intel_be_context.c

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/*
 * Authors: Jakob Bornecrantz <jakob-at-tungstengraphics.com>
 */

#include "ws_dri_fencemgr.h"
#include "intel_be_device.h"
#include "intel_be_context.h"
#include "intel_be_batchbuffer.h"

static INLINE struct intel_be_context *
intel_be_context(struct i915_winsys *sws)
{
        return (struct intel_be_context *)sws;
}

/* Simple batchbuffer interface:
 */

static struct i915_batchbuffer*
intel_i915_batch_get(struct i915_winsys *sws)
{
        struct intel_be_context *intel = intel_be_context(sws);
        return &intel->batch->base;
}

static void intel_i915_batch_reloc(struct i915_winsys *sws,
                                   struct pipe_buffer *buf,
                                   unsigned access_flags,
                                   unsigned delta)
{
        struct intel_be_context *intel = intel_be_context(sws);

        unsigned flags = DRM_BO_FLAG_MEM_TT;
        unsigned mask = DRM_BO_MASK_MEM;

        if (access_flags & I915_BUFFER_ACCESS_WRITE) {
                flags |= DRM_BO_FLAG_WRITE;
                mask |= DRM_BO_FLAG_WRITE;
        }

        if (access_flags & I915_BUFFER_ACCESS_READ) {
                flags |= DRM_BO_FLAG_READ;
                mask |= DRM_BO_FLAG_READ;
        }

        intel_be_offset_relocation(intel->batch,
                                delta,
                                dri_bo(buf),
                                flags,
                                mask);
}

static void intel_i915_batch_flush(struct i915_winsys *sws,
                                   struct pipe_fence_handle **fence)
{
        struct intel_be_context *intel = intel_be_context(sws);

        union {
                struct _DriFenceObject *dri;
                struct pipe_fence_handle *pipe;
        } fu;

        if (fence)
                assert(!*fence);

        fu.dri = intel_be_batchbuffer_flush(intel->batch);

        if (!fu.dri) {
                assert(0);
                *fence = NULL;
                return;
        }

        if (fu.dri) {
                if (fence)
                        *fence = fu.pipe;
                else
                        driFenceUnReference(&fu.dri);
        }

}

boolean
intel_be_init_context(struct intel_be_context *intel, struct intel_be_device *device)
{
        assert(intel);
        assert(device);

        intel->device = device;

        /* TODO move framebuffer createion to the driver */

        intel->base.batch_get = intel_i915_batch_get;
        intel->base.batch_reloc = intel_i915_batch_reloc;
        intel->base.batch_flush = intel_i915_batch_flush;

        intel->batch = intel_be_batchbuffer_alloc(intel);

        return true;
}

void
intel_be_destroy_context(struct intel_be_context *intel)
{
        intel_be_batchbuffer_free(intel->batch);
}

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