In intel_package_header version 2 there's a new field in the
fw_info table that must be 0, otherwise it's not the correct DMC
firmware. Add a check for version 2 or later.
Signed-off-by: Lucas De Marchi <lucas.demarchi@xxxxxxxxx>
---
drivers/gpu/drm/i915/intel_csr.c | 14 +++++++++++---
1 file changed, 11 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_csr.c b/drivers/gpu/drm/i915/intel_csr.c
index b7181ca6c8f5..d4996dcf596c 100644
--- a/drivers/gpu/drm/i915/intel_csr.c
+++ b/drivers/gpu/drm/i915/intel_csr.c
@@ -120,7 +120,10 @@ struct intel_css_header {
} __packed;
struct intel_fw_info {
- u16 reserved1;
+ u8 reserved1;
+
+ /* reserved on package_header version 1, must be 0 on version 2 */
+ u8 dmc_id;
/* Stepping (A, B, C, ..., *). * is a wildcard */
char stepping;
@@ -325,12 +328,16 @@ void intel_csr_load_program(struct drm_i915_private *dev_priv)
*/
static u32 find_dmc_fw_offset(const struct intel_fw_info *fw_info,
unsigned int num_entries,
- const struct stepping_info *si)
+ const struct stepping_info *si,
+ u8 package_ver)
{
u32 dmc_offset = CSR_DEFAULT_FW_OFFSET;
unsigned int i;
for (i = 0; i < num_entries; i++) {
+ if (package_ver > 1 && fw_info[i].dmc_id != 0)
+ continue;
+
if (fw_info[i].substepping == '*' &&
si->stepping == fw_info[i].stepping) {
dmc_offset = fw_info[i].offset;
@@ -501,7 +508,8 @@ parse_csr_fw_package(struct intel_csr *csr,
fw_info = (const struct intel_fw_info *)
((u8 *)package_header + sizeof(*package_header));
- dmc_offset = find_dmc_fw_offset(fw_info, num_entries, si);
+ dmc_offset = find_dmc_fw_offset(fw_info, num_entries, si,
+ package_header->header_ver);
if (dmc_offset == CSR_DEFAULT_FW_OFFSET) {
DRM_ERROR("DMC firmware not supported for %c stepping\n",
si->stepping);
--
2.21.0
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