Merge tag 'batman-adv-fix-for-davem' of git://git.open-mesh.org/linux-merge

[deliverable/linux.git] / drivers / gpu / drm / radeon / r600.c

diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c
index 1a08008c978bc413fe6e4ac5161c61053ed62c93..0e5341695922b504298b103df17c936e95a34d0a 100644 (file)
--- a/drivers/gpu/drm/radeon/r600.c
+++ b/drivers/gpu/drm/radeon/r600.c
@@ -1046,6 +1046,24 @@ int r600_mc_wait_for_idle(struct radeon_device *rdev)
        return -1;
 }
 
+uint32_t rs780_mc_rreg(struct radeon_device *rdev, uint32_t reg)
+{
+       uint32_t r;
+
+       WREG32(R_0028F8_MC_INDEX, S_0028F8_MC_IND_ADDR(reg));
+       r = RREG32(R_0028FC_MC_DATA);
+       WREG32(R_0028F8_MC_INDEX, ~C_0028F8_MC_IND_ADDR);
+       return r;
+}
+
+void rs780_mc_wreg(struct radeon_device *rdev, uint32_t reg, uint32_t v)
+{
+       WREG32(R_0028F8_MC_INDEX, S_0028F8_MC_IND_ADDR(reg) |
+               S_0028F8_MC_IND_WR_EN(1));
+       WREG32(R_0028FC_MC_DATA, v);
+       WREG32(R_0028F8_MC_INDEX, 0x7F);
+}
+
 static void r600_mc_program(struct radeon_device *rdev)
 {
        struct rv515_mc_save save;
@@ -1181,6 +1199,8 @@ static int r600_mc_init(struct radeon_device *rdev)
 {
        u32 tmp;
        int chansize, numchan;
+       uint32_t h_addr, l_addr;
+       unsigned long long k8_addr;
 
        /* Get VRAM informations */
        rdev->mc.vram_is_ddr = true;
@@ -1221,7 +1241,30 @@ static int r600_mc_init(struct radeon_device *rdev)
        if (rdev->flags & RADEON_IS_IGP) {
                rs690_pm_info(rdev);
                rdev->mc.igp_sideport_enabled = radeon_atombios_sideport_present(rdev);
+
+               if (rdev->family == CHIP_RS780 || rdev->family == CHIP_RS880) {
+                       /* Use K8 direct mapping for fast fb access. */
+                       rdev->fastfb_working = false;
+                       h_addr = G_000012_K8_ADDR_EXT(RREG32_MC(R_000012_MC_MISC_UMA_CNTL));
+                       l_addr = RREG32_MC(R_000011_K8_FB_LOCATION);
+                       k8_addr = ((unsigned long long)h_addr) << 32 | l_addr;
+#if defined(CONFIG_X86_32) && !defined(CONFIG_X86_PAE)
+                       if (k8_addr + rdev->mc.visible_vram_size < 0x100000000ULL)
+#endif
+                       {
+                               /* FastFB shall be used with UMA memory. Here it is simply disabled when sideport
+                               * memory is present.
+                               */
+                               if (rdev->mc.igp_sideport_enabled == false && radeon_fastfb == 1) {
+                                       DRM_INFO("Direct mapping: aper base at 0x%llx, replaced by direct mapping base 0x%llx.\n",
+                                               (unsigned long long)rdev->mc.aper_base, k8_addr);
+                                       rdev->mc.aper_base = (resource_size_t)k8_addr;
+                                       rdev->fastfb_working = true;
+                               }
+                       }
+               }
        }
+
        radeon_update_bandwidth_info(rdev);
        return 0;
 }
@@ -3202,6 +3245,12 @@ static int r600_startup(struct radeon_device *rdev)
        }
 
        /* Enable IRQ */
+       if (!rdev->irq.installed) {
+               r = radeon_irq_kms_init(rdev);
+               if (r)
+                       return r;
+       }
+
        r = r600_irq_init(rdev);
        if (r) {
                DRM_ERROR("radeon: IH init failed (%d).\n", r);
@@ -3356,10 +3405,6 @@ int r600_init(struct radeon_device *rdev)
        if (r)
                return r;
 
-       r = radeon_irq_kms_init(rdev);
-       if (r)
-               return r;
-
        rdev->ring[RADEON_RING_TYPE_GFX_INDEX].ring_obj = NULL;
        r600_ring_init(rdev, &rdev->ring[RADEON_RING_TYPE_GFX_INDEX], 1024 * 1024);
 
@@ -4631,8 +4676,6 @@ static void r600_pcie_gen2_enable(struct radeon_device *rdev)
 {
        u32 link_width_cntl, lanes, speed_cntl, training_cntl, tmp;
        u16 link_cntl2;
-       u32 mask;
-       int ret;
 
        if (radeon_pcie_gen2 == 0)
                return;
@@ -4651,11 +4694,8 @@ static void r600_pcie_gen2_enable(struct radeon_device *rdev)
        if (rdev->family <= CHIP_R600)
                return;
 
-       ret = drm_pcie_get_speed_cap_mask(rdev->ddev, &mask);
-       if (ret != 0)
-               return;
-
-       if (!(mask & DRM_PCIE_SPEED_50))
+       if ((rdev->pdev->bus->max_bus_speed != PCIE_SPEED_5_0GT) &&
+               (rdev->pdev->bus->max_bus_speed != PCIE_SPEED_8_0GT))
                return;
 
        speed_cntl = RREG32_PCIE_PORT(PCIE_LC_SPEED_CNTL);