linux_kernel/drivers/gpu/drm/amd/amdgpu/vce_v3_0.c

/*
 * Copyright 2014 Advanced Micro Devices, Inc.
 * All Rights Reserved.
 *
 * 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, sub license, 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 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 NON-INFRINGEMENT. IN NO EVENT SHALL
 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS 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.
 *
 * The above copyright notice and this permission notice (including the
 * next paragraph) shall be included in all copies or substantial portions
 * of the Software.
 *
 * Authors: Christian König <christian.koenig@amd.com>
 */

#include <linux/firmware.h>
#include <drm/drmP.h>
#include "amdgpu.h"
#include "amdgpu_vce.h"
#include "vid.h"
#include "vce/vce_3_0_d.h"
#include "vce/vce_3_0_sh_mask.h"
#include "oss/oss_2_0_d.h"
#include "oss/oss_2_0_sh_mask.h"

static void vce_v3_0_mc_resume(struct amdgpu_device *adev);
static void vce_v3_0_set_ring_funcs(struct amdgpu_device *adev);
static void vce_v3_0_set_irq_funcs(struct amdgpu_device *adev);

/**
 * vce_v3_0_ring_get_rptr - get read pointer
 *
 * @ring: amdgpu_ring pointer
 *
 * Returns the current hardware read pointer
 */
static uint32_t vce_v3_0_ring_get_rptr(struct amdgpu_ring *ring)
{
	struct amdgpu_device *adev = ring->adev;

	if (ring == &adev->vce.ring[0])
		return RREG32(mmVCE_RB_RPTR);
	else
		return RREG32(mmVCE_RB_RPTR2);
}

/**
 * vce_v3_0_ring_get_wptr - get write pointer
 *
 * @ring: amdgpu_ring pointer
 *
 * Returns the current hardware write pointer
 */
static uint32_t vce_v3_0_ring_get_wptr(struct amdgpu_ring *ring)
{
	struct amdgpu_device *adev = ring->adev;

	if (ring == &adev->vce.ring[0])
		return RREG32(mmVCE_RB_WPTR);
	else
		return RREG32(mmVCE_RB_WPTR2);
}

/**
 * vce_v3_0_ring_set_wptr - set write pointer
 *
 * @ring: amdgpu_ring pointer
 *
 * Commits the write pointer to the hardware
 */
static void vce_v3_0_ring_set_wptr(struct amdgpu_ring *ring)
{
	struct amdgpu_device *adev = ring->adev;

	if (ring == &adev->vce.ring[0])
		WREG32(mmVCE_RB_WPTR, ring->wptr);
	else
		WREG32(mmVCE_RB_WPTR2, ring->wptr);
}

/**
 * vce_v3_0_start - start VCE block
 *
 * @adev: amdgpu_device pointer
 *
 * Setup and start the VCE block
 */
static int vce_v3_0_start(struct amdgpu_device *adev)
{
	struct amdgpu_ring *ring;
	int i, j, r;

	vce_v3_0_mc_resume(adev);

	/* set BUSY flag */
	WREG32_P(mmVCE_STATUS, 1, ~1);

	ring = &adev->vce.ring[0];
	WREG32(mmVCE_RB_RPTR, ring->wptr);
	WREG32(mmVCE_RB_WPTR, ring->wptr);
	WREG32(mmVCE_RB_BASE_LO, ring->gpu_addr);
	WREG32(mmVCE_RB_BASE_HI, upper_32_bits(ring->gpu_addr));
	WREG32(mmVCE_RB_SIZE, ring->ring_size / 4);

	ring = &adev->vce.ring[1];
	WREG32(mmVCE_RB_RPTR2, ring->wptr);
	WREG32(mmVCE_RB_WPTR2, ring->wptr);
	WREG32(mmVCE_RB_BASE_LO2, ring->gpu_addr);
	WREG32(mmVCE_RB_BASE_HI2, upper_32_bits(ring->gpu_addr));
	WREG32(mmVCE_RB_SIZE2, ring->ring_size / 4);

	WREG32_P(mmVCE_VCPU_CNTL, VCE_VCPU_CNTL__CLK_EN_MASK, ~VCE_VCPU_CNTL__CLK_EN_MASK);

	WREG32_P(mmVCE_SOFT_RESET,
		 VCE_SOFT_RESET__ECPU_SOFT_RESET_MASK,
		 ~VCE_SOFT_RESET__ECPU_SOFT_RESET_MASK);

	mdelay(100);

	WREG32_P(mmVCE_SOFT_RESET, 0, ~VCE_SOFT_RESET__ECPU_SOFT_RESET_MASK);

	for (i = 0; i < 10; ++i) {
		uint32_t status;
		for (j = 0; j < 100; ++j) {
			status = RREG32(mmVCE_STATUS);
			if (status & 2)
				break;
			mdelay(10);
		}
		r = 0;
		if (status & 2)
			break;

		DRM_ERROR("VCE not responding, trying to reset the ECPU!!!\n");
		WREG32_P(mmVCE_SOFT_RESET, VCE_SOFT_RESET__ECPU_SOFT_RESET_MASK,
				~VCE_SOFT_RESET__ECPU_SOFT_RESET_MASK);
		mdelay(10);
		WREG32_P(mmVCE_SOFT_RESET, 0, ~VCE_SOFT_RESET__ECPU_SOFT_RESET_MASK);
		mdelay(10);
		r = -1;
	}

	/* clear BUSY flag */
	WREG32_P(mmVCE_STATUS, 0, ~1);

	if (r) {
		DRM_ERROR("VCE not responding, giving up!!!\n");
		return r;
	}

	return 0;
}

static int vce_v3_0_early_init(struct amdgpu_device *adev)
{
	vce_v3_0_set_ring_funcs(adev);
	vce_v3_0_set_irq_funcs(adev);

	return 0;
}

static int vce_v3_0_sw_init(struct amdgpu_device *adev)
{
	struct amdgpu_ring *ring;
	int r;

	/* VCE */
	r = amdgpu_irq_add_id(adev, 167, &adev->vce.irq);
	if (r)
		return r;

	r = amdgpu_vce_sw_init(adev);
	if (r)
		return r;

	r = amdgpu_vce_resume(adev);
	if (r)
		return r;

	ring = &adev->vce.ring[0];
	sprintf(ring->name, "vce0");
	r = amdgpu_ring_init(adev, ring, 4096, VCE_CMD_NO_OP, 0xf,
			     &adev->vce.irq, 0, AMDGPU_RING_TYPE_VCE);
	if (r)
		return r;

	ring = &adev->vce.ring[1];
	sprintf(ring->name, "vce1");
	r = amdgpu_ring_init(adev, ring, 4096, VCE_CMD_NO_OP, 0xf,
			     &adev->vce.irq, 0, AMDGPU_RING_TYPE_VCE);
	if (r)
		return r;

	return r;
}

static int vce_v3_0_sw_fini(struct amdgpu_device *adev)
{
	int r;

	r = amdgpu_vce_suspend(adev);
	if (r)
		return r;

	r = amdgpu_vce_sw_fini(adev);
	if (r)
		return r;

	return r;
}

static int vce_v3_0_hw_init(struct amdgpu_device *adev)
{
	struct amdgpu_ring *ring;
	int r;

	r = vce_v3_0_start(adev);
	if (r)
		return r;

	ring = &adev->vce.ring[0];
	ring->ready = true;
	r = amdgpu_ring_test_ring(ring);
	if (r) {
		ring->ready = false;
		return r;
	}

	ring = &adev->vce.ring[1];
	ring->ready = true;
	r = amdgpu_ring_test_ring(ring);
	if (r) {
		ring->ready = false;
		return r;
	}

	DRM_INFO("VCE initialized successfully.\n");

	return 0;
}

static int vce_v3_0_hw_fini(struct amdgpu_device *adev)
{
	// TODO
	return 0;
}

static int vce_v3_0_suspend(struct amdgpu_device *adev)
{
	int r;

	r = vce_v3_0_hw_fini(adev);
	if (r)
		return r;

	r = amdgpu_vce_suspend(adev);
	if (r)
		return r;

	return r;
}

static int vce_v3_0_resume(struct amdgpu_device *adev)
{
	int r;

	r = amdgpu_vce_resume(adev);
	if (r)
		return r;

	r = vce_v3_0_hw_init(adev);
	if (r)
		return r;

	return r;
}

static void vce_v3_0_mc_resume(struct amdgpu_device *adev)
{
	uint32_t offset, size;

	WREG32_P(mmVCE_CLOCK_GATING_A, 0, ~(1 << 16));
	WREG32_P(mmVCE_UENC_CLOCK_GATING, 0x1FF000, ~0xFF9FF000);
	WREG32_P(mmVCE_UENC_REG_CLOCK_GATING, 0x3F, ~0x3F);
	WREG32(mmVCE_CLOCK_GATING_B, 0xf7);

	WREG32(mmVCE_LMI_CTRL, 0x00398000);
	WREG32_P(mmVCE_LMI_CACHE_CTRL, 0x0, ~0x1);
	WREG32(mmVCE_LMI_SWAP_CNTL, 0);
	WREG32(mmVCE_LMI_SWAP_CNTL1, 0);
	WREG32(mmVCE_LMI_VM_CTRL, 0);

	WREG32(mmVCE_LMI_VCPU_CACHE_40BIT_BAR, (adev->vce.gpu_addr >> 8));
	offset = AMDGPU_VCE_FIRMWARE_OFFSET;
	size = AMDGPU_GPU_PAGE_ALIGN(adev->vce.fw->size);
	WREG32(mmVCE_VCPU_CACHE_OFFSET0, offset & 0x7fffffff);
	WREG32(mmVCE_VCPU_CACHE_SIZE0, size);

	offset += size;
	size = AMDGPU_VCE_STACK_SIZE;
	WREG32(mmVCE_VCPU_CACHE_OFFSET1, offset & 0x7fffffff);
	WREG32(mmVCE_VCPU_CACHE_SIZE1, size);

	offset += size;
	size = AMDGPU_VCE_HEAP_SIZE;
	WREG32(mmVCE_VCPU_CACHE_OFFSET2, offset & 0x7fffffff);
	WREG32(mmVCE_VCPU_CACHE_SIZE2, size);

	WREG32_P(mmVCE_LMI_CTRL2, 0x0, ~0x100);

	WREG32_P(mmVCE_SYS_INT_EN, VCE_SYS_INT_EN__VCE_SYS_INT_TRAP_INTERRUPT_EN_MASK,
		 ~VCE_SYS_INT_EN__VCE_SYS_INT_TRAP_INTERRUPT_EN_MASK);
}

static bool vce_v3_0_is_idle(struct amdgpu_device *adev)
{
	return !(RREG32(mmSRBM_STATUS2) & SRBM_STATUS2__VCE_BUSY_MASK);
}

static int vce_v3_0_wait_for_idle(struct amdgpu_device *adev)
{
	unsigned i;

	for (i = 0; i < adev->usec_timeout; i++) {
		if (!(RREG32(mmSRBM_STATUS2) & SRBM_STATUS2__VCE_BUSY_MASK))
			return 0;
	}
	return -ETIMEDOUT;
}

static int vce_v3_0_soft_reset(struct amdgpu_device *adev)
{
	WREG32_P(mmSRBM_SOFT_RESET, SRBM_SOFT_RESET__SOFT_RESET_VCE_MASK,
			~SRBM_SOFT_RESET__SOFT_RESET_VCE_MASK);
	mdelay(5);

	return vce_v3_0_start(adev);
}

static void vce_v3_0_print_status(struct amdgpu_device *adev)
{
	dev_info(adev->dev, "VCE 3.0 registers\n");
	dev_info(adev->dev, "  VCE_STATUS=0x%08X\n",
		 RREG32(mmVCE_STATUS));
	dev_info(adev->dev, "  VCE_VCPU_CNTL=0x%08X\n",
		 RREG32(mmVCE_VCPU_CNTL));
	dev_info(adev->dev, "  VCE_VCPU_CACHE_OFFSET0=0x%08X\n",
		 RREG32(mmVCE_VCPU_CACHE_OFFSET0));
	dev_info(adev->dev, "  VCE_VCPU_CACHE_SIZE0=0x%08X\n",
		 RREG32(mmVCE_VCPU_CACHE_SIZE0));
	dev_info(adev->dev, "  VCE_VCPU_CACHE_OFFSET1=0x%08X\n",
		 RREG32(mmVCE_VCPU_CACHE_OFFSET1));
	dev_info(adev->dev, "  VCE_VCPU_CACHE_SIZE1=0x%08X\n",
		 RREG32(mmVCE_VCPU_CACHE_SIZE1));
	dev_info(adev->dev, "  VCE_VCPU_CACHE_OFFSET2=0x%08X\n",
		 RREG32(mmVCE_VCPU_CACHE_OFFSET2));
	dev_info(adev->dev, "  VCE_VCPU_CACHE_SIZE2=0x%08X\n",
		 RREG32(mmVCE_VCPU_CACHE_SIZE2));
	dev_info(adev->dev, "  VCE_SOFT_RESET=0x%08X\n",
		 RREG32(mmVCE_SOFT_RESET));
	dev_info(adev->dev, "  VCE_RB_BASE_LO2=0x%08X\n",
		 RREG32(mmVCE_RB_BASE_LO2));
	dev_info(adev->dev, "  VCE_RB_BASE_HI2=0x%08X\n",
		 RREG32(mmVCE_RB_BASE_HI2));
	dev_info(adev->dev, "  VCE_RB_SIZE2=0x%08X\n",
		 RREG32(mmVCE_RB_SIZE2));
	dev_info(adev->dev, "  VCE_RB_RPTR2=0x%08X\n",
		 RREG32(mmVCE_RB_RPTR2));
	dev_info(adev->dev, "  VCE_RB_WPTR2=0x%08X\n",
		 RREG32(mmVCE_RB_WPTR2));
	dev_info(adev->dev, "  VCE_RB_BASE_LO=0x%08X\n",
		 RREG32(mmVCE_RB_BASE_LO));
	dev_info(adev->dev, "  VCE_RB_BASE_HI=0x%08X\n",
		 RREG32(mmVCE_RB_BASE_HI));
	dev_info(adev->dev, "  VCE_RB_SIZE=0x%08X\n",
		 RREG32(mmVCE_RB_SIZE));
	dev_info(adev->dev, "  VCE_RB_RPTR=0x%08X\n",
		 RREG32(mmVCE_RB_RPTR));
	dev_info(adev->dev, "  VCE_RB_WPTR=0x%08X\n",
		 RREG32(mmVCE_RB_WPTR));
	dev_info(adev->dev, "  VCE_CLOCK_GATING_A=0x%08X\n",
		 RREG32(mmVCE_CLOCK_GATING_A));
	dev_info(adev->dev, "  VCE_CLOCK_GATING_B=0x%08X\n",
		 RREG32(mmVCE_CLOCK_GATING_B));
	dev_info(adev->dev, "  VCE_UENC_CLOCK_GATING=0x%08X\n",
		 RREG32(mmVCE_UENC_CLOCK_GATING));
	dev_info(adev->dev, "  VCE_UENC_REG_CLOCK_GATING=0x%08X\n",
		 RREG32(mmVCE_UENC_REG_CLOCK_GATING));
	dev_info(adev->dev, "  VCE_SYS_INT_EN=0x%08X\n",
		 RREG32(mmVCE_SYS_INT_EN));
	dev_info(adev->dev, "  VCE_LMI_CTRL2=0x%08X\n",
		 RREG32(mmVCE_LMI_CTRL2));
	dev_info(adev->dev, "  VCE_LMI_CTRL=0x%08X\n",
		 RREG32(mmVCE_LMI_CTRL));
	dev_info(adev->dev, "  VCE_LMI_VM_CTRL=0x%08X\n",
		 RREG32(mmVCE_LMI_VM_CTRL));
	dev_info(adev->dev, "  VCE_LMI_SWAP_CNTL=0x%08X\n",
		 RREG32(mmVCE_LMI_SWAP_CNTL));
	dev_info(adev->dev, "  VCE_LMI_SWAP_CNTL1=0x%08X\n",
		 RREG32(mmVCE_LMI_SWAP_CNTL1));
	dev_info(adev->dev, "  VCE_LMI_CACHE_CTRL=0x%08X\n",
		 RREG32(mmVCE_LMI_CACHE_CTRL));
}

static int vce_v3_0_set_interrupt_state(struct amdgpu_device *adev,
					struct amdgpu_irq_src *source,
					unsigned type,
					enum amdgpu_interrupt_state state)
{
	uint32_t val = 0;

	if (state == AMDGPU_IRQ_STATE_ENABLE)
		val |= VCE_SYS_INT_EN__VCE_SYS_INT_TRAP_INTERRUPT_EN_MASK;

	WREG32_P(mmVCE_SYS_INT_EN, val, ~VCE_SYS_INT_EN__VCE_SYS_INT_TRAP_INTERRUPT_EN_MASK);
	return 0;
}

static int vce_v3_0_process_interrupt(struct amdgpu_device *adev,
				      struct amdgpu_irq_src *source,
				      struct amdgpu_iv_entry *entry)
{
	DRM_DEBUG("IH: VCE\n");
	switch (entry->src_data) {
	case 0:
		amdgpu_fence_process(&adev->vce.ring[0]);
		break;
	case 1:
		amdgpu_fence_process(&adev->vce.ring[1]);
		break;
	default:
		DRM_ERROR("Unhandled interrupt: %d %d\n",
			  entry->src_id, entry->src_data);
		break;
	}

	return 0;
}

static int vce_v3_0_set_clockgating_state(struct amdgpu_device *adev,
					  enum amdgpu_clockgating_state state)
{
	//TODO
	return 0;
}

static int vce_v3_0_set_powergating_state(struct amdgpu_device *adev,
					  enum amdgpu_powergating_state state)
{
	/* This doesn't actually powergate the VCE block.
	 * That's done in the dpm code via the SMC.  This
	 * just re-inits the block as necessary.  The actual
	 * gating still happens in the dpm code.  We should
	 * revisit this when there is a cleaner line between
	 * the smc and the hw blocks
	 */
	if (state == AMDGPU_PG_STATE_GATE)
		/* XXX do we need a vce_v3_0_stop()? */
		return 0;
	else
		return vce_v3_0_start(adev);
}

const struct amdgpu_ip_funcs vce_v3_0_ip_funcs = {
	.early_init = vce_v3_0_early_init,
	.late_init = NULL,
	.sw_init = vce_v3_0_sw_init,
	.sw_fini = vce_v3_0_sw_fini,
	.hw_init = vce_v3_0_hw_init,
	.hw_fini = vce_v3_0_hw_fini,
	.suspend = vce_v3_0_suspend,
	.resume = vce_v3_0_resume,
	.is_idle = vce_v3_0_is_idle,
	.wait_for_idle = vce_v3_0_wait_for_idle,
	.soft_reset = vce_v3_0_soft_reset,
	.print_status = vce_v3_0_print_status,
	.set_clockgating_state = vce_v3_0_set_clockgating_state,
	.set_powergating_state = vce_v3_0_set_powergating_state,
};

static const struct amdgpu_ring_funcs vce_v3_0_ring_funcs = {
	.get_rptr = vce_v3_0_ring_get_rptr,
	.get_wptr = vce_v3_0_ring_get_wptr,
	.set_wptr = vce_v3_0_ring_set_wptr,
	.parse_cs = amdgpu_vce_ring_parse_cs,
	.emit_ib = amdgpu_vce_ring_emit_ib,
	.emit_fence = amdgpu_vce_ring_emit_fence,
	.emit_semaphore = amdgpu_vce_ring_emit_semaphore,
	.test_ring = amdgpu_vce_ring_test_ring,
	.test_ib = amdgpu_vce_ring_test_ib,
	.is_lockup = amdgpu_ring_test_lockup,
};

static void vce_v3_0_set_ring_funcs(struct amdgpu_device *adev)
{
	adev->vce.ring[0].funcs = &vce_v3_0_ring_funcs;
	adev->vce.ring[1].funcs = &vce_v3_0_ring_funcs;
}

static const struct amdgpu_irq_src_funcs vce_v3_0_irq_funcs = {
	.set = vce_v3_0_set_interrupt_state,
	.process = vce_v3_0_process_interrupt,
};

static void vce_v3_0_set_irq_funcs(struct amdgpu_device *adev)
{
	adev->vce.irq.num_types = 1;
	adev->vce.irq.funcs = &vce_v3_0_irq_funcs;
};