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path: root/drivers/gpu/drm/vmwgfx/vmwgfx_gmr.c
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Diffstat (limited to 'drivers/gpu/drm/vmwgfx/vmwgfx_gmr.c')
-rw-r--r--drivers/gpu/drm/vmwgfx/vmwgfx_gmr.c81
1 files changed, 80 insertions, 1 deletions
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_gmr.c b/drivers/gpu/drm/vmwgfx/vmwgfx_gmr.c
index de0c5948521..f4e7763a769 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_gmr.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_gmr.c
@@ -1,6 +1,6 @@
/**************************************************************************
*
- * Copyright © 2009 VMware, Inc., Palo Alto, CA., USA
+ * Copyright © 2009-2011 VMware, Inc., Palo Alto, CA., USA
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
@@ -29,6 +29,77 @@
#include "drmP.h"
#include "ttm/ttm_bo_driver.h"
+#define VMW_PPN_SIZE sizeof(unsigned long)
+
+static int vmw_gmr2_bind(struct vmw_private *dev_priv,
+ struct page *pages[],
+ unsigned long num_pages,
+ int gmr_id)
+{
+ SVGAFifoCmdDefineGMR2 define_cmd;
+ SVGAFifoCmdRemapGMR2 remap_cmd;
+ uint32_t define_size = sizeof(define_cmd) + 4;
+ uint32_t remap_size = VMW_PPN_SIZE * num_pages + sizeof(remap_cmd) + 4;
+ uint32_t *cmd;
+ uint32_t *cmd_orig;
+ uint32_t i;
+
+ cmd_orig = cmd = vmw_fifo_reserve(dev_priv, define_size + remap_size);
+ if (unlikely(cmd == NULL))
+ return -ENOMEM;
+
+ define_cmd.gmrId = gmr_id;
+ define_cmd.numPages = num_pages;
+
+ remap_cmd.gmrId = gmr_id;
+ remap_cmd.flags = (VMW_PPN_SIZE > sizeof(*cmd)) ?
+ SVGA_REMAP_GMR2_PPN64 : SVGA_REMAP_GMR2_PPN32;
+ remap_cmd.offsetPages = 0;
+ remap_cmd.numPages = num_pages;
+
+ *cmd++ = SVGA_CMD_DEFINE_GMR2;
+ memcpy(cmd, &define_cmd, sizeof(define_cmd));
+ cmd += sizeof(define_cmd) / sizeof(uint32);
+
+ *cmd++ = SVGA_CMD_REMAP_GMR2;
+ memcpy(cmd, &remap_cmd, sizeof(remap_cmd));
+ cmd += sizeof(remap_cmd) / sizeof(uint32);
+
+ for (i = 0; i < num_pages; ++i) {
+ if (VMW_PPN_SIZE > 4)
+ *cmd = page_to_pfn(*pages++);
+ else
+ *((uint64_t *)cmd) = page_to_pfn(*pages++);
+
+ cmd += VMW_PPN_SIZE / sizeof(*cmd);
+ }
+
+ vmw_fifo_commit(dev_priv, define_size + remap_size);
+
+ return 0;
+}
+
+static void vmw_gmr2_unbind(struct vmw_private *dev_priv,
+ int gmr_id)
+{
+ SVGAFifoCmdDefineGMR2 define_cmd;
+ uint32_t define_size = sizeof(define_cmd) + 4;
+ uint32_t *cmd;
+
+ cmd = vmw_fifo_reserve(dev_priv, define_size);
+ if (unlikely(cmd == NULL)) {
+ DRM_ERROR("GMR2 unbind failed.\n");
+ return;
+ }
+ define_cmd.gmrId = gmr_id;
+ define_cmd.numPages = 0;
+
+ *cmd++ = SVGA_CMD_DEFINE_GMR2;
+ memcpy(cmd, &define_cmd, sizeof(define_cmd));
+
+ vmw_fifo_commit(dev_priv, define_size);
+}
+
/**
* FIXME: Adjust to the ttm lowmem / highmem storage to minimize
* the number of used descriptors.
@@ -170,6 +241,9 @@ int vmw_gmr_bind(struct vmw_private *dev_priv,
struct list_head desc_pages;
int ret;
+ if (likely(dev_priv->capabilities & SVGA_CAP_GMR2))
+ return vmw_gmr2_bind(dev_priv, pages, num_pages, gmr_id);
+
if (unlikely(!(dev_priv->capabilities & SVGA_CAP_GMR)))
return -EINVAL;
@@ -192,6 +266,11 @@ int vmw_gmr_bind(struct vmw_private *dev_priv,
void vmw_gmr_unbind(struct vmw_private *dev_priv, int gmr_id)
{
+ if (likely(dev_priv->capabilities & SVGA_CAP_GMR2)) {
+ vmw_gmr2_unbind(dev_priv, gmr_id);
+ return;
+ }
+
mutex_lock(&dev_priv->hw_mutex);
vmw_write(dev_priv, SVGA_REG_GMR_ID, gmr_id);
wmb();