE 0x00100000 37 # define NV04_PFB_DEBUG_0_CKE_INVERT 0x10000000 38 # define NV04_PFB_DEBUG_0_REFINC 0x20000000 39 # define NV04_PFB_DEBUG_0_SAVE_POWER_OFF 0x40000000 40 #define NV04_PFB_CFG0 0x00100200 41 # define NV04_PFB_CFG0_SCRAMBLE 0x20000000 42 #define NV04_PFB_CFG1 0x00100204 43 #define NV04_PFB_SCRAMBLE(i) (0x00100400 + 4 * (i)) 44 45 #define NV10_PFB_REFCTRL 0x00100210 46 # define NV10_PFB_REFCTRL_VALID_1 (1 << 31) 47 48 static inline struct io_mapping * 49 fbmem_init(struct nvkm_device *dev) 50 { 51 return io_mapping_create_wc(nv_device_resource_start(dev, 1), 52 nv_device_resource_len(dev, 1)); 53 } 54 55 static inline void 56 fbmem_fini(struct io_mapping *fb) 57 { 58 io_mapping_free(fb); 59 } 60 61 static inline u32 62 fbmem_peek(struct io_mapping *fb, u32 off) 63 { 64 u8 __iomem *p = io_mapping_map_atomic_wc(fb, off & PAGE_MASK); 65 u32 val = ioread32(p + (off & ~PAGE_MASK)); 66 io_mapping_unmap_atomic(p); 67 return val; 68 } 69 70 static inline void 71 fbmem_poke(struct io_mapping *fb, u32 off, u32 val) 72 { 73 u8 __iomem *p = io_mapping_map_atomic_wc(fb, off & PAGE_MASK); 74 iowrite32(val, p + (off & ~PAGE_MASK)); 75 wmb(); 76 io_mapping_unmap_atomic(p); 77 } 78 79 static inline bool 80 fbmem_readback(struct io_mapping *fb, u32 off, u32 val) 81 { 82 fbmem_poke(fb, off, val); 83 return val == fbmem_peek(fb, off); 84 } 85