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drm/i915/dmc: Step away from symbolic links 

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.

Certain DMC versions need workarounds in the driver which forces us to
have a tight dependency between firmware and driver. In order to be able
to provide a tested and known working configuration we must lock down on
a specific DMC firmware version.

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>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Acked-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1463391057-32350-1-git-send-email-patrik.jakobsson@linux.intel.com
This commit is contained in:
Patrik Jakobsson 2016-05-16 11:30:57 +02:00 committed by Rodrigo Vivi
parent fa7545a4ae
commit 4aa7fb9c3c
1 changed files with 14 additions and 15 deletions
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29
drivers/gpu/drm/i915/intel_csr.c
View File

@ -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;
}