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device/pci: Add MSI-X helper functions

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Basic PCI MSI-X table helper functions.
Imported from GNU/Linux kernel PCI subsystem.

To be used on Cavium to configure MSI-X tables.

Change-Id: I94413712e7986efd17e6b11ba59f6eb390384c8c
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/26329
Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Patrick Rudolph
2018-05-16 14:56:22 +02:00
committed by Philipp Deppenwiese
parent fe98e90671
commit 4e2f95b789
3 changed files with 98 additions and 0 deletions
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12
src/include/device/pci_def.h
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@@ -292,6 +292,18 @@
#define PCI_MSI_DATA_64 12 /* 16 bits of data for 64-bit devices */
#define PCI_MSI_MASK_BIT 16 /* Mask bits register */
/* MSI-X registers */
#define PCI_MSIX_FLAGS 2
#define PCI_MSIX_FLAGS_QSIZE 0x7FF /* table size */
#define PCI_MSIX_FLAGS_MASKALL 0x4000 /* Mask all vectors for this function */
#define PCI_MSIX_FLAGS_ENABLE 0x8000 /* MSI-X enable */
#define PCI_MSIX_TABLE 4 /* Table offset */
#define PCI_MSIX_PBA 8 /* Pending Bit Array offset */
#define PCI_MSIX_PBA_BIR 0x7 /* BAR index */
#define PCI_MSIX_PBA_OFFSET ~0x7 /* Offset into specified BAR */
#define PCI_CAP_MSIX_SIZEOF 12 /* size of MSIX registers */
/* CompactPCI Hotswap Register */
#define PCI_CHSWP_CSR 2 /* Control and Status Register */