mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-21 11:44:01 +08:00
1c8d7b0a56
Add the new API pci_enable_msi_block() to allow drivers to request multiple MSI and reimplement pci_enable_msi in terms of pci_enable_msi_block. Ensure that the architecture back ends don't have to know about multiple MSI. Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
37 lines
1.5 KiB
C
37 lines
1.5 KiB
C
/*
|
|
* Copyright (C) 2003-2004 Intel
|
|
* Copyright (C) Tom Long Nguyen (tom.l.nguyen@intel.com)
|
|
*/
|
|
|
|
#ifndef MSI_H
|
|
#define MSI_H
|
|
|
|
#define PCI_MSIX_ENTRY_SIZE 16
|
|
#define PCI_MSIX_ENTRY_LOWER_ADDR_OFFSET 0
|
|
#define PCI_MSIX_ENTRY_UPPER_ADDR_OFFSET 4
|
|
#define PCI_MSIX_ENTRY_DATA_OFFSET 8
|
|
#define PCI_MSIX_ENTRY_VECTOR_CTRL_OFFSET 12
|
|
|
|
#define msi_control_reg(base) (base + PCI_MSI_FLAGS)
|
|
#define msi_lower_address_reg(base) (base + PCI_MSI_ADDRESS_LO)
|
|
#define msi_upper_address_reg(base) (base + PCI_MSI_ADDRESS_HI)
|
|
#define msi_data_reg(base, is64bit) \
|
|
( (is64bit == 1) ? base+PCI_MSI_DATA_64 : base+PCI_MSI_DATA_32 )
|
|
#define msi_mask_bits_reg(base, is64bit) \
|
|
( (is64bit == 1) ? base+PCI_MSI_MASK_BIT : base+PCI_MSI_MASK_BIT-4)
|
|
#define msi_disable(control) control &= ~PCI_MSI_FLAGS_ENABLE
|
|
#define is_64bit_address(control) (!!(control & PCI_MSI_FLAGS_64BIT))
|
|
#define is_mask_bit_support(control) (!!(control & PCI_MSI_FLAGS_MASKBIT))
|
|
|
|
#define msix_table_offset_reg(base) (base + 0x04)
|
|
#define msix_pba_offset_reg(base) (base + 0x08)
|
|
#define msix_enable(control) control |= PCI_MSIX_FLAGS_ENABLE
|
|
#define msix_disable(control) control &= ~PCI_MSIX_FLAGS_ENABLE
|
|
#define msix_table_size(control) ((control & PCI_MSIX_FLAGS_QSIZE)+1)
|
|
#define multi_msix_capable msix_table_size
|
|
#define msix_unmask(address) (address & ~PCI_MSIX_FLAGS_BITMASK)
|
|
#define msix_mask(address) (address | PCI_MSIX_FLAGS_BITMASK)
|
|
#define msix_is_pending(address) (address & PCI_MSIX_FLAGS_PENDMASK)
|
|
|
|
#endif /* MSI_H */
|