From 2150da5d1a57d25d0f4bc39bb6c883d410f586d1 Mon Sep 17 00:00:00 2001 From: Eric Anholt Date: Tue, 10 Jun 2008 15:30:23 -0700 Subject: [gem] Manage the ringbuffer from the kernel in the GEM case. This requires that the X Server use the execbuf interface for buffer submission, as it no longer has direct access to the ring. This is therefore a flag day for the gem interface. This also adds enter/leavevt ioctls for use by the X Server. These would get stubbed out in a modesetting implementation, but are required while in an environment where the device's state is only managed by the DRM while X has the VT. --- shared-core/i915_dma.c | 36 +++++++++++++++++++----------------- shared-core/i915_drm.h | 4 ++++ shared-core/i915_drv.h | 19 +++++++++++++++++-- shared-core/i915_irq.c | 5 +++++ 4 files changed, 45 insertions(+), 19 deletions(-) (limited to 'shared-core') diff --git a/shared-core/i915_dma.c b/shared-core/i915_dma.c index e5c6d0c4..4243b4e9 100644 --- a/shared-core/i915_dma.c +++ b/shared-core/i915_dma.c @@ -255,27 +255,27 @@ static int i915_initialize(struct drm_device * dev, dev_priv->sarea_priv = NULL; } - dev_priv->ring.Start = init->ring_start; - dev_priv->ring.End = init->ring_end; - dev_priv->ring.Size = init->ring_size; - dev_priv->ring.tail_mask = dev_priv->ring.Size - 1; + if (init->ring_size != 0) { + dev_priv->ring.Size = init->ring_size; + dev_priv->ring.tail_mask = dev_priv->ring.Size - 1; - dev_priv->ring.map.offset = init->ring_start; - dev_priv->ring.map.size = init->ring_size; - dev_priv->ring.map.type = 0; - dev_priv->ring.map.flags = 0; - dev_priv->ring.map.mtrr = 0; + dev_priv->ring.map.offset = init->ring_start; + dev_priv->ring.map.size = init->ring_size; + dev_priv->ring.map.type = 0; + dev_priv->ring.map.flags = 0; + dev_priv->ring.map.mtrr = 0; - drm_core_ioremap(&dev_priv->ring.map, dev); + drm_core_ioremap(&dev_priv->ring.map, dev); - if (dev_priv->ring.map.handle == NULL) { - i915_dma_cleanup(dev); - DRM_ERROR("can not ioremap virtual address for" - " ring buffer\n"); - return -ENOMEM; - } + if (dev_priv->ring.map.handle == NULL) { + i915_dma_cleanup(dev); + DRM_ERROR("can not ioremap virtual address for" + " ring buffer\n"); + return -ENOMEM; + } - dev_priv->ring.virtual_start = dev_priv->ring.map.handle; + dev_priv->ring.virtual_start = dev_priv->ring.map.handle; + } dev_priv->cpp = init->cpp; @@ -1188,6 +1188,8 @@ struct drm_ioctl_desc i915_ioctls[] = { DRM_IOCTL_DEF(DRM_I915_GEM_UNPIN, i915_gem_unpin_ioctl, DRM_AUTH|DRM_ROOT_ONLY), DRM_IOCTL_DEF(DRM_I915_GEM_BUSY, i915_gem_busy_ioctl, DRM_AUTH), DRM_IOCTL_DEF(DRM_I915_GEM_THROTTLE, i915_gem_throttle_ioctl, DRM_AUTH), + DRM_IOCTL_DEF(DRM_I915_GEM_ENTERVT, i915_gem_entervt_ioctl, DRM_AUTH), + DRM_IOCTL_DEF(DRM_I915_GEM_LEAVEVT, i915_gem_leavevt_ioctl, DRM_AUTH), }; int i915_max_ioctl = DRM_ARRAY_SIZE(i915_ioctls); diff --git a/shared-core/i915_drm.h b/shared-core/i915_drm.h index 0fa292d0..ce01640a 100644 --- a/shared-core/i915_drm.h +++ b/shared-core/i915_drm.h @@ -182,6 +182,8 @@ typedef struct drm_i915_sarea { #define DRM_I915_GEM_UNPIN 0x16 #define DRM_I915_GEM_BUSY 0x17 #define DRM_I915_GEM_THROTTLE 0x18 +#define DRM_I915_GEM_ENTERVT 0x19 +#define DRM_I915_GEM_LEAVEVT 0x20 #define DRM_IOCTL_I915_INIT DRM_IOW( DRM_COMMAND_BASE + DRM_I915_INIT, drm_i915_init_t) #define DRM_IOCTL_I915_FLUSH DRM_IO ( DRM_COMMAND_BASE + DRM_I915_FLUSH) @@ -207,6 +209,8 @@ typedef struct drm_i915_sarea { #define DRM_IOCTL_I915_GEM_UNPIN DRM_IOW(DRM_COMMAND_BASE + DRM_I915_GEM_UNPIN, struct drm_i915_gem_unpin) #define DRM_IOCTL_I915_GEM_BUSY DRM_IOWR(DRM_COMMAND_BASE + DRM_I915_GEM_BUSY, struct drm_i915_gem_busy) #define DRM_IOCTL_I915_GEM_THROTTLE DRM_IO ( DRM_COMMAND_BASE + DRM_I915_GEM_THROTTLE) +#define DRM_IOCTL_I915_GEM_ENTERVT DRM_IO(DRM_COMMAND_BASE + DRM_I915_GEM_ENTERVT) +#define DRM_IOCTL_I915_GEM_LEAVEVT DRM_IO(DRM_COMMAND_BASE + DRM_I915_GEM_LEAVEVT) /* Asynchronous page flipping: */ diff --git a/shared-core/i915_drv.h b/shared-core/i915_drv.h index 8acef0ca..3a22ae3c 100644 --- a/shared-core/i915_drv.h +++ b/shared-core/i915_drv.h @@ -74,14 +74,13 @@ struct drm_i915_validate_buffer; typedef struct _drm_i915_ring_buffer { int tail_mask; - unsigned long Start; - unsigned long End; unsigned long Size; u8 *virtual_start; int head; int tail; int space; drm_local_map_t map; + struct drm_gem_object *ring_obj; } drm_i915_ring_buffer_t; struct mem_block { @@ -290,6 +289,16 @@ typedef struct drm_i915_private { struct work_struct retire_task; uint32_t next_gem_seqno; + + /** + * Flag if the X Server, and thus DRM, is not currently in + * control of the device. + * + * This is set between LeaveVT and EnterVT. It needs to be + * replaced with a semaphore. It also needs to be + * transitioned away from for kernel modesetting. + */ + int suspended; } mm; struct work_struct user_interrupt_task; @@ -462,8 +471,14 @@ int i915_gem_busy_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv); int i915_gem_throttle_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv); +int i915_gem_entervt_ioctl(struct drm_device *dev, void *data, + struct drm_file *file_priv); +int i915_gem_leavevt_ioctl(struct drm_device *dev, void *data, + struct drm_file *file_priv); int i915_gem_init_object(struct drm_gem_object *obj); void i915_gem_free_object(struct drm_gem_object *obj); +int i915_gem_object_pin(struct drm_gem_object *obj, uint32_t alignment); +void i915_gem_object_unpin(struct drm_gem_object *obj); int i915_gem_set_domain(struct drm_gem_object *obj, struct drm_file *file_priv, uint32_t read_domains, diff --git a/shared-core/i915_irq.c b/shared-core/i915_irq.c index 37d85f40..077af1ab 100644 --- a/shared-core/i915_irq.c +++ b/shared-core/i915_irq.c @@ -575,6 +575,11 @@ int i915_wait_irq(struct drm_device * dev, int irq_nr) drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; int ret = 0; + if (!dev_priv) { + DRM_ERROR("called with no initialization\n"); + return -EINVAL; + } + DRM_DEBUG("irq_nr=%d breadcrumb=%d\n", irq_nr, READ_BREADCRUMB(dev_priv)); -- cgit v1.2.3