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* [dpdk-dev] [PATCH] pci: save list of detached devices, and re-probe during driver unload
@ 2015-02-26  6:33 Raz Amir
  2015-03-01 13:48 ` Neil Horman
                   ` (5 more replies)
  0 siblings, 6 replies; 26+ messages in thread
From: Raz Amir @ 2015-02-26  6:33 UTC (permalink / raw)
  To: dev

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>
---
 lib/librte_eal/bsdapp/nic_uio/nic_uio.c | 26 +++++++++++++++++++++++++-
 1 file changed, 25 insertions(+), 1 deletion(-)

diff --git a/lib/librte_eal/bsdapp/nic_uio/nic_uio.c b/lib/librte_eal/bsdapp/nic_uio/nic_uio.c
index 5ae8560..7d702a5 100644
--- a/lib/librte_eal/bsdapp/nic_uio/nic_uio.c
+++ b/lib/librte_eal/bsdapp/nic_uio/nic_uio.c
@@ -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 last_detached = 0;
 
 struct nic_uio_softc {
 	device_t        dev_t;
@@ -291,14 +294,35 @@ nic_uio_load(void)
 		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)
+						pci_get_device(dev) == devices[i].dev) {
+							if (last_detached+1 < MAX_DETACHED_DEVICES) {
+								printf("nic_uio_load: detaching and storing dev=%p\n", dev);
+								detached_devices[last_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 < last_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
-- 
2.1.2

^ permalink raw reply	[flat|nested] 26+ messages in thread

end of thread, other threads:[~2015-07-08 22:52 UTC | newest]

Thread overview: 26+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2015-02-26  6:33 [dpdk-dev] [PATCH] pci: save list of detached devices, and re-probe during driver unload Raz Amir
2015-03-01 13:48 ` Neil Horman
2015-03-01 14:21   ` Raz Amir
2015-03-01 17:16     ` Neil Horman
2015-03-02  8:18       ` Raz Amir
2015-03-02 11:36         ` Neil Horman
2015-03-02 11:58           ` Raz Amir
2015-03-02 13:29             ` Thomas Monjalon
2015-03-03 11:30               ` Raz Amir
2015-03-03 11:45                 ` Bruce Richardson
2015-03-03 12:56                   ` Raz Amir
2015-03-03 13:32 ` Bruce Richardson
2015-03-04  9:07   ` Raz Amir
2015-03-04 10:13     ` Bruce Richardson
2015-03-04 10:28       ` Raz Amir
2015-03-04 11:15 ` [dpdk-dev] [PATCH v3] " Raz Amir
2015-03-09  8:07   ` Raz Amir
2015-03-09 10:27     ` Bruce Richardson
2015-03-10  8:15       ` Raz Amir
2015-03-04 11:47 ` [dpdk-dev] [PATCH v2] " Raz Amir
2015-03-05 14:59 ` [dpdk-dev] [PATCH v4] " Raz Amir
2015-03-05 16:24 ` Raz Amir
2015-03-11 10:26   ` Bruce Richardson
2015-03-12 12:24     ` Raz Amir
2015-03-16 16:29       ` Thomas Monjalon
2015-07-08 22:51         ` Thomas Monjalon

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