I've already did, but honestly have no idea what you do here.
ASIC post is not something I've every worked on.
It looks odd that you add/remove some static keyword here, but I can't
judge the technical correctness.
Monk, Alex what do you think of this?
Sorry,
Christian.
Am 18.10.2017 um 09:19 schrieb Ding, Pixel:
Hi Christian,
Would you please take a look at this change? It’s to unify the VBIOS post
checking.
—
Sincerely Yours,
Pixel
On 18/10/2017, 10:25 AM, "Ding, Pixel" <[email protected]> wrote:
Hi all,
Could someone review this patch?
—
Sincerely Yours,
Pixel
On 17/10/2017, 4:06 PM, "amd-gfx on behalf of Ding, Pixel"
<[email protected] on behalf of [email protected]> wrote:
you can see the difference of function amdgpu_need_post. Generally speaking,
there were 2 functions to check VBIOS posting, one considers VF and passthru
while the other doesn’t. In fact we should always consider VF and PT for
checking, right? For example, this checking here believe VF needs a posting
because SCRATCH registers are not the expected value. Is it clear?
—
Sincerely Yours,
Pixel
On 17/10/2017, 5:00 PM, "Liu, Monk" <[email protected]> wrote:
>From the patch itself I still couldn't tell the difference
-----Original Message-----
From: Ding, Pixel
Sent: 2017年10月17日 15:54
To: Liu, Monk <[email protected]>; [email protected]; Koenig, Christian
<[email protected]>
Cc: Li, Bingley <[email protected]>; Sun, Gary <[email protected]>
Subject: Re: [PATCH 1/3] drm/amdgpu: always consider virualised device for
checking post
It fixes a issue hidden in:
95 static bool igp_read_bios_from_vram(struct amdgpu_device *adev)
96 {
97 uint8_t __iomem *bios;
98 resource_size_t vram_base;
99 resource_size_t size = 256 * 1024; /* ??? */
100
101 if (!(adev->flags & AMD_IS_APU))
102 if (amdgpu_need_post(adev))
103 return false;
This makes bios reading fallback to SMC INDEX/DATA register case.
—
Sincerely Yours,
Pixel
On 17/10/2017, 3:48 PM, "Liu, Monk" <[email protected]> wrote:
I don't understand how this patch works??? Looks like just rename vpost_needed
to check_post
-----Original Message-----
From: Pixel Ding [mailto:[email protected]]
Sent: 2017年10月17日 14:38
To: [email protected]; Liu, Monk <[email protected]>; Koenig, Christian
<[email protected]>
Cc: Li, Bingley <[email protected]>; Sun, Gary <[email protected]>; Ding, Pixel
<[email protected]>
Subject: [PATCH 1/3] drm/amdgpu: always consider virualised device for checking
post
From: pding <[email protected]>
The post checking on scratch registers isn't reliable for virtual function.
Signed-off-by: pding <[email protected]>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 683965b..ab8f0d6 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -669,7 +669,7 @@ void amdgpu_gart_location(struct amdgpu_device *adev,
struct amdgpu_mc *mc)
* or post is needed if hw reset is performed.
* Returns true if need or false if not.
*/
-bool amdgpu_need_post(struct amdgpu_device *adev)
+static bool amdgpu_check_post(struct amdgpu_device *adev)
{
uint32_t reg;
@@ -692,7 +692,7 @@ bool amdgpu_need_post(struct amdgpu_device *adev)
}
-static bool amdgpu_vpost_needed(struct amdgpu_device *adev)
+bool amdgpu_need_post(struct amdgpu_device *adev)
{
if (amdgpu_sriov_vf(adev))
return false;
@@ -716,7 +716,7 @@ static bool amdgpu_vpost_needed(struct amdgpu_device *adev)
return true;
}
}
- return amdgpu_need_post(adev);
+ return amdgpu_check_post(adev);
}
/**
@@ -2208,7 +2208,7 @@ int amdgpu_device_init(struct amdgpu_device *adev,
amdgpu_device_detect_sriov_bios(adev);
/* Post card if necessary */
- if (amdgpu_vpost_needed(adev)) {
+ if (amdgpu_need_post(adev)) {
if (!adev->bios) {
dev_err(adev->dev, "no vBIOS found\n");
amdgpu_vf_error_put(AMDGIM_ERROR_VF_NO_VBIOS, 0, 0);
--
2.9.5
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