mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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116 lines
2.6 KiB
C
116 lines
2.6 KiB
C
/*
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* Copyright 2010 Red Hat Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Authors: Ben Skeggs
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*/
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#ifndef __NOUVEAU_HWSQ_H__
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#define __NOUVEAU_HWSQ_H__
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struct hwsq_ucode {
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u8 data[0x200];
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union {
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u8 *u08;
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u16 *u16;
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u32 *u32;
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} ptr;
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u16 len;
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u32 reg;
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u32 val;
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};
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static inline void
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hwsq_init(struct hwsq_ucode *hwsq)
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{
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hwsq->ptr.u08 = hwsq->data;
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hwsq->reg = 0xffffffff;
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hwsq->val = 0xffffffff;
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}
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static inline void
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hwsq_fini(struct hwsq_ucode *hwsq)
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{
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do {
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*hwsq->ptr.u08++ = 0x7f;
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hwsq->len = hwsq->ptr.u08 - hwsq->data;
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} while (hwsq->len & 3);
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hwsq->ptr.u08 = hwsq->data;
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}
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static inline void
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hwsq_usec(struct hwsq_ucode *hwsq, u8 usec)
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{
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u32 shift = 0;
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while (usec & ~3) {
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usec >>= 2;
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shift++;
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}
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*hwsq->ptr.u08++ = (shift << 2) | usec;
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}
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static inline void
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hwsq_setf(struct hwsq_ucode *hwsq, u8 flag, int val)
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{
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flag += 0x80;
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if (val >= 0)
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flag += 0x20;
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if (val >= 1)
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flag += 0x20;
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*hwsq->ptr.u08++ = flag;
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}
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static inline void
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hwsq_op5f(struct hwsq_ucode *hwsq, u8 v0, u8 v1)
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{
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*hwsq->ptr.u08++ = 0x5f;
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*hwsq->ptr.u08++ = v0;
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*hwsq->ptr.u08++ = v1;
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}
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static inline void
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hwsq_wr32(struct hwsq_ucode *hwsq, u32 reg, u32 val)
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{
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if (val != hwsq->val) {
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if ((val & 0xffff0000) == (hwsq->val & 0xffff0000)) {
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*hwsq->ptr.u08++ = 0x42;
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*hwsq->ptr.u16++ = (val & 0x0000ffff);
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} else {
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*hwsq->ptr.u08++ = 0xe2;
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*hwsq->ptr.u32++ = val;
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}
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hwsq->val = val;
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}
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if ((reg & 0xffff0000) == (hwsq->reg & 0xffff0000)) {
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*hwsq->ptr.u08++ = 0x40;
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*hwsq->ptr.u16++ = (reg & 0x0000ffff);
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} else {
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*hwsq->ptr.u08++ = 0xe0;
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*hwsq->ptr.u32++ = reg;
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}
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hwsq->reg = reg;
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}
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#endif
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