src/mesa/drivers/dri/nouveau/nouveau_fifo.h

   1 /**************************************************************************
   2
   3 Copyright 2006 Stephane Marchesin
   4 All Rights Reserved.
   5
   6 Permission is hereby granted, free of charge, to any person obtaining a
   7 copy of this software and associated documentation files (the "Software"),
   8 to deal in the Software without restriction, including without limitation
   9 on the rights to use, copy, modify, merge, publish, distribute, sub
  10 license, and/or sell copies of the Software, and to permit persons to whom
  11 the Software is furnished to do so, subject to the following conditions:
  12
  13 The above copyright notice and this permission notice (including the next
  14 paragraph) shall be included in all copies or substantial portions of the
  15 Software.
  16
  17 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19 FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  20 ERIC ANHOLT OR SILICON INTEGRATED SYSTEMS CORP BE LIABLE FOR ANY CLAIM,
  21 DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  22 OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  23 USE OR OTHER DEALINGS IN THE SOFTWARE.
  24
  25 **************************************************************************/
  26
  27
  28
  29 #ifndef __NOUVEAU_FIFO_H__
  30 #define __NOUVEAU_FIFO_H__
  31
  32 #include "nouveau_context.h"
  33 #include "nouveau_ctrlreg.h"
  34 #include "nouveau_state_cache.h"
  35
  36 //#define NOUVEAU_RING_DEBUG
  37 //#define NOUVEAU_STATE_CACHE_DISABLE
  38
  39 #define NV_READ(reg) *(volatile u_int32_t *)(nmesa->mmio + (reg))
  40
  41 #define NV_FIFO_READ(reg) *(volatile u_int32_t *)(nmesa->fifo.mmio + (reg/4))
  42 #define NV_FIFO_WRITE(reg,value) *(volatile u_int32_t *)(nmesa->fifo.mmio + (reg/4)) = value;
  43 #define NV_FIFO_READ_GET() ((NV_FIFO_READ(NV03_FIFO_REGS_DMAGET) - nmesa->fifo.put_base) >> 2)
  44 #define NV_FIFO_WRITE_PUT(val) NV_FIFO_WRITE(NV03_FIFO_REGS_DMAPUT, ((val)<<2) + nmesa->fifo.put_base)
  45
  46 /*
  47  * Ring/fifo interface
  48  *
  49  * - Begin a ring section with BEGIN_RING_SIZE (if you know the full size in advance)
  50  * - Output stuff to the ring with either OUT_RINGp (outputs a raw mem chunk), OUT_RING (1 uint32_t) or OUT_RINGf (1 float)
  51  * - RING_AVAILABLE returns the available fifo (in uint32_ts)
  52  * - RING_AHEAD returns how much ahead of the last submission point we are
  53  * - FIRE_RING fires whatever we have that wasn't fired before
  54  * - WAIT_RING waits for size (in uint32_ts) to be available in the fifo
  55  */
  56
  57 /* Enable for ring debugging.  Prints out writes to the ring buffer
  58  * but does not actually write to it.
  59  */
  60 #ifdef NOUVEAU_RING_DEBUG
  61
  62 #define OUT_RINGp(ptr,sz) do {                                                  \
  63 uint32_t* p=(uint32_t*)(ptr);                                                   \
  64 int i; printf("OUT_RINGp: (size 0x%x dwords)\n",sz); for(i=0;i<sz;i++) printf(" 0x%08x   %f\n", *(p+i), *((float*)(p+i)));      \
  65 }while(0)
  66
  67 #define OUT_RING(n) do {                                                        \
  68     printf("OUT_RINGn: 0x%08x (%s)\n", n, __func__);                            \
  69 }while(0)
  70
  71 #define OUT_RINGf(n) do {                                                       \
  72     printf("OUT_RINGf: %.04f (%s)\n", n, __func__);                             \
  73 }while(0)
  74
  75 #else
  76
  77 #define OUT_RINGp(ptr,sz) do{                                                   \
  78         memcpy(nmesa->fifo.buffer+nmesa->fifo.current,ptr,(sz)*4);              \
  79         nmesa->fifo.current+=(sz);                                              \
  80 }while(0)
  81
  82 #define OUT_RING(n) do {                                                        \
  83 nmesa->fifo.buffer[nmesa->fifo.current++]=(n);                                  \
  84 }while(0)
  85
  86 #define OUT_RINGf(n) do {                                                       \
  87 *((float*)(nmesa->fifo.buffer+nmesa->fifo.current++))=(n);                      \
  88 }while(0)
  89
  90 #endif
  91
  92 #define BEGIN_RING_SIZE(subchannel,tag,size) do {                                       \
  93         nouveau_state_cache_flush(nmesa);                                               \
  94         if (nmesa->fifo.free <= (size))                                                 \
  95                 WAIT_RING(nmesa,(size));                                                \
  96         OUT_RING( ((size)<<18) | ((subchannel) << 13) | (tag));                         \
  97         nmesa->fifo.free -= ((size) + 1);                                               \
  98 }while(0)
  99
 100 extern void WAIT_RING(nouveauContextPtr nmesa,u_int32_t size);
 101 extern void nouveau_state_cache_flush(nouveauContextPtr nmesa);
 102 extern void nouveau_state_cache_init(nouveauContextPtr nmesa);
 103
 104 #ifdef NOUVEAU_STATE_CACHE_DISABLE
 105 #define BEGIN_RING_CACHE(subc,tag,size) BEGIN_RING_SIZE((subc), (tag), (size))
 106 #define OUT_RING_CACHE(n) OUT_RING((n))
 107 #define OUT_RING_CACHEf(n) OUT_RINGf((n))
 108 #define OUT_RING_CACHEp(ptr, sz) OUT_RINGp((ptr), (sz))
 109 #else
 110 #define BEGIN_RING_CACHE(subchannel,tag,size) do {                                      \
 111         nmesa->state_cache.dirty=1;                                                     \
 112         nmesa->state_cache.current_pos=((tag)/4);                                       \
 113 }while(0)
 114
 115 #define OUT_RING_CACHE(n) do {                                                                  \
 116         if (nmesa->state_cache.atoms[nmesa->state_cache.current_pos].value!=(n))        {       \
 117                 nmesa->state_cache.atoms[nmesa->state_cache.current_pos].dirty=1;               \
 118                 nmesa->state_cache.hdirty[nmesa->state_cache.current_pos/NOUVEAU_STATE_CACHE_HIER_SIZE]=1;              \
 119                 nmesa->state_cache.atoms[nmesa->state_cache.current_pos].value=(n);             \
 120         }                                                                                       \
 121         nmesa->state_cache.current_pos++;                                                       \
 122 }while(0)
 123
 124 #define OUT_RING_CACHEf(n) do {                                                                 \
 125         if ((*(float*)(&nmesa->state_cache.atoms[nmesa->state_cache.current_pos].value))!=(n)){ \
 126                 nmesa->state_cache.atoms[nmesa->state_cache.current_pos].dirty=1;               \
 127                 nmesa->state_cache.hdirty[nmesa->state_cache.current_pos/NOUVEAU_STATE_CACHE_HIER_SIZE]=1;              \
 128                 (*(float*)(&nmesa->state_cache.atoms[nmesa->state_cache.current_pos].value))=(n);\
 129         }                                                                                       \
 130         nmesa->state_cache.current_pos++;                                                       \
 131 }while(0)
 132
 133 #define OUT_RING_CACHEp(ptr,sz) do {                                                    \
 134 uint32_t* p=(uint32_t*)(ptr);                                                           \
 135 int i; for(i=0;i<sz;i++) OUT_RING_CACHE(*(p+i));                                        \
 136 }while(0)
 137 #endif
 138
 139 #define RING_AVAILABLE() (nmesa->fifo.free-1)
 140
 141 #define RING_AHEAD() ((nmesa->fifo.put<=nmesa->fifo.current)?(nmesa->fifo.current-nmesa->fifo.put):nmesa->fifo.max-nmesa->fifo.put+nmesa->fifo.current)
 142
 143 #define FIRE_RING() do {                             \
 144         if (nmesa->fifo.current!=nmesa->fifo.put) {  \
 145                 nmesa->fifo.put=nmesa->fifo.current; \
 146                 NV_FIFO_WRITE_PUT(nmesa->fifo.put);  \
 147         }                                            \
 148 }while(0)
 149
 150 extern void nouveauWaitForIdle(nouveauContextPtr nmesa);
 151 extern void nouveauWaitForIdleLocked(nouveauContextPtr nmesa);
 152 extern GLboolean nouveauFifoInit(nouveauContextPtr nmesa);
 153
 154 #endif /* __NOUVEAU_FIFO_H__ */
 155
 156