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authorLinus Torvalds <torvalds@linux-foundation.org>2017-05-12 11:48:26 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2017-05-12 11:48:26 -0700
commita34ab101a9d27a2995142b47f9857fb46fcb072a (patch)
treea9d5237a5706d5993c78d4f53232ddff86cdf9d1 /drivers/gpu/drm/amd/amdgpu/vce_v4_0.c
parentMerge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending (diff)
parentdrm/i915: Make vblank evade warnings optional (diff)
downloadlinux-dev-a34ab101a9d27a2995142b47f9857fb46fcb072a.tar.xz
linux-dev-a34ab101a9d27a2995142b47f9857fb46fcb072a.zip
Merge tag 'drm-fixes-for-v4.12-rc1' of git://people.freedesktop.org/~airlied/linux
Pull drm fixes from Dave Airlie: "AMD, nouveau, one i915, and one EDID fix for v4.12-rc1 Some fixes that it would be good to have in rc1. It contains the i915 quiet fix that you reported. It also has an amdgpu fixes pull, with lots of ongoing work on Vega10 which is new in this kernel and is preliminary support so may have a fair bit of movement. Otherwise a few non-Vega10 AMD fixes, one EDID fix and some nouveau regression fixers" * tag 'drm-fixes-for-v4.12-rc1' of git://people.freedesktop.org/~airlied/linux: (144 commits) drm/i915: Make vblank evade warnings optional drm/nouveau/therm: remove ineffective workarounds for alarm bugs drm/nouveau/tmr: avoid processing completed alarms when adding a new one drm/nouveau/tmr: fix corruption of the pending list when rescheduling an alarm drm/nouveau/tmr: handle races with hw when updating the next alarm time drm/nouveau/tmr: ack interrupt before processing alarms drm/nouveau/core: fix static checker warning drm/nouveau/fb/ram/gf100-: remove 0x10f200 read drm/nouveau/kms/nv50: skip core channel cursor update on position-only changes drm/nouveau/kms/nv50: fix source-rect-only plane updates drm/nouveau/kms/nv50: remove pointless argument to window atomic_check_acquire() drm/amd/powerplay: refine pwm1_enable callback functions for CI. drm/amd/powerplay: refine pwm1_enable callback functions for vi. drm/amd/powerplay: refine pwm1_enable callback functions for Vega10. drm/amdgpu: refine amdgpu pwm1_enable sysfs interface. drm/amdgpu: add amd fan ctrl mode enums. drm/amd/powerplay: add more smu message on Vega10. drm/amdgpu: fix dependency issue drm/amd: fix init order of sched job drm/amdgpu: add some additional vega10 pci ids ...
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/vce_v4_0.c')
-rw-r--r--drivers/gpu/drm/amd/amdgpu/vce_v4_0.c224
1 files changed, 80 insertions, 144 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/vce_v4_0.c b/drivers/gpu/drm/amd/amdgpu/vce_v4_0.c
index edde5fe938d6..139f964196b4 100644
--- a/drivers/gpu/drm/amd/amdgpu/vce_v4_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/vce_v4_0.c
@@ -49,63 +49,6 @@ static void vce_v4_0_mc_resume(struct amdgpu_device *adev);
static void vce_v4_0_set_ring_funcs(struct amdgpu_device *adev);
static void vce_v4_0_set_irq_funcs(struct amdgpu_device *adev);
-static inline void mmsch_insert_direct_wt(struct mmsch_v1_0_cmd_direct_write *direct_wt,
- uint32_t *init_table,
- uint32_t reg_offset,
- uint32_t value)
-{
- direct_wt->cmd_header.reg_offset = reg_offset;
- direct_wt->reg_value = value;
- memcpy((void *)init_table, direct_wt, sizeof(struct mmsch_v1_0_cmd_direct_write));
-}
-
-static inline void mmsch_insert_direct_rd_mod_wt(struct mmsch_v1_0_cmd_direct_read_modify_write *direct_rd_mod_wt,
- uint32_t *init_table,
- uint32_t reg_offset,
- uint32_t mask, uint32_t data)
-{
- direct_rd_mod_wt->cmd_header.reg_offset = reg_offset;
- direct_rd_mod_wt->mask_value = mask;
- direct_rd_mod_wt->write_data = data;
- memcpy((void *)init_table, direct_rd_mod_wt,
- sizeof(struct mmsch_v1_0_cmd_direct_read_modify_write));
-}
-
-static inline void mmsch_insert_direct_poll(struct mmsch_v1_0_cmd_direct_polling *direct_poll,
- uint32_t *init_table,
- uint32_t reg_offset,
- uint32_t mask, uint32_t wait)
-{
- direct_poll->cmd_header.reg_offset = reg_offset;
- direct_poll->mask_value = mask;
- direct_poll->wait_value = wait;
- memcpy((void *)init_table, direct_poll, sizeof(struct mmsch_v1_0_cmd_direct_polling));
-}
-
-#define INSERT_DIRECT_RD_MOD_WT(reg, mask, data) { \
- mmsch_insert_direct_rd_mod_wt(&direct_rd_mod_wt, \
- init_table, (reg), \
- (mask), (data)); \
- init_table += sizeof(struct mmsch_v1_0_cmd_direct_read_modify_write)/4; \
- table_size += sizeof(struct mmsch_v1_0_cmd_direct_read_modify_write)/4; \
-}
-
-#define INSERT_DIRECT_WT(reg, value) { \
- mmsch_insert_direct_wt(&direct_wt, \
- init_table, (reg), \
- (value)); \
- init_table += sizeof(struct mmsch_v1_0_cmd_direct_write)/4; \
- table_size += sizeof(struct mmsch_v1_0_cmd_direct_write)/4; \
-}
-
-#define INSERT_DIRECT_POLL(reg, mask, wait) { \
- mmsch_insert_direct_poll(&direct_poll, \
- init_table, (reg), \
- (mask), (wait)); \
- init_table += sizeof(struct mmsch_v1_0_cmd_direct_polling)/4; \
- table_size += sizeof(struct mmsch_v1_0_cmd_direct_polling)/4; \
-}
-
/**
* vce_v4_0_ring_get_rptr - get read pointer
*
@@ -280,60 +223,73 @@ static int vce_v4_0_sriov_start(struct amdgpu_device *adev)
init_table += header->vce_table_offset;
ring = &adev->vce.ring[0];
- INSERT_DIRECT_WT(SOC15_REG_OFFSET(VCE, 0, mmVCE_RB_RPTR), ring->wptr);
- INSERT_DIRECT_WT(SOC15_REG_OFFSET(VCE, 0, mmVCE_RB_WPTR), ring->wptr);
- INSERT_DIRECT_WT(SOC15_REG_OFFSET(VCE, 0, mmVCE_RB_BASE_LO), lower_32_bits(ring->gpu_addr));
- INSERT_DIRECT_WT(SOC15_REG_OFFSET(VCE, 0, mmVCE_RB_BASE_HI), upper_32_bits(ring->gpu_addr));
- INSERT_DIRECT_WT(SOC15_REG_OFFSET(VCE, 0, mmVCE_RB_SIZE), ring->ring_size / 4);
+ MMSCH_V1_0_INSERT_DIRECT_WT(SOC15_REG_OFFSET(VCE, 0, mmVCE_RB_BASE_LO),
+ lower_32_bits(ring->gpu_addr));
+ MMSCH_V1_0_INSERT_DIRECT_WT(SOC15_REG_OFFSET(VCE, 0, mmVCE_RB_BASE_HI),
+ upper_32_bits(ring->gpu_addr));
+ MMSCH_V1_0_INSERT_DIRECT_WT(SOC15_REG_OFFSET(VCE, 0, mmVCE_RB_SIZE),
+ ring->ring_size / 4);
/* BEGING OF MC_RESUME */
- INSERT_DIRECT_RD_MOD_WT(SOC15_REG_OFFSET(VCE, 0, mmVCE_CLOCK_GATING_A), ~(1 << 16), 0);
- INSERT_DIRECT_RD_MOD_WT(SOC15_REG_OFFSET(VCE, 0, mmVCE_UENC_CLOCK_GATING), ~0xFF9FF000, 0x1FF000);
- INSERT_DIRECT_RD_MOD_WT(SOC15_REG_OFFSET(VCE, 0, mmVCE_UENC_REG_CLOCK_GATING), ~0x3F, 0x3F);
- INSERT_DIRECT_WT(SOC15_REG_OFFSET(VCE, 0, mmVCE_CLOCK_GATING_B), 0x1FF);
-
- INSERT_DIRECT_WT(SOC15_REG_OFFSET(VCE, 0, mmVCE_LMI_CTRL), 0x398000);
- INSERT_DIRECT_RD_MOD_WT(SOC15_REG_OFFSET(VCE, 0, mmVCE_LMI_CACHE_CTRL), ~0x1, 0);
- INSERT_DIRECT_WT(SOC15_REG_OFFSET(VCE, 0, mmVCE_LMI_SWAP_CNTL), 0);
- INSERT_DIRECT_WT(SOC15_REG_OFFSET(VCE, 0, mmVCE_LMI_SWAP_CNTL1), 0);
- INSERT_DIRECT_WT(SOC15_REG_OFFSET(VCE, 0, mmVCE_LMI_VM_CTRL), 0);
-
- INSERT_DIRECT_WT(SOC15_REG_OFFSET(VCE, 0, mmVCE_LMI_VCPU_CACHE_40BIT_BAR0), adev->vce.gpu_addr >> 8);
- INSERT_DIRECT_WT(SOC15_REG_OFFSET(VCE, 0, mmVCE_LMI_VCPU_CACHE_40BIT_BAR1), adev->vce.gpu_addr >> 8);
- INSERT_DIRECT_WT(SOC15_REG_OFFSET(VCE, 0, mmVCE_LMI_VCPU_CACHE_40BIT_BAR2), adev->vce.gpu_addr >> 8);
+ MMSCH_V1_0_INSERT_DIRECT_WT(SOC15_REG_OFFSET(VCE, 0, mmVCE_LMI_CTRL), 0x398000);
+ MMSCH_V1_0_INSERT_DIRECT_RD_MOD_WT(SOC15_REG_OFFSET(VCE, 0, mmVCE_LMI_CACHE_CTRL), ~0x1, 0);
+ MMSCH_V1_0_INSERT_DIRECT_WT(SOC15_REG_OFFSET(VCE, 0, mmVCE_LMI_SWAP_CNTL), 0);
+ MMSCH_V1_0_INSERT_DIRECT_WT(SOC15_REG_OFFSET(VCE, 0, mmVCE_LMI_SWAP_CNTL1), 0);
+ MMSCH_V1_0_INSERT_DIRECT_WT(SOC15_REG_OFFSET(VCE, 0, mmVCE_LMI_VM_CTRL), 0);
+
+ if (adev->firmware.load_type == AMDGPU_FW_LOAD_PSP) {
+ MMSCH_V1_0_INSERT_DIRECT_WT(SOC15_REG_OFFSET(VCE, 0, mmVCE_LMI_VCPU_CACHE_40BIT_BAR0),
+ adev->firmware.ucode[AMDGPU_UCODE_ID_VCE].mc_addr >> 8);
+ MMSCH_V1_0_INSERT_DIRECT_WT(SOC15_REG_OFFSET(VCE, 0, mmVCE_LMI_VCPU_CACHE_40BIT_BAR1),
+ adev->firmware.ucode[AMDGPU_UCODE_ID_VCE].mc_addr >> 8);
+ MMSCH_V1_0_INSERT_DIRECT_WT(SOC15_REG_OFFSET(VCE, 0, mmVCE_LMI_VCPU_CACHE_40BIT_BAR2),
+ adev->firmware.ucode[AMDGPU_UCODE_ID_VCE].mc_addr >> 8);
+ } else {
+ MMSCH_V1_0_INSERT_DIRECT_WT(SOC15_REG_OFFSET(VCE, 0, mmVCE_LMI_VCPU_CACHE_40BIT_BAR0),
+ adev->vce.gpu_addr >> 8);
+ MMSCH_V1_0_INSERT_DIRECT_WT(SOC15_REG_OFFSET(VCE, 0, mmVCE_LMI_VCPU_CACHE_40BIT_BAR1),
+ adev->vce.gpu_addr >> 8);
+ MMSCH_V1_0_INSERT_DIRECT_WT(SOC15_REG_OFFSET(VCE, 0, mmVCE_LMI_VCPU_CACHE_40BIT_BAR2),
+ adev->vce.gpu_addr >> 8);
+ }
offset = AMDGPU_VCE_FIRMWARE_OFFSET;
size = VCE_V4_0_FW_SIZE;
- INSERT_DIRECT_WT(SOC15_REG_OFFSET(VCE, 0, mmVCE_VCPU_CACHE_OFFSET0), offset & 0x7FFFFFFF);
- INSERT_DIRECT_WT(SOC15_REG_OFFSET(VCE, 0, mmVCE_VCPU_CACHE_SIZE0), size);
+ MMSCH_V1_0_INSERT_DIRECT_WT(SOC15_REG_OFFSET(VCE, 0, mmVCE_VCPU_CACHE_OFFSET0),
+ offset & 0x7FFFFFFF);
+ MMSCH_V1_0_INSERT_DIRECT_WT(SOC15_REG_OFFSET(VCE, 0, mmVCE_VCPU_CACHE_SIZE0), size);
offset += size;
size = VCE_V4_0_STACK_SIZE;
- INSERT_DIRECT_WT(SOC15_REG_OFFSET(VCE, 0, mmVCE_VCPU_CACHE_OFFSET1), offset & 0x7FFFFFFF);
- INSERT_DIRECT_WT(SOC15_REG_OFFSET(VCE, 0, mmVCE_VCPU_CACHE_SIZE1), size);
+ MMSCH_V1_0_INSERT_DIRECT_WT(SOC15_REG_OFFSET(VCE, 0, mmVCE_VCPU_CACHE_OFFSET1),
+ offset & 0x7FFFFFFF);
+ MMSCH_V1_0_INSERT_DIRECT_WT(SOC15_REG_OFFSET(VCE, 0, mmVCE_VCPU_CACHE_SIZE1), size);
offset += size;
size = VCE_V4_0_DATA_SIZE;
- INSERT_DIRECT_WT(SOC15_REG_OFFSET(VCE, 0, mmVCE_VCPU_CACHE_OFFSET2), offset & 0x7FFFFFFF);
- INSERT_DIRECT_WT(SOC15_REG_OFFSET(VCE, 0, mmVCE_VCPU_CACHE_SIZE2), size);
+ MMSCH_V1_0_INSERT_DIRECT_WT(SOC15_REG_OFFSET(VCE, 0, mmVCE_VCPU_CACHE_OFFSET2),
+ offset & 0x7FFFFFFF);
+ MMSCH_V1_0_INSERT_DIRECT_WT(SOC15_REG_OFFSET(VCE, 0, mmVCE_VCPU_CACHE_SIZE2), size);
- INSERT_DIRECT_RD_MOD_WT(SOC15_REG_OFFSET(VCE, 0, mmVCE_LMI_CTRL2), ~0x100, 0);
- INSERT_DIRECT_RD_MOD_WT(SOC15_REG_OFFSET(VCE, 0, mmVCE_SYS_INT_EN),
- 0xffffffff, VCE_SYS_INT_EN__VCE_SYS_INT_TRAP_INTERRUPT_EN_MASK);
+ MMSCH_V1_0_INSERT_DIRECT_RD_MOD_WT(SOC15_REG_OFFSET(VCE, 0, mmVCE_LMI_CTRL2), ~0x100, 0);
+ MMSCH_V1_0_INSERT_DIRECT_RD_MOD_WT(SOC15_REG_OFFSET(VCE, 0, mmVCE_SYS_INT_EN),
+ 0xffffffff, VCE_SYS_INT_EN__VCE_SYS_INT_TRAP_INTERRUPT_EN_MASK);
/* end of MC_RESUME */
- INSERT_DIRECT_RD_MOD_WT(SOC15_REG_OFFSET(VCE, 0, mmVCE_VCPU_CNTL),
- ~0x200001, VCE_VCPU_CNTL__CLK_EN_MASK);
- INSERT_DIRECT_RD_MOD_WT(SOC15_REG_OFFSET(VCE, 0, mmVCE_SOFT_RESET),
- ~VCE_SOFT_RESET__ECPU_SOFT_RESET_MASK, 0);
+ MMSCH_V1_0_INSERT_DIRECT_RD_MOD_WT(SOC15_REG_OFFSET(VCE, 0, mmVCE_STATUS),
+ VCE_STATUS__JOB_BUSY_MASK, ~VCE_STATUS__JOB_BUSY_MASK);
+ MMSCH_V1_0_INSERT_DIRECT_RD_MOD_WT(SOC15_REG_OFFSET(VCE, 0, mmVCE_VCPU_CNTL),
+ ~0x200001, VCE_VCPU_CNTL__CLK_EN_MASK);
+ MMSCH_V1_0_INSERT_DIRECT_RD_MOD_WT(SOC15_REG_OFFSET(VCE, 0, mmVCE_SOFT_RESET),
+ ~VCE_SOFT_RESET__ECPU_SOFT_RESET_MASK, 0);
- INSERT_DIRECT_POLL(SOC15_REG_OFFSET(VCE, 0, mmVCE_STATUS),
- VCE_STATUS_VCPU_REPORT_FW_LOADED_MASK,
- VCE_STATUS_VCPU_REPORT_FW_LOADED_MASK);
+ MMSCH_V1_0_INSERT_DIRECT_POLL(SOC15_REG_OFFSET(VCE, 0, mmVCE_STATUS),
+ VCE_STATUS_VCPU_REPORT_FW_LOADED_MASK,
+ VCE_STATUS_VCPU_REPORT_FW_LOADED_MASK);
/* clear BUSY flag */
- INSERT_DIRECT_RD_MOD_WT(SOC15_REG_OFFSET(VCE, 0, mmVCE_STATUS),
- ~VCE_STATUS__JOB_BUSY_MASK, 0);
+ MMSCH_V1_0_INSERT_DIRECT_RD_MOD_WT(SOC15_REG_OFFSET(VCE, 0, mmVCE_STATUS),
+ ~VCE_STATUS__JOB_BUSY_MASK, 0);
/* add end packet */
memcpy((void *)init_table, &end, sizeof(struct mmsch_v1_0_cmd_end));
@@ -494,20 +450,9 @@ static int vce_v4_0_sw_init(void *handle)
return r;
}
- if (amdgpu_sriov_vf(adev)) {
- r = amdgpu_bo_create_kernel(adev, PAGE_SIZE, PAGE_SIZE,
- AMDGPU_GEM_DOMAIN_VRAM,
- &adev->virt.mm_table.bo,
- &adev->virt.mm_table.gpu_addr,
- (void *)&adev->virt.mm_table.cpu_addr);
- if (!r) {
- memset((void *)adev->virt.mm_table.cpu_addr, 0, PAGE_SIZE);
- printk("mm table gpu addr = 0x%llx, cpu addr = %p. \n",
- adev->virt.mm_table.gpu_addr,
- adev->virt.mm_table.cpu_addr);
- }
+ r = amdgpu_virt_alloc_mm_table(adev);
+ if (r)
return r;
- }
return r;
}
@@ -518,10 +463,7 @@ static int vce_v4_0_sw_fini(void *handle)
struct amdgpu_device *adev = (struct amdgpu_device *)handle;
/* free MM table */
- if (amdgpu_sriov_vf(adev))
- amdgpu_bo_free_kernel(&adev->virt.mm_table.bo,
- &adev->virt.mm_table.gpu_addr,
- (void *)&adev->virt.mm_table.cpu_addr);
+ amdgpu_virt_free_mm_table(adev);
r = amdgpu_vce_suspend(adev);
if (r)
@@ -973,44 +915,37 @@ static void vce_v4_0_ring_insert_end(struct amdgpu_ring *ring)
static void vce_v4_0_emit_vm_flush(struct amdgpu_ring *ring,
unsigned int vm_id, uint64_t pd_addr)
{
+ struct amdgpu_vmhub *hub = &ring->adev->vmhub[ring->funcs->vmhub];
uint32_t req = ring->adev->gart.gart_funcs->get_invalidate_req(vm_id);
- unsigned eng = ring->idx;
- unsigned i;
+ unsigned eng = ring->vm_inv_eng;
pd_addr = pd_addr | 0x1; /* valid bit */
/* now only use physical base address of PDE and valid */
BUG_ON(pd_addr & 0xFFFF00000000003EULL);
- for (i = 0; i < AMDGPU_MAX_VMHUBS; ++i) {
- struct amdgpu_vmhub *hub = &ring->adev->vmhub[i];
-
- amdgpu_ring_write(ring, VCE_CMD_REG_WRITE);
- amdgpu_ring_write(ring,
- (hub->ctx0_ptb_addr_hi32 + vm_id * 2) << 2);
- amdgpu_ring_write(ring, upper_32_bits(pd_addr));
-
- amdgpu_ring_write(ring, VCE_CMD_REG_WRITE);
- amdgpu_ring_write(ring,
- (hub->ctx0_ptb_addr_lo32 + vm_id * 2) << 2);
- amdgpu_ring_write(ring, lower_32_bits(pd_addr));
-
- amdgpu_ring_write(ring, VCE_CMD_REG_WAIT);
- amdgpu_ring_write(ring,
- (hub->ctx0_ptb_addr_lo32 + vm_id * 2) << 2);
- amdgpu_ring_write(ring, 0xffffffff);
- amdgpu_ring_write(ring, lower_32_bits(pd_addr));
-
- /* flush TLB */
- amdgpu_ring_write(ring, VCE_CMD_REG_WRITE);
- amdgpu_ring_write(ring, (hub->vm_inv_eng0_req + eng) << 2);
- amdgpu_ring_write(ring, req);
-
- /* wait for flush */
- amdgpu_ring_write(ring, VCE_CMD_REG_WAIT);
- amdgpu_ring_write(ring, (hub->vm_inv_eng0_ack + eng) << 2);
- amdgpu_ring_write(ring, 1 << vm_id);
- amdgpu_ring_write(ring, 1 << vm_id);
- }
+ amdgpu_ring_write(ring, VCE_CMD_REG_WRITE);
+ amdgpu_ring_write(ring, (hub->ctx0_ptb_addr_hi32 + vm_id * 2) << 2);
+ amdgpu_ring_write(ring, upper_32_bits(pd_addr));
+
+ amdgpu_ring_write(ring, VCE_CMD_REG_WRITE);
+ amdgpu_ring_write(ring, (hub->ctx0_ptb_addr_lo32 + vm_id * 2) << 2);
+ amdgpu_ring_write(ring, lower_32_bits(pd_addr));
+
+ amdgpu_ring_write(ring, VCE_CMD_REG_WAIT);
+ amdgpu_ring_write(ring, (hub->ctx0_ptb_addr_lo32 + vm_id * 2) << 2);
+ amdgpu_ring_write(ring, 0xffffffff);
+ amdgpu_ring_write(ring, lower_32_bits(pd_addr));
+
+ /* flush TLB */
+ amdgpu_ring_write(ring, VCE_CMD_REG_WRITE);
+ amdgpu_ring_write(ring, (hub->vm_inv_eng0_req + eng) << 2);
+ amdgpu_ring_write(ring, req);
+
+ /* wait for flush */
+ amdgpu_ring_write(ring, VCE_CMD_REG_WAIT);
+ amdgpu_ring_write(ring, (hub->vm_inv_eng0_ack + eng) << 2);
+ amdgpu_ring_write(ring, 1 << vm_id);
+ amdgpu_ring_write(ring, 1 << vm_id);
}
static int vce_v4_0_set_interrupt_state(struct amdgpu_device *adev,
@@ -1078,12 +1013,13 @@ static const struct amdgpu_ring_funcs vce_v4_0_ring_vm_funcs = {
.align_mask = 0x3f,
.nop = VCE_CMD_NO_OP,
.support_64bit_ptrs = false,
+ .vmhub = AMDGPU_MMHUB,
.get_rptr = vce_v4_0_ring_get_rptr,
.get_wptr = vce_v4_0_ring_get_wptr,
.set_wptr = vce_v4_0_ring_set_wptr,
.parse_cs = amdgpu_vce_ring_parse_cs_vm,
.emit_frame_size =
- 17 * AMDGPU_MAX_VMHUBS + /* vce_v4_0_emit_vm_flush */
+ 17 + /* vce_v4_0_emit_vm_flush */
5 + 5 + /* amdgpu_vce_ring_emit_fence x2 vm fence */
1, /* vce_v4_0_ring_insert_end */
.emit_ib_size = 5, /* vce_v4_0_ring_emit_ib */