diff options
Diffstat (limited to 'drivers/gpu/drm/radeon/r600.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/r600.c | 29 |
1 files changed, 17 insertions, 12 deletions
diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c index 1b5aa1fd368..e87475c87d5 100644 --- a/drivers/gpu/drm/radeon/r600.c +++ b/drivers/gpu/drm/radeon/r600.c @@ -339,11 +339,10 @@ int r600_mc_init(struct radeon_device *rdev) { fixed20_12 a; u32 tmp; - int chansize; + int chansize, numchan; int r; /* Get VRAM informations */ - rdev->mc.vram_width = 128; rdev->mc.vram_is_ddr = true; tmp = RREG32(RAMCFG); if (tmp & CHANSIZE_OVERRIDE) { @@ -353,17 +352,23 @@ int r600_mc_init(struct radeon_device *rdev) } else { chansize = 32; } - if (rdev->family == CHIP_R600) { - rdev->mc.vram_width = 8 * chansize; - } else if (rdev->family == CHIP_RV670) { - rdev->mc.vram_width = 4 * chansize; - } else if ((rdev->family == CHIP_RV610) || - (rdev->family == CHIP_RV620)) { - rdev->mc.vram_width = chansize; - } else if ((rdev->family == CHIP_RV630) || - (rdev->family == CHIP_RV635)) { - rdev->mc.vram_width = 2 * chansize; + tmp = RREG32(CHMAP); + switch ((tmp & NOOFCHAN_MASK) >> NOOFCHAN_SHIFT) { + case 0: + default: + numchan = 1; + break; + case 1: + numchan = 2; + break; + case 2: + numchan = 4; + break; + case 3: + numchan = 8; + break; } + rdev->mc.vram_width = numchan * chansize; /* Could aper size report 0 ? */ rdev->mc.aper_base = drm_get_resource_start(rdev->ddev, 0); rdev->mc.aper_size = drm_get_resource_len(rdev->ddev, 0); |