cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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imx-dma.h (2667B)

      1/* SPDX-License-Identifier: GPL-2.0-only */
      2/*
      3 * Copyright 2004-2009 Freescale Semiconductor, Inc. All Rights Reserved.
      4 */
      5
      6#ifndef __LINUX_DMA_IMX_H
      7#define __LINUX_DMA_IMX_H
      8
      9#include <linux/scatterlist.h>
     10#include <linux/device.h>
     11#include <linux/dmaengine.h>
     12
     13/*
     14 * This enumerates peripheral types. Used for SDMA.
     15 */
     16enum sdma_peripheral_type {
     17	IMX_DMATYPE_SSI,	/* MCU domain SSI */
     18	IMX_DMATYPE_SSI_SP,	/* Shared SSI */
     19	IMX_DMATYPE_MMC,	/* MMC */
     20	IMX_DMATYPE_SDHC,	/* SDHC */
     21	IMX_DMATYPE_UART,	/* MCU domain UART */
     22	IMX_DMATYPE_UART_SP,	/* Shared UART */
     23	IMX_DMATYPE_FIRI,	/* FIRI */
     24	IMX_DMATYPE_CSPI,	/* MCU domain CSPI */
     25	IMX_DMATYPE_CSPI_SP,	/* Shared CSPI */
     26	IMX_DMATYPE_SIM,	/* SIM */
     27	IMX_DMATYPE_ATA,	/* ATA */
     28	IMX_DMATYPE_CCM,	/* CCM */
     29	IMX_DMATYPE_EXT,	/* External peripheral */
     30	IMX_DMATYPE_MSHC,	/* Memory Stick Host Controller */
     31	IMX_DMATYPE_MSHC_SP,	/* Shared Memory Stick Host Controller */
     32	IMX_DMATYPE_DSP,	/* DSP */
     33	IMX_DMATYPE_MEMORY,	/* Memory */
     34	IMX_DMATYPE_FIFO_MEMORY,/* FIFO type Memory */
     35	IMX_DMATYPE_SPDIF,	/* SPDIF */
     36	IMX_DMATYPE_IPU_MEMORY,	/* IPU Memory */
     37	IMX_DMATYPE_ASRC,	/* ASRC */
     38	IMX_DMATYPE_ESAI,	/* ESAI */
     39	IMX_DMATYPE_SSI_DUAL,	/* SSI Dual FIFO */
     40	IMX_DMATYPE_ASRC_SP,	/* Shared ASRC */
     41	IMX_DMATYPE_SAI,	/* SAI */
     42	IMX_DMATYPE_MULTI_SAI,	/* MULTI FIFOs For Audio */
     43};
     44
     45enum imx_dma_prio {
     46	DMA_PRIO_HIGH = 0,
     47	DMA_PRIO_MEDIUM = 1,
     48	DMA_PRIO_LOW = 2
     49};
     50
     51struct imx_dma_data {
     52	int dma_request; /* DMA request line */
     53	int dma_request2; /* secondary DMA request line */
     54	enum sdma_peripheral_type peripheral_type;
     55	int priority;
     56};
     57
     58static inline int imx_dma_is_ipu(struct dma_chan *chan)
     59{
     60	return !strcmp(dev_name(chan->device->dev), "ipu-core");
     61}
     62
     63static inline int imx_dma_is_general_purpose(struct dma_chan *chan)
     64{
     65	return !strcmp(chan->device->dev->driver->name, "imx-sdma") ||
     66		!strcmp(chan->device->dev->driver->name, "imx-dma");
     67}
     68
     69/**
     70 * struct sdma_peripheral_config - SDMA config for audio
     71 * @n_fifos_src: Number of FIFOs for recording
     72 * @n_fifos_dst: Number of FIFOs for playback
     73 * @sw_done: Use software done. Needed for PDM (micfil)
     74 *
     75 * Some i.MX Audio devices (SAI, micfil) have multiple successive FIFO
     76 * registers. For multichannel recording/playback the SAI/micfil have
     77 * one FIFO register per channel and the SDMA engine has to read/write
     78 * the next channel from/to the next register and wrap around to the
     79 * first register when all channels are handled. The number of active
     80 * channels must be communicated to the SDMA engine using this struct.
     81 */
     82struct sdma_peripheral_config {
     83	int n_fifos_src;
     84	int n_fifos_dst;
     85	bool sw_done;
     86};
     87
     88#endif /* __LINUX_DMA_IMX_H */