HuC firmware css header has almost exactly same definition as GuC
firmware except for the sw_version. Also, add a new member fw_type
into intel_uc_fw to indicate what kind of fw it is. So, the loader
will pull right sw_version from header.
v2: rebased on-top of drm-intel-nightly
v3: rebased. Rename device_id to guc_branch_client_version,
make guc_sw_version a union. <Jeff Mcgee>. Put UC_FW_TYPE_GUC
and UC_FW_TYPE_HUC into an enum.
v4: rebased on top of drm-tip.Update dev to dev_priv in
intel_uc_fw_fetch.
v5: rebased. Add INTEL_ prefix to an enum. Add fw_type declaration
from patch 1.Combine two different unions for huc and guc version,
reserved etc into one union with two structs.
v6: rebased. Change fw_type to enum.
v7: rebased. Rename the enum fw_type to intel_uc_fw_type.
Cc: Michal Wajdeczko <michal.wajdec...@intel.com>
Tested-by: Xiang Haihao <haihao.xi...@intel.com>
Signed-off-by: Anusha Srivatsa <anusha.sriva...@intel.com>
Signed-off-by: Alex Dai <yu....@intel.com>
Signed-off-by: Peter Antoine <peter.anto...@intel.com>
Reviewed-by: Arkadiusz Hiler <arkadiusz.hi...@intel.com>
Reviewed-by: Michal Wajdeczko <michal.wajdec...@intel.com>
---
drivers/gpu/drm/i915/intel_guc_fwif.h | 23 ++++++++++++++----
drivers/gpu/drm/i915/intel_guc_loader.c | 41 ++++++++++++++++++++++-----------
drivers/gpu/drm/i915/intel_uc.h | 6 +++++
3 files changed, 53 insertions(+), 17 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_guc_fwif.h
b/drivers/gpu/drm/i915/intel_guc_fwif.h
index 3202b32..ed1ab40 100644
--- a/drivers/gpu/drm/i915/intel_guc_fwif.h
+++ b/drivers/gpu/drm/i915/intel_guc_fwif.h
@@ -145,7 +145,7 @@
* The GuC firmware layout looks like this:
*
* +-------------------------------+
- * | guc_css_header |
+ * | uc_css_header |
* | |
* | contains major/minor version |
* +-------------------------------+
@@ -172,9 +172,16 @@
* 3. Length info of each component can be found in header, in dwords.
* 4. Modulus and exponent key are not required by driver. They may not appear
* 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.
*/
-struct guc_css_header {
+struct uc_css_header {
uint32_t module_type;
/* header_size includes all non-uCode bits, including css_header, rsa
* key, modulus key and exponent data. */
@@ -205,8 +212,16 @@ struct guc_css_header {
char username[8];
char buildnumber[12];
- uint32_t device_id;
- uint32_t guc_sw_version;
+ union {
+ struct {
+ uint32_t branch_client_version;
+ uint32_t sw_version;
+ } guc;
+ struct {
+ uint32_t sw_version;
+ uint32_t reserved;
+ } huc;
+ };
uint32_t prod_preprod_fw;
uint32_t reserved[12];
uint32_t header_info;
diff --git a/drivers/gpu/drm/i915/intel_guc_loader.c
b/drivers/gpu/drm/i915/intel_guc_loader.c
index 5a2c86f..30801ee 100644
--- a/drivers/gpu/drm/i915/intel_guc_loader.c
+++ b/drivers/gpu/drm/i915/intel_guc_loader.c
@@ -595,7 +595,7 @@ void intel_uc_fw_fetch(struct drm_i915_private *dev_priv,
struct pci_dev *pdev = dev_priv->drm.pdev;
struct drm_i915_gem_object *obj;
const struct firmware *fw = NULL;
- struct guc_css_header *css;
+ struct uc_css_header *css;
size_t size;
int err;
@@ -612,19 +612,19 @@ void intel_uc_fw_fetch(struct drm_i915_private *dev_priv,
uc_fw->path, fw);
/* Check the size of the blob before examining buffer contents */
- if (fw->size < sizeof(struct guc_css_header)) {
+ if (fw->size < sizeof(struct uc_css_header)) {
DRM_NOTE("Firmware header is missing\n");
goto fail;
}
- css = (struct guc_css_header *)fw->data;
+ css = (struct uc_css_header *)fw->data;
/* Firmware bits always start from header */
uc_fw->header_offset = 0;
uc_fw->header_size = (css->header_size_dw - css->modulus_size_dw -
css->key_size_dw - css->exponent_size_dw) * sizeof(u32);
- if (uc_fw->header_size != sizeof(struct guc_css_header)) {
+ if (uc_fw->header_size != sizeof(struct uc_css_header)) {
DRM_NOTE("CSS header definition mismatch\n");
goto fail;
}
@@ -648,21 +648,36 @@ void intel_uc_fw_fetch(struct drm_i915_private *dev_priv,
goto fail;
}
- /* Header and uCode will be loaded to WOPCM. Size of the two. */
- size = uc_fw->header_size + uc_fw->ucode_size;
- if (size > guc_wopcm_size(dev_priv)) {
- DRM_NOTE("Firmware is too large to fit in WOPCM\n");
- 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).
*/
- uc_fw->major_ver_found = css->guc_sw_version >> 16;
- uc_fw->minor_ver_found = css->guc_sw_version & 0xFFFF;
+ switch (uc_fw->fw) {
+ case INTEL_UC_FW_TYPE_GUC:
+ /* Header and uCode will be loaded to WOPCM. Size of the two. */
+ size = uc_fw->header_size + uc_fw->ucode_size;
+
+ /* Top 32k of WOPCM is reserved (8K stack + 24k RC6 context). */
+ if (size > guc_wopcm_size(dev_priv)) {
+ DRM_ERROR("Firmware is too large to fit in WOPCM\n");
+ goto fail;
+ }
+ uc_fw->major_ver_found = css->guc.sw_version >> 16;
+ uc_fw->minor_ver_found = css->guc.sw_version & 0xFFFF;
+ 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;
+ break;
+
+ default:
+ DRM_ERROR("Unknown firmware type %d\n", uc_fw->fw);
+ err = -ENOEXEC;
+ goto fail;
+ }
if (uc_fw->major_ver_found != uc_fw->major_ver_wanted ||
uc_fw->minor_ver_found < uc_fw->minor_ver_wanted) {
diff --git a/drivers/gpu/drm/i915/intel_uc.h b/drivers/gpu/drm/i915/intel_uc.h
index 9bb8a1e..c2c3919 100644
--- a/drivers/gpu/drm/i915/intel_uc.h
+++ b/drivers/gpu/drm/i915/intel_uc.h
@@ -100,6 +100,11 @@ enum intel_uc_fw_status {
INTEL_UC_FIRMWARE_SUCCESS
};
+enum intel_uc_fw_type {
+ INTEL_UC_FW_TYPE_GUC,
+ INTEL_UC_FW_TYPE_HUC
+};
+
/*
* This structure encapsulates all the data needed during the process
* of fetching, caching, and loading the firmware image into the GuC.
@@ -116,6 +121,7 @@ struct intel_uc_fw {
uint16_t major_ver_found;
uint16_t minor_ver_found;
+ enum intel_uc_fw_type fw;
uint32_t header_size;
uint32_t header_offset;
uint32_t rsa_size;
--
2.7.4
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