On Thu, 14 Dec 2017 23:30:56 +0100, Srivatsa, Anusha
<anusha.sriva...@intel.com> wrote:
-----Original Message-----
From: Wajdeczko, Michal
Sent: Thursday, December 14, 2017 2:18 PM
To: intel-gfx@lists.freedesktop.org; Srivatsa, Anusha
<anusha.sriva...@intel.com>
Cc: Vivi, Rodrigo <rodrigo.v...@intel.com>
Subject: Re: [Intel-gfx] [PATCH] drm/i915/glk: Disable Guc and HuC on
GLK
On Thu, 14 Dec 2017 22:58:37 +0100, Anusha Srivatsa
<anusha.sriva...@intel.com> wrote:
Since the firmwares are released yet to public repo, disable them on
Geminilake.
Cc: Rodrigo Vivi <rodrigo.v...@intel.com>
Signed-off-by: Anusha Srivatsa <anusha.sriva...@intel.com>
---
drivers/gpu/drm/i915/i915_pci.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/gpu/drm/i915/i915_pci.c
b/drivers/gpu/drm/i915/i915_pci.c index fa67d3d..ddf7530 100644
--- a/drivers/gpu/drm/i915/i915_pci.c
+++ b/drivers/gpu/drm/i915/i915_pci.c
@@ -521,6 +521,11 @@ static const struct intel_device_info
intel_geminilake_info __initconst = {
GEN9_LP_FEATURES,
.platform = INTEL_GEMINILAKE,
.ddb_size = 1024,
+ /* FIXME Geminilake supports GuC but currently firmwares
+ * have not made it to public repo. Lets disable the support
+ * as a temporary fix.
+ */
+ .has_guc = 0,
Maybe better place to put this fix is __get_platform_enable_guc() like
in [1] [1]
https://patchwork.freedesktop.org/patch/192006/
Michal,
Hmm the reference patch is controlling guc/huc through a module
parameter but wont the above approach be neater platform wise?
With your patch it would be impossible to check even preliminary
firmwares from non-public repo without recompilation of the driver.
While with variant below it would just require changing modparams like:
enable_guc=1
guc_firmware_path=preliminary/glk.bin
Note that auto mode (enable_guc=-1) will still keep GuC disabled for GLK.
Michal
Anusha
diff --git a/drivers/gpu/drm/i915/intel_uc.c
b/drivers/gpu/drm/i915/intel_uc.c
index 49bccc9..22b0afe 100644
--- a/drivers/gpu/drm/i915/intel_uc.c
+++ b/drivers/gpu/drm/i915/intel_uc.c
@@ -60,6 +60,8 @@ static int __get_platform_enable_guc(struct
drm_i915_private *dev_priv)
enable_guc |= ENABLE_GUC_LOAD_HUC;
/* Any platform specific fine-tuning can be done here */
+ if (IS_GEMINILAKE(dev_priv))
+ enable_guc = 0; /* no firmware on CI machines */
return enable_guc;
}
GLK_COLORS,
};
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