# --- T2-COPYRIGHT-NOTE-BEGIN ---
# T2 SDE: architecture/mips64/package/*/4004_all-add-impact-driver.patch
# Copyright (C) 2024 The T2 SDE Project
# 
# This Copyright note is generated by scripts/Create-CopyPatch,
# more information can be found in the files COPYING and README.
# 
# This patch file is dual-licensed. It is available under the license the
# patched project is licensed under, as long as it is an OpenSource license
# as defined at http://www.opensource.org/ (e.g. BSD, X11) or under the terms
# of the GNU General Public License version 2 as used by the T2 SDE.
# --- T2-COPYRIGHT-NOTE-END ---

diff --git a/drivers/video/fbdev/Kconfig b/drivers/video/fbdev/Kconfig
index 591a13a59787..0f28a5604867 100644
--- a/drivers/video/fbdev/Kconfig
+++ b/drivers/video/fbdev/Kconfig
@@ -721,6 +721,12 @@ config FB_GBE_MEM
 	  This is the amount of memory reserved for the framebuffer,
 	  which can be any value between 1MB and 8MB.
 
+config FB_IMPACT
+	tristate "SGI Impact graphics support"
+	depends on FB && (SGI_IP22 || SGI_IP26 || SGI_IP27 || SGI_IP28 || SGI_IP30)
+	help
+	  SGI Impact (MardiGras/MGRAS) graphics card support.
+
 config FB_SBUS
 	bool "SBUS and UPA framebuffers"
 	depends on (FB = y) && SPARC
diff --git a/drivers/video/fbdev/Makefile b/drivers/video/fbdev/Makefile
index 13c900320c2c..25e16a8be5aa 100644
--- a/drivers/video/fbdev/Makefile
+++ b/drivers/video/fbdev/Makefile
@@ -125,6 +125,7 @@ obj-$(CONFIG_FB_PUV3_UNIGFX)      += fb-puv3.o
 obj-$(CONFIG_FB_HYPERV)		  += hyperv_fb.o
 obj-$(CONFIG_FB_OPENCORES)	  += ocfb.o
 obj-$(CONFIG_FB_SM712)		  += sm712fb.o
+obj-$(CONFIG_FB_IMPACT)		  += impact.o
 
 # Platform or fallback drivers go here
 obj-$(CONFIG_FB_UVESA)            += uvesafb.o
diff --git a/drivers/video/fbdev/impact.c b/drivers/video/fbdev/impact.c
new file mode 100644
index 000000000000..caaa6fb400cc
--- /dev/null
+++ b/drivers/video/fbdev/impact.c
@@ -0,0 +1,1297 @@
+/*
+ * drivers/video/fbdev/impact.c
+ *   SGI Octane MardiGras (IMPACTSR) graphics
+ *   SGI Indigo2 MardiGras (IMPACT) graphics
+ *
+ * Copyright (c)
+ *   2004-2006 by Stanislaw Skowronek <skylark@unaligned.org> (author)
+ *   2005 by Peter Fuerst <post@pfrst.de> (Indigo2 adaptation)
+ *   2007-2009 by Johannes Dickgreber <tanzy@gmx.de> (platform_driver)
+ *   2014 by Thomas Bogendoerfer <tsbogend@alpha.franken.de> (gio_driver)
+ *   2011-2015 by Joshua Kinard <kumba@gentoo.org> (upkeeping/maintenance)
+ *   2018-2024 René Rebe <rene@exactcode.de>
+ *
+ * Based on linux/drivers/video/skeletonfb.c
+ *
+ * This driver, as most of the IP30 (SGI Octane) port, is a result of massive
+ * amounts of reverse engineering and trial-and-error. If anyone is interested
+ * in helping with it, please contact me: <skylark@unaligned.org>.
+ *
+ * The basic functions of this driver are filling and blitting rectangles.
+ * To achieve the latter, two DMA operations are used on Impact. It is unclear
+ * to me, why is it so, but even Xsgi (the IRIX X11 server) does it this way.
+ * It seems that fb->fb operations are not operational on these cards.
+ *
+ * For this purpose, a kernel DMA pool is allocated (pool number 0). This pool
+ * is (by default) 64kB in size. An ioctl could be used to set the value at
+ * run-time. Applications can use this pool, however proper locking has to be
+ * guaranteed. Kernel should be locked out from this pool by an ioctl.
+ *
+ * The IMPACT is quite well worked-out currently, except for the Geometry
+ * Engines (GE11). Any information about use of those devices would be very
+ * useful. It would enable a Linux OpenGL driver, as most of OpenGL calls are
+ * supported directly by the hardware. So far, I can't initialize the GE11.
+ * Verification of microcode crashes the graphics.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file COPYING in the main directory of this archive for
+ * more details.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/string.h>
+#include <linux/mm.h>
+#include <linux/tty.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+#include <linux/fb.h>
+#include <linux/init.h>
+#include <linux/vmalloc.h>
+#include <linux/module.h>
+#include <linux/dma-mapping.h>
+#include <linux/spinlock.h>
+#include <linux/font.h>
+
+#include <video/impact.h>
+
+#ifndef SGI_INDIGO2
+/* IP27/IP30 */
+#include <linux/platform_device.h>
+#define USE_POOLS		5
+extern unsigned long xtalk_get_swin(int node, int wid);
+#else
+/* IP22/IP28 */
+#include <asm/sgi/mc.h>
+#include <asm/gio_device.h>
+#define USE_POOLS		4
+#endif
+
+#define MAX_POOLS		5
+#define IMP_KPOOL_SIZE		65536
+#define ALPHA_WAR		33
+
+/**
+ * struct impact_par - Impact private data.
+ * @mmio_virt: virtual mmio base.
+ * @mmio_base: physical mmio base.
+ * @pool_txtbl: txtbl[p][i] = pgidx(phys[p][i]).
+ * @pool_txnum: valid: txtbl[p][0 ... (txnum[p] - 1)].
+ * @pool_txmax: alloc: txtbl[p][0 ... (txmax[p] - 1)].
+ * @pool_txphys: txphys[p] = dma_addr(txtbl[p]).
+ * @kpool_virt: virt[p]: txnum[p] page_addr.
+ * @kpool_phys: phys[p][i] = dma_addr(virt[p][i]).
+ * @kpool_size: TBD.
+ * @num_rss: TBD.
+ * @open_flag: TBD.
+ * @lock: private lock variable for spin locking/unlocking.
+ * @pseudo_palette: TBD.
+ * @dev: struct device pointer for generic device data.
+ */
+struct impact_par {
+	/* I/O bases. */
+	void * __iomem mmio_virt;
+	unsigned long mmio_base;
+
+	/* DMA pool management. */
+	u32 *pool_txtbl[MAX_POOLS];
+	u32 pool_txnum[MAX_POOLS];
+	u32 pool_txmax[MAX_POOLS];
+	unsigned long pool_txphys[MAX_POOLS];
+
+	/* Kernel DMA pools. */
+	unsigned long **kpool_virt[MAX_POOLS];
+	unsigned long *kpool_phys[MAX_POOLS];
+	u32 kpool_size[MAX_POOLS];
+
+	/* Board config. */
+	u32 num_ge;
+	u32 num_rss;
+
+	/* Locking. */
+	int open_flag;
+	spinlock_t lock;
+
+	/* Misc. */
+	u32 pseudo_palette[16];
+	struct device *dev;
+};
+
+static struct fb_fix_screeninfo
+impact_fix_default = {
+#ifndef SGI_INDIGO2
+	.id =		"ImpactSR 0RSS",
+#else
+	.id =		"Impact",
+#endif
+	.smem_start =	0,
+	.smem_len =	0,
+	.type =		FB_TYPE_PACKED_PIXELS,
+	.visual =	FB_VISUAL_TRUECOLOR,
+	.xpanstep =	0,
+	.ypanstep =	0,
+	.ywrapstep =	0,
+	.line_length =	0,
+	.accel =	FB_ACCEL_SGI_IMPACT,
+};
+
+static struct fb_var_screeninfo
+impact_var_default = {
+	.xres =		1280,
+	.yres =		1024,
+	.xres_virtual =	1280,
+	.yres_virtual =	1024,
+	.bits_per_pixel = 24,
+	.red =		{ .offset = 0, .length = 8 },
+	.green =	{ .offset = 8, .length = 8 },
+	.blue =		{ .offset = 16, .length = 8 },
+	.transp =	{ .offset = 24, .length = 8 },
+};
+
+
+/* ----------------------------------------------------------------------- */
+/* Gory details */
+#define MMIO (((struct impact_par *)info->par)->mmio_virt)
+
+/**
+ * impact_wait_cfifo_empty - wait until impact CFIFO buffer is empty.
+ * @info: struct fb_info pointer to framebuffer data.
+ */
+static inline void
+impact_wait_cfifo_empty(struct fb_info *info)
+{
+	while (IMP_FIFOSTATUS(MMIO) & MSK_CFIFO_CNT)
+		cpu_relax();
+}
+
+/**
+ * impact_wait_dma_done - wait until pending DMA operations are complete.
+ * @info: struct fb_info pointer to framebuffer data.
+ */
+static inline void
+impact_wait_dma_done(struct fb_info *info)
+{
+	while (IMP_DMABUSY(MMIO) & 0x1f)
+		cpu_relax();
+
+	while (!(IMP_STATUS(MMIO) & 1))
+		cpu_relax();
+
+	while (!(IMP_STATUS(MMIO) & 2))	/* RSS_IDLE */
+		cpu_relax();
+
+	while (!(IMP_RESTATUS(MMIO) & 0x100))
+		cpu_relax();
+}
+
+/**
+ * impact_wait_dma_ready - wait until DMA is ready.
+ * @info: struct fb_info pointer to framebuffer data.
+ */
+static inline void
+impact_wait_dma_ready(struct fb_info *info)
+{
+	IMP_CFIFOW(MMIO) = 0x000e0100;
+	while (IMP_DMABUSY(MMIO) & 0x1eff)
+		cpu_relax();
+
+	while (!(IMP_STATUS(MMIO) & 2))
+		cpu_relax();
+}
+/* ----------------------------------------------------------------------- */
+
+
+/* ----------------------------------------------------------------------- */
+/* DMA management */
+
+/**
+ * impact_detachtxtbl - TBD.
+ * @info: struct fb_info pointer to framebuffer data.
+ * @pool: DMA pool number.
+ */
+static inline void
+impact_detachtxtbl(struct fb_info *info, unsigned long pool)
+{
+	/* Clear DMA pool. */
+	impact_wait_cfifo_empty(info);
+	impact_wait_dma_done(info);
+	IMP_CFIFOPW1(MMIO) = IMP_CMD_HQ_TXBASE(pool);
+	IMP_CFIFOP(MMIO) = 0x0000000000000009;
+	IMP_CFIFOP(MMIO) = IMP_CMD_HQ_TXMAX(pool, 0);
+	IMP_CFIFOP(MMIO) = IMP_CMD_HQ_PGBITS(pool, 0);
+#ifndef SGI_INDIGO2
+	IMP_CFIFOP(MMIO) = IMP_CMD_HQ_484B(pool, 0x00080000);
+#endif
+	impact_wait_cfifo_empty(info);
+	impact_wait_dma_ready(info);
+}
+
+/**
+ * impact_initdma - init impact DMA.
+ * @info: struct fb_info pointer to framebuffer data.
+ */
+static inline void __init
+impact_initdma(struct fb_info *info)
+{
+	struct impact_par *par = info->par;
+	unsigned long pool;
+
+	/* Clear DMA pools. */
+	for (pool = 0; pool < MAX_POOLS; pool++) {
+		impact_detachtxtbl(info, pool);
+		par->pool_txmax[pool] = 0;
+		par->pool_txnum[pool] = 0;
+	}
+
+	/* Set DMA parameters. */
+	impact_wait_cfifo_empty(info);
+	IMP_CFIFOP(MMIO) = IMP_CMD_HQ_PGSIZE(0);
+	IMP_CFIFOP(MMIO) = IMP_CMD_HQ_STACKPTR(0);
+#ifndef SGI_INDIGO2
+	IMP_CFIFOP(MMIO) = IMP_CMD_HQ_484A(0, 0x00180000);
+#endif
+	IMP_CFIFOPW(MMIO) = 0x000e0100;
+	IMP_CFIFOPW(MMIO) = 0x000e0100;
+	IMP_CFIFOPW(MMIO) = 0x000e0100;
+	IMP_CFIFOPW(MMIO) = 0x000e0100;
+	IMP_CFIFOPW(MMIO) = 0x000e0100;
+#ifndef SGI_INDIGO2
+	IMP_REG32(MMIO, 0x40918) = 0x00680000;
+	IMP_REG32(MMIO, 0x40920) = 0x80280000;
+	IMP_REG32(MMIO, 0x40928) = 0x00000000;
+#endif
+}
+
+/**
+ * impact_writetxtbl - write to the texture (?) tables.
+ * @info: struct fb_info pointer to framebuffer data.
+ * @pool: DMA pool number.
+ */
+static void
+impact_writetxtbl(struct fb_info *info, int pool)
+{
+	struct impact_par *par = info->par;
+
+	impact_wait_cfifo_empty(info);
+	impact_wait_dma_done(info);
+
+	/* Inform the card about a new DMA pool. */
+	IMP_CFIFOPW1(MMIO) = IMP_CMD_HQ_TXBASE(pool);
+	IMP_CFIFOP(MMIO) = par->pool_txphys[pool];
+	IMP_CFIFOP(MMIO) = IMP_CMD_HQ_TXMAX(pool, par->pool_txnum[pool]);
+	IMP_CFIFOP(MMIO) = IMP_CMD_HQ_PGBITS(pool, 0x0a);
+#ifndef SGI_INDIGO2
+	IMP_CFIFOP(MMIO) = IMP_CMD_HQ_484B(pool, 0x00180000);
+#endif
+	IMP_CFIFOPW(MMIO) = 0x000e0100;
+	IMP_CFIFOPW(MMIO) = 0x000e0100;
+	IMP_CFIFOPW(MMIO) = 0x000e0100;
+	IMP_CFIFOPW(MMIO) = 0x000e0100;
+	IMP_CFIFOPW(MMIO) = 0x000e0100;
+
+	impact_wait_cfifo_empty(info);
+	impact_wait_dma_ready(info);
+}
+
+/**
+ * impact_dma_alloc - use correct dma alloc func based on machine type.
+ * @dev: struct device pointer to pass to dma_alloc_[non]coherent().
+ * @size: dma size to alloc.
+ * @dma_handle: pointer to dma handle.
+ * @gfp: gfp flags.
+ */
+static inline void
+*impact_dma_alloc(struct device *dev, size_t size, dma_addr_t *dma_handle,
+		  gfp_t gfp)
+{
+#ifndef SGI_INDIGO2
+	/* IP27/IP30 are coherent. */
+	return dma_alloc_coherent(dev, size, dma_handle, gfp);
+#else
+	/* IP22/IP28 are noncoherent. */
+	return dma_alloc_noncoherent(dev, size, dma_handle, gfp);
+#endif
+}
+
+/**
+ * impact_dma_free - use correct dma free func based on machine type.
+ * @dev: struct device pointer to pass to dma_free_[non]coherent().
+ * @size: dma size to free.
+ * @vaddr: void pointer to virtual address to free.
+ * @dma_handle: dma handle address.
+ */
+static inline void
+impact_dma_free(struct device *dev, size_t size, void *vaddr,
+		dma_addr_t dma_handle)
+{
+#ifndef SGI_INDIGO2
+	/* IP27/IP30 are coherent. */
+	dma_free_coherent(dev, size, vaddr, dma_handle);
+#else
+	/* IP22/IP28 are noncoherent. */
+	dma_free_noncoherent(dev, size, vaddr, dma_handle);
+#endif
+}
+
+/**
+ * impact_alloctxtbl - allocate the texture (?) tables.
+ * @info: struct fb_info pointer to framebuffer data.
+ * @pool: DMA pool number.
+ * @pages: number of memory pages to allocate.
+ */
+static void
+impact_alloctxtbl(struct fb_info *info, int pool, int pages)
+{
+	int alloc_count;
+	u32 *dma_alloc;
+	dma_addr_t dma_handle;
+	struct impact_par *par = info->par;
+
+	if (pages > par->pool_txmax[pool]) {
+		/* Grow the pool; unlikely, but supported. */
+		alloc_count = pages;
+		if (alloc_count < 1024)
+			alloc_count = 1024;
+
+		if (par->pool_txmax[pool])
+			impact_dma_free(par->dev, (par->pool_txmax[pool] * 4),
+					par->pool_txtbl[pool],
+					par->pool_txphys[pool]);
+		dma_alloc = impact_dma_alloc(par->dev, (alloc_count * 4),
+					     &dma_handle, GFP_KERNEL);
+		par->pool_txtbl[pool] = dma_alloc;
+		par->pool_txphys[pool] = dma_handle;
+		par->pool_txmax[pool] = alloc_count;
+	}
+	par->pool_txnum[pool] = pages;
+}
+
+/**
+ * impact_resize_kpool - resize kernel DMA pools.
+ * @info: struct fb_info pointer to framebuffer data.
+ * @pool: DMA pool number.
+ * @size: new pool size.
+ * @growonly: only grow the pool (?).
+ */
+static void
+impact_resize_kpool(struct fb_info *info, int pool, int size, bool growonly)
+{
+	int i, pages;
+	unsigned long *dma_alloc;
+	dma_addr_t dma_handle;
+	struct impact_par *par = info->par;
+
+	if (growonly && (par->kpool_size[pool] >= size))
+		return;
+
+	/* Single line smallcopy (1280 * 4) MUST work. */
+	if (size < 8192)
+		size = 8192;
+	pages = ((size + (PAGE_SIZE - 1)) >> PAGE_SHIFT);
+
+	/* Before manipulating the tbl, detach it from the card. */
+	impact_detachtxtbl(info, pool);
+	if (par->kpool_size[pool] > 0) {
+		for (i = 0; i < par->pool_txnum[pool]; i++) {
+			ClearPageReserved(
+				  virt_to_page(par->kpool_virt[pool][i]));
+			impact_dma_free(par->dev, PAGE_SIZE,
+					par->kpool_virt[pool][i],
+					par->kpool_phys[pool][i]);
+		}
+		vfree(par->kpool_phys[pool]);
+		vfree(par->kpool_virt[pool]);
+	}
+	impact_alloctxtbl(info, pool, pages);
+
+	par->kpool_virt[pool] = vzalloc(pages * sizeof(unsigned long));
+	par->kpool_phys[pool] = vzalloc(pages * sizeof(unsigned long));
+	for (i = 0; i < par->pool_txnum[pool]; i++) {
+		dma_alloc = impact_dma_alloc(par->dev, PAGE_SIZE,
+					     &dma_handle, GFP_KERNEL);
+		par->kpool_virt[pool][i] = dma_alloc;
+		SetPageReserved(virt_to_page(par->kpool_virt[pool][i]));
+		par->kpool_phys[pool][i] = dma_handle;
+		par->pool_txtbl[pool][i] = (dma_handle >> PAGE_SHIFT);
+	}
+	flush_kernel_dcache_range(par->pool_txtbl[pool], (i * 4));
+
+	/* Finally, reattach the tbl to the card. */
+	impact_writetxtbl(info, pool);
+	par->kpool_size[pool] = (pages * PAGE_SIZE);
+}
+/* ----------------------------------------------------------------------- */
+
+
+/* ----------------------------------------------------------------------- */
+/* Basic drawing stuff */
+
+/**
+ * impact_rect - fill rectangle (?).
+ * @info: struct fb_info pointer to framebuffer data.
+ * @r: const struct fb_fillrect pointer to rectangle fill data.
+ * @lo: PP1 logic operation.
+ */
+static void
+impact_rect(struct fb_info *info, const struct fb_fillrect *r, u32 lo)
+{
+	u32 palette;
+
+	impact_wait_cfifo_empty(info);
+
+	if (lo == IMP_LO_COPY)
+		IMP_CFIFO(MMIO) = IMP_CMD_PP1FILLMODE(0x6300, lo);
+	else
+		IMP_CFIFO(MMIO) = IMP_CMD_PP1FILLMODE(0x6304, lo);
+
+	palette = ((u32 *)info->pseudo_palette)[r->color];
+	IMP_CFIFO(MMIO) = IMP_CMD_FILLMODE(0);
+	IMP_CFIFO(MMIO) = IMP_CMD_PACKEDCOLOR(palette);
+	IMP_CFIFO(MMIO) = IMP_CMD_BLOCKXYSTARTI(r->dx, r->dy);
+	IMP_CFIFO(MMIO) = IMP_CMD_BLOCKXYENDI(((r->dx + r->width) - 1),
+					      ((r->dy + r->height) - 1));
+	IMP_CFIFO(MMIO) = IMP_CMD_IR_ALIAS(0x18);
+}
+
+/**
+ * impact_smallcopy - copy a small area (?).
+ * @info: struct fb_info pointer to framebuffer data.
+ * @new: const struct fb_copyarea pointer to new area data.
+ */
+static void
+impact_smallcopy(struct fb_info *info, const struct fb_copyarea *a)
+{
+	u32 tw;
+	struct impact_par *par = info->par;
+
+	if (unlikely(a->width < 1 || a->height < 1))
+		return;
+
+	tw = ((a->width + 1) & ~1);
+
+	/* Setup and perform DMA from RE to host. */
+	impact_wait_dma_done(info);
+
+	/*
+	 * Select the RSS to read from.
+	 *
+	 * XXX: Beware, only Indigo2 MaxImpact has 2 REs, SI/HI will hang!
+	 */
+	if (par->num_rss == 2) {
+		if (a->sy & 1)
+			IMP_CFIFO(MMIO) = IMP_CMD_CONFIG(0xca5);
+		else
+			IMP_CFIFO(MMIO) = IMP_CMD_CONFIG(0xca4);
+	} else {
+		IMP_CFIFO(MMIO) = IMP_CMD_CONFIG(0xca4);
+	}
+
+	IMP_CFIFO(MMIO) = IMP_CMD_PIXCMD(2);
+	IMP_CFIFO(MMIO) = IMP_CMD_PP1FILLMODE(0x2200, IMP_LO_COPY);
+	IMP_CFIFO(MMIO) = IMP_CMD_COLORMASKLSBSA(0xffffff);
+	IMP_CFIFO(MMIO) = IMP_CMD_COLORMASKLSBSB(0xffffff);
+	IMP_CFIFO(MMIO) = IMP_CMD_COLORMASKMSBS(0);
+	IMP_CFIFO(MMIO) = IMP_CMD_DRBPOINTERS(0xc8240);
+	IMP_CFIFO(MMIO) = IMP_CMD_BLOCKXYSTARTI(a->sx,
+						((a->sy + a->height) - 1));
+	IMP_CFIFO(MMIO) = IMP_CMD_BLOCKXYENDI(((a->sx + tw) - 1), a->sy);
+	IMP_CFIFO(MMIO) = IMP_CMD_XFRMASKLO(0xffffff);
+	IMP_CFIFO(MMIO) = IMP_CMD_XFRMASKHI(0xffffff);
+	IMP_CFIFO(MMIO) = IMP_CMD_XFRSIZE(tw, a->height);
+	IMP_CFIFO(MMIO) = IMP_CMD_XFRCOUNTERS(tw, a->height);
+	IMP_CFIFO(MMIO) = IMP_CMD_XFRMODE(0x00080);
+	IMP_CFIFO(MMIO) = IMP_CMD_FILLMODE(0x01000000);
+	IMP_CFIFO(MMIO) = IMP_CMD_HQ_PIXELFORMAT(0x200);
+	IMP_CFIFO(MMIO) = IMP_CMD_HQ_SCANWIDTH(tw << 2);
+	IMP_CFIFO(MMIO) = IMP_CMD_HQ_DMATYPE(0x0a);
+	IMP_CFIFO(MMIO) = IMP_CMD_HQ_PG_LIST_0(0x80000000);
+	IMP_CFIFO(MMIO) = IMP_CMD_HQ_PG_WIDTH(tw << 2);
+	IMP_CFIFO(MMIO) = IMP_CMD_HQ_PG_OFFSET(0);
+	IMP_CFIFO(MMIO) = IMP_CMD_HQ_PG_STARTADDR(0);
+	IMP_CFIFO(MMIO) = IMP_CMD_HQ_PG_LINECNT(a->height);
+	IMP_CFIFO(MMIO) = IMP_CMD_HQ_PG_WIDTHA(tw << 2);
+	IMP_CFIFO(MMIO) = IMP_CMD_XFRCONTROL(8);
+	IMP_CFIFO(MMIO) = IMP_CMD_GLINE_XSTARTF(1);
+	IMP_CFIFO(MMIO) = IMP_CMD_IR_ALIAS(0x18);
+	IMP_CFIFO(MMIO) = IMP_CMD_HQ_DMACTRL_0(8);
+	IMP_CFIFO(MMIO) = IMP_CMD_XFRCONTROL(9);
+	impact_wait_dma_ready(info);
+	IMP_CFIFO(MMIO) = IMP_CMD_GLINE_XSTARTF(0);
+	IMP_CFIFO(MMIO) = IMP_CMD_RE_TOGGLECNTX(0);
+	IMP_CFIFO(MMIO) = IMP_CMD_XFRCOUNTERS(0, 0);
+
+	/* Setup and perform DMA from host to RE. */
+	impact_wait_dma_done(info);
+	IMP_CFIFO(MMIO) = IMP_CMD_CONFIG(0xca4);
+	IMP_CFIFO(MMIO) = IMP_CMD_PP1FILLMODE(0x6200, IMP_LO_COPY);
+	IMP_CFIFO(MMIO) = IMP_CMD_BLOCKXYSTARTI(a->dx,
+						((a->dy + a->height) - 1));
+	IMP_CFIFO(MMIO) = IMP_CMD_BLOCKXYENDI(((a->dx + tw) - 1), a->dy);
+	IMP_CFIFO(MMIO) = IMP_CMD_FILLMODE(0x01400000);
+	IMP_CFIFO(MMIO) = IMP_CMD_XFRMODE(0x00080);
+	IMP_CFIFO(MMIO) = IMP_CMD_HQ_PIXELFORMAT(0x600);
+	IMP_CFIFO(MMIO) = IMP_CMD_HQ_SCANWIDTH(tw << 2);
+	IMP_CFIFO(MMIO) = IMP_CMD_HQ_DMATYPE(0x0c);
+	IMP_CFIFO(MMIO) = IMP_CMD_PIXCMD(3);
+	IMP_CFIFO(MMIO) = IMP_CMD_XFRSIZE(tw, a->height);
+	IMP_CFIFO(MMIO) = IMP_CMD_XFRCOUNTERS(tw, a->height);
+	IMP_CFIFO(MMIO) = IMP_CMD_GLINE_XSTARTF(1);
+	IMP_CFIFO(MMIO) = IMP_CMD_IR_ALIAS(0x18);
+	IMP_CFIFO(MMIO) = IMP_CMD_XFRCONTROL(1);
+	IMP_CFIFO(MMIO) = IMP_CMD_HQ_PG_LIST_0(0x80000000);
+	IMP_CFIFO(MMIO) = IMP_CMD_HQ_PG_OFFSET(0);
+	IMP_CFIFO(MMIO) = IMP_CMD_HQ_PG_STARTADDR(0);
+	IMP_CFIFO(MMIO) = IMP_CMD_HQ_PG_LINECNT(a->height);
+	IMP_CFIFO(MMIO) = IMP_CMD_HQ_PG_WIDTHA(tw << 2);
+	IMP_CFIFO(MMIO) = IMP_CMD_HQ_DMACTRL_0(0);
+	IMP_CFIFOW1(MMIO) = 0x000e0400;
+	impact_wait_dma_done(info);
+	IMP_CFIFO(MMIO) = IMP_CMD_GLINE_XSTARTF(0);
+	IMP_CFIFO(MMIO) = IMP_CMD_RE_TOGGLECNTX(0);
+	IMP_CFIFO(MMIO) = IMP_CMD_XFRCOUNTERS(0, 0);
+}
+/* ----------------------------------------------------------------------- */
+
+
+/* ----------------------------------------------------------------------- */
+/* Accelerated functions */
+
+/**
+ * impact_fb_fillrect - draws a rectangle.
+ * @info: struct fb_info pointer to framebuffer data.
+ * @r: const struct fb_fillrect pointer to rectangle fill data.
+ */
+static void
+impact_fb_fillrect(struct fb_info *info, const struct fb_fillrect *r)
+{
+	struct impact_par *par = info->par;
+	unsigned long flags;
+
+	spin_lock_irqsave(&par->lock, flags);
+	if (!par->open_flag) {
+		switch (r->rop) {
+		case ROP_XOR:
+			impact_rect(info, r, IMP_LO_XOR);
+			break;
+		case ROP_COPY:
+		default:
+			impact_rect(info, r, IMP_LO_COPY);
+			break;
+		}
+	}
+	spin_unlock_irqrestore(&par->lock, flags);
+}
+
+/**
+ * impact_fb_copyarea - copy data from one area to another.
+ * @info: struct fb_info pointer to framebuffer data.
+ * @area: const struct fb_copyarea pointer to area data.
+ */
+static void
+impact_fb_copyarea(struct fb_info *info, const struct fb_copyarea *area)
+{
+	u32 th;
+	struct fb_copyarea tmp, new;
+	struct impact_par *par = info->par;
+	unsigned long flags;
+
+	if ((area->width < 1) || (area->height < 1))
+		return;
+
+	tmp.width = area->width;
+	tmp.height = area->height;
+
+	spin_lock_irqsave(&par->lock, flags);
+	if (par->open_flag)
+		goto out;
+
+	tmp.sx = area->sx;
+	tmp.sy = (0x3ff - ((area->sy + tmp.height) - 1));
+	tmp.dx = area->dx;
+	tmp.dy = (0x3ff - ((area->dy + tmp.height) - 1));
+	th = (par->kpool_size[0] / (tmp.width * 4));
+
+	IMP_CFIFO(MMIO) = IMP_CMD_XYWIN(0, 0);
+	if (tmp.dy > tmp.sy) {
+		tmp.dy += tmp.height;
+		tmp.sy += tmp.height;
+		while (tmp.height > 0) {
+			new = tmp;
+			new.height = ((th > tmp.height) ? tmp.height : th);
+			new.sy -= new.height;
+			new.dy -= new.height;
+			impact_smallcopy(info, &new);
+			tmp.dy -= new.height;
+			tmp.sy -= new.height;
+			tmp.height -= new.height;
+		}
+	} else {
+		while (tmp.height > 0) {
+			new = tmp;
+			new.height = ((th > tmp.height) ? tmp.height : th);
+			impact_smallcopy(info, &new);
+			tmp.dy += new.height;
+			tmp.sy += new.height;
+			tmp.height -= new.height;
+		}
+	}
+	IMP_CFIFO(MMIO) = IMP_CMD_PIXCMD(0);
+	IMP_CFIFO(MMIO) = IMP_CMD_HQ_PIXELFORMAT(0xe00);
+	IMP_CFIFO(MMIO) = IMP_CMD_CONFIG(0xcac);
+	IMP_CFIFO(MMIO) = IMP_CMD_XYWIN(0, 0x3ff);
+
+out:
+	spin_unlock_irqrestore(&par->lock, flags);
+}
+
+/**
+ * impact_fb_imageblit_8bpp - draw 8bpp blits (?).
+ * @info: struct fb_info pointer to framebuffer data.
+ * @img: const struct fb_image pointer to image data.
+ *
+ * 8-bpp blits are done as PIO draw operations; the pixels are unpacked
+ * into 32-bpp values from the current palette in software.
+ */
+static void
+impact_fb_imageblit_8bpp(struct fb_info *info, const struct fb_image *img)
+{
+	bool bit;
+	int i, u, v;
+	const u8 *dp;
+	u32 pix, pal[256];
+
+	/* Setup PIO to RE. */
+	impact_wait_cfifo_empty(info);
+	IMP_CFIFO(MMIO) = IMP_CMD_PP1FILLMODE(0x6300, IMP_LO_COPY);
+	IMP_CFIFO(MMIO) = IMP_CMD_BLOCKXYSTARTI(img->dx, img->dy);
+	IMP_CFIFO(MMIO) = IMP_CMD_BLOCKXYENDI(((img->dx + img->width) - 1),
+					      ((img->dy + img->height) - 1));
+	IMP_CFIFO(MMIO) = IMP_CMD_FILLMODE(0x00c00000);
+	IMP_CFIFO(MMIO) = IMP_CMD_XFRMODE(0x00080);
+	IMP_CFIFO(MMIO) = IMP_CMD_XFRSIZE(img->width, img->height);
+	IMP_CFIFO(MMIO) = IMP_CMD_XFRCOUNTERS(img->width, img->height);
+	IMP_CFIFO(MMIO) = IMP_CMD_GLINE_XSTARTF(1);
+	IMP_CFIFO(MMIO) = IMP_CMD_IR_ALIAS(0x18);
+
+	/* XXX: Another workaround, 33 writes to alpha. */
+	for (i = 0; i < ALPHA_WAR; i++)
+		IMP_CFIFO(MMIO) = IMP_CMD_ALPHA(0);
+	IMP_CFIFO(MMIO) = IMP_CMD_XFRCONTROL(2);
+
+	/* Pairs of pixels are sent in two writes to the RE. */
+	bit = false;
+	dp = img->data;
+	for (v = 0; v < 256; v++)
+		pal[v] = ((u32 *)info->pseudo_palette)[v];
+	for (v = 0; v < img->height; v++) {
+		for (u = 0; u < img->width; u++) {
+			pix = pal[*(dp++)];
+			if (bit)
+				IMP_CFIFO(MMIO) = IMP_CMD_CHAR_L(pix);
+			else
+				IMP_CFIFO(MMIO) = IMP_CMD_CHAR_H(pix);
+			bit ^= true;
+		}
+	}
+	if (bit)
+		IMP_CFIFO(MMIO) = IMP_CMD_CHAR_L(0);
+
+	IMP_CFIFO(MMIO) = IMP_CMD_GLINE_XSTARTF(0);
+	IMP_CFIFO(MMIO) = IMP_CMD_RE_TOGGLECNTX(0);
+	IMP_CFIFO(MMIO) = IMP_CMD_XFRCOUNTERS(0, 0);
+}
+
+/**
+ * impact_fb_imageblit_1bpp - draw 1bpp blits (?).
+ * @info: struct fb_info pointer to framebuffer data.
+ * @img: const struct fb_image pointer to image data.
+ *
+ * 1-bpp blits are done as character drawing; the bitmaps are drawn as
+ * 8-bit wide strips; technically, Impact supports 16-pixel wide characters,
+ * but Linux bitmap alignment is 8 bits and most draws are 8 pixels wide
+ * (font width), anyway.
+ */
+static void
+impact_fb_imageblit_1bpp(struct fb_info *info, const struct fb_image *img)
+{
+	u32 x, y, w, h, b;
+	int u, v, a;
+	const u8 *d;
+
+	impact_wait_cfifo_empty(info);
+	IMP_CFIFO(MMIO) = IMP_CMD_PP1FILLMODE(0x6300, IMP_LO_COPY);
+	IMP_CFIFO(MMIO) = IMP_CMD_FILLMODE(0x400018);
+
+	a = ((u32 *)info->pseudo_palette)[img->fg_color];
+	IMP_CFIFO(MMIO) = IMP_CMD_PACKEDCOLOR(a);
+
+	a = ((u32 *)info->pseudo_palette)[img->bg_color];
+	IMP_CFIFO(MMIO) = IMP_CMD_BKGRD_RG(a & 0xffff);
+	IMP_CFIFO(MMIO) = IMP_CMD_BKGRD_BA((a & 0xff0000) >> 16);
+
+	x = img->dx;
+	y = img->dy;
+	w = img->width;
+	h = img->height;
+	b = ((w + 7) / 8);
+	for (u = 0; u < b; u++) {
+		impact_wait_cfifo_empty(info);
+		a = ((w < 8) ? w : 8);
+		d = (img->data + u);
+
+		IMP_CFIFO(MMIO) = IMP_CMD_BLOCKXYSTARTI(x, y);
+		IMP_CFIFO(MMIO) = IMP_CMD_BLOCKXYENDI(((x + a) - 1),
+						      ((y + h) - 1));
+		IMP_CFIFO(MMIO) = IMP_CMD_IR_ALIAS(0x18);
+
+		for (v = 0; v < h; v++) {
+			IMP_CFIFO(MMIO) = IMP_CMD_CHAR((*d) << 24);
+			d += b;
+		}
+
+		w -= a;
+		x += a;
+	}
+}
+
+/**
+ * impact_fb_imageblit - draws a image to the display.
+ * @info: struct fb_info pointer to framebuffer data.
+ * @img: const struct fb_image pointer to image data.
+ */
+static void
+impact_fb_imageblit(struct fb_info *info, const struct fb_image *img)
+{
+	struct impact_par *par = info->par;
+	unsigned long flags;
+
+	spin_lock_irqsave(&par->lock, flags);
+	if (!par->open_flag) {
+		switch (img->depth) {
+		case 1:
+			impact_fb_imageblit_1bpp(info, img);
+			break;
+		case 8:
+			impact_fb_imageblit_8bpp(info, img);
+			break;
+		}
+	}
+	spin_unlock_irqrestore(&par->lock, flags);
+}
+
+/**
+ * impact_fb_sync - wait for blit idle (unimplemented).
+ * @info: struct fb_info pointer to framebuffer data.
+ *
+ * Returns 0.
+ */
+static int
+impact_fb_sync(struct fb_info *info)
+{
+	return 0;
+}
+
+/**
+ * impact_fb_blank - blank the display.
+ * @blank_mode: specifies the blanking mode.
+ * @info: struct fb_info pointer to framebuffer data.
+ */
+static int
+impact_fb_blank(int blank_mode, struct fb_info *info)
+{
+	switch (blank_mode) {
+	case FB_BLANK_UNBLANK:		/* Unblanking */
+		IMP_REG8(MMIO, 0x61811) = 4;
+		IMP_REG8(MMIO, 0x61910) = 0xff;
+		IMP_REG8(MMIO, 0x60d88) = 3;
+		break;
+	case FB_BLANK_NORMAL:		/* Normal blanking */
+	case FB_BLANK_VSYNC_SUSPEND:	/* VESA blank (vsync off) */
+	case FB_BLANK_HSYNC_SUSPEND:	/* VESA blank (hsync off) */
+	case FB_BLANK_POWERDOWN:	/* Poweroff */
+		IMP_REG8(MMIO, 0x61811) = 4;
+		IMP_REG8(MMIO, 0x61910) = 0;
+		IMP_REG8(MMIO, 0x60d88) = 1;
+		break;
+	}
+
+	return 0;
+}
+
+/**
+ * impact_fb_setcolreg - set the specified color register.
+ * @regno: register number.
+ * @r: red value.
+ * @g: green value.
+ * @b: blue value.
+ * @a: alpha value.
+ * @info: struct fb_info pointer to framebuffer data.
+ */
+static int
+impact_fb_setcolreg(u32 regno, u32 r, u32 g, u32 b, u32 a,
+		    struct fb_info *info)
+{
+	if (regno > 255)
+		return 1;
+
+	((u32 *)info->pseudo_palette)[regno] =
+		(r >> 8) | (g & 0x00ff00) | ((b << 8) & 0xff0000);
+	return 0;
+}
+/* ----------------------------------------------------------------------- */
+
+
+/* ----------------------------------------------------------------------- */
+/* Framebuffer access */
+
+/**
+ * impact_fb_read - read from the framebuffer (unimplemented).
+ * @info: struct fb_info pointer to framebuffer data.
+ * @buf: s8 pointer to buffer.
+ * @count: bytes of data to read.
+ * @ppos: loff_t pointer to ??.
+ */
+static ssize_t
+impact_fb_read(struct fb_info *info, char *buf, size_t count, loff_t *ppos)
+{
+	return -EINVAL;
+}
+
+/**
+ * impact_fb_write - write to the framebuffer (unimplemented).
+ * @info: struct fb_info pointer to framebuffer data.
+ * @buf: const s8 pointer to buffer.
+ * @count: bytes of data to write.
+ * @ppos: loff_t pointer to ??.
+ */
+static ssize_t
+impact_fb_write(struct fb_info *info, const char *buf, size_t count,
+		loff_t *ppos)
+{
+	return -EINVAL;
+}
+/* ----------------------------------------------------------------------- */
+
+
+/* ----------------------------------------------------------------------- */
+/* Userland access */
+
+/**
+ * impact_fb_ioctl - framebuffer ioctl() access (unimplemented).
+ * @info: struct fb_info pointer to framebuffer data.
+ * @cmd: ioctl command.
+ * @arg: ioctl argument.
+ */
+static int
+impact_fb_ioctl(struct fb_info *info, u32 cmd, unsigned long arg)
+{
+	return -EINVAL;
+}
+/* ----------------------------------------------------------------------- */
+
+
+/* ----------------------------------------------------------------------- */
+/* Mmap/open/release. */
+
+/**
+ * impact_fb_mmap - framebuffer ioctl() access (unimplemented).
+ * @info: struct fb_info pointer to framebuffer data.
+ * @vma: struct vm_area_struct pointer for virtual memory info.
+ */
+static int
+impact_fb_mmap(struct fb_info *info, struct vm_area_struct *vma)
+{
+	int ret;
+	u32 pool, i, n;
+	unsigned long size = (vma->vm_end - vma->vm_start);
+	unsigned long offset = (vma->vm_pgoff << PAGE_SHIFT);
+	unsigned long start = vma->vm_start;
+	unsigned long pfn;
+	struct impact_par *par = info->par;
+
+	switch (offset) {
+	case 0x0000000:
+	default:
+		if (unlikely((offset + size) > 0x200000))
+			return -EINVAL;
+
+		if (unlikely(vma->vm_pgoff > (~0UL >> PAGE_SHIFT)))
+			return -EINVAL;
+
+		vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
+		vma->vm_flags |= VM_IO;
+		pfn = ((par->mmio_base + offset) >> PAGE_SHIFT);
+		ret = remap_pfn_range(vma, vma->vm_start, pfn, size,
+				      vma->vm_page_prot);
+		if (unlikely(ret))
+			return -EAGAIN;
+		break;
+	case 0x1000000:
+	case 0x2000000:
+	case 0x3000000:
+	case 0x8000000:
+	case 0x9000000:
+	case 0xa000000:
+	case 0xb000000:
+		if (unlikely(size > 0x1000000))
+			return -EINVAL;
+
+		pool = ((offset >> 24) & 3);
+		n = (((size + PAGE_SIZE) - 1) >> PAGE_SHIFT);
+
+		if ((n * PAGE_SIZE) != par->kpool_size[pool])
+			impact_resize_kpool(info, pool, size,
+					    (offset & 0x8000000));
+		for (i = 0; i < n; i++) {
+			pfn = (par->kpool_phys[pool][i] >> PAGE_SHIFT);
+			ret = remap_pfn_range(vma, start, pfn, PAGE_SIZE,
+					      vma->vm_page_prot);
+			if (unlikely(ret))
+				return -EAGAIN;
+			start += PAGE_SIZE;
+		}
+	}
+
+	return 0;
+}
+
+/**
+ * impact_fb_open - framebuffer open().
+ * @info: struct fb_info pointer to framebuffer data.
+ * @user: flag to indicate usermode access.
+ */
+static int
+impact_fb_open(struct fb_info *info, int user)
+{
+	struct impact_par *par = info->par;
+	unsigned long flags;
+
+	spin_lock_irqsave(&par->lock, flags);
+	if (user)
+		par->open_flag++;
+	spin_unlock_irqrestore(&par->lock, flags);
+
+	return 0;
+}
+
+/**
+ * impact_fb_release - framebuffer release().
+ * @info: struct fb_info pointer to framebuffer data.
+ * @user: flag to indicate usermode access.
+ */
+static int
+impact_fb_release(struct fb_info *info, int user)
+{
+	struct impact_par *par = info->par;
+	unsigned long flags;
+
+	spin_lock_irqsave(&par->lock, flags);
+	if (user && par->open_flag)
+		par->open_flag--;
+	spin_unlock_irqrestore(&par->lock, flags);
+
+	return 0;
+}
+/* ----------------------------------------------------------------------- */
+
+
+/* ----------------------------------------------------------------------- */
+/* Impact framebuffer operations */
+
+static struct
+fb_ops impact_ops = {
+	.owner		= THIS_MODULE,
+	.fb_read	= impact_fb_read,
+	.fb_write	= impact_fb_write,
+	.fb_blank	= impact_fb_blank,
+	.fb_fillrect	= impact_fb_fillrect,
+	.fb_copyarea	= impact_fb_copyarea,
+	.fb_imageblit	= impact_fb_imageblit,
+	.fb_sync	= impact_fb_sync,
+	.fb_ioctl	= impact_fb_ioctl,
+	.fb_setcolreg	= impact_fb_setcolreg,
+	.fb_mmap	= impact_fb_mmap,
+	.fb_open	= impact_fb_open,
+	.fb_release	= impact_fb_release,
+};
+/* ----------------------------------------------------------------------- */
+
+
+/* ----------------------------------------------------------------------- */
+/* Hardware initialization */
+
+/**
+ * impact_inithq - init impact HQ3/4.
+ * @info: struct fb_info pointer to framebuffer data.
+ */
+static inline void __init
+impact_inithq(struct fb_info *info)
+{
+	/* Not really needed, the friendly PROM did this already for us... */
+	/* CFIFO parameters */
+	IMP_CFIFO_HW(MMIO) = VAL_CFIFO_HW;
+	IMP_CFIFO_LW(MMIO) = VAL_CFIFO_LW;
+	IMP_CFIFO_DELAY(MMIO) = VAL_CFIFO_DELAY;
+
+	/* DFIFO parameters */
+	IMP_DFIFO_HW(MMIO) = VAL_DFIFO_HW;
+	IMP_DFIFO_LW(MMIO) = VAL_DFIFO_LW;
+	IMP_DFIFO_DELAY(MMIO) = VAL_DFIFO_DELAY;
+}
+
+/**
+ * impact_initrss - init impact RSS.
+ * @info: struct fb_info pointer to framebuffer data.
+ */
+static inline void __init
+impact_initrss(struct fb_info *info)
+{
+	/* Transfer mask registers. */
+	IMP_CFIFO(MMIO) = IMP_CMD_COLORMASKLSBSA(0xffffff);
+	IMP_CFIFO(MMIO) = IMP_CMD_COLORMASKLSBSB(0xffffff);
+	IMP_CFIFO(MMIO) = IMP_CMD_COLORMASKMSBS(0);
+	IMP_CFIFO(MMIO) = IMP_CMD_XFRMASKLO(0xffffff);
+	IMP_CFIFO(MMIO) = IMP_CMD_XFRMASKHI(0xffffff);
+
+	/* Use the main plane. */
+	IMP_CFIFO(MMIO) = IMP_CMD_DRBPOINTERS(0xc8240);
+
+	/* Set the RE into vertical flip mode. */
+	IMP_CFIFO(MMIO) = IMP_CMD_CONFIG(0xcac);
+	IMP_CFIFO(MMIO) = IMP_CMD_XYWIN(0, 0x3ff);
+}
+
+/**
+ * impact_initxmap - init impact XMAP.
+ * @info: struct fb_info pointer to framebuffer data.
+ */
+static inline void __init
+impact_initxmap(struct fb_info *info)
+{
+	/* Set XMAP into 24-bpp mode. */
+	IMP_XMAP_PP1SELECT(MMIO) = 0x01;
+	IMP_XMAP_INDEX(MMIO) = 0x00;
+	IMP_XMAP_MAIN_MODE(MMIO) = 0x07a4;
+}
+
+/**
+ * impact_initvc3 - init impact VC3.
+ * @info: struct fb_info pointer to framebuffer data.
+ */
+static inline void __init
+impact_initvc3(struct fb_info *info)
+{
+	/* Cursor Begone! (disable DISPLAY bit) */
+	IMP_VC3_INDEXDATA(MMIO) = 0x1d000100;
+}
+
+/**
+ * impact_hw_init - init impact hardware.
+ * @info: struct fb_info pointer to framebuffer data.
+ */
+static inline void __init
+impact_hw_init(struct fb_info *info)
+{
+	/* initialize hardware */
+	impact_inithq(info);
+	impact_initvc3(info);
+	impact_initrss(info);
+	impact_initxmap(info);
+	impact_initdma(info);
+}
+/* ----------------------------------------------------------------------- */
+
+
+/* ----------------------------------------------------------------------- */
+/* XIO/GIO Probing - a bit ugly... */
+
+/**
+ * impact_common_probe - probe code common to both XIO/GIO buses.
+ * @info: struct fb_info pointer to framebuffer data.
+ * @par: struct impact_par pointer to impact data.
+ */
+static int
+impact_common_probe(struct fb_info *info, struct impact_par *par)
+{
+	int i, ret;
+
+	/* Set defaults. */
+	info->screen_base = NULL;
+	info->fbops = &impact_ops;
+	info->var = impact_var_default;
+	info->fix = impact_fix_default;
+	info->flags =  (FBINFO_HWACCEL_COPYAREA |
+			FBINFO_HWACCEL_FILLRECT |
+			FBINFO_HWACCEL_IMAGEBLIT);
+	info->pseudo_palette = par->pseudo_palette;
+	info->fix.mmio_start = par->mmio_base;
+	info->fix.mmio_len   = 0x200000;
+
+	/* Get board config. */
+	par->num_ge = IMP_BDVERS1(par->mmio_virt) & 3;
+	par->num_rss = par->num_ge;
+	info->fix.id[9] = '0' + par->num_rss;
+
+	/* Init hardware. */
+	impact_hw_init(info);
+
+	/* Initialize kpools. */
+	impact_resize_kpool(info, 0, 65536, false);
+	for (i = 1; i < USE_POOLS; ++i)
+		impact_resize_kpool(info, i, 8192, false);
+
+	/* Alloc cmap. */
+	ret = fb_alloc_cmap(&info->cmap, 256, 0);
+	if (ret)
+		goto err_alloc_cmap;
+
+	/* Register framebuffer. */
+	ret = register_framebuffer(info);
+	if (ret)
+		goto err_reg_fb;
+
+	pr_info("fb%d: %s frame buffer device\n", info->node, info->fix.id);
+	return 0;
+
+err_reg_fb:
+	fb_dealloc_cmap(&info->cmap);
+err_alloc_cmap:
+	framebuffer_release(info);
+	return ret;
+}
+
+#ifndef SGI_INDIGO2
+/**
+ * impact_xio_probe - probe for impact card on XIO bus.
+ * @dev: struct platform_device pointer to device information.
+ */
+static int
+impact_xio_probe(struct platform_device *dev)
+{
+	int ret;
+	struct fb_info *info = NULL;
+	struct impact_par *par = NULL;
+
+	info = framebuffer_alloc(sizeof(struct impact_par), &dev->dev);
+	if (!info)
+		return -ENOMEM;
+
+	par = info->par;
+	par->dev = &dev->dev;
+	par->dev->coherent_dma_mask = ~0;
+	par->open_flag = 0;
+	spin_lock_init(&par->lock);
+
+	par->mmio_base = xtalk_get_swin(0, dev->id);
+	par->mmio_virt = ioremap(par->mmio_base, 0x200000);
+
+	ret = impact_common_probe(info, par);
+	platform_set_drvdata(dev, info);
+
+	return ret;
+}
+
+static struct platform_driver
+impact_driver = {
+	.probe = impact_xio_probe,
+	/* add remove someday */
+	.driver = {
+		.name = "impact",
+	},
+};
+
+static int __init
+impact_init(void)
+{
+	return platform_driver_register(&impact_driver);
+}
+
+static void __exit
+impact_exit(void)
+{
+	platform_driver_unregister(&impact_driver);
+}
+
+MODULE_ALIAS("platform:impact");
+
+#else /* SGI_INDIGO2 */
+
+/**
+ * impact_gio_probe - probe for impact card on GIO bus.
+ * @dev: struct gio_device pointer to device information.
+ * @id: const struct gio_device_id pointer to GIO dev id.
+ */
+static int
+impact_gio_probe(struct gio_device *dev, const struct gio_device_id *id)
+{
+	int ret;
+	struct fb_info *info;
+	struct impact_par *par;
+
+	if (!dev->resource.start)
+		return -EINVAL;
+
+	if (!request_mem_region(dev->resource.start, 0x200000, "Impact"))
+		return -ENODEV;
+
+	info = framebuffer_alloc(sizeof(struct impact_par), &dev->dev);
+	if (!info)
+		return -ENOMEM;
+
+	par = info->par;
+	par->dev = &dev->dev;
+	par->dev->coherent_dma_mask = ~0;
+	par->open_flag = 0;
+	spin_lock_init(&par->lock);
+
+	par->mmio_base = dev->resource.start;
+	par->mmio_virt = ioremap(par->mmio_base, 0x200000);
+	gio_set_master(dev);
+
+	ret = impact_common_probe(info, par);
+
+	return ret;
+}
+
+static struct gio_device_id
+impact_ids[] = {
+	{ .id = 0x10 },
+	{ .id = 0xff }
+};
+
+static struct gio_driver
+impact_driver = {
+	.name = "impact",
+	.id_table = impact_ids,
+	.probe = impact_gio_probe,
+	/* add remove someday */
+};
+
+static int __init
+impact_init(void)
+{
+	return gio_register_driver(&impact_driver);
+}
+
+static void __exit
+impact_exit(void)
+{
+	 gio_unregister_driver(&impact_driver);
+}
+
+MODULE_ALIAS("gio:impact");
+
+#endif /* SGI_INDIGO2 */
+/* ----------------------------------------------------------------------- */
+
+
+module_init(impact_init);
+module_exit(impact_exit);
+
+MODULE_AUTHOR("Stanislaw Skowronek <skylark@unaligned.org>");
+MODULE_AUTHOR("Johannes Dickgreber <tanzy@gmx.de>");
+MODULE_AUTHOR("Joshua Kinard <kumba@gentoo.org>");
+MODULE_DESCRIPTION("SGI Impact/MardiGras Video Driver");
+MODULE_LICENSE("GPL");
+MODULE_VERSION("0.42.3");
diff --git a/include/uapi/linux/fb.h b/include/uapi/linux/fb.h
index 6cd9b198b7c6..2ebb46eaccfd 100644
--- a/include/uapi/linux/fb.h
+++ b/include/uapi/linux/fb.h
@@ -133,6 +133,7 @@
 #define FB_ACCEL_NEOMAGIC_NM2360 97	/* NeoMagic NM2360              */
 #define FB_ACCEL_NEOMAGIC_NM2380 98	/* NeoMagic NM2380              */
 #define FB_ACCEL_PXA3XX		 99	/* PXA3xx			*/
+#define FB_ACCEL_SGI_IMPACT	666	/* SGI Impact (MGRAS)		*/
 
 #define FB_ACCEL_SAVAGE4        0x80	/* S3 Savage4                   */
 #define FB_ACCEL_SAVAGE3D       0x81	/* S3 Savage3D                  */
diff --git a/include/video/impact.h b/include/video/impact.h
new file mode 100644
index 000000000000..2efa228fc6d9
--- /dev/null
+++ b/include/video/impact.h
@@ -0,0 +1,337 @@
+/*
+ * linux/drivers/video/impact.h
+ *   SGI Octane MardiGras (IMPACTSR) graphics
+ *   SGI Indigo2 MardiGras (IMPACT) graphics
+ *
+ * Copyright (c)
+ *   2004-2006 by Stanislaw Skowronek <skylark@unaligned.org> (author)
+ *   2005 by Peter Fuerst <post@pfrst.de> (Indigo2 adaptation)
+ *   2007-2009 by Johannes Dickgreber <tanzy@gmx.de> (platform_driver)
+ *   2014 by Thomas Bogendoerfer <tsbogend@alpha.franken.de> (gio_driver)
+ *   2011-2015 by Joshua Kinard <kumba@gentoo.org> (upkeeping/maintenance)
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file COPYING in the main directory of this archive for
+ * more details.
+ */
+
+#ifndef _IMPACT_H
+#define _IMPACT_H
+
+/* IP22/IP28 have HQ3, IP30 has HQ4. */
+#if defined(CONFIG_SGI_IP22) || defined(CONFIG_SGI_IP28)
+#define SGI_INDIGO2 1
+#else
+#undef SGI_INDIGO2
+#endif
+
+/* Some fixed register values. */
+#ifndef SGI_INDIGO2
+ /* ImpactSR (HQ4) registers */
+ #define VAL_CFIFO_HW			0x47
+ #define VAL_CFIFO_LW			0x14
+ #define VAL_CFIFO_DELAY		0x64
+ #define VAL_DFIFO_HW			0x40
+ #define VAL_DFIFO_LW			0x10
+ #define VAL_DFIFO_DELAY		0
+ #define MSK_CFIFO_CNT			0xff
+ #define USEPOOLS			5
+ #define MMIO_FIXED			0x900000001c000000
+#else
+ /* Impact (HQ3) registers */
+ #define VAL_CFIFO_HW			0x20 /* 0x18 ? */
+ #define VAL_CFIFO_LW			0x14
+ #define VAL_CFIFO_DELAY		0x64
+ #define VAL_DFIFO_HW			0x28
+ #define VAL_DFIFO_LW			0x14
+ #define VAL_DFIFO_DELAY		0xfff
+ #define MSK_CFIFO_CNT			0x7f
+ #define USEPOOLS			4
+ #define MMIO_FIXED			0x900000001f000000
+#endif
+
+/* Convenient access macros */
+#define IMP_REG64(vma, off)		(*(volatile u64 *)((vma) + (off)))
+#define IMP_REG32(vma, off)		(*(volatile u32 *)((vma) + (off)))
+#define IMP_REG16(vma, off)		(*(volatile u16 *)((vma) + (off)))
+#define IMP_REG8(vma, off)		(*(volatile u8 *)((vma) + (off)))
+
+#ifndef SGI_INDIGO2
+ /* ImpactSR (HQ4) register offsets */
+ #define IMP_CFIFO(vma)			IMP_REG64(vma, 0x020400)
+ #define IMP_CFIFOW(vma)		IMP_REG32(vma, 0x020400)
+ #define IMP_CFIFOW1(vma)		IMP_REG32(vma, 0x020404)
+ #define IMP_CFIFOP(vma)		IMP_REG64(vma, 0x130400)
+ #define IMP_CFIFOPW(vma)		IMP_REG32(vma, 0x130400)
+ #define IMP_CFIFOPW1(vma)		IMP_REG32(vma, 0x130404)
+
+ #define IMP_STATUS(vma)		IMP_REG32(vma, 0x020000)
+ #define IMP_FIFOSTATUS(vma)		IMP_REG32(vma, 0x020008)
+ #define IMP_GIOSTATUS(vma)		IMP_REG32(vma, 0x020100)
+ #define IMP_DMABUSY(vma)		IMP_REG32(vma, 0x020200)
+
+ #define IMP_CFIFO_HW(vma)		IMP_REG32(vma, 0x040000)
+ #define IMP_CFIFO_LW(vma)		IMP_REG32(vma, 0x040008)
+ #define IMP_CFIFO_DELAY(vma)		IMP_REG32(vma, 0x040010)
+ #define IMP_DFIFO_HW(vma)		IMP_REG32(vma, 0x040020)
+ #define IMP_DFIFO_LW(vma)		IMP_REG32(vma, 0x040028)
+ #define IMP_DFIFO_DELAY(vma)		IMP_REG32(vma, 0x040030)
+
+ #define IMP_XMAP_OFF(off)		(0x71c00 + (off))
+ #define IMP_VC3_OFF(off)		(0x72000 + (off))
+ #define IMP_RSS_OFF(off)		(0x2c000 + (off))
+#else
+ /* Impact (HQ3) register offsets */
+ #define IMP_CFIFO(vma)			IMP_REG64(vma, 0x070080)
+ #define IMP_CFIFOW(vma)		IMP_REG32(vma, 0x070080)
+ #define IMP_CFIFOW1(vma)		IMP_REG32(vma, 0x070084)
+ #define IMP_CFIFOP(vma)		IMP_REG64(vma, 0x050080)
+ #define IMP_CFIFOPW(vma)		IMP_REG32(vma, 0x050080)
+ #define IMP_CFIFOPW1(vma)		IMP_REG32(vma, 0x050084)
+
+ #define IMP_STATUS(vma)		IMP_REG32(vma, 0x070000)
+ #define IMP_FIFOSTATUS(vma)		IMP_REG32(vma, 0x070004)
+ #define IMP_GIOSTATUS(vma)		IMP_REG32(vma, 0x070100)
+ #define IMP_DMABUSY(vma)		IMP_REG32(vma, 0x070104)
+
+ #define IMP_CFIFO_HW(vma)		IMP_REG32(vma, 0x050020)
+ #define IMP_CFIFO_LW(vma)		IMP_REG32(vma, 0x050024)
+ #define IMP_CFIFO_DELAY(vma)		IMP_REG32(vma, 0x050028)
+ #define IMP_DFIFO_HW(vma)		IMP_REG32(vma, 0x05002c)
+ #define IMP_DFIFO_LW(vma)		IMP_REG32(vma, 0x050030)
+ #define IMP_DFIFO_DELAY(vma)		IMP_REG32(vma, 0x050034)
+
+ #define IMP_XMAP_OFF(off)		(0x61c00 + (off))
+ #define IMP_VC3_OFF(off)		(0x62000 + (off))
+ #define IMP_RSS_OFF(off)		(0x7c000 + (off))
+#endif
+
+#define IMP_RESTATUS(vma)		IMP_REG32(vma, IMP_RSS_OFF(0x578))
+
+#define IMP_XMAP_PP1SELECT(vma)		IMP_REG8(vma, IMP_XMAP_OFF(0x008))
+#define IMP_XMAP_INDEX(vma)		IMP_REG8(vma, IMP_XMAP_OFF(0x088))
+#define IMP_XMAP_CONFIG(vma)		IMP_REG32(vma, IMP_XMAP_OFF(0x100))
+#define IMP_XMAP_CONFIGB(vma)		IMP_REG8(vma, IMP_XMAP_OFF(0x108))
+#define IMP_XMAP_BUF_SELECT(vma)	IMP_REG32(vma, IMP_XMAP_OFF(0x180))
+#define IMP_XMAP_MAIN_MODE(vma)		IMP_REG32(vma, IMP_XMAP_OFF(0x200))
+#define IMP_XMAP_OVERLAY_MODE(vma)	IMP_REG32(vma, IMP_XMAP_OFF(0x280))
+#define IMP_XMAP_DIB(vma)		IMP_REG32(vma, IMP_XMAP_OFF(0x300))
+#define IMP_XMAP_DIB_DW(vma)		IMP_REG32(vma, IMP_XMAP_OFF(0x340))
+#define IMP_XMAP_RE_RAC(vma)		IMP_REG32(vma, IMP_XMAP_OFF(0x380))
+
+#define IMP_VC3_INDEX(vma)		IMP_REG8(vma, IMP_VC3_OFF(0x008))
+#define IMP_VC3_INDEXDATA(vma)		IMP_REG32(vma, IMP_VC3_OFF(0x038))
+#define IMP_VC3_DATA(vma)		IMP_REG16(vma, IMP_VC3_OFF(0x0b0))
+#define IMP_VC3_RAM(vma)		IMP_REG16(vma, IMP_VC3_OFF(0x190))
+
+#define IMP_BDVERS0(vma)		IMP_REG8(vma, IMP_VC3_OFF(0x408))
+#define IMP_BDVERS1(vma)		IMP_REG8(vma, IMP_VC3_OFF(0x488))
+
+
+/* FIFO status */
+#ifdef SGI_INDIGO2
+  #define IMP_CFIFO_MAX		64
+#else
+  #define IMP_CFIFO_MAX		128
+#endif
+#define IMP_BFIFO_MAX		16
+
+
+/* Commands for CFIFO */
+#define IMP_CMD_WRITERSS(reg, val)				\
+	(((0x00180004L | ((reg) << 8)) << 32) | ((u32)(val) & 0xffffffff))
+
+#define IMP_CMD_EXECRSS(reg, val)				\
+	(((0x001c0004L | ((reg) << 8)) << 32) | ((u32)(val) & 0xffffffff))
+
+#define IMP_CMD_GLINE_XSTARTF(v)	IMP_CMD_WRITERSS(0x00c, v)
+#define IMP_CMD_IR_ALIAS(v)		IMP_CMD_EXECRSS(0x045, v)
+#define IMP_CMD_BLOCKXYSTARTI(x, y)	IMP_CMD_WRITERSS(0x046, ((x) << 16) | (y))
+#define IMP_CMD_BLOCKXYENDI(x, y)	IMP_CMD_WRITERSS(0x047, ((x) << 16) | (y))
+#define IMP_CMD_PACKEDCOLOR(v)		IMP_CMD_WRITERSS(0x05b, v)
+#define IMP_CMD_RED(v)			IMP_CMD_WRITERSS(0x05c, v)
+#define IMP_CMD_ALPHA(v)		IMP_CMD_WRITERSS(0x05f, v)
+#define IMP_CMD_CHAR(v)			IMP_CMD_EXECRSS(0x070, v)
+#define IMP_CMD_CHAR_H(v)		IMP_CMD_WRITERSS(0x070, v)
+#define IMP_CMD_CHAR_L(v)		IMP_CMD_EXECRSS(0x071, v)
+#define IMP_CMD_XFRCONTROL(v)		IMP_CMD_WRITERSS(0x102, v)
+#define IMP_CMD_FILLMODE(v)		IMP_CMD_WRITERSS(0x110, v)
+#define IMP_CMD_CONFIG(v)		IMP_CMD_WRITERSS(0x112, v)
+#define IMP_CMD_XYWIN(x, y)		IMP_CMD_WRITERSS(0x115, ((y) << 16) | (x))
+#define IMP_CMD_BKGRD_RG(v)		IMP_CMD_WRITERSS(0x140, ((v) << 8))
+#define IMP_CMD_BKGRD_BA(v)		IMP_CMD_WRITERSS(0x141, ((v) << 8))
+#define IMP_CMD_WINMODE(v)		IMP_CMD_WRITERSS(0x14f, v)
+#define IMP_CMD_XFRSIZE(x, y)		IMP_CMD_WRITERSS(0x153, ((y) << 16) | (x))
+#define IMP_CMD_XFRMASKLO(v)		IMP_CMD_WRITERSS(0x156, v)
+#define IMP_CMD_XFRMASKHI(v)		IMP_CMD_WRITERSS(0x157, v)
+#define IMP_CMD_XFRCOUNTERS(x, y)	IMP_CMD_WRITERSS(0x158, ((y) << 16) | (x))
+#define IMP_CMD_XFRMODE(v)		IMP_CMD_WRITERSS(0x159, v)
+#define IMP_CMD_RE_TOGGLECNTX(v)	IMP_CMD_WRITERSS(0x15f, v)
+#define IMP_CMD_PIXCMD(v)		IMP_CMD_WRITERSS(0x160, v)
+#define IMP_CMD_PP1FILLMODE(m, o)	IMP_CMD_WRITERSS(0x161, (m) | (o << 26))
+#define IMP_CMD_COLORMASKMSBS(v)	IMP_CMD_WRITERSS(0x162, v)
+#define IMP_CMD_COLORMASKLSBSA(v)	IMP_CMD_WRITERSS(0x163, v)
+#define IMP_CMD_COLORMASKLSBSB(v)	IMP_CMD_WRITERSS(0x164, v)
+#define IMP_CMD_BLENDFACTOR(v)		IMP_CMD_WRITERSS(0x165, v)
+#define IMP_CMD_DRBPOINTERS(v)		IMP_CMD_WRITERSS(0x16d, v)
+
+#define IMP_UNSIGNED(v)			((unsigned)(v) & 0xffffffff)
+
+#define	IMP_CMD_HQ_PIXELFORMAT(v)	(0x000c000400000000L | IMP_UNSIGNED(v))
+#define	IMP_CMD_HQ_SCANWIDTH(v)		(0x000a020400000000L | IMP_UNSIGNED(v))
+#define	IMP_CMD_HQ_DMATYPE(v)		(0x000a060400000000L | IMP_UNSIGNED(v))
+#define	IMP_CMD_HQ_PG_LIST_0(v)		(0x0008000400000000L | IMP_UNSIGNED(v))
+#define	IMP_CMD_HQ_PG_WIDTH(v)		(0x0008040400000000L | IMP_UNSIGNED(v))
+#define	IMP_CMD_HQ_PG_OFFSET(v)		(0x0008050400000000L | IMP_UNSIGNED(v))
+#define	IMP_CMD_HQ_PG_STARTADDR(v)	(0x0008060400000000L | IMP_UNSIGNED(v))
+#define	IMP_CMD_HQ_PG_LINECNT(v)	(0x0008070400000000L | IMP_UNSIGNED(v))
+#define	IMP_CMD_HQ_PG_WIDTHA(v)		(0x0008080400000000L | IMP_UNSIGNED(v))
+#define IMP_CMD_HQ_PGSIZE(v)		(0x00482a0400000000L | IMP_UNSIGNED(v))
+#define IMP_CMD_HQ_STACKPTR(v)		(0x00483a0400000000L | IMP_UNSIGNED(v))
+#define IMP_CMD_HQ_TXBASE(p)		(0x00482008 | ((p) << 9))
+
+#define IMP_CMD_HQ_DMACTRL_0(v)		(0x00080b04000000b1L | ((v) & 8))
+
+#define IMP_CMD_HQ_TXMAX(p, v)					\
+	(0x0048300400000000L | IMP_UNSIGNED(v) |		\
+	 ((unsigned long)(p) << 40))
+
+#define IMP_CMD_HQ_PGBITS(p, v)					\
+	(0x00482b0400000000L | IMP_UNSIGNED(v) |		\
+	 ((unsigned long)(p) << 40))
+
+#define IMP_CMD_HQ_484A(p, v)					\
+	((0x00484a0400000000L + ((unsigned long)(p) << 40)) |	\
+	 IMP_UNSIGNED(v))
+
+#define IMP_CMD_HQ_484B(p, v)					\
+	((0x00484b0400000000L + ((unsigned long)(p) << 40)) |	\
+	 IMP_UNSIGNED(v))
+
+/*
+ * Logic operations for the PP1:
+ *    - SI = source invert
+ *    - DI = dest invert
+ *    - RI = result invert
+ */
+#define IMP_LO_AND			0x01
+#define IMP_LO_SI_AND			0x04
+#define IMP_LO_DI_AND			0x02
+#define IMP_LO_RI_AND			0x0e
+
+#define IMP_LO_OR			0x07
+#define IMP_LO_SI_OR			0x0d
+#define IMP_LO_DI_OR			0x0b
+#define IMP_LO_RI_OR			0x08
+
+#define IMP_LO_XOR			0x06
+#define IMP_LO_RI_XOR			0x09
+
+#define IMP_LO_NOP			0x05
+#define IMP_LO_RI_NOP			0x0a
+
+#define IMP_LO_COPY			0x03
+#define IMP_LO_RI_COPY			0x0c
+
+#define IMP_LO_CLEAR			0x00
+#define IMP_LO_SET			0x0f
+
+/* Blending factors */
+#define IMP_BLEND_ALPHA			0x0704c900
+
+
+
+/*
+ * For the future.  These will replace the above
+ * macros to make the code look more C-like.
+ */
+/*
+static inline void ImpactCFifoCmd64(unsigned long vma, unsigned cmd,
+				    unsigned reg, unsigned val)
+{
+// #if (_MIPS_SZLONG == 64) see Xmd.h
+#if 1
+	IMP_CFIFO(vma) = (unsigned long long)(cmd | reg << 8) << 32 | val;
+#else
+	IMP_CFIFOW(vma) = cmd | reg << 8;
+	IMP_CFIFOW(vma) = val;
+#endif
+}
+
+static inline void ImpactCFifoPCmd32(unsigned long vma, unsigned cmd,
+				     unsigned reg)
+{
+	IMP_CFIFOPW(vma) = cmd | reg << 8;
+}
+
+static inline void ImpactCFifoPCmd32lo(unsigned long vma, unsigned cmd,
+				       unsigned reg)
+{
+	IMP_CFIFOPW1(vma) = cmd | reg << 8;
+}
+
+static inline void ImpactCmdWriteRss(unsigned long vma, unsigned reg,
+				     unsigned val)
+{
+	ImpactCFifoCmd64(vma, 0x00180004, reg, val);
+}
+
+static inline void ImpactCmdExecRss(unsigned long vma, unsigned reg,
+				    unsigned val)
+{
+	ImpactCFifoCmd64(vma, 0x001c0004, reg, val);
+}
+
+#define impact_cmd_gline_xstartf(a, v)		ImpactCmdWriteRss(a, 0x000c, v)
+#define impact_cmd_ir_alias(a, v)		ImpactCmdExecRss(a, 0x0045, v)
+#define impact_cmd_blockxystarti(a, x, y)	ImpactCmdWriteRss(a, 0x0046, (x) << 16 | (y))
+#define impact_cmd_blockxyendi(a, x, y)		ImpactCmdWriteRss(a, 0x0047, (x) << 16 | (y))
+#define impact_cmd_packedcolor(a, v)		ImpactCmdWriteRss(a, 0x005b, v)
+#define impact_cmd_red(a, v)			ImpactCmdWriteRss(a, 0x005c, v)
+#define impact_cmd_alpha(a, v)			ImpactCmdWriteRss(a, 0x005f, v)
+#define impact_cmd_char(a, v)			ImpactCmdExecRss(a, 0x0070, v)
+#define impact_cmd_char_h(a, v)			ImpactCmdWriteRss(a, 0x0070, v)
+#define impact_cmd_char_l(a, v)			ImpactCmdExecRss(a, 0x0071, v)
+#define impact_cmd_xfrcontrol(a, v)		ImpactCmdWriteRss(a, 0x0102, v)
+#define impact_cmd_fillmode(a, v)		ImpactCmdWriteRss(a, 0x0110, v)
+#define impact_cmd_config(a, v)			ImpactCmdWriteRss(a, 0x0112, v)
+#define impact_cmd_xywin(a, x, y)		ImpactCmdWriteRss(a, 0x0115, (y) << 16 | (x))
+#define impact_cmd_bkgrd_rg(a, v)		ImpactCmdWriteRss(a, 0x0140, (v) << 8)
+#define impact_cmd_bkgrd_ba(a, v)		ImpactCmdWriteRss(a, 0x0141, (v) << 8)
+#define impact_cmd_winmode(a, v)		ImpactCmdWriteRss(a, 0x014f, v)
+#define impact_cmd_xfrsize(a, x, y)		ImpactCmdWriteRss(a, 0x0153, (y) << 16 | (x))
+#define impact_cmd_xfrmasklo(a, v)		ImpactCmdWriteRss(a, 0x0156, v)
+#define impact_cmd_xfrmaskhi(a, v)		ImpactCmdWriteRss(a, 0x0157, v)
+#define impact_cmd_xfrcounters(a, x, y)		ImpactCmdWriteRss(a, 0x0158, (y) << 16 | (x))
+#define impact_cmd_xfrmode(a, v)		ImpactCmdWriteRss(a, 0x0159, v)
+#define impact_cmd_re_togglecntx(a, v)		ImpactCmdWriteRss(a, 0x015f, v)
+#define impact_cmd_pixcmd(a, v)			ImpactCmdWriteRss(a, 0x0160, v)
+#define impact_cmd_pp1fillmode(a, m, o)		ImpactCmdWriteRss(a, 0x0161, (m) | (o) << 26)
+#define impact_cmd_colormaskmsbs(a, v)		ImpactCmdWriteRss(a, 0x0162, v)
+#define impact_cmd_colormasklsbsa(a, v)		ImpactCmdWriteRss(a, 0x0163, v)
+#define impact_cmd_colormasklsbsb(a, v)		ImpactCmdWriteRss(a, 0x0164, v)
+#define impact_cmd_blendfactor(a, v)		ImpactCmdWriteRss(a, 0x0165, v)
+#define impact_cmd_drbpointers(a, v)		ImpactCmdWriteRss(a, 0x016d, v)
+
+#define	impact_cmd_hq_pixelformat(a, v)		ImpactCFifoCmd64(a, 0x000c0004, 0, v)
+#define	impact_cmd_hq_scanwidth(a, v)		ImpactCFifoCmd64(a, 0x000a0204, 0, v)
+#define	impact_cmd_hq_dmatype(a, v)		ImpactCFifoCmd64(a, 0x000a0604, 0, v)
+#define	impact_cmd_hq_pg_list_0(a, v)		ImpactCFifoCmd64(a, 0x00080004, 0, v)
+#define	impact_cmd_hq_pg_width(a, v)		ImpactCFifoCmd64(a, 0x00080404, 0, v)
+#define	impact_cmd_hq_pg_offset(a, v)		ImpactCFifoCmd64(a, 0x00080504, 0, v)
+#define	impact_cmd_hq_pg_startaddr(a, v)	ImpactCFifoCmd64(a, 0x00080604, 0, v)
+#define	impact_cmd_hq_pg_linecnt(a, v)		ImpactCFifoCmd64(a, 0x00080704, 0, v)
+#define	impact_cmd_hq_pg_widtha(a, v)		ImpactCFifoCmd64(a, 0x00080804, 0, v)
+#define	impact_cmd_hq_dmactrl_0(a, v)		ImpactCFifoCmd64(a, 0x00080b04, 0, 0xb1 | (v) & 8)
+
+#define impact_cmd_hq_txbase(a, p)		ImpactCFifoPCmd32lo(a, (0x00482008 | (p) << 9), 0)
+#define impact_cmd_hq_txmax(a, p, v)		ImpactCFifoPCmd64(a, (0x00483004 | (p) << 8), 0, v)
+#define impact_cmd_hq_pgbits(a, p, v)		ImpactCFifoPCmd64(a, (0x00482b04 + ((p) << 8)), 0, v)
+#define impact_cmd_hq_pgsize(a, v)		ImpactCFifoPCmd64(a, 0x00482a04, 0, v)
+#define impact_cmd_hq_stackptr(a, v)		ImpactCFifoPCmd64(a, 0x00483a04, 0, v)
+
+#define impact_cmd_hq_484A(a, p, v)		ImpactCFifoPCmd64(a, (0x00484a04 + ((p) << 8)), 0, v)
+#define impact_cmd_hq_484B(a, p, v)		ImpactCFifoPCmd64(a, (0x00484b04 + ((p) << 8)), 0, v)
+*/
+
+#endif /* _IMPACT_H */