@@ -1247,6 +1247,8 @@ static inline struct drm_i915_private *pdev_to_i915(struct pci_dev *pdev)
#define INTEL_GEN(dev_priv) (INTEL_INFO(dev_priv)->gen)
#define INTEL_DEVID(dev_priv) (RUNTIME_INFO(dev_priv)->device_id)
+#define DISPLAY_VER(i915) INTEL_INFO(i915)->display_ver
+
#define REVID_FOREVER 0xff
#define INTEL_REVID(dev_priv) (to_pci_dev((dev_priv)->drm.dev)->revision)
@@ -36,7 +36,7 @@
#include "i915_selftest.h"
#define PLATFORM(x) .platform = (x)
-#define GEN(x) .gen = (x), .gen_mask = BIT((x) - 1)
+#define GEN(x) .gen = (x), .gen_mask = BIT((x) - 1), .display_ver = x
#define I845_PIPE_OFFSETS \
.pipe_offsets = { \
@@ -162,6 +162,9 @@ struct intel_device_info {
u8 gen;
u8 gt; /* GT number, 0 if undefined */
+
+ u8 display_ver;
+
intel_engine_mask_t platform_engine_mask; /* Engines supported by the HW */
enum intel_platform platform;
Although we've long referred to platforms by a single "GEN" number, the hardware teams have recommended that we stop doing this since the various component IP blocks are going to start using independent number schemes with varying cadence. To support this, hardware platforms a bit down the road are going to start providing MMIO registers that the driver can read to obtain the "graphics version," "media version," and "display version" without needing to do a PCI ID -> platform -> version translation. Although our current platforms don't yet expose these registers (and the next couple we release probably won't have them yet either), the hardware teams would still like to see us move to this independent numbering scheme now in preparation. For i915 that means we should try to eliminate all usage of INTEL_GEN() throughout our code and instead replace it with separate GRAPHICS_VER(), MEDIA_VER(), and DISPLAY_VER() constructs in the code. For old platforms, these will all usually give the same value for each IP block (aside from a few special cases like GLK which we can no more accurately represent as graphics=9 + display=10), but future platforms will have more flexibility to bump IP version numbers independently. The next hardware platform we'll be upstreaming (very soon!) will have a display version of 13 and a graphics version of 12, so let's just the first step of breaking out DISPLAY_VER(), but leaving the rest of INTEL_GEN() untouched for now. For now we'll automatically derive the display version from the platform's INTEL_GEN() value except in cases where an alternative display version is explicitly provided in the device info structure. Signed-off-by: Matt Roper <matthew.d.roper@intel.com> --- drivers/gpu/drm/i915/i915_drv.h | 2 ++ drivers/gpu/drm/i915/i915_pci.c | 2 +- drivers/gpu/drm/i915/intel_device_info.h | 3 +++ 3 files changed, 6 insertions(+), 1 deletion(-)