Signed-off-by: Thomas Hellstrom <thellstrom@xxxxxxxxxx>
Reviewed-by: José Fonseca <jfonseca@xxxxxxxxxx>
---
drivers/gpu/drm/vmwgfx/svga_reg.h | 96 ++++++++++++++++++++++++++++++++++-
drivers/gpu/drm/vmwgfx/vmwgfx_drv.c | 4 ++
2 files changed, 99 insertions(+), 1 deletions(-)
diff --git a/drivers/gpu/drm/vmwgfx/svga_reg.h b/drivers/gpu/drm/vmwgfx/svga_reg.h
index 1b96c2e..ec5aad9 100644
--- a/drivers/gpu/drm/vmwgfx/svga_reg.h
+++ b/drivers/gpu/drm/vmwgfx/svga_reg.h
@@ -39,6 +39,15 @@
#define PCI_DEVICE_ID_VMWARE_SVGA2 0x0405
/*
+ * SVGA_REG_ENABLE bit definitions.
+ */
+#define SVGA_REG_ENABLE_DISABLE 0
+#define SVGA_REG_ENABLE_ENABLE 1
+#define SVGA_REG_ENABLE_HIDE 2
+#define SVGA_REG_ENABLE_ENABLE_HIDE (SVGA_REG_ENABLE_ENABLE |\
+ SVGA_REG_ENABLE_HIDE)
+
+/*
* Legal values for the SVGA_REG_CURSOR_ON register in old-fashioned
* cursor bypass mode. This is still supported, but no new guest
* drivers should use it.
@@ -158,7 +167,9 @@ enum {
SVGA_REG_GMR_MAX_DESCRIPTOR_LENGTH = 44,
SVGA_REG_TRACES = 45, /* Enable trace-based updates even when FIFO is on */
- SVGA_REG_TOP = 46, /* Must be 1 more than the last register */
+ SVGA_REG_GMRS_MAX_PAGES = 46, /* Maximum number of 4KB pages for all GMRs */
+ SVGA_REG_MEMORY_SIZE = 47, /* Total dedicated device memory excluding FIFO */
+ SVGA_REG_TOP = 48, /* Must be 1 more than the last register */
SVGA_PALETTE_BASE = 1024, /* Base of SVGA color map */
/* Next 768 (== 256*3) registers exist for colormap */
@@ -370,6 +381,15 @@ struct SVGASignedPoint {
* Note the holes in the bitfield. Missing bits have been deprecated,
* and must not be reused. Those capabilities will never be reported
* by new versions of the SVGA device.
+ *
+ * SVGA_CAP_GMR2 --
+ * Provides asynchronous commands to define and remap guest memory
+ * regions. Adds device registers SVGA_REG_GMRS_MAX_PAGES and
+ * SVGA_REG_MEMORY_SIZE.
+ *
+ * SVGA_CAP_SCREEN_OBJECT_2 --
+ * Allow screen object support, and require backing stores from the
+ * guest for each screen object.
*/
#define SVGA_CAP_NONE 0x00000000
@@ -387,6 +407,8 @@ struct SVGASignedPoint {
#define SVGA_CAP_DISPLAY_TOPOLOGY 0x00080000 // Legacy multi-monitor support
#define SVGA_CAP_GMR 0x00100000
#define SVGA_CAP_TRACES 0x00200000
+#define SVGA_CAP_GMR2 0x00400000
+#define SVGA_CAP_SCREEN_OBJECT_2 0x00800000
/*
@@ -885,6 +907,8 @@ typedef enum {
SVGA_CMD_BLIT_SCREEN_TO_GMRFB = 38,
SVGA_CMD_ANNOTATION_FILL = 39,
SVGA_CMD_ANNOTATION_COPY = 40,
+ SVGA_CMD_DEFINE_GMR2 = 41,
+ SVGA_CMD_REMAP_GMR2 = 42,
SVGA_CMD_MAX
} SVGAFifoCmdId;
@@ -1343,4 +1367,74 @@ struct {
uint32 srcScreenId;
} SVGAFifoCmdAnnotationCopy;
+
+/*
+ * SVGA_CMD_DEFINE_GMR2 --
+ *
+ * Define guest memory region v2. See the description of GMRs above.
+ *
+ * Availability:
+ * SVGA_CAP_GMR2
+ */
+
+typedef
+struct {
+ uint32 gmrId;
+ uint32 numPages;
+}
+SVGAFifoCmdDefineGMR2;
+
+
+/*
+ * SVGA_CMD_REMAP_GMR2 --
+ *
+ * Remap guest memory region v2. See the description of GMRs above.
+ *
+ * This command allows guest to modify a portion of an existing GMR by
+ * invalidating it or reassigning it to different guest physical pages.
+ * The pages are identified by physical page number (PPN). The pages
+ * are assumed to be pinned and valid for DMA operations.
+ *
+ * Description of command flags:
+ *
+ * SVGA_REMAP_GMR2_VIA_GMR: If enabled, references a PPN list in a GMR.
+ * The PPN list must not overlap with the remap region (this can be
+ * handled trivially by referencing a separate GMR). If flag is
+ * disabled, PPN list is appended to SVGARemapGMR command.
+ *
+ * SVGA_REMAP_GMR2_PPN64: If set, PPN list is in PPN64 format, otherwise
+ * it is in PPN32 format.
+ *
+ * SVGA_REMAP_GMR2_SINGLE_PPN: If set, PPN list contains a single entry.
+ * A single PPN can be used to invalidate a portion of a GMR or
+ * map it to to a single guest scratch page.
+ *
+ * Availability:
+ * SVGA_CAP_GMR2
+ */
+
+typedef enum {
+ SVGA_REMAP_GMR2_PPN32 = 0,
+ SVGA_REMAP_GMR2_VIA_GMR = (1 << 0),
+ SVGA_REMAP_GMR2_PPN64 = (1 << 1),
+ SVGA_REMAP_GMR2_SINGLE_PPN = (1 << 2),
+} SVGARemapGMR2Flags;
+
+typedef
+struct {
+ uint32 gmrId;
+ SVGARemapGMR2Flags flags;
+ uint32 offsetPages; /* offset in pages to begin remap */
+ uint32 numPages; /* number of pages to remap */
+ /*
+ * Followed by additional data depending on SVGARemapGMR2Flags.
+ *
+ * If flag SVGA_REMAP_GMR2_VIA_GMR is set, single SVGAGuestPtr follows.
+ * Otherwise an array of page descriptors in PPN32 or PPN64 format
+ * (according to flag SVGA_REMAP_GMR2_PPN64) follows. If flag
+ * SVGA_REMAP_GMR2_SINGLE_PPN is set, array contains a single entry.
+ */
+}
+SVGAFifoCmdRemapGMR2;
+
#endif
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
index 96949b9..3a98e56 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
@@ -189,6 +189,10 @@ static void vmw_print_capabilities(uint32_t capabilities)
DRM_INFO(" GMR.\n");
if (capabilities & SVGA_CAP_TRACES)
DRM_INFO(" Traces.\n");
+ if (capabilities & SVGA_CAP_GMR2)
+ DRM_INFO(" GMR2.\n");
+ if (capabilities & SVGA_CAP_SCREEN_OBJECT_2)
+ DRM_INFO(" Screen Object 2.\n");
}
static int vmw_request_device(struct vmw_private *dev_priv)
--
1.7.4.4
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