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/linux/lib/
H A D	kfifo.c	1 // SPDX-License-Identifier: GPL-2.0-or-later 3 * A generic kernel FIFO implementation 8 #include <linux/dma-mapping.h> 18 * internal helper to calculate the unused elements in a fifo 20 static inline unsigned int kfifo_unused(struct __kfifo fifo) in kfifo_unused() 22 return (fifo in kfifo_unused() 19 kfifo_unused(struct __kfifo fifo) kfifo_unused() argument 24 __kfifo_alloc(struct __kfifo * fifo,unsigned int size,size_t esize,gfp_t gfp_mask) __kfifo_alloc() argument 55 __kfifo_free(struct __kfifo * fifo) __kfifo_free() argument 66 __kfifo_init(struct __kfifo * fifo,void * buffer,unsigned int size,size_t esize) __kfifo_init() argument 67 __kfifo_init(struct __kfifo * fifo,void * buffer,unsigned int size,size_t esize) __kfifo_init() argument 89 kfifo_copy_in(struct __kfifo * fifo,const void * src,unsigned int len,unsigned int off) kfifo_copy_in() argument 92 unsigned int size = fifo->mask + 1; kfifo_copy_in() local 113 __kfifo_in(struct __kfifo * fifo,const void * buf,unsigned int len) __kfifo_in() argument 128 kfifo_copy_out(struct __kfifo * fifo,void * dst,unsigned int len,unsigned int off) kfifo_copy_out() argument 131 unsigned int size = fifo->mask + 1; kfifo_copy_out() local 152 __kfifo_out_peek(struct __kfifo * fifo,void * buf,unsigned int len) __kfifo_out_peek() argument 166 __kfifo_out(struct __kfifo * fifo,void * buf,unsigned int len) __kfifo_out() argument 175 kfifo_copy_from_user(struct __kfifo * fifo,const void __user * from,unsigned int len,unsigned int off,unsigned int * copied) kfifo_copy_from_user() argument 179 unsigned int size = fifo->mask + 1; kfifo_copy_from_user() local 210 __kfifo_from_user(struct __kfifo * fifo,const void __user * from,unsigned long len,unsigned int * copied) __kfifo_from_user() argument 236 kfifo_copy_to_user(struct __kfifo * fifo,void __user * to,unsigned int len,unsigned int off,unsigned int * copied) kfifo_copy_to_user() argument 241 unsigned int size = fifo->mask + 1; kfifo_copy_to_user() local 270 __kfifo_to_user(struct __kfifo * fifo,void __user * to,unsigned long len,unsigned int * copied) __kfifo_to_user() argument 334 setup_sgl(struct __kfifo * fifo,struct scatterlist * sgl,int nents,unsigned int len,unsigned int off) setup_sgl() argument 337 unsigned int size = fifo->mask + 1; setup_sgl() local 356 __kfifo_dma_in_prepare(struct __kfifo * fifo,struct scatterlist * sgl,int nents,unsigned int len) __kfifo_dma_in_prepare() argument 369 __kfifo_dma_out_prepare(struct __kfifo * fifo,struct scatterlist * sgl,int nents,unsigned int len) __kfifo_dma_out_prepare() argument 398 __kfifo_peek_n(struct __kfifo * fifo,size_t recsize) __kfifo_peek_n() argument 421 __kfifo_poke_n(struct __kfifo * fifo,unsigned int n,size_t recsize) __kfifo_poke_n() argument 432 __kfifo_len_r(struct __kfifo * fifo,size_t recsize) __kfifo_len_r() argument 438 __kfifo_in_r(struct __kfifo * fifo,const void * buf,unsigned int len,size_t recsize) __kfifo_in_r() argument 452 kfifo_out_copy_r(struct __kfifo * fifo,void * buf,unsigned int len,size_t recsize,unsigned int * n) kfifo_out_copy_r() argument 464 __kfifo_out_peek_r(struct __kfifo * fifo,void * buf,unsigned int len,size_t recsize) __kfifo_out_peek_r() argument 476 __kfifo_out_r(struct __kfifo * fifo,void * buf,unsigned int len,size_t recsize) __kfifo_out_r() argument 490 __kfifo_skip_r(struct __kfifo * fifo,size_t recsize) __kfifo_skip_r() argument 499 __kfifo_from_user_r(struct __kfifo * fifo,const void __user * from,unsigned long len,unsigned int * copied,size_t recsize) __kfifo_from_user_r() argument 523 __kfifo_to_user_r(struct __kfifo * fifo,void __user * to,unsigned long len,unsigned int * copied,size_t recsize) __kfifo_to_user_r() argument 548 __kfifo_dma_in_prepare_r(struct __kfifo * fifo,struct scatterlist * sgl,int nents,unsigned int len,size_t recsize) __kfifo_dma_in_prepare_r() argument 562 __kfifo_dma_in_finish_r(struct __kfifo * fifo,unsigned int len,size_t recsize) __kfifo_dma_in_finish_r() argument 571 __kfifo_dma_out_prepare_r(struct __kfifo * fifo,struct scatterlist * sgl,int nents,unsigned int len,size_t recsize) __kfifo_dma_out_prepare_r() argument 585 __kfifo_dma_out_finish_r(struct __kfifo * fifo,size_t recsize) __kfifo_dma_out_finish_r() argument [all...]
/linux/include/linux/
H A D	kfifo.h	1 /* SPDX-License-Identifier: GPL-2.0-or-later / 3 A generic kernel FIFO implementation 12 * How to porting drivers to the new generic FIFO API: 14 * - Modify the declaration of the "struct kfifo " object into a 15 in-place "struct kfifo" object 16 * - Ini 67 __STRUCT_KFIFO(type,size,recsize,ptrtype) global() argument 73 STRUCT_KFIFO(type,size) global() argument 90 STRUCT_KFIFO_REC_1(size) global() argument 93 STRUCT_KFIFO_REC_2(size) global() argument 107 __is_kfifo_ptr(fifo) global() argument 115 DECLARE_KFIFO_PTR(fifo,type) global() argument 123 DECLARE_KFIFO(fifo,type,size) global() argument 129 INIT_KFIFO(fifo) global() argument 148 DEFINE_KFIFO(fifo,type,size) global() argument 186 kfifo_initialized(fifo) global() argument 192 kfifo_esize(fifo) global() argument 198 kfifo_recsize(fifo) global() argument 204 kfifo_size(fifo) global() argument 214 kfifo_reset(fifo) global() argument 228 kfifo_reset_out(fifo) global() argument 238 kfifo_len(fifo) global() argument 248 kfifo_is_empty(fifo) global() argument 260 kfifo_is_empty_spinlocked(fifo,lock) global() argument 276 kfifo_is_empty_spinlocked_noirqsave(fifo,lock) global() argument 289 kfifo_is_full(fifo) global() argument 299 kfifo_avail(fifo) global() argument 316 kfifo_skip_count(fifo,count) global() argument 330 kfifo_skip(fifo) global() argument 338 kfifo_peek_len(fifo) global() argument 361 kfifo_alloc(fifo,size,gfp_mask) global() argument 376 kfifo_free(fifo) global() argument 395 kfifo_init(fifo,buffer,size) global() argument 416 kfifo_put(fifo,val) global() argument 453 kfifo_get(fifo,val) global() argument 492 kfifo_peek(fifo,val) global() argument 530 kfifo_in(fifo,buf,n) global() argument 552 kfifo_in_spinlocked(fifo,buf,n,lock) global() argument 573 kfifo_in_spinlocked_noirqsave(fifo,buf,n,lock) global() argument 583 kfifo_in_locked(fifo,buf,n,lock) global() argument 598 kfifo_out(fifo,buf,n) global() argument 622 kfifo_out_spinlocked(fifo,buf,n,lock) global() argument 645 kfifo_out_spinlocked_noirqsave(fifo,buf,n,lock) global() argument 657 kfifo_out_locked(fifo,buf,n,lock) global() argument 673 kfifo_from_user(fifo,from,len,copied) global() argument 701 kfifo_to_user(fifo,to,len,copied) global() argument 730 kfifo_dma_in_prepare_mapped(fifo,sgl,nents,len,dma) global() argument 744 kfifo_dma_in_prepare(fifo,sgl,nents,len) global() argument 758 kfifo_dma_in_finish(fifo,len) global() argument 786 kfifo_dma_out_prepare_mapped(fifo,sgl,nents,len,dma) global() argument 800 kfifo_dma_out_prepare(fifo,sgl,nents,len) global() argument 814 kfifo_dma_out_finish(fifo,len) global() argument 831 kfifo_out_peek(fifo,buf,n) global() argument 861 kfifo_out_linear(fifo,tail,n) global() argument 890 kfifo_out_linear_ptr(fifo,ptr,n) global() argument [all...]
H A D	pxa2xx_ssp.h	1 /* SPDX-License-Identifier: GPL-2.0-only / 5 This driver supports the following PXA CPU/SSP ports:- 49 #define SSCR0_DSS GENMASK(3, 0) /* Data Size Select (mask) / 50 #define SSCR0_DataSize(x) ((x) - 1) / Data Size Select [4..16] / 60 #define SSCR0_EDSS BIT(20) / Extended data size select / 62 #define SSCR0_RIM BIT(22) / Receive FIFO overrun interrupt mask / 63 #define SSCR0_TUM BIT(23) / Transmit FIFO underrun interrupt mask / 65 #define SSCR0_SlotsPerFrm(x) (((x) - 1) << 24) / Time slots per frame [1..8] / 66 #define SSCR0_FPCKE BIT(29) / FIFO packing enable / 70 #define SSCR1_RIE BIT(0) / Receive FIFO Interrupt Enable */ [all …]
/linux/drivers/platform/mellanox/
H A D	mlxbf-tmfifo.c	`1 // SPDX-License-Identifier: GPL-2.0+ 24 #include "mlxbf-tmfifo-regs.h" 26 /* Vring size. / 29 / Console Tx buffer size. / 35 / House-keeping timer interval. / 38 / Virtual devices sharing the TM FIFO. / 53 / ACPI UID for BlueField-3. / 59 struct mlxbf_tmfifo_vring - Structure of the TmFifo virtual ring 71 * @num: vring size (number of descriptors) 72 * @align: vring alignment size [all …]`
/linux/drivers/md/bcache/
H A D	util.h	`1 /* SPDX-License-Identifier: GPL-2.0 / 35 size_t size, used; \ 42 (heap)->used = 0; \ 43 (heap)->size = (_size); \ 44 _bytes = (heap)->size sizeof(*(heap)->data); \ 45 (heap)->data = kvmalloc(_bytes, (gfp) & GFP_KERNEL); \ 46 (heap)->data; \ 51 kvfree((heap)->data); \ 52 (heap)->data = NULL; \ 55 #define heap_swap(h, i, j) swap((h)->data[i], (h)->data[j]) [all …]`
/linux/Documentation/devicetree/bindings/powerpc/fsl/
H A D	mpc5121-psc.txt	4 ---------------- 7 are specified by fsl,mpc5121-psc-uart nodes in the 8 fsl,mpc5121-immr SoC node. Additionally the PSC FIFO 9 Controller node fsl,mpc5121-psc-fifo is required there: 11 fsl,mpc512x-psc-uart nodes 12 -------------------------- 15 - compatible : Should contain "fsl,<soc>-psc-uart" and "fsl,<soc>-psc" 17 - reg : Offset and length of the register set for the PSC device 18 - interrupts : <a b> where a is the interrupt number of the 19 PSC FIFO Controller and b is a field that represents an [all …]
/linux/drivers/net/ethernet/intel/fm10k/
H A D	fm10k_mbx.c	1 // SPDX-License-Identifier: GPL-2.0 2 /* Copyright(c) 2013 - 2019 Intel Corporation. / 7 fm10k_fifo_init - Initialize a message FIFO 8 * @fifo: pointer to FIFO 9 * @buffer: pointer to memory to be used to store FIFO 10 * @size: maximum message size to store in FIFO, must be 2^n - 1 12 static void fm10k_fifo_init(struct fm10k_mbx_fifo fifo, u32 buffer, u16 size) in fm10k_fifo_init() argument 14 fifo->buffer = buffer; in fm10k_fifo_init() 15 fifo->size = size; in fm10k_fifo_init() 16 fifo->head = 0; in fm10k_fifo_init() [all …]
/linux/sound/soc/meson/
H A D	aiu-fifo.c	1 // SPDX-License-Identifier: GPL-2.0 8 #include <linux/dma-mapping.h> 11 #include <sound/soc-dai.h> 13 #include "aiu-fifo.h" 37 struct aiu_fifo fifo = snd_soc_dai_dma_data_get_playback(dai); in aiu_fifo_pointer() local 38 struct snd_pcm_runtime runtime = substream->runtime; in aiu_fifo_pointer() 41 addr = snd_soc_component_read(component, fifo->mem_offset + AIU_MEM_RD); in aiu_fifo_pointer() 43 return bytes_to_frames(runtime, addr - (unsigned int)runtime->dma_addr); in aiu_fifo_pointer() 48 struct snd_soc_component component = dai->component; in aiu_fifo_enable() 49 struct aiu_fifo fifo = snd_soc_dai_dma_data_get_playback(dai); in aiu_fifo_enable() local [all …]
H A D	axg-fifo.c	1 // SPDX-License-Identifier: (GPL-2.0 OR MIT) 15 #include <sound/soc-dai.h> 17 #include "axg-fifo.h" 21 * capture frontend DAI. The logic behind this two types of fifo is very 65 return dai->dev; in axg_fifo_dev() 68 static void __dma_enable(struct axg_fifo fifo, bool enable) in __dma_enable() argument 70 regmap_update_bits(fifo->map, FIFO_CTRL0, CTRL0_DMA_EN, in __dma_enable() 77 struct axg_fifo fifo = axg_fifo_data(ss); in axg_fifo_pcm_trigger() local 83 __dma_enable(fifo, true); in axg_fifo_pcm_trigger() 88 __dma_enable(fifo, false); in axg_fifo_pcm_trigger() [all …]
/linux/Documentation/devicetree/bindings/net/
H A D	ibm,emac.txt	8 correct clock-frequency property. 13 - device_type : "network" 15 - compatible : compatible list, contains 2 entries, first is 16 "ibm,emac-CHIP" where CHIP is the host ASIC (440gx, 18 "ibm,emac4". For Axon, thus, we have: "ibm,emac-axon", 20 - interrupts : <interrupt mapping for EMAC IRQ and WOL IRQ> 21 - reg : <registers mapping> 22 - local-mac-address : 6 bytes, MAC address 23 - mal-device : phandle of the associated McMAL node 24 - mal-tx-channel : 1 cell, index of the tx channel on McMAL associated [all …]
/linux/arch/powerpc/boot/dts/
H A D	mpc5121.dtsi	`1 // SPDX-License-Identifier: GPL-2.0-or-later 5 * Copyright 2007-2008 Freescale Semiconductor Inc. 8 #include <dt-bindings/clock/mpc512x-clock.h> 10 /dts-v1/; 15 #address-cells = <1>; 16 #size-cells = <1>; 17 interrupt-parent = <&ipic>; 25 #address-cells = <1>; 26 #size-cells = <0>; 31 d-cache-line-size = <0x20>; /* 32 bytes */ [all …]`
H A D	eiger.dts	`11 /dts-v1/; 14 #address-cells = <2>; 15 #size-cells = <1>; 18 dcr-parent = <&{/cpus/cpu@0}>; 30 #address-cells = <1>; 31 #size-cells = <0>; 37 clock-frequency = <0>; /* Filled in by U-Boot / 38 timebase-frequency = <0>; / Filled in by U-Boot */ 39 i-cache-line-size = <32>; 40 d-cache-line-size = <32>; [all …]`
H A D	arches.dts	`1 // SPDX-License-Identifier: GPL-2.0-or-later 17 /dts-v1/; 20 #address-cells = <2>; 21 #size-cells = <1>; 24 dcr-parent = <&{/cpus/cpu@0}>; 34 #address-cells = <1>; 35 #size-cells = <0>; 41 clock-frequency = <0>; /* Filled in by U-Boot / 42 timebase-frequency = <0>; / Filled in by U-Boot */ 43 i-cache-line-size = <32>; [all …]`
/linux/drivers/gpu/drm/nouveau/nvkm/subdev/gsp/rm/r535/
H A D	fifo.c	22 #include <engine/fifo/priv.h> 23 #include <engine/fifo/cgrp.h> 24 #include <engine/fifo/chan.h> 25 #include <engine/fifo/chid.h> 26 #include <engine/fifo/runl.h> 38 #include "nvrm/fifo.h" 44 struct nvkm_gsp gsp = chan->rm.object.client->gsp; in r535_chan_doorbell_handle() 46 return gsp->rm->gpu->fifo.chan.doorbell_handle(chan); in r535_chan_doorbell_handle() 62 struct nvkm_fifo fifo = chan->cgrp->runl->fifo; in r535_chan_ramfc_clear() local 64 nvkm_gsp_rm_free(&chan->rm.object); in r535_chan_ramfc_clear() [all …]
/linux/drivers/net/wireless/realtek/rtw88/
H A D	mac.c	1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause 2 /* Copyright(c) 2018-2019 Realtek Corporation 94 return -ETIMEDOUT; in rtw_mac_pre_system_cfg() 107 return -EINVAL; in rtw_mac_pre_system_cfg() 156 if (cmd->base == RTW_PWR_ADDR_SDIO) in rtw_pwr_cmd_polling() 157 offset = cmd->offset \| SDIO_LOCAL_OFFSET; in rtw_pwr_cmd_polling() 159 offset = cmd->offset; in rtw_pwr_cmd_polling() 161 if (do_pwr_poll_cmd(rtwdev, offset, cmd->mask, cmd->value)) in rtw_pwr_cmd_polling() 169 if (rtwdev->chip->id == RTW_CHIP_TYPE_8723D) in rtw_pwr_cmd_polling() 173 if (rtwdev->chip->id == RTW_CHIP_TYPE_8723D) in rtw_pwr_cmd_polling() [all …]
/linux/samples/kfifo/
H A D	dma-example.c	1 // SPDX-License-Identifier: GPL-2.0-only 3 * Sample fifo dma implementation 12 #include <linux/dma-mapping.h> 15 * This module shows how to handle fifo dma operations. 18 /* fifo size in elements (bytes) */ 21 static struct kfifo fifo; variable 30 printk(KERN_INFO "DMA fifo test start\n"); in example_init() 32 if (kfifo_alloc(&fifo, FIFO_SIZE, GFP_KERNEL)) { in example_init() 34 return -ENOMEM; in example_init() 37 printk(KERN_INFO "queue size: %u\n", kfifo_size(&fifo)); in example_init() [all …]
H A D	record-example.c	1 // SPDX-License-Identifier: GPL-2.0-only 3 * Sample dynamic sized record fifo implementation 15 * This module shows how to create a variable sized record fifo. 18 /* fifo size in elements (bytes) / 22 #define PROC_FIFO "record-fifo" 31 define DYNAMIC in this example for a dynamically allocated fifo. 33 * Otherwise the fifo storage will be a part of the fifo structure. 76 printk(KERN_INFO "record fifo test start\n"); in testfunc() 80 /* show the size of the next record in the fifo */ in testfunc() 81 printk(KERN_INFO "fifo peek len: %u\n", kfifo_peek_len(&test)); in testfunc() [all …]
/linux/drivers/net/ethernet/google/gve/
H A D	gve_tx.c	1 // SPDX-License-Identifier: (GPL-2.0 OR MIT) 4 * Copyright (C) 2015-2021 Google, Inc. 20 iowrite32be(val, &priv->db_bar2[be32_to_cpu(q_resources->db_index)]); in gve_tx_put_doorbell() 26 struct gve_tx_ring tx = &priv->tx[tx_qid]; in gve_xdp_tx_flush() 28 gve_tx_put_doorbell(priv, tx->q_resources, tx->req); in gve_xdp_tx_flush() 35 gve_tx_fifo_* manages the Registered Segment as a FIFO 39 gve_tx_fifo_init(struct gve_priv * priv,struct gve_tx_fifo * fifo) gve_tx_fifo_init() argument 55 gve_tx_fifo_release(struct gve_priv * priv,struct gve_tx_fifo * fifo) gve_tx_fifo_release() argument 63 gve_tx_fifo_pad_alloc_one_frag(struct gve_tx_fifo * fifo,size_t bytes) gve_tx_fifo_pad_alloc_one_frag() argument 69 gve_tx_fifo_can_alloc(struct gve_tx_fifo * fifo,size_t bytes) gve_tx_fifo_can_alloc() argument 84 gve_tx_alloc_fifo(struct gve_tx_fifo * fifo,size_t bytes,struct gve_tx_iovec iov[2]) gve_tx_alloc_fifo() argument 139 gve_tx_free_fifo(struct gve_tx_fifo * fifo,size_t bytes) gve_tx_free_fifo() argument [all...]
/linux/drivers/char/xilinx_hwicap/
H A D	fifo_icap.c	24 * (c) Copyright 2007-2008 Xilinx Inc. 39 #define XHI_WF_OFFSET 0x100 /* Write FIFO / 40 #define XHI_RF_OFFSET 0x104 / Read FIFO / 41 #define XHI_SZ_OFFSET 0x108 / Size Register / 44 #define XHI_WFV_OFFSET 0x114 / Write FIFO Vacancy Register / 45 #define XHI_RFO_OFFSET 0x118 / Read FIFO Occupancy Register / 66 #define XHI_IPIXR_RFULL_MASK 0x00000008 / Read FIFO Full / 67 #define XHI_IPIXR_WEMPTY_MASK 0x00000004 / Write FIFO Empty / 68 #define XHI_IPIXR_RDP_MASK 0x00000002 / Read FIFO half full / 69 #define XHI_IPIXR_WRP_MASK 0x00000001 / Write FIFO half full */ [all …]
/linux/arch/powerpc/platforms/512x/
H A D	mpc512x_lpbfifo.c	1 // SPDX-License-Identifier: GPL-2.0-only 3 * The driver for Freescale MPC512x LocalPlus Bus FIFO 6 * Copyright (C) 2013-2015 Alexander Popov <alex.popov@linux.com>. 21 #include <linux/dma-direction.h> 22 #include <linux/dma-mapping.h> 30 u32 size; member 61 * mpc512x_lpbfifo_irq - IRQ handler for LPB FIFO 76 if (!req \|\| req->dir == MPC512X_LPBFIFO_REQ_DIR_READ) { in mpc512x_lpbfifo_irq() 81 status = in_be32(&lpbfifo.regs->status); in mpc512x_lpbfifo_irq() 84 out_be32(&lpbfifo.regs->enable, in mpc512x_lpbfifo_irq() [all …]
/linux/tools/testing/selftests/tc-testing/tc-tests/qdiscs/
H A D	fifo.json	`7 "fifo" 17 "matchPattern": "qdisc bfifo 1: root.limit [0-9]+b", 28 "fifo" 38 "matchPattern": "qdisc pfifo 1: root.limit [0-9]+p", 49 "fifo" 59 "matchPattern": "qdisc bfifo ffff: root.*limit [0-9]+b", 67 "name": "Add bfifo qdisc on egress with queue size of 3000 bytes", 70 "fifo" 88 "name": "Add pfifo qdisc on egress with queue size of 3000 packets", 91 "fifo" [all …]`
/linux/arch/arm/boot/dts/microchip/
H A D	sam9x60.dtsi	`1 // SPDX-License-Identifier: (GPL-2.0+ OR MIT) 3 * sam9x60.dtsi - Device Tree Include file for Microchip SAM9X60 SoC 10 #include <dt-bindings/dma/at91.h> 11 #include <dt-bindings/pinctrl/at91.h> 12 #include <dt-bindings/interrupt-controller/irq.h> 13 #include <dt-bindings/gpio/gpio.h> 14 #include <dt-bindings/clock/at91.h> 15 #include <dt-bindings/mfd/at91-usart.h> 16 #include <dt-bindings/mfd/atmel-flexcom.h> 19 #address-cells = <1>; [all …]`
/linux/drivers/rpmsg/
H A D	qcom_glink_smem.c	1 // SPDX-License-Identifier: GPL-2.0 32 #define TX_BLOCKED_CMD_RESERVE 8 /* size of struct read_notif_request / 56 void fifo; member 66 struct qcom_glink_smem smem = pipe->smem; in glink_smem_rx_avail() 68 void fifo; in glink_smem_rx_avail() local 72 if (!pipe->fifo) { in glink_smem_rx_avail() 73 fifo = qcom_smem_get(smem->remote_pid, in glink_smem_rx_avail() 75 if (IS_ERR(fifo)) { in glink_smem_rx_avail() 76 pr_err("failed to acquire RX fifo handle: %ld\n", in glink_smem_rx_avail() 77 PTR_ERR(fifo)); in glink_smem_rx_avail() [all …]
/linux/drivers/net/ethernet/tehuti/
H A D	tehuti.c	1 // SPDX-License-Identifier: GPL-2.0-or-later 12 * 1) RX Free Fifo - RXF - holds descriptors of empty buffers to accept incoming 13 * traffic. This Fifo is filled by SW and is readen by HW. Each descriptor holds 14 * info about buffer's location, size and ID. An ID field is used to identify a 15 * buffer when it's returned with data via RXD Fifo (see below) 16 * 2) RX Data Fifo - RXD - holds descriptors of full buffers. This Fifo is 18 * HW pops descriptor from RXF Fifo, stores ID, fills buffer with incoming data, 20 * pushes it into RXD Fifo and raises interrupt to indicate new RX data. 23 * One holds 1.5K packets and another - 26K packets. Depending on incoming 24 * packet size, HW desides on a RXF Fifo to pop buffer from. When packet is [all …]
/linux/drivers/net/ethernet/sun/
H A D	sunhme.h	1 /* SPDX-License-Identifier: GPL-2.0 / 38 #define GREG_STAT_ACNTEXP 0x00000004 / Align-error counter expired / 39 #define GREG_STAT_CCNTEXP 0x00000008 / CRC-error counter expired / 40 #define GREG_STAT_LCNTEXP 0x00000010 / Length-error counter expired / 41 #define GREG_STAT_RFIFOVF 0x00000020 / Receive FIFO overflow / 42 #define GREG_STAT_CVCNTEXP 0x00000040 / Code-violation counter expired / 45 #define GREG_STAT_TFIFO_UND 0x00000200 / Transmit FIFO underrun / 46 #define GREG_STAT_MAXPKTERR 0x00000400 / Max-packet size error / 47 #define GREG_STAT_NCNTEXP 0x00000800 / Normal-collision counter expired / 48 #define GREG_STAT_ECNTEXP 0x00001000 / Excess-collision counter expired */ [all …]

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