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nic_uio: probe and attach devices after unload

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Added code that saves the pointers to the detached devices, during
driver loading, and during driver unloading, go over the list,
and re-attach them by calling device_probe_and_attach
on each device.

Signed-off-by: Raz Amir <razamir22@gmail.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
This commit is contained in:
Raz Amir 2015-03-05 18:24:23 +02:00 committed by Thomas Monjalon
parent 390cb6b89c
commit 40adab038d
1 changed files with 28 additions and 5 deletions
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33
lib/librte_eal/bsdapp/nic_uio/nic_uio.c
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@ -55,6 +55,9 @@ __FBSDID("$FreeBSD$");
#define MAX_BARS (PCIR_MAX_BAR_0 + 1)
#define MAX_DETACHED_DEVICES 128
static device_t detached_devices[MAX_DETACHED_DEVICES] = {};
static int num_detached = 0;
struct nic_uio_softc {
device_t dev_t;
@ -289,17 +292,37 @@ nic_uio_load(void)
function = strtol(token, NULL, 10);
dev = pci_find_bsf(bus, device, function);
if (dev != NULL)
for (i = 0; i < NUM_DEVICES; i++)
if (pci_get_vendor(dev) == devices[i].vend &&
pci_get_device(dev) == devices[i].dev)
device_detach(dev);
if (dev == NULL)
continue;
for (i = 0; i < NUM_DEVICES; i++)
if (pci_get_vendor(dev) == devices[i].vend &&
pci_get_device(dev) == devices[i].dev) {
if (num_detached < MAX_DETACHED_DEVICES) {
printf("nic_uio_load: detaching and storing dev=%p\n", dev);
detached_devices[num_detached++] = dev;
} else
printf("nic_uio_load: reached MAX_DETACHED_DEVICES=%d. dev=%p won't be reattached\n",
MAX_DETACHED_DEVICES, dev);
device_detach(dev);
}
}
}
static void
nic_uio_unload(void)
{
int i;
printf("nic_uio_unload: entered...\n");
for (i = 0; i < num_detached; i++) {
printf("nic_uio_unload: calling to device_probe_and_attach for dev=%p...\n",
detached_devices[i]);
device_probe_and_attach(detached_devices[i]);
printf("nic_uio_unload: done.\n");
}
printf("nic_uio_unload: leaving...\n");
}
static int