/** * \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 "drmP.h" #include "drm.h" #include "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->f_dentry->d_inode, 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->f_dentry->d_inode, 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->f_dentry->d_inode, 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->f_dentry->d_inode, 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->f_dentry->d_inode, 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->f_dentry->d_inode, 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->f_dentry->d_inode, 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->f_dentry->d_inode, 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->f_dentry->d_inode, file, DRM_IOCTL_RADEON_IRQ_EMIT, (unsigned long)request); } 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_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 + DRM_ARRAY_SIZE(radeon_compat_ioctls)) fn = radeon_compat_ioctls[nr - DRM_COMMAND_BASE]; lock_kernel(); /* XXX for now */ if (fn != NULL) ret = (*fn) (filp, cmd, arg); else ret = drm_ioctl(filp->f_dentry->d_inode, filp, cmd, arg); unlock_kernel(); return ret; }