drm/radeon: add support for MC/VM setup on CIK (v6)
The vm callbacks are the same as the SI ones right now
(same regs and bits). We could share the SI variants, and
I may yet do that, but I figured I would add CIK specific
ones for now in case we need to change anything.
V2: add documentation, minor fixes.
V3: integrate vram offset fixes for APUs
V4: enable 2 level VM PTs
V5: index SH_MEM_* regs properly
V6: add ib_parse()
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/radeon/cik.c b/drivers/gpu/drm/radeon/cik.c
index e448ae2..a4e1b95 100644
--- a/drivers/gpu/drm/radeon/cik.c
+++ b/drivers/gpu/drm/radeon/cik.c
@@ -33,6 +33,7 @@
extern void evergreen_mc_stop(struct radeon_device *rdev, struct evergreen_mc_save *save);
extern void evergreen_mc_resume(struct radeon_device *rdev, struct evergreen_mc_save *save);
+extern void si_vram_gtt_location(struct radeon_device *rdev, struct radeon_mc *mc);
/*
* Core functions
@@ -1387,3 +1388,363 @@
return cik_gfx_gpu_soft_reset(rdev);
}
+
+/* MC */
+/**
+ * cik_mc_program - program the GPU memory controller
+ *
+ * @rdev: radeon_device pointer
+ *
+ * Set the location of vram, gart, and AGP in the GPU's
+ * physical address space (CIK).
+ */
+static void cik_mc_program(struct radeon_device *rdev)
+{
+ struct evergreen_mc_save save;
+ u32 tmp;
+ int i, j;
+
+ /* Initialize HDP */
+ for (i = 0, j = 0; i < 32; i++, j += 0x18) {
+ WREG32((0x2c14 + j), 0x00000000);
+ WREG32((0x2c18 + j), 0x00000000);
+ WREG32((0x2c1c + j), 0x00000000);
+ WREG32((0x2c20 + j), 0x00000000);
+ WREG32((0x2c24 + j), 0x00000000);
+ }
+ WREG32(HDP_REG_COHERENCY_FLUSH_CNTL, 0);
+
+ evergreen_mc_stop(rdev, &save);
+ if (radeon_mc_wait_for_idle(rdev)) {
+ dev_warn(rdev->dev, "Wait for MC idle timedout !\n");
+ }
+ /* Lockout access through VGA aperture*/
+ WREG32(VGA_HDP_CONTROL, VGA_MEMORY_DISABLE);
+ /* Update configuration */
+ WREG32(MC_VM_SYSTEM_APERTURE_LOW_ADDR,
+ rdev->mc.vram_start >> 12);
+ WREG32(MC_VM_SYSTEM_APERTURE_HIGH_ADDR,
+ rdev->mc.vram_end >> 12);
+ WREG32(MC_VM_SYSTEM_APERTURE_DEFAULT_ADDR,
+ rdev->vram_scratch.gpu_addr >> 12);
+ tmp = ((rdev->mc.vram_end >> 24) & 0xFFFF) << 16;
+ tmp |= ((rdev->mc.vram_start >> 24) & 0xFFFF);
+ WREG32(MC_VM_FB_LOCATION, tmp);
+ /* XXX double check these! */
+ WREG32(HDP_NONSURFACE_BASE, (rdev->mc.vram_start >> 8));
+ WREG32(HDP_NONSURFACE_INFO, (2 << 7) | (1 << 30));
+ WREG32(HDP_NONSURFACE_SIZE, 0x3FFFFFFF);
+ WREG32(MC_VM_AGP_BASE, 0);
+ WREG32(MC_VM_AGP_TOP, 0x0FFFFFFF);
+ WREG32(MC_VM_AGP_BOT, 0x0FFFFFFF);
+ if (radeon_mc_wait_for_idle(rdev)) {
+ dev_warn(rdev->dev, "Wait for MC idle timedout !\n");
+ }
+ evergreen_mc_resume(rdev, &save);
+ /* we need to own VRAM, so turn off the VGA renderer here
+ * to stop it overwriting our objects */
+ rv515_vga_render_disable(rdev);
+}
+
+/**
+ * cik_mc_init - initialize the memory controller driver params
+ *
+ * @rdev: radeon_device pointer
+ *
+ * Look up the amount of vram, vram width, and decide how to place
+ * vram and gart within the GPU's physical address space (CIK).
+ * Returns 0 for success.
+ */
+static int cik_mc_init(struct radeon_device *rdev)
+{
+ u32 tmp;
+ int chansize, numchan;
+
+ /* Get VRAM informations */
+ rdev->mc.vram_is_ddr = true;
+ tmp = RREG32(MC_ARB_RAMCFG);
+ 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;
+ case 4:
+ numchan = 3;
+ break;
+ case 5:
+ numchan = 6;
+ break;
+ case 6:
+ numchan = 10;
+ break;
+ case 7:
+ numchan = 12;
+ break;
+ case 8:
+ numchan = 16;
+ break;
+ }
+ rdev->mc.vram_width = numchan * chansize;
+ /* Could aper size report 0 ? */
+ rdev->mc.aper_base = pci_resource_start(rdev->pdev, 0);
+ rdev->mc.aper_size = pci_resource_len(rdev->pdev, 0);
+ /* size in MB on si */
+ 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;
+ si_vram_gtt_location(rdev, &rdev->mc);
+ radeon_update_bandwidth_info(rdev);
+
+ return 0;
+}
+
+/*
+ * GART
+ * VMID 0 is the physical GPU addresses as used by the kernel.
+ * VMIDs 1-15 are used for userspace clients and are handled
+ * by the radeon vm/hsa code.
+ */
+/**
+ * cik_pcie_gart_tlb_flush - gart tlb flush callback
+ *
+ * @rdev: radeon_device pointer
+ *
+ * Flush the TLB for the VMID 0 page table (CIK).
+ */
+void cik_pcie_gart_tlb_flush(struct radeon_device *rdev)
+{
+ /* flush hdp cache */
+ WREG32(HDP_MEM_COHERENCY_FLUSH_CNTL, 0);
+
+ /* bits 0-15 are the VM contexts0-15 */
+ WREG32(VM_INVALIDATE_REQUEST, 0x1);
+}
+
+/**
+ * cik_pcie_gart_enable - gart enable
+ *
+ * @rdev: radeon_device pointer
+ *
+ * This sets up the TLBs, programs the page tables for VMID0,
+ * sets up the hw for VMIDs 1-15 which are allocated on
+ * demand, and sets up the global locations for the LDS, GDS,
+ * and GPUVM for FSA64 clients (CIK).
+ * Returns 0 for success, errors for failure.
+ */
+static int cik_pcie_gart_enable(struct radeon_device *rdev)
+{
+ int r, i;
+
+ if (rdev->gart.robj == NULL) {
+ dev_err(rdev->dev, "No VRAM object for PCIE GART.\n");
+ return -EINVAL;
+ }
+ r = radeon_gart_table_vram_pin(rdev);
+ if (r)
+ return r;
+ radeon_gart_restore(rdev);
+ /* Setup TLB control */
+ WREG32(MC_VM_MX_L1_TLB_CNTL,
+ (0xA << 7) |
+ ENABLE_L1_TLB |
+ SYSTEM_ACCESS_MODE_NOT_IN_SYS |
+ ENABLE_ADVANCED_DRIVER_MODEL |
+ SYSTEM_APERTURE_UNMAPPED_ACCESS_PASS_THRU);
+ /* Setup L2 cache */
+ WREG32(VM_L2_CNTL, ENABLE_L2_CACHE |
+ ENABLE_L2_FRAGMENT_PROCESSING |
+ ENABLE_L2_PTE_CACHE_LRU_UPDATE_BY_WRITE |
+ ENABLE_L2_PDE0_CACHE_LRU_UPDATE_BY_WRITE |
+ EFFECTIVE_L2_QUEUE_SIZE(7) |
+ CONTEXT1_IDENTITY_ACCESS_MODE(1));
+ WREG32(VM_L2_CNTL2, INVALIDATE_ALL_L1_TLBS | INVALIDATE_L2_CACHE);
+ WREG32(VM_L2_CNTL3, L2_CACHE_BIGK_ASSOCIATIVITY |
+ L2_CACHE_BIGK_FRAGMENT_SIZE(6));
+ /* setup context0 */
+ WREG32(VM_CONTEXT0_PAGE_TABLE_START_ADDR, rdev->mc.gtt_start >> 12);
+ WREG32(VM_CONTEXT0_PAGE_TABLE_END_ADDR, rdev->mc.gtt_end >> 12);
+ WREG32(VM_CONTEXT0_PAGE_TABLE_BASE_ADDR, rdev->gart.table_addr >> 12);
+ WREG32(VM_CONTEXT0_PROTECTION_FAULT_DEFAULT_ADDR,
+ (u32)(rdev->dummy_page.addr >> 12));
+ WREG32(VM_CONTEXT0_CNTL2, 0);
+ WREG32(VM_CONTEXT0_CNTL, (ENABLE_CONTEXT | PAGE_TABLE_DEPTH(0) |
+ RANGE_PROTECTION_FAULT_ENABLE_DEFAULT));
+
+ WREG32(0x15D4, 0);
+ WREG32(0x15D8, 0);
+ WREG32(0x15DC, 0);
+
+ /* empty context1-15 */
+ /* FIXME start with 4G, once using 2 level pt switch to full
+ * vm size space
+ */
+ /* set vm size, must be a multiple of 4 */
+ WREG32(VM_CONTEXT1_PAGE_TABLE_START_ADDR, 0);
+ WREG32(VM_CONTEXT1_PAGE_TABLE_END_ADDR, rdev->vm_manager.max_pfn);
+ for (i = 1; i < 16; i++) {
+ if (i < 8)
+ WREG32(VM_CONTEXT0_PAGE_TABLE_BASE_ADDR + (i << 2),
+ rdev->gart.table_addr >> 12);
+ else
+ WREG32(VM_CONTEXT8_PAGE_TABLE_BASE_ADDR + ((i - 8) << 2),
+ rdev->gart.table_addr >> 12);
+ }
+
+ /* enable context1-15 */
+ WREG32(VM_CONTEXT1_PROTECTION_FAULT_DEFAULT_ADDR,
+ (u32)(rdev->dummy_page.addr >> 12));
+ WREG32(VM_CONTEXT1_CNTL2, 0);
+ WREG32(VM_CONTEXT1_CNTL, ENABLE_CONTEXT | PAGE_TABLE_DEPTH(1) |
+ RANGE_PROTECTION_FAULT_ENABLE_DEFAULT);
+
+ /* TC cache setup ??? */
+ WREG32(TC_CFG_L1_LOAD_POLICY0, 0);
+ WREG32(TC_CFG_L1_LOAD_POLICY1, 0);
+ WREG32(TC_CFG_L1_STORE_POLICY, 0);
+
+ WREG32(TC_CFG_L2_LOAD_POLICY0, 0);
+ WREG32(TC_CFG_L2_LOAD_POLICY1, 0);
+ WREG32(TC_CFG_L2_STORE_POLICY0, 0);
+ WREG32(TC_CFG_L2_STORE_POLICY1, 0);
+ WREG32(TC_CFG_L2_ATOMIC_POLICY, 0);
+
+ WREG32(TC_CFG_L1_VOLATILE, 0);
+ WREG32(TC_CFG_L2_VOLATILE, 0);
+
+ if (rdev->family == CHIP_KAVERI) {
+ u32 tmp = RREG32(CHUB_CONTROL);
+ tmp &= ~BYPASS_VM;
+ WREG32(CHUB_CONTROL, tmp);
+ }
+
+ /* XXX SH_MEM regs */
+ /* where to put LDS, scratch, GPUVM in FSA64 space */
+ for (i = 0; i < 16; i++) {
+ WREG32(SRBM_GFX_CNTL, VMID(i));
+ WREG32(SH_MEM_CONFIG, 0);
+ WREG32(SH_MEM_APE1_BASE, 1);
+ WREG32(SH_MEM_APE1_LIMIT, 0);
+ WREG32(SH_MEM_BASES, 0);
+ }
+ WREG32(SRBM_GFX_CNTL, 0);
+
+ cik_pcie_gart_tlb_flush(rdev);
+ DRM_INFO("PCIE GART of %uM enabled (table at 0x%016llX).\n",
+ (unsigned)(rdev->mc.gtt_size >> 20),
+ (unsigned long long)rdev->gart.table_addr);
+ rdev->gart.ready = true;
+ return 0;
+}
+
+/**
+ * cik_pcie_gart_disable - gart disable
+ *
+ * @rdev: radeon_device pointer
+ *
+ * This disables all VM page table (CIK).
+ */
+static void cik_pcie_gart_disable(struct radeon_device *rdev)
+{
+ /* Disable all tables */
+ WREG32(VM_CONTEXT0_CNTL, 0);
+ WREG32(VM_CONTEXT1_CNTL, 0);
+ /* Setup TLB control */
+ WREG32(MC_VM_MX_L1_TLB_CNTL, SYSTEM_ACCESS_MODE_NOT_IN_SYS |
+ SYSTEM_APERTURE_UNMAPPED_ACCESS_PASS_THRU);
+ /* Setup L2 cache */
+ WREG32(VM_L2_CNTL,
+ ENABLE_L2_FRAGMENT_PROCESSING |
+ ENABLE_L2_PTE_CACHE_LRU_UPDATE_BY_WRITE |
+ ENABLE_L2_PDE0_CACHE_LRU_UPDATE_BY_WRITE |
+ EFFECTIVE_L2_QUEUE_SIZE(7) |
+ CONTEXT1_IDENTITY_ACCESS_MODE(1));
+ WREG32(VM_L2_CNTL2, 0);
+ WREG32(VM_L2_CNTL3, L2_CACHE_BIGK_ASSOCIATIVITY |
+ L2_CACHE_BIGK_FRAGMENT_SIZE(6));
+ radeon_gart_table_vram_unpin(rdev);
+}
+
+/**
+ * cik_pcie_gart_fini - vm fini callback
+ *
+ * @rdev: radeon_device pointer
+ *
+ * Tears down the driver GART/VM setup (CIK).
+ */
+static void cik_pcie_gart_fini(struct radeon_device *rdev)
+{
+ cik_pcie_gart_disable(rdev);
+ radeon_gart_table_vram_free(rdev);
+ radeon_gart_fini(rdev);
+}
+
+/* vm parser */
+/**
+ * cik_ib_parse - vm ib_parse callback
+ *
+ * @rdev: radeon_device pointer
+ * @ib: indirect buffer pointer
+ *
+ * CIK uses hw IB checking so this is a nop (CIK).
+ */
+int cik_ib_parse(struct radeon_device *rdev, struct radeon_ib *ib)
+{
+ return 0;
+}
+
+/*
+ * vm
+ * VMID 0 is the physical GPU addresses as used by the kernel.
+ * VMIDs 1-15 are used for userspace clients and are handled
+ * by the radeon vm/hsa code.
+ */
+/**
+ * cik_vm_init - cik vm init callback
+ *
+ * @rdev: radeon_device pointer
+ *
+ * Inits cik specific vm parameters (number of VMs, base of vram for
+ * VMIDs 1-15) (CIK).
+ * Returns 0 for success.
+ */
+int cik_vm_init(struct radeon_device *rdev)
+{
+ /* number of VMs */
+ rdev->vm_manager.nvm = 16;
+ /* base offset of vram pages */
+ if (rdev->flags & RADEON_IS_IGP) {
+ u64 tmp = RREG32(MC_VM_FB_OFFSET);
+ tmp <<= 22;
+ rdev->vm_manager.vram_base_offset = tmp;
+ } else
+ rdev->vm_manager.vram_base_offset = 0;
+
+ return 0;
+}
+
+/**
+ * cik_vm_fini - cik vm fini callback
+ *
+ * @rdev: radeon_device pointer
+ *
+ * Tear down any asic specific VM setup (CIK).
+ */
+void cik_vm_fini(struct radeon_device *rdev)
+{
+}
+