[Mesa-dev] [PATCH] radeon: 9800 SE has only one quadpipe

[Tormod Volden]

From: Tormod Volden <debian.tormod at gmail.com>

Although these cards have 2 pipelines on the silicon only
the first passed the QA and the other should be disabled.

http://www.digital-daily.com/video/ati-radeon9800se/
http://www.rojakpot.com/showarticle.aspx?artno=101&pgno=1

Signed-off-by: Tormod Volden <debian.tormod at gmail.com>
---

Many of these cards have two working pipelines, but the
official drivers would disable one. So to play safe we
should do it as well.

I discovered this while studying a corruption issue report.
Unfortunately this patch did not fix the issue, so I have no
confirmation of this patch actually fixing something.

I have a gallium and kernel patch ready if this one
is approved.

Tormod

 src/mesa/drivers/dri/radeon/radeon_screen.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/src/mesa/drivers/dri/radeon/radeon_screen.c b/src/mesa/drivers/dri/radeon/radeon_screen.c
index 4d7255f..e06f766 100644
--- a/src/mesa/drivers/dri/radeon/radeon_screen.c
+++ b/src/mesa/drivers/dri/radeon/radeon_screen.c
@@ -1136,6 +1136,7 @@ radeonCreateScreen( __DRIscreen *sPriv )
        /* pipe overrides */
        switch (dri_priv->deviceID) {
        case PCI_CHIP_R300_AD: /* 9500 with 1 quadpipe verified by: Reid Linnemann <lreid at cs.okstate.edu> */
+       case PCI_CHIP_R350_AH: /* 9800 SE only have 1 quadpipe */
        case PCI_CHIP_RV410_5E4C: /* RV410 SE only have 1 quadpipe */
        case PCI_CHIP_RV410_5E4F: /* RV410 SE only have 1 quadpipe */
 	   screen->num_gb_pipes = 1;
@@ -1343,6 +1344,7 @@ radeonCreateScreen2(__DRIscreen *sPriv)
        /* pipe overrides */
        switch (device_id) {
        case PCI_CHIP_R300_AD: /* 9500 with 1 quadpipe verified by: Reid Linnemann <lreid at cs.okstate.edu> */
+       case PCI_CHIP_R350_AH: /* 9800 SE only have 1 quadpipe */
        case PCI_CHIP_RV410_5E4C: /* RV410 SE only have 1 quadpipe */
        case PCI_CHIP_RV410_5E4F: /* RV410 SE only have 1 quadpipe */
 	   screen->num_gb_pipes = 1;
-- 
1.7.0.4