[Intel-gfx] [PATCH 01/53] drm/i915: Add "release id" version

Matt Roper
2021-07-01T20:25:23Z

From: Lucas De Marchi <lucas.demarchi@intel.com>

Besides the arch version returned by GRAPHICS_VER(), new platforms
contain a "release id" to make clear the difference from one platform to
another. Although for the first ones we may use them as if they were a
major/minor version, that is not true for all platforms: we may have a
`release_id == n` that is closer to `n - 2` than to `n - 1`.

However the release id number is not defined by hardware until we start
using the GMD_ID register. For the platforms before that register is
useful we will set the values in software and we can set them as we
please. So the plan is to set them so we can group different features
under a single GRAPHICS_VER_FULL() check.

After GMD_ID is used, the usefulness of a "full version check" will be
greatly reduced and will be mostly used for deciding workarounds and a
few code paths. So it makes sense to keep it as a separate field from
graphics_ver.

Also, currently there is not much use for the release id in media and
display, so keep them out.

This is a mix of 2 independent changes: one by me and the other by Matt
Roper.

Cc: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
---
drivers/gpu/drm/i915/i915_drv.h | 6 ++++++
drivers/gpu/drm/i915/intel_device_info.c | 2 ++
drivers/gpu/drm/i915/intel_device_info.h | 2 ++
3 files changed, 10 insertions(+)

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 6dff4ca01241..9639800485b9 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -1258,11 +1258,17 @@ static inline struct drm_i915_private *pdev_to_i915(struct pci_dev *pdev)
*/
#define IS_GEN(dev_priv, n) (GRAPHICS_VER(dev_priv) == (n))

+#define IP_VER(ver, release) ((ver) << 8 | (release))
+
#define GRAPHICS_VER(i915) (INTEL_INFO(i915)->graphics_ver)
+#define GRAPHICS_VER_FULL(i915) IP_VER(INTEL_INFO(i915)->graphics_ver, \
+ INTEL_INFO(i915)->graphics_ver_release)
#define IS_GRAPHICS_VER(i915, from, until) \
(GRAPHICS_VER(i915) >= (from) && GRAPHICS_VER(i915) <= (until))

#define MEDIA_VER(i915) (INTEL_INFO(i915)->media_ver)
+#define MEDIA_VER_FULL(i915) IP_VER(INTEL_INFO(i915)->media_ver, \
+ INTEL_INFO(i915)->media_ver_release)
#define IS_MEDIA_VER(i915, from, until) \
(MEDIA_VER(i915) >= (from) && MEDIA_VER(i915) <= (until))

diff --git a/drivers/gpu/drm/i915/intel_device_info.c b/drivers/gpu/drm/i915/intel_device_info.c
index 7eaa92fee421..e8ad14f002c1 100644
--- a/drivers/gpu/drm/i915/intel_device_info.c
+++ b/drivers/gpu/drm/i915/intel_device_info.c
@@ -97,7 +97,9 @@ void intel_device_info_print_static(const struct intel_device_info *info,
struct drm_printer *p)
{
drm_printf(p, "graphics_ver: %u\n", info->graphics_ver);
+ drm_printf(p, "graphics_ver_release: %u\n", info->graphics_ver_release);
drm_printf(p, "media_ver: %u\n", info->media_ver);
+ drm_printf(p, "media_ver_release: %u\n", info->media_ver_release);
drm_printf(p, "display_ver: %u\n", info->display.ver);
drm_printf(p, "gt: %d\n", info->gt);
drm_printf(p, "iommu: %s\n", iommu_name());
diff --git a/drivers/gpu/drm/i915/intel_device_info.h b/drivers/gpu/drm/i915/intel_device_info.h
index b326aff65cd6..944a5ff4df49 100644
--- a/drivers/gpu/drm/i915/intel_device_info.h
+++ b/drivers/gpu/drm/i915/intel_device_info.h
@@ -162,7 +162,9 @@ enum intel_ppgtt_type {

struct intel_device_info {
u8 graphics_ver;
+ u8 graphics_ver_release;
u8 media_ver;
+ u8 media_ver_release;

u8 gt; /* GT number, 0 if undefined */
intel_engine_mask_t platform_engine_mask; /* Engines supported by the HW */