diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/si_dma.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/si_dma.c | 915 |
1 files changed, 915 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/si_dma.c b/drivers/gpu/drm/amd/amdgpu/si_dma.c new file mode 100644 index 000000000000..de358193a8f9 --- /dev/null +++ b/drivers/gpu/drm/amd/amdgpu/si_dma.c @@ -0,0 +1,915 @@ +/* + * Copyright 2015 Advanced Micro Devices, Inc. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + * + * Authors: Alex Deucher + */ +#include <drm/drmP.h> +#include "amdgpu.h" +#include "amdgpu_trace.h" +#include "si/sid.h" + +const u32 sdma_offsets[SDMA_MAX_INSTANCE] = +{ + DMA0_REGISTER_OFFSET, + DMA1_REGISTER_OFFSET +}; + +static void si_dma_set_ring_funcs(struct amdgpu_device *adev); +static void si_dma_set_buffer_funcs(struct amdgpu_device *adev); +static void si_dma_set_vm_pte_funcs(struct amdgpu_device *adev); +static void si_dma_set_irq_funcs(struct amdgpu_device *adev); + +static uint32_t si_dma_ring_get_rptr(struct amdgpu_ring *ring) +{ + return ring->adev->wb.wb[ring->rptr_offs>>2]; +} + +static uint32_t si_dma_ring_get_wptr(struct amdgpu_ring *ring) +{ + struct amdgpu_device *adev = ring->adev; + u32 me = (ring == &adev->sdma.instance[0].ring) ? 0 : 1; + + return (RREG32(DMA_RB_WPTR + sdma_offsets[me]) & 0x3fffc) >> 2; +} + +static void si_dma_ring_set_wptr(struct amdgpu_ring *ring) +{ + struct amdgpu_device *adev = ring->adev; + u32 me = (ring == &adev->sdma.instance[0].ring) ? 0 : 1; + + WREG32(DMA_RB_WPTR + sdma_offsets[me], (ring->wptr << 2) & 0x3fffc); +} + +static void si_dma_ring_emit_ib(struct amdgpu_ring *ring, + struct amdgpu_ib *ib, + unsigned vm_id, bool ctx_switch) +{ + /* The indirect buffer packet must end on an 8 DW boundary in the DMA ring. + * Pad as necessary with NOPs. + */ + while ((ring->wptr & 7) != 5) + amdgpu_ring_write(ring, DMA_PACKET(DMA_PACKET_NOP, 0, 0, 0, 0)); + amdgpu_ring_write(ring, DMA_IB_PACKET(DMA_PACKET_INDIRECT_BUFFER, vm_id, 0)); + amdgpu_ring_write(ring, (ib->gpu_addr & 0xFFFFFFE0)); + amdgpu_ring_write(ring, (ib->length_dw << 12) | (upper_32_bits(ib->gpu_addr) & 0xFF)); + +} + +static void si_dma_ring_emit_hdp_flush(struct amdgpu_ring *ring) +{ + amdgpu_ring_write(ring, DMA_PACKET(DMA_PACKET_SRBM_WRITE, 0, 0, 0, 0)); + amdgpu_ring_write(ring, (0xf << 16) | (HDP_MEM_COHERENCY_FLUSH_CNTL)); + amdgpu_ring_write(ring, 1); +} + +static void si_dma_ring_emit_hdp_invalidate(struct amdgpu_ring *ring) +{ + amdgpu_ring_write(ring, DMA_PACKET(DMA_PACKET_SRBM_WRITE, 0, 0, 0, 0)); + amdgpu_ring_write(ring, (0xf << 16) | (HDP_DEBUG0)); + amdgpu_ring_write(ring, 1); +} + +/** + * si_dma_ring_emit_fence - emit a fence on the DMA ring + * + * @ring: amdgpu ring pointer + * @fence: amdgpu fence object + * + * Add a DMA fence packet to the ring to write + * the fence seq number and DMA trap packet to generate + * an interrupt if needed (VI). + */ +static void si_dma_ring_emit_fence(struct amdgpu_ring *ring, u64 addr, u64 seq, + unsigned flags) +{ + + bool write64bit = flags & AMDGPU_FENCE_FLAG_64BIT; + /* write the fence */ + amdgpu_ring_write(ring, DMA_PACKET(DMA_PACKET_FENCE, 0, 0, 0, 0)); + amdgpu_ring_write(ring, addr & 0xfffffffc); + amdgpu_ring_write(ring, (upper_32_bits(addr) & 0xff)); + amdgpu_ring_write(ring, seq); + /* optionally write high bits as well */ + if (write64bit) { + addr += 4; + amdgpu_ring_write(ring, DMA_PACKET(DMA_PACKET_FENCE, 0, 0, 0, 0)); + amdgpu_ring_write(ring, addr & 0xfffffffc); + amdgpu_ring_write(ring, (upper_32_bits(addr) & 0xff)); + amdgpu_ring_write(ring, upper_32_bits(seq)); + } + /* generate an interrupt */ + amdgpu_ring_write(ring, DMA_PACKET(DMA_PACKET_TRAP, 0, 0, 0, 0)); +} + +static void si_dma_stop(struct amdgpu_device *adev) +{ + struct amdgpu_ring *ring; + u32 rb_cntl; + unsigned i; + + for (i = 0; i < adev->sdma.num_instances; i++) { + ring = &adev->sdma.instance[i].ring; + /* dma0 */ + rb_cntl = RREG32(DMA_RB_CNTL + sdma_offsets[i]); + rb_cntl &= ~DMA_RB_ENABLE; + WREG32(DMA_RB_CNTL + sdma_offsets[i], rb_cntl); + + if (adev->mman.buffer_funcs_ring == ring) + amdgpu_ttm_set_active_vram_size(adev, adev->mc.visible_vram_size); + ring->ready = false; + } +} + +static int si_dma_start(struct amdgpu_device *adev) +{ + struct amdgpu_ring *ring; + u32 rb_cntl, dma_cntl, ib_cntl, rb_bufsz; + int i, r; + uint64_t rptr_addr; + + for (i = 0; i < adev->sdma.num_instances; i++) { + ring = &adev->sdma.instance[i].ring; + + WREG32(DMA_SEM_INCOMPLETE_TIMER_CNTL + sdma_offsets[i], 0); + WREG32(DMA_SEM_WAIT_FAIL_TIMER_CNTL + sdma_offsets[i], 0); + + /* Set ring buffer size in dwords */ + rb_bufsz = order_base_2(ring->ring_size / 4); + rb_cntl = rb_bufsz << 1; +#ifdef __BIG_ENDIAN + rb_cntl |= DMA_RB_SWAP_ENABLE | DMA_RPTR_WRITEBACK_SWAP_ENABLE; +#endif + WREG32(DMA_RB_CNTL + sdma_offsets[i], rb_cntl); + + /* Initialize the ring buffer's read and write pointers */ + WREG32(DMA_RB_RPTR + sdma_offsets[i], 0); + WREG32(DMA_RB_WPTR + sdma_offsets[i], 0); + + rptr_addr = adev->wb.gpu_addr + (ring->rptr_offs * 4); + + WREG32(DMA_RB_RPTR_ADDR_LO + sdma_offsets[i], lower_32_bits(rptr_addr)); + WREG32(DMA_RB_RPTR_ADDR_HI + sdma_offsets[i], upper_32_bits(rptr_addr) & 0xFF); + + rb_cntl |= DMA_RPTR_WRITEBACK_ENABLE; + + WREG32(DMA_RB_BASE + sdma_offsets[i], ring->gpu_addr >> 8); + + /* enable DMA IBs */ + ib_cntl = DMA_IB_ENABLE | CMD_VMID_FORCE; +#ifdef __BIG_ENDIAN + ib_cntl |= DMA_IB_SWAP_ENABLE; +#endif + WREG32(DMA_IB_CNTL + sdma_offsets[i], ib_cntl); + + dma_cntl = RREG32(DMA_CNTL + sdma_offsets[i]); + dma_cntl &= ~CTXEMPTY_INT_ENABLE; + WREG32(DMA_CNTL + sdma_offsets[i], dma_cntl); + + ring->wptr = 0; + WREG32(DMA_RB_WPTR + sdma_offsets[i], ring->wptr << 2); + WREG32(DMA_RB_CNTL + sdma_offsets[i], rb_cntl | DMA_RB_ENABLE); + + ring->ready = true; + + r = amdgpu_ring_test_ring(ring); + if (r) { + ring->ready = false; + return r; + } + + if (adev->mman.buffer_funcs_ring == ring) + amdgpu_ttm_set_active_vram_size(adev, adev->mc.real_vram_size); + } + + return 0; +} + +/** + * si_dma_ring_test_ring - simple async dma engine test + * + * @ring: amdgpu_ring structure holding ring information + * + * Test the DMA engine by writing using it to write an + * value to memory. (VI). + * Returns 0 for success, error for failure. + */ +static int si_dma_ring_test_ring(struct amdgpu_ring *ring) +{ + struct amdgpu_device *adev = ring->adev; + unsigned i; + unsigned index; + int r; + u32 tmp; + u64 gpu_addr; + + r = amdgpu_wb_get(adev, &index); + if (r) { + dev_err(adev->dev, "(%d) failed to allocate wb slot\n", r); + return r; + } + + gpu_addr = adev->wb.gpu_addr + (index * 4); + tmp = 0xCAFEDEAD; + adev->wb.wb[index] = cpu_to_le32(tmp); + + r = amdgpu_ring_alloc(ring, 4); + if (r) { + DRM_ERROR("amdgpu: dma failed to lock ring %d (%d).\n", ring->idx, r); + amdgpu_wb_free(adev, index); + return r; + } + + amdgpu_ring_write(ring, DMA_PACKET(DMA_PACKET_WRITE, 0, 0, 0, 1)); + amdgpu_ring_write(ring, lower_32_bits(gpu_addr)); + amdgpu_ring_write(ring, upper_32_bits(gpu_addr) & 0xff); + amdgpu_ring_write(ring, 0xDEADBEEF); + amdgpu_ring_commit(ring); + + for (i = 0; i < adev->usec_timeout; i++) { + tmp = le32_to_cpu(adev->wb.wb[index]); + if (tmp == 0xDEADBEEF) + break; + DRM_UDELAY(1); + } + + if (i < adev->usec_timeout) { + DRM_INFO("ring test on %d succeeded in %d usecs\n", ring->idx, i); + } else { + DRM_ERROR("amdgpu: ring %d test failed (0x%08X)\n", + ring->idx, tmp); + r = -EINVAL; + } + amdgpu_wb_free(adev, index); + + return r; +} + +/** + * si_dma_ring_test_ib - test an IB on the DMA engine + * + * @ring: amdgpu_ring structure holding ring information + * + * Test a simple IB in the DMA ring (VI). + * Returns 0 on success, error on failure. + */ +static int si_dma_ring_test_ib(struct amdgpu_ring *ring, long timeout) +{ + struct amdgpu_device *adev = ring->adev; + struct amdgpu_ib ib; + struct fence *f = NULL; + unsigned index; + u32 tmp = 0; + u64 gpu_addr; + long r; + + r = amdgpu_wb_get(adev, &index); + if (r) { + dev_err(adev->dev, "(%ld) failed to allocate wb slot\n", r); + return r; + } + + gpu_addr = adev->wb.gpu_addr + (index * 4); + tmp = 0xCAFEDEAD; + adev->wb.wb[index] = cpu_to_le32(tmp); + memset(&ib, 0, sizeof(ib)); + r = amdgpu_ib_get(adev, NULL, 256, &ib); + if (r) { + DRM_ERROR("amdgpu: failed to get ib (%ld).\n", r); + goto err0; + } + + ib.ptr[0] = DMA_PACKET(DMA_PACKET_WRITE, 0, 0, 0, 1); + ib.ptr[1] = lower_32_bits(gpu_addr); + ib.ptr[2] = upper_32_bits(gpu_addr) & 0xff; + ib.ptr[3] = 0xDEADBEEF; + ib.length_dw = 4; + r = amdgpu_ib_schedule(ring, 1, &ib, NULL, NULL, &f); + if (r) + goto err1; + + r = fence_wait_timeout(f, false, timeout); + if (r == 0) { + DRM_ERROR("amdgpu: IB test timed out\n"); + r = -ETIMEDOUT; + goto err1; + } else if (r < 0) { + DRM_ERROR("amdgpu: fence wait failed (%ld).\n", r); + goto err1; + } + tmp = le32_to_cpu(adev->wb.wb[index]); + if (tmp == 0xDEADBEEF) { + DRM_INFO("ib test on ring %d succeeded\n", ring->idx); + r = 0; + } else { + DRM_ERROR("amdgpu: ib test failed (0x%08X)\n", tmp); + r = -EINVAL; + } + +err1: + amdgpu_ib_free(adev, &ib, NULL); + fence_put(f); +err0: + amdgpu_wb_free(adev, index); + return r; +} + +/** + * cik_dma_vm_copy_pte - update PTEs by copying them from the GART + * + * @ib: indirect buffer to fill with commands + * @pe: addr of the page entry + * @src: src addr to copy from + * @count: number of page entries to update + * + * Update PTEs by copying them from the GART using DMA (SI). + */ +static void si_dma_vm_copy_pte(struct amdgpu_ib *ib, + uint64_t pe, uint64_t src, + unsigned count) +{ + unsigned bytes = count * 8; + + ib->ptr[ib->length_dw++] = DMA_PACKET(DMA_PACKET_COPY, + 1, 0, 0, bytes); + ib->ptr[ib->length_dw++] = lower_32_bits(pe); + ib->ptr[ib->length_dw++] = lower_32_bits(src); + ib->ptr[ib->length_dw++] = upper_32_bits(pe) & 0xff; + ib->ptr[ib->length_dw++] = upper_32_bits(src) & 0xff; +} + +/** + * si_dma_vm_write_pte - update PTEs by writing them manually + * + * @ib: indirect buffer to fill with commands + * @pe: addr of the page entry + * @value: dst addr to write into pe + * @count: number of page entries to update + * @incr: increase next addr by incr bytes + * + * Update PTEs by writing them manually using DMA (SI). + */ +static void si_dma_vm_write_pte(struct amdgpu_ib *ib, uint64_t pe, + uint64_t value, unsigned count, + uint32_t incr) +{ + unsigned ndw = count * 2; + + ib->ptr[ib->length_dw++] = DMA_PACKET(DMA_PACKET_WRITE, 0, 0, 0, ndw); + ib->ptr[ib->length_dw++] = lower_32_bits(pe); + ib->ptr[ib->length_dw++] = upper_32_bits(pe); + for (; ndw > 0; ndw -= 2) { + ib->ptr[ib->length_dw++] = lower_32_bits(value); + ib->ptr[ib->length_dw++] = upper_32_bits(value); + value += incr; + } +} + +/** + * si_dma_vm_set_pte_pde - update the page tables using sDMA + * + * @ib: indirect buffer to fill with commands + * @pe: addr of the page entry + * @addr: dst addr to write into pe + * @count: number of page entries to update + * @incr: increase next addr by incr bytes + * @flags: access flags + * + * Update the page tables using sDMA (CIK). + */ +static void si_dma_vm_set_pte_pde(struct amdgpu_ib *ib, + uint64_t pe, + uint64_t addr, unsigned count, + uint32_t incr, uint32_t flags) +{ + uint64_t value; + unsigned ndw; + + while (count) { + ndw = count * 2; + if (ndw > 0xFFFFE) + ndw = 0xFFFFE; + + if (flags & AMDGPU_PTE_VALID) + value = addr; + else + value = 0; + + /* for physically contiguous pages (vram) */ + ib->ptr[ib->length_dw++] = DMA_PTE_PDE_PACKET(ndw); + ib->ptr[ib->length_dw++] = pe; /* dst addr */ + ib->ptr[ib->length_dw++] = upper_32_bits(pe) & 0xff; + ib->ptr[ib->length_dw++] = flags; /* mask */ + ib->ptr[ib->length_dw++] = 0; + ib->ptr[ib->length_dw++] = value; /* value */ + ib->ptr[ib->length_dw++] = upper_32_bits(value); + ib->ptr[ib->length_dw++] = incr; /* increment size */ + ib->ptr[ib->length_dw++] = 0; + pe += ndw * 4; + addr += (ndw / 2) * incr; + count -= ndw / 2; + } +} + +/** + * si_dma_pad_ib - pad the IB to the required number of dw + * + * @ib: indirect buffer to fill with padding + * + */ +static void si_dma_ring_pad_ib(struct amdgpu_ring *ring, struct amdgpu_ib *ib) +{ + while (ib->length_dw & 0x7) + ib->ptr[ib->length_dw++] = DMA_PACKET(DMA_PACKET_NOP, 0, 0, 0, 0); +} + +/** + * cik_sdma_ring_emit_pipeline_sync - sync the pipeline + * + * @ring: amdgpu_ring pointer + * + * Make sure all previous operations are completed (CIK). + */ +static void si_dma_ring_emit_pipeline_sync(struct amdgpu_ring *ring) +{ + uint32_t seq = ring->fence_drv.sync_seq; + uint64_t addr = ring->fence_drv.gpu_addr; + + /* wait for idle */ + amdgpu_ring_write(ring, DMA_PACKET(DMA_PACKET_POLL_REG_MEM, 0, 0, 0, 0) | + (1 << 27)); /* Poll memory */ + amdgpu_ring_write(ring, lower_32_bits(addr)); + amdgpu_ring_write(ring, (0xff << 16) | upper_32_bits(addr)); /* retry, addr_hi */ + amdgpu_ring_write(ring, 0xffffffff); /* mask */ + amdgpu_ring_write(ring, seq); /* value */ + amdgpu_ring_write(ring, (3 << 28) | 0x20); /* func(equal) | poll interval */ +} + +/** + * si_dma_ring_emit_vm_flush - cik vm flush using sDMA + * + * @ring: amdgpu_ring pointer + * @vm: amdgpu_vm pointer + * + * Update the page table base and flush the VM TLB + * using sDMA (VI). + */ +static void si_dma_ring_emit_vm_flush(struct amdgpu_ring *ring, + unsigned vm_id, uint64_t pd_addr) +{ + amdgpu_ring_write(ring, DMA_PACKET(DMA_PACKET_SRBM_WRITE, 0, 0, 0, 0)); + if (vm_id < 8) + amdgpu_ring_write(ring, (0xf << 16) | (VM_CONTEXT0_PAGE_TABLE_BASE_ADDR + vm_id)); + else + amdgpu_ring_write(ring, (0xf << 16) | (VM_CONTEXT8_PAGE_TABLE_BASE_ADDR + (vm_id - 8))); + amdgpu_ring_write(ring, pd_addr >> 12); + + /* bits 0-7 are the VM contexts0-7 */ + amdgpu_ring_write(ring, DMA_PACKET(DMA_PACKET_SRBM_WRITE, 0, 0, 0, 0)); + amdgpu_ring_write(ring, (0xf << 16) | (VM_INVALIDATE_REQUEST)); + amdgpu_ring_write(ring, 1 << vm_id); + + /* wait for invalidate to complete */ + amdgpu_ring_write(ring, DMA_PACKET(DMA_PACKET_POLL_REG_MEM, 0, 0, 0, 0)); + amdgpu_ring_write(ring, VM_INVALIDATE_REQUEST); + amdgpu_ring_write(ring, 0xff << 16); /* retry */ + amdgpu_ring_write(ring, 1 << vm_id); /* mask */ + amdgpu_ring_write(ring, 0); /* value */ + amdgpu_ring_write(ring, (0 << 28) | 0x20); /* func(always) | poll interval */ +} + +static unsigned si_dma_ring_get_emit_ib_size(struct amdgpu_ring *ring) +{ + return + 7 + 3; /* si_dma_ring_emit_ib */ +} + +static unsigned si_dma_ring_get_dma_frame_size(struct amdgpu_ring *ring) +{ + return + 3 + /* si_dma_ring_emit_hdp_flush */ + 3 + /* si_dma_ring_emit_hdp_invalidate */ + 6 + /* si_dma_ring_emit_pipeline_sync */ + 12 + /* si_dma_ring_emit_vm_flush */ + 9 + 9 + 9; /* si_dma_ring_emit_fence x3 for user fence, vm fence */ +} + +static int si_dma_early_init(void *handle) +{ + struct amdgpu_device *adev = (struct amdgpu_device *)handle; + + adev->sdma.num_instances = 2; + + si_dma_set_ring_funcs(adev); + si_dma_set_buffer_funcs(adev); + si_dma_set_vm_pte_funcs(adev); + si_dma_set_irq_funcs(adev); + + return 0; +} + +static int si_dma_sw_init(void *handle) +{ + struct amdgpu_ring *ring; + int r, i; + struct amdgpu_device *adev = (struct amdgpu_device *)handle; + + /* DMA0 trap event */ + r = amdgpu_irq_add_id(adev, 224, &adev->sdma.trap_irq); + if (r) + return r; + + /* DMA1 trap event */ + r = amdgpu_irq_add_id(adev, 244, &adev->sdma.trap_irq_1); + if (r) + return r; + + for (i = 0; i < adev->sdma.num_instances; i++) { + ring = &adev->sdma.instance[i].ring; + ring->ring_obj = NULL; + ring->use_doorbell = false; + sprintf(ring->name, "sdma%d", i); + r = amdgpu_ring_init(adev, ring, 1024, + DMA_PACKET(DMA_PACKET_NOP, 0, 0, 0, 0), 0xf, + &adev->sdma.trap_irq, + (i == 0) ? + AMDGPU_SDMA_IRQ_TRAP0 : AMDGPU_SDMA_IRQ_TRAP1, + AMDGPU_RING_TYPE_SDMA); + if (r) + return r; + } + + return r; +} + +static int si_dma_sw_fini(void *handle) +{ + struct amdgpu_device *adev = (struct amdgpu_device *)handle; + int i; + + for (i = 0; i < adev->sdma.num_instances; i++) + amdgpu_ring_fini(&adev->sdma.instance[i].ring); + + return 0; +} + +static int si_dma_hw_init(void *handle) +{ + struct amdgpu_device *adev = (struct amdgpu_device *)handle; + + return si_dma_start(adev); +} + +static int si_dma_hw_fini(void *handle) +{ + struct amdgpu_device *adev = (struct amdgpu_device *)handle; + + si_dma_stop(adev); + + return 0; +} + +static int si_dma_suspend(void *handle) +{ + struct amdgpu_device *adev = (struct amdgpu_device *)handle; + + return si_dma_hw_fini(adev); +} + +static int si_dma_resume(void *handle) +{ + struct amdgpu_device *adev = (struct amdgpu_device *)handle; + + return si_dma_hw_init(adev); +} + +static bool si_dma_is_idle(void *handle) +{ + struct amdgpu_device *adev = (struct amdgpu_device *)handle; + u32 tmp = RREG32(SRBM_STATUS2); + + if (tmp & (DMA_BUSY_MASK | DMA1_BUSY_MASK)) + return false; + + return true; +} + +static int si_dma_wait_for_idle(void *handle) +{ + unsigned i; + struct amdgpu_device *adev = (struct amdgpu_device *)handle; + + for (i = 0; i < adev->usec_timeout; i++) { + if (si_dma_is_idle(handle)) + return 0; + udelay(1); + } + return -ETIMEDOUT; +} + +static int si_dma_soft_reset(void *handle) +{ + DRM_INFO("si_dma_soft_reset --- not implemented !!!!!!!\n"); + return 0; +} + +static int si_dma_set_trap_irq_state(struct amdgpu_device *adev, + struct amdgpu_irq_src *src, + unsigned type, + enum amdgpu_interrupt_state state) +{ + u32 sdma_cntl; + + switch (type) { + case AMDGPU_SDMA_IRQ_TRAP0: + switch (state) { + case AMDGPU_IRQ_STATE_DISABLE: + sdma_cntl = RREG32(DMA_CNTL + DMA0_REGISTER_OFFSET); + sdma_cntl &= ~TRAP_ENABLE; + WREG32(DMA_CNTL + DMA0_REGISTER_OFFSET, sdma_cntl); + break; + case AMDGPU_IRQ_STATE_ENABLE: + sdma_cntl = RREG32(DMA_CNTL + DMA0_REGISTER_OFFSET); + sdma_cntl |= TRAP_ENABLE; + WREG32(DMA_CNTL + DMA0_REGISTER_OFFSET, sdma_cntl); + break; + default: + break; + } + break; + case AMDGPU_SDMA_IRQ_TRAP1: + switch (state) { + case AMDGPU_IRQ_STATE_DISABLE: + sdma_cntl = RREG32(DMA_CNTL + DMA1_REGISTER_OFFSET); + sdma_cntl &= ~TRAP_ENABLE; + WREG32(DMA_CNTL + DMA1_REGISTER_OFFSET, sdma_cntl); + break; + case AMDGPU_IRQ_STATE_ENABLE: + sdma_cntl = RREG32(DMA_CNTL + DMA1_REGISTER_OFFSET); + sdma_cntl |= TRAP_ENABLE; + WREG32(DMA_CNTL + DMA1_REGISTER_OFFSET, sdma_cntl); + break; + default: + break; + } + break; + default: + break; + } + return 0; +} + +static int si_dma_process_trap_irq(struct amdgpu_device *adev, + struct amdgpu_irq_src *source, + struct amdgpu_iv_entry *entry) +{ + amdgpu_fence_process(&adev->sdma.instance[0].ring); + + return 0; +} + +static int si_dma_process_trap_irq_1(struct amdgpu_device *adev, + struct amdgpu_irq_src *source, + struct amdgpu_iv_entry *entry) +{ + amdgpu_fence_process(&adev->sdma.instance[1].ring); + + return 0; +} + +static int si_dma_process_illegal_inst_irq(struct amdgpu_device *adev, + struct amdgpu_irq_src *source, + struct amdgpu_iv_entry *entry) +{ + DRM_ERROR("Illegal instruction in SDMA command stream\n"); + schedule_work(&adev->reset_work); + return 0; +} + +static int si_dma_set_clockgating_state(void *handle, + enum amd_clockgating_state state) +{ + u32 orig, data, offset; + int i; + bool enable; + struct amdgpu_device *adev = (struct amdgpu_device *)handle; + + enable = (state == AMD_CG_STATE_GATE) ? true : false; + + if (enable && (adev->cg_flags & AMD_CG_SUPPORT_SDMA_MGCG)) { + for (i = 0; i < adev->sdma.num_instances; i++) { + if (i == 0) + offset = DMA0_REGISTER_OFFSET; + else + offset = DMA1_REGISTER_OFFSET; + orig = data = RREG32(DMA_POWER_CNTL + offset); + data &= ~MEM_POWER_OVERRIDE; + if (data != orig) + WREG32(DMA_POWER_CNTL + offset, data); + WREG32(DMA_CLK_CTRL + offset, 0x00000100); + } + } else { + for (i = 0; i < adev->sdma.num_instances; i++) { + if (i == 0) + offset = DMA0_REGISTER_OFFSET; + else + offset = DMA1_REGISTER_OFFSET; + orig = data = RREG32(DMA_POWER_CNTL + offset); + data |= MEM_POWER_OVERRIDE; + if (data != orig) + WREG32(DMA_POWER_CNTL + offset, data); + + orig = data = RREG32(DMA_CLK_CTRL + offset); + data = 0xff000000; + if (data != orig) + WREG32(DMA_CLK_CTRL + offset, data); + } + } + + return 0; +} + +static int si_dma_set_powergating_state(void *handle, + enum amd_powergating_state state) +{ + u32 tmp; + + struct amdgpu_device *adev = (struct amdgpu_device *)handle; + + WREG32(DMA_PGFSM_WRITE, 0x00002000); + WREG32(DMA_PGFSM_CONFIG, 0x100010ff); + + for (tmp = 0; tmp < 5; tmp++) + WREG32(DMA_PGFSM_WRITE, 0); + + return 0; +} + +const struct amd_ip_funcs si_dma_ip_funcs = { + .name = "si_dma", + .early_init = si_dma_early_init, + .late_init = NULL, + .sw_init = si_dma_sw_init, + .sw_fini = si_dma_sw_fini, + .hw_init = si_dma_hw_init, + .hw_fini = si_dma_hw_fini, + .suspend = si_dma_suspend, + .resume = si_dma_resume, + .is_idle = si_dma_is_idle, + .wait_for_idle = si_dma_wait_for_idle, + .soft_reset = si_dma_soft_reset, + .set_clockgating_state = si_dma_set_clockgating_state, + .set_powergating_state = si_dma_set_powergating_state, +}; + +static const struct amdgpu_ring_funcs si_dma_ring_funcs = { + .get_rptr = si_dma_ring_get_rptr, + .get_wptr = si_dma_ring_get_wptr, + .set_wptr = si_dma_ring_set_wptr, + .parse_cs = NULL, + .emit_ib = si_dma_ring_emit_ib, + .emit_fence = si_dma_ring_emit_fence, + .emit_pipeline_sync = si_dma_ring_emit_pipeline_sync, + .emit_vm_flush = si_dma_ring_emit_vm_flush, + .emit_hdp_flush = si_dma_ring_emit_hdp_flush, + .emit_hdp_invalidate = si_dma_ring_emit_hdp_invalidate, + .test_ring = si_dma_ring_test_ring, + .test_ib = si_dma_ring_test_ib, + .insert_nop = amdgpu_ring_insert_nop, + .pad_ib = si_dma_ring_pad_ib, + .get_emit_ib_size = si_dma_ring_get_emit_ib_size, + .get_dma_frame_size = si_dma_ring_get_dma_frame_size, +}; + +static void si_dma_set_ring_funcs(struct amdgpu_device *adev) +{ + int i; + + for (i = 0; i < adev->sdma.num_instances; i++) + adev->sdma.instance[i].ring.funcs = &si_dma_ring_funcs; +} + +static const struct amdgpu_irq_src_funcs si_dma_trap_irq_funcs = { + .set = si_dma_set_trap_irq_state, + .process = si_dma_process_trap_irq, +}; + +static const struct amdgpu_irq_src_funcs si_dma_trap_irq_funcs_1 = { + .set = si_dma_set_trap_irq_state, + .process = si_dma_process_trap_irq_1, +}; + +static const struct amdgpu_irq_src_funcs si_dma_illegal_inst_irq_funcs = { + .process = si_dma_process_illegal_inst_irq, +}; + +static void si_dma_set_irq_funcs(struct amdgpu_device *adev) +{ + adev->sdma.trap_irq.num_types = AMDGPU_SDMA_IRQ_LAST; + adev->sdma.trap_irq.funcs = &si_dma_trap_irq_funcs; + adev->sdma.trap_irq_1.funcs = &si_dma_trap_irq_funcs_1; + adev->sdma.illegal_inst_irq.funcs = &si_dma_illegal_inst_irq_funcs; +} + +/** + * si_dma_emit_copy_buffer - copy buffer using the sDMA engine + * + * @ring: amdgpu_ring structure holding ring information + * @src_offset: src GPU address + * @dst_offset: dst GPU address + * @byte_count: number of bytes to xfer + * + * Copy GPU buffers using the DMA engine (VI). + * Used by the amdgpu ttm implementation to move pages if + * registered as the asic copy callback. + */ +static void si_dma_emit_copy_buffer(struct amdgpu_ib *ib, + uint64_t src_offset, + uint64_t dst_offset, + uint32_t byte_count) +{ + ib->ptr[ib->length_dw++] = DMA_PACKET(DMA_PACKET_COPY, + 1, 0, 0, byte_count); + ib->ptr[ib->length_dw++] = lower_32_bits(dst_offset); + ib->ptr[ib->length_dw++] = lower_32_bits(src_offset); + ib->ptr[ib->length_dw++] = upper_32_bits(dst_offset) & 0xff; + ib->ptr[ib->length_dw++] = upper_32_bits(src_offset) & 0xff; +} + +/** + * si_dma_emit_fill_buffer - fill buffer using the sDMA engine + * + * @ring: amdgpu_ring structure holding ring information + * @src_data: value to write to buffer + * @dst_offset: dst GPU address + * @byte_count: number of bytes to xfer + * + * Fill GPU buffers using the DMA engine (VI). + */ +static void si_dma_emit_fill_buffer(struct amdgpu_ib *ib, + uint32_t src_data, + uint64_t dst_offset, + uint32_t byte_count) +{ + ib->ptr[ib->length_dw++] = DMA_PACKET(DMA_PACKET_CONSTANT_FILL, + 0, 0, 0, byte_count / 4); + ib->ptr[ib->length_dw++] = lower_32_bits(dst_offset); + ib->ptr[ib->length_dw++] = src_data; + ib->ptr[ib->length_dw++] = upper_32_bits(dst_offset) << 16; +} + + +static const struct amdgpu_buffer_funcs si_dma_buffer_funcs = { + .copy_max_bytes = 0xffff8, + .copy_num_dw = 5, + .emit_copy_buffer = si_dma_emit_copy_buffer, + + .fill_max_bytes = 0xffff8, + .fill_num_dw = 4, + .emit_fill_buffer = si_dma_emit_fill_buffer, +}; + +static void si_dma_set_buffer_funcs(struct amdgpu_device *adev) +{ + if (adev->mman.buffer_funcs == NULL) { + adev->mman.buffer_funcs = &si_dma_buffer_funcs; + adev->mman.buffer_funcs_ring = &adev->sdma.instance[0].ring; + } +} + +static const struct amdgpu_vm_pte_funcs si_dma_vm_pte_funcs = { + .copy_pte = si_dma_vm_copy_pte, + .write_pte = si_dma_vm_write_pte, + .set_pte_pde = si_dma_vm_set_pte_pde, +}; + +static void si_dma_set_vm_pte_funcs(struct amdgpu_device *adev) +{ + unsigned i; + + if (adev->vm_manager.vm_pte_funcs == NULL) { + adev->vm_manager.vm_pte_funcs = &si_dma_vm_pte_funcs; + for (i = 0; i < adev->sdma.num_instances; i++) + adev->vm_manager.vm_pte_rings[i] = + &adev->sdma.instance[i].ring; + + adev->vm_manager.vm_pte_num_rings = adev->sdma.num_instances; + } +} |