Merge branch 'drm-patches' of ssh://master.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6 (a5fcaa21) · Commits · e / devices / android_kernel_xiaomi_markw

drivers/char/drm/drmP.h

+5 −6

Original line number	Diff line number	Diff line
		@@ -75,6 +75,8 @@
		#include <asm/pgalloc.h>
		#include "drm.h"

		#include <linux/idr.h>

		#define __OS_HAS_AGP (defined(CONFIG_AGP) \|\| (defined(CONFIG_AGP_MODULE) && defined(MODULE)))
		#define __OS_HAS_MTRR (defined(CONFIG_MTRR))

		@@ -676,8 +678,7 @@ struct drm_device {
		int ctx_count; /*< Number of context handles /
		struct mutex ctxlist_mutex; /*< For ctxlist /

		struct drm_map context_sareas; /< per-context SAREA's */
		int max_context;
		struct idr ctx_idr;

		struct list_head vmalist; /*< List of vmas (for debugging) /
		struct drm_lock_data lock; /*< Information on hardware lock /
		@@ -750,10 +751,7 @@ struct drm_device {
		/** \name Drawable information */
		/@{ /
		spinlock_t drw_lock;
		unsigned int drw_bitfield_length;
		u32 *drw_bitfield;
		unsigned int drw_info_length;
		struct drm_drawable_info **drw_info;
		struct idr drw_idr;
		/@} /
		};

		@@ -903,6 +901,7 @@ extern int drm_update_drawable_info(struct inode inode, struct file filp,
		unsigned int cmd, unsigned long arg);
		extern struct drm_drawable_info drm_get_drawable_info(struct drm_device dev,
		drm_drawable_t id);
		extern void drm_drawable_free_all(struct drm_device *dev);

		/* Authentication IOCTL support (drm_auth.h) */
		extern int drm_getmagic(struct inode inode, struct file filp,

drivers/char/drm/drm_context.c

+30 −101

Original line number	Diff line number	Diff line
		@@ -53,26 +53,14 @@
		* \param ctx_handle context handle.
		*
		* Clears the bit specified by \p ctx_handle in drm_device::ctx_bitmap and the entry
		* in drm_device::context_sareas, while holding the drm_device::struct_mutex
		* in drm_device::ctx_idr, while holding the drm_device::struct_mutex
		* lock.
		*/
		void drm_ctxbitmap_free(struct drm_device * dev, int ctx_handle)
		{
		if (ctx_handle < 0)
		goto failed;
		if (!dev->ctx_bitmap)
		goto failed;

		if (ctx_handle < DRM_MAX_CTXBITMAP) {
		mutex_lock(&dev->struct_mutex);
		clear_bit(ctx_handle, dev->ctx_bitmap);
		dev->context_sareas[ctx_handle] = NULL;
		idr_remove(&dev->ctx_idr, ctx_handle);
		mutex_unlock(&dev->struct_mutex);
		return;
		}
		failed:
		DRM_ERROR("Attempt to free invalid context handle: %d\n", ctx_handle);
		return;
		}

		/**
		@@ -81,62 +69,28 @@ void drm_ctxbitmap_free(struct drm_device * dev, int ctx_handle)
		* \param dev DRM device.
		* \return (non-negative) context handle on success or a negative number on failure.
		*
		* Find the first zero bit in drm_device::ctx_bitmap and (re)allocates
		* drm_device::context_sareas to accommodate the new entry while holding the
		* Allocate a new idr from drm_device::ctx_idr while holding the
		* drm_device::struct_mutex lock.
		*/
		static int drm_ctxbitmap_next(struct drm_device * dev)
		{
		int bit;
		int new_id;
		int ret;

		if (!dev->ctx_bitmap)
		return -1;

		mutex_lock(&dev->struct_mutex);
		bit = find_first_zero_bit(dev->ctx_bitmap, DRM_MAX_CTXBITMAP);
		if (bit < DRM_MAX_CTXBITMAP) {
		set_bit(bit, dev->ctx_bitmap);
		DRM_DEBUG("drm_ctxbitmap_next bit : %d\n", bit);
		if ((bit + 1) > dev->max_context) {
		dev->max_context = (bit + 1);
		if (dev->context_sareas) {
		struct drm_map **ctx_sareas;

		ctx_sareas = drm_realloc(dev->context_sareas,
		(dev->max_context -
		1) *
		sizeof(*dev->
		context_sareas),
		dev->max_context *
		sizeof(*dev->
		context_sareas),
		DRM_MEM_MAPS);
		if (!ctx_sareas) {
		clear_bit(bit, dev->ctx_bitmap);
		mutex_unlock(&dev->struct_mutex);
		return -1;
		}
		dev->context_sareas = ctx_sareas;
		dev->context_sareas[bit] = NULL;
		} else {
		/* max_context == 1 at this point */
		dev->context_sareas =
		drm_alloc(dev->max_context *
		sizeof(*dev->context_sareas),
		DRM_MEM_MAPS);
		if (!dev->context_sareas) {
		clear_bit(bit, dev->ctx_bitmap);
		mutex_unlock(&dev->struct_mutex);
		return -1;
		}
		dev->context_sareas[bit] = NULL;
		}
		again:
		if (idr_pre_get(&dev->ctx_idr, GFP_KERNEL) == 0) {
		DRM_ERROR("Out of memory expanding drawable idr\n");
		return -ENOMEM;
		}
		mutex_lock(&dev->struct_mutex);
		ret = idr_get_new_above(&dev->ctx_idr, NULL,
		DRM_RESERVED_CONTEXTS, &new_id);
		if (ret == -EAGAIN) {
		mutex_unlock(&dev->struct_mutex);
		return bit;
		goto again;
		}
		mutex_unlock(&dev->struct_mutex);
		return -1;
		return new_id;
		}

		/**
		@@ -144,31 +98,11 @@ static int drm_ctxbitmap_next(struct drm_device * dev)
		*
		* \param dev DRM device.
		*
		* Allocates and initialize drm_device::ctx_bitmap and drm_device::context_sareas, while holding
		* the drm_device::struct_mutex lock.
		* Initialise the drm_device::ctx_idr
		*/
		int drm_ctxbitmap_init(struct drm_device * dev)
		{
		int i;
		int temp;

		mutex_lock(&dev->struct_mutex);
		dev->ctx_bitmap = (unsigned long *)drm_alloc(PAGE_SIZE,
		DRM_MEM_CTXBITMAP);
		if (dev->ctx_bitmap == NULL) {
		mutex_unlock(&dev->struct_mutex);
		return -ENOMEM;
		}
		memset((void *)dev->ctx_bitmap, 0, PAGE_SIZE);
		dev->context_sareas = NULL;
		dev->max_context = -1;
		mutex_unlock(&dev->struct_mutex);

		for (i = 0; i < DRM_RESERVED_CONTEXTS; i++) {
		temp = drm_ctxbitmap_next(dev);
		DRM_DEBUG("drm_ctxbitmap_init : %d\n", temp);
		}

		idr_init(&dev->ctx_idr);
		return 0;
		}

		@@ -177,17 +111,13 @@ int drm_ctxbitmap_init(struct drm_device * dev)
		*
		* \param dev DRM device.
		*
		* Frees drm_device::ctx_bitmap and drm_device::context_sareas, while holding
		* the drm_device::struct_mutex lock.
		* Free all idr members using drm_ctx_sarea_free helper function
		* while holding the drm_device::struct_mutex lock.
		*/
		void drm_ctxbitmap_cleanup(struct drm_device * dev)
		{
		mutex_lock(&dev->struct_mutex);
		if (dev->context_sareas)
		drm_free(dev->context_sareas,
		sizeof(dev->context_sareas)
		dev->max_context, DRM_MEM_MAPS);
		drm_free((void *)dev->ctx_bitmap, PAGE_SIZE, DRM_MEM_CTXBITMAP);
		idr_remove_all(&dev->ctx_idr);
		mutex_unlock(&dev->struct_mutex);
		}

		@@ -206,7 +136,7 @@ void drm_ctxbitmap_cleanup(struct drm_device * dev)
		* \param arg user argument pointing to a drm_ctx_priv_map structure.
		* \return zero on success or a negative number on failure.
		*
		* Gets the map from drm_device::context_sareas with the handle specified and
		* Gets the map from drm_device::ctx_idr with the handle specified and
		* returns its handle.
		*/
		int drm_getsareactx(struct inode inode, struct file filp,
		@@ -223,13 +153,13 @@ int drm_getsareactx(struct inode inode, struct file filp,
		return -EFAULT;

		mutex_lock(&dev->struct_mutex);
		if (dev->max_context < 0
		\|\| request.ctx_id >= (unsigned)dev->max_context) {

		map = idr_find(&dev->ctx_idr, request.ctx_id);
		if (!map) {
		mutex_unlock(&dev->struct_mutex);
		return -EINVAL;
		}

		map = dev->context_sareas[request.ctx_id];
		mutex_unlock(&dev->struct_mutex);

		request.handle = NULL;
		@@ -258,7 +188,7 @@ int drm_getsareactx(struct inode inode, struct file filp,
		* \return zero on success or a negative number on failure.
		*
		* Searches the mapping specified in \p arg and update the entry in
		* drm_device::context_sareas with it.
		* drm_device::ctx_idr with it.
		*/
		int drm_setsareactx(struct inode inode, struct file filp,
		unsigned int cmd, unsigned long arg)
		@@ -288,11 +218,10 @@ int drm_setsareactx(struct inode inode, struct file filp,
		map = r_list->map;
		if (!map)
		goto bad;
		if (dev->max_context < 0)
		goto bad;
		if (request.ctx_id >= (unsigned)dev->max_context)

		if (IS_ERR(idr_replace(&dev->ctx_idr, map, request.ctx_id)))
		goto bad;
		dev->context_sareas[request.ctx_id] = map;

		mutex_unlock(&dev->struct_mutex);
		return 0;
		}

drivers/char/drm/drm_drawable.c

+55 −193

Original line number	Diff line number	Diff line
		@@ -44,82 +44,29 @@ int drm_adddraw(DRM_IOCTL_ARGS)
		{
		DRM_DEVICE;
		unsigned long irqflags;
		int i, j;
		u32 *bitfield = dev->drw_bitfield;
		unsigned int bitfield_length = dev->drw_bitfield_length;
		struct drm_drawable_info **info = dev->drw_info;
		unsigned int info_length = dev->drw_info_length;
		struct drm_draw draw;
		int new_id = 0;
		int ret;

		for (i = 0, j = 0; i < bitfield_length; i++) {
		if (bitfield[i] == ~0)
		continue;

		for (; j < 8 * sizeof(*bitfield); j++)
		if (!(bitfield[i] & (1 << j)))
		goto done;
		again:
		if (idr_pre_get(&dev->drw_idr, GFP_KERNEL) == 0) {
		DRM_ERROR("Out of memory expanding drawable idr\n");
		return -ENOMEM;
		}
		done:

		if (i == bitfield_length) {
		bitfield_length++;

		bitfield = drm_alloc(bitfield_length * sizeof(*bitfield),
		DRM_MEM_BUFS);

		if (!bitfield) {
		DRM_ERROR("Failed to allocate new drawable bitfield\n");
		return DRM_ERR(ENOMEM);
		spin_lock_irqsave(&dev->drw_lock, irqflags);
		ret = idr_get_new_above(&dev->drw_idr, NULL, 1, &new_id);
		if (ret == -EAGAIN) {
		spin_unlock_irqrestore(&dev->drw_lock, irqflags);
		goto again;
		}

		if (8 * sizeof(bitfield) bitfield_length > info_length) {
		info_length += 8 * sizeof(*bitfield);

		info = drm_alloc(info_length * sizeof(*info),
		DRM_MEM_BUFS);

		if (!info) {
		DRM_ERROR("Failed to allocate new drawable info"
		" array\n");

		drm_free(bitfield,
		bitfield_length * sizeof(*bitfield),
		DRM_MEM_BUFS);
		return DRM_ERR(ENOMEM);
		}
		}
		spin_unlock_irqrestore(&dev->drw_lock, irqflags);

		bitfield[i] = 0;
		}
		draw.handle = new_id;

		draw.handle = i * 8 * sizeof(*bitfield) + j + 1;
		DRM_DEBUG("%d\n", draw.handle);

		spin_lock_irqsave(&dev->drw_lock, irqflags);

		bitfield[i] \|= 1 << j;
		info[draw.handle - 1] = NULL;

		if (bitfield != dev->drw_bitfield) {
		memcpy(bitfield, dev->drw_bitfield, dev->drw_bitfield_length *
		sizeof(*bitfield));
		drm_free(dev->drw_bitfield, sizeof(bitfield)
		dev->drw_bitfield_length, DRM_MEM_BUFS);
		dev->drw_bitfield = bitfield;
		dev->drw_bitfield_length = bitfield_length;
		}

		if (info != dev->drw_info) {
		memcpy(info, dev->drw_info, dev->drw_info_length *
		sizeof(*info));
		drm_free(dev->drw_info, sizeof(info) dev->drw_info_length,
		DRM_MEM_BUFS);
		dev->drw_info = info;
		dev->drw_info_length = info_length;
		}

		spin_unlock_irqrestore(&dev->drw_lock, irqflags);

		DRM_COPY_TO_USER_IOCTL((struct drm_draw __user *)data, draw, sizeof(draw));

		return 0;
		@@ -132,133 +79,44 @@ int drm_rmdraw(DRM_IOCTL_ARGS)
		{
		DRM_DEVICE;
		struct drm_draw draw;
		int id, idx;
		unsigned int shift;
		unsigned long irqflags;
		u32 *bitfield = dev->drw_bitfield;
		unsigned int bitfield_length = dev->drw_bitfield_length;
		struct drm_drawable_info **info = dev->drw_info;
		unsigned int info_length = dev->drw_info_length;

		DRM_COPY_FROM_USER_IOCTL(draw, (struct drm_draw __user *) data,
		sizeof(draw));

		id = draw.handle - 1;
		idx = id / (8 * sizeof(*bitfield));
		shift = id % (8 * sizeof(*bitfield));

		if (idx < 0 \|\| idx >= bitfield_length \|\|
		!(bitfield[idx] & (1 << shift))) {
		DRM_DEBUG("No such drawable %d\n", draw.handle);
		return 0;
		}

		spin_lock_irqsave(&dev->drw_lock, irqflags);

		bitfield[idx] &= ~(1 << shift);

		spin_unlock_irqrestore(&dev->drw_lock, irqflags);

		if (info[id]) {
		drm_free(info[id]->rects, info[id]->num_rects *
		sizeof(struct drm_clip_rect), DRM_MEM_BUFS);
		drm_free(info[id], sizeof(**info), DRM_MEM_BUFS);
		}

		/* Can we shrink the arrays? */
		if (idx == bitfield_length - 1) {
		while (idx >= 0 && !bitfield[idx])
		--idx;

		bitfield_length = idx + 1;

		bitfield = NULL;

		if (bitfield_length) {
		if (bitfield_length != dev->drw_bitfield_length)
		bitfield = drm_alloc(bitfield_length *
		sizeof(*bitfield),
		DRM_MEM_BUFS);

		if (!bitfield) {
		bitfield = dev->drw_bitfield;
		bitfield_length = dev->drw_bitfield_length;
		}
		}
		}
		drm_free(drm_get_drawable_info(dev, draw.handle),
		sizeof(struct drm_drawable_info), DRM_MEM_BUFS);

		if (bitfield != dev->drw_bitfield) {
		info_length = 8 * sizeof(bitfield) bitfield_length;

		if (info_length) {
		info = drm_alloc(info_length * sizeof(*info),
		DRM_MEM_BUFS);

		if (!info) {
		info = dev->drw_info;
		info_length = dev->drw_info_length;
		}
		} else
		info = NULL;

		spin_lock_irqsave(&dev->drw_lock, irqflags);

		if (bitfield)
		memcpy(bitfield, dev->drw_bitfield, bitfield_length *
		sizeof(*bitfield));
		drm_free(dev->drw_bitfield, sizeof(bitfield)
		dev->drw_bitfield_length, DRM_MEM_BUFS);
		dev->drw_bitfield = bitfield;
		dev->drw_bitfield_length = bitfield_length;

		if (info != dev->drw_info) {
		if (info)
		memcpy(info, dev->drw_info, info_length *
		sizeof(*info));
		drm_free(dev->drw_info, sizeof(info)
		dev->drw_info_length, DRM_MEM_BUFS);
		dev->drw_info = info;
		dev->drw_info_length = info_length;
		}
		idr_remove(&dev->drw_idr, draw.handle);

		spin_unlock_irqrestore(&dev->drw_lock, irqflags);
		}

		DRM_DEBUG("%d\n", draw.handle);
		return 0;
		}

		int drm_update_drawable_info(DRM_IOCTL_ARGS) {
		int drm_update_drawable_info(DRM_IOCTL_ARGS)
		{
		DRM_DEVICE;
		struct drm_update_draw update;
		unsigned int id, idx, shift;
		u32 *bitfield = dev->drw_bitfield;
		unsigned long irqflags, bitfield_length = dev->drw_bitfield_length;
		struct drm_drawable_info *info;
		unsigned long irqflags;
		struct drm_clip_rect *rects;
		struct drm_drawable_info *info;
		int err;

		DRM_COPY_FROM_USER_IOCTL(update, (struct drm_update_draw __user *) data,
		sizeof(update));

		id = update.handle - 1;
		idx = id / (8 * sizeof(*bitfield));
		shift = id % (8 * sizeof(*bitfield));

		if (idx < 0 \|\| idx >= bitfield_length \|\|
		!(bitfield[idx] & (1 << shift))) {
		DRM_ERROR("No such drawable %d\n", update.handle);
		return DRM_ERR(EINVAL);
		}

		info = dev->drw_info[id];

		info = idr_find(&dev->drw_idr, update.handle);
		if (!info) {
		info = drm_calloc(1, sizeof(struct drm_drawable_info), DRM_MEM_BUFS);

		if (!info) {
		DRM_ERROR("Failed to allocate drawable info memory\n");
		return DRM_ERR(ENOMEM);
		info = drm_calloc(1, sizeof(*info), DRM_MEM_BUFS);
		if (!info)
		return -ENOMEM;
		if (IS_ERR(idr_replace(&dev->drw_idr, info, update.handle))) {
		DRM_ERROR("No such drawable %d\n", update.handle);
		drm_free(info, sizeof(*info), DRM_MEM_BUFS);
		return -EINVAL;
		}
		}

		@@ -295,12 +153,11 @@ int drm_update_drawable_info(DRM_IOCTL_ARGS) {

		info->rects = rects;
		info->num_rects = update.num;
		dev->drw_info[id] = info;

		spin_unlock_irqrestore(&dev->drw_lock, irqflags);

		DRM_DEBUG("Updated %d cliprects for drawable %d\n",
		info->num_rects, id);
		info->num_rects, update.handle);
		break;
		default:
		DRM_ERROR("Invalid update type %d\n", update.type);
		@@ -310,11 +167,9 @@ int drm_update_drawable_info(DRM_IOCTL_ARGS) {
		return 0;

		error:
		if (!dev->drw_info[id])
		drm_free(info, sizeof(*info), DRM_MEM_BUFS);
		else if (rects != dev->drw_info[id]->rects)
		drm_free(rects, update.num *
		sizeof(struct drm_clip_rect), DRM_MEM_BUFS);
		if (rects != info->rects)
		drm_free(rects, update.num * sizeof(struct drm_clip_rect),
		DRM_MEM_BUFS);

		return err;
		}
		@@ -322,20 +177,27 @@ error:
		/**
		* Caller must hold the drawable spinlock!
		*/
		struct drm_drawable_info drm_get_drawable_info(struct drm_device dev, drm_drawable_t id) {
		u32 *bitfield = dev->drw_bitfield;
		unsigned int idx, shift;

		id--;
		idx = id / (8 * sizeof(*bitfield));
		shift = id % (8 * sizeof(*bitfield));

		if (idx < 0 \|\| idx >= dev->drw_bitfield_length \|\|
		!(bitfield[idx] & (1 << shift))) {
		DRM_DEBUG("No such drawable %d\n", id);
		return NULL;
		struct drm_drawable_info drm_get_drawable_info(struct drm_device dev, drm_drawable_t id)
		{
		return idr_find(&dev->drw_idr, id);
		}
		EXPORT_SYMBOL(drm_get_drawable_info);

		static int drm_drawable_free(int idr, void p, void data)
		{
		struct drm_drawable_info *info = p;

		return dev->drw_info[id];
		if (info) {
		drm_free(info->rects, info->num_rects *
		sizeof(struct drm_clip_rect), DRM_MEM_BUFS);
		drm_free(info, sizeof(*info), DRM_MEM_BUFS);
		}

		return 0;
		}

		void drm_drawable_free_all(struct drm_device *dev)
		{
		idr_for_each(&dev->drw_idr, drm_drawable_free, NULL);
		idr_remove_all(&dev->drw_idr);
		}
		EXPORT_SYMBOL(drm_get_drawable_info);

drivers/char/drm/drm_drv.c

+3 −12

Original line number	Diff line number	Diff line
		@@ -151,19 +151,10 @@ int drm_lastclose(struct drm_device * dev)
		if (dev->irq_enabled)
		drm_irq_uninstall(dev);

		/* Free drawable information memory */
		for (i = 0; i < dev->drw_bitfield_length / sizeof(*dev->drw_bitfield);
		i++) {
		struct drm_drawable_info *info = drm_get_drawable_info(dev, i);

		if (info) {
		drm_free(info->rects, info->num_rects *
		sizeof(struct drm_clip_rect), DRM_MEM_BUFS);
		drm_free(info, sizeof(*info), DRM_MEM_BUFS);
		}
		}

		mutex_lock(&dev->struct_mutex);

		/* Free drawable information memory */
		drm_drawable_free_all(dev);
		del_timer(&dev->timer);

		/* Clear pid list */