C++ (Cpp) iproc_pcie_reg_is_invalid Examples

Example #1

File: pcie-iproc.c Project: 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);
}

Example #2

File: pcie-iproc.c Project: acton393/linux

static inline u32 iproc_pcie_read_reg(struct iproc_pcie *pcie,
				      enum iproc_pcie_reg reg)
{
	u16 offset = iproc_pcie_reg_offset(pcie, reg);

	if (iproc_pcie_reg_is_invalid(offset))
		return 0;

	return readl(pcie->base + offset);
}

Example #3

File: pcie-iproc.c Project: acton393/linux

static inline void iproc_pcie_write_reg(struct iproc_pcie *pcie,
					enum iproc_pcie_reg reg, u32 val)
{
	u16 offset = iproc_pcie_reg_offset(pcie, reg);

	if (iproc_pcie_reg_is_invalid(offset))
		return;

	writel(val, pcie->base + offset);
}

Example #4

File: pcie-iproc.c Project: acton393/linux

static inline void iproc_pcie_ob_write(struct iproc_pcie *pcie,
				       enum iproc_pcie_reg reg,
				       unsigned window, u32 val)
{
	u16 offset = iproc_pcie_reg_offset(pcie, reg);

	if (iproc_pcie_reg_is_invalid(offset))
		return;

	writel(val, pcie->base + offset + (window * 8));
}

Example #5

File: pcie-iproc.c Project: 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);
}