linux-kernel - Re: [PATCH 08/83] drm/radeon: Add calls to initialize and finalize kfd from radeon

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Message-ID: <20140711163627.GI1870@gmail.com>
Date:	Fri, 11 Jul 2014 12:36:28 -0400
From:	Jerome Glisse <j.glisse@...il.com>
To:	Oded Gabbay <oded.gabbay@...il.com>
Cc:	David Airlie <airlied@...ux.ie>,
	Alex Deucher <alexander.deucher@....com>,
	linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org,
	John Bridgman <John.Bridgman@....com>,
	Andrew Lewycky <Andrew.Lewycky@....com>,
	Joerg Roedel <joro@...tes.org>,
	Oded Gabbay <oded.gabbay@....com>,
	Christian König <christian.koenig@....com>
Subject: Re: [PATCH 08/83] drm/radeon: Add calls to initialize and finalize
 kfd from radeon

On Fri, Jul 11, 2014 at 12:50:08AM +0300, Oded Gabbay wrote:
> The KFD driver should be loaded when the radeon driver is loaded and
> should be finalized when the radeon driver is removed.
> 
> This patch adds a function call to initialize kfd from radeon_init
> and a function call to finalize kfd from radeon_exit.
> 
> If the KFD driver is not present in the system, the initialize call
> fails and the radeon driver continues normally.
> 
> This patch also adds calls to probe, initialize and finalize a kfd device
> per radeon device using the kgd-->kfd interface.
> 
> Signed-off-by: Oded Gabbay <oded.gabbay@....com>

It might be nice to allow to build radeon without HSA so i think an
CONFIG_HSA should be added and have other thing depends on it.
Otherwise this one is.

Reviewed-by: Jérôme Glisse <jglisse@...hat.com>


> ---
>  drivers/gpu/drm/radeon/radeon_drv.c | 6 ++++++
>  drivers/gpu/drm/radeon/radeon_kms.c | 9 +++++++++
>  2 files changed, 15 insertions(+)
> 
> diff --git a/drivers/gpu/drm/radeon/radeon_drv.c b/drivers/gpu/drm/radeon/radeon_drv.c
> index cb14213..88a45a0 100644
> --- a/drivers/gpu/drm/radeon/radeon_drv.c
> +++ b/drivers/gpu/drm/radeon/radeon_drv.c
> @@ -151,6 +151,9 @@ static inline void radeon_register_atpx_handler(void) {}
>  static inline void radeon_unregister_atpx_handler(void) {}
>  #endif
>  
> +extern bool radeon_kfd_init(void);
> +extern void radeon_kfd_fini(void);
> +
>  int radeon_no_wb;
>  int radeon_modeset = -1;
>  int radeon_dynclks = -1;
> @@ -630,12 +633,15 @@ static int __init radeon_init(void)
>  #endif
>  	}
>  
> +	radeon_kfd_init();
> +
>  	/* let modprobe override vga console setting */
>  	return drm_pci_init(driver, pdriver);
>  }
>  
>  static void __exit radeon_exit(void)
>  {
> +	radeon_kfd_fini();
>  	drm_pci_exit(driver, pdriver);
>  	radeon_unregister_atpx_handler();
>  }
> diff --git a/drivers/gpu/drm/radeon/radeon_kms.c b/drivers/gpu/drm/radeon/radeon_kms.c
> index 35d9318..0748284 100644
> --- a/drivers/gpu/drm/radeon/radeon_kms.c
> +++ b/drivers/gpu/drm/radeon/radeon_kms.c
> @@ -34,6 +34,10 @@
>  #include <linux/slab.h>
>  #include <linux/pm_runtime.h>
>  
> +extern void radeon_kfd_device_probe(struct radeon_device *rdev);
> +extern void radeon_kfd_device_init(struct radeon_device *rdev);
> +extern void radeon_kfd_device_fini(struct radeon_device *rdev);
> +
>  #if defined(CONFIG_VGA_SWITCHEROO)
>  bool radeon_has_atpx(void);
>  #else
> @@ -63,6 +67,8 @@ int radeon_driver_unload_kms(struct drm_device *dev)
>  
>  	pm_runtime_get_sync(dev->dev);
>  
> +	radeon_kfd_device_fini(rdev);
> +
>  	radeon_acpi_fini(rdev);
>  	
>  	radeon_modeset_fini(rdev);
> @@ -142,6 +148,9 @@ int radeon_driver_load_kms(struct drm_device *dev, unsigned long flags)
>  				"Error during ACPI methods call\n");
>  	}
>  
> +	radeon_kfd_device_probe(rdev);
> +	radeon_kfd_device_init(rdev);
> +
>  	if (radeon_is_px(dev)) {
>  		pm_runtime_use_autosuspend(dev->dev);
>  		pm_runtime_set_autosuspend_delay(dev->dev, 5000);
> -- 
> 1.9.1
> 
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