diff options
Diffstat (limited to 'bsd/i830/i830_dma.c')
| -rw-r--r-- | bsd/i830/i830_dma.c | 1420 |
1 files changed, 0 insertions, 1420 deletions
diff --git a/bsd/i830/i830_dma.c b/bsd/i830/i830_dma.c deleted file mode 100644 index fbdc9523..00000000 --- a/bsd/i830/i830_dma.c +++ /dev/null @@ -1,1420 +0,0 @@ -/* i830_dma.c -- DMA support for the I830 -*- 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 <faith@valinux.com> - * Jeff Hartmann <jhartmann@valinux.com> - * Keith Whitwell <keithw@valinux.com> - * Abraham vd Merwe <abraham@2d3d.co.za> - * - */ - -#define __NO_VERSION__ -#include "i830.h" -#include "drmP.h" -#include "drm.h" -#include "i830_drm.h" -#include "i830_drv.h" -#include <linux/interrupt.h> /* For task queue support */ - -/* in case we don't have a 2.3.99-pre6 kernel or later: */ -#ifndef VM_DONTCOPY -#define VM_DONTCOPY 0 -#endif - -#define I830_BUF_FREE 2 -#define I830_BUF_CLIENT 1 -#define I830_BUF_HARDWARE 0 - -#define I830_BUF_UNMAPPED 0 -#define I830_BUF_MAPPED 1 - -#define RING_LOCALS unsigned int outring, ringmask; volatile char *virt; - - -#define DO_IDLE_WORKAROUND() \ -do { \ - int _head; \ - int _tail; \ - int _i; \ - do { \ - _head = I830_READ(LP_RING + RING_HEAD) & HEAD_ADDR; \ - _tail = I830_READ(LP_RING + RING_TAIL) & TAIL_ADDR; \ - for(_i = 0; _i < 65535; _i++); \ - } while(_head != _tail); \ -} while(0) - -#define I830_SYNC_WORKAROUND 0 - -#define BEGIN_LP_RING(n) do { \ - if (I830_VERBOSE) \ - DRM_DEBUG("BEGIN_LP_RING(%d) in %s\n", \ - n, __FUNCTION__); \ - if (I830_SYNC_WORKAROUND) \ - DO_IDLE_WORKAROUND(); \ - if (dev_priv->ring.space < n*4) \ - i830_wait_ring(dev, n*4); \ - dev_priv->ring.space -= n*4; \ - outring = dev_priv->ring.tail; \ - ringmask = dev_priv->ring.tail_mask; \ - virt = dev_priv->ring.virtual_start; \ -} while (0) - -#define ADVANCE_LP_RING() do { \ - if (I830_VERBOSE) DRM_DEBUG("ADVANCE_LP_RING\n"); \ - dev_priv->ring.tail = outring; \ - I830_WRITE(LP_RING + RING_TAIL, outring); \ -} while(0) - -#define OUT_RING(n) do { \ - if (I830_VERBOSE) DRM_DEBUG(" OUT_RING %x\n", (int)(n)); \ - *(volatile unsigned int *)(virt + outring) = n; \ - outring += 4; \ - outring &= ringmask; \ -} while (0) - -static inline void i830_print_status_page(drm_device_t *dev) -{ - drm_device_dma_t *dma = dev->dma; - drm_i830_private_t *dev_priv = dev->dev_private; - u32 *temp = (u32 *)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: Driver Counter : %d\n", temp[5]); - for(i = 9; i < dma->buf_count + 9; i++) { - DRM_DEBUG( "buffer status idx : %d used: %d\n", i - 9, temp[i]); - } -} - -static drm_buf_t *i830_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_i830_buf_priv_t *buf_priv = buf->dev_private; - /* In use is already a pointer */ - used = cmpxchg(buf_priv->in_use, I830_BUF_FREE, - I830_BUF_CLIENT); - if(used == I830_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 i830_freelist_put(drm_device_t *dev, drm_buf_t *buf) -{ - drm_i830_buf_priv_t *buf_priv = buf->dev_private; - int used; - - /* In use is already a pointer */ - used = cmpxchg(buf_priv->in_use, I830_BUF_CLIENT, I830_BUF_FREE); - if(used != I830_BUF_CLIENT) { - DRM_ERROR("Freeing buffer thats not in use : %d\n", buf->idx); - return -EINVAL; - } - - return 0; -} - -static struct file_operations i830_buffer_fops = { - open: DRM(open), - flush: DRM(flush), - release: DRM(release), - ioctl: DRM(ioctl), - mmap: i830_mmap_buffers, - read: DRM(read), - fasync: DRM(fasync), - poll: DRM(poll), -}; - -int i830_mmap_buffers(struct file *filp, struct vm_area_struct *vma) -{ - drm_file_t *priv = filp->private_data; - drm_device_t *dev; - drm_i830_private_t *dev_priv; - drm_buf_t *buf; - drm_i830_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 = I830_BUF_MAPPED; - unlock_kernel(); - - if (remap_page_range(vma->vm_start, - VM_OFFSET(vma), - vma->vm_end - vma->vm_start, - vma->vm_page_prot)) return -EAGAIN; - return 0; -} - -static int i830_map_buffer(drm_buf_t *buf, struct file *filp) -{ - drm_file_t *priv = filp->private_data; - drm_device_t *dev = priv->dev; - drm_i830_buf_priv_t *buf_priv = buf->dev_private; - drm_i830_private_t *dev_priv = dev->dev_private; - struct file_operations *old_fops; - int retcode = 0; - - if(buf_priv->currently_mapped == I830_BUF_MAPPED) return -EINVAL; - - if(VM_DONTCOPY != 0) { -#if LINUX_VERSION_CODE <= 0x020402 - down( ¤t->mm->mmap_sem ); -#else - down_write( ¤t->mm->mmap_sem ); -#endif - old_fops = filp->f_op; - filp->f_op = &i830_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_DEBUG("mmap error\n"); - retcode = (signed int)buf_priv->virtual; - buf_priv->virtual = 0; - } -#if LINUX_VERSION_CODE <= 0x020402 - up( ¤t->mm->mmap_sem ); -#else - up_write( ¤t->mm->mmap_sem ); -#endif - } else { - buf_priv->virtual = buf_priv->kernel_virtual; - buf_priv->currently_mapped = I830_BUF_MAPPED; - } - return retcode; -} - -static int i830_unmap_buffer(drm_buf_t *buf) -{ - drm_i830_buf_priv_t *buf_priv = buf->dev_private; - int retcode = 0; - - if(VM_DONTCOPY != 0) { - if(buf_priv->currently_mapped != I830_BUF_MAPPED) - return -EINVAL; -#if LINUX_VERSION_CODE <= 0x020402 - down( ¤t->mm->mmap_sem ); -#else - down_write( ¤t->mm->mmap_sem ); -#endif -#if LINUX_VERSION_CODE < 0x020399 - retcode = do_munmap((unsigned long)buf_priv->virtual, - (size_t) buf->total); -#else - retcode = do_munmap(current->mm, - (unsigned long)buf_priv->virtual, - (size_t) buf->total); -#endif -#if LINUX_VERSION_CODE <= 0x020402 - up( ¤t->mm->mmap_sem ); -#else - up_write( ¤t->mm->mmap_sem ); -#endif - } - buf_priv->currently_mapped = I830_BUF_UNMAPPED; - buf_priv->virtual = 0; - - return retcode; -} - -static int i830_dma_get_buffer(drm_device_t *dev, drm_i830_dma_t *d, - struct file *filp) -{ - drm_file_t *priv = filp->private_data; - drm_buf_t *buf; - drm_i830_buf_priv_t *buf_priv; - int retcode = 0; - - buf = i830_freelist_get(dev); - if (!buf) { - retcode = -ENOMEM; - DRM_DEBUG("retcode=%d\n", retcode); - return retcode; - } - - retcode = i830_map_buffer(buf, filp); - if(retcode) { - i830_freelist_put(dev, buf); - DRM_DEBUG("mapbuf failed, retcode %d\n", retcode); - return retcode; - } - buf->pid = priv->pid; - 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; -} - -static unsigned long i830_alloc_page(drm_device_t *dev) -{ - unsigned long address; - - address = __get_free_page(GFP_KERNEL); - if(address == 0UL) - return 0; - - atomic_inc(&virt_to_page(address)->count); - set_bit(PG_locked, &virt_to_page(address)->flags); - - return address; -} - -static void i830_free_page(drm_device_t *dev, unsigned long page) -{ - if(page == 0UL) - return; - - atomic_dec(&virt_to_page(page)->count); - clear_bit(PG_locked, &virt_to_page(page)->flags); - wake_up(&virt_to_page(page)->wait); - free_page(page); - return; -} - -static int i830_dma_cleanup(drm_device_t *dev) -{ - drm_device_dma_t *dma = dev->dma; - - if(dev->dev_private) { - int i; - drm_i830_private_t *dev_priv = - (drm_i830_private_t *) dev->dev_private; - - if(dev_priv->ring.virtual_start) { - DRM(ioremapfree)((void *) dev_priv->ring.virtual_start, - dev_priv->ring.Size); - } - if(dev_priv->hw_status_page != 0UL) { - i830_free_page(dev, dev_priv->hw_status_page); - /* Need to rewrite hardware status page */ - I830_WRITE(0x02080, 0x1ffff000); - } - DRM(free)(dev->dev_private, sizeof(drm_i830_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_i830_buf_priv_t *buf_priv = buf->dev_private; - DRM(ioremapfree)(buf_priv->kernel_virtual, buf->total); - } - } - return 0; -} - -static int i830_wait_ring(drm_device_t *dev, int n) -{ - drm_i830_private_t *dev_priv = dev->dev_private; - drm_i830_ring_buffer_t *ring = &(dev_priv->ring); - int iters = 0; - unsigned long end; - unsigned int last_head = I830_READ(LP_RING + RING_HEAD) & HEAD_ADDR; - - end = jiffies + (HZ*3); - while (ring->space < n) { - int i; - - ring->head = I830_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((signed)(end - jiffies) <= 0) { - DRM_ERROR("space: %d wanted %d\n", ring->space, n); - DRM_ERROR("lockup\n"); - goto out_wait_ring; - } - - for (i = 0 ; i < 2000 ; i++) ; - } - -out_wait_ring: - return iters; -} - -static void i830_kernel_lost_context(drm_device_t *dev) -{ - drm_i830_private_t *dev_priv = dev->dev_private; - drm_i830_ring_buffer_t *ring = &(dev_priv->ring); - - ring->head = I830_READ(LP_RING + RING_HEAD) & HEAD_ADDR; - ring->tail = I830_READ(LP_RING + RING_TAIL); - ring->space = ring->head - (ring->tail+8); - if (ring->space < 0) ring->space += ring->Size; -} - -static int i830_freelist_init(drm_device_t *dev, drm_i830_private_t *dev_priv) -{ - drm_device_dma_t *dma = dev->dma; - int my_idx = 36; - 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_i830_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 = I830_BUF_FREE; - - buf_priv->kernel_virtual = DRM(ioremap)(buf->bus_address, - buf->total); - } - return 0; -} - -static int i830_dma_initialize(drm_device_t *dev, - drm_i830_private_t *dev_priv, - drm_i830_init_t *init) -{ - struct list_head *list; - - memset(dev_priv, 0, sizeof(drm_i830_private_t)); - - list_for_each(list, &dev->maplist->head) { - drm_map_list_t *r_list = (drm_map_list_t *)list; - 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; - i830_dma_cleanup(dev); - DRM_ERROR("can not find sarea!\n"); - return -EINVAL; - } - DRM_FIND_MAP( dev_priv->mmio_map, init->mmio_offset ); - if(!dev_priv->mmio_map) { - dev->dev_private = (void *)dev_priv; - i830_dma_cleanup(dev); - DRM_ERROR("can not find mmio map!\n"); - return -EINVAL; - } - DRM_FIND_MAP( dev_priv->buffer_map, init->buffers_offset ); - if(!dev_priv->buffer_map) { - dev->dev_private = (void *)dev_priv; - i830_dma_cleanup(dev); - DRM_ERROR("can not find dma buffer map!\n"); - return -EINVAL; - } - - dev_priv->sarea_priv = (drm_i830_sarea_t *) - ((u8 *)dev_priv->sarea_map->handle + - init->sarea_priv_offset); - - atomic_set(&dev_priv->flush_done, 0); - init_waitqueue_head(&dev_priv->flush_queue); - - 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); - - if (dev_priv->ring.virtual_start == NULL) { - dev->dev_private = (void *) dev_priv; - i830_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_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; - - dev_priv->cpp = init->cpp; - /* We are using seperate values as placeholders for mechanisms for - * private backbuffer/depthbuffer usage. - */ - - dev_priv->back_pitch = init->back_pitch; - dev_priv->depth_pitch = init->depth_pitch; - - /* Program Hardware Status Page */ - dev_priv->hw_status_page = i830_alloc_page(dev); - if(dev_priv->hw_status_page == 0UL) { - dev->dev_private = (void *)dev_priv; - i830_dma_cleanup(dev); - DRM_ERROR("Can not allocate hardware status page\n"); - return -ENOMEM; - } - memset((void *) dev_priv->hw_status_page, 0, PAGE_SIZE); - DRM_DEBUG("hw status page @ %lx\n", dev_priv->hw_status_page); - - I830_WRITE(0x02080, virt_to_bus((void *)dev_priv->hw_status_page)); - DRM_DEBUG("Enabled hardware status page\n"); - - /* Now we need to init our freelist */ - if(i830_freelist_init(dev, dev_priv) != 0) { - dev->dev_private = (void *)dev_priv; - i830_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; -} - -int i830_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_i830_private_t *dev_priv; - drm_i830_init_t init; - int retcode = 0; - - if (copy_from_user(&init, (drm_i830_init_t *)arg, sizeof(init))) - return -EFAULT; - - switch(init.func) { - case I830_INIT_DMA: - dev_priv = DRM(alloc)(sizeof(drm_i830_private_t), - DRM_MEM_DRIVER); - if(dev_priv == NULL) return -ENOMEM; - retcode = i830_dma_initialize(dev, dev_priv, &init); - break; - case I830_CLEANUP_DMA: - retcode = i830_dma_cleanup(dev); - break; - default: - retcode = -EINVAL; - break; - } - - return retcode; -} - -/* Most efficient way to verify state for the i830 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 i830EmitContextVerified( drm_device_t *dev, - volatile unsigned int *code ) -{ - drm_i830_private_t *dev_priv = dev->dev_private; - int i, j = 0; - unsigned int tmp; - RING_LOCALS; - - BEGIN_LP_RING( I830_CTX_SETUP_SIZE ); - for ( i = 0 ; i < I830_CTX_SETUP_SIZE ; i++ ) { - tmp = code[i]; - -#if 0 - if ((tmp & (7<<29)) == (3<<29) && - (tmp & (0x1f<<24)) < (0x1d<<24)) { - OUT_RING( tmp ); - j++; - } else { - printk("Skipping %d\n", i); - } -#else - OUT_RING( tmp ); - j++; -#endif - } - - if (j & 1) - OUT_RING( 0 ); - - ADVANCE_LP_RING(); -} - -static void i830EmitTexVerified( drm_device_t *dev, - volatile unsigned int *code ) -{ - drm_i830_private_t *dev_priv = dev->dev_private; - int i, j = 0; - unsigned int tmp; - RING_LOCALS; - - BEGIN_LP_RING( I830_TEX_SETUP_SIZE ); - - OUT_RING( GFX_OP_MAP_INFO ); - OUT_RING( code[I830_TEXREG_MI1] ); - OUT_RING( code[I830_TEXREG_MI2] ); - OUT_RING( code[I830_TEXREG_MI3] ); - OUT_RING( code[I830_TEXREG_MI4] ); - OUT_RING( code[I830_TEXREG_MI5] ); - - for ( i = 6 ; i < I830_TEX_SETUP_SIZE ; i++ ) { - tmp = code[i]; - OUT_RING( tmp ); - j++; - } - - if (j & 1) - OUT_RING( 0 ); - - ADVANCE_LP_RING(); -} - -static void i830EmitTexBlendVerified( drm_device_t *dev, - volatile unsigned int *code, - volatile unsigned int num) -{ - drm_i830_private_t *dev_priv = dev->dev_private; - int i, j = 0; - unsigned int tmp; - RING_LOCALS; - - BEGIN_LP_RING( num ); - - for ( i = 0 ; i < num ; i++ ) { - tmp = code[i]; - OUT_RING( tmp ); - j++; - } - - if (j & 1) - OUT_RING( 0 ); - - ADVANCE_LP_RING(); -} - -static void i830EmitTexPalette( drm_device_t *dev, - unsigned int *palette, - int number, - int is_shared ) -{ - drm_i830_private_t *dev_priv = dev->dev_private; - int i; - RING_LOCALS; - - BEGIN_LP_RING( 258 ); - - if(is_shared == 1) { - OUT_RING(CMD_OP_MAP_PALETTE_LOAD | - MAP_PALETTE_NUM(0) | - MAP_PALETTE_BOTH); - } else { - OUT_RING(CMD_OP_MAP_PALETTE_LOAD | MAP_PALETTE_NUM(number)); - } - for(i = 0; i < 256; i++) { - OUT_RING(palette[i]); - } - OUT_RING(0); -} - -/* Need to do some additional checking when setting the dest buffer. - */ -static void i830EmitDestVerified( drm_device_t *dev, - volatile unsigned int *code ) -{ - drm_i830_private_t *dev_priv = dev->dev_private; - unsigned int tmp; - RING_LOCALS; - - BEGIN_LP_RING( I830_DEST_SETUP_SIZE + 6 ); - - tmp = code[I830_DESTREG_CBUFADDR]; - if (tmp == dev_priv->front_di1) { - /* Don't use fence when front buffer rendering */ - OUT_RING( CMD_OP_DESTBUFFER_INFO ); - OUT_RING( BUF_3D_ID_COLOR_BACK | - BUF_3D_PITCH(dev_priv->back_pitch * dev_priv->cpp) ); - OUT_RING( tmp ); - - OUT_RING( CMD_OP_DESTBUFFER_INFO ); - OUT_RING( BUF_3D_ID_DEPTH | - BUF_3D_PITCH(dev_priv->depth_pitch * dev_priv->cpp)); - OUT_RING( dev_priv->zi1 ); - } else if(tmp == dev_priv->back_di1) { - OUT_RING( CMD_OP_DESTBUFFER_INFO ); - OUT_RING( BUF_3D_ID_COLOR_BACK | - BUF_3D_PITCH(dev_priv->back_pitch * dev_priv->cpp) | - BUF_3D_USE_FENCE); - OUT_RING( tmp ); - - OUT_RING( CMD_OP_DESTBUFFER_INFO ); - OUT_RING( BUF_3D_ID_DEPTH | BUF_3D_USE_FENCE | - BUF_3D_PITCH(dev_priv->depth_pitch * dev_priv->cpp)); - OUT_RING( dev_priv->zi1 ); - } else { - DRM_DEBUG("bad di1 %x (allow %x or %x)\n", - tmp, dev_priv->front_di1, dev_priv->back_di1); - } - - /* invarient: - */ - - - OUT_RING( GFX_OP_DESTBUFFER_VARS ); - OUT_RING( code[I830_DESTREG_DV1] ); - - OUT_RING( GFX_OP_DRAWRECT_INFO ); - OUT_RING( code[I830_DESTREG_DR1] ); - OUT_RING( code[I830_DESTREG_DR2] ); - OUT_RING( code[I830_DESTREG_DR3] ); - OUT_RING( code[I830_DESTREG_DR4] ); - - /* Need to verify this */ - tmp = code[I830_DESTREG_SENABLE]; - if((tmp & ~0x3) == GFX_OP_SCISSOR_ENABLE) { - OUT_RING( tmp ); - } else { - DRM_DEBUG("bad scissor enable\n"); - OUT_RING( 0 ); - } - - OUT_RING( code[I830_DESTREG_SENABLE] ); - - OUT_RING( GFX_OP_SCISSOR_RECT ); - OUT_RING( code[I830_DESTREG_SR1] ); - OUT_RING( code[I830_DESTREG_SR2] ); - - ADVANCE_LP_RING(); -} - -static void i830EmitState( drm_device_t *dev ) -{ - drm_i830_private_t *dev_priv = dev->dev_private; - drm_i830_sarea_t *sarea_priv = dev_priv->sarea_priv; - unsigned int dirty = sarea_priv->dirty; - - if (dirty & I830_UPLOAD_BUFFERS) { - i830EmitDestVerified( dev, sarea_priv->BufferState ); - sarea_priv->dirty &= ~I830_UPLOAD_BUFFERS; - } - - if (dirty & I830_UPLOAD_CTX) { - i830EmitContextVerified( dev, sarea_priv->ContextState ); - sarea_priv->dirty &= ~I830_UPLOAD_CTX; - } - - if (dirty & I830_UPLOAD_TEX0) { - i830EmitTexVerified( dev, sarea_priv->TexState[0] ); - sarea_priv->dirty &= ~I830_UPLOAD_TEX0; - } - - if (dirty & I830_UPLOAD_TEX1) { - i830EmitTexVerified( dev, sarea_priv->TexState[1] ); - sarea_priv->dirty &= ~I830_UPLOAD_TEX1; - } - - if (dirty & I830_UPLOAD_TEXBLEND0) { - i830EmitTexBlendVerified( dev, sarea_priv->TexBlendState[0], - sarea_priv->TexBlendStateWordsUsed[0]); - sarea_priv->dirty &= ~I830_UPLOAD_TEXBLEND0; - } - - if (dirty & I830_UPLOAD_TEXBLEND1) { - i830EmitTexBlendVerified( dev, sarea_priv->TexBlendState[1], - sarea_priv->TexBlendStateWordsUsed[1]); - sarea_priv->dirty &= ~I830_UPLOAD_TEXBLEND1; - } - - if (dirty & I830_UPLOAD_TEX_PALETTE_SHARED) { - i830EmitTexPalette(dev, sarea_priv->Palette[0], 0, 1); - } else { - if (dirty & I830_UPLOAD_TEX_PALETTE_N(0)) { - i830EmitTexPalette(dev, sarea_priv->Palette[0], 0, 0); - sarea_priv->dirty &= ~I830_UPLOAD_TEX_PALETTE_N(0); - } - if (dirty & I830_UPLOAD_TEX_PALETTE_N(1)) { - i830EmitTexPalette(dev, sarea_priv->Palette[1], 1, 0); - sarea_priv->dirty &= ~I830_UPLOAD_TEX_PALETTE_N(1); - } - } -} - -static void i830_dma_dispatch_clear( drm_device_t *dev, int flags, - unsigned int clear_color, - unsigned int clear_zval, - unsigned int clear_depthmask) -{ - drm_i830_private_t *dev_priv = dev->dev_private; - drm_i830_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 = dev_priv->cpp; - int i; - unsigned int BR13, CMD, D_CMD; - RING_LOCALS; - - i830_kernel_lost_context(dev); - - switch(cpp) { - case 2: - BR13 = (0xF0 << 16) | (pitch * cpp) | (1<<24); - D_CMD = CMD = XY_COLOR_BLT_CMD; - break; - case 4: - BR13 = (0xF0 << 16) | (pitch * cpp) | (1<<24) | (1<<25); - CMD = (XY_COLOR_BLT_CMD | XY_COLOR_BLT_WRITE_ALPHA | - XY_COLOR_BLT_WRITE_RGB); - D_CMD = XY_COLOR_BLT_CMD; - if(clear_depthmask & 0x00ffffff) - D_CMD |= XY_COLOR_BLT_WRITE_RGB; - if(clear_depthmask & 0xff000000) - D_CMD |= XY_COLOR_BLT_WRITE_ALPHA; - break; - default: - BR13 = (0xF0 << 16) | (pitch * cpp) | (1<<24); - D_CMD = CMD = XY_COLOR_BLT_CMD; - break; - } - - if (nbox > I830_NR_SAREA_CLIPRECTS) - nbox = I830_NR_SAREA_CLIPRECTS; - - for (i = 0 ; i < nbox ; i++, pbox++) { - if (pbox->x1 > pbox->x2 || - pbox->y1 > pbox->y2 || - pbox->x2 > dev_priv->w || - pbox->y2 > dev_priv->h) - continue; - - if ( flags & I830_FRONT ) { - DRM_DEBUG("clear front\n"); - BEGIN_LP_RING( 6 ); - OUT_RING( CMD ); - OUT_RING( BR13 ); - OUT_RING( (pbox->y1 << 16) | pbox->x1 ); - OUT_RING( (pbox->y2 << 16) | pbox->x2 ); - OUT_RING( 0 ); - OUT_RING( clear_color ); - ADVANCE_LP_RING(); - } - - if ( flags & I830_BACK ) { - DRM_DEBUG("clear back\n"); - BEGIN_LP_RING( 6 ); - OUT_RING( CMD ); - OUT_RING( BR13 ); - OUT_RING( (pbox->y1 << 16) | pbox->x1 ); - OUT_RING( (pbox->y2 << 16) | pbox->x2 ); - OUT_RING( dev_priv->back_offset ); - OUT_RING( clear_color ); - ADVANCE_LP_RING(); - } - - if ( flags & I830_DEPTH ) { - DRM_DEBUG("clear depth\n"); - BEGIN_LP_RING( 6 ); - OUT_RING( D_CMD ); - OUT_RING( BR13 ); - OUT_RING( (pbox->y1 << 16) | pbox->x1 ); - OUT_RING( (pbox->y2 << 16) | pbox->x2 ); - OUT_RING( dev_priv->depth_offset ); - OUT_RING( clear_zval ); - ADVANCE_LP_RING(); - } - } -} - -static void i830_dma_dispatch_swap( drm_device_t *dev ) -{ - drm_i830_private_t *dev_priv = dev->dev_private; - drm_i830_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 = dev_priv->cpp; - int ofs = dev_priv->back_offset; - int i; - unsigned int CMD, BR13; - RING_LOCALS; - - DRM_DEBUG("swapbuffers\n"); - - switch(cpp) { - case 2: - BR13 = (pitch * cpp) | (0xCC << 16) | (1<<24); - CMD = XY_SRC_COPY_BLT_CMD; - break; - case 4: - BR13 = (pitch * cpp) | (0xCC << 16) | (1<<24) | (1<<25); - CMD = (XY_SRC_COPY_BLT_CMD | XY_SRC_COPY_BLT_WRITE_ALPHA | - XY_SRC_COPY_BLT_WRITE_RGB); - break; - default: - BR13 = (pitch * cpp) | (0xCC << 16) | (1<<24); - CMD = XY_SRC_COPY_BLT_CMD; - break; - } - - i830_kernel_lost_context(dev); - - if (nbox > I830_NR_SAREA_CLIPRECTS) - nbox = I830_NR_SAREA_CLIPRECTS; - - for (i = 0 ; i < nbox; i++, pbox++) - { - if (pbox->x1 > pbox->x2 || - pbox->y1 > pbox->y2 || - pbox->x2 > dev_priv->w || - pbox->y2 > dev_priv->h) - continue; - - DRM_DEBUG("dispatch swap %d,%d-%d,%d!\n", - pbox->x1, pbox->y1, - pbox->x2, pbox->y2); - - BEGIN_LP_RING( 8 ); - OUT_RING( CMD ); - OUT_RING( BR13 ); - - OUT_RING( (pbox->y1 << 16) | - pbox->x1 ); - OUT_RING( (pbox->y2 << 16) | - pbox->x2 ); - - OUT_RING( 0 /* front ofs always zero */ ); - OUT_RING( (pbox->y1 << 16) | - pbox->x1 ); - - OUT_RING( BR13 & 0xffff ); - OUT_RING( ofs ); - - ADVANCE_LP_RING(); - } -} - - -static void i830_dma_dispatch_vertex(drm_device_t *dev, - drm_buf_t *buf, - int discard, - int used) -{ - drm_i830_private_t *dev_priv = dev->dev_private; - drm_i830_buf_priv_t *buf_priv = buf->dev_private; - drm_i830_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, u; - RING_LOCALS; - - i830_kernel_lost_context(dev); - - if (nbox > I830_NR_SAREA_CLIPRECTS) - nbox = I830_NR_SAREA_CLIPRECTS; - - if (discard) { - u = cmpxchg(buf_priv->in_use, I830_BUF_CLIENT, - I830_BUF_HARDWARE); - if(u != I830_BUF_CLIENT) { - DRM_DEBUG("xxxx 2\n"); - } - } - - if (used > 4*1024) - used = 0; - - if (sarea_priv->dirty) - i830EmitState( dev ); - - DRM_DEBUG("dispatch vertex addr 0x%lx, used 0x%x nbox %d\n", - address, used, nbox); - - dev_priv->counter++; - DRM_DEBUG( "dispatch counter : %ld\n", dev_priv->counter); - DRM_DEBUG( "i830_dma_dispatch\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 == I830_BUF_MAPPED) { - *(u32 *)buf_priv->virtual = (GFX_OP_PRIMITIVE | - sarea_priv->vertex_prim | - ((used/4)-2)); - - if (used & 4) { - *(u32 *)((u32)buf_priv->virtual + used) = 0; - used += 4; - } - - i830_unmap_buffer(buf); - } - - if (used) { - do { - if (i < nbox) { - BEGIN_LP_RING(6); - OUT_RING( GFX_OP_DRAWRECT_INFO ); - OUT_RING( sarea_priv->BufferState[I830_DESTREG_DR1] ); - OUT_RING( box[i].x1 | (box[i].y1<<16) ); - OUT_RING( box[i].x2 | (box[i].y2<<16) ); - OUT_RING( sarea_priv->BufferState[I830_DESTREG_DR4] ); - OUT_RING( 0 ); - ADVANCE_LP_RING(); - } - - BEGIN_LP_RING(4); - - OUT_RING( MI_BATCH_BUFFER ); - OUT_RING( start | MI_BATCH_NON_SECURE ); - OUT_RING( start + used - 4 ); - OUT_RING( 0 ); - ADVANCE_LP_RING(); - - } while (++i < nbox); - } - - BEGIN_LP_RING(10); - OUT_RING( CMD_STORE_DWORD_IDX ); - OUT_RING( 20 ); - OUT_RING( dev_priv->counter ); - OUT_RING( 0 ); - - if (discard) { - OUT_RING( CMD_STORE_DWORD_IDX ); - OUT_RING( buf_priv->my_use_idx ); - OUT_RING( I830_BUF_FREE ); - OUT_RING( 0 ); - } - - OUT_RING( CMD_REPORT_HEAD ); - OUT_RING( 0 ); - ADVANCE_LP_RING(); -} - -/* Interrupts are only for flushing */ -void i830_dma_service(int irq, void *device, struct pt_regs *regs) -{ - drm_device_t *dev = (drm_device_t *)device; - drm_i830_private_t *dev_priv = (drm_i830_private_t *)dev->dev_private; - u16 temp; - - temp = I830_READ16(I830REG_INT_IDENTITY_R); - temp = temp & ~(0x6000); - if(temp != 0) I830_WRITE16(I830REG_INT_IDENTITY_R, - temp); /* Clear all interrupts */ - else - return; - - queue_task(&dev->tq, &tq_immediate); - mark_bh(IMMEDIATE_BH); -} - -void DRM(dma_immediate_bh)(void *device) -{ - drm_device_t *dev = (drm_device_t *) device; - drm_i830_private_t *dev_priv = (drm_i830_private_t *)dev->dev_private; - - atomic_set(&dev_priv->flush_done, 1); - wake_up_interruptible(&dev_priv->flush_queue); -} - -static inline void i830_dma_emit_flush(drm_device_t *dev) -{ - drm_i830_private_t *dev_priv = dev->dev_private; - RING_LOCALS; - - i830_kernel_lost_context(dev); - - BEGIN_LP_RING(2); - OUT_RING( CMD_REPORT_HEAD ); - OUT_RING( GFX_OP_USER_INTERRUPT ); - ADVANCE_LP_RING(); - - i830_wait_ring( dev, dev_priv->ring.Size - 8 ); - atomic_set(&dev_priv->flush_done, 1); - wake_up_interruptible(&dev_priv->flush_queue); -} - -static inline void i830_dma_quiescent_emit(drm_device_t *dev) -{ - drm_i830_private_t *dev_priv = dev->dev_private; - RING_LOCALS; - - i830_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( GFX_OP_USER_INTERRUPT ); - ADVANCE_LP_RING(); - - i830_wait_ring( dev, dev_priv->ring.Size - 8 ); - atomic_set(&dev_priv->flush_done, 1); - wake_up_interruptible(&dev_priv->flush_queue); -} - -void i830_dma_quiescent(drm_device_t *dev) -{ - DECLARE_WAITQUEUE(entry, current); - drm_i830_private_t *dev_priv = (drm_i830_private_t *)dev->dev_private; - unsigned long end; - - if(dev_priv == NULL) { - return; - } - atomic_set(&dev_priv->flush_done, 0); - add_wait_queue(&dev_priv->flush_queue, &entry); - end = jiffies + (HZ*3); - - for (;;) { - current->state = TASK_INTERRUPTIBLE; - i830_dma_quiescent_emit(dev); - if (atomic_read(&dev_priv->flush_done) == 1) break; - if((signed)(end - jiffies) <= 0) { - DRM_ERROR("lockup\n"); - break; - } - schedule_timeout(HZ*3); - if (signal_pending(current)) { - break; - } - } - - current->state = TASK_RUNNING; - remove_wait_queue(&dev_priv->flush_queue, &entry); - - return; -} - -static int i830_flush_queue(drm_device_t *dev) -{ - DECLARE_WAITQUEUE(entry, current); - drm_i830_private_t *dev_priv = (drm_i830_private_t *)dev->dev_private; - drm_device_dma_t *dma = dev->dma; - unsigned long end; - int i, ret = 0; - - if(dev_priv == NULL) { - return 0; - } - atomic_set(&dev_priv->flush_done, 0); - add_wait_queue(&dev_priv->flush_queue, &entry); - end = jiffies + (HZ*3); - for (;;) { - current->state = TASK_INTERRUPTIBLE; - i830_dma_emit_flush(dev); - if (atomic_read(&dev_priv->flush_done) == 1) break; - if((signed)(end - jiffies) <= 0) { - DRM_ERROR("lockup\n"); - break; - } - schedule_timeout(HZ*3); - if (signal_pending(current)) { - ret = -EINTR; /* Can't restart */ - break; - } - } - - current->state = TASK_RUNNING; - remove_wait_queue(&dev_priv->flush_queue, &entry); - - - for (i = 0; i < dma->buf_count; i++) { - drm_buf_t *buf = dma->buflist[ i ]; - drm_i830_buf_priv_t *buf_priv = buf->dev_private; - - int used = cmpxchg(buf_priv->in_use, I830_BUF_HARDWARE, - I830_BUF_FREE); - - if (used == I830_BUF_HARDWARE) - DRM_DEBUG("reclaimed from HARDWARE\n"); - if (used == I830_BUF_CLIENT) - DRM_DEBUG("still on client HARDWARE\n"); - } - - return ret; -} - -/* Must be called with the lock held */ -void i830_reclaim_buffers(drm_device_t *dev, pid_t pid) -{ - drm_device_dma_t *dma = dev->dma; - int i; - - if (!dma) return; - if (!dev->dev_private) return; - if (!dma->buflist) return; - - i830_flush_queue(dev); - - for (i = 0; i < dma->buf_count; i++) { - drm_buf_t *buf = dma->buflist[ i ]; - drm_i830_buf_priv_t *buf_priv = buf->dev_private; - - if (buf->pid == pid && buf_priv) { - int used = cmpxchg(buf_priv->in_use, I830_BUF_CLIENT, - I830_BUF_FREE); - - if (used == I830_BUF_CLIENT) - DRM_DEBUG("reclaimed from client\n"); - if(buf_priv->currently_mapped == I830_BUF_MAPPED) - buf_priv->currently_mapped = I830_BUF_UNMAPPED; - } - } -} - -int i830_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; - - DRM_DEBUG("i830_flush_ioctl\n"); - if(!_DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock)) { - DRM_ERROR("i830_flush_ioctl called without lock held\n"); - return -EINVAL; - } - - i830_flush_queue(dev); - return 0; -} - -int i830_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_i830_private_t *dev_priv = (drm_i830_private_t *)dev->dev_private; - u32 *hw_status = (u32 *)dev_priv->hw_status_page; - drm_i830_sarea_t *sarea_priv = (drm_i830_sarea_t *) - dev_priv->sarea_priv; - drm_i830_vertex_t vertex; - - if (copy_from_user(&vertex, (drm_i830_vertex_t *)arg, sizeof(vertex))) - return -EFAULT; - - if(!_DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock)) { - DRM_ERROR("i830_dma_vertex called without lock held\n"); - return -EINVAL; - } - - DRM_DEBUG("i830 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; - - i830_dma_dispatch_vertex( dev, - dma->buflist[ vertex.idx ], - vertex.discard, vertex.used ); - - sarea_priv->last_enqueue = dev_priv->counter-1; - sarea_priv->last_dispatch = (int) hw_status[5]; - - return 0; -} - -int i830_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_i830_clear_t clear; - - if (copy_from_user(&clear, (drm_i830_clear_t *)arg, sizeof(clear))) - return -EFAULT; - - if(!_DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock)) { - DRM_ERROR("i830_clear_bufs called without lock held\n"); - return -EINVAL; - } - - /* GH: Someone's doing nasty things... */ - if (!dev->dev_private) { - return -EINVAL; - } - - i830_dma_dispatch_clear( dev, clear.flags, - clear.clear_color, - clear.clear_depth, - clear.clear_depthmask); - return 0; -} - -int i830_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("i830_swap_bufs\n"); - - if(!_DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock)) { - DRM_ERROR("i830_swap_buf called without lock held\n"); - return -EINVAL; - } - - i830_dma_dispatch_swap( dev ); - return 0; -} - -int i830_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_i830_private_t *dev_priv = (drm_i830_private_t *)dev->dev_private; - u32 *hw_status = (u32 *)dev_priv->hw_status_page; - drm_i830_sarea_t *sarea_priv = (drm_i830_sarea_t *) - dev_priv->sarea_priv; - - sarea_priv->last_dispatch = (int) hw_status[5]; - return 0; -} - -int i830_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_i830_dma_t d; - drm_i830_private_t *dev_priv = (drm_i830_private_t *)dev->dev_private; - u32 *hw_status = (u32 *)dev_priv->hw_status_page; - drm_i830_sarea_t *sarea_priv = (drm_i830_sarea_t *) - dev_priv->sarea_priv; - - DRM_DEBUG("getbuf\n"); - if (copy_from_user(&d, (drm_i830_dma_t *)arg, sizeof(d))) - return -EFAULT; - - if(!_DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock)) { - DRM_ERROR("i830_dma called without lock held\n"); - return -EINVAL; - } - - d.granted = 0; - - retcode = i830_dma_get_buffer(dev, &d, filp); - - DRM_DEBUG("i830_dma: %d returning %d, granted = %d\n", - current->pid, retcode, d.granted); - - if (copy_to_user((drm_dma_t *)arg, &d, sizeof(d))) - return -EFAULT; - sarea_priv->last_dispatch = (int) hw_status[5]; - - return retcode; -} - -int i830_copybuf(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_i830_copy_t d; - drm_i830_private_t *dev_priv = (drm_i830_private_t *)dev->dev_private; - u32 *hw_status = (u32 *)dev_priv->hw_status_page; - drm_i830_sarea_t *sarea_priv = (drm_i830_sarea_t *) - dev_priv->sarea_priv; - drm_buf_t *buf; - drm_i830_buf_priv_t *buf_priv; - drm_device_dma_t *dma = dev->dma; - - if(!_DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock)) { - DRM_ERROR("i830_dma called without lock held\n"); - return -EINVAL; - } - - if (copy_from_user(&d, (drm_i830_copy_t *)arg, sizeof(d))) - return -EFAULT; - - if(d.idx < 0 || d.idx > dma->buf_count) return -EINVAL; - buf = dma->buflist[ d.idx ]; - buf_priv = buf->dev_private; - if (buf_priv->currently_mapped != I830_BUF_MAPPED) return -EPERM; - - if(d.used < 0 || d.used > buf->total) return -EINVAL; - - if (copy_from_user(buf_priv->virtual, d.address, d.used)) - return -EFAULT; - - sarea_priv->last_dispatch = (int) hw_status[5]; - - return 0; -} - -int i830_docopy(struct inode *inode, struct file *filp, unsigned int cmd, - unsigned long arg) -{ - if(VM_DONTCOPY == 0) return 1; - return 0; -} |