blob: 68403e77756d333fd8d1ce76d512dfd134f52967 [file] [log] [blame]
/*
* Copyright 2013 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 <linux/firmware.h>
#include "radeon.h"
#include "radeon_ucode.h"
#include "radeon_asic.h"
#include "radeon_trace.h"
#include "cikd.h"
/* sdma */
#define CIK_SDMA_UCODE_SIZE 1050
#define CIK_SDMA_UCODE_VERSION 64
u32 cik_gpu_check_soft_reset(struct radeon_device *rdev);
/*
* sDMA - System DMA
* Starting with CIK, the GPU has new asynchronous
* DMA engines. These engines are used for compute
* and gfx. There are two DMA engines (SDMA0, SDMA1)
* and each one supports 1 ring buffer used for gfx
* and 2 queues used for compute.
*
* The programming model is very similar to the CP
* (ring buffer, IBs, etc.), but sDMA has it's own
* packet format that is different from the PM4 format
* used by the CP. sDMA supports copying data, writing
* embedded data, solid fills, and a number of other
* things. It also has support for tiling/detiling of
* buffers.
*/
/**
* cik_sdma_get_rptr - get the current read pointer
*
* @rdev: radeon_device pointer
* @ring: radeon ring pointer
*
* Get the current rptr from the hardware (CIK+).
*/
uint32_t cik_sdma_get_rptr(struct radeon_device *rdev,
struct radeon_ring *ring)
{
u32 rptr, reg;
if (rdev->wb.enabled) {
rptr = rdev->wb.wb[ring->rptr_offs/4];
} else {
if (ring->idx == R600_RING_TYPE_DMA_INDEX)
reg = SDMA0_GFX_RB_RPTR + SDMA0_REGISTER_OFFSET;
else
reg = SDMA0_GFX_RB_RPTR + SDMA1_REGISTER_OFFSET;
rptr = RREG32(reg);
}
return (rptr & 0x3fffc) >> 2;
}
/**
* cik_sdma_get_wptr - get the current write pointer
*
* @rdev: radeon_device pointer
* @ring: radeon ring pointer
*
* Get the current wptr from the hardware (CIK+).
*/
uint32_t cik_sdma_get_wptr(struct radeon_device *rdev,
struct radeon_ring *ring)
{
u32 reg;
if (ring->idx == R600_RING_TYPE_DMA_INDEX)
reg = SDMA0_GFX_RB_WPTR + SDMA0_REGISTER_OFFSET;
else
reg = SDMA0_GFX_RB_WPTR + SDMA1_REGISTER_OFFSET;
return (RREG32(reg) & 0x3fffc) >> 2;
}
/**
* cik_sdma_set_wptr - commit the write pointer
*
* @rdev: radeon_device pointer
* @ring: radeon ring pointer
*
* Write the wptr back to the hardware (CIK+).
*/
void cik_sdma_set_wptr(struct radeon_device *rdev,
struct radeon_ring *ring)
{
u32 reg;
if (ring->idx == R600_RING_TYPE_DMA_INDEX)
reg = SDMA0_GFX_RB_WPTR + SDMA0_REGISTER_OFFSET;
else
reg = SDMA0_GFX_RB_WPTR + SDMA1_REGISTER_OFFSET;
WREG32(reg, (ring->wptr << 2) & 0x3fffc);
(void)RREG32(reg);
}
/**
* cik_sdma_ring_ib_execute - Schedule an IB on the DMA engine
*
* @rdev: radeon_device pointer
* @ib: IB object to schedule
*
* Schedule an IB in the DMA ring (CIK).
*/
void cik_sdma_ring_ib_execute(struct radeon_device *rdev,
struct radeon_ib *ib)
{
struct radeon_ring *ring = &rdev->ring[ib->ring];
u32 extra_bits = (ib->vm ? ib->vm->ids[ib->ring].id : 0) & 0xf;
if (rdev->wb.enabled) {
u32 next_rptr = ring->wptr + 5;
while ((next_rptr & 7) != 4)
next_rptr++;
next_rptr += 4;
radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_WRITE, SDMA_WRITE_SUB_OPCODE_LINEAR, 0));
radeon_ring_write(ring, ring->next_rptr_gpu_addr & 0xfffffffc);
radeon_ring_write(ring, upper_32_bits(ring->next_rptr_gpu_addr));
radeon_ring_write(ring, 1); /* number of DWs to follow */
radeon_ring_write(ring, next_rptr);
}
/* IB packet must end on a 8 DW boundary */
while ((ring->wptr & 7) != 4)
radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_NOP, 0, 0));
radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_INDIRECT_BUFFER, 0, extra_bits));
radeon_ring_write(ring, ib->gpu_addr & 0xffffffe0); /* base must be 32 byte aligned */
radeon_ring_write(ring, upper_32_bits(ib->gpu_addr));
radeon_ring_write(ring, ib->length_dw);
}
/**
* cik_sdma_hdp_flush_ring_emit - emit an hdp flush on the DMA ring
*
* @rdev: radeon_device pointer
* @ridx: radeon ring index
*
* Emit an hdp flush packet on the requested DMA ring.
*/
static void cik_sdma_hdp_flush_ring_emit(struct radeon_device *rdev,
int ridx)
{
struct radeon_ring *ring = &rdev->ring[ridx];
u32 extra_bits = (SDMA_POLL_REG_MEM_EXTRA_OP(1) |
SDMA_POLL_REG_MEM_EXTRA_FUNC(3)); /* == */
u32 ref_and_mask;
if (ridx == R600_RING_TYPE_DMA_INDEX)
ref_and_mask = SDMA0;
else
ref_and_mask = SDMA1;
radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_POLL_REG_MEM, 0, extra_bits));
radeon_ring_write(ring, GPU_HDP_FLUSH_DONE);
radeon_ring_write(ring, GPU_HDP_FLUSH_REQ);
radeon_ring_write(ring, ref_and_mask); /* reference */
radeon_ring_write(ring, ref_and_mask); /* mask */
radeon_ring_write(ring, (0xfff << 16) | 10); /* retry count, poll interval */
}
/**
* cik_sdma_fence_ring_emit - emit a fence on the DMA ring
*
* @rdev: radeon_device pointer
* @fence: radeon 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 (CIK).
*/
void cik_sdma_fence_ring_emit(struct radeon_device *rdev,
struct radeon_fence *fence)
{
struct radeon_ring *ring = &rdev->ring[fence->ring];
u64 addr = rdev->fence_drv[fence->ring].gpu_addr;
/* write the fence */
radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_FENCE, 0, 0));
radeon_ring_write(ring, lower_32_bits(addr));
radeon_ring_write(ring, upper_32_bits(addr));
radeon_ring_write(ring, fence->seq);
/* generate an interrupt */
radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_TRAP, 0, 0));
/* flush HDP */
cik_sdma_hdp_flush_ring_emit(rdev, fence->ring);
}
/**
* cik_sdma_semaphore_ring_emit - emit a semaphore on the dma ring
*
* @rdev: radeon_device pointer
* @ring: radeon_ring structure holding ring information
* @semaphore: radeon semaphore object
* @emit_wait: wait or signal semaphore
*
* Add a DMA semaphore packet to the ring wait on or signal
* other rings (CIK).
*/
bool cik_sdma_semaphore_ring_emit(struct radeon_device *rdev,
struct radeon_ring *ring,
struct radeon_semaphore *semaphore,
bool emit_wait)
{
u64 addr = semaphore->gpu_addr;
u32 extra_bits = emit_wait ? 0 : SDMA_SEMAPHORE_EXTRA_S;
radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_SEMAPHORE, 0, extra_bits));
radeon_ring_write(ring, addr & 0xfffffff8);
radeon_ring_write(ring, upper_32_bits(addr));
return true;
}
/**
* cik_sdma_gfx_stop - stop the gfx async dma engines
*
* @rdev: radeon_device pointer
*
* Stop the gfx async dma ring buffers (CIK).
*/
static void cik_sdma_gfx_stop(struct radeon_device *rdev)
{
u32 rb_cntl, reg_offset;
int i;
if ((rdev->asic->copy.copy_ring_index == R600_RING_TYPE_DMA_INDEX) ||
(rdev->asic->copy.copy_ring_index == CAYMAN_RING_TYPE_DMA1_INDEX))
radeon_ttm_set_active_vram_size(rdev, rdev->mc.visible_vram_size);
for (i = 0; i < 2; i++) {
if (i == 0)
reg_offset = SDMA0_REGISTER_OFFSET;
else
reg_offset = SDMA1_REGISTER_OFFSET;
rb_cntl = RREG32(SDMA0_GFX_RB_CNTL + reg_offset);
rb_cntl &= ~SDMA_RB_ENABLE;
WREG32(SDMA0_GFX_RB_CNTL + reg_offset, rb_cntl);
WREG32(SDMA0_GFX_IB_CNTL + reg_offset, 0);
}
rdev->ring[R600_RING_TYPE_DMA_INDEX].ready = false;
rdev->ring[CAYMAN_RING_TYPE_DMA1_INDEX].ready = false;
/* FIXME use something else than big hammer but after few days can not
* seem to find good combination so reset SDMA blocks as it seems we
* do not shut them down properly. This fix hibernation and does not
* affect suspend to ram.
*/
WREG32(SRBM_SOFT_RESET, SOFT_RESET_SDMA | SOFT_RESET_SDMA1);
(void)RREG32(SRBM_SOFT_RESET);
udelay(50);
WREG32(SRBM_SOFT_RESET, 0);
(void)RREG32(SRBM_SOFT_RESET);
}
/**
* cik_sdma_rlc_stop - stop the compute async dma engines
*
* @rdev: radeon_device pointer
*
* Stop the compute async dma queues (CIK).
*/
static void cik_sdma_rlc_stop(struct radeon_device *rdev)
{
/* XXX todo */
}
/**
* cik_sdma_ctx_switch_enable - enable/disable sdma engine preemption
*
* @rdev: radeon_device pointer
* @enable: enable/disable preemption.
*
* Halt or unhalt the async dma engines (CIK).
*/
static void cik_sdma_ctx_switch_enable(struct radeon_device *rdev, bool enable)
{
uint32_t reg_offset, value;
int i;
for (i = 0; i < 2; i++) {
if (i == 0)
reg_offset = SDMA0_REGISTER_OFFSET;
else
reg_offset = SDMA1_REGISTER_OFFSET;
value = RREG32(SDMA0_CNTL + reg_offset);
if (enable)
value |= AUTO_CTXSW_ENABLE;
else
value &= ~AUTO_CTXSW_ENABLE;
WREG32(SDMA0_CNTL + reg_offset, value);
}
}
/**
* cik_sdma_enable - stop the async dma engines
*
* @rdev: radeon_device pointer
* @enable: enable/disable the DMA MEs.
*
* Halt or unhalt the async dma engines (CIK).
*/
void cik_sdma_enable(struct radeon_device *rdev, bool enable)
{
u32 me_cntl, reg_offset;
int i;
if (!enable) {
cik_sdma_gfx_stop(rdev);
cik_sdma_rlc_stop(rdev);
}
for (i = 0; i < 2; i++) {
if (i == 0)
reg_offset = SDMA0_REGISTER_OFFSET;
else
reg_offset = SDMA1_REGISTER_OFFSET;
me_cntl = RREG32(SDMA0_ME_CNTL + reg_offset);
if (enable)
me_cntl &= ~SDMA_HALT;
else
me_cntl |= SDMA_HALT;
WREG32(SDMA0_ME_CNTL + reg_offset, me_cntl);
}
cik_sdma_ctx_switch_enable(rdev, enable);
}
/**
* cik_sdma_gfx_resume - setup and start the async dma engines
*
* @rdev: radeon_device pointer
*
* Set up the gfx DMA ring buffers and enable them (CIK).
* Returns 0 for success, error for failure.
*/
static int cik_sdma_gfx_resume(struct radeon_device *rdev)
{
struct radeon_ring *ring;
u32 rb_cntl, ib_cntl;
u32 rb_bufsz;
u32 reg_offset, wb_offset;
int i, r;
for (i = 0; i < 2; i++) {
if (i == 0) {
ring = &rdev->ring[R600_RING_TYPE_DMA_INDEX];
reg_offset = SDMA0_REGISTER_OFFSET;
wb_offset = R600_WB_DMA_RPTR_OFFSET;
} else {
ring = &rdev->ring[CAYMAN_RING_TYPE_DMA1_INDEX];
reg_offset = SDMA1_REGISTER_OFFSET;
wb_offset = CAYMAN_WB_DMA1_RPTR_OFFSET;
}
WREG32(SDMA0_SEM_INCOMPLETE_TIMER_CNTL + reg_offset, 0);
WREG32(SDMA0_SEM_WAIT_FAIL_TIMER_CNTL + reg_offset, 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 |= SDMA_RB_SWAP_ENABLE | SDMA_RPTR_WRITEBACK_SWAP_ENABLE;
#endif
WREG32(SDMA0_GFX_RB_CNTL + reg_offset, rb_cntl);
/* Initialize the ring buffer's read and write pointers */
WREG32(SDMA0_GFX_RB_RPTR + reg_offset, 0);
WREG32(SDMA0_GFX_RB_WPTR + reg_offset, 0);
/* set the wb address whether it's enabled or not */
WREG32(SDMA0_GFX_RB_RPTR_ADDR_HI + reg_offset,
upper_32_bits(rdev->wb.gpu_addr + wb_offset) & 0xFFFFFFFF);
WREG32(SDMA0_GFX_RB_RPTR_ADDR_LO + reg_offset,
((rdev->wb.gpu_addr + wb_offset) & 0xFFFFFFFC));
if (rdev->wb.enabled)
rb_cntl |= SDMA_RPTR_WRITEBACK_ENABLE;
WREG32(SDMA0_GFX_RB_BASE + reg_offset, ring->gpu_addr >> 8);
WREG32(SDMA0_GFX_RB_BASE_HI + reg_offset, ring->gpu_addr >> 40);
ring->wptr = 0;
WREG32(SDMA0_GFX_RB_WPTR + reg_offset, ring->wptr << 2);
/* enable DMA RB */
WREG32(SDMA0_GFX_RB_CNTL + reg_offset, rb_cntl | SDMA_RB_ENABLE);
ib_cntl = SDMA_IB_ENABLE;
#ifdef __BIG_ENDIAN
ib_cntl |= SDMA_IB_SWAP_ENABLE;
#endif
/* enable DMA IBs */
WREG32(SDMA0_GFX_IB_CNTL + reg_offset, ib_cntl);
ring->ready = true;
r = radeon_ring_test(rdev, ring->idx, ring);
if (r) {
ring->ready = false;
return r;
}
}
if ((rdev->asic->copy.copy_ring_index == R600_RING_TYPE_DMA_INDEX) ||
(rdev->asic->copy.copy_ring_index == CAYMAN_RING_TYPE_DMA1_INDEX))
radeon_ttm_set_active_vram_size(rdev, rdev->mc.real_vram_size);
return 0;
}
/**
* cik_sdma_rlc_resume - setup and start the async dma engines
*
* @rdev: radeon_device pointer
*
* Set up the compute DMA queues and enable them (CIK).
* Returns 0 for success, error for failure.
*/
static int cik_sdma_rlc_resume(struct radeon_device *rdev)
{
/* XXX todo */
return 0;
}
/**
* cik_sdma_load_microcode - load the sDMA ME ucode
*
* @rdev: radeon_device pointer
*
* Loads the sDMA0/1 ucode.
* Returns 0 for success, -EINVAL if the ucode is not available.
*/
static int cik_sdma_load_microcode(struct radeon_device *rdev)
{
int i;
if (!rdev->sdma_fw)
return -EINVAL;
/* halt the MEs */
cik_sdma_enable(rdev, false);
if (rdev->new_fw) {
const struct sdma_firmware_header_v1_0 *hdr =
(const struct sdma_firmware_header_v1_0 *)rdev->sdma_fw->data;
const __le32 *fw_data;
u32 fw_size;
radeon_ucode_print_sdma_hdr(&hdr->header);
/* sdma0 */
fw_data = (const __le32 *)
(rdev->sdma_fw->data + le32_to_cpu(hdr->header.ucode_array_offset_bytes));
fw_size = le32_to_cpu(hdr->header.ucode_size_bytes) / 4;
WREG32(SDMA0_UCODE_ADDR + SDMA0_REGISTER_OFFSET, 0);
for (i = 0; i < fw_size; i++)
WREG32(SDMA0_UCODE_DATA + SDMA0_REGISTER_OFFSET, le32_to_cpup(fw_data++));
WREG32(SDMA0_UCODE_DATA + SDMA0_REGISTER_OFFSET, CIK_SDMA_UCODE_VERSION);
/* sdma1 */
fw_data = (const __le32 *)
(rdev->sdma_fw->data + le32_to_cpu(hdr->header.ucode_array_offset_bytes));
fw_size = le32_to_cpu(hdr->header.ucode_size_bytes) / 4;
WREG32(SDMA0_UCODE_ADDR + SDMA1_REGISTER_OFFSET, 0);
for (i = 0; i < fw_size; i++)
WREG32(SDMA0_UCODE_DATA + SDMA1_REGISTER_OFFSET, le32_to_cpup(fw_data++));
WREG32(SDMA0_UCODE_DATA + SDMA1_REGISTER_OFFSET, CIK_SDMA_UCODE_VERSION);
} else {
const __be32 *fw_data;
/* sdma0 */
fw_data = (const __be32 *)rdev->sdma_fw->data;
WREG32(SDMA0_UCODE_ADDR + SDMA0_REGISTER_OFFSET, 0);
for (i = 0; i < CIK_SDMA_UCODE_SIZE; i++)
WREG32(SDMA0_UCODE_DATA + SDMA0_REGISTER_OFFSET, be32_to_cpup(fw_data++));
WREG32(SDMA0_UCODE_DATA + SDMA0_REGISTER_OFFSET, CIK_SDMA_UCODE_VERSION);
/* sdma1 */
fw_data = (const __be32 *)rdev->sdma_fw->data;
WREG32(SDMA0_UCODE_ADDR + SDMA1_REGISTER_OFFSET, 0);
for (i = 0; i < CIK_SDMA_UCODE_SIZE; i++)
WREG32(SDMA0_UCODE_DATA + SDMA1_REGISTER_OFFSET, be32_to_cpup(fw_data++));
WREG32(SDMA0_UCODE_DATA + SDMA1_REGISTER_OFFSET, CIK_SDMA_UCODE_VERSION);
}
WREG32(SDMA0_UCODE_ADDR + SDMA0_REGISTER_OFFSET, 0);
WREG32(SDMA0_UCODE_ADDR + SDMA1_REGISTER_OFFSET, 0);
return 0;
}
/**
* cik_sdma_resume - setup and start the async dma engines
*
* @rdev: radeon_device pointer
*
* Set up the DMA engines and enable them (CIK).
* Returns 0 for success, error for failure.
*/
int cik_sdma_resume(struct radeon_device *rdev)
{
int r;
r = cik_sdma_load_microcode(rdev);
if (r)
return r;
/* unhalt the MEs */
cik_sdma_enable(rdev, true);
/* start the gfx rings and rlc compute queues */
r = cik_sdma_gfx_resume(rdev);
if (r)
return r;
r = cik_sdma_rlc_resume(rdev);
if (r)
return r;
return 0;
}
/**
* cik_sdma_fini - tear down the async dma engines
*
* @rdev: radeon_device pointer
*
* Stop the async dma engines and free the rings (CIK).
*/
void cik_sdma_fini(struct radeon_device *rdev)
{
/* halt the MEs */
cik_sdma_enable(rdev, false);
radeon_ring_fini(rdev, &rdev->ring[R600_RING_TYPE_DMA_INDEX]);
radeon_ring_fini(rdev, &rdev->ring[CAYMAN_RING_TYPE_DMA1_INDEX]);
/* XXX - compute dma queue tear down */
}
/**
* cik_copy_dma - copy pages using the DMA engine
*
* @rdev: radeon_device pointer
* @src_offset: src GPU address
* @dst_offset: dst GPU address
* @num_gpu_pages: number of GPU pages to xfer
* @resv: reservation object to sync to
*
* Copy GPU paging using the DMA engine (CIK).
* Used by the radeon ttm implementation to move pages if
* registered as the asic copy callback.
*/
struct radeon_fence *cik_copy_dma(struct radeon_device *rdev,
uint64_t src_offset, uint64_t dst_offset,
unsigned num_gpu_pages,
struct dma_resv *resv)
{
struct radeon_fence *fence;
struct radeon_sync sync;
int ring_index = rdev->asic->copy.dma_ring_index;
struct radeon_ring *ring = &rdev->ring[ring_index];
u32 size_in_bytes, cur_size_in_bytes;
int i, num_loops;
int r = 0;
radeon_sync_create(&sync);
size_in_bytes = (num_gpu_pages << RADEON_GPU_PAGE_SHIFT);
num_loops = DIV_ROUND_UP(size_in_bytes, 0x1fffff);
r = radeon_ring_lock(rdev, ring, num_loops * 7 + 14);
if (r) {
DRM_ERROR("radeon: moving bo (%d).\n", r);
radeon_sync_free(rdev, &sync, NULL);
return ERR_PTR(r);
}
radeon_sync_resv(rdev, &sync, resv, false);
radeon_sync_rings(rdev, &sync, ring->idx);
for (i = 0; i < num_loops; i++) {
cur_size_in_bytes = size_in_bytes;
if (cur_size_in_bytes > 0x1fffff)
cur_size_in_bytes = 0x1fffff;
size_in_bytes -= cur_size_in_bytes;
radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_COPY, SDMA_COPY_SUB_OPCODE_LINEAR, 0));
radeon_ring_write(ring, cur_size_in_bytes);
radeon_ring_write(ring, 0); /* src/dst endian swap */
radeon_ring_write(ring, lower_32_bits(src_offset));
radeon_ring_write(ring, upper_32_bits(src_offset));
radeon_ring_write(ring, lower_32_bits(dst_offset));
radeon_ring_write(ring, upper_32_bits(dst_offset));
src_offset += cur_size_in_bytes;
dst_offset += cur_size_in_bytes;
}
r = radeon_fence_emit(rdev, &fence, ring->idx);
if (r) {
radeon_ring_unlock_undo(rdev, ring);
radeon_sync_free(rdev, &sync, NULL);
return ERR_PTR(r);
}
radeon_ring_unlock_commit(rdev, ring, false);
radeon_sync_free(rdev, &sync, fence);
return fence;
}
/**
* cik_sdma_ring_test - simple async dma engine test
*
* @rdev: radeon_device pointer
* @ring: radeon_ring structure holding ring information
*
* Test the DMA engine by writing using it to write an
* value to memory. (CIK).
* Returns 0 for success, error for failure.
*/
int cik_sdma_ring_test(struct radeon_device *rdev,
struct radeon_ring *ring)
{
unsigned i;
int r;
unsigned index;
u32 tmp;
u64 gpu_addr;
if (ring->idx == R600_RING_TYPE_DMA_INDEX)
index = R600_WB_DMA_RING_TEST_OFFSET;
else
index = CAYMAN_WB_DMA1_RING_TEST_OFFSET;
gpu_addr = rdev->wb.gpu_addr + index;
tmp = 0xCAFEDEAD;
rdev->wb.wb[index/4] = cpu_to_le32(tmp);
r = radeon_ring_lock(rdev, ring, 5);
if (r) {
DRM_ERROR("radeon: dma failed to lock ring %d (%d).\n", ring->idx, r);
return r;
}
radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_WRITE, SDMA_WRITE_SUB_OPCODE_LINEAR, 0));
radeon_ring_write(ring, lower_32_bits(gpu_addr));
radeon_ring_write(ring, upper_32_bits(gpu_addr));
radeon_ring_write(ring, 1); /* number of DWs to follow */
radeon_ring_write(ring, 0xDEADBEEF);
radeon_ring_unlock_commit(rdev, ring, false);
for (i = 0; i < rdev->usec_timeout; i++) {
tmp = le32_to_cpu(rdev->wb.wb[index/4]);
if (tmp == 0xDEADBEEF)
break;
udelay(1);
}
if (i < rdev->usec_timeout) {
DRM_INFO("ring test on %d succeeded in %d usecs\n", ring->idx, i);
} else {
DRM_ERROR("radeon: ring %d test failed (0x%08X)\n",
ring->idx, tmp);
r = -EINVAL;
}
return r;
}
/**
* cik_sdma_ib_test - test an IB on the DMA engine
*
* @rdev: radeon_device pointer
* @ring: radeon_ring structure holding ring information
*
* Test a simple IB in the DMA ring (CIK).
* Returns 0 on success, error on failure.
*/
int cik_sdma_ib_test(struct radeon_device *rdev, struct radeon_ring *ring)
{
struct radeon_ib ib;
unsigned i;
unsigned index;
int r;
u32 tmp = 0;
u64 gpu_addr;
if (ring->idx == R600_RING_TYPE_DMA_INDEX)
index = R600_WB_DMA_RING_TEST_OFFSET;
else
index = CAYMAN_WB_DMA1_RING_TEST_OFFSET;
gpu_addr = rdev->wb.gpu_addr + index;
tmp = 0xCAFEDEAD;
rdev->wb.wb[index/4] = cpu_to_le32(tmp);
r = radeon_ib_get(rdev, ring->idx, &ib, NULL, 256);
if (r) {
DRM_ERROR("radeon: failed to get ib (%d).\n", r);
return r;
}
ib.ptr[0] = SDMA_PACKET(SDMA_OPCODE_WRITE, SDMA_WRITE_SUB_OPCODE_LINEAR, 0);
ib.ptr[1] = lower_32_bits(gpu_addr);
ib.ptr[2] = upper_32_bits(gpu_addr);
ib.ptr[3] = 1;
ib.ptr[4] = 0xDEADBEEF;
ib.length_dw = 5;
r = radeon_ib_schedule(rdev, &ib, NULL, false);
if (r) {
radeon_ib_free(rdev, &ib);
DRM_ERROR("radeon: failed to schedule ib (%d).\n", r);
return r;
}
r = radeon_fence_wait_timeout(ib.fence, false, usecs_to_jiffies(
RADEON_USEC_IB_TEST_TIMEOUT));
if (r < 0) {
DRM_ERROR("radeon: fence wait failed (%d).\n", r);
return r;
} else if (r == 0) {
DRM_ERROR("radeon: fence wait timed out.\n");
return -ETIMEDOUT;
}
r = 0;
for (i = 0; i < rdev->usec_timeout; i++) {
tmp = le32_to_cpu(rdev->wb.wb[index/4]);
if (tmp == 0xDEADBEEF)
break;
udelay(1);
}
if (i < rdev->usec_timeout) {
DRM_INFO("ib test on ring %d succeeded in %u usecs\n", ib.fence->ring, i);
} else {
DRM_ERROR("radeon: ib test failed (0x%08X)\n", tmp);
r = -EINVAL;
}
radeon_ib_free(rdev, &ib);
return r;
}
/**
* cik_sdma_is_lockup - Check if the DMA engine is locked up
*
* @rdev: radeon_device pointer
* @ring: radeon_ring structure holding ring information
*
* Check if the async DMA engine is locked up (CIK).
* Returns true if the engine appears to be locked up, false if not.
*/
bool cik_sdma_is_lockup(struct radeon_device *rdev, struct radeon_ring *ring)
{
u32 reset_mask = cik_gpu_check_soft_reset(rdev);
u32 mask;
if (ring->idx == R600_RING_TYPE_DMA_INDEX)
mask = RADEON_RESET_DMA;
else
mask = RADEON_RESET_DMA1;
if (!(reset_mask & mask)) {
radeon_ring_lockup_update(rdev, ring);
return false;
}
return radeon_ring_test_lockup(rdev, ring);
}
/**
* cik_sdma_vm_copy_pages - update PTEs by copying them from the GART
*
* @rdev: radeon_device pointer
* @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 sDMA (CIK).
*/
void cik_sdma_vm_copy_pages(struct radeon_device *rdev,
struct radeon_ib *ib,
uint64_t pe, uint64_t src,
unsigned count)
{
while (count) {
unsigned bytes = count * 8;
if (bytes > 0x1FFFF8)
bytes = 0x1FFFF8;
ib->ptr[ib->length_dw++] = SDMA_PACKET(SDMA_OPCODE_COPY,
SDMA_WRITE_SUB_OPCODE_LINEAR, 0);
ib->ptr[ib->length_dw++] = bytes;
ib->ptr[ib->length_dw++] = 0; /* src/dst endian swap */
ib->ptr[ib->length_dw++] = lower_32_bits(src);
ib->ptr[ib->length_dw++] = upper_32_bits(src);
ib->ptr[ib->length_dw++] = lower_32_bits(pe);
ib->ptr[ib->length_dw++] = upper_32_bits(pe);
pe += bytes;
src += bytes;
count -= bytes / 8;
}
}
/**
* cik_sdma_vm_write_pages - update PTEs by writing them manually
*
* @rdev: radeon_device pointer
* @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 PTEs by writing them manually using sDMA (CIK).
*/
void cik_sdma_vm_write_pages(struct radeon_device *rdev,
struct radeon_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;
/* for non-physically contiguous pages (system) */
ib->ptr[ib->length_dw++] = SDMA_PACKET(SDMA_OPCODE_WRITE,
SDMA_WRITE_SUB_OPCODE_LINEAR, 0);
ib->ptr[ib->length_dw++] = pe;
ib->ptr[ib->length_dw++] = upper_32_bits(pe);
ib->ptr[ib->length_dw++] = ndw;
for (; ndw > 0; ndw -= 2, --count, pe += 8) {
if (flags & R600_PTE_SYSTEM) {
value = radeon_vm_map_gart(rdev, addr);
} else if (flags & R600_PTE_VALID) {
value = addr;
} else {
value = 0;
}
addr += incr;
value |= flags;
ib->ptr[ib->length_dw++] = value;
ib->ptr[ib->length_dw++] = upper_32_bits(value);
}
}
}
/**
* cik_sdma_vm_set_pages - update the page tables using sDMA
*
* @rdev: radeon_device pointer
* @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).
*/
void cik_sdma_vm_set_pages(struct radeon_device *rdev,
struct radeon_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;
if (ndw > 0x7FFFF)
ndw = 0x7FFFF;
if (flags & R600_PTE_VALID)
value = addr;
else
value = 0;
/* for physically contiguous pages (vram) */
ib->ptr[ib->length_dw++] = SDMA_PACKET(SDMA_OPCODE_GENERATE_PTE_PDE, 0, 0);
ib->ptr[ib->length_dw++] = pe; /* dst addr */
ib->ptr[ib->length_dw++] = upper_32_bits(pe);
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;
ib->ptr[ib->length_dw++] = ndw; /* number of entries */
pe += ndw * 8;
addr += ndw * incr;
count -= ndw;
}
}
/**
* cik_sdma_vm_pad_ib - pad the IB to the required number of dw
*
* @ib: indirect buffer to fill with padding
*
*/
void cik_sdma_vm_pad_ib(struct radeon_ib *ib)
{
while (ib->length_dw & 0x7)
ib->ptr[ib->length_dw++] = SDMA_PACKET(SDMA_OPCODE_NOP, 0, 0);
}
/**
* cik_dma_vm_flush - cik vm flush using sDMA
*
* @rdev: radeon_device pointer
*
* Update the page table base and flush the VM TLB
* using sDMA (CIK).
*/
void cik_dma_vm_flush(struct radeon_device *rdev, struct radeon_ring *ring,
unsigned vm_id, uint64_t pd_addr)
{
u32 extra_bits = (SDMA_POLL_REG_MEM_EXTRA_OP(0) |
SDMA_POLL_REG_MEM_EXTRA_FUNC(0)); /* always */
radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_SRBM_WRITE, 0, 0xf000));
if (vm_id < 8) {
radeon_ring_write(ring, (VM_CONTEXT0_PAGE_TABLE_BASE_ADDR + (vm_id << 2)) >> 2);
} else {
radeon_ring_write(ring, (VM_CONTEXT8_PAGE_TABLE_BASE_ADDR + ((vm_id - 8) << 2)) >> 2);
}
radeon_ring_write(ring, pd_addr >> 12);
/* update SH_MEM_* regs */
radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_SRBM_WRITE, 0, 0xf000));
radeon_ring_write(ring, SRBM_GFX_CNTL >> 2);
radeon_ring_write(ring, VMID(vm_id));
radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_SRBM_WRITE, 0, 0xf000));
radeon_ring_write(ring, SH_MEM_BASES >> 2);
radeon_ring_write(ring, 0);
radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_SRBM_WRITE, 0, 0xf000));
radeon_ring_write(ring, SH_MEM_CONFIG >> 2);
radeon_ring_write(ring, 0);
radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_SRBM_WRITE, 0, 0xf000));
radeon_ring_write(ring, SH_MEM_APE1_BASE >> 2);
radeon_ring_write(ring, 1);
radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_SRBM_WRITE, 0, 0xf000));
radeon_ring_write(ring, SH_MEM_APE1_LIMIT >> 2);
radeon_ring_write(ring, 0);
radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_SRBM_WRITE, 0, 0xf000));
radeon_ring_write(ring, SRBM_GFX_CNTL >> 2);
radeon_ring_write(ring, VMID(0));
/* flush HDP */
cik_sdma_hdp_flush_ring_emit(rdev, ring->idx);
/* flush TLB */
radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_SRBM_WRITE, 0, 0xf000));
radeon_ring_write(ring, VM_INVALIDATE_REQUEST >> 2);
radeon_ring_write(ring, 1 << vm_id);
radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_POLL_REG_MEM, 0, extra_bits));
radeon_ring_write(ring, VM_INVALIDATE_REQUEST >> 2);
radeon_ring_write(ring, 0);
radeon_ring_write(ring, 0); /* reference */
radeon_ring_write(ring, 0); /* mask */
radeon_ring_write(ring, (0xfff << 16) | 10); /* retry count, poll interval */
}