• 设为首页
  • 点击收藏
  • 手机版
    手机扫一扫访问
    迪恩网络手机版
  • 关注官方公众号
    微信扫一扫关注
    公众号
登陆 注册

C++ bus_read_4函数代码示例

原作者: [db:作者] 来自: [db:来源] 收藏 邀请

本文整理汇总了C++中bus_read_4函数的典型用法代码示例。如果您正苦于以下问题：C++ bus_read_4函数的具体用法？C++ bus_read_4怎么用？C++ bus_read_4使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。



在下文中一共展示了bus_read_4函数的20个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的C++代码示例。

示例1: altpll_write_params

/*
 * Configure all PLL counter parameters.
 */
static int
altpll_write_params(struct altpll_softc *sc, uint32_t mul, uint32_t div,
     uint32_t c0)
{
	uint32_t status;
	int retry;

	altpll_write_param(sc, ALTPLL_OFF_TYPE_N, div);
	altpll_write_param(sc, ALTPLL_OFF_TYPE_M, mul);
	altpll_write_param(sc, ALTPLL_OFF_TYPE_C0, c0);
	/*
	 * Program C1 with the same parameters as C0. It seems the PLL does not
	 * run correctly otherwise.
	 */
	altpll_write_param(sc, ALTPLL_OFF_TYPE_C1, c0);
	/* Trigger the transfer. */
	bus_write_4(sc->ap_reg_res, ALTPLL_OFF_TRANSFER, htole32(0xff));
	/* Wait for the transfer to complete. */
	status = bus_read_4(sc->ap_reg_res, ALTPLL_OFF_TRANSFER);
	for (retry = 0;
	    status != htole32(ALTPLL_TRANSFER_COMPLETE) && retry < 10; retry++)
		status = bus_read_4(sc->ap_reg_res, ALTPLL_OFF_TRANSFER);
	if (status != htole32(ALTPLL_TRANSFER_COMPLETE)) {
		device_printf(sc->ap_dev,
		    "timed out waiting for transfer to PLL\n");
		/* XXXEM ignore error for now - not set by old FPGA bitfiles. */
	}

	return (0);
}
开发者ID:RichardsonAlex，项目名称:cheribsd，代码行数:33，代码来源:altpll.c


示例2: davbus_cint

static void 
davbus_cint(void *ptr)
{
	struct davbus_softc *d = ptr;
	u_int	reg, status, mask;

	mtx_lock(&d->mutex);

	reg = bus_read_4(d->reg, DAVBUS_SOUND_CTRL);
	if (reg & DAVBUS_PORTCHG) {
		
		status = bus_read_4(d->reg, DAVBUS_CODEC_STATUS);
		
		if (d->read_status && d->set_outputs) {

			mask = (*d->read_status)(d, status);
			(*d->set_outputs)(d, mask);
		}

		/* Clear the interrupt. */
		bus_write_4(d->reg, DAVBUS_SOUND_CTRL, reg);
	}

	mtx_unlock(&d->mutex);
}
开发者ID:JabirTech，项目名称:Source，代码行数:25，代码来源:davbus.c


示例3: gdt_mpr_intr

void
gdt_mpr_intr(struct gdt_softc *gdt, struct gdt_intr_ctx *ctx)
{
    int i;

    GDT_DPRINTF(GDT_D_INTR, ("gdt_mpr_intr(%p) ", gdt));

    bus_write_1(gdt->sc_dpmem, GDT_MPR_EDOOR, 0xff);

    if (ctx->istatus & 0x80) {          /* error flag */
        ctx->istatus &= ~0x80;
        ctx->cmd_status = bus_read_2(gdt->sc_dpmem, GDT_MPR_STATUS);
    } else                                      /* no error */
        ctx->cmd_status = GDT_S_OK;

    ctx->info = bus_read_4(gdt->sc_dpmem, GDT_MPR_INFO);
    ctx->service = bus_read_2(gdt->sc_dpmem, GDT_MPR_SERVICE);
    ctx->info2 = bus_read_4(gdt->sc_dpmem, GDT_MPR_INFO + sizeof (u_int32_t));

    /* event string */
    if (ctx->istatus == GDT_ASYNCINDEX) {
        if (ctx->service != GDT_SCREENSERVICE && 
            (gdt->sc_fw_vers & 0xff) >= 0x1a) {
            gdt->sc_dvr.severity = bus_read_1(gdt->sc_dpmem, GDT_SEVERITY);
            for (i = 0; i < 256; ++i) {
                gdt->sc_dvr.event_string[i] = bus_read_1(gdt->sc_dpmem,
		    GDT_EVT_BUF + i);
                if (gdt->sc_dvr.event_string[i] == 0)
                    break;
            }
        }
    }
    bus_write_1(gdt->sc_dpmem, GDT_MPR_SEMA1, 0);
}
开发者ID:cyrilmagsuci，项目名称:freebsd，代码行数:34，代码来源:iir_pci.c


示例4: ismt_submit

static int
ismt_submit(struct ismt_softc *sc, struct ismt_desc *desc, uint8_t slave,
    uint8_t is_read)
{
	uint32_t err, fmhp, val;

	desc->control |= ISMT_DESC_FAIR;
	if (sc->using_msi)
		desc->control |= ISMT_DESC_INT;

	desc->tgtaddr_rw = ISMT_DESC_ADDR_RW(slave, is_read);
	desc->dptr_low = (sc->dma_buffer_bus_addr & 0xFFFFFFFFLL);
	desc->dptr_high = (sc->dma_buffer_bus_addr >> 32);

	wmb();

	fmhp = sc->head << 16;
	val = bus_read_4(sc->mmio_res, ISMT_MSTR_MCTRL);
	val &= ~ISMT_MCTRL_FMHP;
	val |= fmhp;
	bus_write_4(sc->mmio_res, ISMT_MSTR_MCTRL, val);

	/* set the start bit */
	val = bus_read_4(sc->mmio_res, ISMT_MSTR_MCTRL);
	val |= ISMT_MCTRL_SS;
	bus_write_4(sc->mmio_res, ISMT_MSTR_MCTRL, val);

	err = tsleep(sc, PWAIT, "ismt_wait", 5 * hz);

	if (err != 0) {
		ISMT_DEBUG(sc->pcidev, "%s timeout\n", __func__);
		return (SMB_ETIMEOUT);
	}

	ISMT_DEBUG(sc->pcidev, "%s status=0x%x\n", __func__, desc->status);

	if (desc->status & ISMT_DESC_SCS)
		return (SMB_ENOERR);

	if (desc->status & ISMT_DESC_NAK)
		return (SMB_ENOACK);

	if (desc->status & ISMT_DESC_CRC)
		return (SMB_EBUSERR);

	if (desc->status & ISMT_DESC_COL)
		return (SMB_ECOLLI);

	if (desc->status & ISMT_DESC_LPR)
		return (SMB_EINVAL);

	if (desc->status & (ISMT_DESC_DLTO | ISMT_DESC_CLTO))
		return (SMB_ETIMEOUT);

	return (SMB_EBUSERR);
}
开发者ID:2asoft，项目名称:freebsd，代码行数:56，代码来源:ismt.c


示例5: lsi64854_pp_intr

/*
 * Parallel port DMA interrupt
 */
static int
lsi64854_pp_intr(void *arg)
{
	struct lsi64854_softc *sc = arg;
	bus_dma_tag_t dmat;
	bus_dmamap_t dmam;
	size_t dmasize;
	int ret, trans, resid = 0;
	uint32_t csr;

	csr = L64854_GCSR(sc);

	DPRINTF(LDB_PP, ("%s: addr 0x%x, csr %b\n", __func__,
	    bus_read_4(sc->sc_res, L64854_REG_ADDR), csr, PDMACSR_BITS));

	if ((csr & (P_ERR_PEND | P_SLAVE_ERR)) != 0) {
		resid = bus_read_4(sc->sc_res, L64854_REG_CNT);
		device_printf(sc->sc_dev, "error: resid %d csr=%b\n", resid,
		    csr, PDMACSR_BITS);
		csr &= ~P_EN_DMA;	/* Stop DMA. */
		/* Invalidate the queue; SLAVE_ERR bit is write-to-clear */
		csr |= P_INVALIDATE | P_SLAVE_ERR;
		L64854_SCSR(sc, csr);
		return (-1);
	}

	ret = (csr & P_INT_PEND) != 0;

	if (sc->sc_active != 0) {
		DMA_DRAIN(sc, 0);
		resid = bus_read_4(sc->sc_res, L64854_REG_CNT);
	}

	/* DMA has stopped */
	csr &= ~D_EN_DMA;
	L64854_SCSR(sc, csr);
	sc->sc_active = 0;

	dmasize = sc->sc_dmasize;
	trans = dmasize - resid;
	if (trans < 0)				/* transferred < 0? */
		trans = dmasize;
	*sc->sc_dmalen -= trans;
	*sc->sc_dmaaddr = (char *)*sc->sc_dmaaddr + trans;

	if (dmasize != 0) {
		dmat = sc->sc_buffer_dmat;
		dmam = sc->sc_dmamap;
		bus_dmamap_sync(dmat, dmam, (csr & D_WRITE) != 0 ?
		    BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE);
		bus_dmamap_unload(dmat, dmam);
	}

	return (ret != 0);
}
开发者ID:coyizumi，项目名称:cs111，代码行数:58，代码来源:lsi64854.c


示例6: screamer_init

static int
screamer_init(struct snd_mixer *m)
{
	struct davbus_softc *d;

	d = mix_getdevinfo(m);

	d->read_status = screamer_read_status;
	d->set_outputs = screamer_set_outputs;

	mtx_lock(&d->mutex);

	screamer_write_locked(d, SCREAMER_CODEC_ADDR0, SCREAMER_INPUT_CD | 
	    SCREAMER_DEFAULT_CD_GAIN);

	screamer_set_outputs(d, screamer_read_status(d, 
	    bus_read_4(d->reg, DAVBUS_CODEC_STATUS)));

	screamer_write_locked(d, SCREAMER_CODEC_ADDR2, 0);
	screamer_write_locked(d, SCREAMER_CODEC_ADDR4, 0);
	screamer_write_locked(d, SCREAMER_CODEC_ADDR5, 0);
	screamer_write_locked(d, SCREAMER_CODEC_ADDR6, 0);

	mtx_unlock(&d->mutex);

	mix_setdevs(m, SOUND_MASK_VOLUME);

	return (0);
}
开发者ID:JabirTech，项目名称:Source，代码行数:29，代码来源:davbus.c


示例7: bhndb_pci_probe_read

/**
 * Read a data item from the bridged address space at the given @p offset
 * from @p addr.
 * 
 * A dynamic register window will be used to map @p addr.
 * 
 * @param probe		The bhndb_pci probe state to be used to perform the
 *			read.
 * @param addr		The base address.
 * @param offset	The offset from @p addr at which to read a data item of
 *			@p width bytes.
 * @param width		Item width (1, 2, or 4 bytes).
 */
static uint32_t
bhndb_pci_probe_read(struct bhndb_pci_probe *probe, bhnd_addr_t addr,
    bhnd_size_t offset, u_int width)
{
	struct resource	*r;
	bus_size_t	 res_offset;
	int		 error;

	/* Map the target address */
	error = bhndb_pci_probe_map(probe, addr, offset, width, &r,
	    &res_offset);
	if (error) {
		device_printf(probe->dev, "error mapping %#jx+%#jx for "
		    "reading: %d\n", addr, offset, error);
		return (UINT32_MAX);
	}

	/* Perform read */
	switch (width) {
	case 1:
		return (bus_read_1(r, res_offset));
	case 2:
		return (bus_read_2(r, res_offset));
	case 4:
		return (bus_read_4(r, res_offset));
	default:
		panic("unsupported width: %u", width);
	}
}
开发者ID:FreeBSDFoundation，项目名称:freebsd，代码行数:42，代码来源:bhndb_pci.c


示例8: terasic_mtl_reg_read

/*
 * All I/O to/from the MTL register device must be 32-bit, and aligned to
 * 32-bit.
 */
static int
terasic_mtl_reg_read(struct cdev *dev, struct uio *uio, int flag)
{
	struct terasic_mtl_softc *sc;
	u_long offset, size;
	uint32_t v;
	int error;

	if (uio->uio_offset < 0 || uio->uio_offset % 4 != 0 ||
	    uio->uio_resid % 4 != 0)
		return (ENODEV);
	sc = dev->si_drv1;
	size = rman_get_size(sc->mtl_reg_res);
	error = 0;
	if ((uio->uio_offset + uio->uio_resid < 0) ||
	    (uio->uio_offset + uio->uio_resid > size))
		return (ENODEV);
	while (uio->uio_resid > 0) {
		offset = uio->uio_offset;
		if (offset + sizeof(v) > size)
			return (ENODEV);
		v = bus_read_4(sc->mtl_reg_res, offset);
		error = uiomove(&v, sizeof(v), uio);
		if (error)
			return (error);
	}
	return (error);
}
开发者ID:FreeBSDFoundation，项目名称:freebsd，代码行数:32，代码来源:terasic_mtl_reg.c


示例9: hpet_get_timecount

static u_int
hpet_get_timecount(struct timecounter *tc)
{
	struct hpet_softc *sc;

	sc = tc->tc_priv;
	return (bus_read_4(sc->mem_res, HPET_MAIN_COUNTER));
}
开发者ID:ChristosKa，项目名称:freebsd，代码行数:8，代码来源:acpi_hpet.c


示例10: imx6_anatop_read_4

uint32_t
imx6_anatop_read_4(bus_size_t offset)
{

	KASSERT(imx6_anatop_sc != NULL, ("imx6_anatop_read_4 sc NULL"));

	return (bus_read_4(imx6_anatop_sc->res[MEMRES], offset));
}
开发者ID:ele7enxxh，项目名称:dtrace-pf，代码行数:8，代码来源:imx6_anatop.c


示例11: macgpio_suspend

static int
macgpio_suspend(device_t dev)
{
	struct macgpio_softc *sc;
	int i;

	sc = device_get_softc(dev);
	sc->sc_saved_gpio_levels[0] = bus_read_4(sc->sc_gpios, GPIO_LEVELS_0);
	sc->sc_saved_gpio_levels[1] = bus_read_4(sc->sc_gpios, GPIO_LEVELS_1);

	for (i = 0; i < GPIO_COUNT; i++)
		sc->sc_saved_gpios[i] = bus_read_1(sc->sc_gpios, GPIO_BASE + i);
	for (i = 0; i < GPIO_EXTINT_COUNT; i++)
		sc->sc_saved_extint_gpios[i] = bus_read_1(sc->sc_gpios, GPIO_EXTINT_BASE + i);

	return (0);
}
开发者ID:FreeBSDFoundation，项目名称:freebsd，代码行数:17，代码来源:macgpio.c


示例12: usbphy_utmi_disable

static int
usbphy_utmi_disable(struct usbphy_softc *sc)
{
	int rv;
	uint32_t val;

	usbphy_utmi_phy_clk(sc, false);

	if (sc->dr_mode == USB_DR_MODE_DEVICE) {
		val = RD4(sc, IF_USB_SUSP_CTRL);
		val &= ~USB_WAKEUP_DEBOUNCE_COUNT(~0);
		val |= USB_WAKE_ON_CNNT_EN_DEV;
		val |= USB_WAKEUP_DEBOUNCE_COUNT(5);
		WR4(sc, IF_USB_SUSP_CTRL, val);
	}

	val = RD4(sc, IF_USB_SUSP_CTRL);
	val |= UTMIP_RESET;
	WR4(sc, IF_USB_SUSP_CTRL, val);

	val = RD4(sc, UTMIP_BAT_CHRG_CFG0);
	val |= UTMIP_PD_CHRG;
	WR4(sc, UTMIP_BAT_CHRG_CFG0, val);

	val = RD4(sc, UTMIP_XCVR_CFG0);
	val |= UTMIP_FORCE_PD_POWERDOWN;
	val |= UTMIP_FORCE_PD2_POWERDOWN;
	val |= UTMIP_FORCE_PDZI_POWERDOWN;
	WR4(sc, UTMIP_XCVR_CFG0, val);

	val = RD4(sc, UTMIP_XCVR_CFG1);
	val |= UTMIP_FORCE_PDDISC_POWERDOWN;
	val |= UTMIP_FORCE_PDCHRP_POWERDOWN;
	val |= UTMIP_FORCE_PDDR_POWERDOWN;
	WR4(sc, UTMIP_XCVR_CFG1, val);

	usbpby_enable_cnt--;
	if (usbpby_enable_cnt <= 0) {
		rv = clk_enable(sc->clk_pads);
		if (rv != 0) {
			device_printf(sc->dev,
			    "Cannot enable 'utmi-pads' clock\n");
			return (rv);
		}
		val =bus_read_4(sc->pads_res, UTMIP_BIAS_CFG0);
		val |= UTMIP_OTGPD;
		val |= UTMIP_BIASPD;
		bus_write_4(sc->pads_res, UTMIP_BIAS_CFG0, val);

		rv = clk_disable(sc->clk_pads);
		if (rv != 0) {
			device_printf(sc->dev,
			    "Cannot disable 'utmi-pads' clock\n");
			return (rv);
		}
	}
	return (0);
}
开发者ID:2asoft，项目名称:freebsd，代码行数:58，代码来源:tegra_usbphy.c


示例13: reg_read

static __inline uint32_t
reg_read(ig4iic_softc_t *sc, uint32_t reg)
{
	uint32_t value;

	bus_barrier(sc->regs_res, reg, 4, BUS_SPACE_BARRIER_READ);
	value = bus_read_4(sc->regs_res, reg);
	return (value);
}
开发者ID:cyrilmagsuci，项目名称:freebsd，代码行数:9，代码来源:ig4_iic.c


示例14: terasic_mtl_reg_textframebufaddr_get

void
terasic_mtl_reg_textframebufaddr_get(struct terasic_mtl_softc *sc,
    uint32_t *addrp)
{
	uint32_t addr;

	addr = bus_read_4(sc->mtl_reg_res, TERASIC_MTL_OFF_TEXTFRAMEBUFADDR);
	*addrp = le32toh(addr);
}
开发者ID:FreeBSDFoundation，项目名称:freebsd，代码行数:9，代码来源:terasic_mtl_reg.c


示例15: hpet_disable

static void
hpet_disable(struct hpet_softc *sc)
{
	uint32_t val;

	val = bus_read_4(sc->mem_res, HPET_CONFIG);
	val &= ~HPET_CNF_ENABLE;
	bus_write_4(sc->mem_res, HPET_CONFIG, val);
}
开发者ID:ChristosKa，项目名称:freebsd，代码行数:9，代码来源:acpi_hpet.c


示例16: screamer_write_locked

static void
screamer_write_locked(struct davbus_softc *d, u_int reg, u_int val)
{
	u_int 		x;

	KASSERT(val == (val & 0xfff), ("bad val"));

	while (bus_read_4(d->reg, DAVBUS_CODEC_CTRL) & DAVBUS_CODEC_BUSY)
		DELAY(100);

	x = reg;
	x |= SCREAMER_CODEC_EMSEL0;
	x |= val;
	bus_write_4(d->reg, DAVBUS_CODEC_CTRL, x);

	while (bus_read_4(d->reg, DAVBUS_CODEC_CTRL) & DAVBUS_CODEC_BUSY)
		DELAY(100);
}
开发者ID:JabirTech，项目名称:Source，代码行数:18，代码来源:davbus.c


示例17: macio_enable_wireless

int
macio_enable_wireless(device_t dev, bool enable)
{
	struct macio_softc *sc = device_get_softc(dev);
	uint32_t x;

	if (enable) {
		x = bus_read_4(sc->sc_memr, KEYLARGO_FCR2);
		x |= 0x4;
		bus_write_4(sc->sc_memr, KEYLARGO_FCR2, x);

		/* Enable card slot. */
		bus_write_1(sc->sc_memr, KEYLARGO_GPIO_BASE + 0x0f, 5);
		DELAY(1000);
		bus_write_1(sc->sc_memr, KEYLARGO_GPIO_BASE + 0x0f, 4);
		DELAY(1000);
		x = bus_read_4(sc->sc_memr, KEYLARGO_FCR2);
		x &= ~0x80000000;

		bus_write_4(sc->sc_memr, KEYLARGO_FCR2, x);
		/* out8(gpio + 0x10, 4); */

		bus_write_1(sc->sc_memr, KEYLARGO_EXTINT_GPIO_REG_BASE + 0x0b, 0);
		bus_write_1(sc->sc_memr, KEYLARGO_EXTINT_GPIO_REG_BASE + 0x0a, 0x28);
		bus_write_1(sc->sc_memr, KEYLARGO_EXTINT_GPIO_REG_BASE + 0x0d, 0x28);
		bus_write_1(sc->sc_memr, KEYLARGO_GPIO_BASE + 0x0d, 0x28);
		bus_write_1(sc->sc_memr, KEYLARGO_GPIO_BASE + 0x0e, 0x28);
		bus_write_4(sc->sc_memr, 0x1c000, 0);

		/* Initialize the card. */
		bus_write_4(sc->sc_memr, 0x1a3e0, 0x41);
		x = bus_read_4(sc->sc_memr, KEYLARGO_FCR2);
		x |= 0x80000000;
		bus_write_4(sc->sc_memr, KEYLARGO_FCR2, x);
	} else {
		x = bus_read_4(sc->sc_memr, KEYLARGO_FCR2);
		x &= ~0x4;
		bus_write_4(sc->sc_memr, KEYLARGO_FCR2, x);
		/* out8(gpio + 0x10, 0); */
	}

	return (0);
}
开发者ID:Alkzndr，项目名称:freebsd，代码行数:43，代码来源:macio.c


示例18: bcm_dma_reset

static void
bcm_dma_reset(device_t dev, int ch)
{
	struct bcm_dma_softc *sc = device_get_softc(dev);
	struct bcm_dma_cb *cb;
	uint32_t cs;
	int count;

	if (ch < 0 || ch >= BCM_DMA_CH_MAX)
		return;

	cs = bus_read_4(sc->sc_mem, BCM_DMA_CS(ch));

	if (cs & CS_ACTIVE) {
		/* pause current task */
		bus_write_4(sc->sc_mem, BCM_DMA_CS(ch), 0);

		count = 1000;
		do {
			cs = bus_read_4(sc->sc_mem, BCM_DMA_CS(ch));
		} while (!(cs & CS_ISPAUSED) && (count-- > 0));

		if (!(cs & CS_ISPAUSED)) {
			device_printf(dev,
			    "Can't abort DMA transfer at channel %d\n", ch);
		}

		bus_write_4(sc->sc_mem, BCM_DMA_CBNEXT(ch), 0);

		/* Complete everything, clear interrupt */
		bus_write_4(sc->sc_mem, BCM_DMA_CS(ch),
		    CS_ABORT | CS_INT | CS_END| CS_ACTIVE);
	}

	/* clear control blocks */
	bus_write_4(sc->sc_mem, BCM_DMA_CBADDR(ch), 0);
	bus_write_4(sc->sc_mem, BCM_DMA_CBNEXT(ch), 0);

	/* Reset control block */
	cb = sc->sc_dma_ch[ch].cb;
	bzero(cb, sizeof(*cb));
	cb->info = INFO_WAIT_RESP;
}
开发者ID:ele7enxxh，项目名称:dtrace-pf，代码行数:43，代码来源:bcm2835_dma.c


示例19: rt305x_ic_get

uint32_t
rt305x_ic_get(uint32_t reg)
{
	struct rt305x_ic_softc *sc = rt305x_ic_softc;

	if (!sc)
		return (0);

	return (bus_read_4(sc->mem_res, reg));
}
开发者ID:coyizumi，项目名称:cs111，代码行数:10，代码来源:rt305x_ic.c


示例20: bcm_dma_intr

static void
bcm_dma_intr(void *arg)
{
	struct bcm_dma_softc *sc = bcm_dma_sc;
	struct bcm_dma_ch *ch = (struct bcm_dma_ch *)arg;
	uint32_t cs, debug;

	/* my interrupt? */
	cs = bus_read_4(sc->sc_mem, BCM_DMA_CS(ch->ch));

	if (!(cs & (CS_INT | CS_ERR)))
		return;

	/* running? */
	if (!(ch->flags & BCM_DMA_CH_USED)) {
		device_printf(sc->sc_dev,
		    "unused DMA intr CH=%d, CS=%x\n", ch->ch, cs);
		return;
	}

	if (cs & CS_ERR) {
		debug = bus_read_4(sc->sc_mem, BCM_DMA_DEBUG(ch->ch));
		device_printf(sc->sc_dev, "DMA error %d on CH%d\n",
			debug & DEBUG_ERROR_MASK, ch->ch);
		bus_write_4(sc->sc_mem, BCM_DMA_DEBUG(ch->ch), 
		    debug & DEBUG_ERROR_MASK);
		bcm_dma_reset(sc->sc_dev, ch->ch);
	}

	if (cs & CS_INT) {
		/* acknowledge interrupt */
		bus_write_4(sc->sc_mem, BCM_DMA_CS(ch->ch), 
		    CS_INT | CS_END);

		/* Prepare for possible access to len field */
		bus_dmamap_sync(sc->sc_dma_tag, ch->dma_map,
		    BUS_DMASYNC_POSTWRITE);

		/* save callback function and argument */
		if (ch->intr_func)
			ch->intr_func(ch->ch, ch->intr_arg);
	}
}
开发者ID:ele7enxxh，项目名称:dtrace-pf，代码行数:43，代码来源:bcm2835_dma.c



注：本文中的bus_read_4函数示例由纯净天空整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。

鲜花
握手
雷人
路过
鸡蛋
该文章已有0人参与评论

请发表评论

全部评论

专题导读
More+
上一篇：
C++ bus_register函数代码示例发布时间：2022-05-30
下一篇：
C++ bus_read_1函数代码示例发布时间：2022-05-30
热门推荐
More+
热门话题
More+
阅读排行榜

扫描微信二维码

查看手机版网站

随时了解更新最新资讯

139-2527-9053

在线客服（服务时间 9:00～18:00）

在线QQ客服
地址：深圳市南山区西丽大学城创智工业园
电邮：jeky_zhao#qq.com
移动电话：139-2527-9053

Powered by 互联科技 X3.4© 2001-2213 极客世界.|Sitemap