diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nouveau_hwsq.h')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nouveau_hwsq.h | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_hwsq.h b/drivers/gpu/drm/nouveau/nouveau_hwsq.h new file mode 100644 index 0000000..6976875 --- /dev/null +++ b/drivers/gpu/drm/nouveau/nouveau_hwsq.h @@ -0,0 +1,115 @@ +/* + * Copyright 2010 Red Hat Inc. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + * + * Authors: Ben Skeggs + */ + +#ifndef __NOUVEAU_HWSQ_H__ +#define __NOUVEAU_HWSQ_H__ + +struct hwsq_ucode { + u8 data[0x200]; + union { + u8 *u08; + u16 *u16; + u32 *u32; + } ptr; + u16 len; + + u32 reg; + u32 val; +}; + +static inline void +hwsq_init(struct hwsq_ucode *hwsq) +{ + hwsq->ptr.u08 = hwsq->data; + hwsq->reg = 0xffffffff; + hwsq->val = 0xffffffff; +} + +static inline void +hwsq_fini(struct hwsq_ucode *hwsq) +{ + do { + *hwsq->ptr.u08++ = 0x7f; + hwsq->len = hwsq->ptr.u08 - hwsq->data; + } while (hwsq->len & 3); + hwsq->ptr.u08 = hwsq->data; +} + +static inline void +hwsq_usec(struct hwsq_ucode *hwsq, u8 usec) +{ + u32 shift = 0; + while (usec & ~3) { + usec >>= 2; + shift++; + } + + *hwsq->ptr.u08++ = (shift << 2) | usec; +} + +static inline void +hwsq_setf(struct hwsq_ucode *hwsq, u8 flag, int val) +{ + flag += 0x80; + if (val >= 0) + flag += 0x20; + if (val >= 1) + flag += 0x20; + *hwsq->ptr.u08++ = flag; +} + +static inline void +hwsq_op5f(struct hwsq_ucode *hwsq, u8 v0, u8 v1) +{ + *hwsq->ptr.u08++ = 0x5f; + *hwsq->ptr.u08++ = v0; + *hwsq->ptr.u08++ = v1; +} + +static inline void +hwsq_wr32(struct hwsq_ucode *hwsq, u32 reg, u32 val) +{ + if (val != hwsq->val) { + if ((val & 0xffff0000) == (hwsq->val & 0xffff0000)) { + *hwsq->ptr.u08++ = 0x42; + *hwsq->ptr.u16++ = (val & 0x0000ffff); + } else { + *hwsq->ptr.u08++ = 0xe2; + *hwsq->ptr.u32++ = val; + } + + hwsq->val = val; + } + + if ((reg & 0xffff0000) == (hwsq->reg & 0xffff0000)) { + *hwsq->ptr.u08++ = 0x40; + *hwsq->ptr.u16++ = (reg & 0x0000ffff); + } else { + *hwsq->ptr.u08++ = 0xe0; + *hwsq->ptr.u32++ = reg; + } + hwsq->reg = reg; +} + +#endif |