1 /** 2 * \file drm_os_freebsd.h 3 * OS abstraction macros. 4 * 5 * $FreeBSD: head/sys/dev/drm2/drm_os_freebsd.h 254858 2013-08-25 14:27:14Z dumbbell $ 6 */ 7 8 #include <sys/endian.h> 9 10 #define DRM_READ8(map, offset) \ 11 *(volatile u_int8_t *)(((vm_offset_t)(map)->handle) + \ 12 (vm_offset_t)(offset)) 13 #define DRM_READ16(map, offset) \ 14 le16toh(*(volatile u_int16_t *)(((vm_offset_t)(map)->handle) + \ 15 (vm_offset_t)(offset))) 16 #define DRM_READ32(map, offset) \ 17 le32toh(*(volatile u_int32_t *)(((vm_offset_t)(map)->handle) + \ 18 (vm_offset_t)(offset))) 19 #define DRM_READ64(map, offset) \ 20 le64toh(*(volatile u_int64_t *)(((vm_offset_t)(map)->handle) + \ 21 (vm_offset_t)(offset))) 22 #define DRM_WRITE8(map, offset, val) \ 23 *(volatile u_int8_t *)(((vm_offset_t)(map)->handle) + \ 24 (vm_offset_t)(offset)) = val 25 #define DRM_WRITE16(map, offset, val) \ 26 *(volatile u_int16_t *)(((vm_offset_t)(map)->handle) + \ 27 (vm_offset_t)(offset)) = htole16(val) 28 29 #define DRM_WRITE32(map, offset, val) \ 30 *(volatile u_int32_t *)(((vm_offset_t)(map)->handle) + \ 31 (vm_offset_t)(offset)) = htole32(val) 32 33 #define DRM_WRITE64(map, offset, val) \ 34 *(volatile u_int64_t *)(((vm_offset_t)(map)->handle) + \ 35 (vm_offset_t)(offset)) = htole64(val) 36 37 38 #if _BYTE_ORDER == _BIG_ENDIAN 39 #define __BIG_ENDIAN 4321 40 #else 41 #define __LITTLE_ENDIAN 1234 42 #endif 43 44 #ifdef __LP64__ 45 #define BITS_PER_LONG 64 46 #else 47 #define BITS_PER_LONG 32 48 #endif 49 50 #define cpu_to_le16(x) htole16(x) 51 #define le16_to_cpu(x) le16toh(x) 52 #define cpu_to_le32(x) htole32(x) 53 #define le32_to_cpu(x) le32toh(x) 54 55 #define cpu_to_be16(x) htobe16(x) 56 #define be16_to_cpu(x) be16toh(x) 57 #define cpu_to_be32(x) htobe32(x) 58 #define be32_to_cpu(x) be32toh(x) 59 #define be32_to_cpup(x) be32toh(*x) 60 61 #define unlikely(x) __builtin_expect(!!(x), 0) 62 #define likely(x) __builtin_expect(!!(x), 1) 63 64 #define DRM_HZ hz 65 #define DRM_UDELAY(udelay) DELAY(udelay) 66 #define DRM_MDELAY(msecs) do { int loops = (msecs); \ 67 while (loops--) DELAY(1000); \ 68 } while (0) 69 #define DRM_TIME_SLICE (hz/20) /* Time slice for GLXContexts */ 70 71 #define lower_32_bits(n) ((u32)(n)) 72 73 #define memset_io(a, b, c) memset((a), (b), (c)) 74 #define memcpy_fromio(a, b, c) memcpy((a), (b), (c)) 75 #define memcpy_toio(a, b, c) memcpy((a), (b), (c)) 76 77 /* XXXKIB what is the right code for the FreeBSD ? */ 78 /* kib@ used ENXIO here -- dumbbell@ */ 79 #define EREMOTEIO EIO 80 81 #define KTR_DRM KTR_DEV 82 #define KTR_DRM_REG KTR_SPARE3 83 84 #define hweight32(i) bitcount32(i) 85 86 /** 87 * ror32 - rotate a 32-bit value right 88 * @word: value to rotate 89 * @shift: bits to roll 90 * 91 * Source: include/linux/bitops.h 92 */ 93 static inline uint32_t ror32(uint32_t word, unsigned int shift) 94 { 95 return (word >> shift) | (word << (32 - shift)); 96 } 97 98 #define IS_ALIGNED(x, y) (((x) & ((y) - 1)) == 0) 99 #define get_unaligned(ptr) \ 100 ({ __typeof__(*(ptr)) __tmp; \ 101 memcpy(&__tmp, (ptr), sizeof(*(ptr))); __tmp; }) 102 103 #if _BYTE_ORDER == _LITTLE_ENDIAN 104 /* Taken from linux/include/linux/unaligned/le_struct.h. */ 105 struct __una_u32 { u32 x; } __packed; 106 107 static inline u32 __get_unaligned_cpu32(const void *p) 108 { 109 const struct __una_u32 *ptr = (const struct __una_u32 *)p; 110 return ptr->x; 111 } 112 113 static inline u32 get_unaligned_le32(const void *p) 114 { 115 return __get_unaligned_cpu32((const u8 *)p); 116 } 117 #else 118 /* Taken from linux/include/linux/unaligned/le_byteshift.h. */ 119 static inline u32 __get_unaligned_le32(const u8 *p) 120 { 121 return p[0] | p[1] << 8 | p[2] << 16 | p[3] << 24; 122 } 123 124 static inline u32 get_unaligned_le32(const void *p) 125 { 126 return __get_unaligned_le32((const u8 *)p); 127 } 128 #endif 129 130 #define KIB_NOTYET() \ 131 do { \ 132 if (drm_debug && drm_notyet_flag) \ 133 kprintf("NOTYET: %s at %s:%d\n", __func__, __FILE__, __LINE__); \ 134 } while (0) 135