/** * \file mga_ioc32.c * * 32-bit ioctl compatibility routines for the MGA DRM. * * \author Dave Airlie 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 #include #include "drmP.h" #include "drm.h" #include "mga_drm.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->f_dentry->d_inode, 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->f_dentry->d_inode, 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->f_dentry->d_inode, 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. * * \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 + DRM_ARRAY_SIZE(mga_compat_ioctls)) fn = mga_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; }
