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author | 2015-08-04 12:17:53 -0700 | |
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committer | 2015-08-04 15:44:42 -0700 | |
commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/drivers/gpu/drm/mga/mga_ioc32.c | |
parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/drivers/gpu/drm/mga/mga_ioc32.c')
-rw-r--r-- | kernel/drivers/gpu/drm/mga/mga_ioc32.c | 226 |
1 files changed, 226 insertions, 0 deletions
diff --git a/kernel/drivers/gpu/drm/mga/mga_ioc32.c b/kernel/drivers/gpu/drm/mga/mga_ioc32.c new file mode 100644 index 000000000..729bfd56b --- /dev/null +++ b/kernel/drivers/gpu/drm/mga/mga_ioc32.c @@ -0,0 +1,226 @@ +/** + * \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; +} |