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 #define DRM_READ8(map, offset) \ 9 *(volatile u_int8_t *)(((vm_offset_t)(map)->handle) + \ 10 (vm_offset_t)(offset)) 11 #define DRM_READ16(map, offset) \ 12 le16toh(*(volatile u_int16_t *)(((vm_offset_t)(map)->handle) + \ 13 (vm_offset_t)(offset))) 14 #define DRM_READ32(map, offset) \ 15 le32toh(*(volatile u_int32_t *)(((vm_offset_t)(map)->handle) + \ 16 (vm_offset_t)(offset))) 17 #define DRM_READ64(map, offset) \ 18 le64toh(*(volatile u_int64_t *)(((vm_offset_t)(map)->handle) + \ 19 (vm_offset_t)(offset))) 20 #define DRM_WRITE8(map, offset, val) \ 21 *(volatile u_int8_t *)(((vm_offset_t)(map)->handle) + \ 22 (vm_offset_t)(offset)) = val 23 #define DRM_WRITE16(map, offset, val) \ 24 *(volatile u_int16_t *)(((vm_offset_t)(map)->handle) + \ 25 (vm_offset_t)(offset)) = htole16(val) 26 27 #define DRM_WRITE32(map, offset, val) \ 28 *(volatile u_int32_t *)(((vm_offset_t)(map)->handle) + \ 29 (vm_offset_t)(offset)) = htole32(val) 30 31 #define DRM_WRITE64(map, offset, val) \ 32 *(volatile u_int64_t *)(((vm_offset_t)(map)->handle) + \ 33 (vm_offset_t)(offset)) = htole64(val) 34 35 36 #if _BYTE_ORDER == _BIG_ENDIAN 37 #define __BIG_ENDIAN 4321 38 #else 39 #define __LITTLE_ENDIAN 1234 40 #endif 41 42 #ifdef __LP64__ 43 #define BITS_PER_LONG 64 44 #else 45 #define BITS_PER_LONG 32 46 #endif 47 48 #define cpu_to_le16(x) htole16(x) 49 #define le16_to_cpu(x) le16toh(x) 50 #define cpu_to_le32(x) htole32(x) 51 #define le32_to_cpu(x) le32toh(x) 52 53 #define cpu_to_be16(x) htobe16(x) 54 #define be16_to_cpu(x) be16toh(x) 55 #define cpu_to_be32(x) htobe32(x) 56 #define be32_to_cpu(x) be32toh(x) 57 #define be32_to_cpup(x) be32toh(*x) 58 59 #define unlikely(x) __builtin_expect(!!(x), 0) 60 #define likely(x) __builtin_expect(!!(x), 1) 61 62 #define DRM_HZ hz 63 #define DRM_UDELAY(udelay) DELAY(udelay) 64 #define DRM_MDELAY(msecs) do { int loops = (msecs); \ 65 while (loops--) DELAY(1000); \ 66 } while (0) 67 #define DRM_TIME_SLICE (hz/20) /* Time slice for GLXContexts */ 68 69 #define do_div(a, b) ((a) /= (b)) 70 #define lower_32_bits(n) ((u32)(n)) 71 72 #define memset_io(a, b, c) memset((a), (b), (c)) 73 #define memcpy_fromio(a, b, c) memcpy((a), (b), (c)) 74 #define memcpy_toio(a, b, c) memcpy((a), (b), (c)) 75 76 /* XXXKIB what is the right code for the FreeBSD ? */ 77 /* kib@ used ENXIO here -- dumbbell@ */ 78 #define EREMOTEIO EIO 79 80 #define KTR_DRM KTR_DEV 81 #define KTR_DRM_REG KTR_SPARE3 82 83 #define hweight32(i) bitcount32(i) 84 85 static inline unsigned long 86 roundup_pow_of_two(unsigned long x) 87 { 88 return (1UL << flsl(x - 1)); 89 } 90 91 /** 92 * ror32 - rotate a 32-bit value right 93 * @word: value to rotate 94 * @shift: bits to roll 95 * 96 * Source: include/linux/bitops.h 97 */ 98 static inline uint32_t ror32(uint32_t word, unsigned int shift) 99 { 100 return (word >> shift) | (word << (32 - shift)); 101 } 102 103 #define IS_ALIGNED(x, y) (((x) & ((y) - 1)) == 0) 104 #define get_unaligned(ptr) \ 105 ({ __typeof__(*(ptr)) __tmp; \ 106 memcpy(&__tmp, (ptr), sizeof(*(ptr))); __tmp; }) 107 108 #if _BYTE_ORDER == _LITTLE_ENDIAN 109 /* Taken from linux/include/linux/unaligned/le_struct.h. */ 110 struct __una_u32 { u32 x; } __packed; 111 112 static inline u32 __get_unaligned_cpu32(const void *p) 113 { 114 const struct __una_u32 *ptr = (const struct __una_u32 *)p; 115 return ptr->x; 116 } 117 118 static inline u32 get_unaligned_le32(const void *p) 119 { 120 return __get_unaligned_cpu32((const u8 *)p); 121 } 122 #else 123 /* Taken from linux/include/linux/unaligned/le_byteshift.h. */ 124 static inline u32 __get_unaligned_le32(const u8 *p) 125 { 126 return p[0] | p[1] << 8 | p[2] << 16 | p[3] << 24; 127 } 128 129 static inline u32 get_unaligned_le32(const void *p) 130 { 131 return __get_unaligned_le32((const u8 *)p); 132 } 133 #endif 134 135 #define KIB_NOTYET() \ 136 do { \ 137 if (drm_debug && drm_notyet_flag) \ 138 kprintf("NOTYET: %s at %s:%d\n", __func__, __FILE__, __LINE__); \ 139 } while (0) 140