This patch sets up the gart in legacy mode. We probably want to switch to full VM mode at some point.
Signed-off-by: Alex Deucher alexdeucher@gmail.com --- drivers/gpu/drm/radeon/ni.c | 92 ++++++++++++++++++++++++++++++++++++++++++ drivers/gpu/drm/radeon/nid.h | 57 ++++++++++++++++++++++++++ 2 files changed, 149 insertions(+), 0 deletions(-)
diff --git a/drivers/gpu/drm/radeon/ni.c b/drivers/gpu/drm/radeon/ni.c index eaefb5b..417d9c2 100644 --- a/drivers/gpu/drm/radeon/ni.c +++ b/drivers/gpu/drm/radeon/ni.c @@ -931,3 +931,95 @@ static void cayman_gpu_init(struct radeon_device *rdev) udelay(50); }
+/* + * GART + */ +void cayman_pcie_gart_tlb_flush(struct radeon_device *rdev) +{ + /* flush hdp cache */ + WREG32(HDP_MEM_COHERENCY_FLUSH_CNTL, 0x1); + + /* bits 0-7 are the VM contexts0-7 */ + WREG32(VM_INVALIDATE_REQUEST, 1); +} + +int cayman_pcie_gart_enable(struct radeon_device *rdev) +{ + int r; + + if (rdev->gart.table.vram.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, ENABLE_L1_TLB | + ENABLE_L1_FRAGMENT_PROCESSING | + SYSTEM_ACCESS_MODE_NOT_IN_SYS | + SYSTEM_APERTURE_UNMAPPED_ACCESS_PASS_THRU); + /* Setup L2 cache */ + WREG32(VM_L2_CNTL, ENABLE_L2_CACHE | + 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); + /* disable context1-7 */ + WREG32(VM_CONTEXT1_CNTL2, 0); + WREG32(VM_CONTEXT1_CNTL, 0); + + cayman_pcie_gart_tlb_flush(rdev); + rdev->gart.ready = true; + return 0; +} + +void cayman_pcie_gart_disable(struct radeon_device *rdev) +{ + int r; + + /* Disable all tables */ + WREG32(VM_CONTEXT0_CNTL, 0); + WREG32(VM_CONTEXT1_CNTL, 0); + /* Setup TLB control */ + WREG32(MC_VM_MX_L1_TLB_CNTL, ENABLE_L1_FRAGMENT_PROCESSING | + SYSTEM_ACCESS_MODE_NOT_IN_SYS | + SYSTEM_APERTURE_UNMAPPED_ACCESS_PASS_THRU); + /* Setup L2 cache */ + WREG32(VM_L2_CNTL, 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)); + if (rdev->gart.table.vram.robj) { + r = radeon_bo_reserve(rdev->gart.table.vram.robj, false); + if (likely(r == 0)) { + radeon_bo_kunmap(rdev->gart.table.vram.robj); + radeon_bo_unpin(rdev->gart.table.vram.robj); + radeon_bo_unreserve(rdev->gart.table.vram.robj); + } + } +} + +void cayman_pcie_gart_fini(struct radeon_device *rdev) +{ + cayman_pcie_gart_disable(rdev); + radeon_gart_table_vram_free(rdev); + radeon_gart_fini(rdev); +} + diff --git a/drivers/gpu/drm/radeon/nid.h b/drivers/gpu/drm/radeon/nid.h index b4ba1b0..9dc2b34 100644 --- a/drivers/gpu/drm/radeon/nid.h +++ b/drivers/gpu/drm/radeon/nid.h @@ -43,10 +43,66 @@
#define DMIF_ADDR_CONFIG 0xBD4
+#define VM_CONTEXT0_REQUEST_RESPONSE 0x1470 +#define REQUEST_TYPE(x) (((x) & 0xf) << 0) +#define RESPONSE_TYPE_MASK 0x000000F0 +#define RESPONSE_TYPE_SHIFT 4 +#define VM_L2_CNTL 0x1400 +#define ENABLE_L2_CACHE (1 << 0) +#define ENABLE_L2_FRAGMENT_PROCESSING (1 << 1) +#define ENABLE_L2_PTE_CACHE_LRU_UPDATE_BY_WRITE (1 << 9) +#define ENABLE_L2_PDE0_CACHE_LRU_UPDATE_BY_WRITE (1 << 10) +#define EFFECTIVE_L2_QUEUE_SIZE(x) (((x) & 7) << 14) +#define CONTEXT1_IDENTITY_ACCESS_MODE(x) (((x) & 3) << 18) +/* CONTEXT1_IDENTITY_ACCESS_MODE + * 0 physical = logical + * 1 logical via context1 page table + * 2 inside identity aperture use translation, outside physical = logical + * 3 inside identity aperture physical = logical, outside use translation + */ +#define VM_L2_CNTL2 0x1404 +#define INVALIDATE_ALL_L1_TLBS (1 << 0) +#define INVALIDATE_L2_CACHE (1 << 1) +#define VM_L2_CNTL3 0x1408 +#define BANK_SELECT(x) ((x) << 0) +#define CACHE_UPDATE_MODE(x) ((x) << 6) +#define L2_CACHE_BIGK_ASSOCIATIVITY (1 << 20) +#define L2_CACHE_BIGK_FRAGMENT_SIZE(x) ((x) << 15) +#define VM_L2_STATUS 0x140C +#define L2_BUSY (1 << 0) +#define VM_CONTEXT0_CNTL 0x1410 +#define ENABLE_CONTEXT (1 << 0) +#define PAGE_TABLE_DEPTH(x) (((x) & 3) << 1) +#define RANGE_PROTECTION_FAULT_ENABLE_DEFAULT (1 << 4) +#define VM_CONTEXT1_CNTL 0x1414 +#define VM_CONTEXT0_CNTL2 0x1430 +#define VM_CONTEXT1_CNTL2 0x1434 +#define VM_INVALIDATE_REQUEST 0x1478 +#define VM_INVALIDATE_RESPONSE 0x147c +#define VM_CONTEXT0_PROTECTION_FAULT_DEFAULT_ADDR 0x1518 +#define VM_CONTEXT1_PROTECTION_FAULT_DEFAULT_ADDR 0x151c +#define VM_CONTEXT0_PAGE_TABLE_BASE_ADDR 0x153C +#define VM_CONTEXT0_PAGE_TABLE_START_ADDR 0x155C +#define VM_CONTEXT0_PAGE_TABLE_END_ADDR 0x157C + #define MC_SHARED_CHMAP 0x2004 #define NOOFCHAN_SHIFT 12 #define NOOFCHAN_MASK 0x00003000 #define MC_SHARED_CHREMAP 0x2008 + +#define MC_VM_SYSTEM_APERTURE_LOW_ADDR 0x2034 +#define MC_VM_SYSTEM_APERTURE_HIGH_ADDR 0x2038 +#define MC_VM_SYSTEM_APERTURE_DEFAULT_ADDR 0x203C +#define MC_VM_MX_L1_TLB_CNTL 0x2064 +#define ENABLE_L1_TLB (1 << 0) +#define ENABLE_L1_FRAGMENT_PROCESSING (1 << 1) +#define SYSTEM_ACCESS_MODE_PA_ONLY (0 << 3) +#define SYSTEM_ACCESS_MODE_USE_SYS_MAP (1 << 3) +#define SYSTEM_ACCESS_MODE_IN_SYS (2 << 3) +#define SYSTEM_ACCESS_MODE_NOT_IN_SYS (3 << 3) +#define SYSTEM_APERTURE_UNMAPPED_ACCESS_PASS_THRU (0 << 5) +#define ENABLE_ADVANCED_DRIVER_MODEL (1 << 6) + #define MC_SHARED_BLACKOUT_CNTL 0x20ac #define MC_ARB_RAMCFG 0x2760 #define NOOFBANK_SHIFT 0 @@ -87,6 +143,7 @@
#define CONFIG_MEMSIZE 0x5428
+#define HDP_MEM_COHERENCY_FLUSH_CNTL 0x5480 #define HDP_REG_COHERENCY_FLUSH_CNTL 0x54A0
#define GRBM_CNTL 0x8000