tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * Copyright (C) 2003-2004 Intel
3 * Copyright (C) Tom Long Nguyen (tom.l.nguyen@intel.com)
4 */
5
6#ifndef MSI_H
7#define MSI_H
8
9#define PCI_MSIX_ENTRY_SIZE 16
10#define PCI_MSIX_ENTRY_LOWER_ADDR_OFFSET 0
11#define PCI_MSIX_ENTRY_UPPER_ADDR_OFFSET 4
12#define PCI_MSIX_ENTRY_DATA_OFFSET 8
13#define PCI_MSIX_ENTRY_VECTOR_CTRL_OFFSET 12
14
15#define msi_control_reg(base) (base + PCI_MSI_FLAGS)
16#define msi_lower_address_reg(base) (base + PCI_MSI_ADDRESS_LO)
17#define msi_upper_address_reg(base) (base + PCI_MSI_ADDRESS_HI)
18#define msi_data_reg(base, is64bit) \
19 ( (is64bit == 1) ? base+PCI_MSI_DATA_64 : base+PCI_MSI_DATA_32 )
20#define msi_mask_bits_reg(base, is64bit) \
21 ( (is64bit == 1) ? base+PCI_MSI_MASK_BIT : base+PCI_MSI_MASK_BIT-4)
22#define msi_disable(control) control &= ~PCI_MSI_FLAGS_ENABLE
23#define multi_msi_capable(control) \
24 (1 << ((control & PCI_MSI_FLAGS_QMASK) >> 1))
25#define multi_msi_enable(control, num) \
26 control |= (((num >> 1) << 4) & PCI_MSI_FLAGS_QSIZE);
27#define is_64bit_address(control) (!!(control & PCI_MSI_FLAGS_64BIT))
28#define is_mask_bit_support(control) (!!(control & PCI_MSI_FLAGS_MASKBIT))
29#define msi_enable(control, num) multi_msi_enable(control, num); \
30 control |= PCI_MSI_FLAGS_ENABLE
31
32#define msix_table_offset_reg(base) (base + 0x04)
33#define msix_pba_offset_reg(base) (base + 0x08)
34#define msix_enable(control) control |= PCI_MSIX_FLAGS_ENABLE
35#define msix_disable(control) control &= ~PCI_MSIX_FLAGS_ENABLE
36#define msix_table_size(control) ((control & PCI_MSIX_FLAGS_QSIZE)+1)
37#define multi_msix_capable msix_table_size
38#define msix_unmask(address) (address & ~PCI_MSIX_FLAGS_BITMASK)
39#define msix_mask(address) (address | PCI_MSIX_FLAGS_BITMASK)
40#define msix_is_pending(address) (address & PCI_MSIX_FLAGS_PENDMASK)
41
42#endif /* MSI_H */