[PATCH] drm/i915/dmc: Step away from symbolic links

Patrik Jakobsson
2016-05-10T11:58:46Z

Load specific firmware versions for the DMC instead of using symbolic
links. The currently recommended versions are: SKL 1.26, KBL 1.01 and
BXT 1.07.

Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Imre Deak <imre.deak@intel.com>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Signed-off-by: Patrik Jakobsson <patrik.jakobsson@linux.intel.com>
---
drivers/gpu/drm/i915/intel_csr.c | 29 ++++++++++++++---------------
1 file changed, 14 insertions(+), 15 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_csr.c b/drivers/gpu/drm/i915/intel_csr.c
index 2b3b428..ea047cd 100644
--- a/drivers/gpu/drm/i915/intel_csr.c
+++ b/drivers/gpu/drm/i915/intel_csr.c
@@ -41,15 +41,15 @@
* be moved to FW_FAILED.
*/

-#define I915_CSR_KBL "i915/kbl_dmc_ver1.bin"
+#define I915_CSR_KBL "i915/kbl_dmc_ver1_01.bin"
MODULE_FIRMWARE(I915_CSR_KBL);
#define KBL_CSR_VERSION_REQUIRED CSR_VERSION(1, 1)

-#define I915_CSR_SKL "i915/skl_dmc_ver1.bin"
+#define I915_CSR_SKL "i915/skl_dmc_ver1_26.bin"
MODULE_FIRMWARE(I915_CSR_SKL);
-#define SKL_CSR_VERSION_REQUIRED CSR_VERSION(1, 23)
+#define SKL_CSR_VERSION_REQUIRED CSR_VERSION(1, 26)

-#define I915_CSR_BXT "i915/bxt_dmc_ver1.bin"
+#define I915_CSR_BXT "i915/bxt_dmc_ver1_07.bin"
MODULE_FIRMWARE(I915_CSR_BXT);
#define BXT_CSR_VERSION_REQUIRED CSR_VERSION(1, 7)

@@ -286,7 +286,7 @@ static uint32_t *parse_csr_fw(struct drm_i915_private *dev_priv,
uint32_t dmc_offset = CSR_DEFAULT_FW_OFFSET, readcount = 0, nbytes;
uint32_t i;
uint32_t *dmc_payload;
- uint32_t required_min_version;
+ uint32_t required_version;

if (!fw)
return NULL;
@@ -303,24 +303,23 @@ static uint32_t *parse_csr_fw(struct drm_i915_private *dev_priv,
csr->version = css_header->version;

if (IS_KABYLAKE(dev_priv)) {
- required_min_version = KBL_CSR_VERSION_REQUIRED;
+ required_version = KBL_CSR_VERSION_REQUIRED;
} else if (IS_SKYLAKE(dev_priv)) {
- required_min_version = SKL_CSR_VERSION_REQUIRED;
+ required_version = SKL_CSR_VERSION_REQUIRED;
} else if (IS_BROXTON(dev_priv)) {
- required_min_version = BXT_CSR_VERSION_REQUIRED;
+ required_version = BXT_CSR_VERSION_REQUIRED;
} else {
MISSING_CASE(INTEL_REVID(dev_priv));
- required_min_version = 0;
+ required_version = 0;
}

- if (csr->version < required_min_version) {
- DRM_INFO("Refusing to load old DMC firmware v%u.%u,"
- " please upgrade to v%u.%u or later"
- " [" FIRMWARE_URL "].\n",
+ if (csr->version != required_version) {
+ DRM_INFO("Refusing to load DMC firmware v%u.%u,"
+ " please use v%u.%u [" FIRMWARE_URL "].\n",
CSR_VERSION_MAJOR(csr->version),
CSR_VERSION_MINOR(csr->version),
- CSR_VERSION_MAJOR(required_min_version),
- CSR_VERSION_MINOR(required_min_version));
+ CSR_VERSION_MAJOR(required_version),
+ CSR_VERSION_MINOR(required_version));
return NULL;
}

--
2.5.0