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Searched refs:ring_size (Results 1 – 25 of 249) sorted by relevance

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/linux-6.15/tools/virtio/ringtest/
H A Dvirtio_ring_0_9.c75 memset(p, 0, vring_size(ring_size, 0x1000)); in alloc_ring()
76 vring_init(&ring, ring_size, p, 0x1000); in alloc_ring()
85 for (i = 0; i < ring_size - 1; i++) in alloc_ring()
89 guest.num_free = ring_size; in alloc_ring()
90 data = malloc(ring_size * sizeof *data); in alloc_ring()
95 memset(data, 0, ring_size * sizeof *data); in alloc_ring()
136 ring.avail->ring[avail & (ring_size - 1)] = in add_inbuf()
165 index &= ring_size - 1; in get_buf()
283 used_idx &= ring_size - 1; in use_buf()
284 desc = &ring.desc[head & (ring_size - 1)]; in use_buf()
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H A Dring.c82 ret = posix_memalign((void **)&ring, 0x1000, ring_size * sizeof *ring); in alloc_ring()
97 for (i = 0; i < ring_size; ++i) { in alloc_ring()
103 guest.num_free = ring_size; in alloc_ring()
104 data = calloc(ring_size, sizeof(*data)); in alloc_ring()
120 head = (ring_size - 1) & (guest.avail_idx++); in add_inbuf()
145 unsigned head = (ring_size - 1) & guest.last_used_idx; in get_buf()
154 index = ring[head].index & (ring_size - 1); in get_buf()
166 unsigned head = (ring_size - 1) & guest.last_used_idx; in used_empty()
221 unsigned head = (ring_size - 1) & host.used_idx; in avail_empty()
228 unsigned head = (ring_size - 1) & host.used_idx; in use_buf()
H A Dmain.c29 unsigned ring_size = 256; variable
288 ring_size, in help()
322 ring_size = strtol(optarg, &endptr, 0); in main()
323 assert(ring_size && !(ring_size & (ring_size - 1))); in main()
/linux-6.15/include/xen/interface/io/
H A Dring.h357 static inline RING_IDX name##_mask(RING_IDX idx, RING_IDX ring_size) \
359 return idx & (ring_size - 1); \
364 RING_IDX ring_size) \
366 return buf + name##_mask(idx, ring_size); \
374 RING_IDX ring_size) \
377 size <= ring_size - *masked_cons) { \
380 memcpy(opaque, buf + *masked_cons, ring_size - *masked_cons); \
381 memcpy((unsigned char *)opaque + ring_size - *masked_cons, buf, \
382 size - (ring_size - *masked_cons)); \
384 *masked_cons = name##_mask(*masked_cons + size, ring_size); \
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/linux-6.15/drivers/gpu/drm/amd/amdgpu/
H A Damdgpu_ih.c42 unsigned ring_size, bool use_bus_addr) in amdgpu_ih_ring_init() argument
48 rb_bufsz = order_base_2(ring_size / 4); in amdgpu_ih_ring_init()
49 ring_size = (1 << rb_bufsz) * 4; in amdgpu_ih_ring_init()
50 ih->ring_size = ring_size; in amdgpu_ih_ring_init()
51 ih->ptr_mask = ih->ring_size - 1; in amdgpu_ih_ring_init()
64 ih->ring = dma_alloc_coherent(adev->dev, ih->ring_size + 8, in amdgpu_ih_ring_init()
70 ih->wptr_addr = dma_addr + ih->ring_size; in amdgpu_ih_ring_init()
71 ih->wptr_cpu = &ih->ring[ih->ring_size / 4]; in amdgpu_ih_ring_init()
72 ih->rptr_addr = dma_addr + ih->ring_size + 4; in amdgpu_ih_ring_init()
73 ih->rptr_cpu = &ih->ring[(ih->ring_size / 4) + 1]; in amdgpu_ih_ring_init()
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H A Dnavi10_ih.c53 if (adev->irq.ih.ring_size) { in navi10_ih_init_register_offset()
66 if (adev->irq.ih1.ring_size) { in navi10_ih_init_register_offset()
77 if (adev->irq.ih2.ring_size) { in navi10_ih_init_register_offset()
203 if (ih[i]->ring_size) { in navi10_ih_toggle_interrupts()
215 int rb_bufsz = order_base_2(ih->ring_size / 4); in navi10_ih_rb_cntl()
353 if (ih[i]->ring_size) { in navi10_ih_irq_init()
373 if (adev->irq.ih_soft.ring_size) in navi10_ih_irq_init()
473 if ((v < ih->ring_size) && (v != ih->rptr)) in navi10_ih_irq_rearm()
580 adev->irq.ih1.ring_size = 0; in navi10_ih_sw_init()
581 adev->irq.ih2.ring_size = 0; in navi10_ih_sw_init()
H A Damdgpu_ring.c341 ring->ring_size = roundup_pow_of_two(max_dw * 4 * sched_hw_submission); in amdgpu_ring_init()
343 ring->ring_size = roundup_pow_of_two(max_dw * 4); in amdgpu_ring_init()
344 ring->count_dw = (ring->ring_size - 4) >> 2; in amdgpu_ring_init()
349 ring->buf_mask = (ring->ring_size / 4) - 1; in amdgpu_ring_init()
359 BUG_ON(ring->ring_size > PAGE_SIZE*4); in amdgpu_ring_init()
368 r = amdgpu_bo_create_kernel(adev, ring->ring_size + ring->funcs->extra_dw, PAGE_SIZE, in amdgpu_ring_init()
536 if (*pos >= (ring->ring_size + 12)) in amdgpu_debugfs_ring_read()
553 size = ring->ring_size - (early[0] - early[1]); in amdgpu_debugfs_ring_read()
655 ring->ring_size + 12); in amdgpu_debugfs_ring_init()
659 ring->ring_size + 12); in amdgpu_debugfs_ring_init()
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H A Dvega10_ih.c51 if (adev->irq.ih.ring_size) { in vega10_ih_init_register_offset()
64 if (adev->irq.ih1.ring_size) { in vega10_ih_init_register_offset()
75 if (adev->irq.ih2.ring_size) { in vega10_ih_init_register_offset()
148 if (ih[i]->ring_size) { in vega10_ih_toggle_interrupts()
160 int rb_bufsz = order_base_2(ih->ring_size / 4); in vega10_ih_rb_cntl()
285 if (ih[i]->ring_size) { in vega10_ih_irq_init()
303 if (adev->irq.ih_soft.ring_size) in vega10_ih_irq_init()
403 if ((v < ih->ring_size) && (v != ih->rptr)) in vega10_ih_irq_rearm()
H A Dvega20_ih.c59 if (adev->irq.ih.ring_size) { in vega20_ih_init_register_offset()
72 if (adev->irq.ih1.ring_size) { in vega20_ih_init_register_offset()
83 if (adev->irq.ih2.ring_size) { in vega20_ih_init_register_offset()
184 if (ih[i]->ring_size) { in vega20_ih_toggle_interrupts()
196 int rb_bufsz = order_base_2(ih->ring_size / 4); in vega20_ih_rb_cntl()
348 if (ih[i]->ring_size) { in vega20_ih_irq_init()
383 if (adev->irq.ih_soft.ring_size) in vega20_ih_irq_init()
484 if ((v < ih->ring_size) && (v != ih->rptr)) in vega20_ih_irq_rearm()
/linux-6.15/tools/testing/selftests/kvm/
H A Dcoalesced_io_test.c17 uint32_t ring_size; member
47 for (i = 0; i < io->ring_size - 1; i++) { in guest_code()
97 *(uint64_t *)run->mmio.data == io->mmio_gpa + io->ring_size - 1)) || in vcpu_run_and_verify_io_exit()
100 pio_value == io->pio_port + io->ring_size - 1)), in vcpu_run_and_verify_io_exit()
106 (want_pio ? io->pio_port : io->mmio_gpa) + io->ring_size - 1, run->exit_reason, in vcpu_run_and_verify_io_exit()
122 TEST_ASSERT((ring->last + 1) % io->ring_size == ring->first, in vcpu_run_and_verify_coalesced_io()
124 ring->first, ring->last, io->ring_size, ring_start); in vcpu_run_and_verify_coalesced_io()
126 for (i = 0; i < io->ring_size - 1; i++) { in vcpu_run_and_verify_coalesced_io()
127 uint32_t idx = (ring->first + i) % io->ring_size; in vcpu_run_and_verify_coalesced_io()
214 .ring_size = (getpagesize() - sizeof(struct kvm_coalesced_mmio_ring)) / in main()
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/linux-6.15/drivers/crypto/ccp/
H A Dtee-dev.c25 static int tee_alloc_ring(struct psp_tee_device *tee, int ring_size) in tee_alloc_ring() argument
30 if (!ring_size) in tee_alloc_ring()
36 start_addr = (void *)__get_free_pages(GFP_KERNEL, get_order(ring_size)); in tee_alloc_ring()
40 memset(start_addr, 0x0, ring_size); in tee_alloc_ring()
42 rb_mgr->ring_size = ring_size; in tee_alloc_ring()
57 get_order(rb_mgr->ring_size)); in tee_free_ring()
60 rb_mgr->ring_size = 0; in tee_free_ring()
76 cmd->size = tee->rb_mgr.ring_size; in tee_alloc_cmd_buffer()
91 int ring_size = MAX_RING_BUFFER_ENTRIES * sizeof(struct tee_ring_cmd); in tee_init_ring() local
98 ret = tee_alloc_ring(tee, ring_size); in tee_init_ring()
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/linux-6.15/drivers/net/ethernet/intel/idpf/
H A Didpf_controlq.c65 for (i = 0; i < cq->ring_size; i++) { in idpf_ctlq_init_rxq_bufs()
105 cq->ring_size = 0; in idpf_ctlq_shutdown()
138 cq->ring_size = qinfo->len; in idpf_ctlq_add()
364 if (*clean_count > cq->ring_size) in idpf_ctlq_clean_sq()
394 if (ntc == cq->ring_size) in idpf_ctlq_clean_sq()
432 if (*buff_count > cq->ring_size) in idpf_ctlq_post_rx_buffs()
440 if (tbp >= cq->ring_size) in idpf_ctlq_post_rx_buffs()
462 if (tbp >= cq->ring_size) in idpf_ctlq_post_rx_buffs()
479 if (tbp >= cq->ring_size) in idpf_ctlq_post_rx_buffs()
506 if (ntp == cq->ring_size) in idpf_ctlq_post_rx_buffs()
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H A Didpf_controlq_setup.c14 size_t size = cq->ring_size * sizeof(struct idpf_ctlq_desc); in idpf_ctlq_alloc_desc_ring()
43 cq->bi.rx_buff = kcalloc(cq->ring_size, sizeof(struct idpf_dma_mem *), in idpf_ctlq_alloc_bufs()
49 for (i = 0; i < cq->ring_size - 1; i++) { in idpf_ctlq_alloc_bufs()
112 for (i = 0; i < cq->ring_size; i++) { in idpf_ctlq_free_bufs()
/linux-6.15/drivers/gpu/drm/radeon/
H A Dradeon_ring.c88 ring->ring_free_dw = rptr + (ring->ring_size / 4); in radeon_ring_free_size()
93 ring->ring_free_dw = ring->ring_size / 4; in radeon_ring_free_size()
114 if (ndw > (ring->ring_size / 4)) in radeon_ring_alloc()
316 size = ring->wptr + (ring->ring_size / 4); in radeon_ring_backup()
383 int radeon_ring_init(struct radeon_device *rdev, struct radeon_ring *ring, unsigned ring_size, in radeon_ring_init() argument
388 ring->ring_size = ring_size; in radeon_ring_init()
394 r = radeon_bo_create(rdev, ring->ring_size, PAGE_SIZE, true, in radeon_ring_init()
420 ring->ptr_mask = (ring->ring_size / 4) - 1; in radeon_ring_init()
421 ring->ring_free_dw = ring->ring_size / 4; in radeon_ring_init()
476 count = (ring->ring_size / 4) - ring->ring_free_dw; in radeon_debugfs_ring_info_show()
/linux-6.15/drivers/xen/
H A Devtchn.c67 unsigned int ring_size; member
99 return idx & (u->ring_size - 1); in evtchn_ring_offset()
183 if ((prod - cons) < u->ring_size) { in evtchn_interrupt()
240 if (((c ^ p) & u->ring_size) != 0) { in evtchn_read()
241 bytes1 = (u->ring_size - evtchn_ring_offset(u, c)) * in evtchn_read()
327 if (u->nr_evtchns <= u->ring_size) in evtchn_resize_ring()
330 if (u->ring_size == 0) in evtchn_resize_ring()
333 new_size = 2 * u->ring_size; in evtchn_resize_ring()
360 memcpy(new_ring + u->ring_size, old_ring, in evtchn_resize_ring()
361 u->ring_size * sizeof(*u->ring)); in evtchn_resize_ring()
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/linux-6.15/drivers/net/ethernet/amazon/ena/
H A Dena_netdev.h88 #define ENA_TX_RING_IDX_NEXT(idx, ring_size) (((idx) + 1) & ((ring_size) - 1)) argument
90 #define ENA_RX_RING_IDX_NEXT(idx, ring_size) (((idx) + 1) & ((ring_size) - 1)) argument
91 #define ENA_RX_RING_IDX_ADD(idx, n, ring_size) \ argument
92 (((idx) + (n)) & ((ring_size) - 1))
265 int ring_size; member
/linux-6.15/drivers/net/ethernet/renesas/
H A Drswitch.c222 if (index + num >= gq->ring_size) in rswitch_next_queue_index()
223 index = (index + num) % gq->ring_size; in rswitch_next_queue_index()
255 index = (i + start_index) % gq->ring_size; in rswitch_gwca_queue_alloc_rx_buf()
286 for (i = 0; i < gq->ring_size; i++) in rswitch_gwca_queue_free()
320 gq->ring_size = ring_size; in rswitch_gwca_queue_alloc()
378 unsigned int ring_size = sizeof(struct rswitch_ext_desc) * gq->ring_size; in rswitch_gwca_queue_format() local
384 memset(gq->tx_ring, 0, ring_size); in rswitch_gwca_queue_format()
491 unsigned int ring_size = sizeof(struct rswitch_ext_ts_desc) * gq->ring_size; in rswitch_gwca_queue_ext_ts_format() local
496 memset(gq->rx_ring, 0, ring_size); in rswitch_gwca_queue_ext_ts_format()
548 gq->ring_size = TS_RING_SIZE; in rswitch_gwca_ts_queue_alloc()
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/linux-6.15/tools/testing/selftests/drivers/net/hw/
H A Diou-zcrx.c72 static size_t ring_size; variable
115 ring_size = rq_entries * sizeof(struct io_uring_zcrx_rqe); in get_refill_ring_size()
117 ring_size += PAGE_SIZE; in get_refill_ring_size()
118 return ALIGN_UP(ring_size, 4096); in get_refill_ring_size()
140 ring_size = get_refill_ring_size(rq_entries); in setup_zcrx()
142 ring_size, in setup_zcrx()
149 .size = ring_size, in setup_zcrx()
/linux-6.15/drivers/crypto/intel/qat/qat_common/
H A Dadf_transport.c93 ADF_MAX_INFLIGHTS(ring->ring_size, ring->msg_size)) { in adf_send_message()
103 ADF_RING_SIZE_MODULO(ring->ring_size)); in adf_send_message()
124 ADF_RING_SIZE_MODULO(ring->ring_size)); in adf_handle_response()
139 u32 ring_config = BUILD_RING_CONFIG(ring->ring_size); in adf_configure_tx_ring()
151 BUILD_RESP_RING_CONFIG(ring->ring_size, in adf_configure_rx_ring()
168 ADF_SIZE_TO_RING_SIZE_IN_BYTES(ring->ring_size); in adf_init_ring()
194 ring->ring_size); in adf_init_ring()
206 ADF_SIZE_TO_RING_SIZE_IN_BYTES(ring->ring_size); in adf_cleanup_ring()
272 ring->ring_size = adf_verify_ring_size(msg_size, num_msgs); in adf_create_ring()
275 max_inflights = ADF_MAX_INFLIGHTS(ring->ring_size, ring->msg_size); in adf_create_ring()
/linux-6.15/drivers/bus/mhi/ep/
H A Dring.c26 ring->rd_offset = (ring->rd_offset + 1) % ring->ring_size; in mhi_ep_ring_inc_index()
55 buf_info.size = (ring->ring_size - start) * sizeof(struct mhi_ring_element); in __mhi_ep_cache_ring()
125 num_free_elem = ((ring->ring_size - ring->rd_offset) + ring->wr_offset) - 1; in mhi_ep_ring_add_element()
183 ring->ring_size = mhi_ep_ring_num_elems(ring); in mhi_ep_ring_start()
204 ring->ring_cache = kcalloc(ring->ring_size, sizeof(struct mhi_ring_element), GFP_KERNEL); in mhi_ep_ring_start()
/linux-6.15/arch/powerpc/platforms/pasemi/
H A Ddma_lib.c242 int pasemi_dma_alloc_ring(struct pasemi_dmachan *chan, int ring_size) in pasemi_dma_alloc_ring() argument
246 chan->ring_size = ring_size; in pasemi_dma_alloc_ring()
249 ring_size * sizeof(u64), in pasemi_dma_alloc_ring()
268 dma_free_coherent(&dma_pdev->dev, chan->ring_size * sizeof(u64), in pasemi_dma_free_ring()
271 chan->ring_size = 0; in pasemi_dma_free_ring()
/linux-6.15/drivers/net/ethernet/atheros/
H A Dag71xx.c774 int ring_mask, ring_size; in ag71xx_tx_packets() local
778 ring_size = BIT(ring->order); in ag71xx_tx_packets()
1153 int ring_size = BIT(ring->order); in ag71xx_ring_tx_init() local
1154 int ring_mask = ring_size - 1; in ag71xx_ring_tx_init()
1157 for (i = 0; i < ring_size; i++) { in ag71xx_ring_tx_init()
1178 int ring_size = BIT(ring->order); in ag71xx_ring_rx_clean() local
1184 for (i = 0; i < ring_size; i++) in ag71xx_ring_rx_clean()
1298 int ring_size, tx_size; in ag71xx_rings_init() local
1328 int ring_size; in ag71xx_rings_free() local
1505 ring_size = BIT(ring->order); in ag71xx_hard_start_xmit()
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/linux-6.15/tools/testing/selftests/bpf/progs/
H A Dtest_ringbuf.c32 long ring_size = 0; variable
72 ring_size = bpf_ringbuf_query(&ringbuf, BPF_RB_RING_SIZE); in test_ringbuf()
/linux-6.15/drivers/net/ethernet/intel/ice/
H A Dice_fwlog.c83 int status, ring_size; in ice_fwlog_realloc_rings() local
94 ring_size = ICE_FWLOG_INDEX_TO_BYTES(index) / ICE_AQ_MAX_BUF_LEN; in ice_fwlog_realloc_rings()
95 if (ring_size == hw->fwlog_ring.size) in ice_fwlog_realloc_rings()
102 ring.rings = kcalloc(ring_size, sizeof(*ring.rings), GFP_KERNEL); in ice_fwlog_realloc_rings()
106 ring.size = ring_size; in ice_fwlog_realloc_rings()
/linux-6.15/Documentation/networking/
H A Diou-zcrx.rst95 void *ring_ptr = mmap(NULL, ring_size,
104 size_t ring_size = rq_entries * sizeof(struct io_uring_zcrx_rqe) + PAGE_SIZE;
106 ring_size = (ring_size + (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
121 .size = ring_size,

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