| /** |
| * \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 "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 init; |
| |
| if (copy_from_user(&init32, (void __user *)arg, sizeof(init32))) |
| return -EFAULT; |
| |
| init.func = init32.func; |
| init.sarea_priv_offset = init32.sarea_priv_offset; |
| memcpy(&init.chipset, &init32.chipset, |
| offsetof(drm_mga_init_t, fb_offset) - |
| offsetof(drm_mga_init_t, chipset)); |
| init.fb_offset = init32.fb_offset; |
| init.mmio_offset = init32.mmio_offset; |
| init.status_offset = init32.status_offset; |
| init.warp_offset = init32.warp_offset; |
| init.primary_offset = init32.primary_offset; |
| init.buffers_offset = init32.buffers_offset; |
| |
| return drm_ioctl_kernel(file, mga_dma_init, &init, |
| DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY); |
| } |
| |
| 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 getparam; |
| |
| if (copy_from_user(&getparam32, (void __user *)arg, sizeof(getparam32))) |
| return -EFAULT; |
| |
| getparam.param = getparam32.param; |
| getparam.value = compat_ptr(getparam32.value); |
| return drm_ioctl_kernel(file, mga_getparam, &getparam, DRM_AUTH); |
| } |
| |
| 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 dma_bootstrap; |
| int err; |
| |
| if (copy_from_user(&dma_bootstrap32, (void __user *)arg, |
| sizeof(dma_bootstrap32))) |
| return -EFAULT; |
| |
| dma_bootstrap.texture_handle = dma_bootstrap32.texture_handle; |
| dma_bootstrap.texture_size = dma_bootstrap32.texture_size; |
| dma_bootstrap.primary_size = dma_bootstrap32.primary_size; |
| dma_bootstrap.secondary_bin_count = dma_bootstrap32.secondary_bin_count; |
| dma_bootstrap.secondary_bin_size = dma_bootstrap32.secondary_bin_size; |
| dma_bootstrap.agp_mode = dma_bootstrap32.agp_mode; |
| dma_bootstrap.agp_size = dma_bootstrap32.agp_size; |
| |
| err = drm_ioctl_kernel(file, mga_dma_bootstrap, &dma_bootstrap, |
| DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY); |
| if (err) |
| return err; |
| |
| dma_bootstrap32.texture_handle = dma_bootstrap.texture_handle; |
| dma_bootstrap32.texture_size = dma_bootstrap.texture_size; |
| dma_bootstrap32.primary_size = dma_bootstrap.primary_size; |
| dma_bootstrap32.secondary_bin_count = dma_bootstrap.secondary_bin_count; |
| dma_bootstrap32.secondary_bin_size = dma_bootstrap.secondary_bin_size; |
| dma_bootstrap32.agp_mode = dma_bootstrap.agp_mode; |
| dma_bootstrap32.agp_size = dma_bootstrap.agp_size; |
| if (copy_to_user((void __user *)arg, &dma_bootstrap32, |
| sizeof(dma_bootstrap32))) |
| return -EFAULT; |
| |
| return 0; |
| } |
| |
| static struct { |
| drm_ioctl_compat_t *fn; |
| char *name; |
| } mga_compat_ioctls[] = { |
| #define DRM_IOCTL32_DEF(n, f)[DRM_##n] = {.fn = f, .name = #n} |
| DRM_IOCTL32_DEF(MGA_INIT, compat_mga_init), |
| DRM_IOCTL32_DEF(MGA_GETPARAM, compat_mga_getparam), |
| DRM_IOCTL32_DEF(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); |
| struct drm_file *file_priv = filp->private_data; |
| 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)) |
| return drm_ioctl(filp, cmd, arg); |
| |
| fn = mga_compat_ioctls[nr - DRM_COMMAND_BASE].fn; |
| if (!fn) |
| return drm_ioctl(filp, cmd, arg); |
| |
| DRM_DEBUG("pid=%d, dev=0x%lx, auth=%d, %s\n", |
| task_pid_nr(current), |
| (long)old_encode_dev(file_priv->minor->kdev->devt), |
| file_priv->authenticated, |
| mga_compat_ioctls[nr - DRM_COMMAND_BASE].name); |
| ret = (*fn) (filp, cmd, arg); |
| if (ret) |
| DRM_DEBUG("ret = %d\n", ret); |
| return ret; |
| } |