From 0c76be35194563f56e02fc1775d0fe29281e84d4 Mon Sep 17 00:00:00 2001 From: Dave Airlie Date: Sun, 30 Mar 2008 07:51:49 +1000 Subject: drm/r300: fix bug in r300 userspace hardware wait emission This interface was originally designed wrong, confusing bit-fields and integers, major brown paper bag going back many years... But userspace only ever used 4 values so fix the interface for new users and fix the implementation to deal with the 4 values userspace has ever emitted (0x1, 0x2, 0x3, 0x6). Signed-off-by: Dave Airlie --- drivers/char/drm/r300_cmdbuf.c | 54 ++++++++++++++++++++++++++++++++---------- drivers/char/drm/radeon_drm.h | 12 ++++++++++ 2 files changed, 54 insertions(+), 12 deletions(-) diff --git a/drivers/char/drm/r300_cmdbuf.c b/drivers/char/drm/r300_cmdbuf.c index 0f4afc44245..f535812e405 100644 --- a/drivers/char/drm/r300_cmdbuf.c +++ b/drivers/char/drm/r300_cmdbuf.c @@ -729,6 +729,47 @@ static void r300_discard_buffer(struct drm_device * dev, struct drm_buf * buf) buf->used = 0; } +static void r300_cmd_wait(drm_radeon_private_t * dev_priv, + drm_r300_cmd_header_t header) +{ + u32 wait_until; + RING_LOCALS; + + if (!header.wait.flags) + return; + + wait_until = 0; + + switch(header.wait.flags) { + case R300_WAIT_2D: + wait_until = RADEON_WAIT_2D_IDLE; + break; + case R300_WAIT_3D: + wait_until = RADEON_WAIT_3D_IDLE; + break; + case R300_NEW_WAIT_2D_3D: + wait_until = RADEON_WAIT_2D_IDLE|RADEON_WAIT_3D_IDLE; + break; + case R300_NEW_WAIT_2D_2D_CLEAN: + wait_until = RADEON_WAIT_2D_IDLE|RADEON_WAIT_2D_IDLECLEAN; + break; + case R300_NEW_WAIT_3D_3D_CLEAN: + wait_until = RADEON_WAIT_3D_IDLE|RADEON_WAIT_3D_IDLECLEAN; + break; + case R300_NEW_WAIT_2D_2D_CLEAN_3D_3D_CLEAN: + wait_until = RADEON_WAIT_2D_IDLE|RADEON_WAIT_2D_IDLECLEAN; + wait_until |= RADEON_WAIT_3D_IDLE|RADEON_WAIT_3D_IDLECLEAN; + break; + default: + return; + } + + BEGIN_RING(2); + OUT_RING(CP_PACKET0(RADEON_WAIT_UNTIL, 0)); + OUT_RING(wait_until); + ADVANCE_RING(); +} + static int r300_scratch(drm_radeon_private_t *dev_priv, drm_radeon_kcmd_buffer_t *cmdbuf, drm_r300_cmd_header_t header) @@ -909,19 +950,8 @@ int r300_do_cp_cmdbuf(struct drm_device *dev, break; case R300_CMD_WAIT: - /* simple enough, we can do it here */ DRM_DEBUG("R300_CMD_WAIT\n"); - if (header.wait.flags == 0) - break; /* nothing to do */ - - { - RING_LOCALS; - - BEGIN_RING(2); - OUT_RING(CP_PACKET0(RADEON_WAIT_UNTIL, 0)); - OUT_RING((header.wait.flags & 0xf) << 14); - ADVANCE_RING(); - } + r300_cmd_wait(dev_priv, header); break; case R300_CMD_SCRATCH: diff --git a/drivers/char/drm/radeon_drm.h b/drivers/char/drm/radeon_drm.h index 71e5b21fad2..aab82e121e0 100644 --- a/drivers/char/drm/radeon_drm.h +++ b/drivers/char/drm/radeon_drm.h @@ -225,8 +225,20 @@ typedef union { #define R300_CMD_WAIT 7 # define R300_WAIT_2D 0x1 # define R300_WAIT_3D 0x2 +/* these two defines are DOING IT WRONG - however + * we have userspace which relies on using these. + * The wait interface is backwards compat new + * code should use the NEW_WAIT defines below + * THESE ARE NOT BIT FIELDS + */ # define R300_WAIT_2D_CLEAN 0x3 # define R300_WAIT_3D_CLEAN 0x4 + +# define R300_NEW_WAIT_2D_3D 0x3 +# define R300_NEW_WAIT_2D_2D_CLEAN 0x4 +# define R300_NEW_WAIT_3D_3D_CLEAN 0x6 +# define R300_NEW_WAIT_2D_2D_CLEAN_3D_3D_CLEAN 0x8 + #define R300_CMD_SCRATCH 8 typedef union { -- cgit v1.2.3 From 144a75fa1faa4a81530bded2e59872ef80d496b6 Mon Sep 17 00:00:00 2001 From: Dave Airlie Date: Sun, 30 Mar 2008 07:53:58 +1000 Subject: drm/i915: fix oops on agp=off From Kernel BZ 10289 - not sure why anyone would boot an intel with no agp but it shouldn't crash. Signed-off-by: Dave Airlie --- drivers/char/drm/i915_dma.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/char/drm/i915_dma.c b/drivers/char/drm/i915_dma.c index e9d6663bec7..a043bb12301 100644 --- a/drivers/char/drm/i915_dma.c +++ b/drivers/char/drm/i915_dma.c @@ -804,6 +804,9 @@ void i915_driver_lastclose(struct drm_device * dev) { drm_i915_private_t *dev_priv = dev->dev_private; + if (!dev_priv) + return; + if (dev_priv->agp_heap) i915_mem_takedown(&(dev_priv->agp_heap)); -- cgit v1.2.3 From 2b46278b6af0a4df43016f01a0741d8e0a76bfd4 Mon Sep 17 00:00:00 2001 From: Harvey Harrison Date: Fri, 28 Mar 2008 14:23:06 -0700 Subject: drm: radeon: fix sparse integer as NULL pointer warnings in radeon_mem.c drivers/char/drm/radeon_mem.c:91:23: warning: Using plain integer as NULL pointer drivers/char/drm/radeon_mem.c:116:28: warning: Using plain integer as NULL pointer drivers/char/drm/radeon_mem.c:124:28: warning: Using plain integer as NULL pointer drivers/char/drm/radeon_mem.c:177:26: warning: Using plain integer as NULL pointer drivers/char/drm/radeon_mem.c:177:53: warning: Using plain integer as NULL pointer Signed-off-by: Harvey Harrison Signed-off-by: Andrew Morton Signed-off-by: Dave Airlie --- drivers/char/drm/radeon_mem.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/char/drm/radeon_mem.c b/drivers/char/drm/radeon_mem.c index 78b34fa7c89..4af5286a36f 100644 --- a/drivers/char/drm/radeon_mem.c +++ b/drivers/char/drm/radeon_mem.c @@ -88,7 +88,7 @@ static struct mem_block *alloc_block(struct mem_block *heap, int size, list_for_each(p, heap) { int start = (p->start + mask) & ~mask; - if (p->file_priv == 0 && start + size <= p->start + p->size) + if (p->file_priv == NULL && start + size <= p->start + p->size) return split_block(p, start, size, file_priv); } @@ -113,7 +113,7 @@ static void free_block(struct mem_block *p) /* Assumes a single contiguous range. Needs a special file_priv in * 'heap' to stop it being subsumed. */ - if (p->next->file_priv == 0) { + if (p->next->file_priv == NULL) { struct mem_block *q = p->next; p->size += q->size; p->next = q->next; @@ -121,7 +121,7 @@ static void free_block(struct mem_block *p) drm_free(q, sizeof(*q), DRM_MEM_BUFS); } - if (p->prev->file_priv == 0) { + if (p->prev->file_priv == NULL) { struct mem_block *q = p->prev; q->size += p->size; q->next = p->next; @@ -174,7 +174,7 @@ void radeon_mem_release(struct drm_file *file_priv, struct mem_block *heap) * 'heap' to stop it being subsumed. */ list_for_each(p, heap) { - while (p->file_priv == 0 && p->next->file_priv == 0) { + while (p->file_priv == NULL && p->next->file_priv == NULL) { struct mem_block *q = p->next; p->size += q->size; p->next = q->next; -- cgit v1.2.3 From 6876b3bacaaa4c73fb8752b47c84b2b7fad5422a Mon Sep 17 00:00:00 2001 From: Benjamin Herrenschmidt Date: Fri, 28 Mar 2008 14:23:07 -0700 Subject: drm: fix for non-coherent DMA PowerPC This patch fixes bits of the DRM so to make the radeon DRI work on non-cache coherent PCI DMA variants of the PowerPC processors. It moves the few places that needs change to wrappers to that other architectures with similar issues can easily add their own changes to those wrappers, at least until we have more useful generic kernel API. Signed-off-by: Benjamin Herrenschmidt Cc: "David S. Miller" Cc: "Luck, Tony" Signed-off-by: Andrew Morton Signed-off-by: Dave Airlie --- drivers/char/drm/ati_pcigart.c | 6 ++++++ drivers/char/drm/drm_scatter.c | 11 ++++++++++- drivers/char/drm/drm_vm.c | 20 +++++++++++++++----- 3 files changed, 31 insertions(+), 6 deletions(-) diff --git a/drivers/char/drm/ati_pcigart.c b/drivers/char/drm/ati_pcigart.c index 35d25d821c3..141f4dfa0a1 100644 --- a/drivers/char/drm/ati_pcigart.c +++ b/drivers/char/drm/ati_pcigart.c @@ -168,6 +168,12 @@ int drm_ati_pcigart_init(struct drm_device *dev, struct drm_ati_pcigart_info *ga } } + if (gart_info->gart_table_location == DRM_ATI_GART_MAIN) + dma_sync_single_for_device(&dev->pdev->dev, + bus_address, + max_pages * sizeof(u32), + PCI_DMA_TODEVICE); + ret = 1; #if defined(__i386__) || defined(__x86_64__) diff --git a/drivers/char/drm/drm_scatter.c b/drivers/char/drm/drm_scatter.c index 26d8f675ed5..b2b0f3d4171 100644 --- a/drivers/char/drm/drm_scatter.c +++ b/drivers/char/drm/drm_scatter.c @@ -36,6 +36,15 @@ #define DEBUG_SCATTER 0 +static inline void *drm_vmalloc_dma(unsigned long size) +{ +#if defined(__powerpc__) && defined(CONFIG_NOT_COHERENT_CACHE) + return __vmalloc(size, GFP_KERNEL, PAGE_KERNEL | _PAGE_NO_CACHE); +#else + return vmalloc_32(size); +#endif +} + void drm_sg_cleanup(struct drm_sg_mem * entry) { struct page *page; @@ -104,7 +113,7 @@ int drm_sg_alloc(struct drm_device *dev, struct drm_scatter_gather * request) } memset((void *)entry->busaddr, 0, pages * sizeof(*entry->busaddr)); - entry->virtual = vmalloc_32(pages << PAGE_SHIFT); + entry->virtual = drm_vmalloc_dma(pages << PAGE_SHIFT); if (!entry->virtual) { drm_free(entry->busaddr, entry->pages * sizeof(*entry->busaddr), DRM_MEM_PAGES); diff --git a/drivers/char/drm/drm_vm.c b/drivers/char/drm/drm_vm.c index 3d65c4dcd0c..945df72a51a 100644 --- a/drivers/char/drm/drm_vm.c +++ b/drivers/char/drm/drm_vm.c @@ -54,13 +54,24 @@ static pgprot_t drm_io_prot(uint32_t map_type, struct vm_area_struct *vma) pgprot_val(tmp) |= _PAGE_NO_CACHE; if (map_type == _DRM_REGISTERS) pgprot_val(tmp) |= _PAGE_GUARDED; -#endif -#if defined(__ia64__) +#elif defined(__ia64__) if (efi_range_is_wc(vma->vm_start, vma->vm_end - vma->vm_start)) tmp = pgprot_writecombine(tmp); else tmp = pgprot_noncached(tmp); +#elif defined(__sparc__) + tmp = pgprot_noncached(tmp); +#endif + return tmp; +} + +static pgprot_t drm_dma_prot(uint32_t map_type, struct vm_area_struct *vma) +{ + pgprot_t tmp = vm_get_page_prot(vma->vm_flags); + +#if defined(__powerpc__) && defined(CONFIG_NOT_COHERENT_CACHE) + tmp |= _PAGE_NO_CACHE; #endif return tmp; } @@ -603,9 +614,6 @@ static int drm_mmap_locked(struct file *filp, struct vm_area_struct *vma) offset = dev->driver->get_reg_ofs(dev); vma->vm_flags |= VM_IO; /* not in core dump */ vma->vm_page_prot = drm_io_prot(map->type, vma); -#ifdef __sparc__ - vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); -#endif if (io_remap_pfn_range(vma, vma->vm_start, (map->offset + offset) >> PAGE_SHIFT, vma->vm_end - vma->vm_start, @@ -624,6 +632,7 @@ static int drm_mmap_locked(struct file *filp, struct vm_area_struct *vma) page_to_pfn(virt_to_page(map->handle)), vma->vm_end - vma->vm_start, vma->vm_page_prot)) return -EAGAIN; + vma->vm_page_prot = drm_dma_prot(map->type, vma); /* fall through to _DRM_SHM */ case _DRM_SHM: vma->vm_ops = &drm_vm_shm_ops; @@ -631,6 +640,7 @@ static int drm_mmap_locked(struct file *filp, struct vm_area_struct *vma) /* Don't let this area swap. Change when DRM_KERNEL advisory is supported. */ vma->vm_flags |= VM_RESERVED; + vma->vm_page_prot = drm_dma_prot(map->type, vma); break; case _DRM_SCATTER_GATHER: vma->vm_ops = &drm_vm_sg_ops; -- cgit v1.2.3