On 4/16/19 10:39 PM, Michal Wajdeczko wrote:
There are few minor changes in the CSS header related to the version
numbering in new GuC firmwares. Update our definition and start using
common tools for extracting bitfields.
v2: drop deprecated prod_preprod_fw field, replace unions with bit defs
Signed-off-by: Michal Wajdeczko <michal.wajdeczko@xxxxxxxxx>
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@xxxxxxxxx>
Cc: Joonas Lahtinen <joonas.lahtinen@xxxxxxxxxxxxxxx>
Cc: John Spotswood <john.a.spotswood@xxxxxxxxx>
Cc: Jeff Mcgee <jeff.mcgee@xxxxxxxxx>
Reviewed-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@xxxxxxxxx>
---
drivers/gpu/drm/i915/intel_guc_fwif.h | 50 +++++++++------------------
drivers/gpu/drm/i915/intel_uc_fw.c | 20 +++++------
2 files changed, 26 insertions(+), 44 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_guc_fwif.h b/drivers/gpu/drm/i915/intel_guc_fwif.h
index b2f5148f4f17..4528e098d3a5 100644
--- a/drivers/gpu/drm/i915/intel_guc_fwif.h
+++ b/drivers/gpu/drm/i915/intel_guc_fwif.h
@@ -168,11 +168,7 @@
* in fw. So driver will load a truncated firmware in this case.
*
* HuC firmware layout is same as GuC firmware.
- *
- * HuC firmware css header is different. However, the only difference is where
- * the version information is saved. The uc_css_header is unified to support
- * both. Driver should get HuC version from uc_css_header.huc_sw_version, while
- * uc_css_header.guc_sw_version for GuC.
+ * Only HuC version information is saved in a different way.
*/
struct uc_css_header {
@@ -183,41 +179,27 @@ struct uc_css_header {
u32 header_version;
u32 module_id;
u32 module_vendor;
- union {
- struct {
- u8 day;
- u8 month;
- u16 year;
- };
- u32 date;
- };
+ u32 date;
+#define CSS_DATE_DAY (0xFF << 0)
+#define CSS_DATE_MONTH (0xFF << 8)
+#define CSS_DATE_YEAR (0xFFFF << 16)
u32 size_dw; /* uCode plus header_size_dw */
u32 key_size_dw;
u32 modulus_size_dw;
u32 exponent_size_dw;
- union {
- struct {
- u8 hour;
- u8 min;
- u16 sec;
- };
- u32 time;
- };
-
+ u32 time;
+#define CSS_TIME_HOUR (0xFF << 0)
+#define CSS_DATE_MIN (0xFF << 8)
+#define CSS_DATE_SEC (0xFFFF << 16)
char username[8];
char buildnumber[12];
- union {
- struct {
- u32 branch_client_version;
- u32 sw_version;
- } guc;
- struct {
- u32 sw_version;
- u32 reserved;
- } huc;
- };
- u32 prod_preprod_fw;
- u32 reserved[12];
+ u32 sw_version;
+#define CSS_SW_VERSION_GUC_MAJOR (0xFF << 16)
+#define CSS_SW_VERSION_GUC_MINOR (0xFF << 8)
+#define CSS_SW_VERSION_GUC_PATCH (0xFF << 0)
+#define CSS_SW_VERSION_HUC_MAJOR (0xFFFF << 16)
+#define CSS_SW_VERSION_HUC_MINOR (0xFFFF << 0)
+ u32 reserved[14];
u32 header_info;
} __packed;
diff --git a/drivers/gpu/drm/i915/intel_uc_fw.c b/drivers/gpu/drm/i915/intel_uc_fw.c
index becf05ebae4d..957c1feb30d3 100644
--- a/drivers/gpu/drm/i915/intel_uc_fw.c
+++ b/drivers/gpu/drm/i915/intel_uc_fw.c
@@ -22,6 +22,7 @@
*
*/
+#include <linux/bitfield.h>
#include <linux/firmware.h>
#include <drm/drm_print.h>
@@ -119,21 +120,20 @@ void intel_uc_fw_fetch(struct drm_i915_private *dev_priv,
goto fail;
}
- /*
- * The GuC firmware image has the version number embedded at a
- * well-known offset within the firmware blob; note that major / minor
- * version are TWO bytes each (i.e. u16), although all pointers and
- * offsets are defined in terms of bytes (u8).
- */
+ /* Get version numbers from the CSS header */
switch (uc_fw->type) {
case INTEL_UC_FW_TYPE_GUC:
- uc_fw->major_ver_found = css->guc.sw_version >> 16;
- uc_fw->minor_ver_found = css->guc.sw_version & 0xFFFF;
+ uc_fw->major_ver_found = FIELD_GET(CSS_SW_VERSION_GUC_MAJOR,
+ css->sw_version);
+ uc_fw->minor_ver_found = FIELD_GET(CSS_SW_VERSION_GUC_MINOR,
+ css->sw_version);
break;
case INTEL_UC_FW_TYPE_HUC:
- uc_fw->major_ver_found = css->huc.sw_version >> 16;
- uc_fw->minor_ver_found = css->huc.sw_version & 0xFFFF;
+ uc_fw->major_ver_found = FIELD_GET(CSS_SW_VERSION_HUC_MAJOR,
+ css->sw_version);
+ uc_fw->minor_ver_found = FIELD_GET(CSS_SW_VERSION_HUC_MINOR,
+ css->sw_version);
break;
default:
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