e1000_osdep.c revision 286833 
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33/*$FreeBSD: head/sys/dev/e1000/e1000_osdep.c 286833 2015-08-16 20:13:58Z sbruno $*/
34
35#include "e1000_api.h"
36
37/*
38 * NOTE: the following routines using the e1000
39 * 	naming style are provided to the shared
40 *	code but are OS specific
41 */
42
43void
44e1000_write_pci_cfg(struct e1000_hw *hw, u32 reg, u16 *value)
45{
46	pci_write_config(((struct e1000_osdep *)hw->back)->dev, reg, *value, 2);
47}
48
49void
50e1000_read_pci_cfg(struct e1000_hw *hw, u32 reg, u16 *value)
51{
52	*value = pci_read_config(((struct e1000_osdep *)hw->back)->dev, reg, 2);
53}
54
55void
56e1000_pci_set_mwi(struct e1000_hw *hw)
57{
58	pci_write_config(((struct e1000_osdep *)hw->back)->dev, PCIR_COMMAND,
59	    (hw->bus.pci_cmd_word | CMD_MEM_WRT_INVALIDATE), 2);
60}
61
62void
63e1000_pci_clear_mwi(struct e1000_hw *hw)
64{
65	pci_write_config(((struct e1000_osdep *)hw->back)->dev, PCIR_COMMAND,
66	    (hw->bus.pci_cmd_word & ~CMD_MEM_WRT_INVALIDATE), 2);
67}
68
69/*
70 * Read the PCI Express capabilities
71 */
72int32_t
73e1000_read_pcie_cap_reg(struct e1000_hw *hw, u32 reg, u16 *value)
74{
75	device_t dev = ((struct e1000_osdep *)hw->back)->dev;
76	u32	offset;
77
78	pci_find_cap(dev, PCIY_EXPRESS, &offset);
79	*value = pci_read_config(dev, offset + reg, 2);
80	return (E1000_SUCCESS);
81}
82
83/*
84 * Write the PCI Express capabilities
85 */
86int32_t
87e1000_write_pcie_cap_reg(struct e1000_hw *hw, u32 reg, u16 *value)
88{
89	device_t dev = ((struct e1000_osdep *)hw->back)->dev;
90	u32	offset;
91
92	pci_find_cap(dev, PCIY_EXPRESS, &offset);
93	pci_write_config(dev, offset + reg, *value, 2);
94	return (E1000_SUCCESS);
95}
96