示例#1
0
/*
 * VM to hypervisor call mechanism. We use the standard VMware naming
 * convention since shared code is calling this function as well.
 */
int vmci_send_datagram(struct vmci_datagram *dg)
{
	unsigned long flags;
	int result;

	/* Check args. */
	if (dg == NULL)
		return VMCI_ERROR_INVALID_ARGS;

	/*
	 * Need to acquire spinlock on the device because the datagram
	 * data may be spread over multiple pages and the monitor may
	 * interleave device user rpc calls from multiple
	 * VCPUs. Acquiring the spinlock precludes that
	 * possibility. Disabling interrupts to avoid incoming
	 * datagrams during a "rep out" and possibly landing up in
	 * this function.
	 */
	spin_lock_irqsave(&vmci_dev_spinlock, flags);

	if (vmci_dev_g) {
		iowrite8_rep(vmci_dev_g->iobase + VMCI_DATA_OUT_ADDR,
			     dg, VMCI_DG_SIZE(dg));
		result = ioread32(vmci_dev_g->iobase + VMCI_RESULT_LOW_ADDR);
	} else {
		result = VMCI_ERROR_UNAVAILABLE;
	}

	spin_unlock_irqrestore(&vmci_dev_spinlock, flags);

	return result;
}
示例#2
0
static void oxnas_nand_write_buf(struct mtd_info *mtd, const u8 *buf, int len)
{
	struct nand_chip *chip = mtd_to_nand(mtd);
	struct oxnas_nand_ctrl *oxnas = nand_get_controller_data(chip);

	iowrite8_rep(oxnas->io_base, buf, len);
}
示例#3
0
void bcma_host_pci_block_write(struct bcma_device *core, const void *buffer,
			       size_t count, u16 offset, u8 reg_width)
{
	void __iomem *addr = core->bus->mmio + offset;
	if (core->bus->mapped_core != core)
		bcma_host_pci_switch_core(core);
	switch (reg_width) {
	case sizeof(u8):
		iowrite8_rep(addr, buffer, count);
		break;
	case sizeof(u16):
		WARN_ON(count & 1);
		iowrite16_rep(addr, buffer, count >> 1);
		break;
	case sizeof(u32):
		WARN_ON(count & 3);
		iowrite32_rep(addr, buffer, count >> 2);
		break;
	default:
		WARN_ON(1);
	}
}
示例#4
0
文件: dm9000.c 项目: 03199618/linux
static void dm9000_outblk_8bit(void __iomem *reg, void *data, int count)
{
	iowrite8_rep(reg, data, count);
}
示例#5
0
文件: io.c 项目: 0-T-0/ps4-linux
void outsb(unsigned long port, const void *src, unsigned long count)
{
	iowrite8_rep(ioport_map(port, 1), src, count);
}