summaryrefslogtreecommitdiffstats
path: root/kernel/drivers/gpu/drm/mga/mga_drv.h
diff options
context:
space:
mode:
Diffstat (limited to 'kernel/drivers/gpu/drm/mga/mga_drv.h')
-rw-r--r--kernel/drivers/gpu/drm/mga/mga_drv.h668
1 files changed, 668 insertions, 0 deletions
diff --git a/kernel/drivers/gpu/drm/mga/mga_drv.h b/kernel/drivers/gpu/drm/mga/mga_drv.h
new file mode 100644
index 000000000..b4a201491
--- /dev/null
+++ b/kernel/drivers/gpu/drm/mga/mga_drv.h
@@ -0,0 +1,668 @@
+/* mga_drv.h -- Private header for the Matrox G200/G400 driver -*- linux-c -*-
+ * Created: Mon Dec 13 01:50:01 1999 by jhartmann@precisioninsight.com
+ *
+ * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
+ * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
+ * 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, sublicense,
+ * 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 NONINFRINGEMENT. IN NO EVENT SHALL
+ * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS 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.
+ *
+ * Authors:
+ * Gareth Hughes <gareth@valinux.com>
+ */
+
+#ifndef __MGA_DRV_H__
+#define __MGA_DRV_H__
+
+#include <drm/drm_legacy.h>
+
+/* General customization:
+ */
+
+#define DRIVER_AUTHOR "Gareth Hughes, VA Linux Systems Inc."
+
+#define DRIVER_NAME "mga"
+#define DRIVER_DESC "Matrox G200/G400"
+#define DRIVER_DATE "20051102"
+
+#define DRIVER_MAJOR 3
+#define DRIVER_MINOR 2
+#define DRIVER_PATCHLEVEL 1
+
+typedef struct drm_mga_primary_buffer {
+ u8 *start;
+ u8 *end;
+ int size;
+
+ u32 tail;
+ int space;
+ volatile long wrapped;
+
+ volatile u32 *status;
+
+ u32 last_flush;
+ u32 last_wrap;
+
+ u32 high_mark;
+} drm_mga_primary_buffer_t;
+
+typedef struct drm_mga_freelist {
+ struct drm_mga_freelist *next;
+ struct drm_mga_freelist *prev;
+ drm_mga_age_t age;
+ struct drm_buf *buf;
+} drm_mga_freelist_t;
+
+typedef struct {
+ drm_mga_freelist_t *list_entry;
+ int discard;
+ int dispatched;
+} drm_mga_buf_priv_t;
+
+typedef struct drm_mga_private {
+ drm_mga_primary_buffer_t prim;
+ drm_mga_sarea_t *sarea_priv;
+
+ drm_mga_freelist_t *head;
+ drm_mga_freelist_t *tail;
+
+ unsigned int warp_pipe;
+ unsigned long warp_pipe_phys[MGA_MAX_WARP_PIPES];
+
+ int chipset;
+ int usec_timeout;
+
+ /**
+ * If set, the new DMA initialization sequence was used. This is
+ * primarilly used to select how the driver should uninitialized its
+ * internal DMA structures.
+ */
+ int used_new_dma_init;
+
+ /**
+ * If AGP memory is used for DMA buffers, this will be the value
+ * \c MGA_PAGPXFER. Otherwise, it will be zero (for a PCI transfer).
+ */
+ u32 dma_access;
+
+ /**
+ * If AGP memory is used for DMA buffers, this will be the value
+ * \c MGA_WAGP_ENABLE. Otherwise, it will be zero (for a PCI
+ * transfer).
+ */
+ u32 wagp_enable;
+
+ /**
+ * \name MMIO region parameters.
+ *
+ * \sa drm_mga_private_t::mmio
+ */
+ /*@{ */
+ resource_size_t mmio_base; /**< Bus address of base of MMIO. */
+ resource_size_t mmio_size; /**< Size of the MMIO region. */
+ /*@} */
+
+ u32 clear_cmd;
+ u32 maccess;
+
+ atomic_t vbl_received; /**< Number of vblanks received. */
+ wait_queue_head_t fence_queue;
+ atomic_t last_fence_retired;
+ u32 next_fence_to_post;
+
+ unsigned int fb_cpp;
+ unsigned int front_offset;
+ unsigned int front_pitch;
+ unsigned int back_offset;
+ unsigned int back_pitch;
+
+ unsigned int depth_cpp;
+ unsigned int depth_offset;
+ unsigned int depth_pitch;
+
+ unsigned int texture_offset;
+ unsigned int texture_size;
+
+ drm_local_map_t *sarea;
+ drm_local_map_t *mmio;
+ drm_local_map_t *status;
+ drm_local_map_t *warp;
+ drm_local_map_t *primary;
+ drm_local_map_t *agp_textures;
+
+ unsigned long agp_handle;
+ unsigned int agp_size;
+} drm_mga_private_t;
+
+extern const struct drm_ioctl_desc mga_ioctls[];
+extern int mga_max_ioctl;
+
+ /* mga_dma.c */
+extern int mga_dma_bootstrap(struct drm_device *dev, void *data,
+ struct drm_file *file_priv);
+extern int mga_dma_init(struct drm_device *dev, void *data,
+ struct drm_file *file_priv);
+extern int mga_dma_flush(struct drm_device *dev, void *data,
+ struct drm_file *file_priv);
+extern int mga_dma_reset(struct drm_device *dev, void *data,
+ struct drm_file *file_priv);
+extern int mga_dma_buffers(struct drm_device *dev, void *data,
+ struct drm_file *file_priv);
+extern int mga_driver_load(struct drm_device *dev, unsigned long flags);
+extern int mga_driver_unload(struct drm_device *dev);
+extern void mga_driver_lastclose(struct drm_device *dev);
+extern int mga_driver_dma_quiescent(struct drm_device *dev);
+
+extern int mga_do_wait_for_idle(drm_mga_private_t *dev_priv);
+
+extern void mga_do_dma_flush(drm_mga_private_t *dev_priv);
+extern void mga_do_dma_wrap_start(drm_mga_private_t *dev_priv);
+extern void mga_do_dma_wrap_end(drm_mga_private_t *dev_priv);
+
+extern int mga_freelist_put(struct drm_device *dev, struct drm_buf *buf);
+
+ /* mga_warp.c */
+extern int mga_warp_install_microcode(drm_mga_private_t *dev_priv);
+extern int mga_warp_init(drm_mga_private_t *dev_priv);
+
+ /* mga_irq.c */
+extern int mga_enable_vblank(struct drm_device *dev, int crtc);
+extern void mga_disable_vblank(struct drm_device *dev, int crtc);
+extern u32 mga_get_vblank_counter(struct drm_device *dev, int crtc);
+extern int mga_driver_fence_wait(struct drm_device *dev, unsigned int *sequence);
+extern int mga_driver_vblank_wait(struct drm_device *dev, unsigned int *sequence);
+extern irqreturn_t mga_driver_irq_handler(int irq, void *arg);
+extern void mga_driver_irq_preinstall(struct drm_device *dev);
+extern int mga_driver_irq_postinstall(struct drm_device *dev);
+extern void mga_driver_irq_uninstall(struct drm_device *dev);
+extern long mga_compat_ioctl(struct file *filp, unsigned int cmd,
+ unsigned long arg);
+
+#define mga_flush_write_combine() wmb()
+
+#define MGA_READ8(reg) DRM_READ8(dev_priv->mmio, (reg))
+#define MGA_READ(reg) DRM_READ32(dev_priv->mmio, (reg))
+#define MGA_WRITE8(reg, val) DRM_WRITE8(dev_priv->mmio, (reg), (val))
+#define MGA_WRITE(reg, val) DRM_WRITE32(dev_priv->mmio, (reg), (val))
+
+#define DWGREG0 0x1c00
+#define DWGREG0_END 0x1dff
+#define DWGREG1 0x2c00
+#define DWGREG1_END 0x2dff
+
+#define ISREG0(r) (r >= DWGREG0 && r <= DWGREG0_END)
+#define DMAREG0(r) (u8)((r - DWGREG0) >> 2)
+#define DMAREG1(r) (u8)(((r - DWGREG1) >> 2) | 0x80)
+#define DMAREG(r) (ISREG0(r) ? DMAREG0(r) : DMAREG1(r))
+
+/* ================================================================
+ * Helper macross...
+ */
+
+#define MGA_EMIT_STATE(dev_priv, dirty) \
+do { \
+ if ((dirty) & ~MGA_UPLOAD_CLIPRECTS) { \
+ if (dev_priv->chipset >= MGA_CARD_TYPE_G400) \
+ mga_g400_emit_state(dev_priv); \
+ else \
+ mga_g200_emit_state(dev_priv); \
+ } \
+} while (0)
+
+#define WRAP_TEST_WITH_RETURN(dev_priv) \
+do { \
+ if (test_bit(0, &dev_priv->prim.wrapped)) { \
+ if (mga_is_idle(dev_priv)) { \
+ mga_do_dma_wrap_end(dev_priv); \
+ } else if (dev_priv->prim.space < \
+ dev_priv->prim.high_mark) { \
+ if (MGA_DMA_DEBUG) \
+ DRM_INFO("wrap...\n"); \
+ return -EBUSY; \
+ } \
+ } \
+} while (0)
+
+#define WRAP_WAIT_WITH_RETURN(dev_priv) \
+do { \
+ if (test_bit(0, &dev_priv->prim.wrapped)) { \
+ if (mga_do_wait_for_idle(dev_priv) < 0) { \
+ if (MGA_DMA_DEBUG) \
+ DRM_INFO("wrap...\n"); \
+ return -EBUSY; \
+ } \
+ mga_do_dma_wrap_end(dev_priv); \
+ } \
+} while (0)
+
+/* ================================================================
+ * Primary DMA command stream
+ */
+
+#define MGA_VERBOSE 0
+
+#define DMA_LOCALS unsigned int write; volatile u8 *prim;
+
+#define DMA_BLOCK_SIZE (5 * sizeof(u32))
+
+#define BEGIN_DMA(n) \
+do { \
+ if (MGA_VERBOSE) { \
+ DRM_INFO("BEGIN_DMA(%d)\n", (n)); \
+ DRM_INFO(" space=0x%x req=0x%Zx\n", \
+ dev_priv->prim.space, (n) * DMA_BLOCK_SIZE); \
+ } \
+ prim = dev_priv->prim.start; \
+ write = dev_priv->prim.tail; \
+} while (0)
+
+#define BEGIN_DMA_WRAP() \
+do { \
+ if (MGA_VERBOSE) { \
+ DRM_INFO("BEGIN_DMA()\n"); \
+ DRM_INFO(" space=0x%x\n", dev_priv->prim.space); \
+ } \
+ prim = dev_priv->prim.start; \
+ write = dev_priv->prim.tail; \
+} while (0)
+
+#define ADVANCE_DMA() \
+do { \
+ dev_priv->prim.tail = write; \
+ if (MGA_VERBOSE) \
+ DRM_INFO("ADVANCE_DMA() tail=0x%05x sp=0x%x\n", \
+ write, dev_priv->prim.space); \
+} while (0)
+
+#define FLUSH_DMA() \
+do { \
+ if (0) { \
+ DRM_INFO("\n"); \
+ DRM_INFO(" tail=0x%06x head=0x%06lx\n", \
+ dev_priv->prim.tail, \
+ (unsigned long)(MGA_READ(MGA_PRIMADDRESS) - \
+ dev_priv->primary->offset)); \
+ } \
+ if (!test_bit(0, &dev_priv->prim.wrapped)) { \
+ if (dev_priv->prim.space < dev_priv->prim.high_mark) \
+ mga_do_dma_wrap_start(dev_priv); \
+ else \
+ mga_do_dma_flush(dev_priv); \
+ } \
+} while (0)
+
+/* Never use this, always use DMA_BLOCK(...) for primary DMA output.
+ */
+#define DMA_WRITE(offset, val) \
+do { \
+ if (MGA_VERBOSE) \
+ DRM_INFO(" DMA_WRITE( 0x%08x ) at 0x%04Zx\n", \
+ (u32)(val), write + (offset) * sizeof(u32)); \
+ *(volatile u32 *)(prim + write + (offset) * sizeof(u32)) = val; \
+} while (0)
+
+#define DMA_BLOCK(reg0, val0, reg1, val1, reg2, val2, reg3, val3) \
+do { \
+ DMA_WRITE(0, ((DMAREG(reg0) << 0) | \
+ (DMAREG(reg1) << 8) | \
+ (DMAREG(reg2) << 16) | \
+ (DMAREG(reg3) << 24))); \
+ DMA_WRITE(1, val0); \
+ DMA_WRITE(2, val1); \
+ DMA_WRITE(3, val2); \
+ DMA_WRITE(4, val3); \
+ write += DMA_BLOCK_SIZE; \
+} while (0)
+
+/* Buffer aging via primary DMA stream head pointer.
+ */
+
+#define SET_AGE(age, h, w) \
+do { \
+ (age)->head = h; \
+ (age)->wrap = w; \
+} while (0)
+
+#define TEST_AGE(age, h, w) ((age)->wrap < w || \
+ ((age)->wrap == w && \
+ (age)->head < h))
+
+#define AGE_BUFFER(buf_priv) \
+do { \
+ drm_mga_freelist_t *entry = (buf_priv)->list_entry; \
+ if ((buf_priv)->dispatched) { \
+ entry->age.head = (dev_priv->prim.tail + \
+ dev_priv->primary->offset); \
+ entry->age.wrap = dev_priv->sarea_priv->last_wrap; \
+ } else { \
+ entry->age.head = 0; \
+ entry->age.wrap = 0; \
+ } \
+} while (0)
+
+#define MGA_ENGINE_IDLE_MASK (MGA_SOFTRAPEN | \
+ MGA_DWGENGSTS | \
+ MGA_ENDPRDMASTS)
+#define MGA_DMA_IDLE_MASK (MGA_SOFTRAPEN | \
+ MGA_ENDPRDMASTS)
+
+#define MGA_DMA_DEBUG 0
+
+/* A reduced set of the mga registers.
+ */
+#define MGA_CRTC_INDEX 0x1fd4
+#define MGA_CRTC_DATA 0x1fd5
+
+/* CRTC11 */
+#define MGA_VINTCLR (1 << 4)
+#define MGA_VINTEN (1 << 5)
+
+#define MGA_ALPHACTRL 0x2c7c
+#define MGA_AR0 0x1c60
+#define MGA_AR1 0x1c64
+#define MGA_AR2 0x1c68
+#define MGA_AR3 0x1c6c
+#define MGA_AR4 0x1c70
+#define MGA_AR5 0x1c74
+#define MGA_AR6 0x1c78
+
+#define MGA_CXBNDRY 0x1c80
+#define MGA_CXLEFT 0x1ca0
+#define MGA_CXRIGHT 0x1ca4
+
+#define MGA_DMAPAD 0x1c54
+#define MGA_DSTORG 0x2cb8
+#define MGA_DWGCTL 0x1c00
+# define MGA_OPCOD_MASK (15 << 0)
+# define MGA_OPCOD_TRAP (4 << 0)
+# define MGA_OPCOD_TEXTURE_TRAP (6 << 0)
+# define MGA_OPCOD_BITBLT (8 << 0)
+# define MGA_OPCOD_ILOAD (9 << 0)
+# define MGA_ATYPE_MASK (7 << 4)
+# define MGA_ATYPE_RPL (0 << 4)
+# define MGA_ATYPE_RSTR (1 << 4)
+# define MGA_ATYPE_ZI (3 << 4)
+# define MGA_ATYPE_BLK (4 << 4)
+# define MGA_ATYPE_I (7 << 4)
+# define MGA_LINEAR (1 << 7)
+# define MGA_ZMODE_MASK (7 << 8)
+# define MGA_ZMODE_NOZCMP (0 << 8)
+# define MGA_ZMODE_ZE (2 << 8)
+# define MGA_ZMODE_ZNE (3 << 8)
+# define MGA_ZMODE_ZLT (4 << 8)
+# define MGA_ZMODE_ZLTE (5 << 8)
+# define MGA_ZMODE_ZGT (6 << 8)
+# define MGA_ZMODE_ZGTE (7 << 8)
+# define MGA_SOLID (1 << 11)
+# define MGA_ARZERO (1 << 12)
+# define MGA_SGNZERO (1 << 13)
+# define MGA_SHIFTZERO (1 << 14)
+# define MGA_BOP_MASK (15 << 16)
+# define MGA_BOP_ZERO (0 << 16)
+# define MGA_BOP_DST (10 << 16)
+# define MGA_BOP_SRC (12 << 16)
+# define MGA_BOP_ONE (15 << 16)
+# define MGA_TRANS_SHIFT 20
+# define MGA_TRANS_MASK (15 << 20)
+# define MGA_BLTMOD_MASK (15 << 25)
+# define MGA_BLTMOD_BMONOLEF (0 << 25)
+# define MGA_BLTMOD_BMONOWF (4 << 25)
+# define MGA_BLTMOD_PLAN (1 << 25)
+# define MGA_BLTMOD_BFCOL (2 << 25)
+# define MGA_BLTMOD_BU32BGR (3 << 25)
+# define MGA_BLTMOD_BU32RGB (7 << 25)
+# define MGA_BLTMOD_BU24BGR (11 << 25)
+# define MGA_BLTMOD_BU24RGB (15 << 25)
+# define MGA_PATTERN (1 << 29)
+# define MGA_TRANSC (1 << 30)
+# define MGA_CLIPDIS (1 << 31)
+#define MGA_DWGSYNC 0x2c4c
+
+#define MGA_FCOL 0x1c24
+#define MGA_FIFOSTATUS 0x1e10
+#define MGA_FOGCOL 0x1cf4
+#define MGA_FXBNDRY 0x1c84
+#define MGA_FXLEFT 0x1ca8
+#define MGA_FXRIGHT 0x1cac
+
+#define MGA_ICLEAR 0x1e18
+# define MGA_SOFTRAPICLR (1 << 0)
+# define MGA_VLINEICLR (1 << 5)
+#define MGA_IEN 0x1e1c
+# define MGA_SOFTRAPIEN (1 << 0)
+# define MGA_VLINEIEN (1 << 5)
+
+#define MGA_LEN 0x1c5c
+
+#define MGA_MACCESS 0x1c04
+
+#define MGA_PITCH 0x1c8c
+#define MGA_PLNWT 0x1c1c
+#define MGA_PRIMADDRESS 0x1e58
+# define MGA_DMA_GENERAL (0 << 0)
+# define MGA_DMA_BLIT (1 << 0)
+# define MGA_DMA_VECTOR (2 << 0)
+# define MGA_DMA_VERTEX (3 << 0)
+#define MGA_PRIMEND 0x1e5c
+# define MGA_PRIMNOSTART (1 << 0)
+# define MGA_PAGPXFER (1 << 1)
+#define MGA_PRIMPTR 0x1e50
+# define MGA_PRIMPTREN0 (1 << 0)
+# define MGA_PRIMPTREN1 (1 << 1)
+
+#define MGA_RST 0x1e40
+# define MGA_SOFTRESET (1 << 0)
+# define MGA_SOFTEXTRST (1 << 1)
+
+#define MGA_SECADDRESS 0x2c40
+#define MGA_SECEND 0x2c44
+#define MGA_SETUPADDRESS 0x2cd0
+#define MGA_SETUPEND 0x2cd4
+#define MGA_SGN 0x1c58
+#define MGA_SOFTRAP 0x2c48
+#define MGA_SRCORG 0x2cb4
+# define MGA_SRMMAP_MASK (1 << 0)
+# define MGA_SRCMAP_FB (0 << 0)
+# define MGA_SRCMAP_SYSMEM (1 << 0)
+# define MGA_SRCACC_MASK (1 << 1)
+# define MGA_SRCACC_PCI (0 << 1)
+# define MGA_SRCACC_AGP (1 << 1)
+#define MGA_STATUS 0x1e14
+# define MGA_SOFTRAPEN (1 << 0)
+# define MGA_VSYNCPEN (1 << 4)
+# define MGA_VLINEPEN (1 << 5)
+# define MGA_DWGENGSTS (1 << 16)
+# define MGA_ENDPRDMASTS (1 << 17)
+#define MGA_STENCIL 0x2cc8
+#define MGA_STENCILCTL 0x2ccc
+
+#define MGA_TDUALSTAGE0 0x2cf8
+#define MGA_TDUALSTAGE1 0x2cfc
+#define MGA_TEXBORDERCOL 0x2c5c
+#define MGA_TEXCTL 0x2c30
+#define MGA_TEXCTL2 0x2c3c
+# define MGA_DUALTEX (1 << 7)
+# define MGA_G400_TC2_MAGIC (1 << 15)
+# define MGA_MAP1_ENABLE (1 << 31)
+#define MGA_TEXFILTER 0x2c58
+#define MGA_TEXHEIGHT 0x2c2c
+#define MGA_TEXORG 0x2c24
+# define MGA_TEXORGMAP_MASK (1 << 0)
+# define MGA_TEXORGMAP_FB (0 << 0)
+# define MGA_TEXORGMAP_SYSMEM (1 << 0)
+# define MGA_TEXORGACC_MASK (1 << 1)
+# define MGA_TEXORGACC_PCI (0 << 1)
+# define MGA_TEXORGACC_AGP (1 << 1)
+#define MGA_TEXORG1 0x2ca4
+#define MGA_TEXORG2 0x2ca8
+#define MGA_TEXORG3 0x2cac
+#define MGA_TEXORG4 0x2cb0
+#define MGA_TEXTRANS 0x2c34
+#define MGA_TEXTRANSHIGH 0x2c38
+#define MGA_TEXWIDTH 0x2c28
+
+#define MGA_WACCEPTSEQ 0x1dd4
+#define MGA_WCODEADDR 0x1e6c
+#define MGA_WFLAG 0x1dc4
+#define MGA_WFLAG1 0x1de0
+#define MGA_WFLAGNB 0x1e64
+#define MGA_WFLAGNB1 0x1e08
+#define MGA_WGETMSB 0x1dc8
+#define MGA_WIADDR 0x1dc0
+#define MGA_WIADDR2 0x1dd8
+# define MGA_WMODE_SUSPEND (0 << 0)
+# define MGA_WMODE_RESUME (1 << 0)
+# define MGA_WMODE_JUMP (2 << 0)
+# define MGA_WMODE_START (3 << 0)
+# define MGA_WAGP_ENABLE (1 << 2)
+#define MGA_WMISC 0x1e70
+# define MGA_WUCODECACHE_ENABLE (1 << 0)
+# define MGA_WMASTER_ENABLE (1 << 1)
+# define MGA_WCACHEFLUSH_ENABLE (1 << 3)
+#define MGA_WVRTXSZ 0x1dcc
+
+#define MGA_YBOT 0x1c9c
+#define MGA_YDST 0x1c90
+#define MGA_YDSTLEN 0x1c88
+#define MGA_YDSTORG 0x1c94
+#define MGA_YTOP 0x1c98
+
+#define MGA_ZORG 0x1c0c
+
+/* This finishes the current batch of commands
+ */
+#define MGA_EXEC 0x0100
+
+/* AGP PLL encoding (for G200 only).
+ */
+#define MGA_AGP_PLL 0x1e4c
+# define MGA_AGP2XPLL_DISABLE (0 << 0)
+# define MGA_AGP2XPLL_ENABLE (1 << 0)
+
+/* Warp registers
+ */
+#define MGA_WR0 0x2d00
+#define MGA_WR1 0x2d04
+#define MGA_WR2 0x2d08
+#define MGA_WR3 0x2d0c
+#define MGA_WR4 0x2d10
+#define MGA_WR5 0x2d14
+#define MGA_WR6 0x2d18
+#define MGA_WR7 0x2d1c
+#define MGA_WR8 0x2d20
+#define MGA_WR9 0x2d24
+#define MGA_WR10 0x2d28
+#define MGA_WR11 0x2d2c
+#define MGA_WR12 0x2d30
+#define MGA_WR13 0x2d34
+#define MGA_WR14 0x2d38
+#define MGA_WR15 0x2d3c
+#define MGA_WR16 0x2d40
+#define MGA_WR17 0x2d44
+#define MGA_WR18 0x2d48
+#define MGA_WR19 0x2d4c
+#define MGA_WR20 0x2d50
+#define MGA_WR21 0x2d54
+#define MGA_WR22 0x2d58
+#define MGA_WR23 0x2d5c
+#define MGA_WR24 0x2d60
+#define MGA_WR25 0x2d64
+#define MGA_WR26 0x2d68
+#define MGA_WR27 0x2d6c
+#define MGA_WR28 0x2d70
+#define MGA_WR29 0x2d74
+#define MGA_WR30 0x2d78
+#define MGA_WR31 0x2d7c
+#define MGA_WR32 0x2d80
+#define MGA_WR33 0x2d84
+#define MGA_WR34 0x2d88
+#define MGA_WR35 0x2d8c
+#define MGA_WR36 0x2d90
+#define MGA_WR37 0x2d94
+#define MGA_WR38 0x2d98
+#define MGA_WR39 0x2d9c
+#define MGA_WR40 0x2da0
+#define MGA_WR41 0x2da4
+#define MGA_WR42 0x2da8
+#define MGA_WR43 0x2dac
+#define MGA_WR44 0x2db0
+#define MGA_WR45 0x2db4
+#define MGA_WR46 0x2db8
+#define MGA_WR47 0x2dbc
+#define MGA_WR48 0x2dc0
+#define MGA_WR49 0x2dc4
+#define MGA_WR50 0x2dc8
+#define MGA_WR51 0x2dcc
+#define MGA_WR52 0x2dd0
+#define MGA_WR53 0x2dd4
+#define MGA_WR54 0x2dd8
+#define MGA_WR55 0x2ddc
+#define MGA_WR56 0x2de0
+#define MGA_WR57 0x2de4
+#define MGA_WR58 0x2de8
+#define MGA_WR59 0x2dec
+#define MGA_WR60 0x2df0
+#define MGA_WR61 0x2df4
+#define MGA_WR62 0x2df8
+#define MGA_WR63 0x2dfc
+# define MGA_G400_WR_MAGIC (1 << 6)
+# define MGA_G400_WR56_MAGIC 0x46480000 /* 12800.0f */
+
+#define MGA_ILOAD_ALIGN 64
+#define MGA_ILOAD_MASK (MGA_ILOAD_ALIGN - 1)
+
+#define MGA_DWGCTL_FLUSH (MGA_OPCOD_TEXTURE_TRAP | \
+ MGA_ATYPE_I | \
+ MGA_ZMODE_NOZCMP | \
+ MGA_ARZERO | \
+ MGA_SGNZERO | \
+ MGA_BOP_SRC | \
+ (15 << MGA_TRANS_SHIFT))
+
+#define MGA_DWGCTL_CLEAR (MGA_OPCOD_TRAP | \
+ MGA_ZMODE_NOZCMP | \
+ MGA_SOLID | \
+ MGA_ARZERO | \
+ MGA_SGNZERO | \
+ MGA_SHIFTZERO | \
+ MGA_BOP_SRC | \
+ (0 << MGA_TRANS_SHIFT) | \
+ MGA_BLTMOD_BMONOLEF | \
+ MGA_TRANSC | \
+ MGA_CLIPDIS)
+
+#define MGA_DWGCTL_COPY (MGA_OPCOD_BITBLT | \
+ MGA_ATYPE_RPL | \
+ MGA_SGNZERO | \
+ MGA_SHIFTZERO | \
+ MGA_BOP_SRC | \
+ (0 << MGA_TRANS_SHIFT) | \
+ MGA_BLTMOD_BFCOL | \
+ MGA_CLIPDIS)
+
+/* Simple idle test.
+ */
+static __inline__ int mga_is_idle(drm_mga_private_t *dev_priv)
+{
+ u32 status = MGA_READ(MGA_STATUS) & MGA_ENGINE_IDLE_MASK;
+ return (status == MGA_ENDPRDMASTS);
+}
+
+#endif