Add dry-coded DRM drawable private information storage for FreeBSD.

With this, all modules build again.

6 files changed, 199 insertions, 13 deletions

diff --git a/bsd-core/drmP.h b/bsd-core/drmP.h
index b2ecd4d4..fd8f4a27 100644
--- a/bsd-core/drmP.h
+++ b/bsd-core/drmP.h
@@ -59,6 +59,8 @@ typedef struct drm_file drm_file_t;
 #include <sys/bus.h>
 #include <sys/signalvar.h>
 #include <sys/poll.h>
+#include <sys/tree.h>
+#include <sys/taskqueue.h>
 #include <vm/vm.h>
 #include <vm/pmap.h>
 #include <vm/vm_extern.h>
@@ -152,6 +154,7 @@ typedef struct drm_file drm_file_t;
 #define DRM_MEM_CTXBITMAP 17
 #define DRM_MEM_STUB	  18
 #define DRM_MEM_SGLISTS	  19
+#define DRM_MEM_DRAWABLE  20
 
 #define DRM_MAX_CTXBITMAP (PAGE_SIZE * 8)
 
@@ -184,10 +187,15 @@ MALLOC_DECLARE(M_DRM);
 #define DRM_CURPROC		curthread
 #define DRM_STRUCTPROC		struct thread
 #define DRM_SPINTYPE		struct mtx
-#define DRM_SPININIT(l,name)	mtx_init(&l, name, NULL, MTX_DEF)
-#define DRM_SPINUNINIT(l)	mtx_destroy(&l)
+#define DRM_SPININIT(l,name)	mtx_init(l, name, NULL, MTX_DEF)
+#define DRM_SPINUNINIT(l)	mtx_destroy(l)
 #define DRM_SPINLOCK(l)		mtx_lock(l)
-#define DRM_SPINUNLOCK(u)	mtx_unlock(u);
+#define DRM_SPINUNLOCK(u)	mtx_unlock(u)
+#define DRM_SPINLOCK_IRQSAVE(l, irqflags) do {		\
+	mtx_lock(l);					\
+	(void)irqflags;					\
+} while (0)
+#define DRM_SPINUNLOCK_IRQRESTORE(u, irqflags) mtx_unlock(u)
 #define DRM_SPINLOCK_ASSERT(l)	mtx_assert(l, MA_OWNED)
 #define DRM_CURRENTPID		curthread->td_proc->p_pid
 #define DRM_LOCK()		mtx_lock(&dev->dev_lock)
@@ -732,6 +740,8 @@ struct drm_device {
 	struct mtx	  irq_lock;	/* protects irq condition checks */
 	struct mtx	  dev_lock;	/* protects everything else */
 #endif
+	DRM_SPINTYPE	  drw_lock;
+
 				/* Usage Counters */
 	int		  open_count;	/* Outstanding files open	   */
 	int		  buf_use;	/* Buffers in use -- cannot alloc  */
@@ -797,6 +807,13 @@ struct drm_device {
 	void		  *dev_private;
 	unsigned int	  agp_buffer_token;
 	drm_local_map_t   *agp_buffer_map;
+
+	struct unrhdr	  *drw_unrhdr;
+	/* RB tree of drawable infos */
+	RB_HEAD(drawable_tree, bsd_drm_drawable_info) drw_head;
+
+	struct task	  locked_task;
+	void		  (*locked_task_call)(drm_device_t *dev);
 };
 
 extern int	drm_debug_flag;
@@ -959,6 +976,8 @@ int	drm_getsareactx(DRM_IOCTL_ARGS);
 /* Drawable IOCTL support (drm_drawable.c) */
 int	drm_adddraw(DRM_IOCTL_ARGS);
 int	drm_rmdraw(DRM_IOCTL_ARGS);
+int	drm_update_draw(DRM_IOCTL_ARGS);
+struct drm_drawable_info *drm_get_drawable_info(drm_device_t *dev, int handle);
 
 /* Authentication IOCTL support (drm_auth.c) */
 int	drm_getmagic(DRM_IOCTL_ARGS);
diff --git a/bsd-core/drm_dma.c b/bsd-core/drm_dma.c
index 67b3fe2d..086a9fa2 100644
--- a/bsd-core/drm_dma.c
+++ b/bsd-core/drm_dma.c
@@ -40,7 +40,7 @@ int drm_dma_setup(drm_device_t *dev)
 	if (dev->dma == NULL)
 		return DRM_ERR(ENOMEM);
 
-	DRM_SPININIT(dev->dma_lock, "drmdma");
+	DRM_SPININIT(&dev->dma_lock, "drmdma");
 
 	return 0;
 }
@@ -80,7 +80,7 @@ void drm_dma_takedown(drm_device_t *dev)
 	free(dma->pagelist, M_DRM);
 	free(dev->dma, M_DRM);
 	dev->dma = NULL;
-	DRM_SPINUNINIT(dev->dma_lock);
+	DRM_SPINUNINIT(&dev->dma_lock);
 }
 
 
diff --git a/bsd-core/drm_drawable.c b/bsd-core/drm_drawable.c
index 379e0aa7..bc3ad571 100644
--- a/bsd-core/drm_drawable.c
+++ b/bsd-core/drm_drawable.c
@@ -33,19 +33,130 @@
 
 #include "drmP.h"
 
+struct bsd_drm_drawable_info {
+	struct drm_drawable_info info;
+	int handle;
+	RB_ENTRY(bsd_drm_drawable_info) tree;
+};
+
+static int
+drm_drawable_compare(struct bsd_drm_drawable_info *a,
+    struct bsd_drm_drawable_info *b)
+{
+	if (a->handle > b->handle)
+		return 1;
+	if (a->handle > b->handle)
+		return -1;
+	return 0;
+}
+
+RB_GENERATE_STATIC(drawable_tree, bsd_drm_drawable_info, tree,
+    drm_drawable_compare);
+
+struct drm_drawable_info *
+drm_get_drawable_info(drm_device_t *dev, int handle)
+{
+	struct bsd_drm_drawable_info find, *result;
+
+	find.handle = handle;
+	result = RB_FIND(drawable_tree, &dev->drw_head, &find);
+
+	return &result->info;
+}
+
+static struct drm_drawable_info *
+drm_drawable_info_alloc(drm_device_t *dev, int handle)
+{
+	struct bsd_drm_drawable_info *info;
+
+	info = drm_calloc(1, sizeof(struct bsd_drm_drawable_info),
+	    DRM_MEM_DRAWABLE);
+	if (info == NULL)
+		return NULL;
+
+	info->handle = handle;
+	RB_INSERT(drawable_tree, &dev->drw_head, info);
+
+	return &info->info;
+}
+
+static void
+drm_drawable_info_free(drm_device_t *dev, struct drm_drawable_info *info)
+{
+	RB_REMOVE(drawable_tree, &dev->drw_head,
+	    (struct bsd_drm_drawable_info *)info);
+	drm_free(info, sizeof(struct bsd_drm_drawable_info), DRM_MEM_DRAWABLE);
+}
+
 int drm_adddraw(DRM_IOCTL_ARGS)
 {
+	DRM_DEVICE;
 	drm_draw_t draw;
 
-	draw.handle = 0;	/* NOOP */
+	draw.handle = alloc_unr(dev->drw_unrhdr);
 	DRM_DEBUG("%d\n", draw.handle);
-	
-	DRM_COPY_TO_USER_IOCTL( (drm_draw_t *)data, draw, sizeof(draw) );
+
+	DRM_COPY_TO_USER_IOCTL((drm_draw_t *)data, draw, sizeof(draw));
 
 	return 0;
 }
 
 int drm_rmdraw(DRM_IOCTL_ARGS)
 {
-	return 0;		/* NOOP */
+	DRM_DEVICE;
+	drm_draw_t *draw = (drm_draw_t *)data;
+	struct drm_drawable_info *info;
+
+	free_unr(dev->drw_unrhdr, draw->handle);
+
+	info = drm_get_drawable_info(dev, draw->handle);
+	if (info != NULL) {
+		drm_drawable_info_free(dev, info);
+	}
+
+	return 0;
+}
+
+int drm_update_draw(DRM_IOCTL_ARGS)
+{
+	DRM_DEVICE;
+	struct drm_drawable_info *info;
+	struct drm_update_draw *update = (struct drm_update_draw *)data;
+
+	info = drm_get_drawable_info(dev, update->handle);
+	if (info == NULL) {
+		info = drm_drawable_info_alloc(dev, update->handle);
+		if (info == NULL)
+			return ENOMEM;
+	}
+
+	switch (update->type) {
+	case DRM_DRAWABLE_CLIPRECTS:
+		DRM_SPINLOCK(&dev->drw_lock);
+		if (update->num != info->num_rects) {
+			drm_free(info->rects,
+			    sizeof(*info->rects) * info->num_rects,
+			    DRM_MEM_DRAWABLE);
+			info->rects = NULL;
+			info->num_rects = 0;
+		}
+		if (update->num == 0) {
+			DRM_SPINUNLOCK(&dev->drw_lock);
+			return 0;
+		}
+		if (info->rects == NULL) {
+			info->rects = drm_alloc(sizeof(*info->rects) *
+			    update->num, DRM_MEM_DRAWABLE);
+			if (info->rects == NULL)
+				return ENOMEM;
+			info->num_rects = update->num;
+		}
+		/* For some reason the pointer arg is unsigned long long. */
+		copyin((void *)(intptr_t)update->data, info->rects,
+		    sizeof(*info->rects) * info->num_rects);
+		DRM_SPINUNLOCK(&dev->drw_lock);
+		return 0;
+	default:
+		return EINVAL;
+	}
 }
diff --git a/bsd-core/drm_drv.c b/bsd-core/drm_drv.c
index 069774c1..4be4cd30 100644
--- a/bsd-core/drm_drv.c
+++ b/bsd-core/drm_drv.c
@@ -31,6 +31,7 @@
  *
  */
 
+#include <sys/limits.h>
 #include "drmP.h"
 #include "drm.h"
 #include "drm_sarea.h"
@@ -121,6 +122,7 @@ static drm_ioctl_desc_t		  drm_ioctls[256] = {
 	[DRM_IOCTL_NR(DRM_IOCTL_SG_FREE)]       = { drm_sg_free,     DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY },
 
 	[DRM_IOCTL_NR(DRM_IOCTL_WAIT_VBLANK)]   = { drm_wait_vblank, 0 },
+	[DRM_IOCTL_NR(DRM_IOCTL_UPDATE_DRAW)]   = { drm_update_draw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY },
 };
 
 #ifdef __FreeBSD__
@@ -556,7 +558,13 @@ static int drm_load(drm_device_t *dev)
 		DRM_ERROR("Cannot allocate memory for context bitmap.\n");
 		goto error;
 	}
-	
+
+	dev->drw_unrhdr = new_unrhdr(1, INT_MAX, NULL);
+	if (dev->drw_unrhdr == NULL) {
+		DRM_ERROR("Couldn't allocate drawable number allocator\n");
+		goto error;
+	}
+
 	DRM_INFO("Initialized %s %d.%d.%d %s\n",
 	  	dev->driver.name,
 	  	dev->driver.major,
@@ -628,6 +636,8 @@ static void drm_unload(drm_device_t *dev)
 	if (dev->driver.unload != NULL)
 		dev->driver.unload(dev);
 
+	delete_unrhdr(dev->drw_unrhdr);
+
 	drm_mem_uninit();
 #if defined(__FreeBSD__) &&  __FreeBSD_version >= 500000
 	mtx_destroy(&dev->dev_lock);
diff --git a/bsd-core/drm_irq.c b/bsd-core/drm_irq.c
index f7da5ed7..2a69e014 100644
--- a/bsd-core/drm_irq.c
+++ b/bsd-core/drm_irq.c
@@ -31,6 +31,8 @@
 #include "drmP.h"
 #include "drm.h"
 
+static void drm_locked_task(void *context, int pending __unused);
+
 int drm_irq_by_busid(DRM_IOCTL_ARGS)
 {
 	DRM_DEVICE;
@@ -87,7 +89,7 @@ int drm_irq_install(drm_device_t *dev)
 
 	dev->context_flag = 0;
 
-	DRM_SPININIT(dev->irq_lock, "DRM IRQ lock");
+	DRM_SPININIT(&dev->irq_lock, "DRM IRQ lock");
 
 				/* Before installing handler */
 	dev->driver.irq_preinstall(dev);
@@ -131,6 +133,7 @@ int drm_irq_install(drm_device_t *dev)
 	dev->driver.irq_postinstall(dev);
 	DRM_UNLOCK();
 
+	TASK_INIT(&dev->locked_task, 0, drm_locked_task, dev);
 	return 0;
 err:
 	DRM_LOCK();
@@ -142,7 +145,7 @@ err:
 		dev->irqrid = 0;
 	}
 #endif
-	DRM_SPINUNINIT(dev->irq_lock);
+	DRM_SPINUNINIT(&dev->irq_lock);
 	DRM_UNLOCK();
 	return retcode;
 }
@@ -174,7 +177,7 @@ int drm_irq_uninstall(drm_device_t *dev)
 #elif defined(__NetBSD__) || defined(__OpenBSD__)
 	pci_intr_disestablish(&dev->pa.pa_pc, dev->irqh);
 #endif
-	DRM_SPINUNINIT(dev->irq_lock);
+	DRM_SPINUNINIT(&dev->irq_lock);
 
 	return 0;
 }
@@ -291,3 +294,45 @@ void drm_vbl_send_signals( drm_device_t *dev )
 	}
 }
 #endif
+
+static void drm_locked_task(void *context, int pending __unused)
+{
+	drm_device_t *dev = context;
+
+	DRM_LOCK();
+	for (;;) {
+		int ret;
+
+		if (drm_lock_take(&dev->lock.hw_lock->lock,
+		    DRM_KERNEL_CONTEXT))
+		{
+			dev->lock.filp = (void *)(uintptr_t)DRM_CURRENTPID;
+			dev->lock.lock_time = jiffies;
+			atomic_inc(&dev->counts[_DRM_STAT_LOCKS]);
+			break;  /* Got lock */
+		}
+
+		/* Contention */
+#if defined(__FreeBSD__) && __FreeBSD_version > 500000
+		ret = msleep((void *)&dev->lock.lock_queue, &dev->dev_lock,
+		    PZERO | PCATCH, "drmlk2", 0);
+#else
+		ret = tsleep((void *)&dev->lock.lock_queue, PZERO | PCATCH,
+		    "drmlk2", 0);
+#endif
+		if (ret != 0)
+			return;
+	}
+	DRM_UNLOCK();
+
+	dev->locked_task_call(dev);
+
+	drm_lock_free(dev, &dev->lock.hw_lock->lock, DRM_KERNEL_CONTEXT);
+}
+
+void
+drm_locked_tasklet(drm_device_t *dev, void (*tasklet)(drm_device_t *dev))
+{
+	dev->locked_task_call = tasklet;
+	taskqueue_enqueue(taskqueue_swi, &dev->locked_task);
+}
diff --git a/bsd-core/drm_scatter.c b/bsd-core/drm_scatter.c
index 99eae408..3c0be4a0 100644
--- a/bsd-core/drm_scatter.c
+++ b/bsd-core/drm_scatter.c
@@ -90,6 +90,7 @@ int drm_sg_alloc(drm_device_t * dev, drm_scatter_gather_t * request)
 	dev->sg = entry;
 	DRM_UNLOCK();
 
+	return 0;
 }
 
 int drm_sg_alloc_ioctl(DRM_IOCTL_ARGS)