1 files changed, 0 insertions, 568 deletions

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c b/drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c
deleted file mode 100644
index 3eb148667d63..000000000000
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c
+++ /dev/null
@@ -1,568 +0,0 @@
-/**************************************************************************
- *
- * Copyright © 2009 VMware, Inc., Palo Alto, CA., USA
- * All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the
- * "Software"), to deal in the Software without restriction, including
- * without limitation the rights to use, copy, modify, merge, publish,
- * distribute, sub license, and/or sell copies of the Software, and to
- * permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- *
- * The above copyright notice and this permission notice (including the
- * next paragraph) shall be included in all copies or substantial portions
- * of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
- * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
- * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
- * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
- * USE OR OTHER DEALINGS IN THE SOFTWARE.
- *
- **************************************************************************/
-
-#include "vmwgfx_drv.h"
-#include <drm/drmP.h>
-#include <drm/ttm/ttm_placement.h>
-
-bool vmw_fifo_have_3d(struct vmw_private *dev_priv)
-{
-	__le32 __iomem *fifo_mem = dev_priv->mmio_virt;
-	uint32_t fifo_min, hwversion;
-	const struct vmw_fifo_state *fifo = &dev_priv->fifo;
-
-	if (!(dev_priv->capabilities & SVGA_CAP_EXTENDED_FIFO))
-		return false;
-
-	fifo_min = ioread32(fifo_mem  + SVGA_FIFO_MIN);
-	if (fifo_min <= SVGA_FIFO_3D_HWVERSION * sizeof(unsigned int))
-		return false;
-
-	hwversion = ioread32(fifo_mem +
-			     ((fifo->capabilities &
-			       SVGA_FIFO_CAP_3D_HWVERSION_REVISED) ?
-			      SVGA_FIFO_3D_HWVERSION_REVISED :
-			      SVGA_FIFO_3D_HWVERSION));
-
-	if (hwversion == 0)
-		return false;
-
-	if (hwversion < SVGA3D_HWVERSION_WS8_B1)
-		return false;
-
-	/* Non-Screen Object path does not support surfaces */
-	if (!dev_priv->sou_priv)
-		return false;
-
-	return true;
-}
-
-bool vmw_fifo_have_pitchlock(struct vmw_private *dev_priv)
-{
-	__le32 __iomem *fifo_mem = dev_priv->mmio_virt;
-	uint32_t caps;
-
-	if (!(dev_priv->capabilities & SVGA_CAP_EXTENDED_FIFO))
-		return false;
-
-	caps = ioread32(fifo_mem + SVGA_FIFO_CAPABILITIES);
-	if (caps & SVGA_FIFO_CAP_PITCHLOCK)
-		return true;
-
-	return false;
-}
-
-int vmw_fifo_init(struct vmw_private *dev_priv, struct vmw_fifo_state *fifo)
-{
-	__le32 __iomem *fifo_mem = dev_priv->mmio_virt;
-	uint32_t max;
-	uint32_t min;
-	uint32_t dummy;
-
-	fifo->static_buffer_size = VMWGFX_FIFO_STATIC_SIZE;
-	fifo->static_buffer = vmalloc(fifo->static_buffer_size);
-	if (unlikely(fifo->static_buffer == NULL))
-		return -ENOMEM;
-
-	fifo->dynamic_buffer = NULL;
-	fifo->reserved_size = 0;
-	fifo->using_bounce_buffer = false;
-
-	mutex_init(&fifo->fifo_mutex);
-	init_rwsem(&fifo->rwsem);
-
-	/*
-	 * Allow mapping the first page read-only to user-space.
-	 */
-
-	DRM_INFO("width %d\n", vmw_read(dev_priv, SVGA_REG_WIDTH));
-	DRM_INFO("height %d\n", vmw_read(dev_priv, SVGA_REG_HEIGHT));
-	DRM_INFO("bpp %d\n", vmw_read(dev_priv, SVGA_REG_BITS_PER_PIXEL));
-
-	mutex_lock(&dev_priv->hw_mutex);
-	dev_priv->enable_state = vmw_read(dev_priv, SVGA_REG_ENABLE);
-	dev_priv->config_done_state = vmw_read(dev_priv, SVGA_REG_CONFIG_DONE);
-	dev_priv->traces_state = vmw_read(dev_priv, SVGA_REG_TRACES);
-	vmw_write(dev_priv, SVGA_REG_ENABLE, 1);
-
-	min = 4;
-	if (dev_priv->capabilities & SVGA_CAP_EXTENDED_FIFO)
-		min = vmw_read(dev_priv, SVGA_REG_MEM_REGS);
-	min <<= 2;
-
-	if (min < PAGE_SIZE)
-		min = PAGE_SIZE;
-
-	iowrite32(min, fifo_mem + SVGA_FIFO_MIN);
-	iowrite32(dev_priv->mmio_size, fifo_mem + SVGA_FIFO_MAX);
-	wmb();
-	iowrite32(min,  fifo_mem + SVGA_FIFO_NEXT_CMD);
-	iowrite32(min,  fifo_mem + SVGA_FIFO_STOP);
-	iowrite32(0, fifo_mem + SVGA_FIFO_BUSY);
-	mb();
-
-	vmw_write(dev_priv, SVGA_REG_CONFIG_DONE, 1);
-	mutex_unlock(&dev_priv->hw_mutex);
-
-	max = ioread32(fifo_mem + SVGA_FIFO_MAX);
-	min = ioread32(fifo_mem  + SVGA_FIFO_MIN);
-	fifo->capabilities = ioread32(fifo_mem + SVGA_FIFO_CAPABILITIES);
-
-	DRM_INFO("Fifo max 0x%08x min 0x%08x cap 0x%08x\n",
-		 (unsigned int) max,
-		 (unsigned int) min,
-		 (unsigned int) fifo->capabilities);
-
-	atomic_set(&dev_priv->marker_seq, dev_priv->last_read_seqno);
-	iowrite32(dev_priv->last_read_seqno, fifo_mem + SVGA_FIFO_FENCE);
-	vmw_marker_queue_init(&fifo->marker_queue);
-	return vmw_fifo_send_fence(dev_priv, &dummy);
-}
-
-void vmw_fifo_ping_host(struct vmw_private *dev_priv, uint32_t reason)
-{
-	__le32 __iomem *fifo_mem = dev_priv->mmio_virt;
-
-	mutex_lock(&dev_priv->hw_mutex);
-
-	if (unlikely(ioread32(fifo_mem + SVGA_FIFO_BUSY) == 0)) {
-		iowrite32(1, fifo_mem + SVGA_FIFO_BUSY);
-		vmw_write(dev_priv, SVGA_REG_SYNC, reason);
-	}
-
-	mutex_unlock(&dev_priv->hw_mutex);
-}
-
-void vmw_fifo_release(struct vmw_private *dev_priv, struct vmw_fifo_state *fifo)
-{
-	__le32 __iomem *fifo_mem = dev_priv->mmio_virt;
-
-	mutex_lock(&dev_priv->hw_mutex);
-
-	while (vmw_read(dev_priv, SVGA_REG_BUSY) != 0)
-		vmw_write(dev_priv, SVGA_REG_SYNC, SVGA_SYNC_GENERIC);
-
-	dev_priv->last_read_seqno = ioread32(fifo_mem + SVGA_FIFO_FENCE);
-
-	vmw_write(dev_priv, SVGA_REG_CONFIG_DONE,
-		  dev_priv->config_done_state);
-	vmw_write(dev_priv, SVGA_REG_ENABLE,
-		  dev_priv->enable_state);
-	vmw_write(dev_priv, SVGA_REG_TRACES,
-		  dev_priv->traces_state);
-
-	mutex_unlock(&dev_priv->hw_mutex);
-	vmw_marker_queue_takedown(&fifo->marker_queue);
-
-	if (likely(fifo->static_buffer != NULL)) {
-		vfree(fifo->static_buffer);
-		fifo->static_buffer = NULL;
-	}
-
-	if (likely(fifo->dynamic_buffer != NULL)) {
-		vfree(fifo->dynamic_buffer);
-		fifo->dynamic_buffer = NULL;
-	}
-}
-
-static bool vmw_fifo_is_full(struct vmw_private *dev_priv, uint32_t bytes)
-{
-	__le32 __iomem *fifo_mem = dev_priv->mmio_virt;
-	uint32_t max = ioread32(fifo_mem + SVGA_FIFO_MAX);
-	uint32_t next_cmd = ioread32(fifo_mem + SVGA_FIFO_NEXT_CMD);
-	uint32_t min = ioread32(fifo_mem + SVGA_FIFO_MIN);
-	uint32_t stop = ioread32(fifo_mem + SVGA_FIFO_STOP);
-
-	return ((max - next_cmd) + (stop - min) <= bytes);
-}
-
-static int vmw_fifo_wait_noirq(struct vmw_private *dev_priv,
-			       uint32_t bytes, bool interruptible,
-			       unsigned long timeout)
-{
-	int ret = 0;
-	unsigned long end_jiffies = jiffies + timeout;
-	DEFINE_WAIT(__wait);
-
-	DRM_INFO("Fifo wait noirq.\n");
-
-	for (;;) {
-		prepare_to_wait(&dev_priv->fifo_queue, &__wait,
-				(interruptible) ?
-				TASK_INTERRUPTIBLE : TASK_UNINTERRUPTIBLE);
-		if (!vmw_fifo_is_full(dev_priv, bytes))
-			break;
-		if (time_after_eq(jiffies, end_jiffies)) {
-			ret = -EBUSY;
-			DRM_ERROR("SVGA device lockup.\n");
-			break;
-		}
-		schedule_timeout(1);
-		if (interruptible && signal_pending(current)) {
-			ret = -ERESTARTSYS;
-			break;
-		}
-	}
-	finish_wait(&dev_priv->fifo_queue, &__wait);
-	wake_up_all(&dev_priv->fifo_queue);
-	DRM_INFO("Fifo noirq exit.\n");
-	return ret;
-}
-
-static int vmw_fifo_wait(struct vmw_private *dev_priv,
-			 uint32_t bytes, bool interruptible,
-			 unsigned long timeout)
-{
-	long ret = 1L;
-	unsigned long irq_flags;
-
-	if (likely(!vmw_fifo_is_full(dev_priv, bytes)))
-		return 0;
-
-	vmw_fifo_ping_host(dev_priv, SVGA_SYNC_FIFOFULL);
-	if (!(dev_priv->capabilities & SVGA_CAP_IRQMASK))
-		return vmw_fifo_wait_noirq(dev_priv, bytes,
-					   interruptible, timeout);
-
-	mutex_lock(&dev_priv->hw_mutex);
-	if (atomic_add_return(1, &dev_priv->fifo_queue_waiters) > 0) {
-		spin_lock_irqsave(&dev_priv->irq_lock, irq_flags);
-		outl(SVGA_IRQFLAG_FIFO_PROGRESS,
-		     dev_priv->io_start + VMWGFX_IRQSTATUS_PORT);
-		dev_priv->irq_mask |= SVGA_IRQFLAG_FIFO_PROGRESS;
-		vmw_write(dev_priv, SVGA_REG_IRQMASK, dev_priv->irq_mask);
-		spin_unlock_irqrestore(&dev_priv->irq_lock, irq_flags);
-	}
-	mutex_unlock(&dev_priv->hw_mutex);
-
-	if (interruptible)
-		ret = wait_event_interruptible_timeout
-		    (dev_priv->fifo_queue,
-		     !vmw_fifo_is_full(dev_priv, bytes), timeout);
-	else
-		ret = wait_event_timeout
-		    (dev_priv->fifo_queue,
-		     !vmw_fifo_is_full(dev_priv, bytes), timeout);
-
-	if (unlikely(ret == 0))
-		ret = -EBUSY;
-	else if (likely(ret > 0))
-		ret = 0;
-
-	mutex_lock(&dev_priv->hw_mutex);
-	if (atomic_dec_and_test(&dev_priv->fifo_queue_waiters)) {
-		spin_lock_irqsave(&dev_priv->irq_lock, irq_flags);
-		dev_priv->irq_mask &= ~SVGA_IRQFLAG_FIFO_PROGRESS;
-		vmw_write(dev_priv, SVGA_REG_IRQMASK, dev_priv->irq_mask);
-		spin_unlock_irqrestore(&dev_priv->irq_lock, irq_flags);
-	}
-	mutex_unlock(&dev_priv->hw_mutex);
-
-	return ret;
-}
-
-/**
- * Reserve @bytes number of bytes in the fifo.
- *
- * This function will return NULL (error) on two conditions:
- *  If it timeouts waiting for fifo space, or if @bytes is larger than the
- *   available fifo space.
- *
- * Returns:
- *   Pointer to the fifo, or null on error (possible hardware hang).
- */
-void *vmw_fifo_reserve(struct vmw_private *dev_priv, uint32_t bytes)
-{
-	struct vmw_fifo_state *fifo_state = &dev_priv->fifo;
-	__le32 __iomem *fifo_mem = dev_priv->mmio_virt;
-	uint32_t max;
-	uint32_t min;
-	uint32_t next_cmd;
-	uint32_t reserveable = fifo_state->capabilities & SVGA_FIFO_CAP_RESERVE;
-	int ret;
-
-	mutex_lock(&fifo_state->fifo_mutex);
-	max = ioread32(fifo_mem + SVGA_FIFO_MAX);
-	min = ioread32(fifo_mem + SVGA_FIFO_MIN);
-	next_cmd = ioread32(fifo_mem + SVGA_FIFO_NEXT_CMD);
-
-	if (unlikely(bytes >= (max - min)))
-		goto out_err;
-
-	BUG_ON(fifo_state->reserved_size != 0);
-	BUG_ON(fifo_state->dynamic_buffer != NULL);
-
-	fifo_state->reserved_size = bytes;
-
-	while (1) {
-		uint32_t stop = ioread32(fifo_mem + SVGA_FIFO_STOP);
-		bool need_bounce = false;
-		bool reserve_in_place = false;
-
-		if (next_cmd >= stop) {
-			if (likely((next_cmd + bytes < max ||
-				    (next_cmd + bytes == max && stop > min))))
-				reserve_in_place = true;
-
-			else if (vmw_fifo_is_full(dev_priv, bytes)) {
-				ret = vmw_fifo_wait(dev_priv, bytes,
-						    false, 3 * HZ);
-				if (unlikely(ret != 0))
-					goto out_err;
-			} else
-				need_bounce = true;
-
-		} else {
-
-			if (likely((next_cmd + bytes < stop)))
-				reserve_in_place = true;
-			else {
-				ret = vmw_fifo_wait(dev_priv, bytes,
-						    false, 3 * HZ);
-				if (unlikely(ret != 0))
-					goto out_err;
-			}
-		}
-
-		if (reserve_in_place) {
-			if (reserveable || bytes <= sizeof(uint32_t)) {
-				fifo_state->using_bounce_buffer = false;
-
-				if (reserveable)
-					iowrite32(bytes, fifo_mem +
-						  SVGA_FIFO_RESERVED);
-				return fifo_mem + (next_cmd >> 2);
-			} else {
-				need_bounce = true;
-			}
-		}
-
-		if (need_bounce) {
-			fifo_state->using_bounce_buffer = true;
-			if (bytes < fifo_state->static_buffer_size)
-				return fifo_state->static_buffer;
-			else {
-				fifo_state->dynamic_buffer = vmalloc(bytes);
-				return fifo_state->dynamic_buffer;
-			}
-		}
-	}
-out_err:
-	fifo_state->reserved_size = 0;
-	mutex_unlock(&fifo_state->fifo_mutex);
-	return NULL;
-}
-
-static void vmw_fifo_res_copy(struct vmw_fifo_state *fifo_state,
-			      __le32 __iomem *fifo_mem,
-			      uint32_t next_cmd,
-			      uint32_t max, uint32_t min, uint32_t bytes)
-{
-	uint32_t chunk_size = max - next_cmd;
-	uint32_t rest;
-	uint32_t *buffer = (fifo_state->dynamic_buffer != NULL) ?
-	    fifo_state->dynamic_buffer : fifo_state->static_buffer;
-
-	if (bytes < chunk_size)
-		chunk_size = bytes;
-
-	iowrite32(bytes, fifo_mem + SVGA_FIFO_RESERVED);
-	mb();
-	memcpy_toio(fifo_mem + (next_cmd >> 2), buffer, chunk_size);
-	rest = bytes - chunk_size;
-	if (rest)
-		memcpy_toio(fifo_mem + (min >> 2), buffer + (chunk_size >> 2),
-			    rest);
-}
-
-static void vmw_fifo_slow_copy(struct vmw_fifo_state *fifo_state,
-			       __le32 __iomem *fifo_mem,
-			       uint32_t next_cmd,
-			       uint32_t max, uint32_t min, uint32_t bytes)
-{
-	uint32_t *buffer = (fifo_state->dynamic_buffer != NULL) ?
-	    fifo_state->dynamic_buffer : fifo_state->static_buffer;
-
-	while (bytes > 0) {
-		iowrite32(*buffer++, fifo_mem + (next_cmd >> 2));
-		next_cmd += sizeof(uint32_t);
-		if (unlikely(next_cmd == max))
-			next_cmd = min;
-		mb();
-		iowrite32(next_cmd, fifo_mem + SVGA_FIFO_NEXT_CMD);
-		mb();
-		bytes -= sizeof(uint32_t);
-	}
-}
-
-void vmw_fifo_commit(struct vmw_private *dev_priv, uint32_t bytes)
-{
-	struct vmw_fifo_state *fifo_state = &dev_priv->fifo;
-	__le32 __iomem *fifo_mem = dev_priv->mmio_virt;
-	uint32_t next_cmd = ioread32(fifo_mem + SVGA_FIFO_NEXT_CMD);
-	uint32_t max = ioread32(fifo_mem + SVGA_FIFO_MAX);
-	uint32_t min = ioread32(fifo_mem + SVGA_FIFO_MIN);
-	bool reserveable = fifo_state->capabilities & SVGA_FIFO_CAP_RESERVE;
-
-	BUG_ON((bytes & 3) != 0);
-	BUG_ON(bytes > fifo_state->reserved_size);
-
-	fifo_state->reserved_size = 0;
-
-	if (fifo_state->using_bounce_buffer) {
-		if (reserveable)
-			vmw_fifo_res_copy(fifo_state, fifo_mem,
-					  next_cmd, max, min, bytes);
-		else
-			vmw_fifo_slow_copy(fifo_state, fifo_mem,
-					   next_cmd, max, min, bytes);
-
-		if (fifo_state->dynamic_buffer) {
-			vfree(fifo_state->dynamic_buffer);
-			fifo_state->dynamic_buffer = NULL;
-		}
-
-	}
-
-	down_write(&fifo_state->rwsem);
-	if (fifo_state->using_bounce_buffer || reserveable) {
-		next_cmd += bytes;
-		if (next_cmd >= max)
-			next_cmd -= max - min;
-		mb();
-		iowrite32(next_cmd, fifo_mem + SVGA_FIFO_NEXT_CMD);
-	}
-
-	if (reserveable)
-		iowrite32(0, fifo_mem + SVGA_FIFO_RESERVED);
-	mb();
-	up_write(&fifo_state->rwsem);
-	vmw_fifo_ping_host(dev_priv, SVGA_SYNC_GENERIC);
-	mutex_unlock(&fifo_state->fifo_mutex);
-}
-
-int vmw_fifo_send_fence(struct vmw_private *dev_priv, uint32_t *seqno)
-{
-	struct vmw_fifo_state *fifo_state = &dev_priv->fifo;
-	struct svga_fifo_cmd_fence *cmd_fence;
-	void *fm;
-	int ret = 0;
-	uint32_t bytes = sizeof(__le32) + sizeof(*cmd_fence);
-
-	fm = vmw_fifo_reserve(dev_priv, bytes);
-	if (unlikely(fm == NULL)) {
-		*seqno = atomic_read(&dev_priv->marker_seq);
-		ret = -ENOMEM;
-		(void)vmw_fallback_wait(dev_priv, false, true, *seqno,
-					false, 3*HZ);
-		goto out_err;
-	}
-
-	do {
-		*seqno = atomic_add_return(1, &dev_priv->marker_seq);
-	} while (*seqno == 0);
-
-	if (!(fifo_state->capabilities & SVGA_FIFO_CAP_FENCE)) {
-
-		/*
-		 * Don't request hardware to send a fence. The
-		 * waiting code in vmwgfx_irq.c will emulate this.
-		 */
-
-		vmw_fifo_commit(dev_priv, 0);
-		return 0;
-	}
-
-	*(__le32 *) fm = cpu_to_le32(SVGA_CMD_FENCE);
-	cmd_fence = (struct svga_fifo_cmd_fence *)
-	    ((unsigned long)fm + sizeof(__le32));
-
-	iowrite32(*seqno, &cmd_fence->fence);
-	vmw_fifo_commit(dev_priv, bytes);
-	(void) vmw_marker_push(&fifo_state->marker_queue, *seqno);
-	vmw_update_seqno(dev_priv, fifo_state);
-
-out_err:
-	return ret;
-}
-
-/**
- * vmw_fifo_emit_dummy_query - emits a dummy query to the fifo.
- *
- * @dev_priv: The device private structure.
- * @cid: The hardware context id used for the query.
- *
- * This function is used to emit a dummy occlusion query with
- * no primitives rendered between query begin and query end.
- * It's used to provide a query barrier, in order to know that when
- * this query is finished, all preceding queries are also finished.
- *
- * A Query results structure should have been initialized at the start
- * of the dev_priv->dummy_query_bo buffer object. And that buffer object
- * must also be either reserved or pinned when this function is called.
- *
- * Returns -ENOMEM on failure to reserve fifo space.
- */
-int vmw_fifo_emit_dummy_query(struct vmw_private *dev_priv,
-			      uint32_t cid)
-{
-	/*
-	 * A query wait without a preceding query end will
-	 * actually finish all queries for this cid
-	 * without writing to the query result structure.
-	 */
-
-	struct ttm_buffer_object *bo = dev_priv->dummy_query_bo;
-	struct {
-		SVGA3dCmdHeader header;
-		SVGA3dCmdWaitForQuery body;
-	} *cmd;
-
-	cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd));
-
-	if (unlikely(cmd == NULL)) {
-		DRM_ERROR("Out of fifo space for dummy query.\n");
-		return -ENOMEM;
-	}
-
-	cmd->header.id = SVGA_3D_CMD_WAIT_FOR_QUERY;
-	cmd->header.size = sizeof(cmd->body);
-	cmd->body.cid = cid;
-	cmd->body.type = SVGA3D_QUERYTYPE_OCCLUSION;
-
-	if (bo->mem.mem_type == TTM_PL_VRAM) {
-		cmd->body.guestResult.gmrId = SVGA_GMR_FRAMEBUFFER;
-		cmd->body.guestResult.offset = bo->offset;
-	} else {
-		cmd->body.guestResult.gmrId = bo->mem.start;
-		cmd->body.guestResult.offset = 0;
-	}
-
-	vmw_fifo_commit(dev_priv, sizeof(*cmd));
-
-	return 0;
-}