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Diffstat (limited to 'drivers/char/drm/savage_drv.h')
| -rw-r--r-- | drivers/char/drm/savage_drv.h | 579 |
1 files changed, 579 insertions, 0 deletions
diff --git a/drivers/char/drm/savage_drv.h b/drivers/char/drm/savage_drv.h new file mode 100644 index 0000000..a454349 --- /dev/null +++ b/drivers/char/drm/savage_drv.h @@ -0,0 +1,579 @@ +/* savage_drv.h -- Private header for the savage driver + * + * Copyright 2004 Felix Kuehling + * All Rights Reserved. + * + * 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, sub license, + * 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 (including the + * next paragraph) 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 + * NON-INFRINGEMENT. IN NO EVENT SHALL FELIX KUEHLING 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. + */ + +#ifndef __SAVAGE_DRV_H__ +#define __SAVAGE_DRV_H__ + +#define DRIVER_AUTHOR "Felix Kuehling" + +#define DRIVER_NAME "savage" +#define DRIVER_DESC "Savage3D/MX/IX, Savage4, SuperSavage, Twister, ProSavage[DDR]" +#define DRIVER_DATE "20050313" + +#define DRIVER_MAJOR 2 +#define DRIVER_MINOR 4 +#define DRIVER_PATCHLEVEL 1 +/* Interface history: + * + * 1.x The DRM driver from the VIA/S3 code drop, basically a dummy + * 2.0 The first real DRM + * 2.1 Scissors registers managed by the DRM, 3D operations clipped by + * cliprects of the cmdbuf ioctl + * 2.2 Implemented SAVAGE_CMD_DMA_IDX and SAVAGE_CMD_VB_IDX + * 2.3 Event counters used by BCI_EVENT_EMIT/WAIT ioctls are now 32 bits + * wide and thus very long lived (unlikely to ever wrap). The size + * in the struct was 32 bits before, but only 16 bits were used + * 2.4 Implemented command DMA. Now drm_savage_init_t.cmd_dma_offset is + * actually used + */ + +typedef struct drm_savage_age { + uint16_t event; + unsigned int wrap; +} drm_savage_age_t; + +typedef struct drm_savage_buf_priv { + struct drm_savage_buf_priv *next; + struct drm_savage_buf_priv *prev; + drm_savage_age_t age; + drm_buf_t *buf; +} drm_savage_buf_priv_t; + +typedef struct drm_savage_dma_page { + drm_savage_age_t age; + unsigned int used, flushed; +} drm_savage_dma_page_t; +#define SAVAGE_DMA_PAGE_SIZE 1024 /* in dwords */ +/* Fake DMA buffer size in bytes. 4 pages. Allows a maximum command + * size of 16kbytes or 4k entries. Minimum requirement would be + * 10kbytes for 255 40-byte vertices in one drawing command. */ +#define SAVAGE_FAKE_DMA_SIZE (SAVAGE_DMA_PAGE_SIZE*4*4) + +/* interesting bits of hardware state that are saved in dev_priv */ +typedef union { + struct drm_savage_common_state { + uint32_t vbaddr; + } common; + struct { + unsigned char pad[sizeof(struct drm_savage_common_state)]; + uint32_t texctrl, texaddr; + uint32_t scstart, new_scstart; + uint32_t scend, new_scend; + } s3d; + struct { + unsigned char pad[sizeof(struct drm_savage_common_state)]; + uint32_t texdescr, texaddr0, texaddr1; + uint32_t drawctrl0, new_drawctrl0; + uint32_t drawctrl1, new_drawctrl1; + } s4; +} drm_savage_state_t; + +/* these chip tags should match the ones in the 2D driver in savage_regs.h. */ +enum savage_family { + S3_UNKNOWN = 0, + S3_SAVAGE3D, + S3_SAVAGE_MX, + S3_SAVAGE4, + S3_PROSAVAGE, + S3_TWISTER, + S3_PROSAVAGEDDR, + S3_SUPERSAVAGE, + S3_SAVAGE2000, + S3_LAST +}; + +#define S3_SAVAGE3D_SERIES(chip) ((chip>=S3_SAVAGE3D) && (chip<=S3_SAVAGE_MX)) + +#define S3_SAVAGE4_SERIES(chip) ((chip==S3_SAVAGE4) \ + || (chip==S3_PROSAVAGE) \ + || (chip==S3_TWISTER) \ + || (chip==S3_PROSAVAGEDDR)) + +#define S3_SAVAGE_MOBILE_SERIES(chip) ((chip==S3_SAVAGE_MX) || (chip==S3_SUPERSAVAGE)) + +#define S3_SAVAGE_SERIES(chip) ((chip>=S3_SAVAGE3D) && (chip<=S3_SAVAGE2000)) + +#define S3_MOBILE_TWISTER_SERIES(chip) ((chip==S3_TWISTER) \ + ||(chip==S3_PROSAVAGEDDR)) + +/* flags */ +#define SAVAGE_IS_AGP 1 + +typedef struct drm_savage_private { + drm_savage_sarea_t *sarea_priv; + + drm_savage_buf_priv_t head, tail; + + /* who am I? */ + enum savage_family chipset; + + unsigned int cob_size; + unsigned int bci_threshold_lo, bci_threshold_hi; + unsigned int dma_type; + + /* frame buffer layout */ + unsigned int fb_bpp; + unsigned int front_offset, front_pitch; + unsigned int back_offset, back_pitch; + unsigned int depth_bpp; + unsigned int depth_offset, depth_pitch; + + /* bitmap descriptors for swap and clear */ + unsigned int front_bd, back_bd, depth_bd; + + /* local textures */ + unsigned int texture_offset; + unsigned int texture_size; + + /* memory regions in physical memory */ + drm_local_map_t *sarea; + drm_local_map_t *mmio; + drm_local_map_t *fb; + drm_local_map_t *aperture; + drm_local_map_t *status; + drm_local_map_t *agp_textures; + drm_local_map_t *cmd_dma; + drm_local_map_t fake_dma; + + struct { + int handle; + unsigned long base, size; + } mtrr[3]; + + /* BCI and status-related stuff */ + volatile uint32_t *status_ptr, *bci_ptr; + uint32_t status_used_mask; + uint16_t event_counter; + unsigned int event_wrap; + + /* Savage4 command DMA */ + drm_savage_dma_page_t *dma_pages; + unsigned int nr_dma_pages, first_dma_page, current_dma_page; + drm_savage_age_t last_dma_age; + + /* saved hw state for global/local check on S3D */ + uint32_t hw_draw_ctrl, hw_zbuf_ctrl; + /* and for scissors (global, so don't emit if not changed) */ + uint32_t hw_scissors_start, hw_scissors_end; + + drm_savage_state_t state; + + /* after emitting a wait cmd Savage3D needs 63 nops before next DMA */ + unsigned int waiting; + + /* config/hardware-dependent function pointers */ + int (*wait_fifo)(struct drm_savage_private *dev_priv, unsigned int n); + int (*wait_evnt)(struct drm_savage_private *dev_priv, uint16_t e); + /* Err, there is a macro wait_event in include/linux/wait.h. + * Avoid unwanted macro expansion. */ + void (*emit_clip_rect)(struct drm_savage_private *dev_priv, + drm_clip_rect_t *pbox); + void (*dma_flush)(struct drm_savage_private *dev_priv); +} drm_savage_private_t; + +/* ioctls */ +extern int savage_bci_cmdbuf(DRM_IOCTL_ARGS); +extern int savage_bci_buffers(DRM_IOCTL_ARGS); + +/* BCI functions */ +extern uint16_t savage_bci_emit_event(drm_savage_private_t *dev_priv, + unsigned int flags); +extern void savage_freelist_put(drm_device_t *dev, drm_buf_t *buf); +extern void savage_dma_reset(drm_savage_private_t *dev_priv); +extern void savage_dma_wait(drm_savage_private_t *dev_priv, unsigned int page); +extern uint32_t *savage_dma_alloc(drm_savage_private_t *dev_priv, + unsigned int n); +extern int savage_preinit(drm_device_t *dev, unsigned long chipset); +extern int savage_postcleanup(drm_device_t *dev); +extern int savage_do_cleanup_bci(drm_device_t *dev); +extern void savage_reclaim_buffers(drm_device_t *dev, DRMFILE filp); + +/* state functions */ +extern void savage_emit_clip_rect_s3d(drm_savage_private_t *dev_priv, + drm_clip_rect_t *pbox); +extern void savage_emit_clip_rect_s4(drm_savage_private_t *dev_priv, + drm_clip_rect_t *pbox); + +#define SAVAGE_FB_SIZE_S3 0x01000000 /* 16MB */ +#define SAVAGE_FB_SIZE_S4 0x02000000 /* 32MB */ +#define SAVAGE_MMIO_SIZE 0x00080000 /* 512kB */ +#define SAVAGE_APERTURE_OFFSET 0x02000000 /* 32MB */ +#define SAVAGE_APERTURE_SIZE 0x05000000 /* 5 tiled surfaces, 16MB each */ + +#define SAVAGE_BCI_OFFSET 0x00010000 /* offset of the BCI region + * inside the MMIO region */ +#define SAVAGE_BCI_FIFO_SIZE 32 /* number of entries in on-chip + * BCI FIFO */ + +/* + * MMIO registers + */ +#define SAVAGE_STATUS_WORD0 0x48C00 +#define SAVAGE_STATUS_WORD1 0x48C04 +#define SAVAGE_ALT_STATUS_WORD0 0x48C60 + +#define SAVAGE_FIFO_USED_MASK_S3D 0x0001ffff +#define SAVAGE_FIFO_USED_MASK_S4 0x001fffff + +/* Copied from savage_bci.h in the 2D driver with some renaming. */ + +/* Bitmap descriptors */ +#define SAVAGE_BD_STRIDE_SHIFT 0 +#define SAVAGE_BD_BPP_SHIFT 16 +#define SAVAGE_BD_TILE_SHIFT 24 +#define SAVAGE_BD_BW_DISABLE (1<<28) +/* common: */ +#define SAVAGE_BD_TILE_LINEAR 0 +/* savage4, MX, IX, 3D */ +#define SAVAGE_BD_TILE_16BPP 2 +#define SAVAGE_BD_TILE_32BPP 3 +/* twister, prosavage, DDR, supersavage, 2000 */ +#define SAVAGE_BD_TILE_DEST 1 +#define SAVAGE_BD_TILE_TEXTURE 2 +/* GBD - BCI enable */ +/* savage4, MX, IX, 3D */ +#define SAVAGE_GBD_BCI_ENABLE 8 +/* twister, prosavage, DDR, supersavage, 2000 */ +#define SAVAGE_GBD_BCI_ENABLE_TWISTER 0 + +#define SAVAGE_GBD_BIG_ENDIAN 4 +#define SAVAGE_GBD_LITTLE_ENDIAN 0 +#define SAVAGE_GBD_64 1 + +/* Global Bitmap Descriptor */ +#define SAVAGE_BCI_GLB_BD_LOW 0x8168 +#define SAVAGE_BCI_GLB_BD_HIGH 0x816C + +/* + * BCI registers + */ +/* Savage4/Twister/ProSavage 3D registers */ +#define SAVAGE_DRAWLOCALCTRL_S4 0x1e +#define SAVAGE_TEXPALADDR_S4 0x1f +#define SAVAGE_TEXCTRL0_S4 0x20 +#define SAVAGE_TEXCTRL1_S4 0x21 +#define SAVAGE_TEXADDR0_S4 0x22 +#define SAVAGE_TEXADDR1_S4 0x23 +#define SAVAGE_TEXBLEND0_S4 0x24 +#define SAVAGE_TEXBLEND1_S4 0x25 +#define SAVAGE_TEXXPRCLR_S4 0x26 /* never used */ +#define SAVAGE_TEXDESCR_S4 0x27 +#define SAVAGE_FOGTABLE_S4 0x28 +#define SAVAGE_FOGCTRL_S4 0x30 +#define SAVAGE_STENCILCTRL_S4 0x31 +#define SAVAGE_ZBUFCTRL_S4 0x32 +#define SAVAGE_ZBUFOFF_S4 0x33 +#define SAVAGE_DESTCTRL_S4 0x34 +#define SAVAGE_DRAWCTRL0_S4 0x35 +#define SAVAGE_DRAWCTRL1_S4 0x36 +#define SAVAGE_ZWATERMARK_S4 0x37 +#define SAVAGE_DESTTEXRWWATERMARK_S4 0x38 +#define SAVAGE_TEXBLENDCOLOR_S4 0x39 +/* Savage3D/MX/IX 3D registers */ +#define SAVAGE_TEXPALADDR_S3D 0x18 +#define SAVAGE_TEXXPRCLR_S3D 0x19 /* never used */ +#define SAVAGE_TEXADDR_S3D 0x1A +#define SAVAGE_TEXDESCR_S3D 0x1B +#define SAVAGE_TEXCTRL_S3D 0x1C +#define SAVAGE_FOGTABLE_S3D 0x20 +#define SAVAGE_FOGCTRL_S3D 0x30 +#define SAVAGE_DRAWCTRL_S3D 0x31 +#define SAVAGE_ZBUFCTRL_S3D 0x32 +#define SAVAGE_ZBUFOFF_S3D 0x33 +#define SAVAGE_DESTCTRL_S3D 0x34 +#define SAVAGE_SCSTART_S3D 0x35 +#define SAVAGE_SCEND_S3D 0x36 +#define SAVAGE_ZWATERMARK_S3D 0x37 +#define SAVAGE_DESTTEXRWWATERMARK_S3D 0x38 +/* common stuff */ +#define SAVAGE_VERTBUFADDR 0x3e +#define SAVAGE_BITPLANEWTMASK 0xd7 +#define SAVAGE_DMABUFADDR 0x51 + +/* texture enable bits (needed for tex addr checking) */ +#define SAVAGE_TEXCTRL_TEXEN_MASK 0x00010000 /* S3D */ +#define SAVAGE_TEXDESCR_TEX0EN_MASK 0x02000000 /* S4 */ +#define SAVAGE_TEXDESCR_TEX1EN_MASK 0x04000000 /* S4 */ + +/* Global fields in Savage4/Twister/ProSavage 3D registers: + * + * All texture registers and DrawLocalCtrl are local. All other + * registers are global. */ + +/* Global fields in Savage3D/MX/IX 3D registers: + * + * All texture registers are local. DrawCtrl and ZBufCtrl are + * partially local. All other registers are global. + * + * DrawCtrl global fields: cullMode, alphaTestCmpFunc, alphaTestEn, alphaRefVal + * ZBufCtrl global fields: zCmpFunc, zBufEn + */ +#define SAVAGE_DRAWCTRL_S3D_GLOBAL 0x03f3c00c +#define SAVAGE_ZBUFCTRL_S3D_GLOBAL 0x00000027 + +/* Masks for scissor bits (drawCtrl[01] on s4, scissorStart/End on s3d) + */ +#define SAVAGE_SCISSOR_MASK_S4 0x00fff7ff +#define SAVAGE_SCISSOR_MASK_S3D 0x07ff07ff + +/* + * BCI commands + */ +#define BCI_CMD_NOP 0x40000000 +#define BCI_CMD_RECT 0x48000000 +#define BCI_CMD_RECT_XP 0x01000000 +#define BCI_CMD_RECT_YP 0x02000000 +#define BCI_CMD_SCANLINE 0x50000000 +#define BCI_CMD_LINE 0x5C000000 +#define BCI_CMD_LINE_LAST_PIXEL 0x58000000 +#define BCI_CMD_BYTE_TEXT 0x63000000 +#define BCI_CMD_NT_BYTE_TEXT 0x67000000 +#define BCI_CMD_BIT_TEXT 0x6C000000 +#define BCI_CMD_GET_ROP(cmd) (((cmd) >> 16) & 0xFF) +#define BCI_CMD_SET_ROP(cmd, rop) ((cmd) |= ((rop & 0xFF) << 16)) +#define BCI_CMD_SEND_COLOR 0x00008000 + +#define BCI_CMD_CLIP_NONE 0x00000000 +#define BCI_CMD_CLIP_CURRENT 0x00002000 +#define BCI_CMD_CLIP_LR 0x00004000 +#define BCI_CMD_CLIP_NEW 0x00006000 + +#define BCI_CMD_DEST_GBD 0x00000000 +#define BCI_CMD_DEST_PBD 0x00000800 +#define BCI_CMD_DEST_PBD_NEW 0x00000C00 +#define BCI_CMD_DEST_SBD 0x00001000 +#define BCI_CMD_DEST_SBD_NEW 0x00001400 + +#define BCI_CMD_SRC_TRANSPARENT 0x00000200 +#define BCI_CMD_SRC_SOLID 0x00000000 +#define BCI_CMD_SRC_GBD 0x00000020 +#define BCI_CMD_SRC_COLOR 0x00000040 +#define BCI_CMD_SRC_MONO 0x00000060 +#define BCI_CMD_SRC_PBD_COLOR 0x00000080 +#define BCI_CMD_SRC_PBD_MONO 0x000000A0 +#define BCI_CMD_SRC_PBD_COLOR_NEW 0x000000C0 +#define BCI_CMD_SRC_PBD_MONO_NEW 0x000000E0 +#define BCI_CMD_SRC_SBD_COLOR 0x00000100 +#define BCI_CMD_SRC_SBD_MONO 0x00000120 +#define BCI_CMD_SRC_SBD_COLOR_NEW 0x00000140 +#define BCI_CMD_SRC_SBD_MONO_NEW 0x00000160 + +#define BCI_CMD_PAT_TRANSPARENT 0x00000010 +#define BCI_CMD_PAT_NONE 0x00000000 +#define BCI_CMD_PAT_COLOR 0x00000002 +#define BCI_CMD_PAT_MONO 0x00000003 +#define BCI_CMD_PAT_PBD_COLOR 0x00000004 +#define BCI_CMD_PAT_PBD_MONO 0x00000005 +#define BCI_CMD_PAT_PBD_COLOR_NEW 0x00000006 +#define BCI_CMD_PAT_PBD_MONO_NEW 0x00000007 +#define BCI_CMD_PAT_SBD_COLOR 0x00000008 +#define BCI_CMD_PAT_SBD_MONO 0x00000009 +#define BCI_CMD_PAT_SBD_COLOR_NEW 0x0000000A +#define BCI_CMD_PAT_SBD_MONO_NEW 0x0000000B + +#define BCI_BD_BW_DISABLE 0x10000000 +#define BCI_BD_TILE_MASK 0x03000000 +#define BCI_BD_TILE_NONE 0x00000000 +#define BCI_BD_TILE_16 0x02000000 +#define BCI_BD_TILE_32 0x03000000 +#define BCI_BD_GET_BPP(bd) (((bd) >> 16) & 0xFF) +#define BCI_BD_SET_BPP(bd, bpp) ((bd) |= (((bpp) & 0xFF) << 16)) +#define BCI_BD_GET_STRIDE(bd) ((bd) & 0xFFFF) +#define BCI_BD_SET_STRIDE(bd, st) ((bd) |= ((st) & 0xFFFF)) + +#define BCI_CMD_SET_REGISTER 0x96000000 + +#define BCI_CMD_WAIT 0xC0000000 +#define BCI_CMD_WAIT_3D 0x00010000 +#define BCI_CMD_WAIT_2D 0x00020000 + +#define BCI_CMD_UPDATE_EVENT_TAG 0x98000000 + +#define BCI_CMD_DRAW_PRIM 0x80000000 +#define BCI_CMD_DRAW_INDEXED_PRIM 0x88000000 +#define BCI_CMD_DRAW_CONT 0x01000000 +#define BCI_CMD_DRAW_TRILIST 0x00000000 +#define BCI_CMD_DRAW_TRISTRIP 0x02000000 +#define BCI_CMD_DRAW_TRIFAN 0x04000000 +#define BCI_CMD_DRAW_SKIPFLAGS 0x000000ff +#define BCI_CMD_DRAW_NO_Z 0x00000001 +#define BCI_CMD_DRAW_NO_W 0x00000002 +#define BCI_CMD_DRAW_NO_CD 0x00000004 +#define BCI_CMD_DRAW_NO_CS 0x00000008 +#define BCI_CMD_DRAW_NO_U0 0x00000010 +#define BCI_CMD_DRAW_NO_V0 0x00000020 +#define BCI_CMD_DRAW_NO_UV0 0x00000030 +#define BCI_CMD_DRAW_NO_U1 0x00000040 +#define BCI_CMD_DRAW_NO_V1 0x00000080 +#define BCI_CMD_DRAW_NO_UV1 0x000000c0 + +#define BCI_CMD_DMA 0xa8000000 + +#define BCI_W_H(w, h) ((((h) << 16) | (w)) & 0x0FFF0FFF) +#define BCI_X_Y(x, y) ((((y) << 16) | (x)) & 0x0FFF0FFF) +#define BCI_X_W(x, y) ((((w) << 16) | (x)) & 0x0FFF0FFF) +#define BCI_CLIP_LR(l, r) ((((r) << 16) | (l)) & 0x0FFF0FFF) +#define BCI_CLIP_TL(t, l) ((((t) << 16) | (l)) & 0x0FFF0FFF) +#define BCI_CLIP_BR(b, r) ((((b) << 16) | (r)) & 0x0FFF0FFF) + +#define BCI_LINE_X_Y(x, y) (((y) << 16) | ((x) & 0xFFFF)) +#define BCI_LINE_STEPS(diag, axi) (((axi) << 16) | ((diag) & 0xFFFF)) +#define BCI_LINE_MISC(maj, ym, xp, yp, err) \ + (((maj) & 0x1FFF) | \ + ((ym) ? 1<<13 : 0) | \ + ((xp) ? 1<<14 : 0) | \ + ((yp) ? 1<<15 : 0) | \ + ((err) << 16)) + +/* + * common commands + */ +#define BCI_SET_REGISTERS( first, n ) \ + BCI_WRITE(BCI_CMD_SET_REGISTER | \ + ((uint32_t)(n) & 0xff) << 16 | \ + ((uint32_t)(first) & 0xffff)) +#define DMA_SET_REGISTERS( first, n ) \ + DMA_WRITE(BCI_CMD_SET_REGISTER | \ + ((uint32_t)(n) & 0xff) << 16 | \ + ((uint32_t)(first) & 0xffff)) + +#define BCI_DRAW_PRIMITIVE(n, type, skip) \ + BCI_WRITE(BCI_CMD_DRAW_PRIM | (type) | (skip) | \ + ((n) << 16)) +#define DMA_DRAW_PRIMITIVE(n, type, skip) \ + DMA_WRITE(BCI_CMD_DRAW_PRIM | (type) | (skip) | \ + ((n) << 16)) + +#define BCI_DRAW_INDICES_S3D(n, type, i0) \ + BCI_WRITE(BCI_CMD_DRAW_INDEXED_PRIM | (type) | \ + ((n) << 16) | (i0)) + +#define BCI_DRAW_INDICES_S4(n, type, skip) \ + BCI_WRITE(BCI_CMD_DRAW_INDEXED_PRIM | (type) | \ + (skip) | ((n) << 16)) + +#define BCI_DMA(n) \ + BCI_WRITE(BCI_CMD_DMA | (((n) >> 1) - 1)) + +/* + * access to MMIO + */ +#define SAVAGE_READ(reg) DRM_READ32( dev_priv->mmio, (reg) ) +#define SAVAGE_WRITE(reg) DRM_WRITE32( dev_priv->mmio, (reg) ) + +/* + * access to the burst command interface (BCI) + */ +#define SAVAGE_BCI_DEBUG 1 + +#define BCI_LOCALS volatile uint32_t *bci_ptr; + +#define BEGIN_BCI( n ) do { \ + dev_priv->wait_fifo(dev_priv, (n)); \ + bci_ptr = dev_priv->bci_ptr; \ +} while(0) + +#define BCI_WRITE( val ) *bci_ptr++ = (uint32_t)(val) + +#define BCI_COPY_FROM_USER(src,n) do { \ + unsigned int i; \ + for (i = 0; i < n; ++i) { \ + uint32_t val; \ + DRM_GET_USER_UNCHECKED(val, &((uint32_t*)(src))[i]); \ + BCI_WRITE(val); \ + } \ +} while(0) + +/* + * command DMA support + */ +#define SAVAGE_DMA_DEBUG 1 + +#define DMA_LOCALS uint32_t *dma_ptr; + +#define BEGIN_DMA( n ) do { \ + unsigned int cur = dev_priv->current_dma_page; \ + unsigned int rest = SAVAGE_DMA_PAGE_SIZE - \ + dev_priv->dma_pages[cur].used; \ + if ((n) > rest) { \ + dma_ptr = savage_dma_alloc(dev_priv, (n)); \ + } else { /* fast path for small allocations */ \ + dma_ptr = (uint32_t *)dev_priv->cmd_dma->handle + \ + cur * SAVAGE_DMA_PAGE_SIZE + \ + dev_priv->dma_pages[cur].used; \ + if (dev_priv->dma_pages[cur].used == 0) \ + savage_dma_wait(dev_priv, cur); \ + dev_priv->dma_pages[cur].used += (n); \ + } \ +} while(0) + +#define DMA_WRITE( val ) *dma_ptr++ = (uint32_t)(val) + +#define DMA_COPY_FROM_USER(src,n) do { \ + DRM_COPY_FROM_USER_UNCHECKED(dma_ptr, (src), (n)*4); \ + dma_ptr += n; \ +} while(0) + +#if SAVAGE_DMA_DEBUG +#define DMA_COMMIT() do { \ + unsigned int cur = dev_priv->current_dma_page; \ + uint32_t *expected = (uint32_t *)dev_priv->cmd_dma->handle + \ + cur * SAVAGE_DMA_PAGE_SIZE + \ + dev_priv->dma_pages[cur].used; \ + if (dma_ptr != expected) { \ + DRM_ERROR("DMA allocation and use don't match: " \ + "%p != %p\n", expected, dma_ptr); \ + savage_dma_reset(dev_priv); \ + } \ +} while(0) +#else +#define DMA_COMMIT() do {/* nothing */} while(0) +#endif + +#define DMA_FLUSH() dev_priv->dma_flush(dev_priv) + +/* Buffer aging via event tag + */ + +#define UPDATE_EVENT_COUNTER( ) do { \ + if (dev_priv->status_ptr) { \ + uint16_t count; \ + /* coordinate with Xserver */ \ + count = dev_priv->status_ptr[1023]; \ + if (count < dev_priv->event_counter) \ + dev_priv->event_wrap++; \ + dev_priv->event_counter = count; \ + } \ +} while(0) + +#define SET_AGE( age, e, w ) do { \ + (age)->event = e; \ + (age)->wrap = w; \ +} while(0) + +#define TEST_AGE( age, e, w ) \ + ( (age)->wrap < (w) || ( (age)->wrap == (w) && (age)->event <= (e) ) ) + +#endif /* __SAVAGE_DRV_H__ */ |