/* i810_dma.c -- DMA support for the i810 -*- linux-c -*- * Created: Mon Dec 13 01:50:01 1999 by jhartmann@precisioninsight.com * * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas. * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California. * 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 * PRECISION INSIGHT AND/OR ITS SUPPLIERS 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. * * Authors: Rickard E. (Rik) Faith * Jeff Hartmann * Keith Whitwell * */ #include "i810.h" #include "drmP.h" #include "drm.h" #include "i810_drm.h" #include "i810_drv.h" #include /* For task queue support */ #include #include #ifdef DO_MUNMAP_4_ARGS #define DO_MUNMAP(m, a, l) do_munmap(m, a, l, 1) #else #define DO_MUNMAP(m, a, l) do_munmap(m, a, l) #endif #define I810_BUF_FREE 2 #define I810_BUF_CLIENT 1 #define I810_BUF_HARDWARE 0 #define I810_BUF_UNMAPPED 0 #define I810_BUF_MAPPED 1 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,4,2) #define down_write down #define up_write up #endif static inline void i810_print_status_page(drm_device_t *dev) { drm_device_dma_t *dma = dev->dma; drm_i810_private_t *dev_priv = dev->dev_private; u32 *temp = dev_priv->hw_status_page; int i; DRM_DEBUG( "hw_status: Interrupt Status : %x\n", temp[0]); DRM_DEBUG( "hw_status: LpRing Head ptr : %x\n", temp[1]); DRM_DEBUG( "hw_status: IRing Head ptr : %x\n", temp[2]); DRM_DEBUG( "hw_status: Reserved : %x\n", temp[3]); DRM_DEBUG( "hw_status: Last Render: %x\n", temp[4]); DRM_DEBUG( "hw_status: Driver Counter : %d\n", temp[5]); for(i = 6; i < dma->buf_count + 6; i++) { DRM_DEBUG( "buffer status idx : %d used: %d\n", i - 6, temp[i]); } } static drm_buf_t *i810_freelist_get(drm_device_t *dev) { drm_device_dma_t *dma = dev->dma; int i; int used; /* Linear search might not be the best solution */ for (i = 0; i < dma->buf_count; i++) { drm_buf_t *buf = dma->buflist[ i ]; drm_i810_buf_priv_t *buf_priv = buf->dev_private; /* In use is already a pointer */ used = cmpxchg(buf_priv->in_use, I810_BUF_FREE, I810_BUF_CLIENT); if (used == I810_BUF_FREE) { return buf; } } return NULL; } /* This should only be called if the buffer is not sent to the hardware * yet, the hardware updates in use for us once its on the ring buffer. */ static int i810_freelist_put(drm_device_t *dev, drm_buf_t *buf) { drm_i810_buf_priv_t *buf_priv = buf->dev_private; int used; /* In use is already a pointer */ used = cmpxchg(buf_priv->in_use, I810_BUF_CLIENT, I810_BUF_FREE); if (used != I810_BUF_CLIENT) { DRM_ERROR("Freeing buffer thats not in use : %d\n", buf->idx); return -EINVAL; } return 0; } static struct file_operations i810_buffer_fops = { .open = DRM(open), .flush = DRM(flush), .release = DRM(release), .ioctl = DRM(ioctl), .mmap = i810_mmap_buffers, .fasync = DRM(fasync), }; int i810_mmap_buffers(struct file *filp, struct vm_area_struct *vma) { drm_file_t *priv = filp->private_data; drm_device_t *dev; drm_i810_private_t *dev_priv; drm_buf_t *buf; drm_i810_buf_priv_t *buf_priv; lock_kernel(); dev = priv->dev; dev_priv = dev->dev_private; buf = dev_priv->mmap_buffer; buf_priv = buf->dev_private; vma->vm_flags |= (VM_IO | VM_DONTCOPY); vma->vm_file = filp; buf_priv->currently_mapped = I810_BUF_MAPPED; unlock_kernel(); if (remap_page_range(DRM_RPR_ARG(vma) vma->vm_start, VM_OFFSET(vma), vma->vm_end - vma->vm_start, vma->vm_page_prot)) return -EAGAIN; return 0; } static int i810_map_buffer(drm_buf_t *buf, struct file *filp) { drm_file_t *priv = filp->private_data; drm_device_t *dev = priv->dev; drm_i810_buf_priv_t *buf_priv = buf->dev_private; drm_i810_private_t *dev_priv = dev->dev_private; struct file_operations *old_fops; int retcode = 0; if (buf_priv->currently_mapped == I810_BUF_MAPPED) return -EINVAL; down_write( ¤t->mm->mmap_sem ); old_fops = filp->f_op; filp->f_op = &i810_buffer_fops; dev_priv->mmap_buffer = buf; buf_priv->virtual = (void *)do_mmap(filp, 0, buf->total, PROT_READ|PROT_WRITE, MAP_SHARED, buf->bus_address); dev_priv->mmap_buffer = NULL; filp->f_op = old_fops; if ((unsigned long)buf_priv->virtual > -1024UL) { /* Real error */ DRM_ERROR("mmap error\n"); retcode = (signed int)buf_priv->virtual; buf_priv->virtual = NULL; } up_write( ¤t->mm->mmap_sem ); return retcode; } static int i810_unmap_buffer(drm_buf_t *buf) { drm_i810_buf_priv_t *buf_priv = buf->dev_private; int retcode = 0; if (buf_priv->currently_mapped != I810_BUF_MAPPED) return -EINVAL; down_write(¤t->mm->mmap_sem); retcode = DO_MUNMAP(current->mm, (unsigned long)buf_priv->virtual, (size_t) buf->total); up_write(¤t->mm->mmap_sem); buf_priv->currently_mapped = I810_BUF_UNMAPPED; buf_priv->virtual = NULL; return retcode; } static int i810_dma_get_buffer(drm_device_t *dev, drm_i810_dma_t *d, struct file *filp) { drm_buf_t *buf; drm_i810_buf_priv_t *buf_priv; int retcode = 0; buf = i810_freelist_get(dev); if (!buf) { retcode = -ENOMEM; DRM_DEBUG("retcode=%d\n", retcode); return retcode; } retcode = i810_map_buffer(buf, filp); if (retcode) { i810_freelist_put(dev, buf); DRM_ERROR("mapbuf failed, retcode %d\n", retcode); return retcode; } buf->filp = filp; buf_priv = buf->dev_private; d->granted = 1; d->request_idx = buf->idx; d->request_size = buf->total; d->virtual = buf_priv->virtual; return retcode; } int i810_dma_cleanup(drm_device_t *dev) { drm_device_dma_t *dma = dev->dma; /* Make sure interrupts are disabled here because the uninstall ioctl * may not have been called from userspace and after dev_private * is freed, it's too late. */ if (drm_core_check_feature(dev, DRIVER_HAVE_IRQ) && dev->irq_enabled) DRM(irq_uninstall)(dev); if (dev->dev_private) { int i; drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private; if (dev_priv->ring.virtual_start) { DRM(ioremapfree)((void *) dev_priv->ring.virtual_start, dev_priv->ring.Size, dev); } if (dev_priv->hw_status_page) { pci_free_consistent(dev->pdev, PAGE_SIZE, dev_priv->hw_status_page, dev_priv->dma_status_page); /* Need to rewrite hardware status page */ I810_WRITE(0x02080, 0x1ffff000); } DRM(free)(dev->dev_private, sizeof(drm_i810_private_t), DRM_MEM_DRIVER); dev->dev_private = NULL; for (i = 0; i < dma->buf_count; i++) { drm_buf_t *buf = dma->buflist[ i ]; drm_i810_buf_priv_t *buf_priv = buf->dev_private; if ( buf_priv->kernel_virtual && buf->total ) DRM(ioremapfree)(buf_priv->kernel_virtual, buf->total, dev); } } return 0; } static int i810_wait_ring(drm_device_t *dev, int n) { drm_i810_private_t *dev_priv = dev->dev_private; drm_i810_ring_buffer_t *ring = &(dev_priv->ring); int iters = 0; unsigned long end; unsigned int last_head = I810_READ(LP_RING + RING_HEAD) & HEAD_ADDR; end = jiffies + (HZ*3); while (ring->space < n) { ring->head = I810_READ(LP_RING + RING_HEAD) & HEAD_ADDR; ring->space = ring->head - (ring->tail+8); if (ring->space < 0) ring->space += ring->Size; if (ring->head != last_head) { end = jiffies + (HZ*3); last_head = ring->head; } iters++; if (time_before(end, jiffies)) { DRM_ERROR("space: %d wanted %d\n", ring->space, n); DRM_ERROR("lockup\n"); goto out_wait_ring; } udelay(1); } out_wait_ring: return iters; } static void i810_kernel_lost_context(drm_device_t *dev) { drm_i810_private_t *dev_priv = dev->dev_private; drm_i810_ring_buffer_t *ring = &(dev_priv->ring); ring->head = I810_READ(LP_RING + RING_HEAD) & HEAD_ADDR; ring->tail = I810_READ(LP_RING + RING_TAIL); ring->space = ring->head - (ring->tail+8); if (ring->space < 0) ring->space += ring->Size; } static int i810_freelist_init(drm_device_t *dev, drm_i810_private_t *dev_priv) { drm_device_dma_t *dma = dev->dma; int my_idx = 24; u32 *hw_status = (u32 *)(dev_priv->hw_status_page + my_idx); int i; if (dma->buf_count > 1019) { /* Not enough space in the status page for the freelist */ return -EINVAL; } for (i = 0; i < dma->buf_count; i++) { drm_buf_t *buf = dma->buflist[ i ]; drm_i810_buf_priv_t *buf_priv = buf->dev_private; buf_priv->in_use = hw_status++; buf_priv->my_use_idx = my_idx; my_idx += 4; *buf_priv->in_use = I810_BUF_FREE; buf_priv->kernel_virtual = DRM(ioremap)(buf->bus_address, buf->total, dev); } return 0; } static int i810_dma_initialize(drm_device_t *dev, drm_i810_private_t *dev_priv, drm_i810_init_t *init) { struct list_head *list; memset(dev_priv, 0, sizeof(drm_i810_private_t)); list_for_each(list, &dev->maplist->head) { drm_map_list_t *r_list = list_entry(list, drm_map_list_t, head); if (r_list->map && r_list->map->type == _DRM_SHM && r_list->map->flags & _DRM_CONTAINS_LOCK ) { dev_priv->sarea_map = r_list->map; break; } } if (!dev_priv->sarea_map) { dev->dev_private = (void *)dev_priv; i810_dma_cleanup(dev); DRM_ERROR("can not find sarea!\n"); return -EINVAL; } dev_priv->mmio_map = drm_core_findmap(dev, init->mmio_offset); if (!dev_priv->mmio_map) { dev->dev_private = (void *)dev_priv; i810_dma_cleanup(dev); DRM_ERROR("can not find mmio map!\n"); return -EINVAL; } dev->agp_buffer_map = drm_core_findmap(dev, init->buffers_offset); if (!dev->agp_buffer_map) { dev->dev_private = (void *)dev_priv; i810_dma_cleanup(dev); DRM_ERROR("can not find dma buffer map!\n"); return -EINVAL; } dev_priv->sarea_priv = (drm_i810_sarea_t *) ((u8 *)dev_priv->sarea_map->handle + init->sarea_priv_offset); dev_priv->ring.Start = init->ring_start; dev_priv->ring.End = init->ring_end; dev_priv->ring.Size = init->ring_size; dev_priv->ring.virtual_start = DRM(ioremap)(dev->agp->base + init->ring_start, init->ring_size, dev); if (dev_priv->ring.virtual_start == NULL) { dev->dev_private = (void *) dev_priv; i810_dma_cleanup(dev); DRM_ERROR("can not ioremap virtual address for" " ring buffer\n"); return -ENOMEM; } dev_priv->ring.tail_mask = dev_priv->ring.Size - 1; dev_priv->w = init->w; dev_priv->h = init->h; dev_priv->pitch = init->pitch; dev_priv->back_offset = init->back_offset; dev_priv->depth_offset = init->depth_offset; dev_priv->front_offset = init->front_offset; dev_priv->overlay_offset = init->overlay_offset; dev_priv->overlay_physical = init->overlay_physical; dev_priv->front_di1 = init->front_offset | init->pitch_bits; dev_priv->back_di1 = init->back_offset | init->pitch_bits; dev_priv->zi1 = init->depth_offset | init->pitch_bits; /* Program Hardware Status Page */ dev_priv->hw_status_page = pci_alloc_consistent(dev->pdev, PAGE_SIZE, &dev_priv->dma_status_page); if (!dev_priv->hw_status_page) { dev->dev_private = (void *)dev_priv; i810_dma_cleanup(dev); DRM_ERROR("Can not allocate hardware status page\n"); return -ENOMEM; } memset(dev_priv->hw_status_page, 0, PAGE_SIZE); DRM_DEBUG("hw status page @ %p\n", dev_priv->hw_status_page); I810_WRITE(0x02080, dev_priv->dma_status_page); DRM_DEBUG("Enabled hardware status page\n"); /* Now we need to init our freelist */ if (i810_freelist_init(dev, dev_priv) != 0) { dev->dev_private = (void *)dev_priv; i810_dma_cleanup(dev); DRM_ERROR("Not enough space in the status page for" " the freelist\n"); return -ENOMEM; } dev->dev_private = (void *)dev_priv; return 0; } /* i810 DRM version 1.1 used a smaller init structure with different * ordering of values than is currently used (drm >= 1.2). There is * no defined way to detect the XFree version to correct this problem, * however by checking using this procedure we can detect the correct * thing to do. * * #1 Read the Smaller init structure from user-space * #2 Verify the overlay_physical is a valid physical address, or NULL * If it isn't then we have a v1.1 client. Fix up params. * If it is, then we have a 1.2 client... get the rest of the data. */ int i810_dma_init_compat(drm_i810_init_t *init, unsigned long arg) { /* Get v1.1 init data */ if (copy_from_user(init, (drm_i810_pre12_init_t __user *)arg, sizeof(drm_i810_pre12_init_t))) { return -EFAULT; } if ((!init->overlay_physical) || (init->overlay_physical > 4096)) { /* This is a v1.2 client, just get the v1.2 init data */ DRM_INFO("Using POST v1.2 init.\n"); if (copy_from_user(init, (drm_i810_init_t __user *)arg, sizeof(drm_i810_init_t))) { return -EFAULT; } } else { /* This is a v1.1 client, fix the params */ DRM_INFO("Using PRE v1.2 init.\n"); init->pitch_bits = init->h; init->pitch = init->w; init->h = init->overlay_physical; init->w = init->overlay_offset; init->overlay_physical = 0; init->overlay_offset = 0; } return 0; } int i810_dma_init(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg) { drm_file_t *priv = filp->private_data; drm_device_t *dev = priv->dev; drm_i810_private_t *dev_priv; drm_i810_init_t init; int retcode = 0; /* Get only the init func */ if (copy_from_user(&init, (void __user *)arg, sizeof(drm_i810_init_func_t))) return -EFAULT; switch(init.func) { case I810_INIT_DMA: /* This case is for backward compatibility. It * handles XFree 4.1.0 and 4.2.0, and has to * do some parameter checking as described below. * It will someday go away. */ retcode = i810_dma_init_compat(&init, arg); if (retcode) return retcode; dev_priv = DRM(alloc)(sizeof(drm_i810_private_t), DRM_MEM_DRIVER); if (dev_priv == NULL) return -ENOMEM; retcode = i810_dma_initialize(dev, dev_priv, &init); break; default: case I810_INIT_DMA_1_4: DRM_INFO("Using v1.4 init.\n"); if (copy_from_user(&init, (drm_i810_init_t __user *)arg, sizeof(drm_i810_init_t))) { return -EFAULT; } dev_priv = DRM(alloc)(sizeof(drm_i810_private_t), DRM_MEM_DRIVER); if (dev_priv == NULL) return -ENOMEM; retcode = i810_dma_initialize(dev, dev_priv, &init); break; case I810_CLEANUP_DMA: DRM_INFO("DMA Cleanup\n"); retcode = i810_dma_cleanup(dev); break; } return retcode; } /* Most efficient way to verify state for the i810 is as it is * emitted. Non-conformant state is silently dropped. * * Use 'volatile' & local var tmp to force the emitted values to be * identical to the verified ones. */ static void i810EmitContextVerified( drm_device_t *dev, volatile unsigned int *code ) { drm_i810_private_t *dev_priv = dev->dev_private; int i, j = 0; unsigned int tmp; RING_LOCALS; BEGIN_LP_RING( I810_CTX_SETUP_SIZE ); OUT_RING( GFX_OP_COLOR_FACTOR ); OUT_RING( code[I810_CTXREG_CF1] ); OUT_RING( GFX_OP_STIPPLE ); OUT_RING( code[I810_CTXREG_ST1] ); for ( i = 4 ; i < I810_CTX_SETUP_SIZE ; i++ ) { tmp = code[i]; if ((tmp & (7<<29)) == (3<<29) && (tmp & (0x1f<<24)) < (0x1d<<24)) { OUT_RING( tmp ); j++; } else printk("constext state dropped!!!\n"); } if (j & 1) OUT_RING( 0 ); ADVANCE_LP_RING(); } static void i810EmitTexVerified( drm_device_t *dev, volatile unsigned int *code ) { drm_i810_private_t *dev_priv = dev->dev_private; int i, j = 0; unsigned int tmp; RING_LOCALS; BEGIN_LP_RING( I810_TEX_SETUP_SIZE ); OUT_RING( GFX_OP_MAP_INFO ); OUT_RING( code[I810_TEXREG_MI1] ); OUT_RING( code[I810_TEXREG_MI2] ); OUT_RING( code[I810_TEXREG_MI3] ); for ( i = 4 ; i < I810_TEX_SETUP_SIZE ; i++ ) { tmp = code[i]; if ((tmp & (7<<29)) == (3<<29) && (tmp & (0x1f<<24)) < (0x1d<<24)) { OUT_RING( tmp ); j++; } else printk("texture state dropped!!!\n"); } if (j & 1) OUT_RING( 0 ); ADVANCE_LP_RING(); } /* Need to do some additional checking when setting the dest buffer. */ static void i810EmitDestVerified( drm_device_t *dev, volatile unsigned int *code ) { drm_i810_private_t *dev_priv = dev->dev_private; unsigned int tmp; RING_LOCALS; BEGIN_LP_RING( I810_DEST_SETUP_SIZE + 2 ); tmp = code[I810_DESTREG_DI1]; if (tmp == dev_priv->front_di1 || tmp == dev_priv->back_di1) { OUT_RING( CMD_OP_DESTBUFFER_INFO ); OUT_RING( tmp ); } else DRM_DEBUG("bad di1 %x (allow %x or %x)\n", tmp, dev_priv->front_di1, dev_priv->back_di1); /* invarient: */ OUT_RING( CMD_OP_Z_BUFFER_INFO ); OUT_RING( dev_priv->zi1 ); OUT_RING( GFX_OP_DESTBUFFER_VARS ); OUT_RING( code[I810_DESTREG_DV1] ); OUT_RING( GFX_OP_DRAWRECT_INFO ); OUT_RING( code[I810_DESTREG_DR1] ); OUT_RING( code[I810_DESTREG_DR2] ); OUT_RING( code[I810_DESTREG_DR3] ); OUT_RING( code[I810_DESTREG_DR4] ); OUT_RING( 0 ); ADVANCE_LP_RING(); } static void i810EmitState( drm_device_t *dev ) { drm_i810_private_t *dev_priv = dev->dev_private; drm_i810_sarea_t *sarea_priv = dev_priv->sarea_priv; unsigned int dirty = sarea_priv->dirty; DRM_DEBUG("%s %x\n", __FUNCTION__, dirty); if (dirty & I810_UPLOAD_BUFFERS) { i810EmitDestVerified( dev, sarea_priv->BufferState ); sarea_priv->dirty &= ~I810_UPLOAD_BUFFERS; } if (dirty & I810_UPLOAD_CTX) { i810EmitContextVerified( dev, sarea_priv->ContextState ); sarea_priv->dirty &= ~I810_UPLOAD_CTX; } if (dirty & I810_UPLOAD_TEX0) { i810EmitTexVerified( dev, sarea_priv->TexState[0] ); sarea_priv->dirty &= ~I810_UPLOAD_TEX0; } if (dirty & I810_UPLOAD_TEX1) { i810EmitTexVerified( dev, sarea_priv->TexState[1] ); sarea_priv->dirty &= ~I810_UPLOAD_TEX1; } } /* need to verify */ static void i810_dma_dispatch_clear( drm_device_t *dev, int flags, unsigned int clear_color, unsigned int clear_zval ) { drm_i810_private_t *dev_priv = dev->dev_private; drm_i810_sarea_t *sarea_priv = dev_priv->sarea_priv; int nbox = sarea_priv->nbox; drm_clip_rect_t *pbox = sarea_priv->boxes; int pitch = dev_priv->pitch; int cpp = 2; int i; RING_LOCALS; if ( dev_priv->current_page == 1 ) { unsigned int tmp = flags; flags &= ~(I810_FRONT | I810_BACK); if (tmp & I810_FRONT) flags |= I810_BACK; if (tmp & I810_BACK) flags |= I810_FRONT; } i810_kernel_lost_context(dev); if (nbox > I810_NR_SAREA_CLIPRECTS) nbox = I810_NR_SAREA_CLIPRECTS; for (i = 0 ; i < nbox ; i++, pbox++) { unsigned int x = pbox->x1; unsigned int y = pbox->y1; unsigned int width = (pbox->x2 - x) * cpp; unsigned int height = pbox->y2 - y; unsigned int start = y * pitch + x * cpp; if (pbox->x1 > pbox->x2 || pbox->y1 > pbox->y2 || pbox->x2 > dev_priv->w || pbox->y2 > dev_priv->h) continue; if ( flags & I810_FRONT ) { BEGIN_LP_RING( 6 ); OUT_RING( BR00_BITBLT_CLIENT | BR00_OP_COLOR_BLT | 0x3 ); OUT_RING( BR13_SOLID_PATTERN | (0xF0 << 16) | pitch ); OUT_RING( (height << 16) | width ); OUT_RING( start ); OUT_RING( clear_color ); OUT_RING( 0 ); ADVANCE_LP_RING(); } if ( flags & I810_BACK ) { BEGIN_LP_RING( 6 ); OUT_RING( BR00_BITBLT_CLIENT | BR00_OP_COLOR_BLT | 0x3 ); OUT_RING( BR13_SOLID_PATTERN | (0xF0 << 16) | pitch ); OUT_RING( (height << 16) | width ); OUT_RING( dev_priv->back_offset + start ); OUT_RING( clear_color ); OUT_RING( 0 ); ADVANCE_LP_RING(); } if ( flags & I810_DEPTH ) { BEGIN_LP_RING( 6 ); OUT_RING( BR00_BITBLT_CLIENT | BR00_OP_COLOR_BLT | 0x3 ); OUT_RING( BR13_SOLID_PATTERN | (0xF0 << 16) | pitch ); OUT_RING( (height << 16) | width ); OUT_RING( dev_priv->depth_offset + start ); OUT_RING( clear_zval ); OUT_RING( 0 ); ADVANCE_LP_RING(); } } } static void i810_dma_dispatch_swap( drm_device_t *dev ) { drm_i810_private_t *dev_priv = dev->dev_private; drm_i810_sarea_t *sarea_priv = dev_priv->sarea_priv; int nbox = sarea_priv->nbox; drm_clip_rect_t *pbox = sarea_priv->boxes; int pitch = dev_priv->pitch; int cpp = 2; int i; RING_LOCALS; DRM_DEBUG("swapbuffers\n"); i810_kernel_lost_context(dev); if (nbox > I810_NR_SAREA_CLIPRECTS) nbox = I810_NR_SAREA_CLIPRECTS; for (i = 0 ; i < nbox; i++, pbox++) { unsigned int w = pbox->x2 - pbox->x1; unsigned int h = pbox->y2 - pbox->y1; unsigned int dst = pbox->x1*cpp + pbox->y1*pitch; unsigned int start = dst; if (pbox->x1 > pbox->x2 || pbox->y1 > pbox->y2 || pbox->x2 > dev_priv->w || pbox->y2 > dev_priv->h) continue; BEGIN_LP_RING( 6 ); OUT_RING( BR00_BITBLT_CLIENT | BR00_OP_SRC_COPY_BLT | 0x4 ); OUT_RING( pitch | (0xCC << 16)); OUT_RING( (h << 16) | (w * cpp)); if (dev_priv->current_page == 0) OUT_RING(dev_priv->front_offset + start); else OUT_RING(dev_priv->back_offset + start); OUT_RING( pitch ); if (dev_priv->current_page == 0) OUT_RING(dev_priv->back_offset + start); else OUT_RING(dev_priv->front_offset + start); ADVANCE_LP_RING(); } } static void i810_dma_dispatch_vertex(drm_device_t *dev, drm_buf_t *buf, int discard, int used) { drm_i810_private_t *dev_priv = dev->dev_private; drm_i810_buf_priv_t *buf_priv = buf->dev_private; drm_i810_sarea_t *sarea_priv = dev_priv->sarea_priv; drm_clip_rect_t *box = sarea_priv->boxes; int nbox = sarea_priv->nbox; unsigned long address = (unsigned long)buf->bus_address; unsigned long start = address - dev->agp->base; int i = 0; RING_LOCALS; i810_kernel_lost_context(dev); if (nbox > I810_NR_SAREA_CLIPRECTS) nbox = I810_NR_SAREA_CLIPRECTS; if (used > 4*1024) used = 0; if (sarea_priv->dirty) i810EmitState( dev ); if (buf_priv->currently_mapped == I810_BUF_MAPPED) { unsigned int prim = (sarea_priv->vertex_prim & PR_MASK); *(u32 *)buf_priv->kernel_virtual = ((GFX_OP_PRIMITIVE | prim | ((used/4)-2))); if (used & 4) { *(u32 *)((u32)buf_priv->kernel_virtual + used) = 0; used += 4; } i810_unmap_buffer(buf); } if (used) { do { if (i < nbox) { BEGIN_LP_RING(4); OUT_RING( GFX_OP_SCISSOR | SC_UPDATE_SCISSOR | SC_ENABLE ); OUT_RING( GFX_OP_SCISSOR_INFO ); OUT_RING( box[i].x1 | (box[i].y1<<16) ); OUT_RING( (box[i].x2-1) | ((box[i].y2-1)<<16) ); ADVANCE_LP_RING(); } BEGIN_LP_RING(4); OUT_RING( CMD_OP_BATCH_BUFFER ); OUT_RING( start | BB1_PROTECTED ); OUT_RING( start + used - 4 ); OUT_RING( 0 ); ADVANCE_LP_RING(); } while (++i < nbox); } if (discard) { dev_priv->counter++; (void) cmpxchg(buf_priv->in_use, I810_BUF_CLIENT, I810_BUF_HARDWARE); BEGIN_LP_RING(8); OUT_RING( CMD_STORE_DWORD_IDX ); OUT_RING( 20 ); OUT_RING( dev_priv->counter ); OUT_RING( CMD_STORE_DWORD_IDX ); OUT_RING( buf_priv->my_use_idx ); OUT_RING( I810_BUF_FREE ); OUT_RING( CMD_REPORT_HEAD ); OUT_RING( 0 ); ADVANCE_LP_RING(); } } static void i810_dma_dispatch_flip( drm_device_t *dev ) { drm_i810_private_t *dev_priv = dev->dev_private; int pitch = dev_priv->pitch; RING_LOCALS; DRM_DEBUG( "%s: page=%d pfCurrentPage=%d\n", __FUNCTION__, dev_priv->current_page, dev_priv->sarea_priv->pf_current_page); i810_kernel_lost_context(dev); BEGIN_LP_RING( 2 ); OUT_RING( INST_PARSER_CLIENT | INST_OP_FLUSH | INST_FLUSH_MAP_CACHE ); OUT_RING( 0 ); ADVANCE_LP_RING(); BEGIN_LP_RING( I810_DEST_SETUP_SIZE + 2 ); /* On i815 at least ASYNC is buggy */ /* pitch<<5 is from 11.2.8 p158, its the pitch / 8 then left shifted 8, so (pitch >> 3) << 8 */ OUT_RING( CMD_OP_FRONTBUFFER_INFO | (pitch<<5) /*| ASYNC_FLIP */ ); if ( dev_priv->current_page == 0 ) { OUT_RING( dev_priv->back_offset ); dev_priv->current_page = 1; } else { OUT_RING( dev_priv->front_offset ); dev_priv->current_page = 0; } OUT_RING(0); ADVANCE_LP_RING(); BEGIN_LP_RING(2); OUT_RING( CMD_OP_WAIT_FOR_EVENT | WAIT_FOR_PLANE_A_FLIP ); OUT_RING( 0 ); ADVANCE_LP_RING(); /* Increment the frame counter. The client-side 3D driver must * throttle the framerate by waiting for this value before * performing the swapbuffer ioctl. */ dev_priv->sarea_priv->pf_current_page = dev_priv->current_page; } void i810_dma_quiescent(drm_device_t *dev) { drm_i810_private_t *dev_priv = dev->dev_private; RING_LOCALS; /* printk("%s\n", __FUNCTION__); */ i810_kernel_lost_context(dev); BEGIN_LP_RING(4); OUT_RING( INST_PARSER_CLIENT | INST_OP_FLUSH | INST_FLUSH_MAP_CACHE ); OUT_RING( CMD_REPORT_HEAD ); OUT_RING( 0 ); OUT_RING( 0 ); ADVANCE_LP_RING(); i810_wait_ring( dev, dev_priv->ring.Size - 8 ); } static int i810_flush_queue(drm_device_t *dev) { drm_i810_private_t *dev_priv = dev->dev_private; drm_device_dma_t *dma = dev->dma; int i, ret = 0; RING_LOCALS; /* printk("%s\n", __FUNCTION__); */ i810_kernel_lost_context(dev); BEGIN_LP_RING(2); OUT_RING( CMD_REPORT_HEAD ); OUT_RING( 0 ); ADVANCE_LP_RING(); i810_wait_ring( dev, dev_priv->ring.Size - 8 ); for (i = 0; i < dma->buf_count; i++) { drm_buf_t *buf = dma->buflist[ i ]; drm_i810_buf_priv_t *buf_priv = buf->dev_private; int used = cmpxchg(buf_priv->in_use, I810_BUF_HARDWARE, I810_BUF_FREE); if (used == I810_BUF_HARDWARE) DRM_DEBUG("reclaimed from HARDWARE\n"); if (used == I810_BUF_CLIENT) DRM_DEBUG("still on client\n"); } return ret; } /* Must be called with the lock held */ void i810_reclaim_buffers(struct file *filp) { drm_file_t *priv = filp->private_data; drm_device_t *dev = priv->dev; drm_device_dma_t *dma = dev->dma; int i; if (!dma) return; if (!dev->dev_private) return; if (!dma->buflist) return; i810_flush_queue(dev); for (i = 0; i < dma->buf_count; i++) { drm_buf_t *buf = dma->buflist[ i ]; drm_i810_buf_priv_t *buf_priv = buf->dev_private; if (buf->filp == filp && buf_priv) { int used = cmpxchg(buf_priv->in_use, I810_BUF_CLIENT, I810_BUF_FREE); if (used == I810_BUF_CLIENT) DRM_DEBUG("reclaimed from client\n"); if (buf_priv->currently_mapped == I810_BUF_MAPPED) buf_priv->currently_mapped = I810_BUF_UNMAPPED; } } } int i810_flush_ioctl(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg) { drm_file_t *priv = filp->private_data; drm_device_t *dev = priv->dev; if (!_DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock)) { DRM_ERROR("i810_flush_ioctl called without lock held\n"); return -EINVAL; } i810_flush_queue(dev); return 0; } int i810_dma_vertex(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg) { drm_file_t *priv = filp->private_data; drm_device_t *dev = priv->dev; drm_device_dma_t *dma = dev->dma; drm_i810_private_t *dev_priv = (drm_i810_private_t *)dev->dev_private; u32 *hw_status = dev_priv->hw_status_page; drm_i810_sarea_t *sarea_priv = (drm_i810_sarea_t *) dev_priv->sarea_priv; drm_i810_vertex_t vertex; if (copy_from_user(&vertex, (drm_i810_vertex_t __user *)arg, sizeof(vertex))) return -EFAULT; if (!_DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock)) { DRM_ERROR("i810_dma_vertex called without lock held\n"); return -EINVAL; } DRM_DEBUG("i810 dma vertex, idx %d used %d discard %d\n", vertex.idx, vertex.used, vertex.discard); if (vertex.idx < 0 || vertex.idx > dma->buf_count) return -EINVAL; i810_dma_dispatch_vertex( dev, dma->buflist[ vertex.idx ], vertex.discard, vertex.used ); atomic_add(vertex.used, &dev->counts[_DRM_STAT_SECONDARY]); atomic_inc(&dev->counts[_DRM_STAT_DMA]); sarea_priv->last_enqueue = dev_priv->counter-1; sarea_priv->last_dispatch = (int) hw_status[5]; return 0; } int i810_clear_bufs(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg) { drm_file_t *priv = filp->private_data; drm_device_t *dev = priv->dev; drm_i810_clear_t clear; if (copy_from_user(&clear, (drm_i810_clear_t __user *)arg, sizeof(clear))) return -EFAULT; if (!_DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock)) { DRM_ERROR("i810_clear_bufs called without lock held\n"); return -EINVAL; } /* GH: Someone's doing nasty things... */ if (!dev->dev_private) { return -EINVAL; } i810_dma_dispatch_clear( dev, clear.flags, clear.clear_color, clear.clear_depth ); return 0; } int i810_swap_bufs(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg) { drm_file_t *priv = filp->private_data; drm_device_t *dev = priv->dev; DRM_DEBUG("i810_swap_bufs\n"); if (!_DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock)) { DRM_ERROR("i810_swap_buf called without lock held\n"); return -EINVAL; } i810_dma_dispatch_swap( dev ); return 0; } int i810_getage(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg) { drm_file_t *priv = filp->private_data; drm_device_t *dev = priv->dev; drm_i810_private_t *dev_priv = (drm_i810_private_t *)dev->dev_private; u32 *hw_status = dev_priv->hw_status_page; drm_i810_sarea_t *sarea_priv = (drm_i810_sarea_t *) dev_priv->sarea_priv; sarea_priv->last_dispatch = (int) hw_status[5]; return 0; } int i810_getbuf(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg) { drm_file_t *priv = filp->private_data; drm_device_t *dev = priv->dev; int retcode = 0; drm_i810_dma_t d; drm_i810_private_t *dev_priv = (drm_i810_private_t *)dev->dev_private; u32 *hw_status = dev_priv->hw_status_page; drm_i810_sarea_t *sarea_priv = (drm_i810_sarea_t *) dev_priv->sarea_priv; if (copy_from_user(&d, (drm_i810_dma_t __user *)arg, sizeof(d))) return -EFAULT; if (!_DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock)) { DRM_ERROR("i810_dma called without lock held\n"); return -EINVAL; } d.granted = 0; retcode = i810_dma_get_buffer(dev, &d, filp); DRM_DEBUG("i810_dma: %d returning %d, granted = %d\n", current->pid, retcode, d.granted); if (copy_to_user((drm_dma_t __user *)arg, &d, sizeof(d))) return -EFAULT; sarea_priv->last_dispatch = (int) hw_status[5]; return retcode; } int i810_copybuf(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg) { /* Never copy - 2.4.x doesn't need it */ return 0; } int i810_docopy(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg) { /* Never copy - 2.4.x doesn't need it */ return 0; } static void i810_dma_dispatch_mc(drm_device_t *dev, drm_buf_t *buf, int used, unsigned int last_render) { drm_i810_private_t *dev_priv = dev->dev_private; drm_i810_buf_priv_t *buf_priv = buf->dev_private; drm_i810_sarea_t *sarea_priv = dev_priv->sarea_priv; unsigned long address = (unsigned long)buf->bus_address; unsigned long start = address - dev->agp->base; int u; RING_LOCALS; i810_kernel_lost_context(dev); u = cmpxchg(buf_priv->in_use, I810_BUF_CLIENT, I810_BUF_HARDWARE); if (u != I810_BUF_CLIENT) { DRM_DEBUG("MC found buffer that isn't mine!\n"); } if (used > 4*1024) used = 0; sarea_priv->dirty = 0x7f; DRM_DEBUG("dispatch mc addr 0x%lx, used 0x%x\n", address, used); dev_priv->counter++; DRM_DEBUG("dispatch counter : %ld\n", dev_priv->counter); DRM_DEBUG("i810_dma_dispatch_mc\n"); DRM_DEBUG("start : %lx\n", start); DRM_DEBUG("used : %d\n", used); DRM_DEBUG("start + used - 4 : %ld\n", start + used - 4); if (buf_priv->currently_mapped == I810_BUF_MAPPED) { if (used & 4) { *(u32 *)((u32)buf_priv->virtual + used) = 0; used += 4; } i810_unmap_buffer(buf); } BEGIN_LP_RING(4); OUT_RING( CMD_OP_BATCH_BUFFER ); OUT_RING( start | BB1_PROTECTED ); OUT_RING( start + used - 4 ); OUT_RING( 0 ); ADVANCE_LP_RING(); BEGIN_LP_RING(8); OUT_RING( CMD_STORE_DWORD_IDX ); OUT_RING( buf_priv->my_use_idx ); OUT_RING( I810_BUF_FREE ); OUT_RING( 0 ); OUT_RING( CMD_STORE_DWORD_IDX ); OUT_RING( 16 ); OUT_RING( last_render ); OUT_RING( 0 ); ADVANCE_LP_RING(); } int i810_dma_mc(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg) { drm_file_t *priv = filp->private_data; drm_device_t *dev = priv->dev; drm_device_dma_t *dma = dev->dma; drm_i810_private_t *dev_priv = (drm_i810_private_t *)dev->dev_private; u32 *hw_status = dev_priv->hw_status_page; drm_i810_sarea_t *sarea_priv = (drm_i810_sarea_t *) dev_priv->sarea_priv; drm_i810_mc_t mc; if (copy_from_user(&mc, (drm_i810_mc_t __user *)arg, sizeof(mc))) return -EFAULT; if (!_DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock)) { DRM_ERROR("i810_dma_mc called without lock held\n"); return -EINVAL; } if (mc.idx >= dma->buf_count || mc.idx < 0) return -EINVAL; i810_dma_dispatch_mc(dev, dma->buflist[mc.idx], mc.used, mc.last_render ); atomic_add(mc.used, &dev->counts[_DRM_STAT_SECONDARY]); atomic_inc(&dev->counts[_DRM_STAT_DMA]); sarea_priv->last_enqueue = dev_priv->counter-1; sarea_priv->last_dispatch = (int) hw_status[5]; return 0; } int i810_rstatus(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg) { drm_file_t *priv = filp->private_data; drm_device_t *dev = priv->dev; drm_i810_private_t *dev_priv = (drm_i810_private_t *)dev->dev_private; return (int)(((u32 *)(dev_priv->hw_status_page))[4]); } int i810_ov0_info(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg) { drm_file_t *priv = filp->private_data; drm_device_t *dev = priv->dev; drm_i810_private_t *dev_priv = (drm_i810_private_t *)dev->dev_private; drm_i810_overlay_t data; data.offset = dev_priv->overlay_offset; data.physical = dev_priv->overlay_physical; if (copy_to_user((drm_i810_overlay_t __user *)arg,&data,sizeof(data))) return -EFAULT; return 0; } int i810_fstatus(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg) { drm_file_t *priv = filp->private_data; drm_device_t *dev = priv->dev; drm_i810_private_t *dev_priv = (drm_i810_private_t *)dev->dev_private; if (!_DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock)) { DRM_ERROR("i810_fstatus called without lock held\n"); return -EINVAL; } return I810_READ(0x30008); } int i810_ov0_flip(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg) { drm_file_t *priv = filp->private_data; drm_device_t *dev = priv->dev; drm_i810_private_t *dev_priv = (drm_i810_private_t *)dev->dev_private; if (!_DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock)) { DRM_ERROR("i810_ov0_flip called without lock held\n"); return -EINVAL; } //Tell the overlay to update I810_WRITE(0x30000,dev_priv->overlay_physical | 0x80000000); return 0; } /* Not sure why this isn't set all the time: */ static void i810_do_init_pageflip( drm_device_t *dev ) { drm_i810_private_t *dev_priv = dev->dev_private; DRM_DEBUG("%s\n", __FUNCTION__); dev_priv->page_flipping = 1; dev_priv->current_page = 0; dev_priv->sarea_priv->pf_current_page = dev_priv->current_page; } int i810_do_cleanup_pageflip( drm_device_t *dev ) { drm_i810_private_t *dev_priv = dev->dev_private; DRM_DEBUG("%s\n", __FUNCTION__); if (dev_priv->current_page != 0) i810_dma_dispatch_flip( dev ); dev_priv->page_flipping = 0; return 0; } int i810_flip_bufs(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg) { drm_file_t *priv = filp->private_data; drm_device_t *dev = priv->dev; drm_i810_private_t *dev_priv = dev->dev_private; DRM_DEBUG("%s\n", __FUNCTION__); if (!_DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock)) { DRM_ERROR("i810_flip_buf called without lock held\n"); return -EINVAL; } if (!dev_priv->page_flipping) i810_do_init_pageflip( dev ); i810_dma_dispatch_flip( dev ); return 0; } static void i810_driver_pretakedown(drm_device_t *dev) { i810_dma_cleanup( dev ); } static void i810_driver_release(drm_device_t *dev, struct file *filp) { i810_reclaim_buffers(filp); } static int i810_driver_dma_quiescent(drm_device_t *dev) { i810_dma_quiescent( dev ); return 0; } void i810_driver_register_fns(drm_device_t *dev) { dev->driver_features = DRIVER_USE_AGP | DRIVER_REQUIRE_AGP | DRIVER_USE_MTRR | DRIVER_HAVE_DMA | DRIVER_DMA_QUEUE; dev->dev_priv_size = sizeof(drm_i810_buf_priv_t); dev->fn_tbl.pretakedown = i810_driver_pretakedown; dev->fn_tbl.release = i810_driver_release; dev->fn_tbl.dma_quiescent = i810_driver_dma_quiescent; dev->fn_tbl.reclaim_buffers = i810_reclaim_buffers; } 37' href='#n1037'>1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 
/**
 * \file drm_ioc32.c
 *
 * 32-bit ioctl compatibility routines for the DRM.
 *
 * \author Paul Mackerras <paulus@samba.org>
 *
 * Copyright (C) Paul Mackerras 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 <linux/ioctl32.h>

#include "drmP.h"
#include "drm_core.h"

#define DRM_IOCTL_VERSION32		DRM_IOWR(0x00, drm_version32_t)
#define DRM_IOCTL_GET_UNIQUE32		DRM_IOWR(0x01, drm_unique32_t)
#define DRM_IOCTL_GET_MAP32		DRM_IOWR(0x04, drm_map32_t)
#define DRM_IOCTL_GET_CLIENT32		DRM_IOWR(0x05, drm_client32_t)
#define DRM_IOCTL_GET_STATS32		DRM_IOR( 0x06, drm_stats32_t)

#define DRM_IOCTL_SET_UNIQUE32		DRM_IOW( 0x10, drm_unique32_t)
#define DRM_IOCTL_ADD_MAP32		DRM_IOWR(0x15, drm_map32_t)
#define DRM_IOCTL_ADD_BUFS32		DRM_IOWR(0x16, drm_buf_desc32_t)
#define DRM_IOCTL_MARK_BUFS32		DRM_IOW( 0x17, drm_buf_desc32_t)
#define DRM_IOCTL_INFO_BUFS32		DRM_IOWR(0x18, drm_buf_info32_t)
#define DRM_IOCTL_MAP_BUFS32		DRM_IOWR(0x19, drm_buf_map32_t)
#define DRM_IOCTL_FREE_BUFS32		DRM_IOW( 0x1a, drm_buf_free32_t)

#define DRM_IOCTL_RM_MAP32		DRM_IOW( 0x1b, drm_map32_t)

#define DRM_IOCTL_SET_SAREA_CTX32	DRM_IOW( 0x1c, drm_ctx_priv_map32_t)
#define DRM_IOCTL_GET_SAREA_CTX32	DRM_IOWR(0x1d, drm_ctx_priv_map32_t)

#define DRM_IOCTL_RES_CTX32		DRM_IOWR(0x26, drm_ctx_res32_t)
#define DRM_IOCTL_DMA32			DRM_IOWR(0x29, drm_dma32_t)

#define DRM_IOCTL_AGP_ENABLE32		DRM_IOW( 0x32, drm_agp_mode32_t)
#define DRM_IOCTL_AGP_INFO32		DRM_IOR( 0x33, drm_agp_info32_t)
#define DRM_IOCTL_AGP_ALLOC32		DRM_IOWR(0x34, drm_agp_buffer32_t)
#define DRM_IOCTL_AGP_FREE32		DRM_IOW( 0x35, drm_agp_buffer32_t)
#define DRM_IOCTL_AGP_BIND32		DRM_IOW( 0x36, drm_agp_binding32_t)
#define DRM_IOCTL_AGP_UNBIND32		DRM_IOW( 0x37, drm_agp_binding32_t)

#define DRM_IOCTL_SG_ALLOC32		DRM_IOW( 0x38, drm_scatter_gather32_t)
#define DRM_IOCTL_SG_FREE32		DRM_IOW( 0x39, drm_scatter_gather32_t)

#define DRM_IOCTL_WAIT_VBLANK32		DRM_IOWR(0x3a, drm_wait_vblank32_t)

typedef struct drm_version_32 {
	int version_major;	  /**< Major version */
	int version_minor;	  /**< Minor version */
	int version_patchlevel;	  /**< Patch level */
	u32 name_len;		  /**< Length of name buffer */
	u32 name;		  /**< Name of driver */
	u32 date_len;		  /**< Length of date buffer */
	u32 date;		  /**< User-space buffer to hold date */
	u32 desc_len;		  /**< Length of desc buffer */
	u32 desc;		  /**< User-space buffer to hold desc */
} drm_version32_t;

static int compat_drm_version(struct file *file, unsigned int cmd,
			      unsigned long arg)
{
	drm_version32_t v32;
	drm_version_t __user *version;
	int err;

	if (copy_from_user(&v32, (void __user *)arg, sizeof(v32)))
		return -EFAULT;

	version = compat_alloc_user_space(sizeof(*version));
	if (!access_ok(VERIFY_WRITE, version, sizeof(*version)))
		return -EFAULT;
	if (__put_user(v32.name_len, &version->name_len)
	    || __put_user((void __user *)(unsigned long)v32.name,
			  &version->name)
	    || __put_user(v32.date_len, &version->date_len)
	    || __put_user((void __user *)(unsigned long)v32.date,
			  &version->date)
	    || __put_user(v32.desc_len, &version->desc_len)
	    || __put_user((void __user *)(unsigned long)v32.desc,
			  &version->desc))
		return -EFAULT;

	err = drm_ioctl(file->f_dentry->d_inode, file,
			DRM_IOCTL_VERSION, (unsigned long)version);
	if (err)
		return err;

	if (__get_user(v32.version_major, &version->version_major)
	    || __get_user(v32.version_minor, &version->version_minor)
	    || __get_user(v32.version_patchlevel, &version->version_patchlevel)
	    || __get_user(v32.name_len, &version->name_len)
	    || __get_user(v32.date_len, &version->date_len)
	    || __get_user(v32.desc_len, &version->desc_len))
		return -EFAULT;

	if (copy_to_user((void __user *)arg, &v32, sizeof(v32)))
		return -EFAULT;
	return 0;
}

typedef struct drm_unique32 {
	u32 unique_len;	/**< Length of unique */
	u32 unique;	/**< Unique name for driver instantiation */
} drm_unique32_t;

static int compat_drm_getunique(struct file *file, unsigned int cmd,
				unsigned long arg)
{
	drm_unique32_t uq32;
	drm_unique_t __user *u;
	int err;

	if (copy_from_user(&uq32, (void __user *)arg, sizeof(uq32)))
		return -EFAULT;

	u = compat_alloc_user_space(sizeof(*u));
	if (!access_ok(VERIFY_WRITE, u, sizeof(*u)))
		return -EFAULT;
	if (__put_user(uq32.unique_len, &u->unique_len)
	    || __put_user((void __user *)(unsigned long)uq32.unique,
			  &u->unique))
		return -EFAULT;

	err = drm_ioctl(file->f_dentry->d_inode, file,
			DRM_IOCTL_GET_UNIQUE, (unsigned long)u);
	if (err)
		return err;

	if (__get_user(uq32.unique_len, &u->unique_len))
		return -EFAULT;
	if (copy_to_user((void __user *)arg, &uq32, sizeof(uq32)))
		return -EFAULT;
	return 0;
}

static int compat_drm_setunique(struct file *file, unsigned int cmd,
				unsigned long arg)
{
	drm_unique32_t uq32;
	drm_unique_t __user *u;

	if (copy_from_user(&uq32, (void __user *)arg, sizeof(uq32)))
		return -EFAULT;

	u = compat_alloc_user_space(sizeof(*u));
	if (!access_ok(VERIFY_WRITE, u, sizeof(*u)))
		return -EFAULT;
	if (__put_user(uq32.unique_len, &u->unique_len)
	    || __put_user((void __user *)(unsigned long)uq32.unique,
			  &u->unique))
		return -EFAULT;

	return drm_ioctl(file->f_dentry->d_inode, file,
			 DRM_IOCTL_SET_UNIQUE, (unsigned long)u);
}

typedef struct drm_map32 {
	u32 offset;		/**< Requested physical address (0 for SAREA)*/
	u32 size;		/**< Requested physical size (bytes) */
	drm_map_type_t type;	/**< Type of memory to map */
	drm_map_flags_t flags;	/**< Flags */
	u32 handle;		/**< User-space: "Handle" to pass to mmap() */
	int mtrr;		/**< MTRR slot used */
} drm_map32_t;

static int compat_drm_getmap(struct file *file, unsigned int cmd,
			     unsigned long arg)
{
	drm_map32_t __user *argp = (void __user *)arg;
	drm_map32_t m32;
	drm_map_t __user *map;
	int idx, err;
	void *handle;

	if (get_user(idx, &argp->offset))
		return -EFAULT;

	map = compat_alloc_user_space(sizeof(*map));
	if (!access_ok(VERIFY_WRITE, map, sizeof(*map)))
		return -EFAULT;
	if (__put_user(idx, &map->offset))
		return -EFAULT;

	err = drm_ioctl(file->f_dentry->d_inode, file,
			DRM_IOCTL_GET_MAP, (unsigned long)map);
	if (err)
		return err;

	if (__get_user(m32.offset, &map->offset)
	    || __get_user(m32.size, &map->size)
	    || __get_user(m32.type, &map->type)
	    || __get_user(m32.flags, &map->flags)
	    || __get_user(handle, &map->handle)
	    || __get_user(m32.mtrr, &map->mtrr))
		return -EFAULT;

	m32.handle = (unsigned long)handle;
	if (copy_to_user(argp, &m32, sizeof(m32)))
		return -EFAULT;
	return 0;

}

static int compat_drm_addmap(struct file *file, unsigned int cmd,
			     unsigned long arg)
{
	drm_map32_t __user *argp = (void __user *)arg;
	drm_map32_t m32;
	drm_map_t __user *map;
	int err;
	void *handle;

	if (copy_from_user(&m32, argp, sizeof(m32)))
		return -EFAULT;

	map = compat_alloc_user_space(sizeof(*map));
	if (!access_ok(VERIFY_WRITE, map, sizeof(*map)))
		return -EFAULT;
	if (__put_user(m32.offset, &map->offset)
	    || __put_user(m32.size, &map->size)
	    || __put_user(m32.type, &map->type)
	    || __put_user(m32.flags, &map->flags))
		return -EFAULT;

	err = drm_ioctl(file->f_dentry->d_inode, file,
			DRM_IOCTL_ADD_MAP, (unsigned long)map);
	if (err)
		return err;

	if (__get_user(m32.offset, &map->offset)
	    || __get_user(m32.mtrr, &map->mtrr)
	    || __get_user(handle, &map->handle))
		return -EFAULT;

	m32.handle = (unsigned long)handle;
	if (m32.handle != (unsigned long)handle && printk_ratelimit())
		printk(KERN_ERR "compat_drm_addmap truncated handle"
		       " %p for type %d offset %x\n",
		       handle, m32.type, m32.offset);

	if (copy_to_user(argp, &m32, sizeof(m32)))
		return -EFAULT;

	return 0;
}

static int compat_drm_rmmap(struct file *file, unsigned int cmd,
			    unsigned long arg)
{
	drm_map32_t __user *argp = (void __user *)arg;
	drm_map_t __user *map;
	u32 handle;

	if (get_user(handle, &argp->handle))
		return -EFAULT;

	map = compat_alloc_user_space(sizeof(*map));
	if (!access_ok(VERIFY_WRITE, map, sizeof(*map)))
		return -EFAULT;
	if (__put_user((void *)(unsigned long)handle, &map->handle))
		return -EFAULT;

	return drm_ioctl(file->f_dentry->d_inode, file,
			 DRM_IOCTL_RM_MAP, (unsigned long)map);
}

typedef struct drm_client32 {
	int idx;	/**< Which client desired? */
	int auth;	/**< Is client authenticated? */
	u32 pid;	/**< Process ID */
	u32 uid;	/**< User ID */
	u32 magic;	/**< Magic */
	u32 iocs;	/**< Ioctl count */
} drm_client32_t;

static int compat_drm_getclient(struct file *file, unsigned int cmd,
				unsigned long arg)
{
	drm_client32_t c32;
	drm_client32_t __user *argp = (void __user *)arg;
	drm_client_t __user *client;
	int idx, err;

	if (get_user(idx, &argp->idx))
		return -EFAULT;

	client = compat_alloc_user_space(sizeof(*client));
	if (!access_ok(VERIFY_WRITE, client, sizeof(*client)))
		return -EFAULT;
	if (__put_user(idx, &client->idx))
		return -EFAULT;

	err = drm_ioctl(file->f_dentry->d_inode, file,
			DRM_IOCTL_GET_CLIENT, (unsigned long)client);
	if (err)
		return err;

	if (__get_user(c32.auth, &client->auth)
	    || __get_user(c32.pid, &client->pid)
	    || __get_user(c32.uid, &client->uid)
	    || __get_user(c32.magic, &client->magic)
	    || __get_user(c32.iocs, &client->iocs))
		return -EFAULT;

	if (copy_to_user(argp, &c32, sizeof(c32)))
		return -EFAULT;
	return 0;
}

typedef struct drm_stats32 {
	u32 count;
	struct {
		u32 value;
		drm_stat_type_t type;
	} data[15];
} drm_stats32_t;

static int compat_drm_getstats(struct file *file, unsigned int cmd,
			       unsigned long arg)
{
	drm_stats32_t s32;
	drm_stats32_t __user *argp = (void __user *)arg;
	drm_stats_t __user *stats;
	int i, err;

	stats = compat_alloc_user_space(sizeof(*stats));
	if (!access_ok(VERIFY_WRITE, stats, sizeof(*stats)))
		return -EFAULT;

	err = drm_ioctl(file->f_dentry->d_inode, file,
			DRM_IOCTL_GET_STATS, (unsigned long)stats);
	if (err)
		return err;

	if (__get_user(s32.count, &stats->count))
		return -EFAULT;
	for (i = 0; i < 15; ++i)
		if (__get_user(s32.data[i].value, &stats->data[i].value)
		    || __get_user(s32.data[i].type, &stats->data[i].type))
			return -EFAULT;

	if (copy_to_user(argp, &s32, sizeof(s32)))
		return -EFAULT;
	return 0;
}

typedef struct drm_buf_desc32 {
	int count;		 /**< Number of buffers of this size */
	int size;		 /**< Size in bytes */
	int low_mark;		 /**< Low water mark */
	int high_mark;		 /**< High water mark */
	int flags;
	u32 agp_start;		 /**< Start address in the AGP aperture */
} drm_buf_desc32_t;

static int compat_drm_addbufs(struct file *file, unsigned int cmd,
			      unsigned long arg)
{
	drm_buf_desc32_t __user *argp = (void __user *)arg;
	drm_buf_desc_t __user *buf;
	int err;
	unsigned long agp_start;

	buf = compat_alloc_user_space(sizeof(*buf));
	if (!access_ok(VERIFY_WRITE, buf, sizeof(*buf))
	    || !access_ok(VERIFY_WRITE, argp, sizeof(*argp)))
		return -EFAULT;

	if (__copy_in_user(buf, argp, offsetof(drm_buf_desc32_t, agp_start))
	    || __get_user(agp_start, &argp->agp_start)
	    || __put_user(agp_start, &buf->agp_start))
		return -EFAULT;

	err = drm_ioctl(file->f_dentry->d_inode, file,
			DRM_IOCTL_ADD_BUFS, (unsigned long)buf);
	if (err)
		return err;

	if (__copy_in_user(argp, buf, offsetof(drm_buf_desc32_t, agp_start))
	    || __get_user(agp_start, &buf->agp_start)
	    || __put_user(agp_start, &argp->agp_start))
		return -EFAULT;

	return 0;
}

static int compat_drm_markbufs(struct file *file, unsigned int cmd,
			       unsigned long arg)
{
	drm_buf_desc32_t b32;
	drm_buf_desc32_t __user *argp = (void __user *)arg;
	drm_buf_desc_t __user *buf;

	if (copy_from_user(&b32, argp, sizeof(b32)))
		return -EFAULT;

	buf = compat_alloc_user_space(sizeof(*buf));
	if (!access_ok(VERIFY_WRITE, buf, sizeof(*buf)))
		return -EFAULT;

	if (__put_user(b32.size, &buf->size)
	    || __put_user(b32.low_mark, &buf->low_mark)
	    || __put_user(b32.high_mark, &buf->high_mark))
		return -EFAULT;

	return drm_ioctl(file->f_dentry->d_inode, file,
			 DRM_IOCTL_MARK_BUFS, (unsigned long)buf);
}

typedef struct drm_buf_info32 {
	int count;		/**< Entries in list */
	u32 list;
} drm_buf_info32_t;

static int compat_drm_infobufs(struct file *file, unsigned int cmd,
			       unsigned long arg)
{
	drm_buf_info32_t req32;
	drm_buf_info32_t __user *argp = (void __user *)arg;
	drm_buf_desc32_t __user *to;
	drm_buf_info_t __user *request;
	drm_buf_desc_t __user *list;
	size_t nbytes;
	int i, err;
	int count, actual;

	if (copy_from_user(&req32, argp, sizeof(req32)))
		return -EFAULT;

	count = req32.count;
	to = (drm_buf_desc32_t __user *)(unsigned long)req32.list;
	if (count < 0)
		count = 0;
	if (count > 0
	    && !access_ok(VERIFY_WRITE, to, count * sizeof(drm_buf_desc32_t)))
		return -EFAULT;

	nbytes = sizeof(*request) + count * sizeof(drm_buf_desc_t);
	request = compat_alloc_user_space(nbytes);
	if (!access_ok(VERIFY_WRITE, request, nbytes))
		return -EFAULT;
	list = (drm_buf_desc_t *) (request + 1);

	if (__put_user(count, &request->count)
	    || __put_user(list, &request->list))
		return -EFAULT;

	err = drm_ioctl(file->f_dentry->d_inode, file,
			DRM_IOCTL_INFO_BUFS, (unsigned long)request);
	if (err)
		return err;

	if (__get_user(actual, &request->count))
		return -EFAULT;
	if (count >= actual)
		for (i = 0; i < actual; ++i)
			if (__copy_in_user(&to[i], &list[i],
					   offsetof(drm_buf_desc_t, flags)))
				return -EFAULT;

	if (__put_user(actual, &argp->count))
		return -EFAULT;

	return 0;
}

typedef struct drm_buf_pub32 {
	int idx;		/**< Index into the master buffer list */
	int total;		/**< Buffer size */
	int used;		/**< Amount of buffer in use (for DMA) */
	u32 address;		/**< Address of buffer */
} drm_buf_pub32_t;

typedef struct drm_buf_map32 {
	int count;		/**< Length of the buffer list */
	u32 virtual;		/**< Mmap'd area in user-virtual */
	u32 list;		/**< Buffer information */
} drm_buf_map32_t;

static int compat_drm_mapbufs(struct file *file, unsigned int cmd,
			      unsigned long arg)
{
	drm_buf_map32_t __user *argp = (void __user *)arg;
	drm_buf_map32_t req32;
	drm_buf_pub32_t __user *list32;
	drm_buf_map_t __user *request;
	drm_buf_pub_t __user *list;
	int i, err;
	int count, actual;
	size_t nbytes;
	void __user *addr;

	if (copy_from_user(&req32, argp, sizeof(req32)))
		return -EFAULT;
	count = req32.count;
	list32 = (void __user *)(unsigned long)req32.list;

	if (count < 0)
		return -EINVAL;
	nbytes = sizeof(*request) + count * sizeof(drm_buf_pub_t);
	request = compat_alloc_user_space(nbytes);
	if (!access_ok(VERIFY_WRITE, request, nbytes))
		return -EFAULT;
	list = (drm_buf_pub_t *) (request + 1);

	if (__put_user(count, &request->count)
	    || __put_user(list, &request->list))
		return -EFAULT;

	err = drm_ioctl(file->f_dentry->d_inode, file,
			DRM_IOCTL_MAP_BUFS, (unsigned long)request);
	if (err)
		return err;

	if (__get_user(actual, &request->count))
		return -EFAULT;
	if (count >= actual)
		for (i = 0; i < actual; ++i)
			if (__copy_in_user(&list32[i], &list[i],
					   offsetof(drm_buf_pub_t, address))
			    || __get_user(addr, &list[i].address)
			    || __put_user((unsigned long)addr,
					  &list32[i].address))
				return -EFAULT;

	if (__put_user(actual, &argp->count)
	    || __get_user(addr, &request->virtual)
	    || __put_user((unsigned long)addr, &argp->virtual))
		return -EFAULT;

	return 0;
}

typedef struct drm_buf_free32 {
	int count;
	u32 list;
} drm_buf_free32_t;

static int compat_drm_freebufs(struct file *file, unsigned int cmd,
			       unsigned long arg)
{
	drm_buf_free32_t req32;
	drm_buf_free_t __user *request;
	drm_buf_free32_t __user *argp = (void __user *)arg;

	if (copy_from_user(&req32, argp, sizeof(req32)))
		return -EFAULT;

	request = compat_alloc_user_space(sizeof(*request));
	if (!access_ok(VERIFY_WRITE, request, sizeof(*request)))
		return -EFAULT;
	if (__put_user(req32.count, &request->count)
	    || __put_user((int __user *)(unsigned long)req32.list,
			  &request->list))
		return -EFAULT;

	return drm_ioctl(file->f_dentry->d_inode, file,
			 DRM_IOCTL_FREE_BUFS, (unsigned long)request);
}

typedef struct drm_ctx_priv_map32 {
	unsigned int ctx_id;	 /**< Context requesting private mapping */
	u32 handle;		/**< Handle of map */
} drm_ctx_priv_map32_t;

static int compat_drm_setsareactx(struct file *file, unsigned int cmd,
				  unsigned long arg)
{
	drm_ctx_priv_map32_t req32;
	drm_ctx_priv_map_t __user *request;
	drm_ctx_priv_map32_t __user *argp = (void __user *)arg;

	if (copy_from_user(&req32, argp, sizeof(req32)))
		return -EFAULT;

	request = compat_alloc_user_space(sizeof(*request));
	if (!access_ok(VERIFY_WRITE, request, sizeof(*request)))
		return -EFAULT;
	if (__put_user(req32.ctx_id, &request->ctx_id)
	    || __put_user((void *)(unsigned long)req32.handle,
			  &request->handle))
		return -EFAULT;

	return drm_ioctl(file->f_dentry->d_inode, file,
			 DRM_IOCTL_SET_SAREA_CTX, (unsigned long)request);
}

static int compat_drm_getsareactx(struct file *file, unsigned int cmd,
				  unsigned long arg)
{
	drm_ctx_priv_map_t __user *request;
	drm_ctx_priv_map32_t __user *argp = (void __user *)arg;
	int err;
	unsigned int ctx_id;
	void *handle;

	if (!access_ok(VERIFY_WRITE, argp, sizeof(*argp))
	    || __get_user(ctx_id, &argp->ctx_id))
		return -EFAULT;

	request = compat_alloc_user_space(sizeof(*request));
	if (!access_ok(VERIFY_WRITE, request, sizeof(*request)))
		return -EFAULT;
	if (__put_user(ctx_id, &request->ctx_id))
		return -EFAULT;

	err = drm_ioctl(file->f_dentry->d_inode, file,
			DRM_IOCTL_GET_SAREA_CTX, (unsigned long)request);
	if (err)
		return err;

	if (__get_user(handle, &request->handle)
	    || __put_user((unsigned long)handle, &argp->handle))
		return -EFAULT;

	return 0;
}

typedef struct drm_ctx_res32 {
	int count;
	u32 contexts;
} drm_ctx_res32_t;

static int compat_drm_resctx(struct file *file, unsigned int cmd,
			     unsigned long arg)
{
	drm_ctx_res32_t __user *argp = (void __user *)arg;
	drm_ctx_res32_t res32;
	drm_ctx_res_t __user *res;
	int err;

	if (copy_from_user(&res32, argp, sizeof(res32)))
		return -EFAULT;

	res = compat_alloc_user_space(sizeof(*res));
	if (!access_ok(VERIFY_WRITE, res, sizeof(*res)))
		return -EFAULT;
	if (__put_user(res32.count, &res->count)
	    || __put_user((drm_ctx_t __user *)(unsigned long)res32.contexts,
			  &res->contexts))
		return -EFAULT;

	err = drm_ioctl(file->f_dentry->d_inode, file,
			DRM_IOCTL_RES_CTX, (unsigned long)res);
	if (err)
		return err;

	if (__get_user(res32.count, &res->count)
	    || __put_user(res32.count, &argp->count))
		return -EFAULT;

	return 0;
}

typedef struct drm_dma32 {
	int context;		  /**< Context handle */
	int send_count;		  /**< Number of buffers to send */
	u32 send_indices;	  /**< List of handles to buffers */
	u32 send_sizes;		  /**< Lengths of data to send */
	drm_dma_flags_t flags;	  /**< Flags */
	int request_count;	  /**< Number of buffers requested */
	int request_size;	  /**< Desired size for buffers */
	u32 request_indices;	  /**< Buffer information */
	u32 request_sizes;
	int granted_count;	  /**< Number of buffers granted */
} drm_dma32_t;

static int compat_drm_dma(struct file *file, unsigned int cmd,
			  unsigned long arg)
{
	drm_dma32_t d32;
	drm_dma32_t __user *argp = (void __user *)arg;
	drm_dma_t __user *d;
	int err;

	if (copy_from_user(&d32, argp, sizeof(d32)))
		return -EFAULT;

	d = compat_alloc_user_space(sizeof(*d));
	if (!access_ok(VERIFY_WRITE, d, sizeof(*d)))
		return -EFAULT;

	if (__put_user(d32.context, &d->context)
	    || __put_user(d32.send_count, &d->send_count)
	    || __put_user((int __user *)(unsigned long)d32.send_indices,
			  &d->send_indices)
	    || __put_user((int __user *)(unsigned long)d32.send_sizes,
			  &d->send_sizes)
	    || __put_user(d32.flags, &d->flags)
	    || __put_user(d32.request_count, &d->request_count)
	    || __put_user((int __user *)(unsigned long)d32.request_indices,
			  &d->request_indices)
	    || __put_user((int __user *)(unsigned long)d32.request_sizes,
			  &d->request_sizes))
		return -EFAULT;

	err = drm_ioctl(file->f_dentry->d_inode, file,
			DRM_IOCTL_DMA, (unsigned long)d);
	if (err)
		return err;

	if (__get_user(d32.request_size, &d->request_size)
	    || __get_user(d32.granted_count, &d->granted_count)
	    || __put_user(d32.request_size, &argp->request_size)
	    || __put_user(d32.granted_count, &argp->granted_count))
		return -EFAULT;

	return 0;
}

#if __OS_HAS_AGP
typedef struct drm_agp_mode32 {
	u32 mode;	/**< AGP mode */
} drm_agp_mode32_t;

static int compat_drm_agp_enable(struct file *file, unsigned int cmd,
				 unsigned long arg)
{
	drm_agp_mode32_t __user *argp = (void __user *)arg;
	drm_agp_mode32_t m32;
	drm_agp_mode_t __user *mode;

	if (get_user(m32.mode, &argp->mode))
		return -EFAULT;

	mode = compat_alloc_user_space(sizeof(*mode));
	if (put_user(m32.mode, &mode->mode))
		return -EFAULT;

	return drm_ioctl(file->f_dentry->d_inode, file,
			 DRM_IOCTL_AGP_ENABLE, (unsigned long)mode);
}

typedef struct drm_agp_info32 {
	int agp_version_major;
	int agp_version_minor;
	u32 mode;
	u32 aperture_base;	/* physical address */
	u32 aperture_size;	/* bytes */
	u32 memory_allowed;	/* bytes */
	u32 memory_used;

	/* PCI information */
	unsigned short id_vendor;
	unsigned short id_device;
} drm_agp_info32_t;

static int compat_drm_agp_info(struct file *file, unsigned int cmd,
			       unsigned long arg)
{
	drm_agp_info32_t __user *argp = (void __user *)arg;
	drm_agp_info32_t i32;
	drm_agp_info_t __user *info;
	int err;

	info = compat_alloc_user_space(sizeof(*info));
	if (!access_ok(VERIFY_WRITE, info, sizeof(*info)))
		return -EFAULT;

	err = drm_ioctl(file->f_dentry->d_inode, file,
			DRM_IOCTL_AGP_INFO, (unsigned long)info);
	if (err)
		return err;

	if (__get_user(i32.agp_version_major, &info->agp_version_major)
	    || __get_user(i32.agp_version_minor, &info->agp_version_minor)
	    || __get_user(i32.mode, &info->mode)
	    || __get_user(i32.aperture_base, &info->aperture_base)
	    || __get_user(i32.aperture_size, &info->aperture_size)
	    || __get_user(i32.memory_allowed, &info->memory_allowed)
	    || __get_user(i32.memory_used, &info->memory_used)
	    || __get_user(i32.id_vendor, &info->id_vendor)
	    || __get_user(i32.id_device, &info->id_device))
		return -EFAULT;

	if (copy_to_user(argp, &i32, sizeof(i32)))
		return -EFAULT;

	return 0;
}

typedef struct drm_agp_buffer32 {
	u32 size;	/**< In bytes -- will round to page boundary */
	u32 handle;	/**< Used for binding / unbinding */
	u32 type;	/**< Type of memory to allocate */
	u32 physical;	/**< Physical used by i810 */
} drm_agp_buffer32_t;

static int compat_drm_agp_alloc(struct file *file, unsigned int cmd,
				unsigned long arg)
{
	drm_agp_buffer32_t __user *argp = (void __user *)arg;
	drm_agp_buffer32_t req32;
	drm_agp_buffer_t __user *request;
	int err;

	if (copy_from_user(&req32, argp, sizeof(req32)))
		return -EFAULT;

	request = compat_alloc_user_space(sizeof(*request));
	if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
	    || __put_user(req32.size, &request->size)
	    || __put_user(req32.type, &request->type))
		return -EFAULT;

	err = drm_ioctl(file->f_dentry->d_inode, file,
			DRM_IOCTL_AGP_ALLOC, (unsigned long)request);
	if (err)
		return err;

	if (__get_user(req32.handle, &request->handle)
	    || __get_user(req32.physical, &request->physical)
	    || copy_to_user(argp, &req32, sizeof(req32))) {
		drm_ioctl(file->f_dentry->d_inode, file,
			  DRM_IOCTL_AGP_FREE, (unsigned long)request);
		return -EFAULT;
	}

	return 0;
}

static int compat_drm_agp_free(struct file *file, unsigned int cmd,
			       unsigned long arg)
{
	drm_agp_buffer32_t __user *argp = (void __user *)arg;
	drm_agp_buffer_t __user *request;
	u32 handle;

	request = compat_alloc_user_space(sizeof(*request));
	if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
	    || get_user(handle, &argp->handle)
	    || __put_user(handle, &request->handle))
		return -EFAULT;

	return drm_ioctl(file->f_dentry->d_inode, file,
			 DRM_IOCTL_AGP_FREE, (unsigned long)request);
}

typedef struct drm_agp_binding32 {
	u32 handle;	/**< From drm_agp_buffer */
	u32 offset;	/**< In bytes -- will round to page boundary */
} drm_agp_binding32_t;

static int compat_drm_agp_bind(struct file *file, unsigned int cmd,
			       unsigned long arg)
{
	drm_agp_binding32_t __user *argp = (void __user *)arg;
	drm_agp_binding32_t req32;
	drm_agp_binding_t __user *request;

	if (copy_from_user(&req32, argp, sizeof(req32)))
		return -EFAULT;

	request = compat_alloc_user_space(sizeof(*request));
	if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
	    || __put_user(req32.handle, &request->handle)
	    || __put_user(req32.offset, &request->offset))
		return -EFAULT;

	return drm_ioctl(file->f_dentry->d_inode, file,
			 DRM_IOCTL_AGP_BIND, (unsigned long)request);
}

static int compat_drm_agp_unbind(struct file *file, unsigned int cmd,
				 unsigned long arg)
{
	drm_agp_binding32_t __user *argp = (void __user *)arg;
	drm_agp_binding_t __user *request;
	u32 handle;

	request = compat_alloc_user_space(sizeof(*request));
	if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
	    || get_user(handle, &argp->handle)
	    || __put_user(handle, &request->handle))
		return -EFAULT;

	return drm_ioctl(file->f_dentry->d_inode, file,
			 DRM_IOCTL_AGP_UNBIND, (unsigned long)request);
}
#endif				/* __OS_HAS_AGP */

typedef struct drm_scatter_gather32 {
	u32 size;	/**< In bytes -- will round to page boundary */
	u32 handle;	/**< Used for mapping / unmapping */
} drm_scatter_gather32_t;

static int compat_drm_sg_alloc(struct file *file, unsigned int cmd,
			       unsigned long arg)
{
	drm_scatter_gather32_t __user *argp = (void __user *)arg;
	drm_scatter_gather_t __user *request;
	int err;
	unsigned long x;

	request = compat_alloc_user_space(sizeof(*request));
	if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
	    || !access_ok(VERIFY_WRITE, argp, sizeof(*argp))
	    || __get_user(x, &argp->size)
	    || __put_user(x, &request->size))
		return -EFAULT;

	err = drm_ioctl(file->f_dentry->d_inode, file,
			DRM_IOCTL_SG_ALLOC, (unsigned long)request);
	if (err)
		return err;

	/* XXX not sure about the handle conversion here... */
	if (__get_user(x, &request->handle)
	    || __put_user(x >> PAGE_SHIFT, &argp->handle))
		return -EFAULT;

	return 0;
}

static int compat_drm_sg_free(struct file *file, unsigned int cmd,
			      unsigned long arg)
{
	drm_scatter_gather32_t __user *argp = (void __user *)arg;
	drm_scatter_gather_t __user *request;
	unsigned long x;

	request = compat_alloc_user_space(sizeof(*request));
	if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
	    || !access_ok(VERIFY_WRITE, argp, sizeof(*argp))
	    || __get_user(x, &argp->handle)
	    || __put_user(x << PAGE_SHIFT, &request->handle))
		return -EFAULT;

	return drm_ioctl(file->f_dentry->d_inode, file,
			 DRM_IOCTL_SG_FREE, (unsigned long)request);
}

struct drm_wait_vblank_request32 {
	drm_vblank_seq_type_t type;
	unsigned int sequence;
	u32 signal;
};

struct drm_wait_vblank_reply32 {
	drm_vblank_seq_type_t type;
	unsigned int sequence;
	s32 tval_sec;
	s32 tval_usec;
};

typedef union drm_wait_vblank32 {
	struct drm_wait_vblank_request32 request;
	struct drm_wait_vblank_reply32 reply;
} drm_wait_vblank32_t;

static int compat_drm_wait_vblank(struct file *file, unsigned int cmd,
				  unsigned long arg)
{
	drm_wait_vblank32_t __user *argp = (void __user *)arg;
	drm_wait_vblank32_t req32;
	drm_wait_vblank_t __user *request;
	int err;

	if (copy_from_user(&req32, argp, sizeof(req32)))
		return -EFAULT;

	request = compat_alloc_user_space(sizeof(*request));
	if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
	    || __put_user(req32.request.type, &request->request.type)
	    || __put_user(req32.request.sequence, &request->request.sequence)
	    || __put_user(req32.request.signal, &request->request.signal))
		return -EFAULT;

	err = drm_ioctl(file->f_dentry->d_inode, file,
			DRM_IOCTL_WAIT_VBLANK, (unsigned long)request);
	if (err)
		return err;

	if (__get_user(req32.reply.type, &request->reply.type)
	    || __get_user(req32.reply.sequence, &request->reply.sequence)
	    || __get_user(req32.reply.tval_sec, &request->reply.tval_sec)
	    || __get_user(req32.reply.tval_usec, &request->reply.tval_usec))
		return -EFAULT;

	if (copy_to_user(argp, &req32, sizeof(req32)))
		return -EFAULT;

	return 0;
}

drm_ioctl_compat_t *drm_compat_ioctls[] = {
	[DRM_IOCTL_NR(DRM_IOCTL_VERSION32)] = compat_drm_version,
	[DRM_IOCTL_NR(DRM_IOCTL_GET_UNIQUE32)] = compat_drm_getunique,
	[DRM_IOCTL_NR(DRM_IOCTL_GET_MAP32)] = compat_drm_getmap,
	[DRM_IOCTL_NR(DRM_IOCTL_GET_CLIENT32)] = compat_drm_getclient,
	[DRM_IOCTL_NR(DRM_IOCTL_GET_STATS32)] = compat_drm_getstats,
	[DRM_IOCTL_NR(DRM_IOCTL_SET_UNIQUE32)] = compat_drm_setunique,
	[DRM_IOCTL_NR(DRM_IOCTL_ADD_MAP32)] = compat_drm_addmap,
	[DRM_IOCTL_NR(DRM_IOCTL_ADD_BUFS32)] = compat_drm_addbufs,
	[DRM_IOCTL_NR(DRM_IOCTL_MARK_BUFS32)] = compat_drm_markbufs,
	[DRM_IOCTL_NR(DRM_IOCTL_INFO_BUFS32)] = compat_drm_infobufs,
	[DRM_IOCTL_NR(DRM_IOCTL_MAP_BUFS32)] = compat_drm_mapbufs,
	[DRM_IOCTL_NR(DRM_IOCTL_FREE_BUFS32)] = compat_drm_freebufs,
	[DRM_IOCTL_NR(DRM_IOCTL_RM_MAP32)] = compat_drm_rmmap,
	[DRM_IOCTL_NR(DRM_IOCTL_SET_SAREA_CTX32)] = compat_drm_setsareactx,
	[DRM_IOCTL_NR(DRM_IOCTL_GET_SAREA_CTX32)] = compat_drm_getsareactx,
	[DRM_IOCTL_NR(DRM_IOCTL_RES_CTX32)] = compat_drm_resctx,
	[DRM_IOCTL_NR(DRM_IOCTL_DMA32)] = compat_drm_dma,
#if __OS_HAS_AGP
	[DRM_IOCTL_NR(DRM_IOCTL_AGP_ENABLE32)] = compat_drm_agp_enable,
	[DRM_IOCTL_NR(DRM_IOCTL_AGP_INFO32)] = compat_drm_agp_info,
	[DRM_IOCTL_NR(DRM_IOCTL_AGP_ALLOC32)] = compat_drm_agp_alloc,
	[DRM_IOCTL_NR(DRM_IOCTL_AGP_FREE32)] = compat_drm_agp_free,
	[DRM_IOCTL_NR(DRM_IOCTL_AGP_BIND32)] = compat_drm_agp_bind,
	[DRM_IOCTL_NR(DRM_IOCTL_AGP_UNBIND32)] = compat_drm_agp_unbind,
#endif
	[DRM_IOCTL_NR(DRM_IOCTL_SG_ALLOC32)] = compat_drm_sg_alloc,
	[DRM_IOCTL_NR(DRM_IOCTL_SG_FREE32)] = compat_drm_sg_free,
	[DRM_IOCTL_NR(DRM_IOCTL_WAIT_VBLANK32)] = compat_drm_wait_vblank,
};

/**
 * Called whenever a 32-bit process running under a 64-bit kernel
 * performs an ioctl on /dev/drm.
 *
 * \param filp file pointer.
 * \param cmd command.
 * \param arg user argument.
 * \return zero on success or negative number on failure.
 */
long drm_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
{
	unsigned int nr = DRM_IOCTL_NR(cmd);
	drm_ioctl_compat_t *fn;
	int ret;

	if (nr >= DRM_ARRAY_SIZE(drm_compat_ioctls))
		return -ENOTTY;

	fn = drm_compat_ioctls[nr];

	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;
}
EXPORT_SYMBOL(drm_compat_ioctl);
generated by cgit v1.2.3 (git 2.25.1) at 2025-11-14 02:00:16 +0000