AuxXxilium/linux_dsm_epyc7002
1
0
Fork 0
mirror of https://github.com/AuxXxilium/linux_dsm_epyc7002.git synced 2024-11-26 21:30:54 +07:00
Code Issues Actions Packages Projects Releases Wiki Activity

PCI MSI: Define PCI_MSI_MASK_32/64

Browse Source 
Impact: cleanup, improve readability

Define PCI_MSI_MASK_32/64 for 32/64bit devices, instead of using
implicit offset (-4), "PCI_MSI_MASK_BIT - 4" and "PCI_MSI_MASK_BIT".

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>
This commit is contained in:
Hidetoshi Seto 2009-04-20 10:54:59 +09:00 committed by Jesse Barnes
parent 64f039d3d7
commit 67b5db6502
3 changed files with 6 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/pci/msi.c
View File

@ -381,7 +381,7 @@ static int msi_capability_init(struct pci_dev *dev, int nvec)
entry->msi_attrib.default_irq = dev->irq; /* Save IOAPIC IRQ */ entry->msi_attrib.default_irq = dev->irq; /* Save IOAPIC IRQ */
entry->msi_attrib.pos = pos; entry->msi_attrib.pos = pos;
entry->mask_pos = msi_mask_bits_reg(pos, entry->msi_attrib.is_64); entry->mask_pos = msi_mask_reg(pos, entry->msi_attrib.is_64);
/* All MSIs are unmasked by default, Mask them all */ /* All MSIs are unmasked by default, Mask them all */
if (entry->msi_attrib.maskbit) if (entry->msi_attrib.maskbit)
pci_read_config_dword(dev, entry->mask_pos, &entry->masked); pci_read_config_dword(dev, entry->mask_pos, &entry->masked);

6
drivers/pci/msi.h
View File

@ -16,9 +16,9 @@
#define msi_lower_address_reg(base) (base + PCI_MSI_ADDRESS_LO) #define msi_lower_address_reg(base) (base + PCI_MSI_ADDRESS_LO)
#define msi_upper_address_reg(base) (base + PCI_MSI_ADDRESS_HI) #define msi_upper_address_reg(base) (base + PCI_MSI_ADDRESS_HI)
#define msi_data_reg(base, is64bit) \ #define msi_data_reg(base, is64bit) \
( (is64bit == 1) ? base+PCI_MSI_DATA_64 : base+PCI_MSI_DATA_32 ) (base + ((is64bit == 1) ? PCI_MSI_DATA_64 : PCI_MSI_DATA_32))
#define msi_mask_bits_reg(base, is64bit) \ #define msi_mask_reg(base, is64bit) \
( (is64bit == 1) ? base+PCI_MSI_MASK_BIT : base+PCI_MSI_MASK_BIT-4) (base + ((is64bit == 1) ? PCI_MSI_MASK_64 : PCI_MSI_MASK_32))
#define is_64bit_address(control) (!!(control & PCI_MSI_FLAGS_64BIT)) #define is_64bit_address(control) (!!(control & PCI_MSI_FLAGS_64BIT))
#define is_mask_bit_support(control) (!!(control & PCI_MSI_FLAGS_MASKBIT)) #define is_mask_bit_support(control) (!!(control & PCI_MSI_FLAGS_MASKBIT))

3
include/linux/pci_regs.h
View File

@ -295,8 +295,9 @@
#define PCI_MSI_ADDRESS_LO 4 /* Lower 32 bits */ #define PCI_MSI_ADDRESS_LO 4 /* Lower 32 bits */
#define PCI_MSI_ADDRESS_HI 8 /* Upper 32 bits (if PCI_MSI_FLAGS_64BIT set) */ #define PCI_MSI_ADDRESS_HI 8 /* Upper 32 bits (if PCI_MSI_FLAGS_64BIT set) */
#define PCI_MSI_DATA_32 8 /* 16 bits of data for 32-bit devices */ #define PCI_MSI_DATA_32 8 /* 16 bits of data for 32-bit devices */
#define PCI_MSI_MASK_32 12 /* Mask bits register for 32-bit devices */
#define PCI_MSI_DATA_64 12 /* 16 bits of data for 64-bit devices */ #define PCI_MSI_DATA_64 12 /* 16 bits of data for 64-bit devices */
#define PCI_MSI_MASK_BIT 16 /* Mask bits register */ #define PCI_MSI_MASK_64 16 /* Mask bits register for 64-bit devices */
/* MSI-X registers (these are at offset PCI_MSIX_FLAGS) */ /* MSI-X registers (these are at offset PCI_MSIX_FLAGS) */
#define PCI_MSIX_FLAGS 2 #define PCI_MSIX_FLAGS 2