cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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push.h (15875B)


      1/*
      2 * Copyright 2019 Red Hat Inc.
      3 *
      4 * Permission is hereby granted, free of charge, to any person obtaining a
      5 * copy of this software and associated documentation files (the "Software"),
      6 * to deal in the Software without restriction, including without limitation
      7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
      8 * and/or sell copies of the Software, and to permit persons to whom the
      9 * Software is furnished to do so, subject to the following conditions:
     10 *
     11 * The above copyright notice and this permission notice shall be included in
     12 * all copies or substantial portions of the Software.
     13 *
     14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
     18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
     19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
     20 * OTHER DEALINGS IN THE SOFTWARE.
     21 */
     22#ifndef __NVIF_PUSH_H__
     23#define __NVIF_PUSH_H__
     24#include <nvif/mem.h>
     25#include <nvif/printf.h>
     26
     27#include <nvhw/drf.h>
     28
     29struct nvif_push {
     30	int (*wait)(struct nvif_push *push, u32 size);
     31	void (*kick)(struct nvif_push *push);
     32
     33	struct nvif_mem mem;
     34
     35	u32 *bgn;
     36	u32 *cur;
     37	u32 *seg;
     38	u32 *end;
     39};
     40
     41static inline __must_check int
     42PUSH_WAIT(struct nvif_push *push, u32 size)
     43{
     44	if (push->cur + size >= push->end) {
     45		int ret = push->wait(push, size);
     46		if (ret)
     47			return ret;
     48	}
     49#ifdef CONFIG_NOUVEAU_DEBUG_PUSH
     50	push->seg = push->cur + size;
     51#endif
     52	return 0;
     53}
     54
     55static inline int
     56PUSH_KICK(struct nvif_push *push)
     57{
     58	push->kick(push);
     59	return 0;
     60}
     61
     62#ifdef CONFIG_NOUVEAU_DEBUG_PUSH
     63#define PUSH_PRINTF(p,f,a...) do {                              \
     64	struct nvif_push *_ppp = (p);                           \
     65	u32 __o = _ppp->cur - (u32 *)_ppp->mem.object.map.ptr;  \
     66	NVIF_DEBUG(&_ppp->mem.object, "%08x: "f, __o * 4, ##a); \
     67	(void)__o;                                              \
     68} while(0)
     69#define PUSH_ASSERT_ON(a,b) WARN((a), b)
     70#else
     71#define PUSH_PRINTF(p,f,a...)
     72#define PUSH_ASSERT_ON(a, b)
     73#endif
     74
     75#define PUSH_ASSERT(a,b) do {                                             \
     76	static_assert(                                                    \
     77		__builtin_choose_expr(__builtin_constant_p(a), (a), 1), b \
     78	);                                                                \
     79	PUSH_ASSERT_ON(!(a), b);                                          \
     80} while(0)
     81
     82#define PUSH_DATA__(p,d,f,a...) do {                       \
     83	struct nvif_push *_p = (p);                        \
     84	u32 _d = (d);                                      \
     85	PUSH_ASSERT(_p->cur < _p->seg, "segment overrun"); \
     86	PUSH_ASSERT(_p->cur < _p->end, "pushbuf overrun"); \
     87	PUSH_PRINTF(_p, "%08x"f, _d, ##a);                 \
     88	*_p->cur++ = _d;                                   \
     89} while(0)
     90
     91#define PUSH_DATA_(X,p,m,i0,i1,d,s,f,a...) PUSH_DATA__((p), (d), "-> "#m f, ##a)
     92#define PUSH_DATA(p,d) PUSH_DATA__((p), (d), " data - %s", __func__)
     93
     94//XXX: error-check this against *real* pushbuffer end?
     95#define PUSH_RSVD(p,d) do {          \
     96	struct nvif_push *__p = (p); \
     97	__p->seg++;                  \
     98	__p->end++;                  \
     99	d;                           \
    100} while(0)
    101
    102#ifdef CONFIG_NOUVEAU_DEBUG_PUSH
    103#define PUSH_DATAp(X,p,m,i,o,d,s,f,a...) do {                                     \
    104	struct nvif_push *_pp = (p);                                              \
    105	const u32 *_dd = (d);                                                     \
    106	u32 _s = (s), _i = (i?PUSH_##o##_INC);                                    \
    107	if (_s--) {                                                               \
    108		PUSH_DATA_(X, _pp, X##m, i0, i1, *_dd++, 1, "+0x%x", 0);          \
    109		while (_s--) {                                                    \
    110			PUSH_DATA_(X, _pp, X##m, i0, i1, *_dd++, 1, "+0x%x", _i); \
    111			_i += (0?PUSH_##o##_INC);                                 \
    112		}                                                                 \
    113	}                                                                         \
    114} while(0)
    115#else
    116#define PUSH_DATAp(X,p,m,i,o,d,s,f,a...) do {                    \
    117	struct nvif_push *_p = (p);                              \
    118	u32 _s = (s);                                            \
    119	PUSH_ASSERT(_p->cur + _s <= _p->seg, "segment overrun"); \
    120	PUSH_ASSERT(_p->cur + _s <= _p->end, "pushbuf overrun"); \
    121	memcpy(_p->cur, (d), _s << 2);                           \
    122	_p->cur += _s;                                           \
    123} while(0)
    124#endif
    125
    126#define PUSH_1(X,f,ds,n,o,p,s,mA,dA) do {                             \
    127	PUSH_##o##_HDR((p), s, mA, (ds)+(n));                         \
    128	PUSH_##f(X, (p), X##mA, 1, o, (dA), ds, "");                  \
    129} while(0)
    130#define PUSH_2(X,f,ds,n,o,p,s,mB,dB,mA,dA,a...) do {                  \
    131	PUSH_ASSERT((mB) - (mA) == (1?PUSH_##o##_INC), "mthd1");      \
    132	PUSH_1(X, DATA_, 1, (ds) + (n), o, (p), s, X##mA, (dA), ##a); \
    133	PUSH_##f(X, (p), X##mB, 0, o, (dB), ds, "");                  \
    134} while(0)
    135#define PUSH_3(X,f,ds,n,o,p,s,mB,dB,mA,dA,a...) do {                  \
    136	PUSH_ASSERT((mB) - (mA) == (0?PUSH_##o##_INC), "mthd2");      \
    137	PUSH_2(X, DATA_, 1, (ds) + (n), o, (p), s, X##mA, (dA), ##a); \
    138	PUSH_##f(X, (p), X##mB, 0, o, (dB), ds, "");                  \
    139} while(0)
    140#define PUSH_4(X,f,ds,n,o,p,s,mB,dB,mA,dA,a...) do {                  \
    141	PUSH_ASSERT((mB) - (mA) == (0?PUSH_##o##_INC), "mthd3");      \
    142	PUSH_3(X, DATA_, 1, (ds) + (n), o, (p), s, X##mA, (dA), ##a); \
    143	PUSH_##f(X, (p), X##mB, 0, o, (dB), ds, "");                  \
    144} while(0)
    145#define PUSH_5(X,f,ds,n,o,p,s,mB,dB,mA,dA,a...) do {                  \
    146	PUSH_ASSERT((mB) - (mA) == (0?PUSH_##o##_INC), "mthd4");      \
    147	PUSH_4(X, DATA_, 1, (ds) + (n), o, (p), s, X##mA, (dA), ##a); \
    148	PUSH_##f(X, (p), X##mB, 0, o, (dB), ds, "");                  \
    149} while(0)
    150#define PUSH_6(X,f,ds,n,o,p,s,mB,dB,mA,dA,a...) do {                  \
    151	PUSH_ASSERT((mB) - (mA) == (0?PUSH_##o##_INC), "mthd5");      \
    152	PUSH_5(X, DATA_, 1, (ds) + (n), o, (p), s, X##mA, (dA), ##a); \
    153	PUSH_##f(X, (p), X##mB, 0, o, (dB), ds, "");                  \
    154} while(0)
    155#define PUSH_7(X,f,ds,n,o,p,s,mB,dB,mA,dA,a...) do {                  \
    156	PUSH_ASSERT((mB) - (mA) == (0?PUSH_##o##_INC), "mthd6");      \
    157	PUSH_6(X, DATA_, 1, (ds) + (n), o, (p), s, X##mA, (dA), ##a); \
    158	PUSH_##f(X, (p), X##mB, 0, o, (dB), ds, "");                  \
    159} while(0)
    160#define PUSH_8(X,f,ds,n,o,p,s,mB,dB,mA,dA,a...) do {                  \
    161	PUSH_ASSERT((mB) - (mA) == (0?PUSH_##o##_INC), "mthd7");      \
    162	PUSH_7(X, DATA_, 1, (ds) + (n), o, (p), s, X##mA, (dA), ##a); \
    163	PUSH_##f(X, (p), X##mB, 0, o, (dB), ds, "");                  \
    164} while(0)
    165#define PUSH_9(X,f,ds,n,o,p,s,mB,dB,mA,dA,a...) do {                  \
    166	PUSH_ASSERT((mB) - (mA) == (0?PUSH_##o##_INC), "mthd8");      \
    167	PUSH_8(X, DATA_, 1, (ds) + (n), o, (p), s, X##mA, (dA), ##a); \
    168	PUSH_##f(X, (p), X##mB, 0, o, (dB), ds, "");                  \
    169} while(0)
    170#define PUSH_10(X,f,ds,n,o,p,s,mB,dB,mA,dA,a...) do {                 \
    171	PUSH_ASSERT((mB) - (mA) == (0?PUSH_##o##_INC), "mthd9");      \
    172	PUSH_9(X, DATA_, 1, (ds) + (n), o, (p), s, X##mA, (dA), ##a); \
    173	PUSH_##f(X, (p), X##mB, 0, o, (dB), ds, "");                  \
    174} while(0)
    175
    176#define PUSH_1D(X,o,p,s,mA,dA)                         \
    177	PUSH_1(X, DATA_, 1, 0, o, (p), s, X##mA, (dA))
    178#define PUSH_2D(X,o,p,s,mA,dA,mB,dB)                   \
    179	PUSH_2(X, DATA_, 1, 0, o, (p), s, X##mB, (dB), \
    180					  X##mA, (dA))
    181#define PUSH_3D(X,o,p,s,mA,dA,mB,dB,mC,dC)             \
    182	PUSH_3(X, DATA_, 1, 0, o, (p), s, X##mC, (dC), \
    183					  X##mB, (dB), \
    184					  X##mA, (dA))
    185#define PUSH_4D(X,o,p,s,mA,dA,mB,dB,mC,dC,mD,dD)       \
    186	PUSH_4(X, DATA_, 1, 0, o, (p), s, X##mD, (dD), \
    187					  X##mC, (dC), \
    188					  X##mB, (dB), \
    189					  X##mA, (dA))
    190#define PUSH_5D(X,o,p,s,mA,dA,mB,dB,mC,dC,mD,dD,mE,dE) \
    191	PUSH_5(X, DATA_, 1, 0, o, (p), s, X##mE, (dE), \
    192					  X##mD, (dD), \
    193					  X##mC, (dC), \
    194					  X##mB, (dB), \
    195					  X##mA, (dA))
    196#define PUSH_6D(X,o,p,s,mA,dA,mB,dB,mC,dC,mD,dD,mE,dE,mF,dF) \
    197	PUSH_6(X, DATA_, 1, 0, o, (p), s, X##mF, (dF),       \
    198					  X##mE, (dE),       \
    199					  X##mD, (dD),       \
    200					  X##mC, (dC),       \
    201					  X##mB, (dB),       \
    202					  X##mA, (dA))
    203#define PUSH_7D(X,o,p,s,mA,dA,mB,dB,mC,dC,mD,dD,mE,dE,mF,dF,mG,dG) \
    204	PUSH_7(X, DATA_, 1, 0, o, (p), s, X##mG, (dG),             \
    205					  X##mF, (dF),             \
    206					  X##mE, (dE),             \
    207					  X##mD, (dD),             \
    208					  X##mC, (dC),             \
    209					  X##mB, (dB),             \
    210					  X##mA, (dA))
    211#define PUSH_8D(X,o,p,s,mA,dA,mB,dB,mC,dC,mD,dD,mE,dE,mF,dF,mG,dG,mH,dH) \
    212	PUSH_8(X, DATA_, 1, 0, o, (p), s, X##mH, (dH),                   \
    213					  X##mG, (dG),                   \
    214					  X##mF, (dF),                   \
    215					  X##mE, (dE),                   \
    216					  X##mD, (dD),                   \
    217					  X##mC, (dC),                   \
    218					  X##mB, (dB),                   \
    219					  X##mA, (dA))
    220#define PUSH_9D(X,o,p,s,mA,dA,mB,dB,mC,dC,mD,dD,mE,dE,mF,dF,mG,dG,mH,dH,mI,dI) \
    221	PUSH_9(X, DATA_, 1, 0, o, (p), s, X##mI, (dI),                         \
    222					  X##mH, (dH),                         \
    223					  X##mG, (dG),                         \
    224					  X##mF, (dF),                         \
    225					  X##mE, (dE),                         \
    226					  X##mD, (dD),                         \
    227					  X##mC, (dC),                         \
    228					  X##mB, (dB),                         \
    229					  X##mA, (dA))
    230#define PUSH_10D(X,o,p,s,mA,dA,mB,dB,mC,dC,mD,dD,mE,dE,mF,dF,mG,dG,mH,dH,mI,dI,mJ,dJ) \
    231	PUSH_10(X, DATA_, 1, 0, o, (p), s, X##mJ, (dJ),                               \
    232					   X##mI, (dI),                               \
    233					   X##mH, (dH),                               \
    234					   X##mG, (dG),                               \
    235					   X##mF, (dF),                               \
    236					   X##mE, (dE),                               \
    237					   X##mD, (dD),                               \
    238					   X##mC, (dC),                               \
    239					   X##mB, (dB),                               \
    240					   X##mA, (dA))
    241
    242#define PUSH_1P(X,o,p,s,mA,dp,ds)                       \
    243	PUSH_1(X, DATAp, ds, 0, o, (p), s, X##mA, (dp))
    244#define PUSH_2P(X,o,p,s,mA,dA,mB,dp,ds)                 \
    245	PUSH_2(X, DATAp, ds, 0, o, (p), s, X##mB, (dp), \
    246					   X##mA, (dA))
    247#define PUSH_3P(X,o,p,s,mA,dA,mB,dB,mC,dp,ds)           \
    248	PUSH_3(X, DATAp, ds, 0, o, (p), s, X##mC, (dp), \
    249					   X##mB, (dB), \
    250					   X##mA, (dA))
    251
    252#define PUSH_(A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,IMPL,...) IMPL
    253#define PUSH(A...) PUSH_(A, PUSH_10P, PUSH_10D,          \
    254			    PUSH_9P , PUSH_9D,           \
    255			    PUSH_8P , PUSH_8D,           \
    256			    PUSH_7P , PUSH_7D,           \
    257			    PUSH_6P , PUSH_6D,           \
    258			    PUSH_5P , PUSH_5D,           \
    259			    PUSH_4P , PUSH_4D,           \
    260			    PUSH_3P , PUSH_3D,           \
    261			    PUSH_2P , PUSH_2D,           \
    262			    PUSH_1P , PUSH_1D)(, ##A)
    263
    264#define PUSH_NVIM(p,c,m,d) do {             \
    265	struct nvif_push *__p = (p);        \
    266	u32 __d = (d);                      \
    267	PUSH_IMMD_HDR(__p, c, m, __d);      \
    268	__p->cur--;                         \
    269	PUSH_PRINTF(__p, "%08x-> "#m, __d); \
    270	__p->cur++;                         \
    271} while(0)
    272#define PUSH_NVSQ(A...) PUSH(MTHD, ##A)
    273#define PUSH_NV1I(A...) PUSH(1INC, ##A)
    274#define PUSH_NVNI(A...) PUSH(NINC, ##A)
    275
    276
    277#define PUSH_NV_1(X,o,p,c,mA,d...) \
    278       PUSH_##o(p,c,c##_##mA,d)
    279#define PUSH_NV_2(X,o,p,c,mA,dA,mB,d...) \
    280       PUSH_##o(p,c,c##_##mA,dA,         \
    281		    c##_##mB,d)
    282#define PUSH_NV_3(X,o,p,c,mA,dA,mB,dB,mC,d...) \
    283       PUSH_##o(p,c,c##_##mA,dA,               \
    284		    c##_##mB,dB,               \
    285		    c##_##mC,d)
    286#define PUSH_NV_4(X,o,p,c,mA,dA,mB,dB,mC,dC,mD,d...) \
    287       PUSH_##o(p,c,c##_##mA,dA,                     \
    288		    c##_##mB,dB,                     \
    289		    c##_##mC,dC,                     \
    290		    c##_##mD,d)
    291#define PUSH_NV_5(X,o,p,c,mA,dA,mB,dB,mC,dC,mD,dD,mE,d...) \
    292       PUSH_##o(p,c,c##_##mA,dA,                           \
    293		    c##_##mB,dB,                           \
    294		    c##_##mC,dC,                           \
    295		    c##_##mD,dD,                           \
    296		    c##_##mE,d)
    297#define PUSH_NV_6(X,o,p,c,mA,dA,mB,dB,mC,dC,mD,dD,mE,dE,mF,d...) \
    298       PUSH_##o(p,c,c##_##mA,dA,                                 \
    299		    c##_##mB,dB,                                 \
    300		    c##_##mC,dC,                                 \
    301		    c##_##mD,dD,                                 \
    302		    c##_##mE,dE,                                 \
    303		    c##_##mF,d)
    304#define PUSH_NV_7(X,o,p,c,mA,dA,mB,dB,mC,dC,mD,dD,mE,dE,mF,dF,mG,d...) \
    305       PUSH_##o(p,c,c##_##mA,dA,                                       \
    306		    c##_##mB,dB,                                       \
    307		    c##_##mC,dC,                                       \
    308		    c##_##mD,dD,                                       \
    309		    c##_##mE,dE,                                       \
    310		    c##_##mF,dF,                                       \
    311		    c##_##mG,d)
    312#define PUSH_NV_8(X,o,p,c,mA,dA,mB,dB,mC,dC,mD,dD,mE,dE,mF,dF,mG,dG,mH,d...) \
    313       PUSH_##o(p,c,c##_##mA,dA,                                             \
    314		    c##_##mB,dB,                                             \
    315		    c##_##mC,dC,                                             \
    316		    c##_##mD,dD,                                             \
    317		    c##_##mE,dE,                                             \
    318		    c##_##mF,dF,                                             \
    319		    c##_##mG,dG,                                             \
    320		    c##_##mH,d)
    321#define PUSH_NV_9(X,o,p,c,mA,dA,mB,dB,mC,dC,mD,dD,mE,dE,mF,dF,mG,dG,mH,dH,mI,d...) \
    322       PUSH_##o(p,c,c##_##mA,dA,                                                   \
    323		    c##_##mB,dB,                                                   \
    324		    c##_##mC,dC,                                                   \
    325		    c##_##mD,dD,                                                   \
    326		    c##_##mE,dE,                                                   \
    327		    c##_##mF,dF,                                                   \
    328		    c##_##mG,dG,                                                   \
    329		    c##_##mH,dH,                                                   \
    330		    c##_##mI,d)
    331#define PUSH_NV_10(X,o,p,c,mA,dA,mB,dB,mC,dC,mD,dD,mE,dE,mF,dF,mG,dG,mH,dH,mI,dI,mJ,d...) \
    332       PUSH_##o(p,c,c##_##mA,dA,                                                          \
    333		    c##_##mB,dB,                                                          \
    334		    c##_##mC,dC,                                                          \
    335		    c##_##mD,dD,                                                          \
    336		    c##_##mE,dE,                                                          \
    337		    c##_##mF,dF,                                                          \
    338		    c##_##mG,dG,                                                          \
    339		    c##_##mH,dH,                                                          \
    340		    c##_##mI,dI,                                                          \
    341		    c##_##mJ,d)
    342
    343#define PUSH_NV_(A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,IMPL,...) IMPL
    344#define PUSH_NV(A...) PUSH_NV_(A, PUSH_NV_10, PUSH_NV_10,       \
    345				  PUSH_NV_9 , PUSH_NV_9,        \
    346				  PUSH_NV_8 , PUSH_NV_8,        \
    347				  PUSH_NV_7 , PUSH_NV_7,        \
    348				  PUSH_NV_6 , PUSH_NV_6,        \
    349				  PUSH_NV_5 , PUSH_NV_5,        \
    350				  PUSH_NV_4 , PUSH_NV_4,        \
    351				  PUSH_NV_3 , PUSH_NV_3,        \
    352				  PUSH_NV_2 , PUSH_NV_2,        \
    353				  PUSH_NV_1 , PUSH_NV_1)(, ##A)
    354
    355#define PUSH_IMMD(A...) PUSH_NV(NVIM, ##A)
    356#define PUSH_MTHD(A...) PUSH_NV(NVSQ, ##A)
    357#define PUSH_1INC(A...) PUSH_NV(NV1I, ##A)
    358#define PUSH_NINC(A...) PUSH_NV(NVNI, ##A)
    359#endif