Re: [PATCH 5/8] video/aperture: Move vga handling to pci function

2023-04-05 Thread Javier Martinez Canillas
Daniel Vetter  writes:

> A few reasons for this:
>
> - It's really the only one where this matters. I tried looking around,
>   and I didn't find any non-pci vga-compatible controllers for x86
>   (since that's the only platform where we had this until a few
>   patches ago), where a driver participating in the aperture claim
>   dance would interfere.
>
> - I also don't expect that any future bus anytime soon will
>   not just look like pci towards the OS, that's been the case for like
>   25+ years by now for practically everything (even non non-x86).
>
> - Also it's a bit funny if we have one part of the vga removal in the
>   pci function, and the other in the generic one.
>
> v2: Rebase.
>
> Signed-off-by: Daniel Vetter 
> Cc: Thomas Zimmermann 
> Cc: Javier Martinez Canillas 
> Cc: Helge Deller 
> Cc: linux-fb...@vger.kernel.org
> ---
>  drivers/video/aperture.c | 15 +++
>  1 file changed, 7 insertions(+), 8 deletions(-)

Reviewed-by: Javier Martinez Canillas 

-- 
Best regards,

Javier Martinez Canillas
Core Platforms
Red Hat



[PATCH 5/8] video/aperture: Move vga handling to pci function

2023-04-04 Thread Daniel Vetter
A few reasons for this:

- It's really the only one where this matters. I tried looking around,
  and I didn't find any non-pci vga-compatible controllers for x86
  (since that's the only platform where we had this until a few
  patches ago), where a driver participating in the aperture claim
  dance would interfere.

- I also don't expect that any future bus anytime soon will
  not just look like pci towards the OS, that's been the case for like
  25+ years by now for practically everything (even non non-x86).

- Also it's a bit funny if we have one part of the vga removal in the
  pci function, and the other in the generic one.

v2: Rebase.

Signed-off-by: Daniel Vetter 
Cc: Thomas Zimmermann 
Cc: Javier Martinez Canillas 
Cc: Helge Deller 
Cc: linux-fb...@vger.kernel.org
---
 drivers/video/aperture.c | 15 +++
 1 file changed, 7 insertions(+), 8 deletions(-)

diff --git a/drivers/video/aperture.c b/drivers/video/aperture.c
index 552cffdb827b..ec9387d94049 100644
--- a/drivers/video/aperture.c
+++ b/drivers/video/aperture.c
@@ -298,14 +298,6 @@ int aperture_remove_conflicting_devices(resource_size_t 
base, resource_size_t si
 
aperture_detach_devices(base, size);
 
-   /*
-* If this is the primary adapter, there could be a VGA device
-* that consumes the VGA framebuffer I/O range. Remove this device
-* as well.
-*/
-   if (primary)
-   aperture_detach_devices(VGA_FB_PHYS_BASE, VGA_FB_PHYS_SIZE);
-
return 0;
 }
 EXPORT_SYMBOL(aperture_remove_conflicting_devices);
@@ -342,6 +334,13 @@ int aperture_remove_conflicting_pci_devices(struct pci_dev 
*pdev, const char *na
}
 
if (primary) {
+   /*
+* If this is the primary adapter, there could be a VGA device
+* that consumes the VGA framebuffer I/O range. Remove this
+* device as well.
+*/
+   aperture_detach_devices(VGA_FB_PHYS_BASE, VGA_FB_PHYS_SIZE);
+
/*
 * WARNING: Apparently we must kick fbdev drivers before vgacon,
 * otherwise the vga fbdev driver falls over.
-- 
2.40.0