+++ /dev/null
-/**
- * \file radeon_ioc32.c
- *
- * 32-bit ioctl compatibility routines for the Radeon DRM.
- *
- * \author Paul Mackerras <paulus@samba.org>
- *
- * Copyright (C) Paul Mackerras 2005
- * All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice (including the next
- * paragraph) shall be included in all copies or substantial portions of the
- * Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE AUTHOR BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
- * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
- * IN THE SOFTWARE.
- */
-#include <linux/compat.h>
-
-#include <drm/drmP.h>
-#include <drm/radeon_drm.h>
-#include "radeon_drv.h"
-
-typedef struct drm_radeon_init32 {
- int func;
- u32 sarea_priv_offset;
- int is_pci;
- int cp_mode;
- int gart_size;
- int ring_size;
- int usec_timeout;
-
- unsigned int fb_bpp;
- unsigned int front_offset, front_pitch;
- unsigned int back_offset, back_pitch;
- unsigned int depth_bpp;
- unsigned int depth_offset, depth_pitch;
-
- u32 fb_offset;
- u32 mmio_offset;
- u32 ring_offset;
- u32 ring_rptr_offset;
- u32 buffers_offset;
- u32 gart_textures_offset;
-} drm_radeon_init32_t;
-
-static int compat_radeon_cp_init(struct file *file, unsigned int cmd,
- unsigned long arg)
-{
- drm_radeon_init32_t init32;
- drm_radeon_init_t __user *init;
-
- if (copy_from_user(&init32, (void __user *)arg, sizeof(init32)))
- return -EFAULT;
-
- init = compat_alloc_user_space(sizeof(*init));
- if (!access_ok(VERIFY_WRITE, init, sizeof(*init))
- || __put_user(init32.func, &init->func)
- || __put_user(init32.sarea_priv_offset, &init->sarea_priv_offset)
- || __put_user(init32.is_pci, &init->is_pci)
- || __put_user(init32.cp_mode, &init->cp_mode)
- || __put_user(init32.gart_size, &init->gart_size)
- || __put_user(init32.ring_size, &init->ring_size)
- || __put_user(init32.usec_timeout, &init->usec_timeout)
- || __put_user(init32.fb_bpp, &init->fb_bpp)
- || __put_user(init32.front_offset, &init->front_offset)
- || __put_user(init32.front_pitch, &init->front_pitch)
- || __put_user(init32.back_offset, &init->back_offset)
- || __put_user(init32.back_pitch, &init->back_pitch)
- || __put_user(init32.depth_bpp, &init->depth_bpp)
- || __put_user(init32.depth_offset, &init->depth_offset)
- || __put_user(init32.depth_pitch, &init->depth_pitch)
- || __put_user(init32.fb_offset, &init->fb_offset)
- || __put_user(init32.mmio_offset, &init->mmio_offset)
- || __put_user(init32.ring_offset, &init->ring_offset)
- || __put_user(init32.ring_rptr_offset, &init->ring_rptr_offset)
- || __put_user(init32.buffers_offset, &init->buffers_offset)
- || __put_user(init32.gart_textures_offset,
- &init->gart_textures_offset))
- return -EFAULT;
-
- return drm_ioctl(file, DRM_IOCTL_RADEON_CP_INIT, (unsigned long)init);
-}
-
-typedef struct drm_radeon_clear32 {
- unsigned int flags;
- unsigned int clear_color;
- unsigned int clear_depth;
- unsigned int color_mask;
- unsigned int depth_mask; /* misnamed field: should be stencil */
- u32 depth_boxes;
-} drm_radeon_clear32_t;
-
-static int compat_radeon_cp_clear(struct file *file, unsigned int cmd,
- unsigned long arg)
-{
- drm_radeon_clear32_t clr32;
- drm_radeon_clear_t __user *clr;
-
- if (copy_from_user(&clr32, (void __user *)arg, sizeof(clr32)))
- return -EFAULT;
-
- clr = compat_alloc_user_space(sizeof(*clr));
- if (!access_ok(VERIFY_WRITE, clr, sizeof(*clr))
- || __put_user(clr32.flags, &clr->flags)
- || __put_user(clr32.clear_color, &clr->clear_color)
- || __put_user(clr32.clear_depth, &clr->clear_depth)
- || __put_user(clr32.color_mask, &clr->color_mask)
- || __put_user(clr32.depth_mask, &clr->depth_mask)
- || __put_user((void __user *)(unsigned long)clr32.depth_boxes,
- &clr->depth_boxes))
- return -EFAULT;
-
- return drm_ioctl(file, DRM_IOCTL_RADEON_CLEAR, (unsigned long)clr);
-}
-
-typedef struct drm_radeon_stipple32 {
- u32 mask;
-} drm_radeon_stipple32_t;
-
-static int compat_radeon_cp_stipple(struct file *file, unsigned int cmd,
- unsigned long arg)
-{
- drm_radeon_stipple32_t __user *argp = (void __user *)arg;
- drm_radeon_stipple_t __user *request;
- u32 mask;
-
- if (get_user(mask, &argp->mask))
- return -EFAULT;
-
- request = compat_alloc_user_space(sizeof(*request));
- if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
- || __put_user((unsigned int __user *)(unsigned long)mask,
- &request->mask))
- return -EFAULT;
-
- return drm_ioctl(file, DRM_IOCTL_RADEON_STIPPLE, (unsigned long)request);
-}
-
-typedef struct drm_radeon_tex_image32 {
- unsigned int x, y; /* Blit coordinates */
- unsigned int width, height;
- u32 data;
-} drm_radeon_tex_image32_t;
-
-typedef struct drm_radeon_texture32 {
- unsigned int offset;
- int pitch;
- int format;
- int width; /* Texture image coordinates */
- int height;
- u32 image;
-} drm_radeon_texture32_t;
-
-static int compat_radeon_cp_texture(struct file *file, unsigned int cmd,
- unsigned long arg)
-{
- drm_radeon_texture32_t req32;
- drm_radeon_texture_t __user *request;
- drm_radeon_tex_image32_t img32;
- drm_radeon_tex_image_t __user *image;
-
- if (copy_from_user(&req32, (void __user *)arg, sizeof(req32)))
- return -EFAULT;
- if (req32.image == 0)
- return -EINVAL;
- if (copy_from_user(&img32, (void __user *)(unsigned long)req32.image,
- sizeof(img32)))
- return -EFAULT;
-
- request = compat_alloc_user_space(sizeof(*request) + sizeof(*image));
- if (!access_ok(VERIFY_WRITE, request,
- sizeof(*request) + sizeof(*image)))
- return -EFAULT;
- image = (drm_radeon_tex_image_t __user *) (request + 1);
-
- if (__put_user(req32.offset, &request->offset)
- || __put_user(req32.pitch, &request->pitch)
- || __put_user(req32.format, &request->format)
- || __put_user(req32.width, &request->width)
- || __put_user(req32.height, &request->height)
- || __put_user(image, &request->image)
- || __put_user(img32.x, &image->x)
- || __put_user(img32.y, &image->y)
- || __put_user(img32.width, &image->width)
- || __put_user(img32.height, &image->height)
- || __put_user((const void __user *)(unsigned long)img32.data,
- &image->data))
- return -EFAULT;
-
- return drm_ioctl(file, DRM_IOCTL_RADEON_TEXTURE, (unsigned long)request);
-}
-
-typedef struct drm_radeon_vertex2_32 {
- int idx; /* Index of vertex buffer */
- int discard; /* Client finished with buffer? */
- int nr_states;
- u32 state;
- int nr_prims;
- u32 prim;
-} drm_radeon_vertex2_32_t;
-
-static int compat_radeon_cp_vertex2(struct file *file, unsigned int cmd,
- unsigned long arg)
-{
- drm_radeon_vertex2_32_t req32;
- drm_radeon_vertex2_t __user *request;
-
- if (copy_from_user(&req32, (void __user *)arg, sizeof(req32)))
- return -EFAULT;
-
- request = compat_alloc_user_space(sizeof(*request));
- if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
- || __put_user(req32.idx, &request->idx)
- || __put_user(req32.discard, &request->discard)
- || __put_user(req32.nr_states, &request->nr_states)
- || __put_user((void __user *)(unsigned long)req32.state,
- &request->state)
- || __put_user(req32.nr_prims, &request->nr_prims)
- || __put_user((void __user *)(unsigned long)req32.prim,
- &request->prim))
- return -EFAULT;
-
- return drm_ioctl(file, DRM_IOCTL_RADEON_VERTEX2, (unsigned long)request);
-}
-
-typedef struct drm_radeon_cmd_buffer32 {
- int bufsz;
- u32 buf;
- int nbox;
- u32 boxes;
-} drm_radeon_cmd_buffer32_t;
-
-static int compat_radeon_cp_cmdbuf(struct file *file, unsigned int cmd,
- unsigned long arg)
-{
- drm_radeon_cmd_buffer32_t req32;
- drm_radeon_cmd_buffer_t __user *request;
-
- if (copy_from_user(&req32, (void __user *)arg, sizeof(req32)))
- return -EFAULT;
-
- request = compat_alloc_user_space(sizeof(*request));
- if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
- || __put_user(req32.bufsz, &request->bufsz)
- || __put_user((void __user *)(unsigned long)req32.buf,
- &request->buf)
- || __put_user(req32.nbox, &request->nbox)
- || __put_user((void __user *)(unsigned long)req32.boxes,
- &request->boxes))
- return -EFAULT;
-
- return drm_ioctl(file, DRM_IOCTL_RADEON_CMDBUF, (unsigned long)request);
-}
-
-typedef struct drm_radeon_getparam32 {
- int param;
- u32 value;
-} drm_radeon_getparam32_t;
-
-static int compat_radeon_cp_getparam(struct file *file, unsigned int cmd,
- unsigned long arg)
-{
- drm_radeon_getparam32_t req32;
- drm_radeon_getparam_t __user *request;
-
- if (copy_from_user(&req32, (void __user *)arg, sizeof(req32)))
- return -EFAULT;
-
- request = compat_alloc_user_space(sizeof(*request));
- if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
- || __put_user(req32.param, &request->param)
- || __put_user((void __user *)(unsigned long)req32.value,
- &request->value))
- return -EFAULT;
-
- return drm_ioctl(file, DRM_IOCTL_RADEON_GETPARAM, (unsigned long)request);
-}
-
-typedef struct drm_radeon_mem_alloc32 {
- int region;
- int alignment;
- int size;
- u32 region_offset; /* offset from start of fb or GART */
-} drm_radeon_mem_alloc32_t;
-
-static int compat_radeon_mem_alloc(struct file *file, unsigned int cmd,
- unsigned long arg)
-{
- drm_radeon_mem_alloc32_t req32;
- drm_radeon_mem_alloc_t __user *request;
-
- if (copy_from_user(&req32, (void __user *)arg, sizeof(req32)))
- return -EFAULT;
-
- request = compat_alloc_user_space(sizeof(*request));
- if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
- || __put_user(req32.region, &request->region)
- || __put_user(req32.alignment, &request->alignment)
- || __put_user(req32.size, &request->size)
- || __put_user((int __user *)(unsigned long)req32.region_offset,
- &request->region_offset))
- return -EFAULT;
-
- return drm_ioctl(file, DRM_IOCTL_RADEON_ALLOC, (unsigned long)request);
-}
-
-typedef struct drm_radeon_irq_emit32 {
- u32 irq_seq;
-} drm_radeon_irq_emit32_t;
-
-static int compat_radeon_irq_emit(struct file *file, unsigned int cmd,
- unsigned long arg)
-{
- drm_radeon_irq_emit32_t req32;
- drm_radeon_irq_emit_t __user *request;
-
- if (copy_from_user(&req32, (void __user *)arg, sizeof(req32)))
- return -EFAULT;
-
- request = compat_alloc_user_space(sizeof(*request));
- if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
- || __put_user((int __user *)(unsigned long)req32.irq_seq,
- &request->irq_seq))
- return -EFAULT;
-
- return drm_ioctl(file, DRM_IOCTL_RADEON_IRQ_EMIT, (unsigned long)request);
-}
-
-/* The two 64-bit arches where alignof(u64)==4 in 32-bit code */
-#if defined (CONFIG_X86_64) || defined(CONFIG_IA64)
-typedef struct drm_radeon_setparam32 {
- int param;
- u64 value;
-} __attribute__((packed)) drm_radeon_setparam32_t;
-
-static int compat_radeon_cp_setparam(struct file *file, unsigned int cmd,
- unsigned long arg)
-{
- drm_radeon_setparam32_t req32;
- drm_radeon_setparam_t __user *request;
-
- if (copy_from_user(&req32, (void __user *) arg, sizeof(req32)))
- return -EFAULT;
-
- request = compat_alloc_user_space(sizeof(*request));
- if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
- || __put_user(req32.param, &request->param)
- || __put_user((void __user *)(unsigned long)req32.value,
- &request->value))
- return -EFAULT;
-
- return drm_ioctl(file, DRM_IOCTL_RADEON_SETPARAM, (unsigned long) request);
-}
-#else
-#define compat_radeon_cp_setparam NULL
-#endif /* X86_64 || IA64 */
-
-static drm_ioctl_compat_t *radeon_compat_ioctls[] = {
- [DRM_RADEON_CP_INIT] = compat_radeon_cp_init,
- [DRM_RADEON_CLEAR] = compat_radeon_cp_clear,
- [DRM_RADEON_STIPPLE] = compat_radeon_cp_stipple,
- [DRM_RADEON_TEXTURE] = compat_radeon_cp_texture,
- [DRM_RADEON_VERTEX2] = compat_radeon_cp_vertex2,
- [DRM_RADEON_CMDBUF] = compat_radeon_cp_cmdbuf,
- [DRM_RADEON_GETPARAM] = compat_radeon_cp_getparam,
- [DRM_RADEON_SETPARAM] = compat_radeon_cp_setparam,
- [DRM_RADEON_ALLOC] = compat_radeon_mem_alloc,
- [DRM_RADEON_IRQ_EMIT] = compat_radeon_irq_emit,
-};
-
-/**
- * Called whenever a 32-bit process running under a 64-bit kernel
- * performs an ioctl on /dev/dri/card<n>.
- *
- * \param filp file pointer.
- * \param cmd command.
- * \param arg user argument.
- * \return zero on success or negative number on failure.
- */
-long radeon_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
-{
- unsigned int nr = DRM_IOCTL_NR(cmd);
- drm_ioctl_compat_t *fn = NULL;
- int ret;
-
- if (nr < DRM_COMMAND_BASE)
- return drm_compat_ioctl(filp, cmd, arg);
-
- if (nr < DRM_COMMAND_BASE + ARRAY_SIZE(radeon_compat_ioctls))
- fn = radeon_compat_ioctls[nr - DRM_COMMAND_BASE];
-
- if (fn != NULL)
- ret = (*fn) (filp, cmd, arg);
- else
- ret = drm_ioctl(filp, cmd, arg);
-
- return ret;
-}
-
-long radeon_kms_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
-{
- unsigned int nr = DRM_IOCTL_NR(cmd);
- int ret;
-
- if (nr < DRM_COMMAND_BASE)
- return drm_compat_ioctl(filp, cmd, arg);
-
- ret = radeon_drm_ioctl(filp, cmd, arg);
-
- return ret;
-}
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