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pci: add flag to force unbind device

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Some devices need to be unbound in order to be used via the PMD
without kernel module.

Signed-off-by: Damien Millescamps <damien.millescamps@6wind.com>
Acked-by: Thomas Monjalon <thomas.monjalon@6wind.com>
This commit is contained in:
Damien Millescamps 2013-07-10 15:14:52 +02:00 committed by David Marchand
parent 10ed99419b
commit 050a84b9af
2 changed files with 9 additions and 1 deletions
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2
lib/librte_eal/common/include/rte_pci.h
View File

@ -192,6 +192,8 @@ struct rte_pci_driver {
#define RTE_PCI_DRV_NEED_IGB_UIO 0x0001
/** Device driver must be registered several times until failure */
#define RTE_PCI_DRV_MULTIPLE 0x0002
/** Device needs to be unbound even if no module is provided */
#define RTE_PCI_DRV_FORCE_UNBIND 0x0004
/**< Internal use only - Macro used by pci addr parsing functions **/
#define GET_PCIADDR_FIELD(in, fd, lim, dlm) \

8
lib/librte_eal/linuxapp/eal/eal_pci.c
View File

@ -974,10 +974,16 @@ rte_eal_pci_probe_one_driver(struct rte_pci_driver *dr, struct rte_pci_device *d
}
#ifdef RTE_EAL_UNBIND_PORTS
if (dr->drv_flags & RTE_PCI_DRV_NEED_IGB_UIO)
if (dr->drv_flags & RTE_PCI_DRV_NEED_IGB_UIO) {
/* unbind driver and load uio resources for Intel NICs */
if (pci_switch_module(dr, dev, 1, IGB_UIO_NAME) < 0)
return -1;
} else if (dr->drv_flags & RTE_PCI_DRV_FORCE_UNBIND &&
rte_eal_process_type() == RTE_PROC_PRIMARY) {
/* unbind current driver */
if (pci_unbind_kernel_driver(dev) < 0)
return -1;
}
#else
if (dr->drv_flags & RTE_PCI_DRV_NEED_IGB_UIO)
/* just map resources for Intel NICs */