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path: root/linux-core/i810_dma.c
AgeCommit message (Expand)Author
2008-03-06drm: reorganise minor number handling using code from modesetting branchDave Airlie
2008-01-03drm: cleanup DRM_DEBUG() parametersMárton Németh
2007-11-22drm: major whitespace/coding style realignment with kernelDave Airlie
2007-11-05drm: remove lots of spurious whitespace.Dave Airlie
2007-07-20Replace DRM_IOCTL_ARGS with (dev, data, file_priv) and remove DRM_DEVICE.Eric Anholt
2007-07-20Replace filp in ioctl arguments with drm_file *file_priv.Eric Anholt
2007-07-20Remove DRM_ERR OS macro.Eric Anholt
2007-07-16drm: remove drm_buf_tDave Airlie
2007-07-16drm: remove drmP.h internal typedefsDave Airlie
2007-07-16drm: detypedef drm.h and fixup all problemsDave Airlie
2007-05-26drm: cleanup use of Linux list handling macrosDave Airlie
2007-03-19make drm fops const from kernelDave Airlie
2007-02-18drm: remove last usage of VM_OFFSETDave Airlie
2007-01-08fixup i810/i830 to use drm_core_ioremap instead of drm_ioremapDave Airlie
2006-12-19remove do munmap 4 argsDave Airlie
2006-08-28fix const pointer warnings with file_operationsDave Airlie
2006-08-28drm: i810_dma.c: fix pointer arithmetic for 64-bit targetDave Airlie
2006-02-18make some functions static from the kernelDave Airlie
2006-02-18major realigment of DRM CVS with kernel code, makes integration much easierDave Airlie
2005-09-03convert ioctl flags to use flags instead of separate intsDave Airlie
2005-08-16add Egberts 32/64 bit patch (its in kernel already...)Dave Airlie
2005-08-05Rename the driver hooks in the DRM to something a little moreEric Anholt
2005-08-04Split the control of master vs root priv. Everything is still marked asJon Smirl
2005-06-16Force AGP always for Intel chipsets.Alan Hourihane
2005-02-01make more functions static in i810 and fix pageflip cleanupDave Airlie
2005-01-01i810/i830 bug with Jon's file operations changesDave Airlie
2004-11-11patch from bug 1803 - will try and push to kernel soonDave Airlie
2004-10-31Allow drivers to override reclaim_buffers in an OS-independent way byFelix Kuehling
2004-10-23fix pfn vs page for older kernels (2.6.9-rc kernels many not work..)Dave Airlie
2004-10-22Bring in patch from kernel for remap_pfn_rangeJon Smirl
2004-10-12Breakout heads into their own data structures.Jon Smirl
2004-09-30Lindent of core build. Drivers checked for no binary diffs. A few filesJon Smirl
2004-09-30Make fops per driver instead of global, remove default flush, poll, readJon Smirl
2004-09-27First check in for DRM that splits core from personality modulesJon Smirl
2004-09-231) switches from class_sysfs to drm sysfs implementation to allowJon Smirl
2004-09-20remove HAVE_COUNTERSDave Airlie
2004-09-05merge back bunch of whitespace and misc changes from kernelDave Airlie
2004-08-30implement drm_core_check_feature and use it .. looks lots nicerDave Airlie
2004-08-27__NO_VERSION__ hasn't been needed since 2.3 days ditch it...Dave Airlie
2004-08-24Merged drmfntbl-0-0-2Dave Airlie
2004-08-17Merged drmfntbl-0-0-1Dave Airlie
2004-07-31athe patch below optimises the drm code to not do put_user() on memory theDave Airlie
2004-07-25sync up with current 2.6 kernel bk tree - mostly __user annotationsDave Airlie
2004-07-20fix some more NULLs from kernelDave Airlie
2004-04-21bug from Linux kernel list caught by checkerDave Airlie
2004-04-10patch from Andrew Morton tree from Arjan van de Ven fixes some oopses seenDave Airlie
2004-04-08big whitespace .. this aligns all the whitespace in this file with the bkDave Airlie
2003-11-05- Tie the DRM to a specific device: setunique no longer succeeds when givenEric Anholt
2003-10-17- Move IRQ functions from drm_dma.h to new drm_irq.h and disentangle themEric Anholt
2003-09-25Whitespace cleanup (spaces before tabs or instead of tabs).Eric Anholt
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/* $Id$
 * ffb_context.c: Creator/Creator3D DRI/DRM context switching.
 *
 * Copyright (C) 2000 David S. Miller (davem@redhat.com)
 *
 * Almost entirely stolen from tdfx_context.c, see there
 * for authors.
 */

#include <linux/sched.h>
#include <asm/upa.h>

#include "drmP.h"
#include "ffb_drv.h"

static int ffb_alloc_queue(struct drm_device * dev, int is_2d_only) {
	ffb_dev_priv_t *fpriv = (ffb_dev_priv_t *) dev->dev_private;
	int i;

	for (i = 0; i < FFB_MAX_CTXS; i++) {
		if (fpriv->hw_state[i] == NULL)
			break;
	}
	if (i == FFB_MAX_CTXS)
		return -1;

	fpriv->hw_state[i] = kmalloc(sizeof(struct ffb_hw_context), GFP_KERNEL);
	if (fpriv->hw_state[i] == NULL)
		return -1;

	fpriv->hw_state[i]->is_2d_only = is_2d_only;

	/* Plus one because 0 is the special DRM_KERNEL_CONTEXT. */
	return i + 1;
}

static void ffb_save_context(ffb_dev_priv_t * fpriv, int idx)
{
	ffb_fbcPtr ffb = fpriv->regs;
	struct ffb_hw_context *ctx;
	int i;

	ctx = fpriv->hw_state[idx - 1];
	if (idx == 0 || ctx == NULL)
		return;

	if (ctx->is_2d_only) {
		/* 2D applications only care about certain pieces
		 * of state.
		 */
		ctx->drawop = upa_readl(&ffb->drawop);
		ctx->ppc = upa_readl(&ffb->ppc);
		ctx->wid = upa_readl(&ffb->wid);
		ctx->fg = upa_readl(&ffb->fg);
		ctx->bg = upa_readl(&ffb->bg);
		ctx->xclip = upa_readl(&ffb->xclip);
		ctx->fbc = upa_readl(&ffb->fbc);
		ctx->rop = upa_readl(&ffb->rop);
		ctx->cmp = upa_readl(&ffb->cmp);
		ctx->matchab = upa_readl(&ffb->matchab);
		ctx->magnab = upa_readl(&ffb->magnab);
		ctx->pmask = upa_readl(&ffb->pmask);
		ctx->xpmask = upa_readl(&ffb->xpmask);
		ctx->lpat = upa_readl(&ffb->lpat);
		ctx->fontxy = upa_readl(&ffb->fontxy);
		ctx->fontw = upa_readl(&ffb->fontw);
		ctx->fontinc = upa_readl(&ffb->fontinc);

		/* stencil/stencilctl only exists on FFB2+ and later
		 * due to the introduction of 3DRAM-III.
		 */
		if (fpriv->ffb_type == ffb2_vertical_plus ||
		    fpriv->ffb_type == ffb2_horizontal_plus) {
			ctx->stencil = upa_readl(&ffb->stencil);
			ctx->stencilctl = upa_readl(&ffb->stencilctl);
		}

		for (i = 0; i < 32; i++)
			ctx->area_pattern[i] = upa_readl(&ffb->pattern[i]);
		ctx->ucsr = upa_readl(&ffb->ucsr);
		return;
	}

	/* Fetch drawop. */
	ctx->drawop = upa_readl(&ffb->drawop);

	/* If we were saving the vertex registers, this is where
	 * we would do it.  We would save 32 32-bit words starting
	 * at ffb->suvtx.
	 */

	/* Capture rendering attributes. */

	ctx->ppc = upa_readl(&ffb->ppc);	/* Pixel Processor Control */
	ctx->wid = upa_readl(&ffb->wid);	/* Current WID */
	ctx->fg = upa_readl(&ffb->fg);	/* Constant FG color */
	ctx->bg = upa_readl(&ffb->bg);	/* Constant BG color */
	ctx->consty = upa_readl(&ffb->consty);	/* Constant Y */
	ctx->constz = upa_readl(&ffb->constz);	/* Constant Z */
	ctx->xclip = upa_readl(&ffb->xclip);	/* X plane clip */
	ctx->dcss = upa_readl(&ffb->dcss);	/* Depth Cue Scale Slope */
	ctx->vclipmin = upa_readl(&ffb->vclipmin);	/* Primary XY clip, minimum */
	ctx->vclipmax = upa_readl(&ffb->vclipmax);	/* Primary XY clip, maximum */
	ctx->vclipzmin = upa_readl(&ffb->vclipzmin);	/* Primary Z clip, minimum */
	ctx->vclipzmax = upa_readl(&ffb->vclipzmax);	/* Primary Z clip, maximum */
	ctx->dcsf = upa_readl(&ffb->dcsf);	/* Depth Cue Scale Front Bound */
	ctx->dcsb = upa_readl(&ffb->dcsb);	/* Depth Cue Scale Back Bound */
	ctx->dczf = upa_readl(&ffb->dczf);	/* Depth Cue Scale Z Front */
	ctx->dczb = upa_readl(&ffb->dczb);	/* Depth Cue Scale Z Back */
	ctx->blendc = upa_readl(&ffb->blendc);	/* Alpha Blend Control */
	ctx->blendc1 = upa_readl(&ffb->blendc1);	/* Alpha Blend Color 1 */
	ctx->blendc2 = upa_readl(&ffb->blendc2);	/* Alpha Blend Color 2 */
	ctx->fbc = upa_readl(&ffb->fbc);	/* Frame Buffer Control */
	ctx->rop = upa_readl(&ffb->rop);	/* Raster Operation */
	ctx->cmp = upa_readl(&ffb->cmp);	/* Compare Controls */
	ctx->matchab = upa_readl(&ffb->matchab);	/* Buffer A/B Match Ops */
	ctx->matchc = upa_readl(&ffb->matchc);	/* Buffer C Match Ops */
	ctx->magnab = upa_readl(&ffb->magnab);	/* Buffer A/B Magnitude Ops */
	ctx->magnc = upa_readl(&ffb->magnc);	/* Buffer C Magnitude Ops */
	ctx->pmask = upa_readl(&ffb->pmask);	/* RGB Plane Mask */
	ctx->xpmask = upa_readl(&ffb->xpmask);	/* X Plane Mask */
	ctx->ypmask = upa_readl(&ffb->ypmask);	/* Y Plane Mask */
	ctx->zpmask = upa_readl(&ffb->zpmask);	/* Z Plane Mask */

	/* Auxiliary Clips. */
	ctx->auxclip0min = upa_readl(&ffb->auxclip[0].min);
	ctx->auxclip0max = upa_readl(&ffb->auxclip[0].max);
	ctx->auxclip1min = upa_readl(&ffb->auxclip[1].min);
	ctx->auxclip1max = upa_readl(&ffb->auxclip[1].max);
	ctx->auxclip2min = upa_readl(&ffb->auxclip[2].min);
	ctx->auxclip2max = upa_readl(&ffb->auxclip[2].max);
	ctx->auxclip3min = upa_readl(&ffb->auxclip[3].min);
	ctx->auxclip3max = upa_readl(&ffb->auxclip[3].max);

	ctx->lpat = upa_readl(&ffb->lpat);	/* Line Pattern */
	ctx->fontxy = upa_readl(&ffb->fontxy);	/* XY Font Coordinate */
	ctx->fontw = upa_readl(&ffb->fontw);	/* Font Width */
	ctx->fontinc = upa_readl(&ffb->fontinc);	/* Font X/Y Increment */

	/* These registers/features only exist on FFB2 and later chips. */
	if (fpriv->ffb_type >= ffb2_prototype) {
		ctx->dcss1 = upa_readl(&ffb->dcss1);	/* Depth Cue Scale Slope 1 */
		ctx->dcss2 = upa_readl(&ffb->dcss2);	/* Depth Cue Scale Slope 2 */
		ctx->dcss2 = upa_readl(&ffb->dcss3);	/* Depth Cue Scale Slope 3 */
		ctx->dcs2 = upa_readl(&ffb->dcs2);	/* Depth Cue Scale 2 */
		ctx->dcs3 = upa_readl(&ffb->dcs3);	/* Depth Cue Scale 3 */
		ctx->dcs4 = upa_readl(&ffb->dcs4);	/* Depth Cue Scale 4 */
		ctx->dcd2 = upa_readl(&ffb->dcd2);	/* Depth Cue Depth 2 */
		ctx->dcd3 = upa_readl(&ffb->dcd3);	/* Depth Cue Depth 3 */
		ctx->dcd4 = upa_readl(&ffb->dcd4);	/* Depth Cue Depth 4 */

		/* And stencil/stencilctl only exists on FFB2+ and later
		 * due to the introduction of 3DRAM-III.
		 */
		if (fpriv->ffb_type == ffb2_vertical_plus ||
		    fpriv->ffb_type == ffb2_horizontal_plus) {
			ctx->stencil = upa_readl(&ffb->stencil);
			ctx->stencilctl = upa_readl(&ffb->stencilctl);
		}
	}

	/* Save the 32x32 area pattern. */
	for (i = 0; i < 32; i++)
		ctx->area_pattern[i] = upa_readl(&ffb->pattern[i]);

	/* Finally, stash away the User Constol/Status Register. */
	ctx->ucsr = upa_readl(&ffb->ucsr);
}

static void ffb_restore_context(ffb_dev_priv_t * fpriv, int old, int idx)
{
	ffb_fbcPtr ffb = fpriv->regs;
	struct ffb_hw_context *ctx;
	int i;

	ctx = fpriv->hw_state[idx - 1];
	if (idx == 0 || ctx == NULL)
		return;

	if (ctx->is_2d_only) {
		/* 2D applications only care about certain pieces
		 * of state.
		 */
		upa_writel(ctx->drawop, &ffb->drawop);

		/* If we were restoring the vertex registers, this is where
		 * we would do it.  We would restore 32 32-bit words starting
		 * at ffb->suvtx.
		 */

		upa_writel(ctx->ppc, &ffb->ppc);
		upa_writel(ctx->wid, &ffb->wid);
		upa_writel(ctx->fg, &ffb->fg);
		upa_writel(ctx->bg, &ffb->bg);
		upa_writel(ctx->xclip, &ffb->xclip);
		upa_writel(ctx->fbc, &ffb->fbc);
		upa_writel(ctx->rop, &ffb->rop);
		upa_writel(ctx->cmp, &ffb->cmp);
		upa_writel(ctx->matchab, &ffb->matchab);
		upa_writel(ctx->magnab, &ffb->magnab);
		upa_writel(ctx->pmask, &ffb->pmask);
		upa_writel(ctx->xpmask, &ffb->xpmask);
		upa_writel(ctx->lpat, &ffb->lpat);
		upa_writel(ctx->fontxy, &ffb->fontxy);
		upa_writel(ctx->fontw, &ffb->fontw);
		upa_writel(ctx->fontinc, &ffb->fontinc);

		/* stencil/stencilctl only exists on FFB2+ and later
		 * due to the introduction of 3DRAM-III.
		 */
		if (fpriv->ffb_type == ffb2_vertical_plus ||
		    fpriv->ffb_type == ffb2_horizontal_plus) {
			upa_writel(ctx->stencil, &ffb->stencil);
			upa_writel(ctx->stencilctl, &ffb->stencilctl);
			upa_writel(0x80000000, &ffb->fbc);
			upa_writel((ctx->stencilctl | 0x80000),
				   &ffb->rawstencilctl);
			upa_writel(ctx->fbc, &ffb->fbc);
		}

		for (i = 0; i < 32; i++)
			upa_writel(ctx->area_pattern[i], &ffb->pattern[i]);
		upa_writel((ctx->ucsr & 0xf0000), &ffb->ucsr);
		return;
	}

	/* Restore drawop. */
	upa_writel(ctx->drawop, &ffb->drawop);

	/* If we were restoring the vertex registers, this is where
	 * we would do it.  We would restore 32 32-bit words starting
	 * at ffb->suvtx.
	 */

	/* Restore rendering attributes. */

	upa_writel(ctx->ppc, &ffb->ppc);	/* Pixel Processor Control */
	upa_writel(ctx->wid, &ffb->wid);	/* Current WID */
	upa_writel(ctx->fg, &ffb->fg);	/* Constant FG color */
	upa_writel(ctx->bg, &ffb->bg);	/* Constant BG color */
	upa_writel(ctx->consty, &ffb->consty);	/* Constant Y */
	upa_writel(ctx->constz, &ffb->constz);	/* Constant Z */
	upa_writel(ctx->xclip, &ffb->xclip);	/* X plane clip */
	upa_writel(ctx->dcss, &ffb->dcss);	/* Depth Cue Scale Slope */
	upa_writel(ctx->vclipmin, &ffb->vclipmin);	/* Primary XY clip, minimum */
	upa_writel(ctx->vclipmax, &ffb->vclipmax);	/* Primary XY clip, maximum */
	upa_writel(ctx->vclipzmin, &ffb->vclipzmin);	/* Primary Z clip, minimum */
	upa_writel(ctx->vclipzmax, &ffb->vclipzmax);	/* Primary Z clip, maximum */
	upa_writel(ctx->dcsf, &ffb->dcsf);	/* Depth Cue Scale Front Bound */
	upa_writel(ctx->dcsb, &ffb->dcsb);	/* Depth Cue Scale Back Bound */
	upa_writel(ctx->dczf, &ffb->dczf);	/* Depth Cue Scale Z Front */
	upa_writel(ctx->dczb, &ffb->dczb);	/* Depth Cue Scale Z Back */
	upa_writel(ctx->blendc, &ffb->blendc);	/* Alpha Blend Control */
	upa_writel(ctx->blendc1, &ffb->blendc1);	/* Alpha Blend Color 1 */
	upa_writel(ctx->blendc2, &ffb->blendc2);	/* Alpha Blend Color 2 */
	upa_writel(ctx->fbc, &ffb->fbc);	/* Frame Buffer Control */
	upa_writel(ctx->rop, &ffb->rop);	/* Raster Operation */
	upa_writel(ctx->cmp, &ffb->cmp);	/* Compare Controls */
	upa_writel(ctx->matchab, &ffb->matchab);	/* Buffer A/B Match Ops */
	upa_writel(ctx->matchc, &ffb->matchc);	/* Buffer C Match Ops */
	upa_writel(ctx->magnab, &ffb->magnab);	/* Buffer A/B Magnitude Ops */
	upa_writel(ctx->magnc, &ffb->magnc);	/* Buffer C Magnitude Ops */
	upa_writel(ctx->pmask, &ffb->pmask);	/* RGB Plane Mask */
	upa_writel(ctx->xpmask, &ffb->xpmask);	/* X Plane Mask */
	upa_writel(ctx->ypmask, &ffb->ypmask);	/* Y Plane Mask */
	upa_writel(ctx->zpmask, &ffb->zpmask);	/* Z Plane Mask */

	/* Auxiliary Clips. */
	upa_writel(ctx->auxclip0min, &ffb->auxclip[0].min);
	upa_writel(ctx->auxclip0max, &ffb->auxclip[0].max);
	upa_writel(ctx->auxclip1min, &ffb->auxclip[1].min);
	upa_writel(ctx->auxclip1max, &ffb->auxclip[1].max);
	upa_writel(ctx->auxclip2min, &ffb->auxclip[2].min);
	upa_writel(ctx->auxclip2max, &ffb->auxclip[2].max);
	upa_writel(ctx->auxclip3min, &ffb->auxclip[3].min);
	upa_writel(ctx->auxclip3max, &ffb->auxclip[3].max);

	upa_writel(ctx->lpat, &ffb->lpat);	/* Line Pattern */
	upa_writel(ctx->fontxy, &ffb->fontxy);	/* XY Font Coordinate */
	upa_writel(ctx->fontw, &ffb->fontw);	/* Font Width */
	upa_writel(ctx->fontinc, &ffb->fontinc);	/* Font X/Y Increment */

	/* These registers/features only exist on FFB2 and later chips. */
	if (fpriv->ffb_type >= ffb2_prototype) {
		upa_writel(ctx->dcss1, &ffb->dcss1);	/* Depth Cue Scale Slope 1 */
		upa_writel(ctx->dcss2, &ffb->dcss2);	/* Depth Cue Scale Slope 2 */
		upa_writel(ctx->dcss3, &ffb->dcss2);	/* Depth Cue Scale Slope 3 */
		upa_writel(ctx->dcs2, &ffb->dcs2);	/* Depth Cue Scale 2 */
		upa_writel(ctx->dcs3, &ffb->dcs3);	/* Depth Cue Scale 3 */
		upa_writel(ctx->dcs4, &ffb->dcs4);	/* Depth Cue Scale 4 */
		upa_writel(ctx->dcd2, &ffb->dcd2);	/* Depth Cue Depth 2 */
		upa_writel(ctx->dcd3, &ffb->dcd3);	/* Depth Cue Depth 3 */
		upa_writel(ctx->dcd4, &ffb->dcd4);	/* Depth Cue Depth 4 */

		/* And stencil/stencilctl only exists on FFB2+ and later
		 * due to the introduction of 3DRAM-III.
		 */
		if (fpriv->ffb_type == ffb2_vertical_plus ||
		    fpriv->ffb_type == ffb2_horizontal_plus) {
			/* Unfortunately, there is a hardware bug on
			 * the FFB2+ chips which prevents a normal write
			 * to the stencil control register from working
			 * as it should.
			 *
			 * The state controlled by the FFB stencilctl register
			 * really gets transferred to the per-buffer instances
			 * of the stencilctl register in the 3DRAM chips.
			 *
			 * The bug is that FFB does not update buffer C correctly,
			 * so we have to do it by hand for them.
			 */

			/* This will update buffers A and B. */
			upa_writel(ctx->stencil, &ffb->stencil);
			upa_writel(ctx->stencilctl, &ffb->stencilctl);

			/* Force FFB to use buffer C 3dram regs. */
			upa_writel(0x80000000, &ffb->fbc);
			upa_writel((ctx->stencilctl | 0x80000),
				   &ffb->rawstencilctl);

			/* Now restore the correct FBC controls. */
			upa_writel(ctx->fbc, &ffb->fbc);
		}
	}

	/* Restore the 32x32 area pattern. */
	for (i = 0; i < 32; i++)
		upa_writel(ctx->area_pattern[i], &ffb->pattern[i]);

	/* Finally, stash away the User Constol/Status Register.
	 * The only state we really preserve here is the picking
	 * control.
	 */
	upa_writel((ctx->ucsr & 0xf0000), &ffb->ucsr);
}

#define FFB_UCSR_FB_BUSY       0x01000000
#define FFB_UCSR_RP_BUSY       0x02000000
#define FFB_UCSR_ALL_BUSY      (FFB_UCSR_RP_BUSY|FFB_UCSR_FB_BUSY)

static void FFBWait(ffb_fbcPtr ffb)
{
	int limit = 100000;

	do {
		u32 regval = upa_readl(&ffb->ucsr);

		if ((regval & FFB_UCSR_ALL_BUSY) == 0)
			break;
	} while (--limit);
}

int ffb_context_switch(struct drm_device * dev, int old, int new) {
	ffb_dev_priv_t *fpriv = (ffb_dev_priv_t *) dev->dev_private;

#if DRM_DMA_HISTOGRAM
	dev->ctx_start = get_cycles();
#endif

	DRM_DEBUG("Context switch from %d to %d\n", old, new);

	if (new == dev->last_context || dev->last_context == 0) {
		dev->last_context = new;
		return 0;
	}

	FFBWait(fpriv->regs);
	ffb_save_context(fpriv, old);
	ffb_restore_context(fpriv, old, new);
	FFBWait(fpriv->regs);

	dev->last_context = new;

	return 0;
}

int ffb_resctx(struct inode * inode, struct file * filp, unsigned int cmd,
		 unsigned long arg) {
	drm_ctx_res_t res;
	drm_ctx_t ctx;
	int i;

	DRM_DEBUG("%d\n", DRM_RESERVED_CONTEXTS);
	if (copy_from_user(&res, (drm_ctx_res_t __user *) arg, sizeof(res)))
		return -EFAULT;
	if (res.count >= DRM_RESERVED_CONTEXTS) {
		memset(&ctx, 0, sizeof(ctx));
		for (i = 0; i < DRM_RESERVED_CONTEXTS; i++) {
			ctx.handle = i;
			if (copy_to_user(&res.contexts[i], &i, sizeof(i)))
				return -EFAULT;
		}
	}
	res.count = DRM_RESERVED_CONTEXTS;
	if (copy_to_user((drm_ctx_res_t __user *) arg, &res, sizeof(res)))
		return -EFAULT;
	return 0;
}

int ffb_addctx(struct inode * inode, struct file * filp, unsigned int cmd,
		 unsigned long arg) {
	drm_file_t *priv = filp->private_data;
	struct drm_device *dev = priv->dev;
	drm_ctx_t ctx;
	int idx;

	if (copy_from_user(&ctx, (drm_ctx_t __user *) arg, sizeof(ctx)))
		return -EFAULT;
	idx = ffb_alloc_queue(dev, (ctx.flags & _DRM_CONTEXT_2DONLY));
	if (idx < 0)
		return -ENFILE;

	DRM_DEBUG("%d\n", ctx.handle);
	ctx.handle = idx;
	if (copy_to_user((drm_ctx_t __user *) arg, &ctx, sizeof(ctx)))
		return -EFAULT;
	return 0;
}

int ffb_modctx(struct inode * inode, struct file * filp, unsigned int cmd,
		 unsigned long arg) {
	drm_file_t *priv = filp->private_data;
	struct drm_device *dev = priv->dev;
	ffb_dev_priv_t *fpriv = (ffb_dev_priv_t *) dev->dev_private;
	struct ffb_hw_context *hwctx;
	drm_ctx_t ctx;
	int idx;

	if (copy_from_user(&ctx, (drm_ctx_t __user *) arg, sizeof(ctx)))
		return -EFAULT;

	idx = ctx.handle;
	if (idx <= 0 || idx >= FFB_MAX_CTXS)
		return -EINVAL;

	hwctx = fpriv->hw_state[idx - 1];
	if (hwctx == NULL)
		return -EINVAL;

	if ((ctx.flags & _DRM_CONTEXT_2DONLY) == 0)
		hwctx->is_2d_only = 0;
	else
		hwctx->is_2d_only = 1;

	return 0;
}

int ffb_getctx(struct inode * inode, struct file * filp, unsigned int cmd,
		 unsigned long arg) {
	drm_file_t *priv = filp->private_data;
	struct drm_device *dev = priv->dev;
	ffb_dev_priv_t *fpriv = (ffb_dev_priv_t *) dev->dev_private;
	struct ffb_hw_context *hwctx;
	drm_ctx_t ctx;
	int idx;

	if (copy_from_user(&ctx, (drm_ctx_t __user *) arg, sizeof(ctx)))
		return -EFAULT;

	idx = ctx.handle;
	if (idx <= 0 || idx >= FFB_MAX_CTXS)
		return -EINVAL;

	hwctx = fpriv->hw_state[idx - 1];
	if (hwctx == NULL)
		return -EINVAL;

	if (hwctx->is_2d_only != 0)
		ctx.flags = _DRM_CONTEXT_2DONLY;
	else
		ctx.flags = 0;

	if (copy_to_user((drm_ctx_t __user *) arg, &ctx, sizeof(ctx)))
		return -EFAULT;

	return 0;
}

int ffb_switchctx(struct inode * inode, struct file * filp, unsigned int cmd,
		    unsigned long arg) {
	drm_file_t *priv = filp->private_data;
	struct drm_device *dev = priv->dev;
	drm_ctx_t ctx;

	if (copy_from_user(&ctx, (drm_ctx_t __user *) arg, sizeof(ctx)))
		return -EFAULT;
	DRM_DEBUG("%d\n", ctx.handle);
	return ffb_context_switch(dev, dev->last_context, ctx.handle);
}

int ffb_newctx(struct inode * inode, struct file * filp, unsigned int cmd,
		 unsigned long arg) {
	drm_ctx_t ctx;

	if (copy_from_user(&ctx, (drm_ctx_t __user *) arg, sizeof(ctx)))
		return -EFAULT;
	DRM_DEBUG("%d\n", ctx.handle);

	return 0;
}

int ffb_rmctx(struct inode * inode, struct file * filp, unsigned int cmd,
		unsigned long arg) {
	drm_ctx_t ctx;
	drm_file_t *priv = filp->private_data;
	struct drm_device *dev = priv->dev;
	ffb_dev_priv_t *fpriv = (ffb_dev_priv_t *) dev->dev_private;
	int idx;

	if (copy_from_user(&ctx, (drm_ctx_t __user *) arg, sizeof(ctx)))
		return -EFAULT;
	DRM_DEBUG("%d\n", ctx.handle);

	idx = ctx.handle - 1;
	if (idx < 0 || idx >= FFB_MAX_CTXS)
		return -EINVAL;

	if (fpriv->hw_state[idx] != NULL) {
		kfree(fpriv->hw_state[idx]);
		fpriv->hw_state[idx] = NULL;
	}
	return 0;
}

static void ffb_driver_reclaim_buffers_locked(struct drm_device * dev)
{
	ffb_dev_priv_t *fpriv = (ffb_dev_priv_t *) dev->dev_private;
	int context = _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock);
	int idx;

	idx = context - 1;
	if (fpriv &&
	    context != DRM_KERNEL_CONTEXT && fpriv->hw_state[idx] != NULL) {
		kfree(fpriv->hw_state[idx]);
		fpriv->hw_state[idx] = NULL;
	}
}

static void ffb_driver_lastclose(struct drm_device * dev)
{
	if (dev->dev_private)
		kfree(dev->dev_private);
}

static void ffb_driver_unload(struct drm_device * dev)
{
	if (ffb_position != NULL)
		kfree(ffb_position);
}

static int ffb_driver_kernel_context_switch_unlock(struct drm_device *dev)
{
	dev->lock.filp = 0;
	{
		__volatile__ unsigned int *plock = &dev->lock.hw_lock->lock;
		unsigned int old, new, prev, ctx;

		ctx = lock.context;
		do {
			old = *plock;
			new = ctx;
			prev = cmpxchg(plock, old, new);
		} while (prev != old);
	}
	wake_up_interruptible(&dev->lock.lock_queue);
}

unsigned long ffb_driver_get_map_ofs(drm_map_t * map)
{
	return (map->offset & 0xffffffff);
}

unsigned long ffb_driver_get_reg_ofs(struct drm_device * dev)
{
	ffb_dev_priv_t *ffb_priv = (ffb_dev_priv_t *) dev->dev_private;

	if (ffb_priv)
		return ffb_priv->card_phys_base;

	return 0;
}
generated by cgit v1.2.3 (git 2.25.1) at 2025-12-12 23:35:09 +0000