Ejemplos de msmsdcc_config_dma en C++ (Cpp)

Ejemplo n.º 1

Archivo: msm_sdcc_gisele.c Proyecto: OpenSwift/android_kernel_swift

static void
msmsdcc_start_data(struct msmsdcc_host *host, struct mmc_data *data)
{
	unsigned int datactrl, timeout;
	unsigned long long clks;
	void __iomem *base = host->base;
	unsigned int pio_irqmask = 0;

	host->curr.data = data;
	host->curr.xfer_size = data->blksz * data->blocks;
	host->curr.xfer_remain = host->curr.xfer_size;
	host->curr.data_xfered = 0;
	host->curr.got_dataend = 0;
	host->curr.got_datablkend = 0;

	memset(&host->pio, 0, sizeof(host->pio));

	clks = (unsigned long long)data->timeout_ns * host->clk_rate;
	do_div(clks, 1000000000UL);
	timeout = data->timeout_clks + (unsigned int)clks;
	writel(timeout, base + MMCIDATATIMER);

	writel(host->curr.xfer_size, base + MMCIDATALENGTH);

	datactrl = MCI_DPSM_ENABLE | (data->blksz << 4);

	if (!msmsdcc_config_dma(host, data))
		datactrl |= MCI_DPSM_DMAENABLE;
	else {
		host->pio.sg = data->sg;
		host->pio.sg_len = data->sg_len;
		host->pio.sg_off = 0;

		if (data->flags & MMC_DATA_READ) {
			pio_irqmask = MCI_RXFIFOHALFFULLMASK;
			if (host->curr.xfer_remain < MCI_FIFOSIZE)
				pio_irqmask |= MCI_RXDATAAVLBLMASK;
		} else
			pio_irqmask = MCI_TXFIFOHALFEMPTYMASK;
	}

	if (data->flags & MMC_DATA_READ)
		datactrl |= MCI_DPSM_DIRECTION;

	writel(pio_irqmask, base + MMCIMASK1);
	writel(datactrl, base + MMCIDATACTRL);

	if (datactrl & MCI_DPSM_DMAENABLE) {
		host->dma.busy = 1;
		dsb();
		msm_dmov_enqueue_cmd(host->dma.channel, &host->dma.hdr);
		if (data->flags & MMC_DATA_WRITE)
			host->prog_scan = 1;
	}
}

Ejemplo n.º 2

static void
msmsdcc_start_data(struct msmsdcc_host *host, struct mmc_data *data,
			struct mmc_command *cmd, u32 c)
{
	unsigned int datactrl, timeout;
	unsigned long long clks;
	void __iomem *base = host->base;
	unsigned int pio_irqmask = 0;

	host->curr.data = data;
	host->curr.xfer_size = data->blksz * data->blocks;
	host->curr.xfer_remain = host->curr.xfer_size;
	host->curr.data_xfered = 0;
	host->curr.got_dataend = 0;
	host->curr.got_datablkend = 0;

	memset(&host->pio, 0, sizeof(host->pio));

	datactrl = MCI_DPSM_ENABLE | (data->blksz << 4);

	if (!msmsdcc_config_dma(host, data))
		datactrl |= MCI_DPSM_DMAENABLE;
	else {
		host->pio.sg = data->sg;
		host->pio.sg_len = data->sg_len;
		host->pio.sg_off = 0;

		if (data->flags & MMC_DATA_READ) {
			pio_irqmask = MCI_RXFIFOHALFFULLMASK;
			if (host->curr.xfer_remain < MCI_FIFOSIZE)
				pio_irqmask |= MCI_RXDATAAVLBLMASK;
		} else
			pio_irqmask = MCI_TXFIFOHALFEMPTYMASK;
	}

	if (data->flags & MMC_DATA_READ)
		datactrl |= MCI_DPSM_DIRECTION;

	clks = (unsigned long long)data->timeout_ns * host->clk_rate;
	do_div(clks, 1000000000UL);
	timeout = data->timeout_clks + (unsigned int)clks*2 ;

#if defined (CONFIG_MACH_ACER_A1)
	timeout *= 10;
#endif

	if (datactrl & MCI_DPSM_DMAENABLE) {
		/* Save parameters for the exec function */
		host->cmd_timeout = timeout;
		host->cmd_pio_irqmask = pio_irqmask;
		host->cmd_datactrl = datactrl;
		host->cmd_cmd = cmd;

		host->dma.hdr.exec_func = msmsdcc_dma_exec_func;
		host->dma.hdr.user = (void *)host;
		host->dma.busy = 1;

		if (cmd) {
			msmsdcc_start_command_deferred(host, cmd, &c);
			host->cmd_c = c;
		}
		dsb();
		msm_dmov_enqueue_cmd_ext(host->dma.channel, &host->dma.hdr);
		if (data->flags & MMC_DATA_WRITE)
			host->prog_scan = 1;
	} else {
		writel(timeout, base + MMCIDATATIMER);

		writel(host->curr.xfer_size, base + MMCIDATALENGTH);

		writel(pio_irqmask, base + MMCIMASK1);
		msmsdcc_delay(host);	/* Allow parms to be applied */
		writel(datactrl, base + MMCIDATACTRL);

		if (cmd) {
			msmsdcc_delay(host); /* Delay between data/command */
			/* Daisy-chain the command if requested */
			msmsdcc_start_command(host, cmd, c);
		}
	}
}