Reply-To: akpm@linux-foundation.org


(switched to email.  Please respond via emailed reply-to-all, not via the
bugzilla web interface).

On Wed, 15 Oct 2008 04:56:27 -0700 (PDT) bugme-daemon@bugzilla.kernel.org wrote:

> http://bugzilla.kernel.org/show_bug.cgi?id=11765
> 
>            Summary: Intelfb + HW text accel on Acer Extensa 5220
>            Product: Drivers
>            Version: 2.5
>      KernelVersion: 2.6.27
>           Platform: All
>         OS/Version: Linux
>               Tree: Mainline
>             Status: NEW
>           Severity: normal
>           Priority: P1
>          Component: Console/Framebuffers
>         AssignedTo: jsimmons@infradead.org
>         ReportedBy: hanzelpeter@gmail.com
> 
> 
> Latest working kernel version: unknown
> Earliest failing kernel version: 2.6.25.4
> Distribution: LFS 6.3
> Hardware Environment: Acer Extensa 5220. Gr. card Intel 965GM X3100
> Software Environment: intelfb compiled in kernel
> Problem Description:
> 
> Steps to reproduce: boot with acceleration enabled.
> 
> I cannot get working text HW accel in intelfb framebuffer.
> Framebuffer without accel is working good.
> 
> I've got this is dmesg:
> 
> Kernel command line: root=/dev/sda6 vga=0x362 video=intelfb:mode=1280x800 
> 
> [drm] Initialized i915 1.6.0 20060119 on minor 0
> intelfb: intelfb_init
> intelfb: Framebuffer driver for Intel(R)
> 830M/845G/852GM/855GM/865G/915G/915GM/945G/945GM/965G/965GM chipsets
> intelfb: Version 0.9.5
> intelfb: intelfb_setup
> intelfb: options: mode=1280x800
> intelfb: intelfb_pci_register
> intelfb: fb aperture: 0xd0000000/0x10000000, MMIO region: 0xfc000000/0x100000
> intelfb: 00:02.0: Intel(R) 965GM, aperture size 256MB, stolen memory 7932kB
> intelfb: fb: 0xd0000000(+ 0x0)/0x7bf000 (0xf8c00000)
> intelfb: MMIO: 0xfc000000/0x80000 (0xfc400000)
> intelfb: ring buffer: 0xd3001000/0x10000 (0xfbc01000)
> intelfb: HW cursor: 0x0/0x0 (0x00000000) (offset 0x0) (phys 0x0)
> intelfb: options: vram = 4, accel = 1, hwcursor = 0, fixed = 0, noinit = 0
> intelfb: options: mode = "1280x800"
> intelfb: Non-CRT device is enabled ( LVDS port ).  Disabling mode switching.
> intelfb: get_initial_mode
> intelfb: Initial info: FB is 0xd0000000/0x770000 (7616 kByte)
> intelfb: Initial info: mode is 1280x800-32 (5120)
> intelfb: update_dinfo
> intelfb: intelfb_var_to_depth: bpp: 32, green.length is 8
> intelfb: intelfb_set_fbinfo
> intelfb: intelfb_init_var
> intelfb: Initial video mode is 1280x800-32@60.
> intelfb: Initial video mode is from 5.
> intelfb: update_dinfo
> intelfb: intelfb_var_to_depth: bpp: 32, green.length is 8
> intelfb: I2C bus CRTDDC_A registered.
> intelfb: I2C bus SDVOCTRL_E registered.
> intelfb: intelfbhw_print_hw_state
> hw state dump start
>         VGA0_DIVISOR:           0x00031108
>         VGA1_DIVISOR:           0x00031406
>         VGAPD:                  0x00020002
>         VGA0: (m1, m2, n, p1, p2) = (17, 8, 3, 2, 0)
>         VGA0: clock is 100800
>         VGA1: (m1, m2, n, p1, p2) = (20, 6, 3, 2, 0)
>         VGA1: clock is 113280
>         DPLL_A:                 0x04800c00
>         DPLL_B:                 0x98046a00
>         FPA0:                   0x00031108
>         FPA1:                   0x00031108
>         FPB0:                   0x00021309
>         FPB1:                   0x00031108
>         PLLA0: (m1, m2, n, p1, p2) = (17, 8, 3, 8, 0)
>         PLLA0: clock is 25200
>         PLLA1: (m1, m2, n, p1, p2) = (17, 8, 3, 8, 0)
>         PLLA1: clock is 25200
>         HTOTAL_A:               0x031f027f
>         HBLANK_A:               0x03170287
>         HSYNC_A:                0x02ef028f
>         VTOTAL_A:               0x020c01df
>         VBLANK_A:               0x020401e7
>         VSYNC_A:                0x01eb01e9
>         SRC_SIZE_A:             0x027f01df
>         BCLRPAT_A:              0x00000000
>         HTOTAL_B:               0x057f04ff
>         HBLANK_B:               0x057f04ff
>         HSYNC_B:                0x053f050f
>         VTOTAL_B:               0x032f031f
>         VBLANK_B:               0x032f031f
>         VSYNC_B:                0x03230320
>         SRC_SIZE_B:             0x04ff031f
>         BCLRPAT_B:              0x00000000
>         ADPA:                   0x40008c18
>         DVOA:                   0x00000000
>         DVOB:                   0x00080018
>         DVOC:                   0x00080018
>         DVOA_SRCDIM:            0x00000000
>         DVOB_SRCDIM:            0x00000000
>         DVOC_SRCDIM:            0x00000000
>         LVDS:                   0xc2308300
>         PIPEACONF:              0x00000000
>         PIPEBCONF:              0xc0000000
>         DISPARB:                0x00001d9c
>         CURSOR_A_CONTROL:       0x00000000
>         CURSOR_B_CONTROL:       0x00000000
>         CURSOR_A_BASEADDR:      0x00000000
>         CURSOR_B_BASEADDR:      0x00000000
>         CURSOR_A_PALETTE:       0x00000000, 0x00000000, 0x00000000,
>         0x00000000
>         CURSOR_B_PALETTE:       0x00000000, 0x00000000, 0x00000000,
>         0x00000000
>         CURSOR_SIZE:            0x00000000
>         DSPACNTR:               0x00000000
>         DSPBCNTR:               0x99000000
>         DSPABASE:               0x00000000
>         DSPBBASE:               0x00000000
>         DSPASTRIDE:             0x00000000
>         DSPBSTRIDE:             0x00001400
>         VGACNTRL:               0xa2c4008e
>         ADD_ID:                 0x00000000
>         SWF00                   0x00000000
>         SWF01                   0x00000001
>         SWF02                   0x00000000
>         SWF03                   0x00000000
>         SWF04                   0x00000000
>         SWF05                   0x00000000
>         SWF06                   0x00000000
>         SWF10                   0x01000800
>         SWF11                   0x00001c00
>         SWF12                   0x00000000
>         SWF13                   0x62620000
>         SWF14                   0xc0000000
>         SWF15                   0x0000020b
>         SWF16                   0x00000000
>         SWF30                   0x00000000
>         SWF31                   0x00000000
>         SWF32                   0x00000000
>         FENCE0                  0x00000000
>         FENCE1                  0x00000000
>         FENCE2                  0x00000000
>         FENCE3                  0x00000000
>         FENCE4                  0x00000000
>         FENCE5                  0x00000000
>         FENCE6                  0x00000000
>         FENCE7                  0x00000000
>         INSTPM                  0x00000000
>         MEM_MODE                0x00000000
>         FW_BLC_0                0x00000000
>         FW_BLC_1                0x00000000
>         HWSTAM                  0xdfff
>         IER                     0x0000
>         IIR                     0x0000
>         IMR                     0xdfff
> hw state dump end
> intelfb: Changing the video mode is not supported.
> Switched to NOHz mode on CPU #0
> intelfb: ring buffer : space: 65400 wanted 65472
> intelfb: lockup - turning off hardware acceleration
> Console: switching to colour frame buffer device 160x50
> Serial: 8250/16550 driver4 ports, IRQ sharing disabled
> brd: module loaded
> loop: module loaded
> acer-wmi: Acer Laptop ACPI-WMI Extras 
> 
> Searched forums, wrote mails, but no response.
> I am loosing ideas what to do.

Have you tried the drm i915 driver?

I have tried it. It works well will drm i915.
But I am not able to test HW accel, as I have no X with mesa for 3d.
And for 2d. Accell in intel_fb uses:
DRM_I915
	select FB_CFB_FILLRECT
	select FB_CFB_COPYAREA
	select FB_CFB_IMAGEBLIT

The accelerated fillrect etc are internal to the fbcon driver only to speed up the graphical console. Userland never will see the acceleration. What exactly are you trying to do?

Hello. I was only trying to get accelerated fbcon with intelfb.
Now I am moving to use KMS. Maybe I should test latest kernel.