2 * Copyright 2013 Advanced Micro Devices, Inc.
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:
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
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.
22 * Authors: Alex Deucher
26 #include "radeon_asic.h"
29 u32 si_gpu_check_soft_reset(struct radeon_device *rdev);
32 * si_dma_is_lockup - Check if the DMA engine is locked up
34 * @rdev: radeon_device pointer
35 * @ring: radeon_ring structure holding ring information
37 * Check if the async DMA engine is locked up.
38 * Returns true if the engine appears to be locked up, false if not.
40 bool si_dma_is_lockup(struct radeon_device *rdev, struct radeon_ring *ring)
42 u32 reset_mask = si_gpu_check_soft_reset(rdev);
45 if (ring->idx == R600_RING_TYPE_DMA_INDEX)
46 mask = RADEON_RESET_DMA;
48 mask = RADEON_RESET_DMA1;
50 if (!(reset_mask & mask)) {
51 radeon_ring_lockup_update(ring);
54 /* force ring activities */
55 radeon_ring_force_activity(rdev, ring);
56 return radeon_ring_test_lockup(rdev, ring);
60 * si_dma_vm_set_page - update the page tables using the DMA
62 * @rdev: radeon_device pointer
63 * @ib: indirect buffer to fill with commands
64 * @pe: addr of the page entry
65 * @addr: dst addr to write into pe
66 * @count: number of page entries to update
67 * @incr: increase next addr by incr bytes
68 * @flags: access flags
70 * Update the page tables using the DMA (SI).
72 void si_dma_vm_set_page(struct radeon_device *rdev,
75 uint64_t addr, unsigned count,
76 uint32_t incr, uint32_t flags)
78 uint32_t r600_flags = cayman_vm_page_flags(rdev, flags);
82 if (flags & RADEON_VM_PAGE_SYSTEM) {
88 /* for non-physically contiguous pages (system) */
89 ib->ptr[ib->length_dw++] = DMA_PACKET(DMA_PACKET_WRITE, 0, 0, 0, ndw);
90 ib->ptr[ib->length_dw++] = pe;
91 ib->ptr[ib->length_dw++] = upper_32_bits(pe) & 0xff;
92 for (; ndw > 0; ndw -= 2, --count, pe += 8) {
93 if (flags & RADEON_VM_PAGE_SYSTEM) {
94 value = radeon_vm_map_gart(rdev, addr);
95 value &= 0xFFFFFFFFFFFFF000ULL;
96 } else if (flags & RADEON_VM_PAGE_VALID) {
103 ib->ptr[ib->length_dw++] = value;
104 ib->ptr[ib->length_dw++] = upper_32_bits(value);
113 if (flags & RADEON_VM_PAGE_VALID)
117 /* for physically contiguous pages (vram) */
118 ib->ptr[ib->length_dw++] = DMA_PTE_PDE_PACKET(ndw);
119 ib->ptr[ib->length_dw++] = pe; /* dst addr */
120 ib->ptr[ib->length_dw++] = upper_32_bits(pe) & 0xff;
121 ib->ptr[ib->length_dw++] = r600_flags; /* mask */
122 ib->ptr[ib->length_dw++] = 0;
123 ib->ptr[ib->length_dw++] = value; /* value */
124 ib->ptr[ib->length_dw++] = upper_32_bits(value);
125 ib->ptr[ib->length_dw++] = incr; /* increment size */
126 ib->ptr[ib->length_dw++] = 0;
128 addr += (ndw / 2) * incr;
132 while (ib->length_dw & 0x7)
133 ib->ptr[ib->length_dw++] = DMA_PACKET(DMA_PACKET_NOP, 0, 0, 0, 0);
136 void si_dma_vm_flush(struct radeon_device *rdev, int ridx, struct radeon_vm *vm)
138 struct radeon_ring *ring = &rdev->ring[ridx];
143 radeon_ring_write(ring, DMA_PACKET(DMA_PACKET_SRBM_WRITE, 0, 0, 0, 0));
145 radeon_ring_write(ring, (0xf << 16) | ((VM_CONTEXT0_PAGE_TABLE_BASE_ADDR + (vm->id << 2)) >> 2));
147 radeon_ring_write(ring, (0xf << 16) | ((VM_CONTEXT8_PAGE_TABLE_BASE_ADDR + ((vm->id - 8) << 2)) >> 2));
149 radeon_ring_write(ring, vm->pd_gpu_addr >> 12);
151 /* flush hdp cache */
152 radeon_ring_write(ring, DMA_PACKET(DMA_PACKET_SRBM_WRITE, 0, 0, 0, 0));
153 radeon_ring_write(ring, (0xf << 16) | (HDP_MEM_COHERENCY_FLUSH_CNTL >> 2));
154 radeon_ring_write(ring, 1);
156 /* bits 0-7 are the VM contexts0-7 */
157 radeon_ring_write(ring, DMA_PACKET(DMA_PACKET_SRBM_WRITE, 0, 0, 0, 0));
158 radeon_ring_write(ring, (0xf << 16) | (VM_INVALIDATE_REQUEST >> 2));
159 radeon_ring_write(ring, 1 << vm->id);
163 * si_copy_dma - copy pages using the DMA engine
165 * @rdev: radeon_device pointer
166 * @src_offset: src GPU address
167 * @dst_offset: dst GPU address
168 * @num_gpu_pages: number of GPU pages to xfer
169 * @fence: radeon fence object
171 * Copy GPU paging using the DMA engine (SI).
172 * Used by the radeon ttm implementation to move pages if
173 * registered as the asic copy callback.
175 int si_copy_dma(struct radeon_device *rdev,
176 uint64_t src_offset, uint64_t dst_offset,
177 unsigned num_gpu_pages,
178 struct radeon_fence **fence)
180 struct radeon_semaphore *sem = NULL;
181 int ring_index = rdev->asic->copy.dma_ring_index;
182 struct radeon_ring *ring = &rdev->ring[ring_index];
183 u32 size_in_bytes, cur_size_in_bytes;
187 r = radeon_semaphore_create(rdev, &sem);
189 DRM_ERROR("radeon: moving bo (%d).\n", r);
193 size_in_bytes = (num_gpu_pages << RADEON_GPU_PAGE_SHIFT);
194 num_loops = DIV_ROUND_UP(size_in_bytes, 0xfffff);
195 r = radeon_ring_lock(rdev, ring, num_loops * 5 + 11);
197 DRM_ERROR("radeon: moving bo (%d).\n", r);
198 radeon_semaphore_free(rdev, &sem, NULL);
202 if (radeon_fence_need_sync(*fence, ring->idx)) {
203 radeon_semaphore_sync_rings(rdev, sem, (*fence)->ring,
205 radeon_fence_note_sync(*fence, ring->idx);
207 radeon_semaphore_free(rdev, &sem, NULL);
210 for (i = 0; i < num_loops; i++) {
211 cur_size_in_bytes = size_in_bytes;
212 if (cur_size_in_bytes > 0xFFFFF)
213 cur_size_in_bytes = 0xFFFFF;
214 size_in_bytes -= cur_size_in_bytes;
215 radeon_ring_write(ring, DMA_PACKET(DMA_PACKET_COPY, 1, 0, 0, cur_size_in_bytes));
216 radeon_ring_write(ring, dst_offset & 0xffffffff);
217 radeon_ring_write(ring, src_offset & 0xffffffff);
218 radeon_ring_write(ring, upper_32_bits(dst_offset) & 0xff);
219 radeon_ring_write(ring, upper_32_bits(src_offset) & 0xff);
220 src_offset += cur_size_in_bytes;
221 dst_offset += cur_size_in_bytes;
224 r = radeon_fence_emit(rdev, fence, ring->idx);
226 radeon_ring_unlock_undo(rdev, ring);
230 radeon_ring_unlock_commit(rdev, ring);
231 radeon_semaphore_free(rdev, &sem, *fence);