From b3eb34e0ea0ec7c550df5fd6b25efcf9e35c53cd Mon Sep 17 00:00:00 2001 From: Alan Hourihane Date: Tue, 25 Mar 2003 11:36:43 +0000 Subject: linux merge for drm --- linux/i810_dma.c | 57 ++++++++++++-------------------------------------------- 1 file changed, 12 insertions(+), 45 deletions(-) (limited to 'linux/i810_dma.c') diff --git a/linux/i810_dma.c b/linux/i810_dma.c index ffb7c708..91c204c5 100644 --- a/linux/i810_dma.c +++ b/linux/i810_dma.c @@ -53,30 +53,10 @@ #define I810_BUF_UNMAPPED 0 #define I810_BUF_MAPPED 1 -#define RING_LOCALS unsigned int outring, ringmask; volatile char *virt; - -#define BEGIN_LP_RING(n) do { \ - if (0) DRM_DEBUG("BEGIN_LP_RING(%d) in %s\n", n, __FUNCTION__); \ - if (dev_priv->ring.space < n*4) \ - i810_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 (0) DRM_DEBUG("ADVANCE_LP_RING\n"); \ - dev_priv->ring.tail = outring; \ - I810_WRITE(LP_RING + RING_TAIL, outring); \ -} while(0) - -#define OUT_RING(n) do { \ - if (0) DRM_DEBUG(" OUT_RING %x\n", (int)(n)); \ - *(volatile unsigned int *)(virt + outring) = n; \ - outring += 4; \ - outring &= ringmask; \ -} while (0) +#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) { @@ -185,11 +165,7 @@ static int i810_map_buffer(drm_buf_t *buf, struct file *filp) if(buf_priv->currently_mapped == I810_BUF_MAPPED) return -EINVAL; -#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 = &i810_buffer_fops; dev_priv->mmap_buffer = buf; @@ -201,15 +177,12 @@ static int i810_map_buffer(drm_buf_t *buf, struct file *filp) filp->f_op = old_fops; if ((unsigned long)buf_priv->virtual > -1024UL) { /* Real error */ - DRM_DEBUG("mmap error\n"); + DRM_ERROR("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 + return retcode; } @@ -220,19 +193,13 @@ static int i810_unmap_buffer(drm_buf_t *buf) if(buf_priv->currently_mapped != I810_BUF_MAPPED) return -EINVAL; -#if LINUX_VERSION_CODE <= 0x020402 - down( ¤t->mm->mmap_sem ); -#else - down_write( ¤t->mm->mmap_sem ); -#endif + + down_write(¤t->mm->mmap_sem); retcode = DO_MUNMAP(current->mm, (unsigned long)buf_priv->virtual, (size_t) buf->total); -#if LINUX_VERSION_CODE <= 0x020402 - up( ¤t->mm->mmap_sem ); -#else - up_write( ¤t->mm->mmap_sem ); -#endif + up_write(¤t->mm->mmap_sem); + buf_priv->currently_mapped = I810_BUF_UNMAPPED; buf_priv->virtual = 0; @@ -257,7 +224,7 @@ static int i810_dma_get_buffer(drm_device_t *dev, drm_i810_dma_t *d, retcode = i810_map_buffer(buf, filp); if(retcode) { i810_freelist_put(dev, buf); - DRM_DEBUG("mapbuf failed, retcode %d\n", retcode); + DRM_ERROR("mapbuf failed, retcode %d\n", retcode); return retcode; } buf->pid = priv->pid; @@ -321,7 +288,7 @@ static int i810_wait_ring(drm_device_t *dev, int n) end = jiffies + (HZ*3); iters++; - if((signed)(end - jiffies) <= 0) { + if(time_before(end, jiffies)) { DRM_ERROR("space: %d wanted %d\n", ring->space, n); DRM_ERROR("lockup\n"); goto out_wait_ring; -- cgit v1.2.3