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drm/radeon/kms: fix vram_width calculation on r6xx/r7xx 

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Alex Deucher 2009-10-19 17:23:33 -04:00 committed by Dave Airlie
parent ceb776bc87
commit 5885b7a9f4
4 changed files with 52 additions and 16 deletions
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29
drivers/gpu/drm/radeon/r600.c
View File

@ -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);

4
drivers/gpu/drm/radeon/r600d.h
View File

@ -270,6 +270,10 @@
#define PCIE_PORT_INDEX 0x0038
#define PCIE_PORT_DATA 0x003C
#define CHMAP 0x2004
#define NOOFCHAN_SHIFT 12
#define NOOFCHAN_MASK 0x00003000
#define RAMCFG 0x2408
#define NOOFBANK_SHIFT 0
#define NOOFBANK_MASK 0x00000001

30
drivers/gpu/drm/radeon/rv770.c
View File

@ -774,14 +774,36 @@ int rv770_mc_init(struct radeon_device *rdev)
{
fixed20_12 a;
u32 tmp;
int chansize, numchan;
int r;
/* Get VRAM informations */
/* FIXME: Don't know how to determine vram width, need to check
* vram_width usage
*/
rdev->mc.vram_width = 128;
rdev->mc.vram_is_ddr = true;
tmp = RREG32(MC_ARB_RAMCFG);
if (tmp & CHANSIZE_OVERRIDE) {
chansize = 16;
} else if (tmp & CHANSIZE_MASK) {
chansize = 64;
} else {
chansize = 32;
}
tmp = RREG32(MC_SHARED_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);

5
drivers/gpu/drm/radeon/rv770d.h
View File

@ -129,6 +129,10 @@
#define HDP_REG_COHERENCY_FLUSH_CNTL 0x54A0
#define HDP_TILING_CONFIG 0x2F3C
#define MC_SHARED_CHMAP 0x2004
#define NOOFCHAN_SHIFT 12
#define NOOFCHAN_MASK 0x00003000
#define MC_ARB_RAMCFG 0x2760
#define NOOFBANK_SHIFT 0
#define NOOFBANK_MASK 0x00000003
@ -142,6 +146,7 @@
#define CHANSIZE_MASK 0x00000100
#define BURSTLENGTH_SHIFT 9
#define BURSTLENGTH_MASK 0x00000200
#define CHANSIZE_OVERRIDE (1 << 11)
#define MC_VM_AGP_TOP 0x2028
#define MC_VM_AGP_BOT 0x202C
#define MC_VM_AGP_BASE 0x2030