xref: /freebsd-10.2-release/sys/dev/e1000/e1000_osdep.c

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/*$FreeBSD: releng/10.2/sys/dev/e1000/e1000_osdep.c 219902 2011-03-23 13:10:15Z jhb $*/

#include "e1000_api.h"

/*
 * NOTE: the following routines using the e1000
 * 	naming style are provided to the shared
 *	code but are OS specific
 */

void
e1000_write_pci_cfg(struct e1000_hw *hw, u32 reg, u16 *value)
{
	pci_write_config(((struct e1000_osdep *)hw->back)->dev, reg, *value, 2);
}

void
e1000_read_pci_cfg(struct e1000_hw *hw, u32 reg, u16 *value)
{
	*value = pci_read_config(((struct e1000_osdep *)hw->back)->dev, reg, 2);
}

void
e1000_pci_set_mwi(struct e1000_hw *hw)
{
	pci_write_config(((struct e1000_osdep *)hw->back)->dev, PCIR_COMMAND,
	    (hw->bus.pci_cmd_word | CMD_MEM_WRT_INVALIDATE), 2);
}

void
e1000_pci_clear_mwi(struct e1000_hw *hw)
{
	pci_write_config(((struct e1000_osdep *)hw->back)->dev, PCIR_COMMAND,
	    (hw->bus.pci_cmd_word & ~CMD_MEM_WRT_INVALIDATE), 2);
}

/*
 * Read the PCI Express capabilities
 */
int32_t
e1000_read_pcie_cap_reg(struct e1000_hw *hw, u32 reg, u16 *value)
{
	device_t dev = ((struct e1000_osdep *)hw->back)->dev;
	u32	offset;

	pci_find_cap(dev, PCIY_EXPRESS, &offset);
	*value = pci_read_config(dev, offset + reg, 2);
	return (E1000_SUCCESS);
}

/*
 * Write the PCI Express capabilities
 */
int32_t
e1000_write_pcie_cap_reg(struct e1000_hw *hw, u32 reg, u16 *value)
{
	device_t dev = ((struct e1000_osdep *)hw->back)->dev;
	u32	offset;

	pci_find_cap(dev, PCIY_EXPRESS, &offset);
	pci_write_config(dev, offset + reg, *value, 2);
	return (E1000_SUCCESS);
}