C++ (Cpp) iproc_pcie_write_reg 예제들

예제 #1

파일: pcie-iproc.c 프로젝트: acton393/linux

static void iproc_pcie_reset(struct iproc_pcie *pcie)
{
	u32 val;

	if (pcie->type == IPROC_PCIE_PAXC) {
		val = iproc_pcie_read_reg(pcie, IPROC_PCIE_CLK_CTRL);
		val &= ~PAXC_RESET_MASK;
		iproc_pcie_write_reg(pcie, IPROC_PCIE_CLK_CTRL, val);
		udelay(100);
		val |= PAXC_RESET_MASK;
		iproc_pcie_write_reg(pcie, IPROC_PCIE_CLK_CTRL, val);
		udelay(100);
		return;
	}

	/*
	 * Select perst_b signal as reset source. Put the device into reset,
	 * and then bring it out of reset
	 */
	val = iproc_pcie_read_reg(pcie, IPROC_PCIE_CLK_CTRL);
	val &= ~EP_PERST_SOURCE_SELECT & ~EP_MODE_SURVIVE_PERST &
		~RC_PCIE_RST_OUTPUT;
	iproc_pcie_write_reg(pcie, IPROC_PCIE_CLK_CTRL, val);
	udelay(250);

	val |= RC_PCIE_RST_OUTPUT;
	iproc_pcie_write_reg(pcie, IPROC_PCIE_CLK_CTRL, val);
	msleep(100);
}

예제 #2

파일: pcie-iproc.c 프로젝트: acton393/linux

/**
 * Note access to the configuration registers are protected at the higher layer
 * by 'pci_lock' in drivers/pci/access.c
 */
static void __iomem *iproc_pcie_map_cfg_bus(struct pci_bus *bus,
					    unsigned int devfn,
					    int where)
{
	struct iproc_pcie *pcie = iproc_data(bus);
	unsigned slot = PCI_SLOT(devfn);
	unsigned fn = PCI_FUNC(devfn);
	unsigned busno = bus->number;
	u32 val;
	u16 offset;

	/* root complex access */
	if (busno == 0) {
		if (slot > 0 || fn > 0)
			return NULL;

		iproc_pcie_write_reg(pcie, IPROC_PCIE_CFG_IND_ADDR,
				     where & CFG_IND_ADDR_MASK);
		offset = iproc_pcie_reg_offset(pcie, IPROC_PCIE_CFG_IND_DATA);
		if (iproc_pcie_reg_is_invalid(offset))
			return NULL;
		else
			return (pcie->base + offset);
	}

	/*
	 * PAXC is connected to an internally emulated EP within the SoC.  It
	 * allows only one device.
	 */
	if (pcie->type == IPROC_PCIE_PAXC)
		if (slot > 0)
			return NULL;

	/* EP device access */
	val = (busno << CFG_ADDR_BUS_NUM_SHIFT) |
		(slot << CFG_ADDR_DEV_NUM_SHIFT) |
		(fn << CFG_ADDR_FUNC_NUM_SHIFT) |
		(where & CFG_ADDR_REG_NUM_MASK) |
		(1 & CFG_ADDR_CFG_TYPE_MASK);
	iproc_pcie_write_reg(pcie, IPROC_PCIE_CFG_ADDR, val);
	offset = iproc_pcie_reg_offset(pcie, IPROC_PCIE_CFG_DATA);
	if (iproc_pcie_reg_is_invalid(offset))
		return NULL;
	else
		return (pcie->base + offset);
}

예제 #3

파일: pcie-iproc.c 프로젝트: grafuls/linux-full-history

/**
 * Note access to the configuration registers are protected at the higher layer
 * by 'pci_lock' in drivers/pci/access.c
 */
static void __iomem *iproc_pcie_map_cfg_bus(struct pci_bus *bus,
					    unsigned int devfn,
					    int where)
{
	struct iproc_pcie *pcie = iproc_data(bus);
	unsigned slot = PCI_SLOT(devfn);
	unsigned fn = PCI_FUNC(devfn);
	unsigned busno = bus->number;
	u32 val;
	u16 offset;

	if (!iproc_pcie_device_is_valid(pcie, slot, fn))
		return NULL;

	/* root complex access */
	if (busno == 0) {
		iproc_pcie_write_reg(pcie, IPROC_PCIE_CFG_IND_ADDR,
				     where & CFG_IND_ADDR_MASK);
		offset = iproc_pcie_reg_offset(pcie, IPROC_PCIE_CFG_IND_DATA);
		if (iproc_pcie_reg_is_invalid(offset))
			return NULL;
		else
			return (pcie->base + offset);
	}

	/* EP device access */
	val = (busno << CFG_ADDR_BUS_NUM_SHIFT) |
		(slot << CFG_ADDR_DEV_NUM_SHIFT) |
		(fn << CFG_ADDR_FUNC_NUM_SHIFT) |
		(where & CFG_ADDR_REG_NUM_MASK) |
		(1 & CFG_ADDR_CFG_TYPE_MASK);
	iproc_pcie_write_reg(pcie, IPROC_PCIE_CFG_ADDR, val);
	offset = iproc_pcie_reg_offset(pcie, IPROC_PCIE_CFG_DATA);
	if (iproc_pcie_reg_is_invalid(offset))
		return NULL;
	else
		return (pcie->base + offset);
}

예제 #4

파일: pcie-iproc.c 프로젝트: acton393/linux

static void iproc_pcie_enable(struct iproc_pcie *pcie)
{
	iproc_pcie_write_reg(pcie, IPROC_PCIE_INTX_EN, SYS_RC_INTX_MASK);
}