savage_drm.h

  1 /* savage_drm.h -- Public header for the savage driver
  2  *
  3  * Copyright 2004  Felix Kuehling
  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  * the rights to use, copy, modify, merge, publish, distribute, sub license,
 10  * and/or sell copies of the Software, and to permit persons to whom the
 11  * Software is furnished to do so, subject to the following conditions:
 12  *
 13  * The above copyright notice and this permission notice (including the
 14  * next paragraph) shall be included in all copies or substantial portions
 15  * of the Software.
 16  *
 17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 18  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 19  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 20  * NON-INFRINGEMENT. IN NO EVENT SHALL FELIX KUEHLING BE LIABLE FOR
 21  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
 22  * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 23  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 24  */
 25 
 26 #ifndef __SAVAGE_DRM_H__
 27 #define __SAVAGE_DRM_H__
 28 
 29 #ifndef __SAVAGE_SAREA_DEFINES__
 30 #define __SAVAGE_SAREA_DEFINES__
 31 
 32 /* 2 heaps (1 for card, 1 for agp), each divided into upto 128
 33  * regions, subject to a minimum region size of (1<<16) == 64k.
 34  *
 35  * Clients may subdivide regions internally, but when sharing between
 36  * clients, the region size is the minimum granularity.
 37  */
 38 
 39 #define SAVAGE_CARD_HEAP                0
 40 #define SAVAGE_AGP_HEAP                 1
 41 #define SAVAGE_NR_TEX_HEAPS             2
 42 #define SAVAGE_NR_TEX_REGIONS           16
 43 #define SAVAGE_LOG_MIN_TEX_REGION_SIZE  16
 44 
 45 #endif                          /* __SAVAGE_SAREA_DEFINES__ */
 46 
 47 typedef struct _drm_savage_sarea {
 48         /* LRU lists for texture memory in agp space and on the card.
 49          */
 50         struct drm_tex_region texList[SAVAGE_NR_TEX_HEAPS][SAVAGE_NR_TEX_REGIONS +
 51                                                       1];
 52         unsigned int texAge[SAVAGE_NR_TEX_HEAPS];
 53 
 54         /* Mechanism to validate card state.
 55          */
 56         int ctxOwner;
 57 } drm_savage_sarea_t, *drm_savage_sarea_ptr;
 58 
 59 /* Savage-specific ioctls
 60  */
 61 #define DRM_SAVAGE_BCI_INIT             0x00
 62 #define DRM_SAVAGE_BCI_CMDBUF           0x01
 63 #define DRM_SAVAGE_BCI_EVENT_EMIT       0x02
 64 #define DRM_SAVAGE_BCI_EVENT_WAIT       0x03
 65 
 66 #define DRM_IOCTL_SAVAGE_INIT           DRM_IOW( DRM_COMMAND_BASE + DRM_SAVAGE_BCI_INIT, drm_savage_init_t)
 67 #define DRM_IOCTL_SAVAGE_CMDBUF         DRM_IOW( DRM_COMMAND_BASE + DRM_SAVAGE_BCI_CMDBUF, drm_savage_cmdbuf_t)
 68 #define DRM_IOCTL_SAVAGE_EVENT_EMIT     DRM_IOWR(DRM_COMMAND_BASE + DRM_SAVAGE_BCI_EVENT_EMIT, drm_savage_event_emit_t)
 69 #define DRM_IOCTL_SAVAGE_EVENT_WAIT     DRM_IOW( DRM_COMMAND_BASE + DRM_SAVAGE_BCI_EVENT_WAIT, drm_savage_event_wait_t)
 70 
 71 #define SAVAGE_DMA_PCI  1
 72 #define SAVAGE_DMA_AGP  3
 73 typedef struct drm_savage_init {
 74         enum {
 75                 SAVAGE_INIT_BCI = 1,
 76                 SAVAGE_CLEANUP_BCI = 2
 77         } func;
 78         unsigned int sarea_priv_offset;
 79 
 80         /* some parameters */
 81         unsigned int cob_size;
 82         unsigned int bci_threshold_lo, bci_threshold_hi;
 83         unsigned int dma_type;
 84 
 85         /* frame buffer layout */
 86         unsigned int fb_bpp;
 87         unsigned int front_offset, front_pitch;
 88         unsigned int back_offset, back_pitch;
 89         unsigned int depth_bpp;
 90         unsigned int depth_offset, depth_pitch;
 91 
 92         /* local textures */
 93         unsigned int texture_offset;
 94         unsigned int texture_size;
 95 
 96         /* physical locations of non-permanent maps */
 97         unsigned long status_offset;
 98         unsigned long buffers_offset;
 99         unsigned long agp_textures_offset;
100         unsigned long cmd_dma_offset;
101 } drm_savage_init_t;
102 
103 typedef union drm_savage_cmd_header drm_savage_cmd_header_t;
104 typedef struct drm_savage_cmdbuf {
105         /* command buffer in client's address space */
106         drm_savage_cmd_header_t __user *cmd_addr;
107         unsigned int size;      /* size of the command buffer in 64bit units */
108 
109         unsigned int dma_idx;   /* DMA buffer index to use */
110         int discard;            /* discard DMA buffer when done */
111         /* vertex buffer in client's address space */
112         unsigned int __user *vb_addr;
113         unsigned int vb_size;   /* size of client vertex buffer in bytes */
114         unsigned int vb_stride; /* stride of vertices in 32bit words */
115         /* boxes in client's address space */
116         struct drm_clip_rect __user *box_addr;
117         unsigned int nbox;      /* number of clipping boxes */
118 } drm_savage_cmdbuf_t;
119 
120 #define SAVAGE_WAIT_2D  0x1     /* wait for 2D idle before updating event tag */
121 #define SAVAGE_WAIT_3D  0x2     /* wait for 3D idle before updating event tag */
122 #define SAVAGE_WAIT_IRQ 0x4     /* emit or wait for IRQ, not implemented yet */
123 typedef struct drm_savage_event {
124         unsigned int count;
125         unsigned int flags;
126 } drm_savage_event_emit_t, drm_savage_event_wait_t;
127 
128 /* Commands for the cmdbuf ioctl
129  */
130 #define SAVAGE_CMD_STATE        0       /* a range of state registers */
131 #define SAVAGE_CMD_DMA_PRIM     1       /* vertices from DMA buffer */
132 #define SAVAGE_CMD_VB_PRIM      2       /* vertices from client vertex buffer */
133 #define SAVAGE_CMD_DMA_IDX      3       /* indexed vertices from DMA buffer */
134 #define SAVAGE_CMD_VB_IDX       4       /* indexed vertices client vertex buffer */
135 #define SAVAGE_CMD_CLEAR        5       /* clear buffers */
136 #define SAVAGE_CMD_SWAP         6       /* swap buffers */
137 
138 /* Primitive types
139 */
140 #define SAVAGE_PRIM_TRILIST     0       /* triangle list */
141 #define SAVAGE_PRIM_TRISTRIP    1       /* triangle strip */
142 #define SAVAGE_PRIM_TRIFAN      2       /* triangle fan */
143 #define SAVAGE_PRIM_TRILIST_201 3       /* reorder verts for correct flat
144                                          * shading on s3d */
145 
146 /* Skip flags (vertex format)
147  */
148 #define SAVAGE_SKIP_Z           0x01
149 #define SAVAGE_SKIP_W           0x02
150 #define SAVAGE_SKIP_C0          0x04
151 #define SAVAGE_SKIP_C1          0x08
152 #define SAVAGE_SKIP_S0          0x10
153 #define SAVAGE_SKIP_T0          0x20
154 #define SAVAGE_SKIP_ST0         0x30
155 #define SAVAGE_SKIP_S1          0x40
156 #define SAVAGE_SKIP_T1          0x80
157 #define SAVAGE_SKIP_ST1         0xc0
158 #define SAVAGE_SKIP_ALL_S3D     0x3f
159 #define SAVAGE_SKIP_ALL_S4      0xff
160 
161 /* Buffer names for clear command
162  */
163 #define SAVAGE_FRONT            0x1
164 #define SAVAGE_BACK             0x2
165 #define SAVAGE_DEPTH            0x4
166 
167 /* 64-bit command header
168  */
169 union drm_savage_cmd_header {
170         struct {
171                 unsigned char cmd;      /* command */
172                 unsigned char pad0;
173                 unsigned short pad1;
174                 unsigned short pad2;
175                 unsigned short pad3;
176         } cmd;                  /* generic */
177         struct {
178                 unsigned char cmd;
179                 unsigned char global;   /* need idle engine? */
180                 unsigned short count;   /* number of consecutive registers */
181                 unsigned short start;   /* first register */
182                 unsigned short pad3;
183         } state;                /* SAVAGE_CMD_STATE */
184         struct {
185                 unsigned char cmd;
186                 unsigned char prim;     /* primitive type */
187                 unsigned short skip;    /* vertex format (skip flags) */
188                 unsigned short count;   /* number of vertices */
189                 unsigned short start;   /* first vertex in DMA/vertex buffer */
190         } prim;                 /* SAVAGE_CMD_DMA_PRIM, SAVAGE_CMD_VB_PRIM */
191         struct {
192                 unsigned char cmd;
193                 unsigned char prim;
194                 unsigned short skip;
195                 unsigned short count;   /* number of indices that follow */
196                 unsigned short pad3;
197         } idx;                  /* SAVAGE_CMD_DMA_IDX, SAVAGE_CMD_VB_IDX */
198         struct {
199                 unsigned char cmd;
200                 unsigned char pad0;
201                 unsigned short pad1;
202                 unsigned int flags;
203         } clear0;               /* SAVAGE_CMD_CLEAR */
204         struct {
205                 unsigned int mask;
206                 unsigned int value;
207         } clear1;               /* SAVAGE_CMD_CLEAR data */
208 };
209 
210 #endif
211
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