davidlt/kernel-ark
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity
aa2e3e4f83
kernel-ark/drivers/char/drm/ffb_context.c
Tim Schmielau cd354f1ae7 [PATCH] remove many unneeded #includes of sched.h 
After Al Viro (finally) succeeded in removing the sched.h #include in module.h
recently, it makes sense again to remove other superfluous sched.h includes.
There are quite a lot of files which include it but don't actually need
anything defined in there.  Presumably these includes were once needed for
macros that used to live in sched.h, but moved to other header files in the
course of cleaning it up.

To ease the pain, this time I did not fiddle with any header files and only
removed #includes from .c-files, which tend to cause less trouble.

Compile tested against 2.6.20-rc2 and 2.6.20-rc2-mm2 (with offsets) on alpha,
arm, i386, ia64, mips, powerpc, and x86_64 with allnoconfig, defconfig,
allmodconfig, and allyesconfig as well as a few randconfigs on x86_64 and all
configs in arch/arm/configs on arm.  I also checked that no new warnings were
introduced by the patch (actually, some warnings are removed that were emitted
by unnecessarily included header files).

Signed-off-by: Tim Schmielau <tim@physik3.uni-rostock.de>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-14 08:09:54 -08:00

545 lines
18 KiB
C
Raw Blame History

/* $Id: ffb_context.c,v 1.5 2001/08/09 17:47:51 davem Exp $
* 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 <asm/upa.h>
#include "ffb.h"
#include "drmP.h"
#include "ffb_drv.h"
static int DRM(alloc_queue) (drm_device_t * 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_driver_context_switch(drm_device_t * dev, int old, int new)
{
ffb_dev_priv_t *fpriv = (ffb_dev_priv_t *) dev->dev_private;
#ifdef 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_driver_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_driver_addctx(struct inode *inode, struct file *filp, unsigned int cmd,
unsigned long arg)
{
drm_file_t *priv = filp->private_data;
drm_device_t *dev = priv->dev;
drm_ctx_t ctx;
int idx;
if (copy_from_user(&ctx, (drm_ctx_t __user *) arg, sizeof(ctx)))
return -EFAULT;
idx = DRM(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_driver_modctx(struct inode *inode, struct file *filp, unsigned int cmd,
unsigned long arg)
{
drm_file_t *priv = filp->private_data;
drm_device_t *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_driver_getctx(struct inode *inode, struct file *filp, unsigned int cmd,
unsigned long arg)
{
drm_file_t *priv = filp->private_data;
drm_device_t *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_driver_switchctx(struct inode *inode, struct file *filp,
unsigned int cmd, unsigned long arg)
{
drm_file_t *priv = filp->private_data;
drm_device_t *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_driver_context_switch(dev, dev->last_context, ctx.handle);
}
int ffb_driver_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_driver_rmctx(struct inode *inode, struct file *filp, unsigned int cmd,
unsigned long arg)
{
drm_ctx_t ctx;
drm_file_t *priv = filp->private_data;
drm_device_t *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;
kfree(fpriv->hw_state[idx]);
fpriv->hw_state[idx] = NULL;
return 0;
}
void ffb_set_context_ioctls(void)
{
DRM(ioctls)[DRM_IOCTL_NR(DRM_IOCTL_ADD_CTX)].func = ffb_driver_addctx;
DRM(ioctls)[DRM_IOCTL_NR(DRM_IOCTL_RM_CTX)].func = ffb_driver_rmctx;
DRM(ioctls)[DRM_IOCTL_NR(DRM_IOCTL_MOD_CTX)].func = ffb_driver_modctx;
DRM(ioctls)[DRM_IOCTL_NR(DRM_IOCTL_GET_CTX)].func = ffb_driver_getctx;
DRM(ioctls)[DRM_IOCTL_NR(DRM_IOCTL_SWITCH_CTX)].func =
ffb_driver_switchctx;
DRM(ioctls)[DRM_IOCTL_NR(DRM_IOCTL_NEW_CTX)].func = ffb_driver_newctx;
DRM(ioctls)[DRM_IOCTL_NR(DRM_IOCTL_RES_CTX)].func = ffb_driver_resctx;
}
Reference in New Issue View Git Blame Copy Permalink