[PATCH AUTOSEL 6.4 07/11] drm/amd/pm: skip the RLC stop when S0i3 suspend for SMU v13.0.4/11

[PATCH AUTOSEL 6.4 07/11] drm/amd/pm: skip the RLC stop when S0i3 suspend for SMU v13.0.4/11

[Sasha Levin]

From: Tim Huang <Tim.Huang@amd.com>

[ Upstream commit 730d44e1fa306a20746ad4a85da550662aed9daa ]

For SMU v13.0.4/11, driver does not need to stop RLC for S0i3,
the firmwares will handle that properly.

Signed-off-by: Tim Huang <Tim.Huang@amd.com>
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
index ea03e8d9a3f6c..818379276a582 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
@@ -1573,9 +1573,9 @@ static int smu_disable_dpms(struct smu_context *smu)
 
 	/*
 	 * For SMU 13.0.4/11, PMFW will handle the features disablement properly
-	 * for gpu reset case. Driver involvement is unnecessary.
+	 * for gpu reset and S0i3 cases. Driver involvement is unnecessary.
 	 */
-	if (amdgpu_in_reset(adev)) {
+	if (amdgpu_in_reset(adev) || adev->in_s0ix) {
 		switch (adev->ip_versions[MP1_HWIP][0]) {
 		case IP_VERSION(13, 0, 4):
 		case IP_VERSION(13, 0, 11):
-- 
2.40.1

[PATCH AUTOSEL 6.4 08/11] drm/amdgpu: Match against exact bootloader status

[Sasha Levin]

From: Lijo Lazar <lijo.lazar@amd.com>

[ Upstream commit d3de41ee5febe5c2d9989fe9810bce2bb54a3a8e ]

On PSP v13.x ASICs, boot loader will set only the MSB to 1 and clear the
least significant bits for any command submission. Hence match against
the exact register value, otherwise a register value of all 0xFFs also
could falsely indicate that boot loader is ready. Also, from PSP v13.0.6
and newer, bits[7:0] will be used to indicate command error status.

Signed-off-by: Lijo Lazar <lijo.lazar@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/gpu/drm/amd/amdgpu/psp_v13_0.c | 15 ++++++++-------
 1 file changed, 8 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/psp_v13_0.c b/drivers/gpu/drm/amd/amdgpu/psp_v13_0.c
index caee76ab71105..92f2ee412908d 100644
--- a/drivers/gpu/drm/amd/amdgpu/psp_v13_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/psp_v13_0.c
@@ -136,14 +136,15 @@ static int psp_v13_0_wait_for_bootloader(struct psp_context *psp)
 	int ret;
 	int retry_loop;
 
+	/* Wait for bootloader to signify that it is ready having bit 31 of
+	 * C2PMSG_35 set to 1. All other bits are expected to be cleared.
+	 * If there is an error in processing command, bits[7:0] will be set.
+	 * This is applicable for PSP v13.0.6 and newer.
+	 */
 	for (retry_loop = 0; retry_loop < 10; retry_loop++) {
-		/* Wait for bootloader to signify that is
-		    ready having bit 31 of C2PMSG_35 set to 1 */
-		ret = psp_wait_for(psp,
-				   SOC15_REG_OFFSET(MP0, 0, regMP0_SMN_C2PMSG_35),
-				   0x80000000,
-				   0x80000000,
-				   false);
+		ret = psp_wait_for(
+			psp, SOC15_REG_OFFSET(MP0, 0, regMP0_SMN_C2PMSG_35),
+			0x80000000, 0xffffffff, false);
 
 		if (ret == 0)
 			return 0;
-- 
2.40.1

[PATCH AUTOSEL 6.4 09/11] drm/amdkfd: ignore crat by default

[Sasha Levin]

From: Alex Deucher <alexander.deucher@amd.com>

[ Upstream commit a6dea2d64ff92851e68cd4e20a35f6534286e016 ]

We are dropping the IOMMUv2 path, so no need to enable this.
It's often buggy on consumer platforms anyway.

Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Tested-by: Mike Lothian <mike@fireburn.co.uk>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/gpu/drm/amd/amdkfd/kfd_crat.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_crat.c b/drivers/gpu/drm/amd/amdkfd/kfd_crat.c
index 475e470273540..ee0cc35d68a84 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_crat.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_crat.c
@@ -1543,11 +1543,7 @@ static bool kfd_ignore_crat(void)
 	if (ignore_crat)
 		return true;
 
-#ifndef KFD_SUPPORT_IOMMU_V2
 	ret = true;
-#else
-	ret = false;
-#endif
 
 	return ret;
 }
-- 
2.40.1

RE: [PATCH AUTOSEL 6.4 09/11] drm/amdkfd: ignore crat by default

[Deucher, Alexander]

[Public]

> -----Original Message-----
> From: Sasha Levin <sashal@kernel.org>
> Sent: Tuesday, August 22, 2023 7:36 AM
> To: linux-kernel@vger.kernel.org; stable@vger.kernel.org
> Cc: Deucher, Alexander <Alexander.Deucher@amd.com>; Kuehling, Felix
> <Felix.Kuehling@amd.com>; Koenig, Christian <Christian.Koenig@amd.com>;
> Mike Lothian <mike@fireburn.co.uk>; Sasha Levin <sashal@kernel.org>; Pan,
> Xinhui <Xinhui.Pan@amd.com>; airlied@gmail.com; daniel@ffwll.ch; amd-
> gfx@lists.freedesktop.org; dri-devel@lists.freedesktop.org
> Subject: [PATCH AUTOSEL 6.4 09/11] drm/amdkfd: ignore crat by default
>
> From: Alex Deucher <alexander.deucher@amd.com>
>
> [ Upstream commit a6dea2d64ff92851e68cd4e20a35f6534286e016 ]
>
> We are dropping the IOMMUv2 path, so no need to enable this.
> It's often buggy on consumer platforms anyway.
>

This is not needed for stable.

Alex


> Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
> Acked-by: Christian König <christian.koenig@amd.com>
> Tested-by: Mike Lothian <mike@fireburn.co.uk>
> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
> Signed-off-by: Sasha Levin <sashal@kernel.org>
> ---
>  drivers/gpu/drm/amd/amdkfd/kfd_crat.c | 4 ----
>  1 file changed, 4 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_crat.c
> b/drivers/gpu/drm/amd/amdkfd/kfd_crat.c
> index 475e470273540..ee0cc35d68a84 100644
> --- a/drivers/gpu/drm/amd/amdkfd/kfd_crat.c
> +++ b/drivers/gpu/drm/amd/amdkfd/kfd_crat.c
> @@ -1543,11 +1543,7 @@ static bool kfd_ignore_crat(void)
>       if (ignore_crat)
>               return true;
>
> -#ifndef KFD_SUPPORT_IOMMU_V2
>       ret = true;
> -#else
> -     ret = false;
> -#endif
>
>       return ret;
>  }
> --
> 2.40.1

Re: [PATCH AUTOSEL 6.4 09/11] drm/amdkfd: ignore crat by default

[Sasha Levin]

On Tue, Aug 22, 2023 at 03:41:17PM +0000, Deucher, Alexander wrote:
>[Public]
>
>> -----Original Message-----
>> From: Sasha Levin <sashal@kernel.org>
>> Sent: Tuesday, August 22, 2023 7:36 AM
>> To: linux-kernel@vger.kernel.org; stable@vger.kernel.org
>> Cc: Deucher, Alexander <Alexander.Deucher@amd.com>; Kuehling, Felix
>> <Felix.Kuehling@amd.com>; Koenig, Christian <Christian.Koenig@amd.com>;
>> Mike Lothian <mike@fireburn.co.uk>; Sasha Levin <sashal@kernel.org>; Pan,
>> Xinhui <Xinhui.Pan@amd.com>; airlied@gmail.com; daniel@ffwll.ch; amd-
>> gfx@lists.freedesktop.org; dri-devel@lists.freedesktop.org
>> Subject: [PATCH AUTOSEL 6.4 09/11] drm/amdkfd: ignore crat by default
>>
>> From: Alex Deucher <alexander.deucher@amd.com>
>>
>> [ Upstream commit a6dea2d64ff92851e68cd4e20a35f6534286e016 ]
>>
>> We are dropping the IOMMUv2 path, so no need to enable this.
>> It's often buggy on consumer platforms anyway.
>>
>
>This is not needed for stable.

I'll drop all the patches you've pointed out, thanks!

-- 
Thanks,
Sasha

[PATCH AUTOSEL 6.4 10/11] drm/amdkfd: disable IOMMUv2 support for KV/CZ

[Sasha Levin]

From: Alex Deucher <alexander.deucher@amd.com>

[ Upstream commit 616f92d188ee7142a95a52068efdbea82645f859 ]

Use the dGPU path instead.  There were a lot of platform
issues with IOMMU in general on these chips due to windows
not enabling IOMMU at the time.  The dGPU path has been
used for a long time with newer APUs and works fine.  This
also paves the way to simplify the driver significantly.

v2: use the dGPU queue manager functions

Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Tested-by: Mike Lothian <mike@fireburn.co.uk>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/gpu/drm/amd/amdkfd/kfd_device.c               | 6 ------
 drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c | 8 +-------
 2 files changed, 1 insertion(+), 13 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device.c b/drivers/gpu/drm/amd/amdkfd/kfd_device.c
index 00f528eb98126..9c8197573dee7 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_device.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_device.c
@@ -224,10 +224,6 @@ static void kfd_device_info_init(struct kfd_dev *kfd,
 		    asic_type != CHIP_TONGA)
 			kfd->device_info.supports_cwsr = true;
 
-		if (asic_type == CHIP_KAVERI ||
-		    asic_type == CHIP_CARRIZO)
-			kfd->device_info.needs_iommu_device = true;
-
 		if (asic_type != CHIP_HAWAII && !vf)
 			kfd->device_info.needs_pci_atomics = true;
 	}
@@ -240,7 +236,6 @@ struct kfd_dev *kgd2kfd_probe(struct amdgpu_device *adev, bool vf)
 	uint32_t gfx_target_version = 0;
 
 	switch (adev->asic_type) {
-#ifdef KFD_SUPPORT_IOMMU_V2
 #ifdef CONFIG_DRM_AMDGPU_CIK
 	case CHIP_KAVERI:
 		gfx_target_version = 70000;
@@ -253,7 +248,6 @@ struct kfd_dev *kgd2kfd_probe(struct amdgpu_device *adev, bool vf)
 		if (!vf)
 			f2g = &gfx_v8_kfd2kgd;
 		break;
-#endif
 #ifdef CONFIG_DRM_AMDGPU_CIK
 	case CHIP_HAWAII:
 		gfx_target_version = 70001;
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
index 7a95698d83f73..c73417e79745e 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
@@ -2335,18 +2335,12 @@ struct device_queue_manager *device_queue_manager_init(struct kfd_dev *dev)
 	}
 
 	switch (dev->adev->asic_type) {
-	case CHIP_CARRIZO:
-		device_queue_manager_init_vi(&dqm->asic_ops);
-		break;
-
 	case CHIP_KAVERI:
-		device_queue_manager_init_cik(&dqm->asic_ops);
-		break;
-
 	case CHIP_HAWAII:
 		device_queue_manager_init_cik_hawaii(&dqm->asic_ops);
 		break;
 
+	case CHIP_CARRIZO:
 	case CHIP_TONGA:
 	case CHIP_FIJI:
 	case CHIP_POLARIS10:
-- 
2.40.1

RE: [PATCH AUTOSEL 6.4 10/11] drm/amdkfd: disable IOMMUv2 support for KV/CZ

[Deucher, Alexander]

[Public]

> -----Original Message-----
> From: Sasha Levin <sashal@kernel.org>
> Sent: Tuesday, August 22, 2023 7:36 AM
> To: linux-kernel@vger.kernel.org; stable@vger.kernel.org
> Cc: Deucher, Alexander <Alexander.Deucher@amd.com>; Kuehling, Felix
> <Felix.Kuehling@amd.com>; Koenig, Christian <Christian.Koenig@amd.com>;
> Mike Lothian <mike@fireburn.co.uk>; Sasha Levin <sashal@kernel.org>; Pan,
> Xinhui <Xinhui.Pan@amd.com>; airlied@gmail.com; daniel@ffwll.ch; amd-
> gfx@lists.freedesktop.org; dri-devel@lists.freedesktop.org
> Subject: [PATCH AUTOSEL 6.4 10/11] drm/amdkfd: disable IOMMUv2
> support for KV/CZ
>
> From: Alex Deucher <alexander.deucher@amd.com>
>
> [ Upstream commit 616f92d188ee7142a95a52068efdbea82645f859 ]
>
> Use the dGPU path instead.  There were a lot of platform issues with IOMMU
> in general on these chips due to windows not enabling IOMMU at the time.
> The dGPU path has been used for a long time with newer APUs and works
> fine.  This also paves the way to simplify the driver significantly.
>
> v2: use the dGPU queue manager functions

This is not needed for stable.

Alex

>
> Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
> Acked-by: Christian König <christian.koenig@amd.com>
> Tested-by: Mike Lothian <mike@fireburn.co.uk>
> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
> Signed-off-by: Sasha Levin <sashal@kernel.org>
> ---
>  drivers/gpu/drm/amd/amdkfd/kfd_device.c               | 6 ------
>  drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c | 8 +-------
>  2 files changed, 1 insertion(+), 13 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device.c
> b/drivers/gpu/drm/amd/amdkfd/kfd_device.c
> index 00f528eb98126..9c8197573dee7 100644
> --- a/drivers/gpu/drm/amd/amdkfd/kfd_device.c
> +++ b/drivers/gpu/drm/amd/amdkfd/kfd_device.c
> @@ -224,10 +224,6 @@ static void kfd_device_info_init(struct kfd_dev *kfd,
>                   asic_type != CHIP_TONGA)
>                       kfd->device_info.supports_cwsr = true;
>
> -             if (asic_type == CHIP_KAVERI ||
> -                 asic_type == CHIP_CARRIZO)
> -                     kfd->device_info.needs_iommu_device = true;
> -
>               if (asic_type != CHIP_HAWAII && !vf)
>                       kfd->device_info.needs_pci_atomics = true;
>       }
> @@ -240,7 +236,6 @@ struct kfd_dev *kgd2kfd_probe(struct
> amdgpu_device *adev, bool vf)
>       uint32_t gfx_target_version = 0;
>
>       switch (adev->asic_type) {
> -#ifdef KFD_SUPPORT_IOMMU_V2
>  #ifdef CONFIG_DRM_AMDGPU_CIK
>       case CHIP_KAVERI:
>               gfx_target_version = 70000;
> @@ -253,7 +248,6 @@ struct kfd_dev *kgd2kfd_probe(struct
> amdgpu_device *adev, bool vf)
>               if (!vf)
>                       f2g = &gfx_v8_kfd2kgd;
>               break;
> -#endif
>  #ifdef CONFIG_DRM_AMDGPU_CIK
>       case CHIP_HAWAII:
>               gfx_target_version = 70001;
> diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
> b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
> index 7a95698d83f73..c73417e79745e 100644
> --- a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
> +++ b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
> @@ -2335,18 +2335,12 @@ struct device_queue_manager
> *device_queue_manager_init(struct kfd_dev *dev)
>       }
>
>       switch (dev->adev->asic_type) {
> -     case CHIP_CARRIZO:
> -             device_queue_manager_init_vi(&dqm->asic_ops);
> -             break;
> -
>       case CHIP_KAVERI:
> -             device_queue_manager_init_cik(&dqm->asic_ops);
> -             break;
> -
>       case CHIP_HAWAII:
>               device_queue_manager_init_cik_hawaii(&dqm->asic_ops);
>               break;
>
> +     case CHIP_CARRIZO:
>       case CHIP_TONGA:
>       case CHIP_FIJI:
>       case CHIP_POLARIS10:
> --
> 2.40.1

Re: [PATCH AUTOSEL 6.4 10/11] drm/amdkfd: disable IOMMUv2 support for KV/CZ

[Alex Deucher]

On Tue, Aug 22, 2023 at 7:36 AM Sasha Levin <sashal@kernel.org> wrote:
>
> From: Alex Deucher <alexander.deucher@amd.com>
>
> [ Upstream commit 616f92d188ee7142a95a52068efdbea82645f859 ]
>
> Use the dGPU path instead.  There were a lot of platform
> issues with IOMMU in general on these chips due to windows
> not enabling IOMMU at the time.  The dGPU path has been
> used for a long time with newer APUs and works fine.  This
> also paves the way to simplify the driver significantly.
>
> v2: use the dGPU queue manager functions
>
> Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
> Acked-by: Christian König <christian.koenig@amd.com>
> Tested-by: Mike Lothian <mike@fireburn.co.uk>
> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
> Signed-off-by: Sasha Levin <sashal@kernel.org>

This is not necessary for stable.

Alex

> ---
>  drivers/gpu/drm/amd/amdkfd/kfd_device.c               | 6 ------
>  drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c | 8 +-------
>  2 files changed, 1 insertion(+), 13 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device.c b/drivers/gpu/drm/amd/amdkfd/kfd_device.c
> index 00f528eb98126..9c8197573dee7 100644
> --- a/drivers/gpu/drm/amd/amdkfd/kfd_device.c
> +++ b/drivers/gpu/drm/amd/amdkfd/kfd_device.c
> @@ -224,10 +224,6 @@ static void kfd_device_info_init(struct kfd_dev *kfd,
>                     asic_type != CHIP_TONGA)
>                         kfd->device_info.supports_cwsr = true;
>
> -               if (asic_type == CHIP_KAVERI ||
> -                   asic_type == CHIP_CARRIZO)
> -                       kfd->device_info.needs_iommu_device = true;
> -
>                 if (asic_type != CHIP_HAWAII && !vf)
>                         kfd->device_info.needs_pci_atomics = true;
>         }
> @@ -240,7 +236,6 @@ struct kfd_dev *kgd2kfd_probe(struct amdgpu_device *adev, bool vf)
>         uint32_t gfx_target_version = 0;
>
>         switch (adev->asic_type) {
> -#ifdef KFD_SUPPORT_IOMMU_V2
>  #ifdef CONFIG_DRM_AMDGPU_CIK
>         case CHIP_KAVERI:
>                 gfx_target_version = 70000;
> @@ -253,7 +248,6 @@ struct kfd_dev *kgd2kfd_probe(struct amdgpu_device *adev, bool vf)
>                 if (!vf)
>                         f2g = &gfx_v8_kfd2kgd;
>                 break;
> -#endif
>  #ifdef CONFIG_DRM_AMDGPU_CIK
>         case CHIP_HAWAII:
>                 gfx_target_version = 70001;
> diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
> index 7a95698d83f73..c73417e79745e 100644
> --- a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
> +++ b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
> @@ -2335,18 +2335,12 @@ struct device_queue_manager *device_queue_manager_init(struct kfd_dev *dev)
>         }
>
>         switch (dev->adev->asic_type) {
> -       case CHIP_CARRIZO:
> -               device_queue_manager_init_vi(&dqm->asic_ops);
> -               break;
> -
>         case CHIP_KAVERI:
> -               device_queue_manager_init_cik(&dqm->asic_ops);
> -               break;
> -
>         case CHIP_HAWAII:
>                 device_queue_manager_init_cik_hawaii(&dqm->asic_ops);
>                 break;
>
> +       case CHIP_CARRIZO:
>         case CHIP_TONGA:
>         case CHIP_FIJI:
>         case CHIP_POLARIS10:
> --
> 2.40.1
>

[PATCH AUTOSEL 6.4 11/11] drm/amdkfd: disable IOMMUv2 support for Raven

[Sasha Levin]

From: Alex Deucher <alexander.deucher@amd.com>

[ Upstream commit 091ae5473f96ced844af6ba39b94757359b12348 ]

Use the dGPU path instead.  There were a lot of platform
issues with IOMMU in general on these chips due to windows
not enabling IOMMU at the time.  The dGPU path has been
used for a long time with newer APUs and works fine.  This
also paves the way to simplify the driver significantly.

Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Tested-by: Mike Lothian <mike@fireburn.co.uk>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/gpu/drm/amd/amdkfd/kfd_device.c | 7 -------
 1 file changed, 7 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device.c b/drivers/gpu/drm/amd/amdkfd/kfd_device.c
index 9c8197573dee7..224e057d2dbbf 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_device.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_device.c
@@ -185,11 +185,6 @@ static void kfd_device_info_init(struct kfd_dev *kfd,
 
 		kfd_device_info_set_event_interrupt_class(kfd);
 
-		/* Raven */
-		if (gc_version == IP_VERSION(9, 1, 0) ||
-		    gc_version == IP_VERSION(9, 2, 2))
-			kfd->device_info.needs_iommu_device = true;
-
 		if (gc_version < IP_VERSION(11, 0, 0)) {
 			/* Navi2x+, Navi1x+ */
 			if (gc_version == IP_VERSION(10, 3, 6))
@@ -283,7 +278,6 @@ struct kfd_dev *kgd2kfd_probe(struct amdgpu_device *adev, bool vf)
 			gfx_target_version = 90000;
 			f2g = &gfx_v9_kfd2kgd;
 			break;
-#ifdef KFD_SUPPORT_IOMMU_V2
 		/* Raven */
 		case IP_VERSION(9, 1, 0):
 		case IP_VERSION(9, 2, 2):
@@ -291,7 +285,6 @@ struct kfd_dev *kgd2kfd_probe(struct amdgpu_device *adev, bool vf)
 			if (!vf)
 				f2g = &gfx_v9_kfd2kgd;
 			break;
-#endif
 		/* Vega12 */
 		case IP_VERSION(9, 2, 1):
 			gfx_target_version = 90004;
-- 
2.40.1

RE: [PATCH AUTOSEL 6.4 11/11] drm/amdkfd: disable IOMMUv2 support for Raven

[Deucher, Alexander]

[Public]

> -----Original Message-----
> From: Sasha Levin <sashal@kernel.org>
> Sent: Tuesday, August 22, 2023 7:36 AM
> To: linux-kernel@vger.kernel.org; stable@vger.kernel.org
> Cc: Deucher, Alexander <Alexander.Deucher@amd.com>; Kuehling, Felix
> <Felix.Kuehling@amd.com>; Koenig, Christian <Christian.Koenig@amd.com>;
> Mike Lothian <mike@fireburn.co.uk>; Sasha Levin <sashal@kernel.org>; Pan,
> Xinhui <Xinhui.Pan@amd.com>; airlied@gmail.com; daniel@ffwll.ch; amd-
> gfx@lists.freedesktop.org; dri-devel@lists.freedesktop.org
> Subject: [PATCH AUTOSEL 6.4 11/11] drm/amdkfd: disable IOMMUv2
> support for Raven
>
> From: Alex Deucher <alexander.deucher@amd.com>
>
> [ Upstream commit 091ae5473f96ced844af6ba39b94757359b12348 ]
>
> Use the dGPU path instead.  There were a lot of platform issues with IOMMU
> in general on these chips due to windows not enabling IOMMU at the time.
> The dGPU path has been used for a long time with newer APUs and works
> fine.  This also paves the way to simplify the driver significantly.

This is not needed for stable.

Alex

>
> Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
> Acked-by: Christian König <christian.koenig@amd.com>
> Tested-by: Mike Lothian <mike@fireburn.co.uk>
> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
> Signed-off-by: Sasha Levin <sashal@kernel.org>
> ---
>  drivers/gpu/drm/amd/amdkfd/kfd_device.c | 7 -------
>  1 file changed, 7 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device.c
> b/drivers/gpu/drm/amd/amdkfd/kfd_device.c
> index 9c8197573dee7..224e057d2dbbf 100644
> --- a/drivers/gpu/drm/amd/amdkfd/kfd_device.c
> +++ b/drivers/gpu/drm/amd/amdkfd/kfd_device.c
> @@ -185,11 +185,6 @@ static void kfd_device_info_init(struct kfd_dev *kfd,
>
>               kfd_device_info_set_event_interrupt_class(kfd);
>
> -             /* Raven */
> -             if (gc_version == IP_VERSION(9, 1, 0) ||
> -                 gc_version == IP_VERSION(9, 2, 2))
> -                     kfd->device_info.needs_iommu_device = true;
> -
>               if (gc_version < IP_VERSION(11, 0, 0)) {
>                       /* Navi2x+, Navi1x+ */
>                       if (gc_version == IP_VERSION(10, 3, 6)) @@ -283,7
> +278,6 @@ struct kfd_dev *kgd2kfd_probe(struct amdgpu_device *adev,
> bool vf)
>                       gfx_target_version = 90000;
>                       f2g = &gfx_v9_kfd2kgd;
>                       break;
> -#ifdef KFD_SUPPORT_IOMMU_V2
>               /* Raven */
>               case IP_VERSION(9, 1, 0):
>               case IP_VERSION(9, 2, 2):
> @@ -291,7 +285,6 @@ struct kfd_dev *kgd2kfd_probe(struct
> amdgpu_device *adev, bool vf)
>                       if (!vf)
>                               f2g = &gfx_v9_kfd2kgd;
>                       break;
> -#endif
>               /* Vega12 */
>               case IP_VERSION(9, 2, 1):
>                       gfx_target_version = 90004;
> --
> 2.40.1