Port xf86-video-ast to Openpower

[yu]

Hi, Dave

how to use the modesetting dreiver? Ubuntu has no
xserver-xorg-video-ast package,
so if startx, the modesetting module (and the fbdev module) seems
loading by default
after the AST driver failed:

[  2483.516] (II) LoadModule: "modesetting"
[  2483.516] (II) Loading /usr/lib/xorg/modules/drivers/modesetting_drv.so
[  2483.516] (II) Module modesetting: vendor="X.Org Foundation"
[  2483.516]    compiled for 1.17.1, module version = 1.17.1
[  2483.516]    Module class: X.Org Video Driver
[  2483.516]    ABI class: X.Org Video Driver, version 19.0

And the modesetting module seems working correctly, But there are no
VGA output, I
can change back to console by ctrl+alt+F*, also I tried vnc server, no success.

[  2483.517] (II) modeset(0): Creating default Display subsection in
Screen section
        "Default Screen Section" for depth/fbbpp 24/32
[  2483.517] (==) modeset(0): Depth 24, (==) framebuffer bpp 32
[  2483.517] (==) modeset(0): RGB weight 888
[  2483.517] (==) modeset(0): Default visual is TrueColor
[  2483.517] (II) Loading sub module "glamoregl"
[  2483.517] (II) LoadModule: "glamoregl"
[  2483.518] (II) Loading /usr/lib/xorg/modules/libglamoregl.so
[  2483.522] (II) Module glamoregl: vendor="X.Org Foundation"
[  2483.522]    compiled for 1.17.1, module version = 1.0.0
[  2483.522]    ABI class: X.Org ANSI C Emulation, version 0.4
[  2483.523] (II) glamor: OpenGL accelerated X.org driver based.
[  2483.527] (II) glamor: EGL version 1.4 (DRI2):
[  2483.527] EGL_MESA_drm_image required.
[  2483.527] (EE) modeset(0): glamor initialization failed
[  2483.527] (II) modeset(0): ShadowFB: preferred YES, enabled YES
[  2483.589] (II) modeset(0): Output VGA-0 has no monitor section
[  2483.650] (II) modeset(0): EDID for output VGA-0
[  2483.650] (II) modeset(0): Manufacturer: BNQ  Model: 7801  Serial#: 21573
[  2483.650] (II) modeset(0): Year: 2007  Week: 42
[  2483.650] (II) modeset(0): EDID Version: 1.3

2016-04-15 10:38 GMT+08:00 Dave Airlie <airlied at gmail.com>:
> The Xorg modesetting driver should be fine on this hardware, you don't
> need the -ast driver.
>
> Dave.
>
> On 15 April 2016 at 11:49, yu <kkndyu at gmail.com> wrote:
>> Dear Maintainers,
>>
>>
>> I have a Tyan TN71-BP012 power8 server, and its graphic is  Aspeed AST2400.
>> http://tyan.com/Barebones_TN71-BP012_BSP012T71V14HR-4T-3
>>
>> Recently I test Ubuntu 15.10 ppc64el on it, the kernel ast driver
>> works OK, but when test X, I found that the ast_drv.so build from the
>> xf86-video-ast can not work, here is the error message from X:
>>
>> [  7498.243] (II) LoadModule: "ast"
>> [  7498.244] (II) Loading /usr/lib/xorg/modules/drivers/ast_drv.so
>> [  7498.244] (EE) Failed to load
>> /usr/lib/xorg/modules/drivers/ast_drv.so:
>> /usr/lib/xorg/modules/drivers/ast_drv.so: undefined symbol: ioBase
>> [  7498.244] (II) UnloadModule: "ast"
>> [  7498.244] (II) Unloading ast
>> [  7498.244] (EE) Failed to load module "ast" (loader failed, 7)
>>
>> I searched the "ioBase", it is defined in the compiler.h under the
>> MACRO "__powerpc__", so I just change the MACRO to let the driver can
>> be load, then error again:
>>
>> [ 26963.956] (WW) Falling back to old probe method for ast
>> [ 26963.956] (--) Assigning device section with no busID to primary device
>> [ 26963.956] (--) Assigning device section with no busID to primary device
>> [ 26963.956] (WW) AST: More than one matching Device section found:
>> Autoconfigured Video Device ast
>> [ 26963.956] (--) Chipset ASPEED Graphics Family found
>> [ 26963.956] (EE) ast: The PCI device 0x2000 at 07 at 01:00:0 has a
>> kernel module claiming it.
>> [ 26963.956] (EE) ast: This driver cannot operate until it has been unloaded.
>>
>> So I just comment the "pci_device_has_kernel_driver" in ast_driver.c
>> to let the probe continue, then error again:
>>
>> [ 22795.892] (II) AST(0): Creating default Display subsection in Screen section
>>         "Default Screen Section" for depth/fbbpp 24/32
>> [ 22795.892] (==) AST(0): Depth 24, (--) framebuffer bpp 32
>> [ 22795.892] (==) AST(0): Using gamma correction (1.0, 1.0, 1.0)
>> [ 22795.892] (==) AST(0): RGB weight 888
>> [ 22795.892] (==) AST(0): Default visual is TrueColor
>> [ 22795.892] (--) AST(0): Chipset: "ASPEED Graphics Family"
>> [ 22795.892] (II) AST(0): Linear framebuffer at 0x82000000
>> [ 22795.893] (II) AST(0): IO registers at addr 0x81800000
>> [ 22795.893] (EE) AST(0): Map Memory Map IO Failed
>>
>>
>> It seems that the xf86-video-ast driver is for a 32bit system? is
>> there other X driver for the power8 machine using AST chips?
>>
>> BTW: The xf86-video-vesa can't work on the machine either, the error
>> message is also "undefined symbol: ioBase".
>>
>> cheers
>>
>> Yu
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