drm/radeon/kms: MC setup changes for fusion APUs

- CONFIG_MEMSIZE is in bytes on fusion.
- FB_BASE and FB_TOP are finer grained.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c
index e9b262f..090f747 100644 (file)
--- a/drivers/gpu/drm/radeon/evergreen.c
+++ b/drivers/gpu/drm/radeon/evergreen.c
@@ -1940,9 +1940,15 @@ int evergreen_mc_init(struct radeon_device *rdev)
        rdev->mc.aper_base = pci_resource_start(rdev->pdev, 0);
        rdev->mc.aper_size = pci_resource_len(rdev->pdev, 0);
        /* Setup GPU memory space */
-       /* size in MB on evergreen */
-       rdev->mc.mc_vram_size = RREG32(CONFIG_MEMSIZE) * 1024 * 1024;
-       rdev->mc.real_vram_size = RREG32(CONFIG_MEMSIZE) * 1024 * 1024;
+       if (rdev->flags & RADEON_IS_IGP) {
+               /* size in bytes on fusion */
+               rdev->mc.mc_vram_size = RREG32(CONFIG_MEMSIZE);
+               rdev->mc.real_vram_size = RREG32(CONFIG_MEMSIZE);
+       } else {
+               /* size in MB on evergreen */
+               rdev->mc.mc_vram_size = RREG32(CONFIG_MEMSIZE) * 1024 * 1024;
+               rdev->mc.real_vram_size = RREG32(CONFIG_MEMSIZE) * 1024 * 1024;
+       }
        rdev->mc.visible_vram_size = rdev->mc.aper_size;
        rdev->mc.active_vram_size = rdev->mc.visible_vram_size;
        r700_vram_gtt_location(rdev, &rdev->mc);

diff --git a/drivers/gpu/drm/radeon/rv770.c b/drivers/gpu/drm/radeon/rv770.c
index c23349a..2b66af9 100644 (file)
--- a/drivers/gpu/drm/radeon/rv770.c
+++ b/drivers/gpu/drm/radeon/rv770.c
@@ -237,6 +237,12 @@ static void rv770_mc_program(struct radeon_device *rdev)
                        rdev->mc.vram_end >> 12);
        }
        WREG32(MC_VM_SYSTEM_APERTURE_DEFAULT_ADDR, 0);
+       if (rdev->flags & RADEON_IS_IGP) {
+               tmp = RREG32(MC_FUS_VM_FB_OFFSET) & 0x000FFFFF;
+               tmp |= ((rdev->mc.vram_end >> 20) & 0xF) << 24;
+               tmp |= ((rdev->mc.vram_start >> 20) & 0xF) << 20;
+               WREG32(MC_FUS_VM_FB_OFFSET, tmp);
+       }
        tmp = ((rdev->mc.vram_end >> 24) & 0xFFFF) << 16;
        tmp |= ((rdev->mc.vram_start >> 24) & 0xFFFF);
        WREG32(MC_VM_FB_LOCATION, tmp);
@@ -1035,8 +1041,10 @@ void r700_vram_gtt_location(struct radeon_device *rdev, struct radeon_mc *mc)
                                mc->vram_end, mc->real_vram_size >> 20);
        } else {
                u64 base = 0;
-               if (rdev->flags & RADEON_IS_IGP)
+               if (rdev->flags & RADEON_IS_IGP) {
                        base = (RREG32(MC_VM_FB_LOCATION) & 0xFFFF) << 24;
+                       base |= RREG32(MC_FUS_VM_FB_OFFSET) & 0x00F00000;
+               }
                radeon_vram_location(rdev, &rdev->mc, base);
                rdev->mc.gtt_base_align = 0;
                radeon_gtt_location(rdev, mc);

diff --git a/drivers/gpu/drm/radeon/rv770d.h b/drivers/gpu/drm/radeon/rv770d.h
index 7b1c8f8..e09a403 100644 (file)
--- a/drivers/gpu/drm/radeon/rv770d.h
+++ b/drivers/gpu/drm/radeon/rv770d.h
@@ -158,6 +158,7 @@
 #define        MC_VM_AGP_BOT                                   0x202C
 #define        MC_VM_AGP_BASE                                  0x2030
 #define        MC_VM_FB_LOCATION                               0x2024
+#define        MC_FUS_VM_FB_OFFSET                             0x2898
 #define        MC_VM_MB_L1_TLB0_CNTL                           0x2234
 #define        MC_VM_MB_L1_TLB1_CNTL                           0x2238
 #define        MC_VM_MB_L1_TLB2_CNTL                           0x223C