radeon_ioc32.c

Go to the documentation of this file.

#include <linux/compat.h>

#include <drm/drmP.h>
#include <drm/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, 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, 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, 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, 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, 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, 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, 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, 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, DRM_IOCTL_RADEON_IRQ_EMIT, (unsigned long)request);
}

/* The two 64-bit arches where alignof(u64)==4 in 32-bit code */
#if defined (CONFIG_X86_64) || defined(CONFIG_IA64)
typedef struct drm_radeon_setparam32 {
    int param;
    u64 value;
} __attribute__((packed)) drm_radeon_setparam32_t;

static int compat_radeon_cp_setparam(struct file *file, unsigned int cmd,
                     unsigned long arg)
{
    drm_radeon_setparam32_t req32;
    drm_radeon_setparam_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, DRM_IOCTL_RADEON_SETPARAM, (unsigned long) request);
}
#else
#define compat_radeon_cp_setparam NULL
#endif /* X86_64 || IA64 */

static 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_SETPARAM] = compat_radeon_cp_setparam,
    [DRM_RADEON_ALLOC] = compat_radeon_mem_alloc,
    [DRM_RADEON_IRQ_EMIT] = compat_radeon_irq_emit,
};

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];

    if (fn != NULL)
        ret = (*fn) (filp, cmd, arg);
    else
        ret = drm_ioctl(filp, cmd, arg);

    return ret;
}

long radeon_kms_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
{
    unsigned int nr = DRM_IOCTL_NR(cmd);
    int ret;

    if (nr < DRM_COMMAND_BASE)
        return drm_compat_ioctl(filp, cmd, arg);

    ret = drm_ioctl(filp, cmd, arg);

    return ret;
}