[PATCH OLK-6.6 0/5] drm: LoongArch: fix rx550/gfx6/gfx7/gfx8 error
Tianrui Zhao (3): drm/amdgpu: Fix pcie order dislocation drm/amdgpu: make duplicated EOP packet for GFX6 have real content drm/amdgpu: Fix RX550 pcie order dislocation. lvjianmin (2): drm/radeon: repeat the same EOP packet for EOP workaround on CIK drm/amdgpu: make duplicated EOP packet for GFX7/8 have real content drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c | 5 + drivers/gpu/drm/amd/amdgpu/amdgpu_ih.c | 161 ++++++++++++++++++++++++ drivers/gpu/drm/amd/amdgpu/amdgpu_ih.h | 6 + drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c | 4 + drivers/gpu/drm/amd/amdgpu/amdgpu_irq.h | 3 + drivers/gpu/drm/amd/amdgpu/gfx_v6_0.c | 19 +++ drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c | 6 + drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c | 6 + drivers/gpu/drm/radeon/cik.c | 4 + 9 files changed, 214 insertions(+) -- 2.33.0
From: Tianrui Zhao <zhaotianrui@loongson.cn> LoongArch inclusion category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/IC1M5U CVE: NA -------------------------------- Signed-off-by: Tianrui Zhao <zhaotianrui@loongson.cn> Change-Id: I6050c8c50f24a64cee36a9d9e45f16d0cfb2dbda Signed-off-by: Hongchen Zhang <zhanghongchen@loongson.cn> --- drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c | 5 + drivers/gpu/drm/amd/amdgpu/amdgpu_ih.c | 160 ++++++++++++++++++++++++ drivers/gpu/drm/amd/amdgpu/amdgpu_ih.h | 6 + drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c | 4 + drivers/gpu/drm/amd/amdgpu/amdgpu_irq.h | 3 + 5 files changed, 178 insertions(+) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c index 13c97ba7a820..9c1d396fabc1 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c @@ -1279,6 +1279,11 @@ static int amdgpu_cs_submit(struct amdgpu_cs_parser *p, uint64_t seq; int r; +#ifdef CONFIG_LOONGARCH + while (amdgpu_ih_fix_is_busy(p->adev)) + msleep(20); +#endif + for (i = 0; i < p->gang_size; ++i) drm_sched_job_arm(&p->jobs[i]->base); diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ih.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ih.c index f3b0aaf3ebc6..ba40ed9e2b48 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ih.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ih.c @@ -26,6 +26,10 @@ #include "amdgpu.h" #include "amdgpu_ih.h" +#ifdef CONFIG_LOONGARCH +static void amdgpu_ih_handle_fix_work(struct work_struct *work); +#endif + /** * amdgpu_ih_ring_init - initialize the IH state * @@ -71,6 +75,15 @@ int amdgpu_ih_ring_init(struct amdgpu_device *adev, struct amdgpu_ih_ring *ih, ih->wptr_cpu = &ih->ring[ih->ring_size / 4]; ih->rptr_addr = dma_addr + ih->ring_size + 4; ih->rptr_cpu = &ih->ring[(ih->ring_size / 4) + 1]; + + #ifdef CONFIG_LOONGARCH + INIT_WORK(&adev->irq.ih.fix_work, amdgpu_ih_handle_fix_work); + for (r = 0; r < (adev->irq.ih.ring_size >> 2); r++) + adev->irq.ih.ring[r] = 0xDEADBEFF; + /* memory barrier for writing into ih ring */ + mb(); + #endif + } else { unsigned wptr_offs, rptr_offs; @@ -98,6 +111,15 @@ int amdgpu_ih_ring_init(struct amdgpu_device *adev, struct amdgpu_ih_ring *ih, ih->wptr_cpu = &adev->wb.wb[wptr_offs]; ih->rptr_addr = adev->wb.gpu_addr + rptr_offs * 4; ih->rptr_cpu = &adev->wb.wb[rptr_offs]; + + #ifdef CONFIG_LOONGARCH + INIT_WORK(&adev->irq.ih.fix_work, amdgpu_ih_handle_fix_work); + for (r = 0; r < (adev->irq.ih.ring_size >> 2); r++) + adev->irq.ih.ring[r] = 0xDEADBEFF; + /* memory barrier for writing into ih ring */ + mb(); + #endif + } init_waitqueue_head(&ih->wait_process); @@ -119,6 +141,10 @@ void amdgpu_ih_ring_fini(struct amdgpu_device *adev, struct amdgpu_ih_ring *ih) if (!ih->ring) return; +#ifdef CONFIG_LOONGARCH + cancel_work_sync(&adev->irq.ih.fix_work); +#endif + if (ih->use_bus_addr) { /* add 8 bytes for the rptr/wptr shadows and @@ -135,6 +161,119 @@ void amdgpu_ih_ring_fini(struct amdgpu_device *adev, struct amdgpu_ih_ring *ih) } } +#ifdef CONFIG_LOONGARCH + +int amdgpu_ih_fix_is_busy(struct amdgpu_device *adev) +{ + return atomic_read(&adev->irq.cs_lock); +} + +static int amdgpu_ih_fix_loongarch_pcie_order_start(struct amdgpu_ih_ring *ih, + u32 rptr, u32 wptr, + bool forever) +{ + int i; + int check_cnt = 0; + u32 ring_end = ih->ring_size >> 2; + + if (rptr == wptr) + return 0; + + rptr = rptr >> 2; + wptr = wptr >> 2; + + wptr = (rptr > wptr) ? ring_end : wptr; + +restart_check: + if (!forever && ++check_cnt > 1) + return -ENAVAIL; + + if (forever) + msleep(20); + + for (i = rptr; i < wptr; i += 1) { + if (le32_to_cpu(ih->ring[i]) == 0xDEADBEFF) + goto restart_check; + } + + if (rptr > wptr) { + for (i = 0; i < wptr; i += 1) { + if (le32_to_cpu(ih->ring[i]) == 0xDEADBEFF) + goto restart_check; + } + } + + return 0; +} + +static int amdgpu_ih_fix_loongarch_pcie_order_end(struct amdgpu_ih_ring *ih, + u32 rptr, u32 wptr) +{ + int i; + u32 ring_end = ih->ring_size >> 2; + + if (rptr == wptr) + return 0; + + rptr = rptr >> 2; + wptr = wptr >> 2; + + wptr = (rptr > wptr) ? ring_end : wptr; + + for (i = rptr; i < wptr; i += 1) + ih->ring[i] = 0xDEADBEFF; + + if (rptr > wptr) { + for (i = 0; i < wptr; i += 1) + ih->ring[i] = 0xDEADBEFF; + } + /* memory barrier for writing into ih ring */ + mb(); + return 0; +} + +static void amdgpu_ih_handle_fix_work(struct work_struct *work) +{ + struct amdgpu_device *adev = + container_of(work, struct amdgpu_device, irq.ih.fix_work); + struct amdgpu_ih_ring *ih = &adev->irq.ih; + struct amdgpu_iv_entry entry; + + u32 wptr; + u32 old_rptr; + int restart_fg = 0; + +restart: + + wptr = amdgpu_ih_get_wptr(adev, ih); + /* Order reading of wptr vs. reading of IH ring data */ + rmb(); + + old_rptr = ih->rptr; + amdgpu_ih_fix_loongarch_pcie_order_start(&adev->irq.ih, old_rptr, wptr, true); + + while (adev->irq.ih.rptr != wptr) { + u32 ring_index = adev->irq.ih.rptr >> 2; + + amdgpu_irq_dispatch(adev, ih); + ih->rptr &= ih->ptr_mask; + } + + amdgpu_ih_fix_loongarch_pcie_order_end(&adev->irq.ih, old_rptr, adev->irq.ih.rptr); + + amdgpu_ih_set_rptr(adev, ih); + /* memory barrier for setting rptr */ + mb(); + + if (ih->rptr != amdgpu_ih_get_wptr(adev, ih)) { + restart_fg = 1; + goto restart; + } + + atomic_set(&adev->irq.cs_lock, 0); +} +#endif + /** * amdgpu_ih_ring_write - write IV to the ring buffer * @@ -209,6 +348,10 @@ int amdgpu_ih_process(struct amdgpu_device *adev, struct amdgpu_ih_ring *ih) { unsigned int count; u32 wptr; +#ifdef CONFIG_LOONGARCH + u32 old_rptr; + int r; +#endif if (!ih->enabled || adev->shutdown) return IRQ_NONE; @@ -222,11 +365,28 @@ int amdgpu_ih_process(struct amdgpu_device *adev, struct amdgpu_ih_ring *ih) /* Order reading of wptr vs. reading of IH ring data */ rmb(); +#ifdef CONFIG_LOONGARCH + old_rptr = adev->irq.ih.rptr; + r = amdgpu_ih_fix_loongarch_pcie_order_start(&adev->irq.ih, old_rptr, wptr, false); + if (r) { + if (old_rptr == ((wptr + 16) & adev->irq.ih.ptr_mask)) + return IRQ_NONE; + + atomic_xchg(&adev->irq.cs_lock, 1); + schedule_work(&adev->irq.ih.fix_work); + return IRQ_NONE; + } +#endif + while (ih->rptr != wptr && --count) { amdgpu_irq_dispatch(adev, ih); ih->rptr &= ih->ptr_mask; } +#ifdef CONFIG_LOONGARCH + amdgpu_ih_fix_loongarch_pcie_order_end(&adev->irq.ih, old_rptr, adev->irq.ih.rptr); +#endif + amdgpu_ih_set_rptr(adev, ih); wake_up_all(&ih->wait_process); diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ih.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_ih.h index 508f02eb0cf8..375afd059cc5 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ih.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ih.h @@ -72,6 +72,9 @@ struct amdgpu_ih_ring { /* For waiting on IH processing at checkpoint. */ wait_queue_head_t wait_process; uint64_t processed_timestamp; +#ifdef CONFIG_LOONGARCH + struct work_struct fix_work; +#endif }; /* return true if time stamp t2 is after t1 with 48bit wrap around */ @@ -110,4 +113,7 @@ void amdgpu_ih_decode_iv_helper(struct amdgpu_device *adev, struct amdgpu_iv_entry *entry); uint64_t amdgpu_ih_decode_iv_ts_helper(struct amdgpu_ih_ring *ih, u32 rptr, signed int offset); +#ifdef CONFIG_LOONGARCH +int amdgpu_ih_fix_is_busy(struct amdgpu_device *adev); +#endif #endif diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c index 5978edf7ea71..1aaf3f91b148 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c @@ -275,6 +275,10 @@ int amdgpu_irq_init(struct amdgpu_device *adev) spin_lock_init(&adev->irq.lock); +#ifdef CONFIG_LOONGARCH + atomic_set(&adev->irq.cs_lock, 0); +#endif + /* Enable MSI if not disabled by module parameter */ adev->irq.msi_enabled = false; diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.h index 04c0b4fa17a4..3cf74a4b4c35 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.h @@ -100,6 +100,9 @@ struct amdgpu_irq { uint32_t srbm_soft_reset; u32 retry_cam_doorbell_index; bool retry_cam_enabled; +#ifdef CONFIG_LOONGARCH + atomic_t cs_lock; +#endif }; enum interrupt_node_id_per_aid { -- 2.33.0
From: lvjianmin <lvjianmin@loongson.cn> LoongArch inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/IC1M5U CVE: NA -------------------------------- Ths first EOP packet with a sequence number as seq-1 seems to confuse some PCIe hardware (e.g. Loongson 7A PCHs). Use the real sequence number instead. Change-Id: I58a07771158df536e8aaedb6dab9b9c29c28f08a Fixes: a9c73a0e022c ("drm/radeon: workaround for CP HW bug on CIK") Link: https://lore.kernel.org/all/73597116d4f004c5f75cf4f13da1af405ea8da8b.camel@i... Signed-off-by: Icenowy Zheng <uwu@icenowy.me> Signed-off-by: lvjianmin <lvjianmin@loongson.cn> Signed-off-by: Hongchen Zhang <zhanghongchen@loongson.cn> --- drivers/gpu/drm/radeon/cik.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/gpu/drm/radeon/cik.c b/drivers/gpu/drm/radeon/cik.c index c2d6b723aea8..b36515c5cf5e 100644 --- a/drivers/gpu/drm/radeon/cik.c +++ b/drivers/gpu/drm/radeon/cik.c @@ -3554,7 +3554,11 @@ void cik_fence_gfx_ring_emit(struct radeon_device *rdev, radeon_ring_write(ring, addr & 0xfffffffc); radeon_ring_write(ring, (upper_32_bits(addr) & 0xffff) | DATA_SEL(1) | INT_SEL(0)); +#ifdef CONFIG_LOONGARCH + radeon_ring_write(ring, fence->seq); +#else radeon_ring_write(ring, fence->seq - 1); +#endif radeon_ring_write(ring, 0); /* Then send the real EOP event down the pipe. */ -- 2.33.0
From: lvjianmin <lvjianmin@loongson.cn> LoongArch inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/IC1M5U CVE: NA -------------------------------- The duplication of EOP packets for GFX7/8, with the former one have seq-1 written and the latter one have seq written, seems to confuse some hardware platform (e.g. Loongson 7A series PCIe controllers). Make the content of the duplicated EOP packet the same with the real one, only masking any possible interrupts. Change-Id: I6e6bb2847e3e154cbbb8158d7f6630d1f76c12d1 Fixes: bf26da927a1c ("drm/amdgpu: add cache flush workaround to gfx8 emit_fence") Fixes: a2e73f56fa62 ("drm/amdgpu: Add support for CIK parts") Link: https://lore.kernel.org/all/20240617105846.1516006-3-uwu@icenowy.me/ Signed-off-by: Icenowy Zheng <uwu@icenowy.me> Signed-off-by: lvjianmin <lvjianmin@loongson.cn> Signed-off-by: Hongchen Zhang <zhanghongchen@loongson.cn> --- drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c | 6 ++++++ drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c | 6 ++++++ 2 files changed, 12 insertions(+) diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c index 893d349aae07..7deef04e6adb 100644 --- a/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c @@ -2127,11 +2127,17 @@ static void gfx_v7_0_ring_emit_fence_gfx(struct amdgpu_ring *ring, u64 addr, EVENT_INDEX(5))); amdgpu_ring_write(ring, addr & 0xfffffffc); amdgpu_ring_write(ring, (upper_32_bits(addr) & 0xffff) | +#ifdef CONFIG_LOONGARCH + DATA_SEL(write64bit ? 2 : 1) | INT_SEL(0)); + amdgpu_ring_write(ring, lower_32_bits(seq)); + amdgpu_ring_write(ring, upper_32_bits(seq)); +#else DATA_SEL(1) | INT_SEL(0)); amdgpu_ring_write(ring, lower_32_bits(seq - 1)); amdgpu_ring_write(ring, upper_32_bits(seq - 1)); /* Then send the real EOP event down the pipe. */ +#endif amdgpu_ring_write(ring, PACKET3(PACKET3_EVENT_WRITE_EOP, 4)); amdgpu_ring_write(ring, (EOP_TCL1_ACTION_EN | EOP_TC_ACTION_EN | diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c index 1471eeffd428..b54b8f3eea91 100644 --- a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c @@ -6194,12 +6194,18 @@ static void gfx_v8_0_ring_emit_fence_gfx(struct amdgpu_ring *ring, u64 addr, EVENT_INDEX(5))); amdgpu_ring_write(ring, addr & 0xfffffffc); amdgpu_ring_write(ring, (upper_32_bits(addr) & 0xffff) | +#ifdef CONFIG_LOONGARCH + DATA_SEL(write64bit ? 2 : 1) | INT_SEL(0)); + amdgpu_ring_write(ring, lower_32_bits(seq)); + amdgpu_ring_write(ring, upper_32_bits(seq)); +#else DATA_SEL(1) | INT_SEL(0)); amdgpu_ring_write(ring, lower_32_bits(seq - 1)); amdgpu_ring_write(ring, upper_32_bits(seq - 1)); /* Then send the real EOP event down the pipe: * EVENT_WRITE_EOP - flush caches, send int */ +#endif amdgpu_ring_write(ring, PACKET3(PACKET3_EVENT_WRITE_EOP, 4)); amdgpu_ring_write(ring, (EOP_TCL1_ACTION_EN | EOP_TC_ACTION_EN | -- 2.33.0
From: Tianrui Zhao <zhaotianrui@loongson.cn> LoongArch inclusion category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/IC1M5U CVE: NA -------------------------------- Signed-off-by: Tianrui Zhao <zhaotianrui@loongson.cn> Change-Id: If7d1b6049907abe1a2ab99049ccd28042958a541 Signed-off-by: Hongchen Zhang <zhanghongchen@loongson.cn> --- drivers/gpu/drm/amd/amdgpu/gfx_v6_0.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v6_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v6_0.c index 34f9211b2679..d5cf46c9a510 100644 --- a/drivers/gpu/drm/amd/amdgpu/gfx_v6_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gfx_v6_0.c @@ -1818,6 +1818,17 @@ static void gfx_v6_0_ring_emit_fence(struct amdgpu_ring *ring, u64 addr, amdgpu_ring_write(ring, 0xFFFFFFFF); amdgpu_ring_write(ring, 0); amdgpu_ring_write(ring, 10); /* poll interval */ +#ifdef CONFIG_LOONGARCH + /* EVENT_WRITE_EOP - flush caches, no send int */ + amdgpu_ring_write(ring, PACKET3(PACKET3_EVENT_WRITE_EOP, 4)); + amdgpu_ring_write(ring, EVENT_TYPE(CACHE_FLUSH_AND_INV_TS_EVENT) | EVENT_INDEX(5)); + amdgpu_ring_write(ring, addr & 0xfffffffc); + amdgpu_ring_write(ring, (upper_32_bits(addr) & 0xffff) | + ((write64bit ? 2 : 1) << CP_EOP_DONE_DATA_CNTL__DATA_SEL__SHIFT) | + (0 << CP_EOP_DONE_DATA_CNTL__INT_SEL__SHIFT)); + amdgpu_ring_write(ring, lower_32_bits(seq)); + amdgpu_ring_write(ring, upper_32_bits(seq)); +#endif /* EVENT_WRITE_EOP - flush caches, send int */ amdgpu_ring_write(ring, PACKET3(PACKET3_EVENT_WRITE_EOP, 4)); amdgpu_ring_write(ring, EVENT_TYPE(CACHE_FLUSH_AND_INV_TS_EVENT) | EVENT_INDEX(5)); @@ -3469,7 +3480,11 @@ static const struct amdgpu_ring_funcs gfx_v6_0_ring_funcs_gfx = { .set_wptr = gfx_v6_0_ring_set_wptr_gfx, .emit_frame_size = 5 + 5 + /* hdp flush / invalidate */ +#ifdef CONFIG_LOONGARCH + 20 + 20 + 20 + /* gfx_v6_0_ring_emit_fence x3 for user fence, vm fence */ +#else 14 + 14 + 14 + /* gfx_v6_0_ring_emit_fence x3 for user fence, vm fence */ +#endif 7 + 4 + /* gfx_v6_0_ring_emit_pipeline_sync */ SI_FLUSH_GPU_TLB_NUM_WREG * 5 + 7 + 6 + /* gfx_v6_0_ring_emit_vm_flush */ 3 + 2 + /* gfx_v6_ring_emit_cntxcntl including vgt flush */ @@ -3498,7 +3513,11 @@ static const struct amdgpu_ring_funcs gfx_v6_0_ring_funcs_compute = { 5 + 5 + /* hdp flush / invalidate */ 7 + /* gfx_v6_0_ring_emit_pipeline_sync */ SI_FLUSH_GPU_TLB_NUM_WREG * 5 + 7 + /* gfx_v6_0_ring_emit_vm_flush */ +#ifdef CONFIG_LOONGARCH + 20 + 20 + 20 + /* gfx_v6_0_ring_emit_fence x3 for user fence, vm fence */ +#else 14 + 14 + 14 + /* gfx_v6_0_ring_emit_fence x3 for user fence, vm fence */ +#endif 5, /* SURFACE_SYNC */ .emit_ib_size = 6, /* gfx_v6_0_ring_emit_ib */ .emit_ib = gfx_v6_0_ring_emit_ib, -- 2.33.0
From: Tianrui Zhao <zhaotianrui@loongson.cn> LoongArch inclusion category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/IC1M5U CVE: NA -------------------------------- Signed-off-by: Tianrui Zhao <zhaotianrui@loongson.cn> Change-Id: I7a86ececa8c12e19e7e388efe0e89905b3a7b9e1 Signed-off-by: Hongchen Zhang <zhanghongchen@loongson.cn> --- drivers/gpu/drm/amd/amdgpu/amdgpu_ih.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ih.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ih.c index ba40ed9e2b48..0cad8a113c1c 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ih.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ih.c @@ -192,13 +192,13 @@ static int amdgpu_ih_fix_loongarch_pcie_order_start(struct amdgpu_ih_ring *ih, msleep(20); for (i = rptr; i < wptr; i += 1) { - if (le32_to_cpu(ih->ring[i]) == 0xDEADBEFF) + if (le32_to_cpu(ih->ring[i]) == 0xDEADBEFF && (i % 4) != 3) goto restart_check; } if (rptr > wptr) { for (i = 0; i < wptr; i += 1) { - if (le32_to_cpu(ih->ring[i]) == 0xDEADBEFF) + if (le32_to_cpu(ih->ring[i]) == 0xDEADBEFF && (i % 4) != 3) goto restart_check; } } @@ -369,7 +369,8 @@ int amdgpu_ih_process(struct amdgpu_device *adev, struct amdgpu_ih_ring *ih) old_rptr = adev->irq.ih.rptr; r = amdgpu_ih_fix_loongarch_pcie_order_start(&adev->irq.ih, old_rptr, wptr, false); if (r) { - if (old_rptr == ((wptr + 16) & adev->irq.ih.ptr_mask)) + if (old_rptr == ((wptr + 16) & adev->irq.ih.ptr_mask) || + old_rptr == ((wptr + 32) & adev->irq.ih.ptr_mask)) return IRQ_NONE; atomic_xchg(&adev->irq.cs_lock, 1); -- 2.33.0
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