[Intel-gfx] [PATCH v3 2/3] drm/i915/uc: Add patch level version number support

John.C.Harrison
2022-08-27T01:17:32Z

From: John Harrison <John.C.Harrison@Intel.com>

With the move to un-versioned filenames, it becomes more difficult to
know exactly what version of a given firmware is being used. So add
the patch level version number to the debugfs output.

Also, support matching by patch level when selecting code paths for
firmware compatibility. While a patch level change cannot be backwards
breaking, it is potentially possible that a new feature only works
from a given patch level onwards (even though it was theoretically
added in an earlier version that bumped the major or minor version).

Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
---
.../gpu/drm/i915/gt/uc/intel_guc_submission.c | 10 +++---
drivers/gpu/drm/i915/gt/uc/intel_uc.c | 6 ++--
drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c | 36 ++++++++++++++-----
drivers/gpu/drm/i915/gt/uc/intel_uc_fw.h | 6 ++++
drivers/gpu/drm/i915/gt/uc/intel_uc_fw_abi.h | 8 +++--
5 files changed, 47 insertions(+), 19 deletions(-)

diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
index 04393932623c7..64c4e83153f47 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
@@ -1868,7 +1868,7 @@ int intel_guc_submission_init(struct intel_guc *guc)
if (guc->submission_initialized)
return 0;

- if (guc->fw.file_selected.major_ver < 70) {
+ if (GET_UC_VER(guc) < MAKE_UC_VER(70, 0, 0)) {
ret = guc_lrc_desc_pool_create_v69(guc);
if (ret)
return ret;
@@ -2303,7 +2303,7 @@ static int register_context(struct intel_context *ce, bool loop)
GEM_BUG_ON(intel_context_is_child(ce));
trace_intel_context_register(ce);

- if (guc->fw.file_selected.major_ver >= 70)
+ if (GET_UC_VER(guc) >= MAKE_UC_VER(70, 0, 0))
ret = register_context_v70(guc, ce, loop);
else
ret = register_context_v69(guc, ce, loop);
@@ -2315,7 +2315,7 @@ static int register_context(struct intel_context *ce, bool loop)
set_context_registered(ce);
spin_unlock_irqrestore(&ce->guc_state.lock, flags);

- if (guc->fw.file_selected.major_ver >= 70)
+ if (GET_UC_VER(guc) >= MAKE_UC_VER(70, 0, 0))
guc_context_policy_init_v70(ce, loop);
}

@@ -2921,7 +2921,7 @@ static void __guc_context_set_preemption_timeout(struct intel_guc *guc,
u16 guc_id,
u32 preemption_timeout)
{
- if (guc->fw.file_selected.major_ver >= 70) {
+ if (GET_UC_VER(guc) >= MAKE_UC_VER(70, 0, 0)) {
struct context_policy policy;

__guc_context_policy_start_klv(&policy, guc_id);
@@ -3186,7 +3186,7 @@ static int guc_context_alloc(struct intel_context *ce)
static void __guc_context_set_prio(struct intel_guc *guc,
struct intel_context *ce)
{
- if (guc->fw.file_selected.major_ver >= 70) {
+ if (GET_UC_VER(guc) >= MAKE_UC_VER(70, 0, 0)) {
struct context_policy policy;

__guc_context_policy_start_klv(&policy, ce->guc_id.id);
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_uc.c b/drivers/gpu/drm/i915/gt/uc/intel_uc.c
index d965ac4832d60..abf4e142596d0 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_uc.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_uc.c
@@ -435,9 +435,11 @@ static void print_fw_ver(struct intel_uc *uc, struct intel_uc_fw *fw)
{
struct drm_i915_private *i915 = uc_to_gt(uc)->i915;

- drm_info(&i915->drm, "%s firmware %s version %u.%u\n",
+ drm_info(&i915->drm, "%s firmware %s version %u.%u.%u\n",
intel_uc_fw_type_repr(fw->type), fw->file_selected.path,
- fw->file_selected.major_ver, fw->file_selected.minor_ver);
+ fw->file_selected.major_ver,
+ fw->file_selected.minor_ver,
+ fw->file_selected.patch_ver);
}

static int __uc_init_hw(struct intel_uc *uc)
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c b/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c
index 610f36f1b989a..af425916cdf64 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c
@@ -447,10 +447,12 @@ static int check_gsc_manifest(const struct firmware *fw,
struct intel_uc_fw *uc_fw)
{
u32 *dw = (u32 *)fw->data;
- u32 version = dw[HUC_GSC_VERSION_DW];
+ u32 version_hi = dw[HUC_GSC_VERSION_HI_DW];
+ u32 version_lo = dw[HUC_GSC_VERSION_LO_DW];

- uc_fw->file_selected.major_ver = FIELD_GET(HUC_GSC_MAJOR_VER_MASK, version);
- uc_fw->file_selected.minor_ver = FIELD_GET(HUC_GSC_MINOR_VER_MASK, version);
+ uc_fw->file_selected.major_ver = FIELD_GET(HUC_GSC_MAJOR_VER_HI_MASK, version_hi);
+ uc_fw->file_selected.minor_ver = FIELD_GET(HUC_GSC_MINOR_VER_HI_MASK, version_hi);
+ uc_fw->file_selected.patch_ver = FIELD_GET(HUC_GSC_PATCH_VER_LO_MASK, version_lo);

return 0;
}
@@ -512,6 +514,8 @@ static int check_ccs_header(struct drm_i915_private *i915,
css->sw_version);
uc_fw->file_selected.minor_ver = FIELD_GET(CSS_SW_VERSION_UC_MINOR,
css->sw_version);
+ uc_fw->file_selected.patch_ver = FIELD_GET(CSS_SW_VERSION_UC_PATCH,
+ css->sw_version);

if (uc_fw->type == INTEL_UC_FW_TYPE_GUC)
uc_fw->private_data_size = css->private_data_size;
@@ -1000,6 +1004,8 @@ size_t intel_uc_fw_copy_rsa(struct intel_uc_fw *uc_fw, void *dst, u32 max_len)
*/
void intel_uc_fw_dump(const struct intel_uc_fw *uc_fw, struct drm_printer *p)
{
+ u32 ver_sel, ver_want;
+
drm_printf(p, "%s firmware: %s\n",
intel_uc_fw_type_repr(uc_fw->type), uc_fw->file_selected.path);
if (uc_fw->file_selected.path != uc_fw->file_wanted.path)
@@ -1007,13 +1013,25 @@ void intel_uc_fw_dump(const struct intel_uc_fw *uc_fw, struct drm_printer *p)
intel_uc_fw_type_repr(uc_fw->type), uc_fw->file_wanted.path);
drm_printf(p, "\tstatus: %s\n",
intel_uc_fw_status_repr(uc_fw->status));
- if (uc_fw->file_wanted.major_ver)
- drm_printf(p, "\tversion: wanted %u.%u, found %u.%u\n",
- uc_fw->file_wanted.major_ver, uc_fw->file_wanted.minor_ver,
- uc_fw->file_selected.major_ver, uc_fw->file_selected.minor_ver);
+ ver_sel = MAKE_UC_VER(uc_fw->file_selected.major_ver,
+ uc_fw->file_selected.minor_ver,
+ uc_fw->file_selected.patch_ver);
+ ver_want = MAKE_UC_VER(uc_fw->file_wanted.major_ver,
+ uc_fw->file_wanted.minor_ver,
+ uc_fw->file_wanted.patch_ver);
+ if (ver_sel < ver_want)
+ drm_printf(p, "\tversion: wanted %u.%u.%u, found %u.%u.%u\n",
+ uc_fw->file_wanted.major_ver,
+ uc_fw->file_wanted.minor_ver,
+ uc_fw->file_wanted.patch_ver,
+ uc_fw->file_selected.major_ver,
+ uc_fw->file_selected.minor_ver,
+ uc_fw->file_selected.patch_ver);
else
- drm_printf(p, "\tversion: found %u.%u\n",
- uc_fw->file_selected.major_ver, uc_fw->file_selected.minor_ver);
+ drm_printf(p, "\tversion: found %u.%u.%u\n",
+ uc_fw->file_selected.major_ver,
+ uc_fw->file_selected.minor_ver,
+ uc_fw->file_selected.patch_ver);
drm_printf(p, "\tuCode: %u bytes\n", uc_fw->ucode_size);
drm_printf(p, "\tRSA: %u bytes\n", uc_fw->rsa_size);
}
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.h b/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.h
index 344763c942e37..cb586f7df270b 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.h
+++ b/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.h
@@ -73,6 +73,7 @@ struct intel_uc_fw_file {
const char *path;
u16 major_ver;
u16 minor_ver;
+ u16 patch_ver;
};

/*
@@ -108,6 +109,11 @@ struct intel_uc_fw {
bool loaded_via_gsc;
};

+#define MAKE_UC_VER(maj, min, pat) ((pat) | ((min) << 8) | ((maj) << 16))
+#define GET_UC_VER(uc) (MAKE_UC_VER((uc)->fw.file_selected.major_ver, \
+ (uc)->fw.file_selected.minor_ver, \
+ (uc)->fw.file_selected.patch_ver))
+
#ifdef CONFIG_DRM_I915_DEBUG_GUC
void intel_uc_fw_change_status(struct intel_uc_fw *uc_fw,
enum intel_uc_fw_status status);
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_uc_fw_abi.h b/drivers/gpu/drm/i915/gt/uc/intel_uc_fw_abi.h
index b05e0e35b734c..7a411178bdbf2 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_uc_fw_abi.h
+++ b/drivers/gpu/drm/i915/gt/uc/intel_uc_fw_abi.h
@@ -83,8 +83,10 @@ struct uc_css_header {
} __packed;
static_assert(sizeof(struct uc_css_header) == 128);

-#define HUC_GSC_VERSION_DW 44
-#define HUC_GSC_MAJOR_VER_MASK (0xFF << 0)
-#define HUC_GSC_MINOR_VER_MASK (0xFF << 16)
+#define HUC_GSC_VERSION_HI_DW 44
+#define HUC_GSC_MAJOR_VER_HI_MASK (0xFF << 0)
+#define HUC_GSC_MINOR_VER_HI_MASK (0xFF << 16)
+#define HUC_GSC_VERSION_LO_DW 45
+#define HUC_GSC_PATCH_VER_LO_MASK (0xFF << 0)

#endif /* _INTEL_UC_FW_ABI_H */
--
2.37.2