michaelh/zephyr
1
0
Fork 0
Code Releases Activity

drivers/pcie/shell: add basic probe for MSI-X capability

Browse source 
This trivial patch extends the PCIe shell to check for and report
on a device's ability to use MSI-X interrupt signaling.

Signed-off-by: Charles E. Youse <charles.youse@intel.com>
This commit is contained in:
Charles E. Youse 2019-06-04 13:28:46 -07:00 • committed by Anas Nashif
commit ea1e19107c
2 changed files with 9 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

6
drivers/pcie/shell.c
View file

@ -29,6 +29,12 @@ static void show_msi(const struct shell *shell, pcie_bdf_t bdf)
(data & PCIE_MSI_MCR_64) ? ", 64-bit" : "",
(data & PCIE_MSI_MCR_EN) ? ", enabled" : "");
}
msi = pcie_get_cap(bdf, PCIE_MSIX_CAP_ID);
if (msi) {
shell_fprintf(shell, SHELL_NORMAL, " MSI-X support\n");
}
#endif
}

5
include/drivers/pcie/msi.h
View file

@ -73,10 +73,11 @@ extern u16_t pcie_msi_mdr(unsigned int irq);
extern bool pcie_set_msi(pcie_bdf_t bdf, unsigned int irq);
/*
* MSI capability ID in the PCI configuration capability list.
* MSI capability IDs in the PCI configuration capability list.
*/
#define PCIE_MSI_CAP_ID 05U
#define PCIE_MSI_CAP_ID 0x05U
#define PCIE_MSIX_CAP_ID 0x11U
/*
* The first word of the MSI capability is shared with the