1 /* 2 * Copyright 2013 Advanced Micro Devices, Inc. 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice shall be included in 12 * all copies or substantial portions of the Software. 13 * 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 20 * OTHER DEALINGS IN THE SOFTWARE. 21 * 22 * Authors: Alex Deucher 23 */ 24 #include <drm/drmP.h> 25 #include "radeon.h" 26 #include "radeon_asic.h" 27 #include "radeon_trace.h" 28 #include "sid.h" 29 30 u32 si_gpu_check_soft_reset(struct radeon_device *rdev); 31 32 /** 33 * si_dma_is_lockup - Check if the DMA engine is locked up 34 * 35 * @rdev: radeon_device pointer 36 * @ring: radeon_ring structure holding ring information 37 * 38 * Check if the async DMA engine is locked up. 39 * Returns true if the engine appears to be locked up, false if not. 40 */ 41 bool si_dma_is_lockup(struct radeon_device *rdev, struct radeon_ring *ring) 42 { 43 u32 reset_mask = si_gpu_check_soft_reset(rdev); 44 u32 mask; 45 46 if (ring->idx == R600_RING_TYPE_DMA_INDEX) 47 mask = RADEON_RESET_DMA; 48 else 49 mask = RADEON_RESET_DMA1; 50 51 if (!(reset_mask & mask)) { 52 radeon_ring_lockup_update(rdev, ring); 53 return false; 54 } 55 return radeon_ring_test_lockup(rdev, ring); 56 } 57 58 /** 59 * si_dma_vm_set_page - update the page tables using the DMA 60 * 61 * @rdev: radeon_device pointer 62 * @ib: indirect buffer to fill with commands 63 * @pe: addr of the page entry 64 * @addr: dst addr to write into pe 65 * @count: number of page entries to update 66 * @incr: increase next addr by incr bytes 67 * @flags: access flags 68 * 69 * Update the page tables using the DMA (SI). 70 */ 71 void si_dma_vm_set_page(struct radeon_device *rdev, 72 struct radeon_ib *ib, 73 uint64_t pe, 74 uint64_t addr, unsigned count, 75 uint32_t incr, uint32_t flags) 76 { 77 uint64_t value; 78 unsigned ndw; 79 80 trace_radeon_vm_set_page(pe, addr, count, incr, flags); 81 82 if (flags == R600_PTE_GART) { 83 uint64_t src = rdev->gart.table_addr + (addr >> 12) * 8; 84 while (count) { 85 unsigned bytes = count * 8; 86 if (bytes > 0xFFFF8) 87 bytes = 0xFFFF8; 88 89 ib->ptr[ib->length_dw++] = DMA_PACKET(DMA_PACKET_COPY, 90 1, 0, 0, bytes); 91 ib->ptr[ib->length_dw++] = lower_32_bits(pe); 92 ib->ptr[ib->length_dw++] = lower_32_bits(src); 93 ib->ptr[ib->length_dw++] = upper_32_bits(pe) & 0xff; 94 ib->ptr[ib->length_dw++] = upper_32_bits(src) & 0xff; 95 96 pe += bytes; 97 src += bytes; 98 count -= bytes / 8; 99 } 100 } else if (flags & R600_PTE_SYSTEM) { 101 while (count) { 102 ndw = count * 2; 103 if (ndw > 0xFFFFE) 104 ndw = 0xFFFFE; 105 106 /* for non-physically contiguous pages (system) */ 107 ib->ptr[ib->length_dw++] = DMA_PACKET(DMA_PACKET_WRITE, 0, 0, 0, ndw); 108 ib->ptr[ib->length_dw++] = pe; 109 ib->ptr[ib->length_dw++] = upper_32_bits(pe) & 0xff; 110 for (; ndw > 0; ndw -= 2, --count, pe += 8) { 111 value = radeon_vm_map_gart(rdev, addr); 112 value &= 0xFFFFFFFFFFFFF000ULL; 113 addr += incr; 114 value |= flags; 115 ib->ptr[ib->length_dw++] = value; 116 ib->ptr[ib->length_dw++] = upper_32_bits(value); 117 } 118 } 119 } else { 120 while (count) { 121 ndw = count * 2; 122 if (ndw > 0xFFFFE) 123 ndw = 0xFFFFE; 124 125 if (flags & R600_PTE_VALID) 126 value = addr; 127 else 128 value = 0; 129 /* for physically contiguous pages (vram) */ 130 ib->ptr[ib->length_dw++] = DMA_PTE_PDE_PACKET(ndw); 131 ib->ptr[ib->length_dw++] = pe; /* dst addr */ 132 ib->ptr[ib->length_dw++] = upper_32_bits(pe) & 0xff; 133 ib->ptr[ib->length_dw++] = flags; /* mask */ 134 ib->ptr[ib->length_dw++] = 0; 135 ib->ptr[ib->length_dw++] = value; /* value */ 136 ib->ptr[ib->length_dw++] = upper_32_bits(value); 137 ib->ptr[ib->length_dw++] = incr; /* increment size */ 138 ib->ptr[ib->length_dw++] = 0; 139 pe += ndw * 4; 140 addr += (ndw / 2) * incr; 141 count -= ndw / 2; 142 } 143 } 144 while (ib->length_dw & 0x7) 145 ib->ptr[ib->length_dw++] = DMA_PACKET(DMA_PACKET_NOP, 0, 0, 0, 0); 146 } 147 148 void si_dma_vm_flush(struct radeon_device *rdev, int ridx, struct radeon_vm *vm) 149 { 150 struct radeon_ring *ring = &rdev->ring[ridx]; 151 152 if (vm == NULL) 153 return; 154 155 radeon_ring_write(ring, DMA_PACKET(DMA_PACKET_SRBM_WRITE, 0, 0, 0, 0)); 156 if (vm->id < 8) { 157 radeon_ring_write(ring, (0xf << 16) | ((VM_CONTEXT0_PAGE_TABLE_BASE_ADDR + (vm->id << 2)) >> 2)); 158 } else { 159 radeon_ring_write(ring, (0xf << 16) | ((VM_CONTEXT8_PAGE_TABLE_BASE_ADDR + ((vm->id - 8) << 2)) >> 2)); 160 } 161 radeon_ring_write(ring, vm->pd_gpu_addr >> 12); 162 163 /* flush hdp cache */ 164 radeon_ring_write(ring, DMA_PACKET(DMA_PACKET_SRBM_WRITE, 0, 0, 0, 0)); 165 radeon_ring_write(ring, (0xf << 16) | (HDP_MEM_COHERENCY_FLUSH_CNTL >> 2)); 166 radeon_ring_write(ring, 1); 167 168 /* bits 0-7 are the VM contexts0-7 */ 169 radeon_ring_write(ring, DMA_PACKET(DMA_PACKET_SRBM_WRITE, 0, 0, 0, 0)); 170 radeon_ring_write(ring, (0xf << 16) | (VM_INVALIDATE_REQUEST >> 2)); 171 radeon_ring_write(ring, 1 << vm->id); 172 } 173 174 /** 175 * si_copy_dma - copy pages using the DMA engine 176 * 177 * @rdev: radeon_device pointer 178 * @src_offset: src GPU address 179 * @dst_offset: dst GPU address 180 * @num_gpu_pages: number of GPU pages to xfer 181 * @fence: radeon fence object 182 * 183 * Copy GPU paging using the DMA engine (SI). 184 * Used by the radeon ttm implementation to move pages if 185 * registered as the asic copy callback. 186 */ 187 int si_copy_dma(struct radeon_device *rdev, 188 uint64_t src_offset, uint64_t dst_offset, 189 unsigned num_gpu_pages, 190 struct radeon_fence **fence) 191 { 192 struct radeon_semaphore *sem = NULL; 193 int ring_index = rdev->asic->copy.dma_ring_index; 194 struct radeon_ring *ring = &rdev->ring[ring_index]; 195 u32 size_in_bytes, cur_size_in_bytes; 196 int i, num_loops; 197 int r = 0; 198 199 r = radeon_semaphore_create(rdev, &sem); 200 if (r) { 201 DRM_ERROR("radeon: moving bo (%d).\n", r); 202 return r; 203 } 204 205 size_in_bytes = (num_gpu_pages << RADEON_GPU_PAGE_SHIFT); 206 num_loops = DIV_ROUND_UP(size_in_bytes, 0xfffff); 207 r = radeon_ring_lock(rdev, ring, num_loops * 5 + 11); 208 if (r) { 209 DRM_ERROR("radeon: moving bo (%d).\n", r); 210 radeon_semaphore_free(rdev, &sem, NULL); 211 return r; 212 } 213 214 radeon_semaphore_sync_to(sem, *fence); 215 radeon_semaphore_sync_rings(rdev, sem, ring->idx); 216 217 for (i = 0; i < num_loops; i++) { 218 cur_size_in_bytes = size_in_bytes; 219 if (cur_size_in_bytes > 0xFFFFF) 220 cur_size_in_bytes = 0xFFFFF; 221 size_in_bytes -= cur_size_in_bytes; 222 radeon_ring_write(ring, DMA_PACKET(DMA_PACKET_COPY, 1, 0, 0, cur_size_in_bytes)); 223 radeon_ring_write(ring, lower_32_bits(dst_offset)); 224 radeon_ring_write(ring, lower_32_bits(src_offset)); 225 radeon_ring_write(ring, upper_32_bits(dst_offset) & 0xff); 226 radeon_ring_write(ring, upper_32_bits(src_offset) & 0xff); 227 src_offset += cur_size_in_bytes; 228 dst_offset += cur_size_in_bytes; 229 } 230 231 r = radeon_fence_emit(rdev, fence, ring->idx); 232 if (r) { 233 radeon_ring_unlock_undo(rdev, ring); 234 radeon_semaphore_free(rdev, &sem, NULL); 235 return r; 236 } 237 238 radeon_ring_unlock_commit(rdev, ring); 239 radeon_semaphore_free(rdev, &sem, *fence); 240 241 return r; 242 } 243 244