| /** |
| * \file mga_ioc32.c |
| * |
| * 32-bit ioctl compatibility routines for the MGA DRM. |
| * |
| * \author Dave Airlie <airlied@linux.ie> with code from patches by Egbert Eich |
| * |
| * |
| * Copyright (C) Paul Mackerras 2005 |
| * Copyright (C) Egbert Eich 2003,2004 |
| * Copyright (C) Dave Airlie 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/mga_drm.h> |
| #include "mga_drv.h" |
| |
| typedef struct drm32_mga_init { |
| int func; |
| u32 sarea_priv_offset; |
| int chipset; |
| int sgram; |
| unsigned int maccess; |
| unsigned int fb_cpp; |
| unsigned int front_offset, front_pitch; |
| unsigned int back_offset, back_pitch; |
| unsigned int depth_cpp; |
| unsigned int depth_offset, depth_pitch; |
| unsigned int texture_offset[MGA_NR_TEX_HEAPS]; |
| unsigned int texture_size[MGA_NR_TEX_HEAPS]; |
| u32 fb_offset; |
| u32 mmio_offset; |
| u32 status_offset; |
| u32 warp_offset; |
| u32 primary_offset; |
| u32 buffers_offset; |
| } drm_mga_init32_t; |
| |
| static int compat_mga_init(struct file *file, unsigned int cmd, |
| unsigned long arg) |
| { |
| drm_mga_init32_t init32; |
| drm_mga_init_t __user *init; |
| int err = 0, i; |
| |
| 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.chipset, &init->chipset) |
| || __put_user(init32.sgram, &init->sgram) |
| || __put_user(init32.maccess, &init->maccess) |
| || __put_user(init32.fb_cpp, &init->fb_cpp) |
| || __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_cpp, &init->depth_cpp) |
| || __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.status_offset, &init->status_offset) |
| || __put_user(init32.warp_offset, &init->warp_offset) |
| || __put_user(init32.primary_offset, &init->primary_offset) |
| || __put_user(init32.buffers_offset, &init->buffers_offset)) |
| return -EFAULT; |
| |
| for (i = 0; i < MGA_NR_TEX_HEAPS; i++) { |
| err |= |
| __put_user(init32.texture_offset[i], |
| &init->texture_offset[i]); |
| err |= |
| __put_user(init32.texture_size[i], &init->texture_size[i]); |
| } |
| if (err) |
| return -EFAULT; |
| |
| return drm_ioctl(file, DRM_IOCTL_MGA_INIT, (unsigned long)init); |
| } |
| |
| typedef struct drm_mga_getparam32 { |
| int param; |
| u32 value; |
| } drm_mga_getparam32_t; |
| |
| static int compat_mga_getparam(struct file *file, unsigned int cmd, |
| unsigned long arg) |
| { |
| drm_mga_getparam32_t getparam32; |
| drm_mga_getparam_t __user *getparam; |
| |
| if (copy_from_user(&getparam32, (void __user *)arg, sizeof(getparam32))) |
| return -EFAULT; |
| |
| getparam = compat_alloc_user_space(sizeof(*getparam)); |
| if (!access_ok(VERIFY_WRITE, getparam, sizeof(*getparam)) |
| || __put_user(getparam32.param, &getparam->param) |
| || __put_user((void __user *)(unsigned long)getparam32.value, |
| &getparam->value)) |
| return -EFAULT; |
| |
| return drm_ioctl(file, DRM_IOCTL_MGA_GETPARAM, (unsigned long)getparam); |
| } |
| |
| typedef struct drm_mga_drm_bootstrap32 { |
| u32 texture_handle; |
| u32 texture_size; |
| u32 primary_size; |
| u32 secondary_bin_count; |
| u32 secondary_bin_size; |
| u32 agp_mode; |
| u8 agp_size; |
| } drm_mga_dma_bootstrap32_t; |
| |
| static int compat_mga_dma_bootstrap(struct file *file, unsigned int cmd, |
| unsigned long arg) |
| { |
| drm_mga_dma_bootstrap32_t dma_bootstrap32; |
| drm_mga_dma_bootstrap_t __user *dma_bootstrap; |
| int err; |
| |
| if (copy_from_user(&dma_bootstrap32, (void __user *)arg, |
| sizeof(dma_bootstrap32))) |
| return -EFAULT; |
| |
| dma_bootstrap = compat_alloc_user_space(sizeof(*dma_bootstrap)); |
| if (!access_ok(VERIFY_WRITE, dma_bootstrap, sizeof(*dma_bootstrap)) |
| || __put_user(dma_bootstrap32.texture_handle, |
| &dma_bootstrap->texture_handle) |
| || __put_user(dma_bootstrap32.texture_size, |
| &dma_bootstrap->texture_size) |
| || __put_user(dma_bootstrap32.primary_size, |
| &dma_bootstrap->primary_size) |
| || __put_user(dma_bootstrap32.secondary_bin_count, |
| &dma_bootstrap->secondary_bin_count) |
| || __put_user(dma_bootstrap32.secondary_bin_size, |
| &dma_bootstrap->secondary_bin_size) |
| || __put_user(dma_bootstrap32.agp_mode, &dma_bootstrap->agp_mode) |
| || __put_user(dma_bootstrap32.agp_size, &dma_bootstrap->agp_size)) |
| return -EFAULT; |
| |
| err = drm_ioctl(file, DRM_IOCTL_MGA_DMA_BOOTSTRAP, |
| (unsigned long)dma_bootstrap); |
| if (err) |
| return err; |
| |
| if (__get_user(dma_bootstrap32.texture_handle, |
| &dma_bootstrap->texture_handle) |
| || __get_user(dma_bootstrap32.texture_size, |
| &dma_bootstrap->texture_size) |
| || __get_user(dma_bootstrap32.primary_size, |
| &dma_bootstrap->primary_size) |
| || __get_user(dma_bootstrap32.secondary_bin_count, |
| &dma_bootstrap->secondary_bin_count) |
| || __get_user(dma_bootstrap32.secondary_bin_size, |
| &dma_bootstrap->secondary_bin_size) |
| || __get_user(dma_bootstrap32.agp_mode, &dma_bootstrap->agp_mode) |
| || __get_user(dma_bootstrap32.agp_size, &dma_bootstrap->agp_size)) |
| return -EFAULT; |
| |
| if (copy_to_user((void __user *)arg, &dma_bootstrap32, |
| sizeof(dma_bootstrap32))) |
| return -EFAULT; |
| |
| return 0; |
| } |
| |
| drm_ioctl_compat_t *mga_compat_ioctls[] = { |
| [DRM_MGA_INIT] = compat_mga_init, |
| [DRM_MGA_GETPARAM] = compat_mga_getparam, |
| [DRM_MGA_DMA_BOOTSTRAP] = compat_mga_dma_bootstrap, |
| }; |
| |
| /** |
| * 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 mga_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(mga_compat_ioctls)) |
| fn = mga_compat_ioctls[nr - DRM_COMMAND_BASE]; |
| |
| if (fn != NULL) |
| ret = (*fn) (filp, cmd, arg); |
| else |
| ret = drm_ioctl(filp, cmd, arg); |
| |
| return ret; |
| } |
