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https://github.com/torvalds/linux
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04846b5b81
Impact: cleanup, spec compliance
This patch does:
- Remove unused msi/msix_enable/disable macros.
User should use msi/msix_set_enable() functions instead.
- Remove unused msix_mask/unmask/pending macros.
These macros are useless because they are not based on any of
the PCI Local Bus Specifications properly.
It seems that they were written based on a draft of PCI spec,
and that the draft was the MSI-X ECN that underwent membership
review in September 2002.
(* In the draft, the size of a entry in MSI-X table was 64bit,
containing 32bit message data and DWORD aligned lower address
plus a pending bit and a mask bit.(30+1+1bit) The higher
address was placed in MSI-X capability structure and shared
by all entries.)
- Remove PCI_MSIX_FLAGS_BITMASK.
This definition also come from the draft ECN.
Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Reviewed-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
31 lines
1.1 KiB
C
31 lines
1.1 KiB
C
/*
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* Copyright (C) 2003-2004 Intel
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* Copyright (C) Tom Long Nguyen (tom.l.nguyen@intel.com)
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*/
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#ifndef MSI_H
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#define MSI_H
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#define PCI_MSIX_ENTRY_SIZE 16
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#define PCI_MSIX_ENTRY_LOWER_ADDR_OFFSET 0
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#define PCI_MSIX_ENTRY_UPPER_ADDR_OFFSET 4
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#define PCI_MSIX_ENTRY_DATA_OFFSET 8
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#define PCI_MSIX_ENTRY_VECTOR_CTRL_OFFSET 12
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#define msi_control_reg(base) (base + PCI_MSI_FLAGS)
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#define msi_lower_address_reg(base) (base + PCI_MSI_ADDRESS_LO)
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#define msi_upper_address_reg(base) (base + PCI_MSI_ADDRESS_HI)
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#define msi_data_reg(base, is64bit) \
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( (is64bit == 1) ? base+PCI_MSI_DATA_64 : base+PCI_MSI_DATA_32 )
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#define msi_mask_bits_reg(base, is64bit) \
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( (is64bit == 1) ? base+PCI_MSI_MASK_BIT : base+PCI_MSI_MASK_BIT-4)
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#define is_64bit_address(control) (!!(control & PCI_MSI_FLAGS_64BIT))
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#define is_mask_bit_support(control) (!!(control & PCI_MSI_FLAGS_MASKBIT))
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#define msix_table_offset_reg(base) (base + 0x04)
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#define msix_pba_offset_reg(base) (base + 0x08)
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#define msix_table_size(control) ((control & PCI_MSIX_FLAGS_QSIZE)+1)
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#define multi_msix_capable(control) msix_table_size((control))
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#endif /* MSI_H */
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